+++ /dev/null
-/* ssl/s3_clnt.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-/* ====================================================================
- * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-/* ====================================================================
- * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
- *
- * Portions of the attached software ("Contribution") are developed by
- * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
- *
- * The Contribution is licensed pursuant to the OpenSSL open source
- * license provided above.
- *
- * ECC cipher suite support in OpenSSL originally written by
- * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
- *
- */
-/* ====================================================================
- * Copyright 2005 Nokia. All rights reserved.
- *
- * The portions of the attached software ("Contribution") is developed by
- * Nokia Corporation and is licensed pursuant to the OpenSSL open source
- * license.
- *
- * The Contribution, originally written by Mika Kousa and Pasi Eronen of
- * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
- * support (see RFC 4279) to OpenSSL.
- *
- * No patent licenses or other rights except those expressly stated in
- * the OpenSSL open source license shall be deemed granted or received
- * expressly, by implication, estoppel, or otherwise.
- *
- * No assurances are provided by Nokia that the Contribution does not
- * infringe the patent or other intellectual property rights of any third
- * party or that the license provides you with all the necessary rights
- * to make use of the Contribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
- * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
- * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
- * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
- * OTHERWISE.
- */
-
-#include <stdio.h>
-#include "ssl_locl.h"
-#include "kssl_lcl.h"
-#include <openssl/buffer.h>
-#include <openssl/rand.h>
-#include <openssl/objects.h>
-#include <openssl/evp.h>
-#include <openssl/md5.h>
-#ifdef OPENSSL_FIPS
-#include <openssl/fips.h>
-#endif
-#ifndef OPENSSL_NO_DH
-#include <openssl/dh.h>
-#endif
-#include <openssl/bn.h>
-#ifndef OPENSSL_NO_ENGINE
-#include <openssl/engine.h>
-#endif
-
-static const SSL_METHOD *ssl3_get_client_method(int ver);
-static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
-
-static const SSL_METHOD *ssl3_get_client_method(int ver)
- {
- if (ver == SSL3_VERSION)
- return(SSLv3_client_method());
- else
- return(NULL);
- }
-
-IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
- ssl_undefined_function,
- ssl3_connect,
- ssl3_get_client_method)
-
-int ssl3_connect(SSL *s)
- {
- BUF_MEM *buf=NULL;
- unsigned long Time=(unsigned long)time(NULL);
- void (*cb)(const SSL *ssl,int type,int val)=NULL;
- int ret= -1;
- int new_state,state,skip=0;
-
- RAND_add(&Time,sizeof(Time),0);
- ERR_clear_error();
- clear_sys_error();
-
- if (s->info_callback != NULL)
- cb=s->info_callback;
- else if (s->ctx->info_callback != NULL)
- cb=s->ctx->info_callback;
-
- s->in_handshake++;
- if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
-
-#ifndef OPENSSL_NO_HEARTBEATS
- /* If we're awaiting a HeartbeatResponse, pretend we
- * already got and don't await it anymore, because
- * Heartbeats don't make sense during handshakes anyway.
- */
- if (s->tlsext_hb_pending)
- {
- s->tlsext_hb_pending = 0;
- s->tlsext_hb_seq++;
- }
-#endif
-
- for (;;)
- {
- state=s->state;
-
- switch(s->state)
- {
- case SSL_ST_RENEGOTIATE:
- s->renegotiate=1;
- s->state=SSL_ST_CONNECT;
- s->ctx->stats.sess_connect_renegotiate++;
- /* break */
- case SSL_ST_BEFORE:
- case SSL_ST_CONNECT:
- case SSL_ST_BEFORE|SSL_ST_CONNECT:
- case SSL_ST_OK|SSL_ST_CONNECT:
-
- s->server=0;
- if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
-
- if ((s->version & 0xff00 ) != 0x0300)
- {
- SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
- ret = -1;
- goto end;
- }
-
- /* s->version=SSL3_VERSION; */
- s->type=SSL_ST_CONNECT;
-
- if (s->init_buf == NULL)
- {
- if ((buf=BUF_MEM_new()) == NULL)
- {
- ret= -1;
- goto end;
- }
- if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
- {
- ret= -1;
- goto end;
- }
- s->init_buf=buf;
- buf=NULL;
- }
-
- if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
-
- /* setup buffing BIO */
- if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
-
- /* don't push the buffering BIO quite yet */
-
- ssl3_init_finished_mac(s);
-
- s->state=SSL3_ST_CW_CLNT_HELLO_A;
- s->ctx->stats.sess_connect++;
- s->init_num=0;
- break;
-
- case SSL3_ST_CW_CLNT_HELLO_A:
- case SSL3_ST_CW_CLNT_HELLO_B:
-
- s->shutdown=0;
- ret=ssl3_client_hello(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CR_SRVR_HELLO_A;
- s->init_num=0;
-
- /* turn on buffering for the next lot of output */
- if (s->bbio != s->wbio)
- s->wbio=BIO_push(s->bbio,s->wbio);
-
- break;
-
- case SSL3_ST_CR_SRVR_HELLO_A:
- case SSL3_ST_CR_SRVR_HELLO_B:
- ret=ssl3_get_server_hello(s);
- if (ret <= 0) goto end;
-
- if (s->hit)
- {
- s->state=SSL3_ST_CR_FINISHED_A;
-#ifndef OPENSSL_NO_TLSEXT
- if (s->tlsext_ticket_expected)
- {
- /* receive renewed session ticket */
- s->state=SSL3_ST_CR_SESSION_TICKET_A;
- }
-#endif
- }
- else
- s->state=SSL3_ST_CR_CERT_A;
- s->init_num=0;
- break;
-
- case SSL3_ST_CR_CERT_A:
- case SSL3_ST_CR_CERT_B:
-#ifndef OPENSSL_NO_TLSEXT
- ret=ssl3_check_finished(s);
- if (ret <= 0) goto end;
- if (ret == 2)
- {
- s->hit = 1;
- if (s->tlsext_ticket_expected)
- s->state=SSL3_ST_CR_SESSION_TICKET_A;
- else
- s->state=SSL3_ST_CR_FINISHED_A;
- s->init_num=0;
- break;
- }
-#endif
- /* Check if it is anon DH/ECDH, SRP auth */
- /* or PSK */
- if (!(s->s3->tmp.new_cipher->algorithm_auth & (SSL_aNULL|SSL_aSRP)) &&
- !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
- {
- ret=ssl3_get_server_certificate(s);
- if (ret <= 0) goto end;
-#ifndef OPENSSL_NO_TLSEXT
- if (s->tlsext_status_expected)
- s->state=SSL3_ST_CR_CERT_STATUS_A;
- else
- s->state=SSL3_ST_CR_KEY_EXCH_A;
- }
- else
- {
- skip = 1;
- s->state=SSL3_ST_CR_KEY_EXCH_A;
- }
-#else
- }
- else
- skip=1;
-
- s->state=SSL3_ST_CR_KEY_EXCH_A;
-#endif
- s->init_num=0;
- break;
-
- case SSL3_ST_CR_KEY_EXCH_A:
- case SSL3_ST_CR_KEY_EXCH_B:
- ret=ssl3_get_key_exchange(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CR_CERT_REQ_A;
- s->init_num=0;
-
- /* at this point we check that we have the
- * required stuff from the server */
- if (!ssl3_check_cert_and_algorithm(s))
- {
- ret= -1;
- goto end;
- }
- break;
-
- case SSL3_ST_CR_CERT_REQ_A:
- case SSL3_ST_CR_CERT_REQ_B:
- ret=ssl3_get_certificate_request(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CR_SRVR_DONE_A;
- s->init_num=0;
- break;
-
- case SSL3_ST_CR_SRVR_DONE_A:
- case SSL3_ST_CR_SRVR_DONE_B:
- ret=ssl3_get_server_done(s);
- if (ret <= 0) goto end;
-#ifndef OPENSSL_NO_SRP
- if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
- {
- if ((ret = SRP_Calc_A_param(s))<=0)
- {
- SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
- goto end;
- }
- }
-#endif
- if (s->s3->tmp.cert_req)
- s->state=SSL3_ST_CW_CERT_A;
- else
- s->state=SSL3_ST_CW_KEY_EXCH_A;
- s->init_num=0;
-
- break;
-
- case SSL3_ST_CW_CERT_A:
- case SSL3_ST_CW_CERT_B:
- case SSL3_ST_CW_CERT_C:
- case SSL3_ST_CW_CERT_D:
- ret=ssl3_send_client_certificate(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CW_KEY_EXCH_A;
- s->init_num=0;
- break;
-
- case SSL3_ST_CW_KEY_EXCH_A:
- case SSL3_ST_CW_KEY_EXCH_B:
- ret=ssl3_send_client_key_exchange(s);
- if (ret <= 0) goto end;
- /* EAY EAY EAY need to check for DH fix cert
- * sent back */
- /* For TLS, cert_req is set to 2, so a cert chain
- * of nothing is sent, but no verify packet is sent */
- /* XXX: For now, we do not support client
- * authentication in ECDH cipher suites with
- * ECDH (rather than ECDSA) certificates.
- * We need to skip the certificate verify
- * message when client's ECDH public key is sent
- * inside the client certificate.
- */
- if (s->s3->tmp.cert_req == 1)
- {
- s->state=SSL3_ST_CW_CERT_VRFY_A;
- }
- else
- {
- s->state=SSL3_ST_CW_CHANGE_A;
- s->s3->change_cipher_spec=0;
- }
- if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
- {
- s->state=SSL3_ST_CW_CHANGE_A;
- s->s3->change_cipher_spec=0;
- }
-
- s->init_num=0;
- break;
-
- case SSL3_ST_CW_CERT_VRFY_A:
- case SSL3_ST_CW_CERT_VRFY_B:
- ret=ssl3_send_client_verify(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CW_CHANGE_A;
- s->init_num=0;
- s->s3->change_cipher_spec=0;
- break;
-
- case SSL3_ST_CW_CHANGE_A:
- case SSL3_ST_CW_CHANGE_B:
- ret=ssl3_send_change_cipher_spec(s,
- SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
- if (ret <= 0) goto end;
-
-#if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
- s->state=SSL3_ST_CW_FINISHED_A;
-#else
- if (s->s3->next_proto_neg_seen)
- s->state=SSL3_ST_CW_NEXT_PROTO_A;
- else
- s->state=SSL3_ST_CW_FINISHED_A;
-#endif
- s->init_num=0;
-
- s->session->cipher=s->s3->tmp.new_cipher;
-#ifdef OPENSSL_NO_COMP
- s->session->compress_meth=0;
-#else
- if (s->s3->tmp.new_compression == NULL)
- s->session->compress_meth=0;
- else
- s->session->compress_meth=
- s->s3->tmp.new_compression->id;
-#endif
- if (!s->method->ssl3_enc->setup_key_block(s))
- {
- ret= -1;
- goto end;
- }
-
- if (!s->method->ssl3_enc->change_cipher_state(s,
- SSL3_CHANGE_CIPHER_CLIENT_WRITE))
- {
- ret= -1;
- goto end;
- }
-
- break;
-
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
- case SSL3_ST_CW_NEXT_PROTO_A:
- case SSL3_ST_CW_NEXT_PROTO_B:
- ret=ssl3_send_next_proto(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CW_FINISHED_A;
- break;
-#endif
-
- case SSL3_ST_CW_FINISHED_A:
- case SSL3_ST_CW_FINISHED_B:
- ret=ssl3_send_finished(s,
- SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
- s->method->ssl3_enc->client_finished_label,
- s->method->ssl3_enc->client_finished_label_len);
- if (ret <= 0) goto end;
- s->s3->flags |= SSL3_FLAGS_CCS_OK;
- s->state=SSL3_ST_CW_FLUSH;
-
- /* clear flags */
- s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
- if (s->hit)
- {
- s->s3->tmp.next_state=SSL_ST_OK;
- if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
- {
- s->state=SSL_ST_OK;
- s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
- s->s3->delay_buf_pop_ret=0;
- }
- }
- else
- {
-#ifndef OPENSSL_NO_TLSEXT
- /* Allow NewSessionTicket if ticket expected */
- if (s->tlsext_ticket_expected)
- s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
- else
-#endif
-
- s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
- }
- s->init_num=0;
- break;
-
-#ifndef OPENSSL_NO_TLSEXT
- case SSL3_ST_CR_SESSION_TICKET_A:
- case SSL3_ST_CR_SESSION_TICKET_B:
- ret=ssl3_get_new_session_ticket(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CR_FINISHED_A;
- s->init_num=0;
- break;
-
- case SSL3_ST_CR_CERT_STATUS_A:
- case SSL3_ST_CR_CERT_STATUS_B:
- ret=ssl3_get_cert_status(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CR_KEY_EXCH_A;
- s->init_num=0;
- break;
-#endif
-
- case SSL3_ST_CR_FINISHED_A:
- case SSL3_ST_CR_FINISHED_B:
-
- s->s3->flags |= SSL3_FLAGS_CCS_OK;
- ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
- SSL3_ST_CR_FINISHED_B);
- if (ret <= 0) goto end;
-
- if (s->hit)
- s->state=SSL3_ST_CW_CHANGE_A;
- else
- s->state=SSL_ST_OK;
- s->init_num=0;
- break;
-
- case SSL3_ST_CW_FLUSH:
- s->rwstate=SSL_WRITING;
- if (BIO_flush(s->wbio) <= 0)
- {
- ret= -1;
- goto end;
- }
- s->rwstate=SSL_NOTHING;
- s->state=s->s3->tmp.next_state;
- break;
-
- case SSL_ST_OK:
- /* clean a few things up */
- ssl3_cleanup_key_block(s);
-
- if (s->init_buf != NULL)
- {
- BUF_MEM_free(s->init_buf);
- s->init_buf=NULL;
- }
-
- /* If we are not 'joining' the last two packets,
- * remove the buffering now */
- if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
- ssl_free_wbio_buffer(s);
- /* else do it later in ssl3_write */
-
- s->init_num=0;
- s->renegotiate=0;
- s->new_session=0;
-
- ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
- if (s->hit) s->ctx->stats.sess_hit++;
-
- ret=1;
- /* s->server=0; */
- s->handshake_func=ssl3_connect;
- s->ctx->stats.sess_connect_good++;
-
- if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
-
- goto end;
- /* break; */
-
- default:
- SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
- ret= -1;
- goto end;
- /* break; */
- }
-
- /* did we do anything */
- if (!s->s3->tmp.reuse_message && !skip)
- {
- if (s->debug)
- {
- if ((ret=BIO_flush(s->wbio)) <= 0)
- goto end;
- }
-
- if ((cb != NULL) && (s->state != state))
- {
- new_state=s->state;
- s->state=state;
- cb(s,SSL_CB_CONNECT_LOOP,1);
- s->state=new_state;
- }
- }
- skip=0;
- }
-end:
- s->in_handshake--;
- if (buf != NULL)
- BUF_MEM_free(buf);
- if (cb != NULL)
- cb(s,SSL_CB_CONNECT_EXIT,ret);
- return(ret);
- }
-
-
-int ssl3_client_hello(SSL *s)
- {
- unsigned char *buf;
- unsigned char *p,*d;
- int i;
- unsigned long l;
-#ifndef OPENSSL_NO_COMP
- int j;
- SSL_COMP *comp;
-#endif
-
- buf=(unsigned char *)s->init_buf->data;
- if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
- {
- SSL_SESSION *sess = s->session;
- if ((sess == NULL) ||
- (sess->ssl_version != s->version) ||
-#ifdef OPENSSL_NO_TLSEXT
- !sess->session_id_length ||
-#else
- (!sess->session_id_length && !sess->tlsext_tick) ||
-#endif
- (sess->not_resumable))
- {
- if (!ssl_get_new_session(s,0))
- goto err;
- }
- /* else use the pre-loaded session */
-
- p=s->s3->client_random;
-
- if (ssl_fill_hello_random(s, 0, p, SSL3_RANDOM_SIZE) <= 0)
- goto err;
-
- /* Do the message type and length last */
- d=p= &(buf[4]);
-
- /* version indicates the negotiated version: for example from
- * an SSLv2/v3 compatible client hello). The client_version
- * field is the maximum version we permit and it is also
- * used in RSA encrypted premaster secrets. Some servers can
- * choke if we initially report a higher version then
- * renegotiate to a lower one in the premaster secret. This
- * didn't happen with TLS 1.0 as most servers supported it
- * but it can with TLS 1.1 or later if the server only supports
- * 1.0.
- *
- * Possible scenario with previous logic:
- * 1. Client hello indicates TLS 1.2
- * 2. Server hello says TLS 1.0
- * 3. RSA encrypted premaster secret uses 1.2.
- * 4. Handhaked proceeds using TLS 1.0.
- * 5. Server sends hello request to renegotiate.
- * 6. Client hello indicates TLS v1.0 as we now
- * know that is maximum server supports.
- * 7. Server chokes on RSA encrypted premaster secret
- * containing version 1.0.
- *
- * For interoperability it should be OK to always use the
- * maximum version we support in client hello and then rely
- * on the checking of version to ensure the servers isn't
- * being inconsistent: for example initially negotiating with
- * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
- * client_version in client hello and not resetting it to
- * the negotiated version.
- */
-#if 0
- *(p++)=s->version>>8;
- *(p++)=s->version&0xff;
- s->client_version=s->version;
-#else
- *(p++)=s->client_version>>8;
- *(p++)=s->client_version&0xff;
-#endif
-
- /* Random stuff */
- memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
- p+=SSL3_RANDOM_SIZE;
-
- /* Session ID */
- if (s->new_session)
- i=0;
- else
- i=s->session->session_id_length;
- *(p++)=i;
- if (i != 0)
- {
- if (i > (int)sizeof(s->session->session_id))
- {
- SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
- goto err;
- }
- memcpy(p,s->session->session_id,i);
- p+=i;
- }
-
- /* Ciphers supported */
- i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
- if (i == 0)
- {
- SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
- goto err;
- }
-#ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
- /* Some servers hang if client hello > 256 bytes
- * as hack workaround chop number of supported ciphers
- * to keep it well below this if we use TLS v1.2
- */
- if (TLS1_get_version(s) >= TLS1_2_VERSION
- && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
- i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
-#endif
- s2n(i,p);
- p+=i;
-
- /* COMPRESSION */
-#ifdef OPENSSL_NO_COMP
- *(p++)=1;
-#else
-
- if ((s->options & SSL_OP_NO_COMPRESSION)
- || !s->ctx->comp_methods)
- j=0;
- else
- j=sk_SSL_COMP_num(s->ctx->comp_methods);
- *(p++)=1+j;
- for (i=0; i<j; i++)
- {
- comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
- *(p++)=comp->id;
- }
-#endif
- *(p++)=0; /* Add the NULL method */
-
-#ifndef OPENSSL_NO_TLSEXT
- /* TLS extensions*/
- if (ssl_prepare_clienthello_tlsext(s) <= 0)
- {
- SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
- goto err;
- }
- if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
- {
- SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
- goto err;
- }
-#endif
-
- l=(p-d);
- d=buf;
- *(d++)=SSL3_MT_CLIENT_HELLO;
- l2n3(l,d);
-
- s->state=SSL3_ST_CW_CLNT_HELLO_B;
- /* number of bytes to write */
- s->init_num=p-buf;
- s->init_off=0;
- }
-
- /* SSL3_ST_CW_CLNT_HELLO_B */
- return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
-err:
- return(-1);
- }
-
-int ssl3_get_server_hello(SSL *s)
- {
- STACK_OF(SSL_CIPHER) *sk;
- const SSL_CIPHER *c;
- unsigned char *p,*d;
- int i,al,ok;
- unsigned int j;
- long n;
-#ifndef OPENSSL_NO_COMP
- SSL_COMP *comp;
-#endif
-
- n=s->method->ssl_get_message(s,
- SSL3_ST_CR_SRVR_HELLO_A,
- SSL3_ST_CR_SRVR_HELLO_B,
- -1,
- 20000, /* ?? */
- &ok);
-
- if (!ok) return((int)n);
-
- if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
- {
- if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
- {
- if ( s->d1->send_cookie == 0)
- {
- s->s3->tmp.reuse_message = 1;
- return 1;
- }
- else /* already sent a cookie */
- {
- al=SSL_AD_UNEXPECTED_MESSAGE;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
- goto f_err;
- }
- }
- }
-
- if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
- {
- al=SSL_AD_UNEXPECTED_MESSAGE;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
- goto f_err;
- }
-
- d=p=(unsigned char *)s->init_msg;
-
- if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
- {
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
- s->version=(s->version&0xff00)|p[1];
- al=SSL_AD_PROTOCOL_VERSION;
- goto f_err;
- }
- p+=2;
-
- /* load the server hello data */
- /* load the server random */
- memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
- p+=SSL3_RANDOM_SIZE;
-
- /* get the session-id */
- j= *(p++);
-
- if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
- {
- al=SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
- goto f_err;
- }
-
-#ifndef OPENSSL_NO_TLSEXT
- /* check if we want to resume the session based on external pre-shared secret */
- if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
- {
- SSL_CIPHER *pref_cipher=NULL;
- s->session->master_key_length=sizeof(s->session->master_key);
- if (s->tls_session_secret_cb(s, s->session->master_key,
- &s->session->master_key_length,
- NULL, &pref_cipher,
- s->tls_session_secret_cb_arg))
- {
- s->session->cipher = pref_cipher ?
- pref_cipher : ssl_get_cipher_by_char(s, p+j);
- s->s3->flags |= SSL3_FLAGS_CCS_OK;
- }
- }
-#endif /* OPENSSL_NO_TLSEXT */
-
- if (j != 0 && j == s->session->session_id_length
- && memcmp(p,s->session->session_id,j) == 0)
- {
- if(s->sid_ctx_length != s->session->sid_ctx_length
- || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
- {
- /* actually a client application bug */
- al=SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
- goto f_err;
- }
- s->s3->flags |= SSL3_FLAGS_CCS_OK;
- s->hit=1;
- }
- else /* a miss or crap from the other end */
- {
- /* If we were trying for session-id reuse, make a new
- * SSL_SESSION so we don't stuff up other people */
- s->hit=0;
- if (s->session->session_id_length > 0)
- {
- if (!ssl_get_new_session(s,0))
- {
- al=SSL_AD_INTERNAL_ERROR;
- goto f_err;
- }
- }
- s->session->session_id_length=j;
- memcpy(s->session->session_id,p,j); /* j could be 0 */
- }
- p+=j;
- c=ssl_get_cipher_by_char(s,p);
- if (c == NULL)
- {
- /* unknown cipher */
- al=SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
- goto f_err;
- }
- /* TLS v1.2 only ciphersuites require v1.2 or later */
- if ((c->algorithm_ssl & SSL_TLSV1_2) &&
- (TLS1_get_version(s) < TLS1_2_VERSION))
- {
- al=SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
- goto f_err;
- }
-#ifndef OPENSSL_NO_SRP
- if (((c->algorithm_mkey & SSL_kSRP) || (c->algorithm_auth & SSL_aSRP)) &&
- !(s->srp_ctx.srp_Mask & SSL_kSRP))
- {
- al=SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
- goto f_err;
- }
-#endif /* OPENSSL_NO_SRP */
- p+=ssl_put_cipher_by_char(s,NULL,NULL);
-
- sk=ssl_get_ciphers_by_id(s);
- i=sk_SSL_CIPHER_find(sk,c);
- if (i < 0)
- {
- /* we did not say we would use this cipher */
- al=SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
- goto f_err;
- }
-
- /* Depending on the session caching (internal/external), the cipher
- and/or cipher_id values may not be set. Make sure that
- cipher_id is set and use it for comparison. */
- if (s->session->cipher)
- s->session->cipher_id = s->session->cipher->id;
- if (s->hit && (s->session->cipher_id != c->id))
- {
-/* Workaround is now obsolete */
-#if 0
- if (!(s->options &
- SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
-#endif
- {
- al=SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
- goto f_err;
- }
- }
- s->s3->tmp.new_cipher=c;
- /* Don't digest cached records if TLS v1.2: we may need them for
- * client authentication.
- */
- if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
- {
- al = SSL_AD_INTERNAL_ERROR;
- goto f_err;
- }
- /* lets get the compression algorithm */
- /* COMPRESSION */
-#ifdef OPENSSL_NO_COMP
- if (*(p++) != 0)
- {
- al=SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
- goto f_err;
- }
- /* If compression is disabled we'd better not try to resume a session
- * using compression.
- */
- if (s->session->compress_meth != 0)
- {
- al=SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
- goto f_err;
- }
-#else
- j= *(p++);
- if (s->hit && j != s->session->compress_meth)
- {
- al=SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
- goto f_err;
- }
- if (j == 0)
- comp=NULL;
- else if (s->options & SSL_OP_NO_COMPRESSION)
- {
- al=SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
- goto f_err;
- }
- else
- comp=ssl3_comp_find(s->ctx->comp_methods,j);
-
- if ((j != 0) && (comp == NULL))
- {
- al=SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
- goto f_err;
- }
- else
- {
- s->s3->tmp.new_compression=comp;
- }
-#endif
-
-#ifndef OPENSSL_NO_TLSEXT
- /* TLS extensions*/
- if (s->version >= SSL3_VERSION)
- {
- if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
- {
- /* 'al' set by ssl_parse_serverhello_tlsext */
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
- goto f_err;
- }
- if (ssl_check_serverhello_tlsext(s) <= 0)
- {
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
- goto err;
- }
- }
-#endif
-
- if (p != (d+n))
- {
- /* wrong packet length */
- al=SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
- goto f_err;
- }
-
- return(1);
-f_err:
- ssl3_send_alert(s,SSL3_AL_FATAL,al);
-err:
- return(-1);
- }
-
-int ssl3_get_server_certificate(SSL *s)
- {
- int al,i,ok,ret= -1;
- unsigned long n,nc,llen,l;
- X509 *x=NULL;
- const unsigned char *q,*p;
- unsigned char *d;
- STACK_OF(X509) *sk=NULL;
- SESS_CERT *sc;
- EVP_PKEY *pkey=NULL;
- int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
-
- n=s->method->ssl_get_message(s,
- SSL3_ST_CR_CERT_A,
- SSL3_ST_CR_CERT_B,
- -1,
- s->max_cert_list,
- &ok);
-
- if (!ok) return((int)n);
-
- if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
- ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
- (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
- {
- s->s3->tmp.reuse_message=1;
- return(1);
- }
-
- if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
- {
- al=SSL_AD_UNEXPECTED_MESSAGE;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
- goto f_err;
- }
- p=d=(unsigned char *)s->init_msg;
-
- if ((sk=sk_X509_new_null()) == NULL)
- {
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- n2l3(p,llen);
- if (llen+3 != n)
- {
- al=SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
- goto f_err;
- }
- for (nc=0; nc<llen; )
- {
- n2l3(p,l);
- if ((l+nc+3) > llen)
- {
- al=SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
- goto f_err;
- }
-
- q=p;
- x=d2i_X509(NULL,&q,l);
- if (x == NULL)
- {
- al=SSL_AD_BAD_CERTIFICATE;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
- goto f_err;
- }
- if (q != (p+l))
- {
- al=SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
- goto f_err;
- }
- if (!sk_X509_push(sk,x))
- {
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- x=NULL;
- nc+=l+3;
- p=q;
- }
-
- i=ssl_verify_cert_chain(s,sk);
- if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
-#ifndef OPENSSL_NO_KRB5
- && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
- (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
-#endif /* OPENSSL_NO_KRB5 */
- )
- {
- al=ssl_verify_alarm_type(s->verify_result);
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
- goto f_err;
- }
- ERR_clear_error(); /* but we keep s->verify_result */
-
- sc=ssl_sess_cert_new();
- if (sc == NULL) goto err;
-
- if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
- s->session->sess_cert=sc;
-
- sc->cert_chain=sk;
- /* Inconsistency alert: cert_chain does include the peer's
- * certificate, which we don't include in s3_srvr.c */
- x=sk_X509_value(sk,0);
- sk=NULL;
- /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
-
- pkey=X509_get_pubkey(x);
-
- /* VRS: allow null cert if auth == KRB5 */
- need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
- (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
- ? 0 : 1;
-
-#ifdef KSSL_DEBUG
- printf("pkey,x = %p, %p\n", pkey,x);
- printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
- printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
- s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
-#endif /* KSSL_DEBUG */
-
- if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
- {
- x=NULL;
- al=SSL3_AL_FATAL;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
- SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
- goto f_err;
- }
-
- i=ssl_cert_type(x,pkey);
- if (need_cert && i < 0)
- {
- x=NULL;
- al=SSL3_AL_FATAL;
- SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
- SSL_R_UNKNOWN_CERTIFICATE_TYPE);
- goto f_err;
- }
-
- if (need_cert)
- {
- sc->peer_cert_type=i;
- CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
- /* Why would the following ever happen?
- * We just created sc a couple of lines ago. */
- if (sc->peer_pkeys[i].x509 != NULL)
- X509_free(sc->peer_pkeys[i].x509);
- sc->peer_pkeys[i].x509=x;
- sc->peer_key= &(sc->peer_pkeys[i]);
-
- if (s->session->peer != NULL)
- X509_free(s->session->peer);
- CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
- s->session->peer=x;
- }
- else
- {
- sc->peer_cert_type=i;
- sc->peer_key= NULL;
-
- if (s->session->peer != NULL)
- X509_free(s->session->peer);
- s->session->peer=NULL;
- }
- s->session->verify_result = s->verify_result;
-
- x=NULL;
- ret=1;
-
- if (0)
- {
-f_err:
- ssl3_send_alert(s,SSL3_AL_FATAL,al);
- }
-err:
- EVP_PKEY_free(pkey);
- X509_free(x);
- sk_X509_pop_free(sk,X509_free);
- return(ret);
- }
-
-int ssl3_get_key_exchange(SSL *s)
- {
-#ifndef OPENSSL_NO_RSA
- unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
-#endif
- EVP_MD_CTX md_ctx;
- unsigned char *param,*p;
- int al,j,ok;
- long i,param_len,n,alg_k,alg_a;
- EVP_PKEY *pkey=NULL;
- const EVP_MD *md = NULL;
-#ifndef OPENSSL_NO_RSA
- RSA *rsa=NULL;
-#endif
-#ifndef OPENSSL_NO_DH
- DH *dh=NULL;
-#endif
-#ifndef OPENSSL_NO_ECDH
- EC_KEY *ecdh = NULL;
- BN_CTX *bn_ctx = NULL;
- EC_POINT *srvr_ecpoint = NULL;
- int curve_nid = 0;
- int encoded_pt_len = 0;
-#endif
-
- /* use same message size as in ssl3_get_certificate_request()
- * as ServerKeyExchange message may be skipped */
- n=s->method->ssl_get_message(s,
- SSL3_ST_CR_KEY_EXCH_A,
- SSL3_ST_CR_KEY_EXCH_B,
- -1,
- s->max_cert_list,
- &ok);
- if (!ok) return((int)n);
-
- if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
- {
-#ifndef OPENSSL_NO_PSK
- /* In plain PSK ciphersuite, ServerKeyExchange can be
- omitted if no identity hint is sent. Set
- session->sess_cert anyway to avoid problems
- later.*/
- if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
- {
- s->session->sess_cert=ssl_sess_cert_new();
- if (s->ctx->psk_identity_hint)
- OPENSSL_free(s->ctx->psk_identity_hint);
- s->ctx->psk_identity_hint = NULL;
- }
-#endif
- s->s3->tmp.reuse_message=1;
- return(1);
- }
-
- param=p=(unsigned char *)s->init_msg;
- if (s->session->sess_cert != NULL)
- {
-#ifndef OPENSSL_NO_RSA
- if (s->session->sess_cert->peer_rsa_tmp != NULL)
- {
- RSA_free(s->session->sess_cert->peer_rsa_tmp);
- s->session->sess_cert->peer_rsa_tmp=NULL;
- }
-#endif
-#ifndef OPENSSL_NO_DH
- if (s->session->sess_cert->peer_dh_tmp)
- {
- DH_free(s->session->sess_cert->peer_dh_tmp);
- s->session->sess_cert->peer_dh_tmp=NULL;
- }
-#endif
-#ifndef OPENSSL_NO_ECDH
- if (s->session->sess_cert->peer_ecdh_tmp)
- {
- EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
- s->session->sess_cert->peer_ecdh_tmp=NULL;
- }
-#endif
- }
- else
- {
- s->session->sess_cert=ssl_sess_cert_new();
- }
-
- /* Total length of the parameters including the length prefix */
- param_len=0;
-
- alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
- alg_a=s->s3->tmp.new_cipher->algorithm_auth;
- EVP_MD_CTX_init(&md_ctx);
-
- al=SSL_AD_DECODE_ERROR;
-
-#ifndef OPENSSL_NO_PSK
- if (alg_k & SSL_kPSK)
- {
- char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
-
- param_len = 2;
- if (param_len > n)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- n2s(p,i);
-
- /* Store PSK identity hint for later use, hint is used
- * in ssl3_send_client_key_exchange. Assume that the
- * maximum length of a PSK identity hint can be as
- * long as the maximum length of a PSK identity. */
- if (i > PSK_MAX_IDENTITY_LEN)
- {
- al=SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_DATA_LENGTH_TOO_LONG);
- goto f_err;
- }
- if (i > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
- goto f_err;
- }
- param_len += i;
-
- /* If received PSK identity hint contains NULL
- * characters, the hint is truncated from the first
- * NULL. p may not be ending with NULL, so create a
- * NULL-terminated string. */
- memcpy(tmp_id_hint, p, i);
- memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
- if (s->ctx->psk_identity_hint != NULL)
- OPENSSL_free(s->ctx->psk_identity_hint);
- s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
- if (s->ctx->psk_identity_hint == NULL)
- {
- al=SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
- goto f_err;
- }
-
- p+=i;
- n-=param_len;
- }
- else
-#endif /* !OPENSSL_NO_PSK */
-#ifndef OPENSSL_NO_SRP
- if (alg_k & SSL_kSRP)
- {
- param_len = 2;
- if (param_len > n)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- n2s(p,i);
-
- if (i > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
- goto f_err;
- }
- param_len += i;
-
- if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
- goto err;
- }
- p+=i;
-
-
- if (2 > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- param_len += 2;
-
- n2s(p,i);
-
- if (i > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
- goto f_err;
- }
- param_len += i;
-
- if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
- goto err;
- }
- p+=i;
-
-
- if (1 > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- param_len += 1;
-
- i = (unsigned int)(p[0]);
- p++;
-
- if (i > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
- goto f_err;
- }
- param_len += i;
-
- if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
- goto err;
- }
- p+=i;
-
- if (2 > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- param_len += 2;
-
- n2s(p,i);
-
- if (i > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
- goto f_err;
- }
- param_len += i;
-
- if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
- goto err;
- }
- p+=i;
- n-=param_len;
-
- if (!srp_verify_server_param(s, &al))
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_PARAMETERS);
- goto f_err;
- }
-
-/* We must check if there is a certificate */
-#ifndef OPENSSL_NO_RSA
- if (alg_a & SSL_aRSA)
- pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
-#else
- if (0)
- ;
-#endif
-#ifndef OPENSSL_NO_DSA
- else if (alg_a & SSL_aDSS)
- pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
-#endif
- }
- else
-#endif /* !OPENSSL_NO_SRP */
-#ifndef OPENSSL_NO_RSA
- if (alg_k & SSL_kRSA)
- {
- if ((rsa=RSA_new()) == NULL)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- param_len = 2;
- if (param_len > n)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- n2s(p,i);
-
- if (i > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
- goto f_err;
- }
- param_len += i;
-
- if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
- goto err;
- }
- p+=i;
-
- if (2 > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- param_len += 2;
-
- n2s(p,i);
-
- if (i > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
- goto f_err;
- }
- param_len += i;
-
- if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
- goto err;
- }
- p+=i;
- n-=param_len;
-
- /* this should be because we are using an export cipher */
- if (alg_a & SSL_aRSA)
- pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
- else
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
- goto err;
- }
- s->session->sess_cert->peer_rsa_tmp=rsa;
- rsa=NULL;
- }
-#else /* OPENSSL_NO_RSA */
- if (0)
- ;
-#endif
-#ifndef OPENSSL_NO_DH
- else if (alg_k & SSL_kEDH)
- {
- if ((dh=DH_new()) == NULL)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
- goto err;
- }
-
- param_len = 2;
- if (param_len > n)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- n2s(p,i);
-
- if (i > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
- goto f_err;
- }
- param_len += i;
-
- if (!(dh->p=BN_bin2bn(p,i,NULL)))
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
- goto err;
- }
- p+=i;
-
- if (2 > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- param_len += 2;
-
- n2s(p,i);
-
- if (i > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
- goto f_err;
- }
- param_len += i;
-
- if (!(dh->g=BN_bin2bn(p,i,NULL)))
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
- goto err;
- }
- p+=i;
-
- if (2 > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- param_len += 2;
-
- n2s(p,i);
-
- if (i > n - param_len)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
- goto f_err;
- }
- param_len += i;
-
- if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
- goto err;
- }
- p+=i;
- n-=param_len;
-
-#ifndef OPENSSL_NO_RSA
- if (alg_a & SSL_aRSA)
- pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
-#else
- if (0)
- ;
-#endif
-#ifndef OPENSSL_NO_DSA
- else if (alg_a & SSL_aDSS)
- pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
-#endif
- /* else anonymous DH, so no certificate or pkey. */
-
- s->session->sess_cert->peer_dh_tmp=dh;
- dh=NULL;
- }
- else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
- {
- al=SSL_AD_ILLEGAL_PARAMETER;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
- goto f_err;
- }
-#endif /* !OPENSSL_NO_DH */
-
-#ifndef OPENSSL_NO_ECDH
- else if (alg_k & SSL_kEECDH)
- {
- EC_GROUP *ngroup;
- const EC_GROUP *group;
-
- if ((ecdh=EC_KEY_new()) == NULL)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- /* Extract elliptic curve parameters and the
- * server's ephemeral ECDH public key.
- * Keep accumulating lengths of various components in
- * param_len and make sure it never exceeds n.
- */
-
- /* XXX: For now we only support named (not generic) curves
- * and the ECParameters in this case is just three bytes. We
- * also need one byte for the length of the encoded point
- */
- param_len=4;
- if (param_len > n)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
-
- if ((*p != NAMED_CURVE_TYPE) ||
- ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
- {
- al=SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
- goto f_err;
- }
-
- ngroup = EC_GROUP_new_by_curve_name(curve_nid);
- if (ngroup == NULL)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
- goto err;
- }
- if (EC_KEY_set_group(ecdh, ngroup) == 0)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
- goto err;
- }
- EC_GROUP_free(ngroup);
-
- group = EC_KEY_get0_group(ecdh);
-
- if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
- (EC_GROUP_get_degree(group) > 163))
- {
- al=SSL_AD_EXPORT_RESTRICTION;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
- goto f_err;
- }
-
- p+=3;
-
- /* Next, get the encoded ECPoint */
- if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
- ((bn_ctx = BN_CTX_new()) == NULL))
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- encoded_pt_len = *p; /* length of encoded point */
- p+=1;
-
- if ((encoded_pt_len > n - param_len) ||
- (EC_POINT_oct2point(group, srvr_ecpoint,
- p, encoded_pt_len, bn_ctx) == 0))
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
- goto f_err;
- }
- param_len += encoded_pt_len;
-
- n-=param_len;
- p+=encoded_pt_len;
-
- /* The ECC/TLS specification does not mention
- * the use of DSA to sign ECParameters in the server
- * key exchange message. We do support RSA and ECDSA.
- */
- if (0) ;
-#ifndef OPENSSL_NO_RSA
- else if (alg_a & SSL_aRSA)
- pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
-#endif
-#ifndef OPENSSL_NO_ECDSA
- else if (alg_a & SSL_aECDSA)
- pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
-#endif
- /* else anonymous ECDH, so no certificate or pkey. */
- EC_KEY_set_public_key(ecdh, srvr_ecpoint);
- s->session->sess_cert->peer_ecdh_tmp=ecdh;
- ecdh=NULL;
- BN_CTX_free(bn_ctx);
- bn_ctx = NULL;
- EC_POINT_free(srvr_ecpoint);
- srvr_ecpoint = NULL;
- }
- else if (alg_k)
- {
- al=SSL_AD_UNEXPECTED_MESSAGE;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
- goto f_err;
- }
-#endif /* !OPENSSL_NO_ECDH */
-
-
- /* p points to the next byte, there are 'n' bytes left */
-
- /* if it was signed, check the signature */
- if (pkey != NULL)
- {
- if (TLS1_get_version(s) >= TLS1_2_VERSION)
- {
- int sigalg;
- if (2 > n)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
-
- sigalg = tls12_get_sigid(pkey);
- /* Should never happen */
- if (sigalg == -1)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
- goto err;
- }
- /* Check key type is consistent with signature */
- if (sigalg != (int)p[1])
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
- al=SSL_AD_DECODE_ERROR;
- goto f_err;
- }
- md = tls12_get_hash(p[0]);
- if (md == NULL)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
- goto f_err;
- }
-#ifdef SSL_DEBUG
-fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
-#endif
- p += 2;
- n -= 2;
- }
- else
- md = EVP_sha1();
-
- if (2 > n)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
- SSL_R_LENGTH_TOO_SHORT);
- goto f_err;
- }
- n2s(p,i);
- n-=2;
- j=EVP_PKEY_size(pkey);
-
- /* Check signature length. If n is 0 then signature is empty */
- if ((i != n) || (n > j) || (n <= 0))
- {
- /* wrong packet length */
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
- goto f_err;
- }
-
-#ifndef OPENSSL_NO_RSA
- if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
- {
- int num;
- unsigned int size;
-
- j=0;
- q=md_buf;
- for (num=2; num > 0; num--)
- {
- EVP_MD_CTX_set_flags(&md_ctx,
- EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
- EVP_DigestInit_ex(&md_ctx,(num == 2)
- ?s->ctx->md5:s->ctx->sha1, NULL);
- EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
- EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
- EVP_DigestUpdate(&md_ctx,param,param_len);
- EVP_DigestFinal_ex(&md_ctx,q,&size);
- q+=size;
- j+=size;
- }
- i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
- pkey->pkey.rsa);
- if (i < 0)
- {
- al=SSL_AD_DECRYPT_ERROR;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
- goto f_err;
- }
- if (i == 0)
- {
- /* bad signature */
- al=SSL_AD_DECRYPT_ERROR;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
- goto f_err;
- }
- }
- else
-#endif
- {
- EVP_VerifyInit_ex(&md_ctx, md, NULL);
- EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
- EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
- EVP_VerifyUpdate(&md_ctx,param,param_len);
- if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
- {
- /* bad signature */
- al=SSL_AD_DECRYPT_ERROR;
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
- goto f_err;
- }
- }
- }
- else
- {
- /* aNULL, aSRP or kPSK do not need public keys */
- if (!(alg_a & (SSL_aNULL|SSL_aSRP)) && !(alg_k & SSL_kPSK))
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
- goto err;
- }
- /* still data left over */
- if (n != 0)
- {
- SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
- goto f_err;
- }
- }
- EVP_PKEY_free(pkey);
- EVP_MD_CTX_cleanup(&md_ctx);
- return(1);
-f_err:
- ssl3_send_alert(s,SSL3_AL_FATAL,al);
-err:
- EVP_PKEY_free(pkey);
-#ifndef OPENSSL_NO_RSA
- if (rsa != NULL)
- RSA_free(rsa);
-#endif
-#ifndef OPENSSL_NO_DH
- if (dh != NULL)
- DH_free(dh);
-#endif
-#ifndef OPENSSL_NO_ECDH
- BN_CTX_free(bn_ctx);
- EC_POINT_free(srvr_ecpoint);
- if (ecdh != NULL)
- EC_KEY_free(ecdh);
-#endif
- EVP_MD_CTX_cleanup(&md_ctx);
- return(-1);
- }
-
-int ssl3_get_certificate_request(SSL *s)
- {
- int ok,ret=0;
- unsigned long n,nc,l;
- unsigned int llen, ctype_num,i;
- X509_NAME *xn=NULL;
- const unsigned char *p,*q;
- unsigned char *d;
- STACK_OF(X509_NAME) *ca_sk=NULL;
-
- n=s->method->ssl_get_message(s,
- SSL3_ST_CR_CERT_REQ_A,
- SSL3_ST_CR_CERT_REQ_B,
- -1,
- s->max_cert_list,
- &ok);
-
- if (!ok) return((int)n);
-
- s->s3->tmp.cert_req=0;
-
- if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
- {
- s->s3->tmp.reuse_message=1;
- /* If we get here we don't need any cached handshake records
- * as we wont be doing client auth.
- */
- if (s->s3->handshake_buffer)
- {
- if (!ssl3_digest_cached_records(s))
- goto err;
- }
- return(1);
- }
-
- if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
- {
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
- goto err;
- }
-
- /* TLS does not like anon-DH with client cert */
- if (s->version > SSL3_VERSION)
- {
- if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
- {
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
- goto err;
- }
- }
-
- p=d=(unsigned char *)s->init_msg;
-
- if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
- {
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- /* get the certificate types */
- ctype_num= *(p++);
- if (ctype_num > SSL3_CT_NUMBER)
- ctype_num=SSL3_CT_NUMBER;
- for (i=0; i<ctype_num; i++)
- s->s3->tmp.ctype[i]= p[i];
- p+=ctype_num;
- if (TLS1_get_version(s) >= TLS1_2_VERSION)
- {
- n2s(p, llen);
- /* Check we have enough room for signature algorithms and
- * following length value.
- */
- if ((unsigned long)(p - d + llen + 2) > n)
- {
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
- goto err;
- }
- if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
- {
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
- goto err;
- }
- p += llen;
- }
-
- /* get the CA RDNs */
- n2s(p,llen);
-#if 0
-{
-FILE *out;
-out=fopen("/tmp/vsign.der","w");
-fwrite(p,1,llen,out);
-fclose(out);
-}
-#endif
-
- if ((unsigned long)(p - d + llen) != n)
- {
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
- goto err;
- }
-
- for (nc=0; nc<llen; )
- {
- n2s(p,l);
- if ((l+nc+2) > llen)
- {
- if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
- goto cont; /* netscape bugs */
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
- goto err;
- }
-
- q=p;
-
- if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
- {
- /* If netscape tolerance is on, ignore errors */
- if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
- goto cont;
- else
- {
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
- goto err;
- }
- }
-
- if (q != (p+l))
- {
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
- goto err;
- }
- if (!sk_X509_NAME_push(ca_sk,xn))
- {
- SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- p+=l;
- nc+=l+2;
- }
-
- if (0)
- {
-cont:
- ERR_clear_error();
- }
-
- /* we should setup a certificate to return.... */
- s->s3->tmp.cert_req=1;
- s->s3->tmp.ctype_num=ctype_num;
- if (s->s3->tmp.ca_names != NULL)
- sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
- s->s3->tmp.ca_names=ca_sk;
- ca_sk=NULL;
-
- ret=1;
-err:
- if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
- return(ret);
- }
-
-static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
- {
- return(X509_NAME_cmp(*a,*b));
- }
-#ifndef OPENSSL_NO_TLSEXT
-int ssl3_get_new_session_ticket(SSL *s)
- {
- int ok,al,ret=0, ticklen;
- long n;
- const unsigned char *p;
- unsigned char *d;
-
- n=s->method->ssl_get_message(s,
- SSL3_ST_CR_SESSION_TICKET_A,
- SSL3_ST_CR_SESSION_TICKET_B,
- -1,
- 16384,
- &ok);
-
- if (!ok)
- return((int)n);
-
- if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
- {
- s->s3->tmp.reuse_message=1;
- return(1);
- }
- if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
- {
- al=SSL_AD_UNEXPECTED_MESSAGE;
- SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
- goto f_err;
- }
- if (n < 6)
- {
- /* need at least ticket_lifetime_hint + ticket length */
- al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
- goto f_err;
- }
-
- p=d=(unsigned char *)s->init_msg;
- n2l(p, s->session->tlsext_tick_lifetime_hint);
- n2s(p, ticklen);
- /* ticket_lifetime_hint + ticket_length + ticket */
- if (ticklen + 6 != n)
- {
- al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
- goto f_err;
- }
- if (s->session->tlsext_tick)
- {
- OPENSSL_free(s->session->tlsext_tick);
- s->session->tlsext_ticklen = 0;
- }
- s->session->tlsext_tick = OPENSSL_malloc(ticklen);
- if (!s->session->tlsext_tick)
- {
- SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- memcpy(s->session->tlsext_tick, p, ticklen);
- s->session->tlsext_ticklen = ticklen;
- /* There are two ways to detect a resumed ticket sesion.
- * One is to set an appropriate session ID and then the server
- * must return a match in ServerHello. This allows the normal
- * client session ID matching to work and we know much
- * earlier that the ticket has been accepted.
- *
- * The other way is to set zero length session ID when the
- * ticket is presented and rely on the handshake to determine
- * session resumption.
- *
- * We choose the former approach because this fits in with
- * assumptions elsewhere in OpenSSL. The session ID is set
- * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
- * ticket.
- */
- EVP_Digest(p, ticklen,
- s->session->session_id, &s->session->session_id_length,
-#ifndef OPENSSL_NO_SHA256
- EVP_sha256(), NULL);
-#else
- EVP_sha1(), NULL);
-#endif
- ret=1;
- return(ret);
-f_err:
- ssl3_send_alert(s,SSL3_AL_FATAL,al);
-err:
- return(-1);
- }
-
-int ssl3_get_cert_status(SSL *s)
- {
- int ok, al;
- unsigned long resplen,n;
- const unsigned char *p;
-
- n=s->method->ssl_get_message(s,
- SSL3_ST_CR_CERT_STATUS_A,
- SSL3_ST_CR_CERT_STATUS_B,
- SSL3_MT_CERTIFICATE_STATUS,
- 16384,
- &ok);
-
- if (!ok) return((int)n);
- if (n < 4)
- {
- /* need at least status type + length */
- al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
- goto f_err;
- }
- p = (unsigned char *)s->init_msg;
- if (*p++ != TLSEXT_STATUSTYPE_ocsp)
- {
- al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
- goto f_err;
- }
- n2l3(p, resplen);
- if (resplen + 4 != n)
- {
- al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
- goto f_err;
- }
- if (s->tlsext_ocsp_resp)
- OPENSSL_free(s->tlsext_ocsp_resp);
- s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
- if (!s->tlsext_ocsp_resp)
- {
- al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
- goto f_err;
- }
- s->tlsext_ocsp_resplen = resplen;
- if (s->ctx->tlsext_status_cb)
- {
- int ret;
- ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
- if (ret == 0)
- {
- al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
- SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
- goto f_err;
- }
- if (ret < 0)
- {
- al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
- goto f_err;
- }
- }
- return 1;
-f_err:
- ssl3_send_alert(s,SSL3_AL_FATAL,al);
- return(-1);
- }
-#endif
-
-int ssl3_get_server_done(SSL *s)
- {
- int ok,ret=0;
- long n;
-
- n=s->method->ssl_get_message(s,
- SSL3_ST_CR_SRVR_DONE_A,
- SSL3_ST_CR_SRVR_DONE_B,
- SSL3_MT_SERVER_DONE,
- 30, /* should be very small, like 0 :-) */
- &ok);
-
- if (!ok) return((int)n);
- if (n > 0)
- {
- /* should contain no data */
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
- SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
- return -1;
- }
- ret=1;
- return(ret);
- }
-
-
-int ssl3_send_client_key_exchange(SSL *s)
- {
- unsigned char *p,*d;
- int n;
- unsigned long alg_k;
-#ifndef OPENSSL_NO_RSA
- unsigned char *q;
- EVP_PKEY *pkey=NULL;
-#endif
-#ifndef OPENSSL_NO_KRB5
- KSSL_ERR kssl_err;
-#endif /* OPENSSL_NO_KRB5 */
-#ifndef OPENSSL_NO_ECDH
- EC_KEY *clnt_ecdh = NULL;
- const EC_POINT *srvr_ecpoint = NULL;
- EVP_PKEY *srvr_pub_pkey = NULL;
- unsigned char *encodedPoint = NULL;
- int encoded_pt_len = 0;
- BN_CTX * bn_ctx = NULL;
-#endif
-
- if (s->state == SSL3_ST_CW_KEY_EXCH_A)
- {
- d=(unsigned char *)s->init_buf->data;
- p= &(d[4]);
-
- alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
-
- /* Fool emacs indentation */
- if (0) {}
-#ifndef OPENSSL_NO_RSA
- else if (alg_k & SSL_kRSA)
- {
- RSA *rsa;
- unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
-
- if (s->session->sess_cert == NULL)
- {
- /* We should always have a server certificate with SSL_kRSA. */
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
- goto err;
- }
-
- if (s->session->sess_cert->peer_rsa_tmp != NULL)
- rsa=s->session->sess_cert->peer_rsa_tmp;
- else
- {
- pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
- if ((pkey == NULL) ||
- (pkey->type != EVP_PKEY_RSA) ||
- (pkey->pkey.rsa == NULL))
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
- goto err;
- }
- rsa=pkey->pkey.rsa;
- EVP_PKEY_free(pkey);
- }
-
- tmp_buf[0]=s->client_version>>8;
- tmp_buf[1]=s->client_version&0xff;
- if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
- goto err;
-
- s->session->master_key_length=sizeof tmp_buf;
-
- q=p;
- /* Fix buf for TLS and beyond */
- if (s->version > SSL3_VERSION)
- p+=2;
- n=RSA_public_encrypt(sizeof tmp_buf,
- tmp_buf,p,rsa,RSA_PKCS1_PADDING);
-#ifdef PKCS1_CHECK
- if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
- if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
-#endif
- if (n <= 0)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
- goto err;
- }
-
- /* Fix buf for TLS and beyond */
- if (s->version > SSL3_VERSION)
- {
- s2n(n,q);
- n+=2;
- }
-
- s->session->master_key_length=
- s->method->ssl3_enc->generate_master_secret(s,
- s->session->master_key,
- tmp_buf,sizeof tmp_buf);
- OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
- }
-#endif
-#ifndef OPENSSL_NO_KRB5
- else if (alg_k & SSL_kKRB5)
- {
- krb5_error_code krb5rc;
- KSSL_CTX *kssl_ctx = s->kssl_ctx;
- /* krb5_data krb5_ap_req; */
- krb5_data *enc_ticket;
- krb5_data authenticator, *authp = NULL;
- EVP_CIPHER_CTX ciph_ctx;
- const EVP_CIPHER *enc = NULL;
- unsigned char iv[EVP_MAX_IV_LENGTH];
- unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
- unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
- + EVP_MAX_IV_LENGTH];
- int padl, outl = sizeof(epms);
-
- EVP_CIPHER_CTX_init(&ciph_ctx);
-
-#ifdef KSSL_DEBUG
- printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
- alg_k, SSL_kKRB5);
-#endif /* KSSL_DEBUG */
-
- authp = NULL;
-#ifdef KRB5SENDAUTH
- if (KRB5SENDAUTH) authp = &authenticator;
-#endif /* KRB5SENDAUTH */
-
- krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
- &kssl_err);
- enc = kssl_map_enc(kssl_ctx->enctype);
- if (enc == NULL)
- goto err;
-#ifdef KSSL_DEBUG
- {
- printf("kssl_cget_tkt rtn %d\n", krb5rc);
- if (krb5rc && kssl_err.text)
- printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
- }
-#endif /* KSSL_DEBUG */
-
- if (krb5rc)
- {
- ssl3_send_alert(s,SSL3_AL_FATAL,
- SSL_AD_HANDSHAKE_FAILURE);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- kssl_err.reason);
- goto err;
- }
-
- /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
- ** in place of RFC 2712 KerberosWrapper, as in:
- **
- ** Send ticket (copy to *p, set n = length)
- ** n = krb5_ap_req.length;
- ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
- ** if (krb5_ap_req.data)
- ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
- **
- ** Now using real RFC 2712 KerberosWrapper
- ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
- ** Note: 2712 "opaque" types are here replaced
- ** with a 2-byte length followed by the value.
- ** Example:
- ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
- ** Where "xx xx" = length bytes. Shown here with
- ** optional authenticator omitted.
- */
-
- /* KerberosWrapper.Ticket */
- s2n(enc_ticket->length,p);
- memcpy(p, enc_ticket->data, enc_ticket->length);
- p+= enc_ticket->length;
- n = enc_ticket->length + 2;
-
- /* KerberosWrapper.Authenticator */
- if (authp && authp->length)
- {
- s2n(authp->length,p);
- memcpy(p, authp->data, authp->length);
- p+= authp->length;
- n+= authp->length + 2;
-
- free(authp->data);
- authp->data = NULL;
- authp->length = 0;
- }
- else
- {
- s2n(0,p);/* null authenticator length */
- n+=2;
- }
-
- tmp_buf[0]=s->client_version>>8;
- tmp_buf[1]=s->client_version&0xff;
- if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
- goto err;
-
- /* 20010420 VRS. Tried it this way; failed.
- ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
- ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
- ** kssl_ctx->length);
- ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
- */
-
- memset(iv, 0, sizeof iv); /* per RFC 1510 */
- EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
- kssl_ctx->key,iv);
- EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
- sizeof tmp_buf);
- EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
- outl += padl;
- if (outl > (int)sizeof epms)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
- goto err;
- }
- EVP_CIPHER_CTX_cleanup(&ciph_ctx);
-
- /* KerberosWrapper.EncryptedPreMasterSecret */
- s2n(outl,p);
- memcpy(p, epms, outl);
- p+=outl;
- n+=outl + 2;
-
- s->session->master_key_length=
- s->method->ssl3_enc->generate_master_secret(s,
- s->session->master_key,
- tmp_buf, sizeof tmp_buf);
-
- OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
- OPENSSL_cleanse(epms, outl);
- }
-#endif
-#ifndef OPENSSL_NO_DH
- else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
- {
- DH *dh_srvr,*dh_clnt;
-
- if (s->session->sess_cert == NULL)
- {
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
- goto err;
- }
-
- if (s->session->sess_cert->peer_dh_tmp != NULL)
- dh_srvr=s->session->sess_cert->peer_dh_tmp;
- else
- {
- /* we get them from the cert */
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
- goto err;
- }
-
- /* generate a new random key */
- if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
- goto err;
- }
- if (!DH_generate_key(dh_clnt))
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
- DH_free(dh_clnt);
- goto err;
- }
-
- /* use the 'p' output buffer for the DH key, but
- * make sure to clear it out afterwards */
-
- n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
-
- if (n <= 0)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
- DH_free(dh_clnt);
- goto err;
- }
-
- /* generate master key from the result */
- s->session->master_key_length=
- s->method->ssl3_enc->generate_master_secret(s,
- s->session->master_key,p,n);
- /* clean up */
- memset(p,0,n);
-
- /* send off the data */
- n=BN_num_bytes(dh_clnt->pub_key);
- s2n(n,p);
- BN_bn2bin(dh_clnt->pub_key,p);
- n+=2;
-
- DH_free(dh_clnt);
-
- /* perhaps clean things up a bit EAY EAY EAY EAY*/
- }
-#endif
-
-#ifndef OPENSSL_NO_ECDH
- else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
- {
- const EC_GROUP *srvr_group = NULL;
- EC_KEY *tkey;
- int ecdh_clnt_cert = 0;
- int field_size = 0;
-
- if (s->session->sess_cert == NULL)
- {
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
- goto err;
- }
-
- /* Did we send out the client's
- * ECDH share for use in premaster
- * computation as part of client certificate?
- * If so, set ecdh_clnt_cert to 1.
- */
- if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
- {
- /* XXX: For now, we do not support client
- * authentication using ECDH certificates.
- * To add such support, one needs to add
- * code that checks for appropriate
- * conditions and sets ecdh_clnt_cert to 1.
- * For example, the cert have an ECC
- * key on the same curve as the server's
- * and the key should be authorized for
- * key agreement.
- *
- * One also needs to add code in ssl3_connect
- * to skip sending the certificate verify
- * message.
- *
- * if ((s->cert->key->privatekey != NULL) &&
- * (s->cert->key->privatekey->type ==
- * EVP_PKEY_EC) && ...)
- * ecdh_clnt_cert = 1;
- */
- }
-
- if (s->session->sess_cert->peer_ecdh_tmp != NULL)
- {
- tkey = s->session->sess_cert->peer_ecdh_tmp;
- }
- else
- {
- /* Get the Server Public Key from Cert */
- srvr_pub_pkey = X509_get_pubkey(s->session-> \
- sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
- if ((srvr_pub_pkey == NULL) ||
- (srvr_pub_pkey->type != EVP_PKEY_EC) ||
- (srvr_pub_pkey->pkey.ec == NULL))
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
-
- tkey = srvr_pub_pkey->pkey.ec;
- }
-
- srvr_group = EC_KEY_get0_group(tkey);
- srvr_ecpoint = EC_KEY_get0_public_key(tkey);
-
- if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
-
- if ((clnt_ecdh=EC_KEY_new()) == NULL)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
- goto err;
- }
- if (ecdh_clnt_cert)
- {
- /* Reuse key info from our certificate
- * We only need our private key to perform
- * the ECDH computation.
- */
- const BIGNUM *priv_key;
- tkey = s->cert->key->privatekey->pkey.ec;
- priv_key = EC_KEY_get0_private_key(tkey);
- if (priv_key == NULL)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
- goto err;
- }
- }
- else
- {
- /* Generate a new ECDH key pair */
- if (!(EC_KEY_generate_key(clnt_ecdh)))
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
- goto err;
- }
- }
-
- /* use the 'p' output buffer for the ECDH key, but
- * make sure to clear it out afterwards
- */
-
- field_size = EC_GROUP_get_degree(srvr_group);
- if (field_size <= 0)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_ECDH_LIB);
- goto err;
- }
- n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
- if (n <= 0)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_ECDH_LIB);
- goto err;
- }
-
- /* generate master key from the result */
- s->session->master_key_length = s->method->ssl3_enc \
- -> generate_master_secret(s,
- s->session->master_key,
- p, n);
-
- memset(p, 0, n); /* clean up */
-
- if (ecdh_clnt_cert)
- {
- /* Send empty client key exch message */
- n = 0;
- }
- else
- {
- /* First check the size of encoding and
- * allocate memory accordingly.
- */
- encoded_pt_len =
- EC_POINT_point2oct(srvr_group,
- EC_KEY_get0_public_key(clnt_ecdh),
- POINT_CONVERSION_UNCOMPRESSED,
- NULL, 0, NULL);
-
- encodedPoint = (unsigned char *)
- OPENSSL_malloc(encoded_pt_len *
- sizeof(unsigned char));
- bn_ctx = BN_CTX_new();
- if ((encodedPoint == NULL) ||
- (bn_ctx == NULL))
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- /* Encode the public key */
- n = EC_POINT_point2oct(srvr_group,
- EC_KEY_get0_public_key(clnt_ecdh),
- POINT_CONVERSION_UNCOMPRESSED,
- encodedPoint, encoded_pt_len, bn_ctx);
-
- *p = n; /* length of encoded point */
- /* Encoded point will be copied here */
- p += 1;
- /* copy the point */
- memcpy((unsigned char *)p, encodedPoint, n);
- /* increment n to account for length field */
- n += 1;
- }
-
- /* Free allocated memory */
- BN_CTX_free(bn_ctx);
- if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
- if (clnt_ecdh != NULL)
- EC_KEY_free(clnt_ecdh);
- EVP_PKEY_free(srvr_pub_pkey);
- }
-#endif /* !OPENSSL_NO_ECDH */
- else if (alg_k & SSL_kGOST)
- {
- /* GOST key exchange message creation */
- EVP_PKEY_CTX *pkey_ctx;
- X509 *peer_cert;
- size_t msglen;
- unsigned int md_len;
- int keytype;
- unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
- EVP_MD_CTX *ukm_hash;
- EVP_PKEY *pub_key;
-
- /* Get server sertificate PKEY and create ctx from it */
- peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
- if (!peer_cert)
- peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
- if (!peer_cert) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
- goto err;
- }
-
- pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
- /* If we have send a certificate, and certificate key
-
- * parameters match those of server certificate, use
- * certificate key for key exchange
- */
-
- /* Otherwise, generate ephemeral key pair */
-
- EVP_PKEY_encrypt_init(pkey_ctx);
- /* Generate session key */
- RAND_bytes(premaster_secret,32);
- /* If we have client certificate, use its secret as peer key */
- if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
- if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
- /* If there was an error - just ignore it. Ephemeral key
- * would be used
- */
- ERR_clear_error();
- }
- }
- /* Compute shared IV and store it in algorithm-specific
- * context data */
- ukm_hash = EVP_MD_CTX_create();
- EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
- EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
- EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
- EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
- EVP_MD_CTX_destroy(ukm_hash);
- if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
- 8,shared_ukm)<0) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_LIBRARY_BUG);
- goto err;
- }
- /* Make GOST keytransport blob message */
- /*Encapsulate it into sequence */
- *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
- msglen=255;
- if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_LIBRARY_BUG);
- goto err;
- }
- if (msglen >= 0x80)
- {
- *(p++)=0x81;
- *(p++)= msglen & 0xff;
- n=msglen+3;
- }
- else
- {
- *(p++)= msglen & 0xff;
- n=msglen+2;
- }
- memcpy(p, tmp, msglen);
- /* Check if pubkey from client certificate was used */
- if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
- {
- /* Set flag "skip certificate verify" */
- s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
- }
- EVP_PKEY_CTX_free(pkey_ctx);
- s->session->master_key_length=
- s->method->ssl3_enc->generate_master_secret(s,
- s->session->master_key,premaster_secret,32);
- EVP_PKEY_free(pub_key);
-
- }
-#ifndef OPENSSL_NO_SRP
- else if (alg_k & SSL_kSRP)
- {
- if (s->srp_ctx.A != NULL)
- {
- /* send off the data */
- n=BN_num_bytes(s->srp_ctx.A);
- s2n(n,p);
- BN_bn2bin(s->srp_ctx.A,p);
- n+=2;
- }
- else
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
- goto err;
- }
- if (s->session->srp_username != NULL)
- OPENSSL_free(s->session->srp_username);
- s->session->srp_username = BUF_strdup(s->srp_ctx.login);
- if (s->session->srp_username == NULL)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
- goto err;
- }
- }
-#endif
-#ifndef OPENSSL_NO_PSK
- else if (alg_k & SSL_kPSK)
- {
- /* The callback needs PSK_MAX_IDENTITY_LEN + 1 bytes
- * to return a \0-terminated identity. The last byte
- * is for us for simulating strnlen. */
- char identity[PSK_MAX_IDENTITY_LEN + 2];
- size_t identity_len;
- unsigned char *t = NULL;
- unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
- unsigned int pre_ms_len = 0, psk_len = 0;
- int psk_err = 1;
-
- n = 0;
- if (s->psk_client_callback == NULL)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_PSK_NO_CLIENT_CB);
- goto err;
- }
-
- memset(identity, 0, sizeof(identity));
- psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
- identity, sizeof(identity) - 1,
- psk_or_pre_ms, sizeof(psk_or_pre_ms));
- if (psk_len > PSK_MAX_PSK_LEN)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto psk_err;
- }
- else if (psk_len == 0)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_PSK_IDENTITY_NOT_FOUND);
- goto psk_err;
- }
- identity[PSK_MAX_IDENTITY_LEN + 1] = '\0';
- identity_len = strlen(identity);
- if (identity_len > PSK_MAX_IDENTITY_LEN)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto psk_err;
- }
- /* create PSK pre_master_secret */
- pre_ms_len = 2+psk_len+2+psk_len;
- t = psk_or_pre_ms;
- memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
- s2n(psk_len, t);
- memset(t, 0, psk_len);
- t+=psk_len;
- s2n(psk_len, t);
-
- if (s->session->psk_identity_hint != NULL)
- OPENSSL_free(s->session->psk_identity_hint);
- s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
- if (s->ctx->psk_identity_hint != NULL &&
- s->session->psk_identity_hint == NULL)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_MALLOC_FAILURE);
- goto psk_err;
- }
-
- if (s->session->psk_identity != NULL)
- OPENSSL_free(s->session->psk_identity);
- s->session->psk_identity = BUF_strdup(identity);
- if (s->session->psk_identity == NULL)
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_MALLOC_FAILURE);
- goto psk_err;
- }
-
- s->session->master_key_length =
- s->method->ssl3_enc->generate_master_secret(s,
- s->session->master_key,
- psk_or_pre_ms, pre_ms_len);
- s2n(identity_len, p);
- memcpy(p, identity, identity_len);
- n = 2 + identity_len;
- psk_err = 0;
- psk_err:
- OPENSSL_cleanse(identity, sizeof(identity));
- OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
- if (psk_err != 0)
- {
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
- goto err;
- }
- }
-#endif
- else
- {
- ssl3_send_alert(s, SSL3_AL_FATAL,
- SSL_AD_HANDSHAKE_FAILURE);
- SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
-
- *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
- l2n3(n,d);
-
- s->state=SSL3_ST_CW_KEY_EXCH_B;
- /* number of bytes to write */
- s->init_num=n+4;
- s->init_off=0;
- }
-
- /* SSL3_ST_CW_KEY_EXCH_B */
- return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
-err:
-#ifndef OPENSSL_NO_ECDH
- BN_CTX_free(bn_ctx);
- if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
- if (clnt_ecdh != NULL)
- EC_KEY_free(clnt_ecdh);
- EVP_PKEY_free(srvr_pub_pkey);
-#endif
- return(-1);
- }
-
-int ssl3_send_client_verify(SSL *s)
- {
- unsigned char *p,*d;
- unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
- EVP_PKEY *pkey;
- EVP_PKEY_CTX *pctx=NULL;
- EVP_MD_CTX mctx;
- unsigned u=0;
- unsigned long n;
- int j;
-
- EVP_MD_CTX_init(&mctx);
-
- if (s->state == SSL3_ST_CW_CERT_VRFY_A)
- {
- d=(unsigned char *)s->init_buf->data;
- p= &(d[4]);
- pkey=s->cert->key->privatekey;
-/* Create context from key and test if sha1 is allowed as digest */
- pctx = EVP_PKEY_CTX_new(pkey,NULL);
- EVP_PKEY_sign_init(pctx);
- if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
- {
- if (TLS1_get_version(s) < TLS1_2_VERSION)
- s->method->ssl3_enc->cert_verify_mac(s,
- NID_sha1,
- &(data[MD5_DIGEST_LENGTH]));
- }
- else
- {
- ERR_clear_error();
- }
- /* For TLS v1.2 send signature algorithm and signature
- * using agreed digest and cached handshake records.
- */
- if (TLS1_get_version(s) >= TLS1_2_VERSION)
- {
- long hdatalen = 0;
- void *hdata;
- const EVP_MD *md = s->cert->key->digest;
- hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
- &hdata);
- if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
- p += 2;
-#ifdef SSL_DEBUG
- fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
- EVP_MD_name(md));
-#endif
- if (!EVP_SignInit_ex(&mctx, md, NULL)
- || !EVP_SignUpdate(&mctx, hdata, hdatalen)
- || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
- ERR_R_EVP_LIB);
- goto err;
- }
- s2n(u,p);
- n = u + 4;
- if (!ssl3_digest_cached_records(s))
- goto err;
- }
- else
-#ifndef OPENSSL_NO_RSA
- if (pkey->type == EVP_PKEY_RSA)
- {
- s->method->ssl3_enc->cert_verify_mac(s,
- NID_md5,
- &(data[0]));
- if (RSA_sign(NID_md5_sha1, data,
- MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
- &(p[2]), &u, pkey->pkey.rsa) <= 0 )
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
- goto err;
- }
- s2n(u,p);
- n=u+2;
- }
- else
-#endif
-#ifndef OPENSSL_NO_DSA
- if (pkey->type == EVP_PKEY_DSA)
- {
- if (!DSA_sign(pkey->save_type,
- &(data[MD5_DIGEST_LENGTH]),
- SHA_DIGEST_LENGTH,&(p[2]),
- (unsigned int *)&j,pkey->pkey.dsa))
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
- goto err;
- }
- s2n(j,p);
- n=j+2;
- }
- else
-#endif
-#ifndef OPENSSL_NO_ECDSA
- if (pkey->type == EVP_PKEY_EC)
- {
- if (!ECDSA_sign(pkey->save_type,
- &(data[MD5_DIGEST_LENGTH]),
- SHA_DIGEST_LENGTH,&(p[2]),
- (unsigned int *)&j,pkey->pkey.ec))
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
- ERR_R_ECDSA_LIB);
- goto err;
- }
- s2n(j,p);
- n=j+2;
- }
- else
-#endif
- if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
- {
- unsigned char signbuf[64];
- int i;
- size_t sigsize=64;
- s->method->ssl3_enc->cert_verify_mac(s,
- NID_id_GostR3411_94,
- data);
- if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
- for (i=63,j=0; i>=0; j++, i--) {
- p[2+j]=signbuf[i];
- }
- s2n(j,p);
- n=j+2;
- }
- else
- {
- SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
- goto err;
- }
- *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
- l2n3(n,d);
-
- s->state=SSL3_ST_CW_CERT_VRFY_B;
- s->init_num=(int)n+4;
- s->init_off=0;
- }
- EVP_MD_CTX_cleanup(&mctx);
- EVP_PKEY_CTX_free(pctx);
- return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
-err:
- EVP_MD_CTX_cleanup(&mctx);
- EVP_PKEY_CTX_free(pctx);
- return(-1);
- }
-
-int ssl3_send_client_certificate(SSL *s)
- {
- X509 *x509=NULL;
- EVP_PKEY *pkey=NULL;
- int i;
- unsigned long l;
-
- if (s->state == SSL3_ST_CW_CERT_A)
- {
- if ((s->cert == NULL) ||
- (s->cert->key->x509 == NULL) ||
- (s->cert->key->privatekey == NULL))
- s->state=SSL3_ST_CW_CERT_B;
- else
- s->state=SSL3_ST_CW_CERT_C;
- }
-
- /* We need to get a client cert */
- if (s->state == SSL3_ST_CW_CERT_B)
- {
- /* If we get an error, we need to
- * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
- * We then get retied later */
- i=0;
- i = ssl_do_client_cert_cb(s, &x509, &pkey);
- if (i < 0)
- {
- s->rwstate=SSL_X509_LOOKUP;
- return(-1);
- }
- s->rwstate=SSL_NOTHING;
- if ((i == 1) && (pkey != NULL) && (x509 != NULL))
- {
- s->state=SSL3_ST_CW_CERT_B;
- if ( !SSL_use_certificate(s,x509) ||
- !SSL_use_PrivateKey(s,pkey))
- i=0;
- }
- else if (i == 1)
- {
- i=0;
- SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
- }
-
- if (x509 != NULL) X509_free(x509);
- if (pkey != NULL) EVP_PKEY_free(pkey);
- if (i == 0)
- {
- if (s->version == SSL3_VERSION)
- {
- s->s3->tmp.cert_req=0;
- ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
- return(1);
- }
- else
- {
- s->s3->tmp.cert_req=2;
- }
- }
-
- /* Ok, we have a cert */
- s->state=SSL3_ST_CW_CERT_C;
- }
-
- if (s->state == SSL3_ST_CW_CERT_C)
- {
- s->state=SSL3_ST_CW_CERT_D;
- l=ssl3_output_cert_chain(s,
- (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
- s->init_num=(int)l;
- s->init_off=0;
- }
- /* SSL3_ST_CW_CERT_D */
- return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
- }
-
-#define has_bits(i,m) (((i)&(m)) == (m))
-
-int ssl3_check_cert_and_algorithm(SSL *s)
- {
- int i,idx;
- long alg_k,alg_a;
- EVP_PKEY *pkey=NULL;
- SESS_CERT *sc;
-#ifndef OPENSSL_NO_RSA
- RSA *rsa;
-#endif
-#ifndef OPENSSL_NO_DH
- DH *dh;
-#endif
-
- alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
- alg_a=s->s3->tmp.new_cipher->algorithm_auth;
-
- /* we don't have a certificate */
- if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
- return(1);
-
- sc=s->session->sess_cert;
- if (sc == NULL)
- {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
- goto err;
- }
-
-#ifndef OPENSSL_NO_RSA
- rsa=s->session->sess_cert->peer_rsa_tmp;
-#endif
-#ifndef OPENSSL_NO_DH
- dh=s->session->sess_cert->peer_dh_tmp;
-#endif
-
- /* This is the passed certificate */
-
- idx=sc->peer_cert_type;
-#ifndef OPENSSL_NO_ECDH
- if (idx == SSL_PKEY_ECC)
- {
- if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
- s) == 0)
- { /* check failed */
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
- goto f_err;
- }
- else
- {
- return 1;
- }
- }
-#endif
- pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
- i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
- EVP_PKEY_free(pkey);
-
-
- /* Check that we have a certificate if we require one */
- if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
- {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
- goto f_err;
- }
-#ifndef OPENSSL_NO_DSA
- else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
- {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
- goto f_err;
- }
-#endif
-#ifndef OPENSSL_NO_RSA
- if ((alg_k & SSL_kRSA) &&
- !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
- {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
- goto f_err;
- }
-#endif
-#ifndef OPENSSL_NO_DH
- if ((alg_k & SSL_kEDH) &&
- !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
- {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
- goto f_err;
- }
- else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
- {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
- goto f_err;
- }
-#ifndef OPENSSL_NO_DSA
- else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
- {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
- goto f_err;
- }
-#endif
-#endif
-
- if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
- {
-#ifndef OPENSSL_NO_RSA
- if (alg_k & SSL_kRSA)
- {
- if (rsa == NULL
- || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
- {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
- goto f_err;
- }
- }
- else
-#endif
-#ifndef OPENSSL_NO_DH
- if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
- {
- if (dh == NULL
- || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
- {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
- goto f_err;
- }
- }
- else
-#endif
- {
- SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
- goto f_err;
- }
- }
- return(1);
-f_err:
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
-err:
- return(0);
- }
-
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
-int ssl3_send_next_proto(SSL *s)
- {
- unsigned int len, padding_len;
- unsigned char *d;
-
- if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
- {
- len = s->next_proto_negotiated_len;
- padding_len = 32 - ((len + 2) % 32);
- d = (unsigned char *)s->init_buf->data;
- d[4] = len;
- memcpy(d + 5, s->next_proto_negotiated, len);
- d[5 + len] = padding_len;
- memset(d + 6 + len, 0, padding_len);
- *(d++)=SSL3_MT_NEXT_PROTO;
- l2n3(2 + len + padding_len, d);
- s->state = SSL3_ST_CW_NEXT_PROTO_B;
- s->init_num = 4 + 2 + len + padding_len;
- s->init_off = 0;
- }
-
- return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
-}
-#endif /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NEXTPROTONEG */
-
-/* Check to see if handshake is full or resumed. Usually this is just a
- * case of checking to see if a cache hit has occurred. In the case of
- * session tickets we have to check the next message to be sure.
- */
-
-#ifndef OPENSSL_NO_TLSEXT
-int ssl3_check_finished(SSL *s)
- {
- int ok;
- long n;
- /* If we have no ticket it cannot be a resumed session. */
- if (!s->session->tlsext_tick)
- return 1;
- /* this function is called when we really expect a Certificate
- * message, so permit appropriate message length */
- n=s->method->ssl_get_message(s,
- SSL3_ST_CR_CERT_A,
- SSL3_ST_CR_CERT_B,
- -1,
- s->max_cert_list,
- &ok);
- if (!ok) return((int)n);
- s->s3->tmp.reuse_message = 1;
- if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
- || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
- return 2;
-
- return 1;
- }
-#endif
-
-int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
- {
- int i = 0;
-#ifndef OPENSSL_NO_ENGINE
- if (s->ctx->client_cert_engine)
- {
- i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
- SSL_get_client_CA_list(s),
- px509, ppkey, NULL, NULL, NULL);
- if (i != 0)
- return i;
- }
-#endif
- if (s->ctx->client_cert_cb)
- i = s->ctx->client_cert_cb(s,px509,ppkey);
- return i;
- }
projects / cassiopeia.git / blobdiff