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/*
* Original author: M. Tourne
*
* This file is part of mpv.
*
* mpv 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 3 of the License, or
* (at your option) any later version.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <libsmbclient.h>
#include <unistd.h>
#include <pthread.h>
#include "common/msg.h"
#include "stream.h"
#include "options/m_option.h"
#include "config.h"
#if !HAVE_GPL
#error GPL only
#endif
static pthread_mutex_t smb_lock = PTHREAD_MUTEX_INITIALIZER;
struct priv {
int fd;
};
static void smb_auth_fn(const char *server, const char *share,
char *workgroup, int wgmaxlen, char *username, int unmaxlen,
char *password, int pwmaxlen)
{
strncpy(workgroup, "LAN", wgmaxlen - 1);
workgroup[wgmaxlen - 1] = '\0';
}
static int control(stream_t *s, int cmd, void *arg) {
struct priv *p = s->priv;
switch(cmd) {
case STREAM_CTRL_GET_SIZE: {
pthread_mutex_lock(&smb_lock);
off_t size = smbc_lseek(p->fd,0,SEEK_END);
smbc_lseek(p->fd,s->pos,SEEK_SET);
pthread_mutex_unlock(&smb_lock);
if(size != (off_t)-1) {
*(int64_t *)arg = size;
return 1;
}
}
break;
}
return STREAM_UNSUPPORTED;
}
static int seek(stream_t *s,int64_t newpos) {
struct priv *p = s->priv;
pthread_mutex_lock(&smb_lock);
off_t size = smbc_lseek(p->fd,newpos,SEEK_SET);
pthread_mutex_unlock(&smb_lock);
if(size<0) {
return 0;
}
return 1;
}
static int fill_buffer(stream_t *s, char* buffer, int max_len){
struct priv *p = s->priv;
pthread_mutex_lock(&smb_lock);
int r = smbc_read(p->fd,buffer,max_len);
pthread_mutex_unlock(&smb_lock);
return (r <= 0) ? -1 : r;
}
static int write_buffer(stream_t *s, char* buffer, int len) {
struct priv *p = s->priv;
int r = len;
int wr;
while (r > 0) {
pthread_mutex_lock(&smb_lock);
wr = smbc_write(p->fd,buffer,r);
pthread_mutex_unlock(&smb_lock);
if (wr <= 0)
return -1;
r -= wr;
buffer += wr;
}
return len - r;
}
static void close_f(stream_t *s){
struct priv *p = s->priv;
pthread_mutex_lock(&smb_lock);
smbc_close(p->fd);
pthread_mutex_unlock(&smb_lock);
}
static int open_f (stream_t *stream)
{
char *filename;
int64_t len;
int fd, err;
struct priv *priv = talloc_zero(stream, struct priv);
stream->priv = priv;
filename = stream->url;
bool write = stream->mode == STREAM_WRITE;
mode_t m = write ? O_RDWR|O_CREAT|O_TRUNC : O_RDONLY;
if(!filename) {
MP_ERR(stream, "[smb] Bad url\n");
return STREAM_ERROR;
}
pthread_mutex_lock(&smb_lock);
err = smbc_init(smb_auth_fn, 1);
pthread_mutex_unlock(&smb_lock);
if (err < 0) {
MP_ERR(stream, "Cannot init the libsmbclient library: %d\n",err);
return STREAM_ERROR;
}
pthread_mutex_lock(&smb_lock);
fd = smbc_open(filename, m,0644);
pthread_mutex_unlock(&smb_lock);
if (fd < 0) {
MP_ERR(stream, "Could not open from LAN: '%s'\n", filename);
return STREAM_ERROR;
}
len = 0;
if(!write) {
pthread_mutex_lock(&smb_lock);
len = smbc_lseek(fd,0,SEEK_END);
smbc_lseek (fd, 0, SEEK_SET);
pthread_mutex_unlock(&smb_lock);
}
if(len > 0 || write) {
stream->seekable = true;
stream->seek = seek;
}
priv->fd = fd;
stream->fill_buffer = fill_buffer;
stream->write_buffer = write_buffer;
stream->close = close_f;
stream->control = control;
stream->read_chunk = 128 * 1024;
stream->streaming = true;
return STREAM_OK;
}
const stream_info_t stream_info_smb = {
.name = "smb",
.open = open_f,
.protocols = (const char*const[]){"smb", NULL},
.can_write = true, //who's gonna do that?
};
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