tests: add example_filesystems, test password and -masterkey mount

integration_tests/example_filesystems/normal/gocryptfs.conf

@@ -0,0 +1,12 @@
+{
+	"EncryptedKey": "He757VFOKOWbMJqJ7HBs67SMSi3Vu8/2vgWNI6j1tVo4JBlNvrQSw6KkCh0lGrHrh6ICbPv4MyoyFdGa",
+	"ScryptObject": {
+		"Salt": "MeHSsxsnJwngAwptNzuXQlj7JtF1b0uzZuWvVV3cH3w=",
+		"N": 65536,
+		"R": 8,
+		"P": 1,
+		"KeyLen": 32
+	},
+	"Version": 2,
+	"FeatureFlags": null
+}

integration_tests/example_filesystems_test.go

@@ -0,0 +1,46 @@
+package integration_tests
+
+// Mount example filesystems and check that the file "status.txt" is there
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+)
+
+const statusTxtContent = "It works!\n"
+
+// checkStatusTxt - read file "filename" and verify that it contains
+// "It works!\n"
+func checkStatusTxt(t *testing.T, filename string) {
+	contentBytes, err := ioutil.ReadFile(filename)
+	if err != nil {
+		t.Error(err)
+	}
+	content := string(contentBytes)
+	if content != statusTxtContent {
+		t.Errorf("Unexpected content: %s\n", content)
+	}
+}
+
+// Test example_filesystems/normal
+// with password mount and -masterkey mount
+func TestExampleFsNormal(t *testing.T) {
+	pDir := tmpDir + "TestExampleFsNormal/"
+	cDir := "example_filesystems/normal"
+	err := os.Mkdir(pDir, 0777)
+	if err != nil {
+		t.Fatal(err)
+	}
+	mount(cDir, pDir, "-extpass", "echo test")
+	checkStatusTxt(t, pDir + "status.txt")
+	unmount(pDir)
+	mount(cDir, pDir, "-masterkey", "74676e34-0b47c145-00dac61a-17a92316-"+
+		"bb57044c-e205b71f-65f4fdca-7cabd4b3")
+	checkStatusTxt(t, pDir + "status.txt")
+	unmount(pDir)
+	err = os.Remove(pDir)
+	if err != nil {
+		t.Error(err)
+	}
+}

integration_tests/helpers.go

@@ -12,51 +12,63 @@ import (
 
 // Note: the code assumes that all have a trailing slash
 const tmpDir = "/tmp/gocryptfs_main_test/"
-const plainDir = tmpDir + "plain/"
-const cipherDir = tmpDir + "cipher/"
+const defaultPlainDir = tmpDir + "plain/"
+const defaultCipherDir = tmpDir + "cipher/"
 
 const gocryptfsBinary = "../gocryptfs"
 
 func resetTmpDir() {
-	fu := exec.Command("fusermount", "-z", "-u", plainDir)
+	fu := exec.Command("fusermount", "-z", "-u", defaultPlainDir)
 	fu.Run()
 
-	os.RemoveAll(tmpDir)
-
-	err := os.MkdirAll(plainDir, 0777)
+	err := os.RemoveAll(tmpDir)
 	if err != nil {
-		panic("Could not create plainDir")
+		fmt.Println(err)
+		os.Exit(1)
 	}
 
-	err = os.MkdirAll(cipherDir, 0777)
+	err = os.MkdirAll(defaultPlainDir, 0777)
 	if err != nil {
-		panic("Could not create cipherDir")
-	}
+		fmt.Println(err)
+		os.Exit(1)
 	}
 
-func mount(extraArgs ...string) {
-	var args []string
-	args = append(args, extraArgs...)
-	//args = append(args, "--fusedebug")
-	args = append(args, cipherDir)
-	args = append(args, plainDir)
-	c := exec.Command(gocryptfsBinary, args...)
-	if testing.Verbose() {
-		c.Stdout = os.Stdout
-		c.Stderr = os.Stderr
-	}
-	err := c.Run()
+	err = os.MkdirAll(defaultCipherDir, 0777)
 	if err != nil {
 		fmt.Println(err)
 		os.Exit(1)
 	}
 }
 
-func unmount() error {
-	fu := exec.Command("fusermount", "-z", "-u", plainDir)
+// mount CIPHERDIR "c" on PLAINDIR "p"
+func mount(c string, p string, extraArgs ...string) {
+	var args []string
+	args = append(args, extraArgs...)
+	//args = append(args, "--fusedebug")
+	args = append(args, c)
+	args = append(args, p)
+	cmd := exec.Command(gocryptfsBinary, args...)
+	if testing.Verbose() {
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+	}
+	err := cmd.Run()
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+}
+
+// unmount PLAINDIR "p"
+func unmount(p string) error {
+	fu := exec.Command("fusermount", "-u", "-z", p)
 	fu.Stdout = os.Stdout
 	fu.Stderr = os.Stderr
-	return fu.Run()
+	err := fu.Run()
+	if err != nil {
+		fmt.Println(err)
+	}
+	return err
 }
 
 // Return md5 string for file "filename"

integration_tests/main_test.go

@@ -25,9 +25,9 @@ func TestMain(m *testing.M) {
 		fmt.Printf("***** Testing with OpenSSL\n")
 	}
 	resetTmpDir()
-	mount("--zerokey")
+	mount(defaultCipherDir, defaultPlainDir, "--zerokey")
 	r := m.Run()
-	unmount()
+	unmount(defaultPlainDir)
 
 	if defaultonly {
 		os.Exit(r)
@@ -37,25 +37,25 @@ func TestMain(m *testing.M) {
 		fmt.Printf("***** Testing with native Go crypto\n")
 	}
 	resetTmpDir()
-	mount("--zerokey", "--openssl=false")
+	mount(defaultCipherDir, defaultPlainDir, "--zerokey", "--openssl=false")
 	r = m.Run()
-	unmount()
+	unmount(defaultPlainDir)
 
 	if testing.Verbose() {
 		fmt.Printf("***** Testing \"--plaintextnames\"\n")
 	}
 	resetTmpDir()
-	mount("--zerokey", "--plaintextnames")
+	mount(defaultCipherDir, defaultPlainDir, "--zerokey", "--plaintextnames")
 	plaintextNames = true
 	r = m.Run()
-	unmount()
+	unmount(defaultPlainDir)
 
 	os.Exit(r)
 }
 
 // Write "n" zero bytes to filename "fn", read again, compare hash
 func testWriteN(t *testing.T, fn string, n int) string {
-	file, err := os.Create(plainDir + fn)
+	file, err := os.Create(defaultPlainDir + fn)
 	if err != nil {
 		t.FailNow()
 	}
@@ -68,12 +68,12 @@ func testWriteN(t *testing.T, fn string, n int) string {
 	}
 	file.Close()
 
-	verifySize(t, plainDir+fn, n)
+	verifySize(t, defaultPlainDir+fn, n)
 
 	bin := md5.Sum(d)
 	hashWant := hex.EncodeToString(bin[:])
 
-	hashActual := md5fn(plainDir + fn)
+	hashActual := md5fn(defaultPlainDir + fn)
 
 	if hashActual != hashWant {
 		t.Errorf("Wrong content, hashWant=%s hashActual=%s\n", hashWant, hashActual)
@@ -99,7 +99,7 @@ func TestWrite1Mx100(t *testing.T) {
 	// Read and check 100 times to catch race conditions
 	var i int
 	for i = 0; i < 100; i++ {
-		hashActual := md5fn(plainDir + "1M")
+		hashActual := md5fn(defaultPlainDir + "1M")
 		if hashActual != hashWant {
 			fmt.Printf("Read corruption in loop # %d\n", i)
 			t.FailNow()
@@ -110,7 +110,7 @@ func TestWrite1Mx100(t *testing.T) {
 }
 
 func TestTruncate(t *testing.T) {
-	fn := plainDir + "truncate"
+	fn := defaultPlainDir + "truncate"
 	file, err := os.Create(fn)
 	if err != nil {
 		t.FailNow()
@@ -142,7 +142,7 @@ func TestTruncate(t *testing.T) {
 }
 
 func TestAppend(t *testing.T) {
-	fn := plainDir + "append"
+	fn := defaultPlainDir + "append"
 	file, err := os.Create(fn)
 	if err != nil {
 		t.FailNow()
@@ -176,7 +176,7 @@ func TestAppend(t *testing.T) {
 // Create a file with holes by writing to offset 0 (block #0) and
 // offset 4096 (block #1).
 func TestFileHoles(t *testing.T) {
-	fn := plainDir + "fileholes"
+	fn := defaultPlainDir + "fileholes"
 	file, err := os.Create(fn)
 	if err != nil {
 		t.Errorf("file create failed")
@@ -203,7 +203,7 @@ func TestRmwRace(t *testing.T) {
 
 	runtime.GOMAXPROCS(10)
 
-	fn := plainDir + "rmwrace"
+	fn := defaultPlainDir + "rmwrace"
 	f1, err := os.Create(fn)
 	if err != nil {
 		t.Fatalf("file create failed")
@@ -274,7 +274,7 @@ func TestRmwRace(t *testing.T) {
 // With "--plaintextnames", the name "/gocryptfs.conf" is reserved.
 // Otherwise there should be no restrictions.
 func TestFiltered(t *testing.T) {
-	filteredFile := plainDir + "gocryptfs.conf"
+	filteredFile := defaultPlainDir + "gocryptfs.conf"
 	file, err := os.Create(filteredFile)
 	if plaintextNames == true && err == nil {
 		t.Errorf("should have failed but didn't")
@@ -292,13 +292,13 @@ func TestFiltered(t *testing.T) {
 }
 
 func TestFilenameEncryption(t *testing.T) {
-	file, err := os.Create(plainDir + "TestFilenameEncryption.txt")
+	file, err := os.Create(defaultPlainDir + "TestFilenameEncryption.txt")
 	file.Close()
 	if err != nil {
 		t.Fatal(err)
 	}
 
-	_, err = os.Stat(cipherDir + "TestFilenameEncryption.txt")
+	_, err = os.Stat(defaultCipherDir + "TestFilenameEncryption.txt")
 	if plaintextNames == true && err != nil {
 		t.Errorf("plaintextnames not working: %v", err)
 	} else if plaintextNames == false && err == nil {

integration_tests/performance_test.go

@@ -12,7 +12,7 @@ func BenchmarkStreamWrite(t *testing.B) {
 	buf := make([]byte, 1024*1024)
 	t.SetBytes(int64(len(buf)))
 
-	file, err := os.Create(plainDir + "BenchmarkWrite")
+	file, err := os.Create(defaultPlainDir + "BenchmarkWrite")
 	if err != nil {
 		t.FailNow()
 	}
@@ -33,7 +33,7 @@ func BenchmarkStreamRead(t *testing.B) {
 	buf := make([]byte, 1024*1024)
 	t.SetBytes(int64(len(buf)))
 
-	fn := plainDir + "BenchmarkWrite"
+	fn := defaultPlainDir + "BenchmarkWrite"
 	fi, err := os.Stat(fn)
 	if err != nil {
 		t.Fatal(err)
@@ -80,7 +80,7 @@ func BenchmarkStreamRead(t *testing.B) {
 
 // createFiles - create "count" files of size "size" bytes each
 func createFiles(t *testing.B, count int, size int) {
-	dir := fmt.Sprintf("%s/createFiles_%d_%d", plainDir, count, size)
+	dir := fmt.Sprintf("%s/createFiles_%d_%d", defaultPlainDir, count, size)
 	err := os.Mkdir(dir, 0777)
 	if err != nil {
 		t.Fatal(err)