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<?php
/**
* Generate captchas using a python script and copy them into storage.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @author Aaron Schulz
* @ingroup Maintenance
*/
if ( getenv( 'MW_INSTALL_PATH' ) ) {
$IP = getenv( 'MW_INSTALL_PATH' );
} else {
$IP = dirname(__FILE__).'/../../..';
}
require_once( "$IP/maintenance/Maintenance.php" );
/**
* Maintenance script to change the password of a given user.
*
* @ingroup Maintenance
*/
class GenerateFancyCaptchas extends Maintenance {
public function __construct() {
parent::__construct();
// See captcha.py for argument usage
$this->addOption( "wordlist", 'A list of words', true, true );
$this->addOption( "font", "The font to use", true, true );
$this->addOption( "font-size", "The font size ", false, true );
$this->addOption( "blacklist", "A blacklist of words that should not be used", false, true );
$this->addOption( "fill", "Fill the captcha container to N files", true, true );
$this->addOption( "verbose", "Show debugging information" );
$this->mDescription = "Generate new captchas and move them into storage";
}
public function execute() {
global $wgCaptchaSecret, $wgCaptchaDirectoryLevels;
$instance = ConfirmEditHooks::getInstance();
if ( !( $instance instanceof FancyCaptcha ) ) {
$this->error( "\$wgCaptchaClass is not FancyCaptcha.\n", 1 );
}
$backend = $instance->getBackend();
$countAct = $instance->estimateCaptchaCount();
$this->output( "Estimated number of captchas is $countAct.\n" );
$countGen = (int)$this->getOption( 'fill' ) - $countAct;
if ( $countGen <= 0 ) {
$this->output( "No need to generate anymore captchas.\n" );
return;
}
$tmpDir = wfTempDir() . '/mw-fancycaptcha-' . time() . '-' . wfRandomString( 6 );
if ( !wfMkdirParents( $tmpDir ) ) {
$this->error( "Could not create temp directory.\n", 1 );
}
$e = null; // exception
try {
$cmd = sprintf( "python %s --key %s --output %s --count %s --dirs %s",
wfEscapeShellArg( __DIR__ . '/../captcha.py' ),
wfEscapeShellArg( $wgCaptchaSecret ),
wfEscapeShellArg( $tmpDir ),
wfEscapeShellArg( $countGen ),
wfEscapeShellArg( $wgCaptchaDirectoryLevels )
);
foreach ( array( 'wordlist', 'font', 'font-size', 'blacklist', 'verbose' ) as $par ) {
if ( $this->hasOption( $par ) ) {
$cmd .= " --$par " . wfEscapeShellArg( $this->getOption( $par ) );
}
}
$this->output( "Generating $countGen new captchas...\n" );
$retVal = 1;
wfShellExec( $cmd, $retVal );
if ( $retVal != 0 ) {
wfRecursiveRemoveDir( $tmpDir );
$this->error( "Could not run generation script.\n", 1 );
}
$flags = FilesystemIterator::SKIP_DOTS;
$iter = new RecursiveIteratorIterator(
new RecursiveDirectoryIterator( $tmpDir, $flags ),
RecursiveIteratorIterator::CHILD_FIRST // include dirs
);
$this->output( "Copying the new captchas to storage...\n" );
foreach ( $iter as $fileInfo ) {
if ( !$fileInfo->isFile() ) {
continue;
}
list( $salt, $hash ) = $instance->hashFromImageName( $fileInfo->getBasename() );
$status = $backend->quickStore( array(
'src' => $fileInfo->getPathname(),
'dst' => $instance->imagePath( $salt, $hash )
) );
if ( !$status->isOK() ) {
$this->error( "Could not save file '{$fileInfo->getPathname()}'.\n" );
}
}
} catch ( Exception $e ) {
wfRecursiveRemoveDir( $tmpDir );
throw $e;
}
$this->output( "Removing temporary files...\n" );
wfRecursiveRemoveDir( $tmpDir );
$this->output( "Done.\n" );
}
}
$maintClass = "GenerateFancyCaptchas";
require_once( RUN_MAINTENANCE_IF_MAIN );
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