#!/usr/bin/php
<?php

/*
 * LibreNMS
 *
 * Copyright (c) 2014 Neil Lathwood <https://github.com/laf/ http://www.lathwood.co.uk/fa>
 *
 * 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 3 of the License, or (at your
 * option) any later version.  Please see LICENSE.txt at the top level of
 * the source code distribution for details.
 */

include('includes/console_colour.php');
$console_color = new Console_Color2();

$options = getopt("m:h::");

if (isset($options['h'])) {

print $console_color->convert("\n Validate setup tool

Usage: ./validate.php [-m <module>] [-h]
 -h This help section.
 -m Any sub modules you want to run, comma separated:
    - mail: this will test your email settings  (uses default_mail option even if default_only is not set).

Example: ./validate.php -m mail.

");
exit;

}

if (strstr(`php -ln config.php`,"No syntax errors detected")) {
    $first_line = `head -n1 config.php`;
    $last_lines = explode(PHP_EOL,`tail -n2 config.php`);
    if (strstr($first_line,'\<\?php')) {
        print_fail("config.php doesn't start with a <?php - please fix this ($first_line)");
    } elseif ($last_lines[0] == '?>' && $last_lines[1] == '') {
        print_fail('config.php contains a new line at the end, please remove any whitespace at the end of the file and also remove ?>');
    } elseif ($last_lines[1] == '?>') {
        print_warn("It looks like you have ?> at the end of config.php, it's suggested you remove this");
    } else {
        print_ok('config.php tested ok');
    }
} else {
    print_fail('Syntax error in config.php');
}

// load config.php now
require_once "includes/defaults.inc.php";
require_once "config.php";
require_once "includes/definitions.inc.php";
require_once "includes/functions.php";
require_once $config['install_dir']."/includes/alerts.inc.php";

// Run test on MySQL
$test_db = @mysqli_connect($config['db_host'],$config['db_user'],$config['db_pass'],$config['db_name']);
if (mysqli_connect_error()) {
    print_fail("Error connecting to your database " . mysqli_connect_error());
} else {
    print_ok('Database connection successful');
}

// Test transports
if ($config['alerts']['email']['enable'] === TRUE) {
    print_warn("You have the old alerting system enabled - this is to be deprecated on the 1st of June 2015: https://groups.google.com/forum/#!topic/librenms-project/1llxos4m0p4");
}

// Test rrdcached
if (!$config['rrdcached']) {
    $rrd_dir = stat($config['rrd_dir']);
    if ($rrd_dir[4] == 0 || $rrd_dir[5] == 0) {
        print_warn("Your RRD directory is owned by root, please consider changing over to user a non-root user");
    }
    if (substr(sprintf('%o', fileperms($config['rrd_dir'])), -3) != 775) {
        print_warn("Your RRD directory is not set to 0775, please check our installation instructions");
    }
}

// Disk space and permission checks
if (substr(sprintf('%o', fileperms($config['temp_dir'])), -3) != 777) {
    print_warn("Your tmp directory (".$config['temp_dir'].") is not set to 777 so graphs most likely won't be generated");
}

$space_check = disk_free_space($config['install_dir'])/1024/1024;
if ($space_check < 512 && $space_check > 1) {
    print_warn("Disk space where " . $config['install_dir'] . " is located is less than 512Mb");
}
if ($space_check < 1) {
    print_fail("Disk space where " . $config['install_dir'] . " is located is empty!!!");
}

// Check programs
$bins = array('fping');
foreach ($bins as $bin) {
    if (!is_file($config[$bin])) {
        print_fail("$bin location is incorrect or bin not installed");
    } else {
        print_ok("$bin has been found");
    }
}

// Modules test
$modules = explode(",",$options['m']);
foreach ($modules as $module) {
    switch ($module) {
        case "mail":
            if ($config['alert']['transports']['mail'] === TRUE) {
                $run_test = 1;
                if (empty($config['alert']['default_mail'])) {
                    print_fail("default_mail config option needs to be specified to test email");
                    $run_test = 0;
                } elseif ($config['email_backend'] == 'sendmail') {
                    if (empty($config['email_sendmail_path']) || !file_exists($config['email_sendmail_path'])) {
                        print_fail("You have selected sendmail but not configured email_sendmail_path or it's not valid");
                        $run_test = 0;
                    }
                } elseif ($config['email_backend'] == 'smtp') {
                    if (empty($config['email_smtp_host'])) {
                        print_fail("You have selected smtp but not configured an smtp host");
                        $run_test = 0;
                    }
                    if (empty($config['email_smtp_port'])) {
                        print_fail("You have selected smtp but not configured an smtp port");
                        $run_test = 0;
                    }
                    if (($config['email_smtp_auth'] === TRUE) && (empty($config['email_smtp_username']) || empty($config['email_smtp_password']))) {
                        print_fail("You have selected smtp but not configured a username or password");
                        $run_test = 0;
                    }
                }
                if ($run_test == 1) {
                    if ($err = send_mail($config['alert']['default_mail'], 'Test email', 'Testing email from NMS')) {
                        print_ok("Email has been sent");
                    } else {
                         print_fail("Issue sending email to " . $config['alert']['default_mail'] . " with error " . $err);
                    }
                }
            }
            break;
    }
}

// End

function print_ok($msg) {
    global $console_color;
    print $console_color->convert("%g[OK]%n      %W$msg\n");
}

function print_fail($msg) {
    global $console_color;
    print $console_color->convert("%r[FAIL]%n    %W$msg\n");
}

function print_warn($msg) {
    global $console_color;
    print $console_color->convert("%y[WARN]%n    %W$msg\n");
}

?>