From 92041e74d2cbef19c1a92c8e3e987432fbb2d23a Mon Sep 17 00:00:00 2001
From: mpf <mpf@openbsd.org>
Date: Wed, 20 Aug 2008 09:29:51 +0000
Subject: [PATCH] Regression tests for gzip(1):  - Test if we detect truncated
 or corrupted files.  - Test basic functionality OK millert@, markus@

---
 regress/usr.bin/Makefile      |  6 +--
 regress/usr.bin/gzip/Makefile | 17 +++++++++
 regress/usr.bin/gzip/t1.sh    | 70 +++++++++++++++++++++++++++++++++++
 regress/usr.bin/gzip/t2.sh    | 39 +++++++++++++++++++
 4 files changed, 129 insertions(+), 3 deletions(-)
 create mode 100644 regress/usr.bin/gzip/Makefile
 create mode 100644 regress/usr.bin/gzip/t1.sh
 create mode 100644 regress/usr.bin/gzip/t2.sh

diff --git a/regress/usr.bin/Makefile b/regress/usr.bin/Makefile
index e3811f50c83..9896cf325f6 100644
--- a/regress/usr.bin/Makefile
+++ b/regress/usr.bin/Makefile
@@ -1,7 +1,7 @@
-#	$OpenBSD: Makefile,v 1.18 2006/03/14 03:57:42 ray Exp $
+#	$OpenBSD: Makefile,v 1.19 2008/08/20 09:29:51 mpf Exp $
 #	$NetBSD: Makefile,v 1.1 1997/12/30 23:27:11 cgd Exp $
 
-SUBDIR+= basename bc cap_mkdb dc diff diff3 dirname grep gzsig m4 make patch 
-SUBDIR+= rcs sdiff sort ssh tsort
+SUBDIR+= basename bc cap_mkdb dc diff diff3 dirname grep gzip gzsig
+SUBDIR+= m4 make patch rcs sdiff sort ssh tsort
 
 .include <bsd.subdir.mk>
diff --git a/regress/usr.bin/gzip/Makefile b/regress/usr.bin/gzip/Makefile
new file mode 100644
index 00000000000..6a17ae8851a
--- /dev/null
+++ b/regress/usr.bin/gzip/Makefile
@@ -0,0 +1,17 @@
+# $OpenBSD: Makefile,v 1.1 2008/08/20 09:29:51 mpf Exp $
+
+TESTSCRIPTS=t1 t2
+
+.for t in ${TESTSCRIPTS}
+REGRESS_TARGETS+=t-${t}
+CLEANFILES+=${t}.gz
+
+t-${t}:
+	sh ${.CURDIR}/${t}.sh ${.CURDIR} ${.OBJDIR}
+.endfor
+
+CLEANFILES+=*.test
+
+.PHONY: ${REGRESS_TARGETS}
+
+.include <bsd.regress.mk>
diff --git a/regress/usr.bin/gzip/t1.sh b/regress/usr.bin/gzip/t1.sh
new file mode 100644
index 00000000000..8eb29931990
--- /dev/null
+++ b/regress/usr.bin/gzip/t1.sh
@@ -0,0 +1,70 @@
+#!/bin/sh
+# $OpenBSD: t1.sh,v 1.1 2008/08/20 09:29:51 mpf Exp $
+
+# Test if gzip(1) detects truncated or corrupted files
+
+# Copyright (c) 2008 Marco Pfatschbacher <mpf@openbsd.org>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+# truncate at 2k
+gzip < /etc/rc | dd bs=1k count=2 of=t1.gz 2>/dev/null
+if gzip -vt t1.gz; then
+	echo "=> ERROR: truncation not detected!"
+	exit 1
+else
+	echo "=> OK"
+fi
+
+# truncate at 1k
+gzip < /etc/rc | dd bs=1k count=1 of=t1.gz 2>/dev/null
+if gzip -vt t1.gz; then
+	echo "=> ERROR: truncation not detected!"
+	exit 1
+else
+	echo "=> OK"
+fi
+
+# skip some data in the middle
+gzip < /etc/rc | dd bs=1k seek=1 >> t1.gz 2>/dev/null
+if gzip -vt t1.gz; then
+	echo "=> ERROR: corruption not detected!"
+	exit 1
+else
+	echo "=> OK"
+fi
+
+# simple fuzzer that modifies one random byte at a random offset
+
+gzip < /etc/rc > t1.gz
+for i in `jot 100`; do
+	where=$((RANDOM % 2048 + 256)) # random offset (but skip the header)
+	orig=`dd if=t1.gz skip=$where bs=1 count=1 2>/dev/null |\
+	    hexdump -e '"%d"'`
+	fuzz=$((((orig + RANDOM) % 256) + 1))
+	if [ $fuzz = $orig ]; then
+		fuzz=$(((fuzz + 1) % 256))
+	fi
+	echo "$i/100: fuzzing byte @$where: $orig -> $fuzz"
+
+	if (dd if=t1.gz bs=1 count=$where 2>/dev/null; \
+	    echo -n \\0`printf "%o" $fuzz`; \
+	    dd if=t1.gz bs=1 skip=$((where+1)) 2>/dev/null) | gzip -tv; then
+		echo "=> ERROR: corruption not detected!"
+		exit 1
+	else
+		echo "=> OK"
+	fi
+done
+
+exit 0
diff --git a/regress/usr.bin/gzip/t2.sh b/regress/usr.bin/gzip/t2.sh
new file mode 100644
index 00000000000..9d2d39f4c67
--- /dev/null
+++ b/regress/usr.bin/gzip/t2.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+# $OpenBSD: t2.sh,v 1.1 2008/08/20 09:29:51 mpf Exp $
+
+# test basic gzip functionality
+
+gzip -c /etc/rc > t1.gz
+if ! gzip -vt t1.gz; then
+	echo "=> ERROR: could not gzip"
+	exit 1
+else
+	echo "=> OK"
+fi
+
+if ! gunzip -c t1.gz | cmp -s - /etc/rc; then
+	echo "=> ERROR: uncompressed file does not match"
+	gunzip -c t1.gz | diff - /etc/rc
+	exit 1
+else
+	echo "=> OK"
+fi
+
+gzip -c /etc/rc /etc/motd > t1.gz
+if ! gzip -vt t1.gz; then
+	echo "=> ERROR: could not gzip multiple files"
+	exit 1
+else
+	echo "=> OK"
+fi
+
+cat /etc/rc /etc/motd > rcmotd.test
+if ! gunzip -c t1.gz | cmp -s - rcmotd.test; then
+	echo "=> ERROR: gunzipped files do not match"
+	gunzip -c t1.gz | diff - rcmotd.test
+	exit 1
+else
+	echo "=> OK"
+fi
+
+exit 0
-- 
2.20.1