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fall back to alternative mysql extension if selected fails and switch to error.php if this fails too

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- moved loading of extension out of libraries/dbi/* into libraries/database_interface.lib.php
This commit is contained in:
Sebastian Mendel
2005-11-17 12:15:59 +00:00
parent 507ea546b8
commit f2e910543d
4 changed files with 85 additions and 48 deletions
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66
libraries/database_interface.lib.php
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@@ -12,10 +12,71 @@ define('PMA_DBI_QUERY_UNBUFFERED', 2); // Do not read whole query
define('PMA_DBI_GETVAR_SESSION', 1);
define('PMA_DBI_GETVAR_GLOBAL', 2);
/**
* Loads the mysql extensions if it is not loaded yet
*
* @param string $extension mysql extension to load
*/
function PMA_DBI_checkAndLoadMysqlExtension( $extension = 'mysql' ) {
if ( ! function_exists( $extension . '_connect' ) ) {
PMA_dl( $extension );
// check whether mysql is available
if ( ! function_exists( $extension . '_connect' ) ) {
return false;
}
}
return true;
}
/**
* check for requested extension
*/
if ( ! PMA_DBI_checkAndLoadMysqlExtension( $GLOBALS['cfg']['Server']['extension'] ) ) {
// if it fails try alternative extension ...
// and display an error ...
// TODO 2.7.1: add different messages for alternativ extension
// and complete fail (no alternativ extension too)
$GLOBALS['PMA_errors'][] =
sprintf( PMA_sanitize( $GLOBALS['strCantLoad'] ),
$GLOBALS['cfg']['Server']['extension'] )
.' - <a href="./Documentation.html#faqmysql" target="documentation">'
.$GLOBALS['strDocu'] . '</a>';
if ( $GLOBALS['cfg']['Server']['extension'] === 'mysql' ) {
$alternativ_extension = 'mysqli';
} else {
$alternativ_extension = 'mysql';
}
if ( ! PMA_DBI_checkAndLoadMysqlExtension( $alternativ_extension ) ) {
// if alternativ fails too ...
header( 'Location: error.php'
. '?lang=' . urlencode( $available_languages[$lang][2] )
. '&char=' . urlencode( $charset )
. '&dir=' . urlencode( $text_dir )
. '&type=' . urlencode( $strError )
. '&error=' . urlencode(
sprintf( $GLOBALS['strCantLoad'],
$GLOBALS['cfg']['Server']['extension'] )
.' - [a@./Documentation.html#faqmysql@documentation]'
.$GLOBALS['strDocu'] . '[/a]' )
. '&' . SID
);
exit();
}
$GLOBALS['cfg']['Server']['extension'] = $alternativ_extension;
unset( $alternativ_extension );
}
/**
* Including The DBI Plugin
*/
require_once('./libraries/dbi/' . $cfg['Server']['extension'] . '.dbi.lib.php');
require_once('./libraries/dbi/' . $GLOBALS['cfg']['Server']['extension'] . '.dbi.lib.php');
/**
* Common Functions
@@ -747,4 +808,5 @@ function PMA_DBI_get_default_engine() {
return PMA_DBI_fetch_value( 'SHOW VARIABLES LIKE \'table_type\';', 0, 1 );
}
}
?>
?>