/*****************************************************************************
* 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.
*****************************************************************************/
/*****************************************************************************
return val;
}
-static int ftp_ReadCommand( vlc_object_t *, access_sys_t *, int *, char ** );
+/* 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_RecvAnswer( vlc_object_t *obj, access_sys_t *sys,
+ int *restrict codep, char **restrict strp,
+ void (*cb)(void *, const char *), void *opaque )
+{
+ if( codep != NULL )
+ *codep = 500;
+ if( strp != NULL )
+ *strp = NULL;
+
+ char *resp = net_Gets( obj, sys->fd_cmd, NULL );
+ if( resp == NULL )
+ {
+ msg_Err( obj, "response failure" );
+ goto error;
+ }
+
+ char *end;
+ unsigned code = strtoul( resp, &end, 10 );
+ if( (end - resp) != 3 || (*end != '-' && *end != ' ') )
+ {
+ msg_Err( obj, "malformatted response" );
+ goto error;
+ }
+ msg_Dbg( obj, "received response: \"%s\"", resp );
+
+ if( *end == '-' ) /* Multi-line response */
+ {
+ bool done;
+
+ *end = ' ';
+ do
+ {
+ char *line = net_Gets( obj, sys->fd_cmd, NULL );
+ 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 * );
return -1;
}
- while( ftp_ReadCommand( p_access, p_sys, &i_answer, NULL ) == 1 );
+ while( ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) == 1 );
if( i_answer / 100 != 2 )
{
return -1;
if( ftp_SendCommand( p_access, p_sys, "USER %s", psz ) < 0 ||
- ftp_ReadCommand( p_access, p_sys, &i_answer, NULL ) < 0 )
+ ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) < 0 )
{
free( psz );
return -1;
return -1;
if( ftp_SendCommand( p_access, p_sys, "PASS %s", psz ) < 0 ||
- ftp_ReadCommand( p_access, p_sys, &i_answer, NULL ) < 0 )
+ ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) < 0 )
{
free( psz );
return -1;
psz = var_InheritString( 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 )
+ ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) < 0 )
{
free( psz );
return -1;
return 0;
}
+static void FeaturesCheck( void *opaque, const char *feature )
+{
+ bool *unicode = opaque;
+
+ if( strcasestr( feature, "UTF8" ) != NULL )
+ *unicode = true;
+}
+
+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;
+}
+
static int Connect( vlc_object_t *p_access, access_sys_t *p_sys )
{
if( Login( p_access, p_sys ) < 0 )
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;
+ goto error;
}
- if( ftp_ReadCommand( p_access, p_sys, NULL, NULL ) == 2 )
+ if( ftp_RecvCommand( 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;
- }
+ goto error;
}
else
{
net_Close( p_sys->fd_cmd );
if( Login( p_access, p_sys ) )
- {
- net_Close( p_sys->fd_cmd );
- return -1;
- }
+ goto error;
+ }
+
+ /* features check */
+ bool unicode = false;
+ if( ftp_SendCommand( p_access, p_sys, "FEAT" ) < 0
+ || ftp_RecvAnswer( p_access, p_sys, NULL, NULL,
+ FeaturesCheck, &unicode ) < 0 )
+ {
+ msg_Err( p_access, "cannot get server features" );
+ goto error;
+ }
+
+ if( (unicode ? IsUTF8 : IsASCII)(p_sys->url.psz_path) == NULL )
+ {
+ msg_Err( p_access, "unsupported path: \"%s\"", p_sys->url.psz_path );
+ goto error;
}
/* check binary mode support */
if( ftp_SendCommand( p_access, p_sys, "TYPE I" ) < 0 ||
- ftp_ReadCommand( p_access, p_sys, NULL, NULL ) != 2 )
+ ftp_RecvCommand( p_access, p_sys, NULL, NULL ) != 2 )
{
msg_Err( p_access, "cannot set binary transfer mode" );
- net_Close( p_sys->fd_cmd );
- return -1;
+ goto error;
}
return 0;
+error:
+ net_Close( p_sys->fd_cmd );
+ return -1;
}
return VLC_EGENERIC; /* ASCII and directory not supported */
}
decode_URI( url->psz_path );
- /* FIXME: check for UTF-8 support, otherwise only ASCII is allowed */
- EnsureUTF8( url->psz_path );
return VLC_SUCCESS;
}
if( ftp_SendCommand( p_this, p_sys, "SIZE %s", p_sys->url.psz_path ) < 0 )
goto error;
else
- if ( ftp_ReadCommand( p_this, p_sys, NULL, &psz_arg ) == 2 )
+ if ( ftp_RecvCommand( p_this, p_sys, NULL, &psz_arg ) == 2 )
{
p_access->info.i_size = atoll( &psz_arg[4] );
free( psz_arg );
if( ftp_SendCommand( p_this, p_sys, "CWD %s", p_sys->url.psz_path ) < 0 )
goto error;
else
- if( ftp_ReadCommand( p_this, p_sys, NULL, NULL ) != 2 )
+ if( ftp_RecvCommand( p_this, p_sys, NULL, NULL ) != 2 )
{
msg_Err( p_access, "file or directory does not exist" );
goto error;
}
else
{
- ftp_ReadCommand( p_access, p_sys, NULL, NULL );
+ ftp_RecvCommand( p_access, p_sys, NULL, NULL );
}
net_Close( p_sys->fd_cmd );
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( 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,
uint64_t i_start )
{
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 ) )
+ || ( ftp_RecvCommand( p_access, p_sys, &i_answer, &psz_arg ) != 2 ) )
{
msg_Err( p_access, "cannot set passive mode" );
return VLC_EGENERIC;
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 )
+ 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, p_sys, "REST %"PRIu64, i_start ) < 0 ||
- ftp_ReadCommand( p_access, p_sys, &i_answer, NULL ) > 3 )
+ ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) > 3 )
{
msg_Err( p_access, "cannot set restart offset" );
return VLC_EGENERIC;
if( p_sys->directory )
{
if( ftp_SendCommand( p_access, p_sys, "NLST" ) < 0 ||
- ftp_ReadCommand( p_access, p_sys, NULL, &psz_arg ) > 2 )
+ ftp_RecvCommand( p_access, p_sys, NULL, &psz_arg ) > 2 )
{
msg_Err( p_access, "cannot list directory contents" );
return VLC_EGENERIC;
if( ftp_SendCommand( p_access, p_sys, "%s %s",
p_sys->out ? "STOR" : "RETR",
p_sys->url.psz_path ) < 0
- || ftp_ReadCommand( p_access, p_sys, &i_answer, NULL ) > 2 )
+ || ftp_RecvCommand( p_access, p_sys, &i_answer, NULL ) > 2 )
{
msg_Err( p_access, "cannot retrieve file" );
return VLC_EGENERIC;
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 );
+ ftp_RecvCommand( p_access, p_sys, NULL, NULL );
}
/* Read the response from ABOR, i.e. 226 or 225 */
- ftp_ReadCommand( p_access, p_sys, NULL, NULL );
+ ftp_RecvCommand( p_access, p_sys, NULL, NULL );
return VLC_SUCCESS;
}
projects / vlc / blobdiff