ftp.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:25k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * ftp.c: FTP input module
- *****************************************************************************
- * Copyright (C) 2001-2006 the VideoLAN team
- * Copyright © 2006 Rémi Denis-Courmont
- * $Id: dffea0dd7a0cad40ab772d5cbb55146d72aefe40 $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr> - original code
- * Rémi Denis-Courmont <rem # videolan.org> - EPSV support
- *
- * 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 <assert.h>
- #include <vlc_access.h>
- #include <vlc_dialog.h>
- #include <vlc_network.h>
- #include <vlc_url.h>
- #include <vlc_sout.h>
- #ifndef IPPORT_FTP
- # define IPPORT_FTP 21u
- #endif
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- static int InOpen ( vlc_object_t * );
- static void InClose( vlc_object_t * );
- static int OutOpen ( vlc_object_t * );
- static void OutClose( vlc_object_t * );
- #define CACHING_TEXT N_("Caching value in ms")
- #define CACHING_LONGTEXT N_(
- "Caching value for FTP streams. This "
- "value should be set in milliseconds." )
- #define USER_TEXT N_("FTP user name")
- #define USER_LONGTEXT N_("User name that will "
- "be used for the connection.")
- #define PASS_TEXT N_("FTP password")
- #define PASS_LONGTEXT N_("Password that will be "
- "used for the connection.")
- #define ACCOUNT_TEXT N_("FTP account")
- #define ACCOUNT_LONGTEXT N_("Account that will be "
- "used for the connection.")
- vlc_module_begin ()
- set_shortname( "FTP" )
- set_description( N_("FTP input") )
- set_capability( "access", 0 )
- set_category( CAT_INPUT )
- set_subcategory( SUBCAT_INPUT_ACCESS )
- add_integer( "ftp-caching", 2 * DEFAULT_PTS_DELAY / 1000, NULL,
- CACHING_TEXT, CACHING_LONGTEXT, true )
- change_safe()
- add_string( "ftp-user", "anonymous", NULL, USER_TEXT, USER_LONGTEXT,
- false )
- add_string( "ftp-pwd", "anonymous@example.com", NULL, PASS_TEXT,
- PASS_LONGTEXT, false )
- add_string( "ftp-account", "anonymous", NULL, ACCOUNT_TEXT,
- ACCOUNT_LONGTEXT, false )
- add_shortcut( "ftp" )
- set_callbacks( InOpen, InClose )
- add_submodule ()
- set_shortname( "FTP" )
- set_description( N_("FTP upload output") )
- set_capability( "sout access", 0 )
- set_category( CAT_SOUT )
- set_subcategory( SUBCAT_SOUT_ACO )
- add_shortcut( "ftp" )
- set_callbacks( OutOpen, OutClose )
- vlc_module_end ()
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- static ssize_t Read( access_t *, uint8_t *, size_t );
- static ssize_t Write( sout_access_out_t *, block_t * );
- static int Seek( access_t *, int64_t );
- static int OutSeek( sout_access_out_t *, off_t );
- static int Control( access_t *, int, va_list );
- struct access_sys_t
- {
- vlc_url_t url;
- int fd_cmd;
- int fd_data;
- char sz_epsv_ip[NI_MAXNUMERICHOST];
- bool out;
- bool directory;
- };
- #define GET_OUT_SYS( p_this )
- ((access_sys_t *)(((sout_access_out_t *)(p_this))->p_sys))
- static int ftp_SendCommand( vlc_object_t *, access_sys_t *, const char *, ... );
- static int ftp_ReadCommand( vlc_object_t *, access_sys_t *, int *, char ** );
- static int ftp_StartStream( vlc_object_t *, access_sys_t *, int64_t );
- static int ftp_StopStream ( vlc_object_t *, access_sys_t * );
- static int Login( vlc_object_t *p_access, access_sys_t *p_sys )
- {
- int i_answer;
- char *psz;
- /* *** Open a TCP connection with server *** */
- int fd = p_sys->fd_cmd = net_ConnectTCP( p_access, p_sys->url.psz_host,
- p_sys->url.i_port );
- if( fd == -1 )
- {
- msg_Err( p_access, "connection failed" );
- dialog_Fatal( p_access, _("Network interaction failed"), "%s",
- _("VLC could not connect with the given server.") );
- return -1;
- }
- while( ftp_ReadCommand( p_access, p_sys, &i_answer, NULL ) == 1 );
- if( i_answer / 100 != 2 )
- {
- msg_Err( p_access, "connection rejected" );
- dialog_Fatal( p_access, _("Network interaction failed"), "%s",
- _("VLC's connection to the given server was rejected.") );
- return -1;
- }
- msg_Dbg( p_access, "connection accepted (%d)", i_answer );
- if( p_sys->url.psz_username && *p_sys->url.psz_username )
- psz = strdup( p_sys->url.psz_username );
- else
- psz = var_CreateGetString( p_access, "ftp-user" );
- if( !psz )
- return -1;
- if( ftp_SendCommand( p_access, p_sys, "USER %s", psz ) < 0 ||
- ftp_ReadCommand( p_access, p_sys, &i_answer, NULL ) < 0 )
- {
- free( psz );
- return -1;
- }
- free( psz );
- switch( i_answer / 100 )
- {
- case 2:
- msg_Dbg( p_access, "user accepted" );
- break;
- case 3:
- msg_Dbg( p_access, "password needed" );
- if( p_sys->url.psz_password && *p_sys->url.psz_password )
- psz = strdup( p_sys->url.psz_password );
- else
- psz = var_CreateGetString( p_access, "ftp-pwd" );
- if( !psz )
- return -1;
- if( ftp_SendCommand( p_access, p_sys, "PASS %s", psz ) < 0 ||
- ftp_ReadCommand( p_access, p_sys, &i_answer, NULL ) < 0 )
- {
- free( psz );
- return -1;
- }
- free( psz );
- switch( i_answer / 100 )
- {
- case 2:
- msg_Dbg( p_access, "password accepted" );
- break;
- case 3:
- msg_Dbg( p_access, "account needed" );
- psz = var_CreateGetString( p_access, "ftp-account" );
- if( ftp_SendCommand( p_access, p_sys, "ACCT %s",
- psz ) < 0 ||
- ftp_ReadCommand( p_access, p_sys, &i_answer, NULL ) < 0 )
- {
- free( psz );
- return -1;
- }
- free( psz );
- if( i_answer / 100 != 2 )
- {
- msg_Err( p_access, "account rejected" );
- dialog_Fatal( p_access,
- _("Network interaction failed"),
- "%s", _("Your account was rejected.") );
- return -1;
- }
- msg_Dbg( p_access, "account accepted" );
- break;
- default:
- msg_Err( p_access, "password rejected" );
- dialog_Fatal( p_access, _("Network interaction failed"),
- "%s", _("Your password was rejected.") );
- return -1;
- }
- break;
- default:
- msg_Err( p_access, "user rejected" );
- dialog_Fatal( p_access, _("Network interaction failed"), "%s",
- _("Your connection attempt to the server was rejected.") );
- return -1;
- }
- return 0;
- }
- static int Connect( vlc_object_t *p_access, access_sys_t *p_sys )
- {
- if( Login( p_access, p_sys ) < 0 )
- return -1;
- /* Extended passive mode */
- if( ftp_SendCommand( p_access, p_sys, "EPSV ALL" ) < 0 )
- {
- msg_Err( p_access, "cannot request extended passive mode" );
- net_Close( p_sys->fd_cmd );
- return -1;
- }
- if( ftp_ReadCommand( p_access, p_sys, NULL, NULL ) == 2 )
- {
- if( net_GetPeerAddress( p_sys->fd_cmd, p_sys->sz_epsv_ip, NULL ) )
- {
- net_Close( p_sys->fd_cmd );
- return -1;
- }
- }
- else
- {
- /* If ESPV ALL fails, we fallback to PASV.
- * We have to restart the connection in case there is a NAT that
- * understands EPSV ALL in the way, and hence won't allow PASV on
- * the initial connection.
- */
- msg_Info( p_access, "FTP Extended passive mode disabled" );
- net_Close( p_sys->fd_cmd );
- if( Login( p_access, p_sys ) )
- {
- net_Close( p_sys->fd_cmd );
- return -1;
- }
- }
- /* check binary mode support */
- if( ftp_SendCommand( p_access, p_sys, "TYPE I" ) < 0 ||
- ftp_ReadCommand( p_access, p_sys, NULL, NULL ) != 2 )
- {
- msg_Err( p_access, "cannot set binary transfer mode" );
- net_Close( p_sys->fd_cmd );
- return -1;
- }
- return 0;
- }
- static int parseURL( vlc_url_t *url, const char *path )
- {
- if( path == NULL )
- return VLC_EGENERIC;
- /* *** Parse URL and get server addr/port and path *** */
- while( *path == '/' )
- path++;
- vlc_UrlParse( url, path, 0 );
- if( url->psz_host == NULL || *url->psz_host == ' ' )
- return VLC_EGENERIC;
- if( url->i_port <= 0 )
- url->i_port = IPPORT_FTP; /* default port */
- /* FTP URLs are relative to user's default directory (RFC1738 §3.2)
- For absolute path use ftp://foo.bar//usr/local/etc/filename */
- /* FIXME: we should issue a series of CWD, one per slash */
- if( url->psz_path && *url->psz_path == '/' )
- url->psz_path++;
- char *type = strstr( url->psz_path, ";type=" );
- if( type )
- {
- *type = ' ';
- if( strchr( "iI", type[6] ) == NULL )
- return VLC_EGENERIC; /* ASCII and directory not supported */
- }
- decode_URI( url->psz_path );
- return VLC_SUCCESS;
- }
- /****************************************************************************
- * Open: connect to ftp server and ask for file
- ****************************************************************************/
- static int InOpen( vlc_object_t *p_this )
- {
- access_t *p_access = (access_t*)p_this;
- access_sys_t *p_sys;
- char *psz_arg;
- /* Init p_access */
- STANDARD_READ_ACCESS_INIT
- p_sys->fd_data = -1;
- p_sys->out = false;
- p_sys->directory = false;
- if( parseURL( &p_sys->url, p_access->psz_path ) )
- goto exit_error;
- if( Connect( p_this, p_sys ) )
- goto exit_error;
- /* get size */
- if( ftp_SendCommand( p_this, p_sys, "SIZE %s", p_sys->url.psz_path
- ? p_sys->url.psz_path : "" ) < 0
- || ftp_ReadCommand( p_this, p_sys, NULL, &psz_arg ) != 2 )
- {
- msg_Dbg( p_access, "cannot get file size" );
- msg_Dbg( p_access, "will try to get directory contents" );
- if( ftp_SendCommand( p_this, p_sys, "CWD %s", p_sys->url.psz_path
- ? p_sys->url.psz_path : "" ) < 0 ||
- ftp_ReadCommand( p_this, p_sys, NULL, &psz_arg ) != 2 )
- {
- msg_Err( p_access, "file or directory doesn't exist" );
- net_Close( p_sys->fd_cmd );
- goto exit_error;
- }
- p_sys->directory = true;
- }
- else
- {
- p_access->info.i_size = atoll( &psz_arg[4] );
- free( psz_arg );
- msg_Dbg( p_access, "file size: %"PRId64, p_access->info.i_size );
- }
- /* Start the 'stream' */
- if( ftp_StartStream( p_this, p_sys, 0 ) < 0 )
- {
- msg_Err( p_access, "cannot retrieve file" );
- net_Close( p_sys->fd_cmd );
- goto exit_error;
- }
- /* Update default_pts to a suitable value for ftp access */
- var_Create( p_access, "ftp-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
- return VLC_SUCCESS;
- exit_error:
- vlc_UrlClean( &p_sys->url );
- free( p_sys );
- return VLC_EGENERIC;
- }
- static int OutOpen( vlc_object_t *p_this )
- {
- sout_access_out_t *p_access = (sout_access_out_t *)p_this;
- access_sys_t *p_sys;
- p_sys = calloc( 1, sizeof( *p_sys ) );
- if( !p_sys )
- return VLC_ENOMEM;
- /* Init p_access */
- p_sys->fd_data = -1;
- p_sys->out = true;
- if( parseURL( &p_sys->url, p_access->psz_path ) )
- goto exit_error;
- if( Connect( p_this, p_sys ) )
- goto exit_error;
- /* Start the 'stream' */
- if( ftp_StartStream( p_this, p_sys, 0 ) < 0 )
- {
- msg_Err( p_access, "cannot store file" );
- net_Close( p_sys->fd_cmd );
- goto exit_error;
- }
- p_access->pf_seek = OutSeek;
- p_access->pf_write = Write;
- p_access->p_sys = (void *)p_sys;
- return VLC_SUCCESS;
- exit_error:
- vlc_UrlClean( &p_sys->url );
- free( p_sys );
- return VLC_EGENERIC;
- }
- /*****************************************************************************
- * Close: free unused data structures
- *****************************************************************************/
- static void Close( vlc_object_t *p_access, access_sys_t *p_sys )
- {
- msg_Dbg( p_access, "stopping stream" );
- ftp_StopStream( p_access, p_sys );
- if( ftp_SendCommand( p_access, p_sys, "QUIT" ) < 0 )
- {
- msg_Warn( p_access, "cannot quit" );
- }
- else
- {
- ftp_ReadCommand( p_access, p_sys, NULL, NULL );
- }
- net_Close( p_sys->fd_cmd );
- /* free memory */
- vlc_UrlClean( &p_sys->url );
- free( p_sys );
- }
- static void InClose( vlc_object_t *p_this )
- {
- Close( p_this, ((access_t *)p_this)->p_sys);
- }
- static void OutClose( vlc_object_t *p_this )
- {
- Close( p_this, GET_OUT_SYS(p_this));
- }
- /*****************************************************************************
- * Seek: try to go at the right place
- *****************************************************************************/
- static int _Seek( vlc_object_t *p_access, access_sys_t *p_sys, int64_t i_pos )
- {
- if( i_pos < 0 )
- return VLC_EGENERIC;
- msg_Dbg( p_access, "seeking to %"PRId64, i_pos );
- ftp_StopStream( (vlc_object_t *)p_access, p_sys );
- if( ftp_StartStream( (vlc_object_t *)p_access, p_sys, i_pos ) < 0 )
- return VLC_EGENERIC;
- return VLC_SUCCESS;
- }
- static int Seek( access_t *p_access, int64_t i_pos )
- {
- int val = _Seek( (vlc_object_t *)p_access, p_access->p_sys, i_pos );
- if( val )
- return val;
- p_access->info.b_eof = false;
- p_access->info.i_pos = i_pos;
- return VLC_SUCCESS;
- }
- static int OutSeek( sout_access_out_t *p_access, off_t i_pos )
- {
- return _Seek( (vlc_object_t *)p_access, GET_OUT_SYS( p_access ), i_pos);
- }
- /*****************************************************************************
- * 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;
- assert( p_sys->fd_data != -1 );
- assert( !p_sys->out );
- if( p_access->info.b_eof )
- return 0;
- if( p_sys->directory )
- {
- char *psz_line = net_Gets( p_access, p_sys->fd_data, NULL );
- if( !psz_line )
- {
- p_access->info.b_eof = true;
- return 0;
- }
- else
- {
- snprintf( (char*)p_buffer, i_len, "ftp://%s:%d/%s/%sn",
- p_sys->url.psz_host, p_sys->url.i_port,
- p_sys->url.psz_path, psz_line );
- free( psz_line );
- return strlen( (const char *)p_buffer );
- }
- }
- else
- {
- int i_read = net_Read( p_access, p_sys->fd_data, NULL,
- p_buffer, i_len, false );
- 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;
- }
- }
- /*****************************************************************************
- * Write:
- *****************************************************************************/
- static ssize_t Write( sout_access_out_t *p_access, block_t *p_buffer )
- {
- access_sys_t *p_sys = GET_OUT_SYS(p_access);
- size_t i_write = 0;
- assert( p_sys->fd_data != -1 );
- while( p_buffer != NULL )
- {
- block_t *p_next = p_buffer->p_next;;
- i_write += net_Write( p_access, p_sys->fd_data, NULL,
- p_buffer->p_buffer, p_buffer->i_buffer );
- block_Release( p_buffer );
- p_buffer = p_next;
- }
- return i_write;
- }
- /*****************************************************************************
- * 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 = false;
- break;
- case ACCESS_CAN_PAUSE:
- pb_bool = (bool*)va_arg( args, bool* );
- *pb_bool = true; /* FIXME */
- break;
- case ACCESS_CAN_CONTROL_PACE:
- pb_bool = (bool*)va_arg( args, bool* );
- *pb_bool = true; /* FIXME */
- break;
- /* */
- case ACCESS_GET_PTS_DELAY:
- pi_64 = (int64_t*)va_arg( args, int64_t * );
- *pi_64 = (int64_t)var_GetInteger( p_access, "ftp-caching" ) * INT64_C(1000);
- break;
- /* */
- case ACCESS_SET_PAUSE_STATE:
- pb_bool = (bool*)va_arg( args, bool* );
- if ( !pb_bool )
- return Seek( p_access, p_access->info.i_pos );
- 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:
- case ACCESS_GET_META:
- return VLC_EGENERIC;
- default:
- msg_Warn( p_access, "unimplemented query in control: %d", i_query);
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * ftp_*:
- *****************************************************************************/
- static int ftp_SendCommand( vlc_object_t *p_access, access_sys_t *p_sys,
- const char *psz_fmt, ... )
- {
- va_list args;
- char *psz_cmd;
- va_start( args, psz_fmt );
- if( vasprintf( &psz_cmd, psz_fmt, args ) == -1 )
- return VLC_EGENERIC;
- va_end( args );
- msg_Dbg( p_access, "ftp_SendCommand:"%s"", psz_cmd);
- if( net_Printf( VLC_OBJECT(p_access), p_sys->fd_cmd, NULL, "%srn",
- psz_cmd ) < 0 )
- {
- msg_Err( p_access, "failed to send command" );
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }
- /* TODO support this s**t :
- RFC 959 allows the client to send certain TELNET strings at any moment,
- even in the middle of a request:
- * 377377.
- * 377376x where x is one byte.
- * 377375x where x is one byte. The server is obliged to send 377374x
- * immediately after reading x.
- * 377374x where x is one byte.
- * 377373x where x is one byte. The server is obliged to send 377376x
- * immediately after reading x.
- * 377x for any other byte x.
- These strings are not part of the requests, except in the case 377377,
- where the request contains one 377. */
- static int ftp_ReadCommand( vlc_object_t *p_access, access_sys_t *p_sys,
- int *pi_answer, char **ppsz_answer )
- {
- char *psz_line;
- int i_answer;
- psz_line = net_Gets( p_access, p_sys->fd_cmd, NULL );
- if( psz_line == NULL || strlen( psz_line ) < 3 )
- {
- msg_Err( p_access, "cannot get answer" );
- free( psz_line );
- if( pi_answer ) *pi_answer = 500;
- if( ppsz_answer ) *ppsz_answer = NULL;
- return -1;
- }
- msg_Dbg( p_access, "answer=%s", psz_line );
- if( psz_line[3] == '-' ) /* Multiple response */
- {
- char end[4];
- memcpy( end, psz_line, 3 );
- end[3] = ' ';
- for( ;; )
- {
- char *psz_tmp = net_Gets( p_access, p_sys->fd_cmd, NULL );
- if( psz_tmp == NULL ) /* Error */
- break;
- if( !strncmp( psz_tmp, end, 4 ) )
- {
- free( psz_tmp );
- break;
- }
- free( psz_tmp );
- }
- }
- i_answer = atoi( psz_line );
- if( pi_answer ) *pi_answer = i_answer;
- if( ppsz_answer )
- {
- *ppsz_answer = psz_line;
- }
- else
- {
- free( psz_line );
- }
- return( i_answer / 100 );
- }
- static int ftp_StartStream( vlc_object_t *p_access, access_sys_t *p_sys,
- int64_t i_start )
- {
- char psz_ipv4[16], *psz_ip = p_sys->sz_epsv_ip;
- int i_answer;
- char *psz_arg, *psz_parser;
- int i_port;
- assert( p_sys->fd_data == -1 );
- if( ( ftp_SendCommand( p_access, p_sys, *psz_ip ? "EPSV" : "PASV" ) < 0 )
- || ( ftp_ReadCommand( p_access, p_sys, &i_answer, &psz_arg ) != 2 ) )
- {
- msg_Err( p_access, "cannot set passive mode" );
- return VLC_EGENERIC;
- }
- psz_parser = strchr( psz_arg, '(' );
- if( psz_parser == NULL )
- {
- free( psz_arg );
- msg_Err( p_access, "cannot parse passive mode response" );
- return VLC_EGENERIC;
- }
- if( *psz_ip )
- {
- char psz_fmt[7] = "(|||%u";
- psz_fmt[1] = psz_fmt[2] = psz_fmt[3] = psz_parser[1];
- if( sscanf( psz_parser, psz_fmt, &i_port ) < 1 )
- {
- free( psz_arg );
- msg_Err( p_access, "cannot parse passive mode response" );
- return VLC_EGENERIC;
- }
- }
- else
- {
- unsigned a1, a2, a3, a4, p1, p2;
- if( ( sscanf( psz_parser, "(%u,%u,%u,%u,%u,%u", &a1, &a2, &a3, &a4,
- &p1, &p2 ) < 6 ) || ( a1 > 255 ) || ( a2 > 255 )
- || ( a3 > 255 ) || ( a4 > 255 ) || ( p1 > 255 ) || ( p2 > 255 ) )
- {
- free( psz_arg );
- msg_Err( p_access, "cannot parse passive mode response" );
- return VLC_EGENERIC;
- }
- sprintf( psz_ipv4, "%u.%u.%u.%u", a1, a2, a3, a4 );
- psz_ip = psz_ipv4;
- i_port = (p1 << 8) | p2;
- }
- free( psz_arg );
- msg_Dbg( p_access, "ip:%s port:%d", psz_ip, i_port );
- if( ftp_SendCommand( p_access, p_sys, "TYPE I" ) < 0 ||
- ftp_ReadCommand( p_access, p_sys, &i_answer, NULL ) != 2 )
- {
- msg_Err( p_access, "cannot set binary transfer mode" );
- return VLC_EGENERIC;
- }
- if( i_start > 0 )
- {
- if( ftp_SendCommand( p_access, p_sys, "REST %"PRIu64, i_start ) < 0 ||
- ftp_ReadCommand( p_access, p_sys, &i_answer, NULL ) > 3 )
- {
- msg_Err( p_access, "cannot set restart offset" );
- return VLC_EGENERIC;
- }
- }
- msg_Dbg( p_access, "waiting for data connection..." );
- p_sys->fd_data = net_ConnectTCP( p_access, psz_ip, i_port );
- if( p_sys->fd_data < 0 )
- {
- msg_Err( p_access, "failed to connect with server" );
- return VLC_EGENERIC;
- }
- msg_Dbg( p_access, "connection with "%s:%d" successful",
- psz_ip, i_port );
- if( p_sys->directory )
- {
- if( ftp_SendCommand( p_access, p_sys, "NLST" ) < 0 ||
- ftp_ReadCommand( p_access, p_sys, NULL, &psz_arg ) > 2 )
- {
- msg_Err( p_access, "cannot list directory contents" );
- return VLC_EGENERIC;
- }
- }
- else
- {
- /* "1xx" message */
- if( ftp_SendCommand( p_access, p_sys, "%s %s",
- p_sys->out ? "STOR" : "RETR",
- p_sys->url.psz_path ? p_sys->url.psz_path : "" ) < 0
- || ftp_ReadCommand( p_access, p_sys, &i_answer, NULL ) > 2 )
- {
- msg_Err( p_access, "cannot retrieve file" );
- return VLC_EGENERIC;
- }
- }
- shutdown( p_sys->fd_data, p_sys->out ? SHUT_RD : SHUT_WR );
- return VLC_SUCCESS;
- }
- static int ftp_StopStream ( vlc_object_t *p_access, access_sys_t *p_sys )
- {
- if( ftp_SendCommand( p_access, p_sys, "ABOR" ) < 0 )
- {
- msg_Warn( p_access, "cannot abort file" );
- if( p_sys->fd_data > 0 )
- net_Close( p_sys->fd_data );
- p_sys->fd_data = -1;
- return VLC_EGENERIC;
- }
- if( p_sys->fd_data != -1 )
- {
- net_Close( p_sys->fd_data );
- p_sys->fd_data = -1;
- /* Read the final response from RETR/STOR, i.e. 426 or 226 */
- ftp_ReadCommand( p_access, p_sys, NULL, NULL );
- }
- /* Read the response from ABOR, i.e. 226 or 225 */
- ftp_ReadCommand( p_access, p_sys, NULL, NULL );
- return VLC_SUCCESS;
- }