ssl/ssl_asn1.c

   1 /* ssl/ssl_asn1.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58 /* ====================================================================
  59  * Copyright 2005 Nokia. All rights reserved.
  60  *
  61  * The portions of the attached software ("Contribution") is developed by
  62  * Nokia Corporation and is licensed pursuant to the OpenSSL open source
  63  * license.
  64  *
  65  * The Contribution, originally written by Mika Kousa and Pasi Eronen of
  66  * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
  67  * support (see RFC 4279) to OpenSSL.
  68  *
  69  * No patent licenses or other rights except those expressly stated in
  70  * the OpenSSL open source license shall be deemed granted or received
  71  * expressly, by implication, estoppel, or otherwise.
  72  *
  73  * No assurances are provided by Nokia that the Contribution does not
  74  * infringe the patent or other intellectual property rights of any third
  75  * party or that the license provides you with all the necessary rights
  76  * to make use of the Contribution.
  77  *
  78  * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
  79  * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
  80  * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
  81  * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
  82  * OTHERWISE.
  83  */
  84
  85 #include <stdio.h>
  86 #include <stdlib.h>
  87 #include "ssl_locl.h"
  88 #include <openssl/asn1_mac.h>
  89 #include <openssl/objects.h>
  90 #include <openssl/x509.h>
  91
  92 typedef struct ssl_session_asn1_st
  93         {
  94         ASN1_INTEGER version;
  95         ASN1_INTEGER ssl_version;
  96         ASN1_OCTET_STRING cipher;
  97         ASN1_OCTET_STRING master_key;
  98         ASN1_OCTET_STRING session_id;
  99         ASN1_OCTET_STRING session_id_context;
 100         ASN1_OCTET_STRING key_arg;
 101 #ifndef OPENSSL_NO_KRB5
 102         ASN1_OCTET_STRING krb5_princ;
 103 #endif /* OPENSSL_NO_KRB5 */
 104         ASN1_INTEGER time;
 105         ASN1_INTEGER timeout;
 106         ASN1_INTEGER verify_result;
 107 #ifndef OPENSSL_NO_TLSEXT
 108         ASN1_OCTET_STRING tlsext_hostname;
 109         ASN1_INTEGER tlsext_tick_lifetime;
 110         ASN1_OCTET_STRING tlsext_tick;
 111 #endif /* OPENSSL_NO_TLSEXT */
 112 #ifndef OPENSSL_NO_PSK
 113         ASN1_OCTET_STRING psk_identity_hint;
 114         ASN1_OCTET_STRING psk_identity;
 115 #endif /* OPENSSL_NO_PSK */
 116         } SSL_SESSION_ASN1;
 117
 118 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
 119         {
 120 #define LSIZE2 (sizeof(long)*2)
 121         int v1=0,v2=0,v3=0,v4=0,v5=0,v7=0,v8=0;
 122         unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
 123         unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
 124 #ifndef OPENSSL_NO_TLSEXT
 125         int v6=0,v9=0,v10=0;
 126         unsigned char ibuf6[LSIZE2];
 127 #endif
 128         long l;
 129         SSL_SESSION_ASN1 a;
 130         M_ASN1_I2D_vars(in);
 131
 132         if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
 133                 return(0);
 134
 135         /* Note that I cheat in the following 2 assignments.  I know
 136          * that if the ASN1_INTEGER passed to ASN1_INTEGER_set
 137          * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
 138          * This is a bit evil but makes things simple, no dynamic allocation
 139          * to clean up :-) */
 140         a.version.length=LSIZE2;
 141         a.version.type=V_ASN1_INTEGER;
 142         a.version.data=ibuf1;
 143         ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
 144
 145         a.ssl_version.length=LSIZE2;
 146         a.ssl_version.type=V_ASN1_INTEGER;
 147         a.ssl_version.data=ibuf2;
 148         ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
 149
 150         a.cipher.type=V_ASN1_OCTET_STRING;
 151         a.cipher.data=buf;
 152
 153         if (in->cipher == NULL)
 154                 l=in->cipher_id;
 155         else
 156                 l=in->cipher->id;
 157         if (in->ssl_version == SSL2_VERSION)
 158                 {
 159                 a.cipher.length=3;
 160                 buf[0]=((unsigned char)(l>>16L))&0xff;
 161                 buf[1]=((unsigned char)(l>> 8L))&0xff;
 162                 buf[2]=((unsigned char)(l     ))&0xff;
 163                 }
 164         else
 165                 {
 166                 a.cipher.length=2;
 167                 buf[0]=((unsigned char)(l>>8L))&0xff;
 168                 buf[1]=((unsigned char)(l    ))&0xff;
 169                 }
 170
 171         a.master_key.length=in->master_key_length;
 172         a.master_key.type=V_ASN1_OCTET_STRING;
 173         a.master_key.data=in->master_key;
 174
 175         a.session_id.length=in->session_id_length;
 176         a.session_id.type=V_ASN1_OCTET_STRING;
 177         a.session_id.data=in->session_id;
 178
 179         a.session_id_context.length=in->sid_ctx_length;
 180         a.session_id_context.type=V_ASN1_OCTET_STRING;
 181         a.session_id_context.data=in->sid_ctx;
 182
 183         a.key_arg.length=in->key_arg_length;
 184         a.key_arg.type=V_ASN1_OCTET_STRING;
 185         a.key_arg.data=in->key_arg;
 186
 187 #ifndef OPENSSL_NO_KRB5
 188         if (in->krb5_client_princ_len)
 189                 {
 190                 a.krb5_princ.length=in->krb5_client_princ_len;
 191                 a.krb5_princ.type=V_ASN1_OCTET_STRING;
 192                 a.krb5_princ.data=in->krb5_client_princ;
 193                 }
 194 #endif /* OPENSSL_NO_KRB5 */
 195
 196         if (in->time != 0L)
 197                 {
 198                 a.time.length=LSIZE2;
 199                 a.time.type=V_ASN1_INTEGER;
 200                 a.time.data=ibuf3;
 201                 ASN1_INTEGER_set(&(a.time),in->time);
 202                 }
 203
 204         if (in->timeout != 0L)
 205                 {
 206                 a.timeout.length=LSIZE2;
 207                 a.timeout.type=V_ASN1_INTEGER;
 208                 a.timeout.data=ibuf4;
 209                 ASN1_INTEGER_set(&(a.timeout),in->timeout);
 210                 }
 211
 212         if (in->verify_result != X509_V_OK)
 213                 {
 214                 a.verify_result.length=LSIZE2;
 215                 a.verify_result.type=V_ASN1_INTEGER;
 216                 a.verify_result.data=ibuf5;
 217                 ASN1_INTEGER_set(&a.verify_result,in->verify_result);
 218                 }
 219
 220 #ifndef OPENSSL_NO_TLSEXT
 221         if (in->tlsext_hostname)
 222                 {
 223                 a.tlsext_hostname.length=strlen(in->tlsext_hostname);
 224                 a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
 225                 a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
 226                 }
 227         if (in->tlsext_tick)
 228                 {
 229                 a.tlsext_tick.length= in->tlsext_ticklen;
 230                 a.tlsext_tick.type=V_ASN1_OCTET_STRING;
 231                 a.tlsext_tick.data=(unsigned char *)in->tlsext_tick;
 232                 /* If we have a ticket set session ID to empty because
 233                  * it will be bogus.
 234                  */
 235                 if (in->tlsext_ticklen)
 236                         a.session_id.length=0;
 237                 }
 238         if (in->tlsext_tick_lifetime_hint != 0)
 239                 {
 240                 a.tlsext_tick_lifetime.length=LSIZE2;
 241                 a.tlsext_tick_lifetime.type=V_ASN1_INTEGER;
 242                 a.tlsext_tick_lifetime.data=ibuf6;
 243                 ASN1_INTEGER_set(&a.tlsext_tick_lifetime,in->tlsext_tick_lifetime_hint);
 244                 }
 245 #endif /* OPENSSL_NO_TLSEXT */
 246 #ifndef OPENSSL_NO_PSK
 247         if (in->psk_identity_hint)
 248                 {
 249                 a.psk_identity_hint.length=strlen(in->psk_identity_hint);
 250                 a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
 251                 a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
 252                 }
 253         if (in->psk_identity)
 254                 {
 255                 a.psk_identity.length=strlen(in->psk_identity);
 256                 a.psk_identity.type=V_ASN1_OCTET_STRING;
 257                 a.psk_identity.data=(unsigned char *)(in->psk_identity);
 258                 }
 259 #endif /* OPENSSL_NO_PSK */
 260
 261         M_ASN1_I2D_len(&(a.version),            i2d_ASN1_INTEGER);
 262         M_ASN1_I2D_len(&(a.ssl_version),        i2d_ASN1_INTEGER);
 263         M_ASN1_I2D_len(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 264         M_ASN1_I2D_len(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 265         M_ASN1_I2D_len(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 266 #ifndef OPENSSL_NO_KRB5
 267         if (in->krb5_client_princ_len)
 268                 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 269 #endif /* OPENSSL_NO_KRB5 */
 270         if (in->key_arg_length > 0)
 271                 M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
 272         if (in->time != 0L)
 273                 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 274         if (in->timeout != 0L)
 275                 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 276         if (in->peer != NULL)
 277                 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
 278         M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
 279         if (in->verify_result != X509_V_OK)
 280                 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
 281
 282 #ifndef OPENSSL_NO_TLSEXT
 283         if (in->tlsext_tick_lifetime_hint)
 284                 M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 285         if (in->tlsext_tick)
 286                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 287         if (in->tlsext_hostname)
 288                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 289 #endif /* OPENSSL_NO_TLSEXT */
 290 #ifndef OPENSSL_NO_PSK
 291         if (in->psk_identity_hint)
 292                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 293         if (in->psk_identity)
 294                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 295 #endif /* OPENSSL_NO_PSK */
 296
 297         M_ASN1_I2D_seq_total();
 298
 299         M_ASN1_I2D_put(&(a.version),            i2d_ASN1_INTEGER);
 300         M_ASN1_I2D_put(&(a.ssl_version),        i2d_ASN1_INTEGER);
 301         M_ASN1_I2D_put(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 302         M_ASN1_I2D_put(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 303         M_ASN1_I2D_put(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 304 #ifndef OPENSSL_NO_KRB5
 305         if (in->krb5_client_princ_len)
 306                 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 307 #endif /* OPENSSL_NO_KRB5 */
 308         if (in->key_arg_length > 0)
 309                 M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
 310         if (in->time != 0L)
 311                 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 312         if (in->timeout != 0L)
 313                 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 314         if (in->peer != NULL)
 315                 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
 316         M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
 317                                v4);
 318         if (in->verify_result != X509_V_OK)
 319                 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
 320 #ifndef OPENSSL_NO_TLSEXT
 321         if (in->tlsext_hostname)
 322                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 323 #endif /* OPENSSL_NO_TLSEXT */
 324 #ifndef OPENSSL_NO_PSK
 325         if (in->psk_identity_hint)
 326                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 327         if (in->psk_identity)
 328                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 329 #endif /* OPENSSL_NO_PSK */
 330 #ifndef OPENSSL_NO_TLSEXT
 331         if (in->tlsext_tick_lifetime_hint)
 332                 M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 333         if (in->tlsext_tick)
 334                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 335 #endif /* OPENSSL_NO_TLSEXT */
 336         M_ASN1_I2D_finish();
 337         }
 338
 339 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 340              long length)
 341         {
 342         int version,ssl_version=0,i;
 343         long id;
 344         ASN1_INTEGER ai,*aip;
 345         ASN1_OCTET_STRING os,*osp;
 346         M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
 347
 348         aip= &ai;
 349         osp= &os;
 350
 351         M_ASN1_D2I_Init();
 352         M_ASN1_D2I_start_sequence();
 353
 354         ai.data=NULL; ai.length=0;
 355         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 356         version=(int)ASN1_INTEGER_get(aip);
 357         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 358
 359         /* we don't care about the version right now :-) */
 360         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 361         ssl_version=(int)ASN1_INTEGER_get(aip);
 362         ret->ssl_version=ssl_version;
 363         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 364
 365         os.data=NULL; os.length=0;
 366         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 367         if (ssl_version == SSL2_VERSION)
 368                 {
 369                 if (os.length != 3)
 370                         {
 371                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 372                         goto err;
 373                         }
 374                 id=0x02000000L|
 375                         ((unsigned long)os.data[0]<<16L)|
 376                         ((unsigned long)os.data[1]<< 8L)|
 377                          (unsigned long)os.data[2];
 378                 }
 379         else if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 380                 {
 381                 if (os.length != 2)
 382                         {
 383                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 384                         goto err;
 385                         }
 386                 id=0x03000000L|
 387                         ((unsigned long)os.data[0]<<8L)|
 388                          (unsigned long)os.data[1];
 389                 }
 390         else
 391                 {
 392                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_UNKNOWN_SSL_VERSION);
 393                 return(NULL);
 394                 }
 395
 396         ret->cipher=NULL;
 397         ret->cipher_id=id;
 398
 399         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 400         if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 401                 i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 402         else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
 403                 i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
 404
 405         if (os.length > i)
 406                 os.length = i;
 407         if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
 408                 os.length = sizeof(ret->session_id);
 409
 410         ret->session_id_length=os.length;
 411         OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
 412         memcpy(ret->session_id,os.data,os.length);
 413
 414         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 415         if (ret->master_key_length > SSL_MAX_MASTER_KEY_LENGTH)
 416                 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
 417         else
 418                 ret->master_key_length=os.length;
 419         memcpy(ret->master_key,os.data,ret->master_key_length);
 420
 421         os.length=0;
 422
 423 #ifndef OPENSSL_NO_KRB5
 424         os.length=0;
 425         M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
 426         if (os.data)
 427                 {
 428                 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
 429                         ret->krb5_client_princ_len=0;
 430                 else
 431                         ret->krb5_client_princ_len=os.length;
 432                 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
 433                 OPENSSL_free(os.data);
 434                 os.data = NULL;
 435                 os.length = 0;
 436                 }
 437         else
 438                 ret->krb5_client_princ_len=0;
 439 #endif /* OPENSSL_NO_KRB5 */
 440
 441         M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
 442         if (os.length > SSL_MAX_KEY_ARG_LENGTH)
 443                 ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
 444         else
 445                 ret->key_arg_length=os.length;
 446         memcpy(ret->key_arg,os.data,ret->key_arg_length);
 447         if (os.data != NULL) OPENSSL_free(os.data);
 448
 449         ai.length=0;
 450         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
 451         if (ai.data != NULL)
 452                 {
 453                 ret->time=ASN1_INTEGER_get(aip);
 454                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 455                 }
 456         else
 457                 ret->time=(unsigned long)time(NULL);
 458
 459         ai.length=0;
 460         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
 461         if (ai.data != NULL)
 462                 {
 463                 ret->timeout=ASN1_INTEGER_get(aip);
 464                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 465                 }
 466         else
 467                 ret->timeout=3;
 468
 469         if (ret->peer != NULL)
 470                 {
 471                 X509_free(ret->peer);
 472                 ret->peer=NULL;
 473                 }
 474         M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
 475
 476         os.length=0;
 477         os.data=NULL;
 478         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
 479
 480         if(os.data != NULL)
 481             {
 482             if (os.length > SSL_MAX_SID_CTX_LENGTH)
 483                 {
 484                 ret->sid_ctx_length=os.length;
 485                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_BAD_LENGTH);
 486                 }
 487             else
 488                 {
 489                 ret->sid_ctx_length=os.length;
 490                 memcpy(ret->sid_ctx,os.data,os.length);
 491                 }
 492             OPENSSL_free(os.data); os.data=NULL; os.length=0;
 493             }
 494         else
 495             ret->sid_ctx_length=0;
 496
 497         ai.length=0;
 498         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
 499         if (ai.data != NULL)
 500                 {
 501                 ret->verify_result=ASN1_INTEGER_get(aip);
 502                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 503                 }
 504         else
 505                 ret->verify_result=X509_V_OK;
 506
 507 #ifndef OPENSSL_NO_TLSEXT
 508         os.length=0;
 509         os.data=NULL;
 510         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
 511         if (os.data)
 512                 {
 513                 ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
 514                 OPENSSL_free(os.data);
 515                 os.data = NULL;
 516                 os.length = 0;
 517                 }
 518         else
 519                 ret->tlsext_hostname=NULL;
 520 #endif /* OPENSSL_NO_TLSEXT */
 521
 522 #ifndef OPENSSL_NO_PSK
 523         os.length=0;
 524         os.data=NULL;
 525         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7);
 526         if (os.data)
 527                 {
 528                 ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length);
 529                 OPENSSL_free(os.data);
 530                 os.data = NULL;
 531                 os.length = 0;
 532                 }
 533         else
 534                 ret->psk_identity_hint=NULL;
 535 #endif /* OPENSSL_NO_PSK */
 536
 537 #ifndef OPENSSL_NO_TLSEXT
 538         ai.length=0;
 539         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,9);
 540         if (ai.data != NULL)
 541                 {
 542                 ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip);
 543                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 544                 }
 545         else
 546                 ret->tlsext_tick_lifetime_hint=0;
 547         os.length=0;
 548         os.data=NULL;
 549         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
 550         if (os.data)
 551                 {
 552                 ret->tlsext_tick = os.data;
 553                 ret->tlsext_ticklen = os.length;
 554                 os.data = NULL;
 555                 os.length = 0;
 556 #if 0
 557                 /* There are two ways to detect a resumed ticket sesion.
 558                  * One is to set a random session ID and then the server
 559                  * must return a match in ServerHello. This allows the normal
 560                  * client session ID matching to work.
 561                  */
 562                 if (ret->session_id_length == 0)
 563                         {
 564                         ret->session_id_length=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 565                         RAND_pseudo_bytes(ret->session_id,
 566                                                 ret->session_id_length);
 567                         }
 568 #endif
 569                 }
 570         else
 571                 ret->tlsext_tick=NULL;
 572 #endif /* OPENSSL_NO_TLSEXT */
 573
 574         M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
 575         }