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Geth-Modification
Unverified Commit d54f2f2e authored by Guillaume Ballet's avatar Guillaume Ballet Committed by GitHub
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whisper: remove whisper (#21487) 

* whisper: remove whisper

* Update cmd/geth/config.go
Co-authored-by: 's avatarMarius van der Wijden <m.vanderwijden@live.de>

* cmd/geth: warn on enabling whisper + remove more whisper deps

* mobile: remove all whisper references
Co-authored-by: 's avatarMarius van der Wijden <m.vanderwijden@live.de>
Co-authored-by: 's avatarMartin Holst Swende <martin@swende.se>
parent c5d28f0b
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Showing with 17 additions and 7894 deletions
cmd/geth/config.go
View file @ d54f2f2e
......@@ -29,9 +29,9 @@ import (
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/internal/ethapi"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/params"
whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
"github.com/naoina/toml"
)
......@@ -75,7 +75,6 @@ type ethstatsConfig struct {
type gethConfig struct {
Eth eth.Config
Shh whisper.Config
Node node.Config
Ethstats ethstatsConfig
}
......@@ -110,7 +109,6 @@ func makeConfigNode(ctx *cli.Context) (*node.Node, gethConfig) {
// Load defaults.
cfg := gethConfig{
Eth: eth.DefaultConfig,
Shh: whisper.DefaultConfig,
Node: defaultNodeConfig(),
}
......@@ -131,19 +129,18 @@ func makeConfigNode(ctx *cli.Context) (*node.Node, gethConfig) {
if ctx.GlobalIsSet(utils.EthStatsURLFlag.Name) {
cfg.Ethstats.URL = ctx.GlobalString(utils.EthStatsURLFlag.Name)
}
utils.SetShhConfig(ctx, stack, &cfg.Shh)
utils.SetShhConfig(ctx, stack)
return stack, cfg
}
// enableWhisper returns true in case one of the whisper flags is set.
func enableWhisper(ctx *cli.Context) bool {
func checkWhisper(ctx *cli.Context) {
for _, flag := range whisperFlags {
if ctx.GlobalIsSet(flag.GetName()) {
return true
log.Warn("deprecated whisper flag detected. Whisper has been moved to github.com/ethereum/whisper")
}
}
return false
}
// makeFullNode loads geth configuration and creates the Ethereum backend.
......@@ -152,21 +149,7 @@ func makeFullNode(ctx *cli.Context) (*node.Node, ethapi.Backend) {
backend := utils.RegisterEthService(stack, &cfg.Eth)
// Whisper must be explicitly enabled by specifying at least 1 whisper flag or in dev mode
shhEnabled := enableWhisper(ctx)
shhAutoEnabled := !ctx.GlobalIsSet(utils.WhisperEnabledFlag.Name) && ctx.GlobalIsSet(utils.DeveloperFlag.Name)
if shhEnabled || shhAutoEnabled {
if ctx.GlobalIsSet(utils.WhisperMaxMessageSizeFlag.Name) {
cfg.Shh.MaxMessageSize = uint32(ctx.Int(utils.WhisperMaxMessageSizeFlag.Name))
}
if ctx.GlobalIsSet(utils.WhisperMinPOWFlag.Name) {
cfg.Shh.MinimumAcceptedPOW = ctx.Float64(utils.WhisperMinPOWFlag.Name)
}
if ctx.GlobalIsSet(utils.WhisperRestrictConnectionBetweenLightClientsFlag.Name) {
cfg.Shh.RestrictConnectionBetweenLightClients = true
}
utils.RegisterShhService(stack, &cfg.Shh)
}
checkWhisper(ctx)
// Configure GraphQL if requested
if ctx.GlobalIsSet(utils.GraphQLEnabledFlag.Name) {
utils.RegisterGraphQLService(stack, backend, cfg.Node)
......
cmd/geth/consolecmd_test.go
View file @ d54f2f2e
......@@ -31,7 +31,7 @@ import (
)
const (
ipcAPIs = "admin:1.0 debug:1.0 eth:1.0 ethash:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 shh:1.0 txpool:1.0 web3:1.0"
ipcAPIs = "admin:1.0 debug:1.0 eth:1.0 ethash:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 txpool:1.0 web3:1.0"
httpAPIs = "eth:1.0 net:1.0 rpc:1.0 web3:1.0"
)
......@@ -43,7 +43,7 @@ func TestConsoleWelcome(t *testing.T) {
// Start a geth console, make sure it's cleaned up and terminate the console
geth := runGeth(t,
"--port", "0", "--maxpeers", "0", "--nodiscover", "--nat", "none",
"--etherbase", coinbase, "--shh",
"--etherbase", coinbase,
"console")
// Gather all the infos the welcome message needs to contain
......@@ -83,11 +83,9 @@ func TestIPCAttachWelcome(t *testing.T) {
defer os.RemoveAll(ws)
ipc = filepath.Join(ws, "geth.ipc")
}
// Note: we need --shh because testAttachWelcome checks for default
// list of ipc modules and shh is included there.
geth := runGeth(t,
"--port", "0", "--maxpeers", "0", "--nodiscover", "--nat", "none",
"--etherbase", coinbase, "--shh", "--ipcpath", ipc)
"--etherbase", coinbase, "--ipcpath", ipc)
defer func() {
geth.Interrupt()
......
cmd/geth/usage.go
View file @ d54f2f2e
......@@ -211,7 +211,7 @@ var AppHelpFlagGroups = []flags.FlagGroup{
Flags: metricsFlags,
},
{
Name: "WHISPER (EXPERIMENTAL)",
Name: "WHISPER (deprecated)",
Flags: whisperFlags,
},
{
......
cmd/utils/flags.go
View file @ d54f2f2e
......@@ -63,7 +63,6 @@ import (
"github.com/ethereum/go-ethereum/p2p/nat"
"github.com/ethereum/go-ethereum/p2p/netutil"
"github.com/ethereum/go-ethereum/params"
whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
pcsclite "github.com/gballet/go-libpcsclite"
cli "gopkg.in/urfave/cli.v1"
)
......@@ -639,12 +638,12 @@ var (
WhisperMaxMessageSizeFlag = cli.IntFlag{
Name: "shh.maxmessagesize",
Usage: "Max message size accepted",
Value: int(whisper.DefaultMaxMessageSize),
Value: 1024 * 1024,
}
WhisperMinPOWFlag = cli.Float64Flag{
Name: "shh.pow",
Usage: "Minimum POW accepted",
Value: whisper.DefaultMinimumPoW,
Value: 0.2,
}
WhisperRestrictConnectionBetweenLightClientsFlag = cli.BoolFlag{
Name: "shh.restrict-light",
......@@ -1465,15 +1464,12 @@ func CheckExclusive(ctx *cli.Context, args ...interface{}) {
}
// SetShhConfig applies shh-related command line flags to the config.
func SetShhConfig(ctx *cli.Context, stack *node.Node, cfg *whisper.Config) {
if ctx.GlobalIsSet(WhisperMaxMessageSizeFlag.Name) {
cfg.MaxMessageSize = uint32(ctx.GlobalUint(WhisperMaxMessageSizeFlag.Name))
}
if ctx.GlobalIsSet(WhisperMinPOWFlag.Name) {
cfg.MinimumAcceptedPOW = ctx.GlobalFloat64(WhisperMinPOWFlag.Name)
}
if ctx.GlobalIsSet(WhisperRestrictConnectionBetweenLightClientsFlag.Name) {
cfg.RestrictConnectionBetweenLightClients = true
func SetShhConfig(ctx *cli.Context, stack *node.Node) {
if ctx.GlobalIsSet(WhisperEnabledFlag.Name) ||
ctx.GlobalIsSet(WhisperMaxMessageSizeFlag.Name) ||
ctx.GlobalIsSet(WhisperMinPOWFlag.Name) ||
ctx.GlobalIsSet(WhisperRestrictConnectionBetweenLightClientsFlag.Name) {
log.Warn("Whisper support has been deprecated and the code has been moved to github.com/ethereum/whisper")
}
}
......@@ -1697,13 +1693,6 @@ func RegisterEthService(stack *node.Node, cfg *eth.Config) ethapi.Backend {
}
}
// RegisterShhService configures Whisper and adds it to the given node.
func RegisterShhService(stack *node.Node, cfg *whisper.Config) {
if _, err := whisper.New(stack, cfg); err != nil {
Fatalf("Failed to register the Whisper service: %v", err)
}
}
// RegisterEthStatsService configures the Ethereum Stats daemon and adds it to
// the given node.
func RegisterEthStatsService(stack *node.Node, backend ethapi.Backend, url string) {
......
cmd/wnode/main.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2017 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
// This is a simple Whisper node. It could be used as a stand-alone bootstrap node.
// Also, could be used for different test and diagnostics purposes.
package main
import (
"bufio"
"crypto/ecdsa"
crand "crypto/rand"
"crypto/sha512"
"encoding/binary"
"encoding/hex"
"flag"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strconv"
"strings"
"time"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/console/prompt"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/p2p/nat"
"github.com/ethereum/go-ethereum/whisper/mailserver"
whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
"golang.org/x/crypto/pbkdf2"
)
const quitCommand = "~Q"
const entropySize = 32
// singletons
var (
server *p2p.Server
shh *whisper.Whisper
done chan struct{}
mailServer mailserver.WMailServer
entropy [entropySize]byte
input = bufio.NewReader(os.Stdin)
)
// encryption
var (
symKey []byte
pub *ecdsa.PublicKey
asymKey *ecdsa.PrivateKey
nodeid *ecdsa.PrivateKey
topic whisper.TopicType
asymKeyID string
asymFilterID string
symFilterID string
symPass string
msPassword string
)
// cmd arguments
var (
bootstrapMode = flag.Bool("standalone", false, "boostrap node: don't initiate connection to peers, just wait for incoming connections")
forwarderMode = flag.Bool("forwarder", false, "forwarder mode: only forward messages, neither encrypt nor decrypt messages")
mailServerMode = flag.Bool("mailserver", false, "mail server mode: delivers expired messages on demand")
requestMail = flag.Bool("mailclient", false, "request expired messages from the bootstrap server")
asymmetricMode = flag.Bool("asym", false, "use asymmetric encryption")
generateKey = flag.Bool("generatekey", false, "generate and show the private key")
fileExMode = flag.Bool("fileexchange", false, "file exchange mode")
fileReader = flag.Bool("filereader", false, "load and decrypt messages saved as files, display as plain text")
testMode = flag.Bool("test", false, "use of predefined parameters for diagnostics (password, etc.)")
echoMode = flag.Bool("echo", false, "echo mode: prints some arguments for diagnostics")
argVerbosity = flag.Int("verbosity", int(log.LvlError), "log verbosity level")
argTTL = flag.Uint("ttl", 30, "time-to-live for messages in seconds")
argWorkTime = flag.Uint("work", 5, "work time in seconds")
argMaxSize = flag.Uint("maxsize", uint(whisper.DefaultMaxMessageSize), "max size of message")
argPoW = flag.Float64("pow", whisper.DefaultMinimumPoW, "PoW for normal messages in float format (e.g. 2.7)")
argServerPoW = flag.Float64("mspow", whisper.DefaultMinimumPoW, "PoW requirement for Mail Server request")
argIP = flag.String("ip", "", "IP address and port of this node (e.g. 127.0.0.1:30303)")
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)")
argSaveDir = flag.String("savedir", "", "directory where all incoming messages will be saved as files")
)
func main() {
processArgs()
initialize()
run()
shutdown()
}
func processArgs() {
flag.Parse()
if len(*argIDFile) > 0 {
var err error
nodeid, err = crypto.LoadECDSA(*argIDFile)
if err != nil {
utils.Fatalf("Failed to load file [%s]: %s.", *argIDFile, err)
}
}
const enodePrefix = "enode://"
if len(*argEnode) > 0 {
if (*argEnode)[:len(enodePrefix)] != enodePrefix {
*argEnode = enodePrefix + *argEnode
}
}
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 *asymmetricMode && len(*argPub) > 0 {
var err error
if pub, err = crypto.UnmarshalPubkey(common.FromHex(*argPub)); err != nil {
utils.Fatalf("invalid public key")
}
}
if len(*argSaveDir) > 0 {
if _, err := os.Stat(*argSaveDir); os.IsNotExist(err) {
utils.Fatalf("Download directory '%s' does not exist", *argSaveDir)
}
} else if *fileExMode {
utils.Fatalf("Parameter 'savedir' is mandatory for file exchange mode")
}
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("pub = %s \n", hexutil.Encode(crypto.FromECDSAPub(pub)))
fmt.Printf("idfile = %s \n", *argIDFile)
fmt.Printf("dbpath = %s \n", *argDBPath)
fmt.Printf("boot = %s \n", *argEnode)
}
func initialize() {
log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(*argVerbosity), log.StreamHandler(os.Stderr, log.TerminalFormat(false))))
done = make(chan struct{})
var peers []*enode.Node
var err error
if *generateKey {
key, err := crypto.GenerateKey()
if err != nil {
utils.Fatalf("Failed to generate private key: %s", err)
}
k := hex.EncodeToString(crypto.FromECDSA(key))
fmt.Printf("Random private key: %s \n", k)
os.Exit(0)
}
if *testMode {
symPass = "wwww" // ascii code: 0x77777777
msPassword = "wwww"
}
if *bootstrapMode {
if len(*argIP) == 0 {
argIP = scanLineA("Please enter your IP and port (e.g. 127.0.0.1:30348): ")
}
} else if *fileReader {
*bootstrapMode = true
} else {
if len(*argEnode) == 0 {
argEnode = scanLineA("Please enter the peer's enode: ")
}
peer := enode.MustParse(*argEnode)
peers = append(peers, peer)
}
if *mailServerMode {
if len(msPassword) == 0 {
msPassword, err = prompt.Stdin.PromptPassword("Please enter the Mail Server password: ")
if err != nil {
utils.Fatalf("Failed to read Mail Server password: %s", err)
}
}
}
cfg := &whisper.Config{
MaxMessageSize: uint32(*argMaxSize),
MinimumAcceptedPOW: *argPoW,
}
shh = whisper.StandaloneWhisperService(cfg)
if *argPoW != whisper.DefaultMinimumPoW {
err := shh.SetMinimumPoW(*argPoW)
if err != nil {
utils.Fatalf("Failed to set PoW: %s", err)
}
}
if uint32(*argMaxSize) != whisper.DefaultMaxMessageSize {
err := shh.SetMaxMessageSize(uint32(*argMaxSize))
if err != nil {
utils.Fatalf("Failed to set max message size: %s", err)
}
}
asymKeyID, err = shh.NewKeyPair()
if err != nil {
utils.Fatalf("Failed to generate a new key pair: %s", err)
}
asymKey, err = shh.GetPrivateKey(asymKeyID)
if err != nil {
utils.Fatalf("Failed to retrieve a new key pair: %s", err)
}
if nodeid == nil {
tmpID, err := shh.NewKeyPair()
if err != nil {
utils.Fatalf("Failed to generate a new key pair: %s", err)
}
nodeid, err = shh.GetPrivateKey(tmpID)
if err != nil {
utils.Fatalf("Failed to retrieve a new key pair: %s", err)
}
}
maxPeers := 80
if *bootstrapMode {
maxPeers = 800
}
_, err = crand.Read(entropy[:])
if err != nil {
utils.Fatalf("crypto/rand failed: %s", err)
}
if *mailServerMode {
shh.RegisterServer(&mailServer)
if err := mailServer.Init(shh, *argDBPath, msPassword, *argServerPoW); err != nil {
utils.Fatalf("Failed to init MailServer: %s", err)
}
}
server = &p2p.Server{
Config: p2p.Config{
PrivateKey: nodeid,
MaxPeers: maxPeers,
Name: common.MakeName("wnode", "6.0"),
Protocols: shh.Protocols(),
ListenAddr: *argIP,
NAT: nat.Any(),
BootstrapNodes: peers,
StaticNodes: peers,
TrustedNodes: peers,
},
}
}
func startServer() error {
err := server.Start()
if err != nil {
fmt.Printf("Failed to start Whisper peer: %s.", err)
return err
}
fmt.Printf("my public key: %s \n", hexutil.Encode(crypto.FromECDSAPub(&asymKey.PublicKey)))
fmt.Println(server.NodeInfo().Enode)
if *bootstrapMode {
configureNode()
fmt.Println("Bootstrap Whisper node started")
} else {
fmt.Println("Whisper node started")
// first see if we can establish connection, then ask for user input
waitForConnection(true)
configureNode()
}
if *fileExMode {
fmt.Printf("Please type the file name to be send. To quit type: '%s'\n", quitCommand)
} else if *fileReader {
fmt.Printf("Please type the file name to be decrypted. To quit type: '%s'\n", quitCommand)
} else if !*forwarderMode {
fmt.Printf("Please type the message. To quit type: '%s'\n", quitCommand)
}
return nil
}
func configureNode() {
var err error
var p2pAccept bool
if *forwarderMode {
return
}
if *asymmetricMode {
if len(*argPub) == 0 {
s := scanLine("Please enter the peer's public key: ")
b := common.FromHex(s)
if b == nil {
utils.Fatalf("Error: can not convert hexadecimal string")
}
if pub, err = crypto.UnmarshalPubkey(b); err != nil {
utils.Fatalf("Error: invalid peer public key")
}
}
}
if *requestMail {
p2pAccept = true
if len(msPassword) == 0 {
msPassword, err = prompt.Stdin.PromptPassword("Please enter the Mail Server password: ")
if err != nil {
utils.Fatalf("Failed to read Mail Server password: %s", err)
}
}
}
if !*asymmetricMode && !*forwarderMode {
if len(symPass) == 0 {
symPass, err = prompt.Stdin.PromptPassword("Please enter the password for symmetric encryption: ")
if err != nil {
utils.Fatalf("Failed to read password: %v", err)
}
}
symKeyID, err := shh.AddSymKeyFromPassword(symPass)
if err != nil {
utils.Fatalf("Failed to create symmetric key: %s", err)
}
symKey, err = shh.GetSymKey(symKeyID)
if err != nil {
utils.Fatalf("Failed to save symmetric key: %s", err)
}
if len(*argTopic) == 0 {
generateTopic([]byte(symPass))
}
fmt.Printf("Filter is configured for the topic: %x \n", topic)
}
if *mailServerMode {
if len(*argDBPath) == 0 {
argDBPath = scanLineA("Please enter the path to DB file: ")
}
}
symFilter := whisper.Filter{
KeySym: symKey,
Topics: [][]byte{topic[:]},
AllowP2P: p2pAccept,
}
symFilterID, err = shh.Subscribe(&symFilter)
if err != nil {
utils.Fatalf("Failed to install filter: %s", err)
}
asymFilter := whisper.Filter{
KeyAsym: asymKey,
Topics: [][]byte{topic[:]},
AllowP2P: p2pAccept,
}
asymFilterID, err = shh.Subscribe(&asymFilter)
if err != nil {
utils.Fatalf("Failed to install filter: %s", err)
}
}
func generateTopic(password []byte) {
x := pbkdf2.Key(password, password, 4096, 128, sha512.New)
for i := 0; i < len(x); i++ {
topic[i%whisper.TopicLength] ^= x[i]
}
}
func waitForConnection(timeout bool) {
var cnt int
var connected bool
for !connected {
time.Sleep(time.Millisecond * 50)
connected = server.PeerCount() > 0
if timeout {
cnt++
if cnt > 1000 {
utils.Fatalf("Timeout expired, failed to connect")
}
}
}
fmt.Println("Connected to peer.")
}
func run() {
err := startServer()
if err != nil {
return
}
defer server.Stop()
shh.Start()
defer shh.Stop()
if !*forwarderMode {
go messageLoop()
}
if *requestMail {
requestExpiredMessagesLoop()
} else if *fileExMode {
sendFilesLoop()
} else if *fileReader {
fileReaderLoop()
} else {
sendLoop()
}
}
func shutdown() {
close(done)
mailServer.Close()
}
func sendLoop() {
for {
s := scanLine("")
if s == quitCommand {
fmt.Println("Quit command received")
return
}
sendMsg([]byte(s))
if *asymmetricMode {
// print your own message for convenience,
// because in asymmetric mode it is impossible to decrypt it
timestamp := time.Now().Unix()
from := crypto.PubkeyToAddress(asymKey.PublicKey)
fmt.Printf("\n%d <%x>: %s\n", timestamp, from, s)
}
}
}
func sendFilesLoop() {
for {
s := scanLine("")
if s == quitCommand {
fmt.Println("Quit command received")
return
}
b, err := ioutil.ReadFile(s)
if err != nil {
fmt.Printf(">>> Error: %s \n", err)
} else {
h := sendMsg(b)
if (h == common.Hash{}) {
fmt.Printf(">>> Error: message was not sent \n")
} else {
timestamp := time.Now().Unix()
from := crypto.PubkeyToAddress(asymKey.PublicKey)
fmt.Printf("\n%d <%x>: sent message with hash %x\n", timestamp, from, h)
}
}
}
}
func fileReaderLoop() {
watcher1 := shh.GetFilter(symFilterID)
watcher2 := shh.GetFilter(asymFilterID)
if watcher1 == nil && watcher2 == nil {
fmt.Println("Error: neither symmetric nor asymmetric filter is installed")
return
}
for {
s := scanLine("")
if s == quitCommand {
fmt.Println("Quit command received")
return
}
raw, err := ioutil.ReadFile(s)
if err != nil {
fmt.Printf(">>> Error: %s \n", err)
} else {
env := whisper.Envelope{Data: raw} // the topic is zero
msg := env.Open(watcher1) // force-open envelope regardless of the topic
if msg == nil {
msg = env.Open(watcher2)
}
if msg == nil {
fmt.Printf(">>> Error: failed to decrypt the message \n")
} else {
printMessageInfo(msg)
}
}
}
}
func scanLine(prompt string) string {
if len(prompt) > 0 {
fmt.Print(prompt)
}
txt, err := input.ReadString('\n')
if err != nil {
utils.Fatalf("input error: %s", err)
}
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) common.Hash {
params := whisper.MessageParams{
Src: asymKey,
Dst: pub,
KeySym: symKey,
Payload: payload,
Topic: topic,
TTL: uint32(*argTTL),
PoW: *argPoW,
WorkTime: uint32(*argWorkTime),
}
msg, err := whisper.NewSentMessage(&params)
if err != nil {
utils.Fatalf("failed to create new message: %s", err)
}
envelope, err := msg.Wrap(&params)
if err != nil {
fmt.Printf("failed to seal message: %v \n", err)
return common.Hash{}
}
err = shh.Send(envelope)
if err != nil {
fmt.Printf("failed to send message: %v \n", err)
return common.Hash{}
}
return envelope.Hash()
}
func messageLoop() {
sf := shh.GetFilter(symFilterID)
if sf == nil {
utils.Fatalf("symmetric filter is not installed")
}
af := shh.GetFilter(asymFilterID)
if af == nil {
utils.Fatalf("asymmetric filter is not installed")
}
ticker := time.NewTicker(time.Millisecond * 50)
defer ticker.Stop()
for {
select {
case <-ticker.C:
m1 := sf.Retrieve()
m2 := af.Retrieve()
messages := append(m1, m2...)
for _, msg := range messages {
reportedOnce := false
if !*fileExMode && len(msg.Payload) <= 2048 {
printMessageInfo(msg)
reportedOnce = true
}
// All messages are saved upon specifying argSaveDir.
// fileExMode only specifies how messages are displayed on the console after they are saved.
// if fileExMode == true, only the hashes are displayed, since messages might be too big.
if len(*argSaveDir) > 0 {
writeMessageToFile(*argSaveDir, msg, !reportedOnce)
}
}
case <-done:
return
}
}
}
func printMessageInfo(msg *whisper.ReceivedMessage) {
timestamp := fmt.Sprintf("%d", msg.Sent) // unix timestamp for diagnostics
text := string(msg.Payload)
var address common.Address
if msg.Src != nil {
address = crypto.PubkeyToAddress(*msg.Src)
}
if whisper.IsPubKeyEqual(msg.Src, &asymKey.PublicKey) {
fmt.Printf("\n%s <%x>: %s\n", timestamp, address, text) // message from myself
} else {
fmt.Printf("\n%s [%x]: %s\n", timestamp, address, text) // message from a peer
}
}
func writeMessageToFile(dir string, msg *whisper.ReceivedMessage, show bool) {
if len(dir) == 0 {
return
}
timestamp := fmt.Sprintf("%d", msg.Sent)
name := fmt.Sprintf("%x", msg.EnvelopeHash)
var address common.Address
if msg.Src != nil {
address = crypto.PubkeyToAddress(*msg.Src)
}
env := shh.GetEnvelope(msg.EnvelopeHash)
if env == nil {
fmt.Printf("\nUnexpected error: envelope not found: %x\n", msg.EnvelopeHash)
return
}
// this is a sample code; uncomment if you don't want to save your own messages.
//if whisper.IsPubKeyEqual(msg.Src, &asymKey.PublicKey) {
// fmt.Printf("\n%s <%x>: message from myself received, not saved: '%s'\n", timestamp, address, name)
// return
//}
fullpath := filepath.Join(dir, name)
err := ioutil.WriteFile(fullpath, env.Data, 0644)
if err != nil {
fmt.Printf("\n%s {%x}: message received but not saved: %s\n", timestamp, address, err)
} else if show {
fmt.Printf("\n%s {%x}: message received and saved as '%s' (%d bytes)\n", timestamp, address, name, len(env.Data))
}
}
func requestExpiredMessagesLoop() {
var key, peerID, bloom []byte
var timeLow, timeUpp uint32
var t string
var xt whisper.TopicType
keyID, err := shh.AddSymKeyFromPassword(msPassword)
if err != nil {
utils.Fatalf("Failed to create symmetric key for mail request: %s", err)
}
key, err = shh.GetSymKey(keyID)
if err != nil {
utils.Fatalf("Failed to save symmetric key for mail request: %s", err)
}
peerID = extractIDFromEnode(*argEnode)
shh.AllowP2PMessagesFromPeer(peerID)
for {
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 = scanLine("Enter the topic (hex). Press enter to request all messages, regardless of the topic: ")
if len(t) == whisper.TopicLength*2 {
x, err := hex.DecodeString(t)
if err != nil {
fmt.Printf("Failed to parse the topic: %s \n", err)
continue
}
xt = whisper.BytesToTopic(x)
bloom = whisper.TopicToBloom(xt)
obfuscateBloom(bloom)
} else if len(t) == 0 {
bloom = whisper.MakeFullNodeBloom()
} else {
fmt.Println("Error: topic is invalid, request aborted")
continue
}
if timeUpp == 0 {
timeUpp = 0xFFFFFFFF
}
data := make([]byte, 8, 8+whisper.BloomFilterSize)
binary.BigEndian.PutUint32(data, timeLow)
binary.BigEndian.PutUint32(data[4:], timeUpp)
data = append(data, bloom...)
var params whisper.MessageParams
params.PoW = *argServerPoW
params.Payload = data
params.KeySym = key
params.Src = asymKey
params.WorkTime = 5
msg, err := whisper.NewSentMessage(&params)
if err != nil {
utils.Fatalf("failed to create new message: %s", err)
}
env, err := msg.Wrap(&params)
if err != nil {
utils.Fatalf("Wrap failed: %s", err)
}
err = shh.RequestHistoricMessages(peerID, env)
if err != nil {
utils.Fatalf("Failed to send P2P message: %s", err)
}
time.Sleep(time.Second * 5)
}
}
func extractIDFromEnode(s string) []byte {
n, err := enode.Parse(enode.ValidSchemes, s)
if err != nil {
utils.Fatalf("Failed to parse node: %s", err)
}
return n.ID().Bytes()
}
// obfuscateBloom adds 16 random bits to the bloom
// filter, in order to obfuscate the containing topics.
// it does so deterministically within every session.
// despite additional bits, it will match on average
// 32000 times less messages than full node's bloom filter.
func obfuscateBloom(bloom []byte) {
const half = entropySize / 2
for i := 0; i < half; i++ {
x := int(entropy[i])
if entropy[half+i] < 128 {
x += 256
}
bloom[x/8] = 1 << uint(x%8) // set the bit number X
}
}
mobile/geth.go
View file @ d54f2f2e
......@@ -35,7 +35,6 @@ import (
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/nat"
"github.com/ethereum/go-ethereum/params"
whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
)
// NodeConfig represents the collection of configuration values to fine tune the Geth
......@@ -71,9 +70,6 @@ type NodeConfig struct {
// It has the form "nodename:secret@host:port"
EthereumNetStats string
// WhisperEnabled specifies whether the node should run the Whisper protocol.
WhisperEnabled bool
// Listening address of pprof server.
PprofAddress string
}
......@@ -186,12 +182,6 @@ func NewNode(datadir string, config *NodeConfig) (stack *Node, _ error) {
}
}
}
// Register the Whisper protocol if requested
if config.WhisperEnabled {
if _, err := whisper.New(rawStack, &whisper.DefaultConfig); err != nil {
return nil, fmt.Errorf("whisper init: %v", err)
}
}
return &Node{rawStack}, nil
}
......
mobile/shhclient.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// Contains a wrapper for the Whisper client.
package geth
import (
"github.com/ethereum/go-ethereum/whisper/shhclient"
whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
)
// WhisperClient provides access to the Ethereum APIs.
type WhisperClient struct {
client *shhclient.Client
}
// NewWhisperClient connects a client to the given URL.
func NewWhisperClient(rawurl string) (client *WhisperClient, _ error) {
rawClient, err := shhclient.Dial(rawurl)
return &WhisperClient{rawClient}, err
}
// GetVersion returns the Whisper sub-protocol version.
func (wc *WhisperClient) GetVersion(ctx *Context) (version string, _ error) {
return wc.client.Version(ctx.context)
}
// Info returns diagnostic information about the whisper node.
func (wc *WhisperClient) GetInfo(ctx *Context) (info *Info, _ error) {
rawInfo, err := wc.client.Info(ctx.context)
return &Info{&rawInfo}, err
}
// SetMaxMessageSize sets the maximal message size allowed by this node. Incoming
// and outgoing messages with a larger size will be rejected. Whisper message size
// can never exceed the limit imposed by the underlying P2P protocol (10 Mb).
func (wc *WhisperClient) SetMaxMessageSize(ctx *Context, size int32) error {
return wc.client.SetMaxMessageSize(ctx.context, uint32(size))
}
// SetMinimumPoW (experimental) sets the minimal PoW required by this node.
// This experimental function was introduced for the future dynamic adjustment of
// PoW requirement. If the node is overwhelmed with messages, it should raise the
// PoW requirement and notify the peers. The new value should be set relative to
// the old value (e.g. double). The old value could be obtained via shh_info call.
func (wc *WhisperClient) SetMinimumPoW(ctx *Context, pow float64) error {
return wc.client.SetMinimumPoW(ctx.context, pow)
}
// Marks specific peer trusted, which will allow it to send historic (expired) messages.
// Note This function is not adding new nodes, the node needs to exists as a peer.
func (wc *WhisperClient) MarkTrustedPeer(ctx *Context, enode string) error {
return wc.client.MarkTrustedPeer(ctx.context, enode)
}
// NewKeyPair generates a new public and private key pair for message decryption and encryption.
// It returns an identifier that can be used to refer to the key.
func (wc *WhisperClient) NewKeyPair(ctx *Context) (string, error) {
return wc.client.NewKeyPair(ctx.context)
}
// AddPrivateKey stored the key pair, and returns its ID.
func (wc *WhisperClient) AddPrivateKey(ctx *Context, key []byte) (string, error) {
return wc.client.AddPrivateKey(ctx.context, key)
}
// DeleteKeyPair delete the specifies key.
func (wc *WhisperClient) DeleteKeyPair(ctx *Context, id string) (string, error) {
return wc.client.DeleteKeyPair(ctx.context, id)
}
// HasKeyPair returns an indication if the node has a private key or
// key pair matching the given ID.
func (wc *WhisperClient) HasKeyPair(ctx *Context, id string) (bool, error) {
return wc.client.HasKeyPair(ctx.context, id)
}
// GetPublicKey return the public key for a key ID.
func (wc *WhisperClient) GetPublicKey(ctx *Context, id string) ([]byte, error) {
return wc.client.PublicKey(ctx.context, id)
}
// GetPrivateKey return the private key for a key ID.
func (wc *WhisperClient) GetPrivateKey(ctx *Context, id string) ([]byte, error) {
return wc.client.PrivateKey(ctx.context, id)
}
// NewSymmetricKey generates a random symmetric key and returns its identifier.
// Can be used encrypting and decrypting messages where the key is known to both parties.
func (wc *WhisperClient) NewSymmetricKey(ctx *Context) (string, error) {
return wc.client.NewSymmetricKey(ctx.context)
}
// AddSymmetricKey stores the key, and returns its identifier.
func (wc *WhisperClient) AddSymmetricKey(ctx *Context, key []byte) (string, error) {
return wc.client.AddSymmetricKey(ctx.context, key)
}
// GenerateSymmetricKeyFromPassword generates the key from password, stores it, and returns its identifier.
func (wc *WhisperClient) GenerateSymmetricKeyFromPassword(ctx *Context, passwd string) (string, error) {
return wc.client.GenerateSymmetricKeyFromPassword(ctx.context, passwd)
}
// HasSymmetricKey returns an indication if the key associated with the given id is stored in the node.
func (wc *WhisperClient) HasSymmetricKey(ctx *Context, id string) (bool, error) {
return wc.client.HasSymmetricKey(ctx.context, id)
}
// GetSymmetricKey returns the symmetric key associated with the given identifier.
func (wc *WhisperClient) GetSymmetricKey(ctx *Context, id string) ([]byte, error) {
return wc.client.GetSymmetricKey(ctx.context, id)
}
// DeleteSymmetricKey deletes the symmetric key associated with the given identifier.
func (wc *WhisperClient) DeleteSymmetricKey(ctx *Context, id string) error {
return wc.client.DeleteSymmetricKey(ctx.context, id)
}
// Post a message onto the network.
func (wc *WhisperClient) Post(ctx *Context, message *NewMessage) (string, error) {
return wc.client.Post(ctx.context, *message.newMessage)
}
// NewHeadHandler is a client-side subscription callback to invoke on events and
// subscription failure.
type NewMessageHandler interface {
OnNewMessage(message *Message)
OnError(failure string)
}
// SubscribeMessages subscribes to messages that match the given criteria. This method
// is only supported on bi-directional connections such as websockets and IPC.
// NewMessageFilter uses polling and is supported over HTTP.
func (wc *WhisperClient) SubscribeMessages(ctx *Context, criteria *Criteria, handler NewMessageHandler, buffer int) (*Subscription, error) {
// Subscribe to the event internally
ch := make(chan *whisper.Message, buffer)
rawSub, err := wc.client.SubscribeMessages(ctx.context, *criteria.criteria, ch)
if err != nil {
return nil, err
}
// Start up a dispatcher to feed into the callback
go func() {
for {
select {
case message := <-ch:
handler.OnNewMessage(&Message{message})
case err := <-rawSub.Err():
if err != nil {
handler.OnError(err.Error())
}
return
}
}
}()
return &Subscription{rawSub}, nil
}
// NewMessageFilter creates a filter within the node. This filter can be used to poll
// for new messages (see FilterMessages) that satisfy the given criteria. A filter can
// timeout when it was polled for in whisper.filterTimeout.
func (wc *WhisperClient) NewMessageFilter(ctx *Context, criteria *Criteria) (string, error) {
return wc.client.NewMessageFilter(ctx.context, *criteria.criteria)
}
// DeleteMessageFilter removes the filter associated with the given id.
func (wc *WhisperClient) DeleteMessageFilter(ctx *Context, id string) error {
return wc.client.DeleteMessageFilter(ctx.context, id)
}
// GetFilterMessages retrieves all messages that are received between the last call to
// this function and match the criteria that where given when the filter was created.
func (wc *WhisperClient) GetFilterMessages(ctx *Context, id string) (*Messages, error) {
rawFilterMessages, err := wc.client.FilterMessages(ctx.context, id)
if err != nil {
return nil, err
}
res := make([]*whisper.Message, len(rawFilterMessages))
copy(res, rawFilterMessages)
return &Messages{res}, nil
}
mobile/types.go
View file @ d54f2f2e
......@@ -26,7 +26,6 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/rlp"
whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
)
// A Nonce is a 64-bit hash which proves (combined with the mix-hash) that
......@@ -345,95 +344,3 @@ func (r *Receipt) GetLogs() *Logs { return &Logs{r.receipt.Logs} }
func (r *Receipt) GetTxHash() *Hash { return &Hash{r.receipt.TxHash} }
func (r *Receipt) GetContractAddress() *Address { return &Address{r.receipt.ContractAddress} }
func (r *Receipt) GetGasUsed() int64 { return int64(r.receipt.GasUsed) }
// Info represents a diagnostic information about the whisper node.
type Info struct {
info *whisper.Info
}
// NewMessage represents a new whisper message that is posted through the RPC.
type NewMessage struct {
newMessage *whisper.NewMessage
}
func NewNewMessage() *NewMessage {
nm := &NewMessage{
newMessage: new(whisper.NewMessage),
}
return nm
}
func (nm *NewMessage) GetSymKeyID() string { return nm.newMessage.SymKeyID }
func (nm *NewMessage) SetSymKeyID(symKeyID string) { nm.newMessage.SymKeyID = symKeyID }
func (nm *NewMessage) GetPublicKey() []byte { return nm.newMessage.PublicKey }
func (nm *NewMessage) SetPublicKey(publicKey []byte) {
nm.newMessage.PublicKey = common.CopyBytes(publicKey)
}
func (nm *NewMessage) GetSig() string { return nm.newMessage.Sig }
func (nm *NewMessage) SetSig(sig string) { nm.newMessage.Sig = sig }
func (nm *NewMessage) GetTTL() int64 { return int64(nm.newMessage.TTL) }
func (nm *NewMessage) SetTTL(ttl int64) { nm.newMessage.TTL = uint32(ttl) }
func (nm *NewMessage) GetPayload() []byte { return nm.newMessage.Payload }
func (nm *NewMessage) SetPayload(payload []byte) { nm.newMessage.Payload = common.CopyBytes(payload) }
func (nm *NewMessage) GetPowTime() int64 { return int64(nm.newMessage.PowTime) }
func (nm *NewMessage) SetPowTime(powTime int64) { nm.newMessage.PowTime = uint32(powTime) }
func (nm *NewMessage) GetPowTarget() float64 { return nm.newMessage.PowTarget }
func (nm *NewMessage) SetPowTarget(powTarget float64) { nm.newMessage.PowTarget = powTarget }
func (nm *NewMessage) GetTargetPeer() string { return nm.newMessage.TargetPeer }
func (nm *NewMessage) SetTargetPeer(targetPeer string) { nm.newMessage.TargetPeer = targetPeer }
func (nm *NewMessage) GetTopic() []byte { return nm.newMessage.Topic[:] }
func (nm *NewMessage) SetTopic(topic []byte) { nm.newMessage.Topic = whisper.BytesToTopic(topic) }
// Message represents a whisper message.
type Message struct {
message *whisper.Message
}
func (m *Message) GetSig() []byte { return m.message.Sig }
func (m *Message) GetTTL() int64 { return int64(m.message.TTL) }
func (m *Message) GetTimestamp() int64 { return int64(m.message.Timestamp) }
func (m *Message) GetPayload() []byte { return m.message.Payload }
func (m *Message) GetPoW() float64 { return m.message.PoW }
func (m *Message) GetHash() []byte { return m.message.Hash }
func (m *Message) GetDst() []byte { return m.message.Dst }
// Messages represents an array of messages.
type Messages struct {
messages []*whisper.Message
}
// Size returns the number of messages in the slice.
func (m *Messages) Size() int {
return len(m.messages)
}
// Get returns the message at the given index from the slice.
func (m *Messages) Get(index int) (message *Message, _ error) {
if index < 0 || index >= len(m.messages) {
return nil, errors.New("index out of bounds")
}
return &Message{m.messages[index]}, nil
}
// Criteria holds various filter options for inbound messages.
type Criteria struct {
criteria *whisper.Criteria
}
func NewCriteria(topic []byte) *Criteria {
c := &Criteria{
criteria: new(whisper.Criteria),
}
encodedTopic := whisper.BytesToTopic(topic)
c.criteria.Topics = []whisper.TopicType{encodedTopic}
return c
}
func (c *Criteria) GetSymKeyID() string { return c.criteria.SymKeyID }
func (c *Criteria) SetSymKeyID(symKeyID string) { c.criteria.SymKeyID = symKeyID }
func (c *Criteria) GetPrivateKeyID() string { return c.criteria.PrivateKeyID }
func (c *Criteria) SetPrivateKeyID(privateKeyID string) { c.criteria.PrivateKeyID = privateKeyID }
func (c *Criteria) GetSig() []byte { return c.criteria.Sig }
func (c *Criteria) SetSig(sig []byte) { c.criteria.Sig = common.CopyBytes(sig) }
func (c *Criteria) GetMinPow() float64 { return c.criteria.MinPow }
func (c *Criteria) SetMinPow(pow float64) { c.criteria.MinPow = pow }
tests/fuzzers/whisperv6/whisper-fuzzer.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2019 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv6
import (
"bytes"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/whisper/whisperv6"
)
type MessageParams struct {
Topic whisperv6.TopicType
WorkTime uint32
TTL uint32
KeySym []byte
Payload []byte
}
//export fuzzer_entry
func Fuzz(input []byte) int {
var paramsDecoded MessageParams
err := rlp.DecodeBytes(input, &paramsDecoded)
if err != nil {
return 0
}
var params whisperv6.MessageParams
params.KeySym = make([]byte, 32)
if len(paramsDecoded.KeySym) <= 32 {
copy(params.KeySym, paramsDecoded.KeySym)
}
if input[0] == 255 {
params.PoW = 0.01
params.WorkTime = 1
} else {
params.PoW = 0
params.WorkTime = 0
}
params.TTL = paramsDecoded.TTL
params.Payload = paramsDecoded.Payload
text := make([]byte, 0, 512)
text = append(text, params.Payload...)
params.Topic = paramsDecoded.Topic
params.Src, err = crypto.GenerateKey()
if err != nil {
return 0
}
msg, err := whisperv6.NewSentMessage(&params)
if err != nil {
panic(err)
//return
}
env, err := msg.Wrap(&params)
if err != nil {
panic(err)
}
decrypted, err := env.OpenSymmetric(params.KeySym)
if err != nil {
panic(err)
}
if !decrypted.ValidateAndParse() {
panic("ValidateAndParse failed")
}
if !bytes.Equal(text, decrypted.Payload) {
panic("text != decrypted.Payload")
}
if len(decrypted.Signature) != 65 {
panic("Unexpected signature length")
}
if !whisperv6.IsPubKeyEqual(decrypted.Src, &params.Src.PublicKey) {
panic("Unexpected public key")
}
return 0
}
whisper/mailserver/mailserver.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// Package mailserver provides a naive, example mailserver implementation
package mailserver
import (
"encoding/binary"
"fmt"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/rlp"
whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
"github.com/syndtr/goleveldb/leveldb"
"github.com/syndtr/goleveldb/leveldb/errors"
"github.com/syndtr/goleveldb/leveldb/opt"
"github.com/syndtr/goleveldb/leveldb/util"
)
// WMailServer represents the state data of the mailserver.
type WMailServer struct {
db *leveldb.DB
w *whisper.Whisper
pow float64
key []byte
}
type DBKey struct {
timestamp uint32
hash common.Hash
raw []byte
}
// NewDbKey is a helper function that creates a levelDB
// key from a hash and an integer.
func NewDbKey(t uint32, h common.Hash) *DBKey {
const sz = common.HashLength + 4
var k DBKey
k.timestamp = t
k.hash = h
k.raw = make([]byte, sz)
binary.BigEndian.PutUint32(k.raw, k.timestamp)
copy(k.raw[4:], k.hash[:])
return &k
}
// Init initializes the mail server.
func (s *WMailServer) Init(shh *whisper.Whisper, path string, password string, pow float64) error {
var err error
if len(path) == 0 {
return fmt.Errorf("DB file is not specified")
}
if len(password) == 0 {
return fmt.Errorf("password is not specified")
}
s.db, err = leveldb.OpenFile(path, &opt.Options{OpenFilesCacheCapacity: 32})
if _, iscorrupted := err.(*errors.ErrCorrupted); iscorrupted {
s.db, err = leveldb.RecoverFile(path, nil)
}
if err != nil {
return fmt.Errorf("open DB file: %s", err)
}
s.w = shh
s.pow = pow
MailServerKeyID, err := s.w.AddSymKeyFromPassword(password)
if err != nil {
return fmt.Errorf("create symmetric key: %s", err)
}
s.key, err = s.w.GetSymKey(MailServerKeyID)
if err != nil {
return fmt.Errorf("save symmetric key: %s", err)
}
return nil
}
// Close cleans up before shutdown.
func (s *WMailServer) Close() {
if s.db != nil {
s.db.Close()
}
}
// Archive stores the
func (s *WMailServer) Archive(env *whisper.Envelope) {
key := NewDbKey(env.Expiry-env.TTL, env.Hash())
rawEnvelope, err := rlp.EncodeToBytes(env)
if err != nil {
log.Error(fmt.Sprintf("rlp.EncodeToBytes failed: %s", err))
} else {
err = s.db.Put(key.raw, rawEnvelope, nil)
if err != nil {
log.Error(fmt.Sprintf("Writing to DB failed: %s", err))
}
}
}
// DeliverMail responds with saved messages upon request by the
// messages' owner.
func (s *WMailServer) DeliverMail(peer *whisper.Peer, request *whisper.Envelope) {
if peer == nil {
log.Error("Whisper peer is nil")
return
}
ok, lower, upper, bloom := s.validateRequest(peer.ID(), request)
if ok {
s.processRequest(peer, lower, upper, bloom)
}
}
func (s *WMailServer) processRequest(peer *whisper.Peer, lower, upper uint32, bloom []byte) []*whisper.Envelope {
ret := make([]*whisper.Envelope, 0)
var err error
var zero common.Hash
kl := NewDbKey(lower, zero)
ku := NewDbKey(upper+1, zero) // LevelDB is exclusive, while the Whisper API is inclusive
i := s.db.NewIterator(&util.Range{Start: kl.raw, Limit: ku.raw}, nil)
defer i.Release()
for i.Next() {
var envelope whisper.Envelope
err = rlp.DecodeBytes(i.Value(), &envelope)
if err != nil {
log.Error(fmt.Sprintf("RLP decoding failed: %s", err))
}
if whisper.BloomFilterMatch(bloom, envelope.Bloom()) {
if peer == nil {
// used for test purposes
ret = append(ret, &envelope)
} else {
err = s.w.SendP2PDirect(peer, &envelope)
if err != nil {
log.Error(fmt.Sprintf("Failed to send direct message to peer: %s", err))
return nil
}
}
}
}
err = i.Error()
if err != nil {
log.Error(fmt.Sprintf("Level DB iterator error: %s", err))
}
return ret
}
func (s *WMailServer) validateRequest(peerID []byte, request *whisper.Envelope) (bool, uint32, uint32, []byte) {
if s.pow > 0.0 && request.PoW() < s.pow {
return false, 0, 0, nil
}
f := whisper.Filter{KeySym: s.key}
decrypted := request.Open(&f)
if decrypted == nil {
log.Warn("Failed to decrypt p2p request")
return false, 0, 0, nil
}
src := crypto.FromECDSAPub(decrypted.Src)
if len(src)-len(peerID) == 1 {
src = src[1:]
}
// if you want to check the signature, you can do it here. e.g.:
// if !bytes.Equal(peerID, src) {
if src == nil {
log.Warn("Wrong signature of p2p request")
return false, 0, 0, nil
}
var bloom []byte
payloadSize := len(decrypted.Payload)
if payloadSize < 8 {
log.Warn("Undersized p2p request")
return false, 0, 0, nil
} else if payloadSize == 8 {
bloom = whisper.MakeFullNodeBloom()
} else if payloadSize < 8+whisper.BloomFilterSize {
log.Warn("Undersized bloom filter in p2p request")
return false, 0, 0, nil
} else {
bloom = decrypted.Payload[8 : 8+whisper.BloomFilterSize]
}
lower := binary.BigEndian.Uint32(decrypted.Payload[:4])
upper := binary.BigEndian.Uint32(decrypted.Payload[4:8])
return true, lower, upper, bloom
}
whisper/mailserver/server_test.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package mailserver
import (
"bytes"
"crypto/ecdsa"
"encoding/binary"
"io/ioutil"
"math/rand"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/node"
whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
)
const powRequirement = 0.00001
var keyID string
var shh *whisper.Whisper
var seed = time.Now().Unix()
type ServerTestParams struct {
topic whisper.TopicType
low uint32
upp uint32
key *ecdsa.PrivateKey
}
func assert(statement bool, text string, t *testing.T) {
if !statement {
t.Fatal(text)
}
}
func TestDBKey(t *testing.T) {
var h common.Hash
i := uint32(time.Now().Unix())
k := NewDbKey(i, h)
assert(len(k.raw) == common.HashLength+4, "wrong DB key length", t)
assert(byte(i%0x100) == k.raw[3], "raw representation should be big endian", t)
assert(byte(i/0x1000000) == k.raw[0], "big endian expected", t)
}
func generateEnvelope(t *testing.T) *whisper.Envelope {
h := crypto.Keccak256Hash([]byte("test sample data"))
params := &whisper.MessageParams{
KeySym: h[:],
Topic: whisper.TopicType{0x1F, 0x7E, 0xA1, 0x7F},
Payload: []byte("test payload"),
PoW: powRequirement,
WorkTime: 2,
}
msg, err := whisper.NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("failed to wrap with seed %d: %s.", seed, err)
}
return env
}
func TestMailServer(t *testing.T) {
const password = "password_for_this_test"
const dbPath = "whisper-server-test"
dir, err := ioutil.TempDir("", dbPath)
if err != nil {
t.Fatal(err)
}
var server WMailServer
stack, w := newNode(t)
defer stack.Close()
shh = w
shh.RegisterServer(&server)
err = server.Init(shh, dir, password, powRequirement)
if err != nil {
t.Fatal(err)
}
defer server.Close()
keyID, err = shh.AddSymKeyFromPassword(password)
if err != nil {
t.Fatalf("Failed to create symmetric key for mail request: %s", err)
}
rand.Seed(seed)
env := generateEnvelope(t)
server.Archive(env)
deliverTest(t, &server, env)
}
func deliverTest(t *testing.T, server *WMailServer, env *whisper.Envelope) {
id, err := shh.NewKeyPair()
if err != nil {
t.Fatalf("failed to generate new key pair with seed %d: %s.", seed, err)
}
testPeerID, err := shh.GetPrivateKey(id)
if err != nil {
t.Fatalf("failed to retrieve new key pair with seed %d: %s.", seed, err)
}
birth := env.Expiry - env.TTL
p := &ServerTestParams{
topic: env.Topic,
low: birth - 1,
upp: birth + 1,
key: testPeerID,
}
singleRequest(t, server, env, p, true)
p.low, p.upp = birth+1, 0xffffffff
singleRequest(t, server, env, p, false)
p.low, p.upp = 0, birth-1
singleRequest(t, server, env, p, false)
p.low = birth - 1
p.upp = birth + 1
p.topic[0] = 0xFF
singleRequest(t, server, env, p, false)
}
func singleRequest(t *testing.T, server *WMailServer, env *whisper.Envelope, p *ServerTestParams, expect bool) {
request := createRequest(t, p)
src := crypto.FromECDSAPub(&p.key.PublicKey)
ok, lower, upper, bloom := server.validateRequest(src, request)
if !ok {
t.Fatalf("request validation failed, seed: %d.", seed)
}
if lower != p.low {
t.Fatalf("request validation failed (lower bound), seed: %d.", seed)
}
if upper != p.upp {
t.Fatalf("request validation failed (upper bound), seed: %d.", seed)
}
expectedBloom := whisper.TopicToBloom(p.topic)
if !bytes.Equal(bloom, expectedBloom) {
t.Fatalf("request validation failed (topic), seed: %d.", seed)
}
var exist bool
mail := server.processRequest(nil, p.low, p.upp, bloom)
for _, msg := range mail {
if msg.Hash() == env.Hash() {
exist = true
break
}
}
if exist != expect {
t.Fatalf("error: exist = %v, seed: %d.", exist, seed)
}
src[0]++
ok, lower, upper, _ = server.validateRequest(src, request)
if !ok {
// request should be valid regardless of signature
t.Fatalf("request validation false negative, seed: %d (lower: %d, upper: %d).", seed, lower, upper)
}
}
func createRequest(t *testing.T, p *ServerTestParams) *whisper.Envelope {
bloom := whisper.TopicToBloom(p.topic)
data := make([]byte, 8)
binary.BigEndian.PutUint32(data, p.low)
binary.BigEndian.PutUint32(data[4:], p.upp)
data = append(data, bloom...)
key, err := shh.GetSymKey(keyID)
if err != nil {
t.Fatalf("failed to retrieve sym key with seed %d: %s.", seed, err)
}
params := &whisper.MessageParams{
KeySym: key,
Topic: p.topic,
Payload: data,
PoW: powRequirement * 2,
WorkTime: 2,
Src: p.key,
}
msg, err := whisper.NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("failed to wrap with seed %d: %s.", seed, err)
}
return env
}
// newNode creates a new node using a default config and
// creates and registers a new Whisper service on it.
func newNode(t *testing.T) (*node.Node, *whisper.Whisper) {
stack, err := node.New(&node.DefaultConfig)
if err != nil {
t.Fatalf("could not create new node: %v", err)
}
w, err := whisper.New(stack, &whisper.DefaultConfig)
if err != nil {
t.Fatalf("could not create new whisper service: %v", err)
}
err = stack.Start()
if err != nil {
t.Fatalf("could not start node: %v", err)
}
return stack, w
}
whisper/shhclient/client.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package shhclient
import (
"context"
ethereum "github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/rpc"
whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
)
// Client defines typed wrappers for the Whisper v6 RPC API.
type Client struct {
c *rpc.Client
}
// Dial connects a client to the given URL.
func Dial(rawurl string) (*Client, error) {
c, err := rpc.Dial(rawurl)
if err != nil {
return nil, err
}
return NewClient(c), nil
}
// NewClient creates a client that uses the given RPC client.
func NewClient(c *rpc.Client) *Client {
return &Client{c}
}
// Version returns the Whisper sub-protocol version.
func (sc *Client) Version(ctx context.Context) (string, error) {
var result string
err := sc.c.CallContext(ctx, &result, "shh_version")
return result, err
}
// Info returns diagnostic information about the whisper node.
func (sc *Client) Info(ctx context.Context) (whisper.Info, error) {
var info whisper.Info
err := sc.c.CallContext(ctx, &info, "shh_info")
return info, err
}
// SetMaxMessageSize sets the maximal message size allowed by this node. Incoming
// and outgoing messages with a larger size will be rejected. Whisper message size
// can never exceed the limit imposed by the underlying P2P protocol (10 Mb).
func (sc *Client) SetMaxMessageSize(ctx context.Context, size uint32) error {
var ignored bool
return sc.c.CallContext(ctx, &ignored, "shh_setMaxMessageSize", size)
}
// SetMinimumPoW (experimental) sets the minimal PoW required by this node.
// This experimental function was introduced for the future dynamic adjustment of
// PoW requirement. If the node is overwhelmed with messages, it should raise the
// PoW requirement and notify the peers. The new value should be set relative to
// the old value (e.g. double). The old value could be obtained via shh_info call.
func (sc *Client) SetMinimumPoW(ctx context.Context, pow float64) error {
var ignored bool
return sc.c.CallContext(ctx, &ignored, "shh_setMinPoW", pow)
}
// MarkTrustedPeer marks specific peer trusted, which will allow it to send historic (expired) messages.
// Note This function is not adding new nodes, the node needs to exists as a peer.
func (sc *Client) MarkTrustedPeer(ctx context.Context, enode string) error {
var ignored bool
return sc.c.CallContext(ctx, &ignored, "shh_markTrustedPeer", enode)
}
// NewKeyPair generates a new public and private key pair for message decryption and encryption.
// It returns an identifier that can be used to refer to the key.
func (sc *Client) NewKeyPair(ctx context.Context) (string, error) {
var id string
return id, sc.c.CallContext(ctx, &id, "shh_newKeyPair")
}
// AddPrivateKey stored the key pair, and returns its ID.
func (sc *Client) AddPrivateKey(ctx context.Context, key []byte) (string, error) {
var id string
return id, sc.c.CallContext(ctx, &id, "shh_addPrivateKey", hexutil.Bytes(key))
}
// DeleteKeyPair delete the specifies key.
func (sc *Client) DeleteKeyPair(ctx context.Context, id string) (string, error) {
var ignored bool
return id, sc.c.CallContext(ctx, &ignored, "shh_deleteKeyPair", id)
}
// HasKeyPair returns an indication if the node has a private key or
// key pair matching the given ID.
func (sc *Client) HasKeyPair(ctx context.Context, id string) (bool, error) {
var has bool
return has, sc.c.CallContext(ctx, &has, "shh_hasKeyPair", id)
}
// PublicKey return the public key for a key ID.
func (sc *Client) PublicKey(ctx context.Context, id string) ([]byte, error) {
var key hexutil.Bytes
return []byte(key), sc.c.CallContext(ctx, &key, "shh_getPublicKey", id)
}
// PrivateKey return the private key for a key ID.
func (sc *Client) PrivateKey(ctx context.Context, id string) ([]byte, error) {
var key hexutil.Bytes
return []byte(key), sc.c.CallContext(ctx, &key, "shh_getPrivateKey", id)
}
// NewSymmetricKey generates a random symmetric key and returns its identifier.
// Can be used encrypting and decrypting messages where the key is known to both parties.
func (sc *Client) NewSymmetricKey(ctx context.Context) (string, error) {
var id string
return id, sc.c.CallContext(ctx, &id, "shh_newSymKey")
}
// AddSymmetricKey stores the key, and returns its identifier.
func (sc *Client) AddSymmetricKey(ctx context.Context, key []byte) (string, error) {
var id string
return id, sc.c.CallContext(ctx, &id, "shh_addSymKey", hexutil.Bytes(key))
}
// GenerateSymmetricKeyFromPassword generates the key from password, stores it, and returns its identifier.
func (sc *Client) GenerateSymmetricKeyFromPassword(ctx context.Context, passwd string) (string, error) {
var id string
return id, sc.c.CallContext(ctx, &id, "shh_generateSymKeyFromPassword", passwd)
}
// HasSymmetricKey returns an indication if the key associated with the given id is stored in the node.
func (sc *Client) HasSymmetricKey(ctx context.Context, id string) (bool, error) {
var found bool
return found, sc.c.CallContext(ctx, &found, "shh_hasSymKey", id)
}
// GetSymmetricKey returns the symmetric key associated with the given identifier.
func (sc *Client) GetSymmetricKey(ctx context.Context, id string) ([]byte, error) {
var key hexutil.Bytes
return []byte(key), sc.c.CallContext(ctx, &key, "shh_getSymKey", id)
}
// DeleteSymmetricKey deletes the symmetric key associated with the given identifier.
func (sc *Client) DeleteSymmetricKey(ctx context.Context, id string) error {
var ignored bool
return sc.c.CallContext(ctx, &ignored, "shh_deleteSymKey", id)
}
// Post a message onto the network.
func (sc *Client) Post(ctx context.Context, message whisper.NewMessage) (string, error) {
var hash string
return hash, sc.c.CallContext(ctx, &hash, "shh_post", message)
}
// SubscribeMessages subscribes to messages that match the given criteria. This method
// is only supported on bi-directional connections such as websockets and IPC.
// NewMessageFilter uses polling and is supported over HTTP.
func (sc *Client) SubscribeMessages(ctx context.Context, criteria whisper.Criteria, ch chan<- *whisper.Message) (ethereum.Subscription, error) {
return sc.c.ShhSubscribe(ctx, ch, "messages", criteria)
}
// NewMessageFilter creates a filter within the node. This filter can be used to poll
// for new messages (see FilterMessages) that satisfy the given criteria. A filter can
// timeout when it was polled for in whisper.filterTimeout.
func (sc *Client) NewMessageFilter(ctx context.Context, criteria whisper.Criteria) (string, error) {
var id string
return id, sc.c.CallContext(ctx, &id, "shh_newMessageFilter", criteria)
}
// DeleteMessageFilter removes the filter associated with the given id.
func (sc *Client) DeleteMessageFilter(ctx context.Context, id string) error {
var ignored bool
return sc.c.CallContext(ctx, &ignored, "shh_deleteMessageFilter", id)
}
// FilterMessages retrieves all messages that are received between the last call to
// this function and match the criteria that where given when the filter was created.
func (sc *Client) FilterMessages(ctx context.Context, id string) ([]*whisper.Message, error) {
var messages []*whisper.Message
return messages, sc.c.CallContext(ctx, &messages, "shh_getFilterMessages", id)
}
whisper/whisperv6/api.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv6
import (
"context"
"crypto/ecdsa"
"errors"
"fmt"
"sync"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/rpc"
)
// List of errors
var (
ErrSymAsym = errors.New("specify either a symmetric or an asymmetric key")
ErrInvalidSymmetricKey = errors.New("invalid symmetric key")
ErrInvalidPublicKey = errors.New("invalid public key")
ErrInvalidSigningPubKey = errors.New("invalid signing public key")
ErrTooLowPoW = errors.New("message rejected, PoW too low")
ErrNoTopics = errors.New("missing topic(s)")
)
// PublicWhisperAPI provides the whisper RPC service that can be
// use publicly without security implications.
type PublicWhisperAPI struct {
w *Whisper
mu sync.Mutex
lastUsed map[string]time.Time // keeps track when a filter was polled for the last time.
}
// NewPublicWhisperAPI create a new RPC whisper service.
func NewPublicWhisperAPI(w *Whisper) *PublicWhisperAPI {
api := &PublicWhisperAPI{
w: w,
lastUsed: make(map[string]time.Time),
}
return api
}
// Version returns the Whisper sub-protocol version.
func (api *PublicWhisperAPI) Version(ctx context.Context) string {
return ProtocolVersionStr
}
// Info contains diagnostic information.
type Info struct {
Memory int `json:"memory"` // Memory size of the floating messages in bytes.
Messages int `json:"messages"` // Number of floating messages.
MinPow float64 `json:"minPow"` // Minimal accepted PoW
MaxMessageSize uint32 `json:"maxMessageSize"` // Maximum accepted message size
}
// Info returns diagnostic information about the whisper node.
func (api *PublicWhisperAPI) Info(ctx context.Context) Info {
stats := api.w.Stats()
return Info{
Memory: stats.memoryUsed,
Messages: len(api.w.messageQueue) + len(api.w.p2pMsgQueue),
MinPow: api.w.MinPow(),
MaxMessageSize: api.w.MaxMessageSize(),
}
}
// SetMaxMessageSize sets the maximum message size that is accepted.
// Upper limit is defined by MaxMessageSize.
func (api *PublicWhisperAPI) SetMaxMessageSize(ctx context.Context, size uint32) (bool, error) {
return true, api.w.SetMaxMessageSize(size)
}
// SetMinPoW sets the minimum PoW, and notifies the peers.
func (api *PublicWhisperAPI) SetMinPoW(ctx context.Context, pow float64) (bool, error) {
return true, api.w.SetMinimumPoW(pow)
}
// SetBloomFilter sets the new value of bloom filter, and notifies the peers.
func (api *PublicWhisperAPI) SetBloomFilter(ctx context.Context, bloom hexutil.Bytes) (bool, error) {
return true, api.w.SetBloomFilter(bloom)
}
// MarkTrustedPeer marks a peer trusted, which will allow it to send historic (expired) messages.
// Note: This function is not adding new nodes, the node needs to exists as a peer.
func (api *PublicWhisperAPI) MarkTrustedPeer(ctx context.Context, url string) (bool, error) {
n, err := enode.Parse(enode.ValidSchemes, url)
if err != nil {
return false, err
}
return true, api.w.AllowP2PMessagesFromPeer(n.ID().Bytes())
}
// NewKeyPair generates a new public and private key pair for message decryption and encryption.
// It returns an ID that can be used to refer to the keypair.
func (api *PublicWhisperAPI) NewKeyPair(ctx context.Context) (string, error) {
return api.w.NewKeyPair()
}
// AddPrivateKey imports the given private key.
func (api *PublicWhisperAPI) AddPrivateKey(ctx context.Context, privateKey hexutil.Bytes) (string, error) {
key, err := crypto.ToECDSA(privateKey)
if err != nil {
return "", err
}
return api.w.AddKeyPair(key)
}
// DeleteKeyPair removes the key with the given key if it exists.
func (api *PublicWhisperAPI) DeleteKeyPair(ctx context.Context, key string) (bool, error) {
if ok := api.w.DeleteKeyPair(key); ok {
return true, nil
}
return false, fmt.Errorf("key pair %s not found", key)
}
// HasKeyPair returns an indication if the node has a key pair that is associated with the given id.
func (api *PublicWhisperAPI) HasKeyPair(ctx context.Context, id string) bool {
return api.w.HasKeyPair(id)
}
// GetPublicKey returns the public key associated with the given key. The key is the hex
// encoded representation of a key in the form specified in section 4.3.6 of ANSI X9.62.
func (api *PublicWhisperAPI) GetPublicKey(ctx context.Context, id string) (hexutil.Bytes, error) {
key, err := api.w.GetPrivateKey(id)
if err != nil {
return hexutil.Bytes{}, err
}
return crypto.FromECDSAPub(&key.PublicKey), nil
}
// GetPrivateKey returns the private key associated with the given key. The key is the hex
// encoded representation of a key in the form specified in section 4.3.6 of ANSI X9.62.
func (api *PublicWhisperAPI) GetPrivateKey(ctx context.Context, id string) (hexutil.Bytes, error) {
key, err := api.w.GetPrivateKey(id)
if err != nil {
return hexutil.Bytes{}, err
}
return crypto.FromECDSA(key), nil
}
// NewSymKey generate a random symmetric key.
// It returns an ID that can be used to refer to the key.
// Can be used encrypting and decrypting messages where the key is known to both parties.
func (api *PublicWhisperAPI) NewSymKey(ctx context.Context) (string, error) {
return api.w.GenerateSymKey()
}
// AddSymKey import a symmetric key.
// It returns an ID that can be used to refer to the key.
// Can be used encrypting and decrypting messages where the key is known to both parties.
func (api *PublicWhisperAPI) AddSymKey(ctx context.Context, key hexutil.Bytes) (string, error) {
return api.w.AddSymKeyDirect([]byte(key))
}
// GenerateSymKeyFromPassword derive a key from the given password, stores it, and returns its ID.
func (api *PublicWhisperAPI) GenerateSymKeyFromPassword(ctx context.Context, passwd string) (string, error) {
return api.w.AddSymKeyFromPassword(passwd)
}
// HasSymKey returns an indication if the node has a symmetric key associated with the given key.
func (api *PublicWhisperAPI) HasSymKey(ctx context.Context, id string) bool {
return api.w.HasSymKey(id)
}
// GetSymKey returns the symmetric key associated with the given id.
func (api *PublicWhisperAPI) GetSymKey(ctx context.Context, id string) (hexutil.Bytes, error) {
return api.w.GetSymKey(id)
}
// DeleteSymKey deletes the symmetric key that is associated with the given id.
func (api *PublicWhisperAPI) DeleteSymKey(ctx context.Context, id string) bool {
return api.w.DeleteSymKey(id)
}
// MakeLightClient turns the node into light client, which does not forward
// any incoming messages, and sends only messages originated in this node.
func (api *PublicWhisperAPI) MakeLightClient(ctx context.Context) bool {
api.w.SetLightClientMode(true)
return api.w.LightClientMode()
}
// CancelLightClient cancels light client mode.
func (api *PublicWhisperAPI) CancelLightClient(ctx context.Context) bool {
api.w.SetLightClientMode(false)
return !api.w.LightClientMode()
}
//go:generate gencodec -type NewMessage -field-override newMessageOverride -out gen_newmessage_json.go
// NewMessage represents a new whisper message that is posted through the RPC.
type NewMessage struct {
SymKeyID string `json:"symKeyID"`
PublicKey []byte `json:"pubKey"`
Sig string `json:"sig"`
TTL uint32 `json:"ttl"`
Topic TopicType `json:"topic"`
Payload []byte `json:"payload"`
Padding []byte `json:"padding"`
PowTime uint32 `json:"powTime"`
PowTarget float64 `json:"powTarget"`
TargetPeer string `json:"targetPeer"`
}
type newMessageOverride struct {
PublicKey hexutil.Bytes
Payload hexutil.Bytes
Padding hexutil.Bytes
}
// Post posts a message on the Whisper network.
// returns the hash of the message in case of success.
func (api *PublicWhisperAPI) Post(ctx context.Context, req NewMessage) (hexutil.Bytes, error) {
var (
symKeyGiven = len(req.SymKeyID) > 0
pubKeyGiven = len(req.PublicKey) > 0
err error
)
// user must specify either a symmetric or an asymmetric key
if (symKeyGiven && pubKeyGiven) || (!symKeyGiven && !pubKeyGiven) {
return nil, ErrSymAsym
}
params := &MessageParams{
TTL: req.TTL,
Payload: req.Payload,
Padding: req.Padding,
WorkTime: req.PowTime,
PoW: req.PowTarget,
Topic: req.Topic,
}
// Set key that is used to sign the message
if len(req.Sig) > 0 {
if params.Src, err = api.w.GetPrivateKey(req.Sig); err != nil {
return nil, err
}
}
// Set symmetric key that is used to encrypt the message
if symKeyGiven {
if params.Topic == (TopicType{}) { // topics are mandatory with symmetric encryption
return nil, ErrNoTopics
}
if params.KeySym, err = api.w.GetSymKey(req.SymKeyID); err != nil {
return nil, err
}
if !validateDataIntegrity(params.KeySym, aesKeyLength) {
return nil, ErrInvalidSymmetricKey
}
}
// Set asymmetric key that is used to encrypt the message
if pubKeyGiven {
if params.Dst, err = crypto.UnmarshalPubkey(req.PublicKey); err != nil {
return nil, ErrInvalidPublicKey
}
}
// encrypt and sent message
whisperMsg, err := NewSentMessage(params)
if err != nil {
return nil, err
}
var result []byte
env, err := whisperMsg.Wrap(params)
if err != nil {
return nil, err
}
// send to specific node (skip PoW check)
if len(req.TargetPeer) > 0 {
n, err := enode.Parse(enode.ValidSchemes, req.TargetPeer)
if err != nil {
return nil, fmt.Errorf("failed to parse target peer: %s", err)
}
err = api.w.SendP2PMessage(n.ID().Bytes(), env)
if err == nil {
hash := env.Hash()
result = hash[:]
}
return result, err
}
// ensure that the message PoW meets the node's minimum accepted PoW
if req.PowTarget < api.w.MinPow() {
return nil, ErrTooLowPoW
}
err = api.w.Send(env)
if err == nil {
hash := env.Hash()
result = hash[:]
}
return result, err
}
//go:generate gencodec -type Criteria -field-override criteriaOverride -out gen_criteria_json.go
// Criteria holds various filter options for inbound messages.
type Criteria struct {
SymKeyID string `json:"symKeyID"`
PrivateKeyID string `json:"privateKeyID"`
Sig []byte `json:"sig"`
MinPow float64 `json:"minPow"`
Topics []TopicType `json:"topics"`
AllowP2P bool `json:"allowP2P"`
}
type criteriaOverride struct {
Sig hexutil.Bytes
}
// Messages set up a subscription that fires events when messages arrive that match
// the given set of criteria.
func (api *PublicWhisperAPI) Messages(ctx context.Context, crit Criteria) (*rpc.Subscription, error) {
var (
symKeyGiven = len(crit.SymKeyID) > 0
pubKeyGiven = len(crit.PrivateKeyID) > 0
err error
)
// ensure that the RPC connection supports subscriptions
notifier, supported := rpc.NotifierFromContext(ctx)
if !supported {
return nil, rpc.ErrNotificationsUnsupported
}
// user must specify either a symmetric or an asymmetric key
if (symKeyGiven && pubKeyGiven) || (!symKeyGiven && !pubKeyGiven) {
return nil, ErrSymAsym
}
filter := Filter{
PoW: crit.MinPow,
Messages: make(map[common.Hash]*ReceivedMessage),
AllowP2P: crit.AllowP2P,
}
if len(crit.Sig) > 0 {
if filter.Src, err = crypto.UnmarshalPubkey(crit.Sig); err != nil {
return nil, ErrInvalidSigningPubKey
}
}
for i, bt := range crit.Topics {
if len(bt) == 0 || len(bt) > 4 {
return nil, fmt.Errorf("subscribe: topic %d has wrong size: %d", i, len(bt))
}
filter.Topics = append(filter.Topics, bt[:])
}
// listen for message that are encrypted with the given symmetric key
if symKeyGiven {
if len(filter.Topics) == 0 {
return nil, ErrNoTopics
}
key, err := api.w.GetSymKey(crit.SymKeyID)
if err != nil {
return nil, err
}
if !validateDataIntegrity(key, aesKeyLength) {
return nil, ErrInvalidSymmetricKey
}
filter.KeySym = key
filter.SymKeyHash = crypto.Keccak256Hash(filter.KeySym)
}
// listen for messages that are encrypted with the given public key
if pubKeyGiven {
filter.KeyAsym, err = api.w.GetPrivateKey(crit.PrivateKeyID)
if err != nil || filter.KeyAsym == nil {
return nil, ErrInvalidPublicKey
}
}
id, err := api.w.Subscribe(&filter)
if err != nil {
return nil, err
}
// create subscription and start waiting for message events
rpcSub := notifier.CreateSubscription()
go func() {
// for now poll internally, refactor whisper internal for channel support
ticker := time.NewTicker(250 * time.Millisecond)
defer ticker.Stop()
for {
select {
case <-ticker.C:
if filter := api.w.GetFilter(id); filter != nil {
for _, rpcMessage := range toMessage(filter.Retrieve()) {
if err := notifier.Notify(rpcSub.ID, rpcMessage); err != nil {
log.Error("Failed to send notification", "err", err)
}
}
}
case <-rpcSub.Err():
api.w.Unsubscribe(id)
return
case <-notifier.Closed():
api.w.Unsubscribe(id)
return
}
}
}()
return rpcSub, nil
}
//go:generate gencodec -type Message -field-override messageOverride -out gen_message_json.go
// Message is the RPC representation of a whisper message.
type Message struct {
Sig []byte `json:"sig,omitempty"`
TTL uint32 `json:"ttl"`
Timestamp uint32 `json:"timestamp"`
Topic TopicType `json:"topic"`
Payload []byte `json:"payload"`
Padding []byte `json:"padding"`
PoW float64 `json:"pow"`
Hash []byte `json:"hash"`
Dst []byte `json:"recipientPublicKey,omitempty"`
}
type messageOverride struct {
Sig hexutil.Bytes
Payload hexutil.Bytes
Padding hexutil.Bytes
Hash hexutil.Bytes
Dst hexutil.Bytes
}
// ToWhisperMessage converts an internal message into an API version.
func ToWhisperMessage(message *ReceivedMessage) *Message {
msg := Message{
Payload: message.Payload,
Padding: message.Padding,
Timestamp: message.Sent,
TTL: message.TTL,
PoW: message.PoW,
Hash: message.EnvelopeHash.Bytes(),
Topic: message.Topic,
}
if message.Dst != nil {
b := crypto.FromECDSAPub(message.Dst)
if b != nil {
msg.Dst = b
}
}
if isMessageSigned(message.Raw[0]) {
b := crypto.FromECDSAPub(message.SigToPubKey())
if b != nil {
msg.Sig = b
}
}
return &msg
}
// toMessage converts a set of messages to its RPC representation.
func toMessage(messages []*ReceivedMessage) []*Message {
msgs := make([]*Message, len(messages))
for i, msg := range messages {
msgs[i] = ToWhisperMessage(msg)
}
return msgs
}
// GetFilterMessages returns the messages that match the filter criteria and
// are received between the last poll and now.
func (api *PublicWhisperAPI) GetFilterMessages(id string) ([]*Message, error) {
api.mu.Lock()
f := api.w.GetFilter(id)
if f == nil {
api.mu.Unlock()
return nil, fmt.Errorf("filter not found")
}
api.lastUsed[id] = time.Now()
api.mu.Unlock()
receivedMessages := f.Retrieve()
messages := make([]*Message, 0, len(receivedMessages))
for _, msg := range receivedMessages {
messages = append(messages, ToWhisperMessage(msg))
}
return messages, nil
}
// DeleteMessageFilter deletes a filter.
func (api *PublicWhisperAPI) DeleteMessageFilter(id string) (bool, error) {
api.mu.Lock()
defer api.mu.Unlock()
delete(api.lastUsed, id)
return true, api.w.Unsubscribe(id)
}
// NewMessageFilter creates a new filter that can be used to poll for
// (new) messages that satisfy the given criteria.
func (api *PublicWhisperAPI) NewMessageFilter(req Criteria) (string, error) {
var (
src *ecdsa.PublicKey
keySym []byte
keyAsym *ecdsa.PrivateKey
topics [][]byte
symKeyGiven = len(req.SymKeyID) > 0
asymKeyGiven = len(req.PrivateKeyID) > 0
err error
)
// user must specify either a symmetric or an asymmetric key
if (symKeyGiven && asymKeyGiven) || (!symKeyGiven && !asymKeyGiven) {
return "", ErrSymAsym
}
if len(req.Sig) > 0 {
if src, err = crypto.UnmarshalPubkey(req.Sig); err != nil {
return "", ErrInvalidSigningPubKey
}
}
if symKeyGiven {
if keySym, err = api.w.GetSymKey(req.SymKeyID); err != nil {
return "", err
}
if !validateDataIntegrity(keySym, aesKeyLength) {
return "", ErrInvalidSymmetricKey
}
}
if asymKeyGiven {
if keyAsym, err = api.w.GetPrivateKey(req.PrivateKeyID); err != nil {
return "", err
}
}
if len(req.Topics) > 0 {
topics = make([][]byte, len(req.Topics))
for i, topic := range req.Topics {
topics[i] = make([]byte, TopicLength)
copy(topics[i], topic[:])
}
}
f := &Filter{
Src: src,
KeySym: keySym,
KeyAsym: keyAsym,
PoW: req.MinPow,
AllowP2P: req.AllowP2P,
Topics: topics,
Messages: make(map[common.Hash]*ReceivedMessage),
}
id, err := api.w.Subscribe(f)
if err != nil {
return "", err
}
api.mu.Lock()
api.lastUsed[id] = time.Now()
api.mu.Unlock()
return id, nil
}
whisper/whisperv6/api_test.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv6
import (
"bytes"
"testing"
"time"
)
func TestMultipleTopicCopyInNewMessageFilter(t *testing.T) {
stack, w := newNodeWithWhisper(t)
defer stack.Close()
keyID, err := w.GenerateSymKey()
if err != nil {
t.Fatalf("Error generating symmetric key: %v", err)
}
api := PublicWhisperAPI{
w: w,
lastUsed: make(map[string]time.Time),
}
t1 := [4]byte{0xde, 0xea, 0xbe, 0xef}
t2 := [4]byte{0xca, 0xfe, 0xde, 0xca}
crit := Criteria{
SymKeyID: keyID,
Topics: []TopicType{TopicType(t1), TopicType(t2)},
}
_, err = api.NewMessageFilter(crit)
if err != nil {
t.Fatalf("Error creating the filter: %v", err)
}
found := false
candidates := w.filters.getWatchersByTopic(TopicType(t1))
for _, f := range candidates {
if len(f.Topics) == 2 {
if bytes.Equal(f.Topics[0], t1[:]) && bytes.Equal(f.Topics[1], t2[:]) {
found = true
}
}
}
if !found {
t.Fatalf("Could not find filter with both topics")
}
}
whisper/whisperv6/benchmarks_test.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv6
import (
"crypto/sha256"
"testing"
"github.com/ethereum/go-ethereum/crypto"
"golang.org/x/crypto/pbkdf2"
)
func BenchmarkDeriveKeyMaterial(b *testing.B) {
for i := 0; i < b.N; i++ {
pbkdf2.Key([]byte("test"), nil, 65356, aesKeyLength, sha256.New)
}
}
func BenchmarkEncryptionSym(b *testing.B) {
InitSingleTest()
params, err := generateMessageParams()
if err != nil {
b.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
for i := 0; i < b.N; i++ {
msg, _ := NewSentMessage(params)
_, err := msg.Wrap(params)
if err != nil {
b.Errorf("failed Wrap with seed %d: %s.", seed, err)
b.Errorf("i = %d, len(msg.Raw) = %d, params.Payload = %d.", i, len(msg.Raw), len(params.Payload))
return
}
}
}
func BenchmarkEncryptionAsym(b *testing.B) {
InitSingleTest()
params, err := generateMessageParams()
if err != nil {
b.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
key, err := crypto.GenerateKey()
if err != nil {
b.Fatalf("failed GenerateKey with seed %d: %s.", seed, err)
}
params.KeySym = nil
params.Dst = &key.PublicKey
for i := 0; i < b.N; i++ {
msg, _ := NewSentMessage(params)
_, err := msg.Wrap(params)
if err != nil {
b.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
}
}
func BenchmarkDecryptionSymValid(b *testing.B) {
InitSingleTest()
params, err := generateMessageParams()
if err != nil {
b.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
msg, _ := NewSentMessage(params)
env, err := msg.Wrap(params)
if err != nil {
b.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
f := Filter{KeySym: params.KeySym}
for i := 0; i < b.N; i++ {
msg := env.Open(&f)
if msg == nil {
b.Fatalf("failed to open with seed %d.", seed)
}
}
}
func BenchmarkDecryptionSymInvalid(b *testing.B) {
InitSingleTest()
params, err := generateMessageParams()
if err != nil {
b.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
msg, _ := NewSentMessage(params)
env, err := msg.Wrap(params)
if err != nil {
b.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
f := Filter{KeySym: []byte("arbitrary stuff here")}
for i := 0; i < b.N; i++ {
msg := env.Open(&f)
if msg != nil {
b.Fatalf("opened envelope with invalid key, seed: %d.", seed)
}
}
}
func BenchmarkDecryptionAsymValid(b *testing.B) {
InitSingleTest()
params, err := generateMessageParams()
if err != nil {
b.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
key, err := crypto.GenerateKey()
if err != nil {
b.Fatalf("failed GenerateKey with seed %d: %s.", seed, err)
}
f := Filter{KeyAsym: key}
params.KeySym = nil
params.Dst = &key.PublicKey
msg, _ := NewSentMessage(params)
env, err := msg.Wrap(params)
if err != nil {
b.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
for i := 0; i < b.N; i++ {
msg := env.Open(&f)
if msg == nil {
b.Fatalf("fail to open, seed: %d.", seed)
}
}
}
func BenchmarkDecryptionAsymInvalid(b *testing.B) {
InitSingleTest()
params, err := generateMessageParams()
if err != nil {
b.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
key, err := crypto.GenerateKey()
if err != nil {
b.Fatalf("failed GenerateKey with seed %d: %s.", seed, err)
}
params.KeySym = nil
params.Dst = &key.PublicKey
msg, _ := NewSentMessage(params)
env, err := msg.Wrap(params)
if err != nil {
b.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
key, err = crypto.GenerateKey()
if err != nil {
b.Fatalf("failed GenerateKey with seed %d: %s.", seed, err)
}
f := Filter{KeyAsym: key}
for i := 0; i < b.N; i++ {
msg := env.Open(&f)
if msg != nil {
b.Fatalf("opened envelope with invalid key, seed: %d.", seed)
}
}
}
func increment(x []byte) {
for i := 0; i < len(x); i++ {
x[i]++
if x[i] != 0 {
break
}
}
}
func BenchmarkPoW(b *testing.B) {
InitSingleTest()
params, err := generateMessageParams()
if err != nil {
b.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
params.Payload = make([]byte, 32)
params.PoW = 10.0
params.TTL = 1
for i := 0; i < b.N; i++ {
increment(params.Payload)
msg, _ := NewSentMessage(params)
_, err := msg.Wrap(params)
if err != nil {
b.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
}
}
whisper/whisperv6/config.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv6
// Config represents the configuration state of a whisper node.
type Config struct {
MaxMessageSize uint32 `toml:",omitempty"`
MinimumAcceptedPOW float64 `toml:",omitempty"`
RestrictConnectionBetweenLightClients bool `toml:",omitempty"`
}
// DefaultConfig represents (shocker!) the default configuration.
var DefaultConfig = Config{
MaxMessageSize: DefaultMaxMessageSize,
MinimumAcceptedPOW: DefaultMinimumPoW,
RestrictConnectionBetweenLightClients: true,
}
whisper/whisperv6/doc.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
/*
Package whisper implements the Whisper protocol (version 6).
Whisper combines aspects of both DHTs and datagram messaging systems (e.g. UDP).
As such it may be likened and compared to both, not dissimilar to the
matter/energy duality (apologies to physicists for the blatant abuse of a
fundamental and beautiful natural principle).
Whisper is a pure identity-based messaging system. Whisper provides a low-level
(non-application-specific) but easily-accessible API without being based upon
or prejudiced by the low-level hardware attributes and characteristics,
particularly the notion of singular endpoints.
*/
// Contains the Whisper protocol constant definitions
package whisperv6
import (
"time"
"github.com/ethereum/go-ethereum/crypto"
)
// Whisper protocol parameters
const (
ProtocolVersion = uint64(6) // Protocol version number
ProtocolVersionStr = "6.0" // The same, as a string
ProtocolName = "shh" // Nickname of the protocol in geth
// whisper protocol message codes, according to EIP-627
statusCode = 0 // used by whisper protocol
messagesCode = 1 // normal whisper message
powRequirementCode = 2 // PoW requirement
bloomFilterExCode = 3 // bloom filter exchange
p2pRequestCode = 126 // peer-to-peer message, used by Dapp protocol
p2pMessageCode = 127 // peer-to-peer message (to be consumed by the peer, but not forwarded any further)
NumberOfMessageCodes = 128
SizeMask = byte(3) // mask used to extract the size of payload size field from the flags
signatureFlag = byte(4)
TopicLength = 4 // in bytes
signatureLength = crypto.SignatureLength // in bytes
aesKeyLength = 32 // in bytes
aesNonceLength = 12 // in bytes; for more info please see cipher.gcmStandardNonceSize & aesgcm.NonceSize()
keyIDSize = 32 // in bytes
BloomFilterSize = 64 // in bytes
flagsLength = 1
EnvelopeHeaderLength = 20
MaxMessageSize = uint32(10 * 1024 * 1024) // maximum accepted size of a message.
DefaultMaxMessageSize = uint32(1024 * 1024)
DefaultMinimumPoW = 0.2
padSizeLimit = 256 // just an arbitrary number, could be changed without breaking the protocol
messageQueueLimit = 1024
expirationCycle = time.Second
transmissionCycle = 300 * time.Millisecond
DefaultTTL = 50 // seconds
DefaultSyncAllowance = 10 // seconds
)
// MailServer represents a mail server, capable of
// archiving the old messages for subsequent delivery
// to the peers. Any implementation must ensure that both
// functions are thread-safe. Also, they must return ASAP.
// DeliverMail should use directMessagesCode for delivery,
// in order to bypass the expiry checks.
type MailServer interface {
Archive(env *Envelope)
DeliverMail(whisperPeer *Peer, request *Envelope)
}
whisper/whisperv6/envelope.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// Contains the Whisper protocol Envelope element.
package whisperv6
import (
"crypto/ecdsa"
"encoding/binary"
"fmt"
gmath "math"
"math/big"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/crypto/ecies"
"github.com/ethereum/go-ethereum/rlp"
)
// Envelope represents a clear-text data packet to transmit through the Whisper
// network. Its contents may or may not be encrypted and signed.
type Envelope struct {
Expiry uint32
TTL uint32
Topic TopicType
Data []byte
Nonce uint64
pow float64 // Message-specific PoW as described in the Whisper specification.
// the following variables should not be accessed directly, use the corresponding function instead: Hash(), Bloom()
hash common.Hash // Cached hash of the envelope to avoid rehashing every time.
bloom []byte
}
// size returns the size of envelope as it is sent (i.e. public fields only)
func (e *Envelope) size() int {
return EnvelopeHeaderLength + len(e.Data)
}
// rlpWithoutNonce returns the RLP encoded envelope contents, except the nonce.
func (e *Envelope) rlpWithoutNonce() []byte {
res, _ := rlp.EncodeToBytes([]interface{}{e.Expiry, e.TTL, e.Topic, e.Data})
return res
}
// NewEnvelope wraps a Whisper message with expiration and destination data
// included into an envelope for network forwarding.
func NewEnvelope(ttl uint32, topic TopicType, msg *sentMessage) *Envelope {
env := Envelope{
Expiry: uint32(time.Now().Add(time.Second * time.Duration(ttl)).Unix()),
TTL: ttl,
Topic: topic,
Data: msg.Raw,
Nonce: 0,
}
return &env
}
// Seal closes the envelope by spending the requested amount of time as a proof
// of work on hashing the data.
func (e *Envelope) Seal(options *MessageParams) error {
if options.PoW == 0 {
// PoW is not required
return nil
}
var target, bestLeadingZeros int
if options.PoW < 0 {
// target is not set - the function should run for a period
// of time specified in WorkTime param. Since we can predict
// the execution time, we can also adjust Expiry.
e.Expiry += options.WorkTime
} else {
target = e.powToFirstBit(options.PoW)
}
rlp := e.rlpWithoutNonce()
buf := make([]byte, len(rlp)+8)
copy(buf, rlp)
asAnInt := new(big.Int)
finish := time.Now().Add(time.Duration(options.WorkTime) * time.Second).UnixNano()
for nonce := uint64(0); time.Now().UnixNano() < finish; {
for i := 0; i < 1024; i++ {
binary.BigEndian.PutUint64(buf[len(rlp):], nonce)
h := crypto.Keccak256(buf)
asAnInt.SetBytes(h)
leadingZeros := 256 - asAnInt.BitLen()
if leadingZeros > bestLeadingZeros {
e.Nonce, bestLeadingZeros = nonce, leadingZeros
if target > 0 && bestLeadingZeros >= target {
return nil
}
}
nonce++
}
}
if target > 0 && bestLeadingZeros < target {
return fmt.Errorf("failed to reach the PoW target, specified pow time (%d seconds) was insufficient", options.WorkTime)
}
return nil
}
// PoW computes (if necessary) and returns the proof of work target
// of the envelope.
func (e *Envelope) PoW() float64 {
if e.pow == 0 {
e.calculatePoW(0)
}
return e.pow
}
func (e *Envelope) calculatePoW(diff uint32) {
rlp := e.rlpWithoutNonce()
buf := make([]byte, len(rlp)+8)
copy(buf, rlp)
binary.BigEndian.PutUint64(buf[len(rlp):], e.Nonce)
powHash := new(big.Int).SetBytes(crypto.Keccak256(buf))
leadingZeroes := 256 - powHash.BitLen()
x := gmath.Pow(2, float64(leadingZeroes))
x /= float64(len(rlp))
x /= float64(e.TTL + diff)
e.pow = x
}
func (e *Envelope) powToFirstBit(pow float64) int {
x := pow
x *= float64(e.size())
x *= float64(e.TTL)
bits := gmath.Log2(x)
bits = gmath.Ceil(bits)
res := int(bits)
if res < 1 {
res = 1
}
return res
}
// Hash returns the SHA3 hash of the envelope, calculating it if not yet done.
func (e *Envelope) Hash() common.Hash {
if (e.hash == common.Hash{}) {
encoded, _ := rlp.EncodeToBytes(e)
e.hash = crypto.Keccak256Hash(encoded)
}
return e.hash
}
// DecodeRLP decodes an Envelope from an RLP data stream.
func (e *Envelope) DecodeRLP(s *rlp.Stream) error {
raw, err := s.Raw()
if err != nil {
return err
}
// The decoding of Envelope uses the struct fields but also needs
// to compute the hash of the whole RLP-encoded envelope. This
// type has the same structure as Envelope but is not an
// rlp.Decoder (does not implement DecodeRLP function).
// Only public members will be encoded.
type rlpenv Envelope
if err := rlp.DecodeBytes(raw, (*rlpenv)(e)); err != nil {
return err
}
e.hash = crypto.Keccak256Hash(raw)
return nil
}
// OpenAsymmetric tries to decrypt an envelope, potentially encrypted with a particular key.
func (e *Envelope) OpenAsymmetric(key *ecdsa.PrivateKey) (*ReceivedMessage, error) {
message := &ReceivedMessage{Raw: e.Data}
err := message.decryptAsymmetric(key)
switch err {
case nil:
return message, nil
case ecies.ErrInvalidPublicKey: // addressed to somebody else
return nil, err
default:
return nil, fmt.Errorf("unable to open envelope, decrypt failed: %v", err)
}
}
// OpenSymmetric tries to decrypt an envelope, potentially encrypted with a particular key.
func (e *Envelope) OpenSymmetric(key []byte) (msg *ReceivedMessage, err error) {
msg = &ReceivedMessage{Raw: e.Data}
err = msg.decryptSymmetric(key)
if err != nil {
msg = nil
}
return msg, err
}
// Open tries to decrypt an envelope, and populates the message fields in case of success.
func (e *Envelope) Open(watcher *Filter) (msg *ReceivedMessage) {
if watcher == nil {
return nil
}
// The API interface forbids filters doing both symmetric and asymmetric encryption.
if watcher.expectsAsymmetricEncryption() && watcher.expectsSymmetricEncryption() {
return nil
}
if watcher.expectsAsymmetricEncryption() {
msg, _ = e.OpenAsymmetric(watcher.KeyAsym)
if msg != nil {
msg.Dst = &watcher.KeyAsym.PublicKey
}
} else if watcher.expectsSymmetricEncryption() {
msg, _ = e.OpenSymmetric(watcher.KeySym)
if msg != nil {
msg.SymKeyHash = crypto.Keccak256Hash(watcher.KeySym)
}
}
if msg != nil {
ok := msg.ValidateAndParse()
if !ok {
return nil
}
msg.Topic = e.Topic
msg.PoW = e.PoW()
msg.TTL = e.TTL
msg.Sent = e.Expiry - e.TTL
msg.EnvelopeHash = e.Hash()
}
return msg
}
// Bloom maps 4-bytes Topic into 64-byte bloom filter with 3 bits set (at most).
func (e *Envelope) Bloom() []byte {
if e.bloom == nil {
e.bloom = TopicToBloom(e.Topic)
}
return e.bloom
}
// TopicToBloom converts the topic (4 bytes) to the bloom filter (64 bytes)
func TopicToBloom(topic TopicType) []byte {
b := make([]byte, BloomFilterSize)
var index [3]int
for j := 0; j < 3; j++ {
index[j] = int(topic[j])
if (topic[3] & (1 << uint(j))) != 0 {
index[j] += 256
}
}
for j := 0; j < 3; j++ {
byteIndex := index[j] / 8
bitIndex := index[j] % 8
b[byteIndex] = (1 << uint(bitIndex))
}
return b
}
// GetEnvelope retrieves an envelope from the message queue by its hash.
// It returns nil if the envelope can not be found.
func (w *Whisper) GetEnvelope(hash common.Hash) *Envelope {
w.poolMu.RLock()
defer w.poolMu.RUnlock()
return w.envelopes[hash]
}
whisper/whisperv6/envelope_test.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// Contains the tests associated with the Whisper protocol Envelope object.
package whisperv6
import (
mrand "math/rand"
"testing"
"github.com/ethereum/go-ethereum/crypto"
)
func TestPoWCalculationsWithNoLeadingZeros(t *testing.T) {
e := Envelope{
TTL: 1,
Data: []byte{0xde, 0xad, 0xbe, 0xef},
Nonce: 100000,
}
e.calculatePoW(0)
if e.pow != 0.07692307692307693 {
t.Fatalf("invalid PoW calculation. Expected 0.07692307692307693, got %v", e.pow)
}
}
func TestPoWCalculationsWith8LeadingZeros(t *testing.T) {
e := Envelope{
TTL: 1,
Data: []byte{0xde, 0xad, 0xbe, 0xef},
Nonce: 276,
}
e.calculatePoW(0)
if e.pow != 19.692307692307693 {
t.Fatalf("invalid PoW calculation. Expected 19.692307692307693, got %v", e.pow)
}
}
func TestEnvelopeOpenAcceptsOnlyOneKeyTypeInFilter(t *testing.T) {
symKey := make([]byte, aesKeyLength)
mrand.Read(symKey)
asymKey, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("failed GenerateKey with seed %d: %s.", seed, err)
}
params := MessageParams{
PoW: 0.01,
WorkTime: 1,
TTL: uint32(mrand.Intn(1024)),
Payload: make([]byte, 50),
KeySym: symKey,
Dst: nil,
}
mrand.Read(params.Payload)
msg, err := NewSentMessage(&params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
e, err := msg.Wrap(&params)
if err != nil {
t.Fatalf("Failed to Wrap the message in an envelope with seed %d: %s", seed, err)
}
f := Filter{KeySym: symKey, KeyAsym: asymKey}
decrypted := e.Open(&f)
if decrypted != nil {
t.Fatalf("Managed to decrypt a message with an invalid filter, seed %d", seed)
}
}
whisper/whisperv6/filter.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv6
import (
"crypto/ecdsa"
"fmt"
"sync"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/log"
)
// Filter represents a Whisper message filter
type Filter struct {
Src *ecdsa.PublicKey // Sender of the message
KeyAsym *ecdsa.PrivateKey // Private Key of recipient
KeySym []byte // Key associated with the Topic
Topics [][]byte // Topics to filter messages with
PoW float64 // Proof of work as described in the Whisper spec
AllowP2P bool // Indicates whether this filter is interested in direct peer-to-peer messages
SymKeyHash common.Hash // The Keccak256Hash of the symmetric key, needed for optimization
id string // unique identifier
Messages map[common.Hash]*ReceivedMessage
mutex sync.RWMutex
}
// Filters represents a collection of filters
type Filters struct {
watchers map[string]*Filter
topicMatcher map[TopicType]map[*Filter]struct{} // map a topic to the filters that are interested in being notified when a message matches that topic
allTopicsMatcher map[*Filter]struct{} // list all the filters that will be notified of a new message, no matter what its topic is
whisper *Whisper
mutex sync.RWMutex
}
// NewFilters returns a newly created filter collection
func NewFilters(w *Whisper) *Filters {
return &Filters{
watchers: make(map[string]*Filter),
topicMatcher: make(map[TopicType]map[*Filter]struct{}),
allTopicsMatcher: make(map[*Filter]struct{}),
whisper: w,
}
}
// Install will add a new filter to the filter collection
func (fs *Filters) Install(watcher *Filter) (string, error) {
if watcher.KeySym != nil && watcher.KeyAsym != nil {
return "", fmt.Errorf("filters must choose between symmetric and asymmetric keys")
}
if watcher.Messages == nil {
watcher.Messages = make(map[common.Hash]*ReceivedMessage)
}
id, err := GenerateRandomID()
if err != nil {
return "", err
}
fs.mutex.Lock()
defer fs.mutex.Unlock()
if fs.watchers[id] != nil {
return "", fmt.Errorf("failed to generate unique ID")
}
if watcher.expectsSymmetricEncryption() {
watcher.SymKeyHash = crypto.Keccak256Hash(watcher.KeySym)
}
watcher.id = id
fs.watchers[id] = watcher
fs.addTopicMatcher(watcher)
return id, err
}
// Uninstall will remove a filter whose id has been specified from
// the filter collection
func (fs *Filters) Uninstall(id string) bool {
fs.mutex.Lock()
defer fs.mutex.Unlock()
if fs.watchers[id] != nil {
fs.removeFromTopicMatchers(fs.watchers[id])
delete(fs.watchers, id)
return true
}
return false
}
// addTopicMatcher adds a filter to the topic matchers.
// If the filter's Topics array is empty, it will be tried on every topic.
// Otherwise, it will be tried on the topics specified.
func (fs *Filters) addTopicMatcher(watcher *Filter) {
if len(watcher.Topics) == 0 {
fs.allTopicsMatcher[watcher] = struct{}{}
} else {
for _, t := range watcher.Topics {
topic := BytesToTopic(t)
if fs.topicMatcher[topic] == nil {
fs.topicMatcher[topic] = make(map[*Filter]struct{})
}
fs.topicMatcher[topic][watcher] = struct{}{}
}
}
}
// removeFromTopicMatchers removes a filter from the topic matchers
func (fs *Filters) removeFromTopicMatchers(watcher *Filter) {
delete(fs.allTopicsMatcher, watcher)
for _, topic := range watcher.Topics {
delete(fs.topicMatcher[BytesToTopic(topic)], watcher)
}
}
// getWatchersByTopic returns a slice containing the filters that
// match a specific topic
func (fs *Filters) getWatchersByTopic(topic TopicType) []*Filter {
res := make([]*Filter, 0, len(fs.allTopicsMatcher))
for watcher := range fs.allTopicsMatcher {
res = append(res, watcher)
}
for watcher := range fs.topicMatcher[topic] {
res = append(res, watcher)
}
return res
}
// Get returns a filter from the collection with a specific ID
func (fs *Filters) Get(id string) *Filter {
fs.mutex.RLock()
defer fs.mutex.RUnlock()
return fs.watchers[id]
}
// NotifyWatchers notifies any filter that has declared interest
// for the envelope's topic.
func (fs *Filters) NotifyWatchers(env *Envelope, p2pMessage bool) {
var msg *ReceivedMessage
fs.mutex.RLock()
defer fs.mutex.RUnlock()
candidates := fs.getWatchersByTopic(env.Topic)
for _, watcher := range candidates {
if p2pMessage && !watcher.AllowP2P {
log.Trace(fmt.Sprintf("msg [%x], filter [%s]: p2p messages are not allowed", env.Hash(), watcher.id))
continue
}
var match bool
if msg != nil {
match = watcher.MatchMessage(msg)
} else {
match = watcher.MatchEnvelope(env)
if match {
msg = env.Open(watcher)
if msg == nil {
log.Trace("processing message: failed to open", "message", env.Hash().Hex(), "filter", watcher.id)
}
} else {
log.Trace("processing message: does not match", "message", env.Hash().Hex(), "filter", watcher.id)
}
}
if match && msg != nil {
log.Trace("processing message: decrypted", "hash", env.Hash().Hex())
if watcher.Src == nil || IsPubKeyEqual(msg.Src, watcher.Src) {
watcher.Trigger(msg)
}
}
}
}
func (f *Filter) expectsAsymmetricEncryption() bool {
return f.KeyAsym != nil
}
func (f *Filter) expectsSymmetricEncryption() bool {
return f.KeySym != nil
}
// Trigger adds a yet-unknown message to the filter's list of
// received messages.
func (f *Filter) Trigger(msg *ReceivedMessage) {
f.mutex.Lock()
defer f.mutex.Unlock()
if _, exist := f.Messages[msg.EnvelopeHash]; !exist {
f.Messages[msg.EnvelopeHash] = msg
}
}
// Retrieve will return the list of all received messages associated
// to a filter.
func (f *Filter) Retrieve() (all []*ReceivedMessage) {
f.mutex.Lock()
defer f.mutex.Unlock()
all = make([]*ReceivedMessage, 0, len(f.Messages))
for _, msg := range f.Messages {
all = append(all, msg)
}
f.Messages = make(map[common.Hash]*ReceivedMessage) // delete old messages
return all
}
// MatchMessage checks if the filter matches an already decrypted
// message (i.e. a Message that has already been handled by
// MatchEnvelope when checked by a previous filter).
// Topics are not checked here, since this is done by topic matchers.
func (f *Filter) MatchMessage(msg *ReceivedMessage) bool {
if f.PoW > 0 && msg.PoW < f.PoW {
return false
}
if f.expectsAsymmetricEncryption() && msg.isAsymmetricEncryption() {
return IsPubKeyEqual(&f.KeyAsym.PublicKey, msg.Dst)
} else if f.expectsSymmetricEncryption() && msg.isSymmetricEncryption() {
return f.SymKeyHash == msg.SymKeyHash
}
return false
}
// MatchEnvelope checks if it's worth decrypting the message. If
// it returns `true`, client code is expected to attempt decrypting
// the message and subsequently call MatchMessage.
// Topics are not checked here, since this is done by topic matchers.
func (f *Filter) MatchEnvelope(envelope *Envelope) bool {
return f.PoW <= 0 || envelope.pow >= f.PoW
}
// IsPubKeyEqual checks that two public keys are equal
func IsPubKeyEqual(a, b *ecdsa.PublicKey) bool {
if !ValidatePublicKey(a) {
return false
} else if !ValidatePublicKey(b) {
return false
}
// the curve is always the same, just compare the points
return a.X.Cmp(b.X) == 0 && a.Y.Cmp(b.Y) == 0
}
whisper/whisperv6/filter_test.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv6
import (
"math/big"
mrand "math/rand"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
)
var seed int64
// InitSingleTest should be called in the beginning of every
// test, which uses RNG, in order to make the tests
// reproduciblity independent of their sequence.
func InitSingleTest() {
seed = time.Now().Unix()
mrand.Seed(seed)
}
type FilterTestCase struct {
f *Filter
id string
alive bool
msgCnt int
}
func generateFilter(t *testing.T, symmetric bool) (*Filter, error) {
var f Filter
f.Messages = make(map[common.Hash]*ReceivedMessage)
const topicNum = 8
f.Topics = make([][]byte, topicNum)
for i := 0; i < topicNum; i++ {
f.Topics[i] = make([]byte, 4)
mrand.Read(f.Topics[i])
f.Topics[i][0] = 0x01
}
key, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("generateFilter 1 failed with seed %d.", seed)
return nil, err
}
f.Src = &key.PublicKey
if symmetric {
f.KeySym = make([]byte, aesKeyLength)
mrand.Read(f.KeySym)
f.SymKeyHash = crypto.Keccak256Hash(f.KeySym)
} else {
f.KeyAsym, err = crypto.GenerateKey()
if err != nil {
t.Fatalf("generateFilter 2 failed with seed %d.", seed)
return nil, err
}
}
// AcceptP2P & PoW are not set
return &f, nil
}
func generateTestCases(t *testing.T, SizeTestFilters int) []FilterTestCase {
cases := make([]FilterTestCase, SizeTestFilters)
for i := 0; i < SizeTestFilters; i++ {
f, _ := generateFilter(t, true)
cases[i].f = f
cases[i].alive = mrand.Int()&int(1) == 0
}
return cases
}
func TestInstallFilters(t *testing.T) {
InitSingleTest()
const SizeTestFilters = 256
stack, w := newNodeWithWhisper(t)
defer stack.Close()
filters := NewFilters(w)
tst := generateTestCases(t, SizeTestFilters)
var err error
var j string
for i := 0; i < SizeTestFilters; i++ {
j, err = filters.Install(tst[i].f)
if err != nil {
t.Fatalf("seed %d: failed to install filter: %s", seed, err)
}
tst[i].id = j
if len(j) != keyIDSize*2 {
t.Fatalf("seed %d: wrong filter id size [%d]", seed, len(j))
}
}
for _, testCase := range tst {
if !testCase.alive {
filters.Uninstall(testCase.id)
}
}
for i, testCase := range tst {
fil := filters.Get(testCase.id)
exist := fil != nil
if exist != testCase.alive {
t.Fatalf("seed %d: failed alive: %d, %v, %v", seed, i, exist, testCase.alive)
}
if exist && fil.PoW != testCase.f.PoW {
t.Fatalf("seed %d: failed Get: %d, %v, %v", seed, i, exist, testCase.alive)
}
}
}
func TestInstallSymKeyGeneratesHash(t *testing.T) {
InitSingleTest()
stack, w := newNodeWithWhisper(t)
defer stack.Close()
filters := NewFilters(w)
filter, _ := generateFilter(t, true)
// save the current SymKeyHash for comparison
initialSymKeyHash := filter.SymKeyHash
// ensure the SymKeyHash is invalid, for Install to recreate it
var invalid common.Hash
filter.SymKeyHash = invalid
_, err := filters.Install(filter)
if err != nil {
t.Fatalf("Error installing the filter: %s", err)
}
for i, b := range filter.SymKeyHash {
if b != initialSymKeyHash[i] {
t.Fatalf("The filter's symmetric key hash was not properly generated by Install")
}
}
}
func TestInstallIdenticalFilters(t *testing.T) {
InitSingleTest()
stack, w := newNodeWithWhisper(t)
defer stack.Close()
filters := NewFilters(w)
filter1, _ := generateFilter(t, true)
// Copy the first filter since some of its fields
// are randomly gnerated.
filter2 := &Filter{
KeySym: filter1.KeySym,
Topics: filter1.Topics,
PoW: filter1.PoW,
AllowP2P: filter1.AllowP2P,
Messages: make(map[common.Hash]*ReceivedMessage),
}
_, err := filters.Install(filter1)
if err != nil {
t.Fatalf("Error installing the first filter with seed %d: %s", seed, err)
}
_, err = filters.Install(filter2)
if err != nil {
t.Fatalf("Error installing the second filter with seed %d: %s", seed, err)
}
params, err := generateMessageParams()
if err != nil {
t.Fatalf("Error generating message parameters with seed %d: %s", seed, err)
}
params.KeySym = filter1.KeySym
params.Topic = BytesToTopic(filter1.Topics[0])
filter1.Src = &params.Src.PublicKey
filter2.Src = &params.Src.PublicKey
sentMessage, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := sentMessage.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
msg := env.Open(filter1)
if msg == nil {
t.Fatalf("failed to Open with filter1")
}
if !filter1.MatchEnvelope(env) {
t.Fatalf("failed matching with the first filter")
}
if !filter2.MatchEnvelope(env) {
t.Fatalf("failed matching with the first filter")
}
if !filter1.MatchMessage(msg) {
t.Fatalf("failed matching with the second filter")
}
if !filter2.MatchMessage(msg) {
t.Fatalf("failed matching with the second filter")
}
}
func TestInstallFilterWithSymAndAsymKeys(t *testing.T) {
InitSingleTest()
stack, w := newNodeWithWhisper(t)
defer stack.Close()
filters := NewFilters(w)
filter1, _ := generateFilter(t, true)
asymKey, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("Unable to create asymetric keys: %v", err)
}
// Copy the first filter since some of its fields
// are randomly gnerated.
filter := &Filter{
KeySym: filter1.KeySym,
KeyAsym: asymKey,
Topics: filter1.Topics,
PoW: filter1.PoW,
AllowP2P: filter1.AllowP2P,
Messages: make(map[common.Hash]*ReceivedMessage),
}
_, err = filters.Install(filter)
if err == nil {
t.Fatalf("Error detecting that a filter had both an asymmetric and symmetric key, with seed %d", seed)
}
}
func TestComparePubKey(t *testing.T) {
InitSingleTest()
key1, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("failed to generate first key with seed %d: %s.", seed, err)
}
key2, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("failed to generate second key with seed %d: %s.", seed, err)
}
if IsPubKeyEqual(&key1.PublicKey, &key2.PublicKey) {
t.Fatalf("public keys are equal, seed %d.", seed)
}
// generate key3 == key1
mrand.Seed(seed)
key3, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("failed to generate third key with seed %d: %s.", seed, err)
}
if IsPubKeyEqual(&key1.PublicKey, &key3.PublicKey) {
t.Fatalf("key1 == key3, seed %d.", seed)
}
}
func TestMatchEnvelope(t *testing.T) {
InitSingleTest()
fsym, err := generateFilter(t, true)
if err != nil {
t.Fatalf("failed generateFilter with seed %d: %s.", seed, err)
}
fasym, err := generateFilter(t, false)
if err != nil {
t.Fatalf("failed generateFilter() with seed %d: %s.", seed, err)
}
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
params.Topic[0] = 0xFF // topic mismatch
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
if _, err = msg.Wrap(params); err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
// encrypt symmetrically
i := mrand.Int() % 4
fsym.Topics[i] = params.Topic[:]
fasym.Topics[i] = params.Topic[:]
msg, err = NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap() with seed %d: %s.", seed, err)
}
// symmetric + matching topic: match
match := fsym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope() symmetric with seed %d.", seed)
}
// symmetric + matching topic + insufficient PoW: mismatch
fsym.PoW = env.PoW() + 1.0
match = fsym.MatchEnvelope(env)
if match {
t.Fatalf("failed MatchEnvelope(symmetric + matching topic + insufficient PoW) asymmetric with seed %d.", seed)
}
// symmetric + matching topic + sufficient PoW: match
fsym.PoW = env.PoW() / 2
match = fsym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(symmetric + matching topic + sufficient PoW) with seed %d.", seed)
}
// symmetric + topics are nil (wildcard): match
prevTopics := fsym.Topics
fsym.Topics = nil
match = fsym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(symmetric + topics are nil) with seed %d.", seed)
}
fsym.Topics = prevTopics
// encrypt asymmetrically
key, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("failed GenerateKey with seed %d: %s.", seed, err)
}
params.KeySym = nil
params.Dst = &key.PublicKey
msg, err = NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err = msg.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap() with seed %d: %s.", seed, err)
}
// encryption method mismatch
match = fsym.MatchEnvelope(env)
if match {
t.Fatalf("failed MatchEnvelope(encryption method mismatch) with seed %d.", seed)
}
// asymmetric + mismatching topic: mismatch
match = fasym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(asymmetric + mismatching topic) with seed %d.", seed)
}
// asymmetric + matching topic: match
fasym.Topics[i] = fasym.Topics[i+1]
match = fasym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(asymmetric + matching topic) with seed %d.", seed)
}
// asymmetric + filter without topic (wildcard): match
fasym.Topics = nil
match = fasym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(asymmetric + filter without topic) with seed %d.", seed)
}
// asymmetric + insufficient PoW: mismatch
fasym.PoW = env.PoW() + 1.0
match = fasym.MatchEnvelope(env)
if match {
t.Fatalf("failed MatchEnvelope(asymmetric + insufficient PoW) with seed %d.", seed)
}
// asymmetric + sufficient PoW: match
fasym.PoW = env.PoW() / 2
match = fasym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(asymmetric + sufficient PoW) with seed %d.", seed)
}
// filter without topic + envelope without topic: match
env.Topic = TopicType{}
match = fasym.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope(filter without topic + envelope without topic) with seed %d.", seed)
}
// filter with topic + envelope without topic: mismatch
fasym.Topics = fsym.Topics
match = fasym.MatchEnvelope(env)
if !match {
// topic mismatch should have no affect, as topics are handled by topic matchers
t.Fatalf("failed MatchEnvelope(filter without topic + envelope without topic) with seed %d.", seed)
}
}
func TestMatchMessageSym(t *testing.T) {
InitSingleTest()
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
f, err := generateFilter(t, true)
if err != nil {
t.Fatalf("failed generateFilter with seed %d: %s.", seed, err)
}
const index = 1
params.KeySym = f.KeySym
params.Topic = BytesToTopic(f.Topics[index])
sentMessage, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := sentMessage.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
msg := env.Open(f)
if msg == nil {
t.Fatalf("failed Open with seed %d.", seed)
}
// Src: match
*f.Src.X = *params.Src.PublicKey.X
*f.Src.Y = *params.Src.PublicKey.Y
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(src match) with seed %d.", seed)
}
// insufficient PoW: mismatch
f.PoW = msg.PoW + 1.0
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(insufficient PoW) with seed %d.", seed)
}
// sufficient PoW: match
f.PoW = msg.PoW / 2
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(sufficient PoW) with seed %d.", seed)
}
// topic mismatch
f.Topics[index][0]++
if !f.MatchMessage(msg) {
// topic mismatch should have no affect, as topics are handled by topic matchers
t.Fatalf("failed MatchEnvelope(topic mismatch) with seed %d.", seed)
}
f.Topics[index][0]--
// key mismatch
f.SymKeyHash[0]++
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(key mismatch) with seed %d.", seed)
}
f.SymKeyHash[0]--
// Src absent: match
f.Src = nil
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(src absent) with seed %d.", seed)
}
// key hash mismatch
h := f.SymKeyHash
f.SymKeyHash = common.Hash{}
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(key hash mismatch) with seed %d.", seed)
}
f.SymKeyHash = h
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(key hash match) with seed %d.", seed)
}
// encryption method mismatch
f.KeySym = nil
f.KeyAsym, err = crypto.GenerateKey()
if err != nil {
t.Fatalf("failed GenerateKey with seed %d: %s.", seed, err)
}
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(encryption method mismatch) with seed %d.", seed)
}
}
func TestMatchMessageAsym(t *testing.T) {
InitSingleTest()
f, err := generateFilter(t, false)
if err != nil {
t.Fatalf("failed generateFilter with seed %d: %s.", seed, err)
}
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
const index = 1
params.Topic = BytesToTopic(f.Topics[index])
params.Dst = &f.KeyAsym.PublicKey
keySymOrig := params.KeySym
params.KeySym = nil
sentMessage, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := sentMessage.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
msg := env.Open(f)
if msg == nil {
t.Fatalf("failed to open with seed %d.", seed)
}
// Src: match
*f.Src.X = *params.Src.PublicKey.X
*f.Src.Y = *params.Src.PublicKey.Y
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchMessage(src match) with seed %d.", seed)
}
// insufficient PoW: mismatch
f.PoW = msg.PoW + 1.0
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(insufficient PoW) with seed %d.", seed)
}
// sufficient PoW: match
f.PoW = msg.PoW / 2
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(sufficient PoW) with seed %d.", seed)
}
// topic mismatch
f.Topics[index][0]++
if !f.MatchMessage(msg) {
// topic mismatch should have no affect, as topics are handled by topic matchers
t.Fatalf("failed MatchEnvelope(topic mismatch) with seed %d.", seed)
}
f.Topics[index][0]--
// key mismatch
prev := *f.KeyAsym.PublicKey.X
zero := *big.NewInt(0)
*f.KeyAsym.PublicKey.X = zero
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(key mismatch) with seed %d.", seed)
}
*f.KeyAsym.PublicKey.X = prev
// Src absent: match
f.Src = nil
if !f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(src absent) with seed %d.", seed)
}
// encryption method mismatch
f.KeySym = keySymOrig
f.KeyAsym = nil
if f.MatchMessage(msg) {
t.Fatalf("failed MatchEnvelope(encryption method mismatch) with seed %d.", seed)
}
}
func cloneFilter(orig *Filter) *Filter {
var clone Filter
clone.Messages = make(map[common.Hash]*ReceivedMessage)
clone.Src = orig.Src
clone.KeyAsym = orig.KeyAsym
clone.KeySym = orig.KeySym
clone.Topics = orig.Topics
clone.PoW = orig.PoW
clone.AllowP2P = orig.AllowP2P
clone.SymKeyHash = orig.SymKeyHash
return &clone
}
func generateCompatibeEnvelope(t *testing.T, f *Filter) *Envelope {
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
return nil
}
params.KeySym = f.KeySym
params.Topic = BytesToTopic(f.Topics[2])
sentMessage, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := sentMessage.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
return nil
}
return env
}
func TestWatchers(t *testing.T) {
InitSingleTest()
const NumFilters = 16
const NumMessages = 256
var i int
var j uint32
var e *Envelope
var x, firstID string
var err error
stack, w := newNodeWithWhisper(t)
defer stack.Close()
filters := NewFilters(w)
tst := generateTestCases(t, NumFilters)
for i = 0; i < NumFilters; i++ {
tst[i].f.Src = nil
x, err = filters.Install(tst[i].f)
if err != nil {
t.Fatalf("failed to install filter with seed %d: %s.", seed, err)
}
tst[i].id = x
if len(firstID) == 0 {
firstID = x
}
}
lastID := x
var envelopes [NumMessages]*Envelope
for i = 0; i < NumMessages; i++ {
j = mrand.Uint32() % NumFilters
e = generateCompatibeEnvelope(t, tst[j].f)
envelopes[i] = e
tst[j].msgCnt++
}
for i = 0; i < NumMessages; i++ {
filters.NotifyWatchers(envelopes[i], false)
}
var total int
var mail []*ReceivedMessage
var count [NumFilters]int
for i = 0; i < NumFilters; i++ {
mail = tst[i].f.Retrieve()
count[i] = len(mail)
total += len(mail)
}
if total != NumMessages {
t.Fatalf("failed with seed %d: total = %d, want: %d.", seed, total, NumMessages)
}
for i = 0; i < NumFilters; i++ {
mail = tst[i].f.Retrieve()
if len(mail) != 0 {
t.Fatalf("failed with seed %d: i = %d.", seed, i)
}
if tst[i].msgCnt != count[i] {
t.Fatalf("failed with seed %d: count[%d]: get %d, want %d.", seed, i, tst[i].msgCnt, count[i])
}
}
// another round with a cloned filter
clone := cloneFilter(tst[0].f)
filters.Uninstall(lastID)
total = 0
last := NumFilters - 1
tst[last].f = clone
filters.Install(clone)
for i = 0; i < NumFilters; i++ {
tst[i].msgCnt = 0
count[i] = 0
}
// make sure that the first watcher receives at least one message
e = generateCompatibeEnvelope(t, tst[0].f)
envelopes[0] = e
tst[0].msgCnt++
for i = 1; i < NumMessages; i++ {
j = mrand.Uint32() % NumFilters
e = generateCompatibeEnvelope(t, tst[j].f)
envelopes[i] = e
tst[j].msgCnt++
}
for i = 0; i < NumMessages; i++ {
filters.NotifyWatchers(envelopes[i], false)
}
for i = 0; i < NumFilters; i++ {
mail = tst[i].f.Retrieve()
count[i] = len(mail)
total += len(mail)
}
combined := tst[0].msgCnt + tst[last].msgCnt
if total != NumMessages+count[0] {
t.Fatalf("failed with seed %d: total = %d, count[0] = %d.", seed, total, count[0])
}
if combined != count[0] {
t.Fatalf("failed with seed %d: combined = %d, count[0] = %d.", seed, combined, count[0])
}
if combined != count[last] {
t.Fatalf("failed with seed %d: combined = %d, count[last] = %d.", seed, combined, count[last])
}
for i = 1; i < NumFilters-1; i++ {
mail = tst[i].f.Retrieve()
if len(mail) != 0 {
t.Fatalf("failed with seed %d: i = %d.", seed, i)
}
if tst[i].msgCnt != count[i] {
t.Fatalf("failed with seed %d: i = %d, get %d, want %d.", seed, i, tst[i].msgCnt, count[i])
}
}
// test AcceptP2P
total = 0
filters.NotifyWatchers(envelopes[0], true)
for i = 0; i < NumFilters; i++ {
mail = tst[i].f.Retrieve()
total += len(mail)
}
if total != 0 {
t.Fatalf("failed with seed %d: total: got %d, want 0.", seed, total)
}
f := filters.Get(firstID)
if f == nil {
t.Fatalf("failed to get the filter with seed %d.", seed)
}
f.AllowP2P = true
total = 0
filters.NotifyWatchers(envelopes[0], true)
for i = 0; i < NumFilters; i++ {
mail = tst[i].f.Retrieve()
total += len(mail)
}
if total != 1 {
t.Fatalf("failed with seed %d: total: got %d, want 1.", seed, total)
}
}
func TestVariableTopics(t *testing.T) {
InitSingleTest()
const lastTopicByte = 3
var match bool
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
f, err := generateFilter(t, true)
if err != nil {
t.Fatalf("failed generateFilter with seed %d: %s.", seed, err)
}
for i := 0; i < 4; i++ {
env.Topic = BytesToTopic(f.Topics[i])
match = f.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope symmetric with seed %d, step %d.", seed, i)
}
f.Topics[i][lastTopicByte]++
match = f.MatchEnvelope(env)
if !match {
// topic mismatch should have no affect, as topics are handled by topic matchers
t.Fatalf("MatchEnvelope symmetric with seed %d, step %d.", seed, i)
}
}
}
whisper/whisperv6/gen_criteria_json.go deleted 100644 → 0
View file @ c5d28f0b
// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
package whisperv6
import (
"encoding/json"
"github.com/ethereum/go-ethereum/common/hexutil"
)
var _ = (*criteriaOverride)(nil)
// MarshalJSON marshals type Criteria to a json string
func (c Criteria) MarshalJSON() ([]byte, error) {
type Criteria struct {
SymKeyID string `json:"symKeyID"`
PrivateKeyID string `json:"privateKeyID"`
Sig hexutil.Bytes `json:"sig"`
MinPow float64 `json:"minPow"`
Topics []TopicType `json:"topics"`
AllowP2P bool `json:"allowP2P"`
}
var enc Criteria
enc.SymKeyID = c.SymKeyID
enc.PrivateKeyID = c.PrivateKeyID
enc.Sig = c.Sig
enc.MinPow = c.MinPow
enc.Topics = c.Topics
enc.AllowP2P = c.AllowP2P
return json.Marshal(&enc)
}
// UnmarshalJSON unmarshals type Criteria to a json string
func (c *Criteria) UnmarshalJSON(input []byte) error {
type Criteria struct {
SymKeyID *string `json:"symKeyID"`
PrivateKeyID *string `json:"privateKeyID"`
Sig *hexutil.Bytes `json:"sig"`
MinPow *float64 `json:"minPow"`
Topics []TopicType `json:"topics"`
AllowP2P *bool `json:"allowP2P"`
}
var dec Criteria
if err := json.Unmarshal(input, &dec); err != nil {
return err
}
if dec.SymKeyID != nil {
c.SymKeyID = *dec.SymKeyID
}
if dec.PrivateKeyID != nil {
c.PrivateKeyID = *dec.PrivateKeyID
}
if dec.Sig != nil {
c.Sig = *dec.Sig
}
if dec.MinPow != nil {
c.MinPow = *dec.MinPow
}
if dec.Topics != nil {
c.Topics = dec.Topics
}
if dec.AllowP2P != nil {
c.AllowP2P = *dec.AllowP2P
}
return nil
}
whisper/whisperv6/gen_message_json.go deleted 100644 → 0
View file @ c5d28f0b
// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
package whisperv6
import (
"encoding/json"
"github.com/ethereum/go-ethereum/common/hexutil"
)
var _ = (*messageOverride)(nil)
// MarshalJSON marshals type Message to a json string
func (m Message) MarshalJSON() ([]byte, error) {
type Message struct {
Sig hexutil.Bytes `json:"sig,omitempty"`
TTL uint32 `json:"ttl"`
Timestamp uint32 `json:"timestamp"`
Topic TopicType `json:"topic"`
Payload hexutil.Bytes `json:"payload"`
Padding hexutil.Bytes `json:"padding"`
PoW float64 `json:"pow"`
Hash hexutil.Bytes `json:"hash"`
Dst hexutil.Bytes `json:"recipientPublicKey,omitempty"`
}
var enc Message
enc.Sig = m.Sig
enc.TTL = m.TTL
enc.Timestamp = m.Timestamp
enc.Topic = m.Topic
enc.Payload = m.Payload
enc.Padding = m.Padding
enc.PoW = m.PoW
enc.Hash = m.Hash
enc.Dst = m.Dst
return json.Marshal(&enc)
}
// UnmarshalJSON unmarshals type Message to a json string
func (m *Message) UnmarshalJSON(input []byte) error {
type Message struct {
Sig *hexutil.Bytes `json:"sig,omitempty"`
TTL *uint32 `json:"ttl"`
Timestamp *uint32 `json:"timestamp"`
Topic *TopicType `json:"topic"`
Payload *hexutil.Bytes `json:"payload"`
Padding *hexutil.Bytes `json:"padding"`
PoW *float64 `json:"pow"`
Hash *hexutil.Bytes `json:"hash"`
Dst *hexutil.Bytes `json:"recipientPublicKey,omitempty"`
}
var dec Message
if err := json.Unmarshal(input, &dec); err != nil {
return err
}
if dec.Sig != nil {
m.Sig = *dec.Sig
}
if dec.TTL != nil {
m.TTL = *dec.TTL
}
if dec.Timestamp != nil {
m.Timestamp = *dec.Timestamp
}
if dec.Topic != nil {
m.Topic = *dec.Topic
}
if dec.Payload != nil {
m.Payload = *dec.Payload
}
if dec.Padding != nil {
m.Padding = *dec.Padding
}
if dec.PoW != nil {
m.PoW = *dec.PoW
}
if dec.Hash != nil {
m.Hash = *dec.Hash
}
if dec.Dst != nil {
m.Dst = *dec.Dst
}
return nil
}
whisper/whisperv6/gen_newmessage_json.go deleted 100644 → 0
View file @ c5d28f0b
// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
package whisperv6
import (
"encoding/json"
"github.com/ethereum/go-ethereum/common/hexutil"
)
var _ = (*newMessageOverride)(nil)
// MarshalJSON marshals type NewMessage to a json string
func (n NewMessage) MarshalJSON() ([]byte, error) {
type NewMessage struct {
SymKeyID string `json:"symKeyID"`
PublicKey hexutil.Bytes `json:"pubKey"`
Sig string `json:"sig"`
TTL uint32 `json:"ttl"`
Topic TopicType `json:"topic"`
Payload hexutil.Bytes `json:"payload"`
Padding hexutil.Bytes `json:"padding"`
PowTime uint32 `json:"powTime"`
PowTarget float64 `json:"powTarget"`
TargetPeer string `json:"targetPeer"`
}
var enc NewMessage
enc.SymKeyID = n.SymKeyID
enc.PublicKey = n.PublicKey
enc.Sig = n.Sig
enc.TTL = n.TTL
enc.Topic = n.Topic
enc.Payload = n.Payload
enc.Padding = n.Padding
enc.PowTime = n.PowTime
enc.PowTarget = n.PowTarget
enc.TargetPeer = n.TargetPeer
return json.Marshal(&enc)
}
// UnmarshalJSON unmarshals type NewMessage to a json string
func (n *NewMessage) UnmarshalJSON(input []byte) error {
type NewMessage struct {
SymKeyID *string `json:"symKeyID"`
PublicKey *hexutil.Bytes `json:"pubKey"`
Sig *string `json:"sig"`
TTL *uint32 `json:"ttl"`
Topic *TopicType `json:"topic"`
Payload *hexutil.Bytes `json:"payload"`
Padding *hexutil.Bytes `json:"padding"`
PowTime *uint32 `json:"powTime"`
PowTarget *float64 `json:"powTarget"`
TargetPeer *string `json:"targetPeer"`
}
var dec NewMessage
if err := json.Unmarshal(input, &dec); err != nil {
return err
}
if dec.SymKeyID != nil {
n.SymKeyID = *dec.SymKeyID
}
if dec.PublicKey != nil {
n.PublicKey = *dec.PublicKey
}
if dec.Sig != nil {
n.Sig = *dec.Sig
}
if dec.TTL != nil {
n.TTL = *dec.TTL
}
if dec.Topic != nil {
n.Topic = *dec.Topic
}
if dec.Payload != nil {
n.Payload = *dec.Payload
}
if dec.Padding != nil {
n.Padding = *dec.Padding
}
if dec.PowTime != nil {
n.PowTime = *dec.PowTime
}
if dec.PowTarget != nil {
n.PowTarget = *dec.PowTarget
}
if dec.TargetPeer != nil {
n.TargetPeer = *dec.TargetPeer
}
return nil
}
whisper/whisperv6/message.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// Contains the Whisper protocol Message element.
package whisperv6
import (
"crypto/aes"
"crypto/cipher"
"crypto/ecdsa"
crand "crypto/rand"
"encoding/binary"
"errors"
mrand "math/rand"
"strconv"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/crypto/ecies"
"github.com/ethereum/go-ethereum/log"
)
// MessageParams specifies the exact way a message should be wrapped
// into an Envelope.
type MessageParams struct {
TTL uint32
Src *ecdsa.PrivateKey
Dst *ecdsa.PublicKey
KeySym []byte
Topic TopicType
WorkTime uint32
PoW float64
Payload []byte
Padding []byte
}
// SentMessage represents an end-user data packet to transmit through the
// Whisper protocol. These are wrapped into Envelopes that need not be
// understood by intermediate nodes, just forwarded.
type sentMessage struct {
Raw []byte
}
// ReceivedMessage represents a data packet to be received through the
// Whisper protocol and successfully decrypted.
type ReceivedMessage struct {
Raw []byte
Payload []byte
Padding []byte
Signature []byte
Salt []byte
PoW float64 // Proof of work as described in the Whisper spec
Sent uint32 // Time when the message was posted into the network
TTL uint32 // Maximum time to live allowed for the message
Src *ecdsa.PublicKey // Message recipient (identity used to decode the message)
Dst *ecdsa.PublicKey // Message recipient (identity used to decode the message)
Topic TopicType
SymKeyHash common.Hash // The Keccak256Hash of the key
EnvelopeHash common.Hash // Message envelope hash to act as a unique id
}
func isMessageSigned(flags byte) bool {
return (flags & signatureFlag) != 0
}
func (msg *ReceivedMessage) isSymmetricEncryption() bool {
return msg.SymKeyHash != common.Hash{}
}
func (msg *ReceivedMessage) isAsymmetricEncryption() bool {
return msg.Dst != nil
}
// NewSentMessage creates and initializes a non-signed, non-encrypted Whisper message.
func NewSentMessage(params *MessageParams) (*sentMessage, error) {
const payloadSizeFieldMaxSize = 4
msg := sentMessage{}
msg.Raw = make([]byte, 1,
flagsLength+payloadSizeFieldMaxSize+len(params.Payload)+len(params.Padding)+signatureLength+padSizeLimit)
msg.Raw[0] = 0 // set all the flags to zero
msg.addPayloadSizeField(params.Payload)
msg.Raw = append(msg.Raw, params.Payload...)
err := msg.appendPadding(params)
return &msg, err
}
// addPayloadSizeField appends the auxiliary field containing the size of payload
func (msg *sentMessage) addPayloadSizeField(payload []byte) {
fieldSize := getSizeOfPayloadSizeField(payload)
field := make([]byte, 4)
binary.LittleEndian.PutUint32(field, uint32(len(payload)))
field = field[:fieldSize]
msg.Raw = append(msg.Raw, field...)
msg.Raw[0] |= byte(fieldSize)
}
// getSizeOfPayloadSizeField returns the number of bytes necessary to encode the size of payload
func getSizeOfPayloadSizeField(payload []byte) int {
s := 1
for i := len(payload); i >= 256; i /= 256 {
s++
}
return s
}
// appendPadding appends the padding specified in params.
// If no padding is provided in params, then random padding is generated.
func (msg *sentMessage) appendPadding(params *MessageParams) error {
if len(params.Padding) != 0 {
// padding data was provided by the Dapp, just use it as is
msg.Raw = append(msg.Raw, params.Padding...)
return nil
}
rawSize := flagsLength + getSizeOfPayloadSizeField(params.Payload) + len(params.Payload)
if params.Src != nil {
rawSize += signatureLength
}
odd := rawSize % padSizeLimit
paddingSize := padSizeLimit - odd
pad := make([]byte, paddingSize)
_, err := crand.Read(pad)
if err != nil {
return err
}
if !validateDataIntegrity(pad, paddingSize) {
return errors.New("failed to generate random padding of size " + strconv.Itoa(paddingSize))
}
msg.Raw = append(msg.Raw, pad...)
return nil
}
// sign calculates and sets the cryptographic signature for the message,
// also setting the sign flag.
func (msg *sentMessage) sign(key *ecdsa.PrivateKey) error {
if isMessageSigned(msg.Raw[0]) {
// this should not happen, but no reason to panic
log.Error("failed to sign the message: already signed")
return nil
}
msg.Raw[0] |= signatureFlag // it is important to set this flag before signing
hash := crypto.Keccak256(msg.Raw)
signature, err := crypto.Sign(hash, key)
if err != nil {
msg.Raw[0] &= (0xFF ^ signatureFlag) // clear the flag
return err
}
msg.Raw = append(msg.Raw, signature...)
return nil
}
// encryptAsymmetric encrypts a message with a public key.
func (msg *sentMessage) encryptAsymmetric(key *ecdsa.PublicKey) error {
if !ValidatePublicKey(key) {
return errors.New("invalid public key provided for asymmetric encryption")
}
encrypted, err := ecies.Encrypt(crand.Reader, ecies.ImportECDSAPublic(key), msg.Raw, nil, nil)
if err == nil {
msg.Raw = encrypted
}
return err
}
// encryptSymmetric encrypts a message with a topic key, using AES-GCM-256.
// nonce size should be 12 bytes (see cipher.gcmStandardNonceSize).
func (msg *sentMessage) encryptSymmetric(key []byte) (err error) {
if !validateDataIntegrity(key, aesKeyLength) {
return errors.New("invalid key provided for symmetric encryption, size: " + strconv.Itoa(len(key)))
}
block, err := aes.NewCipher(key)
if err != nil {
return err
}
aesgcm, err := cipher.NewGCM(block)
if err != nil {
return err
}
salt, err := generateSecureRandomData(aesNonceLength) // never use more than 2^32 random nonces with a given key
if err != nil {
return err
}
encrypted := aesgcm.Seal(nil, salt, msg.Raw, nil)
msg.Raw = append(encrypted, salt...)
return nil
}
// generateSecureRandomData generates random data where extra security is required.
// The purpose of this function is to prevent some bugs in software or in hardware
// from delivering not-very-random data. This is especially useful for AES nonce,
// where true randomness does not really matter, but it is very important to have
// a unique nonce for every message.
func generateSecureRandomData(length int) ([]byte, error) {
x := make([]byte, length)
y := make([]byte, length)
res := make([]byte, length)
_, err := crand.Read(x)
if err != nil {
return nil, err
} else if !validateDataIntegrity(x, length) {
return nil, errors.New("crypto/rand failed to generate secure random data")
}
_, err = mrand.Read(y)
if err != nil {
return nil, err
} else if !validateDataIntegrity(y, length) {
return nil, errors.New("math/rand failed to generate secure random data")
}
for i := 0; i < length; i++ {
res[i] = x[i] ^ y[i]
}
if !validateDataIntegrity(res, length) {
return nil, errors.New("failed to generate secure random data")
}
return res, nil
}
// Wrap bundles the message into an Envelope to transmit over the network.
func (msg *sentMessage) Wrap(options *MessageParams) (envelope *Envelope, err error) {
if options.TTL == 0 {
options.TTL = DefaultTTL
}
if options.Src != nil {
if err = msg.sign(options.Src); err != nil {
return nil, err
}
}
if options.Dst != nil {
err = msg.encryptAsymmetric(options.Dst)
} else if options.KeySym != nil {
err = msg.encryptSymmetric(options.KeySym)
} else {
err = errors.New("unable to encrypt the message: neither symmetric nor assymmetric key provided")
}
if err != nil {
return nil, err
}
envelope = NewEnvelope(options.TTL, options.Topic, msg)
if err = envelope.Seal(options); err != nil {
return nil, err
}
return envelope, nil
}
// decryptSymmetric decrypts a message with a topic key, using AES-GCM-256.
// nonce size should be 12 bytes (see cipher.gcmStandardNonceSize).
func (msg *ReceivedMessage) decryptSymmetric(key []byte) error {
// symmetric messages are expected to contain the 12-byte nonce at the end of the payload
if len(msg.Raw) < aesNonceLength {
return errors.New("missing salt or invalid payload in symmetric message")
}
salt := msg.Raw[len(msg.Raw)-aesNonceLength:]
block, err := aes.NewCipher(key)
if err != nil {
return err
}
aesgcm, err := cipher.NewGCM(block)
if err != nil {
return err
}
decrypted, err := aesgcm.Open(nil, salt, msg.Raw[:len(msg.Raw)-aesNonceLength], nil)
if err != nil {
return err
}
msg.Raw = decrypted
msg.Salt = salt
return nil
}
// decryptAsymmetric decrypts an encrypted payload with a private key.
func (msg *ReceivedMessage) decryptAsymmetric(key *ecdsa.PrivateKey) error {
decrypted, err := ecies.ImportECDSA(key).Decrypt(msg.Raw, nil, nil)
if err == nil {
msg.Raw = decrypted
}
return err
}
// ValidateAndParse checks the message validity and extracts the fields in case of success.
func (msg *ReceivedMessage) ValidateAndParse() bool {
end := len(msg.Raw)
if end < 1 {
return false
}
if isMessageSigned(msg.Raw[0]) {
end -= signatureLength
if end <= 1 {
return false
}
msg.Signature = msg.Raw[end : end+signatureLength]
msg.Src = msg.SigToPubKey()
if msg.Src == nil {
return false
}
}
beg := 1
payloadSize := 0
sizeOfPayloadSizeField := int(msg.Raw[0] & SizeMask) // number of bytes indicating the size of payload
if sizeOfPayloadSizeField != 0 {
payloadSize = int(bytesToUintLittleEndian(msg.Raw[beg : beg+sizeOfPayloadSizeField]))
if payloadSize+1 > end {
return false
}
beg += sizeOfPayloadSizeField
msg.Payload = msg.Raw[beg : beg+payloadSize]
}
beg += payloadSize
msg.Padding = msg.Raw[beg:end]
return true
}
// SigToPubKey returns the public key associated to the message's
// signature.
func (msg *ReceivedMessage) SigToPubKey() *ecdsa.PublicKey {
defer func() { recover() }() // in case of invalid signature
pub, err := crypto.SigToPub(msg.hash(), msg.Signature)
if err != nil {
log.Error("failed to recover public key from signature", "err", err)
return nil
}
return pub
}
// hash calculates the SHA3 checksum of the message flags, payload size field, payload and padding.
func (msg *ReceivedMessage) hash() []byte {
if isMessageSigned(msg.Raw[0]) {
sz := len(msg.Raw) - signatureLength
return crypto.Keccak256(msg.Raw[:sz])
}
return crypto.Keccak256(msg.Raw)
}
whisper/whisperv6/message_test.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv6
import (
"bytes"
"crypto/aes"
"crypto/cipher"
mrand "math/rand"
"testing"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/rlp"
)
func generateMessageParams() (*MessageParams, error) {
// set all the parameters except p.Dst and p.Padding
buf := make([]byte, 4)
mrand.Read(buf)
sz := mrand.Intn(400)
var p MessageParams
p.PoW = 0.001
p.WorkTime = 1
p.TTL = uint32(mrand.Intn(1024))
p.Payload = make([]byte, sz)
p.KeySym = make([]byte, aesKeyLength)
mrand.Read(p.Payload)
mrand.Read(p.KeySym)
p.Topic = BytesToTopic(buf)
var err error
p.Src, err = crypto.GenerateKey()
if err != nil {
return nil, err
}
return &p, nil
}
func singleMessageTest(t *testing.T, symmetric bool) {
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
key, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("failed GenerateKey with seed %d: %s.", seed, err)
}
if !symmetric {
params.KeySym = nil
params.Dst = &key.PublicKey
}
text := make([]byte, 0, 512)
text = append(text, params.Payload...)
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
var decrypted *ReceivedMessage
if symmetric {
decrypted, err = env.OpenSymmetric(params.KeySym)
} else {
decrypted, err = env.OpenAsymmetric(key)
}
if err != nil {
t.Fatalf("failed to encrypt with seed %d: %s.", seed, err)
}
if !decrypted.ValidateAndParse() {
t.Fatalf("failed to validate with seed %d, symmetric = %v.", seed, symmetric)
}
if !bytes.Equal(text, decrypted.Payload) {
t.Fatalf("failed with seed %d: compare payload.", seed)
}
if !isMessageSigned(decrypted.Raw[0]) {
t.Fatalf("failed with seed %d: unsigned.", seed)
}
if len(decrypted.Signature) != signatureLength {
t.Fatalf("failed with seed %d: signature len %d.", seed, len(decrypted.Signature))
}
if !IsPubKeyEqual(decrypted.Src, &params.Src.PublicKey) {
t.Fatalf("failed with seed %d: signature mismatch.", seed)
}
}
func TestMessageEncryption(t *testing.T) {
InitSingleTest()
var symmetric bool
for i := 0; i < 256; i++ {
singleMessageTest(t, symmetric)
symmetric = !symmetric
}
}
func TestMessageWrap(t *testing.T) {
seed = int64(1777444222)
mrand.Seed(seed)
target := 128.0
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
params.TTL = 1
params.WorkTime = 12
params.PoW = target
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
pow := env.PoW()
if pow < target {
t.Fatalf("failed Wrap with seed %d: pow < target (%f vs. %f).", seed, pow, target)
}
// set PoW target too high, expect error
msg2, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
params.TTL = 1000000
params.WorkTime = 1
params.PoW = 10000000.0
_, err = msg2.Wrap(params)
if err == nil {
t.Fatalf("unexpectedly reached the PoW target with seed %d.", seed)
}
}
func TestMessageSeal(t *testing.T) {
// this test depends on deterministic choice of seed (1976726903)
seed = int64(1976726903)
mrand.Seed(seed)
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
params.TTL = 1
env := NewEnvelope(params.TTL, params.Topic, msg)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
env.Expiry = uint32(seed) // make it deterministic
target := 32.0
params.WorkTime = 4
params.PoW = target
env.Seal(params)
env.calculatePoW(0)
pow := env.PoW()
if pow < target {
t.Fatalf("failed Wrap with seed %d: pow < target (%f vs. %f).", seed, pow, target)
}
params.WorkTime = 1
params.PoW = 1000000000.0
env.Seal(params)
env.calculatePoW(0)
pow = env.PoW()
if pow < 2*target {
t.Fatalf("failed Wrap with seed %d: pow too small %f.", seed, pow)
}
}
func TestEnvelopeOpen(t *testing.T) {
InitSingleTest()
var symmetric bool
for i := 0; i < 32; i++ {
singleEnvelopeOpenTest(t, symmetric)
symmetric = !symmetric
}
}
func singleEnvelopeOpenTest(t *testing.T, symmetric bool) {
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
key, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("failed GenerateKey with seed %d: %s.", seed, err)
}
if !symmetric {
params.KeySym = nil
params.Dst = &key.PublicKey
}
text := make([]byte, 0, 512)
text = append(text, params.Payload...)
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
var f Filter
if symmetric {
f = Filter{KeySym: params.KeySym}
} else {
f = Filter{KeyAsym: key}
}
decrypted := env.Open(&f)
if decrypted == nil {
t.Fatalf("failed to open with seed %d.", seed)
}
if !bytes.Equal(text, decrypted.Payload) {
t.Fatalf("failed with seed %d: compare payload.", seed)
}
if !isMessageSigned(decrypted.Raw[0]) {
t.Fatalf("failed with seed %d: unsigned.", seed)
}
if len(decrypted.Signature) != signatureLength {
t.Fatalf("failed with seed %d: signature len %d.", seed, len(decrypted.Signature))
}
if !IsPubKeyEqual(decrypted.Src, &params.Src.PublicKey) {
t.Fatalf("failed with seed %d: signature mismatch.", seed)
}
if decrypted.isAsymmetricEncryption() == symmetric {
t.Fatalf("failed with seed %d: asymmetric %v vs. %v.", seed, decrypted.isAsymmetricEncryption(), symmetric)
}
if decrypted.isSymmetricEncryption() != symmetric {
t.Fatalf("failed with seed %d: symmetric %v vs. %v.", seed, decrypted.isSymmetricEncryption(), symmetric)
}
if !symmetric {
if decrypted.Dst == nil {
t.Fatalf("failed with seed %d: dst is nil.", seed)
}
if !IsPubKeyEqual(decrypted.Dst, &key.PublicKey) {
t.Fatalf("failed with seed %d: Dst.", seed)
}
}
}
func TestEncryptWithZeroKey(t *testing.T) {
InitSingleTest()
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
params.KeySym = make([]byte, aesKeyLength)
_, err = msg.Wrap(params)
if err == nil {
t.Fatalf("wrapped with zero key, seed: %d.", seed)
}
params, err = generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
msg, err = NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
params.KeySym = make([]byte, 0)
_, err = msg.Wrap(params)
if err == nil {
t.Fatalf("wrapped with empty key, seed: %d.", seed)
}
params, err = generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
msg, err = NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
params.KeySym = nil
_, err = msg.Wrap(params)
if err == nil {
t.Fatalf("wrapped with nil key, seed: %d.", seed)
}
}
func TestRlpEncode(t *testing.T) {
InitSingleTest()
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("wrapped with zero key, seed: %d.", seed)
}
raw, err := rlp.EncodeToBytes(env)
if err != nil {
t.Fatalf("RLP encode failed: %s.", err)
}
var decoded Envelope
rlp.DecodeBytes(raw, &decoded)
if err != nil {
t.Fatalf("RLP decode failed: %s.", err)
}
he := env.Hash()
hd := decoded.Hash()
if he != hd {
t.Fatalf("Hashes are not equal: %x vs. %x", he, hd)
}
}
func singlePaddingTest(t *testing.T, padSize int) {
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d and sz=%d: %s.", seed, padSize, err)
}
params.Padding = make([]byte, padSize)
params.PoW = 0.0000000001
pad := make([]byte, padSize)
_, err = mrand.Read(pad)
if err != nil {
t.Fatalf("padding is not generated (seed %d): %s", seed, err)
}
n := copy(params.Padding, pad)
if n != padSize {
t.Fatalf("padding is not copied (seed %d): %s", seed, err)
}
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("failed to wrap, seed: %d and sz=%d.", seed, padSize)
}
f := Filter{KeySym: params.KeySym}
decrypted := env.Open(&f)
if decrypted == nil {
t.Fatalf("failed to open, seed and sz=%d: %d.", seed, padSize)
}
if !bytes.Equal(pad, decrypted.Padding) {
t.Fatalf("padding is not retireved as expected with seed %d and sz=%d:\n[%x]\n[%x].", seed, padSize, pad, decrypted.Padding)
}
}
func TestPadding(t *testing.T) {
InitSingleTest()
for i := 1; i < 260; i++ {
singlePaddingTest(t, i)
}
lim := 256 * 256
for i := lim - 5; i < lim+2; i++ {
singlePaddingTest(t, i)
}
for i := 0; i < 256; i++ {
n := mrand.Intn(256*254) + 256
singlePaddingTest(t, n)
}
for i := 0; i < 256; i++ {
n := mrand.Intn(256*1024) + 256*256
singlePaddingTest(t, n)
}
}
func TestPaddingAppendedToSymMessagesWithSignature(t *testing.T) {
params := &MessageParams{
Payload: make([]byte, 246),
KeySym: make([]byte, aesKeyLength),
}
pSrc, err := crypto.GenerateKey()
if err != nil {
t.Fatalf("Error creating the signature key %v", err)
return
}
params.Src = pSrc
// Simulate a message with a payload just under 256 so that
// payload + flag + signature > 256. Check that the result
// is padded on the next 256 boundary.
msg := sentMessage{}
const payloadSizeFieldMinSize = 1
msg.Raw = make([]byte, flagsLength+payloadSizeFieldMinSize+len(params.Payload))
err = msg.appendPadding(params)
if err != nil {
t.Fatalf("Error appending padding to message %v", err)
return
}
if len(msg.Raw) != 512-signatureLength {
t.Errorf("Invalid size %d != 512", len(msg.Raw))
}
}
func TestAesNonce(t *testing.T) {
key := hexutil.MustDecode("0x03ca634cae0d49acb401d8a4c6b6fe8c55b70d115bf400769cc1400f3258cd31")
block, err := aes.NewCipher(key)
if err != nil {
t.Fatalf("NewCipher failed: %s", err)
}
aesgcm, err := cipher.NewGCM(block)
if err != nil {
t.Fatalf("NewGCM failed: %s", err)
}
// This is the most important single test in this package.
// If it fails, whisper will not be working.
if aesgcm.NonceSize() != aesNonceLength {
t.Fatalf("Nonce size is wrong. This is a critical error. Apparently AES nonce size have changed in the new version of AES GCM package. Whisper will not be working until this problem is resolved.")
}
}
whisper/whisperv6/peer.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv6
import (
"fmt"
"math"
"sync"
"time"
mapset "github.com/deckarep/golang-set"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/rlp"
)
// Peer represents a whisper protocol peer connection.
type Peer struct {
host *Whisper
peer *p2p.Peer
ws p2p.MsgReadWriter
trusted bool
powRequirement float64
bloomMu sync.Mutex
bloomFilter []byte
fullNode bool
known mapset.Set // Messages already known by the peer to avoid wasting bandwidth
quit chan struct{}
wg sync.WaitGroup
}
// newPeer creates a new whisper peer object, but does not run the handshake itself.
func newPeer(host *Whisper, remote *p2p.Peer, rw p2p.MsgReadWriter) *Peer {
return &Peer{
host: host,
peer: remote,
ws: rw,
trusted: false,
powRequirement: 0.0,
known: mapset.NewSet(),
quit: make(chan struct{}),
bloomFilter: MakeFullNodeBloom(),
fullNode: true,
}
}
// start initiates the peer updater, periodically broadcasting the whisper packets
// into the network.
func (peer *Peer) start() {
peer.wg.Add(1)
go peer.update()
log.Trace("start", "peer", peer.ID())
}
// stop terminates the peer updater, stopping message forwarding to it.
func (peer *Peer) stop() {
close(peer.quit)
peer.wg.Wait()
log.Trace("stop", "peer", peer.ID())
}
// handshake sends the protocol initiation status message to the remote peer and
// verifies the remote status too.
func (peer *Peer) handshake() error {
// Send the handshake status message asynchronously
errc := make(chan error, 1)
isLightNode := peer.host.LightClientMode()
isRestrictedLightNodeConnection := peer.host.LightClientModeConnectionRestricted()
peer.wg.Add(1)
go func() {
defer peer.wg.Done()
pow := peer.host.MinPow()
powConverted := math.Float64bits(pow)
bloom := peer.host.BloomFilter()
errc <- p2p.SendItems(peer.ws, statusCode, ProtocolVersion, powConverted, bloom, isLightNode)
}()
// Fetch the remote status packet and verify protocol match
packet, err := peer.ws.ReadMsg()
if err != nil {
return err
}
if packet.Code != statusCode {
return fmt.Errorf("peer [%x] sent packet %x before status packet", peer.ID(), packet.Code)
}
s := rlp.NewStream(packet.Payload, uint64(packet.Size))
_, err = s.List()
if err != nil {
return fmt.Errorf("peer [%x] sent bad status message: %v", peer.ID(), err)
}
peerVersion, err := s.Uint()
if err != nil {
return fmt.Errorf("peer [%x] sent bad status message (unable to decode version): %v", peer.ID(), err)
}
if peerVersion != ProtocolVersion {
return fmt.Errorf("peer [%x]: protocol version mismatch %d != %d", peer.ID(), peerVersion, ProtocolVersion)
}
// only version is mandatory, subsequent parameters are optional
powRaw, err := s.Uint()
if err == nil {
pow := math.Float64frombits(powRaw)
if math.IsInf(pow, 0) || math.IsNaN(pow) || pow < 0.0 {
return fmt.Errorf("peer [%x] sent bad status message: invalid pow", peer.ID())
}
peer.powRequirement = pow
var bloom []byte
err = s.Decode(&bloom)
if err == nil {
sz := len(bloom)
if sz != BloomFilterSize && sz != 0 {
return fmt.Errorf("peer [%x] sent bad status message: wrong bloom filter size %d", peer.ID(), sz)
}
peer.setBloomFilter(bloom)
}
}
isRemotePeerLightNode, _ := s.Bool()
if isRemotePeerLightNode && isLightNode && isRestrictedLightNodeConnection {
return fmt.Errorf("peer [%x] is useless: two light client communication restricted", peer.ID())
}
if err := <-errc; err != nil {
return fmt.Errorf("peer [%x] failed to send status packet: %v", peer.ID(), err)
}
return nil
}
// update executes periodic operations on the peer, including message transmission
// and expiration.
func (peer *Peer) update() {
defer peer.wg.Done()
// Start the tickers for the updates
expire := time.NewTicker(expirationCycle)
defer expire.Stop()
transmit := time.NewTicker(transmissionCycle)
defer transmit.Stop()
// Loop and transmit until termination is requested
for {
select {
case <-expire.C:
peer.expire()
case <-transmit.C:
if err := peer.broadcast(); err != nil {
log.Trace("broadcast failed", "reason", err, "peer", peer.ID())
return
}
case <-peer.quit:
return
}
}
}
// mark marks an envelope known to the peer so that it won't be sent back.
func (peer *Peer) mark(envelope *Envelope) {
peer.known.Add(envelope.Hash())
}
// marked checks if an envelope is already known to the remote peer.
func (peer *Peer) marked(envelope *Envelope) bool {
return peer.known.Contains(envelope.Hash())
}
// expire iterates over all the known envelopes in the host and removes all
// expired (unknown) ones from the known list.
func (peer *Peer) expire() {
unmark := make(map[common.Hash]struct{})
peer.known.Each(func(v interface{}) bool {
if !peer.host.isEnvelopeCached(v.(common.Hash)) {
unmark[v.(common.Hash)] = struct{}{}
}
return true
})
// Dump all known but no longer cached
for hash := range unmark {
peer.known.Remove(hash)
}
}
// broadcast iterates over the collection of envelopes and transmits yet unknown
// ones over the network.
func (peer *Peer) broadcast() error {
envelopes := peer.host.Envelopes()
bundle := make([]*Envelope, 0, len(envelopes))
for _, envelope := range envelopes {
if !peer.marked(envelope) && envelope.PoW() >= peer.powRequirement && peer.bloomMatch(envelope) {
bundle = append(bundle, envelope)
}
}
if len(bundle) > 0 {
// transmit the batch of envelopes
if err := p2p.Send(peer.ws, messagesCode, bundle); err != nil {
return err
}
// mark envelopes only if they were successfully sent
for _, e := range bundle {
peer.mark(e)
}
log.Trace("broadcast", "num. messages", len(bundle))
}
return nil
}
// ID returns a peer's id
func (peer *Peer) ID() []byte {
id := peer.peer.ID()
return id[:]
}
func (peer *Peer) notifyAboutPowRequirementChange(pow float64) error {
i := math.Float64bits(pow)
return p2p.Send(peer.ws, powRequirementCode, i)
}
func (peer *Peer) notifyAboutBloomFilterChange(bloom []byte) error {
return p2p.Send(peer.ws, bloomFilterExCode, bloom)
}
func (peer *Peer) bloomMatch(env *Envelope) bool {
peer.bloomMu.Lock()
defer peer.bloomMu.Unlock()
return peer.fullNode || BloomFilterMatch(peer.bloomFilter, env.Bloom())
}
func (peer *Peer) setBloomFilter(bloom []byte) {
peer.bloomMu.Lock()
defer peer.bloomMu.Unlock()
peer.bloomFilter = bloom
peer.fullNode = isFullNode(bloom)
if peer.fullNode && peer.bloomFilter == nil {
peer.bloomFilter = MakeFullNodeBloom()
}
}
func MakeFullNodeBloom() []byte {
bloom := make([]byte, BloomFilterSize)
for i := 0; i < BloomFilterSize; i++ {
bloom[i] = 0xFF
}
return bloom
}
whisper/whisperv6/topic.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// Contains the Whisper protocol Topic element.
package whisperv6
import (
"github.com/ethereum/go-ethereum/common/hexutil"
)
// TopicType represents a cryptographically secure, probabilistic partial
// classifications of a message, determined as the first (left) 4 bytes of the
// SHA3 hash of some arbitrary data given by the original author of the message.
type TopicType [TopicLength]byte
// BytesToTopic converts from the byte array representation of a topic
// into the TopicType type.
func BytesToTopic(b []byte) (t TopicType) {
sz := TopicLength
if x := len(b); x < TopicLength {
sz = x
}
for i := 0; i < sz; i++ {
t[i] = b[i]
}
return t
}
// String converts a topic byte array to a string representation.
func (t *TopicType) String() string {
return hexutil.Encode(t[:])
}
// MarshalText returns the hex representation of t.
func (t TopicType) MarshalText() ([]byte, error) {
return hexutil.Bytes(t[:]).MarshalText()
}
// UnmarshalText parses a hex representation to a topic.
func (t *TopicType) UnmarshalText(input []byte) error {
return hexutil.UnmarshalFixedText("Topic", input, t[:])
}
whisper/whisperv6/topic_test.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv6
import (
"encoding/json"
"testing"
)
var topicStringTests = []struct {
topic TopicType
str string
}{
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, str: "0x00000000"},
{topic: TopicType{0x00, 0x7f, 0x80, 0xff}, str: "0x007f80ff"},
{topic: TopicType{0xff, 0x80, 0x7f, 0x00}, str: "0xff807f00"},
{topic: TopicType{0xf2, 0x6e, 0x77, 0x79}, str: "0xf26e7779"},
}
func TestTopicString(t *testing.T) {
for i, tst := range topicStringTests {
s := tst.topic.String()
if s != tst.str {
t.Fatalf("failed test %d: have %s, want %s.", i, s, tst.str)
}
}
}
var bytesToTopicTests = []struct {
data []byte
topic TopicType
}{
{topic: TopicType{0x8f, 0x9a, 0x2b, 0x7d}, data: []byte{0x8f, 0x9a, 0x2b, 0x7d}},
{topic: TopicType{0x00, 0x7f, 0x80, 0xff}, data: []byte{0x00, 0x7f, 0x80, 0xff}},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte{0x00, 0x00, 0x00, 0x00}},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte{0x00, 0x00, 0x00}},
{topic: TopicType{0x01, 0x00, 0x00, 0x00}, data: []byte{0x01}},
{topic: TopicType{0x00, 0xfe, 0x00, 0x00}, data: []byte{0x00, 0xfe}},
{topic: TopicType{0xea, 0x1d, 0x43, 0x00}, data: []byte{0xea, 0x1d, 0x43}},
{topic: TopicType{0x6f, 0x3c, 0xb0, 0xdd}, data: []byte{0x6f, 0x3c, 0xb0, 0xdd, 0x0f, 0x00, 0x90}},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte{}},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: nil},
}
var unmarshalTestsGood = []struct {
topic TopicType
data []byte
}{
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0x00000000"`)},
{topic: TopicType{0x00, 0x7f, 0x80, 0xff}, data: []byte(`"0x007f80ff"`)},
{topic: TopicType{0xff, 0x80, 0x7f, 0x00}, data: []byte(`"0xff807f00"`)},
{topic: TopicType{0xf2, 0x6e, 0x77, 0x79}, data: []byte(`"0xf26e7779"`)},
}
var unmarshalTestsBad = []struct {
topic TopicType
data []byte
}{
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0x000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0x0000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0x000000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0x0000000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"000000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0000000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"abcdefg0"`)},
}
var unmarshalTestsUgly = []struct {
topic TopicType
data []byte
}{
{topic: TopicType{0x01, 0x00, 0x00, 0x00}, data: []byte(`"0x00000001"`)},
}
func TestBytesToTopic(t *testing.T) {
for i, tst := range bytesToTopicTests {
top := BytesToTopic(tst.data)
if top != tst.topic {
t.Fatalf("failed test %d: have %v, want %v.", i, t, tst.topic)
}
}
}
func TestUnmarshalTestsGood(t *testing.T) {
for i, tst := range unmarshalTestsGood {
var top TopicType
err := json.Unmarshal(tst.data, &top)
if err != nil {
t.Errorf("failed test %d. input: %v. err: %v", i, tst.data, err)
} else if top != tst.topic {
t.Errorf("failed test %d: have %v, want %v.", i, t, tst.topic)
}
}
}
func TestUnmarshalTestsBad(t *testing.T) {
// in this test UnmarshalJSON() is supposed to fail
for i, tst := range unmarshalTestsBad {
var top TopicType
err := json.Unmarshal(tst.data, &top)
if err == nil {
t.Fatalf("failed test %d. input: %v.", i, tst.data)
}
}
}
func TestUnmarshalTestsUgly(t *testing.T) {
// in this test UnmarshalJSON() is NOT supposed to fail, but result should be wrong
for i, tst := range unmarshalTestsUgly {
var top TopicType
err := json.Unmarshal(tst.data, &top)
if err != nil {
t.Errorf("failed test %d. input: %v.", i, tst.data)
} else if top == tst.topic {
t.Errorf("failed test %d: have %v, want %v.", i, top, tst.topic)
}
}
}
whisper/whisperv6/whisper.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv6
import (
"bytes"
"crypto/ecdsa"
"crypto/sha256"
"fmt"
"math"
"runtime"
"sync"
"time"
mapset "github.com/deckarep/golang-set"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/rpc"
"github.com/syndtr/goleveldb/leveldb/errors"
"golang.org/x/crypto/pbkdf2"
"golang.org/x/sync/syncmap"
)
// Statistics holds several message-related counter for analytics
// purposes.
type Statistics struct {
messagesCleared int
memoryCleared int
memoryUsed int
cycles int
totalMessagesCleared int
}
const (
maxMsgSizeIdx = iota // Maximal message length allowed by the whisper node
overflowIdx // Indicator of message queue overflow
minPowIdx // Minimal PoW required by the whisper node
minPowToleranceIdx // Minimal PoW tolerated by the whisper node for a limited time
bloomFilterIdx // Bloom filter for topics of interest for this node
bloomFilterToleranceIdx // Bloom filter tolerated by the whisper node for a limited time
lightClientModeIdx // Light client mode. (does not forward any messages)
restrictConnectionBetweenLightClientsIdx // Restrict connection between two light clients
)
// Whisper represents a dark communication interface through the Ethereum
// network, using its very own P2P communication layer.
type Whisper struct {
protocol p2p.Protocol // Protocol description and parameters
filters *Filters // Message filters installed with Subscribe function
privateKeys map[string]*ecdsa.PrivateKey // Private key storage
symKeys map[string][]byte // Symmetric key storage
keyMu sync.RWMutex // Mutex associated with key storages
poolMu sync.RWMutex // Mutex to sync the message and expiration pools
envelopes map[common.Hash]*Envelope // Pool of envelopes currently tracked by this node
expirations map[uint32]mapset.Set // Message expiration pool
peerMu sync.RWMutex // Mutex to sync the active peer set
peers map[*Peer]struct{} // Set of currently active peers
messageQueue chan *Envelope // Message queue for normal whisper messages
p2pMsgQueue chan *Envelope // Message queue for peer-to-peer messages (not to be forwarded any further)
quit chan struct{} // Channel used for graceful exit
settings syncmap.Map // holds configuration settings that can be dynamically changed
syncAllowance int // maximum time in seconds allowed to process the whisper-related messages
statsMu sync.Mutex // guard stats
stats Statistics // Statistics of whisper node
mailServer MailServer // MailServer interface
wg sync.WaitGroup
}
// New creates a Whisper client ready to communicate through the Ethereum P2P network.
func New(stack *node.Node, cfg *Config) (*Whisper, error) {
if cfg == nil {
cfg = &DefaultConfig
}
whisper := &Whisper{
privateKeys: make(map[string]*ecdsa.PrivateKey),
symKeys: make(map[string][]byte),
envelopes: make(map[common.Hash]*Envelope),
expirations: make(map[uint32]mapset.Set),
peers: make(map[*Peer]struct{}),
messageQueue: make(chan *Envelope, messageQueueLimit),
p2pMsgQueue: make(chan *Envelope, messageQueueLimit),
quit: make(chan struct{}),
syncAllowance: DefaultSyncAllowance,
}
whisper.filters = NewFilters(whisper)
whisper.settings.Store(minPowIdx, cfg.MinimumAcceptedPOW)
whisper.settings.Store(maxMsgSizeIdx, cfg.MaxMessageSize)
whisper.settings.Store(overflowIdx, false)
whisper.settings.Store(restrictConnectionBetweenLightClientsIdx, cfg.RestrictConnectionBetweenLightClients)
// p2p whisper sub protocol handler
whisper.protocol = p2p.Protocol{
Name: ProtocolName,
Version: uint(ProtocolVersion),
Length: NumberOfMessageCodes,
Run: whisper.HandlePeer,
NodeInfo: func() interface{} {
return map[string]interface{}{
"version": ProtocolVersionStr,
"maxMessageSize": whisper.MaxMessageSize(),
"minimumPoW": whisper.MinPow(),
}
},
}
stack.RegisterAPIs(whisper.APIs())
stack.RegisterProtocols(whisper.Protocols())
stack.RegisterLifecycle(whisper)
return whisper, nil
}
// MinPow returns the PoW value required by this node.
func (whisper *Whisper) MinPow() float64 {
val, exist := whisper.settings.Load(minPowIdx)
if !exist || val == nil {
return DefaultMinimumPoW
}
v, ok := val.(float64)
if !ok {
log.Error("Error loading minPowIdx, using default")
return DefaultMinimumPoW
}
return v
}
// MinPowTolerance returns the value of minimum PoW which is tolerated for a limited
// time after PoW was changed. If sufficient time have elapsed or no change of PoW
// have ever occurred, the return value will be the same as return value of MinPow().
func (whisper *Whisper) MinPowTolerance() float64 {
val, exist := whisper.settings.Load(minPowToleranceIdx)
if !exist || val == nil {
return DefaultMinimumPoW
}
return val.(float64)
}
// BloomFilter returns the aggregated bloom filter for all the topics of interest.
// The nodes are required to send only messages that match the advertised bloom filter.
// If a message does not match the bloom, it will tantamount to spam, and the peer will
// be disconnected.
func (whisper *Whisper) BloomFilter() []byte {
val, exist := whisper.settings.Load(bloomFilterIdx)
if !exist || val == nil {
return nil
}
return val.([]byte)
}
// BloomFilterTolerance returns the bloom filter which is tolerated for a limited
// time after new bloom was advertised to the peers. If sufficient time have elapsed
// or no change of bloom filter have ever occurred, the return value will be the same
// as return value of BloomFilter().
func (whisper *Whisper) BloomFilterTolerance() []byte {
val, exist := whisper.settings.Load(bloomFilterToleranceIdx)
if !exist || val == nil {
return nil
}
return val.([]byte)
}
// MaxMessageSize returns the maximum accepted message size.
func (whisper *Whisper) MaxMessageSize() uint32 {
val, _ := whisper.settings.Load(maxMsgSizeIdx)
return val.(uint32)
}
// Overflow returns an indication if the message queue is full.
func (whisper *Whisper) Overflow() bool {
val, _ := whisper.settings.Load(overflowIdx)
return val.(bool)
}
// APIs returns the RPC descriptors the Whisper implementation offers
func (whisper *Whisper) APIs() []rpc.API {
return []rpc.API{
{
Namespace: ProtocolName,
Version: ProtocolVersionStr,
Service: NewPublicWhisperAPI(whisper),
Public: true,
},
}
}
// RegisterServer registers MailServer interface.
// MailServer will process all the incoming messages with p2pRequestCode.
func (whisper *Whisper) RegisterServer(server MailServer) {
whisper.mailServer = server
}
// Protocols returns the whisper sub-protocols ran by this particular client.
func (whisper *Whisper) Protocols() []p2p.Protocol {
return []p2p.Protocol{whisper.protocol}
}
// Version returns the whisper sub-protocols version number.
func (whisper *Whisper) Version() uint {
return whisper.protocol.Version
}
// SetMaxMessageSize sets the maximal message size allowed by this node
func (whisper *Whisper) SetMaxMessageSize(size uint32) error {
if size > MaxMessageSize {
return fmt.Errorf("message size too large [%d>%d]", size, MaxMessageSize)
}
whisper.settings.Store(maxMsgSizeIdx, size)
return nil
}
// SetBloomFilter sets the new bloom filter
func (whisper *Whisper) SetBloomFilter(bloom []byte) error {
if len(bloom) != BloomFilterSize {
return fmt.Errorf("invalid bloom filter size: %d", len(bloom))
}
b := make([]byte, BloomFilterSize)
copy(b, bloom)
whisper.settings.Store(bloomFilterIdx, b)
whisper.notifyPeersAboutBloomFilterChange(b)
whisper.wg.Add(1)
go func() {
// allow some time before all the peers have processed the notification
defer whisper.wg.Done()
ticker := time.NewTicker(time.Duration(whisper.syncAllowance) * time.Second)
defer ticker.Stop()
<-ticker.C
whisper.settings.Store(bloomFilterToleranceIdx, b)
}()
return nil
}
// SetMinimumPoW sets the minimal PoW required by this node
func (whisper *Whisper) SetMinimumPoW(val float64) error {
if val < 0.0 {
return fmt.Errorf("invalid PoW: %f", val)
}
whisper.settings.Store(minPowIdx, val)
whisper.notifyPeersAboutPowRequirementChange(val)
whisper.wg.Add(1)
go func() {
defer whisper.wg.Done()
// allow some time before all the peers have processed the notification
ticker := time.NewTicker(time.Duration(whisper.syncAllowance) * time.Second)
defer ticker.Stop()
<-ticker.C
whisper.settings.Store(minPowToleranceIdx, val)
}()
return nil
}
// SetMinimumPowTest sets the minimal PoW in test environment
func (whisper *Whisper) SetMinimumPowTest(val float64) {
whisper.settings.Store(minPowIdx, val)
whisper.notifyPeersAboutPowRequirementChange(val)
whisper.settings.Store(minPowToleranceIdx, val)
}
//SetLightClientMode makes node light client (does not forward any messages)
func (whisper *Whisper) SetLightClientMode(v bool) {
whisper.settings.Store(lightClientModeIdx, v)
}
//LightClientMode indicates is this node is light client (does not forward any messages)
func (whisper *Whisper) LightClientMode() bool {
val, exist := whisper.settings.Load(lightClientModeIdx)
if !exist || val == nil {
return false
}
v, ok := val.(bool)
return v && ok
}
//LightClientModeConnectionRestricted indicates that connection to light client in light client mode not allowed
func (whisper *Whisper) LightClientModeConnectionRestricted() bool {
val, exist := whisper.settings.Load(restrictConnectionBetweenLightClientsIdx)
if !exist || val == nil {
return false
}
v, ok := val.(bool)
return v && ok
}
func (whisper *Whisper) notifyPeersAboutPowRequirementChange(pow float64) {
arr := whisper.getPeers()
for _, p := range arr {
err := p.notifyAboutPowRequirementChange(pow)
if err != nil {
// allow one retry
err = p.notifyAboutPowRequirementChange(pow)
}
if err != nil {
log.Warn("failed to notify peer about new pow requirement", "peer", p.ID(), "error", err)
}
}
}
func (whisper *Whisper) notifyPeersAboutBloomFilterChange(bloom []byte) {
arr := whisper.getPeers()
for _, p := range arr {
err := p.notifyAboutBloomFilterChange(bloom)
if err != nil {
// allow one retry
err = p.notifyAboutBloomFilterChange(bloom)
}
if err != nil {
log.Warn("failed to notify peer about new bloom filter", "peer", p.ID(), "error", err)
}
}
}
func (whisper *Whisper) getPeers() []*Peer {
arr := make([]*Peer, len(whisper.peers))
i := 0
whisper.peerMu.Lock()
defer whisper.peerMu.Unlock()
for p := range whisper.peers {
arr[i] = p
i++
}
return arr
}
// getPeer retrieves peer by ID
func (whisper *Whisper) getPeer(peerID []byte) (*Peer, error) {
whisper.peerMu.Lock()
defer whisper.peerMu.Unlock()
for p := range whisper.peers {
id := p.peer.ID()
if bytes.Equal(peerID, id[:]) {
return p, nil
}
}
return nil, fmt.Errorf("could not find peer with ID: %x", peerID)
}
// AllowP2PMessagesFromPeer marks specific peer trusted,
// which will allow it to send historic (expired) messages.
func (whisper *Whisper) AllowP2PMessagesFromPeer(peerID []byte) error {
p, err := whisper.getPeer(peerID)
if err != nil {
return err
}
p.trusted = true
return nil
}
// RequestHistoricMessages sends a message with p2pRequestCode to a specific peer,
// which is known to implement MailServer interface, and is supposed to process this
// request and respond with a number of peer-to-peer messages (possibly expired),
// which are not supposed to be forwarded any further.
// The whisper protocol is agnostic of the format and contents of envelope.
func (whisper *Whisper) RequestHistoricMessages(peerID []byte, envelope *Envelope) error {
p, err := whisper.getPeer(peerID)
if err != nil {
return err
}
p.trusted = true
return p2p.Send(p.ws, p2pRequestCode, envelope)
}
// SendP2PMessage sends a peer-to-peer message to a specific peer.
func (whisper *Whisper) SendP2PMessage(peerID []byte, envelope *Envelope) error {
p, err := whisper.getPeer(peerID)
if err != nil {
return err
}
return whisper.SendP2PDirect(p, envelope)
}
// SendP2PDirect sends a peer-to-peer message to a specific peer.
func (whisper *Whisper) SendP2PDirect(peer *Peer, envelope *Envelope) error {
return p2p.Send(peer.ws, p2pMessageCode, envelope)
}
// NewKeyPair generates a new cryptographic identity for the client, and injects
// it into the known identities for message decryption. Returns ID of the new key pair.
func (whisper *Whisper) NewKeyPair() (string, error) {
key, err := crypto.GenerateKey()
if err != nil || !validatePrivateKey(key) {
key, err = crypto.GenerateKey() // retry once
}
if err != nil {
return "", err
}
if !validatePrivateKey(key) {
return "", fmt.Errorf("failed to generate valid key")
}
id, err := GenerateRandomID()
if err != nil {
return "", fmt.Errorf("failed to generate ID: %s", err)
}
whisper.keyMu.Lock()
defer whisper.keyMu.Unlock()
if whisper.privateKeys[id] != nil {
return "", fmt.Errorf("failed to generate unique ID")
}
whisper.privateKeys[id] = key
return id, nil
}
// DeleteKeyPair deletes the specified key if it exists.
func (whisper *Whisper) DeleteKeyPair(key string) bool {
whisper.keyMu.Lock()
defer whisper.keyMu.Unlock()
if whisper.privateKeys[key] != nil {
delete(whisper.privateKeys, key)
return true
}
return false
}
// AddKeyPair imports a asymmetric private key and returns it identifier.
func (whisper *Whisper) AddKeyPair(key *ecdsa.PrivateKey) (string, error) {
id, err := GenerateRandomID()
if err != nil {
return "", fmt.Errorf("failed to generate ID: %s", err)
}
whisper.keyMu.Lock()
whisper.privateKeys[id] = key
whisper.keyMu.Unlock()
return id, nil
}
// HasKeyPair checks if the whisper node is configured with the private key
// of the specified public pair.
func (whisper *Whisper) HasKeyPair(id string) bool {
whisper.keyMu.RLock()
defer whisper.keyMu.RUnlock()
return whisper.privateKeys[id] != nil
}
// GetPrivateKey retrieves the private key of the specified identity.
func (whisper *Whisper) GetPrivateKey(id string) (*ecdsa.PrivateKey, error) {
whisper.keyMu.RLock()
defer whisper.keyMu.RUnlock()
key := whisper.privateKeys[id]
if key == nil {
return nil, fmt.Errorf("invalid id")
}
return key, nil
}
// GenerateSymKey generates a random symmetric key and stores it under id,
// which is then returned. Will be used in the future for session key exchange.
func (whisper *Whisper) GenerateSymKey() (string, error) {
key, err := generateSecureRandomData(aesKeyLength)
if err != nil {
return "", err
} else if !validateDataIntegrity(key, aesKeyLength) {
return "", fmt.Errorf("error in GenerateSymKey: crypto/rand failed to generate random data")
}
id, err := GenerateRandomID()
if err != nil {
return "", fmt.Errorf("failed to generate ID: %s", err)
}
whisper.keyMu.Lock()
defer whisper.keyMu.Unlock()
if whisper.symKeys[id] != nil {
return "", fmt.Errorf("failed to generate unique ID")
}
whisper.symKeys[id] = key
return id, nil
}
// AddSymKeyDirect stores the key, and returns its id.
func (whisper *Whisper) AddSymKeyDirect(key []byte) (string, error) {
if len(key) != aesKeyLength {
return "", fmt.Errorf("wrong key size: %d", len(key))
}
id, err := GenerateRandomID()
if err != nil {
return "", fmt.Errorf("failed to generate ID: %s", err)
}
whisper.keyMu.Lock()
defer whisper.keyMu.Unlock()
if whisper.symKeys[id] != nil {
return "", fmt.Errorf("failed to generate unique ID")
}
whisper.symKeys[id] = key
return id, nil
}
// AddSymKeyFromPassword generates the key from password, stores it, and returns its id.
func (whisper *Whisper) AddSymKeyFromPassword(password string) (string, error) {
id, err := GenerateRandomID()
if err != nil {
return "", fmt.Errorf("failed to generate ID: %s", err)
}
if whisper.HasSymKey(id) {
return "", fmt.Errorf("failed to generate unique ID")
}
// kdf should run no less than 0.1 seconds on an average computer,
// because it's an once in a session experience
derived := pbkdf2.Key([]byte(password), nil, 65356, aesKeyLength, sha256.New)
if err != nil {
return "", err
}
whisper.keyMu.Lock()
defer whisper.keyMu.Unlock()
// double check is necessary, because deriveKeyMaterial() is very slow
if whisper.symKeys[id] != nil {
return "", fmt.Errorf("critical error: failed to generate unique ID")
}
whisper.symKeys[id] = derived
return id, nil
}
// HasSymKey returns true if there is a key associated with the given id.
// Otherwise returns false.
func (whisper *Whisper) HasSymKey(id string) bool {
whisper.keyMu.RLock()
defer whisper.keyMu.RUnlock()
return whisper.symKeys[id] != nil
}
// DeleteSymKey deletes the key associated with the name string if it exists.
func (whisper *Whisper) DeleteSymKey(id string) bool {
whisper.keyMu.Lock()
defer whisper.keyMu.Unlock()
if whisper.symKeys[id] != nil {
delete(whisper.symKeys, id)
return true
}
return false
}
// GetSymKey returns the symmetric key associated with the given id.
func (whisper *Whisper) GetSymKey(id string) ([]byte, error) {
whisper.keyMu.RLock()
defer whisper.keyMu.RUnlock()
if whisper.symKeys[id] != nil {
return whisper.symKeys[id], nil
}
return nil, fmt.Errorf("non-existent key ID")
}
// Subscribe installs a new message handler used for filtering, decrypting
// and subsequent storing of incoming messages.
func (whisper *Whisper) Subscribe(f *Filter) (string, error) {
s, err := whisper.filters.Install(f)
if err == nil {
whisper.updateBloomFilter(f)
}
return s, err
}
// updateBloomFilter recalculates the new value of bloom filter,
// and informs the peers if necessary.
func (whisper *Whisper) updateBloomFilter(f *Filter) {
aggregate := make([]byte, BloomFilterSize)
for _, t := range f.Topics {
top := BytesToTopic(t)
b := TopicToBloom(top)
aggregate = addBloom(aggregate, b)
}
if !BloomFilterMatch(whisper.BloomFilter(), aggregate) {
// existing bloom filter must be updated
aggregate = addBloom(whisper.BloomFilter(), aggregate)
whisper.SetBloomFilter(aggregate)
}
}
// GetFilter returns the filter by id.
func (whisper *Whisper) GetFilter(id string) *Filter {
return whisper.filters.Get(id)
}
// Unsubscribe removes an installed message handler.
func (whisper *Whisper) Unsubscribe(id string) error {
ok := whisper.filters.Uninstall(id)
if !ok {
return fmt.Errorf("Unsubscribe: Invalid ID")
}
return nil
}
// Send injects a message into the whisper send queue, to be distributed in the
// network in the coming cycles.
func (whisper *Whisper) Send(envelope *Envelope) error {
ok, err := whisper.add(envelope, false)
if err == nil && !ok {
return fmt.Errorf("failed to add envelope")
}
return err
}
// Start implements node.Lifecycle, starting the background data propagation thread
// of the Whisper protocol.
func (whisper *Whisper) Start() error {
log.Info("started whisper v." + ProtocolVersionStr)
whisper.wg.Add(1)
go whisper.update()
numCPU := runtime.NumCPU()
for i := 0; i < numCPU; i++ {
whisper.wg.Add(1)
go whisper.processQueue()
}
return nil
}
// Stop implements node.Lifecycle, stopping the background data propagation thread
// of the Whisper protocol.
func (whisper *Whisper) Stop() error {
close(whisper.quit)
whisper.wg.Wait()
log.Info("whisper stopped")
return nil
}
// HandlePeer is called by the underlying P2P layer when the whisper sub-protocol
// connection is negotiated.
func (whisper *Whisper) HandlePeer(peer *p2p.Peer, rw p2p.MsgReadWriter) error {
// Create the new peer and start tracking it
whisperPeer := newPeer(whisper, peer, rw)
whisper.peerMu.Lock()
whisper.peers[whisperPeer] = struct{}{}
whisper.peerMu.Unlock()
defer func() {
whisper.peerMu.Lock()
delete(whisper.peers, whisperPeer)
whisper.peerMu.Unlock()
}()
// Run the peer handshake and state updates
if err := whisperPeer.handshake(); err != nil {
return err
}
whisperPeer.start()
defer whisperPeer.stop()
return whisper.runMessageLoop(whisperPeer, rw)
}
// runMessageLoop reads and processes inbound messages directly to merge into client-global state.
func (whisper *Whisper) runMessageLoop(p *Peer, rw p2p.MsgReadWriter) error {
for {
// fetch the next packet
packet, err := rw.ReadMsg()
if err != nil {
log.Info("message loop", "peer", p.peer.ID(), "err", err)
return err
}
if packet.Size > whisper.MaxMessageSize() {
log.Warn("oversized message received", "peer", p.peer.ID())
return errors.New("oversized message received")
}
switch packet.Code {
case statusCode:
// this should not happen, but no need to panic; just ignore this message.
log.Warn("unxepected status message received", "peer", p.peer.ID())
case messagesCode:
// decode the contained envelopes
var envelopes []*Envelope
if err := packet.Decode(&envelopes); err != nil {
log.Warn("failed to decode envelopes, peer will be disconnected", "peer", p.peer.ID(), "err", err)
return errors.New("invalid envelopes")
}
trouble := false
for _, env := range envelopes {
cached, err := whisper.add(env, whisper.LightClientMode())
if err != nil {
trouble = true
log.Error("bad envelope received, peer will be disconnected", "peer", p.peer.ID(), "err", err)
}
if cached {
p.mark(env)
}
}
if trouble {
return errors.New("invalid envelope")
}
case powRequirementCode:
s := rlp.NewStream(packet.Payload, uint64(packet.Size))
i, err := s.Uint()
if err != nil {
log.Warn("failed to decode powRequirementCode message, peer will be disconnected", "peer", p.peer.ID(), "err", err)
return errors.New("invalid powRequirementCode message")
}
f := math.Float64frombits(i)
if math.IsInf(f, 0) || math.IsNaN(f) || f < 0.0 {
log.Warn("invalid value in powRequirementCode message, peer will be disconnected", "peer", p.peer.ID(), "err", err)
return errors.New("invalid value in powRequirementCode message")
}
p.powRequirement = f
case bloomFilterExCode:
var bloom []byte
err := packet.Decode(&bloom)
if err == nil && len(bloom) != BloomFilterSize {
err = fmt.Errorf("wrong bloom filter size %d", len(bloom))
}
if err != nil {
log.Warn("failed to decode bloom filter exchange message, peer will be disconnected", "peer", p.peer.ID(), "err", err)
return errors.New("invalid bloom filter exchange message")
}
p.setBloomFilter(bloom)
case p2pMessageCode:
// peer-to-peer message, sent directly to peer bypassing PoW checks, etc.
// this message is not supposed to be forwarded to other peers, and
// therefore might not satisfy the PoW, expiry and other requirements.
// these messages are only accepted from the trusted peer.
if p.trusted {
var envelope Envelope
if err := packet.Decode(&envelope); err != nil {
log.Warn("failed to decode direct message, peer will be disconnected", "peer", p.peer.ID(), "err", err)
return errors.New("invalid direct message")
}
whisper.postEvent(&envelope, true)
}
case p2pRequestCode:
// Must be processed if mail server is implemented. Otherwise ignore.
if whisper.mailServer != nil {
var request Envelope
if err := packet.Decode(&request); err != nil {
log.Warn("failed to decode p2p request message, peer will be disconnected", "peer", p.peer.ID(), "err", err)
return errors.New("invalid p2p request")
}
whisper.mailServer.DeliverMail(p, &request)
}
default:
// New message types might be implemented in the future versions of Whisper.
// For forward compatibility, just ignore.
}
packet.Discard()
}
}
// add inserts a new envelope into the message pool to be distributed within the
// whisper network. It also inserts the envelope into the expiration pool at the
// appropriate time-stamp. In case of error, connection should be dropped.
// param isP2P indicates whether the message is peer-to-peer (should not be forwarded).
func (whisper *Whisper) add(envelope *Envelope, isP2P bool) (bool, error) {
now := uint32(time.Now().Unix())
sent := envelope.Expiry - envelope.TTL
if sent > now {
if sent-DefaultSyncAllowance > now {
return false, fmt.Errorf("envelope created in the future [%x]", envelope.Hash())
}
// recalculate PoW, adjusted for the time difference, plus one second for latency
envelope.calculatePoW(sent - now + 1)
}
if envelope.Expiry < now {
if envelope.Expiry+DefaultSyncAllowance*2 < now {
return false, fmt.Errorf("very old message")
}
log.Debug("expired envelope dropped", "hash", envelope.Hash().Hex())
return false, nil // drop envelope without error
}
if uint32(envelope.size()) > whisper.MaxMessageSize() {
return false, fmt.Errorf("huge messages are not allowed [%x]", envelope.Hash())
}
if envelope.PoW() < whisper.MinPow() {
// maybe the value was recently changed, and the peers did not adjust yet.
// in this case the previous value is retrieved by MinPowTolerance()
// for a short period of peer synchronization.
if envelope.PoW() < whisper.MinPowTolerance() {
return false, fmt.Errorf("envelope with low PoW received: PoW=%f, hash=[%v]", envelope.PoW(), envelope.Hash().Hex())
}
}
if !BloomFilterMatch(whisper.BloomFilter(), envelope.Bloom()) {
// maybe the value was recently changed, and the peers did not adjust yet.
// in this case the previous value is retrieved by BloomFilterTolerance()
// for a short period of peer synchronization.
if !BloomFilterMatch(whisper.BloomFilterTolerance(), envelope.Bloom()) {
return false, fmt.Errorf("envelope does not match bloom filter, hash=[%v], bloom: \n%x \n%x \n%x",
envelope.Hash().Hex(), whisper.BloomFilter(), envelope.Bloom(), envelope.Topic)
}
}
hash := envelope.Hash()
whisper.poolMu.Lock()
_, alreadyCached := whisper.envelopes[hash]
if !alreadyCached {
whisper.envelopes[hash] = envelope
if whisper.expirations[envelope.Expiry] == nil {
whisper.expirations[envelope.Expiry] = mapset.NewThreadUnsafeSet()
}
if !whisper.expirations[envelope.Expiry].Contains(hash) {
whisper.expirations[envelope.Expiry].Add(hash)
}
}
whisper.poolMu.Unlock()
if alreadyCached {
log.Trace("whisper envelope already cached", "hash", envelope.Hash().Hex())
} else {
log.Trace("cached whisper envelope", "hash", envelope.Hash().Hex())
whisper.statsMu.Lock()
whisper.stats.memoryUsed += envelope.size()
whisper.statsMu.Unlock()
whisper.postEvent(envelope, isP2P) // notify the local node about the new message
if whisper.mailServer != nil {
whisper.mailServer.Archive(envelope)
}
}
return true, nil
}
// postEvent queues the message for further processing.
func (whisper *Whisper) postEvent(envelope *Envelope, isP2P bool) {
if isP2P {
whisper.p2pMsgQueue <- envelope
} else {
whisper.checkOverflow()
whisper.messageQueue <- envelope
}
}
// checkOverflow checks if message queue overflow occurs and reports it if necessary.
func (whisper *Whisper) checkOverflow() {
queueSize := len(whisper.messageQueue)
if queueSize == messageQueueLimit {
if !whisper.Overflow() {
whisper.settings.Store(overflowIdx, true)
log.Warn("message queue overflow")
}
} else if queueSize <= messageQueueLimit/2 {
if whisper.Overflow() {
whisper.settings.Store(overflowIdx, false)
log.Warn("message queue overflow fixed (back to normal)")
}
}
}
// processQueue delivers the messages to the watchers during the lifetime of the whisper node.
func (whisper *Whisper) processQueue() {
defer whisper.wg.Done()
var e *Envelope
for {
select {
case <-whisper.quit:
return
case e = <-whisper.messageQueue:
whisper.filters.NotifyWatchers(e, false)
case e = <-whisper.p2pMsgQueue:
whisper.filters.NotifyWatchers(e, true)
}
}
}
// update loops until the lifetime of the whisper node, updating its internal
// state by expiring stale messages from the pool.
func (whisper *Whisper) update() {
defer whisper.wg.Done()
// Start a ticker to check for expirations
expire := time.NewTicker(expirationCycle)
defer expire.Stop()
// Repeat updates until termination is requested
for {
select {
case <-expire.C:
whisper.expire()
case <-whisper.quit:
return
}
}
}
// expire iterates over all the expiration timestamps, removing all stale
// messages from the pools.
func (whisper *Whisper) expire() {
whisper.poolMu.Lock()
defer whisper.poolMu.Unlock()
whisper.statsMu.Lock()
defer whisper.statsMu.Unlock()
whisper.stats.reset()
now := uint32(time.Now().Unix())
for expiry, hashSet := range whisper.expirations {
if expiry < now {
// Dump all expired messages and remove timestamp
hashSet.Each(func(v interface{}) bool {
sz := whisper.envelopes[v.(common.Hash)].size()
delete(whisper.envelopes, v.(common.Hash))
whisper.stats.messagesCleared++
whisper.stats.memoryCleared += sz
whisper.stats.memoryUsed -= sz
return false
})
whisper.expirations[expiry].Clear()
delete(whisper.expirations, expiry)
}
}
}
// Stats returns the whisper node statistics.
func (whisper *Whisper) Stats() Statistics {
whisper.statsMu.Lock()
defer whisper.statsMu.Unlock()
return whisper.stats
}
// Envelopes retrieves all the messages currently pooled by the node.
func (whisper *Whisper) Envelopes() []*Envelope {
whisper.poolMu.RLock()
defer whisper.poolMu.RUnlock()
all := make([]*Envelope, 0, len(whisper.envelopes))
for _, envelope := range whisper.envelopes {
all = append(all, envelope)
}
return all
}
// isEnvelopeCached checks if envelope with specific hash has already been received and cached.
func (whisper *Whisper) isEnvelopeCached(hash common.Hash) bool {
whisper.poolMu.Lock()
defer whisper.poolMu.Unlock()
_, exist := whisper.envelopes[hash]
return exist
}
// reset resets the node's statistics after each expiry cycle.
func (s *Statistics) reset() {
s.cycles++
s.totalMessagesCleared += s.messagesCleared
s.memoryCleared = 0
s.messagesCleared = 0
}
// ValidatePublicKey checks the format of the given public key.
func ValidatePublicKey(k *ecdsa.PublicKey) bool {
return k != nil && k.X != nil && k.Y != nil && k.X.Sign() != 0 && k.Y.Sign() != 0
}
// validatePrivateKey checks the format of the given private key.
func validatePrivateKey(k *ecdsa.PrivateKey) bool {
if k == nil || k.D == nil || k.D.Sign() == 0 {
return false
}
return ValidatePublicKey(&k.PublicKey)
}
// validateDataIntegrity returns false if the data have the wrong or contains all zeros,
// which is the simplest and the most common bug.
func validateDataIntegrity(k []byte, expectedSize int) bool {
if len(k) != expectedSize {
return false
}
if expectedSize > 3 && containsOnlyZeros(k) {
return false
}
return true
}
// containsOnlyZeros checks if the data contain only zeros.
func containsOnlyZeros(data []byte) bool {
for _, b := range data {
if b != 0 {
return false
}
}
return true
}
// bytesToUintLittleEndian converts the slice to 64-bit unsigned integer.
func bytesToUintLittleEndian(b []byte) (res uint64) {
mul := uint64(1)
for i := 0; i < len(b); i++ {
res += uint64(b[i]) * mul
mul *= 256
}
return res
}
// BytesToUintBigEndian converts the slice to 64-bit unsigned integer.
func BytesToUintBigEndian(b []byte) (res uint64) {
for i := 0; i < len(b); i++ {
res *= 256
res += uint64(b[i])
}
return res
}
// GenerateRandomID generates a random string, which is then returned to be used as a key id
func GenerateRandomID() (id string, err error) {
buf, err := generateSecureRandomData(keyIDSize)
if err != nil {
return "", err
}
if !validateDataIntegrity(buf, keyIDSize) {
return "", fmt.Errorf("error in generateRandomID: crypto/rand failed to generate random data")
}
id = common.Bytes2Hex(buf)
return id, err
}
func isFullNode(bloom []byte) bool {
if bloom == nil {
return true
}
for _, b := range bloom {
if b != 255 {
return false
}
}
return true
}
func BloomFilterMatch(filter, sample []byte) bool {
if filter == nil {
return true
}
for i := 0; i < BloomFilterSize; i++ {
f := filter[i]
s := sample[i]
if (f | s) != f {
return false
}
}
return true
}
func addBloom(a, b []byte) []byte {
c := make([]byte, BloomFilterSize)
for i := 0; i < BloomFilterSize; i++ {
c[i] = a[i] | b[i]
}
return c
}
func StandaloneWhisperService(cfg *Config) *Whisper {
if cfg == nil {
cfg = &DefaultConfig
}
whisper := &Whisper{
privateKeys: make(map[string]*ecdsa.PrivateKey),
symKeys: make(map[string][]byte),
envelopes: make(map[common.Hash]*Envelope),
expirations: make(map[uint32]mapset.Set),
peers: make(map[*Peer]struct{}),
messageQueue: make(chan *Envelope, messageQueueLimit),
p2pMsgQueue: make(chan *Envelope, messageQueueLimit),
quit: make(chan struct{}),
syncAllowance: DefaultSyncAllowance,
}
whisper.filters = NewFilters(whisper)
whisper.settings.Store(minPowIdx, cfg.MinimumAcceptedPOW)
whisper.settings.Store(maxMsgSizeIdx, cfg.MaxMessageSize)
whisper.settings.Store(overflowIdx, false)
whisper.settings.Store(restrictConnectionBetweenLightClientsIdx, cfg.RestrictConnectionBetweenLightClients)
// p2p whisper sub protocol handler
whisper.protocol = p2p.Protocol{
Name: ProtocolName,
Version: uint(ProtocolVersion),
Length: NumberOfMessageCodes,
Run: whisper.HandlePeer,
NodeInfo: func() interface{} {
return map[string]interface{}{
"version": ProtocolVersionStr,
"maxMessageSize": whisper.MaxMessageSize(),
"minimumPoW": whisper.MinPow(),
}
},
}
return whisper
}
whisper/whisperv6/whisper_test.go deleted 100644 → 0
View file @ c5d28f0b
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv6
import (
"bytes"
"crypto/ecdsa"
"crypto/sha256"
mrand "math/rand"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/node"
"golang.org/x/crypto/pbkdf2"
)
func TestWhisperBasic(t *testing.T) {
stack, w := newNodeWithWhisper(t)
defer stack.Close()
shh := w.Protocols()[0]
if shh.Name != ProtocolName {
t.Fatalf("failed Protocol Name: %v.", shh.Name)
}
if uint64(shh.Version) != ProtocolVersion {
t.Fatalf("failed Protocol Version: %v.", shh.Version)
}
if shh.Length != NumberOfMessageCodes {
t.Fatalf("failed Protocol Length: %v.", shh.Length)
}
if shh.Run == nil {
t.Fatal("failed shh.Run.")
}
if uint64(w.Version()) != ProtocolVersion {
t.Fatalf("failed whisper Version: %v.", shh.Version)
}
if w.GetFilter("non-existent") != nil {
t.Fatal("failed GetFilter.")
}
peerID := make([]byte, 64)
mrand.Read(peerID)
peer, _ := w.getPeer(peerID)
if peer != nil {
t.Fatal("found peer for random key.")
}
if err := w.AllowP2PMessagesFromPeer(peerID); err == nil {
t.Fatal("failed MarkPeerTrusted.")
}
exist := w.HasSymKey("non-existing")
if exist {
t.Fatal("failed HasSymKey.")
}
key, err := w.GetSymKey("non-existing")
if err == nil {
t.Fatalf("failed GetSymKey(non-existing): false positive. key=%v", key)
}
if key != nil {
t.Fatalf("failed GetSymKey: false positive. key=%v", key)
}
mail := w.Envelopes()
if len(mail) != 0 {
t.Fatalf("failed w.Envelopes(). length=%d", len(mail))
}
derived := pbkdf2.Key(peerID, nil, 65356, aesKeyLength, sha256.New)
if !validateDataIntegrity(derived, aesKeyLength) {
t.Fatalf("failed validateSymmetricKey with param = %v.", derived)
}
if containsOnlyZeros(derived) {
t.Fatalf("failed containsOnlyZeros with param = %v.", derived)
}
buf := []byte{0xFF, 0xE5, 0x80, 0x2, 0}
le := bytesToUintLittleEndian(buf)
be := BytesToUintBigEndian(buf)
if le != uint64(0x280e5ff) {
t.Fatalf("failed bytesToIntLittleEndian: %d.", le)
}
if be != uint64(0xffe5800200) {
t.Fatalf("failed BytesToIntBigEndian: %d.", be)
}
id, err := w.NewKeyPair()
if err != nil {
t.Fatalf("failed to generate new key pair: %v.", err)
}
pk, err := w.GetPrivateKey(id)
if err != nil {
t.Fatalf("failed to retrieve new key pair: %v.", err)
}
if !validatePrivateKey(pk) {
t.Fatalf("failed validatePrivateKey: %v.", pk)
}
if !ValidatePublicKey(&pk.PublicKey) {
t.Fatalf("failed ValidatePublicKey: %v.", pk)
}
}
func TestWhisperAsymmetricKeyImport(t *testing.T) {
stack, w := newNodeWithWhisper(t)
defer stack.Close()
var privateKeys []*ecdsa.PrivateKey
for i := 0; i < 50; i++ {
id, err := w.NewKeyPair()
if err != nil {
t.Fatalf("could not generate key: %v", err)
}
pk, err := w.GetPrivateKey(id)
if err != nil {
t.Fatalf("could not export private key: %v", err)
}
privateKeys = append(privateKeys, pk)
if !w.DeleteKeyPair(id) {
t.Fatal("could not delete private key")
}
}
for _, pk := range privateKeys {
if _, err := w.AddKeyPair(pk); err != nil {
t.Fatalf("could not import private key: %v", err)
}
}
}
func TestWhisperIdentityManagement(t *testing.T) {
stack, w := newNodeWithWhisper(t)
defer stack.Close()
id1, err := w.NewKeyPair()
if err != nil {
t.Fatalf("failed to generate new key pair: %s.", err)
}
id2, err := w.NewKeyPair()
if err != nil {
t.Fatalf("failed to generate new key pair: %s.", err)
}
pk1, err := w.GetPrivateKey(id1)
if err != nil {
t.Fatalf("failed to retrieve the key pair: %s.", err)
}
pk2, err := w.GetPrivateKey(id2)
if err != nil {
t.Fatalf("failed to retrieve the key pair: %s.", err)
}
if !w.HasKeyPair(id1) {
t.Fatal("failed HasIdentity(pk1).")
}
if !w.HasKeyPair(id2) {
t.Fatal("failed HasIdentity(pk2).")
}
if pk1 == nil {
t.Fatal("failed GetIdentity(pk1).")
}
if pk2 == nil {
t.Fatal("failed GetIdentity(pk2).")
}
if !validatePrivateKey(pk1) {
t.Fatal("pk1 is invalid.")
}
if !validatePrivateKey(pk2) {
t.Fatal("pk2 is invalid.")
}
// Delete one identity
done := w.DeleteKeyPair(id1)
if !done {
t.Fatal("failed to delete id1.")
}
pk1, err = w.GetPrivateKey(id1)
if err == nil {
t.Fatalf("retrieve the key pair: false positive. key=%v", pk1)
}
pk2, err = w.GetPrivateKey(id2)
if err != nil {
t.Fatalf("failed to retrieve the key pair: %s.", err)
}
if w.HasKeyPair(id1) {
t.Fatal("failed DeleteIdentity(pub1): still exist.")
}
if !w.HasKeyPair(id2) {
t.Fatal("failed DeleteIdentity(pub1): pub2 does not exist.")
}
if pk1 != nil {
t.Fatal("failed DeleteIdentity(pub1): first key still exist.")
}
if pk2 == nil {
t.Fatal("failed DeleteIdentity(pub1): second key does not exist.")
}
// Delete again non-existing identity
done = w.DeleteKeyPair(id1)
if done {
t.Fatal("delete id1: false positive.")
}
pk1, err = w.GetPrivateKey(id1)
if err == nil {
t.Fatalf("retrieve the key pair: false positive. key=%v", pk1)
}
pk2, err = w.GetPrivateKey(id2)
if err != nil {
t.Fatalf("failed to retrieve the key pair: %s.", err)
}
if w.HasKeyPair(id1) {
t.Fatal("failed delete non-existing identity: exist.")
}
if !w.HasKeyPair(id2) {
t.Fatal("failed delete non-existing identity: pub2 does not exist.")
}
if pk1 != nil {
t.Fatalf("failed delete non-existing identity: first key exist. key=%v", pk1)
}
if pk2 == nil {
t.Fatal("failed delete non-existing identity: second key does not exist.")
}
// Delete second identity
done = w.DeleteKeyPair(id2)
if !done {
t.Fatal("failed to delete id2.")
}
pk1, err = w.GetPrivateKey(id1)
if err == nil {
t.Fatalf("retrieve the key pair: false positive. key=%v", pk1)
}
pk2, err = w.GetPrivateKey(id2)
if err == nil {
t.Fatalf("retrieve the key pair: false positive. key=%v", pk2)
}
if w.HasKeyPair(id1) {
t.Fatal("failed delete second identity: first identity exist.")
}
if w.HasKeyPair(id2) {
t.Fatal("failed delete second identity: still exist.")
}
if pk1 != nil {
t.Fatalf("failed delete second identity: first key exist. key=%v", pk1)
}
if pk2 != nil {
t.Fatalf("failed delete second identity: second key exist. key=%v", pk2)
}
}
func TestWhisperSymKeyManagement(t *testing.T) {
InitSingleTest()
var (
k1, k2 []byte
id2 = string("arbitrary-string-2")
)
stack, w := newNodeWithWhisper(t)
defer stack.Close()
id1, err := w.GenerateSymKey()
if err != nil {
t.Fatalf("failed GenerateSymKey with seed %d: %s.", seed, err)
}
k1, err = w.GetSymKey(id1)
if err != nil {
t.Fatalf("failed GetSymKey(id1). err=%v", err)
}
k2, err = w.GetSymKey(id2)
if err == nil {
t.Fatalf("failed GetSymKey(id2): false positive. key=%v", k2)
}
if !w.HasSymKey(id1) {
t.Fatal("failed HasSymKey(id1).")
}
if w.HasSymKey(id2) {
t.Fatal("failed HasSymKey(id2): false positive.")
}
if k1 == nil {
t.Fatal("first key does not exist.")
}
if k2 != nil {
t.Fatalf("second key still exist. key=%v", k2)
}
// add existing id, nothing should change
randomKey := make([]byte, aesKeyLength)
mrand.Read(randomKey)
id1, err = w.AddSymKeyDirect(randomKey)
if err != nil {
t.Fatalf("failed AddSymKey with seed %d: %s.", seed, err)
}
k1, err = w.GetSymKey(id1)
if err != nil {
t.Fatalf("failed w.GetSymKey(id1). err=%v", err)
}
k2, err = w.GetSymKey(id2)
if err == nil {
t.Fatalf("failed w.GetSymKey(id2): false positive. key=%v", k2)
}
if !w.HasSymKey(id1) {
t.Fatal("failed w.HasSymKey(id1).")
}
if w.HasSymKey(id2) {
t.Fatal("failed w.HasSymKey(id2): false positive.")
}
if k1 == nil {
t.Fatal("first key does not exist.")
}
if !bytes.Equal(k1, randomKey) {
t.Fatal("k1 != randomKey.")
}
if k2 != nil {
t.Fatalf("second key already exist. key=%v", k2)
}
id2, err = w.AddSymKeyDirect(randomKey)
if err != nil {
t.Fatalf("failed AddSymKey(id2) with seed %d: %s.", seed, err)
}
k1, err = w.GetSymKey(id1)
if err != nil {
t.Fatalf("failed w.GetSymKey(id1). err=%v", err)
}
k2, err = w.GetSymKey(id2)
if err != nil {
t.Fatalf("failed w.GetSymKey(id2). err=%v", err)
}
if !w.HasSymKey(id1) {
t.Fatal("HasSymKey(id1) failed.")
}
if !w.HasSymKey(id2) {
t.Fatal("HasSymKey(id2) failed.")
}
if k1 == nil {
t.Fatal("k1 does not exist.")
}
if k2 == nil {
t.Fatal("k2 does not exist.")
}
if !bytes.Equal(k1, k2) {
t.Fatal("k1 != k2.")
}
if !bytes.Equal(k1, randomKey) {
t.Fatal("k1 != randomKey.")
}
if len(k1) != aesKeyLength {
t.Fatalf("wrong length of k1. length=%d", len(k1))
}
if len(k2) != aesKeyLength {
t.Fatalf("wrong length of k2. length=%d", len(k2))
}
w.DeleteSymKey(id1)
k1, err = w.GetSymKey(id1)
if err == nil {
t.Fatal("failed w.GetSymKey(id1): false positive.")
}
if k1 != nil {
t.Fatalf("failed GetSymKey(id1): false positive. key=%v", k1)
}
k2, err = w.GetSymKey(id2)
if err != nil {
t.Fatalf("failed w.GetSymKey(id2). err=%v", err)
}
if w.HasSymKey(id1) {
t.Fatal("failed to delete first key: still exist.")
}
if !w.HasSymKey(id2) {
t.Fatal("failed to delete first key: second key does not exist.")
}
if k2 == nil {
t.Fatal("failed to delete first key: second key is nil.")
}
w.DeleteSymKey(id1)
w.DeleteSymKey(id2)
k1, err = w.GetSymKey(id1)
if err == nil {
t.Fatalf("failed w.GetSymKey(id1): false positive. key=%v", k1)
}
k2, err = w.GetSymKey(id2)
if err == nil {
t.Fatalf("failed w.GetSymKey(id2): false positive. key=%v", k2)
}
if k1 != nil || k2 != nil {
t.Fatal("k1 or k2 is not nil")
}
if w.HasSymKey(id1) {
t.Fatal("failed to delete second key: first key exist.")
}
if w.HasSymKey(id2) {
t.Fatal("failed to delete second key: still exist.")
}
if k1 != nil {
t.Fatal("failed to delete second key: first key is not nil.")
}
if k2 != nil {
t.Fatal("failed to delete second key: second key is not nil.")
}
randomKey = make([]byte, aesKeyLength+1)
mrand.Read(randomKey)
_, err = w.AddSymKeyDirect(randomKey)
if err == nil {
t.Fatalf("added the key with wrong size, seed %d.", seed)
}
const password = "arbitrary data here"
id1, err = w.AddSymKeyFromPassword(password)
if err != nil {
t.Fatalf("failed AddSymKeyFromPassword(id1) with seed %d: %s.", seed, err)
}
id2, err = w.AddSymKeyFromPassword(password)
if err != nil {
t.Fatalf("failed AddSymKeyFromPassword(id2) with seed %d: %s.", seed, err)
}
k1, err = w.GetSymKey(id1)
if err != nil {
t.Fatalf("failed w.GetSymKey(id1). err=%v", err)
}
k2, err = w.GetSymKey(id2)
if err != nil {
t.Fatalf("failed w.GetSymKey(id2). err=%v", err)
}
if !w.HasSymKey(id1) {
t.Fatal("HasSymKey(id1) failed.")
}
if !w.HasSymKey(id2) {
t.Fatal("HasSymKey(id2) failed.")
}
if !validateDataIntegrity(k2, aesKeyLength) {
t.Fatal("key validation failed.")
}
if !bytes.Equal(k1, k2) {
t.Fatal("k1 != k2.")
}
}
func TestExpiry(t *testing.T) {
InitSingleTest()
stack, w := newNodeWithWhisper(t)
defer stack.Close()
w.SetMinimumPowTest(0.0000001)
defer w.SetMinimumPowTest(DefaultMinimumPoW)
w.Start()
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
params.TTL = 1
messagesCount := 5
// Send a few messages one after another. Due to low PoW and expiration buckets
// with one second resolution, it covers a case when there are multiple items
// in a single expiration bucket.
for i := 0; i < messagesCount; i++ {
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
err = w.Send(env)
if err != nil {
t.Fatalf("failed to send envelope with seed %d: %s.", seed, err)
}
}
// wait till received or timeout
var received, expired bool
ticker := time.NewTicker(100 * time.Millisecond)
defer ticker.Stop()
for j := 0; j < 20; j++ {
<-ticker.C
if len(w.Envelopes()) == messagesCount {
received = true
break
}
}
if !received {
t.Fatalf("did not receive the sent envelope, seed: %d.", seed)
}
// wait till expired or timeout
for j := 0; j < 20; j++ {
<-ticker.C
if len(w.Envelopes()) == 0 {
expired = true
break
}
}
if !expired {
t.Fatalf("expire failed, seed: %d.", seed)
}
}
func TestCustomization(t *testing.T) {
InitSingleTest()
stack, w := newNodeWithWhisper(t)
defer stack.Close()
defer w.SetMinimumPowTest(DefaultMinimumPoW)
defer w.SetMaxMessageSize(DefaultMaxMessageSize)
w.Start()
const smallPoW = 0.00001
f, err := generateFilter(t, true)
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
params.KeySym = f.KeySym
params.Topic = BytesToTopic(f.Topics[2])
params.PoW = smallPoW
params.TTL = 3600 * 24 // one day
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
err = w.Send(env)
if err == nil {
t.Fatalf("successfully sent envelope with PoW %.06f, false positive (seed %d).", env.PoW(), seed)
}
w.SetMinimumPowTest(smallPoW / 2)
err = w.Send(env)
if err != nil {
t.Fatalf("failed to send envelope with seed %d: %s.", seed, err)
}
params.TTL++
msg, err = NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err = msg.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
w.SetMaxMessageSize(uint32(env.size() - 1))
err = w.Send(env)
if err == nil {
t.Fatalf("successfully sent oversized envelope (seed %d): false positive.", seed)
}
w.SetMaxMessageSize(DefaultMaxMessageSize)
err = w.Send(env)
if err != nil {
t.Fatalf("failed to send second envelope with seed %d: %s.", seed, err)
}
// wait till received or timeout
var received bool
ticker := time.NewTicker(100 * time.Millisecond)
defer ticker.Stop()
for j := 0; j < 20; j++ {
<-ticker.C
if len(w.Envelopes()) > 1 {
received = true
break
}
}
if !received {
t.Fatalf("did not receive the sent envelope, seed: %d.", seed)
}
// check w.messages()
_, err = w.Subscribe(f)
if err != nil {
t.Fatalf("failed subscribe with seed %d: %s.", seed, err)
}
<-ticker.C
mail := f.Retrieve()
if len(mail) > 0 {
t.Fatalf("received premature mail. mail=%v", mail)
}
}
func TestSymmetricSendCycle(t *testing.T) {
InitSingleTest()
stack, w := newNodeWithWhisper(t)
defer stack.Close()
defer w.SetMinimumPowTest(DefaultMinimumPoW)
defer w.SetMaxMessageSize(DefaultMaxMessageSize)
w.Start()
filter1, err := generateFilter(t, true)
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
filter1.PoW = DefaultMinimumPoW
// Copy the first filter since some of its fields
// are randomly gnerated.
filter2 := &Filter{
KeySym: filter1.KeySym,
Topics: filter1.Topics,
PoW: filter1.PoW,
AllowP2P: filter1.AllowP2P,
Messages: make(map[common.Hash]*ReceivedMessage),
}
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
filter1.Src = &params.Src.PublicKey
filter2.Src = &params.Src.PublicKey
params.KeySym = filter1.KeySym
params.Topic = BytesToTopic(filter1.Topics[2])
params.PoW = filter1.PoW
params.WorkTime = 10
params.TTL = 50
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
_, err = w.Subscribe(filter1)
if err != nil {
t.Fatalf("failed subscribe 1 with seed %d: %s.", seed, err)
}
_, err = w.Subscribe(filter2)
if err != nil {
t.Fatalf("failed subscribe 2 with seed %d: %s.", seed, err)
}
err = w.Send(env)
if err != nil {
t.Fatalf("Failed sending envelope with PoW %.06f (seed %d): %s", env.PoW(), seed, err)
}
// wait till received or timeout
var received bool
ticker := time.NewTicker(10 * time.Millisecond)
defer ticker.Stop()
for j := 0; j < 200; j++ {
<-ticker.C
if len(w.Envelopes()) > 0 {
received = true
break
}
}
if !received {
t.Fatalf("did not receive the sent envelope, seed: %d.", seed)
}
// check w.messages()
<-ticker.C
mail1 := filter1.Retrieve()
mail2 := filter2.Retrieve()
if len(mail2) == 0 {
t.Fatal("did not receive any email for filter 2.")
}
if len(mail1) == 0 {
t.Fatal("did not receive any email for filter 1.")
}
}
func TestSymmetricSendWithoutAKey(t *testing.T) {
InitSingleTest()
stack, w := newNodeWithWhisper(t)
defer stack.Close()
defer w.SetMinimumPowTest(DefaultMinimumPoW)
defer w.SetMaxMessageSize(DefaultMaxMessageSize)
w.Start()
filter, err := generateFilter(t, true)
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
filter.PoW = DefaultMinimumPoW
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
filter.Src = nil
params.KeySym = filter.KeySym
params.Topic = BytesToTopic(filter.Topics[2])
params.PoW = filter.PoW
params.WorkTime = 10
params.TTL = 50
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
_, err = w.Subscribe(filter)
if err != nil {
t.Fatalf("failed subscribe 1 with seed %d: %s.", seed, err)
}
err = w.Send(env)
if err != nil {
t.Fatalf("Failed sending envelope with PoW %.06f (seed %d): %s", env.PoW(), seed, err)
}
// wait till received or timeout
var received bool
ticker := time.NewTicker(10 * time.Millisecond)
defer ticker.Stop()
for j := 0; j < 200; j++ {
<-ticker.C
if len(w.Envelopes()) > 0 {
received = true
break
}
}
if !received {
t.Fatalf("did not receive the sent envelope, seed: %d.", seed)
}
// check w.messages()
<-ticker.C
mail := filter.Retrieve()
if len(mail) == 0 {
t.Fatal("did not receive message in spite of not setting a public key")
}
}
func TestSymmetricSendKeyMismatch(t *testing.T) {
InitSingleTest()
stack, w := newNodeWithWhisper(t)
defer stack.Close()
defer w.SetMinimumPowTest(DefaultMinimumPoW)
defer w.SetMaxMessageSize(DefaultMaxMessageSize)
w.Start()
filter, err := generateFilter(t, true)
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
filter.PoW = DefaultMinimumPoW
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
params.KeySym = filter.KeySym
params.Topic = BytesToTopic(filter.Topics[2])
params.PoW = filter.PoW
params.WorkTime = 10
params.TTL = 50
msg, err := NewSentMessage(params)
if err != nil {
t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
}
env, err := msg.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
_, err = w.Subscribe(filter)
if err != nil {
t.Fatalf("failed subscribe 1 with seed %d: %s.", seed, err)
}
err = w.Send(env)
if err != nil {
t.Fatalf("Failed sending envelope with PoW %.06f (seed %d): %s", env.PoW(), seed, err)
}
// wait till received or timeout
var received bool
ticker := time.NewTicker(10 * time.Millisecond)
defer ticker.Stop()
for j := 0; j < 200; j++ {
<-ticker.C
if len(w.Envelopes()) > 0 {
received = true
break
}
}
if !received {
t.Fatalf("did not receive the sent envelope, seed: %d.", seed)
}
// check w.messages()
<-ticker.C
mail := filter.Retrieve()
if len(mail) > 0 {
t.Fatalf("received a message when keys weren't matching. message=%v", mail)
}
}
func TestBloom(t *testing.T) {
topic := TopicType{0, 0, 255, 6}
b := TopicToBloom(topic)
x := make([]byte, BloomFilterSize)
x[0] = byte(1)
x[32] = byte(1)
x[BloomFilterSize-1] = byte(128)
if !BloomFilterMatch(x, b) || !BloomFilterMatch(b, x) {
t.Fatal("bloom filter does not match the mask")
}
_, err := mrand.Read(b)
if err != nil {
t.Fatalf("math rand error. err=%v", err)
}
_, err = mrand.Read(x)
if err != nil {
t.Fatalf("math rand error. err=%v", err)
}
if !BloomFilterMatch(b, b) {
t.Fatal("bloom filter does not match self")
}
x = addBloom(x, b)
if !BloomFilterMatch(x, b) {
t.Fatal("bloom filter does not match combined bloom")
}
if !isFullNode(nil) {
t.Fatal("isFullNode did not recognize nil as full node")
}
x[17] = 254
if isFullNode(x) {
t.Fatal("isFullNode false positive")
}
for i := 0; i < BloomFilterSize; i++ {
b[i] = byte(255)
}
if !isFullNode(b) {
t.Fatal("isFullNode false negative")
}
if BloomFilterMatch(x, b) {
t.Fatal("bloomFilterMatch false positive")
}
if !BloomFilterMatch(b, x) {
t.Fatal("bloomFilterMatch false negative")
}
stack, w := newNodeWithWhisper(t)
defer stack.Close()
f := w.BloomFilter()
if f != nil {
t.Fatal("wrong bloom on creation")
}
err = w.SetBloomFilter(x)
if err != nil {
t.Fatalf("failed to set bloom filter: %v", err)
}
f = w.BloomFilter()
if !BloomFilterMatch(f, x) || !BloomFilterMatch(x, f) {
t.Fatal("retireved wrong bloom filter")
}
}
// newNodeWithWhisper creates a new node using a default config and
// creates and registers a new Whisper service on it.
func newNodeWithWhisper(t *testing.T) (*node.Node, *Whisper) {
stack, err := node.New(&node.DefaultConfig)
if err != nil {
t.Fatalf("could not create new node: %v", err)
}
w, err := New(stack, &DefaultConfig)
if err != nil {
t.Fatalf("could not create new whisper service: %v", err)
}
err = stack.Start()
if err != nil {
t.Fatalf("could not start node: %v", err)
}
return stack, w
}
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