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cpp-libs
libnice
Commits
8148197a
Commit
8148197a
authored
May 28, 2008
by
Youness Alaoui
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removing nonce.c which is also unused
parent
74576117
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stun/nonce.c
stun/nonce.c
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74576117
/*
* This file is part of the Nice GLib ICE library.
*
* (C) 2007 Nokia Corporation. All rights reserved.
* Contact: Rémi Denis-Courmont
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Nice GLib ICE library.
*
* The Initial Developers of the Original Code are Collabora Ltd and Nokia
* Corporation. All Rights Reserved.
*
* Contributors:
* Rémi Denis-Courmont, Nokia
*
* Alternatively, the contents of this file may be used under the terms of the
* the GNU Lesser General Public License Version 2.1 (the "LGPL"), in which
* case the provisions of LGPL are applicable instead of those above. If you
* wish to allow use of your version of this file only under the terms of the
* LGPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replace
* them with the notice and other provisions required by the LGPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the LGPL.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <pthread.h>
#include <openssl/rand.h>
#include <stdint.h>
#define UNIQUE_SIZE 20u
#define NONCE_SIZE 24u
static
uint8_t
unique_id
[
UNIQUE_SIZE
];
static
void
generate_unique_id
(
void
)
{
RAND_pseudo_bytes
(
unique_id
,
sizeof
(
unique_id
));
}
static
void
stun_generate_nonce
(
uint8_t
*
nonce
,
time_t
now
,
const
struct
sockaddr_storage
*
restrict
addr
)
{
static
pthread_once_t
once
=
PTHREAD_ONCE_INIT
;
HMAC_CTX
ctx
;
uint32_t
stamp
=
now
;
pthread_once
(
&
once
,
generate_unique_id
);
/*
* Nonce are generated from the current time and the client address and
* port number, keyed with a pseudo-random secret.
*/
HMAC_CTX_init
(
&
ctx
);
HMAC_Init_ex
(
&
ctx
,
unique_id
,
sizeof
(
unique_id
),
EVP_sha1
(),
NULL
);
HMAC_Update
(
&
ctx
,
&
stamp
,
4
);
HMAC_Update
(
&
ctx
,
&
ss
->
family
,
sizeof
(
ss
->
family
));
switch
(
addr
->
ss_family
)
{
case
AF_INET
:
{
const
struct
sockaddr_in
*
ip4
=
(
const
struct
sockaddr_in
*
)
addr
;
HMAC_Update
(
&
ctx
,
&
ip4
->
sin_addr
,
4
);
HMAC_Update
(
&
ctx
,
&
ip4
->
sin_port
,
2
);
break
;
}
case
AF_INET6
:
{
const
struct
sockaddr_in6
*
ip6
=
(
const
struct
sockaddr_in6
*
)
addr
;
HMAC_Update
(
&
ctx
,
&
ip6
->
sin6_addr
,
16
);
HMAC_Update
(
&
ctx
,
&
ip6
->
sin6_port
,
2
);
if
(
IN6_IS_ADDR_LINK_LOCAL
(
&
ip6
->
sin6_addr
))
HMAC_Update
(
&
ctx
,
&
ip6
->
sin6_scope_id
sizeof
(
ip6
->
sin6_scope_id
));
break
;
}
}
HMAC_Final
(
&
ctx
,
nonce
,
NULL
);
HMAC_CTX_cleanup
(
&
ctx
);
memcpy
(
nonce
+
20
,
&
stamp
,
4
);
}
static
int
stun_append_nonce
(
uint8_t
*
buf
,
size_t
buflen
,
const
struct
sockaddr_storage
*
restrict
addr
)
{
uint8_t
nonce
[
NONCE_SIZE
];
stun_generate_nonce
(
nonce
,
time
(
NULL
),
addr
);
return
stun_append_bytes
(
buf
,
buflen
,
STUN_NONCE
,
nonce
,
sizeof
(
nonce
));
}
static
int
stun_verify_nonce
(
const
uint8_t
*
buf
,
unsigned
valid_time
,
const
struct
sockaddr_storage
*
restrict
addr
)
{
const
uint8_t
*
stun_generate_nonce
(
nonce
,
time
(
NULL
),
addr
);
return
stun_append_bytes
(
buf
,
buflen
,
STUN_NONCE
,
nonce
,
sizeof
(
nonce
));
}
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