upload.php 21 KB

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  1. <?php // $Id: upload.php 22201 2009-07-17 19:57:03Z cfasanando $
  2. /*
  3. ==============================================================================
  4. Dokeos - elearning and course management software
  5. Copyright (c) 2004-2005 Dokeos S.A.
  6. Copyright (c) 2003 Ghent University (UGent)
  7. Copyright (c) 2001 Universite catholique de Louvain (UCL)
  8. Copyright (c) various contributors
  9. For a full list of contributors, see "credits.txt".
  10. The full license can be read in "license.txt".
  11. This program is free software; you can redistribute it and/or
  12. modify it under the terms of the GNU General Public License
  13. as published by the Free Software Foundation; either version 2
  14. of the License, or (at your option) any later version.
  15. See the GNU General Public License for more details.
  16. Contact: Dokeos, 181 rue Royale, B-1000 Brussels, Belgium, info@dokeos.com
  17. ==============================================================================
  18. */
  19. /**
  20. ==============================================================================
  21. * Main script for the documents tool
  22. *
  23. * This script allows the user to manage files and directories on a remote http server.
  24. *
  25. * The user can : - navigate through files and directories.
  26. * - upload a file
  27. * - delete, copy a file or a directory
  28. * - edit properties & content (name, comments, html content)
  29. *
  30. * The script is organised in four sections.
  31. *
  32. * 1) Execute the command called by the user
  33. * Note: somme commands of this section are organised in two steps.
  34. * The script always begins with the second step,
  35. * so it allows to return more easily to the first step.
  36. *
  37. * Note (March 2004) some editing functions (renaming, commenting)
  38. * are moved to a separate page, edit_document.php. This is also
  39. * where xml and other stuff should be added.
  40. *
  41. * 2) Define the directory to display
  42. *
  43. * 3) Read files and directories from the directory defined in part 2
  44. * 4) Display all of that on an HTML page
  45. *
  46. * @todo eliminate code duplication between
  47. * document/document.php, scormdocument.php
  48. *
  49. * @package dokeos.document
  50. ==============================================================================
  51. */
  52. // name of the language file that needs to be included
  53. $language_file = 'document';
  54. // including the global Dokeos file
  55. require_once "../inc/global.inc.php";
  56. // including additional libraries
  57. require_once api_get_path(LIBRARY_PATH) . 'fileUpload.lib.php';
  58. require_once api_get_path(LIBRARY_PATH) . 'document.lib.php';
  59. require_once api_get_path(LIBRARY_PATH) . 'specific_fields_manager.lib.php';
  60. require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
  61. require_once 'document.inc.php';
  62. // adding extra javascript to the form
  63. $htmlHeadXtra[] =
  64. "<script type=\"text/javascript\">
  65. <!-- //
  66. function check_unzip() {
  67. if(document.upload.unzip.checked==true){
  68. document.upload.if_exists[0].disabled=true;
  69. document.upload.if_exists[1].checked=true;
  70. document.upload.if_exists[2].disabled=true;
  71. }
  72. else {
  73. document.upload.if_exists[0].checked=true;
  74. document.upload.if_exists[0].disabled=false;
  75. document.upload.if_exists[2].disabled=false;
  76. }
  77. }
  78. // -->
  79. </script>";
  80. /**
  81. * Obtains the text inside the file with the right parser
  82. */
  83. function get_text_content($doc_path, $doc_mime) {
  84. // TODO: review w$ compatibility
  85. // use usual exec output lines array to store stdout instead of a temp file
  86. // because we need to store it at RAM anyway before index on DokeosIndexer object
  87. $ret_val = NULL;
  88. switch ($doc_mime) {
  89. case 'text/plain':
  90. $handle = fopen($doc_path, "r");
  91. $output = array(fread($handle, filesize($doc_path)));
  92. fclose($handle);
  93. break;
  94. case 'application/pdf':
  95. exec("pdftotext $doc_path -", $output, $ret_val);
  96. break;
  97. case 'application/postscript':
  98. $temp_file = tempnam(sys_get_temp_dir(), 'dokeos');
  99. exec("ps2pdf $doc_path $temp_file", $output, $ret_val);
  100. if ($ret_val !== 0) { // shell fail, probably 127 (command not found)
  101. return FALSE;
  102. }
  103. exec("pdftotext $temp_file -", $output, $ret_val);
  104. unlink($temp_file);
  105. var_dump($output);
  106. break;
  107. case 'application/msword':
  108. exec("catdoc $doc_path", $output, $ret_val);
  109. var_dump($output);
  110. break;
  111. case 'text/html':
  112. exec("html2text $doc_path", $output, $ret_val);
  113. break;
  114. case 'text/rtf':
  115. // note: correct handling of code pages in unrtf
  116. // on debian lenny unrtf v0.19.2 can not, but unrtf v0.20.5 can
  117. exec("unrtf --text $doc_path", $output, $ret_val);
  118. if ($ret_val == 127) { // command not found
  119. return FALSE;
  120. }
  121. // avoid index unrtf comments
  122. if (is_array($output) && count($output)>1) {
  123. $parsed_output = array();
  124. foreach ($output as $line) {
  125. if (!preg_match('/^###/', $line, $matches)) {
  126. if (!empty($line)) {
  127. $parsed_output[] = $line;
  128. }
  129. }
  130. }
  131. $output = $parsed_output;
  132. }
  133. break;
  134. case 'application/vnd.ms-powerpoint':
  135. exec("catppt $doc_path", $output, $ret_val);
  136. break;
  137. case 'application/vnd.ms-excel':
  138. exec("xls2csv -c\" \" $doc_path", $output, $ret_val);
  139. break;
  140. }
  141. $content = '';
  142. if (!is_null($ret_val)) {
  143. if ($ret_val !== 0) { // shell fail, probably 127 (command not found)
  144. return FALSE;
  145. }
  146. }
  147. if (isset($output)) {
  148. foreach ( $output as $line ) {
  149. $content .= $line ."\n";
  150. }
  151. return $content;
  152. }
  153. else {
  154. return FALSE;
  155. }
  156. }
  157. // variables
  158. $is_allowed_to_edit = api_is_allowed_to_edit();
  159. $courseDir = $_course['path']."/document";
  160. $sys_course_path = api_get_path(SYS_COURSE_PATH);
  161. $base_work_dir = $sys_course_path.$courseDir;
  162. $noPHP_SELF=true;
  163. //this needs cleaning!
  164. if(isset($_SESSION['_gid']) && $_SESSION['_gid']!='') //if the group id is set, check if the user has the right to be here
  165. {
  166. //needed for group related stuff
  167. require_once api_get_path(LIBRARY_PATH).'groupmanager.lib.php';
  168. //get group info
  169. $group_properties = GroupManager::get_group_properties($_SESSION['_gid']);
  170. $noPHP_SELF=true;
  171. if($is_allowed_to_edit || GroupManager::is_user_in_group($_user['user_id'],$_SESSION['_gid'])) //only courseadmin or group members allowed
  172. {
  173. $to_group_id = $_SESSION['_gid'];
  174. $req_gid = '&amp;gidReq='.$_SESSION['_gid'];
  175. $interbreadcrumb[]= array ("url"=>"../group/group_space.php?gidReq=".$_SESSION['_gid'], "name"=> get_lang('GroupSpace'));
  176. }
  177. else
  178. {
  179. api_not_allowed(true);
  180. }
  181. }
  182. elseif($is_allowed_to_edit) //admin for "regular" upload, no group documents
  183. {
  184. $to_group_id = 0;
  185. $req_gid = '';
  186. }
  187. else //no course admin and no group member...
  188. {
  189. api_not_allowed(true);
  190. }
  191. //what's the current path?
  192. if(isset($_GET['path']) && $_GET['path']!='')
  193. {
  194. $path = $_GET['path'];
  195. }
  196. elseif (isset($_POST['curdirpath']))
  197. {
  198. $path = $_POST['curdirpath'];
  199. }
  200. else
  201. {
  202. $path = '/';
  203. }
  204. //check the path: if the path is not found (no document id), set the path to /
  205. if(!DocumentManager::get_document_id($_course,$path))
  206. {
  207. $path = '/';
  208. }
  209. //group docs can only be uploaded in the group directory
  210. if($to_group_id!=0 && $path=='/')
  211. {
  212. $path = $group_properties['directory'];
  213. }
  214. //if we want to unzip a file, we need the library
  215. if (isset($_POST['unzip']) && $_POST['unzip'] == 1)
  216. {
  217. require_once api_get_path(LIBRARY_PATH).'pclzip/pclzip.lib.php';
  218. }
  219. // variables
  220. $max_filled_space = DocumentManager::get_course_quota();
  221. // title of the tool
  222. if($to_group_id !=0) //add group name after for group documents
  223. {
  224. $add_group_to_title = ' ('.$group_properties['name'].')';
  225. }
  226. $nameTools = get_lang('UplUploadDocument').$add_group_to_title;
  227. // breadcrumbs
  228. $interbreadcrumb[] = array('url' =>'./document.php?curdirpath='.urlencode($path).$req_gid, 'name'=> get_lang('Documents'));
  229. // display the header
  230. Display::display_header($nameTools, 'Doc');
  231. /*
  232. -----------------------------------------------------------
  233. Here we do all the work
  234. -----------------------------------------------------------
  235. */
  236. //user has submitted a file
  237. if(isset($_FILES['user_upload']))
  238. {
  239. //echo("<pre>");
  240. //print_r($_FILES['user_upload']);
  241. //echo("</pre>");
  242. $upload_ok = process_uploaded_file($_FILES['user_upload']);
  243. if($upload_ok)
  244. {
  245. //file got on the server without problems, now process it
  246. $new_path = handle_uploaded_document($_course, $_FILES['user_upload'],$base_work_dir,$_POST['curdirpath'],$_user['user_id'],$to_group_id,$to_user_id,$max_filled_space,$_POST['unzip'],$_POST['if_exists']);
  247. $new_comment = isset($_POST['comment']) ? trim($_POST['comment']) : '';
  248. $new_title = isset($_POST['title']) ? trim($_POST['title']) : '';
  249. if ($new_path && ($new_comment || $new_title))
  250. if (($docid = DocumentManager::get_document_id($_course, $new_path)))
  251. {
  252. $table_document = Database::get_course_table(TABLE_DOCUMENT);
  253. $ct = '';
  254. if ($new_comment) $ct .= ", comment='$new_comment'";
  255. if ($new_title) $ct .= ", title='$new_title'";
  256. api_sql_query("UPDATE $table_document SET" . substr($ct, 1) .
  257. " WHERE id = '$docid'", __FILE__, __LINE__);
  258. }
  259. if ( (api_get_setting('search_enabled')=='true') && ($docid = DocumentManager::get_document_id($_course, $new_path))) {
  260. $table_document = Database::get_course_table(TABLE_DOCUMENT);
  261. $result = api_sql_query("SELECT * FROM $table_document WHERE id = '$docid' LIMIT 1", __FILE__, __LINE__);
  262. if (Database::num_rows($result) == 1) {
  263. $row = Database::fetch_array($result);
  264. $doc_path = api_get_path(SYS_COURSE_PATH) . $courseDir. $row['path'];
  265. //TODO: mime_content_type is deprecated, fileinfo php extension is enabled by default as of PHP 5.3.0
  266. // now versions of PHP on Debian testing(5.2.6-5) and Ubuntu(5.2.6-2ubuntu) are lower, so wait for a while
  267. $doc_mime = mime_content_type($doc_path);
  268. //echo $doc_mime;
  269. //TODO: more mime types
  270. $allowed_mime_types = array('text/plain', 'application/pdf', 'application/postscript', 'application/msword', 'text/html', 'text/rtf', 'application/vnd.ms-powerpoint', 'application/vnd.ms-excel');
  271. // mime_content_type does not detect correctly some formats that are going to be supported for index, so an extensions array is used by the moment
  272. if (empty($doc_mime)) {
  273. $allowed_extensions = array('ppt', 'pps', 'xls');
  274. $extensions = preg_split("/[\/\\.]/", $doc_path) ;
  275. $doc_ext = strtolower($extensions[count($extensions)-1]);
  276. if (in_array($doc_ext, $allowed_extensions)) {
  277. switch ($doc_ext) {
  278. case 'ppt':
  279. case 'pps':
  280. $doc_mime = 'application/vnd.ms-powerpoint';
  281. break;
  282. case 'xls':
  283. $doc_mime = 'application/vnd.ms-excel';
  284. break;
  285. }
  286. }
  287. }
  288. if (in_array($doc_mime, $allowed_mime_types) && isset($_POST['index_document']) && $_POST['index_document']) {
  289. $file_title = $row['title'];
  290. $file_content = get_text_content($doc_path, $doc_mime);
  291. $courseid = api_get_course_id();
  292. isset($_POST['language'])? $lang=Database::escape_string($_POST['language']): $lang = 'english';
  293. require_once api_get_path(LIBRARY_PATH).'search/DokeosIndexer.class.php';
  294. require_once api_get_path(LIBRARY_PATH).'search/IndexableChunk.class.php';
  295. $ic_slide = new IndexableChunk();
  296. $ic_slide->addValue("title", $file_title);
  297. $ic_slide->addCourseId($courseid);
  298. $ic_slide->addToolId(TOOL_DOCUMENT);
  299. $xapian_data = array(
  300. SE_COURSE_ID => $courseid,
  301. SE_TOOL_ID => TOOL_DOCUMENT,
  302. SE_DATA => array('doc_id' => (int)$docid),
  303. SE_USER => (int)api_get_user_id(),
  304. );
  305. $ic_slide->xapian_data = serialize($xapian_data);
  306. $di = new DokeosIndexer();
  307. $di->connectDb(NULL, NULL, $lang);
  308. $specific_fields = get_specific_field_list();
  309. // process different depending on what to do if file exists
  310. /**
  311. * FIXME: Find a way to really verify if the file had been
  312. * overwriten. Now all work is done at
  313. * handle_uploaded_document() and it's difficult to verify it
  314. */
  315. if (!empty($_POST['if_exists']) && $_POST['if_exists'] == 'overwrite') {
  316. // overwrite the file on search engine
  317. // actually, it consists on delete terms from db, insert new ones, create a new search engine document, and remove the old one
  318. // get search_did
  319. $tbl_se_ref = Database::get_main_table(TABLE_MAIN_SEARCH_ENGINE_REF);
  320. $sql = 'SELECT * FROM %s WHERE course_code=\'%s\' AND tool_id=\'%s\' AND ref_id_high_level=%s LIMIT 1';
  321. $sql = sprintf($sql, $tbl_se_ref, $courseid, TOOL_DOCUMENT, $docid);
  322. $res = api_sql_query($sql, __FILE__, __LINE__);
  323. if (Database::num_rows($res) > 0) {
  324. $se_ref = Database::fetch_array($res);
  325. $di->remove_document((int)$se_ref['search_did']);
  326. $all_specific_terms = '';
  327. foreach ($specific_fields as $specific_field) {
  328. delete_all_specific_field_value($courseid, $specific_field['id'], TOOL_DOCUMENT, $docid);
  329. //update search engine
  330. $sterms = trim($_REQUEST[$specific_field['code']]);
  331. $all_specific_terms .= ' '. $sterms;
  332. $sterms = explode(',', $sterms);
  333. foreach ($sterms as $sterm) {
  334. $sterm = trim($sterm);
  335. if (!empty($sterm)) {
  336. $ic_slide->addTerm($sterm, $specific_field['code']);
  337. add_specific_field_value($specific_field['id'], $courseid, TOOL_DOCUMENT, $docid, $value);
  338. }
  339. }
  340. }
  341. // add terms also to content to make terms findable by probabilistic search
  342. $file_content = $all_specific_terms .' '. $file_content;
  343. $ic_slide->addValue("content", $file_content);
  344. $di->addChunk($ic_slide);
  345. //index and return a new search engine document id
  346. $did = $di->index();
  347. if ($did) {
  348. // update the search_did on db
  349. $tbl_se_ref = Database::get_main_table(TABLE_MAIN_SEARCH_ENGINE_REF);
  350. $sql = 'UPDATE %s SET search_did=%d WHERE id=%d LIMIT 1';
  351. $sql = sprintf($sql, $tbl_se_ref, (int)$did, (int)$se_ref['id']);
  352. api_sql_query($sql,__FILE__,__LINE__);
  353. }
  354. }
  355. }
  356. else {
  357. // add all terms
  358. $all_specific_terms = '';
  359. foreach ($specific_fields as $specific_field) {
  360. if (isset($_REQUEST[$specific_field['code']])) {
  361. $sterms = trim($_REQUEST[$specific_field['code']]);
  362. $all_specific_terms .= ' '. $sterms;
  363. if (!empty($sterms)) {
  364. $sterms = explode(',', $sterms);
  365. foreach ($sterms as $sterm) {
  366. $ic_slide->addTerm(trim($sterm), $specific_field['code']);
  367. add_specific_field_value($specific_field['id'], $courseid, TOOL_DOCUMENT, $docid, $sterm);
  368. }
  369. }
  370. }
  371. }
  372. // add terms also to content to make terms findable by probabilistic search
  373. $file_content = $all_specific_terms .' '. $file_content;
  374. $ic_slide->addValue("content", $file_content);
  375. $di->addChunk($ic_slide);
  376. //index and return search engine document id
  377. $did = $di->index();
  378. if ($did) {
  379. // save it to db
  380. $tbl_se_ref = Database::get_main_table(TABLE_MAIN_SEARCH_ENGINE_REF);
  381. $sql = 'INSERT INTO %s (id, course_code, tool_id, ref_id_high_level, search_did)
  382. VALUES (NULL , \'%s\', \'%s\', %s, %s)';
  383. $sql = sprintf($sql, $tbl_se_ref, $courseid, TOOL_DOCUMENT, $docid, $did);
  384. api_sql_query($sql,__FILE__,__LINE__);
  385. }
  386. }
  387. }
  388. }
  389. }
  390. //check for missing images in html files
  391. $missing_files = check_for_missing_files($base_work_dir.$new_path);
  392. if($missing_files)
  393. {
  394. //show a form to upload the missing files
  395. Display::display_normal_message(build_missing_files_form($missing_files,$_POST['curdirpath'],$_FILES['user_upload']['name']),false);
  396. }
  397. }
  398. }
  399. //missing images are submitted
  400. if(isset($_POST['submit_image']))
  401. {
  402. $number_of_uploaded_images = count($_FILES['img_file']['name']);
  403. //if images are uploaded
  404. if ($number_of_uploaded_images > 0)
  405. {
  406. //we could also create a function for this, I'm not sure...
  407. //create a directory for the missing files
  408. $img_directory = str_replace('.','_',$_POST['related_file']."_files");
  409. $missing_files_dir = create_unexisting_directory($_course,$_user['user_id'],$to_group_id,$to_user_id,$base_work_dir,$img_directory);
  410. //put the uploaded files in the new directory and get the paths
  411. $paths_to_replace_in_file = move_uploaded_file_collection_into_directory($_course, $_FILES['img_file'],$base_work_dir,$missing_files_dir,$_user['user_id'],$to_group_id,$to_user_id,$max_filled_space);
  412. //open the html file and replace the paths
  413. replace_img_path_in_html_file($_POST['img_file_path'],$paths_to_replace_in_file,$base_work_dir.$_POST['related_file']);
  414. //update parent folders
  415. item_property_update_on_folder($_course,$_POST['curdirpath'],$_user['user_id']);
  416. }
  417. }
  418. //they want to create a directory
  419. if(isset($_POST['create_dir']) && $_POST['dirname']!='')
  420. {
  421. $added_slash = ($path=='/')?'':'/';
  422. $dir_name = $path.$added_slash.replace_dangerous_char($_POST['dirname']);
  423. $created_dir = create_unexisting_directory($_course,$_user['user_id'],$to_group_id,$to_user_id,$base_work_dir,$dir_name,$_POST['dirname']);
  424. if($created_dir)
  425. {
  426. Display::display_confirmation_message(get_lang('DirCr'),false);
  427. $path = $created_dir;
  428. }
  429. else
  430. {
  431. display_error(get_lang('CannotCreateDir'));
  432. }
  433. }
  434. //tracking not needed here?
  435. //event_access_tool(TOOL_DOCUMENT);
  436. /*============================================================================*/
  437. ?>
  438. <?php
  439. //=======================================//
  440. //they want to create a new directory//
  441. //=======================================//
  442. if(isset($_GET['createdir']))
  443. {
  444. //create the form that asks for the directory name
  445. $new_folder_text = '<form action="'.api_get_self().'" method="POST">';
  446. $new_folder_text .= '<input type="hidden" name="curdirpath" value="'.$path.'"/>';
  447. $new_folder_text .= get_lang('NewDir') .' ';
  448. $new_folder_text .= '<input type="text" name="dirname"/>';
  449. $new_folder_text .= '<button type="submit" class="save" name="create_dir">'.get_lang('CreateFolder').'</button>';
  450. $new_folder_text .= '</form>';
  451. //show the form
  452. //Display::display_normal_message($new_folder_text, false);
  453. echo create_dir_form();
  454. }
  455. // actions
  456. echo '<div class="actions">';
  457. // link back to the documents overview
  458. echo '<a href="document.php?curdirpath='.$path.'">'.Display::return_icon('back.png',get_lang('Back').' '.get_lang('To').' '.get_lang('DocumentsOverview')).get_lang('Back').' '.get_lang('To').' '.get_lang('DocumentsOverview').'</a>';
  459. // link to create a folder
  460. if(!isset($_GET['createdir']))
  461. {
  462. echo '<a href="'.api_get_self().'?path='.$path.'&amp;createdir=1">'.Display::return_icon('folder_new.gif', get_lang('CreateDir')).get_lang('CreateDir').'</a>';
  463. }
  464. echo '</div>';
  465. //form to select directory
  466. $folders = DocumentManager::get_all_document_folders($_course,$to_group_id,$is_allowed_to_edit);
  467. echo(build_directory_selector($folders,$path,$group_properties['directory']));
  468. ?>
  469. <!-- start upload form -->
  470. <?php
  471. $form = new FormValidator('upload','POST',api_get_self(),'','enctype="multipart/form-data"');
  472. // form title
  473. $form->addElement('header', '', $nameTools);
  474. $form->addElement('hidden','curdirpath',$path);
  475. $form->addElement('file','user_upload',get_lang('File'),'id="user_upload" size="45"');
  476. if(api_get_setting('use_document_title')=='true')
  477. {
  478. $form->addElement('text','title',get_lang('Title'),'size="20" style="width:300px;"');
  479. $form->addElement('textarea','comment',get_lang('Comment'),'wrap="virtual" style="width:300px;"');
  480. }
  481. $form->addElement('checkbox','unzip',get_lang('Options'),get_lang('Uncompress'),'onclick="check_unzip()" value="1"');
  482. if(api_get_setting('search_enabled')=='true')
  483. {
  484. //TODO: include language file
  485. $supported_formats = 'Supported formats for index: Text plain, PDF, Postscript, MS Word, HTML, RTF, MS Power Point';
  486. $form -> addElement ('checkbox', 'index_document','', get_lang('SearchFeatureDoIndexDocument') . '<div style="font-size: 80%" >'. $supported_formats .'</div>');
  487. $form -> addElement ('html','<br /><div class="row">');
  488. $form -> addElement ('html', '<div class="label">'. get_lang('SearchFeatureDocumentLanguage') .'</div>');
  489. $form -> addElement ('html', '<div class="formw">'. api_get_languages_combo() .'</div>');
  490. $form -> addElement ('html','</div><div class="sub-form">');
  491. $specific_fields = get_specific_field_list();
  492. foreach ($specific_fields as $specific_field) {
  493. $form -> addElement ('text', $specific_field['code'], $specific_field['name'].' : ');
  494. }
  495. $form -> addElement ('html','</div>');
  496. }
  497. $form->addElement('radio', 'if_exists', get_lang('UplWhatIfFileExists'), get_lang('UplDoNothing'), 'nothing');
  498. $form->addElement('radio', 'if_exists', '', get_lang('UplOverwriteLong'), 'overwrite');
  499. $form->addElement('radio', 'if_exists', '', get_lang('UplRenameLong'), 'rename');
  500. $form->addElement('style_submit_button', 'submitDocument', get_lang('SendDocument'),'class="upload"');
  501. $form->add_real_progress_bar('DocumentUpload','user_upload');
  502. $defaults = array('index_document'=>'checked="checked"');
  503. $form->setDefaults($defaults);
  504. $form->display();
  505. ?>
  506. <!-- end upload form -->
  507. <?php
  508. // footer
  509. Display::display_footer();
  510. ?>