getdns/src/gnutls/pubkey-pinning-internal.c

60 lines
2.1 KiB
C

/**
*
* /brief functions for dealing with pubkey pinsets
*
*/
/*
* Copyright (c) 2015 ACLU
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the names of the copyright holders nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 Verisign, Inc. 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.
*/
#include "context.h"
#include <nettle/base64.h>
#include "types-internal.h"
#include "pubkey-pinning.h"
/**
** Interfaces from pubkey-pinning.h
**/
getdns_return_t _getdns_decode_base64(const char* str, uint8_t* res, size_t res_size)
{
struct base64_decode_ctx ctx;
uint8_t* lim = res + res_size;
base64_decode_init(&ctx);
for(; *str != '\0' && res < lim; ++str) {
int r = base64_decode_single(&ctx, res, *str);
if (r == -1 )
return GETDNS_RETURN_GENERIC_ERROR;
res += r;
}
return (res == lim) ? GETDNS_RETURN_GOOD : GETDNS_RETURN_GENERIC_ERROR;
}