diff options
| author | Moritz Jodeit <moritz@cvs.openbsd.org> | 2007-04-02 08:04:53 +0000 |
|---|---|---|
| committer | Moritz Jodeit <moritz@cvs.openbsd.org> | 2007-04-02 08:04:53 +0000 |
| commit | 1df025fc6b3d269fad5c5f838ecd9a101e37f080 (patch) | |
| tree | d31fe9a6daffaa9db7530d07a42d241b866a4df0 | |
| parent | e308f93242ab3516371f98ec34ad545dc613c207 (diff) | |
The scanf(3) family of functions can return EOF (-1) if an input
failure occurs. So check it, before blindly adding it to some
pointer.
ok millert@
| -rw-r--r-- | usr.bin/sort/init.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/usr.bin/sort/init.c b/usr.bin/sort/init.c index 31049abbdcd..1b13dd233d6 100644 --- a/usr.bin/sort/init.c +++ b/usr.bin/sort/init.c @@ -1,4 +1,4 @@ -/* $OpenBSD: init.c,v 1.9 2006/11/16 00:14:34 ray Exp $ */ +/* $OpenBSD: init.c,v 1.10 2007/04/02 08:04:52 moritz Exp $ */ /*- * Copyright (c) 1993 @@ -36,7 +36,7 @@ #if 0 static char sccsid[] = "@(#)init.c 8.1 (Berkeley) 6/6/93"; #else -static char rcsid[] = "$OpenBSD: init.c,v 1.9 2006/11/16 00:14:34 ray Exp $"; +static char rcsid[] = "$OpenBSD: init.c,v 1.10 2007/04/02 08:04:52 moritz Exp $"; #endif #endif /* not lint */ @@ -115,7 +115,9 @@ setcolumn(char *pos, struct field *cur_fld, int gflag) int tmp; col = cur_fld->icol.num ? (&(*cur_fld).tcol) : (&(*cur_fld).icol); - pos += sscanf(pos, "%d", &(col->num)); + if (sscanf(pos, "%d", &(col->num)) != 1) + errx(2, "missing field number"); + pos++; while (isdigit(*pos)) pos++; if (col->num <= 0 && !(col->num == 0 && col == &(cur_fld->tcol))) @@ -124,7 +126,9 @@ setcolumn(char *pos, struct field *cur_fld, int gflag) if (!col->num) errx(2, "cannot indent end of line"); pos++; - pos += sscanf(pos, "%d", &(col->indent)); + if (sscanf(pos, "%d", &(col->indent)) != 1) + errx(2, "missing offset"); + pos++; while (isdigit(*pos)) pos++; if (&cur_fld->icol == col) |