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
92typedef 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	ASN1_OCTET_STRING original_handshake_hash;
121	} SSL_SESSION_ASN1;
122
123int 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,v14=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
277	if (in->original_handshake_hash_len > 0)
278		{
279		a.original_handshake_hash.length = in->original_handshake_hash_len;
280		a.original_handshake_hash.type = V_ASN1_OCTET_STRING;
281		a.original_handshake_hash.data = in->original_handshake_hash;
282		}
283#endif /* OPENSSL_NO_PSK */
284#ifndef OPENSSL_NO_SRP
285	if (in->srp_username)
286		{
287		a.srp_username.length=strlen(in->srp_username);
288		a.srp_username.type=V_ASN1_OCTET_STRING;
289		a.srp_username.data=(unsigned char *)(in->srp_username);
290		}
291#endif /* OPENSSL_NO_SRP */
292
293	M_ASN1_I2D_len(&(a.version),		i2d_ASN1_INTEGER);
294	M_ASN1_I2D_len(&(a.ssl_version),	i2d_ASN1_INTEGER);
295	M_ASN1_I2D_len(&(a.cipher),		i2d_ASN1_OCTET_STRING);
296	M_ASN1_I2D_len(&(a.session_id),		i2d_ASN1_OCTET_STRING);
297	M_ASN1_I2D_len(&(a.master_key),		i2d_ASN1_OCTET_STRING);
298#ifndef OPENSSL_NO_KRB5
299	if (in->krb5_client_princ_len)
300        	M_ASN1_I2D_len(&(a.krb5_princ),	i2d_ASN1_OCTET_STRING);
301#endif /* OPENSSL_NO_KRB5 */
302	if (in->key_arg_length > 0)
303		M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
304	if (in->time != 0L)
305		M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
306	if (in->timeout != 0L)
307		M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
308	if (in->peer != NULL)
309		M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
310	M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
311	if (in->verify_result != X509_V_OK)
312		M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
313
314#ifndef OPENSSL_NO_TLSEXT
315	if (in->tlsext_tick_lifetime_hint > 0)
316      	 	M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
317	if (in->tlsext_tick)
318        	M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
319	if (in->tlsext_hostname)
320        	M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
321#ifndef OPENSSL_NO_COMP
322	if (in->compress_meth)
323        	M_ASN1_I2D_len_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
324#endif
325#endif /* OPENSSL_NO_TLSEXT */
326#ifndef OPENSSL_NO_PSK
327	if (in->psk_identity_hint)
328        	M_ASN1_I2D_len_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
329	if (in->psk_identity)
330        	M_ASN1_I2D_len_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
331#endif /* OPENSSL_NO_PSK */
332#ifndef OPENSSL_NO_SRP
333	if (in->srp_username)
334        	M_ASN1_I2D_len_EXP_opt(&(a.srp_username), i2d_ASN1_OCTET_STRING,12,v12);
335#endif /* OPENSSL_NO_SRP */
336	if (in->original_handshake_hash_len > 0)
337		M_ASN1_I2D_len_EXP_opt(&(a.original_handshake_hash),i2d_ASN1_OCTET_STRING,14,v14);
338
339	M_ASN1_I2D_seq_total();
340
341	M_ASN1_I2D_put(&(a.version),		i2d_ASN1_INTEGER);
342	M_ASN1_I2D_put(&(a.ssl_version),	i2d_ASN1_INTEGER);
343	M_ASN1_I2D_put(&(a.cipher),		i2d_ASN1_OCTET_STRING);
344	M_ASN1_I2D_put(&(a.session_id),		i2d_ASN1_OCTET_STRING);
345	M_ASN1_I2D_put(&(a.master_key),		i2d_ASN1_OCTET_STRING);
346#ifndef OPENSSL_NO_KRB5
347	if (in->krb5_client_princ_len)
348        	M_ASN1_I2D_put(&(a.krb5_princ),	i2d_ASN1_OCTET_STRING);
349#endif /* OPENSSL_NO_KRB5 */
350	if (in->key_arg_length > 0)
351		M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
352	if (in->time != 0L)
353		M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
354	if (in->timeout != 0L)
355		M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
356	if (in->peer != NULL)
357		M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
358	M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
359			       v4);
360	if (in->verify_result != X509_V_OK)
361		M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
362#ifndef OPENSSL_NO_TLSEXT
363	if (in->tlsext_hostname)
364        	M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
365#endif /* OPENSSL_NO_TLSEXT */
366#ifndef OPENSSL_NO_PSK
367	if (in->psk_identity_hint)
368		M_ASN1_I2D_put_EXP_opt(&(a.psk_identity_hint), i2d_ASN1_OCTET_STRING,7,v7);
369	if (in->psk_identity)
370		M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
371#endif /* OPENSSL_NO_PSK */
372#ifndef OPENSSL_NO_TLSEXT
373	if (in->tlsext_tick_lifetime_hint > 0)
374      	 	M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
375	if (in->tlsext_tick)
376        	M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
377#endif /* OPENSSL_NO_TLSEXT */
378#ifndef OPENSSL_NO_COMP
379	if (in->compress_meth)
380        	M_ASN1_I2D_put_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
381#endif
382#ifndef OPENSSL_NO_SRP
383	if (in->srp_username)
384		M_ASN1_I2D_put_EXP_opt(&(a.srp_username), i2d_ASN1_OCTET_STRING,12,v12);
385#endif /* OPENSSL_NO_SRP */
386	if (in->original_handshake_hash_len > 0)
387		M_ASN1_I2D_put_EXP_opt(&(a.original_handshake_hash),i2d_ASN1_OCTET_STRING,14,v14);
388	M_ASN1_I2D_finish();
389	}
390
391SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
392			     long length)
393	{
394	int ssl_version=0,i;
395	long id;
396	ASN1_INTEGER ai,*aip;
397	ASN1_OCTET_STRING os,*osp;
398	M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
399
400	aip= &ai;
401	osp= &os;
402
403	M_ASN1_D2I_Init();
404	M_ASN1_D2I_start_sequence();
405
406	ai.data=NULL; ai.length=0;
407	M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
408	if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
409
410	/* we don't care about the version right now :-) */
411	M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
412	ssl_version=(int)ASN1_INTEGER_get(aip);
413	ret->ssl_version=ssl_version;
414	if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
415
416	os.data=NULL; os.length=0;
417	M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
418	if (ssl_version == SSL2_VERSION)
419		{
420		if (os.length != 3)
421			{
422			c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
423			c.line=__LINE__;
424			goto err;
425			}
426		id=0x02000000L|
427			((unsigned long)os.data[0]<<16L)|
428			((unsigned long)os.data[1]<< 8L)|
429			 (unsigned long)os.data[2];
430		}
431	else if ((ssl_version>>8) >= SSL3_VERSION_MAJOR)
432		{
433		if (os.length != 2)
434			{
435			c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
436			c.line=__LINE__;
437			goto err;
438			}
439		id=0x03000000L|
440			((unsigned long)os.data[0]<<8L)|
441			 (unsigned long)os.data[1];
442		}
443	else
444		{
445		c.error=SSL_R_UNKNOWN_SSL_VERSION;
446		c.line=__LINE__;
447		goto err;
448		}
449
450	ret->cipher=NULL;
451	ret->cipher_id=id;
452
453	M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
454	if ((ssl_version>>8) >= SSL3_VERSION_MAJOR)
455		i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
456	else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
457		i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
458
459	if (os.length > i)
460		os.length = i;
461	if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
462		os.length = sizeof(ret->session_id);
463
464	ret->session_id_length=os.length;
465	OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
466	memcpy(ret->session_id,os.data,os.length);
467
468	M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
469	if (os.length > SSL_MAX_MASTER_KEY_LENGTH)
470		ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
471	else
472		ret->master_key_length=os.length;
473	memcpy(ret->master_key,os.data,ret->master_key_length);
474
475	os.length=0;
476
477#ifndef OPENSSL_NO_KRB5
478	os.length=0;
479	M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
480	if (os.data)
481		{
482        	if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
483            		ret->krb5_client_princ_len=0;
484		else
485			ret->krb5_client_princ_len=os.length;
486		memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
487		OPENSSL_free(os.data);
488		os.data = NULL;
489		os.length = 0;
490		}
491	else
492		ret->krb5_client_princ_len=0;
493#endif /* OPENSSL_NO_KRB5 */
494
495	M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
496	if (os.length > SSL_MAX_KEY_ARG_LENGTH)
497		ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
498	else
499		ret->key_arg_length=os.length;
500	memcpy(ret->key_arg,os.data,ret->key_arg_length);
501	if (os.data != NULL) OPENSSL_free(os.data);
502
503	ai.length=0;
504	M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
505	if (ai.data != NULL)
506		{
507		ret->time=ASN1_INTEGER_get(aip);
508		OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
509		}
510	else
511		ret->time=(unsigned long)time(NULL);
512
513	ai.length=0;
514	M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
515	if (ai.data != NULL)
516		{
517		ret->timeout=ASN1_INTEGER_get(aip);
518		OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
519		}
520	else
521		ret->timeout=3;
522
523	if (ret->peer != NULL)
524		{
525		X509_free(ret->peer);
526		ret->peer=NULL;
527		}
528	M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
529
530	os.length=0;
531	os.data=NULL;
532	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
533
534	if(os.data != NULL)
535	    {
536	    if (os.length > SSL_MAX_SID_CTX_LENGTH)
537		{
538		c.error=SSL_R_BAD_LENGTH;
539		c.line=__LINE__;
540		goto err;
541		}
542	    else
543		{
544		ret->sid_ctx_length=os.length;
545		memcpy(ret->sid_ctx,os.data,os.length);
546		}
547	    OPENSSL_free(os.data); os.data=NULL; os.length=0;
548	    }
549	else
550	    ret->sid_ctx_length=0;
551
552	ai.length=0;
553	M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
554	if (ai.data != NULL)
555		{
556		ret->verify_result=ASN1_INTEGER_get(aip);
557		OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
558		}
559	else
560		ret->verify_result=X509_V_OK;
561
562#ifndef OPENSSL_NO_TLSEXT
563	os.length=0;
564	os.data=NULL;
565	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
566	if (os.data)
567		{
568		ret->tlsext_hostname = 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->tlsext_hostname=NULL;
575#endif /* OPENSSL_NO_TLSEXT */
576
577#ifndef OPENSSL_NO_PSK
578	os.length=0;
579	os.data=NULL;
580	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,7);
581	if (os.data)
582		{
583		ret->psk_identity_hint = BUF_strndup((char *)os.data, os.length);
584		OPENSSL_free(os.data);
585		os.data = NULL;
586		os.length = 0;
587		}
588	else
589		ret->psk_identity_hint=NULL;
590
591	os.length=0;
592	os.data=NULL;
593	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,8);
594	if (os.data)
595		{
596		ret->psk_identity = BUF_strndup((char *)os.data, os.length);
597		OPENSSL_free(os.data);
598		os.data = NULL;
599		os.length = 0;
600		}
601	else
602		ret->psk_identity=NULL;
603#endif /* OPENSSL_NO_PSK */
604
605#ifndef OPENSSL_NO_TLSEXT
606	ai.length=0;
607	M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,9);
608	if (ai.data != NULL)
609		{
610		ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip);
611		OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
612		}
613	else if (ret->tlsext_ticklen && ret->session_id_length)
614		ret->tlsext_tick_lifetime_hint = -1;
615	else
616		ret->tlsext_tick_lifetime_hint=0;
617	os.length=0;
618	os.data=NULL;
619	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
620	if (os.data)
621		{
622		ret->tlsext_tick = os.data;
623		ret->tlsext_ticklen = os.length;
624		os.data = NULL;
625		os.length = 0;
626		}
627	else
628		ret->tlsext_tick=NULL;
629#endif /* OPENSSL_NO_TLSEXT */
630#ifndef OPENSSL_NO_COMP
631	os.length=0;
632	os.data=NULL;
633	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,11);
634	if (os.data)
635		{
636		ret->compress_meth = os.data[0];
637		OPENSSL_free(os.data);
638		os.data = NULL;
639		}
640#endif
641
642#ifndef OPENSSL_NO_SRP
643	os.length=0;
644	os.data=NULL;
645	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,12);
646	if (os.data)
647		{
648		ret->srp_username = BUF_strndup((char *)os.data, os.length);
649		OPENSSL_free(os.data);
650		os.data = NULL;
651		os.length = 0;
652		}
653	else
654		ret->srp_username=NULL;
655#endif /* OPENSSL_NO_SRP */
656
657	os.length=0;
658	os.data=NULL;
659	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,14);
660	if (os.data && os.length < (int)sizeof(ret->original_handshake_hash))
661		{
662		memcpy(ret->original_handshake_hash, os.data, os.length);
663		ret->original_handshake_hash_len = os.length;
664		OPENSSL_free(os.data);
665		os.data = NULL;
666		}
667
668	M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
669	}
670