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,v6=0,v7=0,v8=0,v9=0,v10=0;
 122         unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
 123         unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
 124         unsigned char ibuf6[LSIZE2];
 125         long l;
 126         SSL_SESSION_ASN1 a;
 127         M_ASN1_I2D_vars(in);
 128
 129         if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
 130                 return(0);
 131
 132         /* Note that I cheat in the following 2 assignments.  I know
 133          * that if the ASN1_INTEGER passed to ASN1_INTEGER_set
 134          * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
 135          * This is a bit evil but makes things simple, no dynamic allocation
 136          * to clean up :-) */
 137         a.version.length=LSIZE2;
 138         a.version.type=V_ASN1_INTEGER;
 139         a.version.data=ibuf1;
 140         ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
 141
 142         a.ssl_version.length=LSIZE2;
 143         a.ssl_version.type=V_ASN1_INTEGER;
 144         a.ssl_version.data=ibuf2;
 145         ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
 146
 147         a.cipher.type=V_ASN1_OCTET_STRING;
 148         a.cipher.data=buf;
 149
 150         if (in->cipher == NULL)
 151                 l=in->cipher_id;
 152         else
 153                 l=in->cipher->id;
 154         if (in->ssl_version == SSL2_VERSION)
 155                 {
 156                 a.cipher.length=3;
 157                 buf[0]=((unsigned char)(l>>16L))&0xff;
 158                 buf[1]=((unsigned char)(l>> 8L))&0xff;
 159                 buf[2]=((unsigned char)(l     ))&0xff;
 160                 }
 161         else
 162                 {
 163                 a.cipher.length=2;
 164                 buf[0]=((unsigned char)(l>>8L))&0xff;
 165                 buf[1]=((unsigned char)(l    ))&0xff;
 166                 }
 167
 168         a.master_key.length=in->master_key_length;
 169         a.master_key.type=V_ASN1_OCTET_STRING;
 170         a.master_key.data=in->master_key;
 171
 172         a.session_id.length=in->session_id_length;
 173         a.session_id.type=V_ASN1_OCTET_STRING;
 174         a.session_id.data=in->session_id;
 175
 176         a.session_id_context.length=in->sid_ctx_length;
 177         a.session_id_context.type=V_ASN1_OCTET_STRING;
 178         a.session_id_context.data=in->sid_ctx;
 179
 180         a.key_arg.length=in->key_arg_length;
 181         a.key_arg.type=V_ASN1_OCTET_STRING;
 182         a.key_arg.data=in->key_arg;
 183
 184 #ifndef OPENSSL_NO_KRB5
 185         if (in->krb5_client_princ_len)
 186                 {
 187                 a.krb5_princ.length=in->krb5_client_princ_len;
 188                 a.krb5_princ.type=V_ASN1_OCTET_STRING;
 189                 a.krb5_princ.data=in->krb5_client_princ;
 190                 }
 191 #endif /* OPENSSL_NO_KRB5 */
 192
 193         if (in->time != 0L)
 194                 {
 195                 a.time.length=LSIZE2;
 196                 a.time.type=V_ASN1_INTEGER;
 197                 a.time.data=ibuf3;
 198                 ASN1_INTEGER_set(&(a.time),in->time);
 199                 }
 200
 201         if (in->timeout != 0L)
 202                 {
 203                 a.timeout.length=LSIZE2;
 204                 a.timeout.type=V_ASN1_INTEGER;
 205                 a.timeout.data=ibuf4;
 206                 ASN1_INTEGER_set(&(a.timeout),in->timeout);
 207                 }
 208
 209         if (in->verify_result != X509_V_OK)
 210                 {
 211                 a.verify_result.length=LSIZE2;
 212                 a.verify_result.type=V_ASN1_INTEGER;
 213                 a.verify_result.data=ibuf5;
 214                 ASN1_INTEGER_set(&a.verify_result,in->verify_result);
 215                 }
 216
 217 #ifndef OPENSSL_NO_TLSEXT
 218         if (in->tlsext_hostname)
 219                 {
 220                 a.tlsext_hostname.length=strlen(in->tlsext_hostname);
 221                 a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
 222                 a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
 223                 }
 224         if (in->tlsext_tick)
 225                 {
 226                 a.tlsext_tick.length= in->tlsext_ticklen;
 227                 a.tlsext_tick.type=V_ASN1_OCTET_STRING;
 228                 a.tlsext_tick.data=(unsigned char *)in->tlsext_tick;
 229                 /* If we have a ticket set session ID to empty because
 230                  * it will be bogus.
 231                  */
 232                 if (in->tlsext_ticklen)
 233                         a.session_id.length=0;
 234                 }
 235         if (in->tlsext_tick_lifetime_hint != 0)
 236                 {
 237                 a.tlsext_tick_lifetime.length=LSIZE2;
 238                 a.tlsext_tick_lifetime.type=V_ASN1_INTEGER;
 239                 a.tlsext_tick_lifetime.data=ibuf6;
 240                 ASN1_INTEGER_set(&a.tlsext_tick_lifetime,in->tlsext_tick_lifetime_hint);
 241                 }
 242 #endif /* OPENSSL_NO_TLSEXT */
 243 #ifndef OPENSSL_NO_PSK
 244         if (in->psk_identity_hint)
 245                 {
 246                 a.psk_identity_hint.length=strlen(in->psk_identity_hint);
 247                 a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
 248                 a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
 249                 }
 250         if (in->psk_identity)
 251                 {
 252                 a.psk_identity.length=strlen(in->psk_identity);
 253                 a.psk_identity.type=V_ASN1_OCTET_STRING;
 254                 a.psk_identity.data=(unsigned char *)(in->psk_identity);
 255                 }
 256 #endif /* OPENSSL_NO_PSK */
 257
 258         M_ASN1_I2D_len(&(a.version),            i2d_ASN1_INTEGER);
 259         M_ASN1_I2D_len(&(a.ssl_version),        i2d_ASN1_INTEGER);
 260         M_ASN1_I2D_len(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 261         M_ASN1_I2D_len(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 262         M_ASN1_I2D_len(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 263 #ifndef OPENSSL_NO_KRB5
 264         if (in->krb5_client_princ_len)
 265                 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 266 #endif /* OPENSSL_NO_KRB5 */
 267         if (in->key_arg_length > 0)
 268                 M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
 269         if (in->time != 0L)
 270                 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 271         if (in->timeout != 0L)
 272                 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 273         if (in->peer != NULL)
 274                 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
 275         M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
 276         if (in->verify_result != X509_V_OK)
 277                 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
 278
 279 #ifndef OPENSSL_NO_TLSEXT
 280         if (in->tlsext_tick_lifetime_hint)
 281                 M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 282         if (in->tlsext_tick)
 283                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 284         if (in->tlsext_hostname)
 285                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 286 #endif /* OPENSSL_NO_TLSEXT */
 287 #ifndef OPENSSL_NO_PSK
 288         if (in->psk_identity_hint)
 289                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 290         if (in->psk_identity)
 291                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 292 #endif /* OPENSSL_NO_PSK */
 293
 294         M_ASN1_I2D_seq_total();
 295
 296         M_ASN1_I2D_put(&(a.version),            i2d_ASN1_INTEGER);
 297         M_ASN1_I2D_put(&(a.ssl_version),        i2d_ASN1_INTEGER);
 298         M_ASN1_I2D_put(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 299         M_ASN1_I2D_put(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 300         M_ASN1_I2D_put(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 301 #ifndef OPENSSL_NO_KRB5
 302         if (in->krb5_client_princ_len)
 303                 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 304 #endif /* OPENSSL_NO_KRB5 */
 305         if (in->key_arg_length > 0)
 306                 M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
 307         if (in->time != 0L)
 308                 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 309         if (in->timeout != 0L)
 310                 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 311         if (in->peer != NULL)
 312                 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
 313         M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
 314                                v4);
 315         if (in->verify_result != X509_V_OK)
 316                 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
 317 #ifndef OPENSSL_NO_TLSEXT
 318         if (in->tlsext_hostname)
 319                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 320 #endif /* OPENSSL_NO_TLSEXT */
 321 #ifndef OPENSSL_NO_PSK
 322         if (in->psk_identity_hint)
 323                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 324         if (in->psk_identity)
 325                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 326 #endif /* OPENSSL_NO_PSK */
 327 #ifndef OPENSSL_NO_TLSEXT
 328         if (in->tlsext_tick_lifetime_hint)
 329                 M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 330         if (in->tlsext_tick)
 331                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 332 #endif /* OPENSSL_NO_TLSEXT */
 333         M_ASN1_I2D_finish();
 334         }
 335
 336 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 337              long length)
 338         {
 339         int version,ssl_version=0,i;
 340         long id;
 341         ASN1_INTEGER ai,*aip;
 342         ASN1_OCTET_STRING os,*osp;
 343         M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
 344
 345         aip= &ai;
 346         osp= &os;
 347
 348         M_ASN1_D2I_Init();
 349         M_ASN1_D2I_start_sequence();
 350
 351         ai.data=NULL; ai.length=0;
 352         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 353         version=(int)ASN1_INTEGER_get(aip);
 354         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 355
 356         /* we don't care about the version right now :-) */
 357         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 358         ssl_version=(int)ASN1_INTEGER_get(aip);
 359         ret->ssl_version=ssl_version;
 360         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 361
 362         os.data=NULL; os.length=0;
 363         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 364         if (ssl_version == SSL2_VERSION)
 365                 {
 366                 if (os.length != 3)
 367                         {
 368                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 369                         goto err;
 370                         }
 371                 id=0x02000000L|
 372                         ((unsigned long)os.data[0]<<16L)|
 373                         ((unsigned long)os.data[1]<< 8L)|
 374                          (unsigned long)os.data[2];
 375                 }
 376         else if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 377                 {
 378                 if (os.length != 2)
 379                         {
 380                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 381                         goto err;
 382                         }
 383                 id=0x03000000L|
 384                         ((unsigned long)os.data[0]<<8L)|
 385                          (unsigned long)os.data[1];
 386                 }
 387         else
 388                 {
 389                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_UNKNOWN_SSL_VERSION);
 390                 return(NULL);
 391                 }
 392
 393         ret->cipher=NULL;
 394         ret->cipher_id=id;
 395
 396         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 397         if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 398                 i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 399         else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
 400                 i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
 401
 402         if (os.length > i)
 403                 os.length = i;
 404         if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
 405                 os.length = sizeof(ret->session_id);
 406
 407         ret->session_id_length=os.length;
 408         OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
 409         memcpy(ret->session_id,os.data,os.length);
 410
 411         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 412         if (ret->master_key_length > SSL_MAX_MASTER_KEY_LENGTH)
 413                 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
 414         else
 415                 ret->master_key_length=os.length;
 416         memcpy(ret->master_key,os.data,ret->master_key_length);
 417
 418         os.length=0;
 419
 420 #ifndef OPENSSL_NO_KRB5
 421         os.length=0;
 422         M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
 423         if (os.data)
 424                 {
 425                 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
 426                         ret->krb5_client_princ_len=0;
 427                 else
 428                         ret->krb5_client_princ_len=os.length;
 429                 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
 430                 OPENSSL_free(os.data);
 431                 os.data = NULL;
 432                 os.length = 0;
 433                 }
 434         else
 435                 ret->krb5_client_princ_len=0;
 436 #endif /* OPENSSL_NO_KRB5 */
 437
 438         M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
 439         if (os.length > SSL_MAX_KEY_ARG_LENGTH)
 440                 ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
 441         else
 442                 ret->key_arg_length=os.length;
 443         memcpy(ret->key_arg,os.data,ret->key_arg_length);
 444         if (os.data != NULL) OPENSSL_free(os.data);
 445
 446         ai.length=0;
 447         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
 448         if (ai.data != NULL)
 449                 {
 450                 ret->time=ASN1_INTEGER_get(aip);
 451                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 452                 }
 453         else
 454                 ret->time=(unsigned long)time(NULL);
 455
 456         ai.length=0;
 457         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
 458         if (ai.data != NULL)
 459                 {
 460                 ret->timeout=ASN1_INTEGER_get(aip);
 461                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 462                 }
 463         else
 464                 ret->timeout=3;
 465
 466         if (ret->peer != NULL)
 467                 {
 468                 X509_free(ret->peer);
 469                 ret->peer=NULL;
 470                 }
 471         M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
 472
 473         os.length=0;
 474         os.data=NULL;
 475         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
 476
 477         if(os.data != NULL)
 478             {
 479             if (os.length > SSL_MAX_SID_CTX_LENGTH)
 480                 {
 481                 ret->sid_ctx_length=os.length;
 482                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_BAD_LENGTH);
 483                 }
 484             else
 485                 {
 486                 ret->sid_ctx_length=os.length;
 487                 memcpy(ret->sid_ctx,os.data,os.length);
 488                 }
 489             OPENSSL_free(os.data); os.data=NULL; os.length=0;
 490             }
 491         else
 492             ret->sid_ctx_length=0;
 493
 494         ai.length=0;
 495         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
 496         if (ai.data != NULL)
 497                 {
 498                 ret->verify_result=ASN1_INTEGER_get(aip);
 499                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 500                 }
 501         else
 502                 ret->verify_result=X509_V_OK;
 503
 504 #ifndef OPENSSL_NO_TLSEXT
 505         os.length=0;
 506         os.data=NULL;
 507         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
 508         if (os.data)
 509                 {
 510                 ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
 511                 OPENSSL_free(os.data);
 512                 os.data = NULL;
 513                 os.length = 0;
 514                 }
 515         else
 516                 ret->tlsext_hostname=NULL;
 517 #endif /* OPENSSL_NO_TLSEXT */
 518
 519 #ifndef OPENSSL_NO_PSK
 520         os.length=0;
 521         os.data=NULL;
 522         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7);
 523         if (os.data)
 524                 {
 525                 ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length);
 526                 OPENSSL_free(os.data);
 527                 os.data = NULL;
 528                 os.length = 0;
 529                 }
 530         else
 531                 ret->psk_identity_hint=NULL;
 532 #endif /* OPENSSL_NO_PSK */
 533
 534 #ifndef OPENSSL_NO_TLSEXT
 535         ai.length=0;
 536         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,9);
 537         if (ai.data != NULL)
 538                 {
 539                 ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip);
 540                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 541                 }
 542         else
 543                 ret->tlsext_tick_lifetime_hint=0;
 544         os.length=0;
 545         os.data=NULL;
 546         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
 547         if (os.data)
 548                 {
 549                 ret->tlsext_tick = os.data;
 550                 ret->tlsext_ticklen = os.length;
 551                 os.data = NULL;
 552                 os.length = 0;
 553 #if 0
 554                 /* There are two ways to detect a resumed ticket sesion.
 555                  * One is to set a random session ID and then the server
 556                  * must return a match in ServerHello. This allows the normal
 557                  * client session ID matching to work.
 558                  */
 559                 if (ret->session_id_length == 0)
 560                         {
 561                         ret->session_id_length=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 562                         RAND_pseudo_bytes(ret->session_id,
 563                                                 ret->session_id_length);
 564                         }
 565 #endif
 566                 }
 567         else
 568                 ret->tlsext_tick=NULL;
 569 #endif /* OPENSSL_NO_TLSEXT */
 570
 571         M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
 572         }