api.lib.php 298 KB

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  1. <?php
  2. /* For licensing terms, see /license.txt */
  3. use Brumann\Polyfill\Unserialize;
  4. use Chamilo\CoreBundle\Entity\SettingsCurrent;
  5. use Chamilo\CourseBundle\Component\CourseCopy\Course;
  6. use Chamilo\CourseBundle\Component\CourseCopy\Resources\Announcement;
  7. use Chamilo\CourseBundle\Component\CourseCopy\Resources\Attendance;
  8. use Chamilo\CourseBundle\Component\CourseCopy\Resources\CalendarEvent;
  9. use Chamilo\CourseBundle\Component\CourseCopy\Resources\CourseCopyLearnpath;
  10. use Chamilo\CourseBundle\Component\CourseCopy\Resources\CourseCopyTestCategory;
  11. use Chamilo\CourseBundle\Component\CourseCopy\Resources\CourseDescription;
  12. use Chamilo\CourseBundle\Component\CourseCopy\Resources\CourseSession;
  13. use Chamilo\CourseBundle\Component\CourseCopy\Resources\Document;
  14. use Chamilo\CourseBundle\Component\CourseCopy\Resources\Forum;
  15. use Chamilo\CourseBundle\Component\CourseCopy\Resources\ForumCategory;
  16. use Chamilo\CourseBundle\Component\CourseCopy\Resources\ForumPost;
  17. use Chamilo\CourseBundle\Component\CourseCopy\Resources\ForumTopic;
  18. use Chamilo\CourseBundle\Component\CourseCopy\Resources\Glossary;
  19. use Chamilo\CourseBundle\Component\CourseCopy\Resources\GradeBookBackup;
  20. use Chamilo\CourseBundle\Component\CourseCopy\Resources\Link;
  21. use Chamilo\CourseBundle\Component\CourseCopy\Resources\LinkCategory;
  22. use Chamilo\CourseBundle\Component\CourseCopy\Resources\Quiz;
  23. use Chamilo\CourseBundle\Component\CourseCopy\Resources\QuizQuestion;
  24. use Chamilo\CourseBundle\Component\CourseCopy\Resources\QuizQuestionOption;
  25. use Chamilo\CourseBundle\Component\CourseCopy\Resources\ScormDocument;
  26. use Chamilo\CourseBundle\Component\CourseCopy\Resources\Survey;
  27. use Chamilo\CourseBundle\Component\CourseCopy\Resources\SurveyInvitation;
  28. use Chamilo\CourseBundle\Component\CourseCopy\Resources\SurveyQuestion;
  29. use Chamilo\CourseBundle\Component\CourseCopy\Resources\Thematic;
  30. use Chamilo\CourseBundle\Component\CourseCopy\Resources\ToolIntro;
  31. use Chamilo\CourseBundle\Component\CourseCopy\Resources\Wiki;
  32. use Chamilo\CourseBundle\Component\CourseCopy\Resources\Work;
  33. use Chamilo\CourseBundle\Entity\CItemProperty;
  34. use Chamilo\UserBundle\Entity\User;
  35. use ChamiloSession as Session;
  36. use Fhaculty\Graph\Graph;
  37. use Fhaculty\Graph\Set\Edges;
  38. use Fhaculty\Graph\Set\Vertices;
  39. use Fhaculty\Graph\Set\VerticesMap;
  40. use Symfony\Component\Finder\Finder;
  41. /**
  42. * This is a code library for Chamilo.
  43. * It is included by default in every Chamilo file (through including the global.inc.php)
  44. * This library is in process of being transferred to src/Chamilo/CoreBundle/Component/Utils/ChamiloApi.
  45. * Whenever a function is transferred to the ChamiloApi class, the places where it is used should include
  46. * the "use Chamilo\CoreBundle\Component\Utils\ChamiloApi;" statement.
  47. *
  48. * @package chamilo.library
  49. */
  50. /**
  51. * Constants declaration.
  52. */
  53. // PHP version requirement.
  54. define('REQUIRED_PHP_VERSION', '5.5');
  55. define('REQUIRED_MIN_MEMORY_LIMIT', '128');
  56. define('REQUIRED_MIN_UPLOAD_MAX_FILESIZE', '10');
  57. define('REQUIRED_MIN_POST_MAX_SIZE', '10');
  58. // USER STATUS CONSTANTS
  59. /** global status of a user: student */
  60. define('STUDENT', 5);
  61. /** global status of a user: course manager */
  62. define('COURSEMANAGER', 1);
  63. /** global status of a user: session admin */
  64. define('SESSIONADMIN', 3);
  65. /** global status of a user: human ressource manager */
  66. define('DRH', 4);
  67. /** global status of a user: human ressource manager */
  68. define('ANONYMOUS', 6);
  69. /** global status of a user: low security, necessary for inserting data from
  70. * the teacher through HTMLPurifier */
  71. define('COURSEMANAGERLOWSECURITY', 10);
  72. // Soft user status
  73. define('PLATFORM_ADMIN', 11);
  74. define('SESSION_COURSE_COACH', 12);
  75. define('SESSION_GENERAL_COACH', 13);
  76. define('COURSE_STUDENT', 14); //student subscribed in a course
  77. define('SESSION_STUDENT', 15); //student subscribed in a session course
  78. define('COURSE_TUTOR', 16); // student is tutor of a course (NOT in session)
  79. define('STUDENT_BOSS', 17); // student is boss
  80. define('INVITEE', 20);
  81. define('HRM_REQUEST', 21); //HRM has request for vinculation with user
  82. // Table of status
  83. $_status_list[COURSEMANAGER] = 'teacher'; // 1
  84. $_status_list[SESSIONADMIN] = 'session_admin'; // 3
  85. $_status_list[DRH] = 'drh'; // 4
  86. $_status_list[STUDENT] = 'user'; // 5
  87. $_status_list[ANONYMOUS] = 'anonymous'; // 6
  88. $_status_list[INVITEE] = 'invited'; // 20
  89. // COURSE VISIBILITY CONSTANTS
  90. /** only visible for course admin */
  91. define('COURSE_VISIBILITY_CLOSED', 0);
  92. /** only visible for users registered in the course */
  93. define('COURSE_VISIBILITY_REGISTERED', 1);
  94. /** Open for all registered users on the platform */
  95. define('COURSE_VISIBILITY_OPEN_PLATFORM', 2);
  96. /** Open for the whole world */
  97. define('COURSE_VISIBILITY_OPEN_WORLD', 3);
  98. /** Invisible to all except admin */
  99. define('COURSE_VISIBILITY_HIDDEN', 4);
  100. define('COURSE_REQUEST_PENDING', 0);
  101. define('COURSE_REQUEST_ACCEPTED', 1);
  102. define('COURSE_REQUEST_REJECTED', 2);
  103. define('DELETE_ACTION_ENABLED', false);
  104. // EMAIL SENDING RECIPIENT CONSTANTS
  105. define('SEND_EMAIL_EVERYONE', 1);
  106. define('SEND_EMAIL_STUDENTS', 2);
  107. define('SEND_EMAIL_TEACHERS', 3);
  108. // SESSION VISIBILITY CONSTANTS
  109. define('SESSION_VISIBLE_READ_ONLY', 1);
  110. define('SESSION_VISIBLE', 2);
  111. define('SESSION_INVISIBLE', 3); // not available
  112. define('SESSION_AVAILABLE', 4);
  113. define('SESSION_LINK_TARGET', '_self');
  114. define('SUBSCRIBE_ALLOWED', 1);
  115. define('SUBSCRIBE_NOT_ALLOWED', 0);
  116. define('UNSUBSCRIBE_ALLOWED', 1);
  117. define('UNSUBSCRIBE_NOT_ALLOWED', 0);
  118. // SURVEY VISIBILITY CONSTANTS
  119. define('SURVEY_VISIBLE_TUTOR', 0);
  120. define('SURVEY_VISIBLE_TUTOR_STUDENT', 1);
  121. define('SURVEY_VISIBLE_PUBLIC', 2);
  122. // CONSTANTS defining all tools, using the english version
  123. /* When you add a new tool you must add it into function api_get_tools_lists() too */
  124. define('TOOL_DOCUMENT', 'document');
  125. define('TOOL_LP_FINAL_ITEM', 'final_item');
  126. define('TOOL_READOUT_TEXT', 'readout_text');
  127. define('TOOL_THUMBNAIL', 'thumbnail');
  128. define('TOOL_HOTPOTATOES', 'hotpotatoes');
  129. define('TOOL_CALENDAR_EVENT', 'calendar_event');
  130. define('TOOL_LINK', 'link');
  131. define('TOOL_LINK_CATEGORY', 'link_category');
  132. define('TOOL_COURSE_DESCRIPTION', 'course_description');
  133. define('TOOL_SEARCH', 'search');
  134. define('TOOL_LEARNPATH', 'learnpath');
  135. define('TOOL_LEARNPATH_CATEGORY', 'learnpath_category');
  136. define('TOOL_AGENDA', 'agenda');
  137. define('TOOL_ANNOUNCEMENT', 'announcement');
  138. define('TOOL_FORUM', 'forum');
  139. define('TOOL_FORUM_CATEGORY', 'forum_category');
  140. define('TOOL_FORUM_THREAD', 'forum_thread');
  141. define('TOOL_FORUM_POST', 'forum_post');
  142. define('TOOL_FORUM_ATTACH', 'forum_attachment');
  143. define('TOOL_FORUM_THREAD_QUALIFY', 'forum_thread_qualify');
  144. define('TOOL_THREAD', 'thread');
  145. define('TOOL_POST', 'post');
  146. define('TOOL_DROPBOX', 'dropbox');
  147. define('TOOL_QUIZ', 'quiz');
  148. define('TOOL_TEST_CATEGORY', 'test_category');
  149. define('TOOL_USER', 'user');
  150. define('TOOL_GROUP', 'group');
  151. define('TOOL_BLOGS', 'blog_management');
  152. define('TOOL_CHAT', 'chat');
  153. define('TOOL_STUDENTPUBLICATION', 'student_publication');
  154. define('TOOL_TRACKING', 'tracking');
  155. define('TOOL_HOMEPAGE_LINK', 'homepage_link');
  156. define('TOOL_COURSE_SETTING', 'course_setting');
  157. define('TOOL_BACKUP', 'backup');
  158. define('TOOL_COPY_COURSE_CONTENT', 'copy_course_content');
  159. define('TOOL_RECYCLE_COURSE', 'recycle_course');
  160. define('TOOL_COURSE_HOMEPAGE', 'course_homepage');
  161. define('TOOL_COURSE_RIGHTS_OVERVIEW', 'course_rights');
  162. define('TOOL_UPLOAD', 'file_upload');
  163. define('TOOL_COURSE_MAINTENANCE', 'course_maintenance');
  164. define('TOOL_SURVEY', 'survey');
  165. define('TOOL_WIKI', 'wiki');
  166. define('TOOL_GLOSSARY', 'glossary');
  167. define('TOOL_GRADEBOOK', 'gradebook');
  168. define('TOOL_NOTEBOOK', 'notebook');
  169. define('TOOL_ATTENDANCE', 'attendance');
  170. define('TOOL_COURSE_PROGRESS', 'course_progress');
  171. define('TOOL_PORTFOLIO', 'portfolio');
  172. // CONSTANTS defining Chamilo interface sections
  173. define('SECTION_CAMPUS', 'mycampus');
  174. define('SECTION_COURSES', 'mycourses');
  175. define('SECTION_CATALOG', 'catalog');
  176. define('SECTION_MYPROFILE', 'myprofile');
  177. define('SECTION_MYAGENDA', 'myagenda');
  178. define('SECTION_COURSE_ADMIN', 'course_admin');
  179. define('SECTION_PLATFORM_ADMIN', 'platform_admin');
  180. define('SECTION_MYGRADEBOOK', 'mygradebook');
  181. define('SECTION_TRACKING', 'session_my_space');
  182. define('SECTION_SOCIAL', 'social-network');
  183. define('SECTION_DASHBOARD', 'dashboard');
  184. define('SECTION_REPORTS', 'reports');
  185. define('SECTION_GLOBAL', 'global');
  186. define('SECTION_INCLUDE', 'include');
  187. // CONSTANT name for local authentication source
  188. define('PLATFORM_AUTH_SOURCE', 'platform');
  189. define('CAS_AUTH_SOURCE', 'cas');
  190. define('LDAP_AUTH_SOURCE', 'extldap');
  191. // CONSTANT defining the default HotPotatoes files directory
  192. define('DIR_HOTPOTATOES', '/HotPotatoes_files');
  193. // event logs types
  194. define('LOG_COURSE_DELETE', 'course_deleted');
  195. define('LOG_COURSE_CREATE', 'course_created');
  196. // @todo replace 'soc_gr' with social_group
  197. define('LOG_GROUP_PORTAL_CREATED', 'soc_gr_created');
  198. define('LOG_GROUP_PORTAL_UPDATED', 'soc_gr_updated');
  199. define('LOG_GROUP_PORTAL_DELETED', 'soc_gr_deleted');
  200. define('LOG_GROUP_PORTAL_USER_DELETE_ALL', 'soc_gr_delete_users');
  201. define('LOG_GROUP_PORTAL_ID', 'soc_gr_portal_id');
  202. define('LOG_GROUP_PORTAL_REL_USER_ARRAY', 'soc_gr_user_array');
  203. define('LOG_GROUP_PORTAL_USER_SUBSCRIBED', 'soc_gr_u_subs');
  204. define('LOG_GROUP_PORTAL_USER_UNSUBSCRIBED', 'soc_gr_u_unsubs');
  205. define('LOG_GROUP_PORTAL_USER_UPDATE_ROLE', 'soc_gr_update_role');
  206. define('LOG_USER_DELETE', 'user_deleted');
  207. define('LOG_USER_CREATE', 'user_created');
  208. define('LOG_USER_ENABLE', 'user_enable');
  209. define('LOG_USER_DISABLE', 'user_disable');
  210. define('LOG_USER_ANONYMIZE', 'user_anonymized');
  211. define('LOG_USER_FIELD_CREATE', 'user_field_created');
  212. define('LOG_USER_FIELD_DELETE', 'user_field_deleted');
  213. define('LOG_SESSION_CREATE', 'session_created');
  214. define('LOG_SESSION_DELETE', 'session_deleted');
  215. define('LOG_SESSION_ADD_USER_COURSE', 'session_add_user_course');
  216. define('LOG_SESSION_DELETE_USER_COURSE', 'session_delete_user_course');
  217. define('LOG_SESSION_ADD_USER', 'session_add_user');
  218. define('LOG_SESSION_DELETE_USER', 'session_delete_user');
  219. define('LOG_SESSION_ADD_COURSE', 'session_add_course');
  220. define('LOG_SESSION_DELETE_COURSE', 'session_delete_course');
  221. define('LOG_SESSION_CATEGORY_CREATE', 'session_cat_created'); //changed in 1.9.8
  222. define('LOG_SESSION_CATEGORY_DELETE', 'session_cat_deleted'); //changed in 1.9.8
  223. define('LOG_CONFIGURATION_SETTINGS_CHANGE', 'settings_changed');
  224. define('LOG_PLATFORM_LANGUAGE_CHANGE', 'platform_lng_changed'); //changed in 1.9.8
  225. define('LOG_SUBSCRIBE_USER_TO_COURSE', 'user_subscribed');
  226. define('LOG_UNSUBSCRIBE_USER_FROM_COURSE', 'user_unsubscribed');
  227. define('LOG_ATTEMPTED_FORCED_LOGIN', 'attempted_forced_login');
  228. define('LOG_HOMEPAGE_CHANGED', 'homepage_changed');
  229. define('LOG_PROMOTION_CREATE', 'promotion_created');
  230. define('LOG_PROMOTION_DELETE', 'promotion_deleted');
  231. define('LOG_CAREER_CREATE', 'career_created');
  232. define('LOG_CAREER_DELETE', 'career_deleted');
  233. define('LOG_USER_PERSONAL_DOC_DELETED', 'user_doc_deleted');
  234. define('LOG_WIKI_ACCESS', 'wiki_page_view');
  235. // All results from an exercise
  236. define('LOG_EXERCISE_RESULT_DELETE', 'exe_result_deleted');
  237. // Logs only the one attempt
  238. define('LOG_EXERCISE_ATTEMPT_DELETE', 'exe_attempt_deleted');
  239. define('LOG_LP_ATTEMPT_DELETE', 'lp_attempt_deleted');
  240. define('LOG_QUESTION_RESULT_DELETE', 'qst_attempt_deleted');
  241. define('LOG_MY_FOLDER_CREATE', 'my_folder_created');
  242. define('LOG_MY_FOLDER_CHANGE', 'my_folder_changed');
  243. define('LOG_MY_FOLDER_DELETE', 'my_folder_deleted');
  244. define('LOG_MY_FOLDER_COPY', 'my_folder_copied');
  245. define('LOG_MY_FOLDER_CUT', 'my_folder_cut');
  246. define('LOG_MY_FOLDER_PASTE', 'my_folder_pasted');
  247. define('LOG_MY_FOLDER_UPLOAD', 'my_folder_uploaded');
  248. // Event logs data types (max 20 chars)
  249. define('LOG_COURSE_CODE', 'course_code');
  250. define('LOG_COURSE_ID', 'course_id');
  251. define('LOG_USER_ID', 'user_id');
  252. define('LOG_USER_OBJECT', 'user_object');
  253. define('LOG_USER_FIELD_VARIABLE', 'user_field_variable');
  254. define('LOG_SESSION_ID', 'session_id');
  255. define('LOG_QUESTION_ID', 'question_id');
  256. define('LOG_SESSION_CATEGORY_ID', 'session_category_id');
  257. define('LOG_CONFIGURATION_SETTINGS_CATEGORY', 'settings_category');
  258. define('LOG_CONFIGURATION_SETTINGS_VARIABLE', 'settings_variable');
  259. define('LOG_PLATFORM_LANGUAGE', 'default_platform_language');
  260. define('LOG_CAREER_ID', 'career_id');
  261. define('LOG_PROMOTION_ID', 'promotion_id');
  262. define('LOG_GRADEBOOK_LOCKED', 'gradebook_locked');
  263. define('LOG_GRADEBOOK_UNLOCKED', 'gradebook_unlocked');
  264. define('LOG_GRADEBOOK_ID', 'gradebook_id');
  265. define('LOG_WIKI_PAGE_ID', 'wiki_page_id');
  266. define('LOG_EXERCISE_ID', 'exercise_id');
  267. define('LOG_EXERCISE_AND_USER_ID', 'exercise_and_user_id');
  268. define('LOG_LP_ID', 'lp_id');
  269. define('LOG_EXERCISE_ATTEMPT_QUESTION_ID', 'exercise_a_q_id');
  270. define('LOG_EXERCISE_ATTEMPT', 'exe_id');
  271. define('LOG_WORK_DIR_DELETE', 'work_dir_delete');
  272. define('LOG_WORK_FILE_DELETE', 'work_file_delete');
  273. define('LOG_WORK_DATA', 'work_data_array');
  274. define('LOG_MY_FOLDER_PATH', 'path');
  275. define('LOG_MY_FOLDER_NEW_PATH', 'new_path');
  276. define('LOG_TERM_CONDITION_ACCEPTED', 'term_condition_accepted');
  277. define('LOG_USER_CONFIRMED_EMAIL', 'user_confirmed_email');
  278. define('LOG_USER_REMOVED_LEGAL_ACCEPT', 'user_removed_legal_accept');
  279. define('LOG_USER_DELETE_ACCOUNT_REQUEST', 'user_delete_account_request');
  280. define('LOG_QUESTION_CREATED', 'question_created');
  281. define('LOG_QUESTION_UPDATED', 'question_updated');
  282. define('USERNAME_PURIFIER', '/[^0-9A-Za-z_\.]/');
  283. //used when login_is_email setting is true
  284. define('USERNAME_PURIFIER_MAIL', '/[^0-9A-Za-z_\.@]/');
  285. define('USERNAME_PURIFIER_SHALLOW', '/\s/');
  286. // This constant is a result of Windows OS detection, it has a boolean value:
  287. // true whether the server runs on Windows OS, false otherwise.
  288. define('IS_WINDOWS_OS', api_is_windows_os());
  289. // Checks for installed optional php-extensions.
  290. // intl extension (from PECL), it is installed by default as of PHP 5.3.0.
  291. define('INTL_INSTALLED', function_exists('intl_get_error_code'));
  292. // iconv extension, for PHP5 on Windows it is installed by default.
  293. define('ICONV_INSTALLED', function_exists('iconv'));
  294. define('MBSTRING_INSTALLED', function_exists('mb_strlen')); // mbstring extension.
  295. // Patterns for processing paths. Examples.
  296. define('REPEATED_SLASHES_PURIFIER', '/\/{2,}/'); // $path = preg_replace(REPEATED_SLASHES_PURIFIER, '/', $path);
  297. define('VALID_WEB_PATH', '/https?:\/\/[^\/]*(\/.*)?/i'); // $is_valid_path = preg_match(VALID_WEB_PATH, $path);
  298. // $new_path = preg_replace(VALID_WEB_SERVER_BASE, $new_base, $path);
  299. define('VALID_WEB_SERVER_BASE', '/https?:\/\/[^\/]*/i');
  300. // Constants for api_get_path() and api_get_path_type(), etc. - registered path types.
  301. // basic (leaf elements)
  302. define('REL_CODE_PATH', 'REL_CODE_PATH');
  303. define('REL_COURSE_PATH', 'REL_COURSE_PATH');
  304. define('REL_HOME_PATH', 'REL_HOME_PATH');
  305. // Constants for api_get_path() and api_get_path_type(), etc. - registered path types.
  306. define('WEB_PATH', 'WEB_PATH');
  307. define('WEB_APP_PATH', 'WEB_APP_PATH');
  308. define('SYS_PATH', 'SYS_PATH');
  309. define('SYS_APP_PATH', 'SYS_APP_PATH');
  310. define('SYS_UPLOAD_PATH', 'SYS_UPLOAD_PATH');
  311. define('WEB_UPLOAD_PATH', 'WEB_UPLOAD_PATH');
  312. define('REL_PATH', 'REL_PATH');
  313. define('WEB_COURSE_PATH', 'WEB_COURSE_PATH');
  314. define('SYS_COURSE_PATH', 'SYS_COURSE_PATH');
  315. define('WEB_CODE_PATH', 'WEB_CODE_PATH');
  316. define('SYS_CODE_PATH', 'SYS_CODE_PATH');
  317. define('SYS_LANG_PATH', 'SYS_LANG_PATH');
  318. define('WEB_IMG_PATH', 'WEB_IMG_PATH');
  319. define('WEB_CSS_PATH', 'WEB_CSS_PATH');
  320. define('WEB_PUBLIC_PATH', 'WEB_PUBLIC_PATH');
  321. define('SYS_CSS_PATH', 'SYS_CSS_PATH');
  322. define('SYS_PLUGIN_PATH', 'SYS_PLUGIN_PATH');
  323. define('WEB_PLUGIN_PATH', 'WEB_PLUGIN_PATH');
  324. define('WEB_PLUGIN_ASSET_PATH', 'WEB_PLUGIN_ASSET_PATH');
  325. define('SYS_ARCHIVE_PATH', 'SYS_ARCHIVE_PATH');
  326. define('WEB_ARCHIVE_PATH', 'WEB_ARCHIVE_PATH');
  327. define('SYS_INC_PATH', 'SYS_INC_PATH');
  328. define('LIBRARY_PATH', 'LIBRARY_PATH');
  329. define('CONFIGURATION_PATH', 'CONFIGURATION_PATH');
  330. define('WEB_LIBRARY_PATH', 'WEB_LIBRARY_PATH');
  331. define('WEB_LIBRARY_JS_PATH', 'WEB_LIBRARY_JS_PATH');
  332. define('WEB_AJAX_PATH', 'WEB_AJAX_PATH');
  333. define('SYS_TEST_PATH', 'SYS_TEST_PATH');
  334. define('WEB_TEMPLATE_PATH', 'WEB_TEMPLATE_PATH');
  335. define('SYS_TEMPLATE_PATH', 'SYS_TEMPLATE_PATH');
  336. define('SYS_PUBLIC_PATH', 'SYS_PUBLIC_PATH');
  337. define('SYS_HOME_PATH', 'SYS_HOME_PATH');
  338. define('WEB_HOME_PATH', 'WEB_HOME_PATH');
  339. define('WEB_FONTS_PATH', 'WEB_FONTS_PATH');
  340. define('SYS_FONTS_PATH', 'SYS_FONTS_PATH');
  341. define('SYS_DEFAULT_COURSE_DOCUMENT_PATH', 'SYS_DEFAULT_COURSE_DOCUMENT_PATH');
  342. define('REL_DEFAULT_COURSE_DOCUMENT_PATH', 'REL_DEFAULT_COURSE_DOCUMENT_PATH');
  343. define('WEB_DEFAULT_COURSE_DOCUMENT_PATH', 'WEB_DEFAULT_COURSE_DOCUMENT_PATH');
  344. // Relations type with Course manager
  345. define('COURSE_RELATION_TYPE_COURSE_MANAGER', 1);
  346. define('SESSION_RELATION_TYPE_COURSE_MANAGER', 1);
  347. // Relations type with Human resources manager
  348. define('COURSE_RELATION_TYPE_RRHH', 1);
  349. define('SESSION_RELATION_TYPE_RRHH', 1);
  350. //User image sizes
  351. define('USER_IMAGE_SIZE_ORIGINAL', 1);
  352. define('USER_IMAGE_SIZE_BIG', 2);
  353. define('USER_IMAGE_SIZE_MEDIUM', 3);
  354. define('USER_IMAGE_SIZE_SMALL', 4);
  355. // Relation type between users
  356. define('USER_UNKNOWN', 0);
  357. define('USER_RELATION_TYPE_UNKNOWN', 1);
  358. define('USER_RELATION_TYPE_PARENT', 2); // should be deprecated is useless
  359. define('USER_RELATION_TYPE_FRIEND', 3);
  360. define('USER_RELATION_TYPE_GOODFRIEND', 4); // should be deprecated is useless
  361. define('USER_RELATION_TYPE_ENEMY', 5); // should be deprecated is useless
  362. define('USER_RELATION_TYPE_DELETED', 6);
  363. define('USER_RELATION_TYPE_RRHH', 7);
  364. define('USER_RELATION_TYPE_BOSS', 8);
  365. define('USER_RELATION_TYPE_HRM_REQUEST', 9);
  366. // Gradebook link constants
  367. // Please do not change existing values, they are used in the database !
  368. define('GRADEBOOK_ITEM_LIMIT', 1000);
  369. define('LINK_EXERCISE', 1);
  370. define('LINK_DROPBOX', 2);
  371. define('LINK_STUDENTPUBLICATION', 3);
  372. define('LINK_LEARNPATH', 4);
  373. define('LINK_FORUM_THREAD', 5);
  374. //define('LINK_WORK',6);
  375. define('LINK_ATTENDANCE', 7);
  376. define('LINK_SURVEY', 8);
  377. define('LINK_HOTPOTATOES', 9);
  378. // Score display types constants
  379. define('SCORE_DIV', 1); // X / Y
  380. define('SCORE_PERCENT', 2); // XX %
  381. define('SCORE_DIV_PERCENT', 3); // X / Y (XX %)
  382. define('SCORE_AVERAGE', 4); // XX %
  383. define('SCORE_DECIMAL', 5); // 0.50 (X/Y)
  384. define('SCORE_BAR', 6); // Uses the Display::bar_progress function
  385. define('SCORE_SIMPLE', 7); // X
  386. define('SCORE_IGNORE_SPLIT', 8); // ??
  387. define('SCORE_DIV_PERCENT_WITH_CUSTOM', 9); // X / Y (XX %) - Good!
  388. define('SCORE_CUSTOM', 10); // Good!
  389. define('SCORE_DIV_SIMPLE_WITH_CUSTOM', 11); // X - Good!
  390. define('SCORE_DIV_SIMPLE_WITH_CUSTOM_LETTERS', 12); // X - Good!
  391. define('SCORE_ONLY_SCORE', 13); // X - Good!
  392. define('SCORE_BOTH', 1);
  393. define('SCORE_ONLY_DEFAULT', 2);
  394. define('SCORE_ONLY_CUSTOM', 3);
  395. // From display.lib.php
  396. define('MAX_LENGTH_BREADCRUMB', 100);
  397. define('ICON_SIZE_ATOM', 8);
  398. define('ICON_SIZE_TINY', 16);
  399. define('ICON_SIZE_SMALL', 22);
  400. define('ICON_SIZE_MEDIUM', 32);
  401. define('ICON_SIZE_LARGE', 48);
  402. define('ICON_SIZE_BIG', 64);
  403. define('ICON_SIZE_HUGE', 128);
  404. define('SHOW_TEXT_NEAR_ICONS', false);
  405. // Session catalog
  406. define('CATALOG_COURSES', 0);
  407. define('CATALOG_SESSIONS', 1);
  408. define('CATALOG_COURSES_SESSIONS', 2);
  409. // Hook type events, pre-process and post-process.
  410. // All means to be executed for both hook event types
  411. define('HOOK_EVENT_TYPE_PRE', 0);
  412. define('HOOK_EVENT_TYPE_POST', 1);
  413. define('HOOK_EVENT_TYPE_ALL', 10);
  414. define('CAREER_STATUS_ACTIVE', 1);
  415. define('CAREER_STATUS_INACTIVE', 0);
  416. define('PROMOTION_STATUS_ACTIVE', 1);
  417. define('PROMOTION_STATUS_INACTIVE', 0);
  418. // Group permissions
  419. define('GROUP_PERMISSION_OPEN', '1');
  420. define('GROUP_PERMISSION_CLOSED', '2');
  421. // Group user permissions
  422. define('GROUP_USER_PERMISSION_ADMIN', '1'); // the admin of a group
  423. define('GROUP_USER_PERMISSION_READER', '2'); // a normal user
  424. define('GROUP_USER_PERMISSION_PENDING_INVITATION', '3'); // When an admin/moderator invites a user
  425. define('GROUP_USER_PERMISSION_PENDING_INVITATION_SENT_BY_USER', '4'); // an user joins a group
  426. define('GROUP_USER_PERMISSION_MODERATOR', '5'); // a moderator
  427. define('GROUP_USER_PERMISSION_ANONYMOUS', '6'); // an anonymous user
  428. define('GROUP_USER_PERMISSION_HRM', '7'); // a human resources manager
  429. define('GROUP_IMAGE_SIZE_ORIGINAL', 1);
  430. define('GROUP_IMAGE_SIZE_BIG', 2);
  431. define('GROUP_IMAGE_SIZE_MEDIUM', 3);
  432. define('GROUP_IMAGE_SIZE_SMALL', 4);
  433. define('GROUP_TITLE_LENGTH', 50);
  434. // Exercise
  435. // @todo move into a class
  436. define('ALL_ON_ONE_PAGE', 1);
  437. define('ONE_PER_PAGE', 2);
  438. define('EXERCISE_FEEDBACK_TYPE_END', 0); //Feedback - show score and expected answers
  439. define('EXERCISE_FEEDBACK_TYPE_DIRECT', 1); //DirectFeedback - Do not show score nor answers
  440. define('EXERCISE_FEEDBACK_TYPE_EXAM', 2); //NoFeedback - Show score only
  441. define('RESULT_DISABLE_SHOW_SCORE_AND_EXPECTED_ANSWERS', 0); //show score and expected answers
  442. define('RESULT_DISABLE_NO_SCORE_AND_EXPECTED_ANSWERS', 1); //Do not show score nor answers
  443. define('RESULT_DISABLE_SHOW_SCORE_ONLY', 2); //Show score only
  444. define('RESULT_DISABLE_SHOW_FINAL_SCORE_ONLY_WITH_CATEGORIES', 3); //Show final score only with categories
  445. define('RESULT_DISABLE_SHOW_SCORE_ATTEMPT_SHOW_ANSWERS_LAST_ATTEMPT', 4);
  446. define('RESULT_DISABLE_DONT_SHOW_SCORE_ONLY_IF_USER_FINISHES_ATTEMPTS_SHOW_ALWAYS_FEEDBACK', 5);
  447. define('RESULT_DISABLE_RANKING', 6);
  448. // 4: Show final score only with categories and show expected answers only on the last attempt
  449. define('EXERCISE_MAX_NAME_SIZE', 80);
  450. // Question types (edit next array as well when adding values)
  451. // @todo move into a class
  452. define('UNIQUE_ANSWER', 1);
  453. define('MULTIPLE_ANSWER', 2);
  454. define('FILL_IN_BLANKS', 3);
  455. define('MATCHING', 4);
  456. define('FREE_ANSWER', 5);
  457. define('HOT_SPOT', 6);
  458. define('HOT_SPOT_ORDER', 7);
  459. define('HOT_SPOT_DELINEATION', 8);
  460. define('MULTIPLE_ANSWER_COMBINATION', 9);
  461. define('UNIQUE_ANSWER_NO_OPTION', 10);
  462. define('MULTIPLE_ANSWER_TRUE_FALSE', 11);
  463. define('MULTIPLE_ANSWER_COMBINATION_TRUE_FALSE', 12);
  464. define('ORAL_EXPRESSION', 13);
  465. define('GLOBAL_MULTIPLE_ANSWER', 14);
  466. define('MEDIA_QUESTION', 15);
  467. define('CALCULATED_ANSWER', 16);
  468. define('UNIQUE_ANSWER_IMAGE', 17);
  469. define('DRAGGABLE', 18);
  470. define('MATCHING_DRAGGABLE', 19);
  471. define('ANNOTATION', 20);
  472. define('READING_COMPREHENSION', 21);
  473. define('MULTIPLE_ANSWER_TRUE_FALSE_DEGREE_CERTAINTY', 22);
  474. define('EXERCISE_CATEGORY_RANDOM_SHUFFLED', 1);
  475. define('EXERCISE_CATEGORY_RANDOM_ORDERED', 2);
  476. define('EXERCISE_CATEGORY_RANDOM_DISABLED', 0);
  477. // Question selection type
  478. define('EX_Q_SELECTION_ORDERED', 1);
  479. define('EX_Q_SELECTION_RANDOM', 2);
  480. define('EX_Q_SELECTION_CATEGORIES_ORDERED_QUESTIONS_ORDERED', 3);
  481. define('EX_Q_SELECTION_CATEGORIES_RANDOM_QUESTIONS_ORDERED', 4);
  482. define('EX_Q_SELECTION_CATEGORIES_ORDERED_QUESTIONS_RANDOM', 5);
  483. define('EX_Q_SELECTION_CATEGORIES_RANDOM_QUESTIONS_RANDOM', 6);
  484. define('EX_Q_SELECTION_CATEGORIES_RANDOM_QUESTIONS_ORDERED_NO_GROUPED', 7);
  485. define('EX_Q_SELECTION_CATEGORIES_RANDOM_QUESTIONS_RANDOM_NO_GROUPED', 8);
  486. define('EX_Q_SELECTION_CATEGORIES_ORDERED_BY_PARENT_QUESTIONS_ORDERED', 9);
  487. define('EX_Q_SELECTION_CATEGORIES_ORDERED_BY_PARENT_QUESTIONS_RANDOM', 10);
  488. // Used to save the skill_rel_item table
  489. define('ITEM_TYPE_EXERCISE', 1);
  490. define('ITEM_TYPE_HOTPOTATOES', 2);
  491. define('ITEM_TYPE_LINK', 3);
  492. define('ITEM_TYPE_LEARNPATH', 4);
  493. define('ITEM_TYPE_GRADEBOOK', 5);
  494. define('ITEM_TYPE_STUDENT_PUBLICATION', 6);
  495. //define('ITEM_TYPE_FORUM', 7);
  496. define('ITEM_TYPE_ATTENDANCE', 8);
  497. define('ITEM_TYPE_SURVEY', 9);
  498. define('ITEM_TYPE_FORUM_THREAD', 10);
  499. // one big string with all question types, for the validator in pear/HTML/QuickForm/Rule/QuestionType
  500. define(
  501. 'QUESTION_TYPES',
  502. UNIQUE_ANSWER.':'.
  503. MULTIPLE_ANSWER.':'.
  504. FILL_IN_BLANKS.':'.
  505. MATCHING.':'.
  506. FREE_ANSWER.':'.
  507. HOT_SPOT.':'.
  508. HOT_SPOT_ORDER.':'.
  509. HOT_SPOT_DELINEATION.':'.
  510. MULTIPLE_ANSWER_COMBINATION.':'.
  511. UNIQUE_ANSWER_NO_OPTION.':'.
  512. MULTIPLE_ANSWER_TRUE_FALSE.':'.
  513. MULTIPLE_ANSWER_COMBINATION_TRUE_FALSE.':'.
  514. ORAL_EXPRESSION.':'.
  515. GLOBAL_MULTIPLE_ANSWER.':'.
  516. MEDIA_QUESTION.':'.
  517. CALCULATED_ANSWER.':'.
  518. UNIQUE_ANSWER_IMAGE.':'.
  519. DRAGGABLE.':'.
  520. MATCHING_DRAGGABLE.':'.
  521. MULTIPLE_ANSWER_TRUE_FALSE_DEGREE_CERTAINTY.':'.
  522. ANNOTATION
  523. );
  524. //Some alias used in the QTI exports
  525. define('MCUA', 1);
  526. define('TF', 1);
  527. define('MCMA', 2);
  528. define('FIB', 3);
  529. // Skills
  530. define('SKILL_TYPE_REQUIREMENT', 'required');
  531. define('SKILL_TYPE_ACQUIRED', 'acquired');
  532. define('SKILL_TYPE_BOTH', 'both');
  533. // Message
  534. define('MESSAGE_STATUS_NEW', '0');
  535. define('MESSAGE_STATUS_UNREAD', '1');
  536. //2 ??
  537. define('MESSAGE_STATUS_DELETED', '3');
  538. define('MESSAGE_STATUS_OUTBOX', '4');
  539. define('MESSAGE_STATUS_INVITATION_PENDING', '5');
  540. define('MESSAGE_STATUS_INVITATION_ACCEPTED', '6');
  541. define('MESSAGE_STATUS_INVITATION_DENIED', '7');
  542. define('MESSAGE_STATUS_WALL', '8');
  543. define('MESSAGE_STATUS_WALL_DELETE', '9');
  544. define('MESSAGE_STATUS_WALL_POST', '10');
  545. define('MESSAGE_STATUS_CONVERSATION', '11');
  546. // Images
  547. define('IMAGE_WALL_SMALL_SIZE', 200);
  548. define('IMAGE_WALL_MEDIUM_SIZE', 500);
  549. define('IMAGE_WALL_BIG_SIZE', 2000);
  550. define('IMAGE_WALL_SMALL', 'small');
  551. define('IMAGE_WALL_MEDIUM', 'medium');
  552. define('IMAGE_WALL_BIG', 'big');
  553. // Social PLUGIN PLACES
  554. define('SOCIAL_LEFT_PLUGIN', 1);
  555. define('SOCIAL_CENTER_PLUGIN', 2);
  556. define('SOCIAL_RIGHT_PLUGIN', 3);
  557. define('CUT_GROUP_NAME', 50);
  558. /**
  559. * FormValidator Filter.
  560. */
  561. define('NO_HTML', 1);
  562. define('STUDENT_HTML', 2);
  563. define('TEACHER_HTML', 3);
  564. define('STUDENT_HTML_FULLPAGE', 4);
  565. define('TEACHER_HTML_FULLPAGE', 5);
  566. // Timeline
  567. define('TIMELINE_STATUS_ACTIVE', '1');
  568. define('TIMELINE_STATUS_INACTIVE', '2');
  569. // Event email template class
  570. define('EVENT_EMAIL_TEMPLATE_ACTIVE', 1);
  571. define('EVENT_EMAIL_TEMPLATE_INACTIVE', 0);
  572. // Course home
  573. define('SHORTCUTS_HORIZONTAL', 0);
  574. define('SHORTCUTS_VERTICAL', 1);
  575. // Image class
  576. define('IMAGE_PROCESSOR', 'gd'); // 'imagick' or 'gd' strings
  577. // Course copy
  578. define('FILE_SKIP', 1);
  579. define('FILE_RENAME', 2);
  580. define('FILE_OVERWRITE', 3);
  581. define('UTF8_CONVERT', false); //false by default
  582. define('DOCUMENT', 'file');
  583. define('FOLDER', 'folder');
  584. define('RESOURCE_ASSET', 'asset');
  585. define('RESOURCE_DOCUMENT', 'document');
  586. define('RESOURCE_GLOSSARY', 'glossary');
  587. define('RESOURCE_EVENT', 'calendar_event');
  588. define('RESOURCE_LINK', 'link');
  589. define('RESOURCE_COURSEDESCRIPTION', 'course_description');
  590. define('RESOURCE_LEARNPATH', 'learnpath');
  591. define('RESOURCE_LEARNPATH_CATEGORY', 'learnpath_category');
  592. define('RESOURCE_ANNOUNCEMENT', 'announcement');
  593. define('RESOURCE_FORUM', 'forum');
  594. define('RESOURCE_FORUMTOPIC', 'thread');
  595. define('RESOURCE_FORUMPOST', 'post');
  596. define('RESOURCE_QUIZ', 'quiz');
  597. define('RESOURCE_TEST_CATEGORY', 'test_category');
  598. define('RESOURCE_QUIZQUESTION', 'Exercise_Question');
  599. define('RESOURCE_TOOL_INTRO', 'Tool introduction');
  600. define('RESOURCE_LINKCATEGORY', 'Link_Category');
  601. define('RESOURCE_FORUMCATEGORY', 'Forum_Category');
  602. define('RESOURCE_SCORM', 'Scorm');
  603. define('RESOURCE_SURVEY', 'survey');
  604. define('RESOURCE_SURVEYQUESTION', 'survey_question');
  605. define('RESOURCE_SURVEYINVITATION', 'survey_invitation');
  606. define('RESOURCE_WIKI', 'wiki');
  607. define('RESOURCE_THEMATIC', 'thematic');
  608. define('RESOURCE_ATTENDANCE', 'attendance');
  609. define('RESOURCE_WORK', 'work');
  610. define('RESOURCE_SESSION_COURSE', 'session_course');
  611. define('RESOURCE_GRADEBOOK', 'gradebook');
  612. define('ADD_THEMATIC_PLAN', 6);
  613. // Max online users to show per page (whoisonline)
  614. define('MAX_ONLINE_USERS', 12);
  615. // Number of characters maximum to show in preview of course blog posts
  616. define('BLOG_MAX_PREVIEW_CHARS', 800);
  617. // HTML string to replace with a 'Read more...' link
  618. define('BLOG_PAGE_BREAK', '<div style="page-break-after: always"><span style="display: none;">&nbsp;</span></div>');
  619. // Make sure the CHAMILO_LOAD_WYSIWYG constant is defined
  620. // To remove CKeditor libs from HTML, set this constant to true before loading
  621. if (!defined('CHAMILO_LOAD_WYSIWYG')) {
  622. define('CHAMILO_LOAD_WYSIWYG', true);
  623. }
  624. /* Constants for course home */
  625. define('TOOL_PUBLIC', 'Public');
  626. define('TOOL_PUBLIC_BUT_HIDDEN', 'PublicButHide');
  627. define('TOOL_COURSE_ADMIN', 'courseAdmin');
  628. define('TOOL_PLATFORM_ADMIN', 'platformAdmin');
  629. define('TOOL_AUTHORING', 'toolauthoring');
  630. define('TOOL_INTERACTION', 'toolinteraction');
  631. define('TOOL_COURSE_PLUGIN', 'toolcourseplugin'); //all plugins that can be enabled in courses
  632. define('TOOL_ADMIN', 'tooladmin');
  633. define('TOOL_ADMIN_PLATFORM', 'tooladminplatform');
  634. define('TOOL_DRH', 'tool_drh');
  635. define('TOOL_STUDENT_VIEW', 'toolstudentview');
  636. define('TOOL_ADMIN_VISIBLE', 'tooladminvisible');
  637. /**
  638. * Inclusion of internationalization libraries.
  639. */
  640. require_once __DIR__.'/internationalization.lib.php';
  641. /**
  642. * Returns a path to a certain resource within the Chamilo area, specifyed through a parameter.
  643. * Also, this function provides conversion between path types, in this case the input path points inside the Chamilo area too.
  644. *
  645. * See $_configuration['course_folder'] in the configuration.php to alter the WEB_COURSE_PATH and SYS_COURSE_PATH parameters.
  646. *
  647. * @param string $path (optional) A path which type is to be converted. Also, it may be a defined constant for a path.
  648. * This parameter has meaning when $type parameter has one of the following values: TO_WEB, TO_SYS, TO_REL. Otherwise it is ignored.
  649. *
  650. * @return string the requested path or the converted path
  651. *
  652. *
  653. * Notes about the current behaviour model:
  654. * 1. Windows back-slashes are converted to slashes in the result.
  655. * 2. A semi-absolute web-path is detected by its leading slash. On Linux systems, absolute system paths start with
  656. * a slash too, so an additional check about presence of leading system server base is implemented. For example, the function is
  657. * able to distinguish type difference between /var/www/chamilo/courses/ (SYS) and /chamilo/courses/ (REL).
  658. * 3. The function api_get_path() returns only these three types of paths, which in some sense are absolute. The function has
  659. * no a mechanism for processing relative web/system paths, such as: lesson01.html, ./lesson01.html, ../css/my_styles.css.
  660. * It has not been identified as needed yet.
  661. * 4. Also, resolving the meta-symbols "." and ".." within paths has not been implemented, it is to be identified as needed.
  662. *
  663. * For examples go to: *
  664. * See main/admin/system_status.php?section=paths
  665. *
  666. * Vchamilo changes : allow using an alternate configuration
  667. * to get vchamilo instance paths
  668. */
  669. function api_get_path($path = '', $configuration = [])
  670. {
  671. global $paths;
  672. // get proper configuration data if exists
  673. global $_configuration;
  674. $emptyConfigurationParam = false;
  675. if (empty($configuration)) {
  676. $configuration = (array) $_configuration;
  677. $emptyConfigurationParam = true;
  678. }
  679. $course_folder = 'courses/';
  680. static $root_web = '';
  681. $root_sys = $_configuration['root_sys'];
  682. // If no $root_web has been set so far *and* no custom config has been passed to the function
  683. // then re-use the previously-calculated (run-specific) $root_web and skip this complex calculation
  684. if (empty($root_web) || $emptyConfigurationParam === false || empty($configuration)) {
  685. // Resolve master hostname.
  686. if (!empty($configuration) && array_key_exists('root_web', $configuration)) {
  687. $root_web = $configuration['root_web'];
  688. } else {
  689. $root_web = '';
  690. // Try guess it from server.
  691. if (defined('SYSTEM_INSTALLATION') && SYSTEM_INSTALLATION) {
  692. if (($pos = strpos(($requested_page_rel = api_get_self()), 'main/install')) !== false) {
  693. $root_rel = substr($requested_page_rel, 0, $pos);
  694. // See http://www.mediawiki.org/wiki/Manual:$wgServer
  695. $server_protocol = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 'https' : 'http';
  696. $server_name =
  697. isset($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME']
  698. : (isset($_SERVER['HOSTNAME']) ? $_SERVER['HOSTNAME']
  699. : (isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST']
  700. : (isset($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR']
  701. : 'localhost')));
  702. if (isset($_SERVER['SERVER_PORT']) &&
  703. !strpos($server_name, ':') &&
  704. (($server_protocol == 'http' && $_SERVER['SERVER_PORT'] != 80) ||
  705. ($server_protocol == 'https' && $_SERVER['SERVER_PORT'] != 443))
  706. ) {
  707. $server_name .= ":".$_SERVER['SERVER_PORT'];
  708. }
  709. $root_web = $server_protocol.'://'.$server_name.$root_rel;
  710. $root_sys = str_replace('\\', '/', realpath(__DIR__.'/../../../')).'/';
  711. }
  712. // Here we give up, so we don't touch anything.
  713. }
  714. }
  715. }
  716. if (isset($configuration['multiple_access_urls']) &&
  717. $configuration['multiple_access_urls']
  718. ) {
  719. // To avoid that the api_get_access_url() function fails since global.inc.php also calls the api.lib.php.
  720. if (isset($configuration['access_url']) && !empty($configuration['access_url'])) {
  721. // We look into the DB the function api_get_access_url
  722. $urlInfo = api_get_access_url($configuration['access_url']);
  723. // Avoid default value
  724. $defaultValues = ['http://localhost/', 'https://localhost/'];
  725. if (!empty($urlInfo['url']) && !in_array($urlInfo['url'], $defaultValues)) {
  726. $root_web = $urlInfo['active'] == 1 ? $urlInfo['url'] : $configuration['root_web'];
  727. }
  728. }
  729. }
  730. $paths = [];
  731. // Initialise cache with default values.
  732. if (!array_key_exists($root_web, $paths)) {
  733. $paths[$root_web] = [
  734. WEB_PATH => '',
  735. SYS_PATH => '',
  736. REL_PATH => '',
  737. WEB_COURSE_PATH => '',
  738. SYS_COURSE_PATH => '',
  739. REL_COURSE_PATH => '',
  740. WEB_CODE_PATH => 'main/',
  741. SYS_CODE_PATH => 'main/',
  742. REL_CODE_PATH => '/main/',
  743. SYS_LANG_PATH => 'lang/',
  744. WEB_IMG_PATH => 'img/',
  745. WEB_CSS_PATH => 'web/css/',
  746. SYS_CSS_PATH => 'app/Resources/public/css/',
  747. SYS_PLUGIN_PATH => 'plugin/',
  748. WEB_PLUGIN_PATH => 'plugin/',
  749. WEB_PLUGIN_ASSET_PATH => 'public/plugins/',
  750. SYS_ARCHIVE_PATH => 'app/cache/',
  751. WEB_ARCHIVE_PATH => 'app/cache/',
  752. SYS_HOME_PATH => 'app/home/',
  753. WEB_HOME_PATH => 'app/home/',
  754. REL_HOME_PATH => 'app/home/',
  755. SYS_APP_PATH => 'app/',
  756. WEB_APP_PATH => 'app/',
  757. SYS_UPLOAD_PATH => 'app/upload/',
  758. SYS_INC_PATH => 'inc/',
  759. CONFIGURATION_PATH => 'app/config/',
  760. LIBRARY_PATH => 'inc/lib/',
  761. WEB_LIBRARY_PATH => 'inc/lib/',
  762. WEB_LIBRARY_JS_PATH => 'inc/lib/javascript/',
  763. WEB_AJAX_PATH => 'inc/ajax/',
  764. SYS_TEST_PATH => 'tests/',
  765. WEB_TEMPLATE_PATH => 'template/',
  766. SYS_TEMPLATE_PATH => 'template/',
  767. WEB_UPLOAD_PATH => 'app/upload/',
  768. WEB_PUBLIC_PATH => 'web/',
  769. SYS_PUBLIC_PATH => 'web/',
  770. WEB_FONTS_PATH => 'fonts/',
  771. SYS_FONTS_PATH => 'fonts/',
  772. ];
  773. }
  774. $isInitialized = [];
  775. $course_folder = isset($configuration['course_folder']) ? $configuration['course_folder'] : $course_folder;
  776. $root_rel = isset($configuration['url_append']) ? $configuration['url_append'] : '';
  777. if (!empty($root_rel)) {
  778. // Adds "/" to the root_rel
  779. $hasSlash = substr($configuration['url_append'], 0, 1);
  780. if ($hasSlash !== '/') {
  781. $root_rel = '/'.$root_rel;
  782. }
  783. }
  784. // Web server base and system server base.
  785. if (!array_key_exists($root_web, $isInitialized)) {
  786. // process absolute global roots
  787. if (!empty($configuration)) {
  788. $code_folder = 'main';
  789. } else {
  790. $code_folder = $paths[$root_web][REL_CODE_PATH];
  791. }
  792. // Support for the installation process.
  793. // Developers might use the function api_get_path() directly or indirectly (this is difficult to be traced), at the moment when
  794. // configuration has not been created yet. This is why this function should be upgraded to return correct results in this case.
  795. // Dealing with trailing slashes.
  796. $slashed_root_web = api_add_trailing_slash($root_web);
  797. $root_sys = api_add_trailing_slash($root_sys);
  798. $root_rel = api_add_trailing_slash($root_rel);
  799. $code_folder = api_add_trailing_slash($code_folder);
  800. $course_folder = api_add_trailing_slash($course_folder);
  801. // Initialization of a table that contains common-purpose paths.
  802. $paths[$root_web][REL_PATH] = $root_rel;
  803. $paths[$root_web][REL_COURSE_PATH] = $root_rel.$course_folder;
  804. $paths[$root_web][REL_CODE_PATH] = $root_rel.$code_folder;
  805. $paths[$root_web][REL_DEFAULT_COURSE_DOCUMENT_PATH] = $paths[$root_web][REL_PATH].'main/default_course_document/';
  806. $paths[$root_web][WEB_PATH] = $slashed_root_web;
  807. $paths[$root_web][WEB_CODE_PATH] = $paths[$root_web][WEB_PATH].$code_folder;
  808. $paths[$root_web][WEB_COURSE_PATH] = $paths[$root_web][WEB_PATH].$course_folder;
  809. $paths[$root_web][WEB_DEFAULT_COURSE_DOCUMENT_PATH] = $paths[$root_web][WEB_CODE_PATH].'default_course_document/';
  810. $paths[$root_web][WEB_APP_PATH] = $paths[$root_web][WEB_PATH].$paths[$root_web][WEB_APP_PATH];
  811. $paths[$root_web][WEB_PLUGIN_PATH] = $paths[$root_web][WEB_PATH].$paths[$root_web][WEB_PLUGIN_PATH];
  812. $paths[$root_web][WEB_PLUGIN_ASSET_PATH] = $paths[$root_web][WEB_PATH].$paths[$root_web][WEB_PLUGIN_ASSET_PATH];
  813. $paths[$root_web][WEB_ARCHIVE_PATH] = $paths[$root_web][WEB_PATH].$paths[$root_web][WEB_ARCHIVE_PATH];
  814. $paths[$root_web][WEB_CSS_PATH] = $paths[$root_web][WEB_PATH].$paths[$root_web][WEB_CSS_PATH];
  815. $paths[$root_web][WEB_IMG_PATH] = $paths[$root_web][WEB_CODE_PATH].$paths[$root_web][WEB_IMG_PATH];
  816. $paths[$root_web][WEB_LIBRARY_PATH] = $paths[$root_web][WEB_CODE_PATH].$paths[$root_web][WEB_LIBRARY_PATH];
  817. $paths[$root_web][WEB_LIBRARY_JS_PATH] = $paths[$root_web][WEB_CODE_PATH].$paths[$root_web][WEB_LIBRARY_JS_PATH];
  818. $paths[$root_web][WEB_AJAX_PATH] = $paths[$root_web][WEB_CODE_PATH].$paths[$root_web][WEB_AJAX_PATH];
  819. $paths[$root_web][WEB_FONTS_PATH] = $paths[$root_web][WEB_CODE_PATH].$paths[$root_web][WEB_FONTS_PATH];
  820. $paths[$root_web][WEB_TEMPLATE_PATH] = $paths[$root_web][WEB_CODE_PATH].$paths[$root_web][WEB_TEMPLATE_PATH];
  821. $paths[$root_web][WEB_UPLOAD_PATH] = $paths[$root_web][WEB_PATH].$paths[$root_web][WEB_UPLOAD_PATH];
  822. $paths[$root_web][WEB_PUBLIC_PATH] = $paths[$root_web][WEB_PATH].$paths[$root_web][WEB_PUBLIC_PATH];
  823. $paths[$root_web][WEB_HOME_PATH] = $paths[$root_web][WEB_PATH].$paths[$root_web][REL_HOME_PATH];
  824. $paths[$root_web][SYS_PATH] = $root_sys;
  825. $paths[$root_web][SYS_CODE_PATH] = $root_sys.$code_folder;
  826. $paths[$root_web][SYS_TEST_PATH] = $paths[$root_web][SYS_PATH].$paths[$root_web][SYS_TEST_PATH];
  827. $paths[$root_web][SYS_TEMPLATE_PATH] = $paths[$root_web][SYS_CODE_PATH].$paths[$root_web][SYS_TEMPLATE_PATH];
  828. $paths[$root_web][SYS_PUBLIC_PATH] = $paths[$root_web][SYS_PATH].$paths[$root_web][SYS_PUBLIC_PATH];
  829. $paths[$root_web][SYS_CSS_PATH] = $paths[$root_web][SYS_PATH].$paths[$root_web][SYS_CSS_PATH];
  830. $paths[$root_web][SYS_FONTS_PATH] = $paths[$root_web][SYS_CODE_PATH].$paths[$root_web][SYS_FONTS_PATH];
  831. $paths[$root_web][SYS_ARCHIVE_PATH] = $paths[$root_web][SYS_PATH].$paths[$root_web][SYS_ARCHIVE_PATH];
  832. $paths[$root_web][SYS_APP_PATH] = $paths[$root_web][SYS_PATH].$paths[$root_web][SYS_APP_PATH];
  833. $paths[$root_web][SYS_COURSE_PATH] = $paths[$root_web][SYS_APP_PATH].$course_folder;
  834. $paths[$root_web][SYS_UPLOAD_PATH] = $paths[$root_web][SYS_PATH].$paths[$root_web][SYS_UPLOAD_PATH];
  835. $paths[$root_web][SYS_LANG_PATH] = $paths[$root_web][SYS_CODE_PATH].$paths[$root_web][SYS_LANG_PATH];
  836. $paths[$root_web][SYS_HOME_PATH] = $paths[$root_web][SYS_PATH].$paths[$root_web][SYS_HOME_PATH];
  837. $paths[$root_web][SYS_PLUGIN_PATH] = $paths[$root_web][SYS_PATH].$paths[$root_web][SYS_PLUGIN_PATH];
  838. $paths[$root_web][SYS_INC_PATH] = $paths[$root_web][SYS_CODE_PATH].$paths[$root_web][SYS_INC_PATH];
  839. $paths[$root_web][LIBRARY_PATH] = $paths[$root_web][SYS_CODE_PATH].$paths[$root_web][LIBRARY_PATH];
  840. $paths[$root_web][CONFIGURATION_PATH] = $paths[$root_web][SYS_PATH].$paths[$root_web][CONFIGURATION_PATH];
  841. global $virtualChamilo;
  842. if (!empty($virtualChamilo)) {
  843. $paths[$root_web][SYS_ARCHIVE_PATH] = api_add_trailing_slash($virtualChamilo[SYS_ARCHIVE_PATH]);
  844. $paths[$root_web][SYS_HOME_PATH] = api_add_trailing_slash($virtualChamilo[SYS_HOME_PATH]);
  845. $paths[$root_web][SYS_COURSE_PATH] = api_add_trailing_slash($virtualChamilo[SYS_COURSE_PATH]);
  846. $paths[$root_web][SYS_UPLOAD_PATH] = api_add_trailing_slash($virtualChamilo[SYS_UPLOAD_PATH]);
  847. $paths[$root_web][WEB_HOME_PATH] = api_add_trailing_slash($virtualChamilo[WEB_HOME_PATH]);
  848. $paths[$root_web][WEB_UPLOAD_PATH] = api_add_trailing_slash($virtualChamilo[WEB_UPLOAD_PATH]);
  849. $paths[$root_web][WEB_ARCHIVE_PATH] = api_add_trailing_slash($virtualChamilo[WEB_ARCHIVE_PATH]);
  850. //$paths[$root_web][WEB_COURSE_PATH] = api_add_trailing_slash($virtualChamilo[WEB_COURSE_PATH]);
  851. // WEB_UPLOAD_PATH should be handle by apache htaccess in the vhost
  852. // RewriteEngine On
  853. // RewriteRule /app/upload/(.*)$ http://localhost/other/upload/my-chamilo111-net/$1 [QSA,L]
  854. //$paths[$root_web][WEB_UPLOAD_PATH] = api_add_trailing_slash($virtualChamilo[WEB_UPLOAD_PATH]);
  855. //$paths[$root_web][REL_PATH] = $virtualChamilo[REL_PATH];
  856. //$paths[$root_web][REL_COURSE_PATH] = $virtualChamilo[REL_COURSE_PATH];
  857. }
  858. $isInitialized[$root_web] = true;
  859. }
  860. $path = trim($path);
  861. // Retrieving a common-purpose path.
  862. if (isset($paths[$root_web][$path])) {
  863. return $paths[$root_web][$path];
  864. }
  865. // Second purification.
  866. // Replacing Windows back slashes.
  867. $path = str_replace('\\', '/', $path);
  868. // Query strings sometimes mighth wrongly appear in non-URLs.
  869. // Let us check remove them from all types of paths.
  870. if (($pos = strpos($path, '?')) !== false) {
  871. $path = substr($path, 0, $pos);
  872. }
  873. // Detection of the input path type. Conversion to semi-absolute type ( /chamilo/main/inc/.... ).
  874. if (preg_match(VALID_WEB_PATH, $path)) {
  875. // A special case: When a URL points to the document download script directly, without
  876. // mod-rewrite translation, we have to translate it into an "ordinary" web path.
  877. // For example:
  878. // http://localhost/chamilo/main/document/download.php?doc_url=/image.png&cDir=/
  879. // becomes
  880. // http://localhost/chamilo/courses/TEST/document/image.png
  881. // TEST is a course directory name, so called "system course code".
  882. if (strpos($path, 'download.php') !== false) { // Fast detection first.
  883. $path = urldecode($path);
  884. if (preg_match('/(.*)main\/document\/download.php\?doc_url=\/(.*)&cDir=\/(.*)?/', $path, $matches)) {
  885. $sys_course_code =
  886. isset($_SESSION['_course']['sysCode']) // User is inside a course?
  887. ? $_SESSION['_course']['sysCode'] // Yes, then use course's directory name.
  888. : '{SYS_COURSE_CODE}'; // No, then use a fake code, it may be processed later.
  889. $path = $matches[1].'courses/'.$sys_course_code.'/document/'.str_replace('//', '/', $matches[3].'/'.$matches[2]);
  890. }
  891. }
  892. // Replacement of the present web server base with a slash '/'.
  893. $path = preg_replace(VALID_WEB_SERVER_BASE, '/', $path);
  894. }
  895. // Path now is semi-absolute. It is convenient at this moment repeated slashes to be removed.
  896. $path = preg_replace(REPEATED_SLASHES_PURIFIER, '/', $path);
  897. return $path;
  898. }
  899. /**
  900. * Gets a modified version of the path for the CDN, if defined in
  901. * configuration.php.
  902. *
  903. * @param string $web_path The path of the resource without CDN
  904. *
  905. * @return string The path of the resource converted to CDN
  906. *
  907. * @author Yannick Warnier <ywarnier@beeznst.org>
  908. */
  909. function api_get_cdn_path($web_path)
  910. {
  911. global $_configuration;
  912. if (!empty($_configuration['cdn_enable'])) {
  913. $web_root = api_get_path(WEB_PATH);
  914. $ext = substr($web_path, strrpos($web_path, '.'));
  915. if (isset($ext[2])) { // faster version of strlen to check if len>2
  916. // Check for CDN definitions
  917. if (!empty($ext)) {
  918. foreach ($_configuration['cdn'] as $host => $exts) {
  919. if (in_array($ext, $exts)) {
  920. //Use host as defined in $_configuration['cdn'], without
  921. // trailing slash
  922. return str_replace($web_root, $host.'/', $web_path);
  923. }
  924. }
  925. }
  926. }
  927. }
  928. return $web_path;
  929. }
  930. /**
  931. * @return bool Return true if CAS authentification is activated
  932. */
  933. function api_is_cas_activated()
  934. {
  935. return api_get_setting('cas_activate') == "true";
  936. }
  937. /**
  938. * @return bool Return true if LDAP authentification is activated
  939. */
  940. function api_is_ldap_activated()
  941. {
  942. global $extAuthSource;
  943. return is_array($extAuthSource[LDAP_AUTH_SOURCE]);
  944. }
  945. /**
  946. * @return bool Return true if Facebook authentification is activated
  947. */
  948. function api_is_facebook_auth_activated()
  949. {
  950. global $_configuration;
  951. return isset($_configuration['facebook_auth']) && $_configuration['facebook_auth'] == 1;
  952. }
  953. /**
  954. * Adds to a given path a trailing slash if it is necessary (adds "/" character at the end of the string).
  955. *
  956. * @param string $path the input path
  957. *
  958. * @return string returns the modified path
  959. */
  960. function api_add_trailing_slash($path)
  961. {
  962. return substr($path, -1) == '/' ? $path : $path.'/';
  963. // This code is about 20% faster than the preg_replace equivalent
  964. //return preg_replace('/([^\/])$/', '$1/', $path);
  965. }
  966. /**
  967. * Removes from a given path the trailing slash if it is necessary (removes "/" character from the end of the string).
  968. *
  969. * @param string $path the input path
  970. *
  971. * @return string returns the modified path
  972. */
  973. function api_remove_trailing_slash($path)
  974. {
  975. return substr($path, -1) == '/' ? substr($path, 0, -1) : $path;
  976. }
  977. /**
  978. * Checks the RFC 3986 syntax of a given URL.
  979. *
  980. * @param string $url the URL to be checked
  981. * @param bool $absolute whether the URL is absolute (beginning with a scheme such as "http:")
  982. *
  983. * @return string|false Returns the URL if it is valid, FALSE otherwise.
  984. * This function is an adaptation from the function valid_url(), Drupal CMS.
  985. *
  986. * @see http://drupal.org
  987. * Note: The built-in function filter_var($urs, FILTER_VALIDATE_URL) has a bug for some versions of PHP.
  988. * @see http://bugs.php.net/51192
  989. */
  990. function api_valid_url($url, $absolute = false)
  991. {
  992. if ($absolute) {
  993. if (preg_match("
  994. /^ # Start at the beginning of the text
  995. (?:ftp|https?|feed):\/\/ # Look for ftp, http, https or feed schemes
  996. (?: # Userinfo (optional) which is typically
  997. (?:(?:[\w\.\-\+!$&'\(\)*\+,;=]|%[0-9a-f]{2})+:)* # a username or a username and password
  998. (?:[\w\.\-\+%!$&'\(\)*\+,;=]|%[0-9a-f]{2})+@ # combination
  999. )?
  1000. (?:
  1001. (?:[a-z0-9\-\.]|%[0-9a-f]{2})+ # A domain name or a IPv4 address
  1002. |(?:\[(?:[0-9a-f]{0,4}:)*(?:[0-9a-f]{0,4})\]) # or a well formed IPv6 address
  1003. )
  1004. (?::[0-9]+)? # Server port number (optional)
  1005. (?:[\/|\?]
  1006. (?:[\w#!:\.\?\+=&@$'~*,;\/\(\)\[\]\-]|%[0-9a-f]{2}) # The path and query (optional)
  1007. *)?
  1008. $/xi", $url)) {
  1009. return $url;
  1010. }
  1011. return false;
  1012. } else {
  1013. return preg_match("/^(?:[\w#!:\.\?\+=&@$'~*,;\/\(\)\[\]\-]|%[0-9a-f]{2})+$/i", $url) ? $url : false;
  1014. }
  1015. }
  1016. /**
  1017. * Checks whether a given string looks roughly like an email address.
  1018. *
  1019. * @param string $address the e-mail address to be checked
  1020. *
  1021. * @return mixed returns the e-mail if it is valid, FALSE otherwise
  1022. */
  1023. function api_valid_email($address)
  1024. {
  1025. return filter_var($address, FILTER_VALIDATE_EMAIL);
  1026. }
  1027. /* PROTECTION FUNCTIONS
  1028. Use these functions to protect your scripts. */
  1029. /**
  1030. * Function used to protect a course script.
  1031. * The function blocks access when
  1032. * - there is no $_SESSION["_course"] defined; or
  1033. * - $is_allowed_in_course is set to false (this depends on the course
  1034. * visibility and user status).
  1035. *
  1036. * This is only the first proposal, test and improve!
  1037. *
  1038. * @param bool Option to print headers when displaying error message. Default: false
  1039. * @param bool whether session admins should be allowed or not
  1040. *
  1041. * @return bool True if the user has access to the current course or is out of a course context, false otherwise
  1042. *
  1043. * @todo replace global variable
  1044. *
  1045. * @author Roan Embrechts
  1046. */
  1047. function api_protect_course_script($print_headers = false, $allow_session_admins = false, $allow_drh = false)
  1048. {
  1049. $course_info = api_get_course_info();
  1050. if (empty($course_info)) {
  1051. api_not_allowed($print_headers);
  1052. return false;
  1053. }
  1054. $is_allowed_in_course = api_is_allowed_in_course();
  1055. $is_visible = false;
  1056. if (api_is_drh()) {
  1057. return true;
  1058. }
  1059. // Session admin has access to course
  1060. $sessionAccess = api_get_configuration_value('session_admins_access_all_content');
  1061. if ($sessionAccess) {
  1062. $allow_session_admins = true;
  1063. }
  1064. if (api_is_platform_admin($allow_session_admins)) {
  1065. return true;
  1066. }
  1067. if (isset($course_info) && isset($course_info['visibility'])) {
  1068. switch ($course_info['visibility']) {
  1069. default:
  1070. case COURSE_VISIBILITY_CLOSED:
  1071. // Completely closed: the course is only accessible to the teachers. - 0
  1072. if (api_get_user_id() && !api_is_anonymous() && $is_allowed_in_course) {
  1073. $is_visible = true;
  1074. }
  1075. break;
  1076. case COURSE_VISIBILITY_REGISTERED:
  1077. // Private - access authorized to course members only - 1
  1078. if (api_get_user_id() && !api_is_anonymous() && $is_allowed_in_course) {
  1079. $is_visible = true;
  1080. }
  1081. break;
  1082. case COURSE_VISIBILITY_OPEN_PLATFORM:
  1083. // Open - access allowed for users registered on the platform - 2
  1084. if (api_get_user_id() && !api_is_anonymous() && $is_allowed_in_course) {
  1085. $is_visible = true;
  1086. }
  1087. break;
  1088. case COURSE_VISIBILITY_OPEN_WORLD:
  1089. //Open - access allowed for the whole world - 3
  1090. $is_visible = true;
  1091. break;
  1092. case COURSE_VISIBILITY_HIDDEN:
  1093. //Completely closed: the course is only accessible to the teachers. - 0
  1094. if (api_is_platform_admin()) {
  1095. $is_visible = true;
  1096. }
  1097. break;
  1098. }
  1099. //If password is set and user is not registered to the course then the course is not visible
  1100. if ($is_allowed_in_course == false &&
  1101. isset($course_info['registration_code']) &&
  1102. !empty($course_info['registration_code'])
  1103. ) {
  1104. $is_visible = false;
  1105. }
  1106. }
  1107. // Check session visibility
  1108. $session_id = api_get_session_id();
  1109. if (!empty($session_id)) {
  1110. //$is_allowed_in_course was set in local.inc.php
  1111. if (!$is_allowed_in_course) {
  1112. $is_visible = false;
  1113. }
  1114. }
  1115. if (!$is_visible) {
  1116. api_not_allowed($print_headers);
  1117. return false;
  1118. }
  1119. return true;
  1120. }
  1121. /**
  1122. * Function used to protect an admin script.
  1123. *
  1124. * The function blocks access when the user has no platform admin rights
  1125. * with an error message printed on default output
  1126. *
  1127. * @param bool Whether to allow session admins as well
  1128. * @param bool Whether to allow HR directors as well
  1129. * @param string An optional message (already passed through get_lang)
  1130. *
  1131. * @return bool True if user is allowed, false otherwise.
  1132. * The function also outputs an error message in case not allowed
  1133. *
  1134. * @author Roan Embrechts (original author)
  1135. */
  1136. function api_protect_admin_script($allow_sessions_admins = false, $allow_drh = false, $message = null)
  1137. {
  1138. if (!api_is_platform_admin($allow_sessions_admins, $allow_drh)) {
  1139. api_not_allowed(true, $message);
  1140. return false;
  1141. }
  1142. return true;
  1143. }
  1144. /**
  1145. * Function used to protect a teacher script.
  1146. * The function blocks access when the user has no teacher rights.
  1147. *
  1148. * @return bool True if the current user can access the script, false otherwise
  1149. *
  1150. * @author Yoselyn Castillo
  1151. */
  1152. function api_protect_teacher_script()
  1153. {
  1154. if (!api_is_allowed_to_edit()) {
  1155. api_not_allowed(true);
  1156. return false;
  1157. }
  1158. return true;
  1159. }
  1160. /**
  1161. * Function used to prevent anonymous users from accessing a script.
  1162. *
  1163. * @param bool|true $printHeaders
  1164. *
  1165. * @author Roan Embrechts
  1166. *
  1167. * @return bool
  1168. */
  1169. function api_block_anonymous_users($printHeaders = true)
  1170. {
  1171. $user = api_get_user_info();
  1172. if (!(isset($user['user_id']) && $user['user_id']) || api_is_anonymous($user['user_id'], true)) {
  1173. api_not_allowed($printHeaders);
  1174. return false;
  1175. }
  1176. return true;
  1177. }
  1178. /**
  1179. * Returns a rough evaluation of the browser's name and version based on very
  1180. * simple regexp.
  1181. *
  1182. * @return array with the navigator name and version ['name' => '...', 'version' => '...']
  1183. */
  1184. function api_get_navigator()
  1185. {
  1186. $navigator = 'Unknown';
  1187. $version = 0;
  1188. if (!isset($_SERVER['HTTP_USER_AGENT'])) {
  1189. return ['name' => 'Unknown', 'version' => '0.0.0'];
  1190. }
  1191. if (strpos($_SERVER['HTTP_USER_AGENT'], 'Opera') !== false) {
  1192. $navigator = 'Opera';
  1193. list(, $version) = explode('Opera', $_SERVER['HTTP_USER_AGENT']);
  1194. } elseif (strpos($_SERVER['HTTP_USER_AGENT'], 'Edge') !== false) {
  1195. $navigator = 'Edge';
  1196. list(, $version) = explode('Edge', $_SERVER['HTTP_USER_AGENT']);
  1197. } elseif (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false) {
  1198. $navigator = 'Internet Explorer';
  1199. list(, $version) = explode('MSIE ', $_SERVER['HTTP_USER_AGENT']);
  1200. } elseif (strpos($_SERVER['HTTP_USER_AGENT'], 'Chrome') !== false) {
  1201. $navigator = 'Chrome';
  1202. list(, $version) = explode('Chrome', $_SERVER['HTTP_USER_AGENT']);
  1203. } elseif (stripos($_SERVER['HTTP_USER_AGENT'], 'Safari') !== false) {
  1204. $navigator = 'Safari';
  1205. if (stripos($_SERVER['HTTP_USER_AGENT'], 'Version/') !== false) {
  1206. // If this Safari does have the "Version/" string in its user agent
  1207. // then use that as a version indicator rather than what's after
  1208. // "Safari/" which is rather a "build number" or something
  1209. list(, $version) = explode('Version/', $_SERVER['HTTP_USER_AGENT']);
  1210. } else {
  1211. list(, $version) = explode('Safari/', $_SERVER['HTTP_USER_AGENT']);
  1212. }
  1213. } elseif (strpos($_SERVER['HTTP_USER_AGENT'], 'Firefox') !== false) {
  1214. $navigator = 'Firefox';
  1215. list(, $version) = explode('Firefox', $_SERVER['HTTP_USER_AGENT']);
  1216. } elseif (strpos($_SERVER['HTTP_USER_AGENT'], 'Netscape') !== false) {
  1217. $navigator = 'Netscape';
  1218. if (stripos($_SERVER['HTTP_USER_AGENT'], 'Netscape/') !== false) {
  1219. list(, $version) = explode('Netscape', $_SERVER['HTTP_USER_AGENT']);
  1220. } else {
  1221. list(, $version) = explode('Navigator', $_SERVER['HTTP_USER_AGENT']);
  1222. }
  1223. } elseif (strpos($_SERVER['HTTP_USER_AGENT'], 'Konqueror') !== false) {
  1224. $navigator = 'Konqueror';
  1225. list(, $version) = explode('Konqueror', $_SERVER['HTTP_USER_AGENT']);
  1226. } elseif (stripos($_SERVER['HTTP_USER_AGENT'], 'applewebkit') !== false) {
  1227. $navigator = 'AppleWebKit';
  1228. list(, $version) = explode('Version/', $_SERVER['HTTP_USER_AGENT']);
  1229. } elseif (strpos($_SERVER['HTTP_USER_AGENT'], 'Gecko') !== false) {
  1230. $navigator = 'Mozilla';
  1231. list(, $version) = explode('; rv:', $_SERVER['HTTP_USER_AGENT']);
  1232. }
  1233. // Now cut extra stuff around (mostly *after*) the version number
  1234. $version = preg_replace('/^([\/\s])?([\d\.]+)?.*/', '\2', $version);
  1235. if (strpos($version, '.') === false) {
  1236. $version = number_format(doubleval($version), 1);
  1237. }
  1238. $return = ['name' => $navigator, 'version' => $version];
  1239. return $return;
  1240. }
  1241. /**
  1242. * @return true if user self registration is allowed, false otherwise
  1243. */
  1244. function api_is_self_registration_allowed()
  1245. {
  1246. return isset($GLOBALS['allowSelfReg']) ? $GLOBALS['allowSelfReg'] : false;
  1247. }
  1248. /**
  1249. * This function returns the id of the user which is stored in the $_user array.
  1250. *
  1251. * example: The function can be used to check if a user is logged in
  1252. * if (api_get_user_id())
  1253. *
  1254. * @return int the id of the current user, 0 if is empty
  1255. */
  1256. function api_get_user_id()
  1257. {
  1258. $userInfo = Session::read('_user');
  1259. if ($userInfo && isset($userInfo['user_id'])) {
  1260. return (int) $userInfo['user_id'];
  1261. }
  1262. return 0;
  1263. }
  1264. /**
  1265. * Gets the list of courses a specific user is subscribed to.
  1266. *
  1267. * @param int User ID
  1268. * @param bool $fetch_session Whether to get session courses or not - NOT YET IMPLEMENTED
  1269. *
  1270. * @return array Array of courses in the form [0]=>('code'=>xxx,'db'=>xxx,'dir'=>xxx,'status'=>d)
  1271. *
  1272. * @deprecated use CourseManager::get_courses_list_by_user_id()
  1273. */
  1274. function api_get_user_courses($userId, $fetch_session = true)
  1275. {
  1276. // Get out if not integer
  1277. if ($userId != strval(intval($userId))) {
  1278. return [];
  1279. }
  1280. $t_course = Database::get_main_table(TABLE_MAIN_COURSE);
  1281. $t_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  1282. $sql = "SELECT cc.id as real_id, cc.code code, cc.directory dir, cu.status status
  1283. FROM $t_course cc, $t_course_user cu
  1284. WHERE
  1285. cc.id = cu.c_id AND
  1286. cu.user_id = $userId AND
  1287. cu.relation_type <> ".COURSE_RELATION_TYPE_RRHH;
  1288. $result = Database::query($sql);
  1289. if ($result === false) {
  1290. return [];
  1291. }
  1292. $courses = [];
  1293. while ($row = Database::fetch_array($result)) {
  1294. // we only need the database name of the course
  1295. $courses[] = $row;
  1296. }
  1297. return $courses;
  1298. }
  1299. /**
  1300. * Formats user information into a standard array
  1301. * This function should be only used inside api_get_user_info().
  1302. *
  1303. * @param array Non-standard user array
  1304. * @param bool $add_password
  1305. * @param bool $loadAvatars turn off to improve performance
  1306. *
  1307. * @return array Standard user array
  1308. */
  1309. function _api_format_user($user, $add_password = false, $loadAvatars = true)
  1310. {
  1311. $result = [];
  1312. $result['firstname'] = null;
  1313. $result['lastname'] = null;
  1314. if (isset($user['firstname']) && isset($user['lastname'])) { // with only lowercase
  1315. $result['firstname'] = $user['firstname'];
  1316. $result['lastname'] = $user['lastname'];
  1317. } elseif (isset($user['firstName']) && isset($user['lastName'])) { // with uppercase letters
  1318. $result['firstname'] = isset($user['firstName']) ? $user['firstName'] : null;
  1319. $result['lastname'] = isset($user['lastName']) ? $user['lastName'] : null;
  1320. }
  1321. if (isset($user['email'])) {
  1322. $result['mail'] = isset($user['email']) ? $user['email'] : null;
  1323. $result['email'] = isset($user['email']) ? $user['email'] : null;
  1324. } else {
  1325. $result['mail'] = isset($user['mail']) ? $user['mail'] : null;
  1326. $result['email'] = isset($user['mail']) ? $user['mail'] : null;
  1327. }
  1328. $result['complete_name'] = api_get_person_name($result['firstname'], $result['lastname']);
  1329. $result['complete_name_with_username'] = $result['complete_name'];
  1330. if (!empty($user['username']) && !api_get_configuration_value('hide_username_with_complete_name')) {
  1331. $result['complete_name_with_username'] = $result['complete_name'].' ('.$user['username'].')';
  1332. }
  1333. $showEmail = api_get_setting('show_email_addresses') === 'true';
  1334. if (!empty($user['email'])) {
  1335. $result['complete_name_with_email_forced'] = $result['complete_name'].' ('.$user['email'].')';
  1336. if ($showEmail) {
  1337. $result['complete_name_with_email'] = $result['complete_name'].' ('.$user['email'].')';
  1338. }
  1339. } else {
  1340. $result['complete_name_with_email'] = $result['complete_name'];
  1341. $result['complete_name_with_email_forced'] = $result['complete_name'];
  1342. }
  1343. // Kept for historical reasons
  1344. $result['firstName'] = $result['firstname'];
  1345. $result['lastName'] = $result['lastname'];
  1346. $attributes = [
  1347. 'phone',
  1348. 'address',
  1349. 'picture_uri',
  1350. 'official_code',
  1351. 'status',
  1352. 'active',
  1353. 'auth_source',
  1354. 'username',
  1355. 'theme',
  1356. 'language',
  1357. 'creator_id',
  1358. 'registration_date',
  1359. 'hr_dept_id',
  1360. 'expiration_date',
  1361. 'last_login',
  1362. 'user_is_online',
  1363. ];
  1364. if (api_get_setting('extended_profile') === 'true') {
  1365. $attributes[] = 'competences';
  1366. $attributes[] = 'diplomas';
  1367. $attributes[] = 'teach';
  1368. $attributes[] = 'openarea';
  1369. }
  1370. foreach ($attributes as $attribute) {
  1371. $result[$attribute] = isset($user[$attribute]) ? $user[$attribute] : null;
  1372. }
  1373. $user_id = (int) $user['user_id'];
  1374. // Maintain the user_id index for backwards compatibility
  1375. $result['user_id'] = $result['id'] = $user_id;
  1376. // Getting user avatar.
  1377. if ($loadAvatars) {
  1378. $result['avatar'] = '';
  1379. $result['avatar_no_query'] = '';
  1380. $result['avatar_small'] = '';
  1381. $result['avatar_medium'] = '';
  1382. if (!isset($user['avatar'])) {
  1383. $originalFile = UserManager::getUserPicture(
  1384. $user_id,
  1385. USER_IMAGE_SIZE_ORIGINAL,
  1386. null,
  1387. $result
  1388. );
  1389. $result['avatar'] = $originalFile;
  1390. $avatarString = explode('?', $result['avatar']);
  1391. $result['avatar_no_query'] = reset($avatarString);
  1392. } else {
  1393. $result['avatar'] = $user['avatar'];
  1394. $avatarString = explode('?', $user['avatar']);
  1395. $result['avatar_no_query'] = reset($avatarString);
  1396. }
  1397. if (!isset($user['avatar_small'])) {
  1398. $smallFile = UserManager::getUserPicture(
  1399. $user_id,
  1400. USER_IMAGE_SIZE_SMALL,
  1401. null,
  1402. $result
  1403. );
  1404. $result['avatar_small'] = $smallFile;
  1405. } else {
  1406. $result['avatar_small'] = $user['avatar_small'];
  1407. }
  1408. if (!isset($user['avatar_medium'])) {
  1409. $mediumFile = UserManager::getUserPicture(
  1410. $user_id,
  1411. USER_IMAGE_SIZE_MEDIUM,
  1412. null,
  1413. $result
  1414. );
  1415. $result['avatar_medium'] = $mediumFile;
  1416. } else {
  1417. $result['avatar_medium'] = $user['avatar_medium'];
  1418. }
  1419. }
  1420. if (isset($user['user_is_online'])) {
  1421. $result['user_is_online'] = $user['user_is_online'] == true ? 1 : 0;
  1422. }
  1423. if (isset($user['user_is_online_in_chat'])) {
  1424. $result['user_is_online_in_chat'] = (int) $user['user_is_online_in_chat'];
  1425. }
  1426. if ($add_password) {
  1427. $result['password'] = $user['password'];
  1428. }
  1429. if (isset($result['profile_completed'])) {
  1430. $result['profile_completed'] = $user['profile_completed'];
  1431. }
  1432. $result['profile_url'] = api_get_path(WEB_CODE_PATH).'social/profile.php?u='.$user_id;
  1433. // Send message link
  1434. $sendMessage = api_get_path(WEB_AJAX_PATH).'user_manager.ajax.php?a=get_user_popup&user_id='.$user_id;
  1435. $result['complete_name_with_message_link'] = Display::url(
  1436. $result['complete_name_with_username'],
  1437. $sendMessage,
  1438. ['class' => 'ajax']
  1439. );
  1440. if (isset($user['extra'])) {
  1441. $result['extra'] = $user['extra'];
  1442. }
  1443. return $result;
  1444. }
  1445. /**
  1446. * Finds all the information about a user.
  1447. * If no parameter is passed you find all the information about the current user.
  1448. *
  1449. * @param int $user_id
  1450. * @param bool $checkIfUserOnline
  1451. * @param bool $showPassword
  1452. * @param bool $loadExtraData
  1453. * @param bool $loadOnlyVisibleExtraData Get the user extra fields that are visible
  1454. * @param bool $loadAvatars turn off to improve performance and if avatars are not needed
  1455. * @param bool $updateCache update apc cache if exists
  1456. *
  1457. * @return mixed $user_info user_id, lastname, firstname, username, email, etc or false on error
  1458. *
  1459. * @author Patrick Cool <patrick.cool@UGent.be>
  1460. * @author Julio Montoya
  1461. *
  1462. * @version 21 September 2004
  1463. */
  1464. function api_get_user_info(
  1465. $user_id = 0,
  1466. $checkIfUserOnline = false,
  1467. $showPassword = false,
  1468. $loadExtraData = false,
  1469. $loadOnlyVisibleExtraData = false,
  1470. $loadAvatars = true,
  1471. $updateCache = false
  1472. ) {
  1473. $apcVar = null;
  1474. $user = false;
  1475. $cacheAvailable = api_get_configuration_value('apc');
  1476. if (empty($user_id)) {
  1477. $userFromSession = Session::read('_user');
  1478. if (isset($userFromSession)) {
  1479. if ($cacheAvailable === true &&
  1480. (
  1481. empty($userFromSession['is_anonymous']) &&
  1482. (isset($userFromSession['status']) && $userFromSession['status'] != ANONYMOUS)
  1483. )
  1484. ) {
  1485. $apcVar = api_get_configuration_value('apc_prefix').'userinfo_'.$userFromSession['user_id'];
  1486. if (apcu_exists($apcVar)) {
  1487. if ($updateCache) {
  1488. apcu_store($apcVar, $userFromSession, 60);
  1489. }
  1490. $user = apcu_fetch($apcVar);
  1491. } else {
  1492. $user = _api_format_user(
  1493. $userFromSession,
  1494. $showPassword,
  1495. $loadAvatars
  1496. );
  1497. apcu_store($apcVar, $user, 60);
  1498. }
  1499. } else {
  1500. $user = _api_format_user(
  1501. $userFromSession,
  1502. $showPassword,
  1503. $loadAvatars
  1504. );
  1505. }
  1506. return $user;
  1507. }
  1508. return false;
  1509. }
  1510. // Make sure user_id is safe
  1511. $user_id = (int) $user_id;
  1512. // Re-use user information if not stale and already stored in APCu
  1513. if ($cacheAvailable === true) {
  1514. $apcVar = api_get_configuration_value('apc_prefix').'userinfo_'.$user_id;
  1515. if (apcu_exists($apcVar) && $updateCache == false && $checkIfUserOnline == false) {
  1516. $user = apcu_fetch($apcVar);
  1517. return $user;
  1518. }
  1519. }
  1520. $sql = "SELECT * FROM ".Database::get_main_table(TABLE_MAIN_USER)."
  1521. WHERE id = $user_id";
  1522. $result = Database::query($sql);
  1523. if (Database::num_rows($result) > 0) {
  1524. $result_array = Database::fetch_array($result);
  1525. if ($checkIfUserOnline) {
  1526. $use_status_in_platform = user_is_online($user_id);
  1527. $result_array['user_is_online'] = $use_status_in_platform;
  1528. $user_online_in_chat = 0;
  1529. if ($use_status_in_platform) {
  1530. $user_status = UserManager::get_extra_user_data_by_field(
  1531. $user_id,
  1532. 'user_chat_status',
  1533. false,
  1534. true
  1535. );
  1536. if ((int) $user_status['user_chat_status'] == 1) {
  1537. $user_online_in_chat = 1;
  1538. }
  1539. }
  1540. $result_array['user_is_online_in_chat'] = $user_online_in_chat;
  1541. }
  1542. if ($loadExtraData) {
  1543. $fieldValue = new ExtraFieldValue('user');
  1544. $result_array['extra'] = $fieldValue->getAllValuesForAnItem(
  1545. $user_id,
  1546. $loadOnlyVisibleExtraData
  1547. );
  1548. }
  1549. $user = _api_format_user($result_array, $showPassword, $loadAvatars);
  1550. }
  1551. if ($cacheAvailable === true) {
  1552. apcu_store($apcVar, $user, 60);
  1553. }
  1554. return $user;
  1555. }
  1556. /**
  1557. * @param int $userId
  1558. *
  1559. * @return User
  1560. */
  1561. function api_get_user_entity($userId)
  1562. {
  1563. $userId = (int) $userId;
  1564. $repo = UserManager::getRepository();
  1565. /** @var User $user */
  1566. $user = $repo->find($userId);
  1567. return $user;
  1568. }
  1569. /**
  1570. * Finds all the information about a user from username instead of user id.
  1571. *
  1572. * @param string $username
  1573. *
  1574. * @return mixed $user_info array user_id, lastname, firstname, username, email or false on error
  1575. *
  1576. * @author Yannick Warnier <yannick.warnier@beeznest.com>
  1577. */
  1578. function api_get_user_info_from_username($username = '')
  1579. {
  1580. if (empty($username)) {
  1581. return false;
  1582. }
  1583. $username = trim($username);
  1584. $sql = "SELECT * FROM ".Database::get_main_table(TABLE_MAIN_USER)."
  1585. WHERE username='".Database::escape_string($username)."'";
  1586. $result = Database::query($sql);
  1587. if (Database::num_rows($result) > 0) {
  1588. $resultArray = Database::fetch_array($result);
  1589. return _api_format_user($resultArray);
  1590. }
  1591. return false;
  1592. }
  1593. /**
  1594. * Get first user with an email.
  1595. *
  1596. * @param string $email
  1597. *
  1598. * @return array|bool
  1599. */
  1600. function api_get_user_info_from_email($email = '')
  1601. {
  1602. if (empty($email)) {
  1603. return false;
  1604. }
  1605. $sql = "SELECT * FROM ".Database::get_main_table(TABLE_MAIN_USER)."
  1606. WHERE email ='".Database::escape_string($email)."' LIMIT 1";
  1607. $result = Database::query($sql);
  1608. if (Database::num_rows($result) > 0) {
  1609. $resultArray = Database::fetch_array($result);
  1610. return _api_format_user($resultArray);
  1611. }
  1612. return false;
  1613. }
  1614. /**
  1615. * @return string
  1616. */
  1617. function api_get_course_id()
  1618. {
  1619. return Session::read('_cid', null);
  1620. }
  1621. /**
  1622. * Returns the current course id (integer).
  1623. *
  1624. * @param string $code Optional course code
  1625. *
  1626. * @return int
  1627. */
  1628. function api_get_course_int_id($code = null)
  1629. {
  1630. if (!empty($code)) {
  1631. $code = Database::escape_string($code);
  1632. $row = Database::select(
  1633. 'id',
  1634. Database::get_main_table(TABLE_MAIN_COURSE),
  1635. ['where' => ['code = ?' => [$code]]],
  1636. 'first'
  1637. );
  1638. if (is_array($row) && isset($row['id'])) {
  1639. return $row['id'];
  1640. } else {
  1641. return false;
  1642. }
  1643. }
  1644. return Session::read('_real_cid', 0);
  1645. }
  1646. /**
  1647. * Returns the current course directory.
  1648. *
  1649. * This function relies on api_get_course_info()
  1650. *
  1651. * @param string The course code - optional (takes it from session if not given)
  1652. *
  1653. * @return string The directory where the course is located inside the Chamilo "courses" directory
  1654. *
  1655. * @author Yannick Warnier <yannick.warnier@beeznest.com>
  1656. */
  1657. function api_get_course_path($course_code = null)
  1658. {
  1659. $info = !empty($course_code) ? api_get_course_info($course_code) : api_get_course_info();
  1660. return $info['path'];
  1661. }
  1662. /**
  1663. * Gets a course setting from the current course_setting table. Try always using integer values.
  1664. *
  1665. * @param string The name of the setting we want from the table
  1666. * @param string Optional: course code
  1667. * @param string $setting_name
  1668. *
  1669. * @return mixed The value of that setting in that table. Return -1 if not found.
  1670. */
  1671. function api_get_course_setting($setting_name, $course_code = null)
  1672. {
  1673. $course_info = api_get_course_info($course_code);
  1674. $table = Database::get_course_table(TABLE_COURSE_SETTING);
  1675. $setting_name = Database::escape_string($setting_name);
  1676. if (!empty($course_info['real_id']) && !empty($setting_name)) {
  1677. $sql = "SELECT value FROM $table
  1678. WHERE c_id = {$course_info['real_id']} AND variable = '$setting_name'";
  1679. $res = Database::query($sql);
  1680. if (Database::num_rows($res) > 0) {
  1681. $row = Database::fetch_array($res);
  1682. if ($setting_name === 'email_alert_manager_on_new_quiz') {
  1683. if (!is_null($row['value'])) {
  1684. $result = explode(',', $row['value']);
  1685. $row['value'] = $result;
  1686. }
  1687. }
  1688. return $row['value'];
  1689. }
  1690. }
  1691. return -1;
  1692. }
  1693. /**
  1694. * Gets an anonymous user ID.
  1695. *
  1696. * For some tools that need tracking, like the learnpath tool, it is necessary
  1697. * to have a usable user-id to enable some kind of tracking, even if not
  1698. * perfect. An anonymous ID is taken from the users table by looking for a
  1699. * status of "6" (anonymous).
  1700. *
  1701. * @return int User ID of the anonymous user, or O if no anonymous user found
  1702. */
  1703. function api_get_anonymous_id()
  1704. {
  1705. // Find if another anon is connected now
  1706. $table = Database::get_main_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  1707. $tableU = Database::get_main_table(TABLE_MAIN_USER);
  1708. $ip = Database::escape_string(api_get_real_ip());
  1709. $max = api_get_configuration_value('max_anonymous_users');
  1710. if ($max >= 2) {
  1711. $sql = "SELECT * FROM $table as TEL
  1712. JOIN $tableU as U
  1713. ON U.user_id = TEL.login_user_id
  1714. WHERE TEL.user_ip = '$ip'
  1715. AND U.status = ".ANONYMOUS."
  1716. AND U.user_id != 2 ";
  1717. $result = Database::query($sql);
  1718. if (empty(Database::num_rows($result))) {
  1719. $login = uniqid('anon_');
  1720. $anonList = UserManager::get_user_list(['status' => ANONYMOUS], ['registration_date ASC']);
  1721. if (count($anonList) == $max) {
  1722. foreach ($anonList as $userToDelete) {
  1723. UserManager::delete_user($userToDelete['user_id']);
  1724. break;
  1725. }
  1726. }
  1727. $userId = UserManager::create_user(
  1728. $login,
  1729. 'anon',
  1730. ANONYMOUS,
  1731. ' anonymous@localhost',
  1732. $login,
  1733. $login
  1734. );
  1735. return $userId;
  1736. } else {
  1737. $row = Database::fetch_array($result, 'ASSOC');
  1738. return $row['user_id'];
  1739. }
  1740. }
  1741. $table = Database::get_main_table(TABLE_MAIN_USER);
  1742. $sql = "SELECT user_id
  1743. FROM $table
  1744. WHERE status = ".ANONYMOUS." ";
  1745. $res = Database::query($sql);
  1746. if (Database::num_rows($res) > 0) {
  1747. $row = Database::fetch_array($res, 'ASSOC');
  1748. return $row['user_id'];
  1749. }
  1750. // No anonymous user was found.
  1751. return 0;
  1752. }
  1753. /**
  1754. * @param string $courseCode
  1755. * @param int $sessionId
  1756. * @param int $groupId
  1757. *
  1758. * @return string
  1759. */
  1760. function api_get_cidreq_params($courseCode, $sessionId = 0, $groupId = 0)
  1761. {
  1762. $courseCode = !empty($courseCode) ? htmlspecialchars($courseCode) : '';
  1763. $sessionId = !empty($sessionId) ? (int) $sessionId : 0;
  1764. $groupId = !empty($groupId) ? (int) $groupId : 0;
  1765. $url = 'cidReq='.$courseCode;
  1766. $url .= '&id_session='.$sessionId;
  1767. $url .= '&gidReq='.$groupId;
  1768. return $url;
  1769. }
  1770. /**
  1771. * Returns the current course url part including session, group, and gradebook params.
  1772. *
  1773. * @param bool $addSessionId
  1774. * @param bool $addGroupId
  1775. * @param string $origin
  1776. *
  1777. * @return string Course & session references to add to a URL
  1778. */
  1779. function api_get_cidreq($addSessionId = true, $addGroupId = true, $origin = '')
  1780. {
  1781. $courseCode = api_get_course_id();
  1782. $url = empty($courseCode) ? '' : 'cidReq='.htmlspecialchars($courseCode);
  1783. $origin = empty($origin) ? api_get_origin() : Security::remove_XSS($origin);
  1784. if ($addSessionId) {
  1785. if (!empty($url)) {
  1786. $url .= api_get_session_id() == 0 ? '&id_session=0' : '&id_session='.api_get_session_id();
  1787. }
  1788. }
  1789. if ($addGroupId) {
  1790. if (!empty($url)) {
  1791. $url .= api_get_group_id() == 0 ? '&gidReq=0' : '&gidReq='.api_get_group_id();
  1792. }
  1793. }
  1794. if (!empty($url)) {
  1795. $url .= '&gradebook='.intval(api_is_in_gradebook());
  1796. $url .= '&origin='.$origin;
  1797. }
  1798. return $url;
  1799. }
  1800. /**
  1801. * Get if we visited a gradebook page.
  1802. *
  1803. * @return bool
  1804. */
  1805. function api_is_in_gradebook()
  1806. {
  1807. return Session::read('in_gradebook', false);
  1808. }
  1809. /**
  1810. * Set that we are in a page inside a gradebook.
  1811. */
  1812. function api_set_in_gradebook()
  1813. {
  1814. Session::write('in_gradebook', true);
  1815. }
  1816. /**
  1817. * Remove gradebook session.
  1818. */
  1819. function api_remove_in_gradebook()
  1820. {
  1821. Session::erase('in_gradebook');
  1822. }
  1823. /**
  1824. * Returns the current course info array see api_format_course_array()
  1825. * If the course_code is given, the returned array gives info about that
  1826. * particular course, if none given it gets the course info from the session.
  1827. *
  1828. * @param string $course_code
  1829. * @param bool $strict
  1830. *
  1831. * @return array
  1832. */
  1833. function api_get_course_info($course_code = null, $strict = false)
  1834. {
  1835. if (!empty($course_code)) {
  1836. $course_code = Database::escape_string($course_code);
  1837. $courseId = api_get_course_int_id($course_code);
  1838. if (empty($courseId)) {
  1839. return [];
  1840. }
  1841. $course_table = Database::get_main_table(TABLE_MAIN_COURSE);
  1842. $course_cat_table = Database::get_main_table(TABLE_MAIN_CATEGORY);
  1843. $sql = "SELECT
  1844. course.*,
  1845. course_category.code faCode,
  1846. course_category.name faName
  1847. FROM $course_table
  1848. LEFT JOIN $course_cat_table
  1849. ON course.category_code = course_category.code
  1850. WHERE course.id = $courseId";
  1851. $result = Database::query($sql);
  1852. $courseInfo = [];
  1853. if (Database::num_rows($result) > 0) {
  1854. $data = Database::fetch_array($result);
  1855. $courseInfo = api_format_course_array($data);
  1856. }
  1857. return $courseInfo;
  1858. }
  1859. global $_course;
  1860. if ($_course == '-1') {
  1861. $_course = [];
  1862. }
  1863. return $_course;
  1864. }
  1865. /**
  1866. * @param int $courseId
  1867. *
  1868. * @return \Chamilo\CoreBundle\Entity\Course
  1869. */
  1870. function api_get_course_entity($courseId = 0)
  1871. {
  1872. if (empty($courseId)) {
  1873. $courseId = api_get_course_int_id();
  1874. }
  1875. return Database::getManager()->getRepository('ChamiloCoreBundle:Course')->find($courseId);
  1876. }
  1877. /**
  1878. * @param int $id
  1879. *
  1880. * @return \Chamilo\CoreBundle\Entity\Session
  1881. */
  1882. function api_get_session_entity($id = 0)
  1883. {
  1884. if (empty($id)) {
  1885. $id = api_get_session_id();
  1886. }
  1887. return Database::getManager()->getRepository('ChamiloCoreBundle:Session')->find($id);
  1888. }
  1889. /**
  1890. * Returns the current course info array.
  1891. * Now if the course_code is given, the returned array gives info about that
  1892. * particular course, not specially the current one.
  1893. *
  1894. * @param int $id Numeric ID of the course
  1895. *
  1896. * @return array The course info as an array formatted by api_format_course_array, including category.name
  1897. */
  1898. function api_get_course_info_by_id($id = null)
  1899. {
  1900. if (!empty($id)) {
  1901. $id = (int) $id;
  1902. $course_table = Database::get_main_table(TABLE_MAIN_COURSE);
  1903. $course_cat_table = Database::get_main_table(TABLE_MAIN_CATEGORY);
  1904. $sql = "SELECT
  1905. course.*,
  1906. course_category.code faCode,
  1907. course_category.name faName
  1908. FROM $course_table
  1909. LEFT JOIN $course_cat_table
  1910. ON course.category_code = course_category.code
  1911. WHERE course.id = $id";
  1912. $result = Database::query($sql);
  1913. $_course = [];
  1914. if (Database::num_rows($result) > 0) {
  1915. $row = Database::fetch_array($result);
  1916. $_course = api_format_course_array($row);
  1917. }
  1918. return $_course;
  1919. }
  1920. global $_course;
  1921. if ($_course == '-1') {
  1922. $_course = [];
  1923. }
  1924. return $_course;
  1925. }
  1926. /**
  1927. * Reformat the course array (output by api_get_course_info()) in order, mostly,
  1928. * to switch from 'code' to 'id' in the array. This is a legacy feature and is
  1929. * now possibly causing massive confusion as a new "id" field has been added to
  1930. * the course table in 1.9.0.
  1931. *
  1932. * @param $course_data
  1933. *
  1934. * @return array
  1935. *
  1936. * @todo eradicate the false "id"=code field of the $_course array and use the int id
  1937. */
  1938. function api_format_course_array($course_data)
  1939. {
  1940. if (empty($course_data)) {
  1941. return [];
  1942. }
  1943. $_course = [];
  1944. $_course['id'] = $course_data['code'];
  1945. $_course['real_id'] = $course_data['id'];
  1946. // Added
  1947. $_course['code'] = $course_data['code'];
  1948. $_course['name'] = $course_data['title'];
  1949. $_course['title'] = $course_data['title'];
  1950. $_course['official_code'] = $course_data['visual_code'];
  1951. $_course['visual_code'] = $course_data['visual_code'];
  1952. $_course['sysCode'] = $course_data['code'];
  1953. $_course['path'] = $course_data['directory']; // Use as key in path.
  1954. $_course['directory'] = $course_data['directory'];
  1955. $_course['creation_date'] = $course_data['creation_date'];
  1956. $_course['titular'] = $course_data['tutor_name'];
  1957. $_course['language'] = $course_data['course_language'];
  1958. $_course['extLink']['url'] = $course_data['department_url'];
  1959. $_course['extLink']['name'] = $course_data['department_name'];
  1960. $_course['categoryCode'] = $course_data['faCode'];
  1961. $_course['categoryName'] = $course_data['faName'];
  1962. $_course['visibility'] = $course_data['visibility'];
  1963. $_course['subscribe_allowed'] = $course_data['subscribe'];
  1964. $_course['subscribe'] = $course_data['subscribe'];
  1965. $_course['unsubscribe'] = $course_data['unsubscribe'];
  1966. $_course['course_language'] = $course_data['course_language'];
  1967. $_course['activate_legal'] = isset($course_data['activate_legal']) ? $course_data['activate_legal'] : false;
  1968. $_course['legal'] = $course_data['legal'];
  1969. $_course['show_score'] = $course_data['show_score']; //used in the work tool
  1970. $_course['department_name'] = $course_data['department_name'];
  1971. $_course['department_url'] = $course_data['department_url'];
  1972. $courseSys = api_get_path(SYS_COURSE_PATH).$course_data['directory'];
  1973. $webCourseHome = api_get_path(WEB_COURSE_PATH).$course_data['directory'];
  1974. // Course password
  1975. $_course['registration_code'] = !empty($course_data['registration_code']) ? sha1($course_data['registration_code']) : null;
  1976. $_course['disk_quota'] = $course_data['disk_quota'];
  1977. $_course['course_public_url'] = $webCourseHome.'/index.php';
  1978. if (array_key_exists('add_teachers_to_sessions_courses', $course_data)) {
  1979. $_course['add_teachers_to_sessions_courses'] = $course_data['add_teachers_to_sessions_courses'];
  1980. }
  1981. // Course image
  1982. $_course['course_image_source'] = '';
  1983. if (file_exists($courseSys.'/course-pic85x85.png')) {
  1984. $url_image = $webCourseHome.'/course-pic85x85.png';
  1985. $_course['course_image_source'] = $courseSys.'/course-pic85x85.png';
  1986. } else {
  1987. $url_image = Display::return_icon(
  1988. 'course.png',
  1989. null,
  1990. null,
  1991. ICON_SIZE_BIG,
  1992. null,
  1993. true,
  1994. false
  1995. );
  1996. }
  1997. $_course['course_image'] = $url_image;
  1998. // Course large image
  1999. $_course['course_image_large_source'] = '';
  2000. if (file_exists($courseSys.'/course-pic.png')) {
  2001. $url_image = $webCourseHome.'/course-pic.png';
  2002. $_course['course_image_large_source'] = $courseSys.'/course-pic.png';
  2003. } else {
  2004. $url_image = Display::return_icon(
  2005. 'session_default.png',
  2006. null,
  2007. null,
  2008. null,
  2009. null,
  2010. true,
  2011. false
  2012. );
  2013. }
  2014. $_course['course_image_large'] = $url_image;
  2015. return $_course;
  2016. }
  2017. /**
  2018. * Returns a difficult to guess password.
  2019. *
  2020. * @param int $length the length of the password
  2021. *
  2022. * @return string the generated password
  2023. */
  2024. function api_generate_password($length = 8)
  2025. {
  2026. if ($length < 2) {
  2027. $length = 2;
  2028. }
  2029. $charactersLowerCase = 'abcdefghijkmnopqrstuvwxyz';
  2030. $charactersUpperCase = 'ABCDEFGHJKLMNPQRSTUVWXYZ';
  2031. $minNumbers = 2;
  2032. $length = $length - $minNumbers;
  2033. $minLowerCase = round($length / 2);
  2034. $minUpperCase = $length - $minLowerCase;
  2035. $password = '';
  2036. $passwordRequirements = api_get_configuration_value('password_requirements');
  2037. $factory = new RandomLib\Factory();
  2038. $generator = $factory->getGenerator(new SecurityLib\Strength(SecurityLib\Strength::MEDIUM));
  2039. if (!empty($passwordRequirements)) {
  2040. $length = $passwordRequirements['min']['length'];
  2041. $minNumbers = $passwordRequirements['min']['numeric'];
  2042. $minLowerCase = $passwordRequirements['min']['lowercase'];
  2043. $minUpperCase = $passwordRequirements['min']['uppercase'];
  2044. $rest = $length - $minNumbers - $minLowerCase - $minUpperCase;
  2045. // Add the rest to fill the length requirement
  2046. if ($rest > 0) {
  2047. $password .= $generator->generateString($rest, $charactersLowerCase.$charactersUpperCase);
  2048. }
  2049. }
  2050. // Min digits default 2
  2051. for ($i = 0; $i < $minNumbers; $i++) {
  2052. $password .= $generator->generateInt(2, 9);
  2053. }
  2054. // Min lowercase
  2055. $password .= $generator->generateString($minLowerCase, $charactersLowerCase);
  2056. // Min uppercase
  2057. $password .= $generator->generateString($minUpperCase, $charactersUpperCase);
  2058. $password = str_shuffle($password);
  2059. return $password;
  2060. }
  2061. /**
  2062. * Checks a password to see wether it is OK to use.
  2063. *
  2064. * @param string $password
  2065. *
  2066. * @return bool if the password is acceptable, false otherwise
  2067. * Notes about what a password "OK to use" is:
  2068. * 1. The password should be at least 5 characters long.
  2069. * 2. Only English letters (uppercase or lowercase, it doesn't matter) and digits are allowed.
  2070. * 3. The password should contain at least 3 letters.
  2071. * 4. It should contain at least 2 digits.
  2072. * Settings will change if the configuration value is set: password_requirements
  2073. */
  2074. function api_check_password($password)
  2075. {
  2076. $passwordRequirements = Security::getPasswordRequirements();
  2077. $minLength = $passwordRequirements['min']['length'];
  2078. $minNumbers = $passwordRequirements['min']['numeric'];
  2079. // Optional
  2080. $minLowerCase = $passwordRequirements['min']['lowercase'];
  2081. $minUpperCase = $passwordRequirements['min']['uppercase'];
  2082. $minLetters = $minLowerCase + $minUpperCase;
  2083. $passwordLength = api_strlen($password);
  2084. $conditions = [
  2085. 'min_length' => $passwordLength >= $minLength,
  2086. ];
  2087. $digits = 0;
  2088. $lowerCase = 0;
  2089. $upperCase = 0;
  2090. for ($i = 0; $i < $passwordLength; $i++) {
  2091. $currentCharacterCode = api_ord(api_substr($password, $i, 1));
  2092. if ($currentCharacterCode >= 65 && $currentCharacterCode <= 90) {
  2093. $upperCase++;
  2094. }
  2095. if ($currentCharacterCode >= 97 && $currentCharacterCode <= 122) {
  2096. $lowerCase++;
  2097. }
  2098. if ($currentCharacterCode >= 48 && $currentCharacterCode <= 57) {
  2099. $digits++;
  2100. }
  2101. }
  2102. // Min number of digits
  2103. $conditions['min_numeric'] = $digits >= $minNumbers;
  2104. if (!empty($minUpperCase)) {
  2105. // Uppercase
  2106. $conditions['min_uppercase'] = $upperCase >= $minUpperCase;
  2107. }
  2108. if (!empty($minLowerCase)) {
  2109. // Lowercase
  2110. $conditions['min_lowercase'] = $upperCase >= $minLowerCase;
  2111. }
  2112. // Min letters
  2113. $letters = $upperCase + $lowerCase;
  2114. $conditions['min_letters'] = $letters >= $minLetters;
  2115. $isPasswordOk = true;
  2116. foreach ($conditions as $condition) {
  2117. if ($condition === false) {
  2118. $isPasswordOk = false;
  2119. break;
  2120. }
  2121. }
  2122. if ($isPasswordOk === false) {
  2123. $output = get_lang('NewPasswordRequirementsNotMatched').'<br />';
  2124. $output .= Security::getPasswordRequirementsToString($conditions);
  2125. Display::addFlash(Display::return_message($output, 'warning', false));
  2126. }
  2127. return $isPasswordOk;
  2128. }
  2129. /**
  2130. * Clears the user ID from the session if it was the anonymous user. Generally
  2131. * used on out-of-tools pages to remove a user ID that could otherwise be used
  2132. * in the wrong context.
  2133. * This function is to be used in conjunction with the api_set_anonymous()
  2134. * function to simulate the user existence in case of an anonymous visit.
  2135. *
  2136. * @param bool database check switch - passed to api_is_anonymous()
  2137. *
  2138. * @return bool true if succesfully unregistered, false if not anonymous
  2139. */
  2140. function api_clear_anonymous($db_check = false)
  2141. {
  2142. global $_user;
  2143. if (api_is_anonymous($_user['user_id'], $db_check)) {
  2144. unset($_user['user_id']);
  2145. Session::erase('_uid');
  2146. return true;
  2147. }
  2148. return false;
  2149. }
  2150. /**
  2151. * Returns the status string corresponding to the status code.
  2152. *
  2153. * @author Noel Dieschburg
  2154. *
  2155. * @param the int status code
  2156. *
  2157. * @return string
  2158. */
  2159. function get_status_from_code($status_code)
  2160. {
  2161. switch ($status_code) {
  2162. case STUDENT:
  2163. return get_lang('Student', '');
  2164. case COURSEMANAGER:
  2165. return get_lang('Teacher', '');
  2166. case SESSIONADMIN:
  2167. return get_lang('SessionsAdmin', '');
  2168. case DRH:
  2169. return get_lang('Drh', '');
  2170. }
  2171. }
  2172. /**
  2173. * Sets the current user as anonymous if it hasn't been identified yet. This
  2174. * function should be used inside a tool only. The function api_clear_anonymous()
  2175. * acts in the opposite direction by clearing the anonymous user's data every
  2176. * time we get on a course homepage or on a neutral page (index, admin, my space).
  2177. *
  2178. * @return bool true if set user as anonymous, false if user was already logged in or anonymous id could not be found
  2179. */
  2180. function api_set_anonymous()
  2181. {
  2182. global $_user;
  2183. if (!empty($_user['user_id'])) {
  2184. return false;
  2185. }
  2186. $user_id = api_get_anonymous_id();
  2187. if ($user_id == 0) {
  2188. return false;
  2189. }
  2190. if (isset($_user['is_anonymous'])) {
  2191. return false;
  2192. }
  2193. Session::erase('_user');
  2194. $_user['user_id'] = $user_id;
  2195. $_user['is_anonymous'] = true;
  2196. $GLOBALS['_user'] = $_user;
  2197. Session::write('_user', $_user);
  2198. return true;
  2199. }
  2200. /**
  2201. * Gets the current Chamilo (not PHP/cookie) session ID.
  2202. *
  2203. * @return int O if no active session, the session ID otherwise
  2204. */
  2205. function api_get_session_id()
  2206. {
  2207. return (int) Session::read('id_session', 0);
  2208. }
  2209. /**
  2210. * Gets the current Chamilo (not social network) group ID.
  2211. *
  2212. * @return int O if no active session, the session ID otherwise
  2213. */
  2214. function api_get_group_id()
  2215. {
  2216. return Session::read('_gid', 0);
  2217. }
  2218. /**
  2219. * Gets the current or given session name.
  2220. *
  2221. * @param int Session ID (optional)
  2222. *
  2223. * @return string The session name, or null if not found
  2224. */
  2225. function api_get_session_name($session_id = 0)
  2226. {
  2227. if (empty($session_id)) {
  2228. $session_id = api_get_session_id();
  2229. if (empty($session_id)) {
  2230. return null;
  2231. }
  2232. }
  2233. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  2234. $s = "SELECT name FROM $t WHERE id = ".(int) $session_id;
  2235. $r = Database::query($s);
  2236. $c = Database::num_rows($r);
  2237. if ($c > 0) {
  2238. //technically, there can be only one, but anyway we take the first
  2239. $rec = Database::fetch_array($r);
  2240. return $rec['name'];
  2241. }
  2242. return null;
  2243. }
  2244. /**
  2245. * Gets the session info by id.
  2246. *
  2247. * @param int $id Session ID
  2248. *
  2249. * @return array information of the session
  2250. */
  2251. function api_get_session_info($id)
  2252. {
  2253. return SessionManager::fetch($id);
  2254. }
  2255. /**
  2256. * Gets the session visibility by session id.
  2257. *
  2258. * @param int $session_id
  2259. * @param int $courseId
  2260. * @param bool $ignore_visibility_for_admins
  2261. *
  2262. * @return int
  2263. * 0 = session still available,
  2264. * SESSION_VISIBLE_READ_ONLY = 1,
  2265. * SESSION_VISIBLE = 2,
  2266. * SESSION_INVISIBLE = 3
  2267. */
  2268. function api_get_session_visibility(
  2269. $session_id,
  2270. $courseId = null,
  2271. $ignore_visibility_for_admins = true
  2272. ) {
  2273. if (api_is_platform_admin()) {
  2274. if ($ignore_visibility_for_admins) {
  2275. return SESSION_AVAILABLE;
  2276. }
  2277. }
  2278. $now = time();
  2279. if (empty($session_id)) {
  2280. return 0; // Means that the session is still available.
  2281. }
  2282. $session_id = (int) $session_id;
  2283. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  2284. $result = Database::query("SELECT * FROM $tbl_session WHERE id = $session_id");
  2285. if (Database::num_rows($result) <= 0) {
  2286. return SESSION_INVISIBLE;
  2287. }
  2288. $row = Database::fetch_array($result, 'ASSOC');
  2289. $visibility = $original_visibility = $row['visibility'];
  2290. // I don't care the session visibility.
  2291. if (empty($row['access_start_date']) && empty($row['access_end_date'])) {
  2292. // Session duration per student.
  2293. if (isset($row['duration']) && !empty($row['duration'])) {
  2294. $duration = $row['duration'] * 24 * 60 * 60;
  2295. $courseAccess = CourseManager::getFirstCourseAccessPerSessionAndUser($session_id, api_get_user_id());
  2296. // If there is a session duration but there is no previous
  2297. // access by the user, then the session is still available
  2298. if (count($courseAccess) == 0) {
  2299. return SESSION_AVAILABLE;
  2300. }
  2301. $currentTime = time();
  2302. $firstAccess = isset($courseAccess['login_course_date'])
  2303. ? api_strtotime($courseAccess['login_course_date'], 'UTC')
  2304. : 0;
  2305. $userDurationData = SessionManager::getUserSession(
  2306. api_get_user_id(),
  2307. $session_id
  2308. );
  2309. $userDuration = isset($userDurationData['duration'])
  2310. ? (intval($userDurationData['duration']) * 24 * 60 * 60)
  2311. : 0;
  2312. $totalDuration = $firstAccess + $duration + $userDuration;
  2313. return $totalDuration > $currentTime ? SESSION_AVAILABLE : SESSION_VISIBLE_READ_ONLY;
  2314. }
  2315. return SESSION_AVAILABLE;
  2316. }
  2317. // If start date was set.
  2318. if (!empty($row['access_start_date'])) {
  2319. $visibility = $now > api_strtotime($row['access_start_date'], 'UTC') ? SESSION_AVAILABLE : SESSION_INVISIBLE;
  2320. }
  2321. // If the end date was set.
  2322. if (!empty($row['access_end_date'])) {
  2323. // Only if date_start said that it was ok
  2324. if ($visibility === SESSION_AVAILABLE) {
  2325. $visibility = $now < api_strtotime($row['access_end_date'], 'UTC')
  2326. ? SESSION_AVAILABLE // Date still available
  2327. : $row['visibility']; // Session ends
  2328. }
  2329. }
  2330. // If I'm a coach the visibility can change in my favor depending in the coach dates.
  2331. $isCoach = api_is_coach($session_id, $courseId);
  2332. if ($isCoach) {
  2333. // Test start date.
  2334. if (!empty($row['coach_access_start_date'])) {
  2335. $start = api_strtotime($row['coach_access_start_date'], 'UTC');
  2336. $visibility = $start < $now ? SESSION_AVAILABLE : SESSION_INVISIBLE;
  2337. }
  2338. // Test end date.
  2339. if (!empty($row['coach_access_end_date'])) {
  2340. if ($visibility === SESSION_AVAILABLE) {
  2341. $endDateCoach = api_strtotime($row['coach_access_end_date'], 'UTC');
  2342. $visibility = $endDateCoach >= $now ? SESSION_AVAILABLE : $row['visibility'];
  2343. }
  2344. }
  2345. }
  2346. return $visibility;
  2347. }
  2348. /**
  2349. * This function returns a (star) session icon if the session is not null and
  2350. * the user is not a student.
  2351. *
  2352. * @param int $session_id
  2353. * @param int $status_id User status id - if 5 (student), will return empty
  2354. *
  2355. * @return string Session icon
  2356. */
  2357. function api_get_session_image($session_id, $status_id)
  2358. {
  2359. $session_id = (int) $session_id;
  2360. $session_img = '';
  2361. if ((int) $status_id != 5) { //check whether is not a student
  2362. if ($session_id > 0) {
  2363. $session_img = "&nbsp;&nbsp;".Display::return_icon(
  2364. 'star.png',
  2365. get_lang('SessionSpecificResource'),
  2366. ['align' => 'absmiddle'],
  2367. ICON_SIZE_SMALL
  2368. );
  2369. }
  2370. }
  2371. return $session_img;
  2372. }
  2373. /**
  2374. * This function add an additional condition according to the session of the course.
  2375. *
  2376. * @param int $session_id session id
  2377. * @param bool $and optional, true if more than one condition false if the only condition in the query
  2378. * @param bool $with_base_content optional, true to accept content with session=0 as well,
  2379. * false for strict session condition
  2380. * @param string $session_field
  2381. *
  2382. * @return string condition of the session
  2383. */
  2384. function api_get_session_condition(
  2385. $session_id,
  2386. $and = true,
  2387. $with_base_content = false,
  2388. $session_field = 'session_id'
  2389. ) {
  2390. $session_id = (int) $session_id;
  2391. if (empty($session_field)) {
  2392. $session_field = "session_id";
  2393. }
  2394. // Condition to show resources by session
  2395. $condition_add = $and ? " AND " : " WHERE ";
  2396. if ($with_base_content) {
  2397. $condition_session = $condition_add." ( $session_field = $session_id OR $session_field = 0 OR $session_field IS NULL) ";
  2398. } else {
  2399. if (empty($session_id)) {
  2400. $condition_session = $condition_add." ($session_field = $session_id OR $session_field IS NULL)";
  2401. } else {
  2402. $condition_session = $condition_add." $session_field = $session_id ";
  2403. }
  2404. }
  2405. return $condition_session;
  2406. }
  2407. /**
  2408. * Returns the value of a setting from the web-adjustable admin config settings.
  2409. *
  2410. * WARNING true/false are stored as string, so when comparing you need to check e.g.
  2411. * if (api_get_setting('show_navigation_menu') == 'true') //CORRECT
  2412. * instead of
  2413. * if (api_get_setting('show_navigation_menu') == true) //INCORRECT
  2414. *
  2415. * @param string $variable The variable name
  2416. * @param string $key The subkey (sub-variable) if any. Defaults to NULL
  2417. *
  2418. * @return string
  2419. *
  2420. * @author René Haentjens
  2421. * @author Bart Mollet
  2422. */
  2423. function api_get_setting($variable, $key = null)
  2424. {
  2425. global $_setting;
  2426. if ($variable == 'header_extra_content') {
  2427. $filename = api_get_home_path().'header_extra_content.txt';
  2428. if (file_exists($filename)) {
  2429. $value = file_get_contents($filename);
  2430. return $value;
  2431. } else {
  2432. return '';
  2433. }
  2434. }
  2435. if ($variable == 'footer_extra_content') {
  2436. $filename = api_get_home_path().'footer_extra_content.txt';
  2437. if (file_exists($filename)) {
  2438. $value = file_get_contents($filename);
  2439. return $value;
  2440. } else {
  2441. return '';
  2442. }
  2443. }
  2444. $value = null;
  2445. if (is_null($key)) {
  2446. $value = ((isset($_setting[$variable]) && $_setting[$variable] != '') ? $_setting[$variable] : null);
  2447. } else {
  2448. if (isset($_setting[$variable][$key])) {
  2449. $value = $_setting[$variable][$key];
  2450. }
  2451. }
  2452. return $value;
  2453. }
  2454. /**
  2455. * @param string $plugin
  2456. * @param string $variable
  2457. *
  2458. * @return string
  2459. */
  2460. function api_get_plugin_setting($plugin, $variable)
  2461. {
  2462. $variableName = $plugin.'_'.$variable;
  2463. $result = api_get_setting($variableName);
  2464. if (isset($result[$plugin])) {
  2465. $value = $result[$plugin];
  2466. $unserialized = api_unserialize_content('not_allowed_classes', $value, true);
  2467. if (false !== $unserialized) {
  2468. $value = $unserialized;
  2469. }
  2470. return $value;
  2471. }
  2472. return null;
  2473. }
  2474. /**
  2475. * Returns the value of a setting from the web-adjustable admin config settings.
  2476. */
  2477. function api_get_settings_params($params)
  2478. {
  2479. $table = Database::get_main_table(TABLE_MAIN_SETTINGS_CURRENT);
  2480. $result = Database::select('*', $table, ['where' => $params]);
  2481. return $result;
  2482. }
  2483. /**
  2484. * @param array $params example: [id = ? => '1']
  2485. *
  2486. * @return array
  2487. */
  2488. function api_get_settings_params_simple($params)
  2489. {
  2490. $table = Database::get_main_table(TABLE_MAIN_SETTINGS_CURRENT);
  2491. $result = Database::select('*', $table, ['where' => $params], 'one');
  2492. return $result;
  2493. }
  2494. /**
  2495. * Returns the value of a setting from the web-adjustable admin config settings.
  2496. */
  2497. function api_delete_settings_params($params)
  2498. {
  2499. $table = Database::get_main_table(TABLE_MAIN_SETTINGS_CURRENT);
  2500. $result = Database::delete($table, $params);
  2501. return $result;
  2502. }
  2503. /**
  2504. * Returns an escaped version of $_SERVER['PHP_SELF'] to avoid XSS injection.
  2505. *
  2506. * @return string Escaped version of $_SERVER['PHP_SELF']
  2507. */
  2508. function api_get_self()
  2509. {
  2510. return htmlentities($_SERVER['PHP_SELF']);
  2511. }
  2512. /* USER PERMISSIONS */
  2513. /**
  2514. * Checks whether current user is a platform administrator.
  2515. *
  2516. * @param bool $allowSessionAdmins Whether session admins should be considered admins or not
  2517. * @param bool $allowDrh Whether HR directors should be considered admins or not
  2518. *
  2519. * @return bool true if the user has platform admin rights,
  2520. * false otherwise
  2521. *
  2522. * @see usermanager::is_admin(user_id) for a user-id specific function
  2523. */
  2524. function api_is_platform_admin($allowSessionAdmins = false, $allowDrh = false)
  2525. {
  2526. $isAdmin = Session::read('is_platformAdmin');
  2527. if ($isAdmin) {
  2528. return true;
  2529. }
  2530. $user = api_get_user_info();
  2531. return
  2532. isset($user['status']) &&
  2533. (
  2534. ($allowSessionAdmins && $user['status'] == SESSIONADMIN) ||
  2535. ($allowDrh && $user['status'] == DRH)
  2536. );
  2537. }
  2538. /**
  2539. * Checks whether the user given as user id is in the admin table.
  2540. *
  2541. * @param int $user_id If none provided, will use current user
  2542. * @param int $url URL ID. If provided, also check if the user is active on given URL
  2543. *
  2544. * @return bool True if the user is admin, false otherwise
  2545. */
  2546. function api_is_platform_admin_by_id($user_id = null, $url = null)
  2547. {
  2548. $user_id = (int) $user_id;
  2549. if (empty($user_id)) {
  2550. $user_id = api_get_user_id();
  2551. }
  2552. $admin_table = Database::get_main_table(TABLE_MAIN_ADMIN);
  2553. $sql = "SELECT * FROM $admin_table WHERE user_id = $user_id";
  2554. $res = Database::query($sql);
  2555. $is_admin = Database::num_rows($res) === 1;
  2556. if (!$is_admin || !isset($url)) {
  2557. return $is_admin;
  2558. }
  2559. // We get here only if $url is set
  2560. $url = (int) $url;
  2561. $url_user_table = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_USER);
  2562. $sql = "SELECT * FROM $url_user_table
  2563. WHERE access_url_id = $url AND user_id = $user_id";
  2564. $res = Database::query($sql);
  2565. $result = Database::num_rows($res) === 1;
  2566. return $result;
  2567. }
  2568. /**
  2569. * Returns the user's numeric status ID from the users table.
  2570. *
  2571. * @param int $user_id If none provided, will use current user
  2572. *
  2573. * @return int User's status (1 for teacher, 5 for student, etc)
  2574. */
  2575. function api_get_user_status($user_id = null)
  2576. {
  2577. $user_id = (int) $user_id;
  2578. if (empty($user_id)) {
  2579. $user_id = api_get_user_id();
  2580. }
  2581. $table = Database::get_main_table(TABLE_MAIN_USER);
  2582. $sql = "SELECT status FROM $table WHERE user_id = $user_id ";
  2583. $result = Database::query($sql);
  2584. $status = null;
  2585. if (Database::num_rows($result)) {
  2586. $row = Database::fetch_array($result);
  2587. $status = $row['status'];
  2588. }
  2589. return $status;
  2590. }
  2591. /**
  2592. * Checks whether current user is allowed to create courses.
  2593. *
  2594. * @return bool true if the user has course creation rights,
  2595. * false otherwise
  2596. */
  2597. function api_is_allowed_to_create_course()
  2598. {
  2599. if (api_is_platform_admin()) {
  2600. return true;
  2601. }
  2602. // Teachers can only create courses
  2603. if (api_is_teacher()) {
  2604. if (api_get_setting('allow_users_to_create_courses') === 'true') {
  2605. return true;
  2606. } else {
  2607. return false;
  2608. }
  2609. }
  2610. return Session::read('is_allowedCreateCourse');
  2611. }
  2612. /**
  2613. * Checks whether the current user is a course administrator.
  2614. *
  2615. * @return bool True if current user is a course administrator
  2616. */
  2617. function api_is_course_admin()
  2618. {
  2619. if (api_is_platform_admin()) {
  2620. return true;
  2621. }
  2622. return Session::read('is_courseAdmin');
  2623. }
  2624. /**
  2625. * Checks whether the current user is a course coach
  2626. * Based on the presence of user in session.id_coach (session general coach).
  2627. *
  2628. * @return bool True if current user is a course coach
  2629. */
  2630. function api_is_session_general_coach()
  2631. {
  2632. return Session::read('is_session_general_coach');
  2633. }
  2634. /**
  2635. * Checks whether the current user is a course tutor
  2636. * Based on the presence of user in session_rel_course_rel_user.user_id with status = 2.
  2637. *
  2638. * @return bool True if current user is a course tutor
  2639. */
  2640. function api_is_course_tutor()
  2641. {
  2642. return Session::read('is_courseTutor');
  2643. }
  2644. /**
  2645. * @param int $user_id
  2646. * @param int $courseId
  2647. * @param int $session_id
  2648. *
  2649. * @return bool
  2650. */
  2651. function api_is_course_session_coach($user_id, $courseId, $session_id)
  2652. {
  2653. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  2654. $session_rel_course_rel_user_table = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  2655. $user_id = (int) $user_id;
  2656. $session_id = (int) $session_id;
  2657. $courseId = (int) $courseId;
  2658. $sql = "SELECT DISTINCT session.id
  2659. FROM $session_table
  2660. INNER JOIN $session_rel_course_rel_user_table session_rc_ru
  2661. ON session.id = session_rc_ru.session_id
  2662. WHERE
  2663. session_rc_ru.user_id = '".$user_id."' AND
  2664. session_rc_ru.c_id = '$courseId' AND
  2665. session_rc_ru.status = 2 AND
  2666. session_rc_ru.session_id = '$session_id'";
  2667. $result = Database::query($sql);
  2668. return Database::num_rows($result) > 0;
  2669. }
  2670. /**
  2671. * Checks whether the current user is a course or session coach.
  2672. *
  2673. * @param int $session_id
  2674. * @param int $courseId
  2675. * @param bool Check whether we are in student view and, if we are, return false
  2676. *
  2677. * @return bool True if current user is a course or session coach
  2678. */
  2679. function api_is_coach($session_id = 0, $courseId = null, $check_student_view = true)
  2680. {
  2681. $userId = api_get_user_id();
  2682. if (!empty($session_id)) {
  2683. $session_id = (int) $session_id;
  2684. } else {
  2685. $session_id = api_get_session_id();
  2686. }
  2687. // The student preview was on
  2688. if ($check_student_view && api_is_student_view_active()) {
  2689. return false;
  2690. }
  2691. if (!empty($courseId)) {
  2692. $courseId = (int) $courseId;
  2693. } else {
  2694. $courseId = api_get_course_int_id();
  2695. }
  2696. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  2697. $session_rel_course_rel_user_table = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  2698. $sessionIsCoach = [];
  2699. if (!empty($courseId)) {
  2700. $sql = "SELECT DISTINCT s.id, name, access_start_date, access_end_date
  2701. FROM $session_table s
  2702. INNER JOIN $session_rel_course_rel_user_table session_rc_ru
  2703. ON session_rc_ru.session_id = s.id AND session_rc_ru.user_id = '".$userId."'
  2704. WHERE
  2705. session_rc_ru.c_id = '$courseId' AND
  2706. session_rc_ru.status = 2 AND
  2707. session_rc_ru.session_id = '$session_id'";
  2708. $result = Database::query($sql);
  2709. $sessionIsCoach = Database::store_result($result);
  2710. }
  2711. if (!empty($session_id)) {
  2712. $sql = "SELECT DISTINCT id, name, access_start_date, access_end_date
  2713. FROM $session_table
  2714. WHERE session.id_coach = $userId AND id = $session_id
  2715. ORDER BY access_start_date, access_end_date, name";
  2716. $result = Database::query($sql);
  2717. if (!empty($sessionIsCoach)) {
  2718. $sessionIsCoach = array_merge(
  2719. $sessionIsCoach,
  2720. Database::store_result($result)
  2721. );
  2722. } else {
  2723. $sessionIsCoach = Database::store_result($result);
  2724. }
  2725. }
  2726. return count($sessionIsCoach) > 0;
  2727. }
  2728. /**
  2729. * Checks whether the current user is a session administrator.
  2730. *
  2731. * @return bool True if current user is a course administrator
  2732. */
  2733. function api_is_session_admin()
  2734. {
  2735. $user = api_get_user_info();
  2736. return isset($user['status']) && $user['status'] == SESSIONADMIN;
  2737. }
  2738. /**
  2739. * Checks whether the current user is a human resources manager.
  2740. *
  2741. * @return bool True if current user is a human resources manager
  2742. */
  2743. function api_is_drh()
  2744. {
  2745. $user = api_get_user_info();
  2746. return isset($user['status']) && $user['status'] == DRH;
  2747. }
  2748. /**
  2749. * Checks whether the current user is a student.
  2750. *
  2751. * @return bool True if current user is a human resources manager
  2752. */
  2753. function api_is_student()
  2754. {
  2755. $user = api_get_user_info();
  2756. return isset($user['status']) && $user['status'] == STUDENT;
  2757. }
  2758. /**
  2759. * Checks whether the current user has the status 'teacher'.
  2760. *
  2761. * @return bool True if current user is a human resources manager
  2762. */
  2763. function api_is_teacher()
  2764. {
  2765. $user = api_get_user_info();
  2766. return isset($user['status']) && $user['status'] == COURSEMANAGER;
  2767. }
  2768. /**
  2769. * Checks whether the current user is a invited user.
  2770. *
  2771. * @return bool
  2772. */
  2773. function api_is_invitee()
  2774. {
  2775. $user = api_get_user_info();
  2776. return isset($user['status']) && $user['status'] == INVITEE;
  2777. }
  2778. /**
  2779. * This function checks whether a session is assigned into a category.
  2780. *
  2781. * @param int - session id
  2782. * @param string - category name
  2783. *
  2784. * @return bool - true if is found, otherwise false
  2785. */
  2786. function api_is_session_in_category($session_id, $category_name)
  2787. {
  2788. $session_id = (int) $session_id;
  2789. $category_name = Database::escape_string($category_name);
  2790. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  2791. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  2792. $sql = "SELECT 1
  2793. FROM $tbl_session
  2794. WHERE $session_id IN (
  2795. SELECT s.id FROM $tbl_session s, $tbl_session_category sc
  2796. WHERE
  2797. s.session_category_id = sc.id AND
  2798. sc.name LIKE '%$category_name'
  2799. )";
  2800. $rs = Database::query($sql);
  2801. if (Database::num_rows($rs) > 0) {
  2802. return true;
  2803. } else {
  2804. return false;
  2805. }
  2806. }
  2807. /**
  2808. * Displays the title of a tool.
  2809. * Normal use: parameter is a string:
  2810. * api_display_tool_title("My Tool").
  2811. *
  2812. * Optionally, there can be a subtitle below
  2813. * the normal title, and / or a supra title above the normal title.
  2814. *
  2815. * e.g. supra title:
  2816. * group
  2817. * GROUP PROPERTIES
  2818. *
  2819. * e.g. subtitle:
  2820. * AGENDA
  2821. * calender & events tool
  2822. *
  2823. * @author Hugues Peeters <hugues.peeters@claroline.net>
  2824. *
  2825. * @param mixed $title_element - it could either be a string or an array
  2826. * containing 'supraTitle', 'mainTitle',
  2827. * 'subTitle'
  2828. */
  2829. function api_display_tool_title($title_element)
  2830. {
  2831. if (is_string($title_element)) {
  2832. $tit = $title_element;
  2833. unset($title_element);
  2834. $title_element['mainTitle'] = $tit;
  2835. }
  2836. echo '<h3>';
  2837. if (!empty($title_element['supraTitle'])) {
  2838. echo '<small>'.$title_element['supraTitle'].'</small><br />';
  2839. }
  2840. if (!empty($title_element['mainTitle'])) {
  2841. echo $title_element['mainTitle'];
  2842. }
  2843. if (!empty($title_element['subTitle'])) {
  2844. echo '<br /><small>'.$title_element['subTitle'].'</small>';
  2845. }
  2846. echo '</h3>';
  2847. }
  2848. /**
  2849. * Displays options for switching between student view and course manager view.
  2850. *
  2851. * Changes in version 1.2 (Patrick Cool)
  2852. * Student view switch now behaves as a real switch. It maintains its current state until the state
  2853. * is changed explicitly
  2854. *
  2855. * Changes in version 1.1 (Patrick Cool)
  2856. * student view now works correctly in subfolders of the document tool
  2857. * student view works correctly in the new links tool
  2858. *
  2859. * Example code for using this in your tools:
  2860. * //if ($is_courseAdmin && api_get_setting('student_view_enabled') == 'true') {
  2861. * // display_tool_view_option($isStudentView);
  2862. * //}
  2863. * //and in later sections, use api_is_allowed_to_edit()
  2864. *
  2865. * @author Roan Embrechts
  2866. * @author Patrick Cool
  2867. * @author Julio Montoya, changes added in Chamilo
  2868. *
  2869. * @version 1.2
  2870. *
  2871. * @todo rewrite code so it is easier to understand
  2872. */
  2873. function api_display_tool_view_option()
  2874. {
  2875. if (api_get_setting('student_view_enabled') != 'true') {
  2876. return '';
  2877. }
  2878. $sourceurl = '';
  2879. $is_framed = false;
  2880. // Exceptions apply for all multi-frames pages
  2881. if (strpos($_SERVER['REQUEST_URI'], 'chat/chat_banner.php') !== false) {
  2882. // The chat is a multiframe bit that doesn't work too well with the student_view, so do not show the link
  2883. return '';
  2884. }
  2885. // Uncomment to remove student view link from document view page
  2886. if (strpos($_SERVER['REQUEST_URI'], 'lp/lp_header.php') !== false) {
  2887. if (empty($_GET['lp_id'])) {
  2888. return '';
  2889. }
  2890. $sourceurl = substr($_SERVER['REQUEST_URI'], 0, strpos($_SERVER['REQUEST_URI'], '?'));
  2891. $sourceurl = str_replace(
  2892. 'lp/lp_header.php',
  2893. 'lp/lp_controller.php?'.api_get_cidreq().'&action=view&lp_id='.intval($_GET['lp_id']).'&isStudentView='.($_SESSION['studentview'] == 'studentview' ? 'false' : 'true'),
  2894. $sourceurl
  2895. );
  2896. //showinframes doesn't handle student view anyway...
  2897. //return '';
  2898. $is_framed = true;
  2899. }
  2900. // Check whether the $_SERVER['REQUEST_URI'] contains already url parameters (thus a questionmark)
  2901. if (!$is_framed) {
  2902. if (strpos($_SERVER['REQUEST_URI'], '?') === false) {
  2903. $sourceurl = api_get_self().'?'.api_get_cidreq();
  2904. } else {
  2905. $sourceurl = $_SERVER['REQUEST_URI'];
  2906. }
  2907. }
  2908. $output_string = '';
  2909. if (!empty($_SESSION['studentview'])) {
  2910. if ($_SESSION['studentview'] == 'studentview') {
  2911. // We have to remove the isStudentView=true from the $sourceurl
  2912. $sourceurl = str_replace('&isStudentView=true', '', $sourceurl);
  2913. $sourceurl = str_replace('&isStudentView=false', '', $sourceurl);
  2914. $output_string .= '<a class="btn btn-primary btn-sm" href="'.$sourceurl.'&isStudentView=false" target="_self">'.
  2915. Display::returnFontAwesomeIcon('eye').' '.get_lang('SwitchToTeacherView').'</a>';
  2916. } elseif ($_SESSION['studentview'] == 'teacherview') {
  2917. // Switching to teacherview
  2918. $sourceurl = str_replace('&isStudentView=true', '', $sourceurl);
  2919. $sourceurl = str_replace('&isStudentView=false', '', $sourceurl);
  2920. $output_string .= '<a class="btn btn-default btn-sm" href="'.$sourceurl.'&isStudentView=true" target="_self">'.
  2921. Display::returnFontAwesomeIcon('eye').' '.get_lang('SwitchToStudentView').'</a>';
  2922. }
  2923. } else {
  2924. $output_string .= '<a class="btn btn-default btn-sm" href="'.$sourceurl.'&isStudentView=true" target="_self">'.
  2925. Display::returnFontAwesomeIcon('eye').' '.get_lang('SwitchToStudentView').'</a>';
  2926. }
  2927. $output_string = Security::remove_XSS($output_string);
  2928. $html = Display::tag('div', $output_string, ['class' => 'view-options']);
  2929. return $html;
  2930. }
  2931. // TODO: This is for the permission section.
  2932. /**
  2933. * Function that removes the need to directly use is_courseAdmin global in
  2934. * tool scripts. It returns true or false depending on the user's rights in
  2935. * this particular course.
  2936. * Optionally checking for tutor and coach roles here allows us to use the
  2937. * student_view feature altogether with these roles as well.
  2938. *
  2939. * @param bool Whether to check if the user has the tutor role
  2940. * @param bool Whether to check if the user has the coach role
  2941. * @param bool Whether to check if the user has the session coach role
  2942. * @param bool check the student view or not
  2943. *
  2944. * @author Roan Embrechts
  2945. * @author Patrick Cool
  2946. * @author Julio Montoya
  2947. *
  2948. * @version 1.1, February 2004
  2949. *
  2950. * @return bool true: the user has the rights to edit, false: he does not
  2951. */
  2952. function api_is_allowed_to_edit(
  2953. $tutor = false,
  2954. $coach = false,
  2955. $session_coach = false,
  2956. $check_student_view = true
  2957. ) {
  2958. $allowSessionAdminEdit = api_get_configuration_value('session_admins_edit_courses_content') === true;
  2959. // Admins can edit anything.
  2960. if (api_is_platform_admin($allowSessionAdminEdit)) {
  2961. //The student preview was on
  2962. if ($check_student_view && api_is_student_view_active()) {
  2963. return false;
  2964. } else {
  2965. return true;
  2966. }
  2967. }
  2968. $sessionId = api_get_session_id();
  2969. if ($sessionId && api_get_configuration_value('session_courses_read_only_mode')) {
  2970. $efv = new ExtraFieldValue('course');
  2971. $lockExrafieldField = $efv->get_values_by_handler_and_field_variable(
  2972. api_get_course_int_id(),
  2973. 'session_courses_read_only_mode'
  2974. );
  2975. if (!empty($lockExrafieldField['value'])) {
  2976. return false;
  2977. }
  2978. }
  2979. $is_allowed_coach_to_edit = api_is_coach(null, null, $check_student_view);
  2980. $session_visibility = api_get_session_visibility($sessionId);
  2981. $is_courseAdmin = api_is_course_admin();
  2982. if (!$is_courseAdmin && $tutor) {
  2983. // If we also want to check if the user is a tutor...
  2984. $is_courseAdmin = $is_courseAdmin || api_is_course_tutor();
  2985. }
  2986. if (!$is_courseAdmin && $coach) {
  2987. // If we also want to check if the user is a coach...';
  2988. // Check if session visibility is read only for coaches.
  2989. if ($session_visibility == SESSION_VISIBLE_READ_ONLY) {
  2990. $is_allowed_coach_to_edit = false;
  2991. }
  2992. if (api_get_setting('allow_coach_to_edit_course_session') == 'true') {
  2993. // Check if coach is allowed to edit a course.
  2994. $is_courseAdmin = $is_courseAdmin || $is_allowed_coach_to_edit;
  2995. }
  2996. }
  2997. if (!$is_courseAdmin && $session_coach) {
  2998. $is_courseAdmin = $is_courseAdmin || $is_allowed_coach_to_edit;
  2999. }
  3000. // Check if the student_view is enabled, and if so, if it is activated.
  3001. if (api_get_setting('student_view_enabled') == 'true') {
  3002. if (!empty($sessionId)) {
  3003. // Check if session visibility is read only for coaches.
  3004. if ($session_visibility == SESSION_VISIBLE_READ_ONLY) {
  3005. $is_allowed_coach_to_edit = false;
  3006. }
  3007. if (api_get_setting('allow_coach_to_edit_course_session') == 'true') {
  3008. // Check if coach is allowed to edit a course.
  3009. $is_allowed = $is_allowed_coach_to_edit;
  3010. } else {
  3011. $is_allowed = false;
  3012. }
  3013. if ($check_student_view) {
  3014. $is_allowed = $is_allowed && $_SESSION['studentview'] != 'studentview';
  3015. }
  3016. } else {
  3017. if ($check_student_view) {
  3018. $is_allowed = $is_courseAdmin && $_SESSION['studentview'] != 'studentview';
  3019. } else {
  3020. $is_allowed = $is_courseAdmin;
  3021. }
  3022. }
  3023. return $is_allowed;
  3024. } else {
  3025. return $is_courseAdmin;
  3026. }
  3027. }
  3028. /**
  3029. * Returns true if user is a course coach of at least one course in session.
  3030. *
  3031. * @param int $sessionId
  3032. *
  3033. * @return bool
  3034. */
  3035. function api_is_coach_of_course_in_session($sessionId)
  3036. {
  3037. if (api_is_platform_admin()) {
  3038. return true;
  3039. }
  3040. $userId = api_get_user_id();
  3041. $courseList = UserManager::get_courses_list_by_session(
  3042. $userId,
  3043. $sessionId
  3044. );
  3045. // Session visibility.
  3046. $visibility = api_get_session_visibility(
  3047. $sessionId,
  3048. null,
  3049. false
  3050. );
  3051. if ($visibility != SESSION_VISIBLE && !empty($courseList)) {
  3052. // Course Coach session visibility.
  3053. $blockedCourseCount = 0;
  3054. $closedVisibilityList = [
  3055. COURSE_VISIBILITY_CLOSED,
  3056. COURSE_VISIBILITY_HIDDEN,
  3057. ];
  3058. foreach ($courseList as $course) {
  3059. // Checking session visibility
  3060. $sessionCourseVisibility = api_get_session_visibility(
  3061. $sessionId,
  3062. $course['real_id']
  3063. );
  3064. $courseIsVisible = !in_array(
  3065. $course['visibility'],
  3066. $closedVisibilityList
  3067. );
  3068. if ($courseIsVisible === false || $sessionCourseVisibility == SESSION_INVISIBLE) {
  3069. $blockedCourseCount++;
  3070. }
  3071. }
  3072. // If all courses are blocked then no show in the list.
  3073. if ($blockedCourseCount === count($courseList)) {
  3074. $visibility = SESSION_INVISIBLE;
  3075. } else {
  3076. $visibility = SESSION_VISIBLE;
  3077. }
  3078. }
  3079. switch ($visibility) {
  3080. case SESSION_VISIBLE_READ_ONLY:
  3081. case SESSION_VISIBLE:
  3082. case SESSION_AVAILABLE:
  3083. return true;
  3084. break;
  3085. case SESSION_INVISIBLE:
  3086. return false;
  3087. }
  3088. return false;
  3089. }
  3090. /**
  3091. * Checks if a student can edit contents in a session depending
  3092. * on the session visibility.
  3093. *
  3094. * @param bool $tutor Whether to check if the user has the tutor role
  3095. * @param bool $coach Whether to check if the user has the coach role
  3096. *
  3097. * @return bool true: the user has the rights to edit, false: he does not
  3098. */
  3099. function api_is_allowed_to_session_edit($tutor = false, $coach = false)
  3100. {
  3101. if (api_is_allowed_to_edit($tutor, $coach)) {
  3102. // If I'm a teacher, I will return true in order to not affect the normal behaviour of Chamilo tools.
  3103. return true;
  3104. } else {
  3105. $sessionId = api_get_session_id();
  3106. if ($sessionId == 0) {
  3107. // I'm not in a session so i will return true to not affect the normal behaviour of Chamilo tools.
  3108. return true;
  3109. } else {
  3110. // I'm in a session and I'm a student
  3111. // Get the session visibility
  3112. $session_visibility = api_get_session_visibility($sessionId);
  3113. // if 5 the session is still available
  3114. switch ($session_visibility) {
  3115. case SESSION_VISIBLE_READ_ONLY: // 1
  3116. return false;
  3117. case SESSION_VISIBLE: // 2
  3118. return true;
  3119. case SESSION_INVISIBLE: // 3
  3120. return false;
  3121. case SESSION_AVAILABLE: //5
  3122. return true;
  3123. }
  3124. }
  3125. }
  3126. }
  3127. /**
  3128. * Checks whether the user is allowed in a specific tool for a specific action.
  3129. *
  3130. * @param string $tool the tool we are checking if the user has a certain permission
  3131. * @param string $action the action we are checking (add, edit, delete, move, visibility)
  3132. *
  3133. * @return bool
  3134. *
  3135. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
  3136. * @author Julio Montoya
  3137. *
  3138. * @version 1.0
  3139. */
  3140. function api_is_allowed($tool, $action, $task_id = 0)
  3141. {
  3142. $_user = api_get_user_info();
  3143. $_course = api_get_course_info();
  3144. if (api_is_course_admin()) {
  3145. return true;
  3146. }
  3147. if (is_array($_course) and count($_course) > 0) {
  3148. require_once api_get_path(SYS_CODE_PATH).'permissions/permissions_functions.inc.php';
  3149. // Getting the permissions of this user.
  3150. if ($task_id == 0) {
  3151. $user_permissions = get_permissions('user', $_user['user_id']);
  3152. $_SESSION['total_permissions'][$_course['code']] = $user_permissions;
  3153. }
  3154. // Getting the permissions of the task.
  3155. if ($task_id != 0) {
  3156. $task_permissions = get_permissions('task', $task_id);
  3157. /* !!! */$_SESSION['total_permissions'][$_course['code']] = $task_permissions;
  3158. }
  3159. //print_r($_SESSION['total_permissions']);
  3160. // Getting the permissions of the groups of the user
  3161. //$groups_of_user = GroupManager::get_group_ids($_course['db_name'], $_user['user_id']);
  3162. //foreach($groups_of_user as $group)
  3163. // $this_group_permissions = get_permissions('group', $group);
  3164. // Getting the permissions of the courseroles of the user
  3165. $user_courserole_permissions = get_roles_permissions('user', $_user['user_id']);
  3166. // Getting the permissions of the platformroles of the user
  3167. //$user_platformrole_permissions = get_roles_permissions('user', $_user['user_id'], ', platform');
  3168. // Getting the permissions of the roles of the groups of the user
  3169. //foreach($groups_of_user as $group)
  3170. // $this_group_courserole_permissions = get_roles_permissions('group', $group);
  3171. // Getting the permissions of the platformroles of the groups of the user
  3172. //foreach($groups_of_user as $group)
  3173. // $this_group_platformrole_permissions = get_roles_permissions('group', $group, 'platform');
  3174. }
  3175. // If the permissions are limited, we have to map the extended ones to the limited ones.
  3176. if (api_get_setting('permissions') == 'limited') {
  3177. if ($action == 'Visibility') {
  3178. $action = 'Edit';
  3179. }
  3180. if ($action == 'Move') {
  3181. $action = 'Edit';
  3182. }
  3183. }
  3184. // The session that contains all the permissions already exists for this course
  3185. // so there is no need to requery everything.
  3186. //my_print_r($_SESSION['total_permissions'][$_course['code']][$tool]);
  3187. if (is_array($_SESSION['total_permissions'][$_course['code']][$tool])) {
  3188. if (in_array($action, $_SESSION['total_permissions'][$_course['code']][$tool])) {
  3189. return true;
  3190. } else {
  3191. return false;
  3192. }
  3193. }
  3194. }
  3195. /**
  3196. * Tells whether this user is an anonymous user.
  3197. *
  3198. * @param int $user_id User ID (optional, will take session ID if not provided)
  3199. * @param bool $db_check Whether to check in the database (true) or simply in
  3200. * the session (false) to see if the current user is the anonymous user
  3201. *
  3202. * @return bool true if this user is anonymous, false otherwise
  3203. */
  3204. function api_is_anonymous($user_id = null, $db_check = false)
  3205. {
  3206. if (!isset($user_id)) {
  3207. $user_id = api_get_user_id();
  3208. }
  3209. if ($db_check) {
  3210. $info = api_get_user_info($user_id);
  3211. if ($info['status'] == ANONYMOUS) {
  3212. return true;
  3213. }
  3214. }
  3215. $_user = api_get_user_info();
  3216. if (isset($_user['status']) && $_user['status'] == ANONYMOUS) {
  3217. //if ($_user['user_id'] == 0) {
  3218. // In some cases, api_set_anonymous doesn't seem to be triggered in local.inc.php. Make sure it is.
  3219. // Occurs in agenda for admin links - YW
  3220. global $use_anonymous;
  3221. if (isset($use_anonymous) && $use_anonymous) {
  3222. api_set_anonymous();
  3223. }
  3224. return true;
  3225. }
  3226. return (isset($_user['is_anonymous']) && $_user['is_anonymous'] === true) || $_user === false;
  3227. }
  3228. /**
  3229. * Displays message "You are not allowed here..." and exits the entire script.
  3230. *
  3231. * @param bool $print_headers Whether or not to print headers (default = false -> does not print them)
  3232. * @param string $message
  3233. * @param int $responseCode
  3234. */
  3235. function api_not_allowed(
  3236. $print_headers = false,
  3237. $message = null,
  3238. $responseCode = 0
  3239. ) {
  3240. if (api_get_setting('sso_authentication') === 'true') {
  3241. global $osso;
  3242. if ($osso) {
  3243. $osso->logout();
  3244. }
  3245. }
  3246. $home_url = api_get_path(WEB_PATH);
  3247. $user_id = api_get_user_id();
  3248. $course = api_get_course_id();
  3249. global $this_section;
  3250. if (CustomPages::enabled() && !isset($user_id)) {
  3251. if (empty($user_id)) {
  3252. // Why the CustomPages::enabled() need to be to set the request_uri
  3253. $_SESSION['request_uri'] = $_SERVER['REQUEST_URI'];
  3254. }
  3255. CustomPages::display(CustomPages::INDEX_UNLOGGED);
  3256. }
  3257. $origin = api_get_origin();
  3258. $msg = null;
  3259. if (isset($message)) {
  3260. $msg = $message;
  3261. } else {
  3262. $msg = Display::return_message(
  3263. get_lang('NotAllowedClickBack').'
  3264. <script>function goBack(){window.history.back();}</script>',
  3265. 'error',
  3266. false
  3267. );
  3268. $msg .= '<p class="text-center">
  3269. <a onclick="goBack();" class="btn btn-default" href="'.$home_url.'">'.get_lang('GoBack').'</a>
  3270. </p>';
  3271. }
  3272. $msg = Display::div($msg, ['align' => 'center']);
  3273. $show_headers = 0;
  3274. if ($print_headers && $origin != 'learnpath') {
  3275. $show_headers = 1;
  3276. }
  3277. $tpl = new Template(null, $show_headers, $show_headers, false, true, false, true, $responseCode);
  3278. $tpl->assign('hide_login_link', 1);
  3279. $tpl->assign('content', $msg);
  3280. if (($user_id != 0 && !api_is_anonymous()) &&
  3281. (!isset($course) || $course == -1) &&
  3282. empty($_GET['cidReq'])
  3283. ) {
  3284. // if the access is not authorized and there is some login information
  3285. // but the cidReq is not found, assume we are missing course data and send the user
  3286. // to the user_portal
  3287. $tpl->display_one_col_template();
  3288. exit;
  3289. }
  3290. if (!empty($_SERVER['REQUEST_URI']) &&
  3291. (
  3292. !empty($_GET['cidReq']) ||
  3293. $this_section == SECTION_MYPROFILE ||
  3294. $this_section == SECTION_PLATFORM_ADMIN
  3295. )
  3296. ) {
  3297. $courseCode = api_get_course_id();
  3298. // Only display form and return to the previous URL if there was a course ID included
  3299. if ($user_id != 0 && !api_is_anonymous()) {
  3300. //if there is a user ID, then the user is not allowed but the session is still there. Say so and exit
  3301. $tpl->assign('content', $msg);
  3302. $tpl->display_one_col_template();
  3303. exit;
  3304. }
  3305. if (!is_null($courseCode)) {
  3306. api_set_firstpage_parameter($courseCode);
  3307. }
  3308. // If the user has no user ID, then his session has expired
  3309. $form = api_get_not_allowed_login_form();
  3310. // see same text in auth/gotocourse.php and main_api.lib.php function api_not_allowed (above)
  3311. $content = Display::return_message(get_lang('NotAllowed'), 'error', false);
  3312. if (!empty($courseCode)) {
  3313. $content .= '<h4>'.get_lang('LoginToGoToThisCourse').'</h4>';
  3314. }
  3315. if (api_is_cas_activated()) {
  3316. $content .= Display::return_message(sprintf(get_lang('YouHaveAnInstitutionalAccount'), api_get_setting("Institution")), '', false);
  3317. $content .= Display::div(
  3318. "<br/><a href='".get_cas_direct_URL(api_get_course_id())."'>".sprintf(get_lang('LoginWithYourAccount'), api_get_setting("Institution"))."</a><br/><br/>",
  3319. ['align' => 'center']
  3320. );
  3321. $content .= Display::return_message(get_lang('YouDontHaveAnInstitutionAccount'));
  3322. $content .= "<p style='text-align:center'><a href='#' onclick='$(this).parent().next().toggle()'>".get_lang('LoginWithExternalAccount')."</a></p>";
  3323. $content .= "<div style='display:none;'>";
  3324. }
  3325. $content .= '<div class="well">';
  3326. $content .= $form->returnForm();
  3327. $content .= '</div>';
  3328. if (api_is_cas_activated()) {
  3329. $content .= "</div>";
  3330. }
  3331. if (!empty($courseCode)) {
  3332. $content .= '<hr/><p style="text-align:center"><a href="'.$home_url.'">'.
  3333. get_lang('ReturnToCourseHomepage').'</a></p>';
  3334. } else {
  3335. $content .= '<hr/><p style="text-align:center"><a href="'.$home_url.'">'.
  3336. get_lang('BackHome').'</a></p>';
  3337. }
  3338. $tpl->setLoginBodyClass();
  3339. $tpl->assign('content', $content);
  3340. $tpl->display_one_col_template();
  3341. exit;
  3342. }
  3343. if ($user_id != 0 && !api_is_anonymous()) {
  3344. $tpl->display_one_col_template();
  3345. exit;
  3346. }
  3347. $msg = null;
  3348. // The session is over and we were not in a course,
  3349. // or we try to get directly to a private course without being logged
  3350. $courseId = api_get_course_int_id();
  3351. if (!empty($courseId)) {
  3352. api_set_firstpage_parameter(api_get_course_id());
  3353. $tpl->setLoginBodyClass();
  3354. // see same text in auth/gotocourse.php and main_api.lib.php function api_not_allowed (bellow)
  3355. $msg = Display::return_message(get_lang('NotAllowed'), 'error', false);
  3356. $msg .= '<h4>'.get_lang('LoginToGoToThisCourse').'</h4>';
  3357. $casEnabled = api_is_cas_activated();
  3358. if ($casEnabled) {
  3359. $msg .= Display::return_message(
  3360. sprintf(get_lang('YouHaveAnInstitutionalAccount'), api_get_setting("Institution")),
  3361. '',
  3362. false
  3363. );
  3364. $msg .= Display::div("<br/><a href='".get_cas_direct_URL(api_get_course_int_id())."'>".getCASLogoHTML()." ".sprintf(get_lang('LoginWithYourAccount'), api_get_setting("Institution"))."</a><br/><br/>", ['align' => 'center']);
  3365. $msg .= Display::return_message(get_lang('YouDontHaveAnInstitutionAccount'));
  3366. $msg .= "<p style='text-align:center'><a href='#' onclick='$(this).parent().next().toggle()'>".get_lang('LoginWithExternalAccount')."</a></p>";
  3367. $msg .= "<div style='display:none;'>";
  3368. }
  3369. $form = api_get_not_allowed_login_form();
  3370. $msg .= '<div class="well">';
  3371. $msg .= $form->returnForm();
  3372. $msg .= '</div>';
  3373. if ($casEnabled) {
  3374. $msg .= "</div>";
  3375. }
  3376. } else {
  3377. // we were not in a course, return to home page
  3378. $msg = Display::return_message(
  3379. get_lang('NotAllowed'),
  3380. 'error',
  3381. false
  3382. );
  3383. $msg .= '<p class="text-center">
  3384. <a class="btn btn-default" href="'.$home_url.'">'.get_lang('BackHome').'</a>
  3385. </p>';
  3386. if (!empty($message)) {
  3387. $msg = $message;
  3388. }
  3389. if (api_is_anonymous()) {
  3390. $form = api_get_not_allowed_login_form();
  3391. $msg .= '<div class="well">';
  3392. $msg .= $form->returnForm();
  3393. $msg .= '</div>';
  3394. }
  3395. }
  3396. $tpl->assign('content', $msg);
  3397. $tpl->display_one_col_template();
  3398. exit;
  3399. }
  3400. /**
  3401. * @return FormValidator
  3402. */
  3403. function api_get_not_allowed_login_form()
  3404. {
  3405. $action = api_get_self().'?'.Security::remove_XSS($_SERVER['QUERY_STRING']);
  3406. $action = str_replace('&amp;', '&', $action);
  3407. Session::write('redirect_after_not_allow_page', $action);
  3408. $action .= '&redirect_after_not_allow_page=1';
  3409. $form = new FormValidator(
  3410. 'formLogin',
  3411. 'post',
  3412. $action,
  3413. null,
  3414. ['class' => 'form-stacked']
  3415. );
  3416. $params = [
  3417. 'placeholder' => get_lang('UserName'),
  3418. 'class' => 'col-md-3',
  3419. ];
  3420. if (api_browser_support('autocapitalize')) {
  3421. $params['autocapitalize'] = 'none';
  3422. }
  3423. $form->addElement(
  3424. 'text',
  3425. 'login',
  3426. null,
  3427. $params
  3428. );
  3429. $form->addElement(
  3430. 'password',
  3431. 'password',
  3432. null,
  3433. ['placeholder' => get_lang('Password'), 'class' => 'col-md-3']
  3434. ); //new
  3435. $form->addButtonNext(get_lang('LoginEnter'), 'submitAuth');
  3436. return $form;
  3437. }
  3438. /**
  3439. * Gets a UNIX timestamp from a database (MySQL) datetime format string.
  3440. *
  3441. * @param $last_post_datetime standard output date in a sql query
  3442. *
  3443. * @return int timestamp
  3444. *
  3445. * @author Toon Van Hoecke <Toon.VanHoecke@UGent.be>
  3446. *
  3447. * @version October 2003
  3448. * @desc convert sql date to unix timestamp
  3449. */
  3450. function convert_sql_date($last_post_datetime)
  3451. {
  3452. list($last_post_date, $last_post_time) = explode(' ', $last_post_datetime);
  3453. list($year, $month, $day) = explode('-', $last_post_date);
  3454. list($hour, $min, $sec) = explode(':', $last_post_time);
  3455. return mktime((int) $hour, (int) $min, (int) $sec, (int) $month, (int) $day, (int) $year);
  3456. }
  3457. /**
  3458. * Gets item visibility from the item_property table.
  3459. *
  3460. * Getting the visibility is done by getting the last updated visibility entry,
  3461. * using the largest session ID found if session 0 and another was found (meaning
  3462. * the only one that is actually from the session, in case there are results from
  3463. * session 0 *AND* session n).
  3464. *
  3465. * @param array $_course Course properties array (result of api_get_course_info())
  3466. * @param string $tool Tool (learnpath, document, etc)
  3467. * @param int $id The item ID in the given tool
  3468. * @param int $session The session ID (optional)
  3469. * @param int $user_id
  3470. * @param string $type
  3471. * @param string $group_id
  3472. *
  3473. * @return int -1 on error, 0 if invisible, 1 if visible
  3474. */
  3475. function api_get_item_visibility(
  3476. $_course,
  3477. $tool,
  3478. $id,
  3479. $session = 0,
  3480. $user_id = null,
  3481. $type = null,
  3482. $group_id = null
  3483. ) {
  3484. if (!is_array($_course) || count($_course) == 0 || empty($tool) || empty($id)) {
  3485. return -1;
  3486. }
  3487. $tool = Database::escape_string($tool);
  3488. $id = (int) $id;
  3489. $session = (int) $session;
  3490. $TABLE_ITEMPROPERTY = Database::get_course_table(TABLE_ITEM_PROPERTY);
  3491. $course_id = (int) $_course['real_id'];
  3492. $userCondition = '';
  3493. if (!empty($user_id)) {
  3494. $user_id = (int) $user_id;
  3495. $userCondition = " AND to_user_id = $user_id ";
  3496. }
  3497. $typeCondition = '';
  3498. if (!empty($type)) {
  3499. $type = Database::escape_string($type);
  3500. $typeCondition = " AND lastedit_type = '$type' ";
  3501. }
  3502. $groupCondition = '';
  3503. if (!empty($group_id)) {
  3504. $group_id = (int) $group_id;
  3505. $groupCondition = " AND to_group_id = '$group_id' ";
  3506. }
  3507. $sql = "SELECT visibility
  3508. FROM $TABLE_ITEMPROPERTY
  3509. WHERE
  3510. c_id = $course_id AND
  3511. tool = '$tool' AND
  3512. ref = $id AND
  3513. (session_id = $session OR session_id = 0 OR session_id IS NULL)
  3514. $userCondition $typeCondition $groupCondition
  3515. ORDER BY session_id DESC, lastedit_date DESC
  3516. LIMIT 1";
  3517. $res = Database::query($sql);
  3518. if ($res === false || Database::num_rows($res) == 0) {
  3519. return -1;
  3520. }
  3521. $row = Database::fetch_array($res);
  3522. return (int) $row['visibility'];
  3523. }
  3524. /**
  3525. * Delete a row in the c_item_property table.
  3526. *
  3527. * @param array $courseInfo
  3528. * @param string $tool
  3529. * @param int $itemId
  3530. * @param int $userId
  3531. * @param int $groupId group.iid
  3532. * @param int $sessionId
  3533. *
  3534. * @return false|null
  3535. */
  3536. function api_item_property_delete(
  3537. $courseInfo,
  3538. $tool,
  3539. $itemId,
  3540. $userId,
  3541. $groupId = 0,
  3542. $sessionId = 0
  3543. ) {
  3544. if (empty($courseInfo)) {
  3545. return false;
  3546. }
  3547. $courseId = (int) $courseInfo['real_id'];
  3548. if (empty($courseId) || empty($tool) || empty($itemId)) {
  3549. return false;
  3550. }
  3551. $table = Database::get_course_table(TABLE_ITEM_PROPERTY);
  3552. $tool = Database::escape_string($tool);
  3553. $itemId = intval($itemId);
  3554. $userId = intval($userId);
  3555. $groupId = intval($groupId);
  3556. $sessionId = intval($sessionId);
  3557. $groupCondition = " AND to_group_id = $groupId ";
  3558. if (empty($groupId)) {
  3559. $groupCondition = " AND (to_group_id is NULL OR to_group_id = 0) ";
  3560. }
  3561. $userCondition = " AND to_user_id = $userId ";
  3562. if (empty($userId)) {
  3563. $userCondition = " AND (to_user_id is NULL OR to_user_id = 0) ";
  3564. }
  3565. $sessionCondition = api_get_session_condition($sessionId, true, false, 'session_id');
  3566. $sql = "DELETE FROM $table
  3567. WHERE
  3568. c_id = $courseId AND
  3569. tool = '$tool' AND
  3570. ref = $itemId
  3571. $sessionCondition
  3572. $userCondition
  3573. $groupCondition
  3574. ";
  3575. Database::query($sql);
  3576. }
  3577. /**
  3578. * Updates or adds item properties to the Item_propetry table
  3579. * Tool and lastedit_type are language independant strings (langvars->get_lang!).
  3580. *
  3581. * @param array $_course array with course properties
  3582. * @param string $tool tool id, linked to 'rubrique' of the course tool_list (Warning: language sensitive !!)
  3583. * @param int $item_id id of the item itself, linked to key of every tool ('id', ...)
  3584. * @param string $last_edit_type add or update action
  3585. * (1) message to be translated (in trad4all) : e.g. DocumentAdded, DocumentUpdated;
  3586. * (2) "delete"
  3587. * (3) "visible"
  3588. * (4) "invisible"
  3589. * @param int $user_id id of the editing/adding user
  3590. * @param array $groupInfo must include group.iid/group.od
  3591. * @param int $to_user_id id of the intended user (always has priority over $to_group_id !), only relevant for $type (1)
  3592. * @param string $start_visible 0000-00-00 00:00:00 format
  3593. * @param string $end_visible 0000-00-00 00:00:00 format
  3594. * @param int $session_id The session ID, if any, otherwise will default to 0
  3595. *
  3596. * @return bool false if update fails
  3597. *
  3598. * @author Toon Van Hoecke <Toon.VanHoecke@UGent.be>, Ghent University
  3599. *
  3600. * @version January 2005
  3601. * @desc update the item_properties table (if entry not exists, insert) of the course
  3602. */
  3603. function api_item_property_update(
  3604. $_course,
  3605. $tool,
  3606. $item_id,
  3607. $last_edit_type,
  3608. $user_id,
  3609. $groupInfo = [],
  3610. $to_user_id = null,
  3611. $start_visible = '',
  3612. $end_visible = '',
  3613. $session_id = 0
  3614. ) {
  3615. if (empty($_course)) {
  3616. return false;
  3617. }
  3618. $course_id = $_course['real_id'];
  3619. if (empty($course_id)) {
  3620. return false;
  3621. }
  3622. $to_group_id = 0;
  3623. if (!empty($groupInfo) && isset($groupInfo['iid'])) {
  3624. $to_group_id = (int) $groupInfo['iid'];
  3625. }
  3626. $em = Database::getManager();
  3627. // Definition of variables.
  3628. $tool = Database::escape_string($tool);
  3629. $item_id = (int) $item_id;
  3630. $lastEditTypeNoFilter = $last_edit_type;
  3631. $last_edit_type = Database::escape_string($last_edit_type);
  3632. $user_id = (int) $user_id;
  3633. $startVisible = "NULL";
  3634. if (!empty($start_visible)) {
  3635. $start_visible = Database::escape_string($start_visible);
  3636. $startVisible = "'$start_visible'";
  3637. }
  3638. $endVisible = "NULL";
  3639. if (!empty($end_visible)) {
  3640. $end_visible = Database::escape_string($end_visible);
  3641. $endVisible = "'$end_visible'";
  3642. }
  3643. $to_filter = '';
  3644. $time = api_get_utc_datetime();
  3645. if (!empty($session_id)) {
  3646. $session_id = (int) $session_id;
  3647. } else {
  3648. $session_id = api_get_session_id();
  3649. }
  3650. // Definition of tables.
  3651. $tableItemProperty = Database::get_course_table(TABLE_ITEM_PROPERTY);
  3652. if ($to_user_id <= 0) {
  3653. $to_user_id = null; // No to_user_id set
  3654. }
  3655. if (!is_null($to_user_id)) {
  3656. // $to_user_id has more priority than $to_group_id
  3657. $to_user_id = (int) $to_user_id;
  3658. $to_field = 'to_user_id';
  3659. $to_value = $to_user_id;
  3660. } else {
  3661. // $to_user_id is not set.
  3662. $to_field = 'to_group_id';
  3663. $to_value = $to_group_id;
  3664. }
  3665. $toValueCondition = empty($to_value) ? 'NULL' : "'$to_value'";
  3666. // Set filters for $to_user_id and $to_group_id, with priority for $to_user_id
  3667. $condition_session = " AND session_id = $session_id ";
  3668. if (empty($session_id)) {
  3669. $condition_session = ' AND (session_id = 0 OR session_id IS NULL) ';
  3670. }
  3671. $filter = " c_id = $course_id AND tool = '$tool' AND ref = $item_id $condition_session ";
  3672. // Check whether $to_user_id and $to_group_id are passed in the function call.
  3673. // If both are not passed (both are null) then it is a message for everybody and $to_group_id should be 0 !
  3674. if (is_null($to_user_id) && is_null($to_group_id)) {
  3675. $to_group_id = 0;
  3676. }
  3677. if (!is_null($to_user_id)) {
  3678. // Set filter to intended user.
  3679. $to_filter = " AND to_user_id = $to_user_id $condition_session";
  3680. } else {
  3681. // Set filter to intended group.
  3682. if (($to_group_id != 0) && $to_group_id == strval(intval($to_group_id))) {
  3683. $to_filter = " AND to_group_id = $to_group_id $condition_session";
  3684. }
  3685. }
  3686. // Adding filter if set.
  3687. $filter .= $to_filter;
  3688. // Update if possible
  3689. $set_type = '';
  3690. switch ($lastEditTypeNoFilter) {
  3691. case 'delete':
  3692. // delete = make item only visible for the platform admin.
  3693. $visibility = '2';
  3694. if (!empty($session_id)) {
  3695. // Check whether session id already exist into item_properties for updating visibility or add it.
  3696. $sql = "SELECT session_id FROM $tableItemProperty
  3697. WHERE
  3698. c_id = $course_id AND
  3699. tool = '$tool' AND
  3700. ref = $item_id AND
  3701. session_id = $session_id";
  3702. $rs = Database::query($sql);
  3703. if (Database::num_rows($rs) > 0) {
  3704. $sql = "UPDATE $tableItemProperty
  3705. SET lastedit_type = '".str_replace('_', '', ucwords($tool))."Deleted',
  3706. lastedit_date = '$time',
  3707. lastedit_user_id = $user_id,
  3708. visibility = $visibility,
  3709. session_id = $session_id $set_type
  3710. WHERE $filter";
  3711. $result = Database::query($sql);
  3712. } else {
  3713. $sql = "INSERT INTO $tableItemProperty (c_id, tool, ref, insert_date, insert_user_id, lastedit_date, lastedit_type, lastedit_user_id, $to_field, visibility, start_visible, end_visible, session_id)
  3714. VALUES ($course_id, '$tool',$item_id, '$time', $user_id, '$time', '$last_edit_type',$user_id, $toValueCondition, $visibility, $startVisible, $endVisible, $session_id)";
  3715. $result = Database::query($sql);
  3716. $id = Database::insert_id();
  3717. if ($id) {
  3718. $sql = "UPDATE $tableItemProperty SET id = iid WHERE iid = $id";
  3719. Database::query($sql);
  3720. }
  3721. }
  3722. } else {
  3723. $sql = "UPDATE $tableItemProperty
  3724. SET
  3725. lastedit_type='".str_replace('_', '', ucwords($tool))."Deleted',
  3726. lastedit_date='$time',
  3727. lastedit_user_id = $user_id,
  3728. visibility = $visibility $set_type
  3729. WHERE $filter";
  3730. $result = Database::query($sql);
  3731. }
  3732. break;
  3733. case 'visible': // Change item to visible.
  3734. $visibility = '1';
  3735. if (!empty($session_id)) {
  3736. // Check whether session id already exist into item_properties for updating visibility or add it.
  3737. $sql = "SELECT session_id FROM $tableItemProperty
  3738. WHERE
  3739. c_id = $course_id AND
  3740. tool = '$tool' AND
  3741. ref = $item_id AND
  3742. session_id = $session_id";
  3743. $rs = Database::query($sql);
  3744. if (Database::num_rows($rs) > 0) {
  3745. $sql = "UPDATE $tableItemProperty
  3746. SET
  3747. lastedit_type='".str_replace('_', '', ucwords($tool))."Visible',
  3748. lastedit_date='$time',
  3749. lastedit_user_id = $user_id,
  3750. visibility = $visibility,
  3751. session_id = $session_id $set_type
  3752. WHERE $filter";
  3753. $result = Database::query($sql);
  3754. } else {
  3755. $sql = "INSERT INTO $tableItemProperty (c_id, tool, ref, insert_date, insert_user_id, lastedit_date, lastedit_type, lastedit_user_id, $to_field, visibility, start_visible, end_visible, session_id)
  3756. VALUES ($course_id, '$tool', $item_id, '$time', $user_id, '$time', '$last_edit_type', $user_id, $toValueCondition, $visibility, $startVisible, $endVisible, $session_id)";
  3757. $result = Database::query($sql);
  3758. $id = Database::insert_id();
  3759. if ($id) {
  3760. $sql = "UPDATE $tableItemProperty SET id = iid WHERE iid = $id";
  3761. Database::query($sql);
  3762. }
  3763. }
  3764. } else {
  3765. $sql = "UPDATE $tableItemProperty
  3766. SET
  3767. lastedit_type='".str_replace('_', '', ucwords($tool))."Visible',
  3768. lastedit_date='$time',
  3769. lastedit_user_id = $user_id,
  3770. visibility = $visibility $set_type
  3771. WHERE $filter";
  3772. $result = Database::query($sql);
  3773. }
  3774. break;
  3775. case 'invisible': // Change item to invisible.
  3776. $visibility = '0';
  3777. if (!empty($session_id)) {
  3778. // Check whether session id already exist into item_properties for updating visibility or add it
  3779. $sql = "SELECT session_id FROM $tableItemProperty
  3780. WHERE
  3781. c_id = $course_id AND
  3782. tool = '$tool' AND
  3783. ref = $item_id AND
  3784. session_id = $session_id";
  3785. $rs = Database::query($sql);
  3786. if (Database::num_rows($rs) > 0) {
  3787. $sql = "UPDATE $tableItemProperty
  3788. SET
  3789. lastedit_type = '".str_replace('_', '', ucwords($tool))."Invisible',
  3790. lastedit_date = '$time',
  3791. lastedit_user_id = $user_id,
  3792. visibility = $visibility,
  3793. session_id = $session_id $set_type
  3794. WHERE $filter";
  3795. $result = Database::query($sql);
  3796. } else {
  3797. $sql = "INSERT INTO $tableItemProperty (c_id, tool, ref, insert_date, insert_user_id, lastedit_date, lastedit_type, lastedit_user_id,$to_field, visibility, start_visible, end_visible, session_id)
  3798. VALUES ($course_id, '$tool', $item_id, '$time', $user_id, '$time', '$last_edit_type', $user_id, $toValueCondition, $visibility, $startVisible, $endVisible, $session_id)";
  3799. $result = Database::query($sql);
  3800. $id = Database::insert_id();
  3801. if ($id) {
  3802. $sql = "UPDATE $tableItemProperty SET id = iid WHERE iid = $id";
  3803. Database::query($sql);
  3804. }
  3805. }
  3806. } else {
  3807. $sql = "UPDATE $tableItemProperty
  3808. SET
  3809. lastedit_type = '".str_replace('_', '', ucwords($tool))."Invisible',
  3810. lastedit_date = '$time',
  3811. lastedit_user_id = $user_id,
  3812. visibility = $visibility $set_type
  3813. WHERE $filter";
  3814. $result = Database::query($sql);
  3815. }
  3816. break;
  3817. default: // The item will be added or updated.
  3818. $set_type = ", lastedit_type = '$last_edit_type' ";
  3819. $visibility = '1';
  3820. //$filter .= $to_filter; already added
  3821. $sql = "UPDATE $tableItemProperty
  3822. SET
  3823. lastedit_date = '$time',
  3824. lastedit_user_id = $user_id $set_type
  3825. WHERE $filter";
  3826. $result = Database::query($sql);
  3827. }
  3828. // Insert if no entries are found (can only happen in case of $last_edit_type switch is 'default').
  3829. if ($result == false || Database::affected_rows($result) == 0) {
  3830. $objCourse = $em->find('ChamiloCoreBundle:Course', intval($course_id));
  3831. $objTime = new DateTime('now', new DateTimeZone('UTC'));
  3832. $objUser = api_get_user_entity($user_id);
  3833. if (empty($objUser)) {
  3834. // Use anonymous
  3835. $user_id = api_get_anonymous_id();
  3836. $objUser = api_get_user_entity($user_id);
  3837. }
  3838. $objGroup = null;
  3839. if (!empty($to_group_id)) {
  3840. $objGroup = $em->find('ChamiloCourseBundle:CGroupInfo', $to_group_id);
  3841. }
  3842. $objToUser = api_get_user_entity($to_user_id);
  3843. $objSession = $em->find('ChamiloCoreBundle:Session', intval($session_id));
  3844. $startVisibleDate = !empty($start_visible) ? new DateTime($start_visible, new DateTimeZone('UTC')) : null;
  3845. $endVisibleDate = !empty($endVisibleDate) ? new DateTime($endVisibleDate, new DateTimeZone('UTC')) : null;
  3846. $cItemProperty = new CItemProperty($objCourse);
  3847. $cItemProperty
  3848. ->setTool($tool)
  3849. ->setRef($item_id)
  3850. ->setInsertDate($objTime)
  3851. ->setInsertUser($objUser)
  3852. ->setLasteditDate($objTime)
  3853. ->setLasteditType($last_edit_type)
  3854. ->setGroup($objGroup)
  3855. ->setToUser($objToUser)
  3856. ->setVisibility($visibility)
  3857. ->setStartVisible($startVisibleDate)
  3858. ->setEndVisible($endVisibleDate)
  3859. ->setSession($objSession);
  3860. $em->persist($cItemProperty);
  3861. $em->flush();
  3862. $id = $cItemProperty->getIid();
  3863. if ($id) {
  3864. $cItemProperty->setId($id);
  3865. $em->merge($cItemProperty);
  3866. $em->flush();
  3867. return false;
  3868. }
  3869. }
  3870. return true;
  3871. }
  3872. /**
  3873. * Gets item property by tool.
  3874. *
  3875. * @param string course code
  3876. * @param string tool name, linked to 'rubrique' of the course tool_list (Warning: language sensitive !!)
  3877. * @param int id of the item itself, linked to key of every tool ('id', ...), "*" = all items of the tool
  3878. * @param int $session_id
  3879. * @param string $tool
  3880. * @param string $course_code
  3881. *
  3882. * @return array All fields from c_item_property (all rows found) or empty array
  3883. */
  3884. function api_get_item_property_by_tool($tool, $course_code, $session_id = null)
  3885. {
  3886. $course_info = api_get_course_info($course_code);
  3887. $tool = Database::escape_string($tool);
  3888. // Definition of tables.
  3889. $item_property_table = Database::get_course_table(TABLE_ITEM_PROPERTY);
  3890. $session_id = (int) $session_id;
  3891. $session_condition = ' AND session_id = '.$session_id;
  3892. if (empty($session_id)) {
  3893. $session_condition = " AND (session_id = 0 OR session_id IS NULL) ";
  3894. }
  3895. $course_id = $course_info['real_id'];
  3896. $sql = "SELECT * FROM $item_property_table
  3897. WHERE
  3898. c_id = $course_id AND
  3899. tool = '$tool'
  3900. $session_condition ";
  3901. $rs = Database::query($sql);
  3902. $list = [];
  3903. if (Database::num_rows($rs) > 0) {
  3904. while ($row = Database::fetch_array($rs, 'ASSOC')) {
  3905. $list[] = $row;
  3906. }
  3907. }
  3908. return $list;
  3909. }
  3910. /**
  3911. * Gets item property by tool and user.
  3912. *
  3913. * @param int $userId
  3914. * @param int $tool
  3915. * @param int $courseId
  3916. * @param int $session_id
  3917. *
  3918. * @return array
  3919. */
  3920. function api_get_item_property_list_by_tool_by_user(
  3921. $userId,
  3922. $tool,
  3923. $courseId,
  3924. $session_id = 0
  3925. ) {
  3926. $userId = intval($userId);
  3927. $tool = Database::escape_string($tool);
  3928. $session_id = intval($session_id);
  3929. $courseId = intval($courseId);
  3930. // Definition of tables.
  3931. $item_property_table = Database::get_course_table(TABLE_ITEM_PROPERTY);
  3932. $session_condition = ' AND session_id = '.$session_id;
  3933. if (empty($session_id)) {
  3934. $session_condition = " AND (session_id = 0 OR session_id IS NULL) ";
  3935. }
  3936. $sql = "SELECT * FROM $item_property_table
  3937. WHERE
  3938. insert_user_id = $userId AND
  3939. c_id = $courseId AND
  3940. tool = '$tool'
  3941. $session_condition ";
  3942. $rs = Database::query($sql);
  3943. $list = [];
  3944. if (Database::num_rows($rs) > 0) {
  3945. while ($row = Database::fetch_array($rs, 'ASSOC')) {
  3946. $list[] = $row;
  3947. }
  3948. }
  3949. return $list;
  3950. }
  3951. /**
  3952. * Gets item property id from tool of a course.
  3953. *
  3954. * @param string $course_code course code
  3955. * @param string $tool tool name, linked to 'rubrique' of the course tool_list (Warning: language sensitive !!)
  3956. * @param int $ref id of the item itself, linked to key of every tool ('id', ...), "*" = all items of the tool
  3957. * @param int $sessionId Session ID (optional)
  3958. *
  3959. * @return int
  3960. */
  3961. function api_get_item_property_id($course_code, $tool, $ref, $sessionId = 0)
  3962. {
  3963. $course_info = api_get_course_info($course_code);
  3964. $tool = Database::escape_string($tool);
  3965. $ref = (int) $ref;
  3966. // Definition of tables.
  3967. $tableItemProperty = Database::get_course_table(TABLE_ITEM_PROPERTY);
  3968. $course_id = $course_info['real_id'];
  3969. $sessionId = (int) $sessionId;
  3970. $sessionCondition = " AND session_id = $sessionId ";
  3971. if (empty($sessionId)) {
  3972. $sessionCondition = ' AND (session_id = 0 OR session_id IS NULL) ';
  3973. }
  3974. $sql = "SELECT id FROM $tableItemProperty
  3975. WHERE
  3976. c_id = $course_id AND
  3977. tool = '$tool' AND
  3978. ref = $ref
  3979. $sessionCondition";
  3980. $rs = Database::query($sql);
  3981. $item_property_id = '';
  3982. if (Database::num_rows($rs) > 0) {
  3983. $row = Database::fetch_array($rs);
  3984. $item_property_id = $row['id'];
  3985. }
  3986. return $item_property_id;
  3987. }
  3988. /**
  3989. * Inserts a record in the track_e_item_property table (No update).
  3990. *
  3991. * @param string $tool
  3992. * @param int $ref
  3993. * @param string $title
  3994. * @param string $content
  3995. * @param int $progress
  3996. *
  3997. * @return bool|int
  3998. */
  3999. function api_track_item_property_update($tool, $ref, $title, $content, $progress)
  4000. {
  4001. $tbl_stats_item_property = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ITEM_PROPERTY);
  4002. $course_id = api_get_course_int_id(); //numeric
  4003. $course_code = api_get_course_id(); //alphanumeric
  4004. $item_property_id = api_get_item_property_id($course_code, $tool, $ref);
  4005. if (!empty($item_property_id)) {
  4006. $sql = "INSERT IGNORE INTO $tbl_stats_item_property SET
  4007. course_id = '$course_id',
  4008. item_property_id = '$item_property_id',
  4009. title = '".Database::escape_string($title)."',
  4010. content = '".Database::escape_string($content)."',
  4011. progress = '".intval($progress)."',
  4012. lastedit_date = '".api_get_utc_datetime()."',
  4013. lastedit_user_id = '".api_get_user_id()."',
  4014. session_id = '".api_get_session_id()."'";
  4015. $result = Database::query($sql);
  4016. $affected_rows = Database::affected_rows($result);
  4017. return $affected_rows;
  4018. }
  4019. return false;
  4020. }
  4021. /**
  4022. * @param string $tool
  4023. * @param int $ref
  4024. *
  4025. * @return array|resource
  4026. */
  4027. function api_get_track_item_property_history($tool, $ref)
  4028. {
  4029. $tbl_stats_item_property = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ITEM_PROPERTY);
  4030. $course_id = api_get_course_int_id(); //numeric
  4031. $course_code = api_get_course_id(); //alphanumeric
  4032. $item_property_id = api_get_item_property_id($course_code, $tool, $ref);
  4033. $sql = "SELECT * FROM $tbl_stats_item_property
  4034. WHERE item_property_id = $item_property_id AND course_id = $course_id
  4035. ORDER BY lastedit_date DESC";
  4036. $result = Database::query($sql);
  4037. if ($result === false or $result === null) {
  4038. $result = [];
  4039. } else {
  4040. $result = Database::store_result($result, 'ASSOC');
  4041. }
  4042. return $result;
  4043. }
  4044. /**
  4045. * Gets item property data from tool of a course id.
  4046. *
  4047. * @param int $course_id
  4048. * @param string $tool tool name, linked to 'rubrique' of the course tool_list (Warning: language sensitive !!)
  4049. * @param int $ref id of the item itself, linked to key of every tool ('id', ...), "*" = all items of the tool
  4050. * @param int $session_id
  4051. * @param int $groupId
  4052. *
  4053. * @return array with all fields from c_item_property, empty array if not found or false if course could not be found
  4054. */
  4055. function api_get_item_property_info($course_id, $tool, $ref, $session_id = 0, $groupId = 0)
  4056. {
  4057. $courseInfo = api_get_course_info_by_id($course_id);
  4058. if (empty($courseInfo)) {
  4059. return false;
  4060. }
  4061. $tool = Database::escape_string($tool);
  4062. $course_id = $courseInfo['real_id'];
  4063. $ref = (int) $ref;
  4064. $session_id = (int) $session_id;
  4065. $sessionCondition = " session_id = $session_id";
  4066. if (empty($session_id)) {
  4067. $sessionCondition = ' (session_id = 0 OR session_id IS NULL) ';
  4068. }
  4069. // Definition of tables.
  4070. $table = Database::get_course_table(TABLE_ITEM_PROPERTY);
  4071. $sql = "SELECT * FROM $table
  4072. WHERE
  4073. c_id = $course_id AND
  4074. tool = '$tool' AND
  4075. ref = $ref AND
  4076. $sessionCondition ";
  4077. if (!empty($groupId)) {
  4078. $groupId = (int) $groupId;
  4079. $sql .= " AND to_group_id = $groupId ";
  4080. }
  4081. $rs = Database::query($sql);
  4082. $row = [];
  4083. if (Database::num_rows($rs) > 0) {
  4084. $row = Database::fetch_array($rs, 'ASSOC');
  4085. }
  4086. return $row;
  4087. }
  4088. /**
  4089. * Displays a combo box so the user can select his/her preferred language.
  4090. *
  4091. * @param string The desired name= value for the select
  4092. * @param bool Whether we use the JQuery Chozen library or not
  4093. * (in some cases, like the indexing language picker, it can alter the presentation)
  4094. *
  4095. * @return string
  4096. */
  4097. function api_get_languages_combo($name = 'language')
  4098. {
  4099. $ret = '';
  4100. $platformLanguage = api_get_setting('platformLanguage');
  4101. // Retrieve a complete list of all the languages.
  4102. $language_list = api_get_languages();
  4103. if (count($language_list['name']) < 2) {
  4104. return $ret;
  4105. }
  4106. // The the current language of the user so that his/her language occurs as selected in the dropdown menu.
  4107. if (isset($_SESSION['user_language_choice'])) {
  4108. $default = $_SESSION['user_language_choice'];
  4109. } else {
  4110. $default = $platformLanguage;
  4111. }
  4112. $languages = $language_list['name'];
  4113. $folder = $language_list['folder'];
  4114. $ret .= '<select name="'.$name.'" id="language_chosen" class="selectpicker show-tick form-control">';
  4115. foreach ($languages as $key => $value) {
  4116. if ($folder[$key] == $default) {
  4117. $selected = ' selected="selected"';
  4118. } else {
  4119. $selected = '';
  4120. }
  4121. $ret .= sprintf('<option value=%s" %s>%s</option>', $folder[$key], $selected, $value);
  4122. }
  4123. $ret .= '</select>';
  4124. return $ret;
  4125. }
  4126. /**
  4127. * Displays a form (drop down menu) so the user can select his/her preferred language.
  4128. * The form works with or without javascript.
  4129. *
  4130. * @param bool Hide form if only one language available (defaults to false = show the box anyway)
  4131. * @param bool $showAsButton
  4132. *
  4133. * @return string|null Display the box directly
  4134. */
  4135. function api_display_language_form($hide_if_no_choice = false, $showAsButton = false)
  4136. {
  4137. // Retrieve a complete list of all the languages.
  4138. $language_list = api_get_languages();
  4139. if (count($language_list['name']) <= 1 && $hide_if_no_choice) {
  4140. return; //don't show any form
  4141. }
  4142. // The the current language of the user so that his/her language occurs as selected in the dropdown menu.
  4143. if (isset($_SESSION['user_language_choice'])) {
  4144. $user_selected_language = $_SESSION['user_language_choice'];
  4145. }
  4146. if (empty($user_selected_language)) {
  4147. $user_selected_language = api_get_setting('platformLanguage');
  4148. }
  4149. $currentLanguageId = api_get_language_id($user_selected_language);
  4150. $currentLanguageInfo = api_get_language_info($currentLanguageId);
  4151. $countryCode = languageToCountryIsoCode($currentLanguageInfo['isocode']);
  4152. $url = api_get_self();
  4153. if ($showAsButton) {
  4154. $html = '<div class="btn-group">
  4155. <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
  4156. <span class="flag-icon flag-icon-'.$countryCode.'"></span>
  4157. '.$currentLanguageInfo['original_name'].'
  4158. <span class="caret">
  4159. </span>
  4160. </button>';
  4161. } else {
  4162. $html = '
  4163. <a href="'.$url.'" class="dropdown-toggle" data-toggle="dropdown" role="button">
  4164. <span class="flag-icon flag-icon-'.$countryCode.'"></span>
  4165. '.$currentLanguageInfo['original_name'].'
  4166. <span class="caret"></span>
  4167. </a>
  4168. ';
  4169. }
  4170. $html .= '<ul class="dropdown-menu" role="menu">';
  4171. foreach ($language_list['all'] as $key => $data) {
  4172. $urlLink = $url.'?language='.$data['english_name'];
  4173. $html .= '<li><a href="'.$urlLink.'"><span class="flag-icon flag-icon-'.languageToCountryIsoCode($data['isocode']).'"></span> '.$data['original_name'].'</a></li>';
  4174. }
  4175. $html .= '</ul>';
  4176. if ($showAsButton) {
  4177. $html .= '</div>';
  4178. }
  4179. return $html;
  4180. }
  4181. /**
  4182. * @param string $languageIsoCode
  4183. *
  4184. * @return string
  4185. */
  4186. function languageToCountryIsoCode($languageIsoCode)
  4187. {
  4188. // @todo save in DB
  4189. switch ($languageIsoCode) {
  4190. case 'ko':
  4191. $country = 'kr';
  4192. break;
  4193. case 'ja':
  4194. $country = 'jp';
  4195. break;
  4196. case 'ca':
  4197. $country = 'es';
  4198. break;
  4199. case 'gl':
  4200. $country = 'es';
  4201. break;
  4202. case 'ka':
  4203. $country = 'ge';
  4204. break;
  4205. case 'sl':
  4206. $country = 'si';
  4207. break;
  4208. case 'eu':
  4209. $country = 'es';
  4210. break;
  4211. case 'cs':
  4212. $country = 'cz';
  4213. break;
  4214. case 'el':
  4215. $country = 'ae';
  4216. break;
  4217. case 'ar':
  4218. $country = 'ae';
  4219. break;
  4220. case 'en':
  4221. $country = 'gb';
  4222. break;
  4223. case 'he':
  4224. $country = 'il';
  4225. break;
  4226. case 'uk':
  4227. $country = 'ua'; //Ukraine
  4228. break;
  4229. case 'da':
  4230. $country = 'dk';
  4231. break;
  4232. case 'pt-BR':
  4233. $country = 'br';
  4234. break;
  4235. case 'qu':
  4236. $country = 'pe';
  4237. break;
  4238. case 'sv':
  4239. $country = 'se';
  4240. break;
  4241. case 'zh-TW':
  4242. case 'zh':
  4243. $country = 'cn';
  4244. break;
  4245. default:
  4246. $country = $languageIsoCode;
  4247. break;
  4248. }
  4249. $country = strtolower($country);
  4250. return $country;
  4251. }
  4252. /**
  4253. * Returns a list of all the languages that are made available by the admin.
  4254. *
  4255. * @return array An array with all languages. Structure of the array is
  4256. * array['name'] = An array with the name of every language
  4257. * array['folder'] = An array with the corresponding names of the language-folders in the filesystem
  4258. */
  4259. function api_get_languages()
  4260. {
  4261. $tbl_language = Database::get_main_table(TABLE_MAIN_LANGUAGE);
  4262. $sql = "SELECT * FROM $tbl_language WHERE available='1'
  4263. ORDER BY original_name ASC";
  4264. $result = Database::query($sql);
  4265. $language_list = [];
  4266. while ($row = Database::fetch_array($result)) {
  4267. $language_list['name'][] = $row['original_name'];
  4268. $language_list['folder'][] = $row['dokeos_folder'];
  4269. $language_list['all'][] = $row;
  4270. }
  4271. return $language_list;
  4272. }
  4273. /**
  4274. * Returns a list of all the languages that are made available by the admin.
  4275. *
  4276. * @return array
  4277. */
  4278. function api_get_languages_to_array()
  4279. {
  4280. $tbl_language = Database::get_main_table(TABLE_MAIN_LANGUAGE);
  4281. $sql = "SELECT * FROM $tbl_language WHERE available='1' ORDER BY original_name ASC";
  4282. $result = Database::query($sql);
  4283. $languages = [];
  4284. while ($row = Database::fetch_array($result)) {
  4285. $languages[$row['dokeos_folder']] = $row['original_name'];
  4286. }
  4287. return $languages;
  4288. }
  4289. /**
  4290. * Returns the id (the database id) of a language.
  4291. *
  4292. * @param string language name (the corresponding name of the language-folder in the filesystem)
  4293. *
  4294. * @return int id of the language
  4295. */
  4296. function api_get_language_id($language)
  4297. {
  4298. $tbl_language = Database::get_main_table(TABLE_MAIN_LANGUAGE);
  4299. if (empty($language)) {
  4300. return null;
  4301. }
  4302. $language = Database::escape_string($language);
  4303. $sql = "SELECT id FROM $tbl_language
  4304. WHERE dokeos_folder = '$language' LIMIT 1";
  4305. $result = Database::query($sql);
  4306. $row = Database::fetch_array($result);
  4307. return $row['id'];
  4308. }
  4309. /**
  4310. * Gets language of the requested type for the current user. Types are :
  4311. * user_profil_lang : profile language of current user
  4312. * user_select_lang : language selected by user at login
  4313. * course_lang : language of the current course
  4314. * platform_lang : default platform language.
  4315. *
  4316. * @param string $lang_type
  4317. *
  4318. * @return string
  4319. */
  4320. function api_get_language_from_type($lang_type)
  4321. {
  4322. $return = false;
  4323. switch ($lang_type) {
  4324. case 'platform_lang':
  4325. $temp_lang = api_get_setting('platformLanguage');
  4326. if (!empty($temp_lang)) {
  4327. $return = $temp_lang;
  4328. }
  4329. break;
  4330. case 'user_profil_lang':
  4331. $_user = api_get_user_info();
  4332. if (isset($_user['language']) && !empty($_user['language'])) {
  4333. $return = $_user['language'];
  4334. }
  4335. break;
  4336. case 'user_selected_lang':
  4337. if (isset($_SESSION['user_language_choice']) && !empty($_SESSION['user_language_choice'])) {
  4338. $return = $_SESSION['user_language_choice'];
  4339. }
  4340. break;
  4341. case 'course_lang':
  4342. global $_course;
  4343. $cidReq = null;
  4344. if (empty($_course)) {
  4345. // Code modified because the local.inc.php file it's declarated after this work
  4346. // causing the function api_get_course_info() returns a null value
  4347. $cidReq = isset($_GET["cidReq"]) ? Database::escape_string($_GET["cidReq"]) : null;
  4348. $cDir = (!empty($_GET['cDir']) ? $_GET['cDir'] : null);
  4349. if (empty($cidReq) && !empty($cDir)) {
  4350. $c = CourseManager::getCourseCodeFromDirectory($cDir);
  4351. if ($c) {
  4352. $cidReq = $c;
  4353. }
  4354. }
  4355. }
  4356. $_course = api_get_course_info($cidReq);
  4357. if (isset($_course['language']) && !empty($_course['language'])) {
  4358. $return = $_course['language'];
  4359. $showCourseInUserLanguage = api_get_course_setting('show_course_in_user_language');
  4360. if ($showCourseInUserLanguage == 1) {
  4361. $userInfo = api_get_user_info();
  4362. if (isset($userInfo['language'])) {
  4363. $return = $userInfo['language'];
  4364. }
  4365. }
  4366. }
  4367. break;
  4368. default:
  4369. $return = false;
  4370. break;
  4371. }
  4372. return $return;
  4373. }
  4374. /**
  4375. * Get the language information by its id.
  4376. *
  4377. * @param int $languageId
  4378. *
  4379. * @throws Exception
  4380. *
  4381. * @return array
  4382. */
  4383. function api_get_language_info($languageId)
  4384. {
  4385. $language = Database::getManager()
  4386. ->find('ChamiloCoreBundle:Language', intval($languageId));
  4387. if (!$language) {
  4388. return [];
  4389. }
  4390. return [
  4391. 'id' => $language->getId(),
  4392. 'original_name' => $language->getOriginalName(),
  4393. 'english_name' => $language->getEnglishName(),
  4394. 'isocode' => $language->getIsocode(),
  4395. 'dokeos_folder' => $language->getDokeosFolder(),
  4396. 'available' => $language->getAvailable(),
  4397. 'parent_id' => $language->getParent() ? $language->getParent()->getId() : null,
  4398. ];
  4399. }
  4400. /**
  4401. * Returns the name of the visual (CSS) theme to be applied on the current page.
  4402. * The returned name depends on the platform, course or user -wide settings.
  4403. *
  4404. * @return string The visual theme's name, it is the name of a folder inside web/css/themes
  4405. */
  4406. function api_get_visual_theme()
  4407. {
  4408. static $visual_theme;
  4409. if (!isset($visual_theme)) {
  4410. // Get style directly from DB
  4411. $styleFromDatabase = api_get_settings_params_simple(
  4412. [
  4413. 'variable = ? AND access_url = ?' => [
  4414. 'stylesheets',
  4415. api_get_current_access_url_id(),
  4416. ],
  4417. ]
  4418. );
  4419. if ($styleFromDatabase) {
  4420. $platform_theme = $styleFromDatabase['selected_value'];
  4421. } else {
  4422. $platform_theme = api_get_setting('stylesheets');
  4423. }
  4424. // Platform's theme.
  4425. $visual_theme = $platform_theme;
  4426. if (api_get_setting('user_selected_theme') == 'true') {
  4427. $user_info = api_get_user_info();
  4428. if (isset($user_info['theme'])) {
  4429. $user_theme = $user_info['theme'];
  4430. if (!empty($user_theme)) {
  4431. $visual_theme = $user_theme;
  4432. // User's theme.
  4433. }
  4434. }
  4435. }
  4436. $course_id = api_get_course_id();
  4437. if (!empty($course_id)) {
  4438. if (api_get_setting('allow_course_theme') == 'true') {
  4439. $course_theme = api_get_course_setting('course_theme', $course_id);
  4440. if (!empty($course_theme) && $course_theme != -1) {
  4441. if (!empty($course_theme)) {
  4442. // Course's theme.
  4443. $visual_theme = $course_theme;
  4444. }
  4445. }
  4446. $allow_lp_theme = api_get_course_setting('allow_learning_path_theme');
  4447. if ($allow_lp_theme == 1) {
  4448. global $lp_theme_css, $lp_theme_config;
  4449. // These variables come from the file lp_controller.php.
  4450. if (!$lp_theme_config) {
  4451. if (!empty($lp_theme_css)) {
  4452. // LP's theme.
  4453. $visual_theme = $lp_theme_css;
  4454. }
  4455. }
  4456. }
  4457. }
  4458. }
  4459. if (empty($visual_theme)) {
  4460. $visual_theme = 'chamilo';
  4461. }
  4462. global $lp_theme_log;
  4463. if ($lp_theme_log) {
  4464. $visual_theme = $platform_theme;
  4465. }
  4466. }
  4467. return $visual_theme;
  4468. }
  4469. /**
  4470. * Returns a list of CSS themes currently available in the CSS folder
  4471. * The folder must have a default.css file.
  4472. *
  4473. * @param bool $getOnlyThemeFromVirtualInstance Used by the vchamilo plugin
  4474. *
  4475. * @return array list of themes directories from the css folder
  4476. * Note: Directory names (names of themes) in the file system should contain ASCII-characters only
  4477. */
  4478. function api_get_themes($getOnlyThemeFromVirtualInstance = false)
  4479. {
  4480. // This configuration value is set by the vchamilo plugin
  4481. $virtualTheme = api_get_configuration_value('virtual_css_theme_folder');
  4482. $readCssFolder = function ($dir) use ($virtualTheme) {
  4483. $finder = new Finder();
  4484. $themes = $finder->directories()->in($dir)->depth(0)->sortByName();
  4485. $list = [];
  4486. /** @var Symfony\Component\Finder\SplFileInfo $theme */
  4487. foreach ($themes as $theme) {
  4488. $folder = $theme->getFilename();
  4489. // A theme folder is consider if there's a default.css file
  4490. if (!file_exists($theme->getPathname().'/default.css')) {
  4491. continue;
  4492. }
  4493. $name = ucwords(str_replace('_', ' ', $folder));
  4494. if ($folder == $virtualTheme) {
  4495. continue;
  4496. }
  4497. $list[$folder] = $name;
  4498. }
  4499. return $list;
  4500. };
  4501. $dir = api_get_path(SYS_CSS_PATH).'themes/';
  4502. $list = $readCssFolder($dir);
  4503. if (!empty($virtualTheme)) {
  4504. $newList = $readCssFolder($dir.'/'.$virtualTheme);
  4505. if ($getOnlyThemeFromVirtualInstance) {
  4506. return $newList;
  4507. }
  4508. $list = $list + $newList;
  4509. asort($list);
  4510. }
  4511. return $list;
  4512. }
  4513. /**
  4514. * Find the largest sort value in a given user_course_category
  4515. * This function is used when we are moving a course to a different category
  4516. * and also when a user subscribes to courses (the new course is added at the end of the main category.
  4517. *
  4518. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
  4519. *
  4520. * @param int $user_course_category the id of the user_course_category
  4521. * @param int $user_id
  4522. *
  4523. * @return int the value of the highest sort of the user_course_category
  4524. */
  4525. function api_max_sort_value($user_course_category, $user_id)
  4526. {
  4527. $tbl_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  4528. $sql = "SELECT max(sort) as max_sort FROM $tbl_course_user
  4529. WHERE
  4530. user_id='".intval($user_id)."' AND
  4531. relation_type<>".COURSE_RELATION_TYPE_RRHH." AND
  4532. user_course_cat='".intval($user_course_category)."'";
  4533. $result_max = Database::query($sql);
  4534. if (Database::num_rows($result_max) == 1) {
  4535. $row_max = Database::fetch_array($result_max);
  4536. return $row_max['max_sort'];
  4537. }
  4538. return 0;
  4539. }
  4540. /**
  4541. * Transforms a number of seconds in hh:mm:ss format.
  4542. *
  4543. * @author Julian Prud'homme
  4544. *
  4545. * @param int the number of seconds
  4546. *
  4547. * @return string the formated time
  4548. */
  4549. function api_time_to_hms($seconds, $space = ':')
  4550. {
  4551. // $seconds = -1 means that we have wrong data in the db.
  4552. if ($seconds == -1) {
  4553. return
  4554. get_lang('Unknown').
  4555. Display::return_icon(
  4556. 'info2.gif',
  4557. get_lang('WrongDatasForTimeSpentOnThePlatform'),
  4558. ['align' => 'absmiddle', 'hspace' => '3px']
  4559. );
  4560. }
  4561. // How many hours ?
  4562. $hours = floor($seconds / 3600);
  4563. // How many minutes ?
  4564. $min = floor(($seconds - ($hours * 3600)) / 60);
  4565. // How many seconds
  4566. $sec = floor($seconds - ($hours * 3600) - ($min * 60));
  4567. if ($hours < 10) {
  4568. $hours = "0$hours";
  4569. }
  4570. if ($sec < 10) {
  4571. $sec = "0$sec";
  4572. }
  4573. if ($min < 10) {
  4574. $min = "0$min";
  4575. }
  4576. return $hours.$space.$min.$space.$sec;
  4577. }
  4578. /* FILE SYSTEM RELATED FUNCTIONS */
  4579. /**
  4580. * Returns the permissions to be assigned to every newly created directory by the web-server.
  4581. * The return value is based on the platform administrator's setting
  4582. * "Administration > Configuration settings > Security > Permissions for new directories".
  4583. *
  4584. * @return int returns the permissions in the format "Owner-Group-Others, Read-Write-Execute", as an integer value
  4585. */
  4586. function api_get_permissions_for_new_directories()
  4587. {
  4588. static $permissions;
  4589. if (!isset($permissions)) {
  4590. $permissions = trim(api_get_setting('permissions_for_new_directories'));
  4591. // The default value 0777 is according to that in the platform administration panel after fresh system installation.
  4592. $permissions = octdec(!empty($permissions) ? $permissions : '0777');
  4593. }
  4594. return $permissions;
  4595. }
  4596. /**
  4597. * Returns the permissions to be assigned to every newly created directory by the web-server.
  4598. * The return value is based on the platform administrator's setting
  4599. * "Administration > Configuration settings > Security > Permissions for new files".
  4600. *
  4601. * @return int returns the permissions in the format
  4602. * "Owner-Group-Others, Read-Write-Execute", as an integer value
  4603. */
  4604. function api_get_permissions_for_new_files()
  4605. {
  4606. static $permissions;
  4607. if (!isset($permissions)) {
  4608. $permissions = trim(api_get_setting('permissions_for_new_files'));
  4609. // The default value 0666 is according to that in the platform
  4610. // administration panel after fresh system installation.
  4611. $permissions = octdec(!empty($permissions) ? $permissions : '0666');
  4612. }
  4613. return $permissions;
  4614. }
  4615. /**
  4616. * Deletes a file, or a folder and its contents.
  4617. *
  4618. * @author Aidan Lister <aidan@php.net>
  4619. *
  4620. * @version 1.0.3
  4621. *
  4622. * @param string $dirname Directory to delete
  4623. * @param bool Deletes only the content or not
  4624. * @param bool $strict if one folder/file fails stop the loop
  4625. *
  4626. * @return bool Returns TRUE on success, FALSE on failure
  4627. *
  4628. * @see http://aidanlister.com/2004/04/recursively-deleting-a-folder-in-php/
  4629. *
  4630. * @author Yannick Warnier, adaptation for the Chamilo LMS, April, 2008
  4631. * @author Ivan Tcholakov, a sanity check about Directory class creation has been added, September, 2009
  4632. */
  4633. function rmdirr($dirname, $delete_only_content_in_folder = false, $strict = false)
  4634. {
  4635. $res = true;
  4636. // A sanity check.
  4637. if (!file_exists($dirname)) {
  4638. return false;
  4639. }
  4640. $php_errormsg = '';
  4641. // Simple delete for a file.
  4642. if (is_file($dirname) || is_link($dirname)) {
  4643. $res = unlink($dirname);
  4644. if ($res === false) {
  4645. error_log(__FILE__.' line '.__LINE__.': '.((bool) ini_get('track_errors') ? $php_errormsg : 'Error not recorded because track_errors is off in your php.ini'), 0);
  4646. }
  4647. return $res;
  4648. }
  4649. // Loop through the folder.
  4650. $dir = dir($dirname);
  4651. // A sanity check.
  4652. $is_object_dir = is_object($dir);
  4653. if ($is_object_dir) {
  4654. while (false !== $entry = $dir->read()) {
  4655. // Skip pointers.
  4656. if ($entry == '.' || $entry == '..') {
  4657. continue;
  4658. }
  4659. // Recurse.
  4660. if ($strict) {
  4661. $result = rmdirr("$dirname/$entry");
  4662. if ($result == false) {
  4663. $res = false;
  4664. break;
  4665. }
  4666. } else {
  4667. rmdirr("$dirname/$entry");
  4668. }
  4669. }
  4670. }
  4671. // Clean up.
  4672. if ($is_object_dir) {
  4673. $dir->close();
  4674. }
  4675. if ($delete_only_content_in_folder == false) {
  4676. $res = rmdir($dirname);
  4677. if ($res === false) {
  4678. error_log(__FILE__.' line '.__LINE__.': '.((bool) ini_get('track_errors') ? $php_errormsg : 'error not recorded because track_errors is off in your php.ini'), 0);
  4679. }
  4680. }
  4681. return $res;
  4682. }
  4683. // TODO: This function is to be simplified. File access modes to be implemented.
  4684. /**
  4685. * function adapted from a php.net comment
  4686. * copy recursively a folder.
  4687. *
  4688. * @param the source folder
  4689. * @param the dest folder
  4690. * @param an array of excluded file_name (without extension)
  4691. * @param copied_files the returned array of copied files
  4692. * @param string $source
  4693. * @param string $dest
  4694. */
  4695. function copyr($source, $dest, $exclude = [], $copied_files = [])
  4696. {
  4697. if (empty($dest)) {
  4698. return false;
  4699. }
  4700. // Simple copy for a file
  4701. if (is_file($source)) {
  4702. $path_info = pathinfo($source);
  4703. if (!in_array($path_info['filename'], $exclude)) {
  4704. copy($source, $dest);
  4705. }
  4706. return true;
  4707. } elseif (!is_dir($source)) {
  4708. //then source is not a dir nor a file, return
  4709. return false;
  4710. }
  4711. // Make destination directory.
  4712. if (!is_dir($dest)) {
  4713. mkdir($dest, api_get_permissions_for_new_directories());
  4714. }
  4715. // Loop through the folder.
  4716. $dir = dir($source);
  4717. while (false !== $entry = $dir->read()) {
  4718. // Skip pointers
  4719. if ($entry == '.' || $entry == '..') {
  4720. continue;
  4721. }
  4722. // Deep copy directories.
  4723. if ($dest !== "$source/$entry") {
  4724. $files = copyr("$source/$entry", "$dest/$entry", $exclude, $copied_files);
  4725. }
  4726. }
  4727. // Clean up.
  4728. $dir->close();
  4729. return true;
  4730. }
  4731. /**
  4732. * @todo: Using DIRECTORY_SEPARATOR is not recommended, this is an obsolete approach.
  4733. * Documentation header to be added here.
  4734. *
  4735. * @param string $pathname
  4736. * @param string $base_path_document
  4737. * @param int $session_id
  4738. *
  4739. * @return mixed True if directory already exists, false if a file already exists at
  4740. * the destination and null if everything goes according to plan
  4741. */
  4742. function copy_folder_course_session(
  4743. $pathname,
  4744. $base_path_document,
  4745. $session_id,
  4746. $course_info,
  4747. $document,
  4748. $source_course_id
  4749. ) {
  4750. $table = Database::get_course_table(TABLE_DOCUMENT);
  4751. $session_id = intval($session_id);
  4752. $source_course_id = intval($source_course_id);
  4753. // Check whether directory already exists.
  4754. if (is_dir($pathname) || empty($pathname)) {
  4755. return true;
  4756. }
  4757. // Ensure that a file with the same name does not already exist.
  4758. if (is_file($pathname)) {
  4759. trigger_error('copy_folder_course_session(): File exists', E_USER_WARNING);
  4760. return false;
  4761. }
  4762. $course_id = $course_info['real_id'];
  4763. $folders = explode(DIRECTORY_SEPARATOR, str_replace($base_path_document.DIRECTORY_SEPARATOR, '', $pathname));
  4764. $new_pathname = $base_path_document;
  4765. $path = '';
  4766. foreach ($folders as $folder) {
  4767. $new_pathname .= DIRECTORY_SEPARATOR.$folder;
  4768. $path .= DIRECTORY_SEPARATOR.$folder;
  4769. if (!file_exists($new_pathname)) {
  4770. $path = Database::escape_string($path);
  4771. $sql = "SELECT * FROM $table
  4772. WHERE
  4773. c_id = $source_course_id AND
  4774. path = '$path' AND
  4775. filetype = 'folder' AND
  4776. session_id = '$session_id'";
  4777. $rs1 = Database::query($sql);
  4778. $num_rows = Database::num_rows($rs1);
  4779. if ($num_rows == 0) {
  4780. mkdir($new_pathname, api_get_permissions_for_new_directories());
  4781. // Insert new folder with destination session_id.
  4782. $params = [
  4783. 'c_id' => $course_id,
  4784. 'path' => $path,
  4785. 'comment' => $document->comment,
  4786. 'title' => basename($new_pathname),
  4787. 'filetype' => 'folder',
  4788. 'size' => '0',
  4789. 'session_id' => $session_id,
  4790. ];
  4791. $document_id = Database::insert($table, $params);
  4792. if ($document_id) {
  4793. $sql = "UPDATE $table SET id = iid WHERE iid = $document_id";
  4794. Database::query($sql);
  4795. api_item_property_update(
  4796. $course_info,
  4797. TOOL_DOCUMENT,
  4798. $document_id,
  4799. 'FolderCreated',
  4800. api_get_user_id(),
  4801. 0,
  4802. 0,
  4803. null,
  4804. null,
  4805. $session_id
  4806. );
  4807. }
  4808. }
  4809. }
  4810. } // en foreach
  4811. }
  4812. // TODO: chmodr() is a better name. Some corrections are needed. Documentation header to be added here.
  4813. /**
  4814. * @param string $path
  4815. */
  4816. function api_chmod_R($path, $filemode)
  4817. {
  4818. if (!is_dir($path)) {
  4819. return chmod($path, $filemode);
  4820. }
  4821. $handler = opendir($path);
  4822. while ($file = readdir($handler)) {
  4823. if ($file != '.' && $file != '..') {
  4824. $fullpath = "$path/$file";
  4825. if (!is_dir($fullpath)) {
  4826. if (!chmod($fullpath, $filemode)) {
  4827. return false;
  4828. }
  4829. } else {
  4830. if (!api_chmod_R($fullpath, $filemode)) {
  4831. return false;
  4832. }
  4833. }
  4834. }
  4835. }
  4836. closedir($handler);
  4837. return chmod($path, $filemode);
  4838. }
  4839. // TODO: Where the following function has been copy/pased from? There is no information about author and license. Style, coding conventions...
  4840. /**
  4841. * Parse info file format. (e.g: file.info).
  4842. *
  4843. * Files should use an ini-like format to specify values.
  4844. * White-space generally doesn't matter, except inside values.
  4845. * e.g.
  4846. *
  4847. * @verbatim
  4848. * key = value
  4849. * key = "value"
  4850. * key = 'value'
  4851. * key = "multi-line
  4852. *
  4853. * value"
  4854. * key = 'multi-line
  4855. *
  4856. * value'
  4857. * key
  4858. * =
  4859. * 'value'
  4860. * @endverbatim
  4861. *
  4862. * Arrays are created using a GET-like syntax:
  4863. *
  4864. * @verbatim
  4865. * key[] = "numeric array"
  4866. * key[index] = "associative array"
  4867. * key[index][] = "nested numeric array"
  4868. * key[index][index] = "nested associative array"
  4869. * @endverbatim
  4870. *
  4871. * PHP constants are substituted in, but only when used as the entire value:
  4872. *
  4873. * Comments should start with a semi-colon at the beginning of a line.
  4874. *
  4875. * This function is NOT for placing arbitrary module-specific settings. Use
  4876. * variable_get() and variable_set() for that.
  4877. *
  4878. * Information stored in the module.info file:
  4879. * - name: The real name of the module for display purposes.
  4880. * - description: A brief description of the module.
  4881. * - dependencies: An array of shortnames of other modules this module depends on.
  4882. * - package: The name of the package of modules this module belongs to.
  4883. *
  4884. * Example of .info file:
  4885. * <code>
  4886. * @verbatim
  4887. * name = Forum
  4888. * description = Enables threaded discussions about general topics.
  4889. * dependencies[] = taxonomy
  4890. * dependencies[] = comment
  4891. * package = Core - optional
  4892. * version = VERSION
  4893. * @endverbatim
  4894. * </code>
  4895. *
  4896. * @param string $filename
  4897. * The file we are parsing. Accepts file with relative or absolute path.
  4898. *
  4899. * @return
  4900. * The info array
  4901. */
  4902. function api_parse_info_file($filename)
  4903. {
  4904. $info = [];
  4905. if (!file_exists($filename)) {
  4906. return $info;
  4907. }
  4908. $data = file_get_contents($filename);
  4909. if (preg_match_all('
  4910. @^\s* # Start at the beginning of a line, ignoring leading whitespace
  4911. ((?:
  4912. [^=;\[\]]| # Key names cannot contain equal signs, semi-colons or square brackets,
  4913. \[[^\[\]]*\] # unless they are balanced and not nested
  4914. )+?)
  4915. \s*=\s* # Key/value pairs are separated by equal signs (ignoring white-space)
  4916. (?:
  4917. ("(?:[^"]|(?<=\\\\)")*")| # Double-quoted string, which may contain slash-escaped quotes/slashes
  4918. (\'(?:[^\']|(?<=\\\\)\')*\')| # Single-quoted string, which may contain slash-escaped quotes/slashes
  4919. ([^\r\n]*?) # Non-quoted string
  4920. )\s*$ # Stop at the next end of a line, ignoring trailing whitespace
  4921. @msx', $data, $matches, PREG_SET_ORDER)) {
  4922. $key = $value1 = $value2 = $value3 = '';
  4923. foreach ($matches as $match) {
  4924. // Fetch the key and value string.
  4925. $i = 0;
  4926. foreach (['key', 'value1', 'value2', 'value3'] as $var) {
  4927. $$var = isset($match[++$i]) ? $match[$i] : '';
  4928. }
  4929. $value = stripslashes(substr($value1, 1, -1)).stripslashes(substr($value2, 1, -1)).$value3;
  4930. // Parse array syntax.
  4931. $keys = preg_split('/\]?\[/', rtrim($key, ']'));
  4932. $last = array_pop($keys);
  4933. $parent = &$info;
  4934. // Create nested arrays.
  4935. foreach ($keys as $key) {
  4936. if ($key == '') {
  4937. $key = count($parent);
  4938. }
  4939. if (!isset($parent[$key]) || !is_array($parent[$key])) {
  4940. $parent[$key] = [];
  4941. }
  4942. $parent = &$parent[$key];
  4943. }
  4944. // Handle PHP constants.
  4945. if (defined($value)) {
  4946. $value = constant($value);
  4947. }
  4948. // Insert actual value.
  4949. if ($last == '') {
  4950. $last = count($parent);
  4951. }
  4952. $parent[$last] = $value;
  4953. }
  4954. }
  4955. return $info;
  4956. }
  4957. /**
  4958. * Gets Chamilo version from the configuration files.
  4959. *
  4960. * @return string A string of type "1.8.4", or an empty string if the version could not be found
  4961. */
  4962. function api_get_version()
  4963. {
  4964. return (string) api_get_configuration_value('system_version');
  4965. }
  4966. /**
  4967. * Gets the software name (the name/brand of the Chamilo-based customized system).
  4968. *
  4969. * @return string
  4970. */
  4971. function api_get_software_name()
  4972. {
  4973. $name = api_get_configuration_value('software_name');
  4974. if (!empty($name)) {
  4975. return $name;
  4976. } else {
  4977. return 'Chamilo';
  4978. }
  4979. }
  4980. /**
  4981. * Checks whether status given in parameter exists in the platform.
  4982. *
  4983. * @param mixed the status (can be either int either string)
  4984. *
  4985. * @return bool if the status exists, else returns false
  4986. */
  4987. function api_status_exists($status_asked)
  4988. {
  4989. global $_status_list;
  4990. return in_array($status_asked, $_status_list) ? true : isset($_status_list[$status_asked]);
  4991. }
  4992. /**
  4993. * Checks whether status given in parameter exists in the platform. The function
  4994. * returns the status ID or false if it does not exist, but given the fact there
  4995. * is no "0" status, the return value can be checked against
  4996. * if(api_status_key()) to know if it exists.
  4997. *
  4998. * @param mixed The status (can be either int or string)
  4999. *
  5000. * @return mixed Status ID if exists, false otherwise
  5001. */
  5002. function api_status_key($status)
  5003. {
  5004. global $_status_list;
  5005. return isset($_status_list[$status]) ? $status : array_search($status, $_status_list);
  5006. }
  5007. /**
  5008. * Gets the status langvars list.
  5009. *
  5010. * @return string[] the list of status with their translations
  5011. */
  5012. function api_get_status_langvars()
  5013. {
  5014. return [
  5015. COURSEMANAGER => get_lang('Teacher', ''),
  5016. SESSIONADMIN => get_lang('SessionsAdmin', ''),
  5017. DRH => get_lang('Drh', ''),
  5018. STUDENT => get_lang('Student', ''),
  5019. ANONYMOUS => get_lang('Anonymous', ''),
  5020. STUDENT_BOSS => get_lang('RoleStudentBoss', ''),
  5021. INVITEE => get_lang('Invited'),
  5022. ];
  5023. }
  5024. /**
  5025. * The function that retrieves all the possible settings for a certain config setting.
  5026. *
  5027. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
  5028. */
  5029. function api_get_settings_options($var)
  5030. {
  5031. $table_settings_options = Database::get_main_table(TABLE_MAIN_SETTINGS_OPTIONS);
  5032. $var = Database::escape_string($var);
  5033. $sql = "SELECT * FROM $table_settings_options
  5034. WHERE variable = '$var'
  5035. ORDER BY id";
  5036. $result = Database::query($sql);
  5037. $settings_options_array = [];
  5038. while ($row = Database::fetch_array($result, 'ASSOC')) {
  5039. $settings_options_array[] = $row;
  5040. }
  5041. return $settings_options_array;
  5042. }
  5043. /**
  5044. * @param array $params
  5045. */
  5046. function api_set_setting_option($params)
  5047. {
  5048. $table = Database::get_main_table(TABLE_MAIN_SETTINGS_OPTIONS);
  5049. if (empty($params['id'])) {
  5050. Database::insert($table, $params);
  5051. } else {
  5052. Database::update($table, $params, ['id = ? ' => $params['id']]);
  5053. }
  5054. }
  5055. /**
  5056. * @param array $params
  5057. */
  5058. function api_set_setting_simple($params)
  5059. {
  5060. $table = Database::get_main_table(TABLE_MAIN_SETTINGS_CURRENT);
  5061. $url_id = api_get_current_access_url_id();
  5062. if (empty($params['id'])) {
  5063. $params['access_url'] = $url_id;
  5064. Database::insert($table, $params);
  5065. } else {
  5066. Database::update($table, $params, ['id = ? ' => [$params['id']]]);
  5067. }
  5068. }
  5069. /**
  5070. * @param int $id
  5071. */
  5072. function api_delete_setting_option($id)
  5073. {
  5074. $table = Database::get_main_table(TABLE_MAIN_SETTINGS_OPTIONS);
  5075. if (!empty($id)) {
  5076. Database::delete($table, ['id = ? ' => $id]);
  5077. }
  5078. }
  5079. /**
  5080. * Sets a platform configuration setting to a given value.
  5081. *
  5082. * @param string The variable we want to update
  5083. * @param string The value we want to record
  5084. * @param string The sub-variable if any (in most cases, this will remain null)
  5085. * @param string The category if any (in most cases, this will remain null)
  5086. * @param int The access_url for which this parameter is valid
  5087. * @param string $cat
  5088. *
  5089. * @return bool|null
  5090. */
  5091. function api_set_setting($var, $value, $subvar = null, $cat = null, $access_url = 1)
  5092. {
  5093. if (empty($var)) {
  5094. return false;
  5095. }
  5096. $t_settings = Database::get_main_table(TABLE_MAIN_SETTINGS_CURRENT);
  5097. $var = Database::escape_string($var);
  5098. $value = Database::escape_string($value);
  5099. $access_url = (int) $access_url;
  5100. if (empty($access_url)) {
  5101. $access_url = 1;
  5102. }
  5103. $select = "SELECT id FROM $t_settings WHERE variable = '$var' ";
  5104. if (!empty($subvar)) {
  5105. $subvar = Database::escape_string($subvar);
  5106. $select .= " AND subkey = '$subvar'";
  5107. }
  5108. if (!empty($cat)) {
  5109. $cat = Database::escape_string($cat);
  5110. $select .= " AND category = '$cat'";
  5111. }
  5112. if ($access_url > 1) {
  5113. $select .= " AND access_url = $access_url";
  5114. } else {
  5115. $select .= " AND access_url = 1 ";
  5116. }
  5117. $res = Database::query($select);
  5118. if (Database::num_rows($res) > 0) {
  5119. // Found item for this access_url.
  5120. $row = Database::fetch_array($res);
  5121. $sql = "UPDATE $t_settings SET selected_value = '$value'
  5122. WHERE id = ".$row['id'];
  5123. Database::query($sql);
  5124. } else {
  5125. // Item not found for this access_url, we have to check if it exist with access_url = 1
  5126. $select = "SELECT * FROM $t_settings
  5127. WHERE variable = '$var' AND access_url = 1 ";
  5128. // Just in case
  5129. if ($access_url == 1) {
  5130. if (!empty($subvar)) {
  5131. $select .= " AND subkey = '$subvar'";
  5132. }
  5133. if (!empty($cat)) {
  5134. $select .= " AND category = '$cat'";
  5135. }
  5136. $res = Database::query($select);
  5137. if (Database::num_rows($res) > 0) {
  5138. // We have a setting for access_url 1, but none for the current one, so create one.
  5139. $row = Database::fetch_array($res);
  5140. $insert = "INSERT INTO $t_settings (variable, subkey, type,category, selected_value, title, comment, scope, subkeytext, access_url)
  5141. VALUES
  5142. ('".$row['variable']."',".(!empty($row['subkey']) ? "'".$row['subkey']."'" : "NULL").",".
  5143. "'".$row['type']."','".$row['category']."',".
  5144. "'$value','".$row['title']."',".
  5145. "".(!empty($row['comment']) ? "'".$row['comment']."'" : "NULL").",".(!empty($row['scope']) ? "'".$row['scope']."'" : "NULL").",".
  5146. "".(!empty($row['subkeytext']) ? "'".$row['subkeytext']."'" : "NULL").",$access_url)";
  5147. Database::query($insert);
  5148. } else {
  5149. // Such a setting does not exist.
  5150. //error_log(__FILE__.':'.__LINE__.': Attempting to update setting '.$var.' ('.$subvar.') which does not exist at all', 0);
  5151. }
  5152. } else {
  5153. // Other access url.
  5154. if (!empty($subvar)) {
  5155. $select .= " AND subkey = '$subvar'";
  5156. }
  5157. if (!empty($cat)) {
  5158. $select .= " AND category = '$cat'";
  5159. }
  5160. $res = Database::query($select);
  5161. if (Database::num_rows($res) > 0) {
  5162. // We have a setting for access_url 1, but none for the current one, so create one.
  5163. $row = Database::fetch_array($res);
  5164. if ($row['access_url_changeable'] == 1) {
  5165. $insert = "INSERT INTO $t_settings (variable,subkey, type,category, selected_value,title, comment,scope, subkeytext,access_url, access_url_changeable) VALUES
  5166. ('".$row['variable']."',".
  5167. (!empty($row['subkey']) ? "'".$row['subkey']."'" : "NULL").",".
  5168. "'".$row['type']."','".$row['category']."',".
  5169. "'$value','".$row['title']."',".
  5170. "".(!empty($row['comment']) ? "'".$row['comment']."'" : "NULL").",".
  5171. (!empty($row['scope']) ? "'".$row['scope']."'" : "NULL").",".
  5172. "".(!empty($row['subkeytext']) ? "'".$row['subkeytext']."'" : "NULL").",$access_url,".$row['access_url_changeable'].")";
  5173. Database::query($insert);
  5174. }
  5175. } else { // Such a setting does not exist.
  5176. //error_log(__FILE__.':'.__LINE__.': Attempting to update setting '.$var.' ('.$subvar.') which does not exist at all. The access_url is: '.$access_url.' ',0);
  5177. }
  5178. }
  5179. }
  5180. }
  5181. /**
  5182. * Sets a whole category of settings to one specific value.
  5183. *
  5184. * @param string Category
  5185. * @param string Value
  5186. * @param int Access URL. Optional. Defaults to 1
  5187. * @param array Optional array of filters on field type
  5188. * @param string $category
  5189. * @param string $value
  5190. *
  5191. * @return bool
  5192. */
  5193. function api_set_settings_category($category, $value = null, $access_url = 1, $fieldtype = [])
  5194. {
  5195. if (empty($category)) {
  5196. return false;
  5197. }
  5198. $category = Database::escape_string($category);
  5199. $t_s = Database::get_main_table(TABLE_MAIN_SETTINGS_CURRENT);
  5200. $access_url = (int) $access_url;
  5201. if (empty($access_url)) {
  5202. $access_url = 1;
  5203. }
  5204. if (isset($value)) {
  5205. $value = Database::escape_string($value);
  5206. $sql = "UPDATE $t_s SET selected_value = '$value'
  5207. WHERE category = '$category' AND access_url = $access_url";
  5208. if (is_array($fieldtype) && count($fieldtype) > 0) {
  5209. $sql .= " AND ( ";
  5210. $i = 0;
  5211. foreach ($fieldtype as $type) {
  5212. if ($i > 0) {
  5213. $sql .= ' OR ';
  5214. }
  5215. $type = Database::escape_string($type);
  5216. $sql .= " type='".$type."' ";
  5217. $i++;
  5218. }
  5219. $sql .= ")";
  5220. }
  5221. $res = Database::query($sql);
  5222. return $res !== false;
  5223. } else {
  5224. $sql = "UPDATE $t_s SET selected_value = NULL
  5225. WHERE category = '$category' AND access_url = $access_url";
  5226. if (is_array($fieldtype) && count($fieldtype) > 0) {
  5227. $sql .= " AND ( ";
  5228. $i = 0;
  5229. foreach ($fieldtype as $type) {
  5230. if ($i > 0) {
  5231. $sql .= ' OR ';
  5232. }
  5233. $type = Database::escape_string($type);
  5234. $sql .= " type='".$type."' ";
  5235. $i++;
  5236. }
  5237. $sql .= ")";
  5238. }
  5239. $res = Database::query($sql);
  5240. return $res !== false;
  5241. }
  5242. }
  5243. /**
  5244. * Gets all available access urls in an array (as in the database).
  5245. *
  5246. * @return array An array of database records
  5247. */
  5248. function api_get_access_urls($from = 0, $to = 1000000, $order = 'url', $direction = 'ASC')
  5249. {
  5250. $table = Database::get_main_table(TABLE_MAIN_ACCESS_URL);
  5251. $from = (int) $from;
  5252. $to = (int) $to;
  5253. $order = Database::escape_string($order, null, false);
  5254. $direction = Database::escape_string($direction, null, false);
  5255. $sql = "SELECT id, url, description, active, created_by, tms
  5256. FROM $table
  5257. ORDER BY $order $direction
  5258. LIMIT $to OFFSET $from";
  5259. $res = Database::query($sql);
  5260. return Database::store_result($res);
  5261. }
  5262. /**
  5263. * Gets the access url info in an array.
  5264. *
  5265. * @param int $id Id of the access url
  5266. * @param bool $returnDefault Set to false if you want the real URL if URL 1 is still 'http://localhost/'
  5267. *
  5268. * @return array All the info (url, description, active, created_by, tms)
  5269. * from the access_url table
  5270. *
  5271. * @author Julio Montoya
  5272. */
  5273. function api_get_access_url($id, $returnDefault = true)
  5274. {
  5275. static $staticResult;
  5276. $id = (int) $id;
  5277. if (isset($staticResult[$id])) {
  5278. $result = $staticResult[$id];
  5279. } else {
  5280. // Calling the Database:: library dont work this is handmade.
  5281. $table_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL);
  5282. $sql = "SELECT url, description, active, created_by, tms
  5283. FROM $table_access_url WHERE id = '$id' ";
  5284. $res = Database::query($sql);
  5285. $result = @Database::fetch_array($res);
  5286. $staticResult[$id] = $result;
  5287. }
  5288. // If the result url is 'http://localhost/' (the default) and the root_web
  5289. // (=current url) is different, and the $id is = 1 (which might mean
  5290. // api_get_current_access_url_id() returned 1 by default), then return the
  5291. // root_web setting instead of the current URL
  5292. // This is provided as an option to avoid breaking the storage of URL-specific
  5293. // homepages in home/localhost/
  5294. if ($id === 1 && $returnDefault === false) {
  5295. $currentUrl = api_get_current_access_url_id();
  5296. // only do this if we are on the main URL (=1), otherwise we could get
  5297. // information on another URL instead of the one asked as parameter
  5298. if ($currentUrl === 1) {
  5299. $rootWeb = api_get_path(WEB_PATH);
  5300. $default = 'http://localhost/';
  5301. if ($result['url'] === $default && $rootWeb != $default) {
  5302. $result['url'] = $rootWeb;
  5303. }
  5304. }
  5305. }
  5306. return $result;
  5307. }
  5308. /**
  5309. * Gets all the current settings for a specific access url.
  5310. *
  5311. * @param string The category, if any, that we want to get
  5312. * @param string Whether we want a simple list (display a category) or
  5313. * a grouped list (group by variable as in settings.php default). Values: 'list' or 'group'
  5314. * @param int Access URL's ID. Optional. Uses 1 by default, which is the unique URL
  5315. *
  5316. * @return array Array of database results for the current settings of the current access URL
  5317. */
  5318. function &api_get_settings($cat = null, $ordering = 'list', $access_url = 1, $url_changeable = 0)
  5319. {
  5320. $table = Database::get_main_table(TABLE_MAIN_SETTINGS_CURRENT);
  5321. $access_url = (int) $access_url;
  5322. $where_condition = '';
  5323. if ($url_changeable == 1) {
  5324. $where_condition = " AND access_url_changeable= '1' ";
  5325. }
  5326. if (empty($access_url) || $access_url == -1) {
  5327. $access_url = 1;
  5328. }
  5329. $sql = "SELECT * FROM $table
  5330. WHERE access_url = $access_url $where_condition ";
  5331. if (!empty($cat)) {
  5332. $cat = Database::escape_string($cat);
  5333. $sql .= " AND category='$cat' ";
  5334. }
  5335. if ($ordering == 'group') {
  5336. $sql .= " ORDER BY id ASC";
  5337. } else {
  5338. $sql .= " ORDER BY 1,2 ASC";
  5339. }
  5340. $result = Database::query($sql);
  5341. if ($result === null) {
  5342. return [];
  5343. }
  5344. $result = Database::store_result($result, 'ASSOC');
  5345. return $result;
  5346. }
  5347. /**
  5348. * @param string $value The value we want to record
  5349. * @param string $variable The variable name we want to insert
  5350. * @param string $subKey The subkey for the variable we want to insert
  5351. * @param string $type The type for the variable we want to insert
  5352. * @param string $category The category for the variable we want to insert
  5353. * @param string $title The title
  5354. * @param string $comment The comment
  5355. * @param string $scope The scope
  5356. * @param string $subKeyText The subkey text
  5357. * @param int $accessUrlId The access_url for which this parameter is valid
  5358. * @param int $visibility The changeability of this setting for non-master urls
  5359. *
  5360. * @return int The setting ID
  5361. */
  5362. function api_add_setting(
  5363. $value,
  5364. $variable,
  5365. $subKey = '',
  5366. $type = 'textfield',
  5367. $category = '',
  5368. $title = '',
  5369. $comment = '',
  5370. $scope = '',
  5371. $subKeyText = '',
  5372. $accessUrlId = 1,
  5373. $visibility = 0
  5374. ) {
  5375. $em = Database::getManager();
  5376. $settingRepo = $em->getRepository('ChamiloCoreBundle:SettingsCurrent');
  5377. $accessUrlId = (int) $accessUrlId ?: 1;
  5378. if (is_array($value)) {
  5379. $value = serialize($value);
  5380. } else {
  5381. $value = trim($value);
  5382. }
  5383. $criteria = ['variable' => $variable, 'accessUrl' => $accessUrlId];
  5384. if (!empty($subKey)) {
  5385. $criteria['subkey'] = $subKey;
  5386. }
  5387. // Check if this variable doesn't exist already
  5388. /** @var SettingsCurrent $setting */
  5389. $setting = $settingRepo->findOneBy($criteria);
  5390. if ($setting) {
  5391. $setting->setSelectedValue($value);
  5392. $em->persist($setting);
  5393. $em->flush();
  5394. return $setting->getId();
  5395. }
  5396. // Item not found for this access_url, we have to check if the whole thing is missing
  5397. // (in which case we ignore the insert) or if there *is* a record but just for access_url = 1
  5398. $setting = new SettingsCurrent();
  5399. $setting
  5400. ->setVariable($variable)
  5401. ->setSelectedValue($value)
  5402. ->setType($type)
  5403. ->setCategory($category)
  5404. ->setSubkey($subKey)
  5405. ->setTitle($title)
  5406. ->setComment($comment)
  5407. ->setScope($scope)
  5408. ->setSubkeytext($subKeyText)
  5409. ->setAccessUrl($accessUrlId)
  5410. ->setAccessUrlChangeable($visibility);
  5411. $em->persist($setting);
  5412. $em->flush();
  5413. return $setting->getId();
  5414. }
  5415. /**
  5416. * Checks wether a user can or can't view the contents of a course.
  5417. *
  5418. * @deprecated use CourseManager::is_user_subscribed_in_course
  5419. *
  5420. * @param int $userid User id or NULL to get it from $_SESSION
  5421. * @param int $cid course id to check whether the user is allowed
  5422. *
  5423. * @return bool
  5424. */
  5425. function api_is_course_visible_for_user($userid = null, $cid = null)
  5426. {
  5427. if ($userid === null) {
  5428. $userid = api_get_user_id();
  5429. }
  5430. if (empty($userid) || strval(intval($userid)) != $userid) {
  5431. if (api_is_anonymous()) {
  5432. $userid = api_get_anonymous_id();
  5433. } else {
  5434. return false;
  5435. }
  5436. }
  5437. $cid = Database::escape_string($cid);
  5438. $courseInfo = api_get_course_info($cid);
  5439. $courseId = $courseInfo['real_id'];
  5440. $is_platformAdmin = api_is_platform_admin();
  5441. $course_table = Database::get_main_table(TABLE_MAIN_COURSE);
  5442. $course_cat_table = Database::get_main_table(TABLE_MAIN_CATEGORY);
  5443. $sql = "SELECT
  5444. $course_table.category_code,
  5445. $course_table.visibility,
  5446. $course_table.code,
  5447. $course_cat_table.code
  5448. FROM $course_table
  5449. LEFT JOIN $course_cat_table
  5450. ON $course_table.category_code = $course_cat_table.code
  5451. WHERE
  5452. $course_table.code = '$cid'
  5453. LIMIT 1";
  5454. $result = Database::query($sql);
  5455. if (Database::num_rows($result) > 0) {
  5456. $visibility = Database::fetch_array($result);
  5457. $visibility = $visibility['visibility'];
  5458. } else {
  5459. $visibility = 0;
  5460. }
  5461. // Shortcut permissions in case the visibility is "open to the world".
  5462. if ($visibility === COURSE_VISIBILITY_OPEN_WORLD) {
  5463. return true;
  5464. }
  5465. $tbl_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  5466. $sql = "SELECT
  5467. is_tutor, status
  5468. FROM $tbl_course_user
  5469. WHERE
  5470. user_id = '$userid' AND
  5471. relation_type <> '".COURSE_RELATION_TYPE_RRHH."' AND
  5472. c_id = $courseId
  5473. LIMIT 1";
  5474. $result = Database::query($sql);
  5475. if (Database::num_rows($result) > 0) {
  5476. // This user has got a recorded state for this course.
  5477. $cuData = Database::fetch_array($result);
  5478. $is_courseMember = true;
  5479. $is_courseAdmin = ($cuData['status'] == 1);
  5480. }
  5481. if (!$is_courseAdmin) {
  5482. // This user has no status related to this course.
  5483. // Is it the session coach or the session admin?
  5484. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  5485. $tbl_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  5486. $tbl_session_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  5487. $sql = "SELECT
  5488. session.id_coach, session_admin_id, session.id
  5489. FROM
  5490. $tbl_session as session
  5491. INNER JOIN $tbl_session_course
  5492. ON session_rel_course.session_id = session.id
  5493. AND session_rel_course.c_id = '$courseId'
  5494. LIMIT 1";
  5495. $result = Database::query($sql);
  5496. $row = Database::store_result($result);
  5497. if ($row[0]['id_coach'] == $userid) {
  5498. $is_courseMember = true;
  5499. $is_courseAdmin = false;
  5500. } elseif ($row[0]['session_admin_id'] == $userid) {
  5501. $is_courseMember = false;
  5502. $is_courseAdmin = false;
  5503. } else {
  5504. // Check if the current user is the course coach.
  5505. $sql = "SELECT 1
  5506. FROM $tbl_session_course
  5507. WHERE session_rel_course.c_id = '$courseId'
  5508. AND session_rel_course.id_coach = '$userid'
  5509. LIMIT 1";
  5510. $result = Database::query($sql);
  5511. //if ($row = Database::fetch_array($result)) {
  5512. if (Database::num_rows($result) > 0) {
  5513. $is_courseMember = true;
  5514. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  5515. $sql = "SELECT status FROM $tbl_user
  5516. WHERE user_id = $userid
  5517. LIMIT 1";
  5518. $result = Database::query($sql);
  5519. if (Database::result($result, 0, 0) == 1) {
  5520. $is_courseAdmin = true;
  5521. } else {
  5522. $is_courseAdmin = false;
  5523. }
  5524. } else {
  5525. // Check if the user is a student is this session.
  5526. $sql = "SELECT id
  5527. FROM $tbl_session_course_user
  5528. WHERE
  5529. user_id = '$userid' AND
  5530. c_id = '$courseId'
  5531. LIMIT 1";
  5532. if (Database::num_rows($result) > 0) {
  5533. // This user haa got a recorded state for this course.
  5534. while ($row = Database::fetch_array($result)) {
  5535. $is_courseMember = true;
  5536. $is_courseAdmin = false;
  5537. }
  5538. }
  5539. }
  5540. }
  5541. }
  5542. switch ($visibility) {
  5543. case COURSE_VISIBILITY_OPEN_WORLD:
  5544. return true;
  5545. case COURSE_VISIBILITY_OPEN_PLATFORM:
  5546. return isset($userid);
  5547. case COURSE_VISIBILITY_REGISTERED:
  5548. case COURSE_VISIBILITY_CLOSED:
  5549. return $is_platformAdmin || $is_courseMember || $is_courseAdmin;
  5550. case COURSE_VISIBILITY_HIDDEN:
  5551. return $is_platformAdmin;
  5552. }
  5553. return false;
  5554. }
  5555. /**
  5556. * Returns whether an element (forum, message, survey ...) belongs to a session or not.
  5557. *
  5558. * @param string the tool of the element
  5559. * @param int the element id in database
  5560. * @param int the session_id to compare with element session id
  5561. *
  5562. * @return bool true if the element is in the session, false else
  5563. */
  5564. function api_is_element_in_the_session($tool, $element_id, $session_id = null)
  5565. {
  5566. if (is_null($session_id)) {
  5567. $session_id = api_get_session_id();
  5568. }
  5569. $element_id = (int) $element_id;
  5570. if (empty($element_id)) {
  5571. return false;
  5572. }
  5573. // Get information to build query depending of the tool.
  5574. switch ($tool) {
  5575. case TOOL_SURVEY:
  5576. $table_tool = Database::get_course_table(TABLE_SURVEY);
  5577. $key_field = 'survey_id';
  5578. break;
  5579. case TOOL_ANNOUNCEMENT:
  5580. $table_tool = Database::get_course_table(TABLE_ANNOUNCEMENT);
  5581. $key_field = 'id';
  5582. break;
  5583. case TOOL_AGENDA:
  5584. $table_tool = Database::get_course_table(TABLE_AGENDA);
  5585. $key_field = 'id';
  5586. break;
  5587. case TOOL_GROUP:
  5588. $table_tool = Database::get_course_table(TABLE_GROUP);
  5589. $key_field = 'id';
  5590. break;
  5591. default:
  5592. return false;
  5593. }
  5594. $course_id = api_get_course_int_id();
  5595. $sql = "SELECT session_id FROM $table_tool
  5596. WHERE c_id = $course_id AND $key_field = ".$element_id;
  5597. $rs = Database::query($sql);
  5598. if ($element_session_id = Database::result($rs, 0, 0)) {
  5599. if ($element_session_id == intval($session_id)) {
  5600. // The element belongs to the session.
  5601. return true;
  5602. }
  5603. }
  5604. return false;
  5605. }
  5606. /**
  5607. * Replaces "forbidden" characters in a filename string.
  5608. *
  5609. * @param string $filename
  5610. * @param bool $treat_spaces_as_hyphens
  5611. *
  5612. * @return string
  5613. */
  5614. function api_replace_dangerous_char($filename, $treat_spaces_as_hyphens = true)
  5615. {
  5616. // Some non-properly encoded file names can cause the whole file to be
  5617. // skipped when uploaded. Avoid this by detecting the encoding and
  5618. // converting to UTF-8, setting the source as ASCII (a reasonably
  5619. // limited characters set) if nothing could be found (BT#
  5620. $encoding = api_detect_encoding($filename);
  5621. if (empty($encoding)) {
  5622. $encoding = 'ASCII';
  5623. if (!api_is_valid_ascii($filename)) {
  5624. // try iconv and try non standard ASCII a.k.a CP437
  5625. // see BT#15022
  5626. if (function_exists('iconv')) {
  5627. $result = iconv('CP437', 'UTF-8', $filename);
  5628. if (api_is_valid_utf8($result)) {
  5629. $filename = $result;
  5630. $encoding = 'UTF-8';
  5631. }
  5632. }
  5633. }
  5634. }
  5635. $filename = api_to_system_encoding($filename, $encoding);
  5636. $url = URLify::filter(
  5637. $filename,
  5638. 250,
  5639. '',
  5640. true,
  5641. true,
  5642. false,
  5643. false,
  5644. $treat_spaces_as_hyphens
  5645. );
  5646. return $url;
  5647. }
  5648. /**
  5649. * Fixes the $_SERVER['REQUEST_URI'] that is empty in IIS6.
  5650. *
  5651. * @author Ivan Tcholakov, 28-JUN-2006.
  5652. */
  5653. function api_request_uri()
  5654. {
  5655. if (!empty($_SERVER['REQUEST_URI'])) {
  5656. return $_SERVER['REQUEST_URI'];
  5657. }
  5658. $uri = $_SERVER['SCRIPT_NAME'];
  5659. if (!empty($_SERVER['QUERY_STRING'])) {
  5660. $uri .= '?'.$_SERVER['QUERY_STRING'];
  5661. }
  5662. $_SERVER['REQUEST_URI'] = $uri;
  5663. return $uri;
  5664. }
  5665. /** Gets the current access_url id of the Chamilo Platform
  5666. * @author Julio Montoya <gugli100@gmail.com>
  5667. *
  5668. * @return int access_url_id of the current Chamilo Installation
  5669. */
  5670. function api_get_current_access_url_id()
  5671. {
  5672. $access_url_table = Database::get_main_table(TABLE_MAIN_ACCESS_URL);
  5673. $path = Database::escape_string(api_get_path(WEB_PATH));
  5674. $sql = "SELECT id FROM $access_url_table WHERE url = '".$path."'";
  5675. $result = Database::query($sql);
  5676. if (Database::num_rows($result) > 0) {
  5677. $access_url_id = Database::result($result, 0, 0);
  5678. if ($access_url_id === false) {
  5679. return -1;
  5680. }
  5681. return (int) $access_url_id;
  5682. }
  5683. //if the url in WEB_PATH was not found, it can only mean that there is
  5684. // either a configuration problem or the first URL has not been defined yet
  5685. // (by default it is http://localhost/). Thus the more sensible thing we can
  5686. // do is return 1 (the main URL) as the user cannot hack this value anyway
  5687. return 1;
  5688. }
  5689. /**
  5690. * Gets the registered urls from a given user id.
  5691. *
  5692. * @author Julio Montoya <gugli100@gmail.com>
  5693. *
  5694. * @return int user id
  5695. */
  5696. function api_get_access_url_from_user($user_id)
  5697. {
  5698. $user_id = (int) $user_id;
  5699. $table_url_rel_user = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_USER);
  5700. $table_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL);
  5701. $sql = "SELECT access_url_id
  5702. FROM $table_url_rel_user url_rel_user
  5703. INNER JOIN $table_url u
  5704. ON (url_rel_user.access_url_id = u.id)
  5705. WHERE user_id = ".intval($user_id);
  5706. $result = Database::query($sql);
  5707. $list = [];
  5708. while ($row = Database::fetch_array($result, 'ASSOC')) {
  5709. $list[] = $row['access_url_id'];
  5710. }
  5711. return $list;
  5712. }
  5713. /**
  5714. * Gets the status of a user in a course.
  5715. *
  5716. * @param int $user_id
  5717. * @param int $courseId
  5718. *
  5719. * @return int user status
  5720. */
  5721. function api_get_status_of_user_in_course($user_id, $courseId)
  5722. {
  5723. $tbl_rel_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  5724. if (!empty($user_id) && !empty($courseId)) {
  5725. $user_id = intval($user_id);
  5726. $courseId = intval($courseId);
  5727. $sql = 'SELECT status
  5728. FROM '.$tbl_rel_course_user.'
  5729. WHERE user_id='.$user_id.' AND c_id = '.$courseId;
  5730. $result = Database::query($sql);
  5731. $row_status = Database::fetch_array($result, 'ASSOC');
  5732. return $row_status['status'];
  5733. } else {
  5734. return 0;
  5735. }
  5736. }
  5737. /**
  5738. * Checks whether the curent user is in a group or not.
  5739. *
  5740. * @param string The group id - optional (takes it from session if not given)
  5741. * @param string The course code - optional (no additional check by course if course code is not given)
  5742. *
  5743. * @return bool
  5744. *
  5745. * @author Ivan Tcholakov
  5746. */
  5747. function api_is_in_group($groupIdParam = null, $courseCodeParam = null)
  5748. {
  5749. if (!empty($courseCodeParam)) {
  5750. $courseCode = api_get_course_id();
  5751. if (!empty($courseCode)) {
  5752. if ($courseCodeParam != $courseCode) {
  5753. return false;
  5754. }
  5755. } else {
  5756. return false;
  5757. }
  5758. }
  5759. $groupId = api_get_group_id();
  5760. if (isset($groupId) && $groupId != '') {
  5761. if (!empty($groupIdParam)) {
  5762. return $groupIdParam == $groupId;
  5763. } else {
  5764. return true;
  5765. }
  5766. }
  5767. return false;
  5768. }
  5769. /**
  5770. * Checks whether a secret key is valid.
  5771. *
  5772. * @param string $original_key_secret - secret key from (webservice) client
  5773. * @param string $security_key - security key from Chamilo
  5774. *
  5775. * @return bool - true if secret key is valid, false otherwise
  5776. */
  5777. function api_is_valid_secret_key($original_key_secret, $security_key)
  5778. {
  5779. return $original_key_secret == sha1($security_key);
  5780. }
  5781. /**
  5782. * Checks whether a user is into course.
  5783. *
  5784. * @param int $course_id - the course id
  5785. * @param int $user_id - the user id
  5786. *
  5787. * @return bool
  5788. */
  5789. function api_is_user_of_course($course_id, $user_id)
  5790. {
  5791. $tbl_course_rel_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  5792. $sql = 'SELECT user_id FROM '.$tbl_course_rel_user.'
  5793. WHERE
  5794. c_id ="'.intval($course_id).'" AND
  5795. user_id = "'.intval($user_id).'" AND
  5796. relation_type <> '.COURSE_RELATION_TYPE_RRHH.' ';
  5797. $result = Database::query($sql);
  5798. return Database::num_rows($result) == 1;
  5799. }
  5800. /**
  5801. * Checks whether the server's operating system is Windows (TM).
  5802. *
  5803. * @return bool - true if the operating system is Windows, false otherwise
  5804. */
  5805. function api_is_windows_os()
  5806. {
  5807. if (function_exists('php_uname')) {
  5808. // php_uname() exists as of PHP 4.0.2, according to the documentation.
  5809. // We expect that this function will always work for Chamilo 1.8.x.
  5810. $os = php_uname();
  5811. }
  5812. // The following methods are not needed, but let them stay, just in case.
  5813. elseif (isset($_ENV['OS'])) {
  5814. // Sometimes $_ENV['OS'] may not be present (bugs?)
  5815. $os = $_ENV['OS'];
  5816. } elseif (defined('PHP_OS')) {
  5817. // PHP_OS means on which OS PHP was compiled, this is why
  5818. // using PHP_OS is the last choice for detection.
  5819. $os = PHP_OS;
  5820. } else {
  5821. return false;
  5822. }
  5823. return strtolower(substr((string) $os, 0, 3)) == 'win';
  5824. }
  5825. /**
  5826. * This function informs whether the sent request is XMLHttpRequest.
  5827. */
  5828. function api_is_xml_http_request()
  5829. {
  5830. return isset($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest';
  5831. }
  5832. /**
  5833. * This wrapper function has been implemented for avoiding some known problems about the function getimagesize().
  5834. *
  5835. * @see http://php.net/manual/en/function.getimagesize.php
  5836. * @see http://www.dokeos.com/forum/viewtopic.php?t=12345
  5837. * @see http://www.dokeos.com/forum/viewtopic.php?t=16355
  5838. *
  5839. * @return int
  5840. */
  5841. function api_getimagesize($path)
  5842. {
  5843. $image = new Image($path);
  5844. return $image->get_image_size();
  5845. }
  5846. /**
  5847. * This function resizes an image, with preserving its proportions (or aspect ratio).
  5848. *
  5849. * @author Ivan Tcholakov, MAY-2009.
  5850. *
  5851. * @param int $image System path or URL of the image
  5852. * @param int $target_width Targeted width
  5853. * @param int $target_height Targeted height
  5854. *
  5855. * @return array Calculated new width and height
  5856. */
  5857. function api_resize_image($image, $target_width, $target_height)
  5858. {
  5859. $image_properties = api_getimagesize($image);
  5860. return api_calculate_image_size(
  5861. $image_properties['width'],
  5862. $image_properties['height'],
  5863. $target_width,
  5864. $target_height
  5865. );
  5866. }
  5867. /**
  5868. * This function calculates new image size, with preserving image's proportions (or aspect ratio).
  5869. *
  5870. * @author Ivan Tcholakov, MAY-2009.
  5871. * @author The initial idea has been taken from code by Patrick Cool, MAY-2004.
  5872. *
  5873. * @param int $image_width Initial width
  5874. * @param int $image_height Initial height
  5875. * @param int $target_width Targeted width
  5876. * @param int $target_height Targeted height
  5877. *
  5878. * @return array Calculated new width and height
  5879. */
  5880. function api_calculate_image_size(
  5881. $image_width,
  5882. $image_height,
  5883. $target_width,
  5884. $target_height
  5885. ) {
  5886. // Only maths is here.
  5887. $result = ['width' => $image_width, 'height' => $image_height];
  5888. if ($image_width <= 0 || $image_height <= 0) {
  5889. return $result;
  5890. }
  5891. $resize_factor_width = $target_width / $image_width;
  5892. $resize_factor_height = $target_height / $image_height;
  5893. $delta_width = $target_width - $image_width * $resize_factor_height;
  5894. $delta_height = $target_height - $image_height * $resize_factor_width;
  5895. if ($delta_width > $delta_height) {
  5896. $result['width'] = ceil($image_width * $resize_factor_height);
  5897. $result['height'] = ceil($image_height * $resize_factor_height);
  5898. } elseif ($delta_width < $delta_height) {
  5899. $result['width'] = ceil($image_width * $resize_factor_width);
  5900. $result['height'] = ceil($image_height * $resize_factor_width);
  5901. } else {
  5902. $result['width'] = ceil($target_width);
  5903. $result['height'] = ceil($target_height);
  5904. }
  5905. return $result;
  5906. }
  5907. /**
  5908. * Returns a list of Chamilo's tools or
  5909. * checks whether a given identificator is a valid Chamilo's tool.
  5910. *
  5911. * @author Isaac flores paz
  5912. *
  5913. * @param string The tool name to filter
  5914. *
  5915. * @return mixed Filtered string or array
  5916. */
  5917. function api_get_tools_lists($my_tool = null)
  5918. {
  5919. $tools_list = [
  5920. TOOL_DOCUMENT,
  5921. TOOL_THUMBNAIL,
  5922. TOOL_HOTPOTATOES,
  5923. TOOL_CALENDAR_EVENT,
  5924. TOOL_LINK,
  5925. TOOL_COURSE_DESCRIPTION,
  5926. TOOL_SEARCH,
  5927. TOOL_LEARNPATH,
  5928. TOOL_ANNOUNCEMENT,
  5929. TOOL_FORUM,
  5930. TOOL_THREAD,
  5931. TOOL_POST,
  5932. TOOL_DROPBOX,
  5933. TOOL_QUIZ,
  5934. TOOL_USER,
  5935. TOOL_GROUP,
  5936. TOOL_BLOGS,
  5937. TOOL_CHAT,
  5938. TOOL_STUDENTPUBLICATION,
  5939. TOOL_TRACKING,
  5940. TOOL_HOMEPAGE_LINK,
  5941. TOOL_COURSE_SETTING,
  5942. TOOL_BACKUP,
  5943. TOOL_COPY_COURSE_CONTENT,
  5944. TOOL_RECYCLE_COURSE,
  5945. TOOL_COURSE_HOMEPAGE,
  5946. TOOL_COURSE_RIGHTS_OVERVIEW,
  5947. TOOL_UPLOAD,
  5948. TOOL_COURSE_MAINTENANCE,
  5949. TOOL_SURVEY,
  5950. TOOL_WIKI,
  5951. TOOL_GLOSSARY,
  5952. TOOL_GRADEBOOK,
  5953. TOOL_NOTEBOOK,
  5954. TOOL_ATTENDANCE,
  5955. TOOL_COURSE_PROGRESS,
  5956. ];
  5957. if (empty($my_tool)) {
  5958. return $tools_list;
  5959. }
  5960. return in_array($my_tool, $tools_list) ? $my_tool : '';
  5961. }
  5962. /**
  5963. * Checks whether we already approved the last version term and condition.
  5964. *
  5965. * @param int user id
  5966. *
  5967. * @return bool true if we pass false otherwise
  5968. */
  5969. function api_check_term_condition($userId)
  5970. {
  5971. if (api_get_setting('allow_terms_conditions') === 'true') {
  5972. // Check if exists terms and conditions
  5973. if (LegalManager::count() == 0) {
  5974. return true;
  5975. }
  5976. $extraFieldValue = new ExtraFieldValue('user');
  5977. $data = $extraFieldValue->get_values_by_handler_and_field_variable(
  5978. $userId,
  5979. 'legal_accept'
  5980. );
  5981. if (!empty($data) && isset($data['value']) && !empty($data['value'])) {
  5982. $result = $data['value'];
  5983. $user_conditions = explode(':', $result);
  5984. $version = $user_conditions[0];
  5985. $langId = $user_conditions[1];
  5986. $realVersion = LegalManager::get_last_version($langId);
  5987. return $version >= $realVersion;
  5988. }
  5989. return false;
  5990. }
  5991. return false;
  5992. }
  5993. /**
  5994. * Gets all information of a tool into course.
  5995. *
  5996. * @param int The tool id
  5997. *
  5998. * @return array
  5999. */
  6000. function api_get_tool_information_by_name($name)
  6001. {
  6002. $t_tool = Database::get_course_table(TABLE_TOOL_LIST);
  6003. $course_id = api_get_course_int_id();
  6004. $sql = "SELECT * FROM $t_tool
  6005. WHERE c_id = $course_id AND name = '".Database::escape_string($name)."' ";
  6006. $rs = Database::query($sql);
  6007. return Database::fetch_array($rs, 'ASSOC');
  6008. }
  6009. /**
  6010. * Function used to protect a "global" admin script.
  6011. * The function blocks access when the user has no global platform admin rights.
  6012. * Global admins are the admins that are registered in the main.admin table
  6013. * AND the users who have access to the "principal" portal.
  6014. * That means that there is a record in the main.access_url_rel_user table
  6015. * with his user id and the access_url_id=1.
  6016. *
  6017. * @author Julio Montoya
  6018. *
  6019. * @param int $user_id
  6020. *
  6021. * @return bool
  6022. */
  6023. function api_is_global_platform_admin($user_id = null)
  6024. {
  6025. $user_id = (int) $user_id;
  6026. if (empty($user_id)) {
  6027. $user_id = api_get_user_id();
  6028. }
  6029. if (api_is_platform_admin_by_id($user_id)) {
  6030. $urlList = api_get_access_url_from_user($user_id);
  6031. // The admin is registered in the first "main" site with access_url_id = 1
  6032. if (in_array(1, $urlList)) {
  6033. return true;
  6034. } else {
  6035. return false;
  6036. }
  6037. }
  6038. return false;
  6039. }
  6040. /**
  6041. * @param int $admin_id_to_check
  6042. * @param int $my_user_id
  6043. * @param bool $allow_session_admin
  6044. *
  6045. * @return bool
  6046. */
  6047. function api_global_admin_can_edit_admin(
  6048. $admin_id_to_check,
  6049. $my_user_id = null,
  6050. $allow_session_admin = false
  6051. ) {
  6052. if (empty($my_user_id)) {
  6053. $my_user_id = api_get_user_id();
  6054. }
  6055. $iam_a_global_admin = api_is_global_platform_admin($my_user_id);
  6056. $user_is_global_admin = api_is_global_platform_admin($admin_id_to_check);
  6057. if ($iam_a_global_admin) {
  6058. // Global admin can edit everything
  6059. return true;
  6060. } else {
  6061. // If i'm a simple admin
  6062. $is_platform_admin = api_is_platform_admin_by_id($my_user_id);
  6063. if ($allow_session_admin) {
  6064. $is_platform_admin = api_is_platform_admin_by_id($my_user_id) || (api_get_user_status($my_user_id) == SESSIONADMIN);
  6065. }
  6066. if ($is_platform_admin) {
  6067. if ($user_is_global_admin) {
  6068. return false;
  6069. } else {
  6070. return true;
  6071. }
  6072. } else {
  6073. return false;
  6074. }
  6075. }
  6076. }
  6077. /**
  6078. * @param int $admin_id_to_check
  6079. * @param int $my_user_id
  6080. * @param bool $allow_session_admin
  6081. *
  6082. * @return bool|null
  6083. */
  6084. function api_protect_super_admin($admin_id_to_check, $my_user_id = null, $allow_session_admin = false)
  6085. {
  6086. if (api_global_admin_can_edit_admin($admin_id_to_check, $my_user_id, $allow_session_admin)) {
  6087. return true;
  6088. } else {
  6089. api_not_allowed();
  6090. }
  6091. }
  6092. /**
  6093. * Function used to protect a global admin script.
  6094. * The function blocks access when the user has no global platform admin rights.
  6095. * See also the api_is_global_platform_admin() function wich defines who's a "global" admin.
  6096. *
  6097. * @author Julio Montoya
  6098. */
  6099. function api_protect_global_admin_script()
  6100. {
  6101. if (!api_is_global_platform_admin()) {
  6102. api_not_allowed();
  6103. return false;
  6104. }
  6105. return true;
  6106. }
  6107. /**
  6108. * Get active template.
  6109. *
  6110. * @param string theme type (optional: default)
  6111. * @param string path absolute(abs) or relative(rel) (optional:rel)
  6112. *
  6113. * @return string actived template path
  6114. */
  6115. function api_get_template($path_type = 'rel')
  6116. {
  6117. $path_types = ['rel', 'abs'];
  6118. $template_path = '';
  6119. if (in_array($path_type, $path_types)) {
  6120. if ($path_type == 'rel') {
  6121. $template_path = api_get_path(SYS_TEMPLATE_PATH);
  6122. } else {
  6123. $template_path = api_get_path(WEB_TEMPLATE_PATH);
  6124. }
  6125. }
  6126. $actived_theme = 'default';
  6127. if (api_get_setting('active_template')) {
  6128. $actived_theme = api_get_setting('active_template');
  6129. }
  6130. $actived_theme_path = $template_path.$actived_theme.DIRECTORY_SEPARATOR;
  6131. return $actived_theme_path;
  6132. }
  6133. /**
  6134. * Check browser support for specific file types or features
  6135. * This function checks if the user's browser supports a file format or given
  6136. * feature, or returns the current browser and major version when
  6137. * $format=check_browser. Only a limited number of formats and features are
  6138. * checked by this method. Make sure you check its definition first.
  6139. *
  6140. * @param string $format Can be a file format (extension like svg, webm, ...) or a feature (like autocapitalize, ...)
  6141. *
  6142. * @return bool or return text array if $format=check_browser
  6143. *
  6144. * @author Juan Carlos Raña Trabado
  6145. */
  6146. function api_browser_support($format = '')
  6147. {
  6148. $browser = new Browser();
  6149. $current_browser = $browser->getBrowser();
  6150. $a_versiontemp = explode('.', $browser->getVersion());
  6151. $current_majorver = $a_versiontemp[0];
  6152. static $result;
  6153. if (isset($result[$format])) {
  6154. return $result[$format];
  6155. }
  6156. // Native svg support
  6157. if ($format == 'svg') {
  6158. if (($current_browser == 'Internet Explorer' && $current_majorver >= 9) ||
  6159. ($current_browser == 'Firefox' && $current_majorver > 1) ||
  6160. ($current_browser == 'Safari' && $current_majorver >= 4) ||
  6161. ($current_browser == 'Chrome' && $current_majorver >= 1) ||
  6162. ($current_browser == 'Opera' && $current_majorver >= 9)
  6163. ) {
  6164. $result[$format] = true;
  6165. return true;
  6166. } else {
  6167. $result[$format] = false;
  6168. return false;
  6169. }
  6170. } elseif ($format == 'pdf') {
  6171. // native pdf support
  6172. if ($current_browser == 'Chrome' && $current_majorver >= 6) {
  6173. $result[$format] = true;
  6174. return true;
  6175. } else {
  6176. $result[$format] = false;
  6177. return false;
  6178. }
  6179. } elseif ($format == 'tif' || $format == 'tiff') {
  6180. //native tif support
  6181. if ($current_browser == 'Safari' && $current_majorver >= 5) {
  6182. $result[$format] = true;
  6183. return true;
  6184. } else {
  6185. $result[$format] = false;
  6186. return false;
  6187. }
  6188. } elseif ($format == 'ogg' || $format == 'ogx' || $format == 'ogv' || $format == 'oga') {
  6189. //native ogg, ogv,oga support
  6190. if (($current_browser == 'Firefox' && $current_majorver >= 3) ||
  6191. ($current_browser == 'Chrome' && $current_majorver >= 3) ||
  6192. ($current_browser == 'Opera' && $current_majorver >= 9)) {
  6193. $result[$format] = true;
  6194. return true;
  6195. } else {
  6196. $result[$format] = false;
  6197. return false;
  6198. }
  6199. } elseif ($format == 'mpg' || $format == 'mpeg') {
  6200. //native mpg support
  6201. if (($current_browser == 'Safari' && $current_majorver >= 5)) {
  6202. $result[$format] = true;
  6203. return true;
  6204. } else {
  6205. $result[$format] = false;
  6206. return false;
  6207. }
  6208. } elseif ($format == 'mp4') {
  6209. //native mp4 support (TODO: Android, iPhone)
  6210. if ($current_browser == 'Android' || $current_browser == 'iPhone') {
  6211. $result[$format] = true;
  6212. return true;
  6213. } else {
  6214. $result[$format] = false;
  6215. return false;
  6216. }
  6217. } elseif ($format == 'mov') {
  6218. //native mov support( TODO:check iPhone)
  6219. if ($current_browser == 'Safari' && $current_majorver >= 5 || $current_browser == 'iPhone') {
  6220. $result[$format] = true;
  6221. return true;
  6222. } else {
  6223. $result[$format] = false;
  6224. return false;
  6225. }
  6226. } elseif ($format == 'avi') {
  6227. //native avi support
  6228. if ($current_browser == 'Safari' && $current_majorver >= 5) {
  6229. $result[$format] = true;
  6230. return true;
  6231. } else {
  6232. $result[$format] = false;
  6233. return false;
  6234. }
  6235. } elseif ($format == 'wmv') {
  6236. //native wmv support
  6237. if ($current_browser == 'Firefox' && $current_majorver >= 4) {
  6238. $result[$format] = true;
  6239. return true;
  6240. } else {
  6241. $result[$format] = false;
  6242. return false;
  6243. }
  6244. } elseif ($format == 'webm') {
  6245. //native webm support (TODO:check IE9, Chrome9, Android)
  6246. if (($current_browser == 'Firefox' && $current_majorver >= 4) ||
  6247. ($current_browser == 'Opera' && $current_majorver >= 9) ||
  6248. ($current_browser == 'Internet Explorer' && $current_majorver >= 9) ||
  6249. ($current_browser == 'Chrome' && $current_majorver >= 9) ||
  6250. $current_browser == 'Android'
  6251. ) {
  6252. $result[$format] = true;
  6253. return true;
  6254. } else {
  6255. $result[$format] = false;
  6256. return false;
  6257. }
  6258. } elseif ($format == 'wav') {
  6259. //native wav support (only some codecs !)
  6260. if (($current_browser == 'Firefox' && $current_majorver >= 4) ||
  6261. ($current_browser == 'Safari' && $current_majorver >= 5) ||
  6262. ($current_browser == 'Opera' && $current_majorver >= 9) ||
  6263. ($current_browser == 'Internet Explorer' && $current_majorver >= 9) ||
  6264. ($current_browser == 'Chrome' && $current_majorver > 9) ||
  6265. $current_browser == 'Android' ||
  6266. $current_browser == 'iPhone'
  6267. ) {
  6268. $result[$format] = true;
  6269. return true;
  6270. } else {
  6271. $result[$format] = false;
  6272. return false;
  6273. }
  6274. } elseif ($format == 'mid' || $format == 'kar') {
  6275. //native midi support (TODO:check Android)
  6276. if ($current_browser == 'Opera' && $current_majorver >= 9 || $current_browser == 'Android') {
  6277. $result[$format] = true;
  6278. return true;
  6279. } else {
  6280. $result[$format] = false;
  6281. return false;
  6282. }
  6283. } elseif ($format == 'wma') {
  6284. //native wma support
  6285. if ($current_browser == 'Firefox' && $current_majorver >= 4) {
  6286. $result[$format] = true;
  6287. return true;
  6288. } else {
  6289. $result[$format] = false;
  6290. return false;
  6291. }
  6292. } elseif ($format == 'au') {
  6293. //native au support
  6294. if ($current_browser == 'Safari' && $current_majorver >= 5) {
  6295. $result[$format] = true;
  6296. return true;
  6297. } else {
  6298. $result[$format] = false;
  6299. return false;
  6300. }
  6301. } elseif ($format == 'mp3') {
  6302. //native mp3 support (TODO:check Android, iPhone)
  6303. if (($current_browser == 'Safari' && $current_majorver >= 5) ||
  6304. ($current_browser == 'Chrome' && $current_majorver >= 6) ||
  6305. ($current_browser == 'Internet Explorer' && $current_majorver >= 9) ||
  6306. $current_browser == 'Android' ||
  6307. $current_browser == 'iPhone' ||
  6308. $current_browser == 'Firefox'
  6309. ) {
  6310. $result[$format] = true;
  6311. return true;
  6312. } else {
  6313. $result[$format] = false;
  6314. return false;
  6315. }
  6316. } elseif ($format == 'autocapitalize') {
  6317. // Help avoiding showing the autocapitalize option if the browser doesn't
  6318. // support it: this attribute is against the HTML5 standard
  6319. if ($current_browser == 'Safari' || $current_browser == 'iPhone') {
  6320. return true;
  6321. } else {
  6322. return false;
  6323. }
  6324. } elseif ($format == "check_browser") {
  6325. $array_check_browser = [$current_browser, $current_majorver];
  6326. return $array_check_browser;
  6327. } else {
  6328. $result[$format] = false;
  6329. return false;
  6330. }
  6331. }
  6332. /**
  6333. * This function checks if exist path and file browscap.ini
  6334. * In order for this to work, your browscap configuration setting in php.ini
  6335. * must point to the correct location of the browscap.ini file on your system
  6336. * http://php.net/manual/en/function.get-browser.php.
  6337. *
  6338. * @return bool
  6339. *
  6340. * @author Juan Carlos Raña Trabado
  6341. */
  6342. function api_check_browscap()
  6343. {
  6344. $setting = ini_get('browscap');
  6345. if ($setting) {
  6346. $browser = get_browser($_SERVER['HTTP_USER_AGENT'], true);
  6347. if (strpos($setting, 'browscap.ini') && !empty($browser)) {
  6348. return true;
  6349. }
  6350. }
  6351. return false;
  6352. }
  6353. /**
  6354. * Returns the <script> HTML tag.
  6355. */
  6356. function api_get_js($file)
  6357. {
  6358. return '<script type="text/javascript" src="'.api_get_path(WEB_LIBRARY_PATH).'javascript/'.$file.'"></script>'."\n";
  6359. }
  6360. /**
  6361. * Returns the <script> HTML tag.
  6362. *
  6363. * @return string
  6364. */
  6365. function api_get_asset($file)
  6366. {
  6367. return '<script type="text/javascript" src="'.api_get_path(WEB_PUBLIC_PATH).'assets/'.$file.'"></script>'."\n";
  6368. }
  6369. /**
  6370. * Returns the <script> HTML tag.
  6371. *
  6372. * @param string $file
  6373. * @param string $media
  6374. *
  6375. * @return string
  6376. */
  6377. function api_get_css_asset($file, $media = 'screen')
  6378. {
  6379. return '<link href="'.api_get_path(WEB_PUBLIC_PATH).'assets/'.$file.'" rel="stylesheet" media="'.$media.'" type="text/css" />'."\n";
  6380. }
  6381. /**
  6382. * Returns the <link> HTML tag.
  6383. *
  6384. * @param string $file
  6385. * @param string $media
  6386. */
  6387. function api_get_css($file, $media = 'screen')
  6388. {
  6389. return '<link href="'.$file.'" rel="stylesheet" media="'.$media.'" type="text/css" />'."\n";
  6390. }
  6391. /**
  6392. * Returns the js header to include the jquery library.
  6393. */
  6394. function api_get_jquery_js()
  6395. {
  6396. return api_get_asset('jquery/dist/jquery.min.js');
  6397. }
  6398. /**
  6399. * Returns the jquery path.
  6400. *
  6401. * @return string
  6402. */
  6403. function api_get_jquery_web_path()
  6404. {
  6405. return api_get_path(WEB_PUBLIC_PATH).'assets/jquery/dist/jquery.min.js';
  6406. }
  6407. /**
  6408. * @return string
  6409. */
  6410. function api_get_jquery_ui_js_web_path()
  6411. {
  6412. return api_get_path(WEB_PUBLIC_PATH).'assets/jquery-ui/jquery-ui.min.js';
  6413. }
  6414. /**
  6415. * @return string
  6416. */
  6417. function api_get_jquery_ui_css_web_path()
  6418. {
  6419. return api_get_path(WEB_PUBLIC_PATH).'assets/jquery-ui/themes/smoothness/jquery-ui.min.css';
  6420. }
  6421. /**
  6422. * Returns the jquery-ui library js headers.
  6423. *
  6424. * @param bool add the jqgrid library
  6425. *
  6426. * @return string html tags
  6427. */
  6428. function api_get_jquery_ui_js($include_jqgrid = false)
  6429. {
  6430. $libraries = [];
  6431. if ($include_jqgrid) {
  6432. $libraries[] = 'jqgrid';
  6433. }
  6434. return api_get_jquery_libraries_js($libraries);
  6435. }
  6436. function api_get_jqgrid_js()
  6437. {
  6438. return api_get_jquery_libraries_js(['jqgrid']);
  6439. }
  6440. /**
  6441. * Returns the jquery library js and css headers.
  6442. *
  6443. * @param array list of jquery libraries supported jquery-ui, jqgrid
  6444. * @param bool add the jquery library
  6445. *
  6446. * @return string html tags
  6447. */
  6448. function api_get_jquery_libraries_js($libraries)
  6449. {
  6450. $js = '';
  6451. $js_path = api_get_path(WEB_LIBRARY_PATH).'javascript/';
  6452. //jqgrid js and css
  6453. if (in_array('jqgrid', $libraries)) {
  6454. $languaje = 'en';
  6455. $platform_isocode = strtolower(api_get_language_isocode());
  6456. //languages supported by jqgrid see files in main/inc/lib/javascript/jqgrid/js/i18n
  6457. $jqgrid_langs = [
  6458. 'bg', 'bg1251', 'cat', 'cn', 'cs', 'da', 'de', 'el', 'en', 'es', 'fa', 'fi', 'fr', 'gl', 'he', 'hu', 'is', 'it', 'ja', 'nl', 'no', 'pl', 'pt-br', 'pt', 'ro', 'ru', 'sk', 'sr', 'sv', 'tr', 'ua',
  6459. ];
  6460. if (in_array($platform_isocode, $jqgrid_langs)) {
  6461. $languaje = $platform_isocode;
  6462. }
  6463. //$js .= '<link rel="stylesheet" href="'.$js_path.'jqgrid/css/ui.jqgrid.css" type="text/css">';
  6464. $js .= api_get_css($js_path.'jqgrid/css/ui.jqgrid.css');
  6465. $js .= api_get_js('jqgrid/js/i18n/grid.locale-'.$languaje.'.js');
  6466. $js .= api_get_js('jqgrid/js/jquery.jqGrid.min.js');
  6467. }
  6468. //Document multiple upload funcionality
  6469. if (in_array('jquery-upload', $libraries)) {
  6470. $js .= api_get_asset('blueimp-load-image/js/load-image.all.min.js');
  6471. $js .= api_get_asset('blueimp-canvas-to-blob/js/canvas-to-blob.min.js');
  6472. $js .= api_get_asset('jquery-file-upload/js/jquery.iframe-transport.js');
  6473. $js .= api_get_asset('jquery-file-upload/js/jquery.fileupload.js');
  6474. $js .= api_get_asset('jquery-file-upload/js/jquery.fileupload-process.js');
  6475. $js .= api_get_asset('jquery-file-upload/js/jquery.fileupload-image.js');
  6476. $js .= api_get_asset('jquery-file-upload/js/jquery.fileupload-audio.js');
  6477. $js .= api_get_asset('jquery-file-upload/js/jquery.fileupload-video.js');
  6478. $js .= api_get_asset('jquery-file-upload/js/jquery.fileupload-validate.js');
  6479. $js .= api_get_css(api_get_path(WEB_PUBLIC_PATH).'assets/jquery-file-upload/css/jquery.fileupload.css');
  6480. $js .= api_get_css(api_get_path(WEB_PUBLIC_PATH).'assets/jquery-file-upload/css/jquery.fileupload-ui.css');
  6481. }
  6482. // jquery datepicker
  6483. if (in_array('datepicker', $libraries)) {
  6484. $languaje = 'en-GB';
  6485. $platform_isocode = strtolower(api_get_language_isocode());
  6486. // languages supported by jqgrid see files in main/inc/lib/javascript/jqgrid/js/i18n
  6487. $datapicker_langs = [
  6488. 'af', 'ar', 'ar-DZ', 'az', 'bg', 'bs', 'ca', 'cs', 'cy-GB', 'da', 'de', 'el', 'en-AU', 'en-GB', 'en-NZ', 'eo', 'es', 'et', 'eu', 'fa', 'fi', 'fo', 'fr', 'fr-CH', 'gl', 'he', 'hi', 'hr', 'hu', 'hy', 'id', 'is', 'it', 'ja', 'ka', 'kk', 'km', 'ko', 'lb', 'lt', 'lv', 'mk', 'ml', 'ms', 'nl', 'nl-BE', 'no', 'pl', 'pt', 'pt-BR', 'rm', 'ro', 'ru', 'sk', 'sl', 'sq', 'sr', 'sr-SR', 'sv', 'ta', 'th', 'tj', 'tr', 'uk', 'vi', 'zh-CN', 'zh-HK', 'zh-TW',
  6489. ];
  6490. if (in_array($platform_isocode, $datapicker_langs)) {
  6491. $languaje = $platform_isocode;
  6492. }
  6493. $js .= api_get_js('jquery-ui/jquery-ui-i18n.min.js');
  6494. $script = '<script>
  6495. $(function(){
  6496. $.datepicker.setDefaults($.datepicker.regional["'.$languaje.'"]);
  6497. $.datepicker.regional["local"] = $.datepicker.regional["'.$languaje.'"];
  6498. });
  6499. </script>
  6500. ';
  6501. $js .= $script;
  6502. }
  6503. return $js;
  6504. }
  6505. /**
  6506. * Returns the URL to the course or session, removing the complexity of the URL
  6507. * building piece by piece.
  6508. *
  6509. * This function relies on api_get_course_info()
  6510. *
  6511. * @param string $courseCode The course code - optional (takes it from context if not given)
  6512. * @param int $sessionId The session ID - optional (takes it from context if not given)
  6513. * @param int $groupId The group ID - optional (takes it from context if not given)
  6514. *
  6515. * @return string The URL to a course, a session, or empty string if nothing works e.g. https://localhost/courses/ABC/index.php?session_id=3&gidReq=1
  6516. *
  6517. * @author Julio Montoya <gugli100@gmail.com>
  6518. */
  6519. function api_get_course_url($courseCode = null, $sessionId = null, $groupId = null)
  6520. {
  6521. $courseDirectory = '';
  6522. $url = '';
  6523. // If courseCode not set, get context or []
  6524. if (empty($courseCode)) {
  6525. $courseInfo = api_get_course_info();
  6526. } else {
  6527. $courseInfo = api_get_course_info($courseCode);
  6528. }
  6529. // If course defined, get directory, otherwise keep empty string
  6530. if (!empty($courseInfo['directory'])) {
  6531. $courseDirectory = $courseInfo['directory'];
  6532. }
  6533. // If sessionId not set, get context or 0
  6534. if (empty($sessionId)) {
  6535. $sessionId = api_get_session_id();
  6536. }
  6537. // If groupId not set, get context or 0
  6538. if (empty($groupId)) {
  6539. $groupId = api_get_group_id();
  6540. }
  6541. // Build the URL
  6542. if (!empty($courseDirectory)) {
  6543. // directory not empty, so we do have a course
  6544. $url = api_get_path(WEB_COURSE_PATH).$courseDirectory.'/index.php?id_session='.$sessionId.'&gidReq='.$groupId;
  6545. } elseif (!empty($sessionId) && api_get_configuration_value('remove_session_url') !== true) {
  6546. // if the course was unset and the session was set, send directly to the session
  6547. $url = api_get_path(WEB_CODE_PATH).'session/index.php?session_id='.$sessionId;
  6548. }
  6549. // if not valid combination was found, return an empty string
  6550. return $url;
  6551. }
  6552. /**
  6553. * Check if the current portal has the $_configuration['multiple_access_urls'] parameter on.
  6554. *
  6555. * @return bool true if multi site is enabled
  6556. */
  6557. function api_get_multiple_access_url()
  6558. {
  6559. global $_configuration;
  6560. if (isset($_configuration['multiple_access_urls']) && $_configuration['multiple_access_urls']) {
  6561. return true;
  6562. }
  6563. return false;
  6564. }
  6565. /**
  6566. * @return bool
  6567. */
  6568. function api_is_multiple_url_enabled()
  6569. {
  6570. return api_get_multiple_access_url();
  6571. }
  6572. /**
  6573. * Returns a md5 unique id.
  6574. *
  6575. * @todo add more parameters
  6576. */
  6577. function api_get_unique_id()
  6578. {
  6579. $id = md5(time().uniqid().api_get_user_id().api_get_course_id().api_get_session_id());
  6580. return $id;
  6581. }
  6582. /**
  6583. * Get home path.
  6584. *
  6585. * @return string
  6586. */
  6587. function api_get_home_path()
  6588. {
  6589. // FIX : Start the routing determination from central path definition
  6590. $home = api_get_path(SYS_HOME_PATH);
  6591. if (api_get_multiple_access_url()) {
  6592. $access_url_id = api_get_current_access_url_id();
  6593. $url_info = api_get_access_url($access_url_id);
  6594. $url = api_remove_trailing_slash(preg_replace('/https?:\/\//i', '', $url_info['url']));
  6595. $clean_url = api_replace_dangerous_char($url);
  6596. $clean_url = str_replace('/', '-', $clean_url);
  6597. $clean_url .= '/';
  6598. if ($clean_url != 'localhost/') {
  6599. // means that the multiple URL was not well configured we don't rename the $home variable
  6600. return "{$home}{$clean_url}";
  6601. }
  6602. }
  6603. return $home;
  6604. }
  6605. /**
  6606. * @param int Course id
  6607. * @param int tool id: TOOL_QUIZ, TOOL_FORUM, TOOL_STUDENTPUBLICATION, TOOL_LEARNPATH
  6608. * @param int the item id (tool id, exercise id, lp id)
  6609. *
  6610. * @return bool
  6611. */
  6612. function api_resource_is_locked_by_gradebook($item_id, $link_type, $course_code = null)
  6613. {
  6614. if (api_is_platform_admin()) {
  6615. return false;
  6616. }
  6617. if (api_get_setting('gradebook_locking_enabled') == 'true') {
  6618. if (empty($course_code)) {
  6619. $course_code = api_get_course_id();
  6620. }
  6621. $table = Database::get_main_table(TABLE_MAIN_GRADEBOOK_LINK);
  6622. $item_id = intval($item_id);
  6623. $link_type = intval($link_type);
  6624. $course_code = Database::escape_string($course_code);
  6625. $sql = "SELECT locked FROM $table
  6626. WHERE locked = 1 AND ref_id = $item_id AND type = $link_type AND course_code = '$course_code' ";
  6627. $result = Database::query($sql);
  6628. if (Database::num_rows($result)) {
  6629. return true;
  6630. }
  6631. }
  6632. return false;
  6633. }
  6634. /**
  6635. * Blocks a page if the item was added in a gradebook.
  6636. *
  6637. * @param int exercise id, work id, thread id,
  6638. * @param int LINK_EXERCISE, LINK_STUDENTPUBLICATION, LINK_LEARNPATH LINK_FORUM_THREAD, LINK_ATTENDANCE
  6639. * see gradebook/lib/be/linkfactory
  6640. * @param string course code
  6641. *
  6642. * @return false|null
  6643. */
  6644. function api_block_course_item_locked_by_gradebook($item_id, $link_type, $course_code = null)
  6645. {
  6646. if (api_is_platform_admin()) {
  6647. return false;
  6648. }
  6649. if (api_resource_is_locked_by_gradebook($item_id, $link_type, $course_code)) {
  6650. $message = Display::return_message(get_lang('ResourceLockedByGradebook'), 'warning');
  6651. api_not_allowed(true, $message);
  6652. }
  6653. }
  6654. /**
  6655. * Checks the PHP version installed is enough to run Chamilo.
  6656. *
  6657. * @param string Include path (used to load the error page)
  6658. */
  6659. function api_check_php_version($my_inc_path = null)
  6660. {
  6661. if (!function_exists('version_compare') || version_compare(phpversion(), REQUIRED_PHP_VERSION, '<')) {
  6662. $global_error_code = 1;
  6663. // Incorrect PHP version
  6664. $global_page = $my_inc_path.'global_error_message.inc.php';
  6665. if (file_exists($global_page)) {
  6666. require $global_page;
  6667. }
  6668. exit;
  6669. }
  6670. }
  6671. /**
  6672. * Checks whether the Archive directory is present and writeable. If not,
  6673. * prints a warning message.
  6674. */
  6675. function api_check_archive_dir()
  6676. {
  6677. if (is_dir(api_get_path(SYS_ARCHIVE_PATH)) && !is_writable(api_get_path(SYS_ARCHIVE_PATH))) {
  6678. $message = Display::return_message(get_lang('ArchivesDirectoryNotWriteableContactAdmin'), 'warning');
  6679. api_not_allowed(true, $message);
  6680. }
  6681. }
  6682. /**
  6683. * Returns an array of global configuration settings which should be ignored
  6684. * when printing the configuration settings screens.
  6685. *
  6686. * @return array Array of strings, each identifying one of the excluded settings
  6687. */
  6688. function api_get_locked_settings()
  6689. {
  6690. return [
  6691. 'server_type',
  6692. 'permanently_remove_deleted_files',
  6693. 'account_valid_duration',
  6694. 'service_ppt2lp',
  6695. 'wcag_anysurfer_public_pages',
  6696. 'upload_extensions_list_type',
  6697. 'upload_extensions_blacklist',
  6698. 'upload_extensions_whitelist',
  6699. 'upload_extensions_skip',
  6700. 'upload_extensions_replace_by',
  6701. 'hide_dltt_markup',
  6702. 'split_users_upload_directory',
  6703. 'permissions_for_new_directories',
  6704. 'permissions_for_new_files',
  6705. 'platform_charset',
  6706. 'ldap_description',
  6707. 'cas_activate',
  6708. 'cas_server',
  6709. 'cas_server_uri',
  6710. 'cas_port',
  6711. 'cas_protocol',
  6712. 'cas_add_user_activate',
  6713. 'update_user_info_cas_with_ldap',
  6714. 'languagePriority1',
  6715. 'languagePriority2',
  6716. 'languagePriority3',
  6717. 'languagePriority4',
  6718. 'login_is_email',
  6719. 'chamilo_database_version',
  6720. ];
  6721. }
  6722. /**
  6723. * Checks if the user is corrently logged in. Returns the user ID if he is, or
  6724. * false if he isn't. If the user ID is given and is an integer, then the same
  6725. * ID is simply returned.
  6726. *
  6727. * @param int User ID
  6728. *
  6729. * @return bool Integer User ID is logged in, or false otherwise
  6730. */
  6731. function api_user_is_login($user_id = null)
  6732. {
  6733. $user_id = empty($user_id) ? api_get_user_id() : (int) $user_id;
  6734. return $user_id && !api_is_anonymous();
  6735. }
  6736. /**
  6737. * Guess the real ip for register in the database, even in reverse proxy cases.
  6738. * To be recognized, the IP has to be found in either $_SERVER['REMOTE_ADDR'] or
  6739. * in $_SERVER['HTTP_X_FORWARDED_FOR'], which is in common use with rproxies.
  6740. * Note: the result of this function is not SQL-safe. Please escape it before
  6741. * inserting in a database.
  6742. *
  6743. * @return string the user's real ip (unsafe - escape it before inserting to db)
  6744. *
  6745. * @author Jorge Frisancho Jibaja <jrfdeft@gmail.com>, USIL - Some changes to allow the use of real IP using reverse proxy
  6746. *
  6747. * @version CEV CHANGE 24APR2012
  6748. */
  6749. function api_get_real_ip()
  6750. {
  6751. // Guess the IP if behind a reverse proxy
  6752. global $debug;
  6753. $ip = trim($_SERVER['REMOTE_ADDR']);
  6754. if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
  6755. if (preg_match('/,/', $_SERVER['HTTP_X_FORWARDED_FOR'])) {
  6756. @list($ip1, $ip2) = @explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
  6757. } else {
  6758. $ip1 = $_SERVER['HTTP_X_FORWARDED_FOR'];
  6759. }
  6760. $ip = trim($ip1);
  6761. }
  6762. if (!empty($debug)) {
  6763. error_log('Real IP: '.$ip);
  6764. }
  6765. return $ip;
  6766. }
  6767. /**
  6768. * Checks whether an IP is included inside an IP range.
  6769. *
  6770. * @param string IP address
  6771. * @param string IP range
  6772. * @param string $ip
  6773. *
  6774. * @return bool True if IP is in the range, false otherwise
  6775. *
  6776. * @author claudiu at cnixs dot com on http://www.php.net/manual/fr/ref.network.php#55230
  6777. * @author Yannick Warnier for improvements and managment of multiple ranges
  6778. *
  6779. * @todo check for IPv6 support
  6780. */
  6781. function api_check_ip_in_range($ip, $range)
  6782. {
  6783. if (empty($ip) or empty($range)) {
  6784. return false;
  6785. }
  6786. $ip_ip = ip2long($ip);
  6787. // divide range param into array of elements
  6788. if (strpos($range, ',') !== false) {
  6789. $ranges = explode(',', $range);
  6790. } else {
  6791. $ranges = [$range];
  6792. }
  6793. foreach ($ranges as $range) {
  6794. $range = trim($range);
  6795. if (empty($range)) {
  6796. continue;
  6797. }
  6798. if (strpos($range, '/') === false) {
  6799. if (strcmp($ip, $range) === 0) {
  6800. return true; // there is a direct IP match, return OK
  6801. }
  6802. continue; //otherwise, get to the next range
  6803. }
  6804. // the range contains a "/", so analyse completely
  6805. list($net, $mask) = explode("/", $range);
  6806. $ip_net = ip2long($net);
  6807. // mask binary magic
  6808. $ip_mask = ~((1 << (32 - $mask)) - 1);
  6809. $ip_ip_net = $ip_ip & $ip_mask;
  6810. if ($ip_ip_net == $ip_net) {
  6811. return true;
  6812. }
  6813. }
  6814. return false;
  6815. }
  6816. function api_check_user_access_to_legal($course_visibility)
  6817. {
  6818. $course_visibility_list = [COURSE_VISIBILITY_OPEN_WORLD, COURSE_VISIBILITY_OPEN_PLATFORM];
  6819. return in_array($course_visibility, $course_visibility_list) || api_is_drh();
  6820. }
  6821. /**
  6822. * Checks if the global chat is enabled or not.
  6823. *
  6824. * @return bool
  6825. */
  6826. function api_is_global_chat_enabled()
  6827. {
  6828. return
  6829. !api_is_anonymous() &&
  6830. api_get_setting('allow_global_chat') === 'true' &&
  6831. api_get_setting('allow_social_tool') === 'true';
  6832. }
  6833. /**
  6834. * @todo Fix tool_visible_by_default_at_creation labels
  6835. *
  6836. * @param int $item_id
  6837. * @param int $tool_id
  6838. * @param int $group_id id
  6839. * @param array $courseInfo
  6840. * @param int $sessionId
  6841. * @param int $userId
  6842. */
  6843. function api_set_default_visibility(
  6844. $item_id,
  6845. $tool_id,
  6846. $group_id = 0,
  6847. $courseInfo = [],
  6848. $sessionId = 0,
  6849. $userId = 0
  6850. ) {
  6851. $courseInfo = empty($courseInfo) ? api_get_course_info() : $courseInfo;
  6852. $courseId = $courseInfo['real_id'];
  6853. $courseCode = $courseInfo['code'];
  6854. $sessionId = empty($sessionId) ? api_get_session_id() : $sessionId;
  6855. $userId = empty($userId) ? api_get_user_id() : $userId;
  6856. // if group is null force group_id = 0, this force is needed to create a LP folder with group = 0
  6857. if (is_null($group_id)) {
  6858. $group_id = 0;
  6859. } else {
  6860. $group_id = empty($group_id) ? api_get_group_id() : $group_id;
  6861. }
  6862. $groupInfo = [];
  6863. if (!empty($group_id)) {
  6864. $groupInfo = GroupManager::get_group_properties($group_id);
  6865. }
  6866. $original_tool_id = $tool_id;
  6867. switch ($tool_id) {
  6868. case TOOL_LINK:
  6869. case TOOL_LINK_CATEGORY:
  6870. $tool_id = 'links';
  6871. break;
  6872. case TOOL_DOCUMENT:
  6873. $tool_id = 'documents';
  6874. break;
  6875. case TOOL_LEARNPATH:
  6876. $tool_id = 'learning';
  6877. break;
  6878. case TOOL_ANNOUNCEMENT:
  6879. $tool_id = 'announcements';
  6880. break;
  6881. case TOOL_FORUM:
  6882. case TOOL_FORUM_CATEGORY:
  6883. case TOOL_FORUM_THREAD:
  6884. $tool_id = 'forums';
  6885. break;
  6886. case TOOL_QUIZ:
  6887. $tool_id = 'quiz';
  6888. break;
  6889. }
  6890. $setting = api_get_setting('tool_visible_by_default_at_creation');
  6891. if (isset($setting[$tool_id])) {
  6892. $visibility = 'invisible';
  6893. if ($setting[$tool_id] == 'true') {
  6894. $visibility = 'visible';
  6895. }
  6896. // Read the portal and course default visibility
  6897. if ($tool_id == 'documents') {
  6898. $visibility = DocumentManager::getDocumentDefaultVisibility($courseCode);
  6899. }
  6900. api_item_property_update(
  6901. $courseInfo,
  6902. $original_tool_id,
  6903. $item_id,
  6904. $visibility,
  6905. $userId,
  6906. $groupInfo,
  6907. null,
  6908. null,
  6909. null,
  6910. $sessionId
  6911. );
  6912. // Fixes default visibility for tests
  6913. switch ($original_tool_id) {
  6914. case TOOL_QUIZ:
  6915. if (empty($sessionId)) {
  6916. $objExerciseTmp = new Exercise($courseId);
  6917. $objExerciseTmp->read($item_id);
  6918. if ($visibility == 'visible') {
  6919. $objExerciseTmp->enable();
  6920. $objExerciseTmp->save();
  6921. } else {
  6922. $objExerciseTmp->disable();
  6923. $objExerciseTmp->save();
  6924. }
  6925. }
  6926. break;
  6927. }
  6928. }
  6929. }
  6930. /**
  6931. * @return string
  6932. */
  6933. function api_get_security_key()
  6934. {
  6935. return api_get_configuration_value('security_key');
  6936. }
  6937. /**
  6938. * @param int $user_id
  6939. * @param int $courseId
  6940. * @param int $session_id
  6941. *
  6942. * @return array
  6943. */
  6944. function api_detect_user_roles($user_id, $courseId, $session_id = 0)
  6945. {
  6946. $user_roles = [];
  6947. $courseInfo = api_get_course_info_by_id($courseId);
  6948. $course_code = $courseInfo['code'];
  6949. $url_id = api_get_current_access_url_id();
  6950. if (api_is_platform_admin_by_id($user_id, $url_id)) {
  6951. $user_roles[] = PLATFORM_ADMIN;
  6952. }
  6953. /*if (api_is_drh()) {
  6954. $user_roles[] = DRH;
  6955. }*/
  6956. if (!empty($session_id)) {
  6957. if (SessionManager::user_is_general_coach($user_id, $session_id)) {
  6958. $user_roles[] = SESSION_GENERAL_COACH;
  6959. }
  6960. }
  6961. if (!empty($course_code)) {
  6962. if (empty($session_id)) {
  6963. if (CourseManager::is_course_teacher($user_id, $course_code)) {
  6964. $user_roles[] = COURSEMANAGER;
  6965. }
  6966. if (CourseManager::get_tutor_in_course_status($user_id, $courseInfo['real_id'])) {
  6967. $user_roles[] = COURSE_TUTOR;
  6968. }
  6969. if (CourseManager::is_user_subscribed_in_course($user_id, $course_code)) {
  6970. $user_roles[] = COURSE_STUDENT;
  6971. }
  6972. } else {
  6973. $user_status_in_session = SessionManager::get_user_status_in_course_session(
  6974. $user_id,
  6975. $courseId,
  6976. $session_id
  6977. );
  6978. if (!empty($user_status_in_session)) {
  6979. if ($user_status_in_session == 0) {
  6980. $user_roles[] = SESSION_STUDENT;
  6981. }
  6982. if ($user_status_in_session == 2) {
  6983. $user_roles[] = SESSION_COURSE_COACH;
  6984. }
  6985. }
  6986. /*if (api_is_course_session_coach($user_id, $course_code, $session_id)) {
  6987. $user_roles[] = SESSION_COURSE_COACH;
  6988. }*/
  6989. }
  6990. }
  6991. return $user_roles;
  6992. }
  6993. /**
  6994. * @param int $courseId
  6995. * @param int $session_id
  6996. *
  6997. * @return bool
  6998. */
  6999. function api_coach_can_edit_view_results($courseId = null, $session_id = null)
  7000. {
  7001. if (api_is_platform_admin()) {
  7002. return true;
  7003. }
  7004. $user_id = api_get_user_id();
  7005. if (empty($courseId)) {
  7006. $courseId = api_get_course_int_id();
  7007. }
  7008. if (empty($session_id)) {
  7009. $session_id = api_get_session_id();
  7010. }
  7011. $roles = api_detect_user_roles($user_id, $courseId, $session_id);
  7012. if (in_array(SESSION_COURSE_COACH, $roles)) {
  7013. //return api_get_setting('session_tutor_reports_visibility') == 'true';
  7014. return true;
  7015. } else {
  7016. if (in_array(COURSEMANAGER, $roles)) {
  7017. return true;
  7018. }
  7019. return false;
  7020. }
  7021. }
  7022. /**
  7023. * @param string $file
  7024. *
  7025. * @return string
  7026. */
  7027. function api_get_js_simple($file)
  7028. {
  7029. return '<script type="text/javascript" src="'.$file.'"></script>'."\n";
  7030. }
  7031. function api_set_settings_and_plugins()
  7032. {
  7033. global $_configuration;
  7034. $_setting = [];
  7035. $_plugins = [];
  7036. // access_url == 1 is the default chamilo location
  7037. $settings_by_access_list = [];
  7038. $access_url_id = api_get_current_access_url_id();
  7039. if ($access_url_id != 1) {
  7040. $url_info = api_get_access_url($_configuration['access_url']);
  7041. if ($url_info['active'] == 1) {
  7042. $settings_by_access = &api_get_settings(null, 'list', $_configuration['access_url'], 1);
  7043. foreach ($settings_by_access as &$row) {
  7044. if (empty($row['variable'])) {
  7045. $row['variable'] = 0;
  7046. }
  7047. if (empty($row['subkey'])) {
  7048. $row['subkey'] = 0;
  7049. }
  7050. if (empty($row['category'])) {
  7051. $row['category'] = 0;
  7052. }
  7053. $settings_by_access_list[$row['variable']][$row['subkey']][$row['category']] = $row;
  7054. }
  7055. }
  7056. }
  7057. $result = api_get_settings(null, 'list', 1);
  7058. foreach ($result as &$row) {
  7059. if ($access_url_id != 1) {
  7060. if ($url_info['active'] == 1) {
  7061. $var = empty($row['variable']) ? 0 : $row['variable'];
  7062. $subkey = empty($row['subkey']) ? 0 : $row['subkey'];
  7063. $category = empty($row['category']) ? 0 : $row['category'];
  7064. }
  7065. if ($row['access_url_changeable'] == 1 && $url_info['active'] == 1) {
  7066. if (isset($settings_by_access_list[$var]) &&
  7067. $settings_by_access_list[$var][$subkey][$category]['selected_value'] != '') {
  7068. if ($row['subkey'] == null) {
  7069. $_setting[$row['variable']] = $settings_by_access_list[$var][$subkey][$category]['selected_value'];
  7070. } else {
  7071. $_setting[$row['variable']][$row['subkey']] = $settings_by_access_list[$var][$subkey][$category]['selected_value'];
  7072. }
  7073. } else {
  7074. if ($row['subkey'] == null) {
  7075. $_setting[$row['variable']] = $row['selected_value'];
  7076. } else {
  7077. $_setting[$row['variable']][$row['subkey']] = $row['selected_value'];
  7078. }
  7079. }
  7080. } else {
  7081. if ($row['subkey'] == null) {
  7082. $_setting[$row['variable']] = $row['selected_value'];
  7083. } else {
  7084. $_setting[$row['variable']][$row['subkey']] = $row['selected_value'];
  7085. }
  7086. }
  7087. } else {
  7088. if ($row['subkey'] == null) {
  7089. $_setting[$row['variable']] = $row['selected_value'];
  7090. } else {
  7091. $_setting[$row['variable']][$row['subkey']] = $row['selected_value'];
  7092. }
  7093. }
  7094. }
  7095. $result = api_get_settings('Plugins', 'list', $access_url_id);
  7096. $_plugins = [];
  7097. foreach ($result as &$row) {
  7098. $key = &$row['variable'];
  7099. if (is_string($_setting[$key])) {
  7100. $_setting[$key] = [];
  7101. }
  7102. $_setting[$key][] = $row['selected_value'];
  7103. $_plugins[$key][] = $row['selected_value'];
  7104. }
  7105. $_SESSION['_setting'] = $_setting;
  7106. $_SESSION['_plugins'] = $_plugins;
  7107. }
  7108. /**
  7109. * Modify default memory_limit and max_execution_time limits
  7110. * Needed when processing long tasks.
  7111. */
  7112. function api_set_more_memory_and_time_limits()
  7113. {
  7114. if (function_exists('ini_set')) {
  7115. api_set_memory_limit('256M');
  7116. ini_set('max_execution_time', 1800);
  7117. }
  7118. }
  7119. /**
  7120. * Tries to set memory limit, if authorized and new limit is higher than current.
  7121. *
  7122. * @param string $mem New memory limit
  7123. *
  7124. * @return bool True on success, false on failure or current is higher than suggested
  7125. * @assert (null) === false
  7126. * @assert (-1) === false
  7127. * @assert (0) === true
  7128. * @assert ('1G') === true
  7129. */
  7130. function api_set_memory_limit($mem)
  7131. {
  7132. //if ini_set() not available, this function is useless
  7133. if (!function_exists('ini_set') || is_null($mem) || $mem == -1) {
  7134. return false;
  7135. }
  7136. $memory_limit = ini_get('memory_limit');
  7137. if (api_get_bytes_memory_limit($mem) > api_get_bytes_memory_limit($memory_limit)) {
  7138. ini_set('memory_limit', $mem);
  7139. return true;
  7140. }
  7141. return false;
  7142. }
  7143. /**
  7144. * Gets memory limit in bytes.
  7145. *
  7146. * @param string The memory size (128M, 1G, 1000K, etc)
  7147. *
  7148. * @return int
  7149. * @assert (null) === false
  7150. * @assert ('1t') === 1099511627776
  7151. * @assert ('1g') === 1073741824
  7152. * @assert ('1m') === 1048576
  7153. * @assert ('100k') === 102400
  7154. */
  7155. function api_get_bytes_memory_limit($mem)
  7156. {
  7157. $size = strtolower(substr($mem, -1));
  7158. switch ($size) {
  7159. case 't':
  7160. $mem = intval(substr($mem, -1)) * 1024 * 1024 * 1024 * 1024;
  7161. break;
  7162. case 'g':
  7163. $mem = intval(substr($mem, 0, -1)) * 1024 * 1024 * 1024;
  7164. break;
  7165. case 'm':
  7166. $mem = intval(substr($mem, 0, -1)) * 1024 * 1024;
  7167. break;
  7168. case 'k':
  7169. $mem = intval(substr($mem, 0, -1)) * 1024;
  7170. break;
  7171. default:
  7172. // we assume it's integer only
  7173. $mem = intval($mem);
  7174. break;
  7175. }
  7176. return $mem;
  7177. }
  7178. /**
  7179. * Finds all the information about a user from username instead of user id.
  7180. *
  7181. * @param string $officialCode
  7182. *
  7183. * @return array $user_info user_id, lastname, firstname, username, email, ...
  7184. *
  7185. * @author Yannick Warnier <yannick.warnier@beeznest.com>
  7186. */
  7187. function api_get_user_info_from_official_code($officialCode)
  7188. {
  7189. if (empty($officialCode)) {
  7190. return false;
  7191. }
  7192. $sql = "SELECT * FROM ".Database::get_main_table(TABLE_MAIN_USER)."
  7193. WHERE official_code ='".Database::escape_string($officialCode)."'";
  7194. $result = Database::query($sql);
  7195. if (Database::num_rows($result) > 0) {
  7196. $result_array = Database::fetch_array($result);
  7197. return _api_format_user($result_array);
  7198. }
  7199. return false;
  7200. }
  7201. /**
  7202. * @param string $usernameInputId
  7203. * @param string $passwordInputId
  7204. *
  7205. * @return string|null
  7206. */
  7207. function api_get_password_checker_js($usernameInputId, $passwordInputId)
  7208. {
  7209. $checkPass = api_get_setting('allow_strength_pass_checker');
  7210. $useStrengthPassChecker = $checkPass === 'true';
  7211. if ($useStrengthPassChecker === false) {
  7212. return null;
  7213. }
  7214. $translations = [
  7215. 'wordLength' => get_lang('PasswordIsTooShort'),
  7216. 'wordNotEmail' => get_lang('YourPasswordCannotBeTheSameAsYourEmail'),
  7217. 'wordSimilarToUsername' => get_lang('YourPasswordCannotContainYourUsername'),
  7218. 'wordTwoCharacterClasses' => get_lang('WordTwoCharacterClasses'),
  7219. 'wordRepetitions' => get_lang('TooManyRepetitions'),
  7220. 'wordSequences' => get_lang('YourPasswordContainsSequences'),
  7221. 'errorList' => get_lang('ErrorsFound'),
  7222. 'veryWeak' => get_lang('PasswordVeryWeak'),
  7223. 'weak' => get_lang('PasswordWeak'),
  7224. 'normal' => get_lang('PasswordNormal'),
  7225. 'medium' => get_lang('PasswordMedium'),
  7226. 'strong' => get_lang('PasswordStrong'),
  7227. 'veryStrong' => get_lang('PasswordVeryStrong'),
  7228. ];
  7229. $js = api_get_asset('pwstrength-bootstrap/dist/pwstrength-bootstrap.min.js');
  7230. $js .= "<script>
  7231. var errorMessages = {
  7232. password_to_short : \"".get_lang('PasswordIsTooShort')."\",
  7233. same_as_username : \"".get_lang('YourPasswordCannotBeTheSameAsYourUsername')."\"
  7234. };
  7235. $(document).ready(function() {
  7236. var lang = ".json_encode($translations).";
  7237. var options = {
  7238. onLoad : function () {
  7239. //$('#messages').text('Start typing password');
  7240. },
  7241. onKeyUp: function (evt) {
  7242. $(evt.target).pwstrength('outputErrorList');
  7243. },
  7244. errorMessages : errorMessages,
  7245. viewports: {
  7246. progress: '#password_progress',
  7247. verdict: '#password-verdict',
  7248. errors: '#password-errors'
  7249. },
  7250. usernameField: '$usernameInputId'
  7251. };
  7252. options.i18n = {
  7253. t: function (key) {
  7254. var result = lang[key];
  7255. return result === key ? '' : result; // This assumes you return the
  7256. }
  7257. };
  7258. $('".$passwordInputId."').pwstrength(options);
  7259. });
  7260. </script>";
  7261. return $js;
  7262. }
  7263. /**
  7264. * create an user extra field called 'captcha_blocked_until_date'.
  7265. *
  7266. * @param string $username
  7267. *
  7268. * @return bool
  7269. */
  7270. function api_block_account_captcha($username)
  7271. {
  7272. $userInfo = api_get_user_info_from_username($username);
  7273. if (empty($userInfo)) {
  7274. return false;
  7275. }
  7276. $minutesToBlock = api_get_setting('captcha_time_to_block');
  7277. $time = time() + $minutesToBlock * 60;
  7278. UserManager::update_extra_field_value(
  7279. $userInfo['user_id'],
  7280. 'captcha_blocked_until_date',
  7281. api_get_utc_datetime($time)
  7282. );
  7283. return true;
  7284. }
  7285. /**
  7286. * @param string $username
  7287. *
  7288. * @return bool
  7289. */
  7290. function api_clean_account_captcha($username)
  7291. {
  7292. $userInfo = api_get_user_info_from_username($username);
  7293. if (empty($userInfo)) {
  7294. return false;
  7295. }
  7296. Session::erase('loginFailedCount');
  7297. UserManager::update_extra_field_value(
  7298. $userInfo['user_id'],
  7299. 'captcha_blocked_until_date',
  7300. null
  7301. );
  7302. return true;
  7303. }
  7304. /**
  7305. * @param string $username
  7306. *
  7307. * @return bool
  7308. */
  7309. function api_get_user_blocked_by_captcha($username)
  7310. {
  7311. $userInfo = api_get_user_info_from_username($username);
  7312. if (empty($userInfo)) {
  7313. return false;
  7314. }
  7315. $data = UserManager::get_extra_user_data_by_field(
  7316. $userInfo['user_id'],
  7317. 'captcha_blocked_until_date'
  7318. );
  7319. if (isset($data) && isset($data['captcha_blocked_until_date'])) {
  7320. return $data['captcha_blocked_until_date'];
  7321. }
  7322. return false;
  7323. }
  7324. /**
  7325. * Remove tags from HTML anf return the $in_number_char first non-HTML char
  7326. * Postfix the text with "..." if it has been truncated.
  7327. *
  7328. * @param string $text
  7329. * @param int $number
  7330. *
  7331. * @return string
  7332. *
  7333. * @author hubert borderiou
  7334. */
  7335. function api_get_short_text_from_html($text, $number)
  7336. {
  7337. // Delete script and style tags
  7338. $text = preg_replace('/(<(script|style)\b[^>]*>).*?(<\/\2>)/is', "$1$3", $text);
  7339. $text = api_html_entity_decode($text);
  7340. $out_res = api_remove_tags_with_space($text, false);
  7341. $postfix = "...";
  7342. if (strlen($out_res) > $number) {
  7343. $out_res = substr($out_res, 0, $number).$postfix;
  7344. }
  7345. return $out_res;
  7346. }
  7347. /**
  7348. * Replace tags with a space in a text.
  7349. * If $in_double_quote_replace, replace " with '' (for HTML attribute purpose, for exemple).
  7350. *
  7351. * @return string
  7352. *
  7353. * @author hubert borderiou
  7354. */
  7355. function api_remove_tags_with_space($in_html, $in_double_quote_replace = true)
  7356. {
  7357. $out_res = $in_html;
  7358. if ($in_double_quote_replace) {
  7359. $out_res = str_replace('"', "''", $out_res);
  7360. }
  7361. // avoid text stuck together when tags are removed, adding a space after >
  7362. $out_res = str_replace(">", "> ", $out_res);
  7363. $out_res = strip_tags($out_res);
  7364. return $out_res;
  7365. }
  7366. /**
  7367. * If true, the drh can access all content (courses, users) inside a session.
  7368. *
  7369. * @return bool
  7370. */
  7371. function api_drh_can_access_all_session_content()
  7372. {
  7373. $value = api_get_setting('drh_can_access_all_session_content');
  7374. return $value === 'true';
  7375. }
  7376. /**
  7377. * @param string $tool
  7378. * @param string $setting
  7379. * @param int $defaultValue
  7380. *
  7381. * @return string
  7382. */
  7383. function api_get_default_tool_setting($tool, $setting, $defaultValue)
  7384. {
  7385. global $_configuration;
  7386. if (isset($_configuration[$tool]) &&
  7387. isset($_configuration[$tool]['default_settings']) &&
  7388. isset($_configuration[$tool]['default_settings'][$setting])
  7389. ) {
  7390. return $_configuration[$tool]['default_settings'][$setting];
  7391. }
  7392. return $defaultValue;
  7393. }
  7394. /**
  7395. * Checks if user can login as another user.
  7396. *
  7397. * @param int $loginAsUserId the user id to log in
  7398. * @param int $userId my user id
  7399. *
  7400. * @return bool
  7401. */
  7402. function api_can_login_as($loginAsUserId, $userId = null)
  7403. {
  7404. if (empty($userId)) {
  7405. $userId = api_get_user_id();
  7406. }
  7407. if ($loginAsUserId == $userId) {
  7408. return false;
  7409. }
  7410. if (empty($loginAsUserId)) {
  7411. return false;
  7412. }
  7413. if ($loginAsUserId != strval(intval($loginAsUserId))) {
  7414. return false;
  7415. }
  7416. // Check if the user to login is an admin
  7417. if (api_is_platform_admin_by_id($loginAsUserId)) {
  7418. // Only super admins can login to admin accounts
  7419. if (!api_global_admin_can_edit_admin($loginAsUserId)) {
  7420. return false;
  7421. }
  7422. }
  7423. $userInfo = api_get_user_info($loginAsUserId);
  7424. $isDrh = function () use ($loginAsUserId) {
  7425. if (api_is_drh()) {
  7426. if (api_drh_can_access_all_session_content()) {
  7427. $users = SessionManager::getAllUsersFromCoursesFromAllSessionFromStatus(
  7428. 'drh_all',
  7429. api_get_user_id()
  7430. );
  7431. $userList = [];
  7432. if (is_array($users)) {
  7433. foreach ($users as $user) {
  7434. $userList[] = $user['user_id'];
  7435. }
  7436. }
  7437. if (in_array($loginAsUserId, $userList)) {
  7438. return true;
  7439. }
  7440. } else {
  7441. if (api_is_drh() &&
  7442. UserManager::is_user_followed_by_drh($loginAsUserId, api_get_user_id())
  7443. ) {
  7444. return true;
  7445. }
  7446. }
  7447. }
  7448. return false;
  7449. };
  7450. $loginAsStatusForSessionAdmins = [STUDENT];
  7451. if (api_get_configuration_value('allow_session_admin_login_as_teacher')) {
  7452. $loginAsStatusForSessionAdmins[] = COURSEMANAGER;
  7453. }
  7454. return api_is_platform_admin() ||
  7455. (api_is_session_admin() && in_array($userInfo['status'], $loginAsStatusForSessionAdmins)) ||
  7456. $isDrh();
  7457. }
  7458. /**
  7459. * @return bool
  7460. */
  7461. function api_is_allowed_in_course()
  7462. {
  7463. if (api_is_platform_admin()) {
  7464. return true;
  7465. }
  7466. return Session::read('is_allowed_in_course');
  7467. }
  7468. /**
  7469. * Set the cookie to go directly to the course code $in_firstpage
  7470. * after login.
  7471. *
  7472. * @param string $in_firstpage is the course code of the course to go
  7473. */
  7474. function api_set_firstpage_parameter($in_firstpage)
  7475. {
  7476. setcookie('GotoCourse', $in_firstpage);
  7477. }
  7478. /**
  7479. * Delete the cookie to go directly to the course code $in_firstpage
  7480. * after login.
  7481. */
  7482. function api_delete_firstpage_parameter()
  7483. {
  7484. setcookie('GotoCourse', '', time() - 3600);
  7485. }
  7486. /**
  7487. * @return bool if course_code for direct course access after login is set
  7488. */
  7489. function exist_firstpage_parameter()
  7490. {
  7491. return isset($_COOKIE['GotoCourse']) && $_COOKIE['GotoCourse'] != '';
  7492. }
  7493. /**
  7494. * @return return the course_code of the course where user login
  7495. */
  7496. function api_get_firstpage_parameter()
  7497. {
  7498. return $_COOKIE['GotoCourse'];
  7499. }
  7500. /**
  7501. * Return true on https install.
  7502. *
  7503. * @return bool
  7504. */
  7505. function api_is_https()
  7506. {
  7507. if (!empty($_SERVER['HTTP_X_FORWARDED_PROTO']) &&
  7508. $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https' || !empty($_configuration['force_https_forwarded_proto'])
  7509. ) {
  7510. $isSecured = true;
  7511. } else {
  7512. if (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off') {
  7513. $isSecured = true;
  7514. } else {
  7515. $isSecured = false;
  7516. // last chance
  7517. if (!empty($_SERVER['SERVER_PORT']) && $_SERVER['SERVER_PORT'] == 443) {
  7518. $isSecured = true;
  7519. }
  7520. }
  7521. }
  7522. return $isSecured;
  7523. }
  7524. /**
  7525. * Return protocol (http or https).
  7526. *
  7527. * @return string
  7528. */
  7529. function api_get_protocol()
  7530. {
  7531. return api_is_https() ? 'https' : 'http';
  7532. }
  7533. /**
  7534. * Return a string where " are replaced with 2 '
  7535. * It is useful when you pass a PHP variable in a Javascript browser dialog
  7536. * e.g. : alert("<?php get_lang('Message') ?>");
  7537. * and message contains character ".
  7538. *
  7539. * @param string $in_text
  7540. *
  7541. * @return string
  7542. */
  7543. function convert_double_quote_to_single($in_text)
  7544. {
  7545. return api_preg_replace('/"/', "''", $in_text);
  7546. }
  7547. /**
  7548. * Get origin.
  7549. *
  7550. * @param string
  7551. *
  7552. * @return string
  7553. */
  7554. function api_get_origin()
  7555. {
  7556. $origin = isset($_REQUEST['origin']) ? Security::remove_XSS($_REQUEST['origin']) : '';
  7557. return $origin;
  7558. }
  7559. /**
  7560. * Warns an user that the portal reach certain limit.
  7561. *
  7562. * @param string $limitName
  7563. */
  7564. function api_warn_hosting_contact($limitName)
  7565. {
  7566. $hostingParams = api_get_configuration_value(1);
  7567. $email = null;
  7568. if (!empty($hostingParams)) {
  7569. if (isset($hostingParams['hosting_contact_mail'])) {
  7570. $email = $hostingParams['hosting_contact_mail'];
  7571. }
  7572. }
  7573. if (!empty($email)) {
  7574. $subject = get_lang('HostingWarningReached');
  7575. $body = get_lang('PortalName').': '.api_get_path(WEB_PATH)." \n ";
  7576. $body .= get_lang('PortalLimitType').': '.$limitName." \n ";
  7577. if (isset($hostingParams[$limitName])) {
  7578. $body .= get_lang('Value').': '.$hostingParams[$limitName];
  7579. }
  7580. api_mail_html(null, $email, $subject, $body);
  7581. }
  7582. }
  7583. /**
  7584. * Gets value of a variable from app/config/configuration.php
  7585. * Variables that are not set in the configuration.php file but set elsewhere:
  7586. * - virtual_css_theme_folder (vchamilo plugin)
  7587. * - access_url (global.inc.php)
  7588. * - apc/apc_prefix (global.inc.php).
  7589. *
  7590. * @param string $variable
  7591. *
  7592. * @return bool|mixed
  7593. */
  7594. function api_get_configuration_value($variable)
  7595. {
  7596. global $_configuration;
  7597. // Check the current url id, id = 1 by default
  7598. $urlId = isset($_configuration['access_url']) ? (int) $_configuration['access_url'] : 1;
  7599. $variable = trim($variable);
  7600. // Check if variable exists
  7601. if (isset($_configuration[$variable])) {
  7602. if (is_array($_configuration[$variable])) {
  7603. // Check if it exists for the sub portal
  7604. if (array_key_exists($urlId, $_configuration[$variable])) {
  7605. return $_configuration[$variable][$urlId];
  7606. } else {
  7607. // Try to found element with id = 1 (master portal)
  7608. if (array_key_exists(1, $_configuration[$variable])) {
  7609. return $_configuration[$variable][1];
  7610. }
  7611. }
  7612. }
  7613. return $_configuration[$variable];
  7614. }
  7615. return false;
  7616. }
  7617. /**
  7618. * Returns supported image extensions in the portal.
  7619. *
  7620. * @param bool $supportVectors Whether vector images should also be accepted or not
  7621. *
  7622. * @return array Supported image extensions in the portal
  7623. */
  7624. function api_get_supported_image_extensions($supportVectors = true)
  7625. {
  7626. // jpg can also be called jpeg, jpe, jfif and jif. See https://en.wikipedia.org/wiki/JPEG#JPEG_filename_extensions
  7627. $supportedImageExtensions = ['jpg', 'jpeg', 'png', 'gif', 'jpe', 'jfif', 'jif'];
  7628. if ($supportVectors) {
  7629. array_push($supportedImageExtensions, 'svg');
  7630. }
  7631. if (version_compare(PHP_VERSION, '5.5.0', '>=')) {
  7632. array_push($supportedImageExtensions, 'webp');
  7633. }
  7634. return $supportedImageExtensions;
  7635. }
  7636. /**
  7637. * This setting changes the registration status for the campus.
  7638. *
  7639. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
  7640. *
  7641. * @version August 2006
  7642. *
  7643. * @param bool $listCampus Whether we authorize
  7644. *
  7645. * @todo the $_settings should be reloaded here. => write api function for this and use this in global.inc.php also.
  7646. */
  7647. function api_register_campus($listCampus = true)
  7648. {
  7649. $tbl_settings = Database::get_main_table(TABLE_MAIN_SETTINGS_CURRENT);
  7650. $sql = "UPDATE $tbl_settings SET selected_value='true' WHERE variable='registered'";
  7651. Database::query($sql);
  7652. if (!$listCampus) {
  7653. $sql = "UPDATE $tbl_settings SET selected_value='true' WHERE variable='donotlistcampus'";
  7654. Database::query($sql);
  7655. }
  7656. }
  7657. /**
  7658. * Checks whether current user is a student boss.
  7659. *
  7660. * @global array $_user
  7661. *
  7662. * @return bool
  7663. */
  7664. function api_is_student_boss()
  7665. {
  7666. $_user = api_get_user_info();
  7667. return isset($_user['status']) && $_user['status'] == STUDENT_BOSS;
  7668. }
  7669. /**
  7670. * Check whether the user type should be exclude.
  7671. * Such as invited or anonymous users.
  7672. *
  7673. * @param bool $checkDB Optional. Whether check the user status
  7674. * @param int $userId Options. The user id
  7675. *
  7676. * @return bool
  7677. */
  7678. function api_is_excluded_user_type($checkDB = false, $userId = 0)
  7679. {
  7680. if ($checkDB) {
  7681. $userId = empty($userId) ? api_get_user_id() : (int) $userId;
  7682. if ($userId == 0) {
  7683. return true;
  7684. }
  7685. $userInfo = api_get_user_info($userId);
  7686. switch ($userInfo['status']) {
  7687. case INVITEE:
  7688. case ANONYMOUS:
  7689. return true;
  7690. default:
  7691. return false;
  7692. }
  7693. }
  7694. $isInvited = api_is_invitee();
  7695. $isAnonymous = api_is_anonymous();
  7696. if ($isInvited || $isAnonymous) {
  7697. return true;
  7698. }
  7699. return false;
  7700. }
  7701. /**
  7702. * Get the user status to ignore in reports.
  7703. *
  7704. * @param string $format Optional. The result type (array or string)
  7705. *
  7706. * @return array|string
  7707. */
  7708. function api_get_users_status_ignored_in_reports($format = 'array')
  7709. {
  7710. $excludedTypes = [
  7711. INVITEE,
  7712. ANONYMOUS,
  7713. ];
  7714. if ($format == 'string') {
  7715. return implode(', ', $excludedTypes);
  7716. }
  7717. return $excludedTypes;
  7718. }
  7719. /**
  7720. * Set the Site Use Cookie Warning for 1 year.
  7721. */
  7722. function api_set_site_use_cookie_warning_cookie()
  7723. {
  7724. setcookie('ChamiloUsesCookies', 'ok', time() + 31556926);
  7725. }
  7726. /**
  7727. * Return true if the Site Use Cookie Warning Cookie warning exists.
  7728. *
  7729. * @return bool
  7730. */
  7731. function api_site_use_cookie_warning_cookie_exist()
  7732. {
  7733. return isset($_COOKIE['ChamiloUsesCookies']);
  7734. }
  7735. /**
  7736. * Given a number of seconds, format the time to show hours, minutes and seconds.
  7737. *
  7738. * @param int $time The time in seconds
  7739. * @param string $originFormat Optional. PHP o JS
  7740. *
  7741. * @return string (00h00'00")
  7742. */
  7743. function api_format_time($time, $originFormat = 'php')
  7744. {
  7745. $h = get_lang('h');
  7746. $hours = $time / 3600;
  7747. $mins = ($time % 3600) / 60;
  7748. $secs = ($time % 60);
  7749. if ($time < 0) {
  7750. $hours = 0;
  7751. $mins = 0;
  7752. $secs = 0;
  7753. }
  7754. if ($originFormat == 'js') {
  7755. $formattedTime = trim(sprintf("%02d : %02d : %02d", $hours, $mins, $secs));
  7756. } else {
  7757. $formattedTime = trim(sprintf("%02d$h%02d'%02d\"", $hours, $mins, $secs));
  7758. }
  7759. return $formattedTime;
  7760. }
  7761. /**
  7762. * Create a new empty directory with index.html file.
  7763. *
  7764. * @param string $name The new directory name
  7765. * @param string $parentDirectory Directory parent directory name
  7766. *
  7767. * @return bool Return true if the directory was create. Otherwise return false
  7768. */
  7769. function api_create_protected_dir($name, $parentDirectory)
  7770. {
  7771. $isCreated = false;
  7772. if (!is_writable($parentDirectory)) {
  7773. return false;
  7774. }
  7775. $fullPath = $parentDirectory.api_replace_dangerous_char($name);
  7776. if (mkdir($fullPath, api_get_permissions_for_new_directories(), true)) {
  7777. $fp = fopen($fullPath.'/index.html', 'w');
  7778. if ($fp) {
  7779. if (fwrite($fp, '<html><head></head><body></body></html>')) {
  7780. $isCreated = true;
  7781. }
  7782. }
  7783. fclose($fp);
  7784. }
  7785. return $isCreated;
  7786. }
  7787. /**
  7788. * Sends an HTML email using the phpmailer class (and multipart/alternative to downgrade gracefully)
  7789. * Sender name and email can be specified, if not specified
  7790. * name and email of the platform admin are used.
  7791. *
  7792. * @author Bert Vanderkimpen ICT&O UGent
  7793. * @author Yannick Warnier <yannick.warnier@beeznest.com>
  7794. *
  7795. * @param string name of recipient
  7796. * @param string email of recipient
  7797. * @param string email subject
  7798. * @param string email body
  7799. * @param string sender name
  7800. * @param string sender e-mail
  7801. * @param array extra headers in form $headers = array($name => $value) to allow parsing
  7802. * @param array data file (path and filename)
  7803. * @param bool True for attaching a embedded file inside content html (optional)
  7804. * @param array Additional parameters
  7805. *
  7806. * @return int true if mail was sent
  7807. *
  7808. * @see class.phpmailer.php
  7809. */
  7810. function api_mail_html(
  7811. $recipient_name,
  7812. $recipient_email,
  7813. $subject,
  7814. $message,
  7815. $senderName = '',
  7816. $senderEmail = '',
  7817. $extra_headers = [],
  7818. $data_file = [],
  7819. $embedded_image = false,
  7820. $additionalParameters = []
  7821. ) {
  7822. global $platform_email;
  7823. $mail = new PHPMailer();
  7824. $mail->Mailer = $platform_email['SMTP_MAILER'];
  7825. $mail->Host = $platform_email['SMTP_HOST'];
  7826. $mail->Port = $platform_email['SMTP_PORT'];
  7827. $mail->CharSet = isset($platform_email['SMTP_CHARSET']) ? $platform_email['SMTP_CHARSET'] : 'UTF-8';
  7828. // Stay far below SMTP protocol 980 chars limit.
  7829. $mail->WordWrap = 200;
  7830. if ($platform_email['SMTP_AUTH']) {
  7831. $mail->SMTPAuth = 1;
  7832. $mail->Username = $platform_email['SMTP_USER'];
  7833. $mail->Password = $platform_email['SMTP_PASS'];
  7834. if (isset($platform_email['SMTP_SECURE'])) {
  7835. $mail->SMTPSecure = $platform_email['SMTP_SECURE'];
  7836. }
  7837. }
  7838. $mail->SMTPDebug = isset($platform_email['SMTP_DEBUG']) ? $platform_email['SMTP_DEBUG'] : 0;
  7839. // 5 = low, 1 = high
  7840. $mail->Priority = 3;
  7841. $mail->SMTPKeepAlive = true;
  7842. // Default values
  7843. $notification = new Notification();
  7844. $defaultEmail = $notification->getDefaultPlatformSenderEmail();
  7845. $defaultName = $notification->getDefaultPlatformSenderName();
  7846. // If the parameter is set don't use the admin.
  7847. $senderName = !empty($senderName) ? $senderName : $defaultName;
  7848. $senderEmail = !empty($senderEmail) ? $senderEmail : $defaultEmail;
  7849. // Reply to first
  7850. if (isset($extra_headers['reply_to']) && empty($platform_email['SMTP_UNIQUE_REPLY_TO'])) {
  7851. if (PHPMailer::validateAddress($extra_headers['reply_to']['mail'])) {
  7852. $mail->AddReplyTo(
  7853. $extra_headers['reply_to']['mail'],
  7854. $extra_headers['reply_to']['name']
  7855. );
  7856. // Errors to sender
  7857. $mail->AddCustomHeader('Errors-To: '.$extra_headers['reply_to']['mail']);
  7858. $mail->Sender = $extra_headers['reply_to']['mail'];
  7859. unset($extra_headers['reply_to']);
  7860. }
  7861. } else {
  7862. $mail->AddCustomHeader('Errors-To: '.$defaultEmail);
  7863. }
  7864. //If the SMTP configuration only accept one sender
  7865. if (isset($platform_email['SMTP_UNIQUE_SENDER']) && $platform_email['SMTP_UNIQUE_SENDER']) {
  7866. $senderName = $platform_email['SMTP_FROM_NAME'];
  7867. $senderEmail = $platform_email['SMTP_FROM_EMAIL'];
  7868. $valid = PHPMailer::validateAddress($senderEmail);
  7869. if ($valid) {
  7870. //force-set Sender to $senderEmail, otherwise SetFrom only does it if it is currently empty
  7871. $mail->Sender = $senderEmail;
  7872. }
  7873. }
  7874. $mail->SetFrom($senderEmail, $senderName);
  7875. $mail->Subject = $subject;
  7876. $mail->AltBody = strip_tags(
  7877. str_replace('<br />', "\n", api_html_entity_decode($message))
  7878. );
  7879. $list = api_get_configuration_value('send_all_emails_to');
  7880. if (!empty($list) && isset($list['emails'])) {
  7881. foreach ($list['emails'] as $email) {
  7882. //$mail->AddBCC($email);
  7883. $mail->AddAddress($email);
  7884. }
  7885. }
  7886. // Send embedded image.
  7887. if ($embedded_image) {
  7888. // Get all images html inside content.
  7889. preg_match_all("/<img\s+.*?src=[\"\']?([^\"\' >]*)[\"\']?[^>]*>/i", $message, $m);
  7890. // Prepare new tag images.
  7891. $new_images_html = [];
  7892. $i = 1;
  7893. if (!empty($m[1])) {
  7894. foreach ($m[1] as $image_path) {
  7895. $real_path = realpath($image_path);
  7896. $filename = basename($image_path);
  7897. $image_cid = $filename.'_'.$i;
  7898. $encoding = 'base64';
  7899. $image_type = mime_content_type($real_path);
  7900. $mail->AddEmbeddedImage(
  7901. $real_path,
  7902. $image_cid,
  7903. $filename,
  7904. $encoding,
  7905. $image_type
  7906. );
  7907. $new_images_html[] = '<img src="cid:'.$image_cid.'" />';
  7908. $i++;
  7909. }
  7910. }
  7911. // Replace origin image for new embedded image html.
  7912. $x = 0;
  7913. if (!empty($m[0])) {
  7914. foreach ($m[0] as $orig_img) {
  7915. $message = str_replace($orig_img, $new_images_html[$x], $message);
  7916. $x++;
  7917. }
  7918. }
  7919. }
  7920. $mailView = new Template(null, false, false, false, false, false, false);
  7921. $noReply = api_get_setting('noreply_email_address');
  7922. if (!empty($noReply)) {
  7923. $message .= "<br />".get_lang('ThisIsAutomaticEmailNoReply');
  7924. }
  7925. $mailView->assign('content', $message);
  7926. if (isset($additionalParameters['link'])) {
  7927. $mailView->assign('link', $additionalParameters['link']);
  7928. }
  7929. $mailView->assign('mail_header_style', api_get_configuration_value('mail_header_style'));
  7930. $mailView->assign('mail_content_style', api_get_configuration_value('mail_content_style'));
  7931. $layout = $mailView->get_template('mail/mail.tpl');
  7932. $mail->Body = $mailView->fetch($layout);
  7933. // Attachment ...
  7934. if (!empty($data_file)) {
  7935. foreach ($data_file as $file_attach) {
  7936. if (!empty($file_attach['path']) && !empty($file_attach['filename'])) {
  7937. $mail->AddAttachment($file_attach['path'], $file_attach['filename']);
  7938. }
  7939. }
  7940. }
  7941. // Only valid addresses are accepted.
  7942. if (is_array($recipient_email)) {
  7943. foreach ($recipient_email as $dest) {
  7944. if (api_valid_email($dest)) {
  7945. $mail->AddAddress($dest, $recipient_name);
  7946. }
  7947. }
  7948. } else {
  7949. if (api_valid_email($recipient_email)) {
  7950. $mail->AddAddress($recipient_email, $recipient_name);
  7951. } else {
  7952. return 0;
  7953. }
  7954. }
  7955. if (is_array($extra_headers) && count($extra_headers) > 0) {
  7956. foreach ($extra_headers as $key => $value) {
  7957. switch (strtolower($key)) {
  7958. case 'encoding':
  7959. case 'content-transfer-encoding':
  7960. $mail->Encoding = $value;
  7961. break;
  7962. case 'charset':
  7963. $mail->Charset = $value;
  7964. break;
  7965. case 'contenttype':
  7966. case 'content-type':
  7967. $mail->ContentType = $value;
  7968. break;
  7969. default:
  7970. $mail->AddCustomHeader($key.':'.$value);
  7971. break;
  7972. }
  7973. }
  7974. } else {
  7975. if (!empty($extra_headers)) {
  7976. $mail->AddCustomHeader($extra_headers);
  7977. }
  7978. }
  7979. // WordWrap the html body (phpMailer only fixes AltBody) FS#2988
  7980. $mail->Body = $mail->WrapText($mail->Body, $mail->WordWrap);
  7981. // Send the mail message.
  7982. if (!$mail->Send()) {
  7983. error_log('ERROR: mail not sent to '.$recipient_name.' ('.$recipient_email.') because of '.$mail->ErrorInfo.'<br />');
  7984. if ($mail->SMTPDebug) {
  7985. error_log(
  7986. "Connection details :: ".
  7987. "Protocol: ".$mail->Mailer.' :: '.
  7988. "Host/Port: ".$mail->Host.':'.$mail->Port.' :: '.
  7989. "Authent/Open: ".($mail->SMTPAuth ? 'Authent' : 'Open').' :: '.
  7990. ($mail->SMTPAuth ? " User/Pass: ".$mail->Username.':'.$mail->Password : '').' :: '.
  7991. "Sender: ".$mail->Sender
  7992. );
  7993. }
  7994. return 0;
  7995. }
  7996. if (!empty($additionalParameters)) {
  7997. $plugin = new AppPlugin();
  7998. $smsPlugin = $plugin->getSMSPluginLibrary();
  7999. if ($smsPlugin) {
  8000. $smsPlugin->send($additionalParameters);
  8001. }
  8002. }
  8003. // Clear all the addresses.
  8004. $mail->ClearAddresses();
  8005. // Clear all attachments
  8006. $mail->ClearAttachments();
  8007. return 1;
  8008. }
  8009. /**
  8010. * @param string $tool Possible values: GroupManager::GROUP_TOOL_*
  8011. * @param bool $showHeader
  8012. */
  8013. function api_protect_course_group($tool, $showHeader = true)
  8014. {
  8015. $userId = api_get_user_id();
  8016. $groupId = api_get_group_id();
  8017. $groupInfo = GroupManager::get_group_properties($groupId);
  8018. if (!empty($groupInfo)) {
  8019. $allow = GroupManager::user_has_access(
  8020. $userId,
  8021. $groupInfo['iid'],
  8022. $tool
  8023. );
  8024. if (!$allow) {
  8025. api_not_allowed($showHeader);
  8026. }
  8027. }
  8028. }
  8029. /**
  8030. * Check if a date is in a date range.
  8031. *
  8032. * @param datetime $startDate
  8033. * @param datetime $endDate
  8034. * @param datetime $currentDate
  8035. *
  8036. * @return bool true if date is in rage, false otherwise
  8037. */
  8038. function api_is_date_in_date_range($startDate, $endDate, $currentDate = null)
  8039. {
  8040. $startDate = strtotime(api_get_local_time($startDate));
  8041. $endDate = strtotime(api_get_local_time($endDate));
  8042. $currentDate = strtotime(api_get_local_time($currentDate));
  8043. if ($currentDate >= $startDate && $currentDate <= $endDate) {
  8044. return true;
  8045. }
  8046. return false;
  8047. }
  8048. /**
  8049. * Eliminate the duplicates of a multidimensional array by sending the key.
  8050. *
  8051. * @param array $array multidimensional array
  8052. * @param int $key key to find to compare
  8053. *
  8054. * @return array
  8055. */
  8056. function api_unique_multidim_array($array, $key)
  8057. {
  8058. $temp_array = [];
  8059. $i = 0;
  8060. $key_array = [];
  8061. foreach ($array as $val) {
  8062. if (!in_array($val[$key], $key_array)) {
  8063. $key_array[$i] = $val[$key];
  8064. $temp_array[$i] = $val;
  8065. }
  8066. $i++;
  8067. }
  8068. return $temp_array;
  8069. }
  8070. /**
  8071. * Limit the access to Session Admins when the limit_session_admin_role
  8072. * configuration variable is set to true.
  8073. */
  8074. function api_protect_limit_for_session_admin()
  8075. {
  8076. $limitAdmin = api_get_setting('limit_session_admin_role');
  8077. if (api_is_session_admin() && $limitAdmin === 'true') {
  8078. api_not_allowed(true);
  8079. }
  8080. }
  8081. /**
  8082. * Limits that a session admin has access to list users.
  8083. * When limit_session_admin_list_users configuration variable is set to true.
  8084. */
  8085. function api_protect_session_admin_list_users()
  8086. {
  8087. $limitAdmin = api_get_configuration_value('limit_session_admin_list_users');
  8088. if (api_is_session_admin() && true === $limitAdmin) {
  8089. api_not_allowed(true);
  8090. }
  8091. }
  8092. /**
  8093. * @return bool
  8094. */
  8095. function api_is_student_view_active()
  8096. {
  8097. $studentView = Session::read('studentview');
  8098. return $studentView == 'studentview';
  8099. }
  8100. /**
  8101. * Adds a file inside the upload/$type/id.
  8102. *
  8103. * @param string $type
  8104. * @param array $file
  8105. * @param int $itemId
  8106. * @param string $cropParameters
  8107. *
  8108. * @return array|bool
  8109. */
  8110. function api_upload_file($type, $file, $itemId, $cropParameters = '')
  8111. {
  8112. $upload = process_uploaded_file($file);
  8113. if ($upload) {
  8114. $name = api_replace_dangerous_char($file['name']);
  8115. // No "dangerous" files
  8116. $name = disable_dangerous_file($name);
  8117. $pathId = '/'.substr((string) $itemId, 0, 1).'/'.$itemId.'/';
  8118. $path = api_get_path(SYS_UPLOAD_PATH).$type.$pathId;
  8119. if (!is_dir($path)) {
  8120. mkdir($path, api_get_permissions_for_new_directories(), true);
  8121. }
  8122. $pathToSave = $path.$name;
  8123. $result = moveUploadedFile($file, $pathToSave);
  8124. if ($result) {
  8125. if (!empty($cropParameters)) {
  8126. $image = new Image($pathToSave);
  8127. $image->crop($cropParameters);
  8128. }
  8129. return ['path_to_save' => $pathId.$name];
  8130. }
  8131. return false;
  8132. }
  8133. }
  8134. /**
  8135. * @param string $type
  8136. * @param int $itemId
  8137. * @param string $file
  8138. *
  8139. * @return bool
  8140. */
  8141. function api_get_uploaded_web_url($type, $itemId, $file)
  8142. {
  8143. return api_get_uploaded_file($type, $itemId, $file, true);
  8144. }
  8145. /**
  8146. * @param string $type
  8147. * @param int $itemId
  8148. * @param string $file
  8149. * @param bool $getUrl
  8150. *
  8151. * @return bool
  8152. */
  8153. function api_get_uploaded_file($type, $itemId, $file, $getUrl = false)
  8154. {
  8155. $itemId = (int) $itemId;
  8156. $pathId = '/'.substr((string) $itemId, 0, 1).'/'.$itemId.'/';
  8157. $path = api_get_path(SYS_UPLOAD_PATH).$type.$pathId;
  8158. $file = basename($file);
  8159. $file = $path.'/'.$file;
  8160. if (Security::check_abs_path($file, $path) && is_file($file) && file_exists($file)) {
  8161. if ($getUrl) {
  8162. return str_replace(api_get_path(SYS_UPLOAD_PATH), api_get_path(WEB_UPLOAD_PATH), $file);
  8163. }
  8164. return $file;
  8165. }
  8166. return false;
  8167. }
  8168. /**
  8169. * @param string $type
  8170. * @param int $itemId
  8171. * @param string $file
  8172. * @param string $title
  8173. */
  8174. function api_download_uploaded_file($type, $itemId, $file, $title = '')
  8175. {
  8176. $file = api_get_uploaded_file($type, $itemId, $file);
  8177. if ($file) {
  8178. if (Security::check_abs_path($file, api_get_path(SYS_UPLOAD_PATH).$type)) {
  8179. DocumentManager::file_send_for_download($file, true, $title);
  8180. exit;
  8181. }
  8182. }
  8183. api_not_allowed(true);
  8184. }
  8185. /**
  8186. * @param string $type
  8187. * @param string $file
  8188. */
  8189. function api_remove_uploaded_file($type, $file)
  8190. {
  8191. $typePath = api_get_path(SYS_UPLOAD_PATH).$type;
  8192. $path = $typePath.'/'.$file;
  8193. if (Security::check_abs_path($path, $typePath) && file_exists($path) && is_file($path)) {
  8194. unlink($path);
  8195. }
  8196. }
  8197. /**
  8198. * @param string $type
  8199. * @param int $itemId
  8200. * @param string $file
  8201. *
  8202. * @return bool
  8203. */
  8204. function api_remove_uploaded_file_by_id($type, $itemId, $file)
  8205. {
  8206. $file = api_get_uploaded_file($type, $itemId, $file, false);
  8207. $typePath = api_get_path(SYS_UPLOAD_PATH).$type;
  8208. if (Security::check_abs_path($file, $typePath) && file_exists($file) && is_file($file)) {
  8209. unlink($file);
  8210. return true;
  8211. }
  8212. return false;
  8213. }
  8214. /**
  8215. * Converts string value to float value.
  8216. *
  8217. * 3.141516 => 3.141516
  8218. * 3,141516 => 3.141516
  8219. *
  8220. * @todo WIP
  8221. *
  8222. * @param string $number
  8223. *
  8224. * @return float
  8225. */
  8226. function api_float_val($number)
  8227. {
  8228. $number = (float) str_replace(',', '.', trim($number));
  8229. return $number;
  8230. }
  8231. /**
  8232. * Converts float values
  8233. * Example if $decimals = 2.
  8234. *
  8235. * 3.141516 => 3.14
  8236. * 3,141516 => 3,14
  8237. *
  8238. * @param string $number number in iso code
  8239. * @param int $decimals
  8240. * @param string $decimalSeparator
  8241. * @param string $thousandSeparator
  8242. *
  8243. * @return bool|string
  8244. */
  8245. function api_number_format($number, $decimals = 0, $decimalSeparator = '.', $thousandSeparator = ',')
  8246. {
  8247. $number = api_float_val($number);
  8248. return number_format($number, $decimals, $decimalSeparator, $thousandSeparator);
  8249. }
  8250. /**
  8251. * Set location url with a exit break by default.
  8252. *
  8253. * @param $url
  8254. * @param bool $exit
  8255. */
  8256. function location($url, $exit = true)
  8257. {
  8258. header('Location: '.$url);
  8259. if ($exit) {
  8260. exit;
  8261. }
  8262. }
  8263. /**
  8264. * @return string
  8265. */
  8266. function api_get_web_url()
  8267. {
  8268. if (api_get_setting('server_type') === 'test') {
  8269. return api_get_path(WEB_PATH).'web/app_dev.php/';
  8270. } else {
  8271. return api_get_path(WEB_PATH).'web/';
  8272. }
  8273. }
  8274. /**
  8275. * @param string $from
  8276. * @param string $to
  8277. *
  8278. * @return string
  8279. */
  8280. function api_get_relative_path($from, $to)
  8281. {
  8282. // some compatibility fixes for Windows paths
  8283. $from = is_dir($from) ? rtrim($from, '\/').'/' : $from;
  8284. $to = is_dir($to) ? rtrim($to, '\/').'/' : $to;
  8285. $from = str_replace('\\', '/', $from);
  8286. $to = str_replace('\\', '/', $to);
  8287. $from = explode('/', $from);
  8288. $to = explode('/', $to);
  8289. $relPath = $to;
  8290. foreach ($from as $depth => $dir) {
  8291. // find first non-matching dir
  8292. if ($dir === $to[$depth]) {
  8293. // ignore this directory
  8294. array_shift($relPath);
  8295. } else {
  8296. // get number of remaining dirs to $from
  8297. $remaining = count($from) - $depth;
  8298. if ($remaining > 1) {
  8299. // add traversals up to first matching dir
  8300. $padLength = (count($relPath) + $remaining - 1) * -1;
  8301. $relPath = array_pad($relPath, $padLength, '..');
  8302. break;
  8303. } else {
  8304. $relPath[0] = './'.$relPath[0];
  8305. }
  8306. }
  8307. }
  8308. return implode('/', $relPath);
  8309. }
  8310. /**
  8311. * Unserialize content using Brummann\Polyfill\Unserialize.
  8312. *
  8313. * @param string $type
  8314. * @param string $serialized
  8315. * @param bool $ignoreErrors. Optional.
  8316. *
  8317. * @return mixed
  8318. */
  8319. function api_unserialize_content($type, $serialized, $ignoreErrors = false)
  8320. {
  8321. switch ($type) {
  8322. case 'career':
  8323. case 'sequence_graph':
  8324. $allowedClasses = [Graph::class, VerticesMap::class, Vertices::class, Edges::class];
  8325. break;
  8326. case 'lp':
  8327. $allowedClasses = [
  8328. learnpath::class,
  8329. learnpathItem::class,
  8330. aiccItem::class,
  8331. scormItem::class,
  8332. Link::class,
  8333. LpItem::class,
  8334. ];
  8335. break;
  8336. case 'course':
  8337. $allowedClasses = [
  8338. Course::class,
  8339. Announcement::class,
  8340. Attendance::class,
  8341. CalendarEvent::class,
  8342. CourseCopyLearnpath::class,
  8343. CourseCopyTestCategory::class,
  8344. CourseDescription::class,
  8345. CourseSession::class,
  8346. Document::class,
  8347. Forum::class,
  8348. ForumCategory::class,
  8349. ForumPost::class,
  8350. ForumTopic::class,
  8351. Glossary::class,
  8352. GradeBookBackup::class,
  8353. Link::class,
  8354. LinkCategory::class,
  8355. Quiz::class,
  8356. QuizQuestion::class,
  8357. QuizQuestionOption::class,
  8358. ScormDocument::class,
  8359. Survey::class,
  8360. SurveyInvitation::class,
  8361. SurveyQuestion::class,
  8362. Thematic::class,
  8363. ToolIntro::class,
  8364. Wiki::class,
  8365. Work::class,
  8366. stdClass::class,
  8367. ];
  8368. break;
  8369. case 'not_allowed_classes':
  8370. default:
  8371. $allowedClasses = false;
  8372. }
  8373. if ($ignoreErrors) {
  8374. return @Unserialize::unserialize(
  8375. $serialized,
  8376. ['allowed_classes' => $allowedClasses]
  8377. );
  8378. }
  8379. return Unserialize::unserialize(
  8380. $serialized,
  8381. ['allowed_classes' => $allowedClasses]
  8382. );
  8383. }