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made code more reliable

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This commit is contained in:
Sebastian Mendel
2005-11-24 17:26:26 +00:00
parent 81cd3d35dc
commit ea94a378d4
2 changed files with 142 additions and 100 deletions
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1
ChangeLog
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@@ -36,6 +36,7 @@ $Source$
- dont add variables already in cookie (reduces html output up to 30%)
- can pass all url variables as array to function
* main.php, index.php: moved setting of cookies into index.php
* libraries/select_lang.lib.php: made code more reliable
2005-11-23 Sebastian Mendel <cybot_tm@users.sourceforge.net>
* *REVERTED* libraries/display_select_lang.lib.php: correct lang definition

241
libraries/select_lang.lib.php
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@@ -2,17 +2,113 @@
/* $Id$ */
// vim: expandtab sw=4 ts=4 sts=4:
/**
* phpMyAdmin Language Loading File
*/
/**
* Define the path to the translations directory and get some variables
* from system arrays if 'register_globals' is set to 'off'
* trys to find the language to use
*
* @uses $GLOBALS['cfg']['lang']
* @uses $GLOBALS['cfg']['DefaultLang']
* @uses $_REQUEST['lang']
* @uses $_COOKIE['pma_lang']
* @uses $_SERVER['HTTP_ACCEPT_LANGUAGE']
* @uses $_SERVER['HTTP_USER_AGENT']
* @uses PMA_langSet()
* @uses PMA_langDetect()
* @uses explode()
* @return bool success if valid lang is found, otherwise false
*/
$lang_path = './lang/';
function PMA_langCheck() {
// check forced language
if ( PMA_langSet($GLOBALS['cfg']['Lang']) ) {
return true;
}
// check previous set language
if ( PMA_langSet($_REQUEST['lang']) ) {
return true;
}
if ( PMA_langSet( $_COOKIE['pma_lang'] ) ) {
return true;
}
// try to findout user's language by checking its HTTP_ACCEPT_LANGUAGE variable
if ( ! empty($_SERVER['HTTP_ACCEPT_LANGUAGE']) ) {
foreach ( explode( ',', $_SERVER['HTTP_ACCEPT_LANGUAGE'] ) as $lang ) {
if ( PMA_langDetect( $lang, 1 ) ) {
return true;
}
}
}
// try to findout user's language by checking its HTTP_USER_AGENT variable
if ( PMA_langDetect($_SERVER['HTTP_USER_AGENT'], 2) ) {
return true;
}
// Didn't catch any valid lang : we use the default settings
if ( PMA_langSet($GLOBALS['cfg']['DefaultLang']) ) {
return true;
}
return false;
}
/**
* checks given lang and sets it if valid
* returns true on success, otherwise flase
*
* @global $available_languages to check given lang
* @global $lang to set it
* @param string $lang langauge to set
* @return bool success
*/
function PMA_langSet( $lang ) {
if ( !empty( $lang )
&& !empty( $GLOBALS['available_languages'][$lang] ) ) {
$GLOBALS['lang'] = $lang;
return true;
} else {
return false;
}
}
/**
* Analyzes some PHP environment variables to find the most probable language
* that should be used
*
* @param string string to analyze
* @param integer type of the PHP environment variable which value is $str
*
* @return bool true on success, otherwise false
*
* @global $available_languages
*
* @access private
*/
function PMA_langDetect( $str, $envType ) {
if ( empty( $str ) ) return false;
if ( empty( $GLOBALS['available_languages'] ) ) return false;
foreach ($GLOBALS['available_languages'] as $lang => $value) {
// $envType = 1 for the 'HTTP_ACCEPT_LANGUAGE' environment variable,
// 2 for the 'HTTP_USER_AGENT' one
$expr = $value[0];
if (strpos($expr, '[-_]') === FALSE) {
$expr = str_replace('|', '([-_][[:alpha:]]{2,3})?|', $expr);
}
if (($envType == 1 && eregi('^(' . $expr . ')(;q=[0-9]\\.[0-9])?$', $str))
|| ($envType == 2 && eregi('(\(|\[|;[[:space:]])(' . $expr . ')(;|\]|\))', $str))) {
if ( PMA_langSet( $lang ) ) {
return true;
}
}
}
return false;
} // end of the 'PMA_langDetect()' function
/**
* All the supported languages have to be listed in the array below.
@@ -181,66 +277,6 @@ if (!empty($GLOBALS['cfg']['FilterLanguages'])) {
unset( $key, $val, $new_lang );
}
/**
* Analyzes some PHP environment variables to find the most probable language
* that should be used
*
* @param string string to analyze
* @param integer type of the PHP environment variable which value is $str
*
* @global array the list of available translations
* @global string the retained translation keyword
*
* @access private
*/
function PMA_langDetect($str = '', $envType = '')
{
global $available_languages;
global $lang;
foreach ($available_languages AS $key => $value) {
// $envType = 1 for the 'HTTP_ACCEPT_LANGUAGE' environment variable,
// 2 for the 'HTTP_USER_AGENT' one
$expr = $value[0];
if (strpos($expr, '[-_]') === FALSE) {
$expr = str_replace('|', '([-_][[:alpha:]]{2,3})?|', $expr);
}
if (($envType == 1 && eregi('^(' . $expr . ')(;q=[0-9]\\.[0-9])?$', $str))
|| ($envType == 2 && eregi('(\(|\[|;[[:space:]])(' . $expr . ')(;|\]|\))', $str))) {
$lang = $key;
break;
}
}
} // end of the 'PMA_langDetect()' function
if (!isset($lang)) {
if (isset($_GET) && !empty($_GET['lang'])) {
$lang = $_GET['lang'];
}
else if (isset($_POST) && !empty($_POST['lang'])) {
$lang = $_POST['lang'];
}
else if (isset($_COOKIE) && !empty($_COOKIE['pma_lang'])) {
$lang = $_COOKIE['pma_lang'];
}
}
/**
* Do the work!
*/
// compatibility with config.inc.php <= v1.80
if (!isset($cfg['Lang']) && isset($cfgLang)) {
$cfg['Lang'] = $cfgLang;
unset($cfgLang);
}
if (!isset($cfg['DefaultLang']) && isset($cfgDefaultLang)) {
$cfg['DefaultLang'] = $cfgDefaultLang;
unset($cfgLang);
}
// MySQL charsets map
$mysql_charset_map = array(
'big5' => 'big5',
@@ -268,48 +304,53 @@ $mysql_charset_map = array(
'windows-1257' => 'cp1257',
);
// Lang forced
if (!empty($cfg['Lang'])) {
$lang = $cfg['Lang'];
}
/**
* Do the work!
*/
// If '$lang' is defined, ensure this is a valid translation
if (!empty($lang) && empty($available_languages[$lang])) {
$lang = '';
}
// Language is not defined yet :
// 1. try to findout user's language by checking its HTTP_ACCEPT_LANGUAGE
// variable
if (empty($lang) && !empty($HTTP_ACCEPT_LANGUAGE)) {
$accepted = explode(',', $HTTP_ACCEPT_LANGUAGE);
$acceptedCnt = count($accepted);
for ($i = 0; $i < $acceptedCnt && empty($lang); $i++) {
PMA_langDetect($accepted[$i], 1);
}
}
// 2. try to findout user's language by checking its HTTP_USER_AGENT variable
if (empty($lang) && !empty($HTTP_USER_AGENT)) {
PMA_langDetect($HTTP_USER_AGENT, 2);
}
// 3. Didn't catch any valid lang : we use the default settings
if (empty($lang)) {
$lang = $cfg['DefaultLang'];
}
// 4. Checks whether charset recoding should be allowed or not
// Checks whether charset recoding should be allowed or not
$allow_recoding = FALSE; // Default fallback value
if (!isset($convcharset) || empty($convcharset)) {
if ( empty($convcharset) ) {
if (isset($_COOKIE['pma_charset'])) {
$convcharset = $_COOKIE['pma_charset'];
} else {
$convcharset = $cfg['DefaultCharset'];
$convcharset = $GLOBALS['cfg']['DefaultCharset'];
}
}
// 5. Defines the associated filename and load the translation
$lang_file = $lang_path . $available_languages[$lang][1] . '.inc.php';
require_once( $lang_file );
unset( $lang_file, $lang_path );
if ( ! PMA_langCheck() ) {
// language detection failed
$GLOBALS['lang'] = '';
}
/**
* Define the path to the translations directory
*/
$lang_path = './lang/';
// Defines the associated filename and load the translation
$lang_file = './' . $lang_path . $available_languages[$GLOBALS['lang']][1] . '.inc.php';
if ( file_exists( $lang_file ) ) {
require_once( $lang_file );
} else {
// language file not found
// fallback language
if ( $line = __LINE__ && ! PMA_langSet( $selectlang = 'en-iso-8859-1' ) ) {
// if even hard coded lang fails
trigger_error( 'ERROR: check hard coded language in ' . __FILE__ . ' on line #' . $line . ', unknown ISO-code', E_USER_WARNING );
header( 'Location: error.php?file=' . urlencode( __FILE__ ) . '&line=' . urlencode( __LINE__ ) . '&error=' . urlencode( 'invalid language ISO code: ' . $lang_file ) );
exit;
}
$lang_file = './' . $lang_path . $available_languages[$GLOBALS['lang']][1] . '.inc.php';
if ( ! file_exists( $lang_file ) ) {
// if even hard coded lang fails to load
trigger_error( 'ERROR: check hard coded language in ' . __FILE__ . ' on line #' . $line . ', file not found', E_USER_WARNING );
header( 'Location: error.php?file=' . urlencode( __FILE__ ) . '&line=' . urlencode( __LINE__ ) . '&error=' . urlencode( 'could not find language file: ' . $lang_file ) );
exit;
}
require_once( $lang_file );
$GLOBALS['PMA_errors'][] = $strLanguageFileNotFound;
}
unset( $lang_file, $lang_path, $strLanguageFileNotFound );
?>