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; }