/**
* Return default MIME-type for the specified extension.
*
* @param string $type MIME-type
*
* @return string A file extension without leading period.
*/
function getExtension($type)
{
include_once 'MIME/Type.php';
// Strip parameters and comments.
$type = MIME_Type::getMedia($type) . '/' . MIME_Type::getSubType($type);
$extension = array_search($type, $this->extensionToType);
if ($extension === false) {
return PEAR::raiseError("Sorry, couldn't determine extension.");
}
return $extension;
}
/**
* Perform a wildcard match on a MIME type
*
* Example:
* MIME_Type::wildcardMatch('image/*', 'image/png')
*
* @param string $card Wildcard to check against
* @param string $type MIME type to check
* @return boolean true if there was a match, false otherwise
*/
function wildcardMatch($card, $type)
{
if (!MIME_Type::isWildcard($card)) {
return false;
}
if ($card == '*/*') {
return true;
}
if (MIME_Type::getMedia($card) == MIME_Type::getMedia($type)) {
return true;
}
return false;
}
/**
*
*/
public function testGetMedia()
{
$this->assertEquals('text', MIME_Type::getMedia('text/plain'));
$this->assertEquals('application', MIME_Type::getMedia('application/ogg'));
$this->assertEquals('*', MIME_Type::getMedia('*/*'));
}
/**
* Attempt to identify the content type of a given file.
*
* @param mixed $f file handle resource, or filesystem path as string
* @param string $originalFilename (optional) for extension-based detection
* @return string
*
* @fixme is this an internal or public method? It's called from GetFileAction
* @fixme this seems to tie a front-end error message in, kinda confusing
* @fixme this looks like it could return a PEAR_Error in some cases, if
* type can't be identified and $config['attachments']['supported'] is true
*
* @throws ClientException if type is known, but not supported for local uploads
*/
static function getUploadedFileType($f, $originalFilename = false)
{
require_once 'MIME/Type.php';
require_once 'MIME/Type/Extension.php';
// We have to disable auto handling of PEAR errors
PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
$mte = new MIME_Type_Extension();
$cmd =& PEAR::getStaticProperty('MIME_Type', 'fileCmd');
$cmd = common_config('attachments', 'filecommand');
$filetype = null;
// If we couldn't get a clear type from the file extension,
// we'll go ahead and try checking the content. Content checks
// are unambiguous for most image files, but nearly useless
// for office document formats.
if (is_string($f)) {
// assuming a filename
$filetype = MIME_Type::autoDetect($f);
} else {
// assuming a filehandle
$stream = stream_get_meta_data($f);
$filetype = MIME_Type::autoDetect($stream['uri']);
}
// The content-based sources for MIME_Type::autoDetect()
// are wildly unreliable for office-type documents. If we've
// gotten an unclear reponse back or just couldn't identify it,
// we'll try detecting a type from its extension...
$unclearTypes = array('application/octet-stream', 'application/vnd.ms-office', 'application/zip', 'text/xml');
if ($originalFilename && (!$filetype || in_array($filetype, $unclearTypes))) {
$type = $mte->getMIMEType($originalFilename);
if (is_string($type)) {
$filetype = $type;
}
}
$supported = common_config('attachments', 'supported');
if (is_array($supported)) {
// Normalize extensions to mime types
foreach ($supported as $i => $entry) {
if (strpos($entry, '/') === false) {
common_log(LOG_INFO, "sample.{$entry}");
$supported[$i] = $mte->getMIMEType("sample.{$entry}");
}
}
}
if ($supported === true || in_array($filetype, $supported)) {
// Restore PEAR error handlers for our DB code...
PEAR::staticPopErrorHandling();
return $filetype;
}
$media = MIME_Type::getMedia($filetype);
if ('application' !== $media) {
// TRANS: Client exception thrown trying to upload a forbidden MIME type.
// TRANS: %1$s is the file type that was denied, %2$s is the application part of
// TRANS: the MIME type that was denied.
$hint = sprintf(_('"%1$s" is not a supported file type on this server. ' . 'Try using another %2$s format.'), $filetype, $media);
} else {
// TRANS: Client exception thrown trying to upload a forbidden MIME type.
// TRANS: %s is the file type that was denied.
$hint = sprintf(_('"%s" is not a supported file type on this server.'), $filetype);
}
// Restore PEAR error handlers for our DB code...
PEAR::staticPopErrorHandling();
throw new ClientException($hint);
}
static function getUploadedFileType($f)
{
require_once 'MIME/Type.php';
$cmd =& PEAR::getStaticProperty('MIME_Type', 'fileCmd');
$cmd = common_config('attachments', 'filecommand');
$filetype = null;
if (is_string($f)) {
// assuming a filename
$filetype = MIME_Type::autoDetect($f);
} else {
// assuming a filehandle
$stream = stream_get_meta_data($f);
$filetype = MIME_Type::autoDetect($stream['uri']);
}
if (common_config('attachments', 'supported') === true || in_array($filetype, common_config('attachments', 'supported'))) {
return $filetype;
}
$media = MIME_Type::getMedia($filetype);
if ('application' !== $media) {
$hint = sprintf(_(' Try using another %s format.'), $media);
} else {
$hint = '';
}
throw new ClientException(sprintf(_('%s is not a supported file type on this server.'), $filetype) . $hint);
}
