/* config file parser functions
 * (C) 2000 by Harald Welte <laforge@gnumonks.org>
 *
 * $Id: conffile.h,v 1.4 2000/09/09 21:55:46 laforge Exp $
 * 
 * This code is distributed under the terms of GNU GPL */

#ifndef _CONFFILE_H
#define _CONFFILE_H

#include <sys/types.h>

/* errors returned by config functions */
enum {
	ERRNONE = 0,
	ERROPEN,	/* unable to open config file */
	ERROOM,		/* out of memory */
	ERRMULT,	/* non-multiple option occured more  than once */
	ERRMAND,	/* mandatory option not found */
	ERRUNKN,	/* unknown config key */
};

/* maximum line lenght of config file entries */
#define LINE_LEN 		255

/* maximum lenght of config key name */
#define CONFIG_KEY_LEN		30

/* maximum lenght of string config value */
#define CONFIG_VAL_STRING_LEN	225

/* valid config types */
#define CONFIG_TYPE_INT		0x0001
#define CONFIG_TYPE_STRING	0x0002
#define CONFIG_TYPE_CALLBACK	0x0003

/* valid config options */
#define CONFIG_OPT_NONE		0x0000
#define CONFIG_OPT_MANDATORY	0x0001
#define CONFIG_OPT_MULTI	0x0002

typedef struct config_entry {
	struct config_entry *next;
	char key[CONFIG_KEY_LEN];
	u_int8_t type;
	u_int8_t options;
	u_int8_t hit;
	union {
		char string[CONFIG_VAL_STRING_LEN];
		int value;
		int (*parser)(char *argstr);
	} u;
} config_entry_t;

/* if an error occurs, config_errce is set to the erroneous ce */
config_entry_t *config_errce;

/* tell us the name of the config file */
int config_register_file(const char *file);

/* parse the config file , presume all config keys are registered
 * if final==1 	*/
int config_parse_file(int final);

/* register a linked list of config entries */
int config_register_key(config_entry_t *ce);

#endif /* ifndef _CONFFILE_H */