sipudp2tcp.pl
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上传日期:2013-07-25
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- #!/usr/bin/perl
- # ====================================================================
- # The Vovida Software License, Version 1.0
- #
- # Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
- #
- # Redistribution and use in source and binary forms, with or without
- # modification, are permitted provided that the following conditions
- # are met:
- #
- # 1. Redistributions of source code must retain the above copyright
- # notice, this list of conditions and the following disclaimer.
- #
- # 2. Redistributions in binary form must reproduce the above copyright
- # notice, this list of conditions and the following disclaimer in
- # the documentation and/or other materials provided with the
- # distribution.
- #
- # 3. The names "VOCAL", "Vovida Open Communication Application Library",
- # and "Vovida Open Communication Application Library (VOCAL)" must
- # not be used to endorse or promote products derived from this
- # software without prior written permission. For written
- # permission, please contact vocal@vovida.org.
- #
- # 4. Products derived from this software may not be called "VOCAL", nor
- # may "VOCAL" appear in their name, without prior written
- # permission of Vovida Networks, Inc.
- #
- # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
- # WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- # OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
- # NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
- # NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
- # IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
- # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- # PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- # OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- # USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- # DAMAGE.
- #
- # ====================================================================
- #
- # This software consists of voluntary contributions made by Vovida
- # Networks, Inc. and many individuals on behalf of Vovida Networks,
- # Inc. For more information on Vovida Networks, Inc., please see
- # <http://www.vovida.org/>.
- # simple script to manage UDP to TCP for SIP connections
- use IO::Socket;
- #use LWP;
- use Socket;
- require "getopts.pl";
- &Getopts("p");
- if($opt_p) {
- $print = 1;
- }
- # multiplex based on To:, From:, and Call-Id:
- &mkudpsocket(5060, S1);
- #$tcp_socket = &create_connection("", 5060) || die "can't create connection to host: $!";
- print "nextn";
- while(1) {
- $rin = '';
- $max_fh = -1;
- vec($rin, fileno(S1), 1) = 1;
- vec($rin, fileno($tcp_socket), 1) = 1;
- print "wheel!n" if ($print);
- if(select($rin, undef, undef, undef)) {
- @bits = split(//, unpack("b*", $rin));
- undef($data);
- undef($new_data);
- print "inn" if ($print);
- if($bits[fileno(S1)]) {
- $his_address = &handle_udp(S1, $tcp_socket);
- }
- if($bits[fileno($tcp_socket)]) {
- &handle_tcp($tcp_socket, S1, $his_address);
- }
- }
- }
- sub handle_udp {
- my($udp_socket, $tcp_socket) = @_;
- my($his_address);
- my($data);
- print "handling udpn" if ($print);
- $his_address = recv($udp_socket, $data, 60000, 0);
- if($data) {
- if($print) {
- print "---------- UDP ----------n";
- print $data;
- print "---------- --- ----------n";
- }
- open(JUNK, ">junk.txt");
- print JUNK $data;
- close(JUNK);
- }
- &post_data_tcp($tcp_socket, $data);
- return $his_address;
- }
- sub handle_tcp {
- my($tcp_socket, $udp_socket, $udp_address) = @_;
- my($data);
- print "handling tcpn" if ($print);
- $data = &recv_data_tcp($tcp_socket);
- if($data) {
- if($print) {
- print "++++++++++ TCP ++++++++++n";
- print $data;
- print "---------- --- ----------n";
- }
- open(JUNK, ">junk.txt");
- print JUNK $data;
- close(JUNK);
- }
- # &post_data_udp($udp_socket, $data, $udp_address);
- }
- sub post_data_udp {
- my($socket, $data, $his_address) = @_;
- ($hisport, $hisiaddr) = sockaddr_in($his_address);
- $hishost = inet_ntoa($hisiaddr);
- print "returns: $hishost:$hisport:n----$datan----n" if ($print);
- ($sin) = pack_sockaddr_in(5060, $hisiaddr);
-
- # defined(send(S1,$return_data,0,$sin)) || die $!;
- defined(send($socket, $data, 0,$sin)) || die "send: $!";
- $them_S2 = pack($sockaddr,PF_INET, 5060, 192.168);
- print "returns: donen" if ($print);
- return;
- }
- sub recv_data_tcp {
- my($socket) = @_;
- my($headers) = "";
- my($body) = "";
- my($got_full_msg);
- my($msg);
- # wait for the appropriate line
- # message states:
- # 0 -- headers
- # 1 -- got all headers
- my($msg_state) = 0;
- my($buf);
- while(($msg_state == 0) && ($_ = <$socket>)) {
- $headers .= $_;
- if(/^s*$/) {
- $msg_state = 1;
- }
- }
- if(!$msg_state) {
- print "at eol: error!n";
- } else {
- if($print) {
- print "got headers!n";
- print "----------n";
- print $headers;
- print "----------n";
- }
- }
- # get the body if there's still data
- # get content-length
- my($body_length) = 0;
- if($headers =~ /(^|[rn])content-length:s*([0-9]+)/i) {
- print $2, "n" if ($print);
- $body_length = $2;
- } elsif ($headers =~ /(^|[rn])l:s*([0-9]+)/i) {
- print $2, "n" if($print);
- $body_length = $2;
- }
- print "TCP: getting $body_length bytes of bodyn" if($print);
- my($bytes_to_read) = $body_length;
- my($actual_bytes_read);
- while($bytes_to_read) {
- $actual_bytes_read = read($socket, $data, $bytes_to_read);
- if(!$actual_bytes_read) {
- print "no bytes in body: error!n";
- $bytes_to_read = 0;
- } else {
- $bytes_to_read = $bytes_to_read - $actual_bytes_read;
- }
- }
- $body = $data;
- if($print) {
- print "got body!n";
- print "----------n";
- print $body;
- print "----------n";
- }
- $msg = $headers . $body;
- return $msg;
- }
- # usage $socket = create_connection("hostname", port);
- sub create_connection {
- my($addr, $port) = @_;
- my($remote);
- $remote = IO::Socket::INET->new( Proto => "tcp",
- PeerAddr => $addr,
- PeerPort => $port,
- );
- return ($remote);
- }
- sub post_data_tcp {
- my($socket, $request) = @_;
- if($print) {
- print "TCP:n";
- print "----n$requestn----n";
- print "sending: startn";
- }
- if($socket) {
- my($bytes) = print $socket $request;
- }
- if(!$bytes) {
- # print "write error: $!n";
- } else {
- print "bytes written: $bytesn" if ($print);
- }
- print "sending: donen" if($print);
- }
- sub mkudpsocket {
- local($port, $socket) = @_;
-
- ($name,$aliases,$proto) = getprotobyname('udp');
- socket($socket, PF_INET, SOCK_DGRAM, $proto) || die "socket: $!";
- $paddr = sockaddr_in($port, INADDR_ANY); # 0 means let kernel pick
- bind($socket , $paddr) || die "died with port $port $!";
-
- }