mirror of
https://github.com/s3fs-fuse/s3fs-fuse.git
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99 lines
2.4 KiB
C++
99 lines
2.4 KiB
C++
/*
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* s3fs - FUSE-based file system backed by Amazon S3
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*
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* Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <string>
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#include "s3fs_auth.h"
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#include "string_util.h"
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using namespace std;
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//-------------------------------------------------------------------
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// Utility Function
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//-------------------------------------------------------------------
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string s3fs_get_content_md5(int fd)
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{
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unsigned char* md5hex;
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char* base64;
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string Signature;
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if(NULL == (md5hex = s3fs_md5hexsum(fd, 0, -1))){
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return string("");
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}
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if(NULL == (base64 = s3fs_base64(md5hex, get_md5_digest_length()))){
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return string(""); // ENOMEM
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}
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free(md5hex);
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Signature = base64;
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free(base64);
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return Signature;
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}
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string s3fs_md5sum(int fd, off_t start, ssize_t size)
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{
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size_t digestlen = get_md5_digest_length();
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unsigned char* md5hex;
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if(NULL == (md5hex = s3fs_md5hexsum(fd, start, size))){
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return string("");
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}
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std::string md5 = s3fs_hex(md5hex, digestlen);
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free(md5hex);
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return md5;
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}
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string s3fs_sha256sum(int fd, off_t start, ssize_t size)
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{
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size_t digestlen = get_sha256_digest_length();
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char sha256[2 * digestlen + 1];
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char hexbuf[3];
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unsigned char* sha256hex;
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if(NULL == (sha256hex = s3fs_sha256hexsum(fd, start, size))){
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return string("");
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}
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memset(sha256, 0, 2 * digestlen + 1);
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for(size_t pos = 0; pos < digestlen; pos++){
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snprintf(hexbuf, 3, "%02x", sha256hex[pos]);
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strncat(sha256, hexbuf, 2);
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}
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free(sha256hex);
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return string(sha256);
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}
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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* vim600: noet sw=4 ts=4 fdm=marker
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* vim<600: noet sw=4 ts=4
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*/
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