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-rw-r--r--openssl/ssl/d1_srvr.c1563
1 files changed, 0 insertions, 1563 deletions
diff --git a/openssl/ssl/d1_srvr.c b/openssl/ssl/d1_srvr.c
deleted file mode 100644
index a6a4c87e..00000000
--- a/openssl/ssl/d1_srvr.c
+++ /dev/null
@@ -1,1563 +0,0 @@
-/* ssl/d1_srvr.c */
-/*
- * DTLS implementation written by Nagendra Modadugu
- * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
- */
-/* ====================================================================
- * Copyright (c) 1999-2007 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 (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.]
- */
-
-#include <stdio.h>
-#include "ssl_locl.h"
-#include <openssl/buffer.h>
-#include <openssl/rand.h>
-#include <openssl/objects.h>
-#include <openssl/evp.h>
-#include <openssl/x509.h>
-#include <openssl/md5.h>
-#include <openssl/bn.h>
-#ifndef OPENSSL_NO_DH
-#include <openssl/dh.h>
-#endif
-
-static const SSL_METHOD *dtls1_get_server_method(int ver);
-static int dtls1_send_hello_verify_request(SSL *s);
-
-static const SSL_METHOD *dtls1_get_server_method(int ver)
- {
- if (ver == DTLS1_VERSION)
- return(DTLSv1_server_method());
- else
- return(NULL);
- }
-
-IMPLEMENT_dtls1_meth_func(DTLSv1_server_method,
- dtls1_accept,
- ssl_undefined_function,
- dtls1_get_server_method)
-
-int dtls1_accept(SSL *s)
- {
- BUF_MEM *buf;
- unsigned long Time=(unsigned long)time(NULL);
- void (*cb)(const SSL *ssl,int type,int val)=NULL;
- unsigned long alg_k;
- int ret= -1;
- int new_state,state,skip=0;
- int listen;
-
- 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;
-
- listen = s->d1->listen;
-
- /* init things to blank */
- s->in_handshake++;
- if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
-
- s->d1->listen = listen;
-
- if (s->cert == NULL)
- {
- SSLerr(SSL_F_DTLS1_ACCEPT,SSL_R_NO_CERTIFICATE_SET);
- return(-1);
- }
-
- for (;;)
- {
- state=s->state;
-
- switch (s->state)
- {
- case SSL_ST_RENEGOTIATE:
- s->new_session=1;
- /* s->state=SSL_ST_ACCEPT; */
-
- case SSL_ST_BEFORE:
- case SSL_ST_ACCEPT:
- case SSL_ST_BEFORE|SSL_ST_ACCEPT:
- case SSL_ST_OK|SSL_ST_ACCEPT:
-
- s->server=1;
- if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
-
- if ((s->version & 0xff00) != (DTLS1_VERSION & 0xff00))
- {
- SSLerr(SSL_F_DTLS1_ACCEPT, ERR_R_INTERNAL_ERROR);
- return -1;
- }
- s->type=SSL_ST_ACCEPT;
-
- 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;
- }
-
- if (!ssl3_setup_buffers(s))
- {
- ret= -1;
- goto end;
- }
-
- s->init_num=0;
-
- if (s->state != SSL_ST_RENEGOTIATE)
- {
- /* Ok, we now need to push on a buffering BIO so that
- * the output is sent in a way that TCP likes :-)
- */
- if (!ssl_init_wbio_buffer(s,1)) { ret= -1; goto end; }
-
- ssl3_init_finished_mac(s);
- s->state=SSL3_ST_SR_CLNT_HELLO_A;
- s->ctx->stats.sess_accept++;
- }
- else
- {
- /* s->state == SSL_ST_RENEGOTIATE,
- * we will just send a HelloRequest */
- s->ctx->stats.sess_accept_renegotiate++;
- s->state=SSL3_ST_SW_HELLO_REQ_A;
- }
-
- break;
-
- case SSL3_ST_SW_HELLO_REQ_A:
- case SSL3_ST_SW_HELLO_REQ_B:
-
- s->shutdown=0;
- dtls1_start_timer(s);
- ret=dtls1_send_hello_request(s);
- if (ret <= 0) goto end;
- s->s3->tmp.next_state=SSL3_ST_SW_HELLO_REQ_C;
- s->state=SSL3_ST_SW_FLUSH;
- s->init_num=0;
-
- ssl3_init_finished_mac(s);
- break;
-
- case SSL3_ST_SW_HELLO_REQ_C:
- s->state=SSL_ST_OK;
- break;
-
- case SSL3_ST_SR_CLNT_HELLO_A:
- case SSL3_ST_SR_CLNT_HELLO_B:
- case SSL3_ST_SR_CLNT_HELLO_C:
-
- s->shutdown=0;
- ret=ssl3_get_client_hello(s);
- if (ret <= 0) goto end;
- dtls1_stop_timer(s);
-
- if (ret == 1 && (SSL_get_options(s) & SSL_OP_COOKIE_EXCHANGE))
- s->state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A;
- else
- s->state = SSL3_ST_SW_SRVR_HELLO_A;
-
- s->init_num=0;
-
- /* Reflect ClientHello sequence to remain stateless while listening */
- if (listen)
- {
- memcpy(s->s3->write_sequence, s->s3->read_sequence, sizeof(s->s3->write_sequence));
- }
-
- /* If we're just listening, stop here */
- if (listen && s->state == SSL3_ST_SW_SRVR_HELLO_A)
- {
- ret = 2;
- s->d1->listen = 0;
- /* Set expected sequence numbers
- * to continue the handshake.
- */
- s->d1->handshake_read_seq = 2;
- s->d1->handshake_write_seq = 1;
- s->d1->next_handshake_write_seq = 1;
- goto end;
- }
-
- break;
-
- case DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A:
- case DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B:
-
- ret = dtls1_send_hello_verify_request(s);
- if ( ret <= 0) goto end;
- s->state=SSL3_ST_SW_FLUSH;
- s->s3->tmp.next_state=SSL3_ST_SR_CLNT_HELLO_A;
-
- /* HelloVerifyRequest resets Finished MAC */
- if (s->version != DTLS1_BAD_VER)
- ssl3_init_finished_mac(s);
- break;
-
- case SSL3_ST_SW_SRVR_HELLO_A:
- case SSL3_ST_SW_SRVR_HELLO_B:
- s->new_session = 2;
- dtls1_start_timer(s);
- ret=dtls1_send_server_hello(s);
- if (ret <= 0) goto end;
-
-#ifndef OPENSSL_NO_TLSEXT
- if (s->hit)
- {
- if (s->tlsext_ticket_expected)
- s->state=SSL3_ST_SW_SESSION_TICKET_A;
- else
- s->state=SSL3_ST_SW_CHANGE_A;
- }
-#else
- if (s->hit)
- s->state=SSL3_ST_SW_CHANGE_A;
-#endif
- else
- s->state=SSL3_ST_SW_CERT_A;
- s->init_num=0;
- break;
-
- case SSL3_ST_SW_CERT_A:
- case SSL3_ST_SW_CERT_B:
- /* Check if it is anon DH or normal PSK */
- if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
- && !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
- {
- dtls1_start_timer(s);
- ret=dtls1_send_server_certificate(s);
- if (ret <= 0) goto end;
-#ifndef OPENSSL_NO_TLSEXT
- if (s->tlsext_status_expected)
- s->state=SSL3_ST_SW_CERT_STATUS_A;
- else
- s->state=SSL3_ST_SW_KEY_EXCH_A;
- }
- else
- {
- skip = 1;
- s->state=SSL3_ST_SW_KEY_EXCH_A;
- }
-#else
- }
- else
- skip=1;
-
- s->state=SSL3_ST_SW_KEY_EXCH_A;
-#endif
- s->init_num=0;
- break;
-
- case SSL3_ST_SW_KEY_EXCH_A:
- case SSL3_ST_SW_KEY_EXCH_B:
- alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
-
- /* clear this, it may get reset by
- * send_server_key_exchange */
- if ((s->options & SSL_OP_EPHEMERAL_RSA)
-#ifndef OPENSSL_NO_KRB5
- && !(alg_k & SSL_kKRB5)
-#endif /* OPENSSL_NO_KRB5 */
- )
- /* option SSL_OP_EPHEMERAL_RSA sends temporary RSA key
- * even when forbidden by protocol specs
- * (handshake may fail as clients are not required to
- * be able to handle this) */
- s->s3->tmp.use_rsa_tmp=1;
- else
- s->s3->tmp.use_rsa_tmp=0;
-
- /* only send if a DH key exchange or
- * RSA but we have a sign only certificate */
- if (s->s3->tmp.use_rsa_tmp
- /* PSK: send ServerKeyExchange if PSK identity
- * hint if provided */
-#ifndef OPENSSL_NO_PSK
- || ((alg_k & SSL_kPSK) && s->ctx->psk_identity_hint)
-#endif
- || (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
- || (alg_k & SSL_kEECDH)
- || ((alg_k & SSL_kRSA)
- && (s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL
- || (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher)
- && EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)
- )
- )
- )
- )
- {
- dtls1_start_timer(s);
- ret=dtls1_send_server_key_exchange(s);
- if (ret <= 0) goto end;
- }
- else
- skip=1;
-
- s->state=SSL3_ST_SW_CERT_REQ_A;
- s->init_num=0;
- break;
-
- case SSL3_ST_SW_CERT_REQ_A:
- case SSL3_ST_SW_CERT_REQ_B:
- if (/* don't request cert unless asked for it: */
- !(s->verify_mode & SSL_VERIFY_PEER) ||
- /* if SSL_VERIFY_CLIENT_ONCE is set,
- * don't request cert during re-negotiation: */
- ((s->session->peer != NULL) &&
- (s->verify_mode & SSL_VERIFY_CLIENT_ONCE)) ||
- /* never request cert in anonymous ciphersuites
- * (see section "Certificate request" in SSL 3 drafts
- * and in RFC 2246): */
- ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
- /* ... except when the application insists on verification
- * (against the specs, but s3_clnt.c accepts this for SSL 3) */
- !(s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT)) ||
- /* never request cert in Kerberos ciphersuites */
- (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)
- /* With normal PSK Certificates and
- * Certificate Requests are omitted */
- || (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
- {
- /* no cert request */
- skip=1;
- s->s3->tmp.cert_request=0;
- s->state=SSL3_ST_SW_SRVR_DONE_A;
- }
- else
- {
- s->s3->tmp.cert_request=1;
- dtls1_start_timer(s);
- ret=dtls1_send_certificate_request(s);
- if (ret <= 0) goto end;
-#ifndef NETSCAPE_HANG_BUG
- s->state=SSL3_ST_SW_SRVR_DONE_A;
-#else
- s->state=SSL3_ST_SW_FLUSH;
- s->s3->tmp.next_state=SSL3_ST_SR_CERT_A;
-#endif
- s->init_num=0;
- }
- break;
-
- case SSL3_ST_SW_SRVR_DONE_A:
- case SSL3_ST_SW_SRVR_DONE_B:
- dtls1_start_timer(s);
- ret=dtls1_send_server_done(s);
- if (ret <= 0) goto end;
- s->s3->tmp.next_state=SSL3_ST_SR_CERT_A;
- s->state=SSL3_ST_SW_FLUSH;
- s->init_num=0;
- break;
-
- case SSL3_ST_SW_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 SSL3_ST_SR_CERT_A:
- case SSL3_ST_SR_CERT_B:
- /* Check for second client hello (MS SGC) */
- ret = ssl3_check_client_hello(s);
- if (ret <= 0)
- goto end;
- dtls1_stop_timer(s);
- if (ret == 2)
- s->state = SSL3_ST_SR_CLNT_HELLO_C;
- else {
- /* could be sent for a DH cert, even if we
- * have not asked for it :-) */
- ret=ssl3_get_client_certificate(s);
- if (ret <= 0) goto end;
- dtls1_stop_timer(s);
- s->init_num=0;
- s->state=SSL3_ST_SR_KEY_EXCH_A;
- }
- break;
-
- case SSL3_ST_SR_KEY_EXCH_A:
- case SSL3_ST_SR_KEY_EXCH_B:
- ret=ssl3_get_client_key_exchange(s);
- if (ret <= 0) goto end;
- dtls1_stop_timer(s);
- s->state=SSL3_ST_SR_CERT_VRFY_A;
- s->init_num=0;
-
- if (ret == 2)
- {
- /* For the ECDH ciphersuites when
- * the client sends its ECDH pub key in
- * a certificate, the CertificateVerify
- * message is not sent.
- */
- s->state=SSL3_ST_SR_FINISHED_A;
- s->init_num = 0;
- }
- else
- {
- s->state=SSL3_ST_SR_CERT_VRFY_A;
- s->init_num=0;
-
- /* We need to get hashes here so if there is
- * a client cert, it can be verified */
- s->method->ssl3_enc->cert_verify_mac(s,
- NID_md5,
- &(s->s3->tmp.cert_verify_md[0]));
- s->method->ssl3_enc->cert_verify_mac(s,
- NID_sha1,
- &(s->s3->tmp.cert_verify_md[MD5_DIGEST_LENGTH]));
- }
- break;
-
- case SSL3_ST_SR_CERT_VRFY_A:
- case SSL3_ST_SR_CERT_VRFY_B:
-
- s->d1->change_cipher_spec_ok = 1;
- /* we should decide if we expected this one */
- ret=ssl3_get_cert_verify(s);
- if (ret <= 0) goto end;
- dtls1_stop_timer(s);
-
- s->state=SSL3_ST_SR_FINISHED_A;
- s->init_num=0;
- break;
-
- case SSL3_ST_SR_FINISHED_A:
- case SSL3_ST_SR_FINISHED_B:
- s->d1->change_cipher_spec_ok = 1;
- ret=ssl3_get_finished(s,SSL3_ST_SR_FINISHED_A,
- SSL3_ST_SR_FINISHED_B);
- if (ret <= 0) goto end;
- dtls1_stop_timer(s);
- if (s->hit)
- s->state=SSL_ST_OK;
-#ifndef OPENSSL_NO_TLSEXT
- else if (s->tlsext_ticket_expected)
- s->state=SSL3_ST_SW_SESSION_TICKET_A;
-#endif
- else
- s->state=SSL3_ST_SW_CHANGE_A;
- s->init_num=0;
- break;
-
-#ifndef OPENSSL_NO_TLSEXT
- case SSL3_ST_SW_SESSION_TICKET_A:
- case SSL3_ST_SW_SESSION_TICKET_B:
- ret=dtls1_send_newsession_ticket(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_SW_CHANGE_A;
- s->init_num=0;
- break;
-
- case SSL3_ST_SW_CERT_STATUS_A:
- case SSL3_ST_SW_CERT_STATUS_B:
- ret=ssl3_send_cert_status(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_SW_KEY_EXCH_A;
- s->init_num=0;
- break;
-
-#endif
-
- case SSL3_ST_SW_CHANGE_A:
- case SSL3_ST_SW_CHANGE_B:
-
- s->session->cipher=s->s3->tmp.new_cipher;
- if (!s->method->ssl3_enc->setup_key_block(s))
- { ret= -1; goto end; }
-
- ret=dtls1_send_change_cipher_spec(s,
- SSL3_ST_SW_CHANGE_A,SSL3_ST_SW_CHANGE_B);
-
- if (ret <= 0) goto end;
- s->state=SSL3_ST_SW_FINISHED_A;
- s->init_num=0;
-
- if (!s->method->ssl3_enc->change_cipher_state(s,
- SSL3_CHANGE_CIPHER_SERVER_WRITE))
- {
- ret= -1;
- goto end;
- }
-
- dtls1_reset_seq_numbers(s, SSL3_CC_WRITE);
- break;
-
- case SSL3_ST_SW_FINISHED_A:
- case SSL3_ST_SW_FINISHED_B:
- ret=dtls1_send_finished(s,
- SSL3_ST_SW_FINISHED_A,SSL3_ST_SW_FINISHED_B,
- s->method->ssl3_enc->server_finished_label,
- s->method->ssl3_enc->server_finished_label_len);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_SW_FLUSH;
- if (s->hit)
- s->s3->tmp.next_state=SSL3_ST_SR_FINISHED_A;
- else
- s->s3->tmp.next_state=SSL_ST_OK;
- s->init_num=0;
- break;
-
- case SSL_ST_OK:
- /* clean a few things up */
- ssl3_cleanup_key_block(s);
-
-#if 0
- BUF_MEM_free(s->init_buf);
- s->init_buf=NULL;
-#endif
-
- /* remove buffering on output */
- ssl_free_wbio_buffer(s);
-
- s->init_num=0;
-
- if (s->new_session == 2) /* skipped if we just sent a HelloRequest */
- {
- /* actually not necessarily a 'new' session unless
- * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set */
-
- s->new_session=0;
-
- ssl_update_cache(s,SSL_SESS_CACHE_SERVER);
-
- s->ctx->stats.sess_accept_good++;
- /* s->server=1; */
- s->handshake_func=dtls1_accept;
-
- if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
- }
-
- ret = 1;
-
- /* done handshaking, next message is client hello */
- s->d1->handshake_read_seq = 0;
- /* next message is server hello */
- s->d1->handshake_write_seq = 0;
- s->d1->next_handshake_write_seq = 0;
- goto end;
- /* break; */
-
- default:
- SSLerr(SSL_F_DTLS1_ACCEPT,SSL_R_UNKNOWN_STATE);
- ret= -1;
- goto end;
- /* break; */
- }
-
- 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_ACCEPT_LOOP,1);
- s->state=new_state;
- }
- }
- skip=0;
- }
-end:
- /* BIO_flush(s->wbio); */
-
- s->in_handshake--;
- if (cb != NULL)
- cb(s,SSL_CB_ACCEPT_EXIT,ret);
- return(ret);
- }
-
-int dtls1_send_hello_request(SSL *s)
- {
- unsigned char *p;
-
- if (s->state == SSL3_ST_SW_HELLO_REQ_A)
- {
- p=(unsigned char *)s->init_buf->data;
- p = dtls1_set_message_header(s, p, SSL3_MT_HELLO_REQUEST, 0, 0, 0);
-
- s->state=SSL3_ST_SW_HELLO_REQ_B;
- /* number of bytes to write */
- s->init_num=DTLS1_HM_HEADER_LENGTH;
- s->init_off=0;
-
- /* no need to buffer this message, since there are no retransmit
- * requests for it */
- }
-
- /* SSL3_ST_SW_HELLO_REQ_B */
- return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
- }
-
-int dtls1_send_hello_verify_request(SSL *s)
- {
- unsigned int msg_len;
- unsigned char *msg, *buf, *p;
-
- if (s->state == DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A)
- {
- buf = (unsigned char *)s->init_buf->data;
-
- msg = p = &(buf[DTLS1_HM_HEADER_LENGTH]);
- *(p++) = s->version >> 8;
- *(p++) = s->version & 0xFF;
-
- if (s->ctx->app_gen_cookie_cb == NULL ||
- s->ctx->app_gen_cookie_cb(s, s->d1->cookie,
- &(s->d1->cookie_len)) == 0)
- {
- SSLerr(SSL_F_DTLS1_SEND_HELLO_VERIFY_REQUEST,ERR_R_INTERNAL_ERROR);
- return 0;
- }
-
- *(p++) = (unsigned char) s->d1->cookie_len;
- memcpy(p, s->d1->cookie, s->d1->cookie_len);
- p += s->d1->cookie_len;
- msg_len = p - msg;
-
- dtls1_set_message_header(s, buf,
- DTLS1_MT_HELLO_VERIFY_REQUEST, msg_len, 0, msg_len);
-
- s->state=DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B;
- /* number of bytes to write */
- s->init_num=p-buf;
- s->init_off=0;
- }
-
- /* s->state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B */
- return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
- }
-
-int dtls1_send_server_hello(SSL *s)
- {
- unsigned char *buf;
- unsigned char *p,*d;
- int i;
- unsigned int sl;
- unsigned long l,Time;
-
- if (s->state == SSL3_ST_SW_SRVR_HELLO_A)
- {
- buf=(unsigned char *)s->init_buf->data;
- p=s->s3->server_random;
- Time=(unsigned long)time(NULL); /* Time */
- l2n(Time,p);
- RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time));
- /* Do the message type and length last */
- d=p= &(buf[DTLS1_HM_HEADER_LENGTH]);
-
- *(p++)=s->version>>8;
- *(p++)=s->version&0xff;
-
- /* Random stuff */
- memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
- p+=SSL3_RANDOM_SIZE;
-
- /* now in theory we have 3 options to sending back the
- * session id. If it is a re-use, we send back the
- * old session-id, if it is a new session, we send
- * back the new session-id or we send back a 0 length
- * session-id if we want it to be single use.
- * Currently I will not implement the '0' length session-id
- * 12-Jan-98 - I'll now support the '0' length stuff.
- */
- if (!(s->ctx->session_cache_mode & SSL_SESS_CACHE_SERVER))
- s->session->session_id_length=0;
-
- sl=s->session->session_id_length;
- if (sl > sizeof s->session->session_id)
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
- return -1;
- }
- *(p++)=sl;
- memcpy(p,s->session->session_id,sl);
- p+=sl;
-
- /* put the cipher */
- if (s->s3->tmp.new_cipher == NULL)
- return -1;
- i=ssl3_put_cipher_by_char(s->s3->tmp.new_cipher,p);
- p+=i;
-
- /* put the compression method */
-#ifdef OPENSSL_NO_COMP
- *(p++)=0;
-#else
- if (s->s3->tmp.new_compression == NULL)
- *(p++)=0;
- else
- *(p++)=s->s3->tmp.new_compression->id;
-#endif
-
-#ifndef OPENSSL_NO_TLSEXT
- if ((p = ssl_add_serverhello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_HELLO,ERR_R_INTERNAL_ERROR);
- return -1;
- }
-#endif
-
- /* do the header */
- l=(p-d);
- d=buf;
-
- d = dtls1_set_message_header(s, d, SSL3_MT_SERVER_HELLO, l, 0, l);
-
- s->state=SSL3_ST_SW_SRVR_HELLO_B;
- /* number of bytes to write */
- s->init_num=p-buf;
- s->init_off=0;
-
- /* buffer the message to handle re-xmits */
- dtls1_buffer_message(s, 0);
- }
-
- /* SSL3_ST_SW_SRVR_HELLO_B */
- return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
- }
-
-int dtls1_send_server_done(SSL *s)
- {
- unsigned char *p;
-
- if (s->state == SSL3_ST_SW_SRVR_DONE_A)
- {
- p=(unsigned char *)s->init_buf->data;
-
- /* do the header */
- p = dtls1_set_message_header(s, p, SSL3_MT_SERVER_DONE, 0, 0, 0);
-
- s->state=SSL3_ST_SW_SRVR_DONE_B;
- /* number of bytes to write */
- s->init_num=DTLS1_HM_HEADER_LENGTH;
- s->init_off=0;
-
- /* buffer the message to handle re-xmits */
- dtls1_buffer_message(s, 0);
- }
-
- /* SSL3_ST_SW_SRVR_DONE_B */
- return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
- }
-
-int dtls1_send_server_key_exchange(SSL *s)
- {
-#ifndef OPENSSL_NO_RSA
- unsigned char *q;
- int j,num;
- RSA *rsa;
- unsigned char md_buf[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
- unsigned int u;
-#endif
-#ifndef OPENSSL_NO_DH
- DH *dh=NULL,*dhp;
-#endif
-#ifndef OPENSSL_NO_ECDH
- EC_KEY *ecdh=NULL, *ecdhp;
- unsigned char *encodedPoint = NULL;
- int encodedlen = 0;
- int curve_id = 0;
- BN_CTX *bn_ctx = NULL;
-#endif
- EVP_PKEY *pkey;
- unsigned char *p,*d;
- int al,i;
- unsigned long type;
- int n;
- CERT *cert;
- BIGNUM *r[4];
- int nr[4],kn;
- BUF_MEM *buf;
- EVP_MD_CTX md_ctx;
-
- EVP_MD_CTX_init(&md_ctx);
- if (s->state == SSL3_ST_SW_KEY_EXCH_A)
- {
- type=s->s3->tmp.new_cipher->algorithm_mkey;
- cert=s->cert;
-
- buf=s->init_buf;
-
- r[0]=r[1]=r[2]=r[3]=NULL;
- n=0;
-#ifndef OPENSSL_NO_RSA
- if (type & SSL_kRSA)
- {
- rsa=cert->rsa_tmp;
- if ((rsa == NULL) && (s->cert->rsa_tmp_cb != NULL))
- {
- rsa=s->cert->rsa_tmp_cb(s,
- SSL_C_IS_EXPORT(s->s3->tmp.new_cipher),
- SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher));
- if(rsa == NULL)
- {
- al=SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_ERROR_GENERATING_TMP_RSA_KEY);
- goto f_err;
- }
- RSA_up_ref(rsa);
- cert->rsa_tmp=rsa;
- }
- if (rsa == NULL)
- {
- al=SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_MISSING_TMP_RSA_KEY);
- goto f_err;
- }
- r[0]=rsa->n;
- r[1]=rsa->e;
- s->s3->tmp.use_rsa_tmp=1;
- }
- else
-#endif
-#ifndef OPENSSL_NO_DH
- if (type & SSL_kEDH)
- {
- dhp=cert->dh_tmp;
- if ((dhp == NULL) && (s->cert->dh_tmp_cb != NULL))
- dhp=s->cert->dh_tmp_cb(s,
- SSL_C_IS_EXPORT(s->s3->tmp.new_cipher),
- SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher));
- if (dhp == NULL)
- {
- al=SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_MISSING_TMP_DH_KEY);
- goto f_err;
- }
-
- if (s->s3->tmp.dh != NULL)
- {
- DH_free(dh);
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
- goto err;
- }
-
- if ((dh=DHparams_dup(dhp)) == NULL)
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_DH_LIB);
- goto err;
- }
-
- s->s3->tmp.dh=dh;
- if ((dhp->pub_key == NULL ||
- dhp->priv_key == NULL ||
- (s->options & SSL_OP_SINGLE_DH_USE)))
- {
- if(!DH_generate_key(dh))
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,
- ERR_R_DH_LIB);
- goto err;
- }
- }
- else
- {
- dh->pub_key=BN_dup(dhp->pub_key);
- dh->priv_key=BN_dup(dhp->priv_key);
- if ((dh->pub_key == NULL) ||
- (dh->priv_key == NULL))
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_DH_LIB);
- goto err;
- }
- }
- r[0]=dh->p;
- r[1]=dh->g;
- r[2]=dh->pub_key;
- }
- else
-#endif
-#ifndef OPENSSL_NO_ECDH
- if (type & SSL_kEECDH)
- {
- const EC_GROUP *group;
-
- ecdhp=cert->ecdh_tmp;
- if ((ecdhp == NULL) && (s->cert->ecdh_tmp_cb != NULL))
- {
- ecdhp=s->cert->ecdh_tmp_cb(s,
- SSL_C_IS_EXPORT(s->s3->tmp.new_cipher),
- SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher));
- }
- if (ecdhp == NULL)
- {
- al=SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_MISSING_TMP_ECDH_KEY);
- goto f_err;
- }
-
- if (s->s3->tmp.ecdh != NULL)
- {
- EC_KEY_free(s->s3->tmp.ecdh);
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
- goto err;
- }
-
- /* Duplicate the ECDH structure. */
- if (ecdhp == NULL)
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
- goto err;
- }
- if ((ecdh = EC_KEY_dup(ecdhp)) == NULL)
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
- goto err;
- }
-
- s->s3->tmp.ecdh=ecdh;
- if ((EC_KEY_get0_public_key(ecdh) == NULL) ||
- (EC_KEY_get0_private_key(ecdh) == NULL) ||
- (s->options & SSL_OP_SINGLE_ECDH_USE))
- {
- if(!EC_KEY_generate_key(ecdh))
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
- goto err;
- }
- }
-
- if (((group = EC_KEY_get0_group(ecdh)) == NULL) ||
- (EC_KEY_get0_public_key(ecdh) == NULL) ||
- (EC_KEY_get0_private_key(ecdh) == NULL))
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
- goto err;
- }
-
- if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
- (EC_GROUP_get_degree(group) > 163))
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
- goto err;
- }
-
- /* XXX: For now, we only support ephemeral ECDH
- * keys over named (not generic) curves. For
- * supported named curves, curve_id is non-zero.
- */
- if ((curve_id =
- tls1_ec_nid2curve_id(EC_GROUP_get_curve_name(group)))
- == 0)
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNSUPPORTED_ELLIPTIC_CURVE);
- goto err;
- }
-
- /* Encode the public key.
- * First check the size of encoding and
- * allocate memory accordingly.
- */
- encodedlen = EC_POINT_point2oct(group,
- EC_KEY_get0_public_key(ecdh),
- POINT_CONVERSION_UNCOMPRESSED,
- NULL, 0, NULL);
-
- encodedPoint = (unsigned char *)
- OPENSSL_malloc(encodedlen*sizeof(unsigned char));
- bn_ctx = BN_CTX_new();
- if ((encodedPoint == NULL) || (bn_ctx == NULL))
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
-
- encodedlen = EC_POINT_point2oct(group,
- EC_KEY_get0_public_key(ecdh),
- POINT_CONVERSION_UNCOMPRESSED,
- encodedPoint, encodedlen, bn_ctx);
-
- if (encodedlen == 0)
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
- goto err;
- }
-
- BN_CTX_free(bn_ctx); bn_ctx=NULL;
-
- /* XXX: For now, we only support named (not
- * generic) curves in ECDH ephemeral key exchanges.
- * In this situation, we need four additional bytes
- * to encode the entire ServerECDHParams
- * structure.
- */
- n = 4 + encodedlen;
-
- /* We'll generate the serverKeyExchange message
- * explicitly so we can set these to NULLs
- */
- r[0]=NULL;
- r[1]=NULL;
- r[2]=NULL;
- r[3]=NULL;
- }
- else
-#endif /* !OPENSSL_NO_ECDH */
-#ifndef OPENSSL_NO_PSK
- if (type & SSL_kPSK)
- {
- /* reserve size for record length and PSK identity hint*/
- n+=2+strlen(s->ctx->psk_identity_hint);
- }
- else
-#endif /* !OPENSSL_NO_PSK */
- {
- al=SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
- goto f_err;
- }
- for (i=0; r[i] != NULL; i++)
- {
- nr[i]=BN_num_bytes(r[i]);
- n+=2+nr[i];
- }
-
- if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
- && !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
- {
- if ((pkey=ssl_get_sign_pkey(s,s->s3->tmp.new_cipher))
- == NULL)
- {
- al=SSL_AD_DECODE_ERROR;
- goto f_err;
- }
- kn=EVP_PKEY_size(pkey);
- }
- else
- {
- pkey=NULL;
- kn=0;
- }
-
- if (!BUF_MEM_grow_clean(buf,n+DTLS1_HM_HEADER_LENGTH+kn))
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_BUF);
- goto err;
- }
- d=(unsigned char *)s->init_buf->data;
- p= &(d[DTLS1_HM_HEADER_LENGTH]);
-
- for (i=0; r[i] != NULL; i++)
- {
- s2n(nr[i],p);
- BN_bn2bin(r[i],p);
- p+=nr[i];
- }
-
-#ifndef OPENSSL_NO_ECDH
- if (type & SSL_kEECDH)
- {
- /* XXX: For now, we only support named (not generic) curves.
- * In this situation, the serverKeyExchange message has:
- * [1 byte CurveType], [2 byte CurveName]
- * [1 byte length of encoded point], followed by
- * the actual encoded point itself
- */
- *p = NAMED_CURVE_TYPE;
- p += 1;
- *p = 0;
- p += 1;
- *p = curve_id;
- p += 1;
- *p = encodedlen;
- p += 1;
- memcpy((unsigned char*)p,
- (unsigned char *)encodedPoint,
- encodedlen);
- OPENSSL_free(encodedPoint);
- p += encodedlen;
- }
-#endif
-
-#ifndef OPENSSL_NO_PSK
- if (type & SSL_kPSK)
- {
- /* copy PSK identity hint */
- s2n(strlen(s->ctx->psk_identity_hint), p);
- strncpy((char *)p, s->ctx->psk_identity_hint, strlen(s->ctx->psk_identity_hint));
- p+=strlen(s->ctx->psk_identity_hint);
- }
-#endif
-
- /* not anonymous */
- if (pkey != NULL)
- {
- /* n is the length of the params, they start at
- * &(d[DTLS1_HM_HEADER_LENGTH]) and p points to the space
- * at the end. */
-#ifndef OPENSSL_NO_RSA
- if (pkey->type == EVP_PKEY_RSA)
- {
- q=md_buf;
- j=0;
- for (num=2; num > 0; num--)
- {
- 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,&(d[DTLS1_HM_HEADER_LENGTH]),n);
- EVP_DigestFinal_ex(&md_ctx,q,
- (unsigned int *)&i);
- q+=i;
- j+=i;
- }
- if (RSA_sign(NID_md5_sha1, md_buf, j,
- &(p[2]), &u, pkey->pkey.rsa) <= 0)
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_RSA);
- goto err;
- }
- s2n(u,p);
- n+=u+2;
- }
- else
-#endif
-#if !defined(OPENSSL_NO_DSA)
- if (pkey->type == EVP_PKEY_DSA)
- {
- /* lets do DSS */
- EVP_SignInit_ex(&md_ctx,EVP_dss1(), NULL);
- EVP_SignUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
- EVP_SignUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
- EVP_SignUpdate(&md_ctx,&(d[DTLS1_HM_HEADER_LENGTH]),n);
- if (!EVP_SignFinal(&md_ctx,&(p[2]),
- (unsigned int *)&i,pkey))
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_DSA);
- goto err;
- }
- s2n(i,p);
- n+=i+2;
- }
- else
-#endif
-#if !defined(OPENSSL_NO_ECDSA)
- if (pkey->type == EVP_PKEY_EC)
- {
- /* let's do ECDSA */
- EVP_SignInit_ex(&md_ctx,EVP_ecdsa(), NULL);
- EVP_SignUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
- EVP_SignUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
- EVP_SignUpdate(&md_ctx,&(d[4]),n);
- if (!EVP_SignFinal(&md_ctx,&(p[2]),
- (unsigned int *)&i,pkey))
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_ECDSA);
- goto err;
- }
- s2n(i,p);
- n+=i+2;
- }
- else
-#endif
- {
- /* Is this error check actually needed? */
- al=SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNKNOWN_PKEY_TYPE);
- goto f_err;
- }
- }
-
- d = dtls1_set_message_header(s, d,
- SSL3_MT_SERVER_KEY_EXCHANGE, n, 0, n);
-
- /* we should now have things packed up, so lets send
- * it off */
- s->init_num=n+DTLS1_HM_HEADER_LENGTH;
- s->init_off=0;
-
- /* buffer the message to handle re-xmits */
- dtls1_buffer_message(s, 0);
- }
-
- s->state = SSL3_ST_SW_KEY_EXCH_B;
- EVP_MD_CTX_cleanup(&md_ctx);
- return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-f_err:
- ssl3_send_alert(s,SSL3_AL_FATAL,al);
-err:
-#ifndef OPENSSL_NO_ECDH
- if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
- BN_CTX_free(bn_ctx);
-#endif
- EVP_MD_CTX_cleanup(&md_ctx);
- return(-1);
- }
-
-int dtls1_send_certificate_request(SSL *s)
- {
- unsigned char *p,*d;
- int i,j,nl,off,n;
- STACK_OF(X509_NAME) *sk=NULL;
- X509_NAME *name;
- BUF_MEM *buf;
- unsigned int msg_len;
-
- if (s->state == SSL3_ST_SW_CERT_REQ_A)
- {
- buf=s->init_buf;
-
- d=p=(unsigned char *)&(buf->data[DTLS1_HM_HEADER_LENGTH]);
-
- /* get the list of acceptable cert types */
- p++;
- n=ssl3_get_req_cert_type(s,p);
- d[0]=n;
- p+=n;
- n++;
-
- off=n;
- p+=2;
- n+=2;
-
- sk=SSL_get_client_CA_list(s);
- nl=0;
- if (sk != NULL)
- {
- for (i=0; i<sk_X509_NAME_num(sk); i++)
- {
- name=sk_X509_NAME_value(sk,i);
- j=i2d_X509_NAME(name,NULL);
- if (!BUF_MEM_grow_clean(buf,DTLS1_HM_HEADER_LENGTH+n+j+2))
- {
- SSLerr(SSL_F_DTLS1_SEND_CERTIFICATE_REQUEST,ERR_R_BUF_LIB);
- goto err;
- }
- p=(unsigned char *)&(buf->data[DTLS1_HM_HEADER_LENGTH+n]);
- if (!(s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
- {
- s2n(j,p);
- i2d_X509_NAME(name,&p);
- n+=2+j;
- nl+=2+j;
- }
- else
- {
- d=p;
- i2d_X509_NAME(name,&p);
- j-=2; s2n(j,d); j+=2;
- n+=j;
- nl+=j;
- }
- }
- }
- /* else no CA names */
- p=(unsigned char *)&(buf->data[DTLS1_HM_HEADER_LENGTH+off]);
- s2n(nl,p);
-
- d=(unsigned char *)buf->data;
- *(d++)=SSL3_MT_CERTIFICATE_REQUEST;
- l2n3(n,d);
- s2n(s->d1->handshake_write_seq,d);
- s->d1->handshake_write_seq++;
-
- /* we should now have things packed up, so lets send
- * it off */
-
- s->init_num=n+DTLS1_HM_HEADER_LENGTH;
- s->init_off=0;
-#ifdef NETSCAPE_HANG_BUG
-/* XXX: what to do about this? */
- p=(unsigned char *)s->init_buf->data + s->init_num;
-
- /* do the header */
- *(p++)=SSL3_MT_SERVER_DONE;
- *(p++)=0;
- *(p++)=0;
- *(p++)=0;
- s->init_num += 4;
-#endif
-
- /* XDTLS: set message header ? */
- msg_len = s->init_num - DTLS1_HM_HEADER_LENGTH;
- dtls1_set_message_header(s, (void *)s->init_buf->data,
- SSL3_MT_CERTIFICATE_REQUEST, msg_len, 0, msg_len);
-
- /* buffer the message to handle re-xmits */
- dtls1_buffer_message(s, 0);
-
- s->state = SSL3_ST_SW_CERT_REQ_B;
- }
-
- /* SSL3_ST_SW_CERT_REQ_B */
- return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-err:
- return(-1);
- }
-
-int dtls1_send_server_certificate(SSL *s)
- {
- unsigned long l;
- X509 *x;
-
- if (s->state == SSL3_ST_SW_CERT_A)
- {
- x=ssl_get_server_send_cert(s);
- if (x == NULL)
- {
- /* VRS: allow null cert if auth == KRB5 */
- if ((s->s3->tmp.new_cipher->algorithm_mkey != SSL_kKRB5) ||
- (s->s3->tmp.new_cipher->algorithm_auth != SSL_aKRB5))
- {
- SSLerr(SSL_F_DTLS1_SEND_SERVER_CERTIFICATE,ERR_R_INTERNAL_ERROR);
- return(0);
- }
- }
-
- l=dtls1_output_cert_chain(s,x);
- s->state=SSL3_ST_SW_CERT_B;
- s->init_num=(int)l;
- s->init_off=0;
-
- /* buffer the message to handle re-xmits */
- dtls1_buffer_message(s, 0);
- }
-
- /* SSL3_ST_SW_CERT_B */
- return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
- }
-
-#ifndef OPENSSL_NO_TLSEXT
-int dtls1_send_newsession_ticket(SSL *s)
- {
- if (s->state == SSL3_ST_SW_SESSION_TICKET_A)
- {
- unsigned char *p, *senc, *macstart;
- int len, slen;
- unsigned int hlen, msg_len;
- EVP_CIPHER_CTX ctx;
- HMAC_CTX hctx;
- SSL_CTX *tctx = s->initial_ctx;
- unsigned char iv[EVP_MAX_IV_LENGTH];
- unsigned char key_name[16];
-
- /* get session encoding length */
- slen = i2d_SSL_SESSION(s->session, NULL);
- /* Some length values are 16 bits, so forget it if session is
- * too long
- */
- if (slen > 0xFF00)
- return -1;
- /* Grow buffer if need be: the length calculation is as
- * follows 12 (DTLS handshake message header) +
- * 4 (ticket lifetime hint) + 2 (ticket length) +
- * 16 (key name) + max_iv_len (iv length) +
- * session_length + max_enc_block_size (max encrypted session
- * length) + max_md_size (HMAC).
- */
- if (!BUF_MEM_grow(s->init_buf,
- DTLS1_HM_HEADER_LENGTH + 22 + EVP_MAX_IV_LENGTH +
- EVP_MAX_BLOCK_LENGTH + EVP_MAX_MD_SIZE + slen))
- return -1;
- senc = OPENSSL_malloc(slen);
- if (!senc)
- return -1;
- p = senc;
- i2d_SSL_SESSION(s->session, &p);
-
- p=(unsigned char *)&(s->init_buf->data[DTLS1_HM_HEADER_LENGTH]);
- EVP_CIPHER_CTX_init(&ctx);
- HMAC_CTX_init(&hctx);
- /* Initialize HMAC and cipher contexts. If callback present
- * it does all the work otherwise use generated values
- * from parent ctx.
- */
- if (tctx->tlsext_ticket_key_cb)
- {
- if (tctx->tlsext_ticket_key_cb(s, key_name, iv, &ctx,
- &hctx, 1) < 0)
- {
- OPENSSL_free(senc);
- return -1;
- }
- }
- else
- {
- RAND_pseudo_bytes(iv, 16);
- EVP_EncryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL,
- tctx->tlsext_tick_aes_key, iv);
- HMAC_Init_ex(&hctx, tctx->tlsext_tick_hmac_key, 16,
- tlsext_tick_md(), NULL);
- memcpy(key_name, tctx->tlsext_tick_key_name, 16);
- }
- l2n(s->session->tlsext_tick_lifetime_hint, p);
- /* Skip ticket length for now */
- p += 2;
- /* Output key name */
- macstart = p;
- memcpy(p, key_name, 16);
- p += 16;
- /* output IV */
- memcpy(p, iv, EVP_CIPHER_CTX_iv_length(&ctx));
- p += EVP_CIPHER_CTX_iv_length(&ctx);
- /* Encrypt session data */
- EVP_EncryptUpdate(&ctx, p, &len, senc, slen);
- p += len;
- EVP_EncryptFinal(&ctx, p, &len);
- p += len;
- EVP_CIPHER_CTX_cleanup(&ctx);
-
- HMAC_Update(&hctx, macstart, p - macstart);
- HMAC_Final(&hctx, p, &hlen);
- HMAC_CTX_cleanup(&hctx);
-
- p += hlen;
- /* Now write out lengths: p points to end of data written */
- /* Total length */
- len = p - (unsigned char *)(s->init_buf->data);
- /* Ticket length */
- p=(unsigned char *)&(s->init_buf->data[DTLS1_HM_HEADER_LENGTH]) + 4;
- s2n(len - DTLS1_HM_HEADER_LENGTH - 6, p);
-
- /* number of bytes to write */
- s->init_num= len;
- s->state=SSL3_ST_SW_SESSION_TICKET_B;
- s->init_off=0;
- OPENSSL_free(senc);
-
- /* XDTLS: set message header ? */
- msg_len = s->init_num - DTLS1_HM_HEADER_LENGTH;
- dtls1_set_message_header(s, (void *)s->init_buf->data,
- SSL3_MT_NEWSESSION_TICKET, msg_len, 0, msg_len);
-
- /* buffer the message to handle re-xmits */
- dtls1_buffer_message(s, 0);
- }
-
- /* SSL3_ST_SW_SESSION_TICKET_B */
- return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
- }
-#endif