/*
 *
 *	RADIUS
 *	Remote Authentication Dial In User Service
 *
 *
 *	Livingston Enterprises, Inc.
 *	6920 Koll Center Parkway
 *	Pleasanton, CA   94566
 *
 *	Copyright 1992 Livingston Enterprises, Inc.
 *
 *	Permission to use, copy, modify, and distribute this software for any
 *	purpose and without fee is hereby granted, provided that this
 *	copyright and permission notice appear on all copies and supporting
 *	documentation, the name of Livingston Enterprises, Inc. not be used
 *	in advertising or publicity pertaining to distribution of the
 *	program without specific prior permission, and notice be given
 *	in supporting documentation that copying and distribution is by
 *	permission of Livingston Enterprises, Inc.   
 *
 *	Livingston Enterprises, Inc. makes no representations about
 *	the suitability of this software for any purpose.  It is
 *	provided "as is" without express or implied warranty.
 *
 */

static char sccsid[] =
"@(#)dict.c	1.5 Copyright 1992 Livingston Enterprises Inc";

#include	<stdio.h>
#include	<sys/types.h>
#include	<pwd.h>
#include	<ctype.h>

#include	"radius.h"

extern char		*progname;
extern int		debug_flag;
extern char		*radius_dir;

static DICT_ATTR	*dictionary_attributes;
static DICT_VALUE	*dictionary_values;

/*************************************************************************
 *
 *	Function: dict_init
 *
 *	Purpose: Initialize the dictionary.  Read all ATTRIBUTES into
 *		 the dictionary_attributes list.  Read all VALUES into
 *		 the dictionary_values list.
 *
 *************************************************************************/

int
dict_init()
{
	FILE	*dictfd;
	char	dummystr[64];
	char	namestr[64];
	char	valstr[64];
	char	attrstr[64];
	char	typestr[64];
	int	line_no;
	DICT_ATTR	*attr;
	DICT_VALUE	*dval;
	char	buffer[256];
	int	value;
	int	type;

	sprintf(buffer, "%s/%s", radius_dir, RADIUS_DICTIONARY);
	if((dictfd = fopen(buffer, "r")) == (FILE *)NULL) {
		fprintf (stderr, "%s: Couldn't open dictionary: %s\n",
			progname, buffer);
		return(-1);
	}

	line_no = 0;
	while(fgets(buffer, sizeof(buffer), dictfd) != (char *)NULL) {
		line_no++;
		
		/* Skip empty space */
		if(*buffer == '#' || *buffer == '\0' || *buffer == '\n') {
			continue;
		}

		if(strncmp(buffer, "ATTRIBUTE", 9) == 0) {

			/* Read the ATTRIBUTE line */
			if(sscanf(buffer, "%s%s%s%s", dummystr, namestr,
					valstr, typestr) != 4) {
				fprintf(stderr,
			"%s: Invalid attribute on line %d of dictionary\n",
					progname, line_no);
				return(-1);
			}

			/*
			 * Validate all entries
			 */
			if(strlen(namestr) > 31) {
				fprintf(stderr,
			"%s: Invalid name length on line %d of dictionary\n",
					progname, line_no);
				return(-1);
			}

			if(!isdigit(*valstr)) {
				fprintf(stderr,
			"%s: Invalid value on line %d of dictionary\n",
					progname, line_no);
				return(-1);
			}
			value = atoi(valstr);

			if(strcmp(typestr, "string") == 0) {
				type = PW_TYPE_STRING;
			}
			else if(strcmp(typestr, "integer") == 0) {
				type = PW_TYPE_INTEGER;
			}
			else if(strcmp(typestr, "ipaddr") == 0) {
				type = PW_TYPE_IPADDR;
			}
			else if(strcmp(typestr, "date") == 0) {
				type = PW_TYPE_DATE;
			}
			else {
				fprintf(stderr,
			"%s: Invalid type on line %d of dictionary\n",
					progname, line_no);
				return(-1);
			}

			/* Create a new attribute for the list */
			if((attr = (DICT_ATTR *)malloc(sizeof(DICT_ATTR))) ==
					(DICT_ATTR *)NULL) {
				fprintf(stderr, "%s: out of memory\n",
							progname);
				return(-1);
			}
			strcpy(attr->name, namestr);
			attr->value = value;
			attr->type = type;

			/* Insert it into the list */
			attr->next = dictionary_attributes;
			dictionary_attributes = attr;
		}
		else if(strncmp(buffer, "VALUE", 5) == 0) {

			/* Read the VALUE line */
			if(sscanf(buffer, "%s%s%s%s", dummystr, attrstr,
						namestr, valstr) != 4) {
				fprintf(stderr,
			"%s: Invalid value entry on line %d of dictionary\n",
					progname, line_no);
				return(-1);
			}

			/*
			 * Validate all entries
			 */
			if(strlen(attrstr) > 31) {
				fprintf(stderr,
			"%s: Invalid attribute length on line %d of dictionary\n",
					progname, line_no);
				return(-1);
			}

			if(strlen(namestr) > 31) {
				fprintf(stderr,
			"%s: Invalid name length on line %d of dictionary\n",
					progname, line_no);
				return(-1);
			}

			if(!isdigit(*valstr)) {
				fprintf(stderr,
			"%s: Invalid value on line %d of dictionary\n",
					progname, line_no);
				return(-1);
			}
			value = atoi(valstr);

			/* Create a new VALUE entry for the list */
			if((dval = (DICT_VALUE *)malloc(sizeof(DICT_VALUE))) ==
					(DICT_VALUE *)NULL) {
				fprintf(stderr, "%s: out of memory\n",
							progname);
				return(-1);
			}
			strcpy(dval->attrname, attrstr);
			strcpy(dval->name, namestr);
			dval->value = value;

			/* Insert it into the list */
			dval->next = dictionary_values;
			dictionary_values = dval;
		}
	}
	fclose(dictfd);
	return(0);
}

/*************************************************************************
 *
 *	Function: dict_attrget
 *
 *	Purpose: Return the full attribute structure based on the
 *		 attribute id number.
 *
 *************************************************************************/

DICT_ATTR	*
dict_attrget(attribute)
int	attribute;
{
	DICT_ATTR	*attr;

	attr = dictionary_attributes;
	while(attr != (DICT_ATTR *)NULL) {
		if(attr->value == attribute) {
			return(attr);
		}
		attr = attr->next;
	}
	return((DICT_ATTR *)NULL);
}

/*************************************************************************
 *
 *	Function: dict_attrfind
 *
 *	Purpose: Return the full attribute structure based on the
 *		 attribute name.
 *
 *************************************************************************/

DICT_ATTR	*
dict_attrfind(attrname)
char	*attrname;
{
	DICT_ATTR	*attr;

	attr = dictionary_attributes;
	while(attr != (DICT_ATTR *)NULL) {
		if(strcmp(attr->name, attrname) == 0) {
			return(attr);
		}
		attr = attr->next;
	}
	return((DICT_ATTR *)NULL);
}

/*************************************************************************
 *
 *	Function: dict_valfind
 *
 *	Purpose: Return the full value structure based on the
 *		 value name.
 *
 *************************************************************************/

DICT_VALUE	*
dict_valfind(valname)
char	*valname;
{
	DICT_VALUE	*val;

	val = dictionary_values;
	while(val != (DICT_VALUE *)NULL) {
		if(strcmp(val->name, valname) == 0) {
			return(val);
		}
		val = val->next;
	}
	return((DICT_VALUE *)NULL);
}

/*************************************************************************
 *
 *	Function: dict_valget
 *
 *	Purpose: Return the full value structure based on the
 *		 actual value and the associated attribute name.
 *
 *************************************************************************/

DICT_VALUE	*
dict_valget(value, attrname)
UINT4	value;
char	*attrname;
{
	DICT_VALUE	*val;

	val = dictionary_values;
	while(val != (DICT_VALUE *)NULL) {
		if(strcmp(val->attrname, attrname) == 0 &&
						val->value == value) {
			return(val);
		}
		val = val->next;
	}
	return((DICT_VALUE *)NULL);
}