smb.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:14k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * smb.c: SMB input module
- *****************************************************************************
- * Copyright (C) 2001-2004 the VideoLAN team
- * $Id: fcfa9fe0760580c3c72e9e4fe9504325e38864b6 $
- *
- * 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_charset.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) utf8_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 )
- change_safe()
- 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;
- 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_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 ) );
- }
- snprintf( psz_remote, sizeof( 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