install.php

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<?php
require_once __DIR__ . '/Maintenance.php';

define( 'MW_CONFIG_CALLBACK', 'Installer::overrideConfig' );
define( 'MEDIAWIKI_INSTALL', true );

class CommandLineInstaller extends Maintenance {
    function __construct() {
        parent::__construct();
        global $IP;

        $this->addDescription( "CLI-based MediaWiki installation and configuration.\n" .
            "Default options are indicated in parentheses." );

        $this->addArg( 'name', 'The name of the wiki (MediaWiki)', false );

        $this->addArg( 'admin', 'The username of the wiki administrator.' );
        $this->addOption( 'pass', 'The password for the wiki administrator.', false, true );
        $this->addOption(
            'passfile',
            'An alternative way to provide pass option, as the contents of this file',
            false,
            true
        );
        /* $this->addOption( 'email', 'The email for the wiki administrator', false, true ); */
        $this->addOption(
            'scriptpath',
            'The relative path of the wiki in the web server (/wiki)',
            false,
            true
        );

        $this->addOption( 'lang', 'The language to use (en)', false, true );
        /* $this->addOption( 'cont-lang', 'The content language (en)', false, true ); */

        $this->addOption( 'dbtype', 'The type of database (mysql)', false, true );
        $this->addOption( 'dbserver', 'The database host (localhost)', false, true );
        $this->addOption( 'dbport', 'The database port; only for PostgreSQL (5432)', false, true );
        $this->addOption( 'dbname', 'The database name (my_wiki)', false, true );
        $this->addOption( 'dbpath', 'The path for the SQLite DB ($IP/data)', false, true );
        $this->addOption( 'dbprefix', 'Optional database table name prefix', false, true );
        $this->addOption( 'installdbuser', 'The user to use for installing (root)', false, true );
        $this->addOption( 'installdbpass', 'The password for the DB user to install as.', false, true );
        $this->addOption( 'dbuser', 'The user to use for normal operations (wikiuser)', false, true );
        $this->addOption( 'dbpass', 'The password for the DB user for normal operations', false, true );
        $this->addOption(
            'dbpassfile',
            'An alternative way to provide dbpass option, as the contents of this file',
            false,
            true
        );
        $this->addOption( 'confpath', "Path to write LocalSettings.php to ($IP)", false, true );
        $this->addOption( 'dbschema', 'The schema for the MediaWiki DB in '
            . 'PostgreSQL/Microsoft SQL Server (mediawiki)', false, true );
        /*
        $this->addOption( 'namespace', 'The project namespace (same as the "name" argument)',
            false, true );
        */
        $this->addOption( 'env-checks', "Run environment checks only, don't change anything" );
    }

    function execute() {
        global $IP;

        $siteName = $this->getArg( 0, 'MediaWiki' ); // Will not be set if used with --env-checks
        $adminName = $this->getArg( 1 );

        $dbpassfile = $this->getOption( 'dbpassfile' );
        if ( $dbpassfile !== null ) {
            if ( $this->getOption( 'dbpass' ) !== null ) {
                $this->error( 'WARNING: You have provided the options "dbpass" and "dbpassfile". '
                    . 'The content of "dbpassfile" overrides "dbpass".' );
            }
            MediaWiki\suppressWarnings();
            $dbpass = file_get_contents( $dbpassfile ); // returns false on failure
            MediaWiki\restoreWarnings();
            if ( $dbpass === false ) {
                $this->error( "Couldn't open $dbpassfile", true );
            }
            $this->mOptions['dbpass'] = trim( $dbpass, "\r\n" );
        }

        $passfile = $this->getOption( 'passfile' );
        if ( $passfile !== null ) {
            if ( $this->getOption( 'pass' ) !== null ) {
                $this->error( 'WARNING: You have provided the options "pass" and "passfile". '
                    . 'The content of "passfile" overrides "pass".' );
            }
            MediaWiki\suppressWarnings();
            $pass = file_get_contents( $passfile ); // returns false on failure
            MediaWiki\restoreWarnings();
            if ( $pass === false ) {
                $this->error( "Couldn't open $passfile", true );
            }
            $this->mOptions['pass'] = trim( $pass, "\r\n" );
        } elseif ( $this->getOption( 'pass' ) === null ) {
            $this->error( 'You need to provide the option "pass" or "passfile"', true );
        }

        $installer = InstallerOverrides::getCliInstaller( $siteName, $adminName, $this->mOptions );

        $status = $installer->doEnvironmentChecks();
        if ( $status->isGood() ) {
            $installer->showMessage( 'config-env-good' );
        } else {
            $installer->showStatusMessage( $status );

            return;
        }
        if ( !$this->hasOption( 'env-checks' ) ) {
            $installer->execute();
            $installer->writeConfigurationFile( $this->getOption( 'confpath', $IP ) );
        }
    }

    function validateParamsAndArgs() {
        if ( !$this->hasOption( 'env-checks' ) ) {
            parent::validateParamsAndArgs();
        }
    }
}

$maintClass = 'CommandLineInstaller';

require_once RUN_MAINTENANCE_IF_MAIN;