* Steve McClure, 1997
*/
-#include "misc.h"
+#include "prototypes.h"
#include "news.h"
-#include "nat.h"
#include "file.h"
-#include "empio.h"
-#include <fcntl.h>
#include "optlist.h"
-#include "prototypes.h"
-static void filereport(int, int, int, int);
+#define SLOTS 5
+
+struct newscache {
+ struct nwsstr news;
+ int id;
+};
+
+static struct newscache cache[MAXNOC][SLOTS];
+static int news_tail;
+
+static struct newscache *
+ncache(int actor, int event, int victim, int times);
void
nreport(natid actor, int event, natid victim, int times)
{
int nice;
int rel;
- struct natstr *np;
+ struct natstr *natp;
+ struct newscache *ncp;
+
+ ncp = ncache(actor, event, victim, times);
+ putnews(ncp->id, &ncp->news);
- filereport(actor, event, victim, times);
/*
* this is probably pretty expensive, but hopefully we
* don't fire zillions of these things off every second.
return;
if (!chance((double)-nice * times / 20.0))
return;
- if ((np = getnatp(victim)) == 0)
+ if ((natp = getnatp(victim)) == 0)
return;
- if ((rel = getrel(np, actor)) < HOSTILE)
+ if ((rel = getrel(natp, actor)) < HOSTILE)
return;
rel = HOSTILE;
setrel(victim, actor, rel);
}
-struct free {
- struct free *next;
- int id;
-};
-
-struct free *freelist;
-
-static void
-addfree(int n)
-{
- struct free *fp;
-
- fp = (struct free *)malloc(sizeof(*fp));
- fp->next = freelist;
- fp->id = n;
- freelist = fp;
-}
-
/*
- * snoop through the news articles looking
- * for articles which have timed out. Only
- * called when no free items left.
+ * Delete news articles that have expired.
*/
-static void
-findfree(void)
+void
+delete_old_news(void)
{
- time_t oldnewstime;
- int n;
+ time_t expiry_time;
+ int i, j, k;
struct nwsstr news;
- oldnewstime = time(NULL) - days(news_keep_days);
- for (n = 0; getnews(n, &news); n++) {
- if (news.nws_when < oldnewstime)
- addfree(n);
+ /* skip over expired news */
+ expiry_time = time(NULL) - days(news_keep_days);
+ for (i = 0; getnews(i, &news); i++) {
+ if (news.nws_when == 0 || news.nws_when >= expiry_time)
+ break;
}
- if (freelist == 0) {
- if (!ef_extend(EF_NEWS, 100))
- return;
- findfree();
+ /* news id 0..I-1 have expired */
+ CANT_HAPPEN(i > news_tail);
+ /* no items to delete if I is equal zero */
+ if (i == 0)
+ return;
+
+ /* move unexpired news I.. to 0.., overwriting expired news */
+ for (j = 0; getnews(i + j, &news); j++) {
+ if (news.nws_when == 0)
+ break;
+ putnews(j, &news);
}
-}
+ CANT_HAPPEN(i + j != news_tail);
+ news_tail = j;
-static int
-nextfree(void)
-{
- struct free *fp;
- int id;
+ /* mark slots no longer in use */
+ memset(&news, 0, sizeof(news));
+ for (k = 0; k < i; k++)
+ putnews(j + k, &news);
- if (freelist == 0)
- findfree();
- if ((fp = freelist) == 0)
- return 0;
- freelist = fp->next;
- id = fp->id;
- free(fp);
- return id;
+ /* clear cache because moving news invalidated it */
+ memset(&cache, 0, sizeof(cache));
}
-#define SLOTS 5
-
-struct newscache {
+/*
+ * Initialize news reporting.
+ * Must run between open of file EF_NEWS and first nreport().
+ */
+void
+init_nreport(void)
+{
+ int newest_item;
struct nwsstr news;
- int id;
-};
+ for (newest_item = 0; getnews(newest_item, &news); newest_item++) {
+ if (news.nws_when == 0)
+ break;
+ }
+ news_tail = newest_item;
+}
+
+/*
+ * Look to see if the same message has been generated
+ * in the last 5 minutes, if so just increment the times
+ * field instead of creating a new message.
+ */
static struct newscache *
-ncache(time_t now, int actor, int event, int victim, int times)
+ncache(int actor, int event, int victim, int times)
{
- static struct newscache cache[MAXNOC][SLOTS];
register struct newscache *np;
int i;
int oldslot;
time_t oldtime;
+ time_t now = time(NULL);
oldslot = -1;
oldtime = 0x7fffffff;
np->news.nws_when = now;
np->news.nws_vrb = event;
np->news.nws_ntm = times;
- np->id = nextfree();
+ ef_ensure_space(EF_NEWS, news_tail, 100);
+ np->id = news_tail++;
return np;
}
-
-static void
-filereport(int actor, int event, int victim, int times)
-{
- struct newscache *np;
- time_t now;
-
- time(&now);
- np = ncache(now, actor, event, victim, times);
- ef_write(EF_NEWS, np->id, (s_char *)&np->news);
-}