diff options
| author | Todd C. Miller <millert@cvs.openbsd.org> | 2000-08-02 04:10:51 +0000 |
|---|---|---|
| committer | Todd C. Miller <millert@cvs.openbsd.org> | 2000-08-02 04:10:51 +0000 |
| commit | eb9184a174a8fb2f98f2f1418f87863716a5c115 (patch) | |
| tree | 02b606fefe2b41782be054be7fdd586e53befba0 /usr.bin/calendar/io.c | |
| parent | 3602a750205b32f442e2e132baa5b3e9a3c83349 (diff) | |
$HOME paranoia: never use getenv("HOME") w/o checking for NULL and non-zero
Diffstat (limited to 'usr.bin/calendar/io.c')
| -rw-r--r-- | usr.bin/calendar/io.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/usr.bin/calendar/io.c b/usr.bin/calendar/io.c index 9b4bfb06198..1b39f96a968 100644 --- a/usr.bin/calendar/io.c +++ b/usr.bin/calendar/io.c @@ -1,4 +1,4 @@ -/* $OpenBSD: io.c,v 1.8 1999/11/25 03:46:47 pjanzen Exp $ */ +/* $OpenBSD: io.c,v 1.9 2000/08/02 04:10:47 millert Exp $ */ /* * Copyright (c) 1989, 1993, 1994 @@ -43,7 +43,7 @@ static const char copyright[] = #if 0 static const char sccsid[] = "@(#)calendar.c 8.3 (Berkeley) 3/25/94"; #else -static char rcsid[] = "$OpenBSD: io.c,v 1.8 1999/11/25 03:46:47 pjanzen Exp $"; +static char rcsid[] = "$OpenBSD: io.c,v 1.9 2000/08/02 04:10:47 millert Exp $"; #endif #endif /* not lint */ @@ -310,7 +310,10 @@ opencal() if (!freopen(calendarFile, "r", stdin)) return (NULL); } else { - chdir(getenv("HOME")); + char *home = getenv("HOME"); + if (home == NULL || *home == '\0') + errx(1, "cannot get home directory"); + chdir(home); if (!(chdir(calendarHome) == 0 && freopen(calendarFile, "r", stdin))) errx(1, "no calendar file: ``%s'' or ``~/%s/%s", |