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6dd083fd | 1 | /* |
3c95ef22 | 2 | * Copyright 2016-2023 The OpenSSL Project Authors. All Rights Reserved. |
6dd083fd | 3 | * |
2c18d164 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
6dd083fd MC |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8 | */ | |
9 | ||
ab83e314 | 10 | #include <openssl/ocsp.h> |
706457b7 | 11 | #include "../ssl_local.h" |
67dc995e | 12 | #include "internal/cryptlib.h" |
706457b7 | 13 | #include "statem_local.h" |
6dd083fd | 14 | |
38b051a1 | 15 | EXT_RETURN tls_construct_ctos_renegotiate(SSL_CONNECTION *s, WPACKET *pkt, |
b186a592 | 16 | unsigned int context, X509 *x, |
f63a17d6 | 17 | size_t chainidx) |
ab83e314 | 18 | { |
972ee925 TP |
19 | if (!s->renegotiate) { |
20 | /* If not renegotiating, send an empty RI extension to indicate support */ | |
ab83e314 | 21 | |
972ee925 TP |
22 | #if DTLS_MAX_VERSION_INTERNAL != DTLS1_2_VERSION |
23 | # error Internal DTLS version error | |
24 | #endif | |
25 | ||
26 | if (!SSL_CONNECTION_IS_DTLS(s) | |
27 | && (s->min_proto_version >= TLS1_3_VERSION | |
28 | || (ssl_security(s, SSL_SECOP_VERSION, 0, TLS1_VERSION, NULL) | |
29 | && s->min_proto_version <= TLS1_VERSION))) { | |
30 | /* | |
31 | * For TLS <= 1.0 SCSV is used instead, and for TLS 1.3 this | |
32 | * extension isn't used at all. | |
33 | */ | |
34 | return EXT_RETURN_NOT_SENT; | |
35 | } | |
36 | ||
37 | ||
38 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_renegotiate) | |
39 | || !WPACKET_start_sub_packet_u16(pkt) | |
40 | || !WPACKET_put_bytes_u8(pkt, 0) | |
41 | || !WPACKET_close(pkt)) { | |
42 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); | |
43 | return EXT_RETURN_FAIL; | |
44 | } | |
45 | ||
46 | return EXT_RETURN_SENT; | |
47 | } | |
48 | ||
49 | /* Add a complete RI extension if renegotiating */ | |
ab83e314 MC |
50 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_renegotiate) |
51 | || !WPACKET_start_sub_packet_u16(pkt) | |
555cbb32 TS |
52 | || !WPACKET_sub_memcpy_u8(pkt, s->s3.previous_client_finished, |
53 | s->s3.previous_client_finished_len) | |
ab83e314 | 54 | || !WPACKET_close(pkt)) { |
c48ffbcc | 55 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 56 | return EXT_RETURN_FAIL; |
ab83e314 MC |
57 | } |
58 | ||
b186a592 | 59 | return EXT_RETURN_SENT; |
ab83e314 MC |
60 | } |
61 | ||
38b051a1 | 62 | EXT_RETURN tls_construct_ctos_server_name(SSL_CONNECTION *s, WPACKET *pkt, |
b186a592 | 63 | unsigned int context, X509 *x, |
f63a17d6 | 64 | size_t chainidx) |
ab83e314 | 65 | { |
aff8c126 | 66 | if (s->ext.hostname == NULL) |
b186a592 | 67 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
68 | |
69 | /* Add TLS extension servername to the Client Hello message */ | |
70 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_server_name) | |
71 | /* Sub-packet for server_name extension */ | |
72 | || !WPACKET_start_sub_packet_u16(pkt) | |
73 | /* Sub-packet for servername list (always 1 hostname)*/ | |
74 | || !WPACKET_start_sub_packet_u16(pkt) | |
75 | || !WPACKET_put_bytes_u8(pkt, TLSEXT_NAMETYPE_host_name) | |
aff8c126 RS |
76 | || !WPACKET_sub_memcpy_u16(pkt, s->ext.hostname, |
77 | strlen(s->ext.hostname)) | |
ab83e314 MC |
78 | || !WPACKET_close(pkt) |
79 | || !WPACKET_close(pkt)) { | |
c48ffbcc | 80 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 81 | return EXT_RETURN_FAIL; |
ab83e314 MC |
82 | } |
83 | ||
b186a592 | 84 | return EXT_RETURN_SENT; |
ab83e314 MC |
85 | } |
86 | ||
cf72c757 | 87 | /* Push a Max Fragment Len extension into ClientHello */ |
38b051a1 | 88 | EXT_RETURN tls_construct_ctos_maxfragmentlen(SSL_CONNECTION *s, WPACKET *pkt, |
cf72c757 | 89 | unsigned int context, X509 *x, |
f63a17d6 | 90 | size_t chainidx) |
cf72c757 F |
91 | { |
92 | if (s->ext.max_fragment_len_mode == TLSEXT_max_fragment_length_DISABLED) | |
93 | return EXT_RETURN_NOT_SENT; | |
94 | ||
95 | /* Add Max Fragment Length extension if client enabled it. */ | |
96 | /*- | |
97 | * 4 bytes for this extension type and extension length | |
98 | * 1 byte for the Max Fragment Length code value. | |
99 | */ | |
100 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_max_fragment_length) | |
101 | /* Sub-packet for Max Fragment Length extension (1 byte) */ | |
102 | || !WPACKET_start_sub_packet_u16(pkt) | |
103 | || !WPACKET_put_bytes_u8(pkt, s->ext.max_fragment_len_mode) | |
104 | || !WPACKET_close(pkt)) { | |
c48ffbcc | 105 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
cf72c757 F |
106 | return EXT_RETURN_FAIL; |
107 | } | |
108 | ||
109 | return EXT_RETURN_SENT; | |
110 | } | |
111 | ||
ab83e314 | 112 | #ifndef OPENSSL_NO_SRP |
38b051a1 TM |
113 | EXT_RETURN tls_construct_ctos_srp(SSL_CONNECTION *s, WPACKET *pkt, |
114 | unsigned int context, | |
f63a17d6 | 115 | X509 *x, size_t chainidx) |
ab83e314 MC |
116 | { |
117 | /* Add SRP username if there is one */ | |
118 | if (s->srp_ctx.login == NULL) | |
b186a592 | 119 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
120 | |
121 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_srp) | |
122 | /* Sub-packet for SRP extension */ | |
123 | || !WPACKET_start_sub_packet_u16(pkt) | |
124 | || !WPACKET_start_sub_packet_u8(pkt) | |
125 | /* login must not be zero...internal error if so */ | |
126 | || !WPACKET_set_flags(pkt, WPACKET_FLAGS_NON_ZERO_LENGTH) | |
127 | || !WPACKET_memcpy(pkt, s->srp_ctx.login, | |
128 | strlen(s->srp_ctx.login)) | |
129 | || !WPACKET_close(pkt) | |
130 | || !WPACKET_close(pkt)) { | |
c48ffbcc | 131 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 132 | return EXT_RETURN_FAIL; |
ab83e314 MC |
133 | } |
134 | ||
b186a592 | 135 | return EXT_RETURN_SENT; |
ab83e314 MC |
136 | } |
137 | #endif | |
138 | ||
38b051a1 | 139 | static int use_ecc(SSL_CONNECTION *s, int min_version, int max_version) |
ab83e314 | 140 | { |
589b6227 | 141 | int i, end, ret = 0; |
ab83e314 MC |
142 | unsigned long alg_k, alg_a; |
143 | STACK_OF(SSL_CIPHER) *cipher_stack = NULL; | |
dbc6268f MC |
144 | const uint16_t *pgroups = NULL; |
145 | size_t num_groups, j; | |
38b051a1 | 146 | SSL *ssl = SSL_CONNECTION_GET_SSL(s); |
ab83e314 MC |
147 | |
148 | /* See if we support any ECC ciphersuites */ | |
149 | if (s->version == SSL3_VERSION) | |
150 | return 0; | |
151 | ||
38b051a1 | 152 | cipher_stack = SSL_get1_supported_ciphers(ssl); |
1266eefd MC |
153 | end = sk_SSL_CIPHER_num(cipher_stack); |
154 | for (i = 0; i < end; i++) { | |
ab83e314 MC |
155 | const SSL_CIPHER *c = sk_SSL_CIPHER_value(cipher_stack, i); |
156 | ||
157 | alg_k = c->algorithm_mkey; | |
158 | alg_a = c->algorithm_auth; | |
159 | if ((alg_k & (SSL_kECDHE | SSL_kECDHEPSK)) | |
1266eefd | 160 | || (alg_a & SSL_aECDSA) |
589b6227 MC |
161 | || c->min_tls >= TLS1_3_VERSION) { |
162 | ret = 1; | |
163 | break; | |
164 | } | |
ab83e314 | 165 | } |
589b6227 | 166 | sk_SSL_CIPHER_free(cipher_stack); |
dbc6268f MC |
167 | if (!ret) |
168 | return 0; | |
169 | ||
170 | /* Check we have at least one EC supported group */ | |
171 | tls1_get_supported_groups(s, &pgroups, &num_groups); | |
172 | for (j = 0; j < num_groups; j++) { | |
173 | uint16_t ctmp = pgroups[j]; | |
174 | ||
8b1db5d3 | 175 | if (tls_valid_group(s, ctmp, min_version, max_version, 1, NULL) |
dbc6268f MC |
176 | && tls_group_allowed(s, ctmp, SSL_SECOP_CURVE_SUPPORTED)) |
177 | return 1; | |
178 | } | |
179 | ||
180 | return 0; | |
ab83e314 MC |
181 | } |
182 | ||
38b051a1 | 183 | EXT_RETURN tls_construct_ctos_ec_pt_formats(SSL_CONNECTION *s, WPACKET *pkt, |
b186a592 | 184 | unsigned int context, X509 *x, |
f63a17d6 | 185 | size_t chainidx) |
ab83e314 MC |
186 | { |
187 | const unsigned char *pformats; | |
188 | size_t num_formats; | |
dbc6268f | 189 | int reason, min_version, max_version; |
ab83e314 | 190 | |
dbc6268f MC |
191 | reason = ssl_get_min_max_version(s, &min_version, &max_version, NULL); |
192 | if (reason != 0) { | |
c48ffbcc | 193 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, reason); |
dbc6268f MC |
194 | return EXT_RETURN_FAIL; |
195 | } | |
9d2d857f | 196 | if (!use_ecc(s, min_version, max_version)) |
b186a592 | 197 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
198 | |
199 | /* Add TLS extension ECPointFormats to the ClientHello message */ | |
ab83e314 MC |
200 | tls1_get_formatlist(s, &pformats, &num_formats); |
201 | ||
202 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_ec_point_formats) | |
203 | /* Sub-packet for formats extension */ | |
204 | || !WPACKET_start_sub_packet_u16(pkt) | |
205 | || !WPACKET_sub_memcpy_u8(pkt, pformats, num_formats) | |
206 | || !WPACKET_close(pkt)) { | |
c48ffbcc | 207 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 208 | return EXT_RETURN_FAIL; |
ab83e314 MC |
209 | } |
210 | ||
b186a592 | 211 | return EXT_RETURN_SENT; |
ab83e314 MC |
212 | } |
213 | ||
38b051a1 | 214 | EXT_RETURN tls_construct_ctos_supported_groups(SSL_CONNECTION *s, WPACKET *pkt, |
b186a592 | 215 | unsigned int context, X509 *x, |
f63a17d6 | 216 | size_t chainidx) |
ab83e314 | 217 | { |
f48d826e | 218 | const uint16_t *pgroups = NULL; |
8b1db5d3 | 219 | size_t num_groups = 0, i, tls13added = 0, added = 0; |
9aaecbfc | 220 | int min_version, max_version, reason; |
ab83e314 | 221 | |
9aaecbfc | 222 | reason = ssl_get_min_max_version(s, &min_version, &max_version, NULL); |
223 | if (reason != 0) { | |
c48ffbcc | 224 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, reason); |
9aaecbfc | 225 | return EXT_RETURN_FAIL; |
226 | } | |
227 | ||
8b1db5d3 MC |
228 | /* |
229 | * We only support EC groups in TLSv1.2 or below, and in DTLS. Therefore | |
230 | * if we don't have EC support then we don't send this extension. | |
231 | */ | |
232 | if (!use_ecc(s, min_version, max_version) | |
38b051a1 | 233 | && (SSL_CONNECTION_IS_DTLS(s) || max_version < TLS1_3_VERSION)) |
dbc6268f | 234 | return EXT_RETURN_NOT_SENT; |
dbc6268f | 235 | |
ab83e314 MC |
236 | /* |
237 | * Add TLS extension supported_groups to the ClientHello message | |
238 | */ | |
f48d826e | 239 | tls1_get_supported_groups(s, &pgroups, &num_groups); |
ab83e314 MC |
240 | |
241 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_supported_groups) | |
242 | /* Sub-packet for supported_groups extension */ | |
243 | || !WPACKET_start_sub_packet_u16(pkt) | |
9aaecbfc | 244 | || !WPACKET_start_sub_packet_u16(pkt) |
245 | || !WPACKET_set_flags(pkt, WPACKET_FLAGS_NON_ZERO_LENGTH)) { | |
c48ffbcc | 246 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 247 | return EXT_RETURN_FAIL; |
ab83e314 | 248 | } |
9aaecbfc | 249 | /* Copy group ID if supported */ |
f48d826e DSH |
250 | for (i = 0; i < num_groups; i++) { |
251 | uint16_t ctmp = pgroups[i]; | |
8b1db5d3 | 252 | int okfortls13; |
9e84a42d | 253 | |
8b1db5d3 | 254 | if (tls_valid_group(s, ctmp, min_version, max_version, 0, &okfortls13) |
dbc6268f | 255 | && tls_group_allowed(s, ctmp, SSL_SECOP_CURVE_SUPPORTED)) { |
9e84a42d | 256 | if (!WPACKET_put_bytes_u16(pkt, ctmp)) { |
c48ffbcc | 257 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
9aaecbfc | 258 | return EXT_RETURN_FAIL; |
259 | } | |
8b1db5d3 MC |
260 | if (okfortls13 && max_version == TLS1_3_VERSION) |
261 | tls13added++; | |
262 | added++; | |
ab83e314 MC |
263 | } |
264 | } | |
265 | if (!WPACKET_close(pkt) || !WPACKET_close(pkt)) { | |
9afc6c54 | 266 | if (added == 0) |
8b1db5d3 MC |
267 | SSLfatal_data(s, SSL_AD_INTERNAL_ERROR, SSL_R_NO_SUITABLE_GROUPS, |
268 | "No groups enabled for max supported SSL/TLS version"); | |
269 | else | |
270 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); | |
b186a592 | 271 | return EXT_RETURN_FAIL; |
9afc6c54 MC |
272 | } |
273 | ||
274 | if (tls13added == 0 && max_version == TLS1_3_VERSION) { | |
275 | SSLfatal_data(s, SSL_AD_INTERNAL_ERROR, SSL_R_NO_SUITABLE_GROUPS, | |
276 | "No groups enabled for max supported SSL/TLS version"); | |
277 | return EXT_RETURN_FAIL; | |
ab83e314 MC |
278 | } |
279 | ||
b186a592 | 280 | return EXT_RETURN_SENT; |
ab83e314 | 281 | } |
ab83e314 | 282 | |
38b051a1 | 283 | EXT_RETURN tls_construct_ctos_session_ticket(SSL_CONNECTION *s, WPACKET *pkt, |
b186a592 | 284 | unsigned int context, X509 *x, |
f63a17d6 | 285 | size_t chainidx) |
ab83e314 MC |
286 | { |
287 | size_t ticklen; | |
288 | ||
289 | if (!tls_use_ticket(s)) | |
b186a592 | 290 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
291 | |
292 | if (!s->new_session && s->session != NULL | |
08191294 MC |
293 | && s->session->ext.tick != NULL |
294 | && s->session->ssl_version != TLS1_3_VERSION) { | |
aff8c126 RS |
295 | ticklen = s->session->ext.ticklen; |
296 | } else if (s->session && s->ext.session_ticket != NULL | |
297 | && s->ext.session_ticket->data != NULL) { | |
298 | ticklen = s->ext.session_ticket->length; | |
299 | s->session->ext.tick = OPENSSL_malloc(ticklen); | |
300 | if (s->session->ext.tick == NULL) { | |
c48ffbcc | 301 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 302 | return EXT_RETURN_FAIL; |
ab83e314 | 303 | } |
aff8c126 RS |
304 | memcpy(s->session->ext.tick, |
305 | s->ext.session_ticket->data, ticklen); | |
306 | s->session->ext.ticklen = ticklen; | |
ab83e314 MC |
307 | } else { |
308 | ticklen = 0; | |
309 | } | |
310 | ||
aff8c126 RS |
311 | if (ticklen == 0 && s->ext.session_ticket != NULL && |
312 | s->ext.session_ticket->data == NULL) | |
b186a592 | 313 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
314 | |
315 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_session_ticket) | |
aff8c126 | 316 | || !WPACKET_sub_memcpy_u16(pkt, s->session->ext.tick, ticklen)) { |
c48ffbcc | 317 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 318 | return EXT_RETURN_FAIL; |
ab83e314 MC |
319 | } |
320 | ||
b186a592 | 321 | return EXT_RETURN_SENT; |
ab83e314 MC |
322 | } |
323 | ||
38b051a1 | 324 | EXT_RETURN tls_construct_ctos_sig_algs(SSL_CONNECTION *s, WPACKET *pkt, |
b186a592 | 325 | unsigned int context, X509 *x, |
f63a17d6 | 326 | size_t chainidx) |
ab83e314 MC |
327 | { |
328 | size_t salglen; | |
98c792d1 | 329 | const uint16_t *salg; |
ab83e314 MC |
330 | |
331 | if (!SSL_CLIENT_USE_SIGALGS(s)) | |
b186a592 | 332 | return EXT_RETURN_NOT_SENT; |
ab83e314 | 333 | |
a9669ddc | 334 | salglen = tls12_get_psigalgs(s, 1, &salg); |
ab83e314 MC |
335 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_signature_algorithms) |
336 | /* Sub-packet for sig-algs extension */ | |
337 | || !WPACKET_start_sub_packet_u16(pkt) | |
338 | /* Sub-packet for the actual list */ | |
339 | || !WPACKET_start_sub_packet_u16(pkt) | |
340 | || !tls12_copy_sigalgs(s, pkt, salg, salglen) | |
341 | || !WPACKET_close(pkt) | |
342 | || !WPACKET_close(pkt)) { | |
c48ffbcc | 343 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 344 | return EXT_RETURN_FAIL; |
ab83e314 MC |
345 | } |
346 | ||
b186a592 | 347 | return EXT_RETURN_SENT; |
ab83e314 MC |
348 | } |
349 | ||
350 | #ifndef OPENSSL_NO_OCSP | |
38b051a1 | 351 | EXT_RETURN tls_construct_ctos_status_request(SSL_CONNECTION *s, WPACKET *pkt, |
b186a592 | 352 | unsigned int context, X509 *x, |
f63a17d6 | 353 | size_t chainidx) |
ab83e314 MC |
354 | { |
355 | int i; | |
356 | ||
e96e0f8e MC |
357 | /* This extension isn't defined for client Certificates */ |
358 | if (x != NULL) | |
b186a592 | 359 | return EXT_RETURN_NOT_SENT; |
e96e0f8e | 360 | |
aff8c126 | 361 | if (s->ext.status_type != TLSEXT_STATUSTYPE_ocsp) |
b186a592 | 362 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
363 | |
364 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_status_request) | |
365 | /* Sub-packet for status request extension */ | |
366 | || !WPACKET_start_sub_packet_u16(pkt) | |
367 | || !WPACKET_put_bytes_u8(pkt, TLSEXT_STATUSTYPE_ocsp) | |
368 | /* Sub-packet for the ids */ | |
369 | || !WPACKET_start_sub_packet_u16(pkt)) { | |
c48ffbcc | 370 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 371 | return EXT_RETURN_FAIL; |
ab83e314 | 372 | } |
aff8c126 | 373 | for (i = 0; i < sk_OCSP_RESPID_num(s->ext.ocsp.ids); i++) { |
ab83e314 | 374 | unsigned char *idbytes; |
aff8c126 | 375 | OCSP_RESPID *id = sk_OCSP_RESPID_value(s->ext.ocsp.ids, i); |
1266eefd | 376 | int idlen = i2d_OCSP_RESPID(id, NULL); |
ab83e314 | 377 | |
ab83e314 MC |
378 | if (idlen <= 0 |
379 | /* Sub-packet for an individual id */ | |
380 | || !WPACKET_sub_allocate_bytes_u16(pkt, idlen, &idbytes) | |
381 | || i2d_OCSP_RESPID(id, &idbytes) != idlen) { | |
c48ffbcc | 382 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 383 | return EXT_RETURN_FAIL; |
ab83e314 MC |
384 | } |
385 | } | |
386 | if (!WPACKET_close(pkt) | |
387 | || !WPACKET_start_sub_packet_u16(pkt)) { | |
c48ffbcc | 388 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 389 | return EXT_RETURN_FAIL; |
ab83e314 | 390 | } |
aff8c126 | 391 | if (s->ext.ocsp.exts) { |
ab83e314 | 392 | unsigned char *extbytes; |
aff8c126 | 393 | int extlen = i2d_X509_EXTENSIONS(s->ext.ocsp.exts, NULL); |
ab83e314 MC |
394 | |
395 | if (extlen < 0) { | |
c48ffbcc | 396 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 397 | return EXT_RETURN_FAIL; |
ab83e314 MC |
398 | } |
399 | if (!WPACKET_allocate_bytes(pkt, extlen, &extbytes) | |
aff8c126 | 400 | || i2d_X509_EXTENSIONS(s->ext.ocsp.exts, &extbytes) |
ab83e314 | 401 | != extlen) { |
c48ffbcc | 402 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 403 | return EXT_RETURN_FAIL; |
ab83e314 MC |
404 | } |
405 | } | |
406 | if (!WPACKET_close(pkt) || !WPACKET_close(pkt)) { | |
c48ffbcc | 407 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 408 | return EXT_RETURN_FAIL; |
ab83e314 MC |
409 | } |
410 | ||
b186a592 | 411 | return EXT_RETURN_SENT; |
ab83e314 MC |
412 | } |
413 | #endif | |
414 | ||
415 | #ifndef OPENSSL_NO_NEXTPROTONEG | |
38b051a1 TM |
416 | EXT_RETURN tls_construct_ctos_npn(SSL_CONNECTION *s, WPACKET *pkt, |
417 | unsigned int context, | |
f63a17d6 | 418 | X509 *x, size_t chainidx) |
ab83e314 | 419 | { |
38b051a1 TM |
420 | if (SSL_CONNECTION_GET_CTX(s)->ext.npn_select_cb == NULL |
421 | || !SSL_IS_FIRST_HANDSHAKE(s)) | |
b186a592 | 422 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
423 | |
424 | /* | |
425 | * The client advertises an empty extension to indicate its support | |
426 | * for Next Protocol Negotiation | |
427 | */ | |
428 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_next_proto_neg) | |
429 | || !WPACKET_put_bytes_u16(pkt, 0)) { | |
c48ffbcc | 430 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 431 | return EXT_RETURN_FAIL; |
ab83e314 MC |
432 | } |
433 | ||
b186a592 | 434 | return EXT_RETURN_SENT; |
ab83e314 MC |
435 | } |
436 | #endif | |
437 | ||
38b051a1 TM |
438 | EXT_RETURN tls_construct_ctos_alpn(SSL_CONNECTION *s, WPACKET *pkt, |
439 | unsigned int context, | |
f63a17d6 | 440 | X509 *x, size_t chainidx) |
ab83e314 | 441 | { |
555cbb32 | 442 | s->s3.alpn_sent = 0; |
ab83e314 | 443 | |
c7f47786 | 444 | if (s->ext.alpn == NULL || !SSL_IS_FIRST_HANDSHAKE(s)) |
b186a592 | 445 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
446 | |
447 | if (!WPACKET_put_bytes_u16(pkt, | |
448 | TLSEXT_TYPE_application_layer_protocol_negotiation) | |
449 | /* Sub-packet ALPN extension */ | |
450 | || !WPACKET_start_sub_packet_u16(pkt) | |
aff8c126 | 451 | || !WPACKET_sub_memcpy_u16(pkt, s->ext.alpn, s->ext.alpn_len) |
ab83e314 | 452 | || !WPACKET_close(pkt)) { |
c48ffbcc | 453 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 454 | return EXT_RETURN_FAIL; |
ab83e314 | 455 | } |
555cbb32 | 456 | s->s3.alpn_sent = 1; |
ab83e314 | 457 | |
b186a592 | 458 | return EXT_RETURN_SENT; |
ab83e314 MC |
459 | } |
460 | ||
461 | ||
462 | #ifndef OPENSSL_NO_SRTP | |
38b051a1 | 463 | EXT_RETURN tls_construct_ctos_use_srtp(SSL_CONNECTION *s, WPACKET *pkt, |
b186a592 | 464 | unsigned int context, X509 *x, |
f63a17d6 | 465 | size_t chainidx) |
ab83e314 | 466 | { |
38b051a1 TM |
467 | SSL *ssl = SSL_CONNECTION_GET_SSL(s); |
468 | STACK_OF(SRTP_PROTECTION_PROFILE) *clnt = SSL_get_srtp_profiles(ssl); | |
1266eefd | 469 | int i, end; |
ab83e314 MC |
470 | |
471 | if (clnt == NULL) | |
b186a592 | 472 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
473 | |
474 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_use_srtp) | |
475 | /* Sub-packet for SRTP extension */ | |
476 | || !WPACKET_start_sub_packet_u16(pkt) | |
477 | /* Sub-packet for the protection profile list */ | |
478 | || !WPACKET_start_sub_packet_u16(pkt)) { | |
c48ffbcc | 479 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 480 | return EXT_RETURN_FAIL; |
ab83e314 | 481 | } |
1266eefd MC |
482 | |
483 | end = sk_SRTP_PROTECTION_PROFILE_num(clnt); | |
484 | for (i = 0; i < end; i++) { | |
485 | const SRTP_PROTECTION_PROFILE *prof = | |
486 | sk_SRTP_PROTECTION_PROFILE_value(clnt, i); | |
487 | ||
ab83e314 | 488 | if (prof == NULL || !WPACKET_put_bytes_u16(pkt, prof->id)) { |
c48ffbcc | 489 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 490 | return EXT_RETURN_FAIL; |
ab83e314 MC |
491 | } |
492 | } | |
493 | if (!WPACKET_close(pkt) | |
494 | /* Add an empty use_mki value */ | |
495 | || !WPACKET_put_bytes_u8(pkt, 0) | |
496 | || !WPACKET_close(pkt)) { | |
c48ffbcc | 497 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 498 | return EXT_RETURN_FAIL; |
ab83e314 MC |
499 | } |
500 | ||
b186a592 | 501 | return EXT_RETURN_SENT; |
ab83e314 MC |
502 | } |
503 | #endif | |
504 | ||
38b051a1 TM |
505 | EXT_RETURN tls_construct_ctos_etm(SSL_CONNECTION *s, WPACKET *pkt, |
506 | unsigned int context, | |
f63a17d6 | 507 | X509 *x, size_t chainidx) |
ab83e314 MC |
508 | { |
509 | if (s->options & SSL_OP_NO_ENCRYPT_THEN_MAC) | |
b186a592 | 510 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
511 | |
512 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_encrypt_then_mac) | |
513 | || !WPACKET_put_bytes_u16(pkt, 0)) { | |
c48ffbcc | 514 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 515 | return EXT_RETURN_FAIL; |
ab83e314 MC |
516 | } |
517 | ||
b186a592 | 518 | return EXT_RETURN_SENT; |
ab83e314 MC |
519 | } |
520 | ||
521 | #ifndef OPENSSL_NO_CT | |
38b051a1 TM |
522 | EXT_RETURN tls_construct_ctos_sct(SSL_CONNECTION *s, WPACKET *pkt, |
523 | unsigned int context, | |
f63a17d6 | 524 | X509 *x, size_t chainidx) |
ab83e314 MC |
525 | { |
526 | if (s->ct_validation_callback == NULL) | |
b186a592 | 527 | return EXT_RETURN_NOT_SENT; |
ab83e314 | 528 | |
e96e0f8e MC |
529 | /* Not defined for client Certificates */ |
530 | if (x != NULL) | |
b186a592 | 531 | return EXT_RETURN_NOT_SENT; |
e96e0f8e | 532 | |
ab83e314 MC |
533 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_signed_certificate_timestamp) |
534 | || !WPACKET_put_bytes_u16(pkt, 0)) { | |
c48ffbcc | 535 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 536 | return EXT_RETURN_FAIL; |
ab83e314 MC |
537 | } |
538 | ||
b186a592 | 539 | return EXT_RETURN_SENT; |
ab83e314 MC |
540 | } |
541 | #endif | |
542 | ||
38b051a1 TM |
543 | EXT_RETURN tls_construct_ctos_ems(SSL_CONNECTION *s, WPACKET *pkt, |
544 | unsigned int context, | |
f63a17d6 | 545 | X509 *x, size_t chainidx) |
ab83e314 | 546 | { |
088dfa13 TS |
547 | if (s->options & SSL_OP_NO_EXTENDED_MASTER_SECRET) |
548 | return EXT_RETURN_NOT_SENT; | |
549 | ||
ab83e314 MC |
550 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_extended_master_secret) |
551 | || !WPACKET_put_bytes_u16(pkt, 0)) { | |
c48ffbcc | 552 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 553 | return EXT_RETURN_FAIL; |
ab83e314 MC |
554 | } |
555 | ||
b186a592 | 556 | return EXT_RETURN_SENT; |
ab83e314 MC |
557 | } |
558 | ||
38b051a1 | 559 | EXT_RETURN tls_construct_ctos_supported_versions(SSL_CONNECTION *s, WPACKET *pkt, |
b186a592 | 560 | unsigned int context, X509 *x, |
f63a17d6 | 561 | size_t chainidx) |
ab83e314 MC |
562 | { |
563 | int currv, min_version, max_version, reason; | |
564 | ||
b5b993b2 | 565 | reason = ssl_get_min_max_version(s, &min_version, &max_version, NULL); |
88050dd1 | 566 | if (reason != 0) { |
c48ffbcc | 567 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, reason); |
88050dd1 MC |
568 | return EXT_RETURN_FAIL; |
569 | } | |
570 | ||
571 | /* | |
572 | * Don't include this if we can't negotiate TLSv1.3. We can do a straight | |
573 | * comparison here because we will never be called in DTLS. | |
574 | */ | |
575 | if (max_version < TLS1_3_VERSION) | |
576 | return EXT_RETURN_NOT_SENT; | |
577 | ||
ab83e314 MC |
578 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_supported_versions) |
579 | || !WPACKET_start_sub_packet_u16(pkt) | |
580 | || !WPACKET_start_sub_packet_u8(pkt)) { | |
c48ffbcc | 581 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 582 | return EXT_RETURN_FAIL; |
ab83e314 MC |
583 | } |
584 | ||
ab83e314 | 585 | for (currv = max_version; currv >= min_version; currv--) { |
35e742ec | 586 | if (!WPACKET_put_bytes_u16(pkt, currv)) { |
c48ffbcc | 587 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 588 | return EXT_RETURN_FAIL; |
ab83e314 MC |
589 | } |
590 | } | |
591 | if (!WPACKET_close(pkt) || !WPACKET_close(pkt)) { | |
c48ffbcc | 592 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 593 | return EXT_RETURN_FAIL; |
ab83e314 MC |
594 | } |
595 | ||
b186a592 | 596 | return EXT_RETURN_SENT; |
ab83e314 MC |
597 | } |
598 | ||
b2f7e8c0 | 599 | /* |
e3c0d76b | 600 | * Construct a psk_kex_modes extension. |
b2f7e8c0 | 601 | */ |
38b051a1 | 602 | EXT_RETURN tls_construct_ctos_psk_kex_modes(SSL_CONNECTION *s, WPACKET *pkt, |
b186a592 | 603 | unsigned int context, X509 *x, |
f63a17d6 | 604 | size_t chainidx) |
b2f7e8c0 MC |
605 | { |
606 | #ifndef OPENSSL_NO_TLS1_3 | |
e3c0d76b MC |
607 | int nodhe = s->options & SSL_OP_ALLOW_NO_DHE_KEX; |
608 | ||
b2f7e8c0 MC |
609 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_psk_kex_modes) |
610 | || !WPACKET_start_sub_packet_u16(pkt) | |
611 | || !WPACKET_start_sub_packet_u8(pkt) | |
612 | || !WPACKET_put_bytes_u8(pkt, TLSEXT_KEX_MODE_KE_DHE) | |
e3c0d76b | 613 | || (nodhe && !WPACKET_put_bytes_u8(pkt, TLSEXT_KEX_MODE_KE)) |
b2f7e8c0 MC |
614 | || !WPACKET_close(pkt) |
615 | || !WPACKET_close(pkt)) { | |
c48ffbcc | 616 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 617 | return EXT_RETURN_FAIL; |
b2f7e8c0 | 618 | } |
b3ad72ce | 619 | |
e3c0d76b MC |
620 | s->ext.psk_kex_mode = TLSEXT_KEX_MODE_FLAG_KE_DHE; |
621 | if (nodhe) | |
622 | s->ext.psk_kex_mode |= TLSEXT_KEX_MODE_FLAG_KE; | |
b2f7e8c0 MC |
623 | #endif |
624 | ||
b186a592 | 625 | return EXT_RETURN_SENT; |
b2f7e8c0 MC |
626 | } |
627 | ||
3847d426 | 628 | #ifndef OPENSSL_NO_TLS1_3 |
38b051a1 | 629 | static int add_key_share(SSL_CONNECTION *s, WPACKET *pkt, unsigned int curve_id) |
3847d426 | 630 | { |
7b1ec1cf MC |
631 | unsigned char *encoded_point = NULL; |
632 | EVP_PKEY *key_share_key = NULL; | |
3847d426 MC |
633 | size_t encodedlen; |
634 | ||
555cbb32 | 635 | if (s->s3.tmp.pkey != NULL) { |
fc7129dc | 636 | if (!ossl_assert(s->hello_retry_request == SSL_HRR_PENDING)) { |
c48ffbcc | 637 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
d8028b20 | 638 | return 0; |
7b1ec1cf MC |
639 | } |
640 | /* | |
641 | * Could happen if we got an HRR that wasn't requesting a new key_share | |
642 | */ | |
555cbb32 | 643 | key_share_key = s->s3.tmp.pkey; |
7b1ec1cf | 644 | } else { |
f63a17d6 | 645 | key_share_key = ssl_generate_pkey_group(s, curve_id); |
7b1ec1cf | 646 | if (key_share_key == NULL) { |
f63a17d6 | 647 | /* SSLfatal() already called */ |
d8028b20 | 648 | return 0; |
7b1ec1cf | 649 | } |
3847d426 MC |
650 | } |
651 | ||
652 | /* Encode the public key. */ | |
5ac8fb58 MC |
653 | encodedlen = EVP_PKEY_get1_encoded_public_key(key_share_key, |
654 | &encoded_point); | |
3847d426 | 655 | if (encodedlen == 0) { |
c48ffbcc | 656 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_EC_LIB); |
7b1ec1cf | 657 | goto err; |
3847d426 MC |
658 | } |
659 | ||
660 | /* Create KeyShareEntry */ | |
16f0e91c | 661 | if (!WPACKET_put_bytes_u16(pkt, curve_id) |
2248dbeb | 662 | || !WPACKET_sub_memcpy_u16(pkt, encoded_point, encodedlen)) { |
c48ffbcc | 663 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
7b1ec1cf | 664 | goto err; |
3847d426 MC |
665 | } |
666 | ||
667 | /* | |
407820c0 | 668 | * When changing to send more than one key_share we're |
3847d426 MC |
669 | * going to need to be able to save more than one EVP_PKEY. For now |
670 | * we reuse the existing tmp.pkey | |
671 | */ | |
555cbb32 TS |
672 | s->s3.tmp.pkey = key_share_key; |
673 | s->s3.group_id = curve_id; | |
2248dbeb | 674 | OPENSSL_free(encoded_point); |
3847d426 | 675 | |
d8028b20 | 676 | return 1; |
7b1ec1cf | 677 | err: |
555cbb32 | 678 | if (s->s3.tmp.pkey == NULL) |
7b1ec1cf MC |
679 | EVP_PKEY_free(key_share_key); |
680 | OPENSSL_free(encoded_point); | |
d8028b20 | 681 | return 0; |
3847d426 MC |
682 | } |
683 | #endif | |
684 | ||
38b051a1 | 685 | EXT_RETURN tls_construct_ctos_key_share(SSL_CONNECTION *s, WPACKET *pkt, |
b186a592 | 686 | unsigned int context, X509 *x, |
f63a17d6 | 687 | size_t chainidx) |
ab83e314 | 688 | { |
3cf96e88 | 689 | #ifndef OPENSSL_NO_TLS1_3 |
f48d826e DSH |
690 | size_t i, num_groups = 0; |
691 | const uint16_t *pgroups = NULL; | |
9e84a42d | 692 | uint16_t curve_id = 0; |
ab83e314 MC |
693 | |
694 | /* key_share extension */ | |
695 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_key_share) | |
696 | /* Extension data sub-packet */ | |
697 | || !WPACKET_start_sub_packet_u16(pkt) | |
698 | /* KeyShare list sub-packet */ | |
699 | || !WPACKET_start_sub_packet_u16(pkt)) { | |
c48ffbcc | 700 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 701 | return EXT_RETURN_FAIL; |
ab83e314 MC |
702 | } |
703 | ||
f48d826e | 704 | tls1_get_supported_groups(s, &pgroups, &num_groups); |
ab83e314 MC |
705 | |
706 | /* | |
407820c0 P |
707 | * Make the number of key_shares sent configurable. For |
708 | * now, we just send one | |
ab83e314 | 709 | */ |
555cbb32 TS |
710 | if (s->s3.group_id != 0) { |
711 | curve_id = s->s3.group_id; | |
3847d426 | 712 | } else { |
f48d826e | 713 | for (i = 0; i < num_groups; i++) { |
dbc6268f | 714 | if (!tls_group_allowed(s, pgroups[i], SSL_SECOP_CURVE_SUPPORTED)) |
3847d426 | 715 | continue; |
ab83e314 | 716 | |
247b8e52 MC |
717 | if (!tls_valid_group(s, pgroups[i], TLS1_3_VERSION, TLS1_3_VERSION, |
718 | 0, NULL)) | |
719 | continue; | |
720 | ||
f48d826e | 721 | curve_id = pgroups[i]; |
3847d426 | 722 | break; |
ab83e314 | 723 | } |
3847d426 | 724 | } |
ab83e314 | 725 | |
3847d426 | 726 | if (curve_id == 0) { |
c48ffbcc | 727 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_NO_SUITABLE_KEY_SHARE); |
b186a592 | 728 | return EXT_RETURN_FAIL; |
ab83e314 MC |
729 | } |
730 | ||
f63a17d6 MC |
731 | if (!add_key_share(s, pkt, curve_id)) { |
732 | /* SSLfatal() already called */ | |
b186a592 | 733 | return EXT_RETURN_FAIL; |
f63a17d6 | 734 | } |
3847d426 | 735 | |
ab83e314 | 736 | if (!WPACKET_close(pkt) || !WPACKET_close(pkt)) { |
c48ffbcc | 737 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 738 | return EXT_RETURN_FAIL; |
ab83e314 | 739 | } |
b186a592 | 740 | return EXT_RETURN_SENT; |
aa2ed504 TS |
741 | #else |
742 | return EXT_RETURN_NOT_SENT; | |
743 | #endif | |
ab83e314 MC |
744 | } |
745 | ||
38b051a1 TM |
746 | EXT_RETURN tls_construct_ctos_cookie(SSL_CONNECTION *s, WPACKET *pkt, |
747 | unsigned int context, | |
f63a17d6 | 748 | X509 *x, size_t chainidx) |
cfef5027 | 749 | { |
b186a592 | 750 | EXT_RETURN ret = EXT_RETURN_FAIL; |
cfef5027 MC |
751 | |
752 | /* Should only be set if we've had an HRR */ | |
753 | if (s->ext.tls13_cookie_len == 0) | |
b186a592 | 754 | return EXT_RETURN_NOT_SENT; |
cfef5027 MC |
755 | |
756 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_cookie) | |
757 | /* Extension data sub-packet */ | |
758 | || !WPACKET_start_sub_packet_u16(pkt) | |
759 | || !WPACKET_sub_memcpy_u16(pkt, s->ext.tls13_cookie, | |
760 | s->ext.tls13_cookie_len) | |
761 | || !WPACKET_close(pkt)) { | |
c48ffbcc | 762 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
cfef5027 MC |
763 | goto end; |
764 | } | |
765 | ||
b186a592 | 766 | ret = EXT_RETURN_SENT; |
cfef5027 MC |
767 | end: |
768 | OPENSSL_free(s->ext.tls13_cookie); | |
febb0afa | 769 | s->ext.tls13_cookie = NULL; |
cfef5027 MC |
770 | s->ext.tls13_cookie_len = 0; |
771 | ||
772 | return ret; | |
773 | } | |
774 | ||
38b051a1 | 775 | EXT_RETURN tls_construct_ctos_early_data(SSL_CONNECTION *s, WPACKET *pkt, |
b186a592 | 776 | unsigned int context, X509 *x, |
f63a17d6 | 777 | size_t chainidx) |
38df5a45 | 778 | { |
696de86f PW |
779 | #ifndef OPENSSL_NO_PSK |
780 | char identity[PSK_MAX_IDENTITY_LEN + 1]; | |
781 | #endif /* OPENSSL_NO_PSK */ | |
ccb76685 | 782 | const unsigned char *id = NULL; |
fff202e5 | 783 | size_t idlen = 0; |
add8d0e9 | 784 | SSL_SESSION *psksess = NULL; |
ffc5bbaa | 785 | SSL_SESSION *edsess = NULL; |
add8d0e9 | 786 | const EVP_MD *handmd = NULL; |
38b051a1 | 787 | SSL *ssl = SSL_CONNECTION_GET_SSL(s); |
add8d0e9 | 788 | |
fc7129dc | 789 | if (s->hello_retry_request == SSL_HRR_PENDING) |
add8d0e9 MC |
790 | handmd = ssl_handshake_md(s); |
791 | ||
792 | if (s->psk_use_session_cb != NULL | |
38b051a1 | 793 | && (!s->psk_use_session_cb(ssl, handmd, &id, &idlen, &psksess) |
ffc5bbaa MC |
794 | || (psksess != NULL |
795 | && psksess->ssl_version != TLS1_3_VERSION))) { | |
796 | SSL_SESSION_free(psksess); | |
c48ffbcc | 797 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_BAD_PSK); |
add8d0e9 MC |
798 | return EXT_RETURN_FAIL; |
799 | } | |
800 | ||
c2b290c3 | 801 | #ifndef OPENSSL_NO_PSK |
f3d40db1 MC |
802 | if (psksess == NULL && s->psk_client_callback != NULL) { |
803 | unsigned char psk[PSK_MAX_PSK_LEN]; | |
804 | size_t psklen = 0; | |
805 | ||
806 | memset(identity, 0, sizeof(identity)); | |
38b051a1 TM |
807 | psklen = s->psk_client_callback(ssl, NULL, |
808 | identity, sizeof(identity) - 1, | |
f3d40db1 MC |
809 | psk, sizeof(psk)); |
810 | ||
811 | if (psklen > PSK_MAX_PSK_LEN) { | |
c48ffbcc | 812 | SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, ERR_R_INTERNAL_ERROR); |
f3d40db1 MC |
813 | return EXT_RETURN_FAIL; |
814 | } else if (psklen > 0) { | |
815 | const unsigned char tls13_aes128gcmsha256_id[] = { 0x13, 0x01 }; | |
816 | const SSL_CIPHER *cipher; | |
817 | ||
818 | idlen = strlen(identity); | |
819 | if (idlen > PSK_MAX_IDENTITY_LEN) { | |
c48ffbcc | 820 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
f3d40db1 MC |
821 | return EXT_RETURN_FAIL; |
822 | } | |
823 | id = (unsigned char *)identity; | |
824 | ||
825 | /* | |
826 | * We found a PSK using an old style callback. We don't know | |
827 | * the digest so we default to SHA256 as per the TLSv1.3 spec | |
828 | */ | |
38b051a1 | 829 | cipher = SSL_CIPHER_find(ssl, tls13_aes128gcmsha256_id); |
f3d40db1 | 830 | if (cipher == NULL) { |
c48ffbcc | 831 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
f3d40db1 MC |
832 | return EXT_RETURN_FAIL; |
833 | } | |
834 | ||
835 | psksess = SSL_SESSION_new(); | |
836 | if (psksess == NULL | |
837 | || !SSL_SESSION_set1_master_key(psksess, psk, psklen) | |
838 | || !SSL_SESSION_set_cipher(psksess, cipher) | |
839 | || !SSL_SESSION_set_protocol_version(psksess, TLS1_3_VERSION)) { | |
c48ffbcc | 840 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
f3d40db1 MC |
841 | OPENSSL_cleanse(psk, psklen); |
842 | return EXT_RETURN_FAIL; | |
843 | } | |
844 | OPENSSL_cleanse(psk, psklen); | |
845 | } | |
846 | } | |
c2b290c3 | 847 | #endif /* OPENSSL_NO_PSK */ |
f3d40db1 | 848 | |
add8d0e9 MC |
849 | SSL_SESSION_free(s->psksession); |
850 | s->psksession = psksess; | |
851 | if (psksess != NULL) { | |
852 | OPENSSL_free(s->psksession_id); | |
853 | s->psksession_id = OPENSSL_memdup(id, idlen); | |
854 | if (s->psksession_id == NULL) { | |
39a14059 | 855 | s->psksession_id_len = 0; |
c48ffbcc | 856 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
add8d0e9 MC |
857 | return EXT_RETURN_FAIL; |
858 | } | |
859 | s->psksession_id_len = idlen; | |
860 | } | |
861 | ||
38df5a45 | 862 | if (s->early_data_state != SSL_EARLY_DATA_CONNECTING |
add8d0e9 MC |
863 | || (s->session->ext.max_early_data == 0 |
864 | && (psksess == NULL || psksess->ext.max_early_data == 0))) { | |
38df5a45 | 865 | s->max_early_data = 0; |
b186a592 | 866 | return EXT_RETURN_NOT_SENT; |
38df5a45 | 867 | } |
ffc5bbaa MC |
868 | edsess = s->session->ext.max_early_data != 0 ? s->session : psksess; |
869 | s->max_early_data = edsess->ext.max_early_data; | |
870 | ||
bfab12bb MC |
871 | if (edsess->ext.hostname != NULL) { |
872 | if (s->ext.hostname == NULL | |
873 | || (s->ext.hostname != NULL | |
874 | && strcmp(s->ext.hostname, edsess->ext.hostname) != 0)) { | |
f63a17d6 | 875 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
f63a17d6 | 876 | SSL_R_INCONSISTENT_EARLY_DATA_SNI); |
bfab12bb MC |
877 | return EXT_RETURN_FAIL; |
878 | } | |
ffc5bbaa MC |
879 | } |
880 | ||
881 | if ((s->ext.alpn == NULL && edsess->ext.alpn_selected != NULL)) { | |
c48ffbcc | 882 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_INCONSISTENT_EARLY_DATA_ALPN); |
ffc5bbaa MC |
883 | return EXT_RETURN_FAIL; |
884 | } | |
885 | ||
886 | /* | |
887 | * Verify that we are offering an ALPN protocol consistent with the early | |
888 | * data. | |
889 | */ | |
890 | if (edsess->ext.alpn_selected != NULL) { | |
891 | PACKET prots, alpnpkt; | |
892 | int found = 0; | |
893 | ||
894 | if (!PACKET_buf_init(&prots, s->ext.alpn, s->ext.alpn_len)) { | |
c48ffbcc | 895 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
ffc5bbaa MC |
896 | return EXT_RETURN_FAIL; |
897 | } | |
898 | while (PACKET_get_length_prefixed_1(&prots, &alpnpkt)) { | |
899 | if (PACKET_equal(&alpnpkt, edsess->ext.alpn_selected, | |
900 | edsess->ext.alpn_selected_len)) { | |
901 | found = 1; | |
902 | break; | |
903 | } | |
904 | } | |
905 | if (!found) { | |
f63a17d6 | 906 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
f63a17d6 | 907 | SSL_R_INCONSISTENT_EARLY_DATA_ALPN); |
ffc5bbaa MC |
908 | return EXT_RETURN_FAIL; |
909 | } | |
910 | } | |
38df5a45 MC |
911 | |
912 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_early_data) | |
913 | || !WPACKET_start_sub_packet_u16(pkt) | |
914 | || !WPACKET_close(pkt)) { | |
c48ffbcc | 915 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 916 | return EXT_RETURN_FAIL; |
38df5a45 MC |
917 | } |
918 | ||
919 | /* | |
920 | * We set this to rejected here. Later, if the server acknowledges the | |
921 | * extension, we set it to accepted. | |
922 | */ | |
923 | s->ext.early_data = SSL_EARLY_DATA_REJECTED; | |
4be3a7c7 | 924 | s->ext.early_data_ok = 1; |
38df5a45 | 925 | |
b186a592 | 926 | return EXT_RETURN_SENT; |
38df5a45 MC |
927 | } |
928 | ||
1266eefd MC |
929 | #define F5_WORKAROUND_MIN_MSG_LEN 0xff |
930 | #define F5_WORKAROUND_MAX_MSG_LEN 0x200 | |
931 | ||
d702ad12 MC |
932 | /* |
933 | * PSK pre binder overhead = | |
934 | * 2 bytes for TLSEXT_TYPE_psk | |
935 | * 2 bytes for extension length | |
936 | * 2 bytes for identities list length | |
937 | * 2 bytes for identity length | |
938 | * 4 bytes for obfuscated_ticket_age | |
939 | * 2 bytes for binder list length | |
940 | * 1 byte for binder length | |
941 | * The above excludes the number of bytes for the identity itself and the | |
942 | * subsequent binder bytes | |
943 | */ | |
944 | #define PSK_PRE_BINDER_OVERHEAD (2 + 2 + 2 + 2 + 4 + 2 + 1) | |
945 | ||
38b051a1 | 946 | EXT_RETURN tls_construct_ctos_padding(SSL_CONNECTION *s, WPACKET *pkt, |
b186a592 | 947 | unsigned int context, X509 *x, |
f63a17d6 | 948 | size_t chainidx) |
ab83e314 MC |
949 | { |
950 | unsigned char *padbytes; | |
951 | size_t hlen; | |
952 | ||
953 | if ((s->options & SSL_OP_TLSEXT_PADDING) == 0) | |
b186a592 | 954 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
955 | |
956 | /* | |
d702ad12 MC |
957 | * Add padding to workaround bugs in F5 terminators. See RFC7685. |
958 | * This code calculates the length of all extensions added so far but | |
959 | * excludes the PSK extension (because that MUST be written last). Therefore | |
960 | * this extension MUST always appear second to last. | |
ab83e314 MC |
961 | */ |
962 | if (!WPACKET_get_total_written(pkt, &hlen)) { | |
c48ffbcc | 963 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b186a592 | 964 | return EXT_RETURN_FAIL; |
ab83e314 MC |
965 | } |
966 | ||
d702ad12 MC |
967 | /* |
968 | * If we're going to send a PSK then that will be written out after this | |
969 | * extension, so we need to calculate how long it is going to be. | |
970 | */ | |
971 | if (s->session->ssl_version == TLS1_3_VERSION | |
972 | && s->session->ext.ticklen != 0 | |
973 | && s->session->cipher != NULL) { | |
38b051a1 TM |
974 | const EVP_MD *md = ssl_md(SSL_CONNECTION_GET_CTX(s), |
975 | s->session->cipher->algorithm2); | |
d702ad12 MC |
976 | |
977 | if (md != NULL) { | |
978 | /* | |
979 | * Add the fixed PSK overhead, the identity length and the binder | |
980 | * length. | |
981 | */ | |
982 | hlen += PSK_PRE_BINDER_OVERHEAD + s->session->ext.ticklen | |
ed576acd | 983 | + EVP_MD_get_size(md); |
d702ad12 MC |
984 | } |
985 | } | |
986 | ||
1266eefd | 987 | if (hlen > F5_WORKAROUND_MIN_MSG_LEN && hlen < F5_WORKAROUND_MAX_MSG_LEN) { |
1ee4b98e | 988 | /* Calculate the amount of padding we need to add */ |
1266eefd MC |
989 | hlen = F5_WORKAROUND_MAX_MSG_LEN - hlen; |
990 | ||
991 | /* | |
992 | * Take off the size of extension header itself (2 bytes for type and | |
10ed1b72 TS |
993 | * 2 bytes for length bytes), but ensure that the extension is at least |
994 | * 1 byte long so as not to have an empty extension last (WebSphere 7.x, | |
995 | * 8.x are intolerant of that condition) | |
1266eefd | 996 | */ |
3d85c7f4 | 997 | if (hlen > 4) |
ab83e314 MC |
998 | hlen -= 4; |
999 | else | |
10ed1b72 | 1000 | hlen = 1; |
ab83e314 MC |
1001 | |
1002 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_padding) | |
1003 | || !WPACKET_sub_allocate_bytes_u16(pkt, hlen, &padbytes)) { | |
c48ffbcc | 1004 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
eb5fd03b | 1005 | return EXT_RETURN_FAIL; |
ab83e314 MC |
1006 | } |
1007 | memset(padbytes, 0, hlen); | |
1008 | } | |
1009 | ||
b186a592 | 1010 | return EXT_RETURN_SENT; |
ab83e314 MC |
1011 | } |
1012 | ||
ec15acb6 MC |
1013 | /* |
1014 | * Construct the pre_shared_key extension | |
1015 | */ | |
38b051a1 TM |
1016 | EXT_RETURN tls_construct_ctos_psk(SSL_CONNECTION *s, WPACKET *pkt, |
1017 | unsigned int context, | |
f63a17d6 | 1018 | X509 *x, size_t chainidx) |
ec15acb6 MC |
1019 | { |
1020 | #ifndef OPENSSL_NO_TLS1_3 | |
e8a557dc | 1021 | uint32_t agesec, agems = 0; |
add8d0e9 | 1022 | size_t reshashsize = 0, pskhashsize = 0, binderoffset, msglen; |
9368f865 | 1023 | unsigned char *resbinder = NULL, *pskbinder = NULL, *msgstart = NULL; |
15b1688a | 1024 | const EVP_MD *handmd = NULL, *mdres = NULL, *mdpsk = NULL; |
9368f865 | 1025 | int dores = 0; |
38b051a1 | 1026 | SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(s); |
f0131dc0 | 1027 | OSSL_TIME t; |
ec15acb6 | 1028 | |
c96ce52c | 1029 | s->ext.tick_identity = 0; |
ec15acb6 | 1030 | |
d702ad12 MC |
1031 | /* |
1032 | * Note: At this stage of the code we only support adding a single | |
1033 | * resumption PSK. If we add support for multiple PSKs then the length | |
1034 | * calculations in the padding extension will need to be adjusted. | |
1035 | */ | |
1036 | ||
ec15acb6 | 1037 | /* |
08191294 MC |
1038 | * If this is an incompatible or new session then we have nothing to resume |
1039 | * so don't add this extension. | |
ec15acb6 | 1040 | */ |
08191294 | 1041 | if (s->session->ssl_version != TLS1_3_VERSION |
add8d0e9 | 1042 | || (s->session->ext.ticklen == 0 && s->psksession == NULL)) |
b186a592 | 1043 | return EXT_RETURN_NOT_SENT; |
ec15acb6 | 1044 | |
fc7129dc | 1045 | if (s->hello_retry_request == SSL_HRR_PENDING) |
9368f865 MC |
1046 | handmd = ssl_handshake_md(s); |
1047 | ||
9368f865 | 1048 | if (s->session->ext.ticklen != 0) { |
72257204 | 1049 | /* Get the digest associated with the ciphersuite in the session */ |
9368f865 | 1050 | if (s->session->cipher == NULL) { |
c48ffbcc | 1051 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
635c8f77 | 1052 | return EXT_RETURN_FAIL; |
9368f865 | 1053 | } |
38b051a1 | 1054 | mdres = ssl_md(sctx, s->session->cipher->algorithm2); |
9368f865 | 1055 | if (mdres == NULL) { |
72257204 MC |
1056 | /* |
1057 | * Don't recognize this cipher so we can't use the session. | |
1058 | * Ignore it | |
1059 | */ | |
9368f865 MC |
1060 | goto dopsksess; |
1061 | } | |
1062 | ||
fc7129dc | 1063 | if (s->hello_retry_request == SSL_HRR_PENDING && mdres != handmd) { |
9368f865 | 1064 | /* |
72257204 MC |
1065 | * Selected ciphersuite hash does not match the hash for the session |
1066 | * so we can't use it. | |
9368f865 MC |
1067 | */ |
1068 | goto dopsksess; | |
1069 | } | |
1f5b44e9 | 1070 | |
cf3e221b | 1071 | /* |
9368f865 | 1072 | * Technically the C standard just says time() returns a time_t and says |
72257204 MC |
1073 | * nothing about the encoding of that type. In practice most |
1074 | * implementations follow POSIX which holds it as an integral type in | |
1075 | * seconds since epoch. We've already made the assumption that we can do | |
1076 | * this in multiple places in the code, so portability shouldn't be an | |
1077 | * issue. | |
cf3e221b | 1078 | */ |
f0131dc0 P |
1079 | t = ossl_time_subtract(ossl_time_now(), s->session->time); |
1080 | agesec = (uint32_t)ossl_time2seconds(t); | |
7e70213f MC |
1081 | /* |
1082 | * We calculate the age in seconds but the server may work in ms. Due to | |
1083 | * rounding errors we could overestimate the age by up to 1s. It is | |
1084 | * better to underestimate it. Otherwise, if the RTT is very short, when | |
1085 | * the server calculates the age reported by the client it could be | |
1086 | * bigger than the age calculated on the server - which should never | |
1087 | * happen. | |
1088 | */ | |
1089 | if (agesec > 0) | |
1090 | agesec--; | |
cf3e221b | 1091 | |
9368f865 MC |
1092 | if (s->session->ext.tick_lifetime_hint < agesec) { |
1093 | /* Ticket is too old. Ignore it. */ | |
1094 | goto dopsksess; | |
1095 | } | |
ec15acb6 | 1096 | |
9368f865 MC |
1097 | /* |
1098 | * Calculate age in ms. We're just doing it to nearest second. Should be | |
1099 | * good enough. | |
1100 | */ | |
1101 | agems = agesec * (uint32_t)1000; | |
fc24f0bf | 1102 | |
9368f865 MC |
1103 | if (agesec != 0 && agems / (uint32_t)1000 != agesec) { |
1104 | /* | |
72257204 MC |
1105 | * Overflow. Shouldn't happen unless this is a *really* old session. |
1106 | * If so we just ignore it. | |
9368f865 MC |
1107 | */ |
1108 | goto dopsksess; | |
1109 | } | |
ec15acb6 | 1110 | |
ec15acb6 | 1111 | /* |
72257204 MC |
1112 | * Obfuscate the age. Overflow here is fine, this addition is supposed |
1113 | * to be mod 2^32. | |
ec15acb6 | 1114 | */ |
9368f865 MC |
1115 | agems += s->session->ext.tick_age_add; |
1116 | ||
ed576acd | 1117 | reshashsize = EVP_MD_get_size(mdres); |
c96ce52c | 1118 | s->ext.tick_identity++; |
9368f865 | 1119 | dores = 1; |
ec15acb6 MC |
1120 | } |
1121 | ||
9368f865 | 1122 | dopsksess: |
add8d0e9 | 1123 | if (!dores && s->psksession == NULL) |
9368f865 | 1124 | return EXT_RETURN_NOT_SENT; |
ec15acb6 | 1125 | |
add8d0e9 | 1126 | if (s->psksession != NULL) { |
38b051a1 | 1127 | mdpsk = ssl_md(sctx, s->psksession->cipher->algorithm2); |
9368f865 MC |
1128 | if (mdpsk == NULL) { |
1129 | /* | |
1130 | * Don't recognize this cipher so we can't use the session. | |
1131 | * If this happens it's an application bug. | |
1132 | */ | |
c48ffbcc | 1133 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_BAD_PSK); |
635c8f77 | 1134 | return EXT_RETURN_FAIL; |
9368f865 MC |
1135 | } |
1136 | ||
fc7129dc | 1137 | if (s->hello_retry_request == SSL_HRR_PENDING && mdpsk != handmd) { |
9368f865 MC |
1138 | /* |
1139 | * Selected ciphersuite hash does not match the hash for the PSK | |
1140 | * session. This is an application bug. | |
1141 | */ | |
c48ffbcc | 1142 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_BAD_PSK); |
635c8f77 | 1143 | return EXT_RETURN_FAIL; |
9368f865 MC |
1144 | } |
1145 | ||
ed576acd | 1146 | pskhashsize = EVP_MD_get_size(mdpsk); |
9368f865 | 1147 | } |
ec15acb6 MC |
1148 | |
1149 | /* Create the extension, but skip over the binder for now */ | |
1150 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_psk) | |
1151 | || !WPACKET_start_sub_packet_u16(pkt) | |
9368f865 | 1152 | || !WPACKET_start_sub_packet_u16(pkt)) { |
c48ffbcc | 1153 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
635c8f77 | 1154 | return EXT_RETURN_FAIL; |
9368f865 MC |
1155 | } |
1156 | ||
1157 | if (dores) { | |
1158 | if (!WPACKET_sub_memcpy_u16(pkt, s->session->ext.tick, | |
1159 | s->session->ext.ticklen) | |
1160 | || !WPACKET_put_bytes_u32(pkt, agems)) { | |
c48ffbcc | 1161 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
635c8f77 | 1162 | return EXT_RETURN_FAIL; |
9368f865 MC |
1163 | } |
1164 | } | |
1165 | ||
add8d0e9 MC |
1166 | if (s->psksession != NULL) { |
1167 | if (!WPACKET_sub_memcpy_u16(pkt, s->psksession_id, | |
1168 | s->psksession_id_len) | |
9368f865 | 1169 | || !WPACKET_put_bytes_u32(pkt, 0)) { |
c48ffbcc | 1170 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
635c8f77 | 1171 | return EXT_RETURN_FAIL; |
9368f865 | 1172 | } |
c96ce52c | 1173 | s->ext.tick_identity++; |
9368f865 MC |
1174 | } |
1175 | ||
1176 | if (!WPACKET_close(pkt) | |
ec15acb6 MC |
1177 | || !WPACKET_get_total_written(pkt, &binderoffset) |
1178 | || !WPACKET_start_sub_packet_u16(pkt) | |
9368f865 MC |
1179 | || (dores |
1180 | && !WPACKET_sub_allocate_bytes_u8(pkt, reshashsize, &resbinder)) | |
add8d0e9 | 1181 | || (s->psksession != NULL |
9368f865 | 1182 | && !WPACKET_sub_allocate_bytes_u8(pkt, pskhashsize, &pskbinder)) |
ec15acb6 MC |
1183 | || !WPACKET_close(pkt) |
1184 | || !WPACKET_close(pkt) | |
1185 | || !WPACKET_get_total_written(pkt, &msglen) | |
1186 | /* | |
1187 | * We need to fill in all the sub-packet lengths now so we can | |
1188 | * calculate the HMAC of the message up to the binders | |
1189 | */ | |
1190 | || !WPACKET_fill_lengths(pkt)) { | |
c48ffbcc | 1191 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
635c8f77 | 1192 | return EXT_RETURN_FAIL; |
ec15acb6 MC |
1193 | } |
1194 | ||
1195 | msgstart = WPACKET_get_curr(pkt) - msglen; | |
1196 | ||
72257204 MC |
1197 | if (dores |
1198 | && tls_psk_do_binder(s, mdres, msgstart, binderoffset, NULL, | |
1199 | resbinder, s->session, 1, 0) != 1) { | |
635c8f77 MC |
1200 | /* SSLfatal() already called */ |
1201 | return EXT_RETURN_FAIL; | |
ec15acb6 MC |
1202 | } |
1203 | ||
add8d0e9 | 1204 | if (s->psksession != NULL |
72257204 | 1205 | && tls_psk_do_binder(s, mdpsk, msgstart, binderoffset, NULL, |
add8d0e9 | 1206 | pskbinder, s->psksession, 1, 1) != 1) { |
635c8f77 MC |
1207 | /* SSLfatal() already called */ |
1208 | return EXT_RETURN_FAIL; | |
9368f865 MC |
1209 | } |
1210 | ||
635c8f77 | 1211 | return EXT_RETURN_SENT; |
ec15acb6 | 1212 | #else |
89bc9cf6 | 1213 | return EXT_RETURN_NOT_SENT; |
ec15acb6 MC |
1214 | #endif |
1215 | } | |
1216 | ||
38b051a1 | 1217 | EXT_RETURN tls_construct_ctos_post_handshake_auth(SSL_CONNECTION *s, WPACKET *pkt, |
a7e6a3d8 P |
1218 | ossl_unused unsigned int context, |
1219 | ossl_unused X509 *x, | |
1220 | ossl_unused size_t chainidx) | |
9d75dce3 TS |
1221 | { |
1222 | #ifndef OPENSSL_NO_TLS1_3 | |
32097b33 MC |
1223 | if (!s->pha_enabled) |
1224 | return EXT_RETURN_NOT_SENT; | |
9d75dce3 TS |
1225 | |
1226 | /* construct extension - 0 length, no contents */ | |
1227 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_post_handshake_auth) | |
1228 | || !WPACKET_start_sub_packet_u16(pkt) | |
1229 | || !WPACKET_close(pkt)) { | |
c48ffbcc | 1230 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
9d75dce3 TS |
1231 | return EXT_RETURN_FAIL; |
1232 | } | |
1233 | ||
1234 | s->post_handshake_auth = SSL_PHA_EXT_SENT; | |
1235 | ||
1236 | return EXT_RETURN_SENT; | |
1237 | #else | |
1238 | return EXT_RETURN_NOT_SENT; | |
1239 | #endif | |
1240 | } | |
1241 | ||
1242 | ||
6dd083fd MC |
1243 | /* |
1244 | * Parse the server's renegotiation binding and abort if it's not right | |
1245 | */ | |
38b051a1 TM |
1246 | int tls_parse_stoc_renegotiate(SSL_CONNECTION *s, PACKET *pkt, |
1247 | unsigned int context, | |
f63a17d6 | 1248 | X509 *x, size_t chainidx) |
6dd083fd | 1249 | { |
555cbb32 TS |
1250 | size_t expected_len = s->s3.previous_client_finished_len |
1251 | + s->s3.previous_server_finished_len; | |
6dd083fd MC |
1252 | size_t ilen; |
1253 | const unsigned char *data; | |
1254 | ||
1255 | /* Check for logic errors */ | |
b77f3ed1 | 1256 | if (!ossl_assert(expected_len == 0 |
555cbb32 | 1257 | || s->s3.previous_client_finished_len != 0) |
b77f3ed1 | 1258 | || !ossl_assert(expected_len == 0 |
555cbb32 | 1259 | || s->s3.previous_server_finished_len != 0)) { |
c48ffbcc | 1260 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
b77f3ed1 MC |
1261 | return 0; |
1262 | } | |
6dd083fd MC |
1263 | |
1264 | /* Parse the length byte */ | |
1265 | if (!PACKET_get_1_len(pkt, &ilen)) { | |
c48ffbcc | 1266 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_RENEGOTIATION_ENCODING_ERR); |
6dd083fd MC |
1267 | return 0; |
1268 | } | |
1269 | ||
1270 | /* Consistency check */ | |
1271 | if (PACKET_remaining(pkt) != ilen) { | |
c48ffbcc | 1272 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_RENEGOTIATION_ENCODING_ERR); |
6dd083fd MC |
1273 | return 0; |
1274 | } | |
1275 | ||
1276 | /* Check that the extension matches */ | |
1277 | if (ilen != expected_len) { | |
c48ffbcc | 1278 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_RENEGOTIATION_MISMATCH); |
6dd083fd MC |
1279 | return 0; |
1280 | } | |
1281 | ||
555cbb32 TS |
1282 | if (!PACKET_get_bytes(pkt, &data, s->s3.previous_client_finished_len) |
1283 | || memcmp(data, s->s3.previous_client_finished, | |
1284 | s->s3.previous_client_finished_len) != 0) { | |
c48ffbcc | 1285 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_RENEGOTIATION_MISMATCH); |
6dd083fd MC |
1286 | return 0; |
1287 | } | |
1288 | ||
555cbb32 TS |
1289 | if (!PACKET_get_bytes(pkt, &data, s->s3.previous_server_finished_len) |
1290 | || memcmp(data, s->s3.previous_server_finished, | |
1291 | s->s3.previous_server_finished_len) != 0) { | |
c48ffbcc | 1292 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_RENEGOTIATION_MISMATCH); |
6dd083fd MC |
1293 | return 0; |
1294 | } | |
555cbb32 | 1295 | s->s3.send_connection_binding = 1; |
6dd083fd MC |
1296 | |
1297 | return 1; | |
1298 | } | |
1299 | ||
cf72c757 | 1300 | /* Parse the server's max fragment len extension packet */ |
38b051a1 TM |
1301 | int tls_parse_stoc_maxfragmentlen(SSL_CONNECTION *s, PACKET *pkt, |
1302 | unsigned int context, | |
f63a17d6 | 1303 | X509 *x, size_t chainidx) |
cf72c757 F |
1304 | { |
1305 | unsigned int value; | |
1306 | ||
1307 | if (PACKET_remaining(pkt) != 1 || !PACKET_get_1(pkt, &value)) { | |
c48ffbcc | 1308 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); |
cf72c757 F |
1309 | return 0; |
1310 | } | |
1311 | ||
1312 | /* |value| should contains a valid max-fragment-length code. */ | |
1313 | if (!IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value)) { | |
f63a17d6 | 1314 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, |
f63a17d6 | 1315 | SSL_R_SSL3_EXT_INVALID_MAX_FRAGMENT_LENGTH); |
cf72c757 F |
1316 | return 0; |
1317 | } | |
1318 | ||
1319 | /* Must be the same value as client-configured one who was sent to server */ | |
1320 | /*- | |
1321 | * RFC 6066: if a client receives a maximum fragment length negotiation | |
1322 | * response that differs from the length it requested, ... | |
1323 | * It must abort with SSL_AD_ILLEGAL_PARAMETER alert | |
1324 | */ | |
1325 | if (value != s->ext.max_fragment_len_mode) { | |
f63a17d6 | 1326 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, |
f63a17d6 | 1327 | SSL_R_SSL3_EXT_INVALID_MAX_FRAGMENT_LENGTH); |
cf72c757 F |
1328 | return 0; |
1329 | } | |
1330 | ||
1331 | /* | |
1332 | * Maximum Fragment Length Negotiation succeeded. | |
1333 | * The negotiated Maximum Fragment Length is binding now. | |
1334 | */ | |
1335 | s->session->ext.max_fragment_len_mode = value; | |
1336 | ||
1337 | return 1; | |
1338 | } | |
1339 | ||
38b051a1 TM |
1340 | int tls_parse_stoc_server_name(SSL_CONNECTION *s, PACKET *pkt, |
1341 | unsigned int context, | |
f63a17d6 | 1342 | X509 *x, size_t chainidx) |
6dd083fd | 1343 | { |
fb34a0f4 | 1344 | if (s->ext.hostname == NULL) { |
c48ffbcc | 1345 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
fb34a0f4 MC |
1346 | return 0; |
1347 | } | |
1348 | ||
1349 | if (PACKET_remaining(pkt) > 0) { | |
c48ffbcc | 1350 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); |
6dd083fd MC |
1351 | return 0; |
1352 | } | |
1353 | ||
1354 | if (!s->hit) { | |
aff8c126 | 1355 | if (s->session->ext.hostname != NULL) { |
c48ffbcc | 1356 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
6dd083fd MC |
1357 | return 0; |
1358 | } | |
aff8c126 RS |
1359 | s->session->ext.hostname = OPENSSL_strdup(s->ext.hostname); |
1360 | if (s->session->ext.hostname == NULL) { | |
c48ffbcc | 1361 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
6dd083fd MC |
1362 | return 0; |
1363 | } | |
1364 | } | |
1365 | ||
1366 | return 1; | |
1367 | } | |
1368 | ||
38b051a1 TM |
1369 | int tls_parse_stoc_ec_pt_formats(SSL_CONNECTION *s, PACKET *pkt, |
1370 | unsigned int context, | |
f63a17d6 | 1371 | X509 *x, size_t chainidx) |
6dd083fd | 1372 | { |
848a950b | 1373 | size_t ecpointformats_len; |
6dd083fd MC |
1374 | PACKET ecptformatlist; |
1375 | ||
1376 | if (!PACKET_as_length_prefixed_1(pkt, &ecptformatlist)) { | |
c48ffbcc | 1377 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); |
6dd083fd MC |
1378 | return 0; |
1379 | } | |
1380 | if (!s->hit) { | |
aff8c126 | 1381 | ecpointformats_len = PACKET_remaining(&ecptformatlist); |
848a950b | 1382 | if (ecpointformats_len == 0) { |
c48ffbcc | 1383 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH); |
848a950b MC |
1384 | return 0; |
1385 | } | |
6dd083fd | 1386 | |
cd0fb43c MC |
1387 | s->ext.peer_ecpointformats_len = 0; |
1388 | OPENSSL_free(s->ext.peer_ecpointformats); | |
1389 | s->ext.peer_ecpointformats = OPENSSL_malloc(ecpointformats_len); | |
1390 | if (s->ext.peer_ecpointformats == NULL) { | |
39a14059 | 1391 | s->ext.peer_ecpointformats_len = 0; |
c48ffbcc | 1392 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
6dd083fd MC |
1393 | return 0; |
1394 | } | |
1395 | ||
cd0fb43c | 1396 | s->ext.peer_ecpointformats_len = ecpointformats_len; |
6dd083fd MC |
1397 | |
1398 | if (!PACKET_copy_bytes(&ecptformatlist, | |
cd0fb43c | 1399 | s->ext.peer_ecpointformats, |
aff8c126 | 1400 | ecpointformats_len)) { |
c48ffbcc | 1401 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
6dd083fd MC |
1402 | return 0; |
1403 | } | |
1404 | } | |
1405 | ||
1406 | return 1; | |
1407 | } | |
6dd083fd | 1408 | |
38b051a1 TM |
1409 | int tls_parse_stoc_session_ticket(SSL_CONNECTION *s, PACKET *pkt, |
1410 | unsigned int context, | |
f63a17d6 | 1411 | X509 *x, size_t chainidx) |
6dd083fd | 1412 | { |
38b051a1 TM |
1413 | SSL *ssl = SSL_CONNECTION_GET_SSL(s); |
1414 | ||
aff8c126 | 1415 | if (s->ext.session_ticket_cb != NULL && |
38b051a1 TM |
1416 | !s->ext.session_ticket_cb(ssl, PACKET_data(pkt), |
1417 | PACKET_remaining(pkt), | |
1418 | s->ext.session_ticket_cb_arg)) { | |
c48ffbcc | 1419 | SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_BAD_EXTENSION); |
6dd083fd MC |
1420 | return 0; |
1421 | } | |
1266eefd | 1422 | |
fb34a0f4 | 1423 | if (!tls_use_ticket(s)) { |
c48ffbcc | 1424 | SSLfatal(s, SSL_AD_UNSUPPORTED_EXTENSION, SSL_R_BAD_EXTENSION); |
6dd083fd MC |
1425 | return 0; |
1426 | } | |
fb34a0f4 | 1427 | if (PACKET_remaining(pkt) > 0) { |
c48ffbcc | 1428 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); |
fb34a0f4 MC |
1429 | return 0; |
1430 | } | |
1266eefd | 1431 | |
aff8c126 | 1432 | s->ext.ticket_expected = 1; |
6dd083fd MC |
1433 | |
1434 | return 1; | |
1435 | } | |
1436 | ||
ab83e314 | 1437 | #ifndef OPENSSL_NO_OCSP |
38b051a1 TM |
1438 | int tls_parse_stoc_status_request(SSL_CONNECTION *s, PACKET *pkt, |
1439 | unsigned int context, | |
f63a17d6 | 1440 | X509 *x, size_t chainidx) |
6dd083fd | 1441 | { |
5de683d2 MC |
1442 | if (context == SSL_EXT_TLS1_3_CERTIFICATE_REQUEST) { |
1443 | /* We ignore this if the server sends a CertificateRequest */ | |
5de683d2 MC |
1444 | return 1; |
1445 | } | |
1446 | ||
6dd083fd | 1447 | /* |
f63e4288 MC |
1448 | * MUST only be sent if we've requested a status |
1449 | * request message. In TLS <= 1.2 it must also be empty. | |
6dd083fd | 1450 | */ |
fb34a0f4 | 1451 | if (s->ext.status_type != TLSEXT_STATUSTYPE_ocsp) { |
c48ffbcc | 1452 | SSLfatal(s, SSL_AD_UNSUPPORTED_EXTENSION, SSL_R_BAD_EXTENSION); |
6dd083fd MC |
1453 | return 0; |
1454 | } | |
38b051a1 | 1455 | if (!SSL_CONNECTION_IS_TLS13(s) && PACKET_remaining(pkt) > 0) { |
c48ffbcc | 1456 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); |
fb34a0f4 MC |
1457 | return 0; |
1458 | } | |
f63e4288 | 1459 | |
38b051a1 | 1460 | if (SSL_CONNECTION_IS_TLS13(s)) { |
f63e4288 | 1461 | /* We only know how to handle this if it's for the first Certificate in |
1ee4b98e | 1462 | * the chain. We ignore any other responses. |
f63e4288 | 1463 | */ |
8521ced6 | 1464 | if (chainidx != 0) |
f63e4288 | 1465 | return 1; |
f63a17d6 MC |
1466 | |
1467 | /* SSLfatal() already called */ | |
1468 | return tls_process_cert_status_body(s, pkt); | |
f63e4288 MC |
1469 | } |
1470 | ||
6dd083fd | 1471 | /* Set flag to expect CertificateStatus message */ |
aff8c126 | 1472 | s->ext.status_expected = 1; |
6dd083fd MC |
1473 | |
1474 | return 1; | |
1475 | } | |
ab83e314 | 1476 | #endif |
6dd083fd MC |
1477 | |
1478 | ||
1479 | #ifndef OPENSSL_NO_CT | |
38b051a1 TM |
1480 | int tls_parse_stoc_sct(SSL_CONNECTION *s, PACKET *pkt, unsigned int context, |
1481 | X509 *x, size_t chainidx) | |
6dd083fd | 1482 | { |
5de683d2 MC |
1483 | if (context == SSL_EXT_TLS1_3_CERTIFICATE_REQUEST) { |
1484 | /* We ignore this if the server sends it in a CertificateRequest */ | |
5de683d2 MC |
1485 | return 1; |
1486 | } | |
1487 | ||
6dd083fd MC |
1488 | /* |
1489 | * Only take it if we asked for it - i.e if there is no CT validation | |
1490 | * callback set, then a custom extension MAY be processing it, so we | |
1491 | * need to let control continue to flow to that. | |
1492 | */ | |
1493 | if (s->ct_validation_callback != NULL) { | |
1494 | size_t size = PACKET_remaining(pkt); | |
1495 | ||
1496 | /* Simply copy it off for later processing */ | |
aff8c126 RS |
1497 | OPENSSL_free(s->ext.scts); |
1498 | s->ext.scts = NULL; | |
1266eefd | 1499 | |
3a63c0ed | 1500 | s->ext.scts_len = (uint16_t)size; |
6dd083fd | 1501 | if (size > 0) { |
aff8c126 | 1502 | s->ext.scts = OPENSSL_malloc(size); |
39a14059 MC |
1503 | if (s->ext.scts == NULL) { |
1504 | s->ext.scts_len = 0; | |
e077455e | 1505 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB); |
39a14059 MC |
1506 | return 0; |
1507 | } | |
1508 | if (!PACKET_copy_bytes(pkt, s->ext.scts, size)) { | |
c48ffbcc | 1509 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
6dd083fd MC |
1510 | return 0; |
1511 | } | |
1512 | } | |
1513 | } else { | |
b186a592 MC |
1514 | ENDPOINT role = (context & SSL_EXT_TLS1_2_SERVER_HELLO) != 0 |
1515 | ? ENDPOINT_CLIENT : ENDPOINT_BOTH; | |
1516 | ||
1517 | /* | |
1518 | * If we didn't ask for it then there must be a custom extension, | |
1519 | * otherwise this is unsolicited. | |
1520 | */ | |
1521 | if (custom_ext_find(&s->cert->custext, role, | |
1522 | TLSEXT_TYPE_signed_certificate_timestamp, | |
1523 | NULL) == NULL) { | |
c48ffbcc | 1524 | SSLfatal(s, TLS1_AD_UNSUPPORTED_EXTENSION, SSL_R_BAD_EXTENSION); |
b186a592 MC |
1525 | return 0; |
1526 | } | |
1527 | ||
f63a17d6 | 1528 | if (!custom_ext_parse(s, context, |
43ae5eed MC |
1529 | TLSEXT_TYPE_signed_certificate_timestamp, |
1530 | PACKET_data(pkt), PACKET_remaining(pkt), | |
f63a17d6 MC |
1531 | x, chainidx)) { |
1532 | /* SSLfatal already called */ | |
6dd083fd | 1533 | return 0; |
f63a17d6 | 1534 | } |
6dd083fd MC |
1535 | } |
1536 | ||
1537 | return 1; | |
1538 | } | |
1539 | #endif | |
1540 | ||
1541 | ||
1542 | #ifndef OPENSSL_NO_NEXTPROTONEG | |
1543 | /* | |
1544 | * ssl_next_proto_validate validates a Next Protocol Negotiation block. No | |
1545 | * elements of zero length are allowed and the set of elements must exactly | |
1546 | * fill the length of the block. Returns 1 on success or 0 on failure. | |
1547 | */ | |
38b051a1 | 1548 | static int ssl_next_proto_validate(SSL_CONNECTION *s, PACKET *pkt) |
6dd083fd MC |
1549 | { |
1550 | PACKET tmp_protocol; | |
1551 | ||
1552 | while (PACKET_remaining(pkt)) { | |
1553 | if (!PACKET_get_length_prefixed_1(pkt, &tmp_protocol) | |
f63a17d6 | 1554 | || PACKET_remaining(&tmp_protocol) == 0) { |
c48ffbcc | 1555 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); |
6dd083fd | 1556 | return 0; |
f63a17d6 | 1557 | } |
6dd083fd MC |
1558 | } |
1559 | ||
1560 | return 1; | |
1561 | } | |
1562 | ||
38b051a1 TM |
1563 | int tls_parse_stoc_npn(SSL_CONNECTION *s, PACKET *pkt, unsigned int context, |
1564 | X509 *x, size_t chainidx) | |
6dd083fd MC |
1565 | { |
1566 | unsigned char *selected; | |
1567 | unsigned char selected_len; | |
1568 | PACKET tmppkt; | |
38b051a1 | 1569 | SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(s); |
6dd083fd | 1570 | |
1266eefd | 1571 | /* Check if we are in a renegotiation. If so ignore this extension */ |
c7f47786 | 1572 | if (!SSL_IS_FIRST_HANDSHAKE(s)) |
6dd083fd MC |
1573 | return 1; |
1574 | ||
1575 | /* We must have requested it. */ | |
38b051a1 | 1576 | if (sctx->ext.npn_select_cb == NULL) { |
c48ffbcc | 1577 | SSLfatal(s, SSL_AD_UNSUPPORTED_EXTENSION, SSL_R_BAD_EXTENSION); |
6dd083fd MC |
1578 | return 0; |
1579 | } | |
1266eefd | 1580 | |
6dd083fd MC |
1581 | /* The data must be valid */ |
1582 | tmppkt = *pkt; | |
f63a17d6 MC |
1583 | if (!ssl_next_proto_validate(s, &tmppkt)) { |
1584 | /* SSLfatal() already called */ | |
6dd083fd MC |
1585 | return 0; |
1586 | } | |
38b051a1 TM |
1587 | if (sctx->ext.npn_select_cb(SSL_CONNECTION_GET_SSL(s), |
1588 | &selected, &selected_len, | |
1589 | PACKET_data(pkt), PACKET_remaining(pkt), | |
1590 | sctx->ext.npn_select_cb_arg) != | |
6dd083fd | 1591 | SSL_TLSEXT_ERR_OK) { |
c48ffbcc | 1592 | SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_BAD_EXTENSION); |
6dd083fd MC |
1593 | return 0; |
1594 | } | |
1266eefd | 1595 | |
6dd083fd MC |
1596 | /* |
1597 | * Could be non-NULL if server has sent multiple NPN extensions in | |
1598 | * a single Serverhello | |
1599 | */ | |
aff8c126 RS |
1600 | OPENSSL_free(s->ext.npn); |
1601 | s->ext.npn = OPENSSL_malloc(selected_len); | |
1602 | if (s->ext.npn == NULL) { | |
39a14059 | 1603 | s->ext.npn_len = 0; |
c48ffbcc | 1604 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
6dd083fd MC |
1605 | return 0; |
1606 | } | |
1607 | ||
aff8c126 RS |
1608 | memcpy(s->ext.npn, selected, selected_len); |
1609 | s->ext.npn_len = selected_len; | |
555cbb32 | 1610 | s->s3.npn_seen = 1; |
6dd083fd MC |
1611 | |
1612 | return 1; | |
1613 | } | |
1614 | #endif | |
1615 | ||
38b051a1 TM |
1616 | int tls_parse_stoc_alpn(SSL_CONNECTION *s, PACKET *pkt, unsigned int context, |
1617 | X509 *x, size_t chainidx) | |
6dd083fd MC |
1618 | { |
1619 | size_t len; | |
1620 | ||
1621 | /* We must have requested it. */ | |
555cbb32 | 1622 | if (!s->s3.alpn_sent) { |
c48ffbcc | 1623 | SSLfatal(s, SSL_AD_UNSUPPORTED_EXTENSION, SSL_R_BAD_EXTENSION); |
6dd083fd MC |
1624 | return 0; |
1625 | } | |
1626 | /*- | |
1627 | * The extension data consists of: | |
1628 | * uint16 list_length | |
1629 | * uint8 proto_length; | |
1630 | * uint8 proto[proto_length]; | |
1631 | */ | |
1632 | if (!PACKET_get_net_2_len(pkt, &len) | |
1633 | || PACKET_remaining(pkt) != len || !PACKET_get_1_len(pkt, &len) | |
1634 | || PACKET_remaining(pkt) != len) { | |
c48ffbcc | 1635 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); |
6dd083fd MC |
1636 | return 0; |
1637 | } | |
555cbb32 TS |
1638 | OPENSSL_free(s->s3.alpn_selected); |
1639 | s->s3.alpn_selected = OPENSSL_malloc(len); | |
1640 | if (s->s3.alpn_selected == NULL) { | |
39a14059 | 1641 | s->s3.alpn_selected_len = 0; |
c48ffbcc | 1642 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
6dd083fd MC |
1643 | return 0; |
1644 | } | |
555cbb32 | 1645 | if (!PACKET_copy_bytes(pkt, s->s3.alpn_selected, len)) { |
c48ffbcc | 1646 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); |
6dd083fd MC |
1647 | return 0; |
1648 | } | |
555cbb32 | 1649 | s->s3.alpn_selected_len = len; |
6dd083fd | 1650 | |
0ef28021 MC |
1651 | if (s->session->ext.alpn_selected == NULL |
1652 | || s->session->ext.alpn_selected_len != len | |
555cbb32 | 1653 | || memcmp(s->session->ext.alpn_selected, s->s3.alpn_selected, len) |
0ef28021 | 1654 | != 0) { |
4be3a7c7 MC |
1655 | /* ALPN not consistent with the old session so cannot use early_data */ |
1656 | s->ext.early_data_ok = 0; | |
1657 | } | |
1658 | if (!s->hit) { | |
9d5db9c9 MC |
1659 | /* |
1660 | * This is a new session and so alpn_selected should have been | |
1661 | * initialised to NULL. We should update it with the selected ALPN. | |
1662 | */ | |
1663 | if (!ossl_assert(s->session->ext.alpn_selected == NULL)) { | |
c48ffbcc | 1664 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
9d5db9c9 MC |
1665 | return 0; |
1666 | } | |
4be3a7c7 | 1667 | s->session->ext.alpn_selected = |
555cbb32 | 1668 | OPENSSL_memdup(s->s3.alpn_selected, s->s3.alpn_selected_len); |
4be3a7c7 | 1669 | if (s->session->ext.alpn_selected == NULL) { |
39a14059 | 1670 | s->session->ext.alpn_selected_len = 0; |
c48ffbcc | 1671 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
4be3a7c7 MC |
1672 | return 0; |
1673 | } | |
555cbb32 | 1674 | s->session->ext.alpn_selected_len = s->s3.alpn_selected_len; |
ae8d7d99 MC |
1675 | } |
1676 | ||
6dd083fd MC |
1677 | return 1; |
1678 | } | |
1679 | ||
1680 | #ifndef OPENSSL_NO_SRTP | |
38b051a1 TM |
1681 | int tls_parse_stoc_use_srtp(SSL_CONNECTION *s, PACKET *pkt, |
1682 | unsigned int context, X509 *x, size_t chainidx) | |
6dd083fd MC |
1683 | { |
1684 | unsigned int id, ct, mki; | |
1685 | int i; | |
1686 | STACK_OF(SRTP_PROTECTION_PROFILE) *clnt; | |
1687 | SRTP_PROTECTION_PROFILE *prof; | |
1688 | ||
1266eefd MC |
1689 | if (!PACKET_get_net_2(pkt, &ct) || ct != 2 |
1690 | || !PACKET_get_net_2(pkt, &id) | |
1691 | || !PACKET_get_1(pkt, &mki) | |
1692 | || PACKET_remaining(pkt) != 0) { | |
c48ffbcc | 1693 | SSLfatal(s, SSL_AD_DECODE_ERROR, |
f63a17d6 | 1694 | SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); |
6dd083fd MC |
1695 | return 0; |
1696 | } | |
1697 | ||
1698 | if (mki != 0) { | |
1699 | /* Must be no MKI, since we never offer one */ | |
c48ffbcc | 1700 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_BAD_SRTP_MKI_VALUE); |
6dd083fd MC |
1701 | return 0; |
1702 | } | |
1703 | ||
6dd083fd | 1704 | /* Throw an error if the server gave us an unsolicited extension */ |
38b051a1 | 1705 | clnt = SSL_get_srtp_profiles(SSL_CONNECTION_GET_SSL(s)); |
6dd083fd | 1706 | if (clnt == NULL) { |
c48ffbcc | 1707 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_NO_SRTP_PROFILES); |
6dd083fd MC |
1708 | return 0; |
1709 | } | |
1710 | ||
1711 | /* | |
1712 | * Check to see if the server gave us something we support (and | |
1713 | * presumably offered) | |
1714 | */ | |
1715 | for (i = 0; i < sk_SRTP_PROTECTION_PROFILE_num(clnt); i++) { | |
1716 | prof = sk_SRTP_PROTECTION_PROFILE_value(clnt, i); | |
1717 | ||
1718 | if (prof->id == id) { | |
1719 | s->srtp_profile = prof; | |
6dd083fd MC |
1720 | return 1; |
1721 | } | |
1722 | } | |
1723 | ||
c48ffbcc | 1724 | SSLfatal(s, SSL_AD_DECODE_ERROR, |
f63a17d6 | 1725 | SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); |
6dd083fd MC |
1726 | return 0; |
1727 | } | |
1728 | #endif | |
1729 | ||
38b051a1 TM |
1730 | int tls_parse_stoc_etm(SSL_CONNECTION *s, PACKET *pkt, unsigned int context, |
1731 | X509 *x, size_t chainidx) | |
6dd083fd MC |
1732 | { |
1733 | /* Ignore if inappropriate ciphersuite */ | |
1734 | if (!(s->options & SSL_OP_NO_ENCRYPT_THEN_MAC) | |
555cbb32 | 1735 | && s->s3.tmp.new_cipher->algorithm_mac != SSL_AEAD |
d724da69 DB |
1736 | && s->s3.tmp.new_cipher->algorithm_enc != SSL_RC4 |
1737 | && s->s3.tmp.new_cipher->algorithm_enc != SSL_eGOST2814789CNT | |
1738 | && s->s3.tmp.new_cipher->algorithm_enc != SSL_eGOST2814789CNT12 | |
1739 | && s->s3.tmp.new_cipher->algorithm_enc != SSL_MAGMA | |
1740 | && s->s3.tmp.new_cipher->algorithm_enc != SSL_KUZNYECHIK) | |
28a31a0a | 1741 | s->ext.use_etm = 1; |
6dd083fd MC |
1742 | |
1743 | return 1; | |
1744 | } | |
1745 | ||
38b051a1 TM |
1746 | int tls_parse_stoc_ems(SSL_CONNECTION *s, PACKET *pkt, unsigned int context, |
1747 | X509 *x, size_t chainidx) | |
6dd083fd | 1748 | { |
088dfa13 TS |
1749 | if (s->options & SSL_OP_NO_EXTENDED_MASTER_SECRET) |
1750 | return 1; | |
555cbb32 | 1751 | s->s3.flags |= TLS1_FLAGS_RECEIVED_EXTMS; |
6dd083fd MC |
1752 | if (!s->hit) |
1753 | s->session->flags |= SSL_SESS_FLAG_EXTMS; | |
1754 | ||
1755 | return 1; | |
1756 | } | |
1757 | ||
38b051a1 TM |
1758 | int tls_parse_stoc_supported_versions(SSL_CONNECTION *s, PACKET *pkt, |
1759 | unsigned int context, | |
88050dd1 MC |
1760 | X509 *x, size_t chainidx) |
1761 | { | |
1762 | unsigned int version; | |
1763 | ||
1764 | if (!PACKET_get_net_2(pkt, &version) | |
1765 | || PACKET_remaining(pkt) != 0) { | |
c48ffbcc | 1766 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_LENGTH_MISMATCH); |
88050dd1 MC |
1767 | return 0; |
1768 | } | |
1769 | ||
27e462f1 MC |
1770 | /* |
1771 | * The only protocol version we support which is valid in this extension in | |
1772 | * a ServerHello is TLSv1.3 therefore we shouldn't be getting anything else. | |
1773 | */ | |
1774 | if (version != TLS1_3_VERSION) { | |
1775 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, | |
27e462f1 MC |
1776 | SSL_R_BAD_PROTOCOL_VERSION_NUMBER); |
1777 | return 0; | |
1778 | } | |
1779 | ||
426dfc9f | 1780 | /* We ignore this extension for HRRs except to sanity check it */ |
27e462f1 | 1781 | if (context == SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST) |
426dfc9f | 1782 | return 1; |
426dfc9f | 1783 | |
88050dd1 MC |
1784 | /* We just set it here. We validate it in ssl_choose_client_version */ |
1785 | s->version = version; | |
1d367677 MC |
1786 | if (!ssl_set_record_protocol_version(s, version)) { |
1787 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); | |
1788 | return 0; | |
1789 | } | |
88050dd1 MC |
1790 | |
1791 | return 1; | |
1792 | } | |
1793 | ||
38b051a1 TM |
1794 | int tls_parse_stoc_key_share(SSL_CONNECTION *s, PACKET *pkt, |
1795 | unsigned int context, X509 *x, | |
f63a17d6 | 1796 | size_t chainidx) |
6dd083fd | 1797 | { |
3cf96e88 | 1798 | #ifndef OPENSSL_NO_TLS1_3 |
6dd083fd MC |
1799 | unsigned int group_id; |
1800 | PACKET encoded_pt; | |
555cbb32 | 1801 | EVP_PKEY *ckey = s->s3.tmp.pkey, *skey = NULL; |
a011b586 | 1802 | const TLS_GROUP_INFO *ginf = NULL; |
6dd083fd MC |
1803 | |
1804 | /* Sanity check */ | |
555cbb32 | 1805 | if (ckey == NULL || s->s3.peer_tmp != NULL) { |
c48ffbcc | 1806 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
6dd083fd MC |
1807 | return 0; |
1808 | } | |
1809 | ||
1810 | if (!PACKET_get_net_2(pkt, &group_id)) { | |
c48ffbcc | 1811 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_LENGTH_MISMATCH); |
6dd083fd MC |
1812 | return 0; |
1813 | } | |
1814 | ||
fe874d27 | 1815 | if ((context & SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST) != 0) { |
f48d826e DSH |
1816 | const uint16_t *pgroups = NULL; |
1817 | size_t i, num_groups; | |
3847d426 MC |
1818 | |
1819 | if (PACKET_remaining(pkt) != 0) { | |
c48ffbcc | 1820 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_LENGTH_MISMATCH); |
3847d426 MC |
1821 | return 0; |
1822 | } | |
1823 | ||
1824 | /* | |
1825 | * It is an error if the HelloRetryRequest wants a key_share that we | |
1826 | * already sent in the first ClientHello | |
1827 | */ | |
555cbb32 | 1828 | if (group_id == s->s3.group_id) { |
c48ffbcc | 1829 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_BAD_KEY_SHARE); |
3847d426 MC |
1830 | return 0; |
1831 | } | |
1832 | ||
1833 | /* Validate the selected group is one we support */ | |
f48d826e DSH |
1834 | tls1_get_supported_groups(s, &pgroups, &num_groups); |
1835 | for (i = 0; i < num_groups; i++) { | |
1836 | if (group_id == pgroups[i]) | |
3847d426 MC |
1837 | break; |
1838 | } | |
f48d826e | 1839 | if (i >= num_groups |
247b8e52 MC |
1840 | || !tls_group_allowed(s, group_id, SSL_SECOP_CURVE_SUPPORTED) |
1841 | || !tls_valid_group(s, group_id, TLS1_3_VERSION, TLS1_3_VERSION, | |
1842 | 0, NULL)) { | |
c48ffbcc | 1843 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_BAD_KEY_SHARE); |
3847d426 MC |
1844 | return 0; |
1845 | } | |
1846 | ||
555cbb32 TS |
1847 | s->s3.group_id = group_id; |
1848 | EVP_PKEY_free(s->s3.tmp.pkey); | |
1849 | s->s3.tmp.pkey = NULL; | |
3847d426 MC |
1850 | return 1; |
1851 | } | |
1852 | ||
555cbb32 | 1853 | if (group_id != s->s3.group_id) { |
6dd083fd MC |
1854 | /* |
1855 | * This isn't for the group that we sent in the original | |
1856 | * key_share! | |
1857 | */ | |
c48ffbcc | 1858 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_BAD_KEY_SHARE); |
6dd083fd MC |
1859 | return 0; |
1860 | } | |
aa6bd216 BK |
1861 | /* Retain this group in the SSL_SESSION */ |
1862 | if (!s->hit) { | |
1863 | s->session->kex_group = group_id; | |
1864 | } else if (group_id != s->session->kex_group) { | |
1865 | /* | |
1866 | * If this is a resumption but changed what group was used, we need | |
1867 | * to record the new group in the session, but the session is not | |
1868 | * a new session and could be in use by other threads. So, make | |
1869 | * a copy of the session to record the new information so that it's | |
1870 | * useful for any sessions resumed from tickets issued on this | |
1871 | * connection. | |
1872 | */ | |
1873 | SSL_SESSION *new_sess; | |
1874 | ||
1875 | if ((new_sess = ssl_session_dup(s->session, 0)) == NULL) { | |
e077455e | 1876 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_SSL_LIB); |
aa6bd216 BK |
1877 | return 0; |
1878 | } | |
1879 | SSL_SESSION_free(s->session); | |
1880 | s->session = new_sess; | |
1881 | s->session->kex_group = group_id; | |
1882 | } | |
6dd083fd | 1883 | |
38b051a1 TM |
1884 | if ((ginf = tls1_group_id_lookup(SSL_CONNECTION_GET_CTX(s), |
1885 | group_id)) == NULL) { | |
c48ffbcc | 1886 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_BAD_KEY_SHARE); |
a011b586 NT |
1887 | return 0; |
1888 | } | |
1889 | ||
6dd083fd MC |
1890 | if (!PACKET_as_length_prefixed_2(pkt, &encoded_pt) |
1891 | || PACKET_remaining(&encoded_pt) == 0) { | |
c48ffbcc | 1892 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_LENGTH_MISMATCH); |
6dd083fd MC |
1893 | return 0; |
1894 | } | |
1895 | ||
a011b586 NT |
1896 | if (!ginf->is_kem) { |
1897 | /* Regular KEX */ | |
1898 | skey = EVP_PKEY_new(); | |
1899 | if (skey == NULL || EVP_PKEY_copy_parameters(skey, ckey) <= 0) { | |
c48ffbcc | 1900 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_COPY_PARAMETERS_FAILED); |
b3c34401 | 1901 | EVP_PKEY_free(skey); |
a011b586 NT |
1902 | return 0; |
1903 | } | |
afce590b | 1904 | |
d5530efa TM |
1905 | if (tls13_set_encoded_pub_key(skey, PACKET_data(&encoded_pt), |
1906 | PACKET_remaining(&encoded_pt)) <= 0) { | |
c48ffbcc | 1907 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_BAD_ECPOINT); |
a011b586 NT |
1908 | EVP_PKEY_free(skey); |
1909 | return 0; | |
1910 | } | |
6dd083fd | 1911 | |
a011b586 NT |
1912 | if (ssl_derive(s, ckey, skey, 1) == 0) { |
1913 | /* SSLfatal() already called */ | |
1914 | EVP_PKEY_free(skey); | |
1915 | return 0; | |
1916 | } | |
1917 | s->s3.peer_tmp = skey; | |
1918 | } else { | |
1919 | /* KEM Mode */ | |
1920 | const unsigned char *ct = PACKET_data(&encoded_pt); | |
1921 | size_t ctlen = PACKET_remaining(&encoded_pt); | |
1922 | ||
1923 | if (ssl_decapsulate(s, ckey, ct, ctlen, 1) == 0) { | |
1924 | /* SSLfatal() already called */ | |
1925 | return 0; | |
1926 | } | |
6dd083fd | 1927 | } |
aa6bd216 | 1928 | s->s3.did_kex = 1; |
3cf96e88 | 1929 | #endif |
6dd083fd MC |
1930 | |
1931 | return 1; | |
1932 | } | |
4ff65f77 | 1933 | |
38b051a1 TM |
1934 | int tls_parse_stoc_cookie(SSL_CONNECTION *s, PACKET *pkt, unsigned int context, |
1935 | X509 *x, size_t chainidx) | |
cfef5027 MC |
1936 | { |
1937 | PACKET cookie; | |
1938 | ||
1939 | if (!PACKET_as_length_prefixed_2(pkt, &cookie) | |
1940 | || !PACKET_memdup(&cookie, &s->ext.tls13_cookie, | |
1941 | &s->ext.tls13_cookie_len)) { | |
c48ffbcc | 1942 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_LENGTH_MISMATCH); |
cfef5027 MC |
1943 | return 0; |
1944 | } | |
1945 | ||
1946 | return 1; | |
1947 | } | |
1948 | ||
38b051a1 TM |
1949 | int tls_parse_stoc_early_data(SSL_CONNECTION *s, PACKET *pkt, |
1950 | unsigned int context, | |
f63a17d6 | 1951 | X509 *x, size_t chainidx) |
38df5a45 | 1952 | { |
fe874d27 | 1953 | if (context == SSL_EXT_TLS1_3_NEW_SESSION_TICKET) { |
6594189f MC |
1954 | unsigned long max_early_data; |
1955 | ||
1956 | if (!PACKET_get_net_4(pkt, &max_early_data) | |
1957 | || PACKET_remaining(pkt) != 0) { | |
c48ffbcc | 1958 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_INVALID_MAX_EARLY_DATA); |
6594189f MC |
1959 | return 0; |
1960 | } | |
1961 | ||
1962 | s->session->ext.max_early_data = max_early_data; | |
1963 | ||
04c7fb53 MC |
1964 | if (SSL_IS_QUIC_HANDSHAKE(s) && max_early_data != 0xffffffff) { |
1965 | /* | |
1966 | * QUIC allows missing max_early_data, or a max_early_data value | |
1967 | * of 0xffffffff. Missing max_early_data is stored in the session | |
1968 | * as 0. This is indistinguishable in OpenSSL from a present | |
1969 | * max_early_data value that was 0. In order that later checks for | |
1970 | * invalid max_early_data correctly treat as an error the case where | |
1971 | * max_early_data is present and it is 0, we store any invalid | |
1972 | * value in the same (non-zero) way. Otherwise we would have to | |
1973 | * introduce a new flag just for this. | |
1974 | */ | |
1975 | s->session->ext.max_early_data = 1; | |
1976 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_INVALID_MAX_EARLY_DATA); | |
1977 | return 0; | |
1978 | } | |
1979 | ||
6594189f MC |
1980 | return 1; |
1981 | } | |
1982 | ||
38df5a45 | 1983 | if (PACKET_remaining(pkt) != 0) { |
c48ffbcc | 1984 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); |
38df5a45 MC |
1985 | return 0; |
1986 | } | |
1987 | ||
4be3a7c7 | 1988 | if (!s->ext.early_data_ok |
c96ce52c | 1989 | || !s->hit) { |
38df5a45 MC |
1990 | /* |
1991 | * If we get here then we didn't send early data, or we didn't resume | |
4be3a7c7 MC |
1992 | * using the first identity, or the SNI/ALPN is not consistent so the |
1993 | * server should not be accepting it. | |
38df5a45 | 1994 | */ |
c48ffbcc | 1995 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_BAD_EXTENSION); |
38df5a45 MC |
1996 | return 0; |
1997 | } | |
1998 | ||
1999 | s->ext.early_data = SSL_EARLY_DATA_ACCEPTED; | |
2000 | ||
2001 | return 1; | |
2002 | } | |
2003 | ||
38b051a1 TM |
2004 | int tls_parse_stoc_psk(SSL_CONNECTION *s, PACKET *pkt, |
2005 | unsigned int context, X509 *x, | |
f63a17d6 | 2006 | size_t chainidx) |
4ff65f77 MC |
2007 | { |
2008 | #ifndef OPENSSL_NO_TLS1_3 | |
2009 | unsigned int identity; | |
2010 | ||
2011 | if (!PACKET_get_net_2(pkt, &identity) || PACKET_remaining(pkt) != 0) { | |
c48ffbcc | 2012 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_LENGTH_MISMATCH); |
4ff65f77 MC |
2013 | return 0; |
2014 | } | |
2015 | ||
c96ce52c | 2016 | if (identity >= (unsigned int)s->ext.tick_identity) { |
c48ffbcc | 2017 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_BAD_PSK_IDENTITY); |
c96ce52c MC |
2018 | return 0; |
2019 | } | |
2020 | ||
2021 | /* | |
2022 | * Session resumption tickets are always sent before PSK tickets. If the | |
2023 | * ticket index is 0 then it must be for a session resumption ticket if we | |
2024 | * sent two tickets, or if we didn't send a PSK ticket. | |
2025 | */ | |
2026 | if (identity == 0 && (s->psksession == NULL || s->ext.tick_identity == 2)) { | |
9368f865 MC |
2027 | s->hit = 1; |
2028 | SSL_SESSION_free(s->psksession); | |
2029 | s->psksession = NULL; | |
2030 | return 1; | |
2031 | } | |
2032 | ||
c96ce52c MC |
2033 | if (s->psksession == NULL) { |
2034 | /* Should never happen */ | |
c48ffbcc | 2035 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
4ff65f77 MC |
2036 | return 0; |
2037 | } | |
2038 | ||
add8d0e9 MC |
2039 | /* |
2040 | * If we used the external PSK for sending early_data then s->early_secret | |
2041 | * is already set up, so don't overwrite it. Otherwise we copy the | |
2042 | * early_secret across that we generated earlier. | |
2043 | */ | |
2044 | if ((s->early_data_state != SSL_EARLY_DATA_WRITE_RETRY | |
2045 | && s->early_data_state != SSL_EARLY_DATA_FINISHED_WRITING) | |
2046 | || s->session->ext.max_early_data > 0 | |
2047 | || s->psksession->ext.max_early_data == 0) | |
2048 | memcpy(s->early_secret, s->psksession->early_secret, EVP_MAX_MD_SIZE); | |
2049 | ||
9368f865 MC |
2050 | SSL_SESSION_free(s->session); |
2051 | s->session = s->psksession; | |
2052 | s->psksession = NULL; | |
4ff65f77 | 2053 | s->hit = 1; |
c96ce52c MC |
2054 | /* Early data is only allowed if we used the first ticket */ |
2055 | if (identity != 0) | |
2056 | s->ext.early_data_ok = 0; | |
4ff65f77 MC |
2057 | #endif |
2058 | ||
2059 | return 1; | |
2060 | } | |
3c95ef22 TS |
2061 | |
2062 | EXT_RETURN tls_construct_ctos_client_cert_type(SSL_CONNECTION *sc, WPACKET *pkt, | |
2063 | unsigned int context, | |
2064 | X509 *x, size_t chainidx) | |
2065 | { | |
2066 | sc->ext.client_cert_type_ctos = OSSL_CERT_TYPE_CTOS_NONE; | |
2067 | if (sc->client_cert_type == NULL) | |
2068 | return EXT_RETURN_NOT_SENT; | |
2069 | ||
2070 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_client_cert_type) | |
2071 | || !WPACKET_start_sub_packet_u16(pkt) | |
2072 | || !WPACKET_sub_memcpy_u8(pkt, sc->client_cert_type, sc->client_cert_type_len) | |
2073 | || !WPACKET_close(pkt)) { | |
2074 | SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); | |
2075 | return EXT_RETURN_FAIL; | |
2076 | } | |
2077 | sc->ext.client_cert_type_ctos = OSSL_CERT_TYPE_CTOS_GOOD; | |
2078 | return EXT_RETURN_SENT; | |
2079 | } | |
2080 | ||
2081 | int tls_parse_stoc_client_cert_type(SSL_CONNECTION *sc, PACKET *pkt, | |
2082 | unsigned int context, | |
2083 | X509 *x, size_t chainidx) | |
2084 | { | |
2085 | unsigned int type; | |
2086 | ||
2087 | if (PACKET_remaining(pkt) != 1) { | |
2088 | SSLfatal(sc, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); | |
2089 | return 0; | |
2090 | } | |
2091 | if (!PACKET_get_1(pkt, &type)) { | |
2092 | SSLfatal(sc, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); | |
2093 | return 0; | |
2094 | } | |
2095 | /* We did not send/ask for this */ | |
2096 | if (!ossl_assert(sc->ext.client_cert_type_ctos == OSSL_CERT_TYPE_CTOS_GOOD)) { | |
2097 | SSLfatal(sc, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); | |
2098 | return 0; | |
2099 | } | |
2100 | /* We don't have this enabled */ | |
2101 | if (sc->client_cert_type == NULL) { | |
2102 | SSLfatal(sc, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); | |
2103 | return 0; | |
2104 | } | |
2105 | /* Given back a value we didn't configure */ | |
2106 | if (memchr(sc->client_cert_type, type, sc->client_cert_type_len) == NULL) { | |
2107 | SSLfatal(sc, SSL_AD_DECODE_ERROR, SSL_R_BAD_VALUE); | |
2108 | return 0; | |
2109 | } | |
2110 | sc->ext.client_cert_type = type; | |
2111 | return 1; | |
2112 | } | |
2113 | ||
2114 | EXT_RETURN tls_construct_ctos_server_cert_type(SSL_CONNECTION *sc, WPACKET *pkt, | |
2115 | unsigned int context, | |
2116 | X509 *x, size_t chainidx) | |
2117 | { | |
2118 | sc->ext.server_cert_type_ctos = OSSL_CERT_TYPE_CTOS_NONE; | |
2119 | if (sc->server_cert_type == NULL) | |
2120 | return EXT_RETURN_NOT_SENT; | |
2121 | ||
2122 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_server_cert_type) | |
2123 | || !WPACKET_start_sub_packet_u16(pkt) | |
2124 | || !WPACKET_sub_memcpy_u8(pkt, sc->server_cert_type, sc->server_cert_type_len) | |
2125 | || !WPACKET_close(pkt)) { | |
2126 | SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); | |
2127 | return EXT_RETURN_FAIL; | |
2128 | } | |
2129 | sc->ext.server_cert_type_ctos = OSSL_CERT_TYPE_CTOS_GOOD; | |
2130 | return EXT_RETURN_SENT; | |
2131 | } | |
2132 | ||
2133 | int tls_parse_stoc_server_cert_type(SSL_CONNECTION *sc, PACKET *pkt, | |
2134 | unsigned int context, | |
2135 | X509 *x, size_t chainidx) | |
2136 | { | |
2137 | unsigned int type; | |
2138 | ||
2139 | if (PACKET_remaining(pkt) != 1) { | |
2140 | SSLfatal(sc, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); | |
2141 | return 0; | |
2142 | } | |
2143 | if (!PACKET_get_1(pkt, &type)) { | |
2144 | SSLfatal(sc, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); | |
2145 | return 0; | |
2146 | } | |
2147 | /* We did not send/ask for this */ | |
2148 | if (!ossl_assert(sc->ext.server_cert_type_ctos == OSSL_CERT_TYPE_CTOS_GOOD)) { | |
2149 | SSLfatal(sc, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); | |
2150 | return 0; | |
2151 | } | |
2152 | /* We don't have this enabled */ | |
2153 | if (sc->server_cert_type == NULL) { | |
2154 | SSLfatal(sc, SSL_AD_DECODE_ERROR, SSL_R_BAD_EXTENSION); | |
2155 | return 0; | |
2156 | } | |
2157 | /* Given back a value we didn't configure */ | |
2158 | if (memchr(sc->server_cert_type, type, sc->server_cert_type_len) == NULL) { | |
2159 | SSLfatal(sc, SSL_AD_DECODE_ERROR, SSL_R_BAD_VALUE); | |
2160 | return 0; | |
2161 | } | |
2162 | sc->ext.server_cert_type = type; | |
2163 | return 1; | |
2164 | } |