mirror of https://github.com/aria2/aria2
112 lines
3.4 KiB
C++
112 lines
3.4 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2010 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#include "LibgcryptMessageDigestImpl.h"
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#include <algorithm>
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#include "array_fun.h"
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#include "HashFuncEntry.h"
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namespace aria2 {
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MessageDigestImpl::MessageDigestImpl(int hashFunc):hashFunc_(hashFunc)
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{
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gcry_md_open(&ctx_, hashFunc_, 0);
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}
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MessageDigestImpl::~MessageDigestImpl()
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{
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gcry_md_close(ctx_);
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}
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SharedHandle<MessageDigestImpl> MessageDigestImpl::sha1()
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{
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return SharedHandle<MessageDigestImpl>(new MessageDigestImpl(GCRY_MD_SHA1));
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}
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typedef HashFuncEntry<int> CHashFuncEntry;
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typedef FindHashFunc<int> CFindHashFunc;
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namespace {
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CHashFuncEntry hashFuncs[] = {
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CHashFuncEntry("sha-1", GCRY_MD_SHA1),
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CHashFuncEntry("sha-224", GCRY_MD_SHA224),
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CHashFuncEntry("sha-256", GCRY_MD_SHA256),
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CHashFuncEntry("sha-384", GCRY_MD_SHA384),
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CHashFuncEntry("sha-512", GCRY_MD_SHA512),
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CHashFuncEntry("md5", GCRY_MD_MD5)
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};
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} // namespace
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SharedHandle<MessageDigestImpl> MessageDigestImpl::create
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(const std::string& hashType)
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{
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int hashFunc = getHashFunc(vbegin(hashFuncs), vend(hashFuncs), hashType);
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return SharedHandle<MessageDigestImpl>(new MessageDigestImpl(hashFunc));
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}
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bool MessageDigestImpl::supports(const std::string& hashType)
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{
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return vend(hashFuncs) != std::find_if(vbegin(hashFuncs), vend(hashFuncs),
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CFindHashFunc(hashType));
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}
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size_t MessageDigestImpl::getDigestLength(const std::string& hashType)
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{
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int hashFunc = getHashFunc(vbegin(hashFuncs), vend(hashFuncs), hashType);
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return gcry_md_get_algo_dlen(hashFunc);
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}
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size_t MessageDigestImpl::getDigestLength() const
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{
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return gcry_md_get_algo_dlen(hashFunc_);
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}
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void MessageDigestImpl::reset()
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{
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gcry_md_reset(ctx_);
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}
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void MessageDigestImpl::update(const void* data, size_t length)
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{
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gcry_md_write(ctx_, data, length);
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}
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void MessageDigestImpl::digest(unsigned char* md)
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{
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memcpy(md, gcry_md_read(ctx_, 0), gcry_md_get_algo_dlen(hashFunc_));
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}
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} // namespace aria2
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