LocalSettingsGenerator.php

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<?php
class LocalSettingsGenerator {

    protected $extensions = [];
    protected $values = [];
    protected $groupPermissions = [];
    protected $dbSettings = '';
    protected $IP;

    protected $installer;

    public function __construct( Installer $installer ) {
        $this->installer = $installer;

        $this->extensions = $installer->getVar( '_Extensions' );
        $this->skins = $installer->getVar( '_Skins' );
        $this->IP = $installer->getVar( 'IP' );

        $db = $installer->getDBInstaller( $installer->getVar( 'wgDBtype' ) );

        $confItems = array_merge(
            [
                'wgServer', 'wgScriptPath',
                'wgPasswordSender', 'wgImageMagickConvertCommand', 'wgShellLocale',
                'wgLanguageCode', 'wgEnableEmail', 'wgEnableUserEmail', 'wgDiff3',
                'wgEnotifUserTalk', 'wgEnotifWatchlist', 'wgEmailAuthentication',
                'wgDBtype', 'wgSecretKey', 'wgRightsUrl', 'wgSitename', 'wgRightsIcon',
                'wgRightsText', '_MainCacheType', 'wgEnableUploads',
                '_MemCachedServers', 'wgDBserver', 'wgDBuser',
                'wgDBpassword', 'wgUseInstantCommons', 'wgUpgradeKey', 'wgDefaultSkin',
                'wgMetaNamespace', 'wgLogo', 'wgAuthenticationTokenVersion',
            ],
            $db->getGlobalNames()
        );

        $unescaped = [ 'wgRightsIcon', 'wgLogo' ];
        $boolItems = [
            'wgEnableEmail', 'wgEnableUserEmail', 'wgEnotifUserTalk',
            'wgEnotifWatchlist', 'wgEmailAuthentication', 'wgEnableUploads', 'wgUseInstantCommons'
        ];

        foreach ( $confItems as $c ) {
            $val = $installer->getVar( $c );

            if ( in_array( $c, $boolItems ) ) {
                $val = wfBoolToStr( $val );
            }

            if ( !in_array( $c, $unescaped ) && $val !== null ) {
                $val = self::escapePhpString( $val );
            }

            $this->values[$c] = $val;
        }

        $this->dbSettings = $db->getLocalSettings();
        $this->values['wgEmergencyContact'] = $this->values['wgPasswordSender'];
    }

    public function setGroupRights( $group, $rightsArr ) {
        $this->groupPermissions[$group] = $rightsArr;
    }

    public static function escapePhpString( $string ) {
        if ( is_array( $string ) || is_object( $string ) ) {
            return false;
        }

        return strtr(
            $string,
            [
                "\n" => "\\n",
                "\r" => "\\r",
                "\t" => "\\t",
                "\\" => "\\\\",
                "\$" => "\\\$",
                "\"" => "\\\""
            ]
        );
    }

    public function getText() {
        $localSettings = $this->getDefaultText();

        if ( count( $this->skins ) ) {
            $localSettings .= "
# Enabled skins.
# The following skins were automatically enabled:\n";

            foreach ( $this->skins as $skinName ) {
                $localSettings .= $this->generateExtEnableLine( 'skins', $skinName );
            }

            $localSettings .= "\n";
        }

        if ( count( $this->extensions ) ) {
            $localSettings .= "
# Enabled extensions. Most of the extensions are enabled by adding
# wfLoadExtensions('ExtensionName');
# to LocalSettings.php. Check specific extension documentation for more details.
# The following extensions were automatically enabled:\n";

            foreach ( $this->extensions as $extName ) {
                $localSettings .= $this->generateExtEnableLine( 'extensions', $extName );
            }

            $localSettings .= "\n";
        }

        $localSettings .= "
# End of automatically generated settings.
# Add more configuration options below.\n\n";

        return $localSettings;
    }

    private function generateExtEnableLine( $dir, $name ) {
        if ( $dir === 'extensions' ) {
            $jsonFile = 'extension.json';
            $function = 'wfLoadExtension';
        } elseif ( $dir === 'skins' ) {
            $jsonFile = 'skin.json';
            $function = 'wfLoadSkin';
        } else {
            throw new InvalidArgumentException( '$dir was not "extensions" or "skins' );
        }

        $encName = self::escapePhpString( $name );

        if ( file_exists( "{$this->IP}/$dir/$encName/$jsonFile" ) ) {
            return "$function( '$encName' );\n";
        } else {
            return "require_once \"\$IP/$dir/$encName/$encName.php\";\n";
        }
    }

    public function writeFile( $fileName ) {
        file_put_contents( $fileName, $this->getText() );
    }

    protected function buildMemcachedServerList() {
        $servers = $this->values['_MemCachedServers'];

        if ( !$servers ) {
            return '[]';
        } else {
            $ret = '[ ';
            $servers = explode( ',', $servers );

            foreach ( $servers as $srv ) {
                $srv = trim( $srv );
                $ret .= "'$srv', ";
            }

            return rtrim( $ret, ', ' ) . ' ]';
        }
    }

    protected function getDefaultText() {
        if ( !$this->values['wgImageMagickConvertCommand'] ) {
            $this->values['wgImageMagickConvertCommand'] = '/usr/bin/convert';
            $magic = '#';
        } else {
            $magic = '';
        }

        if ( !$this->values['wgShellLocale'] ) {
            $this->values['wgShellLocale'] = 'en_US.UTF-8';
            $locale = '#';
        } else {
            $locale = '';
        }

        $metaNamespace = '';
        if ( $this->values['wgMetaNamespace'] !== $this->values['wgSitename'] ) {
            $metaNamespace = "\$wgMetaNamespace = \"{$this->values['wgMetaNamespace']}\";\n";
        }

        $groupRights = '';
        $noFollow = '';
        if ( $this->groupPermissions ) {
            $groupRights .= "# The following permissions were set based on your choice in the installer\n";
            foreach ( $this->groupPermissions as $group => $rightArr ) {
                $group = self::escapePhpString( $group );
                foreach ( $rightArr as $right => $perm ) {
                    $right = self::escapePhpString( $right );
                    $groupRights .= "\$wgGroupPermissions['$group']['$right'] = " .
                        wfBoolToStr( $perm ) . ";\n";
                }
            }
            $groupRights .= "\n";

            if ( ( isset( $this->groupPermissions['*']['edit'] ) &&
                    $this->groupPermissions['*']['edit'] === false )
                && ( isset( $this->groupPermissions['*']['createaccount'] ) &&
                    $this->groupPermissions['*']['createaccount'] === false )
                && ( isset( $this->groupPermissions['*']['read'] ) &&
                    $this->groupPermissions['*']['read'] !== false )
            ) {
                $noFollow = "# Set \$wgNoFollowLinks to true if you open up your wiki to editing by\n"
                    . "# the general public and wish to apply nofollow to external links as a\n"
                    . "# deterrent to spammers. Nofollow is not a comprehensive anti-spam solution\n"
                    . "# and open wikis will generally require other anti-spam measures; for more\n"
                    . "# information, see https://www.mediawiki.org/wiki/Manual:Combating_spam\n"
                    . "\$wgNoFollowLinks = false;\n\n";
            }
        }

        $serverSetting = "";
        if ( array_key_exists( 'wgServer', $this->values ) && $this->values['wgServer'] !== null ) {
            $serverSetting = "\n## The protocol and server name to use in fully-qualified URLs\n";
            $serverSetting .= "\$wgServer = \"{$this->values['wgServer']}\";";
        }

        switch ( $this->values['_MainCacheType'] ) {
            case 'anything':
            case 'db':
            case 'memcached':
            case 'accel':
                $cacheType = 'CACHE_' . strtoupper( $this->values['_MainCacheType'] );
                break;
            case 'none':
            default:
                $cacheType = 'CACHE_NONE';
        }

        $mcservers = $this->buildMemcachedServerList();

        return "<?php
# This file was automatically generated by the MediaWiki {$GLOBALS['wgVersion']}
# installer. If you make manual changes, please keep track in case you
# need to recreate them later.
#
# See includes/DefaultSettings.php for all configurable settings
# and their default values, but don't forget to make changes in _this_
# file, not there.
#
# Further documentation for configuration settings may be found at:
# https://www.mediawiki.org/wiki/Manual:Configuration_settings

# Protect against web entry
if ( !defined( 'MEDIAWIKI' ) ) {
    exit;
}

## Uncomment this to disable output compression
# \$wgDisableOutputCompression = true;

\$wgSitename = \"{$this->values['wgSitename']}\";
{$metaNamespace}
## The URL base path to the directory containing the wiki;
## defaults for all runtime URL paths are based off of this.
## For more information on customizing the URLs
## (like /w/index.php/Page_title to /wiki/Page_title) please see:
## https://www.mediawiki.org/wiki/Manual:Short_URL
\$wgScriptPath = \"{$this->values['wgScriptPath']}\";
${serverSetting}

## The URL path to static resources (images, scripts, etc.)
\$wgResourceBasePath = \$wgScriptPath;

## The URL path to the logo.  Make sure you change this from the default,
## or else you'll overwrite your logo when you upgrade!
\$wgLogo = \"{$this->values['wgLogo']}\";

## UPO means: this is also a user preference option

\$wgEnableEmail = {$this->values['wgEnableEmail']};
\$wgEnableUserEmail = {$this->values['wgEnableUserEmail']}; # UPO

\$wgEmergencyContact = \"{$this->values['wgEmergencyContact']}\";
\$wgPasswordSender = \"{$this->values['wgPasswordSender']}\";

\$wgEnotifUserTalk = {$this->values['wgEnotifUserTalk']}; # UPO
\$wgEnotifWatchlist = {$this->values['wgEnotifWatchlist']}; # UPO
\$wgEmailAuthentication = {$this->values['wgEmailAuthentication']};

## Database settings
\$wgDBtype = \"{$this->values['wgDBtype']}\";
\$wgDBserver = \"{$this->values['wgDBserver']}\";
\$wgDBname = \"{$this->values['wgDBname']}\";
\$wgDBuser = \"{$this->values['wgDBuser']}\";
\$wgDBpassword = \"{$this->values['wgDBpassword']}\";

{$this->dbSettings}

## Shared memory settings
\$wgMainCacheType = $cacheType;
\$wgMemCachedServers = $mcservers;

## To enable image uploads, make sure the 'images' directory
## is writable, then set this to true:
\$wgEnableUploads = {$this->values['wgEnableUploads']};
{$magic}\$wgUseImageMagick = true;
{$magic}\$wgImageMagickConvertCommand = \"{$this->values['wgImageMagickConvertCommand']}\";

# InstantCommons allows wiki to use images from https://commons.wikimedia.org
\$wgUseInstantCommons = {$this->values['wgUseInstantCommons']};

## If you use ImageMagick (or any other shell command) on a
## Linux server, this will need to be set to the name of an
## available UTF-8 locale
{$locale}\$wgShellLocale = \"{$this->values['wgShellLocale']}\";

## Set \$wgCacheDirectory to a writable directory on the web server
## to make your wiki go slightly faster. The directory should not
## be publically accessible from the web.
#\$wgCacheDirectory = \"\$IP/cache\";

# Site language code, should be one of the list in ./languages/data/Names.php
\$wgLanguageCode = \"{$this->values['wgLanguageCode']}\";

\$wgSecretKey = \"{$this->values['wgSecretKey']}\";

# Changing this will log out all existing sessions.
\$wgAuthenticationTokenVersion = \"{$this->values['wgAuthenticationTokenVersion']}\";

# Site upgrade key. Must be set to a string (default provided) to turn on the
# web installer while LocalSettings.php is in place
\$wgUpgradeKey = \"{$this->values['wgUpgradeKey']}\";

## For attaching licensing metadata to pages, and displaying an
## appropriate copyright notice / icon. GNU Free Documentation
## License and Creative Commons licenses are supported so far.
\$wgRightsPage = \"\"; # Set to the title of a wiki page that describes your license/copyright
\$wgRightsUrl = \"{$this->values['wgRightsUrl']}\";
\$wgRightsText = \"{$this->values['wgRightsText']}\";
\$wgRightsIcon = \"{$this->values['wgRightsIcon']}\";

# Path to the GNU diff3 utility. Used for conflict resolution.
\$wgDiff3 = \"{$this->values['wgDiff3']}\";

{$groupRights}{$noFollow}## Default skin: you can change the default skin. Use the internal symbolic
## names, ie 'vector', 'monobook':
\$wgDefaultSkin = \"{$this->values['wgDefaultSkin']}\";
";
    }
}