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/*
* This file is part of MPlayer.
*
* Original authors: Albeu, probably Arpi
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; 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"
struct priv {
int fd;
bool close;
};
static int fill_buffer(stream_t *s, char *buffer, int max_len)
{
struct priv *p = s->priv;
int r = read(p->fd, buffer, max_len);
return (r <= 0) ? -1 : r;
}
static int write_buffer(stream_t *s, char *buffer, int len)
{
struct priv *p = s->priv;
int r;
int wr = 0;
while (wr < len) {
r = write(p->fd, buffer, len);
if (r <= 0)
return -1;
wr += r;
buffer += r;
}
return len;
}
static int seek(stream_t *s, int64_t newpos)
{
struct priv *p = s->priv;
return lseek(p->fd, newpos, SEEK_SET) != (off_t)-1;
}
static int control(stream_t *s, int cmd, void *arg)
{
struct priv *p = s->priv;
switch (cmd) {
case STREAM_CTRL_GET_SIZE: {
off_t size;
size = lseek(p->fd, 0, SEEK_END);
lseek(p->fd, s->pos, SEEK_SET);
if (size != (off_t)-1) {
*(uint64_t *)arg = size;
return 1;
}
}
}
return STREAM_UNSUPPORTED;
}
static void s_close(stream_t *s)
{
struct priv *p = s->priv;
if (p->close && p->fd >= 0)
close(p->fd);
}
static int open_f(stream_t *stream, int mode)
{
int fd;
char *filename = stream->path;
struct priv *priv = talloc_ptrtype(stream, priv);
*priv = (struct priv) {
.fd = -1
};
stream->priv = priv;
int m = O_CLOEXEC;
if (mode == STREAM_READ)
m |= O_RDONLY;
else if (mode == STREAM_WRITE)
m |= O_RDWR | O_CREAT | O_TRUNC;
else {
MP_ERR(stream, "Unknown open mode %d\n", mode);
return STREAM_UNSUPPORTED;
}
// "file://" prefix -> decode URL-style escapes
if (strlen(stream->url) > strlen(stream->path))
mp_url_unescape_inplace(stream->path);
#if HAVE_DOS_PATHS
// extract '/' from '/x:/path'
if (filename[0] == '/' && filename[1] && filename[2] == ':')
filename++;
#endif
if (!strcmp(filename, "-")) {
if (mode == STREAM_READ) {
MP_INFO(stream, "Reading from stdin...\n");
fd = 0;
#if HAVE_SETMODE
setmode(fileno(stdin), O_BINARY);
#endif
} else {
MP_INFO(stream, "Writing to stdout\n");
fd = 1;
#if HAVE_SETMODE
setmode(fileno(stdout), O_BINARY);
#endif
}
priv->fd = fd;
priv->close = false;
} else {
mode_t openmode = S_IRUSR | S_IWUSR;
#ifndef __MINGW32__
openmode |= S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
#endif
fd = open(filename, m | O_BINARY, openmode);
if (fd < 0) {
MP_ERR(stream, "Cannot open file '%s': %s\n",
filename, strerror(errno));
return STREAM_ERROR;
}
#ifndef __MINGW32__
struct stat st;
if (fstat(fd, &st) == 0 && S_ISDIR(st.st_mode)) {
MP_ERR(stream, "File is a directory: '%s'\n",
filename);
close(fd);
return STREAM_ERROR;
}
#endif
priv->fd = fd;
priv->close = true;
}
int64_t len = lseek(fd, 0, SEEK_END);
lseek(fd, 0, SEEK_SET);
#ifdef __MINGW32__
// seeks on stdin incorrectly succeed on MinGW
if (fd == 0)
len = -1;
#endif
stream->type = STREAMTYPE_FILE;
stream->flags = MP_STREAM_FAST_SKIPPING;
if (len >= 0) {
stream->seek = seek;
stream->end_pos = len;
}
MP_VERBOSE(stream, "File size is %" PRId64 " bytes\n", len);
stream->fill_buffer = fill_buffer;
stream->write_buffer = write_buffer;
stream->control = control;
stream->read_chunk = 64 * 1024;
stream->close = s_close;
return STREAM_OK;
}
const stream_info_t stream_info_file = {
.name = "file",
.open = open_f,
.protocols = (const char*[]){ "file", "", NULL },
};
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