96 lines
2.6 KiB
C
Executable file
96 lines
2.6 KiB
C
Executable file
/*
|
|
* Copyright (c) 2010 Mans Rullgard
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "libavutil/avstring.h"
|
|
#include "libavutil/md5.h"
|
|
#include "libavutil/mem.h"
|
|
#include "libavutil/error.h"
|
|
#include "avformat.h"
|
|
#include "avio.h"
|
|
#include "url.h"
|
|
|
|
struct MD5Context {
|
|
struct AVMD5 *md5;
|
|
};
|
|
|
|
static int md5_open(URLContext *h, const char *filename, int flags)
|
|
{
|
|
struct MD5Context *c = h->priv_data;
|
|
|
|
if (!(flags & AVIO_FLAG_WRITE))
|
|
return AVERROR(EINVAL);
|
|
|
|
c->md5 = av_md5_alloc();
|
|
if (!c->md5)
|
|
return AVERROR(ENOMEM);
|
|
av_md5_init(c->md5);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int md5_write(URLContext *h, const unsigned char *buf, int size)
|
|
{
|
|
struct MD5Context *c = h->priv_data;
|
|
av_md5_update(c->md5, buf, size);
|
|
return size;
|
|
}
|
|
|
|
static int md5_close(URLContext *h)
|
|
{
|
|
struct MD5Context *c = h->priv_data;
|
|
const char *filename = h->filename;
|
|
uint8_t md5[16], buf[64];
|
|
URLContext *out;
|
|
int i, err = 0;
|
|
|
|
av_md5_final(c->md5, md5);
|
|
for (i = 0; i < sizeof(md5); i++)
|
|
snprintf(buf + i*2, 3, "%02x", md5[i]);
|
|
buf[i*2] = '\n';
|
|
|
|
av_strstart(filename, "md5:", &filename);
|
|
|
|
if (*filename) {
|
|
err = ffurl_open_whitelist(&out, filename, AVIO_FLAG_WRITE,
|
|
&h->interrupt_callback, NULL,
|
|
h->protocol_whitelist, h->protocol_blacklist, h);
|
|
if (err)
|
|
return err;
|
|
err = ffurl_write(out, buf, i*2+1);
|
|
ffurl_close(out);
|
|
} else {
|
|
if (fwrite(buf, 1, i*2+1, stdout) < i*2+1)
|
|
err = AVERROR(errno);
|
|
}
|
|
|
|
av_freep(&c->md5);
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
const URLProtocol ff_md5_protocol = {
|
|
.name = "md5",
|
|
.url_open = md5_open,
|
|
.url_write = md5_write,
|
|
.url_close = md5_close,
|
|
.priv_data_size = sizeof(struct MD5Context),
|
|
};
|