/*****************************************************************************
* file.c: file input (file: access plug-in)
*****************************************************************************
- * Copyright (C) 2001, 2002 VideoLAN
- * $Id: file.c,v 1.1 2002/08/04 17:23:41 sam Exp $
+ * Copyright (C) 2001-2006 the VideoLAN team
+ * Copyright © 2006-2007 Rémi Denis-Courmont
+ * $Id$
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
+ * Rémi Denis-Courmont <rem # videolan # org>
*
* This program 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.
- *
+ *
* 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
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
-/*****************************************************************************
- * Preamble
- *****************************************************************************/
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <string.h>
-#include <errno.h>
-#include <fcntl.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
-#include <vlc/vlc.h>
-#include <vlc/input.h>
+#include <vlc_common.h>
+#include "fs.h"
+#include <vlc_input.h>
+#include <vlc_access.h>
+#include <vlc_dialog.h>
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#elif defined( _MSC_VER ) && defined( _WIN32 )
+#include <assert.h>
+#include <errno.h>
+#include <sys/types.h>
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#endif
+#ifdef HAVE_FSTATVFS
+# include <sys/statvfs.h>
+# if defined (HAVE_SYS_MOUNT_H)
+# include <sys/param.h>
+# include <sys/mount.h>
+# endif
+#endif
+#ifdef HAVE_LINUX_MAGIC_H
+# include <sys/vfs.h>
+# include <linux/magic.h>
+#endif
+
+#if defined( WIN32 )
# include <io.h>
+# include <ctype.h>
+# include <shlwapi.h>
+#else
+# include <unistd.h>
#endif
+#include <dirent.h>
-/*****************************************************************************
- * Open: open the file
- *****************************************************************************/
-static int Open( vlc_object_t *p_this )
+#if defined( WIN32 ) && !defined( UNDER_CE )
+# ifdef lseek
+# undef lseek
+# endif
+# define lseek _lseeki64
+#elif defined( UNDER_CE )
+/* FIXME the commandline on wince is a mess */
+# define PathIsNetworkPathW(wpath) (! wcsncmp(wpath, L"\\\\", 2))
+#endif
+
+#include <vlc_fs.h>
+#include <vlc_url.h>
+
+struct access_sys_t
{
- input_thread_t * p_input = (input_thread_t *)p_this;
- char * psz_name = p_input->psz_name;
- int i_stat;
- struct stat stat_info;
- input_socket_t * p_access_data;
- vlc_bool_t b_stdin;
+ unsigned int i_nb_reads;
- p_input->i_mtu = 0;
+ int fd;
- b_stdin = psz_name[0] == '-' && psz_name[1] == '\0';
+ /* */
+ unsigned caching;
+ bool b_pace_control;
+};
- if( !b_stdin && (i_stat = stat( psz_name, &stat_info )) == (-1) )
+#ifndef WIN32
+static bool IsRemote (int fd)
+{
+#if defined (HAVE_FSTATVFS) && defined (MNT_LOCAL)
+ struct statvfs stf;
+
+ if (fstatvfs (fd, &stf))
+ return false;
+ /* fstatvfs() is in POSIX, but MNT_LOCAL is not */
+ return !(stf.f_flag & MNT_LOCAL);
+
+#elif defined (HAVE_LINUX_MAGIC_H)
+ struct statfs stf;
+
+ if (fstatfs (fd, &stf))
+ return false;
+
+ switch ((unsigned long)stf.f_type)
{
- msg_Err( p_input, "cannot stat() file `%s' (%s)",
- psz_name, strerror(errno));
- return( -1 );
+ case AFS_SUPER_MAGIC:
+ case CODA_SUPER_MAGIC:
+ case NCP_SUPER_MAGIC:
+ case NFS_SUPER_MAGIC:
+ case SMB_SUPER_MAGIC:
+ case 0xFF534D42 /*CIFS_MAGIC_NUMBER*/:
+ return true;
}
+ return false;
+
+#else
+ (void)fd;
+ return false;
+
+#endif
+}
+#endif
- p_input->pf_read = input_FDRead;
- p_input->pf_set_program = input_SetProgram;
- p_input->pf_set_area = NULL;
- p_input->pf_seek = input_FDSeek;
+#ifndef HAVE_POSIX_FADVISE
+# define posix_fadvise(fd, off, len, adv)
+#endif
+
+/*****************************************************************************
+ * Open: open the file
+ *****************************************************************************/
+int Open( vlc_object_t *p_this )
+{
+ access_t *p_access = (access_t*)p_this;
+#ifdef WIN32
+ bool is_remote = false;
+#endif
- vlc_mutex_lock( &p_input->stream.stream_lock );
+ /* Open file */
+ int fd = -1;
- if( *p_input->psz_access && !strncmp( p_input->psz_access, "stream", 7 ) )
+ if (!strcasecmp (p_access->psz_access, "fd"))
{
- /* stream:%s */
- p_input->stream.b_pace_control = 0;
- p_input->stream.b_seekable = 0;
- p_input->stream.p_selected_area->i_size = 0;
+ char *end;
+ int oldfd = strtol (p_access->psz_location, &end, 10);
+
+ if (*end == '\0')
+ fd = vlc_dup (oldfd);
+ else if (*end == '/' && end > p_access->psz_location)
+ {
+ char *name = decode_URI_duplicate (end - 1);
+ if (name != NULL)
+ {
+ name[0] = '.';
+ fd = vlc_openat (oldfd, name, O_RDONLY | O_NONBLOCK);
+ free (name);
+ }
+ }
}
else
{
- /* file:%s or %s */
- p_input->stream.b_pace_control = 1;
+ const char *path = p_access->psz_filepath;
- if( b_stdin )
- {
- p_input->stream.b_seekable = 0;
- p_input->stream.p_selected_area->i_size = 0;
- }
- else if( S_ISREG(stat_info.st_mode) || S_ISCHR(stat_info.st_mode)
- || S_ISBLK(stat_info.st_mode) )
+ msg_Dbg (p_access, "opening file `%s'", path);
+ fd = vlc_open (path, O_RDONLY | O_NONBLOCK);
+ if (fd == -1)
{
- p_input->stream.b_seekable = 1;
- p_input->stream.p_selected_area->i_size = stat_info.st_size;
+ msg_Err (p_access, "cannot open file %s (%m)", path);
+ dialog_Fatal (p_access, _("File reading failed"),
+ _("VLC could not open the file \"%s\"."), path);
}
- else if( S_ISFIFO(stat_info.st_mode)
-#if !defined( SYS_BEOS ) && !defined( WIN32 )
- || S_ISSOCK(stat_info.st_mode)
+
+#ifdef WIN32
+ wchar_t wpath[MAX_PATH+1];
+ if (MultiByteToWideChar (CP_UTF8, 0, path, -1,
+ wpath, MAX_PATH)
+ && PathIsNetworkPathW (wpath))
+ is_remote = true;
+# define IsRemote( fd ) ((void)fd, is_remote)
#endif
- )
- {
- p_input->stream.b_seekable = 0;
- p_input->stream.p_selected_area->i_size = 0;
- }
- else
- {
- vlc_mutex_unlock( &p_input->stream.stream_lock );
- msg_Err( p_input, "unknown file type for `%s'", psz_name );
- return( -1 );
- }
}
-
- p_input->stream.p_selected_area->i_tell = 0;
- p_input->stream.i_method = INPUT_METHOD_FILE;
- vlc_mutex_unlock( &p_input->stream.stream_lock );
-
- msg_Dbg( p_input, "opening file `%s'", psz_name );
- p_access_data = malloc( sizeof(input_socket_t) );
- p_input->p_access_data = (void *)p_access_data;
- if( p_access_data == NULL )
+ if (fd == -1)
+ return VLC_EGENERIC;
+
+ struct stat st;
+ if (fstat (fd, &st))
+ {
+ msg_Err (p_access, "failed to read (%m)");
+ goto error;
+ }
+ /* Directories can be opened and read from, but only readdir() knows
+ * how to parse the data. The directory plugin will do it. */
+ if (S_ISDIR (st.st_mode))
{
- msg_Err( p_input, "out of memory" );
- return( -1 );
+#ifdef HAVE_FDOPENDIR
+ DIR *handle = fdopendir (fd);
+ if (handle == NULL)
+ goto error; /* Uh? */
+ return DirInit (p_access, handle);
+#else
+ msg_Dbg (p_access, "ignoring directory");
+ goto error;
+#endif
}
- if( b_stdin )
+ access_sys_t *p_sys = malloc (sizeof (*p_sys));
+ if (unlikely(p_sys == NULL))
+ goto error;
+ access_InitFields (p_access);
+ p_access->pf_read = FileRead;
+ p_access->pf_block = NULL;
+ p_access->pf_control = FileControl;
+ p_access->pf_seek = FileSeek;
+ p_access->p_sys = p_sys;
+ p_sys->i_nb_reads = 0;
+ p_sys->fd = fd;
+ p_sys->caching = var_CreateGetInteger (p_access, "file-caching");
+ if (IsRemote(fd))
+ p_sys->caching += var_CreateGetInteger (p_access, "network-caching");
+ p_sys->b_pace_control = true;
+
+ if (S_ISREG (st.st_mode))
+ p_access->info.i_size = st.st_size;
+ else if (!S_ISBLK (st.st_mode))
{
- p_access_data->i_handle = 0;
+ p_access->pf_seek = NoSeek;
+ p_sys->b_pace_control = strcasecmp (p_access->psz_access, "stream");
}
- else if( (p_access_data->i_handle = open( psz_name,
- /*O_NONBLOCK | O_LARGEFILE*/ 0 )) == (-1) )
+
+ if (p_access->pf_seek != NoSeek)
{
- msg_Err( p_input, "cannot open file %s (%s)", psz_name,
- strerror(errno) );
- free( p_access_data );
- return( -1 );
+ /* Demuxers will need the beginning of the file for probing. */
+ posix_fadvise (fd, 0, 4096, POSIX_FADV_WILLNEED);
+ /* In most cases, we only read the file once. */
+ posix_fadvise (fd, 0, 0, POSIX_FADV_NOREUSE);
+#if defined(HAVE_FCNTL)
+ /* We'd rather use any available memory for reading ahead
+ * than for caching what we've already seen/heard */
+# if defined(F_RDAHEAD)
+ fcntl (fd, F_RDAHEAD, 1);
+# endif
+# if defined(F_NOCACHE)
+ fcntl (fd, F_NOCACHE, 1);
+# endif
+#endif
}
+ return VLC_SUCCESS;
- return( 0 );
+error:
+ close (fd);
+ return VLC_EGENERIC;
}
/*****************************************************************************
- * Module descriptor
+ * Close: close the target
*****************************************************************************/
-vlc_module_begin();
- set_description( _("Standard filesystem file reading") );
- set_capability( "access", 50 );
- add_shortcut( "stream" );
- set_callbacks( Open, __input_FDClose );
-vlc_module_end();
-
+void Close (vlc_object_t * p_this)
+{
+ access_t *p_access = (access_t*)p_this;
+
+ if (p_access->pf_read == NULL)
+ {
+ DirClose (p_this);
+ return;
+ }
+
+ access_sys_t *p_sys = p_access->p_sys;
+
+ close (p_sys->fd);
+ free (p_sys);
+}
+
+
+#include <vlc_network.h>
+
+/*****************************************************************************
+ * Read: standard read on a file descriptor.
+ *****************************************************************************/
+ssize_t FileRead( access_t *p_access, uint8_t *p_buffer, size_t i_len )
+{
+ access_sys_t *p_sys = p_access->p_sys;
+ int fd = p_sys->fd;
+ ssize_t i_ret;
+
+#ifndef WIN32
+ if (p_access->pf_seek == NoSeek)
+ i_ret = net_Read (p_access, fd, NULL, p_buffer, i_len, false);
+ else
+#endif
+ i_ret = read (fd, p_buffer, i_len);
+
+ if( i_ret < 0 )
+ {
+ switch (errno)
+ {
+ case EINTR:
+ case EAGAIN:
+ break;
+
+ default:
+ msg_Err (p_access, "failed to read (%m)");
+ dialog_Fatal (p_access, _("File reading failed"), "%s",
+ _("VLC could not read the file."));
+ p_access->info.b_eof = true;
+ return 0;
+ }
+ }
+ else if( i_ret > 0 )
+ p_access->info.i_pos += i_ret;
+ else
+ p_access->info.b_eof = true;
+
+ p_sys->i_nb_reads++;
+
+ if ((p_access->info.i_size && !(p_sys->i_nb_reads % INPUT_FSTAT_NB_READS))
+ || (p_access->info.i_pos > p_access->info.i_size))
+ {
+#ifdef HAVE_SYS_STAT_H
+ struct stat st;
+
+ if ((fstat (fd, &st) == 0)
+ && (p_access->info.i_size != (uint64_t)st.st_size))
+ {
+ p_access->info.i_size = st.st_size;
+ p_access->info.i_update |= INPUT_UPDATE_SIZE;
+ }
+#endif
+ }
+ return i_ret;
+}
+
+
+/*****************************************************************************
+ * Seek: seek to a specific location in a file
+ *****************************************************************************/
+int FileSeek (access_t *p_access, uint64_t i_pos)
+{
+ p_access->info.i_pos = i_pos;
+ p_access->info.b_eof = false;
+
+ lseek (p_access->p_sys->fd, i_pos, SEEK_SET);
+ return VLC_SUCCESS;
+}
+
+int NoSeek (access_t *p_access, uint64_t i_pos)
+{
+ /* assert(0); ?? */
+ (void) p_access; (void) i_pos;
+ return VLC_EGENERIC;
+}
+
+/*****************************************************************************
+ * Control:
+ *****************************************************************************/
+int FileControl( access_t *p_access, int i_query, va_list args )
+{
+ access_sys_t *p_sys = p_access->p_sys;
+ bool *pb_bool;
+ int64_t *pi_64;
+
+ switch( i_query )
+ {
+ /* */
+ case ACCESS_CAN_SEEK:
+ case ACCESS_CAN_FASTSEEK:
+ pb_bool = (bool*)va_arg( args, bool* );
+ *pb_bool = (p_access->pf_seek != NoSeek);
+ break;
+
+ case ACCESS_CAN_PAUSE:
+ case ACCESS_CAN_CONTROL_PACE:
+ pb_bool = (bool*)va_arg( args, bool* );
+ *pb_bool = p_sys->b_pace_control;
+ break;
+
+ /* */
+ case ACCESS_GET_PTS_DELAY:
+ pi_64 = (int64_t*)va_arg( args, int64_t * );
+ *pi_64 = p_sys->caching * INT64_C(1000);
+ break;
+
+ /* */
+ case ACCESS_SET_PAUSE_STATE:
+ /* Nothing to do */
+ break;
+
+ case ACCESS_GET_TITLE_INFO:
+ case ACCESS_SET_TITLE:
+ case ACCESS_SET_SEEKPOINT:
+ case ACCESS_SET_PRIVATE_ID_STATE:
+ case ACCESS_GET_META:
+ case ACCESS_GET_PRIVATE_ID_STATE:
+ case ACCESS_GET_CONTENT_TYPE:
+ return VLC_EGENERIC;
+
+ default:
+ msg_Warn( p_access, "unimplemented query %d in control", i_query );
+ return VLC_EGENERIC;
+
+ }
+ return VLC_SUCCESS;
+}
projects / vlc / blobdiff