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package plaintextnames
// integration tests that target plaintextnames specifically
import (
"fmt"
"io/ioutil"
"os"
"syscall"
"testing"
"github.com/rfjakob/gocryptfs/v2/internal/configfile"
"github.com/rfjakob/gocryptfs/v2/tests/test_helpers"
)
var cDir string
var pDir string
var testPw = []byte("test")
// Create and mount "-plaintextnames" fs
func TestMain(m *testing.M) {
cDir = test_helpers.InitFS(nil, "-plaintextnames")
pDir = cDir + ".mnt"
test_helpers.MountOrExit(cDir, pDir, "-extpass", "echo test")
r := m.Run()
test_helpers.UnmountPanic(pDir)
os.Exit(r)
}
// Only the PlaintextNames feature flag should be set
func TestFlags(t *testing.T) {
_, cf, err := configfile.LoadAndDecrypt(cDir+"/gocryptfs.conf", testPw)
if err != nil {
t.Fatal(err)
}
if !cf.IsFeatureFlagSet(configfile.FlagPlaintextNames) {
t.Error("PlaintextNames flag should be set but isn't")
}
if cf.IsFeatureFlagSet(configfile.FlagEMENames) || cf.IsFeatureFlagSet(configfile.FlagDirIV) {
t.Error("FlagEMENames and FlagDirIV should be not set")
}
}
// gocryptfs.diriv should NOT be created
func TestDirIV(t *testing.T) {
_, err := os.Stat(cDir + "/gocryptfs.diriv")
if err == nil {
t.Errorf("gocryptfs.diriv should not be created in the top directory")
}
err = os.Mkdir(pDir+"/dir1", 0777)
if err != nil {
t.Error(err)
}
_, err = os.Stat(pDir + "/dir1/gocryptfs.diriv")
if err == nil {
t.Errorf("gocryptfs.diriv should not be created in a subdirectory")
}
}
// With "-plaintextnames", the name "/gocryptfs.conf" is reserved, but everything
// else should work.
func TestFiltered(t *testing.T) {
filteredFile := pDir + "/gocryptfs.conf"
err := ioutil.WriteFile(filteredFile, []byte("foo"), 0777)
if err == nil {
t.Errorf("should have failed but didn't")
}
err = os.Remove(filteredFile)
if err == nil {
t.Errorf("should have failed but didn't")
}
err = ioutil.WriteFile(pDir+"/gocryptfs.diriv", []byte("foo"), 0777)
if err != nil {
t.Error(err)
}
subDir, err := ioutil.TempDir(pDir, "")
if err != nil {
t.Fatal(err)
}
fd, err := os.Create(subDir + "/gocryptfs.conf")
if err != nil {
t.Error(err)
} else {
fd.Close()
}
}
// TestInoReuseEvil makes it appear that a directory and a file share the
// same inode number.
// Only works on filesystems that recycle inode numbers (ext4 does),
// and then the test causes a hang with these messages:
//
// go-fuse: blocked for 5 seconds waiting for FORGET on i4329366
// go-fuse: blocked for 11 seconds waiting for FORGET on i4329366
// go-fuse: blocked for 17 seconds waiting for FORGET on i4329366
// [...]
//
// The test runs with -plaintextnames because that makes it easier to manipulate
// cipherdir directly.
func TestInoReuseEvil(t *testing.T) {
for i := 0; i < 2; i++ {
n := fmt.Sprintf("%s.%d", t.Name(), i)
pPath := pDir + "/" + n
cPath := cDir + "/" + n
if err := syscall.Mkdir(pPath, 0700); err != nil {
t.Fatal(err)
}
var st syscall.Stat_t
syscall.Stat(pPath, &st)
t.Logf("dir ino = %d", st.Ino)
// delete the dir "behind our back"
if err := syscall.Rmdir(cPath); err != nil {
t.Fatal(err)
}
// create a new file that will likely get the same inode number
pPath2 := pPath + "2"
fd, err := syscall.Open(pPath2, syscall.O_CREAT|syscall.O_WRONLY|syscall.O_TRUNC, 0600)
if err != nil {
t.Fatal(err)
}
defer syscall.Close(fd)
syscall.Fstat(fd, &st)
t.Logf("file ino = %d", st.Ino)
}
}
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