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d02b48c6 | 1 | /* ssl/s2_lib.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 | ||
79df9d62 | 59 | #ifndef NO_RSA |
d02b48c6 | 60 | #include <stdio.h> |
ec577822 BM |
61 | #include <openssl/rsa.h> |
62 | #include <openssl/objects.h> | |
d02f751c | 63 | #include <openssl/md5.h> |
d02b48c6 RE |
64 | #include "ssl_locl.h" |
65 | ||
d02b48c6 | 66 | static long ssl2_default_timeout(void ); |
e778802f | 67 | const char *ssl2_version_str="SSLv2" OPENSSL_VERSION_PTEXT; |
d02b48c6 RE |
68 | |
69 | #define SSL2_NUM_CIPHERS (sizeof(ssl2_ciphers)/sizeof(SSL_CIPHER)) | |
70 | ||
7f0dae32 | 71 | OPENSSL_GLOBAL SSL_CIPHER ssl2_ciphers[]={ |
d02b48c6 RE |
72 | /* NULL_WITH_MD5 v3 */ |
73 | #if 0 | |
74 | { | |
75 | 1, | |
76 | SSL2_TXT_NULL_WITH_MD5, | |
77 | SSL2_CK_NULL_WITH_MD5, | |
06ab81f9 | 78 | SSL_kRSA|SSL_aRSA|SSL_eNULL|SSL_MD5|SSL_EXP40|SSL_SSLV2, |
d02b48c6 RE |
79 | 0, |
80 | SSL_ALL_CIPHERS, | |
81 | }, | |
82 | #endif | |
83 | /* RC4_128_EXPORT40_WITH_MD5 */ | |
84 | { | |
85 | 1, | |
86 | SSL2_TXT_RC4_128_EXPORT40_WITH_MD5, | |
87 | SSL2_CK_RC4_128_EXPORT40_WITH_MD5, | |
06ab81f9 | 88 | SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_EXP40|SSL_SSLV2, |
d02b48c6 RE |
89 | SSL2_CF_5_BYTE_ENC, |
90 | SSL_ALL_CIPHERS, | |
91 | }, | |
92 | /* RC4_128_WITH_MD5 */ | |
93 | { | |
94 | 1, | |
95 | SSL2_TXT_RC4_128_WITH_MD5, | |
96 | SSL2_CK_RC4_128_WITH_MD5, | |
a040ea82 | 97 | SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_NOT_EXP|SSL_SSLV2|SSL_MEDIUM, |
d02b48c6 RE |
98 | 0, |
99 | SSL_ALL_CIPHERS, | |
100 | }, | |
101 | /* RC2_128_CBC_EXPORT40_WITH_MD5 */ | |
102 | { | |
103 | 1, | |
104 | SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5, | |
105 | SSL2_CK_RC2_128_CBC_EXPORT40_WITH_MD5, | |
06ab81f9 | 106 | SSL_kRSA|SSL_aRSA|SSL_RC2|SSL_MD5|SSL_EXP40|SSL_SSLV2, |
d02b48c6 RE |
107 | SSL2_CF_5_BYTE_ENC, |
108 | SSL_ALL_CIPHERS, | |
109 | }, | |
110 | /* RC2_128_CBC_WITH_MD5 */ | |
111 | { | |
112 | 1, | |
113 | SSL2_TXT_RC2_128_CBC_WITH_MD5, | |
114 | SSL2_CK_RC2_128_CBC_WITH_MD5, | |
a040ea82 | 115 | SSL_kRSA|SSL_aRSA|SSL_RC2|SSL_MD5|SSL_NOT_EXP|SSL_SSLV2|SSL_MEDIUM, |
d02b48c6 RE |
116 | 0, |
117 | SSL_ALL_CIPHERS, | |
118 | }, | |
119 | /* IDEA_128_CBC_WITH_MD5 */ | |
120 | { | |
121 | 1, | |
122 | SSL2_TXT_IDEA_128_CBC_WITH_MD5, | |
123 | SSL2_CK_IDEA_128_CBC_WITH_MD5, | |
a040ea82 | 124 | SSL_kRSA|SSL_aRSA|SSL_IDEA|SSL_MD5|SSL_NOT_EXP|SSL_SSLV2|SSL_MEDIUM, |
d02b48c6 RE |
125 | 0, |
126 | SSL_ALL_CIPHERS, | |
127 | }, | |
128 | /* DES_64_CBC_WITH_MD5 */ | |
129 | { | |
130 | 1, | |
131 | SSL2_TXT_DES_64_CBC_WITH_MD5, | |
132 | SSL2_CK_DES_64_CBC_WITH_MD5, | |
a040ea82 | 133 | SSL_kRSA|SSL_aRSA|SSL_DES|SSL_MD5|SSL_NOT_EXP|SSL_SSLV2|SSL_LOW, |
d02b48c6 RE |
134 | 0, |
135 | SSL_ALL_CIPHERS, | |
136 | }, | |
d02b48c6 RE |
137 | /* DES_192_EDE3_CBC_WITH_MD5 */ |
138 | { | |
139 | 1, | |
140 | SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5, | |
141 | SSL2_CK_DES_192_EDE3_CBC_WITH_MD5, | |
a040ea82 | 142 | SSL_kRSA|SSL_aRSA|SSL_3DES|SSL_MD5|SSL_NOT_EXP|SSL_SSLV2|SSL_HIGH, |
d02b48c6 RE |
143 | 0, |
144 | SSL_ALL_CIPHERS, | |
145 | }, | |
d02b48c6 RE |
146 | /* RC4_64_WITH_MD5 */ |
147 | #if 1 | |
148 | { | |
149 | 1, | |
150 | SSL2_TXT_RC4_64_WITH_MD5, | |
151 | SSL2_CK_RC4_64_WITH_MD5, | |
152 | SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_SSLV2|SSL_LOW, | |
153 | SSL2_CF_8_BYTE_ENC, | |
154 | SSL_ALL_CIPHERS, | |
155 | }, | |
156 | #endif | |
157 | /* NULL SSLeay (testing) */ | |
158 | #if 0 | |
159 | { | |
160 | 0, | |
161 | SSL2_TXT_NULL, | |
162 | SSL2_CK_NULL, | |
163 | 0, | |
164 | SSL_ALL_CIPHERS, | |
165 | }, | |
166 | #endif | |
167 | ||
168 | /* end of list :-) */ | |
169 | }; | |
170 | ||
171 | static SSL_METHOD SSLv2_data= { | |
58964a49 | 172 | SSL2_VERSION, |
d02b48c6 RE |
173 | ssl2_new, /* local */ |
174 | ssl2_clear, /* local */ | |
175 | ssl2_free, /* local */ | |
176 | ssl_undefined_function, | |
177 | ssl_undefined_function, | |
178 | ssl2_read, | |
179 | ssl2_peek, | |
180 | ssl2_write, | |
181 | ssl2_shutdown, | |
dfeab068 RE |
182 | ssl_ok, /* NULL - renegotiate */ |
183 | ssl_ok, /* NULL - check renegotiate */ | |
d02b48c6 RE |
184 | ssl2_ctrl, /* local */ |
185 | ssl2_ctx_ctrl, /* local */ | |
186 | ssl2_get_cipher_by_char, | |
187 | ssl2_put_cipher_by_char, | |
188 | ssl2_pending, | |
189 | ssl2_num_ciphers, | |
190 | ssl2_get_cipher, | |
191 | ssl_bad_method, | |
192 | ssl2_default_timeout, | |
58964a49 | 193 | &ssl3_undef_enc_method, |
d02b48c6 RE |
194 | }; |
195 | ||
6b691a5c | 196 | static long ssl2_default_timeout(void) |
d02b48c6 RE |
197 | { |
198 | return(300); | |
199 | } | |
200 | ||
6b691a5c | 201 | SSL_METHOD *sslv2_base_method(void) |
d02b48c6 RE |
202 | { |
203 | return(&SSLv2_data); | |
204 | } | |
205 | ||
6b691a5c | 206 | int ssl2_num_ciphers(void) |
d02b48c6 RE |
207 | { |
208 | return(SSL2_NUM_CIPHERS); | |
209 | } | |
210 | ||
6b691a5c | 211 | SSL_CIPHER *ssl2_get_cipher(unsigned int u) |
d02b48c6 RE |
212 | { |
213 | if (u < SSL2_NUM_CIPHERS) | |
214 | return(&(ssl2_ciphers[SSL2_NUM_CIPHERS-1-u])); | |
215 | else | |
216 | return(NULL); | |
217 | } | |
218 | ||
6b691a5c | 219 | int ssl2_pending(SSL *s) |
d02b48c6 RE |
220 | { |
221 | return(s->s2->ract_data_length); | |
222 | } | |
223 | ||
6b691a5c | 224 | int ssl2_new(SSL *s) |
d02b48c6 RE |
225 | { |
226 | SSL2_CTX *s2; | |
227 | ||
228 | if ((s2=(SSL2_CTX *)Malloc(sizeof(SSL2_CTX))) == NULL) goto err; | |
58964a49 | 229 | memset(s2,0,sizeof(SSL2_CTX)); |
d02b48c6 RE |
230 | |
231 | if ((s2->rbuf=(unsigned char *)Malloc( | |
232 | SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER+2)) == NULL) goto err; | |
233 | if ((s2->wbuf=(unsigned char *)Malloc( | |
234 | SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER+2)) == NULL) goto err; | |
235 | s->s2=s2; | |
236 | ||
237 | ssl2_clear(s); | |
238 | return(1); | |
239 | err: | |
240 | if (s2 != NULL) | |
241 | { | |
242 | if (s2->wbuf != NULL) Free(s2->wbuf); | |
243 | if (s2->rbuf != NULL) Free(s2->rbuf); | |
244 | Free(s2); | |
245 | } | |
246 | return(0); | |
247 | } | |
248 | ||
6b691a5c | 249 | void ssl2_free(SSL *s) |
d02b48c6 RE |
250 | { |
251 | SSL2_CTX *s2; | |
252 | ||
e03ddfae BL |
253 | if(s == NULL) |
254 | return; | |
255 | ||
d02b48c6 RE |
256 | s2=s->s2; |
257 | if (s2->rbuf != NULL) Free(s2->rbuf); | |
258 | if (s2->wbuf != NULL) Free(s2->wbuf); | |
259 | memset(s2,0,sizeof(SSL2_CTX)); | |
260 | Free(s2); | |
261 | s->s2=NULL; | |
262 | } | |
263 | ||
6b691a5c | 264 | void ssl2_clear(SSL *s) |
d02b48c6 RE |
265 | { |
266 | SSL2_CTX *s2; | |
267 | unsigned char *rbuf,*wbuf; | |
268 | ||
269 | s2=s->s2; | |
270 | ||
271 | rbuf=s2->rbuf; | |
272 | wbuf=s2->wbuf; | |
273 | ||
274 | memset(s2,0,sizeof(SSL2_CTX)); | |
275 | ||
276 | s2->rbuf=rbuf; | |
277 | s2->wbuf=wbuf; | |
278 | s2->clear_text=1; | |
d02b48c6 | 279 | s->packet=s2->rbuf; |
58964a49 | 280 | s->version=SSL2_VERSION; |
d02b48c6 RE |
281 | s->packet_length=0; |
282 | } | |
283 | ||
6b691a5c | 284 | long ssl2_ctrl(SSL *s, int cmd, long larg, char *parg) |
d02b48c6 | 285 | { |
58964a49 RE |
286 | int ret=0; |
287 | ||
288 | switch(cmd) | |
289 | { | |
290 | case SSL_CTRL_GET_SESSION_REUSED: | |
291 | ret=s->hit; | |
292 | break; | |
293 | default: | |
294 | break; | |
295 | } | |
296 | return(ret); | |
d02b48c6 RE |
297 | } |
298 | ||
6b691a5c | 299 | long ssl2_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, char *parg) |
d02b48c6 RE |
300 | { |
301 | return(0); | |
302 | } | |
303 | ||
304 | /* This function needs to check if the ciphers required are actually | |
305 | * available */ | |
6b691a5c | 306 | SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p) |
d02b48c6 RE |
307 | { |
308 | static int init=1; | |
309 | static SSL_CIPHER *sorted[SSL2_NUM_CIPHERS]; | |
310 | SSL_CIPHER c,*cp= &c,**cpp; | |
311 | unsigned long id; | |
312 | int i; | |
313 | ||
314 | if (init) | |
315 | { | |
5cc146f3 | 316 | CRYPTO_w_lock(CRYPTO_LOCK_SSL); |
d02b48c6 RE |
317 | |
318 | for (i=0; i<SSL2_NUM_CIPHERS; i++) | |
319 | sorted[i]= &(ssl2_ciphers[i]); | |
320 | ||
321 | qsort( (char *)sorted, | |
322 | SSL2_NUM_CIPHERS,sizeof(SSL_CIPHER *), | |
323 | FP_ICC ssl_cipher_ptr_id_cmp); | |
5cc146f3 BM |
324 | |
325 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL); | |
326 | init=0; | |
d02b48c6 RE |
327 | } |
328 | ||
329 | id=0x02000000L|((unsigned long)p[0]<<16L)| | |
330 | ((unsigned long)p[1]<<8L)|(unsigned long)p[2]; | |
331 | c.id=id; | |
332 | cpp=(SSL_CIPHER **)OBJ_bsearch((char *)&cp, | |
333 | (char *)sorted, | |
334 | SSL2_NUM_CIPHERS,sizeof(SSL_CIPHER *), | |
335 | (int (*)())ssl_cipher_ptr_id_cmp); | |
336 | if ((cpp == NULL) || !(*cpp)->valid) | |
337 | return(NULL); | |
338 | else | |
339 | return(*cpp); | |
340 | } | |
341 | ||
6b691a5c | 342 | int ssl2_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p) |
d02b48c6 RE |
343 | { |
344 | long l; | |
345 | ||
346 | if (p != NULL) | |
347 | { | |
348 | l=c->id; | |
349 | if ((l & 0xff000000) != 0x02000000) return(0); | |
350 | p[0]=((unsigned char)(l>>16L))&0xFF; | |
351 | p[1]=((unsigned char)(l>> 8L))&0xFF; | |
352 | p[2]=((unsigned char)(l ))&0xFF; | |
353 | } | |
354 | return(3); | |
355 | } | |
356 | ||
6b691a5c | 357 | void ssl2_generate_key_material(SSL *s) |
d02b48c6 RE |
358 | { |
359 | unsigned int i; | |
360 | MD5_CTX ctx; | |
361 | unsigned char *km; | |
362 | unsigned char c='0'; | |
363 | ||
ca570cfd UM |
364 | #ifdef CHARSET_EBCDIC |
365 | c = os_toascii['0']; /* Must be an ASCII '0', not EBCDIC '0', | |
366 | see SSLv2 docu */ | |
367 | #endif | |
368 | ||
d02b48c6 RE |
369 | km=s->s2->key_material; |
370 | for (i=0; i<s->s2->key_material_length; i+=MD5_DIGEST_LENGTH) | |
371 | { | |
372 | MD5_Init(&ctx); | |
373 | ||
374 | MD5_Update(&ctx,s->session->master_key,s->session->master_key_length); | |
375 | MD5_Update(&ctx,(unsigned char *)&c,1); | |
376 | c++; | |
377 | MD5_Update(&ctx,s->s2->challenge,s->s2->challenge_length); | |
378 | MD5_Update(&ctx,s->s2->conn_id,s->s2->conn_id_length); | |
379 | MD5_Final(km,&ctx); | |
380 | km+=MD5_DIGEST_LENGTH; | |
381 | } | |
382 | } | |
383 | ||
6b691a5c | 384 | void ssl2_return_error(SSL *s, int err) |
d02b48c6 RE |
385 | { |
386 | if (!s->error) | |
387 | { | |
388 | s->error=3; | |
389 | s->error_code=err; | |
390 | ||
391 | ssl2_write_error(s); | |
392 | } | |
393 | } | |
394 | ||
395 | ||
6b691a5c | 396 | void ssl2_write_error(SSL *s) |
d02b48c6 | 397 | { |
61f5b6f3 | 398 | unsigned char buf[3]; |
d02b48c6 RE |
399 | int i,error; |
400 | ||
401 | buf[0]=SSL2_MT_ERROR; | |
402 | buf[1]=(s->error_code>>8)&0xff; | |
403 | buf[2]=(s->error_code)&0xff; | |
404 | ||
405 | /* state=s->rwstate;*/ | |
406 | error=s->error; | |
407 | s->error=0; | |
408 | i=ssl2_write(s,&(buf[3-error]),error); | |
409 | /* if (i == error) s->rwstate=state; */ | |
410 | ||
411 | if (i < 0) | |
412 | s->error=error; | |
413 | else if (i != s->error) | |
414 | s->error=error-i; | |
415 | /* else | |
416 | s->error=0; */ | |
417 | } | |
418 | ||
6b691a5c | 419 | int ssl2_shutdown(SSL *s) |
d02b48c6 RE |
420 | { |
421 | s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN); | |
422 | return(1); | |
423 | } | |
79df9d62 | 424 | #endif |