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    1   /* $Id: StripSessionCFIDs.java 4655 2006-09-25 20:27:35Z paul_jack $
    2    *
    3    * Created on September 1st, 2006
    4    *
    5    * Copyright (C) 2006 Internet Archive.
    6    *
    7    * This file is part of the Heritrix web crawler (crawler.archive.org).
    8    *
    9    * Heritrix is free software; you can redistribute it and/or modify
    10   * it under the terms of the GNU Lesser Public License as published by
    11   * the Free Software Foundation; either version 2.1 of the License, or
    12   * any later version.
    13   *
    14   * Heritrix is distributed in the hope that it will be useful,
    15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    17   * GNU Lesser Public License for more details.
    18   *
    19   * You should have received a copy of the GNU Lesser Public License
    20   * along with Heritrix; if not, write to the Free Software
    21   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    22   */
    23  package org.archive.crawler.url.canonicalize;
    24
    25  import java.util.regex.Pattern;
    26
    27
    28  /***
    29   * Strip cold fusion session ids.
    30   * @author stack
    31   * @version $Date: 2006-09-25 20:27:35 +0000 (Mon, 25 Sep 2006) $, $Revision: 4655 $
    32   */
    33  public class StripSessionCFIDs
    34  extends BaseRule {
    35
    36      private static final long serialVersionUID = 9122689291157731293L;
    37
    38      private static final String REGEX = "^(.+)" +
    39          "(?:cfid=[^&]+&cftoken=[^&]+(?:jsession=[^&]+)?)(?:&(.*))?$";
    40
    41      private static final String DESCRIPTION = "Strip ColdFusion session IDs. " +
    42          "Use this rule to remove sessionids that look like the following: " +
    43          "CFID=12412453&CFTOKEN=15501799 or " +
    44          "CFID=3304324&CFTOKEN=57491900&jsessionid=a63098d96360$B0$D9$A " +
    45          "using the following case-insensitive regex: " + REGEX;
    46
    47      /***
    48       * Examples:
    49       * <pre>
    50       * Examples:
    51       * boo?CFID=1169580&CFTOKEN=48630702&dtstamp=22%2F08%2F2006%7C06%3A58%3A11
    52       * boo?CFID=12412453&CFTOKEN=15501799&dt=19_08_2006_22_39_28
    53       * boo?CFID=14475712&CFTOKEN=2D89F5AF-3048-2957-DA4EE4B6B13661AB&r=468710288378&m=forgotten
    54       * boo?CFID=16603925&CFTOKEN=2AE13EEE-3048-85B0-56CEDAAB0ACA44B8&r=501652357733&l1=home
    55       * boo?CFID=3304324&CFTOKEN=57491900&jsessionid=a63098d96360$B0$D9$A
    56       * </pre>
    57       */
    58      private static final Pattern COLDFUSION_PATTERN =
    59          Pattern.compile(REGEX, Pattern.CASE_INSENSITIVE);
    60
    61
    62      public StripSessionCFIDs(String name) {
    63          super(name, DESCRIPTION);
    64      }
    65
    66      public String canonicalize(String url, Object context) {
    67          return doStripRegexMatch(url, COLDFUSION_PATTERN.matcher(url));
    68      }
    69  }