readpassword: delete CheckTrailingGarbage

CheckTrailingGarbage was called even when "-passfile" was
used, which is stupid, and causes false positives:

https://github.com/rfjakob/gocryptfs/issues/391
(false error "Received trailing garbage after the password"
when using -passfile in .bash_profile)

Instead of trying to improve the logic to handle that case
and make everything even more complicated, delete the function.

It is unclear if actually helps in some cases, and it definitely
harms as shown by the above bug report.

1 files changed, 0 insertions, 44 deletions

diff --git a/tests/cli/cli_test.go b/tests/cli/cli_test.go
index 58ffe44..7b6736a 100644
--- a/tests/cli/cli_test.go
+++ b/tests/cli/cli_test.go
@@ -317,50 +317,6 @@ func TestShadows(t *testing.T) {
 	}
 }
 
-// TestInitTrailingGarbage verfies that gocryptfs exits with an error if we
-// pass additional data after the password.
-func TestInitTrailingGarbage(t *testing.T) {
-	table := []struct {
-		pw            string
-		closeStdin    bool
-		expectSuccess bool
-	}{
-		{"foo\n", false, true},
-		{"foo", true, true},
-		{"foo\n", true, true},
-		{"foo\n\n", false, false},
-		{"foo\nbar", false, false},
-		{"foo\n\n", true, false},
-		{"foo\nbar", true, false},
-	}
-	for _, row := range table {
-		dir, err := ioutil.TempDir(test_helpers.TmpDir, "")
-		if err != nil {
-			t.Fatal(err)
-		}
-		cmd := exec.Command(test_helpers.GocryptfsBinary, "-q", "-init", "-scryptn=10", dir)
-		childStdin, err := cmd.StdinPipe()
-		if err != nil {
-			t.Fatal(err)
-		}
-		err = cmd.Start()
-		if err != nil {
-			t.Fatal(err)
-		}
-		childStdin.Write([]byte(row.pw))
-		if row.closeStdin {
-			childStdin.Close()
-		}
-		err = cmd.Wait()
-		success := (err == nil)
-		if success == true && row.expectSuccess == false {
-			t.Errorf("pw=%q should have failed, but succeeded", row.pw)
-		} else if success == false && row.expectSuccess == true {
-			t.Errorf("pw=%q should have succeeded, but failed", row.pw)
-		}
-	}
-}
-
 // TestMountPasswordIncorrect makes sure the correct exit code is used when the password
 // was incorrect while mounting
 func TestMountPasswordIncorrect(t *testing.T) {