#! /bin/sh

# This program is distributable under the terms of the GNU GPL (see
# COPYING).

# Test the --tweak, --no-tweak, and --no-tweak-hlinked options.

. $srcdir/testsuite/rsync.fns

# Replacement for [ a -ef b ] that doesn't follow symlinks.
samefile() {
	inum1=`ls -di "$1" | sed 's/ .*$//'`
	inum2=`ls -di "$2" | sed 's/ .*$//'`
	[ "$inum1" = "$inum2" ]
}

chkfile="$scratchdir/rsync.chk"
outfile="$scratchdir/rsync.out"

makepath "$fromdir"

# usage: testit OPTION FTYPE ATTR
testit() {
	option="$1"
	ftype=$2
	attr=$3
	testid="$option $ftype $attr"
	echo "Running test: ($testid)"

	# Prepare the destination directory:
	# file1: attr different from source
	# file2: attr different from source, hard-linked with file2hl
	# file3: attr same as source, hard-linked with file3hl
	extraopt=''
	rm -rf "$todir"
	$RSYNC -a "$fromdir/" "$todir/"
	case "$ftype,$attr" in
	*,p)
		chmod 700 "$todir/file1" "$todir/file2"
		icode='...p.....'
		;;
	L,t)
		# Grab the new symlinks.
		$RSYNC -a "$scratchdir/newlinks/" "$todir/"
		icode='..t......'
		;;
	*,t)
		touch -d @1194208678 "$todir/file1" "$todir/file2"
		# Make sure unchanged_attrs signals a difference in mtime.
		extraopt='--checksum'
		icode='..t......'
		;;
	t_symlink)
	esac
	ln "$todir/file2" "$todir/file2hl"
	ln "$todir/file3" "$todir/file3hl"

	# Determine the expected results.
	case "$option" in
	''|*--tweak)
		# Tweak both files, tweaking through to file2hl.
		a1='.'
		a2='.'
		changes_f2hl=1
		;;
	--no-tweak-hlinked)
		# Tweak file1 and recreate file2, breaking the link to file2hl.
		a1='.'
		a2='c'
		changes_f2hl=''
		;;
	--no-tweak)
		# Recreate both file1 and file2, breaking the link to file2hl.
		a1='c'
		a2='c'
		changes_f2hl=''
		;;
	esac
	if [ "$ftype" = L ]; then
		ltgt=' -> foo'
	else
		ltgt=''
	fi
	cat >"$chkfile" <<EOCHK
$a1$ftype$icode file1$ltgt
$a2$ftype$icode file2$ltgt
EOCHK

	$RSYNC -a -i --omit-dir-times $option $extraopt "$fromdir/" "$todir/" | tee "$outfile"
	diff $diffopt "$chkfile" "$outfile" || test_fail "itemize mismatch for test ($testid)"

	if [ $changes_f2hl ]; then
		samefile "$todir/file2" "$todir/file2hl" || test_fail "rsync should not have broken the file2 hard link"
		if [ $attr = p ]; then
			check_perms "$todir/file2hl" rw------- "test ($testid)"
		fi
	else
		! samefile "$todir/file2" "$todir/file2hl" || test_fail "rsync should have broken the file2 hard link"
		if [ $attr = p ]; then
			check_perms "$todir/file2hl" rwx------ "test ($testid)"
		fi
	fi

	# Nothing should ever happen to file3.
	samefile "$todir/file3" "$todir/file3hl" || test_fail "rsync should not have broken the file3 hard link"
}

# REGULAR FILES
echo data >"$fromdir/file1"
echo data >"$fromdir/file2"
echo data >"$fromdir/file3"
chmod 600 "$fromdir/file1" "$fromdir/file2" "$fromdir/file3"
for o in '' '--no-tweak --tweak' '--no-tweak-hlinked' '--no-tweak'; do
	for a in p t; do
		testit "$o" f $a
	done
done

# SYMLINKS
rm -f "$fromdir/file1" "$fromdir/file2" "$fromdir/file3"
if config_test CAN_HARDLINK_SYMLINK && config_test HAVE_LUTIMES; then
	ln -s foo "$fromdir/file1"
	ln -s foo "$fromdir/file2"
	ln -s foo "$fromdir/file3"
	# Since we don't have `touch -h', sleep once and make some newer
	# symlinks that each test can copy into the destination directory.
	sleep 1
	makepath "$scratchdir/newlinks"
	ln -s foo "$scratchdir/newlinks/file1"
	ln -s foo "$scratchdir/newlinks/file2"
	for o in '' '--no-tweak --tweak' '--no-tweak-hlinked' '--no-tweak'; do
		# For symlinks, we test only times, not permissions.
		testit "$o" L t
	done
fi

# SPECIAL FILES
rm -f "$fromdir/file1" "$fromdir/file2" "$fromdir/file3"
if config_test CAN_HARDLINK_SPECIAL \
	&& mkfifo "$fromdir/file1" "$fromdir/file2" "$fromdir/file3"; then
	chmod 600 "$fromdir/file1" "$fromdir/file2" "$fromdir/file3"
	for o in '' '--no-tweak --tweak' '--no-tweak-hlinked' '--no-tweak'; do
		for a in p t; do
			testit "$o" S $a
		done
	done
fi

# The script would have aborted on error, so getting here means we've won.
exit 0