whisper: fixed flags, etc.

This commit is contained in:
Vlad 2017-01-15 00:04:29 +01:00
parent fab165ead9
commit c8eff7fde0

View file

@ -27,6 +27,7 @@ import (
"crypto/sha512"
"encoding/binary"
"encoding/hex"
"flag"
"fmt"
"os"
"strconv"
@ -49,250 +50,111 @@ import (
const sizeOfInt = 4
var (
quitCommand = "~Q"
enodePrefix = "enode://"
mailServerKeyName = "fd8c027e29852ef"
)
// singletons
var (
server *p2p.Server
shh *whisper.Whisper
mailServer WMailServer
done chan struct{}
input *bufio.Reader = bufio.NewReader(os.Stdin)
mailServer WMailServer
)
// encryption/decryption
// encryption
var (
symKey []byte
pub *ecdsa.PublicKey
asymKey *ecdsa.PrivateKey
nodeid *ecdsa.PrivateKey
symKey []byte
)
// parameters
var (
filterID uint32
topic whisper.TopicType
ttl uint32 = 30
workTime uint32 = 5
msPoW float64
timeLow uint32
timeUpp uint32
pow float64 = whisper.MinimumPoW
ipAddress, enode, salt, topicStr, pubStr, NodeIdFile, dbPath, msPassword string
filterID uint32
msPassword string
)
// cmd arguments
var (
bootstrapMode bool // does not actively connect to peers, wait for incoming connections
forwarderMode bool // only forward messages, neither send nor track
mailServerMode bool // delivers expired messages on demand
testMode bool // predefined password, topic, ip and port
echoMode bool // shows params, etc.
isAsymmetric bool
requestMail bool
echoMode = flag.Bool("e", false, "echo mode: prints some arguments for diagnostics")
bootstrapMode = flag.Bool("b", false, "boostrap node: don't actively connect to peers, wait for incoming connections")
forwarderMode = flag.Bool("f", false, "forwarder mode: only forward messages, neither send nor decrypt messages")
mailServerMode = flag.Bool("m", false, "mail server mode: delivers expired messages on demand")
requestMail = flag.Bool("r", false, "request expired messages from the bootstrap server")
asymmetricMode = flag.Bool("a", false, "use asymmetric encryption")
testMode = flag.Bool("t", false, "use of predefined parameters for diagnostics")
argTTL = flag.Uint("ttl", 30, "time-to-live for messages in seconds")
argWorkTime = flag.Uint("work", 5, "work time in seconds")
argPoW = flag.Float64("pow", whisper.MinimumPoW, "PoW for normal messages in float format (e.g. 2.7)")
argServerPoW = flag.Float64("mspow", whisper.MinimumPoW, "PoW requirement for Mail Server request")
argIP = flag.String("ip", "", "IP address and port of this node (e.g. 127.0.0.1:30303)")
argSalt = flag.String("salt", "", "salt (for topic and key derivation)")
argPub = flag.String("pub", "", "public key for asymmetric encryption")
argDBPath = flag.String("dbpath", "", "path to the server's DB directory")
argIDFile = flag.String("idfile", "", "file name with node id (private key)")
argEnode = flag.String("boot", "", "bootstrap node you want to connect to (e.g. enode://e454......08d50@52.176.211.200:16428)")
argTopic = flag.String("topic", "", "topic in hexadecimal format (e.g. 70a4beef)")
)
var (
argNameHelp = "-h"
argBootstrapMode = "-b"
argNameForwarder = "-f"
argNameAsymmetric = "-a"
argMailServerMode = "-m"
argRequestMail = "-r"
argNameTest = "-test"
argNameEcho = "-echo"
argNameWorkTime = "-work"
argNameTTL = "-ttl"
argNameIP = "-ip"
argNameTopic = "-topic"
argNamePoW = "-pow"
argNameSalt = "-salt"
argNamePub = "-pub"
argNameBoot = "-boot"
argNameIdSrc = "-idfile"
argNameDbPath = "-dbpath"
argNameMSPoW = "-mspow"
quitCommand = "~Q"
enodePrefix = "enode://"
)
// this is a temporary stub, will be expanded later
type WMailServer struct{}
func (s *WMailServer) Archive(env *whisper.Envelope) {}
func (s *WMailServer) DeliverMail(peer *whisper.Peer, data []byte) {}
func (s *WMailServer) Init(w *whisper.Whisper, path string, password string, pow float64) {}
func (s *WMailServer) Close() {}
func padRight(str string) string {
res := str
for len(res) < 9 {
res += " "
}
return res
}
func printHelp() {
fmt.Println("wnode is a stand-alone whisper node with command-line interface.")
fmt.Println()
fmt.Println("usage: wnode [arguments]")
fmt.Printf(" %s print this help and exit \n", padRight(argNameHelp))
fmt.Printf(" %s boostrap node: don't actively connect to peers, wait for incoming connections\n", padRight(argBootstrapMode))
fmt.Printf(" %s forwarder mode: only forward messages, neither send nor decrypt messages \n", padRight(argNameForwarder))
fmt.Printf(" %s use asymmetric encryption \n", padRight(argNameAsymmetric))
fmt.Printf(" %s mail server mode: delivers expired messages on demand \n", padRight(argMailServerMode))
fmt.Printf(" %s test mode: predefined password, salt, topic, ip and port \n", padRight(argNameTest))
fmt.Printf(" %s echo mode: prints arguments (diagnostic) \n", padRight(argNameEcho))
fmt.Printf(" %s IP address and port of this node (e.g. %s=127.0.0.1:30303) \n", padRight(argNameIP), argNameIP)
fmt.Printf(" %s time-to-live for messages in seconds (e.g. %s=30) \n", padRight(argNameTTL), argNameTTL)
fmt.Printf(" %s PoW in integer format \n", padRight(argNamePoW))
fmt.Printf(" %s work time in seconds (e.g. %s=12) \n", padRight(argNameWorkTime), argNameWorkTime)
fmt.Printf(" %s salt (for topic and key derivation) \n", padRight(argNameSalt))
fmt.Printf(" %s topic in hexadecimal format (e.g. %s=70a4beef) \n", padRight(argNameTopic), argNameTopic)
fmt.Printf(" %s public key for asymmetric encryption \n", padRight(argNamePub))
fmt.Printf(" %s file name with node id (private key) \n", padRight(argNameIdSrc))
fmt.Printf(" %s path to the DB directory \n", padRight(argNameDbPath))
fmt.Printf(" %s PoW requirement for Mail Server (int) \n", padRight(argNameMSPoW))
fmt.Printf(" %s request old (expired) messages from the bootstrap server \n", padRight(argRequestMail))
fmt.Printf(" %s bootstrap node you want to connect to (e.g. %s=enode://e454......08d50@52.176.211.200:16428) \n", padRight(argNameBoot), argNameBoot)
}
func main() {
parseArgs()
processArgs()
initialize()
run()
}
func parseArgs() {
func processArgs() {
flag.Parse()
if len(*argIDFile) > 0 {
var err error
var p, x uint32
help1 := checkMode(argNameHelp)
help2 := checkMode("-help")
help3 := checkMode("--help")
help4 := checkMode("-?")
if help1 || help2 || help3 || help4 {
printHelp()
os.Exit(0)
}
bootstrapMode = checkMode(argBootstrapMode)
forwarderMode = checkMode(argNameForwarder)
mailServerMode = checkMode(argMailServerMode)
testMode = checkMode(argNameTest)
echoMode = checkMode(argNameEcho)
isAsymmetric = checkMode(argNameAsymmetric)
requestMail = checkMode(argRequestMail)
checkIntArg(argNameTTL, &ttl)
checkIntArg(argNameWorkTime, &workTime)
checkIntArg(argNamePoW, &p)
checkIntArg(argNameMSPoW, &x)
checkStringArg(argNameIP, &ipAddress)
checkStringArg(argNameBoot, &enode)
checkStringArg(argNameSalt, &salt)
checkStringArg(argNameTopic, &topicStr)
checkStringArg(argNamePub, &pubStr)
checkStringArg(argNameIdSrc, &NodeIdFile)
checkStringArg(argNameDbPath, &dbPath)
if len(NodeIdFile) > 0 {
nodeid, err = crypto.LoadECDSA(NodeIdFile)
nodeid, err = crypto.LoadECDSA(*argIDFile)
if err != nil {
utils.Fatalf("Failed to load file [%s]: %s.", NodeIdFile, err)
utils.Fatalf("Failed to load file [%s]: %s.", *argIDFile, err)
}
}
if len(enode) > 0 {
if enode[:len(enodePrefix)] != enodePrefix {
enode = enodePrefix + enode
if len(*argEnode) > 0 {
if (*argEnode)[:len(enodePrefix)] != enodePrefix {
*argEnode = enodePrefix + *argEnode
}
}
if p > 0 {
pow = float64(p)
}
if x > 0 {
msPoW = float64(x)
}
if len(topicStr) > 0 {
var x []byte
x, err := hex.DecodeString(topicStr)
if len(*argTopic) > 0 {
x, err := hex.DecodeString(*argTopic)
if err != nil {
utils.Fatalf("Failed to parse the topic: %s", err)
}
topic = whisper.BytesToTopic(x)
}
if isAsymmetric && len(pubStr) > 0 {
pub = crypto.ToECDSAPub(common.FromHex(pubStr))
if *asymmetricMode && len(*argPub) > 0 {
pub = crypto.ToECDSAPub(common.FromHex(*argPub))
if !isKeyValid(pub) {
utils.Fatalf("invalid public key")
}
}
if echoMode {
fmt.Printf("ttl = %d \n", ttl)
fmt.Printf("workTime = %d \n", workTime)
fmt.Printf("pow = %f \n", pow)
fmt.Printf("ip = %s \n", ipAddress)
fmt.Printf("salt = %s \n", salt)
if *echoMode {
echo()
}
}
func echo() {
fmt.Printf("ttl = %d \n", *argTTL)
fmt.Printf("workTime = %d \n", *argWorkTime)
fmt.Printf("pow = %f \n", *argPoW)
fmt.Printf("mspow = %f \n", *argServerPoW)
fmt.Printf("ip = %s \n", *argIP)
fmt.Printf("salt = %s \n", *argSalt)
fmt.Printf("topic = %x \n", topic)
fmt.Printf("pub = %s \n", common.ToHex(crypto.FromECDSAPub(pub)))
fmt.Printf("boot = %s \n", enode)
}
}
func checkIntArg(pattern string, dst *uint32) {
pattern += "="
sz := len(pattern)
for _, arg := range os.Args {
if len(arg) < sz {
continue
}
prefix := arg[:sz]
if prefix == pattern {
s := arg[sz:]
i, err := strconv.ParseUint(s, 10, 0)
if err != nil {
utils.Fatalf("Failed to parse argument %s: %s", pattern, err)
}
if err == nil && i > 0 {
*dst = uint32(i)
}
return
}
}
}
func checkStringArg(pattern string, dst *string) {
pattern += "="
sz := len(pattern)
for _, arg := range os.Args {
if len(arg) < sz {
continue
}
prefix := arg[:sz]
if prefix == pattern {
s := arg[sz:]
if len(s) > 0 {
*dst = s
}
return
}
}
}
func checkMode(pattern string) bool {
for _, arg := range os.Args {
if arg == pattern {
return true
}
}
return false
fmt.Printf("idfile = %s \n", *argIDFile)
fmt.Printf("dbpath = %s \n", *argDBPath)
fmt.Printf("boot = %s \n", *argEnode)
}
func initialize() {
@ -303,39 +165,34 @@ func initialize() {
var peers []*discover.Node
var err error
if testMode {
password := []byte("this is a test password for symmetric encryption")
salt := []byte("this is a test salt for symmetric encryption")
if *testMode {
password := []byte("test password for symmetric encryption")
salt := []byte("test salt for symmetric encryption")
symKey = pbkdf2.Key(password, salt, 64, 32, sha256.New)
topic = whisper.TopicType{0xFF, 0xFF, 0xFF, 0xFF}
msPassword = "mail server test password"
}
if bootstrapMode {
if len(ipAddress) == 0 {
if testMode {
ipAddress = "127.0.0.1:30303"
} else {
fmt.Printf("Please enter your IP and port (e.g. 127.0.0.1:30303): ")
fmt.Scanln(&ipAddress)
}
if *bootstrapMode {
if len(*argIP) == 0 {
argIP = scanLineA("Please enter your IP and port (e.g. 127.0.0.1:30303): ")
}
} else {
if len(enode) == 0 {
fmt.Printf("Please enter the peer's enode: ")
fmt.Scanln(&enode)
if len(*argEnode) == 0 {
argEnode = scanLineA("Please enter the peer's enode: ")
}
peer := discover.MustParseNode(enode)
peer := discover.MustParseNode(*argEnode)
peers = append(peers, peer)
}
if mailServerMode {
if *mailServerMode && len(msPassword) == 0 {
msPassword, err = console.Stdin.PromptPassword("Please enter the Mail Server password: ")
if err != nil {
utils.Fatalf("Failed to read Mail Server password: %s", err)
}
shh = whisper.NewWhisper(&mailServer)
mailServer.Init(shh, dbPath, msPassword, msPoW)
mailServer.Init(shh, *argDBPath, msPassword, *argServerPoW)
} else {
shh = whisper.NewWhisper(nil)
}
@ -351,7 +208,7 @@ func initialize() {
MaxPeers: 128,
Name: common.MakeName("whisper-go", "5.0"),
Protocols: shh.Protocols(),
ListenAddr: ipAddress,
ListenAddr: *argIP,
NAT: nat.Any(),
BootstrapNodes: peers,
StaticNodes: peers,
@ -369,19 +226,18 @@ func startServer() {
fmt.Printf("my public key: %s \n", common.ToHex(crypto.FromECDSAPub(&asymKey.PublicKey)))
fmt.Println(server.NodeInfo().Enode)
if bootstrapMode {
if *bootstrapMode {
configureNode()
fmt.Println("Bootstrap Whisper node started")
//waitForConnection(false) // todo: review
} else {
fmt.Println("Whisper node started")
// first see if we can establish connection, then require futher user input
// first see if we can establish connection, then ask for user input
waitForConnection(true)
configureNode()
}
if !forwarderMode {
fmt.Printf("Connection is established. Please type the message. To quit type: '%s'\n", quitCommand)
if !*forwarderMode {
fmt.Printf("Please type the message. To quit type: '%s'\n", quitCommand)
}
}
@ -390,55 +246,44 @@ func isKeyValid(k *ecdsa.PublicKey) bool {
}
func configureNode() {
var i int
var s string
var err error
if forwarderMode {
if *forwarderMode {
return
}
if isAsymmetric && len(pubStr) == 0 {
pubStr = scanLine("Please enter the peer's public key: ")
pub = crypto.ToECDSAPub(common.FromHex(pubStr))
if *asymmetricMode && len(*argPub) == 0 {
s := scanLine("Please enter the peer's public key: ")
pub = crypto.ToECDSAPub(common.FromHex(s))
if !isKeyValid(pub) {
utils.Fatalf("Error: invalid public key")
}
}
if !isAsymmetric && !testMode && !forwarderMode {
if !*asymmetricMode && !*forwarderMode && !*testMode {
pass, err := console.Stdin.PromptPassword("Please enter the password: ")
if err != nil {
utils.Fatalf("Failed to read passphrase: %v", err)
}
if len(salt) == 0 {
salt = scanLine("Please enter the salt: ")
if len(*argSalt) == 0 {
argSalt = scanLineA("Please enter the salt: ")
}
symKey = pbkdf2.Key([]byte(pass), []byte(salt), 65356, 32, sha256.New)
symKey = pbkdf2.Key([]byte(pass), []byte(*argSalt), 65356, 32, sha256.New)
if len(topicStr) == 0 {
generateTopic([]byte(pass), []byte(salt))
if len(*argTopic) == 0 {
generateTopic([]byte(pass), []byte(*argSalt))
}
}
if mailServerMode {
if len(dbPath) == 0 {
dbPath = scanLine("Please enter the path to DB file: ")
}
if msPoW == 0.0 {
s = scanLine("Please enter the PoW requirement for the Mail Server (int): ")
i, err = strconv.Atoi(s)
if err != nil {
utils.Fatalf("Fail to parse the PoW: %s", err)
}
msPoW = float64(i)
if *mailServerMode {
if len(*argDBPath) == 0 {
argDBPath = scanLineA("Please enter the path to DB file: ")
}
}
if requestMail {
if *requestMail && len(msPassword) == 0 {
msPassword, err = console.Stdin.PromptPassword("Please enter the Mail Server password: ")
if err != nil {
utils.Fatalf("Failed to read Mail Server password: %s", err)
@ -485,11 +330,11 @@ func run() {
shh.Start(nil)
defer shh.Stop()
if !forwarderMode {
if !*forwarderMode {
go messageLoop()
}
if requestMail {
if *requestMail {
requestExpiredMessagesLoop()
} else {
sendLoop()
@ -506,7 +351,7 @@ func sendLoop() {
}
sendMsg([]byte(s))
if isAsymmetric {
if *asymmetricMode {
// print your own message for convenience,
// because in asymmetric mode it is impossible to decrypt it
hour, min, sec := time.Now().Clock()
@ -520,12 +365,26 @@ func scanLine(prompt string) string {
if len(prompt) > 0 {
fmt.Print(prompt)
}
//txt, err := console.Stdin.PromptInput(prompt) // todo: delete
txt, err := input.ReadString('\n')
if err != nil {
utils.Fatalf("input error: %s", err)
}
return strings.TrimRight(txt, "\n\r")
txt = strings.TrimRight(txt, "\n\r")
return txt
}
func scanLineA(prompt string) *string {
s := scanLine(prompt)
return &s
}
func scanUint(prompt string) uint32 {
s := scanLine(prompt)
i, err := strconv.Atoi(s)
if err != nil {
utils.Fatalf("Fail to parse the lower time limit: %s", err)
}
return uint32(i)
}
func sendMsg(payload []byte) {
@ -535,9 +394,9 @@ func sendMsg(payload []byte) {
KeySym: symKey,
Payload: payload,
Topic: topic,
TTL: ttl,
PoW: pow,
WorkTime: workTime,
TTL: uint32(*argTTL),
PoW: *argPoW,
WorkTime: uint32(*argWorkTime),
}
msg := whisper.NewSentMessage(&params)
@ -592,39 +451,33 @@ func printMessageInfo(msg *whisper.ReceivedMessage) {
func requestExpiredMessagesLoop() {
var key, peerID []byte
err := shh.AddSymKey(argRequestMail, []byte(msPassword))
var timeLow, timeUpp, t uint32
err := shh.AddSymKey(mailServerKeyName, []byte(msPassword))
if err != nil {
utils.Fatalf("Failed to create symmetric key for mail request: %s", err)
}
key = shh.GetSymKey(argRequestMail)
peerID = extractIdFromEnode(enode)
key = shh.GetSymKey(mailServerKeyName)
peerID = extractIdFromEnode(*argEnode)
shh.MarkPeerTrusted(peerID)
for {
s := scanLine("Please enter the lower limit for the time range (unix timestamp): ")
i, err := strconv.Atoi(s)
if err != nil {
utils.Fatalf("Fail to parse the lower time limit: %s", err)
}
timeLow = uint32(i)
s = scanLine("Please enter the upper limit for the time range (unix timestamp): ")
i, err = strconv.Atoi(s)
if err != nil {
utils.Fatalf("Fail to parse the upper time limit: %s", err)
}
timeUpp = uint32(i)
timeLow = scanUint("Please enter the lower limit of the time range (unix timestamp): ")
timeUpp = scanUint("Please enter the upper limit of the time range (unix timestamp): ")
t = scanUint("Please enter the topic: ")
if timeUpp == 0 {
timeUpp = 0xFFFFFFFF
}
data := make([]byte, sizeOfInt*2)
data := make([]byte, sizeOfInt*3)
binary.BigEndian.PutUint32(data, timeLow)
binary.BigEndian.PutUint32(data[sizeOfInt:], timeUpp)
// todo: add topic
binary.BigEndian.PutUint32(data[sizeOfInt*2:], t)
if t == 0 {
data = data[:sizeOfInt*2]
}
var params whisper.MessageParams
params.PoW = msPoW
params.PoW = *argServerPoW
params.Payload = data
params.KeySym = key
params.Src = nodeid
@ -673,3 +526,11 @@ func extractIdFromEnode(s string) []byte {
return b
}
// this is a temporary stub, will be expanded later
type WMailServer struct{}
func (s *WMailServer) Archive(env *whisper.Envelope) {}
func (s *WMailServer) DeliverMail(peer *whisper.Peer, data []byte) {}
func (s *WMailServer) Init(w *whisper.Whisper, path string, password string, pow float64) {}
func (s *WMailServer) Close() {}