X-Git-Url: https://git.mxchange.org/?p=mailer.git;a=blobdiff_plain;f=inc%2Finstall-functions.php;h=3dddbb89a4b9b38769d8554f93cff7b46fdd7c58;hp=c1375178da3afbb35d2dbbd5d13662b0674d1246;hb=596c8ab32594401ca84abfbfe35513ddfff31bec;hpb=db0c6702086eea2c44d0aae1702dc2e77a0afc4e

diff --git a/inc/install-functions.php b/inc/install-functions.php
index c1375178da..3dddbb89a4 100644
--- a/inc/install-functions.php
+++ b/inc/install-functions.php
@@ -16,8 +16,8 @@
  * $Author::                                                          $ *
  * -------------------------------------------------------------------- *
  * Copyright (c) 2003 - 2009 by Roland Haeder                           *
- * Copyright (c) 2009 - 2011 by Mailer Developer Team                   *
- * For more information visit: http://www.mxchange.org                  *
+ * Copyright (c) 2009 - 2012 by Mailer Developer Team                   *
+ * For more information visit: http://mxchange.org                      *
  *                                                                      *
  * This program is free software; you can redistribute it and/or modify *
  * it under the terms of the GNU General Public License as published by *
@@ -36,49 +36,80 @@
  ************************************************************************/
 
 // Some security stuff...
-if (!defined('__SECURITY')) {
+if ((!defined('__SECURITY')) || (!isInstallationPhase())) {
 	die();
 } // END - if
 
+// Init installer
+function initInstaller () {
+	// Initialize installer group array
+	$GLOBALS['installer_groups'] = array(
+		// base_data
+		'base_path'       => 'base_data',
+		'base_url'        => 'base_data',
+		'main_title'      => 'base_data',
+		'slogan'          => 'base_data',
+		'webmaster'       => 'base_data',
+		// database_config
+		'mysql_host'      => 'database_config',
+		'mysql_dbase'     => 'database_config',
+		'mysql_prefix'    => 'database_config',
+		'mysql_type'      => 'database_config',
+		'mysql_login'     => 'database_config',
+		'mysql_password1' => 'database_config',
+		'mysql_password2' => 'database_config',
+		// smtp_config
+		'smtp_host'       => 'smtp_config',
+		'smtp_user'       => 'smtp_config',
+		'smtp_password1'  => 'smtp_config',
+		'smtp_password2'  => 'smtp_config',
+		// other_config
+		'output_mode'     => 'other_config',
+		'warn_no_pass'    => 'other_config',
+		'write_footer'    => 'other_config',
+		'enable_backlink' => 'other_config',
+	);
+}
+
 // Write the local config-local.php file from "template"
-function doInstallWriteLocalConfig () {
+function doInstallWriteLocalConfigurationFile ($path) {
 	// Copy the config template and verify it
-	copyFileVerified(postRequestParameter('spath') . 'inc/config-local.php.dist', getPath() . getCachePath() . 'config-local.php', 0644);
+	copyFileVerified(postRequestElement('spath') . 'inc/config-local.php.dist', postRequestElement('spath') . getCachePath() . 'config-local.php', 0644);
 
 	// Ok, all done. So we can write the config data to the php files
-	if (postRequestParameter('spath') != getPath()) changeDataInInclude(getCachePath() . 'config-local.php', 'SERVER-PATH', "setConfigEntry('PATH', '", "');", postRequestParameter('spath'), 0);
-	if (postRequestParameter('burl')  != getUrl())  changeDataInInclude(getCachePath() . 'config-local.php', 'HOST-URL', "setConfigEntry('URL', '", "');", postRequestParameter('burl'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'MAIN-TITLE', "setConfigEntry('MAIN_TITLE', '", "');", postRequestParameter('title'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'SLOGAN', "setConfigEntry('SLOGAN', '", "');", postRequestParameter('slogan'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'WEBMASTER', "setConfigEntry('WEBMASTER', '", "');", postRequestParameter('email'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'NULLPASS-WARNING', "setConfigEntry('WARN_NO_PASS', '", "');", postRequestParameter('warn_no_pass'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'WRITE-FOOTER', "setConfigEntry('WRITE_FOOTER', '", "');", postRequestParameter('wfooter'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'BACKLINK', "setConfigEntry('ENABLE_BACKLINK', '", "');", postRequestParameter('blink'), 0);
-	// @TODO DEACTIVATED: changeDataInInclude(getCachePath() . 'config-local.php', 'OUTPUT-MODE', "setConfigEntry('OUTPUT_MODE', '", "');", postRequestParameter('omode'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'MYSQL-HOST', "	'host'     => '", "',", postRequestParameter('mysql','host'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'MYSQL-DBASE', "	'dbase'    => '", "',", postRequestParameter('mysql','dbase'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'MYSQL-LOGIN', "	'login'    => '", "',", postRequestParameter('mysql','login'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'MYSQL-PASSWORD', "	'password' => '", "',", postRequestParameter('mysql','pass1'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'MYSQL-PREFIX', "setConfigEntry('_MYSQL_PREFIX', '", "');", postRequestParameter('mysql','prefix'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'TABLE-TYPE', "setConfigEntry('_TABLE_TYPE', '", "');", postRequestParameter('mysql','type'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'SMTP-HOSTNAME', "setConfigEntry('SMTP_HOSTNAME', '", "');", postRequestParameter('smtp_host'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'SMTP-USER', "setConfigEntry('SMTP_USER', '", "');", postRequestParameter('smtp_user'), 0);
-	changeDataInInclude(getCachePath() . 'config-local.php', 'SMTP-PASSWORD', "setConfigEntry('SMTP_PASSWORD', '", "');", postRequestParameter('smtp_pass1'), 0);
-
-	// Generate a long site key
-	$siteKey = generatePassword(50);
-
-	// And write it
-	changeDataInInclude(getCachePath() . 'config-local.php', 'SITE-KEY', "setConfigEntry('SITE_KEY', '", "');", $siteKey, 0);
+	// Do only write these if they differ from auto-detected values
+	if (postRequestElement('spath') != getPath()) changeDataInLocalConfigurationFile('SERVER-PATH', "setConfigEntry('PATH', '", "');", postRequestElement('spath'), 0);
+	if (postRequestElement('burl')  != getUrl())  changeDataInLocalConfigurationFile('HOST-URL', "setConfigEntry('URL', '", "');", postRequestElement('burl'), 0);
+
+	// Write more data
+	changeDataInLocalConfigurationFile('MAIN-TITLE', "setConfigEntry('MAIN_TITLE', '", "');", postRequestElement('title'), 0);
+	changeDataInLocalConfigurationFile('SLOGAN', "setConfigEntry('SLOGAN', '", "');", postRequestElement('slogan'), 0);
+	changeDataInLocalConfigurationFile('WEBMASTER', "setConfigEntry('WEBMASTER', '", "');", postRequestElement('email'), 0);
+	changeDataInLocalConfigurationFile('NULLPASS-WARNING', "setConfigEntry('WARN_NO_PASS', '", "');", postRequestElement('warn_no_pass'), 0);
+	changeDataInLocalConfigurationFile('WRITE-FOOTER', "setConfigEntry('WRITE_FOOTER', '", "');", postRequestElement('wfooter'), 0);
+	changeDataInLocalConfigurationFile('BACKLINK', "setConfigEntry('ENABLE_BACKLINK', '", "');", postRequestElement('blink'), 0);
+	// @TODO DEACTIVATED: changeDataInLocalConfigurationFile('OUTPUT-MODE', "setConfigEntry('OUTPUT_MODE', '", "');", postRequestElement('omode'), 0);
+	changeDataInLocalConfigurationFile('MYSQL-HOST', "	'host'     => '", "',", postRequestElement('mysql','host'), 0);
+	changeDataInLocalConfigurationFile('MYSQL-DBASE', "	'dbase'    => '", "',", postRequestElement('mysql','dbase'), 0);
+	changeDataInLocalConfigurationFile('MYSQL-LOGIN', "	'login'    => '", "',", postRequestElement('mysql','login'), 0);
+	changeDataInLocalConfigurationFile('MYSQL-PASSWORD', "	'password' => '", "',", postRequestElement('mysql','pass1'), 0);
+	changeDataInLocalConfigurationFile('MYSQL-PREFIX', "setConfigEntry('_MYSQL_PREFIX', '", "');", postRequestElement('mysql','prefix'), 0);
+	changeDataInLocalConfigurationFile('TABLE-TYPE', "setConfigEntry('_TABLE_TYPE', '", "');", postRequestElement('mysql','type'), 0);
+	changeDataInLocalConfigurationFile('SMTP-HOSTNAME', "setConfigEntry('SMTP_HOSTNAME', '", "');", postRequestElement('smtp_host'), 0);
+	changeDataInLocalConfigurationFile('SMTP-USER', "setConfigEntry('SMTP_USER', '", "');", postRequestElement('smtp_user'), 0);
+	changeDataInLocalConfigurationFile('SMTP-PASSWORD', "setConfigEntry('SMTP_PASSWORD', '", "');", postRequestElement('smtp_pass1'), 0);
+
+	// Generate a long site-key and write it
+	changeDataInLocalConfigurationFile('SITE-KEY', "setConfigEntry('SITE_KEY', '", "');", generatePassword(50), 0);
 
 	// Script is now installed
-	changeDataInInclude(getCachePath() . 'config-local.php', 'INSTALLED', "setConfigEntry('MXCHANGE_INSTALLED', '", "');", 'Y', 0);
+	changeDataInLocalConfigurationFile('INSTALLED', "setConfigEntry('MXCHANGE_INSTALLED', '", "');", 'Y', 0);
 }
 
 // Adds a given template with content to install output stream
 function addTemplateToInstallContent ($template, $content = array()) {
 	// Load the template
-	$out = loadTemplate($template, true, $content);
+	$out = loadTemplate($template, TRUE, $content);
 
 	// Add it to output
 	addToInstallContent($out);
@@ -104,7 +135,7 @@ function getInstallerContent () {
 		$content = $GLOBALS['install_content'];
 	} else {
 		// Nothing found, this needs fixing
-		$content = displayMessage('{--INSTALLER_CONTENT_404--}', true);
+		$content = displayMessage('{--INSTALLER_CONTENT_404--}', TRUE);
 	}
 
 	// Return content
@@ -117,12 +148,474 @@ function readSqlDump ($FQFN) {
 	$content = readFromFile($FQFN);
 
 	// Remove some unwanted chars
-	$content = str_replace("\r", '', $content);
-	$content = str_replace("\n\n", "\n", $content);
+	$content = str_replace(chr(13), '', $content);
+	$content = str_replace("\n\n", chr(10), $content);
 
 	// Return the content
 	return $content;
 }
 
+// Generates the installer menu by simply loading another template
+function generateInstallerMenu () {
+	// Load installer menu template
+	$OUT = loadTemplate('install_menu', TRUE);
+
+	// Return loaded content
+	return $OUT;
+}
+
+// Generate the install footer navigation by simply loading another template
+function generateInstallerFooterNavigation () {
+	// Load installer menu template
+	$OUT = loadTemplate('install_footer', TRUE);
+
+	// Return loaded content
+	return $OUT;
+}
+
+// Generate an option list for database types for given default value
+function generateInstallerDatabaseTypeOptions () {
+	return generateOptions(
+		'/ARRAY/',
+		array('MyISAM', 'InnoDB'),
+		array('{--INSTALLER_TABLE_TYPE_MYISAM--}', '{--INSTALLER_TABLE_TYPE_INNODB--}'),
+		getSession('mysql_type')
+	);
+}
+
+// Generate an option list for output mode types for given default value
+function generateInstallerOutputModeOptions ($defaultValue) {
+	return generateOptions(
+		'/ARRAY/',
+		array('render', 'direct'),
+		array('{--INSTALLER_MODE_RENDER--}', '{--INSTALLER_MODE_DIRECT--}'),
+		$defaultValue
+	);
+}
+
+// Checks whether we have an AJAX-enabled installer which defaults to red pill
+function isAjaxInstaller () {
+	// Get the session data and compare it against 'ajax'
+	$isAjaxInstaller = (getSession('installer') == 'ajax');
+
+	// Return it
+	return $isAjaxInstaller;
+}
+
+// Checks whether we have an plain installer which defaults to red pill
+function isPlainInstaller () {
+	// Get the session data and compare it against 'plain'
+	$isPlainInstaller = (getSession('installer') == 'plain');
+
+	// Return it
+	return $isPlainInstaller;
+}
+
+// Checks given key/value pair if it is valid by a call-back
+function isInstallerDataValid (&$saveStatus, $key, $value) {
+	//* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'key=' . $key . ',value=' . $value . ' - ENTERED!');
+	// Generate call-back function based on given key
+	$callbackName = 'isInstaller' . capitalizeUnderscoreString($key) . 'Valid';
+
+	// Is the function there?
+	if (!function_exists($callbackName)) {
+		// Not found, which is not bad, but it means this data is always valid
+		//* NOISY-DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'Call-back function ' . $callbackName . ' not found. saveStatus[status]=' . $saveStatus['status'] . ', key=' . $key . ', value=' . $value);
+
+		// All fine (CAREFULL!)
+		return TRUE;
+	} // END - if
+
+	// Then call it back
+	$isValid = (bool) call_user_func($callbackName, $value);
+
+	// Is it not valid?
+	//* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'key=' . $key . ',value=' . $value . ',isValid=' . intval($isValid));
+	if ($isValid === FALSE) {
+		// Then add it to saveStatus
+		array_push($saveStatus['failed_fields'], $key);
+	} // END - if
+
+	// Return status
+	//* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'key=' . $key . ',value=' . $value . ',isValid=' . intval($isValid) . ' - EXIT!');
+	return $isValid;
+}
+
+// Post-check on installer data
+function doInstallerPostCheck ($currentTab, &$saveStatus) {
+	// Debug message
+	//* NOISY-DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'currentTab=' . $currentTab . ',saveStatus[status]=' . $saveStatus['status'] . ' - ENTERED!');
+
+	// Create the call-back function on 'tab'
+	$callbackName = 'isInstallerPost' . capitalizeUnderscoreString($currentTab) . 'Valid';
+
+	// Is the function there?
+	if (!function_exists($callbackName)) {
+		// Not found, which is not bad, but it means the post-check won't be run
+		//* NOISY-DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'Call-back function ' . $callbackName . ' not found. saveStatus[status]=' . $saveStatus['status'] . ', currentTab=' . $currentTab);
+
+		// Abort here
+		return;
+	} // END - if
+
+	// Init 'tab-specific error message'
+	$GLOBALS['installer_post_error'][$currentTab]    = '';
+	$GLOBALS['installer_failed_fields'][$currentTab] = array();
+
+	// Debug message
+	//* NOISY-DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'Calling function ' . $callbackName . ',currentTab=' . $currentTab . ',saveStatus[status]=' . $saveStatus['status']);
+
+	// Then call it back
+	$isValid = (bool) call_user_func($callbackName, $currentTab);
+
+	// Is it not valid?
+	if (($isValid === FALSE) || (count($GLOBALS['installer_failed_fields'][$currentTab]) > 0)) {
+		// Then change status and message
+		$saveStatus['status']  = 'failed';
+		$saveStatus['message'] = '{%message,INSTALLER_POST_CHECK_' . strtoupper($currentTab) . '_FAILED=' . $GLOBALS['installer_post_error'][$currentTab] . '%}';
+
+		// Is there failed fields?
+		if (count($GLOBALS['installer_failed_fields'][$currentTab]) > 0) {
+			// Then merge both
+			$saveStatus['failed_fields'] = merge_array($saveStatus['failed_fields'], $GLOBALS['installer_failed_fields'][$currentTab]);
+		} // END - if
+	} // END - if
+
+	// Debug message
+	//* NOISY-DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'currentTab=' . $currentTab . ',saveStatus[status]=' . $saveStatus['status'] . ' - EXIT!');
+}
+
+// Determines an installer group by given key
+function determineInstallerGroupByKey ($key) {
+	// Try to look it up
+	if (!isset($GLOBALS['installer_groups'][$key])) {
+		// Log missing entry
+		logDebugMessage(__FUNCTION__, __LINE__, 'Cannot determine installer group, returning dummy group. key=' . $key);
+
+		// Return dummy group
+		return 'dummy';
+	} // END - if
+
+	// Return it
+	return $GLOBALS['installer_groups'][$key];
+}
+
+// Adds given key/value pair to an overview group
+function addKeyValueToInstallerOverviewGroup ($key, $value) {
+	// First determine the group by given key
+	$group = determineInstallerGroupByKey($key);
+
+	// Depending on the group, add it for later usage (to render the overview page)
+	$GLOBALS['installer_overview'][$group][$key] = $value;
+}
+
+//-----------------------------------------------------------------------------
+//                   Call-back functions to check validity
+//-----------------------------------------------------------------------------
+
+// ----------------- Base data -----------------
+
+// Call-back function to check validity of 'base_path'
+function isInstallerBasePathValid ($value) {
+	//* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'value=' . $value . ' - ENTERED!');
+	// Is it a directory and if some typical files could be found
+	$isValid = (
+		// Is it a directory?
+		(isDirectory($value))
+	&&
+		// Is there a trailing slash?
+		(substr($value, -1, 1) == '/')
+	&&
+		// Is mysql-manager.php there?
+		(isFileReadable($value . 'inc/mysql-manager.php'))
+	&&
+		// What about gen_sql_patches.php?
+		(isFileReadable($value . 'inc/gen_sql_patches.php'))
+	);
+
+	// Return it
+	//* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'value=' . $value . ',isValid=' . intval($isValid) . ' - EXIT');
+	return $isValid;
+}
+
+// Call-back function to check validity of 'base_url'
+function isInstallerBaseUrlValid ($value) {
+	//* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'value=' . $value . ' - ENTERED!');
+	// Is it same as URL
+	$isValid = (
+		// Same as URL?
+		($value == getUrl())
+	|| (
+		// Starts with http:// or https:// ?
+		((substr($value, 0, 7) == 'http://') || (substr($value, 0, 8) == 'https://'))
+	&&
+		// Has no trailing slash?
+		(substr($value, -1, 1) != '/')
+	&&
+		// And total length is at least 6+8=14 chars long? (https://foo.ba)
+		(strlen($value) >= 14)
+	&&
+		// Is the URL valid?
+		(isUrlValid($value))
+	));
+
+	// Return it
+	//* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'value=' . $value . ',isValid=' . intval($isValid) . ' - EXIT');
+	return $isValid;
+}
+
+// Call-back function to check validity of 'webmaster'
+function isInstallerWebmasterValid ($value) {
+	//* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'value=' . $value . ' - ENTERED!');
+	// Is it a valid email address?
+	$isValid = (
+		// Is it a valid email address?
+		(isEmailValid($value))
+	||
+		// Or is there 'localhost/127.0.0.1' as hostname? Then don't check email address (e.g. you@localhost)
+		(in_array(detectServerName(), array('localhost', '127.0.0.1')))
+	);
+
+	// Return it
+	//* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'value=' . $value . ',isValid=' . intval($isValid) . ' - EXIT');
+	return $isValid;
+}
+
+// ----------------- Database configuration -----------------
+
+// Call-back function to check validity of 'mysql_host'
+function isInstallerMysqlHostValid ($value) {
+	// This value must match a hostname or IP address
+	$isValid = (
+		// Is localhost/127.0.0.1? (mostly the case)
+		(in_array($value, array('localhost', '127.0.0.1')))
+	||
+		// IP number match (this regex was taken from www.regexlib.com)
+		(preg_match('/((25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9]))/', $value))
+	||
+		// Host name match
+		(preg_match('/([a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?\.)+[a-zA-Z]{2,6}/', $value))
+	);
+
+	// Return it
+	return $isValid;
+}
+
+// Call-back function to check validity of 'mysql_type'
+function isInstallerMysqlTypeValid ($value) {
+	// This value must be 'MyISAM' or 'InnoDB'
+	$isValid = in_array($value, array('MyISAM', 'InnoDB'));
+
+	// Return it
+	return $isValid;
+}
+
+// ----------------- SMTP configuration -----------------
+
+// ----------------- Other configuration -----------------
+
+//-----------------------------------------------------------------------------
+//                 Call-back functions to post-check validity
+//-----------------------------------------------------------------------------
+
+// Call-back function to check if database configuration in POST is valid
+function isInstallerPostDatabaseConfigValid ($currentTab) {
+	// By default nothing is valid
+	$isValid       = FALSE;
+	$engineValid   = FALSE;
+	$missingTables = 0;
+
+	// Do both passwords match?
+	if ((!isPostRequestElementSet('mysql_password1')) && (isPostRequestElementSet('mysql_password2'))) {
+		// Password 1 not set
+		$GLOBALS['installer_post_error'][$currentTab] = '{--INSTALLER_POST_DATABASE_PASSWORD1_EMPTY--}';
+		array_push($GLOBALS['installer_failed_fields'][$currentTab], 'mysql_password1');
+		return FALSE;
+	} elseif ((isPostRequestElementSet('mysql_password1')) && (!isPostRequestElementSet('mysql_password2'))) {
+		// Password 2 not set
+		$GLOBALS['installer_post_error'][$currentTab] = '{--INSTALLER_POST_DATABASE_PASSWORD2_EMPTY--}';
+		array_push($GLOBALS['installer_failed_fields'][$currentTab], 'mysql_password2');
+		return FALSE;
+	} elseif (postRequestElement('mysql_password1') != postRequestElement('mysql_password2')) {
+		// Passwords mismatch
+		$GLOBALS['installer_post_error'][$currentTab] = '{--INSTALLER_POST_DATABASE_PASSWORDS_MISMATCH--}';
+		array_push($GLOBALS['installer_failed_fields'][$currentTab], 'mysql_password1', 'mysql_password2');
+		return FALSE;
+	} // END - if
+
+	// Restore PHP's own error handler
+	if (!restore_error_handler()) {
+		// This is fatal
+		reportBug(__FUNCTION__, __LINE__, 'Could not unregister error handler.');
+	} // END - if
+
+	// Try to connect to the database
+	$linkResource = SQL_CONNECT(postRequestElement('mysql_host'), postRequestElement('mysql_login'), postRequestElement('mysql_password1'), __FUNCTION__, __LINE__);
+
+	// Is the link up
+	if (!is_resource($linkResource)) {
+		// Restore own error handler again
+		set_error_handler('__errorHandler');
+
+		// Cannot connect to database
+		$GLOBALS['installer_post_error'][$currentTab] = '{--INSTALLER_POST_DATABASE_CONNECT_ERROR--}';
+		array_push($GLOBALS['installer_failed_fields'][$currentTab], 'mysql_login', 'mysql_password1', 'mysql_password2');
+		return FALSE;
+	} // END - if
+
+	// Then attempt to select the database
+	if (!SQL_SELECT_DB(postRequestElement('mysql_dbase'), __FUNCTION__, __LINE__)) {
+		// Restore own error handler again
+		set_error_handler('__errorHandler');
+
+		// Could not find database
+		$GLOBALS['installer_post_error'][$currentTab] = '{--INSTALLER_POST_DATABASE_SELECT_FAILED--}';
+		array_push($GLOBALS['installer_failed_fields'][$currentTab], 'mysql_dbase');
+		return FALSE;
+	} // END - if
+
+	// Set database name and prefix
+	setConfigEntry('__DB_NAME'    , postRequestElement('mysql_dbase'));
+	setConfigEntry('_MYSQL_PREFIX', postRequestElement('mysql_prefix'));
+
+	// Restore own error handler again
+	set_error_handler('__errorHandler');
+
+	// Get an array of all supported engines
+	$engines = getArrayFromSupportedSqlEngines();
+
+	// Is this an array?
+	if (!is_array($engines)) {
+		// Restore own error handler again
+		set_error_handler('__errorHandler');
+
+		// Something bad happened
+		$GLOBALS['installer_post_error'][$currentTab] = '{--INSTALLER_POST_DATABASE_ENGINES_SQL_ERROR--}';
+		array_push($GLOBALS['installer_failed_fields'][$currentTab], 'mysql_type');
+		return FALSE;
+	} elseif (count($engines) == 0) {
+		// Restore own error handler again
+		set_error_handler('__errorHandler');
+
+		// No engine is active
+		$GLOBALS['installer_post_error'][$currentTab] = '{--INSTALLER_POST_DATABASE_NO_ENGINES_ACTIVE--}';
+		array_push($GLOBALS['installer_failed_fields'][$currentTab], 'mysql_type');
+		return FALSE;
+	}
+
+	// Then check all, if the requested is working
+	foreach ($engines as $engineArray) {
+		// By default the selected engine is not valid
+		$engineValid = FALSE;
+
+		// Is the engine there?
+		if (strtolower($engineArray['Engine']) == strtolower(postRequestElement('mysql_type'))) {
+			// Okay, engine is found
+			$engineValid = TRUE;
+			break;
+		} // END - if
+	} // END - foreach
+
+	// So, is the engine found?
+	if ($engineValid === FALSE) {
+		// Restore own error handler again
+		set_error_handler('__errorHandler');
+
+		// Requested engine is not active
+		$GLOBALS['installer_post_error'][$currentTab] = '{--INSTALLER_POST_DATABASE_ENGINE_UNSUPPORTED--}';
+		array_push($GLOBALS['installer_failed_fields'][$currentTab], 'mysql_type');
+		return FALSE;
+	} // END - if
+
+	// Init some known tables
+	$tables = array(
+		// Admins
+		'admins'      => TRUE,
+		// Admin menu
+		'admin_menu'  => TRUE,
+		// Categories
+		'cats'        => TRUE,
+		// Configuration
+		'config'      => TRUE,
+		// Extensions
+		'extensions'  => TRUE,
+		// Guest menu
+		'guest_menu'  => TRUE,
+		// Max receive
+		'max_receive' => TRUE,
+		// Member menu
+		'member_menu' => TRUE,
+		// Module registry
+		'mod_reg'     => TRUE,
+		// Payments
+		'payments'    => TRUE,
+		// Sending pool
+		'pool'        => TRUE,
+		// Referral banner
+		'refbanner'   => TRUE,
+		// Referral levels
+		'refdepths'   => TRUE,
+		// Referral system
+		'refsystem'   => TRUE,
+		// Task system
+		'task_system' => TRUE,
+	);
+
+	// So check if all tables are not there
+	foreach ($tables as $tableName => $isFound) {
+		// Check it out
+		$tables[$tableName] = ifSqlTableExists($tableName);
+
+		// Is it (hopefully not) there?
+		if ($tables[$tableName] === FALSE) {
+			// This does not exist
+			$missingTables++;
+		} // END - if
+	} // END - foreach
+
+	// Determine final status (simply compare both counts
+	$isValid = (count($tables) == $missingTables);
+
+	// Disconnect here, we don't need idle database connections laying around
+	SQL_CLOSE(__FUNCTION__, __LINE__);
+
+	// Restore own error handler again
+	set_error_handler('__errorHandler');
+
+	// If the status is true, disconnect the database
+	if ($isValid === FALSE) {
+		// Still something bad happened (e.g. tables found)
+		$GLOBALS['installer_post_error'][$currentTab] = '{--INSTALLER_POST_DATABASE_IN_USE--}';
+		array_push($GLOBALS['installer_failed_fields'][$currentTab], 'mysql_dbase');
+	} // END - if
+
+	// Return status
+	return $isValid;
+}
+
+// Call-back function to check if enable_backlink is Y/N
+function isInstallerEnableBacklinkValid ($currentTab) {
+	// Check and return it
+	return in_array($currentTab, array('Y', 'N'));
+}
+
+// Call-back function to check if warn_no_pass is Y/N
+function isInstallerWarnNoPassValid ($currentTab) {
+	// Check and return it
+	return in_array($currentTab, array('Y', 'N'));
+}
+
+// Call-back function to check if write_footer is Y/N
+function isInstallerWriteFooterValid ($currentTab) {
+	// Check and return it
+	return in_array($currentTab, array('Y', 'N'));
+}
+
+// Call-back function to check if output_mode is Y/N
+function isInstallerOutputModeValid ($currentTab) {
+	// Check and return it
+	return in_array($currentTab, array('render', 'direct'));
+}
+
 // [EOF]
 ?>