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) 1998-2001 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).
112 #include "ssl_locl.h"
113 #ifndef OPENSSL_NO_SSL2
115 #include <openssl/rand.h>
116 #include <openssl/buffer.h>
117 #include <openssl/objects.h>
118 #include <openssl/evp.h>
120 static SSL_METHOD *ssl2_get_client_method(int ver);
121 static int get_server_finished(SSL *s);
122 static int get_server_verify(SSL *s);
123 static int get_server_hello(SSL *s);
124 static int client_hello(SSL *s);
125 static int client_master_key(SSL *s);
126 static int client_finished(SSL *s);
127 static int client_certificate(SSL *s);
128 static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from,
129 unsigned char *to,int padding);
132 static SSL_METHOD *ssl2_get_client_method(int ver)
134 if (ver == SSL2_VERSION)
135 return(SSLv2_client_method());
140 SSL_METHOD *SSLv2_client_method(void)
143 static SSL_METHOD SSLv2_client_data;
147 memcpy((char *)&SSLv2_client_data,(char *)sslv2_base_method(),
149 SSLv2_client_data.ssl_connect=ssl2_connect;
150 SSLv2_client_data.get_ssl_method=ssl2_get_client_method;
153 return(&SSLv2_client_data);
156 int ssl2_connect(SSL *s)
158 unsigned long l=time(NULL);
161 void (*cb)(const SSL *ssl,int type,int val)=NULL;
164 RAND_add(&l,sizeof(l),0);
168 if (s->info_callback != NULL)
170 else if (s->ctx->info_callback != NULL)
171 cb=s->ctx->info_callback;
173 /* init things to blank */
175 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
185 case SSL_ST_BEFORE|SSL_ST_CONNECT:
186 case SSL_ST_OK|SSL_ST_CONNECT:
189 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
191 s->version=SSL2_VERSION;
192 s->type=SSL_ST_CONNECT;
195 if ((buf == NULL) && ((buf=BUF_MEM_new()) == NULL))
200 if (!BUF_MEM_grow(buf,
201 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
208 s->state=SSL2_ST_SEND_CLIENT_HELLO_A;
209 s->ctx->stats.sess_connect++;
210 s->handshake_func=ssl2_connect;
213 case SSL2_ST_SEND_CLIENT_HELLO_A:
214 case SSL2_ST_SEND_CLIENT_HELLO_B:
217 if (ret <= 0) goto end;
219 s->state=SSL2_ST_GET_SERVER_HELLO_A;
222 case SSL2_ST_GET_SERVER_HELLO_A:
223 case SSL2_ST_GET_SERVER_HELLO_B:
224 ret=get_server_hello(s);
225 if (ret <= 0) goto end;
227 if (!s->hit) /* new session */
229 s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_A;
234 s->state=SSL2_ST_CLIENT_START_ENCRYPTION;
238 case SSL2_ST_SEND_CLIENT_MASTER_KEY_A:
239 case SSL2_ST_SEND_CLIENT_MASTER_KEY_B:
240 ret=client_master_key(s);
241 if (ret <= 0) goto end;
243 s->state=SSL2_ST_CLIENT_START_ENCRYPTION;
246 case SSL2_ST_CLIENT_START_ENCRYPTION:
247 /* Ok, we now have all the stuff needed to
248 * start encrypting, so lets fire it up :-) */
249 if (!ssl2_enc_init(s,1))
255 s->state=SSL2_ST_SEND_CLIENT_FINISHED_A;
258 case SSL2_ST_SEND_CLIENT_FINISHED_A:
259 case SSL2_ST_SEND_CLIENT_FINISHED_B:
260 ret=client_finished(s);
261 if (ret <= 0) goto end;
263 s->state=SSL2_ST_GET_SERVER_VERIFY_A;
266 case SSL2_ST_GET_SERVER_VERIFY_A:
267 case SSL2_ST_GET_SERVER_VERIFY_B:
268 ret=get_server_verify(s);
269 if (ret <= 0) goto end;
271 s->state=SSL2_ST_GET_SERVER_FINISHED_A;
274 case SSL2_ST_GET_SERVER_FINISHED_A:
275 case SSL2_ST_GET_SERVER_FINISHED_B:
276 ret=get_server_finished(s);
277 if (ret <= 0) goto end;
280 case SSL2_ST_SEND_CLIENT_CERTIFICATE_A:
281 case SSL2_ST_SEND_CLIENT_CERTIFICATE_B:
282 case SSL2_ST_SEND_CLIENT_CERTIFICATE_C:
283 case SSL2_ST_SEND_CLIENT_CERTIFICATE_D:
284 case SSL2_ST_X509_GET_CLIENT_CERTIFICATE:
285 ret=client_certificate(s);
286 if (ret <= 0) goto end;
288 s->state=SSL2_ST_GET_SERVER_FINISHED_A;
292 if (s->init_buf != NULL)
294 BUF_MEM_free(s->init_buf);
298 /* ERR_clear_error();*/
300 /* If we want to cache session-ids in the client
301 * and we successfully add the session-id to the
302 * cache, and there is a callback, then pass it out.
303 * 26/11/96 - eay - only add if not a re-used session.
306 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
307 if (s->hit) s->ctx->stats.sess_hit++;
311 s->ctx->stats.sess_connect_good++;
313 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
318 SSLerr(SSL_F_SSL2_CONNECT,SSL_R_UNKNOWN_STATE);
323 if ((cb != NULL) && (s->state != state))
327 cb(s,SSL_CB_CONNECT_LOOP,1);
334 cb(s,SSL_CB_CONNECT_EXIT,ret);
338 static int get_server_hello(SSL *s)
344 STACK_OF(SSL_CIPHER) *sk=NULL,*cl, *prio, *allow;
346 buf=(unsigned char *)s->init_buf->data;
348 if (s->state == SSL2_ST_GET_SERVER_HELLO_A)
350 i=ssl2_read(s,(char *)&(buf[s->init_num]),11-s->init_num);
351 if (i < (11-s->init_num))
352 return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i));
355 if (*(p++) != SSL2_MT_SERVER_HELLO)
357 if (p[-1] != SSL2_MT_ERROR)
359 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
360 SSLerr(SSL_F_GET_SERVER_HELLO,
361 SSL_R_READ_WRONG_PACKET_TYPE);
364 SSLerr(SSL_F_GET_SERVER_HELLO,
369 /* The Rhapsody 5.5 (a.k.a. MacOS X) compiler bug
370 * workaround. <appro@fy.chalmers.se> */
371 s->hit=(i=*(p++))?1:0;
375 s->s2->tmp.cert_type= *(p++);
377 if (i < s->version) s->version=i;
378 n2s(p,i); s->s2->tmp.cert_length=i;
379 n2s(p,i); s->s2->tmp.csl=i;
380 n2s(p,i); s->s2->tmp.conn_id_length=i;
381 s->state=SSL2_ST_GET_SERVER_HELLO_B;
384 /* SSL2_ST_GET_SERVER_HELLO_B */
385 len = 11 + (unsigned long)s->s2->tmp.cert_length + (unsigned long)s->s2->tmp.csl + (unsigned long)s->s2->tmp.conn_id_length;
386 if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
388 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_MESSAGE_TOO_LONG);
391 j = (int)len - s->init_num;
392 i = ssl2_read(s,(char *)&(buf[s->init_num]),j);
393 if (i != j) return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i));
395 s->msg_callback(0, s->version, 0, buf, (size_t)len, s, s->msg_callback_arg); /* SERVER-HELLO */
397 /* things are looking good */
402 if (s->s2->tmp.cert_length != 0)
404 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_LENGTH_NOT_ZERO);
407 if (s->s2->tmp.cert_type != 0)
410 SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG))
412 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_TYPE_NOT_ZERO);
416 if (s->s2->tmp.csl != 0)
418 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CIPHER_LIST_NOT_ZERO);
426 memset(s->session->session_id,0,
427 SSL_MAX_SSL_SESSION_ID_LENGTH_IN_BYTES);
428 s->session->session_id_length=0;
432 /* we need to do this in case we were trying to reuse a
433 * client session but others are already reusing it.
434 * If this was a new 'blank' session ID, the session-id
435 * length will still be 0 */
436 if (s->session->session_id_length > 0)
438 if (!ssl_get_new_session(s,0))
440 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
445 if (ssl2_set_certificate(s,s->s2->tmp.cert_type,
446 s->s2->tmp.cert_length,p) <= 0)
448 ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE);
451 p+=s->s2->tmp.cert_length;
453 if (s->s2->tmp.csl == 0)
455 ssl2_return_error(s,SSL2_PE_NO_CIPHER);
456 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_LIST);
460 /* We have just received a list of ciphers back from the
461 * server. We need to get the ones that match, then select
462 * the one we want the most :-). */
464 /* load the ciphers */
465 sk=ssl_bytes_to_cipher_list(s,p,s->s2->tmp.csl,
466 &s->session->ciphers);
470 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
471 SSLerr(SSL_F_GET_SERVER_HELLO,ERR_R_MALLOC_FAILURE);
475 sk_SSL_CIPHER_set_cmp_func(sk,ssl_cipher_ptr_id_cmp);
477 /* get the array of ciphers we will accept */
478 cl=SSL_get_ciphers(s);
479 sk_SSL_CIPHER_set_cmp_func(cl,ssl_cipher_ptr_id_cmp);
482 * If server preference flag set, choose the first
483 * (highest priority) cipher the server sends, otherwise
484 * client preference has priority.
486 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE)
496 /* In theory we could have ciphers sent back that we
497 * don't want to use but that does not matter since we
498 * will check against the list we originally sent and
499 * for performance reasons we should not bother to match
500 * the two lists up just to check. */
501 for (i=0; i<sk_SSL_CIPHER_num(prio); i++)
503 if (sk_SSL_CIPHER_find(allow,
504 sk_SSL_CIPHER_value(prio,i)) >= 0)
508 if (i >= sk_SSL_CIPHER_num(prio))
510 ssl2_return_error(s,SSL2_PE_NO_CIPHER);
511 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_MATCH);
514 s->session->cipher=sk_SSL_CIPHER_value(prio,i);
517 if (s->session->peer != NULL) /* can't happen*/
519 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
520 SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
524 s->session->peer = s->session->sess_cert->peer_key->x509;
525 /* peer_key->x509 has been set by ssl2_set_certificate. */
526 CRYPTO_add(&s->session->peer->references, 1, CRYPTO_LOCK_X509);
529 if (s->session->peer != s->session->sess_cert->peer_key->x509)
532 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
533 SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
537 s->s2->conn_id_length=s->s2->tmp.conn_id_length;
538 memcpy(s->s2->conn_id,p,s->s2->tmp.conn_id_length);
542 static int client_hello(SSL *s)
546 /* CIPHER **cipher;*/
549 buf=(unsigned char *)s->init_buf->data;
550 if (s->state == SSL2_ST_SEND_CLIENT_HELLO_A)
552 if ((s->session == NULL) ||
553 (s->session->ssl_version != s->version))
555 if (!ssl_get_new_session(s,0))
557 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
561 /* else use the pre-loaded session */
564 d=p+9; /* data section */
565 *(p++)=SSL2_MT_CLIENT_HELLO; /* type */
566 s2n(SSL2_VERSION,p); /* version */
569 n=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),d);
574 SSLerr(SSL_F_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
578 s2n(n,p); /* cipher spec num bytes */
580 if ((s->session->session_id_length > 0) &&
581 (s->session->session_id_length <=
582 SSL2_MAX_SSL_SESSION_ID_LENGTH))
584 i=s->session->session_id_length;
585 s2n(i,p); /* session id length */
586 memcpy(d,s->session->session_id,(unsigned int)i);
594 s->s2->challenge_length=SSL2_CHALLENGE_LENGTH;
595 s2n(SSL2_CHALLENGE_LENGTH,p); /* challenge length */
596 /*challenge id data*/
597 RAND_pseudo_bytes(s->s2->challenge,SSL2_CHALLENGE_LENGTH);
598 memcpy(d,s->s2->challenge,SSL2_CHALLENGE_LENGTH);
599 d+=SSL2_CHALLENGE_LENGTH;
601 s->state=SSL2_ST_SEND_CLIENT_HELLO_B;
605 /* SSL2_ST_SEND_CLIENT_HELLO_B */
606 return(ssl2_do_write(s));
609 static int client_master_key(SSL *s)
613 int clear,enc,karg,i;
618 buf=(unsigned char *)s->init_buf->data;
619 if (s->state == SSL2_ST_SEND_CLIENT_MASTER_KEY_A)
622 if (!ssl_cipher_get_evp(s->session,&c,&md,NULL))
624 ssl2_return_error(s,SSL2_PE_NO_CIPHER);
625 SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS);
631 *(p++)=SSL2_MT_CLIENT_MASTER_KEY;/* type */
633 i=ssl_put_cipher_by_char(s,sess->cipher,p);
636 /* make key_arg data */
637 i=EVP_CIPHER_iv_length(c);
638 sess->key_arg_length=i;
639 if (i > 0) RAND_pseudo_bytes(sess->key_arg,i);
641 /* make a master key */
642 i=EVP_CIPHER_key_length(c);
643 sess->master_key_length=i;
646 if (RAND_bytes(sess->master_key,i) <= 0)
648 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
653 if (sess->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC)
655 else if (SSL_C_IS_EXPORT(sess->cipher))
662 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
663 SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_CIPHER_TABLE_SRC_ERROR);
668 memcpy(d,sess->master_key,(unsigned int)clear);
671 enc=ssl_rsa_public_encrypt(sess->sess_cert,enc,
672 &(sess->master_key[clear]),d,
673 (s->s2->ssl2_rollback)?RSA_SSLV23_PADDING:RSA_PKCS1_PADDING);
676 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
677 SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PUBLIC_KEY_ENCRYPT_ERROR);
681 if (s->options & SSL_OP_PKCS1_CHECK_1) d[1]++;
682 if (s->options & SSL_OP_PKCS1_CHECK_2)
683 sess->master_key[clear]++;
687 karg=sess->key_arg_length;
688 s2n(karg,p); /* key arg size */
689 memcpy(d,sess->key_arg,(unsigned int)karg);
692 s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_B;
697 /* SSL2_ST_SEND_CLIENT_MASTER_KEY_B */
698 return(ssl2_do_write(s));
701 static int client_finished(SSL *s)
705 if (s->state == SSL2_ST_SEND_CLIENT_FINISHED_A)
707 p=(unsigned char *)s->init_buf->data;
708 *(p++)=SSL2_MT_CLIENT_FINISHED;
709 memcpy(p,s->s2->conn_id,(unsigned int)s->s2->conn_id_length);
711 s->state=SSL2_ST_SEND_CLIENT_FINISHED_B;
712 s->init_num=s->s2->conn_id_length+1;
715 return(ssl2_do_write(s));
718 /* read the data and then respond */
719 static int client_certificate(SSL *s)
726 unsigned char *cert_ch;
728 buf=(unsigned char *)s->init_buf->data;
730 /* We have a cert associated with the SSL, so attach it to
731 * the session if it does not have one */
733 if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_A)
735 i=ssl2_read(s,(char *)&(buf[s->init_num]),
736 SSL2_MAX_CERT_CHALLENGE_LENGTH+1-s->init_num);
737 if (i<(SSL2_MIN_CERT_CHALLENGE_LENGTH+1-s->init_num))
738 return(ssl2_part_read(s,SSL_F_CLIENT_CERTIFICATE,i));
741 s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* REQUEST-CERTIFICATE */
745 if (buf[1] != SSL2_AT_MD5_WITH_RSA_ENCRYPTION)
747 ssl2_return_error(s,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE);
748 SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_AUTHENTICATION_TYPE);
752 if ((s->cert == NULL) ||
753 (s->cert->key->x509 == NULL) ||
754 (s->cert->key->privatekey == NULL))
756 s->state=SSL2_ST_X509_GET_CLIENT_CERTIFICATE;
759 s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C;
763 cert_ch_len = s->init_num - 2;
765 if (s->state == SSL2_ST_X509_GET_CLIENT_CERTIFICATE)
770 /* If we get an error we need to
771 * ssl->rwstate=SSL_X509_LOOKUP;
773 * We should then be retried when things are ok and we
774 * can get a cert or not */
777 if (s->ctx->client_cert_cb != NULL)
779 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
784 s->rwstate=SSL_X509_LOOKUP;
787 s->rwstate=SSL_NOTHING;
789 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
791 s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C;
792 if ( !SSL_use_certificate(s,x509) ||
793 !SSL_use_PrivateKey(s,pkey))
802 if (x509 != NULL) X509_free(x509);
803 if (pkey != NULL) EVP_PKEY_free(pkey);
804 SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
810 /* We have no client certificate to respond with
811 * so send the correct error message back */
812 s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_B;
814 *(p++)=SSL2_MT_ERROR;
815 s2n(SSL2_PE_NO_CERTIFICATE,p);
818 /* Write is done at the end */
822 if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_B)
824 return(ssl2_do_write(s));
827 if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_C)
831 /* ok, now we calculate the checksum
832 * do it first so we can reuse buf :-) */
834 EVP_MD_CTX_init(&ctx);
835 EVP_SignInit_ex(&ctx,s->ctx->rsa_md5, NULL);
836 EVP_SignUpdate(&ctx,s->s2->key_material,
837 (unsigned int)s->s2->key_material_length);
838 EVP_SignUpdate(&ctx,cert_ch,(unsigned int)cert_ch_len);
839 n=i2d_X509(s->session->sess_cert->peer_key->x509,&p);
840 EVP_SignUpdate(&ctx,buf,(unsigned int)n);
844 *(p++)=SSL2_MT_CLIENT_CERTIFICATE;
845 *(p++)=SSL2_CT_X509_CERTIFICATE;
846 n=i2d_X509(s->cert->key->x509,&d);
849 if (!EVP_SignFinal(&ctx,d,&n,s->cert->key->privatekey))
851 /* this is not good. If things have failed it
852 * means there so something wrong with the key.
853 * We will continue with a 0 length signature
856 EVP_MD_CTX_cleanup(&ctx);
860 s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_D;
864 /* if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_D) */
865 return(ssl2_do_write(s));
868 static int get_server_verify(SSL *s)
873 p=(unsigned char *)s->init_buf->data;
874 if (s->state == SSL2_ST_GET_SERVER_VERIFY_A)
876 i=ssl2_read(s,(char *)&(p[s->init_num]),1-s->init_num);
877 if (i < (1-s->init_num))
878 return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i));
881 s->state= SSL2_ST_GET_SERVER_VERIFY_B;
882 if (*p != SSL2_MT_SERVER_VERIFY)
884 if (p[0] != SSL2_MT_ERROR)
886 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
887 SSLerr(SSL_F_GET_SERVER_VERIFY,
888 SSL_R_READ_WRONG_PACKET_TYPE);
892 SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_PEER_ERROR);
893 /* try to read the error message */
894 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
895 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
901 p=(unsigned char *)s->init_buf->data;
902 len = 1 + s->s2->challenge_length;
903 n = len - s->init_num;
904 i = ssl2_read(s,(char *)&(p[s->init_num]),n);
906 return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i));
908 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* SERVER-VERIFY */
911 if (memcmp(p,s->s2->challenge,(unsigned int)s->s2->challenge_length) != 0)
913 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
914 SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_CHALLENGE_IS_DIFFERENT);
920 static int get_server_finished(SSL *s)
926 buf=(unsigned char *)s->init_buf->data;
928 if (s->state == SSL2_ST_GET_SERVER_FINISHED_A)
930 i=ssl2_read(s,(char *)&(buf[s->init_num]),1-s->init_num);
931 if (i < (1-s->init_num))
932 return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i));
935 if (*p == SSL2_MT_REQUEST_CERTIFICATE)
937 s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_A;
940 else if (*p != SSL2_MT_SERVER_FINISHED)
942 if (p[0] != SSL2_MT_ERROR)
944 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
945 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_READ_WRONG_PACKET_TYPE);
949 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_PEER_ERROR);
950 /* try to read the error message */
951 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
952 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
956 s->state=SSL2_ST_GET_SERVER_FINISHED_B;
959 len = 1 + SSL2_SSL_SESSION_ID_LENGTH;
960 n = len - s->init_num;
961 i = ssl2_read(s,(char *)&(buf[s->init_num]), n);
962 if (i < n) /* XXX could be shorter than SSL2_SSL_SESSION_ID_LENGTH, that's the maximum */
963 return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i));
966 s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* SERVER-FINISHED */
968 if (!s->hit) /* new session */
971 /* Make sure we were not trying to re-use an old SSL_SESSION
972 * or bad things can happen */
974 s->session->session_id_length=SSL2_SSL_SESSION_ID_LENGTH;
975 memcpy(s->session->session_id,p,SSL2_SSL_SESSION_ID_LENGTH);
979 if (!(s->options & SSL_OP_MICROSOFT_SESS_ID_BUG))
981 if (memcmp(buf,s->session->session_id,
982 (unsigned int)s->session->session_id_length) != 0)
984 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
985 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_SSL_SESSION_ID_IS_DIFFERENT);
990 s->state = SSL_ST_OK;
994 /* loads in the certificate from the server */
995 int ssl2_set_certificate(SSL *s, int type, int len, unsigned char *data)
997 STACK_OF(X509) *sk=NULL;
1004 x509=d2i_X509(NULL,&data,(long)len);
1007 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_X509_LIB);
1011 if ((sk=sk_X509_new_null()) == NULL || !sk_X509_push(sk,x509))
1013 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1017 i=ssl_verify_cert_chain(s,sk);
1019 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i))
1021 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1024 ERR_clear_error(); /* but we keep s->verify_result */
1025 s->session->verify_result = s->verify_result;
1027 /* server's cert for this session */
1028 sc=ssl_sess_cert_new();
1034 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1035 s->session->sess_cert=sc;
1037 sc->peer_pkeys[SSL_PKEY_RSA_ENC].x509=x509;
1038 sc->peer_key= &(sc->peer_pkeys[SSL_PKEY_RSA_ENC]);
1040 pkey=X509_get_pubkey(x509);
1044 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_UNABLE_TO_EXTRACT_PUBLIC_KEY);
1047 if (pkey->type != EVP_PKEY_RSA)
1049 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_PUBLIC_KEY_NOT_RSA);
1053 if (!ssl_set_peer_cert_type(sc,SSL2_CT_X509_CERTIFICATE))
1059 EVP_PKEY_free(pkey);
1063 static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from,
1064 unsigned char *to, int padding)
1066 EVP_PKEY *pkey=NULL;
1069 if ((sc == NULL) || (sc->peer_key->x509 == NULL) ||
1070 ((pkey=X509_get_pubkey(sc->peer_key->x509)) == NULL))
1072 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_NO_PUBLICKEY);
1075 if (pkey->type != EVP_PKEY_RSA)
1077 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_PUBLIC_KEY_IS_NOT_RSA);
1081 /* we have the public key */
1082 i=RSA_public_encrypt(len,from,to,pkey->pkey.rsa,padding);
1084 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,ERR_R_RSA_LIB);
1086 EVP_PKEY_free(pkey);
1089 #else /* !OPENSSL_NO_SSL2 */
1092 static void *dummy=&dummy;