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;
46 ASN1_SEQUENCE(SSL_SESSION_ASN1) = {
47 ASN1_EMBED(SSL_SESSION_ASN1, version, UINT32),
48 ASN1_EMBED(SSL_SESSION_ASN1, ssl_version, INT32),
49 ASN1_SIMPLE(SSL_SESSION_ASN1, cipher, ASN1_OCTET_STRING),
50 ASN1_SIMPLE(SSL_SESSION_ASN1, session_id, ASN1_OCTET_STRING),
51 ASN1_SIMPLE(SSL_SESSION_ASN1, master_key, ASN1_OCTET_STRING),
52 ASN1_IMP_OPT(SSL_SESSION_ASN1, key_arg, ASN1_OCTET_STRING, 0),
53 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, time, ZINT64, 1),
54 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, timeout, ZINT64, 2),
55 ASN1_EXP_OPT(SSL_SESSION_ASN1, peer, X509, 3),
56 ASN1_EXP_OPT(SSL_SESSION_ASN1, session_id_context, ASN1_OCTET_STRING, 4),
57 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, verify_result, ZINT32, 5),
58 ASN1_EXP_OPT(SSL_SESSION_ASN1, tlsext_hostname, ASN1_OCTET_STRING, 6),
59 #ifndef OPENSSL_NO_PSK
60 ASN1_EXP_OPT(SSL_SESSION_ASN1, psk_identity_hint, ASN1_OCTET_STRING, 7),
61 ASN1_EXP_OPT(SSL_SESSION_ASN1, psk_identity, ASN1_OCTET_STRING, 8),
63 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, tlsext_tick_lifetime_hint, ZUINT64, 9),
64 ASN1_EXP_OPT(SSL_SESSION_ASN1, tlsext_tick, ASN1_OCTET_STRING, 10),
65 ASN1_EXP_OPT(SSL_SESSION_ASN1, comp_id, ASN1_OCTET_STRING, 11),
66 #ifndef OPENSSL_NO_SRP
67 ASN1_EXP_OPT(SSL_SESSION_ASN1, srp_username, ASN1_OCTET_STRING, 12),
69 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, flags, ZUINT64, 13),
70 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, tlsext_tick_age_add, ZUINT32, 14),
71 ASN1_EXP_OPT_EMBED(SSL_SESSION_ASN1, max_early_data, ZUINT32, 15),
72 ASN1_EXP_OPT(SSL_SESSION_ASN1, alpn_selected, ASN1_OCTET_STRING, 16)
73 } static_ASN1_SEQUENCE_END(SSL_SESSION_ASN1)
75 IMPLEMENT_STATIC_ASN1_ENCODE_FUNCTIONS(SSL_SESSION_ASN1)
77 /* Utility functions for i2d_SSL_SESSION */
79 /* Initialise OCTET STRING from buffer and length */
81 static void ssl_session_oinit(ASN1_OCTET_STRING **dest, ASN1_OCTET_STRING *os,
82 unsigned char *data, size_t len)
85 os->length = (int)len;
90 /* Initialise OCTET STRING from string */
91 static void ssl_session_sinit(ASN1_OCTET_STRING **dest, ASN1_OCTET_STRING *os,
95 ssl_session_oinit(dest, os, (unsigned char *)data, strlen(data));
100 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
105 ASN1_OCTET_STRING cipher;
106 unsigned char cipher_data[2];
107 ASN1_OCTET_STRING master_key, session_id, sid_ctx;
109 #ifndef OPENSSL_NO_COMP
110 ASN1_OCTET_STRING comp_id;
111 unsigned char comp_id_data;
113 ASN1_OCTET_STRING tlsext_hostname, tlsext_tick;
114 #ifndef OPENSSL_NO_SRP
115 ASN1_OCTET_STRING srp_username;
117 #ifndef OPENSSL_NO_PSK
118 ASN1_OCTET_STRING psk_identity, psk_identity_hint;
120 ASN1_OCTET_STRING alpn_selected;
124 if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
127 memset(&as, 0, sizeof(as));
129 as.version = SSL_SESSION_ASN1_VERSION;
130 as.ssl_version = in->ssl_version;
132 if (in->cipher == NULL)
136 cipher_data[0] = ((unsigned char)(l >> 8L)) & 0xff;
137 cipher_data[1] = ((unsigned char)(l)) & 0xff;
139 ssl_session_oinit(&as.cipher, &cipher, cipher_data, 2);
141 #ifndef OPENSSL_NO_COMP
142 if (in->compress_meth) {
143 comp_id_data = (unsigned char)in->compress_meth;
144 ssl_session_oinit(&as.comp_id, &comp_id, &comp_id_data, 1);
148 ssl_session_oinit(&as.master_key, &master_key,
149 in->master_key, in->master_key_length);
151 ssl_session_oinit(&as.session_id, &session_id,
152 in->session_id, in->session_id_length);
154 ssl_session_oinit(&as.session_id_context, &sid_ctx,
155 in->sid_ctx, in->sid_ctx_length);
158 as.timeout = in->timeout;
159 as.verify_result = in->verify_result;
163 ssl_session_sinit(&as.tlsext_hostname, &tlsext_hostname,
166 ssl_session_oinit(&as.tlsext_tick, &tlsext_tick,
167 in->ext.tick, in->ext.ticklen);
169 if (in->ext.tick_lifetime_hint > 0)
170 as.tlsext_tick_lifetime_hint = in->ext.tick_lifetime_hint;
171 as.tlsext_tick_age_add = in->ext.tick_age_add;
172 #ifndef OPENSSL_NO_PSK
173 ssl_session_sinit(&as.psk_identity_hint, &psk_identity_hint,
174 in->psk_identity_hint);
175 ssl_session_sinit(&as.psk_identity, &psk_identity, in->psk_identity);
176 #endif /* OPENSSL_NO_PSK */
177 #ifndef OPENSSL_NO_SRP
178 ssl_session_sinit(&as.srp_username, &srp_username, in->srp_username);
179 #endif /* OPENSSL_NO_SRP */
181 as.flags = in->flags;
182 as.max_early_data = in->ext.max_early_data;
184 if (in->ext.alpn_selected == NULL)
185 as.alpn_selected = NULL;
187 ssl_session_oinit(&as.alpn_selected, &alpn_selected,
188 in->ext.alpn_selected, in->ext.alpn_selected_len);
190 return i2d_SSL_SESSION_ASN1(&as, pp);
194 /* Utility functions for d2i_SSL_SESSION */
196 /* OPENSSL_strndup an OCTET STRING */
198 static int ssl_session_strndup(char **pdst, ASN1_OCTET_STRING *src)
204 *pdst = OPENSSL_strndup((char *)src->data, src->length);
210 /* Copy an OCTET STRING, return error if it exceeds maximum length */
212 static int ssl_session_memcpy(unsigned char *dst, size_t *pdstlen,
213 ASN1_OCTET_STRING *src, size_t maxlen)
219 if (src->length < 0 || src->length > (int)maxlen)
221 memcpy(dst, src->data, src->length);
222 *pdstlen = src->length;
226 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
231 const unsigned char *p = *pp;
232 SSL_SESSION_ASN1 *as = NULL;
233 SSL_SESSION *ret = NULL;
235 as = d2i_SSL_SESSION_ASN1(NULL, &p, length);
236 /* ASN.1 code returns suitable error */
241 ret = SSL_SESSION_new();
248 if (as->version != SSL_SESSION_ASN1_VERSION) {
249 SSLerr(SSL_F_D2I_SSL_SESSION, SSL_R_UNKNOWN_SSL_VERSION);
253 if ((as->ssl_version >> 8) != SSL3_VERSION_MAJOR
254 && (as->ssl_version >> 8) != DTLS1_VERSION_MAJOR
255 && as->ssl_version != DTLS1_BAD_VER) {
256 SSLerr(SSL_F_D2I_SSL_SESSION, SSL_R_UNSUPPORTED_SSL_VERSION);
260 ret->ssl_version = (int)as->ssl_version;
262 if (as->cipher->length != 2) {
263 SSLerr(SSL_F_D2I_SSL_SESSION, SSL_R_CIPHER_CODE_WRONG_LENGTH);
267 id = 0x03000000L | ((unsigned long)as->cipher->data[0] << 8L)
268 | (unsigned long)as->cipher->data[1];
271 ret->cipher = ssl3_get_cipher_by_id(id);
272 if (ret->cipher == NULL)
275 if (!ssl_session_memcpy(ret->session_id, &ret->session_id_length,
276 as->session_id, SSL3_MAX_SSL_SESSION_ID_LENGTH))
279 if (!ssl_session_memcpy(ret->master_key, &tmpl,
280 as->master_key, TLS13_MAX_RESUMPTION_MASTER_LENGTH))
283 ret->master_key_length = tmpl;
286 ret->time = as->time;
288 ret->time = (unsigned long)time(NULL);
290 if (as->timeout != 0)
291 ret->timeout = as->timeout;
295 X509_free(ret->peer);
296 ret->peer = as->peer;
299 if (!ssl_session_memcpy(ret->sid_ctx, &ret->sid_ctx_length,
300 as->session_id_context, SSL_MAX_SID_CTX_LENGTH))
303 /* NB: this defaults to zero which is X509_V_OK */
304 ret->verify_result = as->verify_result;
306 if (!ssl_session_strndup(&ret->ext.hostname, as->tlsext_hostname))
309 #ifndef OPENSSL_NO_PSK
310 if (!ssl_session_strndup(&ret->psk_identity_hint, as->psk_identity_hint))
312 if (!ssl_session_strndup(&ret->psk_identity, as->psk_identity))
316 ret->ext.tick_lifetime_hint = as->tlsext_tick_lifetime_hint;
317 ret->ext.tick_age_add = as->tlsext_tick_age_add;
318 if (as->tlsext_tick) {
319 ret->ext.tick = as->tlsext_tick->data;
320 ret->ext.ticklen = as->tlsext_tick->length;
321 as->tlsext_tick->data = NULL;
323 ret->ext.tick = NULL;
325 #ifndef OPENSSL_NO_COMP
327 if (as->comp_id->length != 1) {
328 SSLerr(SSL_F_D2I_SSL_SESSION, SSL_R_BAD_LENGTH);
331 ret->compress_meth = as->comp_id->data[0];
333 ret->compress_meth = 0;
337 #ifndef OPENSSL_NO_SRP
338 if (!ssl_session_strndup(&ret->srp_username, as->srp_username))
340 #endif /* OPENSSL_NO_SRP */
341 /* Flags defaults to zero which is fine */
342 ret->flags = as->flags;
343 ret->ext.max_early_data = as->max_early_data;
345 if (as->alpn_selected != NULL) {
346 if (!ssl_session_strndup((char **)&ret->ext.alpn_selected,
349 ret->ext.alpn_selected_len = as->alpn_selected->length;
351 ret->ext.alpn_selected = NULL;
352 ret->ext.alpn_selected_len = 0;
355 M_ASN1_free_of(as, SSL_SESSION_ASN1);
357 if ((a != NULL) && (*a == NULL))
363 M_ASN1_free_of(as, SSL_SESSION_ASN1);
364 if ((a == NULL) || (*a != ret))
365 SSL_SESSION_free(ret);