static int
ping_device (u2fh_devs * devs, unsigned index)
{
unsigned char data[1] = { 0 };
unsigned char resp[1024];
size_t resplen = sizeof (resp);
return u2fh_sendrecv (devs, index, U2FHID_PING, data, sizeof (data), resp,
&resplen);
}
static int
init_device (u2fh_devs * devs, unsigned index)
{
unsigned char resp[1024];
/* FIXME: use something slightly more random as nonce */
unsigned char nonce[] = { 0x8, 0x7, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1 };
size_t resplen = sizeof (resp);
devs->devs[index].cid = CID_BROADCAST;
if (u2fh_sendrecv
(devs, index, U2FHID_INIT, nonce, sizeof (nonce), resp,
&resplen) == U2FH_OK)
{
U2FHID_INIT_RESP initresp;
memcpy (&initresp, resp, resplen);
devs->devs[index].cid = initresp.cid;
}
else
{
return U2FH_TRANSPORT_ERROR;
}
return U2FH_OK;
}
int
main (int argc, char *argv[])
{
int exit_code = EXIT_FAILURE;
struct gengetopt_args_info args_info;
char challenge[BUFSIZ];
size_t chal_len;
char response[2048];
size_t response_len = sizeof (response);
u2fh_devs *devs = NULL;
u2fh_cmdflags flags = 0;
u2fh_rc rc;
if (cmdline_parser (argc, argv, &args_info) != 0)
exit (EXIT_FAILURE);
if (args_info.help_given)
{
cmdline_parser_print_help ();
printf ("\nReport bugs at <https://github.com/Yubico/libu2f-host>.\n");
exit (EXIT_SUCCESS);
}
chal_len = fread (challenge, 1, sizeof (challenge), stdin);
if (!feof (stdin) || ferror (stdin))
{
perror ("read");
exit (EXIT_FAILURE);
}
rc = u2fh_global_init (args_info.debug_flag ? U2FH_DEBUG : 0);
if (rc != U2FH_OK)
{
fprintf (stderr, "error: u2fh_global_init (%d): %s\n", rc,
u2fh_strerror (rc));
exit (EXIT_FAILURE);
}
rc = u2fh_devs_init (&devs);
if (rc != U2FH_OK)
{
fprintf (stderr, "error: u2fh_devs_init (%d): %s\n", rc,
u2fh_strerror (rc));
goto done;
}
rc = u2fh_devs_discover (devs, NULL);
if (rc != U2FH_OK)
{
fprintf (stderr, "error: u2fh_devs_discover (%d): %s\n", rc,
u2fh_strerror (rc));
goto done;
}
switch (args_info.action_arg)
{
case action_arg_register:
case action_arg_authenticate:
if (args_info.origin_arg == NULL)
{
fprintf (stderr, "error: origin URL empty, use -o to specify it\n");
exit (EXIT_FAILURE);
}
if (args_info.action_arg == action_arg_register)
{
rc = u2fh_register2 (devs, challenge, args_info.origin_arg,
response, &response_len,
args_info.touch_flag ? 0 :
U2FH_REQUEST_USER_PRESENCE);
}
else
{
rc = u2fh_authenticate2 (devs, challenge, args_info.origin_arg,
response, &response_len,
args_info.touch_flag ? 0 :
U2FH_REQUEST_USER_PRESENCE);
}
break;
case action_arg_sendrecv:
{
uint8_t command;
unsigned char out[2048];
size_t outlen = sizeof (out);
if (args_info.command_arg == NULL)
{
fprintf (stderr, "error: empty sendrecv command.\n");
exit (EXIT_FAILURE);
}
sscanf (args_info.command_arg, "%hhx", &command);
rc =
u2fh_sendrecv (devs, 0, command, challenge, chal_len - 1, out,
&outlen);
}
break;
case action__NULL:
default:
fprintf (stderr, "error: unknown action.\n");
goto done;
}
if (rc != U2FH_OK)
{
fprintf (stderr, "error (%d): %s\n", rc, u2fh_strerror (rc));
goto done;
}
if (strlen (response))
{
printf ("%s\n", response);
}
exit_code = EXIT_SUCCESS;
done:
u2fh_devs_done (devs);
u2fh_global_done ();
exit (exit_code);
}
