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<?php
/**
* @version $Header: /cvsroot/bitweaver/_bit_install/install_checks.php,v 1.4 2005/07/17 17:36:04 squareing Exp $
* @package install
* @subpackage functions
*/
// Copyright (c) 2002-2003, Luis Argerich, Garland Foster, Eduardo Polidor, et. al.
// All Rights Reserved. See copyright.txt for details and a complete list of authors.
// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
// assign next step in installation process
$smarty->assign( 'next_step',$step + 1 );
$check_settings = check_settings();
$smarty->assign( "error",$error );
$smarty->assign( "warning",$warning );
$smarty->assign( "required",$check_settings['required'] );
$smarty->assign( "extensions",$check_settings['extensions'] );
$smarty->assign( "recommended",$check_settings['recommended'] );
$smarty->assign( "show",$check_settings['show'] );
if( !isset( $_SERVER['HTTP_REFERER'] ) ) {
$smarty->assign( "http_referer_error", TRUE );
$error = TRUE;
}
/**
* check_settings
*/
function check_settings() {
global $smarty,$error,$warning;
$config_file = clean_file_path( empty($_SERVER['CONFIG_INC']) ? (KERNEL_PKG_PATH.'config_inc.php') : $_SERVER['CONFIG_INC'] );
$i = 0;
// required settings - if not met, are passed into the array $reqd
// PHP system checks
$phpvers = '4.1.0';
if( phpversion() < $phpvers ) {
$required[$i]['note'] = '<strong>PHP version</strong> should be greater than <strong>'.$phpvers.'</strong>.<br />Your installed version of PHP is <strong>'.phpversion().'</strong>.';
$required[$i]['passed'] = FALSE;
} else {
$required[$i]['note'] = '<strong>PHP version</strong> is greater than <strong>'.$phpvers.'</strong>.<br />Your installed version of PHP is <strong>'.phpversion().'</strong>.';
$required[$i]['passed'] = TRUE;
}
// check file and directory permissisions
$i++;
if( @file_exists( $config_file ) && @is_writable( $config_file ) ) {
$required[$i]['note'] = 'The configuration file \'<strong>config_inc.php</strong>\' is available and the file is writeable.';
$required[$i]['passed'] = TRUE;
} elseif( @file_exists( $config_file ) && !@is_writable( $config_file ) ) {
$required[$i]['note'] = 'The configuration file \'<strong>config_inc.php</strong>\' is available but the file is not writeable. Please execute something like:<br />chmod 777 '.$config_file;
$required[$i]['passed'] = FALSE;
} else {
$required[$i]['note'] = 'The configuration file \'<strong>config_inc.php</strong>\' is not available. Please execute something like:<br />touch '.KERNEL_PKG_PATH.'config_inc.php; chmod 777 '.$config_file;
$required[$i]['passed'] = FALSE;
}
$i++;
$dir_check = array( 'storage','temp' );
foreach( $dir_check as $d ) {
// final attempt to create the required directories
@mkdir( BIT_ROOT_PATH.$d,0644 );
if( @is_dir( BIT_ROOT_PATH.$d ) && is_writeable( BIT_ROOT_PATH.$d ) ) {
$required[$i]['note'] = 'The directory \'<strong>'.$d.'</strong>\' is available and it is writeable.';
$required[$i]['passed'] = TRUE;
} elseif( @is_dir( BIT_ROOT_PATH.$d ) && !is_writeable( BIT_ROOT_PATH.$d ) ) {
$required[$i]['note'] = 'The directory \'<strong>'.$d.'</strong>\' is available but it is not writeable.<br />Please execute something like:<br />chmod -R 777 '.BIT_ROOT_PATH.$d;
$required[$i]['passed'] = FALSE;
} else {
$required[$i]['note'] = 'The directory \'<strong>'.$d.'</strong>\' is not available and we cannot create it automaticalliy.<br />Please execute something like:<br />mkdir -m 777 '.BIT_ROOT_PATH.$d;
$required[$i]['passed'] = FALSE;
}
$i++;
}
foreach( $required as $r ) {
if( !$r['passed'] ) {
$error = TRUE;
}
}
$i = 0;
// check extensions
$php_ext = array(
'zlib' => 'The zlib compression libraries are used to pack and unpack compressed files such as zip files.',
'gd' => 'GD Libraries are used to manipulate images. We use these libraries to create thumbnails and convert images from one format to another. The GD libaries are quite limited and <strong>don\'t support</strong> a number of image formats including <strong>bmp</strong>. If you are planning on uploading and using a lot of images, we recommend you use ImageMagic instead.<br />If you are running Red Hat or Fedora Core, you can try running: yum install php-gd.',
'imagick' => 'ImageMagick supports a multitude of different image and video formats and <strong>can be used instead of the GD Libraries</strong>. Using these libraries will allow you to upload most image formats without any difficulties. It also requires less memory than the GD Libraries.<br />To find out more about <a class="external" href="http://www.imagemagick.org">ImageMagick</a>, please visit their homepage.
<dl>
<dt>*nix</dt>
<dd>Prebuilt RPMs are available for Fedora and RedHat from <a class="external" href="http://phprpms.sourceforge.net/imagick">phpRPMs</a> or compile a <a class="external" href="http://sourceforge.net/project/showfiles.php?group_id=112092&package_id=139307&release_id=292417">source RPM</a>.</dd>
<dt>Windows</dt>
<dd>For information on how to install ImageMagick on Windows, please visit <a class="external" href="http://www.bitweaver.org/wiki/ImagemagickOnWindows">Install ImageMagick on Windows</a>.</dd>
</dl>',
);
foreach( $php_ext as $ext => $note ) {
$extensions[$i]['note'] = 'The extension <strong>'.$ext.'</strong> is ';
if( extension_loaded( $ext ) ) {
$extensions[$i]['passed'] = TRUE;
} else {
$extensions[$i]['note'] .= 'not ';
$extensions[$i]['passed'] = FALSE;
}
$extensions[$i]['note'] .= 'available.<br />'.$note;
$i++;
}
foreach( $extensions as $e ) {
if( !$e['passed'] ) {
$warning = TRUE;
}
}
$i = 0;
// recommended php toggles - these don't need explicit explanations on how to rectify them
// start with special cases
$recommended[$i] = array( 'Memory Limit','memory_limit','shouldbe' => 'at least 8M','actual' => get_cfg_var( 'memory_limit' ) );
if( eregi_replace( 'M','',get_cfg_var( 'memory_limit' ) ) > 8 ) {
$recommended[$i]['passed'] = TRUE;
} else {
$recommended[$i]['passed'] = FALSE;
$smarty->assign( 'memory_warning', TRUE );
}
$i++;
// now continue with easy toggle checks
$php_rec_toggles = array(
array( 'Safe Mode','safe_mode','shouldbe' => 'OFF', ),
array( 'Display Errors','display_errors','shouldbe' => 'ON' ),
array( 'File Uploads','file_uploads','shouldbe' => 'ON' ),
array( 'Magic Quotes GPC','magic_quotes_gpc','shouldbe' => 'ON' ),
array( 'Magic Quotes Runtime','magic_quotes_runtime','shouldbe' => 'OFF' ),
array( 'Magic Quotes Sybase','magic_quotes_sybase','shouldbe' => 'OFF' ),
array( 'Register Globals','register_globals','shouldbe' => 'OFF' ),
array( 'Output Buffering','output_buffering','shouldbe' => 'OFF' ),
array( 'Session auto start','session.auto_start','shouldbe' => 'OFF' ),
);
foreach ($php_rec_toggles as $php_rec_toggle) {
$php_rec_toggle['actual'] = get_php_setting( $php_rec_toggle[1] );
if ( get_php_setting( $php_rec_toggle[1] ) == $php_rec_toggle['shouldbe'] ) {
$php_rec_toggle['passed'] = TRUE;
} else {
$php_rec_toggle['passed'] = FALSE;
}
$recommended[] = $php_rec_toggle;
$i++;
}
// settings that are useful to know about
$php_ini_gets = array(
array( '<strong>Maximum post size</strong> will restrict the size of files when you upload a file using a form.','post_max_size' ),
array( '<strong>Upload max filesize</strong> is related to maximim post size and will also limit the size of uploads.','upload_max_filesize' ),
array( '<strong>Maximum execution time</strong> is related to time outs in PHP - affects database upgrades and backups.','max_execution_time' ),
);
foreach( $php_ini_gets as $php_ini_get ) {
$show[] = $php_ini_get[0].'<br />This value is set to <strong>'.ini_get( $php_ini_get[1] ).'</strong>';
}
$res['required'] = $required;
$res['extensions'] = $extensions;
$res['recommended'] = $recommended;
$res['show'] = $show;
return $res;
}
/**
* get_php_setting
*/
function get_php_setting( $val ) {
$r = ( ini_get( $val ) == '1' ? 1 : 0 );
return $r ? 'ON' : 'OFF';
}
?>
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