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package defaults
import (
"io/ioutil"
"math/rand"
"os"
"os/exec"
"path/filepath"
"syscall"
"testing"
"time"
"golang.org/x/sys/unix"
"github.com/pkg/xattr"
"github.com/rfjakob/gocryptfs/tests/test_helpers"
)
// https://github.com/rfjakob/gocryptfs/issues/543
func TestCpA(t *testing.T) {
fn1 := filepath.Join(test_helpers.TmpDir, t.Name())
fn2 := filepath.Join(test_helpers.DefaultPlainDir, t.Name())
rand.Seed(int64(time.Now().Nanosecond()))
{
// Need unrestricted umask
old := syscall.Umask(000)
defer syscall.Umask(old)
}
for i := 0; i < 10; i++ {
// Random permissions (except owner read, which cp needs)
var modeWant os.FileMode = os.FileMode(rand.Int31n(0777+1) | 0400)
// Create file outside mount
err := ioutil.WriteFile(fn1, nil, modeWant)
if err != nil {
t.Fatal(err)
}
// Verify perms (umask problems?)
fi, err := os.Stat(fn1)
if err != nil {
t.Fatal(err)
}
if fi.Mode() != modeWant {
t.Errorf("ioutil.WriteFile created wrong permissions: want %o have %o", modeWant, fi.Mode())
}
// "cp -a" from outside to inside mount
c := exec.Command("cp", "-a", fn1, fn2)
c.Stderr = os.Stderr
c.Stdout = os.Stdout
err = c.Run()
if err != nil {
t.Fatal(err)
}
// Check perms
fi, err = os.Stat(fn2)
if err != nil {
t.Fatal(err)
}
if fi.Mode() != modeWant {
t.Errorf("cp -a did not preserve permissions: want %o have %o", modeWant, fi.Mode())
}
syscall.Unlink(fn1)
syscall.Unlink(fn2)
}
}
func getfacl(fn string) (string, error) {
c := exec.Command("getfacl", "-c", "--", fn)
out, err := c.Output()
return string(out), err
}
// https://github.com/rfjakob/gocryptfs/issues/543
func TestAcl543(t *testing.T) {
fn1 := test_helpers.TmpDir + "/TestAcl543"
fn2 := test_helpers.DefaultPlainDir + "/TestAcl543"
var c *exec.Cmd
var modeWant os.FileMode = 0777
{
// Need unrestricted umask
old := syscall.Umask(000)
defer syscall.Umask(old)
}
// Set acl on file outside gocryptfs mount
err := ioutil.WriteFile(fn1, nil, modeWant)
if err != nil {
t.Fatal(err)
}
c = exec.Command("setfacl", "-m", "u:daemon:rwx", fn1)
c.Stderr = os.Stderr
c.Stdout = os.Stdout
err = c.Run()
if err != nil {
t.Skip(err)
}
aclWant, err := getfacl(fn1)
if err != nil {
t.Fatal(err)
}
fi, err := os.Stat(fn1)
if err != nil {
t.Fatal(err)
}
if fi.Mode() != modeWant {
t.Fatalf("mode changed from %o to %o", modeWant, fi.Mode())
}
// Set acl on file inside gocryptfs mount
err = ioutil.WriteFile(fn2, nil, modeWant)
if err != nil {
t.Fatal(err)
}
c = exec.Command("setfacl", "-m", "u:daemon:rwx", fn2)
c.Stderr = os.Stderr
c.Stdout = os.Stdout
err = c.Run()
if err != nil {
t.Fatal(err)
}
aclHave1, err := getfacl(fn1)
if err != nil {
t.Fatal(err)
}
if aclHave1 != aclWant {
t.Error(aclHave1)
}
os.Remove(fn2)
// "cp -a" from outside to inside mount
c = exec.Command("cp", "-a", fn1, fn2)
c.Stderr = os.Stderr
c.Stdout = os.Stdout
err = c.Run()
if err != nil {
t.Fatal(err)
}
fi, err = os.Stat(fn2)
if err != nil {
t.Fatal(err)
}
if fi.Mode() != modeWant {
t.Errorf("cp -a did not preserve permissions: want %o have %o", modeWant, fi.Mode())
}
aclHave2, err := getfacl(fn2)
if err != nil {
t.Fatal(err)
}
if aclHave2 != aclWant {
t.Errorf("cp -a did not preserve acl: %q", aclHave1)
}
}
// Check that we handle zero-sized and undersized buffers correctly
func TestXattrOverflow(t *testing.T) {
fn := filepath.Join(test_helpers.DefaultPlainDir, t.Name())
ioutil.WriteFile(fn, nil, 0600)
attr := "user.foo123"
val := []byte("12341234")
err := xattr.LSet(fn, attr, val)
if err != nil {
t.Skip(err)
}
// Getxattr
sz, err := unix.Lgetxattr(fn, attr, nil)
if err != nil {
t.Error(err)
}
if sz != len(val) {
t.Errorf("wrong sz: want %d have %d", len(val), sz)
}
_, err = unix.Lgetxattr(fn, attr, make([]byte, 1))
if err != syscall.ERANGE {
t.Error(err)
}
// Listxattr
szWant, err := unix.Llistxattr(fn, make([]byte, 64*1024))
if err != nil {
t.Fatal(err)
}
sz, err = unix.Llistxattr(fn, nil)
if err != nil {
t.Error(err)
}
if sz != szWant {
t.Errorf("wrong sz: want %d have %d", szWant, sz)
}
_, err = unix.Llistxattr(fn, make([]byte, 1))
if err != syscall.ERANGE {
t.Error(err)
}
}
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