<?php /** @file */
use Sabre\DAV;
require_once('vendor/autoload.php');
require_once('include/attach.php');
class RedInode implements DAV\INode {
private $attach;
function __construct($attach) {
$this->attach = $attach;
}
function delete() {
if(! perm_is_allowed($this->channel_id,'','view_storage'))
return;
/**
* Since I don't believe this is documented elsewhere -
* ATTACH_FLAG_OS means that the file contents are stored in the OS
* rather than in the DB - as is the case for attachments.
* Exactly how they are stored (what path and filename) are still
* TBD. We will probably not be using the original filename but
* instead the attachment 'hash' as this will prevent folks from
* uploading PHP code onto misconfigured servers and executing it.
* It's easy to misconfigure servers because we can provide a
* rule for Apache, but folks using nginx will then be susceptible.
* Then there are those who don't understand these kinds of exploits
* and don't have any idea allowing uploaded PHP files to be executed
* by the server could be a problem. We also don't have any idea what
* executable types are served on their system - like .py, .pyc, .pl, .sh
* .cgi, .exe, .bat, .net, whatever.
*/
if($this->attach['flags'] & ATTACH_FLAG_OS) {
// FIXME delete physical file
}
if($this->attach['flags'] & ATTACH_FLAG_DIR) {
// FIXME delete contents (recursive?)
}
q("delete from attach where id = %d limit 1",
intval($this->attach['id'])
);
}
function getName() {
return $this->attach['filename'];
}
function setName($newName) {
if((! $newName) || (! perm_is_allowed($this->channel_id,'','view_storage')))
return;
$this->attach['filename'] = $newName;
$r = q("update attach set filename = '%s' where id = %d limit 1",
dbesc($this->attach['filename']),
intval($this->attach['id'])
);
}
function getLastModified() {
return $this->attach['edited'];
}
}
class RedDirectory extends DAV\Node implements DAV\ICollection {
private $red_path;
private $folder_hash;
private $ext_path;
private $root_dir = '';
private $auth;
function __construct($ext_path,&$auth_plugin) {
logger('RedDirectory::__construct() ' . $ext_path);
$this->ext_path = $ext_path;
$this->red_path = ((strpos($ext_path,'/cloud') === 0) ? substr($ext_path,6) : $ext_path);
if(! $this->red_path)
$this->red_path = '/';
$this->auth = $auth_plugin;
logger('Red_Directory: ' . print_r($this,true));
$this->folder_hash = '';
$this->getDir();
}
function getChildren() {
logger('RedDirectory::getChildren : ' . print_r($this,true));
if(get_config('system','block_public') && (! $this->auth->channel_id) && (! $this->auth->observer)) {
throw new DAV\Exception\Forbidden('Permission denied.');
return;
}
if(($this->auth->owner_id) && (! perm_is_allowed($this->auth->owner_id,$this->auth->observer,'view_storage'))) {
throw new DAV\Exception\Forbidden('Permission denied.');
return;
}
$contents = RedCollectionData($this->red_path,$this->auth);
return $contents;
}
function getChild($name) {
logger('RedDirectory::getChild : ' . $name);
logger('RedDirectory::getChild : ' . print_r($this,true));
if(get_config('system','block_public') && (! $this->auth->channel_id) && (! $this->auth->observer)) {
throw new DAV\Exception\Forbidden('Permission denied.');
return;
}
if(($this->auth->owner_id) && (! perm_is_allowed($this->auth->owner_id,$this->auth->observer,'view_storage'))) {
throw new DAV\Exception\Forbidden('Permission denied.');
return;
}
if($this->red_path === '/' && $name === 'cloud') {
return new RedDirectory('/cloud', $this->auth);
}
$x = RedFileData($this->ext_path . '/' . $name, $this->auth);
logger('RedFileData returns: ' . print_r($x,true));
if($x)
return $x;
throw new DAV\Exception\NotFound('The file with name: ' . $name . ' could not be found');
}
function getName() {
logger('RedDirectory::getName : ' . print_r($this,true));
logger('RedDirectory::getName returns: ' . basename($this->red_path));
return (basename($this->red_path));
}
function createFile($name,$data = null) {
logger('RedDirectory::createFile : ' . $name);
logger('RedDirectory::createFile : ' . print_r($this,true));
// logger('createFile():' . stream_get_contents($data));
if(! $this->auth->owner_id) {
logger('createFile: permission denied');
throw new DAV\Exception\Forbidden('Permission denied.');
return;
}
if(! perm_is_allowed($this->auth->owner_id,$this->auth->observer,'write_storage')) {
logger('createFile: permission denied');
throw new DAV\Exception\Forbidden('Permission denied.');
return;
}
$mimetype = z_mime_content_type($name);
$c = q("select * from channel where channel_id = %d limit 1",
intval($this->auth->channel_id)
);
$filesize = 0;
$hash = random_string();
dbg(1);
$r = q("INSERT INTO attach ( aid, uid, hash, filename, folder, filetype, filesize, revision, data, created, edited, allow_cid, allow_gid, deny_cid, deny_gid )
VALUES ( %d, %d, '%s', '%s', '%s', '%s', %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s' ) ",
intval($c[0]['channel_account_id']),
intval($c[0]['channel_id']),
dbesc($hash),
dbesc($name),
dbesc($this->folder_hash),
dbesc($mimetype),
intval($filesize),
intval(0),
dbesc(stream_get_contents($data)),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc($c[0]['channel_allow_cid']),
dbesc($c[0]['channel_allow_gid']),
dbesc($c[0]['channel_deny_cid']),
dbesc($c[0]['channel_deny_gid'])
);
$r = q("update attach set filesize = length(data) where hash = '%s' and uid = %d limit 1",
dbesc($hash),
intval($c[0]['channel_id'])
);
dbg(0);
}
function createDirectory($name) {
logger('RedDirectory::createDirectory: ' . $name);
if((! $this->auth->owner_id) || (! perm_is_allowed($this->auth->owner_id,$this->auth->observer,'write_storage'))) {
throw new DAV\Exception\Forbidden('Permission denied.');
return;
}
$r = q("select * from channel where channel_id = %d limit 1",
dbesc($this->auth->owner_id)
);
if($r) {
$result = attach_mkdir($r[0],$this->auth->observer,array('filename' => $name,'folder' => $this->folder_hash));
logger('RedDirectory::createDirectory: ' . print_r($result,true));
}
}
function childExists($name) {
logger('RedDirectory::childExists : ' . print_r($this->auth,true));
if($this->red_path === '/' && $name === 'cloud') {
logger('RedDirectory::childExists /cloud: true');
return true;
}
$x = RedFileData($this->ext_path . '/' . $name, $this->auth,true);
logger('RedFileData returns: ' . print_r($x,true));
if($x)
return true;
return false;
}
function getDir() {
logger('getDir: ' . $this->ext_path);
$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(! $path_arr)
return;
logger('getDir(): path: ' . print_r($path_arr,true));
$channel_name = $path_arr[0];
$r = q("select channel_id from channel where channel_address = '%s' limit 1",
dbesc($channel_name)
);
if(! $r)
return;
$channel_id = $r[0]['channel_id'];
$this->auth->owner_id = $channel_id;
$path = '/' . $channel_name;
$folder = '';
for($x = 1; $x < count($path_arr); $x ++) {
dbg(1);
$r = q("select id, hash, filename, flags from attach where folder = '%s' and filename = '%s' and (flags & %d)",
dbesc($folder),
dbesc($path_arr[$x]),
intval($channel_id),
intval(ATTACH_FLAG_DIR)
);
dbg(0);
if($r && ( $r[0]['flags'] & ATTACH_FLAG_DIR)) {
$folder = $r[0]['hash'];
$path = $path . '/' . $r[0]['filename'];
}
}
$this->folder_hash = $folder;
return;
}
}
class RedFile extends DAV\Node implements DAV\IFile {
private $data;
private $auth;
private $name;
function __construct($name, $data, &$auth) {
logger('RedFile::_construct: ' . $name);
$this->name = $name;
$this->data = $data;
$this->auth = $auth;
logger('RedFile::_construct: ' . print_r($this->data,true));
}
function getName() {
logger('RedFile::getName: ' . basename($this->name));
return basename($this->name);
}
function setName($newName) {
logger('RedFile::setName: ' . basename($this->name) . ' -> ' . $newName);
if((! $newName) || (! $this->auth->owner_id) || (! perm_is_allowed($this->auth->owner_id,$this->auth->observer,'write_storage'))) {
throw new DAV\Exception\Forbidden('Permission denied.');
return;
}
$newName = str_replace('/','%2F',$newName);
$r = q("update attach set filename = '%s' where hash = '%s' and id = %d limit 1",
dbesc($this->data['filename']),
intval($this->data['id'])
);
}
function put($data) {
logger('RedFile::put: ' . basename($this->name));
// logger('put():' . stream_get_contents($data));
dbg(1);
$r = q("update attach set data = '%s' where hash = '%s' and uid = %d limit 1",
dbesc(stream_get_contents($data)),
dbesc($this->data['hash']),
intval($this->data['uid'])
);
$r = q("update attach set filesize = length(data) where hash = '%s' and uid = %d limit 1",
dbesc($this->data['hash']),
intval($this->data['uid'])
);
dbg(0);
}
function get() {
logger('RedFile::get: ' . basename($this->name));
$r = q("select data from attach where hash = '%s' and uid = %d limit 1",
dbesc($this->data['hash']),
intval($this->data['uid'])
);
if($r) return $r[0]['data'];
}
function getETag() {
logger('RedFile::getETag: ' . basename($this->name));
return $this->data['hash'];
}
function getContentType() {
return $this->data['filetype'];
}
function getSize() {
return $this->data['filesize'];
}
function getLastModified() {
logger('RedFile::getLastModified: ' . basename($this->name));
return $this->data['edited'];
}
}
function RedChannelList(&$auth) {
$ret = array();
$r = q("select channel_id, channel_address from channel where not (channel_pageflags & %d)",
intval(PAGE_REMOVED)
);
if($r) {
foreach($r as $rr) {
if(perm_is_allowed($rr['channel_id'],$auth->observer,'view_storage')) {
$ret[] = new RedDirectory('/cloud/' . $rr['channel_address'],$auth);
}
}
}
return $ret;
}
function RedCollectionData($file,&$auth) {
$ret = array();
$x = strpos($file,'/cloud');
if($x === 0) {
$file = substr($file,6);
}
logger('RedCollectionData: ' . $file);
if((! $file) || ($file === '/')) {
return RedChannelList($auth);
}
$file = trim($file,'/');
$path_arr = explode('/', $file);
if(! $path_arr)
return null;
$channel_name = $path_arr[0];
$r = q("select channel_id from channel where channel_address = '%s' limit 1",
dbesc($channel_name)
);
logger('dbg1: ' . print_r($r,true));
if(! $r)
return null;
$channel_id = $r[0]['channel_id'];
$auth->owner_id = $channel_id;
$path = '/' . $channel_name;
$folder = '';
for($x = 1; $x < count($path_arr); $x ++) {
$r = q("select id, hash, filename, flags from attach where folder = '%s' and filename = '%s' and (flags & %d)",
dbesc($folder),
dbesc($path_arr[$x]),
intval(ATTACH_FLAG_DIR)
);
if($r && ( $r[0]['flags'] & ATTACH_FLAG_DIR)) {
$folder = $r[0]['hash'];
$path = $path . '/' . $r[0]['filename'];
}
}
logger('dbg2: ' . print_r($r,true));
if($path !== '/' . $file) {
logger("RedCollectionData: Path mismatch: $path !== /$file");
return NULL;
}
$ret = array();
$r = q("select id, uid, hash, filename, filetype, filesize, revision, folder, flags, created, edited from attach where folder = '%s' and uid = %d group by filename",
dbesc($folder),
intval($channel_id)
);
logger('dbg2: ' . print_r($r,true));
foreach($r as $rr) {
if($rr['flags'] & ATTACH_FLAG_DIR)
$ret[] = new RedDirectory('/cloud' . $path . '/' . $rr['filename'],$auth);
else
$ret[] = new RedFile('/cloud' . $path . '/' . $rr['filename'],$rr,$auth);
}
return $ret;
}
function RedFileData($file, &$auth,$test = false) {
logger('RedFileData:' . $file . (($test) ? ' (test mode) ' : ''));
$x = strpos($file,'/cloud');
if($x === 0) {
$file = substr($file,6);
}
logger('RedFileData2: ' . $file);
if((! $file) || ($file === '/')) {
return RedDirectory('/',$auth);
}
$file = trim($file,'/');
logger('file=' . $file);
$path_arr = explode('/', $file);
if(! $path_arr)
return null;
logger("file = $file - path = " . print_r($path_arr,true));
$channel_name = $path_arr[0];
$r = q("select channel_id from channel where channel_address = '%s' limit 1",
dbesc($channel_name)
);
logger('dbg0: ' . print_r($r,true));
if(! $r)
return null;
$channel_id = $r[0]['channel_id'];
$path = '/' . $channel_name;
$auth->owner_id = $channel_id;
$permission_error = false;
$folder = '';
//dbg(1);
require_once('include/security.php');
$perms = permissions_sql($channel_id);
$errors = false;
for($x = 1; $x < count($path_arr); $x ++) {
dbg(1);
$r = q("select id, hash, filename, flags from attach where folder = '%s' and filename = '%s' and uid = %d and (flags & %d) $perms",
dbesc($folder),
dbesc($path_arr[$x]),
intval($channel_id),
intval(ATTACH_FLAG_DIR)
);
dbg(0);
logger('dbg1: ' . print_r($r,true));
if($r && ( $r[0]['flags'] & ATTACH_FLAG_DIR)) {
$folder = $r[0]['hash'];
$path = $path . '/' . $r[0]['filename'];
}
if(! $r) {
$r = q("select id, uid, hash, filename, filetype, filesize, revision, folder, flags, created, edited from attach
where folder = '%s' and filename = '%s' and uid = %d $perms group by filename limit 1",
dbesc($folder),
basename($file),
intval($channel_id)
);
}
if(! $r) {
$errors = true;
$r = q("select id, uid, hash, filename, filetype, filesize, revision, folder, flags, created, edited from attach
where folder = '%s' and filename = '%s' and uid = %d group by filename limit 1",
dbesc($folder),
basename($file),
intval($channel_id)
);
if($r)
$permission_error = true;
}
}
logger('dbg1: ' . print_r($r,true));
if($path === '/' . $file) {
if($test)
return true;
// final component was a directory.
return new RedDirectory('/cloud/' . $file,$auth);
}
if($errors) {
if($test)
return false;
if($permission_error) {
logger('RedFileData: permission error');
throw new DAV\Exception\Forbidden('Permission denied.');
}
logger('RedFileData: not found');
return;
}
if($r) {
if($test)
return true;
if($r[0]['flags'] & ATTACH_FLAG_DIR)
return new RedDirectory('/cloud' . $path . '/' . $r[0]['filename'],$auth);
else
return new RedFile('/cloud' . $path . '/' . $r[0]['filename'],$r[0],$auth);
}
return false;
}