git.zerfleddert.de Git - hmcfgusb/blob - hmsniff.c

   1 /* HM-sniffer for HM-CFG-USB
   2  *
   3  * Copyright (c) 2013-15 Michael Gernoth <michael@gernoth.net>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy
   6  * of this software and associated documentation files (the "Software"), to
   7  * deal in the Software without restriction, including without limitation the
   8  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   9  * sell copies of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <unistd.h>
  27 #include <stdint.h>
  28 #include <string.h>
  29 #include <strings.h>
  30 #include <poll.h>
  31 #include <errno.h>
  32 #include <time.h>
  33 #include <sys/time.h>
  34 #include <libusb-1.0/libusb.h>
  35
  36 #include "version.h"
  37 #include "hexdump.h"
  38 #include "hmcfgusb.h"
  39
  40 static int verbose = 0;
  41
  42 /* See HMConfig.pm */
  43 char *hm_message_types(uint8_t type, uint8_t subtype)
  44 {
  45         switch(type) {
  46                 case 0x00:
  47                         return "Device Info";
  48                         break;
  49                 case 0x01:
  50                         return "Configuration";
  51                         break;
  52                 case 0x02:
  53                         if (subtype >= 0x80 && subtype <= 0x8f) {
  54                                 return "NACK";
  55                         } else if (subtype == 0x01) {
  56                                 return "ACKinfo";
  57                         } else if (subtype == 0x04) {
  58                                 return "AESrequest";
  59                         }
  60                         return "ACK";
  61                         break;
  62                 case 0x03:
  63                         return "AESreply";
  64                         break;
  65                 case 0x04:
  66                         return "AESkey";
  67                         break;
  68                 case 0x10:
  69                         return "Information";
  70                         break;
  71                 case 0x11:
  72                         return "SET";
  73                         break;
  74                 case 0x12:
  75                         return "HAVE_DATA";
  76                         break;
  77                 case 0x3e:
  78                         return "Switch";
  79                         break;
  80                 case 0x3f:
  81                         return "Timestamp";
  82                         break;
  83                 case 0x40:
  84                         return "Remote";
  85                         break;
  86                 case 0x41:
  87                         return "Sensor";
  88                         break;
  89                 case 0x53:
  90                         return "Water sensor";
  91                         break;
  92                 case 0x58:
  93                         return "Climate event";
  94                         break;
  95                 case 0x5a:
  96                         return "Thermal control";
  97                         break;
  98                 case 0x70:
  99                         return "Weather event";
 100                         break;
 101                 default:
 102                         return "?";
 103                         break;
 104         }
 105 }
 106
 107 static void dissect_hm(uint8_t *buf, int len)
 108 {
 109         struct timeval tv;
 110         struct tm *tmp;
 111         char ts[32];
 112         static int count = 0;
 113         int i;
 114
 115         gettimeofday(&tv, NULL);
 116         tmp = localtime(&tv.tv_sec);
 117         memset(ts, 0, sizeof(ts));
 118         strftime(ts, sizeof(ts)-1, "%Y-%m-%d %H:%M:%S", tmp);
 119
 120         if (verbose) {
 121                 printf("%s.%06ld: ", ts, tv.tv_usec);
 122
 123                 for (i = 0; i < len; i++) {
 124                         printf("%02X", buf[i]);
 125                 }
 126                 printf("\n");
 127                 printf("Packet information:\n");
 128                 printf("\tLength: %u\n", buf[0]);
 129                 printf("\tMessage ID: %u\n", buf[1]);
 130                 printf("\tSender: %02x%02x%02x\n", buf[4], buf[5], buf[6]);
 131                 printf("\tReceiver: %02x%02x%02x\n", buf[7], buf[8], buf[9]);
 132                 printf("\tControl Byte: 0x%02x\n", buf[2]);
 133                 printf("\t\tFlags: ");
 134                 if (buf[2] & (1 << 0)) printf("WAKEUP ");
 135                 if (buf[2] & (1 << 1)) printf("WAKEMEUP ");
 136                 if (buf[2] & (1 << 2)) printf("CFG ");
 137                 if (buf[2] & (1 << 3)) printf("? ");
 138                 if (buf[2] & (1 << 4)) printf("BURST ");
 139                 if (buf[2] & (1 << 5)) printf("BIDI ");
 140                 if (buf[2] & (1 << 6)) printf("RPTED ");
 141                 if (buf[2] & (1 << 7)) printf("RPTEN ");
 142                 printf("\n");
 143                 printf("\tMessage type: %s (0x%02x 0x%02x)\n", hm_message_types(buf[3], buf[10]), buf[3], buf[10]);
 144                 printf("\tMessage: ");
 145                 for (i = 10; i < len; i++) {
 146                         printf("%02X", buf[i]);
 147                 }
 148                 printf("\n");
 149
 150                 printf("\n");
 151         } else {
 152                 if (!(count++ % 20))
 153                         printf("                         LL NR FL CM sender recvr  payload\n");
 154                 printf("%s.%03ld: %02X %02X %02X %02X %02X%02X%02X %02X%02X%02X ",
 155                                 ts, tv.tv_usec/1000,
 156                                 buf[0], buf[1], buf[2], buf[3],
 157                                 buf[4], buf[5], buf[6],
 158                                 buf[7], buf[8], buf[9]);
 159
 160                 for (i = 10; i < len; i++) {
 161                         printf("%02X", buf[i]);
 162                 }
 163                 printf("%s(%s)\n", (i>10)?" ":"", hm_message_types(buf[3], buf[10]));
 164         }
 165 }
 166
 167 struct recv_data {
 168         int wrong_hmid;
 169 };
 170
 171 static int parse_hmcfgusb(uint8_t *buf, int buf_len, void *data)
 172 {
 173         struct recv_data *rdata = data;
 174
 175         if (buf_len < 1)
 176                 return 1;
 177
 178         switch(buf[0]) {
 179                 case 'E':
 180                         dissect_hm(buf + 13, buf[13] + 1);
 181                         break;
 182                 case 'H':
 183                         if ((buf[27] != 0x00) ||
 184                             (buf[28] != 0x00) ||
 185                             (buf[29] != 0x00)) {
 186                                 printf("hmId is currently set to: %02x%02x%02x\n", buf[27], buf[28], buf[29]);
 187                                 rdata->wrong_hmid = 1;
 188                         }
 189                         break;
 190                 case 'R':
 191                 case 'I':
 192                         break;
 193                 default:
 194                         hexdump(buf, buf_len, "Unknown> ");
 195                         break;
 196         }
 197
 198         return 1;
 199 }
 200
 201 void hmsniff_syntax(char *prog)
 202 {
 203         fprintf(stderr, "Syntax: %s options\n\n", prog);
 204         fprintf(stderr, "Possible options:\n");
 205         fprintf(stderr, "\t-v\t\tverbose mode\n");
 206         fprintf(stderr, "\t-V\t\tshow version (" VERSION ")\n");
 207
 208 }
 209
 210 int main(int argc, char **argv)
 211 {
 212         struct hmcfgusb_dev *dev;
 213         struct recv_data rdata;
 214         int quit = 0;
 215         int opt;
 216
 217         while((opt = getopt(argc, argv, "vV")) != -1) {
 218                 switch (opt) {
 219                         case 'v':
 220                                 verbose = 1;
 221                                 break;
 222                         case 'V':
 223                                 printf("hmsniff " VERSION "\n");
 224                                 printf("Copyright (c) 2013-15 Michael Gernoth\n\n");
 225                                 exit(EXIT_SUCCESS);
 226                         case 'h':
 227                         case ':':
 228                         case '?':
 229                         default:
 230                                 hmsniff_syntax(argv[0]);
 231                                 exit(EXIT_FAILURE);
 232                                 break;
 233                 }
 234         }
 235
 236         hmcfgusb_set_debug(0);
 237
 238         do {
 239                 memset(&rdata, 0, sizeof(rdata));
 240                 rdata.wrong_hmid = 0;
 241
 242                 dev = hmcfgusb_init(parse_hmcfgusb, &rdata);
 243                 if (!dev) {
 244                         fprintf(stderr, "Can't initialize HM-CFG-USB, retrying in 1s...\n");
 245                         sleep(1);
 246                         continue;
 247                 }
 248                 printf("HM-CFG-USB opened!\n");
 249
 250                 hmcfgusb_send_null_frame(dev, 1);
 251                 hmcfgusb_send(dev, (unsigned char*)"K", 1, 1);
 252
 253                 while(!quit) {
 254                         int fd;
 255
 256                         if (rdata.wrong_hmid) {
 257                                 printf("changing hmId to 000000, this might reboot the device!\n");
 258                                 hmcfgusb_send(dev, (unsigned char*)"A\00\00\00", 4, 1);
 259                                 rdata.wrong_hmid = 0;
 260                                 hmcfgusb_send(dev, (unsigned char*)"K", 1, 1);
 261                         }
 262                         fd = hmcfgusb_poll(dev, 1000);
 263                         if (fd >= 0) {
 264                                 fprintf(stderr, "activity on unknown fd %d!\n", fd);
 265                                 continue;
 266                         } else if (fd == -1) {
 267                                 if (errno) {
 268                                         if (errno != ETIMEDOUT) {
 269                                                 perror("hmcfgusb_poll");
 270                                                 break;
 271                                         } else {
 272                                                 /* periodically wakeup the device */
 273                                                 hmcfgusb_send_null_frame(dev, 1);
 274                                         }
 275                                 }
 276                         }
 277                 }
 278
 279                 hmcfgusb_close(dev);
 280         } while (!quit);
 281
 282         hmcfgusb_exit();
 283
 284         return EXIT_SUCCESS;
 285 }