maintenance/createCommonPasswordCdb.php

   1 <?php
   2 /**
   3  * Create serialized/commonpasswords.cdb
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Maintenance
  22  */
  23
  24 require_once __DIR__ . '/Maintenance.php';
  25
  26 /**
  27  * Maintenance script to create common password cdb database.
  28  *
  29  * Meant to take a file like
  30  * https://github.com/danielmiessler/SecLists/blob/master/Passwords/rockyou.txt?raw=true
  31  * as input.
  32  * @see serialized/commonpasswords.cdb and PasswordPolicyChecks::checkPopularPasswordBlacklist
  33  * @since 1.27
  34  * @ingroup Maintenance
  35  */
  36 class GenerateCommonPassword extends Maintenance {
  37         public function __construct() {
  38                 global $IP;
  39                 parent::__construct();
  40                 $this->mDescription = "Generate CDB file of common passwords";
  41                 $this->addOption( 'limit', "Max number of passwords to write", false, true, 'l' );
  42                 $this->addArg( 'inputfile', 'List of passwords (one per line) to use or - for stdin', true );
  43                 $this->addArg(
  44                         'output',
  45                         "Location to write CDB file to (Try $IP/serialized/commonpasswords.cdb)",
  46                         true
  47                 );
  48         }
  49
  50         public function execute() {
  51                 $limit = (int)$this->getOption( 'limit', PHP_INT_MAX );
  52                 $langEn = Language::factory( 'en' );
  53
  54                 $infile = $this->getArg( 0 );
  55                 if ( $infile === '-' ) {
  56                         $infile = 'php://stdin';
  57                 }
  58                 $outfile = $this->getArg( 1 );
  59
  60                 if ( !is_readable( $infile ) && $infile !== 'php://stdin' ) {
  61                         $this->error( "Cannot open input file $infile for reading", 1 );
  62                 }
  63
  64                 $file = fopen( $infile, 'r' );
  65                 if ( $file === false ) {
  66                         $this->error( "Cannot read input file $infile", 1 );
  67                 }
  68
  69                 try {
  70                         $db = \Cdb\Writer::open( $outfile );
  71
  72                         $alreadyWritten = array();
  73                         $skipped = 0;
  74                         for ( $i = 0; ( $i - $skipped ) < $limit; $i++ ) {
  75                                 if ( feof( $file ) ) {
  76                                         break;
  77                                 }
  78                                 $rawLine = fgets( $file );
  79
  80                                 if ( $rawLine === false ) {
  81                                         $this->error( "Error reading input file" );
  82                                         break;
  83                                 }
  84                                 if ( substr( $rawLine, -1 ) !== "\n" && !feof( $file ) ) {
  85                                         // We're assuming that this just won't happen.
  86                                         $this->error( "fgets did not return whole line at $i??" );
  87                                 }
  88                                 $line = $langEn->lc( trim( $rawLine ) );
  89                                 if ( $line === '' ) {
  90                                         $this->error( "Line number " . ( $i + 1 ) . " is blank?" );
  91                                         $skipped++;
  92                                         continue;
  93                                 }
  94                                 if ( isset( $alreadyWritten[$line] ) ) {
  95                                         $this->output( "Password '$line' already written (line " . ( $i + 1 ) .")\n" );
  96                                         $skipped++;
  97                                         continue;
  98                                 }
  99                                 $alreadyWritten[$line] = true;
 100                                 $db->set( $line, $i + 1 - $skipped );
 101                         }
 102                         // All caps, so cannot conflict with potential password
 103                         $db->set( '_TOTALENTRIES', $i - $skipped );
 104                         $db->close();
 105
 106                         $this->output( "Successfully wrote " . ( $i - $skipped ) .
 107                                 " (out of $i) passwords to $outfile\n"
 108                         );
 109                 } catch ( \Cdb\Exception $e ) {
 110                         $this->error( "Error writing cdb file: " . $e->getMessage(), 2 );
 111                 }
 112
 113         }
 114 }
 115
 116 $maintClass = "GenerateCommonPassword";
 117 require_once RUN_MAINTENANCE_IF_MAIN;