158 lines
5.4 KiB
PHP
158 lines
5.4 KiB
PHP
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<?php
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/**
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* Check PHP Version, as well as for composer dependencies in entry points,
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* and display something vaguely comprehensible in the event of a totally
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* unrecoverable error.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*/
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/**
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* Check php version and that external dependencies are installed, and
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* display an informative error if either condition is not satisfied.
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*/
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function wfEntryPointCheck( $entryPoint ) {
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if ( !function_exists( 'version_compare' )
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|| version_compare( PHP_VERSION, '5.3.3' ) < 0
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|| !file_exists( dirname( __FILE__ ) . '/../vendor/autoload.php' )
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) {
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wfPHPVersionError( $entryPoint );
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}
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}
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/**
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* Display something vaguely comprehensible in the event of a totally unrecoverable error.
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* Does not assume access to *anything*; no globals, no autoloader, no database, no localisation.
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* Safe for PHP4 (and putting this here means that WebStart.php and GlobalSettings.php
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* no longer need to be).
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*
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* Calling this function kills execution immediately.
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*
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* @param string $type Which entry point we are protecting. One of:
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* - index.php
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* - load.php
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* - api.php
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* - mw-config/index.php
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* - cli
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*
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* @note Since we can't rely on anything, the minimum PHP versions and MW current
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* version are hardcoded here
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*/
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function wfPHPVersionError( $type ) {
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$mwVersion = '1.26';
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$minimumVersionPHP = '5.3.3';
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$phpVersion = PHP_VERSION;
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$protocol = isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0';
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$message = "MediaWiki $mwVersion requires at least "
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. "PHP version $minimumVersionPHP, you are using PHP $phpVersion. Installing some "
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. " external dependencies (e.g. via composer) is also required.";
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if ( $type == 'cli' ) {
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$finalOutput = "Error: You are missing some external dependencies or are using on older PHP version. \n"
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. "MediaWiki $mwVersion needs PHP $minimumVersionPHP or higher.\n\n"
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. "Check if you have a newer php executable with a different name, such as php5.\n\n"
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. "MediaWiki now also has some external dependencies that need to be installed\n"
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. "via composer or from a separate git repo. Please see\n"
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. "https://www.mediawiki.org/wiki/Download_from_Git#Fetch_external_libraries\n"
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. "for help on installing the required components.";
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} elseif ( $type == 'index.php' || $type == 'mw-config/index.php' ) {
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$pathinfo = pathinfo( $_SERVER['SCRIPT_NAME'] );
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if ( $type == 'mw-config/index.php' ) {
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$dirname = dirname( $pathinfo['dirname'] );
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} else {
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$dirname = $pathinfo['dirname'];
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}
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$encLogo = htmlspecialchars(
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str_replace( '//', '/', $dirname . '/' ) .
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'resources/assets/mediawiki.png'
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);
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header( "$protocol 500 MediaWiki configuration Error" );
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header( 'Content-type: text/html; charset=UTF-8' );
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// Don't cache error pages! They cause no end of trouble...
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header( 'Cache-control: none' );
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header( 'Pragma: no-cache' );
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$finalOutput = <<<HTML
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<!DOCTYPE html>
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<html lang="en" dir="ltr">
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<head>
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<meta charset="UTF-8" />
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<title>MediaWiki {$mwVersion}</title>
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<style media='screen'>
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body {
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color: #000;
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background-color: #fff;
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font-family: sans-serif;
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padding: 2em;
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text-align: center;
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}
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p, img, h1, h2 {
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text-align: left;
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margin: 0.5em 0 1em;
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}
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h1 {
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font-size: 120%;
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}
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h2 {
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font-size: 110%;
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}
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</style>
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</head>
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<body>
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<img src="{$encLogo}" alt='The MediaWiki logo' />
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<h1>MediaWiki {$mwVersion} internal error</h1>
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<div class='error'>
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<p>
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{$message}
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</p>
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<h2>Supported PHP versions</h2>
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<p>
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Please consider <a href="http://www.php.net/downloads.php">upgrading your copy of PHP</a>.
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PHP versions less than 5.3.0 are no longer supported by the PHP Group and will not receive
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security or bugfix updates.
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</p>
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<p>
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If for some reason you are unable to upgrade your PHP version, you will need to
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<a href="https://www.mediawiki.org/wiki/Download">download</a> an older version
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of MediaWiki from our website. See our
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<a href="https://www.mediawiki.org/wiki/Compatibility#PHP">compatibility page</a>
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for details of which versions are compatible with prior versions of PHP.
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</p>
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<h2>External dependencies</h2>
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<p>
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MediaWiki now also has some external dependencies that need to be installed via
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composer or from a separate git repo. Please see
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<a href="https://www.mediawiki.org/wiki/Download_from_Git#Fetch_external_libraries">mediawiki.org</a>
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for help on installing the required components.
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</p>
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</div>
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</body>
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</html>
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HTML;
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// Handle everything that's not index.php
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} else {
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// So nothing thinks this is JS or CSS
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$finalOutput = ( $type == 'load.php' ) ? "/* $message */" : $message;
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header( "$protocol 500 MediaWiki configuration Error" );
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}
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echo "$finalOutput\n";
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die( 1 );
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}
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