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file.inc 66.11 KiB
<?php
// $Id$
/**
* @file
* API for handling file uploads and server file management.
*/
/**
* @defgroup file File interface
* @{
* Common file handling functions.
*
* Fields on the file object:
* - fid - File ID
* - uid - The {users}.uid of the user who is associated with the file.
* - filename - Name of the file with no path components. This may differ from
* the basename of the filepath if the file is renamed to avoid overwriting
* an existing file.
* - filepath - Path of the file relative to Drupal root.
* - filemime - The file's MIME type.
* - filesize - The size of the file in bytes.
* - status - A bitmapped field indicating the status of the file. The first 8
* bits are reserved for Drupal core. The least sigifigant bit indicates
* temporary (0) or permanent (1). Temporary files older than
* DRUPAL_MAXIMUM_TEMP_FILE_AGE will be removed during cron runs.
* - timestamp - UNIX timestamp for the date the file was added to the database.
*/
/**
* Flag to indicate that the 'public' file download method is enabled.
*
* When using this method, files are available from a regular HTTP request,
* which provides no additional access restrictions.
*/
define('FILE_DOWNLOADS_PUBLIC', 1);
/**
* Flag to indicate that the 'private' file download method is enabled.
*
* When using this method, all file requests are served by Drupal, during which
* access-control checking can be performed.
*/
define('FILE_DOWNLOADS_PRIVATE', 2);
/**
* Flag used by file_check_directory() -- create directory if not present.
*/
define('FILE_CREATE_DIRECTORY', 1);
/**
* Flag used by file_check_directory() -- file permissions may be changed.
*/
define('FILE_MODIFY_PERMISSIONS', 2);
/**
* Flag for dealing with existing files: Appends number until name is unique.
*/
define('FILE_EXISTS_RENAME', 0);
/**
* Flag for dealing with existing files: Replace the existing file.
*/
define('FILE_EXISTS_REPLACE', 1);
/**
* Flag for dealing with existing files: Do nothing and return FALSE.
*/
define('FILE_EXISTS_ERROR', 2);
/**
* File status -- This bit in the status indicates that the file is permanent
* and should not be deleted during file garbage collection process. Temporary
* files older than DRUPAL_MAXIMUM_TEMP_FILE_AGE will be removed during cron
* runs.
*/
define('FILE_STATUS_PERMANENT', 1);
/**
* Create the download path to a file.
*
* @param $path A string containing the path of the file to generate URL for.
* @return A string containing a URL that can be used to download the file.
*/
function file_create_url($path) {
// Strip file_directory_path from $path. We only include relative paths in
// URLs.
if (strpos($path, file_directory_path() . '/') === 0) {
$path = trim(substr($path, strlen(file_directory_path())), '\\/');
}
switch (variable_get('file_downloads', FILE_DOWNLOADS_PUBLIC)) {
case FILE_DOWNLOADS_PUBLIC:
return $GLOBALS['base_url'] . '/' . file_directory_path() . '/' . str_replace('\\', '/', $path);
case FILE_DOWNLOADS_PRIVATE:
return url('system/files/' . $path, array('absolute' => TRUE));
}
}
/**
* Make sure the destination is a complete path and resides in the file system
* directory, if it is not prepend the file system directory.
*
* @param $destination
* A string containing the path to verify. If this value is omitted, Drupal's
* 'files' directory will be used.
* @return
* A string containing the path to file, with file system directory appended
* if necessary, or FALSE if the path is invalid (i.e. outside the configured
* 'files' or temp directories).
*/
function file_create_path($destination = NULL) {
$file_path = file_directory_path();
if (is_null($destination)) {
return $file_path;
}
// file_check_location() checks whether the destination is inside the Drupal
// files directory.
if (file_check_location($destination, $file_path)) {
return $destination;
}
// Check if the destination is instead inside the Drupal temporary files
// directory.
elseif (file_check_location($destination, file_directory_temp())) {
return $destination;
}
// Not found, try again with prefixed directory path.
elseif (file_check_location($file_path . '/' . $destination, $file_path)) {
return $file_path . '/' . $destination;
}
// File not found.
return FALSE;
}
/**
* Check that the directory exists and is writable.
*
* Directories need to have execute permissions to be considered a directory by
* FTP servers, etc.
*
* @param $directory * A string containing the name of a directory path.
* @param $mode
* A bitmask to indicate if the directory should be created if it does
* not exist (FILE_CREATE_DIRECTORY) or made writable if it is read-only
* (FILE_MODIFY_PERMISSIONS).
* @param $form_item
* An optional string containing the name of a form item that any errors will
* be attached to. This is useful for settings forms that require the user to
* specify a writable directory. If it can't be made to work, a form error
* will be set preventing them from saving the settings.
* @return
* FALSE when directory not found, or TRUE when directory exists.
*/
function file_check_directory(&$directory, $mode = 0, $form_item = NULL) {
$directory = rtrim($directory, '/\\');
// Check if directory exists.
if (!is_dir($directory)) {
if (($mode & FILE_CREATE_DIRECTORY) && @mkdir($directory)) {
@chmod($directory, 0775); // Necessary for non-webserver users.
}
else {
if ($form_item) {
form_set_error($form_item, t('The directory %directory does not exist.', array('%directory' => $directory)));
watchdog('file system', 'The directory %directory does not exist.', array('%directory' => $directory), WATCHDOG_ERROR);
}
return FALSE;
}
}
// Check to see if the directory is writable.
if (!is_writable($directory)) {
// If not able to modify permissions, or if able to, but chmod
// fails, return false.
if (!$mode || (($mode & FILE_MODIFY_PERMISSIONS) && !@chmod($directory, 0775))) {
if ($form_item) {
form_set_error($form_item, t('The directory %directory is not writable', array('%directory' => $directory)));
watchdog('file system', 'The directory %directory is not writable, because it does not have the correct permissions set.', array('%directory' => $directory), WATCHDOG_ERROR);
}
return FALSE;
}
}
if ((file_directory_path() == $directory || file_directory_temp() == $directory) && !is_file("$directory/.htaccess")) {
$htaccess_lines = "SetHandler Drupal_Security_Do_Not_Remove_See_SA_2006_006\nOptions None\nOptions +FollowSymLinks";
if (($fp = fopen("$directory/.htaccess", 'w')) && fputs($fp, $htaccess_lines)) {
fclose($fp);
chmod($directory . '/.htaccess', 0664);
}
else {
$variables = array('%directory' => $directory, '!htaccess' => '<br />' . nl2br(check_plain($htaccess_lines)));
form_set_error($form_item, 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>", $variables));
watchdog('security', "Security warning: Couldn't write .htaccess file. Please create a .htaccess file in your %directory directory which contains the following lines: <code>!htaccess</code>", $variables, WATCHDOG_ERROR);
}
}
return TRUE;
}
/**
* Checks path to see if it is a directory, or a directory/file.
*
* @param $path
* A string containing a file path. This will be set to the directory's path.
* @return
* If the directory is not in a Drupal writable directory, FALSE is returned.
* Otherwise, the base name of the path is returned.
*/
function file_check_path(&$path) {
// Check if path is a directory. if (file_check_directory($path)) {
return '';
}
// Check if path is a possible dir/file.
$filename = basename($path);
$path = dirname($path);
if (file_check_directory($path)) {
return $filename;
}
return FALSE;
}
/**
* Check if a file is really located inside $directory.
*
* This should be used to make sure a file specified is really located within
* the directory to prevent exploits. Note that the file or path being checked
* does not actually need to exist yet.
*
* @code
* // Returns FALSE:
* file_check_location('/www/example.com/files/../../../etc/passwd', '/www/example.com/files');
* @endcode
*
* @param $source
* A string set to the file to check.
* @param $directory
* A string where the file should be located.
* @return
* FALSE if the path does not exist in the directory; otherwise, the real
* path of the source.
*/
function file_check_location($source, $directory = '') {
$check = realpath($source);
if ($check) {
$source = $check;
}
else {
// This file does not yet exist.
$source = realpath(dirname($source)) . '/' . basename($source);
}
$directory = realpath($directory);
if ($directory && strpos($source, $directory) !== 0) {
return FALSE;
}
return $source;
}
/**
* Load file objects from the database.
*
* @param $fids
* An array of file IDs.
* @param $conditions
* An array of conditions to match against the {files} table. These
* should be supplied in the form array('field_name' => 'field_value').
* @return
* An array of file objects, indexed by fid.
*
* @see hook_file_load()
* @see file_load()
*/
function file_load_multiple($fids = array(), $conditions = array()) {
$query = db_select('files', 'f')->fields('f');
// If the $fids array is populated, add those to the query.
if ($fids) {
$query->condition('f.fid', $fids, 'IN'); }
// If the conditions array is populated, add those to the query.
if ($conditions) {
foreach ($conditions as $field => $value) {
$query->condition('f.' . $field, $value);
}
}
$files = $query->execute()->fetchAllAssoc('fid');
// Invoke hook_file_load() on the terms loaded from the database
// and add them to the static cache.
if (!empty($files)) {
foreach (module_implements('file_load') as $module) {
$function = $module . '_file_load';
$function($files);
}
}
return $files;
}
/**
* Load a file object from the database.
*
* @param $fid
* A file ID.
* @return
* A file object.
*
* @see hook_file_load()
* @see file_load_multiple()
*/
function file_load($fid) {
$files = file_load_multiple(array($fid), array());
return reset($files);
}
/**
* Save a file object to the database.
*
* If the $file->fid is not set a new record will be added. Re-saving an
* existing file will not change its status.
*
* @param $file
* A file object returned by file_load().
* @return
* The updated file object.
*
* @see hook_file_insert()
* @see hook_file_update()
*/
function file_save($file) {
$file = (object)$file;
$file->timestamp = REQUEST_TIME;
$file->filesize = filesize($file->filepath);
if (empty($file->fid)) {
drupal_write_record('files', $file);
// Inform modules about the newly added file.
module_invoke_all('file_insert', $file);
}
else {
drupal_write_record('files', $file, 'fid');
// Inform modules that the file has been updated.
module_invoke_all('file_update', $file);
}
return $file;
}
/**
* Copy a file to a new location and adds a file record to the database.
*
* This function should be used when manipulating files that have records
* stored in the database. This is a powerful function that in many ways
* performs like an advanced version of copy().
* - Checks if $source and $destination are valid and readable/writable.
* - Checks that $source is not equal to $destination; if they are an error
* is reported.
* - If file already exists in $destination either the call will error out,
* replace the file or rename the file based on the $replace parameter.
* - Adds the new file to the files database. If the source file is a
* temporary file, the resulting file will also be a temporary file.
* @see file_save_upload() for details on temporary files.
*
* @param $source
* A file object.
* @param $destination
* A string containing the destination that $source should be copied to. This
* can be a complete file path, a directory path or, if this value is omitted,
* Drupal's 'files' directory will be used.
* @param $replace
* Replace behavior when the destination file already exists:
* - FILE_EXISTS_REPLACE - Replace the existing file. If a managed file with
* the destination name exists then its database entry will be updated. If
* no database entry is found then a new one will be created.
* - FILE_EXISTS_RENAME - Append _{incrementing number} until the filename is
* unique.
* - FILE_EXISTS_ERROR - Do nothing and return FALSE.
* @return
* File object if the copy is successful, or FALSE in the event of an error.
*
* @see file_unmanaged_copy()
* @see hook_file_copy()
*/
function file_copy($source, $destination = NULL, $replace = FILE_EXISTS_RENAME) {
$source = (object)$source;
if ($filepath = file_unmanaged_copy($source->filepath, $destination, $replace)) {
$file = clone $source;
$file->fid = NULL;
$file->filepath = $filepath;
$file->filename = basename($filepath);
// If we are replacing an existing file re-use its database record.
if ($replace == FILE_EXISTS_REPLACE) {
$existing_files = file_load_multiple(array(), array('filepath' => $filepath));
if (count($existing_files)) {
$existing = reset($existing_files);
$file->fid = $existing->fid;
$file->filename = $existing->filename;
}
}
// If we are renaming around an existing file (rather than a directory),
// use its basename for the filename.
else if ($replace == FILE_EXISTS_RENAME && is_file(file_create_path($destination))) {
$file->filename = basename($destination);
}
$file = file_save($file);
// Inform modules that the file has been copied.
module_invoke_all('file_copy', $file, $source);
return $file;
}
return FALSE;
}
/**
* Copy a file to a new location without calling any hooks or making any * changes to the database.
*
* This is a powerful function that in many ways performs like an advanced
* version of copy().
* - Checks if $source and $destination are valid and readable/writable.
* - Checks that $source is not equal to $destination; if they are an error
* is reported.
* - If file already exists in $destination either the call will error out,
* replace the file or rename the file based on the $replace parameter.
*
* @param $source
* A string specifying the file location of the original file.
* @param $destination
* A string containing the destination that $source should be copied to. This
* can be a complete file path, a directory path or, if this value is omitted,
* Drupal's 'files' directory will be used.
* @param $replace
* Replace behavior when the destination file already exists:
* - FILE_EXISTS_REPLACE - Replace the existing file.
* - FILE_EXISTS_RENAME - Append _{incrementing number} until the filename is
* unique.
* - FILE_EXISTS_ERROR - Do nothing and return FALSE.
* @return
* The path to the new file, or FALSE in the event of an error.
*
* @see file_copy()
*/
function file_unmanaged_copy($source, $destination = NULL, $replace = FILE_EXISTS_RENAME) {
$source = realpath($source);
if (!file_exists($source)) {
drupal_set_message(t('The specified 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');
return FALSE;
}
$destination = file_create_path($destination);
$directory = $destination;
$basename = file_check_path($directory);
// Make sure we at least have a valid directory.
if ($basename === FALSE) {
drupal_set_message(t('The specified file %file could not be copied, because the destination %directory is not properly configured.', array('%file' => $source, '%directory' => $destination)), 'error');
return FALSE;
}
// If the destination file is not specified then use the filename of the
// source file.
$basename = $basename ? $basename : basename($source);
$destination = file_destination($directory . '/' . $basename, $replace);
if ($destination === FALSE) {
drupal_set_message(t('The specified file %file could not be copied because a file by that name already exists in the destination.', array('%file' => $source)), 'error');
return FALSE;
}
// Make sure source and destination filenames are not the same, makes no
// sense to copy it if they are. In fact copying the file will most likely
// result in a 0 byte file. Which is bad. Real bad.
if ($source == realpath($destination)) {
drupal_set_message(t('The specified file %file was not copied because it would overwrite itself.', array('%file' => $source)), 'error');
return FALSE;
}
if (!@copy($source, $destination)) {
drupal_set_message(t('The specified file %file could not be copied.', array('%file' => $source)), 'error');
return FALSE;
}
// Give everyone read access so that FTP'd users or
// non-webserver users can see/read these files,
// and give group write permissions so group members
// can alter files uploaded by the webserver.
@chmod($destination, 0664);
return $destination;
}
/**
* Determines the destination path for a file depending on how replacement of
* existing files should be handled.
*
* @param $destination
* A string specifying the desired path.
* @param $replace
* Replace behavior when the destination file already exists.
* - FILE_EXISTS_REPLACE - Replace the existing file.
* - FILE_EXISTS_RENAME - Append _{incrementing number} until the filename is
* unique.
* - FILE_EXISTS_ERROR - Do nothing and return FALSE.
* @return
* The destination file path or FALSE if the file already exists and
* FILE_EXISTS_ERROR was specified.
*/
function file_destination($destination, $replace) {
if (file_exists($destination)) {
switch ($replace) {
case FILE_EXISTS_REPLACE:
// Do nothing here, we want to overwrite the existing file.
break;
case FILE_EXISTS_RENAME:
$basename = basename($destination);
$directory = dirname($destination);
$destination = file_create_filename($basename, $directory);
break;
case FILE_EXISTS_ERROR:
drupal_set_message(t('The specified file %file could not be copied, because a file by that name already exists in the destination.', array('%file' => $destination)), 'error');
return FALSE;
}
}
return $destination;
}
/**
* Move a file to a new location and update the file's database entry.
*
* Moving a file is performed by copying the file to the new location and then
* deleting the original.
* - Checks if $source and $destination are valid and readable/writable.
* - Performs a file move if $source is not equal to $destination.
* - If file already exists in $destination either the call will error out,
* replace the file or rename the file based on the $replace parameter.
* - Adds the new file to the files database.
*
* @param $source
* A file object.
* @param $destination
* A string containing the destination that $source should be moved to. This
* can be a complete file path, a directory path or, if this value is omitted,
* Drupal's 'files' directory will be used.
* @param $replace
* Replace behavior when the destination file already exists:
* - FILE_EXISTS_REPLACE - Replace the existing file. If a managed file with
* the destination name exists then its database entry will be updated and
* file_delete() called on the source file after hook_file_move is called.
* If no database entry is found then the source files record will be
* updated.
* - FILE_EXISTS_RENAME - Append _{incrementing number} until the filename is
* unique.
* - FILE_EXISTS_ERROR - Do nothing and return FALSE.
* @return
* Resulting file object for success, or FALSE in the event of an error. *
* @see file_unmanaged_move()
* @see hook_file_move()
*/
function file_move($source, $destination = NULL, $replace = FILE_EXISTS_RENAME) {
$source = (object)$source;
if ($filepath = file_unmanaged_move($source->filepath, $destination, $replace)) {
$delete_source = FALSE;
$file = clone $source;
$file->filepath = $filepath;
// If we are replacing an existing file re-use its database record.
if ($replace == FILE_EXISTS_REPLACE) {
$existing_files = file_load_multiple(array(), array('filepath' => $filepath));
if (count($existing_files)) {
$existing = reset($existing_files);
$delete_source = TRUE;
$file->fid = $existing->fid;
}
}
// If we are renaming around an existing file (rather than a directory),
// use its basename for the filename.
else if ($replace == FILE_EXISTS_RENAME && is_file(file_create_path($destination))) {
$file->filename = basename($destination);
}
$file = file_save($file);
// Inform modules that the file has been moved.
module_invoke_all('file_move', $file, $source);
if ($delete_source) {
// Try a soft delete to remove original if it's not in use elsewhere.
file_delete($source);
}
return $file;
}
return FALSE;
}
/**
* Move a file to a new location without calling any hooks or making any
* changes to the database.
*
* @param $source
* A string specifying the file location of the original file.
* @param $destination
* A string containing the destination that $source should be moved to. This
* can be a complete file path, a directory name or, if this value is omitted,
* Drupal's 'files' directory will be used.
* @param $replace
* Replace behavior when the destination file already exists:
* - FILE_EXISTS_REPLACE - Replace the existing file.
* - FILE_EXISTS_RENAME - Append _{incrementing number} until the filename is
* unique.
* - FILE_EXISTS_ERROR - Do nothing and return FALSE.
* @return
* The filepath of the moved file, or FALSE in the event of an error.
*
* @see file_move()
*/
function file_unmanaged_move($source, $destination = NULL, $replace = FILE_EXISTS_RENAME) {
$filepath = file_unmanaged_copy($source, $destination, $replace);
if ($filepath == FALSE || file_unmanaged_delete($source) == FALSE) {
return FALSE;
}
return $filepath;
}
/**
* Munge the filename as needed for security purposes.
*
* For instance the file name "exploit.php.pps" would become "exploit.php_.pps".
*
* @param $filename
* The name of a file to modify.
* @param $extensions
* A space separated list of extensions that should not be altered.
* @param $alerts
* Whether alerts (watchdog, drupal_set_message()) should be displayed.
* @return
* $filename The potentially modified $filename.
*/
function file_munge_filename($filename, $extensions, $alerts = TRUE) {
$original = $filename;
// Allow potentially insecure uploads for very savvy users and admin
if (!variable_get('allow_insecure_uploads', 0)) {
$whitelist = array_unique(explode(' ', trim($extensions)));
// Split the filename up by periods. The first part becomes the basename
// the last part the final extension.
$filename_parts = explode('.', $filename);
$new_filename = array_shift($filename_parts); // Remove file basename.
$final_extension = array_pop($filename_parts); // Remove final extension.
// Loop through the middle parts of the name and add an underscore to the
// end of each section that could be a file extension but isn't in the list
// of allowed extensions.
foreach ($filename_parts as $filename_part) {
$new_filename .= '.' . $filename_part;
if (!in_array($filename_part, $whitelist) && preg_match("/^[a-zA-Z]{2,5}\d?$/", $filename_part)) {
$new_filename .= '_';
}
}
$filename = $new_filename . '.' . $final_extension;
if ($alerts && $original != $filename) {
drupal_set_message(t('For security reasons, your upload has been renamed to %filename.', array('%filename' => $filename)));
}
}
return $filename;
}
/**
* Undo the effect of upload_munge_filename().
*
* @param $filename
* String with the filename to be unmunged.
* @return
* An unmunged filename string.
*/
function file_unmunge_filename($filename) {
return str_replace('_.', '.', $filename);
}
/**
* Create a full file path from a directory and filename.
*
* If a file with the specified name already exists, an alternative will be
* used.
*
* @param $basename
* String filename
* @param $directory
* String directory
* @return * File path consisting of $directory and a unique filename based off
* of $basename.
*/
function file_create_filename($basename, $directory) {
$destination = $directory . '/' . $basename;
if (file_exists($destination)) {
// Destination file already exists, generate an alternative.
$pos = strrpos($basename, '.');
if ($pos !== FALSE) {
$name = substr($basename, 0, $pos);
$ext = substr($basename, $pos);
}
else {
$name = $basename;
$ext = '';
}
$counter = 0;
do {
$destination = $directory . '/' . $name . '_' . $counter++ . $ext;
} while (file_exists($destination));
}
return $destination;
}
/**
* Delete a file and its database record.
*
* If the $force parameter is not TRUE hook_file_references() will be called
* to determine if the file is being used by any modules. If the file is being
* used is the delete will be canceled.
*
* @param $file
* A file object.
* @param $force
* Boolean indicating that the file should be deleted even if
* hook_file_references() reports that the file is in use.
* @return mixed
* TRUE for success, FALSE in the event of an error, or an array if the file
* is being used by another module. The array keys are the module's name and
* the values are the number of references.
*
* @see file_unmanaged_delete()
* @see hook_file_references()
* @see hook_file_delete()
*/
function file_delete($file, $force = FALSE) {
$file = (object)$file;
// If any module returns a value from the reference hook, the file will not
// be deleted from Drupal, but file_delete will return a populated array that
// tests as TRUE.
if (!$force && ($references = module_invoke_all('file_references', $file))) {
return $references;
}
// Let other modules clean up any references to the deleted file.
module_invoke_all('file_delete', $file);
// Make sure the file is deleted before removing its row from the
// database, so UIs can still find the file in the database.
if (file_unmanaged_delete($file->filepath)) {
db_delete('files')->condition('fid', $file->fid)->execute();
return TRUE;
}
return FALSE;
}
/**
* Delete a file without calling any hooks or making any changes to the
* database.
*
* This function should be used when the file to be deleted does not have an
* entry recorded in the files table.
*
* @param $path
* A string containing a file path.
* @return
* TRUE for success or path does not exist, or FALSE in the event of an
* error.
*
* @see file_delete()
*/
function file_unmanaged_delete($path) {
if (is_dir($path)) {
watchdog('file', '%path is a directory and cannot be removed using file_unmanaged_delete().', array('%path' => $path), WATCHDOG_ERROR);
return FALSE;
}
if (is_file($path)) {
return unlink($path);
}
// Return TRUE for non-existent file, but log that nothing was actually
// deleted, as the current state is the indended result.
if (!file_exists($path)) {
watchdog('file', 'The file %path was not deleted, because it does not exist.', array('%path' => $path), WATCHDOG_NOTICE);
return TRUE;
}
// Catch all for everything else: sockets, symbolic links, etc.
return FALSE;
}
/**
* Determine total disk space used by a single user or the whole filesystem.
*
* @param $uid
* Optional. A user id, specifying NULL returns the total space used by all
* non-temporary files.
* @param $status
* Optional. File Status to return. Combine with a bitwise OR(|) to return
* multiple statuses. The default status is FILE_STATUS_PERMANENT.
* @return
* An integer containing the number of bytes used.
*/
function file_space_used($uid = NULL, $status = FILE_STATUS_PERMANENT) {
$query = db_select('files', 'f');
// Use separate placeholders for the status to avoid a bug in some versions
// of PHP. @see http://drupal.org/node/352956
$query->where('f.status & :status1 = :status2', array(':status1' => $status, ':status2' => $status));
$query->addExpression('SUM(f.filesize)', 'filesize');
if (!is_null($uid)) {
$query->condition('f.uid', $uid);
}
return $query->execute()->fetchField();
}
/**
* Saves a file upload to a new location.
*
* The file will be added to the files table as a temporary file. Temporary
* files are periodically cleaned. To make the file a permanent file call
* assign the status and use file_save() to save it.
*
* @param $source
* A string specifying the name of the upload field to save.
* @param $validators
* An optional, associative array of callback functions used to validate the
* file. See @file_validate for a full discussion of the array format.
* @param $destination * A string containing the directory $source should be copied to. If this is
* not provided or is not writable, the temporary directory will be used.
* @param $replace
* A boolean indicating whether an existing file of the same name in the
* destination directory should overwritten. A false value will generate a
* new, unique filename in the destination directory.
* @return
* An object containing the file information if the upload succeeded, FALSE
* in the event of an error, or NULL if no file was uploaded.
*/
function file_save_upload($source, $validators = array(), $destination = FALSE, $replace = FILE_EXISTS_RENAME) {
global $user;
static $upload_cache;
// Return cached objects without processing since the file will have
// already been processed and the paths in _FILES will be invalid.
if (isset($upload_cache[$source])) {
return $upload_cache[$source];
}
// Make sure there's an upload to process.
if (empty($_FILES['files']['name'][$source])) {
return NULL;
}
// Check for file upload errors and return FALSE if a lower level system
// error occurred. For a complete list of errors:
// @see http://php.net/manual/en/features.file-upload.errors.php
switch ($_FILES['files']['error'][$source]) {
case UPLOAD_ERR_INI_SIZE:
case UPLOAD_ERR_FORM_SIZE:
drupal_set_message(t('The file %file could not be saved, because it exceeds %maxsize, the maximum allowed size for uploads.', array('%file' => $_FILES['files']['name'][$source], '%maxsize' => format_size(file_upload_max_size()))), 'error');
return FALSE;
case UPLOAD_ERR_PARTIAL:
case UPLOAD_ERR_NO_FILE:
drupal_set_message(t('The file %file could not be saved, because the upload did not complete.', array('%file' => $_FILES['files']['name'][$source])), 'error');
return FALSE;
case UPLOAD_ERR_OK:
// Final check that this is a valid upload, if it isn't, use the
// default error handler.
if (is_uploaded_file($_FILES['files']['tmp_name'][$source])) {
break;
}
// Unknown error
default:
drupal_set_message(t('The file %file could not be saved. An unknown error has occurred.', array('%file' => $_FILES['files']['name'][$source])), 'error');
return FALSE;
}
// Build the list of non-munged extensions.
// @todo: this should not be here. we need to figure out the right place.
$extensions = '';
foreach ($user->roles as $rid => $name) {
$extensions .= ' ' . variable_get("upload_extensions_$rid",
variable_get('upload_extensions_default', 'jpg jpeg gif png txt html doc xls pdf ppt pps odt ods odp'));
}
// Begin building file object.
$file = new stdClass();
$file->uid = $user->uid;
$file->status = 0;
$file->filename = file_munge_filename(trim(basename($_FILES['files']['name'][$source]), '.'), $extensions);
$file->filepath = $_FILES['files']['tmp_name'][$source];
$file->filemime = file_get_mimetype($file->filename);
$file->filesize = $_FILES['files']['size'][$source];
// Rename potentially executable files, to help prevent exploits. if (preg_match('/\.(php|pl|py|cgi|asp|js)$/i', $file->filename) && (substr($file->filename, -4) != '.txt')) {
$file->filemime = 'text/plain';
$file->filepath .= '.txt';
$file->filename .= '.txt';
}
// If the destination is not provided, or is not writable, then use the
// temporary directory.
if (empty($destination) || file_check_path($destination) === FALSE) {
$destination = file_directory_temp();
}
$file->source = $source;
$file->destination = file_destination(file_create_path($destination . '/' . $file->filename), $replace);
// If file_destination() returns FALSE then $replace == FILE_EXISTS_ERROR and
// there's an existing file so we need to bail.
if ($file->destination === FALSE) {
return FALSE;
}
// Add in our check of the the file name length.
$validators['file_validate_name_length'] = array();
// Call the validation functions specified by this function's caller.
$errors = file_validate($file, $validators);
// Check for errors.
if (!empty($errors)) {
$message = t('The specified file %name could not be uploaded.', array('%name' => $file->filename));
if (count($errors) > 1) {
$message .= theme('item_list', $errors);
}
else {
$message .= ' ' . array_pop($errors);
}
form_set_error($source, $message);
return FALSE;
}
// Move uploaded files from PHP's upload_tmp_dir to Drupal's temporary
// directory. This overcomes open_basedir restrictions for future file
// operations.
$file->filepath = $file->destination;
if (!move_uploaded_file($_FILES['files']['tmp_name'][$source], $file->filepath)) {
form_set_error($source, t('File upload error. Could not move uploaded file.'));
watchdog('file', 'Upload error. Could not move uploaded file %file to destination %destination.', array('%file' => $file->filename, '%destination' => $file->filepath));
return FALSE;
}
// If we are replacing an existing file re-use its database record.
if ($replace == FILE_EXISTS_REPLACE) {
$existing_files = file_load_multiple(array(), array('filepath' => $file->filepath));
if (count($existing_files)) {
$existing = reset($existing_files);
$file->fid = $existing->fid;
}
}
// If we made it this far it's safe to record this file in the database.
if ($file = file_save($file)) {
// Add file to the cache.
$upload_cache[$source] = $file;
return $file;
}
return FALSE;
}
/**
* Check that a file meets the criteria specified by the validators. *
* After executing the validator callbacks specified hook_file_validate() will
* also be called to allow other modules to report errors about the file.
*
* @param $file
* A Drupal file object.
* @param $validators
* An optional, associative array of callback functions used to validate the
* file. The keys are function names and the values arrays of callback
* parameters which will be passed in after the user and file objects. The
* functions should return an array of error messages, an empty array
* indicates that the file passed validation. The functions will be called in
* the order specified.
* @return
* An array contaning validation error messages.
*
* @see hook_file_validate()
*/
function file_validate(&$file, $validators = array()) {
// Call the validation functions specified by this function's caller.
$errors = array();
foreach ($validators as $function => $args) {
array_unshift($args, $file);
$errors = array_merge($errors, call_user_func_array($function, $args));
}
// Let other modules perform validation on the new file.
return array_merge($errors, module_invoke_all('file_validate', $file));
}
/**
* Check for files with names longer than we can store in the database.
*
* @param $file
* A Drupal file object.
* @return
* An array. If the file name is too long, it will contain an error message.
*/
function file_validate_name_length($file) {
$errors = array();
if (empty($file->filename)) {
$errors[] = t("The file's name is empty. Please give a name to the file.");
}
if (strlen($file->filename) > 255) {
$errors[] = t("The file's name exceeds the 255 characters limit. Please rename the file and try again.");
}
return $errors;
}
/**
* Check that the filename ends with an allowed extension.
*
* @param $file
* A Drupal file object.
* @param $extensions
* A string with a space separated
* @return
* An array. If the file extension is not allowed, it will contain an error
* message.
*
* @see hook_file_validate()
*/
function file_validate_extensions($file, $extensions) {
global $user;
$errors = array();
$regex = '/\.(' . preg_replace('/ +/', '|', preg_quote($extensions)) . ')$/i';
if (!preg_match($regex, $file->filename)) { $errors[] = t('Only files with the following extensions are allowed: %files-allowed.', array('%files-allowed' => $extensions));
}
return $errors;
}
/**
* Check that the file's size is below certain limits.
*
* This check is not enforced for the user #1.
*
* @param $file
* A Drupal file object.
* @param $file_limit
* An integer specifying the maximum file size in bytes. Zero indicates that
* no limit should be enforced.
* @param $user_limit
* An integer specifying the maximum number of bytes the user is allowed.
* Zero indicates that no limit should be enforced.
* @return
* An array. If the file size exceeds limits, it will contain an error
* message.
*
* @see hook_file_validate()
*/
function file_validate_size($file, $file_limit = 0, $user_limit = 0) {
global $user;
$errors = array();
// Bypass validation for uid = 1.
if ($user->uid != 1) {
if ($file_limit && $file->filesize > $file_limit) {
$errors[] = t('The file is %filesize exceeding the maximum file size of %maxsize.', array('%filesize' => format_size($file->filesize), '%maxsize' => format_size($file_limit)));
}
if ($user_limit && (file_space_used($user->uid) + $file->filesize) > $user_limit) {
$errors[] = t('The file is %filesize which would exceed your disk quota of %quota.', array('%filesize' => format_size($file->filesize), '%quota' => format_size($user_limit)));
}
}
return $errors;
}
/**
* Check that the file is recognized by image_get_info() as an image.
*
* @param $file
* A Drupal file object.
* @return
* An array. If the file is not an image, it will contain an error message.
*
* @see hook_file_validate()
*/
function file_validate_is_image($file) {
$errors = array();
$info = image_get_info($file->filepath);
if (!$info || empty($info['extension'])) {
$errors[] = t('Only JPEG, PNG and GIF images are allowed.');
}
return $errors;
}
/**
* If the file is an image verify that its dimensions are within the specified
* maximum and minimum dimensions.
*
* Non-image files will be ignored. If a image toolkit is available the image
* will be scalled to fit within the desired maximum dimensions.
* * @param $file
* A Drupal file object. This function may resize the file affecting its
* size.
* @param $maximum_dimensions
* An optional string in the form WIDTHxHEIGHT e.g. '640x480' or '85x85'. If
* an image toolkit is installed the image will be resized down to these
* dimensions. A value of 0 indicates no restriction on size, so resizing
* will be attempted.
* @param $minimum_dimensions
* An optional string in the form WIDTHxHEIGHT. This will check that the
* image meets a minimum size. A value of 0 indicates no restriction.
* @return
* An array. If the file is an image and did not meet the requirements, it
* will contain an error message.
*
* @see hook_file_validate()
*/
function file_validate_image_resolution($file, $maximum_dimensions = 0, $minimum_dimensions = 0) {
$errors = array();
// Check first that the file is an image.
if ($info = image_get_info($file->filepath)) {
if ($maximum_dimensions) {
// Check that it is smaller than the given dimensions.
list($width, $height) = explode('x', $maximum_dimensions);
if ($info['width'] > $width || $info['height'] > $height) {
// Try to resize the image to fit the dimensions.
if (image_get_toolkit() && image_scale($file->filepath, $file->filepath, $width, $height)) {
drupal_set_message(t('The image was resized to fit within the maximum allowed dimensions of %dimensions pixels.', array('%dimensions' => $maximum_dimensions)));
// Clear the cached filesize and refresh the image information.
clearstatcache();
$info = image_get_info($file->filepath);
$file->filesize = $info['file_size'];
}
else {
$errors[] = t('The image is too large; the maximum dimensions are %dimensions pixels.', array('%dimensions' => $maximum_dimensions));
}
}
}
if ($minimum_dimensions) {
// Check that it is larger than the given dimensions.
list($width, $height) = explode('x', $minimum_dimensions);
if ($info['width'] < $width || $info['height'] < $height) {
$errors[] = t('The image is too small; the minimum dimensions are %dimensions pixels.', array('%dimensions' => $minimum_dimensions));
}
}
}
return $errors;
}
/**
* Save a string to the specified destination and create a database file entry.
*
* @param $data
* A string containing the contents of the file.
* @param $destination
* A string containing the destination location. If no value is provided
* then a randomly name will be generated and the file saved in Drupal's
* files directory.
* @param $replace
* Replace behavior when the destination file already exists:
* - FILE_EXISTS_REPLACE - Replace the existing file. If a managed file with
* the destination name exists then its database entry will be updated. If
* no database entry is found then a new one will be created.
* - FILE_EXISTS_RENAME - Append _{incrementing number} until the filename is
* unique.
* - FILE_EXISTS_ERROR - Do nothing and return FALSE. * @return
* A file object, or FALSE on error.
*
* @see file_unmanaged_save_data()
*/
function file_save_data($data, $destination = NULL, $replace = FILE_EXISTS_RENAME) {
global $user;
if ($filepath = file_unmanaged_save_data($data, $destination, $replace)) {
// Create a file object.
$file = new stdClass();
$file->fid = NULL;
$file->filepath = $filepath;
$file->filename = basename($filepath);
$file->filemime = file_get_mimetype($file->filepath);
$file->uid = $user->uid;
$file->status |= FILE_STATUS_PERMANENT;
// If we are replacing an existing file re-use its database record.
if ($replace == FILE_EXISTS_REPLACE) {
$existing_files = file_load_multiple(array(), array('filepath' => $filepath));
if (count($existing_files)) {
$existing = reset($existing_files);
$file->fid = $existing->fid;
$file->filename = $existing->filename;
}
}
// If we are renaming around an existing file (rather than a directory),
// use its basename for the filename.
else if ($replace == FILE_EXISTS_RENAME && is_file(file_create_path($destination))) {
$file->filename = basename($destination);
}
return file_save($file);
}
return FALSE;
}
/**
* Save a string to the specified destination without calling any hooks or
* making any changes to the database.
*
* This function is identical to file_save_data() except the file will not be
* saved to the files table and none of the file_* hooks will be called.
*
* @param $data
* A string containing the contents of the file.
* @param $destination
* A string containing the destination location. If no value is provided
* then a randomly name will be generated and the file saved in Drupal's
* files directory.
* @param $replace
* Replace behavior when the destination file already exists:
* - FILE_EXISTS_REPLACE - Replace the existing file.
* - FILE_EXISTS_RENAME - Append _{incrementing number} until the filename is
* unique.
* - FILE_EXISTS_ERROR - Do nothing and return FALSE.
* @return
* A string with the path of the resulting file, or FALSE on error.
*
* @see file_save_data()
*/
function file_unmanaged_save_data($data, $destination = NULL, $replace = FILE_EXISTS_RENAME) {
// Write the data to a temporary file.
$temp_name = tempnam(file_directory_temp(), 'file');
if (file_put_contents($temp_name, $data) === FALSE) {
drupal_set_message(t('The file could not be created.'), 'error');
return FALSE;
}
// Move the file to its final destination. return file_unmanaged_move($temp_name, $destination, $replace);
}
/**
* Transfer file using HTTP to client. Pipes a file through Drupal to the
* client.
*
* @param $source
* String specifying the file path to transfer.
* @param $headers
* An array of HTTP headers to send along with file.
*/
function file_transfer($source, $headers) {
if (ob_get_level()) {
ob_end_clean();
}
foreach ($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();
}
/**
* Menu handler for private file transfers.
*
* 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.
*
* @see hook_file_download()
*/
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))) {
// Let other modules provide headers and controls access to the file.
$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, without trailing slash.
* @param $mask
* The preg_match() regular expression of the files to find.
* @param $nomask
* The preg_match() regular expression of the files 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, $nomask = '/(\.\.?|CVS)$/', $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 (!preg_match($nomask, $file) && $file[0] != '.') {
if (is_dir("$dir/$file") && $recurse) {
// Give priority to files in this folder by merging them in after any subdirectory files.
$files = array_merge(file_scan_directory("$dir/$file", $mask, $nomask, $callback, $recurse, $key, $min_depth, $depth + 1), $files);
}
elseif ($depth >= $min_depth && preg_match($mask, $file)) {
// Always use this match over anything already set in $files with the
// same $$key.
$filename = "$dir/$file";
$basename = basename($file);
$name = substr($basename, 0, strrpos($basename, '.'));
$files[$$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';
}
else {
$directories[] = '/tmp';
}
foreach ($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'
$temporary_directory = $temporary_directory ? $temporary_directory : file_directory_path() . '/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', conf_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';
}
/**
* @} End of "defgroup file".
*/