'. t('The restrictions are applied to all users except administration account with ID=\'1\'. If a user belongs to several roles, then the less restrictive rules are applied.') .'

'; } } /** * Implementation of hook_menu(). */ function file_restriction_menu() { return array( 'admin/settings/file/restriction' => array( 'title' => 'Restrictions', 'page callback' => 'drupal_get_form', 'page arguments' => array('file_restriction_admin_settings'), 'access arguments' => array('administer site configuration'), 'file' => 'file_restriction.admin.inc', ), ); } ////////////////////////////////////////////////////////////////////////////// // File API extensions /** * Implementation of the hook_file_validate(). */ function file_restriction_file_validate($file) { global $user; $restrictions = _file_restriction_get_restrictions(); return $user->uid == 1 ? array() : array_merge( !empty($restrictions['extensions_allowed']) ? file_validate_extensions($file, $restrictions['extensions_allowed']) : array(), !empty($restrictions['size']) ? file_validate_size($file, $restrictions['size']) : array(), !empty($restrictions['quota']) ? _file_restriction_validate_quota($file) : array() ); } /** * Returns the description of applied restrictions. * * @return * An array of valid restrictions descriptions. */ function file_restriction_description() { global $user; if ($user->uid == 1) { return array(t('The maximum upload size is %filesize.', array('%filesize' => format_size(file_upload_max_size())))); } $restrictions = _file_restriction_get_restrictions(); $used = file_get_files_size($user->uid, $restrictions['quota_generated']); return array_merge( //!empty($restrictions['extensions_allowed']) ? array(t('Only files with the following extensions may be uploaded: %extensions_allowed.', array('%extensions_allowed' => $restrictions['extensions_allowed']))) : array(), array(t('The maximum upload size is %filesize.', array('%filesize' => format_size(min($restrictions['size'], file_upload_max_size()))))), !empty($restrictions['quota']) ? ($restrictions['quota'] > $used ? array(t('You can upload %size untill you reach your quota limits.', array('%size' => format_size($restrictions['quota'] - $used)))) : array(t('You have reach your quota limits of %size. No new files are allowed.', array('%size' => format_size($restrictions['quota']))))) : array() ); } ////////////////////////////////////////////////////////////////////////////// // File validators /** * Validates if the user does not exceed the quota. * * @param $file * A file object. * * @return * An empty array or array with the error messages. */ function _file_restriction_validate_quota($file) { global $user; $restrictions = _file_restriction_get_restrictions(); $errors = array(); // Bypass validation for uid = 1. if ($user->uid != 1) { if (file_get_files_size($user->uid, $restrictions['quota_generated']) + $file->filesize > $restrictions['quota']) { $errors[] = t('The uploaded file exceeds your disk quota of %quota.', array('%quota' => format_size($restrictions['quota']))); } } return $errors; } ////////////////////////////////////////////////////////////////////////////// // Auxiliary functions /** * Returns an array of the restrictions for particular user. * */ function _file_restriction_get_restrictions() { static $restrictions; global $user; if (!$restrictions) { $extensions_allowed = explode(' ', FILE_RESTRICTION_EXTENSIONS_ALLOWED); $size = FILE_RESTRICTION_SIZE * 1024*1024; $quota = FILE_RESTRICTION_QUOTA * 1024*1024; $quota_generated = FILE_RESTRICTION_QUOTA_GENERATED; $roles_extensions_allowed = variable_get('file_restriction_roles_extensions_allowed', array()); $roles_size = variable_get('file_restriction_roles_size', array()); $roles_quota = variable_get('file_restriction_roles_quota', array()); $roles_quota_generated = variable_get('file_restriction_roles_quota_generated', array()); foreach ($user->roles as $rid => $name) { if (isset($roles_extensions_allowed[$rid])) $extensions_allowed = array_merge($extensions_allowed, explode(' ', $roles_extensions_allowed[$rid])); if (isset($roles_size[$rid])) $size = max($size, $roles_size[$rid] * 1024*1024); if (isset($roles_quota[$rid])) $quota = max($quota, $roles_quota[$rid] * 1024*1024); $quota_generated = min($quota_generated, isset($roles_quota_generated[$rid]) ? $roles_quota_generated[$rid] : 1); } $restrictions = array( 'extensions_allowed' => implode(' ', $extensions_allowed), 'size' => $size, 'quota' => $quota, 'quota_generated' => $quota_generated, ); } return $restrictions; } /** * Prints a file restrictions js on the file upload form. * * @param $selector * A jquery selector of the file input element. * @param $restrictions * An array of restrictions to override default ones. * @param $inline * A flag showing if a javascript code should be returned. */ function file_restriction_js($selector, $restrictions = array(), $inline = FALSE) { global $user; $restrictions_default = _file_restriction_get_restrictions(); $extensions_allowed = isset($restrictions['extensions_allowed']) ? $restrictions['extensions_allowed'] : $restrictions_default['extensions_allowed']; if ($user->uid != 1 && !empty($extensions_allowed)) { static $initialized = FALSE; if (!$initialized) { $initialized = TRUE; drupal_add_css(drupal_get_path('module', 'file_restriction') .'/file_restriction.css', 'module'); drupal_add_js(drupal_get_path('module', 'file_restriction') .'/file_restriction.js', 'module'); drupal_add_js(array( 'file_restriction' => array( 'extensions_allowed' => $restrictions_default['extensions_allowed'], 'description' => t('The selected file could not be uploaded. Only files with the following extensions are allowed:'))), 'setting' ); } $js = 'Drupal.file_restrictionExtensions("'. $selector .'", "'. $extensions_allowed .'");'; if ($inline) return ""; drupal_add_js('$(document).ready(function() { '. $js .' });', 'inline'); } }