int main (int argc,
char *argv[])
{
TIDC_INSTANCE *tidc;
int conn = 0;
int rc;
gss_ctx_id_t gssctx;
struct cmdline_args opts;
/* parse the command line*/
/* set defaults */
opts.server=NULL;
opts.rp_realm=NULL;
opts.target_realm=NULL;
opts.community=NULL;
opts.port=TID_PORT;
argp_parse(&argp, argc, argv, 0, 0, &opts);
/* TBD -- validity checking, dealing with quotes, etc. */
print_version_info();
/* Use standalone logging */
tr_log_open();
/* set logging levels */
talloc_set_log_stderr();
tr_log_threshold(LOG_CRIT);
tr_console_threshold(LOG_DEBUG);
printf("TIDC Client:\nServer = %s, rp_realm = %s, target_realm = %s, community = %s, port = %i\n", opts.server, opts.rp_realm, opts.target_realm, opts.community, opts.port);
/* Create a TID client instance & the client DH */
tidc = tidc_create();
if (NULL == (tidc->client_dh = tr_create_dh_params(NULL, 0))) {
printf("Error creating client DH params.\n");
return 1;
}
/* Set-up TID connection */
if (-1 == (conn = tidc_open_connection(tidc, opts.server, opts.port, &gssctx))) {
/* Handle error */
printf("Error in tidc_open_connection.\n");
return 1;
};
/* Send a TID request */
if (0 > (rc = tidc_send_request(tidc, conn, gssctx, opts.rp_realm, opts.target_realm, opts.community,
&tidc_resp_handler, NULL))) {
/* Handle error */
printf("Error in tidc_send_request, rc = %d.\n", rc);
return 1;
}
/* Clean-up the TID client instance, and exit */
tidc_destroy(tidc);
return 0;
}
bool tr_init(void)
{
if (global_tidc) return true;
global_tidc = tidc_create();
if (!global_tidc) {
DEBUG2( "tr_init: Error creating global TIDC instance.\n");
return false;
}
if (!tidc_set_dh(global_tidc, tr_create_dh_params(NULL, 0))) {
DEBUG2( "tr_init: Error creating client DH params.\n");
return false;
}
return true;
}
int main (int argc,
const char *argv[])
{
DH *c_dh = NULL;
DH *s_dh = NULL;
unsigned char *c_keybuf = NULL;
unsigned char *s_keybuf = NULL;
int c_keylen = 0, s_keylen = 0, i = 0;
const BIGNUM *pub_key;
/* TBD -- Generate random private keys */
/* Generate initial DH params on the client side */
if (NULL == (c_dh = tr_create_dh_params(NULL, 0))) {
printf("Error: Can't create client DH params, exiting.\n");
exit(1);
}
fprintf(stderr, "Client DH Parameters:\n");
DHparams_print_fp(stdout, c_dh);
fprintf(stderr, "\n");
/*** Would now send DH params and client's public key to the server ***/
/* Generate DH params on the server side */
if (NULL == (s_dh = tr_create_matching_dh(NULL, 0, c_dh))) {
printf("Error: Can't create server server DH params, exiting.\n");
exit(1);
}
fprintf(stdout, "Server DH Parameters:\n");
DHparams_print_fp(stdout, s_dh);
fprintf(stdout, "\n");
/*** Would now send server's pub key to client ***/
/* Compute key on client */
DH_get0_key(s_dh, &pub_key, NULL);
if (0 > (c_keylen = tr_compute_dh_key(&c_keybuf,
pub_key,
c_dh))) {
printf("Error: Can't compute client key.\n");
}
/* Compute key on server */
DH_get0_key(c_dh, &pub_key, NULL);
if (0 > (s_keylen = tr_compute_dh_key(&s_keybuf,
pub_key,
s_dh))) {
printf("Error: Can't compute server key.\n");
exit(1);
}
/* Print out the client key. */
printf("Client Key Generated (len = %d):\n", c_keylen);
for (i = 0; i < c_keylen; i++) {
printf("%2x", c_keybuf[i]);
}
printf("\n");
/* Print out the server key. */
printf("Server Key Generated (len = %d):\n", s_keylen);
for (i = 0; i < s_keylen; i++) {
printf("%2x", s_keybuf[i]);
}
printf("\n");
/* Compare the two keys to see if they match */
if ((c_keylen != s_keylen) ||
(0 != memcmp(c_keybuf, s_keybuf, c_keylen))) {
printf("Error: Different keys generated!\n");
exit(1);
}
printf("Success: Identical keys generated, key length = %d!\n", c_keylen);
exit(0);
}
