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vlc/modules/access/smb.c

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/*****************************************************************************
* smb.c: SMB input module
*****************************************************************************
* Copyright (C) 2001-2004 the VideoLAN team
* $Id$
*
* Authors: Gildas Bazin <gbazin@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
* GNU General Public License for more details.
*
* 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_access.h>
#ifdef WIN32
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
# ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
# endif
# include <io.h>
# define smbc_open(a,b,c) open(a,b,c)
# define stat _stati64
# define smbc_fstat(a,b) _fstati64(a,b)
# define smbc_read read
# define smbc_lseek _lseeki64
# define smbc_close close
#else
# include <libsmbclient.h>
# define USE_CTX 1
#endif
#include <errno.h>
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
#define CACHING_TEXT N_("Caching value in ms")
#define CACHING_LONGTEXT N_( \
"Caching value for SMB streams. This " \
"value should be set in milliseconds." )
#define USER_TEXT N_("SMB user name")
#define USER_LONGTEXT N_("User name that will " \
"be used for the connection.")
#define PASS_TEXT N_("SMB password")
#define PASS_LONGTEXT N_("Password that will be " \
"used for the connection.")
#define DOMAIN_TEXT N_("SMB domain")
#define DOMAIN_LONGTEXT N_("Domain/Workgroup that " \
"will be used for the connection.")
vlc_module_begin ()
set_shortname( "SMB" )
set_description( N_("SMB input") )
set_capability( "access", 0 )
set_category( CAT_INPUT )
set_subcategory( SUBCAT_INPUT_ACCESS )
add_integer( "smb-caching", 2 * DEFAULT_PTS_DELAY / 1000, NULL,
CACHING_TEXT, CACHING_LONGTEXT, true );
add_string( "smb-user", NULL, NULL, USER_TEXT, USER_LONGTEXT,
false );
add_string( "smb-pwd", NULL, NULL, PASS_TEXT,
PASS_LONGTEXT, false );
add_string( "smb-domain", NULL, NULL, DOMAIN_TEXT,
DOMAIN_LONGTEXT, false );
add_shortcut( "smb" )
set_callbacks( Open, Close )
vlc_module_end ()
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static ssize_t Read( access_t *, uint8_t *, size_t );
static int Seek( access_t *, int64_t );
static int Control( access_t *, int, va_list );
struct access_sys_t
{
#ifdef USE_CTX
SMBCCTX *p_smb;
SMBCFILE *p_file;
#else
int i_smb;
#endif
};
#ifdef WIN32
static void Win32AddConnection( access_t *, char *, char *, char *, char * );
#else
static void smb_auth( const char *srv, const char *shr, char *wg, int wglen,
char *un, int unlen, char *pw, int pwlen )
{
//wglen = unlen = pwlen = 0;
}
#endif
/****************************************************************************
* Open: connect to smb server and ask for file
****************************************************************************/
static int Open( vlc_object_t *p_this )
{
access_t *p_access = (access_t*)p_this;
access_sys_t *p_sys;
struct stat filestat;
char *psz_path, *psz_uri;
char *psz_user = NULL, *psz_pwd = NULL, *psz_domain = NULL;
int i_ret;
#ifdef USE_CTX
SMBCCTX *p_smb;
SMBCFILE *p_file;
#else
int i_smb;
#endif
/* Parse input URI
* [[[domain;]user[:password@]]server[/share[/path[/file]]]] */
psz_path = strchr( p_access->psz_path, '/' );
if( !psz_path )
{
msg_Err( p_access, "invalid SMB URI: smb://%s", psz_path );
return VLC_EGENERIC;
}
else
{
char *psz_tmp = strdup( p_access->psz_path );
char *psz_parser;
psz_tmp[ psz_path - p_access->psz_path ] = 0;
psz_path = p_access->psz_path;
psz_parser = strchr( psz_tmp, '@' );
if( psz_parser )
{
/* User info is there */
*psz_parser = 0;
psz_path = p_access->psz_path + (psz_parser - psz_tmp) + 1;
psz_parser = strchr( psz_tmp, ':' );
if( psz_parser )
{
/* Password found */
psz_pwd = strdup( psz_parser+1 );
*psz_parser = 0;
}
psz_parser = strchr( psz_tmp, ';' );
if( psz_parser )
{
/* Domain found */
*psz_parser = 0; psz_parser++;
psz_domain = strdup( psz_tmp );
}
else psz_parser = psz_tmp;
psz_user = strdup( psz_parser );
}
free( psz_tmp );
}
/* Build an SMB URI
* smb://[[[domain;]user[:password@]]server[/share[/path[/file]]]] */
if( !psz_user ) psz_user = var_CreateGetString( p_access, "smb-user" );
if( psz_user && !*psz_user ) { free( psz_user ); psz_user = NULL; }
if( !psz_pwd ) psz_pwd = var_CreateGetString( p_access, "smb-pwd" );
if( psz_pwd && !*psz_pwd ) { free( psz_pwd ); psz_pwd = NULL; }
if( !psz_domain ) psz_domain = var_CreateGetString( p_access, "smb-domain" );
if( psz_domain && !*psz_domain ) { free( psz_domain ); psz_domain = NULL; }
#ifdef WIN32
if( psz_user )
Win32AddConnection( p_access, psz_path, psz_user, psz_pwd, psz_domain);
i_ret = asprintf( &psz_uri, "//%s", psz_path );
#else
if( psz_user )
i_ret = asprintf( &psz_uri, "smb://%s%s%s%s%s@%s",
psz_domain ? psz_domain : "", psz_domain ? ";" : "",
psz_user, psz_pwd ? ":" : "",
psz_pwd ? psz_pwd : "", psz_path );
else
i_ret = asprintf( &psz_uri, "smb://%s", psz_path );
#endif
free( psz_user );
free( psz_pwd );
free( psz_domain );
if( i_ret == -1 )
return VLC_ENOMEM;
#ifdef USE_CTX
if( !(p_smb = smbc_new_context()) )
{
free( psz_uri );
return VLC_ENOMEM;
}
p_smb->debug = 1;
p_smb->callbacks.auth_fn = smb_auth;
if( !smbc_init_context( p_smb ) )
{
msg_Err( p_access, "cannot initialize context (%m)" );
smbc_free_context( p_smb, 1 );
free( psz_uri );
return VLC_EGENERIC;
}
if( !(p_file = (p_smb->open)( p_smb, psz_uri, O_RDONLY, 0 )) )
{
msg_Err( p_access, "open failed for '%s' (%m)",
p_access->psz_path );
smbc_free_context( p_smb, 1 );
free( psz_uri );
return VLC_EGENERIC;
}
/* Init p_access */
STANDARD_READ_ACCESS_INIT;
i_ret = p_smb->fstat( p_smb, p_file, &filestat );
if( i_ret ) msg_Err( p_access, "stat failed (%m)" );
else p_access->info.i_size = filestat.st_size;
#else
#ifndef WIN32
if( smbc_init( smb_auth, 1 ) )
{
free( psz_uri );
return VLC_EGENERIC;
}
#endif
/*
** some version of glibc defines open as a macro, causing havoc
** with other macros using 'open' under the hood, such as the
** following one:
*/
#if defined(smbc_open) && defined(open)
# undef open
#endif
if( (i_smb = smbc_open( psz_uri, O_RDONLY, 0 )) < 0 )
{
msg_Err( p_access, "open failed for '%s' (%m)",
p_access->psz_path );
free( psz_uri );
return VLC_EGENERIC;
}
/* Init p_access */
STANDARD_READ_ACCESS_INIT;
i_ret = smbc_fstat( i_smb, &filestat );
if( i_ret )
{
errno = i_ret;
msg_Err( p_access, "stat failed (%m)" );
}
else p_access->info.i_size = filestat.st_size;
#endif
free( psz_uri );
#ifdef USE_CTX
p_sys->p_smb = p_smb;
p_sys->p_file = p_file;
#else
p_sys->i_smb = i_smb;
#endif
/* Update default_pts to a suitable value for smb access */
var_Create( p_access, "smb-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
return VLC_SUCCESS;
}
/*****************************************************************************
* Close: free unused data structures
*****************************************************************************/
static void Close( vlc_object_t *p_this )
{
access_t *p_access = (access_t*)p_this;
access_sys_t *p_sys = p_access->p_sys;
#ifdef USE_CTX
# ifndef HAVE__SMBCCTX_CLOSE_FN
p_sys->p_smb->close( p_sys->p_smb, p_sys->p_file );
# else
p_sys->p_smb->close_fn( p_sys->p_smb, p_sys->p_file );
# endif
smbc_free_context( p_sys->p_smb, 1 );
#else
smbc_close( p_sys->i_smb );
#endif
free( p_sys );
}
/*****************************************************************************
* Seek: try to go at the right place
*****************************************************************************/
static int Seek( access_t *p_access, int64_t i_pos )
{
access_sys_t *p_sys = p_access->p_sys;
int64_t i_ret;
if( i_pos < 0 ) return VLC_EGENERIC;
msg_Dbg( p_access, "seeking to %"PRId64, i_pos );
#ifdef USE_CTX
i_ret = p_sys->p_smb->lseek(p_sys->p_smb, p_sys->p_file, i_pos, SEEK_SET);
#else
i_ret = smbc_lseek( p_sys->i_smb, i_pos, SEEK_SET );
#endif
if( i_ret == -1 )
{
msg_Err( p_access, "seek failed (%m)" );
return VLC_EGENERIC;
}
p_access->info.b_eof = false;
p_access->info.i_pos = i_ret;
return VLC_SUCCESS;
}
/*****************************************************************************
* Read:
*****************************************************************************/
static ssize_t Read( access_t *p_access, uint8_t *p_buffer, size_t i_len )
{
access_sys_t *p_sys = p_access->p_sys;
int i_read;
if( p_access->info.b_eof ) return 0;
#ifdef USE_CTX
i_read = p_sys->p_smb->read(p_sys->p_smb, p_sys->p_file, p_buffer, i_len);
#else
i_read = smbc_read( p_sys->i_smb, p_buffer, i_len );
#endif
if( i_read < 0 )
{
msg_Err( p_access, "read failed (%m)" );
return -1;
}
if( i_read == 0 ) p_access->info.b_eof = true;
else if( i_read > 0 ) p_access->info.i_pos += i_read;
return i_read;
}
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( access_t *p_access, int i_query, va_list args )
{
bool *pb_bool;
int *pi_int;
int64_t *pi_64;
switch( i_query )
{
case ACCESS_CAN_SEEK:
pb_bool = (bool*)va_arg( args, bool* );
*pb_bool = true;
break;
case ACCESS_CAN_FASTSEEK:
pb_bool = (bool*)va_arg( args, bool* );
*pb_bool = true;
break;
case ACCESS_CAN_PAUSE:
pb_bool = (bool*)va_arg( args, bool* );
*pb_bool = true;
break;
case ACCESS_CAN_CONTROL_PACE:
pb_bool = (bool*)va_arg( args, bool* );
*pb_bool = true;
break;
case ACCESS_GET_MTU:
pi_int = (int*)va_arg( args, int * );
*pi_int = 0;
break;
case ACCESS_GET_PTS_DELAY:
pi_64 = (int64_t*)va_arg( args, int64_t * );
*pi_64 = (int64_t)var_GetInteger( p_access, "smb-caching" ) * 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_CONTENT_TYPE:
return VLC_EGENERIC;
default:
msg_Warn( p_access, "unimplemented query in control" );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
#ifdef WIN32
static void Win32AddConnection( access_t *p_access, char *psz_path,
char *psz_user, char *psz_pwd,
char *psz_domain )
{
DWORD (*OurWNetAddConnection2)( LPNETRESOURCE, LPCTSTR, LPCTSTR, DWORD );
char psz_remote[MAX_PATH], psz_server[MAX_PATH], psz_share[MAX_PATH];
NETRESOURCE net_resource;
DWORD i_result;
char *psz_parser;
VLC_UNUSED( psz_domain );
HINSTANCE hdll = LoadLibrary(_T("MPR.DLL"));
if( !hdll )
{
msg_Warn( p_access, "couldn't load mpr.dll" );
return;
}
OurWNetAddConnection2 =
(void *)GetProcAddress( hdll, _T("WNetAddConnection2A") );
if( !OurWNetAddConnection2 )
{
msg_Warn( p_access, "couldn't find WNetAddConnection2 in mpr.dll" );
return;
}
memset( &net_resource, 0, sizeof(net_resource) );
net_resource.dwType = RESOURCETYPE_DISK;
/* Find out server and share names */
strlcpy( psz_server, psz_path, sizeof( psz_server ) );
psz_share[0] = 0;
psz_parser = strchr( psz_path, '/' );
if( psz_parser )
{
char *psz_parser2 = strchr( ++psz_parser, '/' );
if( psz_parser2 )
strlcpy( psz_share, psz_parser, sizeof( psz_share ) );
}
sprintf( psz_remote, "\\\\%s\\%s", psz_server, psz_share );
net_resource.lpRemoteName = psz_remote;
i_result = OurWNetAddConnection2( &net_resource, psz_pwd, psz_user, 0 );
if( i_result != NO_ERROR )
{
msg_Dbg( p_access, "connected to %s", psz_remote );
}
else if( i_result != ERROR_ALREADY_ASSIGNED &&
i_result != ERROR_DEVICE_ALREADY_REMEMBERED )
{
msg_Dbg( p_access, "already connected to %s", psz_remote );
}
else
{
msg_Dbg( p_access, "failed to connect to %s", psz_remote );
}
FreeLibrary( hdll );
}
#endif // WIN32
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