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341 lines
8.8 KiB
341 lines
8.8 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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/*
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* Usage: client_upcall remote_addr remote_port [local_port] [local_encaps_port] [remote_encaps_port]
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*/
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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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#if !defined(_WIN32)
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#include <unistd.h>
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#include <sys/time.h>
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#endif /* !defined(_WIN32) */
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#include <sys/types.h>
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#if !defined(_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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#else /* !defined(_WIN32) */
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#include <io.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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#include <fcntl.h>
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#define BUFFERSIZE (1<<16)
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int done = 0, input_done = 0, connected = 0;
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#ifdef _WIN32
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typedef char* caddr_t;
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#endif
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int inputAvailable(void)
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{
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struct timeval tv;
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fd_set fds;
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tv.tv_sec = 0;
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tv.tv_usec = 0;
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FD_ZERO(&fds);
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#if defined(_WIN32) && !defined(__MINGW32__)
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FD_SET(_fileno(stdin), &fds);
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select(_fileno(stdin) + 1, &fds, NULL, NULL, &tv);
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#else
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FD_SET(STDIN_FILENO, &fds);
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select(STDIN_FILENO+1, &fds, NULL, NULL, &tv);
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#endif
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return (FD_ISSET(0, &fds));
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}
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static void
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handle_upcall(struct socket *sock, void *arg, int flgs)
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{
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int events = usrsctp_get_events(sock);
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if (events & SCTP_EVENT_WRITE && !done && !connected) {
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connected = 1;
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printf("socket connected\n");
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return;
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}
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while (events & SCTP_EVENT_READ && !done && connected) {
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struct sctp_recvv_rn rn;
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ssize_t n;
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struct sockaddr_in addr;
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char *buf = calloc(1, BUFFERSIZE);
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int flags = 0;
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socklen_t len = (socklen_t)sizeof(struct sockaddr_in);
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unsigned int infotype = 0;
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socklen_t infolen = sizeof(struct sctp_recvv_rn);
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memset(&rn, 0, sizeof(struct sctp_recvv_rn));
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n = usrsctp_recvv(sock, buf, BUFFERSIZE, (struct sockaddr *) &addr, &len, (void *)&rn,
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&infolen, &infotype, &flags);
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if (n > 0) {
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#ifdef _WIN32
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_write(_fileno(stdout), buf, (unsigned int)n);
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#else
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if (write(fileno(stdout), buf, n) < 0) {
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perror("write");
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}
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#endif
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} else if (n == 0) {
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done = 1;
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input_done = 1;
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free(buf);
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break;
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} else {
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perror("\nusrsctp_recvv");
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free (buf);
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break;
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}
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free(buf);
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events = usrsctp_get_events(sock);
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}
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return;
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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 socket *sock;
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struct sockaddr *addr, *addrs;
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struct sockaddr_in addr4;
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struct sockaddr_in6 addr6;
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struct sctp_udpencaps encaps;
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struct sctpstat stat;
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char buffer[200];
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int i, n;
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if (argc > 4) {
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usrsctp_init(atoi(argv[4]), NULL, debug_printf_stack);
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} else {
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usrsctp_init(9899, NULL, debug_printf_stack);
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}
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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_blackhole(2);
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usrsctp_sysctl_set_sctp_no_csum_on_loopback(0);
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if ((sock = usrsctp_socket(AF_INET6, SOCK_STREAM, IPPROTO_SCTP, NULL, NULL, 0, NULL)) == NULL) {
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perror("usrsctp_socket");
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exit(1);
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}
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usrsctp_set_non_blocking(sock, 1);
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if (argc > 3) {
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memset((void *)&addr6, 0, sizeof(struct sockaddr_in6));
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#ifdef HAVE_SIN6_LEN
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addr6.sin6_len = sizeof(struct sockaddr_in6);
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#endif
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addr6.sin6_family = AF_INET6;
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addr6.sin6_port = htons(atoi(argv[3]));
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addr6.sin6_addr = in6addr_any;
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if (usrsctp_bind(sock, (struct sockaddr *)&addr6, sizeof(struct sockaddr_in6)) < 0) {
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perror("bind");
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usrsctp_close(sock);
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exit(1);
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}
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}
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if (argc > 5) {
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memset(&encaps, 0, sizeof(struct sctp_udpencaps));
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encaps.sue_address.ss_family = AF_INET6;
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encaps.sue_port = htons(atoi(argv[5]));
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if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_REMOTE_UDP_ENCAPS_PORT, (const void*)&encaps, (socklen_t)sizeof(struct sctp_udpencaps)) < 0) {
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perror("setsockopt");
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usrsctp_close(sock);
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exit(1);
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}
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}
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memset((void *)&addr4, 0, sizeof(struct sockaddr_in));
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memset((void *)&addr6, 0, sizeof(struct sockaddr_in6));
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#ifdef HAVE_SIN_LEN
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addr4.sin_len = sizeof(struct sockaddr_in);
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#endif
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#ifdef HAVE_SIN6_LEN
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addr6.sin6_len = sizeof(struct sockaddr_in6);
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#endif
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addr4.sin_family = AF_INET;
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addr6.sin6_family = AF_INET6;
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addr4.sin_port = htons(atoi(argv[2]));
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addr6.sin6_port = htons(atoi(argv[2]));
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if (inet_pton(AF_INET6, argv[1], &addr6.sin6_addr) == 1) {
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if (usrsctp_connect(sock, (struct sockaddr *)&addr6, sizeof(struct sockaddr_in6)) < 0) {
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perror("usrsctp_connect");
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}
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} else if (inet_pton(AF_INET, argv[1], &addr4.sin_addr) == 1) {
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if (usrsctp_connect(sock, (struct sockaddr *)&addr4, sizeof(struct sockaddr_in)) < 0) {
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perror("usrsctp_connect");
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}
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} else {
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printf("Illegal destination address.\n");
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}
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usrsctp_set_upcall(sock, handle_upcall, NULL);
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if ((n = usrsctp_getladdrs(sock, 0, &addrs)) < 0) {
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perror("usrsctp_getladdrs");
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} else {
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addr = addrs;
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printf("Local addresses: ");
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for (i = 0; i < n; i++) {
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if (i > 0) {
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printf("%s", ", ");
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}
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switch (addr->sa_family) {
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case AF_INET:
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{
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struct sockaddr_in *sin;
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char buf[INET_ADDRSTRLEN];
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const char *name;
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sin = (struct sockaddr_in *)addr;
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name = inet_ntop(AF_INET, &sin->sin_addr, buf, INET_ADDRSTRLEN);
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printf("%s", name);
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#ifndef HAVE_SA_LEN
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addr = (struct sockaddr *)((caddr_t)addr + sizeof(struct sockaddr_in));
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#endif
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break;
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}
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case AF_INET6:
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{
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struct sockaddr_in6 *sin6;
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char buf[INET6_ADDRSTRLEN];
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const char *name;
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sin6 = (struct sockaddr_in6 *)addr;
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name = inet_ntop(AF_INET6, &sin6->sin6_addr, buf, INET6_ADDRSTRLEN);
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printf("%s", name);
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#ifndef HAVE_SA_LEN
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addr = (struct sockaddr *)((caddr_t)addr + sizeof(struct sockaddr_in6));
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#endif
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break;
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}
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default:
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break;
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}
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#ifdef HAVE_SA_LEN
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addr = (struct sockaddr *)((caddr_t)addr + addr->sa_len);
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#endif
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}
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printf(".\n");
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usrsctp_freeladdrs(addrs);
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}
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if ((n = usrsctp_getpaddrs(sock, 0, &addrs)) < 0) {
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perror("usrsctp_getpaddrs");
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} else {
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addr = addrs;
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printf("Peer addresses: ");
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for (i = 0; i < n; i++) {
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if (i > 0) {
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printf("%s", ", ");
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}
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switch (addr->sa_family) {
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case AF_INET:
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{
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struct sockaddr_in *sin;
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char buf[INET_ADDRSTRLEN];
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const char *name;
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sin = (struct sockaddr_in *)addr;
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name = inet_ntop(AF_INET, &sin->sin_addr, buf, INET_ADDRSTRLEN);
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printf("%s", name);
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#ifndef HAVE_SA_LEN
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addr = (struct sockaddr *)((caddr_t)addr + sizeof(struct sockaddr_in));
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#endif
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break;
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}
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case AF_INET6:
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{
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struct sockaddr_in6 *sin6;
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char buf[INET6_ADDRSTRLEN];
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const char *name;
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sin6 = (struct sockaddr_in6 *)addr;
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name = inet_ntop(AF_INET6, &sin6->sin6_addr, buf, INET6_ADDRSTRLEN);
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printf("%s", name);
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#ifndef HAVE_SA_LEN
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addr = (struct sockaddr *)((caddr_t)addr + sizeof(struct sockaddr_in6));
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#endif
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break;
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}
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default:
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break;
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}
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#ifdef HAVE_SA_LEN
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addr = (struct sockaddr *)((caddr_t)addr + addr->sa_len);
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#endif
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}
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printf(".\n");
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usrsctp_freepaddrs(addrs);
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}
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while (!done && !input_done) {
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if (inputAvailable()) {
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if (fgets(buffer, sizeof(buffer), stdin) != NULL) {
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buffer[strlen(buffer)] = '\0';
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usrsctp_sendv(sock, buffer, strlen(buffer), NULL, 0, NULL, 0, SCTP_SENDV_NOINFO, 0);
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} else {
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if (usrsctp_shutdown(sock, SHUT_WR) < 0) {
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perror("usrsctp_shutdown");
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}
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break;
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}
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}
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}
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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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usrsctp_close(sock);
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usrsctp_get_stat(&stat);
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printf("Number of packets (sent/received): (%u/%u).\n",
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stat.sctps_outpackets, stat.sctps_inpackets);
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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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printf("Client finished\n");
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return(0);
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}
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