| /* |
| * Copyright 2015-2021 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/opensslconf.h> |
| #include <openssl/bio.h> |
| #include <openssl/crypto.h> |
| #include <openssl/evp.h> |
| #include <openssl/ssl.h> |
| #include <openssl/err.h> |
| #include <time.h> |
| |
| #include "../ssl/packet_local.h" |
| |
| #include "testutil.h" |
| |
| #define CLIENT_VERSION_LEN 2 |
| |
| #define TOTAL_NUM_TESTS 4 |
| |
| /* |
| * Test that explicitly setting ticket data results in it appearing in the |
| * ClientHello for a negotiated SSL/TLS version |
| */ |
| #define TEST_SET_SESSION_TICK_DATA_VER_NEG 0 |
| /* Enable padding and make sure ClientHello is long enough to require it */ |
| #define TEST_ADD_PADDING 1 |
| /* Enable padding and make sure ClientHello is short enough to not need it */ |
| #define TEST_PADDING_NOT_NEEDED 2 |
| /* |
| * Enable padding and add a PSK to the ClientHello (this will also ensure the |
| * ClientHello is long enough to need padding) |
| */ |
| #define TEST_ADD_PADDING_AND_PSK 3 |
| |
| #define F5_WORKAROUND_MIN_MSG_LEN 0x7f |
| #define F5_WORKAROUND_MAX_MSG_LEN 0x200 |
| |
| static const char *sessionfile = NULL; |
| /* Dummy ALPN protocols used to pad out the size of the ClientHello */ |
| /* ASCII 'O' = 79 = 0x4F = EBCDIC '|'*/ |
| #ifdef CHARSET_EBCDIC |
| static const char alpn_prots[] = |
| "|1234567890123456789012345678901234567890123456789012345678901234567890123456789" |
| "|1234567890123456789012345678901234567890123456789012345678901234567890123456789"; |
| #else |
| static const char alpn_prots[] = |
| "O1234567890123456789012345678901234567890123456789012345678901234567890123456789" |
| "O1234567890123456789012345678901234567890123456789012345678901234567890123456789"; |
| #endif |
| |
| static int test_client_hello(int currtest) |
| { |
| SSL_CTX *ctx; |
| SSL *con = NULL; |
| BIO *rbio; |
| BIO *wbio; |
| long len; |
| unsigned char *data; |
| PACKET pkt = {0}, pkt2 = {0}, pkt3 = {0}; |
| char *dummytick = "Hello World!"; |
| unsigned int type = 0; |
| int testresult = 0; |
| size_t msglen; |
| BIO *sessbio = NULL; |
| SSL_SESSION *sess = NULL; |
| |
| #ifdef OPENSSL_NO_TLS1_3 |
| if (currtest == TEST_ADD_PADDING_AND_PSK) |
| return 1; |
| #endif |
| |
| /* |
| * For each test set up an SSL_CTX and SSL and see what ClientHello gets |
| * produced when we try to connect |
| */ |
| ctx = SSL_CTX_new(TLS_method()); |
| if (!TEST_ptr(ctx)) |
| goto end; |
| if (!TEST_true(SSL_CTX_set_max_proto_version(ctx, TLS_MAX_VERSION))) |
| goto end; |
| |
| switch(currtest) { |
| case TEST_SET_SESSION_TICK_DATA_VER_NEG: |
| #if !defined(OPENSSL_NO_TLS1_3) && defined(OPENSSL_NO_TLS1_2) |
| /* TLSv1.3 is enabled and TLSv1.2 is disabled so can't do this test */ |
| return 1; |
| #else |
| /* Testing for session tickets <= TLS1.2; not relevant for 1.3 */ |
| if (!TEST_true(SSL_CTX_set_max_proto_version(ctx, TLS1_2_VERSION))) |
| goto end; |
| #endif |
| break; |
| |
| case TEST_ADD_PADDING_AND_PSK: |
| /* |
| * In this case we're doing TLSv1.3 and we're sending a PSK so the |
| * ClientHello is already going to be quite long. To avoid getting one |
| * that is too long for this test we use a restricted ciphersuite list |
| */ |
| if (!TEST_false(SSL_CTX_set_cipher_list(ctx, ""))) |
| goto end; |
| ERR_clear_error(); |
| /* Fall through */ |
| case TEST_ADD_PADDING: |
| case TEST_PADDING_NOT_NEEDED: |
| SSL_CTX_set_options(ctx, SSL_OP_TLSEXT_PADDING); |
| /* Make sure we get a consistent size across TLS versions */ |
| SSL_CTX_clear_options(ctx, SSL_OP_ENABLE_MIDDLEBOX_COMPAT); |
| /* |
| * Add some dummy ALPN protocols so that the ClientHello is at least |
| * F5_WORKAROUND_MIN_MSG_LEN bytes long - meaning padding will be |
| * needed. |
| */ |
| if (currtest == TEST_ADD_PADDING) { |
| if (!TEST_false(SSL_CTX_set_alpn_protos(ctx, |
| (unsigned char *)alpn_prots, |
| sizeof(alpn_prots) - 1))) |
| goto end; |
| /* |
| * Otherwise we need to make sure we have a small enough message to |
| * not need padding. |
| */ |
| } else if (!TEST_true(SSL_CTX_set_cipher_list(ctx, |
| "AES128-SHA")) |
| || !TEST_true(SSL_CTX_set_ciphersuites(ctx, |
| "TLS_AES_128_GCM_SHA256"))) { |
| goto end; |
| } |
| break; |
| |
| default: |
| goto end; |
| } |
| |
| con = SSL_new(ctx); |
| if (!TEST_ptr(con)) |
| goto end; |
| |
| if (currtest == TEST_ADD_PADDING_AND_PSK) { |
| sessbio = BIO_new_file(sessionfile, "r"); |
| if (!TEST_ptr(sessbio)) { |
| TEST_info("Unable to open session.pem"); |
| goto end; |
| } |
| sess = PEM_read_bio_SSL_SESSION(sessbio, NULL, NULL, NULL); |
| if (!TEST_ptr(sess)) { |
| TEST_info("Unable to load SSL_SESSION"); |
| goto end; |
| } |
| /* |
| * We reset the creation time so that we don't discard the session as |
| * too old. |
| */ |
| if (!TEST_true(SSL_SESSION_set_time(sess, (long)time(NULL))) |
| || !TEST_true(SSL_set_session(con, sess))) |
| goto end; |
| } |
| |
| rbio = BIO_new(BIO_s_mem()); |
| wbio = BIO_new(BIO_s_mem()); |
| if (!TEST_ptr(rbio)|| !TEST_ptr(wbio)) { |
| BIO_free(rbio); |
| BIO_free(wbio); |
| goto end; |
| } |
| |
| SSL_set_bio(con, rbio, wbio); |
| SSL_set_connect_state(con); |
| |
| if (currtest == TEST_SET_SESSION_TICK_DATA_VER_NEG) { |
| if (!TEST_true(SSL_set_session_ticket_ext(con, dummytick, |
| strlen(dummytick)))) |
| goto end; |
| } |
| |
| if (!TEST_int_le(SSL_connect(con), 0)) { |
| /* This shouldn't succeed because we don't have a server! */ |
| goto end; |
| } |
| |
| len = BIO_get_mem_data(wbio, (char **)&data); |
| if (!TEST_true(PACKET_buf_init(&pkt, data, len)) |
| /* Skip the record header */ |
| || !PACKET_forward(&pkt, SSL3_RT_HEADER_LENGTH)) |
| goto end; |
| |
| msglen = PACKET_remaining(&pkt); |
| |
| /* Skip the handshake message header */ |
| if (!TEST_true(PACKET_forward(&pkt, SSL3_HM_HEADER_LENGTH)) |
| /* Skip client version and random */ |
| || !TEST_true(PACKET_forward(&pkt, CLIENT_VERSION_LEN |
| + SSL3_RANDOM_SIZE)) |
| /* Skip session id */ |
| || !TEST_true(PACKET_get_length_prefixed_1(&pkt, &pkt2)) |
| /* Skip ciphers */ |
| || !TEST_true(PACKET_get_length_prefixed_2(&pkt, &pkt2)) |
| /* Skip compression */ |
| || !TEST_true(PACKET_get_length_prefixed_1(&pkt, &pkt2)) |
| /* Extensions len */ |
| || !TEST_true(PACKET_as_length_prefixed_2(&pkt, &pkt2))) |
| goto end; |
| |
| /* Loop through all extensions */ |
| while (PACKET_remaining(&pkt2)) { |
| |
| if (!TEST_true(PACKET_get_net_2(&pkt2, &type)) |
| || !TEST_true(PACKET_get_length_prefixed_2(&pkt2, &pkt3))) |
| goto end; |
| |
| if (type == TLSEXT_TYPE_session_ticket) { |
| if (currtest == TEST_SET_SESSION_TICK_DATA_VER_NEG) { |
| if (TEST_true(PACKET_equal(&pkt3, dummytick, |
| strlen(dummytick)))) { |
| /* Ticket data is as we expected */ |
| testresult = 1; |
| } |
| goto end; |
| } |
| } |
| if (type == TLSEXT_TYPE_padding) { |
| if (!TEST_false(currtest == TEST_PADDING_NOT_NEEDED)) |
| goto end; |
| else if (TEST_true(currtest == TEST_ADD_PADDING |
| || currtest == TEST_ADD_PADDING_AND_PSK)) |
| testresult = TEST_true(msglen == F5_WORKAROUND_MAX_MSG_LEN); |
| } |
| } |
| |
| if (currtest == TEST_PADDING_NOT_NEEDED) |
| testresult = 1; |
| |
| end: |
| SSL_free(con); |
| SSL_CTX_free(ctx); |
| SSL_SESSION_free(sess); |
| BIO_free(sessbio); |
| |
| return testresult; |
| } |
| |
| int setup_tests(void) |
| { |
| if (!TEST_ptr(sessionfile = test_get_argument(0))) |
| return 0; |
| |
| ADD_ALL_TESTS(test_client_hello, TOTAL_NUM_TESTS); |
| return 1; |
| } |