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     ASN1_INTEGER version;
  94     ASN1_INTEGER ssl_version;
  95     ASN1_OCTET_STRING cipher;
  96     ASN1_OCTET_STRING comp_id;
  97     ASN1_OCTET_STRING master_key;
  98     ASN1_OCTET_STRING session_id;
  99     ASN1_OCTET_STRING session_id_context;
 100     ASN1_OCTET_STRING key_arg;
 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;
 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_PSK
 132     int v7 = 0, v8 = 0;
 133 #endif
 134 #ifndef OPENSSL_NO_COMP
 135     unsigned char cbuf;
 136     int v11 = 0;
 137 #endif
 138 #ifndef OPENSSL_NO_SRP
 139     int v12 = 0;
 140 #endif
 141     long l;
 142     SSL_SESSION_ASN1 a;
 143     M_ASN1_I2D_vars(in);
 144
 145     if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
 146         return (0);
 147
 148     /*
 149      * Note that I cheat in the following 2 assignments.  I know that if the
 150      * ASN1_INTEGER passed to ASN1_INTEGER_set is > sizeof(long)+1, the
 151      * buffer will not be re-OPENSSL_malloc()ed. This is a bit evil but makes
 152      * things simple, no dynamic allocation to clean up :-)
 153      */
 154     a.version.length = LSIZE2;
 155     a.version.type = V_ASN1_INTEGER;
 156     a.version.data = ibuf1;
 157     ASN1_INTEGER_set(&(a.version), SSL_SESSION_ASN1_VERSION);
 158
 159     a.ssl_version.length = LSIZE2;
 160     a.ssl_version.type = V_ASN1_INTEGER;
 161     a.ssl_version.data = ibuf2;
 162     ASN1_INTEGER_set(&(a.ssl_version), in->ssl_version);
 163
 164     a.cipher.type = V_ASN1_OCTET_STRING;
 165     a.cipher.data = buf;
 166
 167     if (in->cipher == NULL)
 168         l = in->cipher_id;
 169     else
 170         l = in->cipher->id;
 171     if (in->ssl_version == SSL2_VERSION) {
 172         a.cipher.length = 3;
 173         buf[0] = ((unsigned char)(l >> 16L)) & 0xff;
 174         buf[1] = ((unsigned char)(l >> 8L)) & 0xff;
 175         buf[2] = ((unsigned char)(l)) & 0xff;
 176     } else {
 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         cbuf = (unsigned char)in->compress_meth;
 185         a.comp_id.length = 1;
 186         a.comp_id.type = V_ASN1_OCTET_STRING;
 187         a.comp_id.data = &cbuf;
 188     }
 189 #endif
 190
 191     a.master_key.length = in->master_key_length;
 192     a.master_key.type = V_ASN1_OCTET_STRING;
 193     a.master_key.data = in->master_key;
 194
 195     a.session_id.length = in->session_id_length;
 196     a.session_id.type = V_ASN1_OCTET_STRING;
 197     a.session_id.data = in->session_id;
 198
 199     a.session_id_context.length = in->sid_ctx_length;
 200     a.session_id_context.type = V_ASN1_OCTET_STRING;
 201     a.session_id_context.data = in->sid_ctx;
 202
 203     a.key_arg.length = in->key_arg_length;
 204     a.key_arg.type = V_ASN1_OCTET_STRING;
 205     a.key_arg.data = in->key_arg;
 206
 207 #ifndef OPENSSL_NO_KRB5
 208     if (in->krb5_client_princ_len) {
 209         a.krb5_princ.length = in->krb5_client_princ_len;
 210         a.krb5_princ.type = V_ASN1_OCTET_STRING;
 211         a.krb5_princ.data = in->krb5_client_princ;
 212     }
 213 #endif                          /* OPENSSL_NO_KRB5 */
 214
 215     if (in->time != 0L) {
 216         a.time.length = LSIZE2;
 217         a.time.type = V_ASN1_INTEGER;
 218         a.time.data = ibuf3;
 219         ASN1_INTEGER_set(&(a.time), in->time);
 220     }
 221
 222     if (in->timeout != 0L) {
 223         a.timeout.length = LSIZE2;
 224         a.timeout.type = V_ASN1_INTEGER;
 225         a.timeout.data = ibuf4;
 226         ASN1_INTEGER_set(&(a.timeout), in->timeout);
 227     }
 228
 229     if (in->verify_result != X509_V_OK) {
 230         a.verify_result.length = LSIZE2;
 231         a.verify_result.type = V_ASN1_INTEGER;
 232         a.verify_result.data = ibuf5;
 233         ASN1_INTEGER_set(&a.verify_result, in->verify_result);
 234     }
 235 #ifndef OPENSSL_NO_TLSEXT
 236     if (in->tlsext_hostname) {
 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         a.tlsext_tick.length = in->tlsext_ticklen;
 243         a.tlsext_tick.type = V_ASN1_OCTET_STRING;
 244         a.tlsext_tick.data = (unsigned char *)in->tlsext_tick;
 245     }
 246     if (in->tlsext_tick_lifetime_hint > 0) {
 247         a.tlsext_tick_lifetime.length = LSIZE2;
 248         a.tlsext_tick_lifetime.type = V_ASN1_INTEGER;
 249         a.tlsext_tick_lifetime.data = ibuf6;
 250         ASN1_INTEGER_set(&a.tlsext_tick_lifetime,
 251                          in->tlsext_tick_lifetime_hint);
 252     }
 253 #endif                          /* OPENSSL_NO_TLSEXT */
 254 #ifndef OPENSSL_NO_PSK
 255     if (in->psk_identity_hint) {
 256         a.psk_identity_hint.length = strlen(in->psk_identity_hint);
 257         a.psk_identity_hint.type = V_ASN1_OCTET_STRING;
 258         a.psk_identity_hint.data = (unsigned char *)(in->psk_identity_hint);
 259     }
 260     if (in->psk_identity) {
 261         a.psk_identity.length = strlen(in->psk_identity);
 262         a.psk_identity.type = V_ASN1_OCTET_STRING;
 263         a.psk_identity.data = (unsigned char *)(in->psk_identity);
 264     }
 265 #endif                          /* OPENSSL_NO_PSK */
 266 #ifndef OPENSSL_NO_SRP
 267     if (in->srp_username) {
 268         a.srp_username.length = strlen(in->srp_username);
 269         a.srp_username.type = V_ASN1_OCTET_STRING;
 270         a.srp_username.data = (unsigned char *)(in->srp_username);
 271     }
 272 #endif                          /* OPENSSL_NO_SRP */
 273
 274     M_ASN1_I2D_len(&(a.version), i2d_ASN1_INTEGER);
 275     M_ASN1_I2D_len(&(a.ssl_version), i2d_ASN1_INTEGER);
 276     M_ASN1_I2D_len(&(a.cipher), i2d_ASN1_OCTET_STRING);
 277     M_ASN1_I2D_len(&(a.session_id), i2d_ASN1_OCTET_STRING);
 278     M_ASN1_I2D_len(&(a.master_key), i2d_ASN1_OCTET_STRING);
 279 #ifndef OPENSSL_NO_KRB5
 280     if (in->krb5_client_princ_len)
 281         M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 282 #endif                          /* OPENSSL_NO_KRB5 */
 283     if (in->key_arg_length > 0)
 284         M_ASN1_I2D_len_IMP_opt(&(a.key_arg), i2d_ASN1_OCTET_STRING);
 285     if (in->time != 0L)
 286         M_ASN1_I2D_len_EXP_opt(&(a.time), i2d_ASN1_INTEGER, 1, v1);
 287     if (in->timeout != 0L)
 288         M_ASN1_I2D_len_EXP_opt(&(a.timeout), i2d_ASN1_INTEGER, 2, v2);
 289     if (in->peer != NULL)
 290         M_ASN1_I2D_len_EXP_opt(in->peer, i2d_X509, 3, v3);
 291     M_ASN1_I2D_len_EXP_opt(&a.session_id_context, i2d_ASN1_OCTET_STRING, 4,
 292                            v4);
 293     if (in->verify_result != X509_V_OK)
 294         M_ASN1_I2D_len_EXP_opt(&(a.verify_result), i2d_ASN1_INTEGER, 5, v5);
 295
 296 #ifndef OPENSSL_NO_TLSEXT
 297     if (in->tlsext_tick_lifetime_hint > 0)
 298         M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER, 9,
 299                                v9);
 300     if (in->tlsext_tick)
 301         M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING, 10,
 302                                v10);
 303     if (in->tlsext_hostname)
 304         M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING, 6,
 305                                v6);
 306 # ifndef OPENSSL_NO_COMP
 307     if (in->compress_meth)
 308         M_ASN1_I2D_len_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING, 11, v11);
 309 # endif
 310 #endif                          /* OPENSSL_NO_TLSEXT */
 311 #ifndef OPENSSL_NO_PSK
 312     if (in->psk_identity_hint)
 313         M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,
 314                                7, v7);
 315     if (in->psk_identity)
 316         M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING, 8,
 317                                v8);
 318 #endif                          /* OPENSSL_NO_PSK */
 319 #ifndef OPENSSL_NO_SRP
 320     if (in->srp_username)
 321         M_ASN1_I2D_len_EXP_opt(&(a.srp_username), i2d_ASN1_OCTET_STRING, 12,
 322                                v12);
 323 #endif                          /* OPENSSL_NO_SRP */
 324
 325     M_ASN1_I2D_seq_total();
 326
 327     M_ASN1_I2D_put(&(a.version), i2d_ASN1_INTEGER);
 328     M_ASN1_I2D_put(&(a.ssl_version), i2d_ASN1_INTEGER);
 329     M_ASN1_I2D_put(&(a.cipher), i2d_ASN1_OCTET_STRING);
 330     M_ASN1_I2D_put(&(a.session_id), i2d_ASN1_OCTET_STRING);
 331     M_ASN1_I2D_put(&(a.master_key), i2d_ASN1_OCTET_STRING);
 332 #ifndef OPENSSL_NO_KRB5
 333     if (in->krb5_client_princ_len)
 334         M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
 335 #endif                          /* OPENSSL_NO_KRB5 */
 336     if (in->key_arg_length > 0)
 337         M_ASN1_I2D_put_IMP_opt(&(a.key_arg), i2d_ASN1_OCTET_STRING, 0);
 338     if (in->time != 0L)
 339         M_ASN1_I2D_put_EXP_opt(&(a.time), i2d_ASN1_INTEGER, 1, v1);
 340     if (in->timeout != 0L)
 341         M_ASN1_I2D_put_EXP_opt(&(a.timeout), i2d_ASN1_INTEGER, 2, v2);
 342     if (in->peer != NULL)
 343         M_ASN1_I2D_put_EXP_opt(in->peer, i2d_X509, 3, v3);
 344     M_ASN1_I2D_put_EXP_opt(&a.session_id_context, i2d_ASN1_OCTET_STRING, 4,
 345                            v4);
 346     if (in->verify_result != X509_V_OK)
 347         M_ASN1_I2D_put_EXP_opt(&a.verify_result, i2d_ASN1_INTEGER, 5, v5);
 348 #ifndef OPENSSL_NO_TLSEXT
 349     if (in->tlsext_hostname)
 350         M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING, 6,
 351                                v6);
 352 #endif                          /* OPENSSL_NO_TLSEXT */
 353 #ifndef OPENSSL_NO_PSK
 354     if (in->psk_identity_hint)
 355         M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,
 356                                7, v7);
 357     if (in->psk_identity)
 358         M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING, 8,
 359                                v8);
 360 #endif                          /* OPENSSL_NO_PSK */
 361 #ifndef OPENSSL_NO_TLSEXT
 362     if (in->tlsext_tick_lifetime_hint > 0)
 363         M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER, 9,
 364                                v9);
 365     if (in->tlsext_tick)
 366         M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING, 10,
 367                                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,
 376                                v12);
 377 #endif                          /* OPENSSL_NO_SRP */
 378     M_ASN1_I2D_finish();
 379 }
 380
 381 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 382                              long length)
 383 {
 384     int ssl_version = 0, i;
 385     long id;
 386     ASN1_INTEGER ai, *aip;
 387     ASN1_OCTET_STRING os, *osp;
 388     M_ASN1_D2I_vars(a, SSL_SESSION *, SSL_SESSION_new);
 389
 390     aip = &ai;
 391     osp = &os;
 392
 393     M_ASN1_D2I_Init();
 394     M_ASN1_D2I_start_sequence();
 395
 396     ai.data = NULL;
 397     ai.length = 0;
 398     M_ASN1_D2I_get_x(ASN1_INTEGER, aip, d2i_ASN1_INTEGER);
 399     if (ai.data != NULL) {
 400         OPENSSL_free(ai.data);
 401         ai.data = NULL;
 402         ai.length = 0;
 403     }
 404
 405     /* we don't care about the version right now :-) */
 406     M_ASN1_D2I_get_x(ASN1_INTEGER, aip, d2i_ASN1_INTEGER);
 407     ssl_version = (int)ASN1_INTEGER_get(aip);
 408     ret->ssl_version = ssl_version;
 409     if (ai.data != NULL) {
 410         OPENSSL_free(ai.data);
 411         ai.data = NULL;
 412         ai.length = 0;
 413     }
 414
 415     os.data = NULL;
 416     os.length = 0;
 417     M_ASN1_D2I_get_x(ASN1_OCTET_STRING, osp, d2i_ASN1_OCTET_STRING);
 418     if (ssl_version == SSL2_VERSION) {
 419         if (os.length != 3) {
 420             c.error = SSL_R_CIPHER_CODE_WRONG_LENGTH;
 421             c.line = __LINE__;
 422             goto err;
 423         }
 424         id = 0x02000000L |
 425             ((unsigned long)os.data[0] << 16L) |
 426             ((unsigned long)os.data[1] << 8L) | (unsigned long)os.data[2];
 427     } else if ((ssl_version >> 8) == SSL3_VERSION_MAJOR
 428         || (ssl_version >> 8) == DTLS1_VERSION_MAJOR
 429         || ssl_version == DTLS1_BAD_VER) {
 430         if (os.length != 2) {
 431             c.error = SSL_R_CIPHER_CODE_WRONG_LENGTH;
 432             c.line = __LINE__;
 433             goto err;
 434         }
 435         id = 0x03000000L |
 436             ((unsigned long)os.data[0] << 8L) | (unsigned long)os.data[1];
 437     } else {
 438         c.error = SSL_R_UNKNOWN_SSL_VERSION;
 439         c.line = __LINE__;
 440         goto err;
 441     }
 442
 443     ret->cipher = NULL;
 444     ret->cipher_id = id;
 445
 446     M_ASN1_D2I_get_x(ASN1_OCTET_STRING, osp, d2i_ASN1_OCTET_STRING);
 447     if ((ssl_version >> 8) >= SSL3_VERSION_MAJOR)
 448         i = SSL3_MAX_SSL_SESSION_ID_LENGTH;
 449     else                        /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
 450         i = SSL2_MAX_SSL_SESSION_ID_LENGTH;
 451
 452     if (os.length > i)
 453         os.length = i;
 454     if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
 455         os.length = sizeof(ret->session_id);
 456
 457     ret->session_id_length = os.length;
 458     OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
 459     memcpy(ret->session_id, os.data, os.length);
 460
 461     M_ASN1_D2I_get_x(ASN1_OCTET_STRING, osp, d2i_ASN1_OCTET_STRING);
 462     if (os.length > SSL_MAX_MASTER_KEY_LENGTH)
 463         ret->master_key_length = SSL_MAX_MASTER_KEY_LENGTH;
 464     else
 465         ret->master_key_length = os.length;
 466     memcpy(ret->master_key, os.data, ret->master_key_length);
 467
 468     os.length = 0;
 469
 470 #ifndef OPENSSL_NO_KRB5
 471     os.length = 0;
 472     M_ASN1_D2I_get_opt(osp, d2i_ASN1_OCTET_STRING, V_ASN1_OCTET_STRING);
 473     if (os.data) {
 474         if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
 475             ret->krb5_client_princ_len = 0;
 476         else
 477             ret->krb5_client_princ_len = os.length;
 478         memcpy(ret->krb5_client_princ, os.data, ret->krb5_client_princ_len);
 479         OPENSSL_free(os.data);
 480         os.data = NULL;
 481         os.length = 0;
 482     } else
 483         ret->krb5_client_princ_len = 0;
 484 #endif                          /* OPENSSL_NO_KRB5 */
 485
 486     M_ASN1_D2I_get_IMP_opt(osp, d2i_ASN1_OCTET_STRING, 0,
 487                            V_ASN1_OCTET_STRING);
 488     if (os.length > SSL_MAX_KEY_ARG_LENGTH)
 489         ret->key_arg_length = SSL_MAX_KEY_ARG_LENGTH;
 490     else
 491         ret->key_arg_length = os.length;
 492     memcpy(ret->key_arg, os.data, ret->key_arg_length);
 493     if (os.data != NULL)
 494         OPENSSL_free(os.data);
 495
 496     ai.length = 0;
 497     M_ASN1_D2I_get_EXP_opt(aip, d2i_ASN1_INTEGER, 1);
 498     if (ai.data != NULL) {
 499         ret->time = ASN1_INTEGER_get(aip);
 500         OPENSSL_free(ai.data);
 501         ai.data = NULL;
 502         ai.length = 0;
 503     } else
 504         ret->time = (unsigned long)time(NULL);
 505
 506     ai.length = 0;
 507     M_ASN1_D2I_get_EXP_opt(aip, d2i_ASN1_INTEGER, 2);
 508     if (ai.data != NULL) {
 509         ret->timeout = ASN1_INTEGER_get(aip);
 510         OPENSSL_free(ai.data);
 511         ai.data = NULL;
 512         ai.length = 0;
 513     } else
 514         ret->timeout = 3;
 515
 516     if (ret->peer != NULL) {
 517         X509_free(ret->peer);
 518         ret->peer = NULL;
 519     }
 520     M_ASN1_D2I_get_EXP_opt(ret->peer, d2i_X509, 3);
 521
 522     os.length = 0;
 523     os.data = NULL;
 524     M_ASN1_D2I_get_EXP_opt(osp, d2i_ASN1_OCTET_STRING, 4);
 525
 526     if (os.data != NULL) {
 527         if (os.length > SSL_MAX_SID_CTX_LENGTH) {
 528             c.error = SSL_R_BAD_LENGTH;
 529             c.line = __LINE__;
 530             OPENSSL_free(os.data);
 531             os.data = NULL;
 532             os.length = 0;
 533             goto err;
 534         } else {
 535             ret->sid_ctx_length = os.length;
 536             memcpy(ret->sid_ctx, os.data, os.length);
 537         }
 538         OPENSSL_free(os.data);
 539         os.data = NULL;
 540         os.length = 0;
 541     } else
 542         ret->sid_ctx_length = 0;
 543
 544     ai.length = 0;
 545     M_ASN1_D2I_get_EXP_opt(aip, d2i_ASN1_INTEGER, 5);
 546     if (ai.data != NULL) {
 547         ret->verify_result = ASN1_INTEGER_get(aip);
 548         OPENSSL_free(ai.data);
 549         ai.data = NULL;
 550         ai.length = 0;
 551     } else
 552         ret->verify_result = X509_V_OK;
 553
 554 #ifndef OPENSSL_NO_TLSEXT
 555     os.length = 0;
 556     os.data = NULL;
 557     M_ASN1_D2I_get_EXP_opt(osp, d2i_ASN1_OCTET_STRING, 6);
 558     if (os.data) {
 559         ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
 560         OPENSSL_free(os.data);
 561         os.data = NULL;
 562         os.length = 0;
 563     } else
 564         ret->tlsext_hostname = NULL;
 565 #endif                          /* OPENSSL_NO_TLSEXT */
 566
 567 #ifndef OPENSSL_NO_PSK
 568     os.length = 0;
 569     os.data = NULL;
 570     M_ASN1_D2I_get_EXP_opt(osp, d2i_ASN1_OCTET_STRING, 7);
 571     if (os.data) {
 572         ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length);
 573         OPENSSL_free(os.data);
 574         os.data = NULL;
 575         os.length = 0;
 576     } else
 577         ret->psk_identity_hint = NULL;
 578
 579     os.length = 0;
 580     os.data = NULL;
 581     M_ASN1_D2I_get_EXP_opt(osp, d2i_ASN1_OCTET_STRING, 8);
 582     if (os.data) {
 583         ret->psk_identity = BUF_strndup((char *)os.data, os.length);
 584         OPENSSL_free(os.data);
 585         os.data = NULL;
 586         os.length = 0;
 587     } else
 588         ret->psk_identity = NULL;
 589 #endif                          /* OPENSSL_NO_PSK */
 590
 591 #ifndef OPENSSL_NO_TLSEXT
 592     ai.length = 0;
 593     M_ASN1_D2I_get_EXP_opt(aip, d2i_ASN1_INTEGER, 9);
 594     if (ai.data != NULL) {
 595         ret->tlsext_tick_lifetime_hint = ASN1_INTEGER_get(aip);
 596         OPENSSL_free(ai.data);
 597         ai.data = NULL;
 598         ai.length = 0;
 599     } else if (ret->tlsext_ticklen && ret->session_id_length)
 600         ret->tlsext_tick_lifetime_hint = -1;
 601     else
 602         ret->tlsext_tick_lifetime_hint = 0;
 603     os.length = 0;
 604     os.data = NULL;
 605     M_ASN1_D2I_get_EXP_opt(osp, d2i_ASN1_OCTET_STRING, 10);
 606     if (os.data) {
 607         ret->tlsext_tick = os.data;
 608         ret->tlsext_ticklen = os.length;
 609         os.data = NULL;
 610         os.length = 0;
 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         ret->compress_meth = os.data[0];
 620         OPENSSL_free(os.data);
 621         os.data = NULL;
 622     }
 623 #endif
 624
 625 #ifndef OPENSSL_NO_SRP
 626     os.length = 0;
 627     os.data = NULL;
 628     M_ASN1_D2I_get_EXP_opt(osp, d2i_ASN1_OCTET_STRING, 12);
 629     if (os.data) {
 630         ret->srp_username = BUF_strndup((char *)os.data, os.length);
 631         OPENSSL_free(os.data);
 632         os.data = NULL;
 633         os.length = 0;
 634     } else
 635         ret->srp_username = NULL;
 636 #endif                          /* OPENSSL_NO_SRP */
 637
 638     M_ASN1_D2I_Finish(a, SSL_SESSION_free, SSL_F_D2I_SSL_SESSION);
 639 }