1 /*****************************************************************************
2 * file.c: file input (file: access plug-in)
3 *****************************************************************************
4 * Copyright (C) 2001-2006 the VideoLAN team
5 * Copyright © 2006-2007 Rémi Denis-Courmont
8 * Authors: Christophe Massiot <massiot@via.ecp.fr>
9 * Rémi Denis-Courmont <rem # videolan # org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
30 #include <vlc_common.h>
32 #include <vlc_input.h>
33 #include <vlc_access.h>
34 #include <vlc_dialog.h>
38 #include <sys/types.h>
39 #ifdef HAVE_SYS_STAT_H
40 # include <sys/stat.h>
46 # include <sys/statvfs.h>
47 # if defined (HAVE_SYS_MOUNT_H)
48 # include <sys/param.h>
49 # include <sys/mount.h>
52 #ifdef HAVE_LINUX_MAGIC_H
54 # include <linux/magic.h>
66 #if defined( WIN32 ) && !defined( UNDER_CE )
70 # define lseek _lseeki64
71 #elif defined( UNDER_CE )
72 /* FIXME the commandline on wince is a mess */
73 # define PathIsNetworkPathW(wpath) (! wcsncmp(wpath, L"\\\\", 2))
81 unsigned int i_nb_reads;
91 static bool IsRemote (int fd)
93 #if defined (HAVE_FSTATVFS) && defined (MNT_LOCAL)
96 if (fstatvfs (fd, &stf))
98 /* fstatvfs() is in POSIX, but MNT_LOCAL is not */
99 return !(stf.f_flag & MNT_LOCAL);
101 #elif defined (HAVE_LINUX_MAGIC_H)
104 if (fstatfs (fd, &stf))
109 case AFS_SUPER_MAGIC:
110 case CODA_SUPER_MAGIC:
111 case NCP_SUPER_MAGIC:
112 case NFS_SUPER_MAGIC:
113 case SMB_SUPER_MAGIC:
114 case 0xFF534D42 /*CIFS_MAGIC_NUMBER*/:
127 #ifndef HAVE_POSIX_FADVISE
128 # define posix_fadvise(fd, off, len, adv)
131 /*****************************************************************************
132 * Open: open the file
133 *****************************************************************************/
134 int Open( vlc_object_t *p_this )
136 access_t *p_access = (access_t*)p_this;
138 bool is_remote = false;
144 if (!strcasecmp (p_access->psz_access, "fd"))
147 int oldfd = strtol (p_access->psz_location, &end, 10);
150 fd = vlc_dup (oldfd);
151 else if (*end == '/' && end > p_access->psz_location)
153 char *name = decode_URI_duplicate (end - 1);
157 fd = vlc_openat (oldfd, name, O_RDONLY | O_NONBLOCK);
164 const char *path = p_access->psz_filepath;
166 msg_Dbg (p_access, "opening file `%s'", path);
167 fd = vlc_open (path, O_RDONLY | O_NONBLOCK);
170 msg_Err (p_access, "cannot open file %s (%m)", path);
171 dialog_Fatal (p_access, _("File reading failed"),
172 _("VLC could not open the file \"%s\"."), path);
176 wchar_t wpath[MAX_PATH+1];
177 if (MultiByteToWideChar (CP_UTF8, 0, path, -1,
179 && PathIsNetworkPathW (wpath))
181 # define IsRemote( fd ) ((void)fd, is_remote)
190 msg_Err (p_access, "failed to read (%m)");
193 /* Directories can be opened and read from, but only readdir() knows
194 * how to parse the data. The directory plugin will do it. */
195 if (S_ISDIR (st.st_mode))
197 #ifdef HAVE_FDOPENDIR
198 DIR *handle = fdopendir (fd);
200 goto error; /* Uh? */
201 return DirInit (p_access, handle);
203 msg_Dbg (p_access, "ignoring directory");
208 access_sys_t *p_sys = malloc (sizeof (*p_sys));
209 if (unlikely(p_sys == NULL))
211 access_InitFields (p_access);
212 p_access->pf_read = FileRead;
213 p_access->pf_block = NULL;
214 p_access->pf_control = FileControl;
215 p_access->pf_seek = FileSeek;
216 p_access->p_sys = p_sys;
217 p_sys->i_nb_reads = 0;
219 p_sys->caching = var_CreateGetInteger (p_access, "file-caching");
221 p_sys->caching += var_CreateGetInteger (p_access, "network-caching");
222 p_sys->b_pace_control = true;
224 if (S_ISREG (st.st_mode))
225 p_access->info.i_size = st.st_size;
226 else if (!S_ISBLK (st.st_mode))
228 p_access->pf_seek = NoSeek;
229 p_sys->b_pace_control = strcasecmp (p_access->psz_access, "stream");
232 if (p_access->pf_seek != NoSeek)
234 /* Demuxers will need the beginning of the file for probing. */
235 posix_fadvise (fd, 0, 4096, POSIX_FADV_WILLNEED);
236 /* In most cases, we only read the file once. */
237 posix_fadvise (fd, 0, 0, POSIX_FADV_NOREUSE);
238 #if defined(HAVE_FCNTL)
239 /* We'd rather use any available memory for reading ahead
240 * than for caching what we've already seen/heard */
241 # if defined(F_RDAHEAD)
242 fcntl (fd, F_RDAHEAD, 1);
244 # if defined(F_NOCACHE)
245 fcntl (fd, F_NOCACHE, 1);
256 /*****************************************************************************
257 * Close: close the target
258 *****************************************************************************/
259 void Close (vlc_object_t * p_this)
261 access_t *p_access = (access_t*)p_this;
263 if (p_access->pf_read == NULL)
269 access_sys_t *p_sys = p_access->p_sys;
276 #include <vlc_network.h>
278 /*****************************************************************************
279 * Read: standard read on a file descriptor.
280 *****************************************************************************/
281 ssize_t FileRead( access_t *p_access, uint8_t *p_buffer, size_t i_len )
283 access_sys_t *p_sys = p_access->p_sys;
288 if (p_access->pf_seek == NoSeek)
289 i_ret = net_Read (p_access, fd, NULL, p_buffer, i_len, false);
292 i_ret = read (fd, p_buffer, i_len);
303 msg_Err (p_access, "failed to read (%m)");
304 dialog_Fatal (p_access, _("File reading failed"), "%s",
305 _("VLC could not read the file."));
306 p_access->info.b_eof = true;
311 p_access->info.i_pos += i_ret;
313 p_access->info.b_eof = true;
317 if ((p_access->info.i_size && !(p_sys->i_nb_reads % INPUT_FSTAT_NB_READS))
318 || (p_access->info.i_pos > p_access->info.i_size))
320 #ifdef HAVE_SYS_STAT_H
323 if ((fstat (fd, &st) == 0)
324 && (p_access->info.i_size != (uint64_t)st.st_size))
326 p_access->info.i_size = st.st_size;
327 p_access->info.i_update |= INPUT_UPDATE_SIZE;
335 /*****************************************************************************
336 * Seek: seek to a specific location in a file
337 *****************************************************************************/
338 int FileSeek (access_t *p_access, uint64_t i_pos)
340 p_access->info.i_pos = i_pos;
341 p_access->info.b_eof = false;
343 lseek (p_access->p_sys->fd, i_pos, SEEK_SET);
347 int NoSeek (access_t *p_access, uint64_t i_pos)
350 (void) p_access; (void) i_pos;
354 /*****************************************************************************
356 *****************************************************************************/
357 int FileControl( access_t *p_access, int i_query, va_list args )
359 access_sys_t *p_sys = p_access->p_sys;
366 case ACCESS_CAN_SEEK:
367 case ACCESS_CAN_FASTSEEK:
368 pb_bool = (bool*)va_arg( args, bool* );
369 *pb_bool = (p_access->pf_seek != NoSeek);
372 case ACCESS_CAN_PAUSE:
373 case ACCESS_CAN_CONTROL_PACE:
374 pb_bool = (bool*)va_arg( args, bool* );
375 *pb_bool = p_sys->b_pace_control;
379 case ACCESS_GET_PTS_DELAY:
380 pi_64 = (int64_t*)va_arg( args, int64_t * );
381 *pi_64 = p_sys->caching * INT64_C(1000);
385 case ACCESS_SET_PAUSE_STATE:
389 case ACCESS_GET_TITLE_INFO:
390 case ACCESS_SET_TITLE:
391 case ACCESS_SET_SEEKPOINT:
392 case ACCESS_SET_PRIVATE_ID_STATE:
393 case ACCESS_GET_META:
394 case ACCESS_GET_PRIVATE_ID_STATE:
395 case ACCESS_GET_CONTENT_TYPE:
399 msg_Warn( p_access, "unimplemented query %d in control", i_query );