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#!/usr/bin/perl -w
# Copyright 2012 Thomas Glanzmann <thomas@glanzmann.de>
# based on POE: Cookbook - UNIX Servers example server writen by James March
use strict;
use warnings FATAL => 'all';
use POE;
use POE::Wheel::SocketFactory;
use POE::Wheel::ReadWrite;
# If e-mail is specified, an e-mail will be send to the user.
# If mobile is specified, an SMS will be send to the user.
my %users = (
'Administrator' => { email => 'devnull@binary.net', mobile => '49176xxx' },
);
my $otp_lifetime = 600;
my $sipgateurl = 'https://login:password@samurai.sipgate.net/RPC2';
my %tokens;
my %sessions;
my $OKAY = "OK\0\n";
my $FAILED = "FAILED\0\n";
Server::spawn('/var/run/smsotp_socket');
$poe_kernel->run();
exit 0;
package Server;
use POE::Session;
use Socket;
sub
spawn
{
my $rendezvous = shift;
POE::Session->create(
inline_states => {
_start => \&server_started,
got_client => \&server_accepted,
got_error => \&server_error,
},
heap => {rendezvous => $rendezvous,},
);
}
sub
server_started
{
my ($kernel, $heap) = @_[KERNEL, HEAP];
unlink $heap->{rendezvous} if -e $heap->{rendezvous};
$heap->{server} = POE::Wheel::SocketFactory->new(
SocketDomain => PF_UNIX,
BindAddress => $heap->{rendezvous},
SuccessEvent => 'got_client',
FailureEvent => 'got_error',
);
}
sub
server_error
{
my ($heap, $syscall, $errno, $error) = @_[HEAP, ARG0 .. ARG2];
$error = "Normal disconnection." unless $errno;
warn "Server socket encountered $syscall error $errno: $error\n";
delete $heap->{server};
}
sub
server_accepted
{
my $client_socket = $_[ARG0];
ServerSession::spawn($client_socket);
}
package ServerSession;
use POE::Session;
use Mail::Mailer;
use Frontier::Client;
sub
spawn
{
my $socket = shift;
POE::Session->create(
inline_states => {
_start => \&server_session_start,
got_client_input => \&server_session_input,
got_client_error => \&server_session_error,
},
args => [$socket],
);
}
sub
server_session_start
{
my ($heap, $socket) = @_[HEAP, ARG0];
$heap->{client} = POE::Wheel::ReadWrite->new(
Handle => $socket,
InputEvent => 'got_client_input',
ErrorEvent => 'got_client_error',
);
$heap->{client}->put("HELLO\0\n");
}
sub
send_email
{
my %args = @_;
my $mailer = Mail::Mailer->new('sendmail');
$mailer->open({
From => 'otp@glanzmann.de',
To => $args{to},
Subject => "One time password",
});
print $mailer $args{otp};
$mailer->close();
}
sub
send_sms
{
my %args = @_;
my $xmlrpc_client = Frontier::Client->new('url' => $sipgateurl);
my $xmlrpc_result = $xmlrpc_client->call("samurai.ClientIdentify", {
ClientName => 'sipgateAPI-sms.pl',
ClientVersion => '1.0',
ClientVendor => 'indigo networks GmbH'
});
if ($xmlrpc_result->{'StatusCode'} != 200) {
return; # catch error
}
$xmlrpc_result = $xmlrpc_client->call("samurai.SessionInitiate", {RemoteUri => "sip:$args{to}\@sipgate.net", TOS => "text", Content => $args{otp}});
if ($xmlrpc_result->{'StatusCode'} != 200) {
return; # catch error
}
}
sub
reply_ok
{
my $session = shift || die;
return 0 unless exists($sessions{$session}->{user});
return 0 unless exists($sessions{$session}->{otp});
return 0 unless exists($sessions{$session}->{id});
return 0 unless exists($tokens{$sessions{$session}->{user}}->{id});
return 0 unless exists($tokens{$sessions{$session}->{user}}->{otp});
return 0 unless exists($tokens{$sessions{$session}->{user}}->{time});
return 0 unless ($sessions{$session}->{otp} eq $tokens{$sessions{$session}->{user}}->{otp});
return 0 unless ($sessions{$session}->{id} eq $tokens{$sessions{$session}->{user}}->{id});
return 0 unless ((time() - $tokens{$sessions{$session}->{user}}->{time}) < $otp_lifetime);
return 1;
}
sub
server_session_input
{
my ($session, $heap, $input) = @_[SESSION, HEAP, ARG0];
if ($input =~ /^generate otp for ([\w\d]+)/) {
my $user = $1;
if (exists($users{$user})) {
$tokens{$user}->{id} = int(1 + rand(9999999999));
$tokens{$user}->{otp} = sprintf("%05d", int(1 + rand(99999)));
$tokens{$user}->{time} = time;
if (exists($users{$user}->{email})) {
send_email(to => $users{$user}->{email}, otp => $tokens{$user}->{otp});
}
if (exists($users{$user}->{mobile})) {
send_sms(to => $users{$user}->{mobile}, otp => $tokens{$user}->{otp});
}
$heap->{client}->put($tokens{$user}->{id} . "\0\n");
} else {
$heap->{client}->put($FAILED);
}
} elsif ($input =~ /^check otp for ([\w\d]+)/) {
$sessions{$session}->{user} = $1;
$heap->{client}->put($OKAY);
} elsif ($input =~ /^user otp is ([\w\d]+)/) {
$sessions{$session}->{otp} = $1;
$heap->{client}->put($OKAY);
} elsif ($input =~ /^otp id is ([\w\d_-]+)/) {
$sessions{$session}->{id} = $1;
$heap->{client}->put($OKAY);
} elsif ($input =~ /^get check result/) {
if (reply_ok($session)) {
$heap->{client}->put($OKAY);
} else {
$heap->{client}->put($FAILED);
}
delete($tokens{$sessions{$session}->{user}});
delete ($sessions{$session});
} elsif ($input =~ /^quit/) {
$heap->{client}->put($OKAY);
delete ($sessions{$session});
delete $heap->{client};
} else {
$heap->{client}->put($FAILED);
}
}
sub
server_session_error
{
my ($heap, $syscall, $errno, $error) = @_[HEAP, ARG0 .. ARG2];
$error = "Normal disconnection." unless $errno;
warn "Server session encountered $syscall error $errno: $error\n";
delete $heap->{client};
}
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