3 if (!defined('GNUSOCIAL')) { exit(1); }
5 // FIXME: To support remote video/whatever files, this plugin needs reworking.
7 class StoreRemoteMediaPlugin extends Plugin
9 const PLUGIN_VERSION = '2.0.0';
11 // settings which can be set in config.php with addPlugin('Oembed', array('param'=>'value', ...));
12 // WARNING, these are _regexps_ (slashes added later). Always escape your dots and end your strings
13 public $domain_whitelist = array( // hostname => service provider
14 '^i\d*\.ytimg\.com$' => 'YouTube',
15 '^i\d*\.vimeocdn\.com$' => 'Vimeo',
17 public $append_whitelist = array(); // fill this array as domain_whitelist to add more trusted sources
18 public $check_whitelist = false; // security/abuse precaution
20 public $domain_blacklist = array();
21 public $check_blacklist = false;
23 public $max_image_bytes = 10485760; // 10MiB max image size by default
25 protected $imgData = array();
27 // these should be declared protected everywhere
28 public function initialize()
32 $this->domain_whitelist = array_merge($this->domain_whitelist, $this->append_whitelist);
36 * Save embedding information for a File, if applicable.
38 * Normally this event is called through File::saveNew()
40 * @param File $file The abount-to-be-inserted File object.
42 * @return boolean success
44 public function onStartFileSaveNew(File &$file)
46 // save given URL as title if it's a media file this plugin understands
47 // which will make it shown in the AttachmentList widgets
49 if (isset($file->title) && strlen($file->title)>0) {
50 // Title is already set
53 if (!isset($file->mimetype)) {
54 // Unknown mimetype, it's not our job to figure out what it is.
57 switch (common_get_mime_media($file->mimetype)) {
59 // Just to set something for now at least...
60 //$file->title = $file->mimetype;
67 public function onCreateFileImageThumbnailSource(File $file, &$imgPath, $media=null)
69 // If we are on a private node, we won't do any remote calls (just as a precaution until
70 // we can configure this from config.php for the private nodes)
71 if (common_config('site', 'private')) {
75 if ($media !== 'image') {
79 // If there is a local filename, it is either a local file already or has already been downloaded.
80 if (!empty($file->filename)) {
84 $remoteUrl = $file->getUrl();
86 if (!$this->checkWhiteList($remoteUrl) ||
87 !$this->checkBlackList($remoteUrl)) {
93 $http = new HTTPClient();
94 common_debug(sprintf('Performing HEAD request for remote file id==%u to avoid unnecessarily downloading too large files. URL: %s', $file->getID(), $remoteUrl));
95 $head = $http->head($remoteUrl);
96 $remoteUrl = $head->getEffectiveUrl(); // to avoid going through redirects again
97 if (!$this->checkBlackList($remoteUrl)) {
98 common_log(LOG_WARN, sprintf('%s: Non-blacklisted URL %s redirected to blacklisted URL %s', __CLASS__, $file->getUrl(), $remoteUrl));
102 $headers = $head->getHeader();
103 $filesize = isset($headers['content-length']) ? $headers['content-length'] : null;
105 $filesize = $file->getSize();
106 if (empty($filesize)) {
107 // file size not specified on remote server
108 common_debug(sprintf('%s: Ignoring remote media because we did not get a content length for file id==%u', __CLASS__, $file->getID()));
110 } elseif ($filesize > $this->max_image_bytes) {
111 //FIXME: When we perhaps start fetching videos etc. we'll need to differentiate max_image_bytes from that...
112 // file too big according to plugin configuration
113 common_debug(sprintf('%s: Skipping remote media because content length (%u) is larger than plugin configured max_image_bytes (%u) for file id==%u', __CLASS__, intval($filesize), $this->max_image_bytes, $file->getID()));
115 } elseif ($filesize > common_config('attachments', 'file_quota')) {
116 // file too big according to site configuration
117 common_debug(sprintf('%s: Skipping remote media because content length (%u) is larger than file_quota (%u) for file id==%u', __CLASS__, intval($filesize), common_config('attachments', 'file_quota'), $file->getID()));
121 // Then we download the file to memory and test whether it's actually an image file
122 common_debug(sprintf('Downloading remote file id==%u (should be size %u) with effective URL: %s', $file->getID(), $filesize, _ve($remoteUrl)));
123 $imgData = HTTPClient::quickGet($remoteUrl);
124 } catch (HTTP_Request2_ConnectionException $e) {
125 common_log(LOG_ERR, __CLASS__.': '._ve(get_class($e)).' on URL: '._ve($file->getUrl()).' threw exception: '.$e->getMessage());
128 $info = @getimagesizefromstring($imgData);
129 if ($info === false) {
130 throw new UnsupportedMediaException(_('Remote file format was not identified as an image.'), $remoteUrl);
131 } elseif (!$info[0] || !$info[1]) {
132 throw new UnsupportedMediaException(_('Image file had impossible geometry (0 width or height)'));
135 $filehash = hash(File::FILEHASH_ALG, $imgData);
137 // Exception will be thrown before $file is set to anything, so old $file value will be kept
138 $file = File::getByHash($filehash);
140 //FIXME: Add some code so we don't have to store duplicate File rows for same hash files.
141 } catch (NoResultException $e) {
142 $filename = $filehash . '.' . common_supported_mime_to_ext($info['mime']);
143 $fullpath = File::path($filename);
145 // Write the file to disk if it doesn't exist yet. Throw Exception on failure.
146 if (!file_exists($fullpath) && file_put_contents($fullpath, $imgData) === false) {
147 throw new ServerException(_('Could not write downloaded file to disk.'));
150 // Updated our database for the file record
151 $orig = clone($file);
152 $file->filehash = $filehash;
153 $file->filename = $filename;
154 $file->width = $info[0]; // array indexes documented on php.net:
155 $file->height = $info[1]; // https://php.net/manual/en/function.getimagesize.php
156 // Throws exception on failure.
157 $file->updateWithKeys($orig);
159 // Get rid of the file from memory
162 $imgPath = $file->getPath();
168 * @return boolean true if given url passes blacklist check
170 protected function checkBlackList($url)
172 if (!$this->check_blacklist) {
175 $host = parse_url($url, PHP_URL_HOST);
176 foreach ($this->domain_blacklist as $regex => $provider) {
177 if (preg_match("/$regex/", $host)) {
186 * @return boolean true if given url passes whitelist check
188 protected function checkWhiteList($url)
190 if (!$this->check_whitelist) {
193 $host = parse_url($url, PHP_URL_HOST);
194 foreach ($this->domain_whitelist as $regex => $provider) {
195 if (preg_match("/$regex/", $host)) {
203 public function onPluginVersion(array &$versions)
205 $versions[] = array('name' => 'StoreRemoteMedia',
206 'version' => self::PLUGIN_VERSION,
207 'author' => 'Mikael Nordfeldth',
208 'homepage' => 'https://gnu.io/',
210 // TRANS: Plugin description.
211 _m('Plugin for downloading remotely attached files to local server.'));