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320 lines
8.2 KiB
320 lines
8.2 KiB
/*
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* Copyright (C) 2011-2013 Michael Tuexen
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef _WIN32
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#define _CRT_SECURE_NO_WARNINGS
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <sys/types.h>
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#ifndef _WIN32
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <errno.h>
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#include <pthread.h>
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#include <unistd.h>
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#else
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#endif
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#include <usrsctp.h>
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#include "programs_helper.h"
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#define MAX_PACKET_SIZE (1<<16)
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#define BUFFER_SIZE 80
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#define DISCARD_PPID 39
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#ifdef _WIN32
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static DWORD WINAPI
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#else
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static void *
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#endif
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handle_packets(void *arg)
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{
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#ifdef _WIN32
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SOCKET *fdp;
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#else
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int *fdp;
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#endif
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char *dump_buf;
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ssize_t length;
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char buf[MAX_PACKET_SIZE];
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#ifdef _WIN32
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fdp = (SOCKET *)arg;
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#else
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fdp = (int *)arg;
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#endif
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for (;;) {
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#if defined(__NetBSD__)
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pthread_testcancel();
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#endif
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length = recv(*fdp, buf, MAX_PACKET_SIZE, 0);
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if (length > 0) {
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if ((dump_buf = usrsctp_dumppacket(buf, (size_t)length, SCTP_DUMP_INBOUND)) != NULL) {
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fprintf(stderr, "%s", dump_buf);
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usrsctp_freedumpbuffer(dump_buf);
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}
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usrsctp_conninput(fdp, buf, (size_t)length, 0);
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}
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}
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#ifdef _WIN32
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return 0;
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#else
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return (NULL);
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#endif
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}
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static int
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conn_output(void *addr, void *buf, size_t length, uint8_t tos, uint8_t set_df)
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{
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char *dump_buf;
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#ifdef _WIN32
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SOCKET *fdp;
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#else
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int *fdp;
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#endif
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#ifdef _WIN32
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fdp = (SOCKET *)addr;
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#else
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fdp = (int *)addr;
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#endif
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if ((dump_buf = usrsctp_dumppacket(buf, length, SCTP_DUMP_OUTBOUND)) != NULL) {
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fprintf(stderr, "%s", dump_buf);
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usrsctp_freedumpbuffer(dump_buf);
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}
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#ifdef _WIN32
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if (send(*fdp, buf, (int)length, 0) == SOCKET_ERROR) {
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return (WSAGetLastError());
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#else
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if (send(*fdp, buf, length, 0) < 0) {
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return (errno);
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#endif
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} else {
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return (0);
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}
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}
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static int
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receive_cb(struct socket *sock, union sctp_sockstore addr, void *data,
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size_t datalen, struct sctp_rcvinfo rcv, int flags, void *ulp_info)
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{
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if (data) {
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if (flags & MSG_NOTIFICATION) {
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printf("Notification of length %d received.\n", (int)datalen);
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} else {
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printf("Msg of length %d received via %p:%u on stream %u with SSN %u and TSN %u, PPID %u, context %u.\n",
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(int)datalen,
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addr.sconn.sconn_addr,
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ntohs(addr.sconn.sconn_port),
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rcv.rcv_sid,
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rcv.rcv_ssn,
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rcv.rcv_tsn,
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ntohl(rcv.rcv_ppid),
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rcv.rcv_context);
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}
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free(data);
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} else {
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usrsctp_deregister_address(ulp_info);
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usrsctp_close(sock);
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}
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return (1);
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}
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int
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main(int argc, char *argv[])
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{
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struct sockaddr_in sin;
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struct sockaddr_conn sconn;
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#ifdef _WIN32
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SOCKET fd;
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#else
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int fd, rc;
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#endif
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struct socket *s;
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#ifdef _WIN32
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HANDLE tid;
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#else
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pthread_t tid;
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#endif
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struct sctp_sndinfo sndinfo;
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char buffer[BUFFER_SIZE];
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#ifdef _WIN32
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WSADATA wsaData;
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#endif
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if (argc < 4) {
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fprintf(stderr, "error: this program requires 4 arguments!\n");
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exit(EXIT_FAILURE);
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}
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#ifdef _WIN32
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if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
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fprintf(stderr, "WSAStartup failed\n");
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exit (EXIT_FAILURE);
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}
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#endif
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usrsctp_init(0, conn_output, debug_printf_stack);
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/* set up a connected UDP socket */
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#ifdef _WIN32
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if ((fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET) {
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fprintf(stderr, "socket() failed with error: %d\n", WSAGetLastError());
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exit(EXIT_FAILURE);
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}
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#else
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if ((fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
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perror("socket");
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exit(EXIT_FAILURE);
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}
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#endif
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memset(&sin, 0, sizeof(struct sockaddr_in));
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sin.sin_family = AF_INET;
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#ifdef HAVE_SIN_LEN
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sin.sin_len = sizeof(struct sockaddr_in);
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#endif
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sin.sin_port = htons(atoi(argv[2]));
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if (!inet_pton(AF_INET, argv[1], &sin.sin_addr.s_addr)){
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fprintf(stderr, "error: invalid address\n");
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exit(EXIT_FAILURE);
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}
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#ifdef _WIN32
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if (bind(fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
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fprintf(stderr, "bind() failed with error: %d\n", WSAGetLastError());
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exit(EXIT_FAILURE);
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}
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#else
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if (bind(fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) < 0) {
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perror("bind");
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exit(EXIT_FAILURE);
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}
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#endif
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memset(&sin, 0, sizeof(struct sockaddr_in));
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sin.sin_family = AF_INET;
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#ifdef HAVE_SIN_LEN
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sin.sin_len = sizeof(struct sockaddr_in);
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#endif
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sin.sin_port = htons(atoi(argv[4]));
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if (!inet_pton(AF_INET, argv[3], &sin.sin_addr.s_addr)){
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printf("error: invalid address\n");
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exit(EXIT_FAILURE);
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}
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#ifdef _WIN32
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if (connect(fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
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fprintf(stderr, "connect() failed with error: %d\n", WSAGetLastError());
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exit(EXIT_FAILURE);
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}
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#else
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if (connect(fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) < 0) {
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perror("connect");
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exit(EXIT_FAILURE);
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}
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#endif
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#ifdef SCTP_DEBUG
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usrsctp_sysctl_set_sctp_debug_on(SCTP_DEBUG_NONE);
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#endif
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usrsctp_sysctl_set_sctp_ecn_enable(0);
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usrsctp_register_address((void *)&fd);
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#ifdef _WIN32
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if ((tid = CreateThread(NULL, 0, &handle_packets, (void *)&fd, 0, NULL)) == NULL) {
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fprintf(stderr, "CreateThread() failed with error: %d\n", GetLastError());
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exit(EXIT_FAILURE);
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}
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#else
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if ((rc = pthread_create(&tid, NULL, &handle_packets, (void *)&fd)) != 0) {
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fprintf(stderr, "pthread_create: %s\n", strerror(rc));
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exit(EXIT_FAILURE);
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}
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#endif
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if ((s = usrsctp_socket(AF_CONN, SOCK_STREAM, IPPROTO_SCTP, receive_cb, NULL, 0, &fd)) == NULL) {
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perror("usrsctp_socket");
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}
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memset(&sconn, 0, sizeof(struct sockaddr_conn));
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sconn.sconn_family = AF_CONN;
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#ifdef HAVE_SCONN_LEN
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sconn.sconn_len = sizeof(struct sockaddr_conn);
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#endif
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sconn.sconn_port = htons(0);
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sconn.sconn_addr = NULL;
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if (usrsctp_bind(s, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn)) < 0) {
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perror("usrsctp_bind");
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}
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memset(&sconn, 0, sizeof(struct sockaddr_conn));
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sconn.sconn_family = AF_CONN;
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#ifdef HAVE_SCONN_LEN
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sconn.sconn_len = sizeof(struct sockaddr_conn);
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#endif
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sconn.sconn_port = htons(5001);
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sconn.sconn_addr = &fd;
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if (usrsctp_connect(s, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn)) < 0) {
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perror("usrsctp_connect");
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}
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memset(buffer, 'A', BUFFER_SIZE);
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sndinfo.snd_sid = 1;
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sndinfo.snd_flags = 0;
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sndinfo.snd_ppid = htonl(DISCARD_PPID);
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sndinfo.snd_context = 0;
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sndinfo.snd_assoc_id = 0;
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if (usrsctp_sendv(s, buffer, BUFFER_SIZE, NULL, 0, (void *)&sndinfo,
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(socklen_t)sizeof(struct sctp_sndinfo), SCTP_SENDV_SNDINFO, 0) < 0) {
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perror("usrsctp_sendv");
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}
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usrsctp_shutdown(s, SHUT_WR);
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while (usrsctp_finish() != 0) {
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#ifdef _WIN32
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Sleep(1000);
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#else
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sleep(1);
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#endif
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}
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#ifdef _WIN32
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TerminateThread(tid, 0);
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WaitForSingleObject(tid, INFINITE);
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if (closesocket(fd) == SOCKET_ERROR) {
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fprintf(stderr, "closesocket() failed with error: %d\n", WSAGetLastError());
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}
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WSACleanup();
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#else
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pthread_cancel(tid);
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pthread_join(tid, NULL);
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if (close(fd) < 0) {
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perror("close");
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}
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#endif
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return (0);
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}
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