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 #ifndef OPENSSL_NO_SRP
 118         ASN1_OCTET_STRING srp_username;
 119 #endif /* OPENSSL_NO_SRP */
 120         } SSL_SESSION_ASN1;
 121
 122 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
 123         {
 124 #define LSIZE2 (sizeof(long)*2)
 125         int v1=0,v2=0,v3=0,v4=0,v5=0,v7=0,v8=0;
 126         unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
 127         unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
 128 #ifndef OPENSSL_NO_TLSEXT
 129         int v6=0,v9=0,v10=0;
 130         unsigned char ibuf6[LSIZE2];
 131 #endif
 132 #ifndef OPENSSL_NO_COMP
 133         unsigned char cbuf;
 134         int v11=0;
 135 #endif
 136 #ifndef OPENSSL_NO_SRP
 137         int v12=0;
 138 #endif
 139         long l;
 140         SSL_SESSION_ASN1 a;
 141         M_ASN1_I2D_vars(in);
 142
 143         if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
 144                 return(0);
 145
 146         /* Note that I cheat in the following 2 assignments.  I know
 147          * that if the ASN1_INTEGER passed to ASN1_INTEGER_set
 148          * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
 149          * This is a bit evil but makes things simple, no dynamic allocation
 150          * to clean up :-) */
 151         a.version.length=LSIZE2;
 152         a.version.type=V_ASN1_INTEGER;
 153         a.version.data=ibuf1;
 154         ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
 155
 156         a.ssl_version.length=LSIZE2;
 157         a.ssl_version.type=V_ASN1_INTEGER;
 158         a.ssl_version.data=ibuf2;
 159         ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
 160
 161         a.cipher.type=V_ASN1_OCTET_STRING;
 162         a.cipher.data=buf;
 163
 164         if (in->cipher == NULL)
 165                 l=in->cipher_id;
 166         else
 167                 l=in->cipher->id;
 168         if (in->ssl_version == SSL2_VERSION)
 169                 {
 170                 a.cipher.length=3;
 171                 buf[0]=((unsigned char)(l>>16L))&0xff;
 172                 buf[1]=((unsigned char)(l>> 8L))&0xff;
 173                 buf[2]=((unsigned char)(l     ))&0xff;
 174                 }
 175         else
 176                 {
 177                 a.cipher.length=2;
 178                 buf[0]=((unsigned char)(l>>8L))&0xff;
 179                 buf[1]=((unsigned char)(l    ))&0xff;
 180                 }
 181
 182 #ifndef OPENSSL_NO_COMP
 183         if (in->compress_meth)
 184                 {
 185                 cbuf = (unsigned char)in->compress_meth;
 186                 a.comp_id.length = 1;
 187                 a.comp_id.type = V_ASN1_OCTET_STRING;
 188                 a.comp_id.data = &cbuf;
 189                 }
 190 #endif
 191
 192         a.master_key.length=in->master_key_length;
 193         a.master_key.type=V_ASN1_OCTET_STRING;
 194         a.master_key.data=in->master_key;
 195
 196         a.session_id.length=in->session_id_length;
 197         a.session_id.type=V_ASN1_OCTET_STRING;
 198         a.session_id.data=in->session_id;
 199
 200         a.session_id_context.length=in->sid_ctx_length;
 201         a.session_id_context.type=V_ASN1_OCTET_STRING;
 202         a.session_id_context.data=in->sid_ctx;
 203
 204         a.key_arg.length=in->key_arg_length;
 205         a.key_arg.type=V_ASN1_OCTET_STRING;
 206         a.key_arg.data=in->key_arg;
 207
 208 #ifndef OPENSSL_NO_KRB5
 209         if (in->krb5_client_princ_len)
 210                 {
 211                 a.krb5_princ.length=in->krb5_client_princ_len;
 212                 a.krb5_princ.type=V_ASN1_OCTET_STRING;
 213                 a.krb5_princ.data=in->krb5_client_princ;
 214                 }
 215 #endif /* OPENSSL_NO_KRB5 */
 216
 217         if (in->time != 0L)
 218                 {
 219                 a.time.length=LSIZE2;
 220                 a.time.type=V_ASN1_INTEGER;
 221                 a.time.data=ibuf3;
 222                 ASN1_INTEGER_set(&(a.time),in->time);
 223                 }
 224
 225         if (in->timeout != 0L)
 226                 {
 227                 a.timeout.length=LSIZE2;
 228                 a.timeout.type=V_ASN1_INTEGER;
 229                 a.timeout.data=ibuf4;
 230                 ASN1_INTEGER_set(&(a.timeout),in->timeout);
 231                 }
 232
 233         if (in->verify_result != X509_V_OK)
 234                 {
 235                 a.verify_result.length=LSIZE2;
 236                 a.verify_result.type=V_ASN1_INTEGER;
 237                 a.verify_result.data=ibuf5;
 238                 ASN1_INTEGER_set(&a.verify_result,in->verify_result);
 239                 }
 240
 241 #ifndef OPENSSL_NO_TLSEXT
 242         if (in->tlsext_hostname)
 243                 {
 244                 a.tlsext_hostname.length=strlen(in->tlsext_hostname);
 245                 a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
 246                 a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
 247                 }
 248         if (in->tlsext_tick)
 249                 {
 250                 a.tlsext_tick.length= in->tlsext_ticklen;
 251                 a.tlsext_tick.type=V_ASN1_OCTET_STRING;
 252                 a.tlsext_tick.data=(unsigned char *)in->tlsext_tick;
 253                 }
 254         if (in->tlsext_tick_lifetime_hint > 0)
 255                 {
 256                 a.tlsext_tick_lifetime.length=LSIZE2;
 257                 a.tlsext_tick_lifetime.type=V_ASN1_INTEGER;
 258                 a.tlsext_tick_lifetime.data=ibuf6;
 259                 ASN1_INTEGER_set(&a.tlsext_tick_lifetime,in->tlsext_tick_lifetime_hint);
 260                 }
 261 #endif /* OPENSSL_NO_TLSEXT */
 262 #ifndef OPENSSL_NO_PSK
 263         if (in->psk_identity_hint)
 264                 {
 265                 a.psk_identity_hint.length=strlen(in->psk_identity_hint);
 266                 a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
 267                 a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
 268                 }
 269         if (in->psk_identity)
 270                 {
 271                 a.psk_identity.length=strlen(in->psk_identity);
 272                 a.psk_identity.type=V_ASN1_OCTET_STRING;
 273                 a.psk_identity.data=(unsigned char *)(in->psk_identity);
 274                 }
 275 #endif /* OPENSSL_NO_PSK */
 276 #ifndef OPENSSL_NO_SRP
 277         if (in->srp_username)
 278                 {
 279                 a.srp_username.length=strlen(in->srp_username);
 280                 a.srp_username.type=V_ASN1_OCTET_STRING;
 281                 a.srp_username.data=(unsigned char *)(in->srp_username);
 282                 }
 283 #endif /* OPENSSL_NO_SRP */
 284
 285         M_ASN1_I2D_len(&(a.version),            i2d_ASN1_INTEGER);
 286         M_ASN1_I2D_len(&(a.ssl_version),        i2d_ASN1_INTEGER);
 287         M_ASN1_I2D_len(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 288         M_ASN1_I2D_len(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 289         M_ASN1_I2D_len(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 290 #ifndef OPENSSL_NO_KRB5
 291         if (in->krb5_client_princ_len)
 292                 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 293 #endif /* OPENSSL_NO_KRB5 */
 294         if (in->key_arg_length > 0)
 295                 M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
 296         if (in->time != 0L)
 297                 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 298         if (in->timeout != 0L)
 299                 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 300         if (in->peer != NULL)
 301                 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
 302         M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
 303         if (in->verify_result != X509_V_OK)
 304                 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
 305
 306 #ifndef OPENSSL_NO_TLSEXT
 307         if (in->tlsext_tick_lifetime_hint > 0)
 308                 M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 309         if (in->tlsext_tick)
 310                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 311         if (in->tlsext_hostname)
 312                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 313 #ifndef OPENSSL_NO_COMP
 314         if (in->compress_meth)
 315                 M_ASN1_I2D_len_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
 316 #endif
 317 #endif /* OPENSSL_NO_TLSEXT */
 318 #ifndef OPENSSL_NO_PSK
 319         if (in->psk_identity_hint)
 320                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 321         if (in->psk_identity)
 322                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 323 #endif /* OPENSSL_NO_PSK */
 324 #ifndef OPENSSL_NO_SRP
 325         if (in->srp_username)
 326                 M_ASN1_I2D_len_EXP_opt(&(a.srp_username), i2d_ASN1_OCTET_STRING,12,v12);
 327 #endif /* OPENSSL_NO_SRP */
 328
 329         M_ASN1_I2D_seq_total();
 330
 331         M_ASN1_I2D_put(&(a.version),            i2d_ASN1_INTEGER);
 332         M_ASN1_I2D_put(&(a.ssl_version),        i2d_ASN1_INTEGER);
 333         M_ASN1_I2D_put(&(a.cipher),             i2d_ASN1_OCTET_STRING);
 334         M_ASN1_I2D_put(&(a.session_id),         i2d_ASN1_OCTET_STRING);
 335         M_ASN1_I2D_put(&(a.master_key),         i2d_ASN1_OCTET_STRING);
 336 #ifndef OPENSSL_NO_KRB5
 337         if (in->krb5_client_princ_len)
 338                 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 339 #endif /* OPENSSL_NO_KRB5 */
 340         if (in->key_arg_length > 0)
 341                 M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
 342         if (in->time != 0L)
 343                 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
 344         if (in->timeout != 0L)
 345                 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
 346         if (in->peer != NULL)
 347                 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
 348         M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
 349                                v4);
 350         if (in->verify_result != X509_V_OK)
 351                 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
 352 #ifndef OPENSSL_NO_TLSEXT
 353         if (in->tlsext_hostname)
 354                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
 355 #endif /* OPENSSL_NO_TLSEXT */
 356 #ifndef OPENSSL_NO_PSK
 357         if (in->psk_identity_hint)
 358                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
 359         if (in->psk_identity)
 360                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 361 #endif /* OPENSSL_NO_PSK */
 362 #ifndef OPENSSL_NO_TLSEXT
 363         if (in->tlsext_tick_lifetime_hint > 0)
 364                 M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
 365         if (in->tlsext_tick)
 366                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
 367 #endif /* OPENSSL_NO_TLSEXT */
 368 #ifndef OPENSSL_NO_COMP
 369         if (in->compress_meth)
 370                 M_ASN1_I2D_put_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
 371 #endif
 372 #ifndef OPENSSL_NO_SRP
 373         if (in->srp_username)
 374                 M_ASN1_I2D_put_EXP_opt(&(a.srp_username), i2d_ASN1_OCTET_STRING,12,v12);
 375 #endif /* OPENSSL_NO_SRP */
 376         M_ASN1_I2D_finish();
 377         }
 378
 379 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 380                              long length)
 381         {
 382         int ssl_version=0,i;
 383         long id;
 384         ASN1_INTEGER ai,*aip;
 385         ASN1_OCTET_STRING os,*osp;
 386         M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
 387
 388         aip= &ai;
 389         osp= &os;
 390
 391         M_ASN1_D2I_Init();
 392         M_ASN1_D2I_start_sequence();
 393
 394         ai.data=NULL; ai.length=0;
 395         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 396         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 397
 398         /* we don't care about the version right now :-) */
 399         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
 400         ssl_version=(int)ASN1_INTEGER_get(aip);
 401         ret->ssl_version=ssl_version;
 402         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
 403
 404         os.data=NULL; os.length=0;
 405         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 406         if (ssl_version == SSL2_VERSION)
 407                 {
 408                 if (os.length != 3)
 409                         {
 410                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 411                         goto err;
 412                         }
 413                 id=0x02000000L|
 414                         ((unsigned long)os.data[0]<<16L)|
 415                         ((unsigned long)os.data[1]<< 8L)|
 416                          (unsigned long)os.data[2];
 417                 }
 418         else if ((ssl_version>>8) >= SSL3_VERSION_MAJOR)
 419                 {
 420                 if (os.length != 2)
 421                         {
 422                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
 423                         goto err;
 424                         }
 425                 id=0x03000000L|
 426                         ((unsigned long)os.data[0]<<8L)|
 427                          (unsigned long)os.data[1];
 428                 }
 429         else
 430                 {
 431                 c.error=SSL_R_UNKNOWN_SSL_VERSION;
 432                 goto err;
 433                 }
 434
 435         ret->cipher=NULL;
 436         ret->cipher_id=id;
 437
 438         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 439         if ((ssl_version>>8) >= SSL3_VERSION_MAJOR)
 440                 i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
 441         else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
 442                 i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
 443
 444         if (os.length > i)
 445                 os.length = i;
 446         if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
 447                 os.length = sizeof(ret->session_id);
 448
 449         ret->session_id_length=os.length;
 450         OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
 451         memcpy(ret->session_id,os.data,os.length);
 452
 453         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
 454         if (os.length > SSL_MAX_MASTER_KEY_LENGTH)
 455                 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
 456         else
 457                 ret->master_key_length=os.length;
 458         memcpy(ret->master_key,os.data,ret->master_key_length);
 459
 460         os.length=0;
 461
 462 #ifndef OPENSSL_NO_KRB5
 463         os.length=0;
 464         M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
 465         if (os.data)
 466                 {
 467                 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
 468                         ret->krb5_client_princ_len=0;
 469                 else
 470                         ret->krb5_client_princ_len=os.length;
 471                 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
 472                 OPENSSL_free(os.data);
 473                 os.data = NULL;
 474                 os.length = 0;
 475                 }
 476         else
 477                 ret->krb5_client_princ_len=0;
 478 #endif /* OPENSSL_NO_KRB5 */
 479
 480         M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
 481         if (os.length > SSL_MAX_KEY_ARG_LENGTH)
 482                 ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
 483         else
 484                 ret->key_arg_length=os.length;
 485         memcpy(ret->key_arg,os.data,ret->key_arg_length);
 486         if (os.data != NULL) OPENSSL_free(os.data);
 487
 488         ai.length=0;
 489         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
 490         if (ai.data != NULL)
 491                 {
 492                 ret->time=ASN1_INTEGER_get(aip);
 493                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 494                 }
 495         else
 496                 ret->time=(unsigned long)time(NULL);
 497
 498         ai.length=0;
 499         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
 500         if (ai.data != NULL)
 501                 {
 502                 ret->timeout=ASN1_INTEGER_get(aip);
 503                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 504                 }
 505         else
 506                 ret->timeout=3;
 507
 508         if (ret->peer != NULL)
 509                 {
 510                 X509_free(ret->peer);
 511                 ret->peer=NULL;
 512                 }
 513         M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
 514
 515         os.length=0;
 516         os.data=NULL;
 517         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
 518
 519         if(os.data != NULL)
 520             {
 521             if (os.length > SSL_MAX_SID_CTX_LENGTH)
 522                 {
 523                 c.error=SSL_R_BAD_LENGTH;
 524                 goto err;
 525                 }
 526             else
 527                 {
 528                 ret->sid_ctx_length=os.length;
 529                 memcpy(ret->sid_ctx,os.data,os.length);
 530                 }
 531             OPENSSL_free(os.data); os.data=NULL; os.length=0;
 532             }
 533         else
 534             ret->sid_ctx_length=0;
 535
 536         ai.length=0;
 537         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
 538         if (ai.data != NULL)
 539                 {
 540                 ret->verify_result=ASN1_INTEGER_get(aip);
 541                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 542                 }
 543         else
 544                 ret->verify_result=X509_V_OK;
 545
 546 #ifndef OPENSSL_NO_TLSEXT
 547         os.length=0;
 548         os.data=NULL;
 549         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
 550         if (os.data)
 551                 {
 552                 ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
 553                 OPENSSL_free(os.data);
 554                 os.data = NULL;
 555                 os.length = 0;
 556                 }
 557         else
 558                 ret->tlsext_hostname=NULL;
 559 #endif /* OPENSSL_NO_TLSEXT */
 560
 561 #ifndef OPENSSL_NO_PSK
 562         os.length=0;
 563         os.data=NULL;
 564         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7);
 565         if (os.data)
 566                 {
 567                 ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length);
 568                 OPENSSL_free(os.data);
 569                 os.data = NULL;
 570                 os.length = 0;
 571                 }
 572         else
 573                 ret->psk_identity_hint=NULL;
 574
 575         os.length=0;
 576         os.data=NULL;
 577         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,8);
 578         if (os.data)
 579                 {
 580                 ret->psk_identity = BUF_strndup((char *)os.data, os.length);
 581                 OPENSSL_free(os.data);
 582                 os.data = NULL;
 583                 os.length = 0;
 584                 }
 585         else
 586                 ret->psk_identity=NULL;
 587 #endif /* OPENSSL_NO_PSK */
 588
 589 #ifndef OPENSSL_NO_TLSEXT
 590         ai.length=0;
 591         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,9);
 592         if (ai.data != NULL)
 593                 {
 594                 ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip);
 595                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
 596                 }
 597         else if (ret->tlsext_ticklen && ret->session_id_length)
 598                 ret->tlsext_tick_lifetime_hint = -1;
 599         else
 600                 ret->tlsext_tick_lifetime_hint=0;
 601         os.length=0;
 602         os.data=NULL;
 603         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
 604         if (os.data)
 605                 {
 606                 ret->tlsext_tick = os.data;
 607                 ret->tlsext_ticklen = os.length;
 608                 os.data = NULL;
 609                 os.length = 0;
 610                 }
 611         else
 612                 ret->tlsext_tick=NULL;
 613 #endif /* OPENSSL_NO_TLSEXT */
 614 #ifndef OPENSSL_NO_COMP
 615         os.length=0;
 616         os.data=NULL;
 617         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,11);
 618         if (os.data)
 619                 {
 620                 ret->compress_meth = os.data[0];
 621                 OPENSSL_free(os.data);
 622                 os.data = NULL;
 623                 }
 624 #endif
 625
 626 #ifndef OPENSSL_NO_SRP
 627         os.length=0;
 628         os.data=NULL;
 629         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,12);
 630         if (os.data)
 631                 {
 632                 ret->srp_username = BUF_strndup((char *)os.data, os.length);
 633                 OPENSSL_free(os.data);
 634                 os.data = NULL;
 635                 os.length = 0;
 636                 }
 637         else
 638                 ret->srp_username=NULL;
 639 #endif /* OPENSSL_NO_SRP */
 640
 641         M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
 642         }