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#!/usr/bin/perl -w
#
# Simple Asterisk Manager Proxy, Version 1.01
# 2004-09-26
# Copyright (c) 2004 David C. Troy <dave@popvox.com>
#
# This code is based on Flash Operator Panel 'op_server.pl'
# by Nicolas Gudino
# Copyright (C) 2004.
#
# David C. Troy <dave@popvox.com>
# Nicolas Gudino <nicolas@house.com.ar>
#
# This program is free software, distributed under the terms of
# the GNU General Public License.
#
# Security consideration: This script will open your manager port
# for unauthenticated logins. Be careful out there :-)
#############################
#############################
# Perl Prerequisites
#############################
use strict;
use IO::Socket;
use IO::Select;
use POSIX qw(setsid);
#############################
# User Configurable Options
#############################
# Configuration for logging in to your asterisk server
# Check you Asterisk config file "manager.conf" for details
my $manager_host = '127.0.0.1';
my $manager_port = 5038;
my $manager_user = 'your_username';
my $manager_secret = 'your_secret';
# Port For this proxy
my $listen_port = 1234;
my $manager_pid = "/var/run/asterisk_managerproxy.pid";
#############################
# Declarations
#############################
my %proxy_clients;
my $O;
my $p;
my @S;
my %blocks;
my $debug = 0;
$SIG{PIPE} = 'IGNORE';
$SIG{INT} = 'close_all';
$SIG{USR1} = 'list_clients';
if (defined($ARGV[0]))
{
if ($ARGV[0] eq "-d")
{
defined(my $pid = fork) or die "Can't Fork: $!";
exit if $pid;
setsid or die "Can't start a new session: $!";
open MYPIDFILE, ">$manager_pid";
print MYPIDFILE $$;
close MYPIDFILE;
}
} else {
$debug = 1;
}
# Connect to manager
$p =
new IO::Socket::INET->new(
PeerAddr => $manager_host,
PeerPort => $manager_port,
Proto => "tcp",
Type => SOCK_STREAM
)
or die "\nCould not connect to Asterisk Manager Port at $manager_host\n";
$p->autoflush(1);
# Login to Manager
send_command_to_manager( "Action: Login\r\nUsername: $manager_user\r\nSecret: $manager_secret\r\n\r\n" );
# Start up listener for new connections
my $m =
new IO::Socket::INET(Listen => 1, LocalPort => $listen_port, ReuseAddr => 1)
or die "\nCan't listen to port $listen_port\n";
$O = new IO::Select();
$O->add($m);
$O->add($p);
$/ = "\0";
sub manager_reconnect()
{
my $attempt = 1;
my $total_attempts = 60;
do
{
log_debug("** Attempt reconnection to manager port # $attempt", 16);
$p =
new IO::Socket::INET->new(
PeerAddr => $manager_host,
PeerPort => $manager_port,
Proto => "tcp",
Type => SOCK_STREAM
);
$attempt++;
if ($attempt > $total_attempts)
{
die("!! Could not reconnect to Asterisk Manager port");
}
sleep(10); # wait 10 seconds before trying to reconnect
} until $p;
$O->add($p);
send_command_to_manager(
"Action: Login\r\nUsername: $manager_user\r\nSecret: $manager_secret\r\n\r\n"
);
}
# Loop, continuously processing new connections, input from those connections, and input from Manager conn
while (1)
{
while (@S = $O->can_read)
{
foreach (@S)
{
if ($_ == $m)
{
log_debug("** New client connection", 16);
my $C = $m->accept;
$proxy_clients{$C} = \$C;
print "New Connection: $C\n" if $debug;
$O->add($C);
} else {
# It's not a new client connection
my $i;
my $R = sysread($_, $i, 2); # 2048; interleave every two bytes?
if (defined($R) && $R == 0)
{
# Confirm it's really dead by trying to write to it?
my $T = syswrite($_, ' ', 2); # 2048
if (!defined($T))
{
# connection went away...
$O->remove($_);
$_->close;
# If we lost the socket for the Asterisk Mgr, then reconnect
if ($_ == $p)
{
log_debug(
"** Asterisk Manager connection lost!!!!!",
16);
manager_reconnect();
} else {
# Remove handle from proxy_clients hash
print "Closed Connection: $_\n" if $debug;
delete $proxy_clients{$_};
}
}
}
else # Socket is active and we are ready to read something from it
{
$blocks{$_} .= $i;
next if ($blocks{$_} !~ /\r\n\r\n$/);
# do a 'next' unless we have completed a block; we are not ready to continue
# Process the completed block
# If block is from asterisk, send to clients
if ($_ == $p) {
# block is from asterisk, send to clients
print "asterisk: $_\n$blocks{$_}" if $debug;
my $cnt = 0;
foreach my $client (values %proxy_clients) {
print "writing to $$client...\n" if $debug;
syswrite($$client, $blocks{$_});
$cnt++;
}
print "sent block to $cnt clients\n" if $debug;
} else {
# Blocks are from clients, send to asterisk
syswrite($p, $blocks{$_});
print "client: $_\n$blocks{$_}\n" if $debug;
}
delete $blocks{$_};
} # end if read succeeded
} # end if new client connection
} # end foreach @S -> can read
} # while can read
} # endless loop
sub close_all
{
log_debug("Exiting...", 0);
foreach my $hd ($O->handles)
{
$O->remove($hd);
close($hd);
}
exit(0);
}
sub send_command_to_manager
{
my $comando = shift;
if (defined $p)
{
my @lineas = split("\r\n", $comando);
foreach my $linea (@lineas)
{
syswrite($p, "$linea\r\n");
log_debug("-> $linea", 2);
}
log_debug(" ", 2);
syswrite($p, "\r\n");
}
}
sub log_debug
{
my $texto = shift;
$texto =~ s/\0//g;
print "$texto\n" if $debug;
}
sub list_clients()
{
my $cnt = 0;
foreach my $client (values %proxy_clients) {
print "client: $$client\n";
$cnt++;
}
print "$cnt clients.\n\n";
}
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