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package fsck
import (
"encoding/base64"
"os"
"os/exec"
"runtime"
"strings"
"syscall"
"testing"
"time"
"github.com/pkg/xattr"
"github.com/rfjakob/gocryptfs/v2/internal/exitcodes"
"github.com/rfjakob/gocryptfs/v2/tests/test_helpers"
)
func dec64(in string) (out []byte) {
out, err := base64.RawURLEncoding.DecodeString(in)
if err != nil {
panic(err)
}
return out
}
func TestBrokenFsV14(t *testing.T) {
// git does not save extended attributes, so we apply them here.
// xattr_good
xattr.Set("broken_fs_v1.4/6nGs4Ugr3EAHd0KzkyLZ-Q",
"user.gocryptfs.0a5e7yWl0SGUGeWB0Sy2Kg",
dec64("hxnZvXSkDicfwVS9w4r1yYkFF61Qou6NaL-VhObYEdu6kuM"))
// xattr_corrupt_name
xattr.Set("broken_fs_v1.4/CMyUifVTjW5fsgXonWBT_RDkvLkdGrLttkZ45T3Oi3A",
"user.gocryptfs.0a5e7yWl0SGUGeWB0Sy2K0",
dec64("QHUMDTgbnl8Sv_A2dFQic_G2vN4_gmDna3651JAhF7OZ-YI"))
// xattr_corrupt_value
xattr.Set("broken_fs_v1.4/b00sbnGXGToadr01GHZaYQn8tjyRhe1OXNBZoQtMlcQ",
"user.gocryptfs.0a5e7yWl0SGUGeWB0Sy2Kg",
dec64("A0hvCePeKpL8bCpijhDKtf7cIijXYQsPnEbNJ84M2ONW0dd"))
cmd := exec.Command(test_helpers.GocryptfsBinary, "-fsck", "-extpass", "echo test", "broken_fs_v1.4")
outBin, err := cmd.CombinedOutput()
out := string(outBin)
t.Log(out)
code := test_helpers.ExtractCmdExitCode(err)
if code != exitcodes.FsckErrors {
t.Errorf("wrong exit code, have=%d want=%d", code, exitcodes.FsckErrors)
}
}
func TestMalleableBase64(t *testing.T) {
cmd := exec.Command(test_helpers.GocryptfsBinary, "-fsck", "-extpass", "echo test", "malleable_base64")
outBin, err := cmd.CombinedOutput()
out := string(outBin)
t.Log(out)
code := test_helpers.ExtractCmdExitCode(err)
if code != exitcodes.FsckErrors {
t.Errorf("wrong exit code, have=%d want=%d", code, exitcodes.FsckErrors)
}
}
func TestExampleFses(t *testing.T) {
dirfd, err := os.Open("../example_filesystems")
if err != nil {
t.Fatal(err)
}
var fsNames []string
entries, err := dirfd.Readdir(0)
if err != nil {
t.Fatal(err)
}
for _, e := range entries {
if !e.IsDir() {
continue
}
if strings.Contains(e.Name(), "reverse") {
continue
}
if e.Name() == "content" {
continue
}
fsNames = append(fsNames, e.Name())
}
for _, n := range fsNames {
t.Logf("Checking %q", n)
path := "../example_filesystems/" + n
cmd := exec.Command(test_helpers.GocryptfsBinary, "-fsck", "-extpass", "echo test", path)
outBin, err := cmd.CombinedOutput()
out := string(outBin)
code := test_helpers.ExtractCmdExitCode(err)
if code == exitcodes.DeprecatedFS {
continue
}
if code != 0 {
t.Log(out)
t.Errorf("fsck returned code %d but fs should be clean", code)
}
}
dirfd.Close()
}
// TestTerabyteFile verifies that fsck does something intelligent when it hits
// a 1-terabyte sparse file (trying to read the whole file is not intelligent).
func TestTerabyteFile(t *testing.T) {
if runtime.GOOS != "linux" {
t.Skipf("Only linux supports SEEK_DATA")
}
cDir := test_helpers.InitFS(t)
pDir := cDir + ".mnt"
test_helpers.MountOrFatal(t, cDir, pDir, "-extpass", "echo test")
defer test_helpers.UnmountErr(pDir)
veryBigFile := pDir + "/veryBigFile"
fd, err := os.Create(veryBigFile)
if err != nil {
t.Fatal(err)
}
defer fd.Close()
var oneTiB int64 = 1024 * 1024 * 1024 * 1024
_, err = fd.WriteAt([]byte("foobar"), oneTiB)
if err != nil {
t.Fatal(err)
}
fi, err := fd.Stat()
if err != nil {
t.Fatal(err)
}
t.Logf("size=%d, running fsck", fi.Size())
cmd := exec.Command(test_helpers.GocryptfsBinary, "-fsck", "-extpass", "echo test", cDir)
cmd.Stderr = os.Stderr
cmd.Stdout = os.Stdout
cmd.Start()
timer := time.AfterFunc(10*time.Second, func() {
t.Error("timeout, sending SIGINT")
syscall.Kill(cmd.Process.Pid, syscall.SIGINT)
})
cmd.Wait()
timer.Stop()
}
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