sys/src/cmd/ssh/authtis.c

   1 #include "ssh.h"
   2
   3 static int
   4 authtisfn(Conn *c)
   5 {
   6         int fd, n;
   7         char *chal, resp[256];
   8         Msg *m;
   9
  10         if(!c->interactive)
  11                 return -1;
  12
  13         debug(DBG_AUTH, "try TIS\n");
  14         sendmsg(allocmsg(c, SSH_CMSG_AUTH_TIS, 0));
  15
  16         m = recvmsg(c, -1);
  17         switch(m->type){
  18         default:
  19                 badmsg(m, SSH_SMSG_AUTH_TIS_CHALLENGE);
  20         case SSH_SMSG_FAILURE:
  21                 free(m);
  22                 return -1;
  23         case SSH_SMSG_AUTH_TIS_CHALLENGE:
  24                 break;
  25         }
  26
  27         chal = getstring(m);
  28         free(m);
  29
  30         if((fd = open("/dev/cons", ORDWR)) < 0)
  31                 error("can't open console");
  32
  33         fprint(fd, "TIS Authentication\n%s", chal);
  34         n = read(fd, resp, sizeof resp-1);
  35         if(n < 0)
  36                 resp[0] = '\0';
  37         else
  38                 resp[n] = '\0';
  39
  40         if(resp[0] == 0 || resp[0] == '\n')
  41                 return -1;
  42
  43         m = allocmsg(c, SSH_CMSG_AUTH_TIS_RESPONSE, 4+strlen(resp));
  44         putstring(m, resp);
  45         sendmsg(m);
  46
  47         m = recvmsg(c, -1);
  48         switch(m->type){
  49         default:
  50                 badmsg(m, 0);
  51         case SSH_SMSG_SUCCESS:
  52                 free(m);
  53                 return 0;
  54         case SSH_SMSG_FAILURE:
  55                 free(m);
  56                 return -1;
  57         }
  58 }
  59
  60 Auth authtis =
  61 {
  62         SSH_AUTH_TIS,
  63         "tis",
  64         authtisfn,
  65 };