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 comp_id;
  98         ASN1_OCTET_STRING master_key;
  99         ASN1_OCTET_STRING session_id;
 100         ASN1_OCTET_STRING session_id_context;
 101 #ifndef OPENSSL_NO_KRB5
 102         ASN1_OCTET_STRING krb5_princ;
 103 #endif /* OPENSSL_NO_KRB5 */
 104         ASN1_INTEGER time;
 105         ASN1_INTEGER timeout;
 106         ASN1_INTEGER verify_result;
 107 #ifndef OPENSSL_NO_TLSEXT
 108         ASN1_OCTET_STRING tlsext_hostname;
 109         ASN1_INTEGER tlsext_tick_lifetime;
 110         ASN1_OCTET_STRING tlsext_tick;
 111 #endif /* OPENSSL_NO_TLSEXT */
 112 #ifndef OPENSSL_NO_PSK
 113         ASN1_OCTET_STRING psk_identity_hint;
 114         ASN1_OCTET_STRING psk_identity;
 115 #endif /* OPENSSL_NO_PSK */
 116 #ifndef OPENSSL_NO_SRP
 117         ASN1_OCTET_STRING srp_username;
 118 #endif /* OPENSSL_NO_SRP */
 119         } SSL_SESSION_ASN1;
 120
 121 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
 122         {
 123 #define LSIZE2 (sizeof(long)*2)
 124         int v1=0,v2=0,v3=0,v4=0,v5=0,v7=0,v8=0;
 125         unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
 126         unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
 127 #ifndef OPENSSL_NO_TLSEXT
 128         int v6=0,v9=0,v10=0;
 129         unsigned char ibuf6[LSIZE2];
 130 #endif
 131 #ifndef OPENSSL_NO_COMP
 132         unsigned char cbuf;
 133         int v11=0;
 134 #endif
 135 #ifndef OPENSSL_NO_SRP
 136         int v12=0;
 137 #endif
 138         long l;
 139         SSL_SESSION_ASN1 a;
 140         M_ASN1_I2D_vars(in);
 141
 142         if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
 143                 return(0);
 144
 145         /* Note that I cheat in the following 2 assignments.  I know
 146          * that if the ASN1_INTEGER passed to ASN1_INTEGER_set
 147          * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
 148          * This is a bit evil but makes things simple, no dynamic allocation
 149          * to clean up :-) */
 150         a.version.length=LSIZE2;
 151         a.version.type=V_ASN1_INTEGER;
 152         a.version.data=ibuf1;
 153         ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
 154
 155         a.ssl_version.length=LSIZE2;
 156         a.ssl_version.type=V_ASN1_INTEGER;
 157         a.ssl_version.data=ibuf2;
 158         ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
 159
 160         a.cipher.type=V_ASN1_OCTET_STRING;
 161         a.cipher.data=buf;
 162
 163         if (in->cipher == NULL)
 164                 l=in->cipher_id;
 165         else
 166                 l=in->cipher->id;
 167         a.cipher.length=2;
 168         buf[0]=((unsigned char)(l>>8L))&0xff;
 169         buf[1]=((unsigned char)(l    ))&0xff;
 170
 171
 172 #ifndef OPENSSL_NO_COMP
 173         if (in->compress_meth)
 174                 {
 175                 cbuf = (unsigned char)in->compress_meth;
 176                 a.comp_id.length = 1;
 177                 a.comp_id.type = V_ASN1_OCTET_STRING;
 178                 a.comp_id.data = &cbuf;
 179                 }
 180 #endif
 181
 182         a.master_key.length=in->master_key_length;
 183         a.master_key.type=V_ASN1_OCTET_STRING;
 184         a.master_key.data=in->master_key;
 185
 186         a.session_id.length=in->session_id_length;
 187         a.session_id.type=V_ASN1_OCTET_STRING;
 188         a.session_id.data=in->session_id;
 189
 190         a.session_id_context.length=in->sid_ctx_length;
 191         a.session_id_context.type=V_ASN1_OCTET_STRING;
 192         a.session_id_context.data=in->sid_ctx;
 193
 194 #ifndef OPENSSL_NO_KRB5
 195         if (in->krb5_client_princ_len)
 196                 {
 197                 a.krb5_princ.length=in->krb5_client_princ_len;
 198                 a.krb5_princ.type=V_ASN1_OCTET_STRING;
 199                 a.krb5_princ.data=in->krb5_client_princ;
 200                 }
 201 #endif /* OPENSSL_NO_KRB5 */
 202
 203         if (in->time != 0L)
 204                 {
 205                 a.time.length=LSIZE2;
 206                 a.time.type=V_ASN1_INTEGER;
 207                 a.time.data=ibuf3;
 208                 ASN1_INTEGER_set(&(a.time),in->time);
 209                 }
 210
 211         if (in->timeout != 0L)
 212                 {
 213                 a.timeout.length=LSIZE2;
 214                 a.timeout.type=V_ASN1_INTEGER;
 215                 a.timeout.data=ibuf4;
 216                 ASN1_INTEGER_set(&(a.timeout),in->timeout);
 217                 }
 218
 219         if (in->verify_result != X509_V_OK)
 220                 {
 221                 a.verify_result.length=LSIZE2;
 222                 a.verify_result.type=V_ASN1_INTEGER;
 223                 a.verify_result.data=ibuf5;
 224                 ASN1_INTEGER_set(&a.verify_result,in->verify_result);
 225                 }
 226
 227 #ifndef OPENSSL_NO_TLSEXT
 228         if (in->tlsext_hostname)
 229                 {
 230                 a.tlsext_hostname.length=strlen(in->tlsext_hostname);
 231                 a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
 232                 a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
 233                 }
 234         if (in->tlsext_tick)
 235                 {
 236                 a.tlsext_tick.length= in->tlsext_ticklen;
 237                 a.tlsext_tick.type=V_ASN1_OCTET_STRING;
 238                 a.tlsext_tick.data=(unsigned char *)in->tlsext_tick;
 239                 }
 240         if (in->tlsext_tick_lifetime_hint > 0)
 241                 {
 242                 a.tlsext_tick_lifetime.length=LSIZE2;
 243                 a.tlsext_tick_lifetime.type=V_ASN1_INTEGER;
 244                 a.tlsext_tick_lifetime.data=ibuf6;
 245                 ASN1_INTEGER_set(&a.tlsext_tick_lifetime,in->tlsext_tick_lifetime_hint);
 246                 }
 247 #endif /* OPENSSL_NO_TLSEXT */
 248 #ifndef OPENSSL_NO_PSK
 249         if (in->psk_identity_hint)
 250                 {
 251                 a.psk_identity_hint.length=strlen(in->psk_identity_hint);
 252                 a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
 253                 a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
 254                 }
 255         if (in->psk_identity)
 256                 {
 257                 a.psk_identity.length=strlen(in->psk_identity);
 258                 a.psk_identity.type=V_ASN1_OCTET_STRING;
 259                 a.psk_identity.data=(unsigned char *)(in->psk_identity);
 260                 }
 261 #endif /* OPENSSL_NO_PSK */
 262 #ifndef OPENSSL_NO_SRP
 263         if (in->srp_username)
 264                 {
 265                 a.srp_username.length=strlen(in->srp_username);
 266                 a.srp_username.type=V_ASN1_OCTET_STRING;
 267                 a.srp_username.data=(unsigned char *)(in->srp_username);
 268                 }
 269 #endif /* OPENSSL_NO_SRP */
 270
 271         M_ASN1_I2D_len(&(a.version),            i2d_ASN1_INTEGER);
 272         M_ASN1_I2D_len(&(a.ssl_version),        i2d_ASN1_INTEGER);
 273         M_ASN1_I2D_len(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 274         M_ASN1_I2D_len(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 275         M_ASN1_I2D_len(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 276 #ifndef OPENSSL_NO_KRB5
 277         if (in->krb5_client_princ_len)
 278                 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 279 #endif /* OPENSSL_NO_KRB5 */
 280         if (in->time != 0L)
 281                 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 282         if (in->timeout != 0L)
 283                 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 284         if (in->peer != NULL)
 285                 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
 286         M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
 287         if (in->verify_result != X509_V_OK)
 288                 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
 289
 290 #ifndef OPENSSL_NO_TLSEXT
 291         if (in->tlsext_tick_lifetime_hint > 0)
 292                 M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 293         if (in->tlsext_tick)
 294                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 295         if (in->tlsext_hostname)
 296                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 297 #ifndef OPENSSL_NO_COMP
 298         if (in->compress_meth)
 299                 M_ASN1_I2D_len_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
 300 #endif
 301 #endif /* OPENSSL_NO_TLSEXT */
 302 #ifndef OPENSSL_NO_PSK
 303         if (in->psk_identity_hint)
 304                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 305         if (in->psk_identity)
 306                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 307 #endif /* OPENSSL_NO_PSK */
 308 #ifndef OPENSSL_NO_SRP
 309         if (in->srp_username)
 310                 M_ASN1_I2D_len_EXP_opt(&(a.srp_username), i2d_ASN1_OCTET_STRING,12,v12);
 311 #endif /* OPENSSL_NO_SRP */
 312
 313         M_ASN1_I2D_seq_total();
 314
 315         M_ASN1_I2D_put(&(a.version),            i2d_ASN1_INTEGER);
 316         M_ASN1_I2D_put(&(a.ssl_version),        i2d_ASN1_INTEGER);
 317         M_ASN1_I2D_put(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 318         M_ASN1_I2D_put(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 319         M_ASN1_I2D_put(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 320 #ifndef OPENSSL_NO_KRB5
 321         if (in->krb5_client_princ_len)
 322                 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 323 #endif /* OPENSSL_NO_KRB5 */
 324         if (in->time != 0L)
 325                 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 326         if (in->timeout != 0L)
 327                 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 328         if (in->peer != NULL)
 329                 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
 330         M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
 331                                v4);
 332         if (in->verify_result != X509_V_OK)
 333                 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
 334 #ifndef OPENSSL_NO_TLSEXT
 335         if (in->tlsext_hostname)
 336                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 337 #endif /* OPENSSL_NO_TLSEXT */
 338 #ifndef OPENSSL_NO_PSK
 339         if (in->psk_identity_hint)
 340                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 341         if (in->psk_identity)
 342                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 343 #endif /* OPENSSL_NO_PSK */
 344 #ifndef OPENSSL_NO_TLSEXT
 345         if (in->tlsext_tick_lifetime_hint > 0)
 346                 M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 347         if (in->tlsext_tick)
 348                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 349 #endif /* OPENSSL_NO_TLSEXT */
 350 #ifndef OPENSSL_NO_COMP
 351         if (in->compress_meth)
 352                 M_ASN1_I2D_put_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
 353 #endif
 354 #ifndef OPENSSL_NO_SRP
 355         if (in->srp_username)
 356                 M_ASN1_I2D_put_EXP_opt(&(a.srp_username), i2d_ASN1_OCTET_STRING,12,v12);
 357 #endif /* OPENSSL_NO_SRP */
 358         M_ASN1_I2D_finish();
 359         }
 360
 361 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 362                              long length)
 363         {
 364         int ssl_version=0,i;
 365         long id;
 366         ASN1_INTEGER ai,*aip;
 367         ASN1_OCTET_STRING os,*osp;
 368         M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
 369
 370         aip= &ai;
 371         osp= &os;
 372
 373         M_ASN1_D2I_Init();
 374         M_ASN1_D2I_start_sequence();
 375
 376         ai.data=NULL; ai.length=0;
 377         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 378         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 379
 380         /* we don't care about the version right now :-) */
 381         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 382         ssl_version=(int)ASN1_INTEGER_get(aip);
 383         ret->ssl_version=ssl_version;
 384         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 385
 386         os.data=NULL; os.length=0;
 387         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 388         if ((ssl_version>>8) >= SSL3_VERSION_MAJOR)
 389                 {
 390                 if (os.length != 2)
 391                         {
 392                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 393                         c.line=__LINE__;
 394                         goto err;
 395                         }
 396                 id=0x03000000L|
 397                         ((unsigned long)os.data[0]<<8L)|
 398                          (unsigned long)os.data[1];
 399                 }
 400         else
 401                 {
 402                 c.error=SSL_R_UNKNOWN_SSL_VERSION;
 403                 c.line=__LINE__;
 404                 goto err;
 405                 }
 406
 407         ret->cipher=NULL;
 408         ret->cipher_id=id;
 409
 410         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 411         i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 412
 413         if (os.length > i)
 414                 os.length = i;
 415         if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
 416                 os.length = sizeof(ret->session_id);
 417
 418         ret->session_id_length=os.length;
 419         OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
 420         memcpy(ret->session_id,os.data,os.length);
 421
 422         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 423         if (os.length > SSL_MAX_MASTER_KEY_LENGTH)
 424                 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
 425         else
 426                 ret->master_key_length=os.length;
 427         memcpy(ret->master_key,os.data,ret->master_key_length);
 428
 429         os.length=0;
 430
 431 #ifndef OPENSSL_NO_KRB5
 432         os.length=0;
 433         M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
 434         if (os.data)
 435                 {
 436                 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
 437                         ret->krb5_client_princ_len=0;
 438                 else
 439                         ret->krb5_client_princ_len=os.length;
 440                 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
 441                 OPENSSL_free(os.data);
 442                 os.data = NULL;
 443                 os.length = 0;
 444                 }
 445         else
 446                 ret->krb5_client_princ_len=0;
 447 #endif /* OPENSSL_NO_KRB5 */
 448
 449         M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
 450         if (os.data != NULL) OPENSSL_free(os.data);
 451
 452         ai.length=0;
 453         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
 454         if (ai.data != NULL)
 455                 {
 456                 ret->time=ASN1_INTEGER_get(aip);
 457                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 458                 }
 459         else
 460                 ret->time=(unsigned long)time(NULL);
 461
 462         ai.length=0;
 463         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
 464         if (ai.data != NULL)
 465                 {
 466                 ret->timeout=ASN1_INTEGER_get(aip);
 467                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 468                 }
 469         else
 470                 ret->timeout=3;
 471
 472         if (ret->peer != NULL)
 473                 {
 474                 X509_free(ret->peer);
 475                 ret->peer=NULL;
 476                 }
 477         M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
 478
 479         os.length=0;
 480         os.data=NULL;
 481         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
 482
 483         if(os.data != NULL)
 484             {
 485             if (os.length > SSL_MAX_SID_CTX_LENGTH)
 486                 {
 487                 c.error=SSL_R_BAD_LENGTH;
 488                 c.line=__LINE__;
 489                 goto err;
 490                 }
 491             else
 492                 {
 493                 ret->sid_ctx_length=os.length;
 494                 memcpy(ret->sid_ctx,os.data,os.length);
 495                 }
 496             OPENSSL_free(os.data); os.data=NULL; os.length=0;
 497             }
 498         else
 499             ret->sid_ctx_length=0;
 500
 501         ai.length=0;
 502         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
 503         if (ai.data != NULL)
 504                 {
 505                 ret->verify_result=ASN1_INTEGER_get(aip);
 506                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 507                 }
 508         else
 509                 ret->verify_result=X509_V_OK;
 510
 511 #ifndef OPENSSL_NO_TLSEXT
 512         os.length=0;
 513         os.data=NULL;
 514         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
 515         if (os.data)
 516                 {
 517                 ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
 518                 OPENSSL_free(os.data);
 519                 os.data = NULL;
 520                 os.length = 0;
 521                 }
 522         else
 523                 ret->tlsext_hostname=NULL;
 524 #endif /* OPENSSL_NO_TLSEXT */
 525
 526 #ifndef OPENSSL_NO_PSK
 527         os.length=0;
 528         os.data=NULL;
 529         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7);
 530         if (os.data)
 531                 {
 532                 ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length);
 533                 OPENSSL_free(os.data);
 534                 os.data = NULL;
 535                 os.length = 0;
 536                 }
 537         else
 538                 ret->psk_identity_hint=NULL;
 539
 540         os.length=0;
 541         os.data=NULL;
 542         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,8);
 543         if (os.data)
 544                 {
 545                 ret->psk_identity = BUF_strndup((char *)os.data, os.length);
 546                 OPENSSL_free(os.data);
 547                 os.data = NULL;
 548                 os.length = 0;
 549                 }
 550         else
 551                 ret->psk_identity=NULL;
 552 #endif /* OPENSSL_NO_PSK */
 553
 554 #ifndef OPENSSL_NO_TLSEXT
 555         ai.length=0;
 556         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,9);
 557         if (ai.data != NULL)
 558                 {
 559                 ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip);
 560                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 561                 }
 562         else if (ret->tlsext_ticklen && ret->session_id_length)
 563                 ret->tlsext_tick_lifetime_hint = -1;
 564         else
 565                 ret->tlsext_tick_lifetime_hint=0;
 566         os.length=0;
 567         os.data=NULL;
 568         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
 569         if (os.data)
 570                 {
 571                 ret->tlsext_tick = os.data;
 572                 ret->tlsext_ticklen = os.length;
 573                 os.data = NULL;
 574                 os.length = 0;
 575                 }
 576         else
 577                 ret->tlsext_tick=NULL;
 578 #endif /* OPENSSL_NO_TLSEXT */
 579 #ifndef OPENSSL_NO_COMP
 580         os.length=0;
 581         os.data=NULL;
 582         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,11);
 583         if (os.data)
 584                 {
 585                 ret->compress_meth = os.data[0];
 586                 OPENSSL_free(os.data);
 587                 os.data = NULL;
 588                 }
 589 #endif
 590
 591 #ifndef OPENSSL_NO_SRP
 592         os.length=0;
 593         os.data=NULL;
 594         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,12);
 595         if (os.data)
 596                 {
 597                 ret->srp_username = BUF_strndup((char *)os.data, os.length);
 598                 OPENSSL_free(os.data);
 599                 os.data = NULL;
 600                 os.length = 0;
 601                 }
 602         else
 603                 ret->srp_username=NULL;
 604 #endif /* OPENSSL_NO_SRP */
 605
 606         M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
 607         }