If an ut_host field in an utmp entry contains a ':' (e.g. for an xterm session)

w doesn't handle the non-'\0' terminated char arrays in struct utmp properly.

Submitted by:	jarle@idt.unit.no

1 files changed, 2 insertions, 1 deletions

diff --git a/usr.bin/w/w.c b/usr.bin/w/w.c
index 0a31930..ea5d2ca 100644
--- a/usr.bin/w/w.c
+++ b/usr.bin/w/w.c
@@ -307,7 +307,8 @@ main(argc, argv)
 			p = hp->h_name;
 		}
 		if (x) {
-			(void)snprintf(buf, sizeof(buf), "%s:%s", p, x);
+			(void)snprintf(buf, sizeof(buf), "%s:%.*s", p,
+			    ep->utmp.ut_host + UT_HOSTSIZE - x, x);
 			p = buf;
 		}
 		(void)printf("%-*.*s %-2.2s %-*.*s ",