circo

commit 68d45b297520cb9596befa948b864b43e6542efd
parent e9942a13027771bde428c773cc713420fd3abbfa
Author: Claudio Alessi <smoppy@gmail.com>
Date:   Tue, 17 Apr 2018 22:12:18 +0200

Fix a segfault when receiving malformed JOIN messages.

Diffstat:
M
circo.c
 | 
5
++++-

1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/circo.c b/circo.c
@@ -818,8 +818,11 @@ recv_join(char *who, char *chan, char *txt) {
 		chan = txt;
 	if(!strcmp(who, nick))
 		b = sel = newbuf(chan);
-	else
+	else {
 		b = getbuf(chan);
+		if(!b) /* malformed message */
+			return;
+	}
 	bprintf(b, "JOIN %s\n", who);
 	if(b == sel)
 		sel->need_redraw |= REDRAW_ALL;