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/* <!-- copyright */
/*
* aria2 - a simple utility for downloading files faster
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* copyright --> */
#ifndef _D_MESSAGE_DIGEST_H_
#define _D_MESSAGE_DIGEST_H_
#include "common.h"
#ifdef ENABLE_SSL
#ifdef HAVE_LIBSSL
#include <openssl/evp.h>
#endif // HAVE_LIBSSL
#ifdef HAVE_LIBGCRYPT
#include <gcrypt.h>
#endif // HAVE_LIBGCRYPT
class MessageDigestContext {
public:
enum HashAlgo {
ALGO_MD5,
ALGO_SHA1
};
#ifdef HAVE_LIBSSL
EVP_MD_CTX ctx;
const EVP_MD* algo;
#endif // HAVE_LIBSSL
#ifdef HAVE_LIBGCRYPT
gcry_md_hd_t ctx;
int algo;
#endif // HAVE_LIBGCRYPT
MessageDigestContext() {}
MessageDigestContext(HashAlgo algo) {
setAlgo(algo);
}
void setAlgo(HashAlgo algo) {
switch(algo) {
case ALGO_MD5:
#ifdef HAVE_LIBSSL
this->algo = EVP_md5();
#endif // HAVE_LIBSSL
#ifdef HAVE_LIBGCRYPT
this->algo = GCRY_MD_MD5;
#endif // HAVE_LIBGCRYPT
break;
case ALGO_SHA1:
#ifdef HAVE_LIBSSL
this->algo = EVP_sha1();
#endif // HAVE_LIBSSL
#ifdef HAVE_LIBGCRYPT
this->algo = GCRY_MD_SHA1;
#endif // HAVE_LIBGCRYPT
break;
default:
break;
}
}
};
#ifdef HAVE_LIBSSL
#define digestInit(CTX) EVP_MD_CTX_init(&CTX.ctx)
#define digestReset(CTX) EVP_DigestInit_ex(&CTX.ctx, CTX.algo, NULL)
#define digestUpdate(CTX, DATA, LENGTH) EVP_DigestUpdate(&CTX.ctx, DATA, LENGTH)
#define digestFinal(CTX, HASH) \
{\
int len;\
EVP_DigestFinal_ex(&CTX.ctx, HASH, (unsigned int*)&len);\
}
#define digestFree(CTX) EVP_MD_CTX_cleanup(&CTX.ctx)
#endif // HAVE_LIBSSL
#ifdef HAVE_LIBGCRYPT
#define digestInit(CTX) gcry_md_open(&CTX.ctx, CTX.algo, 0)
#define digestReset(CTX) gcry_md_reset(CTX.ctx)
#define digestUpdate(CTX, DATA, LENGTH) gcry_md_write(CTX.ctx, DATA, LENGTH)
#define digestFinal(CTX, HASH) \
{\
gcry_md_final(CTX.ctx);\
memcpy(HASH, gcry_md_read(CTX.ctx, 0), gcry_md_get_algo_dlen(CTX.algo));\
}
#define digestFree(CTX) gcry_md_close(CTX.ctx)
#endif // HAVE_LIBGCRYPT
#endif // ENABLE_SSL
#endif // _D_MESSAGE_DIGEST_H_
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