<?php
# voicemail_check.php    version 2.14
# 
# Copyright (C) 2022  Matt Florell <vicidial@gmail.com>    LICENSE: AGPLv2
#
# This script is designed purely to check whether the voicemail box on the server defined has new and old messages
# This script depends on the server_ip being sent and also needs to have a valid user/pass from the vicidial_users table
# 
# required variables:
#  - $server_ip
#  - $session_name
#  - $user
#  - $pass
# optional variables:
#  - $format - ('text','debug')
#  - $vmail_box - ('101','1234',...)
# 
#
# changes
# 50422-1147 - First build of script
# 50503-1241 - added session_name checking for extra security
# 50711-1201 - removed HTTP authentication in favor of user/pass vars
# 60421-1147 - check GET/POST vars lines with isset to not trigger PHP NOTICES
# 60619-1204 - Added variable filters to close security holes for login form
# 90508-0727 - Changed to PHP long tags
# 130328-0025 - Converted ereg to preg functions
# 130603-2202 - Added login lockout for 15 minutes after 10 failed logins, and other security fixes
# 130802-1038 - Changed to PHP mysqli functions
# 140811-0801 - Changed to use QXZ function for echoing text
# 141118-1240 - Formatting changes for QXZ output
# 141216-1902 - Added language settings lookups and user/pass variable standardization
# 150723-1711 - Added ajax logging
# 170526-2351 - Added additional variable filtering
# 210616-2109 - Added optional CORS support, see options.php for details
# 210825-0910 - Fix for XSS security issue
# 220220-0855 - Added allow_web_debug system setting
#

$version = '2.14-17';
$build = '220220-0855';
$php_script = 'voicemail_check.php';
$SSagent_debug_logging=0;
$startMS = microtime();

require_once("dbconnect_mysqli.php");
require_once("functions.php");

### If you have globals turned off uncomment these lines
if (isset($_GET["user"]))					{$user=$_GET["user"];}
	elseif (isset($_POST["user"]))			{$user=$_POST["user"];}
if (isset($_GET["pass"]))					{$pass=$_GET["pass"];}
	elseif (isset($_POST["pass"]))			{$pass=$_POST["pass"];}
if (isset($_GET["server_ip"]))				{$server_ip=$_GET["server_ip"];}
	elseif (isset($_POST["server_ip"]))		{$server_ip=$_POST["server_ip"];}
if (isset($_GET["session_name"]))			{$session_name=$_GET["session_name"];}
	elseif (isset($_POST["session_name"]))	{$session_name=$_POST["session_name"];}
if (isset($_GET["format"]))					{$format=$_GET["format"];}
	elseif (isset($_POST["format"]))		{$format=$_POST["format"];}
if (isset($_GET["vmail_box"]))				{$vmail_box=$_GET["vmail_box"];}
	elseif (isset($_POST["vmail_box"]))		{$vmail_box=$_POST["vmail_box"];}

$user=preg_replace("/\'|\"|\\\\|;| /","",$user);
$pass=preg_replace("/\'|\"|\\\\|;| /","",$pass);

# default optional vars if not set
if (!isset($format))   {$format="text";}

$StarTtime = date("U");
$NOW_DATE = date("Y-m-d");
$NOW_TIME = date("Y-m-d H:i:s");
if (!isset($query_date)) {$query_date = $NOW_DATE;}

# if options file exists, use the override values for the above variables
#   see the options-example.php file for more information
if (file_exists('options.php'))
	{
	require('options.php');
	}

#############################################
##### START SYSTEM_SETTINGS AND USER LANGUAGE LOOKUP #####
$VUselected_language = '';
$stmt="SELECT selected_language from vicidial_users where user='$user';";
#if ($DB) {echo "|$stmt|\n";}
$rslt=mysql_to_mysqli($stmt, $link);
	if ($mel > 0) {mysql_error_logging($NOW_TIME,$link,$mel,$stmt,'00XXX',$user,$server_ip,$session_name,$one_mysql_log);}
$sl_ct = mysqli_num_rows($rslt);
if ($sl_ct > 0)
	{
	$row=mysqli_fetch_row($rslt);
	$VUselected_language =		$row[0];
	}

$stmt = "SELECT use_non_latin,enable_languages,language_method,agent_debug_logging,allow_web_debug FROM system_settings;";
$rslt=mysql_to_mysqli($stmt, $link);
	if ($mel > 0) {mysql_error_logging($NOW_TIME,$link,$mel,$stmt,'00XXX',$user,$server_ip,$session_name,$one_mysql_log);}
#if ($DB) {echo "$stmt\n";}
$qm_conf_ct = mysqli_num_rows($rslt);
if ($qm_conf_ct > 0)
	{
	$row=mysqli_fetch_row($rslt);
	$non_latin =				$row[0];
	$SSenable_languages =		$row[1];
	$SSlanguage_method =		$row[2];
	$SSagent_debug_logging =	$row[3];
	$SSallow_web_debug =		$row[4];
	}
if ($SSallow_web_debug < 1) {$DB=0;}
##### END SETTINGS LOOKUP #####
###########################################

$session_name = preg_replace('/[^-\.\:\_0-9a-zA-Z]/','',$session_name);
$server_ip = preg_replace('/[^-\.\:\_0-9a-zA-Z]/','',$server_ip);
$vmail_box = preg_replace('/[^-_0-9\p{L}]/u',"",$vmail_box);
$format = preg_replace('/[^-_0-9a-zA-Z]/','',$format);

if ($non_latin < 1)
	{
	$user=preg_replace("/[^-_0-9a-zA-Z]/","",$user);
	$pass=preg_replace("/[^-\.\+\/\=_0-9a-zA-Z]/","",$pass);
	}
else
	{
	$user = preg_replace('/[^-_0-9\p{L}]/u','',$user);
	$pass = preg_replace('/[^-\.\+\/\=_0-9\p{L}]/u','',$pass);
	}

$auth=0;
$auth_message = user_authorization($user,$pass,'',0,1,0,0,'voicemail_check');
if ($auth_message == 'GOOD')
	{$auth=1;}
if (strlen($SSagent_debug_logging) > 1)
	{
	if ($SSagent_debug_logging == "$user")
		{$SSagent_debug_logging=1;}
	else
		{$SSagent_debug_logging=0;}
	}

if( (strlen($user)<2) or (strlen($pass)<2) or ($auth==0))
	{
	echo _QXZ("Invalid Username/Password:")." |$user|$pass|$auth_message|\n";
	exit;
	}
else
	{
	if( (strlen($server_ip)<6) or (!isset($server_ip)) or ( (strlen($session_name)<12) or (!isset($session_name)) ) )
		{
		echo _QXZ("Invalid server_ip: %1s or Invalid session_name: %2s",0,'',$server_ip,$session_name)."\n";
		exit;
		}
	else
		{
		$stmt="SELECT count(*) from web_client_sessions where session_name='$session_name' and server_ip='$server_ip';";
		if ($DB) {echo "|$stmt|\n";}
		$rslt=mysql_to_mysqli($stmt, $link);
		$row=mysqli_fetch_row($rslt);
		$SNauth=$row[0];
		  if($SNauth==0)
			{
			echo _QXZ("Invalid session_name:")." |$session_name|$server_ip|\n";
			exit;
			}
		  else
			{
			# do nothing for now
			}
		}
	}

if ($format=='debug')
	{
	echo "<html>\n";
	echo "<head>\n";
	echo "<!-- VERSION: $version     BUILD: $build    VMBOX: $vmail_box   server_ip: $server_ip-->\n";
	echo "<title>"._QXZ("Voicemail Check");
	echo "</title>\n";
	echo "</head>\n";
	echo "<BODY BGCOLOR=white marginheight=0 marginwidth=0 leftmargin=0 topmargin=0>\n";
	}

$MT[0]='';
$row='';   $rowx='';
if (strlen($vmail_box)<1)
	{
	$channel_live=0;
	echo _QXZ("voicemail box %1s is not valid",0,'',$vmail_box)."\n";
	exit;
	}
else
	{
	$stmt="SELECT messages,old_messages FROM phones where server_ip='$server_ip' and voicemail_id='$vmail_box' limit 1;";
		if ($format=='debug') {echo "\n<!-- $stmt -->";}
	$rslt=mysql_to_mysqli($stmt, $link);
	$vmails_list = mysqli_num_rows($rslt);
	$loop_count=0;
		while ($vmails_list>$loop_count)
		{
		$loop_count++;
		$row=mysqli_fetch_row($rslt);
		echo "$row[0]|$row[1]";
		if ($format=='debug') {echo "\n<!-- $row[0]     $row[1] -->";}
		}
	}


if ($format=='debug') 
	{
	$ENDtime = date("U");
	$RUNtime = ($ENDtime - $StarTtime);
	echo "\n<!-- script runtime: $RUNtime seconds -->";
	echo "\n</body>\n</html>\n";
	}

if ($SSagent_debug_logging > 0) {vicidial_ajax_log($NOW_TIME,$startMS,$link,$ACTION,$php_script,$user,$stage,$lead_id,$session_name,$stmt);}
exit; 

?>
