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         ASN1_OCTET_STRING key_arg;
 102 #ifndef OPENSSL_NO_KRB5
 103         ASN1_OCTET_STRING krb5_princ;
 104 #endif /* OPENSSL_NO_KRB5 */
 105         ASN1_INTEGER time;
 106         ASN1_INTEGER timeout;
 107         ASN1_INTEGER verify_result;
 108 #ifndef OPENSSL_NO_TLSEXT
 109         ASN1_OCTET_STRING tlsext_hostname;
 110         ASN1_INTEGER tlsext_tick_lifetime;
 111         ASN1_OCTET_STRING tlsext_tick;
 112 #endif /* OPENSSL_NO_TLSEXT */
 113 #ifndef OPENSSL_NO_PSK
 114         ASN1_OCTET_STRING psk_identity_hint;
 115         ASN1_OCTET_STRING psk_identity;
 116 #endif /* OPENSSL_NO_PSK */
 117         } SSL_SESSION_ASN1;
 118
 119 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
 120         {
 121 #define LSIZE2 (sizeof(long)*2)
 122         int v1=0,v2=0,v3=0,v4=0,v5=0,v7=0,v8=0;
 123         unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2], cbuf;
 124         unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
 125 #ifndef OPENSSL_NO_TLSEXT
 126         int v6=0,v9=0,v10=0;
 127         unsigned char ibuf6[LSIZE2];
 128 #endif
 129 #ifndef OPENSSL_NO_COMP
 130         int v11=0;
 131 #endif
 132         long l;
 133         SSL_SESSION_ASN1 a;
 134         M_ASN1_I2D_vars(in);
 135
 136         if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
 137                 return(0);
 138
 139         /* Note that I cheat in the following 2 assignments.  I know
 140          * that if the ASN1_INTEGER passed to ASN1_INTEGER_set
 141          * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
 142          * This is a bit evil but makes things simple, no dynamic allocation
 143          * to clean up :-) */
 144         a.version.length=LSIZE2;
 145         a.version.type=V_ASN1_INTEGER;
 146         a.version.data=ibuf1;
 147         ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
 148
 149         a.ssl_version.length=LSIZE2;
 150         a.ssl_version.type=V_ASN1_INTEGER;
 151         a.ssl_version.data=ibuf2;
 152         ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
 153
 154         a.cipher.type=V_ASN1_OCTET_STRING;
 155         a.cipher.data=buf;
 156
 157         if (in->cipher == NULL)
 158                 l=in->cipher_id;
 159         else
 160                 l=in->cipher->id;
 161         if (in->ssl_version == SSL2_VERSION)
 162                 {
 163                 a.cipher.length=3;
 164                 buf[0]=((unsigned char)(l>>16L))&0xff;
 165                 buf[1]=((unsigned char)(l>> 8L))&0xff;
 166                 buf[2]=((unsigned char)(l     ))&0xff;
 167                 }
 168         else
 169                 {
 170                 a.cipher.length=2;
 171                 buf[0]=((unsigned char)(l>>8L))&0xff;
 172                 buf[1]=((unsigned char)(l    ))&0xff;
 173                 }
 174
 175 #ifndef OPENSSL_NO_COMP
 176         if (in->compress_meth)
 177                 {
 178                 cbuf = (unsigned char)in->compress_meth;
 179                 a.comp_id.length = 1;
 180                 a.comp_id.type = V_ASN1_OCTET_STRING;
 181                 a.comp_id.data = &cbuf;
 182                 }
 183 #endif
 184
 185         a.master_key.length=in->master_key_length;
 186         a.master_key.type=V_ASN1_OCTET_STRING;
 187         a.master_key.data=in->master_key;
 188
 189         a.session_id.length=in->session_id_length;
 190         a.session_id.type=V_ASN1_OCTET_STRING;
 191         a.session_id.data=in->session_id;
 192
 193         a.session_id_context.length=in->sid_ctx_length;
 194         a.session_id_context.type=V_ASN1_OCTET_STRING;
 195         a.session_id_context.data=in->sid_ctx;
 196
 197         a.key_arg.length=in->key_arg_length;
 198         a.key_arg.type=V_ASN1_OCTET_STRING;
 199         a.key_arg.data=in->key_arg;
 200
 201 #ifndef OPENSSL_NO_KRB5
 202         if (in->krb5_client_princ_len)
 203                 {
 204                 a.krb5_princ.length=in->krb5_client_princ_len;
 205                 a.krb5_princ.type=V_ASN1_OCTET_STRING;
 206                 a.krb5_princ.data=in->krb5_client_princ;
 207                 }
 208 #endif /* OPENSSL_NO_KRB5 */
 209
 210         if (in->time != 0L)
 211                 {
 212                 a.time.length=LSIZE2;
 213                 a.time.type=V_ASN1_INTEGER;
 214                 a.time.data=ibuf3;
 215                 ASN1_INTEGER_set(&(a.time),in->time);
 216                 }
 217
 218         if (in->timeout != 0L)
 219                 {
 220                 a.timeout.length=LSIZE2;
 221                 a.timeout.type=V_ASN1_INTEGER;
 222                 a.timeout.data=ibuf4;
 223                 ASN1_INTEGER_set(&(a.timeout),in->timeout);
 224                 }
 225
 226         if (in->verify_result != X509_V_OK)
 227                 {
 228                 a.verify_result.length=LSIZE2;
 229                 a.verify_result.type=V_ASN1_INTEGER;
 230                 a.verify_result.data=ibuf5;
 231                 ASN1_INTEGER_set(&a.verify_result,in->verify_result);
 232                 }
 233
 234 #ifndef OPENSSL_NO_TLSEXT
 235         if (in->tlsext_hostname)
 236                 {
 237                 a.tlsext_hostname.length=strlen(in->tlsext_hostname);
 238                 a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
 239                 a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
 240                 }
 241         if (in->tlsext_tick)
 242                 {
 243                 a.tlsext_tick.length= in->tlsext_ticklen;
 244                 a.tlsext_tick.type=V_ASN1_OCTET_STRING;
 245                 a.tlsext_tick.data=(unsigned char *)in->tlsext_tick;
 246                 /* If we have a ticket set session ID to empty because
 247                  * it will be bogus. If liftime hint is -1 treat as a special
 248                  * case because the session is being used as a container
 249                  */
 250                 if (in->tlsext_ticklen && (in->tlsext_tick_lifetime_hint != -1))
 251                         a.session_id.length=0;
 252                 }
 253         if (in->tlsext_tick_lifetime_hint > 0)
 254                 {
 255                 a.tlsext_tick_lifetime.length=LSIZE2;
 256                 a.tlsext_tick_lifetime.type=V_ASN1_INTEGER;
 257                 a.tlsext_tick_lifetime.data=ibuf6;
 258                 ASN1_INTEGER_set(&a.tlsext_tick_lifetime,in->tlsext_tick_lifetime_hint);
 259                 }
 260 #endif /* OPENSSL_NO_TLSEXT */
 261 #ifndef OPENSSL_NO_PSK
 262         if (in->psk_identity_hint)
 263                 {
 264                 a.psk_identity_hint.length=strlen(in->psk_identity_hint);
 265                 a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
 266                 a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
 267                 }
 268         if (in->psk_identity)
 269                 {
 270                 a.psk_identity.length=strlen(in->psk_identity);
 271                 a.psk_identity.type=V_ASN1_OCTET_STRING;
 272                 a.psk_identity.data=(unsigned char *)(in->psk_identity);
 273                 }
 274 #endif /* OPENSSL_NO_PSK */
 275
 276         M_ASN1_I2D_len(&(a.version),            i2d_ASN1_INTEGER);
 277         M_ASN1_I2D_len(&(a.ssl_version),        i2d_ASN1_INTEGER);
 278         M_ASN1_I2D_len(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 279         M_ASN1_I2D_len(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 280         M_ASN1_I2D_len(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 281 #ifndef OPENSSL_NO_KRB5
 282         if (in->krb5_client_princ_len)
 283                 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 284 #endif /* OPENSSL_NO_KRB5 */
 285         if (in->key_arg_length > 0)
 286                 M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
 287         if (in->time != 0L)
 288                 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 289         if (in->timeout != 0L)
 290                 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 291         if (in->peer != NULL)
 292                 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
 293         M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
 294         if (in->verify_result != X509_V_OK)
 295                 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
 296
 297 #ifndef OPENSSL_NO_TLSEXT
 298         if (in->tlsext_tick_lifetime_hint > 0)
 299                 M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 300         if (in->tlsext_tick)
 301                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 302         if (in->tlsext_hostname)
 303                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 304 #ifndef OPENSSL_NO_COMP
 305         if (in->compress_meth)
 306                 M_ASN1_I2D_len_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
 307 #endif
 308 #endif /* OPENSSL_NO_TLSEXT */
 309 #ifndef OPENSSL_NO_PSK
 310         if (in->psk_identity_hint)
 311                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 312         if (in->psk_identity)
 313                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 314 #endif /* OPENSSL_NO_PSK */
 315
 316         M_ASN1_I2D_seq_total();
 317
 318         M_ASN1_I2D_put(&(a.version),            i2d_ASN1_INTEGER);
 319         M_ASN1_I2D_put(&(a.ssl_version),        i2d_ASN1_INTEGER);
 320         M_ASN1_I2D_put(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 321         M_ASN1_I2D_put(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 322         M_ASN1_I2D_put(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 323 #ifndef OPENSSL_NO_KRB5
 324         if (in->krb5_client_princ_len)
 325                 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 326 #endif /* OPENSSL_NO_KRB5 */
 327         if (in->key_arg_length > 0)
 328                 M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
 329         if (in->time != 0L)
 330                 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 331         if (in->timeout != 0L)
 332                 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 333         if (in->peer != NULL)
 334                 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
 335         M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
 336                                v4);
 337         if (in->verify_result != X509_V_OK)
 338                 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
 339 #ifndef OPENSSL_NO_TLSEXT
 340         if (in->tlsext_hostname)
 341                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 342 #endif /* OPENSSL_NO_TLSEXT */
 343 #ifndef OPENSSL_NO_PSK
 344         if (in->psk_identity_hint)
 345                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 346         if (in->psk_identity)
 347                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 348 #endif /* OPENSSL_NO_PSK */
 349 #ifndef OPENSSL_NO_TLSEXT
 350         if (in->tlsext_tick_lifetime_hint > 0)
 351                 M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 352         if (in->tlsext_tick)
 353                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 354 #endif /* OPENSSL_NO_TLSEXT */
 355 #ifndef OPENSSL_NO_COMP
 356         if (in->compress_meth)
 357                 M_ASN1_I2D_put_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
 358 #endif
 359         M_ASN1_I2D_finish();
 360         }
 361
 362 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 363                              long length)
 364         {
 365         int version,ssl_version=0,i;
 366         long id;
 367         ASN1_INTEGER ai,*aip;
 368         ASN1_OCTET_STRING os,*osp;
 369         M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
 370
 371         aip= &ai;
 372         osp= &os;
 373
 374         M_ASN1_D2I_Init();
 375         M_ASN1_D2I_start_sequence();
 376
 377         ai.data=NULL; ai.length=0;
 378         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 379         version=(int)ASN1_INTEGER_get(aip);
 380         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 381
 382         /* we don't care about the version right now :-) */
 383         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 384         ssl_version=(int)ASN1_INTEGER_get(aip);
 385         ret->ssl_version=ssl_version;
 386         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 387
 388         os.data=NULL; os.length=0;
 389         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 390         if (ssl_version == SSL2_VERSION)
 391                 {
 392                 if (os.length != 3)
 393                         {
 394                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 395                         goto err;
 396                         }
 397                 id=0x02000000L|
 398                         ((unsigned long)os.data[0]<<16L)|
 399                         ((unsigned long)os.data[1]<< 8L)|
 400                          (unsigned long)os.data[2];
 401                 }
 402         else if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 403                 {
 404                 if (os.length != 2)
 405                         {
 406                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 407                         goto err;
 408                         }
 409                 id=0x03000000L|
 410                         ((unsigned long)os.data[0]<<8L)|
 411                          (unsigned long)os.data[1];
 412                 }
 413         else
 414                 {
 415                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_UNKNOWN_SSL_VERSION);
 416                 return(NULL);
 417                 }
 418
 419         ret->cipher=NULL;
 420         ret->cipher_id=id;
 421
 422         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 423         if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
 424                 i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 425         else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
 426                 i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
 427
 428         if (os.length > i)
 429                 os.length = i;
 430         if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
 431                 os.length = sizeof(ret->session_id);
 432
 433         ret->session_id_length=os.length;
 434         OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
 435         memcpy(ret->session_id,os.data,os.length);
 436
 437         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 438         if (os.length > SSL_MAX_MASTER_KEY_LENGTH)
 439                 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
 440         else
 441                 ret->master_key_length=os.length;
 442         memcpy(ret->master_key,os.data,ret->master_key_length);
 443
 444         os.length=0;
 445
 446 #ifndef OPENSSL_NO_KRB5
 447         os.length=0;
 448         M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
 449         if (os.data)
 450                 {
 451                 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
 452                         ret->krb5_client_princ_len=0;
 453                 else
 454                         ret->krb5_client_princ_len=os.length;
 455                 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
 456                 OPENSSL_free(os.data);
 457                 os.data = NULL;
 458                 os.length = 0;
 459                 }
 460         else
 461                 ret->krb5_client_princ_len=0;
 462 #endif /* OPENSSL_NO_KRB5 */
 463
 464         M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
 465         if (os.length > SSL_MAX_KEY_ARG_LENGTH)
 466                 ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
 467         else
 468                 ret->key_arg_length=os.length;
 469         memcpy(ret->key_arg,os.data,ret->key_arg_length);
 470         if (os.data != NULL) OPENSSL_free(os.data);
 471
 472         ai.length=0;
 473         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
 474         if (ai.data != NULL)
 475                 {
 476                 ret->time=ASN1_INTEGER_get(aip);
 477                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 478                 }
 479         else
 480                 ret->time=(unsigned long)time(NULL);
 481
 482         ai.length=0;
 483         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
 484         if (ai.data != NULL)
 485                 {
 486                 ret->timeout=ASN1_INTEGER_get(aip);
 487                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 488                 }
 489         else
 490                 ret->timeout=3;
 491
 492         if (ret->peer != NULL)
 493                 {
 494                 X509_free(ret->peer);
 495                 ret->peer=NULL;
 496                 }
 497         M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
 498
 499         os.length=0;
 500         os.data=NULL;
 501         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
 502
 503         if(os.data != NULL)
 504             {
 505             if (os.length > SSL_MAX_SID_CTX_LENGTH)
 506                 {
 507                 ret->sid_ctx_length=os.length;
 508                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_BAD_LENGTH);
 509                 }
 510             else
 511                 {
 512                 ret->sid_ctx_length=os.length;
 513                 memcpy(ret->sid_ctx,os.data,os.length);
 514                 }
 515             OPENSSL_free(os.data); os.data=NULL; os.length=0;
 516             }
 517         else
 518             ret->sid_ctx_length=0;
 519
 520         ai.length=0;
 521         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
 522         if (ai.data != NULL)
 523                 {
 524                 ret->verify_result=ASN1_INTEGER_get(aip);
 525                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 526                 }
 527         else
 528                 ret->verify_result=X509_V_OK;
 529
 530 #ifndef OPENSSL_NO_TLSEXT
 531         os.length=0;
 532         os.data=NULL;
 533         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
 534         if (os.data)
 535                 {
 536                 ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
 537                 OPENSSL_free(os.data);
 538                 os.data = NULL;
 539                 os.length = 0;
 540                 }
 541         else
 542                 ret->tlsext_hostname=NULL;
 543 #endif /* OPENSSL_NO_TLSEXT */
 544
 545 #ifndef OPENSSL_NO_PSK
 546         os.length=0;
 547         os.data=NULL;
 548         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7);
 549         if (os.data)
 550                 {
 551                 ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length);
 552                 OPENSSL_free(os.data);
 553                 os.data = NULL;
 554                 os.length = 0;
 555                 }
 556         else
 557                 ret->psk_identity_hint=NULL;
 558 #endif /* OPENSSL_NO_PSK */
 559
 560 #ifndef OPENSSL_NO_TLSEXT
 561         ai.length=0;
 562         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,9);
 563         if (ai.data != NULL)
 564                 {
 565                 ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip);
 566                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 567                 }
 568         else if (ret->tlsext_ticklen && ret->session_id_length)
 569                 ret->tlsext_tick_lifetime_hint = -1;
 570         else
 571                 ret->tlsext_tick_lifetime_hint=0;
 572         os.length=0;
 573         os.data=NULL;
 574         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
 575         if (os.data)
 576                 {
 577                 ret->tlsext_tick = os.data;
 578                 ret->tlsext_ticklen = os.length;
 579                 os.data = NULL;
 580                 os.length = 0;
 581 #if 0
 582                 /* There are two ways to detect a resumed ticket sesion.
 583                  * One is to set a random session ID and then the server
 584                  * must return a match in ServerHello. This allows the normal
 585                  * client session ID matching to work.
 586                  */
 587                 if (ret->session_id_length == 0)
 588                         {
 589                         ret->session_id_length=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 590                         RAND_pseudo_bytes(ret->session_id,
 591                                                 ret->session_id_length);
 592                         }
 593 #endif
 594                 }
 595         else
 596                 ret->tlsext_tick=NULL;
 597 #endif /* OPENSSL_NO_TLSEXT */
 598 #ifndef OPENSSL_NO_COMP
 599         os.length=0;
 600         os.data=NULL;
 601         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,11);
 602         if (os.data)
 603                 {
 604                 ret->compress_meth = os.data[0];
 605                 OPENSSL_free(os.data);
 606                 os.data = NULL;
 607                 }
 608 #endif
 609
 610         M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
 611         }