/*
* Empire - A multi-player, client/server Internet based war game.
- * Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
- * Ken Stevens, Steve McClure
+ * Copyright (C) 1986-2015, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ * Ken Stevens, Steve McClure, Markus Armbruster
*
- * This program is free software; you can redistribute it and/or modify
+ * 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 2 of the License, or
+ * 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,
* 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* ---
*
- * See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
- * related information and legal notices. It is expected that any future
- * projects/authors will amend these files as needed.
+ * 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.
*
* ---
*
* anno.c: Delete announcements older than ANNO_KEEP_DAYS
- *
+ *
* Known contributors to this file:
* Ken Stevens, 1995
* Doug Hay, 1998
* Steve McClure, 2000
+ * Ron Koenderink, 2004-2006
+ * Markus Armbruster, 2004-2010
*/
-#include "misc.h"
-#include "tel.h"
-#include <stdio.h>
-#include <fcntl.h>
-#if !defined(_WIN32)
-#include <sys/file.h>
-#include <unistd.h>
+#include <config.h>
+
+#if defined(_WIN32) && defined(__GNUC__)
+#include <io.h>
#endif
+#include <stdio.h>
+#include <time.h>
+#include "tel.h"
#include "update.h"
-#include "common.h"
+
+static int copy_and_expire(FILE *, FILE *, char *, time_t);
+static int copy_sink(char *, size_t, void *);
void
delete_old_announcements(void)
{
- time_t now;
- time_t old;
- struct telstr tgm;
- FILE *oldfp;
- int tmpfd;
- s_char tmp_filename[1024];
- int writeit;
- s_char message[MAXTELSIZE];
- int deleted = 0;
- int saved = 0;
- int length;
- int nbytes;
- int first = 1;
+ time_t now;
+ time_t old;
+ FILE *annfp;
+ FILE *tmpfp;
+ char tmp_filename[1024];
+ int copy_file;
- time(&now);
- old = now - days(ANNO_KEEP_DAYS);
- logerror("Deleting annos older than %s", ctime(&old));
+ if (anno_keep_days < 0)
+ return;
-#if !defined(_WIN32)
- if ((oldfp = fopen(annfil, "r+")) == 0) {
-#else
- if ((oldfp = fopen(annfil, "r+b")) == 0) {
-#endif
- logerror("can't read telegram file %s", annfil);
- return;
+ time(&now);
+ old = now - days(anno_keep_days);
+ logerror("Deleting annos older than %s", ctime(&old));
+
+ if ((annfp = fopen(annfil, "rb")) == NULL) {
+ logerror("can't open telegram file %s for reading", annfil);
+ return;
+ }
+ sprintf(tmp_filename, "%s.tmp", annfil);
+ if ((tmpfp = fopen(tmp_filename, "wb")) == NULL) {
+ logerror("can't open telegram file %s for writing", tmp_filename);
+ if (fclose(annfp) != 0)
+ logerror("can't close telegram file %s", annfil);
+ return;
+ }
+ copy_file = copy_and_expire(annfp, tmpfp, tmp_filename, old);
+
+ if (fclose(annfp) != 0) {
+ logerror("can't close telegram file %s", annfil);
+ copy_file = 0;
+ }
+ if (fclose(tmpfp) != 0) {
+ logerror("can't close temporary telegram file %s", tmp_filename);
+ copy_file = 0;
+ }
+#if defined(_WIN32)
+ if (copy_file) {
+ if (unlink(annfil) != 0) {
+ logerror("can't delete telegram file %s", annfil);
+ copy_file = 0;
}
- sprintf(tmp_filename, "%s.tmp", annfil);
-#if !defined(_WIN32)
- if ((tmpfd = open(tmp_filename, O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0) {
-#else
- if ((tmpfd = open(tmp_filename, O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0666)) < 0) {
+ }
#endif
- logerror("can't write telegram file %s", tmp_filename);
- return;
- }
- while (fread((s_char *) &tgm, sizeof(tgm), 1, oldfp) == 1) {
- writeit = 1;
- if (tgm.tel_length < 0) {
- logerror("bad telegram file header (length)");
- return;
- }
- if (tgm.tel_type < 0 || tgm.tel_type > TEL_LAST) {
- logerror("bad telegram file header (type)");
- writeit = 0;
- }
- if (first) {
- first = 0;
- if (tgm.tel_date >= old) {
- fclose(oldfp);
- return;
- }
- }
-
- if (tgm.tel_date < old) {
- writeit = 0;
- }
+ if (copy_file) {
+ if (rename(tmp_filename, annfil) != 0)
+ logerror("can't move temporary telegram file %s "
+ "to telegram file %s", tmp_filename, annfil);
+ } else {
+ if (remove(tmp_filename) < 0)
+ logerror("can't delete telegram file %s", tmp_filename);
+ }
+}
+
+static int
+copy_and_expire(FILE *annfp, FILE *tmpfp, char *tmp_filename,
+ time_t expiry_time)
+{
+ struct telstr tgm;
+ int res, writeit;
+ int deleted = 0;
+ int saved = 0;
+ int first = 1;
- if (writeit) {
- if (write(tmpfd, &tgm, sizeof(tgm)) < (int)sizeof(tgm)) {
- logerror("error writing to ann.tmp");
- return;
- }
- ++saved;
- } else {
- ++deleted;
- }
- length = tgm.tel_length;
- while (length > 0) {
- nbytes = length;
- if (nbytes > (int)sizeof(message))
- nbytes = sizeof(message);
- (void) fread(message, sizeof(s_char), nbytes, oldfp);
- if (writeit) {
- if (write(tmpfd, message, nbytes) < nbytes) {
- logerror("Error writing to ann.tmp");
- return;
- }
- }
- length -= nbytes;
- }
+ while ((res = tel_read_header(annfp, annfil, &tgm)) > 0) {
+ writeit = tgm.tel_date >= expiry_time;
+ if (first) {
+ first = 0;
+ if (writeit)
+ return 0;
}
- logerror("%d announcements deleted; %d announcements saved",
- deleted, saved);
- fclose(oldfp);
- close(tmpfd);
- unlink(annfil);
- rename(tmp_filename, annfil);
+ if (writeit) {
+ if (fwrite(&tgm, sizeof(tgm), 1, tmpfp) != 1) {
+ logerror("error writing header to temporary "
+ "telegram file %s", tmp_filename);
+ return 0;
+ }
+ ++saved;
+ } else
+ ++deleted;
+ res = tel_read_body(annfp, annfil, &tgm,
+ writeit ? copy_sink : NULL, tmpfp);
+ if (res < 0)
+ return 0;
+ }
+
+ if (res < 0)
+ return 0;
+ logerror("%d announcements deleted; %d announcements saved",
+ deleted, saved);
+ return 1;
+}
+
+static int
+copy_sink(char *chunk, size_t sz, void *fp)
+{
+ if (fwrite(chunk, 1, sz, fp) != sz) {
+ logerror("error writing to %s.tmp", annfil);
+ return -1;
+ }
+ return 0;
}
projects / empserver / blobdiff