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 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
33 #include <vlc_common.h>
34 #include <vlc_plugin.h>
35 #include <vlc_input.h>
36 #include <vlc_access.h>
37 #include <vlc_dialog.h>
41 #ifdef HAVE_SYS_TYPES_H
42 # include <sys/types.h>
44 #ifdef HAVE_SYS_STAT_H
45 # include <sys/stat.h>
50 #if defined (__linux__)
52 # include <linux/magic.h>
53 # define HAVE_FSTATFS 1
54 #elif defined (HAVE_SYS_MOUNT_H)
55 # include <sys/mount.h>
56 # define HAVE_FSTATFS 1
67 #if defined( WIN32 ) && !defined( UNDER_CE )
71 # define lseek _lseeki64
72 #elif defined( UNDER_CE )
73 /* FIXME the commandline on wince is a mess */
77 #include <vlc_charset.h>
79 /*****************************************************************************
81 *****************************************************************************/
82 static int Open ( vlc_object_t * );
83 static void Close( vlc_object_t * );
85 #define CACHING_TEXT N_("Caching value (ms)")
86 #define CACHING_LONGTEXT N_( \
87 "Caching value for files, in milliseconds." )
89 #define NETWORK_CACHING_TEXT N_("Extra network caching value (ms)")
90 #define NETWORK_CACHING_LONGTEXT N_( \
91 "Supplementary caching value for remote files, in milliseconds." )
94 set_description( N_("File input") )
95 set_shortname( N_("File") )
96 set_category( CAT_INPUT )
97 set_subcategory( SUBCAT_INPUT_ACCESS )
98 add_integer( "file-caching", DEFAULT_PTS_DELAY / 1000, NULL,
99 CACHING_TEXT, CACHING_LONGTEXT, true )
101 add_integer( "network-caching", 3 * DEFAULT_PTS_DELAY / 1000, NULL,
102 NETWORK_CACHING_TEXT, NETWORK_CACHING_LONGTEXT, true )
104 add_obsolete_string( "file-cat" )
105 set_capability( "access", 50 )
106 add_shortcut( "file" )
108 add_shortcut( "stream" )
109 set_callbacks( Open, Close )
113 /*****************************************************************************
114 * Exported prototypes
115 *****************************************************************************/
116 static int Seek( access_t *, int64_t );
117 static int NoSeek( access_t *, int64_t );
118 static ssize_t Read( access_t *, uint8_t *, size_t );
119 static int Control( access_t *, int, va_list );
121 static int open_file( access_t *, const char * );
125 unsigned int i_nb_reads;
134 static bool IsRemote (int fd)
139 if (fstatfs (fd, &stf))
142 #if defined(MNT_LOCAL)
143 return !(stf.f_flags & MNT_LOCAL);
145 #elif defined (__linux__)
148 case AFS_SUPER_MAGIC:
149 case CODA_SUPER_MAGIC:
150 case NCP_SUPER_MAGIC:
151 case NFS_SUPER_MAGIC:
152 case SMB_SUPER_MAGIC:
153 case 0xFF534D42 /*CIFS_MAGIC_NUMBER*/:
159 #else /* !HAVE_FSTATFS */
167 /*****************************************************************************
168 * Open: open the file
169 *****************************************************************************/
170 static int Open( vlc_object_t *p_this )
172 access_t *p_access = (access_t*)p_this;
175 STANDARD_READ_ACCESS_INIT;
176 p_sys->i_nb_reads = 0;
177 p_sys->b_pace_control = true;
182 if (!strcasecmp (p_access->psz_access, "fd"))
183 fd = dup (atoi (p_access->psz_path));
184 else if (!strcmp (p_access->psz_path, "-"))
188 msg_Dbg (p_access, "opening file `%s'", p_access->psz_path);
189 fd = open_file (p_access, p_access->psz_path);
194 #ifdef HAVE_SYS_STAT_H
199 msg_Err (p_access, "failed to read (%m)");
202 /* Directories can be opened and read from, but only readdir() knows
203 * how to parse the data. The directory plugin will do it. */
204 if (S_ISDIR (st.st_mode))
206 msg_Dbg (p_access, "ignoring directory");
209 if (S_ISREG (st.st_mode))
210 p_access->info.i_size = st.st_size;
211 else if (!S_ISBLK (st.st_mode))
213 p_access->pf_seek = NoSeek;
214 p_sys->b_pace_control = strcasecmp (p_access->psz_access, "stream");
217 # warning File size not known!
220 p_sys->caching = var_CreateGetInteger (p_access, "file-caching");
222 p_sys->caching += var_CreateGetInteger (p_access, "network-caching");
234 /*****************************************************************************
235 * Close: close the target
236 *****************************************************************************/
237 static void Close (vlc_object_t * p_this)
239 access_t *p_access = (access_t*)p_this;
240 access_sys_t *p_sys = p_access->p_sys;
247 #include <vlc_network.h>
249 /*****************************************************************************
250 * Read: standard read on a file descriptor.
251 *****************************************************************************/
252 static ssize_t Read( access_t *p_access, uint8_t *p_buffer, size_t i_len )
254 access_sys_t *p_sys = p_access->p_sys;
259 if (p_access->pf_seek == NoSeek)
260 i_ret = net_Read (p_access, fd, NULL, p_buffer, i_len, false);
263 i_ret = read (fd, p_buffer, i_len);
274 msg_Err (p_access, "failed to read (%m)");
275 dialog_Fatal (p_access, _("File reading failed"), "%s",
276 _("VLC could not read the file."));
277 p_access->info.b_eof = true;
282 p_access->info.i_pos += i_ret;
284 p_access->info.b_eof = true;
288 #ifdef HAVE_SYS_STAT_H
289 if ((p_access->info.i_size && !(p_sys->i_nb_reads % INPUT_FSTAT_NB_READS))
290 || (p_access->info.i_pos > p_access->info.i_size))
294 if ((fstat (fd, &st) == 0)
295 && (p_access->info.i_size != st.st_size))
297 p_access->info.i_size = st.st_size;
298 p_access->info.i_update |= INPUT_UPDATE_SIZE;
306 /*****************************************************************************
307 * Seek: seek to a specific location in a file
308 *****************************************************************************/
309 static int Seek (access_t *p_access, int64_t i_pos)
311 p_access->info.i_pos = i_pos;
312 p_access->info.b_eof = false;
314 lseek (p_access->p_sys->fd, i_pos, SEEK_SET);
318 static int NoSeek (access_t *p_access, int64_t i_pos)
321 (void) p_access; (void) i_pos;
325 /*****************************************************************************
327 *****************************************************************************/
328 static int Control( access_t *p_access, int i_query, va_list args )
330 access_sys_t *p_sys = p_access->p_sys;
337 case ACCESS_CAN_SEEK:
338 case ACCESS_CAN_FASTSEEK:
339 pb_bool = (bool*)va_arg( args, bool* );
340 *pb_bool = (p_access->pf_seek != NoSeek);
343 case ACCESS_CAN_PAUSE:
344 case ACCESS_CAN_CONTROL_PACE:
345 pb_bool = (bool*)va_arg( args, bool* );
346 *pb_bool = p_sys->b_pace_control;
350 case ACCESS_GET_PTS_DELAY:
351 pi_64 = (int64_t*)va_arg( args, int64_t * );
352 *pi_64 = p_sys->caching * INT64_C(1000);
356 case ACCESS_SET_PAUSE_STATE:
360 case ACCESS_GET_TITLE_INFO:
361 case ACCESS_SET_TITLE:
362 case ACCESS_SET_SEEKPOINT:
363 case ACCESS_SET_PRIVATE_ID_STATE:
364 case ACCESS_GET_META:
365 case ACCESS_GET_PRIVATE_ID_STATE:
366 case ACCESS_GET_CONTENT_TYPE:
370 msg_Warn( p_access, "unimplemented query %d in control", i_query );
377 /*****************************************************************************
378 * open_file: Opens a specific file
379 *****************************************************************************/
380 static int open_file (access_t *p_access, const char *path)
383 if (!strcasecmp (p_access->psz_access, "file")
384 && ('/' == path[0]) && isalpha (path[1])
385 && (':' == path[2]) && ('/' == path[3]))
386 /* Explorer can open path such as file:/C:/ or file:///C:/
387 * hence remove leading / if found */
391 int fd = utf8_open (path, O_RDONLY | O_NONBLOCK /* O_LARGEFILE*/, 0666);
394 msg_Err (p_access, "cannot open file %s (%m)", path);
395 dialog_Fatal (p_access, _("File reading failed"),
396 _("VLC could not open the file \"%s\"."), path);
400 #if defined(HAVE_FCNTL)
401 /* We'd rather use any available memory for reading ahead
402 * than for caching what we've already seen/heard */
403 # if defined(F_RDAHEAD)
404 fcntl (fd, F_RDAHEAD, 1);
406 # if defined(F_NOCACHE)
407 fcntl (fd, F_NOCACHE, 1);