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 #ifndef OPENSSL_NO_EC
 110         ASN1_OCTET_STRING tlsext_ecpointformatlist;
 111 #endif /* OPENSSL_NO_EC */
 112 #endif /* OPENSSL_NO_TLSEXT */
 113 #ifndef OPENSSL_NO_PSK
 114         ASN1_OCTET_STRING psk_identity_hint;
 115         ASN1_OCTET_STRING psk_identity;
 116 #endif /* OPENSSL_NO_PSK */
 117         } SSL_SESSION_ASN1;
 118
 119 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
 120         {
 121 #define LSIZE2 (sizeof(long)*2)
 122         int v1=0,v2=0,v3=0,v4=0,v5=0,v6=0,v7=0,v8=0,v9=0;
 123         unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
 124         unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[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 #ifndef OPENSSL_NO_EC
 225         if (in->tlsext_ecpointformatlist)
 226                 {
 227                 a.tlsext_ecpointformatlist.length=in->tlsext_ecpointformatlist_length;
 228                 a.tlsext_ecpointformatlist.type=V_ASN1_OCTET_STRING;
 229                 a.tlsext_ecpointformatlist.data=(unsigned char *)in->tlsext_ecpointformatlist;
 230                 }
 231 #endif /* OPENSSL_NO_EC */
 232 #endif /* OPENSSL_NO_TLSEXT */
 233 #ifndef OPENSSL_NO_PSK
 234         if (in->psk_identity_hint)
 235                 {
 236                 a.psk_identity_hint.length=strlen(in->psk_identity_hint);
 237                 a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
 238                 a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
 239                 }
 240         if (in->psk_identity)
 241                 {
 242                 a.psk_identity.length=strlen(in->psk_identity);
 243                 a.psk_identity.type=V_ASN1_OCTET_STRING;
 244                 a.psk_identity.data=(unsigned char *)(in->psk_identity);
 245                 }
 246 #endif /* OPENSSL_NO_PSK */
 247
 248         M_ASN1_I2D_len(&(a.version),            i2d_ASN1_INTEGER);
 249         M_ASN1_I2D_len(&(a.ssl_version),        i2d_ASN1_INTEGER);
 250         M_ASN1_I2D_len(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 251         M_ASN1_I2D_len(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 252         M_ASN1_I2D_len(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 253 #ifndef OPENSSL_NO_KRB5
 254         if (in->krb5_client_princ_len)
 255                 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 256 #endif /* OPENSSL_NO_KRB5 */
 257         if (in->key_arg_length > 0)
 258                 M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
 259         if (in->time != 0L)
 260                 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 261         if (in->timeout != 0L)
 262                 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 263         if (in->peer != NULL)
 264                 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
 265         M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
 266         if (in->verify_result != X509_V_OK)
 267                 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
 268
 269 #ifndef OPENSSL_NO_TLSEXT
 270         if (in->tlsext_hostname)
 271                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 272 #ifndef OPENSSL_NO_EC
 273         if (in->tlsext_ecpointformatlist)
 274                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_ecpointformatlist), i2d_ASN1_OCTET_STRING,7,v7);
 275 #endif /* OPENSSL_NO_EC */
 276 #endif /* OPENSSL_NO_TLSEXT */
 277 #ifndef OPENSSL_NO_PSK
 278         if (in->psk_identity_hint)
 279                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,8,v8);
 280         if (in->psk_identity)
 281                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,9,v9);
 282 #endif /* OPENSSL_NO_PSK */
 283
 284         M_ASN1_I2D_seq_total();
 285
 286         M_ASN1_I2D_put(&(a.version),            i2d_ASN1_INTEGER);
 287         M_ASN1_I2D_put(&(a.ssl_version),        i2d_ASN1_INTEGER);
 288         M_ASN1_I2D_put(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 289         M_ASN1_I2D_put(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 290         M_ASN1_I2D_put(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 291 #ifndef OPENSSL_NO_KRB5
 292         if (in->krb5_client_princ_len)
 293                 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 294 #endif /* OPENSSL_NO_KRB5 */
 295         if (in->key_arg_length > 0)
 296                 M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
 297         if (in->time != 0L)
 298                 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 299         if (in->timeout != 0L)
 300                 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 301         if (in->peer != NULL)
 302                 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
 303         M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
 304                                v4);
 305         if (in->verify_result != X509_V_OK)
 306                 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
 307 #ifndef OPENSSL_NO_TLSEXT
 308         if (in->tlsext_hostname)
 309                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 310 #ifndef OPENSSL_NO_EC
 311         if (in->tlsext_ecpointformatlist)
 312                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_ecpointformatlist), i2d_ASN1_OCTET_STRING,7,v7);
 313 #endif /* OPENSSL_NO_EC */
 314 #endif /* OPENSSL_NO_TLSEXT */
 315 #ifndef OPENSSL_NO_PSK
 316         if (in->psk_identity_hint)
 317                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,8,v8);
 318         if (in->psk_identity)
 319                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,9,v9);
 320 #endif /* OPENSSL_NO_PSK */
 321         M_ASN1_I2D_finish();
 322         }
 323
 324 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 325              long length)
 326         {
 327         int version,ssl_version=0,i;
 328         long id;
 329         ASN1_INTEGER ai,*aip;
 330         ASN1_OCTET_STRING os,*osp;
 331         M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
 332
 333         aip= &ai;
 334         osp= &os;
 335
 336         M_ASN1_D2I_Init();
 337         M_ASN1_D2I_start_sequence();
 338
 339         ai.data=NULL; ai.length=0;
 340         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 341         version=(int)ASN1_INTEGER_get(aip);
 342         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 343
 344         /* we don't care about the version right now :-) */
 345         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 346         ssl_version=(int)ASN1_INTEGER_get(aip);
 347         ret->ssl_version=ssl_version;
 348         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 349
 350         os.data=NULL; os.length=0;
 351         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 352         if (ssl_version == SSL2_VERSION)
 353                 {
 354                 if (os.length != 3)
 355                         {
 356                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 357                         goto err;
 358                         }
 359                 id=0x02000000L|
 360                         ((unsigned long)os.data[0]<<16L)|
 361                         ((unsigned long)os.data[1]<< 8L)|
 362                          (unsigned long)os.data[2];
 363                 }
 364         else if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 365                 {
 366                 if (os.length != 2)
 367                         {
 368                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 369                         goto err;
 370                         }
 371                 id=0x03000000L|
 372                         ((unsigned long)os.data[0]<<8L)|
 373                          (unsigned long)os.data[1];
 374                 }
 375         else
 376                 {
 377                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_UNKNOWN_SSL_VERSION);
 378                 return(NULL);
 379                 }
 380
 381         ret->cipher=NULL;
 382         ret->cipher_id=id;
 383
 384         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 385         if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 386                 i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 387         else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
 388                 i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
 389
 390         if (os.length > i)
 391                 os.length = i;
 392         if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
 393                 os.length = sizeof(ret->session_id);
 394
 395         ret->session_id_length=os.length;
 396         OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
 397         memcpy(ret->session_id,os.data,os.length);
 398
 399         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 400         if (ret->master_key_length > SSL_MAX_MASTER_KEY_LENGTH)
 401                 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
 402         else
 403                 ret->master_key_length=os.length;
 404         memcpy(ret->master_key,os.data,ret->master_key_length);
 405
 406         os.length=0;
 407
 408 #ifndef OPENSSL_NO_KRB5
 409         os.length=0;
 410         M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
 411         if (os.data)
 412                 {
 413                 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
 414                         ret->krb5_client_princ_len=0;
 415                 else
 416                         ret->krb5_client_princ_len=os.length;
 417                 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
 418                 OPENSSL_free(os.data);
 419                 os.data = NULL;
 420                 os.length = 0;
 421                 }
 422         else
 423                 ret->krb5_client_princ_len=0;
 424 #endif /* OPENSSL_NO_KRB5 */
 425
 426         M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
 427         if (os.length > SSL_MAX_KEY_ARG_LENGTH)
 428                 ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
 429         else
 430                 ret->key_arg_length=os.length;
 431         memcpy(ret->key_arg,os.data,ret->key_arg_length);
 432         if (os.data != NULL) OPENSSL_free(os.data);
 433
 434         ai.length=0;
 435         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
 436         if (ai.data != NULL)
 437                 {
 438                 ret->time=ASN1_INTEGER_get(aip);
 439                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 440                 }
 441         else
 442                 ret->time=(unsigned long)time(NULL);
 443
 444         ai.length=0;
 445         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
 446         if (ai.data != NULL)
 447                 {
 448                 ret->timeout=ASN1_INTEGER_get(aip);
 449                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 450                 }
 451         else
 452                 ret->timeout=3;
 453
 454         if (ret->peer != NULL)
 455                 {
 456                 X509_free(ret->peer);
 457                 ret->peer=NULL;
 458                 }
 459         M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
 460
 461         os.length=0;
 462         os.data=NULL;
 463         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
 464
 465         if(os.data != NULL)
 466             {
 467             if (os.length > SSL_MAX_SID_CTX_LENGTH)
 468                 {
 469                 ret->sid_ctx_length=os.length;
 470                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_BAD_LENGTH);
 471                 }
 472             else
 473                 {
 474                 ret->sid_ctx_length=os.length;
 475                 memcpy(ret->sid_ctx,os.data,os.length);
 476                 }
 477             OPENSSL_free(os.data); os.data=NULL; os.length=0;
 478             }
 479         else
 480             ret->sid_ctx_length=0;
 481
 482         ai.length=0;
 483         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
 484         if (ai.data != NULL)
 485                 {
 486                 ret->verify_result=ASN1_INTEGER_get(aip);
 487                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 488                 }
 489         else
 490                 ret->verify_result=X509_V_OK;
 491
 492 #ifndef OPENSSL_NO_TLSEXT
 493         os.length=0;
 494         os.data=NULL;
 495         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
 496         if (os.data)
 497                 {
 498                 ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
 499                 OPENSSL_free(os.data);
 500                 os.data = NULL;
 501                 os.length = 0;
 502                 }
 503         else
 504                 ret->tlsext_hostname=NULL;
 505
 506 #ifndef OPENSSL_NO_EC
 507         os.length=0;
 508         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7);
 509         if (os.data)
 510                 {
 511                 ret->tlsext_ecpointformatlist_length=os.length;
 512                 memcpy(ret->tlsext_ecpointformatlist,os.data,ret->tlsext_ecpointformatlist_length);
 513                 OPENSSL_free(os.data);
 514                 os.data = NULL;
 515                 os.length = 0;
 516                 }
 517         else
 518                 ret->tlsext_ecpointformatlist_length=0;
 519                 ret->tlsext_ecpointformatlist=NULL;
 520 #endif /* OPENSSL_NO_EC */
 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,8);
 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
 537         os.length=0;
 538         os.data=NULL;
 539         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,9);
 540         if (os.data)
 541                 {
 542                 ret->psk_identity = BUF_strndup((char *)os.data, os.length);
 543                 OPENSSL_free(os.data);
 544                 os.data = NULL;
 545                 os.length = 0;
 546                 }
 547         else
 548                 ret->psk_identity=NULL;
 549 #endif /* OPENSSL_NO_KRB5 */
 550
 551         M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
 552         }