2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2017, 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 * anno.c: Delete announcements older than ANNO_KEEP_DAYS
29 * Known contributors to this file:
33 * Ron Koenderink, 2004-2006
34 * Markus Armbruster, 2004-2010
39 #if defined(_WIN32) && defined(__GNUC__)
45 #include "prototypes.h"
49 static int copy_and_expire(FILE *, FILE *, char *, time_t);
50 static int copy_sink(char *, size_t, void *);
53 delete_old_announcements(void)
59 char tmp_filename[1024];
62 if (anno_keep_days < 0)
66 old = now - days(anno_keep_days);
67 logerror("Deleting annos older than %s", ctime(&old));
69 if ((annfp = fopen(annfil, "rb")) == NULL) {
70 logerror("can't open telegram file %s for reading", annfil);
73 sprintf(tmp_filename, "%s.tmp", annfil);
74 if ((tmpfp = fopen(tmp_filename, "wb")) == NULL) {
75 logerror("can't open telegram file %s for writing", tmp_filename);
76 if (fclose(annfp) != 0)
77 logerror("can't close telegram file %s", annfil);
80 copy_file = copy_and_expire(annfp, tmpfp, tmp_filename, old);
82 if (fclose(annfp) != 0) {
83 logerror("can't close telegram file %s", annfil);
86 if (fclose(tmpfp) != 0) {
87 logerror("can't close temporary telegram file %s", tmp_filename);
92 if (unlink(annfil) != 0) {
93 logerror("can't delete telegram file %s", annfil);
99 if (rename(tmp_filename, annfil) != 0)
100 logerror("can't move temporary telegram file %s "
101 "to telegram file %s", tmp_filename, annfil);
103 if (remove(tmp_filename) < 0)
104 logerror("can't delete telegram file %s", tmp_filename);
109 copy_and_expire(FILE *annfp, FILE *tmpfp, char *tmp_filename,
118 while ((res = tel_read_header(annfp, annfil, &tgm)) > 0) {
119 writeit = tgm.tel_date >= expiry_time;
126 if (fwrite(&tgm, sizeof(tgm), 1, tmpfp) != 1) {
127 logerror("error writing header to temporary "
128 "telegram file %s", tmp_filename);
134 res = tel_read_body(annfp, annfil, &tgm,
135 writeit ? copy_sink : NULL, tmpfp);
142 logerror("%d announcements deleted; %d announcements saved",
148 copy_sink(char *chunk, size_t sz, void *fp)
150 if (fwrite(chunk, 1, sz, fp) != sz) {
151 logerror("error writing to %s.tmp", annfil);