/*****************************************************************************
* ftp.c: FTP input module
*****************************************************************************
- * Copyright (C) 2001-2006 the VideoLAN team
+ * Copyright (C) 2001-2006 VLC authors and VideoLAN
+ * Copyright © 2006 Rémi Denis-Courmont
* $Id$
*
* 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
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 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.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser 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.
+ * You should have received a copy of the GNU Lesser 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
*****************************************************************************/
-#include <stdlib.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
-#include <vlc/vlc.h>
-#include <vlc/input.h>
+#include <vlc_common.h>
+#include <vlc_plugin.h>
-#include "network.h"
-#include "vlc_url.h"
+#include <assert.h>
+
+#include <vlc_access.h>
+#include <vlc_dialog.h>
+
+#include <vlc_network.h>
+#include <vlc_url.h>
+#include <vlc_tls.h>
+#include <vlc_sout.h>
+#include <vlc_charset.h>
+
+#ifndef IPPORT_FTP
+# define IPPORT_FTP 21u
+#endif
+
+#ifndef IPPORT_FTPS
+# define IPPORT_FTPS 990u
+#endif
/*****************************************************************************
* Module descriptor
*****************************************************************************/
-static int Open ( vlc_object_t * );
-static void Close( vlc_object_t * );
+static int InOpen ( vlc_object_t * );
+static void InClose( vlc_object_t * );
+#ifdef ENABLE_SOUT
+static int OutOpen ( vlc_object_t * );
+static void OutClose( vlc_object_t * );
+#endif
-#define CACHING_TEXT N_("Caching value in ms")
-#define CACHING_LONGTEXT N_( \
- "Default 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 ACCOUNT_LONGTEXT N_("Account that will be " \
"used for the connection.")
-vlc_module_begin();
- set_shortname( "FTP" );
- set_description( _("FTP input") );
- set_capability( "access2", 0 );
- set_category( CAT_INPUT );
- set_subcategory( SUBCAT_INPUT_ACCESS );
- add_integer( "ftp-caching", 2 * DEFAULT_PTS_DELAY / 1000, NULL,
- CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
- add_string( "ftp-user", "anonymous", NULL, USER_TEXT, USER_LONGTEXT,
- VLC_FALSE );
- add_string( "ftp-pwd", "anonymous@dummy.org", NULL, PASS_TEXT,
- PASS_LONGTEXT, VLC_FALSE );
- add_string( "ftp-account", "anonymous", NULL, ACCOUNT_TEXT,
- ACCOUNT_LONGTEXT, VLC_FALSE );
- add_shortcut( "ftp" );
- set_callbacks( Open, Close );
-vlc_module_end();
+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_string( "ftp-user", "anonymous", USER_TEXT, USER_LONGTEXT,
+ false )
+ add_string( "ftp-pwd", "anonymous@example.com", PASS_TEXT,
+ PASS_LONGTEXT, false )
+ add_string( "ftp-account", "anonymous", ACCOUNT_TEXT,
+ ACCOUNT_LONGTEXT, false )
+ add_shortcut( "ftp", "ftps", "ftpes" )
+ set_callbacks( InOpen, InClose )
+
+#ifdef ENABLE_SOUT
+ 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", "ftps", "ftpes" )
+ set_callbacks( OutOpen, OutClose )
+#endif
+vlc_module_end ()
/*****************************************************************************
* Local prototypes
*****************************************************************************/
-static int Read( access_t *, uint8_t *, int );
-static int Seek( access_t *, int64_t );
+static ssize_t Read( access_t *, uint8_t *, size_t );
+static int Seek( access_t *, uint64_t );
static int Control( access_t *, int, va_list );
+#ifdef ENABLE_SOUT
+static int OutSeek( sout_access_out_t *, off_t );
+static ssize_t Write( sout_access_out_t *, block_t * );
+#endif
+
+static void FeaturesCheck( void *, const char * );
+
+typedef struct ftp_features_t
+{
+ bool b_unicode;
+ bool b_authtls;
+} ftp_features_t;
+
+enum tls_mode_e
+{
+ NONE = 0,
+ IMPLICIT,/* ftps */
+ EXPLICIT /* ftpes */
+};
struct access_sys_t
{
vlc_url_t url;
- int fd_cmd;
- int fd_data;
-
+ ftp_features_t features;
+ vlc_tls_creds_t *p_creds;
+ enum tls_mode_e tlsmode;
+ struct
+ {
+ vlc_tls_t *p_tls;
+ v_socket_t *p_vs;
+ int fd;
+ } cmd, data;
+
char sz_epsv_ip[NI_MAXNUMERICHOST];
+ bool out;
+ bool directory;
+ uint64_t size;
};
+#define GET_OUT_SYS( p_this ) \
+ ((access_sys_t *)(((sout_access_out_t *)(p_this))->p_sys))
+
+static int ftp_SendCommand( vlc_object_t *obj, access_sys_t *sys,
+ const char *fmt, ... )
+{
+ size_t fmtlen = strlen( fmt );
+ char fmtbuf[fmtlen + 3];
+
+ memcpy( fmtbuf, fmt, fmtlen );
+ memcpy( fmtbuf + fmtlen, "\r\n", 3 );
+
+ va_list args;
+ char *cmd;
+ int val;
+
+ va_start( args, fmt );
+ val = vasprintf( &cmd, fmtbuf, args );
+ va_end( args );
+ if( unlikely(val == -1) )
+ return -1;
+
+ msg_Dbg( obj, "sending request: \"%.*s\" (%d bytes)", val - 2, cmd, val );
+ if( net_Write( obj, sys->cmd.fd, sys->cmd.p_vs, cmd, val ) != val )
+ {
+ msg_Err( obj, "request failure" );
+ val = -1;
+ }
+ else
+ val = 0;
+ free( cmd );
+ return val;
+}
+
+/* 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:
-static int ftp_SendCommand( access_t *, char *, ... );
-static int ftp_ReadCommand( access_t *, int *, char ** );
-static int ftp_StartStream( access_t *, int64_t );
-static int ftp_StopStream ( access_t *);
+ * \377\377.
+ * \377\376x where x is one byte.
+ * \377\375x where x is one byte. The server is obliged to send \377\374x
+ * immediately after reading x.
+ * \377\374x where x is one byte.
+ * \377\373x where x is one byte. The server is obliged to send \377\376x
+ * immediately after reading x.
+ * \377x for any other byte x.
-static int Connect( access_t *p_access, access_sys_t *p_sys )
+ These strings are not part of the requests, except in the case \377\377,
+ where the request contains one \377. */
+static int ftp_RecvAnswer( vlc_object_t *obj, access_sys_t *sys,
+ int *restrict codep, char **restrict strp,
+ void (*cb)(void *, const char *), void *opaque )
{
- int fd, i_answer;
- char *psz;
+ if( codep != NULL )
+ *codep = 500;
+ if( strp != NULL )
+ *strp = NULL;
- /* *** Open a TCP connection with server *** */
- msg_Dbg( p_access, "waiting for connection..." );
- p_sys->fd_cmd = fd = net_ConnectTCP( p_access, p_sys->url.psz_host,
- p_sys->url.i_port );
- if( fd < 0 )
+ char *resp = net_Gets( obj, sys->cmd.fd, sys->cmd.p_vs );
+ if( resp == NULL )
{
- msg_Err( p_access, "failed to connect with server" );
- return -1;
+ msg_Err( obj, "response failure" );
+ goto error;
}
- for( ;; )
+ char *end;
+ unsigned code = strtoul( resp, &end, 10 );
+ if( (end - resp) != 3 || (*end != '-' && *end != ' ') )
{
- if( ftp_ReadCommand( p_access, &i_answer, NULL ) != 1 )
+ msg_Err( obj, "malformatted response" );
+ goto error;
+ }
+ msg_Dbg( obj, "received response: \"%s\"", resp );
+
+ if( *end == '-' ) /* Multi-line response */
+ {
+ bool done;
+
+ *end = ' ';
+ do
{
- break;
+ char *line = net_Gets( obj, sys->cmd.fd, sys->cmd.p_vs );
+ if( line == NULL )
+ {
+ msg_Err( obj, "response failure" );
+ goto error;
+ }
+
+ done = !strncmp( resp, line, 4 );
+ if( !done )
+ cb( opaque, line );
+ free( line );
}
+ while( !done );
+ }
+
+ if( codep != NULL )
+ *codep = code;
+ if( strp != NULL )
+ *strp = resp;
+ else
+ free( resp );
+ return code / 100;
+error:
+ free( resp );
+ return -1;
+}
+
+static void DummyLine( void *data, const char *str )
+{
+ (void) data; (void) str;
+}
+
+static int ftp_RecvCommand( vlc_object_t *obj, access_sys_t *sys,
+ int *restrict codep, char **restrict strp )
+{
+ return ftp_RecvAnswer( obj, sys, codep, strp, DummyLine, NULL );
+}
+
+static int ftp_StartStream( vlc_object_t *, access_sys_t *, uint64_t );
+static int ftp_StopStream ( vlc_object_t *, access_sys_t * );
+
+static void readTLSMode( access_sys_t *p_sys, const char * psz_access )
+{
+ if ( !strncmp( psz_access, "ftps", 4 ) )
+ p_sys->tlsmode = IMPLICIT;
+ else
+ if ( !strncmp( psz_access, "ftpes", 5 ) )
+ p_sys->tlsmode = EXPLICIT;
+ else
+ p_sys->tlsmode = NONE;
+}
+
+static int createCmdTLS( vlc_object_t *p_access, access_sys_t *p_sys, int fd,
+ const char *psz_session_name )
+{
+ p_sys->p_creds = vlc_tls_ClientCreate( p_access );
+ if( p_sys->p_creds == NULL ) return -1;
+
+ /* TLS/SSL handshake */
+ p_sys->cmd.p_tls = vlc_tls_ClientSessionCreate( p_sys->p_creds, fd,
+ p_sys->url.psz_host,
+ psz_session_name,
+ NULL, NULL );
+ if( p_sys->cmd.p_tls == NULL )
+ {
+ msg_Err( p_access, "cannot establish FTP/TLS session on command channel" );
+ return -1;
+ }
+ p_sys->cmd.p_vs = &p_sys->cmd.p_tls->sock;
+
+ return 0;
+}
+
+static void clearCmdTLS( access_sys_t *p_sys )
+{
+ if ( p_sys->cmd.p_tls ) vlc_tls_SessionDelete( p_sys->cmd.p_tls );
+ if ( p_sys->p_creds ) vlc_tls_Delete( p_sys->p_creds );
+ p_sys->cmd.p_tls = NULL;
+ p_sys->cmd.p_vs = NULL;
+ p_sys->p_creds = NULL;
+}
+
+static int Login( vlc_object_t *p_access, access_sys_t *p_sys )
+{
+ int i_answer;
+
+ /* *** Open a TCP connection with server *** */
+ int fd = p_sys->cmd.fd = 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;
+ }
+
+ if ( p_sys->tlsmode == IMPLICIT ) /* FTPS Mode */
+ {
+ if ( createCmdTLS( p_access, p_sys, fd, "ftps") < 0 )
+ goto error;
}
+
+ while( ftp_RecvCommand( 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 );
- psz = var_CreateGetString( p_access, "ftp-user" );
- if( ftp_SendCommand( p_access, "USER %s", psz ) < 0 ||
- ftp_ReadCommand( p_access, &i_answer, NULL ) < 0 )
+ /* Features check first */
+ if( ftp_SendCommand( p_access, p_sys, "FEAT" ) < 0
+ || ftp_RecvAnswer( p_access, p_sys, NULL, NULL,
+ FeaturesCheck, &p_sys->features ) < 0 )
+ {
+ msg_Err( p_access, "cannot get server features" );
+ return -1;
+ }
+
+ /* Create TLS Session */
+ if( p_sys->tlsmode == EXPLICIT )
+ {
+ if ( ! p_sys->features.b_authtls )
+ {
+ msg_Err( p_access, "Server does not support TLS" );
+ return -1;
+ }
+
+ if( ftp_SendCommand( p_access, p_sys, "AUTH TLS" ) < 0
+ || ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) < 0
+ || i_answer != 234 )
+ {
+ msg_Err( p_access, "cannot switch to TLS: server replied with code %d",
+ i_answer );
+ return -1;
+ }
+
+ if ( createCmdTLS( p_access, p_sys, fd, "ftpes") < 0 )
+ {
+ goto error;
+ }
+ }
+
+ if( p_sys->tlsmode != NONE )
+ {
+ if( ftp_SendCommand( p_access, p_sys, "PBSZ 0" ) < 0 ||
+ ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) < 0 ||
+ i_answer != 200 )
+ {
+ msg_Err( p_access, "Can't truncate Protection buffer size for TLS" );
+ goto error;
+ }
+
+ if( ftp_SendCommand( p_access, p_sys, "PROT P" ) < 0 ||
+ ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) < 0 ||
+ i_answer != 200 )
+ {
+ msg_Err( p_access, "Can't set Data channel protection" );
+ goto error;
+ }
+ }
+
+ /* Send credentials over channel */
+ char *psz;
+
+ if( p_sys->url.psz_username && *p_sys->url.psz_username )
+ psz = strdup( p_sys->url.psz_username );
+ else
+ psz = var_InheritString( p_access, "ftp-user" );
+ if( !psz )
+ goto error;
+
+ if( ftp_SendCommand( p_access, p_sys, "USER %s", psz ) < 0 ||
+ ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) < 0 )
{
free( psz );
- return -1;
+ goto error;
}
free( psz );
switch( i_answer / 100 )
{
case 2:
- msg_Dbg( p_access, "user accepted" );
+ /* X.509 auth successful after AUTH TLS / RFC 2228 sec. 4 */
+ if ( i_answer == 232 )
+ msg_Dbg( p_access, "user accepted and authenticated" );
+ else
+ msg_Dbg( p_access, "user accepted" );
break;
case 3:
msg_Dbg( p_access, "password needed" );
- psz = var_CreateGetString( p_access, "ftp-pwd" );
- if( ftp_SendCommand( p_access, "PASS %s", psz ) < 0 ||
- ftp_ReadCommand( p_access, &i_answer, NULL ) < 0 )
+ if( p_sys->url.psz_password && *p_sys->url.psz_password )
+ psz = strdup( p_sys->url.psz_password );
+ else
+ psz = var_InheritString( p_access, "ftp-pwd" );
+ if( !psz )
+ goto error;
+
+ if( ftp_SendCommand( p_access, p_sys, "PASS %s", psz ) < 0 ||
+ ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) < 0 )
{
free( psz );
- return -1;
+ goto error;
}
free( psz );
break;
case 3:
msg_Dbg( p_access, "account needed" );
- psz = var_CreateGetString( p_access, "ftp-account" );
- if( ftp_SendCommand( p_access, "ACCT %s",
+ psz = var_InheritString( p_access, "ftp-account" );
+ if( ftp_SendCommand( p_access, p_sys, "ACCT %s",
psz ) < 0 ||
- ftp_ReadCommand( p_access, &i_answer, NULL ) < 0 )
+ ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) < 0 )
{
free( psz );
- return -1;
+ goto error;
}
free( psz );
if( i_answer / 100 != 2 )
{
msg_Err( p_access, "account rejected" );
- return -1;
+ dialog_Fatal( p_access,
+ _("Network interaction failed"),
+ "%s", _("Your account was rejected.") );
+ goto error;
}
msg_Dbg( p_access, "account accepted" );
break;
default:
msg_Err( p_access, "password rejected" );
- return -1;
+ dialog_Fatal( p_access, _("Network interaction failed"),
+ "%s", _("Your password was rejected.") );
+ goto error;
}
break;
default:
msg_Err( p_access, "user rejected" );
- return -1;
+ dialog_Fatal( p_access, _("Network interaction failed"), "%s",
+ _("Your connection attempt to the server was rejected.") );
+ goto error;
}
return 0;
+
+error:
+ clearCmdTLS( p_sys );
+ return -1;
}
-/****************************************************************************
- * Open: connect to ftp server and ask for file
- ****************************************************************************/
-static int Open( vlc_object_t *p_this )
+static void FeaturesCheck( void *opaque, const char *feature )
{
- access_t *p_access = (access_t*)p_this;
- access_sys_t *p_sys;
- char *psz;
+ ftp_features_t *features = opaque;
- int i_answer;
- char *psz_arg;
+ if( strcasestr( feature, "UTF8" ) != NULL )
+ features->b_unicode = true;
+ else
+ if( strcasestr( feature, "AUTH TLS" ) != NULL )
+ features->b_authtls = true;
+}
- /* Init p_access */
- p_access->pf_read = Read;
- p_access->pf_block = NULL;
- p_access->pf_seek = Seek;
- p_access->pf_control = Control;
- p_access->info.i_update = 0;
- p_access->info.i_size = 0;
- p_access->info.i_pos = 0;
- p_access->info.b_eof = VLC_FALSE;
- p_access->info.i_title = 0;
- p_access->info.i_seekpoint = 0;
- p_access->p_sys = p_sys = malloc( sizeof( access_sys_t ) );
- memset( p_sys, 0, sizeof( access_sys_t ) );
- p_sys->fd_cmd = -1;
- p_sys->fd_data = -1;
+static const char *IsASCII( const char *str )
+{
+ int8_t c;
+ for( const char *p = str; (c = *p) != '\0'; p++ )
+ if( c < 0 )
+ return NULL;
+ return str;
+}
- /* *** Parse URL and get server addr/port and path *** */
- psz = p_access->psz_path;
- while( *psz == '/' )
+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 )
{
- psz++;
+ msg_Err( p_access, "cannot request extended passive mode" );
+ goto error;
}
- vlc_UrlParse( &p_sys->url, psz, 0 );
- if( p_sys->url.psz_host == NULL || *p_sys->url.psz_host == '\0' )
+ if( ftp_RecvCommand( p_access, p_sys, NULL, NULL ) == 2 )
{
- msg_Err( p_access, "invalid server name" );
- goto exit_error;
+ if( net_GetPeerAddress( p_sys->cmd.fd, p_sys->sz_epsv_ip, NULL ) )
+ goto error;
}
- if( p_sys->url.i_port <= 0 )
+ else
{
- p_sys->url.i_port = 21; /* default port */
+ /* 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" );
+ clearCmdTLS( p_sys );
+ net_Close( p_sys->cmd.fd );
+
+ if( Login( p_access, p_sys ) )
+ goto error;
}
- /* FTP URLs are relative to user's default directory (RFC1738)
- For absolute path use ftp://foo.bar//usr/local/etc/filename */
+ if( (p_sys->features.b_unicode ? IsUTF8 : IsASCII)(p_sys->url.psz_path) == NULL )
+ {
+ msg_Err( p_access, "unsupported path: \"%s\"", p_sys->url.psz_path );
+ goto error;
+ }
- if( *p_sys->url.psz_path == '/' )
- p_sys->url.psz_path++;
+ /* check binary mode support */
+ if( ftp_SendCommand( p_access, p_sys, "TYPE I" ) < 0 ||
+ ftp_RecvCommand( p_access, p_sys, NULL, NULL ) != 2 )
+ {
+ msg_Err( p_access, "cannot set binary transfer mode" );
+ goto error;
+ }
- if( Connect( p_access, p_sys ) < 0 )
- goto exit_error;
+ return 0;
- /* Extended passive mode */
- if( ftp_SendCommand( p_access, "EPSV ALL" ) < 0 )
+error:
+ clearCmdTLS( p_sys );
+ net_Close( p_sys->cmd.fd );
+ return -1;
+}
+
+
+static int parseURL( vlc_url_t *url, const char *path, enum tls_mode_e mode )
+{
+ 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 == '\0' )
+ return VLC_EGENERIC;
+
+ if( url->i_port <= 0 )
{
- msg_Err( p_access, "cannot request extended passive mode" );
- return -1;
+ if( mode == IMPLICIT )
+ url->i_port = IPPORT_FTPS;
+ else
+ url->i_port = IPPORT_FTP; /* default port */
}
- if( ftp_ReadCommand( p_access, &i_answer, NULL ) == 2 )
+ if( url->psz_path == NULL )
+ return VLC_SUCCESS;
+ /* 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 )
{
- if( net_GetPeerAddress( p_sys->fd_cmd, p_sys->sz_epsv_ip, NULL ) )
- goto exit_error;
+ assert( url->psz_path[0] == '/' );
+ url->psz_path++;
}
- else
+
+ char *type = strstr( url->psz_path, ";type=" );
+ if( type )
{
- /* 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.
- */
- net_Close( p_sys->fd_cmd );
- p_sys->fd_cmd = -1;
- *p_sys->sz_epsv_ip = '\0';
+ *type = '\0';
+ if( strchr( "iI", type[6] ) == NULL )
+ return VLC_EGENERIC; /* ASCII and directory not supported */
+ }
+ decode_URI( url->psz_path );
+ return VLC_SUCCESS;
+}
- msg_Info( p_access, "FTP Extended passive mode disabled" );
- if( ( p_sys->fd_cmd = Connect( p_access, p_sys ) ) < 0 )
- goto exit_error;
+/****************************************************************************
+ * 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->data.fd = -1;
+ p_sys->out = false;
+ p_sys->directory = false;
+ p_sys->size = 0;
+ readTLSMode( p_sys, p_access->psz_access );
+
+ if( parseURL( &p_sys->url, p_access->psz_location, p_sys->tlsmode ) )
+ goto exit_error;
+
+ if( Connect( p_this, p_sys ) )
+ goto exit_error;
+
+ /* get size */
+ if( p_sys->url.psz_path == NULL )
+ p_sys->directory = true;
+ else
+ if( ftp_SendCommand( p_this, p_sys, "SIZE %s", p_sys->url.psz_path ) < 0 )
+ goto error;
+ else
+ if ( ftp_RecvCommand( p_this, p_sys, NULL, &psz_arg ) == 2 )
+ {
+ p_sys->size = atoll( &psz_arg[4] );
+ free( psz_arg );
+ msg_Dbg( p_access, "file size: %"PRIu64, p_sys->size );
+ }
+ else
+ if( ftp_SendCommand( p_this, p_sys, "CWD %s", p_sys->url.psz_path ) < 0 )
+ goto error;
+ else
+ if( ftp_RecvCommand( p_this, p_sys, NULL, NULL ) != 2 )
+ {
+ msg_Err( p_this, "file or directory does not exist" );
+ goto error;
}
+ else
+ p_sys->directory = true;
- /* binary mode */
- if( ftp_SendCommand( p_access, "TYPE I" ) < 0 ||
- ftp_ReadCommand( p_access, &i_answer, NULL ) != 2 )
+ /* Start the 'stream' */
+ if( ftp_StartStream( p_this, p_sys, 0 ) < 0 )
{
- msg_Err( p_access, "cannot set binary transfer mode" );
+ msg_Err( p_this, "cannot retrieve file" );
+ clearCmdTLS( p_sys );
+ net_Close( p_sys->cmd.fd );
goto exit_error;
}
- /* get size */
- if( ftp_SendCommand( p_access, "SIZE %s", p_sys->url.psz_path ) < 0 ||
- ftp_ReadCommand( p_access, &i_answer, &psz_arg ) != 2 )
+ return VLC_SUCCESS;
+
+error:
+ clearCmdTLS( p_sys );
+ net_Close( p_sys->cmd.fd );
+
+exit_error:
+ vlc_UrlClean( &p_sys->url );
+ free( p_sys );
+ return VLC_EGENERIC;
+}
+
+#ifdef ENABLE_SOUT
+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->data.fd = -1;
+ p_sys->out = true;
+ readTLSMode( p_sys, p_access->psz_access );
+
+ if( parseURL( &p_sys->url, p_access->psz_path, p_sys->tlsmode ) )
+ goto exit_error;
+ if( p_sys->url.psz_path == NULL )
{
- msg_Err( p_access, "cannot get file size" );
+ msg_Err( p_this, "no filename specified" );
goto exit_error;
}
- p_access->info.i_size = atoll( &psz_arg[4] );
- free( psz_arg );
- msg_Dbg( p_access, "file size: "I64Fd, p_access->info.i_size );
+
+ if( Connect( p_this, p_sys ) )
+ goto exit_error;
/* Start the 'stream' */
- if( ftp_StartStream( p_access, 0 ) < 0 )
+ if( ftp_StartStream( p_this, p_sys, 0 ) < 0 )
{
- msg_Err( p_access, "cannot retrieve file" );
+ msg_Err( p_access, "cannot store file" );
+ clearCmdTLS( p_sys );
+ net_Close( p_sys->cmd.fd );
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 );
+ p_access->pf_seek = OutSeek;
+ p_access->pf_write = Write;
+ p_access->p_sys = (void *)p_sys;
return VLC_SUCCESS;
exit_error:
- if( p_sys->fd_cmd >= 0 )
- net_Close( p_sys->fd_cmd );
vlc_UrlClean( &p_sys->url );
free( p_sys );
return VLC_EGENERIC;
}
+#endif
/*****************************************************************************
* Close: free unused data structures
*****************************************************************************/
-static void Close( vlc_object_t *p_this )
+static void Close( vlc_object_t *p_access, access_sys_t *p_sys )
{
- access_t *p_access = (access_t*)p_this;
- access_sys_t *p_sys = p_access->p_sys;
-
msg_Dbg( p_access, "stopping stream" );
- ftp_StopStream( p_access );
+ ftp_StopStream( p_access, p_sys );
- if( ftp_SendCommand( p_access, "QUIT" ) < 0 )
+ if( ftp_SendCommand( p_access, p_sys, "QUIT" ) < 0 )
{
msg_Warn( p_access, "cannot quit" );
}
else
{
- ftp_ReadCommand( p_access, NULL, NULL );
+ ftp_RecvCommand( p_access, p_sys, NULL, NULL );
}
- net_Close( p_sys->fd_cmd );
+
+ clearCmdTLS( p_sys );
+ net_Close( p_sys->cmd.fd );
/* 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);
+}
+
+#ifdef ENABLE_SOUT
+static void OutClose( vlc_object_t *p_this )
+{
+ Close( p_this, GET_OUT_SYS(p_this));
+}
+#endif
+
+
/*****************************************************************************
* Seek: try to go at the right place
*****************************************************************************/
-static int Seek( access_t *p_access, int64_t i_pos )
+static int _Seek( vlc_object_t *p_access, access_sys_t *p_sys, uint64_t i_pos )
{
- if( i_pos < 0 )
- {
- return VLC_EGENERIC;
- }
- msg_Dbg( p_access, "seeking to "I64Fd, i_pos );
+ msg_Dbg( p_access, "seeking to %"PRIu64, i_pos );
- ftp_StopStream( p_access );
- if( ftp_StartStream( p_access, i_pos ) < 0 )
- {
- p_access->info.b_eof = VLC_TRUE;
+ 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;
- }
- p_access->info.b_eof = VLC_FALSE;
+ return VLC_SUCCESS;
+}
+
+static int Seek( access_t *p_access, uint64_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;
}
+#ifdef ENABLE_SOUT
+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);
+}
+#endif
+
/*****************************************************************************
* Read:
*****************************************************************************/
-static int Read( access_t *p_access, uint8_t *p_buffer, int i_len )
+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;
+
+ assert( p_sys->data.fd != -1 );
+ assert( !p_sys->out );
if( p_access->info.b_eof )
return 0;
- i_read = net_Read( p_access, p_sys->fd_data, NULL, p_buffer, i_len,
- VLC_FALSE );
- if( i_read == 0 )
- p_access->info.b_eof = VLC_TRUE;
- else if( i_read > 0 )
- p_access->info.i_pos += i_read;
+ if( p_sys->directory )
+ {
+ char *psz_line = net_Gets( p_access, p_sys->data.fd, p_sys->data.p_vs );
+ if( !psz_line )
+ {
+ p_access->info.b_eof = true;
+ return 0;
+ }
+ else
+ {
+ snprintf( (char*)p_buffer, i_len, "%s://%s:%d/%s/%s\n",
+ ( p_sys->tlsmode == NONE ) ? "ftp" :
+ ( ( p_sys->tlsmode == IMPLICIT ) ? "ftps" : "ftpes" ),
+ 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->data.fd, p_sys->data.p_vs,
+ 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:
+ *****************************************************************************/
+#ifdef ENABLE_SOUT
+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->data.fd != -1 );
+
+ while( p_buffer != NULL )
+ {
+ block_t *p_next = p_buffer->p_next;;
- return i_read;
+ i_write += net_Write( p_access, p_sys->data.fd, p_sys->data.p_vs,
+ p_buffer->p_buffer, p_buffer->i_buffer );
+ block_Release( p_buffer );
+
+ p_buffer = p_next;
+ }
+
+ return i_write;
}
+#endif
/*****************************************************************************
* Control:
*****************************************************************************/
static int Control( access_t *p_access, int i_query, va_list args )
{
- vlc_bool_t *pb_bool;
- int *pi_int;
- int64_t *pi_64;
- vlc_value_t val;
+ bool *pb_bool;
+ int64_t *pi_64;
switch( i_query )
{
- /* */
case ACCESS_CAN_SEEK:
- pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
- *pb_bool = VLC_TRUE;
+ pb_bool = (bool*)va_arg( args, bool* );
+ *pb_bool = !p_access->p_sys->directory;
break;
case ACCESS_CAN_FASTSEEK:
- pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
- *pb_bool = VLC_FALSE;
+ pb_bool = (bool*)va_arg( args, bool* );
+ *pb_bool = false;
break;
case ACCESS_CAN_PAUSE:
- pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
- *pb_bool = VLC_TRUE; /* FIXME */
+ pb_bool = (bool*)va_arg( args, bool* );
+ *pb_bool = true; /* FIXME */
break;
case ACCESS_CAN_CONTROL_PACE:
- pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
- *pb_bool = VLC_TRUE; /* FIXME */
+ pb_bool = (bool*)va_arg( args, bool* );
+ *pb_bool = true; /* FIXME */
break;
-
- /* */
- case ACCESS_GET_MTU:
- pi_int = (int*)va_arg( args, int * );
- *pi_int = 0;
+ case ACCESS_GET_SIZE:
+ *va_arg( args, uint64_t * ) = p_access->p_sys->size;
break;
case ACCESS_GET_PTS_DELAY:
pi_64 = (int64_t*)va_arg( args, int64_t * );
- var_Get( p_access, "ftp-caching", &val );
- *pi_64 = (int64_t)var_GetInteger( p_access, "ftp-caching" ) * I64C(1000);
+ *pi_64 = INT64_C(1000)
+ * var_InheritInteger( p_access, "network-caching" );
break;
- /* */
case ACCESS_SET_PAUSE_STATE:
- /* Nothing to do */
+ 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:
- return VLC_EGENERIC;
-
default:
- msg_Warn( p_access, "unimplemented query in control" );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
-/*****************************************************************************
- * ftp_*:
- *****************************************************************************/
-static int ftp_SendCommand( access_t *p_access, char *psz_fmt, ... )
-{
- access_sys_t *p_sys = p_access->p_sys;
- va_list args;
- char *psz_cmd;
-
- va_start( args, psz_fmt );
- vasprintf( &psz_cmd, psz_fmt, args );
- va_end( args );
-
- msg_Dbg( p_access, "ftp_SendCommand:\"%s\"", psz_cmd);
- if( net_Printf( VLC_OBJECT(p_access), p_sys->fd_cmd, NULL, "%s\r\n",
- 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:
-
- * \377\377.
- * \377\376x where x is one byte.
- * \377\375x where x is one byte. The server is obliged to send \377\374x
- * immediately after reading x.
- * \377\374x where x is one byte.
- * \377\373x where x is one byte. The server is obliged to send \377\376x
- * immediately after reading x.
- * \377x for any other byte x.
-
- These strings are not part of the requests, except in the case \377\377,
- where the request contains one \377. */
-static int ftp_ReadCommand( access_t *p_access,
- int *pi_answer, char **ppsz_answer )
-{
- access_sys_t *p_sys = p_access->p_sys;
- char *psz_line;
- int i_answer;
-
- psz_line = net_Gets( p_access, p_sys->fd_cmd, NULL );
- msg_Dbg( p_access, "answer=%s", psz_line );
- if( psz_line == NULL || strlen( psz_line ) < 3 )
- {
- msg_Err( p_access, "cannot get answer" );
- if( psz_line ) free( psz_line );
- if( pi_answer ) *pi_answer = 500;
- if( ppsz_answer ) *ppsz_answer = NULL;
- return -1;
- }
-
- 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( access_t *p_access, off_t i_start )
+static int ftp_StartStream( vlc_object_t *p_access, access_sys_t *p_sys,
+ uint64_t i_start )
{
- access_sys_t *p_sys = p_access->p_sys;
-
- char psz_ipv4[16], *psz_ip;
+ char psz_ipv4[16], *psz_ip = p_sys->sz_epsv_ip;
int i_answer;
char *psz_arg, *psz_parser;
int i_port;
- psz_ip = p_sys->sz_epsv_ip;
+ assert( p_sys->data.fd == -1 );
- if( ( ftp_SendCommand( p_access, *psz_ip ? "EPSV" : "PASV" ) < 0 )
- || ( ftp_ReadCommand( p_access, &i_answer, &psz_arg ) != 2 ) )
+ if( ( ftp_SendCommand( p_access, p_sys, *psz_ip ? "EPSV" : "PASV" ) < 0 )
+ || ( ftp_RecvCommand( p_access, p_sys, &i_answer, &psz_arg ) != 2 ) )
{
msg_Err( p_access, "cannot set passive mode" );
return VLC_EGENERIC;
return VLC_EGENERIC;
}
- if( psz_ip != NULL )
+ if( *psz_ip )
{
char psz_fmt[7] = "(|||%u";
psz_fmt[1] = psz_fmt[2] = psz_fmt[3] = psz_parser[1];
}
else
{
- unsigned a1, a2, a3, a4, p1, p2;
+ 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 )
msg_Dbg( p_access, "ip:%s port:%d", psz_ip, i_port );
- if( ftp_SendCommand( p_access, "TYPE I" ) < 0 ||
- ftp_ReadCommand( p_access, &i_answer, NULL ) != 2 )
+ if( ftp_SendCommand( p_access, p_sys, "TYPE I" ) < 0 ||
+ ftp_RecvCommand( 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, "REST "I64Fu, i_start ) < 0 ||
- ftp_ReadCommand( p_access, &i_answer, NULL ) > 3 )
+ if( ftp_SendCommand( p_access, p_sys, "REST %"PRIu64, i_start ) < 0 ||
+ ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) > 3 )
{
- msg_Err( p_access, "cannot set restart point" );
+ 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 )
+ p_sys->data.fd = net_ConnectTCP( p_access, psz_ip, i_port );
+ if( p_sys->data.fd < 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 );
- /* "1xx" message */
- if( ftp_SendCommand( p_access, "RETR %s", p_sys->url.psz_path ) < 0 ||
- ftp_ReadCommand( p_access, &i_answer, NULL ) > 2 )
+ if( p_sys->directory )
{
- msg_Err( p_access, "cannot retreive file" );
+ if( ftp_SendCommand( p_access, p_sys, "NLST" ) < 0 ||
+ ftp_RecvCommand( p_access, p_sys, NULL, &psz_arg ) > 2 )
+ {
+ msg_Err( p_access, "cannot list directory contents" );
return VLC_EGENERIC;
+ }
}
+ else
+ {
+ /* "1xx" message */
+ assert( p_sys->url.psz_path );
+ if( ftp_SendCommand( p_access, p_sys, "%s %s",
+ p_sys->out ? "STOR" : "RETR",
+ p_sys->url.psz_path ) < 0
+ || ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) > 2 )
+ {
+ msg_Err( p_access, "cannot retrieve file" );
+ return VLC_EGENERIC;
+ }
+ }
+
+ if( p_sys->tlsmode != NONE )
+ {
+ /* FIXME: Do Reuse TLS Session */
+ /* TLS/SSL handshake */
+ p_sys->data.p_tls = vlc_tls_ClientSessionCreate( p_sys->p_creds,
+ p_sys->data.fd, p_sys->url.psz_host,
+ ( p_sys->tlsmode == EXPLICIT ) ? "ftpes-data"
+ : "ftps-data",
+ NULL, NULL );
+ if( p_sys->data.p_tls == NULL )
+ {
+ msg_Err( p_access, "cannot establish FTP/TLS session for data" \
+ ": server not allowing new session ?" );
+ return VLC_EGENERIC;
+ }
+ p_sys->data.p_vs = &p_sys->data.p_tls->sock;
+ }
+ else
+ shutdown( p_sys->data.fd, p_sys->out ? SHUT_RD : SHUT_WR );
+
return VLC_SUCCESS;
}
-static int ftp_StopStream ( access_t *p_access )
+static int ftp_StopStream ( vlc_object_t *p_access, access_sys_t *p_sys )
{
- access_sys_t *p_sys = p_access->p_sys;
-
- int i_answer;
-
- if( ftp_SendCommand( p_access, "ABOR" ) < 0 )
+ 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;
+ if( p_sys->data.fd > 0 )
+ {
+ if ( p_sys->data.p_tls ) vlc_tls_SessionDelete( p_sys->data.p_tls );
+ net_Close( p_sys->data.fd );
+ }
+ p_sys->data.fd = -1;
+ p_sys->data.p_tls = NULL;
+ p_sys->data.p_vs = NULL;
return VLC_EGENERIC;
}
- if( p_sys->fd_data > 0 )
+
+ if( p_sys->data.fd != -1 )
{
- net_Close( p_sys->fd_data );
- p_sys->fd_data = -1;
- ftp_ReadCommand( p_access, &i_answer, NULL );
+ if ( p_sys->data.p_tls ) vlc_tls_SessionDelete( p_sys->data.p_tls );
+ net_Close( p_sys->data.fd );
+ p_sys->data.fd = -1;
+ p_sys->data.p_tls = NULL;
+ p_sys->data.p_vs = NULL;
+ /* Read the final response from RETR/STOR, i.e. 426 or 226 */
+ ftp_RecvCommand( p_access, p_sys, NULL, NULL );
}
- ftp_ReadCommand( p_access, &i_answer, NULL );
+ /* Read the response from ABOR, i.e. 226 or 225 */
+ ftp_RecvCommand( p_access, p_sys, NULL, NULL );
return VLC_SUCCESS;
}
-