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 #ifndef OPENSSL_NO_SRP
 119         ASN1_OCTET_STRING srp_username;
 120 #endif /* OPENSSL_NO_SRP */
 121         } SSL_SESSION_ASN1;
 122
 123 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
 124         {
 125 #define LSIZE2 (sizeof(long)*2)
 126         int v1=0,v2=0,v3=0,v4=0,v5=0,v7=0,v8=0;
 127         unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
 128         unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
 129 #ifndef OPENSSL_NO_TLSEXT
 130         int v6=0,v9=0,v10=0;
 131         unsigned char ibuf6[LSIZE2];
 132 #endif
 133 #ifndef OPENSSL_NO_COMP
 134         unsigned char cbuf;
 135         int v11=0;
 136 #endif
 137 #ifndef OPENSSL_NO_SRP
 138         int v12=0;
 139 #endif
 140         long l;
 141         SSL_SESSION_ASN1 a;
 142         M_ASN1_I2D_vars(in);
 143
 144         if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
 145                 return(0);
 146
 147         /* Note that I cheat in the following 2 assignments.  I know
 148          * that if the ASN1_INTEGER passed to ASN1_INTEGER_set
 149          * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
 150          * This is a bit evil but makes things simple, no dynamic allocation
 151          * to clean up :-) */
 152         a.version.length=LSIZE2;
 153         a.version.type=V_ASN1_INTEGER;
 154         a.version.data=ibuf1;
 155         ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
 156
 157         a.ssl_version.length=LSIZE2;
 158         a.ssl_version.type=V_ASN1_INTEGER;
 159         a.ssl_version.data=ibuf2;
 160         ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
 161
 162         a.cipher.type=V_ASN1_OCTET_STRING;
 163         a.cipher.data=buf;
 164
 165         if (in->cipher == NULL)
 166                 l=in->cipher_id;
 167         else
 168                 l=in->cipher->id;
 169         if (in->ssl_version == SSL2_VERSION)
 170                 {
 171                 a.cipher.length=3;
 172                 buf[0]=((unsigned char)(l>>16L))&0xff;
 173                 buf[1]=((unsigned char)(l>> 8L))&0xff;
 174                 buf[2]=((unsigned char)(l     ))&0xff;
 175                 }
 176         else
 177                 {
 178                 a.cipher.length=2;
 179                 buf[0]=((unsigned char)(l>>8L))&0xff;
 180                 buf[1]=((unsigned char)(l    ))&0xff;
 181                 }
 182
 183 #ifndef OPENSSL_NO_COMP
 184         if (in->compress_meth)
 185                 {
 186                 cbuf = (unsigned char)in->compress_meth;
 187                 a.comp_id.length = 1;
 188                 a.comp_id.type = V_ASN1_OCTET_STRING;
 189                 a.comp_id.data = &cbuf;
 190                 }
 191 #endif
 192
 193         a.master_key.length=in->master_key_length;
 194         a.master_key.type=V_ASN1_OCTET_STRING;
 195         a.master_key.data=in->master_key;
 196
 197         a.session_id.length=in->session_id_length;
 198         a.session_id.type=V_ASN1_OCTET_STRING;
 199         a.session_id.data=in->session_id;
 200
 201         a.session_id_context.length=in->sid_ctx_length;
 202         a.session_id_context.type=V_ASN1_OCTET_STRING;
 203         a.session_id_context.data=in->sid_ctx;
 204
 205         a.key_arg.length=in->key_arg_length;
 206         a.key_arg.type=V_ASN1_OCTET_STRING;
 207         a.key_arg.data=in->key_arg;
 208
 209 #ifndef OPENSSL_NO_KRB5
 210         if (in->krb5_client_princ_len)
 211                 {
 212                 a.krb5_princ.length=in->krb5_client_princ_len;
 213                 a.krb5_princ.type=V_ASN1_OCTET_STRING;
 214                 a.krb5_princ.data=in->krb5_client_princ;
 215                 }
 216 #endif /* OPENSSL_NO_KRB5 */
 217
 218         if (in->time != 0L)
 219                 {
 220                 a.time.length=LSIZE2;
 221                 a.time.type=V_ASN1_INTEGER;
 222                 a.time.data=ibuf3;
 223                 ASN1_INTEGER_set(&(a.time),in->time);
 224                 }
 225
 226         if (in->timeout != 0L)
 227                 {
 228                 a.timeout.length=LSIZE2;
 229                 a.timeout.type=V_ASN1_INTEGER;
 230                 a.timeout.data=ibuf4;
 231                 ASN1_INTEGER_set(&(a.timeout),in->timeout);
 232                 }
 233
 234         if (in->verify_result != X509_V_OK)
 235                 {
 236                 a.verify_result.length=LSIZE2;
 237                 a.verify_result.type=V_ASN1_INTEGER;
 238                 a.verify_result.data=ibuf5;
 239                 ASN1_INTEGER_set(&a.verify_result,in->verify_result);
 240                 }
 241
 242 #ifndef OPENSSL_NO_TLSEXT
 243         if (in->tlsext_hostname)
 244                 {
 245                 a.tlsext_hostname.length=strlen(in->tlsext_hostname);
 246                 a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
 247                 a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
 248                 }
 249         if (in->tlsext_tick)
 250                 {
 251                 a.tlsext_tick.length= in->tlsext_ticklen;
 252                 a.tlsext_tick.type=V_ASN1_OCTET_STRING;
 253                 a.tlsext_tick.data=(unsigned char *)in->tlsext_tick;
 254                 }
 255         if (in->tlsext_tick_lifetime_hint > 0)
 256                 {
 257                 a.tlsext_tick_lifetime.length=LSIZE2;
 258                 a.tlsext_tick_lifetime.type=V_ASN1_INTEGER;
 259                 a.tlsext_tick_lifetime.data=ibuf6;
 260                 ASN1_INTEGER_set(&a.tlsext_tick_lifetime,in->tlsext_tick_lifetime_hint);
 261                 }
 262 #endif /* OPENSSL_NO_TLSEXT */
 263 #ifndef OPENSSL_NO_PSK
 264         if (in->psk_identity_hint)
 265                 {
 266                 a.psk_identity_hint.length=strlen(in->psk_identity_hint);
 267                 a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
 268                 a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
 269                 }
 270         if (in->psk_identity)
 271                 {
 272                 a.psk_identity.length=strlen(in->psk_identity);
 273                 a.psk_identity.type=V_ASN1_OCTET_STRING;
 274                 a.psk_identity.data=(unsigned char *)(in->psk_identity);
 275                 }
 276 #endif /* OPENSSL_NO_PSK */
 277 #ifndef OPENSSL_NO_SRP
 278         if (in->srp_username)
 279                 {
 280                 a.srp_username.length=strlen(in->srp_username);
 281                 a.srp_username.type=V_ASN1_OCTET_STRING;
 282                 a.srp_username.data=(unsigned char *)(in->srp_username);
 283                 }
 284 #endif /* OPENSSL_NO_SRP */
 285
 286         M_ASN1_I2D_len(&(a.version),            i2d_ASN1_INTEGER);
 287         M_ASN1_I2D_len(&(a.ssl_version),        i2d_ASN1_INTEGER);
 288         M_ASN1_I2D_len(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 289         M_ASN1_I2D_len(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 290         M_ASN1_I2D_len(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 291 #ifndef OPENSSL_NO_KRB5
 292         if (in->krb5_client_princ_len)
 293                 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 294 #endif /* OPENSSL_NO_KRB5 */
 295         if (in->key_arg_length > 0)
 296                 M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
 297         if (in->time != 0L)
 298                 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 299         if (in->timeout != 0L)
 300                 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 301         if (in->peer != NULL)
 302                 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
 303         M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
 304         if (in->verify_result != X509_V_OK)
 305                 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
 306
 307 #ifndef OPENSSL_NO_TLSEXT
 308         if (in->tlsext_tick_lifetime_hint > 0)
 309                 M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 310         if (in->tlsext_tick)
 311                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 312         if (in->tlsext_hostname)
 313                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 314 #ifndef OPENSSL_NO_COMP
 315         if (in->compress_meth)
 316                 M_ASN1_I2D_len_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
 317 #endif
 318 #endif /* OPENSSL_NO_TLSEXT */
 319 #ifndef OPENSSL_NO_PSK
 320         if (in->psk_identity_hint)
 321                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 322         if (in->psk_identity)
 323                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 324 #endif /* OPENSSL_NO_PSK */
 325 #ifndef OPENSSL_NO_SRP
 326         if (in->srp_username)
 327                 M_ASN1_I2D_len_EXP_opt(&(a.srp_username), i2d_ASN1_OCTET_STRING,12,v12);
 328 #endif /* OPENSSL_NO_SRP */
 329
 330         M_ASN1_I2D_seq_total();
 331
 332         M_ASN1_I2D_put(&(a.version),            i2d_ASN1_INTEGER);
 333         M_ASN1_I2D_put(&(a.ssl_version),        i2d_ASN1_INTEGER);
 334         M_ASN1_I2D_put(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 335         M_ASN1_I2D_put(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 336         M_ASN1_I2D_put(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 337 #ifndef OPENSSL_NO_KRB5
 338         if (in->krb5_client_princ_len)
 339                 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 340 #endif /* OPENSSL_NO_KRB5 */
 341         if (in->key_arg_length > 0)
 342                 M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
 343         if (in->time != 0L)
 344                 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 345         if (in->timeout != 0L)
 346                 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 347         if (in->peer != NULL)
 348                 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
 349         M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
 350                                v4);
 351         if (in->verify_result != X509_V_OK)
 352                 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
 353 #ifndef OPENSSL_NO_TLSEXT
 354         if (in->tlsext_hostname)
 355                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 356 #endif /* OPENSSL_NO_TLSEXT */
 357 #ifndef OPENSSL_NO_PSK
 358         if (in->psk_identity_hint)
 359                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 360         if (in->psk_identity)
 361                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 362 #endif /* OPENSSL_NO_PSK */
 363 #ifndef OPENSSL_NO_TLSEXT
 364         if (in->tlsext_tick_lifetime_hint > 0)
 365                 M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 366         if (in->tlsext_tick)
 367                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 368 #endif /* OPENSSL_NO_TLSEXT */
 369 #ifndef OPENSSL_NO_COMP
 370         if (in->compress_meth)
 371                 M_ASN1_I2D_put_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
 372 #endif
 373 #ifndef OPENSSL_NO_SRP
 374         if (in->srp_username)
 375                 M_ASN1_I2D_put_EXP_opt(&(a.srp_username), i2d_ASN1_OCTET_STRING,12,v12);
 376 #endif /* OPENSSL_NO_SRP */
 377         M_ASN1_I2D_finish();
 378         }
 379
 380 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 381                              long length)
 382         {
 383         int ssl_version=0,i;
 384         long id;
 385         ASN1_INTEGER ai,*aip;
 386         ASN1_OCTET_STRING os,*osp;
 387         M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
 388
 389         aip= &ai;
 390         osp= &os;
 391
 392         M_ASN1_D2I_Init();
 393         M_ASN1_D2I_start_sequence();
 394
 395         ai.data=NULL; ai.length=0;
 396         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 397         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 398
 399         /* we don't care about the version right now :-) */
 400         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 401         ssl_version=(int)ASN1_INTEGER_get(aip);
 402         ret->ssl_version=ssl_version;
 403         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 404
 405         os.data=NULL; os.length=0;
 406         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 407         if (ssl_version == SSL2_VERSION)
 408                 {
 409                 if (os.length != 3)
 410                         {
 411                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 412                         goto err;
 413                         }
 414                 id=0x02000000L|
 415                         ((unsigned long)os.data[0]<<16L)|
 416                         ((unsigned long)os.data[1]<< 8L)|
 417                          (unsigned long)os.data[2];
 418                 }
 419         else if ((ssl_version>>8) >= SSL3_VERSION_MAJOR)
 420                 {
 421                 if (os.length != 2)
 422                         {
 423                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 424                         goto err;
 425                         }
 426                 id=0x03000000L|
 427                         ((unsigned long)os.data[0]<<8L)|
 428                          (unsigned long)os.data[1];
 429                 }
 430         else
 431                 {
 432                 c.error=SSL_R_UNKNOWN_SSL_VERSION;
 433                 goto err;
 434                 }
 435
 436         ret->cipher=NULL;
 437         ret->cipher_id=id;
 438
 439         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 440         if ((ssl_version>>8) >= SSL3_VERSION_MAJOR)
 441                 i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 442         else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
 443                 i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
 444
 445         if (os.length > i)
 446                 os.length = i;
 447         if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
 448                 os.length = sizeof(ret->session_id);
 449
 450         ret->session_id_length=os.length;
 451         OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
 452         memcpy(ret->session_id,os.data,os.length);
 453
 454         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 455         if (os.length > SSL_MAX_MASTER_KEY_LENGTH)
 456                 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
 457         else
 458                 ret->master_key_length=os.length;
 459         memcpy(ret->master_key,os.data,ret->master_key_length);
 460
 461         os.length=0;
 462
 463 #ifndef OPENSSL_NO_KRB5
 464         os.length=0;
 465         M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
 466         if (os.data)
 467                 {
 468                 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
 469                         ret->krb5_client_princ_len=0;
 470                 else
 471                         ret->krb5_client_princ_len=os.length;
 472                 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
 473                 OPENSSL_free(os.data);
 474                 os.data = NULL;
 475                 os.length = 0;
 476                 }
 477         else
 478                 ret->krb5_client_princ_len=0;
 479 #endif /* OPENSSL_NO_KRB5 */
 480
 481         M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
 482         if (os.length > SSL_MAX_KEY_ARG_LENGTH)
 483                 ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
 484         else
 485                 ret->key_arg_length=os.length;
 486         memcpy(ret->key_arg,os.data,ret->key_arg_length);
 487         if (os.data != NULL) OPENSSL_free(os.data);
 488
 489         ai.length=0;
 490         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
 491         if (ai.data != NULL)
 492                 {
 493                 ret->time=ASN1_INTEGER_get(aip);
 494                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 495                 }
 496         else
 497                 ret->time=(unsigned long)time(NULL);
 498
 499         ai.length=0;
 500         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
 501         if (ai.data != NULL)
 502                 {
 503                 ret->timeout=ASN1_INTEGER_get(aip);
 504                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 505                 }
 506         else
 507                 ret->timeout=3;
 508
 509         if (ret->peer != NULL)
 510                 {
 511                 X509_free(ret->peer);
 512                 ret->peer=NULL;
 513                 }
 514         M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
 515
 516         os.length=0;
 517         os.data=NULL;
 518         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
 519
 520         if(os.data != NULL)
 521             {
 522             if (os.length > SSL_MAX_SID_CTX_LENGTH)
 523                 {
 524                 c.error=SSL_R_BAD_LENGTH;
 525                 goto err;
 526                 }
 527             else
 528                 {
 529                 ret->sid_ctx_length=os.length;
 530                 memcpy(ret->sid_ctx,os.data,os.length);
 531                 }
 532             OPENSSL_free(os.data); os.data=NULL; os.length=0;
 533             }
 534         else
 535             ret->sid_ctx_length=0;
 536
 537         ai.length=0;
 538         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
 539         if (ai.data != NULL)
 540                 {
 541                 ret->verify_result=ASN1_INTEGER_get(aip);
 542                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 543                 }
 544         else
 545                 ret->verify_result=X509_V_OK;
 546
 547 #ifndef OPENSSL_NO_TLSEXT
 548         os.length=0;
 549         os.data=NULL;
 550         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
 551         if (os.data)
 552                 {
 553                 ret->tlsext_hostname = 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->tlsext_hostname=NULL;
 560 #endif /* OPENSSL_NO_TLSEXT */
 561
 562 #ifndef OPENSSL_NO_PSK
 563         os.length=0;
 564         os.data=NULL;
 565         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7);
 566         if (os.data)
 567                 {
 568                 ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length);
 569                 OPENSSL_free(os.data);
 570                 os.data = NULL;
 571                 os.length = 0;
 572                 }
 573         else
 574                 ret->psk_identity_hint=NULL;
 575
 576         os.length=0;
 577         os.data=NULL;
 578         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,8);
 579         if (os.data)
 580                 {
 581                 ret->psk_identity = BUF_strndup((char *)os.data, os.length);
 582                 OPENSSL_free(os.data);
 583                 os.data = NULL;
 584                 os.length = 0;
 585                 }
 586         else
 587                 ret->psk_identity=NULL;
 588 #endif /* OPENSSL_NO_PSK */
 589
 590 #ifndef OPENSSL_NO_TLSEXT
 591         ai.length=0;
 592         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,9);
 593         if (ai.data != NULL)
 594                 {
 595                 ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip);
 596                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 597                 }
 598         else if (ret->tlsext_ticklen && ret->session_id_length)
 599                 ret->tlsext_tick_lifetime_hint = -1;
 600         else
 601                 ret->tlsext_tick_lifetime_hint=0;
 602         os.length=0;
 603         os.data=NULL;
 604         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
 605         if (os.data)
 606                 {
 607                 ret->tlsext_tick = os.data;
 608                 ret->tlsext_ticklen = os.length;
 609                 os.data = NULL;
 610                 os.length = 0;
 611                 }
 612         else
 613                 ret->tlsext_tick=NULL;
 614 #endif /* OPENSSL_NO_TLSEXT */
 615 #ifndef OPENSSL_NO_COMP
 616         os.length=0;
 617         os.data=NULL;
 618         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,11);
 619         if (os.data)
 620                 {
 621                 ret->compress_meth = os.data[0];
 622                 OPENSSL_free(os.data);
 623                 os.data = NULL;
 624                 }
 625 #endif
 626
 627 #ifndef OPENSSL_NO_SRP
 628         os.length=0;
 629         os.data=NULL;
 630         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,12);
 631         if (os.data)
 632                 {
 633                 ret->srp_username = BUF_strndup((char *)os.data, os.length);
 634                 OPENSSL_free(os.data);
 635                 os.data = NULL;
 636                 os.length = 0;
 637                 }
 638         else
 639                 ret->srp_username=NULL;
 640 #endif /* OPENSSL_NO_SRP */
 641
 642         M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
 643         }