/*
 *  Empire - A multi-player, client/server Internet based war game.
 *  Copyright (C) 1986-2021, Dave Pare, Jeff Bailey, Thomas Ruschak,
 *                Ken Stevens, Steve McClure, Markus Armbruster
 *
 *  Empire 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 *  ---
 *
 *  See files README, COPYING and CREDITS in the root of the source
 *  tree for related information and legal notices.  It is expected
 *  that future projects/authors will amend these files as needed.
 *
 *  ---
 *
 *  tel.h: Definitions for things having to do with telegrams
 *
 *  Known contributors to this file:
 *     Markus Armbruster, 2009-2011
 */

#ifndef TEL_H
#define TEL_H

#include <stdio.h>
#include <time.h>
#include "types.h"

#define MAXTELSIZE	1024	/* doesn't apply to TEL_UPDATE */

#define TEL_NORM	0	/* normal */
#define TEL_ANNOUNCE	1	/* announcement */
#define TEL_BULLETIN	2	/* bulletin */
#define TEL_UPDATE	3	/* update message */
#define TEL_LAST	3

#define TEL_SECONDS 5		/* how many seconds before starting a new telegram */

struct telstr {
    natid tel_from;		/* sender */
    unsigned char tel_type;
    signed char tel_cont;	/* squash into prev. telegram? */
    unsigned tel_length;	/* how long */
    time_t tel_date;		/* when sent */
};

extern char *mailbox(char *buf, natid cn);
extern int mailbox_create(char *);
extern int tel_read_header(FILE *, char *, struct telstr *);
extern int tel_read_body(FILE *, char *, struct telstr *,
			 int (*sink)(char *, size_t, void *),
			 void *);

#endif
