<?php
+/**
+ * This file contains functions used by the install script (config/index.php)
+ * and maintenance scripts. It is not loaded in normal web requests.
+ *
+ * @file
+ */
+
function install_version_checks() {
# We dare not turn output buffer _off_ since this will break completely
# if PHP is globally configured to run through a gzip filter.
@ob_implicit_flush( true );
-
+
if( !function_exists( 'version_compare' ) ) {
# version_compare was introduced in 4.1.0
- die( "Your PHP version is much too old; 4.0.x will _not_ work. 4.3.2 or higher is recommended. ABORTING.\n" );
+ echo "Your PHP version is much too old; 4.0.x will _not_ work. 5.0.0 or higher is required. ABORTING.\n";
+ die( -1 );
}
- if( version_compare( phpversion(), '4.3.2' ) < 0 ) {
- echo "WARNING: PHP 4.3.2 or higher is recommended. Older versions from 4.1.x up may work but are not actively supported.\n\n";
+ if( version_compare( phpversion(), '5.0.0' ) < 0 ) {
+ echo "PHP 5.0.0 or higher is required. If PHP 5 is available only when \n".
+ "PHP files have a .php5 extension, please navigate to <a href=\"index.php5\">index.php5</a> \n".
+ "to continue installation. ABORTING.\n";
+ die( -1 );
}
- if (!extension_loaded('mysql')) {
- if (!dl('mysql.so')) {
- print 'Could not load MySQL driver! Please compile '.
- "php --with-mysql or install the mysql.so module.\n";
- exit;
- }
+ // Test for PHP bug which breaks PHP 5.0.x on 64-bit...
+ // As of 1.8 this breaks lots of common operations instead
+ // of just some rare ones like export.
+ $borked = str_replace( 'a', 'b', array( -1 => -1 ) );
+ if( !isset( $borked[-1] ) ) {
+ echo "PHP 5.0.x is buggy on your 64-bit system; you must upgrade to PHP 5.1.x\n" .
+ "or higher. ABORTING. (http://bugs.php.net/bug.php?id=34879 for details)\n";
+ die( -1 );
+ }
+
+ $test = new PhpXmlBugTester();
+ if( !$test->ok ) {
+ echo "Your system has a combination of PHP and libxml2 versions which is buggy\n" .
+ "and can cause hidden data corruption in MediaWiki and other web apps.\n" .
+ "Upgrade to PHP 5.2.9 or later and libxml2 2.7.3 or later!\n" .
+ "ABORTING (http://bugs.php.net/bug.php?id=45996 for details).\n";
+ die( -1 );
}
+
+ $test = new PhpRefCallBugTester;
+ $test->execute();
+ if ( !$test->ok ) {
+ echo "PHP 5.3.1 is not compatible with MediaWiki due to a bug involving\n" .
+ "reference parameters to __call. Upgrade to PHP 5.3.2 or higher, or \n" .
+ "downgrade to PHP 5.3.0 to fix this.\n" .
+ "ABORTING (see http://bugs.php.net/bug.php?id=50394 for details)\n";
+ die( -1 );
+ }
+
global $wgCommandLineMode;
$wgCommandLineMode = true;
umask( 000 );
- set_time_limit( 0 );
+ @set_time_limit( 0 );
}
function copyfile( $sdir, $name, $ddir, $perms = 0664 ) {
}
}
-function readconsole( $prompt = '' ) {
- if ( function_exists( 'readline' ) ) {
- return readline( $prompt );
- } else {
- print $prompt;
- $fp = fopen( 'php://stdin', 'r' );
- $st = fgets($fp, 1024);
- if ($st === false) return false;
- $resp = trim( $st );
- fclose( $fp );
- return $resp;
+/**
+ * Test for PHP+libxml2 bug which breaks XML input subtly with certain versions.
+ * http://bugs.php.net/bug.php?id=45996
+ * Known fixed with PHP 5.2.9 + libxml2-2.7.3
+ */
+class PhpXmlBugTester {
+ var $parsedData = '';
+ var $ok = false;
+ function __construct() {
+ $charData = '<b>c</b>';
+ $xml = '<a>' . htmlspecialchars( $charData ) . '</a>';
+
+ $parser = xml_parser_create();
+ xml_set_character_data_handler( $parser, array( $this, 'chardata' ) );
+ $parsedOk = xml_parse($parser, $xml, true);
+ $this->ok = $parsedOk && ($this->parsedData == $charData);
}
-}
-
-function replacevars( $ins ) {
- $varnames = array(
- 'wgDBserver', 'wgDBname', 'wgDBintlname', 'wgDBuser',
- 'wgDBpassword', 'wgDBsqluser', 'wgDBsqlpassword',
- 'wgDBadminuser', 'wgDBadminpassword', 'wgDBprefix'
- );
-
- foreach ( $varnames as $var ) {
- if( isset( $GLOBALS[$var] ) ) {
- $val = addslashes( $GLOBALS[$var] );
- $ins = str_replace( '{$' . $var . '}', $val, $ins );
- $ins = str_replace( '/*$' . $var . '*/`', '`' . $val, $ins );
- $ins = str_replace( '/*$' . $var . '*/', $val, $ins );
- }
+ function chardata($parser, $data) {
+ $this->parsedData .= $data;
}
- return $ins;
}
-#
-# Read and execute SQL commands from a file
-#
-function dbsource( $fname, $database = false ) {
- $fp = fopen( $fname, 'r' );
- if ( false === $fp ) {
- print "Could not open \"{$fname}\".\n";
- exit();
- }
-
- $cmd = "";
- $done = false;
+/**
+ * Test for PHP bug #50394 (PHP 5.3.x conversion to null only, not 5.2.x)
+ */
+class PhpRefCallBugTester {
+ public $ok = false;
- while ( ! feof( $fp ) ) {
- $line = trim( fgets( $fp, 1024 ) );
- $sl = strlen( $line ) - 1;
-
- if ( $sl < 0 ) { continue; }
- if ( '-' == $line{0} && '-' == $line{1} ) { continue; }
+ function __call( $name, $args ) {
+ $old = error_reporting( E_ALL & ~E_WARNING );
+ call_user_func_array( array( $this, 'checkForBrokenRef' ), $args );
+ error_reporting( $old );
+ }
- if ( ';' == $line{$sl} ) {
- $done = true;
- $line = substr( $line, 0, $sl );
+ function checkForBrokenRef( &$var ) {
+ if ( $var ) {
+ $this->ok = true;
}
+ }
- if ( '' != $cmd ) { $cmd .= ' '; }
- $cmd .= $line;
-
- if ( $done ) {
- $cmd = replacevars( $cmd );
- if( $database )
- $res = $database->query( $cmd );
- else
- $res = mysql_query( $cmd );
-
- if ( false === $res ) {
- $err = mysql_error();
- print "Query \"{$cmd}\" failed with error code \"$err\".\n";
- exit();
- }
+ function execute() {
+ $var = true;
+ call_user_func_array( array( $this, 'foo' ), array( &$var ) );
+ }
+}
- $cmd = '';
- $done = false;
+function readconsole( $prompt = '' ) {
+ static $isatty = null;
+ if ( is_null( $isatty ) ) {
+ if ( !function_exists( 'posix_isatty' ) || posix_isatty( 0 /*STDIN*/ ) ) {
+ $isatty = true;
+ } else {
+ $isatty = false;
}
}
- fclose( $fp );
-}
-# Obsolete, use Database::fieldExists()
-function field_exists( $table, $field ) {
- $fname = 'Update script: field_exists';
- $db =& wfGetDB( DB_SLAVE );
- $res = $db->query( "DESCRIBE $table", $fname );
- $found = false;
-
- while ( $row = $db->fetchObject( $res ) ) {
- if ( $row->Field == $field ) {
- $found = true;
- break;
+ if ( $isatty && function_exists( 'readline' ) ) {
+ return readline( $prompt );
+ } else {
+ if ( $isatty ) {
+ print $prompt;
}
+ if ( feof( STDIN ) ) {
+ return false;
+ }
+ $st = fgets(STDIN, 1024);
+ if ($st === false) return false;
+ $resp = trim( $st );
+ return $resp;
}
- return $found;
}
-# Obsolete Database::tableExists()
-function table_exists( $db ) {
- global $wgDBname;
- $res = mysql_list_tables( $wgDBname );
- if( !$res ) {
- echo "** " . mysql_error() . "\n";
- return false;
+#
+# Read and execute SQL commands from a file
+#
+function dbsource( $fname, $db = false ) {
+ if ( !$db ) {
+ // Try $wgDatabase, which is used in the install and update scripts
+ global $wgDatabase;
+ if ( isset( $wgDatabase ) ) {
+ $db = $wgDatabase;
+ } else {
+ // No? Well, we must be outside of those scripts, so use the standard method
+ $db = wfGetDB( DB_MASTER );
+ }
}
- for( $i = mysql_num_rows( $res ) - 1; $i--; $i > 0 ) {
- if( mysql_tablename( $res, $i ) == $db ) return true;
+ $error = $db->sourceFile( $fname );
+ if ( $error !== true ) {
+ print $error;
+ exit(1);
}
- return false;
}
-# Obsolete, use Database:fieldInfo()
-function field_info( $table, $field ) {
- $res = mysql_query( "SELECT * FROM $table LIMIT 1" );
- $n = mysql_num_fields( $res );
- for( $i = 0; $i < $n; $i++ ) {
- $meta = mysql_fetch_field( $res, $i );
- if( $field == $meta->name ) {
- return $meta;
- }
- }
- return false;
+/**
+ * Get the value of session.save_path
+ *
+ * Per http://www.php.net/manual/en/ref.session.php#ini.session.save-path,
+ * this might have some additional preceding parts which need to be
+ * ditched
+ *
+ * @return string
+ */
+function mw_get_session_save_path() {
+ $path = ini_get( 'session.save_path' );
+ $path = substr( $path, strrpos( $path, ';' ) );
+ return $path;
}
-?>
+/**
+ * Is dl() available to us?
+ *
+ * According to http://www.php.net/manual/en/function.dl.php, dl()
+ * is *not* available when `enable_dl` is off, or under `safe_mode`
+ *
+ * @return bool
+ */
+function mw_have_dl() {
+ return function_exists( 'dl' )
+ && is_callable( 'dl' )
+ && wfIniGetBool( 'enable_dl' )
+ && !wfIniGetBool( 'safe_mode' );
+}
scripts.mit.edu / autoinstalls / mediawiki.git / blobdiff