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.]
61 #include <openssl/buffer.h>
62 #include <openssl/rand.h>
63 #include <openssl/objects.h>
64 #include <openssl/evp.h>
65 #include <openssl/x509.h>
68 int ssl3_send_finished(SSL
*s
, int a
, int b
, const char *sender
, int slen
)
73 unsigned char *finish_md
;
76 if (s
->state
& SSL_ST_ACCEPT
)
78 finish_md
= s
->s3
->tmp
.server_finish_md
;
79 finish_md_len
= &s
->s3
->tmp
.server_finish_md_len
;
83 finish_md
= s
->s3
->tmp
.client_finish_md
;
84 finish_md_len
= &s
->s3
->tmp
.client_finish_md_len
;
89 d
=(unsigned char *)s
->init_buf
->data
;
92 i
=s
->method
->ssl3_enc
->final_finish_mac(s
,
93 &(s
->s3
->finish_dgst1
),
94 &(s
->s3
->finish_dgst2
),
95 sender
,slen
,finish_md
);
97 memcpy(p
, finish_md
, i
);
102 /* MSVC 1.5 does not clear the top bytes of the word unless
108 *(d
++)=SSL3_MT_FINISHED
;
110 s
->init_num
=(int)l
+4;
116 /* SSL3_ST_SEND_xxxxxx_HELLO_B */
117 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
120 int ssl3_get_finished(SSL
*s
, int a
, int b
)
125 unsigned char *finish_md
;
128 if (s
->state
& SSL_ST_ACCEPT
)
130 finish_md
= s
->s3
->tmp
.client_finish_md
;
131 finish_md_len
= &s
->s3
->tmp
.client_finish_md_len
;
135 finish_md
= s
->s3
->tmp
.server_finish_md
;
136 finish_md_len
= &s
->s3
->tmp
.server_finish_md_len
;
139 /* the mac has already been generated when we received the
140 * change cipher spec message and is in finish_md
143 n
=ssl3_get_message(s
,
147 64, /* should actually be 36+4 :-) */
150 if (!ok
) return((int)n
);
152 /* If this occurs if we has missed a message */
153 if (!s
->s3
->change_cipher_spec
)
155 al
=SSL_AD_UNEXPECTED_MESSAGE
;
156 SSLerr(SSL_F_SSL3_GET_FINISHED
,SSL_R_GOT_A_FIN_BEFORE_A_CCS
);
159 s
->s3
->change_cipher_spec
=0;
161 p
=(unsigned char *)s
->init_buf
->data
;
167 al
=SSL_AD_DECODE_ERROR
;
168 SSLerr(SSL_F_SSL3_GET_FINISHED
,SSL_R_BAD_DIGEST_LENGTH
);
172 if (memcmp(p
, finish_md
, i
) != 0)
174 al
=SSL_AD_DECRYPT_ERROR
;
175 SSLerr(SSL_F_SSL3_GET_FINISHED
,SSL_R_DIGEST_CHECK_FAILED
);
181 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
185 /* for these 2 messages, we need to
186 * ssl->enc_read_ctx re-init
187 * ssl->s3->read_sequence zero
188 * ssl->s3->read_mac_secret re-init
189 * ssl->session->read_sym_enc assign
190 * ssl->session->read_compression assign
191 * ssl->session->read_hash assign
193 int ssl3_send_change_cipher_spec(SSL
*s
, int a
, int b
)
199 p
=(unsigned char *)s
->init_buf
->data
;
207 /* SSL3_ST_CW_CHANGE_B */
208 return(ssl3_do_write(s
,SSL3_RT_CHANGE_CIPHER_SPEC
));
211 unsigned long ssl3_output_cert_chain(SSL
*s
, X509
*x
)
217 X509_STORE_CTX xs_ctx
;
220 /* TLSv1 sends a chain with nothing in it, instead of an alert */
222 if (!BUF_MEM_grow(buf
,(int)(10)))
224 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN
,ERR_R_BUF_LIB
);
229 X509_STORE_CTX_init(&xs_ctx
,s
->ctx
->cert_store
,NULL
,NULL
);
234 if (!BUF_MEM_grow(buf
,(int)(n
+l
+3)))
236 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN
,ERR_R_BUF_LIB
);
239 p
=(unsigned char *)&(buf
->data
[l
]);
243 if (X509_NAME_cmp(X509_get_subject_name(x
),
244 X509_get_issuer_name(x
)) == 0) break;
246 i
=X509_STORE_get_by_subject(&xs_ctx
,X509_LU_X509
,
247 X509_get_issuer_name(x
),&obj
);
250 /* Count is one too high since the X509_STORE_get uped the
255 X509_STORE_CTX_cleanup(&xs_ctx
);
258 /* Thawte special :-) */
259 if (s
->ctx
->extra_certs
!= NULL
)
260 for (i
=0; i
<sk_X509_num(s
->ctx
->extra_certs
); i
++)
262 x
=sk_X509_value(s
->ctx
->extra_certs
,i
);
264 if (!BUF_MEM_grow(buf
,(int)(n
+l
+3)))
266 SSLerr(SSL_F_SSL3_OUTPUT_CERT_CHAIN
,ERR_R_BUF_LIB
);
269 p
=(unsigned char *)&(buf
->data
[l
]);
276 p
=(unsigned char *)&(buf
->data
[4]);
279 p
=(unsigned char *)&(buf
->data
[0]);
280 *(p
++)=SSL3_MT_CERTIFICATE
;
286 long ssl3_get_message(SSL
*s
, int st1
, int stn
, int mt
, long max
, int *ok
)
293 if (s
->s3
->tmp
.reuse_message
)
295 s
->s3
->tmp
.reuse_message
=0;
296 if ((mt
>= 0) && (s
->s3
->tmp
.message_type
!= mt
))
298 al
=SSL_AD_UNEXPECTED_MESSAGE
;
299 SSLerr(SSL_F_SSL3_GET_MESSAGE
,SSL_R_UNEXPECTED_MESSAGE
);
303 return((int)s
->s3
->tmp
.message_size
);
306 p
=(unsigned char *)s
->init_buf
->data
;
310 i
=ssl3_read_bytes(s
,SSL3_RT_HANDSHAKE
,&p
[s
->init_num
],
312 if (i
< (4-s
->init_num
))
315 return(ssl3_part_read(s
,i
));
318 if ((mt
>= 0) && (*p
!= mt
))
320 al
=SSL_AD_UNEXPECTED_MESSAGE
;
321 SSLerr(SSL_F_SSL3_GET_MESSAGE
,SSL_R_UNEXPECTED_MESSAGE
);
324 if((mt
< 0) && (*p
== SSL3_MT_CLIENT_HELLO
) &&
325 (st1
== SSL3_ST_SR_CERT_A
) &&
326 (stn
== SSL3_ST_SR_CERT_B
))
328 /* At this point we have got an MS SGC second client
329 * hello. We need to restart the mac and mac the data
330 * currently received.
332 ssl3_init_finished_mac(s
);
333 ssl3_finish_mac(s
, p
+ s
->init_num
, i
);
336 s
->s3
->tmp
.message_type
= *(p
++);
339 if (l
> (unsigned long)max
)
341 al
=SSL_AD_ILLEGAL_PARAMETER
;
342 SSLerr(SSL_F_SSL3_GET_MESSAGE
,SSL_R_EXCESSIVE_MESSAGE_SIZE
);
345 if (l
&& !BUF_MEM_grow(s
->init_buf
,(int)l
))
347 SSLerr(SSL_F_SSL3_GET_MESSAGE
,ERR_R_BUF_LIB
);
350 s
->s3
->tmp
.message_size
=l
;
356 /* next state (stn) */
357 p
=(unsigned char *)s
->init_buf
->data
;
358 n
=s
->s3
->tmp
.message_size
;
361 i
=ssl3_read_bytes(s
,SSL3_RT_HANDSHAKE
,&p
[s
->init_num
],n
);
365 return(ssl3_part_read(s
,i
));
371 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
377 int ssl_cert_type(X509
*x
, EVP_PKEY
*pkey
)
383 pk
=X509_get_pubkey(x
);
386 if (pk
== NULL
) goto err
;
389 if (i
== EVP_PKEY_RSA
)
391 ret
=SSL_PKEY_RSA_ENC
;
394 j
=X509_get_ext_count(x
);
395 /* check to see if this is a signing only certificate */
396 /* EAY EAY EAY EAY */
399 else if (i
== EVP_PKEY_DSA
)
401 ret
=SSL_PKEY_DSA_SIGN
;
403 else if (i
== EVP_PKEY_DH
)
405 /* if we just have a key, we needs to be guess */
411 j
=X509_get_signature_type(x
);
412 if (j
== EVP_PKEY_RSA
)
414 else if (j
== EVP_PKEY_DSA
)
423 if(!pkey
) EVP_PKEY_free(pk
);
427 int ssl_verify_alarm_type(long type
)
433 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT
:
434 case X509_V_ERR_UNABLE_TO_GET_CRL
:
435 al
=SSL_AD_UNKNOWN_CA
;
437 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE
:
438 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE
:
439 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY
:
440 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD
:
441 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD
:
442 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD
:
443 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD
:
444 case X509_V_ERR_CERT_NOT_YET_VALID
:
445 case X509_V_ERR_CRL_NOT_YET_VALID
:
446 al
=SSL_AD_BAD_CERTIFICATE
;
448 case X509_V_ERR_CERT_SIGNATURE_FAILURE
:
449 case X509_V_ERR_CRL_SIGNATURE_FAILURE
:
450 al
=SSL_AD_DECRYPT_ERROR
;
452 case X509_V_ERR_CERT_HAS_EXPIRED
:
453 case X509_V_ERR_CRL_HAS_EXPIRED
:
454 al
=SSL_AD_CERTIFICATE_EXPIRED
;
456 case X509_V_ERR_CERT_REVOKED
:
457 al
=SSL_AD_CERTIFICATE_REVOKED
;
459 case X509_V_ERR_OUT_OF_MEM
:
460 al
=SSL_AD_INTERNAL_ERROR
;
462 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT
:
463 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN
:
464 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY
:
465 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE
:
466 case X509_V_ERR_CERT_CHAIN_TOO_LONG
:
467 al
=SSL_AD_UNKNOWN_CA
;
469 case X509_V_ERR_APPLICATION_VERIFICATION
:
470 al
=SSL_AD_HANDSHAKE_FAILURE
;
473 al
=SSL_AD_CERTIFICATE_UNKNOWN
;
479 int ssl3_setup_buffers(SSL
*s
)
484 if (s
->s3
->rbuf
.buf
== NULL
)
486 if (s
->options
& SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER
)
487 extra
=SSL3_RT_MAX_EXTRA
;
490 if ((p
=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE
+extra
))
496 if (s
->s3
->wbuf
.buf
== NULL
)
498 if ((p
=(unsigned char *)Malloc(SSL3_RT_MAX_PACKET_SIZE
))
503 s
->packet
= &(s
->s3
->rbuf
.buf
[0]);
506 SSLerr(SSL_F_SSL3_SETUP_BUFFERS
,ERR_R_MALLOC_FAILURE
);