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. 5.0.0 or higher is required. ABORTING.\n";
  11                 die( -1 );
  12         }
  13         if( version_compare( phpversion(), '5.0.0' ) < 0 ) {
  14                 echo "PHP 5.0.0 or higher is required. If PHP 5 is available only when \n".
  15    "PHP files have a .php5 extension, please navigate to <a href=\"index.php5\">index.php5</a> \n".
  16    "to continue installation. ABORTING.\n";
  17                 die( -1 );
  18         }
  19
  20         // Test for PHP bug which breaks PHP 5.0.x on 64-bit...
  21         // As of 1.8 this breaks lots of common operations instead
  22         // of just some rare ones like export.
  23         $borked = str_replace( 'a', 'b', array( -1 => -1 ) );
  24         if( !isset( $borked[-1] ) ) {
  25                 echo "PHP 5.0.x is buggy on your 64-bit system; you must upgrade to PHP 5.1.x\n" .
  26                         "or higher. ABORTING. (http://bugs.php.net/bug.php?id=34879 for details)\n";
  27                 die( -1 );
  28         }
  29
  30         global $wgCommandLineMode;
  31         $wgCommandLineMode = true;
  32         umask( 000 );
  33         @set_time_limit( 0 );
  34 }
  35
  36 function copyfile( $sdir, $name, $ddir, $perms = 0664 ) {
  37         copyfileto( $sdir, $name, $ddir, $name, $perms );
  38 }
  39
  40 function copyfileto( $sdir, $sname, $ddir, $dname, $perms = 0664 ) {
  41         global $wgInstallOwner, $wgInstallGroup;
  42
  43         $d = "{$ddir}/{$dname}";
  44         if ( copy( "{$sdir}/{$sname}", $d ) ) {
  45                 if ( isset( $wgInstallOwner ) ) { chown( $d, $wgInstallOwner ); }
  46                 if ( isset( $wgInstallGroup ) ) { chgrp( $d, $wgInstallGroup ); }
  47                 chmod( $d, $perms );
  48                 # print "Copied \"{$sname}\" to \"{$d}\".\n";
  49         } else {
  50                 print "Failed to copy file \"{$sname}\" to \"{$ddir}/{$dname}\".\n";
  51                 exit();
  52         }
  53 }
  54
  55 function copydirectory( $source, $dest ) {
  56         $handle = opendir( $source );
  57         while ( false !== ( $f = readdir( $handle ) ) ) {
  58                 $fullname = "$source/$f";
  59                 if ( $f{0} != '.' && is_file( $fullname ) ) {
  60                         copyfile( $source, $f, $dest );
  61                 }
  62         }
  63 }
  64
  65 function readconsole( $prompt = '' ) {
  66         static $isatty = null;
  67         if ( is_null( $isatty ) ) {
  68                 if ( !function_exists( 'posix_isatty' ) || posix_isatty( 0 /*STDIN*/ ) ) {
  69                         $isatty = true;
  70                 } else {
  71                         $isatty = false;
  72                 }
  73         }
  74
  75         if ( $isatty && function_exists( 'readline' ) ) {
  76                 return readline( $prompt );
  77         } else {
  78                 if ( $isatty ) {
  79                         print $prompt;
  80                 }
  81                 if ( feof( STDIN ) ) {
  82                         return false;
  83                 }
  84                 $st = fgets(STDIN, 1024);
  85                 if ($st === false) return false;
  86                 $resp = trim( $st );
  87                 return $resp;
  88         }
  89 }
  90
  91 #
  92 # Read and execute SQL commands from a file
  93 #
  94 function dbsource( $fname, $db = false ) {
  95         if ( !$db ) {
  96                 // Try $wgDatabase, which is used in the install and update scripts
  97                 global $wgDatabase;
  98                 if ( isset( $wgDatabase ) ) {
  99                         $db = $wgDatabase;
 100                 } else {
 101                         // No? Well, we must be outside of those scripts, so use the standard method
 102                         $db = wfGetDB( DB_MASTER );
 103                 }
 104         }
 105         $error = $db->sourceFile( $fname );
 106         if ( $error !== true ) {
 107                 print $error;
 108                 exit(1);
 109         }
 110 }
 111
 112 /**
 113  * Get the value of session.save_path
 114  *
 115  * Per http://www.php.net/manual/en/ref.session.php#ini.session.save-path,
 116  * this might have some additional preceding parts which need to be
 117  * ditched
 118  *
 119  * @return string
 120  */
 121 function mw_get_session_save_path() {
 122         $path = ini_get( 'session.save_path' );
 123         $path = substr( $path, strrpos( $path, ';' ) );
 124         return $path;
 125 }
 126
 127 /**
 128  * Is dl() available to us?
 129  *
 130  * According to http://www.php.net/manual/en/function.dl.php, dl()
 131  * is *not* available when `enable_dl` is off, or under `safe_mode`
 132  *
 133  * @return bool
 134  */
 135 function mw_have_dl() {
 136         return function_exists( 'dl' )
 137                 && is_callable( 'dl' )
 138                 && wfIniGetBool( 'enable_dl' )
 139                 && !wfIniGetBool( 'safe_mode' );
 140 }