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.]
60 #include <openssl/buffer.h>
61 #include <openssl/rand.h>
62 #include <openssl/objects.h>
63 #include <openssl/md5.h>
64 #include <openssl/sha.h>
65 #include <openssl/evp.h>
68 #ifndef OPENSSL_NO_KRB5
72 static SSL_METHOD *ssl3_get_client_method(int ver);
73 static int ssl3_client_hello(SSL *s);
74 static int ssl3_get_server_hello(SSL *s);
75 static int ssl3_get_certificate_request(SSL *s);
76 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
77 static int ssl3_get_server_done(SSL *s);
78 static int ssl3_send_client_verify(SSL *s);
79 static int ssl3_send_client_certificate(SSL *s);
80 static int ssl3_send_client_key_exchange(SSL *s);
81 static int ssl3_get_key_exchange(SSL *s);
82 static int ssl3_get_server_certificate(SSL *s);
83 static int ssl3_check_cert_and_algorithm(SSL *s);
84 static SSL_METHOD *ssl3_get_client_method(int ver)
86 if (ver == SSL3_VERSION)
87 return(SSLv3_client_method());
92 SSL_METHOD *SSLv3_client_method(void)
95 static SSL_METHOD SSLv3_client_data;
100 memcpy((char *)&SSLv3_client_data,(char *)sslv3_base_method(),
102 SSLv3_client_data.ssl_connect=ssl3_connect;
103 SSLv3_client_data.get_ssl_method=ssl3_get_client_method;
105 return(&SSLv3_client_data);
108 int ssl3_connect(SSL *s)
111 unsigned long Time=time(NULL),l;
115 int new_state,state,skip=0;;
117 RAND_add(&Time,sizeof(Time),0);
121 if (s->info_callback != NULL)
123 else if (s->ctx->info_callback != NULL)
124 cb=s->ctx->info_callback;
126 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
135 case SSL_ST_RENEGOTIATE:
137 s->state=SSL_ST_CONNECT;
138 s->ctx->stats.sess_connect_renegotiate++;
142 case SSL_ST_BEFORE|SSL_ST_CONNECT:
143 case SSL_ST_OK|SSL_ST_CONNECT:
146 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
148 if ((s->version & 0xff00 ) != 0x0300)
150 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
155 /* s->version=SSL3_VERSION; */
156 s->type=SSL_ST_CONNECT;
158 if (s->init_buf == NULL)
160 if ((buf=BUF_MEM_new()) == NULL)
165 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
173 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
175 /* setup buffing BIO */
176 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
178 /* don't push the buffering BIO quite yet */
180 ssl3_init_finished_mac(s);
182 s->state=SSL3_ST_CW_CLNT_HELLO_A;
183 s->ctx->stats.sess_connect++;
187 case SSL3_ST_CW_CLNT_HELLO_A:
188 case SSL3_ST_CW_CLNT_HELLO_B:
191 ret=ssl3_client_hello(s);
192 if (ret <= 0) goto end;
193 s->state=SSL3_ST_CR_SRVR_HELLO_A;
196 /* turn on buffering for the next lot of output */
197 if (s->bbio != s->wbio)
198 s->wbio=BIO_push(s->bbio,s->wbio);
202 case SSL3_ST_CR_SRVR_HELLO_A:
203 case SSL3_ST_CR_SRVR_HELLO_B:
204 ret=ssl3_get_server_hello(s);
205 if (ret <= 0) goto end;
207 s->state=SSL3_ST_CR_FINISHED_A;
209 s->state=SSL3_ST_CR_CERT_A;
213 case SSL3_ST_CR_CERT_A:
214 case SSL3_ST_CR_CERT_B:
215 /* Check if it is anon DH */
216 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
218 ret=ssl3_get_server_certificate(s);
219 if (ret <= 0) goto end;
223 s->state=SSL3_ST_CR_KEY_EXCH_A;
227 case SSL3_ST_CR_KEY_EXCH_A:
228 case SSL3_ST_CR_KEY_EXCH_B:
229 ret=ssl3_get_key_exchange(s);
230 if (ret <= 0) goto end;
231 s->state=SSL3_ST_CR_CERT_REQ_A;
234 /* at this point we check that we have the
235 * required stuff from the server */
236 if (!ssl3_check_cert_and_algorithm(s))
243 case SSL3_ST_CR_CERT_REQ_A:
244 case SSL3_ST_CR_CERT_REQ_B:
245 ret=ssl3_get_certificate_request(s);
246 if (ret <= 0) goto end;
247 s->state=SSL3_ST_CR_SRVR_DONE_A;
251 case SSL3_ST_CR_SRVR_DONE_A:
252 case SSL3_ST_CR_SRVR_DONE_B:
253 ret=ssl3_get_server_done(s);
254 if (ret <= 0) goto end;
255 if (s->s3->tmp.cert_req)
256 s->state=SSL3_ST_CW_CERT_A;
258 s->state=SSL3_ST_CW_KEY_EXCH_A;
263 case SSL3_ST_CW_CERT_A:
264 case SSL3_ST_CW_CERT_B:
265 case SSL3_ST_CW_CERT_C:
266 case SSL3_ST_CW_CERT_D:
267 ret=ssl3_send_client_certificate(s);
268 if (ret <= 0) goto end;
269 s->state=SSL3_ST_CW_KEY_EXCH_A;
273 case SSL3_ST_CW_KEY_EXCH_A:
274 case SSL3_ST_CW_KEY_EXCH_B:
275 ret=ssl3_send_client_key_exchange(s);
276 if (ret <= 0) goto end;
277 l=s->s3->tmp.new_cipher->algorithms;
278 /* EAY EAY EAY need to check for DH fix cert
280 /* For TLS, cert_req is set to 2, so a cert chain
281 * of nothing is sent, but no verify packet is sent */
282 if (s->s3->tmp.cert_req == 1)
284 s->state=SSL3_ST_CW_CERT_VRFY_A;
288 s->state=SSL3_ST_CW_CHANGE_A;
289 s->s3->change_cipher_spec=0;
295 case SSL3_ST_CW_CERT_VRFY_A:
296 case SSL3_ST_CW_CERT_VRFY_B:
297 ret=ssl3_send_client_verify(s);
298 if (ret <= 0) goto end;
299 s->state=SSL3_ST_CW_CHANGE_A;
301 s->s3->change_cipher_spec=0;
304 case SSL3_ST_CW_CHANGE_A:
305 case SSL3_ST_CW_CHANGE_B:
306 ret=ssl3_send_change_cipher_spec(s,
307 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
308 if (ret <= 0) goto end;
309 s->state=SSL3_ST_CW_FINISHED_A;
312 s->session->cipher=s->s3->tmp.new_cipher;
313 if (s->s3->tmp.new_compression == NULL)
314 s->session->compress_meth=0;
316 s->session->compress_meth=
317 s->s3->tmp.new_compression->id;
318 if (!s->method->ssl3_enc->setup_key_block(s))
324 if (!s->method->ssl3_enc->change_cipher_state(s,
325 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
333 case SSL3_ST_CW_FINISHED_A:
334 case SSL3_ST_CW_FINISHED_B:
335 ret=ssl3_send_finished(s,
336 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
337 s->method->ssl3_enc->client_finished_label,
338 s->method->ssl3_enc->client_finished_label_len);
339 if (ret <= 0) goto end;
340 s->state=SSL3_ST_CW_FLUSH;
343 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
346 s->s3->tmp.next_state=SSL_ST_OK;
347 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
350 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
351 s->s3->delay_buf_pop_ret=0;
356 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
361 case SSL3_ST_CR_FINISHED_A:
362 case SSL3_ST_CR_FINISHED_B:
364 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
365 SSL3_ST_CR_FINISHED_B);
366 if (ret <= 0) goto end;
369 s->state=SSL3_ST_CW_CHANGE_A;
375 case SSL3_ST_CW_FLUSH:
376 /* number of bytes to be flushed */
377 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
380 s->rwstate=SSL_WRITING;
381 num1=BIO_flush(s->wbio);
382 if (num1 <= 0) { ret= -1; goto end; }
383 s->rwstate=SSL_NOTHING;
386 s->state=s->s3->tmp.next_state;
390 /* clean a few things up */
391 ssl3_cleanup_key_block(s);
393 if (s->init_buf != NULL)
395 BUF_MEM_free(s->init_buf);
399 /* If we are not 'joining' the last two packets,
400 * remove the buffering now */
401 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
402 ssl_free_wbio_buffer(s);
403 /* else do it later in ssl3_write */
408 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
409 if (s->hit) s->ctx->stats.sess_hit++;
413 s->handshake_func=ssl3_connect;
414 s->ctx->stats.sess_connect_good++;
416 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
422 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
428 /* did we do anything */
429 if (!s->s3->tmp.reuse_message && !skip)
433 if ((ret=BIO_flush(s->wbio)) <= 0)
437 if ((cb != NULL) && (s->state != state))
441 cb(s,SSL_CB_CONNECT_LOOP,1);
449 cb(s,SSL_CB_CONNECT_EXIT,ret);
455 static int ssl3_client_hello(SSL *s)
460 unsigned long Time,l;
463 buf=(unsigned char *)s->init_buf->data;
464 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
466 if ((s->session == NULL) ||
467 (s->session->ssl_version != s->version) ||
468 (s->session->not_resumable))
470 if (!ssl_get_new_session(s,0))
473 /* else use the pre-loaded session */
475 p=s->s3->client_random;
476 Time=time(NULL); /* Time */
478 RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time));
480 /* Do the message type and length last */
483 *(p++)=s->version>>8;
484 *(p++)=s->version&0xff;
485 s->client_version=s->version;
488 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
495 i=s->session->session_id_length;
499 memcpy(p,s->session->session_id,i);
503 /* Ciphers supported */
504 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]));
507 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
514 if (s->ctx->comp_methods == NULL)
517 j=sk_SSL_COMP_num(s->ctx->comp_methods);
521 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
524 *(p++)=0; /* Add the NULL method */
528 *(d++)=SSL3_MT_CLIENT_HELLO;
531 s->state=SSL3_ST_CW_CLNT_HELLO_B;
532 /* number of bytes to write */
537 /* SSL3_ST_CW_CLNT_HELLO_B */
538 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
543 static int ssl3_get_server_hello(SSL *s)
545 STACK_OF(SSL_CIPHER) *sk;
553 n=ssl3_get_message(s,
554 SSL3_ST_CR_SRVR_HELLO_A,
555 SSL3_ST_CR_SRVR_HELLO_B,
556 SSL3_MT_SERVER_HELLO,
560 if (!ok) return((int)n);
561 d=p=(unsigned char *)s->init_buf->data;
563 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
565 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
566 s->version=(s->version&0xff00)|p[1];
567 al=SSL_AD_PROTOCOL_VERSION;
572 /* load the server hello data */
573 /* load the server random */
574 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
577 /* get the session-id */
580 if ((j != 0) && (j != SSL3_SESSION_ID_SIZE))
582 /* SSLref returns 16 :-( */
583 if (j < SSL2_SSL_SESSION_ID_LENGTH)
585 al=SSL_AD_ILLEGAL_PARAMETER;
586 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_SHORT);
590 if (j != 0 && j == s->session->session_id_length
591 && memcmp(p,s->session->session_id,j) == 0)
593 if(s->sid_ctx_length != s->session->sid_ctx_length
594 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
596 al=SSL_AD_ILLEGAL_PARAMETER;
597 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
602 else /* a miss or crap from the other end */
604 /* If we were trying for session-id reuse, make a new
605 * SSL_SESSION so we don't stuff up other people */
607 if (s->session->session_id_length > 0)
609 if (!ssl_get_new_session(s,0))
611 al=SSL_AD_INTERNAL_ERROR;
615 s->session->session_id_length=j;
616 memcpy(s->session->session_id,p,j); /* j could be 0 */
619 c=ssl_get_cipher_by_char(s,p);
623 al=SSL_AD_ILLEGAL_PARAMETER;
624 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
627 p+=ssl_put_cipher_by_char(s,NULL,NULL);
629 sk=ssl_get_ciphers_by_id(s);
630 i=sk_SSL_CIPHER_find(sk,c);
633 /* we did not say we would use this cipher */
634 al=SSL_AD_ILLEGAL_PARAMETER;
635 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
639 if (s->hit && (s->session->cipher != c))
642 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
644 al=SSL_AD_ILLEGAL_PARAMETER;
645 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
649 s->s3->tmp.new_cipher=c;
651 /* lets get the compression algorithm */
657 comp=ssl3_comp_find(s->ctx->comp_methods,j);
659 if ((j != 0) && (comp == NULL))
661 al=SSL_AD_ILLEGAL_PARAMETER;
662 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
667 s->s3->tmp.new_compression=comp;
672 /* wrong packet length */
673 al=SSL_AD_DECODE_ERROR;
674 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
680 ssl3_send_alert(s,SSL3_AL_FATAL,al);
685 static int ssl3_get_server_certificate(SSL *s)
688 unsigned long n,nc,llen,l;
690 unsigned char *p,*d,*q;
691 STACK_OF(X509) *sk=NULL;
694 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
696 n=ssl3_get_message(s,
700 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32)
701 1024*30, /* 30k max cert list :-) */
703 1024*100, /* 100k max cert list :-) */
707 if (!ok) return((int)n);
709 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
711 s->s3->tmp.reuse_message=1;
715 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
717 al=SSL_AD_UNEXPECTED_MESSAGE;
718 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
721 d=p=(unsigned char *)s->init_buf->data;
723 if ((sk=sk_X509_new_null()) == NULL)
725 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
732 al=SSL_AD_DECODE_ERROR;
733 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
736 for (nc=0; nc<llen; )
741 al=SSL_AD_DECODE_ERROR;
742 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
747 x=d2i_X509(NULL,&q,l);
750 al=SSL_AD_BAD_CERTIFICATE;
751 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
756 al=SSL_AD_DECODE_ERROR;
757 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
760 if (!sk_X509_push(sk,x))
762 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
770 i=ssl_verify_cert_chain(s,sk);
771 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i))
773 al=ssl_verify_alarm_type(s->verify_result);
774 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
777 ERR_clear_error(); /* but we keep s->verify_result */
779 sc=ssl_sess_cert_new();
780 if (sc == NULL) goto err;
782 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
783 s->session->sess_cert=sc;
786 /* Inconsistency alert: cert_chain does include the peer's
787 * certificate, which we don't include in s3_srvr.c */
788 x=sk_X509_value(sk,0);
790 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end */
792 pkey=X509_get_pubkey(x);
794 /* VRS: allow null cert if auth == KRB5 */
796 ((s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
797 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
800 printf("pkey,x = %p, %p\n", pkey,x);
801 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
802 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
803 s->s3->tmp.new_cipher->algorithms, need_cert);
804 #endif /* KSSL_DEBUG */
806 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
810 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
814 i=ssl_cert_type(x,pkey);
815 if (need_cert && i < 0)
819 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_UNKNOWN_CERTIFICATE_TYPE);
825 sc->peer_cert_type=i;
826 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
827 /* Why would the following ever happen?
828 * We just created sc a couple of lines ago. */
829 if (sc->peer_pkeys[i].x509 != NULL)
830 X509_free(sc->peer_pkeys[i].x509);
831 sc->peer_pkeys[i].x509=x;
832 sc->peer_key= &(sc->peer_pkeys[i]);
834 if (s->session->peer != NULL)
835 X509_free(s->session->peer);
836 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
841 sc->peer_cert_type=i;
844 if (s->session->peer != NULL)
845 X509_free(s->session->peer);
846 s->session->peer=NULL;
848 s->session->verify_result = s->verify_result;
856 ssl3_send_alert(s,SSL3_AL_FATAL,al);
861 sk_X509_pop_free(sk,X509_free);
865 static int ssl3_get_key_exchange(SSL *s)
867 #ifndef OPENSSL_NO_RSA
868 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
871 unsigned char *param,*p;
872 int al,i,j,param_len,ok;
875 #ifndef OPENSSL_NO_RSA
878 #ifndef OPENSSL_NO_DH
882 n=ssl3_get_message(s,
883 SSL3_ST_CR_KEY_EXCH_A,
884 SSL3_ST_CR_KEY_EXCH_B,
889 if (!ok) return((int)n);
891 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
893 s->s3->tmp.reuse_message=1;
897 param=p=(unsigned char *)s->init_buf->data;
899 if (s->session->sess_cert != NULL)
901 #ifndef OPENSSL_NO_RSA
902 if (s->session->sess_cert->peer_rsa_tmp != NULL)
904 RSA_free(s->session->sess_cert->peer_rsa_tmp);
905 s->session->sess_cert->peer_rsa_tmp=NULL;
908 #ifndef OPENSSL_NO_DH
909 if (s->session->sess_cert->peer_dh_tmp)
911 DH_free(s->session->sess_cert->peer_dh_tmp);
912 s->session->sess_cert->peer_dh_tmp=NULL;
918 s->session->sess_cert=ssl_sess_cert_new();
922 alg=s->s3->tmp.new_cipher->algorithms;
924 #ifndef OPENSSL_NO_RSA
927 if ((rsa=RSA_new()) == NULL)
929 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
936 al=SSL_AD_DECODE_ERROR;
937 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
940 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
942 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
951 al=SSL_AD_DECODE_ERROR;
952 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
955 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
957 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
963 /* this should be because we are using an export cipher */
965 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
968 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
971 s->session->sess_cert->peer_rsa_tmp=rsa;
974 #else /* OPENSSL_NO_RSA */
978 #ifndef OPENSSL_NO_DH
979 else if (alg & SSL_kEDH)
981 if ((dh=DH_new()) == NULL)
983 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
990 al=SSL_AD_DECODE_ERROR;
991 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
994 if (!(dh->p=BN_bin2bn(p,i,NULL)))
996 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1005 al=SSL_AD_DECODE_ERROR;
1006 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1009 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1011 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1020 al=SSL_AD_DECODE_ERROR;
1021 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1024 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1026 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1032 #ifndef OPENSSL_NO_RSA
1034 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1039 #ifndef OPENSSL_NO_DSA
1040 else if (alg & SSL_aDSS)
1041 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1043 /* else anonymous DH, so no certificate or pkey. */
1045 s->session->sess_cert->peer_dh_tmp=dh;
1048 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1050 al=SSL_AD_ILLEGAL_PARAMETER;
1051 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1054 #endif /* !OPENSSL_NO_DH */
1057 al=SSL_AD_HANDSHAKE_FAILURE;
1058 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1063 /* p points to the next byte, there are 'n' bytes left */
1066 /* if it was signed, check the signature */
1071 j=EVP_PKEY_size(pkey);
1073 if ((i != n) || (n > j) || (n <= 0))
1075 /* wrong packet length */
1076 al=SSL_AD_DECODE_ERROR;
1077 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1081 #ifndef OPENSSL_NO_RSA
1082 if (pkey->type == EVP_PKEY_RSA)
1088 for (num=2; num > 0; num--)
1090 EVP_DigestInit(&md_ctx,(num == 2)
1091 ?s->ctx->md5:s->ctx->sha1);
1092 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1093 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1094 EVP_DigestUpdate(&md_ctx,param,param_len);
1095 EVP_DigestFinal(&md_ctx,q,(unsigned int *)&i);
1099 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1103 al=SSL_AD_DECRYPT_ERROR;
1104 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1110 al=SSL_AD_DECRYPT_ERROR;
1111 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1117 #ifndef OPENSSL_NO_DSA
1118 if (pkey->type == EVP_PKEY_DSA)
1121 EVP_VerifyInit(&md_ctx,EVP_dss1());
1122 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1123 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1124 EVP_VerifyUpdate(&md_ctx,param,param_len);
1125 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1128 al=SSL_AD_DECRYPT_ERROR;
1129 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1136 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1142 /* still data left over */
1143 if (!(alg & SSL_aNULL))
1145 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1150 al=SSL_AD_DECODE_ERROR;
1151 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1155 EVP_PKEY_free(pkey);
1158 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1160 EVP_PKEY_free(pkey);
1161 #ifndef OPENSSL_NO_RSA
1165 #ifndef OPENSSL_NO_DH
1172 static int ssl3_get_certificate_request(SSL *s)
1175 unsigned long n,nc,l;
1176 unsigned int llen,ctype_num,i;
1178 unsigned char *p,*d,*q;
1179 STACK_OF(X509_NAME) *ca_sk=NULL;
1181 n=ssl3_get_message(s,
1182 SSL3_ST_CR_CERT_REQ_A,
1183 SSL3_ST_CR_CERT_REQ_B,
1185 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32)
1186 1024*30, /* 30k max cert list :-) */
1188 1024*100, /* 100k max cert list :-) */
1192 if (!ok) return((int)n);
1194 s->s3->tmp.cert_req=0;
1196 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1198 s->s3->tmp.reuse_message=1;
1202 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1204 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1205 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1209 /* TLS does not like anon-DH with client cert */
1210 if (s->version > SSL3_VERSION)
1212 l=s->s3->tmp.new_cipher->algorithms;
1215 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1216 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1221 d=p=(unsigned char *)s->init_buf->data;
1223 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1225 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1229 /* get the certificate types */
1231 if (ctype_num > SSL3_CT_NUMBER)
1232 ctype_num=SSL3_CT_NUMBER;
1233 for (i=0; i<ctype_num; i++)
1234 s->s3->tmp.ctype[i]= p[i];
1237 /* get the CA RDNs */
1242 out=fopen("/tmp/vsign.der","w");
1243 fwrite(p,1,llen,out);
1248 if ((llen+ctype_num+2+1) != n)
1250 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1251 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1255 for (nc=0; nc<llen; )
1258 if ((l+nc+2) > llen)
1260 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1261 goto cont; /* netscape bugs */
1262 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1263 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1269 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1271 /* If netscape tolerance is on, ignore errors */
1272 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1276 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1277 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1284 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1285 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1288 if (!sk_X509_NAME_push(ca_sk,xn))
1290 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1304 /* we should setup a certificate to return.... */
1305 s->s3->tmp.cert_req=1;
1306 s->s3->tmp.ctype_num=ctype_num;
1307 if (s->s3->tmp.ca_names != NULL)
1308 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1309 s->s3->tmp.ca_names=ca_sk;
1314 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1318 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1320 return(X509_NAME_cmp(*a,*b));
1323 static int ssl3_get_server_done(SSL *s)
1328 n=ssl3_get_message(s,
1329 SSL3_ST_CR_SRVR_DONE_A,
1330 SSL3_ST_CR_SRVR_DONE_B,
1331 SSL3_MT_SERVER_DONE,
1332 30, /* should be very small, like 0 :-) */
1335 if (!ok) return((int)n);
1338 /* should contain no data */
1339 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1340 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1346 static int ssl3_send_client_key_exchange(SSL *s)
1348 unsigned char *p,*d;
1351 #ifndef OPENSSL_NO_RSA
1353 EVP_PKEY *pkey=NULL;
1355 #ifndef OPENSSL_NO_KRB5
1357 #endif /* OPENSSL_NO_KRB5 */
1359 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1361 d=(unsigned char *)s->init_buf->data;
1364 l=s->s3->tmp.new_cipher->algorithms;
1366 /* Fool emacs indentation */
1368 #ifndef OPENSSL_NO_RSA
1369 else if (l & SSL_kRSA)
1372 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1374 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1375 rsa=s->session->sess_cert->peer_rsa_tmp;
1378 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1379 if ((pkey == NULL) ||
1380 (pkey->type != EVP_PKEY_RSA) ||
1381 (pkey->pkey.rsa == NULL))
1383 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1387 EVP_PKEY_free(pkey);
1390 tmp_buf[0]=s->client_version>>8;
1391 tmp_buf[1]=s->client_version&0xff;
1392 if (RAND_bytes(&(tmp_buf[2]),SSL_MAX_MASTER_KEY_LENGTH-2) <= 0)
1395 s->session->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
1398 /* Fix buf for TLS and beyond */
1399 if (s->version > SSL3_VERSION)
1401 n=RSA_public_encrypt(SSL_MAX_MASTER_KEY_LENGTH,
1402 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1404 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1405 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1409 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1413 /* Fix buf for TLS and beyond */
1414 if (s->version > SSL3_VERSION)
1420 s->session->master_key_length=
1421 s->method->ssl3_enc->generate_master_secret(s,
1422 s->session->master_key,
1423 tmp_buf,SSL_MAX_MASTER_KEY_LENGTH);
1424 memset(tmp_buf,0,SSL_MAX_MASTER_KEY_LENGTH);
1427 #ifndef OPENSSL_NO_KRB5
1428 else if (l & SSL_kKRB5)
1430 krb5_error_code krb5rc;
1431 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1432 krb5_data krb5_ap_req;
1435 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1437 #endif /* KSSL_DEBUG */
1440 ** Tried to send random tmp_buf[] as PMS in Kerberos ticket
1441 ** by passing krb5_mk_req_extended(ctx,authctx,opts, tmp_buf, ...)
1442 ** but: I can't retrieve the PMS on the other side! There is
1443 ** some indication in the krb5 source that this is only used
1444 ** to generate a checksum. OTOH, the Tung book shows data
1445 ** ("GET widget01.txt") being passed in krb5_mk_req_extended()
1446 ** by way of krb5_sendauth(). I don't get it.
1447 ** Until Kerberos goes 3DES, the big PMS secret would only be
1448 ** encrypted in 1-DES anyway. So losing the PMS shouldn't be
1451 krb5rc = kssl_cget_tkt(kssl_ctx, &krb5_ap_req,
1455 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1456 kssl_ctx_show(kssl_ctx);
1457 if (krb5rc && kssl_err.text)
1458 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1460 #endif /* KSSL_DEBUG */
1464 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1465 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, kssl_err.reason);
1469 /* Send ticket (copy to *p, set n = length)
1471 n = krb5_ap_req.length;
1472 memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1473 if (krb5_ap_req.data)
1474 kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1476 /* 19991013 VRS - 3DES is kind of bogus here,
1477 ** at least until Kerberos supports 3DES. The only
1478 ** real secret is the 8-byte Kerberos session key;
1479 ** the other key material ((s->) client_random, server_random)
1480 ** could be sniffed. Mixing in these nonces should help
1481 ** protect against replay attacks, however.
1483 ** Alternate code for Kerberos Purists:
1485 ** memcpy(s->session->master_key, kssl_ctx->key, kssl_ctx->length);
1486 ** s->session->master_key_length = kssl_ctx->length;
1488 s->session->master_key_length=
1489 s->method->ssl3_enc->generate_master_secret(s,
1490 s->session->master_key, kssl_ctx->key,kssl_ctx->length);
1493 #ifndef OPENSSL_NO_DH
1494 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1496 DH *dh_srvr,*dh_clnt;
1498 if (s->session->sess_cert->peer_dh_tmp != NULL)
1499 dh_srvr=s->session->sess_cert->peer_dh_tmp;
1502 /* we get them from the cert */
1503 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1504 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
1508 /* generate a new random key */
1509 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
1511 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1514 if (!DH_generate_key(dh_clnt))
1516 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1520 /* use the 'p' output buffer for the DH key, but
1521 * make sure to clear it out afterwards */
1523 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
1527 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1531 /* generate master key from the result */
1532 s->session->master_key_length=
1533 s->method->ssl3_enc->generate_master_secret(s,
1534 s->session->master_key,p,n);
1538 /* send off the data */
1539 n=BN_num_bytes(dh_clnt->pub_key);
1541 BN_bn2bin(dh_clnt->pub_key,p);
1546 /* perhaps clean things up a bit EAY EAY EAY EAY*/
1551 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1552 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1556 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
1559 s->state=SSL3_ST_CW_KEY_EXCH_B;
1560 /* number of bytes to write */
1565 /* SSL3_ST_CW_KEY_EXCH_B */
1566 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1571 static int ssl3_send_client_verify(SSL *s)
1573 unsigned char *p,*d;
1574 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
1576 #ifndef OPENSSL_NO_RSA
1580 #ifndef OPENSSL_NO_DSA
1584 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
1586 d=(unsigned char *)s->init_buf->data;
1588 pkey=s->cert->key->privatekey;
1590 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
1591 &(data[MD5_DIGEST_LENGTH]));
1593 #ifndef OPENSSL_NO_RSA
1594 if (pkey->type == EVP_PKEY_RSA)
1596 s->method->ssl3_enc->cert_verify_mac(s,
1597 &(s->s3->finish_dgst1),&(data[0]));
1598 if (RSA_sign(NID_md5_sha1, data,
1599 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
1600 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
1602 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
1610 #ifndef OPENSSL_NO_DSA
1611 if (pkey->type == EVP_PKEY_DSA)
1613 if (!DSA_sign(pkey->save_type,
1614 &(data[MD5_DIGEST_LENGTH]),
1615 SHA_DIGEST_LENGTH,&(p[2]),
1616 (unsigned int *)&j,pkey->pkey.dsa))
1618 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
1627 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
1630 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
1633 s->init_num=(int)n+4;
1636 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1641 static int ssl3_send_client_certificate(SSL *s)
1644 EVP_PKEY *pkey=NULL;
1648 if (s->state == SSL3_ST_CW_CERT_A)
1650 if ((s->cert == NULL) ||
1651 (s->cert->key->x509 == NULL) ||
1652 (s->cert->key->privatekey == NULL))
1653 s->state=SSL3_ST_CW_CERT_B;
1655 s->state=SSL3_ST_CW_CERT_C;
1658 /* We need to get a client cert */
1659 if (s->state == SSL3_ST_CW_CERT_B)
1661 /* If we get an error, we need to
1662 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
1663 * We then get retied later */
1665 if (s->ctx->client_cert_cb != NULL)
1666 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
1669 s->rwstate=SSL_X509_LOOKUP;
1672 s->rwstate=SSL_NOTHING;
1673 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
1675 s->state=SSL3_ST_CW_CERT_B;
1676 if ( !SSL_use_certificate(s,x509) ||
1677 !SSL_use_PrivateKey(s,pkey))
1683 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
1686 if (x509 != NULL) X509_free(x509);
1687 if (pkey != NULL) EVP_PKEY_free(pkey);
1690 if (s->version == SSL3_VERSION)
1692 s->s3->tmp.cert_req=0;
1693 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
1698 s->s3->tmp.cert_req=2;
1702 /* Ok, we have a cert */
1703 s->state=SSL3_ST_CW_CERT_C;
1706 if (s->state == SSL3_ST_CW_CERT_C)
1708 s->state=SSL3_ST_CW_CERT_D;
1709 l=ssl3_output_cert_chain(s,
1710 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
1714 /* SSL3_ST_CW_CERT_D */
1715 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1718 #define has_bits(i,m) (((i)&(m)) == (m))
1720 static int ssl3_check_cert_and_algorithm(SSL *s)
1724 EVP_PKEY *pkey=NULL;
1726 #ifndef OPENSSL_NO_RSA
1729 #ifndef OPENSSL_NO_DH
1733 sc=s->session->sess_cert;
1737 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
1741 algs=s->s3->tmp.new_cipher->algorithms;
1743 /* we don't have a certificate */
1744 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
1747 #ifndef OPENSSL_NO_RSA
1748 rsa=s->session->sess_cert->peer_rsa_tmp;
1750 #ifndef OPENSSL_NO_DH
1751 dh=s->session->sess_cert->peer_dh_tmp;
1754 /* This is the passed certificate */
1756 idx=sc->peer_cert_type;
1757 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
1758 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
1759 EVP_PKEY_free(pkey);
1762 /* Check that we have a certificate if we require one */
1763 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
1765 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
1768 #ifndef OPENSSL_NO_DSA
1769 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
1771 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
1775 #ifndef OPENSSL_NO_RSA
1776 if ((algs & SSL_kRSA) &&
1777 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
1779 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
1783 #ifndef OPENSSL_NO_DH
1784 if ((algs & SSL_kEDH) &&
1785 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
1787 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
1790 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
1792 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
1795 #ifndef OPENSSL_NO_DSA
1796 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
1798 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
1804 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
1806 #ifndef OPENSSL_NO_RSA
1807 if (algs & SSL_kRSA)
1810 || RSA_size(rsa) > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
1812 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
1818 #ifndef OPENSSL_NO_DH
1819 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1822 || DH_size(dh) > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
1824 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
1831 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
1837 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);