1 /*
2 * Copyright (C) 2012-2013 Michael Tuexen
3 *
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the project nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 /*
32 * Usage: daytime_server_upcall [local_encaps_port] [remote_encaps_port]
33 */
34
35 #ifdef _WIN32
36 #define _CRT_SECURE_NO_WARNINGS
37 #endif
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <string.h>
41 #include <stdarg.h>
42 #include <sys/types.h>
43 #include <time.h>
44 #ifndef _WIN32
45 #include <unistd.h>
46 #include <sys/socket.h>
47 #include <netinet/in.h>
48 #include <arpa/inet.h>
49 #endif
50 #include <usrsctp.h>
51 #include "programs_helper.h"
52
53 #define DAYTIME_PPID 40
54 #define PORT 13
55
56 static void
handle_accept(struct socket * sock,void * data,int flags)57 handle_accept(struct socket *sock, void *data, int flags)
58 {
59 struct socket *conn_sock;
60 char buffer[80];
61 time_t now;
62 socklen_t addr_len = 0;
63 struct sctp_sndinfo sndinfo;
64
65 if (((conn_sock = usrsctp_accept(sock, NULL, &addr_len)) == NULL)
66 && (errno != EINPROGRESS)) {
67 perror("usrsctp_accept");
68 return;
69 }
70 time(&now);
71 #ifdef _WIN32
72 if (_snprintf(buffer, sizeof(buffer), "%s", ctime(&now)) < 0) {
73 #else
74 if (snprintf(buffer, sizeof(buffer), "%s", ctime(&now)) < 0) {
75 #endif
76 buffer[0] = '\0';
77 }
78 sndinfo.snd_sid = 0;
79 sndinfo.snd_flags = 0;
80 sndinfo.snd_ppid = htonl(DAYTIME_PPID);
81 sndinfo.snd_context = 0;
82 sndinfo.snd_assoc_id = 0;
83 usrsctp_sendv(conn_sock, buffer, strlen(buffer), NULL, 0, (void *)&sndinfo,
84 (socklen_t)sizeof(struct sctp_sndinfo), SCTP_SENDV_SNDINFO, 0);
85 usrsctp_close(conn_sock);
86 }
87
88 int
89 main(int argc, char *argv[])
90 {
91 struct socket *sock;
92 struct sockaddr_in addr;
93 struct sctp_udpencaps encaps;
94
95 if (argc > 1) {
96 usrsctp_init(atoi(argv[1]), NULL, debug_printf_stack);
97 } else {
98 usrsctp_init(9899, NULL, debug_printf_stack);
99 }
100 #ifdef SCTP_DEBUG
101 usrsctp_sysctl_set_sctp_debug_on(SCTP_DEBUG_NONE);
102 #endif
103 usrsctp_sysctl_set_sctp_blackhole(2);
104 usrsctp_sysctl_set_sctp_no_csum_on_loopback(0);
105
106 if ((sock = usrsctp_socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP, NULL, NULL, 0, NULL)) == NULL) {
107 perror("usrsctp_socket");
108 }
109 usrsctp_set_non_blocking(sock, 1);
110 if (argc > 2) {
111 memset(&encaps, 0, sizeof(struct sctp_udpencaps));
112 encaps.sue_address.ss_family = AF_INET;
113 encaps.sue_port = htons(atoi(argv[2]));
114 if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_REMOTE_UDP_ENCAPS_PORT, (const void*)&encaps, (socklen_t)sizeof(struct sctp_udpencaps)) < 0) {
115 perror("setsockopt");
116 }
117 }
118 memset((void *)&addr, 0, sizeof(struct sockaddr_in));
119 #ifdef HAVE_SIN_LEN
120 addr.sin_len = sizeof(struct sockaddr_in);
121 #endif
122 addr.sin_family = AF_INET;
123 addr.sin_port = htons(PORT);
124 addr.sin_addr.s_addr = htonl(INADDR_ANY);
125 if (usrsctp_bind(sock, (struct sockaddr *)&addr, sizeof(struct sockaddr_in)) < 0) {
126 perror("usrsctp_bind");
127 }
128 if (usrsctp_listen(sock, 1) < 0) {
129 perror("usrsctp_listen");
130 }
131
132 usrsctp_set_upcall(sock, handle_accept, NULL);
133
134 while (1) {
135 #ifdef _WIN32
136 Sleep(1*1000);
137 #else
138 sleep(1);
139 #endif
140 }
141 return (0);
142 }
143