/* verify the root hash. This also means we need to compute the
* Merkle tree root for the current block.
*/
int
verifyBLOCK_SIG(block_sig_t *bs, gtfile gf, FILE *sigfp, FILE *nsigfp,
uint8_t bExtend, gterrctx_t *ectx)
{
int r;
int gtstate;
block_sig_t *file_bs = NULL;
GTTimestamp *timestamp = NULL;
GTVerificationInfo *vrfyInf;
GTDataHash *root = NULL;
tlvrecord_t rec;
if((r = verifySigblkFinish(gf, &root)) != 0)
goto done;
if((r = rsgt_tlvrdVrfyBlockSig(sigfp, &file_bs, &rec)) != 0)
goto done;
if(ectx->recNum != bs->recCount) {
r = RSGTE_INVLD_RECCNT;
goto done;
}
gtstate = GTTimestamp_DERDecode(file_bs->sig.der.data,
file_bs->sig.der.len, ×tamp);
if(gtstate != GT_OK) {
r = RSGTE_TS_DERDECODE;
ectx->gtstate = gtstate;
goto done;
}
gtstate = GTHTTP_verifyTimestampHash(timestamp, root, NULL,
NULL, NULL, rsgt_read_puburl, 0, &vrfyInf);
if(! (gtstate == GT_OK
&& vrfyInf->verification_errors == GT_NO_FAILURES) ) {
r = RSGTE_INVLD_TIMESTAMP;
ectx->gtstate = gtstate;
goto done;
}
if(rsgt_read_showVerified)
reportVerifySuccess(ectx, vrfyInf);
if(bExtend)
if((r = rsgt_extendSig(timestamp, &rec, ectx)) != 0) goto done;
if(nsigfp != NULL)
if((r = rsgt_tlvwrite(nsigfp, &rec)) != 0) goto done;
r = 0;
done:
if(file_bs != NULL)
rsgt_objfree(0x0902, file_bs);
if(r != 0)
reportError(r, ectx);
if(timestamp != NULL)
GTTimestamp_free(timestamp);
return r;
}
int main(int argc, char* argv[])
{
int res = GT_OK;
char *in_file = NULL;
char *out_file = NULL;
char *tsa_url = NULL;
unsigned char *der_in = NULL;
size_t der_in_len;
unsigned char *der_out = NULL;
size_t der_out_len;
GTTimestamp *in_timestamp = NULL;
GTTimestamp *out_timestamp = NULL;
/* Read arguments. */
if (argc != 4) {
printf("Usage: %s timestamp_in_file timestamp_out_file verifier_url\n", argv[0]);
goto cleanup;
}
in_file = argv[1];
out_file = argv[2];
tsa_url = argv[3];
/* Init GuardTime libraries. */
res = GT_init();
if (res != GT_OK) {
fprintf(stderr, "GT_init() failed: %d (%s)\n",
res, GT_getErrorString(res));
goto cleanup;
}
res = GTHTTP_init("C SDK example", 1);
if (res != GT_OK) {
fprintf(stderr, "GTHTTP_init() failed: %d (%s)\n",
res, GTHTTP_getErrorString(res));
goto cleanup;
}
/* Read timestamp file. */
res = GT_loadFile(in_file, &der_in, &der_in_len);
if (res != GT_OK) {
fprintf(stderr, "Cannot load timestamp file %s: %d (%s)\n",
in_file, res, GT_getErrorString(res));
if (res == GT_IO_ERROR) {
fprintf(stderr, "\t%d (%s)\n", errno, strerror(errno));
}
goto cleanup;
}
/* Decode timestamp. */
res = GTTimestamp_DERDecode(der_in, der_in_len, &in_timestamp);
if (res != GT_OK) {
fprintf(stderr, "GTTimestamp_DERDecode() failed: %d (%s)\n",
res, GT_getErrorString(res));
goto cleanup;
}
/* Extend timestamp. */
res = GTHTTP_extendTimestamp(in_timestamp, tsa_url, &out_timestamp);
if (res != GT_OK) {
fprintf(stderr, "GTHTTP_extendTimestamp() failed: %d (%s)\n",
res, GTHTTP_getErrorString(res));
goto cleanup;
}
/* Encode timestamp. */
res = GTTimestamp_getDEREncoded(out_timestamp, &der_out, &der_out_len);
if (res != GT_OK) {
fprintf(stderr, "GTTimestamp_getDEREncoded() returned %d (%s)\n",
res, GT_getErrorString(res));
goto cleanup;
}
/* Save DER-encoded timestamp to file. */
res = GT_saveFile(out_file, der_out, der_out_len);
if (res != GT_OK) {
fprintf(stderr, "Cannot save extended timestamp to file %s: %d (%s)\n",
out_file, res, GT_getErrorString(res));
if (res == GT_IO_ERROR) {
fprintf(stderr, "\t%d (%s)\n", errno, strerror(errno));
}
goto cleanup;
}
printf("Extending succeeded!\n");
cleanup:
GT_free(der_out);
GTTimestamp_free(out_timestamp);
GTTimestamp_free(in_timestamp);
GT_free(der_in);
/* Finalize GuardTime libraries. */
GTHTTP_finalize();
GT_finalize();
return res == GT_OK ? EXIT_SUCCESS : EXIT_FAILURE;
}
