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whisper: big refactoring (#13852) 

* whisper: GetMessages fixed; size restriction updated
* whisper: made PoW and MaxMsgSize customizable
* whisper: test added
* whisper: sym key management changed
* whisper: identity management refactored
* whisper: API refactoring (Post and Filter)
* whisper: big refactoring complete
* whisper: spelling fix
* whisper: variable topic size allowed for a filter
* whisper: final update
* whisper: formatting
* whisper: file exchange introduced in wnode
* whisper: bugfix
* whisper: API updated + new tests
* whisper: statistics updated
* whisper: wnode server updated
* whisper: allowed filtering for variable topic size
* whisper: tests added
* whisper: resolving merge conflicts
* whisper: refactoring (documenting mostly)
* whsiper: tests fixed
* whisper: down cased error messages
* whisper: documenting the API functions
* whisper: logging fixed
* whisper: fixed wnode parameters
* whisper: logs fixed (typos)
This commit is contained in:
gluk256 2017-04-09 23:49:22 +02:00 committed by Felix Lange
parent 8570ef19eb
commit 9cd7135516
14 changed files with 1398 additions and 731 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

193
cmd/wnode/main.go
View File

@ -27,7 +27,9 @@ import (
"encoding/hex"
"flag"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strconv"
"strings"
"time"
@ -46,7 +48,6 @@ import (
)
const quitCommand = "~Q"
const symKeyName = "da919ea33001b04dfc630522e33078ec0df11"
// singletons
var (
@ -64,7 +65,8 @@ var (
pub *ecdsa.PublicKey
asymKey *ecdsa.PrivateKey
nodeid *ecdsa.PrivateKey
topic whisper.TopicType
topic []byte
asymKeyID string
filterID string
symPass string
msPassword string
@ -72,27 +74,30 @@ var (
// cmd arguments
var (
echoMode = flag.Bool("e", false, "echo mode: prints some arguments for diagnostics")
bootstrapMode = flag.Bool("b", false, "boostrap node: don't actively connect to peers, wait for incoming connections")
forwarderMode = flag.Bool("f", false, "forwarder mode: only forward messages, neither send nor decrypt messages")
mailServerMode = flag.Bool("s", false, "mail server mode: delivers expired messages on demand")
requestMail = flag.Bool("r", false, "request expired messages from the bootstrap server")
asymmetricMode = flag.Bool("a", false, "use asymmetric encryption")
testMode = flag.Bool("t", false, "use of predefined parameters for diagnostics")
generateKey = flag.Bool("k", false, "generate and show the private key")
bootstrapMode = flag.Bool("standalone", false, "boostrap node: don't actively connect to peers, wait for incoming connections")
forwarderMode = flag.Bool("forwarder", false, "forwarder mode: only forward messages, neither send 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")
testMode = flag.Bool("test", false, "use of predefined parameters for diagnostics")
echoMode = flag.Bool("echo", false, "echo mode: prints some arguments for diagnostics")
argVerbosity = flag.Int("verbosity", int(log.LvlWarn), "log verbosity level")
argTTL = flag.Uint("ttl", 30, "time-to-live for messages in seconds")
argWorkTime = flag.Uint("work", 5, "work time in seconds")
argPoW = flag.Float64("pow", whisper.MinimumPoW, "PoW for normal messages in float format (e.g. 2.7)")
argServerPoW = flag.Float64("mspow", whisper.MinimumPoW, "PoW requirement for Mail Server request")
argMaxSize = flag.Int("maxsize", whisper.DefaultMaxMessageLength, "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)")
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 incoming messages will be saved as files")
)
func main() {
@ -124,7 +129,7 @@ func processArgs() {
if err != nil {
utils.Fatalf("Failed to parse the topic: %s", err)
}
topic = whisper.BytesToTopic(x)
topic = x
}
if *asymmetricMode && len(*argPub) > 0 {
@ -134,6 +139,14 @@ func processArgs() {
}
}
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()
}
@ -199,9 +212,40 @@ func initialize() {
shh = whisper.New()
}
asymKey = shh.NewIdentity()
if *argPoW != whisper.DefaultMinimumPoW {
err := shh.SetMinimumPoW(*argPoW)
if err != nil {
utils.Fatalf("Failed to set PoW: %s", err)
}
}
if *argMaxSize != whisper.DefaultMaxMessageLength {
err := shh.SetMaxMessageLength(*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 {
nodeid = shh.NewIdentity()
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
@ -213,7 +257,8 @@ func initialize() {
Config: p2p.Config{
PrivateKey: nodeid,
MaxPeers: maxPeers,
Name: common.MakeName("whisper-go", "5.0"),
Discovery: true,
Name: common.MakeName("wnode", "5.0"),
Protocols: shh.Protocols(),
ListenAddr: *argIP,
NAT: nat.Any(),
@ -288,8 +333,14 @@ func configureNode() {
}
}
shh.AddSymKey(symKeyName, []byte(symPass))
symKey = shh.GetSymKey(symKeyName)
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))
}
@ -302,12 +353,12 @@ func configureNode() {
}
filter := whisper.Filter{
KeySym: symKey,
KeyAsym: asymKey,
Topics: []whisper.TopicType{topic},
AcceptP2P: p2pAccept,
KeySym: symKey,
KeyAsym: asymKey,
Topics: [][]byte{topic},
AllowP2P: p2pAccept,
}
filterID, err = shh.Watch(&filter)
filterID, err = shh.Subscribe(&filter)
if err != nil {
utils.Fatalf("Failed to install filter: %s", err)
}
@ -351,6 +402,8 @@ func run() {
if *requestMail {
requestExpiredMessagesLoop()
} else if *fileExMode {
sendFilesLoop()
} else {
sendLoop()
}
@ -376,6 +429,31 @@ func sendLoop() {
}
}
func sendFilesLoop() {
for {
s := scanLine("")
if s == quitCommand {
fmt.Println("Quit command received")
close(done)
break
}
b, err := ioutil.ReadFile(s)
if err != nil {
fmt.Printf(">>> Error: %s \n", err)
continue
} 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 scanLine(prompt string) string {
if len(prompt) > 0 {
fmt.Print(prompt)
@ -402,29 +480,36 @@ func scanUint(prompt string) uint32 {
return uint32(i)
}
func sendMsg(payload []byte) {
func sendMsg(payload []byte) common.Hash {
params := whisper.MessageParams{
Src: asymKey,
Dst: pub,
KeySym: symKey,
Payload: payload,
Topic: topic,
Topic: whisper.BytesToTopic(topic),
TTL: uint32(*argTTL),
PoW: *argPoW,
WorkTime: uint32(*argWorkTime),
}
msg := whisper.NewSentMessage(&params)
if msg == nil {
fmt.Printf("failed to create new message (OS level error)")
os.Exit(0)
}
envelope, err := msg.Wrap(&params)
if err != nil {
fmt.Printf("failed to seal message: %v \n", err)
return
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() {
@ -440,7 +525,11 @@ func messageLoop() {
case <-ticker.C:
messages := f.Retrieve()
for _, msg := range messages {
printMessageInfo(msg)
if *fileExMode || len(msg.Payload) > 2048 {
writeMessageToFile(*argSaveDir, msg)
} else {
printMessageInfo(msg)
}
}
case <-done:
return
@ -464,19 +553,47 @@ func printMessageInfo(msg *whisper.ReceivedMessage) {
}
}
func writeMessageToFile(dir string, msg *whisper.ReceivedMessage) {
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)
}
if whisper.IsPubKeyEqual(msg.Src, &asymKey.PublicKey) {
// message from myself: don't save, only report
fmt.Printf("\n%s <%x>: message received: '%s'\n", timestamp, address, name)
} else if len(dir) > 0 {
fullpath := filepath.Join(dir, name)
err := ioutil.WriteFile(fullpath, msg.Payload, 0644)
if err != nil {
fmt.Printf("\n%s {%x}: message received but not saved: %s\n", timestamp, address, err)
} else {
fmt.Printf("\n%s {%x}: message received and saved as '%s' (%d bytes)\n", timestamp, address, name, len(msg.Payload))
}
} else {
fmt.Printf("\n%s {%x}: big message received (%d bytes), but not saved: %s\n", timestamp, address, len(msg.Payload), name)
}
}
func requestExpiredMessagesLoop() {
var key, peerID []byte
var timeLow, timeUpp uint32
var t string
var xt, empty whisper.TopicType
err := shh.AddSymKey(mailserver.MailServerKeyName, []byte(msPassword))
keyID, err := shh.AddSymKeyFromPassword(msPassword)
if err != nil {
utils.Fatalf("Failed to create symmetric key for mail request: %s", err)
}
key = shh.GetSymKey(mailserver.MailServerKeyName)
key, err = shh.GetSymKey(keyID)
if err != nil {
utils.Fatalf("Failed to save symmetric key for mail request: %s", err)
}
peerID = extractIdFromEnode(*argEnode)
shh.MarkPeerTrusted(peerID)
shh.AllowP2PMessagesFromPeer(peerID)
for {
timeLow = scanUint("Please enter the lower limit of the time range (unix timestamp): ")
@ -509,6 +626,9 @@ func requestExpiredMessagesLoop() {
params.WorkTime = 5
msg := whisper.NewSentMessage(&params)
if msg == nil {
utils.Fatalf("failed to create new message (OS level error)")
}
env, err := msg.Wrap(&params)
if err != nil {
utils.Fatalf("Wrap failed: %s", err)
@ -527,7 +647,6 @@ func extractIdFromEnode(s string) []byte {
n, err := discover.ParseNode(s)
if err != nil {
utils.Fatalf("Failed to parse enode: %s", err)
return nil
}
return n.ID[:]
}

9
whisper/mailserver/mailserver.go
View File

@ -31,8 +31,6 @@ import (
"github.com/syndtr/goleveldb/leveldb/util"
)
const MailServerKeyName = "958e04ab302fb36ad2616a352cbac79d"
type WMailServer struct {
db *leveldb.DB
w *whisper.Whisper
@ -75,11 +73,14 @@ func (s *WMailServer) Init(shh *whisper.Whisper, path string, password string, p
s.w = shh
s.pow = pow
err = s.w.AddSymKey(MailServerKeyName, []byte(password))
MailServerKeyID, err := s.w.AddSymKeyFromPassword(password)
if err != nil {
utils.Fatalf("Failed to create symmetric key for MailServer: %s", err)
}
s.key = s.w.GetSymKey(MailServerKeyName)
s.key, err = s.w.GetSymKey(MailServerKeyID)
if err != nil {
utils.Fatalf("Failed to save symmetric key for MailServer")
}
}
func (s *WMailServer) Close() {

20
whisper/mailserver/server_test.go
View File

@ -30,8 +30,8 @@ import (
)
const powRequirement = 0.00001
const keyName = "6d604bac5401ce9a6b995f1b45a4ab"
var keyID string
var shh *whisper.Whisper
var seed = time.Now().Unix()
@ -90,7 +90,7 @@ func TestMailServer(t *testing.T) {
server.Init(shh, dir, password, powRequirement)
defer server.Close()
err = shh.AddSymKey(keyName, []byte(password))
keyID, err = shh.AddSymKeyFromPassword(password)
if err != nil {
t.Fatalf("Failed to create symmetric key for mail request: %s", err)
}
@ -102,7 +102,14 @@ func TestMailServer(t *testing.T) {
}
func deliverTest(t *testing.T, server *WMailServer, env *whisper.Envelope) {
testPeerID := shh.NewIdentity()
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,
@ -167,8 +174,13 @@ func createRequest(t *testing.T, p *ServerTestParams) *whisper.Envelope {
binary.BigEndian.PutUint32(data[4:], p.upp)
copy(data[8:], p.topic[:])
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: shh.GetSymKey(keyName),
KeySym: key,
Topic: p.topic,
Payload: data,
PoW: powRequirement * 2,

500
whisper/whisperv5/api.go
View File

@ -20,15 +20,14 @@ import (
"encoding/json"
"errors"
"fmt"
mathrand "math/rand"
"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/discover"
)
var whisperOffLineErr = errors.New("whisper is offline")
var whisperOfflineErr = errors.New("whisper is offline")
// PublicWhisperAPI provides the whisper RPC service.
type PublicWhisperAPI struct {
@ -43,7 +42,7 @@ func NewPublicWhisperAPI(w *Whisper) *PublicWhisperAPI {
// Start starts the Whisper worker threads.
func (api *PublicWhisperAPI) Start() error {
if api.whisper == nil {
return whisperOffLineErr
return whisperOfflineErr
}
return api.whisper.Start(nil)
}
@ -51,7 +50,7 @@ func (api *PublicWhisperAPI) Start() error {
// Stop stops the Whisper worker threads.
func (api *PublicWhisperAPI) Stop() error {
if api.whisper == nil {
return whisperOffLineErr
return whisperOfflineErr
}
return api.whisper.Stop()
}
@ -59,179 +58,219 @@ func (api *PublicWhisperAPI) Stop() error {
// Version returns the Whisper version this node offers.
func (api *PublicWhisperAPI) Version() (hexutil.Uint, error) {
if api.whisper == nil {
return 0, whisperOffLineErr
return 0, whisperOfflineErr
}
return hexutil.Uint(api.whisper.Version()), nil
}
// Stats returns the Whisper statistics for diagnostics.
func (api *PublicWhisperAPI) Stats() (string, error) {
// Info returns the Whisper statistics for diagnostics.
func (api *PublicWhisperAPI) Info() (string, error) {
if api.whisper == nil {
return "", whisperOffLineErr
return "", whisperOfflineErr
}
return api.whisper.Stats(), nil
}
// MarkPeerTrusted marks specific peer trusted, which will allow it
// SetMaxMessageLength sets the maximal message length allowed by this node
func (api *PublicWhisperAPI) SetMaxMessageLength(val int) error {
if api.whisper == nil {
return whisperOfflineErr
}
return api.whisper.SetMaxMessageLength(val)
}
// SetMinimumPoW sets the minimal PoW required by this node
func (api *PublicWhisperAPI) SetMinimumPoW(val float64) error {
if api.whisper == nil {
return whisperOfflineErr
}
return api.whisper.SetMinimumPoW(val)
}
// AllowP2PMessagesFromPeer marks specific peer trusted, which will allow it
// to send historic (expired) messages.
func (api *PublicWhisperAPI) MarkPeerTrusted(peerID hexutil.Bytes) error {
func (api *PublicWhisperAPI) AllowP2PMessagesFromPeer(enode string) error {
if api.whisper == nil {
return whisperOffLineErr
return whisperOfflineErr
}
return api.whisper.MarkPeerTrusted(peerID)
n, err := discover.ParseNode(enode)
if err != nil {
return errors.New("failed to parse enode of trusted peer: " + err.Error())
}
return api.whisper.AllowP2PMessagesFromPeer(n.ID[:])
}
// RequestHistoricMessages requests the peer to deliver the old (expired) messages.
// data contains parameters (time frame, payment details, etc.), required
// by the remote email-like server. Whisper is not aware about the data format,
// it will just forward the raw data to the server.
//func (api *PublicWhisperAPI) RequestHistoricMessages(peerID hexutil.Bytes, data hexutil.Bytes) error {
// if api.whisper == nil {
// return whisperOffLineErr
// }
// return api.whisper.RequestHistoricMessages(peerID, data)
//}
// HasIdentity checks if the whisper node is configured with the private key
// HasKeyPair checks if the whisper node is configured with the private key
// of the specified public pair.
func (api *PublicWhisperAPI) HasIdentity(identity string) (bool, error) {
func (api *PublicWhisperAPI) HasKeyPair(id string) (bool, error) {
if api.whisper == nil {
return false, whisperOffLineErr
return false, whisperOfflineErr
}
return api.whisper.HasIdentity(identity), nil
return api.whisper.HasKeyPair(id), nil
}
// DeleteIdentity deletes the specifies key if it exists.
func (api *PublicWhisperAPI) DeleteIdentity(identity string) error {
// DeleteKeyPair deletes the specifies key if it exists.
func (api *PublicWhisperAPI) DeleteKeyPair(id string) (bool, error) {
if api.whisper == nil {
return whisperOffLineErr
return false, whisperOfflineErr
}
api.whisper.DeleteIdentity(identity)
return nil
return api.whisper.DeleteKeyPair(id), nil
}
// NewIdentity generates a new cryptographic identity for the client, and injects
// NewKeyPair generates a new cryptographic identity for the client, and injects
// it into the known identities for message decryption.
func (api *PublicWhisperAPI) NewIdentity() (string, error) {
func (api *PublicWhisperAPI) NewKeyPair() (string, error) {
if api.whisper == nil {
return "", whisperOffLineErr
return "", whisperOfflineErr
}
identity := api.whisper.NewIdentity()
return common.ToHex(crypto.FromECDSAPub(&identity.PublicKey)), nil
return api.whisper.NewKeyPair()
}
// GenerateSymKey generates a random symmetric key and stores it under
// the 'name' id. Will be used in the future for session key exchange.
func (api *PublicWhisperAPI) GenerateSymKey(name string) error {
// GetPublicKey returns the public key for identity id
func (api *PublicWhisperAPI) GetPublicKey(id string) (hexutil.Bytes, error) {
if api.whisper == nil {
return whisperOffLineErr
return nil, whisperOfflineErr
}
return api.whisper.GenerateSymKey(name)
key, err := api.whisper.GetPrivateKey(id)
if err != nil {
return nil, err
}
return crypto.FromECDSAPub(&key.PublicKey), nil
}
// AddSymKey stores the key under the 'name' id.
func (api *PublicWhisperAPI) AddSymKey(name string, key hexutil.Bytes) error {
// GetPrivateKey returns the private key for identity id
func (api *PublicWhisperAPI) GetPrivateKey(id string) (string, error) {
if api.whisper == nil {
return whisperOffLineErr
return "", whisperOfflineErr
}
return api.whisper.AddSymKey(name, key)
key, err := api.whisper.GetPrivateKey(id)
if err != nil {
return "", err
}
return common.ToHex(crypto.FromECDSA(key)), nil
}
// HasSymKey returns true if there is a key associated with the name string.
// GenerateSymmetricKey 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 (api *PublicWhisperAPI) GenerateSymmetricKey() (string, error) {
if api.whisper == nil {
return "", whisperOfflineErr
}
return api.whisper.GenerateSymKey()
}
// AddSymmetricKeyDirect stores the key, and returns its id.
func (api *PublicWhisperAPI) AddSymmetricKeyDirect(key hexutil.Bytes) (string, error) {
if api.whisper == nil {
return "", whisperOfflineErr
}
return api.whisper.AddSymKeyDirect(key)
}
// AddSymmetricKeyFromPassword generates the key from password, stores it, and returns its id.
func (api *PublicWhisperAPI) AddSymmetricKeyFromPassword(password string) (string, error) {
if api.whisper == nil {
return "", whisperOfflineErr
}
return api.whisper.AddSymKeyFromPassword(password)
}
// HasSymmetricKey returns true if there is a key associated with the given id.
// Otherwise returns false.
func (api *PublicWhisperAPI) HasSymKey(name string) (bool, error) {
func (api *PublicWhisperAPI) HasSymmetricKey(id string) (bool, error) {
if api.whisper == nil {
return false, whisperOffLineErr
return false, whisperOfflineErr
}
res := api.whisper.HasSymKey(name)
res := api.whisper.HasSymKey(id)
return res, nil
}
// DeleteSymKey deletes the key associated with the name string if it exists.
func (api *PublicWhisperAPI) DeleteSymKey(name string) error {
// GetSymmetricKey returns the symmetric key associated with the given id.
func (api *PublicWhisperAPI) GetSymmetricKey(name string) (hexutil.Bytes, error) {
if api.whisper == nil {
return whisperOffLineErr
return nil, whisperOfflineErr
}
api.whisper.DeleteSymKey(name)
return nil
b, err := api.whisper.GetSymKey(name)
if err != nil {
return nil, err
}
return b, nil
}
// NewWhisperFilter creates and registers a new message filter to watch for inbound whisper messages.
// Returns the ID of the newly created Filter.
func (api *PublicWhisperAPI) NewFilter(args WhisperFilterArgs) (string, error) {
// DeleteSymmetricKey deletes the key associated with the name string if it exists.
func (api *PublicWhisperAPI) DeleteSymmetricKey(name string) (bool, error) {
if api.whisper == nil {
return "", whisperOffLineErr
return false, whisperOfflineErr
}
res := api.whisper.DeleteSymKey(name)
return res, nil
}
// Subscribe creates and registers a new filter to watch for inbound whisper messages.
// Returns the ID of the newly created filter.
func (api *PublicWhisperAPI) Subscribe(args WhisperFilterArgs) (string, error) {
if api.whisper == nil {
return "", whisperOfflineErr
}
filter := Filter{
Src: crypto.ToECDSAPub(common.FromHex(args.From)),
KeySym: api.whisper.GetSymKey(args.KeyName),
PoW: args.PoW,
Messages: make(map[common.Hash]*ReceivedMessage),
AcceptP2P: args.AcceptP2P,
}
if len(filter.KeySym) > 0 {
filter.SymKeyHash = crypto.Keccak256Hash(filter.KeySym)
}
filter.Topics = append(filter.Topics, args.Topics...)
if len(args.Topics) == 0 && len(args.KeyName) != 0 {
info := "NewFilter: at least one topic must be specified"
log.Error(fmt.Sprintf(info))
return "", errors.New(info)
Src: crypto.ToECDSAPub(common.FromHex(args.SignedWith)),
PoW: args.MinPoW,
Messages: make(map[common.Hash]*ReceivedMessage),
AllowP2P: args.AllowP2P,
}
if len(args.KeyName) != 0 && len(filter.KeySym) == 0 {
info := "NewFilter: key was not found by name: " + args.KeyName
log.Error(fmt.Sprintf(info))
return "", errors.New(info)
}
if len(args.To) == 0 && len(filter.KeySym) == 0 {
info := "NewFilter: filter must contain either symmetric or asymmetric key"
log.Error(fmt.Sprintf(info))
return "", errors.New(info)
}
if len(args.To) != 0 && len(filter.KeySym) != 0 {
info := "NewFilter: filter must not contain both symmetric and asymmetric key"
log.Error(fmt.Sprintf(info))
return "", errors.New(info)
}
if len(args.To) > 0 {
dst := crypto.ToECDSAPub(common.FromHex(args.To))
if !ValidatePublicKey(dst) {
info := "NewFilter: Invalid 'To' address"
log.Error(fmt.Sprintf(info))
return "", errors.New(info)
}
filter.KeyAsym = api.whisper.GetIdentity(string(args.To))
if filter.KeyAsym == nil {
info := "NewFilter: non-existent identity provided"
log.Error(fmt.Sprintf(info))
return "", errors.New(info)
var err error
for i, bt := range args.Topics {
if len(bt) == 0 || len(bt) > 4 {
return "", errors.New(fmt.Sprintf("subscribe: topic %d has wrong size: %d", i, len(bt)))
}
filter.Topics = append(filter.Topics, bt)
}
if len(args.From) > 0 {
if err = ValidateKeyID(args.Key); err != nil {
return "", errors.New("subscribe: " + err.Error())
}
if len(args.SignedWith) > 0 {
if !ValidatePublicKey(filter.Src) {
info := "NewFilter: Invalid 'From' address"
log.Error(fmt.Sprintf(info))
return "", errors.New(info)
return "", errors.New("subscribe: invalid 'SignedWith' field")
}
}
return api.whisper.Watch(&filter)
if args.Symmetric {
if len(args.Topics) == 0 {
return "", errors.New("subscribe: at least one topic must be specified with symmetric encryption")
}
symKey, err := api.whisper.GetSymKey(args.Key)
if err != nil {
return "", errors.New("subscribe: invalid key ID")
}
if !validateSymmetricKey(symKey) {
return "", errors.New("subscribe: retrieved key is invalid")
}
filter.KeySym = symKey
filter.SymKeyHash = crypto.Keccak256Hash(filter.KeySym)
} else {
filter.KeyAsym, err = api.whisper.GetPrivateKey(args.Key)
if err != nil {
return "", errors.New("subscribe: invalid key ID")
}
if filter.KeyAsym == nil {
return "", errors.New("subscribe: non-existent identity provided")
}
}
return api.whisper.Subscribe(&filter)
}
// UninstallFilter disables and removes an existing filter.
func (api *PublicWhisperAPI) UninstallFilter(filterId string) {
api.whisper.Unwatch(filterId)
// Unsubscribe disables and removes an existing filter.
func (api *PublicWhisperAPI) Unsubscribe(id string) {
api.whisper.Unsubscribe(id)
}
// GetFilterChanges retrieves all the new messages matched by a filter since the last retrieval.
func (api *PublicWhisperAPI) GetFilterChanges(filterId string) []*WhisperMessage {
// GetSubscriptionMessages retrieves all the new messages matched by a filter since the last retrieval.
func (api *PublicWhisperAPI) GetSubscriptionMessages(filterId string) []*WhisperMessage {
f := api.whisper.GetFilter(filterId)
if f != nil {
newMail := f.Retrieve()
@ -240,7 +279,8 @@ func (api *PublicWhisperAPI) GetFilterChanges(filterId string) []*WhisperMessage
return toWhisperMessages(nil)
}
// GetMessages retrieves all the known messages that match a specific filter.
// GetMessages retrieves all the floating messages that match a specific filter.
// It is likely to be called once per session, right after Subscribe call.
func (api *PublicWhisperAPI) GetMessages(filterId string) []*WhisperMessage {
all := api.whisper.Messages(filterId)
return toWhisperMessages(all)
@ -258,139 +298,107 @@ func toWhisperMessages(messages []*ReceivedMessage) []*WhisperMessage {
// Post creates a whisper message and injects it into the network for distribution.
func (api *PublicWhisperAPI) Post(args PostArgs) error {
if api.whisper == nil {
return whisperOffLineErr
return whisperOfflineErr
}
var err error
params := MessageParams{
TTL: args.TTL,
Dst: crypto.ToECDSAPub(common.FromHex(args.To)),
KeySym: api.whisper.GetSymKey(args.KeyName),
Topic: args.Topic,
WorkTime: args.PowTime,
PoW: args.PowTarget,
Payload: args.Payload,
Padding: args.Padding,
WorkTime: args.WorkTime,
PoW: args.PoW,
}
if len(args.From) > 0 {
pub := crypto.ToECDSAPub(common.FromHex(args.From))
if !ValidatePublicKey(pub) {
info := "Post: Invalid 'From' address"
log.Error(fmt.Sprintf(info))
return errors.New(info)
if len(args.Key) == 0 {
return errors.New("post: key is missing")
}
if len(args.SignWith) > 0 {
params.Src, err = api.whisper.GetPrivateKey(args.SignWith)
if err != nil {
return err
}
params.Src = api.whisper.GetIdentity(string(args.From))
if params.Src == nil {
info := "Post: non-existent identity provided"
log.Error(fmt.Sprintf(info))
return errors.New(info)
return errors.New("post: empty identity")
}
}
filter := api.whisper.GetFilter(args.FilterID)
if filter == nil && len(args.FilterID) > 0 {
info := fmt.Sprintf("Post: wrong filter id %s", args.FilterID)
log.Error(fmt.Sprintf(info))
return errors.New(info)
if len(args.Topic) == TopicLength {
params.Topic = BytesToTopic(args.Topic)
} else if len(args.Topic) != 0 {
return errors.New(fmt.Sprintf("post: wrong topic size %d", len(args.Topic)))
}
if filter != nil {
// get the missing fields from the filter
if params.KeySym == nil && filter.KeySym != nil {
params.KeySym = filter.KeySym
if args.Type == "sym" {
if err = ValidateKeyID(args.Key); err != nil {
return err
}
if params.Src == nil && filter.Src != nil {
params.Src = filter.KeyAsym
params.KeySym, err = api.whisper.GetSymKey(args.Key)
if err != nil {
return err
}
if (params.Topic == TopicType{}) {
sz := len(filter.Topics)
if sz < 1 {
info := fmt.Sprintf("Post: no topics in filter # %s", args.FilterID)
log.Error(fmt.Sprintf(info))
return errors.New(info)
} else if sz == 1 {
params.Topic = filter.Topics[0]
} else {
// choose randomly
rnd := mathrand.Intn(sz)
params.Topic = filter.Topics[rnd]
}
if !validateSymmetricKey(params.KeySym) {
return errors.New("post: key for symmetric encryption is invalid")
}
}
// validate
if len(args.KeyName) != 0 && len(params.KeySym) == 0 {
info := "Post: key was not found by name: " + args.KeyName
log.Error(fmt.Sprintf(info))
return errors.New(info)
}
if len(args.To) == 0 && len(params.KeySym) == 0 {
info := "Post: message must be encrypted either symmetrically or asymmetrically"
log.Error(fmt.Sprintf(info))
return errors.New(info)
}
if len(args.To) != 0 && len(params.KeySym) != 0 {
info := "Post: ambigous encryption method requested"
log.Error(fmt.Sprintf(info))
return errors.New(info)
}
if len(args.To) > 0 {
if len(params.Topic) == 0 {
return errors.New("post: topic is missing for symmetric encryption")
}
} else if args.Type == "asym" {
params.Dst = crypto.ToECDSAPub(common.FromHex(args.Key))
if !ValidatePublicKey(params.Dst) {
info := "Post: Invalid 'To' address"
log.Error(fmt.Sprintf(info))
return errors.New(info)
return errors.New("post: public key for asymmetric encryption is invalid")
}
} else {
return errors.New("post: wrong type (sym/asym)")
}
// encrypt and send
message := NewSentMessage(&params)
if message == nil {
return errors.New("post: failed create new message, probably due to failed rand function (OS level)")
}
envelope, err := message.Wrap(&params)
if err != nil {
log.Error(fmt.Sprintf(err.Error()))
return err
}
if len(envelope.Data) > MaxMessageLength {
info := "Post: message is too big"
log.Error(fmt.Sprintf(info))
return errors.New(info)
}
if (envelope.Topic == TopicType{} && envelope.IsSymmetric()) {
info := "Post: topic is missing for symmetric encryption"
log.Error(fmt.Sprintf(info))
return errors.New(info)
if envelope.size() > api.whisper.maxMsgLength {
return errors.New("post: message is too big")
}
if args.PeerID != nil {
return api.whisper.SendP2PMessage(args.PeerID, envelope)
if len(args.TargetPeer) != 0 {
n, err := discover.ParseNode(args.TargetPeer)
if err != nil {
return errors.New("post: failed to parse enode of target peer: " + err.Error())
}
return api.whisper.SendP2PMessage(n.ID[:], envelope)
} else if args.PowTarget < api.whisper.minPoW {
return errors.New("post: target PoW is less than minimum PoW, the message can not be sent")
}
return api.whisper.Send(envelope)
}
type PostArgs struct {
TTL uint32 `json:"ttl"`
From string `json:"from"`
To string `json:"to"`
KeyName string `json:"keyname"`
Topic TopicType `json:"topic"`
Padding hexutil.Bytes `json:"padding"`
Payload hexutil.Bytes `json:"payload"`
WorkTime uint32 `json:"worktime"`
PoW float64 `json:"pow"`
FilterID string `json:"filterID"`
PeerID hexutil.Bytes `json:"peerID"`
Type string `json:"type"` // "sym"/"asym" (symmetric or asymmetric)
TTL uint32 `json:"ttl"` // time-to-live in seconds
SignWith string `json:"signWith"` // id of the signing key
Key string `json:"key"` // id of encryption key
Topic hexutil.Bytes `json:"topic"` // topic (4 bytes)
Padding hexutil.Bytes `json:"padding"` // optional padding bytes
Payload hexutil.Bytes `json:"payload"` // payload to be encrypted
PowTime uint32 `json:"powTime"` // maximal time in seconds to be spent on PoW
PowTarget float64 `json:"powTarget"` // minimal PoW required for this message
TargetPeer string `json:"targetPeer"` // peer id (for p2p message only)
}
type WhisperFilterArgs struct {
To string `json:"to"`
From string `json:"from"`
KeyName string `json:"keyname"`
PoW float64 `json:"pow"`
Topics []TopicType `json:"topics"`
AcceptP2P bool `json:"p2p"`
Symmetric bool // encryption type
Key string // id of the key to be used for decryption
SignedWith string // public key of the sender to be verified
MinPoW float64 // minimal PoW requirement
Topics [][]byte // list of topics (up to 4 bytes each) to match
AllowP2P bool // indicates wheather direct p2p messages are allowed for this filter
}
// UnmarshalJSON implements the json.Unmarshaler interface, invoked to convert a
@ -398,22 +406,30 @@ type WhisperFilterArgs struct {
func (args *WhisperFilterArgs) UnmarshalJSON(b []byte) (err error) {
// Unmarshal the JSON message and sanity check
var obj struct {
To string `json:"to"`
From string `json:"from"`
KeyName string `json:"keyname"`
PoW float64 `json:"pow"`
Topics []interface{} `json:"topics"`
AcceptP2P bool `json:"p2p"`
Type string `json:"type"`
Key string `json:"key"`
SignedWith string `json:"signedWith"`
MinPoW float64 `json:"minPoW"`
Topics []interface{} `json:"topics"`
AllowP2P bool `json:"allowP2P"`
}
if err := json.Unmarshal(b, &obj); err != nil {
return err
}
args.To = obj.To
args.From = obj.From
args.KeyName = obj.KeyName
args.PoW = obj.PoW
args.AcceptP2P = obj.AcceptP2P
switch obj.Type {
case "sym":
args.Symmetric = true
case "asym":
args.Symmetric = false
default:
return errors.New("wrong type (sym/asym)")
}
args.Key = obj.Key
args.SignedWith = obj.SignedWith
args.MinPoW = obj.MinPoW
args.AllowP2P = obj.AllowP2P
// Construct the topic array
if obj.Topics != nil {
@ -428,13 +444,13 @@ func (args *WhisperFilterArgs) UnmarshalJSON(b []byte) (err error) {
return fmt.Errorf("topic[%d] is not a string", i)
}
}
topicsDecoded := make([]TopicType, len(topics))
topicsDecoded := make([][]byte, len(topics))
for j, s := range topics {
x := common.FromHex(s)
if x == nil || len(x) != TopicLength {
if x == nil || len(x) > TopicLength {
return fmt.Errorf("topic[%d] is invalid", j)
}
topicsDecoded[j] = BytesToTopic(x)
topicsDecoded[j] = x
}
args.Topics = topicsDecoded
}
@ -444,34 +460,34 @@ func (args *WhisperFilterArgs) UnmarshalJSON(b []byte) (err error) {
// WhisperMessage is the RPC representation of a whisper message.
type WhisperMessage struct {
Topic string `json:"topic"`
Payload string `json:"payload"`
Padding string `json:"padding"`
From string `json:"from"`
To string `json:"to"`
Sent uint32 `json:"sent"`
TTL uint32 `json:"ttl"`
PoW float64 `json:"pow"`
Hash string `json:"hash"`
Topic string `json:"topic"`
Payload string `json:"payload"`
Padding string `json:"padding"`
Src string `json:"signedWith"`
Dst string `json:"recipientPublicKey"`
Timestamp uint32 `json:"timestamp"`
TTL uint32 `json:"ttl"`
PoW float64 `json:"pow"`
Hash string `json:"hash"`
}
// NewWhisperMessage converts an internal message into an API version.
func NewWhisperMessage(message *ReceivedMessage) *WhisperMessage {
msg := WhisperMessage{
Topic: common.ToHex(message.Topic[:]),
Payload: common.ToHex(message.Payload),
Padding: common.ToHex(message.Padding),
Sent: message.Sent,
TTL: message.TTL,
PoW: message.PoW,
Hash: common.ToHex(message.EnvelopeHash.Bytes()),
Topic: common.ToHex(message.Topic[:]),
Payload: common.ToHex(message.Payload),
Padding: common.ToHex(message.Padding),
Timestamp: message.Sent,
TTL: message.TTL,
PoW: message.PoW,
Hash: common.ToHex(message.EnvelopeHash.Bytes()),
}
if message.Dst != nil {
msg.To = common.ToHex(crypto.FromECDSAPub(message.Dst))
msg.Dst = common.ToHex(crypto.FromECDSAPub(message.Dst))
}
if isMessageSigned(message.Raw[0]) {
msg.From = common.ToHex(crypto.FromECDSAPub(message.SigToPubKey()))
msg.Src = common.ToHex(crypto.FromECDSAPub(message.SigToPubKey()))
}
return &msg
}

411
whisper/whisperv5/api_test.go
View File

@ -23,6 +23,7 @@ import (
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
)
func TestBasic(t *testing.T) {
@ -42,12 +43,12 @@ func TestBasic(t *testing.T) {
t.Fatalf("wrong version: %d.", ver)
}
mail := api.GetFilterChanges("non-existent-id")
mail := api.GetSubscriptionMessages("non-existent-id")
if len(mail) != 0 {
t.Fatalf("failed GetFilterChanges: premature result")
}
exist, err := api.HasIdentity(id)
exist, err := api.HasKeyPair(id)
if err != nil {
t.Fatalf("failed initial HasIdentity: %s.", err)
}
@ -55,12 +56,15 @@ func TestBasic(t *testing.T) {
t.Fatalf("failed initial HasIdentity: false positive.")
}
err = api.DeleteIdentity(id)
success, err := api.DeleteKeyPair(id)
if err != nil {
t.Fatalf("failed DeleteIdentity: %s.", err)
}
if success {
t.Fatalf("deleted non-existing identity: false positive.")
}
pub, err := api.NewIdentity()
pub, err := api.NewKeyPair()
if err != nil {
t.Fatalf("failed NewIdentity: %s.", err)
}
@ -68,7 +72,7 @@ func TestBasic(t *testing.T) {
t.Fatalf("failed NewIdentity: empty")
}
exist, err = api.HasIdentity(pub)
exist, err = api.HasKeyPair(pub)
if err != nil {
t.Fatalf("failed HasIdentity: %s.", err)
}
@ -76,12 +80,15 @@ func TestBasic(t *testing.T) {
t.Fatalf("failed HasIdentity: false negative.")
}
err = api.DeleteIdentity(pub)
success, err = api.DeleteKeyPair(pub)
if err != nil {
t.Fatalf("failed to delete second identity: %s.", err)
}
if !success {
t.Fatalf("failed to delete second identity.")
}
exist, err = api.HasIdentity(pub)
exist, err = api.HasKeyPair(pub)
if err != nil {
t.Fatalf("failed HasIdentity(): %s.", err)
}
@ -92,7 +99,7 @@ func TestBasic(t *testing.T) {
id = "arbitrary text"
id2 := "another arbitrary string"
exist, err = api.HasSymKey(id)
exist, err = api.HasSymmetricKey(id)
if err != nil {
t.Fatalf("failed HasSymKey: %s.", err)
}
@ -100,12 +107,12 @@ func TestBasic(t *testing.T) {
t.Fatalf("failed HasSymKey: false positive.")
}
err = api.GenerateSymKey(id)
id, err = api.GenerateSymmetricKey()
if err != nil {
t.Fatalf("failed GenerateSymKey: %s.", err)
}
exist, err = api.HasSymKey(id)
exist, err = api.HasSymmetricKey(id)
if err != nil {
t.Fatalf("failed HasSymKey(): %s.", err)
}
@ -113,17 +120,18 @@ func TestBasic(t *testing.T) {
t.Fatalf("failed HasSymKey(): false negative.")
}
err = api.AddSymKey(id, []byte("some stuff here"))
if err == nil {
t.Fatalf("failed AddSymKey: %s.", err)
}
err = api.AddSymKey(id2, []byte("some stuff here"))
const password = "some stuff here"
id, err = api.AddSymmetricKeyFromPassword(password)
if err != nil {
t.Fatalf("failed AddSymKey: %s.", err)
}
exist, err = api.HasSymKey(id2)
id2, err = api.AddSymmetricKeyFromPassword(password)
if err != nil {
t.Fatalf("failed AddSymKey: %s.", err)
}
exist, err = api.HasSymmetricKey(id2)
if err != nil {
t.Fatalf("failed HasSymKey(id2): %s.", err)
}
@ -131,12 +139,28 @@ func TestBasic(t *testing.T) {
t.Fatalf("failed HasSymKey(id2): false negative.")
}
err = api.DeleteSymKey(id)
k1, err := api.GetSymmetricKey(id)
if err != nil {
t.Fatalf("failed GetSymKey(id): %s.", err)
}
k2, err := api.GetSymmetricKey(id2)
if err != nil {
t.Fatalf("failed GetSymKey(id2): %s.", err)
}
if !bytes.Equal(k1, k2) {
t.Fatalf("installed keys are not equal")
}
exist, err = api.DeleteSymmetricKey(id)
if err != nil {
t.Fatalf("failed DeleteSymKey(id): %s.", err)
}
if !exist {
t.Fatalf("failed DeleteSymKey(id): false negative.")
}
exist, err = api.HasSymKey(id)
exist, err = api.HasSymmetricKey(id)
if err != nil {
t.Fatalf("failed HasSymKey(id): %s.", err)
}
@ -147,12 +171,12 @@ func TestBasic(t *testing.T) {
func TestUnmarshalFilterArgs(t *testing.T) {
s := []byte(`{
"to":"0x70c87d191324e6712a591f304b4eedef6ad9bb9d",
"from":"0x9b2055d370f73ec7d8a03e965129118dc8f5bf83",
"keyname":"testname",
"pow":2.34,
"type":"sym",
"key":"0x70c87d191324e6712a591f304b4eedef6ad9bb9d",
"signedWith":"0x9b2055d370f73ec7d8a03e965129118dc8f5bf83",
"minPoW":2.34,
"topics":["0x00000000", "0x007f80ff", "0xff807f00", "0xf26e7779"],
"p2p":true
"allowP2P":true
}`)
var f WhisperFilterArgs
@ -161,59 +185,58 @@ func TestUnmarshalFilterArgs(t *testing.T) {
t.Fatalf("failed UnmarshalJSON: %s.", err)
}
if f.To != "0x70c87d191324e6712a591f304b4eedef6ad9bb9d" {
t.Fatalf("wrong To: %x.", f.To)
if !f.Symmetric {
t.Fatalf("wrong type.")
}
if f.From != "0x9b2055d370f73ec7d8a03e965129118dc8f5bf83" {
t.Fatalf("wrong From: %x.", f.To)
if f.Key != "0x70c87d191324e6712a591f304b4eedef6ad9bb9d" {
t.Fatalf("wrong key: %s.", f.Key)
}
if f.KeyName != "testname" {
t.Fatalf("wrong KeyName: %s.", f.KeyName)
if f.SignedWith != "0x9b2055d370f73ec7d8a03e965129118dc8f5bf83" {
t.Fatalf("wrong SignedWith: %s.", f.SignedWith)
}
if f.PoW != 2.34 {
t.Fatalf("wrong pow: %f.", f.PoW)
if f.MinPoW != 2.34 {
t.Fatalf("wrong MinPoW: %f.", f.MinPoW)
}
if !f.AcceptP2P {
t.Fatalf("wrong AcceptP2P: %v.", f.AcceptP2P)
if !f.AllowP2P {
t.Fatalf("wrong AllowP2P.")
}
if len(f.Topics) != 4 {
t.Fatalf("wrong topics number: %d.", len(f.Topics))
}
i := 0
if f.Topics[i] != (TopicType{0x00, 0x00, 0x00, 0x00}) {
if !bytes.Equal(f.Topics[i], []byte{0x00, 0x00, 0x00, 0x00}) {
t.Fatalf("wrong topic[%d]: %x.", i, f.Topics[i])
}
i++
if f.Topics[i] != (TopicType{0x00, 0x7f, 0x80, 0xff}) {
if !bytes.Equal(f.Topics[i], []byte{0x00, 0x7f, 0x80, 0xff}) {
t.Fatalf("wrong topic[%d]: %x.", i, f.Topics[i])
}
i++
if f.Topics[i] != (TopicType{0xff, 0x80, 0x7f, 0x00}) {
if !bytes.Equal(f.Topics[i], []byte{0xff, 0x80, 0x7f, 0x00}) {
t.Fatalf("wrong topic[%d]: %x.", i, f.Topics[i])
}
i++
if f.Topics[i] != (TopicType{0xf2, 0x6e, 0x77, 0x79}) {
if !bytes.Equal(f.Topics[i], []byte{0xf2, 0x6e, 0x77, 0x79}) {
t.Fatalf("wrong topic[%d]: %x.", i, f.Topics[i])
}
}
func TestUnmarshalPostArgs(t *testing.T) {
s := []byte(`{
"type":"sym",
"ttl":12345,
"from":"0x70c87d191324e6712a591f304b4eedef6ad9bb9d",
"to":"0x9b2055d370f73ec7d8a03e965129118dc8f5bf83",
"keyname":"shh_test",
"signWith":"0x70c87d191324e6712a591f304b4eedef6ad9bb9d",
"key":"0x9b2055d370f73ec7d8a03e965129118dc8f5bf83",
"topic":"0xf26e7779",
"padding":"0x74686973206973206D79207465737420737472696E67",
"payload":"0x7061796C6F61642073686F756C642062652070736575646F72616E646F6D",
"worktime":777,
"pow":3.1416,
"filterid":"test-filter-id",
"peerid":"0xf26e7779"
"powTime":777,
"powTarget":3.1416,
"targetPeer":"enode://915533f667b1369793ebb9bda022416b1295235a1420799cd87a969467372546d808ebf59c5c9ce23f103d59b61b97df8af91f0908552485975397181b993461@127.0.0.1:12345"
}`)
var a PostArgs
@ -222,19 +245,20 @@ func TestUnmarshalPostArgs(t *testing.T) {
t.Fatalf("failed UnmarshalJSON: %s.", err)
}
if a.Type != "sym" {
t.Fatalf("wrong Type: %s.", a.Type)
}
if a.TTL != 12345 {
t.Fatalf("wrong ttl: %d.", a.TTL)
}
if a.From != "0x70c87d191324e6712a591f304b4eedef6ad9bb9d" {
t.Fatalf("wrong From: %x.", a.To)
if a.SignWith != "0x70c87d191324e6712a591f304b4eedef6ad9bb9d" {
t.Fatalf("wrong From: %s.", a.SignWith)
}
if a.To != "0x9b2055d370f73ec7d8a03e965129118dc8f5bf83" {
t.Fatalf("wrong To: %x.", a.To)
if a.Key != "0x9b2055d370f73ec7d8a03e965129118dc8f5bf83" {
t.Fatalf("wrong Key: %s.", a.Key)
}
if a.KeyName != "shh_test" {
t.Fatalf("wrong KeyName: %s.", a.KeyName)
}
if a.Topic != (TopicType{0xf2, 0x6e, 0x77, 0x79}) {
if BytesToTopic(a.Topic) != (TopicType{0xf2, 0x6e, 0x77, 0x79}) {
t.Fatalf("wrong topic: %x.", a.Topic)
}
if string(a.Padding) != "this is my test string" {
@ -243,31 +267,34 @@ func TestUnmarshalPostArgs(t *testing.T) {
if string(a.Payload) != "payload should be pseudorandom" {
t.Fatalf("wrong Payload: %s.", string(a.Payload))
}
if a.WorkTime != 777 {
t.Fatalf("wrong WorkTime: %d.", a.WorkTime)
if a.PowTime != 777 {
t.Fatalf("wrong PowTime: %d.", a.PowTime)
}
if a.PoW != 3.1416 {
t.Fatalf("wrong pow: %f.", a.PoW)
if a.PowTarget != 3.1416 {
t.Fatalf("wrong PowTarget: %f.", a.PowTarget)
}
if a.FilterID != "test-filter-id" {
t.Fatalf("wrong FilterID: %s.", a.FilterID)
}
if !bytes.Equal(a.PeerID[:], a.Topic[:]) {
t.Fatalf("wrong PeerID: %x.", a.PeerID)
if a.TargetPeer != "enode://915533f667b1369793ebb9bda022416b1295235a1420799cd87a969467372546d808ebf59c5c9ce23f103d59b61b97df8af91f0908552485975397181b993461@127.0.0.1:12345" {
t.Fatalf("wrong PeerID: %s.", a.TargetPeer)
}
}
func waitForMessage(api *PublicWhisperAPI, id string, target int) bool {
for i := 0; i < 64; i++ {
all := api.GetMessages(id)
if len(all) >= target {
return true
func waitForMessages(api *PublicWhisperAPI, id string, target int) []*WhisperMessage {
// timeout: 2 seconds
result := make([]*WhisperMessage, 0, target)
for i := 0; i < 100; i++ {
mail := api.GetSubscriptionMessages(id)
if len(mail) > 0 {
for _, m := range mail {
result = append(result, m)
}
if len(result) >= target {
break
}
}
time.Sleep(time.Millisecond * 16)
time.Sleep(time.Millisecond * 20)
}
// timeout 1024 milliseconds
return false
return result
}
func TestIntegrationAsym(t *testing.T) {
@ -280,7 +307,7 @@ func TestIntegrationAsym(t *testing.T) {
api.Start()
defer api.Stop()
sig, err := api.NewIdentity()
sig, err := api.NewKeyPair()
if err != nil {
t.Fatalf("failed NewIdentity: %s.", err)
}
@ -288,7 +315,7 @@ func TestIntegrationAsym(t *testing.T) {
t.Fatalf("wrong signature")
}
exist, err := api.HasIdentity(sig)
exist, err := api.HasKeyPair(sig)
if err != nil {
t.Fatalf("failed HasIdentity: %s.", err)
}
@ -296,7 +323,12 @@ func TestIntegrationAsym(t *testing.T) {
t.Fatalf("failed HasIdentity: false negative.")
}
key, err := api.NewIdentity()
sigPubKey, err := api.GetPublicKey(sig)
if err != nil {
t.Fatalf("failed GetPublicKey: %s.", err)
}
key, err := api.NewKeyPair()
if err != nil {
t.Fatalf("failed NewIdentity(): %s.", err)
}
@ -304,42 +336,46 @@ func TestIntegrationAsym(t *testing.T) {
t.Fatalf("wrong key")
}
dstPubKey, err := api.GetPublicKey(key)
if err != nil {
t.Fatalf("failed GetPublicKey: %s.", err)
}
var topics [2]TopicType
topics[0] = TopicType{0x00, 0x64, 0x00, 0xff}
topics[1] = TopicType{0xf2, 0x6e, 0x77, 0x79}
var f WhisperFilterArgs
f.To = key
f.From = sig
f.Topics = topics[:]
f.PoW = MinimumPoW / 2
f.AcceptP2P = true
f.Symmetric = false
f.Key = key
f.SignedWith = sigPubKey.String()
f.Topics = make([][]byte, 2)
f.Topics[0] = topics[0][:]
f.Topics[1] = topics[1][:]
f.MinPoW = DefaultMinimumPoW / 2
f.AllowP2P = true
id, err := api.NewFilter(f)
id, err := api.Subscribe(f)
if err != nil {
t.Fatalf("failed to create new filter: %s.", err)
}
var p PostArgs
p.Type = "asym"
p.TTL = 2
p.From = f.From
p.To = f.To
p.SignWith = sig
p.Key = dstPubKey.String()
p.Padding = []byte("test string")
p.Payload = []byte("extended test string")
p.PoW = MinimumPoW
p.Topic = TopicType{0xf2, 0x6e, 0x77, 0x79}
p.WorkTime = 2
p.PowTarget = DefaultMinimumPoW
p.PowTime = 2
p.Topic = hexutil.Bytes{0xf2, 0x6e, 0x77, 0x79} // topics[1]
err = api.Post(p)
if err != nil {
t.Errorf("failed to post message: %s.", err)
}
ok := waitForMessage(api, id, 1)
if !ok {
t.Fatalf("failed to receive first message: timeout.")
}
mail := api.GetFilterChanges(id)
mail := waitForMessages(api, id, 1)
if len(mail) != 1 {
t.Fatalf("failed to GetFilterChanges: got %d messages.", len(mail))
}
@ -356,12 +392,7 @@ func TestIntegrationAsym(t *testing.T) {
t.Fatalf("failed to post next message: %s.", err)
}
ok = waitForMessage(api, id, 2)
if !ok {
t.Fatalf("failed to receive second message: timeout.")
}
mail = api.GetFilterChanges(id)
mail = waitForMessages(api, id, 1)
if len(mail) != 1 {
t.Fatalf("failed to GetFilterChanges: got %d messages.", len(mail))
}
@ -382,21 +413,25 @@ func TestIntegrationSym(t *testing.T) {
api.Start()
defer api.Stop()
keyname := "schluessel"
err := api.GenerateSymKey(keyname)
symKeyID, err := api.GenerateSymmetricKey()
if err != nil {
t.Fatalf("failed GenerateSymKey: %s.", err)
}
sig, err := api.NewIdentity()
sig, err := api.NewKeyPair()
if err != nil {
t.Fatalf("failed NewIdentity: %s.", err)
t.Fatalf("failed NewKeyPair: %s.", err)
}
if len(sig) == 0 {
t.Fatalf("wrong signature")
}
exist, err := api.HasIdentity(sig)
sigPubKey, err := api.GetPublicKey(sig)
if err != nil {
t.Fatalf("failed GetPublicKey: %s.", err)
}
exist, err := api.HasKeyPair(sig)
if err != nil {
t.Fatalf("failed HasIdentity: %s.", err)
}
@ -408,38 +443,37 @@ func TestIntegrationSym(t *testing.T) {
topics[0] = TopicType{0x00, 0x7f, 0x80, 0xff}
topics[1] = TopicType{0xf2, 0x6e, 0x77, 0x79}
var f WhisperFilterArgs
f.KeyName = keyname
f.Topics = topics[:]
f.PoW = 0.324
f.From = sig
f.AcceptP2P = false
f.Symmetric = true
f.Key = symKeyID
f.Topics = make([][]byte, 2)
f.Topics[0] = topics[0][:]
f.Topics[1] = topics[1][:]
f.MinPoW = 0.324
f.SignedWith = sigPubKey.String()
f.AllowP2P = false
id, err := api.NewFilter(f)
id, err := api.Subscribe(f)
if err != nil {
t.Fatalf("failed to create new filter: %s.", err)
}
var p PostArgs
p.Type = "sym"
p.TTL = 1
p.KeyName = keyname
p.From = f.From
p.Key = symKeyID
p.SignWith = sig
p.Padding = []byte("test string")
p.Payload = []byte("extended test string")
p.PoW = MinimumPoW
p.Topic = TopicType{0xf2, 0x6e, 0x77, 0x79}
p.WorkTime = 2
p.PowTarget = DefaultMinimumPoW
p.PowTime = 2
p.Topic = hexutil.Bytes{0xf2, 0x6e, 0x77, 0x79}
err = api.Post(p)
if err != nil {
t.Fatalf("failed to post first message: %s.", err)
}
ok := waitForMessage(api, id, 1)
if !ok {
t.Fatalf("failed to receive first message: timeout.")
}
mail := api.GetFilterChanges(id)
mail := waitForMessages(api, id, 1)
if len(mail) != 1 {
t.Fatalf("failed GetFilterChanges: got %d messages.", len(mail))
}
@ -456,12 +490,7 @@ func TestIntegrationSym(t *testing.T) {
t.Fatalf("failed to post second message: %s.", err)
}
ok = waitForMessage(api, id, 2)
if !ok {
t.Fatalf("failed to receive second message: timeout.")
}
mail = api.GetFilterChanges(id)
mail = waitForMessages(api, id, 1)
if len(mail) != 1 {
t.Fatalf("failed second GetFilterChanges: got %d messages.", len(mail))
}
@ -482,21 +511,20 @@ func TestIntegrationSymWithFilter(t *testing.T) {
api.Start()
defer api.Stop()
keyname := "schluessel"
err := api.GenerateSymKey(keyname)
symKeyID, err := api.GenerateSymmetricKey()
if err != nil {
t.Fatalf("failed to GenerateSymKey: %s.", err)
}
sig, err := api.NewIdentity()
sigKeyID, err := api.NewKeyPair()
if err != nil {
t.Fatalf("failed NewIdentity: %s.", err)
}
if len(sig) == 0 {
if len(sigKeyID) == 0 {
t.Fatalf("wrong signature.")
}
exist, err := api.HasIdentity(sig)
exist, err := api.HasKeyPair(sigKeyID)
if err != nil {
t.Fatalf("failed HasIdentity: %s.", err)
}
@ -504,42 +532,46 @@ func TestIntegrationSymWithFilter(t *testing.T) {
t.Fatalf("failed HasIdentity: does not exist.")
}
sigPubKey, err := api.GetPublicKey(sigKeyID)
if err != nil {
t.Fatalf("failed GetPublicKey: %s.", err)
}
var topics [2]TopicType
topics[0] = TopicType{0x00, 0x7f, 0x80, 0xff}
topics[1] = TopicType{0xf2, 0x6e, 0x77, 0x79}
var f WhisperFilterArgs
f.KeyName = keyname
f.Topics = topics[:]
f.PoW = 0.324
f.From = sig
f.AcceptP2P = false
f.Symmetric = true
f.Key = symKeyID
f.Topics = make([][]byte, 2)
f.Topics[0] = topics[0][:]
f.Topics[1] = topics[1][:]
f.MinPoW = 0.324
f.SignedWith = sigPubKey.String()
f.AllowP2P = false
id, err := api.NewFilter(f)
id, err := api.Subscribe(f)
if err != nil {
t.Fatalf("failed to create new filter: %s.", err)
}
var p PostArgs
p.Type = "sym"
p.TTL = 1
p.FilterID = id
p.From = sig
p.Key = symKeyID
p.SignWith = sigKeyID
p.Padding = []byte("test string")
p.Payload = []byte("extended test string")
p.PoW = MinimumPoW
p.Topic = TopicType{0xf2, 0x6e, 0x77, 0x79}
p.WorkTime = 2
p.PowTarget = DefaultMinimumPoW
p.PowTime = 2
p.Topic = hexutil.Bytes{0xf2, 0x6e, 0x77, 0x79}
err = api.Post(p)
if err != nil {
t.Fatalf("failed to post message: %s.", err)
}
ok := waitForMessage(api, id, 1)
if !ok {
t.Fatalf("failed to receive first message: timeout.")
}
mail := api.GetFilterChanges(id)
mail := waitForMessages(api, id, 1)
if len(mail) != 1 {
t.Fatalf("failed to GetFilterChanges: got %d messages.", len(mail))
}
@ -556,12 +588,7 @@ func TestIntegrationSymWithFilter(t *testing.T) {
t.Fatalf("failed to post next message: %s.", err)
}
ok = waitForMessage(api, id, 2)
if !ok {
t.Fatalf("failed to receive second message: timeout.")
}
mail = api.GetFilterChanges(id)
mail = waitForMessages(api, id, 1)
if len(mail) != 1 {
t.Fatalf("failed to GetFilterChanges: got %d messages.", len(mail))
}
@ -571,3 +598,83 @@ func TestIntegrationSymWithFilter(t *testing.T) {
t.Fatalf("failed to decrypt second message: %s.", text)
}
}
func TestKey(t *testing.T) {
w := New()
api := NewPublicWhisperAPI(w)
if api == nil {
t.Fatalf("failed to create API.")
}
k, err := api.AddSymmetricKeyFromPassword("wwww")
if err != nil {
t.Fatalf("failed to create key: %s.", err)
}
s, err := api.GetSymmetricKey(k)
if err != nil {
t.Fatalf("failed to get sym key: %s.", err)
}
k2, err := api.AddSymmetricKeyDirect(s)
if err != nil {
t.Fatalf("failed to add sym key: %s.", err)
}
s2, err := api.GetSymmetricKey(k2)
if err != nil {
t.Fatalf("failed to get sym key: %s.", err)
}
if s.String() != "0x448652d595bd6ec00b2a9ea220ad6c26592d9bf4cf79023d3c1b30cb681e6e07" {
t.Fatalf("wrong key from password: %s", s.String())
}
if !bytes.Equal(s, s2) {
t.Fatalf("wrong key")
}
}
func TestSubscribe(t *testing.T) {
var err error
var s string
w := New()
api := NewPublicWhisperAPI(w)
if api == nil {
t.Fatalf("failed to create API.")
}
symKeyID, err := api.GenerateSymmetricKey()
if err != nil {
t.Fatalf("failed to GenerateSymKey: %s.", err)
}
var f WhisperFilterArgs
f.Symmetric = true
f.Key = symKeyID
f.Topics = make([][]byte, 5)
f.Topics[0] = []byte{0x21}
f.Topics[1] = []byte{0xd2, 0xe3}
f.Topics[2] = []byte{0x64, 0x75, 0x76}
f.Topics[3] = []byte{0xf8, 0xe9, 0xa0, 0xba}
f.Topics[4] = []byte{0xcb, 0x3c, 0xdd, 0xee, 0xff}
s, err = api.Subscribe(f)
if err == nil {
t.Fatalf("Subscribe: false positive.")
}
f.Topics[4] = []byte{}
if err == nil {
t.Fatalf("Subscribe: false positive again.")
}
f.Topics[4] = []byte{0x00}
s, err = api.Subscribe(f)
if err != nil {
t.Fatalf("failed to subscribe: %s.", err)
} else {
api.Unsubscribe(s)
}
}

5
whisper/whisperv5/doc.go
View File

@ -54,9 +54,10 @@ const (
aesKeyLength = 32
saltLength = 12
AESNonceMaxLength = 12
keyIdSize = 32
MaxMessageLength = 0x0FFFFF // todo: remove this restriction after testing. this should be regulated by PoW.
MinimumPoW = 10.0 // todo: review after testing.
DefaultMaxMessageLength = 1024 * 1024
DefaultMinimumPoW = 1.0 // todo: review after testing.
padSizeLimitLower = 128 // it can not be less - we don't want to reveal the absence of signature
padSizeLimitUpper = 256 // just an arbitrary number, could be changed without losing compatibility

8
whisper/whisperv5/envelope.go
View File

@ -21,7 +21,6 @@ package whisperv5
import (
"crypto/ecdsa"
"encoding/binary"
"errors"
"fmt"
gmath "math"
"math/big"
@ -83,7 +82,7 @@ func (e *Envelope) isAsymmetric() bool {
}
func (e *Envelope) Ver() uint64 {
return bytesToIntLittleEndian(e.Version)
return bytesToUintLittleEndian(e.Version)
}
// Seal closes the envelope by spending the requested amount of time as a proof
@ -95,6 +94,9 @@ func (e *Envelope) Seal(options *MessageParams) error {
e.Expiry += options.WorkTime
} else {
target = e.powToFirstBit(options.PoW)
if target < 1 {
target = 1
}
}
buf := make([]byte, 64)
@ -118,7 +120,7 @@ func (e *Envelope) Seal(options *MessageParams) error {
}
if target > 0 && bestBit < target {
return errors.New("Failed to reach the PoW target, insufficient work time")
return fmt.Errorf("failed to reach the PoW target, specified pow time (%d seconds) was insufficient", options.WorkTime)
}
return nil

99
whisper/whisperv5/filter.go
View File

@ -18,7 +18,6 @@ package whisperv5
import (
"crypto/ecdsa"
crand "crypto/rand"
"fmt"
"sync"
@ -30,9 +29,9 @@ 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 []TopicType // Topics to filter messages with
Topics [][]byte // Topics to filter messages with
PoW float64 // Proof of work as described in the Whisper spec
AcceptP2P bool // Indicates whether this filter is interested in direct peer-to-peer messages
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
Messages map[common.Hash]*ReceivedMessage
@ -52,47 +51,35 @@ func NewFilters(w *Whisper) *Filters {
}
}
func (fs *Filters) generateRandomID() (id string, err error) {
buf := make([]byte, 20)
for i := 0; i < 3; i++ {
_, err = crand.Read(buf)
if err != nil {
continue
}
if !validateSymmetricKey(buf) {
err = fmt.Errorf("error in generateRandomID: crypto/rand failed to generate random data")
continue
}
id = common.Bytes2Hex(buf)
if fs.watchers[id] != nil {
err = fmt.Errorf("error in generateRandomID: generated same ID twice")
continue
}
return id, err
}
return "", err
}
func (fs *Filters) Install(watcher *Filter) (string, error) {
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()
id, err := fs.generateRandomID()
if err == nil {
fs.watchers[id] = watcher
if fs.watchers[id] != nil {
return "", fmt.Errorf("failed to generate unique ID")
}
fs.watchers[id] = watcher
return id, err
}
func (fs *Filters) Uninstall(id string) {
func (fs *Filters) Uninstall(id string) bool {
fs.mutex.Lock()
defer fs.mutex.Unlock()
delete(fs.watchers, id)
if fs.watchers[id] != nil {
delete(fs.watchers, id)
return true
}
return false
}
func (fs *Filters) Get(id string) *Filter {
@ -102,11 +89,16 @@ func (fs *Filters) Get(id string) *Filter {
}
func (fs *Filters) NotifyWatchers(env *Envelope, p2pMessage bool) {
fs.mutex.RLock()
var msg *ReceivedMessage
for j, watcher := range fs.watchers {
if p2pMessage && !watcher.AcceptP2P {
log.Trace(fmt.Sprintf("msg [%x], filter [%s]: p2p messages are not allowed", env.Hash(), j))
fs.mutex.RLock()
defer fs.mutex.RUnlock()
i := -1 // only used for logging info
for _, watcher := range fs.watchers {
i++
if p2pMessage && !watcher.AllowP2P {
log.Trace(fmt.Sprintf("msg [%x], filter [%d]: p2p messages are not allowed", env.Hash(), i))
continue
}
@ -118,22 +110,32 @@ func (fs *Filters) NotifyWatchers(env *Envelope, p2pMessage bool) {
if match {
msg = env.Open(watcher)
if msg == nil {
log.Trace(fmt.Sprintf("msg [%x], filter [%s]: failed to open", env.Hash(), j))
log.Trace("processing message: failed to open", "message", env.Hash().Hex(), "filter", i)
}
} else {
log.Trace(fmt.Sprintf("msg [%x], filter [%s]: does not match", env.Hash(), j))
log.Trace("processing message: does not match", "message", env.Hash().Hex(), "filter", i)
}
}
if match && msg != nil {
log.Trace("processing message: decrypted", "hash", env.Hash().Hex())
watcher.Trigger(msg)
}
}
fs.mutex.RUnlock() // we need to unlock before calling addDecryptedMessage
}
if msg != nil {
fs.whisper.addDecryptedMessage(msg)
func (f *Filter) processEnvelope(env *Envelope) *ReceivedMessage {
if f.MatchEnvelope(env) {
msg := env.Open(f)
if msg != nil {
return msg
} else {
log.Trace("processing envelope: failed to open", "hash", env.Hash().Hex())
}
} else {
log.Trace("processing envelope: does not match", "hash", env.Hash().Hex())
}
return nil
}
func (f *Filter) expectsAsymmetricEncryption() bool {
@ -200,20 +202,33 @@ func (f *Filter) MatchTopic(topic TopicType) bool {
return true
}
for _, t := range f.Topics {
if t == topic {
for _, bt := range f.Topics {
if matchSingleTopic(topic, bt) {
return true
}
}
return false
}
func matchSingleTopic(topic TopicType, bt []byte) bool {
if len(bt) > 4 {
bt = bt[:4]
}
for j, b := range bt {
if topic[j] != b {
return false
}
}
return true
}
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
// the curve is always the same, just compare the points
return a.X.Cmp(b.X) == 0 && a.Y.Cmp(b.Y) == 0
}

56
whisper/whisperv5/filter_test.go
View File

@ -53,8 +53,9 @@ func generateFilter(t *testing.T, symmetric bool) (*Filter, error) {
f.Messages = make(map[common.Hash]*ReceivedMessage)
const topicNum = 8
f.Topics = make([]TopicType, topicNum)
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
}
@ -108,7 +109,7 @@ func TestInstallFilters(t *testing.T) {
t.Fatalf("seed %d: failed to install filter: %s", seed, err)
}
tst[i].id = j
if len(j) != 40 {
if len(j) != keyIdSize*2 {
t.Fatalf("seed %d: wrong filter id size [%d]", seed, len(j))
}
}
@ -194,8 +195,8 @@ func TestMatchEnvelope(t *testing.T) {
// encrypt symmetrically
i := mrand.Int() % 4
fsym.Topics[i] = params.Topic
fasym.Topics[i] = params.Topic
fsym.Topics[i] = params.Topic[:]
fasym.Topics[i] = params.Topic[:]
msg = NewSentMessage(params)
env, err = msg.Wrap(params)
if err != nil {
@ -320,7 +321,7 @@ func TestMatchMessageSym(t *testing.T) {
const index = 1
params.KeySym = f.KeySym
params.Topic = f.Topics[index]
params.Topic = BytesToTopic(f.Topics[index])
sentMessage := NewSentMessage(params)
env, err := sentMessage.Wrap(params)
@ -413,7 +414,7 @@ func TestMatchMessageAsym(t *testing.T) {
}
const index = 1
params.Topic = f.Topics[index]
params.Topic = BytesToTopic(f.Topics[index])
params.Dst = &f.KeyAsym.PublicKey
keySymOrig := params.KeySym
params.KeySym = nil
@ -491,7 +492,7 @@ func cloneFilter(orig *Filter) *Filter {
clone.KeySym = orig.KeySym
clone.Topics = orig.Topics
clone.PoW = orig.PoW
clone.AcceptP2P = orig.AcceptP2P
clone.AllowP2P = orig.AllowP2P
clone.SymKeyHash = orig.SymKeyHash
return &clone
}
@ -504,7 +505,7 @@ func generateCompatibeEnvelope(t *testing.T, f *Filter) *Envelope {
}
params.KeySym = f.KeySym
params.Topic = f.Topics[2]
params.Topic = BytesToTopic(f.Topics[2])
sentMessage := NewSentMessage(params)
env, err := sentMessage.Wrap(params)
if err != nil {
@ -655,7 +656,7 @@ func TestWatchers(t *testing.T) {
if f == nil {
t.Fatalf("failed to get the filter with seed %d.", seed)
}
f.AcceptP2P = true
f.AllowP2P = true
total = 0
filters.NotifyWatchers(envelopes[0], true)
@ -668,3 +669,40 @@ func TestWatchers(t *testing.T) {
t.Fatalf("failed with seed %d: total: got %d, want 1.", seed, total)
}
}
func TestVariableTopics(t *testing.T) {
InitSingleTest()
var match bool
params, err := generateMessageParams()
if err != nil {
t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
}
msg := NewSentMessage(params)
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++ {
arr := make([]byte, i+1, 4)
copy(arr, env.Topic[:i+1])
f.Topics[4] = arr
match = f.MatchEnvelope(env)
if !match {
t.Fatalf("failed MatchEnvelope symmetric with seed %d, step %d.", seed, i)
}
f.Topics[4][i]++
match = f.MatchEnvelope(env)
if match {
t.Fatalf("MatchEnvelope symmetric with seed %d, step %d: false positive.", seed, i)
}
}
}

47
whisper/whisperv5/message.go
View File

@ -25,8 +25,6 @@ import (
crand "crypto/rand"
"crypto/sha256"
"errors"
"fmt"
mrand "math/rand"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
@ -102,14 +100,18 @@ func NewSentMessage(params *MessageParams) *SentMessage {
msg := SentMessage{}
msg.Raw = make([]byte, 1, len(params.Payload)+len(params.Payload)+signatureLength+padSizeLimitUpper)
msg.Raw[0] = 0 // set all the flags to zero
msg.appendPadding(params)
err := msg.appendPadding(params)
if err != nil {
log.Error("failed to create NewSentMessage", "err", err)
return nil
}
msg.Raw = append(msg.Raw, params.Payload...)
return &msg
}
// appendPadding appends the pseudorandom padding bytes and sets the padding flag.
// The last byte contains the size of padding (thus, its size must not exceed 256).
func (msg *SentMessage) appendPadding(params *MessageParams) {
func (msg *SentMessage) appendPadding(params *MessageParams) error {
total := len(params.Payload) + 1
if params.Src != nil {
total += signatureLength
@ -128,7 +130,10 @@ func (msg *SentMessage) appendPadding(params *MessageParams) {
panic("please fix the padding algorithm before releasing new version")
}
buf := make([]byte, padSize)
mrand.Read(buf[1:])
_, err := crand.Read(buf[1:])
if err != nil {
return err
}
buf[0] = byte(padSize)
if params.Padding != nil {
copy(buf[1:], params.Padding)
@ -136,6 +141,7 @@ func (msg *SentMessage) appendPadding(params *MessageParams) {
msg.Raw = append(msg.Raw, buf...)
msg.Raw[0] |= byte(0x1) // number of bytes indicating the padding size
}
return nil
}
// sign calculates and sets the cryptographic signature for the message,
@ -143,7 +149,7 @@ func (msg *SentMessage) appendPadding(params *MessageParams) {
func (msg *SentMessage) sign(key *ecdsa.PrivateKey) error {
if isMessageSigned(msg.Raw[0]) {
// this should not happen, but no reason to panic
log.Error(fmt.Sprintf("Trying to sign a message which was already signed"))
log.Error("failed to sign the message: already signed")
return nil
}
@ -161,7 +167,7 @@ func (msg *SentMessage) sign(key *ecdsa.PrivateKey) error {
// encryptAsymmetric encrypts a message with a public key.
func (msg *SentMessage) encryptAsymmetric(key *ecdsa.PublicKey) error {
if !ValidatePublicKey(key) {
return fmt.Errorf("Invalid public key provided for asymmetric encryption")
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 {
@ -215,17 +221,6 @@ func (msg *SentMessage) encryptSymmetric(key []byte) (salt []byte, nonce []byte,
}
// Wrap bundles the message into an Envelope to transmit over the network.
//
// pow (Proof Of Work) controls how much time to spend on hashing the message,
// inherently controlling its priority through the network (smaller hash, bigger
// priority).
//
// The user can control the amount of identity, privacy and encryption through
// the options parameter as follows:
// - options.From == nil && options.To == nil: anonymous broadcast
// - options.From != nil && options.To == nil: signed broadcast (known sender)
// - options.From == nil && options.To != nil: encrypted anonymous message
// - options.From != nil && options.To != nil: encrypted signed message
func (msg *SentMessage) Wrap(options *MessageParams) (envelope *Envelope, err error) {
if options.TTL == 0 {
options.TTL = DefaultTTL
@ -236,17 +231,13 @@ func (msg *SentMessage) Wrap(options *MessageParams) (envelope *Envelope, err er
return nil, err
}
}
if len(msg.Raw) > MaxMessageLength {
log.Error(fmt.Sprintf("Message size must not exceed %d bytes", MaxMessageLength))
return nil, errors.New("Oversized message")
}
var salt, nonce []byte
if options.Dst != nil {
err = msg.encryptAsymmetric(options.Dst)
} else if options.KeySym != nil {
salt, nonce, err = msg.encryptSymmetric(options.KeySym)
} else {
err = errors.New("Unable to encrypt the message: neither Dst nor Key")
err = errors.New("unable to encrypt the message: neither symmetric nor assymmetric key provided")
}
if err != nil {
@ -258,7 +249,6 @@ func (msg *SentMessage) Wrap(options *MessageParams) (envelope *Envelope, err er
if err != nil {
return nil, err
}
return envelope, nil
}
@ -279,9 +269,8 @@ func (msg *ReceivedMessage) decryptSymmetric(key []byte, salt []byte, nonce []by
return err
}
if len(nonce) != aesgcm.NonceSize() {
info := fmt.Sprintf("Wrong AES nonce size - want: %d, got: %d", len(nonce), aesgcm.NonceSize())
log.Error(fmt.Sprintf(info))
return errors.New(info)
log.Error("decrypting the message", "AES nonce size", len(nonce))
return errors.New("wrong AES nonce size")
}
decrypted, err := aesgcm.Open(nil, nonce, msg.Raw, nil)
if err != nil {
@ -336,7 +325,7 @@ func (msg *ReceivedMessage) extractPadding(end int) (int, bool) {
paddingSize := 0
sz := int(msg.Raw[0] & paddingMask) // number of bytes containing the entire size of padding, could be zero
if sz != 0 {
paddingSize = int(bytesToIntLittleEndian(msg.Raw[1 : 1+sz]))
paddingSize = int(bytesToUintLittleEndian(msg.Raw[1 : 1+sz]))
if paddingSize < sz || paddingSize+1 > end {
return 0, false
}
@ -351,7 +340,7 @@ func (msg *ReceivedMessage) SigToPubKey() *ecdsa.PublicKey {
pub, err := crypto.SigToPub(msg.hash(), msg.Signature)
if err != nil {
log.Error(fmt.Sprintf("Could not get public key from signature: %v", err))
log.Error("failed to recover public key from signature", "err", err)
return nil
}
return pub

16
whisper/whisperv5/peer.go
View File

@ -55,13 +55,13 @@ func newPeer(host *Whisper, remote *p2p.Peer, rw p2p.MsgReadWriter) *Peer {
// into the network.
func (p *Peer) start() {
go p.update()
log.Debug(fmt.Sprintf("%v: whisper started", p.peer))
log.Trace("start", "peer", p.ID())
}
// stop terminates the peer updater, stopping message forwarding to it.
func (p *Peer) stop() {
close(p.quit)
log.Debug(fmt.Sprintf("%v: whisper stopped", p.peer))
log.Trace("stop", "peer", p.ID())
}
// handshake sends the protocol initiation status message to the remote peer and
@ -78,19 +78,19 @@ func (p *Peer) handshake() error {
return err
}
if packet.Code != statusCode {
return fmt.Errorf("peer sent %x before status packet", packet.Code)
return fmt.Errorf("peer [%x] sent packet %x before status packet", p.ID(), packet.Code)
}
s := rlp.NewStream(packet.Payload, uint64(packet.Size))
peerVersion, err := s.Uint()
if err != nil {
return fmt.Errorf("bad status message: %v", err)
return fmt.Errorf("peer [%x] sent bad status message: %v", p.ID(), err)
}
if peerVersion != ProtocolVersion {
return fmt.Errorf("protocol version mismatch %d != %d", peerVersion, ProtocolVersion)
return fmt.Errorf("peer [%x]: protocol version mismatch %d != %d", p.ID(), peerVersion, ProtocolVersion)
}
// Wait until out own status is consumed too
if err := <-errc; err != nil {
return fmt.Errorf("failed to send status packet: %v", err)
return fmt.Errorf("peer [%x] failed to send status packet: %v", p.ID(), err)
}
return nil
}
@ -110,7 +110,7 @@ func (p *Peer) update() {
case <-transmit.C:
if err := p.broadcast(); err != nil {
log.Info(fmt.Sprintf("%v: broadcast failed: %v", p.peer, err))
log.Trace("broadcast failed", "reason", err, "peer", p.ID())
return
}
@ -165,7 +165,7 @@ func (p *Peer) broadcast() error {
if err := p2p.Send(p.ws, messagesCode, transmit); err != nil {
return err
}
log.Trace(fmt.Sprint(p.peer, "broadcasted", len(transmit), "message(s)"))
log.Trace("broadcast", "num. messages", len(transmit))
return nil
}

15
whisper/whisperv5/peer_test.go
View File

@ -114,12 +114,13 @@ func initialize(t *testing.T) {
for i := 0; i < NumNodes; i++ {
var node TestNode
node.shh = New()
node.shh.test = true
node.shh.SetMinimumPoW(0.00000001)
node.shh.Start(nil)
topics := make([]TopicType, 0)
topics = append(topics, sharedTopic)
f := Filter{KeySym: sharedKey, Topics: topics}
node.filerId, err = node.shh.Watch(&f)
f := Filter{KeySym: sharedKey}
f.Topics = [][]byte{topics[0][:]}
node.filerId, err = node.shh.Subscribe(&f)
if err != nil {
t.Fatalf("failed to install the filter: %s.", err)
}
@ -166,7 +167,7 @@ func stopServers() {
for i := 0; i < NumNodes; i++ {
n := nodes[i]
if n != nil {
n.shh.Unwatch(n.filerId)
n.shh.Unsubscribe(n.filerId)
n.shh.Stop()
n.server.Stop()
}
@ -257,7 +258,7 @@ func sendMsg(t *testing.T, expected bool, id int) {
return
}
opt := MessageParams{KeySym: sharedKey, Topic: sharedTopic, Payload: expectedMessage, PoW: 0.00000001}
opt := MessageParams{KeySym: sharedKey, Topic: sharedTopic, Payload: expectedMessage, PoW: 0.00000001, WorkTime: 1}
if !expected {
opt.KeySym[0]++
opt.Topic[0]++
@ -267,12 +268,12 @@ func sendMsg(t *testing.T, expected bool, id int) {
msg := NewSentMessage(&opt)
envelope, err := msg.Wrap(&opt)
if err != nil {
t.Fatalf("failed to seal message.")
t.Fatalf("failed to seal message: %s", err)
}
err = nodes[id].shh.Send(envelope)
if err != nil {
t.Fatalf("failed to send message.")
t.Fatalf("failed to send message: %s", err)
}
}

395
whisper/whisperv5/whisper.go
View File

@ -31,59 +31,62 @@ import (
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/rpc"
"github.com/syndtr/goleveldb/leveldb/errors"
"golang.org/x/crypto/pbkdf2"
set "gopkg.in/fatih/set.v0"
)
type Statistics struct {
messagesCleared int
memoryCleared int
totalMemoryUsed int
messagesCleared int
memoryCleared int
memoryUsed int
cycles int
totalMessagesCleared int
}
// Whisper represents a dark communication interface through the Ethereum
// network, using its very own P2P communication layer.
type Whisper struct {
protocol p2p.Protocol
filters *Filters
protocol p2p.Protocol // Protocol description and parameters
filters *Filters // Message filters installed with Subscribe function
privateKeys map[string]*ecdsa.PrivateKey
symKeys map[string][]byte
keyMu sync.RWMutex
privateKeys map[string]*ecdsa.PrivateKey // Private key storage
symKeys map[string][]byte // Symmetric key storage
keyMu sync.RWMutex // Mutex associated with key storages
envelopes map[common.Hash]*Envelope // Pool of envelopes currently tracked by this node
messages map[common.Hash]*ReceivedMessage // Pool of successfully decrypted messages, which are not expired yet
expirations map[uint32]*set.SetNonTS // Message expiration pool
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]*set.SetNonTS // Message expiration pool
poolMu sync.RWMutex // Mutex to sync the message and expiration pools
peers map[*Peer]struct{} // Set of currently active peers
peerMu sync.RWMutex // Mutex to sync the active peer set
mailServer MailServer
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
messageQueue chan *Envelope
p2pMsgQueue chan *Envelope
quit chan struct{}
minPoW float64 // Minimal PoW required by the whisper node
maxMsgLength int // Maximal message length allowed by the whisper node
overflow bool // Indicator of message queue overflow
stats Statistics
stats Statistics // Statistics of whisper node
overflow bool
test bool
mailServer MailServer // MailServer interface
}
// New creates a Whisper client ready to communicate through the Ethereum P2P network.
// Param s should be passed if you want to implement mail server, otherwise nil.
func New() *Whisper {
whisper := &Whisper{
privateKeys: make(map[string]*ecdsa.PrivateKey),
symKeys: make(map[string][]byte),
envelopes: make(map[common.Hash]*Envelope),
messages: make(map[common.Hash]*ReceivedMessage),
expirations: make(map[uint32]*set.SetNonTS),
peers: make(map[*Peer]struct{}),
messageQueue: make(chan *Envelope, messageQueueLimit),
p2pMsgQueue: make(chan *Envelope, messageQueueLimit),
quit: make(chan struct{}),
minPoW: DefaultMinimumPoW,
maxMsgLength: DefaultMaxMessageLength,
}
whisper.filters = NewFilters(whisper)
@ -110,6 +113,8 @@ func (w *Whisper) APIs() []rpc.API {
}
}
// RegisterServer registers MailServer interface.
// MailServer will process all the incoming messages with p2pRequestCode.
func (w *Whisper) RegisterServer(server MailServer) {
w.mailServer = server
}
@ -124,6 +129,25 @@ func (w *Whisper) Version() uint {
return w.protocol.Version
}
// SetMaxMessageLength sets the maximal message length allowed by this node
func (w *Whisper) SetMaxMessageLength(val int) error {
if val <= 0 {
return fmt.Errorf("invalid message length: %d", val)
}
w.maxMsgLength = val
return nil
}
// SetMinimumPoW sets the minimal PoW required by this node
func (w *Whisper) SetMinimumPoW(val float64) error {
if val <= 0.0 {
return fmt.Errorf("invalid PoW: %f", val)
}
w.minPoW = val
return nil
}
// getPeer retrieves peer by ID
func (w *Whisper) getPeer(peerID []byte) (*Peer, error) {
w.peerMu.Lock()
defer w.peerMu.Unlock()
@ -136,9 +160,9 @@ func (w *Whisper) getPeer(peerID []byte) (*Peer, error) {
return nil, fmt.Errorf("Could not find peer with ID: %x", peerID)
}
// MarkPeerTrusted marks specific peer trusted, which will allow it
// to send historic (expired) messages.
func (w *Whisper) MarkPeerTrusted(peerID []byte) error {
// AllowP2PMessagesFromPeer marks specific peer trusted,
// which will allow it to send historic (expired) messages.
func (w *Whisper) AllowP2PMessagesFromPeer(peerID []byte) error {
p, err := w.getPeer(peerID)
if err != nil {
return err
@ -147,6 +171,11 @@ func (w *Whisper) MarkPeerTrusted(peerID []byte) error {
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 (w *Whisper) RequestHistoricMessages(peerID []byte, envelope *Envelope) error {
p, err := w.getPeer(peerID)
if err != nil {
@ -156,153 +185,226 @@ func (w *Whisper) RequestHistoricMessages(peerID []byte, envelope *Envelope) err
return p2p.Send(p.ws, p2pRequestCode, envelope)
}
// SendP2PMessage sends a peer-to-peer message to a specific peer.
func (w *Whisper) SendP2PMessage(peerID []byte, envelope *Envelope) error {
p, err := w.getPeer(peerID)
if err != nil {
return err
}
return p2p.Send(p.ws, p2pCode, envelope)
return w.SendP2PDirect(p, envelope)
}
// SendP2PDirect sends a peer-to-peer message to a specific peer.
func (w *Whisper) SendP2PDirect(peer *Peer, envelope *Envelope) error {
return p2p.Send(peer.ws, p2pCode, envelope)
}
// NewIdentity generates a new cryptographic identity for the client, and injects
// it into the known identities for message decryption.
func (w *Whisper) NewIdentity() *ecdsa.PrivateKey {
// 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 (w *Whisper) NewKeyPair() (string, error) {
key, err := crypto.GenerateKey()
if err != nil || !validatePrivateKey(key) {
key, err = crypto.GenerateKey() // retry once
}
if err != nil {
panic(err)
return "", err
}
if !validatePrivateKey(key) {
panic("Failed to generate valid key")
return "", fmt.Errorf("failed to generate valid key")
}
id, err := GenerateRandomID()
if err != nil {
return "", fmt.Errorf("failed to generate ID: %s", err)
}
w.keyMu.Lock()
defer w.keyMu.Unlock()
w.privateKeys[common.ToHex(crypto.FromECDSAPub(&key.PublicKey))] = key
return key
if w.privateKeys[id] != nil {
return "", fmt.Errorf("failed to generate unique ID")
}
w.privateKeys[id] = key
return id, nil
}
// DeleteIdentity deletes the specified key if it exists.
func (w *Whisper) DeleteIdentity(key string) {
// DeleteKeyPair deletes the specified key if it exists.
func (w *Whisper) DeleteKeyPair(key string) bool {
w.keyMu.Lock()
defer w.keyMu.Unlock()
delete(w.privateKeys, key)
if w.privateKeys[key] != nil {
delete(w.privateKeys, key)
return true
}
return false
}
// HasIdentity checks if the the whisper node is configured with the private key
// HasKeyPair checks if the the whisper node is configured with the private key
// of the specified public pair.
func (w *Whisper) HasIdentity(pubKey string) bool {
func (w *Whisper) HasKeyPair(id string) bool {
w.keyMu.RLock()
defer w.keyMu.RUnlock()
return w.privateKeys[pubKey] != nil
return w.privateKeys[id] != nil
}
// GetIdentity retrieves the private key of the specified public identity.
func (w *Whisper) GetIdentity(pubKey string) *ecdsa.PrivateKey {
// GetPrivateKey retrieves the private key of the specified identity.
func (w *Whisper) GetPrivateKey(id string) (*ecdsa.PrivateKey, error) {
w.keyMu.RLock()
defer w.keyMu.RUnlock()
return w.privateKeys[pubKey]
key := w.privateKeys[id]
if key == nil {
return nil, fmt.Errorf("invalid id")
}
return key, nil
}
func (w *Whisper) GenerateSymKey(name string) error {
// 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 (w *Whisper) GenerateSymKey() (string, error) {
const size = aesKeyLength * 2
buf := make([]byte, size)
_, err := crand.Read(buf)
if err != nil {
return err
return "", err
} else if !validateSymmetricKey(buf) {
return fmt.Errorf("error in GenerateSymKey: crypto/rand failed to generate random data")
return "", fmt.Errorf("error in GenerateSymKey: crypto/rand failed to generate random data")
}
key := buf[:aesKeyLength]
salt := buf[aesKeyLength:]
derived, err := DeriveOneTimeKey(key, salt, EnvelopeVersion)
if err != nil {
return err
return "", err
} else if !validateSymmetricKey(derived) {
return fmt.Errorf("failed to derive valid key")
return "", fmt.Errorf("failed to derive valid key")
}
w.keyMu.Lock()
defer w.keyMu.Unlock()
if w.symKeys[name] != nil {
return fmt.Errorf("Key with name [%s] already exists", name)
}
w.symKeys[name] = derived
return nil
}
func (w *Whisper) AddSymKey(name string, key []byte) error {
if w.HasSymKey(name) {
return fmt.Errorf("Key with name [%s] already exists", name)
}
derived, err := deriveKeyMaterial(key, EnvelopeVersion)
id, err := GenerateRandomID()
if err != nil {
return err
return "", fmt.Errorf("failed to generate ID: %s", err)
}
w.keyMu.Lock()
defer w.keyMu.Unlock()
// double check is necessary, because deriveKeyMaterial() is slow
if w.symKeys[name] != nil {
return fmt.Errorf("Key with name [%s] already exists", name)
if w.symKeys[id] != nil {
return "", fmt.Errorf("failed to generate unique ID")
}
w.symKeys[name] = derived
return nil
w.symKeys[id] = derived
return id, nil
}
func (w *Whisper) HasSymKey(name string) bool {
w.keyMu.RLock()
defer w.keyMu.RUnlock()
return w.symKeys[name] != nil
}
// AddSymKeyDirect stores the key, and returns its id.
func (w *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)
}
func (w *Whisper) DeleteSymKey(name string) {
w.keyMu.Lock()
defer w.keyMu.Unlock()
delete(w.symKeys, name)
if w.symKeys[id] != nil {
return "", fmt.Errorf("failed to generate unique ID")
}
w.symKeys[id] = key
return id, nil
}
func (w *Whisper) GetSymKey(name string) []byte {
// AddSymKeyFromPassword generates the key from password, stores it, and returns its id.
func (w *Whisper) AddSymKeyFromPassword(password string) (string, error) {
id, err := GenerateRandomID()
if err != nil {
return "", fmt.Errorf("failed to generate ID: %s", err)
}
if w.HasSymKey(id) {
return "", fmt.Errorf("failed to generate unique ID")
}
derived, err := deriveKeyMaterial([]byte(password), EnvelopeVersion)
if err != nil {
return "", err
}
w.keyMu.Lock()
defer w.keyMu.Unlock()
// double check is necessary, because deriveKeyMaterial() is very slow
if w.symKeys[id] != nil {
return "", fmt.Errorf("critical error: failed to generate unique ID")
}
w.symKeys[id] = derived
return id, nil
}
// HasSymKey returns true if there is a key associated with the given id.
// Otherwise returns false.
func (w *Whisper) HasSymKey(id string) bool {
w.keyMu.RLock()
defer w.keyMu.RUnlock()
return w.symKeys[name]
return w.symKeys[id] != nil
}
// Watch installs a new message handler to run in case a matching packet arrives
// from the whisper network.
func (w *Whisper) Watch(f *Filter) (string, error) {
// DeleteSymKey deletes the key associated with the name string if it exists.
func (w *Whisper) DeleteSymKey(id string) bool {
w.keyMu.Lock()
defer w.keyMu.Unlock()
if w.symKeys[id] != nil {
delete(w.symKeys, id)
return true
}
return false
}
// GetSymKey returns the symmetric key associated with the given id.
func (w *Whisper) GetSymKey(id string) ([]byte, error) {
w.keyMu.RLock()
defer w.keyMu.RUnlock()
if w.symKeys[id] != nil {
return w.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 (w *Whisper) Subscribe(f *Filter) (string, error) {
return w.filters.Install(f)
}
// GetFilter returns the filter by id.
func (w *Whisper) GetFilter(id string) *Filter {
return w.filters.Get(id)
}
// Unwatch removes an installed message handler.
func (w *Whisper) Unwatch(id string) {
w.filters.Uninstall(id)
// Unsubscribe removes an installed message handler.
func (w *Whisper) Unsubscribe(id string) error {
ok := w.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 (w *Whisper) Send(envelope *Envelope) error {
_, err := w.add(envelope)
ok, err := w.add(envelope)
if !ok {
return fmt.Errorf("failed to add envelope")
}
return err
}
// Start implements node.Service, starting the background data propagation thread
// of the Whisper protocol.
func (w *Whisper) Start(*p2p.Server) error {
log.Info(fmt.Sprint("Whisper started"))
log.Info("started whisper v." + ProtocolVersionStr)
go w.update()
numCPU := runtime.NumCPU()
@ -317,11 +419,11 @@ func (w *Whisper) Start(*p2p.Server) error {
// of the Whisper protocol.
func (w *Whisper) Stop() error {
close(w.quit)
log.Info(fmt.Sprint("Whisper stopped"))
log.Info("whisper stopped")
return nil
}
// handlePeer is called by the underlying P2P layer when the whisper sub-protocol
// HandlePeer is called by the underlying P2P layer when the whisper sub-protocol
// connection is negotiated.
func (wh *Whisper) HandlePeer(peer *p2p.Peer, rw p2p.MsgReadWriter) error {
// Create the new peer and start tracking it
@ -353,26 +455,31 @@ func (wh *Whisper) runMessageLoop(p *Peer, rw p2p.MsgReadWriter) error {
// fetch the next packet
packet, err := rw.ReadMsg()
if err != nil {
log.Warn("message loop", "peer", p.peer.ID(), "err", err)
return err
}
if packet.Size > uint32(wh.maxMsgLength) {
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(fmt.Sprintf("%v: unxepected status message received", p.peer))
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(fmt.Sprintf("%v: failed to decode envelope: [%v], peer will be disconnected", p.peer, err))
return fmt.Errorf("garbage received")
log.Warn("failed to decode envelope, peer will be disconnected", "peer", p.peer.ID(), "err", err)
return errors.New("invalid envelope")
}
// inject all envelopes into the internal pool
for _, envelope := range envelopes {
cached, err := wh.add(envelope)
if err != nil {
log.Warn(fmt.Sprintf("%v: bad envelope received: [%v], peer will be disconnected", p.peer, err))
return fmt.Errorf("invalid envelope")
log.Warn("bad envelope received, peer will be disconnected", "peer", p.peer.ID(), "err", err)
return errors.New("invalid envelope")
}
if cached {
p.mark(envelope)
@ -386,8 +493,8 @@ func (wh *Whisper) runMessageLoop(p *Peer, rw p2p.MsgReadWriter) error {
if p.trusted {
var envelope Envelope
if err := packet.Decode(&envelope); err != nil {
log.Warn(fmt.Sprintf("%v: failed to decode direct message: [%v], peer will be disconnected", p.peer, err))
return fmt.Errorf("garbage received (directMessage)")
log.Warn("failed to decode direct message, peer will be disconnected", "peer", p.peer.ID(), "err", err)
return errors.New("invalid direct message")
}
wh.postEvent(&envelope, true)
}
@ -396,8 +503,8 @@ func (wh *Whisper) runMessageLoop(p *Peer, rw p2p.MsgReadWriter) error {
if wh.mailServer != nil {
var request Envelope
if err := packet.Decode(&request); err != nil {
log.Warn(fmt.Sprintf("%v: failed to decode p2p request message: [%v], peer will be disconnected", p.peer, err))
return fmt.Errorf("garbage received (p2p request)")
log.Warn("failed to decode p2p request message, peer will be disconnected", "peer", p.peer.ID(), "err", err)
return errors.New("invalid p2p request")
}
wh.mailServer.DeliverMail(p, &request)
}
@ -430,12 +537,12 @@ func (wh *Whisper) add(envelope *Envelope) (bool, error) {
if envelope.Expiry+SynchAllowance*2 < now {
return false, fmt.Errorf("very old message")
} else {
log.Debug(fmt.Sprintf("expired envelope dropped [%x]", envelope.Hash()))
log.Debug("expired envelope dropped", "hash", envelope.Hash().Hex())
return false, nil // drop envelope without error
}
}
if len(envelope.Data) > MaxMessageLength {
if envelope.size() > wh.maxMsgLength {
return false, fmt.Errorf("huge messages are not allowed [%x]", envelope.Hash())
}
@ -453,8 +560,8 @@ func (wh *Whisper) add(envelope *Envelope) (bool, error) {
return false, fmt.Errorf("oversized salt [%x]", envelope.Hash())
}
if envelope.PoW() < MinimumPoW && !wh.test {
log.Debug(fmt.Sprintf("envelope with low PoW dropped: %f [%x]", envelope.PoW(), envelope.Hash()))
if envelope.PoW() < wh.minPoW {
log.Debug("envelope with low PoW dropped", "PoW", envelope.PoW(), "hash", envelope.Hash().Hex())
return false, nil // drop envelope without error
}
@ -474,10 +581,10 @@ func (wh *Whisper) add(envelope *Envelope) (bool, error) {
wh.poolMu.Unlock()
if alreadyCached {
log.Trace(fmt.Sprintf("whisper envelope already cached [%x]\n", envelope.Hash()))
log.Trace("whisper envelope already cached", "hash", envelope.Hash().Hex())
} else {
log.Trace(fmt.Sprintf("cached whisper envelope [%x]: %v\n", envelope.Hash(), envelope))
wh.stats.totalMemoryUsed += envelope.size()
log.Trace("cached whisper envelope", "hash", envelope.Hash().Hex())
wh.stats.memoryUsed += envelope.size()
wh.postEvent(envelope, false) // notify the local node about the new message
if wh.mailServer != nil {
wh.mailServer.Archive(envelope)
@ -508,11 +615,12 @@ func (w *Whisper) checkOverflow() {
if queueSize == messageQueueLimit {
if !w.overflow {
w.overflow = true
log.Warn(fmt.Sprint("message queue overflow"))
log.Warn("message queue overflow")
}
} else if queueSize <= messageQueueLimit/2 {
if w.overflow {
w.overflow = false
log.Warn("message queue overflow fixed (back to normal)")
}
}
}
@ -558,19 +666,17 @@ func (w *Whisper) expire() {
w.poolMu.Lock()
defer w.poolMu.Unlock()
w.stats.clear()
w.stats.reset()
now := uint32(time.Now().Unix())
for expiry, hashSet := range w.expirations {
if expiry < now {
w.stats.messagesCleared++
// Dump all expired messages and remove timestamp
hashSet.Each(func(v interface{}) bool {
sz := w.envelopes[v.(common.Hash)].size()
w.stats.memoryCleared += sz
w.stats.totalMemoryUsed -= sz
delete(w.envelopes, v.(common.Hash))
delete(w.messages, v.(common.Hash))
w.stats.messagesCleared++
w.stats.memoryCleared += sz
w.stats.memoryUsed -= sz
return true
})
w.expirations[expiry].Clear()
@ -579,12 +685,21 @@ func (w *Whisper) expire() {
}
}
// Stats returns the whisper node statistics.
func (w *Whisper) Stats() string {
return fmt.Sprintf("Latest expiry cycle cleared %d messages (%d bytes). Memory usage: %d bytes.",
w.stats.messagesCleared, w.stats.memoryCleared, w.stats.totalMemoryUsed)
result := fmt.Sprintf("Memory usage: %d bytes. Average messages cleared per expiry cycle: %d. Total messages cleared: %d.",
w.stats.memoryUsed, w.stats.totalMessagesCleared/w.stats.cycles, w.stats.totalMessagesCleared)
if w.stats.messagesCleared > 0 {
result += fmt.Sprintf(" Latest expiry cycle cleared %d messages (%d bytes).",
w.stats.messagesCleared, w.stats.memoryCleared)
}
if w.overflow {
result += " Message queue state: overflow."
}
return result
}
// envelopes retrieves all the messages currently pooled by the node.
// Envelopes retrieves all the messages currently pooled by the node.
func (w *Whisper) Envelopes() []*Envelope {
w.poolMu.RLock()
defer w.poolMu.RUnlock()
@ -596,15 +711,17 @@ func (w *Whisper) Envelopes() []*Envelope {
return all
}
// Messages retrieves all the decrypted messages matching a filter id.
// Messages iterates through all currently floating envelopes
// and retrieves all the messages, that this filter could decrypt.
func (w *Whisper) Messages(id string) []*ReceivedMessage {
result := make([]*ReceivedMessage, 0)
w.poolMu.RLock()
defer w.poolMu.RUnlock()
if filter := w.filters.Get(id); filter != nil {
for _, msg := range w.messages {
if filter.MatchMessage(msg) {
for _, env := range w.envelopes {
msg := filter.processEnvelope(env)
if msg != nil {
result = append(result, msg)
}
}
@ -612,6 +729,7 @@ func (w *Whisper) Messages(id string) []*ReceivedMessage {
return result
}
// isEnvelopeCached checks if envelope with specific hash has already been received and cached.
func (w *Whisper) isEnvelopeCached(hash common.Hash) bool {
w.poolMu.Lock()
defer w.poolMu.Unlock()
@ -620,22 +738,30 @@ func (w *Whisper) isEnvelopeCached(hash common.Hash) bool {
return exist
}
func (w *Whisper) addDecryptedMessage(msg *ReceivedMessage) {
w.poolMu.Lock()
defer w.poolMu.Unlock()
// reset resets the node's statistics after each expiry cycle.
func (s *Statistics) reset() {
s.cycles++
s.totalMessagesCleared += s.messagesCleared
w.messages[msg.EnvelopeHash] = msg
}
func (s *Statistics) clear() {
s.memoryCleared = 0
s.messagesCleared = 0
}
// ValidateKeyID checks the format of key id.
func ValidateKeyID(id string) error {
const target = keyIdSize * 2
if len(id) != target {
return fmt.Errorf("wrong size of key ID (expected %d bytes, got %d)", target, len(id))
}
return nil
}
// 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
@ -648,6 +774,7 @@ func validateSymmetricKey(k []byte) bool {
return len(k) > 0 && !containsOnlyZeros(k)
}
// containsOnlyZeros checks if the data contain only zeros.
func containsOnlyZeros(data []byte) bool {
for _, b := range data {
if b != 0 {
@ -657,7 +784,8 @@ func containsOnlyZeros(data []byte) bool {
return true
}
func bytesToIntLittleEndian(b []byte) (res uint64) {
// 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
@ -666,7 +794,8 @@ func bytesToIntLittleEndian(b []byte) (res uint64) {
return res
}
func BytesToIntBigEndian(b []byte) (res uint64) {
// 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])
@ -674,7 +803,7 @@ func BytesToIntBigEndian(b []byte) (res uint64) {
return res
}
// DeriveSymmetricKey derives symmetric key material from the key or password.
// deriveKeyMaterial derives symmetric key material from the key or password.
// pbkdf2 is used for security, in case people use password instead of randomly generated keys.
func deriveKeyMaterial(key []byte, version uint64) (derivedKey []byte, err error) {
if version == 0 {
@ -686,3 +815,17 @@ func deriveKeyMaterial(key []byte, version uint64) (derivedKey []byte, err error
return nil, unknownVersionError(version)
}
}
// GenerateRandomID generates a random string, which is then returned to be used as a key id
func GenerateRandomID() (id string, err error) {
buf := make([]byte, keyIdSize)
_, err = crand.Read(buf)
if err != nil {
return "", err
}
if !validateSymmetricKey(buf) {
return "", fmt.Errorf("error in generateRandomID: crypto/rand failed to generate random data")
}
id = common.Bytes2Hex(buf)
return id, err
}

355
whisper/whisperv5/whisper_test.go
View File

@ -21,9 +21,6 @@ import (
mrand "math/rand"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
)
func TestWhisperBasic(t *testing.T) {
@ -55,16 +52,19 @@ func TestWhisperBasic(t *testing.T) {
if peer != nil {
t.Fatal("found peer for random key.")
}
if err := w.MarkPeerTrusted(peerID); err == nil {
if err := w.AllowP2PMessagesFromPeer(peerID); err == nil {
t.Fatalf("failed MarkPeerTrusted.")
}
exist := w.HasSymKey("non-existing")
if exist {
t.Fatalf("failed HasSymKey.")
}
key := w.GetSymKey("non-existing")
key, err := w.GetSymKey("non-existing")
if err == nil {
t.Fatalf("failed GetSymKey(non-existing): false positive.")
}
if key != nil {
t.Fatalf("failed GetSymKey.")
t.Fatalf("failed GetSymKey: false positive.")
}
mail := w.Envelopes()
if len(mail) != 0 {
@ -80,7 +80,7 @@ func TestWhisperBasic(t *testing.T) {
if _, err := deriveKeyMaterial(peerID, ver); err != unknownVersionError(ver) {
t.Fatalf("failed deriveKeyMaterial with param = %v: %s.", peerID, err)
}
derived, err := deriveKeyMaterial(peerID, 0)
derived, err = deriveKeyMaterial(peerID, 0)
if err != nil {
t.Fatalf("failed second deriveKeyMaterial with param = %v: %s.", peerID, err)
}
@ -92,8 +92,8 @@ func TestWhisperBasic(t *testing.T) {
}
buf := []byte{0xFF, 0xE5, 0x80, 0x2, 0}
le := bytesToIntLittleEndian(buf)
be := BytesToIntBigEndian(buf)
le := bytesToUintLittleEndian(buf)
be := BytesToUintBigEndian(buf)
if le != uint64(0x280e5ff) {
t.Fatalf("failed bytesToIntLittleEndian: %d.", le)
}
@ -101,7 +101,14 @@ func TestWhisperBasic(t *testing.T) {
t.Fatalf("failed BytesToIntBigEndian: %d.", be)
}
pk := w.NewIdentity()
id, err := w.NewKeyPair()
if err != nil {
t.Fatalf("failed to generate new key pair: %s.", err)
}
pk, err := w.GetPrivateKey(id)
if err != nil {
t.Fatalf("failed to retrieve new key pair: %s.", err)
}
if !validatePrivateKey(pk) {
t.Fatalf("failed validatePrivateKey: %v.", pk)
}
@ -112,67 +119,112 @@ func TestWhisperBasic(t *testing.T) {
func TestWhisperIdentityManagement(t *testing.T) {
w := New()
id1 := w.NewIdentity()
id2 := w.NewIdentity()
pub1 := common.ToHex(crypto.FromECDSAPub(&id1.PublicKey))
pub2 := common.ToHex(crypto.FromECDSAPub(&id2.PublicKey))
pk1 := w.GetIdentity(pub1)
pk2 := w.GetIdentity(pub2)
if !w.HasIdentity(pub1) {
t.Fatalf("failed HasIdentity(pub1).")
id1, err := w.NewKeyPair()
if err != nil {
t.Fatalf("failed to generate new key pair: %s.", err)
}
if !w.HasIdentity(pub2) {
t.Fatalf("failed HasIdentity(pub2).")
id2, err := w.NewKeyPair()
if err != nil {
t.Fatalf("failed to generate new key pair: %s.", err)
}
if pk1 != id1 {
t.Fatalf("failed GetIdentity(pub1).")
pk1, err := w.GetPrivateKey(id1)
if err != nil {
t.Fatalf("failed to retrieve the key pair: %s.", err)
}
if pk2 != id2 {
t.Fatalf("failed GetIdentity(pub2).")
pk2, err := w.GetPrivateKey(id2)
if err != nil {
t.Fatalf("failed to retrieve the key pair: %s.", err)
}
if !w.HasKeyPair(id1) {
t.Fatalf("failed HasIdentity(pk1).")
}
if !w.HasKeyPair(id2) {
t.Fatalf("failed HasIdentity(pk2).")
}
if pk1 == nil {
t.Fatalf("failed GetIdentity(pk1).")
}
if pk2 == nil {
t.Fatalf("failed GetIdentity(pk2).")
}
if !validatePrivateKey(pk1) {
t.Fatalf("pk1 is invalid.")
}
if !validatePrivateKey(pk2) {
t.Fatalf("pk2 is invalid.")
}
// Delete one identity
w.DeleteIdentity(pub1)
pk1 = w.GetIdentity(pub1)
pk2 = w.GetIdentity(pub2)
if w.HasIdentity(pub1) {
done := w.DeleteKeyPair(id1)
if !done {
t.Fatalf("failed to delete id1.")
}
pk1, err = w.GetPrivateKey(id1)
if err == nil {
t.Fatalf("retrieve the key pair: false positive.")
}
pk2, err = w.GetPrivateKey(id2)
if err != nil {
t.Fatalf("failed to retrieve the key pair: %s.", err)
}
if w.HasKeyPair(id1) {
t.Fatalf("failed DeleteIdentity(pub1): still exist.")
}
if !w.HasIdentity(pub2) {
if !w.HasKeyPair(id2) {
t.Fatalf("failed DeleteIdentity(pub1): pub2 does not exist.")
}
if pk1 != nil {
t.Fatalf("failed DeleteIdentity(pub1): first key still exist.")
}
if pk2 != id2 {
if pk2 == nil {
t.Fatalf("failed DeleteIdentity(pub1): second key does not exist.")
}
// Delete again non-existing identity
w.DeleteIdentity(pub1)
pk1 = w.GetIdentity(pub1)
pk2 = w.GetIdentity(pub2)
if w.HasIdentity(pub1) {
done = w.DeleteKeyPair(id1)
if done {
t.Fatalf("delete id1: false positive.")
}
pk1, err = w.GetPrivateKey(id1)
if err == nil {
t.Fatalf("retrieve the key pair: false positive.")
}
pk2, err = w.GetPrivateKey(id2)
if err != nil {
t.Fatalf("failed to retrieve the key pair: %s.", err)
}
if w.HasKeyPair(id1) {
t.Fatalf("failed delete non-existing identity: exist.")
}
if !w.HasIdentity(pub2) {
if !w.HasKeyPair(id2) {
t.Fatalf("failed delete non-existing identity: pub2 does not exist.")
}
if pk1 != nil {
t.Fatalf("failed delete non-existing identity: first key exist.")
}
if pk2 != id2 {
if pk2 == nil {
t.Fatalf("failed delete non-existing identity: second key does not exist.")
}
// Delete second identity
w.DeleteIdentity(pub2)
pk1 = w.GetIdentity(pub1)
pk2 = w.GetIdentity(pub2)
if w.HasIdentity(pub1) {
done = w.DeleteKeyPair(id2)
if !done {
t.Fatalf("failed to delete id2.")
}
pk1, err = w.GetPrivateKey(id1)
if err == nil {
t.Fatalf("retrieve the key pair: false positive.")
}
pk2, err = w.GetPrivateKey(id2)
if err == nil {
t.Fatalf("retrieve the key pair: false positive.")
}
if w.HasKeyPair(id1) {
t.Fatalf("failed delete second identity: first identity exist.")
}
if w.HasIdentity(pub2) {
if w.HasKeyPair(id2) {
t.Fatalf("failed delete second identity: still exist.")
}
if pk1 != nil {
@ -186,23 +238,30 @@ func TestWhisperIdentityManagement(t *testing.T) {
func TestWhisperSymKeyManagement(t *testing.T) {
InitSingleTest()
var err error
var k1, k2 []byte
w := New()
id1 := string("arbitrary-string-1")
id2 := string("arbitrary-string-2")
err := w.GenerateSymKey(id1)
id1, err = w.GenerateSymKey()
if err != nil {
t.Fatalf("failed GenerateSymKey with seed %d: %s.", seed, err)
}
k1 = w.GetSymKey(id1)
k2 = w.GetSymKey(id2)
k1, err = w.GetSymKey(id1)
if err != nil {
t.Fatalf("failed GetSymKey(id1).")
}
k2, err = w.GetSymKey(id2)
if err == nil {
t.Fatalf("failed GetSymKey(id2): false positive.")
}
if !w.HasSymKey(id1) {
t.Fatalf("failed HasSymKey(id1).")
}
if w.HasSymKey(id2) {
t.Fatalf("failed HasSymKey(id2).")
t.Fatalf("failed HasSymKey(id2): false positive.")
}
if k1 == nil {
t.Fatalf("first key does not exist.")
@ -212,37 +271,49 @@ func TestWhisperSymKeyManagement(t *testing.T) {
}
// add existing id, nothing should change
randomKey := make([]byte, 16)
randomKey := make([]byte, aesKeyLength)
mrand.Read(randomKey)
err = w.AddSymKey(id1, randomKey)
if err == nil {
t.Fatalf("failed AddSymKey with seed %d.", seed)
id1, err = w.AddSymKeyDirect(randomKey)
if err != nil {
t.Fatalf("failed AddSymKey with seed %d: %s.", seed, err)
}
k1 = w.GetSymKey(id1)
k2 = w.GetSymKey(id2)
k1, err = w.GetSymKey(id1)
if err != nil {
t.Fatalf("failed w.GetSymKey(id1).")
}
k2, err = w.GetSymKey(id2)
if err == nil {
t.Fatalf("failed w.GetSymKey(id2): false positive.")
}
if !w.HasSymKey(id1) {
t.Fatalf("failed w.HasSymKey(id1).")
}
if w.HasSymKey(id2) {
t.Fatalf("failed w.HasSymKey(id2).")
t.Fatalf("failed w.HasSymKey(id2): false positive.")
}
if k1 == nil {
t.Fatalf("first key does not exist.")
}
if bytes.Equal(k1, randomKey) {
t.Fatalf("k1 == randomKey.")
if !bytes.Equal(k1, randomKey) {
t.Fatalf("k1 != randomKey.")
}
if k2 != nil {
t.Fatalf("second key already exist.")
}
err = w.AddSymKey(id2, randomKey) // add non-existing (yet)
id2, err = w.AddSymKeyDirect(randomKey)
if err != nil {
t.Fatalf("failed AddSymKey(id2) with seed %d: %s.", seed, err)
}
k1 = w.GetSymKey(id1)
k2 = w.GetSymKey(id2)
k1, err = w.GetSymKey(id1)
if err != nil {
t.Fatalf("failed w.GetSymKey(id1).")
}
k2, err = w.GetSymKey(id2)
if err != nil {
t.Fatalf("failed w.GetSymKey(id2).")
}
if !w.HasSymKey(id1) {
t.Fatalf("HasSymKey(id1) failed.")
}
@ -255,11 +326,11 @@ func TestWhisperSymKeyManagement(t *testing.T) {
if k2 == nil {
t.Fatalf("k2 does not exist.")
}
if bytes.Equal(k1, k2) {
t.Fatalf("k1 == k2.")
if !bytes.Equal(k1, k2) {
t.Fatalf("k1 != k2.")
}
if bytes.Equal(k1, randomKey) {
t.Fatalf("k1 == randomKey.")
if !bytes.Equal(k1, randomKey) {
t.Fatalf("k1 != randomKey.")
}
if len(k1) != aesKeyLength {
t.Fatalf("wrong length of k1.")
@ -269,8 +340,17 @@ func TestWhisperSymKeyManagement(t *testing.T) {
}
w.DeleteSymKey(id1)
k1 = w.GetSymKey(id1)
k2 = w.GetSymKey(id2)
k1, err = w.GetSymKey(id1)
if err == nil {
t.Fatalf("failed w.GetSymKey(id1): false positive.")
}
if k1 != nil {
t.Fatalf("failed GetSymKey(id1): false positive.")
}
k2, err = w.GetSymKey(id2)
if err != nil {
t.Fatalf("failed w.GetSymKey(id2).")
}
if w.HasSymKey(id1) {
t.Fatalf("failed to delete first key: still exist.")
}
@ -286,8 +366,17 @@ func TestWhisperSymKeyManagement(t *testing.T) {
w.DeleteSymKey(id1)
w.DeleteSymKey(id2)
k1 = w.GetSymKey(id1)
k2 = w.GetSymKey(id2)
k1, err = w.GetSymKey(id1)
if err == nil {
t.Fatalf("failed w.GetSymKey(id1): false positive.")
}
k2, err = w.GetSymKey(id2)
if err == nil {
t.Fatalf("failed w.GetSymKey(id2): false positive.")
}
if k1 != nil || k2 != nil {
t.Fatalf("k1 or k2 is not nil")
}
if w.HasSymKey(id1) {
t.Fatalf("failed to delete second key: first key exist.")
}
@ -300,13 +389,63 @@ func TestWhisperSymKeyManagement(t *testing.T) {
if k2 != nil {
t.Fatalf("failed to delete second key: second key is not nil.")
}
randomKey = make([]byte, aesKeyLength+1)
mrand.Read(randomKey)
id1, 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).")
}
k2, err = w.GetSymKey(id2)
if err != nil {
t.Fatalf("failed w.GetSymKey(id2).")
}
if !w.HasSymKey(id1) {
t.Fatalf("HasSymKey(id1) failed.")
}
if !w.HasSymKey(id2) {
t.Fatalf("HasSymKey(id2) failed.")
}
if k1 == nil {
t.Fatalf("k1 does not exist.")
}
if k2 == nil {
t.Fatalf("k2 does not exist.")
}
if !bytes.Equal(k1, k2) {
t.Fatalf("k1 != k2.")
}
if len(k1) != aesKeyLength {
t.Fatalf("wrong length of k1.")
}
if len(k2) != aesKeyLength {
t.Fatalf("wrong length of k2.")
}
if !validateSymmetricKey(k2) {
t.Fatalf("key validation failed.")
}
}
func TestExpiry(t *testing.T) {
InitSingleTest()
w := New()
w.test = true
w.SetMinimumPoW(0.0000001)
defer w.SetMinimumPoW(DefaultMinimumPoW)
w.Start(nil)
defer w.Stop()
@ -354,3 +493,87 @@ func TestExpiry(t *testing.T) {
t.Fatalf("expire failed, seed: %d.", seed)
}
}
func TestCustomization(t *testing.T) {
InitSingleTest()
w := New()
defer w.SetMinimumPoW(DefaultMinimumPoW)
defer w.SetMaxMessageLength(DefaultMaxMessageLength)
w.Start(nil)
defer w.Stop()
const smallPoW = 0.00001
f, err := generateFilter(t, true)
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 := NewSentMessage(params)
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.SetMinimumPoW(smallPoW / 2)
err = w.Send(env)
if err != nil {
t.Fatalf("failed to send envelope with seed %d: %s.", seed, err)
}
params.TTL++
msg = NewSentMessage(params)
env, err = msg.Wrap(params)
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
w.SetMaxMessageLength(env.size() - 1)
err = w.Send(env)
if err == nil {
t.Fatalf("successfully sent oversized envelope (seed %d): false positive.", seed)
}
w.SetMaxMessageLength(DefaultMaxMessageLength)
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
for j := 0; j < 20; j++ {
time.Sleep(100 * time.Millisecond)
if len(w.Envelopes()) > 1 {
received = true
break
}
}
if !received {
t.Fatalf("did not receive the sent envelope, seed: %d.", seed)
}
// check w.messages()
id, err := w.Subscribe(f)
time.Sleep(5 * time.Millisecond)
mail := f.Retrieve()
if len(mail) > 0 {
t.Fatalf("received premature mail")
}
mail = w.Messages(id)
if len(mail) != 2 {
t.Fatalf("failed to get whisper messages")
}
}