diff options
Diffstat (limited to 'include/RedDAV/RedDirectory.php')
| -rw-r--r-- | include/RedDAV/RedDirectory.php | 461 |
1 files changed, 461 insertions, 0 deletions
diff --git a/include/RedDAV/RedDirectory.php b/include/RedDAV/RedDirectory.php new file mode 100644 index 000000000..72b0fe789 --- /dev/null +++ b/include/RedDAV/RedDirectory.php @@ -0,0 +1,461 @@ +<?php + +namespace RedMatrix\RedDAV; + +use Sabre\DAV; + +/** + * @brief RedDirectory class. + * + * A class that represents a directory. + * + * @extends \Sabre\DAV\Node + * @implements \Sabre\DAV\ICollection + * @implements \Sabre\DAV\IQuota + * + * @link http://github.com/friendica/red + * @license http://opensource.org/licenses/mit-license.php The MIT License (MIT) + */ +class RedDirectory extends DAV\Node implements DAV\ICollection, DAV\IQuota { + + /** + * @brief The path inside /cloud + * + * @var string + */ + private $red_path; + private $folder_hash; + /** + * @brief The full path as seen in the browser. + * /cloud + $red_path + * @todo I think this is not used anywhere, we always strip '/cloud' and only use it in debug + * @var string + */ + private $ext_path; + private $root_dir = ''; + private $auth; + /** + * @brief The real path on the filesystem. + * The actual path in store/ with the hashed names. + * + * @var string + */ + private $os_path = ''; + + /** + * @brief Sets up the directory node, expects a full path. + * + * @param string $ext_path a full path + * @param RedBasicAuth &$auth_plugin + */ + public function __construct($ext_path, &$auth_plugin) { + logger('RedDirectory::__construct() ' . $ext_path, LOGGER_DATA); + $this->ext_path = $ext_path; + // remove "/cloud" from the beginning of the path + $this->red_path = ((strpos($ext_path, '/cloud') === 0) ? substr($ext_path, 6) : $ext_path); + if (! $this->red_path) { + $this->red_path = '/'; + } + $this->auth = $auth_plugin; + $this->folder_hash = ''; + $this->getDir(); + + if ($this->auth->browser) { + $this->auth->browser->set_writeable(); + } + } + + private function log() { + logger('RedDirectory::log() ext_path ' . $this->ext_path, LOGGER_DATA); + logger('RedDirectory::log() os_path ' . $this->os_path, LOGGER_DATA); + logger('RedDirectory::log() red_path ' . $this->red_path, LOGGER_DATA); + } + + /** + * @brief Returns an array with all the child nodes. + * + * @throws DAV\Exception\Forbidden + * @return array DAV\INode[] + */ + public function getChildren() { + logger('RedDirectory::getChildren() called for ' . $this->ext_path, LOGGER_DATA); + $this->log(); + + if (get_config('system', 'block_public') && (! $this->auth->channel_id) && (! $this->auth->observer)) { + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + if (($this->auth->owner_id) && (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'view_storage'))) { + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + $contents = RedCollectionData($this->red_path, $this->auth); + return $contents; + } + + /** + * @brief Returns a child by name. + * + * + * @throw DAV\Exception\Forbidden + * @throw DAV\Exception\NotFound + * @param string $name + */ + public function getChild($name) { + logger('RedDirectory::getChild(): ' . $name, LOGGER_DATA); + + if (get_config('system', 'block_public') && (! $this->auth->channel_id) && (! $this->auth->observer)) { + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + if (($this->auth->owner_id) && (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'view_storage'))) { + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + if ($this->red_path === '/' && $name === 'cloud') { + return new RedDirectory('/cloud', $this->auth); + } + + $x = RedFileData($this->ext_path . '/' . $name, $this->auth); + if ($x) { + return $x; + } + + throw new DAV\Exception\NotFound('The file with name: ' . $name . ' could not be found.'); + } + + /** + * @brief Returns the name of the directory. + * + * @return string + */ + public function getName() { + logger('RedDirectory::getName() returns: ' . basename($this->red_path), LOGGER_DATA); + return (basename($this->red_path)); + } + + /** + * @brief Renames the directory. + * + * @todo handle duplicate directory name + * + * @throw DAV\Exception\Forbidden + * @param string $name The new name of the directory. + * @return void + */ + public function setName($name) { + logger('RedDirectory::setName(): ' . basename($this->red_path) . ' -> ' . $name, LOGGER_DATA); + + if ((! $name) || (! $this->auth->owner_id)) { + logger('RedDirectory::setName(): permission denied'); + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + if (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'write_storage')) { + logger('RedDirectory::setName(): permission denied'); + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + list($parent_path, ) = DAV\URLUtil::splitPath($this->red_path); + $new_path = $parent_path . '/' . $name; + + $r = q("UPDATE attach SET filename = '%s' WHERE hash = '%s' AND uid = %d LIMIT 1", + dbesc($name), + dbesc($this->folder_hash), + intval($this->auth->owner_id) + ); + + $this->red_path = $new_path; + } + + /** + * @brief Creates a new file in the directory. + * + * Data will either be supplied as a stream resource, or in certain cases + * as a string. Keep in mind that you may have to support either. + * + * After successful creation of the file, you may choose to return the ETag + * of the new file here. + * + * @throws DAV\Exception\Forbidden + * @param string $name Name of the file + * @param resource|string $data Initial payload + * @return null|string ETag + */ + public function createFile($name, $data = null) { + logger('RedDirectory::createFile(): ' . $name, LOGGER_DATA); + + if (! $this->auth->owner_id) { + logger('RedDirectory::createFile(): permission denied'); + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + if (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'write_storage')) { + logger('RedDirectory::createFile(): permission denied'); + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + $mimetype = z_mime_content_type($name); + + $c = q("SELECT * FROM channel WHERE channel_id = %d AND NOT (channel_pageflags & %d) LIMIT 1", + intval($this->auth->owner_id), + intval(PAGE_REMOVED) + ); + + if (! $c) { + logger('RedDirectory::createFile(): no channel'); + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + $filesize = 0; + $hash = random_string(); + + $r = q("INSERT INTO attach ( aid, uid, hash, creator, filename, folder, flags, filetype, filesize, revision, data, created, edited, allow_cid, allow_gid, deny_cid, deny_gid ) + VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s' ) ", + intval($c[0]['channel_account_id']), + intval($c[0]['channel_id']), + dbesc($hash), + dbesc($this->auth->observer), + dbesc($name), + dbesc($this->folder_hash), + dbesc(ATTACH_FLAG_OS), + dbesc($mimetype), + intval($filesize), + intval(0), + dbesc($this->os_path . '/' . $hash), + dbesc(datetime_convert()), + dbesc(datetime_convert()), + dbesc($c[0]['channel_allow_cid']), + dbesc($c[0]['channel_allow_gid']), + dbesc($c[0]['channel_deny_cid']), + dbesc($c[0]['channel_deny_gid']) + ); + + $f = 'store/' . $this->auth->owner_nick . '/' . (($this->os_path) ? $this->os_path . '/' : '') . $hash; + + // returns the number of bytes that were written to the file, or FALSE on failure + $size = file_put_contents($f, $data); + // delete attach entry if file_put_contents() failed + if ($size === false) { + logger('RedDirectory::createFile(): file_put_contents() failed for ' . $name, LOGGER_DEBUG); + attach_delete($c[0]['channel_id'], $hash); + return; + } + + // returns now + $edited = datetime_convert(); + + // updates entry with filesize and timestamp + $d = q("UPDATE attach SET filesize = '%s', edited = '%s' WHERE hash = '%s' AND uid = %d LIMIT 1", + dbesc($size), + dbesc($edited), + dbesc($hash), + intval($c[0]['channel_id']) + ); + + // update the folder's lastmodified timestamp + $e = q("UPDATE attach SET edited = '%s' WHERE hash = '%s' AND uid = %d LIMIT 1", + dbesc($edited), + dbesc($this->folder_hash), + intval($c[0]['channel_id']) + ); + + $maxfilesize = get_config('system', 'maxfilesize'); + if (($maxfilesize) && ($size > $maxfilesize)) { + attach_delete($c[0]['channel_id'], $hash); + return; + } + + // check against service class quota + $limit = service_class_fetch($c[0]['channel_id'], 'attach_upload_limit'); + if ($limit !== false) { + $x = q("SELECT SUM(filesize) AS total FROM attach WHERE aid = %d ", + intval($c[0]['channel_account_id']) + ); + if (($x) && ($x[0]['total'] + $size > $limit)) { + logger('reddav: service class limit exceeded for ' . $c[0]['channel_name'] . ' total usage is ' . $x[0]['total'] . ' limit is ' . $limit); + attach_delete($c[0]['channel_id'], $hash); + return; + } + } + } + + /** + * @brief Creates a new subdirectory. + * + * @param string $name the directory to create + * @return void + */ + public function createDirectory($name) { + logger('RedDirectory::createDirectory(): ' . $name, LOGGER_DEBUG); + + if ((! $this->auth->owner_id) || (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'write_storage'))) { + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + $r = q("SELECT * FROM channel WHERE channel_id = %d AND NOT (channel_pageflags & %d) LIMIT 1", + intval($this->auth->owner_id), + intval(PAGE_REMOVED) + ); + + if ($r) { + $result = attach_mkdir($r[0], $this->auth->observer, array('filename' => $name, 'folder' => $this->folder_hash)); + if (! $result['success']) { + logger('RedDirectory::createDirectory(): ' . print_r($result, true), LOGGER_DEBUG); + } + } + } + + /** + * @brief Checks if a child exists. + * + * @param string $name + * @return boolean + */ + public function childExists($name) { + // On /cloud we show a list of available channels. + // @todo what happens if no channels are available? + if ($this->red_path === '/' && $name === 'cloud') { + logger('RedDirectory::childExists() /cloud: true', LOGGER_DATA); + return true; + } + + $x = RedFileData($this->ext_path . '/' . $name, $this->auth, true); + logger('RedFileData returns: ' . print_r($x, true), LOGGER_DATA); + if ($x) + return true; + return false; + } + + /** + * @todo add description of what this function does. + * + * @throw DAV\Exception\NotFound + * @return void + */ + function getDir() { + logger('RedDirectory::getDir(): ' . $this->ext_path, LOGGER_DEBUG); + $this->auth->log(); + + $file = $this->ext_path; + + $x = strpos($file, '/cloud'); + if ($x === false) + return; + if ($x === 0) { + $file = substr($file, 6); + } + + if ((! $file) || ($file === '/')) { + return; + } + + $file = trim($file, '/'); + $path_arr = explode('/', $file); + + if (! $path_arr) + return; + + logger('RedDirectory::getDir(): path: ' . print_r($path_arr, true), LOGGER_DATA); + + $channel_name = $path_arr[0]; + + $r = q("SELECT channel_id FROM channel WHERE channel_address = '%s' AND NOT ( channel_pageflags & %d ) LIMIT 1", + dbesc($channel_name), + intval(PAGE_REMOVED) + ); + + if (! $r) { + throw new DAV\Exception\NotFound('The file with name: ' . $channel_name . ' could not be found.'); + return; + } + + $channel_id = $r[0]['channel_id']; + $this->auth->owner_id = $channel_id; + $this->auth->owner_nick = $channel_name; + + $path = '/' . $channel_name; + $folder = ''; + $os_path = ''; + + for ($x = 1; $x < count($path_arr); $x++) { + $r = q("select id, hash, filename, flags from attach where folder = '%s' and filename = '%s' and uid = %d and (flags & %d)", + dbesc($folder), + dbesc($path_arr[$x]), + intval($channel_id), + intval(ATTACH_FLAG_DIR) + ); + + if ($r && ( $r[0]['flags'] & ATTACH_FLAG_DIR)) { + $folder = $r[0]['hash']; + if (strlen($os_path)) + $os_path .= '/'; + $os_path .= $folder; + + $path = $path . '/' . $r[0]['filename']; + } + } + $this->folder_hash = $folder; + $this->os_path = $os_path; + return; + } + + /** + * @brief Returns the last modification time for the directory, as a UNIX + * timestamp. + * + * It looks for the last edited file in the folder. If it is an empty folder + * it returns the lastmodified time of the folder itself, to prevent zero + * timestamps. + * + * @return int last modification time in UNIX timestamp + */ + public function getLastModified() { + $r = q("SELECT edited FROM attach WHERE folder = '%s' AND uid = %d ORDER BY edited DESC LIMIT 1", + dbesc($this->folder_hash), + intval($this->auth->owner_id) + ); + if (! $r) { + $r = q("SELECT edited FROM attach WHERE hash = '%s' AND uid = %d LIMIT 1", + dbesc($this->folder_hash), + intval($this->auth->owner_id) + ); + if (! $r) + return ''; + } + return datetime_convert('UTC', 'UTC', $r[0]['edited'], 'U'); + } + + /** + * @brief Return quota usage. + * + * Do guests relly see the used/free values from filesystem of the complete store directory? + * + * @return array with used and free values in bytes. + */ + public function getQuotaInfo() { + // values from the filesystem of the complete <i>store/</i> directory + $limit = disk_total_space('store'); + $free = disk_free_space('store'); + + if ($this->auth->owner_id) { + $c = q("select * from channel where channel_id = %d and not (channel_pageflags & %d) limit 1", + intval($this->auth->owner_id), + intval(PAGE_REMOVED) + ); + + $ulimit = service_class_fetch($c[0]['channel_id'], 'attach_upload_limit'); + $limit = (($ulimit) ? $ulimit : $limit); + + $x = q("select sum(filesize) as total from attach where aid = %d", + intval($c[0]['channel_account_id']) + ); + $free = (($x) ? $limit - $x[0]['total'] : 0); + } + + return array( + $limit - $free, + $free + ); + } +}
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