| /* |
| * Copyright 2016-2022 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the OpenSSL license (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| #include <string.h> |
| #include <openssl/bio.h> |
| #include <openssl/crypto.h> |
| #include <openssl/ssl.h> |
| #include <openssl/err.h> |
| |
| #include "ssltestlib.h" |
| #include "testutil.h" |
| |
| static char *cert = NULL; |
| static char *privkey = NULL; |
| static unsigned int timer_cb_count; |
| |
| #define NUM_TESTS 2 |
| |
| |
| #define DUMMY_CERT_STATUS_LEN 12 |
| |
| static unsigned char certstatus[] = { |
| SSL3_RT_HANDSHAKE, /* Content type */ |
| 0xfe, 0xfd, /* Record version */ |
| 0, 1, /* Epoch */ |
| 0, 0, 0, 0, 0, 0x0f, /* Record sequence number */ |
| 0, DTLS1_HM_HEADER_LENGTH + DUMMY_CERT_STATUS_LEN - 2, |
| SSL3_MT_CERTIFICATE_STATUS, /* Cert Status handshake message type */ |
| 0, 0, DUMMY_CERT_STATUS_LEN, /* Message len */ |
| 0, 5, /* Message sequence */ |
| 0, 0, 0, /* Fragment offset */ |
| 0, 0, DUMMY_CERT_STATUS_LEN - 2, /* Fragment len */ |
| 0x80, 0x80, 0x80, 0x80, 0x80, |
| 0x80, 0x80, 0x80, 0x80, 0x80 /* Dummy data */ |
| }; |
| |
| #define RECORD_SEQUENCE 10 |
| |
| static unsigned int timer_cb(SSL *s, unsigned int timer_us) |
| { |
| ++timer_cb_count; |
| |
| if (timer_us == 0) |
| return 50000; |
| else |
| return 2 * timer_us; |
| } |
| |
| static int test_dtls_unprocessed(int testidx) |
| { |
| SSL_CTX *sctx = NULL, *cctx = NULL; |
| SSL *serverssl1 = NULL, *clientssl1 = NULL; |
| BIO *c_to_s_fbio, *c_to_s_mempacket; |
| int testresult = 0; |
| |
| timer_cb_count = 0; |
| |
| if (!TEST_true(create_ssl_ctx_pair(DTLS_server_method(), |
| DTLS_client_method(), |
| DTLS1_VERSION, DTLS_MAX_VERSION, |
| &sctx, &cctx, cert, privkey))) |
| return 0; |
| |
| if (!TEST_true(SSL_CTX_set_cipher_list(cctx, "AES128-SHA"))) |
| goto end; |
| |
| c_to_s_fbio = BIO_new(bio_f_tls_dump_filter()); |
| if (!TEST_ptr(c_to_s_fbio)) |
| goto end; |
| |
| /* BIO is freed by create_ssl_connection on error */ |
| if (!TEST_true(create_ssl_objects(sctx, cctx, &serverssl1, &clientssl1, |
| NULL, c_to_s_fbio))) |
| goto end; |
| |
| DTLS_set_timer_cb(clientssl1, timer_cb); |
| |
| if (testidx == 1) |
| certstatus[RECORD_SEQUENCE] = 0xff; |
| |
| /* |
| * Inject a dummy record from the next epoch. In test 0, this should never |
| * get used because the message sequence number is too big. In test 1 we set |
| * the record sequence number to be way off in the future. |
| */ |
| c_to_s_mempacket = SSL_get_wbio(clientssl1); |
| c_to_s_mempacket = BIO_next(c_to_s_mempacket); |
| mempacket_test_inject(c_to_s_mempacket, (char *)certstatus, |
| sizeof(certstatus), 1, INJECT_PACKET_IGNORE_REC_SEQ); |
| |
| /* |
| * Create the connection. We use "create_bare_ssl_connection" here so that |
| * we can force the connection to not do "SSL_read" once partly connected. |
| * We don't want to accidentally read the dummy records we injected because |
| * they will fail to decrypt. |
| */ |
| if (!TEST_true(create_bare_ssl_connection(serverssl1, clientssl1, |
| SSL_ERROR_NONE, 0))) |
| goto end; |
| |
| if (timer_cb_count == 0) { |
| printf("timer_callback was not called.\n"); |
| goto end; |
| } |
| |
| testresult = 1; |
| end: |
| SSL_free(serverssl1); |
| SSL_free(clientssl1); |
| SSL_CTX_free(sctx); |
| SSL_CTX_free(cctx); |
| |
| return testresult; |
| } |
| |
| #define CLI_TO_SRV_EPOCH_0_RECS 3 |
| #define CLI_TO_SRV_EPOCH_1_RECS 1 |
| #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) |
| # define SRV_TO_CLI_EPOCH_0_RECS 10 |
| #else |
| /* |
| * In this case we have no ServerKeyExchange message, because we don't have |
| * ECDHE or DHE. When it is present it gets fragmented into 3 records in this |
| * test. |
| */ |
| # define SRV_TO_CLI_EPOCH_0_RECS 9 |
| #endif |
| #define SRV_TO_CLI_EPOCH_1_RECS 1 |
| #define TOTAL_FULL_HAND_RECORDS \ |
| (CLI_TO_SRV_EPOCH_0_RECS + CLI_TO_SRV_EPOCH_1_RECS + \ |
| SRV_TO_CLI_EPOCH_0_RECS + SRV_TO_CLI_EPOCH_1_RECS) |
| |
| #define CLI_TO_SRV_RESUME_EPOCH_0_RECS 3 |
| #define CLI_TO_SRV_RESUME_EPOCH_1_RECS 1 |
| #define SRV_TO_CLI_RESUME_EPOCH_0_RECS 2 |
| #define SRV_TO_CLI_RESUME_EPOCH_1_RECS 1 |
| #define TOTAL_RESUME_HAND_RECORDS \ |
| (CLI_TO_SRV_RESUME_EPOCH_0_RECS + CLI_TO_SRV_RESUME_EPOCH_1_RECS + \ |
| SRV_TO_CLI_RESUME_EPOCH_0_RECS + SRV_TO_CLI_RESUME_EPOCH_1_RECS) |
| |
| #define TOTAL_RECORDS (TOTAL_FULL_HAND_RECORDS + TOTAL_RESUME_HAND_RECORDS) |
| |
| static int test_dtls_drop_records(int idx) |
| { |
| SSL_CTX *sctx = NULL, *cctx = NULL; |
| SSL *serverssl = NULL, *clientssl = NULL; |
| BIO *c_to_s_fbio, *mempackbio; |
| int testresult = 0; |
| int epoch = 0; |
| SSL_SESSION *sess = NULL; |
| int cli_to_srv_epoch0, cli_to_srv_epoch1, srv_to_cli_epoch0; |
| |
| if (!TEST_true(create_ssl_ctx_pair(DTLS_server_method(), |
| DTLS_client_method(), |
| DTLS1_VERSION, DTLS_MAX_VERSION, |
| &sctx, &cctx, cert, privkey))) |
| return 0; |
| |
| if (idx >= TOTAL_FULL_HAND_RECORDS) { |
| /* We're going to do a resumption handshake. Get a session first. */ |
| if (!TEST_true(create_ssl_objects(sctx, cctx, &serverssl, &clientssl, |
| NULL, NULL)) |
| || !TEST_true(create_ssl_connection(serverssl, clientssl, |
| SSL_ERROR_NONE)) |
| || !TEST_ptr(sess = SSL_get1_session(clientssl))) |
| goto end; |
| |
| SSL_shutdown(clientssl); |
| SSL_shutdown(serverssl); |
| SSL_free(serverssl); |
| SSL_free(clientssl); |
| serverssl = clientssl = NULL; |
| |
| cli_to_srv_epoch0 = CLI_TO_SRV_RESUME_EPOCH_0_RECS; |
| cli_to_srv_epoch1 = CLI_TO_SRV_RESUME_EPOCH_1_RECS; |
| srv_to_cli_epoch0 = SRV_TO_CLI_RESUME_EPOCH_0_RECS; |
| idx -= TOTAL_FULL_HAND_RECORDS; |
| } else { |
| cli_to_srv_epoch0 = CLI_TO_SRV_EPOCH_0_RECS; |
| cli_to_srv_epoch1 = CLI_TO_SRV_EPOCH_1_RECS; |
| srv_to_cli_epoch0 = SRV_TO_CLI_EPOCH_0_RECS; |
| } |
| |
| c_to_s_fbio = BIO_new(bio_f_tls_dump_filter()); |
| if (!TEST_ptr(c_to_s_fbio)) |
| goto end; |
| |
| /* BIO is freed by create_ssl_connection on error */ |
| if (!TEST_true(create_ssl_objects(sctx, cctx, &serverssl, &clientssl, |
| NULL, c_to_s_fbio))) |
| goto end; |
| |
| if (sess != NULL) { |
| if (!TEST_true(SSL_set_session(clientssl, sess))) |
| goto end; |
| } |
| |
| DTLS_set_timer_cb(clientssl, timer_cb); |
| DTLS_set_timer_cb(serverssl, timer_cb); |
| |
| /* Work out which record to drop based on the test number */ |
| if (idx >= cli_to_srv_epoch0 + cli_to_srv_epoch1) { |
| mempackbio = SSL_get_wbio(serverssl); |
| idx -= cli_to_srv_epoch0 + cli_to_srv_epoch1; |
| if (idx >= srv_to_cli_epoch0) { |
| epoch = 1; |
| idx -= srv_to_cli_epoch0; |
| } |
| } else { |
| mempackbio = SSL_get_wbio(clientssl); |
| if (idx >= cli_to_srv_epoch0) { |
| epoch = 1; |
| idx -= cli_to_srv_epoch0; |
| } |
| mempackbio = BIO_next(mempackbio); |
| } |
| BIO_ctrl(mempackbio, MEMPACKET_CTRL_SET_DROP_EPOCH, epoch, NULL); |
| BIO_ctrl(mempackbio, MEMPACKET_CTRL_SET_DROP_REC, idx, NULL); |
| |
| if (!TEST_true(create_ssl_connection(serverssl, clientssl, SSL_ERROR_NONE))) |
| goto end; |
| |
| if (sess != NULL && !TEST_true(SSL_session_reused(clientssl))) |
| goto end; |
| |
| /* If the test did what we planned then it should have dropped a record */ |
| if (!TEST_int_eq((int)BIO_ctrl(mempackbio, MEMPACKET_CTRL_GET_DROP_REC, 0, |
| NULL), -1)) |
| goto end; |
| |
| testresult = 1; |
| end: |
| SSL_SESSION_free(sess); |
| SSL_free(serverssl); |
| SSL_free(clientssl); |
| SSL_CTX_free(sctx); |
| SSL_CTX_free(cctx); |
| |
| return testresult; |
| } |
| |
| static const char dummy_cookie[] = "0123456"; |
| |
| static int generate_cookie_cb(SSL *ssl, unsigned char *cookie, |
| unsigned int *cookie_len) |
| { |
| memcpy(cookie, dummy_cookie, sizeof(dummy_cookie)); |
| *cookie_len = sizeof(dummy_cookie); |
| return 1; |
| } |
| |
| static int verify_cookie_cb(SSL *ssl, const unsigned char *cookie, |
| unsigned int cookie_len) |
| { |
| return TEST_mem_eq(cookie, cookie_len, dummy_cookie, sizeof(dummy_cookie)); |
| } |
| |
| static int test_cookie(void) |
| { |
| SSL_CTX *sctx = NULL, *cctx = NULL; |
| SSL *serverssl = NULL, *clientssl = NULL; |
| int testresult = 0; |
| |
| if (!TEST_true(create_ssl_ctx_pair(DTLS_server_method(), |
| DTLS_client_method(), |
| DTLS1_VERSION, DTLS_MAX_VERSION, |
| &sctx, &cctx, cert, privkey))) |
| return 0; |
| |
| SSL_CTX_set_options(sctx, SSL_OP_COOKIE_EXCHANGE); |
| SSL_CTX_set_cookie_generate_cb(sctx, generate_cookie_cb); |
| SSL_CTX_set_cookie_verify_cb(sctx, verify_cookie_cb); |
| |
| if (!TEST_true(create_ssl_objects(sctx, cctx, &serverssl, &clientssl, |
| NULL, NULL)) |
| || !TEST_true(create_ssl_connection(serverssl, clientssl, |
| SSL_ERROR_NONE))) |
| goto end; |
| |
| testresult = 1; |
| end: |
| SSL_free(serverssl); |
| SSL_free(clientssl); |
| SSL_CTX_free(sctx); |
| SSL_CTX_free(cctx); |
| |
| return testresult; |
| } |
| |
| static int test_dtls_duplicate_records(void) |
| { |
| SSL_CTX *sctx = NULL, *cctx = NULL; |
| SSL *serverssl = NULL, *clientssl = NULL; |
| int testresult = 0; |
| |
| if (!TEST_true(create_ssl_ctx_pair(DTLS_server_method(), |
| DTLS_client_method(), |
| DTLS1_VERSION, DTLS_MAX_VERSION, |
| &sctx, &cctx, cert, privkey))) |
| return 0; |
| |
| if (!TEST_true(create_ssl_objects(sctx, cctx, &serverssl, &clientssl, |
| NULL, NULL))) |
| goto end; |
| |
| DTLS_set_timer_cb(clientssl, timer_cb); |
| DTLS_set_timer_cb(serverssl, timer_cb); |
| |
| BIO_ctrl(SSL_get_wbio(clientssl), MEMPACKET_CTRL_SET_DUPLICATE_REC, 1, NULL); |
| BIO_ctrl(SSL_get_wbio(serverssl), MEMPACKET_CTRL_SET_DUPLICATE_REC, 1, NULL); |
| |
| if (!TEST_true(create_ssl_connection(serverssl, clientssl, SSL_ERROR_NONE))) |
| goto end; |
| |
| testresult = 1; |
| end: |
| SSL_free(serverssl); |
| SSL_free(clientssl); |
| SSL_CTX_free(sctx); |
| SSL_CTX_free(cctx); |
| |
| return testresult; |
| } |
| |
| /* |
| * Test that swapping an app data record so that it is received before the |
| * Finished message still works. |
| */ |
| static int test_swap_app_data(void) |
| { |
| SSL_CTX *sctx = NULL, *cctx = NULL; |
| SSL *sssl = NULL, *cssl = NULL; |
| int testresult = 0; |
| BIO *bio; |
| char msg[] = { 0x00, 0x01, 0x02, 0x03 }; |
| char buf[10]; |
| |
| if (!TEST_true(create_ssl_ctx_pair(DTLS_server_method(), |
| DTLS_client_method(), |
| DTLS1_VERSION, 0, |
| &sctx, &cctx, cert, privkey))) |
| return 0; |
| |
| #ifndef OPENSSL_NO_DTLS1_2 |
| if (!TEST_true(SSL_CTX_set_cipher_list(cctx, "AES128-SHA"))) |
| goto end; |
| #else |
| /* Default sigalgs are SHA1 based in <DTLS1.2 which is in security level 0 */ |
| if (!TEST_true(SSL_CTX_set_cipher_list(sctx, "AES128-SHA:@SECLEVEL=0")) |
| || !TEST_true(SSL_CTX_set_cipher_list(cctx, |
| "AES128-SHA:@SECLEVEL=0"))) |
| goto end; |
| #endif |
| |
| if (!TEST_true(create_ssl_objects(sctx, cctx, &sssl, &cssl, |
| NULL, NULL))) |
| goto end; |
| |
| /* Send flight 1: ClientHello */ |
| if (!TEST_int_le(SSL_connect(cssl), 0)) |
| goto end; |
| |
| /* Recv flight 1, send flight 2: ServerHello, Certificate, ServerHelloDone */ |
| if (!TEST_int_le(SSL_accept(sssl), 0)) |
| goto end; |
| |
| /* Recv flight 2, send flight 3: ClientKeyExchange, CCS, Finished */ |
| if (!TEST_int_le(SSL_connect(cssl), 0)) |
| goto end; |
| |
| /* Recv flight 3, send flight 4: datagram 1(NST, CCS) datagram 2(Finished) */ |
| if (!TEST_int_gt(SSL_accept(sssl), 0)) |
| goto end; |
| |
| /* Send flight 5: app data */ |
| if (!TEST_int_eq(SSL_write(sssl, msg, sizeof(msg)), (int)sizeof(msg))) |
| goto end; |
| |
| bio = SSL_get_wbio(sssl); |
| if (!TEST_ptr(bio) |
| || !TEST_true(mempacket_swap_recent(bio))) |
| goto end; |
| |
| /* |
| * Recv flight 4 (datagram 1): NST, CCS, + flight 5: app data |
| * + flight 4 (datagram 2): Finished |
| */ |
| if (!TEST_int_gt(SSL_connect(cssl), 0)) |
| goto end; |
| |
| /* The app data should be buffered already */ |
| if (!TEST_int_eq(SSL_pending(cssl), (int)sizeof(msg)) |
| || !TEST_true(SSL_has_pending(cssl))) |
| goto end; |
| |
| /* |
| * Recv flight 5 (app data) |
| * We already buffered this so it should be available. |
| */ |
| if (!TEST_int_eq(SSL_read(cssl, buf, sizeof(buf)), (int)sizeof(msg))) |
| goto end; |
| |
| testresult = 1; |
| end: |
| SSL_free(cssl); |
| SSL_free(sssl); |
| SSL_CTX_free(cctx); |
| SSL_CTX_free(sctx); |
| return testresult; |
| } |
| |
| int setup_tests(void) |
| { |
| if (!TEST_ptr(cert = test_get_argument(0)) |
| || !TEST_ptr(privkey = test_get_argument(1))) |
| return 0; |
| |
| ADD_ALL_TESTS(test_dtls_unprocessed, NUM_TESTS); |
| ADD_ALL_TESTS(test_dtls_drop_records, TOTAL_RECORDS); |
| ADD_TEST(test_cookie); |
| ADD_TEST(test_dtls_duplicate_records); |
| ADD_TEST(test_swap_app_data); |
| |
| return 1; |
| } |
| |
| void cleanup_tests(void) |
| { |
| bio_f_tls_dump_filter_free(); |
| bio_s_mempacket_test_free(); |
| } |