/* $Id: asn1_address.c,v 1.5 2006/01/15 15:08:55 keil Exp $
 *
 * ISDN accounting for isdn4linux. (ASN.1 parser)
 *
 * Copyright 1995 .. 2000 by Andreas Kool (akool@isdn4linux.de)
 *
 * ASN.1 parser written by Kai Germaschewski <kai@thphy.uni-duesseldorf.de>
 *
 * 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, 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.
 *
 * $Log: asn1_address.c,v $
 * Revision 1.5  2006/01/15 15:08:55  keil
 * fix some issues with newer gcc (mostly aliasing)
 *
 * Revision 1.4  2000/01/20 07:30:09  kai
 * rewrote the ASN.1 parsing stuff. No known problems so far, apart from the
 * following:
 *
 * I don't use buildnumber() anymore to translate the numbers to aliases, because
 * it apparently did never work quite right. If someone knows how to handle
 * buildnumber(), we can go ahead and fix this.
 *
 * Revision 1.3  1999/12/31 13:30:01  akool
 * isdnlog-4.00 (Millenium-Edition)
 *  - Oracle support added by Jan Bolt (Jan.Bolt@t-online.de)
 *
 * Revision 1.2  1999/04/26 22:11:52  akool
 * isdnlog Version 3.21
 *
 *  - CVS headers added to the asn* files
 *  - repaired the "4.CI" message directly on CONNECT
 *  - HANGUP message extended (CI's and EH's shown)
 *  - reactivated the OVERLOAD message
 *  - rate-at.dat extended
 *  - fixes from Michael Reinelt
 *
 *
 * Revision 0.1  1999/04/25 20:00.00  akool
 * Initial revision
 *
 */

#include "asn1.h"
#include "asn1_generic.h"
#include "asn1_address.h"

void buildnumber(char *num, int oc3, int oc3a, char *result, int version,
		 int *provider, int *sondernummer, int *intern, int *local,
		 int dir, int who);


// ======================================================================
// Address Types EN 300 196-1 D.3

int ParsePresentationRestricted(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	int ret;

	ret = ParseNull(chanp, p, end, -1);
	if (ret < 0)
		return ret;
	strcpy(str, "(presentation restricted)");
	return ret;
}

int ParseNotAvailInterworking(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	int ret;

	ret = ParseNull(chanp, p, end, -1);
	if (ret < 0)
		return ret;
	strcpy(str, "(not available)");
	return ret;
}

int ParsePresentedAddressScreened(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	INIT;

	XCHOICE_1(ParseAddressScreened, ASN1_TAG_SEQUENCE, 0, str);
	XCHOICE_1(ParsePresentationRestricted, ASN1_TAG_NULL, 1, str);
	XCHOICE_1(ParseNotAvailInterworking, ASN1_TAG_NULL, 2, str);
	XCHOICE_1(ParseAddressScreened, ASN1_TAG_NULL, 3, str);
	XCHOICE_DEFAULT;
}

int ParsePresentedNumberScreened(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	INIT;

	XCHOICE_1(ParseNumberScreened, ASN1_TAG_SEQUENCE, 0, str);
	XCHOICE_1(ParsePresentationRestricted, ASN1_TAG_NULL, 1, str);
	XCHOICE_1(ParseNotAvailInterworking, ASN1_TAG_NULL, 2, str);
	XCHOICE_1(ParseNumberScreened, ASN1_TAG_NULL, 3, str);
	XCHOICE_DEFAULT;
}

int ParsePresentedNumberUnscreened(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	INIT;

	XCHOICE_1(ParsePartyNumber, ASN1_TAG_SEQUENCE, 0, str); // FIXME EXP
	XCHOICE_1(ParsePresentationRestricted, ASN1_TAG_NULL, 1, str);
	XCHOICE_1(ParseNotAvailInterworking, ASN1_TAG_NULL, 2, str);
	XCHOICE_1(ParsePartyNumber, ASN1_TAG_SEQUENCE, 3, str); // FIXME EXP
	XCHOICE_DEFAULT;
}

int ParseNumberScreened(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	char partyNumber[30];
	char screeningIndicator[30];
	INIT;

	XSEQUENCE_1(ParsePartyNumber, ASN1_NOT_TAGGED, ASN1_NOT_TAGGED, partyNumber);
	XSEQUENCE_1(ParseScreeningIndicator, ASN1_NOT_TAGGED, ASN1_NOT_TAGGED, screeningIndicator);

	str += sprintf(str, "%s", partyNumber);

	return p - beg;
}

int ParseAddressScreened(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	char partyNumber[30];
	char partySubaddress[30] = "";
	char screeningIndicator[30];
	INIT;

	XSEQUENCE_1(ParsePartyNumber, ASN1_NOT_TAGGED, ASN1_NOT_TAGGED, partyNumber);
	XSEQUENCE_1(ParseScreeningIndicator, ASN1_NOT_TAGGED, ASN1_NOT_TAGGED, screeningIndicator);
	XSEQUENCE_OPT_1(ParsePartySubaddress, ASN1_NOT_TAGGED, ASN1_NOT_TAGGED, partySubaddress);

	str += sprintf(str, "%s", partyNumber);
	if (strlen(partySubaddress))
		str += sprintf(str, ".%s", partySubaddress);

	return p - beg;
}

int ParseAddress(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	char partyNumber[30];
	char partySubaddress[30] = "";
	INIT;

	XSEQUENCE_1(ParsePartyNumber, ASN1_NOT_TAGGED, ASN1_NOT_TAGGED, partyNumber);
	XSEQUENCE_OPT_1(ParsePartySubaddress, ASN1_NOT_TAGGED, ASN1_NOT_TAGGED, partySubaddress);

	str += sprintf(str, partyNumber);
	if (strlen(partySubaddress))
		str += sprintf(str, ".%s", partySubaddress);

	return p - beg;
}

int ParsePartyNumber(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	INIT;

	XCHOICE_1(ParseNumberDigits, ASN1_TAG_NUMERIC_STRING, 0, str); // unknownPartyNumber
	XCHOICE_1(ParsePublicPartyNumber, ASN1_TAG_SEQUENCE, 1, str); 
	XCHOICE_1(ParseNumberDigits, ASN1_TAG_NUMERIC_STRING, 3, str); // dataPartyNumber
	XCHOICE_1(ParseNumberDigits, ASN1_TAG_NUMERIC_STRING, 4, str); // telexPartyNumber
	XCHOICE_1(ParsePrivatePartyNumber, ASN1_TAG_SEQUENCE, 5, str);
	XCHOICE_1(ParseNumberDigits, ASN1_TAG_NUMERIC_STRING, 8, str); // nationalStandardPartyNumber
	XCHOICE_DEFAULT;
}

int ParsePublicPartyNumber(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	int publicTypeOfNumber;
	char numberDigits[20];
	INIT;

	XSEQUENCE_1(ParsePublicTypeOfNumber, ASN1_TAG_ENUM, ASN1_NOT_TAGGED, &publicTypeOfNumber);
	XSEQUENCE_1(ParseNumberDigits, ASN1_TAG_NUMERIC_STRING, ASN1_NOT_TAGGED, numberDigits);
	
	switch (publicTypeOfNumber) {
	case 0: break; // unknown
	case 1: str += sprintf(str, countryprefix); break;
	case 2: str += sprintf(str, areaprefix); break;
	case 3: str += sprintf(str, "(network)"); break;
	case 4: str += sprintf(str, "(MSN)"); break;
	case 6: str += sprintf(str, "(abbrev)"); break;
	}
	str += sprintf(str, numberDigits);

	return p - beg;
}

int ParsePrivatePartyNumber(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	int privateTypeOfNumber = -1;
	char numberDigits[20];
	INIT;

	XSEQUENCE_1(ParsePrivateTypeOfNumber, ASN1_TAG_ENUM, ASN1_NOT_TAGGED, privateTypeOfNumber); 
	XSEQUENCE_1(ParseNumberDigits, ASN1_TAG_NUMERIC_STRING, ASN1_NOT_TAGGED, numberDigits); 

	switch (privateTypeOfNumber) {
	case 0: str += sprintf(str, "(unknown)"); break;
	case 1: str += sprintf(str, "(regional2)"); break;
	case 2: str += sprintf(str, "(regional1)"); break;
	case 3: str += sprintf(str, "(ptn)"); break;
	case 4: str += sprintf(str, "(local)"); break;
	case 6: str += sprintf(str, "(abbrev)"); break;
	}
	str += sprintf(str, numberDigits);

	return p - beg;
}

int ParsePublicTypeOfNumber(struct Aoc *chanp, u_char *p, u_char *end, int *publicTypeOfNumber)
{
	return ParseEnum(chanp, p, end, publicTypeOfNumber);
}

int ParsePrivateTypeOfNumber(struct Aoc *chanp, u_char *p, u_char *end, int dummy)
{
	int typeOfNumber;

	return ParseEnum(chanp, p, end, &typeOfNumber);
}

int ParsePartySubaddress(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	INIT;

	XCHOICE_1(ParseUserSpecifiedSubaddress, ASN1_TAG_SEQUENCE, ASN1_NOT_TAGGED, str);
	XCHOICE_1(ParseNSAPSubaddress, ASN1_TAG_OCTET_STRING, ASN1_NOT_TAGGED, str);
	XCHOICE_DEFAULT;
}

int ParseUserSpecifiedSubaddress(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	int oddCountIndicator;
	INIT;

	XSEQUENCE_1(ParseSubaddressInformation, ASN1_TAG_OCTET_STRING, ASN1_NOT_TAGGED, str);
	XSEQUENCE_OPT_1(ParseBoolean, ASN1_TAG_BOOLEAN, ASN1_NOT_TAGGED, &oddCountIndicator);
	
	return p - beg;
}

int ParseNSAPSubaddress(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	return ParseOctetString(chanp, p, end, str);
}

int ParseSubaddressInformation(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	return ParseOctetString(chanp, p, end, str);
}

int ParseScreeningIndicator(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	int ret;
	int screeningIndicator;

	ret = ParseEnum(chanp, p, end, &screeningIndicator);
	if (ret < 0)
		return ret;
	
	switch (screeningIndicator) {
	case 0: sprintf(str, "user provided, not screened"); break;
	case 1: sprintf(str, "user provided, passed"); break;
	case 2: sprintf(str, "user provided, failed"); break;
	case 3: sprintf(str, "network provided"); break;
	default: sprintf(str, "(%d)", screeningIndicator); break;
	}

	return ret;
}

int ParseNumberDigits(struct Aoc *chanp, u_char *p, u_char *end, char *str)
{
	return ParseNumericString(chanp, p, end, str);
}