2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2005, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
23 * related information and legal notices. It is expected that any future
24 * projects/authors will amend these files as needed.
28 * wu.c: Write a telegram to a user from another
30 * Known contributors to this file:
49 #include "prototypes.h"
51 static struct telstr last_tel[MAXNOC];
54 clear_telegram_is_new(natid to)
56 last_tel[to].tel_type = 0;
57 last_tel[to].tel_from = 0;
58 last_tel[to].tel_date = 0;
62 * telegram_is_new counts new telegrams the same as read_telegrams in
63 * lib/commands/mail.c and lib/commands/rea.c
67 telegram_is_new(natid to, struct telstr *tel)
71 is_new |= tel->tel_type != last_tel[to].tel_type;
72 is_new |= tel->tel_from != last_tel[to].tel_from;
73 is_new |= !update_pending && /* sometimes updates take a long time */
74 abs(tel->tel_date - last_tel[to].tel_date) > TEL_SECONDS;
76 last_tel[to].tel_type = tel->tel_type;
77 last_tel[to].tel_from = tel->tel_from;
78 last_tel[to].tel_date = tel->tel_date;
84 * Send a telegram from FROM to TO.
85 * Format text to send using printf-style FORMAT and optional
86 * arguments. It is plain ASCII.
87 * If running from the update, telegram type is TEL_UPDATE.
88 * Else if FROM is a deity, type is TEL_BULLETIN.
89 * Else it is TEL_NORM.
90 * Return 0 on success, -1 on error.
93 wu(natid from, natid to, char *format, ...)
100 (void)vsprintf(buf, format, ap);
104 return typed_wu(from, to, buf, TEL_UPDATE);
105 else if (np->nat_stat == STAT_GOD)
106 return typed_wu(from, to, buf, TEL_BULLETIN);
108 return typed_wu(from, to, buf, TEL_NORM);
112 * Send a telegram from FROM to TO.
113 * MESSAGE is the text to send, in UTF-8.
114 * TYPE is the telegram type.
115 * Return 0 on success, -1 on error.
118 typed_wu(natid from, natid to, char *message, int type)
131 struct player *other;
133 if (type == TEL_ANNOUNCE)
138 if (type != TEL_ANNOUNCE)
139 if ((np = getnatp(to)) == 0 || np->nat_stat < STAT_SANCT)
142 if ((fd = open(box, O_WRONLY | O_APPEND, 0)) < 0) {
144 if ((fd = open(box, O_WRONLY | O_APPEND | O_BINARY, 0)) < 0) {
146 logerror("telegram 'open' of %s (#%d) failed", box, to);
150 (void)time(&tel.tel_date);
151 len = strlen(message);
152 if (CANT_HAPPEN(len > MAXTELSIZE)) {
156 tel.tel_length = len;
159 iov[0].iov_base = &tel;
160 iov[0].iov_len = sizeof(tel);
161 iov[1].iov_base = message;
162 iov[1].iov_len = len;
163 if (writev(fd, iov, 2) < (int)(iov[0].iov_len + iov[1].iov_len)) {
165 if ((write(fd, &tel, sizeof(tel)) != sizeof(tel)) ||
166 (write(fd, message, len) != len)) {
168 logerror("telegram 'write' to #%d failed", to);
172 if (close(fd) == -1) {
173 logerror("telegram 'write' to #%d failed to close.", to);
174 } else if (write_ok && type == TEL_ANNOUNCE) {
175 for (to = 0; NULL != (np = getnatp(to)); to++) {
176 if (np->nat_stat < STAT_SANCT)
178 if (!player->god && (getrejects(from, np) & REJ_ANNO))
180 notify = (np->nat_ann == 0);
184 player_wakeup_all(to);
186 } else if (write_ok) {
187 notify = (np->nat_tgms == 0);
188 new_tele = telegram_is_new(to, &tel);
189 np->nat_tgms += new_tele || notify;
192 if (new_tele && np->nat_flags & NF_INFORM) {
193 if (NULL != (other = getplayer(to))) {
194 if (np->nat_tgms == 1)
195 pr_inform(other, "[new tele]\n");
197 pr_inform(other, "[%d new teles]\n", np->nat_tgms);
198 player_wakeup_all(to);
201 player_wakeup_all(to);