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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 | */ | |
52b8dad8 BM |
58 | /* ==================================================================== |
59 | * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. | |
60 | * | |
61 | * Redistribution and use in source and binary forms, with or without | |
62 | * modification, are permitted provided that the following conditions | |
63 | * are met: | |
64 | * | |
65 | * 1. Redistributions of source code must retain the above copyright | |
66 | * notice, this list of conditions and the following disclaimer. | |
67 | * | |
68 | * 2. Redistributions in binary form must reproduce the above copyright | |
69 | * notice, this list of conditions and the following disclaimer in | |
70 | * the documentation and/or other materials provided with the | |
71 | * distribution. | |
72 | * | |
73 | * 3. All advertising materials mentioning features or use of this | |
74 | * software must display the following acknowledgment: | |
75 | * "This product includes software developed by the OpenSSL Project | |
76 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
77 | * | |
78 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
79 | * endorse or promote products derived from this software without | |
80 | * prior written permission. For written permission, please contact | |
81 | * openssl-core@openssl.org. | |
82 | * | |
83 | * 5. Products derived from this software may not be called "OpenSSL" | |
84 | * nor may "OpenSSL" appear in their names without prior written | |
85 | * permission of the OpenSSL Project. | |
86 | * | |
87 | * 6. Redistributions of any form whatsoever must retain the following | |
88 | * acknowledgment: | |
89 | * "This product includes software developed by the OpenSSL Project | |
90 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
91 | * | |
92 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
93 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
94 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
95 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
96 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
97 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
98 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
99 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
100 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
101 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
102 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
103 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
104 | * ==================================================================== | |
105 | * | |
106 | * This product includes cryptographic software written by Eric Young | |
107 | * (eay@cryptsoft.com). This product includes software written by Tim | |
108 | * Hudson (tjh@cryptsoft.com). | |
109 | * | |
110 | */ | |
d02b48c6 | 111 | |
aa82db4f | 112 | #include "ssl_locl.h" |
bc36ee62 | 113 | #ifndef OPENSSL_NO_SSL2 |
d02b48c6 | 114 | #include <stdio.h> |
ec577822 | 115 | #include <openssl/objects.h> |
323f289c | 116 | #include <openssl/evp.h> |
dbad1690 | 117 | #include <openssl/md5.h> |
d02b48c6 | 118 | |
42182852 | 119 | const char ssl2_version_str[]="SSLv2" OPENSSL_VERSION_PTEXT; |
d02b48c6 RE |
120 | |
121 | #define SSL2_NUM_CIPHERS (sizeof(ssl2_ciphers)/sizeof(SSL_CIPHER)) | |
122 | ||
6e119bb0 | 123 | /* list of available SSLv2 ciphers (sorted by id) */ |
babb3798 | 124 | OPENSSL_GLOBAL const SSL_CIPHER ssl2_ciphers[]={ |
d02b48c6 | 125 | #if 0 |
52b8dad8 | 126 | /* NULL_WITH_MD5 v3 */ |
d02b48c6 RE |
127 | { |
128 | 1, | |
129 | SSL2_TXT_NULL_WITH_MD5, | |
130 | SSL2_CK_NULL_WITH_MD5, | |
52b8dad8 BM |
131 | SSL_kRSA, |
132 | SSL_aRSA, | |
133 | SSL_eNULL, | |
134 | SSL_MD5, | |
135 | SSL_SSLV2, | |
063a8905 LJ |
136 | SSL_EXPORT|SSL_EXP40|SSL_STRONG_NONE, |
137 | 0, | |
018e57c7 | 138 | 0, |
d02b48c6 | 139 | 0, |
d02b48c6 RE |
140 | }, |
141 | #endif | |
52b8dad8 | 142 | |
d02b48c6 RE |
143 | /* RC4_128_WITH_MD5 */ |
144 | { | |
145 | 1, | |
146 | SSL2_TXT_RC4_128_WITH_MD5, | |
147 | SSL2_CK_RC4_128_WITH_MD5, | |
52b8dad8 BM |
148 | SSL_kRSA, |
149 | SSL_aRSA, | |
150 | SSL_RC4, | |
151 | SSL_MD5, | |
152 | SSL_SSLV2, | |
018e57c7 | 153 | SSL_NOT_EXP|SSL_MEDIUM, |
d02b48c6 | 154 | 0, |
018e57c7 DSH |
155 | 128, |
156 | 128, | |
d02b48c6 | 157 | }, |
52b8dad8 | 158 | |
6e119bb0 | 159 | /* RC4_128_EXPORT40_WITH_MD5 */ |
d02b48c6 RE |
160 | { |
161 | 1, | |
6e119bb0 NL |
162 | SSL2_TXT_RC4_128_EXPORT40_WITH_MD5, |
163 | SSL2_CK_RC4_128_EXPORT40_WITH_MD5, | |
52b8dad8 BM |
164 | SSL_kRSA, |
165 | SSL_aRSA, | |
166 | SSL_RC4, | |
167 | SSL_MD5, | |
168 | SSL_SSLV2, | |
018e57c7 | 169 | SSL_EXPORT|SSL_EXP40, |
d02b48c6 | 170 | SSL2_CF_5_BYTE_ENC, |
018e57c7 DSH |
171 | 40, |
172 | 128, | |
d02b48c6 | 173 | }, |
52b8dad8 | 174 | |
d02b48c6 RE |
175 | /* RC2_128_CBC_WITH_MD5 */ |
176 | { | |
177 | 1, | |
178 | SSL2_TXT_RC2_128_CBC_WITH_MD5, | |
179 | SSL2_CK_RC2_128_CBC_WITH_MD5, | |
52b8dad8 BM |
180 | SSL_kRSA, |
181 | SSL_aRSA, | |
182 | SSL_RC2, | |
183 | SSL_MD5, | |
184 | SSL_SSLV2, | |
018e57c7 | 185 | SSL_NOT_EXP|SSL_MEDIUM, |
d02b48c6 | 186 | 0, |
018e57c7 DSH |
187 | 128, |
188 | 128, | |
d02b48c6 | 189 | }, |
52b8dad8 | 190 | |
6e119bb0 NL |
191 | /* RC2_128_CBC_EXPORT40_WITH_MD5 */ |
192 | { | |
193 | 1, | |
194 | SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5, | |
195 | SSL2_CK_RC2_128_CBC_EXPORT40_WITH_MD5, | |
52b8dad8 BM |
196 | SSL_kRSA, |
197 | SSL_aRSA, | |
198 | SSL_RC2, | |
199 | SSL_MD5, | |
200 | SSL_SSLV2, | |
6e119bb0 NL |
201 | SSL_EXPORT|SSL_EXP40, |
202 | SSL2_CF_5_BYTE_ENC, | |
203 | 40, | |
204 | 128, | |
6e119bb0 | 205 | }, |
52b8dad8 | 206 | |
5fdf0666 | 207 | #ifndef OPENSSL_NO_IDEA |
52b8dad8 | 208 | /* IDEA_128_CBC_WITH_MD5 */ |
d02b48c6 RE |
209 | { |
210 | 1, | |
211 | SSL2_TXT_IDEA_128_CBC_WITH_MD5, | |
212 | SSL2_CK_IDEA_128_CBC_WITH_MD5, | |
52b8dad8 BM |
213 | SSL_kRSA, |
214 | SSL_aRSA, | |
215 | SSL_IDEA, | |
216 | SSL_MD5, | |
217 | SSL_SSLV2, | |
018e57c7 | 218 | SSL_NOT_EXP|SSL_MEDIUM, |
d02b48c6 | 219 | 0, |
018e57c7 DSH |
220 | 128, |
221 | 128, | |
d02b48c6 | 222 | }, |
5fdf0666 | 223 | #endif |
52b8dad8 | 224 | |
d02b48c6 RE |
225 | /* DES_64_CBC_WITH_MD5 */ |
226 | { | |
227 | 1, | |
228 | SSL2_TXT_DES_64_CBC_WITH_MD5, | |
229 | SSL2_CK_DES_64_CBC_WITH_MD5, | |
52b8dad8 BM |
230 | SSL_kRSA, |
231 | SSL_aRSA, | |
232 | SSL_DES, | |
233 | SSL_MD5, | |
234 | SSL_SSLV2, | |
018e57c7 | 235 | SSL_NOT_EXP|SSL_LOW, |
d02b48c6 | 236 | 0, |
018e57c7 DSH |
237 | 56, |
238 | 56, | |
d02b48c6 | 239 | }, |
52b8dad8 | 240 | |
d02b48c6 RE |
241 | /* DES_192_EDE3_CBC_WITH_MD5 */ |
242 | { | |
243 | 1, | |
244 | SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5, | |
245 | SSL2_CK_DES_192_EDE3_CBC_WITH_MD5, | |
52b8dad8 BM |
246 | SSL_kRSA, |
247 | SSL_aRSA, | |
248 | SSL_3DES, | |
249 | SSL_MD5, | |
250 | SSL_SSLV2, | |
018e57c7 | 251 | SSL_NOT_EXP|SSL_HIGH, |
d02b48c6 | 252 | 0, |
018e57c7 DSH |
253 | 168, |
254 | 168, | |
d02b48c6 | 255 | }, |
52b8dad8 | 256 | |
d804f86b | 257 | #if 0 |
52b8dad8 | 258 | /* RC4_64_WITH_MD5 */ |
d02b48c6 RE |
259 | { |
260 | 1, | |
261 | SSL2_TXT_RC4_64_WITH_MD5, | |
262 | SSL2_CK_RC4_64_WITH_MD5, | |
52b8dad8 BM |
263 | SSL_kRSA, |
264 | SSL_aRSA, | |
265 | SSL_RC4, | |
266 | SSL_MD5, | |
267 | SSL_SSLV2, | |
018e57c7 | 268 | SSL_NOT_EXP|SSL_LOW, |
d02b48c6 | 269 | SSL2_CF_8_BYTE_ENC, |
018e57c7 DSH |
270 | 64, |
271 | 64, | |
d02b48c6 RE |
272 | }, |
273 | #endif | |
52b8dad8 | 274 | |
d02b48c6 | 275 | #if 0 |
52b8dad8 | 276 | /* NULL SSLeay (testing) */ |
d02b48c6 RE |
277 | { |
278 | 0, | |
279 | SSL2_TXT_NULL, | |
280 | SSL2_CK_NULL, | |
281 | 0, | |
7e69565f BM |
282 | 0, |
283 | 0, | |
284 | 0, | |
285 | SSL_SSLV2, | |
063a8905 | 286 | SSL_STRONG_NONE, |
018e57c7 DSH |
287 | 0, |
288 | 0, | |
289 | 0, | |
d02b48c6 RE |
290 | }, |
291 | #endif | |
292 | ||
293 | /* end of list :-) */ | |
294 | }; | |
295 | ||
f3b656b2 | 296 | long ssl2_default_timeout(void) |
d02b48c6 RE |
297 | { |
298 | return(300); | |
299 | } | |
300 | ||
6b691a5c | 301 | int ssl2_num_ciphers(void) |
d02b48c6 RE |
302 | { |
303 | return(SSL2_NUM_CIPHERS); | |
304 | } | |
305 | ||
babb3798 | 306 | const SSL_CIPHER *ssl2_get_cipher(unsigned int u) |
d02b48c6 RE |
307 | { |
308 | if (u < SSL2_NUM_CIPHERS) | |
309 | return(&(ssl2_ciphers[SSL2_NUM_CIPHERS-1-u])); | |
310 | else | |
311 | return(NULL); | |
312 | } | |
313 | ||
0821bcd4 | 314 | int ssl2_pending(const SSL *s) |
d02b48c6 | 315 | { |
725c8887 | 316 | return SSL_in_init(s) ? 0 : s->s2->ract_data_length; |
d02b48c6 RE |
317 | } |
318 | ||
6b691a5c | 319 | int ssl2_new(SSL *s) |
d02b48c6 | 320 | { |
b35e9050 | 321 | SSL2_STATE *s2; |
d02b48c6 | 322 | |
26a3a48d | 323 | if ((s2=OPENSSL_malloc(sizeof *s2)) == NULL) goto err; |
b35e9050 | 324 | memset(s2,0,sizeof *s2); |
d02b48c6 | 325 | |
3880cd35 BM |
326 | #if SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER + 3 > SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2 |
327 | # error "assertion failed" | |
328 | #endif | |
329 | ||
26a3a48d | 330 | if ((s2->rbuf=OPENSSL_malloc( |
d02b48c6 | 331 | SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER+2)) == NULL) goto err; |
3880cd35 BM |
332 | /* wbuf needs one byte more because when using two-byte headers, |
333 | * we leave the first byte unused in do_ssl_write (s2_pkt.c) */ | |
26a3a48d | 334 | if ((s2->wbuf=OPENSSL_malloc( |
3880cd35 | 335 | SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER+3)) == NULL) goto err; |
d02b48c6 RE |
336 | s->s2=s2; |
337 | ||
338 | ssl2_clear(s); | |
339 | return(1); | |
340 | err: | |
341 | if (s2 != NULL) | |
342 | { | |
26a3a48d RL |
343 | if (s2->wbuf != NULL) OPENSSL_free(s2->wbuf); |
344 | if (s2->rbuf != NULL) OPENSSL_free(s2->rbuf); | |
345 | OPENSSL_free(s2); | |
d02b48c6 RE |
346 | } |
347 | return(0); | |
348 | } | |
349 | ||
6b691a5c | 350 | void ssl2_free(SSL *s) |
d02b48c6 | 351 | { |
b35e9050 | 352 | SSL2_STATE *s2; |
d02b48c6 | 353 | |
e03ddfae BL |
354 | if(s == NULL) |
355 | return; | |
356 | ||
d02b48c6 | 357 | s2=s->s2; |
26a3a48d RL |
358 | if (s2->rbuf != NULL) OPENSSL_free(s2->rbuf); |
359 | if (s2->wbuf != NULL) OPENSSL_free(s2->wbuf); | |
4579924b | 360 | OPENSSL_cleanse(s2,sizeof *s2); |
26a3a48d | 361 | OPENSSL_free(s2); |
d02b48c6 RE |
362 | s->s2=NULL; |
363 | } | |
364 | ||
6b691a5c | 365 | void ssl2_clear(SSL *s) |
d02b48c6 | 366 | { |
b35e9050 | 367 | SSL2_STATE *s2; |
d02b48c6 RE |
368 | unsigned char *rbuf,*wbuf; |
369 | ||
370 | s2=s->s2; | |
371 | ||
372 | rbuf=s2->rbuf; | |
373 | wbuf=s2->wbuf; | |
374 | ||
b35e9050 | 375 | memset(s2,0,sizeof *s2); |
d02b48c6 RE |
376 | |
377 | s2->rbuf=rbuf; | |
378 | s2->wbuf=wbuf; | |
379 | s2->clear_text=1; | |
d02b48c6 | 380 | s->packet=s2->rbuf; |
58964a49 | 381 | s->version=SSL2_VERSION; |
d02b48c6 RE |
382 | s->packet_length=0; |
383 | } | |
384 | ||
a661b653 | 385 | long ssl2_ctrl(SSL *s, int cmd, long larg, void *parg) |
d02b48c6 | 386 | { |
58964a49 RE |
387 | int ret=0; |
388 | ||
389 | switch(cmd) | |
390 | { | |
391 | case SSL_CTRL_GET_SESSION_REUSED: | |
392 | ret=s->hit; | |
393 | break; | |
394 | default: | |
395 | break; | |
396 | } | |
397 | return(ret); | |
d02b48c6 RE |
398 | } |
399 | ||
41a15c4f | 400 | long ssl2_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) |
d3442bc7 RL |
401 | { |
402 | return(0); | |
403 | } | |
404 | ||
a661b653 | 405 | long ssl2_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) |
d02b48c6 RE |
406 | { |
407 | return(0); | |
408 | } | |
409 | ||
41a15c4f | 410 | long ssl2_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) |
d3442bc7 RL |
411 | { |
412 | return(0); | |
413 | } | |
414 | ||
606f6c47 | 415 | IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, |
e19106f5 | 416 | ssl_cipher_id); |
babb3798 | 417 | |
d02b48c6 RE |
418 | /* This function needs to check if the ciphers required are actually |
419 | * available */ | |
babb3798 | 420 | const SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p) |
d02b48c6 | 421 | { |
babb3798 BL |
422 | SSL_CIPHER c; |
423 | const SSL_CIPHER *cp; | |
d02b48c6 | 424 | unsigned long id; |
d02b48c6 | 425 | |
d02b48c6 RE |
426 | id=0x02000000L|((unsigned long)p[0]<<16L)| |
427 | ((unsigned long)p[1]<<8L)|(unsigned long)p[2]; | |
428 | c.id=id; | |
e19106f5 | 429 | cp = OBJ_bsearch_ssl_cipher_id(&c, ssl2_ciphers, SSL2_NUM_CIPHERS); |
6e119bb0 NL |
430 | if ((cp == NULL) || (cp->valid == 0)) |
431 | return NULL; | |
d02b48c6 | 432 | else |
6e119bb0 | 433 | return cp; |
d02b48c6 RE |
434 | } |
435 | ||
6b691a5c | 436 | int ssl2_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p) |
d02b48c6 RE |
437 | { |
438 | long l; | |
439 | ||
440 | if (p != NULL) | |
441 | { | |
442 | l=c->id; | |
443 | if ((l & 0xff000000) != 0x02000000) return(0); | |
444 | p[0]=((unsigned char)(l>>16L))&0xFF; | |
445 | p[1]=((unsigned char)(l>> 8L))&0xFF; | |
446 | p[2]=((unsigned char)(l ))&0xFF; | |
447 | } | |
448 | return(3); | |
449 | } | |
450 | ||
5574e0ed | 451 | int ssl2_generate_key_material(SSL *s) |
d02b48c6 RE |
452 | { |
453 | unsigned int i; | |
323f289c | 454 | EVP_MD_CTX ctx; |
d02b48c6 RE |
455 | unsigned char *km; |
456 | unsigned char c='0'; | |
5574e0ed | 457 | const EVP_MD *md5; |
0eab41fb | 458 | int md_size; |
5574e0ed BM |
459 | |
460 | md5 = EVP_md5(); | |
d02b48c6 | 461 | |
ca570cfd UM |
462 | #ifdef CHARSET_EBCDIC |
463 | c = os_toascii['0']; /* Must be an ASCII '0', not EBCDIC '0', | |
464 | see SSLv2 docu */ | |
465 | #endif | |
dbad1690 | 466 | EVP_MD_CTX_init(&ctx); |
d02b48c6 | 467 | km=s->s2->key_material; |
5574e0ed | 468 | |
27545970 GT |
469 | if (s->session->master_key_length < 0 || |
470 | s->session->master_key_length > (int)sizeof(s->session->master_key)) | |
5574e0ed BM |
471 | { |
472 | SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL, ERR_R_INTERNAL_ERROR); | |
473 | return 0; | |
474 | } | |
0eab41fb BL |
475 | md_size = EVP_MD_size(md5); |
476 | if (md_size < 0) | |
477 | return 0; | |
478 | for (i=0; i<s->s2->key_material_length; i += md_size) | |
d02b48c6 | 479 | { |
0eab41fb | 480 | if (((km - s->s2->key_material) + md_size) > |
27545970 | 481 | (int)sizeof(s->s2->key_material)) |
5574e0ed BM |
482 | { |
483 | /* EVP_DigestFinal_ex() below would write beyond buffer */ | |
484 | SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL, ERR_R_INTERNAL_ERROR); | |
485 | return 0; | |
486 | } | |
487 | ||
488 | EVP_DigestInit_ex(&ctx, md5, NULL); | |
d02b48c6 | 489 | |
54a656ef BL |
490 | OPENSSL_assert(s->session->master_key_length >= 0 |
491 | && s->session->master_key_length | |
27545970 | 492 | < (int)sizeof(s->session->master_key)); |
323f289c DSH |
493 | EVP_DigestUpdate(&ctx,s->session->master_key,s->session->master_key_length); |
494 | EVP_DigestUpdate(&ctx,&c,1); | |
d02b48c6 | 495 | c++; |
323f289c DSH |
496 | EVP_DigestUpdate(&ctx,s->s2->challenge,s->s2->challenge_length); |
497 | EVP_DigestUpdate(&ctx,s->s2->conn_id,s->s2->conn_id_length); | |
20d2186c | 498 | EVP_DigestFinal_ex(&ctx,km,NULL); |
0eab41fb | 499 | km += md_size; |
d02b48c6 | 500 | } |
5574e0ed | 501 | |
dbad1690 | 502 | EVP_MD_CTX_cleanup(&ctx); |
5574e0ed | 503 | return 1; |
d02b48c6 RE |
504 | } |
505 | ||
6b691a5c | 506 | void ssl2_return_error(SSL *s, int err) |
d02b48c6 RE |
507 | { |
508 | if (!s->error) | |
509 | { | |
510 | s->error=3; | |
511 | s->error_code=err; | |
512 | ||
513 | ssl2_write_error(s); | |
514 | } | |
515 | } | |
516 | ||
517 | ||
6b691a5c | 518 | void ssl2_write_error(SSL *s) |
d02b48c6 | 519 | { |
61f5b6f3 | 520 | unsigned char buf[3]; |
d02b48c6 RE |
521 | int i,error; |
522 | ||
523 | buf[0]=SSL2_MT_ERROR; | |
524 | buf[1]=(s->error_code>>8)&0xff; | |
525 | buf[2]=(s->error_code)&0xff; | |
526 | ||
527 | /* state=s->rwstate;*/ | |
5574e0ed BM |
528 | |
529 | error=s->error; /* number of bytes left to write */ | |
d02b48c6 | 530 | s->error=0; |
27545970 | 531 | OPENSSL_assert(error >= 0 && error <= (int)sizeof(buf)); |
d02b48c6 | 532 | i=ssl2_write(s,&(buf[3-error]),error); |
5574e0ed | 533 | |
d02b48c6 RE |
534 | /* if (i == error) s->rwstate=state; */ |
535 | ||
536 | if (i < 0) | |
537 | s->error=error; | |
cf82191d BM |
538 | else |
539 | { | |
d02b48c6 | 540 | s->error=error-i; |
cf82191d BM |
541 | |
542 | if (s->error == 0) | |
543 | if (s->msg_callback) | |
544 | s->msg_callback(1, s->version, 0, buf, 3, s, s->msg_callback_arg); /* ERROR */ | |
545 | } | |
d02b48c6 RE |
546 | } |
547 | ||
6b691a5c | 548 | int ssl2_shutdown(SSL *s) |
d02b48c6 RE |
549 | { |
550 | s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN); | |
551 | return(1); | |
552 | } | |
bc36ee62 | 553 | #else /* !OPENSSL_NO_SSL2 */ |
752d706a BL |
554 | |
555 | # if PEDANTIC | |
556 | static void *dummy=&dummy; | |
557 | # endif | |
558 | ||
79df9d62 | 559 | #endif |