/*

    File: ftpproxy/ftp.h

    Copyright (C) 1999  Wolfgang Zekoll  <wzk@quietsche-entchen.de>
    Copyright (C) 2000, 2003  Andreas Schoenberg  <asg@ftpproxy.org>
  
    This software 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., 675 Mass Ave, Cambridge, MA 02139, USA.

 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#ifndef	_FTP_INCLUDED
#define	_FTP_INCLUDED

extern char *version;

extern char *program;
extern char progname[80];

extern int debug;
extern int extralog;
extern int bindport;
extern int daemonmode;

extern int acceptloop(int sock);

#define	FTPMAXBSIZE		4096


typedef struct _config {
    char	configfile[200];

    int		standalone;
    int		timeout;

    int		selectserver;
    int		allow_anyremote;

    char	server[200];
    char	*serverlist;

    char	acp[200];
    char	ccp[200];
    char	ctp[200];
    char	varname[80];

    int		allow_blanks;
    int		allow_passwdblanks;
    int		use_last_at;
    int		monitor;
    int		bsize;
    char	xferlog[200];

    int		numeric_only;
    char	sourceip[200];
    unsigned int dataport;
    } config_t;


#define	DIR_MAXDEPTH		15


#define	CCP_OK			0
#define	CCP_ERROR		1


#define	PORT_LISTEN		1
#define	PORT_CONNECTED		2
#define	PORT_CLOSED		3

#define	MODE_PORT		1
#define	MODE_PASSIVE		2

#define	OP_GET			1
#define	OP_PUT			2

#define	TYPE_ASC		1	/* Transfer modes for xferlog */
#define	TYPE_BIN		2

typedef struct _port {
    char	ipnum[80];
    unsigned int port;
    } port_t;

typedef struct _dtc {
    int		state;		/* LISTEN, CONNECTED, CLOSED */
    int		seen150;
    
    int		isock;
    int		osock;
    
    int		operation;	/* GET oder PUT */
    int		active;
    int		other;
    
    int		mode;		/* PORT oder PASV */
    port_t	server;
    port_t	outside;
    port_t	inside;
    port_t	client;

    int		type;		/* Transfer type for xferlog */
    unsigned long started;	/* Timestamp for xferlog */

    char	command[20];	/* Fuer syslog Meldungen */
    char	filename[200];
    unsigned long bytes;
    } dtc_t;


typedef struct _bio {
    int		here, len;
    char	buffer[512];
    } bio_t;


typedef struct _ftp {
    config_t	*config;
    
    char	interface[80];
    unsigned int port;

    char	client[200];
    char	client_ip[80];

    char	username[200];
    char	password[200];

    struct {
	char	username[80];
	char	password[80];
	} local;

    struct {
	char	name[80];
	unsigned int port;

	char	ipnum[80];
	} server;

    struct {
	int		server;		/* Kontrollverbindung zum Server */

	int		cfd;		/* Datenverbindung zum Client */
	int		sfd;		/* Datenverbindung zum Server */

	fd_set		fdset;
	int		max;
	} fd;

    dtc_t		ch;
    char		cwd[200];
    char		home[200];
    char		filepath[200];

    bio_t		cbuf, sbuf;
    
    char		session[80];
    int			ccpcoll;
 
    FILE		*xlfp;
    char		logusername[100];

    int			commands;
    unsigned long datain, dataout;
    } ftp_t;


extern int readconfig(config_t *config, char *filename, char *section);
extern int printconfig(config_t *config);

extern int proxy_request(config_t *config);

#endif