Additional "chain_cert" functions.
[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 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         }