Preparations for Oracle database abstraction update.

[lhc/web/wiklou.git] / install-utils.inc

diff --git a/install-utils.inc b/install-utils.inc
index fa7b80e..ab8e15d 100644 (file)
--- a/install-utils.inc
+++ b/install-utils.inc
@@ -1,5 +1,12 @@
 <?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.
@@ -11,7 +18,9 @@ function install_version_checks() {
                die( -1 );
        }
        if( version_compare( phpversion(), '5.0.0' ) < 0 ) {
-               echo "PHP 5.0.0 or higher is required. ABORTING.\n";
+               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 );
        }
        
@@ -28,7 +37,7 @@ function install_version_checks() {
        global $wgCommandLineMode;
        $wgCommandLineMode = true;
        umask( 000 );
-       set_time_limit( 0 );
+       @set_time_limit( 0 );
 }
 
 function copyfile( $sdir, $name, $ddir, $perms = 0664 ) {
@@ -63,7 +72,7 @@ function copydirectory( $source, $dest ) {
 function readconsole( $prompt = '' ) {
        static $isatty = null;
        if ( is_null( $isatty ) ) {
-               if ( !function_exists( 'posix_isatty' ) || posix_isatty( STDIN ) ) {
+               if ( !function_exists( 'posix_isatty' ) || posix_isatty( 0 /*STDIN*/ ) ) {
                        $isatty = true;
                } else {
                        $isatty = false;
@@ -94,10 +103,10 @@ function dbsource( $fname, $db = false ) {
                // Try $wgDatabase, which is used in the install and update scripts
                global $wgDatabase;
                if ( isset( $wgDatabase ) ) {
-                       $db =& $wgDatabase;
+                       $db = $wgDatabase;
                } else {
                        // No? Well, we must be outside of those scripts, so use the standard method
-                       $db =& wfGetDB( DB_MASTER );
+                       $db = wfGetDB( DB_MASTER );
                }
        }
        $error = $db->sourceFile( $fname );
@@ -107,47 +116,32 @@ function dbsource( $fname, $db = false ) {
        }
 }
 
-# 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;
-               }
-       }
-       return $found;
-}
-
-# Obsolete Database::tableExists()
-function table_exists( $db ) {
-       global $wgDBname;
-       $res = mysql_list_tables( $wgDBname );
-       if( !$res ) {
-               echo "** " . mysql_error() . "\n";
-               return false;
-       }
-       for( $i = mysql_num_rows( $res ) - 1; $i--; $i > 0 ) {
-               if( mysql_tablename( $res, $i ) == $db ) return true;
-       }
-       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' );
+}
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