mirror of
https://github.com/etlegacy/etlegacy-libs.git
synced 2024-11-12 23:54:31 +00:00
125 lines
3.7 KiB
C
125 lines
3.7 KiB
C
/* mdXhl.c
|
|
* ----------------------------------------------------------------------------
|
|
* "THE BEER-WARE LICENSE" (Revision 42):
|
|
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
|
|
* can do whatever you want with this stuff. If we meet some day, and you think
|
|
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
|
|
* ----------------------------------------------------------------------------
|
|
* libjpeg-turbo Modifications:
|
|
* Copyright (C)2016, 2018-2019 D. R. Commander. 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 name of the libjpeg-turbo Project 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 THE COPYRIGHT HOLDERS OR CONTRIBUTORS 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 <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#ifdef _WIN32
|
|
#include <io.h>
|
|
#define close _close
|
|
#define fstat _fstat
|
|
#define lseek _lseek
|
|
#define read _read
|
|
#define stat _stat
|
|
#else
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#define LENGTH 16
|
|
|
|
#include "./md5.h"
|
|
|
|
static char *MD5End(MD5_CTX *ctx, char *buf)
|
|
{
|
|
int i;
|
|
unsigned char digest[LENGTH];
|
|
static const char hex[] = "0123456789abcdef";
|
|
|
|
if (!buf)
|
|
buf = malloc(2 * LENGTH + 1);
|
|
if (!buf)
|
|
return 0;
|
|
MD5Final(digest, ctx);
|
|
for (i = 0; i < LENGTH; i++) {
|
|
buf[i + i] = hex[digest[i] >> 4];
|
|
buf[i + i + 1] = hex[digest[i] & 0x0f];
|
|
}
|
|
buf[i + i] = '\0';
|
|
return buf;
|
|
}
|
|
|
|
char *MD5File(const char *filename, char *buf)
|
|
{
|
|
return (MD5FileChunk(filename, buf, 0, 0));
|
|
}
|
|
|
|
char *MD5FileChunk(const char *filename, char *buf, off_t ofs, off_t len)
|
|
{
|
|
unsigned char buffer[BUFSIZ];
|
|
MD5_CTX ctx;
|
|
struct stat stbuf;
|
|
int f, i, e;
|
|
off_t n;
|
|
|
|
MD5Init(&ctx);
|
|
#ifdef _WIN32
|
|
f = _open(filename, O_RDONLY | O_BINARY);
|
|
#else
|
|
f = open(filename, O_RDONLY);
|
|
#endif
|
|
if (f < 0)
|
|
return 0;
|
|
if (fstat(f, &stbuf) < 0)
|
|
return 0;
|
|
if (ofs > stbuf.st_size)
|
|
ofs = stbuf.st_size;
|
|
if ((len == 0) || (len > stbuf.st_size - ofs))
|
|
len = stbuf.st_size - ofs;
|
|
if (lseek(f, ofs, SEEK_SET) < 0)
|
|
return 0;
|
|
n = len;
|
|
i = 0;
|
|
while (n > 0) {
|
|
if (n > sizeof(buffer))
|
|
i = read(f, buffer, sizeof(buffer));
|
|
else
|
|
i = read(f, buffer, n);
|
|
if (i < 0)
|
|
break;
|
|
MD5Update(&ctx, buffer, i);
|
|
n -= i;
|
|
}
|
|
e = errno;
|
|
close(f);
|
|
errno = e;
|
|
if (i < 0)
|
|
return 0;
|
|
return (MD5End(&ctx, buf));
|
|
}
|