<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2004-2018 The Cacti Group                                 |
 |                                                                         |
 | 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 the Free Software Foundation; either version 2          |
 | of the License, or (at your option) any later version.                  |
 |                                                                         |
 | This program is distributed in the hope that it will be useful,         |
 | but WITHOUT ANY WARRANTY; without even the implied warranty of          |
 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           |
 | GNU General Public License for more details.                            |
 +-------------------------------------------------------------------------+
 | Cacti: The Complete RRDtool-based Graphing Solution                     |
 +-------------------------------------------------------------------------+
 | This code is designed, written, and maintained by the Cacti Group. See  |
 | about.php and/or the AUTHORS file for specific developer information.   |
 +-------------------------------------------------------------------------+
 | http://www.cacti.net/                                                   |
 +-------------------------------------------------------------------------+
*/
error_reporting(E_ALL);

define('IN_CACTI_INSTALL', 1);

include_once('../include/global.php');
include_once('../lib/api_data_source.php');
include_once('../lib/api_device.php');
include_once('../lib/utility.php');
include_once('../lib/import.php');
include_once('./functions.php');

set_default_action();

if (get_request_var('action') == 'testdb') {
	test_database_connection();
	exit;
}

/* allow the upgrade script to run for as long as it needs to */
ini_set('max_execution_time', '0');

$cacti_versions = array_keys($cacti_version_codes);

$old_cacti_version = get_cacti_version();

/* do a version check */
if ($old_cacti_version == CACTI_VERSION) {
	print '<p style="font-family: Verdana, Arial; font-size: 16px; font-weight: bold; color: red;">' . __('Error') . '</p>
		<p style="font-family: Verdana, Arial; font-size: 12px;">'
		. __('This installation is already up-to-date. Click <a href="%s">here</a> to use Cacti.', '../index.php') . '</p>';
	exit;
} elseif (preg_match('/^0\.6/', $old_cacti_version)) {
	print '<p style="font-family: Verdana, Arial; font-size: 16px; font-weight: bold; color: red;">' . __('Error') . '</p>
		<p style="font-family: Verdana, Arial; font-size: 12px;">'
		. __('You are attempting to install Cacti %s onto a 0.6.x database. To continue, you must create a new database, import "cacti.sql" into it, and update "include/config.php" to point to the new database.', CACTI_VERSION) . '</p>';
	exit;
} elseif (empty($old_cacti_version)) {
	print '<p style="font-family: Verdana, Arial; font-size: 16px; font-weight: bold; color: red;">' . __('Error') . '</p>
		<p style="font-family: Verdana, Arial; font-size: 12px;">'
		. __("You have created a new database, but have not yet imported the 'cacti.sql' file. At the command line, execute the following to continue:</p><p><pre>mysql -u %s -p %s < cacti.sql</pre></p><p>This error may also be generated if the cacti database user does not have correct permissions on the Cacti database. Please ensure that the Cacti database user has the ability to SELECT, INSERT, DELETE, UPDATE, CREATE, ALTER, DROP, INDEX on the Cacti database.", $database_username, $database_default) . '</p>';

	print '<p>' . __("In Cacti %s, you must also import MySQL TimeZone information into MySQL and grant the Cacti user SELECT access to the mysql.time_zone_name table", CACTI_VERSION) . '</p>';

	if ($config['cacti_server_os'] == 'unix') {
		print '<p>' . __("On Linux/UNIX, do the following:") . '</p><p><pre>' . __("mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root -p mysql") . "\n";
	} else {
		print '<p>' . __("On Windows, you must follow the instructions here <a target='_blank' href='https://dev.mysql.com/downloads/timezones.html'>Time zone description table</a>.  Once that is complete, you can issue the following command to grant the Cacti user access to the tables:") . '</p><p><pre>';
	}
	print __("GRANT SELECT ON mysql.time_zone_name to '%s'@'localhost' IDENTIFIED BY '%s'", $database_username, $database_password) . '</pre></p>';

	exit;
}

/* default value for this variable */
if (isset_request_var('install_type')) {
	$_SESSION['sess_install_type'] = get_filter_request_var('install_type');
} elseif (isset($_SESSION['sess_install_type'])) {
	set_request_var('install_type', $_SESSION['sess_install_type']);
} else {
	set_request_var('install_type', '0');
}

/* defaults for the install type dropdown */
$default_install_button = __('Begin');

if ($old_cacti_version == 'new_install') {
	$default_install_type = '1';
} else {
	$default_install_type = '3';
}

/* pre-processing that needs to be done for each step */
if (isset_request_var('step') && get_filter_request_var('step') > 0) {
	$step = get_filter_request_var('step');
	$default_install_button = __('Next');

	switch($step) {
	case '1':
		/* license&welcome - send to checkdependencies */
		$previous_step = 0;
		$step++;

		break;
	case '2':
		$previous_step = 1;

		/* checkdependencies - send to install/upgrade */
		$step++;
		if (get_filter_request_var('install_type') == '3') {
			if (cacti_version_compare($old_cacti_version, CACTI_VERSION, '<=')) {
				$default_install_button = __('Upgrade');
			} else {
				$default_install_button = __('Downgrade');
			}
		}
		break;
	case '3':
		$previous_step = 2;

		if (get_filter_request_var('install_type') == '1') {
			/* install - New Primary Server */
			$step = 4;
		} elseif (get_filter_request_var('install_type') == '2') {
			/* install - New Remote Poller */
			$step = 4;
		} elseif (get_filter_request_var('install_type') == '3') {
			if (cacti_version_compare($old_cacti_version, CACTI_VERSION, '<=')) {
				$default_install_button = __('Upgrade');
			} else {
				$default_install_button = __('Downgrade');
			}
			/* install/upgrade - if user chooses "Upgrade" send to upgrade */
			$step = 8;
		}

		break;
	case '4':
		$previous_step = 3;

		/* settingscheck - send to settings-install */
		$step = 5;

		break;
	case '5':
		$previous_step = 4;

		if (get_request_var('install_type') != 2) {
			/* settings-install - send to template-import */
			$step = 6;
		} else {
			/* remote pollers are done, no template import */
			$step = 7;
		}

		break;
	case '6':
		$previous_step = 5;

		/* template-import - send to installfinal */
		$step = 7;
		break;
	case '7':
		break;
	case '8':
		$previous_step = 8;
		/* upgrade - if user upgrades send to settings check */
		if (version_compare($old_cacti_version, '0.8.5a', '<=')) {
			/* upgrade - if user runs old version send to upgrade-oldversion */
			$step = 9;
		} else {
			$step = 7;
		}
		break;
	case '9':
		$previous_step = 8;
		/* upgrade-oldversion - if user upgrades from old version send to settingscheck */
		$step = 4;
		break;
	}
} else {
	$previous_step = 0;
	$step = 1;
}

/* installfinal - Install templates, change cacti version and send to login page */
if ($step == '7') {
	include_once('../lib/data_query.php');
	include_once('../lib/utility.php');
	include_once('../lib/import.php');
	include_once('../lib/api_automation.php');

	/* look for templates that have been checked for install */
	if (get_request_var('install_type') == 1) {
		$install = Array();
		foreach ($_POST as $post => $v) {
			if (substr($post, 0, 4) == 'chk_' && is_numeric(substr($post, 4))) {
				$install[] = substr($post, 4);
			}
		}

		$path = $config['base_path'] . '/install/templates/';

		/* install templates */
		$templates = install_setup_get_templates(1);
		if (!empty($install)) {
			foreach ($install as $i) {
				import_package($path . $templates[$i]['filename'], 1, false);
			}
		}

		// Add the correct device type
		if ($config['cacti_server_os'] == 'win32') {
			$hash = '5b8300be607dce4f030b026a381b91cd';
			$version      = 2;
			$community    = 'public';
			$avail        = 'snmp';
			$ip           = 'localhost';
			$description  = "Local Windows Machine";
		} else {
			$hash = '2d3e47f416738c2d22c87c40218cc55e';
			$version      = 0;
			$community    = 'public';
			$avail        = 'none';
			$ip           = 'localhost';
			$description  = "Local Linux Machine";
		}

		$host_template_id = db_fetch_cell_prepared('SELECT id FROM host_template WHERE hash = ?', array($hash));

		// Add the host
		if (!empty($host_template_id)) {
			cacti_log('Device Template for First Cacti Device is ' . $host_template_id);

			$results = shell_exec(read_config_option('path_php_binary') . ' -q ' . $config['base_path'] . "/cli/add_device.php" .
				" --description=" . cacti_escapeshellarg($description) . " --ip=" . cacti_escapeshellarg($ip) . " --template=$host_template_id" .
				" --notes=" . cacti_escapeshellarg('Initial Cacti Device') . " --poller=1 --site=0 --avail=" . cacti_escapeshellarg($avail) .
				" --version=$version --community=" . cacti_escapeshellarg($community));

			$host_id = db_fetch_cell_prepared('SELECT id
				FROM host
				WHERE host_template_id = ?
				LIMIT 1',
				array($host_template_id));

			if (!empty($host_id)) {
				$templates = db_fetch_assoc_prepared('SELECT *
					FROM host_graph
					WHERE host_id = ?',
					array($host_id));

				if (sizeof($templates)) {
					foreach($templates as $template) {
						automation_execute_graph_template($host_id, $template['graph_template_id']);
					}
				}
			}
		} else {
			cacti_log('WARNING: Device Template for your Operating System Not Found.  You will need to import Device Templates or Cacti Packages to monitor your Cacti server.');
		}
	}

	if (get_request_var('install_type') == 2) {
		global $local_db_cnn_id;

		$success = remote_update_config_file();

		/* change cacti version */
		db_execute('DELETE FROM version', true, $local_db_cnn_id);
		db_execute("INSERT INTO version (cacti) VALUES ('" . CACTI_VERSION . "')", true, $local_db_cnn_id);

		/* make the poller and poller_output_boost InnoDB */
		db_execute('ALTER TABLE poller_output ENGINE=InnoDB');
		db_execute('ALTER TABLE poller_output_boost ENGINE=InnoDB');
	} else {
		/* pre-fill poller cache with initial data on a new install only */
		if ($old_cacti_version == 'new_install') {
			/* just in case we have hard drive graphs to deal with */
			$host_id = db_fetch_cell("SELECT id FROM host WHERE hostname='127.0.0.1'");

			if (!empty($host_id)) {
				run_data_query($host_id, 6);
			}

			/* it's always a good idea to re-populate the poller cache to make sure everything is refreshed and up-to-date */
			repopulate_poller_cache();

			/* fill up the snmpcache */
			snmpagent_cache_rebuilt();

			/* generate RSA key pair */
			rsa_check_keypair();
		}

		/* change cacti version */
		db_execute('DELETE FROM version');
		db_execute("INSERT INTO version (cacti) VALUES ('" . CACTI_VERSION . "')");
	}

	/* clear session */
	setcookie(session_name(),'',time() - 3600, $config['url_path']);

	kill_session_var('sess_config_array');
	kill_session_var('sess_host_cache_array');

	/* send to login page */
	header ('Location: ../index.php');
	exit;

/* upgrade */
} elseif (($step == '8') && (get_filter_request_var('install_type') == '3')) {
	// if the version is not found, die
	if (!array_key_exists($old_cacti_version, $cacti_version_codes)) {
		print "	<p style='font-family: Verdana, Arial; font-size: 16px; font-weight: bold; color: red;'>" . __('Error') . "</p>
			<p style='font-family: Verdana, Arial; font-size: 12px;'>"
			. __('Invalid Cacti version <strong>%1$s</strong>, cannot upgrade to <strong>%2$s</strong>', $old_cacti_version, CACTI_VERSION) . "</p>";
		exit;
	}

	// loop through versions from old version to the current, performing updates for each version in the chain
	foreach ($cacti_version_codes as $cacti_upgrade_version => $hash_code)  {
		// skip versions old than the database version
		if (cacti_version_compare($old_cacti_version, $cacti_upgrade_version, '>=')) {
			continue;
		}

		// construct version upgrade include path
		$upgrade_file = dirname(__FILE__) . '/upgrades/' . str_replace('.', '_', $cacti_upgrade_version) . '.php';
		$upgrade_function = 'upgrade_to_' . str_replace('.', '_', $cacti_upgrade_version);

		// check for upgrade version file, then include, check for function and execute
		if (file_exists($upgrade_file)) {
			include($upgrade_file);
			if (function_exists($upgrade_function)) {
				call_user_func($upgrade_function);
			}
		}
	}

	foreach ($plugins_integrated as $plugin) {
		if (api_plugin_is_enabled ($plugin)) {
			api_plugin_remove_hooks ($plugin);
			api_plugin_remove_realms ($plugin);
			db_execute("DELETE FROM plugin_config WHERE directory = '$plugin'");
		}
	}
}

if (isset_request_var('database_hostname')) {
	$_SESSION['database_type']     = 'mysql';
	$_SESSION['database_default']  = get_nfilter_request_var('database_default');
	$_SESSION['database_hostname'] = get_nfilter_request_var('database_hostname');
	$_SESSION['database_username'] = get_nfilter_request_var('database_username');
	$_SESSION['database_password'] = get_nfilter_request_var('database_password');
	$_SESSION['database_port']     = get_filter_request_var('database_port');
	$_SESSION['database_ssl']      = isset_request_var('database_ssl') ? true:false;
}

if (isset($rdatabase_default) &&
	isset($rdatabase_username) &&
	isset($rdatabase_hostname) &&
	isset($rdatabase_port)) {
	$remote_good = true;
} else {
	$remote_good = false;
}

if (is_writable($config['base_path'] . '/include/config.php')) {
	$good_write = true;
} else {
	$good_write = false;
}

$enabled = '1';

?>
<!DOCTYPE html>
<html>
<head>
	<?php print html_common_header(__('Cacti Server Installation/Upgrade'), 'modern');?>
	<style type='text/css'>
	input, select {
		font-size: 12px;
		padding: 0.4em;
	}
	</style>
</head>

<body style='overflow:auto;'>

<form method='post' action='index.php'>

<table style='margin-left:auto;margin-right:auto;width:80%;text-align:center;'>
	<tr><td height='40'></td></tr>
	<tr>
		<td style='width:100%;vertical-align:middle'>
			<table class='cactiTable' style='border:1px solid rgba(98,125,77,1)'>
				<tr class='cactiTableTitleRow'>
					<td class='textHeaderDark'><strong><?php print __('Cacti Installation Wizard'); ?></strong></td>
				</tr>
				<tr class='installArea'>
					<td class='installArea'>

					<?php
					/* license&welcome */
					if ($step == '1') {
						print '<h2>' . __('Cacti Version') . ' '. CACTI_VERSION . ' - ' . __('License Agreement') . '</h2>';

						print '<p>' . __('Thanks for taking the time to download and install Cacti, the complete graphing solution for your network. Before you can start making cool graphs, there are a few pieces of data that Cacti needs to know.') . '</p>';
						print '<p>' . __('Make sure you have read and followed the required steps needed to install Cacti before continuing. Install information can be found for <a href="%1$s">Unix</a> and <a href="%2$s">Win32</a>-based operating systems.', '../docs/html/install_unix.html', '../docs/html/install_windows.html') . '</p>';
						if ($default_install_type == '3') {
							print '<p class=\'note\'>' . __('Note: This process will guide you through the steps for upgrading from version \'%s\'. ',$old_cacti_version);
							print __('Also, if this is an upgrade, be sure to reading the <a href="%s">Upgrade</a> information file.', '../docs/html/upgrade.html') . '</p>';
						}
						print '<p>' . __('Cacti is licensed under the GNU General Public License, you must agree to its provisions before continuing:') . "</p>";
					?>
						<div class='code'>
						<p><?php print __('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 the Free Software Foundation; either version 2 of the License, or (at your option) any later version.');?></p>

						<p><?php print __('This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.');?></p>
						</div>
						<span><input type='checkbox' id='accept' name='accept'></span><span><label for='accept'><?php print __('Accept GPL License Agreement');?></label></span><br><br>
					<?php
					/* checkdependencies */
					} elseif ($step == '2') {
						$enabled = '1';

						print '<h2>' . __('Pre-installation Checks') .'</h2>';
						print '<h3>' . __('Location checks') . '</h3>';

						// Get request URI and break into parts
						$test_request_uri = $_SERVER['REQUEST_URI']; 
						$test_request_parts = parse_url($test_request_uri);
						$test_request_path = $test_request_parts['path'];
						$test_request_len = strlen($test_request_parts['path']);

						// Get current script name (filename only)
						$test_script_name = basename($_SERVER['SCRIPT_NAME']);
						$test_script_len = strlen($test_script_name);

						// Get end of the path of URI and see if it's our script
						$test_script_part = substr($test_request_path, $test_request_len - $test_script_len);
						$test_script_result = strcmp($test_script_part, $test_script_name);

						// Assume desired path is the URI
						$test_final_path = $test_request_parts['path'];

						// Script was found in path, so remove it
						if ($test_script_result === 0) {
							$test_final_path = substr($test_final_path,0,strlen($test_final_path) - $test_script_len);
						}

						// Add the install subfolder to defined path location
						// and check if it matches, if not there will likely be problems
						$test_config_path = $config['url_path'] . 'install/';
						$test_compare_result = strcmp($test_config_path,$test_final_path);

						/*
						 * Uncmment the following to debug the above change
						 *
						print '<p>Testing [' . $test_config_path . '] matches [' . $test_final_path .'] result = '.$test_compare_result.'('.gettype($test_compare_result).')</p>';

						print '<p>request_uri = ' . strlen($test_request_uri) . ' [' . $test_request_uri . ']</p>';
						print '<p>request_parts = ' . var_export($test_request_parts, true) . '</p>';
						print '<p>request_path = ' . strlen($test_request_path) . ' [' . $test_request_path . ']</p>';

						print '<p>script_name = ' . strlen($test_script_name) . ' [' . $test_script_name . ']</p>';
							print '<p>script_part = ' . strlen($test_script_part) . ' [' . $test_script_part . ']</p>';
						print '<p>script_result = ' . $test_script_result . '</p>';
						print '<p>final_path = ' . strlen($test_final_path) . ' [' . $test_final_path . ']</p>';
						 *
						 * The above code should probably be removed once tested.
						 */

						// The path was not what we expected so print an error
						if ($test_compare_result !== 0) {
							print '<p class="textError"><strong>' . __('ERROR:') . '</strong> ' .  __('Please update config.php with the correct relative URI location of Cacti (url_path).') . '</p>';
						} else {
							print '<p>' . __('Your Cacti configuration has the relative correct path (url_path) in config.php.') . '</p>';
						}

						print '<h3>' . __('MySQL TimeZone Support') .'</h3>';
						$mysql_timezone_access = db_fetch_assoc('SHOW COLUMNS FROM mysql.time_zone_name', false);
						if (sizeof($mysql_timezone_access)) {
							$timezone_populated = db_fetch_cell('SELECT COUNT(*) FROM mysql.time_zone_name');
							if (!$timezone_populated) {
								print '<p class="textError"><strong>' . __('ERROR:') . '</strong> ' .  __('Your MySQL TimeZone database is not populated.  Please populate this database before proceeding.') . '</p>';
								$enabled = '0';
							}
						} else {
							print '<p class="textError"><strong>' . __('ERROR:') . '</strong> ' .  __('Your Cacti database login account does not have access to the MySQL TimeZone database.  Please provide the Cacti database account "select" access to the "time_zone_name" table in the "mysql" database, and populate MySQL\'s TimeZone information before proceeding.') . '</p>';
							$enabled = '0';
						}

						if ($enabled == '1') {
							print '<p>' . __('Your Cacti database account has access to the MySQL TimeZone database and that database is populated with global TimeZone information.') . '</p>';
						}

						print '<h3>' . __('PHP Timezone Support') .'</h3>';

						if (ini_get('date.timezone') == '') {
							print '<p class="textError"><strong>' . __('ERROR:') . '</strong> ' .  __('Your Web Servers PHP Timezone settings have not been set.  Please edit php.ini and uncomment the \'date.timezone\' setting and set it to the Web Servers Timezone per the PHP installation instructions prior to installing Cacti.') . '</p>';
							$enabled = '0';
						} else {
							print '<p>' . __('Your Web Servers PHP is properly setup with a Timezone.') . '</p>';
						}

						print '<h3>' . __('Required PHP Module Support') .'</h3>';

						print '<p>' .  __('Cacti requires several PHP Modules to be installed to work properly. If any of these are not installed, you will be unable to continue the installation until corrected. In addition, for optimal system performance Cacti should be run with certain MySQL system variables set.  Please follow the MySQL recommendations at your discretion.  Always seek the MySQL documentation if you have any questions.') . '</p>';

						print '<p>' . __('The following PHP extensions are mandatory, and MUST be installed before continuing your Cacti install.') . '</p>';

						html_start_box('<strong> ' . __('Required PHP Modules') . '</strong>', '30', 0, '', '', false);
						html_header( array( __('Name'), __('Required'), __('Installed') ) );

						form_alternate_row('phpline',true);
						form_selectable_cell(__('PHP Version'), '');
						form_selectable_cell('5.2.0+', '');
						form_selectable_cell((version_compare(PHP_VERSION, '5.2.0', '<') ? "<font color=red>" . PHP_VERSION . "</font>" : "<font color=green>" . PHP_VERSION . "</font>"), '');
						form_end_row();

						if ($config['cacti_server_os'] == 'unix') {
							$extensions = array(
								array('name' => 'posix',     'installed' => false),
								array('name' => 'session',   'installed' => false),
								array('name' => 'sockets',   'installed' => false),
								array('name' => 'PDO',       'installed' => false),
								array('name' => 'pdo_mysql', 'installed' => false),
								array('name' => 'xml',       'installed' => false),
								array('name' => 'ldap',      'installed' => false),
								array('name' => 'mbstring',  'installed' => false),
								array('name' => 'pcre',      'installed' => false),
								array('name' => 'json',      'installed' => false),
								array('name' => 'openssl',   'installed' => false),
								array('name' => 'gd',        'installed' => false),
								array('name' => 'zlib',      'installed' => false)
							);
						} elseif (version_compare(PHP_VERSION, '5.4.5') < 0) {
							$extensions = array(
								array('name' => 'session',   'installed' => false),
								array('name' => 'sockets',   'installed' => false),
								array('name' => 'PDO',       'installed' => false),
								array('name' => 'pdo_mysql', 'installed' => false),
								array('name' => 'xml',       'installed' => false),
								array('name' => 'ldap',      'installed' => false),
								array('name' => 'mbstring',  'installed' => false),
								array('name' => 'pcre',      'installed' => false),
								array('name' => 'json',      'installed' => false),
								array('name' => 'openssl',   'installed' => false),
								array('name' => 'gd',        'installed' => false),
								array('name' => 'zlib',      'installed' => false)
							);
						} else {
							$extensions = array(
								array('name' => 'com_dotnet','installed' => false),
								array('name' => 'session',   'installed' => false),
								array('name' => 'sockets',   'installed' => false),
								array('name' => 'PDO',       'installed' => false),
								array('name' => 'pdo_mysql', 'installed' => false),
								array('name' => 'xml',       'installed' => false),
								array('name' => 'ldap',      'installed' => false),
								array('name' => 'mbstring',  'installed' => false),
								array('name' => 'pcre',      'installed' => false),
								array('name' => 'json',      'installed' => false),
								array('name' => 'openssl',   'installed' => false),
								array('name' => 'gd',        'installed' => false),
								array('name' => 'zlib',      'installed' => false)
							);
						}

						$ext = verify_php_extensions($extensions);
						foreach ($ext as $id =>$e) {
							form_alternate_row('line' . $id);
							form_selectable_cell($e['name'], '');
							form_selectable_cell('<font color=green>' . __('Yes') . '</font>', '');
							form_selectable_cell(($e['installed'] ? '<font color=green>' . __('Yes') . '</font>' : '<font color=red>' . __('No') . '</font>'), '');
							form_end_row();
							if (!$e['installed']) $enabled = '0';
						}

						html_end_box(false);

						print '<h3>' . __('Optional PHP Module Support') .'</h3>';

						print '<p>' . __('The following PHP extensions are recommended, and should be installed before continuing your Cacti install.') . '</p>';
						$extensions = array(
							array('name' => 'snmp', 'installed' => false),
							array('name' => 'gmp', 'installed' => false)
						);

						$ext = verify_php_extensions($extensions);
						$ext[] = array('name' => 'TrueType Text', 'installed' => function_exists('imagettftext'));
						$ext[] = array('name' => 'TrueType Box', 'installed' => function_exists('imagettfbbox'));

						html_start_box('<strong> ' . __('Optional Modules') . '</strong>', '30', 0, '', '', false);
						html_header( array( __('Name'), __('Optional'), __('Installed') ) );
						foreach ($ext as $id => $e) {
							form_alternate_row('line' . $id, true);
							form_selectable_cell($e['name'], '');
							form_selectable_cell('<font color=green>' . __('Yes') . '</font>', '');
							form_selectable_cell(($e['installed'] ? '<font color=green>' . __('Yes') . '</font>' : '<font color=red>' . __('No') . '</font>'), '');
							form_end_row();
						}

						html_end_box();

						print '<br>' . __('These MySQL performance tuning settings will help your Cacti system perform better without issues for a longer time.') . '<br><br>';

						html_start_box('<strong> ' . __('Recommended MySQL System Variable Settings') . '</strong>', '30', 0, '', '', false);
						utilities_get_mysql_recommendations();
						html_end_box(false);
					} elseif ($step == '3') {
						// install/upgrade
						print '<h2>' . __('Installation Type') . '</h2>';

						if ($default_install_type == '3') {
							// upgrade unless it is not
							print '<input type="hidden" id="install_type" name="install_type" value="3">';
							if (cacti_version_compare($old_cacti_version, CACTI_VERSION, '<=')) {
								// upgrade detected
								print '<h4>' . __('Upgrade from <strong>%s</strong> to <strong>%s</strong>', $old_cacti_version, CACTI_VERSION) . '</h4>';
								print '<p> <font color="#FF0000">' . __('WARNING - If you are upgrading from a previous version please close all Cacti browser sessions and clear cache before continuing.  Additionally, after this script is complete, you will also have to refresh your page to load updated JavaScript so that the Cacti pages render properly.  In Firefox and IE, you simply press F5.  In Chrome, you may have to clear your browser cache for the Cacti web site.') . '</font></p>';
							} else {
								// downgrade detected
								print '<h4>' . __('Downgrade from <strong>%s</strong> to <strong>%s</strong>', $old_cacti_version, CACTI_VERSION) . '</h4>';
								print '<p> <font color="#FF0000">' . __('WARNING - Appears you are downgrading to a previous version.  Database changes made for the newer version will not be reversed and <i>could</i> cause issues.') . '</font></p>';
							}
						} else {
							// new install
							print '<h4>' . __('Please select the type of installation') . '</h4>';

							print '<p>' . __('Installation options:') . '</p>';

							print '<p><ul>';
							print '<li><b><i>' . __('New Primary Server') . '</i></b> - ' . __('Choose this for the Primary site.') . '</li>';
							print '<li><b><i>' . __('New Remote Poller')  . '</i></b> - ' . __('Remote Pollers are used to access networks that are not readily accessible to the Primary site.') . '</li>';
							print '</ul></p>';

							print '<p>
								<select id="install_type" name="install_type">
									<option value="1"' . (($default_install_type == '1') ? ' selected' : '') . '>' . __('New Primary Server') . '</option>
									<option value="2"' . (($default_install_type == '2') ? ' selected' : '') . '>' . __('New Remote Poller') . '</option>
								</select>
							</p>';

							print '<p>' . __('The following information has been determined from Cacti\'s configuration file. If it is not correct, please edit "include/config.php" before continuing.') . '</p>';

							print '<div id="local_database" style="display:none;">';

							print '<h4>' . __('Local Cacti database connection information') . '</h4>';
							print '<p class="code">'
								. __('Database: <b>%s</b>', $database_default) . '<br>'
								. __('Database User: <b>%s</b>', $database_username) . '<br>'
								. __('Database Hostname: <b>%s</b>', $database_hostname) . '<br>'
								. __('Port: <b>%s</b>', $database_port) . '<br>'
								. __('Server Operating System Type: <b>%s</b>', $config['cacti_server_os']) . '<br>'
							. '</p>';

							print '</div>';

							print '<div id="remote_database" style="display:none;">';

							if ($remote_good && $good_write) {
								print '<h4>' . __('Remote Poller Cacti database connection information') . '</h4>';
								print '<p class="code">'
									. __('Database: <b>%s</b>', $rdatabase_default) . '<br>'
									. __('Database User: <b>%s</b>', $rdatabase_username) . '<br>'
									. __('Database Hostname: <b>%s</b>', $rdatabase_hostname) . '<br>'
									. __('Port: <b>%s</b>', $rdatabase_port) . '<br>'
									. __('Server Operating System Type: <b>%s</b>', $config['cacti_server_os']) . '<br>'
								. '</p>';
							} else {
								print '<h4>' . __('Remote Poller Cacti database connection information') . '</h4>';

								if (!$good_write) {
									print '<p class="textError"><strong>' . __('ERROR:') . '</strong> ' . __('Your config.php file must be writable by the web server during install in order to configure the Remote poller.  Once installation is complete, you must set this file to Read Only to prevent possible security issues.');
									print '</p>';
								}

								if (!$remote_good) {
									print '<p class="textError">' . __('ERROR:') . '</strong> ' . __('Your Remote Cacti Poller information has not been included in your config.php file.  Please review the config.php.dist, and set the variables: <i>$rdatabase_default, $rdatabase_username</i>, etc.  These variables must be set and point back to your Primary Cacti database server.  Correct this and try again.') . '</p>';

									print '<p>' . __('The variables that must be set include the following:') . '</p>';
									print '<ul>';
									print '<li>$rdatabase_type     = \'mysql\';</li>';
									print '<li>$rdatabase_default  = \'cacti\';</li>';
									print '<li>$rdatabase_hostname = \'localhost\';</li>';
									print '<li>$rdatabase_username = \'cactiuser\';</li>';
									print '<li>$rdatabase_password = \'cactiuser\';</li>';
									print '<li>$rdatabase_port     = \'3306\';</li>';
									print '<li>$rdatabase_ssl      = false;</li>';
									print '</ul>';

									print '<p>' . __('You must also set the $poller_id variable in the config.php.') . '</p>';

									print '<p>' . __('Once you have the variables set in the config.php file, you must also grant the $rdatabase_username access to the Cacti database.  Follow the same procedure you would with any other Cacti install.  You may then press the \'Test Connection\' button.  If the test is successful you will be able to proceed and complete the install.') . '</p>';
								}
							}
						}

						print '</div>';

						print '<span style="height:20px;margin:4px;" id="results"></span>';

						?>
						<script type="text/javascript">
						$(function() {
							$('#next, #previous, #test').button();

							$('#install_type').change(function() {
								switch($(this).val()) {
								case '1':
									$('#local_database').show();
									$('#remote_database').hide();
									$('#test').hide();
									$('#results').html('');
									$('#next').button('enable');
									$('#next').val('<?php print __('Next'); ?>');
									break;
								case '2':
									$('#local_database').show();
									$('#remote_database').show();
									$('#results').html('');

									<?php if ($remote_good) {?>
									$('#test').button().show();
									if (test_good) {
										$('#next').prop('disabled', false).button('enable');
									} else {
										$('#next').button('disable');
									}
									<?php } else { ?>
									$('#next').button('disable');
									$('#next').val('<?php print __('Next'); ?>');
									<?php } ?>
									break;
								case '3':
									$('#local_database').hide();
									$('#remote_database').hide();
									$('#test').hide();
									$('#results').html('');
									$('#next').button('enable');
									$('#next').val('<?php print $default_install_button; ?>');
									break;
								}
							}).change();

							$('#test').click(function() {
								testRemoteDatabase();
							});
						});

						function testRemoteDatabase() {
							strURL = 'index.php?action=testdb';
							$.post(strURL, $('input').serializeObject()).done(function(data) {
								$('#results').html('<b><?php print __('Remote Database: ');?></b>'+data);
								if (data == 'Connection Successful') {
									test_good=true;
									$('#next').button('enable');
								}
							});
						}
						</script>
						<?php
				 	/* settingscheck */
					} elseif ($step == '4') {
						print '<h2>' . __('Critical Binary Locations and Versions') . '</h2>';

						print '<p>' . __('Make sure all of these values are correct before continuing.') . '</p>';
						$i = 0;
						$input = install_file_paths();
						/* find the appropriate value for each 'config name' above by config.php, database,
						 * or a default for fall back */
						foreach ($input as $name => $array) {
							if (isset($input[$name])) {
								$current_value = $array['default'];

								/* run a check on the path specified only if specified above, then fill a string with
								the results ('FOUND' or 'NOT FOUND') so they can be displayed on the form */
								$form_check_string = '';

								/* draw the acual header and textbox on the form */
								print '<p><strong>' . $array['friendly_name'] . '</strong>';

								if (!empty($array['friendly_name'])) {
									print ': ' . $array['description'];
								} else {
									print '<strong>' . $array['description'] . '</strong>';
								}

								print '<br>';

								switch ($array['method']) {
								case 'textbox':
									form_text_box($name, $current_value, '', '', '40', 'text');
									break;
								case 'filepath':
									form_filepath_box($name, $current_value, '', '', '40', 'text');
									break;
								case 'drop_array':
									form_dropdown($name, $array['array'], '', '', $current_value, '', '');
									break;
								}

								print '<br></p>';
							}

							$i++;
						}

				 	/* settings-install */
					} elseif ($step == '5') {
						include_once('../lib/data_query.php');
						include_once('../lib/utility.php');

						$i = 0;

						$input = install_file_paths();
						/* get all items on the form and write values for them  */
						foreach ($input as $name => $array) {
							if (isset_request_var($name)) {
								db_execute_prepared("REPLACE INTO settings (name,value) VALUES (?, ?)", array($name, get_nfilter_request_var($name)));
							}
						}

						/* Print message and error logs */
						print '<h2>' . __('Directory Permission Checks') . '</h2>';

						print '<p>' . __('Please ensure the directory permissions below are correct before proceeding.  During the install, these directories need to be owned by the Web Server user.  These permission changes are required to allow the Installer to install Device Template packages which include XML and script files that will be placed in these directories.  If you choose not to install the packages, there is an \'install_package.php\' cli script that can be used from the command line after the install is complete.') . '</p>';

						if (get_request_var('install_type') == 1) {
							print '<p>' . __('After the install is complete, you can make some of these directories read only to increase security.') . '</p>';
						} else {
							print '<p>' . __('These directories will be required to stay read writable after the install so that the Cacti remote synchronization process can update them as the Main Cacti Web Site changes') . '</p>';
						}

						$remote_paths = array(
							$config['base_path'] . '/resource/snmp_queries',
							$config['base_path'] . '/resource/script_server',
							$config['base_path'] . '/resource/script_queries',
							$config['base_path'] . '/scripts',
							$config['base_path'] . '/log',
							$config['base_path'] . '/cache/boost',
							$config['base_path'] . '/cache/mibcache',
							$config['base_path'] . '/cache/realtime',
							$config['base_path'] . '/cache/spikekill'
						);

						$always_paths = array(
							$config['base_path'] . '/log',
							$config['base_path'] . '/cache/boost',
							$config['base_path'] . '/cache/mibcache',
							$config['base_path'] . '/cache/realtime',
							$config['base_path'] . '/cache/spikekill'
						);

						$install_paths = array(
							$config['base_path'] . '/resource/snmp_queries',
							$config['base_path'] . '/resource/script_server',
							$config['base_path'] . '/resource/script_queries',
							$config['base_path'] . '/scripts',
						);

						if (get_request_var('install_type') != 2) {
							print '<p><strong>' . __('Required Writable at Install Time Only') . '</strong></p>';
							foreach($install_paths as $path) {
								if (is_writable($path)) {
									print __('<p>%s is <font color="#008000">Writable</font></p>', $path);
								} else {
									print __('<p>%s is <font color="#FF0000">Not Writable</font></p>', $path);
									$writable = false;
								}
							}

							print '<p><strong>' . __('Required Writable after Install Complete') . '</strong></p>';
							foreach($always_paths as $path) {
								if (is_writable($path)) {
									print __('<p>%s is <font color="#008000">Writable</font></p>', $path);
								} else {
									print __('<p>%s is <font color="#FF0000">Not Writable</font></p>', $path);
									$writable = false;
								}
							}
						} else {
							print '<p><strong>' . __('Required Writable after Install Complete') . '</strong></p>';
							foreach($remote_paths as $path) {
								if (is_writable($path)) {
									print __('<p>%s is <font color="#008000">Writable</font></p>', $path);
								} else {
									print __('<p>%s is <font color="#FF0000">Not Writable</font></p>', $path);
									$writable = false;
								}
							}
						}

						/* Print help message for unix and windows if directory is not writable */
						if (($config['cacti_server_os'] == 'unix') && isset($writable)) {
							print '<p>' . __('Make sure your webserver has read and write access to the entire folder structure.<br> Example: chown -R apache.apache %s/resource/', $config['base_path']) . '</p>';
							print '<p>' . __('For SELINUX-users make sure that you have the correct permissions or set \'setenforce 0\' temporarily.') . '</p><br>';
						} elseif (($config['cacti_server_os'] == 'win32') && isset($writable)){
							print __('Check Permissions');
						}else {
							print '<font color="#008000">' . __('All folders are writable') . '</font><br><br>';
						}

						if (get_request_var('install_type') != 2) {
							print '<p><strong><font color="#FF0000">';

							print __('NOTE:') . '</font></strong> ' . __('If you are installing packages, once the packages are installed, you should change the scripts directory back to read only as this presents some exposure to the web site.');

							print '</p>';
						} else {
							print '<p><strong><font color="#FF0000">';

							print __('NOTE:') . '</font></strong> ' . __('For remote pollers, it is critical that the paths that you will be updating frequently, including the plugins, scripts, and resources paths have read/write access as the data collector will have to update these paths from the main web server content.');

							print '</p>';
						}

					/* template-import */
					} elseif ($step == '6') {
						print '<h2>' . __('Template Setup') . '</h2>';

						print '<p>' . __('Please select the Device Templates that you wish to use after the Install.  If you Operating System is Windows, you need to ensure that you select the \'Windows Device\' Template.  If your Operating System is Linux/UNIX, make sure you select the \'Local Linux Machine\' Device Template.') . '</p>';

						print __('Device Templates allow you to monitor and graph a vast assortment of data within Cacti.  After you select the desired Device Templates, press \'Finish\' and the installation will complete.  Please be patient on this step, as the importation of the Device Templates can take a few minutes.') . '<br><br>';
						print '<form name="chk" method="post" action="start.php">';

						$templates = install_setup_get_templates();

						html_start_box('<strong>' . __('Templates') . '</strong>', '100%', '3', 'center', '', '');
						html_header_checkbox( array( __('Name'), __('Description'), __('Author'), __('Homepage') ) );
						foreach ($templates as $id => $p) {
							form_alternate_row('line' . $id, true);
							form_selectable_cell($p['name'], $id);
							form_selectable_cell($p['description'], $id);
							form_selectable_cell($p['author'], $id);
							if ($p['homepage'] != '') {
								form_selectable_cell('<a href="'. $p['homepage'] . '" target=_new>' . $p['homepage'] . '</a>', $id);
							} else {
								form_selectable_cell('', $id);
							}
							form_checkbox_cell($p['name'], $id);
							form_end_row();
						}
						html_end_box(false);

						print '<p><strong><font color="#FF0000">' . __('NOTE:') . ' </font></strong>';

						print __('Press \'Finish\' to complete the installation process after selecting your Device Templates.') . '</p>';

					/* upgrade */
					} elseif ($step == '8') {
						print '<h2>' . __('Upgrade Results') . '</h2>';

						$current_version  = '';
						$failed_sql_query = false;
						$cacti_versions = array_keys($cacti_version_codes);

						$sqltext = array(
							0 => '<span style="color: red; font-weight: bold; font-size: 12px;">' . __('[Fail]') . '</span>&nbsp;',
							1 => '<span style="color: green; font-weight: bold; font-size: 12px;">' . __('[Success]') . '</span>&nbsp;',
							2 => '<span style="color: grey; font-weight: bold; font-size: 12px;">' . __('[Skipped]') . '</span>&nbsp;',
						);

						if (isset($_SESSION['cacti_db_install_cache']) && is_array($_SESSION['cacti_db_install_cache'])) {
							print '<h3>' . __('Database upgrade completed!') . '<h3>';
							$upgrade_results = '';
							foreach ($_SESSION['cacti_db_install_cache'] as $cacti_upgrade_version => $actions) {
								// output version header
								$upgrade_results .= '<h4>' . __('Version: ') . $cacti_upgrade_version . '</h4>' . PHP_EOL;

								// show results from version upgrade
								foreach ($actions as $action) {
									$upgrade_results .= "<p class='code'>" . $sqltext[$action['status']] . '<br>' . nl2br($action['sql']) . "</p>" . PHP_EOL;

									// set sql failure if status set to zero on any action
									if ($action['status'] == 0) {
										$failed_sql_query = true;
									}
								}
								$upgrade_results .= '<br>';
							}

							kill_session_var('cacti_db_install_cache');

							if ($failed_sql_query == true) {
								print '<p><strong><font color="#FF0000">' . __('WARNING:') . '</font></strong> ' . __('One or more of the SQL queries needed to upgraded your Cacti installation has failed. Please see below for more details. Your Cacti MySQL user must have <strong>SELECT, INSERT, UPDATE, DELETE, ALTER, CREATE, and DROP</strong> permissions. You should try executing the failed queries as "root" to ensure that you do not have a permissions problem.') . '</p>' . PHP_EOL;
							}

							print $upgrade_results;
						} else {
							print '<em>' . __('No database action needed.') . '</em>';
						}

					// upgrade-oldversion
					} elseif ($step == '9') {
						print '<p style="font-size: 16px; font-weight: bold; color: red;">' . __('Important Upgrade Notice') . '</p>';
						print '<p>' . __('Before you continue with the installation, you <strong>must</strong> update your <tt>/etc/crontab</tt> file to point to <tt>poller.php</tt> instead of <tt>cmd.php</tt>.') . '</p>';
						print '<p>' . __('See the sample crontab entry below with the change made in red. Your crontab line will look slightly different based upon your setup.') . '</p>';
						print '<p><tt>*/5 * * * * cactiuser php /var/www/html/cacti/<span style="font-weight: bold; color: red;">poller.php</span> &gt; /dev/null 2&gt;&amp;1</tt></p>';
						print '<p>' . __('Once you have made this change, please click Finish to continue.') . '</p>';

					} ?>
					</td>
					<?php html_end_box(false); ?>
				</tr>
				<tr>
					<td class='saveRow' style='text-align:left'>
						<?php if ($step > 1) {?><input id='previous' type='button' value='<?php print __x('Dialog: previous', 'Previous'); ?>'><?php }?>
						<input id='next' type='submit' value='<?php if ($step == '9'){ print __x('Dialog: complete', 'Finish'); } else { print __x('Dialog: go to the next page', $default_install_button); }?>'>
						<input id='test' type='button' style='display:none' title='<?php print __('Test remote database connection');?>' value='<?php print __x('Dialog: test connection', 'Test Connection'); ?>'>
						<input type='hidden' id='previous_step' name='previous_step' value='<?php print $previous_step;?>'>
					</td>
				<tr>
			</table>
		</td>
	</tr>
</table>

<input type='hidden' name='step' value='<?php print $step;?>'>
<script type='text/javascript'>
var step=<?php print $step;?>;
var enabled=<?php print $enabled;?>;
var install_type=<?php print get_request_var('install_type');?>;
var test_good=false;

$(function() {
	$('#next, #previous, #test').button();

	if (step == 0) {
		$('#next').button('disable');
	}else if (step == 1) {
		$('#next').button('disable');
	}else if (step == 8) {
		$('#next').val('<?php print __('Finish');?>');
	}else if (step == 5 && install_type == 2) {
		$('#next').val('<?php print __('Finish');?>');
	}else if (step == 6 && install_type == 1) {
		$('#next').val('<?php print __('Finish');?>');
	}

	$('#previous').click(function() {
		document.location = '?step='+$('#previous_step').val();
	});

	$('#accept').click(function() {
		if ($(this).is(':checked')) {
			$('#next').button('enable');
		} else {
			$('#next').button('disable');
		}
	});

	if (step == 3) {
		// script is handled in the step
	}else if (enabled) {
		$('#next').button('enable');
	} else {
		$('#next').button('disable');
	}

	if ($('#accept').length) {
		if ($('#accept').is(':checked')) {
			$('#next').button('enable');
		} else {
			$('#next').button('disable');
		}
	}

	$('#database_hostname').keyup(function() {
		if ($('#database_hostname').val() == 'localhost') {
			$('#testdb').button('disable');
		}else if ($('#database_hostname').val() == '127.0.0.1') {
			$('#testdb').button('disable');
		} else {
			$('#testdb').button('enable');
		}
	});
});
</script>

</form>
<?php
include('../include/global_session.php');
?>
</body>
</html>
