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comparison rvinterf/old/etmsend.c @ 173:f42854da4563

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rvinterf: beginning of refactoring
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Fri, 22 Nov 2013 05:56:07 +0000
parents rvinterf/etmsend.c@019120585a1c
children
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172:019120585a1c 173:f42854da4563
1 /*
2 * This program is a hack that sends a hand-crafted ETM packet
3 * to the UNIX-local dgram socket established by rvtdump with -s option.
4 */
5
6 #include <sys/types.h>
7 #include <sys/socket.h>
8 #include <sys/un.h>
9 #include <stdio.h>
10 #include <string.h>
11 #include <strings.h>
12 #include <stdlib.h>
13 #include <unistd.h>
14 #include "pktmux.h"
15 #include "txpkt.h"
16
17 char sockpath[] = "/tmp/rvt_send_socket";
18
19 u_char packet[MAX_PKT_TO_TARGET];
20 int payload_len;
21
22 main(argc, argv)
23 char **argv;
24 {
25 int i, c, s;
26 struct sockaddr_un local;
27 unsigned int namelen;
28
29 if (argc < 2) {
30 fprintf(stderr, "usage: %s hexbytes...\n", argv[0]);
31 exit(1);
32 }
33 payload_len = argc - 1;
34 if (payload_len > MAX_PKT_TO_TARGET-2) {
35 fprintf(stderr,
36 "%s: too many bytes (packet length limit exceeded)\n",
37 argv[0]);
38 exit(1);
39 }
40
41 packet[0] = RVT_TM_HEADER;
42 for (i = 1; i <= payload_len; i++)
43 packet[i] = strtoul(argv[i], 0, 16);
44 c = 0;
45 for (i = 1; i <= payload_len; i++)
46 c ^= packet[i];
47 packet[payload_len+1] = c;
48
49 s = socket(AF_UNIX, SOCK_DGRAM, 0);
50 if (s < 0) {
51 perror("socket(AF_UNIX, SOCK_DGRAM, 0)");
52 exit(1);
53 }
54
55 local.sun_family = AF_UNIX;
56 strncpy(local.sun_path, sockpath, sizeof(local.sun_path));
57 local.sun_path[sizeof(local.sun_path) - 1] = '\0';
58
59 /* we use the same magic that X11 uses in Xtranssock.c for
60 * calculating the proper length of the sockaddr */
61 #if defined(BSD44SOCKETS) || defined(__UNIXWARE__)
62 local.sun_len = strlen(local.sun_path);
63 #endif
64 #if defined(BSD44SOCKETS) || defined(SUN_LEN)
65 namelen = SUN_LEN(&local);
66 #else
67 namelen = strlen(local.sun_path) +
68 offsetof(struct sockaddr_un, sun_path);
69 #endif
70
71 i = sendto(s, packet, payload_len+2, 0,
72 (struct sockaddr *) &local, namelen);
73 if (i < 0) {
74 perror("sendto");
75 exit(1);
76 }
77
78 exit(0);
79 }