3c2e9fae7e5b3dc3c857a438cb66646fe2fec341
[openssl.git] / 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 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 #ifndef OPENSSL_NO_EC
110         ASN1_OCTET_STRING tlsext_ecpointformatlist;
111 #endif /* OPENSSL_NO_EC */
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,v6=0,v7=0,v8=0,v9=0;
123         unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
124         unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
125         long l;
126         SSL_SESSION_ASN1 a;
127         M_ASN1_I2D_vars(in);
128
129         if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
130                 return(0);
131
132         /* Note that I cheat in the following 2 assignments.  I know
133          * that if the ASN1_INTEGER passed to ASN1_INTEGER_set
134          * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
135          * This is a bit evil but makes things simple, no dynamic allocation
136          * to clean up :-) */
137         a.version.length=LSIZE2;
138         a.version.type=V_ASN1_INTEGER;
139         a.version.data=ibuf1;
140         ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
141
142         a.ssl_version.length=LSIZE2;
143         a.ssl_version.type=V_ASN1_INTEGER;
144         a.ssl_version.data=ibuf2;
145         ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
146
147         a.cipher.type=V_ASN1_OCTET_STRING;
148         a.cipher.data=buf;
149
150         if (in->cipher == NULL)
151                 l=in->cipher_id;
152         else
153                 l=in->cipher->id;
154         if (in->ssl_version == SSL2_VERSION)
155                 {
156                 a.cipher.length=3;
157                 buf[0]=((unsigned char)(l>>16L))&0xff;
158                 buf[1]=((unsigned char)(l>> 8L))&0xff;
159                 buf[2]=((unsigned char)(l     ))&0xff;
160                 }
161         else
162                 {
163                 a.cipher.length=2;
164                 buf[0]=((unsigned char)(l>>8L))&0xff;
165                 buf[1]=((unsigned char)(l    ))&0xff;
166                 }
167
168         a.master_key.length=in->master_key_length;
169         a.master_key.type=V_ASN1_OCTET_STRING;
170         a.master_key.data=in->master_key;
171
172         a.session_id.length=in->session_id_length;
173         a.session_id.type=V_ASN1_OCTET_STRING;
174         a.session_id.data=in->session_id;
175
176         a.session_id_context.length=in->sid_ctx_length;
177         a.session_id_context.type=V_ASN1_OCTET_STRING;
178         a.session_id_context.data=in->sid_ctx;
179
180         a.key_arg.length=in->key_arg_length;
181         a.key_arg.type=V_ASN1_OCTET_STRING;
182         a.key_arg.data=in->key_arg;
183
184 #ifndef OPENSSL_NO_KRB5
185         if (in->krb5_client_princ_len)
186                 {
187                 a.krb5_princ.length=in->krb5_client_princ_len;
188                 a.krb5_princ.type=V_ASN1_OCTET_STRING;
189                 a.krb5_princ.data=in->krb5_client_princ;
190                 }
191 #endif /* OPENSSL_NO_KRB5 */
192
193         if (in->time != 0L)
194                 {
195                 a.time.length=LSIZE2;
196                 a.time.type=V_ASN1_INTEGER;
197                 a.time.data=ibuf3;
198                 ASN1_INTEGER_set(&(a.time),in->time);
199                 }
200
201         if (in->timeout != 0L)
202                 {
203                 a.timeout.length=LSIZE2;
204                 a.timeout.type=V_ASN1_INTEGER;
205                 a.timeout.data=ibuf4;
206                 ASN1_INTEGER_set(&(a.timeout),in->timeout);
207                 }
208
209         if (in->verify_result != X509_V_OK)
210                 {
211                 a.verify_result.length=LSIZE2;
212                 a.verify_result.type=V_ASN1_INTEGER;
213                 a.verify_result.data=ibuf5;
214                 ASN1_INTEGER_set(&a.verify_result,in->verify_result);
215                 }
216
217 #ifndef OPENSSL_NO_TLSEXT
218         if (in->tlsext_hostname)
219                 {
220                 a.tlsext_hostname.length=strlen(in->tlsext_hostname);
221                 a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
222                 a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
223                 }                
224 #ifndef OPENSSL_NO_EC
225         if (in->tlsext_ecpointformatlist)
226                 {
227                 a.tlsext_ecpointformatlist.length=1+in->tlsext_ecpointformatlist_length;
228                 a.tlsext_ecpointformatlist.type=V_ASN1_OCTET_STRING;
229                 if ((a.tlsext_ecpointformatlist.data = OPENSSL_malloc(1+in->tlsext_ecpointformatlist_length)) == NULL)
230                         {
231                         SSLerr(SSL_F_I2D_SSL_SESSION,ERR_R_MALLOC_FAILURE);
232                         return(0);
233                         }
234                 *a.tlsext_ecpointformatlist.data = (unsigned char) in->tlsext_ecpointformatlist_length;
235                 memcpy(a.tlsext_ecpointformatlist.data+1, in->tlsext_ecpointformatlist, in->tlsext_ecpointformatlist_length);
236                 }
237 #endif /* OPENSSL_NO_EC */
238 #endif /* OPENSSL_NO_TLSEXT */
239 #ifndef OPENSSL_NO_PSK
240         if (in->psk_identity_hint)
241                 {
242                 a.psk_identity_hint.length=strlen(in->psk_identity_hint);
243                 a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
244                 a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
245                 }
246         if (in->psk_identity)
247                 {
248                 a.psk_identity.length=strlen(in->psk_identity);
249                 a.psk_identity.type=V_ASN1_OCTET_STRING;
250                 a.psk_identity.data=(unsigned char *)(in->psk_identity);
251                 }
252 #endif /* OPENSSL_NO_PSK */
253
254         M_ASN1_I2D_len(&(a.version),            i2d_ASN1_INTEGER);
255         M_ASN1_I2D_len(&(a.ssl_version),        i2d_ASN1_INTEGER);
256         M_ASN1_I2D_len(&(a.cipher),             i2d_ASN1_OCTET_STRING);
257         M_ASN1_I2D_len(&(a.session_id),         i2d_ASN1_OCTET_STRING);
258         M_ASN1_I2D_len(&(a.master_key),         i2d_ASN1_OCTET_STRING);
259 #ifndef OPENSSL_NO_KRB5
260         if (in->krb5_client_princ_len)
261                 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
262 #endif /* OPENSSL_NO_KRB5 */
263         if (in->key_arg_length > 0)
264                 M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
265         if (in->time != 0L)
266                 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
267         if (in->timeout != 0L)
268                 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
269         if (in->peer != NULL)
270                 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
271         M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
272         if (in->verify_result != X509_V_OK)
273                 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
274
275 #ifndef OPENSSL_NO_TLSEXT
276         if (in->tlsext_hostname)
277                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
278 #ifndef OPENSSL_NO_EC
279         if (in->tlsext_ecpointformatlist)
280                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_ecpointformatlist), i2d_ASN1_OCTET_STRING,7,v7);
281 #endif /* OPENSSL_NO_EC */
282 #endif /* OPENSSL_NO_TLSEXT */
283 #ifndef OPENSSL_NO_PSK
284         if (in->psk_identity_hint)
285                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,8,v8);
286         if (in->psk_identity)
287                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,9,v9);
288 #endif /* OPENSSL_NO_PSK */
289
290         M_ASN1_I2D_seq_total();
291
292         M_ASN1_I2D_put(&(a.version),            i2d_ASN1_INTEGER);
293         M_ASN1_I2D_put(&(a.ssl_version),        i2d_ASN1_INTEGER);
294         M_ASN1_I2D_put(&(a.cipher),             i2d_ASN1_OCTET_STRING);
295         M_ASN1_I2D_put(&(a.session_id),         i2d_ASN1_OCTET_STRING);
296         M_ASN1_I2D_put(&(a.master_key),         i2d_ASN1_OCTET_STRING);
297 #ifndef OPENSSL_NO_KRB5
298         if (in->krb5_client_princ_len)
299                 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
300 #endif /* OPENSSL_NO_KRB5 */
301         if (in->key_arg_length > 0)
302                 M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
303         if (in->time != 0L)
304                 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
305         if (in->timeout != 0L)
306                 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
307         if (in->peer != NULL)
308                 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
309         M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
310                                v4);
311         if (in->verify_result != X509_V_OK)
312                 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
313 #ifndef OPENSSL_NO_TLSEXT
314         if (in->tlsext_hostname)
315                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
316 #ifndef OPENSSL_NO_EC
317         if (in->tlsext_ecpointformatlist)
318                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_ecpointformatlist), i2d_ASN1_OCTET_STRING,7,v7);
319 #endif /* OPENSSL_NO_EC */
320 #endif /* OPENSSL_NO_TLSEXT */
321 #ifndef OPENSSL_NO_PSK
322         if (in->psk_identity_hint)
323                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,8,v8);
324         if (in->psk_identity)
325                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,9,v9);
326 #endif /* OPENSSL_NO_PSK */
327         M_ASN1_I2D_finish();
328 #ifndef OPENSSL_NO_TLSEXT
329 #ifndef OPENSSL_NO_EC
330         OPENSSL_free(a.tlsext_ecpointformatlist.data);
331 #endif /* OPENSSL_NO_EC */
332 #endif /* OPENSSL_NO_TLSEXT */
333         }
334
335 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
336              long length)
337         {
338         int version,ssl_version=0,i;
339         long id;
340         ASN1_INTEGER ai,*aip;
341         ASN1_OCTET_STRING os,*osp;
342         M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
343
344         aip= &ai;
345         osp= &os;
346
347         M_ASN1_D2I_Init();
348         M_ASN1_D2I_start_sequence();
349
350         ai.data=NULL; ai.length=0;
351         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
352         version=(int)ASN1_INTEGER_get(aip);
353         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
354
355         /* we don't care about the version right now :-) */
356         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
357         ssl_version=(int)ASN1_INTEGER_get(aip);
358         ret->ssl_version=ssl_version;
359         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
360
361         os.data=NULL; os.length=0;
362         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
363         if (ssl_version == SSL2_VERSION)
364                 {
365                 if (os.length != 3)
366                         {
367                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
368                         goto err;
369                         }
370                 id=0x02000000L|
371                         ((unsigned long)os.data[0]<<16L)|
372                         ((unsigned long)os.data[1]<< 8L)|
373                          (unsigned long)os.data[2];
374                 }
375         else if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
376                 {
377                 if (os.length != 2)
378                         {
379                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
380                         goto err;
381                         }
382                 id=0x03000000L|
383                         ((unsigned long)os.data[0]<<8L)|
384                          (unsigned long)os.data[1];
385                 }
386         else
387                 {
388                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_UNKNOWN_SSL_VERSION);
389                 return(NULL);
390                 }
391         
392         ret->cipher=NULL;
393         ret->cipher_id=id;
394
395         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
396         if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
397                 i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
398         else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
399                 i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
400
401         if (os.length > i)
402                 os.length = i;
403         if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
404                 os.length = sizeof(ret->session_id);
405
406         ret->session_id_length=os.length;
407         OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
408         memcpy(ret->session_id,os.data,os.length);
409
410         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
411         if (ret->master_key_length > SSL_MAX_MASTER_KEY_LENGTH)
412                 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
413         else
414                 ret->master_key_length=os.length;
415         memcpy(ret->master_key,os.data,ret->master_key_length);
416
417         os.length=0;
418
419 #ifndef OPENSSL_NO_KRB5
420         os.length=0;
421         M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
422         if (os.data)
423                 {
424                 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
425                         ret->krb5_client_princ_len=0;
426                 else
427                         ret->krb5_client_princ_len=os.length;
428                 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
429                 OPENSSL_free(os.data);
430                 os.data = NULL;
431                 os.length = 0;
432                 }
433         else
434                 ret->krb5_client_princ_len=0;
435 #endif /* OPENSSL_NO_KRB5 */
436
437         M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
438         if (os.length > SSL_MAX_KEY_ARG_LENGTH)
439                 ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
440         else
441                 ret->key_arg_length=os.length;
442         memcpy(ret->key_arg,os.data,ret->key_arg_length);
443         if (os.data != NULL) OPENSSL_free(os.data);
444
445         ai.length=0;
446         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
447         if (ai.data != NULL)
448                 {
449                 ret->time=ASN1_INTEGER_get(aip);
450                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
451                 }
452         else
453                 ret->time=(unsigned long)time(NULL);
454
455         ai.length=0;
456         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
457         if (ai.data != NULL)
458                 {
459                 ret->timeout=ASN1_INTEGER_get(aip);
460                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
461                 }
462         else
463                 ret->timeout=3;
464
465         if (ret->peer != NULL)
466                 {
467                 X509_free(ret->peer);
468                 ret->peer=NULL;
469                 }
470         M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
471
472         os.length=0;
473         os.data=NULL;
474         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
475
476         if(os.data != NULL)
477             {
478             if (os.length > SSL_MAX_SID_CTX_LENGTH)
479                 {
480                 ret->sid_ctx_length=os.length;
481                 SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_BAD_LENGTH);
482                 }
483             else
484                 {
485                 ret->sid_ctx_length=os.length;
486                 memcpy(ret->sid_ctx,os.data,os.length);
487                 }
488             OPENSSL_free(os.data); os.data=NULL; os.length=0;
489             }
490         else
491             ret->sid_ctx_length=0;
492
493         ai.length=0;
494         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
495         if (ai.data != NULL)
496                 {
497                 ret->verify_result=ASN1_INTEGER_get(aip);
498                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
499                 }
500         else
501                 ret->verify_result=X509_V_OK;
502
503 #ifndef OPENSSL_NO_TLSEXT
504         os.length=0;
505         os.data=NULL;
506         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
507         if (os.data)
508                 {
509                 ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
510                 OPENSSL_free(os.data);
511                 os.data = NULL;
512                 os.length = 0;
513                 }
514         else
515                 ret->tlsext_hostname=NULL;
516
517 #ifndef OPENSSL_NO_EC
518         os.length=0;
519         os.data=NULL;
520         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7);
521         if (os.data)
522                 {
523                 if ((ret->tlsext_ecpointformatlist = OPENSSL_malloc(os.length - 1)) == NULL)
524                         {
525                         SSLerr(SSL_F_D2I_SSL_SESSION,ERR_R_MALLOC_FAILURE);
526                         }
527                 else
528                         {
529                         ret->tlsext_ecpointformatlist_length = os.length - 1;
530                         memcpy(ret->tlsext_ecpointformatlist, (unsigned char *) os.data + 1, os.length - 1);
531                         }
532                 OPENSSL_free(os.data);
533                 os.data = NULL;
534                 os.length = 0;
535                 }
536         else
537                 {
538                 ret->tlsext_ecpointformatlist=NULL;
539                 ret->tlsext_ecpointformatlist_length=0;
540                 }
541
542 #endif /* OPENSSL_NO_EC */
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,8);
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
559         os.length=0;
560         os.data=NULL;
561         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,9);
562         if (os.data)
563                 {
564                 ret->psk_identity = BUF_strndup((char *)os.data, os.length);
565                 OPENSSL_free(os.data);
566                 os.data = NULL;
567                 os.length = 0;
568                 }
569         else
570                 ret->psk_identity=NULL;
571 #endif /* OPENSSL_NO_KRB5 */
572
573         M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
574         }