forked from GNUsocial/gnu-social
676 lines
27 KiB
PHP
676 lines
27 KiB
PHP
<?php
|
|
/* vim: set expandtab tabstop=4 shiftwidth=4: */
|
|
/**
|
|
* File containing the Net_LDAP2_Filter interface class.
|
|
*
|
|
* PHP version 5
|
|
*
|
|
* @category Net
|
|
* @package Net_LDAP2
|
|
* @author Benedikt Hallinger <beni@php.net>
|
|
* @copyright 2009 Benedikt Hallinger
|
|
* @license http://www.gnu.org/licenses/lgpl-3.0.txt LGPLv3
|
|
* @version SVN: $Id: Filter.php 332305 2013-12-09 08:51:41Z beni $
|
|
* @link http://pear.php.net/package/Net_LDAP2/
|
|
*/
|
|
|
|
/**
|
|
* Includes
|
|
*/
|
|
require_once 'PEAR.php';
|
|
require_once 'Net/LDAP2/Util.php';
|
|
require_once 'Net/LDAP2/Entry.php';
|
|
|
|
/**
|
|
* Object representation of a part of a LDAP filter.
|
|
*
|
|
* This Class is not completely compatible to the PERL interface!
|
|
*
|
|
* The purpose of this class is, that users can easily build LDAP filters
|
|
* without having to worry about right escaping etc.
|
|
* A Filter is built using several independent filter objects
|
|
* which are combined afterwards. This object works in two
|
|
* modes, depending how the object is created.
|
|
* If the object is created using the {@link create()} method, then this is a leaf-object.
|
|
* If the object is created using the {@link combine()} method, then this is a container object.
|
|
*
|
|
* LDAP filters are defined in RFC-2254 and can be found under
|
|
* {@link http://www.ietf.org/rfc/rfc2254.txt}
|
|
*
|
|
* Here a quick copy&paste example:
|
|
* <code>
|
|
* $filter0 = Net_LDAP2_Filter::create('stars', 'equals', '***');
|
|
* $filter_not0 = Net_LDAP2_Filter::combine('not', $filter0);
|
|
*
|
|
* $filter1 = Net_LDAP2_Filter::create('gn', 'begins', 'bar');
|
|
* $filter2 = Net_LDAP2_Filter::create('gn', 'ends', 'baz');
|
|
* $filter_comp = Net_LDAP2_Filter::combine('or',array($filter_not0, $filter1, $filter2));
|
|
*
|
|
* echo $filter_comp->asString();
|
|
* // This will output: (|(!(stars=\0x5c0x2a\0x5c0x2a\0x5c0x2a))(gn=bar*)(gn=*baz))
|
|
* // The stars in $filter0 are treaten as real stars unless you disable escaping.
|
|
* </code>
|
|
*
|
|
* @category Net
|
|
* @package Net_LDAP2
|
|
* @author Benedikt Hallinger <beni@php.net>
|
|
* @license http://www.gnu.org/copyleft/lesser.html LGPL
|
|
* @link http://pear.php.net/package/Net_LDAP2/
|
|
*/
|
|
class Net_LDAP2_Filter extends PEAR
|
|
{
|
|
/**
|
|
* Storage for combination of filters
|
|
*
|
|
* This variable holds a array of filter objects
|
|
* that should be combined by this filter object.
|
|
*
|
|
* @access protected
|
|
* @var array
|
|
*/
|
|
protected $_subfilters = array();
|
|
|
|
/**
|
|
* Match of this filter
|
|
*
|
|
* If this is a leaf filter, then a matching rule is stored,
|
|
* if it is a container, then it is a logical operator
|
|
*
|
|
* @access protected
|
|
* @var string
|
|
*/
|
|
protected $_match;
|
|
|
|
/**
|
|
* Single filter
|
|
*
|
|
* If we operate in leaf filter mode,
|
|
* then the constructing method stores
|
|
* the filter representation here
|
|
*
|
|
* @acces private
|
|
* @var string
|
|
*/
|
|
protected $_filter;
|
|
|
|
/**
|
|
* Create a new Net_LDAP2_Filter object and parse $filter.
|
|
*
|
|
* This is for PERL Net::LDAP interface.
|
|
* Construction of Net_LDAP2_Filter objects should happen through either
|
|
* {@link create()} or {@link combine()} which give you more control.
|
|
* However, you may use the perl iterface if you already have generated filters.
|
|
*
|
|
* @param string $filter LDAP filter string
|
|
*
|
|
* @see parse()
|
|
*/
|
|
public function __construct($filter = false)
|
|
{
|
|
// The optional parameter must remain here, because otherwise create() crashes
|
|
if (false !== $filter) {
|
|
$filter_o = self::parse($filter);
|
|
if (PEAR::isError($filter_o)) {
|
|
$this->_filter = $filter_o; // assign error, so asString() can report it
|
|
} else {
|
|
$this->_filter = $filter_o->asString();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Constructor of a new part of a LDAP filter.
|
|
*
|
|
* The following matching rules exists:
|
|
* - equals: One of the attributes values is exactly $value
|
|
* Please note that case sensitiviness is depends on the
|
|
* attributes syntax configured in the server.
|
|
* - begins: One of the attributes values must begin with $value
|
|
* - ends: One of the attributes values must end with $value
|
|
* - contains: One of the attributes values must contain $value
|
|
* - present | any: The attribute can contain any value but must be existent
|
|
* - greater: The attributes value is greater than $value
|
|
* - less: The attributes value is less than $value
|
|
* - greaterOrEqual: The attributes value is greater or equal than $value
|
|
* - lessOrEqual: The attributes value is less or equal than $value
|
|
* - approx: One of the attributes values is similar to $value
|
|
*
|
|
* Negation ("not") can be done by prepending the above operators with the
|
|
* "not" or "!" keyword, see example below.
|
|
*
|
|
* If $escape is set to true (default) then $value will be escaped
|
|
* properly. If it is set to false then $value will be treaten as raw filter value string.
|
|
* You should escape yourself using {@link Net_LDAP2_Util::escape_filter_value()}!
|
|
*
|
|
* Examples:
|
|
* <code>
|
|
* // This will find entries that contain an attribute "sn" that ends with "foobar":
|
|
* $filter = Net_LDAP2_Filter::create('sn', 'ends', 'foobar');
|
|
*
|
|
* // This will find entries that contain an attribute "sn" that has any value set:
|
|
* $filter = Net_LDAP2_Filter::create('sn', 'any');
|
|
*
|
|
* // This will build a negated equals filter:
|
|
* $filter = Net_LDAP2_Filter::create('sn', 'not equals', 'foobar');
|
|
* </code>
|
|
*
|
|
* @param string $attr_name Name of the attribute the filter should apply to
|
|
* @param string $match Matching rule (equals, begins, ends, contains, greater, less, greaterOrEqual, lessOrEqual, approx, any)
|
|
* @param string $value (optional) if given, then this is used as a filter
|
|
* @param boolean $escape Should $value be escaped? (default: yes, see {@link Net_LDAP2_Util::escape_filter_value()} for detailed information)
|
|
*
|
|
* @return Net_LDAP2_Filter|Net_LDAP2_Error
|
|
*/
|
|
public static function &create($attr_name, $match, $value = '', $escape = true)
|
|
{
|
|
$leaf_filter = new Net_LDAP2_Filter();
|
|
if ($escape) {
|
|
$array = Net_LDAP2_Util::escape_filter_value(array($value));
|
|
$value = $array[0];
|
|
}
|
|
|
|
$match = strtolower($match);
|
|
|
|
// detect negation
|
|
$neg_matches = array();
|
|
$negate_filter = false;
|
|
if (preg_match('/^(?:not|!)[\s_-](.+)/', $match, $neg_matches)) {
|
|
$negate_filter = true;
|
|
$match = $neg_matches[1];
|
|
}
|
|
|
|
// build basic filter
|
|
switch ($match) {
|
|
case 'equals':
|
|
case '=':
|
|
case '==':
|
|
$leaf_filter->_filter = '(' . $attr_name . '=' . $value . ')';
|
|
break;
|
|
case 'begins':
|
|
$leaf_filter->_filter = '(' . $attr_name . '=' . $value . '*)';
|
|
break;
|
|
case 'ends':
|
|
$leaf_filter->_filter = '(' . $attr_name . '=*' . $value . ')';
|
|
break;
|
|
case 'contains':
|
|
$leaf_filter->_filter = '(' . $attr_name . '=*' . $value . '*)';
|
|
break;
|
|
case 'greater':
|
|
case '>':
|
|
$leaf_filter->_filter = '(' . $attr_name . '>' . $value . ')';
|
|
break;
|
|
case 'less':
|
|
case '<':
|
|
$leaf_filter->_filter = '(' . $attr_name . '<' . $value . ')';
|
|
break;
|
|
case 'greaterorequal':
|
|
case '>=':
|
|
$leaf_filter->_filter = '(' . $attr_name . '>=' . $value . ')';
|
|
break;
|
|
case 'lessorequal':
|
|
case '<=':
|
|
$leaf_filter->_filter = '(' . $attr_name . '<=' . $value . ')';
|
|
break;
|
|
case 'approx':
|
|
case '~=':
|
|
$leaf_filter->_filter = '(' . $attr_name . '~=' . $value . ')';
|
|
break;
|
|
case 'any':
|
|
case 'present': // alias that may improve user code readability
|
|
$leaf_filter->_filter = '(' . $attr_name . '=*)';
|
|
break;
|
|
default:
|
|
return PEAR::raiseError('Net_LDAP2_Filter create error: matching rule "' . $match . '" not known!');
|
|
}
|
|
|
|
// negate if requested
|
|
if ($negate_filter) {
|
|
$leaf_filter = Net_LDAP2_Filter::combine('!', $leaf_filter);
|
|
}
|
|
|
|
return $leaf_filter;
|
|
}
|
|
|
|
/**
|
|
* Combine two or more filter objects using a logical operator
|
|
*
|
|
* This static method combines two or more filter objects and returns one single
|
|
* filter object that contains all the others.
|
|
* Call this method statically: $filter = Net_LDAP2_Filter::combine('or', array($filter1, $filter2))
|
|
* If the array contains filter strings instead of filter objects, we will try to parse them.
|
|
*
|
|
* @param string $log_op The locical operator. May be "and", "or", "not" or the subsequent logical equivalents "&", "|", "!"
|
|
* @param array|Net_LDAP2_Filter $filters array with Net_LDAP2_Filter objects
|
|
*
|
|
* @return Net_LDAP2_Filter|Net_LDAP2_Error
|
|
* @static
|
|
*/
|
|
public static function &combine($log_op, $filters)
|
|
{
|
|
if (PEAR::isError($filters)) {
|
|
return $filters;
|
|
}
|
|
|
|
// substitude named operators to logical operators
|
|
if ($log_op == 'and') $log_op = '&';
|
|
if ($log_op == 'or') $log_op = '|';
|
|
if ($log_op == 'not') $log_op = '!';
|
|
|
|
// tests for sane operation
|
|
if ($log_op == '!') {
|
|
// Not-combination, here we only accept one filter object or filter string
|
|
if ($filters instanceof Net_LDAP2_Filter) {
|
|
$filters = array($filters); // force array
|
|
} elseif (is_string($filters)) {
|
|
$filter_o = self::parse($filters);
|
|
if (PEAR::isError($filter_o)) {
|
|
$err = PEAR::raiseError('Net_LDAP2_Filter combine error: '.$filter_o->getMessage());
|
|
return $err;
|
|
} else {
|
|
$filters = array($filter_o);
|
|
}
|
|
} elseif (is_array($filters)) {
|
|
if (count($filters) != 1) {
|
|
$err = PEAR::raiseError('Net_LDAP2_Filter combine error: operator is "not" but $filter is an array!');
|
|
return $err;
|
|
} elseif (!($filters[0] instanceof Net_LDAP2_Filter)) {
|
|
$err = PEAR::raiseError('Net_LDAP2_Filter combine error: operator is "not" but $filter is not a valid Net_LDAP2_Filter nor a filter string!');
|
|
return $err;
|
|
}
|
|
} else {
|
|
$err = PEAR::raiseError('Net_LDAP2_Filter combine error: operator is "not" but $filter is not a valid Net_LDAP2_Filter nor a filter string!');
|
|
return $err;
|
|
}
|
|
} elseif ($log_op == '&' || $log_op == '|') {
|
|
if (!is_array($filters) || count($filters) < 2) {
|
|
$err = PEAR::raiseError('Net_LDAP2_Filter combine error: parameter $filters is not an array or contains less than two Net_LDAP2_Filter objects!');
|
|
return $err;
|
|
}
|
|
} else {
|
|
$err = PEAR::raiseError('Net_LDAP2_Filter combine error: logical operator is not known!');
|
|
return $err;
|
|
}
|
|
|
|
$combined_filter = new Net_LDAP2_Filter();
|
|
foreach ($filters as $key => $testfilter) { // check for errors
|
|
if (PEAR::isError($testfilter)) {
|
|
return $testfilter;
|
|
} elseif (is_string($testfilter)) {
|
|
// string found, try to parse into an filter object
|
|
$filter_o = self::parse($testfilter);
|
|
if (PEAR::isError($filter_o)) {
|
|
return $filter_o;
|
|
} else {
|
|
$filters[$key] = $filter_o;
|
|
}
|
|
} elseif (!$testfilter instanceof Net_LDAP2_Filter) {
|
|
$err = PEAR::raiseError('Net_LDAP2_Filter combine error: invalid object passed in array $filters!');
|
|
return $err;
|
|
}
|
|
}
|
|
|
|
$combined_filter->_subfilters = $filters;
|
|
$combined_filter->_match = $log_op;
|
|
return $combined_filter;
|
|
}
|
|
|
|
/**
|
|
* Parse FILTER into a Net_LDAP2_Filter object
|
|
*
|
|
* This parses an filter string into Net_LDAP2_Filter objects.
|
|
*
|
|
* @param string $FILTER The filter string
|
|
*
|
|
* @access static
|
|
* @return Net_LDAP2_Filter|Net_LDAP2_Error
|
|
* @todo Leaf-mode: Do we need to escape at all? what about *-chars?check for the need of encoding values, tackle problems (see code comments)
|
|
*/
|
|
public static function parse($FILTER)
|
|
{
|
|
if (preg_match('/^\((.+?)\)$/', $FILTER, $matches)) {
|
|
// Check for right bracket syntax: count of unescaped opening
|
|
// brackets must match count of unescaped closing brackets.
|
|
// At this stage we may have:
|
|
// 1. one filter component with already removed outer brackets
|
|
// 2. one or more subfilter components
|
|
$c_openbracks = preg_match_all('/(?<!\\\\)\(/' , $matches[1], $notrelevant);
|
|
$c_closebracks = preg_match_all('/(?<!\\\\)\)/' , $matches[1], $notrelevant);
|
|
if ($c_openbracks != $c_closebracks) {
|
|
return PEAR::raiseError("Filter parsing error: invalid filter syntax - opening brackets do not match close brackets!");
|
|
}
|
|
|
|
if (in_array(substr($matches[1], 0, 1), array('!', '|', '&'))) {
|
|
// Subfilter processing: pass subfilters to parse() and combine
|
|
// the objects using the logical operator detected
|
|
// we have now something like "&(...)(...)(...)" but at least one part ("!(...)").
|
|
// Each subfilter could be an arbitary complex subfilter.
|
|
|
|
// extract logical operator and filter arguments
|
|
$log_op = substr($matches[1], 0, 1);
|
|
$remaining_component = substr($matches[1], 1);
|
|
|
|
// split $remaining_component into individual subfilters
|
|
// we cannot use split() for this, because we do not know the
|
|
// complexiness of the subfilter. Thus, we look trough the filter
|
|
// string and just recognize ending filters at the first level.
|
|
// We record the index number of the char and use that information
|
|
// later to split the string.
|
|
$sub_index_pos = array();
|
|
$prev_char = ''; // previous character looked at
|
|
$level = 0; // denotes the current bracket level we are,
|
|
// >1 is too deep, 1 is ok, 0 is outside any
|
|
// subcomponent
|
|
for ($curpos = 0; $curpos < strlen($remaining_component); $curpos++) {
|
|
$cur_char = substr($remaining_component, $curpos, 1);
|
|
|
|
// rise/lower bracket level
|
|
if ($cur_char == '(' && $prev_char != '\\') {
|
|
$level++;
|
|
} elseif ($cur_char == ')' && $prev_char != '\\') {
|
|
$level--;
|
|
}
|
|
|
|
if ($cur_char == '(' && $prev_char == ')' && $level == 1) {
|
|
array_push($sub_index_pos, $curpos); // mark the position for splitting
|
|
}
|
|
$prev_char = $cur_char;
|
|
}
|
|
|
|
// now perform the splits. To get also the last part, we
|
|
// need to add the "END" index to the split array
|
|
array_push($sub_index_pos, strlen($remaining_component));
|
|
$subfilters = array();
|
|
$oldpos = 0;
|
|
foreach ($sub_index_pos as $s_pos) {
|
|
$str_part = substr($remaining_component, $oldpos, $s_pos - $oldpos);
|
|
array_push($subfilters, $str_part);
|
|
$oldpos = $s_pos;
|
|
}
|
|
|
|
// some error checking...
|
|
if (count($subfilters) == 1) {
|
|
// only one subfilter found
|
|
} elseif (count($subfilters) > 1) {
|
|
// several subfilters found
|
|
if ($log_op == "!") {
|
|
return PEAR::raiseError("Filter parsing error: invalid filter syntax - NOT operator detected but several arguments given!");
|
|
}
|
|
} else {
|
|
// this should not happen unless the user specified a wrong filter
|
|
return PEAR::raiseError("Filter parsing error: invalid filter syntax - got operator '$log_op' but no argument!");
|
|
}
|
|
|
|
// Now parse the subfilters into objects and combine them using the operator
|
|
$subfilters_o = array();
|
|
foreach ($subfilters as $s_s) {
|
|
$o = self::parse($s_s);
|
|
if (PEAR::isError($o)) {
|
|
return $o;
|
|
} else {
|
|
array_push($subfilters_o, self::parse($s_s));
|
|
}
|
|
}
|
|
|
|
$filter_o = self::combine($log_op, $subfilters_o);
|
|
return $filter_o;
|
|
|
|
} else {
|
|
// This is one leaf filter component, do some syntax checks, then escape and build filter_o
|
|
// $matches[1] should be now something like "foo=bar"
|
|
|
|
// detect multiple leaf components
|
|
// [TODO] Maybe this will make problems with filters containing brackets inside the value
|
|
if (stristr($matches[1], ')(')) {
|
|
return PEAR::raiseError("Filter parsing error: invalid filter syntax - multiple leaf components detected!");
|
|
} else {
|
|
$filter_parts = Net_LDAP2_Util::split_attribute_string($matches[1], true, true);
|
|
if (count($filter_parts) != 3) {
|
|
return PEAR::raiseError("Filter parsing error: invalid filter syntax - unknown matching rule used");
|
|
} else {
|
|
$filter_o = new Net_LDAP2_Filter();
|
|
// [TODO]: Do we need to escape at all? what about *-chars user provide and that should remain special?
|
|
// I think, those prevent escaping! We need to check against PERL Net::LDAP!
|
|
// $value_arr = Net_LDAP2_Util::escape_filter_value(array($filter_parts[2]));
|
|
// $value = $value_arr[0];
|
|
$value = $filter_parts[2];
|
|
$filter_o->_filter = '('.$filter_parts[0].$filter_parts[1].$value.')';
|
|
return $filter_o;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
// ERROR: Filter components must be enclosed in round brackets
|
|
return PEAR::raiseError("Filter parsing error: invalid filter syntax - filter components must be enclosed in round brackets");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the string representation of this filter
|
|
*
|
|
* This method runs through all filter objects and creates
|
|
* the string representation of the filter. If this
|
|
* filter object is a leaf filter, then it will return
|
|
* the string representation of this filter.
|
|
*
|
|
* @return string|Net_LDAP2_Error
|
|
*/
|
|
public function asString()
|
|
{
|
|
if ($this->isLeaf()) {
|
|
$return = $this->_filter;
|
|
} else {
|
|
$return = '';
|
|
foreach ($this->_subfilters as $filter) {
|
|
$return = $return.$filter->asString();
|
|
}
|
|
$return = '(' . $this->_match . $return . ')';
|
|
}
|
|
return $return;
|
|
}
|
|
|
|
/**
|
|
* Alias for perl interface as_string()
|
|
*
|
|
* @see asString()
|
|
* @return string|Net_LDAP2_Error
|
|
*/
|
|
public function as_string()
|
|
{
|
|
return $this->asString();
|
|
}
|
|
|
|
/**
|
|
* Print the text representation of the filter to FH, or the currently selected output handle if FH is not given
|
|
*
|
|
* This method is only for compatibility to the perl interface.
|
|
* However, the original method was called "print" but due to PHP language restrictions,
|
|
* we can't have a print() method.
|
|
*
|
|
* @param resource $FH (optional) A filehandle resource
|
|
*
|
|
* @return true|Net_LDAP2_Error
|
|
*/
|
|
public function printMe($FH = false)
|
|
{
|
|
if (!is_resource($FH)) {
|
|
if (PEAR::isError($FH)) {
|
|
return $FH;
|
|
}
|
|
$filter_str = $this->asString();
|
|
if (PEAR::isError($filter_str)) {
|
|
return $filter_str;
|
|
} else {
|
|
print($filter_str);
|
|
}
|
|
} else {
|
|
$filter_str = $this->asString();
|
|
if (PEAR::isError($filter_str)) {
|
|
return $filter_str;
|
|
} else {
|
|
$res = @fwrite($FH, $this->asString());
|
|
if ($res == false) {
|
|
return PEAR::raiseError("Unable to write filter string to filehandle \$FH!");
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* This can be used to escape a string to provide a valid LDAP-Filter.
|
|
*
|
|
* LDAP will only recognise certain characters as the
|
|
* character istself if they are properly escaped. This is
|
|
* what this method does.
|
|
* The method can be called statically, so you can use it outside
|
|
* for your own purposes (eg for escaping only parts of strings)
|
|
*
|
|
* In fact, this is just a shorthand to {@link Net_LDAP2_Util::escape_filter_value()}.
|
|
* For upward compatibiliy reasons you are strongly encouraged to use the escape
|
|
* methods provided by the Net_LDAP2_Util class.
|
|
*
|
|
* @param string $value Any string who should be escaped
|
|
*
|
|
* @static
|
|
* @return string The string $string, but escaped
|
|
* @deprecated Do not use this method anymore, instead use Net_LDAP2_Util::escape_filter_value() directly
|
|
*/
|
|
public static function escape($value)
|
|
{
|
|
$return = Net_LDAP2_Util::escape_filter_value(array($value));
|
|
return $return[0];
|
|
}
|
|
|
|
/**
|
|
* Is this a container or a leaf filter object?
|
|
*
|
|
* @access protected
|
|
* @return boolean
|
|
*/
|
|
protected function isLeaf()
|
|
{
|
|
if (count($this->_subfilters) > 0) {
|
|
return false; // Container!
|
|
} else {
|
|
return true; // Leaf!
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Filter entries using this filter or see if a filter matches
|
|
*
|
|
* @todo Currently slow and naive implementation with preg_match, could be optimized (esp. begins, ends filters etc)
|
|
* @todo Currently only "="-based matches (equals, begins, ends, contains, any) implemented; Implement all the stuff!
|
|
* @todo Implement expert code with schema checks in case $entry is connected to a directory
|
|
* @param array|Net_LDAP2_Entry The entry (or array with entries) to check
|
|
* @param array If given, the array will be appended with entries who matched the filter. Return value is true if any entry matched.
|
|
* @return int|Net_LDAP2_Error Returns the number of matched entries or error
|
|
*/
|
|
function matches(&$entries, &$results=array()) {
|
|
$numOfMatches = 0;
|
|
|
|
if (!is_array($entries)) {
|
|
$all_entries = array(&$entries);
|
|
} else {
|
|
$all_entries = &$entries;
|
|
}
|
|
|
|
foreach ($all_entries as $entry) {
|
|
// look at the current entry and see if filter matches
|
|
|
|
$entry_matched = false;
|
|
// if this is not a single component, do calculate all subfilters,
|
|
// then assert the partial results with the given combination modifier
|
|
if (!$this->isLeaf()) {
|
|
|
|
// get partial results from subfilters
|
|
$partial_results = array();
|
|
foreach ($this->_subfilters as $filter) {
|
|
$partial_results[] = $filter->matches($entry);
|
|
}
|
|
|
|
// evaluate partial results using this filters combination rule
|
|
switch ($this->_match) {
|
|
case '!':
|
|
// result is the neagtive result of the assertion
|
|
$entry_matched = !$partial_results[0];
|
|
break;
|
|
|
|
case '&':
|
|
// all partial results have to be boolean-true
|
|
$entry_matched = !in_array(false, $partial_results);
|
|
break;
|
|
|
|
case '|':
|
|
// at least one partial result has to be true
|
|
$entry_matched = in_array(true, $partial_results);
|
|
break;
|
|
}
|
|
|
|
} else {
|
|
// Leaf filter: assert given entry
|
|
// [TODO]: Could be optimized to avoid preg_match especially with "ends", "begins" etc
|
|
|
|
// Translate the LDAP-match to some preg_match expression and evaluate it
|
|
list($attribute, $match, $assertValue) = $this->getComponents();
|
|
switch ($match) {
|
|
case '=':
|
|
$regexp = '/^'.str_replace('*', '.*', $assertValue).'$/i'; // not case sensitive unless specified by schema
|
|
$entry_matched = $entry->pregMatch($regexp, $attribute);
|
|
break;
|
|
|
|
// -------------------------------------
|
|
// [TODO]: implement <, >, <=, >= and =~
|
|
// -------------------------------------
|
|
|
|
default:
|
|
$err = PEAR::raiseError("Net_LDAP2_Filter match error: unsupported match rule '$match'!");
|
|
return $err;
|
|
}
|
|
|
|
}
|
|
|
|
// process filter matching result
|
|
if ($entry_matched) {
|
|
$numOfMatches++;
|
|
$results[] = $entry;
|
|
}
|
|
|
|
}
|
|
|
|
return $numOfMatches;
|
|
}
|
|
|
|
|
|
/**
|
|
* Retrieve this leaf-filters attribute, match and value component.
|
|
*
|
|
* For leaf filters, this returns array(attr, match, value).
|
|
* Match is be the logical operator, not the text representation,
|
|
* eg "=" instead of "equals". Note that some operators are really
|
|
* a combination of operator+value with wildcard, like
|
|
* "begins": That will return "=" with the value "value*"!
|
|
*
|
|
* For non-leaf filters this will drop an error.
|
|
*
|
|
* @todo $this->_match is not always available and thus not usable here; it would be great if it would set in the factory methods and constructor.
|
|
* @return array|Net_LDAP2_Error
|
|
*/
|
|
function getComponents() {
|
|
if ($this->isLeaf()) {
|
|
$raw_filter = preg_replace('/^\(|\)$/', '', $this->_filter);
|
|
$parts = Net_LDAP2_Util::split_attribute_string($raw_filter, true, true);
|
|
if (count($parts) != 3) {
|
|
return PEAR::raiseError("Net_LDAP2_Filter getComponents() error: invalid filter syntax - unknown matching rule used");
|
|
} else {
|
|
return $parts;
|
|
}
|
|
} else {
|
|
return PEAR::raiseError('Net_LDAP2_Filter getComponents() call is invalid for non-leaf filters!');
|
|
}
|
|
}
|
|
|
|
|
|
}
|
|
?>
|