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<?php
/* $Id: Config.class.php,v 1.21.2.18.2.8 2006/08/22 17:00:00 lem9 Exp $ */
// vim: expandtab sw=4 ts=4 sts=4:
class PMA_Config
{
/**
* @var string default config source
*/
var $default_source = './libraries/config.default.php';
/**
* @var array configuration settings
*/
var $settings = array();
/**
* @var string config source
*/
var $source = '';
/**
* @var int source modification time
*/
var $source_mtime = 0;
var $default_source_mtime = 0;
/**
* @var boolean
*/
var $error_config_file = false;
/**
* @var boolean
*/
var $error_config_default_file = false;
/**
* @var boolean
*/
var $error_pma_uri = false;
/**
* @var array
*/
var $default_server = array();
/**
* @var boolean wether init is done or mot
* set this to false to force some initial checks
* like checking for required functions
*/
var $done = false;
/**
* constructor
*
* @param string source to read config from
*/
function __construct($source = null)
{
$this->settings = array();
// functions need to refresh in case of config file changed goes in
// PMA_Config::load()
$this->load($source);
// other settings, independant from config file, comes in
$this->checkSystem();
$this->checkIsHttps();
}
/**
* sets system and application settings
*/
function checkSystem()
{
$this->set('PMA_VERSION', '2.8.2.4');
/**
* @deprecated
*/
$this->set('PMA_THEME_VERSION', 2);
/**
* @deprecated
*/
$this->set('PMA_THEME_GENERATION', 2);
$this->checkPhpVersion();
$this->checkWebServerOs();
$this->checkWebServer();
$this->checkGd2();
$this->checkClient();
$this->checkUpload();
$this->checkUploadSize();
$this->checkOutputCompression();
}
/**
* wether to use gzip output compression or not
*/
function checkOutputCompression()
{
// If zlib output compression is set in the php configuration file, no
// output buffering should be run
if ( @ini_get('zlib.output_compression') ) {
$this->set('OBGzip', false);
}
// disable output-buffering (if set to 'auto') for IE6, else enable it.
if ( strtolower($this->get('OBGzip')) == 'auto' ) {
if ( $this->get('PMA_USR_BROWSER_AGENT') == 'IE'
&& $this->get('PMA_USR_BROWSER_VER') >= 6
&& $this->get('PMA_USR_BROWSER_VER') < 7 ) {
$this->set('OBGzip', false);
} else {
$this->set('OBGzip', true);
}
}
}
/**
* Determines platform (OS), browser and version of the user
* Based on a phpBuilder article:
* @see http://www.phpbuilder.net/columns/tim20000821.php
*/
function checkClient()
{
if (PMA_getenv('HTTP_USER_AGENT')) {
$HTTP_USER_AGENT = PMA_getenv('HTTP_USER_AGENT');
} elseif (!isset($HTTP_USER_AGENT)) {
$HTTP_USER_AGENT = '';
}
// 1. Platform
if (strstr($HTTP_USER_AGENT, 'Win')) {
$this->set('PMA_USR_OS', 'Win');
} elseif (strstr($HTTP_USER_AGENT, 'Mac')) {
$this->set('PMA_USR_OS', 'Mac');
} elseif (strstr($HTTP_USER_AGENT, 'Linux')) {
$this->set('PMA_USR_OS', 'Linux');
} elseif (strstr($HTTP_USER_AGENT, 'Unix')) {
$this->set('PMA_USR_OS', 'Unix');
} elseif (strstr($HTTP_USER_AGENT, 'OS/2')) {
$this->set('PMA_USR_OS', 'OS/2');
} else {
$this->set('PMA_USR_OS', 'Other');
}
// 2. browser and version
// (must check everything else before Mozilla)
if (preg_match('@Opera(/| )([0-9].[0-9]{1,2})@', $HTTP_USER_AGENT, $log_version)) {
$this->set('PMA_USR_BROWSER_VER', $log_version[2]);
$this->set('PMA_USR_BROWSER_AGENT', 'OPERA');
} elseif (preg_match('@MSIE ([0-9].[0-9]{1,2})@', $HTTP_USER_AGENT, $log_version)) {
$this->set('PMA_USR_BROWSER_VER', $log_version[1]);
$this->set('PMA_USR_BROWSER_AGENT', 'IE');
} elseif (preg_match('@OmniWeb/([0-9].[0-9]{1,2})@', $HTTP_USER_AGENT, $log_version)) {
$this->set('PMA_USR_BROWSER_VER', $log_version[1]);
$this->set('PMA_USR_BROWSER_AGENT', 'OMNIWEB');
//} elseif (ereg('Konqueror/([0-9].[0-9]{1,2})', $HTTP_USER_AGENT, $log_version)) {
// Konqueror 2.2.2 says Konqueror/2.2.2
// Konqueror 3.0.3 says Konqueror/3
} elseif (preg_match('@(Konqueror/)(.*)(;)@', $HTTP_USER_AGENT, $log_version)) {
$this->set('PMA_USR_BROWSER_VER', $log_version[2]);
$this->set('PMA_USR_BROWSER_AGENT', 'KONQUEROR');
} elseif (preg_match('@Mozilla/([0-9].[0-9]{1,2})@', $HTTP_USER_AGENT, $log_version)
&& preg_match('@Safari/([0-9]*)@', $HTTP_USER_AGENT, $log_version2)) {
$this->set('PMA_USR_BROWSER_VER', $log_version[1] . '.' . $log_version2[1]);
$this->set('PMA_USR_BROWSER_AGENT', 'SAFARI');
} elseif (preg_match('@Mozilla/([0-9].[0-9]{1,2})@', $HTTP_USER_AGENT, $log_version)) {
$this->set('PMA_USR_BROWSER_VER', $log_version[1]);
$this->set('PMA_USR_BROWSER_AGENT', 'MOZILLA');
} else {
$this->set('PMA_USR_BROWSER_VER', 0);
$this->set('PMA_USR_BROWSER_AGENT', 'OTHER');
}
}
/**
* Whether GD2 is present
*/
function checkGd2()
{
if ( $this->get('GD2Available') == 'yes' ) {
$this->set('PMA_IS_GD2', 1);
} elseif ( $this->get('GD2Available') == 'no' ) {
$this->set('PMA_IS_GD2', 0);
} else {
if (!@extension_loaded('gd')) {
PMA_dl('gd');
}
if (!@function_exists('imagecreatetruecolor')) {
$this->set('PMA_IS_GD2', 0);
} else {
if (@function_exists('gd_info')) {
$gd_nfo = gd_info();
if (strstr($gd_nfo["GD Version"], '2.')) {
$this->set('PMA_IS_GD2', 1);
} else {
$this->set('PMA_IS_GD2', 0);
}
} else {
/* We must do hard way... */
ob_start();
phpinfo(INFO_MODULES); /* Only modules */
$a = strip_tags(ob_get_contents());
ob_end_clean();
/* Get GD version string from phpinfo output */
if (preg_match('@GD Version[[:space:]]*\(.*\)@', $a, $v)) {
if (strstr($v, '2.')) {
$this->set('PMA_IS_GD2', 1);
} else {
$this->set('PMA_IS_GD2', 0);
}
} else {
$this->set('PMA_IS_GD2', 0);
}
}
}
}
}
/**
* Whether the Web server php is running on is IIS
*/
function checkWebServer()
{
if (PMA_getenv('SERVER_SOFTWARE')
// some versions return Microsoft-IIS, some Microsoft/IIS
// we could use a preg_match() but it's slower
&& stristr(PMA_getenv('SERVER_SOFTWARE'), 'Microsoft')
&& stristr(PMA_getenv('SERVER_SOFTWARE'), 'IIS')) {
$this->set('PMA_IS_IIS', 1);
} else {
$this->set('PMA_IS_IIS', 0);
}
}
/**
* Whether the os php is running on is windows or not
*/
function checkWebServerOs()
{
// Default to Unix or Equiv
$this->set('PMA_IS_WINDOWS', 0);
// If PHP_OS is defined then continue
if (defined('PHP_OS')) {
if (stristr(PHP_OS, 'win') ) {
// Is it some version of Windows
$this->set('PMA_IS_WINDOWS', 1);
} elseif (stristr(PHP_OS, 'OS/2')) {
// Is it OS/2 (No file permissions like Windows)
$this->set('PMA_IS_WINDOWS', 1);
}
}
}
/**
* detects PHP version
*/
function checkPhpVersion()
{
$match = array();
if ( ! preg_match('@([0-9]{1,2}).([0-9]{1,2}).([0-9]{1,2})@',
phpversion(), $match) ) {
$result = preg_match('@([0-9]{1,2}).([0-9]{1,2})@',
phpversion(), $match);
}
if ( isset( $match ) && ! empty( $match[1] ) ) {
if ( ! isset( $match[2] ) ) {
$match[2] = 0;
}
if ( ! isset( $match[3] ) ) {
$match[3] = 0;
}
$this->set('PMA_PHP_INT_VERSION',
(int) sprintf('%d%02d%02d', $match[1], $match[2], $match[3]));
} else {
$this->set('PMA_PHP_INT_VERSION', 0);
}
$this->set('PMA_PHP_STR_VERSION', phpversion());
}
/**
* re-init object after loadiong from session file
* checks config file for changes and relaods if neccessary
*/
function __wakeup()
{
if (! $this->checkConfigSource()
|| $this->source_mtime !== filemtime($this->getSource())
|| $this->default_source_mtime !== filemtime($this->default_source)
|| $this->error_config_file
|| $this->error_config_default_file) {
$this->settings = array();
$this->load();
$this->checkSystem();
}
// check for https needs to be done everytime,
// as https and http uses same session so this info can not be stored
// in session
$this->checkIsHttps();
$this->checkCollationConnection();
}
/**
* loads default values from default source
*
* @uses file_exists()
* @uses $this->default_source
* @uses $this->error_config_default_file
* @uses $this->settings
* @return boolean success
*/
function loadDefaults()
{
$cfg = array();
if ( ! file_exists($this->default_source) ) {
$this->error_config_default_file = true;
return false;
}
include $this->default_source;
$this->default_source_mtime = filemtime($this->default_source);
$this->default_server = $cfg['Servers'][1];
unset( $cfg['Servers'] );
$this->settings = PMA_array_merge_recursive($this->settings, $cfg);
$this->error_config_default_file = false;
return true;
}
/**
* loads configuration from $source, usally the config file
* should be called on object creation and from __wakeup if config file
* has changed
*
* @param string $source config file
*/
function load($source = null)
{
$this->loadDefaults();
if ( null !== $source ) {
$this->setSource($source);
}
if ( ! $this->checkConfigSource() ) {
return false;
}
$cfg = array();
/**
* Parses the configuration file
*/
$old_error_reporting = error_reporting(0);
if ( function_exists('file_get_contents') ) {
$eval_result =
eval( '?>' . file_get_contents($this->getSource()) );
} else {
$eval_result =
eval( '?>' . implode("\n", file($this->getSource())) );
}
error_reporting($old_error_reporting);
if ( $eval_result === false ) {
$this->error_config_file = true;
} else {
$this->error_config_file = false;
$this->source_mtime = filemtime($this->getSource());
}
/**
* @TODO check validity of $_COOKIE['pma_collation_connection']
*/
if ( ! empty( $_COOKIE['pma_collation_connection'] ) ) {
$this->set('collation_connection',
strip_tags($_COOKIE['pma_collation_connection']) );
} else {
$this->set('collation_connection',
$this->get('DefaultConnectionCollation') );
}
$this->checkCollationConnection();
//$this->checkPmaAbsoluteUri();
$this->settings = PMA_array_merge_recursive($this->settings, $cfg);
return true;
}
/**
* set source
* @param string $source
*/
function setSource($source)
{
$this->source = trim($source);
}
/**
* checks if the config folder still exists and terminates app if true
*/
function checkConfigFolder()
{
// Refuse to work while there still might be some world writable dir:
if (is_dir('./config')) {
die('Remove "./config" directory before using phpMyAdmin!');
}
}
/**
* check config source
*
* @return boolean wether source is valid or not
*/
function checkConfigSource()
{
if (! $this->getSource()) {
// no configuration file set at all
return false;
}
if ( ! file_exists($this->getSource()) ) {
// do not trigger error here
// https://sf.net/tracker/?func=detail&aid=1370269&group_id=23067&atid=377408
/*
trigger_error(
'phpMyAdmin-ERROR: unkown configuration source: ' . $source,
E_USER_WARNING);
*/
$this->source_mtime = 0;
return false;
}
if ( ! is_readable($this->getSource()) ) {
$this->source_mtime = 0;
die('Existing configuration file (' . $this->getSource() . ') is not readable.');
}
// Check for permissions (on platforms that support it):
$perms = @fileperms($this->getSource());
if (!($perms === false) && ($perms & 2)) {
// This check is normally done after loading configuration
$this->checkWebServerOs();
if ($this->get('PMA_IS_WINDOWS') == 0) {
$this->source_mtime = 0;
die('Wrong permissions on configuration file, should not be world writable!');
}
}
return true;
}
/**
* returns specific config setting
* @param string $setting
* @return mixed value
*/
function get($setting)
{
if ( isset( $this->settings[$setting] ) ) {
return $this->settings[$setting];
}
return null;
}
/**
* sets configuration variable
*
* @uses $this->settings
* @param string $setting configuration option
* @param string $value new value for configuration option
*/
function set($setting, $value)
{
$this->settings[$setting] = $value;
}
/**
* returns source for current config
* @return string config source
*/
function getSource()
{
return $this->source;
}
/**
* old PHP 4 style constructor
*
* @deprecated
*/
function PMA_Config($source = null)
{
$this->__construct($source);
}
/**
* $cfg['PmaAbsoluteUri'] is a required directive else cookies won't be
* set properly and, depending on browsers, inserting or updating a
* record might fail
*/
function checkPmaAbsoluteUri()
{
// Setup a default value to let the people and lazy syadmins work anyway,
// they'll get an error if the autodetect code doesn't work
$pma_absolute_uri = $this->get('PmaAbsoluteUri');
if ( strlen($pma_absolute_uri) < 1 ) {
$url = array();
// At first we try to parse REQUEST_URI, it might contain full URI
if (PMA_getenv('REQUEST_URI')) {
$url = parse_url(PMA_getenv('REQUEST_URI'));
}
// If we don't have scheme, we didn't have full URL so we need to
// dig deeper
if ( empty( $url['scheme'] ) ) {
// Scheme
if (PMA_getenv('HTTP_SCHEME')) {
$url['scheme'] = PMA_getenv('HTTP_SCHEME');
} else {
$url['scheme'] =
PMA_getenv('HTTPS') && strtolower(PMA_getenv('HTTPS')) != 'off'
? 'https'
: 'http';
}
// Host and port
if (PMA_getenv('HTTP_HOST')) {
if (strpos(PMA_getenv('HTTP_HOST'), ':') !== false) {
list( $url['host'], $url['port'] ) =
explode(':', PMA_getenv('HTTP_HOST'));
} else {
$url['host'] = PMA_getenv('HTTP_HOST');
}
} elseif (PMA_getenv('SERVER_NAME')) {
$url['host'] = PMA_getenv('SERVER_NAME');
} else {
$this->error_pma_uri = true;
return false;
}
// If we didn't set port yet...
if (empty($url['port']) && PMA_getenv('SERVER_PORT')) {
$url['port'] = PMA_getenv('SERVER_PORT');
}
// And finally the path could be already set from REQUEST_URI
if ( empty( $url['path'] ) ) {
if (PMA_getenv('PATH_INFO')) {
$path = parse_url(PMA_getenv('PATH_INFO'));
} else {
// PHP_SELF in CGI often points to cgi executable, so use it
// as last choice
$path = parse_url(PMA_getenv('PHP_SELF'));
}
$url['path'] = $path['path'];
}
}
// Make url from parts we have
$pma_absolute_uri = $url['scheme'] . '://';
// Was there user information?
if (!empty($url['user'])) {
$pma_absolute_uri .= $url['user'];
if (!empty($url['pass'])) {
$pma_absolute_uri .= ':' . $url['pass'];
}
$pma_absolute_uri .= '@';
}
// Add hostname
$pma_absolute_uri .= $url['host'];
// Add port, if it not the default one
if ( ! empty( $url['port'] )
&& ( ( $url['scheme'] == 'http' && $url['port'] != 80 )
|| ( $url['scheme'] == 'https' && $url['port'] != 443 ) ) ) {
$pma_absolute_uri .= ':' . $url['port'];
}
// And finally path, without script name, the 'a' is there not to
// strip our directory, when path is only /pmadir/ without filename.
// Backslashes returned by Windows have to be changed.
// Only replace backslashes by forward slashes if on Windows,
// as the backslash could be valid on a non-Windows system.
if ($this->get('PMA_IS_WINDOWS') == 1) {
$path = str_replace("\\", "/", dirname($url['path'] . 'a'));
} else {
$path = dirname($url['path'] . 'a');
}
// To work correctly within transformations overview:
if (defined('PMA_PATH_TO_BASEDIR') && PMA_PATH_TO_BASEDIR == '../../') {
if ($this->get('PMA_IS_WINDOWS') == 1) {
$path = str_replace("\\", "/", dirname(dirname($path)));
} else {
$path = dirname(dirname($path));
}
}
// in vhost situations, there could be already an ending slash
if (substr($path, -1) != '/') {
$path .= '/';
}
$pma_absolute_uri .= $path;
// We used to display a warning if PmaAbsoluteUri wasn't set, but now
// the autodetect code works well enough that we don't display the
// warning at all. The user can still set PmaAbsoluteUri manually.
// See
// http://sf.net/tracker/?func=detail&aid=1257134&group_id=23067&atid=377411
} else {
// The URI is specified, however users do often specify this
// wrongly, so we try to fix this.
// Adds a trailing slash et the end of the phpMyAdmin uri if it
// does not exist.
if (substr($pma_absolute_uri, -1) != '/') {
$pma_absolute_uri .= '/';
}
// If URI doesn't start with http:// or https://, we will add
// this.
if ( substr($pma_absolute_uri, 0, 7) != 'http://'
&& substr($pma_absolute_uri, 0, 8) != 'https://' ) {
$pma_absolute_uri =
(PMA_getenv('HTTPS') && strtolower(PMA_getenv('HTTPS')) != 'off'
? 'https'
: 'http')
. ':' . (substr($pma_absolute_uri, 0, 2) == '//' ? '' : '//')
. $pma_absolute_uri;
}
}
$this->set('PmaAbsoluteUri', $pma_absolute_uri);
}
/**
* check selected collation_connection
* @TODO check validity of $_REQUEST['collation_connection']
*/
function checkCollationConnection()
{
// (could be improved by executing it after the MySQL connection only if
// PMA_MYSQL_INT_VERSION >= 40100 )
if ( ! empty( $_REQUEST['collation_connection'] ) ) {
$this->set('collation_connection',
strip_tags($_REQUEST['collation_connection']) );
}
}
/**
* checks if upload is enabled
*
*/
function checkUpload()
{
$this->set('enable_upload', true);
if ( strtolower(@ini_get('file_uploads')) == 'off'
|| @ini_get('file_uploads') == 0 ) {
$this->set('enable_upload', false);
}
}
/**
* Maximum upload size as limited by PHP
* Used with permission from Moodle (http://moodle.org) by Martin Dougiamas
*
* this section generates $max_upload_size in bytes
*/
function checkUploadSize()
{
if ( ! $filesize = ini_get('upload_max_filesize') ) {
$filesize = "5M";
}
if ( $postsize = ini_get('post_max_size') ) {
$this->set('max_upload_size',
min(get_real_size($filesize), get_real_size($postsize)) );
} else {
$this->set('max_upload_size', get_real_size($filesize));
}
}
/**
* check for https
*/
function checkIsHttps()
{
$this->set('is_https', PMA_Config::isHttps());
}
/**
* @static
*/
function isHttps()
{
$is_https = false;
$url = array();
// At first we try to parse REQUEST_URI, it might contain full URI
if (PMA_getenv('REQUEST_URI')) {
$url = parse_url(PMA_getenv('REQUEST_URI'));
}
// If we don't have scheme, we didn't have full URL so we need to
// dig deeper
if ( empty( $url['scheme'] ) ) {
// Scheme
if (PMA_getenv('HTTP_SCHEME')) {
$url['scheme'] = PMA_getenv('HTTP_SCHEME');
} else {
$url['scheme'] =
PMA_getenv('HTTPS') && strtolower(PMA_getenv('HTTPS')) != 'off'
? 'https'
: 'http';
}
}
if ( isset( $url['scheme'] )
&& $url['scheme'] == 'https' ) {
$is_https = true;
} else {
$is_https = false;
}
return $is_https;
}
/**
* detect correct cookie path
*/
function checkCookiePath()
{
$this->set('cookie_path', PMA_Config::getCookiePath());
}
/**
* @static
*/
function getCookiePath()
{
static $cookie_path = null;
if ( null !== $cookie_path ) {
return $cookie_path;
}
$url = '';
if (PMA_getenv('REQUEST_URI')) {
$url = PMA_getenv('REQUEST_URI');
}
// If we don't have path
if (empty($url)) {
if (PMA_getenv('PATH_INFO')) {
$url = PMA_getenv('PATH_INFO');
} elseif (PMA_getenv('PHP_SELF')) {
// PHP_SELF in CGI often points to cgi executable, so use it
// as last choice
$url = PMA_getenv('PHP_SELF');
} elseif (PMA_getenv('SCRIPT_NAME')) {
$url = PMA_getenv('PHP_SELF');
}
}
$url = parse_url($url);
$cookie_path = substr($url['path'], 0, strrpos($url['path'], '/')) . '/';
return $cookie_path;
}
/**
* enables backward compatibility
*/
function enableBc()
{
$GLOBALS['cfg'] =& $this->settings;
$GLOBALS['default_server'] =& $this->default_server;
$GLOBALS['collation_connection'] = $this->get('collation_connection');
$GLOBALS['is_upload'] = $this->get('enable_upload');
$GLOBALS['max_upload_size'] = $this->get('max_upload_size');
$GLOBALS['cookie_path'] = $this->get('cookie_path');
$GLOBALS['is_https'] = $this->get('is_https');
$defines = array(
'PMA_VERSION',
'PMA_THEME_VERSION',
'PMA_THEME_GENERATION',
'PMA_PHP_STR_VERSION',
'PMA_PHP_INT_VERSION',
'PMA_IS_WINDOWS',
'PMA_IS_IIS',
'PMA_IS_GD2',
'PMA_USR_OS',
'PMA_USR_BROWSER_VER',
'PMA_USR_BROWSER_AGENT',
);
foreach ( $defines as $define ) {
if ( ! defined($define) ) {
define($define, $this->get($define));
}
}
}
/**
* @todo finish
*/
function save() {}
}
?>
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