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-rw-r--r--src/lib/libssl/s3_both.c468
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diff --git a/src/lib/libssl/s3_both.c b/src/lib/libssl/s3_both.c
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--- a/src/lib/libssl/s3_both.c
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1/* ssl/s3_both.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 <openssl/buffer.h>
61#include <openssl/rand.h>
62#include <openssl/objects.h>
63#include <openssl/evp.h>
64#include <openssl/x509.h>
65#include "ssl_locl.h"
66
67int ssl3_send_finished(SSL *s, int a, int b, unsigned char *sender,
68 int slen)
69 {
70 unsigned char *p,*d;
71 int i;
72 unsigned long l;
73
74 if (s->state == a)
75 {
76 d=(unsigned char *)s->init_buf->data;
77 p= &(d[4]);
78
79 i=s->method->ssl3_enc->final_finish_mac(s,
80 &(s->s3->finish_dgst1),
81 &(s->s3->finish_dgst2),
82 sender,slen,p);
83 p+=i;
84 l=i;
85
86#ifdef WIN16
87 /* MSVC 1.5 does not clear the top bytes of the word unless
88 * I do this.
89 */
90 l&=0xffff;
91#endif
92
93 *(d++)=SSL3_MT_FINISHED;
94 l2n3(l,d);
95 s->init_num=(int)l+4;
96 s->init_off=0;
97
98 s->state=b;
99 }
100
101 /* SSL3_ST_SEND_xxxxxx_HELLO_B */
102 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
103 }
104
105int ssl3_get_finished(SSL *s, int a, int b)
106 {
107 int al,i,ok;
108 long n;
109 unsigned char *p;
110
111 /* the mac has already been generated when we received the
112 * change cipher spec message and is in s->s3->tmp.in_dgst[12]
113 */
114
115 n=ssl3_get_message(s,
116 a,
117 b,
118 SSL3_MT_FINISHED,
119 64, /* should actually be 36+4 :-) */
120 &ok);
121
122 if (!ok) return((int)n);
123
124 /* If this occurs if we has missed a message */
125 if (!s->s3->change_cipher_spec)
126 {
127 al=SSL_AD_UNEXPECTED_MESSAGE;
128 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_GOT_A_FIN_BEFORE_A_CCS);
129 goto f_err;
130 }
131 s->s3->change_cipher_spec=0;
132
133 p=(unsigned char *)s->init_buf->data;
134
135 i=s->method->ssl3_enc->finish_mac_length;
136
137 if (i != n)
138 {
139 al=SSL_AD_DECODE_ERROR;
140 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_BAD_DIGEST_LENGTH);
141 goto f_err;
142 }
143
144 if (memcmp( p, (char *)&(s->s3->tmp.finish_md[0]),i) != 0)
145 {
146 al=SSL_AD_DECRYPT_ERROR;
147 SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_DIGEST_CHECK_FAILED);
148 goto f_err;
149 }
150
151 return(1);
152f_err:
153 ssl3_send_alert(s,SSL3_AL_FATAL,al);
154 return(0);
155 }
156
157/* for these 2 messages, we need to
158 * ssl->enc_read_ctx re-init
159 * ssl->s3->read_sequence zero
160 * ssl->s3->read_mac_secret re-init
161 * ssl->session->read_sym_enc assign
162 * ssl->session->read_compression assign
163 * ssl->session->read_hash assign
164 */
165int ssl3_send_change_cipher_spec(SSL *s, int a, int b)
166 {
167 unsigned char *p;
168
169 if (s->state == a)
170 {
171 p=(unsigned char *)s->init_buf->data;
172 *p=SSL3_MT_CCS;
173 s->init_num=1;
174 s->init_off=0;
175
176 s->state=b;
177 }
178
179 /* SSL3_ST_CW_CHANGE_B */
180 return(ssl3_do_write(s,SSL3_RT_CHANGE_CIPHER_SPEC));
181 }
182
183unsigned long ssl3_output_cert_chain(SSL *s, X509 *x)
184 {
185 unsigned char *p;
186 int n,i;
187 unsigned long l=7;
188 BUF_MEM *buf;
189 X509_STORE_CTX xs_ctx;
190 X509_OBJECT obj;
191
192 /* TLSv1 sends a chain with nothing in it, instead of an alert */
193 buf=s->init_buf;
194 if (!BUF_MEM_grow(buf,(int)(10)))
195 {
196 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
197 return(0);
198 }
199 if (x != NULL)
200 {
201 X509_STORE_CTX_init(&xs_ctx,s->ctx->cert_store,NULL,NULL);
202
203 for (;;)
204 {
205 n=i2d_X509(x,NULL);
206 if (!BUF_MEM_grow(buf,(int)(n+l+3)))
207 {
208 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
209 return(0);
210 }
211 p=(unsigned char *)&(buf->data[l]);
212 l2n3(n,p);
213 i2d_X509(x,&p);
214 l+=n+3;
215 if (X509_NAME_cmp(X509_get_subject_name(x),
216 X509_get_issuer_name(x)) == 0) break;
217
218 i=X509_STORE_get_by_subject(&xs_ctx,X509_LU_X509,
219 X509_get_issuer_name(x),&obj);
220 if (i <= 0) break;
221 x=obj.data.x509;
222 /* Count is one too high since the X509_STORE_get uped the
223 * ref count */
224 X509_free(x);
225 }
226
227 X509_STORE_CTX_cleanup(&xs_ctx);
228 }
229
230 /* Thawte special :-) */
231 if (s->ctx->extra_certs != NULL)
232 for (i=0; i<sk_X509_num(s->ctx->extra_certs); i++)
233 {
234 x=sk_X509_value(s->ctx->extra_certs,i);
235 n=i2d_X509(x,NULL);
236 if (!BUF_MEM_grow(buf,(int)(n+l+3)))
237 {
238 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN,ERR_R_BUF_LIB);
239 return(0);
240 }
241 p=(unsigned char *)&(buf->data[l]);
242 l2n3(n,p);
243 i2d_X509(x,&p);
244 l+=n+3;
245 }
246
247 l-=7;
248 p=(unsigned char *)&(buf->data[4]);
249 l2n3(l,p);
250 l+=3;
251 p=(unsigned char *)&(buf->data[0]);
252 *(p++)=SSL3_MT_CERTIFICATE;
253 l2n3(l,p);
254 l+=4;
255 return(l);
256 }
257
258long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
259 {
260 unsigned char *p;
261 unsigned long l;
262 long n;
263 int i,al;
264
265 if (s->s3->tmp.reuse_message)
266 {
267 s->s3->tmp.reuse_message=0;
268 if ((mt >= 0) && (s->s3->tmp.message_type != mt))
269 {
270 al=SSL_AD_UNEXPECTED_MESSAGE;
271 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE);
272 goto f_err;
273 }
274 *ok=1;
275 return((int)s->s3->tmp.message_size);
276 }
277
278 p=(unsigned char *)s->init_buf->data;
279
280 if (s->state == st1)
281 {
282 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],
283 4-s->init_num);
284 if (i < (4-s->init_num))
285 {
286 *ok=0;
287 return(ssl3_part_read(s,i));
288 }
289
290 if ((mt >= 0) && (*p != mt))
291 {
292 al=SSL_AD_UNEXPECTED_MESSAGE;
293 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_UNEXPECTED_MESSAGE);
294 goto f_err;
295 }
296 s->s3->tmp.message_type= *(p++);
297
298 n2l3(p,l);
299 if (l > (unsigned long)max)
300 {
301 al=SSL_AD_ILLEGAL_PARAMETER;
302 SSLerr(SSL_F_SSL3_GET_MESSAGE,SSL_R_EXCESSIVE_MESSAGE_SIZE);
303 goto f_err;
304 }
305 if (l && !BUF_MEM_grow(s->init_buf,(int)l))
306 {
307 SSLerr(SSL_F_SSL3_GET_MESSAGE,ERR_R_BUF_LIB);
308 goto err;
309 }
310 s->s3->tmp.message_size=l;
311 s->state=stn;
312
313 s->init_num=0;
314 }
315
316 /* next state (stn) */
317 p=(unsigned char *)s->init_buf->data;
318 n=s->s3->tmp.message_size;
319 if (n > 0)
320 {
321 i=ssl3_read_bytes(s,SSL3_RT_HANDSHAKE,&p[s->init_num],n);
322 if (i != (int)n)
323 {
324 *ok=0;
325 return(ssl3_part_read(s,i));
326 }
327 }
328 *ok=1;
329 return(n);
330f_err:
331 ssl3_send_alert(s,SSL3_AL_FATAL,al);
332err:
333 *ok=0;
334 return(-1);
335 }
336
337int ssl_cert_type(X509 *x, EVP_PKEY *pkey)
338 {
339 EVP_PKEY *pk;
340 int ret= -1,i,j;
341
342 if (pkey == NULL)
343 pk=X509_get_pubkey(x);
344 else
345 pk=pkey;
346 if (pk == NULL) goto err;
347
348 i=pk->type;
349 if (i == EVP_PKEY_RSA)
350 {
351 ret=SSL_PKEY_RSA_ENC;
352 if (x != NULL)
353 {
354 j=X509_get_ext_count(x);
355 /* check to see if this is a signing only certificate */
356 /* EAY EAY EAY EAY */
357 }
358 }
359 else if (i == EVP_PKEY_DSA)
360 {
361 ret=SSL_PKEY_DSA_SIGN;
362 }
363 else if (i == EVP_PKEY_DH)
364 {
365 /* if we just have a key, we needs to be guess */
366
367 if (x == NULL)
368 ret=SSL_PKEY_DH_DSA;
369 else
370 {
371 j=X509_get_signature_type(x);
372 if (j == EVP_PKEY_RSA)
373 ret=SSL_PKEY_DH_RSA;
374 else if (j== EVP_PKEY_DSA)
375 ret=SSL_PKEY_DH_DSA;
376 else ret= -1;
377 }
378 }
379 else
380 ret= -1;
381
382err:
383 if(!pkey) EVP_PKEY_free(pk);
384 return(ret);
385 }
386
387int ssl_verify_alarm_type(long type)
388 {
389 int al;
390
391 switch(type)
392 {
393 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
394 case X509_V_ERR_UNABLE_TO_GET_CRL:
395 al=SSL_AD_UNKNOWN_CA;
396 break;
397 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
398 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
399 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
400 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
401 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
402 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
403 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
404 case X509_V_ERR_CERT_NOT_YET_VALID:
405 case X509_V_ERR_CRL_NOT_YET_VALID:
406 al=SSL_AD_BAD_CERTIFICATE;
407 break;
408 case X509_V_ERR_CERT_SIGNATURE_FAILURE:
409 case X509_V_ERR_CRL_SIGNATURE_FAILURE:
410 al=SSL_AD_DECRYPT_ERROR;
411 break;
412 case X509_V_ERR_CERT_HAS_EXPIRED:
413 case X509_V_ERR_CRL_HAS_EXPIRED:
414 al=SSL_AD_CERTIFICATE_EXPIRED;
415 break;
416 case X509_V_ERR_CERT_REVOKED:
417 al=SSL_AD_CERTIFICATE_REVOKED;
418 break;
419 case X509_V_ERR_OUT_OF_MEM:
420 al=SSL_AD_INTERNAL_ERROR;
421 break;
422 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
423 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
424 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
425 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
426 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
427 al=SSL_AD_UNKNOWN_CA;
428 break;
429 case X509_V_ERR_APPLICATION_VERIFICATION:
430 al=SSL_AD_HANDSHAKE_FAILURE;
431 break;
432 default:
433 al=SSL_AD_CERTIFICATE_UNKNOWN;
434 break;
435 }
436 return(al);
437 }
438
439int ssl3_setup_buffers(SSL *s)
440 {
441 unsigned char *p;
442 unsigned int extra;
443
444 if (s->s3->rbuf.buf == NULL)
445 {
446 if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER)
447 extra=SSL3_RT_MAX_EXTRA;
448 else
449 extra=0;
450 if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE+extra))
451 == NULL)
452 goto err;
453 s->s3->rbuf.buf=p;
454 }
455
456 if (s->s3->wbuf.buf == NULL)
457 {
458 if ((p=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE))
459 == NULL)
460 goto err;
461 s->s3->wbuf.buf=p;
462 }
463 s->packet= &(s->s3->rbuf.buf[0]);
464 return(1);
465err:
466 SSLerr(SSL_F_SSL3_SETUP_BUFFERS,ERR_R_MALLOC_FAILURE);
467 return(0);
468 }