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d02b48c6 | 1 | /* ssl/ssl_asn1.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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 "asn1_mac.h" | |
62 | #include "objects.h" | |
63 | #include "ssl_locl.h" | |
64 | ||
65 | typedef struct ssl_session_asn1_st | |
66 | { | |
67 | ASN1_INTEGER version; | |
68 | ASN1_INTEGER ssl_version; | |
69 | ASN1_OCTET_STRING cipher; | |
70 | ASN1_OCTET_STRING master_key; | |
71 | ASN1_OCTET_STRING session_id; | |
b4cadc6e | 72 | ASN1_OCTET_STRING session_id_context; |
d02b48c6 RE |
73 | ASN1_OCTET_STRING key_arg; |
74 | ASN1_INTEGER time; | |
75 | ASN1_INTEGER timeout; | |
76 | } SSL_SESSION_ASN1; | |
77 | ||
78 | /* | |
79 | * SSLerr(SSL_F_I2D_SSL_SESSION,SSL_R_CIPHER_CODE_WRONG_LENGTH); | |
80 | * SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_UNSUPPORTED_CIPHER); | |
81 | */ | |
82 | ||
6b691a5c | 83 | int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp) |
d02b48c6 RE |
84 | { |
85 | #define LSIZE2 (sizeof(long)*2) | |
b4cadc6e | 86 | int v1=0,v2=0,v3=0,v4=0; |
d02b48c6 RE |
87 | unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2]; |
88 | unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2]; | |
89 | long l; | |
90 | SSL_SESSION_ASN1 a; | |
91 | M_ASN1_I2D_vars(in); | |
92 | ||
93 | if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0))) | |
94 | return(0); | |
95 | ||
96 | /* Note that I cheat in the following 2 assignments. I know | |
97 | * that if the ASN1_INTERGER passed to ASN1_INTEGER_set | |
98 | * is > sizeof(long)+1, the buffer will not be re-Malloc()ed. | |
99 | * This is a bit evil but makes things simple, no dynamic allocation | |
100 | * to clean up :-) */ | |
101 | a.version.length=LSIZE2; | |
102 | a.version.type=V_ASN1_INTEGER; | |
103 | a.version.data=ibuf1; | |
104 | ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION); | |
105 | ||
106 | a.ssl_version.length=LSIZE2; | |
107 | a.ssl_version.type=V_ASN1_INTEGER; | |
108 | a.ssl_version.data=ibuf2; | |
109 | ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version); | |
110 | ||
111 | a.cipher.type=V_ASN1_OCTET_STRING; | |
112 | a.cipher.data=buf; | |
113 | ||
114 | if (in->cipher == NULL) | |
115 | l=in->cipher_id; | |
116 | else | |
117 | l=in->cipher->id; | |
58964a49 | 118 | if (in->ssl_version == SSL2_VERSION) |
d02b48c6 RE |
119 | { |
120 | a.cipher.length=3; | |
121 | buf[0]=((unsigned char)(l>>16L))&0xff; | |
122 | buf[1]=((unsigned char)(l>> 8L))&0xff; | |
123 | buf[2]=((unsigned char)(l ))&0xff; | |
124 | } | |
125 | else | |
126 | { | |
127 | a.cipher.length=2; | |
128 | buf[0]=((unsigned char)(l>>8L))&0xff; | |
129 | buf[1]=((unsigned char)(l ))&0xff; | |
130 | } | |
131 | ||
132 | a.master_key.length=in->master_key_length; | |
133 | a.master_key.type=V_ASN1_OCTET_STRING; | |
134 | a.master_key.data=in->master_key; | |
135 | ||
136 | a.session_id.length=in->session_id_length; | |
137 | a.session_id.type=V_ASN1_OCTET_STRING; | |
138 | a.session_id.data=in->session_id; | |
139 | ||
b4cadc6e BL |
140 | a.session_id_context.length=in->sid_ctx_length; |
141 | a.session_id_context.type=V_ASN1_OCTET_STRING; | |
142 | a.session_id_context.data=in->sid_ctx; | |
143 | ||
d02b48c6 RE |
144 | a.key_arg.length=in->key_arg_length; |
145 | a.key_arg.type=V_ASN1_OCTET_STRING; | |
146 | a.key_arg.data=in->key_arg; | |
147 | ||
148 | if (in->time != 0L) | |
149 | { | |
150 | a.time.length=LSIZE2; | |
151 | a.time.type=V_ASN1_INTEGER; | |
152 | a.time.data=ibuf3; | |
153 | ASN1_INTEGER_set(&(a.time),in->time); | |
154 | } | |
155 | ||
156 | if (in->timeout != 0L) | |
157 | { | |
158 | a.timeout.length=LSIZE2; | |
159 | a.timeout.type=V_ASN1_INTEGER; | |
160 | a.timeout.data=ibuf4; | |
161 | ASN1_INTEGER_set(&(a.timeout),in->timeout); | |
162 | } | |
163 | ||
164 | M_ASN1_I2D_len(&(a.version), i2d_ASN1_INTEGER); | |
165 | M_ASN1_I2D_len(&(a.ssl_version), i2d_ASN1_INTEGER); | |
166 | M_ASN1_I2D_len(&(a.cipher), i2d_ASN1_OCTET_STRING); | |
167 | M_ASN1_I2D_len(&(a.session_id), i2d_ASN1_OCTET_STRING); | |
168 | M_ASN1_I2D_len(&(a.master_key), i2d_ASN1_OCTET_STRING); | |
169 | if (in->key_arg_length > 0) | |
170 | M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING); | |
171 | if (in->time != 0L) | |
172 | M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1); | |
173 | if (in->timeout != 0L) | |
174 | M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2); | |
175 | if (in->peer != NULL) | |
176 | M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3); | |
b4cadc6e | 177 | M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4); |
d02b48c6 RE |
178 | |
179 | M_ASN1_I2D_seq_total(); | |
180 | ||
181 | M_ASN1_I2D_put(&(a.version), i2d_ASN1_INTEGER); | |
182 | M_ASN1_I2D_put(&(a.ssl_version), i2d_ASN1_INTEGER); | |
183 | M_ASN1_I2D_put(&(a.cipher), i2d_ASN1_OCTET_STRING); | |
184 | M_ASN1_I2D_put(&(a.session_id), i2d_ASN1_OCTET_STRING); | |
185 | M_ASN1_I2D_put(&(a.master_key), i2d_ASN1_OCTET_STRING); | |
186 | if (in->key_arg_length > 0) | |
187 | M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0); | |
188 | if (in->time != 0L) | |
189 | M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1); | |
190 | if (in->timeout != 0L) | |
191 | M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2); | |
192 | if (in->peer != NULL) | |
193 | M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3); | |
b4cadc6e BL |
194 | M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4, |
195 | v4); | |
d02b48c6 RE |
196 | |
197 | M_ASN1_I2D_finish(); | |
198 | } | |
199 | ||
6b691a5c UM |
200 | SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, unsigned char **pp, |
201 | long length) | |
d02b48c6 RE |
202 | { |
203 | int version,ssl_version=0,i; | |
204 | long id; | |
205 | ASN1_INTEGER ai,*aip; | |
206 | ASN1_OCTET_STRING os,*osp; | |
207 | M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new); | |
208 | ||
209 | aip= &ai; | |
210 | osp= &os; | |
211 | ||
212 | M_ASN1_D2I_Init(); | |
213 | M_ASN1_D2I_start_sequence(); | |
214 | ||
215 | ai.data=NULL; ai.length=0; | |
216 | M_ASN1_D2I_get(aip,d2i_ASN1_INTEGER); | |
217 | version=(int)ASN1_INTEGER_get(aip); | |
218 | if (ai.data != NULL) { Free(ai.data); ai.data=NULL; ai.length=0; } | |
219 | ||
220 | /* we don't care about the version right now :-) */ | |
221 | M_ASN1_D2I_get(aip,d2i_ASN1_INTEGER); | |
222 | ssl_version=(int)ASN1_INTEGER_get(aip); | |
223 | ret->ssl_version=ssl_version; | |
224 | if (ai.data != NULL) { Free(ai.data); ai.data=NULL; ai.length=0; } | |
225 | ||
226 | os.data=NULL; os.length=0; | |
227 | M_ASN1_D2I_get(osp,d2i_ASN1_OCTET_STRING); | |
58964a49 | 228 | if (ssl_version == SSL2_VERSION) |
d02b48c6 RE |
229 | { |
230 | if (os.length != 3) | |
231 | { | |
232 | c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH; | |
233 | goto err; | |
234 | } | |
235 | id=0x02000000L| | |
236 | ((unsigned long)os.data[0]<<16L)| | |
237 | ((unsigned long)os.data[1]<< 8L)| | |
238 | (unsigned long)os.data[2]; | |
239 | } | |
58964a49 | 240 | else if ((ssl_version>>8) == 3) |
d02b48c6 RE |
241 | { |
242 | if (os.length != 2) | |
243 | { | |
244 | c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH; | |
245 | goto err; | |
246 | } | |
247 | id=0x03000000L| | |
248 | ((unsigned long)os.data[0]<<8L)| | |
249 | (unsigned long)os.data[1]; | |
250 | } | |
251 | else | |
252 | { | |
253 | SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_UNKNOWN_SSL_VERSION); | |
254 | return(NULL); | |
255 | } | |
256 | ||
257 | ret->cipher=NULL; | |
258 | ret->cipher_id=id; | |
259 | ||
260 | M_ASN1_D2I_get(osp,d2i_ASN1_OCTET_STRING); | |
58964a49 | 261 | if ((ssl_version>>8) == SSL3_VERSION) |
d02b48c6 | 262 | i=SSL3_MAX_SSL_SESSION_ID_LENGTH; |
58964a49 | 263 | else /* if (ssl_version == SSL2_VERSION) */ |
d02b48c6 RE |
264 | i=SSL2_MAX_SSL_SESSION_ID_LENGTH; |
265 | ||
266 | if (os.length > i) | |
267 | os.length=i; | |
268 | ||
269 | ret->session_id_length=os.length; | |
270 | memcpy(ret->session_id,os.data,os.length); | |
271 | ||
272 | M_ASN1_D2I_get(osp,d2i_ASN1_OCTET_STRING); | |
273 | if (ret->master_key_length > SSL_MAX_MASTER_KEY_LENGTH) | |
274 | ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH; | |
275 | else | |
276 | ret->master_key_length=os.length; | |
277 | memcpy(ret->master_key,os.data,ret->master_key_length); | |
278 | ||
279 | os.length=0; | |
280 | M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING); | |
281 | if (os.length > SSL_MAX_KEY_ARG_LENGTH) | |
282 | ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH; | |
283 | else | |
284 | ret->key_arg_length=os.length; | |
285 | memcpy(ret->key_arg,os.data,ret->key_arg_length); | |
286 | if (os.data != NULL) Free(os.data); | |
287 | ||
288 | ai.length=0; | |
289 | M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1); | |
290 | if (ai.data != NULL) | |
291 | { | |
292 | ret->time=ASN1_INTEGER_get(aip); | |
293 | Free(ai.data); ai.data=NULL; ai.length=0; | |
294 | } | |
295 | else | |
296 | ret->time=time(NULL); | |
297 | ||
298 | ai.length=0; | |
299 | M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2); | |
300 | if (ai.data != NULL) | |
301 | { | |
302 | ret->timeout=ASN1_INTEGER_get(aip); | |
303 | Free(ai.data); ai.data=NULL; ai.length=0; | |
304 | } | |
305 | else | |
306 | ret->timeout=3; | |
307 | ||
308 | if (ret->peer != NULL) | |
309 | { | |
310 | X509_free(ret->peer); | |
311 | ret->peer=NULL; | |
312 | } | |
313 | M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3); | |
314 | ||
b4cadc6e BL |
315 | os.length=0; |
316 | os.data=NULL; | |
317 | M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4); | |
318 | ||
319 | if(os.data != NULL) | |
320 | { | |
321 | if (os.length > SSL_MAX_SID_CTX_LENGTH) | |
322 | SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_BAD_LENGTH); | |
323 | ret->sid_ctx_length=os.length; | |
324 | memcpy(ret->sid_ctx,os.data,os.length); | |
325 | Free(os.data); os.data=NULL; os.length=0; | |
326 | } | |
327 | else | |
328 | ret->sid_ctx_length=0; | |
329 | ||
d02b48c6 RE |
330 | M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION); |
331 | } | |
332 |