/*    File: ftpproxy/config.c     Copyright (C) 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. */#include <stdlib.h>#include <stdio.h>#include <string.h>#include <unistd.h>#include <stdarg.h>#include <ctype.h>#include <errno.h>#include <signal.h>#include <sys/wait.h>#include <pwd.h>#include <sys/types.h>#include <sys/stat.h>#include <sys/fcntl.h>#include <sys/socket.h>#include <netdb.h>#include <netinet/in.h>#include <arpa/inet.h>#include <syslog.h>#include <sys/time.h>#include "ftp.h"#include "lib.h"static int get_yesno(char **from, char *par, char *filename, int lineno){	char	word[80];	if (**from == 0) {		fprintf (stderr, "%s: missing parameter: %s, %s:%d\n", program, par, filename, lineno);		exit (1);		}	get_word(from, word, sizeof(word));	if (strcmp(word, "yes") == 0)		return (1);	else if (strcmp(word, "no") == 0)		return (0);	fprintf (stderr, "%s: bad parameter value: %s, parameter= %s, %s:%d\n", program, word, par, filename, lineno);	exit (1);		return (0);}static char *get_parameter(char **from, char *par, char *value, int size,		char *filename, int lineno){	if (**from == 0) {		fprintf (stderr, "%s: missing parameter: %s, %s:%d\n", program, par, filename, lineno);		exit (1);		}	copy_string(value, *from, size);	if (strcmp(value, "-") == 0)		*value = 0;	return (value);}static unsigned int get_number(char **from, char *par, char *filename, int lineno){	char	word[20];	unsigned int val;	get_parameter(from, par, word, sizeof(word), filename, lineno);	val = strtoul(word, NULL, 0);	return (val);}int readconfig(config_t *config, char *filename, char *section){	int	lineno, insection, havesection, sectioncount;	char	*p, word[80], line[300], sectname[80];	FILE	*fp;	if ((fp = fopen(filename, "r")) == NULL) {		fprintf (stderr, "%s: can't open configuration file: %s\n", program, filename);		exit (1);		}	sectioncount = 0;	if (*section == 0) {		insection = 1;		havesection = 1;		}	else {		snprintf (sectname, sizeof(sectname) - 2, "[%s]", section);		insection = 0;		havesection = 0;		}	lineno = 0;	while (fgets(line, sizeof(line), fp) != NULL) {		lineno++;		if ((p = strchr(line, '#')) != NULL)			*p = 0;		if (*line == '[') {			sectioncount++;			if (*section == 0)				break;			p = line;			get_word(&p, word, sizeof(word));			if (strcmp(word, sectname) != 0)				insection = 0;			else {				insection = 1;				havesection = 1;				}			continue;			}		if (insection == 0)			continue;		p = skip_ws(noctrl(line));		if (*p == 0)			continue;		get_word(&p, word, sizeof(word));		strlwr(word);		p = skip_ws(p);		if (strcmp(word, "debug") == 0)			debug = get_yesno(&p, word, filename, lineno);				else if (strcmp(word, "acp") == 0)			get_parameter(&p, word, config->acp, sizeof(config->acp), filename, lineno);		else if (strcmp(word, "ccp") == 0)			get_parameter(&p, word, config->ccp, sizeof(config->ccp), filename, lineno);		else if (strcmp(word, "ctp") == 0)			get_parameter(&p, word, config->ctp, sizeof(config->ctp), filename, lineno);		else if (strcmp(word, "allow-anyremote") == 0)			config->allow_anyremote = get_yesno(&p, word, filename, lineno);		else if (strcmp(word, "allow-blanks") == 0)			config->allow_blanks = get_yesno(&p, word, filename, lineno);		else if (strcmp(word, "allow-passwdblanks") == 0)			config->allow_passwdblanks = get_yesno(&p, word, filename, lineno);		else if (strcmp(word, "extra-logging") == 0)			extralog = get_yesno(&p, word, filename, lineno);		else if (strcmp(word, "monitormode") == 0)			config->monitor = get_yesno(&p, word, filename, lineno);		else if (strcmp(word, "proxy-routing") == 0)			config->use_last_at = get_yesno(&p, word, filename, lineno);		else if (strcmp(word, "selectserver") == 0) {			config->selectserver = get_yesno(&p, word, filename, lineno);			*config->server = 0;			}		else if (strcmp(word, "server") == 0) {			get_parameter(&p, word, config->server, sizeof(config->server), filename, lineno);			config->selectserver = 0;			}		else if (strcmp(word, "serverlist") == 0)			config->serverlist = strdup(skip_ws(p));		else if (strcmp(word, "sourceip") == 0)			get_parameter(&p, word, config->sourceip, sizeof(config->sourceip), filename, lineno);		else if (strcmp(word, "bind") == 0) {			bindport = get_number(&p, word, filename, lineno);			daemonmode = 1;			}		else if (strcmp(word, "timeout") == 0) {			config->timeout = get_number(&p, word, filename, lineno);			if (config->timeout < 60)				config->timeout = 60;			}		else if (strcmp(word, "xferlog") == 0)			get_parameter(&p, word, config->xferlog, sizeof(config->xferlog), filename, lineno);		else {			fprintf (stderr, "%s: unknown parameter: %s, %s:%d\n", program, word, filename, lineno);			exit (1);			}		}			fclose (fp);	if (*section != 0  &&  sectioncount == 0)		havesection = 1;	return (havesection);}#define	printyesno(x, y)	(y != 0? printf ("%s: %s\n", x, (y == 0)? "no": "yes"): 0)#define printnum(x, y)		((y > 0)? printf ("%s: %u\n", x, y): 0)#define	printstring(x, y)	((y != NULL  &&  *y != 0)? printf("%s: %s\n", x, y): 0)int printconfig(config_t *config){	printf ("debug: %s\n", (debug == 0)? "no": "yes");	printstring ("acp", config->acp);	printyesno ("allow-anyremote", config->allow_anyremote);	printyesno ("allow-blanks", config->allow_blanks);	printyesno ("allow-passwdblanks", config->allow_passwdblanks);	printnum ("bind", bindport);	printstring ("ccp", config->ccp);	printstring ("ctp", config->ctp);	printyesno ("extra-logging", extralog);	printyesno ("monitormode", config->monitor);	printyesno ("proxy-routing", config->use_last_at);	printf ("selectserver: %s\n", (config->selectserver == 0)? "no": "yes");	printstring ("server", config->server);	printstring ("serverlist", config->serverlist);	printnum ("timeout", config->timeout);	return (0);}