Note SRP support.
[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 <openssl/crypto.h>
88 #include "ssl_locl.h"
89 #include <openssl/asn1_mac.h>
90 #include <openssl/objects.h>
91 #include <openssl/x509.h>
92
93 typedef struct ssl_session_asn1_st
94         {
95         ASN1_INTEGER version;
96         ASN1_INTEGER ssl_version;
97         ASN1_OCTET_STRING cipher;
98         ASN1_OCTET_STRING comp_id;
99         ASN1_OCTET_STRING master_key;
100         ASN1_OCTET_STRING session_id;
101         ASN1_OCTET_STRING session_id_context;
102         ASN1_OCTET_STRING key_arg;
103 #ifndef OPENSSL_NO_KRB5
104         ASN1_OCTET_STRING krb5_princ;
105 #endif /* OPENSSL_NO_KRB5 */
106         ASN1_INTEGER time;
107         ASN1_INTEGER timeout;
108         ASN1_INTEGER verify_result;
109 #ifndef OPENSSL_NO_TLSEXT
110         ASN1_OCTET_STRING tlsext_hostname;
111         ASN1_INTEGER tlsext_tick_lifetime;
112         ASN1_OCTET_STRING tlsext_tick;
113 #endif /* OPENSSL_NO_TLSEXT */
114 #ifndef OPENSSL_NO_PSK
115         ASN1_OCTET_STRING psk_identity_hint;
116         ASN1_OCTET_STRING psk_identity;
117 #endif /* OPENSSL_NO_PSK */
118 #ifndef OPENSSL_NO_SRP
119         ASN1_OCTET_STRING srp_username;
120 #endif /* OPENSSL_NO_SRP */
121         } SSL_SESSION_ASN1;
122
123 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
124         {
125 #define LSIZE2 (sizeof(long)*2)
126         int v1=0,v2=0,v3=0,v4=0,v5=0,v7=0,v8=0;
127         unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
128         unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
129 #ifndef OPENSSL_NO_TLSEXT
130         int v6=0,v9=0,v10=0;
131         unsigned char ibuf6[LSIZE2];
132 #endif
133 #ifndef OPENSSL_NO_COMP
134         unsigned char cbuf;
135         int v11=0;
136 #endif
137 #ifndef OPENSSL_NO_SRP
138         int v12=0;
139 #endif
140         long l;
141         SSL_SESSION_ASN1 a;
142         M_ASN1_I2D_vars(in);
143
144         if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
145                 return(0);
146
147         /* Note that I cheat in the following 2 assignments.  I know
148          * that if the ASN1_INTEGER passed to ASN1_INTEGER_set
149          * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
150          * This is a bit evil but makes things simple, no dynamic allocation
151          * to clean up :-) */
152         a.version.length=LSIZE2;
153         a.version.type=V_ASN1_INTEGER;
154         a.version.data=ibuf1;
155         ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
156
157         a.ssl_version.length=LSIZE2;
158         a.ssl_version.type=V_ASN1_INTEGER;
159         a.ssl_version.data=ibuf2;
160         ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
161
162         a.cipher.type=V_ASN1_OCTET_STRING;
163         a.cipher.data=buf;
164
165         if (in->cipher == NULL)
166                 l=in->cipher_id;
167         else
168                 l=in->cipher->id;
169         if (in->ssl_version == SSL2_VERSION)
170                 {
171                 a.cipher.length=3;
172                 buf[0]=((unsigned char)(l>>16L))&0xff;
173                 buf[1]=((unsigned char)(l>> 8L))&0xff;
174                 buf[2]=((unsigned char)(l     ))&0xff;
175                 }
176         else
177                 {
178                 a.cipher.length=2;
179                 buf[0]=((unsigned char)(l>>8L))&0xff;
180                 buf[1]=((unsigned char)(l    ))&0xff;
181                 }
182
183 #ifndef OPENSSL_NO_COMP
184         if (in->compress_meth)
185                 {
186                 cbuf = (unsigned char)in->compress_meth;
187                 a.comp_id.length = 1;
188                 a.comp_id.type = V_ASN1_OCTET_STRING;
189                 a.comp_id.data = &cbuf;
190                 }
191 #endif
192
193         a.master_key.length=in->master_key_length;
194         a.master_key.type=V_ASN1_OCTET_STRING;
195         a.master_key.data=in->master_key;
196
197         a.session_id.length=in->session_id_length;
198         a.session_id.type=V_ASN1_OCTET_STRING;
199         a.session_id.data=in->session_id;
200
201         a.session_id_context.length=in->sid_ctx_length;
202         a.session_id_context.type=V_ASN1_OCTET_STRING;
203         a.session_id_context.data=in->sid_ctx;
204
205         a.key_arg.length=in->key_arg_length;
206         a.key_arg.type=V_ASN1_OCTET_STRING;
207         a.key_arg.data=in->key_arg;
208
209 #ifndef OPENSSL_NO_KRB5
210         if (in->krb5_client_princ_len)
211                 {
212                 a.krb5_princ.length=in->krb5_client_princ_len;
213                 a.krb5_princ.type=V_ASN1_OCTET_STRING;
214                 a.krb5_princ.data=in->krb5_client_princ;
215                 }
216 #endif /* OPENSSL_NO_KRB5 */
217
218         if (in->time != 0L)
219                 {
220                 a.time.length=LSIZE2;
221                 a.time.type=V_ASN1_INTEGER;
222                 a.time.data=ibuf3;
223                 ASN1_INTEGER_set(&(a.time),in->time);
224                 }
225
226         if (in->timeout != 0L)
227                 {
228                 a.timeout.length=LSIZE2;
229                 a.timeout.type=V_ASN1_INTEGER;
230                 a.timeout.data=ibuf4;
231                 ASN1_INTEGER_set(&(a.timeout),in->timeout);
232                 }
233
234         if (in->verify_result != X509_V_OK)
235                 {
236                 a.verify_result.length=LSIZE2;
237                 a.verify_result.type=V_ASN1_INTEGER;
238                 a.verify_result.data=ibuf5;
239                 ASN1_INTEGER_set(&a.verify_result,in->verify_result);
240                 }
241
242 #ifndef OPENSSL_NO_TLSEXT
243         if (in->tlsext_hostname)
244                 {
245                 a.tlsext_hostname.length=strlen(in->tlsext_hostname);
246                 a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
247                 a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
248                 }
249         if (in->tlsext_tick)
250                 {
251                 a.tlsext_tick.length= in->tlsext_ticklen;
252                 a.tlsext_tick.type=V_ASN1_OCTET_STRING;
253                 a.tlsext_tick.data=(unsigned char *)in->tlsext_tick;
254                 }
255         if (in->tlsext_tick_lifetime_hint > 0)
256                 {
257                 a.tlsext_tick_lifetime.length=LSIZE2;
258                 a.tlsext_tick_lifetime.type=V_ASN1_INTEGER;
259                 a.tlsext_tick_lifetime.data=ibuf6;
260                 ASN1_INTEGER_set(&a.tlsext_tick_lifetime,in->tlsext_tick_lifetime_hint);
261                 }
262 #endif /* OPENSSL_NO_TLSEXT */
263 #ifndef OPENSSL_NO_PSK
264         if (in->psk_identity_hint)
265                 {
266                 a.psk_identity_hint.length=strlen(in->psk_identity_hint);
267                 a.psk_identity_hint.type=V_ASN1_OCTET_STRING;
268                 a.psk_identity_hint.data=(unsigned char *)(in->psk_identity_hint);
269                 }
270         if (in->psk_identity)
271                 {
272                 a.psk_identity.length=strlen(in->psk_identity);
273                 a.psk_identity.type=V_ASN1_OCTET_STRING;
274                 a.psk_identity.data=(unsigned char *)(in->psk_identity);
275                 }
276 #endif /* OPENSSL_NO_PSK */
277 #ifndef OPENSSL_NO_SRP
278         if (in->srp_username)
279                 {
280                 a.srp_username.length=strlen(in->srp_username);
281                 a.srp_username.type=V_ASN1_OCTET_STRING;
282                 a.srp_username.data=(unsigned char *)(in->srp_username);
283                 }
284 #endif /* OPENSSL_NO_SRP */
285
286         M_ASN1_I2D_len(&(a.version),            i2d_ASN1_INTEGER);
287         M_ASN1_I2D_len(&(a.ssl_version),        i2d_ASN1_INTEGER);
288         M_ASN1_I2D_len(&(a.cipher),             i2d_ASN1_OCTET_STRING);
289         M_ASN1_I2D_len(&(a.session_id),         i2d_ASN1_OCTET_STRING);
290         M_ASN1_I2D_len(&(a.master_key),         i2d_ASN1_OCTET_STRING);
291 #ifndef OPENSSL_NO_KRB5
292         if (in->krb5_client_princ_len)
293                 M_ASN1_I2D_len(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
294 #endif /* OPENSSL_NO_KRB5 */
295         if (in->key_arg_length > 0)
296                 M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
297         if (in->time != 0L)
298                 M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
299         if (in->timeout != 0L)
300                 M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
301         if (in->peer != NULL)
302                 M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
303         M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
304         if (in->verify_result != X509_V_OK)
305                 M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
306
307 #ifndef OPENSSL_NO_TLSEXT
308         if (in->tlsext_tick_lifetime_hint > 0)
309                 M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
310         if (in->tlsext_tick)
311                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
312         if (in->tlsext_hostname)
313                 M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
314 #ifndef OPENSSL_NO_COMP
315         if (in->compress_meth)
316                 M_ASN1_I2D_len_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
317 #endif
318 #endif /* OPENSSL_NO_TLSEXT */
319 #ifndef OPENSSL_NO_PSK
320         if (in->psk_identity_hint)
321                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
322         if (in->psk_identity)
323                 M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
324 #endif /* OPENSSL_NO_PSK */
325 #ifndef OPENSSL_NO_SRP
326         if (in->srp_username)
327                 M_ASN1_I2D_len_EXP_opt(&(a.srp_username), i2d_ASN1_OCTET_STRING,12,v12);
328 #endif /* OPENSSL_NO_SRP */
329
330         M_ASN1_I2D_seq_total();
331
332         M_ASN1_I2D_put(&(a.version),            i2d_ASN1_INTEGER);
333         M_ASN1_I2D_put(&(a.ssl_version),        i2d_ASN1_INTEGER);
334         M_ASN1_I2D_put(&(a.cipher),             i2d_ASN1_OCTET_STRING);
335         M_ASN1_I2D_put(&(a.session_id),         i2d_ASN1_OCTET_STRING);
336         M_ASN1_I2D_put(&(a.master_key),         i2d_ASN1_OCTET_STRING);
337 #ifndef OPENSSL_NO_KRB5
338         if (in->krb5_client_princ_len)
339                 M_ASN1_I2D_put(&(a.krb5_princ), i2d_ASN1_OCTET_STRING);
340 #endif /* OPENSSL_NO_KRB5 */
341         if (in->key_arg_length > 0)
342                 M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
343         if (in->time != 0L)
344                 M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
345         if (in->timeout != 0L)
346                 M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
347         if (in->peer != NULL)
348                 M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
349         M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
350                                v4);
351         if (in->verify_result != X509_V_OK)
352                 M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
353 #ifndef OPENSSL_NO_TLSEXT
354         if (in->tlsext_hostname)
355                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
356 #endif /* OPENSSL_NO_TLSEXT */
357 #ifndef OPENSSL_NO_PSK
358         if (in->psk_identity_hint)
359                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
360         if (in->psk_identity)
361                 M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
362 #endif /* OPENSSL_NO_PSK */
363 #ifndef OPENSSL_NO_TLSEXT
364         if (in->tlsext_tick_lifetime_hint > 0)
365                 M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
366         if (in->tlsext_tick)
367                 M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
368 #endif /* OPENSSL_NO_TLSEXT */
369 #ifndef OPENSSL_NO_COMP
370         if (in->compress_meth)
371                 M_ASN1_I2D_put_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
372 #endif
373 #ifndef OPENSSL_NO_SRP
374         if (in->srp_username)
375                 M_ASN1_I2D_put_EXP_opt(&(a.srp_username), i2d_ASN1_OCTET_STRING,12,v12);
376 #endif /* OPENSSL_NO_SRP */
377         M_ASN1_I2D_finish();
378         }
379
380 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
381                              long length)
382         {
383         int ssl_version=0,i;
384         long id;
385         ASN1_INTEGER ai,*aip;
386         ASN1_OCTET_STRING os,*osp;
387         M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
388
389         aip= &ai;
390         osp= &os;
391
392         M_ASN1_D2I_Init();
393         M_ASN1_D2I_start_sequence();
394
395         ai.data=NULL; ai.length=0;
396         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
397         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
398
399         /* we don't care about the version right now :-) */
400         M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
401         ssl_version=(int)ASN1_INTEGER_get(aip);
402         ret->ssl_version=ssl_version;
403         if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
404
405         os.data=NULL; os.length=0;
406         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
407         if (ssl_version == SSL2_VERSION)
408                 {
409                 if (os.length != 3)
410                         {
411                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
412                         goto err;
413                         }
414                 id=0x02000000L|
415                         ((unsigned long)os.data[0]<<16L)|
416                         ((unsigned long)os.data[1]<< 8L)|
417                          (unsigned long)os.data[2];
418                 }
419         else if ((ssl_version>>8) >= SSL3_VERSION_MAJOR)
420                 {
421                 if (os.length != 2)
422                         {
423                         c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
424                         goto err;
425                         }
426                 id=0x03000000L|
427                         ((unsigned long)os.data[0]<<8L)|
428                          (unsigned long)os.data[1];
429                 }
430         else
431                 {
432                 c.error=SSL_R_UNKNOWN_SSL_VERSION;
433                 goto err;
434                 }
435         
436         ret->cipher=NULL;
437         ret->cipher_id=id;
438
439         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
440         if ((ssl_version>>8) >= SSL3_VERSION_MAJOR)
441                 i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
442         else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
443                 i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
444
445         if (os.length > i)
446                 os.length = i;
447         if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
448                 os.length = sizeof(ret->session_id);
449
450         ret->session_id_length=os.length;
451         OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
452         memcpy(ret->session_id,os.data,os.length);
453
454         M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
455         if (os.length > SSL_MAX_MASTER_KEY_LENGTH)
456                 ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
457         else
458                 ret->master_key_length=os.length;
459         memcpy(ret->master_key,os.data,ret->master_key_length);
460
461         os.length=0;
462
463 #ifndef OPENSSL_NO_KRB5
464         os.length=0;
465         M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
466         if (os.data)
467                 {
468                 if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
469                         ret->krb5_client_princ_len=0;
470                 else
471                         ret->krb5_client_princ_len=os.length;
472                 memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
473                 OPENSSL_free(os.data);
474                 os.data = NULL;
475                 os.length = 0;
476                 }
477         else
478                 ret->krb5_client_princ_len=0;
479 #endif /* OPENSSL_NO_KRB5 */
480
481         M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
482         if (os.length > SSL_MAX_KEY_ARG_LENGTH)
483                 ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
484         else
485                 ret->key_arg_length=os.length;
486         memcpy(ret->key_arg,os.data,ret->key_arg_length);
487         if (os.data != NULL) OPENSSL_free(os.data);
488
489         ai.length=0;
490         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
491         if (ai.data != NULL)
492                 {
493                 ret->time=ASN1_INTEGER_get(aip);
494                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
495                 }
496         else
497                 ret->time=(unsigned long)time(NULL);
498
499         ai.length=0;
500         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
501         if (ai.data != NULL)
502                 {
503                 ret->timeout=ASN1_INTEGER_get(aip);
504                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
505                 }
506         else
507                 ret->timeout=3;
508
509         if (ret->peer != NULL)
510                 {
511                 X509_free(ret->peer);
512                 ret->peer=NULL;
513                 }
514         M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
515
516         os.length=0;
517         os.data=NULL;
518         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
519
520         if(os.data != NULL)
521             {
522             if (os.length > SSL_MAX_SID_CTX_LENGTH)
523                 {
524                 c.error=SSL_R_BAD_LENGTH;
525                 goto err;
526                 }
527             else
528                 {
529                 ret->sid_ctx_length=os.length;
530                 memcpy(ret->sid_ctx,os.data,os.length);
531                 }
532             OPENSSL_free(os.data); os.data=NULL; os.length=0;
533             }
534         else
535             ret->sid_ctx_length=0;
536
537         ai.length=0;
538         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
539         if (ai.data != NULL)
540                 {
541                 ret->verify_result=ASN1_INTEGER_get(aip);
542                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
543                 }
544         else
545                 ret->verify_result=X509_V_OK;
546
547 #ifndef OPENSSL_NO_TLSEXT
548         os.length=0;
549         os.data=NULL;
550         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
551         if (os.data)
552                 {
553                 ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
554                 OPENSSL_free(os.data);
555                 os.data = NULL;
556                 os.length = 0;
557                 }
558         else
559                 ret->tlsext_hostname=NULL;
560 #endif /* OPENSSL_NO_TLSEXT */
561
562 #ifndef OPENSSL_NO_PSK
563         os.length=0;
564         os.data=NULL;
565         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7);
566         if (os.data)
567                 {
568                 ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length);
569                 OPENSSL_free(os.data);
570                 os.data = NULL;
571                 os.length = 0;
572                 }
573         else
574                 ret->psk_identity_hint=NULL;
575 #endif /* OPENSSL_NO_PSK */
576
577 #ifndef OPENSSL_NO_TLSEXT
578         ai.length=0;
579         M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,9);
580         if (ai.data != NULL)
581                 {
582                 ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip);
583                 OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
584                 }
585         else if (ret->tlsext_ticklen && ret->session_id_length)
586                 ret->tlsext_tick_lifetime_hint = -1;
587         else
588                 ret->tlsext_tick_lifetime_hint=0;
589         os.length=0;
590         os.data=NULL;
591         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
592         if (os.data)
593                 {
594                 ret->tlsext_tick = os.data;
595                 ret->tlsext_ticklen = os.length;
596                 os.data = NULL;
597                 os.length = 0;
598                 }
599         else
600                 ret->tlsext_tick=NULL;
601 #endif /* OPENSSL_NO_TLSEXT */
602 #ifndef OPENSSL_NO_COMP
603         os.length=0;
604         os.data=NULL;
605         M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,11);
606         if (os.data)
607                 {
608                 ret->compress_meth = os.data[0];
609                 OPENSSL_free(os.data);
610                 os.data = NULL;
611                 }
612 #endif
613
614 #ifndef OPENSSL_NO_SRP
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->srp_username = BUF_strndup((char *)os.data, os.length);
621                 OPENSSL_free(os.data);
622                 os.data = NULL;
623                 os.length = 0;
624                 }
625         else
626                 ret->srp_username=NULL;
627 #endif /* OPENSSL_NO_SRP */
628
629         M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
630         }