#!/usr/bin/php -q
<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2004-2017 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/                                                   |
 +-------------------------------------------------------------------------+
*/

/* do NOT run this script through a web browser */
if (!isset($_SERVER['argv'][0]) || isset($_SERVER['REQUEST_METHOD'])  || isset($_SERVER['REMOTE_ADDR'])) {
   die('<br><strong>This script is only meant to run at the command line.</strong>');
}

/* We are not talking to the browser */
$no_http_headers = true;

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

include(dirname(__FILE__) . '/../include/global.php');
include_once($config['base_path'] . '/lib/data_query.php');
include_once($config['base_path'] . '/lib/utility.php');
include_once($config['base_path'] . '/install/functions.php');

/* process calling arguments */
$parms = $_SERVER['argv'];
array_shift($parms);

global $debug, $cli_upgrade, $session;

$debug       = true;
$cli_upgrade = true;
$session     = array();
$forcever    = '';

if (sizeof($parms)) {
	foreach($parms as $parameter) {
		if (strpos($parameter, '=')) {
			list($arg, $value) = explode('=', $parameter);
		} else {
			$arg = $parameter;
			$value = '';
		}

		switch ($arg) {
			case '--forcever':
				$forcever = $value;
				break;
			case '-d':
			case '--debug':
				$debug = true;
				break;
			case '--version':
			case '-V':
			case '-v':
				display_version();
			case '--help':
			case '-H':
			case '-h':
				display_help();
				exit;
			default:
				echo "ERROR: Invalid Parameter " . $parameter . PHP_EOL . PHP_EOL;
				display_help();
				exit;
		}
	}
}

/* we need to rerun the upgrade, force the current version */
if ($forcever == '') {
	$old_cacti_version = get_cacti_version();
} else {
	$old_cacti_version = $forcever;
}

/* try to find current (old) version in the array */
$old_version_index = (array_key_exists($old_cacti_version, $cacti_version_codes) ? $old_cacti_version : '');

/* do a version check */
if ($old_cacti_version == CACTI_VERSION) {
	echo "Your Cacti is already up to date." . PHP_EOL;
	exit;
} elseif ($old_cacti_version < 0.7) {
	echo 'You are attempting to install cacti ' . CACTI_VERSION . ' onto a 0.6.x database.' . PHP_EOL . "To continue, you must create a new database, import 'cacti.sql' into it," . PHP_EOL . "and\tupdate 'include/config.php' to point to the new database." . PHP_EOL;
	exit;
} elseif (empty($old_cacti_version)) {
	echo "You have created a new database, but have not yet imported the 'cacti.sql' file." . PHP_EOL;
	exit;
} elseif ($old_version_index == '') {
	echo "Invalid Cacti version $old_cacti_version, cannot upgrade to " . CACTI_VERSION . PHP_EOL;
	exit;
}

// loop through versions from old version to the current, performing updates for each version in the chain
foreach ($cacti_version_codes as $cacti_version => $hash_code)  {

	// skip versions old than the database version
	if (version_compare($old_cacti_version, $cacti_version, '>=')) {
		continue;
	}

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

	// check for upgrade version file, then include, check for function and execute
	echo 'Upgrading to ' . $cacti_version . ' ';
	if (file_exists($upgrade_file)) {
		include($upgrade_file);
		echo PHP_EOL;
		if (function_exists($upgrade_function)) {
			call_user_func($upgrade_function);
			db_install_errors($cacti_version);
		} else {
			echo 'Error: upgrade function (' . $upgrade_function . ') not found' . PHP_EOL;;
		}
	} else {
		echo "no actions" . PHP_EOL;
	}

	if (CACTI_VERSION == $cacti_version) {
		break;
	}
}

db_execute("UPDATE version SET cacti = '" . CACTI_VERSION . "'");

function db_install_errors($cacti_version) {
	global $session;

	if (sizeof($session)) {	
		foreach ($session as $sc) {
			if (isset($sc[$cacti_version])) {
				foreach ($sc[$cacti_version] as $value => $sql) {
					if ($value == 0) {
						echo "    DB Error: " . $sql . PHP_EOL;
					}
				}
			}
		}
	}
}

/*  display_version - displays version information */
function display_version() {
	$version = get_cacti_version();
    echo "Cacti Database Upgrade Utility, Version $version, " . COPYRIGHT_YEARS . PHP_EOL;
}

/*  display_help - displays the usage of the function */
function display_help () {
    display_version();

    echo PHP_EOL . "usage: upgrade_database.php [--debug] [--forcever=VERSION]" . PHP_EOL . PHP_EOL;
	echo "A command line version of the Cacti database upgrade tool.  You must execute" . PHP_EOL;
	echo "this command as a super user, or someone who can write a PHP session file." . PHP_EOL;
	echo "Typically, this user account will be apache, www-run, or root." . PHP_EOL . PHP_EOL;
	echo "If you are running a beta or alpha version of Cacti and need to rerun" . PHP_EOL;
	echo "the upgrade script, simply set the forcever to the previous release." . PHP_EOL . PHP_EOL;
    echo "--forcever - Force the starting version, say " . CACTI_VERSION . PHP_EOL;
    echo "--debug    - Display verbose output during execution" . PHP_EOL . PHP_EOL;
}
