mirror of
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791 lines
21 KiB
C
Executable File
791 lines
21 KiB
C
Executable File
/* $OpenBSD: ssl_both.c,v 1.20 2020/09/24 18:12:00 jsing Exp $ */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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/* ====================================================================
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* Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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/* ====================================================================
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* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
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* ECC cipher suite support in OpenSSL originally developed by
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* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
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*/
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#include <limits.h>
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#include <stdio.h>
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#include <string.h>
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#include "ssl_locl.h"
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#include <openssl/buffer.h>
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#include <openssl/evp.h>
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#include <openssl/objects.h>
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#include <openssl/x509.h>
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#include "bytestring.h"
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/*
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* Send s->internal->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or
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* SSL3_RT_CHANGE_CIPHER_SPEC).
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*/
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int
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ssl3_do_write(SSL *s, int type)
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{
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int ret;
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ret = ssl3_write_bytes(s, type, &s->internal->init_buf->data[s->internal->init_off],
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s->internal->init_num);
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if (ret < 0)
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return (-1);
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if (type == SSL3_RT_HANDSHAKE)
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/*
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* Should not be done for 'Hello Request's, but in that case
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* we'll ignore the result anyway.
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*/
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tls1_transcript_record(s,
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(unsigned char *)&s->internal->init_buf->data[s->internal->init_off], ret);
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if (ret == s->internal->init_num) {
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if (s->internal->msg_callback)
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s->internal->msg_callback(1, s->version, type, s->internal->init_buf->data,
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(size_t)(s->internal->init_off + s->internal->init_num), s,
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s->internal->msg_callback_arg);
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return (1);
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}
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s->internal->init_off += ret;
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s->internal->init_num -= ret;
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return (0);
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}
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int
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ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen)
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{
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CBB cbb, finished;
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int md_len;
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memset(&cbb, 0, sizeof(cbb));
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if (S3I(s)->hs.state == a) {
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md_len = TLS1_FINISH_MAC_LENGTH;
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OPENSSL_assert(md_len <= EVP_MAX_MD_SIZE);
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if (tls1_final_finish_mac(s, sender, slen,
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S3I(s)->tmp.finish_md) != md_len)
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return (0);
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S3I(s)->tmp.finish_md_len = md_len;
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/* Copy finished so we can use it for renegotiation checks. */
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if (s->internal->type == SSL_ST_CONNECT) {
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memcpy(S3I(s)->previous_client_finished,
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S3I(s)->tmp.finish_md, md_len);
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S3I(s)->previous_client_finished_len = md_len;
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} else {
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memcpy(S3I(s)->previous_server_finished,
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S3I(s)->tmp.finish_md, md_len);
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S3I(s)->previous_server_finished_len = md_len;
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}
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if (!ssl3_handshake_msg_start(s, &cbb, &finished,
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SSL3_MT_FINISHED))
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goto err;
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if (!CBB_add_bytes(&finished, S3I(s)->tmp.finish_md, md_len))
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goto err;
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if (!ssl3_handshake_msg_finish(s, &cbb))
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goto err;
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S3I(s)->hs.state = b;
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}
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return (ssl3_handshake_write(s));
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err:
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CBB_cleanup(&cbb);
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return (-1);
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}
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/*
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* ssl3_take_mac calculates the Finished MAC for the handshakes messages seen
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* so far.
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*/
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static void
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ssl3_take_mac(SSL *s)
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{
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const char *sender;
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int slen;
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/*
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* If no new cipher setup return immediately: other functions will
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* set the appropriate error.
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*/
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if (S3I(s)->hs.new_cipher == NULL)
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return;
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if (S3I(s)->hs.state & SSL_ST_CONNECT) {
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sender = TLS_MD_SERVER_FINISH_CONST;
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slen = TLS_MD_SERVER_FINISH_CONST_SIZE;
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} else {
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sender = TLS_MD_CLIENT_FINISH_CONST;
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slen = TLS_MD_CLIENT_FINISH_CONST_SIZE;
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}
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S3I(s)->tmp.peer_finish_md_len =
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tls1_final_finish_mac(s, sender, slen,
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S3I(s)->tmp.peer_finish_md);
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}
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int
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ssl3_get_finished(SSL *s, int a, int b)
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{
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int al, ok, md_len;
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long n;
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CBS cbs;
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/* should actually be 36+4 :-) */
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n = ssl3_get_message(s, a, b, SSL3_MT_FINISHED, 64, &ok);
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if (!ok)
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return ((int)n);
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/* If this occurs, we have missed a message */
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if (!S3I(s)->change_cipher_spec) {
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al = SSL_AD_UNEXPECTED_MESSAGE;
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SSLerror(s, SSL_R_GOT_A_FIN_BEFORE_A_CCS);
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goto f_err;
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}
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S3I(s)->change_cipher_spec = 0;
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md_len = TLS1_FINISH_MAC_LENGTH;
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if (n < 0) {
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al = SSL_AD_DECODE_ERROR;
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SSLerror(s, SSL_R_BAD_DIGEST_LENGTH);
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goto f_err;
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}
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CBS_init(&cbs, s->internal->init_msg, n);
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if (S3I(s)->tmp.peer_finish_md_len != md_len ||
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CBS_len(&cbs) != md_len) {
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al = SSL_AD_DECODE_ERROR;
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SSLerror(s, SSL_R_BAD_DIGEST_LENGTH);
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goto f_err;
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}
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if (!CBS_mem_equal(&cbs, S3I(s)->tmp.peer_finish_md, CBS_len(&cbs))) {
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al = SSL_AD_DECRYPT_ERROR;
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SSLerror(s, SSL_R_DIGEST_CHECK_FAILED);
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goto f_err;
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}
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/* Copy finished so we can use it for renegotiation checks. */
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OPENSSL_assert(md_len <= EVP_MAX_MD_SIZE);
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if (s->internal->type == SSL_ST_ACCEPT) {
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memcpy(S3I(s)->previous_client_finished,
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S3I(s)->tmp.peer_finish_md, md_len);
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S3I(s)->previous_client_finished_len = md_len;
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} else {
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memcpy(S3I(s)->previous_server_finished,
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S3I(s)->tmp.peer_finish_md, md_len);
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S3I(s)->previous_server_finished_len = md_len;
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}
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return (1);
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f_err:
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ssl3_send_alert(s, SSL3_AL_FATAL, al);
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return (0);
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}
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/* for these 2 messages, we need to
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* ssl->enc_read_ctx re-init
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* ssl->s3->internal->read_sequence zero
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* ssl->s3->internal->read_mac_secret re-init
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* ssl->session->read_sym_enc assign
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* ssl->session->read_hash assign
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*/
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int
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ssl3_send_change_cipher_spec(SSL *s, int a, int b)
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{
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size_t outlen;
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CBB cbb;
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memset(&cbb, 0, sizeof(cbb));
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if (S3I(s)->hs.state == a) {
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if (!CBB_init_fixed(&cbb, s->internal->init_buf->data,
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s->internal->init_buf->length))
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goto err;
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if (!CBB_add_u8(&cbb, SSL3_MT_CCS))
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goto err;
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if (!CBB_finish(&cbb, NULL, &outlen))
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goto err;
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if (outlen > INT_MAX)
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goto err;
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s->internal->init_num = (int)outlen;
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s->internal->init_off = 0;
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if (SSL_IS_DTLS(s)) {
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D1I(s)->handshake_write_seq =
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D1I(s)->next_handshake_write_seq;
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dtls1_set_message_header_int(s, SSL3_MT_CCS, 0,
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D1I(s)->handshake_write_seq, 0, 0);
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dtls1_buffer_message(s, 1);
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}
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S3I(s)->hs.state = b;
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}
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/* SSL3_ST_CW_CHANGE_B */
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return ssl3_record_write(s, SSL3_RT_CHANGE_CIPHER_SPEC);
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err:
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CBB_cleanup(&cbb);
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return -1;
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}
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static int
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ssl3_add_cert(CBB *cbb, X509 *x)
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{
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unsigned char *data;
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int cert_len;
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int ret = 0;
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CBB cert;
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if ((cert_len = i2d_X509(x, NULL)) < 0)
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goto err;
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if (!CBB_add_u24_length_prefixed(cbb, &cert))
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goto err;
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if (!CBB_add_space(&cert, &data, cert_len))
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goto err;
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if (i2d_X509(x, &data) < 0)
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goto err;
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if (!CBB_flush(cbb))
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goto err;
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ret = 1;
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err:
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return (ret);
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}
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int
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ssl3_output_cert_chain(SSL *s, CBB *cbb, CERT_PKEY *cpk)
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{
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X509_STORE_CTX *xs_ctx = NULL;
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STACK_OF(X509) *chain;
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CBB cert_list;
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X509 *x;
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int ret = 0;
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int i;
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if (!CBB_add_u24_length_prefixed(cbb, &cert_list))
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goto err;
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/* Send an empty certificate list when no certificate is available. */
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if (cpk == NULL)
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goto done;
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if ((chain = cpk->chain) == NULL)
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chain = s->ctx->extra_certs;
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if (chain != NULL || (s->internal->mode & SSL_MODE_NO_AUTO_CHAIN)) {
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if (!ssl3_add_cert(&cert_list, cpk->x509))
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goto err;
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} else {
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if ((xs_ctx = X509_STORE_CTX_new()) == NULL)
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goto err;
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if (!X509_STORE_CTX_init(xs_ctx, s->ctx->cert_store,
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cpk->x509, NULL)) {
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SSLerror(s, ERR_R_X509_LIB);
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goto err;
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}
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X509_verify_cert(xs_ctx);
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ERR_clear_error();
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chain = xs_ctx->chain;
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}
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for (i = 0; i < sk_X509_num(chain); i++) {
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x = sk_X509_value(chain, i);
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if (!ssl3_add_cert(&cert_list, x))
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goto err;
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}
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done:
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if (!CBB_flush(cbb))
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goto err;
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ret = 1;
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err:
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X509_STORE_CTX_free(xs_ctx);
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return (ret);
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}
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/*
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* Obtain handshake message of message type 'mt' (any if mt == -1),
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* maximum acceptable body length 'max'.
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* The first four bytes (msg_type and length) are read in state 'st1',
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* the body is read in state 'stn'.
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*/
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long
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ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok)
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{
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unsigned char *p;
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uint32_t l;
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long n;
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int i, al;
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CBS cbs;
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uint8_t u8;
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if (SSL_IS_DTLS(s))
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return (dtls1_get_message(s, st1, stn, mt, max, ok));
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if (S3I(s)->tmp.reuse_message) {
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S3I(s)->tmp.reuse_message = 0;
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if ((mt >= 0) && (S3I(s)->tmp.message_type != mt)) {
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al = SSL_AD_UNEXPECTED_MESSAGE;
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SSLerror(s, SSL_R_UNEXPECTED_MESSAGE);
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goto f_err;
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}
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*ok = 1;
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s->internal->init_msg = s->internal->init_buf->data + 4;
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s->internal->init_num = (int)S3I(s)->tmp.message_size;
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return s->internal->init_num;
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}
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p = (unsigned char *)s->internal->init_buf->data;
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/* s->internal->init_num < 4 */
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if (S3I(s)->hs.state == st1) {
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int skip_message;
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do {
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while (s->internal->init_num < 4) {
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i = s->method->internal->ssl_read_bytes(s,
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SSL3_RT_HANDSHAKE, &p[s->internal->init_num],
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4 - s->internal->init_num, 0);
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if (i <= 0) {
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s->internal->rwstate = SSL_READING;
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*ok = 0;
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return i;
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}
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s->internal->init_num += i;
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}
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skip_message = 0;
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if (!s->server && p[0] == SSL3_MT_HELLO_REQUEST) {
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/*
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* The server may always send 'Hello Request'
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* messages -- we are doing a handshake anyway
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* now, so ignore them if their format is
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* correct. Does not count for 'Finished' MAC.
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*/
|
|
if (p[1] == 0 && p[2] == 0 &&p[3] == 0) {
|
|
s->internal->init_num = 0;
|
|
skip_message = 1;
|
|
|
|
if (s->internal->msg_callback)
|
|
s->internal->msg_callback(0, s->version,
|
|
SSL3_RT_HANDSHAKE, p, 4, s,
|
|
s->internal->msg_callback_arg);
|
|
}
|
|
}
|
|
} while (skip_message);
|
|
|
|
/* s->internal->init_num == 4 */
|
|
|
|
if ((mt >= 0) && (*p != mt)) {
|
|
al = SSL_AD_UNEXPECTED_MESSAGE;
|
|
SSLerror(s, SSL_R_UNEXPECTED_MESSAGE);
|
|
goto f_err;
|
|
}
|
|
|
|
CBS_init(&cbs, p, 4);
|
|
if (!CBS_get_u8(&cbs, &u8) ||
|
|
!CBS_get_u24(&cbs, &l)) {
|
|
SSLerror(s, ERR_R_BUF_LIB);
|
|
goto err;
|
|
}
|
|
S3I(s)->tmp.message_type = u8;
|
|
|
|
if (l > (unsigned long)max) {
|
|
al = SSL_AD_ILLEGAL_PARAMETER;
|
|
SSLerror(s, SSL_R_EXCESSIVE_MESSAGE_SIZE);
|
|
goto f_err;
|
|
}
|
|
if (l && !BUF_MEM_grow_clean(s->internal->init_buf, l + 4)) {
|
|
SSLerror(s, ERR_R_BUF_LIB);
|
|
goto err;
|
|
}
|
|
S3I(s)->tmp.message_size = l;
|
|
S3I(s)->hs.state = stn;
|
|
|
|
s->internal->init_msg = s->internal->init_buf->data + 4;
|
|
s->internal->init_num = 0;
|
|
}
|
|
|
|
/* next state (stn) */
|
|
p = s->internal->init_msg;
|
|
n = S3I(s)->tmp.message_size - s->internal->init_num;
|
|
while (n > 0) {
|
|
i = s->method->internal->ssl_read_bytes(s, SSL3_RT_HANDSHAKE,
|
|
&p[s->internal->init_num], n, 0);
|
|
if (i <= 0) {
|
|
s->internal->rwstate = SSL_READING;
|
|
*ok = 0;
|
|
return i;
|
|
}
|
|
s->internal->init_num += i;
|
|
n -= i;
|
|
}
|
|
|
|
/* If receiving Finished, record MAC of prior handshake messages for
|
|
* Finished verification. */
|
|
if (*s->internal->init_buf->data == SSL3_MT_FINISHED)
|
|
ssl3_take_mac(s);
|
|
|
|
/* Feed this message into MAC computation. */
|
|
if (s->internal->mac_packet) {
|
|
tls1_transcript_record(s, (unsigned char *)s->internal->init_buf->data,
|
|
s->internal->init_num + 4);
|
|
|
|
if (s->internal->msg_callback)
|
|
s->internal->msg_callback(0, s->version,
|
|
SSL3_RT_HANDSHAKE, s->internal->init_buf->data,
|
|
(size_t)s->internal->init_num + 4, s,
|
|
s->internal->msg_callback_arg);
|
|
}
|
|
|
|
*ok = 1;
|
|
return (s->internal->init_num);
|
|
|
|
f_err:
|
|
ssl3_send_alert(s, SSL3_AL_FATAL, al);
|
|
err:
|
|
*ok = 0;
|
|
return (-1);
|
|
}
|
|
|
|
int
|
|
ssl_cert_type(X509 *x, EVP_PKEY *pkey)
|
|
{
|
|
EVP_PKEY *pk;
|
|
int ret = -1, i;
|
|
|
|
if (pkey == NULL)
|
|
pk = X509_get_pubkey(x);
|
|
else
|
|
pk = pkey;
|
|
if (pk == NULL)
|
|
goto err;
|
|
|
|
i = pk->type;
|
|
if (i == EVP_PKEY_RSA) {
|
|
ret = SSL_PKEY_RSA;
|
|
} else if (i == EVP_PKEY_EC) {
|
|
ret = SSL_PKEY_ECC;
|
|
} else if (i == NID_id_GostR3410_2001 ||
|
|
i == NID_id_GostR3410_2001_cc) {
|
|
ret = SSL_PKEY_GOST01;
|
|
}
|
|
|
|
err:
|
|
if (!pkey)
|
|
EVP_PKEY_free(pk);
|
|
return (ret);
|
|
}
|
|
|
|
int
|
|
ssl_verify_alarm_type(long type)
|
|
{
|
|
int al;
|
|
|
|
switch (type) {
|
|
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
|
|
case X509_V_ERR_UNABLE_TO_GET_CRL:
|
|
case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
|
|
al = SSL_AD_UNKNOWN_CA;
|
|
break;
|
|
case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
|
|
case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
|
|
case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
|
|
case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
|
|
case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
|
|
case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
|
|
case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
|
|
case X509_V_ERR_CERT_NOT_YET_VALID:
|
|
case X509_V_ERR_CRL_NOT_YET_VALID:
|
|
case X509_V_ERR_CERT_UNTRUSTED:
|
|
case X509_V_ERR_CERT_REJECTED:
|
|
al = SSL_AD_BAD_CERTIFICATE;
|
|
break;
|
|
case X509_V_ERR_CERT_SIGNATURE_FAILURE:
|
|
case X509_V_ERR_CRL_SIGNATURE_FAILURE:
|
|
al = SSL_AD_DECRYPT_ERROR;
|
|
break;
|
|
case X509_V_ERR_CERT_HAS_EXPIRED:
|
|
case X509_V_ERR_CRL_HAS_EXPIRED:
|
|
al = SSL_AD_CERTIFICATE_EXPIRED;
|
|
break;
|
|
case X509_V_ERR_CERT_REVOKED:
|
|
al = SSL_AD_CERTIFICATE_REVOKED;
|
|
break;
|
|
case X509_V_ERR_OUT_OF_MEM:
|
|
al = SSL_AD_INTERNAL_ERROR;
|
|
break;
|
|
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
|
|
case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
|
|
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
|
|
case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
|
|
case X509_V_ERR_CERT_CHAIN_TOO_LONG:
|
|
case X509_V_ERR_PATH_LENGTH_EXCEEDED:
|
|
case X509_V_ERR_INVALID_CA:
|
|
al = SSL_AD_UNKNOWN_CA;
|
|
break;
|
|
case X509_V_ERR_APPLICATION_VERIFICATION:
|
|
al = SSL_AD_HANDSHAKE_FAILURE;
|
|
break;
|
|
case X509_V_ERR_INVALID_PURPOSE:
|
|
al = SSL_AD_UNSUPPORTED_CERTIFICATE;
|
|
break;
|
|
default:
|
|
al = SSL_AD_CERTIFICATE_UNKNOWN;
|
|
break;
|
|
}
|
|
return (al);
|
|
}
|
|
|
|
int
|
|
ssl3_setup_init_buffer(SSL *s)
|
|
{
|
|
BUF_MEM *buf = NULL;
|
|
|
|
if (s->internal->init_buf != NULL)
|
|
return (1);
|
|
|
|
if ((buf = BUF_MEM_new()) == NULL)
|
|
goto err;
|
|
if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH))
|
|
goto err;
|
|
|
|
s->internal->init_buf = buf;
|
|
return (1);
|
|
|
|
err:
|
|
BUF_MEM_free(buf);
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
ssl3_release_init_buffer(SSL *s)
|
|
{
|
|
BUF_MEM_free(s->internal->init_buf);
|
|
s->internal->init_buf = NULL;
|
|
s->internal->init_msg = NULL;
|
|
s->internal->init_num = 0;
|
|
s->internal->init_off = 0;
|
|
}
|
|
|
|
int
|
|
ssl3_setup_read_buffer(SSL *s)
|
|
{
|
|
unsigned char *p;
|
|
size_t len, align, headerlen;
|
|
|
|
if (SSL_IS_DTLS(s))
|
|
headerlen = DTLS1_RT_HEADER_LENGTH;
|
|
else
|
|
headerlen = SSL3_RT_HEADER_LENGTH;
|
|
|
|
align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1);
|
|
|
|
if (S3I(s)->rbuf.buf == NULL) {
|
|
len = SSL3_RT_MAX_PLAIN_LENGTH +
|
|
SSL3_RT_MAX_ENCRYPTED_OVERHEAD + headerlen + align;
|
|
if ((p = calloc(1, len)) == NULL)
|
|
goto err;
|
|
S3I(s)->rbuf.buf = p;
|
|
S3I(s)->rbuf.len = len;
|
|
}
|
|
|
|
s->internal->packet = S3I(s)->rbuf.buf;
|
|
return 1;
|
|
|
|
err:
|
|
SSLerror(s, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
ssl3_setup_write_buffer(SSL *s)
|
|
{
|
|
unsigned char *p;
|
|
size_t len, align, headerlen;
|
|
|
|
if (SSL_IS_DTLS(s))
|
|
headerlen = DTLS1_RT_HEADER_LENGTH + 1;
|
|
else
|
|
headerlen = SSL3_RT_HEADER_LENGTH;
|
|
|
|
align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1);
|
|
|
|
if (S3I(s)->wbuf.buf == NULL) {
|
|
len = s->max_send_fragment +
|
|
SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD + headerlen + align;
|
|
if (!(s->internal->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
|
|
len += headerlen + align +
|
|
SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD;
|
|
|
|
if ((p = calloc(1, len)) == NULL)
|
|
goto err;
|
|
S3I(s)->wbuf.buf = p;
|
|
S3I(s)->wbuf.len = len;
|
|
}
|
|
|
|
return 1;
|
|
|
|
err:
|
|
SSLerror(s, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
ssl3_setup_buffers(SSL *s)
|
|
{
|
|
if (!ssl3_setup_read_buffer(s))
|
|
return 0;
|
|
if (!ssl3_setup_write_buffer(s))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
ssl3_release_buffer(SSL3_BUFFER_INTERNAL *b)
|
|
{
|
|
freezero(b->buf, b->len);
|
|
b->buf = NULL;
|
|
b->len = 0;
|
|
}
|
|
|
|
void
|
|
ssl3_release_read_buffer(SSL *s)
|
|
{
|
|
ssl3_release_buffer(&S3I(s)->rbuf);
|
|
}
|
|
|
|
void
|
|
ssl3_release_write_buffer(SSL *s)
|
|
{
|
|
ssl3_release_buffer(&S3I(s)->wbuf);
|
|
}
|