130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
/***************************************************************************
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* Copyright (C) 2007 by SukkoPera *
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* sukkopera@sukkology.net *
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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 *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include "multihash.h"
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#include <stdio.h>
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#define READBUF_SIZE 8192
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void multihash_init (multihash *mh) {
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#ifdef USE_CRC32
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(mh -> crc32_s)[0] = '\0';
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mh -> crc32 = 0xffffffff;
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#endif
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#ifdef USE_MD4
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(mh -> md4_s)[0] = '\0';
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md4_starts (&(mh -> md4));
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#endif
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#ifdef USE_MD5
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(mh -> md5_s)[0] = '\0';
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MD5Init (&(mh -> md5));
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#endif
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#ifdef USE_ED2K
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(mh -> ed2k_s)[0] = '\0';
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ed2khash_starts (&(mh -> ed2k));
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#endif
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#ifdef USE_SHA1
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(mh -> sha1_s)[0] = '\0';
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SHA1Init (&(mh -> sha1));
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#endif
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return;
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}
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void multihash_update (multihash *mh, unsigned char *data, int bytes) {
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#ifdef USE_CRC32
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mh -> crc32 = CrcUpdate (mh -> crc32, data, bytes);
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#endif
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#ifdef USE_MD4
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// md4_update (&(mh -> md4), data, bytes);
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#endif
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#ifdef USE_MD5
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MD5Update (&(mh -> md5), data, bytes);
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#endif
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#ifdef USE_ED2K
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// ed2khash_update (&(mh -> ed2k), data, bytes);
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#endif
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#ifdef USE_SHA1
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SHA1Update (&(mh -> sha1), data, bytes); /* WARNING: SHA1Update() destroys data! */
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#endif
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return;
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}
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void multihash_finish (multihash *mh) {
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unsigned char buf[MAX_DIGESTSIZE];
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int bytes;
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#ifdef USE_CRC32
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mh -> crc32 ^= 0xffffffff;
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snprintf (mh -> crc32_s, LEN_CRC32 + 1, "%08x", mh -> crc32);
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#endif
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#ifdef USE_MD4
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md4_finish (&(mh -> md4), buf);
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for (bytes = 0; bytes < LEN_MD4 / 2; bytes++)
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sprintf (mh -> md4_s, "%s%02x", mh -> md4_s, buf[bytes]);
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(mh -> md4_s)[LEN_MD4] = '\0';
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#endif
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#ifdef USE_MD5
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MD5Final (&(mh -> md5));
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for (bytes = 0; bytes < LEN_MD5 / 2; bytes++)
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sprintf (mh -> md5_s, "%s%02x", mh -> md5_s, (mh -> md5).digest[bytes]);
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(mh -> md5_s)[LEN_MD5] = '\0';
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#endif
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#ifdef USE_ED2K
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ed2khash_finish (&(mh -> ed2k), buf);
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for (bytes = 0; bytes < LEN_ED2K / 2; bytes++)
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sprintf (mh -> ed2k_s, "%s%02x", mh -> ed2k_s, buf[bytes]);
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(mh -> ed2k_s)[LEN_ED2K] = '\0';
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#endif
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#ifdef USE_SHA1
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SHA1Final (buf, &(mh -> sha1));
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for (bytes = 0; bytes < LEN_SHA1 / 2; bytes++)
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sprintf (mh -> sha1_s, "%s%02x", mh -> sha1_s, buf[bytes]);
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(mh -> sha1_s)[LEN_SHA1] = '\0';
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#endif
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return;
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}
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int multihash_file (multihash *mh, char *filename) {
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FILE *fp;
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int bytes, out;
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unsigned char data[READBUF_SIZE];
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multihash_init (mh);
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if ((fp = fopen (filename, "r"))) {
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while ((bytes = fread (data, 1, READBUF_SIZE, fp)) != 0)
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multihash_update (mh, data, bytes);
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multihash_finish (mh);
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fclose (fp);
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out = 0;
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} else {
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/* Cannot open file */
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out = -1;
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}
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return (out);
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}
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