Import of Empire 4.2.12
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src/lib/subs/wu.c
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src/lib/subs/wu.c
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/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ---
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*
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* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
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* related information and legal notices. It is expected that any future
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* projects/authors will amend these files as needed.
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*
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* ---
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*
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* wu.c: Write a telegram to a user from another
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*
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* Known contributors to this file:
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* Steve McClure, 2000
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*
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*/
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#include <stdarg.h>
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#include "misc.h"
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#include <fcntl.h>
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#if !defined(_WIN32)
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#include <sys/uio.h>
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#endif
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#include "nat.h"
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#include "tel.h"
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#include "file.h"
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#include "player.h"
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#include "prototypes.h"
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static struct telstr last_tel[MAXNOC];
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void
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clear_telegram_is_new(natid to)
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{
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last_tel[to].tel_type = 0;
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last_tel[to].tel_from = 0;
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last_tel[to].tel_date = 0;
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}
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/*
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* telegram_is_new counts new telegrams the same as read_telegrams in
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* lib/commands/mail.c and lib/commands/rea.c
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*/
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static int
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telegram_is_new (natid to, struct telstr *tel)
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{
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extern int update_pending;
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int is_new = 0;
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is_new |= tel->tel_type != last_tel[to].tel_type;
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is_new |= tel->tel_from != last_tel[to].tel_from;
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is_new |= !update_pending && /* sometimes updates take a long time */
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abs (tel->tel_date - last_tel[to].tel_date) > TEL_SECONDS;
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last_tel[to].tel_type = tel->tel_type;
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last_tel[to].tel_from = tel->tel_from;
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last_tel[to].tel_date = tel->tel_date;
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return is_new;
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}
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/*VARARGS*/
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int
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wu(natid from, natid to, s_char *format, ...)
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{
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struct natstr *np;
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va_list ap;
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s_char buf[4096];
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extern int update_pending;
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va_start(ap, format);
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(void) vsprintf(buf, format, ap);
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va_end(ap);
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np = getnatp(from);
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if (update_pending)
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return typed_wu(from, to, buf, TEL_UPDATE);
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else if (np->nat_stat & STAT_GOD)
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return typed_wu(from, to, buf, TEL_BULLETIN);
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else
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return typed_wu(from, to, buf, TEL_NORM);
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}
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int
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typed_wu(natid from, natid to, s_char *message, int type)
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{
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register s_char *bp;
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int len;
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struct telstr tel;
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struct natstr *np;
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#if !defined(_WIN32)
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struct iovec iov[2];
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#endif
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int fd;
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s_char box[1024];
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int notify = 0;
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int new_tele = 0;
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struct player *other;
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if (type == TEL_ANNOUNCE)
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strcpy(box, annfil);
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else
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mailbox(box, to);
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if (type != TEL_ANNOUNCE)
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if ((np = getnatp(to)) == 0 ||
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((np->nat_stat & STAT_NORM) == 0 &&
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(np->nat_stat & STAT_SANCT) == 0)) {
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return -1;
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}
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#if !defined(_WIN32)
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if ((fd = open(box, O_WRONLY|O_APPEND, 0)) < 0) {
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#else
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if ((fd = open(box, O_WRONLY|O_APPEND|O_BINARY, 0)) < 0) {
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#endif
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logerror("telegram 'open' of %s (#%d) failed", box, to);
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return -1;
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}
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tel.tel_from = from;
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(void) time(&tel.tel_date);
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bp = message;
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while (*bp++)
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;
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len = bp - message;
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if (len >= MAXTELSIZE)
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len = (MAXTELSIZE - 1);
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message[len] = 0;
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tel.tel_length = len;
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tel.tel_type = type;
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#if !defined(_WIN32)
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iov[0].iov_base = (caddr_t) &tel;
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iov[0].iov_len = sizeof(tel);
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iov[1].iov_base = message;
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iov[1].iov_len = len;
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if (writev(fd, iov, 2) < (int)(iov[0].iov_len + iov[1].iov_len)) {
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#else
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if ((write(fd, &tel, sizeof(tel)) != sizeof(tel)) ||
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(write(fd, message, len) != len)) {
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#endif
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logerror("telegram 'write' to #%d failed", to);
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} else if (type == TEL_ANNOUNCE) {
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for (to=0; NULL != (np = getnatp(to)); to++) {
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if (!(np->nat_stat & STAT_NORM) &&
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!(np->nat_stat & STAT_SANCT))
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continue;
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if (!player->god && (getrejects(from,np) & REJ_ANNO))
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continue;
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notify = (np->nat_ann == 0);
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np->nat_ann++;
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putnat(np);
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if (notify)
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player_wakeup_all(to);
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}
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} else {
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notify = (np->nat_tgms == 0);
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new_tele = telegram_is_new(to, &tel);
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np->nat_tgms += new_tele || notify;
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putnat(np);
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if (new_tele && np->nat_flags & NF_INFORM) {
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if (NULL != (other = getplayer(to))) {
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if (np->nat_tgms == 1)
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pr_inform(other, "[new tele]\n");
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else
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pr_inform(other, "[%d new teles]\n",
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np->nat_tgms);
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player_wakeup_all(to);
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}
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} else if (notify)
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player_wakeup_all(to);
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}
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close(fd);
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return 0;
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}
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