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annotate rvinterf/old/etmsend.c @ 528:1affe428bf72

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getting closer to compiling l1_cust.c
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Tue, 15 Jul 2014 16:54:52 +0000
parents f42854da4563
children
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172
019120585a1c etmsend hack-utility written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1 /*
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2 * This program is a hack that sends a hand-crafted ETM packet
019120585a1c etmsend hack-utility written, compiles
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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,
019120585a1c etmsend hack-utility written, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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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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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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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 }