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6dd083fd | 1 | /* |
33388b44 | 2 | * Copyright 2016-2020 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 | |
852c2ed2 RS |
15 | DEFINE_STACK_OF(SRTP_PROTECTION_PROFILE) |
16 | DEFINE_STACK_OF_CONST(SSL_CIPHER) | |
17 | DEFINE_STACK_OF(OCSP_RESPID) | |
18 | ||
b186a592 MC |
19 | EXT_RETURN tls_construct_ctos_renegotiate(SSL *s, WPACKET *pkt, |
20 | unsigned int context, X509 *x, | |
f63a17d6 | 21 | size_t chainidx) |
ab83e314 MC |
22 | { |
23 | /* Add RI if renegotiating */ | |
24 | if (!s->renegotiate) | |
b186a592 | 25 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
26 | |
27 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_renegotiate) | |
28 | || !WPACKET_start_sub_packet_u16(pkt) | |
555cbb32 TS |
29 | || !WPACKET_sub_memcpy_u8(pkt, s->s3.previous_client_finished, |
30 | s->s3.previous_client_finished_len) | |
ab83e314 | 31 | || !WPACKET_close(pkt)) { |
f63a17d6 MC |
32 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_RENEGOTIATE, |
33 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 34 | return EXT_RETURN_FAIL; |
ab83e314 MC |
35 | } |
36 | ||
b186a592 | 37 | return EXT_RETURN_SENT; |
ab83e314 MC |
38 | } |
39 | ||
b186a592 MC |
40 | EXT_RETURN tls_construct_ctos_server_name(SSL *s, WPACKET *pkt, |
41 | unsigned int context, X509 *x, | |
f63a17d6 | 42 | size_t chainidx) |
ab83e314 | 43 | { |
aff8c126 | 44 | if (s->ext.hostname == NULL) |
b186a592 | 45 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
46 | |
47 | /* Add TLS extension servername to the Client Hello message */ | |
48 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_server_name) | |
49 | /* Sub-packet for server_name extension */ | |
50 | || !WPACKET_start_sub_packet_u16(pkt) | |
51 | /* Sub-packet for servername list (always 1 hostname)*/ | |
52 | || !WPACKET_start_sub_packet_u16(pkt) | |
53 | || !WPACKET_put_bytes_u8(pkt, TLSEXT_NAMETYPE_host_name) | |
aff8c126 RS |
54 | || !WPACKET_sub_memcpy_u16(pkt, s->ext.hostname, |
55 | strlen(s->ext.hostname)) | |
ab83e314 MC |
56 | || !WPACKET_close(pkt) |
57 | || !WPACKET_close(pkt)) { | |
f63a17d6 MC |
58 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_SERVER_NAME, |
59 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 60 | return EXT_RETURN_FAIL; |
ab83e314 MC |
61 | } |
62 | ||
b186a592 | 63 | return EXT_RETURN_SENT; |
ab83e314 MC |
64 | } |
65 | ||
cf72c757 F |
66 | /* Push a Max Fragment Len extension into ClientHello */ |
67 | EXT_RETURN tls_construct_ctos_maxfragmentlen(SSL *s, WPACKET *pkt, | |
68 | unsigned int context, X509 *x, | |
f63a17d6 | 69 | size_t chainidx) |
cf72c757 F |
70 | { |
71 | if (s->ext.max_fragment_len_mode == TLSEXT_max_fragment_length_DISABLED) | |
72 | return EXT_RETURN_NOT_SENT; | |
73 | ||
74 | /* Add Max Fragment Length extension if client enabled it. */ | |
75 | /*- | |
76 | * 4 bytes for this extension type and extension length | |
77 | * 1 byte for the Max Fragment Length code value. | |
78 | */ | |
79 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_max_fragment_length) | |
80 | /* Sub-packet for Max Fragment Length extension (1 byte) */ | |
81 | || !WPACKET_start_sub_packet_u16(pkt) | |
82 | || !WPACKET_put_bytes_u8(pkt, s->ext.max_fragment_len_mode) | |
83 | || !WPACKET_close(pkt)) { | |
f63a17d6 MC |
84 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
85 | SSL_F_TLS_CONSTRUCT_CTOS_MAXFRAGMENTLEN, ERR_R_INTERNAL_ERROR); | |
cf72c757 F |
86 | return EXT_RETURN_FAIL; |
87 | } | |
88 | ||
89 | return EXT_RETURN_SENT; | |
90 | } | |
91 | ||
ab83e314 | 92 | #ifndef OPENSSL_NO_SRP |
b186a592 | 93 | EXT_RETURN tls_construct_ctos_srp(SSL *s, WPACKET *pkt, unsigned int context, |
f63a17d6 | 94 | X509 *x, size_t chainidx) |
ab83e314 MC |
95 | { |
96 | /* Add SRP username if there is one */ | |
97 | if (s->srp_ctx.login == NULL) | |
b186a592 | 98 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
99 | |
100 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_srp) | |
101 | /* Sub-packet for SRP extension */ | |
102 | || !WPACKET_start_sub_packet_u16(pkt) | |
103 | || !WPACKET_start_sub_packet_u8(pkt) | |
104 | /* login must not be zero...internal error if so */ | |
105 | || !WPACKET_set_flags(pkt, WPACKET_FLAGS_NON_ZERO_LENGTH) | |
106 | || !WPACKET_memcpy(pkt, s->srp_ctx.login, | |
107 | strlen(s->srp_ctx.login)) | |
108 | || !WPACKET_close(pkt) | |
109 | || !WPACKET_close(pkt)) { | |
f63a17d6 MC |
110 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_SRP, |
111 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 112 | return EXT_RETURN_FAIL; |
ab83e314 MC |
113 | } |
114 | ||
b186a592 | 115 | return EXT_RETURN_SENT; |
ab83e314 MC |
116 | } |
117 | #endif | |
118 | ||
119 | #ifndef OPENSSL_NO_EC | |
9d2d857f | 120 | static int use_ecc(SSL *s, int min_version, int max_version) |
ab83e314 | 121 | { |
589b6227 | 122 | int i, end, ret = 0; |
ab83e314 MC |
123 | unsigned long alg_k, alg_a; |
124 | STACK_OF(SSL_CIPHER) *cipher_stack = NULL; | |
dbc6268f MC |
125 | const uint16_t *pgroups = NULL; |
126 | size_t num_groups, j; | |
ab83e314 MC |
127 | |
128 | /* See if we support any ECC ciphersuites */ | |
129 | if (s->version == SSL3_VERSION) | |
130 | return 0; | |
131 | ||
589b6227 | 132 | cipher_stack = SSL_get1_supported_ciphers(s); |
1266eefd MC |
133 | end = sk_SSL_CIPHER_num(cipher_stack); |
134 | for (i = 0; i < end; i++) { | |
ab83e314 MC |
135 | const SSL_CIPHER *c = sk_SSL_CIPHER_value(cipher_stack, i); |
136 | ||
137 | alg_k = c->algorithm_mkey; | |
138 | alg_a = c->algorithm_auth; | |
139 | if ((alg_k & (SSL_kECDHE | SSL_kECDHEPSK)) | |
1266eefd | 140 | || (alg_a & SSL_aECDSA) |
589b6227 MC |
141 | || c->min_tls >= TLS1_3_VERSION) { |
142 | ret = 1; | |
143 | break; | |
144 | } | |
ab83e314 | 145 | } |
589b6227 | 146 | sk_SSL_CIPHER_free(cipher_stack); |
dbc6268f MC |
147 | if (!ret) |
148 | return 0; | |
149 | ||
150 | /* Check we have at least one EC supported group */ | |
151 | tls1_get_supported_groups(s, &pgroups, &num_groups); | |
152 | for (j = 0; j < num_groups; j++) { | |
153 | uint16_t ctmp = pgroups[j]; | |
154 | ||
9d2d857f | 155 | if (tls_valid_group(s, ctmp, min_version, max_version) |
dbc6268f MC |
156 | && tls_group_allowed(s, ctmp, SSL_SECOP_CURVE_SUPPORTED)) |
157 | return 1; | |
158 | } | |
159 | ||
160 | return 0; | |
ab83e314 MC |
161 | } |
162 | ||
b186a592 MC |
163 | EXT_RETURN tls_construct_ctos_ec_pt_formats(SSL *s, WPACKET *pkt, |
164 | unsigned int context, X509 *x, | |
f63a17d6 | 165 | size_t chainidx) |
ab83e314 MC |
166 | { |
167 | const unsigned char *pformats; | |
168 | size_t num_formats; | |
dbc6268f | 169 | int reason, min_version, max_version; |
ab83e314 | 170 | |
dbc6268f MC |
171 | reason = ssl_get_min_max_version(s, &min_version, &max_version, NULL); |
172 | if (reason != 0) { | |
173 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
174 | SSL_F_TLS_CONSTRUCT_CTOS_EC_PT_FORMATS, reason); | |
175 | return EXT_RETURN_FAIL; | |
176 | } | |
9d2d857f | 177 | if (!use_ecc(s, min_version, max_version)) |
b186a592 | 178 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
179 | |
180 | /* Add TLS extension ECPointFormats to the ClientHello message */ | |
ab83e314 MC |
181 | tls1_get_formatlist(s, &pformats, &num_formats); |
182 | ||
183 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_ec_point_formats) | |
184 | /* Sub-packet for formats extension */ | |
185 | || !WPACKET_start_sub_packet_u16(pkt) | |
186 | || !WPACKET_sub_memcpy_u8(pkt, pformats, num_formats) | |
187 | || !WPACKET_close(pkt)) { | |
f63a17d6 MC |
188 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
189 | SSL_F_TLS_CONSTRUCT_CTOS_EC_PT_FORMATS, ERR_R_INTERNAL_ERROR); | |
b186a592 | 190 | return EXT_RETURN_FAIL; |
ab83e314 MC |
191 | } |
192 | ||
b186a592 | 193 | return EXT_RETURN_SENT; |
ab83e314 | 194 | } |
dbc6268f | 195 | #endif |
ab83e314 | 196 | |
dbc6268f | 197 | #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_EC) |
b186a592 MC |
198 | EXT_RETURN tls_construct_ctos_supported_groups(SSL *s, WPACKET *pkt, |
199 | unsigned int context, X509 *x, | |
f63a17d6 | 200 | size_t chainidx) |
ab83e314 | 201 | { |
f48d826e DSH |
202 | const uint16_t *pgroups = NULL; |
203 | size_t num_groups = 0, i; | |
9aaecbfc | 204 | int min_version, max_version, reason; |
ab83e314 | 205 | |
9aaecbfc | 206 | reason = ssl_get_min_max_version(s, &min_version, &max_version, NULL); |
207 | if (reason != 0) { | |
208 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
209 | SSL_F_TLS_CONSTRUCT_CTOS_SUPPORTED_GROUPS, reason); | |
210 | return EXT_RETURN_FAIL; | |
211 | } | |
212 | ||
dbc6268f MC |
213 | #if defined(OPENSSL_NO_EC) |
214 | if (max_version < TLS1_3_VERSION) | |
215 | return EXT_RETURN_NOT_SENT; | |
216 | #else | |
9d2d857f | 217 | if (!use_ecc(s, min_version, max_version) && max_version < TLS1_3_VERSION) |
dbc6268f MC |
218 | return EXT_RETURN_NOT_SENT; |
219 | #endif | |
220 | ||
ab83e314 MC |
221 | /* |
222 | * Add TLS extension supported_groups to the ClientHello message | |
223 | */ | |
f48d826e | 224 | tls1_get_supported_groups(s, &pgroups, &num_groups); |
ab83e314 MC |
225 | |
226 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_supported_groups) | |
227 | /* Sub-packet for supported_groups extension */ | |
228 | || !WPACKET_start_sub_packet_u16(pkt) | |
9aaecbfc | 229 | || !WPACKET_start_sub_packet_u16(pkt) |
230 | || !WPACKET_set_flags(pkt, WPACKET_FLAGS_NON_ZERO_LENGTH)) { | |
f63a17d6 MC |
231 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
232 | SSL_F_TLS_CONSTRUCT_CTOS_SUPPORTED_GROUPS, | |
233 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 234 | return EXT_RETURN_FAIL; |
ab83e314 | 235 | } |
9aaecbfc | 236 | /* Copy group ID if supported */ |
f48d826e DSH |
237 | for (i = 0; i < num_groups; i++) { |
238 | uint16_t ctmp = pgroups[i]; | |
9e84a42d | 239 | |
9d2d857f | 240 | if (tls_valid_group(s, ctmp, min_version, max_version) |
dbc6268f | 241 | && tls_group_allowed(s, ctmp, SSL_SECOP_CURVE_SUPPORTED)) { |
9e84a42d | 242 | if (!WPACKET_put_bytes_u16(pkt, ctmp)) { |
9aaecbfc | 243 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
244 | SSL_F_TLS_CONSTRUCT_CTOS_SUPPORTED_GROUPS, | |
245 | ERR_R_INTERNAL_ERROR); | |
246 | return EXT_RETURN_FAIL; | |
247 | } | |
ab83e314 MC |
248 | } |
249 | } | |
250 | if (!WPACKET_close(pkt) || !WPACKET_close(pkt)) { | |
635c8f77 MC |
251 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
252 | SSL_F_TLS_CONSTRUCT_CTOS_SUPPORTED_GROUPS, | |
253 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 254 | return EXT_RETURN_FAIL; |
ab83e314 MC |
255 | } |
256 | ||
b186a592 | 257 | return EXT_RETURN_SENT; |
ab83e314 MC |
258 | } |
259 | #endif | |
260 | ||
b186a592 MC |
261 | EXT_RETURN tls_construct_ctos_session_ticket(SSL *s, WPACKET *pkt, |
262 | unsigned int context, X509 *x, | |
f63a17d6 | 263 | size_t chainidx) |
ab83e314 MC |
264 | { |
265 | size_t ticklen; | |
266 | ||
267 | if (!tls_use_ticket(s)) | |
b186a592 | 268 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
269 | |
270 | if (!s->new_session && s->session != NULL | |
08191294 MC |
271 | && s->session->ext.tick != NULL |
272 | && s->session->ssl_version != TLS1_3_VERSION) { | |
aff8c126 RS |
273 | ticklen = s->session->ext.ticklen; |
274 | } else if (s->session && s->ext.session_ticket != NULL | |
275 | && s->ext.session_ticket->data != NULL) { | |
276 | ticklen = s->ext.session_ticket->length; | |
277 | s->session->ext.tick = OPENSSL_malloc(ticklen); | |
278 | if (s->session->ext.tick == NULL) { | |
f63a17d6 MC |
279 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
280 | SSL_F_TLS_CONSTRUCT_CTOS_SESSION_TICKET, | |
281 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 282 | return EXT_RETURN_FAIL; |
ab83e314 | 283 | } |
aff8c126 RS |
284 | memcpy(s->session->ext.tick, |
285 | s->ext.session_ticket->data, ticklen); | |
286 | s->session->ext.ticklen = ticklen; | |
ab83e314 MC |
287 | } else { |
288 | ticklen = 0; | |
289 | } | |
290 | ||
aff8c126 RS |
291 | if (ticklen == 0 && s->ext.session_ticket != NULL && |
292 | s->ext.session_ticket->data == NULL) | |
b186a592 | 293 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
294 | |
295 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_session_ticket) | |
aff8c126 | 296 | || !WPACKET_sub_memcpy_u16(pkt, s->session->ext.tick, ticklen)) { |
f63a17d6 MC |
297 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
298 | SSL_F_TLS_CONSTRUCT_CTOS_SESSION_TICKET, ERR_R_INTERNAL_ERROR); | |
b186a592 | 299 | return EXT_RETURN_FAIL; |
ab83e314 MC |
300 | } |
301 | ||
b186a592 | 302 | return EXT_RETURN_SENT; |
ab83e314 MC |
303 | } |
304 | ||
b186a592 MC |
305 | EXT_RETURN tls_construct_ctos_sig_algs(SSL *s, WPACKET *pkt, |
306 | unsigned int context, X509 *x, | |
f63a17d6 | 307 | size_t chainidx) |
ab83e314 MC |
308 | { |
309 | size_t salglen; | |
98c792d1 | 310 | const uint16_t *salg; |
ab83e314 MC |
311 | |
312 | if (!SSL_CLIENT_USE_SIGALGS(s)) | |
b186a592 | 313 | return EXT_RETURN_NOT_SENT; |
ab83e314 | 314 | |
a9669ddc | 315 | salglen = tls12_get_psigalgs(s, 1, &salg); |
ab83e314 MC |
316 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_signature_algorithms) |
317 | /* Sub-packet for sig-algs extension */ | |
318 | || !WPACKET_start_sub_packet_u16(pkt) | |
319 | /* Sub-packet for the actual list */ | |
320 | || !WPACKET_start_sub_packet_u16(pkt) | |
321 | || !tls12_copy_sigalgs(s, pkt, salg, salglen) | |
322 | || !WPACKET_close(pkt) | |
323 | || !WPACKET_close(pkt)) { | |
f63a17d6 MC |
324 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_SIG_ALGS, |
325 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 326 | return EXT_RETURN_FAIL; |
ab83e314 MC |
327 | } |
328 | ||
b186a592 | 329 | return EXT_RETURN_SENT; |
ab83e314 MC |
330 | } |
331 | ||
332 | #ifndef OPENSSL_NO_OCSP | |
b186a592 MC |
333 | EXT_RETURN tls_construct_ctos_status_request(SSL *s, WPACKET *pkt, |
334 | unsigned int context, X509 *x, | |
f63a17d6 | 335 | size_t chainidx) |
ab83e314 MC |
336 | { |
337 | int i; | |
338 | ||
e96e0f8e MC |
339 | /* This extension isn't defined for client Certificates */ |
340 | if (x != NULL) | |
b186a592 | 341 | return EXT_RETURN_NOT_SENT; |
e96e0f8e | 342 | |
aff8c126 | 343 | if (s->ext.status_type != TLSEXT_STATUSTYPE_ocsp) |
b186a592 | 344 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
345 | |
346 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_status_request) | |
347 | /* Sub-packet for status request extension */ | |
348 | || !WPACKET_start_sub_packet_u16(pkt) | |
349 | || !WPACKET_put_bytes_u8(pkt, TLSEXT_STATUSTYPE_ocsp) | |
350 | /* Sub-packet for the ids */ | |
351 | || !WPACKET_start_sub_packet_u16(pkt)) { | |
f63a17d6 MC |
352 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
353 | SSL_F_TLS_CONSTRUCT_CTOS_STATUS_REQUEST, ERR_R_INTERNAL_ERROR); | |
b186a592 | 354 | return EXT_RETURN_FAIL; |
ab83e314 | 355 | } |
aff8c126 | 356 | for (i = 0; i < sk_OCSP_RESPID_num(s->ext.ocsp.ids); i++) { |
ab83e314 | 357 | unsigned char *idbytes; |
aff8c126 | 358 | OCSP_RESPID *id = sk_OCSP_RESPID_value(s->ext.ocsp.ids, i); |
1266eefd | 359 | int idlen = i2d_OCSP_RESPID(id, NULL); |
ab83e314 | 360 | |
ab83e314 MC |
361 | if (idlen <= 0 |
362 | /* Sub-packet for an individual id */ | |
363 | || !WPACKET_sub_allocate_bytes_u16(pkt, idlen, &idbytes) | |
364 | || i2d_OCSP_RESPID(id, &idbytes) != idlen) { | |
f63a17d6 MC |
365 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
366 | SSL_F_TLS_CONSTRUCT_CTOS_STATUS_REQUEST, | |
367 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 368 | return EXT_RETURN_FAIL; |
ab83e314 MC |
369 | } |
370 | } | |
371 | if (!WPACKET_close(pkt) | |
372 | || !WPACKET_start_sub_packet_u16(pkt)) { | |
f63a17d6 MC |
373 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
374 | SSL_F_TLS_CONSTRUCT_CTOS_STATUS_REQUEST, ERR_R_INTERNAL_ERROR); | |
b186a592 | 375 | return EXT_RETURN_FAIL; |
ab83e314 | 376 | } |
aff8c126 | 377 | if (s->ext.ocsp.exts) { |
ab83e314 | 378 | unsigned char *extbytes; |
aff8c126 | 379 | int extlen = i2d_X509_EXTENSIONS(s->ext.ocsp.exts, NULL); |
ab83e314 MC |
380 | |
381 | if (extlen < 0) { | |
f63a17d6 MC |
382 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
383 | SSL_F_TLS_CONSTRUCT_CTOS_STATUS_REQUEST, | |
384 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 385 | return EXT_RETURN_FAIL; |
ab83e314 MC |
386 | } |
387 | if (!WPACKET_allocate_bytes(pkt, extlen, &extbytes) | |
aff8c126 | 388 | || i2d_X509_EXTENSIONS(s->ext.ocsp.exts, &extbytes) |
ab83e314 | 389 | != extlen) { |
f63a17d6 MC |
390 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
391 | SSL_F_TLS_CONSTRUCT_CTOS_STATUS_REQUEST, | |
392 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 393 | return EXT_RETURN_FAIL; |
ab83e314 MC |
394 | } |
395 | } | |
396 | if (!WPACKET_close(pkt) || !WPACKET_close(pkt)) { | |
f63a17d6 MC |
397 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
398 | SSL_F_TLS_CONSTRUCT_CTOS_STATUS_REQUEST, ERR_R_INTERNAL_ERROR); | |
b186a592 | 399 | return EXT_RETURN_FAIL; |
ab83e314 MC |
400 | } |
401 | ||
b186a592 | 402 | return EXT_RETURN_SENT; |
ab83e314 MC |
403 | } |
404 | #endif | |
405 | ||
406 | #ifndef OPENSSL_NO_NEXTPROTONEG | |
b186a592 | 407 | EXT_RETURN tls_construct_ctos_npn(SSL *s, WPACKET *pkt, unsigned int context, |
f63a17d6 | 408 | X509 *x, size_t chainidx) |
ab83e314 | 409 | { |
c7f47786 | 410 | if (s->ctx->ext.npn_select_cb == NULL || !SSL_IS_FIRST_HANDSHAKE(s)) |
b186a592 | 411 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
412 | |
413 | /* | |
414 | * The client advertises an empty extension to indicate its support | |
415 | * for Next Protocol Negotiation | |
416 | */ | |
417 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_next_proto_neg) | |
418 | || !WPACKET_put_bytes_u16(pkt, 0)) { | |
f63a17d6 MC |
419 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_NPN, |
420 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 421 | return EXT_RETURN_FAIL; |
ab83e314 MC |
422 | } |
423 | ||
b186a592 | 424 | return EXT_RETURN_SENT; |
ab83e314 MC |
425 | } |
426 | #endif | |
427 | ||
b186a592 | 428 | EXT_RETURN tls_construct_ctos_alpn(SSL *s, WPACKET *pkt, unsigned int context, |
f63a17d6 | 429 | X509 *x, size_t chainidx) |
ab83e314 | 430 | { |
555cbb32 | 431 | s->s3.alpn_sent = 0; |
ab83e314 | 432 | |
c7f47786 | 433 | if (s->ext.alpn == NULL || !SSL_IS_FIRST_HANDSHAKE(s)) |
b186a592 | 434 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
435 | |
436 | if (!WPACKET_put_bytes_u16(pkt, | |
437 | TLSEXT_TYPE_application_layer_protocol_negotiation) | |
438 | /* Sub-packet ALPN extension */ | |
439 | || !WPACKET_start_sub_packet_u16(pkt) | |
aff8c126 | 440 | || !WPACKET_sub_memcpy_u16(pkt, s->ext.alpn, s->ext.alpn_len) |
ab83e314 | 441 | || !WPACKET_close(pkt)) { |
f63a17d6 MC |
442 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_ALPN, |
443 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 444 | return EXT_RETURN_FAIL; |
ab83e314 | 445 | } |
555cbb32 | 446 | s->s3.alpn_sent = 1; |
ab83e314 | 447 | |
b186a592 | 448 | return EXT_RETURN_SENT; |
ab83e314 MC |
449 | } |
450 | ||
451 | ||
452 | #ifndef OPENSSL_NO_SRTP | |
b186a592 MC |
453 | EXT_RETURN tls_construct_ctos_use_srtp(SSL *s, WPACKET *pkt, |
454 | unsigned int context, X509 *x, | |
f63a17d6 | 455 | size_t chainidx) |
ab83e314 MC |
456 | { |
457 | STACK_OF(SRTP_PROTECTION_PROFILE) *clnt = SSL_get_srtp_profiles(s); | |
1266eefd | 458 | int i, end; |
ab83e314 MC |
459 | |
460 | if (clnt == NULL) | |
b186a592 | 461 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
462 | |
463 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_use_srtp) | |
464 | /* Sub-packet for SRTP extension */ | |
465 | || !WPACKET_start_sub_packet_u16(pkt) | |
466 | /* Sub-packet for the protection profile list */ | |
467 | || !WPACKET_start_sub_packet_u16(pkt)) { | |
f63a17d6 MC |
468 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_USE_SRTP, |
469 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 470 | return EXT_RETURN_FAIL; |
ab83e314 | 471 | } |
1266eefd MC |
472 | |
473 | end = sk_SRTP_PROTECTION_PROFILE_num(clnt); | |
474 | for (i = 0; i < end; i++) { | |
475 | const SRTP_PROTECTION_PROFILE *prof = | |
476 | sk_SRTP_PROTECTION_PROFILE_value(clnt, i); | |
477 | ||
ab83e314 | 478 | if (prof == NULL || !WPACKET_put_bytes_u16(pkt, prof->id)) { |
f63a17d6 MC |
479 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
480 | SSL_F_TLS_CONSTRUCT_CTOS_USE_SRTP, ERR_R_INTERNAL_ERROR); | |
b186a592 | 481 | return EXT_RETURN_FAIL; |
ab83e314 MC |
482 | } |
483 | } | |
484 | if (!WPACKET_close(pkt) | |
485 | /* Add an empty use_mki value */ | |
486 | || !WPACKET_put_bytes_u8(pkt, 0) | |
487 | || !WPACKET_close(pkt)) { | |
f63a17d6 MC |
488 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_USE_SRTP, |
489 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 490 | return EXT_RETURN_FAIL; |
ab83e314 MC |
491 | } |
492 | ||
b186a592 | 493 | return EXT_RETURN_SENT; |
ab83e314 MC |
494 | } |
495 | #endif | |
496 | ||
b186a592 | 497 | EXT_RETURN tls_construct_ctos_etm(SSL *s, WPACKET *pkt, unsigned int context, |
f63a17d6 | 498 | X509 *x, size_t chainidx) |
ab83e314 MC |
499 | { |
500 | if (s->options & SSL_OP_NO_ENCRYPT_THEN_MAC) | |
b186a592 | 501 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
502 | |
503 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_encrypt_then_mac) | |
504 | || !WPACKET_put_bytes_u16(pkt, 0)) { | |
f63a17d6 MC |
505 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_ETM, |
506 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 507 | return EXT_RETURN_FAIL; |
ab83e314 MC |
508 | } |
509 | ||
b186a592 | 510 | return EXT_RETURN_SENT; |
ab83e314 MC |
511 | } |
512 | ||
513 | #ifndef OPENSSL_NO_CT | |
b186a592 | 514 | EXT_RETURN tls_construct_ctos_sct(SSL *s, WPACKET *pkt, unsigned int context, |
f63a17d6 | 515 | X509 *x, size_t chainidx) |
ab83e314 MC |
516 | { |
517 | if (s->ct_validation_callback == NULL) | |
b186a592 | 518 | return EXT_RETURN_NOT_SENT; |
ab83e314 | 519 | |
e96e0f8e MC |
520 | /* Not defined for client Certificates */ |
521 | if (x != NULL) | |
b186a592 | 522 | return EXT_RETURN_NOT_SENT; |
e96e0f8e | 523 | |
ab83e314 MC |
524 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_signed_certificate_timestamp) |
525 | || !WPACKET_put_bytes_u16(pkt, 0)) { | |
f63a17d6 MC |
526 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_SCT, |
527 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 528 | return EXT_RETURN_FAIL; |
ab83e314 MC |
529 | } |
530 | ||
b186a592 | 531 | return EXT_RETURN_SENT; |
ab83e314 MC |
532 | } |
533 | #endif | |
534 | ||
b186a592 | 535 | EXT_RETURN tls_construct_ctos_ems(SSL *s, WPACKET *pkt, unsigned int context, |
f63a17d6 | 536 | X509 *x, size_t chainidx) |
ab83e314 | 537 | { |
088dfa13 TS |
538 | if (s->options & SSL_OP_NO_EXTENDED_MASTER_SECRET) |
539 | return EXT_RETURN_NOT_SENT; | |
540 | ||
ab83e314 MC |
541 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_extended_master_secret) |
542 | || !WPACKET_put_bytes_u16(pkt, 0)) { | |
f63a17d6 MC |
543 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_EMS, |
544 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 545 | return EXT_RETURN_FAIL; |
ab83e314 MC |
546 | } |
547 | ||
b186a592 | 548 | return EXT_RETURN_SENT; |
ab83e314 MC |
549 | } |
550 | ||
b186a592 MC |
551 | EXT_RETURN tls_construct_ctos_supported_versions(SSL *s, WPACKET *pkt, |
552 | unsigned int context, X509 *x, | |
f63a17d6 | 553 | size_t chainidx) |
ab83e314 MC |
554 | { |
555 | int currv, min_version, max_version, reason; | |
556 | ||
b5b993b2 | 557 | reason = ssl_get_min_max_version(s, &min_version, &max_version, NULL); |
88050dd1 MC |
558 | if (reason != 0) { |
559 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
560 | SSL_F_TLS_CONSTRUCT_CTOS_SUPPORTED_VERSIONS, reason); | |
561 | return EXT_RETURN_FAIL; | |
562 | } | |
563 | ||
564 | /* | |
565 | * Don't include this if we can't negotiate TLSv1.3. We can do a straight | |
566 | * comparison here because we will never be called in DTLS. | |
567 | */ | |
568 | if (max_version < TLS1_3_VERSION) | |
569 | return EXT_RETURN_NOT_SENT; | |
570 | ||
ab83e314 MC |
571 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_supported_versions) |
572 | || !WPACKET_start_sub_packet_u16(pkt) | |
573 | || !WPACKET_start_sub_packet_u8(pkt)) { | |
f63a17d6 MC |
574 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
575 | SSL_F_TLS_CONSTRUCT_CTOS_SUPPORTED_VERSIONS, | |
576 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 577 | return EXT_RETURN_FAIL; |
ab83e314 MC |
578 | } |
579 | ||
ab83e314 | 580 | for (currv = max_version; currv >= min_version; currv--) { |
35e742ec | 581 | if (!WPACKET_put_bytes_u16(pkt, currv)) { |
f63a17d6 MC |
582 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
583 | SSL_F_TLS_CONSTRUCT_CTOS_SUPPORTED_VERSIONS, | |
584 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 585 | return EXT_RETURN_FAIL; |
ab83e314 MC |
586 | } |
587 | } | |
588 | if (!WPACKET_close(pkt) || !WPACKET_close(pkt)) { | |
f63a17d6 MC |
589 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
590 | SSL_F_TLS_CONSTRUCT_CTOS_SUPPORTED_VERSIONS, | |
591 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 592 | return EXT_RETURN_FAIL; |
ab83e314 MC |
593 | } |
594 | ||
b186a592 | 595 | return EXT_RETURN_SENT; |
ab83e314 MC |
596 | } |
597 | ||
b2f7e8c0 | 598 | /* |
e3c0d76b | 599 | * Construct a psk_kex_modes extension. |
b2f7e8c0 | 600 | */ |
b186a592 MC |
601 | EXT_RETURN tls_construct_ctos_psk_kex_modes(SSL *s, WPACKET *pkt, |
602 | unsigned int context, X509 *x, | |
f63a17d6 | 603 | size_t chainidx) |
b2f7e8c0 MC |
604 | { |
605 | #ifndef OPENSSL_NO_TLS1_3 | |
e3c0d76b MC |
606 | int nodhe = s->options & SSL_OP_ALLOW_NO_DHE_KEX; |
607 | ||
b2f7e8c0 MC |
608 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_psk_kex_modes) |
609 | || !WPACKET_start_sub_packet_u16(pkt) | |
610 | || !WPACKET_start_sub_packet_u8(pkt) | |
611 | || !WPACKET_put_bytes_u8(pkt, TLSEXT_KEX_MODE_KE_DHE) | |
e3c0d76b | 612 | || (nodhe && !WPACKET_put_bytes_u8(pkt, TLSEXT_KEX_MODE_KE)) |
b2f7e8c0 MC |
613 | || !WPACKET_close(pkt) |
614 | || !WPACKET_close(pkt)) { | |
f63a17d6 MC |
615 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
616 | SSL_F_TLS_CONSTRUCT_CTOS_PSK_KEX_MODES, 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 MC |
628 | #ifndef OPENSSL_NO_TLS1_3 |
629 | static int add_key_share(SSL *s, WPACKET *pkt, unsigned int curve_id) | |
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)) { |
f63a17d6 MC |
637 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_ADD_KEY_SHARE, |
638 | ERR_R_INTERNAL_ERROR); | |
d8028b20 | 639 | return 0; |
7b1ec1cf MC |
640 | } |
641 | /* | |
642 | * Could happen if we got an HRR that wasn't requesting a new key_share | |
643 | */ | |
555cbb32 | 644 | key_share_key = s->s3.tmp.pkey; |
7b1ec1cf | 645 | } else { |
f63a17d6 | 646 | key_share_key = ssl_generate_pkey_group(s, curve_id); |
7b1ec1cf | 647 | if (key_share_key == NULL) { |
f63a17d6 | 648 | /* SSLfatal() already called */ |
d8028b20 | 649 | return 0; |
7b1ec1cf | 650 | } |
3847d426 MC |
651 | } |
652 | ||
653 | /* Encode the public key. */ | |
654 | encodedlen = EVP_PKEY_get1_tls_encodedpoint(key_share_key, | |
2248dbeb | 655 | &encoded_point); |
3847d426 | 656 | if (encodedlen == 0) { |
f63a17d6 | 657 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_ADD_KEY_SHARE, ERR_R_EC_LIB); |
7b1ec1cf | 658 | goto err; |
3847d426 MC |
659 | } |
660 | ||
661 | /* Create KeyShareEntry */ | |
662 | if (!WPACKET_put_bytes_u16(pkt, curve_id) | |
2248dbeb | 663 | || !WPACKET_sub_memcpy_u16(pkt, encoded_point, encodedlen)) { |
f63a17d6 MC |
664 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_ADD_KEY_SHARE, |
665 | ERR_R_INTERNAL_ERROR); | |
7b1ec1cf | 666 | goto err; |
3847d426 MC |
667 | } |
668 | ||
669 | /* | |
670 | * TODO(TLS1.3): When changing to send more than one key_share we're | |
671 | * going to need to be able to save more than one EVP_PKEY. For now | |
672 | * we reuse the existing tmp.pkey | |
673 | */ | |
555cbb32 TS |
674 | s->s3.tmp.pkey = key_share_key; |
675 | s->s3.group_id = curve_id; | |
2248dbeb | 676 | OPENSSL_free(encoded_point); |
3847d426 | 677 | |
d8028b20 | 678 | return 1; |
7b1ec1cf | 679 | err: |
555cbb32 | 680 | if (s->s3.tmp.pkey == NULL) |
7b1ec1cf MC |
681 | EVP_PKEY_free(key_share_key); |
682 | OPENSSL_free(encoded_point); | |
d8028b20 | 683 | return 0; |
3847d426 MC |
684 | } |
685 | #endif | |
686 | ||
b186a592 MC |
687 | EXT_RETURN tls_construct_ctos_key_share(SSL *s, WPACKET *pkt, |
688 | unsigned int context, X509 *x, | |
f63a17d6 | 689 | size_t chainidx) |
ab83e314 | 690 | { |
3cf96e88 | 691 | #ifndef OPENSSL_NO_TLS1_3 |
f48d826e DSH |
692 | size_t i, num_groups = 0; |
693 | const uint16_t *pgroups = NULL; | |
9e84a42d | 694 | uint16_t curve_id = 0; |
ab83e314 MC |
695 | |
696 | /* key_share extension */ | |
697 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_key_share) | |
698 | /* Extension data sub-packet */ | |
699 | || !WPACKET_start_sub_packet_u16(pkt) | |
700 | /* KeyShare list sub-packet */ | |
701 | || !WPACKET_start_sub_packet_u16(pkt)) { | |
f63a17d6 MC |
702 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_KEY_SHARE, |
703 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 704 | return EXT_RETURN_FAIL; |
ab83e314 MC |
705 | } |
706 | ||
f48d826e | 707 | tls1_get_supported_groups(s, &pgroups, &num_groups); |
ab83e314 MC |
708 | |
709 | /* | |
710 | * TODO(TLS1.3): Make the number of key_shares sent configurable. For | |
711 | * now, just send one | |
712 | */ | |
555cbb32 TS |
713 | if (s->s3.group_id != 0) { |
714 | curve_id = s->s3.group_id; | |
3847d426 | 715 | } else { |
f48d826e | 716 | for (i = 0; i < num_groups; i++) { |
ab83e314 | 717 | |
dbc6268f | 718 | if (!tls_group_allowed(s, pgroups[i], SSL_SECOP_CURVE_SUPPORTED)) |
3847d426 | 719 | continue; |
ab83e314 | 720 | |
f48d826e | 721 | curve_id = pgroups[i]; |
3847d426 | 722 | break; |
ab83e314 | 723 | } |
3847d426 | 724 | } |
ab83e314 | 725 | |
3847d426 | 726 | if (curve_id == 0) { |
f63a17d6 MC |
727 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_KEY_SHARE, |
728 | SSL_R_NO_SUITABLE_KEY_SHARE); | |
b186a592 | 729 | return EXT_RETURN_FAIL; |
ab83e314 MC |
730 | } |
731 | ||
f63a17d6 MC |
732 | if (!add_key_share(s, pkt, curve_id)) { |
733 | /* SSLfatal() already called */ | |
b186a592 | 734 | return EXT_RETURN_FAIL; |
f63a17d6 | 735 | } |
3847d426 | 736 | |
ab83e314 | 737 | if (!WPACKET_close(pkt) || !WPACKET_close(pkt)) { |
f63a17d6 MC |
738 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_KEY_SHARE, |
739 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 740 | return EXT_RETURN_FAIL; |
ab83e314 | 741 | } |
b186a592 | 742 | return EXT_RETURN_SENT; |
aa2ed504 TS |
743 | #else |
744 | return EXT_RETURN_NOT_SENT; | |
745 | #endif | |
ab83e314 MC |
746 | } |
747 | ||
b186a592 | 748 | EXT_RETURN tls_construct_ctos_cookie(SSL *s, WPACKET *pkt, unsigned int context, |
f63a17d6 | 749 | X509 *x, size_t chainidx) |
cfef5027 | 750 | { |
b186a592 | 751 | EXT_RETURN ret = EXT_RETURN_FAIL; |
cfef5027 MC |
752 | |
753 | /* Should only be set if we've had an HRR */ | |
754 | if (s->ext.tls13_cookie_len == 0) | |
b186a592 | 755 | return EXT_RETURN_NOT_SENT; |
cfef5027 MC |
756 | |
757 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_cookie) | |
758 | /* Extension data sub-packet */ | |
759 | || !WPACKET_start_sub_packet_u16(pkt) | |
760 | || !WPACKET_sub_memcpy_u16(pkt, s->ext.tls13_cookie, | |
761 | s->ext.tls13_cookie_len) | |
762 | || !WPACKET_close(pkt)) { | |
f63a17d6 MC |
763 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_COOKIE, |
764 | ERR_R_INTERNAL_ERROR); | |
cfef5027 MC |
765 | goto end; |
766 | } | |
767 | ||
b186a592 | 768 | ret = EXT_RETURN_SENT; |
cfef5027 MC |
769 | end: |
770 | OPENSSL_free(s->ext.tls13_cookie); | |
febb0afa | 771 | s->ext.tls13_cookie = NULL; |
cfef5027 MC |
772 | s->ext.tls13_cookie_len = 0; |
773 | ||
774 | return ret; | |
775 | } | |
776 | ||
b186a592 MC |
777 | EXT_RETURN tls_construct_ctos_early_data(SSL *s, WPACKET *pkt, |
778 | unsigned int context, X509 *x, | |
f63a17d6 | 779 | size_t chainidx) |
38df5a45 | 780 | { |
696de86f PW |
781 | #ifndef OPENSSL_NO_PSK |
782 | char identity[PSK_MAX_IDENTITY_LEN + 1]; | |
783 | #endif /* OPENSSL_NO_PSK */ | |
ccb76685 | 784 | const unsigned char *id = NULL; |
fff202e5 | 785 | size_t idlen = 0; |
add8d0e9 | 786 | SSL_SESSION *psksess = NULL; |
ffc5bbaa | 787 | SSL_SESSION *edsess = NULL; |
add8d0e9 MC |
788 | const EVP_MD *handmd = NULL; |
789 | ||
fc7129dc | 790 | if (s->hello_retry_request == SSL_HRR_PENDING) |
add8d0e9 MC |
791 | handmd = ssl_handshake_md(s); |
792 | ||
793 | if (s->psk_use_session_cb != NULL | |
ffc5bbaa MC |
794 | && (!s->psk_use_session_cb(s, handmd, &id, &idlen, &psksess) |
795 | || (psksess != NULL | |
796 | && psksess->ssl_version != TLS1_3_VERSION))) { | |
797 | SSL_SESSION_free(psksess); | |
f63a17d6 MC |
798 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_EARLY_DATA, |
799 | SSL_R_BAD_PSK); | |
add8d0e9 MC |
800 | return EXT_RETURN_FAIL; |
801 | } | |
802 | ||
c2b290c3 | 803 | #ifndef OPENSSL_NO_PSK |
f3d40db1 MC |
804 | if (psksess == NULL && s->psk_client_callback != NULL) { |
805 | unsigned char psk[PSK_MAX_PSK_LEN]; | |
806 | size_t psklen = 0; | |
807 | ||
808 | memset(identity, 0, sizeof(identity)); | |
809 | psklen = s->psk_client_callback(s, NULL, identity, sizeof(identity) - 1, | |
810 | psk, sizeof(psk)); | |
811 | ||
812 | if (psklen > PSK_MAX_PSK_LEN) { | |
813 | SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, | |
814 | SSL_F_TLS_CONSTRUCT_CTOS_EARLY_DATA, ERR_R_INTERNAL_ERROR); | |
815 | return EXT_RETURN_FAIL; | |
816 | } else if (psklen > 0) { | |
817 | const unsigned char tls13_aes128gcmsha256_id[] = { 0x13, 0x01 }; | |
818 | const SSL_CIPHER *cipher; | |
819 | ||
820 | idlen = strlen(identity); | |
821 | if (idlen > PSK_MAX_IDENTITY_LEN) { | |
822 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
823 | SSL_F_TLS_CONSTRUCT_CTOS_EARLY_DATA, | |
824 | ERR_R_INTERNAL_ERROR); | |
825 | return EXT_RETURN_FAIL; | |
826 | } | |
827 | id = (unsigned char *)identity; | |
828 | ||
829 | /* | |
830 | * We found a PSK using an old style callback. We don't know | |
831 | * the digest so we default to SHA256 as per the TLSv1.3 spec | |
832 | */ | |
833 | cipher = SSL_CIPHER_find(s, tls13_aes128gcmsha256_id); | |
834 | if (cipher == NULL) { | |
835 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
836 | SSL_F_TLS_CONSTRUCT_CTOS_EARLY_DATA, | |
837 | ERR_R_INTERNAL_ERROR); | |
838 | return EXT_RETURN_FAIL; | |
839 | } | |
840 | ||
841 | psksess = SSL_SESSION_new(); | |
842 | if (psksess == NULL | |
843 | || !SSL_SESSION_set1_master_key(psksess, psk, psklen) | |
844 | || !SSL_SESSION_set_cipher(psksess, cipher) | |
845 | || !SSL_SESSION_set_protocol_version(psksess, TLS1_3_VERSION)) { | |
846 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
847 | SSL_F_TLS_CONSTRUCT_CTOS_EARLY_DATA, | |
848 | ERR_R_INTERNAL_ERROR); | |
849 | OPENSSL_cleanse(psk, psklen); | |
850 | return EXT_RETURN_FAIL; | |
851 | } | |
852 | OPENSSL_cleanse(psk, psklen); | |
853 | } | |
854 | } | |
c2b290c3 | 855 | #endif /* OPENSSL_NO_PSK */ |
f3d40db1 | 856 | |
add8d0e9 MC |
857 | SSL_SESSION_free(s->psksession); |
858 | s->psksession = psksess; | |
859 | if (psksess != NULL) { | |
860 | OPENSSL_free(s->psksession_id); | |
861 | s->psksession_id = OPENSSL_memdup(id, idlen); | |
862 | if (s->psksession_id == NULL) { | |
f63a17d6 MC |
863 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
864 | SSL_F_TLS_CONSTRUCT_CTOS_EARLY_DATA, ERR_R_INTERNAL_ERROR); | |
add8d0e9 MC |
865 | return EXT_RETURN_FAIL; |
866 | } | |
867 | s->psksession_id_len = idlen; | |
868 | } | |
869 | ||
38df5a45 | 870 | if (s->early_data_state != SSL_EARLY_DATA_CONNECTING |
add8d0e9 MC |
871 | || (s->session->ext.max_early_data == 0 |
872 | && (psksess == NULL || psksess->ext.max_early_data == 0))) { | |
38df5a45 | 873 | s->max_early_data = 0; |
b186a592 | 874 | return EXT_RETURN_NOT_SENT; |
38df5a45 | 875 | } |
ffc5bbaa MC |
876 | edsess = s->session->ext.max_early_data != 0 ? s->session : psksess; |
877 | s->max_early_data = edsess->ext.max_early_data; | |
878 | ||
bfab12bb MC |
879 | if (edsess->ext.hostname != NULL) { |
880 | if (s->ext.hostname == NULL | |
881 | || (s->ext.hostname != NULL | |
882 | && strcmp(s->ext.hostname, edsess->ext.hostname) != 0)) { | |
f63a17d6 MC |
883 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
884 | SSL_F_TLS_CONSTRUCT_CTOS_EARLY_DATA, | |
885 | SSL_R_INCONSISTENT_EARLY_DATA_SNI); | |
bfab12bb MC |
886 | return EXT_RETURN_FAIL; |
887 | } | |
ffc5bbaa MC |
888 | } |
889 | ||
890 | if ((s->ext.alpn == NULL && edsess->ext.alpn_selected != NULL)) { | |
f63a17d6 MC |
891 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_EARLY_DATA, |
892 | SSL_R_INCONSISTENT_EARLY_DATA_ALPN); | |
ffc5bbaa MC |
893 | return EXT_RETURN_FAIL; |
894 | } | |
895 | ||
896 | /* | |
897 | * Verify that we are offering an ALPN protocol consistent with the early | |
898 | * data. | |
899 | */ | |
900 | if (edsess->ext.alpn_selected != NULL) { | |
901 | PACKET prots, alpnpkt; | |
902 | int found = 0; | |
903 | ||
904 | if (!PACKET_buf_init(&prots, s->ext.alpn, s->ext.alpn_len)) { | |
f63a17d6 MC |
905 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
906 | SSL_F_TLS_CONSTRUCT_CTOS_EARLY_DATA, ERR_R_INTERNAL_ERROR); | |
ffc5bbaa MC |
907 | return EXT_RETURN_FAIL; |
908 | } | |
909 | while (PACKET_get_length_prefixed_1(&prots, &alpnpkt)) { | |
910 | if (PACKET_equal(&alpnpkt, edsess->ext.alpn_selected, | |
911 | edsess->ext.alpn_selected_len)) { | |
912 | found = 1; | |
913 | break; | |
914 | } | |
915 | } | |
916 | if (!found) { | |
f63a17d6 MC |
917 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
918 | SSL_F_TLS_CONSTRUCT_CTOS_EARLY_DATA, | |
919 | SSL_R_INCONSISTENT_EARLY_DATA_ALPN); | |
ffc5bbaa MC |
920 | return EXT_RETURN_FAIL; |
921 | } | |
922 | } | |
38df5a45 MC |
923 | |
924 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_early_data) | |
925 | || !WPACKET_start_sub_packet_u16(pkt) | |
926 | || !WPACKET_close(pkt)) { | |
f63a17d6 MC |
927 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_EARLY_DATA, |
928 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 929 | return EXT_RETURN_FAIL; |
38df5a45 MC |
930 | } |
931 | ||
932 | /* | |
933 | * We set this to rejected here. Later, if the server acknowledges the | |
934 | * extension, we set it to accepted. | |
935 | */ | |
936 | s->ext.early_data = SSL_EARLY_DATA_REJECTED; | |
4be3a7c7 | 937 | s->ext.early_data_ok = 1; |
38df5a45 | 938 | |
b186a592 | 939 | return EXT_RETURN_SENT; |
38df5a45 MC |
940 | } |
941 | ||
1266eefd MC |
942 | #define F5_WORKAROUND_MIN_MSG_LEN 0xff |
943 | #define F5_WORKAROUND_MAX_MSG_LEN 0x200 | |
944 | ||
d702ad12 MC |
945 | /* |
946 | * PSK pre binder overhead = | |
947 | * 2 bytes for TLSEXT_TYPE_psk | |
948 | * 2 bytes for extension length | |
949 | * 2 bytes for identities list length | |
950 | * 2 bytes for identity length | |
951 | * 4 bytes for obfuscated_ticket_age | |
952 | * 2 bytes for binder list length | |
953 | * 1 byte for binder length | |
954 | * The above excludes the number of bytes for the identity itself and the | |
955 | * subsequent binder bytes | |
956 | */ | |
957 | #define PSK_PRE_BINDER_OVERHEAD (2 + 2 + 2 + 2 + 4 + 2 + 1) | |
958 | ||
b186a592 MC |
959 | EXT_RETURN tls_construct_ctos_padding(SSL *s, WPACKET *pkt, |
960 | unsigned int context, X509 *x, | |
f63a17d6 | 961 | size_t chainidx) |
ab83e314 MC |
962 | { |
963 | unsigned char *padbytes; | |
964 | size_t hlen; | |
965 | ||
966 | if ((s->options & SSL_OP_TLSEXT_PADDING) == 0) | |
b186a592 | 967 | return EXT_RETURN_NOT_SENT; |
ab83e314 MC |
968 | |
969 | /* | |
d702ad12 MC |
970 | * Add padding to workaround bugs in F5 terminators. See RFC7685. |
971 | * This code calculates the length of all extensions added so far but | |
972 | * excludes the PSK extension (because that MUST be written last). Therefore | |
973 | * this extension MUST always appear second to last. | |
ab83e314 MC |
974 | */ |
975 | if (!WPACKET_get_total_written(pkt, &hlen)) { | |
f63a17d6 MC |
976 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_PADDING, |
977 | ERR_R_INTERNAL_ERROR); | |
b186a592 | 978 | return EXT_RETURN_FAIL; |
ab83e314 MC |
979 | } |
980 | ||
d702ad12 MC |
981 | /* |
982 | * If we're going to send a PSK then that will be written out after this | |
983 | * extension, so we need to calculate how long it is going to be. | |
984 | */ | |
985 | if (s->session->ssl_version == TLS1_3_VERSION | |
986 | && s->session->ext.ticklen != 0 | |
987 | && s->session->cipher != NULL) { | |
c8f6c28a | 988 | const EVP_MD *md = ssl_md(s->ctx, s->session->cipher->algorithm2); |
d702ad12 MC |
989 | |
990 | if (md != NULL) { | |
991 | /* | |
992 | * Add the fixed PSK overhead, the identity length and the binder | |
993 | * length. | |
994 | */ | |
995 | hlen += PSK_PRE_BINDER_OVERHEAD + s->session->ext.ticklen | |
996 | + EVP_MD_size(md); | |
997 | } | |
998 | } | |
999 | ||
1266eefd | 1000 | if (hlen > F5_WORKAROUND_MIN_MSG_LEN && hlen < F5_WORKAROUND_MAX_MSG_LEN) { |
1ee4b98e | 1001 | /* Calculate the amount of padding we need to add */ |
1266eefd MC |
1002 | hlen = F5_WORKAROUND_MAX_MSG_LEN - hlen; |
1003 | ||
1004 | /* | |
1005 | * Take off the size of extension header itself (2 bytes for type and | |
10ed1b72 TS |
1006 | * 2 bytes for length bytes), but ensure that the extension is at least |
1007 | * 1 byte long so as not to have an empty extension last (WebSphere 7.x, | |
1008 | * 8.x are intolerant of that condition) | |
1266eefd | 1009 | */ |
3d85c7f4 | 1010 | if (hlen > 4) |
ab83e314 MC |
1011 | hlen -= 4; |
1012 | else | |
10ed1b72 | 1013 | hlen = 1; |
ab83e314 MC |
1014 | |
1015 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_padding) | |
1016 | || !WPACKET_sub_allocate_bytes_u16(pkt, hlen, &padbytes)) { | |
f63a17d6 MC |
1017 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_PADDING, |
1018 | ERR_R_INTERNAL_ERROR); | |
eb5fd03b | 1019 | return EXT_RETURN_FAIL; |
ab83e314 MC |
1020 | } |
1021 | memset(padbytes, 0, hlen); | |
1022 | } | |
1023 | ||
b186a592 | 1024 | return EXT_RETURN_SENT; |
ab83e314 MC |
1025 | } |
1026 | ||
ec15acb6 MC |
1027 | /* |
1028 | * Construct the pre_shared_key extension | |
1029 | */ | |
b186a592 | 1030 | EXT_RETURN tls_construct_ctos_psk(SSL *s, WPACKET *pkt, unsigned int context, |
f63a17d6 | 1031 | X509 *x, size_t chainidx) |
ec15acb6 MC |
1032 | { |
1033 | #ifndef OPENSSL_NO_TLS1_3 | |
15b1688a | 1034 | uint32_t now, agesec, agems = 0; |
add8d0e9 | 1035 | size_t reshashsize = 0, pskhashsize = 0, binderoffset, msglen; |
9368f865 | 1036 | unsigned char *resbinder = NULL, *pskbinder = NULL, *msgstart = NULL; |
15b1688a | 1037 | const EVP_MD *handmd = NULL, *mdres = NULL, *mdpsk = NULL; |
9368f865 | 1038 | int dores = 0; |
ec15acb6 | 1039 | |
c96ce52c | 1040 | s->ext.tick_identity = 0; |
ec15acb6 | 1041 | |
d702ad12 MC |
1042 | /* |
1043 | * Note: At this stage of the code we only support adding a single | |
1044 | * resumption PSK. If we add support for multiple PSKs then the length | |
1045 | * calculations in the padding extension will need to be adjusted. | |
1046 | */ | |
1047 | ||
ec15acb6 | 1048 | /* |
08191294 MC |
1049 | * If this is an incompatible or new session then we have nothing to resume |
1050 | * so don't add this extension. | |
ec15acb6 | 1051 | */ |
08191294 | 1052 | if (s->session->ssl_version != TLS1_3_VERSION |
add8d0e9 | 1053 | || (s->session->ext.ticklen == 0 && s->psksession == NULL)) |
b186a592 | 1054 | return EXT_RETURN_NOT_SENT; |
ec15acb6 | 1055 | |
fc7129dc | 1056 | if (s->hello_retry_request == SSL_HRR_PENDING) |
9368f865 MC |
1057 | handmd = ssl_handshake_md(s); |
1058 | ||
9368f865 | 1059 | if (s->session->ext.ticklen != 0) { |
72257204 | 1060 | /* Get the digest associated with the ciphersuite in the session */ |
9368f865 | 1061 | if (s->session->cipher == NULL) { |
f63a17d6 MC |
1062 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_PSK, |
1063 | ERR_R_INTERNAL_ERROR); | |
635c8f77 | 1064 | return EXT_RETURN_FAIL; |
9368f865 | 1065 | } |
c8f6c28a | 1066 | mdres = ssl_md(s->ctx, s->session->cipher->algorithm2); |
9368f865 | 1067 | if (mdres == NULL) { |
72257204 MC |
1068 | /* |
1069 | * Don't recognize this cipher so we can't use the session. | |
1070 | * Ignore it | |
1071 | */ | |
9368f865 MC |
1072 | goto dopsksess; |
1073 | } | |
1074 | ||
fc7129dc | 1075 | if (s->hello_retry_request == SSL_HRR_PENDING && mdres != handmd) { |
9368f865 | 1076 | /* |
72257204 MC |
1077 | * Selected ciphersuite hash does not match the hash for the session |
1078 | * so we can't use it. | |
9368f865 MC |
1079 | */ |
1080 | goto dopsksess; | |
1081 | } | |
1f5b44e9 | 1082 | |
cf3e221b | 1083 | /* |
9368f865 | 1084 | * Technically the C standard just says time() returns a time_t and says |
72257204 MC |
1085 | * nothing about the encoding of that type. In practice most |
1086 | * implementations follow POSIX which holds it as an integral type in | |
1087 | * seconds since epoch. We've already made the assumption that we can do | |
1088 | * this in multiple places in the code, so portability shouldn't be an | |
1089 | * issue. | |
cf3e221b | 1090 | */ |
9368f865 MC |
1091 | now = (uint32_t)time(NULL); |
1092 | agesec = now - (uint32_t)s->session->time; | |
7e70213f MC |
1093 | /* |
1094 | * We calculate the age in seconds but the server may work in ms. Due to | |
1095 | * rounding errors we could overestimate the age by up to 1s. It is | |
1096 | * better to underestimate it. Otherwise, if the RTT is very short, when | |
1097 | * the server calculates the age reported by the client it could be | |
1098 | * bigger than the age calculated on the server - which should never | |
1099 | * happen. | |
1100 | */ | |
1101 | if (agesec > 0) | |
1102 | agesec--; | |
cf3e221b | 1103 | |
9368f865 MC |
1104 | if (s->session->ext.tick_lifetime_hint < agesec) { |
1105 | /* Ticket is too old. Ignore it. */ | |
1106 | goto dopsksess; | |
1107 | } | |
ec15acb6 | 1108 | |
9368f865 MC |
1109 | /* |
1110 | * Calculate age in ms. We're just doing it to nearest second. Should be | |
1111 | * good enough. | |
1112 | */ | |
1113 | agems = agesec * (uint32_t)1000; | |
fc24f0bf | 1114 | |
9368f865 MC |
1115 | if (agesec != 0 && agems / (uint32_t)1000 != agesec) { |
1116 | /* | |
72257204 MC |
1117 | * Overflow. Shouldn't happen unless this is a *really* old session. |
1118 | * If so we just ignore it. | |
9368f865 MC |
1119 | */ |
1120 | goto dopsksess; | |
1121 | } | |
ec15acb6 | 1122 | |
ec15acb6 | 1123 | /* |
72257204 MC |
1124 | * Obfuscate the age. Overflow here is fine, this addition is supposed |
1125 | * to be mod 2^32. | |
ec15acb6 | 1126 | */ |
9368f865 MC |
1127 | agems += s->session->ext.tick_age_add; |
1128 | ||
1129 | reshashsize = EVP_MD_size(mdres); | |
c96ce52c | 1130 | s->ext.tick_identity++; |
9368f865 | 1131 | dores = 1; |
ec15acb6 MC |
1132 | } |
1133 | ||
9368f865 | 1134 | dopsksess: |
add8d0e9 | 1135 | if (!dores && s->psksession == NULL) |
9368f865 | 1136 | return EXT_RETURN_NOT_SENT; |
ec15acb6 | 1137 | |
add8d0e9 | 1138 | if (s->psksession != NULL) { |
c8f6c28a | 1139 | mdpsk = ssl_md(s->ctx, s->psksession->cipher->algorithm2); |
9368f865 MC |
1140 | if (mdpsk == NULL) { |
1141 | /* | |
1142 | * Don't recognize this cipher so we can't use the session. | |
1143 | * If this happens it's an application bug. | |
1144 | */ | |
f63a17d6 MC |
1145 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_PSK, |
1146 | SSL_R_BAD_PSK); | |
635c8f77 | 1147 | return EXT_RETURN_FAIL; |
9368f865 MC |
1148 | } |
1149 | ||
fc7129dc | 1150 | if (s->hello_retry_request == SSL_HRR_PENDING && mdpsk != handmd) { |
9368f865 MC |
1151 | /* |
1152 | * Selected ciphersuite hash does not match the hash for the PSK | |
1153 | * session. This is an application bug. | |
1154 | */ | |
f63a17d6 MC |
1155 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_PSK, |
1156 | SSL_R_BAD_PSK); | |
635c8f77 | 1157 | return EXT_RETURN_FAIL; |
9368f865 MC |
1158 | } |
1159 | ||
1160 | pskhashsize = EVP_MD_size(mdpsk); | |
1161 | } | |
ec15acb6 MC |
1162 | |
1163 | /* Create the extension, but skip over the binder for now */ | |
1164 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_psk) | |
1165 | || !WPACKET_start_sub_packet_u16(pkt) | |
9368f865 | 1166 | || !WPACKET_start_sub_packet_u16(pkt)) { |
f63a17d6 MC |
1167 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_PSK, |
1168 | ERR_R_INTERNAL_ERROR); | |
635c8f77 | 1169 | return EXT_RETURN_FAIL; |
9368f865 MC |
1170 | } |
1171 | ||
1172 | if (dores) { | |
1173 | if (!WPACKET_sub_memcpy_u16(pkt, s->session->ext.tick, | |
1174 | s->session->ext.ticklen) | |
1175 | || !WPACKET_put_bytes_u32(pkt, agems)) { | |
f63a17d6 MC |
1176 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_PSK, |
1177 | ERR_R_INTERNAL_ERROR); | |
635c8f77 | 1178 | return EXT_RETURN_FAIL; |
9368f865 MC |
1179 | } |
1180 | } | |
1181 | ||
add8d0e9 MC |
1182 | if (s->psksession != NULL) { |
1183 | if (!WPACKET_sub_memcpy_u16(pkt, s->psksession_id, | |
1184 | s->psksession_id_len) | |
9368f865 | 1185 | || !WPACKET_put_bytes_u32(pkt, 0)) { |
f63a17d6 MC |
1186 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_PSK, |
1187 | ERR_R_INTERNAL_ERROR); | |
635c8f77 | 1188 | return EXT_RETURN_FAIL; |
9368f865 | 1189 | } |
c96ce52c | 1190 | s->ext.tick_identity++; |
9368f865 MC |
1191 | } |
1192 | ||
1193 | if (!WPACKET_close(pkt) | |
ec15acb6 MC |
1194 | || !WPACKET_get_total_written(pkt, &binderoffset) |
1195 | || !WPACKET_start_sub_packet_u16(pkt) | |
9368f865 MC |
1196 | || (dores |
1197 | && !WPACKET_sub_allocate_bytes_u8(pkt, reshashsize, &resbinder)) | |
add8d0e9 | 1198 | || (s->psksession != NULL |
9368f865 | 1199 | && !WPACKET_sub_allocate_bytes_u8(pkt, pskhashsize, &pskbinder)) |
ec15acb6 MC |
1200 | || !WPACKET_close(pkt) |
1201 | || !WPACKET_close(pkt) | |
1202 | || !WPACKET_get_total_written(pkt, &msglen) | |
1203 | /* | |
1204 | * We need to fill in all the sub-packet lengths now so we can | |
1205 | * calculate the HMAC of the message up to the binders | |
1206 | */ | |
1207 | || !WPACKET_fill_lengths(pkt)) { | |
f63a17d6 MC |
1208 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CTOS_PSK, |
1209 | ERR_R_INTERNAL_ERROR); | |
635c8f77 | 1210 | return EXT_RETURN_FAIL; |
ec15acb6 MC |
1211 | } |
1212 | ||
1213 | msgstart = WPACKET_get_curr(pkt) - msglen; | |
1214 | ||
72257204 MC |
1215 | if (dores |
1216 | && tls_psk_do_binder(s, mdres, msgstart, binderoffset, NULL, | |
1217 | resbinder, s->session, 1, 0) != 1) { | |
635c8f77 MC |
1218 | /* SSLfatal() already called */ |
1219 | return EXT_RETURN_FAIL; | |
ec15acb6 MC |
1220 | } |
1221 | ||
add8d0e9 | 1222 | if (s->psksession != NULL |
72257204 | 1223 | && tls_psk_do_binder(s, mdpsk, msgstart, binderoffset, NULL, |
add8d0e9 | 1224 | pskbinder, s->psksession, 1, 1) != 1) { |
635c8f77 MC |
1225 | /* SSLfatal() already called */ |
1226 | return EXT_RETURN_FAIL; | |
9368f865 MC |
1227 | } |
1228 | ||
635c8f77 | 1229 | return EXT_RETURN_SENT; |
ec15acb6 | 1230 | #else |
89bc9cf6 | 1231 | return EXT_RETURN_NOT_SENT; |
ec15acb6 MC |
1232 | #endif |
1233 | } | |
1234 | ||
9d75dce3 TS |
1235 | EXT_RETURN tls_construct_ctos_post_handshake_auth(SSL *s, WPACKET *pkt, |
1236 | unsigned int context, | |
1237 | X509 *x, size_t chainidx) | |
1238 | { | |
1239 | #ifndef OPENSSL_NO_TLS1_3 | |
32097b33 MC |
1240 | if (!s->pha_enabled) |
1241 | return EXT_RETURN_NOT_SENT; | |
9d75dce3 TS |
1242 | |
1243 | /* construct extension - 0 length, no contents */ | |
1244 | if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_post_handshake_auth) | |
1245 | || !WPACKET_start_sub_packet_u16(pkt) | |
1246 | || !WPACKET_close(pkt)) { | |
1247 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
1248 | SSL_F_TLS_CONSTRUCT_CTOS_POST_HANDSHAKE_AUTH, | |
1249 | ERR_R_INTERNAL_ERROR); | |
1250 | return EXT_RETURN_FAIL; | |
1251 | } | |
1252 | ||
1253 | s->post_handshake_auth = SSL_PHA_EXT_SENT; | |
1254 | ||
1255 | return EXT_RETURN_SENT; | |
1256 | #else | |
1257 | return EXT_RETURN_NOT_SENT; | |
1258 | #endif | |
1259 | } | |
1260 | ||
1261 | ||
6dd083fd MC |
1262 | /* |
1263 | * Parse the server's renegotiation binding and abort if it's not right | |
1264 | */ | |
61138358 | 1265 | int tls_parse_stoc_renegotiate(SSL *s, PACKET *pkt, unsigned int context, |
f63a17d6 | 1266 | X509 *x, size_t chainidx) |
6dd083fd | 1267 | { |
555cbb32 TS |
1268 | size_t expected_len = s->s3.previous_client_finished_len |
1269 | + s->s3.previous_server_finished_len; | |
6dd083fd MC |
1270 | size_t ilen; |
1271 | const unsigned char *data; | |
1272 | ||
1273 | /* Check for logic errors */ | |
b77f3ed1 | 1274 | if (!ossl_assert(expected_len == 0 |
555cbb32 | 1275 | || s->s3.previous_client_finished_len != 0) |
b77f3ed1 | 1276 | || !ossl_assert(expected_len == 0 |
555cbb32 | 1277 | || s->s3.previous_server_finished_len != 0)) { |
f63a17d6 MC |
1278 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_STOC_RENEGOTIATE, |
1279 | ERR_R_INTERNAL_ERROR); | |
b77f3ed1 MC |
1280 | return 0; |
1281 | } | |
6dd083fd MC |
1282 | |
1283 | /* Parse the length byte */ | |
1284 | if (!PACKET_get_1_len(pkt, &ilen)) { | |
f63a17d6 MC |
1285 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_RENEGOTIATE, |
1286 | SSL_R_RENEGOTIATION_ENCODING_ERR); | |
6dd083fd MC |
1287 | return 0; |
1288 | } | |
1289 | ||
1290 | /* Consistency check */ | |
1291 | if (PACKET_remaining(pkt) != ilen) { | |
f63a17d6 MC |
1292 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_RENEGOTIATE, |
1293 | SSL_R_RENEGOTIATION_ENCODING_ERR); | |
6dd083fd MC |
1294 | return 0; |
1295 | } | |
1296 | ||
1297 | /* Check that the extension matches */ | |
1298 | if (ilen != expected_len) { | |
f63a17d6 MC |
1299 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PARSE_STOC_RENEGOTIATE, |
1300 | SSL_R_RENEGOTIATION_MISMATCH); | |
6dd083fd MC |
1301 | return 0; |
1302 | } | |
1303 | ||
555cbb32 TS |
1304 | if (!PACKET_get_bytes(pkt, &data, s->s3.previous_client_finished_len) |
1305 | || memcmp(data, s->s3.previous_client_finished, | |
1306 | s->s3.previous_client_finished_len) != 0) { | |
f63a17d6 MC |
1307 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PARSE_STOC_RENEGOTIATE, |
1308 | SSL_R_RENEGOTIATION_MISMATCH); | |
6dd083fd MC |
1309 | return 0; |
1310 | } | |
1311 | ||
555cbb32 TS |
1312 | if (!PACKET_get_bytes(pkt, &data, s->s3.previous_server_finished_len) |
1313 | || memcmp(data, s->s3.previous_server_finished, | |
1314 | s->s3.previous_server_finished_len) != 0) { | |
f63a17d6 MC |
1315 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PARSE_STOC_RENEGOTIATE, |
1316 | SSL_R_RENEGOTIATION_MISMATCH); | |
6dd083fd MC |
1317 | return 0; |
1318 | } | |
555cbb32 | 1319 | s->s3.send_connection_binding = 1; |
6dd083fd MC |
1320 | |
1321 | return 1; | |
1322 | } | |
1323 | ||
cf72c757 F |
1324 | /* Parse the server's max fragment len extension packet */ |
1325 | int tls_parse_stoc_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context, | |
f63a17d6 | 1326 | X509 *x, size_t chainidx) |
cf72c757 F |
1327 | { |
1328 | unsigned int value; | |
1329 | ||
1330 | if (PACKET_remaining(pkt) != 1 || !PACKET_get_1(pkt, &value)) { | |
56d36288 | 1331 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_MAXFRAGMENTLEN, |
f63a17d6 | 1332 | SSL_R_BAD_EXTENSION); |
cf72c757 F |
1333 | return 0; |
1334 | } | |
1335 | ||
1336 | /* |value| should contains a valid max-fragment-length code. */ | |
1337 | if (!IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value)) { | |
f63a17d6 MC |
1338 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, |
1339 | SSL_F_TLS_PARSE_STOC_MAXFRAGMENTLEN, | |
1340 | SSL_R_SSL3_EXT_INVALID_MAX_FRAGMENT_LENGTH); | |
cf72c757 F |
1341 | return 0; |
1342 | } | |
1343 | ||
1344 | /* Must be the same value as client-configured one who was sent to server */ | |
1345 | /*- | |
1346 | * RFC 6066: if a client receives a maximum fragment length negotiation | |
1347 | * response that differs from the length it requested, ... | |
1348 | * It must abort with SSL_AD_ILLEGAL_PARAMETER alert | |
1349 | */ | |
1350 | if (value != s->ext.max_fragment_len_mode) { | |
f63a17d6 MC |
1351 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, |
1352 | SSL_F_TLS_PARSE_STOC_MAXFRAGMENTLEN, | |
1353 | SSL_R_SSL3_EXT_INVALID_MAX_FRAGMENT_LENGTH); | |
cf72c757 F |
1354 | return 0; |
1355 | } | |
1356 | ||
1357 | /* | |
1358 | * Maximum Fragment Length Negotiation succeeded. | |
1359 | * The negotiated Maximum Fragment Length is binding now. | |
1360 | */ | |
1361 | s->session->ext.max_fragment_len_mode = value; | |
1362 | ||
1363 | return 1; | |
1364 | } | |
1365 | ||
61138358 | 1366 | int tls_parse_stoc_server_name(SSL *s, PACKET *pkt, unsigned int context, |
f63a17d6 | 1367 | X509 *x, size_t chainidx) |
6dd083fd | 1368 | { |
fb34a0f4 | 1369 | if (s->ext.hostname == NULL) { |
f63a17d6 MC |
1370 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_STOC_SERVER_NAME, |
1371 | ERR_R_INTERNAL_ERROR); | |
fb34a0f4 MC |
1372 | return 0; |
1373 | } | |
1374 | ||
1375 | if (PACKET_remaining(pkt) > 0) { | |
f63a17d6 MC |
1376 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_SERVER_NAME, |
1377 | SSL_R_BAD_EXTENSION); | |
6dd083fd MC |
1378 | return 0; |
1379 | } | |
1380 | ||
1381 | if (!s->hit) { | |
aff8c126 | 1382 | if (s->session->ext.hostname != NULL) { |
f63a17d6 MC |
1383 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_STOC_SERVER_NAME, |
1384 | ERR_R_INTERNAL_ERROR); | |
6dd083fd MC |
1385 | return 0; |
1386 | } | |
aff8c126 RS |
1387 | s->session->ext.hostname = OPENSSL_strdup(s->ext.hostname); |
1388 | if (s->session->ext.hostname == NULL) { | |
f63a17d6 MC |
1389 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_STOC_SERVER_NAME, |
1390 | ERR_R_INTERNAL_ERROR); | |
6dd083fd MC |
1391 | return 0; |
1392 | } | |
1393 | } | |
1394 | ||
1395 | return 1; | |
1396 | } | |
1397 | ||
1398 | #ifndef OPENSSL_NO_EC | |
61138358 | 1399 | int tls_parse_stoc_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context, |
f63a17d6 | 1400 | X509 *x, size_t chainidx) |
6dd083fd | 1401 | { |
848a950b | 1402 | size_t ecpointformats_len; |
6dd083fd MC |
1403 | PACKET ecptformatlist; |
1404 | ||
1405 | if (!PACKET_as_length_prefixed_1(pkt, &ecptformatlist)) { | |
f63a17d6 MC |
1406 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_EC_PT_FORMATS, |
1407 | SSL_R_BAD_EXTENSION); | |
6dd083fd MC |
1408 | return 0; |
1409 | } | |
1410 | if (!s->hit) { | |
aff8c126 | 1411 | ecpointformats_len = PACKET_remaining(&ecptformatlist); |
848a950b MC |
1412 | if (ecpointformats_len == 0) { |
1413 | SSLfatal(s, SSL_AD_DECODE_ERROR, | |
1414 | SSL_F_TLS_PARSE_STOC_EC_PT_FORMATS, SSL_R_BAD_LENGTH); | |
1415 | return 0; | |
1416 | } | |
6dd083fd | 1417 | |
cd0fb43c MC |
1418 | s->ext.peer_ecpointformats_len = 0; |
1419 | OPENSSL_free(s->ext.peer_ecpointformats); | |
1420 | s->ext.peer_ecpointformats = OPENSSL_malloc(ecpointformats_len); | |
1421 | if (s->ext.peer_ecpointformats == NULL) { | |
f63a17d6 MC |
1422 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
1423 | SSL_F_TLS_PARSE_STOC_EC_PT_FORMATS, ERR_R_INTERNAL_ERROR); | |
6dd083fd MC |
1424 | return 0; |
1425 | } | |
1426 | ||
cd0fb43c | 1427 | s->ext.peer_ecpointformats_len = ecpointformats_len; |
6dd083fd MC |
1428 | |
1429 | if (!PACKET_copy_bytes(&ecptformatlist, | |
cd0fb43c | 1430 | s->ext.peer_ecpointformats, |
aff8c126 | 1431 | ecpointformats_len)) { |
f63a17d6 MC |
1432 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
1433 | SSL_F_TLS_PARSE_STOC_EC_PT_FORMATS, ERR_R_INTERNAL_ERROR); | |
6dd083fd MC |
1434 | return 0; |
1435 | } | |
1436 | } | |
1437 | ||
1438 | return 1; | |
1439 | } | |
1440 | #endif | |
1441 | ||
61138358 | 1442 | int tls_parse_stoc_session_ticket(SSL *s, PACKET *pkt, unsigned int context, |
f63a17d6 | 1443 | X509 *x, size_t chainidx) |
6dd083fd | 1444 | { |
aff8c126 RS |
1445 | if (s->ext.session_ticket_cb != NULL && |
1446 | !s->ext.session_ticket_cb(s, PACKET_data(pkt), | |
1447 | PACKET_remaining(pkt), | |
1448 | s->ext.session_ticket_cb_arg)) { | |
f63a17d6 MC |
1449 | SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, |
1450 | SSL_F_TLS_PARSE_STOC_SESSION_TICKET, SSL_R_BAD_EXTENSION); | |
6dd083fd MC |
1451 | return 0; |
1452 | } | |
1266eefd | 1453 | |
fb34a0f4 | 1454 | if (!tls_use_ticket(s)) { |
f63a17d6 MC |
1455 | SSLfatal(s, SSL_AD_UNSUPPORTED_EXTENSION, |
1456 | SSL_F_TLS_PARSE_STOC_SESSION_TICKET, SSL_R_BAD_EXTENSION); | |
6dd083fd MC |
1457 | return 0; |
1458 | } | |
fb34a0f4 | 1459 | if (PACKET_remaining(pkt) > 0) { |
f63a17d6 MC |
1460 | SSLfatal(s, SSL_AD_DECODE_ERROR, |
1461 | SSL_F_TLS_PARSE_STOC_SESSION_TICKET, SSL_R_BAD_EXTENSION); | |
fb34a0f4 MC |
1462 | return 0; |
1463 | } | |
1266eefd | 1464 | |
aff8c126 | 1465 | s->ext.ticket_expected = 1; |
6dd083fd MC |
1466 | |
1467 | return 1; | |
1468 | } | |
1469 | ||
ab83e314 | 1470 | #ifndef OPENSSL_NO_OCSP |
61138358 | 1471 | int tls_parse_stoc_status_request(SSL *s, PACKET *pkt, unsigned int context, |
f63a17d6 | 1472 | X509 *x, size_t chainidx) |
6dd083fd | 1473 | { |
5de683d2 MC |
1474 | if (context == SSL_EXT_TLS1_3_CERTIFICATE_REQUEST) { |
1475 | /* We ignore this if the server sends a CertificateRequest */ | |
1476 | /* TODO(TLS1.3): Add support for this */ | |
1477 | return 1; | |
1478 | } | |
1479 | ||
6dd083fd | 1480 | /* |
f63e4288 MC |
1481 | * MUST only be sent if we've requested a status |
1482 | * request message. In TLS <= 1.2 it must also be empty. | |
6dd083fd | 1483 | */ |
fb34a0f4 | 1484 | if (s->ext.status_type != TLSEXT_STATUSTYPE_ocsp) { |
f63a17d6 MC |
1485 | SSLfatal(s, SSL_AD_UNSUPPORTED_EXTENSION, |
1486 | SSL_F_TLS_PARSE_STOC_STATUS_REQUEST, SSL_R_BAD_EXTENSION); | |
6dd083fd MC |
1487 | return 0; |
1488 | } | |
fb34a0f4 | 1489 | if (!SSL_IS_TLS13(s) && PACKET_remaining(pkt) > 0) { |
f63a17d6 MC |
1490 | SSLfatal(s, SSL_AD_DECODE_ERROR, |
1491 | SSL_F_TLS_PARSE_STOC_STATUS_REQUEST, SSL_R_BAD_EXTENSION); | |
fb34a0f4 MC |
1492 | return 0; |
1493 | } | |
f63e4288 MC |
1494 | |
1495 | if (SSL_IS_TLS13(s)) { | |
1496 | /* We only know how to handle this if it's for the first Certificate in | |
1ee4b98e | 1497 | * the chain. We ignore any other responses. |
f63e4288 | 1498 | */ |
8521ced6 | 1499 | if (chainidx != 0) |
f63e4288 | 1500 | return 1; |
f63a17d6 MC |
1501 | |
1502 | /* SSLfatal() already called */ | |
1503 | return tls_process_cert_status_body(s, pkt); | |
f63e4288 MC |
1504 | } |
1505 | ||
6dd083fd | 1506 | /* Set flag to expect CertificateStatus message */ |
aff8c126 | 1507 | s->ext.status_expected = 1; |
6dd083fd MC |
1508 | |
1509 | return 1; | |
1510 | } | |
ab83e314 | 1511 | #endif |
6dd083fd MC |
1512 | |
1513 | ||
1514 | #ifndef OPENSSL_NO_CT | |
61138358 | 1515 | int tls_parse_stoc_sct(SSL *s, PACKET *pkt, unsigned int context, X509 *x, |
f63a17d6 | 1516 | size_t chainidx) |
6dd083fd | 1517 | { |
5de683d2 MC |
1518 | if (context == SSL_EXT_TLS1_3_CERTIFICATE_REQUEST) { |
1519 | /* We ignore this if the server sends it in a CertificateRequest */ | |
1520 | /* TODO(TLS1.3): Add support for this */ | |
1521 | return 1; | |
1522 | } | |
1523 | ||
6dd083fd MC |
1524 | /* |
1525 | * Only take it if we asked for it - i.e if there is no CT validation | |
1526 | * callback set, then a custom extension MAY be processing it, so we | |
1527 | * need to let control continue to flow to that. | |
1528 | */ | |
1529 | if (s->ct_validation_callback != NULL) { | |
1530 | size_t size = PACKET_remaining(pkt); | |
1531 | ||
1532 | /* Simply copy it off for later processing */ | |
aff8c126 RS |
1533 | OPENSSL_free(s->ext.scts); |
1534 | s->ext.scts = NULL; | |
1266eefd | 1535 | |
3a63c0ed | 1536 | s->ext.scts_len = (uint16_t)size; |
6dd083fd | 1537 | if (size > 0) { |
aff8c126 RS |
1538 | s->ext.scts = OPENSSL_malloc(size); |
1539 | if (s->ext.scts == NULL | |
1540 | || !PACKET_copy_bytes(pkt, s->ext.scts, size)) { | |
f63a17d6 MC |
1541 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_STOC_SCT, |
1542 | ERR_R_INTERNAL_ERROR); | |
6dd083fd MC |
1543 | return 0; |
1544 | } | |
1545 | } | |
1546 | } else { | |
b186a592 MC |
1547 | ENDPOINT role = (context & SSL_EXT_TLS1_2_SERVER_HELLO) != 0 |
1548 | ? ENDPOINT_CLIENT : ENDPOINT_BOTH; | |
1549 | ||
1550 | /* | |
1551 | * If we didn't ask for it then there must be a custom extension, | |
1552 | * otherwise this is unsolicited. | |
1553 | */ | |
1554 | if (custom_ext_find(&s->cert->custext, role, | |
1555 | TLSEXT_TYPE_signed_certificate_timestamp, | |
1556 | NULL) == NULL) { | |
f63a17d6 MC |
1557 | SSLfatal(s, TLS1_AD_UNSUPPORTED_EXTENSION, SSL_F_TLS_PARSE_STOC_SCT, |
1558 | SSL_R_BAD_EXTENSION); | |
b186a592 MC |
1559 | return 0; |
1560 | } | |
1561 | ||
f63a17d6 | 1562 | if (!custom_ext_parse(s, context, |
43ae5eed MC |
1563 | TLSEXT_TYPE_signed_certificate_timestamp, |
1564 | PACKET_data(pkt), PACKET_remaining(pkt), | |
f63a17d6 MC |
1565 | x, chainidx)) { |
1566 | /* SSLfatal already called */ | |
6dd083fd | 1567 | return 0; |
f63a17d6 | 1568 | } |
6dd083fd MC |
1569 | } |
1570 | ||
1571 | return 1; | |
1572 | } | |
1573 | #endif | |
1574 | ||
1575 | ||
1576 | #ifndef OPENSSL_NO_NEXTPROTONEG | |
1577 | /* | |
1578 | * ssl_next_proto_validate validates a Next Protocol Negotiation block. No | |
1579 | * elements of zero length are allowed and the set of elements must exactly | |
1580 | * fill the length of the block. Returns 1 on success or 0 on failure. | |
1581 | */ | |
f63a17d6 | 1582 | static int ssl_next_proto_validate(SSL *s, PACKET *pkt) |
6dd083fd MC |
1583 | { |
1584 | PACKET tmp_protocol; | |
1585 | ||
1586 | while (PACKET_remaining(pkt)) { | |
1587 | if (!PACKET_get_length_prefixed_1(pkt, &tmp_protocol) | |
f63a17d6 MC |
1588 | || PACKET_remaining(&tmp_protocol) == 0) { |
1589 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_NEXT_PROTO_VALIDATE, | |
1590 | SSL_R_BAD_EXTENSION); | |
6dd083fd | 1591 | return 0; |
f63a17d6 | 1592 | } |
6dd083fd MC |
1593 | } |
1594 | ||
1595 | return 1; | |
1596 | } | |
1597 | ||
61138358 | 1598 | int tls_parse_stoc_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x, |
f63a17d6 | 1599 | size_t chainidx) |
6dd083fd MC |
1600 | { |
1601 | unsigned char *selected; | |
1602 | unsigned char selected_len; | |
1603 | PACKET tmppkt; | |
1604 | ||
1266eefd | 1605 | /* Check if we are in a renegotiation. If so ignore this extension */ |
c7f47786 | 1606 | if (!SSL_IS_FIRST_HANDSHAKE(s)) |
6dd083fd MC |
1607 | return 1; |
1608 | ||
1609 | /* We must have requested it. */ | |
aff8c126 | 1610 | if (s->ctx->ext.npn_select_cb == NULL) { |
f63a17d6 MC |
1611 | SSLfatal(s, SSL_AD_UNSUPPORTED_EXTENSION, SSL_F_TLS_PARSE_STOC_NPN, |
1612 | SSL_R_BAD_EXTENSION); | |
6dd083fd MC |
1613 | return 0; |
1614 | } | |
1266eefd | 1615 | |
6dd083fd MC |
1616 | /* The data must be valid */ |
1617 | tmppkt = *pkt; | |
f63a17d6 MC |
1618 | if (!ssl_next_proto_validate(s, &tmppkt)) { |
1619 | /* SSLfatal() already called */ | |
6dd083fd MC |
1620 | return 0; |
1621 | } | |
aff8c126 RS |
1622 | if (s->ctx->ext.npn_select_cb(s, &selected, &selected_len, |
1623 | PACKET_data(pkt), | |
1624 | PACKET_remaining(pkt), | |
1625 | s->ctx->ext.npn_select_cb_arg) != | |
6dd083fd | 1626 | SSL_TLSEXT_ERR_OK) { |
f63a17d6 MC |
1627 | SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_TLS_PARSE_STOC_NPN, |
1628 | SSL_R_BAD_EXTENSION); | |
6dd083fd MC |
1629 | return 0; |
1630 | } | |
1266eefd | 1631 | |
6dd083fd MC |
1632 | /* |
1633 | * Could be non-NULL if server has sent multiple NPN extensions in | |
1634 | * a single Serverhello | |
1635 | */ | |
aff8c126 RS |
1636 | OPENSSL_free(s->ext.npn); |
1637 | s->ext.npn = OPENSSL_malloc(selected_len); | |
1638 | if (s->ext.npn == NULL) { | |
f63a17d6 MC |
1639 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_STOC_NPN, |
1640 | ERR_R_INTERNAL_ERROR); | |
6dd083fd MC |
1641 | return 0; |
1642 | } | |
1643 | ||
aff8c126 RS |
1644 | memcpy(s->ext.npn, selected, selected_len); |
1645 | s->ext.npn_len = selected_len; | |
555cbb32 | 1646 | s->s3.npn_seen = 1; |
6dd083fd MC |
1647 | |
1648 | return 1; | |
1649 | } | |
1650 | #endif | |
1651 | ||
61138358 | 1652 | int tls_parse_stoc_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x, |
f63a17d6 | 1653 | size_t chainidx) |
6dd083fd MC |
1654 | { |
1655 | size_t len; | |
1656 | ||
1657 | /* We must have requested it. */ | |
555cbb32 | 1658 | if (!s->s3.alpn_sent) { |
f63a17d6 MC |
1659 | SSLfatal(s, SSL_AD_UNSUPPORTED_EXTENSION, SSL_F_TLS_PARSE_STOC_ALPN, |
1660 | SSL_R_BAD_EXTENSION); | |
6dd083fd MC |
1661 | return 0; |
1662 | } | |
1663 | /*- | |
1664 | * The extension data consists of: | |
1665 | * uint16 list_length | |
1666 | * uint8 proto_length; | |
1667 | * uint8 proto[proto_length]; | |
1668 | */ | |
1669 | if (!PACKET_get_net_2_len(pkt, &len) | |
1670 | || PACKET_remaining(pkt) != len || !PACKET_get_1_len(pkt, &len) | |
1671 | || PACKET_remaining(pkt) != len) { | |
f63a17d6 MC |
1672 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_ALPN, |
1673 | SSL_R_BAD_EXTENSION); | |
6dd083fd MC |
1674 | return 0; |
1675 | } | |
555cbb32 TS |
1676 | OPENSSL_free(s->s3.alpn_selected); |
1677 | s->s3.alpn_selected = OPENSSL_malloc(len); | |
1678 | if (s->s3.alpn_selected == NULL) { | |
f63a17d6 MC |
1679 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_STOC_ALPN, |
1680 | ERR_R_INTERNAL_ERROR); | |
6dd083fd MC |
1681 | return 0; |
1682 | } | |
555cbb32 | 1683 | if (!PACKET_copy_bytes(pkt, s->s3.alpn_selected, len)) { |
f63a17d6 MC |
1684 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_ALPN, |
1685 | SSL_R_BAD_EXTENSION); | |
6dd083fd MC |
1686 | return 0; |
1687 | } | |
555cbb32 | 1688 | s->s3.alpn_selected_len = len; |
6dd083fd | 1689 | |
0ef28021 MC |
1690 | if (s->session->ext.alpn_selected == NULL |
1691 | || s->session->ext.alpn_selected_len != len | |
555cbb32 | 1692 | || memcmp(s->session->ext.alpn_selected, s->s3.alpn_selected, len) |
0ef28021 | 1693 | != 0) { |
4be3a7c7 MC |
1694 | /* ALPN not consistent with the old session so cannot use early_data */ |
1695 | s->ext.early_data_ok = 0; | |
1696 | } | |
1697 | if (!s->hit) { | |
9d5db9c9 MC |
1698 | /* |
1699 | * This is a new session and so alpn_selected should have been | |
1700 | * initialised to NULL. We should update it with the selected ALPN. | |
1701 | */ | |
1702 | if (!ossl_assert(s->session->ext.alpn_selected == NULL)) { | |
1703 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_STOC_ALPN, | |
1704 | ERR_R_INTERNAL_ERROR); | |
1705 | return 0; | |
1706 | } | |
4be3a7c7 | 1707 | s->session->ext.alpn_selected = |
555cbb32 | 1708 | OPENSSL_memdup(s->s3.alpn_selected, s->s3.alpn_selected_len); |
4be3a7c7 | 1709 | if (s->session->ext.alpn_selected == NULL) { |
f63a17d6 MC |
1710 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_STOC_ALPN, |
1711 | ERR_R_INTERNAL_ERROR); | |
4be3a7c7 MC |
1712 | return 0; |
1713 | } | |
555cbb32 | 1714 | s->session->ext.alpn_selected_len = s->s3.alpn_selected_len; |
ae8d7d99 MC |
1715 | } |
1716 | ||
6dd083fd MC |
1717 | return 1; |
1718 | } | |
1719 | ||
1720 | #ifndef OPENSSL_NO_SRTP | |
61138358 | 1721 | int tls_parse_stoc_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x, |
f63a17d6 | 1722 | size_t chainidx) |
6dd083fd MC |
1723 | { |
1724 | unsigned int id, ct, mki; | |
1725 | int i; | |
1726 | STACK_OF(SRTP_PROTECTION_PROFILE) *clnt; | |
1727 | SRTP_PROTECTION_PROFILE *prof; | |
1728 | ||
1266eefd MC |
1729 | if (!PACKET_get_net_2(pkt, &ct) || ct != 2 |
1730 | || !PACKET_get_net_2(pkt, &id) | |
1731 | || !PACKET_get_1(pkt, &mki) | |
1732 | || PACKET_remaining(pkt) != 0) { | |
f63a17d6 MC |
1733 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_USE_SRTP, |
1734 | SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); | |
6dd083fd MC |
1735 | return 0; |
1736 | } | |
1737 | ||
1738 | if (mki != 0) { | |
1739 | /* Must be no MKI, since we never offer one */ | |
f63a17d6 MC |
1740 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PARSE_STOC_USE_SRTP, |
1741 | SSL_R_BAD_SRTP_MKI_VALUE); | |
6dd083fd MC |
1742 | return 0; |
1743 | } | |
1744 | ||
6dd083fd | 1745 | /* Throw an error if the server gave us an unsolicited extension */ |
1266eefd | 1746 | clnt = SSL_get_srtp_profiles(s); |
6dd083fd | 1747 | if (clnt == NULL) { |
f63a17d6 MC |
1748 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_USE_SRTP, |
1749 | SSL_R_NO_SRTP_PROFILES); | |
6dd083fd MC |
1750 | return 0; |
1751 | } | |
1752 | ||
1753 | /* | |
1754 | * Check to see if the server gave us something we support (and | |
1755 | * presumably offered) | |
1756 | */ | |
1757 | for (i = 0; i < sk_SRTP_PROTECTION_PROFILE_num(clnt); i++) { | |
1758 | prof = sk_SRTP_PROTECTION_PROFILE_value(clnt, i); | |
1759 | ||
1760 | if (prof->id == id) { | |
1761 | s->srtp_profile = prof; | |
6dd083fd MC |
1762 | return 1; |
1763 | } | |
1764 | } | |
1765 | ||
f63a17d6 MC |
1766 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_USE_SRTP, |
1767 | SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); | |
6dd083fd MC |
1768 | return 0; |
1769 | } | |
1770 | #endif | |
1771 | ||
61138358 | 1772 | int tls_parse_stoc_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x, |
f63a17d6 | 1773 | size_t chainidx) |
6dd083fd MC |
1774 | { |
1775 | /* Ignore if inappropriate ciphersuite */ | |
1776 | if (!(s->options & SSL_OP_NO_ENCRYPT_THEN_MAC) | |
555cbb32 TS |
1777 | && s->s3.tmp.new_cipher->algorithm_mac != SSL_AEAD |
1778 | && s->s3.tmp.new_cipher->algorithm_enc != SSL_RC4) | |
28a31a0a | 1779 | s->ext.use_etm = 1; |
6dd083fd MC |
1780 | |
1781 | return 1; | |
1782 | } | |
1783 | ||
61138358 | 1784 | int tls_parse_stoc_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x, |
f63a17d6 | 1785 | size_t chainidx) |
6dd083fd | 1786 | { |
088dfa13 TS |
1787 | if (s->options & SSL_OP_NO_EXTENDED_MASTER_SECRET) |
1788 | return 1; | |
555cbb32 | 1789 | s->s3.flags |= TLS1_FLAGS_RECEIVED_EXTMS; |
6dd083fd MC |
1790 | if (!s->hit) |
1791 | s->session->flags |= SSL_SESS_FLAG_EXTMS; | |
1792 | ||
1793 | return 1; | |
1794 | } | |
1795 | ||
88050dd1 MC |
1796 | int tls_parse_stoc_supported_versions(SSL *s, PACKET *pkt, unsigned int context, |
1797 | X509 *x, size_t chainidx) | |
1798 | { | |
1799 | unsigned int version; | |
1800 | ||
1801 | if (!PACKET_get_net_2(pkt, &version) | |
1802 | || PACKET_remaining(pkt) != 0) { | |
1803 | SSLfatal(s, SSL_AD_DECODE_ERROR, | |
1804 | SSL_F_TLS_PARSE_STOC_SUPPORTED_VERSIONS, | |
1805 | SSL_R_LENGTH_MISMATCH); | |
1806 | return 0; | |
1807 | } | |
1808 | ||
27e462f1 MC |
1809 | /* |
1810 | * The only protocol version we support which is valid in this extension in | |
1811 | * a ServerHello is TLSv1.3 therefore we shouldn't be getting anything else. | |
1812 | */ | |
1813 | if (version != TLS1_3_VERSION) { | |
1814 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, | |
1815 | SSL_F_TLS_PARSE_STOC_SUPPORTED_VERSIONS, | |
1816 | SSL_R_BAD_PROTOCOL_VERSION_NUMBER); | |
1817 | return 0; | |
1818 | } | |
1819 | ||
426dfc9f | 1820 | /* We ignore this extension for HRRs except to sanity check it */ |
27e462f1 | 1821 | if (context == SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST) |
426dfc9f | 1822 | return 1; |
426dfc9f | 1823 | |
88050dd1 MC |
1824 | /* We just set it here. We validate it in ssl_choose_client_version */ |
1825 | s->version = version; | |
1826 | ||
1827 | return 1; | |
1828 | } | |
1829 | ||
61138358 | 1830 | int tls_parse_stoc_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x, |
f63a17d6 | 1831 | size_t chainidx) |
6dd083fd | 1832 | { |
3cf96e88 | 1833 | #ifndef OPENSSL_NO_TLS1_3 |
6dd083fd MC |
1834 | unsigned int group_id; |
1835 | PACKET encoded_pt; | |
555cbb32 | 1836 | EVP_PKEY *ckey = s->s3.tmp.pkey, *skey = NULL; |
6dd083fd MC |
1837 | |
1838 | /* Sanity check */ | |
555cbb32 | 1839 | if (ckey == NULL || s->s3.peer_tmp != NULL) { |
f63a17d6 MC |
1840 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_STOC_KEY_SHARE, |
1841 | ERR_R_INTERNAL_ERROR); | |
6dd083fd MC |
1842 | return 0; |
1843 | } | |
1844 | ||
1845 | if (!PACKET_get_net_2(pkt, &group_id)) { | |
f63a17d6 MC |
1846 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_KEY_SHARE, |
1847 | SSL_R_LENGTH_MISMATCH); | |
6dd083fd MC |
1848 | return 0; |
1849 | } | |
1850 | ||
fe874d27 | 1851 | if ((context & SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST) != 0) { |
f48d826e DSH |
1852 | const uint16_t *pgroups = NULL; |
1853 | size_t i, num_groups; | |
3847d426 MC |
1854 | |
1855 | if (PACKET_remaining(pkt) != 0) { | |
f63a17d6 MC |
1856 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_KEY_SHARE, |
1857 | SSL_R_LENGTH_MISMATCH); | |
3847d426 MC |
1858 | return 0; |
1859 | } | |
1860 | ||
1861 | /* | |
1862 | * It is an error if the HelloRetryRequest wants a key_share that we | |
1863 | * already sent in the first ClientHello | |
1864 | */ | |
555cbb32 | 1865 | if (group_id == s->s3.group_id) { |
f63a17d6 MC |
1866 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, |
1867 | SSL_F_TLS_PARSE_STOC_KEY_SHARE, SSL_R_BAD_KEY_SHARE); | |
3847d426 MC |
1868 | return 0; |
1869 | } | |
1870 | ||
1871 | /* Validate the selected group is one we support */ | |
f48d826e DSH |
1872 | tls1_get_supported_groups(s, &pgroups, &num_groups); |
1873 | for (i = 0; i < num_groups; i++) { | |
1874 | if (group_id == pgroups[i]) | |
3847d426 MC |
1875 | break; |
1876 | } | |
f48d826e | 1877 | if (i >= num_groups |
dbc6268f | 1878 | || !tls_group_allowed(s, group_id, SSL_SECOP_CURVE_SUPPORTED)) { |
f63a17d6 MC |
1879 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, |
1880 | SSL_F_TLS_PARSE_STOC_KEY_SHARE, SSL_R_BAD_KEY_SHARE); | |
3847d426 MC |
1881 | return 0; |
1882 | } | |
1883 | ||
555cbb32 TS |
1884 | s->s3.group_id = group_id; |
1885 | EVP_PKEY_free(s->s3.tmp.pkey); | |
1886 | s->s3.tmp.pkey = NULL; | |
3847d426 MC |
1887 | return 1; |
1888 | } | |
1889 | ||
555cbb32 | 1890 | if (group_id != s->s3.group_id) { |
6dd083fd MC |
1891 | /* |
1892 | * This isn't for the group that we sent in the original | |
1893 | * key_share! | |
1894 | */ | |
f63a17d6 MC |
1895 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PARSE_STOC_KEY_SHARE, |
1896 | SSL_R_BAD_KEY_SHARE); | |
6dd083fd MC |
1897 | return 0; |
1898 | } | |
1899 | ||
1900 | if (!PACKET_as_length_prefixed_2(pkt, &encoded_pt) | |
1901 | || PACKET_remaining(&encoded_pt) == 0) { | |
f63a17d6 MC |
1902 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_KEY_SHARE, |
1903 | SSL_R_LENGTH_MISMATCH); | |
6dd083fd MC |
1904 | return 0; |
1905 | } | |
1906 | ||
166c0b98 DB |
1907 | skey = EVP_PKEY_new(); |
1908 | if (skey == NULL || EVP_PKEY_copy_parameters(skey, ckey) <= 0) { | |
f63a17d6 | 1909 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_STOC_KEY_SHARE, |
db9592c1 | 1910 | SSL_R_COPY_PARAMETERS_FAILED); |
6dd083fd MC |
1911 | return 0; |
1912 | } | |
afce590b | 1913 | |
6dd083fd MC |
1914 | if (!EVP_PKEY_set1_tls_encodedpoint(skey, PACKET_data(&encoded_pt), |
1915 | PACKET_remaining(&encoded_pt))) { | |
f63a17d6 MC |
1916 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PARSE_STOC_KEY_SHARE, |
1917 | SSL_R_BAD_ECPOINT); | |
a1d6a0b6 | 1918 | EVP_PKEY_free(skey); |
6dd083fd MC |
1919 | return 0; |
1920 | } | |
1921 | ||
1922 | if (ssl_derive(s, ckey, skey, 1) == 0) { | |
f63a17d6 | 1923 | /* SSLfatal() already called */ |
6dd083fd MC |
1924 | EVP_PKEY_free(skey); |
1925 | return 0; | |
1926 | } | |
555cbb32 | 1927 | s->s3.peer_tmp = skey; |
3cf96e88 | 1928 | #endif |
6dd083fd MC |
1929 | |
1930 | return 1; | |
1931 | } | |
4ff65f77 | 1932 | |
cfef5027 | 1933 | int tls_parse_stoc_cookie(SSL *s, PACKET *pkt, unsigned int context, X509 *x, |
f63a17d6 | 1934 | size_t chainidx) |
cfef5027 MC |
1935 | { |
1936 | PACKET cookie; | |
1937 | ||
1938 | if (!PACKET_as_length_prefixed_2(pkt, &cookie) | |
1939 | || !PACKET_memdup(&cookie, &s->ext.tls13_cookie, | |
1940 | &s->ext.tls13_cookie_len)) { | |
f63a17d6 MC |
1941 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_COOKIE, |
1942 | SSL_R_LENGTH_MISMATCH); | |
cfef5027 MC |
1943 | return 0; |
1944 | } | |
1945 | ||
1946 | return 1; | |
1947 | } | |
1948 | ||
38df5a45 | 1949 | int tls_parse_stoc_early_data(SSL *s, PACKET *pkt, unsigned int context, |
f63a17d6 | 1950 | X509 *x, size_t chainidx) |
38df5a45 | 1951 | { |
fe874d27 | 1952 | if (context == SSL_EXT_TLS1_3_NEW_SESSION_TICKET) { |
6594189f MC |
1953 | unsigned long max_early_data; |
1954 | ||
1955 | if (!PACKET_get_net_4(pkt, &max_early_data) | |
1956 | || PACKET_remaining(pkt) != 0) { | |
f63a17d6 MC |
1957 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_EARLY_DATA, |
1958 | SSL_R_INVALID_MAX_EARLY_DATA); | |
6594189f MC |
1959 | return 0; |
1960 | } | |
1961 | ||
1962 | s->session->ext.max_early_data = max_early_data; | |
1963 | ||
1964 | return 1; | |
1965 | } | |
1966 | ||
38df5a45 | 1967 | if (PACKET_remaining(pkt) != 0) { |
f63a17d6 MC |
1968 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_EARLY_DATA, |
1969 | SSL_R_BAD_EXTENSION); | |
38df5a45 MC |
1970 | return 0; |
1971 | } | |
1972 | ||
4be3a7c7 | 1973 | if (!s->ext.early_data_ok |
c96ce52c | 1974 | || !s->hit) { |
38df5a45 MC |
1975 | /* |
1976 | * If we get here then we didn't send early data, or we didn't resume | |
4be3a7c7 MC |
1977 | * using the first identity, or the SNI/ALPN is not consistent so the |
1978 | * server should not be accepting it. | |
38df5a45 | 1979 | */ |
f63a17d6 MC |
1980 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PARSE_STOC_EARLY_DATA, |
1981 | SSL_R_BAD_EXTENSION); | |
38df5a45 MC |
1982 | return 0; |
1983 | } | |
1984 | ||
1985 | s->ext.early_data = SSL_EARLY_DATA_ACCEPTED; | |
1986 | ||
1987 | return 1; | |
1988 | } | |
1989 | ||
61138358 | 1990 | int tls_parse_stoc_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x, |
f63a17d6 | 1991 | size_t chainidx) |
4ff65f77 MC |
1992 | { |
1993 | #ifndef OPENSSL_NO_TLS1_3 | |
1994 | unsigned int identity; | |
1995 | ||
1996 | if (!PACKET_get_net_2(pkt, &identity) || PACKET_remaining(pkt) != 0) { | |
f63a17d6 MC |
1997 | SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_STOC_PSK, |
1998 | SSL_R_LENGTH_MISMATCH); | |
4ff65f77 MC |
1999 | return 0; |
2000 | } | |
2001 | ||
c96ce52c MC |
2002 | if (identity >= (unsigned int)s->ext.tick_identity) { |
2003 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PARSE_STOC_PSK, | |
2004 | SSL_R_BAD_PSK_IDENTITY); | |
2005 | return 0; | |
2006 | } | |
2007 | ||
2008 | /* | |
2009 | * Session resumption tickets are always sent before PSK tickets. If the | |
2010 | * ticket index is 0 then it must be for a session resumption ticket if we | |
2011 | * sent two tickets, or if we didn't send a PSK ticket. | |
2012 | */ | |
2013 | if (identity == 0 && (s->psksession == NULL || s->ext.tick_identity == 2)) { | |
9368f865 MC |
2014 | s->hit = 1; |
2015 | SSL_SESSION_free(s->psksession); | |
2016 | s->psksession = NULL; | |
2017 | return 1; | |
2018 | } | |
2019 | ||
c96ce52c MC |
2020 | if (s->psksession == NULL) { |
2021 | /* Should never happen */ | |
2022 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_STOC_PSK, | |
2023 | ERR_R_INTERNAL_ERROR); | |
4ff65f77 MC |
2024 | return 0; |
2025 | } | |
2026 | ||
add8d0e9 MC |
2027 | /* |
2028 | * If we used the external PSK for sending early_data then s->early_secret | |
2029 | * is already set up, so don't overwrite it. Otherwise we copy the | |
2030 | * early_secret across that we generated earlier. | |
2031 | */ | |
2032 | if ((s->early_data_state != SSL_EARLY_DATA_WRITE_RETRY | |
2033 | && s->early_data_state != SSL_EARLY_DATA_FINISHED_WRITING) | |
2034 | || s->session->ext.max_early_data > 0 | |
2035 | || s->psksession->ext.max_early_data == 0) | |
2036 | memcpy(s->early_secret, s->psksession->early_secret, EVP_MAX_MD_SIZE); | |
2037 | ||
9368f865 MC |
2038 | SSL_SESSION_free(s->session); |
2039 | s->session = s->psksession; | |
2040 | s->psksession = NULL; | |
4ff65f77 | 2041 | s->hit = 1; |
c96ce52c MC |
2042 | /* Early data is only allowed if we used the first ticket */ |
2043 | if (identity != 0) | |
2044 | s->ext.early_data_ok = 0; | |
4ff65f77 MC |
2045 | #endif |
2046 | ||
2047 | return 1; | |
2048 | } |