mirror of
https://github.com/curl/curl.git
synced 2024-12-21 06:50:10 +08:00
5a053ffe80
This commit renames lib/setup.h to lib/curl_setup.h and
renames lib/setup_once.h to lib/curl_setup_once.h.
Removes the need and usage of a header inclusion guard foreign
to libcurl. [1]
Removes the need and presence of an alarming notice we carried
in old setup_once.h [2]
----------------------------------------
1 - lib/setup_once.h used __SETUP_ONCE_H macro as header inclusion guard
up to commit ec691ca3 which changed this to HEADER_CURL_SETUP_ONCE_H,
this single inclusion guard is enough to ensure that inclusion of
lib/setup_once.h done from lib/setup.h is only done once.
Additionally lib/setup.h has always used __SETUP_ONCE_H macro to
protect inclusion of setup_once.h even after commit ec691ca3, this
was to avoid a circular header inclusion triggered when building a
c-ares enabled version with c-ares sources available which also has
a setup_once.h header. Commit ec691ca3 exposes the real nature of
__SETUP_ONCE_H usage in lib/setup.h, it is a header inclusion guard
foreign to libcurl belonging to c-ares's setup_once.h
The renaming this commit does, fixes the circular header inclusion,
and as such removes the need and usage of a header inclusion guard
foreign to libcurl. Macro __SETUP_ONCE_H no longer used in libcurl.
2 - Due to the circular interdependency of old lib/setup_once.h and the
c-ares setup_once.h header, old file lib/setup_once.h has carried
back from 2006 up to now days an alarming and prominent notice about
the need of keeping libcurl's and c-ares's setup_once.h in sync.
Given that this commit fixes the circular interdependency, the need
and presence of mentioned notice is removed.
All mentioned interdependencies come back from now old days when
the c-ares project lived inside a curl subdirectory. This commit
removes last traces of such fact.
134 lines
4.1 KiB
C
134 lines
4.1 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* This software is licensed as described in the file COPYING, which
|
|
* you should have received as part of this distribution. The terms
|
|
* are also available at http://curl.haxx.se/docs/copyright.html.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the COPYING file.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
* RFC2104 Keyed-Hashing for Message Authentication
|
|
*
|
|
***************************************************************************/
|
|
|
|
#include "curl_setup.h"
|
|
|
|
#ifndef CURL_DISABLE_CRYPTO_AUTH
|
|
|
|
#include "curl_hmac.h"
|
|
|
|
#define _MPRINTF_REPLACE /* use our functions only */
|
|
#include <curl/mprintf.h>
|
|
|
|
#include "curl_memory.h"
|
|
/* The last #include file should be: */
|
|
#include "memdebug.h"
|
|
|
|
/*
|
|
* Generic HMAC algorithm.
|
|
*
|
|
* This module computes HMAC digests based on any hash function. Parameters
|
|
* and computing procedures are set-up dynamically at HMAC computation
|
|
* context initialisation.
|
|
*/
|
|
|
|
static const unsigned char hmac_ipad = 0x36;
|
|
static const unsigned char hmac_opad = 0x5C;
|
|
|
|
|
|
|
|
HMAC_context *
|
|
Curl_HMAC_init(const HMAC_params * hashparams,
|
|
const unsigned char * key,
|
|
unsigned int keylen)
|
|
{
|
|
size_t i;
|
|
HMAC_context * ctxt;
|
|
unsigned char * hkey;
|
|
unsigned char b;
|
|
|
|
/* Create HMAC context. */
|
|
i = sizeof *ctxt + 2 * hashparams->hmac_ctxtsize +
|
|
hashparams->hmac_resultlen;
|
|
ctxt = malloc(i);
|
|
|
|
if(!ctxt)
|
|
return ctxt;
|
|
|
|
ctxt->hmac_hash = hashparams;
|
|
ctxt->hmac_hashctxt1 = (void *) (ctxt + 1);
|
|
ctxt->hmac_hashctxt2 = (void *) ((char *) ctxt->hmac_hashctxt1 +
|
|
hashparams->hmac_ctxtsize);
|
|
|
|
/* If the key is too long, replace it by its hash digest. */
|
|
if(keylen > hashparams->hmac_maxkeylen) {
|
|
(*hashparams->hmac_hinit)(ctxt->hmac_hashctxt1);
|
|
(*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt1, key, keylen);
|
|
hkey = (unsigned char *) ctxt->hmac_hashctxt2 + hashparams->hmac_ctxtsize;
|
|
(*hashparams->hmac_hfinal)(hkey, ctxt->hmac_hashctxt1);
|
|
key = hkey;
|
|
keylen = hashparams->hmac_resultlen;
|
|
}
|
|
|
|
/* Prime the two hash contexts with the modified key. */
|
|
(*hashparams->hmac_hinit)(ctxt->hmac_hashctxt1);
|
|
(*hashparams->hmac_hinit)(ctxt->hmac_hashctxt2);
|
|
|
|
for(i = 0; i < keylen; i++) {
|
|
b = (unsigned char)(*key ^ hmac_ipad);
|
|
(*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt1, &b, 1);
|
|
b = (unsigned char)(*key++ ^ hmac_opad);
|
|
(*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt2, &b, 1);
|
|
}
|
|
|
|
for(; i < hashparams->hmac_maxkeylen; i++) {
|
|
(*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt1, &hmac_ipad, 1);
|
|
(*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt2, &hmac_opad, 1);
|
|
}
|
|
|
|
/* Done, return pointer to HMAC context. */
|
|
return ctxt;
|
|
}
|
|
|
|
int Curl_HMAC_update(HMAC_context * ctxt,
|
|
const unsigned char * data,
|
|
unsigned int len)
|
|
{
|
|
/* Update first hash calculation. */
|
|
(*ctxt->hmac_hash->hmac_hupdate)(ctxt->hmac_hashctxt1, data, len);
|
|
return 0;
|
|
}
|
|
|
|
|
|
int Curl_HMAC_final(HMAC_context * ctxt, unsigned char * result)
|
|
{
|
|
const HMAC_params * hashparams = ctxt->hmac_hash;
|
|
|
|
/* Do not get result if called with a null parameter: only release
|
|
storage. */
|
|
|
|
if(!result)
|
|
result = (unsigned char *) ctxt->hmac_hashctxt2 +
|
|
ctxt->hmac_hash->hmac_ctxtsize;
|
|
|
|
(*hashparams->hmac_hfinal)(result, ctxt->hmac_hashctxt1);
|
|
(*hashparams->hmac_hupdate)(ctxt->hmac_hashctxt2,
|
|
result, hashparams->hmac_resultlen);
|
|
(*hashparams->hmac_hfinal)(result, ctxt->hmac_hashctxt2);
|
|
free((char *) ctxt);
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CURL_DISABLE_CRYPTO_AUTH */
|