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 <openssl/crypto.h>
  88 #include "ssl_locl.h"
  89 #include <openssl/asn1_mac.h>
  90 #include <openssl/objects.h>
  91 #include <openssl/x509.h>
  92
  93 typedef struct ssl_session_asn1_st
  94         {
  95         ASN1_INTEGER version;
  96         ASN1_INTEGER ssl_version;
  97         ASN1_OCTET_STRING cipher;
  98         ASN1_OCTET_STRING comp_id;
  99         ASN1_OCTET_STRING master_key;
 100         ASN1_OCTET_STRING session_id;
 101         ASN1_OCTET_STRING session_id_context;
 102         ASN1_OCTET_STRING key_arg;
 103 #ifndef OPENSSL_NO_KRB5
 104         ASN1_OCTET_STRING krb5_princ;
 105 #endif /* OPENSSL_NO_KRB5 */
 106         ASN1_INTEGER time;
 107         ASN1_INTEGER timeout;
 108         ASN1_INTEGER verify_result;
 109 #ifndef OPENSSL_NO_TLSEXT
 110         ASN1_OCTET_STRING tlsext_hostname;
 111         ASN1_INTEGER tlsext_tick_lifetime;
 112         ASN1_OCTET_STRING tlsext_tick;
 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,v7=0,v8=0;
 124         unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
 125         unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
 126 #ifndef OPENSSL_NO_TLSEXT
 127         int v6=0,v9=0,v10=0;
 128         unsigned char ibuf6[LSIZE2];
 129 #endif
 130 #ifndef OPENSSL_NO_COMP
 131         unsigned char cbuf;
 132         int v11=0;
 133 #endif
 134         long l;
 135         SSL_SESSION_ASN1 a;
 136         M_ASN1_I2D_vars(in);
 137
 138         if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
 139                 return(0);
 140
 141         /* Note that I cheat in the following 2 assignments.  I know
 142          * that if the ASN1_INTEGER passed to ASN1_INTEGER_set
 143          * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
 144          * This is a bit evil but makes things simple, no dynamic allocation
 145          * to clean up :-) */
 146         a.version.length=LSIZE2;
 147         a.version.type=V_ASN1_INTEGER;
 148         a.version.data=ibuf1;
 149         ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
 150
 151         a.ssl_version.length=LSIZE2;
 152         a.ssl_version.type=V_ASN1_INTEGER;
 153         a.ssl_version.data=ibuf2;
 154         ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
 155
 156         a.cipher.type=V_ASN1_OCTET_STRING;
 157         a.cipher.data=buf;
 158
 159         if (in->cipher == NULL)
 160                 l=in->cipher_id;
 161         else
 162                 l=in->cipher->id;
 163         if (in->ssl_version == SSL2_VERSION)
 164                 {
 165                 a.cipher.length=3;
 166                 buf[0]=((unsigned char)(l>>16L))&0xff;
 167                 buf[1]=((unsigned char)(l>> 8L))&0xff;
 168                 buf[2]=((unsigned char)(l     ))&0xff;
 169                 }
 170         else
 171                 {
 172                 a.cipher.length=2;
 173                 buf[0]=((unsigned char)(l>>8L))&0xff;
 174                 buf[1]=((unsigned char)(l    ))&0xff;
 175                 }
 176
 177 #ifndef OPENSSL_NO_COMP
 178         if (in->compress_meth)
 179                 {
 180                 cbuf = (unsigned char)in->compress_meth;
 181                 a.comp_id.length = 1;
 182                 a.comp_id.type = V_ASN1_OCTET_STRING;
 183                 a.comp_id.data = &cbuf;
 184                 }
 185 #endif
 186
 187         a.master_key.length=in->master_key_length;
 188         a.master_key.type=V_ASN1_OCTET_STRING;
 189         a.master_key.data=in->master_key;
 190
 191         a.session_id.length=in->session_id_length;
 192         a.session_id.type=V_ASN1_OCTET_STRING;
 193         a.session_id.data=in->session_id;
 194
 195         a.session_id_context.length=in->sid_ctx_length;
 196         a.session_id_context.type=V_ASN1_OCTET_STRING;
 197         a.session_id_context.data=in->sid_ctx;
 198
 199         a.key_arg.length=in->key_arg_length;
 200         a.key_arg.type=V_ASN1_OCTET_STRING;
 201         a.key_arg.data=in->key_arg;
 202
 203 #ifndef OPENSSL_NO_KRB5
 204         if (in->krb5_client_princ_len)
 205                 {
 206                 a.krb5_princ.length=in->krb5_client_princ_len;
 207                 a.krb5_princ.type=V_ASN1_OCTET_STRING;
 208                 a.krb5_princ.data=in->krb5_client_princ;
 209                 }
 210 #endif /* OPENSSL_NO_KRB5 */
 211
 212         if (in->time != 0L)
 213                 {
 214                 a.time.length=LSIZE2;
 215                 a.time.type=V_ASN1_INTEGER;
 216                 a.time.data=ibuf3;
 217                 ASN1_INTEGER_set(&(a.time),in->time);
 218                 }
 219
 220         if (in->timeout != 0L)
 221                 {
 222                 a.timeout.length=LSIZE2;
 223                 a.timeout.type=V_ASN1_INTEGER;
 224                 a.timeout.data=ibuf4;
 225                 ASN1_INTEGER_set(&(a.timeout),in->timeout);
 226                 }
 227
 228         if (in->verify_result != X509_V_OK)
 229                 {
 230                 a.verify_result.length=LSIZE2;
 231                 a.verify_result.type=V_ASN1_INTEGER;
 232                 a.verify_result.data=ibuf5;
 233                 ASN1_INTEGER_set(&a.verify_result,in->verify_result);
 234                 }
 235
 236 #ifndef OPENSSL_NO_TLSEXT
 237         if (in->tlsext_hostname)
 238                 {
 239                 a.tlsext_hostname.length=strlen(in->tlsext_hostname);
 240                 a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
 241                 a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
 242                 }
 243         if (in->tlsext_tick)
 244                 {
 245                 a.tlsext_tick.length= in->tlsext_ticklen;
 246                 a.tlsext_tick.type=V_ASN1_OCTET_STRING;
 247                 a.tlsext_tick.data=(unsigned char *)in->tlsext_tick;
 248                 }
 249         if (in->tlsext_tick_lifetime_hint > 0)
 250                 {
 251                 a.tlsext_tick_lifetime.length=LSIZE2;
 252                 a.tlsext_tick_lifetime.type=V_ASN1_INTEGER;
 253                 a.tlsext_tick_lifetime.data=ibuf6;
 254                 ASN1_INTEGER_set(&a.tlsext_tick_lifetime,in->tlsext_tick_lifetime_hint);
 255                 }
 256 #endif /* OPENSSL_NO_TLSEXT */
 257 #ifndef OPENSSL_NO_PSK
 258         if (in->psk_identity_hint)
 259                 {
 260                 a.psk_identity_hint.length=strlen(in->psk_identity_hint);
 261                 a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
 262                 a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
 263                 }
 264         if (in->psk_identity)
 265                 {
 266                 a.psk_identity.length=strlen(in->psk_identity);
 267                 a.psk_identity.type=V_ASN1_OCTET_STRING;
 268                 a.psk_identity.data=(unsigned char *)(in->psk_identity);
 269                 }
 270 #endif /* OPENSSL_NO_PSK */
 271
 272         M_ASN1_I2D_len(&(a.version),            i2d_ASN1_INTEGER);
 273         M_ASN1_I2D_len(&(a.ssl_version),        i2d_ASN1_INTEGER);
 274         M_ASN1_I2D_len(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 275         M_ASN1_I2D_len(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 276         M_ASN1_I2D_len(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 277 #ifndef OPENSSL_NO_KRB5
 278         if (in->krb5_client_princ_len)
 279                 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 280 #endif /* OPENSSL_NO_KRB5 */
 281         if (in->key_arg_length > 0)
 282                 M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
 283         if (in->time != 0L)
 284                 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 285         if (in->timeout != 0L)
 286                 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 287         if (in->peer != NULL)
 288                 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
 289         M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
 290         if (in->verify_result != X509_V_OK)
 291                 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
 292
 293 #ifndef OPENSSL_NO_TLSEXT
 294         if (in->tlsext_tick_lifetime_hint > 0)
 295                 M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 296         if (in->tlsext_tick)
 297                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 298         if (in->tlsext_hostname)
 299                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 300 #ifndef OPENSSL_NO_COMP
 301         if (in->compress_meth)
 302                 M_ASN1_I2D_len_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
 303 #endif
 304 #endif /* OPENSSL_NO_TLSEXT */
 305 #ifndef OPENSSL_NO_PSK
 306         if (in->psk_identity_hint)
 307                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 308         if (in->psk_identity)
 309                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 310 #endif /* OPENSSL_NO_PSK */
 311
 312         M_ASN1_I2D_seq_total();
 313
 314         M_ASN1_I2D_put(&(a.version),            i2d_ASN1_INTEGER);
 315         M_ASN1_I2D_put(&(a.ssl_version),        i2d_ASN1_INTEGER);
 316         M_ASN1_I2D_put(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 317         M_ASN1_I2D_put(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 318         M_ASN1_I2D_put(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 319 #ifndef OPENSSL_NO_KRB5
 320         if (in->krb5_client_princ_len)
 321                 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 322 #endif /* OPENSSL_NO_KRB5 */
 323         if (in->key_arg_length > 0)
 324                 M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
 325         if (in->time != 0L)
 326                 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 327         if (in->timeout != 0L)
 328                 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 329         if (in->peer != NULL)
 330                 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
 331         M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
 332                                v4);
 333         if (in->verify_result != X509_V_OK)
 334                 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
 335 #ifndef OPENSSL_NO_TLSEXT
 336         if (in->tlsext_hostname)
 337                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 338 #endif /* OPENSSL_NO_TLSEXT */
 339 #ifndef OPENSSL_NO_PSK
 340         if (in->psk_identity_hint)
 341                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 342         if (in->psk_identity)
 343                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 344 #endif /* OPENSSL_NO_PSK */
 345 #ifndef OPENSSL_NO_TLSEXT
 346         if (in->tlsext_tick_lifetime_hint > 0)
 347                 M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 348         if (in->tlsext_tick)
 349                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 350 #endif /* OPENSSL_NO_TLSEXT */
 351 #ifndef OPENSSL_NO_COMP
 352         if (in->compress_meth)
 353                 M_ASN1_I2D_put_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
 354 #endif
 355         M_ASN1_I2D_finish();
 356         }
 357
 358 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 359                              long length)
 360         {
 361         int ssl_version=0,i;
 362         long id;
 363         ASN1_INTEGER ai,*aip;
 364         ASN1_OCTET_STRING os,*osp;
 365         M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
 366
 367         aip= &ai;
 368         osp= &os;
 369
 370         M_ASN1_D2I_Init();
 371         M_ASN1_D2I_start_sequence();
 372
 373         ai.data=NULL; ai.length=0;
 374         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 375         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 376
 377         /* we don't care about the version right now :-) */
 378         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 379         ssl_version=(int)ASN1_INTEGER_get(aip);
 380         ret->ssl_version=ssl_version;
 381         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 382
 383         os.data=NULL; os.length=0;
 384         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 385         if (ssl_version == SSL2_VERSION)
 386                 {
 387                 if (os.length != 3)
 388                         {
 389                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 390                         goto err;
 391                         }
 392                 id=0x02000000L|
 393                         ((unsigned long)os.data[0]<<16L)|
 394                         ((unsigned long)os.data[1]<< 8L)|
 395                          (unsigned long)os.data[2];
 396                 }
 397         else if ((ssl_version>>8) >= SSL3_VERSION_MAJOR)
 398                 {
 399                 if (os.length != 2)
 400                         {
 401                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 402                         goto err;
 403                         }
 404                 id=0x03000000L|
 405                         ((unsigned long)os.data[0]<<8L)|
 406                          (unsigned long)os.data[1];
 407                 }
 408         else
 409                 {
 410                 c.error=SSL_R_UNKNOWN_SSL_VERSION;
 411                 goto err;
 412                 }
 413
 414         ret->cipher=NULL;
 415         ret->cipher_id=id;
 416
 417         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 418         if ((ssl_version>>8) >= SSL3_VERSION_MAJOR)
 419                 i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 420         else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
 421                 i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
 422
 423         if (os.length > i)
 424                 os.length = i;
 425         if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
 426                 os.length = sizeof(ret->session_id);
 427
 428         ret->session_id_length=os.length;
 429         OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
 430         memcpy(ret->session_id,os.data,os.length);
 431
 432         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 433         if (os.length > SSL_MAX_MASTER_KEY_LENGTH)
 434                 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
 435         else
 436                 ret->master_key_length=os.length;
 437         memcpy(ret->master_key,os.data,ret->master_key_length);
 438
 439         os.length=0;
 440
 441 #ifndef OPENSSL_NO_KRB5
 442         os.length=0;
 443         M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
 444         if (os.data)
 445                 {
 446                 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
 447                         ret->krb5_client_princ_len=0;
 448                 else
 449                         ret->krb5_client_princ_len=os.length;
 450                 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
 451                 OPENSSL_free(os.data);
 452                 os.data = NULL;
 453                 os.length = 0;
 454                 }
 455         else
 456                 ret->krb5_client_princ_len=0;
 457 #endif /* OPENSSL_NO_KRB5 */
 458
 459         M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
 460         if (os.length > SSL_MAX_KEY_ARG_LENGTH)
 461                 ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
 462         else
 463                 ret->key_arg_length=os.length;
 464         memcpy(ret->key_arg,os.data,ret->key_arg_length);
 465         if (os.data != NULL) OPENSSL_free(os.data);
 466
 467         ai.length=0;
 468         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
 469         if (ai.data != NULL)
 470                 {
 471                 ret->time=ASN1_INTEGER_get(aip);
 472                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 473                 }
 474         else
 475                 ret->time=(unsigned long)time(NULL);
 476
 477         ai.length=0;
 478         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
 479         if (ai.data != NULL)
 480                 {
 481                 ret->timeout=ASN1_INTEGER_get(aip);
 482                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 483                 }
 484         else
 485                 ret->timeout=3;
 486
 487         if (ret->peer != NULL)
 488                 {
 489                 X509_free(ret->peer);
 490                 ret->peer=NULL;
 491                 }
 492         M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
 493
 494         os.length=0;
 495         os.data=NULL;
 496         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
 497
 498         if(os.data != NULL)
 499             {
 500             if (os.length > SSL_MAX_SID_CTX_LENGTH)
 501                 {
 502                 c.error=SSL_R_BAD_LENGTH;
 503                 goto err;
 504                 }
 505             else
 506                 {
 507                 ret->sid_ctx_length=os.length;
 508                 memcpy(ret->sid_ctx,os.data,os.length);
 509                 }
 510             OPENSSL_free(os.data); os.data=NULL; os.length=0;
 511             }
 512         else
 513             ret->sid_ctx_length=0;
 514
 515         ai.length=0;
 516         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
 517         if (ai.data != NULL)
 518                 {
 519                 ret->verify_result=ASN1_INTEGER_get(aip);
 520                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 521                 }
 522         else
 523                 ret->verify_result=X509_V_OK;
 524
 525 #ifndef OPENSSL_NO_TLSEXT
 526         os.length=0;
 527         os.data=NULL;
 528         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
 529         if (os.data)
 530                 {
 531                 ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
 532                 OPENSSL_free(os.data);
 533                 os.data = NULL;
 534                 os.length = 0;
 535                 }
 536         else
 537                 ret->tlsext_hostname=NULL;
 538 #endif /* OPENSSL_NO_TLSEXT */
 539
 540 #ifndef OPENSSL_NO_PSK
 541         os.length=0;
 542         os.data=NULL;
 543         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7);
 544         if (os.data)
 545                 {
 546                 ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length);
 547                 OPENSSL_free(os.data);
 548                 os.data = NULL;
 549                 os.length = 0;
 550                 }
 551         else
 552                 ret->psk_identity_hint=NULL;
 553 #endif /* OPENSSL_NO_PSK */
 554
 555 #ifndef OPENSSL_NO_TLSEXT
 556         ai.length=0;
 557         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,9);
 558         if (ai.data != NULL)
 559                 {
 560                 ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip);
 561                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 562                 }
 563         else if (ret->tlsext_ticklen && ret->session_id_length)
 564                 ret->tlsext_tick_lifetime_hint = -1;
 565         else
 566                 ret->tlsext_tick_lifetime_hint=0;
 567         os.length=0;
 568         os.data=NULL;
 569         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
 570         if (os.data)
 571                 {
 572                 ret->tlsext_tick = os.data;
 573                 ret->tlsext_ticklen = os.length;
 574                 os.data = NULL;
 575                 os.length = 0;
 576                 }
 577         else
 578                 ret->tlsext_tick=NULL;
 579 #endif /* OPENSSL_NO_TLSEXT */
 580 #ifndef OPENSSL_NO_COMP
 581         os.length=0;
 582         os.data=NULL;
 583         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,11);
 584         if (os.data)
 585                 {
 586                 ret->compress_meth = os.data[0];
 587                 OPENSSL_free(os.data);
 588                 os.data = NULL;
 589                 }
 590 #endif
 591
 592         M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
 593         }