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- <?php
- /* For licensing terms, see /license.txt */
- /**
- * This is the document library for Chamilo.
- * It is / will be used to provide a service layer to all document-using tools.
- * and eliminate code duplication fro group documents, scorm documents, main documents.
- * Include/require it in your code to use its functionality.
- *
- * @package chamilo.library
- */
- /**
- * Code
- */
- /* CONSTANTS */
- define('DISK_QUOTA_FIELD', 'disk_quota'); //name of the database field
- //Default quota for the course documents folder
- $default_quota = api_get_setting('default_document_quotum');
- //Just in case the setting is not correctly set
- if (empty($default_quota)) {
- $default_quota = 100000000;
- }
- define('DEFAULT_DOCUMENT_QUOTA', $default_quota);
- /**
- * @package chamilo.library
- */
- class DocumentManager {
- private function __construct() {
- }
- /**
- * @return the document folder quota for the current course, in bytes, or the default quota
- * @todo eliminate globals
- */
- public static function get_course_quota() {
- $course_info = api_get_course_info();
- if (empty($course_info)) {
- return DEFAULT_DOCUMENT_QUOTA;
- }
- $course_code = Database::escape_string($course_info['code']);
- $course_table = Database::get_main_table(TABLE_MAIN_COURSE);
- $sql_query = "SELECT ".DISK_QUOTA_FIELD." FROM $course_table WHERE code = '$course_code'";
- $sql_result = Database::query($sql_query);
- $course_quota = null;
- if (Database::num_rows($sql_result)) {
- $result = Database::fetch_array($sql_result);
- $course_quota = $result[DISK_QUOTA_FIELD];
- }
- if (is_null($course_quota) || empty($course_quota)) {
- // Course table entry for quota was null, then use default value
- $course_quota = DEFAULT_DOCUMENT_QUOTA;
- }
- return $course_quota;
- }
- /**
- * Get the content type of a file by checking the extension
- * We could use mime_content_type() with php-versions > 4.3,
- * but this doesn't work as it should on Windows installations
- *
- * @param string $filename or boolean TRUE to return complete array
- * @author ? first version
- * @author Bert Vanderkimpen
- *
- */
- public static function file_get_mime_type($filename) {
- // All MIME types in an array (from 1.6, this is the authorative source)
- // Please, keep this alphabetical if you add something to this list!
- $mime_types = array(
- 'ai' => 'application/postscript',
- 'aif' => 'audio/x-aiff',
- 'aifc' => 'audio/x-aiff',
- 'aiff' => 'audio/x-aiff',
- 'asf' => 'video/x-ms-asf',
- 'asc' => 'text/plain',
- 'au' => 'audio/basic',
- 'avi' => 'video/x-msvideo',
- 'bcpio' => 'application/x-bcpio',
- 'bin' => 'application/octet-stream',
- 'bmp' => 'image/bmp',
- 'cdf' => 'application/x-netcdf',
- 'class' => 'application/octet-stream',
- 'cpio' => 'application/x-cpio',
- 'cpt' => 'application/mac-compactpro',
- 'csh' => 'application/x-csh',
- 'css' => 'text/css',
- 'dcr' => 'application/x-director',
- 'dir' => 'application/x-director',
- 'djv' => 'image/vnd.djvu',
- 'djvu' => 'image/vnd.djvu',
- 'dll' => 'application/octet-stream',
- 'dmg' => 'application/x-diskcopy',
- 'dms' => 'application/octet-stream',
- 'doc' => 'application/msword',
- 'docm' => 'application/vnd.ms-word.document.macroEnabled.12',
- 'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
- 'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
- 'dvi' => 'application/x-dvi',
- 'dwg' => 'application/vnd.dwg',
- 'dxf' => 'application/vnd.dxf',
- 'dxr' => 'application/x-director',
- 'eps' => 'application/postscript',
- 'epub' => 'application/epub+zip',
- 'etx' => 'text/x-setext',
- 'exe' => 'application/octet-stream',
- 'ez' => 'application/andrew-inset',
- 'gif' => 'image/gif',
- 'gtar' => 'application/x-gtar',
- 'gz' => 'application/x-gzip',
- 'hdf' => 'application/x-hdf',
- 'hqx' => 'application/mac-binhex40',
- 'htm' => 'text/html',
- 'html' => 'text/html',
- 'ice' => 'x-conference-xcooltalk',
- 'ief' => 'image/ief',
- 'iges' => 'model/iges',
- 'igs' => 'model/iges',
- 'jar' => 'application/java-archiver',
- 'jpe' => 'image/jpeg',
- 'jpeg' => 'image/jpeg',
- 'jpg' => 'image/jpeg',
- 'js' => 'application/x-javascript',
- 'kar' => 'audio/midi',
- 'lam' => 'application/vnd.ms-excel.addin.macroEnabled.12',
- 'latex' => 'application/x-latex',
- 'lha' => 'application/octet-stream',
- 'log' => 'text/plain',
- 'lzh' => 'application/octet-stream',
- 'm1a' => 'audio/mpeg',
- 'm2a' => 'audio/mpeg',
- 'm3u' => 'audio/x-mpegurl',
- 'man' => 'application/x-troff-man',
- 'me' => 'application/x-troff-me',
- 'mesh' => 'model/mesh',
- 'mid' => 'audio/midi',
- 'midi' => 'audio/midi',
- 'mov' => 'video/quicktime',
- 'movie' => 'video/x-sgi-movie',
- 'mp2' => 'audio/mpeg',
- 'mp3' => 'audio/mpeg',
- 'mp4' => 'video/mpeg4-generic',
- 'mpa' => 'audio/mpeg',
- 'mpe' => 'video/mpeg',
- 'mpeg' => 'video/mpeg',
- 'mpg' => 'video/mpeg',
- 'mpga' => 'audio/mpeg',
- 'ms' => 'application/x-troff-ms',
- 'msh' => 'model/mesh',
- 'mxu' => 'video/vnd.mpegurl',
- 'nc' => 'application/x-netcdf',
- 'oda' => 'application/oda',
- 'oga'=> 'audio/ogg',
- 'ogg'=> 'application/ogg',
- 'ogx'=> 'application/ogg',
- 'ogv'=> 'video/ogg',
- 'pbm' => 'image/x-portable-bitmap',
- 'pct' => 'image/pict',
- 'pdb' => 'chemical/x-pdb',
- 'pdf' => 'application/pdf',
- 'pgm' => 'image/x-portable-graymap',
- 'pgn' => 'application/x-chess-pgn',
- 'pict' => 'image/pict',
- 'png' => 'image/png',
- 'pnm' => 'image/x-portable-anymap',
- 'potm' => 'application/vnd.ms-powerpoint.template.macroEnabled.12',
- 'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
- 'pps' => 'application/vnd.ms-powerpoint',
- 'ppam' => 'application/vnd.ms-powerpoint.addin.macroEnabled.12',
- 'ppsm' => 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12',
- 'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
- 'pptm' => 'application/vnd.ms-powerpoint.presentation.macroEnabled.12',
- 'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
- 'ppm' => 'image/x-portable-pixmap',
- 'ppt' => 'application/vnd.ms-powerpoint',
- 'pps' => 'application/vnd.ms-powerpoint',
- 'ps' => 'application/postscript',
- 'qt' => 'video/quicktime',
- 'ra' => 'audio/x-realaudio',
- 'ram' => 'audio/x-pn-realaudio',
- 'rar' => 'image/x-rar-compressed',
- 'ras' => 'image/x-cmu-raster',
- 'rgb' => 'image/x-rgb',
- 'rm' => 'audio/x-pn-realaudio',
- 'roff' => 'application/x-troff',
- 'rpm' => 'audio/x-pn-realaudio-plugin',
- 'rtf' => 'text/rtf',
- 'rtx' => 'text/richtext',
- 'sgm' => 'text/sgml',
- 'sgml' => 'text/sgml',
- 'sh' => 'application/x-sh',
- 'shar' => 'application/x-shar',
- 'silo' => 'model/mesh',
- 'sib' => 'application/X-Sibelius-Score',
- 'sit' => 'application/x-stuffit',
- 'skd' => 'application/x-koan',
- 'skm' => 'application/x-koan',
- 'skp' => 'application/x-koan',
- 'skt' => 'application/x-koan',
- 'smi' => 'application/smil',
- 'smil' => 'application/smil',
- 'snd' => 'audio/basic',
- 'so' => 'application/octet-stream',
- 'spl' => 'application/x-futuresplash',
- 'src' => 'application/x-wais-source',
- 'sv4cpio' => 'application/x-sv4cpio',
- 'sv4crc' => 'application/x-sv4crc',
- 'svf' => 'application/vnd.svf',
- 'svg' => 'image/svg+xml',
- //'svgz' => 'image/svg+xml',
- 'swf' => 'application/x-shockwave-flash',
- 'sxc' => 'application/vnd.sun.xml.calc',
- 'sxi' => 'application/vnd.sun.xml.impress',
- 'sxw' => 'application/vnd.sun.xml.writer',
- 't' => 'application/x-troff',
- 'tar' => 'application/x-tar',
- 'tcl' => 'application/x-tcl',
- 'tex' => 'application/x-tex',
- 'texi' => 'application/x-texinfo',
- 'texinfo' => 'application/x-texinfo',
- 'tga' => 'image/x-targa',
- 'tif' => 'image/tif',
- 'tiff' => 'image/tiff',
- 'tr' => 'application/x-troff',
- 'tsv' => 'text/tab-seperated-values',
- 'txt' => 'text/plain',
- 'ustar' => 'application/x-ustar',
- 'vcd' => 'application/x-cdlink',
- 'vrml' => 'model/vrml',
- 'wav' => 'audio/x-wav',
- 'wbmp' => 'image/vnd.wap.wbmp',
- 'wbxml' => 'application/vnd.wap.wbxml',
- 'wml' => 'text/vnd.wap.wml',
- 'wmlc' => 'application/vnd.wap.wmlc',
- 'wmls' => 'text/vnd.wap.wmlscript',
- 'wmlsc' => 'application/vnd.wap.wmlscriptc',
- 'wma' => 'video/x-ms-wma',
- 'wmv' => 'audio/x-ms-wmv',
- 'wrl' => 'model/vrml',
- 'xbm' => 'image/x-xbitmap',
- 'xht' => 'application/xhtml+xml',
- 'xhtml' => 'application/xhtml+xml',
- 'xls' => 'application/vnd.ms-excel',
- 'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
- 'xlsm' => 'application/vnd.ms-excel.sheet.macroEnabled.12',
- 'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
- 'xltm' => 'application/vnd.ms-excel.template.macroEnabled.12',
- 'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
- 'xml' => 'text/xml',
- 'xpm' => 'image/x-xpixmap',
- 'xsl' => 'text/xml',
- 'xwd' => 'image/x-windowdump',
- 'xyz' => 'chemical/x-xyz',
- 'zip' => 'application/zip'
- );
- if ($filename === true) {
- return $mime_types;
- }
- //get the extension of the file
- $extension = explode('.', $filename);
- //$filename will be an array if a . was found
- if (is_array($extension)) {
- $extension = strtolower($extension[sizeof($extension) - 1]);
- }
- //file without extension
- else {
- $extension = 'empty';
- }
- //if the extension is found, return the content type
- if (isset($mime_types[$extension])) {
- return $mime_types[$extension];
- }
- //else return octet-stream
- return 'application/octet-stream';
- }
- /**
- * @return true if the user is allowed to see the document, false otherwise
- * @author Sergio A Kessler, first version
- * @author Roan Embrechts, bugfix
- * @todo ??not only check if a file is visible, but also check if the user is allowed to see the file??
- */
- public static function file_visible_to_user ($this_course, $doc_url) {
- $current_session_id = api_get_session_id();
- $is_allowed_to_edit = api_is_allowed_to_edit(null, true);
- if ($is_allowed_to_edit) {
- return true;
- } else {
- $tbl_document = Database::get_course_table(TABLE_DOCUMENT);
- $tbl_item_property = $this_course.'item_property';
- $doc_url = Database::escape_string($doc_url);
- //$doc_url = addslashes($doc_url);
- $query = "SELECT 1 FROM $tbl_document AS docs,$tbl_item_property AS props
- WHERE props.tool = 'document' AND docs.id=props.ref AND props.visibility <> '1' AND docs.path = '$doc_url'";
- //echo $query;
- $result = Database::query($query);
- return (Database::num_rows($result) == 0);
- }
- }
- /**
- * This function streams a file to the client
- *
- * @param string $full_file_name
- * @param boolean $forced
- * @param string $name
- * @return false if file doesn't exist, true if stream succeeded
- */
- public static function file_send_for_download($full_file_name, $forced = false, $name = '') {
- if (!is_file($full_file_name)) {
- return false;
- }
- $filename = ($name == '') ? basename($full_file_name) : replace_dangerous_char($name);
- $len = filesize($full_file_name);
- if ($forced) {
- //force the browser to save the file instead of opening it
- header('Content-type: application/octet-stream');
- //header('Content-Type: application/force-download');
- header('Content-length: '.$len);
- if (preg_match("/MSIE 5.5/", $_SERVER['HTTP_USER_AGENT'])) {
- header('Content-Disposition: filename= '.$filename);
- } else {
- header('Content-Disposition: attachment; filename= '.$filename);
- }
- if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE')) {
- header('Pragma: ');
- header('Cache-Control: ');
- header('Cache-Control: public'); // IE cannot download from sessions without a cache
- }
- header('Content-Description: '.$filename);
- header('Content-transfer-encoding: binary');
- $fp = fopen($full_file_name, 'r');
- fpassthru($fp);
- return true;
- } else {
- //no forced download, just let the browser decide what to do according to the mimetype
- $content_type = self::file_get_mime_type($filename);
- header('Expires: Wed, 01 Jan 1990 00:00:00 GMT');
- header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
- // Commented to avoid double caching declaration when playing with IE and HTTPS
- //header('Cache-Control: no-cache, must-revalidate');
- //header('Pragma: no-cache');
- switch ($content_type) {
- case 'text/html':
- $encoding = @api_detect_encoding_html(file_get_contents($full_file_name));
- if (!empty($encoding)) {
- $content_type .= '; charset='.$encoding;
- }
- break;
- case 'text/plain':
- $encoding = @api_detect_encoding(strip_tags(file_get_contents($full_file_name)));
- if (!empty($encoding)) {
- $content_type .= '; charset='.$encoding;
- }
- break;
- }
- header('Content-type: '.$content_type);
- header('Content-Length: '.$len);
- $user_agent = strtolower($_SERVER['HTTP_USER_AGENT']);
- if (strpos($user_agent, 'msie')) {
- header('Content-Disposition: ; filename= '.$filename);
- } else {
- header('Content-Disposition: inline; filename= '.$filename);
- }
- readfile($full_file_name);
- return true;
- }
- }
- /**
- * This function streams a string to the client for download.
- * You have to ensure that the calling script then stops processing (exit();)
- * otherwise it may cause subsequent use of the page to want to download
- * other pages in php rather than interpreting them.
- *
- * @param string The string contents
- * @param boolean Whether "save" mode is forced (or opening directly authorized)
- * @param string The name of the file in the end (including extension)
- * @return false if file doesn't exist, true if stream succeeded
- */
- public static function string_send_for_download($full_string, $forced = false, $name = '') {
- $filename = $name;
- $len = strlen($full_string);
- if ($forced) {
- //force the browser to save the file instead of opening it
- header('Content-type: application/octet-stream');
- //header('Content-Type: application/force-download');
- header('Content-length: '.$len);
- if (preg_match("/MSIE 5.5/", $_SERVER['HTTP_USER_AGENT'])) {
- header('Content-Disposition: filename= '.$filename);
- } else {
- header('Content-Disposition: attachment; filename= '.$filename);
- }
- if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE')) {
- header('Pragma: ');
- header('Cache-Control: ');
- header('Cache-Control: public'); // IE cannot download from sessions without a cache
- }
- header('Content-Description: '.$filename);
- header('Content-transfer-encoding: binary');
- //$fp = fopen($full_string, 'r');
- //fpassthru($fp);
- echo $full_string;
- return true;
- //You have to ensure that the calling script then stops processing (exit();)
- //otherwise it may cause subsequent use of the page to want to download
- //other pages in php rather than interpreting them.
- } else {
- //no forced download, just let the browser decide what to do according to the mimetype
- $content_type = self::file_get_mime_type($filename);
- header('Expires: Wed, 01 Jan 1990 00:00:00 GMT');
- header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
- header('Cache-Control: no-cache, must-revalidate');
- header('Pragma: no-cache');
- switch ($content_type) {
- case 'text/html':
- $encoding = @api_detect_encoding_html($full_string);
- if (!empty($encoding)) {
- $content_type .= '; charset='.$encoding;
- }
- break;
- case 'text/plain':
- $encoding = @api_detect_encoding(strip_tags($full_string));
- if (!empty($encoding)) {
- $content_type .= '; charset='.$encoding;
- }
- break;
- }
- header('Content-type: '.$content_type);
- header('Content-Length: '.$len);
- $user_agent = strtolower($_SERVER['HTTP_USER_AGENT']);
- if (strpos($user_agent, 'msie')) {
- header('Content-Disposition: ; filename= '.$filename);
- } else {
- header('Content-Disposition: inline; filename= '.$filename);
- }
- echo($full_string);
- //You have to ensure that the calling script then stops processing (exit();)
- //otherwise it may cause subsequent use of the page to want to download
- //other pages in php rather than interpreting them.
- return true;
- }
- }
- /**
- * Fetches all document data for the given user/group
- *
- * @param array $_course
- * @param string $path
- * @param int $to_group_id
- * @param int $to_user_id
- * @param boolean $can_see_invisible
- * @return array with all document data
- */
- public static function get_all_document_data($_course, $path = '/', $to_group_id = 0, $to_user_id = NULL, $can_see_invisible = false, $search = false) {
- $TABLE_ITEMPROPERTY = Database::get_course_table(TABLE_ITEM_PROPERTY);
- $TABLE_DOCUMENT = Database::get_course_table(TABLE_DOCUMENT);
- $TABLE_COURSE = Database::get_main_table(TABLE_MAIN_COURSE);
- //if to_user_id = NULL -> change query (IS NULL)
- //$to_user_id = (is_null($to_user_id)) ? 'IS NULL' : '= '.$to_user_id;
- if (!is_null($to_user_id)) {
- $to_field = 'last.to_user_id';
- $to_value = $to_user_id;
- } else {
- $to_field = 'last.to_group_id';
- $to_value = $to_group_id;
- }
- //escape underscores in the path so they don't act as a wildcard
- $path = Database::escape_string(str_replace('_', '\_', $path));
- $to_user_id = Database::escape_string($to_user_id);
- $to_value = Database::escape_string($to_value);
- //if they can't see invisible files, they can only see files with visibility 1
- //$visibility_bit = ' = 1';
- //if they can see invisible files, only deleted files (visibility 2) are filtered out
- //if ($can_see_invisible) {
- $visibility_bit = ' <> 2';
- //}
- //the given path will not end with a slash, unless it's the root '/'
- //so no root -> add slash
- $added_slash = ($path == '/') ? '' : '/';
- //condition for the session
- $current_session_id = api_get_session_id();
- $condition_session = " AND (id_session = '$current_session_id' OR id_session = '0')";
- if (!$can_see_invisible) {
- //$condition_session = " AND (id_session = '$current_session_id' ) ";
- }
- //condition for search (get ALL folders and documents)
- if ($search) {
- $sql = "SELECT docs.id, docs.filetype, docs.path, docs.title, docs.comment, docs.size, docs.readonly, docs.session_id, last.id_session item_property_session_id, last.lastedit_date, last.visibility, last.insert_user_id
- FROM ".$TABLE_ITEMPROPERTY." AS last, ".$TABLE_DOCUMENT." AS docs
- WHERE docs.id = last.ref
- AND last.tool = '".TOOL_DOCUMENT."'
- AND ".$to_field." = ".$to_value."
- AND last.visibility".$visibility_bit . $condition_session." AND
- docs.c_id = {$_course['real_id']} AND
- last.c_id = {$_course['real_id']} ";
- } else {
- $sql = "SELECT docs.id, docs.filetype, docs.path, docs.title, docs.comment, docs.size, docs.readonly, docs.session_id, last.id_session item_property_session_id, last.lastedit_date, last.visibility, last.insert_user_id
- FROM ".$TABLE_ITEMPROPERTY." AS last, ".$TABLE_DOCUMENT." AS docs
- WHERE docs.id = last.ref
- AND docs.path LIKE '".$path.$added_slash."%'
- AND docs.path NOT LIKE '".$path.$added_slash."%/%'
- AND last.tool = '".TOOL_DOCUMENT."'
- AND ".$to_field." = ".$to_value."
- AND last.visibility".$visibility_bit.$condition_session." AND
- docs.c_id = {$_course['real_id']} AND
- last.c_id = {$_course['real_id']} ";
- }
-
- $result = Database::query($sql);
- $doc_list = array();
- $document_data = array();
- $is_allowed_to_edit = api_is_allowed_to_edit(null, true);
- if ($result !== false && Database::num_rows($result) != 0) {
- while ($row = Database::fetch_array($result, 'ASSOC')) {
- if (api_is_coach()) {
- //Looking for course items that are invisible to hide it in the session
- if (in_array($row['id'], array_keys($doc_list))) {
- if ($doc_list[$row['id']]['item_property_session_id'] == 0 && $doc_list[$row['id']]['session_id'] == 0) {
- if ($doc_list[$row['id']]['visibility'] == 0) {
- unset($document_data[$row['id']]);
- continue;
- }
- }
- }
-
- $doc_list[$row['id']] = $row;
- }
- if (!api_is_coach() && !$is_allowed_to_edit) {
- $doc_list[] = $row;
- }
- if ($row['filetype'] == 'file' && pathinfo($row['path'], PATHINFO_EXTENSION) == 'html') {
- //Templates management
- $table_template = Database::get_main_table(TABLE_MAIN_TEMPLATES);
- $sql_is_template = "SELECT id FROM $table_template
- WHERE course_code='".$_course['id']."'
- AND user_id='".api_get_user_id()."'
- AND ref_doc='".$row['id']."'";
- $template_result = Database::query($sql_is_template);
- $row['is_template'] = (Database::num_rows($template_result) > 0) ? 1 : 0;
- }
- //just filling $document_data
- $document_data[$row['id']] = $row;
- }
-
- //Only for the student we filter the results see BT#1652
- if (!api_is_coach() && !$is_allowed_to_edit) {
- $ids_to_remove = array();
- $my_repeat_ids = $temp= array();
- //Selecting repetead ids
- foreach($doc_list as $row ) {
- if (in_array($row['id'], array_keys($temp))) {
- $my_repeat_ids[] = $row['id'];
- }
- $temp[$row['id']] = $row;
- }
- //@todo use the DocumentManager::is_visible function
-
- //Checking disponibility in a session
- foreach($my_repeat_ids as $id) {
- foreach($doc_list as $row ) {
- if ($id == $row['id']) {
- //var_dump($row['visibility'].' - '.$row['session_id'].' - '.$row['item_property_session_id']);
- if ($row['visibility'] == 0 && $row['item_property_session_id'] == 0) {
- $delete_repeated[$id] = true;
- }
- if ($row['visibility'] == 0 && $row['item_property_session_id'] != 0) {
- $delete_repeated[$id] = true;
- }
- }
- }
- }
- //var_dump($delete_repeated);
- foreach($doc_list as $key=>$row) {
- //&& !in_array($row['id'],$my_repeat_ids)
- //var_dump($row['id'].' - '.$row['visibility']);
- if (in_array($row['visibility'], array('0','2')) && !in_array($row['id'],$my_repeat_ids) ) {
- $ids_to_remove[] = $row['id'];
- unset($doc_list[$key]);
- }
- }
- //var_dump($ids_to_remove);
- foreach($document_data as $row) {
- if (in_array($row['id'], $ids_to_remove)) {
- unset($document_data[$row['id']]);
- }
- if (isset($delete_repeated[$row['id']]) && $delete_repeated[$row['id']]) {
- unset($document_data[$row['id']]);
- }
- }
-
- //Checking parents visibility
- $final_document_data = array();
- foreach($document_data as $row) {
- $is_visible = DocumentManager::check_visibility_tree($row['id'], $_course['code'], $current_session_id, api_get_user_id());
- if ($is_visible) {
- $final_document_data[$row['id']]=$row;
- }
- }
- } else {
- $final_document_data = $document_data;
- }
- return $final_document_data;
- } else {
- //display_error("Error getting document info from database (".Database::error().")!");
- return false;
- }
- }
- /**
- * Gets the paths of all folders in a course
- * can show all folders (exept for the deleted ones) or only visible ones
- * @param array $_course
- * @param boolean $can_see_invisible
- * @param int $to_group_id
- * @return array with paths
- */
- public static function get_all_document_folders ($_course, $to_group_id = '0', $can_see_invisible = false) {
- $TABLE_ITEMPROPERTY = Database::get_course_table(TABLE_ITEM_PROPERTY);
- $TABLE_DOCUMENT = Database::get_course_table(TABLE_DOCUMENT);
- $to_group_id = intval($to_group_id);
- if ($can_see_invisible) {
- //condition for the session
- $session_id = api_get_session_id();
- $condition_session = api_get_session_condition($session_id);
- $sql = "SELECT DISTINCT docs.id, path FROM ".$TABLE_ITEMPROPERTY." AS last, ".$TABLE_DOCUMENT." AS docs
- WHERE docs.id = last.ref AND
- docs.filetype = 'folder' AND
- last.tool = '".TOOL_DOCUMENT."' AND
- last.to_group_id = ".$to_group_id." AND
- last.visibility <> 2 $condition_session AND
- last.c_id = {$_course['real_id']} AND
- docs.c_id = {$_course['real_id']} ";
- $result = Database::query($sql);
- if ($result && Database::num_rows($result) != 0) {
- while ($row = Database::fetch_array($result, 'ASSOC')) {
- $document_folders[$row['id']] = $row['path'];
- }
- //sort($document_folders);
- natsort($document_folders);
- //return results
- return $document_folders;
- } else {
- return false;
- }
- } else {
- //no invisible folders
- //condition for the session
- $session_id = api_get_session_id();
- $condition_session = api_get_session_condition($session_id);
- //get visible folders
- $visible_sql = "SELECT DISTINCT docs.id, path
- FROM ".$TABLE_ITEMPROPERTY." AS last, ".$TABLE_DOCUMENT." AS docs
- WHERE docs.id = last.ref
- AND docs.filetype = 'folder'
- AND last.tool = '".TOOL_DOCUMENT."'
- AND last.to_group_id = ".$to_group_id."
- AND last.visibility = 1 $condition_session AND
- last.c_id = {$_course['real_id']} AND
- docs.c_id = {$_course['real_id']} ";
- $visibleresult = Database::query($visible_sql);
- while ($all_visible_folders = Database::fetch_array($visibleresult, 'ASSOC')) {
- $visiblefolders[$all_visible_folders['id']] = $all_visible_folders['path'];
- }
- //condition for the session
- $session_id = api_get_session_id();
- $condition_session = api_get_session_condition($session_id);
- //get invisible folders
- $invisible_sql = "SELECT DISTINCT docs.id, path
- FROM ".$TABLE_ITEMPROPERTY." AS last, ".$TABLE_DOCUMENT." AS docs
- WHERE docs.id = last.ref
- AND docs.filetype = 'folder'
- AND last.tool = '".TOOL_DOCUMENT."'
- AND last.to_group_id = ".$to_group_id."
- AND last.visibility = 0 $condition_session AND
- last.c_id = {$_course['real_id']} AND
- docs.c_id = {$_course['real_id']} ";
- $invisibleresult = Database::query($invisible_sql);
- while ($invisible_folders = Database::fetch_array($invisibleresult, 'ASSOC')) {
- //condition for the session
- $session_id = api_get_session_id();
- $condition_session = api_get_session_condition($session_id);
- //get visible folders in the invisible ones -> they are invisible too
- $folder_in_invisible_sql = "SELECT DISTINCT docs.id, path
- FROM ".$TABLE_ITEMPROPERTY." AS last, ".$TABLE_DOCUMENT." AS docs
- WHERE docs.id = last.ref
- AND docs.path LIKE '".Database::escape_string($invisible_folders['path'])."/%'
- AND docs.filetype = 'folder'
- AND last.tool = '".TOOL_DOCUMENT."'
- AND last.to_group_id = ".$to_group_id."
- AND last.visibility = 1 $condition_session AND
- last.c_id = {$_course['real_id']} AND
- docs.c_id = {$_course['real_id']} ";
- $folder_in_invisible_result = Database::query($folder_in_invisible_sql);
- while ($folders_in_invisible_folder = Database::fetch_array($folder_in_invisible_result, 'ASSOC')) {
- $invisiblefolders[$folders_in_invisible_folder['id']] = $folders_in_invisible_folder['path'];
- }
- }
-
- //if both results are arrays -> //calculate the difference between the 2 arrays -> only visible folders are left :)
- if (is_array($visiblefolders) && is_array($invisiblefolders)) {
- $document_folders = array_diff($visiblefolders, $invisiblefolders);
- natsort($document_folders);
- return $document_folders;
- } elseif (is_array($visiblefolders)) {
- //only visible folders found
- //sort($visiblefolders);
- natsort($visiblefolders);
- return $visiblefolders;
- } else {
- //no visible folders found
- return false;
- }
- }
- }
- /**
- * This check if a document has the readonly property checked, then see if the user
- * is the owner of this file, if all this is true then return true.
- *
- * @param array $_course
- * @param int $user_id id of the current user
- * @param string $file path stored in the database
- * @param int $document_id in case you dont have the file path ,insert the id of the file here and leave $file in blank ''
- * @return boolean true/false
- **/
- public static function check_readonly($_course, $user_id, $file,$document_id = '', $to_delete = false) {
- if (!(!empty($document_id) && is_numeric($document_id))) {
- $document_id = self::get_document_id($_course, $file);
- }
- $TABLE_PROPERTY = Database::get_course_table(TABLE_ITEM_PROPERTY);
- $TABLE_DOCUMENT = Database::get_course_table(TABLE_DOCUMENT);
- $course_id = $_course['real_id'];
-
- if ($to_delete) {
- if (self::is_folder($_course, $document_id)) {
- if (!empty($file)) {
- $path = Database::escape_string($file);
- $what_to_check_sql = "SELECT td.id, readonly, tp.insert_user_id FROM ".$TABLE_DOCUMENT." td , $TABLE_PROPERTY tp
- WHERE td.c_id = $course_id AND
- tp.c_id = $course_id AND
- tp.ref= td.id AND
- (path='".$path."' OR path LIKE BINARY '".$path."/%' ) ";
- //get all id's of documents that are deleted
- $what_to_check_result = Database::query($what_to_check_sql);
- if ($what_to_check_result && Database::num_rows($what_to_check_result) != 0) {
- // file with readonly set to 1 exist?
- $readonly_set = false;
- while ($row = Database::fetch_array($what_to_check_result)) {
- //query to delete from item_property table
- if ($row['readonly'] == 1) {
- if (!($row['insert_user_id'] == $user_id)) {
- $readonly_set = true;
- break;
- }
- }
- }
- if ($readonly_set) {
- return true;
- }
- }
- }
- return false;
- }
- }
- if (!empty($document_id)) {
- $sql= 'SELECT a.insert_user_id, b.readonly FROM '.$TABLE_PROPERTY.' a,'.$TABLE_DOCUMENT.' b
- WHERE
- a.c_id = $course_id AND
- b.c_id = $course_id AND
- a.ref = b.id and a.ref='.$document_id.' LIMIT 1';
- $resultans = Database::query($sql);
- $doc_details = Database ::fetch_array($resultans, 'ASSOC');
- if ($doc_details['readonly'] == 1) {
- return !($doc_details['insert_user_id'] == $user_id || api_is_platform_admin());
- }
- }
- return false;
- }
- /**
- * This check if a document is a folder or not
- * @param array $_course
- * @param int $document_id of the item
- * @return boolean true/false
- **/
- public static function is_folder($_course, $document_id) {
- $TABLE_DOCUMENT = Database::get_course_table(TABLE_DOCUMENT);
- $course_id = $_course['real_id'];
- $document_id = Database::escape_string($document_id);
- $result = Database::fetch_array(Database::query("SELECT filetype FROM $TABLE_DOCUMENT WHERE c_id = $course_id AND id= $document_id"), 'ASSOC');
- return $result['filetype'] == 'folder';
- }
- /**
- * This deletes a document by changing visibility to 2, renaming it to filename_DELETED_#id
- * Files/folders that are inside a deleted folder get visibility 2
- *
- * @param array $_course
- * @param string $path, path stored in the database
- * @param string ,$base_work_dir, path to the documents folder
- * @return boolean true/false
- * @todo now only files/folders in a folder get visibility 2, we should rename them too.
- */
- public static function delete_document($_course, $path, $base_work_dir) {
- $TABLE_DOCUMENT = Database :: get_course_table(TABLE_DOCUMENT);
- $TABLE_ITEMPROPERTY = Database :: get_course_table(TABLE_ITEM_PROPERTY);
-
- $course_id = $_course['real_id'];
-
- //first, delete the actual document...
- $document_id = self :: get_document_id($_course, $path);
- $new_path = $path.'_DELETED_'.$document_id;
- $current_session_id = api_get_session_id();
- if ($document_id) {
- if (api_get_setting('permanently_remove_deleted_files') == 'true') { //deleted files are *really* deleted
- $what_to_delete_sql = "SELECT id FROM ".$TABLE_DOCUMENT." WHERE c_id = $course_id AND path='".$path."' OR path LIKE BINARY '".$path."/%'";
- //get all id's of documents that are deleted
- $what_to_delete_result = Database::query($what_to_delete_sql);
- if ($what_to_delete_result && Database::num_rows($what_to_delete_result) != 0) {
- //needed to deleted medadata
- require_once api_get_path(SYS_CODE_PATH).'metadata/md_funcs.php';
- require_once api_get_path(LIBRARY_PATH).'fileManage.lib.php';
- $mdStore = new mdstore(true);
- //delete all item_property entries
- while ($row = Database::fetch_array($what_to_delete_result)) {
- //query to delete from item_property table
- //avoid wrong behavior
- //$remove_from_item_property_sql = "DELETE FROM ".$TABLE_ITEMPROPERTY." WHERE ref = ".$row['id']." AND tool='".TOOL_DOCUMENT."'";
- api_item_property_update($_course, TOOL_DOCUMENT, $row['id'], 'delete', api_get_user_id(), null, null, null, null, $current_session_id);
- //query to delete from document table
- $remove_from_document_sql = "DELETE FROM ".$TABLE_DOCUMENT." WHERE id = ".$row['id'];
- self::unset_document_as_template($row['id'], $_course, api_get_user_id());
- Database::query($remove_from_document_sql);
- //delete metadata
- $eid = 'Document'.'.'.$row['id'];
- $mdStore->mds_delete($eid);
- $mdStore->mds_delete_offspring($eid);
- }
- self::delete_document_from_search_engine(api_get_course_id(), $document_id);
- //delete documents, do it like this so metadata get's deleted too
- //update_db_info('delete', $path);
- //throw it away
- my_delete($base_work_dir.$path);
- return true;
- } else {
- return false;
- }
- } else { //set visibility to 2 and rename file/folder to qsdqsd_DELETED_#id
- if (api_item_property_update($_course, TOOL_DOCUMENT, $document_id, 'delete', api_get_user_id(), null, null, null, null, $current_session_id)) {
- if (is_file($base_work_dir.$path) || is_dir($base_work_dir.$path)) {
- if(rename($base_work_dir.$path, $base_work_dir.$new_path)) {
- self::unset_document_as_template($document_id, api_get_course_id(), api_get_user_id());
- $sql = "UPDATE $TABLE_DOCUMENT set path='".$new_path."' WHERE c_id = $course_id AND id='".$document_id."'";
- if (Database::query($sql)) {
- //if it is a folder it can contain files
- $sql = "SELECT id,path FROM ".$TABLE_DOCUMENT." WHERE c_id = $course_id AND path LIKE BINARY '".$path."/%'";
- $result = Database::query($sql);
- if ($result && Database::num_rows($result) > 0) {
- while ($deleted_items = Database::fetch_array($result, 'ASSOC')) {
- api_item_property_update($_course, TOOL_DOCUMENT, $deleted_items['id'], 'delete', api_get_user_id(),null,null,null,null,$current_session_id);
- //Change path of subfolders and documents in database
- $old_item_path = $deleted_items['path'];
- $new_item_path = $new_path.substr($old_item_path, strlen($path));
- /*
- // Trying to fix this bug FS#2681
- echo $base_work_dir.$old_item_path;
- echo "<br />";
- echo $base_work_dir.$new_item_path;
- echo "<br /><br />";
- rename($base_work_dir.$old_item_path, $base_work_dir.$new_item_path);
- */
- self::unset_document_as_template($deleted_items['id'], api_get_course_id(), api_get_user_id());
- $sql = "UPDATE $TABLE_DOCUMENT set path = '".$new_item_path."' WHERE id = ".$deleted_items['id'];
- Database::query($sql);
- }
- }
- self::delete_document_from_search_engine(api_get_course_id(), $document_id);
- return true;
- }
- } else {
- //Couldn't rename - file permissions problem?
- error_log(__FILE__.' '.__LINE__.': Error renaming '.$base_work_dir.$path.' to '.$base_work_dir.$new_path.'. This is probably due to file permissions',0);
- }
- } else {
- //echo $base_work_dir.$path;
- //The file or directory isn't there anymore (on the filesystem)
- // This means it has been removed externally. To prevent a
- // blocking error from happening, we drop the related items from the
- // item_property and the document table.
- error_log(__FILE__.' '.__LINE__.': System inconsistency detected. The file or directory '.$base_work_dir.$path.' seems to have been removed from the filesystem independently from the web platform. To restore consistency, the elements using the same path will be removed from the database',0);
- $sql = "SELECT id FROM $TABLE_DOCUMENT WHERE c_id = $course_id AND path='".$path."' OR path LIKE BINARY '".$path."/%'";
- $res = Database::query($sql);
- self::delete_document_from_search_engine(api_get_course_id(), $document_id);
- while ($row = Database::fetch_array($res)) {
- $sqlipd = "DELETE FROM $TABLE_ITEMPROPERTY WHERE ref = ".$row['id']." AND tool='".TOOL_DOCUMENT."'";
- $resipd = Database::query($sqlipd);
- self::unset_document_as_template($row['id'],api_get_course_id(), api_get_user_id());
- $sqldd = "DELETE FROM $TABLE_DOCUMENT WHERE id = ".$row['id'];
- $resdd = Database::query($sqldd);
- }
- }
- }
- }
- }
- return false;
- }
- /**
- * Removes documents from search engine database
- *
- * @param string $course_id Course code
- * @param int $document_id Document id to delete
- */
- public static function delete_document_from_search_engine ($course_id, $document_id) {
- // remove from search engine if enabled
- if (api_get_setting('search_enabled') == 'true') {
- $tbl_se_ref = Database::get_main_table(TABLE_MAIN_SEARCH_ENGINE_REF);
- $sql = 'SELECT * FROM %s WHERE course_code=\'%s\' AND tool_id=\'%s\' AND ref_id_high_level=%s LIMIT 1';
- $sql = sprintf($sql, $tbl_se_ref, $course_id, TOOL_DOCUMENT, $document_id);
- $res = Database::query($sql);
- if (Database::num_rows($res) > 0) {
- $row2 = Database::fetch_array($res);
- require_once api_get_path(LIBRARY_PATH) .'search/DokeosIndexer.class.php';
- $di = new DokeosIndexer();
- $di->remove_document((int)$row2['search_did']);
- }
- $sql = 'DELETE FROM %s WHERE course_code=\'%s\' AND tool_id=\'%s\' AND ref_id_high_level=%s LIMIT 1';
- $sql = sprintf($sql, $tbl_se_ref, $course_id, TOOL_DOCUMENT, $document_id);
- Database::query($sql);
- // remove terms from db
- require_once api_get_path(LIBRARY_PATH) .'specific_fields_manager.lib.php';
- delete_all_values_for_item($course_id, TOOL_DOCUMENT, $document_id);
- }
- }
- /**
- * Gets the id of a document with a given path
- *
- * @param array $_course
- * @param string $path
- * @return int id of document / false if no doc found
- */
- public static function get_document_id($course_info, $path) {
- $TABLE_DOCUMENT = Database :: get_course_table(TABLE_DOCUMENT);
- $course_id = $course_info['real_id'];
- $path = Database::escape_string($path);
- $sql = "SELECT id FROM $TABLE_DOCUMENT WHERE c_id = $course_id AND path LIKE BINARY '$path'";
- $result = Database::query($sql);
- if ($result && Database::num_rows($result) == 1) {
- $row = Database::fetch_array($result);
- return intval($row[0]);
- }
- return false;
- }
- /**
- * Gets the document data with a given id
- *
- * @param array $_course
- * @param string $path
- * @todo load parent_id
- * @return int id of document / false if no doc found
- */
- public static function get_document_data_by_id($id, $course_code, $load_parents = false) {
- $course_info = api_get_course_info($course_code);
- $course_id = $course_info['real_id'];
-
- if (empty($course_info)) {
- return false;
- }
- $www = api_get_path(WEB_COURSE_PATH).$course_info['path'].'/document';
-
- $TABLE_DOCUMENT = Database :: get_course_table(TABLE_DOCUMENT);
- $id = intval($id);
- $sql = "SELECT * FROM $TABLE_DOCUMENT WHERE c_id = $course_id AND id = $id ";
- $result = Database::query($sql);
- if ($result && Database::num_rows($result) == 1) {
- $row = Database::fetch_array($result,'ASSOC');
-
- //@todo need to clarify the name of the URLs not nice right now
- $url_path = urlencode($row['path']);
- $path = str_replace('%2F', '/',$url_path);
-
- $row['url'] = api_get_path(WEB_CODE_PATH).'document/showinframes.php?cidReq='.$course_code.'&id='.$id;
- $row['document_url'] = api_get_path(WEB_CODE_PATH).'document/document.php?cidReq='.$course_code.'&id='.$id;
- $row['direct_url'] = $www.$path;
-
- if (dirname($row['path']) == '.') {
- $row['parent_id'] = '0';
- } else {
- $row['parent_id'] = self::get_document_id($course_info, dirname($row['path']));
- }
- $parents = array();
-
- //Use to generate parents (needed for the breadcrumb)
- //@todo sorry but this for is here because there's not a parent_id in the document table so we parsed the path!!
-
- $visibility = true;
-
- if ($load_parents) {
- $dir_array = explode('/', $row['path']);
- $dir_array = array_filter($dir_array);
- $array_len = count($dir_array) +1 ;
- $real_dir = '';
-
- for ($i = 1; $i < $array_len; $i++) {
- $sub_visibility = true;
- $real_dir .= '/'.$dir_array[$i];
- $parent_id = self::get_document_id($course_info, $real_dir);
- if (!empty($parent_id)) {
- $sub_document_data = self::get_document_data_by_id($parent_id, $course_code, false);
- //@todo add visibility here
-
- /*$sub_visibility = self::is_visible_by_id($parent_id, $course_info, api_get_session_id(), api_get_user_id());
- if ($visibility && $sub_visibility == false) {
- $visibility = false;
- }
- */
- $parents[] = $sub_document_data;
- }
- }
- }
- //$row['visibility_for_user'] = $visibility;
- $row['parents'] = $parents;
- return $row;
- }
- return false;
- }
- /**
- * Allow to set a specific document as a new template for FCKEditor for a particular user in a particular course
- *
- * @param string $title
- * @param string $description
- * @param int $document_id_for_template the document id
- * @param string $couse_code
- * @param int $user_id
- */
- public static function set_document_as_template($title, $description, $document_id_for_template, $couse_code, $user_id, $image) {
- // Database table definition
- $table_template = Database::get_main_table(TABLE_MAIN_TEMPLATES);
- // creating the sql statement
- $sql = "INSERT INTO ".$table_template."
- (title, description, course_code, user_id, ref_doc, image)
- VALUES (
- '".Database::escape_string($title)."',
- '".Database::escape_string($description)."',
- '".Database::escape_string($couse_code)."',
- '".Database::escape_string($user_id)."',
- '".Database::escape_string($document_id_for_template)."',
- '".Database::escape_string($image)."')";
- Database::query($sql);
- return true;
- }
- /**
- * Unset a document as template
- *
- * @param int $document_id
- * @param string $couse_code
- * @param int $user_id
- */
- public static function unset_document_as_template($document_id, $course_code, $user_id) {
- $table_template = Database::get_main_table(TABLE_MAIN_TEMPLATES);
- $course_code = Database::escape_string($course_code);
- $user_id = Database::escape_string($user_id);
- $document_id = Database::escape_string($document_id);
- $sql = 'SELECT id FROM '.$table_template.' WHERE course_code="'.$course_code.'" AND user_id="'.$user_id.'" AND ref_doc="'.$document_id.'"';
- $result = Database::query($sql);
- $template_id = Database::result($result,0,0);
- include_once(api_get_path(LIBRARY_PATH) . 'fileManage.lib.php');
- my_delete(api_get_path(SYS_CODE_PATH).'upload/template_thumbnails/'.$template_id.'.jpg');
- $sql = 'DELETE FROM '.$table_template.' WHERE course_code="'.$course_code.'" AND user_id="'.$user_id.'" AND ref_doc="'.$document_id.'"';
- Database::query($sql);
- }
- /**
- * Return true if the documentpath have visibility=1 as item_property (you should use the is_visible_by_id)
- *
- * @param string $document_path the relative complete path of the document
- * @param array $course the _course array info of the document's course
- */
- public static function is_visible($doc_path, $course, $session_id = 0, $file_type = 'file') {
- $docTable = Database::get_course_table(TABLE_DOCUMENT);
- $propTable = Database::get_course_table(TABLE_ITEM_PROPERTY);
-
- $course_id = $course['real_id'];
- //note the extra / at the end of doc_path to match every path in the document table that is part of the document path
- $doc_path = Database::escape_string($doc_path);
- $session_id = intval($session_id);
- $condition = "AND id_session IN ('$session_id', '0') ";
- // The " d.filetype='file' " let the user see a file even if the folder is hidden see #2198
- //When using hotpotatoes files, new files are generated in the hotpotatoe folder, if user_id=1 does the exam a new html file will be generated: hotpotatoe.html.(user_id).t.html
- //so we remove that string in order to find correctly the origin file
- if (strpos($doc_path, 'HotPotatoes_files')) {
- $doc_path = substr($doc_path, 0, strlen($doc_path) - 8);
- }
- if (!in_array($file_type, array('file','folder'))) {
- $file_type = 'file';
- }
- $sql = "SELECT visibility FROM $docTable d, $propTable ip
- WHERE d.c_id = $course_id AND
- ip.c_id = $course_id AND
- d.id = ip.ref AND
- ip.tool = '".TOOL_DOCUMENT."' $condition AND
- filetype = '$file_type' AND locate(concat(path,'/'),'".$doc_path."/')=1";
- $result = Database::query($sql);
- $is_visible = false;
- if (Database::num_rows($result) > 0) {
- $row = Database::fetch_array($result,'ASSOC');
- if ($row['visibility'] == 1) {
- $is_visible = $_SESSION['is_allowed_in_course'] || api_is_platform_admin();
- }
- }
- //improved protection of documents viewable directly through the url: incorporates the same protections of the course at the url of documents: access allowed for the whole world Open, access allowed for users registered on the platform Private access, document accessible only to course members (see the Users list), Completely closed; the document is only accessible to the course admin and teaching assistants.
- //return $_SESSION ['is_allowed_in_course'] || api_is_platform_admin();
- return $is_visible;
- }
- /**
- * Return true if user can see a file
- *
- * @param int document id
- * @param array course info
- * @param array $course the _course array info of the document's course
- * @return bool
- */
- public static function is_visible_by_id($doc_id, $course_info, $session_id, $user_id, $admins_can_see_everything = true) {
- $is_visible = false;
- $user_in_course = false;
-
- //1. Checking the course array
- if (empty($course_info)) {
- $course_info = api_get_course_info();
- if (empty($course_info)) {
- return false;
- }
- }
-
- $doc_id = intval($doc_id);
- $session_id = intval($session_id);
-
-
- //2. Course and Session visibility are handle in local.inc.php/global.inc.php
-
- //3. Checking if user exist in course/session
-
- if ($session_id == 0 ) {
- if (CourseManager::is_user_subscribed_in_course($user_id, $course_info['code']) || api_is_platform_admin()) {
- $user_in_course = true;
- }
- //Check if course is open then we can consider that the student is regitered to the course
- if (isset($course_info) && in_array($course_info['visibility'], array(2, 3))) {
- $user_in_course = true;
- }
- } else {
- $user_status = SessionManager::get_user_status_in_session($user_id, $course_info['code'], $session_id);
- if (in_array($user_status, array('0', '2', '6'))) {
- //is true if is an student, course session teacher or coach
- $user_in_course = true;
- }
- }
-
-
- //4. Checking document visibility (i'm repeating the code in order to be more clear when reading ) - jm
-
- if ($user_in_course) {
-
- //4.1 Checking document visibility for a Course
-
- if ($session_id == 0) {
- $item_info = api_get_item_property_info($course_info['real_id'], 'document', $doc_id, 0);
-
- if (isset($item_info['visibility'])) {
- // True for admins if document exists
- if ($admins_can_see_everything && api_is_platform_admin()) {
- return true;
- }
- if ($item_info['visibility'] == 1) {
- return true;
- }
- }
- } else {
- //4.2 Checking document visibility for a Course in a Session
- $item_info = api_get_item_property_info($course_info['real_id'], 'document', $doc_id, 0);
- $item_info_in_session = api_get_item_property_info($course_info['real_id'], 'document', $doc_id, $session_id);
-
- // True for admins if document exists
- if (isset($item_info['visibility'])) {
- if ($admins_can_see_everything && api_is_platform_admin())
- return true;
- }
-
- if (isset($item_info_in_session['visibility'])) {
- //if ($doc_id == 85) { var_dump($item_info_in_session);}
- if ($item_info_in_session['visibility'] == 1) {
- return true;
- }
- } else {
- if ($item_info['visibility'] == 1) {
- return true;
- }
- }
- }
- } elseif ($admins_can_see_everything && api_is_platform_admin()) {
- return true;
- }
- return false;
- }
- /**
- * Allow attach a certificate to a course
- * @param string The course id
- * @param int The document id
- * @return void()
- */
- function attach_gradebook_certificate ($course_id, $document_id) {
- $tbl_category = Database :: get_main_table(TABLE_MAIN_GRADEBOOK_CATEGORY);
- $session_id = api_get_session_id();
- if ($session_id==0 || is_null($session_id)) {
- $sql_session='AND (session_id='.Database::escape_string($session_id).' OR isnull(session_id)) ';
- } elseif ($session_id>0) {
- $sql_session='AND session_id='.Database::escape_string($session_id);
- } else {
- $sql_session='';
- }
- $sql='UPDATE '.$tbl_category.' SET document_id="'.Database::escape_string($document_id).'"
- WHERE course_code="'.Database::escape_string($course_id).'" '.$sql_session;
- $rs=Database::query($sql);
- }
- /**
- * get the document id of default certificate
- * @param string The course id
- * @return int The default certificate id
- */
- function get_default_certificate_id($course_id) {
- $tbl_category=Database :: get_main_table(TABLE_MAIN_GRADEBOOK_CATEGORY);
- $session_id=api_get_session_id();
- if ($session_id==0 || is_null($session_id)) {
- $sql_session='AND (session_id='.Database::escape_string($session_id).' OR isnull(session_id)) ';
- } elseif ($session_id>0) {
- $sql_session='AND session_id='.Database::escape_string($session_id);
- } else {
- $sql_session='';
- }
- $sql='SELECT document_id FROM '.$tbl_category.' WHERE course_code="'.Database::escape_string($course_id).'" '.$sql_session;
- $rs=Database::query($sql);
- $row=Database::fetch_array($rs);
- return $row['document_id'];
- }
- /**
- * allow replace user info in file html
- * @param string The course code
- * @return string The html content of the certificate
- */
- function replace_user_info_into_html($user_id, $course_code, $is_preview = false) {
- $user_id = intval($user_id);
- $course_info = api_get_course_info($course_code);
- $tbl_document = Database::get_course_table(TABLE_DOCUMENT);
- $course_id = $course_info['real_id'];
- $document_id = self::get_default_certificate_id($course_code);
- if ($document_id) {
-
- $sql = "SELECT path FROM $tbl_document WHERE c_id = $course_id AND id = $document_id";
-
- $rs = Database::query($sql);
- $new_content = '';
- $all_user_info = array();
- if (Database::num_rows($rs)) {
- $row=Database::fetch_array($rs);
- $filepath = api_get_path(SYS_COURSE_PATH).$course_info['path'].'/document'.$row['path'];
- if (is_file($filepath)) {
- $my_content_html = file_get_contents($filepath);
- }
- $all_user_info = self::get_all_info_to_certificate($user_id, $course_code, $is_preview);
- $info_to_be_replaced_in_content_html=$all_user_info[0];
- $info_to_replace_in_content_html=$all_user_info[1];
- $new_content=str_replace($info_to_be_replaced_in_content_html,$info_to_replace_in_content_html, $my_content_html);
- }
- return array('content' => $new_content, 'variables' => $all_user_info);
- }
- return array();
- }
- /**
- * return all content to replace and all content to be replace
- */
- function get_all_info_to_certificate($user_id, $course_id, $is_preview = false) {
- $info_list = array();
- $user_id = intval($user_id);
-
- $course_info = api_get_course_info($course_id);
- //info portal
- $organization_name = api_get_setting('Institution');
- $portal_name = api_get_setting('siteName');
- //Extra user data information
- $extra_user_info_data = UserManager::get_extra_user_data($user_id, false, false, false, true);
- //Student information
- $user_info = api_get_user_info($user_id);
- $first_name = $user_info['firstname'];
- $last_name = $user_info['lastname'];
- $official_code = $user_info['official_code'];
- //Teacher information
- $info_teacher_id = UserManager::get_user_id_of_course_admin_or_session_admin($course_id);
- $teacher_info = api_get_user_info($info_teacher_id);
- $teacher_first_name = $teacher_info['firstname'];
- $teacher_last_name = $teacher_info['lastname'];
- // info gradebook certificate
- $info_grade_certificate = UserManager::get_info_gradebook_certificate($course_id, $user_id);
-
- $date_certificate = $info_grade_certificate['created_at'];
- $date_long_certificate = '';
- if (!empty($date_certificate)) {
- $date_long_certificate = api_convert_and_format_date($date_certificate);
- }
- if ($is_preview) {
- $date_long_certificate = api_convert_and_format_date(api_get_utc_datetime());
- }
- $url = api_get_path(WEB_PATH).'certificates/?id='.$info_grade_certificate['id'];
- //replace content
- $info_to_replace_in_content_html = array($first_name,
- $last_name,
- $organization_name,
- $portal_name,
- $teacher_first_name,
- $teacher_last_name,
- $official_code,
- $date_long_certificate,
- $course_id,
- $course_info['name'],
- $info_grade_certificate['grade'],
- $url,
- '<a href="'.$url.'" target="_blank">'.get_lang('CertificateOnlineLink').'</a>',
- '((certificate_barcode))',
- );
- $info_to_be_replaced_in_content_html = array('((user_firstname))',
- '((user_lastname))',
- '((gradebook_institution))',
- '((gradebook_sitename))',
- '((teacher_firstname))',
- '((teacher_lastname))',
- '((official_code))',
- '((date_certificate))',
- '((course_code))',
- '((course_title))',
- '((gradebook_grade))',
- '((certificate_link))',
- '((certificate_link_html))',
- '((certificate_barcode))',
- );
-
- if (!empty($extra_user_info_data)) {
- foreach ($extra_user_info_data as $key_extra=>$value_extra) {
- $info_to_be_replaced_in_content_html[]='(('.strtolower($key_extra).'))';
- $info_to_replace_in_content_html[]=$value_extra;
- }
- }
- $info_list[]=$info_to_be_replaced_in_content_html;
- $info_list[]=$info_to_replace_in_content_html;
- return $info_list;
- }
- /**
- * Remove default certificate
- * @param string The course id
- * @param int The document id of the default certificate
- * @return void()
- */
- function remove_attach_certificate ($course_id,$default_certificate_id) {
- $default_certificate=self::get_default_certificate_id($course_id);
- if ((int)$default_certificate==(int)$default_certificate_id) {
- $tbl_category=Database :: get_main_table(TABLE_MAIN_GRADEBOOK_CATEGORY);
- $session_id=api_get_session_id();
- if ($session_id==0 || is_null($session_id)) {
- $sql_session='AND (session_id='.Database::escape_string($session_id).' OR isnull(session_id)) ';
- } elseif ($session_id>0) {
- $sql_session='AND session_id='.Database::escape_string($session_id);
- } else {
- $sql_session='';
- }
- $sql='UPDATE '.$tbl_category.' SET document_id=null
- WHERE course_code="'.Database::escape_string($course_id).'" AND document_id="'.$default_certificate_id.'" '.$sql_session;
- $rs=Database::query($sql);
- }
- }
- /**
- * Create directory certificate
- * @param string The course id
- * @return void()
- */
- function create_directory_certificate_in_course ($course_id) {
- $course_info = api_get_course_info($course_id);
- if (!empty($course_info)) {
- $to_group_id=0;
- $to_user_id=null;
- $course_dir = $course_info['path']."/document/";
- $sys_course_path = api_get_path(SYS_COURSE_PATH);
- $base_work_dir=$sys_course_path.$course_dir;
- $base_work_dir_test=$base_work_dir.'certificates';
- $dir_name='/certificates';
- $post_dir_name=get_lang('CertificatesFiles');
- $visibility_command='invisible';
- if (!is_dir($base_work_dir_test)) {
- $created_dir = create_unexisting_directory($course_info, api_get_user_id(), api_get_session_id(), $to_group_id,$to_user_id,$base_work_dir,$dir_name,$post_dir_name);
- $update_id = DocumentManager::get_document_id_of_directory_certificate();
- api_item_property_update($course_info, TOOL_DOCUMENT, $update_id, $visibility_command, api_get_user_id());
- }
- }
- }
- /**
- * Get the document id of the directory certificate
- * @param string The course id
- * @return int The document id of the directory certificate
- */
- function get_document_id_of_directory_certificate () {
- $tbl_document=Database::get_course_table(TABLE_DOCUMENT);
- $course_id = api_get_course_int_id();
- $sql = "SELECT id FROM $tbl_document WHERE c_id = $course_id AND path='/certificates' ";
- $rs=Database::query($sql);
- $row=Database::fetch_array($rs);
- return $row['id'];
- }
- /**
- * Check if a directory given is for certificate
- * @param string path of directory
- * @return bool true if is a certificate or false otherwise
- */
- function is_certificate_mode($dir) {
- //I'm in the certification module?
- $is_certificate_mode = false;
- $is_certificate_array = explode('/',$dir);
- array_shift($is_certificate_array);
- if ($is_certificate_array[0]=='certificates') {
- $is_certificate_mode = true;
- }
- return $is_certificate_mode;
- }
- /**
- * Gets the list of included resources as a list of absolute or relative paths from a html file or string html
- * This allows for a better SCORM export or replace urls inside content html from copy course
- * The list will generally include pictures, flash objects, java applets, or any other
- * stuff included in the source of the current item. The current item is expected
- * to be an HTML file or string html. If it is not, then the function will return and empty list.
- * @param string source html (content or path)
- * @param bool is file or string html
- * @param string type (one of the Dokeos tools) - optional (otherwise takes the current item's type)
- * @param int level of recursivity we're in
- * @return array List of file paths. An additional field containing 'local' or 'remote' helps determine if the file should be copied into the zip or just linked
- */
- function get_resources_from_source_html($source_html, $is_file = false, $type = null, $recursivity = 1) {
- $max = 5;
- $attributes = array();
- $wanted_attributes = array('src', 'url', '@import', 'href', 'value', 'flashvars');
- $abs_path = '';
- if ($recursivity > $max) {
- return array();
- }
- if (!isset($type)) {
- $type = TOOL_DOCUMENT;
- }
- if (!$is_file) {
- $attributes = DocumentManager::parse_HTML_attributes($source_html, $wanted_attributes);
- } else {
- if (is_file($source_html)) {
- $abs_path = $source_html;
- //for now, read the whole file in one go (that's gonna be a problem when the file is too big)
- $info = pathinfo($abs_path);
- $ext = $info['extension'];
- switch (strtolower($ext)) {
- case 'html' :
- case 'htm' :
- case 'shtml':
- case 'css' :
- $file_content = file_get_contents($abs_path);
- //get an array of attributes from the HTML source
- $attributes = DocumentManager::parse_HTML_attributes($file_content, $wanted_attributes);
- break;
- default :
- break;
- }
- } else {
- return false;
- }
- }
- switch ($type) {
- case TOOL_DOCUMENT :
- case TOOL_QUIZ:
- case 'sco':
- foreach ($wanted_attributes as $attr) {
- if (isset($attributes[$attr])) {
- //find which kind of path these are (local or remote)
- $sources = $attributes[$attr];
- foreach ($sources as $source) {
- //skip what is obviously not a resource
- if (strpos($source, '+this.')) continue; //javascript code - will still work unaltered
- if (strpos($source, '.') === false) continue; //no dot, should not be an external file anyway
- if (strpos($source, 'mailto:')) continue; //mailto link
- if (strpos($source, ';') && !strpos($source, '&')) continue; //avoid code - that should help
- if ($attr == 'value') {
- if (strpos($source , 'mp3file')) {
- $files_list[] = array(substr($source, 0, strpos($source, '.swf') + 4), 'local', 'abs');
- $mp3file = substr($source , strpos($source, 'mp3file=') + 8);
- if (substr($mp3file, 0, 1) == '/') {
- $files_list[] = array($mp3file, 'local', 'abs');
- } else {
- $files_list[] = array($mp3file, 'local', 'rel');
- }
- } elseif (strpos($source, 'flv=') === 0) {
- $source = substr($source, 4);
- if (strpos($source, '&') > 0) {
- $source = substr($source, 0, strpos($source, '&'));
- }
- if (strpos($source,'://') > 0) {
- if (strpos($source, api_get_path(WEB_PATH)) !== false) {
- //we found the current portal url
- $files_list[] = array($source, 'local', 'url');
- } else {
- //we didn't find any trace of current portal
- $files_list[] = array($source, 'remote', 'url');
- }
- } else {
- $files_list[] = array($source, 'local', 'abs');
- }
- continue; //skipping anything else to avoid two entries (while the others can have sub-files in their url, flv's can't)
- }
- }
- if (strpos($source, '://') > 0) {
- //cut at '?' in a URL with params
- if (strpos($source, '?') > 0) {
- $second_part = substr($source,strpos($source, '?'));
- if(strpos($second_part, '://') > 0) {
- //if the second part of the url contains a url too, treat the second one before cutting
- $pos1 = strpos($second_part, '=');
- $pos2 = strpos($second_part, '&');
- $second_part = substr($second_part, $pos1 + 1, $pos2 - ($pos1 + 1));
- if (strpos($second_part, api_get_path(WEB_PATH)) !== false) {
- //we found the current portal url
- $files_list[] = array($second_part, 'local', 'url');
- $in_files_list[] = DocumentManager::get_resources_from_source_html($second_part, true, TOOL_DOCUMENT, $recursivity + 1);
- if (count($in_files_list) > 0) {
- $files_list = array_merge($files_list, $in_files_list);
- }
- } else {
- //we didn't find any trace of current portal
- $files_list[] = array($second_part, 'remote', 'url');
- }
- } elseif (strpos($second_part, '=') > 0) {
- if (substr($second_part, 0, 1) === '/') {
- //link starts with a /, making it absolute (relative to DocumentRoot)
- $files_list[] = array($second_part, 'local', 'abs');
- $in_files_list[] = DocumentManager::get_resources_from_source_html($second_part, true, TOOL_DOCUMENT, $recursivity + 1);
- if (count($in_files_list) > 0) {
- $files_list = array_merge($files_list, $in_files_list);
- }
- } elseif(strstr($second_part, '..') === 0) {
- //link is relative but going back in the hierarchy
- $files_list[] = array($second_part, 'local', 'rel');
- //$dir = api_get_path(SYS_CODE_PATH);//dirname($abs_path);
- //$new_abs_path = realpath($dir.'/'.$second_part);
- $dir = '';
- if (!empty($abs_path)) {
- $dir = dirname($abs_path).'/';
- }
- $new_abs_path = realpath($dir.$second_part);
- $in_files_list[] = DocumentManager::get_resources_from_source_html($new_abs_path, true, TOOL_DOCUMENT, $recursivity + 1);
- if (count($in_files_list) > 0) {
- $files_list = array_merge($files_list, $in_files_list);
- }
- } else {
- //no starting '/', making it relative to current document's path
- if (substr($second_part, 0, 2) == './') {
- $second_part = substr($second_part, 2);
- }
- $files_list[] = array($second_part, 'local', 'rel');
- $dir = '';
- if (!empty($abs_path)) {
- $dir = dirname($abs_path).'/';
- }
- $new_abs_path = realpath($dir.$second_part);
- $in_files_list[] = DocumentManager::get_resources_from_source_html($new_abs_path, true, TOOL_DOCUMENT, $recursivity + 1);
- if (count($in_files_list) > 0) {
- $files_list = array_merge($files_list, $in_files_list);
- }
- }
- }
- //leave that second part behind now
- $source = substr($source, 0, strpos($source, '?'));
- if (strpos($source, '://') > 0) {
- if (strpos($source, api_get_path(WEB_PATH)) !== false) {
- //we found the current portal url
- $files_list[] = array($source, 'local', 'url');
- $in_files_list[] = DocumentManager::get_resources_from_source_html($source, true, TOOL_DOCUMENT, $recursivity+1);
- if (count($in_files_list) > 0) {
- $files_list = array_merge($files_list, $in_files_list);
- }
- } else {
- //we didn't find any trace of current portal
- $files_list[] = array($source, 'remote', 'url');
- }
- } else {
- //no protocol found, make link local
- if (substr($source, 0, 1) === '/') {
- //link starts with a /, making it absolute (relative to DocumentRoot)
- $files_list[] = array($source, 'local', 'abs');
- $in_files_list[] = DocumentManager::get_resources_from_source_html($source, true, TOOL_DOCUMENT, $recursivity + 1);
- if (count($in_files_list) > 0) {
- $files_list = array_merge($files_list, $in_files_list);
- }
- } elseif (strstr($source, '..') === 0) { //link is relative but going back in the hierarchy
- $files_list[] = array($source, 'local', 'rel');
- $dir = '';
- if (!empty($abs_path)) {
- $dir = dirname($abs_path).'/';
- }
- $new_abs_path = realpath($dir.$source);
- $in_files_list[] = DocumentManager::get_resources_from_source_html($new_abs_path, true, TOOL_DOCUMENT, $recursivity + 1);
- if (count($in_files_list) > 0) {
- $files_list = array_merge($files_list, $in_files_list);
- }
- } else {
- //no starting '/', making it relative to current document's path
- if (substr($source, 0, 2) == './') {
- $source = substr($source, 2);
- }
- $files_list[] = array($source, 'local', 'rel');
- $dir = '';
- if (!empty($abs_path)) {
- $dir = dirname($abs_path).'/';
- }
- $new_abs_path = realpath($dir.$source);
- $in_files_list[] = DocumentManager::get_resources_from_source_html($new_abs_path, true, TOOL_DOCUMENT, $recursivity + 1);
- if (count($in_files_list) > 0) {
- $files_list = array_merge($files_list, $in_files_list);
- }
- }
- }
- }
- //found some protocol there
- if (strpos($source, api_get_path(WEB_PATH)) !== false) {
- //we found the current portal url
- $files_list[] = array($source, 'local', 'url');
- $in_files_list[] = DocumentManager::get_resources_from_source_html($source, true, TOOL_DOCUMENT, $recursivity + 1);
- if (count($in_files_list) > 0) {
- $files_list = array_merge($files_list, $in_files_list);
- }
- } else {
- //we didn't find any trace of current portal
- $files_list[] = array($source, 'remote', 'url');
- }
- } else {
- //no protocol found, make link local
- if (substr($source, 0, 1) === '/') {
- //link starts with a /, making it absolute (relative to DocumentRoot)
- $files_list[] = array($source, 'local', 'abs');
- $in_files_list[] = DocumentManager::get_resources_from_source_html($source, true, TOOL_DOCUMENT, $recursivity + 1);
- if (count($in_files_list) > 0) {
- $files_list = array_merge($files_list, $in_files_list);
- }
- } elseif (strpos($source, '..') === 0) {
- //link is relative but going back in the hierarchy
- $files_list[] = array($source, 'local', 'rel');
- $dir = '';
- if (!empty($abs_path)) {
- $dir = dirname($abs_path).'/';
- }
- $new_abs_path = realpath($dir.$source);
- $in_files_list[] = DocumentManager::get_resources_from_source_html($new_abs_path, true, TOOL_DOCUMENT, $recursivity + 1);
- if (count($in_files_list) > 0) {
- $files_list = array_merge($files_list, $in_files_list);
- }
- } else {
- //no starting '/', making it relative to current document's path
- if (substr($source, 0, 2) == './') {
- $source = substr($source, 2);
- }
- $files_list[] = array($source, 'local', 'rel');
- $dir = '';
- if (!empty($abs_path)) {
- $dir = dirname($abs_path).'/';
- }
- $new_abs_path = realpath($dir.$source);
- $in_files_list[] = DocumentManager::get_resources_from_source_html($new_abs_path, true, TOOL_DOCUMENT, $recursivity + 1);
- if (count($in_files_list) > 0) {
- $files_list = array_merge($files_list, $in_files_list);
- }
- }
- }
- }
- }
- }
- break;
- default: //ignore
- break;
- }
- $checked_files_list = array();
- $checked_array_list = array();
- if (count($files_list ) > 0) {
- foreach ($files_list as $idx => $file) {
- if (!empty($file[0])) {
- if (!in_array($file[0], $checked_files_list)) {
- $checked_files_list[] = $files_list[$idx][0];
- $checked_array_list[] = $files_list[$idx];
- }
- }
- }
- }
- return $checked_array_list;
- }
- /**
- * Parses the HTML attributes given as string.
- *
- * @param string HTML attribute string
- * @param array List of attributes that we want to get back
- * @return array An associative array of attributes
- * @author Based on a function from the HTML_Common2 PEAR module
- */
- function parse_HTML_attributes($attrString, $wanted = array()) {
- $attributes = array();
- $regs = array();
- $reduced = false;
- if (count($wanted) > 0) {
- $reduced = true;
- }
- try {
- //Find all occurences of something that looks like a URL
- // The structure of this regexp is:
- // (find protocol) then
- // (optionally find some kind of space 1 or more times) then
- // find (either an equal sign or a bracket) followed by an optional space
- // followed by some text without quotes (between quotes itself or not)
- // then possible closing brackets if we were in the opening bracket case
- // OR something like @import()
- $res = preg_match_all(
- '/(((([A-Za-z_:])([A-Za-z0-9_:\.-]*))' .
- // '/(((([A-Za-z_:])([A-Za-z0-9_:\.-]|[^\x00-\x7F])*)' . -> seems to be taking too much
- // '/(((([A-Za-z_:])([^\x00-\x7F])*)' . -> takes only last letter of parameter name
- '([ \n\t\r]+)?(' .
- // '(=([ \n\t\r]+)?("[^"]+"|\'[^\']+\'|[^ \n\t\r]+))' . -> doesn't restrict close enough to the url itself
- '(=([ \n\t\r]+)?("[^"\)]+"|\'[^\'\)]+\'|[^ \n\t\r\)]+))' .
- '|' .
- // '(\(([ \n\t\r]+)?("[^"]+"|\'[^\']+\'|[^ \n\t\r]+)\))' . -> doesn't restrict close enough to the url itself
- '(\(([ \n\t\r]+)?("[^"\)]+"|\'[^\'\)]+\'|[^ \n\t\r\)]+)\))' .
- '))' .
- '|' .
- // '(@import([ \n\t\r]+)?("[^"]+"|\'[^\']+\'|[^ \n\t\r]+)))?/', -> takes a lot (like 100's of thousands of empty possibilities)
- '(@import([ \n\t\r]+)?("[^"]+"|\'[^\']+\'|[^ \n\t\r]+)))/',
- $attrString,
- $regs
- );
- } catch (Exception $e) {
- error_log('Caught exception: '. $e->getMessage(), 0) ;
- }
- if ($res) {
- for ($i = 0; $i < count($regs[1]); $i++) {
- $name = trim($regs[3][$i]);
- $check = trim($regs[0][$i]);
- $value = trim($regs[10][$i]);
- if (empty($value) and !empty($regs[13][$i])) {
- $value = $regs[13][$i];
- }
- if (empty($name) && !empty($regs[16][$i])) {
- $name = '@import';
- $value = trim($regs[16][$i]);
- }
- if (!empty($name)) {
- if (!$reduced OR in_array(strtolower($name), $wanted)) {
- if ($name == $check) {
- $attributes[strtolower($name)][] = strtolower($name);
- } else {
- if (!empty($value) && ($value[0] == '\'' || $value[0] == '"')) {
- $value = substr($value, 1, -1);
- }
- if ($value == 'API.LMSGetValue(name') {
- $value = 'API.LMSGetValue(name)';
- }
- $attributes[strtolower($name)][] = $value;
- }
- }
- }
- }
- } else {
- error_log('preg_match did not find anything', 0);
- }
- return $attributes;
- }
- /**
- * Replace urls inside content html from a copy course
- * @param string content html
- * @param string origin course code
- * @param string destination course directory
- * @return string new content html with replaced urls or return false if content is not a string
- */
- function replace_urls_inside_content_html_from_copy_course($content_html, $origin_course_code, $destination_course_directory) {
- if (!is_string($content_html)) {
- return false;
- }
- $orig_source_html = DocumentManager::get_resources_from_source_html($content_html);
- $orig_course_info = api_get_course_info($origin_course_code);
- $orig_course_path = api_get_path(SYS_PATH).'courses/'.$orig_course_info['path'].'/';
- $destination_course_code = CourseManager::get_course_id_from_path ($destination_course_directory);
- $dest_course_path = api_get_path(SYS_COURSE_PATH).$destination_course_directory.'/';
-
- foreach ($orig_source_html as $source) {
- // get information about source url
- $real_orig_url = $source[0]; // url
- $scope_url = $source[1]; // scope (local, remote)
- $type_url = $source[2]; // tyle (rel, abs, url)
- // Get path and query from origin url
- $orig_parse_url = parse_url($real_orig_url);
- $real_orig_path = $orig_parse_url['path'];
- $real_orig_query = $orig_parse_url['query'];
- // Replace origin course code by destination course code from origin url query
- $dest_url_query = '';
- if (!empty($real_orig_query)) {
- $dest_url_query = '?'.$real_orig_query;
- if (strpos($dest_url_query,$origin_course_code) !== false) {
- $dest_url_query = str_replace($origin_course_code, $destination_course_code, $dest_url_query);
- }
- }
- if ($scope_url == 'local') {
- if ( $type_url == 'abs' || $type_url == 'rel') {
- $document_file = strstr($real_orig_path, 'document');
- if (strpos($real_orig_path,$document_file) !== false) {
- $origin_filepath = $orig_course_path.$document_file;
- $destination_filepath = $dest_course_path.$document_file;
- // copy origin file inside destination course
- if (file_exists($origin_filepath)) {
- $filepath_dir = dirname($destination_filepath);
- if (!is_dir($filepath_dir)) {
- $perm = api_get_permissions_for_new_directories();
- @mkdir($filepath_dir, $perm, true);
- }
- if (!file_exists($destination_filepath)) {
- @copy($origin_filepath, $destination_filepath);
- }
- }
- // Replace origin course path by destination course path
- if (strpos($content_html,$real_orig_url) !== false) {
- //$origin_course_code
- $url_course_path = str_replace($orig_course_info['path'].'/'.$document_file, '', $real_orig_path);
- $destination_url = $url_course_path.$destination_course_directory.'/'.$document_file.$dest_url_query;
- //If the course code doesn't exist in the path? what we do? Nothing! see BT#1985
- if (strpos($real_orig_path, $origin_course_code) === false) {
- $url_course_path = $real_orig_path;
- $destination_url = $real_orig_path;
- }
- $content_html = str_replace($real_orig_url, $destination_url, $content_html);
- }
- }
- // replace origin course code by destination course code from origin url
- if (strpos($real_orig_url, '?') === 0) {
- $dest_url = str_replace($origin_course_code, $destination_course_code, $real_orig_url);
- $content_html = str_replace($real_orig_url, $dest_url, $content_html);
- }
- } else {
- if ($type_url == 'url') {
- }
- }
- }
- }
- return $content_html;
- }
- /**
- * Replace urls inside content html when moving a file
- * @todo this code is only called in document.php but is commented
- * @param string content html
- * @param string origin
- * @param string destination
- * @return string new content html with replaced urls or return false if content is not a string
- */
- function replace_urls_inside_content_html_when_moving_file($file_name, $original_path, $destiny_path) {
- if (substr($original_path, strlen($original_path) -1 , strlen($original_path)) == '/') {
- $original = $original_path.$file_name;
- } else {
- $original = $original_path.'/'.$file_name;
- }
- if (substr($destiny_path, strlen($destiny_path) -1 , strlen($destiny_path)) == '/') {
- $destination = $destiny_path.$file_name;
- } else {
- $destination = $destiny_path.'/'.$file_name;
- }
- //var_dump("From $original ", "to $destination");
- $original_count = count(explode('/', $original));
- $destination_count = count(explode('/', $destination));
- if ($original_count == $destination_count) {
- //Nothing to change
- return true;
- }
-
- $mode = '';
- if ($original_count > $destination_count) {
- $mode = 'outside';
- } else {
- $mode = 'inside';
- }
- //echo $original_count.' '.$destination_count; var_dump($mode);
- //We do not select the $original_path becayse the file was already moved
- $content_html = file_get_contents($destiny_path.'/'.$file_name);
- $destination_file = $destiny_path.'/'.$file_name;
- $pre_original = strstr($original_path, 'document');
- $pre_destin = strstr($destiny_path, 'document');
-
- //var_dump ("pre_original $pre_original");
- //var_dump ("pre_destin $pre_destin");
- $pre_original = substr($pre_original, 8, strlen($pre_original));
- $pre_destin = substr($pre_destin, 8, strlen($pre_destin));
-
- //var_dump ("pre_original $pre_original");
- //var_dump ("pre_destin $pre_destin");
- $levels = count(explode('/', $pre_destin)) - 1 ;
- $link_to_add = '';
- for ($i=1; $i <=$levels ; $i++) {
- $link_to_add .= '../';
- }
- if ($pre_original == '/') {
- $pre_original = '';
- }
-
- if ($pre_destin == '/') {
- $pre_destin = '';
- }
- if ($pre_original != '') {
- $pre_original = '..'.$pre_original.'/';
- }
- if ($pre_destin != '') {
- $pre_destin = '..'.$pre_destin.'/';
- }
- //var_dump($pre_original);
-
- $levels = explode('/', $pre_original);
- //var_dump($levels);
-
- $count_pre_destination_levels = 0;
- foreach($levels as $item) {
- if (!empty($item) && $item != '..') {
- $count_pre_destination_levels++;
- }
- }
- $count_pre_destination_levels--;
- //$count_pre_destination_levels = count() - 3;
- if ($count_pre_destination_levels == 0 ) {
- $count_pre_destination_levels = 1;
- }
- //echo '$count_pre_destination_levels '. $count_pre_destination_levels;
- $pre_remove = '';
- for ($i=1; $i <= $count_pre_destination_levels; $i++) {
- $pre_remove .='..\/';
- }
-
- //var_dump(' link to add '.$link_to_add.' -- remove '.$pre_remove);
- $orig_source_html = DocumentManager::get_resources_from_source_html($content_html);
- //var_dump($orig_source_html);
-
- foreach ($orig_source_html as $source) {
- // get information about source url
- $real_orig_url = $source[0]; // url
- $scope_url = $source[1]; // scope (local, remote)
- $type_url = $source[2]; // tyle (rel, abs, url)
- // Get path and query from origin url
- $orig_parse_url = parse_url($real_orig_url);
- $real_orig_path = $orig_parse_url['path'];
- $real_orig_query = $orig_parse_url['query'];
- // Replace origin course code by destination course code from origin url query
- /*
- $dest_url_query = '';
- if (!empty($real_orig_query)) {
- $dest_url_query = '?'.$real_orig_query;
- if (strpos($dest_url_query,$origin_course_code) !== false) {
- $dest_url_query = str_replace($origin_course_code, $destination_course_code, $dest_url_query);
- }
- }*/
- if ($scope_url == 'local') {
- if ( $type_url == 'abs' || $type_url == 'rel') {
- $document_file = strstr($real_orig_path, 'document');
- if (strpos($real_orig_path, $document_file) !== false) {
- echo 'continue1';
- continue;
- } else {
- $real_orig_url_temp = '';
- if ($mode == 'inside') {
- $real_orig_url_temp = str_replace('../', '', $real_orig_url);
- $destination_url = $link_to_add.$real_orig_url_temp;
- } else {
- $real_orig_url_temp = $real_orig_url;
-
- $destination_url = preg_replace("/".$pre_remove."/", '', $real_orig_url, 1);
- }
- if ($real_orig_url == $destination_url) {
- echo 'continue2';
- continue;
- }
- var_dump($real_orig_url_temp.' - '.$destination_url);
- $content_html = str_replace($real_orig_url, $destination_url, $content_html);
- }
- } else {
- echo 'continue3';
- continue;
- }
- }
- }
- $return = file_put_contents($destination, $content_html);
- return $return;
- }
- public function export_to_pdf($document_id, $course_code) {
- require_once api_get_path(LIBRARY_PATH).'pdf.lib.php';
- $course_data = api_get_course_info($course_code);
- $document_data = self::get_document_data_by_id($document_id, $course_code);
- $file_path = api_get_path(SYS_COURSE_PATH).$course_data['path'].'/document'.$document_data['path'];
- $pdf = new PDF();
- $pdf->html_to_pdf($file_path, $document_data['title'], $course_code);
- }
- /**
- * Uploads a document
- *
- * @param array the $_FILES variable
- * @param string $path
- * @param string title
- * @param string comment
- * @param int unzip or not the file
- * @param int if_exists overwrite, rename or warn if exists (default)
- * @param bool index document (search xapian module)
- * @param bool print html messages
- * @return unknown_type
- */
- public function upload_document($files, $path, $title ='', $comment = '', $unzip = 0, $if_exists = '', $index_document = false, $show_output = false) {
- require_once api_get_path(LIBRARY_PATH).'fileUpload.lib.php';
- $max_filled_space = self::get_course_quota();
- $course_info = api_get_course_info();
- $course_dir = $course_info['path'].'/document';
- $sys_course_path = api_get_path(SYS_COURSE_PATH);
- $base_work_dir = $sys_course_path.$course_dir;
-
- if (isset($files['file'])) {
- $upload_ok = process_uploaded_file($files['file'], $show_output);
-
- if ($upload_ok) {
- // File got on the server without problems, now process it
- $new_path = handle_uploaded_document($course_info, $files['file'], $base_work_dir, $path, api_get_user_id(), api_get_group_id(), null, $max_filled_space, $unzip, $if_exists, $show_output);
- if ($new_path) {
- $docid = DocumentManager::get_document_id($course_info, $new_path);
- if (!empty($docid)) {
- $table_document = Database::get_course_table(TABLE_DOCUMENT);
- $params = array();
- if (!empty($title)) {
- $params['title'] = trim($title);
- } else {
- $params['title'] = $files['file']['name'];
- }
- if (!empty($comment)) {
- $params['comment'] = trim($comment);
- }
- Database::update($table_document, $params, array('id = ?' =>$docid));
- }
- // Showing message when sending zip files
- if ($new_path === true && $unzip == 1 && $show_output) {
- Display::display_confirmation_message(get_lang('UplUploadSucceeded').'<br />', false);
- }
- /*// Check for missing images in html files
- $missing_files = check_for_missing_files($base_work_dir.$new_path);
- if ($missing_files && $show_output) {
- // Show a form to upload the missing files
- Display::display_normal_message(build_missing_files_form($missing_files, $path, $files['file']['name']), false);
- }*/
- if ($index_document) {
- $idx_doc = self::index_document($docid,$course_info['code'],null,$_POST['language'],$_REQUEST,$if_exists);
- }
- if (!empty($docid) && is_numeric($docid)) {
- $document_data = self::get_document_data_by_id($docid, $course_info['code']);
- return $document_data;
- }
- }
- }
- }
- return false;
- }
- /**
- * Obtains the text inside the file with the right parser
- */
- function get_text_content($doc_path, $doc_mime) {
- // TODO: review w$ compatibility
- // Use usual exec output lines array to store stdout instead of a temp file
- // because we need to store it at RAM anyway before index on DokeosIndexer object
- $ret_val = null;
- switch ($doc_mime) {
- case 'text/plain':
- $handle = fopen($doc_path, 'r');
- $output = array(fread($handle, filesize($doc_path)));
- fclose($handle);
- break;
- case 'application/pdf':
- exec("pdftotext $doc_path -", $output, $ret_val);
- break;
- case 'application/postscript':
- $temp_file = tempnam(sys_get_temp_dir(), 'chamilo');
- exec("ps2pdf $doc_path $temp_file", $output, $ret_val);
- if ($ret_val !== 0) { // shell fail, probably 127 (command not found)
- return false;
- }
- exec("pdftotext $temp_file -", $output, $ret_val);
- unlink($temp_file);
- break;
- case 'application/msword':
- exec("catdoc $doc_path", $output, $ret_val);
- break;
- case 'text/html':
- exec("html2text $doc_path", $output, $ret_val);
- break;
- case 'text/rtf':
- // Note: correct handling of code pages in unrtf
- // on debian lenny unrtf v0.19.2 can not, but unrtf v0.20.5 can
- exec("unrtf --text $doc_path", $output, $ret_val);
- if ($ret_val == 127) { // command not found
- return false;
- }
- // Avoid index unrtf comments
- if (is_array($output) && count($output) > 1) {
- $parsed_output = array();
- foreach ($output as & $line) {
- if (!preg_match('/^###/', $line, $matches)) {
- if (!empty($line)) {
- $parsed_output[] = $line;
- }
- }
- }
- $output = $parsed_output;
- }
- break;
- case 'application/vnd.ms-powerpoint':
- exec("catppt $doc_path", $output, $ret_val);
- break;
- case 'application/vnd.ms-excel':
- exec("xls2csv -c\" \" $doc_path", $output, $ret_val);
- break;
- }
- $content = '';
- if (!is_null($ret_val)) {
- if ($ret_val !== 0) { // shell fail, probably 127 (command not found)
- return false;
- }
- }
- if (isset($output)) {
- foreach ($output as & $line) {
- $content .= $line."\n";
- }
- return $content;
- }
- else {
- return false;
- }
- }
- /**
- * Calculates the total size of all documents in a course
- *
- * @author Bert vanderkimpen
- * @param int $to_group_id (to calculate group document space)
- * @return int total size
- */
- function documents_total_space($to_group_id = '0') {
- $TABLE_ITEMPROPERTY = Database::get_course_table(TABLE_ITEM_PROPERTY);
- $TABLE_DOCUMENT = Database::get_course_table(TABLE_DOCUMENT);
- $course_id = api_get_course_int_id();
-
- $sql = "SELECT SUM(size) FROM ".$TABLE_ITEMPROPERTY." AS props, ".$TABLE_DOCUMENT." AS docs
- WHERE props.c_id = $course_id AND
- docs.c_id = $course_id AND
- docs.id = props.ref AND
- props.tool = '".TOOL_DOCUMENT."' AND
- props.to_group_id='".$to_group_id."' AND
- props.visibility <> 2";
- $result = Database::query($sql);
- if ($result && Database::num_rows($result) != 0) {
- $row = Database::fetch_row($result);
- return $row[0];
- } else {
- return 0;
- }
- }
- /**
- * Here we count 1 kilobyte = 1000 byte, 12 megabyte = 1000 kilobyte.
- */
- function display_quota($course_quota, $already_consumed_space) {
- $course_quota_m = round($course_quota / 1000000);
- $already_consumed_space_m = round($already_consumed_space / 1000000);
- $message = get_lang('MaximumAllowedQuota') . ' <strong>'.$course_quota_m.' megabyte</strong>.<br />';
- $message .= get_lang('CourseCurrentlyUses') . ' <strong>' . $already_consumed_space_m . ' megabyte</strong>.<br />';
- $percentage = $already_consumed_space / $course_quota * 100;
- $percentage = round($percentage, 1);
- $other_percentage = $percentage < 100 ? 100 - $percentage : 0;
- // Decide where to place percentage in graph
- if ($percentage >= 50) {
- $text_in_filled = ' '.$other_percentage.'%';
- $text_in_unfilled = '';
- } else {
- $text_in_unfilled = ' '.$other_percentage.'%';
- $text_in_filled = '';
- }
- // Decide the background colour of the graph
- if ($percentage < 65) {
- $colour = '#00BB00'; // Safe - green
- } elseif ($percentage < 90) {
- $colour = '#ffd400'; // Filling up - yelloworange
- } else {
- $colour = '#DD0000'; // Full - red
- }
- // This is used for the table width: a table of only 100 pixels looks too small
- $visual_percentage = 4 * $percentage;
- $visual_other_percentage = 4 * $other_percentage;
- $message .= get_lang('PercentageQuotaInUse') . ': <strong>'.$percentage.'%</strong>.<br />' .
- get_lang('PercentageQuotaFree') . ': <strong>'.$other_percentage.'%</strong>.<br />';
- $show_percentage = ' '.$percentage.'%';
- $message .= '<div style="width: 80%; text-align: center; -moz-border-radius: 5px 5px 5px 5px; border: 1px solid #aaa; background-image: url(\''.api_get_path(WEB_CODE_PATH).'css/'.api_get_visual_theme().'/images/bg-header4.png\');" class="document-quota-bar">'.
- '<div style="width:'.$percentage.'%; background-color: #bbb; border-right:3px groove #bbb; -moz-border-radius:5px;"> </div>'.
- '<span style="margin-top: -15px; margin-left:-15px; position: absolute;font-weight:bold;">'.$show_percentage.'</span></div>';
- echo $message;
- }
- /**
- * Display the document quota in a simple way
- *
- * Here we count 1 kilobyte = 1000 byte, 12 megabyte = 1000 kilobyte.
- */
- function display_simple_quota($course_quota, $already_consumed_space) {
- $course_quota_m = round($course_quota / 1000000);
- $already_consumed_space_m = round($already_consumed_space / 1000000, 2);
- $percentage = $already_consumed_space / $course_quota * 100;
- $percentage = round($percentage, 1);
- //$message = "You are currently using %s (%s) of your %s.";
- $message = get_lang('YouAreCurrentlyUsingXOfYourX');
- $message = sprintf($message, $already_consumed_space_m, $percentage.'%',$course_quota_m.' ');
- echo Display::div($message, array('id'=>'document_quota'));
- }
- /**
- * Checks if there is enough place to add a file on a directory
- * on the base of a maximum directory size allowed
- *
- * @author Bert Vanderkimpen
- * @param int file_size size of the file in byte
- * @param array $_course
- * @param int max_dir_space maximum size
- * @return boolean true if there is enough space, false otherwise
- *
- * @see enough_space() uses documents_total_space() function
- */
- function enough_space($file_size, $max_dir_space) {
- if ($max_dir_space) {
- $already_filled_space = self::documents_total_space();
- if (($file_size + $already_filled_space) > $max_dir_space) {
- return false;
- }
- }
- return true;
- }
-
- /**
- *
- * Shows a play icon next to the document title in the document list
- * @param int
- * @return string html content
- */
- function generate_media_preview($i) {
- $i = intval($i);
-
- /*//shows all the player
- $html = '<div id="jquery_jplayer_'.$i.'" class="jp-jplayer"></div>
- <div class="jp-audio">
- <div class="jp-type-single">
- <div id="jp_interface_'.$i.'" class="jp-interface">
- <ul class="jp-controls">
- <li><a href="#" class="jp-play" tabindex="'.$i.'">play</a></li>
- <li><a href="#" class="jp-pause" tabindex="'.$i.'">pause</a></li>
- <li><a href="#" class="jp-stop" tabindex="'.$i.'">stop</a></li>
- <li><a href="#" class="jp-mute" tabindex="'.$i.'">mute</a></li>
- <li><a href="#" class="jp-unmute" tabindex="'.$i.'">unmute</a></li>
- </ul>
- <div class="jp-progress">
- <div class="jp-seek-bar">
- <div class="jp-play-bar"></div>
- </div>
- </div>
- <div class="jp-volume-bar">
- <div class="jp-volume-bar-value"></div>
- </div>
- <div class="jp-current-time"></div>
- <div class="jp-duration"></div>
- </div>
- </div>
- </div>';*/
-
- //Shows only the play button
- $html = ' <div id="jquery_jplayer_'.$i.'" class="jp-jplayer"></div>
- <div class="jp-audio">
- <div class="jp-type-single">
- <div id="jp_interface_'.$i.'" class="jp-interface">
- <ul class="jp-controls">
- <li><a href="#" class="jp-play" tabindex="1">play</a></li>
- <li><a href="#" class="jp-pause" tabindex="1">pause</a></li>
- </ul>
- </div>
- </div>
- </div>';
- return $html;
- }
-
- function get_document_preview($course_info, $lp_id = false, $target = '', $session_id = 0) {
-
- $course_info = api_get_course_info($course_info['code']);
-
- if (empty($course_info) || !is_array($course_info)) {
- return '';
- }
- $user_id = api_get_user_id();
-
- $user_in_course = false;
-
- if (api_is_platform_admin()) {
- $user_in_course = true;
- }
-
- if (!$user_in_course) {
- if (CourseManager::is_course_teacher($user_id, $course_info['code'])) {
- $user_in_course = true;
- }
- }
-
- //condition for the session
- $session_id = intval($session_id);
-
- if (!$user_in_course) {
- if (empty($session_id)) {
- if (CourseManager::is_user_subscribed_in_course($user_id, $course_info['code'])) {
- $user_in_course = true;
- }
- //Check if course is open then we can consider that the student is regitered to the course
- if (isset($course_info) && in_array($course_info['visibility'], array(2, 3))) {
- $user_in_course = true;
- }
- } else {
- $user_status = SessionManager::get_user_status_in_session($user_id, $course_info['code'], $session_id);
- //is true if is an student, course session teacher or coach
- if (in_array($user_status, array('0', '2', '6'))) {
- $user_in_course = true;
- }
- }
- }
-
- $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
- $tbl_doc = Database::get_course_table(TABLE_DOCUMENT);
- $tbl_item_prop = Database::get_course_table(TABLE_ITEM_PROPERTY);
-
- $path = '/';
- $path = Database::escape_string(str_replace('_', '\_', $path));
- $added_slash = ($path == '/') ? '' : '/';
-
- //$condition_session = " AND (id_session = '$session_id' OR (id_session = '0' AND insert_date <= (SELECT creation_date FROM $tbl_course WHERE code = '".$course_info['code']."' )))";
- $condition_session = " AND (id_session = '$session_id' OR id_session = '0' )";
-
- $sql_doc = "SELECT last.visibility, docs.*
- FROM $tbl_item_prop AS last, $tbl_doc AS docs
- WHERE docs.id = last.ref ".
- " AND docs.path LIKE '".$path.$added_slash."%' ".
- " AND docs.path NOT LIKE '%_DELETED_%' ".
- " AND last.tool = '".TOOL_DOCUMENT."' $condition_session ".
- " AND last.visibility = '1' AND ".
- " docs.c_id = {$course_info['real_id']} AND
- last.c_id = {$course_info['real_id']} ".
- "ORDER BY docs.title ASC";
- $res_doc = Database::query($sql_doc);
- $resources = Database::store_result($res_doc, 'ASSOC');
- $return = '';
-
- $resources_sorted = array();
-
- if ($lp_id) {
- $return .= '<div class="lp_resource_element">';
- $return .= Display::return_icon('new_doc.gif', '', array(), 22);
- $return .= Display::url(get_lang('NewDocument'), api_get_self().'?'.api_get_cidreq().'&action=add_item&type='.TOOL_DOCUMENT.'&lp_id='.$_SESSION['oLP']->lp_id);
- $return .= '</div>';
- } else {
- $return .= Display::div(Display::url(Display::return_icon('delete.png', get_lang('Close'), array(), 22), ' javascript:void(0);', array('id'=>'close_div_'.$course_info['real_id'].'_'.$session_id,'class' =>'close_div')), array('style' => 'position:absolute;right:10px'));
- }
-
- // If you want to debug it, I advise you to do "echo" on the eval statements.
- if (!empty($resources) && $user_in_course) {
- foreach ($resources as $resource) {
- $is_visible = self::is_visible_by_id($resource['id'], $course_info, $session_id, api_get_user_id());
- if (!$is_visible) {
- continue;
- }
- $resource_paths = explode('/', $resource['path']);
- array_shift($resource_paths);
- $path_to_eval = $last_path = '';
- $is_file = false;
-
- if ($resource['filetype'] == 'file') {
- foreach ($resource_paths as $key => $resource_path) {
- if ($key != count($resource_paths)-1) {
- // It's a folder.
- $path_to_eval .= "['$resource_path']['files']";
- }
- $is_file = true;
- }
- } else {
- foreach ($resource_paths as $key => $resource_path) {
- if ($key != count($resource_paths) - 1) {
- // It's a folder.
- $path_to_eval .= "['$resource_path']['files']";
- }
- }
- }
- $last_path = $resource_path;
-
- //$data = json_encode(array('title'=>$resource['title'], 'path'=>$last_path));
- //@todo not sure if it's a good thing using base64_encode. I tried with json_encode but i received the same error
- //Some testing is needed in order to prove the performance
- //Also change the explode to value from "/" to "|@j@|" it fixes #3780
-
- $data = base64_encode($resource['title'].'|@j@|'.$last_path);
-
- if ($is_file) {
- //for backward compatibility
- if (empty($resource['title'])) {
- $resource['title'] = basename($resource['path']);
- }
- eval ('$resources_sorted'.$path_to_eval.'['.$resource['id'].'] = "'.$data.'" ; ');
- } else {
- eval ('$resources_sorted'.$path_to_eval.'["'.$last_path.'"]["id"]='.$resource['id'].';');
- eval ('$resources_sorted'.$path_to_eval.'["'.$last_path.'"]["title"]= "'.api_htmlentities($resource['title']).'";');
- }
- }
- }
-
- $label = get_lang('Documents');
- $new_array[$label] = array('id' => 0, 'files' => $resources_sorted);
-
- $write_result = self::write_resources_tree($course_info, $session_id, $new_array, 0, $lp_id, $target);
-
- $return .= $write_result ;
-
- $return = Display::div($return, array('class'=>'lp_resource'));
- $img_path = api_get_path(WEB_IMG_PATH);
-
- if ($lp_id == false) {
- $return .= "<script>
- $('.doc_folder').mouseover(function() {
- var my_id = this.id.split('_')[2];
- $('#'+my_id).show();
- });
-
- $('.close_div').click(function() {
- var course_id = this.id.split('_')[2];
- var session_id = this.id.split('_')[3];
- $('#document_result_'+course_id+'_'+session_id).hide();
- $('.lp_resource').remove();
- });
- </script>";
- } else {
- //For LPs
- $return .= "<script>
-
- function testResources(id, img) {
- if (document.getElementById(id).style.display=='block'){
- document.getElementById(id).style.display='none';
- document.getElementById('img_'+id).src='".$img_path."nolines_plus.gif';
- } else {
- document.getElementById(id).style.display='block';
- document.getElementById('img_'+id).src='".$img_path."nolines_minus.gif';
- }
- }
- </script>";
- }
- if(!$user_in_course) {
- $return = '';
- }
- return $return;
- }
-
- /**
- * Generate and return an HTML list of resources based on a given array.
- * This list is used to show the course creator a list of available resources to choose from
- * when creating a learning path.
- * @param array Array of elements to add to the list
- * @param integer Enables the tree display by shifting the new elements a certain distance to the right
- * @return string The HTML list
- */
- public function write_resources_tree($course_info, $session_id, $resources_sorted, $num = 0, $lp_id = false, $target = '') {
- require_once api_get_path(LIBRARY_PATH).'fileDisplay.lib.php';
-
- $img_path = api_get_path(WEB_IMG_PATH);
- $img_sys_path = api_get_path(SYS_CODE_PATH).'img/';
- $web_code_path = api_get_path(WEB_CODE_PATH);
-
- $return = '';
- if (count($resources_sorted) > 0) {
- foreach ($resources_sorted as $key => $resource) {
- $title = isset($resource['title']) ? $resource['title'] : null;
- if (empty($title)) {
- $title = $key;
- }
- //echo '<pre>'; print_r($resource);
- if (isset($resource['id']) && is_int($resource['id'])) {
- // It's a folder.
- //hide some folders
- if (in_array($key, array('shared_folder','chat_files', 'HotPotatoes_files', 'css', 'certificates'))){
- continue;
- } elseif(preg_match('/_groupdocs/', $key)){
- continue;
- } elseif(preg_match('/sf_user_/', $key)){
- continue;
- } elseif(preg_match('/shared_folder_session_/', $key)){
- continue;
- }
-
- //trad some titles
- if ($key=='images') {
- $key=get_lang('Images');
- } elseif($key=='gallery') {
- $key=get_lang('Gallery');
- } elseif($key=='flash') {
- $key=get_lang('Flash');
- } elseif($key=='audio'){
- $key=get_lang('Audio');
- } elseif($key=='video') {
- $key=get_lang('Video');
- }
-
- $onclick = '';
- if ($lp_id) {
- $onclick = 'onclick="javascript: testResources(\'' . $resource['id'] . '\',\'img_' . $resource['id'] . '\')"';
- }
-
- $return .= '<div class="doc_resource">';
- $return .= '<div class="doc_folder" id="doc_id_'.$resource['id'].'" style="margin-left:'.($num * 18).'px; margin-right:5px;">';
- if ($lp_id) {
- $return .= '<img style="cursor: pointer;" src="'.$img_path.'nolines_plus.gif" align="absmiddle" id="img_' . $resource['id'] . '" '.$onclick.' >';
- } else {
- $return .= '<span style="margin-left:16px"> </span>';
- }
- $return .= '<img alt="" src="'.$img_path.'lp_folder.gif" title="" align="absmiddle" /> ';
- $return .= '<span '.$onclick.' style="cursor: pointer;" >'.$title.'</span>';
- $return .= '</div>
- <div style="display: none;" id="'.$resource['id'].'">';
-
- if (isset($resource['files'])) {
- $return .= self::write_resources_tree($course_info, $session_id, $resource['files'], $num +1, $lp_id, $target);
- }
- $return .= '</div></div>';
- } else {
- if (!is_array($resource)) {
- //if (isset($resource)) {
- //var_dump($resource);
- $resource = base64_decode($resource);
- // It's a file.
- $icon = choose_image($resource);
- $position = strrpos($icon, '.');
- $icon = substr($icon, 0, $position) . '_small.gif';
- $file_info = explode('|@j@|', $resource);
- $my_file_title = $file_info[0];
- $my_file_name = $file_info[1];
- // Show the "image name" not the filename of the image.
- if ($lp_id) {
- //LP URL
- $lp_id = $this->lp_id;
- $url = api_get_self() . '?cidReq=' . Security::remove_XSS($_GET['cidReq']) . '&action=add_item&type=' . TOOL_DOCUMENT . '&file=' . $key . '&lp_id=' .$lp_id;
- } else {
- //Direct document URL
- $url = $web_code_path.'document/document.php?cidReq='.$course_info['code'].'&id_session='.$session_id.'&id='.$key;
- }
- $img = $img_path.$icon;
- if (!file_exists($img_sys_path.$icon)) {
- $img = $img_path.'icons/16/default_small.gif';
- }
-
- $link = Display::url('<img alt="" src="'.$img.'" title="" /> ' . $my_file_title, $url, array('target' => $target));
-
- $return .= '<div class="doc_resource"><div style="margin-left:' . (($num +1) * 18) . 'px;margin-right:5px;">';
- $return .= $link;
- $return .= '</div></div>';
- }
- }
- }
- }
- return $return;
- }
-
- public function check_visibility_tree($doc_id, $course_code, $session_id, $user_id) {
- $document_data = self::get_document_data_by_id($doc_id, $course_code);
-
- if (!empty($document_data)) {
- //if admin or course teacher, allow anyway
- if (api_is_platform_admin() || CourseManager::is_course_teacher($user_id,$course_code)) { return true; }
- $course_info = api_get_course_info($course_code);
- if ($document_data['parent_id'] == false || empty($document_data['parent_id'])) {
- $visible = self::is_visible_by_id($doc_id, $course_info, $session_id, $user_id);
- return $visible;
- } else {
- $course_info = api_get_course_info($course_code);
- $visible = self::is_visible_by_id($doc_id, $course_info, $session_id, $user_id);
-
- if (!$visible) {
- return false;
- } else {
- return self::check_visibility_tree($document_data['parent_id'], $course_code, $session_id, $user_id);
- }
- }
- } else {
- return false;
- }
- }
-
- /**
- * Index a given document.
- * @param int Document ID inside its corresponding course
- * @param string Course code
- * @param int Session ID (not used yet)
- * @param string Language of document's content (defaults to course language)
- * @param array Array of specific fields (['code'=>'value',...])
- * @param string What to do if the file already exists (default or overwrite)
- * @param bool When set to true, this runs the indexer without actually saving anything to any database
- * @return bool Returns true on presumed success, false on failure
- */
- public function index_document($docid, $course_code, $session_id=0, $lang='english', $specific_fields_values=array(), $if_exists = '', $simulation = false) {
- if (api_get_setting('search_enabled') !== 'true') {
- return false;
- }
- if (empty($docid) or $docid != intval($docid)) {
- return false;
- }
- if (empty($session_id)) {
- $session_id = api_get_session_id();
- }
- $course_info = api_get_course_info($course_code);
- $course_dir = $course_info['path'].'/document';
- $sys_course_path = api_get_path(SYS_COURSE_PATH);
- $base_work_dir = $sys_course_path.$course_dir;
-
- $course_id = $course_info['real_id'];
- $table_document = Database::get_course_table(TABLE_DOCUMENT);
-
- $qry = "SELECT path, title FROM $table_document WHERE c_id = $course_id AND id = '$docid' LIMIT 1";
- $result = Database::query($qry);
- if (Database::num_rows($result) == 1) {
- $row = Database::fetch_array($result);
- $doc_path = api_get_path(SYS_COURSE_PATH).$course_dir.$row['path'];
- //TODO: mime_content_type is deprecated, fileinfo php extension is enabled by default as of PHP 5.3.0
- // now versions of PHP on Debian testing(5.2.6-5) and Ubuntu(5.2.6-2ubuntu) are lower, so wait for a while
- $doc_mime = mime_content_type($doc_path);
- //echo $doc_mime;
- $allowed_mime_types = self::file_get_mime_type(true);
- // mime_content_type does not detect correctly some formats that are going to be supported for index, so an extensions array is used for the moment
- if (empty($doc_mime)) {
- $allowed_extensions = array('doc', 'docx', 'ppt', 'pptx', 'pps', 'ppsx', 'xls', 'xlsx', 'odt', 'odp', 'ods', 'pdf', 'txt', 'rtf', 'msg', 'csv', 'html', 'htm');
- $extensions = preg_split("/[\/\\.]/", $doc_path) ;
- $doc_ext = strtolower($extensions[count($extensions) - 1]);
- if (in_array($doc_ext, $allowed_extensions)) {
- switch ($doc_ext) {
- case 'ppt':
- case 'pps':
- $doc_mime = 'application/vnd.ms-powerpoint';
- break;
- case 'xls':
- $doc_mime = 'application/vnd.ms-excel';
- break;
- }
- }
- }
- //@todo move this nightmare in a search controller or something like that!!! J.M
-
- if (in_array($doc_mime, $allowed_mime_types)) {
- $file_title = $row['title'];
- $file_content = self::get_text_content($doc_path, $doc_mime);
- $course_code = Database::escape_string($course_code);
- require_once api_get_path(LIBRARY_PATH).'search/DokeosIndexer.class.php';
- require_once api_get_path(LIBRARY_PATH).'search/IndexableChunk.class.php';
- $ic_slide = new IndexableChunk();
- $ic_slide->addValue('title', $file_title);
- $ic_slide->addCourseId($course_code);
- $ic_slide->addToolId(TOOL_DOCUMENT);
- $xapian_data = array(
- SE_COURSE_ID => $course_code,
- SE_TOOL_ID => TOOL_DOCUMENT,
- SE_DATA => array('doc_id' => $docid),
- SE_USER => api_get_user_id(),
- );
- //var_dump($xapian_data); echo '<pre>';
- $ic_slide->xapian_data = serialize($xapian_data);
- $di = new DokeosIndexer();
- $return = $di->connectDb(null, null, $lang);
-
- require_once api_get_path(LIBRARY_PATH).'specific_fields_manager.lib.php';
- $specific_fields = get_specific_field_list();
- // process different depending on what to do if file exists
- /**
- * @TODO Find a way to really verify if the file had been
- * overwriten. Now all work is done at
- * handle_uploaded_document() and it's difficult to verify it
- */
- if (!empty($if_exists) && $if_exists == 'overwrite') {
- // Overwrite the file on search engine
- // Actually, it consists on a delete of terms from db,
- // insert new ones, create a new search engine document,
- // and remove the old one
- // Get search_did
- $tbl_se_ref = Database::get_main_table(TABLE_MAIN_SEARCH_ENGINE_REF);
- $sql = 'SELECT * FROM %s WHERE course_code=\'%s\' AND tool_id=\'%s\' AND ref_id_high_level=%s LIMIT 1';
- $sql = sprintf($sql, $tbl_se_ref, $course_code, TOOL_DOCUMENT, $docid);
- $res = Database::query($sql);
- if (Database::num_rows($res) > 0) {
- $se_ref = Database::fetch_array($res);
- if (!$simulation) {
- $di->remove_document($se_ref['search_did']);
- }
- $all_specific_terms = '';
- foreach ($specific_fields as $specific_field) {
- if (!$simulation) {
- delete_all_specific_field_value($course_code, $specific_field['id'], TOOL_DOCUMENT, $docid);
- }
- // Update search engine
- if (isset($specific_fields_values[$specific_field['code']])) {
- $sterms = trim($specific_fields_values[$specific_field['code']]);
- } else { //if the specific field is not defined, force an empty one
- $sterms = '';
- }
- $all_specific_terms .= ' '. $sterms;
- $sterms = explode(',', $sterms);
- foreach ($sterms as $sterm) {
- $sterm = trim($sterm);
- if (!empty($sterm)) {
- $ic_slide->addTerm($sterm, $specific_field['code']);
- // updated the last param here from $value to $sterm without being sure - see commit15464
- if (!$simulation) {
- add_specific_field_value($specific_field['id'], $course_code, TOOL_DOCUMENT, $docid, $sterm);
- }
- }
- }
- }
- // Add terms also to content to make terms findable by probabilistic search
- $file_content = $all_specific_terms .' '. $file_content;
- if (!$simulation) {
- $ic_slide->addValue('content', $file_content);
- $di->addChunk($ic_slide);
- // Index and return a new search engine document id
- $did = $di->index();
- //var_dump($did);
- if ($did) {
- // update the search_did on db
- $tbl_se_ref = Database::get_main_table(TABLE_MAIN_SEARCH_ENGINE_REF);
- $sql = 'UPDATE %s SET search_did=%d WHERE id=%d LIMIT 1';
- $sql = sprintf($sql, $tbl_se_ref, (int)$did, (int)$se_ref['id']);
- Database::query($sql);
- }
- }
- }
- } else {
- // Add all terms
- $all_specific_terms = '';
- foreach ($specific_fields as $specific_field) {
- if (isset($specific_fields_values[$specific_field['code']])) {
- $sterms = trim($specific_fields_values[$specific_field['code']]);
- } else { //if the specific field is not defined, force an empty one
- $sterms = '';
- }
- $all_specific_terms .= ' '. $sterms;
- if (!empty($sterms)) {
- $sterms = explode(',', $sterms);
- foreach ($sterms as $sterm) {
- if (!$simulation) {
- $ic_slide->addTerm(trim($sterm), $specific_field['code']);
- add_specific_field_value($specific_field['id'], $course_code, TOOL_DOCUMENT, $docid, $sterm);
- }
- }
- }
- }
- // Add terms also to content to make terms findable by probabilistic search
- $file_content = $all_specific_terms .' '. $file_content;
- if (!$simulation) {
- $ic_slide->addValue('content', $file_content);
- $di->addChunk($ic_slide);
- // Index and return search engine document id
- $did = $di->index();
- if ($did) {
- // Save it to db
- $tbl_se_ref = Database::get_main_table(TABLE_MAIN_SEARCH_ENGINE_REF);
- $sql = 'INSERT INTO %s (id, course_code, tool_id, ref_id_high_level, search_did)
- VALUES (NULL , \'%s\', \'%s\', %s, %s)';
- $sql = sprintf($sql, $tbl_se_ref, $course_code, TOOL_DOCUMENT, $docid, $did);
- Database::query($sql);
- } else {
- return false;
- }
- }
- }
- } else {
- return false;
- }
- }
- return true;
- }
- }
- //end class DocumentManager
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