GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libssl/d1_srtp.c Lines: 36 44 81.8 %
Date: 2017-11-13 Branches: 21 28 75.0 %

Line Branch Exec Source
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/* $OpenBSD: d1_srtp.c,v 1.22 2017/08/27 02:58:04 doug 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) 1998-2006 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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 * DTLS code by Eric Rescorla <ekr@rtfm.com>
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 *
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 * Copyright (C) 2006, Network Resonance, Inc.
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 * Copyright (C) 2011, RTFM, Inc.
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 */
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#include <stdio.h>
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#include <openssl/objects.h>
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#include "ssl_locl.h"
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#ifndef OPENSSL_NO_SRTP
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#include "bytestring.h"
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#include "srtp.h"
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static SRTP_PROTECTION_PROFILE srtp_known_profiles[] = {
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	{
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		"SRTP_AES128_CM_SHA1_80",
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		SRTP_AES128_CM_SHA1_80,
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	},
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	{
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		"SRTP_AES128_CM_SHA1_32",
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		SRTP_AES128_CM_SHA1_32,
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	},
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	{0}
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};
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int
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srtp_find_profile_by_name(char *profile_name, SRTP_PROTECTION_PROFILE **pptr,
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    unsigned len)
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{
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	SRTP_PROTECTION_PROFILE *p;
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	p = srtp_known_profiles;
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	while (p->name) {
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		if ((len == strlen(p->name)) &&
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		    !strncmp(p->name, profile_name, len)) {
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			*pptr = p;
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			return 0;
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		}
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		p++;
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	}
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	return 1;
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}
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int
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srtp_find_profile_by_num(unsigned profile_num, SRTP_PROTECTION_PROFILE **pptr)
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{
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	SRTP_PROTECTION_PROFILE *p;
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	p = srtp_known_profiles;
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	while (p->name) {
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		if (p->id == profile_num) {
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			*pptr = p;
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			return 0;
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		}
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		p++;
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	}
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	return 1;
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}
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static int
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ssl_ctx_make_profiles(const char *profiles_string,
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    STACK_OF(SRTP_PROTECTION_PROFILE) **out)
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{
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	STACK_OF(SRTP_PROTECTION_PROFILE) *profiles;
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	char *col;
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	char *ptr = (char *)profiles_string;
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	SRTP_PROTECTION_PROFILE *p;
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	if (!(profiles = sk_SRTP_PROTECTION_PROFILE_new_null())) {
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		SSLerrorx(SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES);
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		return 1;
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	}
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	do {
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		col = strchr(ptr, ':');
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		if (!srtp_find_profile_by_name(ptr, &p,
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		    col ? col - ptr : (int)strlen(ptr))) {
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			sk_SRTP_PROTECTION_PROFILE_push(profiles, p);
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		} else {
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			SSLerrorx(SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE);
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			sk_SRTP_PROTECTION_PROFILE_free(profiles);
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			return 1;
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		}
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		if (col)
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			ptr = col + 1;
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	} while (col);
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	*out = profiles;
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	return 0;
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}
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int
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SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx, const char *profiles)
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{
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	return ssl_ctx_make_profiles(profiles, &ctx->internal->srtp_profiles);
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}
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int
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SSL_set_tlsext_use_srtp(SSL *s, const char *profiles)
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{
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	return ssl_ctx_make_profiles(profiles, &s->internal->srtp_profiles);
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}
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STACK_OF(SRTP_PROTECTION_PROFILE) *
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SSL_get_srtp_profiles(SSL *s)
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{
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	if (s != NULL) {
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		if (s->internal->srtp_profiles != NULL) {
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			return s->internal->srtp_profiles;
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		} else if ((s->ctx != NULL) &&
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		    (s->ctx->internal->srtp_profiles != NULL)) {
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			return s->ctx->internal->srtp_profiles;
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		}
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	}
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	return NULL;
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}
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SRTP_PROTECTION_PROFILE *
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SSL_get_selected_srtp_profile(SSL *s)
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{
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	return s->internal->srtp_profile;
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}
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#endif