gods

commit 36542d99b904673214dcd75c05241646ac08deb0
parent 1a8e6505e90f1b3cb1449e284b00452b8c5cb5ba
Author: Naveen Narayanan <zerous@nocebo.space>
Date:   Tue, 19 Oct 2021 23:21:17 +0200

Ignore old entries in the log

Diffstat:
M
main.c
 | 
7
++++++-
M
parser.c
 | 
9
++++++---
M
parser.h
 | 
2
+-

3 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/main.c b/main.c
@@ -19,6 +19,7 @@
 
 int fd_black;
 int fd_white;
+int ignore;
 
 static char buf[BUFSZ];
 SLIST_HEAD(lhead, attacker) head = SLIST_HEAD_INITIALIZER(head);
@@ -139,6 +140,7 @@ main(int argc, char **argv)
 	char bf[16];
 	int fd, found, ret;
 	struct attacker *a;
+	time_t now;
 
 	fd = open(sshlog, O_RDONLY);
 	if (fd == -1)
@@ -202,16 +204,19 @@ main(int argc, char **argv)
 	} while (ret != EOF);
 	fclose(fp);
 
+	now = time(NULL);
 	for ( ; ; ) {
 		while ((line = readline(fd)) == NULL) {
 			usleep(500000);
 			continue;
 		}
 
-		if (parse(line) == -1) {
+		if (parse(line, now) == -1) {
 			fprintf(stderr, "parse failed\n");
 			continue;
 		}
+		if (ignore)
+			continue;
 
 		a = NULL;
 		found = 0;
diff --git a/parser.c b/parser.c
@@ -14,6 +14,8 @@
 #define BUFSZ 256
 #define MAXTOKENLEN 256
 
+extern int ignore;
+
 char ip[16];
 char statmsg[BUFSZ];
 static char token[MAXTOKENLEN];
@@ -161,7 +163,7 @@ undoword()
 }
 
 static int
-timestamp()
+timestamp(time_t now)
 {
 	struct tm tm;
 
@@ -176,6 +178,7 @@ timestamp()
 
 	tm.tm_year = 121;	/* XXX Call time and setup year? */
 	attack = mktime(&tm);
+	ignore = (attack < now);
 
 	return 1;
 }
@@ -284,13 +287,13 @@ misc()
 }
 
 int
-parse(char *line)
+parse(char *line, time_t now)
 {
 	lp = line;
 	tp = token;
 
 	printf("parse: line: %s\n", lp);
-	if (!timestamp()) {
+	if (!timestamp(now)) {
 		fprintf(stderr, "timestamp not found\n");
 		return -1;
 	}
diff --git a/parser.h b/parser.h
@@ -5,6 +5,6 @@ extern char ip[];
 extern char statmsg[];
 extern time_t attack;
 
-int parse(char *);
+int parse(char *, time_t);
 
 #endif