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<?php
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// $Id: filerequest.module,v 1.2.2.2 2006/03/26 15:08:08 elmuerte Exp $
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function filerequest_help($section) {
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switch ($section) {
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case 'admin/modules#description':
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return t('Properly handles file requests for download method "private". Also provides anti leeching features.');
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}
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}
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/**
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* Override the menu for system/files to capture the private.
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*/
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function filerequest_menu($may_cache) {
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$items = array();
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//if ($may_cache) { // never cache to overrule the builtin one
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$items[] = array('path' => 'system/files', 'title' => t('file download'),
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'callback' => '_filerequest_download',
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'access' => TRUE,
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'weight' => 10,
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'type' => MENU_CALLBACK);
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//}
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return $items;
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}
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/**
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* Show settings. Used for anti-leech and config file generation
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*/
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function filerequest_settings() {
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$form['settings'] = array(
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'#type' => 'fieldset',
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'#title' => t('filerequest settings'),
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);
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$form['settings']['filereq_antileech_enabled'] = array(
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'#type' => 'checkbox',
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'#title' => t('Anti-leech enabled'),
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'#return_value' => 1,
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'#default_value' => variable_get('filereq_antileech_enabled', true),
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'#description' => t('Prevent other sites from directly linking to files'),
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);
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$form['settings']['filereq_antileech_regex'] = array(
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'#type' => 'textfield',
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'#title' => t('Valid host'),
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'#default_value' => variable_get('filereq_antileech_regex', preg_quote($_SERVER["HTTP_HOST"])),
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'#size' => 72,
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'#maxlength' => 65535,
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'#description' => t('A regular expression defining hosts that are allowed to directly link to the file. This should at least cover the current host.'),
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);
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$opts[0] = "Normal";
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$opts[1] = "Add a watermark";
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$opts[2] = "Replace the image";
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$form['settings']['filereq_antileech_image_mode'] = array(
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'#type' => 'select',
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'#title' => t('Image mode'),
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'#default_value' => variable_get('filereq_antileech_image_mode', 0),
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'#options' => $opts,
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'#description' => t('Special behavior when leeching images.'),
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);
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$form['settings']['filereq_antileech_image_file'] = array(
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'#type' => 'textfield',
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'#title' => t('Image file'),
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'#default_value' => variable_get('filereq_antileech_image_file', ""),
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'#size' => 72,
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'#maxlength' => 65535,
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'#description' => t('The image to used when special image handling is enabled. This path is relative to the drupal base directory. <br />In case of the watermark mode the image has to be a 24 bit PNG file. Hint: make use of the alpha channels for PNGs.'),
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);
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$form['config'] = array(
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'#type' => 'fieldset',
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'#title' => t('modules/filerequest/throttle.config.php'),
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'#description' => t('Use the following configuration if you added the .htaccess lines as provided in the README.TXT .')
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);
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$form['config'][] = array(
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'#value' => "<textarea rows=\"7\" cols=\"72\" readonly=\"readonly\" wrap=\"off\"><?php\n\$config[\"filereq_antileech_enabled\"] = ".variable_get('filereq_antileech_enabled', true).";\n\$config[\"filereq_antileech_regex\"] = \"".addslashes(variable_get('filereq_antileech_regex', preg_quote($_SERVER["HTTP_HOST"])))."\";\n\$config[\"filereq_fspath\"] = \"".addslashes(file_create_path())."\";\n\$config[\"filereq_antileech_image_mode\"] = ".variable_get('filereq_antileech_image_mode', 0).";\n\$config[\"filereq_antileech_image_file\"] = \"".addslashes(variable_get('filereq_antileech_image_file', "modules/filerequest/watermark.png"))."\";\n?></textarea>"
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);
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return $form;
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}
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/**
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* Process the download request. If it's a file leecher redirect it to the
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* associated node, otherwise return an access_denied error.
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*/
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function _filerequest_download() {
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define("__DRUPAL_BASE_DIR", dirname(dirname(dirname(__FILE__))).DIRECTORY_SEPARATOR);
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require_once("downloadhandler.php");
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$config["filename"] = $_GET['file'];
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$config["filereq_antileech_enabled"] = variable_get('filereq_antileech_enabled', true);
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$config["filereq_antileech_regex"] = variable_get('filereq_antileech_regex', preg_quote($_SERVER["HTTP_HOST"]));
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$config["filereq_antileech_image_mode"] = variable_get('filereq_antileech_image_mode', 0);
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$config["filereq_antileech_image_file"] = variable_get('filereq_antileech_image_file', "modules/filerequest/watermark.png");
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if (!__fr_can_download_file($config)) define("__FILEREQ_LEECH", $file);
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if (defined("__FILEREQ_LEECH"))
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{
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$result = db_result(db_query("SELECT nid FROM {files} WHERE filepath = '%s'", $config["filename"]));
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if ($result !== false)
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{
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drupal_goto("node/".$result);
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exit;
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}
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drupal_access_denied();
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return;
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}
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$config["filename"] = file_create_path($config["filename"]);
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if (file_exists($config["filename"])) {
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$list = module_list();
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foreach ($list as $module) {
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$headers = module_invoke($module, 'file_download', $_GET['file']);
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if (in_array(-1, $headers)) {
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return drupal_access_denied();
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}
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elseif (is_array($headers)) {
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// make sure no caching headers are set
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header("Cache-Control:");
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header("Pragma:");
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header("Expires:");
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__fr_process_download($config["filename"], preg_match("#(\?|&)download(&|$)#", $_SERVER["REQUEST_URI"]), $config["watermark"]);
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exit();
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}
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}
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}
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drupal_not_found();
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}
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