evcat.c

   1 #include <stdlib.h>
   2 #include <stdio.h>
   3 #include <unistd.h>
   4 #include <fcntl.h>
   5 #include <errno.h>
   6 #include <sys/ioctl.h>
   7 #include <linux/input.h>
   8
   9 int main(int argc, char **argv)
  10 {
  11     int c, ret, fd;
  12     struct input_event iev;
  13     int grab, decode;
  14
  15     if(argc < 2) {
  16         fprintf(stderr, "usage: evcat [-gd] FILE\n");
  17         exit(1);
  18     }
  19     grab = decode = 0;
  20     while((c = getopt(argc, argv, "gd")) > 0) {
  21         switch(c) {
  22         case 'g':
  23             grab = 1;
  24             break;
  25         case 'd':
  26             decode = 1;
  27             break;
  28         default:
  29             exit(1);
  30         }
  31     }
  32     if((fd = open(argv[optind], O_RDONLY)) < 0) {
  33         perror(argv[optind]);
  34         exit(1);
  35     }
  36     if(grab && ioctl(fd, EVIOCGRAB, 1)) {
  37         perror("EVIOCGRAB");
  38         exit(1);
  39     }
  40     while(1) {
  41         ret = read(fd, &iev, sizeof(iev));
  42         if(ret < 0) {
  43             perror("read");
  44             exit(1);
  45         }
  46         if(ret == 0)
  47             break;
  48         if(decode) {
  49             printf("%010lu.%06lu:\t", iev.time.tv_sec, iev.time.tv_usec);
  50             switch(iev.type) {
  51             case EV_SYN:
  52                 printf("sync\t");
  53                 switch(iev.code) {
  54                 case SYN_REPORT:
  55                     printf("report");
  56                     break;
  57                 case SYN_CONFIG:
  58                     printf("config");
  59                     break;
  60                 default:
  61                     printf("%04x", iev.code);
  62                 }
  63                 break;
  64             case EV_KEY:
  65                 printf("key\t%i\t%i", iev.code, iev.value);
  66                 break;
  67             case EV_REL:
  68                 printf("rel\t");
  69                 switch(iev.code) {
  70                 case REL_X:
  71                     printf("x\t%04i", iev.value);
  72                     break;
  73                 case REL_Y:
  74                     printf("y\t%04i", iev.value);
  75                     break;
  76                 case REL_Z:
  77                     printf("z\t%04i", iev.value);
  78                     break;
  79                 case REL_RX:
  80                     printf("rx\t%04i", iev.value);
  81                     break;
  82                 case REL_RY:
  83                     printf("ry\t%04i", iev.value);
  84                     break;
  85                 case REL_RZ:
  86                     printf("rz\t%04i", iev.value);
  87                     break;
  88                 case REL_HWHEEL:
  89                     printf("hwheel\t%04i", iev.value);
  90                     break;
  91                 case REL_DIAL:
  92                     printf("dial\t%04i", iev.value);
  93                     break;
  94                 case REL_WHEEL:
  95                     printf("wheel\t%04i", iev.value);
  96                     break;
  97                 case REL_MISC:
  98                     printf("misc\t%04i", iev.value);
  99                     break;
 100                 }
 101                 break;
 102             case EV_ABS:
 103                 printf("abs\t");
 104                 switch(iev.code) {
 105                 case ABS_X:
 106                     printf("x\t%04i", iev.value);
 107                     break;
 108                 case ABS_Y:
 109                     printf("y\t%04i", iev.value);
 110                     break;
 111                 case ABS_Z:
 112                     printf("z\t%04i", iev.value);
 113                     break;
 114                 case ABS_RX:
 115                     printf("rx\t%04i", iev.value);
 116                     break;
 117                 case ABS_RY:
 118                     printf("ry\t%04i", iev.value);
 119                     break;
 120                 case ABS_RZ:
 121                     printf("rz\t%04i", iev.value);
 122                     break;
 123                 case ABS_THROTTLE:
 124                     printf("throttle\t%04i", iev.value);
 125                     break;
 126                 case ABS_RUDDER:
 127                     printf("rudder\t%04i", iev.value);
 128                     break;
 129                 case ABS_WHEEL:
 130                     printf("wheel\t%04i", iev.value);
 131                     break;
 132                 case ABS_GAS:
 133                     printf("gas\t%04i", iev.value);
 134                     break;
 135                 case ABS_BRAKE:
 136                     printf("brake\t%04i", iev.value);
 137                     break;
 138                 case ABS_PRESSURE:
 139                     printf("pressure\t%04i", iev.value);
 140                     break;
 141                 case ABS_DISTANCE:
 142                     printf("distance\t%04i", iev.value);
 143                     break;
 144                 case ABS_TILT_X:
 145                     printf("tilt-x\t%04i", iev.value);
 146                     break;
 147                 case ABS_TILT_Y:
 148                     printf("tilt-y\t%04i", iev.value);
 149                     break;
 150                 case ABS_TOOL_WIDTH:
 151                     printf("width\t%04i", iev.value);
 152                     break;
 153                 case ABS_VOLUME:
 154                     printf("volume\t%04i", iev.value);
 155                     break;
 156                 case ABS_MISC:
 157                     printf("misc\t%04i", iev.value);
 158                     break;
 159                 }
 160                 break;
 161             case EV_MSC:
 162                 printf("misc\t");
 163                 switch(iev.code) {
 164                 case MSC_SERIAL:
 165                     printf("serial\t%i", iev.value);
 166                     break;
 167                 case MSC_PULSELED:
 168                     printf("pled\t%i", iev.value);
 169                     break;
 170                 case MSC_GESTURE:
 171                     printf("gesture\t%i", iev.value);
 172                     break;
 173                 case MSC_RAW:
 174                     printf("raw\t%i", iev.value);
 175                     break;
 176                 case MSC_SCAN:
 177                     printf("scan\t%i", iev.value);
 178                     break;
 179                 }
 180                 break;
 181             case EV_LED:
 182                 printf("led\t");
 183                 switch(iev.code) {
 184                 case LED_NUML:
 185                     printf("num\t");
 186                     break;
 187                 case LED_CAPSL:
 188                     printf("caps\t");
 189                     break;
 190                 case LED_SCROLLL:
 191                     printf("scroll\t");
 192                     break;
 193                 default:
 194                     printf("%i\t", iev.code);
 195                     break;
 196                 }
 197                 printf("%i", iev.value);
 198                 break;
 199             case EV_SND:
 200                 printf("sound\t%i\t%i", iev.code, iev.value);
 201                 break;
 202             case EV_REP:
 203                 printf("repeat\t");
 204                 switch(iev.code) {
 205                 case REP_DELAY:
 206                     printf("delay\t");
 207                     break;
 208                 case REP_PERIOD:
 209                     printf("period\t");
 210                     break;
 211                 default:
 212                     printf("%i\t", iev.code);
 213                     break;
 214                 }
 215                 printf("%i", iev.value);
 216                 break;
 217             default:
 218                 printf("%04x %04x %08x", iev.type, iev.code, iev.value);
 219                 break;
 220             }
 221             printf("\n");
 222         } else {
 223             printf("%010lu.%06lu: %04x %04x %08x\n", iev.time.tv_sec, iev.time.tv_usec, iev.type, iev.code, iev.value);
 224         }
 225         fflush(stdout);
 226     }
 227     if(grab && ioctl(fd, EVIOCGRAB, 0)) {
 228         perror("EVIOC(un)GRAB");
 229         exit(1);
 230     }
 231     close(fd);
 232     return(0);
 233 }