Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libssl/d1_clnt.c	Lines:	16	35	45.7 %
Date:	2017-11-13	Branches:	3	16	18.8 %


/* $OpenBSD: d1_clnt.c,v 1.79 2017/10/10 15:13:26 jsing Exp $ */
/*
 * 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 <limits.h>
#include <stdio.h>

#include "ssl_locl.h"

#include <openssl/bn.h>
#include <openssl/buffer.h>
#include <openssl/dh.h>
#include <openssl/evp.h>
#include <openssl/md5.h>
#include <openssl/objects.h>

#include "bytestring.h"

static const SSL_METHOD_INTERNAL DTLSv1_client_method_internal_data = {
	.version = DTLS1_VERSION,
	.min_version = DTLS1_VERSION,
	.max_version = DTLS1_VERSION,
	.ssl_new = dtls1_new,
	.ssl_clear = dtls1_clear,
	.ssl_free = dtls1_free,
	.ssl_accept = ssl_undefined_function,
	.ssl_connect = ssl3_connect,
	.ssl_read = ssl3_read,
	.ssl_peek = ssl3_peek,
	.ssl_write = ssl3_write,
	.ssl_shutdown = dtls1_shutdown,
	.ssl_pending = ssl3_pending,
	.get_ssl_method = dtls1_get_client_method,
	.get_timeout = dtls1_default_timeout,
	.ssl_version = ssl_undefined_void_function,
	.ssl_renegotiate = ssl3_renegotiate,
	.ssl_renegotiate_check = ssl3_renegotiate_check,
	.ssl_get_message = dtls1_get_message,
	.ssl_read_bytes = dtls1_read_bytes,
	.ssl_write_bytes = dtls1_write_app_data_bytes,
	.ssl3_enc = &DTLSv1_enc_data,
};

static const SSL_METHOD DTLSv1_client_method_data = {
	.ssl_dispatch_alert = dtls1_dispatch_alert,
	.num_ciphers = ssl3_num_ciphers,
	.get_cipher = dtls1_get_cipher,
	.get_cipher_by_char = ssl3_get_cipher_by_char,
	.put_cipher_by_char = ssl3_put_cipher_by_char,
	.internal = &DTLSv1_client_method_internal_data,
};

const SSL_METHOD *
DTLSv1_client_method(void)
{
	return &DTLSv1_client_method_data;
}

const SSL_METHOD *
dtls1_get_client_method(int ver)
{
	if (ver == DTLS1_VERSION)
		return (DTLSv1_client_method());
	return (NULL);
}

int
dtls1_get_hello_verify(SSL *s)
{
	long n;
	int al, ok = 0;
	size_t cookie_len;
	uint16_t ssl_version;
	CBS hello_verify_request, cookie;

	n = s->method->internal->ssl_get_message(s, DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A,
	    DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B, -1, s->internal->max_cert_list, &ok);

	if (!ok)
		return ((int)n);

	if (S3I(s)->tmp.message_type != DTLS1_MT_HELLO_VERIFY_REQUEST) {
		D1I(s)->send_cookie = 0;
		S3I(s)->tmp.reuse_message = 1;
		return (1);
	}

	if (n < 0)
		goto truncated;

	CBS_init(&hello_verify_request, s->internal->init_msg, n);

	if (!CBS_get_u16(&hello_verify_request, &ssl_version))
		goto truncated;

	if (ssl_version != s->version) {
		SSLerror(s, SSL_R_WRONG_SSL_VERSION);
		s->version = (s->version & 0xff00) | (ssl_version & 0xff);
		al = SSL_AD_PROTOCOL_VERSION;
		goto f_err;
	}

	if (!CBS_get_u8_length_prefixed(&hello_verify_request, &cookie))
		goto truncated;

	if (!CBS_write_bytes(&cookie, D1I(s)->cookie,
	    sizeof(D1I(s)->cookie), &cookie_len)) {
		D1I(s)->cookie_len = 0;
		al = SSL_AD_ILLEGAL_PARAMETER;
		goto f_err;
	}
	D1I(s)->cookie_len = cookie_len;
	D1I(s)->send_cookie = 1;

	return 1;

truncated:
	al = SSL_AD_DECODE_ERROR;
f_err:
	ssl3_send_alert(s, SSL3_AL_FATAL, al);
	return -1;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: d1_clnt.c,v 1.79 2017/10/10 15:13:26 jsing Exp $ */
2			/*
3			* DTLS implementation written by Nagendra Modadugu
4			* (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
5			*/
6			/* ====================================================================
7			* Copyright (c) 1999-2007 The OpenSSL Project. All rights reserved.
8			*
9			* Redistribution and use in source and binary forms, with or without
10			* modification, are permitted provided that the following conditions
11			* are met:
12			*
13			* 1. Redistributions of source code must retain the above copyright
14			* notice, this list of conditions and the following disclaimer.
15			*
16			* 2. Redistributions in binary form must reproduce the above copyright
17			* notice, this list of conditions and the following disclaimer in
18			* the documentation and/or other materials provided with the
19			* distribution.
20			*
21			* 3. All advertising materials mentioning features or use of this
22			* software must display the following acknowledgment:
23			* "This product includes software developed by the OpenSSL Project
24			* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25			*
26			* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27			* endorse or promote products derived from this software without
28			* prior written permission. For written permission, please contact
29			* openssl-core@OpenSSL.org.
30			*
31			* 5. Products derived from this software may not be called "OpenSSL"
32			* nor may "OpenSSL" appear in their names without prior written
33			* permission of the OpenSSL Project.
34			*
35			* 6. Redistributions of any form whatsoever must retain the following
36			* acknowledgment:
37			* "This product includes software developed by the OpenSSL Project
38			* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39			*
40			* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41			* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43			* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44			* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47			* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49			* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50			* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51			* OF THE POSSIBILITY OF SUCH DAMAGE.
52			* ====================================================================
53			*
54			* This product includes cryptographic software written by Eric Young
55			* (eay@cryptsoft.com). This product includes software written by Tim
56			* Hudson (tjh@cryptsoft.com).
57			*
58			*/
59			/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
60			* All rights reserved.
61			*
62			* This package is an SSL implementation written
63			* by Eric Young (eay@cryptsoft.com).
64			* The implementation was written so as to conform with Netscapes SSL.
65			*
66			* This library is free for commercial and non-commercial use as long as
67			* the following conditions are aheared to. The following conditions
68			* apply to all code found in this distribution, be it the RC4, RSA,
69			* lhash, DES, etc., code; not just the SSL code. The SSL documentation
70			* included with this distribution is covered by the same copyright terms
71			* except that the holder is Tim Hudson (tjh@cryptsoft.com).
72			*
73			* Copyright remains Eric Young's, and as such any Copyright notices in
74			* the code are not to be removed.
75			* If this package is used in a product, Eric Young should be given attribution
76			* as the author of the parts of the library used.
77			* This can be in the form of a textual message at program startup or
78			* in documentation (online or textual) provided with the package.
79			*
80			* Redistribution and use in source and binary forms, with or without
81			* modification, are permitted provided that the following conditions
82			* are met:
83			* 1. Redistributions of source code must retain the copyright
84			* notice, this list of conditions and the following disclaimer.
85			* 2. Redistributions in binary form must reproduce the above copyright
86			* notice, this list of conditions and the following disclaimer in the
87			* documentation and/or other materials provided with the distribution.
88			* 3. All advertising materials mentioning features or use of this software
89			* must display the following acknowledgement:
90			* "This product includes cryptographic software written by
91			* Eric Young (eay@cryptsoft.com)"
92			* The word 'cryptographic' can be left out if the rouines from the library
93			* being used are not cryptographic related :-).
94			* 4. If you include any Windows specific code (or a derivative thereof) from
95			* the apps directory (application code) you must include an acknowledgement:
96			* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
97			*
98			* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
99			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
100			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
101			* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
102			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
103			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
104			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
105			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
106			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
107			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
108			* SUCH DAMAGE.
109			*
110			* The licence and distribution terms for any publically available version or
111			* derivative of this code cannot be changed. i.e. this code cannot simply be
112			* copied and put under another distribution licence
113			* [including the GNU Public Licence.]
114			*/
115
116			#include <limits.h>
117			#include <stdio.h>
118
119			#include "ssl_locl.h"
120
121			#include <openssl/bn.h>
122			#include <openssl/buffer.h>
123			#include <openssl/dh.h>
124			#include <openssl/evp.h>
125			#include <openssl/md5.h>
126			#include <openssl/objects.h>
127
128			#include "bytestring.h"
129
130			static const SSL_METHOD_INTERNAL DTLSv1_client_method_internal_data = {
131			.version = DTLS1_VERSION,
132			.min_version = DTLS1_VERSION,
133			.max_version = DTLS1_VERSION,
134			.ssl_new = dtls1_new,
135			.ssl_clear = dtls1_clear,
136			.ssl_free = dtls1_free,
137			.ssl_accept = ssl_undefined_function,
138			.ssl_connect = ssl3_connect,
139			.ssl_read = ssl3_read,
140			.ssl_peek = ssl3_peek,
141			.ssl_write = ssl3_write,
142			.ssl_shutdown = dtls1_shutdown,
143			.ssl_pending = ssl3_pending,
144			.get_ssl_method = dtls1_get_client_method,
145			.get_timeout = dtls1_default_timeout,
146			.ssl_version = ssl_undefined_void_function,
147			.ssl_renegotiate = ssl3_renegotiate,
148			.ssl_renegotiate_check = ssl3_renegotiate_check,
149			.ssl_get_message = dtls1_get_message,
150			.ssl_read_bytes = dtls1_read_bytes,
151			.ssl_write_bytes = dtls1_write_app_data_bytes,
152			.ssl3_enc = &DTLSv1_enc_data,
153			};
154
155			static const SSL_METHOD DTLSv1_client_method_data = {
156			.ssl_dispatch_alert = dtls1_dispatch_alert,
157			.num_ciphers = ssl3_num_ciphers,
158			.get_cipher = dtls1_get_cipher,
159			.get_cipher_by_char = ssl3_get_cipher_by_char,
160			.put_cipher_by_char = ssl3_put_cipher_by_char,
161			.internal = &DTLSv1_client_method_internal_data,
162			};
163
164			const SSL_METHOD *
165			DTLSv1_client_method(void)
166			{
167		96	return &DTLSv1_client_method_data;
168			}
169
170			const SSL_METHOD *
171			dtls1_get_client_method(int ver)
172			{
173	✓✗	72	if (ver == DTLS1_VERSION)
174		36	return (DTLSv1_client_method());
175			return (NULL);
176		36	}
177
178			int
179			dtls1_get_hello_verify(SSL *s)
180			{
181			long n;
182		72	int al, ok = 0;
183		36	size_t cookie_len;
184		36	uint16_t ssl_version;
185		36	CBS hello_verify_request, cookie;
186
187		72	n = s->method->internal->ssl_get_message(s, DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A,
188		36	DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B, -1, s->internal->max_cert_list, &ok);
189
190	✗✓	36	if (!ok)
191			return ((int)n);
192
193	✓✗	36	if (S3I(s)->tmp.message_type != DTLS1_MT_HELLO_VERIFY_REQUEST) {
194		36	D1I(s)->send_cookie = 0;
195		36	S3I(s)->tmp.reuse_message = 1;
196		36	return (1);
197			}
198
199			if (n < 0)
200			goto truncated;
201
202			CBS_init(&hello_verify_request, s->internal->init_msg, n);
203
204			if (!CBS_get_u16(&hello_verify_request, &ssl_version))
205			goto truncated;
206
207			if (ssl_version != s->version) {
208			SSLerror(s, SSL_R_WRONG_SSL_VERSION);
209			s->version = (s->version & 0xff00) \| (ssl_version & 0xff);
210			al = SSL_AD_PROTOCOL_VERSION;
211			goto f_err;
212			}
213
214			if (!CBS_get_u8_length_prefixed(&hello_verify_request, &cookie))
215			goto truncated;
216
217			if (!CBS_write_bytes(&cookie, D1I(s)->cookie,
218			sizeof(D1I(s)->cookie), &cookie_len)) {
219			D1I(s)->cookie_len = 0;
220			al = SSL_AD_ILLEGAL_PARAMETER;
221			goto f_err;
222			}
223			D1I(s)->cookie_len = cookie_len;
224			D1I(s)->send_cookie = 1;
225
226			return 1;
227
228			truncated:
229			al = SSL_AD_DECODE_ERROR;
230			f_err:
231			ssl3_send_alert(s, SSL3_AL_FATAL, al);
232			return -1;
233		36	}