150 lines
3.2 KiB
C
150 lines
3.2 KiB
C
/*
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* Copyright (c) 2002 Fabrice Bellard
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* Copyright (c) 2013 Michael Niedermayer
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* Copyright (c) 2013 James Almer
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; 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 "config.h"
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#include "libavutil/error.h"
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#include "libavutil/hash.h"
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#include "libavutil/mem.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#if HAVE_IO_H
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#include <io.h>
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#endif
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#define SIZE 65536
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static struct AVHashContext *hash;
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static uint8_t *res;
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static void usage(void)
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{
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int i = 0;
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const char *name;
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printf("usage: ffhash [algorithm] [input]...\n");
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printf("Supported hash algorithms:");
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do {
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name = av_hash_names(i);
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if (name)
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printf(" %s", name);
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i++;
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} while(name);
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printf("\n");
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}
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static void finish(void)
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{
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int i, len = av_hash_get_size(hash);
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printf("%s=0x", av_hash_get_name(hash));
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av_hash_final(hash, res);
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for (i = 0; i < len; i++)
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printf("%02x", res[i]);
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}
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static int check(char *file)
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{
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uint8_t buffer[SIZE];
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int fd, flags = O_RDONLY;
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int ret = 0;
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#ifdef O_BINARY
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flags |= O_BINARY;
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#endif
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if (file) fd = open(file, flags);
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else fd = 0;
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if (fd == -1) {
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printf("%s=OPEN-FAILED: %s:", av_hash_get_name(hash), strerror(errno));
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ret = 1;
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goto end;
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}
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av_hash_init(hash);
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for (;;) {
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ssize_t size = read(fd, buffer, SIZE);
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if (size < 0) {
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close(fd);
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finish();
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printf("+READ-FAILED: %s", strerror(errno));
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ret = 2;
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goto end;
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} else if(!size)
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break;
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av_hash_update(hash, buffer, size);
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}
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close(fd);
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finish();
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end:
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if (file)
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printf(" *%s", file);
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printf("\n");
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return ret;
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}
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int main(int argc, char **argv)
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{
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int i;
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int ret = 0;
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if (argc == 1) {
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usage();
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return 0;
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}
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if ((ret = av_hash_alloc(&hash, argv[1])) < 0) {
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switch(ret) {
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case AVERROR(EINVAL):
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printf("Invalid hash type: %s\n", argv[1]);
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break;
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case AVERROR(ENOMEM):
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printf("%s\n", strerror(errno));
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break;
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}
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return 1;
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}
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res = av_malloc(av_hash_get_size(hash));
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if (!res) {
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printf("%s\n", strerror(errno));
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return 1;
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}
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for (i = 2; i < argc; i++)
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ret |= check(argv[i]);
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if (argc < 3)
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ret |= check(NULL);
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av_hash_freep(&hash);
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av_freep(&res);
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return ret;
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}
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