Exemple #1
0
// Test -init -plaintextnames
func TestInitPlaintextNames(t *testing.T) {
	dir := tmpDir + "TestInitPlaintextNames/"
	err := os.Mkdir(dir, 0777)
	if err != nil {
		t.Fatal(err)
	}
	cmd := exec.Command(gocryptfsBinary, "-init", "-extpass", "echo test",
		"-scryptn=10", "-plaintextnames", dir)
	if testing.Verbose() {
		cmd.Stdout = os.Stdout
		cmd.Stderr = os.Stderr
	}
	err = cmd.Run()
	if err != nil {
		t.Fatal(err)
	}
	_, err = os.Stat(dir + cryptfs.ConfDefaultName)
	if err != nil {
		t.Fatal(err)
	}
	_, err = os.Stat(dir + cryptfs.DIRIV_FILENAME)
	if err == nil {
		t.Errorf("gocryptfs.diriv should not have been created with -plaintextnames")
	}
	_, cf, err := cryptfs.LoadConfFile(dir+cryptfs.ConfDefaultName, "test")
	if err != nil {
		t.Fatal(err)
	}
	if !cf.IsFeatureFlagSet(cryptfs.FlagPlaintextNames) {
		t.Error("PlaintextNames flag should be set but isnt")
	}
	if cf.IsFeatureFlagSet(cryptfs.FlagEMENames) || cf.IsFeatureFlagSet(cryptfs.FlagDirIV) {
		t.Error("FlagEMENames and FlagDirIV should be not set")
	}
}
Exemple #2
0
// loadConfig - load the config file "filename", prompting the user for the password
func loadConfig(args *argContainer) (masterkey []byte, confFile *cryptfs.ConfFile) {
	// Check if the file exists at all before prompting for a password
	_, err := os.Stat(args.config)
	if err != nil {
		fmt.Println(err)
		os.Exit(ERREXIT_LOADCONF)
	}
	fmt.Printf("Password: "******"Decrypting master key... ")
	cryptfs.Warn.Disable() // Silence DecryptBlock() error messages on incorrect password
	masterkey, confFile, err = cryptfs.LoadConfFile(args.config, pw)
	cryptfs.Warn.Enable()
	if err != nil {
		fmt.Println(err)
		fmt.Println(colorRed + "Wrong password." + colorReset)
		os.Exit(ERREXIT_LOADCONF)
	}
	cryptfs.Info.Printf("done.\n")

	return masterkey, confFile
}
Exemple #3
0
func main() {
	runtime.GOMAXPROCS(4)

	// Parse command line arguments
	var debug, init, zerokey, fusedebug, openssl, passwd, foreground, version bool
	var masterkey, mountpoint, cipherdir string

	flag.Usage = usageText
	flag.BoolVar(&debug, "debug", false, "Enable debug output")
	flag.BoolVar(&fusedebug, "fusedebug", false, "Enable fuse library debug output")
	flag.BoolVar(&init, "init", false, "Initialize encrypted directory")
	flag.BoolVar(&zerokey, "zerokey", false, "Use all-zero dummy master key")
	flag.BoolVar(&openssl, "openssl", true, "Use OpenSSL instead of built-in Go crypto")
	flag.BoolVar(&passwd, "passwd", false, "Change password")
	flag.BoolVar(&foreground, "f", false, "Stay in the foreground")
	flag.BoolVar(&version, "version", false, "Print version and exit")
	flag.StringVar(&masterkey, "masterkey", "", "Mount with explicit master key")
	var cpuprofile = flag.String("cpuprofile", "", "Write cpu profile to specified file")

	flag.Parse()
	if version {
		fmt.Printf("%s %s; ", PROGRAM_NAME, GitVersion)
		fmt.Printf("on-disk format %d\n", cryptfs.HEADER_CURRENT_VERSION)
		os.Exit(0)
	}
	if !foreground {
		daemonize() // does not return
	}
	if *cpuprofile != "" {
		f, err := os.Create(*cpuprofile)
		if err != nil {
			fmt.Println(err)
			os.Exit(ERREXIT_INIT)
		}
		fmt.Printf("Writing CPU profile to %s\n", *cpuprofile)
		pprof.StartCPUProfile(f)
		defer pprof.StopCPUProfile()
	}
	if debug {
		cryptfs.Debug.Enable()
		cryptfs.Debug.Printf("Debug output enabled\n")
	}
	if openssl == false {
		fmt.Printf("Openssl disabled\n")
	}
	if init {
		if flag.NArg() != 1 {
			fmt.Printf("Usage: %s --init CIPHERDIR\n", PROGRAM_NAME)
			os.Exit(ERREXIT_USAGE)
		}
		initDir(flag.Arg(0)) // does not return
	}
	if passwd {
		if flag.NArg() != 1 {
			fmt.Printf("Usage: %s --passwd CIPHERDIR\n", PROGRAM_NAME)
			os.Exit(ERREXIT_USAGE)
		}
	} else {
		// Normal mount
		if flag.NArg() < 2 {
			usageText()
			os.Exit(ERREXIT_USAGE)
		}
		mountpoint, _ = filepath.Abs(flag.Arg(1))
		err := checkDirEmpty(mountpoint)
		if err != nil {
			fmt.Printf("Invalid MOUNTPOINT: %v\n", err)
			os.Exit(ERREXIT_MOUNTPOINT)
		}
	}
	cipherdir, _ = filepath.Abs(flag.Arg(0))
	err := checkDir(cipherdir)
	if err != nil {
		fmt.Printf("Invalid CIPHERDIR: %v\n", err)
		os.Exit(ERREXIT_CIPHERDIR)
	}

	var cf *cryptfs.ConfFile
	var currentPassword string
	key := make([]byte, cryptfs.KEY_LEN)
	if zerokey {
		fmt.Printf("Zerokey mode active: using all-zero dummy master key.\n")
	} else if len(masterkey) > 0 {
		key = parseMasterKey(masterkey)
		fmt.Printf("Using explicit master key.\n")
	} else {
		cfname := filepath.Join(cipherdir, cryptfs.ConfDefaultName)
		_, err = os.Stat(cfname)
		if err != nil {
			fmt.Printf("Error: %s not found in CIPHERDIR\n", cryptfs.ConfDefaultName)
			fmt.Printf("Please run \"%s --init %s\" first\n", os.Args[0], flag.Arg(0))
			os.Exit(ERREXIT_LOADCONF)
		}
		if passwd == true {
			fmt.Printf("Old password: "******"Password: "******"\nDecrypting master key... ")
		cryptfs.Warn.Disable() // Silence DecryptBlock() error messages on incorrect password
		key, cf, err = cryptfs.LoadConfFile(cfname, currentPassword)
		cryptfs.Warn.Enable()
		if err != nil {
			fmt.Println(err)
			os.Exit(ERREXIT_LOADCONF)
		}
		fmt.Printf("done.\n")
	}
	if passwd == true {
		fmt.Printf("Please enter the new password.\n")
		newPassword := readPasswordTwice()
		if newPassword == currentPassword {
			fmt.Printf("New and old passwords are identical\n")
			os.Exit(ERREXIT_PASSWORD)
		}
		cf.EncryptKey(key, newPassword)
		err := cf.WriteFile()
		if err != nil {
			fmt.Println(err)
			os.Exit(ERREXIT_INIT)
		}
		fmt.Printf("Password changed.\n")
		os.Exit(0)
	}

	srv := pathfsFrontend(key, cipherdir, mountpoint, fusedebug, openssl)

	if zerokey == false && len(masterkey) == 0 {
		printMasterKey(key)
	} else if zerokey == true {
		fmt.Printf("ZEROKEY MODE PROVIDES NO SECURITY AT ALL AND SHOULD ONLY BE USED FOR TESTING.\n")
	} else if len(masterkey) > 0 {
		fmt.Printf("THE MASTER KEY IS VISIBLE VIA \"ps -auxwww\", ONLY USE THIS MODE FOR EMERGENCIES.\n")
	}

	fmt.Println("Filesystem ready.")
	// Send notification to our parent
	sendUsr1()
	// Wait for SIGING in the background and unmount ourselves if we get it
	// This prevents a dangling "Transport endpoint is not connected" mountpoint
	handleSigint(srv, mountpoint)
	// Jump into server loop. Returns when it gets an umount request from the kernel.
	srv.Serve()
	// main returns with code 0
}