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- /*
- * Copyright 2017-2020 The OpenSSL Project Authors. All Rights Reserved.
- * Copyright 2017 BaishanCloud. All rights reserved.
- *
- * Licensed under the Apache License 2.0 (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 "internal/packet.h"
- #include "testutil.h"
- #include "internal/nelem.h"
- #include "helpers/ssltestlib.h"
- #define CLIENT_VERSION_LEN 2
- static const char *host = "dummy-host";
- static char *cert = NULL;
- static char *privkey = NULL;
- static int get_sni_from_client_hello(BIO *bio, char **sni)
- {
- long len;
- unsigned char *data;
- PACKET pkt, pkt2, pkt3, pkt4, pkt5;
- unsigned int servname_type = 0, type = 0;
- int ret = 0;
- memset(&pkt, 0, sizeof(pkt));
- memset(&pkt2, 0, sizeof(pkt2));
- memset(&pkt3, 0, sizeof(pkt3));
- memset(&pkt4, 0, sizeof(pkt4));
- memset(&pkt5, 0, sizeof(pkt5));
- len = BIO_get_mem_data(bio, (char **)&data);
- if (!TEST_true(PACKET_buf_init(&pkt, data, len))
- /* Skip the record header */
- || !PACKET_forward(&pkt, SSL3_RT_HEADER_LENGTH)
- /* Skip the handshake message header */
- || !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 for SNI */
- 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_server_name) {
- if (!TEST_true(PACKET_get_length_prefixed_2(&pkt3, &pkt4))
- || !TEST_uint_ne(PACKET_remaining(&pkt4), 0)
- || !TEST_true(PACKET_get_1(&pkt4, &servname_type))
- || !TEST_uint_eq(servname_type, TLSEXT_NAMETYPE_host_name)
- || !TEST_true(PACKET_get_length_prefixed_2(&pkt4, &pkt5))
- || !TEST_uint_le(PACKET_remaining(&pkt5), TLSEXT_MAXLEN_host_name)
- || !TEST_false(PACKET_contains_zero_byte(&pkt5))
- || !TEST_true(PACKET_strndup(&pkt5, sni)))
- goto end;
- ret = 1;
- goto end;
- }
- }
- end:
- return ret;
- }
- static int client_setup_sni_before_state(void)
- {
- SSL_CTX *ctx;
- SSL *con = NULL;
- BIO *rbio;
- BIO *wbio;
- char *hostname = NULL;
- int ret = 0;
- /* use TLS_method to blur 'side' */
- ctx = SSL_CTX_new(TLS_method());
- if (!TEST_ptr(ctx))
- goto end;
- con = SSL_new(ctx);
- if (!TEST_ptr(con))
- goto end;
- /* set SNI before 'client side' is set */
- SSL_set_tlsext_host_name(con, host);
- 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);
- if (!TEST_int_le(SSL_connect(con), 0))
- /* This shouldn't succeed because we don't have a server! */
- goto end;
- if (!TEST_true(get_sni_from_client_hello(wbio, &hostname)))
- /* no SNI in client hello */
- goto end;
- if (!TEST_str_eq(hostname, host))
- /* incorrect SNI value */
- goto end;
- ret = 1;
- end:
- OPENSSL_free(hostname);
- SSL_free(con);
- SSL_CTX_free(ctx);
- return ret;
- }
- static int client_setup_sni_after_state(void)
- {
- SSL_CTX *ctx;
- SSL *con = NULL;
- BIO *rbio;
- BIO *wbio;
- char *hostname = NULL;
- int ret = 0;
- /* use TLS_method to blur 'side' */
- ctx = SSL_CTX_new(TLS_method());
- if (!TEST_ptr(ctx))
- goto end;
- con = SSL_new(ctx);
- if (!TEST_ptr(con))
- 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);
- /* set SNI after 'client side' is set */
- SSL_set_tlsext_host_name(con, host);
- if (!TEST_int_le(SSL_connect(con), 0))
- /* This shouldn't succeed because we don't have a server! */
- goto end;
- if (!TEST_true(get_sni_from_client_hello(wbio, &hostname)))
- /* no SNI in client hello */
- goto end;
- if (!TEST_str_eq(hostname, host))
- /* incorrect SNI value */
- goto end;
- ret = 1;
- end:
- OPENSSL_free(hostname);
- SSL_free(con);
- SSL_CTX_free(ctx);
- return ret;
- }
- static int server_setup_sni(void)
- {
- SSL_CTX *cctx = NULL, *sctx = NULL;
- SSL *clientssl = NULL, *serverssl = NULL;
- int testresult = 0;
- if (!TEST_true(create_ssl_ctx_pair(NULL, TLS_server_method(),
- TLS_client_method(),
- TLS1_VERSION, 0,
- &sctx, &cctx, cert, privkey))
- || !TEST_true(create_ssl_objects(sctx, cctx, &serverssl, &clientssl,
- NULL, NULL)))
- goto end;
- /* set SNI at server side */
- SSL_set_tlsext_host_name(serverssl, host);
- if (!TEST_true(create_ssl_connection(serverssl, clientssl, SSL_ERROR_NONE)))
- goto end;
- if (!TEST_ptr_null(SSL_get_servername(serverssl,
- TLSEXT_NAMETYPE_host_name))) {
- /* SNI should have been cleared during handshake */
- goto end;
- }
- testresult = 1;
- end:
- SSL_free(serverssl);
- SSL_free(clientssl);
- SSL_CTX_free(sctx);
- SSL_CTX_free(cctx);
- return testresult;
- }
- typedef int (*sni_test_fn)(void);
- static sni_test_fn sni_test_fns[3] = {
- client_setup_sni_before_state,
- client_setup_sni_after_state,
- server_setup_sni
- };
- static int test_servername(int test)
- {
- /*
- * For each test set up an SSL_CTX and SSL and see
- * what SNI behaves.
- */
- return sni_test_fns[test]();
- }
- int setup_tests(void)
- {
- if (!test_skip_common_options()) {
- TEST_error("Error parsing test options\n");
- return 0;
- }
- if (!TEST_ptr(cert = test_get_argument(0))
- || !TEST_ptr(privkey = test_get_argument(1)))
- return 0;
- ADD_ALL_TESTS(test_servername, OSSL_NELEM(sni_test_fns));
- return 1;
- }
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