install-utils.inc

   1 <?
   2
   3 function install_version_checks() {
   4         if( !function_exists( "version_compare" ) ) {
   5                 # version_compare was introduced in 4.1.0
   6                 die( "Your PHP version is much too old; 4.0.x will _not_ work. 4.3.2 or higher is recommended. ABORTING.\n" );
   7         }
   8         if( version_compare( phpversion(), "4.3.2" ) < 0 ) {
   9                 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";
  10         }
  11         if( !ini_get( "register_globals" ) ) {
  12                 echo "WARNING: register_globals is not on; MediaWiki currently relies on this option.\n\n";
  13         }
  14
  15         if (!extension_loaded('mysql')) {
  16                 if (!dl('mysql.so')) {
  17                         print "Could not load MySQL driver! Please compile ".
  18                                   "php --with-mysql or install the mysql.so module.\n";
  19                 exit;
  20                 }
  21         }
  22
  23         global $wgCommandLineMode;
  24         $wgCommandLineMode = true;
  25         umask( 000 );
  26         set_time_limit( 0 );
  27 }
  28
  29 function copyfile( $sdir, $name, $ddir, $perms = 0664 ) {
  30         global $wgInstallOwner, $wgInstallGroup;
  31
  32         $d = "{$ddir}/{$name}";
  33         if ( copy( "{$sdir}/{$name}", $d ) ) {
  34                 if ( isset( $wgInstallOwner ) ) { chown( $d, $wgInstallOwner ); }
  35                 if ( isset( $wgInstallGroup ) ) { chgrp( $d, $wgInstallGroup ); }
  36                 chmod( $d, $perms );
  37                 # print "Copied \"{$name}\" to \"{$ddir}\".\n";
  38         } else {
  39                 print "Failed to copy file \"{$name}\" to \"{$ddir}\".\n";
  40                 exit();
  41         }
  42 }
  43
  44 function copydirectory( $source, $dest ) {
  45         $handle = opendir( $source );
  46         while ( false !== ( $f = readdir( $handle ) ) ) {
  47                 $fullname = "$source/$f";
  48                 if ( $f{0} !="." && is_file( $fullname ) ) {
  49                         copyfile( $source, $f, $dest );
  50                 }
  51         }
  52 }
  53
  54 function readconsole() {
  55         $fp = fopen( "php://stdin", "r" );
  56         $resp = trim( fgets( $fp, 1024 ) );
  57         fclose( $fp );
  58         return $resp;
  59 }
  60
  61
  62 function replacevars( $ins ) {
  63         $varnames = array(
  64                 "wgDBserver", "wgDBname", "wgDBintlname", "wgDBuser",
  65                 "wgDBpassword", "wgDBsqluser", "wgDBsqlpassword",
  66                 "wgDBadminuser", "wgDBadminpassword"
  67         );
  68
  69         foreach ( $varnames as $var ) {
  70                 global $$var;
  71                 $ins = str_replace( '{$' . $var . '}', $$var, $ins );
  72         }
  73         return $ins;
  74 }
  75
  76 #
  77 # Read and execute SQL commands from a file
  78 #
  79 function dbsource( $fname, $conn = false ) {
  80         $fp = fopen( $fname, "r" );
  81         if ( false === $fp ) {
  82                 print "Could not open \"{$fname}\".\n";
  83                 exit();
  84         }
  85
  86         $cmd = "";
  87         $done = false;
  88
  89         while ( ! feof( $fp ) ) {
  90                 $line = trim( fgets( $fp, 1024 ) );
  91                 $sl = strlen( $line ) - 1;
  92
  93                 if ( $sl < 0 ) { continue; }
  94                 if ( "-" == $line{0} && "-" == $line{1} ) { continue; }
  95
  96                 if ( ";" == $line{$sl} ) {
  97                         $done = true;
  98                         $line = substr( $line, 0, $sl );
  99                 }
 100
 101                 if ( "" != $cmd ) { $cmd .= " "; }
 102                 $cmd .= $line;
 103
 104                 if ( $done ) {
 105                         $cmd = replacevars( $cmd );
 106                         if( $conn )
 107                                 $res = mysql_query( $cmd, $conn );
 108                         else
 109                                 $res = mysql_query( $cmd );
 110
 111                         if ( false === $res ) {
 112                                 print "Query \"{$cmd}\" failed.\n";
 113                                 exit();
 114                         }
 115
 116                         $cmd = "";
 117                         $done = false;
 118                 }
 119         }
 120         fclose( $fp );
 121 }
 122
 123
 124 function field_exists( $table, $field ) {
 125         $fname = "Update script: field_exists";
 126         $res = wfQuery( "DESCRIBE $table", $fname );
 127         $found = false;
 128
 129         while ( $row = wfFetchObject( $res ) ) {
 130                 if ( $row->Field == $field ) {
 131                         $found = true;
 132                         break;
 133                 }
 134         }
 135         return $found;
 136 }
 137
 138
 139 function table_exists( $db ) {
 140         global $wgDBname;
 141         $res = mysql_list_tables( $wgDBname );
 142         if( !$res ) {
 143                 echo "** " . mysql_error() . "\n";
 144                 return false;
 145         }
 146         for( $i = mysql_num_rows( $res ) - 1; $i--; $i > 0 ) {
 147                 if( mysql_tablename( $res, $i ) == $db ) return true;
 148         }
 149         return false;
 150 }
 151
 152 function field_info( $table, $field ) {
 153         $res = mysql_query( "SELECT * FROM $table LIMIT 1" );
 154         $n = mysql_num_fields( $res );
 155         for( $i = 0; $i < $n; $i++ ) {
 156                 $meta = mysql_fetch_field( $res, $i );
 157                 if( $field == $meta->name ) {
 158                         return $meta;
 159                 }
 160         }
 161         return false;
 162 }
 163
 164 ?>