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// Major parts based on:
/*****************************************************************************
* access.c: uncompressed RAR access
*****************************************************************************
* Copyright (C) 2008-2010 Laurent Aimar
* $Id: dcd973529e0029abe326d31f8d58cd13bbcc276c $
*
* Author: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#include "config.h"
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include "osdep/io.h"
#include "common/msg.h"
#include "stream.h"
#include "options/m_option.h"
#include "rar.h"
/*
This works as follows:
- stream_open() with file01.rar
- is opened as normal file (stream_file.c or others) first
- demux_rar.c detects it
- if multi-part, opens file02.rar, file03.rar, etc. as actual streams
- it returns a playlist with entries like this to the player:
rar://bla01.rar|subfile.mkv
(one such entry for each file contained in the rar)
- stream_open() with the playlist entry, e.g. rar://bla01.rar|subfile.mkv
- leads to rar_entry_open()
- opens bla01.rar etc. again as actual streams
- read accesses go into subfile.mkv contained in the rar file(s)
*/
static int rar_entry_fill_buffer(stream_t *s, char *buffer, int max_len)
{
rar_file_t *rar_file = s->priv;
return RarRead(rar_file, buffer, max_len);
}
static int rar_entry_seek(stream_t *s, int64_t newpos)
{
rar_file_t *rar_file = s->priv;
return RarSeek(rar_file, newpos);
}
static void rar_entry_close(stream_t *s)
{
rar_file_t *rar_file = s->priv;
RarFileDelete(rar_file);
}
static int rar_entry_control(stream_t *s, int cmd, void *arg)
{
rar_file_t *rar_file = s->priv;
switch (cmd) {
case STREAM_CTRL_GET_BASE_FILENAME:
*(char **)arg = talloc_strdup(NULL, rar_file->s->url);
return STREAM_OK;
case STREAM_CTRL_GET_SIZE:
*(int64_t *)arg = rar_file->size;
return STREAM_OK;
}
return STREAM_UNSUPPORTED;
}
static int rar_entry_open(stream_t *stream)
{
if (!strchr(stream->path, '|'))
return STREAM_ERROR;
char *base = talloc_strdup(stream, stream->path);
char *name = strchr(base, '|');
*name++ = '\0';
mp_url_unescape_inplace(base);
struct stream *rar = stream_create(base, STREAM_READ | STREAM_SAFE_ONLY,
stream->cancel, stream->global);
if (!rar)
return STREAM_ERROR;
int count;
rar_file_t **files;
if (RarProbe(rar) || RarParse(rar, &count, &files)) {
free_stream(rar);
return STREAM_ERROR;
}
rar_file_t *file = NULL;
for (int i = 0; i < count; i++) {
if (!file && strcmp(files[i]->name, name) == 0)
file = files[i];
else
RarFileDelete(files[i]);
}
talloc_free(files);
if (!file) {
free_stream(rar);
return STREAM_ERROR;
}
rar_file_chunk_t dummy = {
.mrl = base,
};
file->current_chunk = &dummy;
file->s = rar; // transfer ownership
file->cancel = stream->cancel;
file->global = stream->global;
RarSeek(file, 0);
stream->priv = file;
stream->fill_buffer = rar_entry_fill_buffer;
stream->seek = rar_entry_seek;
stream->seekable = true;
stream->close = rar_entry_close;
stream->control = rar_entry_control;
return STREAM_OK;
}
const stream_info_t stream_info_rar = {
.name = "rar",
.open = rar_entry_open,
.protocols = (const char*const[]){ "rar", NULL },
};
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