243 lines
6.7 KiB
C
243 lines
6.7 KiB
C
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/*
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* Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved.
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* Copyright 2017 BaishanCloud. All rights reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <string.h>
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#include <openssl/opensslconf.h>
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#include <openssl/bio.h>
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#include <openssl/crypto.h>
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#include <openssl/evp.h>
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#include <openssl/ssl.h>
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#include <openssl/err.h>
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#include <time.h>
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#include "../ssl/packet_local.h"
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#include "testutil.h"
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#include "internal/nelem.h"
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#include "ssltestlib.h"
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#define CLIENT_VERSION_LEN 2
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static const char *host = "dummy-host";
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static char *cert = NULL;
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static char *privkey = NULL;
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static int get_sni_from_client_hello(BIO *bio, char **sni)
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{
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long len;
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unsigned char *data;
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PACKET pkt = {0}, pkt2 = {0}, pkt3 = {0}, pkt4 = {0}, pkt5 = {0};
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unsigned int servname_type = 0, type = 0;
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int ret = 0;
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len = BIO_get_mem_data(bio, (char **)&data);
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if (!TEST_true(PACKET_buf_init(&pkt, data, len))
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/* Skip the record header */
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|| !PACKET_forward(&pkt, SSL3_RT_HEADER_LENGTH)
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/* Skip the handshake message header */
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|| !TEST_true(PACKET_forward(&pkt, SSL3_HM_HEADER_LENGTH))
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/* Skip client version and random */
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|| !TEST_true(PACKET_forward(&pkt, CLIENT_VERSION_LEN
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+ SSL3_RANDOM_SIZE))
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/* Skip session id */
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|| !TEST_true(PACKET_get_length_prefixed_1(&pkt, &pkt2))
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/* Skip ciphers */
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|| !TEST_true(PACKET_get_length_prefixed_2(&pkt, &pkt2))
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/* Skip compression */
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|| !TEST_true(PACKET_get_length_prefixed_1(&pkt, &pkt2))
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/* Extensions len */
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|| !TEST_true(PACKET_as_length_prefixed_2(&pkt, &pkt2)))
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goto end;
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/* Loop through all extensions for SNI */
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while (PACKET_remaining(&pkt2)) {
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if (!TEST_true(PACKET_get_net_2(&pkt2, &type))
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|| !TEST_true(PACKET_get_length_prefixed_2(&pkt2, &pkt3)))
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goto end;
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if (type == TLSEXT_TYPE_server_name) {
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if (!TEST_true(PACKET_get_length_prefixed_2(&pkt3, &pkt4))
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|| !TEST_uint_ne(PACKET_remaining(&pkt4), 0)
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|| !TEST_true(PACKET_get_1(&pkt4, &servname_type))
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|| !TEST_uint_eq(servname_type, TLSEXT_NAMETYPE_host_name)
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|| !TEST_true(PACKET_get_length_prefixed_2(&pkt4, &pkt5))
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|| !TEST_uint_le(PACKET_remaining(&pkt5), TLSEXT_MAXLEN_host_name)
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|| !TEST_false(PACKET_contains_zero_byte(&pkt5))
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|| !TEST_true(PACKET_strndup(&pkt5, sni)))
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goto end;
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ret = 1;
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goto end;
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}
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}
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end:
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return ret;
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}
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static int client_setup_sni_before_state(void)
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{
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SSL_CTX *ctx;
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SSL *con = NULL;
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BIO *rbio;
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BIO *wbio;
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char *hostname = NULL;
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int ret = 0;
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/* use TLS_method to blur 'side' */
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ctx = SSL_CTX_new(TLS_method());
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if (!TEST_ptr(ctx))
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goto end;
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con = SSL_new(ctx);
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if (!TEST_ptr(con))
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goto end;
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/* set SNI before 'client side' is set */
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SSL_set_tlsext_host_name(con, host);
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rbio = BIO_new(BIO_s_mem());
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wbio = BIO_new(BIO_s_mem());
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if (!TEST_ptr(rbio)|| !TEST_ptr(wbio)) {
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BIO_free(rbio);
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BIO_free(wbio);
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goto end;
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}
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SSL_set_bio(con, rbio, wbio);
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if (!TEST_int_le(SSL_connect(con), 0))
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/* This shouldn't succeed because we don't have a server! */
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goto end;
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if (!TEST_true(get_sni_from_client_hello(wbio, &hostname)))
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/* no SNI in client hello */
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goto end;
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if (!TEST_str_eq(hostname, host))
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/* incorrect SNI value */
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goto end;
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ret = 1;
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end:
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OPENSSL_free(hostname);
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SSL_free(con);
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SSL_CTX_free(ctx);
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return ret;
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}
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static int client_setup_sni_after_state(void)
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{
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SSL_CTX *ctx;
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SSL *con = NULL;
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BIO *rbio;
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BIO *wbio;
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char *hostname = NULL;
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int ret = 0;
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/* use TLS_method to blur 'side' */
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ctx = SSL_CTX_new(TLS_method());
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if (!TEST_ptr(ctx))
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goto end;
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con = SSL_new(ctx);
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if (!TEST_ptr(con))
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goto end;
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rbio = BIO_new(BIO_s_mem());
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wbio = BIO_new(BIO_s_mem());
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if (!TEST_ptr(rbio)|| !TEST_ptr(wbio)) {
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BIO_free(rbio);
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BIO_free(wbio);
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goto end;
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}
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SSL_set_bio(con, rbio, wbio);
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SSL_set_connect_state(con);
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/* set SNI after 'client side' is set */
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SSL_set_tlsext_host_name(con, host);
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if (!TEST_int_le(SSL_connect(con), 0))
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/* This shouldn't succeed because we don't have a server! */
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goto end;
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if (!TEST_true(get_sni_from_client_hello(wbio, &hostname)))
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/* no SNI in client hello */
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goto end;
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if (!TEST_str_eq(hostname, host))
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/* incorrect SNI value */
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goto end;
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ret = 1;
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end:
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OPENSSL_free(hostname);
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SSL_free(con);
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SSL_CTX_free(ctx);
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return ret;
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}
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static int server_setup_sni(void)
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{
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SSL_CTX *cctx = NULL, *sctx = NULL;
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SSL *clientssl = NULL, *serverssl = NULL;
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int testresult = 0;
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if (!TEST_true(create_ssl_ctx_pair(TLS_server_method(),
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TLS_client_method(),
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TLS1_VERSION, TLS_MAX_VERSION,
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&sctx, &cctx, cert, privkey))
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|| !TEST_true(create_ssl_objects(sctx, cctx, &serverssl, &clientssl,
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NULL, NULL)))
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goto end;
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/* set SNI at server side */
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SSL_set_tlsext_host_name(serverssl, host);
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if (!TEST_true(create_ssl_connection(serverssl, clientssl, SSL_ERROR_NONE)))
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goto end;
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if (!TEST_ptr_null(SSL_get_servername(serverssl,
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TLSEXT_NAMETYPE_host_name))) {
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/* SNI should have been cleared during handshake */
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goto end;
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}
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testresult = 1;
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end:
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SSL_free(serverssl);
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SSL_free(clientssl);
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SSL_CTX_free(sctx);
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SSL_CTX_free(cctx);
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return testresult;
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}
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typedef int (*sni_test_fn)(void);
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static sni_test_fn sni_test_fns[3] = {
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client_setup_sni_before_state,
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client_setup_sni_after_state,
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server_setup_sni
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};
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static int test_servername(int test)
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{
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/*
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* For each test set up an SSL_CTX and SSL and see
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* what SNI behaves.
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*/
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return sni_test_fns[test]();
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}
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int setup_tests(void)
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{
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if (!TEST_ptr(cert = test_get_argument(0))
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|| !TEST_ptr(privkey = test_get_argument(1)))
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return 0;
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ADD_ALL_TESTS(test_servername, OSSL_NELEM(sni_test_fns));
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return 1;
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}
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