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. If liftime hint is -1 treat as a special
 234                  * case because the session is being used as a container
 235                  */
 236                 if (in->tlsext_ticklen && (in->tlsext_tick_lifetime_hint != -1))
 237                         a.session_id.length=0;
 238                 }
 239         if (in->tlsext_tick_lifetime_hint > 0)
 240                 {
 241                 a.tlsext_tick_lifetime.length=LSIZE2;
 242                 a.tlsext_tick_lifetime.type=V_ASN1_INTEGER;
 243                 a.tlsext_tick_lifetime.data=ibuf6;
 244                 ASN1_INTEGER_set(&a.tlsext_tick_lifetime,in->tlsext_tick_lifetime_hint);
 245                 }
 246 #endif /* OPENSSL_NO_TLSEXT */
 247 #ifndef OPENSSL_NO_PSK
 248         if (in->psk_identity_hint)
 249                 {
 250                 a.psk_identity_hint.length=strlen(in->psk_identity_hint);
 251                 a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
 252                 a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
 253                 }
 254         if (in->psk_identity)
 255                 {
 256                 a.psk_identity.length=strlen(in->psk_identity);
 257                 a.psk_identity.type=V_ASN1_OCTET_STRING;
 258                 a.psk_identity.data=(unsigned char *)(in->psk_identity);
 259                 }
 260 #endif /* OPENSSL_NO_PSK */
 261
 262         M_ASN1_I2D_len(&(a.version),            i2d_ASN1_INTEGER);
 263         M_ASN1_I2D_len(&(a.ssl_version),        i2d_ASN1_INTEGER);
 264         M_ASN1_I2D_len(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 265         M_ASN1_I2D_len(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 266         M_ASN1_I2D_len(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 267 #ifndef OPENSSL_NO_KRB5
 268         if (in->krb5_client_princ_len)
 269                 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 270 #endif /* OPENSSL_NO_KRB5 */
 271         if (in->key_arg_length > 0)
 272                 M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
 273         if (in->time != 0L)
 274                 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 275         if (in->timeout != 0L)
 276                 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 277         if (in->peer != NULL)
 278                 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
 279         M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
 280         if (in->verify_result != X509_V_OK)
 281                 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
 282
 283 #ifndef OPENSSL_NO_TLSEXT
 284         if (in->tlsext_tick_lifetime_hint > 0)
 285                 M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 286         if (in->tlsext_tick)
 287                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 288         if (in->tlsext_hostname)
 289                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 290 #endif /* OPENSSL_NO_TLSEXT */
 291 #ifndef OPENSSL_NO_PSK
 292         if (in->psk_identity_hint)
 293                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 294         if (in->psk_identity)
 295                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 296 #endif /* OPENSSL_NO_PSK */
 297
 298         M_ASN1_I2D_seq_total();
 299
 300         M_ASN1_I2D_put(&(a.version),            i2d_ASN1_INTEGER);
 301         M_ASN1_I2D_put(&(a.ssl_version),        i2d_ASN1_INTEGER);
 302         M_ASN1_I2D_put(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 303         M_ASN1_I2D_put(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 304         M_ASN1_I2D_put(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 305 #ifndef OPENSSL_NO_KRB5
 306         if (in->krb5_client_princ_len)
 307                 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 308 #endif /* OPENSSL_NO_KRB5 */
 309         if (in->key_arg_length > 0)
 310                 M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
 311         if (in->time != 0L)
 312                 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 313         if (in->timeout != 0L)
 314                 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 315         if (in->peer != NULL)
 316                 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
 317         M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
 318                                v4);
 319         if (in->verify_result != X509_V_OK)
 320                 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
 321 #ifndef OPENSSL_NO_TLSEXT
 322         if (in->tlsext_hostname)
 323                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 324 #endif /* OPENSSL_NO_TLSEXT */
 325 #ifndef OPENSSL_NO_PSK
 326         if (in->psk_identity_hint)
 327                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 328         if (in->psk_identity)
 329                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 330 #endif /* OPENSSL_NO_PSK */
 331 #ifndef OPENSSL_NO_TLSEXT
 332         if (in->tlsext_tick_lifetime_hint > 0)
 333                 M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 334         if (in->tlsext_tick)
 335                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 336 #endif /* OPENSSL_NO_TLSEXT */
 337         M_ASN1_I2D_finish();
 338         }
 339
 340 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 341                              long length)
 342         {
 343         int version,ssl_version=0,i;
 344         long id;
 345         ASN1_INTEGER ai,*aip;
 346         ASN1_OCTET_STRING os,*osp;
 347         M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
 348
 349         aip= &ai;
 350         osp= &os;
 351
 352         M_ASN1_D2I_Init();
 353         M_ASN1_D2I_start_sequence();
 354
 355         ai.data=NULL; ai.length=0;
 356         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 357         version=(int)ASN1_INTEGER_get(aip);
 358         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 359
 360         /* we don't care about the version right now :-) */
 361         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 362         ssl_version=(int)ASN1_INTEGER_get(aip);
 363         ret->ssl_version=ssl_version;
 364         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 365
 366         os.data=NULL; os.length=0;
 367         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 368         if (ssl_version == SSL2_VERSION)
 369                 {
 370                 if (os.length != 3)
 371                         {
 372                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 373                         goto err;
 374                         }
 375                 id=0x02000000L|
 376                         ((unsigned long)os.data[0]<<16L)|
 377                         ((unsigned long)os.data[1]<< 8L)|
 378                          (unsigned long)os.data[2];
 379                 }
 380         else if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 381                 {
 382                 if (os.length != 2)
 383                         {
 384                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 385                         goto err;
 386                         }
 387                 id=0x03000000L|
 388                         ((unsigned long)os.data[0]<<8L)|
 389                          (unsigned long)os.data[1];
 390                 }
 391         else
 392                 {
 393                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_UNKNOWN_SSL_VERSION);
 394                 return(NULL);
 395                 }
 396
 397         ret->cipher=NULL;
 398         ret->cipher_id=id;
 399
 400         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 401         if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 402                 i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 403         else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
 404                 i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
 405
 406         if (os.length > i)
 407                 os.length = i;
 408         if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
 409                 os.length = sizeof(ret->session_id);
 410
 411         ret->session_id_length=os.length;
 412         OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
 413         memcpy(ret->session_id,os.data,os.length);
 414
 415         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 416         if (os.length > SSL_MAX_MASTER_KEY_LENGTH)
 417                 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
 418         else
 419                 ret->master_key_length=os.length;
 420         memcpy(ret->master_key,os.data,ret->master_key_length);
 421
 422         os.length=0;
 423
 424 #ifndef OPENSSL_NO_KRB5
 425         os.length=0;
 426         M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
 427         if (os.data)
 428                 {
 429                 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
 430                         ret->krb5_client_princ_len=0;
 431                 else
 432                         ret->krb5_client_princ_len=os.length;
 433                 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
 434                 OPENSSL_free(os.data);
 435                 os.data = NULL;
 436                 os.length = 0;
 437                 }
 438         else
 439                 ret->krb5_client_princ_len=0;
 440 #endif /* OPENSSL_NO_KRB5 */
 441
 442         M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
 443         if (os.length > SSL_MAX_KEY_ARG_LENGTH)
 444                 ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
 445         else
 446                 ret->key_arg_length=os.length;
 447         memcpy(ret->key_arg,os.data,ret->key_arg_length);
 448         if (os.data != NULL) OPENSSL_free(os.data);
 449
 450         ai.length=0;
 451         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
 452         if (ai.data != NULL)
 453                 {
 454                 ret->time=ASN1_INTEGER_get(aip);
 455                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 456                 }
 457         else
 458                 ret->time=(unsigned long)time(NULL);
 459
 460         ai.length=0;
 461         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
 462         if (ai.data != NULL)
 463                 {
 464                 ret->timeout=ASN1_INTEGER_get(aip);
 465                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 466                 }
 467         else
 468                 ret->timeout=3;
 469
 470         if (ret->peer != NULL)
 471                 {
 472                 X509_free(ret->peer);
 473                 ret->peer=NULL;
 474                 }
 475         M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
 476
 477         os.length=0;
 478         os.data=NULL;
 479         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
 480
 481         if(os.data != NULL)
 482             {
 483             if (os.length > SSL_MAX_SID_CTX_LENGTH)
 484                 {
 485                 ret->sid_ctx_length=os.length;
 486                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_BAD_LENGTH);
 487                 }
 488             else
 489                 {
 490                 ret->sid_ctx_length=os.length;
 491                 memcpy(ret->sid_ctx,os.data,os.length);
 492                 }
 493             OPENSSL_free(os.data); os.data=NULL; os.length=0;
 494             }
 495         else
 496             ret->sid_ctx_length=0;
 497
 498         ai.length=0;
 499         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
 500         if (ai.data != NULL)
 501                 {
 502                 ret->verify_result=ASN1_INTEGER_get(aip);
 503                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 504                 }
 505         else
 506                 ret->verify_result=X509_V_OK;
 507
 508 #ifndef OPENSSL_NO_TLSEXT
 509         os.length=0;
 510         os.data=NULL;
 511         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
 512         if (os.data)
 513                 {
 514                 ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
 515                 OPENSSL_free(os.data);
 516                 os.data = NULL;
 517                 os.length = 0;
 518                 }
 519         else
 520                 ret->tlsext_hostname=NULL;
 521 #endif /* OPENSSL_NO_TLSEXT */
 522
 523 #ifndef OPENSSL_NO_PSK
 524         os.length=0;
 525         os.data=NULL;
 526         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7);
 527         if (os.data)
 528                 {
 529                 ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length);
 530                 OPENSSL_free(os.data);
 531                 os.data = NULL;
 532                 os.length = 0;
 533                 }
 534         else
 535                 ret->psk_identity_hint=NULL;
 536 #endif /* OPENSSL_NO_PSK */
 537
 538 #ifndef OPENSSL_NO_TLSEXT
 539         ai.length=0;
 540         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,9);
 541         if (ai.data != NULL)
 542                 {
 543                 ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip);
 544                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 545                 }
 546         else if (ret->tlsext_ticklen && ret->session_id_length)
 547                 ret->tlsext_tick_lifetime_hint = -1;
 548         else
 549                 ret->tlsext_tick_lifetime_hint=0;
 550         os.length=0;
 551         os.data=NULL;
 552         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
 553         if (os.data)
 554                 {
 555                 ret->tlsext_tick = os.data;
 556                 ret->tlsext_ticklen = os.length;
 557                 os.data = NULL;
 558                 os.length = 0;
 559 #if 0
 560                 /* There are two ways to detect a resumed ticket sesion.
 561                  * One is to set a random session ID and then the server
 562                  * must return a match in ServerHello. This allows the normal
 563                  * client session ID matching to work.
 564                  */
 565                 if (ret->session_id_length == 0)
 566                         {
 567                         ret->session_id_length=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 568                         RAND_pseudo_bytes(ret->session_id,
 569                                                 ret->session_id_length);
 570                         }
 571 #endif
 572                 }
 573         else
 574                 ret->tlsext_tick=NULL;
 575 #endif /* OPENSSL_NO_TLSEXT */
 576
 577         M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
 578         }