aboutsummaryrefslogtreecommitdiff
path: root/tests/cli/cli_test.go
blob: 2872592dfe5ba5c5ba02ece1cc83fff6fd2dd7e4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
package cli

// Test CLI operations like "-init", "-password" etc

import (
	"fmt"
	"io/ioutil"
	"os"
	"os/exec"
	"strconv"
	"strings"
	"syscall"
	"testing"
	"time"

	"github.com/rfjakob/gocryptfs/internal/configfile"
	"github.com/rfjakob/gocryptfs/internal/exitcodes"

	"github.com/rfjakob/gocryptfs/tests/test_helpers"
)

var testPw = []byte("test")

func TestMain(m *testing.M) {
	test_helpers.ResetTmpDir(false)
	before := test_helpers.ListFds(0, "")
	r := m.Run()
	after := test_helpers.ListFds(0, "")
	if len(before) != len(after) {
		fmt.Printf("fd leak in test process? before, after:\n%v\n%v\n", before, after)
		os.Exit(1)
	}
	os.Exit(r)
}

// Test -init flag
func TestInit(t *testing.T) {
	dir := test_helpers.InitFS(t)
	_, c, err := configfile.LoadAndDecrypt(dir+"/"+configfile.ConfDefaultName, testPw)
	if err != nil {
		t.Fatal(err)
	}
	if c.IsFeatureFlagSet(configfile.FlagAESSIV) {
		t.Error("AESSIV flag should not be set")
	}
}

// Test that gocryptfs.conf and gocryptfs.diriv are there with the expected
// permissions after -init
func TestInitFilePerms(t *testing.T) {
	dir := test_helpers.InitFS(t)
	var st syscall.Stat_t
	syscall.Stat(dir+"/gocryptfs.conf", &st)
	perms := st.Mode & 0777
	if perms != 0400 {
		t.Errorf("Wrong permissions for gocryptfs.conf: %#o", perms)
	}
	st = syscall.Stat_t{}
	syscall.Stat(dir+"/gocryptfs.diriv", &st)
	perms = st.Mode & 0777
	// From v1.7.1, these are created with 0440 permissions, see
	// https://github.com/rfjakob/gocryptfs/issues/387 .
	// From v2.0, created with 0444 perms, see
	// https://github.com/rfjakob/gocryptfs/issues/539 .
	if perms != 0444 {
		t.Errorf("Wrong permissions for gocryptfs.diriv: %#o", perms)
	}
}

// Test -init with -devrandom flag
func TestInitDevRandom(t *testing.T) {
	test_helpers.InitFS(t, "-devrandom")
}

// Test -init with -aessiv
func TestInitAessiv(t *testing.T) {
	dir := test_helpers.InitFS(t, "-aessiv")
	_, c, err := configfile.LoadAndDecrypt(dir+"/"+configfile.ConfDefaultName, testPw)
	if err != nil {
		t.Fatal(err)
	}
	if !c.IsFeatureFlagSet(configfile.FlagAESSIV) {
		t.Error("AESSIV flag should be set but is not")
	}
}

// Test -init with -reverse
func TestInitReverse(t *testing.T) {
	dir := test_helpers.InitFS(t, "-reverse")
	_, c, err := configfile.LoadAndDecrypt(dir+"/"+configfile.ConfReverseName, testPw)
	if err != nil {
		t.Fatal(err)
	}
	if !c.IsFeatureFlagSet(configfile.FlagAESSIV) {
		t.Error("AESSIV flag should be set but is not")
	}
}

// testPasswd changes the password from "test" to "test" using
// the -extpass method, then from "test" to "newpasswd" using the
// stdin method.
func testPasswd(t *testing.T, dir string, extraArgs ...string) {
	// Change password using "-extpass"
	args := []string{"-q", "-passwd", "-extpass", "echo test"}
	args = append(args, extraArgs...)
	args = append(args, dir)
	cmd := exec.Command(test_helpers.GocryptfsBinary, args...)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	err := cmd.Run()
	if err != nil {
		t.Error(err)
	}
	// Change password using stdin
	args = []string{"-q", "-passwd"}
	args = append(args, extraArgs...)
	args = append(args, dir)
	cmd = exec.Command(test_helpers.GocryptfsBinary, args...)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	p, err := cmd.StdinPipe()
	if err != nil {
		t.Fatal(err)
	}
	err = cmd.Start()
	if err != nil {
		t.Error(err)
	}
	// Old password
	p.Write([]byte("test\n"))
	// New password
	p.Write([]byte("newpasswd\n"))
	p.Close()
	err = cmd.Wait()
	if err != nil {
		t.Error(err)
	}
}

// Test -passwd flag
func TestPasswd(t *testing.T) {
	// Create FS
	dir := test_helpers.InitFS(t)
	mnt := dir + ".mnt"
	// Add content
	test_helpers.MountOrFatal(t, dir, mnt, "-extpass", "echo test")
	file1 := mnt + "/file1"
	err := ioutil.WriteFile(file1, []byte("somecontent"), 0600)
	if err != nil {
		t.Fatal(err)
	}
	err = test_helpers.UnmountErr(mnt)
	if err != nil {
		t.Fatal(err)
	}
	// Change password to "newpasswd"
	testPasswd(t, dir)
	// Mount and verify
	test_helpers.MountOrFatal(t, dir, mnt, "-extpass", "echo newpasswd")
	content, err := ioutil.ReadFile(file1)
	if err != nil {
		t.Error(err)
	} else if string(content) != "somecontent" {
		t.Errorf("wrong content: %q", string(content))
	}
	err = test_helpers.UnmountErr(mnt)
	if err != nil {
		t.Fatal(err)
	}
}

// cp copies file at `src` to `dst`, overwriting
// `dst` if it already exists. Calls t.Fatal on failure.
func cp(t *testing.T, src string, dst string) {
	conf, err := ioutil.ReadFile(src)
	if err != nil {
		t.Fatal(err)
	}
	syscall.Unlink(dst)
	err = ioutil.WriteFile(dst, conf, 0600)
	if err != nil {
		t.Fatal(err)
	}
}

// Test -passwd with -masterkey
func TestPasswdMasterkey(t *testing.T) {
	// Create FS
	dir := test_helpers.InitFS(t)
	// Overwrite with config with known master key
	cp(t, "gocryptfs.conf.b9e5ba23", dir+"/gocryptfs.conf")
	// Add content
	mnt := dir + ".mnt"
	test_helpers.MountOrFatal(t, dir, mnt, "-extpass", "echo test")
	file1 := mnt + "/file1"
	err := ioutil.WriteFile(file1, []byte("somecontent"), 0600)
	if err != nil {
		t.Fatal(err)
	}
	test_helpers.UnmountPanic(mnt)
	// Change password using stdin
	args := []string{"-q", "-passwd", "-masterkey",
		"b9e5ba23-981a22b8-c8d790d8-627add29-f680513f-b7b7035f-d203fb83-21d82205"}
	args = append(args, dir)
	cmd := exec.Command(test_helpers.GocryptfsBinary, args...)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	p, err := cmd.StdinPipe()
	if err != nil {
		t.Fatal(err)
	}
	err = cmd.Start()
	if err != nil {
		t.Error(err)
	}
	// New password
	p.Write([]byte("newpasswd\n"))
	p.Close()
	err = cmd.Wait()
	if err != nil {
		t.Error(err)
	}
	// Mount and verify
	test_helpers.MountOrFatal(t, dir, mnt, "-extpass", "echo newpasswd")
	content, err := ioutil.ReadFile(file1)
	if err != nil {
		t.Error(err)
	} else if string(content) != "somecontent" {
		t.Errorf("wrong content: %q", string(content))
	}
	test_helpers.UnmountPanic(mnt)
}

// Test -passwd with -masterkey=stdin
func TestPasswdMasterkeyStdin(t *testing.T) {
	// Create FS
	dir := test_helpers.InitFS(t)
	// Overwrite with config with known master key
	cp(t, "gocryptfs.conf.b9e5ba23", dir+"/gocryptfs.conf")
	// Add content
	mnt := dir + ".mnt"
	test_helpers.MountOrFatal(t, dir, mnt, "-extpass", "echo test")
	file1 := mnt + "/file1"
	err := ioutil.WriteFile(file1, []byte("somecontent"), 0600)
	if err != nil {
		t.Fatal(err)
	}
	test_helpers.UnmountPanic(mnt)
	// Change password using stdin
	args := []string{"-q", "-passwd", "-masterkey=stdin"}
	args = append(args, dir)
	cmd := exec.Command(test_helpers.GocryptfsBinary, args...)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	p, err := cmd.StdinPipe()
	if err != nil {
		t.Fatal(err)
	}
	err = cmd.Start()
	if err != nil {
		t.Error(err)
	}
	// Masterkey
	p.Write([]byte("b9e5ba23-981a22b8-c8d790d8-627add29-f680513f-b7b7035f-d203fb83-21d82205\n"))
	// New password
	p.Write([]byte("newpasswd\n"))
	p.Close()
	err = cmd.Wait()
	if err != nil {
		t.Fatal(err)
	}
	// Mount and verify
	test_helpers.MountOrFatal(t, dir, mnt, "-extpass", "echo newpasswd")
	content, err := ioutil.ReadFile(file1)
	if err != nil {
		t.Fatal(err)
	} else if string(content) != "somecontent" {
		t.Errorf("wrong content: %q", string(content))
	}
	test_helpers.UnmountPanic(mnt)
}

// Test -passwd with -reverse
func TestPasswdReverse(t *testing.T) {
	// Create FS
	dir := test_helpers.InitFS(t, "-reverse")
	testPasswd(t, dir, "-reverse")
}

// Test -passwd with -scryptn
func TestPasswdScryptn(t *testing.T) {
	dir := test_helpers.InitFS(t)
	cf, err := configfile.Load(dir + "/gocryptfs.conf")
	if err != nil {
		t.Fatal(err)
	}
	testPasswd(t, dir, "-scryptn", strconv.Itoa(cf.ScryptObject.LogN()+1))
	cf2, err := configfile.Load(dir + "/gocryptfs.conf")
	if err != nil {
		t.Fatal(err)
	}
	if cf2.ScryptObject.LogN() != cf.ScryptObject.LogN()+1 {
		t.Errorf("wrong logN value %d", cf2.ScryptObject.LogN())
	}
}

// Test -init & -config flag
func TestInitConfig(t *testing.T) {
	config := test_helpers.TmpDir + "/TestInitConfig.conf"
	dir := test_helpers.InitFS(t, "-config="+config)

	_, err := os.Stat(config)
	if err != nil {
		t.Fatal(err)
	}

	// Test -passwd & -config
	cmd2 := exec.Command(test_helpers.GocryptfsBinary, "-q", "-passwd", "-extpass", "echo test",
		"-config", config, dir)
	cmd2.Stdout = os.Stdout
	cmd2.Stderr = os.Stderr
	err = cmd2.Run()
	if err != nil {
		t.Error(err)
	}
}

// Test -ro
func TestRo(t *testing.T) {
	dir := test_helpers.InitFS(t)
	mnt := dir + ".mnt"
	test_helpers.MountOrFatal(t, dir, mnt, "-ro", "-extpass=echo test")
	defer test_helpers.UnmountPanic(mnt)

	file := mnt + "/file"
	err := os.Mkdir(file, 0777)
	if err == nil {
		t.Errorf("Mkdir should have failed")
	}
	_, err = os.Create(file)
	if err == nil {
		t.Errorf("Create should have failed")
	}
}

// Test "-nonempty"
func TestNonempty(t *testing.T) {
	dir := test_helpers.InitFS(t)
	mnt := dir + ".mnt"
	err := os.Mkdir(mnt, 0700)
	if err != nil {
		t.Fatal(err)
	}
	err = ioutil.WriteFile(mnt+"/somefile", []byte("xyz"), 0600)
	if err != nil {
		t.Fatal(err)
	}
	err = test_helpers.Mount(dir, mnt, false, "-extpass=echo test")
	if err == nil {
		t.Errorf("Mounting over a file should fail per default")
	}
	// Should work with "-nonempty"
	test_helpers.MountOrFatal(t, dir, mnt, "-nonempty", "-extpass=echo test")
	test_helpers.UnmountPanic(mnt)
}

// -nofail should be ignored and the mount should succeed
func TestNofail(t *testing.T) {
	dir := test_helpers.InitFS(t)
	mnt := dir + ".mnt"
	test_helpers.MountOrFatal(t, dir, mnt, "-nofail", "-extpass=echo test")
	defer test_helpers.UnmountPanic(mnt)
}

// Test "mountpoint shadows cipherdir" handling
func TestShadows(t *testing.T) {
	mnt := test_helpers.InitFS(t)
	cipher := mnt + ".cipher"
	err := os.Rename(mnt, cipher)
	if err != nil {
		t.Fatal(err)
	}
	// This should work
	// (note that MountOrFatal creates "mnt" again)
	test_helpers.MountOrFatal(t, cipher, mnt, "-extpass=echo test")
	test_helpers.UnmountPanic(mnt)
	cipher2 := mnt + "/cipher"
	err = os.Rename(cipher, cipher2)
	if err != nil {
		t.Fatal(err)
	}
	// This should fail
	err = test_helpers.Mount(cipher2, mnt, false, "-extpass=echo test")
	if err == nil {
		t.Errorf("Should have failed")
	}
}

// TestMountPasswordIncorrect makes sure the correct exit code is used when the password
// was incorrect while mounting
func TestMountPasswordIncorrect(t *testing.T) {
	cDir := test_helpers.InitFS(t) // Create filesystem with password "test"
	pDir := cDir + ".mnt"
	err := test_helpers.Mount(cDir, pDir, false, "-extpass", "echo WRONG", "-wpanic=false")
	exitCode := test_helpers.ExtractCmdExitCode(err)
	if exitCode != exitcodes.PasswordIncorrect {
		t.Errorf("want=%d, got=%d", exitcodes.PasswordIncorrect, exitCode)
	}
}

// TestPasswdPasswordIncorrect makes sure the correct exit code is used when the password
// was incorrect while changing the password
func TestPasswdPasswordIncorrect(t *testing.T) {
	cDir := test_helpers.InitFS(t) // Create filesystem with password "test"
	// Change password
	cmd := exec.Command(test_helpers.GocryptfsBinary, "-passwd", cDir)
	childStdin, err := cmd.StdinPipe()
	if err != nil {
		t.Fatal(err)
	}
	err = cmd.Start()
	if err != nil {
		t.Fatal(err)
	}
	_, err = childStdin.Write([]byte("WRONGPASSWORD\nNewPassword"))
	if err != nil {
		t.Fatal(err)
	}
	err = childStdin.Close()
	if err != nil {
		t.Fatal(err)
	}
	err = cmd.Wait()
	exitCode := test_helpers.ExtractCmdExitCode(err)
	if exitCode != exitcodes.PasswordIncorrect {
		t.Errorf("want=%d, got=%d", exitcodes.PasswordIncorrect, exitCode)
	}
}

// Check that we correctly background on mount and close stderr and stdout.
// Something like
//   gocryptfs a b | cat
// must not hang ( https://github.com/rfjakob/gocryptfs/issues/130 ).
func TestMountBackground(t *testing.T) {
	dir := test_helpers.InitFS(t)
	mnt := dir + ".mnt"
	err := os.Mkdir(mnt, 0700)
	if err != nil {
		t.Fatal(err)
	}
	// Manually create a pipe pair and connect the child's stdout and stderr
	// to it. We cannot use StdoutPipe because that will close the pipe
	// when the child forks away.
	pr, pw, err := os.Pipe()
	if err != nil {
		t.Fatal(err)
	}
	args := []string{"-extpass", "echo test", dir, mnt}
	cmd := exec.Command(test_helpers.GocryptfsBinary, args...)
	cmd.Stdout = pw
	cmd.Stderr = pw
	err = cmd.Run()
	if err != nil {
		t.Error(err)
	}
	pw.Close()
	defer test_helpers.UnmountPanic(mnt)
	// Read until we get EOF.
	c1 := make(chan struct{}, 1)
	go func() {
		buf := make([]byte, 1000)
		for {
			_, err = pr.Read(buf)
			// We should get io.EOF when the child closes stdout
			// and stderr.
			if err != nil {
				pr.Close()
				c1 <- struct{}{}
				return
			}
		}
	}()
	select {
	case <-c1:
		return
	case <-time.After(time.Second * 5):
		t.Fatal("timeout")
	}
}

// Test that "gocryptfs -init -info CIPHERDIR" returns an error to the
// user. Only one operation flag is allowed.
func TestMultipleOperationFlags(t *testing.T) {
	// Test all combinations
	opFlags := []string{"-init", "-info", "-passwd", "-fsck"}
	for _, flag1 := range opFlags {
		var flag2 string
		for _, flag2 = range opFlags {
			if flag1 == flag2 {
				continue
			}
			args := []string{flag1, flag2, "/tmp"}
			//t.Logf("testing %v", args)
			cmd := exec.Command(test_helpers.GocryptfsBinary, args...)
			err := cmd.Run()
			exitCode := test_helpers.ExtractCmdExitCode(err)
			if exitCode != exitcodes.Usage {
				t.Fatalf("this should have failed with code %d, but returned %d",
					exitcodes.Usage, exitCode)
			}
		}
	}
}

func TestNoexec(t *testing.T) {
	dir := test_helpers.InitFS(t)
	mnt := dir + ".mnt"
	err := os.Mkdir(mnt, 0700)
	if err != nil {
		t.Fatal(err)
	}
	test_helpers.MountOrFatal(t, dir, mnt, "-extpass=echo test", "-noexec")
	defer test_helpers.UnmountPanic(mnt)
	sh := mnt + "/x.sh"
	content := `#!/bin/bash
echo hello
`
	err = ioutil.WriteFile(sh, []byte(content), 0755)
	if err != nil {
		t.Fatal(err)
	}
	err = exec.Command(sh).Run()
	exitCode := test_helpers.ExtractCmdExitCode(err)
	if exitCode != int(syscall.EACCES) {
		t.Errorf("got exitcode %d instead of EPERM (%d)", exitCode, syscall.EPERM)
	}
}

// Test that a missing argument to "-o" triggers exit code 1.
// See also cli_args_test.go for comprehensive tests of "-o" parsing.
func TestMissingOArg(t *testing.T) {
	cmd := exec.Command(test_helpers.GocryptfsBinary, "foo", "bar", "-o")
	err := cmd.Run()
	exitCode := test_helpers.ExtractCmdExitCode(err)
	if exitCode != exitcodes.Usage {
		t.Fatalf("this should have failed with code %d, but returned %d",
			exitcodes.Usage, exitCode)
	}
}

// -exclude must return an error in forward mode
func TestExcludeForward(t *testing.T) {
	dir := test_helpers.InitFS(t)
	mnt := dir + ".mnt"
	err := test_helpers.Mount(dir, mnt, false, "-extpass", "echo test", "-exclude", "foo")
	if err == nil {
		t.Errorf("-exclude in forward mode should fail")
	}
	t.Log(err)
}

// Check that the config file can be read from a named pipe.
// Make sure bug https://github.com/rfjakob/gocryptfs/issues/258 does not come
// back.
func TestConfigPipe(t *testing.T) {
	dir := test_helpers.InitFS(t)
	mnt := dir + ".mnt"
	err := os.Mkdir(mnt, 0700)
	if err != nil {
		t.Fatal(err)
	}
	bashLine := fmt.Sprintf("%s -q -extpass \"echo test\" -config <(cat %s/gocryptfs.conf) %s %s", test_helpers.GocryptfsBinary, dir, dir, mnt)
	cmd := exec.Command("bash", "-c", bashLine)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stdout
	err = cmd.Run()
	exitCode := test_helpers.ExtractCmdExitCode(err)
	if exitCode != 0 {
		t.Errorf("bash command\n%q\nresulted in exit code %d", bashLine, exitCode)
		return
	}
	test_helpers.UnmountPanic(mnt)
}

// Ciphertext dir and mountpoint contains a comma
// https://github.com/rfjakob/gocryptfs/issues/262
func TestComma(t *testing.T) {
	dir0 := test_helpers.InitFS(t)
	dir := dir0 + ",foo,bar"
	err := os.Rename(dir0, dir)
	if err != nil {
		t.Fatal(err)
	}
	mnt := dir + ".mnt"
	err = test_helpers.Mount(dir, mnt, false, "-extpass", "echo test", "-wpanic=0")
	if err != nil {
		t.Fatalf("Failed to mount %q on %q: %v", dir, mnt, err)
	}
	test_helpers.UnmountPanic(mnt)
}

// Mount with idle timeout 10ms and check that the process exits by itself
// within 5 seconds.
func TestIdle(t *testing.T) {
	dir := test_helpers.InitFS(t)
	mnt := dir + ".mnt"
	err := os.Mkdir(mnt, 0700)
	if err != nil {
		t.Fatal(err)
	}
	cmd := exec.Command(test_helpers.GocryptfsBinary,
		"-q", "-nosyslog", "-fg", "-extpass", "echo test", "-i", "10ms", dir, mnt)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	err = cmd.Start()
	if err != nil {
		t.Fatal(err)
	}
	timer := time.AfterFunc(5*time.Second, func() {
		t.Error("timeout waiting for umount")
		cmd.Process.Kill()
	})
	err = cmd.Wait()
	timer.Stop()
	if err != nil {
		t.Error(err)
	}
}

// Mount with idle timeout of 100ms read something every 10ms. The fs should
// NOT get unmounted. Regression test for https://github.com/rfjakob/gocryptfs/issues/421
func TestNotIdle(t *testing.T) {
	dir := test_helpers.InitFS(t)
	mnt := dir + ".mnt"
	err := os.Mkdir(mnt, 0700)
	if err != nil {
		t.Fatal(err)
	}
	err = test_helpers.Mount(dir, mnt, false, "-extpass", "echo test", "-i=100ms")
	if err != nil {
		t.Fatal(err)
	}
	err = ioutil.WriteFile(mnt+"/foo", []byte("foo"), 0600)
	if err != nil {
		t.Fatal(err)
	}
	// Read every 10 milliseconds for a total of 1 second
	for i := 1; i < 100; i++ {
		_, err = ioutil.ReadFile(mnt + "/foo")
		if err != nil {
			t.Fatalf("iteration %d failed: %v", i, err)
		}
		time.Sleep(10 * time.Millisecond)
	}
	// Keep a file handle open for 1 second
	fd, err := os.Open(mnt + "/foo")
	if err != nil {
		t.Fatal(err)
	}
	time.Sleep(1 * time.Second)
	buf := make([]byte, 100)
	_, err = fd.Read(buf)
	if err != nil {
		t.Fatal(err)
	}
	fd.Close()
	// All good.
	test_helpers.UnmountPanic(mnt)
}

// TestSymlinkedCipherdir checks that if CIPHERDIR itself is a symlink, it is
// followed.
// https://github.com/rfjakob/gocryptfs/issues/450
func TestSymlinkedCipherdir(t *testing.T) {
	dir := test_helpers.InitFS(t)
	dirSymlink := dir + ".symlink"
	err := os.Symlink(dir, dirSymlink)
	if err != nil {
		t.Fatal(err)
	}
	mnt := dir + ".mnt"
	test_helpers.MountOrFatal(t, dirSymlink, mnt, "-extpass=echo test")
	defer test_helpers.UnmountPanic(mnt)

	file := mnt + "/file"
	f, err := os.Create(file)
	if err != nil {
		t.Fatal(err)
	}
	f.Close()

	f, err = os.Open(mnt)
	if err != nil {
		t.Fatal(err)
	}
	defer f.Close()
	names, err := f.Readdirnames(0)
	if err != nil {
		t.Fatal(err)
	}
	if len(names) != 1 || names[0] != "file" {
		t.Errorf("wrong Readdirnames result: %v", names)
	}
}

// TestBadname tests the `-badname` option
func TestBadname(t *testing.T) {
	dir := test_helpers.InitFS(t)
	mnt := dir + ".mnt"
	validFileName := "file"
	invalidSuffix := ".invalid_file"

	// use static suffix for testing
	test_helpers.MountOrFatal(t, dir, mnt, "-badname=*", "-extpass=echo test")
	defer test_helpers.UnmountPanic(mnt)

	// write one valid filename (empty content)
	file := mnt + "/" + validFileName
	err := ioutil.WriteFile(file, nil, 0600)
	if err != nil {
		t.Fatal(err)
	}

	// read encrypted file name
	fread, err := os.Open(dir)
	if err != nil {
		t.Fatal(err)
	}
	defer fread.Close()

	encryptedfilename := ""
	ciphernames, err := fread.Readdirnames(0)
	if err != nil {
		t.Fatal(err)
	}
	for _, ciphername := range ciphernames {
		if ciphername != "gocryptfs.conf" && ciphername != "gocryptfs.diriv" {
			encryptedfilename = ciphername
			// found cipher name of "file"
			break
		}
	}

	// write invalid file which should be decodable
	err = ioutil.WriteFile(dir+"/"+encryptedfilename+invalidSuffix, nil, 0600)
	if err != nil {
		t.Fatal(err)
	}
	// write invalid file which is not decodable (cropping the encrpyted file name)
	err = ioutil.WriteFile(dir+"/"+encryptedfilename[:len(encryptedfilename)-2]+invalidSuffix, nil, 0600)
	if err != nil {
		t.Fatal(err)
	}

	// check for filenames
	f, err := os.Open(mnt)
	if err != nil {
		t.Fatal(err)
	}
	defer f.Close()
	names, err := f.Readdirnames(0)
	if err != nil {
		t.Fatal(err)
	}
	foundDecodable := false
	foundUndecodable := false
	for _, name := range names {
		if strings.Contains(name, validFileName+invalidSuffix+" GOCRYPTFS_BAD_NAME") {
			foundDecodable = true
		} else if strings.Contains(name, encryptedfilename[:len(encryptedfilename)-2]+invalidSuffix+" GOCRYPTFS_BAD_NAME") {
			foundUndecodable = true
		}
	}

	if !foundDecodable {
		t.Errorf("did not find invalid name %s in %v", validFileName+invalidSuffix+" GOCRYPTFS_BAD_NAME", names)
	}

	if !foundUndecodable {
		t.Errorf("did not find invalid name %s in %v", encryptedfilename[:len(encryptedfilename)-2]+invalidSuffix+" GOCRYPTFS_BAD_NAME", names)
	}
}

// TestPassfile tests the `-passfile` option
func TestPassfile(t *testing.T) {
	dir := test_helpers.InitFS(t)
	mnt := dir + ".mnt"
	passfile1 := mnt + ".1.txt"
	ioutil.WriteFile(passfile1, []byte("test"), 0600)
	test_helpers.MountOrFatal(t, dir, mnt, "-passfile="+passfile1)
	defer test_helpers.UnmountPanic(mnt)
}

// TestPassfileX2 tests that the `-passfile` option can be passed twice
func TestPassfileX2(t *testing.T) {
	dir := test_helpers.InitFS(t)
	mnt := dir + ".mnt"
	passfile1 := mnt + ".1.txt"
	passfile2 := mnt + ".2.txt"
	ioutil.WriteFile(passfile1, []byte("te"), 0600)
	ioutil.WriteFile(passfile2, []byte("st"), 0600)
	test_helpers.MountOrFatal(t, dir, mnt, "-passfile="+passfile1, "-passfile="+passfile2)
	defer test_helpers.UnmountPanic(mnt)
}

// TestInitNotEmpty checks that `gocryptfs -init` returns the right error code
// if CIPHERDIR is not empty. See https://github.com/rfjakob/gocryptfs/pull/503
func TestInitNotEmpty(t *testing.T) {
	dir := test_helpers.TmpDir + "/" + t.Name()
	if err := os.Mkdir(dir, 0700); err != nil {
		t.Fatal(err)
	}
	if err := ioutil.WriteFile(dir+"/foo", nil, 0700); err != nil {
		t.Fatal(err)
	}
	cmd := exec.Command(test_helpers.GocryptfsBinary, "-init", "-extpass", "echo test", dir)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	err := cmd.Run()
	exitCode := test_helpers.ExtractCmdExitCode(err)
	if exitCode != exitcodes.CipherDir {
		t.Fatalf("wrong exit code: have=%d, want=%d", exitCode, exitcodes.CipherDir)
	}
}