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<?php
/**
* Generate fancy 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 {
$IP = __DIR__ . '/../../..';
}
require_once "$IP/maintenance/Maintenance.php";
use MediaWiki\Extension\ConfirmEdit\FancyCaptcha\FancyCaptcha;
use MediaWiki\Extension\ConfirmEdit\Hooks;
use MediaWiki\Maintenance\Maintenance;
use MediaWiki\Shell\Shell;
use MediaWiki\Status\Status;
/**
* Maintenance script to generate fancy captchas using a python script and copy them into storage.
*
* @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( "badwordlist", "A list 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 when running the captcha python script"
);
$this->addOption( "delete", "Deletes all the old captchas" );
$this->addOption( "threads", "The number of threads to use to generate the images",
false, true );
$this->addOption(
'captchastoragedir',
'Overrides the value of $wgCaptchaStorageDirectory',
false,
true
);
$this->addDescription( "Generate new fancy captchas and move them into storage" );
$this->requireExtension( "FancyCaptcha" );
}
public function execute() {
global $wgCaptchaSecret, $wgCaptchaDirectoryLevels;
$totalTime = -microtime( true );
$instance = Hooks::getInstance();
if ( !( $instance instanceof FancyCaptcha ) ) {
$this->fatalError( "\$wgCaptchaClass is not FancyCaptcha.\n", 1 );
}
// Overrides $wgCaptchaStorageDirectory for this script run
if ( $this->hasOption( 'captchastoragedir' ) ) {
global $wgCaptchaStorageDirectory;
$wgCaptchaStorageDirectory = $this->getOption( 'captchastoragedir' );
}
$backend = $instance->getBackend();
$deleteOldCaptchas = $this->getOption( 'delete' );
$countGen = (int)$this->getOption( 'fill' );
if ( !$deleteOldCaptchas ) {
$countAct = $instance->getCaptchaCount();
$this->output( "Current number of captchas is $countAct.\n" );
$countGen -= $countAct;
}
if ( $countGen <= 0 ) {
$this->output( "No need to generate any extra captchas.\n" );
return;
}
$tmpDir = wfTempDir() . '/mw-fancycaptcha-' . time() . '-' . wfRandomString( 6 );
if ( !wfMkdirParents( $tmpDir ) ) {
$this->fatalError( "Could not create temp directory.\n", 1 );
}
$cmd = [
"python3",
dirname( __DIR__ ) . '/captcha.py',
"--key",
$wgCaptchaSecret,
"--output",
$tmpDir,
"--count",
(string)$countGen,
"--dirs",
$wgCaptchaDirectoryLevels
];
foreach (
[ 'wordlist', 'font', 'font-size', 'badwordlist', 'verbose', 'threads' ] as $par
) {
if ( $this->hasOption( $par ) ) {
$cmd[] = "--$par";
$cmd[] = $this->getOption( $par );
}
}
$this->output( "Generating $countGen new captchas.." );
$captchaTime = -microtime( true );
$result = Shell::command( [] )
->params( $cmd )
->limits( [ 'time' => 0, 'memory' => 0, 'walltime' => 0, 'filesize' => 0 ] )
->disableSandbox()
->execute();
if ( $result->getExitCode() !== 0 ) {
$this->output( " Failed.\n" );
wfRecursiveRemoveDir( $tmpDir );
$this->fatalError(
"An error occurred when running captcha.py:\n{$result->getStderr()}\n",
1
);
}
$captchaTime += microtime( true );
$this->output( " Done.\n" );
$this->output(
sprintf(
"\nGeneration script for %d captchas ran in %.1f seconds\n",
$countGen,
$captchaTime
)
);
$tmpCountTime = -microtime( true );
$iter = new RecursiveIteratorIterator(
new RecursiveDirectoryIterator(
$tmpDir,
FilesystemIterator::SKIP_DOTS
),
RecursiveIteratorIterator::LEAVES_ONLY
);
$captchasGenerated = iterator_count( $iter );
$filesToStore = [];
/** @var SplFileInfo $fileInfo */
foreach ( $iter as $fileInfo ) {
if ( !$fileInfo->isFile() ) {
continue;
}
[ $salt, $hash ] = $instance->hashFromImageName( $fileInfo->getBasename() );
$dest = $instance->imagePath( $salt, $hash );
$backend->prepare( [ 'dir' => dirname( $dest ) ] );
$filesToStore[] = [
'op' => 'store',
'src' => $fileInfo->getPathname(),
'dst' => $dest,
];
}
$tmpCountTime += microtime( true );
$this->output(
sprintf(
"\nEnumerated %d temporary captchas in %.1f seconds\n",
$captchasGenerated,
$tmpCountTime
)
);
if ( $captchasGenerated === 0 ) {
wfRecursiveRemoveDir( $tmpDir );
$this->error( "No generated captchas found in temporary directory; did captcha.py actually succeed?" );
} elseif ( $captchasGenerated < $countGen ) {
$this->output( "Expecting $countGen new captchas, only $captchasGenerated found on disk; continuing\n." );
}
$filesToDelete = [];
if ( $deleteOldCaptchas ) {
$this->output( "Getting a list of old captchas to delete..." );
$path = $backend->getRootStoragePath() . '/' . $instance->getStorageDir();
foreach ( $backend->getFileList( [ 'dir' => $path ] ) as $file ) {
$filesToDelete[] = [
'op' => 'delete',
'src' => $path . '/' . $file,
];
}
$this->output( " Done.\n" );
}
$this->output( "Copying the new captchas to storage..." );
$storeTime = -microtime( true );
$ret = $backend->doQuickOperations( $filesToStore );
$storeTime += microtime( true );
$storeSucceeded = true;
if ( $ret->isOK() ) {
$this->output( " Done.\n" );
$this->output(
sprintf(
"\nCopied %d captchas to storage in %.1f seconds\n",
$ret->successCount,
$storeTime
)
);
if ( !$ret->isGood() ) {
$this->output(
"Non fatal errors:\n" .
Status::wrap( $ret )->getWikiText( false, false, 'en' ) .
"\n"
);
}
if ( $ret->failCount ) {
$storeSucceeded = false;
$this->error( sprintf( "\nFailed to copy %d captchas\n", $ret->failCount ) );
}
if ( $ret->successCount + $ret->failCount !== $captchasGenerated ) {
$storeSucceeded = false;
$this->error(
sprintf( "Internal error: captchasGenerated: %d, successCount: %d, failCount: %d\n",
$captchasGenerated, $ret->successCount, $ret->failCount
)
);
}
} else {
$storeSucceeded = false;
$this->output( "Errored.\n" );
$this->error(
Status::wrap( $ret )->getWikiText( false, false, 'en' ) .
"\n"
);
}
if ( $storeSucceeded && $deleteOldCaptchas ) {
$numOriginalFiles = count( $filesToDelete );
$this->output( "Deleting {$numOriginalFiles} old captchas...\n" );
$deleteTime = -microtime( true );
$ret = $backend->doQuickOperations( $filesToDelete );
$deleteTime += microtime( true );
if ( $ret->isOK() ) {
$this->output( "Done.\n" );
$this->output(
sprintf(
"\nDeleted %d old captchas in %.1f seconds\n",
$numOriginalFiles,
$deleteTime
)
);
if ( !$ret->isGood() ) {
$this->output(
"Non fatal errors:\n" .
Status::wrap( $ret )->getWikiText( false, false, 'en' ) .
"\n"
);
}
} else {
$this->output( "Errored.\n" );
$this->error(
Status::wrap( $ret )->getWikiText( false, false, 'en' ) .
"\n"
);
}
}
$this->output( "Removing temporary files..." );
wfRecursiveRemoveDir( $tmpDir );
$this->output( " Done.\n" );
$totalTime += microtime( true );
$this->output(
sprintf(
"\nWhole captchas generation process took %.1f seconds\n",
$totalTime
)
);
}
}
$maintClass = GenerateFancyCaptchas::class;
require_once RUN_MAINTENANCE_IF_MAIN;