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 #endif /* OPENSSL_NO_TLSEXT */
 110 #ifndef OPENSSL_NO_PSK
 111         ASN1_OCTET_STRING psk_identity_hint;
 112         ASN1_OCTET_STRING psk_identity;
 113 #endif /* OPENSSL_NO_PSK */
 114         } SSL_SESSION_ASN1;
 115
 116 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
 117         {
 118 #define LSIZE2 (sizeof(long)*2)
 119         int v1=0,v2=0,v3=0,v4=0,v5=0,v6=0,v7=0,v8=0;
 120         unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
 121         unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
 122         long l;
 123         SSL_SESSION_ASN1 a;
 124         M_ASN1_I2D_vars(in);
 125
 126         if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
 127                 return(0);
 128
 129         /* Note that I cheat in the following 2 assignments.  I know
 130          * that if the ASN1_INTEGER passed to ASN1_INTEGER_set
 131          * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
 132          * This is a bit evil but makes things simple, no dynamic allocation
 133          * to clean up :-) */
 134         a.version.length=LSIZE2;
 135         a.version.type=V_ASN1_INTEGER;
 136         a.version.data=ibuf1;
 137         ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
 138
 139         a.ssl_version.length=LSIZE2;
 140         a.ssl_version.type=V_ASN1_INTEGER;
 141         a.ssl_version.data=ibuf2;
 142         ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
 143
 144         a.cipher.type=V_ASN1_OCTET_STRING;
 145         a.cipher.data=buf;
 146
 147         if (in->cipher == NULL)
 148                 l=in->cipher_id;
 149         else
 150                 l=in->cipher->id;
 151         if (in->ssl_version == SSL2_VERSION)
 152                 {
 153                 a.cipher.length=3;
 154                 buf[0]=((unsigned char)(l>>16L))&0xff;
 155                 buf[1]=((unsigned char)(l>> 8L))&0xff;
 156                 buf[2]=((unsigned char)(l     ))&0xff;
 157                 }
 158         else
 159                 {
 160                 a.cipher.length=2;
 161                 buf[0]=((unsigned char)(l>>8L))&0xff;
 162                 buf[1]=((unsigned char)(l    ))&0xff;
 163                 }
 164
 165         a.master_key.length=in->master_key_length;
 166         a.master_key.type=V_ASN1_OCTET_STRING;
 167         a.master_key.data=in->master_key;
 168
 169         a.session_id.length=in->session_id_length;
 170         a.session_id.type=V_ASN1_OCTET_STRING;
 171         a.session_id.data=in->session_id;
 172
 173         a.session_id_context.length=in->sid_ctx_length;
 174         a.session_id_context.type=V_ASN1_OCTET_STRING;
 175         a.session_id_context.data=in->sid_ctx;
 176
 177         a.key_arg.length=in->key_arg_length;
 178         a.key_arg.type=V_ASN1_OCTET_STRING;
 179         a.key_arg.data=in->key_arg;
 180
 181 #ifndef OPENSSL_NO_KRB5
 182         if (in->krb5_client_princ_len)
 183                 {
 184                 a.krb5_princ.length=in->krb5_client_princ_len;
 185                 a.krb5_princ.type=V_ASN1_OCTET_STRING;
 186                 a.krb5_princ.data=in->krb5_client_princ;
 187                 }
 188 #endif /* OPENSSL_NO_KRB5 */
 189
 190         if (in->time != 0L)
 191                 {
 192                 a.time.length=LSIZE2;
 193                 a.time.type=V_ASN1_INTEGER;
 194                 a.time.data=ibuf3;
 195                 ASN1_INTEGER_set(&(a.time),in->time);
 196                 }
 197
 198         if (in->timeout != 0L)
 199                 {
 200                 a.timeout.length=LSIZE2;
 201                 a.timeout.type=V_ASN1_INTEGER;
 202                 a.timeout.data=ibuf4;
 203                 ASN1_INTEGER_set(&(a.timeout),in->timeout);
 204                 }
 205
 206         if (in->verify_result != X509_V_OK)
 207                 {
 208                 a.verify_result.length=LSIZE2;
 209                 a.verify_result.type=V_ASN1_INTEGER;
 210                 a.verify_result.data=ibuf5;
 211                 ASN1_INTEGER_set(&a.verify_result,in->verify_result);
 212                 }
 213
 214 #ifndef OPENSSL_NO_TLSEXT
 215         if (in->tlsext_hostname)
 216                 {
 217                 a.tlsext_hostname.length=strlen(in->tlsext_hostname);
 218                 a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
 219                 a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
 220                 }
 221 #endif /* OPENSSL_NO_TLSEXT */
 222 #ifndef OPENSSL_NO_PSK
 223         if (in->psk_identity_hint)
 224                 {
 225                 a.psk_identity_hint.length=strlen(in->psk_identity_hint);
 226                 a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
 227                 a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
 228                 }
 229         if (in->psk_identity)
 230                 {
 231                 a.psk_identity.length=strlen(in->psk_identity);
 232                 a.psk_identity.type=V_ASN1_OCTET_STRING;
 233                 a.psk_identity.data=(unsigned char *)(in->psk_identity);
 234                 }
 235 #endif /* OPENSSL_NO_PSK */
 236
 237         M_ASN1_I2D_len(&(a.version),            i2d_ASN1_INTEGER);
 238         M_ASN1_I2D_len(&(a.ssl_version),        i2d_ASN1_INTEGER);
 239         M_ASN1_I2D_len(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 240         M_ASN1_I2D_len(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 241         M_ASN1_I2D_len(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 242 #ifndef OPENSSL_NO_KRB5
 243         if (in->krb5_client_princ_len)
 244                 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 245 #endif /* OPENSSL_NO_KRB5 */
 246         if (in->key_arg_length > 0)
 247                 M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
 248         if (in->time != 0L)
 249                 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 250         if (in->timeout != 0L)
 251                 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 252         if (in->peer != NULL)
 253                 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
 254         M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
 255         if (in->verify_result != X509_V_OK)
 256                 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
 257
 258 #ifndef OPENSSL_NO_TLSEXT
 259         if (in->tlsext_hostname)
 260                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 261 #endif /* OPENSSL_NO_TLSEXT */
 262 #ifndef OPENSSL_NO_PSK
 263         if (in->psk_identity_hint)
 264                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 265         if (in->psk_identity)
 266                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 267 #endif /* OPENSSL_NO_PSK */
 268
 269         M_ASN1_I2D_seq_total();
 270
 271         M_ASN1_I2D_put(&(a.version),            i2d_ASN1_INTEGER);
 272         M_ASN1_I2D_put(&(a.ssl_version),        i2d_ASN1_INTEGER);
 273         M_ASN1_I2D_put(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 274         M_ASN1_I2D_put(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 275         M_ASN1_I2D_put(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 276 #ifndef OPENSSL_NO_KRB5
 277         if (in->krb5_client_princ_len)
 278                 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 279 #endif /* OPENSSL_NO_KRB5 */
 280         if (in->key_arg_length > 0)
 281                 M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
 282         if (in->time != 0L)
 283                 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 284         if (in->timeout != 0L)
 285                 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 286         if (in->peer != NULL)
 287                 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
 288         M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
 289                                v4);
 290         if (in->verify_result != X509_V_OK)
 291                 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
 292 #ifndef OPENSSL_NO_TLSEXT
 293         if (in->tlsext_hostname)
 294                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 295 #endif /* OPENSSL_NO_TLSEXT */
 296 #ifndef OPENSSL_NO_PSK
 297         if (in->psk_identity_hint)
 298                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 299         if (in->psk_identity)
 300                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 301 #endif /* OPENSSL_NO_PSK */
 302         M_ASN1_I2D_finish();
 303         }
 304
 305 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 306              long length)
 307         {
 308         int version,ssl_version=0,i;
 309         long id;
 310         ASN1_INTEGER ai,*aip;
 311         ASN1_OCTET_STRING os,*osp;
 312         M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
 313
 314         aip= &ai;
 315         osp= &os;
 316
 317         M_ASN1_D2I_Init();
 318         M_ASN1_D2I_start_sequence();
 319
 320         ai.data=NULL; ai.length=0;
 321         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 322         version=(int)ASN1_INTEGER_get(aip);
 323         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 324
 325         /* we don't care about the version right now :-) */
 326         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 327         ssl_version=(int)ASN1_INTEGER_get(aip);
 328         ret->ssl_version=ssl_version;
 329         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 330
 331         os.data=NULL; os.length=0;
 332         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 333         if (ssl_version == SSL2_VERSION)
 334                 {
 335                 if (os.length != 3)
 336                         {
 337                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 338                         goto err;
 339                         }
 340                 id=0x02000000L|
 341                         ((unsigned long)os.data[0]<<16L)|
 342                         ((unsigned long)os.data[1]<< 8L)|
 343                          (unsigned long)os.data[2];
 344                 }
 345         else if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 346                 {
 347                 if (os.length != 2)
 348                         {
 349                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 350                         goto err;
 351                         }
 352                 id=0x03000000L|
 353                         ((unsigned long)os.data[0]<<8L)|
 354                          (unsigned long)os.data[1];
 355                 }
 356         else
 357                 {
 358                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_UNKNOWN_SSL_VERSION);
 359                 return(NULL);
 360                 }
 361
 362         ret->cipher=NULL;
 363         ret->cipher_id=id;
 364
 365         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 366         if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 367                 i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 368         else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
 369                 i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
 370
 371         if (os.length > i)
 372                 os.length = i;
 373         if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
 374                 os.length = sizeof(ret->session_id);
 375
 376         ret->session_id_length=os.length;
 377         OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
 378         memcpy(ret->session_id,os.data,os.length);
 379
 380         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 381         if (ret->master_key_length > SSL_MAX_MASTER_KEY_LENGTH)
 382                 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
 383         else
 384                 ret->master_key_length=os.length;
 385         memcpy(ret->master_key,os.data,ret->master_key_length);
 386
 387         os.length=0;
 388
 389 #ifndef OPENSSL_NO_KRB5
 390         os.length=0;
 391         M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
 392         if (os.data)
 393                 {
 394                 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
 395                         ret->krb5_client_princ_len=0;
 396                 else
 397                         ret->krb5_client_princ_len=os.length;
 398                 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
 399                 OPENSSL_free(os.data);
 400                 os.data = NULL;
 401                 os.length = 0;
 402                 }
 403         else
 404                 ret->krb5_client_princ_len=0;
 405 #endif /* OPENSSL_NO_KRB5 */
 406
 407         M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
 408         if (os.length > SSL_MAX_KEY_ARG_LENGTH)
 409                 ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
 410         else
 411                 ret->key_arg_length=os.length;
 412         memcpy(ret->key_arg,os.data,ret->key_arg_length);
 413         if (os.data != NULL) OPENSSL_free(os.data);
 414
 415         ai.length=0;
 416         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
 417         if (ai.data != NULL)
 418                 {
 419                 ret->time=ASN1_INTEGER_get(aip);
 420                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 421                 }
 422         else
 423                 ret->time=(unsigned long)time(NULL);
 424
 425         ai.length=0;
 426         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
 427         if (ai.data != NULL)
 428                 {
 429                 ret->timeout=ASN1_INTEGER_get(aip);
 430                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 431                 }
 432         else
 433                 ret->timeout=3;
 434
 435         if (ret->peer != NULL)
 436                 {
 437                 X509_free(ret->peer);
 438                 ret->peer=NULL;
 439                 }
 440         M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
 441
 442         os.length=0;
 443         os.data=NULL;
 444         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
 445
 446         if(os.data != NULL)
 447             {
 448             if (os.length > SSL_MAX_SID_CTX_LENGTH)
 449                 {
 450                 ret->sid_ctx_length=os.length;
 451                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_BAD_LENGTH);
 452                 }
 453             else
 454                 {
 455                 ret->sid_ctx_length=os.length;
 456                 memcpy(ret->sid_ctx,os.data,os.length);
 457                 }
 458             OPENSSL_free(os.data); os.data=NULL; os.length=0;
 459             }
 460         else
 461             ret->sid_ctx_length=0;
 462
 463         ai.length=0;
 464         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
 465         if (ai.data != NULL)
 466                 {
 467                 ret->verify_result=ASN1_INTEGER_get(aip);
 468                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 469                 }
 470         else
 471                 ret->verify_result=X509_V_OK;
 472
 473 #ifndef OPENSSL_NO_TLSEXT
 474         os.length=0;
 475         os.data=NULL;
 476         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
 477         if (os.data)
 478                 {
 479                 ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
 480                 OPENSSL_free(os.data);
 481                 os.data = NULL;
 482                 os.length = 0;
 483                 }
 484         else
 485                 ret->tlsext_hostname=NULL;
 486 #endif /* OPENSSL_NO_TLSEXT */
 487
 488 #ifndef OPENSSL_NO_PSK
 489         os.length=0;
 490         os.data=NULL;
 491         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,9);
 492         if (os.data)
 493                 {
 494                 ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length);
 495                 OPENSSL_free(os.data);
 496                 os.data = NULL;
 497                 os.length = 0;
 498                 }
 499         else
 500                 ret->psk_identity_hint=NULL;
 501
 502         os.length=0;
 503         os.data=NULL;
 504         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
 505         if (os.data)
 506                 {
 507                 ret->psk_identity = BUF_strndup((char *)os.data, os.length);
 508                 OPENSSL_free(os.data);
 509                 os.data = NULL;
 510                 os.length = 0;
 511                 }
 512         else
 513                 ret->psk_identity=NULL;
 514 #endif /* OPENSSL_NO_KRB5 */
 515
 516         M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
 517         }