xref: /freebsd/crypto/openssl/ssl/ssl_asn1.c (revision 2e1417489338b971e5fd599ff48b5f65df9e8d3b) 
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 #include <stdio.h>
60 #include <stdlib.h>
61 #include "ssl_locl.h"
62 #include <openssl/asn1_mac.h>
63 #include <openssl/objects.h>
64 #include <openssl/x509.h>
65 
66 typedef struct ssl_session_asn1_st
67 	{
68 	ASN1_INTEGER version;
69 	ASN1_INTEGER ssl_version;
70 	ASN1_OCTET_STRING cipher;
71 	ASN1_OCTET_STRING comp_id;
72 	ASN1_OCTET_STRING master_key;
73 	ASN1_OCTET_STRING session_id;
74 	ASN1_OCTET_STRING session_id_context;
75 	ASN1_OCTET_STRING key_arg;
76 #ifndef OPENSSL_NO_KRB5
77         ASN1_OCTET_STRING krb5_princ;
78 #endif /* OPENSSL_NO_KRB5 */
79 	ASN1_INTEGER time;
80 	ASN1_INTEGER timeout;
81 	ASN1_INTEGER verify_result;
82 #ifndef OPENSSL_NO_TLSEXT
83 	ASN1_OCTET_STRING tlsext_hostname;
84 	ASN1_INTEGER tlsext_tick_lifetime;
85 	ASN1_OCTET_STRING tlsext_tick;
86 #endif /* OPENSSL_NO_TLSEXT */
87 	} SSL_SESSION_ASN1;
88 
89 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
90 	{
91 #define LSIZE2 (sizeof(long)*2)
92 	int v1=0,v2=0,v3=0,v4=0,v5=0;
93 	unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
94 	unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
95 #ifndef OPENSSL_NO_TLSEXT
96 	int v6=0,v9=0,v10=0;
97 	unsigned char ibuf6[LSIZE2];
98 #endif
99 #ifndef OPENSSL_NO_COMP
100 	int v11=0;
101 	unsigned char cbuf;
102 #endif
103 	long l;
104 	SSL_SESSION_ASN1 a;
105 	M_ASN1_I2D_vars(in);
106 
107 	if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
108 		return(0);
109 
110 	/* Note that I cheat in the following 2 assignments.  I know
111 	 * that if the ASN1_INTEGER passed to ASN1_INTEGER_set
112 	 * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
113 	 * This is a bit evil but makes things simple, no dynamic allocation
114 	 * to clean up :-) */
115 	a.version.length=LSIZE2;
116 	a.version.type=V_ASN1_INTEGER;
117 	a.version.data=ibuf1;
118 	ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
119 
120 	a.ssl_version.length=LSIZE2;
121 	a.ssl_version.type=V_ASN1_INTEGER;
122 	a.ssl_version.data=ibuf2;
123 	ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
124 
125 	a.cipher.type=V_ASN1_OCTET_STRING;
126 	a.cipher.data=buf;
127 
128 	if (in->cipher == NULL)
129 		l=in->cipher_id;
130 	else
131 		l=in->cipher->id;
132 	if (in->ssl_version == SSL2_VERSION)
133 		{
134 		a.cipher.length=3;
135 		buf[0]=((unsigned char)(l>>16L))&0xff;
136 		buf[1]=((unsigned char)(l>> 8L))&0xff;
137 		buf[2]=((unsigned char)(l     ))&0xff;
138 		}
139 	else
140 		{
141 		a.cipher.length=2;
142 		buf[0]=((unsigned char)(l>>8L))&0xff;
143 		buf[1]=((unsigned char)(l    ))&0xff;
144 		}
145 
146 #ifndef OPENSSL_NO_COMP
147 	if (in->compress_meth)
148 		{
149 		cbuf = (unsigned char)in->compress_meth;
150 		a.comp_id.length = 1;
151 		a.comp_id.type = V_ASN1_OCTET_STRING;
152 		a.comp_id.data = &cbuf;
153 		}
154 #endif
155 
156 	a.master_key.length=in->master_key_length;
157 	a.master_key.type=V_ASN1_OCTET_STRING;
158 	a.master_key.data=in->master_key;
159 
160 	a.session_id.length=in->session_id_length;
161 	a.session_id.type=V_ASN1_OCTET_STRING;
162 	a.session_id.data=in->session_id;
163 
164 	a.session_id_context.length=in->sid_ctx_length;
165 	a.session_id_context.type=V_ASN1_OCTET_STRING;
166 	a.session_id_context.data=in->sid_ctx;
167 
168 	a.key_arg.length=in->key_arg_length;
169 	a.key_arg.type=V_ASN1_OCTET_STRING;
170 	a.key_arg.data=in->key_arg;
171 
172 #ifndef OPENSSL_NO_KRB5
173 	if (in->krb5_client_princ_len)
174 		{
175 		a.krb5_princ.length=in->krb5_client_princ_len;
176 		a.krb5_princ.type=V_ASN1_OCTET_STRING;
177 		a.krb5_princ.data=in->krb5_client_princ;
178 		}
179 #endif /* OPENSSL_NO_KRB5 */
180 
181 	if (in->time != 0L)
182 		{
183 		a.time.length=LSIZE2;
184 		a.time.type=V_ASN1_INTEGER;
185 		a.time.data=ibuf3;
186 		ASN1_INTEGER_set(&(a.time),in->time);
187 		}
188 
189 	if (in->timeout != 0L)
190 		{
191 		a.timeout.length=LSIZE2;
192 		a.timeout.type=V_ASN1_INTEGER;
193 		a.timeout.data=ibuf4;
194 		ASN1_INTEGER_set(&(a.timeout),in->timeout);
195 		}
196 
197 	if (in->verify_result != X509_V_OK)
198 		{
199 		a.verify_result.length=LSIZE2;
200 		a.verify_result.type=V_ASN1_INTEGER;
201 		a.verify_result.data=ibuf5;
202 		ASN1_INTEGER_set(&a.verify_result,in->verify_result);
203 		}
204 
205 #ifndef OPENSSL_NO_TLSEXT
206 	if (in->tlsext_hostname)
207                 {
208                 a.tlsext_hostname.length=strlen(in->tlsext_hostname);
209                 a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
210                 a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
211                 }
212 	if (in->tlsext_tick)
213                 {
214                 a.tlsext_tick.length= in->tlsext_ticklen;
215                 a.tlsext_tick.type=V_ASN1_OCTET_STRING;
216                 a.tlsext_tick.data=(unsigned char *)in->tlsext_tick;
217                 }
218 	if (in->tlsext_tick_lifetime_hint > 0)
219 		{
220 		a.tlsext_tick_lifetime.length=LSIZE2;
221 		a.tlsext_tick_lifetime.type=V_ASN1_INTEGER;
222 		a.tlsext_tick_lifetime.data=ibuf6;
223 		ASN1_INTEGER_set(&a.tlsext_tick_lifetime,in->tlsext_tick_lifetime_hint);
224 		}
225 #endif /* OPENSSL_NO_TLSEXT */
226 	M_ASN1_I2D_len(&(a.version),		i2d_ASN1_INTEGER);
227 	M_ASN1_I2D_len(&(a.ssl_version),	i2d_ASN1_INTEGER);
228 	M_ASN1_I2D_len(&(a.cipher),		i2d_ASN1_OCTET_STRING);
229 	M_ASN1_I2D_len(&(a.session_id),		i2d_ASN1_OCTET_STRING);
230 	M_ASN1_I2D_len(&(a.master_key),		i2d_ASN1_OCTET_STRING);
231 #ifndef OPENSSL_NO_KRB5
232 	if (in->krb5_client_princ_len)
233         	M_ASN1_I2D_len(&(a.krb5_princ),	i2d_ASN1_OCTET_STRING);
234 #endif /* OPENSSL_NO_KRB5 */
235 	if (in->key_arg_length > 0)
236 		M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
237 	if (in->time != 0L)
238 		M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
239 	if (in->timeout != 0L)
240 		M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
241 	if (in->peer != NULL)
242 		M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
243 	M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
244 	if (in->verify_result != X509_V_OK)
245 		M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
246 
247 #ifndef OPENSSL_NO_TLSEXT
248 	if (in->tlsext_tick_lifetime_hint > 0)
249       	 	M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
250 	if (in->tlsext_tick)
251         	M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
252 	if (in->tlsext_hostname)
253         	M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
254 #ifndef OPENSSL_NO_COMP
255 	if (in->compress_meth)
256         	M_ASN1_I2D_len_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
257 #endif
258 #endif /* OPENSSL_NO_TLSEXT */
259 	M_ASN1_I2D_seq_total();
260 
261 	M_ASN1_I2D_put(&(a.version),		i2d_ASN1_INTEGER);
262 	M_ASN1_I2D_put(&(a.ssl_version),	i2d_ASN1_INTEGER);
263 	M_ASN1_I2D_put(&(a.cipher),		i2d_ASN1_OCTET_STRING);
264 	M_ASN1_I2D_put(&(a.session_id),		i2d_ASN1_OCTET_STRING);
265 	M_ASN1_I2D_put(&(a.master_key),		i2d_ASN1_OCTET_STRING);
266 #ifndef OPENSSL_NO_KRB5
267 	if (in->krb5_client_princ_len)
268         	M_ASN1_I2D_put(&(a.krb5_princ),	i2d_ASN1_OCTET_STRING);
269 #endif /* OPENSSL_NO_KRB5 */
270 	if (in->key_arg_length > 0)
271 		M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
272 	if (in->time != 0L)
273 		M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
274 	if (in->timeout != 0L)
275 		M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
276 	if (in->peer != NULL)
277 		M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
278 	M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
279 			       v4);
280 	if (in->verify_result != X509_V_OK)
281 		M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
282 #ifndef OPENSSL_NO_TLSEXT
283 	if (in->tlsext_hostname)
284         	M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
285 	if (in->tlsext_tick_lifetime_hint > 0)
286       	 	M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
287 	if (in->tlsext_tick)
288         	M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
289 #endif /* OPENSSL_NO_TLSEXT */
290 #ifndef OPENSSL_NO_COMP
291 	if (in->compress_meth)
292         	M_ASN1_I2D_put_EXP_opt(&(a.comp_id), i2d_ASN1_OCTET_STRING,11,v11);
293 #endif
294 	M_ASN1_I2D_finish();
295 	}
296 
297 SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
298 	     long length)
299 	{
300 	int ssl_version=0,i;
301 	long id;
302 	ASN1_INTEGER ai,*aip;
303 	ASN1_OCTET_STRING os,*osp;
304 	M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
305 
306 	aip= &ai;
307 	osp= &os;
308 
309 	M_ASN1_D2I_Init();
310 	M_ASN1_D2I_start_sequence();
311 
312 	ai.data=NULL; ai.length=0;
313 	M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
314 	if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
315 
316 	/* we don't care about the version right now :-) */
317 	M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
318 	ssl_version=(int)ASN1_INTEGER_get(aip);
319 	ret->ssl_version=ssl_version;
320 	if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
321 
322 	os.data=NULL; os.length=0;
323 	M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
324 	if (ssl_version == SSL2_VERSION)
325 		{
326 		if (os.length != 3)
327 			{
328 			c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
329 			goto err;
330 			}
331 		id=0x02000000L|
332 			((unsigned long)os.data[0]<<16L)|
333 			((unsigned long)os.data[1]<< 8L)|
334 			 (unsigned long)os.data[2];
335 		}
336 	else if ((ssl_version>>8) >= SSL3_VERSION_MAJOR)
337 		{
338 		if (os.length != 2)
339 			{
340 			c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
341 			goto err;
342 			}
343 		id=0x03000000L|
344 			((unsigned long)os.data[0]<<8L)|
345 			 (unsigned long)os.data[1];
346 		}
347 	else
348 		{
349 		c.error=SSL_R_UNKNOWN_SSL_VERSION;
350 		goto err;
351 		}
352 
353 	ret->cipher=NULL;
354 	ret->cipher_id=id;
355 
356 	M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
357 	if ((ssl_version>>8) >= SSL3_VERSION_MAJOR)
358 		i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
359 	else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
360 		i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
361 
362 	if (os.length > i)
363 		os.length = i;
364 	if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
365 		os.length = sizeof(ret->session_id);
366 
367 	ret->session_id_length=os.length;
368 	OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
369 	memcpy(ret->session_id,os.data,os.length);
370 
371 	M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
372 	if (os.length > SSL_MAX_MASTER_KEY_LENGTH)
373 		ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
374 	else
375 		ret->master_key_length=os.length;
376 	memcpy(ret->master_key,os.data,ret->master_key_length);
377 
378 	os.length=0;
379 
380 #ifndef OPENSSL_NO_KRB5
381 	os.length=0;
382 	M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
383 	if (os.data)
384 		{
385         	if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
386             		ret->krb5_client_princ_len=0;
387 		else
388 			ret->krb5_client_princ_len=os.length;
389 		memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
390 		OPENSSL_free(os.data);
391 		os.data = NULL;
392 		os.length = 0;
393 		}
394 	else
395 		ret->krb5_client_princ_len=0;
396 #endif /* OPENSSL_NO_KRB5 */
397 
398 	M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
399 	if (os.length > SSL_MAX_KEY_ARG_LENGTH)
400 		ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
401 	else
402 		ret->key_arg_length=os.length;
403 	memcpy(ret->key_arg,os.data,ret->key_arg_length);
404 	if (os.data != NULL) OPENSSL_free(os.data);
405 
406 	ai.length=0;
407 	M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
408 	if (ai.data != NULL)
409 		{
410 		ret->time=ASN1_INTEGER_get(aip);
411 		OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
412 		}
413 	else
414 		ret->time=(unsigned long)time(NULL);
415 
416 	ai.length=0;
417 	M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
418 	if (ai.data != NULL)
419 		{
420 		ret->timeout=ASN1_INTEGER_get(aip);
421 		OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
422 		}
423 	else
424 		ret->timeout=3;
425 
426 	if (ret->peer != NULL)
427 		{
428 		X509_free(ret->peer);
429 		ret->peer=NULL;
430 		}
431 	M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
432 
433 	os.length=0;
434 	os.data=NULL;
435 	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
436 
437 	if(os.data != NULL)
438 	    {
439 	    if (os.length > SSL_MAX_SID_CTX_LENGTH)
440 		{
441 		c.error=SSL_R_BAD_LENGTH;
442 		goto err;
443 		}
444 	    else
445 		{
446 		ret->sid_ctx_length=os.length;
447 		memcpy(ret->sid_ctx,os.data,os.length);
448 		}
449 	    OPENSSL_free(os.data); os.data=NULL; os.length=0;
450 	    }
451 	else
452 	    ret->sid_ctx_length=0;
453 
454 	ai.length=0;
455 	M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
456 	if (ai.data != NULL)
457 		{
458 		ret->verify_result=ASN1_INTEGER_get(aip);
459 		OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
460 		}
461 	else
462 		ret->verify_result=X509_V_OK;
463 
464 #ifndef OPENSSL_NO_TLSEXT
465 	os.length=0;
466 	os.data=NULL;
467 	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
468 	if (os.data)
469 		{
470 		ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
471 		OPENSSL_free(os.data);
472 		os.data = NULL;
473 		os.length = 0;
474 		}
475 	else
476 		ret->tlsext_hostname=NULL;
477 	ai.length=0;
478 	M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,9);
479 	if (ai.data != NULL)
480 		{
481 		ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip);
482 		OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
483 		}
484 	else if (ret->tlsext_ticklen && ret->session_id_length)
485 		ret->tlsext_tick_lifetime_hint = -1;
486 	else
487 		ret->tlsext_tick_lifetime_hint = 0;
488  	os.length=0;
489  	os.data=NULL;
490   	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
491  	if (os.data)
492  		{
493 		ret->tlsext_tick = os.data;
494 		ret->tlsext_ticklen = os.length;
495  		os.data = NULL;
496  		os.length = 0;
497  		}
498 	else
499 		ret->tlsext_tick=NULL;
500 #endif /* OPENSSL_NO_TLSEXT */
501 #ifndef OPENSSL_NO_COMP
502 	os.length=0;
503 	os.data=NULL;
504 	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,11);
505 	if (os.data)
506 		{
507 		ret->compress_meth = os.data[0];
508 		OPENSSL_free(os.data);
509 		os.data = NULL;
510 		}
511 #endif
512 
513 	M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
514 	}
515