<?php
// don't ever call this file directly!
if( strpos( $_SERVER["REQUEST_URI"], 'index-install.php' ) ) {
	header( "Location: index.php" );
	die();
}
if( $_SERVER[ 'HTTP_HOST' ] == 'localhost' ) {
	die( "<h2>Warning!</h2> Installing to http://localhost/ is not supported. Please use <a href='http://localhost.localdomain/'>http://localhost.localdomain/</a> instead." );
}
define('WP_INSTALLING', true);

function printheader() {
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
        <title>WordPress &rsaquo; Installation</title>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <style media="screen" type="text/css">
        html {
                background: #eee;
        }
        body {
                background: #fff;
                color: #000;
                font-family: Georgia, "Times New Roman", Times, serif;
                margin-left: 20%;
                margin-right: 20%;
                padding: .2em 2em;
        }
        
        h1, h2 {
                color: #006;
                font-size: 18px;
                font-weight: lighter;
        }
        
        p, li, dt {
                line-height: 140%;
                padding-bottom: 2px;
        }

        ul, ol {
                padding: 5px 5px 5px 20px;
        }
        #logo {
                margin-bottom: 2em;
        }
.step a, .step input {
        font-size: 2em;
}
.step, th {
        text-align: right;
}
#footer {
text-align: center; border-top: 1px solid #ccc; padding-top: 1em; font-style: italic;
}
.fakelink {
    color: #00a;
    text-decoration: underline;
}
        </style>
</head>
<body>

<h1><img src="wp-includes/images/wordpress-mu.png" alt="WordPress MU" /></h1>
<?php
}

function check_writeable_dir( $dir, $ret ) {
	if( is_writeable( $dir  ) == false ) {
		print $dir." : <b style='color: #f55'>FAILED</b><br />Quick Fix: <code>chmod 777 $dir</code><br />";
		return false;
	} else {
		if( $ret == true ) {
			return true;
		} else {
			return false;
		}
	}
}

function filestats( $err ) {
	print "<h1>Server Summary</h1>";
	print "<p>If you post a message to the MU support forum at <a target='_blank' href='http://mu.wordpress.org/forums/'>http://mu.wordpress.org/forums/</a> then copy and paste the following information into your message:</p>";

	print "<blockquote style='background: #eee; border: 1px solid #333; padding: 5px;'>";
	print "<br /><strong>ERROR: $err</strong></br >";
	clearstatcache();
	$files = array( "htaccess.dist", ".htaccess" );
	while( list( $key, $val ) = each( $files ) ) { 
		$stats = @stat( $val );
		if( $stats ) {
			print "<h2>$val</h2>";
			print "&nbsp;&nbsp;&nbsp;&nbsp;uid/gid: " . $stats[ 'uid' ] . "/" . $stats[ 'gid' ] . "<br />\n";
			print "&nbsp;&nbsp;&nbsp;&nbsp;size: " . $stats[ 'size' ] . "<br />";
			print "&nbsp;&nbsp;&nbsp;&nbsp;perms: " . substr( sprintf('%o', fileperms( $val ) ), -4 ) . "<br />";
			print "&nbsp;&nbsp;&nbsp;&nbsp;readable: ";
			print is_readable( $val ) == true ? "yes" : "no";
			print "<br />";
			print "&nbsp;&nbsp;&nbsp;&nbsp;writeable: ";
			print is_writeable( $val ) == true ? "yes" : "no";
			print "<br />";
		} elseif( file_exists( $val ) == false ) {
			print "<h2>$val</h2>";
			print "&nbsp;&nbsp;&nbsp;&nbsp;FILE NOT FOUND: $val<br>";
		}
	}
	print "</blockquote>";
}

function do_htaccess( $oldfilename, $newfilename, $base, $url ) {
	// remove ending slash from $base and $url
	$htaccess = '';
	if( substr($base, -1 ) == '/') {
		$base = substr($base, 0, -1);
	}

	if( substr($url, -1 ) == '/') {
		$url = substr($url, 0, -1);
	}
	$err = '';
	if( is_file( $oldfilename ) ) {
		$fp = @fopen( $oldfilename, "r" );
		if( $fp ) {
			while( !feof( $fp ) )
			{
				$htaccess .= fgets( $fp, 4096 );
			}
			fclose( $fp );
			$htaccess = str_replace( "BASE", $base, $htaccess );
			if( touch( $newfilename ) ) {
				$fp = fopen( $newfilename, "w" );
				if( $fp ) {
					fwrite( $fp, $htaccess );
					fclose( $fp );
				} else {
					$err = "could not open $newfilename for writing";
				}
			} else {
				$err = "could not open $newfilename for writing";
			}
		} else {
			$err = "could not open $oldfilename for reading";
		}
	} else {
		$err = "$oldfilename not found";
	}

	if( $err != '' ) {
		print "<h1>Warning!</h1>";
		print "<p><strong>There was a problem creating the .htaccess file.</strong> </p>";
		print "<p style='color: #900'>Error: ";
		if( $err == "could not open $newfilename for writing" ) {
			print "Could Not Write To $newfilename.";
		} elseif( $err == "could not open $oldfilename for reading" ) {
			print "I could not read from $oldfilename. ";
		} elseif( $err == "$oldfilename not found" ) {
			print "The file, $oldfilename, is missing.";
		}
		print "</p>";
		filestats( $err );

		print "<p>Please ensure that the webserver can write to this directory.</p>";
		print "<p>If you use Cpanel then read <a href='http://mu.wordpress.org/forums/topic/99'>this post</a>. Cpanel creates files that I need to overwrite and you have to fix that.</p>";
		print "<p>If all else fails then you'll have to create it by hand:";
		print "<ul><li> Download htaccess.dist to your computer and open it in your favourite text editor.</li>
		<li> Replace the following text:<ul><li>BASE by '$base'</li><li>HOST by '$url'</li></li>
		<li> Rename htaccess.dist to .htaccess and upload it back to the same directory.</li></ul>";
		die( "Installation Aborted!" );
	}
}

function checkdirs() {
	$ret = true;
	$ret = check_writeable_dir( dirname(__FILE__), $ret );
	$ret = check_writeable_dir( dirname(__FILE__) . "/wp-content/", $ret );

	if( $ret == false ) {
		print "<h2>Warning!</h2>";
		print "<div style='border: 1px solid #ccc'>";
		print "<p style='font-weight: bold; padding-left: 10px'>One or more of the above directories must be made writeable by the webserver.<br>";
		print "Please <code>chmod 777 <q>directory-name</q></code> or <code>chown</code> that directory to the user the web server runs as (usually nobody, apache, or www-data)<br>";
		print "Refresh this page when you're done!<br></p>";
		print "</div>";
	}
	if( file_exists( "./.htaccess" ) && is_writeable( "./.htaccess" ) == false ) {
		$ret = false;
		print "<h2>Warning! .htaccess already exists.</h2>";
		print "<div style='border: 1px solid #ccc'>";
		print "<p style='font-weight: bold; padding-left: 10px'>A file with the name '.htaccess' already exists in this directory and I cannot write to it. Please ftp to the server and delete this file from this directory!<br />";
		print "Offending file: " . realpath( '.htaccess' ) . "</p>";
		print "</div>";
	}
	return $ret;
}

function step1() {
	print "<h2>Installing WP&micro;</h2>";
	$mod_rewrite_msg = "<p>If the <code>mod_rewrite</code> module is disabled ask your administrator to enable that module, or look at the <a href='http://httpd.apache.org/docs/mod/mod_rewrite.html'>Apache documentation</a> or <a href='http://www.google.com/search?q=apache+mod_rewrite'>elsewhere</a> for help setting it up.</p>";
	if( function_exists( "apache_get_modules" ) ) {
		$modules = apache_get_modules();
		if( in_array( "mod_rewrite", $modules ) == false ) {
			echo "<p><strong>Warning!</strong> It looks like mod_rewrite is not installed.</p>" . $mod_rewrite_msg;
		}
	} else {
		?><p>Please make sure <code>mod_rewrite</code> is installed as it will be activated at the end of this install.</p><?php
		echo $mod_rewrite_msg;
	}
	if( checkdirs() == false ) {
		return false;
	}

	// Create Blogs living area.
	@mkdir( dirname(__FILE__) . "/wp-content/blogs.dir", 0777 );

	$url = stripslashes( "http://".$_SERVER["SERVER_NAME"] . dirname( $_SERVER[ "SCRIPT_NAME" ] ) );
	if( substr( $url, -1 ) == '/' )
	$url = substr( $url, 0, -1 );
	$base = stripslashes( dirname( $_SERVER["SCRIPT_NAME"] ) );
	if( $base != "/") {
		$base .= "/";
	} 
	$realpath = dirname(__FILE__);

	return true;
}

function printstep1form( $dbname = 'wordpress', $uname = 'username', $pwd = 'password', $dbhost = 'localhost', $vhost = 'yes', $prefix = 'wp_' ) {
	$weblog_title = 'My new WPMU Site';
	$email = '';
	$hostname = $_SERVER[ 'HTTP_HOST' ];
	if( substr( $_SERVER[ 'HTTP_HOST' ], 0, 4 ) == 'www.' )
		$hostname = str_replace( "www.", "", $_SERVER[ 'HTTP_HOST' ] );
    ?>
    <form method='post' action='index.php'> 
    <input type='hidden' name='action' value='step2'>
    <h2>Blog Addresses</h2>
	<p>Please choose whether you would like blogs for the MU install to use sub-domains or sub-directories. You can not change this later. We recommend sub-domains.</p>
	<p><label><input type='radio' name='vhost' value='yes' <?php if( $vhost == 'yes' ) echo 'checked '; ?> /> Sub-domains (like <code>blog1.example.com</code>)</label><br />
	<label><input type='radio' name='vhost' value='no' <?php if( $vhost == 'no' ) echo 'checked '; ?> /> Sub-directories (like <code>example.com/blog1</code></label></p>
	
    <h2>Database</h2>

  <p>Below you should enter your database connection details. If you're not sure about these, contact your host. </p>
  <table cellpadding='5'> 
    <tr> 
      <th scope='row' width='33%'>Database Name</th> 
      <td><input name='dbname' type='text' size='45' value='<?php echo $dbname ?>' /></td>  
    </tr> 
    <tr> 
      <th scope='row'>User Name</th> 
      <td><input name='uname' type='text' size='45' value='<?php echo $uname ?>' /></td> 
    </tr> 
    <tr> 
      <th scope='row'>Password</th> 
      <td><input name='pwd' type='text' size='45' value='<?php echo $pwd ?>' /></td> 
    </tr> 
    <tr> 
      <th scope='row'>Database Host</th> 
      <td><input name='dbhost' type='text' size='45' value='<?php echo $dbhost ?>' /></td> 
    </tr>
  </table> 
  <h2>Server Address</h2>
  <p><label>What is the Internet address of your site? You should enter the shortest address possible. For example, use <em>example.com</em> instead of <em>www.example.com</em> but if you are going to use an address like <em>blogs.example.com</em> then enter that unaltered in the box below.<br /><b>Server Address:</b> <input type='text' name='basedomain' value='<?php echo $hostname ?>'></label></p>
  <h2>Site Details</h2>
  <table width='100%'> 
  <tr> 
  <th scope='row'>Site&nbsp;Title</th> 
  <td><input name='weblog_title' type='text' size='45' value='<?php echo $weblog_title ?>' /></td> 
  <td>What would you like to call your site? </td> 
  </tr> 
  <tr> 
  <th scope='row'>Email</th> 
  <td><input name='email' type='text' size='45' value='<?php echo $email ?>' /></td> 
  <td>Your email address.</td> 
  </tr> 
  </table> 
  <p class='submit'><input name='submit' type='submit' value='Submit' /> </p>
</form> 
<?php
}

function step2() {
	global $wpdb, $table_prefix, $base, $blog_id;
	$dbname  = $_POST['dbname'];
	$uname   = $_POST['uname'];
	$passwrd = $_POST['pwd'];
	$dbhost  = $_POST['dbhost'];
	$vhost   = $_POST['vhost' ]; 
	$prefix  = 'wp_';
	$base = stripslashes( dirname( $_SERVER["SCRIPT_NAME"] ) );
	if( $base != "/")
		$base .= "/";

	// Test the db connection.
	define('DB_NAME', $dbname);
	define('DB_USER', $uname);
	define('DB_PASSWORD', $passwrd);
	define('DB_HOST', $dbhost);

	if (!file_exists('wp-config-sample.php'))
		die('Sorry, I need a wp-config-sample.php file to work from. Please re-upload this file from your WordPress installation.');

	$configFile = file('wp-config-sample.php');
	// We'll fail here if the values are no good.
	require_once('wp-includes/wp-db.php');
	printheader();

	print "Creating Database Config File: ";

	$handle = fopen('wp-config.php', 'w');

	foreach ($configFile as $line_num => $line) {
		switch (trim( substr($line,0,16) )) {
			case "define('DB_NAME'":
				fwrite($handle, str_replace("wordpress", $dbname, $line));
				break;
			case "define('DB_USER'":
				fwrite($handle, str_replace("'username'", "'$uname'", $line));
				break;
			case "define('DB_PASSW":
				fwrite($handle, str_replace("'password'", "'$passwrd'", $line));
				break;
			case "define('DB_HOST'":
				fwrite($handle, str_replace("localhost", $dbhost, $line));
				break;
			case "define('VHOST',":
				fwrite($handle, str_replace("VHOSTSETTING", $vhost, $line));
				break;
			case '$table_prefix  =':
				fwrite($handle, str_replace('wp_', $prefix, $line));
				break;
			case '$base = \'BASE\';':
				fwrite($handle, str_replace('BASE', $base, $line));
				break;
			default:
				fwrite($handle, $line);
				break;
		}
	}
	fclose($handle);
	chmod('wp-config.php', 0644);
	print "<b style='color: #00aa00; font-weight: bold'>DONE</b><br />";
	define( 'VHOST', $vhost );
}

function step3() {
	global $wpdb, $current_site;
	$base = stripslashes( dirname( $_SERVER["SCRIPT_NAME"] ) );
	if( $base != "/") {
		$base .= "/";
	} 
	$domain =   $wpdb->escape( $_POST[ 'basedomain' ] );
	if( substr( $domain, 0, 4 ) == 'www.' )
		$domain = substr( $domain, 4 );

	$email = $wpdb->escape( $_POST[ 'email' ] );
	$weblog_title = $wpdb->escape( $_POST[ 'weblog_title' ] );

	// set up site tables
	$wpdb->query( "INSERT INTO ".$wpdb->sitemeta." (meta_id, site_id, meta_key, meta_value) VALUES (NULL, 1, 'admin_email', '".$email."')" );
	$wpdb->query( "INSERT INTO ".$wpdb->sitemeta." (meta_id, site_id, meta_key, meta_value) VALUES (NULL, 1, 'admin_user_id', '1')" );
	$wpdb->query( "INSERT INTO ".$wpdb->site." ( id, domain, path ) VALUES ( NULL, '$domain', '$base' )" );
	$wpdb->query( "INSERT INTO " . $wpdb->sitecategories . " ( cat_ID, cat_name, category_nicename, last_updated ) VALUES (1, 'Uncategorized', 'uncategorized', NOW())" );
	$wpdb->query( "INSERT INTO " . $wpdb->sitecategories . " ( cat_ID, cat_name, category_nicename, last_updated ) VALUES (2, 'Blogroll', 'blogroll', NOW())" );
	$wpdb->query( "INSERT INTO ".$wpdb->sitemeta." (meta_id, site_id, meta_key, meta_value) VALUES (NULL, 1, 'upload_filetypes', 'jpg jpeg png gif mp3 mov avi wmv midi mid pdf' )" );
	$wpdb->query( "INSERT INTO ".$wpdb->sitemeta." (meta_id, site_id, meta_key, meta_value) VALUES (NULL, 1, 'blog_upload_space', '10' )" );
	$wpdb->query( "INSERT INTO ".$wpdb->sitemeta." (meta_id, site_id, meta_key, meta_value) VALUES (NULL, 1, 'fileupload_maxk', '1500' )" );
	$wpdb->query( "INSERT INTO ".$wpdb->sitemeta." (meta_id, site_id, meta_key, meta_value) VALUES (NULL, 1, 'site_admins', '" . serialize( array( 'admin' ) ) . "' )" );
	$wpdb->query( "INSERT INTO ".$wpdb->sitemeta." (meta_id, site_id, meta_key, meta_value) VALUES (NULL, 1, 'allowed_themes', '" . serialize( array( 'WordPress Classic', 'WordPress Default' ) ) . "' )" );
	$wpdb->query( "INSERT INTO ".$wpdb->sitemeta." (meta_id, site_id, meta_key, meta_value) VALUES (NULL, 1, 'illegal_names', '" . serialize( array(  "www", "web", "root", "admin", "main", "invite", "administrator" ) ) . "' )" );
	$wpdb->query( "INSERT INTO ".$wpdb->sitemeta." (meta_id, site_id, meta_key, meta_value) VALUES (NULL, 1, 'welcome_email', 'Dear User,

Your new SITE_NAME blog has been successfully set up at:
BLOG_URL

You can log in to the administrator account with the following information:
 Username: USERNAME
 Password: PASSWORD
Login Here: BLOG_URLwp-login.php

We hope you enjoy your new weblog.
 Thanks!

--The Team @ SITE_NAME')" );
	$wpdb->query( "INSERT INTO ".$wpdb->sitemeta." (meta_id, site_id, meta_key, meta_value) VALUES (NULL, 1, 'first_post', 'Welcome to <a href=\"SITE_URL\">SITE_NAME</a>. This is your first post. Edit or delete it, then start blogging!' )" );

	$pass = substr( md5( rand() ), 5, 12 );
	$user_id = wpmu_create_user( 'admin', $pass, $email);

	$current_site->domain = $domain;
	$current_site->path = $base;
	$current_site->site_name = ucfirst( $domain );

	wpmu_create_blog( $domain, $base, $weblog_title, $user_id, array() );
	update_blog_option( 1, 'template', 'home');
	update_blog_option( 1, 'stylesheet', 'home');
	update_blog_option( 1, 'permalink_structure', '/blog/%year%/%monthnum%/%day%/%postname%/');
	update_blog_option( 1, 'rewrite_rules', '');
	$msg = "Your new WPMU site has been created at\nhttp://{$domain}{$base}\n\nLogin details:\nUsername: admin\nPassword: $pass\nLogin: http://{$domain}{$base}wp-login.php\n";
	wp_mail( $email, "Your new WPMU site is ready!", $msg, "From: wordpress@" . $_SERVER[ 'HTTP_HOST' ]  );
	print "<p>Congrats! Your <a href='http://{$domain}{$base}'>WPMU site</a> has been set up and you have been sent details of your login and password in an email.</p>";
}

function nowww() {
	$nowww = str_replace( 'www.', '', $_POST[ 'basedomain' ] );
	?>
	<h1>No-www</h1>
	<p>WordPress MU strips the string "www" from the URLs of sites using this software. It is still possible to visit your site using the "www" prefix with an address like <em><?php echo $_POST[ 'basedomain' ] ?></em> but any links will not have the "www" prefix. They will instead point at <?php echo $nowww ?>.</p>
	<p>The preferred method of hosting blogs is without the "www" prefix as it's more compact and simple.</p><p>You can still use "<?php echo $_POST[ 'basedomain' ] ?>" and URLs like "www.blog1.<?php echo $nowww; ?>" to address your site and blogs after installation but internal links will use the <?php echo $nowww ?> format.</p>
	<p><a target='_blank' href="http://no-www.org/">www. is depreciated</a> has a lot more information on why 'www.' isn't needed any more.</p>
	<p><form method='POST'>
	<input type='hidden' name='dbname' value='<?php echo $_POST[ 'dbname' ]; ?>'>
	<input type='hidden' name='uname' value='<?php echo $_POST[ 'uname' ]; ?>'>
	<input type='hidden' name='pwd' value='<?php echo $_POST[ 'pwd' ]; ?>'>
	<input type='hidden' name='dbhost' value='<?php echo $_POST[ 'dbhost' ]; ?>'>
	<input type='hidden' name='vhost' value='<?php echo $_POST[ 'vhost' ]; ?>'>
	<input type='hidden' name='weblog_title' value='<?php echo $_POST[ 'weblog_title' ]; ?>'>
	<input type='hidden' name='email' value='<?php echo $_POST[ 'email' ]; ?>'>
	<input type='hidden' name='action' value='step2'>
	<input type='hidden' name='basedomain' value='<?echo $nowww ?>'>
	<input type='submit' value='Continue'>
	</form></p>
	<?php
}

switch( $_POST[ 'action' ] ) {
	case "step2":
		if( substr( $_POST[ 'basedomain' ], 0, 4 ) == 'www.' ) {
			printheader();
			nowww();
			continue;
		}
		// get blog username
		// create wp-config.php 
		step2();
		// Install Blog!
		include_once('./wp-config.php');
		include_once('./wp-admin/upgrade-functions.php');
		// normalise hostname - no www.
		$_SERVER[ 'HTTP_HOST' ] = str_replace( 'www.', '', $_SERVER[ 'HTTP_HOST' ] );
		make_db_current_silent();
		populate_options();
		do_htaccess( 'htaccess.dist', '.htaccess', $base, '');
		step3();
	break;
	case "step3":
		// call createBlog();
		// create .htaccess
		// print login info and links.
		require_once('./wp-config.php');
		require_once('./wp-admin/upgrade-functions.php');
		make_db_current_silent();
		populate_options();
		do_htaccess( 'htaccess.dist', '.htaccess', $base, '');
		printheader();
		step3();
	break;
	default:
		// check that directories are writeable.
		// create wpmu-settings.php
		// get db auth info.
		printheader();
		if( step1() ) {
			printstep1form();
		}
	break;
}
?>
<br /><br />
<div align='center'>
<a href="http://mu.wordpress.org/">WordPress &micro;</a> | <a href="http://mu.wordpress.org/forums/">Support Forums</a>
</div>
</body>
</html>
