2015-09-03 19:27:07 +02:00
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package main
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import (
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2016-01-20 20:55:56 +01:00
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"encoding/json"
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2015-09-06 11:42:01 +02:00
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"flag"
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2015-09-05 11:49:05 +02:00
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"fmt"
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2016-01-20 22:31:15 +01:00
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"log/syslog"
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2015-09-06 12:12:14 +02:00
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"os"
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2015-11-01 13:28:58 +01:00
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"os/exec"
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"os/signal"
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2015-09-06 12:12:14 +02:00
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"path/filepath"
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2015-09-16 19:35:40 +02:00
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"runtime"
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2015-10-04 14:36:20 +02:00
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"runtime/pprof"
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2016-05-11 23:36:57 +02:00
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"strconv"
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2016-06-04 14:24:48 +02:00
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"strings"
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2015-11-01 13:28:58 +01:00
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"syscall"
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2015-10-04 14:36:20 +02:00
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"time"
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2015-09-08 00:54:24 +02:00
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2015-12-19 15:46:19 +01:00
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"golang.org/x/crypto/ssh/terminal"
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2015-09-08 00:54:24 +02:00
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"github.com/hanwen/go-fuse/fuse"
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"github.com/hanwen/go-fuse/fuse/nodefs"
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"github.com/hanwen/go-fuse/fuse/pathfs"
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2016-02-06 19:20:54 +01:00
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"github.com/rfjakob/gocryptfs/internal/configfile"
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"github.com/rfjakob/gocryptfs/internal/contentenc"
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"github.com/rfjakob/gocryptfs/internal/cryptocore"
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2016-02-06 20:23:36 +01:00
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"github.com/rfjakob/gocryptfs/internal/fusefrontend"
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"github.com/rfjakob/gocryptfs/internal/nametransform"
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2016-05-11 23:36:57 +02:00
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"github.com/rfjakob/gocryptfs/internal/prefer_openssl"
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2016-02-06 20:23:36 +01:00
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"github.com/rfjakob/gocryptfs/internal/toggledlog"
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2015-09-03 19:27:07 +02:00
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)
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2015-09-05 11:49:05 +02:00
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const (
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2015-09-08 23:09:28 +02:00
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// Exit codes
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2015-10-11 18:51:56 +02:00
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ERREXIT_USAGE = 1
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ERREXIT_MOUNT = 3
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ERREXIT_CIPHERDIR = 6
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ERREXIT_INIT = 7
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ERREXIT_LOADCONF = 8
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ERREXIT_PASSWORD = 9
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2015-10-11 18:33:28 +02:00
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ERREXIT_MOUNTPOINT = 10
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2015-09-05 11:49:05 +02:00
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)
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2015-11-27 23:34:55 +01:00
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type argContainer struct {
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debug, init, zerokey, fusedebug, openssl, passwd, foreground, version,
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2016-02-06 22:54:14 +01:00
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plaintextnames, quiet, diriv, emenames, gcmiv128, nosyslog, wpanic,
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2016-05-16 23:59:26 +02:00
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longnames, allow_other bool
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2016-01-21 23:55:37 +01:00
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masterkey, mountpoint, cipherdir, cpuprofile, config, extpass,
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memprofile string
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notifypid, scryptn int
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2015-11-27 23:34:55 +01:00
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}
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var flagSet *flag.FlagSet
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2015-11-02 22:50:53 +01:00
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// GitVersion will be set by the build script "build.bash"
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2015-11-01 13:55:35 +01:00
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var GitVersion = "[version not set - please compile using ./build.bash]"
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2016-04-10 23:16:09 +02:00
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var GitVersionFuse = "[version not set - please compile using ./build.bash]"
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2015-11-01 13:55:35 +01:00
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2016-06-04 14:24:48 +02:00
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// initDir initializes an empty directory for use as a gocryptfs cipherdir.
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2015-11-14 21:25:10 +01:00
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func initDir(args *argContainer) {
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err := checkDirEmpty(args.cipherdir)
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2015-10-11 18:33:28 +02:00
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if err != nil {
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2016-06-05 14:26:16 +02:00
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toggledlog.Fatal.Printf("Invalid cipherdir: %v\n", err)
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2015-10-04 14:36:20 +02:00
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os.Exit(ERREXIT_INIT)
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}
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2015-09-14 22:56:59 +02:00
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2015-12-06 14:24:45 +01:00
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// Create gocryptfs.conf
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2016-06-04 15:11:18 +02:00
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if args.extpass == "" {
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toggledlog.Info.Printf("Choose a password for protecting your files.")
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} else {
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toggledlog.Info.Printf("Using password provided via -extpass.")
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}
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2015-12-06 14:24:45 +01:00
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password := readPasswordTwice(args.extpass)
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2016-06-05 11:33:54 +02:00
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creator := toggledlog.ProgramName + " " + GitVersion
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err = configfile.CreateConfFile(args.config, password, args.plaintextnames, args.scryptn, creator)
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2015-11-25 19:30:32 +01:00
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if err != nil {
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2016-06-05 14:26:16 +02:00
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toggledlog.Fatal.Println(err)
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2015-11-25 19:30:32 +01:00
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os.Exit(ERREXIT_INIT)
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}
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2015-12-10 01:12:05 +01:00
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if args.diriv && !args.plaintextnames {
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// Create gocryptfs.diriv in the root dir
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2016-02-06 19:20:54 +01:00
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err = nametransform.WriteDirIV(args.cipherdir)
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2015-12-10 01:12:05 +01:00
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if err != nil {
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2016-06-05 14:26:16 +02:00
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toggledlog.Fatal.Println(err)
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2015-12-10 01:12:05 +01:00
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os.Exit(ERREXIT_INIT)
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}
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2015-10-04 14:36:20 +02:00
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}
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2015-12-06 14:24:45 +01:00
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2016-02-06 19:20:54 +01:00
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toggledlog.Info.Printf(colorGreen + "The filesystem has been created successfully." + colorReset)
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2016-06-04 14:24:48 +02:00
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wd, _ := os.Getwd()
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friendlyPath, _ := filepath.Rel(wd, args.cipherdir)
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if strings.HasPrefix(friendlyPath, "../") {
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// A relative path that starts with "../" is pretty unfriendly, just
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// keep the absolute path.
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friendlyPath = args.cipherdir
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}
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2016-02-06 19:20:54 +01:00
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toggledlog.Info.Printf(colorGrey+"You can now mount it using: %s %s MOUNTPOINT"+colorReset,
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2016-06-04 14:24:48 +02:00
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toggledlog.ProgramName, friendlyPath)
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2015-10-04 14:36:20 +02:00
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os.Exit(0)
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2015-09-14 22:56:59 +02:00
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}
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2015-10-07 21:59:54 +02:00
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func usageText() {
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2015-11-14 21:25:10 +01:00
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printVersion()
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2016-06-05 14:26:16 +02:00
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fmt.Printf(`
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Usage: %s -init|-passwd [OPTIONS] CIPHERDIR
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or %s [OPTIONS] CIPHERDIR MOUNTPOINT
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Options:
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`, toggledlog.ProgramName, toggledlog.ProgramName)
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2015-11-09 23:11:38 +01:00
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flagSet.PrintDefaults()
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2015-10-07 21:59:54 +02:00
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}
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2015-11-14 21:25:10 +01:00
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// loadConfig - load the config file "filename", prompting the user for the password
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2016-02-06 19:20:54 +01:00
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func loadConfig(args *argContainer) (masterkey []byte, confFile *configfile.ConfFile) {
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2015-11-14 21:25:10 +01:00
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// Check if the file exists at all before prompting for a password
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2015-11-15 13:38:19 +01:00
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_, err := os.Stat(args.config)
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2015-11-14 21:25:10 +01:00
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if err != nil {
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2016-06-05 14:26:16 +02:00
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toggledlog.Fatal.Printf(colorRed+"Config file not found: %v\n"+colorReset, err)
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2015-11-14 21:25:10 +01:00
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os.Exit(ERREXIT_LOADCONF)
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}
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2016-01-23 20:18:39 +01:00
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if args.extpass == "" {
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2016-06-05 14:26:16 +02:00
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fmt.Fprintf(os.Stderr, "Password: ")
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2016-01-23 20:18:39 +01:00
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}
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2015-11-15 13:38:19 +01:00
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pw := readPassword(args.extpass)
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2016-02-06 19:20:54 +01:00
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toggledlog.Info.Printf("Decrypting master key... ")
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masterkey, confFile, err = configfile.LoadConfFile(args.config, pw)
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2015-11-14 21:25:10 +01:00
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if err != nil {
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2016-06-05 14:26:16 +02:00
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toggledlog.Fatal.Println(colorRed + err.Error() + colorReset)
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2015-11-14 21:25:10 +01:00
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os.Exit(ERREXIT_LOADCONF)
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}
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2016-02-06 19:20:54 +01:00
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toggledlog.Info.Printf("done.")
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2015-11-14 21:25:10 +01:00
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return masterkey, confFile
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}
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// changePassword - change the password of config file "filename"
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2015-11-15 13:38:19 +01:00
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func changePassword(args *argContainer) {
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masterkey, confFile := loadConfig(args)
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2016-06-05 14:26:16 +02:00
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toggledlog.Info.Println("Please enter your new password.")
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2015-11-15 13:38:19 +01:00
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newPw := readPasswordTwice(args.extpass)
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2015-11-29 18:52:58 +01:00
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confFile.EncryptKey(masterkey, newPw, confFile.ScryptObject.LogN())
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2015-11-14 21:25:10 +01:00
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err := confFile.WriteFile()
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if err != nil {
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2016-06-05 14:26:16 +02:00
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toggledlog.Fatal.Println(err)
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2015-11-14 21:25:10 +01:00
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os.Exit(ERREXIT_INIT)
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}
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2016-02-06 19:20:54 +01:00
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toggledlog.Info.Printf("Password changed.")
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2015-11-14 21:25:10 +01:00
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os.Exit(0)
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}
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// printVersion - print a version string like
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// "gocryptfs v0.3.1-31-g6736212-dirty; on-disk format 2"
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func printVersion() {
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2016-04-10 23:16:09 +02:00
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fmt.Printf("%s %s; on-disk format %d; go-fuse %s\n",
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toggledlog.ProgramName, GitVersion, contentenc.CurrentVersion, GitVersionFuse)
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2015-11-14 21:25:10 +01:00
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}
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2015-11-09 23:11:38 +01:00
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func main() {
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runtime.GOMAXPROCS(4)
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2015-11-14 21:25:10 +01:00
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var err error
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2015-11-27 23:34:55 +01:00
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var args argContainer
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2015-12-19 15:46:19 +01:00
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setupColors()
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2015-09-18 22:14:07 +02:00
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2015-11-09 23:11:38 +01:00
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// Parse command line arguments
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2016-05-11 23:36:57 +02:00
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var opensslAuto string
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2016-02-06 19:20:54 +01:00
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flagSet = flag.NewFlagSet(toggledlog.ProgramName, flag.ExitOnError)
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2015-11-09 23:11:38 +01:00
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flagSet.Usage = usageText
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2016-01-24 18:20:04 +01:00
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flagSet.BoolVar(&args.debug, "d", false, "")
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2015-11-09 23:11:38 +01:00
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flagSet.BoolVar(&args.debug, "debug", false, "Enable debug output")
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flagSet.BoolVar(&args.fusedebug, "fusedebug", false, "Enable fuse library debug output")
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flagSet.BoolVar(&args.init, "init", false, "Initialize encrypted directory")
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flagSet.BoolVar(&args.zerokey, "zerokey", false, "Use all-zero dummy master key")
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2016-05-16 23:59:26 +02:00
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// Tri-state true/false/auto
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2016-05-11 23:36:57 +02:00
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flagSet.StringVar(&opensslAuto, "openssl", "auto", "Use OpenSSL instead of built-in Go crypto")
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2015-11-09 23:11:38 +01:00
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flagSet.BoolVar(&args.passwd, "passwd", false, "Change password")
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flagSet.BoolVar(&args.foreground, "f", false, "Stay in the foreground")
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flagSet.BoolVar(&args.version, "version", false, "Print version and exit")
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2016-01-21 23:55:37 +01:00
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flagSet.BoolVar(&args.plaintextnames, "plaintextnames", false, "Do not encrypt file names")
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2016-01-24 18:20:04 +01:00
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flagSet.BoolVar(&args.quiet, "q", false, "")
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flagSet.BoolVar(&args.quiet, "quiet", false, "Quiet - silence informational messages")
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2015-11-27 23:34:55 +01:00
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flagSet.BoolVar(&args.diriv, "diriv", true, "Use per-directory file name IV")
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2015-12-08 16:13:29 +01:00
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flagSet.BoolVar(&args.emenames, "emenames", true, "Use EME filename encryption. This option implies diriv.")
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2015-12-19 14:41:39 +01:00
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flagSet.BoolVar(&args.gcmiv128, "gcmiv128", true, "Use an 128-bit IV for GCM encryption instead of Go's default of 96 bits")
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2016-01-24 18:10:18 +01:00
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flagSet.BoolVar(&args.nosyslog, "nosyslog", false, "Do not redirect output to syslog when running in the background")
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2016-01-31 18:09:39 +01:00
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flagSet.BoolVar(&args.wpanic, "wpanic", false, "When encountering a warning, panic and exit immediately")
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2016-02-06 22:54:14 +01:00
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flagSet.BoolVar(&args.longnames, "longnames", true, "Store names longer than 176 bytes in extra files")
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2016-05-16 23:59:26 +02:00
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flagSet.BoolVar(&args.allow_other, "allow_other", false, "Allow other users to access the filesystem. "+
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"Only works if user_allow_other is set in /etc/fuse.conf.")
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2015-11-09 23:11:38 +01:00
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flagSet.StringVar(&args.masterkey, "masterkey", "", "Mount with explicit master key")
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2015-11-14 17:16:17 +01:00
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flagSet.StringVar(&args.cpuprofile, "cpuprofile", "", "Write cpu profile to specified file")
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2016-01-21 23:55:37 +01:00
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flagSet.StringVar(&args.memprofile, "memprofile", "", "Write memory profile to specified file")
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2015-11-14 21:25:10 +01:00
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flagSet.StringVar(&args.config, "config", "", "Use specified config file instead of CIPHERDIR/gocryptfs.conf")
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2015-11-15 13:38:19 +01:00
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flagSet.StringVar(&args.extpass, "extpass", "", "Use external program for the password prompt")
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2015-11-14 17:16:17 +01:00
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flagSet.IntVar(&args.notifypid, "notifypid", 0, "Send USR1 to the specified process after "+
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"successful mount - used internally for daemonization")
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2016-02-06 19:20:54 +01:00
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flagSet.IntVar(&args.scryptn, "scryptn", configfile.ScryptDefaultLogN, "scrypt cost parameter logN. "+
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2015-11-29 18:52:58 +01:00
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"Setting this to a lower value speeds up mounting but makes the password susceptible to brute-force attacks")
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2015-11-09 23:11:38 +01:00
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flagSet.Parse(os.Args[1:])
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2015-11-14 19:10:52 +01:00
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2016-05-11 23:36:57 +02:00
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// "-openssl" needs some post-processing
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if opensslAuto == "auto" {
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args.openssl = prefer_openssl.PreferOpenSSL()
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} else {
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args.openssl, err = strconv.ParseBool(opensslAuto)
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if err != nil {
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2016-06-05 14:26:16 +02:00
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toggledlog.Fatal.Printf(colorRed+"Invalid \"-openssl\" setting: %v\n"+colorReset, err)
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2016-05-11 23:36:57 +02:00
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os.Exit(ERREXIT_USAGE)
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}
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}
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2015-12-11 19:54:53 +01:00
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// Fork a child into the background if "-f" is not set AND we are mounting a filesystem
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2015-11-29 19:06:11 +01:00
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if !args.foreground && flagSet.NArg() == 2 {
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2015-11-14 21:25:10 +01:00
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forkChild() // does not return
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}
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2016-05-11 23:36:57 +02:00
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if args.debug {
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toggledlog.Debug.Enabled = true
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}
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2015-11-14 21:25:10 +01:00
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// "-v"
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2015-11-02 23:08:51 +01:00
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if args.version {
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2016-05-11 23:36:57 +02:00
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toggledlog.Debug.Printf("openssl=%v\n", args.openssl)
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2015-11-14 21:25:10 +01:00
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printVersion()
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2015-11-01 13:55:35 +01:00
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os.Exit(0)
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}
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2016-01-31 18:09:39 +01:00
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if args.wpanic {
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2016-02-07 10:55:13 +01:00
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toggledlog.Warn.Wpanic = true
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2016-02-06 19:20:54 +01:00
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toggledlog.Debug.Printf("Panicing on warnings")
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2016-01-31 18:09:39 +01:00
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}
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2015-11-14 21:25:10 +01:00
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// Every operation below requires CIPHERDIR. Check that we have it.
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if flagSet.NArg() >= 1 {
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args.cipherdir, _ = filepath.Abs(flagSet.Arg(0))
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2016-06-14 22:45:33 +02:00
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err = checkDir(args.cipherdir)
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2015-11-14 21:25:10 +01:00
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if err != nil {
|
2016-06-05 14:26:16 +02:00
|
|
|
toggledlog.Fatal.Printf(colorRed+"Invalid cipherdir: %v\n"+colorReset, err)
|
2015-11-14 21:25:10 +01:00
|
|
|
os.Exit(ERREXIT_CIPHERDIR)
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
usageText()
|
|
|
|
os.Exit(ERREXIT_USAGE)
|
|
|
|
}
|
|
|
|
// "-q"
|
2015-11-09 22:33:42 +01:00
|
|
|
if args.quiet {
|
2016-02-06 19:20:54 +01:00
|
|
|
toggledlog.Info.Enabled = false
|
2015-11-09 22:33:42 +01:00
|
|
|
}
|
2015-11-14 21:25:10 +01:00
|
|
|
// "-config"
|
|
|
|
if args.config != "" {
|
|
|
|
args.config, err = filepath.Abs(args.config)
|
|
|
|
if err != nil {
|
2016-06-05 14:26:16 +02:00
|
|
|
toggledlog.Fatal.Printf(colorRed+"Invalid \"-config\" setting: %v\n"+colorReset, err)
|
|
|
|
os.Exit(ERREXIT_INIT)
|
2015-11-14 21:25:10 +01:00
|
|
|
}
|
2016-02-06 19:20:54 +01:00
|
|
|
toggledlog.Info.Printf("Using config file at custom location %s", args.config)
|
2015-11-14 21:25:10 +01:00
|
|
|
} else {
|
2016-02-06 19:20:54 +01:00
|
|
|
args.config = filepath.Join(args.cipherdir, configfile.ConfDefaultName)
|
2015-10-11 18:02:48 +02:00
|
|
|
}
|
2015-11-14 21:25:10 +01:00
|
|
|
// "-cpuprofile"
|
2015-11-14 17:16:17 +01:00
|
|
|
if args.cpuprofile != "" {
|
2016-02-06 19:20:54 +01:00
|
|
|
toggledlog.Info.Printf("Writing CPU profile to %s", args.cpuprofile)
|
2016-04-10 21:29:42 +02:00
|
|
|
var f *os.File
|
|
|
|
f, err = os.Create(args.cpuprofile)
|
2015-10-04 14:36:20 +02:00
|
|
|
if err != nil {
|
2016-06-05 14:26:16 +02:00
|
|
|
toggledlog.Fatal.Println(err)
|
2015-09-18 22:14:07 +02:00
|
|
|
os.Exit(ERREXIT_INIT)
|
2015-10-04 14:36:20 +02:00
|
|
|
}
|
|
|
|
pprof.StartCPUProfile(f)
|
|
|
|
defer pprof.StopCPUProfile()
|
|
|
|
}
|
2016-01-21 23:55:37 +01:00
|
|
|
// "-memprofile"
|
|
|
|
if args.memprofile != "" {
|
2016-02-06 19:20:54 +01:00
|
|
|
toggledlog.Info.Printf("Writing mem profile to %s", args.memprofile)
|
2016-04-10 21:29:42 +02:00
|
|
|
var f *os.File
|
|
|
|
f, err = os.Create(args.memprofile)
|
2016-01-21 23:55:37 +01:00
|
|
|
if err != nil {
|
2016-06-05 14:26:16 +02:00
|
|
|
toggledlog.Fatal.Println(err)
|
2016-01-21 23:55:37 +01:00
|
|
|
os.Exit(ERREXIT_INIT)
|
|
|
|
}
|
|
|
|
defer func() {
|
|
|
|
pprof.WriteHeapProfile(f)
|
|
|
|
f.Close()
|
|
|
|
return
|
|
|
|
}()
|
|
|
|
}
|
|
|
|
if args.cpuprofile != "" || args.memprofile != "" {
|
2016-06-05 14:26:16 +02:00
|
|
|
toggledlog.Info.Printf("Note: You must unmount gracefully, otherwise the profile file(s) will stay empty!\n")
|
2016-01-21 23:55:37 +01:00
|
|
|
}
|
2015-11-14 21:25:10 +01:00
|
|
|
// "-openssl"
|
2015-11-02 23:08:51 +01:00
|
|
|
if args.openssl == false {
|
2016-05-11 23:36:57 +02:00
|
|
|
toggledlog.Debug.Printf("OpenSSL disabled, using Go GCM")
|
|
|
|
} else {
|
|
|
|
toggledlog.Debug.Printf("OpenSSL enabled")
|
2015-10-06 20:24:52 +02:00
|
|
|
}
|
2015-11-14 21:25:10 +01:00
|
|
|
// Operation flags: init, passwd or mount
|
|
|
|
// "-init"
|
2015-11-02 23:08:51 +01:00
|
|
|
if args.init {
|
2015-11-14 21:25:10 +01:00
|
|
|
if flagSet.NArg() > 1 {
|
2016-06-05 14:26:16 +02:00
|
|
|
toggledlog.Fatal.Printf("Usage: %s -init [OPTIONS] CIPHERDIR\n", toggledlog.ProgramName)
|
2015-09-13 17:55:07 +02:00
|
|
|
os.Exit(ERREXIT_USAGE)
|
|
|
|
}
|
2015-11-14 21:25:10 +01:00
|
|
|
initDir(&args) // does not return
|
2015-10-11 18:33:28 +02:00
|
|
|
}
|
2015-11-14 21:25:10 +01:00
|
|
|
// "-passwd"
|
2015-11-02 23:08:51 +01:00
|
|
|
if args.passwd {
|
2015-11-14 21:25:10 +01:00
|
|
|
if flagSet.NArg() > 1 {
|
2016-06-05 14:26:16 +02:00
|
|
|
toggledlog.Fatal.Printf("Usage: %s -passwd [OPTIONS] CIPHERDIR\n", toggledlog.ProgramName)
|
2015-10-11 18:33:28 +02:00
|
|
|
os.Exit(ERREXIT_USAGE)
|
|
|
|
}
|
2015-11-15 13:38:19 +01:00
|
|
|
changePassword(&args) // does not return
|
2015-09-03 19:27:07 +02:00
|
|
|
}
|
2015-11-14 21:25:10 +01:00
|
|
|
// Mount
|
|
|
|
// Check mountpoint
|
2015-11-29 19:06:11 +01:00
|
|
|
if flagSet.NArg() != 2 {
|
2016-06-05 14:26:16 +02:00
|
|
|
toggledlog.Fatal.Printf("Usage: %s [OPTIONS] CIPHERDIR MOUNTPOINT\n", toggledlog.ProgramName)
|
2015-11-14 21:25:10 +01:00
|
|
|
os.Exit(ERREXIT_USAGE)
|
|
|
|
}
|
|
|
|
args.mountpoint, err = filepath.Abs(flagSet.Arg(1))
|
2015-09-09 19:32:59 +02:00
|
|
|
if err != nil {
|
2016-06-05 14:26:16 +02:00
|
|
|
toggledlog.Fatal.Printf(colorRed+"Invalid mountpoint: %v\n"+colorReset, err)
|
2015-11-14 21:25:10 +01:00
|
|
|
os.Exit(ERREXIT_MOUNTPOINT)
|
2015-10-07 21:26:17 +02:00
|
|
|
}
|
2015-11-14 21:25:10 +01:00
|
|
|
err = checkDirEmpty(args.mountpoint)
|
|
|
|
if err != nil {
|
2016-06-05 14:26:16 +02:00
|
|
|
toggledlog.Fatal.Printf(colorRed+"Invalid mountpoint: %v\n"+colorReset, err)
|
2015-11-14 21:25:10 +01:00
|
|
|
os.Exit(ERREXIT_MOUNTPOINT)
|
2015-11-03 00:00:13 +01:00
|
|
|
}
|
2015-11-14 21:25:10 +01:00
|
|
|
// Get master key
|
|
|
|
var masterkey []byte
|
2016-02-06 19:20:54 +01:00
|
|
|
var confFile *configfile.ConfFile
|
2015-11-14 21:25:10 +01:00
|
|
|
if args.masterkey != "" {
|
|
|
|
// "-masterkey"
|
2016-02-06 19:20:54 +01:00
|
|
|
toggledlog.Info.Printf("Using explicit master key.")
|
2015-11-14 21:25:10 +01:00
|
|
|
masterkey = parseMasterKey(args.masterkey)
|
2016-02-06 19:20:54 +01:00
|
|
|
toggledlog.Info.Printf("THE MASTER KEY IS VISIBLE VIA \"ps -auxwww\", ONLY USE THIS MODE FOR EMERGENCIES.")
|
2015-11-14 21:25:10 +01:00
|
|
|
} else if args.zerokey {
|
|
|
|
// "-zerokey"
|
2016-02-06 19:20:54 +01:00
|
|
|
toggledlog.Info.Printf("Using all-zero dummy master key.")
|
|
|
|
toggledlog.Info.Printf("ZEROKEY MODE PROVIDES NO SECURITY AT ALL AND SHOULD ONLY BE USED FOR TESTING.")
|
|
|
|
masterkey = make([]byte, cryptocore.KeyLen)
|
2015-11-14 21:25:10 +01:00
|
|
|
} else {
|
|
|
|
// Load master key from config file
|
2015-11-15 13:38:19 +01:00
|
|
|
masterkey, confFile = loadConfig(&args)
|
2015-11-14 21:25:10 +01:00
|
|
|
printMasterKey(masterkey)
|
2015-09-13 17:55:07 +02:00
|
|
|
}
|
2015-11-14 21:25:10 +01:00
|
|
|
// Initialize FUSE server
|
2016-02-06 19:20:54 +01:00
|
|
|
toggledlog.Debug.Printf("cli args: %v", args)
|
2016-02-06 19:27:59 +01:00
|
|
|
srv := initFuseFrontend(masterkey, args, confFile)
|
2016-02-06 19:20:54 +01:00
|
|
|
toggledlog.Info.Println(colorGreen + "Filesystem mounted and ready." + colorReset)
|
2016-01-20 22:31:15 +01:00
|
|
|
// We are ready - send USR1 signal to our parent and switch to syslog
|
2015-11-09 23:21:11 +01:00
|
|
|
if args.notifypid > 0 {
|
|
|
|
sendUsr1(args.notifypid)
|
2016-01-20 22:31:15 +01:00
|
|
|
|
2016-01-24 18:10:18 +01:00
|
|
|
if !args.nosyslog {
|
2016-02-06 19:20:54 +01:00
|
|
|
toggledlog.Info.SwitchToSyslog(syslog.LOG_USER | syslog.LOG_INFO)
|
|
|
|
toggledlog.Debug.SwitchToSyslog(syslog.LOG_USER | syslog.LOG_DEBUG)
|
|
|
|
toggledlog.Warn.SwitchToSyslog(syslog.LOG_USER | syslog.LOG_WARNING)
|
2016-01-24 18:10:18 +01:00
|
|
|
}
|
2015-11-09 23:21:11 +01:00
|
|
|
}
|
2015-11-14 21:25:10 +01:00
|
|
|
// Wait for SIGINT in the background and unmount ourselves if we get it.
|
|
|
|
// This prevents a dangling "Transport endpoint is not connected" mountpoint.
|
2015-11-02 23:08:51 +01:00
|
|
|
handleSigint(srv, args.mountpoint)
|
2015-11-01 13:28:58 +01:00
|
|
|
// Jump into server loop. Returns when it gets an umount request from the kernel.
|
2015-10-06 00:29:08 +02:00
|
|
|
srv.Serve()
|
2015-11-14 21:25:10 +01:00
|
|
|
// main exits with code 0
|
2015-09-08 00:54:24 +02:00
|
|
|
}
|
|
|
|
|
2016-02-06 19:27:59 +01:00
|
|
|
// initFuseFrontend - initialize gocryptfs/fusefrontend
|
2015-11-14 21:25:10 +01:00
|
|
|
// Calls os.Exit on errors
|
2016-02-06 19:27:59 +01:00
|
|
|
func initFuseFrontend(key []byte, args argContainer, confFile *configfile.ConfFile) *fuse.Server {
|
2015-11-28 16:52:57 +01:00
|
|
|
|
|
|
|
// Reconciliate CLI and config file arguments into a Args struct that is passed to the
|
|
|
|
// filesystem implementation
|
2016-02-06 19:27:59 +01:00
|
|
|
frontendArgs := fusefrontend.Args{
|
2015-11-29 21:55:20 +01:00
|
|
|
Cipherdir: args.cipherdir,
|
|
|
|
Masterkey: key,
|
|
|
|
OpenSSL: args.openssl,
|
2015-11-28 16:52:57 +01:00
|
|
|
PlaintextNames: args.plaintextnames,
|
2015-11-29 21:55:20 +01:00
|
|
|
DirIV: args.diriv,
|
2015-12-08 16:13:29 +01:00
|
|
|
EMENames: args.emenames,
|
2015-12-19 14:41:39 +01:00
|
|
|
GCMIV128: args.gcmiv128,
|
2016-02-06 22:54:14 +01:00
|
|
|
LongNames: args.longnames,
|
2015-11-28 16:52:57 +01:00
|
|
|
}
|
|
|
|
// confFile is nil when "-zerokey" or "-masterkey" was used
|
|
|
|
if confFile != nil {
|
|
|
|
// Settings from the config file override command line args
|
2016-02-06 19:20:54 +01:00
|
|
|
frontendArgs.PlaintextNames = confFile.IsFeatureFlagSet(configfile.FlagPlaintextNames)
|
|
|
|
frontendArgs.DirIV = confFile.IsFeatureFlagSet(configfile.FlagDirIV)
|
|
|
|
frontendArgs.EMENames = confFile.IsFeatureFlagSet(configfile.FlagEMENames)
|
|
|
|
frontendArgs.GCMIV128 = confFile.IsFeatureFlagSet(configfile.FlagGCMIV128)
|
2015-11-28 16:52:57 +01:00
|
|
|
}
|
2015-12-08 16:13:29 +01:00
|
|
|
// EMENames implies DirIV, both on the command line and in the config file.
|
|
|
|
if frontendArgs.EMENames {
|
|
|
|
frontendArgs.DirIV = true
|
|
|
|
}
|
|
|
|
// PlainTexnames disables both EMENames and DirIV
|
|
|
|
if frontendArgs.PlaintextNames {
|
|
|
|
frontendArgs.DirIV = false
|
|
|
|
frontendArgs.EMENames = false
|
|
|
|
}
|
2016-01-20 20:55:56 +01:00
|
|
|
jsonBytes, _ := json.MarshalIndent(frontendArgs, "", "\t")
|
2016-02-06 19:20:54 +01:00
|
|
|
toggledlog.Debug.Printf("frontendArgs: %s", string(jsonBytes))
|
2015-09-08 00:54:24 +02:00
|
|
|
|
2016-02-06 19:27:59 +01:00
|
|
|
finalFs := fusefrontend.NewFS(frontendArgs)
|
2015-10-04 14:50:27 +02:00
|
|
|
pathFsOpts := &pathfs.PathNodeFsOptions{ClientInodes: true}
|
|
|
|
pathFs := pathfs.NewPathNodeFs(finalFs, pathFsOpts)
|
|
|
|
fuseOpts := &nodefs.Options{
|
2015-09-08 00:54:24 +02:00
|
|
|
// These options are to be compatible with libfuse defaults,
|
|
|
|
// making benchmarking easier.
|
|
|
|
NegativeTimeout: time.Second,
|
|
|
|
AttrTimeout: time.Second,
|
|
|
|
EntryTimeout: time.Second,
|
|
|
|
}
|
2015-10-04 14:50:27 +02:00
|
|
|
conn := nodefs.NewFileSystemConnector(pathFs.Root(), fuseOpts)
|
2015-09-19 10:47:16 +02:00
|
|
|
var mOpts fuse.MountOptions
|
|
|
|
mOpts.AllowOther = false
|
2016-05-16 23:59:26 +02:00
|
|
|
if args.allow_other {
|
|
|
|
toggledlog.Info.Printf(colorYellow + "The option \"-allow_other\" is set. Make sure the file " +
|
|
|
|
"permissions protect your data from unwanted access." + colorReset)
|
|
|
|
mOpts.AllowOther = true
|
|
|
|
// Make the kernel check the file permissions for us
|
|
|
|
mOpts.Options = append(mOpts.Options, "default_permissions")
|
|
|
|
}
|
2015-09-19 10:47:16 +02:00
|
|
|
// Set values shown in "df -T" and friends
|
|
|
|
// First column, "Filesystem"
|
2015-11-27 22:27:24 +01:00
|
|
|
mOpts.Options = append(mOpts.Options, "fsname="+args.cipherdir)
|
2015-09-19 10:47:16 +02:00
|
|
|
// Second column, "Type", will be shown as "fuse." + Name
|
2015-10-04 14:36:20 +02:00
|
|
|
mOpts.Name = "gocryptfs"
|
2015-09-19 10:47:16 +02:00
|
|
|
|
2015-11-27 22:27:24 +01:00
|
|
|
srv, err := fuse.NewServer(conn.RawFS(), args.mountpoint, &mOpts)
|
2015-09-08 00:54:24 +02:00
|
|
|
if err != nil {
|
2016-06-05 14:26:16 +02:00
|
|
|
toggledlog.Fatal.Printf("Mount failed: %v", err)
|
2015-10-11 18:33:28 +02:00
|
|
|
os.Exit(ERREXIT_MOUNT)
|
2015-09-08 00:54:24 +02:00
|
|
|
}
|
2015-11-27 23:34:55 +01:00
|
|
|
srv.SetDebug(args.fusedebug)
|
2015-09-08 00:54:24 +02:00
|
|
|
|
2015-12-11 19:54:53 +01:00
|
|
|
// All FUSE file and directory create calls carry explicit permission
|
|
|
|
// information. We need an unrestricted umask to create the files and
|
|
|
|
// directories with the requested permissions.
|
|
|
|
syscall.Umask(0000)
|
|
|
|
|
2015-10-06 00:29:08 +02:00
|
|
|
return srv
|
2015-09-08 00:54:24 +02:00
|
|
|
}
|
2015-11-01 13:28:58 +01:00
|
|
|
|
|
|
|
func handleSigint(srv *fuse.Server, mountpoint string) {
|
|
|
|
ch := make(chan os.Signal, 1)
|
|
|
|
signal.Notify(ch, os.Interrupt)
|
|
|
|
signal.Notify(ch, syscall.SIGTERM)
|
|
|
|
go func() {
|
|
|
|
<-ch
|
|
|
|
err := srv.Unmount()
|
|
|
|
if err != nil {
|
2016-06-05 14:26:16 +02:00
|
|
|
toggledlog.Warn.Print(err)
|
2016-02-06 19:20:54 +01:00
|
|
|
toggledlog.Info.Printf("Trying lazy unmount")
|
2015-11-01 13:28:58 +01:00
|
|
|
cmd := exec.Command("fusermount", "-u", "-z", mountpoint)
|
|
|
|
cmd.Stdout = os.Stdout
|
|
|
|
cmd.Stderr = os.Stderr
|
|
|
|
cmd.Run()
|
|
|
|
}
|
|
|
|
os.Exit(1)
|
|
|
|
}()
|
|
|
|
}
|
2015-12-19 15:46:19 +01:00
|
|
|
|
|
|
|
// Escape sequences for terminal colors
|
2016-05-16 23:59:26 +02:00
|
|
|
var colorReset, colorGrey, colorRed, colorGreen, colorYellow string
|
2015-12-19 15:46:19 +01:00
|
|
|
|
|
|
|
func setupColors() {
|
|
|
|
if terminal.IsTerminal(int(os.Stdout.Fd())) {
|
|
|
|
colorReset = "\033[0m"
|
|
|
|
colorGrey = "\033[2m"
|
|
|
|
colorRed = "\033[31m"
|
|
|
|
colorGreen = "\033[32m"
|
2016-05-16 23:59:26 +02:00
|
|
|
colorYellow = "\033[33m"
|
2015-12-19 15:46:19 +01:00
|
|
|
}
|
|
|
|
}
|