PHPIDS
Current file: | /home/lstrojny/Projekte/php-ids/trunk/lib/IDS/Filter.php
Legend: | executed not executed dead code

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IDS_Filter |
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public function __construct($id, $rule, $description, array $tags, $impact) |
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public function match($string) |
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public function getDescription() |
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public function getTags() |
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public function getRule() |
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public function getImpact() |
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public function getId() |
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           1                 : <?php
           2                 :
           3                 : /**
           4                 :  * PHPIDS
           5                 :  *
           6                 :  * Requirements: PHP5, SimpleXML
           7                 :  *
           8                 :  * Copyright (c) 2008 PHPIDS group (http://php-ids.org)
           9                 :  *
          10                 :  * PHPIDS is free software; you can redistribute it and/or modify
          11                 :  * it under the terms of the GNU Lesser General Public License as published by
          12                 :  * the Free Software Foundation, version 3 of the License, or
          13                 :  * (at your option) any later version.
          14                 :  *
          15                 :  * PHPIDS is distributed in the hope that it will be useful,
          16                 :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
          17                 :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
          18                 :  * GNU Lesser General Public License for more details.
          19                 :  *
          20                 :  * You should have received a copy of the GNU Lesser General Public License
          21                 :  * along with PHPIDS. If not, see <http://www.gnu.org/licenses/>.
          22                 :  *
          23                 :  * PHP version 5.1.6+
          24                 :  *
          25                 :  * @category Security
          26                 :  * @package  PHPIDS
          27                 :  * @author   Mario Heiderich <mario.heiderich@gmail.com>
          28                 :  * @author   Christian Matthies <ch0012@gmail.com>
          29                 :  * @author   Lars Strojny <lars@strojny.net>
          30                 :  * @license  http://www.gnu.org/licenses/lgpl.html LGPL
          31                 :  * @link     http://php-ids.org/
          32                 :  */
          33                 :
          34                 : /**
          35                 :  * PHPIDS Filter object
          36                 :  *
          37                 :  * Each object of this class serves as a container for a specific filter. The
          38                 :  * object provides methods to get information about this particular filter and
          39                 :  * also to match an arbitrary string against it.
          40                 :  *
          41                 :  * @category  Security
          42                 :  * @package   PHPIDS
          43                 :  * @author    Christian Matthies <ch0012@gmail.com>
          44                 :  * @author    Mario Heiderich <mario.heiderich@gmail.com>
          45                 :  * @author    Lars Strojny <lars@strojny.net>
          46                 :  * @copyright 2007 The PHPIDS Group
          47                 :  * @license   http://www.gnu.org/licenses/lgpl.html LGPL
          48                 :  * @version   Release: $Id:Filter.php 517 2007-09-15 15:04:13Z mario $
          49                 :  * @link      http://php-ids.org/
          50                 :  * @since     Version 0.4
          51                 :  */
          52                 : class IDS_Filter
          53                 : {
          54                 :
          55                 :     /**
          56                 :      * Filter rule
          57                 :      *
          58                 :      * @var    string
          59                 :      */
          60                 :     protected $rule;
          61                 :
          62                 :     /**
          63                 :      * List of tags of the filter
          64                 :      *
          65                 :      * @var    array
          66                 :      */
          67                 :     protected $tags = array();
          68                 :
          69                 :     /**
          70                 :      * Filter impact level
          71                 :      *
          72                 :      * @var    integer
          73                 :      */
          74                 :     protected $impact = 0;
          75                 :
          76                 :     /**
          77                 :      * Filter description
          78                 :      *
          79                 :      * @var    string
          80                 :      */
          81                 :     protected $description = null;
          82                 :
          83                 :     /**
          84                 :      * Constructor
          85                 :      *
          86                 :      * @param mixed   $rule        filter rule
          87                 :      * @param string  $description filter description
          88                 :      * @param array   $tags        list of tags
          89                 :      * @param integer $impact      filter impact level
          90                 :      *
          91                 :      * @return void
          92                 :      */
          93                 :     public function __construct($id, $rule, $description, array $tags, $impact)
          94                 :     {
          95              69 :         $this->id          = $id;
          96              69 :         $this->rule        = $rule;
          97              69 :         $this->tags        = $tags;
          98              69 :         $this->impact      = $impact;
          99              69 :         $this->description = $description;
         100              69 :     }
         101                 :
         102                 :     /**
         103                 :      * Matches a string against current filter
         104                 :      *
         105                 :      * Matches given string against the filter rule the specific object of this
         106                 :      * class represents
         107                 :      *
         108                 :      * @param string $string the string to match
         109                 :      *
         110                 :      * @throws InvalidArgumentException if argument is no string
         111                 :      * @return boolean
         112                 :      */
         113                 :     public function match($string)
         114                 :     {
         115              38 :         if (!is_string($string)) {
         116               1 :             throw new InvalidArgumentException('
         117               1 :                 Invalid argument. Expected a string, received ' . gettype($string)
         118               1 :             );
         119                 :         }
         120                 :
         121              37 :         return (bool) preg_match(
         122              37 :             '/' . $this->getRule() . '/ms', strtolower($string)
         123              37 :         );
         124                 :     }
         125                 :
         126                 :     /**
         127                 :      * Returns filter description
         128                 :      *
         129                 :      * @return string
         130                 :      */
         131                 :     public function getDescription()
         132                 :     {
         133               2 :         return $this->description;
         134                 :     }
         135                 :
         136                 :     /**
         137                 :      * Return list of affected tags
         138                 :      *
         139                 :      * Each filter rule is concerned with a certain kind of attack vectors.
         140                 :      * This method returns those affected kinds.
         141                 :      *
         142                 :      * @return array
         143                 :      */
         144                 :     public function getTags()
         145                 :     {
         146               6 :         return $this->tags;
         147                 :     }
         148                 :
         149                 :     /**
         150                 :      * Returns filter rule
         151                 :      *
         152                 :      * @return string
         153                 :      */
         154                 :     public function getRule()
         155                 :     {
         156              38 :         return $this->rule;
         157                 :     }
         158                 :
         159                 :     /**
         160                 :      * Get filter impact level
         161                 :      *
         162                 :      * @return integer
         163                 :      */
         164                 :     public function getImpact()
         165                 :     {
         166              36 :         return $this->impact;
         167                 :     }
         168                 :
         169                 :     /**
         170                 :      * Get filter ID
         171                 :      *
         172                 :      * @return integer
         173                 :      */
         174                 :     public function getId()
         175                 :     {
         176               1 :         return $this->id;
         177                 :     }
         178                 : }
         179                 :
         180                 : /*
         181                 :  * Local variables:
         182                 :  * tab-width: 4
         183                 :  * c-basic-offset: 4
         184                 :  * End:
         185                 :  */

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