finger - Fix seg-fault

* Fix a seg-fault where finger was improperly assuming that w->tty and w->host
  where char arrays when in fact they were simply char pointers.

Reported-by: Robin Carey <robin.carey1@googlemail.com>

diff --git a/usr.bin/finger/util.c b/usr.bin/finger/util.c
index 7128808..6b057d9 100644 (file)
--- a/usr.bin/finger/util.c
+++ b/usr.bin/finger/util.c
@@ -142,10 +142,8 @@ enter_lastlog(PERSON *pn)
        if (doit) {
                w = walloc(pn);
                w->info = LASTLOG;
-               bcopy(ll.ll_line, w->tty, UT_LINESIZE);
-               w->tty[UT_LINESIZE] = 0;
-               bcopy(ll.ll_host, w->host, UT_HOSTSIZE);
-               w->host[UT_HOSTSIZE] = 0;
+               asprintf(&w->tty, "%s", ll.ll_line);
+               asprintf(&w->host, "%s", ll.ll_host);
                w->loginat = ll.ll_time;
        }
 }
@@ -244,9 +242,10 @@ walloc(PERSON *pn)
 
        if ((w = malloc(sizeof(WHERE))) == NULL)
                err(1, NULL);
-       if (pn->whead == NULL)
+       bzero(w, sizeof(WHERE));
+       if (pn->whead == NULL) {
                pn->whead = pn->wtail = w;
-       else {
+       } else {
                pn->wtail->next = w;
                pn->wtail = w;
        }