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- <?php
- defined('GNUSOCIAL') || die();
- class File extends Managed_DataObject
- {
- public $__table = 'file';
- public $id;
- public $urlhash;
- public $url;
- public $filehash;
- public $mimetype;
- public $size;
- public $title;
- public $date;
- public $protected;
- public $filename;
- public $width;
- public $height;
- public $modified;
- const URLHASH_ALG = 'sha256';
- const FILEHASH_ALG = 'sha256';
- public static function schemaDef()
- {
- return array(
- 'fields' => array(
- 'id' => array('type' => 'serial', 'not null' => true),
- 'urlhash' => array('type' => 'varchar', 'length' => 64, 'description' => 'sha256 of destination URL (url field)'),
- 'url' => array('type' => 'text', 'description' => 'destination URL after following possible redirections'),
- 'filehash' => array('type' => 'varchar', 'length' => 64, 'not null' => false, 'description' => 'sha256 of the file contents, only for locally stored files of course'),
- 'mimetype' => array('type' => 'varchar', 'length' => 50, 'description' => 'mime type of resource'),
- 'size' => array('type' => 'int', 'description' => 'size of resource when available'),
- 'title' => array('type' => 'text', 'description' => 'title of resource when available'),
- 'date' => array('type' => 'int', 'description' => 'date of resource according to http query'),
- 'protected' => array('type' => 'int', 'description' => 'true when URL is private (needs login)'),
- 'filename' => array('type' => 'text', 'description' => 'if file is stored locally (too) this is the filename'),
- 'width' => array('type' => 'int', 'description' => 'width in pixels, if it can be described as such and data is available'),
- 'height' => array('type' => 'int', 'description' => 'height in pixels, if it can be described as such and data is available'),
- 'modified' => array('type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified'),
- ),
- 'primary key' => array('id'),
- 'unique keys' => array(
- 'file_urlhash_key' => array('urlhash'),
- ),
- 'indexes' => array(
- 'file_filehash_idx' => array('filehash'),
- ),
- );
- }
- public static function isProtected($url)
- {
- $protected_urls_exps = array(
- 'https://www.facebook.com/login.php',
- common_path('main/login')
- );
- foreach ($protected_urls_exps as $protected_url_exp) {
- if (preg_match('!^'.preg_quote($protected_url_exp).'(.*)$!i', $url) === 1) {
- return true;
- }
- }
- return false;
- }
-
- public static function saveNew(array $redir_data, $given_url)
- {
- $file = null;
- try {
-
-
- $file = File::getByUrl($given_url);
- return $file;
- } catch (NoResultException $e) {
-
- }
-
- $uh = parse_url($given_url, PHP_URL_HOST);
- $up = parse_url($given_url, PHP_URL_PATH);
- if ($uh == common_config('site', 'server') || $uh == common_config('attachments', 'server')) {
- unset($uh);
- $r = Router::get();
-
- try {
- $args = $r->map(mb_substr($up, 1));
- if ($args['action'] === 'attachment' ||
- $args['action'] === 'attachment_view' ||
- $args['action'] === 'attachment_download' ||
- $args['action'] === 'attachment_thumbnail' ) {
- try {
- if (array_key_exists('attachment', $args)) {
- return File::getByID((int)$args['attachment']);
- } elseif (array_key_exists('filehash', $args)) {
- $file = File::getByHash($args['filehash']);
- $file->fetch();
- return $file;
- }
- } catch (NoResultException $e) {
-
- }
- }
- } catch (Exception $e) {
-
-
-
-
-
-
-
-
-
-
- }
- }
- $file = new File;
- $file->url = $given_url;
- if (!empty($redir_data['protected'])) {
- $file->protected = $redir_data['protected'];
- }
- if (!empty($redir_data['title'])) {
- $file->title = $redir_data['title'];
- }
- if (!empty($redir_data['type'])) {
- $file->mimetype = $redir_data['type'];
- }
- if (!empty($redir_data['size'])) {
- $file->size = (int)$redir_data['size'];
- }
- if (isset($redir_data['time']) && $redir_data['time'] > 0) {
- $file->date = (int)$redir_data['time'];
- }
- $file->saveFile();
- return $file;
- }
- public function saveFile()
- {
- $this->urlhash = is_null($this->url) ? null : self::hashurl($this->url);
- if (!Event::handle('StartFileSaveNew', array(&$this))) {
- throw new ServerException('File not saved due to an aborted StartFileSaveNew event.');
- }
- $this->id = $this->insert();
- if ($this->id === false) {
- throw new ServerException('File/URL metadata could not be saved to the database.');
- }
- Event::handle('EndFileSaveNew', array($this));
- }
-
- public static function processNew($given_url, ?Notice $notice=null, bool $followRedirects=true)
- {
- if (empty($given_url)) {
- throw new ServerException('No given URL to process');
- }
- $given_url = File_redirection::_canonUrl($given_url);
- if (empty($given_url)) {
- throw new ServerException('No canonical URL from given URL to process');
- }
- $redir = File_redirection::where($given_url);
- try {
- $file = $redir->getFile();
- } catch (EmptyPkeyValueException $e) {
- common_log(LOG_ERR, 'File_redirection::where gave object with empty file_id for given_url '._ve($given_url));
- throw new ServerException('URL processing failed without new File object');
- } catch (NoResultException $e) {
-
- common_log(LOG_ERR, 'File_redirection after discovery could still not return a File object.');
- throw new ServerException('URL processing failed without new File object');
- }
- if ($notice instanceof Notice) {
- File_to_post::processNew($file, $notice);
- }
- return $file;
- }
- public static function respectsQuota(Profile $scoped, $fileSize)
- {
- if ($fileSize > common_config('attachments', 'file_quota')) {
-
-
-
- $fileSizeText = sprintf(_m('%1$d byte', '%1$d bytes', $fileSize), $fileSize);
- $fileQuota = common_config('attachments', 'file_quota');
-
-
-
-
- throw new ClientException(
- sprintf(
- _m(
- 'No file may be larger than %1$d byte and the file you sent was %2$s. Try to upload a smaller version.',
- 'No file may be larger than %1$d bytes and the file you sent was %2$s. Try to upload a smaller version.',
- $fileQuota
- ),
- $fileQuota,
- $fileSizeText
- )
- );
- }
- $file = new File;
- $query = "SELECT sum(size) AS total
- FROM file
- INNER JOIN file_to_post
- ON file_to_post.file_id = file.id
- INNER JOIN notice
- ON file_to_post.post_id = notice.id
- WHERE profile_id = {$scoped->id} AND
- filename IS NULL AND
- file.url IS NOT NULL";
- $file->query($query);
- $file->fetch();
- $total = $file->total + $fileSize;
- if ($total > common_config('attachments', 'user_quota')) {
-
-
- throw new ClientException(
- sprintf(
- _m(
- 'A file this large would exceed your user quota of %d byte.',
- 'A file this large would exceed your user quota of %d bytes.',
- common_config('attachments', 'user_quota')
- ),
- common_config('attachments', 'user_quota')
- )
- );
- }
- $query .= ' AND EXTRACT(MONTH FROM file.modified) = EXTRACT(MONTH FROM CURRENT_DATE)'
- . ' AND EXTRACT(YEAR FROM file.modified) = EXTRACT(YEAR FROM CURRENT_DATE)';
- $file->query($query);
- $file->fetch();
- $total = $file->total + $fileSize;
- if ($total > common_config('attachments', 'monthly_quota')) {
-
-
- throw new ClientException(
- sprintf(
- _m(
- 'A file this large would exceed your monthly quota of %d byte.',
- 'A file this large would exceed your monthly quota of %d bytes.',
- common_config('attachments', 'monthly_quota')
- ),
- common_config('attachments', 'monthly_quota')
- )
- );
- }
- return true;
- }
- public function getFilename()
- {
- return self::tryFilename($this->filename);
- }
- public function getSize(): int
- {
- return (int)$this->size;
- }
-
- public static function filename(Profile $profile, $origname, $mimetype)
- {
- $ext = self::guessMimeExtension($mimetype, $origname);
-
- $origname = basename($origname, ".$ext");
- if (class_exists('Normalizer')) {
-
-
- $origname = Normalizer::normalize($origname, Normalizer::FORM_KC);
- }
- $origname = preg_replace('/[^A-Za-z0-9\.\_]/', '_', $origname);
- $nickname = $profile->getNickname();
- $datestamp = strftime('%Y%m%d', time());
- do {
-
- $random = strtolower(common_confirmation_code(16));
- $filename = "$nickname-$datestamp-$origname-$random.$ext";
- } while (file_exists(self::path($filename)));
- return $filename;
- }
-
- public static function getSafeExtension(string $filename)
- {
- if (preg_match('/^.+?\.([A-Za-z0-9]+)$/', $filename, $matches) === 1) {
-
- $ext = mb_strtolower($matches[1]);
- $blacklist = common_config('attachments', 'extblacklist');
-
-
- if (array_key_exists($ext, $blacklist)) {
- if (!is_string($blacklist[$ext])) {
-
- return false;
- }
-
- return $blacklist[$ext];
- } else {
-
- return $ext;
- }
- } else {
-
- return null;
- }
- }
-
- public static function guessMimeExtension($mimetype, $filename=null)
- {
- try {
-
- $ext = common_supported_mime_to_ext($mimetype);
-
- return $ext;
- } catch (UnknownMimeExtensionException $e) {
-
-
-
- if (!is_null($filename)) {
- $ext = self::getSafeExtension($filename);
- if ($ext === false) {
-
- throw new ClientException(_m('Blacklisted file extension.'));
- } else {
- return $ext;
- }
- }
- } catch (Exception $e) {
- common_log(LOG_INFO, 'Problem when figuring out extension for mimetype: '._ve($e));
- }
-
-
- $matches = array();
-
- if (!preg_match('/[\/+-\.]([a-z0-9]+)/', mb_strtolower($mimetype), $matches)) {
- throw new Exception("Malformed mimetype: {$mimetype}");
- }
- return mb_strtolower($matches[1]);
- }
-
- public static function validFilename($filename)
- {
- return preg_match('/^[A-Za-z0-9._-]+$/', $filename);
- }
-
- public static function tryFilename($filename): string
- {
- if (!self::validFilename($filename)) {
- throw new InvalidFilenameException($filename);
- }
-
- return $filename;
- }
-
- public static function path($filename, ?string $dir = null, bool $test_filename = true)
- {
- if ($test_filename) {
- self::tryFilename($filename);
- }
- $dir = $dir ?? common_config('attachments', 'dir');
- if (!in_array($dir[mb_strlen($dir)-1], ['/', '\\'])) {
- $dir .= DIRECTORY_SEPARATOR;
- }
- return $dir . $filename;
- }
-
- public static function url($filename)
- {
- self::tryFilename($filename);
- if (common_config('site', 'private')) {
- return common_local_url(
- 'getfile',
- array('filename' => $filename)
- );
- }
- if (GNUsocial::useHTTPS()) {
- $sslserver = common_config('attachments', 'sslserver');
- if (empty($sslserver)) {
-
-
- if (is_string(common_config('site', 'sslserver')) &&
- mb_strlen(common_config('site', 'sslserver')) > 0) {
- $server = common_config('site', 'sslserver');
- } elseif (common_config('site', 'server')) {
- $server = common_config('site', 'server');
- }
- $path = common_config('site', 'path') . '/file/';
- } else {
- $server = $sslserver;
- $path = common_config('attachments', 'sslpath');
- if (empty($path)) {
- $path = common_config('attachments', 'path');
- }
- }
- $protocol = 'https';
- } else {
- $path = common_config('attachments', 'path');
- $server = common_config('attachments', 'server');
- if (empty($server)) {
- $server = common_config('site', 'server');
- }
- $ssl = common_config('attachments', 'ssl');
- $protocol = ($ssl) ? 'https' : 'http';
- }
- if ($path[strlen($path)-1] != '/') {
- $path .= '/';
- }
- if ($path[0] != '/') {
- $path = '/'.$path;
- }
- return $protocol.'://'.$server.$path.$filename;
- }
- public static $_enclosures = array();
- public function getEnclosure()
- {
- if (isset(self::$_enclosures[$this->getID()])) {
- return self::$_enclosures[$this->getID()];
- }
- $enclosure = (object) array();
- foreach (array('title', 'url', 'date', 'modified', 'size', 'mimetype', 'width', 'height') as $key) {
- if ($this->$key !== '') {
- $enclosure->$key = $this->$key;
- }
- }
- $needMoreMetadataMimetypes = array(null, 'application/xhtml+xml', 'text/html');
- if (isset($enclosure->url) && in_array(common_bare_mime($enclosure->mimetype), $needMoreMetadataMimetypes)) {
-
-
- Event::handle('FileEnclosureMetadata', array($this, &$enclosure));
- }
- if (empty($enclosure->mimetype)) {
-
-
-
- throw new ServerException('Unknown enclosure mimetype, not enough metadata');
- }
- self::$_enclosures[$this->getID()] = $enclosure;
- return $enclosure;
- }
- public function hasThumbnail()
- {
- try {
- $this->getThumbnail();
- } catch (Exception $e) {
- return false;
- }
- return true;
- }
-
- public function getThumbnail (?int $width = null, ?int $height = null, bool $crop = false, bool $force_still = true, ?bool $upscale = null): File_thumbnail
- {
- return File_thumbnail::fromFileObject($this, $width, $height, $crop, $force_still, $upscale);
- }
- public function getPath()
- {
- $filepath = self::path($this->filename);
- if (!file_exists($filepath)) {
- throw new FileNotFoundException($filepath);
- }
- return $filepath;
- }
-
- public function getFileOrThumbnailPath(?File_thumbnail $thumbnail = null): string
- {
- if (!empty($thumbnail)) {
- return $thumbnail->getPath();
- }
- if (!empty($this->filename)) {
- $filepath = self::path($this->filename);
- if (file_exists($filepath)) {
- return $filepath;
- } else {
- throw new FileNotFoundException($filepath);
- }
- } else {
- try {
- return File_thumbnail::byFile($this, true)->getPath();
- } catch (NoResultException $e) {
-
- throw new FileNotStoredLocallyException($this);
- }
- }
- }
-
- public function getFileOrThumbnailMimetype(?File_thumbnail $thumbnail = null) : string
- {
- if (!empty($thumbnail)) {
- $filepath = $thumbnail->getPath();
- } elseif (!empty($this->filename)) {
- return $this->mimetype;
- } else {
- $filepath = File_thumbnail::byFile($this, true)->getPath();
- }
- $info = @getimagesize($filepath);
- if ($info !== false) {
- return $info['mime'];
- } else {
- throw new UnsupportedMediaException(_m("Thumbnail is not an image."));
- }
- }
-
- public function getFileOrThumbnailSize(?File_thumbnail $thumbnail = null) : int
- {
- if (!empty($thumbnail)) {
- return filesize($thumbnail->getPath());
- } elseif (!empty($this->filename)) {
- return $this->getSize();
- } else {
- return filesize(File_thumbnail::byFile($this)->getPath());
- }
- }
- public function getAttachmentUrl()
- {
- return common_local_url('attachment', array('attachment'=>$this->getID()));
- }
- public function getAttachmentDownloadUrl()
- {
- return common_local_url('attachment_download', ['filehash' => $this->filehash]);
- }
- public function getAttachmentViewUrl()
- {
- return common_local_url('attachment_view', ['filehash' => $this->filehash]);
- }
-
- public function getUrl(?bool $use_local=null): ?string
- {
- if ($use_local !== false) {
- if (empty($this->url)) {
-
- return $this->getAttachmentViewUrl();
- }
- if ($use_local) {
-
- throw new FileNotStoredLocallyException($this);
- }
- }
-
- return $this->url;
- }
- public static function getByUrl($url)
- {
- $file = new File();
- $file->urlhash = self::hashurl($url);
- if (!$file->find(true)) {
- throw new NoResultException($file);
- }
- return $file;
- }
-
- public static function getByHash($hashstr)
- {
- $file = new File();
- $file->filehash = strtolower($hashstr);
- if (!$file->find()) {
- throw new NoResultException($file);
- }
- return $file;
- }
- public function updateUrl($url)
- {
- $file = File::getKV('urlhash', self::hashurl($url));
- if ($file instanceof File) {
- throw new ServerException('URL already exists in DB');
- }
- $result = $this->query(sprintf(
- <<<'END'
- UPDATE %1$s
- SET urlhash = %2$s, url = %3$s, modified = CURRENT_TIMESTAMP
- WHERE urlhash = %4$s;
- END,
- $this->tableName(),
- $this->_quote((string)self::hashurl($url)),
- $this->_quote((string)$url),
- $this->_quote((string)$this->urlhash)
- ));
- if ($result === false) {
- common_log_db_error($this, 'UPDATE', __FILE__);
- throw new ServerException("Could not UPDATE {$this->tableName()}.url");
- }
- return $result;
- }
- /**
- * Blow the cache of notices that link to this URL
- *
- * @param boolean $last Whether to blow the "last" cache too
- *
- * @return void
- */
- public function blowCache($last=false)
- {
- self::blow('file:notice-ids:%s', $this->id);
- if ($last) {
- self::blow('file:notice-ids:%s;last', $this->id);
- }
- self::blow('file:notice-count:%d', $this->id);
- }
- /**
- * Stream of notices linking to this URL
- *
- * @param integer $offset Offset to show; default is 0
- * @param integer $limit Limit of notices to show
- * @param integer $since_id Since this notice
- * @param integer $max_id Before this notice
- *
- * @return array ids of notices that link to this file
- */
- public function stream($offset=0, $limit=NOTICES_PER_PAGE, $since_id=0, $max_id=0)
- {
- // FIXME: Try to get the Profile::current() here in some other way to avoid mixing
- // the current session user with possibly background/queue processing.
- $stream = new FileNoticeStream($this, Profile::current());
- return $stream->getNotices($offset, $limit, $since_id, $max_id);
- }
- public function noticeCount()
- {
- $cacheKey = sprintf('file:notice-count:%d', $this->id);
- $count = self::cacheGet($cacheKey);
- if ($count === false) {
- $f2p = new File_to_post();
- $f2p->file_id = $this->id;
- $count = $f2p->count();
- self::cacheSet($cacheKey, $count);
- }
- return $count;
- }
- public function isLocal()
- {
- return empty($this->url) && !empty($this->filename);
- }
- public function unlink() {
- // Delete the file, if it exists locally
- if (!empty($this->filename) && file_exists(self::path($this->filename))) {
- $deleted = @unlink(self::path($this->filename));
- if (!$deleted) {
- common_log(LOG_ERR, sprintf('Could not unlink existing file: "%s"', self::path($this->filename)));
- }
- }
- }
- public function delete($useWhere=false)
- {
- // Delete the file, if it exists locally
- $this->unlink();
- // Clear out related things in the database and filesystem, such as thumbnails
- $related = [
- 'File_redirection',
- 'File_thumbnail',
- 'File_to_post'
- ];
- Event::handle('FileDeleteRelated', [$this, &$related]);
- foreach ($related as $cls) {
- $inst = new $cls();
- $inst->file_id = $this->id;
- if ($inst->find()) {
- while ($inst->fetch()) {
- $inst->delete();
- }
- }
- }
- // And finally remove the entry from the database
- return parent::delete($useWhere);
- }
- public function getTitle()
- {
- $title = $this->title ?: MediaFile::getDisplayName($this);
- return $title ?: null;
- }
- public function setTitle($title)
- {
- $orig = clone($this);
- $this->title = mb_strlen($title) > 0 ? $title : null;
- return $this->update($orig);
- }
- public static function hashurl($url)
- {
- if (empty($url)) {
- throw new Exception('No URL provided to hash algorithm.');
- }
- return hash(self::URLHASH_ALG, $url);
- }
- public static function beforeSchemaUpdate()
- {
- $table = strtolower(get_called_class());
- $schema = Schema::get();
- $schemadef = $schema->getTableDef($table);
- // 2015-02-19 We have to upgrade our table definitions to have the urlhash field populated
- if (isset($schemadef['fields']['urlhash']) && isset($schemadef['unique keys']['file_urlhash_key'])) {
- // We already have the urlhash field, so no need to migrate it.
- return;
- }
- echo "\nFound old $table table, upgrading it to contain 'urlhash' field...";
- $file = new File();
- $file->query(sprintf(
- 'SELECT id, LEFT(url, 191) AS shortenedurl, COUNT(*) FROM %1$s ' .
- 'WHERE LENGTH(url) > 191 GROUP BY id, shortenedurl HAVING COUNT(*) > 1',
- common_database_tablename($table)
- ));
- print "\nFound {$file->N} URLs with too long entries in file table\n";
- while ($file->fetch()) {
- // We've got a URL that is too long for our future file table
- // so we'll cut it. We could save the original URL, but there is
- // no guarantee it is complete anyway since the previous max was 255 chars.
- $dupfile = new File();
- // First we find file entries that would be duplicates of this when shortened
- // ... and we'll just throw the dupes out the window for now! It's already so borken.
- $dupfile->query(sprintf('SELECT * FROM file WHERE LEFT(url, 191) = %1$s', $dupfile->_quote($file->shortenedurl)));
- // Leave one of the URLs in the database by using ->find(true) (fetches first entry)
- if ($dupfile->find(true)) {
- print "\nShortening url entry for $table id: {$file->id} [";
- $orig = clone($dupfile);
- $origurl = $dupfile->url; // save for logging purposes
- $dupfile->url = $file->shortenedurl; // make sure it's only 191 chars from now on
- $dupfile->update($orig);
- print "\nDeleting duplicate entries of too long URL on $table id: {$file->id} [";
- // only start deleting with this fetch.
- while ($dupfile->fetch()) {
- common_log(LOG_INFO, sprintf('Deleting duplicate File entry of %1$d: %2$d (original URL: %3$s collides with these first 191 characters: %4$s', $dupfile->id, $file->id, $origurl, $file->shortenedurl));
- print ".";
- $dupfile->delete();
- }
- print "]\n";
- } else {
- print "\nWarning! URL suddenly disappeared from database: {$file->url}\n";
- }
- }
- echo "...and now all the non-duplicates which are longer than 191 characters...\n";
- $file->query('UPDATE file SET url = LEFT(url, 191) WHERE LENGTH(url) > 191');
- echo "\n...now running hacky pre-schemaupdate change for $table:";
- // We have to create a urlhash that is _not_ the primary key,
- // transfer data and THEN run checkSchema
- $schemadef['fields']['urlhash'] = array(
- 'type' => 'varchar',
- 'length' => 64,
- 'not null' => false, // this is because when adding column, all entries will _be_ NULL!
- 'description' => 'sha256 of destination URL (url field)',
- );
- $schemadef['fields']['url'] = array(
- 'type' => 'text',
- 'description' => 'destination URL after following possible redirections',
- );
- unset($schemadef['unique keys']);
- $schema->ensureTable($table, $schemadef);
- echo "DONE.\n";
- $classname = ucfirst($table);
- $tablefix = new $classname;
- // urlhash is hash('sha256', $url) in the File table
- echo "Updating urlhash fields in $table table...";
- switch (common_config('db', 'type')) {
- case 'pgsql':
- $url_sha256 = 'encode(sha256(CAST("url" AS bytea)), \'hex\')';
- break;
- case 'mysql':
- $url_sha256 = 'sha2(`url`, 256)';
- break;
- default:
- throw new ServerException('Unknown DB type selected.');
- }
- $tablefix->query(sprintf(
- 'UPDATE %1$s SET urlhash = %2$s, modified = CURRENT_TIMESTAMP;',
- $tablefix->escapedTableName(),
- $url_sha256
- ));
- echo "DONE.\n";
- echo "Resuming core schema upgrade...";
- }
- }
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