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190b9a03 PY |
1 | /* |
2 | * Copyright 2017 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * Copyright 2017 BaishanCloud. All rights reserved. | |
4 | * | |
5 | * Licensed under the OpenSSL license (the "License"). You may not use | |
6 | * this file except in compliance with the License. You can obtain a copy | |
7 | * in the file LICENSE in the source distribution or at | |
8 | * https://www.openssl.org/source/license.html | |
9 | */ | |
10 | ||
11 | #include <string.h> | |
12 | ||
13 | #include <openssl/opensslconf.h> | |
14 | #include <openssl/bio.h> | |
15 | #include <openssl/crypto.h> | |
16 | #include <openssl/evp.h> | |
17 | #include <openssl/ssl.h> | |
18 | #include <openssl/err.h> | |
19 | #include <time.h> | |
20 | ||
21 | #include "../ssl/packet_locl.h" | |
22 | ||
23 | #include "testutil.h" | |
176db6dc | 24 | #include "internal/nelem.h" |
190b9a03 PY |
25 | |
26 | #define CLIENT_VERSION_LEN 2 | |
27 | ||
28 | static const char *host = "dummy-host"; | |
29 | ||
30 | static int get_sni_from_client_hello(BIO *bio, char **sni) | |
31 | { | |
32 | long len; | |
33 | unsigned char *data; | |
34 | PACKET pkt = {0}, pkt2 = {0}, pkt3 = {0}, pkt4 = {0}, pkt5 = {0}; | |
35 | unsigned int servname_type = 0, type = 0; | |
36 | int ret = 0; | |
37 | ||
38 | len = BIO_get_mem_data(bio, (char **)&data); | |
39 | if (!TEST_true(PACKET_buf_init(&pkt, data, len)) | |
40 | /* Skip the record header */ | |
41 | || !PACKET_forward(&pkt, SSL3_RT_HEADER_LENGTH) | |
42 | /* Skip the handshake message header */ | |
43 | || !TEST_true(PACKET_forward(&pkt, SSL3_HM_HEADER_LENGTH)) | |
44 | /* Skip client version and random */ | |
45 | || !TEST_true(PACKET_forward(&pkt, CLIENT_VERSION_LEN | |
46 | + SSL3_RANDOM_SIZE)) | |
47 | /* Skip session id */ | |
48 | || !TEST_true(PACKET_get_length_prefixed_1(&pkt, &pkt2)) | |
49 | /* Skip ciphers */ | |
50 | || !TEST_true(PACKET_get_length_prefixed_2(&pkt, &pkt2)) | |
51 | /* Skip compression */ | |
52 | || !TEST_true(PACKET_get_length_prefixed_1(&pkt, &pkt2)) | |
53 | /* Extensions len */ | |
54 | || !TEST_true(PACKET_as_length_prefixed_2(&pkt, &pkt2))) | |
55 | goto end; | |
56 | ||
57 | /* Loop through all extensions for SNI */ | |
58 | while (PACKET_remaining(&pkt2)) { | |
59 | if (!TEST_true(PACKET_get_net_2(&pkt2, &type)) | |
60 | || !TEST_true(PACKET_get_length_prefixed_2(&pkt2, &pkt3))) | |
61 | goto end; | |
62 | if (type == TLSEXT_TYPE_server_name) { | |
63 | if (!TEST_true(PACKET_get_length_prefixed_2(&pkt3, &pkt4)) | |
64 | || !TEST_uint_ne(PACKET_remaining(&pkt4), 0) | |
65 | || !TEST_true(PACKET_get_1(&pkt4, &servname_type)) | |
66 | || !TEST_uint_eq(servname_type, TLSEXT_NAMETYPE_host_name) | |
67 | || !TEST_true(PACKET_get_length_prefixed_2(&pkt4, &pkt5)) | |
68 | || !TEST_uint_le(PACKET_remaining(&pkt5), TLSEXT_MAXLEN_host_name) | |
69 | || !TEST_false(PACKET_contains_zero_byte(&pkt5)) | |
70 | || !TEST_true(PACKET_strndup(&pkt5, sni))) | |
71 | goto end; | |
72 | ret = 1; | |
73 | goto end; | |
74 | } | |
75 | } | |
76 | end: | |
77 | return ret; | |
78 | } | |
79 | ||
31a80694 | 80 | static int client_setup_sni_before_state(void) |
190b9a03 PY |
81 | { |
82 | SSL_CTX *ctx; | |
83 | SSL *con = NULL; | |
84 | BIO *rbio; | |
85 | BIO *wbio; | |
86 | char *hostname = NULL; | |
87 | int ret = 0; | |
88 | ||
89 | /* use TLS_method to blur 'side' */ | |
90 | ctx = SSL_CTX_new(TLS_method()); | |
91 | if (!TEST_ptr(ctx)) | |
92 | goto end; | |
93 | ||
94 | con = SSL_new(ctx); | |
95 | if (!TEST_ptr(con)) | |
96 | goto end; | |
97 | ||
98 | /* set SNI before 'client side' is set */ | |
99 | SSL_set_tlsext_host_name(con, host); | |
100 | ||
101 | rbio = BIO_new(BIO_s_mem()); | |
102 | wbio = BIO_new(BIO_s_mem()); | |
103 | if (!TEST_ptr(rbio)|| !TEST_ptr(wbio)) { | |
104 | BIO_free(rbio); | |
105 | BIO_free(wbio); | |
106 | goto end; | |
107 | } | |
108 | ||
109 | SSL_set_bio(con, rbio, wbio); | |
110 | ||
111 | if (!TEST_int_le(SSL_connect(con), 0)) | |
112 | /* This shouldn't succeed because we don't have a server! */ | |
113 | goto end; | |
114 | if (!TEST_true(get_sni_from_client_hello(wbio, &hostname))) | |
115 | /* no SNI in client hello */ | |
116 | goto end; | |
117 | if (!TEST_str_eq(hostname, host)) | |
118 | /* incorrect SNI value */ | |
119 | goto end; | |
120 | ret = 1; | |
121 | end: | |
122 | OPENSSL_free(hostname); | |
123 | SSL_free(con); | |
124 | SSL_CTX_free(ctx); | |
125 | return ret; | |
126 | } | |
127 | ||
31a80694 | 128 | static int client_setup_sni_after_state(void) |
190b9a03 PY |
129 | { |
130 | SSL_CTX *ctx; | |
131 | SSL *con = NULL; | |
132 | BIO *rbio; | |
133 | BIO *wbio; | |
134 | char *hostname = NULL; | |
135 | int ret = 0; | |
136 | ||
137 | /* use TLS_method to blur 'side' */ | |
138 | ctx = SSL_CTX_new(TLS_method()); | |
139 | if (!TEST_ptr(ctx)) | |
140 | goto end; | |
141 | ||
142 | con = SSL_new(ctx); | |
143 | if (!TEST_ptr(con)) | |
144 | goto end; | |
145 | ||
146 | rbio = BIO_new(BIO_s_mem()); | |
147 | wbio = BIO_new(BIO_s_mem()); | |
148 | if (!TEST_ptr(rbio)|| !TEST_ptr(wbio)) { | |
149 | BIO_free(rbio); | |
150 | BIO_free(wbio); | |
151 | goto end; | |
152 | } | |
153 | ||
154 | SSL_set_bio(con, rbio, wbio); | |
155 | SSL_set_connect_state(con); | |
156 | ||
157 | /* set SNI after 'client side' is set */ | |
158 | SSL_set_tlsext_host_name(con, host); | |
159 | ||
160 | if (!TEST_int_le(SSL_connect(con), 0)) | |
161 | /* This shouldn't succeed because we don't have a server! */ | |
162 | goto end; | |
163 | if (!TEST_true(get_sni_from_client_hello(wbio, &hostname))) | |
164 | /* no SNI in client hello */ | |
165 | goto end; | |
166 | if (!TEST_str_eq(hostname, host)) | |
167 | /* incorrect SNI value */ | |
168 | goto end; | |
169 | ret = 1; | |
170 | end: | |
171 | OPENSSL_free(hostname); | |
172 | SSL_free(con); | |
173 | SSL_CTX_free(ctx); | |
174 | return ret; | |
175 | } | |
176 | ||
31a80694 | 177 | static int server_setup_sni(void) |
190b9a03 PY |
178 | { |
179 | SSL_CTX *ctx; | |
180 | SSL *con = NULL; | |
181 | BIO *rbio; | |
182 | BIO *wbio; | |
183 | int ret = 0; | |
184 | ||
185 | /* use TLS_server_method to choose 'server-side' */ | |
186 | ctx = SSL_CTX_new(TLS_server_method()); | |
187 | if (!TEST_ptr(ctx)) | |
188 | goto end; | |
189 | ||
190 | con = SSL_new(ctx); | |
191 | if (!TEST_ptr(con)) | |
192 | goto end; | |
193 | ||
194 | rbio = BIO_new(BIO_s_mem()); | |
195 | wbio = BIO_new(BIO_s_mem()); | |
196 | if (!TEST_ptr(rbio)|| !TEST_ptr(wbio)) { | |
197 | BIO_free(rbio); | |
198 | BIO_free(wbio); | |
199 | goto end; | |
200 | } | |
201 | ||
202 | SSL_set_bio(con, rbio, wbio); | |
203 | ||
204 | /* set SNI at server side */ | |
205 | SSL_set_tlsext_host_name(con, host); | |
206 | ||
207 | if (!TEST_int_le(SSL_accept(con), 0)) | |
208 | /* This shouldn't succeed because we have nothing to listen on */ | |
209 | goto end; | |
210 | if (!TEST_ptr_null(SSL_get_servername(con, TLSEXT_NAMETYPE_host_name))) | |
211 | /* SNI should be cleared by SSL_accpet */ | |
212 | goto end; | |
213 | ret = 1; | |
214 | end: | |
215 | SSL_free(con); | |
216 | SSL_CTX_free(ctx); | |
217 | return ret; | |
218 | } | |
219 | ||
220 | typedef int (*sni_test_fn)(void); | |
221 | ||
222 | static sni_test_fn sni_test_fns[3] = { | |
223 | client_setup_sni_before_state, | |
224 | client_setup_sni_after_state, | |
225 | server_setup_sni | |
226 | }; | |
227 | ||
228 | static int test_servername(int test) | |
229 | { | |
230 | /* | |
231 | * For each test set up an SSL_CTX and SSL and see | |
232 | * what SNI behaves. | |
233 | */ | |
234 | return sni_test_fns[test](); | |
235 | } | |
236 | ||
237 | int setup_tests(void) | |
238 | { | |
239 | ADD_ALL_TESTS(test_servername, OSSL_NELEM(sni_test_fns)); | |
240 | return 1; | |
241 | } |