diff options
Diffstat (limited to 'inc/HTTP/WebDAV/Tools/_parse_lockinfo.php')
| -rwxr-xr-x | inc/HTTP/WebDAV/Tools/_parse_lockinfo.php | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/inc/HTTP/WebDAV/Tools/_parse_lockinfo.php b/inc/HTTP/WebDAV/Tools/_parse_lockinfo.php new file mode 100755 index 00000000000..3b32e2ff612 --- /dev/null +++ b/inc/HTTP/WebDAV/Tools/_parse_lockinfo.php @@ -0,0 +1,237 @@ +<?php +// +// +----------------------------------------------------------------------+ +// | PHP Version 4 | +// +----------------------------------------------------------------------+ +// | Copyright (c) 1997-2003 The PHP Group | +// +----------------------------------------------------------------------+ +// | This source file is subject to version 2.02 of the PHP license, | +// | that is bundled with this package in the file LICENSE, and is | +// | available at through the world-wide-web at | +// | http://www.php.net/license/2_02.txt. | +// | If you did not receive a copy of the PHP license and are unable to | +// | obtain it through the world-wide-web, please send a note to | +// | license@php.net so we can mail you a copy immediately. | +// +----------------------------------------------------------------------+ +// | Authors: Hartmut Holzgraefe <hholzgra@php.net> | +// | Christian Stocker <chregu@bitflux.ch> | +// +----------------------------------------------------------------------+ +// +// $Id: _parse_lockinfo.php,v 1.2 2004/01/05 12:32:40 hholzgra Exp $ +// + +/** + * helper class for parsing LOCK request bodies + * + * @package HTTP_WebDAV_Server + * @author Hartmut Holzgraefe <hholzgra@php.net> + * @version 0.99.1dev + */ +class _parse_lockinfo +{ + /** + * success state flag + * + * @var bool + * @access public + */ + var $success = false; + + /** + * lock type, currently only "write" + * + * @var string + * @access public + */ + var $locktype = ""; + + /** + * lock scope, "shared" or "exclusive" + * + * @var string + * @access public + */ + var $lockscope = ""; + + /** + * lock owner information + * + * @var string + * @access public + */ + var $owner = ""; + + /** + * flag that is set during lock owner read + * + * @var bool + * @access private + */ + var $collect_owner = false; + + /** + * constructor + * + * @param string path of stream to read + * @access public + */ + function _parse_lockinfo($path) + { + // we assume success unless problems occur + $this->success = true; + + // remember if any input was parsed + $had_input = false; + + // open stream + $f_in = fopen($path, "r"); + if (!$f_in) { + $this->success = false; + return; + } + + // create namespace aware parser + $xml_parser = xml_parser_create_ns("UTF-8", " "); + + // set tag and data handlers + xml_set_element_handler($xml_parser, + array(&$this, "_startElement"), + array(&$this, "_endElement")); + xml_set_character_data_handler($xml_parser, + array(&$this, "_data")); + + // we want a case sensitive parser + xml_parser_set_option($xml_parser, + XML_OPTION_CASE_FOLDING, false); + + // parse input + while($this->success && !feof($f_in)) { + $line = fgets($f_in); + if (is_string($line)) { + $had_input = true; + $this->success &= xml_parse($xml_parser, $line, false); + } + } + + // finish parsing + if($had_input) { + $this->success &= xml_parse($xml_parser, "", true); + } + + // check if required tags where found + $this->success &= !empty($this->locktype); + $this->success &= !empty($this->lockscope); + + // free parser resource + xml_parser_free($xml_parser); + + // close input stream + fclose($f_in); + } + + + /** + * tag start handler + * + * @param resource parser + * @param string tag name + * @param array tag attributes + * @return void + * @access private + */ + function _startElement($parser, $name, $attrs) + { + // namespace handling + if (strstr($name, " ")) { + list($ns, $tag) = explode(" ", $name); + } else { + $ns = ""; + $tag = $name; + } + + + if ($this->collect_owner) { + // everything within the <owner> tag needs to be collected + $ns_short = ""; + $ns_attr = ""; + if ($ns) { + if ($ns == "DAV:") { + $ns_short = "D:"; + } else { + $ns_attr = " xmlns='$ns'"; + } + } + $this->owner .= "<$ns_short$tag$ns_attr>"; + } else if ($ns == "DAV:") { + // parse only the essential tags + switch ($tag) { + case "write": + $this->locktype = $tag; + break; + case "exclusive": + case "shared": + $this->lockscope = $tag; + break; + case "owner": + $this->collect_owner = true; + break; + } + } + } + + /** + * data handler + * + * @param resource parser + * @param string data + * @return void + * @access private + */ + function _data($parser, $data) + { + // only the <owner> tag has data content + if ($this->collect_owner) { + $this->owner .= $data; + } + } + + /** + * tag end handler + * + * @param resource parser + * @param string tag name + * @return void + * @access private + */ + function _endElement($parser, $name) + { + // namespace handling + if (strstr($name, " ")) { + list($ns, $tag) = explode(" ", $name); + } else { + $ns = ""; + $tag = $name; + } + + // <owner> finished? + if (($ns == "DAV:") && ($tag == "owner")) { + $this->collect_owner = false; + } + + // within <owner> we have to collect everything + if ($this->collect_owner) { + $ns_short = ""; + $ns_attr = ""; + if ($ns) { + if ($ns == "DAV:") { + $ns_short = "D:"; + } else { + $ns_attr = " xmlns='$ns'"; + } + } + $this->owner .= "</$ns_short$tag$ns_attr>"; + } + } +} + +?>
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