Exemple #1
0
// KeyCallBack implements a callback function to request keys from file-descriptor
func KeyCallBack(keyMgtFd int) (*os.File, func(*message.Curve25519Key) *message.Curve25519Key) {
	knownKeys := make(map[message.Curve25519Key]message.Curve25519Key)
	fd := os.NewFile(uintptr(keyMgtFd), "fd/"+strconv.Itoa(keyMgtFd))
	return fd, func(pubkey *message.Curve25519Key) *message.Curve25519Key {
		// KeyCallBack func(*Curve25519Key) *Curve25519Key
		log.Sync()
		if v, ok := knownKeys[*pubkey]; ok { // Return from cache if we can
			return &v
		}
		b := make([]byte, 120)
		log.Dataf("STATUS (KeyMGTRequest):\t%s\n", utils.B58encode(pubkey[:]))
		log.Sync()
		n, _ := fd.Read(b)
		if n == 0 {
			log.Datas("STATUS (KeyMGT):\tREAD FAILURE\n")
			return nil
		}
		log.Datas("STATUS (KeyMGT):\tREAD DONE\n")
		k1, k2 := utils.ParseKeyPair(strings.Trim(string(b[:n]), " \t\r\n"))
		if k1 != nil {
			pub1 := message.GenPubKey(k1) // Add to cache
			knownKeys[*pub1] = *k1
		}
		if k2 != nil {
			pub2 := message.GenPubKey(k2) // Add to cache
			knownKeys[*pub2] = *k2
		}
		if v, ok := knownKeys[*pubkey]; ok { // Return from cache if we can
			return &v
		}
		return nil
	}
}
Exemple #2
0
// CmdPost posts a message
func CmdPost() int {
	var inData []byte
	var err error
	if OptionsVar.Server == "" {
		log.Fatal("Server must be specified: --server")
		return 1
	}

	maxInData := int64(GlobalConfigVar.BodyLength-(message.Curve25519KeySize*2)) * 5
	inData, err = inputData(OptionsVar.Infile, maxInData)
	if err != nil {
		log.Fatalf("No input data: %s\n", err)
		return 1
	}
	log.Datas("STATUS (Process):\tPOST\n")
	proto := repproto.New(OptionsVar.Socksserver, OptionsVar.Server)
	err = proto.PostSpecific(OptionsVar.Server, inData)
	if err != nil {
		log.Fatalf("Output failed: %s\n", err)
		log.Datas("STATUS (Result):\tFAIL\n")
	} else {
		log.Datas("STATUS (Result):\tDONE\n")
	}

	log.Sync()
	return 0
}
Exemple #3
0
// selectPrivKey returns the selected private key as string.
// privkeyOpt is the data given on the commandline
// privkeyConfig is the data from the config file, which must be a key
// privkeyDefault is the default to use when the commandline option was empty
// supported commandline options are
// ""  : (empty string) use default
// "-" : read from stdin,
// number : read from filedescriptor number
// "tty" : query user on tty
// key : return the key
func selectPrivKey(privkeyOpt, privkeyConfig, privkeyDefault string) string {
	readFd := -1
	if privkeyOpt == "" {
		privkeyOpt = privkeyDefault
	}
	if privkeyOpt == "config" {
		return privkeyConfig
	}
	if privkeyOpt == "tty" {
		pass, err := readPassTTY("Private key(s): ")
		if err != nil {
			return ""
		}
		return string(pass)
	}
	if privkeyOpt == "-" {
		readFd = 0
	}
	fdI, err := strconv.Atoi(privkeyOpt)
	if err == nil {
		readFd = fdI
	}
	if readFd >= 0 {
		// Read from file descriptor
		log.Sync()
		fd := os.NewFile(uintptr(readFd), "fd/"+strconv.Itoa(readFd))
		defer fd.Close()
		b := make([]byte, 120)
		log.Datas("STATUS (KeyMGT):\tENTER KEY\n")
		log.Sync()
		n, _ := fd.Read(b)
		log.Datas("STATUS (KeyMGT):\tREAD DONE\n")
		if n == 0 {
			return ""
		}
		return strings.Trim(string(b[:n]), " \t\r\n")
	}
	return privkeyOpt
}
Exemple #4
0
func testCommands() bool {
	i := 0
	for _, x := range commands {
		if *x {
			i++
		}
	}
	if i > 1 {
		log.Fatal("Only one command may be specified")
		log.Sync()
		return false
	}
	if i == 0 {
		if len(flag.Args()) > 0 {
			*commands[cmdDecrypt] = true
		} else {
			*commands[cmdEncrypt] = true
		}
	}
	return true
}
Exemple #5
0
func runCommands() (retval int) {
	log.SetMinLevel(log.LevelPrint)
	if options.Appdata {
		log.SetMinLevel(log.LevelData)
	}
	if options.Verbose {
		log.SetMinLevel(log.LevelDebug)
	}
	if options.KEYVERB {
		log.SetMinLevel(log.LevelSecret)
	}
	usercfgfile := client.UserConfigFile()
	if options.Configfile != "" || usercfgfile != "" {
		configFile := usercfgfile
		if options.Configfile != "" {
			configFile = options.Configfile
		}
		globalconfigT, err := client.LoadConfigFile(configFile)
		if err == nil {
			globalconfig = globalconfigT
		} else {
			log.Errorf("Config file failed to load: %s\n", err)
		}
	}
	for k, v := range commands {
		if *v {
			if callFunc[k] != nil {
				client.OptionsVar = options
				client.GlobalConfigVar = globalconfig
				retval = callFunc[k]()
			} else {
				log.Fatal("Command not implemented")
				return 100
			}
			log.Sync()
			break
		}
	}
	return
}
Exemple #6
0
// CmdEncrypt encrypts data.
func CmdEncrypt() int {
	var privkey, embedConstantPrivKey, embedTemporaryPrivKey, embedConstantPubKey, embedTemporaryPubKey *message.Curve25519Key
	var err error
	var inData, encMessage []byte
	var meta *message.MetaDataSend
	var signKeyPair *message.SignKeyPair
	var removeFile string
	if OptionsVar.Server == "" {
		getPeers(false)
	}
	// 	OptionsVar.anonymous . disable private key and signkey
	if OptionsVar.Anonymous {
		OptionsVar.Signkey = ""
		OptionsVar.Privkey = ""
		GlobalConfigVar.PrivateKey = ""
	}
	mindelay := uint32(OptionsVar.Mindelay)
	maxdelay := uint32(OptionsVar.Maxdelay)

	// Read input data
	maxInData := int64(GlobalConfigVar.BodyLength - (message.Curve25519KeySize * 2) - innerHeader)
	//maxInData := int64(MsgSizeLimit)
	if OptionsVar.Repost {
		maxInData -= utils.RepostHeaderSize - message.KeyHeaderSize - message.SignHeaderSize
	}
	log.Debugf("Size limit: %d\n", maxInData)
	inData, err = inputData(OptionsVar.Infile, maxInData)
	if err != nil {
		log.Fatalf("No input data: %s\n", err)
		return 1
	}

	// Verify list contents
	if OptionsVar.MessageType == message.MsgTypeList {
		err := utils.VerifyListContent(inData)
		if err != nil {
			log.Errorf("Could not verify list input: %s\n", err)
			return 1
		}
	}

	// Select private key to use
	privkeystr := selectPrivKey(OptionsVar.Privkey, GlobalConfigVar.PrivateKey, "")
	// Parse privkey
	if privkeystr != "" {
		privkey = new(message.Curve25519Key)
		copy(privkey[:], utils.B58decode(privkeystr))
	}
	// Generate embedded keypairs
	if OptionsVar.Embedkey {
		if OptionsVar.Notrace || privkey == nil {
			embedConstantPrivKey, err = message.GenLongTermKey(OptionsVar.Hidden, OptionsVar.Sync)
			if err != nil {
				log.Errorf("Key generation error:%s\n", err)
				return 1
			}
		} else {
			embedConstantPrivKey = privkey
		}
		embedConstantPubKey = message.GenPubKey(embedConstantPrivKey)
		embedTemporaryPrivKey, err = message.GenRandomKey()
		if err != nil {
			log.Errorf("Key generation error:%s\n", err)
			return 1
		}
		embedTemporaryPubKey = message.GenPubKey(embedTemporaryPrivKey)
	}
	embedded := utils.EncodeEmbedded(embedConstantPubKey, embedTemporaryPubKey)
	recipientConstantPubKey, recipientTemporaryPubKey := utils.ParseKeyPair(OptionsVar.Recipientkey)

	// Find a signature keypair if we can
	signKeyDir := ""
	if GlobalConfigVar.KeyDir != "" {
		signKeyDir = GlobalConfigVar.KeyDir
	}
	if OptionsVar.Signdir != "" {
		signKeyDir = OptionsVar.Signdir
	}

	if OptionsVar.Signkey != "" {
		var d []byte
		d, err = utils.MaxReadFile(2048, OptionsVar.Signkey)
		if err == nil {
			signKeyPair = new(message.SignKeyPair)
			kp, err := signKeyPair.Unmarshal(d)
			if err != nil {
				log.Errorf("Sign keypair decode error: %s\n", err)
				signKeyPair = nil
			} else {
				signKeyPair = kp
			}
		} else {
			log.Errorf("Sign keypair read error: %s\n", err)
		}
	}
	if signKeyPair == nil && signKeyDir != "" {
		var d []byte
		d, removeFile, err = utils.ReadRandomFile(signKeyDir, 2048)
		if err == nil {
			signKeyPair = new(message.SignKeyPair)
			kp, err := signKeyPair.Unmarshal(d)
			if err != nil {
				log.Errorf("Sign keypair decode error: %s\n", err)
				signKeyPair = nil
				removeFile = ""
			} else {
				signKeyPair = kp
			}
		} else {
			log.Errorf("Sign keypair read error: %s\n", err)
		}
	}

	// Set up sender parameters
	sender := message.Sender{
		Signer:                    signKeyPair,
		SenderPrivateKey:          privkey,
		ReceiveConstantPublicKey:  recipientConstantPubKey,
		ReceiveTemporaryPublicKey: recipientTemporaryPubKey,
		TotalLength:               GlobalConfigVar.BodyLength,
		PadToLength:               GlobalConfigVar.PadToLength,
		HashCashBits:              GlobalConfigVar.MinHashCash,
	}
	// We want encryption output in realtime
	log.Sync()
	inData = append(embedded, inData...)
	if OptionsVar.Repost {
		// Generate a repost-message
		encMessage, meta, err = sender.EncryptRepost(byte(OptionsVar.MessageType), inData)
		if err == nil {
			rph := utils.EncodeRepostHeader(meta.PadKey, mindelay, maxdelay)
			encMessage = append(rph[:], encMessage...)
			log.Datas("STATUS (Process):\tPREPOST\n")
			log.Dataf("STATUS (RepostSettings):\t%d %d\n", mindelay, maxdelay)
		}
	} else {
		// Generate a normal message
		encMessage, meta, err = sender.Encrypt(byte(OptionsVar.MessageType), inData)
		if err == nil {
			log.Datas("STATUS (Process):\tPOST\n")
		}
	}
	if err != nil {
		log.Fatalf("Encryption failed: %s\n", err)
		return 1
	}
	log.Sync()

	// Output. repost is only written to stdout or file
	if OptionsVar.Outfile == "-" || (OptionsVar.Repost && OptionsVar.Outfile == "") {
		err = utils.WriteStdout(encMessage)
		// Display data as necessary
		if err == nil {
			log.Dataf("STATUS (RecPubKey):\t%s\n", utils.B58encode(meta.ReceiverConstantPubKey[:]))
			if OptionsVar.Embedkey {
				log.Dataf("STATUS (EmbedPublicKey):\t%s_%s\n", utils.B58encode(embedConstantPubKey[:]), utils.B58encode(embedTemporaryPubKey[:]))
				log.Dataf("STATUS (EmbedPrivateKey):\t%s_%s\n", utils.B58encode(embedConstantPrivKey[:]), utils.B58encode(embedTemporaryPrivKey[:]))
			}
			if meta.MessageKey != nil {
				log.Dataf("STATUS (ListInput):\tNULL %s %s\n", utils.B58encode(meta.MessageID[:]), utils.B58encode(meta.MessageKey[:]))
				log.Dataf("STATUS (Message):\t%s_%s\n", utils.B58encode(meta.MessageID[:]), utils.B58encode(meta.MessageKey[:]))
			} else {
				log.Dataf("STATUS (ListInput):\tNULL %s NULL\n", utils.B58encode(meta.MessageID[:]))
				log.Dataf("STATUS (MessageID):\t%s\n", utils.B58encode(meta.MessageID[:]))
			}
		}
	} else if OptionsVar.Outfile != "" || OptionsVar.Repost {
		err = utils.WriteNewFile(OptionsVar.Outfile, encMessage)
		// Display data as necessary
		log.Dataf("STATUS (RecPubKey):\t%s\n", utils.B58encode(meta.ReceiverConstantPubKey[:]))
		if err == nil {
			if OptionsVar.Embedkey {
				log.Dataf("STATUS (EmbedPublicKey):\t%s_%s\n", utils.B58encode(embedConstantPubKey[:]), utils.B58encode(embedTemporaryPubKey[:]))
				log.Dataf("STATUS (EmbedPrivateKey):\t%s_%s\n", utils.B58encode(embedConstantPrivKey[:]), utils.B58encode(embedTemporaryPrivKey[:]))
			}
			if meta.MessageKey != nil {
				log.Dataf("STATUS (ListInput):\tNULL %s %s\n", utils.B58encode(meta.MessageID[:]), utils.B58encode(meta.MessageKey[:]))
				log.Dataf("STATUS (Message):\t%s_%s\n", utils.B58encode(meta.MessageID[:]), utils.B58encode(meta.MessageKey[:]))
				log.Printf("Pastebin Address:\t%s_%s\n", utils.B58encode(meta.MessageID[:]), utils.B58encode(meta.MessageKey[:]))
			} else {
				log.Dataf("STATUS (ListInput):\tNULL %s NULL\n", utils.B58encode(meta.MessageID[:]))
				log.Dataf("STATUS (MessageID):\t%s\n", utils.B58encode(meta.MessageID[:]))
				log.Printf("Pastebin Address:\t%s\n", utils.B58encode(meta.MessageID[:]))
			}
		}
	} else {
		// Post to server
		server := OptionsVar.Server
		proto := repproto.New(OptionsVar.Socksserver, OptionsVar.Server, GlobalConfigVar.PasteServers...)
		if server == "" {
			server, err = proto.Post(meta.MessageID[:], encMessage)
		} else {
			err = proto.PostSpecific(server, encMessage)
		}
		sep := "/"
		if server != "" && server[len(server)-1] == '/' {
			sep = ""
		}
		if err == nil {
			if meta.MessageKey != nil {
				log.Dataf("STATUS (URL):\t%s/%s_%s\n", server, utils.B58encode(meta.MessageID[:]), utils.B58encode(meta.MessageKey[:]))
			}
			if OptionsVar.Embedkey {
				log.Dataf("STATUS (EmbedPublicKey):\t%s_%s\n", utils.B58encode(embedConstantPubKey[:]), utils.B58encode(embedTemporaryPubKey[:]))
				log.Dataf("STATUS (EmbedPrivateKey):\t%s_%s\n", utils.B58encode(embedConstantPrivKey[:]), utils.B58encode(embedTemporaryPrivKey[:]))
			}
			if meta.MessageKey != nil {
				log.Dataf("STATUS (ListInput):\t%s %s %s\n", server, utils.B58encode(meta.MessageID[:]), utils.B58encode(meta.MessageKey[:]))
				log.Dataf("STATUS (Message):\t%s_%s\n", utils.B58encode(meta.MessageID[:]), utils.B58encode(meta.MessageKey[:]))
				log.Printf("Pastebin Address:\t%s%s%s_%s\n", server, sep, utils.B58encode(meta.MessageID[:]), utils.B58encode(meta.MessageKey[:]))
			} else {
				log.Dataf("STATUS (ListInput):\t%s %s NULL\n", server, utils.B58encode(meta.MessageID[:]))
				log.Dataf("STATUS (MessageID):\t%s\n", utils.B58encode(meta.MessageID[:]))
				log.Printf("Pastebin Address:\t%s%s%s\n", server, sep, utils.B58encode(meta.MessageID[:]))
			}
		}
	}
	if err != nil {
		log.Fatalf("Output failed: %s\n", err)
		log.Sync()
		return 1
	}
	if removeFile != "" {
		// Operation has been successful, remove signer keyfile (if any)
		os.Remove(removeFile)
	}
	return 0
}
Exemple #7
0
// CmdIndex returns the index for a private key
func CmdIndex() int {
	var server string
	var err error
	var pubkey *message.Curve25519Key
	var privkey message.Curve25519Key
	var messages []*structs.MessageStruct
	var moreMessages bool
	if OptionsVar.Server == "" {
		getPeers(false)
	}
	if OptionsVar.Outdir != "" && !isDir(OptionsVar.Outdir) {
		log.Fatalf("outdir does not exist or is no directory: %s", OptionsVar.Outdir)
		return 1
	}

	// privkey must be set
	privkeystr := selectPrivKey(OptionsVar.Privkey, GlobalConfigVar.PrivateKey, "tty")
	if privkeystr == "" {
		log.Fatal("Private key missing: --privkey\n")
		return 1
	}
	privT := utils.B58decode(privkeystr)
	copy(privkey[:], privT)
	pubkey = message.CalcPub(&privkey)
	if OptionsVar.Server != "" {
		server = OptionsVar.Server
	}

	proto := repproto.New(OptionsVar.Socksserver, OptionsVar.Server)
	log.Dataf("STATUS (Process):\tLIST\n")

	if server != "" {
		fmt.Println("Specific server")
		messages, moreMessages, err = proto.ListSpecific(server, pubkey[:], privkey[:], OptionsVar.Start, OptionsVar.Count)
	} else {
		fmt.Println("Any server")
		server, messages, moreMessages, err = proto.List(pubkey[:], privkey[:], OptionsVar.Start, OptionsVar.Count)
	}
	if err != nil {
		log.Fatalf("List error: %s\n", err)
		return 1
	}
	if len(messages) > 0 {
		fmt.Print("Index\t\tMessageID\n")
		fmt.Print("------------------------------------------------------------\n")
	}
	for _, msg := range messages {
		log.Dataf("STATUS (MessageList):\t%d %s %s %d %d\n", msg.Counter, utils.B58encode(msg.MessageID[:]), utils.B58encode(msg.SignerPub[:]), msg.PostTime, msg.ExpireTime)
		fmt.Printf("%d\t\t%s\n", msg.Counter, utils.B58encode(msg.MessageID[:]))
	}
	log.Dataf("STATUS (ListResult):\t%d %d %t\n", OptionsVar.Start, OptionsVar.Count, moreMessages)
	if len(messages) > 0 {
		fmt.Print("------------------------------------------------------------\n")
	}
	if moreMessages {
		fmt.Print("More messages may be available\n")
	} else {
		fmt.Print("Listing complete\n")
	}
	if OptionsVar.Outdir != "" {
		log.Dataf("STATUS (Process):\tFETCHMANY\n")
		fmt.Print("Fetching messages...")
		hasErrors := 0
		for _, msg := range messages {
			log.Dataf("STATUS (Fetch):\t%s\n", utils.B58encode(msg.MessageID[:]))
			err = loadStoreMessage(server, msg.MessageID[:], OptionsVar.Outdir+string(os.PathSeparator)+utils.B58encode(msg.MessageID[:])) // use index server for download, store with name messageID
			if err != nil {
				fmt.Print(".F")
				hasErrors++
				log.Dataf("STATUS (FetchError):\t%s\n", utils.B58encode(msg.MessageID[:]))
			} else {
				fmt.Print(".o")
				log.Dataf("STATUS (FetchComplete):\t%s\n", utils.B58encode(msg.MessageID[:]))
			}
		}
		if hasErrors > 0 {
			fmt.Print(". Some errors during download.\n")
			log.Dataf("STATUS (FetchResult):\tERROS %d\n", hasErrors)
		} else {
			fmt.Print(". Download complete.\n")
			log.Dataf("STATUS (FetchResult):\tOK\n")
		}
	}

	log.Sync()
	// server can be set
	return 0
}
Exemple #8
0
// CmdIndex returns the index for a private key
func CmdIndex() int {
	var server string
	var err error
	var pubkey *message.Curve25519Key
	var privkey message.Curve25519Key
	var messages []*structs.MessageStruct
	var moreMessages bool
	if OptionsVar.Server == "" {
		// getPeers(false). Meaningless for index calls
		log.Fatal("--index requires --server to be specified.\n")
		return 1
	}
	server = OptionsVar.Server

	if OptionsVar.Outdir != "" && !isDir(OptionsVar.Outdir) {
		log.Fatalf("outdir does not exist or is no directory: %s", OptionsVar.Outdir)
		return 1
	}

	// privkey must be set
	privkeystr := selectPrivKey(OptionsVar.Privkey, GlobalConfigVar.PrivateKey, "tty")
	if privkeystr == "" {
		log.Fatal("Private key missing: --privkey\n")
		return 1
	}
	// Test if long key is given, if yes, use only first part
	if pos := strings.Index(privkeystr, "_"); pos > 0 {
		privkeystr = privkeystr[:pos]
	}
	privT := utils.B58decode(privkeystr)
	copy(privkey[:], privT)
	pubkey = message.CalcPub(&privkey)

	proto := repproto.New(OptionsVar.Socksserver, OptionsVar.Server)
	// If we want to change to using the server list instead. Not a great idea
	// proto := repproto.New(OptionsVar.Socksserver, OptionsVar.Server, GlobalConfigVar.PasteServers...)
	// re-enable if we want to use the server list: server, messages, moreMessages, err = proto.List(pubkey[:], privkey[:], OptionsVar.Start, OptionsVar.Count)

	log.Dataf("STATUS (Process):\tLIST\n")

	messages, moreMessages, err = proto.ListSpecific(server, pubkey[:], privkey[:], OptionsVar.Start, OptionsVar.Count)

	if err != nil {
		log.Fatalf("List error: %s\n", err)
		return 1
	}
	if len(messages) > 0 {
		fmt.Print("Index\t\tMessageID\n")
		fmt.Print("------------------------------------------------------------\n")
	}
	for _, msg := range messages {
		log.Dataf("STATUS (MessageList):\t%d %s %s %d %d\n", msg.Counter, utils.B58encode(msg.MessageID[:]), utils.B58encode(msg.SignerPub[:]), msg.PostTime, msg.ExpireTime)
		fmt.Printf("%d\t\t%s\n", msg.Counter, utils.B58encode(msg.MessageID[:]))
	}
	log.Dataf("STATUS (ListResult):\t%d %d %t\n", OptionsVar.Start, OptionsVar.Count, moreMessages)
	if len(messages) > 0 {
		fmt.Print("------------------------------------------------------------\n")
	}
	if moreMessages {
		fmt.Print("More messages may be available\n")
	} else {
		fmt.Print("Listing complete\n")
	}
	if OptionsVar.Outdir != "" {
		log.Dataf("STATUS (Process):\tFETCHMANY\n")
		fmt.Print("Fetching messages...")
		hasErrors := 0
		for _, msg := range messages {
			log.Dataf("STATUS (Fetch):\t%s\n", utils.B58encode(msg.MessageID[:]))
			err = loadStoreMessage(server, msg.MessageID[:], OptionsVar.Outdir+string(os.PathSeparator)+utils.B58encode(msg.MessageID[:])) // use index server for download, store with name messageID
			if err != nil {
				fmt.Print(".F")
				hasErrors++
				log.Dataf("STATUS (FetchError):\t%s\n", utils.B58encode(msg.MessageID[:]))
			} else {
				fmt.Print(".o")
				log.Dataf("STATUS (FetchComplete):\t%s\n", utils.B58encode(msg.MessageID[:]))
			}
		}
		if hasErrors > 0 {
			fmt.Print(". Some errors during download.\n")
			log.Dataf("STATUS (FetchResult):\tERROS %d\n", hasErrors)
		} else {
			fmt.Print(". Download complete.\n")
			log.Dataf("STATUS (FetchResult):\tOK\n")
		}
	}

	log.Sync()
	// server can be set
	return 0
}