985bdd11ab
On some systems iconv is installed, but is missing encoding definitions, what leads to runtime errors when trying to use it. By testing this we start using it only if it's properly working. Fixes #11787 Signed-off-by: Michal Čihař <michal@cihar.com>
126 lines
3.5 KiB
PHP
126 lines
3.5 KiB
PHP
<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* Charset conversion functions.
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*
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* @package PhpMyAdmin
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*/
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if (! defined('PHPMYADMIN')) {
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exit;
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}
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define('PMA_CHARSET_NONE', 0);
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define('PMA_CHARSET_ICONV', 1);
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define('PMA_CHARSET_RECODE', 2);
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define('PMA_CHARSET_ICONV_AIX', 3);
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define('PMA_CHARSET_MB', 4);
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if (! isset($GLOBALS['cfg']['RecodingEngine'])) {
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$GLOBALS['cfg']['RecodingEngine'] = '';
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}
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// Finally detect which function we will use:
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if ($GLOBALS['cfg']['RecodingEngine'] == 'iconv') {
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if (@function_exists('iconv')) {
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$PMA_recoding_engine = PMA_getIconvRecodingEngine();
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} else {
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$PMA_recoding_engine = PMA_CHARSET_NONE;
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PMA_warnMissingExtension('iconv');
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}
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} elseif ($GLOBALS['cfg']['RecodingEngine'] == 'recode') {
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if (@function_exists('recode_string')) {
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$PMA_recoding_engine = PMA_CHARSET_RECODE;
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} else {
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$PMA_recoding_engine = PMA_CHARSET_NONE;
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PMA_warnMissingExtension('recode');
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}
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} elseif ($GLOBALS['cfg']['RecodingEngine'] == 'mb') {
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if (@function_exists('mb_convert_encoding')) {
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$PMA_recoding_engine = PMA_CHARSET_MB;
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} else {
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$PMA_recoding_engine = PMA_CHARSET_NONE;
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PMA_warnMissingExtension('mbstring');
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}
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} elseif ($GLOBALS['cfg']['RecodingEngine'] == 'auto') {
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/*
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* We also need to verify iconv works, see
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* https://github.com/phpmyadmin/phpmyadmin/issues/11787/
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* and
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* https://bugs.php.net/bug.php?id=44096
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*/
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if (@function_exists('iconv') && @iconv_strlen('', 'cp1250') !== false) {
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$PMA_recoding_engine = PMA_getIconvRecodingEngine();
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} elseif (@function_exists('recode_string')) {
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$PMA_recoding_engine = PMA_CHARSET_RECODE;
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} elseif (@function_exists('mb_convert_encoding')) {
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$PMA_recoding_engine = PMA_CHARSET_MB;
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} else {
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$PMA_recoding_engine = PMA_CHARSET_NONE;
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}
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} else {
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$PMA_recoding_engine = PMA_CHARSET_NONE;
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}
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/* Load AIX iconv wrapper if needed */
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if ($PMA_recoding_engine == PMA_CHARSET_ICONV_AIX) {
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include_once './libraries/iconv_wrapper.lib.php';
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}
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/**
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* Determines the correct recoding engine to use
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*
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* @return int $PMA_recoding_engine
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*
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* @access public
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*
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*/
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function PMA_getIconvRecodingEngine()
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{
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if ((@stristr(PHP_OS, 'AIX'))
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&& (@strcasecmp(ICONV_IMPL, 'unknown') == 0)
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&& (@strcasecmp(ICONV_VERSION, 'unknown') == 0)
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) {
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return PMA_CHARSET_ICONV_AIX;
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} else {
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return PMA_CHARSET_ICONV;
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}
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}
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/**
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* Converts encoding of text according to parameters with detected
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* conversion function.
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*
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* @param string $src_charset source charset
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* @param string $dest_charset target charset
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* @param string $what what to convert
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*
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* @return string converted text
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*
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* @access public
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*
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*/
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function PMA_convertString($src_charset, $dest_charset, $what)
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{
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if ($src_charset == $dest_charset) {
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return $what;
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}
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switch ($GLOBALS['PMA_recoding_engine']) {
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case PMA_CHARSET_RECODE:
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return recode_string($src_charset . '..' . $dest_charset, $what);
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case PMA_CHARSET_ICONV:
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return iconv(
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$src_charset, $dest_charset . $GLOBALS['cfg']['IconvExtraParams'], $what
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);
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case PMA_CHARSET_ICONV_AIX:
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return PMA_convertAIXIconv(
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$src_charset, $dest_charset . $GLOBALS['cfg']['IconvExtraParams'], $what
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);
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case PMA_CHARSET_MB:
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return mb_convert_encoding(
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$what, $dest_charset, $src_charset
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);
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default:
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return $what;
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}
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} // end of the "PMA_convertString()" function
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