install-utils.inc

   1 <?php
   2
   3 function install_version_checks() {
   4         # We dare not turn output buffer _off_ since this will break completely
   5         # if PHP is globally configured to run through a gzip filter.
   6         @ob_implicit_flush( true );
   7
   8         if( !function_exists( 'version_compare' ) ) {
   9                 # version_compare was introduced in 4.1.0
  10                 echo "Your PHP version is much too old; 4.0.x will _not_ work. 4.3.2 or higher is required. ABORTING.\n";
  11                 die( -1 );
  12         }
  13         if( version_compare( phpversion(), '4.3.2' ) < 0 ) {
  14                 echo "PHP 4.3.2 or higher is required. ABORTING.\n";
  15                 die( -1 );
  16         }
  17
  18         $gotdatabase = 0;
  19         ## XXX We should quiet the warnings thrown here
  20         if (extension_loaded('mysql') or dl('mysql.so')) {
  21                 $gotdatabase = 'mysql';
  22         }
  23         else if (extension_loaded('pgsql') or dl('pgsql.so')) {
  24                 $gotdatabase = 'pg';
  25         }
  26         if (!$gotdatabase) {
  27                 print "Could not load the MySQL or the PostgreSQL driver! Please compile ".
  28                           "php with either --with-mysql or --with-pgsql, or install the mysql.so or pg.so module.\n";
  29                 exit;
  30         }
  31
  32         global $wgCommandLineMode;
  33         $wgCommandLineMode = true;
  34         umask( 000 );
  35         set_time_limit( 0 );
  36 }
  37
  38 function copyfile( $sdir, $name, $ddir, $perms = 0664 ) {
  39         copyfileto( $sdir, $name, $ddir, $name, $perms );
  40 }
  41
  42 function copyfileto( $sdir, $sname, $ddir, $dname, $perms = 0664 ) {
  43         global $wgInstallOwner, $wgInstallGroup;
  44
  45         $d = "{$ddir}/{$dname}";
  46         if ( copy( "{$sdir}/{$sname}", $d ) ) {
  47                 if ( isset( $wgInstallOwner ) ) { chown( $d, $wgInstallOwner ); }
  48                 if ( isset( $wgInstallGroup ) ) { chgrp( $d, $wgInstallGroup ); }
  49                 chmod( $d, $perms );
  50                 # print "Copied \"{$sname}\" to \"{$d}\".\n";
  51         } else {
  52                 print "Failed to copy file \"{$sname}\" to \"{$ddir}/{$dname}\".\n";
  53                 exit();
  54         }
  55 }
  56
  57 function copydirectory( $source, $dest ) {
  58         $handle = opendir( $source );
  59         while ( false !== ( $f = readdir( $handle ) ) ) {
  60                 $fullname = "$source/$f";
  61                 if ( $f{0} != '.' && is_file( $fullname ) ) {
  62                         copyfile( $source, $f, $dest );
  63                 }
  64         }
  65 }
  66
  67 function readconsole( $prompt = '' ) {
  68         static $isatty = null, $fp = null;
  69         if ( is_null( $fp ) ) {
  70                 $fp = fopen( 'php://stdin', 'r' );
  71         }
  72         if ( is_null( $isatty ) ) {
  73                 if ( !function_exists( 'posix_isatty' ) || posix_isatty( $fp ) ) {
  74                         $isatty = true;
  75                 } else {
  76                         $isatty = false;
  77                 }
  78         }
  79
  80         if ( $isatty && function_exists( 'readline' ) ) {
  81                 return readline( $prompt );
  82         } else {
  83                 if ( $isatty ) {
  84                         print $prompt;
  85                 }
  86                 if ( feof( $fp ) ) {
  87                         return false;
  88                 }
  89                 $st = fgets($fp, 1024);
  90                 if ($st === false) return false;
  91                 $resp = trim( $st );
  92                 return $resp;
  93         }
  94 }
  95
  96 #
  97 # Read and execute SQL commands from a file
  98 #
  99 function dbsource( $fname, $db = false ) {
 100         if ( !$db ) {
 101                 // Try $wgDatabase, which is used in the install and update scripts
 102                 global $wgDatabase;
 103                 if ( isset( $wgDatabase ) ) {
 104                         $db =& $wgDatabase;
 105                 } else {
 106                         // No? Well, we must be outside of those scripts, so use the standard method
 107                         $db =& wfGetDB( DB_MASTER );
 108                 }
 109         }
 110         $error = $db->sourceFile( $fname );
 111         if ( $error !== true ) {
 112                 print $error;
 113                 exit(1);
 114         }
 115 }
 116
 117 # Obsolete, use Database::fieldExists()
 118 function field_exists( $table, $field ) {
 119         $fname = 'Update script: field_exists';
 120         $db =& wfGetDB( DB_SLAVE );
 121         $res = $db->query( "DESCRIBE $table", $fname );
 122         $found = false;
 123
 124         while ( $row = $db->fetchObject( $res ) ) {
 125                 if ( $row->Field == $field ) {
 126                         $found = true;
 127                         break;
 128                 }
 129         }
 130         return $found;
 131 }
 132
 133 # Obsolete Database::tableExists()
 134 function table_exists( $db ) {
 135         global $wgDBname;
 136         $res = mysql_list_tables( $wgDBname );
 137         if( !$res ) {
 138                 echo "** " . mysql_error() . "\n";
 139                 return false;
 140         }
 141         for( $i = mysql_num_rows( $res ) - 1; $i--; $i > 0 ) {
 142                 if( mysql_tablename( $res, $i ) == $db ) return true;
 143         }
 144         return false;
 145 }
 146
 147 # Obsolete, use Database:fieldInfo()
 148 function field_info( $table, $field ) {
 149         $res = mysql_query( "SELECT * FROM $table LIMIT 1" );
 150         $n = mysql_num_fields( $res );
 151         for( $i = 0; $i < $n; $i++ ) {
 152                 $meta = mysql_fetch_field( $res, $i );
 153                 if( $field == $meta->name ) {
 154                         return $meta;
 155                 }
 156         }
 157         return false;
 158 }
 159
 160 ?>