FreeCalypso > hg > freecalypso-tools
annotate rvinterf/old/before-rvinterf/etmsend.c @ 954:21604c3413c1
rvinterf: disallow -Petmoff mode
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 07 Jun 2023 20:15:43 +0000 |
parents | e7502631a0f9 |
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1 /* |
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2 * This program is a hack that sends a hand-crafted ETM packet |
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3 * to the UNIX-local dgram socket established by rvtdump with -s option. |
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4 */ |
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5 |
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6 #include <sys/types.h> |
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7 #include <sys/socket.h> |
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8 #include <sys/un.h> |
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9 #include <stdio.h> |
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10 #include <string.h> |
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11 #include <strings.h> |
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12 #include <stdlib.h> |
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13 #include <unistd.h> |
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14 #include "pktmux.h" |
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15 #include "txpkt.h" |
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16 |
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17 char sockpath[] = "/tmp/rvt_send_socket"; |
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18 |
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19 u_char packet[MAX_PKT_TO_TARGET]; |
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20 int payload_len; |
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21 |
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22 main(argc, argv) |
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23 char **argv; |
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24 { |
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25 int i, c, s; |
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26 struct sockaddr_un local; |
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27 unsigned int namelen; |
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28 |
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29 if (argc < 2) { |
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30 fprintf(stderr, "usage: %s hexbytes...\n", argv[0]); |
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31 exit(1); |
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32 } |
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33 payload_len = argc - 1; |
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34 if (payload_len > MAX_PKT_TO_TARGET-2) { |
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35 fprintf(stderr, |
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36 "%s: too many bytes (packet length limit exceeded)\n", |
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37 argv[0]); |
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38 exit(1); |
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39 } |
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40 |
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41 packet[0] = RVT_TM_HEADER; |
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42 for (i = 1; i <= payload_len; i++) |
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43 packet[i] = strtoul(argv[i], 0, 16); |
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44 c = 0; |
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45 for (i = 1; i <= payload_len; i++) |
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46 c ^= packet[i]; |
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47 packet[payload_len+1] = c; |
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48 |
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49 s = socket(AF_UNIX, SOCK_DGRAM, 0); |
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50 if (s < 0) { |
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51 perror("socket(AF_UNIX, SOCK_DGRAM, 0)"); |
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52 exit(1); |
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53 } |
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54 |
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55 local.sun_family = AF_UNIX; |
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56 strncpy(local.sun_path, sockpath, sizeof(local.sun_path)); |
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57 local.sun_path[sizeof(local.sun_path) - 1] = '\0'; |
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58 |
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59 /* we use the same magic that X11 uses in Xtranssock.c for |
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60 * calculating the proper length of the sockaddr */ |
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61 #if defined(BSD44SOCKETS) || defined(__UNIXWARE__) |
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62 local.sun_len = strlen(local.sun_path); |
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63 #endif |
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64 #if defined(BSD44SOCKETS) || defined(SUN_LEN) |
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65 namelen = SUN_LEN(&local); |
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66 #else |
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67 namelen = strlen(local.sun_path) + |
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68 offsetof(struct sockaddr_un, sun_path); |
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69 #endif |
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70 |
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71 i = sendto(s, packet, payload_len+2, 0, |
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72 (struct sockaddr *) &local, namelen); |
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73 if (i < 0) { |
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74 perror("sendto"); |
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75 exit(1); |
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76 } |
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77 |
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78 exit(0); |
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79 } |