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Differences Between: [Versions 400 and 401] [Versions 400 and 402] [Versions 400 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Bulk upload of user pictures
  19   *
  20   * Based on .../admin/uploaduser.php and .../lib/gdlib.php
  21   *
  22   * @package    tool
  23   * @subpackage uploaduser
  24   * @copyright  (C) 2007 Inaki Arenaza
  25   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  26   */
  27  
  28  require('../../../config.php');
  29  require_once($CFG->libdir.'/adminlib.php');
  30  require_once($CFG->libdir.'/gdlib.php');
  31  require_once ('picture_form.php');
  32  
  33  define ('PIX_FILE_UPDATED', 0);
  34  define ('PIX_FILE_ERROR',   1);
  35  define ('PIX_FILE_SKIPPED', 2);
  36  
  37  admin_externalpage_setup('tooluploaduserpictures');
  38  
  39  require_capability('tool/uploaduser:uploaduserpictures', context_system::instance());
  40  
  41  $site = get_site();
  42  
  43  if (!$adminuser = get_admin()) {
  44      print_error('noadmins', 'error');
  45  }
  46  
  47  $strfile = get_string('file');
  48  $struser = get_string('user');
  49  $strusersupdated = get_string('usersupdated', 'tool_uploaduser');
  50  $struploadpictures = get_string('uploadpictures','tool_uploaduser');
  51  
  52  $userfields = array (
  53      0 => 'username',
  54      1 => 'idnumber',
  55      2 => 'id' );
  56  
  57  $userfield = optional_param('userfield', 0, PARAM_INT);
  58  $overwritepicture = optional_param('overwritepicture', 0, PARAM_BOOL);
  59  
  60  /// Print the header
  61  echo $OUTPUT->header();
  62  
  63  echo $OUTPUT->heading_with_help($struploadpictures, 'uploadpictures', 'tool_uploaduser');
  64  
  65  $mform = new admin_uploadpicture_form(null, $userfields);
  66  if ($formdata = $mform->get_data()) {
  67      if (!array_key_exists($userfield, $userfields)) {
  68          echo $OUTPUT->notification(get_string('uploadpicture_baduserfield', 'tool_uploaduser'));
  69      } else {
  70          // Large files are likely to take their time and memory. Let PHP know
  71          // that we'll take longer, and that the process should be recycled soon
  72          // to free up memory.
  73          core_php_time_limit::raise();
  74          raise_memory_limit(MEMORY_EXTRA);
  75  
  76          // Create a unique temporary directory, to process the zip file
  77          // contents.
  78          $zipdir = my_mktempdir($CFG->tempdir.'/', 'usrpic');
  79          $dstfile = $zipdir.'/images.zip';
  80  
  81          if (!$mform->save_file('userpicturesfile', $dstfile, true)) {
  82              echo $OUTPUT->notification(get_string('uploadpicture_cannotmovezip', 'tool_uploaduser'));
  83              @remove_dir($zipdir);
  84          } else {
  85              $fp = get_file_packer('application/zip');
  86              $unzipresult = $fp->extract_to_pathname($dstfile, $zipdir);
  87              if (!$unzipresult) {
  88                  echo $OUTPUT->notification(get_string('uploadpicture_cannotunzip', 'tool_uploaduser'));
  89                  @remove_dir($zipdir);
  90              } else {
  91                  // We don't need the zip file any longer, so delete it to make
  92                  // it easier to process the rest of the files inside the directory.
  93                  @unlink($dstfile);
  94  
  95                  $results = array ('errors' => 0,'updated' => 0);
  96  
  97                  process_directory($zipdir, $userfields[$userfield], $overwritepicture, $results);
  98  
  99  
 100                  // Finally remove the temporary directory with all the user images and print some stats.
 101                  remove_dir($zipdir);
 102                  echo $OUTPUT->notification(get_string('usersupdated', 'tool_uploaduser') . ": " . $results['updated'], 'notifysuccess');
 103                  echo $OUTPUT->notification(get_string('errors', 'tool_uploaduser') . ": " . $results['errors'], ($results['errors'] ? 'notifyproblem' : 'notifysuccess'));
 104                  echo '<hr />';
 105              }
 106          }
 107      }
 108  }
 109  $mform->display();
 110  echo $OUTPUT->footer();
 111  exit;
 112  
 113  // ----------- Internal functions ----------------
 114  
 115  /**
 116   * Create a unique temporary directory with a given prefix name,
 117   * inside a given directory, with given permissions. Return the
 118   * full path to the newly created temp directory.
 119   *
 120   * @param string $dir where to create the temp directory.
 121   * @param string $prefix prefix for the temp directory name (default '')
 122   *
 123   * @return string The full path to the temp directory.
 124   */
 125  function my_mktempdir($dir, $prefix='') {
 126      global $CFG;
 127  
 128      if (substr($dir, -1) != '/') {
 129          $dir .= '/';
 130      }
 131  
 132      do {
 133          $path = $dir.$prefix.mt_rand(0, 9999999);
 134      } while (file_exists($path));
 135  
 136      check_dir_exists($path);
 137  
 138      return $path;
 139  }
 140  
 141  /**
 142   * Recursively process a directory, picking regular files and feeding
 143   * them to process_file().
 144   *
 145   * @param string $dir the full path of the directory to process
 146   * @param string $userfield the prefix_user table field to use to
 147   *               match picture files to users.
 148   * @param bool $overwrite overwrite existing picture or not.
 149   * @param array $results (by reference) accumulated statistics of
 150   *              users updated and errors.
 151   *
 152   * @return nothing
 153   */
 154  function process_directory ($dir, $userfield, $overwrite, &$results) {
 155      global $OUTPUT;
 156      if(!($handle = opendir($dir))) {
 157          echo $OUTPUT->notification(get_string('uploadpicture_cannotprocessdir', 'tool_uploaduser'));
 158          return;
 159      }
 160  
 161      while (false !== ($item = readdir($handle))) {
 162          if ($item != '.' && $item != '..') {
 163              if (is_dir($dir.'/'.$item)) {
 164                  process_directory($dir.'/'.$item, $userfield, $overwrite, $results);
 165              } else if (is_file($dir.'/'.$item))  {
 166                  $result = process_file($dir.'/'.$item, $userfield, $overwrite);
 167                  switch ($result) {
 168                      case PIX_FILE_ERROR:
 169                          $results['errors']++;
 170                          break;
 171                      case PIX_FILE_UPDATED:
 172                          $results['updated']++;
 173                          break;
 174                  }
 175              }
 176              // Ignore anything else that is not a directory or a file (e.g.,
 177              // symbolic links, sockets, pipes, etc.)
 178          }
 179      }
 180      closedir($handle);
 181  }
 182  
 183  /**
 184   * Given the full path of a file, try to find the user the file
 185   * corresponds to and assign him/her this file as his/her picture.
 186   * Make extensive checks to make sure we don't open any security holes
 187   * and report back any success/error.
 188   *
 189   * @param string $file the full path of the file to process
 190   * @param string $userfield the prefix_user table field to use to
 191   *               match picture files to users.
 192   * @param bool $overwrite overwrite existing picture or not.
 193   *
 194   * @return integer either PIX_FILE_UPDATED, PIX_FILE_ERROR or
 195   *                  PIX_FILE_SKIPPED
 196   */
 197  function process_file ($file, $userfield, $overwrite) {
 198      global $DB, $OUTPUT;
 199  
 200      // Add additional checks on the filenames, as they are user
 201      // controlled and we don't want to open any security holes.
 202      $path_parts = pathinfo(cleardoubleslashes($file));
 203      $basename  = $path_parts['basename'];
 204      $extension = $path_parts['extension'];
 205  
 206      // The picture file name (without extension) must match the
 207      // userfield attribute.
 208      $uservalue = substr($basename, 0,
 209                          strlen($basename) -
 210                          strlen($extension) - 1);
 211  
 212      // userfield names are safe, so don't quote them.
 213      if (!($user = $DB->get_record('user', array ($userfield => $uservalue, 'deleted' => 0)))) {
 214          $a = new stdClass();
 215          $a->userfield = clean_param($userfield, PARAM_CLEANHTML);
 216          $a->uservalue = clean_param($uservalue, PARAM_CLEANHTML);
 217          echo $OUTPUT->notification(get_string('uploadpicture_usernotfound', 'tool_uploaduser', $a));
 218          return PIX_FILE_ERROR;
 219      }
 220  
 221      $haspicture = $DB->get_field('user', 'picture', array('id'=>$user->id));
 222      if ($haspicture && !$overwrite) {
 223          echo $OUTPUT->notification(get_string('uploadpicture_userskipped', 'tool_uploaduser', $user->username));
 224          return PIX_FILE_SKIPPED;
 225      }
 226  
 227      if ($newrev = my_save_profile_image($user->id, $file)) {
 228          $DB->set_field('user', 'picture', $newrev, array('id'=>$user->id));
 229          echo $OUTPUT->notification(get_string('uploadpicture_userupdated', 'tool_uploaduser', $user->username), 'notifysuccess');
 230          return PIX_FILE_UPDATED;
 231      } else {
 232          echo $OUTPUT->notification(get_string('uploadpicture_cannotsave', 'tool_uploaduser', $user->username));
 233          return PIX_FILE_ERROR;
 234      }
 235  }
 236  
 237  /**
 238   * Try to save the given file (specified by its full path) as the
 239   * picture for the user with the given id.
 240   *
 241   * @param integer $id the internal id of the user to assign the
 242   *                picture file to.
 243   * @param string $originalfile the full path of the picture file.
 244   *
 245   * @return mixed new unique revision number or false if not saved
 246   */
 247  function my_save_profile_image($id, $originalfile) {
 248      $context = context_user::instance($id);
 249      return process_new_icon($context, 'user', 'icon', 0, $originalfile);
 250  }
 251  
 252