251 lines
7.4 KiB
PHP
251 lines
7.4 KiB
PHP
<?php // $Id$
|
|
/*
|
|
+----------------------------------------------------------------------+
|
|
| Copyright (c) 2002-2007 Christian Stocker, Hartmut Holzgraefe |
|
|
| All rights reserved |
|
|
| |
|
|
| Redistribution and use in source and binary forms, with or without |
|
|
| modification, are permitted provided that the following conditions |
|
|
| are met: |
|
|
| |
|
|
| 1. Redistributions of source code must retain the above copyright |
|
|
| notice, this list of conditions and the following disclaimer. |
|
|
| 2. Redistributions in binary form must reproduce the above copyright |
|
|
| notice, this list of conditions and the following disclaimer in |
|
|
| the documentation and/or other materials provided with the |
|
|
| distribution. |
|
|
| 3. The names of the authors may not be used to endorse or promote |
|
|
| products derived from this software without specific prior |
|
|
| written permission. |
|
|
| |
|
|
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
|
|
| "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
|
|
| LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
|
|
| FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
|
|
| COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
|
|
| INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
|
|
| BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
|
|
| LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
|
|
| CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
|
|
| LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
|
|
| ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
|
|
| POSSIBILITY OF SUCH DAMAGE. |
|
|
+----------------------------------------------------------------------+
|
|
*/
|
|
|
|
|
|
/**
|
|
* helper class for parsing LOCK request bodies
|
|
*
|
|
* @package HTTP_WebDAV_Server
|
|
* @author Hartmut Holzgraefe <hholzgra@php.net>
|
|
* @version @package-version@
|
|
*/
|
|
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>";
|
|
}
|
|
}
|
|
}
|
|
|
|
?>
|