1 /*
2 * Demo for libcoap on lwIP
3 *
4 * partially copied from lwip-contrib/ports/unix/proj/minimal/main.c
5 *
6 *
7 * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without modification,
11 * are permitted provided that the following conditions are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright notice,
14 * this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
24 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
26 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
29 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
30 * OF SUCH DAMAGE.
31 *
32 * Author: Adam Dunkels <adam@sics.se>
33 * RT timer modifications by Christiaan Simons
34 * lwip adaptions: chrysn <chrysn@fsfe.org>
35 * also, https://savannah.nongnu.org/bugs/?40245 was applied */
36
37 #include "server-coap.h"
38
39 #include <lwip/init.h>
40 #include <lwip/timeouts.h>
41
42 #include <netif/etharp.h>
43 #include <netif/tapif.h>
44
45 #include <signal.h>
46
47 #if LWIP_IPV4
48 static ip4_addr_t ipaddr, netmask, gw;
49 #endif /* LWIP_IPV4 */
50
51 void
handle_sigint(int signum)52 handle_sigint(int signum) {
53 (void)signum;
54
55 server_coap_finished();
56 printf("Server Application finished.\n");
57 exit(0);
58 }
59
60 /*
61 * This function is called internally by coap_io_process() to check
62 * for input.
63 */
64 static int
wait_for_input(void * arg,uint32_t milli_secs)65 wait_for_input(void *arg, uint32_t milli_secs) {
66 struct netif *netif = (struct netif *)arg;
67 int ret;
68
69 (void)milli_secs;
70 ret = tapif_select(netif);
71
72 sys_check_timeouts();
73 return ret;
74 }
75
76 int
main(int argc,char ** argv)77 main(int argc, char **argv) {
78 struct netif netif;
79 #ifndef _WIN32
80 struct sigaction sa;
81 #endif
82
83 /* startup defaults (may be overridden by one or more opts). this is
84 * hard-coded v4 even in presence of v6, which does auto-discovery and
85 * should thus wind up with an address of fe80::12:34ff:fe56:78ab%tap0
86 * */
87 #if LWIP_IPV4
88 IP4_ADDR(&gw, 192,168,113,1);
89 IP4_ADDR(&ipaddr, 192,168,113,2);
90 IP4_ADDR(&netmask, 255,255,255,0);
91 #endif /* LWIP_IPV4 */
92
93 lwip_init();
94
95 printf("TCP/IP initialized.\n");
96
97 #if LWIP_IPV4
98 netif_add(&netif, &ipaddr, &netmask, &gw, NULL, tapif_init, ethernet_input);
99 #endif /* LWIP_IPV4 */
100 netif.flags |= NETIF_FLAG_ETHARP;
101 netif_set_default(&netif);
102 netif_set_up(&netif);
103 #if LWIP_IPV4
104 printf("IP4 %s\n", ip4addr_ntoa(ip_2_ip4(&netif.ip_addr)));
105 #endif /* LWIP_IPV4 */
106 #if LWIP_IPV6
107 netif_create_ip6_linklocal_address(&netif, 1);
108 #if LWIP_IPV4
109 printf("IP6 [%s]\n", ip6addr_ntoa(&netif.ip6_addr[0].u_addr.ip6));
110 #else /* ! LWIP_IPV4 */
111 printf("IP6 [%s]\n", ip6addr_ntoa(&netif.ip6_addr[0].addr));
112 #endif /* ! LWIP_IPV4 */
113 #endif /* LWIP_IPV6 */
114
115 /* start applications here */
116
117 #ifdef _WIN32
118 signal(SIGINT, handle_sigint);
119 #else
120 memset(&sa, 0, sizeof(sa));
121 sigemptyset(&sa.sa_mask);
122 sa.sa_handler = handle_sigint;
123 sa.sa_flags = 0;
124 sigaction(SIGINT, &sa, NULL);
125 sigaction(SIGTERM, &sa, NULL);
126 /* So we do not exit on a SIGPIPE */
127 sa.sa_handler = SIG_IGN;
128 sigaction(SIGPIPE, &sa, NULL);
129 #endif
130
131 server_coap_init(wait_for_input, &netif, argc, argv);
132
133 printf("Server Application started.\n");
134
135 while (1) {
136 /*
137 * Poll netif, pass any read packet to lwIP
138 * Has internal timeout of 100 msec (sometimes less) based on
139 * sys_timeouts_sleeptime().
140 */
141 tapif_select(&netif);
142
143 sys_check_timeouts();
144
145 server_coap_poll();
146 }
147
148 return 0;
149 }
150