2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2021, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure, Markus Armbruster
6 * Empire 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 3 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, see <http://www.gnu.org/licenses/>.
21 * See files README, COPYING and CREDITS in the root of the source
22 * tree for related information and legal notices. It is expected
23 * that future projects/authors will amend these files as needed.
27 * wu.c: Write a telegram to a user from another
29 * Known contributors to this file:
31 * Markus Armbruster, 2005-2016
43 #include "prototypes.h"
47 static struct telstr last_tel[MAXNOC];
50 clear_telegram_is_new(natid to)
52 last_tel[to].tel_from = NATID_BAD;
56 telegram_is_new(natid to, struct telstr *tel)
58 if (tel->tel_from != last_tel[to].tel_from
59 || tel->tel_type != last_tel[to].tel_type
60 || (tel->tel_type != TEL_UPDATE
61 && tel->tel_date - last_tel[to].tel_date > TEL_SECONDS)) {
69 * Send a telegram from @from to @to.
70 * Format text to send using printf-style @format and optional
71 * arguments. It is plain ASCII.
72 * If running from the update, telegram type is TEL_UPDATE.
73 * Else if @from is a deity, type is TEL_BULLETIN.
74 * Else it is TEL_NORM.
75 * Return 0 on success, -1 on error.
78 wu(natid from, natid to, char *format, ...)
85 (void)vsprintf(buf, format, ap);
89 return typed_wu(from, to, buf, TEL_UPDATE);
90 else if (np->nat_stat == STAT_GOD)
91 return typed_wu(from, to, buf, TEL_BULLETIN);
93 return typed_wu(from, to, buf, TEL_NORM);
97 * Send a telegram from @from to @to.
98 * @message is the text to send, in UTF-8.
99 * @type is the telegram type.
100 * Return 0 on success, -1 on error.
103 typed_wu(natid from, natid to, char *message, int type)
111 struct player *other;
113 if (type == TEL_ANNOUNCE)
118 if (type != TEL_ANNOUNCE)
119 if (!(np = getnatp(to)) || np->nat_stat < STAT_SANCT)
122 if ((fd = open(box, O_WRONLY | O_APPEND, 0)) < 0) {
124 if ((fd = open(box, O_WRONLY | O_APPEND | O_BINARY, 0)) < 0) {
126 logerror("telegram 'open' of %s failed", box);
130 memset(&tel, 0, sizeof(tel));
132 (void)time(&tel.tel_date);
133 len = strlen(message);
134 CANT_HAPPEN(len && message[len - 1] != '\n');
135 tel.tel_length = len;
137 tel.tel_cont = !telegram_is_new(to, &tel);
138 iov[0].iov_base = &tel;
139 iov[0].iov_len = sizeof(tel);
140 iov[1].iov_base = message;
141 iov[1].iov_len = len;
142 if (writev(fd, iov, 2) < (int)(iov[0].iov_len + iov[1].iov_len)) {
143 logerror("telegram 'write' to %s failed", box);
148 logerror("telegram 'write' to %s failed to close.", box);
152 if (type == TEL_ANNOUNCE) {
153 for (to = 0; NULL != (np = getnatp(to)); to++) {
154 if (np->nat_stat < STAT_SANCT)
156 if (!nat_accepts(to, from, REJ_ANNO))
158 if (!np->nat_ann || !tel.tel_cont) {
164 if (!np->nat_tgms || !tel.tel_cont) {
167 if (np->nat_flags & NF_INFORM) {
168 other = getplayer(to);
170 if (np->nat_tgms == 1)
171 pr_inform(other, "[new tele]\n");
173 pr_inform(other, "[%d new teles]\n", np->nat_tgms);