opt/pflana.c

   1 #include <stdio.h>
   2 #include <stdint.h>
   3 #include <unistd.h>
   4 #include <signal.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <ctype.h>
   8 #include <assert.h>
   9 #include <sys/socket.h>
  10
  11 #define AF_LANA         27
  12
  13 int main(void)
  14 {
  15         int sock, i;
  16         char buff[1600];
  17
  18         sock = socket(AF_LANA, SOCK_RAW, 0);
  19         if (sock < 0) {
  20                 perror("socket");
  21                 return 0;
  22         }
  23
  24         printf("Worked! Abort with ^C\n");
  25         while (1) {
  26                 memset(buff, 0, sizeof(buff));
  27                 int ret = recv(sock, buff, sizeof(buff), 0);
  28                 if (ret < 0) {
  29                         perror("recvmsg");
  30                         continue;
  31                 } else {
  32                         assert(ret <= sizeof(buff));
  33                         printf("RECEIVED ......\n");
  34                         printf("hex:\n");
  35                         for (i = 0; i < ret; i++)
  36                                 printf("0x%.2x ", (uint8_t) buff[i]);
  37                         printf("ascii:\n");
  38                         for (i = 0; i < ret; i++)
  39                                 printf("%c ", isprint(buff[i]) ? buff[i] : '.');
  40                         printf("\n\n");
  41                         fflush(stdout);
  42                 }
  43         }
  44
  45         close(sock);
  46         return 0;
  47 }
  48