2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * ====================================================================
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).
114 #include <openssl/buffer.h>
115 #include <openssl/rand.h>
116 #include <openssl/objects.h>
117 #include <openssl/evp.h>
118 #include <openssl/x509.h>
119 #include "ssl_locl.h"
121 /* send s->init_buf in records of type 'type' */
122 int ssl3_do_write(SSL
*s
, int type
)
126 ret
=ssl3_write_bytes(s
,type
,&s
->init_buf
->data
[s
->init_off
],
128 if (ret
< 0) return(-1);
129 if (type
== SSL3_RT_HANDSHAKE
)
130 /* should not be done for 'Hello Request's, but in that case
131 * we'll ignore the result anyway */
132 ssl3_finish_mac(s
,(unsigned char *)&s
->init_buf
->data
[s
->init_off
],ret
);
134 if (ret
== s
->init_num
)
141 int ssl3_send_finished(SSL
*s
, int a
, int b
, const char *sender
, int slen
)
149 d
=(unsigned char *)s
->init_buf
->data
;
152 i
=s
->method
->ssl3_enc
->final_finish_mac(s
,
153 &(s
->s3
->finish_dgst1
),
154 &(s
->s3
->finish_dgst2
),
155 sender
,slen
,s
->s3
->tmp
.finish_md
);
156 s
->s3
->tmp
.finish_md_len
= i
;
157 memcpy(p
, s
->s3
->tmp
.finish_md
, i
);
161 #ifdef OPENSSL_SYS_WIN16
162 /* MSVC 1.5 does not clear the top bytes of the word unless
168 *(d
++)=SSL3_MT_FINISHED
;
170 s
->init_num
=(int)l
+4;
176 /* SSL3_ST_SEND_xxxxxx_HELLO_B */
177 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
180 int ssl3_get_finished(SSL
*s
, int a
, int b
)
186 /* the mac has already been generated when we received the
187 * change cipher spec message and is in s->s3->tmp.peer_finish_md
190 n
=ssl3_get_message(s
,
194 64, /* should actually be 36+4 :-) */
197 if (!ok
) return((int)n
);
199 /* If this occurs, we have missed a message */
200 if (!s
->s3
->change_cipher_spec
)
202 al
=SSL_AD_UNEXPECTED_MESSAGE
;
203 SSLerr(SSL_F_SSL3_GET_FINISHED
,SSL_R_GOT_A_FIN_BEFORE_A_CCS
);
206 s
->s3
->change_cipher_spec
=0;
208 p
= (unsigned char *)s
->init_buf
->data
;
209 i
= s
->s3
->tmp
.peer_finish_md_len
;
213 al
=SSL_AD_DECODE_ERROR
;
214 SSLerr(SSL_F_SSL3_GET_FINISHED
,SSL_R_BAD_DIGEST_LENGTH
);
218 if (memcmp(p
, s
->s3
->tmp
.peer_finish_md
, i
) != 0)
220 al
=SSL_AD_DECRYPT_ERROR
;
221 SSLerr(SSL_F_SSL3_GET_FINISHED
,SSL_R_DIGEST_CHECK_FAILED
);
227 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
231 /* for these 2 messages, we need to
232 * ssl->enc_read_ctx re-init
233 * ssl->s3->read_sequence zero
234 * ssl->s3->read_mac_secret re-init
235 * ssl->session->read_sym_enc assign
236 * ssl->session->read_compression assign
237 * ssl->session->read_hash assign
239 int ssl3_send_change_cipher_spec(SSL
*s
, int a
, int b
)
245 p
=(unsigned char *)s
->init_buf
->data
;
253 /* SSL3_ST_CW_CHANGE_B */
254 return(ssl3_do_write(s
,SSL3_RT_CHANGE_CIPHER_SPEC
));
257 unsigned long ssl3_output_cert_chain(SSL
*s
, X509
*x
)
263 X509_STORE_CTX xs_ctx
;
266 /* TLSv1 sends a chain with nothing in it, instead of an alert */
268 if (!BUF_MEM_grow(buf
,(int)(10)))
270 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN
,ERR_R_BUF_LIB
);
275 X509_STORE_CTX_init(&xs_ctx
,s
->ctx
->cert_store
,NULL
,NULL
);
280 if (!BUF_MEM_grow(buf
,(int)(n
+l
+3)))
282 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN
,ERR_R_BUF_LIB
);
285 p
=(unsigned char *)&(buf
->data
[l
]);
289 if (X509_NAME_cmp(X509_get_subject_name(x
),
290 X509_get_issuer_name(x
)) == 0) break;
292 i
=X509_STORE_get_by_subject(&xs_ctx
,X509_LU_X509
,
293 X509_get_issuer_name(x
),&obj
);
296 /* Count is one too high since the X509_STORE_get uped the
301 X509_STORE_CTX_cleanup(&xs_ctx
);
304 /* Thawte special :-) */
305 if (s
->ctx
->extra_certs
!= NULL
)
306 for (i
=0; i
<sk_X509_num(s
->ctx
->extra_certs
); i
++)
308 x
=sk_X509_value(s
->ctx
->extra_certs
,i
);
310 if (!BUF_MEM_grow(buf
,(int)(n
+l
+3)))
312 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN
,ERR_R_BUF_LIB
);
315 p
=(unsigned char *)&(buf
->data
[l
]);
322 p
=(unsigned char *)&(buf
->data
[4]);
325 p
=(unsigned char *)&(buf
->data
[0]);
326 *(p
++)=SSL3_MT_CERTIFICATE
;
332 /* Obtain handshake message of message type 'mt' (any if mt == -1),
333 * maximum acceptable body length 'max'.
334 * The first four bytes (msg_type and length) are read in state 'st1',
335 * the body is read in state 'stn'.
337 long ssl3_get_message(SSL
*s
, int st1
, int stn
, int mt
, long max
, int *ok
)
344 if (s
->s3
->tmp
.reuse_message
)
346 s
->s3
->tmp
.reuse_message
=0;
347 if ((mt
>= 0) && (s
->s3
->tmp
.message_type
!= mt
))
349 al
=SSL_AD_UNEXPECTED_MESSAGE
;
350 SSLerr(SSL_F_SSL3_GET_MESSAGE
,SSL_R_UNEXPECTED_MESSAGE
);
354 return((int)s
->s3
->tmp
.message_size
);
357 p
=(unsigned char *)s
->init_buf
->data
;
359 if (s
->state
== st1
) /* s->init_num < 4 */
365 while (s
->init_num
< 4)
367 i
=ssl3_read_bytes(s
,SSL3_RT_HANDSHAKE
,&p
[s
->init_num
],
371 s
->rwstate
=SSL_READING
;
380 if (p
[0] == SSL3_MT_HELLO_REQUEST
)
381 /* The server may always send 'Hello Request' messages --
382 * we are doing a handshake anyway now, so ignore them
383 * if their format is correct. Does not count for
385 if (p
[1] == 0 && p
[2] == 0 &&p
[3] == 0)
388 while (skip_message
);
390 /* s->init_num == 4 */
392 if ((mt
>= 0) && (*p
!= mt
))
394 al
=SSL_AD_UNEXPECTED_MESSAGE
;
395 SSLerr(SSL_F_SSL3_GET_MESSAGE
,SSL_R_UNEXPECTED_MESSAGE
);
398 if ((mt
< 0) && (*p
== SSL3_MT_CLIENT_HELLO
) &&
399 (st1
== SSL3_ST_SR_CERT_A
) &&
400 (stn
== SSL3_ST_SR_CERT_B
))
402 /* At this point we have got an MS SGC second client
403 * hello (maybe we should always allow the client to
404 * start a new handshake?). We need to restart the mac.
405 * Don't increment {num,total}_renegotiations because
406 * we have not completed the handshake. */
407 ssl3_init_finished_mac(s
);
410 ssl3_finish_mac(s
, (unsigned char *)s
->init_buf
->data
, 4);
412 s
->s3
->tmp
.message_type
= *(p
++);
415 if (l
> (unsigned long)max
)
417 al
=SSL_AD_ILLEGAL_PARAMETER
;
418 SSLerr(SSL_F_SSL3_GET_MESSAGE
,SSL_R_EXCESSIVE_MESSAGE_SIZE
);
421 if (l
&& !BUF_MEM_grow(s
->init_buf
,(int)l
))
423 SSLerr(SSL_F_SSL3_GET_MESSAGE
,ERR_R_BUF_LIB
);
426 s
->s3
->tmp
.message_size
=l
;
432 /* next state (stn) */
433 p
=(unsigned char *)s
->init_buf
->data
;
434 n
=s
->s3
->tmp
.message_size
;
437 i
=ssl3_read_bytes(s
,SSL3_RT_HANDSHAKE
,&p
[s
->init_num
],n
,0);
440 s
->rwstate
=SSL_READING
;
447 ssl3_finish_mac(s
, (unsigned char *)s
->init_buf
->data
, s
->init_num
);
451 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
457 int ssl_cert_type(X509
*x
, EVP_PKEY
*pkey
)
463 pk
=X509_get_pubkey(x
);
466 if (pk
== NULL
) goto err
;
469 if (i
== EVP_PKEY_RSA
)
471 ret
=SSL_PKEY_RSA_ENC
;
474 j
=X509_get_ext_count(x
);
475 /* check to see if this is a signing only certificate */
476 /* EAY EAY EAY EAY */
479 else if (i
== EVP_PKEY_DSA
)
481 ret
=SSL_PKEY_DSA_SIGN
;
483 else if (i
== EVP_PKEY_DH
)
485 /* if we just have a key, we needs to be guess */
491 j
=X509_get_signature_type(x
);
492 if (j
== EVP_PKEY_RSA
)
494 else if (j
== EVP_PKEY_DSA
)
503 if(!pkey
) EVP_PKEY_free(pk
);
507 int ssl_verify_alarm_type(long type
)
513 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT
:
514 case X509_V_ERR_UNABLE_TO_GET_CRL
:
515 al
=SSL_AD_UNKNOWN_CA
;
517 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE
:
518 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE
:
519 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY
:
520 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD
:
521 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD
:
522 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD
:
523 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD
:
524 case X509_V_ERR_CERT_NOT_YET_VALID
:
525 case X509_V_ERR_CRL_NOT_YET_VALID
:
526 al
=SSL_AD_BAD_CERTIFICATE
;
528 case X509_V_ERR_CERT_SIGNATURE_FAILURE
:
529 case X509_V_ERR_CRL_SIGNATURE_FAILURE
:
530 al
=SSL_AD_DECRYPT_ERROR
;
532 case X509_V_ERR_CERT_HAS_EXPIRED
:
533 case X509_V_ERR_CRL_HAS_EXPIRED
:
534 al
=SSL_AD_CERTIFICATE_EXPIRED
;
536 case X509_V_ERR_CERT_REVOKED
:
537 al
=SSL_AD_CERTIFICATE_REVOKED
;
539 case X509_V_ERR_OUT_OF_MEM
:
540 al
=SSL_AD_INTERNAL_ERROR
;
542 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT
:
543 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN
:
544 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY
:
545 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE
:
546 case X509_V_ERR_CERT_CHAIN_TOO_LONG
:
547 al
=SSL_AD_UNKNOWN_CA
;
549 case X509_V_ERR_APPLICATION_VERIFICATION
:
550 al
=SSL_AD_HANDSHAKE_FAILURE
;
553 al
=SSL_AD_CERTIFICATE_UNKNOWN
;
559 int ssl3_setup_buffers(SSL
*s
)
564 if (s
->s3
->rbuf
.buf
== NULL
)
566 if (s
->options
& SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER
)
567 extra
=SSL3_RT_MAX_EXTRA
;
570 if ((p
=OPENSSL_malloc(SSL3_RT_MAX_PACKET_SIZE
+extra
))
576 if (s
->s3
->wbuf
.buf
== NULL
)
578 if ((p
=OPENSSL_malloc(SSL3_RT_MAX_PACKET_SIZE
))
583 s
->packet
= &(s
->s3
->rbuf
.buf
[0]);
586 SSLerr(SSL_F_SSL3_SETUP_BUFFERS
,ERR_R_MALLOC_FAILURE
);