wiki.techinc.nl/includes/installer/WebInstallerPage.php

<?php
/**
 * Base code for web installer pages.
 *
 * @file
 * @ingroup Deployment
 */

/**
 * Abstract class to define pages for the web installer.
 *
 * @ingroup Deployment
 * @since 1.17
 */
abstract class WebInstallerPage {

	/**
	 * The WebInstaller object this WebInstallerPage belongs to.
	 *
	 * @var WebInstaller
	 */
	public $parent;
	
	public abstract function execute();
	
	/**
	 * Constructor.
	 *
	 * @param $parent WebInstaller
	 */
	public function __construct( WebInstaller $parent ) {
		$this->parent = $parent;
	}

	public function addHTML( $html ) {
		$this->parent->output->addHTML( $html );
	}

	public function startForm() {
		$this->addHTML(
			"<div class=\"config-section\">\n" .
			Html::openElement(
				'form',
				array(
					'method' => 'post',
					'action' => $this->parent->getUrl( array( 'page' => $this->getName() ) )
				)
			) . "\n"
		);
	}

	public function endForm( $continue = 'continue' ) {
		$s = "<div class=\"config-submit\">\n";
		$id = $this->getId();
		
		if ( $id === false ) {
			$s .= Html::hidden( 'lastPage', $this->parent->request->getVal( 'lastPage' ) );
		}
		
		if ( $continue ) {
			// Fake submit button for enter keypress
			$s .= Xml::submitButton( wfMsg( "config-$continue" ),
				array( 'name' => "enter-$continue", 'style' => 'display:none' ) ) . "\n";
		}
		
		if ( $id !== 0 ) {
			$s .= Xml::submitButton( wfMsg( 'config-back' ),
				array(
					'name' => 'submit-back',
					'tabindex' => $this->parent->nextTabIndex()
				) ) . "\n";
		}
		
		if ( $continue ) {
			$s .= Xml::submitButton( wfMsg( "config-$continue" ),
				array(
					'name' => "submit-$continue",
					'tabindex' => $this->parent->nextTabIndex(),
				) ) . "\n";
		}
		
		$s .= "</div></form></div>\n";
		$this->addHTML( $s );
	}

	public function getName() {
		return str_replace( 'WebInstaller_', '', get_class( $this ) );
	}

	public function getId() {
		return array_search( $this->getName(), $this->parent->pageSequence );
	}

	public function getVar( $var ) {
		return $this->parent->getVar( $var );
	}

	public function setVar( $name, $value ) {
		$this->parent->setVar( $name, $value );
	}

	/**
	 * Get the starting tags of a fieldset.
	 *
	 * @param $legend String: message name
	 */
	protected function getFieldsetStart( $legend ) {
		return "\n<fieldset><legend>" . wfMsgHtml( $legend ) . "</legend>\n";
	}

	/**
	 * Get the end tag of a fieldset.
	 */
	protected function getFieldsetEnd() {
		return "</fieldset>\n";
	}
}

class WebInstaller_Locked extends WebInstallerPage {

	// The status of Installer::getLocalSettingsStatus()
	private $status;

	public function setLocalSettingsStatus( Status $s ) {
		$this->status = $s;
	}

	public function execute() {
		$r = $this->parent->request;
		if( !$r->wasPosted() || !$this->status->isOK() ) {
			$this->display();
			return 'output';
		} else {
			$key = $r->getText( 'config_wpUpgradeKey' );
			if( !$key || $key !== $this->getVar( '_UpgradeKey' ) ) {
				$this->parent->showError( 'config-localsettings-badkey' );
				$this->display();
				return 'output';
			} else {
				$this->setVar( '_LocalSettingsLocked', false );
				return 'continue';
			}
		}
	}

	/**
	 * Display stuff to the end user
	 */
	private function display() {
		$this->startForm();
		$this->parent->showStatusBox( $this->status );
		if( $this->status->isOK() && !$this->status->isGood() ) {
			$this->addHTML( "<br />" .
				$this->parent->getTextBox( array(
					'var' => 'wpUpgradeKey',
					'label' => 'config-localsettings-key',
				) )
			);
		}
		$this->endForm();
	}
}

class WebInstaller_Language extends WebInstallerPage {
	
	public function execute() {
		global $wgLang;
		$r = $this->parent->request;
		$userLang = $r->getVal( 'UserLang' );
		$contLang = $r->getVal( 'ContLang' );

		$lifetime = intval( ini_get( 'session.gc_maxlifetime' ) );
		if ( !$lifetime ) {
			$lifetime = 1440; // PHP default
		}

		if ( $r->wasPosted() ) {
			# Do session test
			if ( $this->parent->getSession( 'test' ) === null ) {
				$requestTime = $r->getVal( 'LanguageRequestTime' );
				if ( !$requestTime ) {
					// The most likely explanation is that the user was knocked back
					// from another page on POST due to session expiry
					$msg = 'config-session-expired';
				} elseif ( time() - $requestTime > $lifetime ) {
					$msg = 'config-session-expired';
				} else {
					$msg = 'config-no-session';
				}
				$this->parent->showError( $msg, $wgLang->formatTimePeriod( $lifetime ) );
			} else {
				$languages = Language::getLanguageNames();
				if ( isset( $languages[$userLang] ) ) {
					$this->setVar( '_UserLang', $userLang );
				}
				if ( isset( $languages[$contLang] ) ) {
					$this->setVar( 'wgLanguageCode', $contLang );
				}
				$this->setVar( '_ExternalHTTP', $r->getBool( 'config__ExternalHTTP' ) );
				return 'continue';
			}
		} elseif ( $this->parent->showSessionWarning ) {
			# The user was knocked back from another page to the start
			# This probably indicates a session expiry
			$this->parent->showError( 'config-session-expired', $wgLang->formatTimePeriod( $lifetime ) );
		}

		$this->parent->setSession( 'test', true );

		if ( !isset( $languages[$userLang] ) ) {
			$userLang = $this->getVar( '_UserLang', 'en' );
		}
		if ( !isset( $languages[$contLang] ) ) {
			$contLang = $this->getVar( 'wgLanguageCode', 'en' );
		}
		$this->startForm();
		$s = Html::hidden( 'LanguageRequestTime', time() ) .
			$this->getLanguageSelector( 'UserLang', 'config-your-language', $userLang, $this->parent->getHelpBox( 'config-your-language-help' ) ) .
			$this->getLanguageSelector( 'ContLang', 'config-wiki-language', $contLang, $this->parent->getHelpBox( 'config-wiki-language-help' ) ) .
			$this->parent->getCheckBox(
				array(
					'var' => '_ExternalHTTP',
					'label' => 'config-allow-requests',
				    'help' => $this->parent->getHelpBox( 'config-allow-requests-help' )
				)
			);

		$this->addHTML( $s );
		$this->endForm();
	}

	/**
	 * Get a <select> for selecting languages.
	 */
	public function getLanguageSelector( $name, $label, $selectedCode ) {
		global $wgDummyLanguageCodes;
		$s = Html::openElement( 'select', array( 'id' => $name, 'name' => $name ) ) . "\n";

		$languages = Language::getLanguageNames();
		ksort( $languages );
		$dummies = array_flip( $wgDummyLanguageCodes );
		foreach ( $languages as $code => $lang ) {
			if ( isset( $dummies[$code] ) ) continue;
			$s .= "\n" . Xml::option( "$code - $lang", $code, $code == $selectedCode );
		}
		$s .= "\n</select>\n";
		return $this->parent->label( $label, $name, $s );
	}
	
}

class WebInstaller_Welcome extends WebInstallerPage {
	
	public function execute() {
		if ( $this->parent->request->wasPosted() ) {
			if ( $this->getVar( '_Environment' ) ) {
				return 'continue';
			}
		}
		$this->parent->output->addWikiText( wfMsgNoTrans( 'config-welcome' ) );
		$status = $this->parent->doEnvironmentChecks();
		if ( $status ) {
			$this->parent->output->addWikiText( wfMsgNoTrans( 'config-copyright',
				SpecialVersion::getCopyrightAndAuthorList() ) );
			$this->startForm();
			$this->endForm();
		}
	}
	
}

class WebInstaller_DBConnect extends WebInstallerPage {
	
	public function execute() {
		$r = $this->parent->request;
		if ( $r->wasPosted() ) {
			$status = $this->submit();
			if ( $status->isGood() ) {
				$this->setVar( '_UpgradeDone', false );
				return 'continue';
			} else {
				$this->parent->showStatusBox( $status );
			}
		}

		$this->startForm();

		$types = "<ul class=\"config-settings-block\">\n";
		$settings = '';
		$defaultType = $this->getVar( 'wgDBtype' );

		$dbSupport = '';
		foreach( $this->parent->getDBTypes() as $type ) {
			$db = 'Database' . ucfirst( $type );
			$dbSupport .= wfMsgNoTrans( "config-support-$type",
				call_user_func( array( $db, 'getSoftwareLink' ) ) ) . "\n";
		}
		$this->addHTML( $this->parent->getInfoBox(
			wfMsg( 'config-support-info', $dbSupport ) ) );

		foreach ( $this->parent->getVar( '_CompiledDBs' ) as $type ) {
			$installer = $this->parent->getDBInstaller( $type );
			$types .=
				'<li>' .
				Xml::radioLabel(
					$installer->getReadableName(),
					'DBType',
					$type,
					"DBType_$type",
					$type == $defaultType,
					array( 'class' => 'dbRadio', 'rel' => "DB_wrapper_$type" )
				) .
				"</li>\n";

			$settings .=
				Html::openElement( 'div', array( 'id' => 'DB_wrapper_' . $type, 'class' => 'dbWrapper' ) ) .
				Html::element( 'h3', array(), wfMsg( 'config-header-' . $type ) ) .
				$installer->getConnectForm() .
				"</div>\n";
		}
		$types .= "</ul><br clear=\"left\"/>\n";

		$this->addHTML(
			$this->parent->label( 'config-db-type', false, $types ) .
			$settings
		);

		$this->endForm();
	}

	public function submit() {
		$r = $this->parent->request;
		$type = $r->getVal( 'DBType' );
		$this->setVar( 'wgDBtype', $type );
		$installer = $this->parent->getDBInstaller( $type );
		if ( !$installer ) {
			return Status::newFatal( 'config-invalid-db-type' );
		}
		return $installer->submitConnectForm();
	}
	
}

class WebInstaller_Upgrade extends WebInstallerPage {
	
	public function execute() {
		if ( $this->getVar( '_UpgradeDone' ) ) {
			if ( $this->parent->request->wasPosted() ) {
				// Done message acknowledged
				return 'continue';
			} else {
				// Back button click
				// Show the done message again
				// Make them click back again if they want to do the upgrade again
				$this->showDoneMessage();
				return 'output';
			}
		}

		// wgDBtype is generally valid here because otherwise the previous page
		// (connect) wouldn't have declared its happiness
		$type = $this->getVar( 'wgDBtype' );
		$installer = $this->parent->getDBInstaller( $type );

		if ( !$installer->needsUpgrade() ) {
			return 'skip';
		}

		if ( $this->parent->request->wasPosted() ) {
			$installer->preUpgrade();
			$this->addHTML(
				'<div id="config-spinner" style="display:none;"><img src="../skins/common/images/ajax-loader.gif" /></div>' .
				'<script>jQuery( "#config-spinner" )[0].style.display = "block";</script>' .
				'<textarea id="config-update-log" name="UpdateLog" rows="10" readonly="readonly">'
			);
			$this->parent->output->flush();
			$result = $installer->doUpgrade();
			$this->addHTML( '</textarea>
<script>jQuery( "#config-spinner" )[0].style.display = "none";</script>' );
			$this->parent->output->flush();
			if ( $result ) {
				$this->setVar( '_UpgradeDone', true );
				$this->showDoneMessage();
				return 'output';
			}
		}

		$this->startForm();
		$this->addHTML( $this->parent->getInfoBox(
			wfMsgNoTrans( 'config-can-upgrade', $GLOBALS['wgVersion'] ) ) );
		$this->endForm();
	}

	public function showDoneMessage() {
		$this->startForm();
		$this->addHTML(
			$this->parent->getInfoBox(
				wfMsgNoTrans( 'config-upgrade-done',
					$GLOBALS['wgServer'] .
						$this->getVar( 'wgScriptPath' ) . '/index' .
						$this->getVar( 'wgScriptExtension' )
				), 'tick-32.png'
			)
		);
		$this->endForm( 'regenerate' );
	}
	
}

class WebInstaller_DBSettings extends WebInstallerPage {
	
	public function execute() {
		$installer = $this->parent->getDBInstaller( $this->getVar( 'wgDBtype' ) );

		$r = $this->parent->request;
		if ( $r->wasPosted() ) {
			$status = $installer->submitSettingsForm();
			if ( $status === false ) {
				return 'skip';
			} elseif ( $status->isGood() ) {
				return 'continue';
			} else {
				$this->parent->showStatusBox( $status );
			}
		}

		$form = $installer->getSettingsForm();
		if ( $form === false ) {
			return 'skip';
		}

		$this->startForm();
		$this->addHTML( $form );
		$this->endForm();
	}

}

class WebInstaller_Name extends WebInstallerPage {
	
	public function execute() {
		$r = $this->parent->request;
		if ( $r->wasPosted() ) {
			if ( $this->submit() ) {
				return 'continue';
			}
		}

		$this->startForm();

		if ( $this->getVar( 'wgSitename' ) == $GLOBALS['wgSitename'] ) {
			$this->setVar( 'wgSitename', '' );
		}

		// Set wgMetaNamespace to something valid before we show the form.
		// $wgMetaNamespace defaults to $wgSiteName which is 'MediaWiki'
		$metaNS = $this->getVar( 'wgMetaNamespace' );
		$this->setVar( 'wgMetaNamespace', wfMsgForContent( 'config-ns-other-default' ) );

		$this->addHTML(
			$this->parent->getTextBox( array(
				'var' => 'wgSitename',
				'label' => 'config-site-name',
			  'help' => $this->parent->getHelpBox( 'config-site-name-help' )
			) ) .
			$this->parent->getRadioSet( array(
				'var' => '_NamespaceType',
				'label' => 'config-project-namespace',
				'itemLabelPrefix' => 'config-ns-',
				'values' => array( 'site-name', 'generic', 'other' ),
				'commonAttribs' => array( 'class' => 'enableForOther', 'rel' => 'config_wgMetaNamespace' ),
				'help' => $this->parent->getHelpBox( 'config-project-namespace-help' )
			) ) .
			$this->parent->getTextBox( array(
				'var' => 'wgMetaNamespace',
				'label' => '',
				'attribs' => array( 'disabled' => '' ),
			    
			) ) .
			$this->getFieldSetStart( 'config-admin-box' ) .
			$this->parent->getTextBox( array(
				'var' => '_AdminName',
				'label' => 'config-admin-name',
				'help' => $this->parent->getHelpBox( 'config-admin-help' )
			) ) .
			$this->parent->getPasswordBox( array(
				'var' => '_AdminPassword',
				'label' => 'config-admin-password',
			) ) .
			$this->parent->getPasswordBox( array(
				'var' => '_AdminPassword2',
				'label' => 'config-admin-password-confirm'
			) ) .
			$this->parent->getTextBox( array(
				'var' => '_AdminEmail',
				'label' => 'config-admin-email',
			    'help' => $this->parent->getHelpBox( 'config-admin-email-help' )
			) ) .
			$this->parent->getCheckBox( array(
				'var' => '_Subscribe',
				'label' => 'config-subscribe',
			    'help' => $this->parent->getHelpBox( 'config-subscribe-help' )
			) ) .
			$this->getFieldSetEnd() .
			$this->parent->getInfoBox( wfMsg( 'config-almost-done' ) ) .
			$this->parent->getRadioSet( array(
				'var' => '_SkipOptional',
				'itemLabelPrefix' => 'config-optional-',
				'values' => array( 'continue', 'skip' )
			) )
		);

		// Restore the default value
		$this->setVar( 'wgMetaNamespace', $metaNS );

		$this->endForm();
		return 'output';
	}

	public function submit() {
		$retVal = true;
		$this->parent->setVarsFromRequest( array( 'wgSitename', '_NamespaceType',
			'_AdminName', '_AdminPassword', '_AdminPassword2', '_AdminEmail',
			'_Subscribe', '_SkipOptional' ) );

		// Validate site name
		if ( strval( $this->getVar( 'wgSitename' ) ) === '' ) {
			$this->parent->showError( 'config-site-name-blank' );
			$retVal = false;
		}

		// Fetch namespace
		$nsType = $this->getVar( '_NamespaceType' );
		if ( $nsType == 'site-name' ) {
			$name = $this->getVar( 'wgSitename' );
			// Sanitize for namespace
			// This algorithm should match the JS one in WebInstallerOutput.php
			$name = preg_replace( '/[\[\]\{\}|#<>%+? ]/', '_', $name );
			$name = str_replace( '&', '&amp;', $name );
			$name = preg_replace( '/__+/', '_', $name );
			$name = ucfirst( trim( $name, '_' ) );
		} elseif ( $nsType == 'generic' ) {
			$name = wfMsg( 'config-ns-generic' );
		} else { // other
			$name = $this->getVar( 'wgMetaNamespace' );
		}

		// Validate namespace
		if ( strpos( $name, ':' ) !== false ) {
			$good = false;
		} else {
			// Title-style validation
			$title = Title::newFromText( $name );
			if ( !$title ) {
				$good = $nsType == 'site-name';
			} else {
				$name = $title->getDBkey();
				$good = true;
			}
		}
		if ( !$good ) {
			$this->parent->showError( 'config-ns-invalid', $name );
			$retVal = false;
		}
		$this->setVar( 'wgMetaNamespace', $name );

		// Validate username for creation
		$name = $this->getVar( '_AdminName' );
		if ( strval( $name ) === '' ) {
			$this->parent->showError( 'config-admin-name-blank' );
			$cname = $name;
			$retVal = false;
		} else {
			$cname = User::getCanonicalName( $name, 'creatable' );
			if ( $cname === false ) {
				$this->parent->showError( 'config-admin-name-invalid', $name );
				$retVal = false;
			} else {
				$this->setVar( '_AdminName', $cname );
			}
		}

		// Validate password
		$msg = false;
		$valid = false;
		$pwd = $this->getVar( '_AdminPassword' );
		$user = User::newFromName( $cname );
		if ( ( isset ( $pwd ) ) && ( $user != null ) ) {
    		$valid = $user->getPasswordValidity( $pwd );
		}
		if ( strval( $pwd ) === '' ) {
			# $user->getPasswordValidity just checks for $wgMinimalPasswordLength.
			# This message is more specific and helpful.
			$msg = 'config-admin-password-blank';
		} elseif ( $pwd !== $this->getVar( '_AdminPassword2' ) ) {
			$msg = 'config-admin-password-mismatch';
		} elseif ( $valid !== true ) {
			# As of writing this will only catch the username being e.g. 'FOO' and
			# the password 'foo'
			$msg = $valid;
		}
		if ( $msg !== false ) {
			$this->parent->showError( $msg );
			$this->setVar( '_AdminPassword', '' );
			$this->setVar( '_AdminPassword2', '' );
			$retVal = false;
		}
		return $retVal;
	}
	
}

class WebInstaller_Options extends WebInstallerPage {
	
	public function execute() {
		if ( $this->getVar( '_SkipOptional' ) == 'skip' ) {
			return 'skip';
		}
		if ( $this->parent->request->wasPosted() ) {
			if ( $this->submit() ) {
				return 'continue';
			}
		}

		$this->startForm();
		$this->addHTML(
			# User Rights
			$this->parent->getRadioSet( array(
				'var' => '_RightsProfile',
				'label' => 'config-profile',
				'itemLabelPrefix' => 'config-profile-',
				'values' => array_keys( $this->parent->rightsProfiles ),
			) ) .
			$this->parent->getHelpBox( 'config-profile-help' ) .

			# Licensing
			$this->parent->getRadioSet( array(
				'var' => '_LicenseCode',
				'label' => 'config-license',
				'itemLabelPrefix' => 'config-license-',
				'values' => array_keys( $this->parent->licenses ),
				'commonAttribs' => array( 'class' => 'licenseRadio' ),
			) ) .
			$this->getCCChooser() .
			$this->parent->getHelpBox( 'config-license-help' ) .

			# E-mail
			$this->getFieldSetStart( 'config-email-settings' ) .
			$this->parent->getCheckBox( array(
				'var' => 'wgEnableEmail',
				'label' => 'config-enable-email',
				'attribs' => array( 'class' => 'showHideRadio', 'rel' => 'emailwrapper' ),
			) ) .
			$this->parent->getHelpBox( 'config-enable-email-help' ) .
			"<div id=\"emailwrapper\">" .
			$this->parent->getTextBox( array(
				'var' => 'wgPasswordSender',
				'label' => 'config-email-sender'
			) ) .
			$this->parent->getHelpBox( 'config-email-sender-help' ) .
			$this->parent->getCheckBox( array(
				'var' => 'wgEnableUserEmail',
				'label' => 'config-email-user',
			) ) .
			$this->parent->getHelpBox( 'config-email-user-help' ) .
			$this->parent->getCheckBox( array(
				'var' => 'wgEnotifUserTalk',
				'label' => 'config-email-usertalk',
			) ) .
			$this->parent->getHelpBox( 'config-email-usertalk-help' ) .
			$this->parent->getCheckBox( array(
				'var' => 'wgEnotifWatchlist',
				'label' => 'config-email-watchlist',
			) ) .
			$this->parent->getHelpBox( 'config-email-watchlist-help' ) .
			$this->parent->getCheckBox( array(
				'var' => 'wgEmailAuthentication',
				'label' => 'config-email-auth',
			) ) .
			$this->parent->getHelpBox( 'config-email-auth-help' ) .
			"</div>" .
			$this->getFieldSetEnd()
		);

		$extensions = $this->parent->findExtensions();
		
		if( $extensions ) {
			$extHtml = $this->getFieldSetStart( 'config-extensions' );
			
			foreach( $extensions as $ext ) {
				$extHtml .= $this->parent->getCheckBox( array(
					'var' => "ext-$ext",
					'rawtext' => $ext,
				) );
			}
			
			$extHtml .= $this->parent->getHelpBox( 'config-extensions-help' ) .
			$this->getFieldSetEnd();
			$this->addHTML( $extHtml );
		}

		$this->addHTML(
			# Uploading
			$this->getFieldSetStart( 'config-upload-settings' ) .
			$this->parent->getCheckBox( array(
				'var' => 'wgEnableUploads',
				'label' => 'config-upload-enable',
				'attribs' => array( 'class' => 'showHideRadio', 'rel' => 'uploadwrapper' ),
			    'help' => $this->parent->getHelpBox( 'config-upload-help' )
			) ) .
			'<div id="uploadwrapper" style="display: none;">' .
			$this->parent->getTextBox( array(
				'var' => 'wgDeletedDirectory',
				'label' => 'config-upload-deleted',
			    'help' => $this->parent->getHelpBox( 'config-upload-deleted-help' )
			) ) .
			'</div>' .
			$this->parent->getTextBox( array(
				'var' => 'wgLogo',
				'label' => 'config-logo',
			    'help' => $this->parent->getHelpBox( 'config-logo-help' )
			) )
		);
		$canUse = $this->getVar( '_ExternalHTTP' ) ?
			'config-instantcommons-good' : 'config-instantcommons-bad';
		$this->addHTML(
			$this->parent->getCheckBox( array(
				'var' => 'wgUseInstantCommons',
				'label' => 'config-instantcommons',
			    'help' => $this->parent->getHelpBox( 'config-instantcommons-help', wfMsgNoTrans( $canUse ) )
			) ) .
			$this->getFieldSetEnd()
		);

		$caches = array( 'none' );
		if( count( $this->getVar( '_Caches' ) ) ) {
			$caches[] = 'accel';
		}
		$caches[] = 'memcached';

		$this->addHTML(
			# Advanced settings
			$this->getFieldSetStart( 'config-advanced-settings' ) .
			# Object cache settings
			$this->parent->getRadioSet( array(
				'var' => 'wgMainCacheType',
				'label' => 'config-cache-options',
				'itemLabelPrefix' => 'config-cache-',
				'values' => $caches,
				'value' => 'none',
			) ) .
			$this->parent->getHelpBox( 'config-cache-help' ) .
			'<div id="config-memcachewrapper">' .
			$this->parent->getTextBox( array(
				'var' => '_MemCachedServers',
				'label' => 'config-memcached-servers',
				'help' => $this->parent->getHelpBox( 'config-memcached-help' )
			) ) .
			'</div>' .
			$this->getFieldSetEnd()
		);
		$this->endForm();
	}

	public function getCCPartnerUrl() {
		global $wgServer;
		$exitUrl = $wgServer . $this->parent->getUrl( array(
			'page' => 'Options',
			'SubmitCC' => 'indeed',
			'config__LicenseCode' => 'cc',
			'config_wgRightsUrl' => '[license_url]',
			'config_wgRightsText' => '[license_name]',
			'config_wgRightsIcon' => '[license_button]',
		) );
		$styleUrl = $wgServer . dirname( dirname( $this->parent->getUrl() ) ) .
			'/skins/common/config-cc.css';
		$iframeUrl = 'http://creativecommons.org/license/?' .
			wfArrayToCGI( array(
				'partner' => 'MediaWiki',
				'exit_url' => $exitUrl,
				'lang' => $this->getVar( '_UserLang' ),
				'stylesheet' => $styleUrl,
			) );
		return $iframeUrl;
	}

	public function getCCChooser() {
		$iframeAttribs = array(
			'class' => 'config-cc-iframe',
			'name' => 'config-cc-iframe',
			'id' => 'config-cc-iframe',
			'frameborder' => 0,
			'width' => '100%',
			'height' => '100%',
		);
		if ( $this->getVar( '_CCDone' ) ) {
			$iframeAttribs['src'] = $this->parent->getUrl( array( 'ShowCC' => 'yes' ) );
		} else {
			$iframeAttribs['src'] = $this->getCCPartnerUrl();
		}

		return
			"<div class=\"config-cc-wrapper\" id=\"config-cc-wrapper\" style=\"display: none;\">\n" .
			Html::element( 'iframe', $iframeAttribs, '', false /* not short */ ) .
			"</div>\n";
	}

	public function getCCDoneBox() {
		$js = "parent.document.getElementById('config-cc-wrapper').style.height = '$1';";
		// If you change this height, also change it in config.css
		$expandJs = str_replace( '$1', '54em', $js );
		$reduceJs = str_replace( '$1', '70px', $js );
		return
			'<p>'.
			Html::element( 'img', array( 'src' => $this->getVar( 'wgRightsIcon' ) ) ) .
			'&#160;&#160;' .
			htmlspecialchars( $this->getVar( 'wgRightsText' ) ) .
			"</p>\n" .
			"<p style=\"text-align: center\">" .
			Html::element( 'a',
				array(
					'href' => $this->getCCPartnerUrl(),
					'onclick' => $expandJs,
				),
				wfMsg( 'config-cc-again' )
			) .
			"</p>\n" .
			"<script type=\"text/javascript\">\n" .
			# Reduce the wrapper div height
			htmlspecialchars( $reduceJs ) .
			"\n" .
			"</script>\n";
	}

	public function submitCC() {
		$newValues = $this->parent->setVarsFromRequest(
			array( 'wgRightsUrl', 'wgRightsText', 'wgRightsIcon' ) );
		if ( count( $newValues ) != 3 ) {
			$this->parent->showError( 'config-cc-error' );
			return;
		}
		$this->setVar( '_CCDone', true );
		$this->addHTML( $this->getCCDoneBox() );
	}

	public function submit() {
		$this->parent->setVarsFromRequest( array( '_RightsProfile', '_LicenseCode',
			'wgEnableEmail', 'wgPasswordSender', 'wgEnableUploads', 'wgLogo',
			'wgEnableUserEmail', 'wgEnotifUserTalk', 'wgEnotifWatchlist',
			'wgEmailAuthentication', 'wgMainCacheType', '_MemCachedServers',
			'wgUseInstantCommons' ) );

		if ( !in_array( $this->getVar( '_RightsProfile' ),
			array_keys( $this->parent->rightsProfiles ) ) )
		{
			reset( $this->parent->rightsProfiles );
			$this->setVar( '_RightsProfile', key( $this->parent->rightsProfiles ) );
		}

		$code = $this->getVar( '_LicenseCode' );
		if ( $code == 'cc-choose' ) {
			if ( !$this->getVar( '_CCDone' ) ) {
				$this->parent->showError( 'config-cc-not-chosen' );
				return false;
			}
		} elseif ( in_array( $code, array_keys( $this->parent->licenses ) ) ) {
			$entry = $this->parent->licenses[$code];
			if ( isset( $entry['text'] ) ) {
				$this->setVar( 'wgRightsText', $entry['text'] );
			} else {
				$this->setVar( 'wgRightsText', wfMsg( 'config-license-' . $code ) );
			}
			$this->setVar( 'wgRightsUrl', $entry['url'] );
			$this->setVar( 'wgRightsIcon', $entry['icon'] );
		} else {
			$this->setVar( 'wgRightsText', '' );
			$this->setVar( 'wgRightsUrl', '' );
			$this->setVar( 'wgRightsIcon', '' );
		}

		$extsAvailable = $this->parent->findExtensions();
		$extsToInstall = array();
		foreach( $extsAvailable as $ext ) {
			if( $this->parent->request->getCheck( 'config_ext-' . $ext ) ) {
				$extsToInstall[] = $ext;
			}
		}
		$this->parent->setVar( '_Extensions', $extsToInstall );
		return true;
	}
	
}

class WebInstaller_Install extends WebInstallerPage {

	public function execute() {
		if( $this->parent->request->wasPosted() ) {
			return 'continue';
		} elseif( $this->getVar( '_InstallDone' ) ) {
			$this->startForm();
			$status = new Status();
			$status->warning( 'config-install-alreadydone' );
			$this->parent->showStatusBox( $status );
		} elseif( $this->getVar( '_UpgradeDone' ) ) {
			return 'skip';
		} else {
			$this->startForm();
			$this->addHTML("<ul>");
			$this->parent->performInstallation(
				array( $this, 'startStage'),
				array( $this, 'endStage' )
			);
			$this->addHTML("</ul>");
		}
		$this->endForm();
		return true;
	}

	public function startStage( $step ) {
		$this->addHTML( "<li>" . wfMsgHtml( "config-install-$step" ) . wfMsg( 'ellipsis') );
	}

	public function endStage( $step, $status ) {
		$msg = $status->isOk() ? 'config-install-step-done' : 'config-install-step-failed';
		$html = wfMsgHtml( 'word-separator' ) . wfMsgHtml( $msg );
		if ( !$status->isOk() ) {
			$html = "<span class=\"error\">$html</span>";
		}
		$this->addHTML( $html . "</li>\n" );
		if( !$status->isGood() ) {
			$this->parent->showStatusBox( $status );
		}
	}
	
}

class WebInstaller_Complete extends WebInstallerPage {
	
	public function execute() {
		$this->startForm();
		$this->addHTML(
			$this->parent->getInfoBox(
				wfMsgNoTrans( 'config-install-done',
					$GLOBALS['wgServer'] . $this->parent->getURL( array( 'localsettings' => 1 ) ),
					$GLOBALS['wgServer'] .
						$this->getVar( 'wgScriptPath' ) . '/index' .
						$this->getVar( 'wgScriptExtension' )
				), 'tick-32.png'
			)
		);
		$this->endForm( false );
	}
}

class WebInstaller_Restart extends WebInstallerPage {
	
	public function execute() {
		$r = $this->parent->request;
		if ( $r->wasPosted() ) {
			$really = $r->getVal( 'submit-restart' );
			if ( $really ) {
				$this->parent->session = array();
				$this->parent->happyPages = array();
				$this->parent->settings = array();
			}
			return 'continue';
		}

		$this->startForm();
		$s = $this->parent->getWarningBox( wfMsgNoTrans( 'config-help-restart' ) );
		$this->addHTML( $s );
		$this->endForm( 'restart' );
	}
	
}

abstract class WebInstaller_Document extends WebInstallerPage {
	
	protected abstract function getFileName();

	public  function execute() {
		$text = $this->getFileContents();
		$this->parent->output->addWikiText( $text );
		$this->startForm();
		$this->endForm( false );
	}

	public  function getFileContents() {
		return file_get_contents( dirname( __FILE__ ) . '/../../' . $this->getFileName() );
	}

	protected function formatTextFile( $text ) {
		$text = str_replace( array( '<', '{{', '[[' ),
			array( '&lt;', '&#123;&#123;', '&#91;&#91;' ), $text );
		// replace numbering with [1], [2], etc with MW-style numbering
		$text = preg_replace( "/\r?\n(\r?\n)?\\[\\d+\\]/m", "\\1#", $text );
		// join word-wrapped lines into one
		do {
			$prev = $text;
			$text = preg_replace( "/\n([\\*#])([^\r\n]*?)\r?\n([^\r\n#\\*:]+)/", "\n\\1\\2 \\3", $text );
		} while ( $text != $prev );
		// turn (bug nnnn) into links
		$text = preg_replace_callback('/bug (\d+)/', array( $this, 'replaceBugLinks' ), $text );
		// add links to manual to every global variable mentioned
		$text = preg_replace_callback('/(\$wg[a-z0-9_]+)/i', array( $this, 'replaceConfigLinks' ), $text );
		// special case for <pre> - formatted links
		do {
			$prev = $text;
			$text = preg_replace( '/^([^\\s].*?)\r?\n[\\s]+(https?:\/\/)/m', "\\1\n:\\2", $text );
		} while ( $text != $prev );
		return $text;
	}

	private function replaceBugLinks( $matches ) {
		return '<span class="config-plainlink">[https://bugzilla.wikimedia.org/' .
			$matches[1] . ' bug ' . $matches[1] . ']</span>';
	}

	private function replaceConfigLinks( $matches ) {
		return '<span class="config-plainlink">[http://www.mediawiki.org/wiki/Manual:' .
			$matches[1] . ' ' . $matches[1] . ']</span>';
	}
	
}

class WebInstaller_Readme extends WebInstaller_Document {
	
	protected function getFileName() { return 'README'; }

	public function getFileContents() {
		return $this->formatTextFile( parent::getFileContents() );
	}
	
}

class WebInstaller_ReleaseNotes extends WebInstaller_Document {
	
	protected function getFileName() { return 'RELEASE-NOTES'; }

	public function getFileContents() {
		return $this->formatTextFile( parent::getFileContents() );
	}
	
}

class WebInstaller_UpgradeDoc extends WebInstaller_Document {
	
	protected function getFileName() { return 'UPGRADE'; }

	public function getFileContents() {
		return $this->formatTextFile( parent::getFileContents() );
	}
	
}

class WebInstaller_Copying extends WebInstaller_Document {
	
	protected function getFileName() { return 'COPYING'; }

	public function getFileContents() {
		$text = parent::getFileContents();
		$text = str_replace( "\x0C", '', $text );
		$text = preg_replace_callback( '/\n[ \t]+/m', array( 'WebInstaller_Copying', 'replaceLeadingSpaces' ), $text );
		$text = '<tt>' . nl2br( $text ) . '</tt>';
		return $text;
	}

	private static function replaceLeadingSpaces( $matches ) {
		return "\n" . str_repeat( '&#160;', strlen( $matches[0] ) );
	}
	
}