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.]
62 #include <openssl/bio.h>
63 #include <openssl/rand.h>
64 #include <openssl/objects.h>
65 #include <openssl/evp.h>
67 static SSL_METHOD
*ssl2_get_server_method(int ver
);
68 static int get_client_master_key(SSL
*s
);
69 static int get_client_hello(SSL
*s
);
70 static int server_hello(SSL
*s
);
71 static int get_client_finished(SSL
*s
);
72 static int server_verify(SSL
*s
);
73 static int server_finish(SSL
*s
);
74 static int request_certificate(SSL
*s
);
75 static int ssl_rsa_private_decrypt(CERT
*c
, int len
, unsigned char *from
,
76 unsigned char *to
,int padding
);
79 static SSL_METHOD
*ssl2_get_server_method(int ver
)
81 if (ver
== SSL2_VERSION
)
82 return(SSLv2_server_method());
87 SSL_METHOD
*SSLv2_server_method(void)
90 static SSL_METHOD SSLv2_server_data
;
94 memcpy((char *)&SSLv2_server_data
,(char *)sslv2_base_method(),
96 SSLv2_server_data
.ssl_accept
=ssl2_accept
;
97 SSLv2_server_data
.get_ssl_method
=ssl2_get_server_method
;
100 return(&SSLv2_server_data
);
103 int ssl2_accept(SSL
*s
)
105 unsigned long l
=time(NULL
);
112 RAND_add(&l
,sizeof(l
),0);
116 if (s
->info_callback
!= NULL
)
118 else if (s
->ctx
->info_callback
!= NULL
)
119 cb
=s
->ctx
->info_callback
;
121 /* init things to blank */
122 if (!SSL_in_init(s
) || SSL_in_before(s
)) SSL_clear(s
);
127 SSLerr(SSL_F_SSL2_ACCEPT
,SSL_R_NO_CERTIFICATE_SET
);
140 case SSL_ST_BEFORE
|SSL_ST_ACCEPT
:
141 case SSL_ST_OK
|SSL_ST_ACCEPT
:
144 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_START
,1);
146 s
->version
=SSL2_VERSION
;
147 s
->type
=SSL_ST_ACCEPT
;
150 if ((buf
== NULL
) && ((buf
=BUF_MEM_new()) == NULL
))
151 { ret
= -1; goto end
; }
152 if (!BUF_MEM_grow(buf
,(int)
153 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER
))
154 { ret
= -1; goto end
; }
157 s
->ctx
->stats
.sess_accept
++;
158 s
->handshake_func
=ssl2_accept
;
159 s
->state
=SSL2_ST_GET_CLIENT_HELLO_A
;
162 case SSL2_ST_GET_CLIENT_HELLO_A
:
163 case SSL2_ST_GET_CLIENT_HELLO_B
:
164 case SSL2_ST_GET_CLIENT_HELLO_C
:
166 ret
=get_client_hello(s
);
167 if (ret
<= 0) goto end
;
169 s
->state
=SSL2_ST_SEND_SERVER_HELLO_A
;
172 case SSL2_ST_SEND_SERVER_HELLO_A
:
173 case SSL2_ST_SEND_SERVER_HELLO_B
:
175 if (ret
<= 0) goto end
;
179 s
->state
=SSL2_ST_GET_CLIENT_MASTER_KEY_A
;
184 s
->state
=SSL2_ST_SERVER_START_ENCRYPTION
;
187 case SSL2_ST_GET_CLIENT_MASTER_KEY_A
:
188 case SSL2_ST_GET_CLIENT_MASTER_KEY_B
:
189 ret
=get_client_master_key(s
);
190 if (ret
<= 0) goto end
;
192 s
->state
=SSL2_ST_SERVER_START_ENCRYPTION
;
195 case SSL2_ST_SERVER_START_ENCRYPTION
:
196 /* Ok we how have sent all the stuff needed to
197 * start encrypting, the next packet back will
199 if (!ssl2_enc_init(s
,0))
200 { ret
= -1; goto end
; }
202 s
->state
=SSL2_ST_SEND_SERVER_VERIFY_A
;
205 case SSL2_ST_SEND_SERVER_VERIFY_A
:
206 case SSL2_ST_SEND_SERVER_VERIFY_B
:
207 ret
=server_verify(s
);
208 if (ret
<= 0) goto end
;
212 /* If we are in here, we have been
213 * buffering the output, so we need to
214 * flush it and remove buffering from
216 s
->state
=SSL2_ST_SEND_SERVER_VERIFY_C
;
221 s
->state
=SSL2_ST_GET_CLIENT_FINISHED_A
;
225 case SSL2_ST_SEND_SERVER_VERIFY_C
:
226 /* get the number of bytes to write */
227 num1
=BIO_ctrl(s
->wbio
,BIO_CTRL_INFO
,0,NULL
);
230 s
->rwstate
=SSL_WRITING
;
231 num1
=BIO_flush(s
->wbio
);
232 if (num1
<= 0) { ret
= -1; goto end
; }
233 s
->rwstate
=SSL_NOTHING
;
236 /* flushed and now remove buffering */
237 s
->wbio
=BIO_pop(s
->wbio
);
239 s
->state
=SSL2_ST_GET_CLIENT_FINISHED_A
;
242 case SSL2_ST_GET_CLIENT_FINISHED_A
:
243 case SSL2_ST_GET_CLIENT_FINISHED_B
:
244 ret
=get_client_finished(s
);
248 s
->state
=SSL2_ST_SEND_REQUEST_CERTIFICATE_A
;
251 case SSL2_ST_SEND_REQUEST_CERTIFICATE_A
:
252 case SSL2_ST_SEND_REQUEST_CERTIFICATE_B
:
253 case SSL2_ST_SEND_REQUEST_CERTIFICATE_C
:
254 case SSL2_ST_SEND_REQUEST_CERTIFICATE_D
:
255 /* don't do a 'request certificate' if we
256 * don't want to, or we already have one, and
257 * we only want to do it once. */
258 if (!(s
->verify_mode
& SSL_VERIFY_PEER
) ||
259 ((s
->session
->peer
!= NULL
) &&
260 (s
->verify_mode
& SSL_VERIFY_CLIENT_ONCE
)))
262 s
->state
=SSL2_ST_SEND_SERVER_FINISHED_A
;
267 ret
=request_certificate(s
);
268 if (ret
<= 0) goto end
;
270 s
->state
=SSL2_ST_SEND_SERVER_FINISHED_A
;
274 case SSL2_ST_SEND_SERVER_FINISHED_A
:
275 case SSL2_ST_SEND_SERVER_FINISHED_B
:
276 ret
=server_finish(s
);
277 if (ret
<= 0) goto end
;
283 BUF_MEM_free(s
->init_buf
);
284 ssl_free_wbio_buffer(s
);
287 /* ERR_clear_error();*/
289 ssl_update_cache(s
,SSL_SESS_CACHE_SERVER
);
291 s
->ctx
->stats
.sess_accept_good
++;
295 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_DONE
,1);
301 SSLerr(SSL_F_SSL2_ACCEPT
,SSL_R_UNKNOWN_STATE
);
307 if ((cb
!= NULL
) && (s
->state
!= state
))
311 cb(s
,SSL_CB_ACCEPT_LOOP
,1);
318 cb(s
,SSL_CB_ACCEPT_EXIT
,ret
);
322 static int get_client_master_key(SSL
*s
)
324 int is_export
,i
,n
,keya
,ek
;
330 p
=(unsigned char *)s
->init_buf
->data
;
331 if (s
->state
== SSL2_ST_GET_CLIENT_MASTER_KEY_A
)
333 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),10-s
->init_num
);
335 if (i
< (10-s
->init_num
))
336 return(ssl2_part_read(s
,SSL_F_GET_CLIENT_MASTER_KEY
,i
));
337 if (*(p
++) != SSL2_MT_CLIENT_MASTER_KEY
)
339 if (p
[-1] != SSL2_MT_ERROR
)
341 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
342 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,SSL_R_READ_WRONG_PACKET_TYPE
);
345 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,
350 cp
=ssl2_get_cipher_by_char(p
);
353 ssl2_return_error(s
,SSL2_PE_NO_CIPHER
);
354 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,
355 SSL_R_NO_CIPHER_MATCH
);
358 s
->session
->cipher
= cp
;
361 n2s(p
,i
); s
->s2
->tmp
.clear
=i
;
362 n2s(p
,i
); s
->s2
->tmp
.enc
=i
;
363 n2s(p
,i
); s
->session
->key_arg_length
=i
;
364 s
->state
=SSL2_ST_GET_CLIENT_MASTER_KEY_B
;
368 /* SSL2_ST_GET_CLIENT_MASTER_KEY_B */
369 p
=(unsigned char *)s
->init_buf
->data
;
370 keya
=s
->session
->key_arg_length
;
371 n
=s
->s2
->tmp
.clear
+s
->s2
->tmp
.enc
+keya
- s
->init_num
;
372 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),n
);
373 if (i
!= n
) return(ssl2_part_read(s
,SSL_F_GET_CLIENT_MASTER_KEY
,i
));
375 memcpy(s
->session
->key_arg
,&(p
[s
->s2
->tmp
.clear
+s
->s2
->tmp
.enc
]),
378 if (s
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].privatekey
== NULL
)
380 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
381 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,SSL_R_NO_PRIVATEKEY
);
384 i
=ssl_rsa_private_decrypt(s
->cert
,s
->s2
->tmp
.enc
,
385 &(p
[s
->s2
->tmp
.clear
]),&(p
[s
->s2
->tmp
.clear
]),
386 (s
->s2
->ssl2_rollback
)?RSA_SSLV23_PADDING
:RSA_PKCS1_PADDING
);
388 is_export
=SSL_C_IS_EXPORT(s
->session
->cipher
);
390 if (!ssl_cipher_get_evp(s
->session
,&c
,&md
,NULL
))
392 ssl2_return_error(s
,SSL2_PE_NO_CIPHER
);
393 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS
);
397 if (s
->session
->cipher
->algorithm2
& SSL2_CF_8_BYTE_ENC
)
407 /* If a bad decrypt, continue with protocol but with a
408 * dud master secret */
410 ((!is_export
&& (i
!= EVP_CIPHER_key_length(c
)))
411 || (is_export
&& ((i
!= ek
) || (s
->s2
->tmp
.clear
+i
!=
412 EVP_CIPHER_key_length(c
))))))
417 i
=EVP_CIPHER_key_length(c
);
418 RAND_pseudo_bytes(p
,i
);
424 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,SSL_R_BAD_RSA_DECRYPT
);
426 /* incorrect number of key bytes for non export cipher */
427 else if ((!is_export
&& (i
!= EVP_CIPHER_key_length(c
)))
428 || (is_export
&& ((i
!= ek
) || (s
->s2
->tmp
.clear
+i
!=
429 EVP_CIPHER_key_length(c
)))))
432 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,SSL_R_WRONG_NUMBER_OF_KEY_BITS
);
436 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
441 if (is_export
) i
+=s
->s2
->tmp
.clear
;
442 s
->session
->master_key_length
=i
;
443 memcpy(s
->session
->master_key
,p
,(unsigned int)i
);
447 static int get_client_hello(SSL
*s
)
451 STACK_OF(SSL_CIPHER
) *cs
; /* a stack of SSL_CIPHERS */
452 STACK_OF(SSL_CIPHER
) *cl
; /* the ones we want to use */
455 /* This is a bit of a hack to check for the correct packet
456 * type the first time round. */
457 if (s
->state
== SSL2_ST_GET_CLIENT_HELLO_A
)
460 s
->state
=SSL2_ST_GET_CLIENT_HELLO_B
;
463 p
=(unsigned char *)s
->init_buf
->data
;
464 if (s
->state
== SSL2_ST_GET_CLIENT_HELLO_B
)
466 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),9-s
->init_num
);
467 if (i
< (9-s
->init_num
))
468 return(ssl2_part_read(s
,SSL_F_GET_CLIENT_HELLO
,i
));
470 if (*(p
++) != SSL2_MT_CLIENT_HELLO
)
472 if (p
[-1] != SSL2_MT_ERROR
)
474 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
475 SSLerr(SSL_F_GET_CLIENT_HELLO
,SSL_R_READ_WRONG_PACKET_TYPE
);
478 SSLerr(SSL_F_GET_CLIENT_HELLO
,SSL_R_PEER_ERROR
);
482 if (i
< s
->version
) s
->version
=i
;
483 n2s(p
,i
); s
->s2
->tmp
.cipher_spec_length
=i
;
484 n2s(p
,i
); s
->s2
->tmp
.session_id_length
=i
;
485 n2s(p
,i
); s
->s2
->challenge_length
=i
;
486 if ( (i
< SSL2_MIN_CHALLENGE_LENGTH
) ||
487 (i
> SSL2_MAX_CHALLENGE_LENGTH
))
489 SSLerr(SSL_F_GET_CLIENT_HELLO
,SSL_R_INVALID_CHALLENGE_LENGTH
);
492 s
->state
=SSL2_ST_GET_CLIENT_HELLO_C
;
496 /* SSL2_ST_GET_CLIENT_HELLO_C */
497 p
=(unsigned char *)s
->init_buf
->data
;
498 n
=s
->s2
->tmp
.cipher_spec_length
+s
->s2
->challenge_length
+
499 s
->s2
->tmp
.session_id_length
-s
->init_num
;
500 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),n
);
501 if (i
!= n
) return(ssl2_part_read(s
,SSL_F_GET_CLIENT_HELLO
,i
));
503 /* get session-id before cipher stuff so we can get out session
504 * structure if it is cached */
506 if ((s
->s2
->tmp
.session_id_length
!= 0) &&
507 (s
->s2
->tmp
.session_id_length
!= SSL2_SSL_SESSION_ID_LENGTH
))
509 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
510 SSLerr(SSL_F_GET_CLIENT_HELLO
,SSL_R_BAD_SSL_SESSION_ID_LENGTH
);
514 if (s
->s2
->tmp
.session_id_length
== 0)
516 if (!ssl_get_new_session(s
,1))
518 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
524 i
=ssl_get_prev_session(s
,&(p
[s
->s2
->tmp
.cipher_spec_length
]),
525 s
->s2
->tmp
.session_id_length
);
527 { /* previous session */
532 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
539 ssl2_return_error(s
,SSL2_PE_NO_CERTIFICATE
);
540 SSLerr(SSL_F_GET_CLIENT_HELLO
,SSL_R_NO_CERTIFICATE_SET
);
544 if (!ssl_get_new_session(s
,1))
546 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
554 cs
=ssl_bytes_to_cipher_list(s
,p
,s
->s2
->tmp
.cipher_spec_length
,
555 &s
->session
->ciphers
);
556 if (cs
== NULL
) goto mem_err
;
558 cl
=ssl_get_ciphers_by_id(s
);
560 for (z
=0; z
<sk_SSL_CIPHER_num(cs
); z
++)
562 if (sk_SSL_CIPHER_find(cl
,sk_SSL_CIPHER_value(cs
,z
)) < 0)
564 sk_SSL_CIPHER_delete(cs
,z
);
569 /* s->session->ciphers should now have a list of
570 * ciphers that are on both the client and server.
571 * This list is ordered by the order the client sent
575 p
+=s
->s2
->tmp
.cipher_spec_length
;
576 /* done cipher selection */
578 /* session id extracted already */
579 p
+=s
->s2
->tmp
.session_id_length
;
582 memcpy(s
->s2
->challenge
,p
,(unsigned int)s
->s2
->challenge_length
);
585 SSLerr(SSL_F_GET_CLIENT_HELLO
,ERR_R_MALLOC_FAILURE
);
589 static int server_hello(SSL
*s
)
593 STACK_OF(SSL_CIPHER
) *sk
;
595 p
=(unsigned char *)s
->init_buf
->data
;
596 if (s
->state
== SSL2_ST_SEND_SERVER_HELLO_A
)
599 *(p
++)=SSL2_MT_SERVER_HELLO
; /* type */
601 *(p
++)=(unsigned char)hit
;
605 if (s
->session
->sess_cert
!= NULL
)
606 /* This can't really happen because get_client_hello
607 * has called ssl_get_new_session, which does not set
609 ssl_sess_cert_free(s
->session
->sess_cert
);
610 s
->session
->sess_cert
= ssl_sess_cert_new();
611 if (s
->session
->sess_cert
== NULL
)
613 SSLerr(SSL_F_SERVER_HELLO
, ERR_R_MALLOC_FAILURE
);
617 /* If 'hit' is set, then s->sess_cert may be non-NULL or NULL,
618 * depending on whether it survived in the internal cache
619 * or was retrieved from an external cache.
620 * If it is NULL, we cannot put any useful data in it anyway,
621 * so we don't touch it.
624 #else /* That's what used to be done when cert_st and sess_cert_st were
627 { /* else add cert to session */
628 CRYPTO_add(&s
->cert
->references
,1,CRYPTO_LOCK_SSL_CERT
);
629 if (s
->session
->sess_cert
!= NULL
)
630 ssl_cert_free(s
->session
->sess_cert
);
631 s
->session
->sess_cert
=s
->cert
;
633 else /* We have a session id-cache hit, if the
634 * session-id has no certificate listed against
635 * the 'cert' structure, grab the 'old' one
636 * listed against the SSL connection */
638 if (s
->session
->sess_cert
== NULL
)
640 CRYPTO_add(&s
->cert
->references
,1,
641 CRYPTO_LOCK_SSL_CERT
);
642 s
->session
->sess_cert
=s
->cert
;
649 ssl2_return_error(s
,SSL2_PE_NO_CERTIFICATE
);
650 SSLerr(SSL_F_SERVER_HELLO
,SSL_R_NO_CERTIFICATE_SPECIFIED
);
656 *(p
++)=0; /* no certificate type */
657 s2n(s
->version
,p
); /* version */
658 s2n(0,p
); /* cert len */
659 s2n(0,p
); /* ciphers len */
664 /* put certificate type */
665 *(p
++)=SSL2_CT_X509_CERTIFICATE
;
666 s2n(s
->version
,p
); /* version */
667 n
=i2d_X509(s
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].x509
,NULL
);
668 s2n(n
,p
); /* certificate length */
669 i2d_X509(s
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].x509
,&d
);
672 /* lets send out the ciphers we like in the
674 sk
= s
->session
->ciphers
;
675 n
=ssl_cipher_list_to_bytes(s
,s
->session
->ciphers
,d
);
677 s2n(n
,p
); /* add cipher length */
680 /* make and send conn_id */
681 s2n(SSL2_CONNECTION_ID_LENGTH
,p
); /* add conn_id length */
682 s
->s2
->conn_id_length
=SSL2_CONNECTION_ID_LENGTH
;
683 RAND_pseudo_bytes(s
->s2
->conn_id
,(int)s
->s2
->conn_id_length
);
684 memcpy(d
,s
->s2
->conn_id
,SSL2_CONNECTION_ID_LENGTH
);
685 d
+=SSL2_CONNECTION_ID_LENGTH
;
687 s
->state
=SSL2_ST_SEND_SERVER_HELLO_B
;
688 s
->init_num
=d
-(unsigned char *)s
->init_buf
->data
;
691 /* SSL2_ST_SEND_SERVER_HELLO_B */
692 /* If we are using TCP/IP, the performance is bad if we do 2
693 * writes without a read between them. This occurs when
694 * Session-id reuse is used, so I will put in a buffering module
698 if (!ssl_init_wbio_buffer(s
,1)) return(-1);
701 return(ssl2_do_write(s
));
704 static int get_client_finished(SSL
*s
)
709 p
=(unsigned char *)s
->init_buf
->data
;
710 if (s
->state
== SSL2_ST_GET_CLIENT_FINISHED_A
)
712 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),1-s
->init_num
);
713 if (i
< 1-s
->init_num
)
714 return(ssl2_part_read(s
,SSL_F_GET_CLIENT_FINISHED
,i
));
716 if (*p
!= SSL2_MT_CLIENT_FINISHED
)
718 if (*p
!= SSL2_MT_ERROR
)
720 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
721 SSLerr(SSL_F_GET_CLIENT_FINISHED
,SSL_R_READ_WRONG_PACKET_TYPE
);
724 SSLerr(SSL_F_GET_CLIENT_FINISHED
,SSL_R_PEER_ERROR
);
728 s
->state
=SSL2_ST_GET_CLIENT_FINISHED_B
;
731 /* SSL2_ST_GET_CLIENT_FINISHED_B */
732 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),s
->s2
->conn_id_length
-s
->init_num
);
733 if (i
< (int)s
->s2
->conn_id_length
-s
->init_num
)
735 return(ssl2_part_read(s
,SSL_F_GET_CLIENT_FINISHED
,i
));
737 if (memcmp(p
,s
->s2
->conn_id
,(unsigned int)s
->s2
->conn_id_length
) != 0)
739 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
740 SSLerr(SSL_F_GET_CLIENT_FINISHED
,SSL_R_CONNECTION_ID_IS_DIFFERENT
);
746 static int server_verify(SSL
*s
)
750 if (s
->state
== SSL2_ST_SEND_SERVER_VERIFY_A
)
752 p
=(unsigned char *)s
->init_buf
->data
;
753 *(p
++)=SSL2_MT_SERVER_VERIFY
;
754 memcpy(p
,s
->s2
->challenge
,(unsigned int)s
->s2
->challenge_length
);
755 /* p+=s->s2->challenge_length; */
757 s
->state
=SSL2_ST_SEND_SERVER_VERIFY_B
;
758 s
->init_num
=s
->s2
->challenge_length
+1;
761 return(ssl2_do_write(s
));
764 static int server_finish(SSL
*s
)
768 if (s
->state
== SSL2_ST_SEND_SERVER_FINISHED_A
)
770 p
=(unsigned char *)s
->init_buf
->data
;
771 *(p
++)=SSL2_MT_SERVER_FINISHED
;
773 memcpy(p
,s
->session
->session_id
,
774 (unsigned int)s
->session
->session_id_length
);
775 /* p+=s->session->session_id_length; */
777 s
->state
=SSL2_ST_SEND_SERVER_FINISHED_B
;
778 s
->init_num
=s
->session
->session_id_length
+1;
782 /* SSL2_ST_SEND_SERVER_FINISHED_B */
783 return(ssl2_do_write(s
));
786 /* send the request and check the response */
787 static int request_certificate(SSL
*s
)
789 unsigned char *p
,*p2
,*buf2
;
791 int i
,j
,ctype
,ret
= -1;
793 STACK_OF(X509
) *sk
=NULL
;
796 if (s
->state
== SSL2_ST_SEND_REQUEST_CERTIFICATE_A
)
798 p
=(unsigned char *)s
->init_buf
->data
;
799 *(p
++)=SSL2_MT_REQUEST_CERTIFICATE
;
800 *(p
++)=SSL2_AT_MD5_WITH_RSA_ENCRYPTION
;
801 RAND_pseudo_bytes(ccd
,SSL2_MIN_CERT_CHALLENGE_LENGTH
);
802 memcpy(p
,ccd
,SSL2_MIN_CERT_CHALLENGE_LENGTH
);
804 s
->state
=SSL2_ST_SEND_REQUEST_CERTIFICATE_B
;
805 s
->init_num
=SSL2_MIN_CERT_CHALLENGE_LENGTH
+2;
809 if (s
->state
== SSL2_ST_SEND_REQUEST_CERTIFICATE_B
)
819 s
->state
=SSL2_ST_SEND_REQUEST_CERTIFICATE_C
;
822 if (s
->state
== SSL2_ST_SEND_REQUEST_CERTIFICATE_C
)
824 p
=(unsigned char *)s
->init_buf
->data
;
825 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),6-s
->init_num
);
828 ret
=ssl2_part_read(s
,SSL_F_REQUEST_CERTIFICATE
,i
);
832 if ((*p
== SSL2_MT_ERROR
) && (i
>= 3))
835 if (s
->verify_mode
& SSL_VERIFY_FAIL_IF_NO_PEER_CERT
)
837 ssl2_return_error(s
,SSL2_PE_BAD_CERTIFICATE
);
838 SSLerr(SSL_F_REQUEST_CERTIFICATE
,SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE
);
844 if ((*(p
++) != SSL2_MT_CLIENT_CERTIFICATE
) || (i
< 6))
846 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
847 SSLerr(SSL_F_REQUEST_CERTIFICATE
,SSL_R_SHORT_READ
);
850 /* ok we have a response */
851 /* certificate type, there is only one right now. */
853 if (ctype
!= SSL2_AT_MD5_WITH_RSA_ENCRYPTION
)
855 ssl2_return_error(s
,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE
);
856 SSLerr(SSL_F_REQUEST_CERTIFICATE
,SSL_R_BAD_RESPONSE_ARGUMENT
);
859 n2s(p
,i
); s
->s2
->tmp
.clen
=i
;
860 n2s(p
,i
); s
->s2
->tmp
.rlen
=i
;
861 s
->state
=SSL2_ST_SEND_REQUEST_CERTIFICATE_D
;
865 /* SSL2_ST_SEND_REQUEST_CERTIFICATE_D */
866 p
=(unsigned char *)s
->init_buf
->data
;
867 j
=s
->s2
->tmp
.clen
+s
->s2
->tmp
.rlen
-s
->init_num
;
868 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),j
);
871 ret
=ssl2_part_read(s
,SSL_F_REQUEST_CERTIFICATE
,i
);
875 x509
=(X509
*)d2i_X509(NULL
,&p
,(long)s
->s2
->tmp
.clen
);
878 SSLerr(SSL_F_REQUEST_CERTIFICATE
,ERR_R_X509_LIB
);
882 if (((sk
=sk_X509_new_null()) == NULL
) || (!sk_X509_push(sk
,x509
)))
884 SSLerr(SSL_F_REQUEST_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
888 i
=ssl_verify_cert_chain(s
,sk
);
890 if (i
) /* we like the packet, now check the chksum */
895 EVP_VerifyInit(&ctx
,s
->ctx
->rsa_md5
);
896 EVP_VerifyUpdate(&ctx
,s
->s2
->key_material
,
897 (unsigned int)s
->s2
->key_material_length
);
898 EVP_VerifyUpdate(&ctx
,ccd
,SSL2_MIN_CERT_CHALLENGE_LENGTH
);
900 i
=i2d_X509(s
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].x509
,NULL
);
901 buf2
=OPENSSL_malloc((unsigned int)i
);
904 SSLerr(SSL_F_REQUEST_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
908 i
=i2d_X509(s
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].x509
,&p2
);
909 EVP_VerifyUpdate(&ctx
,buf2
,(unsigned int)i
);
912 pkey
=X509_get_pubkey(x509
);
913 if (pkey
== NULL
) goto end
;
914 i
=EVP_VerifyFinal(&ctx
,p
,s
->s2
->tmp
.rlen
,pkey
);
916 memset(&ctx
,0,sizeof(ctx
));
920 if (s
->session
->peer
!= NULL
)
921 X509_free(s
->session
->peer
);
922 s
->session
->peer
=x509
;
923 CRYPTO_add(&x509
->references
,1,CRYPTO_LOCK_X509
);
924 s
->session
->verify_result
= s
->verify_result
;
930 SSLerr(SSL_F_REQUEST_CERTIFICATE
,SSL_R_BAD_CHECKSUM
);
937 ssl2_return_error(s
,SSL2_PE_BAD_CERTIFICATE
);
945 static int ssl_rsa_private_decrypt(CERT
*c
, int len
, unsigned char *from
,
946 unsigned char *to
, int padding
)
951 if ((c
== NULL
) || (c
->pkeys
[SSL_PKEY_RSA_ENC
].privatekey
== NULL
))
953 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT
,SSL_R_NO_PRIVATEKEY
);
956 if (c
->pkeys
[SSL_PKEY_RSA_ENC
].privatekey
->type
!= EVP_PKEY_RSA
)
958 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT
,SSL_R_PUBLIC_KEY_IS_NOT_RSA
);
961 rsa
=c
->pkeys
[SSL_PKEY_RSA_ENC
].privatekey
->pkey
.rsa
;
963 /* we have the public key */
964 i
=RSA_private_decrypt(len
,from
,to
,rsa
,padding
);
966 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT
,ERR_R_RSA_LIB
);
972 static void *dummy
=&dummy
;