forked from extern/egroupware
286 lines
9.1 KiB
PHP
286 lines
9.1 KiB
PHP
|
<?php // $Id: _parse_propfind.php 246152 2007-11-14 10:49:27Z hholzgra $
|
||
|
|
/*
|
||
|
|
+----------------------------------------------------------------------+
|
||
|
|
| 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 PROPFIND request bodies
|
||
|
|
*
|
||
|
|
* @package HTTP_WebDAV_Server
|
||
|
|
* @author Hartmut Holzgraefe <hholzgra@php.net>
|
||
|
|
* @version @package-version@
|
||
|
|
*/
|
||
|
|
class _parse_propfind
|
||
|
|
{
|
||
|
|
/**
|
||
|
|
* success state flag
|
||
|
|
*
|
||
|
|
* @var bool
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
var $success = false;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* found properties are collected here
|
||
|
|
*
|
||
|
|
* @var array
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
var $props = false;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* found (CalDAV) filters are collected here
|
||
|
|
*
|
||
|
|
* @var array
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
var $filters = false;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* found other tags, eg. CalDAV calendar-multiget href's
|
||
|
|
*
|
||
|
|
* @var array
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
var $other = false;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* what we are currently parsing: props or filters
|
||
|
|
*
|
||
|
|
* @var array
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $use = 'props';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Root tag, usually 'propfind' for PROPFIND, but can be eg. 'calendar-query' or 'calendar-multiget' for CalDAV REPORT
|
||
|
|
*
|
||
|
|
* @var array with keys 'name' and 'ns'
|
||
|
|
*/
|
||
|
|
var $root;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* internal tag nesting depth counter
|
||
|
|
*
|
||
|
|
* @var int
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
var $depth = 0;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* On return whole request, if $store_request == true was specified in constructor
|
||
|
|
*
|
||
|
|
* @var string
|
||
|
|
*/
|
||
|
|
var $request;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* constructor
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @param string $path
|
||
|
|
* @param boolean $store_request=false if true whole request data will be made available in $this->request
|
||
|
|
*/
|
||
|
|
function _parse_propfind($path, $store_request=false)
|
||
|
|
{
|
||
|
|
// success state flag
|
||
|
|
$this->success = true;
|
||
|
|
|
||
|
|
// property storage array
|
||
|
|
$this->props = array();
|
||
|
|
|
||
|
|
// internal tag depth counter
|
||
|
|
$this->depth = 0;
|
||
|
|
|
||
|
|
// remember if any input was parsed
|
||
|
|
$had_input = false;
|
||
|
|
|
||
|
|
// open input stream
|
||
|
|
$f_in = fopen($path, "r");
|
||
|
|
if (!$f_in) {
|
||
|
|
$this->success = false;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// create XML 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,'_charData')
|
||
|
|
);
|
||
|
|
|
||
|
|
// 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 ($store_request) $this->request .= $line;
|
||
|
|
if (is_string($line)) {
|
||
|
|
$had_input = true;
|
||
|
|
$this->success &= xml_parse($xml_parser, $line, false);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// finish parsing
|
||
|
|
if ($had_input) {
|
||
|
|
$this->success &= xml_parse($xml_parser, "", true);
|
||
|
|
}
|
||
|
|
|
||
|
|
// free parser
|
||
|
|
xml_parser_free($xml_parser);
|
||
|
|
|
||
|
|
// close input stream
|
||
|
|
fclose($f_in);
|
||
|
|
|
||
|
|
// if no input was parsed it was a request
|
||
|
|
if(!count($this->props)) $this->props = "all"; // default
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* start tag handler
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
* @param resource parser
|
||
|
|
* @param string tag name
|
||
|
|
* @param array tag attributes
|
||
|
|
*/
|
||
|
|
function _startElement($parser, $name, $attrs)
|
||
|
|
{
|
||
|
|
// name space handling
|
||
|
|
if (strstr($name, " ")) {
|
||
|
|
list($ns, $tag) = explode(" ", $name);
|
||
|
|
if ($ns == "")
|
||
|
|
$this->success = false;
|
||
|
|
} else {
|
||
|
|
$ns = "";
|
||
|
|
$tag = $name;
|
||
|
|
}
|
||
|
|
|
||
|
|
// record root tag
|
||
|
|
if ($this->depth == 0) {
|
||
|
|
$this->root = array('name' => $tag, 'xmlns' => $ns, 'attrs' => $attrs);
|
||
|
|
}
|
||
|
|
// special tags at level 1: <allprop> and <propname>
|
||
|
|
if ($this->depth == 1) {
|
||
|
|
$this->use = 'props';
|
||
|
|
switch ($tag)
|
||
|
|
{
|
||
|
|
case "allprop":
|
||
|
|
$this->props = "all";
|
||
|
|
break;
|
||
|
|
case "propname":
|
||
|
|
$this->props = "names";
|
||
|
|
break;
|
||
|
|
case 'prop':
|
||
|
|
break;
|
||
|
|
case 'filter':
|
||
|
|
$this->use = 'filters';
|
||
|
|
$this->filters['attrs'] = $attrs; // need attrs eg. <filters test="(anyof|alloff)">
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
$this->use = 'other';
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//echo "$this->depth: use=$this->use $ns:$tag attrs=".array2string($attrs)."\n";
|
||
|
|
|
||
|
|
// requested properties are found at level 2
|
||
|
|
// CalDAV filters can be at deeper levels too and we need the attrs, same for other tags (eg. multiget href's)
|
||
|
|
if ($this->depth == 2 || $this->use == 'filters' && $this->depth >= 2 || $this->use == 'other' ||
|
||
|
|
$this->use == 'props' && $this->depth >= 2) {
|
||
|
|
$prop = array("name" => $tag);
|
||
|
|
if ($ns)
|
||
|
|
$prop["xmlns"] = $ns;
|
||
|
|
if ($this->use != 'props' || $this->depth > 2) {
|
||
|
|
$prop['attrs'] = $attrs;
|
||
|
|
$prop['depth'] = $this->depth;
|
||
|
|
}
|
||
|
|
// collect sub-elements of props in the original props children attribute
|
||
|
|
// eg. required for CalDAV <calendar-data><expand start="..." end="..."/></calendar-data>
|
||
|
|
if ($this->use == 'props' && $this->depth > 2)
|
||
|
|
{
|
||
|
|
$this->last_prop['children'][$tag] = $prop;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// this can happen if we have allprop and prop in one propfind:
|
||
|
|
// <allprop /><prop><blah /></prop>, eg. blah is not automatic returned by allprop
|
||
|
|
if (!is_array($this->{$this->use}) && $this->{$this->use}) $this->{$this->use} = array($this->{$this->use});
|
||
|
|
$this->{$this->use}[] =& $prop;
|
||
|
|
$this->last_prop =& $prop;
|
||
|
|
unset($prop);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// increment depth count
|
||
|
|
$this->depth++;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* end tag handler
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
* @param resource parser
|
||
|
|
* @param string tag name
|
||
|
|
*/
|
||
|
|
function _endElement($parser, $name)
|
||
|
|
{
|
||
|
|
// here we only need to decrement the depth count
|
||
|
|
$this->depth--;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* char data handler for non prop tags, eg. href's in CalDAV multiget, or filter contents
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
* @param resource parser
|
||
|
|
* @param string character data
|
||
|
|
*/
|
||
|
|
function _charData($parser, $data)
|
||
|
|
{
|
||
|
|
if ($this->use != 'props' && ($n = count($this->{$this->use})) && ($data = trim($data))) {
|
||
|
|
$this->{$this->use}[$n-1]['data'] = $data;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|