1105 lines
40 KiB
PHP
1105 lines
40 KiB
PHP
<?php
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// $Id$
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/**
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* @file
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* API for handling file uploads and server file management.
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*/
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/**
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* @defgroup file File interface
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* @{
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* Common file handling functions.
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*/
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define('FILE_DOWNLOADS_PUBLIC', 1);
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define('FILE_DOWNLOADS_PRIVATE', 2);
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define('FILE_CREATE_DIRECTORY', 1);
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define('FILE_MODIFY_PERMISSIONS', 2);
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define('FILE_EXISTS_RENAME', 0);
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define('FILE_EXISTS_REPLACE', 1);
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define('FILE_EXISTS_ERROR', 2);
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/**
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* Create the download path to a file.
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*
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* @param $path A string containing the path of the file to generate URL for.
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* @return A string containing a URL that can be used to download the file.
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*/
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function file_create_url($path) {
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// Strip file_directory_path from $path. We only include relative paths in urls.
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if (strpos($path, file_directory_path() . '/') === 0) {
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$path = trim(substr($path, strlen(file_directory_path())), '\\/');
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}
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switch (variable_get('file_downloads', FILE_DOWNLOADS_PUBLIC)) {
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case FILE_DOWNLOADS_PUBLIC:
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return $GLOBALS['base_url'] .'/'. file_directory_path() .'/'. str_replace('\\', '/', $path);
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case FILE_DOWNLOADS_PRIVATE:
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return url('system/files/'. $path, NULL, NULL, TRUE);
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}
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}
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/**
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* Make sure the destination is a complete path and resides in the file system
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* directory, if it is not prepend the file system directory.
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*
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* @param $dest A string containing the path to verify. If this value is
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* omitted, Drupal's 'files' directory will be used.
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* @return A string containing the path to file, with file system directory
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* appended if necessary, or FALSE if the path is invalid (i.e. outside the
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* configured 'files' or temp directories).
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*/
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function file_create_path($dest = 0) {
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$file_path = file_directory_path();
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if (!$dest) {
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return $file_path;
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}
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// file_check_location() checks whether the destination is inside the Drupal files directory.
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if (file_check_location($dest, $file_path)) {
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return $dest;
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}
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// check if the destination is instead inside the Drupal temporary files directory.
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else if (file_check_location($dest, file_directory_temp())) {
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return $dest;
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}
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// Not found, try again with prefixed directory path.
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else if (file_check_location($file_path . '/' . $dest, $file_path)) {
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return $file_path . '/' . $dest;
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}
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// File not found.
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return FALSE;
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}
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/**
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* Check that the directory exists and is writable. Directories need to
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* have execute permissions to be considered a directory by FTP servers, etc.
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*
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* @param $directory A string containing the name of a directory path.
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* @param $mode A Boolean value to indicate if the directory should be created
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* if it does not exist or made writable if it is read-only.
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* @param $form_item An optional string containing the name of a form item that
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* any errors will be attached to. This is useful for settings forms that
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* require the user to specify a writable directory. If it can't be made to
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* work, a form error will be set preventing them from saving the settings.
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* @return FALSE when directory not found, or TRUE when directory exists.
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*/
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function file_check_directory(&$directory, $mode = 0, $form_item = NULL) {
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$directory = rtrim($directory, '/\\');
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// Check if directory exists.
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if (!is_dir($directory)) {
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if (($mode & FILE_CREATE_DIRECTORY) && @mkdir($directory)) {
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drupal_set_message(t('The directory %directory has been created.', array('%directory' => $directory)));
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@chmod($directory, 0775); // Necessary for non-webserver users.
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}
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else {
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if ($form_item) {
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form_set_error($form_item, t('The directory %directory does not exist.', array('%directory' => $directory)));
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}
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return FALSE;
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}
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}
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// Check to see if the directory is writable.
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if (!is_writable($directory)) {
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if (($mode & FILE_MODIFY_PERMISSIONS) && @chmod($directory, 0775)) {
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drupal_set_message(t('The permissions of directory %directory have been changed to make it writable.', array('%directory' => $directory)));
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}
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else {
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form_set_error($form_item, t('The directory %directory is not writable', array('%directory' => $directory)));
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watchdog('file system', t('The directory %directory is not writable, because it does not have the correct permissions set.', array('%directory' => $directory)), WATCHDOG_ERROR);
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return FALSE;
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}
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}
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if ((file_directory_path() == $directory || file_directory_temp() == $directory) && !is_file("$directory/.htaccess")) {
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$htaccess_lines = "SetHandler Drupal_Security_Do_Not_Remove_See_SA_2006_006\nOptions None\nOptions +FollowSymLinks";
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if (($fp = fopen("$directory/.htaccess", 'w')) && fputs($fp, $htaccess_lines)) {
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fclose($fp);
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chmod($directory .'/.htaccess', 0664);
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}
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else {
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$message = t("Security warning: Couldn't write .htaccess file. Please create a .htaccess file in your %directory directory which contains the following lines: <code>!htaccess</code>", array('%directory' => $directory, '!htaccess' => '<br />'. nl2br(check_plain($htaccess_lines))));
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form_set_error($form_item, $message);
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watchdog('security', $message, WATCHDOG_ERROR);
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}
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}
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return TRUE;
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}
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/**
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* Checks path to see if it is a directory, or a dir/file.
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*
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* @param $path A string containing a file path. This will be set to the
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* directory's path.
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* @return If the directory is not in a Drupal writable directory, FALSE is
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* returned. Otherwise, the base name of the path is returned.
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*/
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function file_check_path(&$path) {
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// Check if path is a directory.
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if (file_check_directory($path)) {
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return '';
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}
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// Check if path is a possible dir/file.
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$filename = basename($path);
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$path = dirname($path);
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if (file_check_directory($path)) {
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return $filename;
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}
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return FALSE;
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}
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/**
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* Verify an uploaded file.
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*
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* Check if $source is a valid file upload. If so, move the file to the
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* temporary directory and return it as an object.
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*
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* @param $source
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* An upload source (the name of the upload form item), or a file.
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* @return
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* FALSE for an invalid file or upload. A file object for valid
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* uploads/files.
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*/
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function file_check_upload($source = 'upload') {
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// Cache for uploaded files. Since the data in _FILES is modified
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// by this function, we cache the result.
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static $upload_cache;
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// Test source to see if it is an object.
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if (is_object($source)) {
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// Validate the file path if an object was passed in instead of
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// an upload key.
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if (is_file($source->filepath)) {
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return $source;
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}
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else {
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return FALSE;
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}
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}
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// Return cached objects without processing since the file will have
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// already been processed and the paths in _FILES will be invalid.
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if (isset($upload_cache[$source])) {
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return $upload_cache[$source];
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}
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// If a file was uploaded, process it.
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if ($_FILES["files"]["name"][$source] && is_uploaded_file($_FILES["files"]["tmp_name"][$source])) {
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// Check for file upload errors and return FALSE if a
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// lower level system error occurred.
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switch ($_FILES["files"]["error"][$source]) {
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// @see http://php.net/manual/en/features.file-upload.errors.php
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case UPLOAD_ERR_OK:
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break;
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case UPLOAD_ERR_INI_SIZE:
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case UPLOAD_ERR_FORM_SIZE:
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drupal_set_message(t('The file %file could not be saved, because it exceeds the maximum allowed size for uploads.', array('%file' => $source)), 'error');
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return 0;
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case UPLOAD_ERR_PARTIAL:
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case UPLOAD_ERR_NO_FILE:
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drupal_set_message(t('The file %file could not be saved, because the upload did not complete.', array('%file' => $source)), 'error');
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return 0;
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// Unknown error
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default:
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drupal_set_message(t('The file %file could not be saved. An unknown error has occurred.', array('%file' => $source)),'error');
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return 0;
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}
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// Begin building file object.
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$file = new stdClass();
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$file->filename = trim(basename($_FILES["files"]["name"][$source]), '.');
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// Create temporary name/path for newly uploaded files. On Windows, tempnam()
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// requires an absolute path, so we use realpath().
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$file->filepath = tempnam(realpath(file_directory_temp()), 'tmp_');
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$file->filemime = file_get_mimetype($file->filename);
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// Rename potentially executable files, to help prevent exploits.
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if (preg_match('/\.(php|pl|py|cgi|asp|js)$/i', $file->filename) && (substr($file->filename, -4) != '.txt')) {
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$file->filemime = 'text/plain';
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$file->filepath .= '.txt';
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$file->filename .= '.txt';
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}
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// Move uploaded files from php's upload_tmp_dir to Drupal's file temp.
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// This overcomes open_basedir restrictions for future file operations.
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if (!move_uploaded_file($_FILES["files"]["tmp_name"][$source], $file->filepath)) {
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drupal_set_message(t('File upload error. Could not move uploaded file.'));
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watchdog('file', t('Upload Error. Could not move uploaded file (%file) to destination (%destination).', array('%file' => $_FILES["files"]["tmp_name"][$source], '%destination' => $file->filepath)));
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return FALSE;
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}
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$file->filesize = $_FILES["files"]["size"][$source];
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$file->source = $source;
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// Add processed file to the cache.
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$upload_cache[$source] = $file;
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return $file;
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}
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else {
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// In case of previews return previous file object.
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if (file_exists($_SESSION['file_uploads'][$source]->filepath)) {
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return $_SESSION['file_uploads'][$source];
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}
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}
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// If nothing was done, return FALSE.
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return FALSE;
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}
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/**
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* Check if a file is really located inside $directory. Should be used to make
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* sure a file specified is really located within the directory to prevent
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* exploits.
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*
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* @code
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* // Returns FALSE:
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* file_check_location('/www/example.com/files/../../../etc/passwd', '/www/example.com/files');
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* @endcode
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*
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* @param $source A string set to the file to check.
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* @param $directory A string where the file should be located.
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* @return 0 for invalid path or the real path of the source.
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*/
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function file_check_location($source, $directory = '') {
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$check = realpath($source);
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if ($check) {
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$source = $check;
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}
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else {
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// This file does not yet exist
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$source = realpath(dirname($source)) .'/'. basename($source);
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}
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$directory = realpath($directory);
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if ($directory && strpos($source, $directory) !== 0) {
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return 0;
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}
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return $source;
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}
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/**
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* Copies a file to a new location. This is a powerful function that in many ways
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* performs like an advanced version of copy().
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* - Checks if $source and $dest are valid and readable/writable.
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* - Performs a file copy if $source is not equal to $dest.
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* - If file already exists in $dest either the call will error out, replace the
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* file or rename the file based on the $replace parameter.
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*
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* @param $source A string specifying the file location of the original file.
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* This parameter will contain the resulting destination filename in case of
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* success.
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* @param $dest A string containing the directory $source should be copied to.
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* If this value is omitted, Drupal's 'files' directory will be used.
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* @param $replace Replace behavior when the destination file already exists.
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* - FILE_EXISTS_REPLACE - Replace the existing file
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* - FILE_EXISTS_RENAME - Append _{incrementing number} until the filename is unique
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* - FILE_EXISTS_ERROR - Do nothing and return FALSE.
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* @return True for success, FALSE for failure.
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*/
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function file_copy(&$source, $dest = 0, $replace = FILE_EXISTS_RENAME) {
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$dest = file_create_path($dest);
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$directory = $dest;
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$basename = file_check_path($directory);
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// Make sure we at least have a valid directory.
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if ($basename === FALSE) {
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$source = is_object($source) ? $source->filepath : $source;
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drupal_set_message(t('The selected file %file could not be uploaded, because the destination %directory is not properly configured.', array('%file' => $source, '%directory' => $dest)), 'error');
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watchdog('file system', t('The selected file %file could not be uploaded, because the destination %directory could not be found, or because its permissions do not allow the file to be written.', array('%file' => $source, '%directory' => $dest)), WATCHDOG_ERROR);
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return 0;
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}
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// Process a file upload object.
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if (is_object($source)) {
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$file = $source;
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$source = $file->filepath;
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if (!$basename) {
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$basename = $file->filename;
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}
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}
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$source = realpath($source);
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if (!file_exists($source)) {
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drupal_set_message(t('The selected file %file could not be copied, because no file by that name exists. Please check that you supplied the correct filename.', array('%file' => $source)), 'error');
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return 0;
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}
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// If the destination file is not specified then use the filename of the source file.
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$basename = $basename ? $basename : basename($source);
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$dest = $directory .'/'. $basename;
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// Make sure source and destination filenames are not the same, makes no sense
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// to copy it if they are. In fact copying the file will most likely result in
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// a 0 byte file. Which is bad. Real bad.
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if ($source != realpath($dest)) {
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if (file_exists($dest)) {
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switch ($replace) {
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case FILE_EXISTS_RENAME:
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// Destination file already exists and we can't replace is so we try and
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// and find a new filename.
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if ($pos = strrpos($basename, '.')) {
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$name = substr($basename, 0, $pos);
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$ext = substr($basename, $pos);
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}
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else {
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$name = $basename;
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}
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$counter = 0;
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do {
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$dest = $directory .'/'. $name .'_'. $counter++ . $ext;
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} while (file_exists($dest));
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break;
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case FILE_EXISTS_ERROR:
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drupal_set_message(t('The selected file %file could not be copied, because a file by that name already exists in the destination.', array('%file' => $source)), 'error');
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return 0;
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}
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}
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if (!@copy($source, $dest)) {
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drupal_set_message(t('The selected file %file could not be copied.', array('%file' => $source)), 'error');
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return 0;
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}
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// Give everyone read access so that FTP'd users or
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// non-webserver users can see/read these files.
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@chmod($dest, 0664);
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}
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if (is_object($file)) {
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$file->filename = $basename;
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$file->filepath = $dest;
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$source = $file;
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}
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else {
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$source = $dest;
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}
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return 1; // Everything went ok.
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}
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|
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/**
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* Moves a file to a new location.
|
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* - Checks if $source and $dest are valid and readable/writable.
|
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* - Performs a file move if $source is not equal to $dest.
|
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* - If file already exists in $dest either the call will error out, replace the
|
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* file or rename the file based on the $replace parameter.
|
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*
|
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* @param $source A string specifying the file location of the original file.
|
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* This parameter will contain the resulting destination filename in case of
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* success.
|
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* @param $dest A string containing the directory $source should be copied to.
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* If this value is omitted, Drupal's 'files' directory will be used.
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* @param $replace Replace behavior when the destination file already exists.
|
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* - FILE_EXISTS_REPLACE - Replace the existing file
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|
* - FILE_EXISTS_RENAME - Append _{incrementing number} until the filename is unique
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* - FILE_EXISTS_ERROR - Do nothing and return FALSE.
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* @return True for success, FALSE for failure.
|
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*/
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function file_move(&$source, $dest = 0, $replace = FILE_EXISTS_RENAME) {
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$path_original = is_object($source) ? $source->filepath : $source;
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if (file_copy($source, $dest, $replace)) {
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$path_current = is_object($source) ? $source->filepath : $source;
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if ($path_original == $path_current || file_delete($path_original)) {
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return 1;
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}
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drupal_set_message(t('The removal of the original file %file has failed.', array('%file' => $path_original)), 'error');
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}
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return 0;
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}
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|
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/**
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|
* Create a full file path from a directory and filename. If a file with the
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* specified name already exists, an alternative will be used.
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*
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* @param $basename string filename
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* @param $directory string directory
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* @return
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*/
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function file_create_filename($basename, $directory) {
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$dest = $directory .'/'. $basename;
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|
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if (file_exists($dest)) {
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// Destination file already exists, generate an alternative.
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if ($pos = strrpos($basename, '.')) {
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$name = substr($basename, 0, $pos);
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$ext = substr($basename, $pos);
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}
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else {
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$name = $basename;
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}
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$counter = 0;
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do {
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$dest = $directory .'/'. $name .'_'. $counter++ . $ext;
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} while (file_exists($dest));
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}
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return $dest;
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}
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|
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/**
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* Delete a file.
|
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*
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* @param $path A string containing a file path.
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* @return True for success, FALSE for failure.
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*/
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function file_delete($path) {
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if (is_file($path)) {
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return unlink($path);
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}
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}
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|
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/**
|
|
* Saves a file upload to a new location. The source file is validated as a
|
|
* proper upload and handled as such.
|
|
*
|
|
* @param $source A string specifying the name of the upload field to save.
|
|
* This parameter will contain the resulting destination filename in case of
|
|
* success.
|
|
* @param $dest A string containing the directory $source should be copied to,
|
|
* will use the temporary directory in case no other value is set.
|
|
* @param $replace A boolean, set to TRUE if the destination should be replaced
|
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* when in use, but when FALSE append a _X to the filename.
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* @return An object containing file info or 0 in case of error.
|
|
*/
|
|
function file_save_upload($source, $dest = FALSE, $replace = FILE_EXISTS_RENAME) {
|
|
// Make sure $source exists && is valid.
|
|
if ($file = file_check_upload($source)) {
|
|
|
|
// This should be refactored, file_check_upload has already
|
|
// moved the file to the temporary folder.
|
|
if (!$dest) {
|
|
$dest = file_directory_temp();
|
|
$temporary = 1;
|
|
if (is_file($file->filepath)) {
|
|
// If this file was uploaded by this user before replace the temporary copy.
|
|
$replace = FILE_EXISTS_REPLACE;
|
|
}
|
|
}
|
|
|
|
unset($_SESSION['file_uploads'][is_object($source) ? $source->source : $source]);
|
|
if (file_move($file, $dest, $replace)) {
|
|
if ($temporary) {
|
|
$_SESSION['file_uploads'][is_object($source) ? $source->source : $source] = $file;
|
|
}
|
|
return $file;
|
|
}
|
|
return 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Save a string to the specified destination.
|
|
*
|
|
* @param $data A string containing the contents of the file.
|
|
* @param $dest A string containing the destination location.
|
|
* @param $replace Replace behavior when the destination file already exists.
|
|
* - FILE_EXISTS_REPLACE - Replace the existing file
|
|
* - FILE_EXISTS_RENAME - Append _{incrementing number} until the filename is unique
|
|
* - FILE_EXISTS_ERROR - Do nothing and return FALSE.
|
|
*
|
|
* @return A string containing the resulting filename or 0 on error
|
|
*/
|
|
function file_save_data($data, $dest, $replace = FILE_EXISTS_RENAME) {
|
|
$temp = file_directory_temp();
|
|
// On Windows, tempnam() requires an absolute path, so we use realpath().
|
|
$file = tempnam(realpath($temp), 'file');
|
|
if (!$fp = fopen($file, 'wb')) {
|
|
drupal_set_message(t('The file could not be created.'), 'error');
|
|
return 0;
|
|
}
|
|
fwrite($fp, $data);
|
|
fclose($fp);
|
|
|
|
if (!file_move($file, $dest, $replace)) {
|
|
return 0;
|
|
}
|
|
|
|
return $file;
|
|
}
|
|
|
|
/**
|
|
* Transfer file using http to client. Pipes a file through Drupal to the
|
|
* client.
|
|
*
|
|
* @param $source File to transfer.
|
|
* @param $headers An array of http headers to send along with file.
|
|
*/
|
|
function file_transfer($source, $headers) {
|
|
ob_end_clean();
|
|
|
|
foreach ($headers as $header) {
|
|
// To prevent HTTP header injection, we delete new lines that are
|
|
// not followed by a space or a tab.
|
|
// See http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2
|
|
$header = preg_replace('/\r?\n(?!\t| )/', '', $header);
|
|
drupal_set_header($header);
|
|
}
|
|
|
|
$source = file_create_path($source);
|
|
|
|
// Transfer file in 1024 byte chunks to save memory usage.
|
|
if ($fd = fopen($source, 'rb')) {
|
|
while (!feof($fd)) {
|
|
print fread($fd, 1024);
|
|
}
|
|
fclose($fd);
|
|
}
|
|
else {
|
|
drupal_not_found();
|
|
}
|
|
exit();
|
|
}
|
|
|
|
/**
|
|
* Call modules that implement hook_file_download() to find out if a file is
|
|
* accessible and what headers it should be transferred with. If a module
|
|
* returns -1 drupal_access_denied() will be returned. If one or more modules
|
|
* returned headers the download will start with the returned headers. If no
|
|
* modules respond drupal_not_found() will be returned.
|
|
*/
|
|
|
|
function file_download() {
|
|
// Merge remainder of arguments from GET['q'], into relative file path.
|
|
$args = func_get_args();
|
|
$filepath = implode('/', $args);
|
|
|
|
// Maintain compatibility with old ?file=paths saved in node bodies.
|
|
if (isset($_GET['file'])) {
|
|
$filepath = $_GET['file'];
|
|
}
|
|
|
|
if (file_exists(file_create_path($filepath))) {
|
|
$headers = module_invoke_all('file_download', $filepath);
|
|
if (in_array(-1, $headers)) {
|
|
return drupal_access_denied();
|
|
}
|
|
if (count($headers)) {
|
|
file_transfer($filepath, $headers);
|
|
}
|
|
}
|
|
return drupal_not_found();
|
|
}
|
|
|
|
|
|
/**
|
|
* Finds all files that match a given mask in a given directory.
|
|
* Directories and files beginning with a period are excluded; this
|
|
* prevents hidden files and directories (such as SVN working directories)
|
|
* from being scanned.
|
|
*
|
|
* @param $dir
|
|
* The base directory for the scan.
|
|
* @param $mask
|
|
* The regular expression of the files to find.
|
|
* @param $nomask
|
|
* An array of files/directories to ignore.
|
|
* @param $callback
|
|
* The callback function to call for each match.
|
|
* @param $recurse
|
|
* When TRUE, the directory scan will recurse the entire tree
|
|
* starting at the provided directory.
|
|
* @param $key
|
|
* The key to be used for the returned array of files. Possible
|
|
* values are "filename", for the path starting with $dir,
|
|
* "basename", for the basename of the file, and "name" for the name
|
|
* of the file without an extension.
|
|
* @param $min_depth
|
|
* Minimum depth of directories to return files from.
|
|
* @param $depth
|
|
* Current depth of recursion. This parameter is only used internally and should not be passed.
|
|
*
|
|
* @return
|
|
* An associative array (keyed on the provided key) of objects with
|
|
* "path", "basename", and "name" members corresponding to the
|
|
* matching files.
|
|
*/
|
|
function file_scan_directory($dir, $mask, $nomask = array('.', '..', 'CVS'), $callback = 0, $recurse = TRUE, $key = 'filename', $min_depth = 0, $depth = 0) {
|
|
$key = (in_array($key, array('filename', 'basename', 'name')) ? $key : 'filename');
|
|
$files = array();
|
|
|
|
if (is_dir($dir) && $handle = opendir($dir)) {
|
|
while (FALSE !== ($file = readdir($handle))) {
|
|
if (!in_array($file, $nomask) && $file[0] != '.') {
|
|
if (is_dir("$dir/$file") && $recurse) {
|
|
$files = array_merge($files, file_scan_directory("$dir/$file", $mask, $nomask, $callback, $recurse, $key, $min_depth, $depth + 1));
|
|
}
|
|
elseif ($depth >= $min_depth && ereg($mask, $file)) {
|
|
$filename = "$dir/$file";
|
|
$basename = basename($file);
|
|
$name = substr($basename, 0, strrpos($basename, '.'));
|
|
$files[$$key] = new stdClass();
|
|
$files[$$key]->filename = $filename;
|
|
$files[$$key]->basename = $basename;
|
|
$files[$$key]->name = $name;
|
|
if ($callback) {
|
|
$callback($filename);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
closedir($handle);
|
|
}
|
|
|
|
return $files;
|
|
}
|
|
|
|
/**
|
|
* Determine the default temporary directory.
|
|
*
|
|
* @return A string containing a temp directory.
|
|
*/
|
|
function file_directory_temp() {
|
|
$temporary_directory = variable_get('file_directory_temp', NULL);
|
|
|
|
if (is_null($temporary_directory)) {
|
|
$directories = array();
|
|
|
|
// Has PHP been set with an upload_tmp_dir?
|
|
if (ini_get('upload_tmp_dir')) {
|
|
$directories[] = ini_get('upload_tmp_dir');
|
|
}
|
|
|
|
// Operating system specific dirs.
|
|
if (substr(PHP_OS, 0, 3) == 'WIN') {
|
|
$directories[] = 'c:\\windows\\temp';
|
|
$directories[] = 'c:\\winnt\\temp';
|
|
$path_delimiter = '\\';
|
|
}
|
|
else {
|
|
$directories[] = '/tmp';
|
|
$path_delimiter = '/';
|
|
}
|
|
|
|
foreach ($directories as $directory) {
|
|
if (!$temporary_directory && is_dir($directory)) {
|
|
$temporary_directory = $directory;
|
|
}
|
|
}
|
|
|
|
// if a directory has been found, use it, otherwise default to 'files/tmp' or 'files\\tmp';
|
|
$temporary_directory = $temporary_directory ? $temporary_directory : file_directory_path() . $path_delimiter . 'tmp';
|
|
variable_set('file_directory_temp', $temporary_directory);
|
|
}
|
|
|
|
return $temporary_directory;
|
|
}
|
|
|
|
/**
|
|
* Determine the default 'files' directory.
|
|
*
|
|
* @return A string containing the path to Drupal's 'files' directory.
|
|
*/
|
|
function file_directory_path() {
|
|
return variable_get('file_directory_path', 'files');
|
|
}
|
|
|
|
/**
|
|
* Determine the maximum file upload size by querying the PHP settings.
|
|
*
|
|
* @return
|
|
* A file size limit in bytes based on the PHP upload_max_filesize and post_max_size
|
|
*/
|
|
function file_upload_max_size() {
|
|
static $max_size = -1;
|
|
|
|
if ($max_size < 0) {
|
|
$upload_max = parse_size(ini_get('upload_max_filesize'));
|
|
$post_max = parse_size(ini_get('post_max_size'));
|
|
$max_size = ($upload_max < $post_max) ? $upload_max : $post_max;
|
|
}
|
|
return $max_size;
|
|
}
|
|
|
|
/**
|
|
* Determine an Internet Media Type, or MIME type from a filename.
|
|
*
|
|
* @param $filename
|
|
* Name of the file, including extension.
|
|
* @param $mapping
|
|
* An optional array of extension to media type mappings in the form
|
|
* 'extension1|extension2|...' => 'type'.
|
|
*
|
|
* @return
|
|
* The internet media type registered for the extension or application/octet-stream for unknown extensions.
|
|
*/
|
|
function file_get_mimetype($filename, $mapping = NULL) {
|
|
if (!is_array($mapping)) {
|
|
$mapping = variable_get('mime_extension_mapping', array(
|
|
'ez' => 'application/andrew-inset',
|
|
'atom' => 'application/atom',
|
|
'atomcat' => 'application/atomcat+xml',
|
|
'atomsrv' => 'application/atomserv+xml',
|
|
'cap|pcap' => 'application/cap',
|
|
'cu' => 'application/cu-seeme',
|
|
'tsp' => 'application/dsptype',
|
|
'spl' => 'application/x-futuresplash',
|
|
'hta' => 'application/hta',
|
|
'jar' => 'application/java-archive',
|
|
'ser' => 'application/java-serialized-object',
|
|
'class' => 'application/java-vm',
|
|
'hqx' => 'application/mac-binhex40',
|
|
'cpt' => 'image/x-corelphotopaint',
|
|
'nb' => 'application/mathematica',
|
|
'mdb' => 'application/msaccess',
|
|
'doc|dot' => 'application/msword',
|
|
'bin' => 'application/octet-stream',
|
|
'oda' => 'application/oda',
|
|
'ogg|ogx' => 'application/ogg',
|
|
'pdf' => 'application/pdf',
|
|
'key' => 'application/pgp-keys',
|
|
'pgp' => 'application/pgp-signature',
|
|
'prf' => 'application/pics-rules',
|
|
'ps|ai|eps' => 'application/postscript',
|
|
'rar' => 'application/rar',
|
|
'rdf' => 'application/rdf+xml',
|
|
'rss' => 'application/rss+xml',
|
|
'rtf' => 'application/rtf',
|
|
'smi|smil' => 'application/smil',
|
|
'wpd' => 'application/wordperfect',
|
|
'wp5' => 'application/wordperfect5.1',
|
|
'xhtml|xht' => 'application/xhtml+xml',
|
|
'xml|xsl' => 'application/xml',
|
|
'zip' => 'application/zip',
|
|
'cdy' => 'application/vnd.cinderella',
|
|
'kml' => 'application/vnd.google-earth.kml+xml',
|
|
'kmz' => 'application/vnd.google-earth.kmz',
|
|
'xul' => 'application/vnd.mozilla.xul+xml',
|
|
'xls|xlb|xlt' => 'application/vnd.ms-excel',
|
|
'cat' => 'application/vnd.ms-pki.seccat',
|
|
'stl' => 'application/vnd.ms-pki.stl',
|
|
'ppt|pps' => 'application/vnd.ms-powerpoint',
|
|
'odc' => 'application/vnd.oasis.opendocument.chart',
|
|
'odb' => 'application/vnd.oasis.opendocument.database',
|
|
'odf' => 'application/vnd.oasis.opendocument.formula',
|
|
'odg' => 'application/vnd.oasis.opendocument.graphics',
|
|
'otg' => 'application/vnd.oasis.opendocument.graphics-template',
|
|
'odi' => 'application/vnd.oasis.opendocument.image',
|
|
'odp' => 'application/vnd.oasis.opendocument.presentation',
|
|
'otp' => 'application/vnd.oasis.opendocument.presentation-template',
|
|
'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
|
|
'ots' => 'application/vnd.oasis.opendocument.spreadsheet-template',
|
|
'odt' => 'application/vnd.oasis.opendocument.text',
|
|
'odm' => 'application/vnd.oasis.opendocument.text-master',
|
|
'ott' => 'application/vnd.oasis.opendocument.text-template',
|
|
'oth' => 'application/vnd.oasis.opendocument.text-web',
|
|
'docm' => 'application/vnd.ms-word.document.macroEnabled.12',
|
|
'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
|
|
'dotm' => 'application/vnd.ms-word.template.macroEnabled.12',
|
|
'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
|
|
'potm' => 'application/vnd.ms-powerpoint.template.macroEnabled.12',
|
|
'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
|
|
'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',
|
|
'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12',
|
|
'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',
|
|
'cod' => 'application/vnd.rim.cod',
|
|
'mmf' => 'application/vnd.smaf',
|
|
'sdc' => 'application/vnd.stardivision.calc',
|
|
'sds' => 'application/vnd.stardivision.chart',
|
|
'sda' => 'application/vnd.stardivision.draw',
|
|
'sdd' => 'application/vnd.stardivision.impress',
|
|
'sdf' => 'application/vnd.stardivision.math',
|
|
'sdw' => 'application/vnd.stardivision.writer',
|
|
'sgl' => 'application/vnd.stardivision.writer-global',
|
|
'sxc' => 'application/vnd.sun.xml.calc',
|
|
'stc' => 'application/vnd.sun.xml.calc.template',
|
|
'sxd' => 'application/vnd.sun.xml.draw',
|
|
'std' => 'application/vnd.sun.xml.draw.template',
|
|
'sxi' => 'application/vnd.sun.xml.impress',
|
|
'sti' => 'application/vnd.sun.xml.impress.template',
|
|
'sxm' => 'application/vnd.sun.xml.math',
|
|
'sxw' => 'application/vnd.sun.xml.writer',
|
|
'sxg' => 'application/vnd.sun.xml.writer.global',
|
|
'stw' => 'application/vnd.sun.xml.writer.template',
|
|
'sis' => 'application/vnd.symbian.install',
|
|
'vsd' => 'application/vnd.visio',
|
|
'wbxml' => 'application/vnd.wap.wbxml',
|
|
'wmlc' => 'application/vnd.wap.wmlc',
|
|
'wmlsc' => 'application/vnd.wap.wmlscriptc',
|
|
'wk' => 'application/x-123',
|
|
'7z' => 'application/x-7z-compressed',
|
|
'abw' => 'application/x-abiword',
|
|
'dmg' => 'application/x-apple-diskimage',
|
|
'bcpio' => 'application/x-bcpio',
|
|
'torrent' => 'application/x-bittorrent',
|
|
'cab' => 'application/x-cab',
|
|
'cbr' => 'application/x-cbr',
|
|
'cbz' => 'application/x-cbz',
|
|
'cdf' => 'application/x-cdf',
|
|
'vcd' => 'application/x-cdlink',
|
|
'pgn' => 'application/x-chess-pgn',
|
|
'cpio' => 'application/x-cpio',
|
|
'csh' => 'text/x-csh',
|
|
'deb|udeb' => 'application/x-debian-package',
|
|
'dcr|dir|dxr' => 'application/x-director',
|
|
'dms' => 'application/x-dms',
|
|
'wad' => 'application/x-doom',
|
|
'dvi' => 'application/x-dvi',
|
|
'rhtml' => 'application/x-httpd-eruby',
|
|
'flac' => 'application/x-flac',
|
|
'pfa|pfb|gsf|pcf|pcf.Z' => 'application/x-font',
|
|
'mm' => 'application/x-freemind',
|
|
'gnumeric' => 'application/x-gnumeric',
|
|
'sgf' => 'application/x-go-sgf',
|
|
'gcf' => 'application/x-graphing-calculator',
|
|
'gtar|tgz|taz' => 'application/x-gtar',
|
|
'hdf' => 'application/x-hdf',
|
|
'phtml|pht|php' => 'application/x-httpd-php',
|
|
'phps' => 'application/x-httpd-php-source',
|
|
'php3' => 'application/x-httpd-php3',
|
|
'php3p' => 'application/x-httpd-php3-preprocessed',
|
|
'php4' => 'application/x-httpd-php4',
|
|
'ica' => 'application/x-ica',
|
|
'ins|isp' => 'application/x-internet-signup',
|
|
'iii' => 'application/x-iphone',
|
|
'iso' => 'application/x-iso9660-image',
|
|
'jnlp' => 'application/x-java-jnlp-file',
|
|
'js' => 'application/x-javascript',
|
|
'jmz' => 'application/x-jmol',
|
|
'chrt' => 'application/x-kchart',
|
|
'kil' => 'application/x-killustrator',
|
|
'skp|skd|skt|skm' => 'application/x-koan',
|
|
'kpr|kpt' => 'application/x-kpresenter',
|
|
'ksp' => 'application/x-kspread',
|
|
'kwd|kwt' => 'application/x-kword',
|
|
'latex' => 'application/x-latex',
|
|
'lha' => 'application/x-lha',
|
|
'lyx' => 'application/x-lyx',
|
|
'lzh' => 'application/x-lzh',
|
|
'lzx' => 'application/x-lzx',
|
|
'frm|maker|frame|fm|fb|book|fbdoc' => 'application/x-maker',
|
|
'mif' => 'application/x-mif',
|
|
'wmd' => 'application/x-ms-wmd',
|
|
'wmz' => 'application/x-ms-wmz',
|
|
'com|exe|bat|dll' => 'application/x-msdos-program',
|
|
'msi' => 'application/x-msi',
|
|
'nc' => 'application/x-netcdf',
|
|
'pac' => 'application/x-ns-proxy-autoconfig',
|
|
'nwc' => 'application/x-nwc',
|
|
'o' => 'application/x-object',
|
|
'oza' => 'application/x-oz-application',
|
|
'p7r' => 'application/x-pkcs7-certreqresp',
|
|
'crl' => 'application/x-pkcs7-crl',
|
|
'pyc|pyo' => 'application/x-python-code',
|
|
'qtl' => 'application/x-quicktimeplayer',
|
|
'rpm' => 'application/x-redhat-package-manager',
|
|
'sh' => 'text/x-sh',
|
|
'shar' => 'application/x-shar',
|
|
'swf|swfl' => 'application/x-shockwave-flash',
|
|
'sit|sitx' => 'application/x-stuffit',
|
|
'sv4cpio' => 'application/x-sv4cpio',
|
|
'sv4crc' => 'application/x-sv4crc',
|
|
'tar' => 'application/x-tar',
|
|
'tcl' => 'application/x-tcl',
|
|
'gf' => 'application/x-tex-gf',
|
|
'pk' => 'application/x-tex-pk',
|
|
'texinfo|texi' => 'application/x-texinfo',
|
|
'~|%|bak|old|sik' => 'application/x-trash',
|
|
't|tr|roff' => 'application/x-troff',
|
|
'man' => 'application/x-troff-man',
|
|
'me' => 'application/x-troff-me',
|
|
'ms' => 'application/x-troff-ms',
|
|
'ustar' => 'application/x-ustar',
|
|
'src' => 'application/x-wais-source',
|
|
'wz' => 'application/x-wingz',
|
|
'crt' => 'application/x-x509-ca-cert',
|
|
'xcf' => 'application/x-xcf',
|
|
'fig' => 'application/x-xfig',
|
|
'xpi' => 'application/x-xpinstall',
|
|
'au|snd' => 'audio/basic',
|
|
'mid|midi|kar' => 'audio/midi',
|
|
'mpga|mpega|mp2|mp3|m4a' => 'audio/mpeg',
|
|
'm3u' => 'audio/x-mpegurl',
|
|
'oga|spx' => 'audio/ogg',
|
|
'sid' => 'audio/prs.sid',
|
|
'aif|aiff|aifc' => 'audio/x-aiff',
|
|
'gsm' => 'audio/x-gsm',
|
|
'wma' => 'audio/x-ms-wma',
|
|
'wax' => 'audio/x-ms-wax',
|
|
'ra|rm|ram' => 'audio/x-pn-realaudio',
|
|
'ra' => 'audio/x-realaudio',
|
|
'pls' => 'audio/x-scpls',
|
|
'sd2' => 'audio/x-sd2',
|
|
'wav' => 'audio/x-wav',
|
|
'alc' => 'chemical/x-alchemy',
|
|
'cac|cache' => 'chemical/x-cache',
|
|
'csf' => 'chemical/x-cache-csf',
|
|
'cbin|cascii|ctab' => 'chemical/x-cactvs-binary',
|
|
'cdx' => 'chemical/x-cdx',
|
|
'cer' => 'chemical/x-cerius',
|
|
'c3d' => 'chemical/x-chem3d',
|
|
'chm' => 'chemical/x-chemdraw',
|
|
'cif' => 'chemical/x-cif',
|
|
'cmdf' => 'chemical/x-cmdf',
|
|
'cml' => 'chemical/x-cml',
|
|
'cpa' => 'chemical/x-compass',
|
|
'bsd' => 'chemical/x-crossfire',
|
|
'csml|csm' => 'chemical/x-csml',
|
|
'ctx' => 'chemical/x-ctx',
|
|
'cxf|cef' => 'chemical/x-cxf',
|
|
'emb|embl' => 'chemical/x-embl-dl-nucleotide',
|
|
'spc' => 'chemical/x-galactic-spc',
|
|
'inp|gam|gamin' => 'chemical/x-gamess-input',
|
|
'fch|fchk' => 'chemical/x-gaussian-checkpoint',
|
|
'cub' => 'chemical/x-gaussian-cube',
|
|
'gau|gjc|gjf' => 'chemical/x-gaussian-input',
|
|
'gal' => 'chemical/x-gaussian-log',
|
|
'gcg' => 'chemical/x-gcg8-sequence',
|
|
'gen' => 'chemical/x-genbank',
|
|
'hin' => 'chemical/x-hin',
|
|
'istr|ist' => 'chemical/x-isostar',
|
|
'jdx|dx' => 'chemical/x-jcamp-dx',
|
|
'kin' => 'chemical/x-kinemage',
|
|
'mcm' => 'chemical/x-macmolecule',
|
|
'mmd|mmod' => 'chemical/x-macromodel-input',
|
|
'mol' => 'chemical/x-mdl-molfile',
|
|
'rd' => 'chemical/x-mdl-rdfile',
|
|
'rxn' => 'chemical/x-mdl-rxnfile',
|
|
'sd|sdf' => 'chemical/x-mdl-sdfile',
|
|
'tgf' => 'chemical/x-mdl-tgf',
|
|
'mcif' => 'chemical/x-mmcif',
|
|
'mol2' => 'chemical/x-mol2',
|
|
'b' => 'chemical/x-molconn-Z',
|
|
'gpt' => 'chemical/x-mopac-graph',
|
|
'mop|mopcrt|mpc|dat|zmt' => 'chemical/x-mopac-input',
|
|
'moo' => 'chemical/x-mopac-out',
|
|
'mvb' => 'chemical/x-mopac-vib',
|
|
'asn' => 'chemical/x-ncbi-asn1-spec',
|
|
'prt|ent' => 'chemical/x-ncbi-asn1-ascii',
|
|
'val|aso' => 'chemical/x-ncbi-asn1-binary',
|
|
'pdb|ent' => 'chemical/x-pdb',
|
|
'ros' => 'chemical/x-rosdal',
|
|
'sw' => 'chemical/x-swissprot',
|
|
'vms' => 'chemical/x-vamas-iso14976',
|
|
'vmd' => 'chemical/x-vmd',
|
|
'xtel' => 'chemical/x-xtel',
|
|
'xyz' => 'chemical/x-xyz',
|
|
'gif' => 'image/gif',
|
|
'ief' => 'image/ief',
|
|
'jpeg|jpg|jpe' => 'image/jpeg',
|
|
'pcx' => 'image/pcx',
|
|
'png' => 'image/png',
|
|
'svg|svgz' => 'image/svg+xml',
|
|
'tiff|tif' => 'image/tiff',
|
|
'djvu|djv' => 'image/vnd.djvu',
|
|
'wbmp' => 'image/vnd.wap.wbmp',
|
|
'ras' => 'image/x-cmu-raster',
|
|
'cdr' => 'image/x-coreldraw',
|
|
'pat' => 'image/x-coreldrawpattern',
|
|
'cdt' => 'image/x-coreldrawtemplate',
|
|
'ico' => 'image/x-icon',
|
|
'art' => 'image/x-jg',
|
|
'jng' => 'image/x-jng',
|
|
'bmp' => 'image/x-ms-bmp',
|
|
'psd' => 'image/x-photoshop',
|
|
'pnm' => 'image/x-portable-anymap',
|
|
'pbm' => 'image/x-portable-bitmap',
|
|
'pgm' => 'image/x-portable-graymap',
|
|
'ppm' => 'image/x-portable-pixmap',
|
|
'rgb' => 'image/x-rgb',
|
|
'xbm' => 'image/x-xbitmap',
|
|
'xpm' => 'image/x-xpixmap',
|
|
'xwd' => 'image/x-xwindowdump',
|
|
'eml' => 'message/rfc822',
|
|
'igs|iges' => 'model/iges',
|
|
'msh|mesh|silo' => 'model/mesh',
|
|
'wrl|vrml' => 'model/vrml',
|
|
'ics|icz' => 'text/calendar',
|
|
'css' => 'text/css',
|
|
'csv' => 'text/csv',
|
|
'323' => 'text/h323',
|
|
'html|htm|shtml' => 'text/html',
|
|
'uls' => 'text/iuls',
|
|
'mml' => 'text/mathml',
|
|
'asc|txt|text|pot' => 'text/plain',
|
|
'rtx' => 'text/richtext',
|
|
'sct|wsc' => 'text/scriptlet',
|
|
'tm|ts' => 'text/texmacs',
|
|
'tsv' => 'text/tab-separated-values',
|
|
'jad' => 'text/vnd.sun.j2me.app-descriptor',
|
|
'wml' => 'text/vnd.wap.wml',
|
|
'wmls' => 'text/vnd.wap.wmlscript',
|
|
'bib' => 'text/x-bibtex',
|
|
'boo' => 'text/x-boo',
|
|
'h++|hpp|hxx|hh' => 'text/x-c++hdr',
|
|
'c++|cpp|cxx|cc' => 'text/x-c++src',
|
|
'h' => 'text/x-chdr',
|
|
'htc' => 'text/x-component',
|
|
'c' => 'text/x-csrc',
|
|
'd' => 'text/x-dsrc',
|
|
'diff|patch' => 'text/x-diff',
|
|
'hs' => 'text/x-haskell',
|
|
'java' => 'text/x-java',
|
|
'lhs' => 'text/x-literate-haskell',
|
|
'moc' => 'text/x-moc',
|
|
'p|pas' => 'text/x-pascal',
|
|
'gcd' => 'text/x-pcs-gcd',
|
|
'pl|pm' => 'text/x-perl',
|
|
'py' => 'text/x-python',
|
|
'etx' => 'text/x-setext',
|
|
'tcl|tk' => 'text/x-tcl',
|
|
'tex|ltx|sty|cls' => 'text/x-tex',
|
|
'vcs' => 'text/x-vcalendar',
|
|
'vcf' => 'text/x-vcard',
|
|
'3gp' => 'video/3gpp',
|
|
'dl' => 'video/dl',
|
|
'dif|dv' => 'video/dv',
|
|
'fli' => 'video/fli',
|
|
'gl' => 'video/gl',
|
|
'mpeg|mpg|mpe' => 'video/mpeg',
|
|
'mp4' => 'video/mp4',
|
|
'ogv' => 'video/ogg',
|
|
'qt|mov' => 'video/quicktime',
|
|
'mxu' => 'video/vnd.mpegurl',
|
|
'lsf|lsx' => 'video/x-la-asf',
|
|
'mng' => 'video/x-mng',
|
|
'asf|asx' => 'video/x-ms-asf',
|
|
'wm' => 'video/x-ms-wm',
|
|
'wmv' => 'video/x-ms-wmv',
|
|
'wmx' => 'video/x-ms-wmx',
|
|
'wvx' => 'video/x-ms-wvx',
|
|
'avi' => 'video/x-msvideo',
|
|
'movie' => 'video/x-sgi-movie',
|
|
'ice' => 'x-conference/x-cooltalk',
|
|
'sisx' => 'x-epoc/x-sisx-app',
|
|
'vrm|vrml|wrl' => 'x-world/x-vrml',
|
|
'xps' => 'application/vnd.ms-xpsdocument',
|
|
));
|
|
}
|
|
foreach ($mapping as $ext_preg => $mime_match) {
|
|
if (preg_match('!\.('. $ext_preg .')$!i', $filename)) {
|
|
return $mime_match;
|
|
}
|
|
}
|
|
|
|
return 'application/octet-stream';
|
|
}
|