diff options
Diffstat (limited to 'include/RedDAV')
| -rw-r--r-- | include/RedDAV/RedBasicAuth.php | 209 | ||||
| -rw-r--r-- | include/RedDAV/RedBrowser.php | 26 | ||||
| -rw-r--r-- | include/RedDAV/RedDirectory.php | 462 | ||||
| -rw-r--r-- | include/RedDAV/RedFile.php | 279 |
4 files changed, 969 insertions, 7 deletions
diff --git a/include/RedDAV/RedBasicAuth.php b/include/RedDAV/RedBasicAuth.php new file mode 100644 index 000000000..2f86d4f82 --- /dev/null +++ b/include/RedDAV/RedBasicAuth.php @@ -0,0 +1,209 @@ +<?php + +namespace RedMatrix\RedDAV; + +use Sabre\DAV; + +/** + * @brief Authentication backend class for RedDAV. + * + * This class also contains some data which is not necessary for authentication + * like timezone settings. + * + * @extends Sabre\DAV\Auth\Backend\AbstractBasic + * + * @link http://github.com/friendica/red + * @license http://opensource.org/licenses/mit-license.php The MIT License (MIT) + */ +class RedBasicAuth extends DAV\Auth\Backend\AbstractBasic { + + /** + * @brief This variable holds the currently logged-in channel_address. + * + * It is used for building path in filestorage/. + * + * @var string|null + */ + protected $channel_name = null; + /** + * channel_id of the current channel of the logged-in account. + * + * @var int + */ + public $channel_id = 0; + /** + * channel_hash of the current channel of the logged-in account. + * + * @var string + */ + public $channel_hash = ''; + /** + * Set in mod/cloud.php to observer_hash. + * + * @var string + */ + public $observer = ''; + /** + * + * @see RedBrowser::set_writeable() + * @var \Sabre\DAV\Browser\Plugin + */ + public $browser; + /** + * channel_id of the current visited path. Set in RedDirectory::getDir(). + * + * @var int + */ + public $owner_id = 0; + /** + * channel_name of the current visited path. Set in RedDirectory::getDir(). + * + * Used for creating the path in cloud/ + * + * @var string + */ + public $owner_nick = ''; + /** + * Timezone from the visiting channel's channel_timezone. + * + * Used in @ref RedBrowser + * + * @var string + */ + protected $timezone = ''; + + + /** + * @brief Validates a username and password. + * + * Guest access is granted with the password "+++". + * + * @see \Sabre\DAV\Auth\Backend\AbstractBasic::validateUserPass + * @param string $username + * @param string $password + * @return bool + */ + protected function validateUserPass($username, $password) { + if (trim($password) === '+++') { + logger('guest: ' . $username); + return true; + } + + require_once('include/auth.php'); + $record = account_verify_password($username, $password); + if ($record && $record['account_default_channel']) { + $r = q("SELECT * FROM channel WHERE channel_account_id = %d AND channel_id = %d LIMIT 1", + intval($record['account_id']), + intval($record['account_default_channel']) + ); + if ($r) { + return $this->setAuthenticated($r[0]); + } + } + $r = q("SELECT * FROM channel WHERE channel_address = '%s' LIMIT 1", + dbesc($username) + ); + if ($r) { + $x = q("SELECT account_flags, account_salt, account_password FROM account WHERE account_id = %d LIMIT 1", + intval($r[0]['channel_account_id']) + ); + if ($x) { + // @fixme this foreach should not be needed? + foreach ($x as $record) { + if (($record['account_flags'] == ACCOUNT_OK) || ($record['account_flags'] == ACCOUNT_UNVERIFIED) + && (hash('whirlpool', $record['account_salt'] . $password) === $record['account_password'])) { + logger('password verified for ' . $username); + return $this->setAuthenticated($r[0]); + } + } + } + } + logger('password failed for ' . $username); + // @TODO add security logger + return false; + } + + /** + * @brief Sets variables and session parameters after successfull authentication. + * + * @param array $r + * Array with the values for the authenticated channel. + * @return bool + */ + protected function setAuthenticated($r) { + $this->channel_name = $r['channel_address']; + $this->channel_id = $r['channel_id']; + $this->channel_hash = $this->observer = $r['channel_hash']; + $_SESSION['uid'] = $r['channel_id']; + $_SESSION['account_id'] = $r['channel_account_id']; + $_SESSION['authenticated'] = true; + return true; + } + + /** + * Sets the channel_name from the currently logged-in channel. + * + * @param string $name + * The channel's name + */ + public function setCurrentUser($name) { + $this->channel_name = $name; + } + /** + * Returns information about the currently logged-in channel. + * + * If nobody is currently logged in, this method should return null. + * + * @see \Sabre\DAV\Auth\Backend\AbstractBasic::getCurrentUser + * @return string|null + */ + public function getCurrentUser() { + return $this->channel_name; + } + + /** + * @brief Sets the timezone from the channel in RedBasicAuth. + * + * Set in mod/cloud.php if the channel has a timezone set. + * + * @param string $timezone + * The channel's timezone. + * @return void + */ + public function setTimezone($timezone) { + $this->timezone = $timezone; + } + /** + * @brief Returns the timezone. + * + * @return string + * Return the channel's timezone. + */ + public function getTimezone() { + return $this->timezone; + } + + /** + * @brief Set browser plugin for SabreDAV. + * + * @see RedBrowser::set_writeable() + * @param \Sabre\DAV\Browser\Plugin $browser + */ + public function setBrowserPlugin($browser) { + $this->browser = $browser; + } + + /** + * @brief Prints out all RedBasicAuth variables to logger(). + * + * @return void + */ + public function log() { + logger('channel_name ' . $this->channel_name, LOGGER_DATA); + logger('channel_id ' . $this->channel_id, LOGGER_DATA); + logger('channel_hash ' . $this->channel_hash, LOGGER_DATA); + logger('observer ' . $this->observer, LOGGER_DATA); + logger('owner_id ' . $this->owner_id, LOGGER_DATA); + logger('owner_nick ' . $this->owner_nick, LOGGER_DATA); + } +}
\ No newline at end of file diff --git a/include/RedDAV/RedBrowser.php b/include/RedDAV/RedBrowser.php index 6639250ae..21ea76aed 100644 --- a/include/RedDAV/RedBrowser.php +++ b/include/RedDAV/RedBrowser.php @@ -1,10 +1,4 @@ <?php -/** - * RedMatrix - "The Network" - * - * @link http://github.com/friendica/red - * @license http://opensource.org/licenses/mit-license.php The MIT License (MIT) - */ namespace RedMatrix\RedDAV; @@ -17,6 +11,9 @@ use Sabre\DAV; * for the webbrowser. * * @extends \Sabre\DAV\Browser\Plugin + * + * @link http://github.com/friendica/red + * @license http://opensource.org/licenses/mit-license.php The MIT License (MIT) */ class RedBrowser extends DAV\Browser\Plugin { @@ -33,6 +30,8 @@ class RedBrowser extends DAV\Browser\Plugin { * $enablePost will be activated through set_writeable() in a later stage. * At the moment the write_storage permission is only valid for the whole * folder. No file specific permissions yet. + * @todo disable enablePost by default and only activate if permissions + * grant edit rights. * * Disable assets with $enableAssets = false. Should get some thumbnail views * anyway. @@ -52,7 +51,11 @@ class RedBrowser extends DAV\Browser\Plugin { * call the following function to decide whether or not to show web elements * which include writeable objects. * - * @todo Maybe this can be solved with some $server->subscribeEvent()? + * @fixme It only disable/enable the visible parts. Not the POST handler + * which handels the actual requests when uploading files or creating folders. + * + * @todo Maybe this whole way of doing this can be solved with some + * $server->subscribeEvent(). */ public function set_writeable() { if (! $this->auth->owner_id) { @@ -256,9 +259,18 @@ class RedBrowser extends DAV\Browser\Plugin { $html .= $output; get_app()->page['content'] = $html; + load_pdl(get_app()); construct_page(get_app()); } + /** + * @brief Returns a human readable formatted string for filesizes. + * + * Don't we need such a functionality in other places, too? + * + * @param int $size filesize in bytes + * @return string + */ function userReadableSize($size) { $ret = ""; if (is_numeric($size)) { diff --git a/include/RedDAV/RedDirectory.php b/include/RedDAV/RedDirectory.php new file mode 100644 index 000000000..a46b77f5f --- /dev/null +++ b/include/RedDAV/RedDirectory.php @@ -0,0 +1,462 @@ +<?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('directory ' . $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('ext_path ' . $this->ext_path, LOGGER_DATA); + logger('os_path ' . $this->os_path, LOGGER_DATA); + logger('red_path ' . $this->red_path, LOGGER_DATA); + } + + /** + * @brief Returns an array with all the child nodes. + * + * @throw \Sabre\DAV\Exception\Forbidden + * @return array \Sabre\DAV\INode[] + */ + public function getChildren() { + //logger('children 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 \Sabre\DAV\Exception\Forbidden + * @throw \Sabre\DAV\Exception\NotFound + * @param string $name + */ + public function getChild($name) { + logger($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: ' . $name . ' could not be found.'); + } + + /** + * @brief Returns the name of the directory. + * + * @return string + */ + public function getName() { + //logger(basename($this->red_path), LOGGER_DATA); + return (basename($this->red_path)); + } + + /** + * @brief Renames the directory. + * + * @todo handle duplicate directory name + * + * @throw \Sabre\DAV\Exception\Forbidden + * @param string $name The new name of the directory. + * @return void + */ + public function setName($name) { + logger('old name ' . basename($this->red_path) . ' -> ' . $name, LOGGER_DATA); + + if ((! $name) || (! $this->auth->owner_id)) { + logger('permission denied ' . $name); + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + if (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'write_storage')) { + logger('permission denied '. $name); + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + list($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. + * + * @throw \Sabre\DAV\Exception\Forbidden + * @param string $name Name of the file + * @param resource|string $data Initial payload + * @return null|string ETag + */ + public function createFile($name, $data = null) { + logger($name, LOGGER_DEBUG); + + if (! $this->auth->owner_id) { + logger('permission denied ' . $name); + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + if (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'write_storage')) { + logger('permission denied ' . $name); + 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('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('file_put_contents() failed to ' . $f); + attach_delete($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('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($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 (! $result['success']) { + logger('error ' . print_r($result, true), LOGGER_DEBUG); + } + } + } + + /** + * @brief Checks if a child exists. + * + * @param string $name + * The name to check if it exists. + * @return boolean + */ + public function childExists($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('We are at /cloud show a channel list', LOGGER_DEBUG); + return true; + } + + $x = RedFileData($this->ext_path . '/' . $name, $this->auth, true); + //logger('RedFileData returns: ' . print_r($x, true), LOGGER_DATA); + if ($x) + return true; + + return false; + } + + /** + * @todo add description of what this function does. + * + * @throw \Sabre\DAV\Exception\NotFound + * @return void + */ + function getDir() { + //logger($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 (! $path_arr) + return; + + logger('paths: ' . print_r($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.'); + } + + $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; + } + + /** + * @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. + * + * @fixme Should 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 + ); + } +}
\ No newline at end of file diff --git a/include/RedDAV/RedFile.php b/include/RedDAV/RedFile.php new file mode 100644 index 000000000..f96790631 --- /dev/null +++ b/include/RedDAV/RedFile.php @@ -0,0 +1,279 @@ +<?php + +namespace RedMatrix\RedDAV; + +use Sabre\DAV; + +/** + * @brief This class represents a file in DAV. + * + * It provides all functions to work with files in Red's cloud through DAV protocol. + * + * @extends \Sabre\DAV\Node + * @implements \Sabre\DAV\IFile + * + * @link http://github.com/friendica/red + * @license http://opensource.org/licenses/mit-license.php The MIT License (MIT) + */ +class RedFile extends DAV\Node implements DAV\IFile { + + /** + * The file from attach table. + * + * @var array + * data + * flags + * filename (string) + * filetype (string) + */ + private $data; + /** + * @see \Sabre\DAV\Auth\Backend\BackendInterface + * @var \RedMatrix\RedDAV\RedBasicAuth + */ + private $auth; + /** + * @var string + */ + private $name; + + /** + * Sets up the node, expects a full path name. + * + * @param string $name + * @param array $data from attach table + * @param &$auth + */ + public function __construct($name, $data, &$auth) { + $this->name = $name; + $this->data = $data; + $this->auth = $auth; + + //logger(print_r($this->data, true), LOGGER_DATA); + } + + /** + * @brief Returns the name of the file. + * + * @return string + */ + public function getName() { + //logger(basename($this->name), LOGGER_DATA); + return basename($this->name); + } + + /** + * @brief Renames the file. + * + * @throw Sabre\DAV\Exception\Forbidden + * @param string $name The new name of the file. + * @return void + */ + public function setName($newName) { + logger('old name ' . basename($this->name) . ' -> ' . $newName, LOGGER_DATA); + + if ((! $newName) || (! $this->auth->owner_id) || (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'write_storage'))) { + logger('permission denied '. $newName); + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + $newName = str_replace('/', '%2F', $newName); + + $r = q("UPDATE attach SET filename = '%s' WHERE hash = '%s' AND id = %d LIMIT 1", + dbesc($this->data['filename']), + intval($this->data['id']) + ); + } + + /** + * @brief Updates the data of the file. + * + * @param resource $data + * @return void + */ + public function put($data) { + logger('put file: ' . basename($this->name), LOGGER_DEBUG); + $size = 0; + + // @todo only 3 values are needed + $c = q("SELECT * FROM channel WHERE channel_id = %d AND NOT (channel_pageflags & %d) LIMIT 1", + intval($this->auth->owner_id), + intval(PAGE_REMOVED) + ); + + $r = q("SELECT flags, folder, data FROM attach WHERE hash = '%s' AND uid = %d LIMIT 1", + dbesc($this->data['hash']), + intval($c[0]['channel_id']) + ); + if ($r) { + if ($r[0]['flags'] & ATTACH_FLAG_OS) { + $f = 'store/' . $this->auth->owner_nick . '/' . (($r[0]['data']) ? $r[0]['data'] : ''); + // @todo check return value and set $size directly + @file_put_contents($f, $data); + $size = @filesize($f); + logger('filename: ' . $f . ' size: ' . $size, LOGGER_DEBUG); + } else { + $r = q("UPDATE attach SET data = '%s' WHERE hash = '%s' AND uid = %d LIMIT 1", + dbesc(stream_get_contents($data)), + dbesc($this->data['hash']), + intval($this->data['uid']) + ); + $r = q("SELECT length(data) AS fsize FROM attach WHERE hash = '%s' AND uid = %d LIMIT 1", + dbesc($this->data['hash']), + intval($this->data['uid']) + ); + if ($r) { + $size = $r[0]['fsize']; + } + } + } + + // returns now() + $edited = datetime_convert(); + + $d = q("UPDATE attach SET filesize = '%s', edited = '%s' WHERE hash = '%s' AND uid = %d LIMIT 1", + dbesc($size), + dbesc($edited), + dbesc($this->data['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($r[0]['folder']), + intval($c[0]['channel_id']) + ); + + // @todo do we really want to remove the whole file if an update fails + // because of maxfilesize or quota? + // There is an Exception "InsufficientStorage" or "PaymentRequired" for + // our service class from SabreDAV we could use. + + $maxfilesize = get_config('system', 'maxfilesize'); + if (($maxfilesize) && ($size > $maxfilesize)) { + attach_delete($c[0]['channel_id'], $this->data['hash']); + return; + } + + $limit = service_class_fetch($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('service class limit exceeded for ' . $c[0]['channel_name'] . ' total usage is ' . $x[0]['total'] . ' limit is ' . $limit); + attach_delete($c[0]['channel_id'], $this->data['hash']); + return; + } + } + } + + /** + * @brief Returns the raw data. + * + * @return string + */ + public function get() { + logger('get file ' . basename($this->name), LOGGER_DEBUG); + + $r = q("SELECT data, flags, filename, filetype FROM attach WHERE hash = '%s' AND uid = %d LIMIT 1", + dbesc($this->data['hash']), + intval($this->data['uid']) + ); + if ($r) { + // @todo this should be a global definition + $unsafe_types = array('text/html', 'text/css', 'application/javascript'); + + if (in_array($r[0]['filetype'], $unsafe_types)) { + header('Content-disposition: attachment; filename="' . $r[0]['filename'] . '"'); + header('Content-type: text/plain'); + } + + if ($r[0]['flags'] & ATTACH_FLAG_OS ) { + $f = 'store/' . $this->auth->owner_nick . '/' . (($this->os_path) ? $this->os_path . '/' : '') . $r[0]['data']; + return fopen($f, 'rb'); + } + return $r[0]['data']; + } + } + + /** + * @brief Returns the ETag for a file. + * + * An ETag is a unique identifier representing the current version of the file. + * If the file changes, the ETag MUST change. + * The ETag is an arbitrary string, but MUST be surrounded by double-quotes. + * + * Return null if the ETag can not effectively be determined. + * + * @return null|string + */ + public function getETag() { + $ret = null; + if ($this->data['hash']) { + $ret = '"' . $this->data['hash'] . '"'; + } + return $ret; + } + + /** + * @brief Returns the mime-type for a file. + * + * If null is returned, we'll assume application/octet-stream + * + * @return mixed + */ + public function getContentType() { + // @todo this should be a global definition. + $unsafe_types = array('text/html', 'text/css', 'application/javascript'); + if (in_array($this->data['filetype'], $unsafe_types)) { + return 'text/plain'; + } + return $this->data['filetype']; + } + + /** + * @brief Returns the size of the node, in bytes. + * + * @return int + * filesize in bytes + */ + public function getSize() { + return $this->data['filesize']; + } + + /** + * @brief Returns the last modification time for the file, as a unix + * timestamp. + * + * @return int last modification time in UNIX timestamp + */ + public function getLastModified() { + return datetime_convert('UTC', 'UTC', $this->data['edited'], 'U'); + } + + /** + * @brief Delete the file. + * + * This method checks the permissions and then calls attach_delete() function + * to actually remove the file. + * + * @throw \Sabre\DAV\Exception\Forbidden + */ + public function delete() { + logger('delete file ' . basename($this->name), LOGGER_DEBUG); + + if ((! $this->auth->owner_id) || (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'write_storage'))) { + throw new DAV\Exception\Forbidden('Permission denied.'); + } + + if ($this->auth->owner_id !== $this->auth->channel_id) { + if (($this->auth->observer !== $this->data['creator']) || ($this->data['flags'] & ATTACH_FLAG_DIR)) { + throw new DAV\Exception\Forbidden('Permission denied.'); + } + } + + attach_delete($this->auth->owner_id, $this->data['hash']); + } +}
\ No newline at end of file |