<?php

/**
 * class.webdav.php
 *
 * @package workflow.engine.classes
 */
require_once "HTTP/WebDAV/Server.php";
require_once "System.php";

/**
 * ProcessMaker Filesystem access using WebDAV
 *
 * @access public
 * @package workflow.engine.classes
 *
 */
class ProcessMakerWebDav extends HTTP_WebDAV_Server
{

    /**
     * Root directory for WebDAV access
     *
     * Defaults to webserver document root (set by ServeRequest)
     *
     * @access private
     * @var string
     */
    public $base = "";

    /**
     * Serve a webdav request
     *
     * @access public
     * @param string
     */
    public function ServeRequest($base = false)
    {
        //$this->base = '/';
        $this->uriBase = '/sys' . SYS_SYS . '/' . SYS_LANG . '/' . SYS_SKIN . '/services/webdav/';

        // let the base class do all the work
        parent::ServeRequest();
    }

    /**
     * No authentication is needed here
     *
     * @access private
     * @param string HTTP Authentication type (Basic, Digest, ...)
     * @param string Username
     * @param string Password
     * @return bool true on successful authentication
     */
    public function check_auth($type, $user, $pass)
    {
        return true;
    }

    /**
     * PROPFIND method handler
     *
     * @param array general parameter passing array
     * @param array return array for file properties
     * @return bool true on success
     */
    public function PROPFIND(&$options, &$files)
    {
        $paths = $this->paths;
        // prepare property array
        $files["files"] = array();

        $pathClasses = PATH_DB . PATH_SEP . SYS_SYS . PATH_SEP . 'classes' . PATH_SEP;
        if (count($paths) == 0 && is_dir($pathClasses)) {
            $props = array();
            $props[] = $this->mkprop("displayname", 'Classes');
            $props[] = $this->mkprop("creationdate", filectime($pathClasses));
            $props[] = $this->mkprop("getlastmodified", filemtime($pathClasses));
            $props[] = $this->mkprop("lastaccessed", filemtime($pathClasses));
            $props[] = $this->mkprop("resourcetype", 'collection');
            $props[] = $this->mkprop("getcontenttype", 'httpd/unix-directory');
            $files["files"][] = array('path' => 'classes', 'props' => $props
            );
        }

        if (count($paths) > 0 && $paths[0] == 'classes' && is_dir($pathClasses)) {
            // try to open directory
            $handle = @opendir($pathClasses);
            if ($handle) {
                while ($filename = readdir($handle)) {
                    $ext = array_pop(explode('.', $filename));
                    if ($filename != "." && $filename != ".." && !is_dir($pathClasses . $filename) && $ext == 'php') {
                        $props = array();
                        $props[] = $this->mkprop("displayname", $filename);
                        $props[] = $this->mkprop("creationdate", filectime($pathClasses . $filename));
                        $props[] = $this->mkprop("getlastmodified", filemtime($pathClasses . $filename));
                        $props[] = $this->mkprop("getetag", fileatime($pathClasses . $filename));
                        $props[] = $this->mkprop("lastaccessed", filemtime($pathClasses . $filename));
                        $props[] = $this->mkprop("resourcetype", '');
                        $props[] = $this->mkprop("getcontenttype", 'text/plain');
                        $props[] = $this->mkprop("getcontentlength", filesize($pathClasses . $filename));
                        if (count($paths) == 1 || (count($paths) == 2 && $paths[1] == $filename)) {
                            $files["files"][] = array('path' => "classes/$filename", 'props' => $props);
                        }
                    }
                }
            }
        } //path classes


        $pathProcesses = PATH_DB . SYS_SYS . PATH_SEP;
        if (count($paths) == 0 && is_dir($pathProcesses)) {
            $props = array();
            $props[] = $this->mkprop("displayname", 'Processes');
            $props[] = $this->mkprop("creationdate", filectime($pathProcesses));
            $props[] = $this->mkprop("getlastmodified", filemtime($pathProcesses));
            $props[] = $this->mkprop("resourcetype", 'collection');
            $props[] = $this->mkprop("getcontenttype", 'httpd/unix-directory');
            $files["files"][] = array('path' => 'processes', 'props' => $props
            );
        }

        //list all active processes
        if (count($paths) == 1 && $paths[0] == 'processes' && is_dir($pathProcesses)) {
            // try to get the process directory list
            G::LoadClass('processMap');
            G::LoadClass('model/Process');
            $oProcessMap = new processMap();
            $oProcess = new Process();
            $c = $oProcessMap->getConditionProcessList();
            $oDataset = ProcessPeer::doSelectRS($c);
            $oDataset->setFetchmode(ResultSet::FETCHMODE_ASSOC);
            $oDataset->next();
            while ($aRow = $oDataset->getRow()) {
                if ($aRow['PRO_STATUS'] == 'ACTIVE') {
                    $aProcess = $oProcess->load($aRow['PRO_UID']);
                    $props = array();
                    $props[] = $this->mkprop("displayname", $aProcess['PRO_TITLE']);
                    $props[] = $this->mkprop("creationdate", filectime($pathProcesses));
                    $props[] = $this->mkprop("getlastmodified", filemtime($pathProcesses));
                    $props[] = $this->mkprop("lastaccessed", filemtime($pathProcesses));
                    $props[] = $this->mkprop("resourcetype", 'collection');
                    $props[] = $this->mkprop("getcontenttype", 'httpd/unix-directory');
                    $files["files"][] = array('path' => "processes/" . $aRow['PRO_UID'], 'props' => $props
                    );
                }
                $oDataset->next();
            }
        } //dir of processes
        //content of any process  ( the three major folders of Processes )
        $pathXmlform = $pathProcesses . 'xmlForms' . PATH_SEP;
        if (count($paths) == 2 && $paths[0] == 'processes' && is_dir($pathProcesses)) {
            $props = array();
            $props[] = $this->mkprop("displayname", 'xmlforms');
            $props[] = $this->mkprop("creationdate", filectime($pathXmlform));
            $props[] = $this->mkprop("getlastmodified", filemtime($pathXmlform));
            $props[] = $this->mkprop("lastaccessed", filemtime($pathXmlform));
            $props[] = $this->mkprop("resourcetype", 'collection');
            $props[] = $this->mkprop("getcontenttype", 'httpd/unix-directory');
            $files["files"][] = array('path' => 'processes/' . $paths[1] . '/xmlforms', 'props' => $props
            );

            $props[] = $this->mkprop("displayname", 'mailTemplates');
            $props[] = $this->mkprop("creationdate", filectime($pathProcesses));
            $props[] = $this->mkprop("getlastmodified", filemtime($pathProcesses));
            $props[] = $this->mkprop("lastaccessed", filemtime($pathProcesses));
            $props[] = $this->mkprop("resourcetype", 'collection');
            $props[] = $this->mkprop("getcontenttype", 'httpd/unix-directory');
            $files["files"][] = array('path' => 'processes/' . $paths[1] . '/mailTemplates', 'props' => $props
            );

            $props[] = $this->mkprop("displayname", 'public_html');
            $props[] = $this->mkprop("creationdate", filectime($pathProcesses));
            $props[] = $this->mkprop("getlastmodified", filemtime($pathProcesses));
            $props[] = $this->mkprop("lastaccessed", filemtime($pathProcesses));
            $props[] = $this->mkprop("resourcetype", 'collection');
            $props[] = $this->mkprop("getcontenttype", 'httpd/unix-directory');
            $files["files"][] = array('path' => 'processes/' . $paths[1] . '/public_html', 'props' => $props
            );
        } //content of any processes
        //list available xmlforms
        if (count($paths) == 3 && $paths[0] == 'processes' && $paths[2] == 'xmlforms' && is_dir($pathXmlform)) {
            $pathXmlform = $pathProcesses . 'xmlForms' . PATH_SEP . $paths[1] . PATH_SEP;

            $handle = @opendir($pathXmlform);
            if ($handle) {
                while ($filename = readdir($handle)) {
                    $ext = array_pop(explode('.', $filename));
                    if ($filename != "." && $filename != ".." && !is_dir($pathXmlform . $filename) && ($ext == 'xml' || $ext == 'html')) {
                        $props = array();
                        $props[] = $this->mkprop("displayname", $filename);
                        $props[] = $this->mkprop("creationdate", filectime($pathXmlform . $filename));
                        $props[] = $this->mkprop("getlastmodified", filemtime($pathXmlform . $filename));
                        $props[] = $this->mkprop("getetag", fileatime($pathXmlform . $filename));
                        $props[] = $this->mkprop("lastaccessed", filemtime($pathXmlform . $filename));
                        $props[] = $this->mkprop("resourcetype", '');
                        $props[] = $this->mkprop("getcontenttype", 'text/plain');
                        $props[] = $this->mkprop("getcontentlength", filesize($pathXmlform . $filename));
                        //if ( count( $paths ) == 1 || ( count( $paths ) == 2 && $paths[1] == $filename ) )
                        $files["files"][] = array('path' => 'processes/' . $paths[1] . '/xmlforms/' . $filename, 'props' => $props
                        );
                    }
                }
            }
        } //content of xmlforms
        //list available mailTemplates
        $pathTemplates = $pathProcesses . 'mailTemplates' . PATH_SEP;
        if (count($paths) == 3 && $paths[0] == 'processes' && $paths[2] == 'mailTemplates' && is_dir($pathTemplates)) {
            $pathTemplates = $pathProcesses . 'mailTemplates' . PATH_SEP . $paths[1] . PATH_SEP;

            $handle = @opendir($pathTemplates);
            if ($handle) {
                while ($filename = readdir($handle)) {
                    $ext = array_pop(explode('.', $filename));
                    if ($filename != "." && $filename != ".." && !is_dir($pathTemplates . $filename) /* && ( $ext == 'xml' || $ext == 'html' ) */) {
                        $props = array();
                        $props[] = $this->mkprop("displayname", $filename);
                        $props[] = $this->mkprop("creationdate", filectime($pathTemplates . $filename));
                        $props[] = $this->mkprop("getlastmodified", filemtime($pathTemplates . $filename));
                        $props[] = $this->mkprop("getetag", fileatime($pathTemplates . $filename));
                        $props[] = $this->mkprop("lastaccessed", filemtime($pathTemplates . $filename));
                        $props[] = $this->mkprop("resourcetype", '');
                        $props[] = $this->mkprop("getcontenttype", 'text/plain');
                        $props[] = $this->mkprop("getcontentlength", filesize($pathTemplates . $filename));
                        //if ( count( $paths ) == 1 || ( count( $paths ) == 2 && $paths[1] == $filename ) )
                        $files["files"][] = array('path' => 'processes/' . $paths[1] . '/mailTemplates/' . $filename, 'props' => $props
                        );
                    }
                }
            }
        } //content of mailTemplates
        //list available public_html files
        $pathPublic = $pathProcesses . 'public' . PATH_SEP;
        if (count($paths) == 3 && $paths[0] == 'processes' && $paths[2] == 'public_html' && is_dir($pathTemplates)) {
            $pathPublic = $pathProcesses . 'public' . PATH_SEP . $paths[1] . PATH_SEP;

            $handle = @opendir($pathPublic);
            if ($handle) {
                while ($filename = readdir($handle)) {
                    $ext = array_pop(explode('.', $filename));
                    if ($filename != "." && $filename != ".." && !is_dir($pathPublic . $filename) /* && ( $ext == 'xml' || $ext == 'html' ) */) {
                        $props = array();
                        $props[] = $this->mkprop("displayname", $filename);
                        $props[] = $this->mkprop("creationdate", filectime($pathPublic . $filename));
                        $props[] = $this->mkprop("getlastmodified", filemtime($pathPublic . $filename));
                        $props[] = $this->mkprop("getetag", fileatime($pathPublic . $filename));
                        $props[] = $this->mkprop("lastaccessed", filemtime($pathPublic . $filename));
                        $props[] = $this->mkprop("resourcetype", '');
                        $props[] = $this->mkprop("getcontenttype", 'text/plain');
                        $props[] = $this->mkprop("getcontentlength", filesize($pathPublic . $filename));
                        //if ( count( $paths ) == 1 || ( count( $paths ) == 2 && $paths[1] == $filename ) )
                        $files["files"][] = array('path' => 'processes/' . $paths[1] . '/public_html/' . $filename, 'props' => $props
                        );
                    }
                }
            }
        } //content of public_html files


        /*
          if ( 1 ) {
          $props = array ();
          $props[] = $this->mkprop("displayname",     print_r ($pathPublic, 1) );
          $props[] = $this->mkprop("creationdate",    filectime( PATH_DB ) );
          $props[] = $this->mkprop("getlastmodified", filemtime( PATH_DB ) );
          $props[] = $this->mkprop("resourcetype",    'collection' );
          $props[] = $this->mkprop("getcontenttype",  'httpd/unix-directory' );
          $files["files"][] = array ( 'path' => '/' , 'props' => $props);
          } */

        // ok, all done
        return true;
    }

    /**
     * detect if a given program is found in the search PATH
     *
     * helper function used by _mimetype() to detect if the
     * external 'file' utility is available
     *
     * @param string program name
     * @param string optional search path, defaults to $PATH
     * @return bool true if executable program found in path
     */
    public function _can_execute($name, $path = false)
    {
        // path defaults to PATH from environment if not set
        if ($path === false) {
            $path = getenv("PATH");
        }

        // check method depends on operating system
        if (!strncmp(PHP_OS, "WIN", 3)) {
            // on Windows an appropriate COM or EXE file needs to exist
            $exts = array(".exe", ".com"
            );
            $check_fn = "file_exists";
        } else {
            // anywhere else we look for an executable file of that name
            $exts = array(""
            );
            $check_fn = "is_executable";
        }

        // now check the directories in the path for the program
        foreach (explode(PATH_SEPARATOR, $path) as $dir) {
            // skip invalid path entries
            if (!file_exists($dir)) {
                continue;
            }
            if (!is_dir($dir)) {
                continue;
            }

            // and now look for the file
            foreach ($exts as $ext) {
                if ($check_fn("$dir/$name" . $ext)) {
                    return true;
                }
            }
        }

        return false;
    }

    /**
     * try to detect the mime type of a file
     *
     * @param string file path
     * @return string guessed mime type
     */
    public function _mimetype($fspath)
    {
        if (@is_dir($fspath)) {
            // directories are easy
            return "httpd/unix-directory";
        } elseif (function_exists("mime_content_type")) {
            // use mime magic extension if available
            $mime_type = mime_content_type($fspath);
        } elseif ($this->_can_execute("file")) {
            // it looks like we have a 'file' command,
            // lets see it it does have mime support
            $fp = popen("file -i '$fspath' 2>/dev/null", "r");
            $reply = fgets($fp);
            pclose($fp);

            // popen will not return an error if the binary was not found
            // and find may not have mime support using "-i"
            // so we test the format of the returned string
            // the reply begins with the requested filename
            if (!strncmp($reply, "$fspath: ", strlen($fspath) + 2)) {
                $reply = substr($reply, strlen($fspath) + 2);
                // followed by the mime type (maybe including options)
                if (preg_match('/^[[:alnum:]_-]+/[[:alnum:]_-]+;?.*/', $reply, $matches)) {
                    $mime_type = $matches[0];
                }
            }
        }

        if (empty($mime_type)) {
            // Fallback solution: try to guess the type by the file extension
            // TODO: add more ...
            // TODO: it has been suggested to delegate mimetype detection
            //       to apache but this has at least three issues:
            //       - works only with apache
            //       - needs file to be within the document tree
            //       - requires apache mod_magic
            // TODO: can we use the registry for this on Windows?
            //       OTOH if the server is Windos the clients are likely to
            //       be Windows, too, and tend do ignore the Content-Type
            //       anyway (overriding it with information taken from
            //       the registry)
            // TODO: have a seperate PEAR class for mimetype detection?
            switch (strtolower(strrchr(basename($fspath), "."))) {
                case ".html":
                    $mime_type = "text/html";
                    break;
                case ".gif":
                    $mime_type = "image/gif";
                    break;
                case ".jpg":
                    $mime_type = "image/jpeg";
                    break;
                default:
                    $mime_type = "application/octet-stream";
                    break;
            }
        }

        return $mime_type;
    }

    /**
     * GET method handler
     *
     * @param array parameter passing array
     * @return bool true on success
     */
    public function GET(&$options)
    {
        G::LoadSystem('inputfilter');
        $filter = new InputFilter();
        $options = $filter->xssFilterHard($options);
        $paths = $filter->xssFilterHard($this->paths);

        $pathClasses = PATH_DB . SYS_SYS . PATH_SEP . 'classes' . PATH_SEP;
        if (count($paths) > 0 && $paths[0] == 'classes' && is_dir($pathClasses)) {
            $fsFile = $pathClasses . $paths[1];
            $fsFile = $filter->xssFilterHard($fsFile);
            if (count($paths) == 2 && file_exists($fsFile)) {
                $content = file_get_contents($fsFile);
                $content = $filter->xssFilterHard($content);
                print $content;
                header("Content-Type: " . mime_content_type($fsFile));
                header("Last-Modified: " . date("D, j M Y H:m:s ", file_mtime($fsFile)) . "GMT");
                header("Content-Length: " . filesize($fsFile));
                return true;
            }
        }

        $pathProcesses = PATH_DB . SYS_SYS . PATH_SEP;
        if (count($paths) > 0 && $paths[0] == 'processes' && is_dir($pathProcesses)) {
            if (count($paths) == 4 && $paths[2] == 'xmlforms') {
                $pathXmlform = $pathProcesses . 'xmlForms' . PATH_SEP . $paths[1] . PATH_SEP;
                $fsFile = $pathXmlform . $paths[3];
                $fsFile = $filter->xssFilterHard($fsFile);
                if (count($paths) == 4 && file_exists($fsFile)) {
                    $content = file_get_contents($fsFile);
                    $content = $filter->xssFilterHard($content);
                    print $content;
                    header("Content-Type: " . mime_content_type($fsFile));
                    header("Last-Modified: " . date("D, j M Y H:m:s ", file_mtime($fsFile)) . "GMT");
                    header("Content-Length: " . filesize($fsFile));
                    return true;
                }
            }

            if (count($paths) == 4 && $paths[2] == 'mailTemplates') {
                $pathTemplates = $pathProcesses . 'mailTemplates' . PATH_SEP . $paths[1] . PATH_SEP;
                $fsFile = $pathTemplates . $paths[3];
                $fsFile = $filter->xssFilterHard($fsFile);
                if (count($paths) == 4 && file_exists($fsFile)) {
                    $content = file_get_contents($fsFile);
                    $content = $filter->xssFilterHard($content);
                    print $content;
                    header("Content-Type: " . mime_content_type($fsFile));
                    header("Last-Modified: " . date("D, j M Y H:m:s ", file_mtime($fsFile)) . "GMT");
                    header("Content-Length: " . filesize($fsFile));
                    return true;
                }
            }

            if (count($paths) == 4 && $paths[2] == 'public_html') {
                $pathPublic = $pathProcesses . 'public' . PATH_SEP . $paths[1] . PATH_SEP;
                $fsFile = $pathPublic . $paths[3];
                $fsFile = $filter->xssFilterHard($fsFile);
                if (count($paths) == 4 && file_exists($fsFile)) {
                    $content = file_get_contents($fsFile);
                    $content = $filter->xssFilterHard($content);
                    print $content;
                    header("Content-Type: " . mime_content_type($fsFile));
                    header("Last-Modified: " . date("D, j M Y H:m:s ", file_mtime($fsFile)) . "GMT");
                    header("Content-Length: " . filesize($fsFile));
                    return true;
                }
            }
        }

        print_r($paths);
        return true;

        if ($options["path"] == '/') {
            return $this->getRoot($options);
        }
        //print_r ($options);
        // get absolute fs path to requested resource
        $fspath = $this->base . $options["path"];

        // sanity check
        if (!file_exists($fspath)) {
            return false;
        }

        // is this a collection?
        if (is_dir($fspath)) {
            return $this->GetDir($fspath, $options);
        }

        // detect resource type
        $options['mimetype'] = $this->_mimetype($fspath);

        // detect modification time
        // see rfc2518, section 13.7
        // some clients seem to treat this as a reverse rule
        // requiering a Last-Modified header if the getlastmodified header was set
        $options['mtime'] = filemtime($fspath);

        // detect resource size
        $options['size'] = filesize($fspath);

        // no need to check result here, it is handled by the base class
        $options['stream'] = fopen($fspath, "r");

        return true;
    }

    /**
     * getRoot
     *
     * @param string &$options
     * @return boolean false
     */
    public function getRoot(&$options)
    {
        $path = $this->_slashify($options["path"]);
        // fixed width directory column format
        $format = "%15s  %-19s  %-s\n";

        echo "<html><head><title>Index of " . htmlspecialchars($options['path']) . "</title></head>\n";
        echo "<h1>Index of " . htmlspecialchars($options['path']) . "</h1>\n";

        echo "<pre>";
        printf($format, "Size", "Last modified", "Filename");
        echo "<hr>";

        $pathRoot = array('xmlforms', 'public_html', 'dir1', 'dir2'
        );

        foreach ($pathRoot as $key => $val) {
            $fullpath = $fspath . "/" . $filename;
            $name = htmlspecialchars($val);
            printf($format, number_format(filesize($fullpath)), strftime("%Y-%m-%d %H:%M:%S", filemtime($fullpath)), "<a href='$this->base_uri$path$name'>$name</a>");
        }

        echo "</pre>";
        echo "</html>\n";

        die();

        $handle = @opendir($fspath);
        if (!$handle) {
            return false;
        }

        while ($filename = readdir($handle)) {
            if ($filename != "." && $filename != "..") {
                $fullpath = $fspath . "/" . $filename;
                $name = htmlspecialchars($filename);
                printf($format, number_format(filesize($fullpath)), strftime("%Y-%m-%d %H:%M:%S", filemtime($fullpath)), "<a href='$this->base_uri$path$name'>$name</a>");
            }
        }

        echo "</pre>";

        closedir($handle);

        echo "</html>\n";

        exit();
    }

    /**
     * GET method handler for directories
     *
     * This is a very simple mod_index lookalike.
     * See RFC 2518, Section 8.4 on GET/HEAD for collections
     *
     * @param string directory path
     * @return void function has to handle HTTP response itself
     */
    public function GetDir($fspath, &$options)
    {
        $path = $this->_slashify($options["path"]);
        if ($path != $options["path"]) {
            header("Location: " . $this->base_uri . $path);
            exit();
        }

        // fixed width directory column format
        $format = "%15s  %-19s  %-s\n";

        $handle = @opendir($fspath);
        if (!$handle) {
            return false;
        }

        echo "<html><head><title>Index of " . htmlspecialchars($options['path']) . "</title></head>\n";

        echo "<h1>Index of " . htmlspecialchars($options['path']) . "</h1>\n";

        echo "<pre>";
        printf($format, "Size", "Last modified", "Filename");
        echo "<hr>";

        while ($filename = readdir($handle)) {
            if ($filename != "." && $filename != "..") {
                $fullpath = $fspath . "/" . $filename;
                $name = htmlspecialchars($filename);
                printf($format, number_format(filesize($fullpath)), strftime("%Y-%m-%d %H:%M:%S", filemtime($fullpath)), "<a href='$this->base_uri$path$name'>$name</a>");
            }
        }

        echo "</pre>";

        closedir($handle);

        echo "</html>\n";

        exit();
    }

    /**
     * PUT method handler
     *
     * @param array parameter passing array
     * @return bool true on success
     */
    public function PUT(&$options)
    {
        $paths = $this->paths;

        $pathClasses = PATH_DB . PATH_SEP . 'classes' . PATH_SEP;
        if (count($paths) > 0 && $paths[0] == 'classes' && is_dir($pathClasses)) {
            $fsFile = $pathClasses . $paths[1];
            if (count($paths) == 2 && file_exists($fsFile)) {
                $fp = fopen($fsFile, "w");
                if (is_resource($fp) && is_resource($options["stream"])) {
                    while (!feof($options["stream"])) {
                        fwrite($fp, fread($options["stream"], 4096));
                    }
                    fclose($fp);
                    fclose($options["stream"]);
                }
                return "201 Created " . $fsFile;
            }
        }

        $pathProcesses = PATH_DB . SYS_SYS . PATH_SEP;
        if (count($paths) > 0 && $paths[0] == 'processes' && is_dir($pathProcesses)) {
            if ($paths[2] == 'xmlforms') {
                $pathTemplates = $pathProcesses . 'xmlForms' . PATH_SEP . $paths[1] . PATH_SEP;
                $fsFile = $pathTemplates . $paths[3];
                if (count($paths) == 4 && file_exists($fsFile)) {
                    $fp = fopen($fsFile, "w");
                    if (is_resource($fp) && is_resource($options["stream"])) {
                        while (!feof($options["stream"])) {
                            fwrite($fp, fread($options["stream"], 4096));
                        }
                        fclose($fp);
                        fclose($options["stream"]);
                    }
                    return "201 Created " . $fsFile;
                }
            }

            if ($paths[2] == 'mailTemplates') {
                $pathTemplates = $pathProcesses . 'mailTemplates' . PATH_SEP . $paths[1] . PATH_SEP;
                $fsFile = $pathTemplates . $paths[3];
                if (count($paths) == 4 && file_exists($fsFile)) {
                    $fp = fopen($fsFile, "w");
                    if (is_resource($fp) && is_resource($options["stream"])) {
                        while (!feof($options["stream"])) {
                            fwrite($fp, fread($options["stream"], 4096));
                        }
                        fclose($fp);
                        fclose($options["stream"]);
                    }
                    return "201 Created " . $fsFile;
                }
            }

            if ($paths[2] == 'public_html') {
                $pathPublic = $pathProcesses . 'public' . PATH_SEP . $paths[1] . PATH_SEP;
                $fsFile = $pathPublic . $paths[3];
                if (count($paths) == 4 && file_exists($fsFile)) {
                    $fp = fopen($fsFile, "w");
                    if (is_resource($fp) && is_resource($options["stream"])) {
                        while (!feof($options["stream"])) {
                            fwrite($fp, fread($options["stream"], 4096));
                        }
                        fclose($fp);
                        fclose($options["stream"]);
                    }
                    return "201 Created " . $fsFile;
                }
            }
        }

        return "409 Conflict";
    }

    /**
     * MKCOL method handler
     *
     * @param array general parameter passing array
     * @return bool true on success
     */
    public function MKCOL($options)
    {
        $path = $this->base . $options["path"];
        $parent = dirname($path);
        $name = basename($path);

        if (!file_exists($parent)) {
            return "409 Conflict";
        }

        if (!is_dir($parent)) {
            return "403 Forbidden";
        }

        if (file_exists($parent . "/" . $name)) {
            return "405 Method not allowed";
        }

        if (!empty($_SERVER["CONTENT_LENGTH"])) {
            // no body parsing yet
            return "415 Unsupported media type";
        }

        $stat = mkdir($parent . "/" . $name, 0777);
        if (!$stat) {
            return "403 Forbidden";
        }

        return ("201 Created");
    }

    /**
     * DELETE method handler
     *
     * @param array general parameter passing array
     * @return bool true on success
     */
    public function DELETE($options)
    {
        $path = $this->base . "/" . $options["path"];

        if (!file_exists($path)) {
            return "404 Not found";
        }

        if (is_dir($path)) {
            $query = "DELETE FROM properties WHERE path LIKE '" . $this->_slashify($options["path"]) . "%'";
            mysql_query($query);
            System::rm("-rf $path");
        } else {
            unlink($path);
        }
        $query = "DELETE FROM properties WHERE path = '$options[path]'";
        mysql_query($query);

        return "204 No Content";
    }

    /**
     * MOVE method handler
     *
     * @param array general parameter passing array
     * @return bool true on success
     */
    public function MOVE($options)
    {
        return "423 Locked";
        //return $this->COPY($options, true);
    }

    /**
     * COPY method handler
     *
     * @param array general parameter passing array
     * @return bool true on success
     */
    public function COPY($options, $del = false)
    {
        // TODO Property updates still broken (Litmus should detect this?)


        if (!empty($_SERVER["CONTENT_LENGTH"])) {
            // no body parsing yet
            return "415 Unsupported media type";
        }

        // no copying to different WebDAV Servers yet
        if (isset($options["dest_url"])) {
            return "502 bad gateway";
        }

        $source = $this->base . $options["path"];
        if (!file_exists($source)) {
            return "404 Not found";
        }

        $dest = $this->base . $options["dest"];

        $new = !file_exists($dest);
        $existing_col = false;

        if (!$new) {
            if ($del && is_dir($dest)) {
                if (!$options["overwrite"]) {
                    return "412 precondition failed";
                }
                $dest .= basename($source);
                if (file_exists($dest)) {
                    $options["dest"] .= basename($source);
                } else {
                    $new = true;
                    $existing_col = true;
                }
            }
        }

        if (!$new) {
            if ($options["overwrite"]) {
                $stat = $this->DELETE(array("path" => $options["dest"]
                        ));
                if (($stat{0} != "2") && (substr($stat, 0, 3) != "404")) {
                    return $stat;
                }
            } else {
                return "412 precondition failed";
            }
        }

        if (is_dir($source) && ($options["depth"] != "infinity")) {
            // RFC 2518 Section 9.2, last paragraph
            return "400 Bad request";
        }

        if ($del) {
            if (!rename($source, $dest)) {
                return "500 Internal server error";
            }
            $destpath = $this->_unslashify($options["dest"]);
            if (is_dir($source)) {
                $query = "UPDATE properties
                  SET path = REPLACE(path, '" . $options["path"] . "', '" . $destpath . "')
                  WHERE path LIKE '" . $this->_slashify($options["path"]) . "%'";
                mysql_query($query);
            }

            $query = "UPDATE properties
                SET path = '" . $destpath . "'
                WHERE path = '" . $options["path"] . "'";
            mysql_query($query);
        } else {
            if (is_dir($source)) {
                $files = System::find($source);
                $files = array_reverse($files);
            } else {
                $files = array($source
                );
            }

            if (!is_array($files) || empty($files)) {
                return "500 Internal server error";
            }

            foreach ($files as $file) {
                if (is_dir($file)) {
                    $file = $this->_slashify($file);
                }

                $destfile = str_replace($source, $dest, $file);

                if (is_dir($file)) {
                    if (!is_dir($destfile)) {
                        // TODO "mkdir -p" here? (only natively supported by PHP 5)
                        if (!mkdir($destfile)) {
                            return "409 Conflict";
                        }
                    } else {
                        error_log("existing dir '$destfile'");
                    }
                } else {
                    if (!copy($file, $destfile)) {
                        return "409 Conflict";
                    }
                }
            }

            $query = "INSERT INTO properties SELECT ... FROM properties WHERE path = '" . $options['path'] . "'";
        }

        return ($new && !$existing_col) ? "201 Created" : "204 No Content";
    }

    /**
     * LOCK method handler
     *
     * @param array general parameter passing array
     * @return bool true on success
     */
    public function LOCK(&$options)
    {
        if (isset($options["update"])) {
            // Lock Update
            $query = "UPDATE locks SET expires = " . (time() + 300);
            mysql_query($query);

            if (mysql_affected_rows()) {
                $options["timeout"] = 300; // 5min hardcoded
                return true;
            } else {
                return false;
            }
        }

        $options["timeout"] = time() + 300; // 5min. hardcoded


        $query = "INSERT INTO locks
                SET token   = '$options[locktoken]'
                  , path    = '$options[path]'
                  , owner   = '$options[owner]'
                  , expires = '$options[timeout]'
                  , exclusivelock  = " . ($options['scope'] === "exclusive" ? "1" : "0");
        mysql_query($query);

        return mysql_affected_rows() ? "200 OK" : "409 Conflict";
    }

    /**
     * UNLOCK method handler
     *
     * @param array general parameter passing array
     * @return bool true on success
     */
    public function UNLOCK(&$options)
    {
        $query = "DELETE FROM locks
              WHERE path = '$options[path]'
              AND token  = '$options[token]'";
        mysql_query($query);

        return mysql_affected_rows() ? "204 No Content" : "409 Conflict";
    }

    /**
     * checkLock() helper
     *
     * @param string resource path to check for locks
     * @return bool true on success
     */
    public function checkLock($path)
    {
        G::LoadSystem('inputfilter');
        $filter = new InputFilter();
        $path = $filter->validateInput($path, 'nosql');
        $result = false;

        $query = "SELECT owner, token, expires, exclusivelock
              FROM locks
            WHERE path = '%s' ";
        $query = $filter->preventSqlInjection($query, array($path));
        $res = mysql_query($query);

        if ($res) {
            $row = mysql_fetch_array($res);
            mysql_free_result($res);

            if ($row) {
                $result = array("type" => "write", "scope" => $row["exclusivelock"] ? "exclusive" : "shared", "depth" => 0, "owner" => $row['owner'], "token" => $row['token'], "expires" => $row['expires']
                );
            }
        }

        return $result;
    }

    /**
     * create database tables for property and lock storage
     *
     * @param void
     * @return bool true on success
     */
    public function create_database()
    {
        // TODO
        return false;
    }
}