2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright 2005 Nokia. All rights reserved.
5 * Licensed under the OpenSSL license (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
14 #include <openssl/asn1t.h>
15 #include <openssl/x509.h>
20 ASN1_OCTET_STRING *cipher;
21 ASN1_OCTET_STRING *comp_id;
22 ASN1_OCTET_STRING *master_key;
23 ASN1_OCTET_STRING *session_id;
24 ASN1_OCTET_STRING *key_arg;
28 ASN1_OCTET_STRING *session_id_context;
29 int32_t verify_result;
30 ASN1_OCTET_STRING *tlsext_hostname;
31 uint64_t tlsext_tick_lifetime_hint;
32 uint32_t tlsext_tick_age_add;
33 ASN1_OCTET_STRING *tlsext_tick;
34 #ifndef OPENSSL_NO_PSK
35 ASN1_OCTET_STRING *psk_identity_hint;
36 ASN1_OCTET_STRING *psk_identity;
38 #ifndef OPENSSL_NO_SRP
39 ASN1_OCTET_STRING *srp_username;
42 uint32_t max_early_data;
43 ASN1_OCTET_STRING *alpn_selected;
44 ASN1_OCTET_STRING *tick_nonce;
47 ASN1_SEQUENCE(SSL_SESSION_ASN1) = {
48 ASN1_EMBED(SSL_SESSION_ASN1, version, UINT32),
49 ASN1_EMBED(SSL_SESSION_ASN1, ssl_version, INT32),
50 ASN1_SIMPLE(SSL_SESSION_ASN1, cipher, ASN1_OCTET_STRING),
51 ASN1_SIMPLE(SSL_SESSION_ASN1, session_id, ASN1_OCTET_STRING),
52 ASN1_SIMPLE(SSL_SESSION_ASN1, master_key, ASN1_OCTET_STRING),
53 ASN1_IMP_OPT(SSL_SESSION_ASN1, key_arg, ASN1_OCTET_STRING, 0),
54 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, time, ZINT64, 1),
55 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, timeout, ZINT64, 2),
56 ASN1_EXP_OPT(SSL_SESSION_ASN1, peer, X509, 3),
57 ASN1_EXP_OPT(SSL_SESSION_ASN1, session_id_context, ASN1_OCTET_STRING, 4),
58 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, verify_result, ZINT32, 5),
59 ASN1_EXP_OPT(SSL_SESSION_ASN1, tlsext_hostname, ASN1_OCTET_STRING, 6),
60 #ifndef OPENSSL_NO_PSK
61 ASN1_EXP_OPT(SSL_SESSION_ASN1, psk_identity_hint, ASN1_OCTET_STRING, 7),
62 ASN1_EXP_OPT(SSL_SESSION_ASN1, psk_identity, ASN1_OCTET_STRING, 8),
64 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, tlsext_tick_lifetime_hint, ZUINT64, 9),
65 ASN1_EXP_OPT(SSL_SESSION_ASN1, tlsext_tick, ASN1_OCTET_STRING, 10),
66 ASN1_EXP_OPT(SSL_SESSION_ASN1, comp_id, ASN1_OCTET_STRING, 11),
67 #ifndef OPENSSL_NO_SRP
68 ASN1_EXP_OPT(SSL_SESSION_ASN1, srp_username, ASN1_OCTET_STRING, 12),
70 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, flags, ZUINT64, 13),
71 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, tlsext_tick_age_add, ZUINT32, 14),
72 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, max_early_data, ZUINT32, 15),
73 ASN1_EXP_OPT(SSL_SESSION_ASN1, alpn_selected, ASN1_OCTET_STRING, 16),
74 ASN1_EXP_OPT(SSL_SESSION_ASN1, tick_nonce, ASN1_OCTET_STRING, 17)
75 } static_ASN1_SEQUENCE_END(SSL_SESSION_ASN1)
77 IMPLEMENT_STATIC_ASN1_ENCODE_FUNCTIONS(SSL_SESSION_ASN1)
79 /* Utility functions for i2d_SSL_SESSION */
81 /* Initialise OCTET STRING from buffer and length */
83 static void ssl_session_oinit(ASN1_OCTET_STRING **dest, ASN1_OCTET_STRING *os,
84 unsigned char *data, size_t len)
87 os->length = (int)len;
92 /* Initialise OCTET STRING from string */
93 static void ssl_session_sinit(ASN1_OCTET_STRING **dest, ASN1_OCTET_STRING *os,
97 ssl_session_oinit(dest, os, (unsigned char *)data, strlen(data));
102 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
107 ASN1_OCTET_STRING cipher;
108 unsigned char cipher_data[2];
109 ASN1_OCTET_STRING master_key, session_id, sid_ctx;
111 #ifndef OPENSSL_NO_COMP
112 ASN1_OCTET_STRING comp_id;
113 unsigned char comp_id_data;
115 ASN1_OCTET_STRING tlsext_hostname, tlsext_tick;
116 #ifndef OPENSSL_NO_SRP
117 ASN1_OCTET_STRING srp_username;
119 #ifndef OPENSSL_NO_PSK
120 ASN1_OCTET_STRING psk_identity, psk_identity_hint;
122 ASN1_OCTET_STRING alpn_selected;
123 ASN1_OCTET_STRING tick_nonce;
127 if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
130 memset(&as, 0, sizeof(as));
132 as.version = SSL_SESSION_ASN1_VERSION;
133 as.ssl_version = in->ssl_version;
135 if (in->cipher == NULL)
139 cipher_data[0] = ((unsigned char)(l >> 8L)) & 0xff;
140 cipher_data[1] = ((unsigned char)(l)) & 0xff;
142 ssl_session_oinit(&as.cipher, &cipher, cipher_data, 2);
144 #ifndef OPENSSL_NO_COMP
145 if (in->compress_meth) {
146 comp_id_data = (unsigned char)in->compress_meth;
147 ssl_session_oinit(&as.comp_id, &comp_id, &comp_id_data, 1);
151 ssl_session_oinit(&as.master_key, &master_key,
152 in->master_key, in->master_key_length);
154 ssl_session_oinit(&as.session_id, &session_id,
155 in->session_id, in->session_id_length);
157 ssl_session_oinit(&as.session_id_context, &sid_ctx,
158 in->sid_ctx, in->sid_ctx_length);
161 as.timeout = in->timeout;
162 as.verify_result = in->verify_result;
166 ssl_session_sinit(&as.tlsext_hostname, &tlsext_hostname,
169 ssl_session_oinit(&as.tlsext_tick, &tlsext_tick,
170 in->ext.tick, in->ext.ticklen);
172 if (in->ext.tick_lifetime_hint > 0)
173 as.tlsext_tick_lifetime_hint = in->ext.tick_lifetime_hint;
174 as.tlsext_tick_age_add = in->ext.tick_age_add;
175 #ifndef OPENSSL_NO_PSK
176 ssl_session_sinit(&as.psk_identity_hint, &psk_identity_hint,
177 in->psk_identity_hint);
178 ssl_session_sinit(&as.psk_identity, &psk_identity, in->psk_identity);
179 #endif /* OPENSSL_NO_PSK */
180 #ifndef OPENSSL_NO_SRP
181 ssl_session_sinit(&as.srp_username, &srp_username, in->srp_username);
182 #endif /* OPENSSL_NO_SRP */
184 as.flags = in->flags;
185 as.max_early_data = in->ext.max_early_data;
187 if (in->ext.alpn_selected == NULL)
188 as.alpn_selected = NULL;
190 ssl_session_oinit(&as.alpn_selected, &alpn_selected,
191 in->ext.alpn_selected, in->ext.alpn_selected_len);
193 if (in->ext.tick_nonce == NULL)
194 as.tick_nonce = NULL;
196 ssl_session_oinit(&as.tick_nonce, &tick_nonce,
197 in->ext.tick_nonce, in->ext.tick_nonce_len);
199 return i2d_SSL_SESSION_ASN1(&as, pp);
203 /* Utility functions for d2i_SSL_SESSION */
205 /* OPENSSL_strndup an OCTET STRING */
207 static int ssl_session_strndup(char **pdst, ASN1_OCTET_STRING *src)
213 *pdst = OPENSSL_strndup((char *)src->data, src->length);
219 /* Copy an OCTET STRING, return error if it exceeds maximum length */
221 static int ssl_session_memcpy(unsigned char *dst, size_t *pdstlen,
222 ASN1_OCTET_STRING *src, size_t maxlen)
228 if (src->length < 0 || src->length > (int)maxlen)
230 memcpy(dst, src->data, src->length);
231 *pdstlen = src->length;
235 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
240 const unsigned char *p = *pp;
241 SSL_SESSION_ASN1 *as = NULL;
242 SSL_SESSION *ret = NULL;
244 as = d2i_SSL_SESSION_ASN1(NULL, &p, length);
245 /* ASN.1 code returns suitable error */
250 ret = SSL_SESSION_new();
257 if (as->version != SSL_SESSION_ASN1_VERSION) {
258 SSLerr(SSL_F_D2I_SSL_SESSION, SSL_R_UNKNOWN_SSL_VERSION);
262 if ((as->ssl_version >> 8) != SSL3_VERSION_MAJOR
263 && (as->ssl_version >> 8) != DTLS1_VERSION_MAJOR
264 && as->ssl_version != DTLS1_BAD_VER) {
265 SSLerr(SSL_F_D2I_SSL_SESSION, SSL_R_UNSUPPORTED_SSL_VERSION);
269 ret->ssl_version = (int)as->ssl_version;
271 if (as->cipher->length != 2) {
272 SSLerr(SSL_F_D2I_SSL_SESSION, SSL_R_CIPHER_CODE_WRONG_LENGTH);
276 id = 0x03000000L | ((unsigned long)as->cipher->data[0] << 8L)
277 | (unsigned long)as->cipher->data[1];
280 ret->cipher = ssl3_get_cipher_by_id(id);
281 if (ret->cipher == NULL)
284 if (!ssl_session_memcpy(ret->session_id, &ret->session_id_length,
285 as->session_id, SSL3_MAX_SSL_SESSION_ID_LENGTH))
288 if (!ssl_session_memcpy(ret->master_key, &tmpl,
289 as->master_key, TLS13_MAX_RESUMPTION_MASTER_LENGTH))
292 ret->master_key_length = tmpl;
295 ret->time = as->time;
297 ret->time = (unsigned long)time(NULL);
299 if (as->timeout != 0)
300 ret->timeout = as->timeout;
304 X509_free(ret->peer);
305 ret->peer = as->peer;
308 if (!ssl_session_memcpy(ret->sid_ctx, &ret->sid_ctx_length,
309 as->session_id_context, SSL_MAX_SID_CTX_LENGTH))
312 /* NB: this defaults to zero which is X509_V_OK */
313 ret->verify_result = as->verify_result;
315 if (!ssl_session_strndup(&ret->ext.hostname, as->tlsext_hostname))
318 #ifndef OPENSSL_NO_PSK
319 if (!ssl_session_strndup(&ret->psk_identity_hint, as->psk_identity_hint))
321 if (!ssl_session_strndup(&ret->psk_identity, as->psk_identity))
325 ret->ext.tick_lifetime_hint = as->tlsext_tick_lifetime_hint;
326 ret->ext.tick_age_add = as->tlsext_tick_age_add;
327 if (as->tlsext_tick) {
328 ret->ext.tick = as->tlsext_tick->data;
329 ret->ext.ticklen = as->tlsext_tick->length;
330 as->tlsext_tick->data = NULL;
332 ret->ext.tick = NULL;
334 #ifndef OPENSSL_NO_COMP
336 if (as->comp_id->length != 1) {
337 SSLerr(SSL_F_D2I_SSL_SESSION, SSL_R_BAD_LENGTH);
340 ret->compress_meth = as->comp_id->data[0];
342 ret->compress_meth = 0;
346 #ifndef OPENSSL_NO_SRP
347 if (!ssl_session_strndup(&ret->srp_username, as->srp_username))
349 #endif /* OPENSSL_NO_SRP */
350 /* Flags defaults to zero which is fine */
351 ret->flags = as->flags;
352 ret->ext.max_early_data = as->max_early_data;
354 if (as->alpn_selected != NULL) {
355 if (!ssl_session_strndup((char **)&ret->ext.alpn_selected,
358 ret->ext.alpn_selected_len = as->alpn_selected->length;
360 ret->ext.alpn_selected = NULL;
361 ret->ext.alpn_selected_len = 0;
364 if (as->tick_nonce != NULL) {
365 ret->ext.tick_nonce = as->tick_nonce->data;
366 ret->ext.tick_nonce_len = as->tick_nonce->length;
367 as->tick_nonce->data = NULL;
369 ret->ext.tick_nonce = NULL;
370 ret->ext.tick_nonce_len = 0;
373 M_ASN1_free_of(as, SSL_SESSION_ASN1);
375 if ((a != NULL) && (*a == NULL))
381 M_ASN1_free_of(as, SSL_SESSION_ASN1);
382 if ((a == NULL) || (*a != ret))
383 SSL_SESSION_free(ret);