static int test_tlsext_status_type(void)
{
SSL_CTX *cctx = NULL, *sctx = NULL;
SSL *clientssl = NULL, *serverssl = NULL;
int testresult = 0;
STACK_OF(OCSP_RESPID) *ids = NULL;
OCSP_RESPID *id = NULL;
BIO *certbio = NULL;
if (!create_ssl_ctx_pair(TLS_server_method(), TLS_client_method(), &sctx,
&cctx, cert, privkey)) {
printf("Unable to create SSL_CTX pair\n");
return 0;
}
if (SSL_CTX_get_tlsext_status_type(cctx) != -1) {
printf("Unexpected initial value for "
"SSL_CTX_get_tlsext_status_type()\n");
goto end;
}
/* First just do various checks getting and setting tlsext_status_type */
clientssl = SSL_new(cctx);
if (SSL_get_tlsext_status_type(clientssl) != -1) {
printf("Unexpected initial value for SSL_get_tlsext_status_type()\n");
goto end;
}
if (!SSL_set_tlsext_status_type(clientssl, TLSEXT_STATUSTYPE_ocsp)) {
printf("Unexpected fail for SSL_set_tlsext_status_type()\n");
goto end;
}
if (SSL_get_tlsext_status_type(clientssl) != TLSEXT_STATUSTYPE_ocsp) {
printf("Unexpected result for SSL_get_tlsext_status_type()\n");
goto end;
}
SSL_free(clientssl);
clientssl = NULL;
if (!SSL_CTX_set_tlsext_status_type(cctx, TLSEXT_STATUSTYPE_ocsp)) {
printf("Unexpected fail for SSL_CTX_set_tlsext_status_type()\n");
goto end;
}
if (SSL_CTX_get_tlsext_status_type(cctx) != TLSEXT_STATUSTYPE_ocsp) {
printf("Unexpected result for SSL_CTX_get_tlsext_status_type()\n");
goto end;
}
clientssl = SSL_new(cctx);
if (SSL_get_tlsext_status_type(clientssl) != TLSEXT_STATUSTYPE_ocsp) {
printf("Unexpected result for SSL_get_tlsext_status_type() (test 2)\n");
goto end;
}
SSL_free(clientssl);
clientssl = NULL;
/*
* Now actually do a handshake and check OCSP information is exchanged and
* the callbacks get called
*/
SSL_CTX_set_tlsext_status_cb(cctx, ocsp_client_cb);
SSL_CTX_set_tlsext_status_arg(cctx, &cdummyarg);
SSL_CTX_set_tlsext_status_cb(sctx, ocsp_server_cb);
SSL_CTX_set_tlsext_status_arg(sctx, &cdummyarg);
if (!create_ssl_objects(sctx, cctx, &serverssl, &clientssl, NULL, NULL)) {
printf("Unable to create SSL objects\n");
goto end;
}
if (!create_ssl_connection(serverssl, clientssl)) {
printf("Unable to create SSL connection\n");
goto end;
}
if (!ocsp_client_called || !ocsp_server_called) {
printf("OCSP callbacks not called\n");
goto end;
}
SSL_free(serverssl);
SSL_free(clientssl);
serverssl = NULL;
clientssl = NULL;
/* Try again but this time force the server side callback to fail */
ocsp_client_called = 0;
ocsp_server_called = 0;
cdummyarg = 0;
if (!create_ssl_objects(sctx, cctx, &serverssl, &clientssl, NULL, NULL)) {
printf("Unable to create SSL objects\n");
goto end;
}
/* This should fail because the callback will fail */
if (create_ssl_connection(serverssl, clientssl)) {
printf("Unexpected success creating the connection\n");
goto end;
}
if (ocsp_client_called || ocsp_server_called) {
printf("OCSP callbacks successfully called unexpectedly\n");
goto end;
}
SSL_free(serverssl);
SSL_free(clientssl);
serverssl = NULL;
clientssl = NULL;
/*
* This time we'll get the client to send an OCSP_RESPID that it will
* accept.
*/
ocsp_client_called = 0;
ocsp_server_called = 0;
cdummyarg = 2;
if (!create_ssl_objects(sctx, cctx, &serverssl, &clientssl, NULL, NULL)) {
printf("Unable to create SSL objects\n");
goto end;
}
/*
* We'll just use any old cert for this test - it doesn't have to be an OCSP
* specific one. We'll use the server cert.
*/
certbio = BIO_new_file(cert, "r");
if (certbio == NULL) {
printf("Can't load the certificate file\n");
goto end;
}
id = OCSP_RESPID_new();
ids = sk_OCSP_RESPID_new_null();
ocspcert = PEM_read_bio_X509(certbio, NULL, NULL, NULL);
if (id == NULL || ids == NULL || ocspcert == NULL
|| !OCSP_RESPID_set_by_key(id, ocspcert)
|| !sk_OCSP_RESPID_push(ids, id)) {
printf("Unable to set OCSP_RESPIDs\n");
goto end;
}
id = NULL;
SSL_set_tlsext_status_ids(clientssl, ids);
/* Control has been transferred */
ids = NULL;
BIO_free(certbio);
certbio = NULL;
if (!create_ssl_connection(serverssl, clientssl)) {
printf("Unable to create SSL connection\n");
goto end;
}
if (!ocsp_client_called || !ocsp_server_called) {
printf("OCSP callbacks not called\n");
goto end;
}
testresult = 1;
end:
SSL_free(serverssl);
SSL_free(clientssl);
SSL_CTX_free(sctx);
SSL_CTX_free(cctx);
sk_OCSP_RESPID_pop_free(ids, OCSP_RESPID_free);
OCSP_RESPID_free(id);
BIO_free(certbio);
X509_free(ocspcert);
ocspcert = NULL;
return testresult;
}
int tls_parse_ctos_status_request(SSL *s, PACKET *pkt, unsigned int context,
X509 *x, size_t chainidx, int *al)
{
PACKET responder_id_list, exts;
/* Not defined if we get one of these in a client Certificate */
if (x != NULL)
return 1;
if (!PACKET_get_1(pkt, (unsigned int *)&s->ext.status_type)) {
*al = SSL_AD_DECODE_ERROR;
return 0;
}
if (s->ext.status_type != TLSEXT_STATUSTYPE_ocsp) {
/*
* We don't know what to do with any other type so ignore it.
*/
s->ext.status_type = TLSEXT_STATUSTYPE_nothing;
return 1;
}
if (!PACKET_get_length_prefixed_2 (pkt, &responder_id_list)) {
*al = SSL_AD_DECODE_ERROR;
return 0;
}
/*
* We remove any OCSP_RESPIDs from a previous handshake
* to prevent unbounded memory growth - CVE-2016-6304
*/
sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
if (PACKET_remaining(&responder_id_list) > 0) {
s->ext.ocsp.ids = sk_OCSP_RESPID_new_null();
if (s->ext.ocsp.ids == NULL) {
*al = SSL_AD_INTERNAL_ERROR;
return 0;
}
} else {
s->ext.ocsp.ids = NULL;
}
while (PACKET_remaining(&responder_id_list) > 0) {
OCSP_RESPID *id;
PACKET responder_id;
const unsigned char *id_data;
if (!PACKET_get_length_prefixed_2(&responder_id_list, &responder_id)
|| PACKET_remaining(&responder_id) == 0) {
*al = SSL_AD_DECODE_ERROR;
return 0;
}
id_data = PACKET_data(&responder_id);
/* TODO(size_t): Convert d2i_* to size_t */
id = d2i_OCSP_RESPID(NULL, &id_data,
(int)PACKET_remaining(&responder_id));
if (id == NULL) {
*al = SSL_AD_DECODE_ERROR;
return 0;
}
if (id_data != PACKET_end(&responder_id)) {
OCSP_RESPID_free(id);
*al = SSL_AD_DECODE_ERROR;
return 0;
}
if (!sk_OCSP_RESPID_push(s->ext.ocsp.ids, id)) {
OCSP_RESPID_free(id);
*al = SSL_AD_INTERNAL_ERROR;
return 0;
}
}
/* Read in request_extensions */
if (!PACKET_as_length_prefixed_2(pkt, &exts)) {
*al = SSL_AD_DECODE_ERROR;
return 0;
}
if (PACKET_remaining(&exts) > 0) {
const unsigned char *ext_data = PACKET_data(&exts);
sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts,
X509_EXTENSION_free);
s->ext.ocsp.exts =
d2i_X509_EXTENSIONS(NULL, &ext_data, (int)PACKET_remaining(&exts));
if (s->ext.ocsp.exts == NULL || ext_data != PACKET_end(&exts)) {
*al = SSL_AD_DECODE_ERROR;
return 0;
}
}
return 1;
}
