#!/usr/bin/perl
#
# agi-AGENT_dial_in.agi      version 2.6
#
# This script is designed to allow agents the ability to dial in to an extension
# to establish the phone connection to their VICIDIAL session. The user login
# and password must be only digits and nothing but digits to use this utility.
#
# user is prompted for their user ID then press #
# user is prompted for their passcode then press #
# then the user is forwarded to the active vicidial agent session
#
# ; settings for this script:
# ; 1. allow user_id only login (disabled by default)
# ;     Y - allow user ID only with no password
# ;     CONTACTS - lookup the user ID as the 'office_num' field in the contact_information table
# ;     N or (blank) - require password (default)
# ; 2. forward to A or B within Call Menu instead of logging into an agent session
# ;     Y - forward to A option on valid user ID or B option on invalid user ID
# ;     N or (blank) - go to agent session (default)
#
# can be added as an AGI to a Call Menu, or as below:
# ;agent dial-in:
#exten => 2345,1,Answer		; Answer the line
#exten => 2345,2,AGI(agi-AGENT_dial_in.agi)
#exten => 2345,3,Hangup
#
# ; call menu with options:
# 	agi-AGENT_dial_in.agi,Y---Y
#
# Copyright (C) 2013  Matt Florell <vicidial@gmail.com>    LICENSE: AGPLv2
#
# CHANGELOG
# 81022-2115 - First build
# 120511-1423 - Added new options
# 130108-1809 - Changes for Asterisk 1.8 compatibility
#

&get_time_now;
  $start_epoch = $now_date_epoch;

$script = 'agi-AGENT_dial_in.agi';

$now_date_epoch = time();
$now_date = "$year-$mon-$mday $hour:$min:$sec";

($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
$year = ($year + 1900);
$mon++;
if ($mon < 10) {$mon = "0$mon";}
if ($mday < 10) {$mday = "0$mday";}
if ($hour < 10) {$hour = "0$hour";}
if ($min < 10) {$min = "0$min";}
if ($sec < 10) {$sec = "0$sec";}

$US='_';


# default path to astguiclient configuration file:
$PATHconf =		'/etc/astguiclient.conf';

open(conf, "$PATHconf") || die "can't open $PATHconf: $!\n";
@conf = <conf>;
close(conf);
$i=0;
foreach(@conf)
	{
	$line = $conf[$i];
	$line =~ s/ |>|\n|\r|\t|\#.*|;.*//gi;
	if ( ($line =~ /^PATHlogs/) && ($CLIlogs < 1) )
		{$PATHlogs = $line;   $PATHlogs =~ s/.*=//gi;}
	if ( ($line =~ /^PATHsounds/) && ($CLIsounds < 1) )
		{$PATHsounds = $line;   $PATHsounds =~ s/.*=//gi;}
	if ( ($line =~ /^PATHmonitor/) && ($CLImonitor < 1) )
		{$PATHmonitor = $line;   $PATHmonitor =~ s/.*=//gi;}
	if ( ($line =~ /^VARserver_ip/) && ($CLIserver_ip < 1) )
		{$VARserver_ip = $line;   $VARserver_ip =~ s/.*=//gi;}
	if ( ($line =~ /^VARDB_server/) && ($CLIDB_server < 1) )
		{$VARDB_server = $line;   $VARDB_server =~ s/.*=//gi;}
	if ( ($line =~ /^VARDB_database/) && ($CLIDB_database < 1) )
		{$VARDB_database = $line;   $VARDB_database =~ s/.*=//gi;}
	if ( ($line =~ /^VARDB_user/) && ($CLIDB_user < 1) )
		{$VARDB_user = $line;   $VARDB_user =~ s/.*=//gi;}
	if ( ($line =~ /^VARDB_pass/) && ($CLIDB_pass < 1) )
		{$VARDB_pass = $line;   $VARDB_pass =~ s/.*=//gi;}
	if ( ($line =~ /^VARDB_port/) && ($CLIDB_port < 1) )
		{$VARDB_port = $line;   $VARDB_port =~ s/.*=//gi;}
	$i++;
	}

if (!$VARDB_port) {$VARDB_port='3306';}
if (!$AGILOGfile) {$AGILOGfile = "$PATHlogs/ivrout.$year-$mon-$mday";}

use DBI;
use Asterisk::AGI;
$AGI = new Asterisk::AGI;

$dbhA = DBI->connect("DBI:mysql:$VARDB_database:$VARDB_server:$VARDB_port", "$VARDB_user", "$VARDB_pass")
    or die "Couldn't connect to database: " . DBI->errstr;


### BEGIN parsing run-time options ###
if (length($ARGV[0])>1)
	{
	if ($AGILOG) {$agi_string = "Perl Environment Dump:";   &agi_output;}
	$i=0;
	while ($#ARGV >= $i)
		{
		$args = "$args $ARGV[$i]";
		if ($AGILOG) {$agi_string = "$i|$ARGV[$i]";   &agi_output;}
		$i++;
		}
	
	### list of command-line array arguments:
	@ARGV_vars = split(/---/, $ARGV[0]);

	$user_id_only =		$ARGV_vars[0];
	$use_call_menu = 	$ARGV_vars[1];
	}
if ( (length($user_id_only) < 1) || ($user_id_only !~ /Y|N/) )
	{$user_id_only = 'N';}
if ( (length($use_call_menu) < 1) || ($use_call_menu !~ /Y|N/) )
	{$use_call_menu = 'N';}
### END parsing run-time options ###


$|=1;
while(<STDIN>) 
{
	chomp;
	last unless length($_);
	if ($V)
	{
		if (/^agi_(\w+)\:\s+(.*)$/)
		{
			$AGI{$1} = $2;
		}
	}

	if (/^agi_context\:\s+(.*)$/)		{$context = $1;}
	if (/^agi_uniqueid\:\s+(.*)$/)		{$unique_id = $1;}
	if (/^agi_extension\:\s+(.*)$/)		{$extension = $1;}
	if (/^agi_channel\:\s+(.*)$/)		{$channel = $1;}
	if (/^agi_callerid\:\s+(.*)$/)		{$callerid = $1;}
	if (/^agi_calleridname\:\s+(.*)$/)	{$calleridname = $1;}
}

if ( ($callerid =~ /\".*\"/) && ( (!$calleridname) or ($calleridname =~ /unknown/) ) )
	{
	$calleridname = $callerid;
	$calleridname =~ s/\<\d\d\d\d\d\d\d\d\d\d\>//gi;
	$calleridname =~ s/\"|\" //gi;
	}

	$callerid =~ s/\D//gi;
	$calleridname =~ s/unknown//gi;
if ( (!$callerid) or ($callerid =~ /unknown/) )
	{$callerid = $calleridname;}
$phone_number=$callerid;

### Grab Server values from the database
$stmtA = "SELECT ext_context,agi_output FROM servers where server_ip = '$VARserver_ip';";
$sthA = $dbhA->prepare($stmtA) or die "preparing: ",$dbhA->errstr;
$sthA->execute or die "executing: $stmtA ", $dbhA->errstr;
$sthArows=$sthA->rows;
 $rec_count=0;
while ($sthArows > $rec_count)
	{
	@aryA = $sthA->fetchrow_array;
	$DBext_context =			"$aryA[0]";
	$DBagi_output =				"$aryA[1]";
	if ($DBext_context)				{$ext_context = $DBext_context;}
	if ($DBagi_output =~ /STDERR/)	{$AGILOG = '1';}
	if ($DBagi_output =~ /FILE/)	{$AGILOG = '2';}
	if ($DBagi_output =~ /BOTH/)	{$AGILOG = '3';}
	 $rec_count++;
	}
$sthA->finish();



$AGI->stream_file('sip-silence');
$AGI->stream_file('sip-silence');


$entry_chances=0;
$VALID_login=0;
$ACTIVE_login=0;
$VDADremDIALstr='';
while ( ($entry_chances < 3) && ($VALID_login < 1) ) 
	{
	$entry_chances++;


	&user_password_gather;


	###### Check userID and password against vicidial_users table
	if ($user_id_only =~ /CONTACT/)
		{
		#############################################
		##### START SYSTEM SETTINGS LOOKUP      #####
		$stmtA = "SELECT alt_log_server_ip,alt_log_dbname,alt_log_login,alt_log_pass,tables_use_alt_log_db FROM system_settings;";
		$sthA = $dbhA->prepare($stmtA) or die "preparing: ",$dbhA->errstr;
		$sthA->execute or die "executing: $stmtA ", $dbhA->errstr;
		$sthArows=$sthA->rows;
		if ($sthArows > 0)
			{
			@aryA = $sthA->fetchrow_array;
			$alt_log_server_ip =			$aryA[0];
			$alt_log_dbname =				$aryA[1];
			$alt_log_login =				$aryA[2];
			$alt_log_pass =					$aryA[3];
			$tables_use_alt_log_db =		$aryA[4];
			}
		$sthA->finish();
		##### END SYSTEM SETTINGS LOOKUP      #####
		###########################################

		if ( ($tables_use_alt_log_db =~ /contact_information/) && (length($alt_log_server_ip)>4) && (length($alt_log_dbname)>0) )
			{
			$linkALT = DBI->connect("DBI:mysql:$alt_log_dbname:$alt_log_server_ip:$VARDB_port", "$alt_log_login", "$alt_log_pass")
				or die "Couldn't connect to database: " . DBI->errstr;
			}
		else
			{$linkALT = $dbhA;}

		$stmtA = "SELECT count(*) FROM contact_information where office_num='$PIN_number';";
		$sthA = $linkALT->prepare($stmtA) or die "preparing: ",$dbhA->errstr;
		$sthA->execute or die "executing: $stmtA ", $linkALT->errstr;
		$sthArows=$sthA->rows;
		if ($sthArows > 0)
			{
			@aryA = $sthA->fetchrow_array;
			$VALID_login = "$aryA[0]";
			}
		$sthA->finish();
		}
	else
		{
		$stmtA = "SELECT count(*) FROM vicidial_users where user='$PIN_number' and pass='$PASS_word' and active='Y';";
		if ($user_id_only =~ /Y/)
			{$stmtA = "SELECT count(*) FROM vicidial_users where user='$PIN_number' and active='Y';";}
		$sthA = $dbhA->prepare($stmtA) or die "preparing: ",$dbhA->errstr;
		$sthA->execute or die "executing: $stmtA ", $dbhA->errstr;
		$sthArows=$sthA->rows;
		if ($sthArows > 0)
			{
			@aryA = $sthA->fetchrow_array;
			$VALID_login = "$aryA[0]";
			}
		$sthA->finish();
		}

	if ($VALID_login > 0) 
		{
		$AGI->exec("EXEC Set(_agent_user_id=$PIN_number)");

		$AGI->stream_file('pin-number-accepted');
		}
	else
		{
		$AGI->stream_file('pin-invalid');
		}
	}



if ($VALID_login < 1) 
	{
	if ($AGILOG) {$agi_string = "DIAL-IN END: Invalid Login   |$VALID_login|$PIN_number|$PASS_word|";   &agi_output;}

	if ($use_call_menu =~ /Y/)
		{
		if ($AGILOG) {$agi_string = "exiting the agent dial-in app, transferring call to B @ $context";   &agi_output;}
		print "SET CONTEXT $context\n";
			$result = <STDIN>;
			checkresult($result);
		print "SET EXTENSION B\n";
			$result = <STDIN>;
			checkresult($result);
		print "SET PRIORITY 1\n";
			$result = <STDIN>;
			checkresult($result);
		}
	else
		{
		$AGI->stream_file('vm-goodbye');

		$AGI->hangup();

		$dbhA->disconnect();
		}
	exit;
	}
else
	{
	$secX = time();
	$PDtarget = ($secX - 30);
	($Psec,$Pmin,$Phour,$Pmday,$Pmon,$Pyear,$Pwday,$Pyday,$Pisdst) = localtime($PDtarget);
	$Pyear = ($Pyear + 1900);
	$Pmon++;
	if ($Pmon < 10) {$Pmon = "0$Pmon";}
	if ($Pmday < 10) {$Pmday = "0$Pmday";}
	if ($Phour < 10) {$Phour = "0$Phour";}
	if ($Pmin < 10) {$Pmin = "0$Pmin";}
	if ($Psec < 10) {$Psec = "0$Psec";}
		$PDtsSQLdate = "$Pyear$Pmon$Pmday$Phour$Pmin$Psec";


	if ($use_call_menu =~ /Y/)
		{
		if ($AGILOG) {$agi_string = "exiting the agent dial-in app, transferring call to A @ $context";   &agi_output;}
		print "SET CONTEXT $context\n";
			$result = <STDIN>;
			checkresult($result);
		print "SET EXTENSION A\n";
			$result = <STDIN>;
			checkresult($result);
		print "SET PRIORITY 1\n";
			$result = <STDIN>;
			checkresult($result);


		exit;
		}

	else
		{
		###### Check if user is logged in, vicidial_live_agents table
		$stmtA = "SELECT count(*) FROM vicidial_live_agents where user='$PIN_number' and last_update_time > \"$PDtsSQLdate\";";
		$sthA = $dbhA->prepare($stmtA) or die "preparing: ",$dbhA->errstr;
		$sthA->execute or die "executing: $stmtA ", $dbhA->errstr;
		$sthArows=$sthA->rows;
		if ($sthArows > 0)
			{
			@aryA = $sthA->fetchrow_array;
			$ACTIVE_login = "$aryA[0]";
			}
		$sthA->finish();

		if ($ACTIVE_login < 1) 
			{
			if ($AGILOG) {$agi_string = "DIAL-IN END: Inactive Login   |$VALID_login|$PIN_number|$PASS_word|  |$ACTIVE_login|$PDtsSQLdate|";   &agi_output;}

			$AGI->stream_file('login-fail');
			$AGI->stream_file('you-must-be-logged-in');
			$AGI->stream_file('vm-goodbye');

			$AGI->hangup();

			$dbhA->disconnect();
			exit;
			}
		else
			{
			$stmtA = "SELECT conf_exten,extension,server_ip from vicidial_live_agents WHERE user='$PIN_number' limit 1;";
				if ($AGILOG) {$agi_string = "|$stmtA|";   &agi_output;}
			$sthA = $dbhA->prepare($stmtA) or die "preparing: ",$dbhA->errstr;
			$sthA->execute or die "executing: $stmtA ", $dbhA->errstr;
			$sthArows=$sthA->rows;
			$rec_countCUSTDATA=0;
				if ($sthArows > 0)
				{
				@aryA = $sthA->fetchrow_array;

				$VDADconf_exten	= "$aryA[0]";
				$VDADextension	= "$aryA[1]";
				$VDADserver_ip	= "$aryA[2]";
				}
			$sthA->finish();

			### format the remote server dialstring to get the call to the overflow agent meetme room
			$S='*';
			if( $VDADserver_ip =~ m/(\S+)\.(\S+)\.(\S+)\.(\S+)/ )
				{
				$a = leading_zero($1); 
				$b = leading_zero($2); 
				$c = leading_zero($3); 
				$d = leading_zero($4);
				$VDADremDIALstr = "$a$S$b$S$c$S$d$S";
				}
			$VDADremDIALstr .= "$VDADconf_exten";

			if ($AGILOG) {$agi_string = "Agent $PIN_number sent to $VDADremDIALstr";   &agi_output;}

			print "SET CONTEXT $ext_context\n";
				$result = <STDIN>;
				checkresult($result);
			print "SET EXTENSION $VDADremDIALstr\n";
				$result = <STDIN>;
				checkresult($result);
			print "SET PRIORITY 1\n";
				$result = <STDIN>;
				checkresult($result);
			}
		}
	}



$dbhA->disconnect();

exit;





################################################################################
##### SUBROUTINES ##############################################################
################################################################################


##### BEGIN collect the user and password ######################################
sub user_password_gather
	{
	################################################################################
	# please enter the pin number followed by the pound key

	$interrupt_digit='';

	$interrupt_digit = $AGI->stream_file('ld_welcome_pin_number','0123456789');   

		print STDERR "interrupt_digit |$interrupt_digit|\n";

	$digits_being_entered=1;
	$PIN_number='';
	if ($interrupt_digit > 0)
		{
	#	if ($interrupt_digit == 35) {$interrupt_digit='#';}
	#	if ($interrupt_digit == 42) {$interrupt_digit='*';}
		if ($interrupt_digit == 48) {$interrupt_digit=0;}
		if ($interrupt_digit == 49) {$interrupt_digit=1;}
		if ($interrupt_digit == 50) {$interrupt_digit=2;}
		if ($interrupt_digit == 51) {$interrupt_digit=3;}
		if ($interrupt_digit == 52) {$interrupt_digit=4;}
		if ($interrupt_digit == 53) {$interrupt_digit=5;}
		if ($interrupt_digit == 54) {$interrupt_digit=6;}
		if ($interrupt_digit == 55) {$interrupt_digit=7;}
		if ($interrupt_digit == 56) {$interrupt_digit=8;}
		if ($interrupt_digit == 57) {$interrupt_digit=9;}
		
		$PIN_number=$interrupt_digit;
		}

	$digit_loop_counter=0;
	while ( ($digits_being_entered > 0) && ($digit_loop_counter < 20) )
		{
		$digit = chr($AGI->wait_for_digit('10000'));  # wait 10 seconds for input or until the pound key is pressed
		if ($digit =~ /\d/)
			{
			$PIN_number = "$PIN_number$digit";
			print STDERR "digit |$digit|     PIN_number |$PIN_number|\n";
	#		$AGI->say_digits("$digit");
			undef $digit;
			}
		else
			{
			$digits_being_entered=0;
			}
		
		$digit_loop_counter++;
		}

	$PIN_number =~ s/\D//gi;
	if ($PIN_number) {print STDERR "digit |$digit|     PIN_number |$PIN_number|\n";}


	if ($user_id_only !~ /Y|CONTACT/)
		{
		################################################################################
		# please enter your password followed by the pound key

		$interrupt_digit='';

		$interrupt_digit = $AGI->stream_file('enter-password','0123456789');   

			print STDERR "interrupt_digit |$interrupt_digit|\n";

		$digits_being_entered=1;
		$PASS_word='';
		if ($interrupt_digit > 0)
			{
		#	if ($interrupt_digit == 35) {$interrupt_digit='#';}
		#	if ($interrupt_digit == 42) {$interrupt_digit='*';}
			if ($interrupt_digit == 48) {$interrupt_digit=0;}
			if ($interrupt_digit == 49) {$interrupt_digit=1;}
			if ($interrupt_digit == 50) {$interrupt_digit=2;}
			if ($interrupt_digit == 51) {$interrupt_digit=3;}
			if ($interrupt_digit == 52) {$interrupt_digit=4;}
			if ($interrupt_digit == 53) {$interrupt_digit=5;}
			if ($interrupt_digit == 54) {$interrupt_digit=6;}
			if ($interrupt_digit == 55) {$interrupt_digit=7;}
			if ($interrupt_digit == 56) {$interrupt_digit=8;}
			if ($interrupt_digit == 57) {$interrupt_digit=9;}
			
			$PASS_word=$interrupt_digit;
			}

		$digit_loop_counter=0;
		while ( ($digits_being_entered > 0) && ($digit_loop_counter < 20) )
			{
			$digit = chr($AGI->wait_for_digit('10000'));  # wait 10 seconds for input or until the pound key is pressed
			if ($digit =~ /\d/)
				{
				$PASS_word = "$PASS_word$digit";
				print STDERR "digit |$digit|     PASS_word |$PASS_word|\n";
		#		$AGI->say_digits("$digit");
				undef $digit;
				}
			else
				{
				$digits_being_entered=0;
				}
			
			$digit_loop_counter++;
			}

		$PASS_word =~ s/\D//gi;
		if ($PASS_word) {print STDERR "digit |$digit|     PASS_word |$PASS_word| PIN_number |$PIN_number|\n";}
		}
	}
##### END collect the user and password ###############################################




##### SUBROUTINES #####

sub get_time_now	#get the current date and time and epoch for logging call lengths and datetimes
	{
	($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
	$year = ($year + 1900);
	$mon++;
	if ($mon < 10) {$mon = "0$mon";}
	if ($mday < 10) {$mday = "0$mday";}
	if ($hour < 10) {$hour = "0$hour";}
	if ($min < 10) {$min = "0$min";}
	if ($sec < 10) {$sec = "0$sec";}

	$now_date_epoch = time();
	$now_date = "$year-$mon-$mday $hour:$min:$sec";
	$filedate = "$year$mon$mday$hour$min$sec";
	}



sub checkresult 
	{
	my ($res) = @_;
	my $retval;
	$tests++;
	chomp $res;
	if ($res =~ /^200/) {
		$res =~ /result=(-?\d+)/;
		if (!length($1)) 
			{
			print STDERR "FAIL ($res)\n";
			$fail++;
			} 
		else 
			{
			print STDERR "PASS ($1)\n";
			$pass++;
			}
		} 
	else 
		{
		print STDERR "FAIL (unexpected result '$res')\n";
		$fail++;
		}
	}

sub agi_output
	{
	if ($AGILOG >=2)
		{
		### open the log file for writing ###
		open(Lout, ">>$AGILOGfile")
				|| die "Can't open $AGILOGfile: $!\n";
		print Lout "$now_date|$script|$agi_string\n";
		close(Lout);
		}
		### send to STDERR writing ###
	if ( ($AGILOG == '1') || ($AGILOG == '3') )
		{print STDERR "$now_date|$script|$agi_string\n";}
	$agi_string='';
	}

sub leading_zero($) 
	{
	$_ = $_[0];
	s/^(\d)$/0$1/;
	s/^(\d\d)$/0$1/;
	return $_;
	} # End of the leading_zero() routine.