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         ASN1_OCTET_STRING tlsext_ellipticcurvelist;
 112 #endif /* OPENSSL_NO_EC */
 113 #endif /* OPENSSL_NO_TLSEXT */
 114 #ifndef OPENSSL_NO_PSK
 115         ASN1_OCTET_STRING psk_identity_hint;
 116         ASN1_OCTET_STRING psk_identity;
 117 #endif /* OPENSSL_NO_PSK */
 118         } SSL_SESSION_ASN1;
 119
 120 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
 121         {
 122 #define LSIZE2 (sizeof(long)*2)
 123         int v1=0,v2=0,v3=0,v4=0,v5=0,v6=0,v7=0,v8=0,v9=0,v10=0;
 124         unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
 125         unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
 126         long l;
 127         SSL_SESSION_ASN1 a;
 128         M_ASN1_I2D_vars(in);
 129
 130         if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
 131                 return(0);
 132
 133         /* Note that I cheat in the following 2 assignments.  I know
 134          * that if the ASN1_INTEGER passed to ASN1_INTEGER_set
 135          * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
 136          * This is a bit evil but makes things simple, no dynamic allocation
 137          * to clean up :-) */
 138         a.version.length=LSIZE2;
 139         a.version.type=V_ASN1_INTEGER;
 140         a.version.data=ibuf1;
 141         ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
 142
 143         a.ssl_version.length=LSIZE2;
 144         a.ssl_version.type=V_ASN1_INTEGER;
 145         a.ssl_version.data=ibuf2;
 146         ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
 147
 148         a.cipher.type=V_ASN1_OCTET_STRING;
 149         a.cipher.data=buf;
 150
 151         if (in->cipher == NULL)
 152                 l=in->cipher_id;
 153         else
 154                 l=in->cipher->id;
 155         if (in->ssl_version == SSL2_VERSION)
 156                 {
 157                 a.cipher.length=3;
 158                 buf[0]=((unsigned char)(l>>16L))&0xff;
 159                 buf[1]=((unsigned char)(l>> 8L))&0xff;
 160                 buf[2]=((unsigned char)(l     ))&0xff;
 161                 }
 162         else
 163                 {
 164                 a.cipher.length=2;
 165                 buf[0]=((unsigned char)(l>>8L))&0xff;
 166                 buf[1]=((unsigned char)(l    ))&0xff;
 167                 }
 168
 169         a.master_key.length=in->master_key_length;
 170         a.master_key.type=V_ASN1_OCTET_STRING;
 171         a.master_key.data=in->master_key;
 172
 173         a.session_id.length=in->session_id_length;
 174         a.session_id.type=V_ASN1_OCTET_STRING;
 175         a.session_id.data=in->session_id;
 176
 177         a.session_id_context.length=in->sid_ctx_length;
 178         a.session_id_context.type=V_ASN1_OCTET_STRING;
 179         a.session_id_context.data=in->sid_ctx;
 180
 181         a.key_arg.length=in->key_arg_length;
 182         a.key_arg.type=V_ASN1_OCTET_STRING;
 183         a.key_arg.data=in->key_arg;
 184
 185 #ifndef OPENSSL_NO_KRB5
 186         if (in->krb5_client_princ_len)
 187                 {
 188                 a.krb5_princ.length=in->krb5_client_princ_len;
 189                 a.krb5_princ.type=V_ASN1_OCTET_STRING;
 190                 a.krb5_princ.data=in->krb5_client_princ;
 191                 }
 192 #endif /* OPENSSL_NO_KRB5 */
 193
 194         if (in->time != 0L)
 195                 {
 196                 a.time.length=LSIZE2;
 197                 a.time.type=V_ASN1_INTEGER;
 198                 a.time.data=ibuf3;
 199                 ASN1_INTEGER_set(&(a.time),in->time);
 200                 }
 201
 202         if (in->timeout != 0L)
 203                 {
 204                 a.timeout.length=LSIZE2;
 205                 a.timeout.type=V_ASN1_INTEGER;
 206                 a.timeout.data=ibuf4;
 207                 ASN1_INTEGER_set(&(a.timeout),in->timeout);
 208                 }
 209
 210         if (in->verify_result != X509_V_OK)
 211                 {
 212                 a.verify_result.length=LSIZE2;
 213                 a.verify_result.type=V_ASN1_INTEGER;
 214                 a.verify_result.data=ibuf5;
 215                 ASN1_INTEGER_set(&a.verify_result,in->verify_result);
 216                 }
 217
 218 #ifndef OPENSSL_NO_TLSEXT
 219         if (in->tlsext_hostname)
 220                 {
 221                 a.tlsext_hostname.length=strlen(in->tlsext_hostname);
 222                 a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
 223                 a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
 224                 }
 225 #ifndef OPENSSL_NO_EC
 226         if (in->tlsext_ecpointformatlist)
 227                 {
 228                 a.tlsext_ecpointformatlist.length=in->tlsext_ecpointformatlist_length;
 229                 a.tlsext_ecpointformatlist.type=V_ASN1_OCTET_STRING;
 230                 a.tlsext_ecpointformatlist.data=(unsigned char *)in->tlsext_ecpointformatlist;
 231                 }
 232         if (in->tlsext_ellipticcurvelist)
 233                 {
 234                 a.tlsext_ellipticcurvelist.length=in->tlsext_ellipticcurvelist_length;
 235                 a.tlsext_ellipticcurvelist.type=V_ASN1_OCTET_STRING;
 236                 a.tlsext_ellipticcurvelist.data=(unsigned char *)in->tlsext_ellipticcurvelist;
 237                 }
 238 #endif /* OPENSSL_NO_EC */
 239 #endif /* OPENSSL_NO_TLSEXT */
 240 #ifndef OPENSSL_NO_PSK
 241         if (in->psk_identity_hint)
 242                 {
 243                 a.psk_identity_hint.length=strlen(in->psk_identity_hint);
 244                 a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
 245                 a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
 246                 }
 247         if (in->psk_identity)
 248                 {
 249                 a.psk_identity.length=strlen(in->psk_identity);
 250                 a.psk_identity.type=V_ASN1_OCTET_STRING;
 251                 a.psk_identity.data=(unsigned char *)(in->psk_identity);
 252                 }
 253 #endif /* OPENSSL_NO_PSK */
 254
 255         M_ASN1_I2D_len(&(a.version),            i2d_ASN1_INTEGER);
 256         M_ASN1_I2D_len(&(a.ssl_version),        i2d_ASN1_INTEGER);
 257         M_ASN1_I2D_len(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 258         M_ASN1_I2D_len(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 259         M_ASN1_I2D_len(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 260 #ifndef OPENSSL_NO_KRB5
 261         if (in->krb5_client_princ_len)
 262                 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 263 #endif /* OPENSSL_NO_KRB5 */
 264         if (in->key_arg_length > 0)
 265                 M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
 266         if (in->time != 0L)
 267                 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 268         if (in->timeout != 0L)
 269                 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 270         if (in->peer != NULL)
 271                 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
 272         M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
 273         if (in->verify_result != X509_V_OK)
 274                 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
 275
 276 #ifndef OPENSSL_NO_TLSEXT
 277         if (in->tlsext_hostname)
 278                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 279 #ifndef OPENSSL_NO_EC
 280         if (in->tlsext_ecpointformatlist)
 281                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_ecpointformatlist), i2d_ASN1_OCTET_STRING,7,v7);
 282         if (in->tlsext_ellipticcurvelist)
 283                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_ellipticcurvelist), i2d_ASN1_OCTET_STRING,8,v8);
 284 #endif /* OPENSSL_NO_EC */
 285 #endif /* OPENSSL_NO_TLSEXT */
 286 #ifndef OPENSSL_NO_PSK
 287         if (in->psk_identity_hint)
 288                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,9,v9);
 289         if (in->psk_identity)
 290                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,10,v10);
 291 #endif /* OPENSSL_NO_PSK */
 292
 293         M_ASN1_I2D_seq_total();
 294
 295         M_ASN1_I2D_put(&(a.version),            i2d_ASN1_INTEGER);
 296         M_ASN1_I2D_put(&(a.ssl_version),        i2d_ASN1_INTEGER);
 297         M_ASN1_I2D_put(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 298         M_ASN1_I2D_put(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 299         M_ASN1_I2D_put(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 300 #ifndef OPENSSL_NO_KRB5
 301         if (in->krb5_client_princ_len)
 302                 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 303 #endif /* OPENSSL_NO_KRB5 */
 304         if (in->key_arg_length > 0)
 305                 M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
 306         if (in->time != 0L)
 307                 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 308         if (in->timeout != 0L)
 309                 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 310         if (in->peer != NULL)
 311                 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
 312         M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
 313                                v4);
 314         if (in->verify_result != X509_V_OK)
 315                 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
 316 #ifndef OPENSSL_NO_TLSEXT
 317         if (in->tlsext_hostname)
 318                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 319 #ifndef OPENSSL_NO_EC
 320         if (in->tlsext_ecpointformatlist)
 321                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_ecpointformatlist), i2d_ASN1_OCTET_STRING,7,v7);
 322         if (in->tlsext_ellipticcurvelist)
 323                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_ellipticcurvelist), i2d_ASN1_OCTET_STRING,8,v8);
 324 #endif /* OPENSSL_NO_EC */
 325 #endif /* OPENSSL_NO_TLSEXT */
 326 #ifndef OPENSSL_NO_PSK
 327         if (in->psk_identity_hint)
 328                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,9,v9);
 329         if (in->psk_identity)
 330                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,10,v10);
 331 #endif /* OPENSSL_NO_PSK */
 332         M_ASN1_I2D_finish();
 333         }
 334
 335 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 336              long length)
 337         {
 338         int version,ssl_version=0,i;
 339         long id;
 340         ASN1_INTEGER ai,*aip;
 341         ASN1_OCTET_STRING os,*osp;
 342         M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
 343
 344         aip= &ai;
 345         osp= &os;
 346
 347         M_ASN1_D2I_Init();
 348         M_ASN1_D2I_start_sequence();
 349
 350         ai.data=NULL; ai.length=0;
 351         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 352         version=(int)ASN1_INTEGER_get(aip);
 353         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 354
 355         /* we don't care about the version right now :-) */
 356         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 357         ssl_version=(int)ASN1_INTEGER_get(aip);
 358         ret->ssl_version=ssl_version;
 359         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 360
 361         os.data=NULL; os.length=0;
 362         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 363         if (ssl_version == SSL2_VERSION)
 364                 {
 365                 if (os.length != 3)
 366                         {
 367                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 368                         goto err;
 369                         }
 370                 id=0x02000000L|
 371                         ((unsigned long)os.data[0]<<16L)|
 372                         ((unsigned long)os.data[1]<< 8L)|
 373                          (unsigned long)os.data[2];
 374                 }
 375         else if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 376                 {
 377                 if (os.length != 2)
 378                         {
 379                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 380                         goto err;
 381                         }
 382                 id=0x03000000L|
 383                         ((unsigned long)os.data[0]<<8L)|
 384                          (unsigned long)os.data[1];
 385                 }
 386         else
 387                 {
 388                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_UNKNOWN_SSL_VERSION);
 389                 return(NULL);
 390                 }
 391
 392         ret->cipher=NULL;
 393         ret->cipher_id=id;
 394
 395         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 396         if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 397                 i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 398         else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
 399                 i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
 400
 401         if (os.length > i)
 402                 os.length = i;
 403         if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
 404                 os.length = sizeof(ret->session_id);
 405
 406         ret->session_id_length=os.length;
 407         OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
 408         memcpy(ret->session_id,os.data,os.length);
 409
 410         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 411         if (ret->master_key_length > SSL_MAX_MASTER_KEY_LENGTH)
 412                 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
 413         else
 414                 ret->master_key_length=os.length;
 415         memcpy(ret->master_key,os.data,ret->master_key_length);
 416
 417         os.length=0;
 418
 419 #ifndef OPENSSL_NO_KRB5
 420         os.length=0;
 421         M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
 422         if (os.data)
 423                 {
 424                 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
 425                         ret->krb5_client_princ_len=0;
 426                 else
 427                         ret->krb5_client_princ_len=os.length;
 428                 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
 429                 OPENSSL_free(os.data);
 430                 os.data = NULL;
 431                 os.length = 0;
 432                 }
 433         else
 434                 ret->krb5_client_princ_len=0;
 435 #endif /* OPENSSL_NO_KRB5 */
 436
 437         M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
 438         if (os.length > SSL_MAX_KEY_ARG_LENGTH)
 439                 ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
 440         else
 441                 ret->key_arg_length=os.length;
 442         memcpy(ret->key_arg,os.data,ret->key_arg_length);
 443         if (os.data != NULL) OPENSSL_free(os.data);
 444
 445         ai.length=0;
 446         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
 447         if (ai.data != NULL)
 448                 {
 449                 ret->time=ASN1_INTEGER_get(aip);
 450                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 451                 }
 452         else
 453                 ret->time=(unsigned long)time(NULL);
 454
 455         ai.length=0;
 456         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
 457         if (ai.data != NULL)
 458                 {
 459                 ret->timeout=ASN1_INTEGER_get(aip);
 460                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 461                 }
 462         else
 463                 ret->timeout=3;
 464
 465         if (ret->peer != NULL)
 466                 {
 467                 X509_free(ret->peer);
 468                 ret->peer=NULL;
 469                 }
 470         M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
 471
 472         os.length=0;
 473         os.data=NULL;
 474         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
 475
 476         if(os.data != NULL)
 477             {
 478             if (os.length > SSL_MAX_SID_CTX_LENGTH)
 479                 {
 480                 ret->sid_ctx_length=os.length;
 481                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_BAD_LENGTH);
 482                 }
 483             else
 484                 {
 485                 ret->sid_ctx_length=os.length;
 486                 memcpy(ret->sid_ctx,os.data,os.length);
 487                 }
 488             OPENSSL_free(os.data); os.data=NULL; os.length=0;
 489             }
 490         else
 491             ret->sid_ctx_length=0;
 492
 493         ai.length=0;
 494         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
 495         if (ai.data != NULL)
 496                 {
 497                 ret->verify_result=ASN1_INTEGER_get(aip);
 498                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 499                 }
 500         else
 501                 ret->verify_result=X509_V_OK;
 502
 503 #ifndef OPENSSL_NO_TLSEXT
 504         os.length=0;
 505         os.data=NULL;
 506         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
 507         if (os.data)
 508                 {
 509                 ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
 510                 OPENSSL_free(os.data);
 511                 os.data = NULL;
 512                 os.length = 0;
 513                 }
 514         else
 515                 ret->tlsext_hostname=NULL;
 516
 517 #ifndef OPENSSL_NO_EC
 518         os.length=0;
 519         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7);
 520         if (os.data)
 521                 {
 522                 ret->tlsext_ecpointformatlist_length=os.length;
 523                 memcpy(ret->tlsext_ecpointformatlist,os.data,ret->tlsext_ecpointformatlist_length);
 524                 OPENSSL_free(os.data);
 525                 os.data = NULL;
 526                 os.length = 0;
 527                 }
 528         else
 529                 ret->tlsext_ecpointformatlist_length=0;
 530                 ret->tlsext_ecpointformatlist=NULL;
 531         os.length=0;
 532         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,8);
 533         if (os.data)
 534                 {
 535                 ret->tlsext_ellipticcurvelist_length=os.length;
 536                 memcpy(ret->tlsext_ellipticcurvelist,os.data,ret->tlsext_ellipticcurvelist_length);
 537                 OPENSSL_free(os.data);
 538                 os.data = NULL;
 539                 os.length = 0;
 540                 }
 541         else
 542                 ret->tlsext_ellipticcurvelist_length=0;
 543                 ret->tlsext_ellipticcurvelist=NULL;
 544 #endif /* OPENSSL_NO_EC */
 545 #endif /* OPENSSL_NO_TLSEXT */
 546
 547 #ifndef OPENSSL_NO_PSK
 548         os.length=0;
 549         os.data=NULL;
 550         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,9);
 551         if (os.data)
 552                 {
 553                 ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length);
 554                 OPENSSL_free(os.data);
 555                 os.data = NULL;
 556                 os.length = 0;
 557                 }
 558         else
 559                 ret->psk_identity_hint=NULL;
 560
 561         os.length=0;
 562         os.data=NULL;
 563         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
 564         if (os.data)
 565                 {
 566                 ret->psk_identity = BUF_strndup((char *)os.data, os.length);
 567                 OPENSSL_free(os.data);
 568                 os.data = NULL;
 569                 os.length = 0;
 570                 }
 571         else
 572                 ret->psk_identity=NULL;
 573 #endif /* OPENSSL_NO_KRB5 */
 574
 575         M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
 576         }