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whisperv5: integrate whisper and add whisper RPC simulator

This commit is contained in:
Bas van Kervel 2017-06-13 11:49:07 +02:00
parent 80f7c6c299
commit b58a501673
27 changed files with 1311 additions and 555 deletions
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35
cmd/geth/config.go
View File

@ -33,6 +33,7 @@ import (
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/params"
whisper "github.com/ethereum/go-ethereum/whisper/whisperv5"
"github.com/naoina/toml"
)
@ -42,7 +43,7 @@ var (
Name: "dumpconfig",
Usage: "Show configuration values",
ArgsUsage: "",
Flags: append(nodeFlags, rpcFlags...),
Flags: append(append(nodeFlags, rpcFlags...), whisper.Flags...),
Category: "MISCELLANEOUS COMMANDS",
Description: `The dumpconfig command shows configuration values.`,
}
@ -76,6 +77,7 @@ type ethstatsConfig struct {
type gethConfig struct {
Eth eth.Config
Shh whisper.Config
Node node.Config
Ethstats ethstatsConfig
}
@ -99,8 +101,8 @@ func defaultNodeConfig() node.Config {
cfg := node.DefaultConfig
cfg.Name = clientIdentifier
cfg.Version = params.VersionWithCommit(gitCommit)
cfg.HTTPModules = append(cfg.HTTPModules, "eth")
cfg.WSModules = append(cfg.WSModules, "eth")
cfg.HTTPModules = append(cfg.HTTPModules, "eth", "shh")
cfg.WSModules = append(cfg.WSModules, "eth", "shh")
cfg.IPCPath = "geth.ipc"
return cfg
}
@ -109,6 +111,7 @@ func makeConfigNode(ctx *cli.Context) (*node.Node, gethConfig) {
// Load defaults.
cfg := gethConfig{
Eth: eth.DefaultConfig,
Shh: whisper.DefaultConfig,
Node: defaultNodeConfig(),
}
@ -130,19 +133,37 @@ func makeConfigNode(ctx *cli.Context) (*node.Node, gethConfig) {
cfg.Ethstats.URL = ctx.GlobalString(utils.EthStatsURLFlag.Name)
}
utils.SetShhConfig(ctx, stack, &cfg.Shh)
return stack, cfg
}
// enableWhisper returns true in case one of the whisper flags is set.
func enableWhisper(ctx *cli.Context) bool {
for _, flag := range whisper.Flags {
if ctx.GlobalIsSet(flag.GetName()) {
return true
}
}
return false
}
func makeFullNode(ctx *cli.Context) *node.Node {
stack, cfg := makeConfigNode(ctx)
utils.RegisterEthService(stack, &cfg.Eth)
// Whisper must be explicitly enabled, but is auto-enabled in --dev mode.
shhEnabled := ctx.GlobalBool(utils.WhisperEnabledFlag.Name)
shhAutoEnabled := !ctx.GlobalIsSet(utils.WhisperEnabledFlag.Name) && ctx.GlobalIsSet(utils.DevModeFlag.Name)
// Whisper must be explicitly enabled by specifying at least 1 whisper flag or in dev mode
shhEnabled := enableWhisper(ctx)
shhAutoEnabled := !ctx.GlobalIsSet(whisper.WhisperEnabledFlag.Name) && ctx.GlobalIsSet(utils.DevModeFlag.Name)
if shhEnabled || shhAutoEnabled {
utils.RegisterShhService(stack)
if ctx.GlobalIsSet(whisper.MaxMessageSizeFlag.Name) {
cfg.Shh.MaxMessageSize = uint32(ctx.Int(whisper.MaxMessageSizeFlag.Name))
}
if ctx.GlobalIsSet(whisper.MinPOWFlag.Name) {
cfg.Shh.MinimumAcceptedPOW = ctx.Float64(whisper.MinPOWFlag.Name)
}
utils.RegisterShhService(stack, &cfg.Shh)
}
// Add the Ethereum Stats daemon if requested.

3
cmd/geth/main.go
View File

@ -35,6 +35,7 @@ import (
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/metrics"
"github.com/ethereum/go-ethereum/node"
whisper "github.com/ethereum/go-ethereum/whisper/whisperv5"
"gopkg.in/urfave/cli.v1"
)
@ -95,7 +96,6 @@ var (
utils.NetrestrictFlag,
utils.NodeKeyFileFlag,
utils.NodeKeyHexFlag,
utils.WhisperEnabledFlag,
utils.DevModeFlag,
utils.TestnetFlag,
utils.RinkebyFlag,
@ -161,6 +161,7 @@ func init() {
app.Flags = append(app.Flags, rpcFlags...)
app.Flags = append(app.Flags, consoleFlags...)
app.Flags = append(app.Flags, debug.Flags...)
app.Flags = append(app.Flags, whisper.Flags...)
app.Before = func(ctx *cli.Context) error {
runtime.GOMAXPROCS(runtime.NumCPU())

10
cmd/geth/usage.go
View File

@ -24,6 +24,7 @@ import (
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/internal/debug"
"github.com/ethereum/go-ethereum/whisper/whisperv5"
"gopkg.in/urfave/cli.v1"
)
@ -187,6 +188,10 @@ var AppHelpFlagGroups = []flagGroup{
utils.NoCompactionFlag,
}, debug.Flags...),
},
{
Name: "Whisper (EXPERIMENTAL)",
Flags: whisperv5.Flags,
},
{
Name: "DEPRECATED",
Flags: []cli.Flag{
@ -195,10 +200,7 @@ var AppHelpFlagGroups = []flagGroup{
},
},
{
Name: "EXPERIMENTAL",
Flags: []cli.Flag{
utils.WhisperEnabledFlag,
},
Name: "MISC",
},
}

21
cmd/utils/flags.go
View File

@ -440,11 +440,6 @@ var (
Usage: "Restricts network communication to the given IP networks (CIDR masks)",
}
WhisperEnabledFlag = cli.BoolFlag{
Name: "shh",
Usage: "Enable Whisper",
}
// ATM the url is left to the user and deployment to
JSpathFlag = cli.StringFlag{
Name: "jspath",
@ -878,6 +873,16 @@ func checkExclusive(ctx *cli.Context, flags ...cli.Flag) {
}
}
// SetShhConfig applies shh-related command line flags to the config.
func SetShhConfig(ctx *cli.Context, stack *node.Node, cfg *whisper.Config) {
if ctx.GlobalIsSet(whisper.MaxMessageSizeFlag.Name) {
cfg.MaxMessageSize = uint32(ctx.GlobalUint(whisper.MaxMessageSizeFlag.Name))
}
if ctx.GlobalIsSet(whisper.MinPOWFlag.Name) {
cfg.MinimumAcceptedPOW = ctx.GlobalFloat64(whisper.MinPOWFlag.Name)
}
}
// SetEthConfig applies eth-related command line flags to the config.
func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *eth.Config) {
// Avoid conflicting network flags
@ -983,8 +988,10 @@ func RegisterEthService(stack *node.Node, cfg *eth.Config) {
}
// RegisterShhService configures Whisper and adds it to the given node.
func RegisterShhService(stack *node.Node) {
if err := stack.Register(func(*node.ServiceContext) (node.Service, error) { return whisper.New(), nil }); err != nil {
func RegisterShhService(stack *node.Node, cfg *whisper.Config) {
if err := stack.Register(func(n *node.ServiceContext) (node.Service, error) {
return whisper.New(cfg), nil
}); err != nil {
Fatalf("Failed to register the Whisper service: %v", err)
}
}

16
cmd/wnode/main.go
View File

@ -87,7 +87,7 @@ var (
argVerbosity = flag.Int("verbosity", int(log.LvlError), "log verbosity level")
argTTL = flag.Uint("ttl", 30, "time-to-live for messages in seconds")
argWorkTime = flag.Uint("work", 5, "work time in seconds")
argMaxSize = flag.Int("maxsize", whisper.DefaultMaxMessageLength, "max size of message")
argMaxSize = flag.Uint("maxsize", uint(whisper.DefaultMaxMessageSize), "max size of message")
argPoW = flag.Float64("pow", whisper.DefaultMinimumPoW, "PoW for normal messages in float format (e.g. 2.7)")
argServerPoW = flag.Float64("mspow", whisper.DefaultMinimumPoW, "PoW requirement for Mail Server request")
@ -198,6 +198,11 @@ func initialize() {
peers = append(peers, peer)
}
cfg := &whisper.Config{
MaxMessageSize: uint32(*argMaxSize),
MinimumAcceptedPOW: *argPoW,
}
if *mailServerMode {
if len(msPassword) == 0 {
msPassword, err = console.Stdin.PromptPassword("Please enter the Mail Server password: ")
@ -205,11 +210,12 @@ func initialize() {
utils.Fatalf("Failed to read Mail Server password: %s", err)
}
}
shh = whisper.New()
shh = whisper.New(cfg)
shh.RegisterServer(&mailServer)
mailServer.Init(shh, *argDBPath, msPassword, *argServerPoW)
} else {
shh = whisper.New()
shh = whisper.New(cfg)
}
if *argPoW != whisper.DefaultMinimumPoW {
@ -219,8 +225,8 @@ func initialize() {
}
}
if *argMaxSize != whisper.DefaultMaxMessageLength {
err := shh.SetMaxMessageLength(*argMaxSize)
if uint32(*argMaxSize) != whisper.DefaultMaxMessageSize {
err := shh.SetMaxMessageSize(uint32(*argMaxSize))
if err != nil {
utils.Fatalf("Failed to set max message size: %s", err)
}

70
internal/web3ext/web3ext.go
View File

@ -526,10 +526,6 @@ const Shh_JS = `
web3._extend({
property: 'shh',
methods: [
new web3._extend.Method({
name: 'info',
call: 'shh_info'
}),
new web3._extend.Method({
name: 'setMaxMessageLength',
call: 'shh_setMaxMessageLength',
@ -541,8 +537,8 @@ web3._extend({
params: 1
}),
new web3._extend.Method({
name: 'allowP2PMessagesFromPeer',
call: 'shh_allowP2PMessagesFromPeer',
name: 'markTrustedPeer',
call: 'shh_markTrustedPeer',
params: 1
}),
new web3._extend.Method({
@ -570,58 +566,68 @@ web3._extend({
params: 1
}),
new web3._extend.Method({
name: 'generateSymmetricKey',
call: 'shh_generateSymmetricKey',
name: 'newSymKey',
call: 'shh_newSymKey',
}),
new web3._extend.Method({
name: 'addSymmetricKeyDirect',
call: 'shh_addSymmetricKeyDirect',
name: 'addSymKey',
call: 'shh_addSymKey',
params: 1
}),
new web3._extend.Method({
name: 'addSymmetricKeyFromPassword',
call: 'shh_addSymmetricKeyFromPassword',
name: 'generateSymKeyFromPassword',
call: 'shh_generateSymKeyFromPassword',
params: 1
}),
new web3._extend.Method({
name: 'hasSymmetricKey',
call: 'shh_hasSymmetricKey',
name: 'hasSymKey',
call: 'shh_hasSymKey',
params: 1
}),
new web3._extend.Method({
name: 'getSymmetricKey',
call: 'shh_getSymmetricKey',
name: 'getSymKey',
call: 'shh_getSymKey',
params: 1
}),
new web3._extend.Method({
name: 'deleteSymmetricKey',
call: 'shh_deleteSymmetricKey',
name: 'deleteSymKey',
call: 'shh_deleteSymKey',
params: 1
}),
new web3._extend.Method({
name: 'subscribe',
call: 'shh_subscribe',
params: 1
params: 2
}),
new web3._extend.Method({
name: 'unsubscribe',
call: 'shh_unsubscribe',
params: 1
}),
new web3._extend.Method({
name: 'getNewSubscriptionMessages',
call: 'shh_getNewSubscriptionMessages',
params: 1
}),
new web3._extend.Method({
name: 'getFloatingMessages',
call: 'shh_getFloatingMessages',
params: 1
}),
new web3._extend.Method({
name: 'post',
call: 'shh_post',
params: 1
}),
new web3._extend.Method({
name: 'publicKey',
call: 'shh_getPublicKey',
params: 1
}),
new web3._extend.Method({
name: 'getFilterMessages',
call: 'shh_getFilterMessages',
params: 1
}),
new web3._extend.Method({
name: 'deleteMessageFilter',
call: 'shh_deleteMessageFilter',
params: 1
}),
new web3._extend.Method({
name: 'newMessageFilter',
call: 'shh_newMessageFilter',
params: 1
})
],
properties:
@ -630,7 +636,11 @@ web3._extend({
name: 'version',
getter: 'shh_version',
outputFormatter: web3._extend.utils.toDecimal
})
}),
new web3._extend.Property({
name: 'info',
getter: 'shh_info'
}),
]
});
`

4
mobile/geth.go
View File

@ -169,7 +169,9 @@ func NewNode(datadir string, config *NodeConfig) (stack *Node, _ error) {
}
// Register the Whisper protocol if requested
if config.WhisperEnabled {
if err := rawStack.Register(func(*node.ServiceContext) (node.Service, error) { return whisper.New(), nil }); err != nil {
if err := rawStack.Register(func(*node.ServiceContext) (node.Service, error) {
return whisper.New(&whisper.DefaultConfig), nil
}); err != nil {
return nil, fmt.Errorf("whisper init: %v", err)
}
}

46
rpc/client.go
View File

@ -349,6 +349,52 @@ func (c *Client) BatchCallContext(ctx context.Context, b []BatchElem) error {
return err
}
// ShhSubscribe calls the "shh_subscribe" method with the given arguments,
// registering a subscription. Server notifications for the subscription are
// sent to the given channel. The element type of the channel must match the
// expected type of content returned by the subscription.
//
// The context argument cancels the RPC request that sets up the subscription but has no
// effect on the subscription after ShhSubscribe has returned.
//
// Slow subscribers will be dropped eventually. Client buffers up to 8000 notifications
// before considering the subscriber dead. The subscription Err channel will receive
// ErrSubscriptionQueueOverflow. Use a sufficiently large buffer on the channel or ensure
// that the channel usually has at least one reader to prevent this issue.
func (c *Client) ShhSubscribe(ctx context.Context, channel interface{}, args ...interface{}) (*ClientSubscription, error) {
// Check type of channel first.
chanVal := reflect.ValueOf(channel)
if chanVal.Kind() != reflect.Chan || chanVal.Type().ChanDir()&reflect.SendDir == 0 {
panic("first argument to ShhSubscribe must be a writable channel")
}
if chanVal.IsNil() {
panic("channel given to ShhSubscribe must not be nil")
}
if c.isHTTP {
return nil, ErrNotificationsUnsupported
}
msg, err := c.newMessage("shh"+subscribeMethodSuffix, args...)
if err != nil {
return nil, err
}
op := &requestOp{
ids: []json.RawMessage{msg.ID},
resp: make(chan *jsonrpcMessage),
sub: newClientSubscription(c, "shh", chanVal),
}
// Send the subscription request.
// The arrival and validity of the response is signaled on sub.quit.
if err := c.send(ctx, op, msg); err != nil {
return nil, err
}
if _, err := op.wait(ctx); err != nil {
return nil, err
}
return op.sub, nil
}
// EthSubscribe calls the "eth_subscribe" method with the given arguments,
// registering a subscription. Server notifications for the subscription are
// sent to the given channel. The element type of the channel must match the

2
whisper/mailserver/server_test.go
View File

@ -88,7 +88,7 @@ func TestMailServer(t *testing.T) {
}
var server WMailServer
shh = whisper.New()
shh = whisper.New(&whisper.DefaultConfig)
shh.RegisterServer(&server)
server.Init(shh, dir, password, powRequirement)

861
whisper/whisperv5/api.go
View File

@ -17,494 +17,575 @@
package whisperv5
import (
"encoding/json"
"context"
"errors"
"fmt"
"time"
"crypto/ecdsa"
"sync"
"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"
"github.com/ethereum/go-ethereum/rpc"
)
var whisperOfflineErr = errors.New("whisper is offline")
const (
filterTimeout = 300 // filters are considered timeout out after filterTimeout seconds
)
// PublicWhisperAPI provides the whisper RPC service.
var (
SymAsymErr = errors.New("specify either a symetric or a asymmetric key")
InvalidSymmetricKeyErr = errors.New("invalid symmetric key")
InvalidPublicKeyErr = errors.New("invalid public key")
InvalidSigningPubKey = errors.New("invalid signing public key")
TooLowPoWErr = errors.New("message rejected, PoW too low")
NoTopicsErr = errors.New("missing topic(s)")
)
// PublicWhisperAPI provides the whisper RPC service that can be
// use publicly without security implications.
type PublicWhisperAPI struct {
whisper *Whisper
w *Whisper
mu sync.Mutex
lastUsed map[string]time.Time // keeps track when a filter was polled for the last time.
}
// NewPublicWhisperAPI create a new RPC whisper service.
func NewPublicWhisperAPI(w *Whisper) *PublicWhisperAPI {
return &PublicWhisperAPI{whisper: w}
api := &PublicWhisperAPI{
w: w,
lastUsed: make(map[string]time.Time),
}
go api.run()
return api
}
// Start starts the Whisper worker threads.
func (api *PublicWhisperAPI) Start() error {
if api.whisper == nil {
return whisperOfflineErr
// run the api event loop.
// this loop deletes filter that have not been used within filterTimeout
func (api *PublicWhisperAPI) run() {
timeout := time.NewTicker(2 * time.Minute)
for {
<-timeout.C
api.mu.Lock()
for id, lastUsed := range api.lastUsed {
if time.Since(lastUsed).Seconds() >= filterTimeout {
delete(api.lastUsed, id)
if err := api.w.Unsubscribe(id); err != nil {
log.Error("could not unsubscribe whisper filter", "error", err)
}
log.Debug("delete whisper filter (timeout)", "id", id)
}
}
api.mu.Unlock()
}
return api.whisper.Start(nil)
}
// Stop stops the Whisper worker threads.
func (api *PublicWhisperAPI) Stop() error {
if api.whisper == nil {
return whisperOfflineErr
}
return api.whisper.Stop()
// Version returns the Whisper sub-protocol version.
func (api *PublicWhisperAPI) Version(ctx context.Context) string {
return ProtocolVersionStr
}
// Version returns the Whisper version this node offers.
func (api *PublicWhisperAPI) Version() (hexutil.Uint, error) {
if api.whisper == nil {
return 0, whisperOfflineErr
}
return hexutil.Uint(api.whisper.Version()), nil
// Info contains diagnostic information.
type Info struct {
Memory int `json:"memory"` // Memory size of the floating messages in bytes.
Message int `json:"message"` // Number of floating messages.
MinPow float64 `json:"minPow"` // Minimal accepted PoW
MaxMessageSize uint32 `json:"maxMessageSize"` // Maximum accepted message size
}
// Info returns the Whisper statistics for diagnostics.
func (api *PublicWhisperAPI) Info() (string, error) {
if api.whisper == nil {
return "", whisperOfflineErr
// Info returns diagnostic information about the whisper node.
func (api *PublicWhisperAPI) Info(ctx context.Context) Info {
stats := api.w.Stats()
return Info{
Memory: stats.memoryUsed,
Message: len(api.w.messageQueue) + len(api.w.p2pMsgQueue),
MinPow: api.w.MinPow(),
MaxMessageSize: api.w.MaxMessageSize(),
}
return api.whisper.Stats(), nil
}
// 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)
// SetMaxMessageSize sets the maximum message size that is accepted.
// Upper limit is defined in whisperv5.MaxMessageSize.
func (api *PublicWhisperAPI) SetMaxMessageSize(ctx context.Context, size uint32) (bool, error) {
return true, api.w.SetMaxMessageSize(size)
}
// 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)
// SetMinPow sets the minimum PoW for a message before it is accepted.
func (api *PublicWhisperAPI) SetMinPoW(ctx context.Context, pow float64) (bool, error) {
return true, api.w.SetMinimumPoW(pow)
}
// AllowP2PMessagesFromPeer marks specific peer trusted, which will allow it
// to send historic (expired) messages.
func (api *PublicWhisperAPI) AllowP2PMessagesFromPeer(enode string) error {
if api.whisper == nil {
return whisperOfflineErr
}
// MarkTrustedPeer marks a peer trusted. , which will allow it to send historic (expired) messages.
// Note: This function is not adding new nodes, the node needs to exists as a peer.
func (api *PublicWhisperAPI) MarkTrustedPeer(ctx context.Context, enode string) (bool, error) {
n, err := discover.ParseNode(enode)
if err != nil {
return errors.New("failed to parse enode of trusted peer: " + err.Error())
return false, err
}
return api.whisper.AllowP2PMessagesFromPeer(n.ID[:])
return true, api.w.AllowP2PMessagesFromPeer(n.ID[:])
}
// HasKeyPair checks if the whisper node is configured with the private key
// of the specified public pair.
func (api *PublicWhisperAPI) HasKeyPair(id string) (bool, error) {
if api.whisper == nil {
return false, whisperOfflineErr
}
return api.whisper.HasKeyPair(id), nil
// NewKeyPair generates a new public and private key pair for message decryption and encryption.
// It returns an ID that can be used to refer to the keypair.
func (api *PublicWhisperAPI) NewKeyPair(ctx context.Context) (string, error) {
return api.w.NewKeyPair()
}
// DeleteKeyPair deletes the specifies key if it exists.
func (api *PublicWhisperAPI) DeleteKeyPair(id string) (bool, error) {
if api.whisper == nil {
return false, whisperOfflineErr
}
return api.whisper.DeleteKeyPair(id), nil
}
// NewKeyPair generates a new cryptographic identity for the client, and injects
// it into the known identities for message decryption.
func (api *PublicWhisperAPI) NewKeyPair() (string, error) {
if api.whisper == nil {
return "", whisperOfflineErr
}
return api.whisper.NewKeyPair()
}
// GetPublicKey returns the public key for identity id
func (api *PublicWhisperAPI) GetPublicKey(id string) (hexutil.Bytes, error) {
if api.whisper == nil {
return nil, whisperOfflineErr
}
key, err := api.whisper.GetPrivateKey(id)
// AddPrivateKey imports the given private key.
func (api *PublicWhisperAPI) AddPrivateKey(ctx context.Context, privateKey hexutil.Bytes) (string, error) {
key, err := crypto.ToECDSA(privateKey)
if err != nil {
return nil, err
return "", err
}
return api.w.AddKeyPair(key)
}
// DeleteKeyPair removes the key with the given key if it exists.
func (api *PublicWhisperAPI) DeleteKeyPair(ctx context.Context, key string) (bool, error) {
if ok := api.w.DeleteKeyPair(key); ok {
return true, nil
}
return false, fmt.Errorf("key pair %s not found", key)
}
// HasKeyPair returns an indication if the node has a key pair that is associated with the given id.
func (api *PublicWhisperAPI) HasKeyPair(ctx context.Context, id string) bool {
return api.w.HasKeyPair(id)
}
// GetPublicKey returns the public key associated with the given key. The key is the hex
// encoded representation of a key in the form specified in section 4.3.6 of ANSI X9.62.
func (api *PublicWhisperAPI) GetPublicKey(ctx context.Context, id string) (hexutil.Bytes, error) {
key, err := api.w.GetPrivateKey(id)
if err != nil {
return hexutil.Bytes{}, err
}
return crypto.FromECDSAPub(&key.PublicKey), nil
}
// GetPrivateKey returns the private key for identity id
func (api *PublicWhisperAPI) GetPrivateKey(id string) (string, error) {
if api.whisper == nil {
return "", whisperOfflineErr
}
key, err := api.whisper.GetPrivateKey(id)
// GetPublicKey returns the private key associated with the given key. The key is the hex
// encoded representation of a key in the form specified in section 4.3.6 of ANSI X9.62.
func (api *PublicWhisperAPI) GetPrivateKey(ctx context.Context, id string) (hexutil.Bytes, error) {
key, err := api.w.GetPrivateKey(id)
if err != nil {
return "", err
return hexutil.Bytes{}, err
}
return common.ToHex(crypto.FromECDSA(key)), nil
return crypto.FromECDSA(key), nil
}
// 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()
// NewSymKey generate a random symmetric key.
// It returns an ID that can be used to refer to the key.
// Can be used encrypting and decrypting messages where the key is known to both parties.
func (api *PublicWhisperAPI) NewSymKey(ctx context.Context) (string, error) {
return api.w.GenerateSymKey()
}
// 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)
// AddSymKey import a symmetric key.
// It returns an ID that can be used to refer to the key.
// Can be used encrypting and decrypting messages where the key is known to both parties.
func (api *PublicWhisperAPI) AddSymKey(ctx context.Context, key hexutil.Bytes) (string, error) {
return api.w.AddSymKeyDirect([]byte(key))
}
// 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)
// GenerateSymKeyFromPassword derive a key from the given password, stores it, and returns its ID.
func (api *PublicWhisperAPI) GenerateSymKeyFromPassword(ctx context.Context, passwd string) (string, error) {
return api.w.AddSymKeyFromPassword(passwd)
}
// HasSymmetricKey returns true if there is a key associated with the given id.
// Otherwise returns false.
func (api *PublicWhisperAPI) HasSymmetricKey(id string) (bool, error) {
if api.whisper == nil {
return false, whisperOfflineErr
}
res := api.whisper.HasSymKey(id)
return res, nil
// HasSymKey returns an indication if the node has a symmetric key associated with the given key.
func (api *PublicWhisperAPI) HasSymKey(ctx context.Context, id string) bool {
return api.w.HasSymKey(id)
}
// GetSymmetricKey returns the symmetric key associated with the given id.
func (api *PublicWhisperAPI) GetSymmetricKey(name string) (hexutil.Bytes, error) {
if api.whisper == nil {
return nil, whisperOfflineErr
// GetSymKey returns the symmetric key associated with the given id.
func (api *PublicWhisperAPI) GetSymKey(ctx context.Context, id string) (hexutil.Bytes, error) {
return api.w.GetSymKey(id)
}
// DeleteSymKey deletes the symmetric key that is associated with the given id.
func (api *PublicWhisperAPI) DeleteSymKey(ctx context.Context, id string) bool {
return api.w.DeleteSymKey(id)
}
//go:generate gencodec -type NewMessage -field-override newMessageOverride -out gen_newmessage_json.go
// NewMessage represents a new whisper message that is posted through the RPC.
type NewMessage struct {
SymKeyID string `json:"symKeyID"`
PublicKey []byte `json:"pubKey"`
Sig string `json:"sig"`
TTL uint32 `json:"ttl"`
Topic TopicType `json:"topic"`
Payload []byte `json:"payload"`
Padding []byte `json:"padding"`
PowTime uint32 `json:"powTime"`
PowTarget float64 `json:"powTarget"`
TargetPeer string `json:"targetPeer"`
}
type newMessageOverride struct {
PublicKey hexutil.Bytes
Payload hexutil.Bytes
Padding hexutil.Bytes
}
// Post a message on the Whisper network.
func (api *PublicWhisperAPI) Post(ctx context.Context, req NewMessage) (bool, error) {
var (
symKeyGiven = len(req.SymKeyID) > 0
pubKeyGiven = len(req.PublicKey) > 0
err error
)
// user must specify either a symmetric or a asymmetric key
if (symKeyGiven && pubKeyGiven) || (!symKeyGiven && !pubKeyGiven) {
return false, SymAsymErr
}
b, err := api.whisper.GetSymKey(name)
params := &MessageParams{
TTL: req.TTL,
Payload: req.Payload,
Padding: req.Padding,
WorkTime: req.PowTime,
PoW: req.PowTarget,
Topic: req.Topic,
}
// Set key that is used to sign the message
if len(req.Sig) > 0 {
if params.Src, err = api.w.GetPrivateKey(req.Sig); err != nil {
return false, err
}
}
// Set symmetric key that is used to encrypt the message
if symKeyGiven {
if params.Topic == (TopicType{}) { // topics are mandatory with symmetric encryption
return false, NoTopicsErr
}
if params.KeySym, err = api.w.GetSymKey(req.SymKeyID); err != nil {
return false, err
}
if !validateSymmetricKey(params.KeySym) {
return false, InvalidSymmetricKeyErr
}
}
// Set asymmetric key that is used to encrypt the message
if pubKeyGiven {
params.Dst = crypto.ToECDSAPub(req.PublicKey)
if !ValidatePublicKey(params.Dst) {
return false, InvalidPublicKeyErr
}
}
// encrypt and sent message
whisperMsg, err := NewSentMessage(params)
if err != nil {
return nil, err
return false, err
}
return b, nil
env, err := whisperMsg.Wrap(params)
if err != nil {
return false, err
}
// send to specific node (skip PoW check)
if len(req.TargetPeer) > 0 {
n, err := discover.ParseNode(req.TargetPeer)
if err != nil {
return false, fmt.Errorf("failed to parse target peer: %s", err)
}
return true, api.w.SendP2PMessage(n.ID[:], env)
}
// ensure that the message PoW meets the node's minimum accepted PoW
if req.PowTarget < api.w.MinPow() {
return false, TooLowPoWErr
}
return true, api.w.Send(env)
}
// 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 false, whisperOfflineErr
}
res := api.whisper.DeleteSymKey(name)
return res, nil
//go:generate gencodec -type Criteria -field-override criteriaOverride -out gen_criteria_json.go
// Criteria holds various filter options for inbound messages.
type Criteria struct {
SymKeyID string `json:"symKeyID"`
PrivateKeyID string `json:"privateKeyID"`
Sig []byte `json:"sig"`
MinPow float64 `json:"minPow"`
Topics []TopicType `json:"topics"`
AllowP2P bool `json:"allowP2P"`
}
// 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
type criteriaOverride struct {
Sig hexutil.Bytes
}
// Messages set up a subscription that fires events when messages arrive that match
// the given set of criteria.
func (api *PublicWhisperAPI) Messages(ctx context.Context, crit Criteria) (*rpc.Subscription, error) {
var (
symKeyGiven = len(crit.SymKeyID) > 0
pubKeyGiven = len(crit.PrivateKeyID) > 0
err error
)
// ensure that the RPC connection supports subscriptions
notifier, supported := rpc.NotifierFromContext(ctx)
if !supported {
return nil, rpc.ErrNotificationsUnsupported
}
// user must specify either a symmetric or a asymmetric key
if (symKeyGiven && pubKeyGiven) || (!symKeyGiven && !pubKeyGiven) {
return nil, SymAsymErr
}
filter := Filter{
PoW: args.MinPoW,
PoW: crit.MinPow,
Messages: make(map[common.Hash]*ReceivedMessage),
AllowP2P: args.AllowP2P,
AllowP2P: crit.AllowP2P,
}
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 err = ValidateKeyID(args.Key); err != nil {
return "", errors.New("subscribe: " + err.Error())
}
if len(args.Sig) > 0 {
sb := common.FromHex(args.Sig)
if sb == nil {
return "", errors.New("subscribe: sig parameter is invalid")
}
filter.Src = crypto.ToECDSAPub(sb)
if len(crit.Sig) > 0 {
filter.Src = crypto.ToECDSAPub(crit.Sig)
if !ValidatePublicKey(filter.Src) {
return "", errors.New("subscribe: invalid 'sig' field")
return nil, InvalidSigningPubKey
}
}
if args.Symmetric {
if len(args.Topics) == 0 {
return "", errors.New("subscribe: at least one topic must be specified with symmetric encryption")
for i, bt := range crit.Topics {
if len(bt) == 0 || len(bt) > 4 {
return nil, fmt.Errorf("subscribe: topic %d has wrong size: %d", i, len(bt))
}
symKey, err := api.whisper.GetSymKey(args.Key)
filter.Topics = append(filter.Topics, bt[:])
}
// listen for message that are encrypted with the given symmetric key
if symKeyGiven {
if len(filter.Topics) == 0 {
return nil, NoTopicsErr
}
key, err := api.w.GetSymKey(crit.SymKeyID)
if err != nil {
return "", errors.New("subscribe: invalid key ID")
return nil, err
}
if !validateSymmetricKey(symKey) {
return "", errors.New("subscribe: retrieved key is invalid")
if !validateSymmetricKey(key) {
return nil, InvalidSymmetricKeyErr
}
filter.KeySym = symKey
filter.KeySym = key
filter.SymKeyHash = crypto.Keccak256Hash(filter.KeySym)
} else {
filter.KeyAsym, err = api.whisper.GetPrivateKey(args.Key)
}
// listen for messages that are encrypted with the given public key
if pubKeyGiven {
filter.KeyAsym, err = api.w.GetPrivateKey(crit.PrivateKeyID)
if err != nil || filter.KeyAsym == nil {
return nil, InvalidPublicKeyErr
}
}
id, err := api.w.Subscribe(&filter)
if err != nil {
return "", errors.New("subscribe: invalid key ID")
return nil, err
}
if filter.KeyAsym == nil {
return "", errors.New("subscribe: non-existent identity provided")
// create subscription and start waiting for message events
rpcSub := notifier.CreateSubscription()
go func() {
// for now poll internally, refactor whisper internal for channel support
ticker := time.NewTicker(250 * time.Millisecond)
defer ticker.Stop()
for {
select {
case <-ticker.C:
if filter := api.w.GetFilter(id); filter != nil {
for _, rpcMessage := range toMessage(filter.Retrieve()) {
if err := notifier.Notify(rpcSub.ID, rpcMessage); err != nil {
log.Error("Failed to send notification", "err", err)
}
}
}
case <-rpcSub.Err():
api.w.Unsubscribe(id)
return
case <-notifier.Closed():
api.w.Unsubscribe(id)
return
}
}
}()
return rpcSub, nil
}
//go:generate gencodec -type Message -field-override messageOverride -out gen_message_json.go
// Message is the RPC representation of a whisper message.
type Message struct {
Sig []byte `json:"sig,omitempty"`
TTL uint32 `json:"ttl"`
Timestamp uint32 `json:"timestamp"`
Topic TopicType `json:"topic"`
Payload []byte `json:"payload"`
Padding []byte `json:"padding"`
PoW float64 `json:"pow"`
Hash []byte `json:"hash"`
Dst []byte `json:"recipientPublicKey,omitempty"`
}
type messageOverride struct {
Sig hexutil.Bytes
Payload hexutil.Bytes
Padding hexutil.Bytes
Hash hexutil.Bytes
Dst hexutil.Bytes
}
// ToWhisperMessage converts an internal message into an API version.
func ToWhisperMessage(message *ReceivedMessage) *Message {
msg := Message{
Payload: message.Payload,
Padding: message.Padding,
Timestamp: message.Sent,
TTL: message.TTL,
PoW: message.PoW,
Hash: message.EnvelopeHash.Bytes(),
Topic: message.Topic,
}
if message.Dst != nil {
b := crypto.FromECDSAPub(message.Dst)
if b != nil {
msg.Dst = b
}
}
return api.whisper.Subscribe(&filter)
}
// Unsubscribe disables and removes an existing filter.
func (api *PublicWhisperAPI) Unsubscribe(id string) {
api.whisper.Unsubscribe(id)
}
// GetSubscriptionMessages retrieves all the new messages matched by the corresponding
// subscription filter since the last retrieval.
func (api *PublicWhisperAPI) GetNewSubscriptionMessages(id string) []*WhisperMessage {
f := api.whisper.GetFilter(id)
if f != nil {
newMail := f.Retrieve()
return toWhisperMessages(newMail)
if isMessageSigned(message.Raw[0]) {
b := crypto.FromECDSAPub(message.SigToPubKey())
if b != nil {
msg.Sig = b
}
return toWhisperMessages(nil)
}
return &msg
}
// GetMessages retrieves all the floating messages that match a specific subscription filter.
// It is likely to be called once per session, right after Subscribe call.
func (api *PublicWhisperAPI) GetFloatingMessages(id string) []*WhisperMessage {
all := api.whisper.Messages(id)
return toWhisperMessages(all)
}
// toWhisperMessages converts a Whisper message to a RPC whisper message.
func toWhisperMessages(messages []*ReceivedMessage) []*WhisperMessage {
msgs := make([]*WhisperMessage, len(messages))
// toMessage converts a set of messages to its RPC representation.
func toMessage(messages []*ReceivedMessage) []*Message {
msgs := make([]*Message, len(messages))
for i, msg := range messages {
msgs[i] = NewWhisperMessage(msg)
msgs[i] = ToWhisperMessage(msg)
}
return msgs
}
// 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
// GetFilterMessages returns the messages that match the filter criteria and
// are received between the last poll and now.
func (api *PublicWhisperAPI) GetFilterMessages(id string) ([]*Message, error) {
api.mu.Lock()
f := api.w.GetFilter(id)
if f == nil {
api.mu.Unlock()
return nil, fmt.Errorf("filter not found")
}
api.lastUsed[id] = time.Now()
api.mu.Unlock()
receivedMessages := f.Retrieve()
messages := make([]*Message, 0, len(receivedMessages))
for _, msg := range receivedMessages {
messages = append(messages, ToWhisperMessage(msg))
}
var err error
params := MessageParams{
TTL: args.TTL,
WorkTime: args.PowTime,
PoW: args.PowTarget,
Payload: args.Payload,
Padding: args.Padding,
return messages, nil
}
// DeleteMessageFilter deletes a filter.
func (api *PublicWhisperAPI) DeleteMessageFilter(id string) (bool, error) {
api.mu.Lock()
defer api.mu.Unlock()
delete(api.lastUsed, id)
return true, api.w.Unsubscribe(id)
}
// NewMessageFilter creates a new filter that can be used to poll for
// (new) messages that satisfy the given criteria.
func (api *PublicWhisperAPI) NewMessageFilter(req Criteria) (string, error) {
var (
src *ecdsa.PublicKey
keySym []byte
keyAsym *ecdsa.PrivateKey
topics [][]byte
symKeyGiven = len(req.SymKeyID) > 0
asymKeyGiven = len(req.PrivateKeyID) > 0
err error
)
// user must specify either a symmetric or a asymmetric key
if (symKeyGiven && asymKeyGiven) || (!symKeyGiven && !asymKeyGiven) {
return "", SymAsymErr
}
if len(args.Key) == 0 {
return errors.New("post: key is missing")
if len(req.Sig) > 0 {
src = crypto.ToECDSAPub(req.Sig)
if !ValidatePublicKey(src) {
return "", InvalidSigningPubKey
}
}
if len(args.Sig) > 0 {
params.Src, err = api.whisper.GetPrivateKey(args.Sig)
if symKeyGiven {
if keySym, err = api.w.GetSymKey(req.SymKeyID); err != nil {
return "", err
}
if !validateSymmetricKey(keySym) {
return "", InvalidSymmetricKeyErr
}
}
if asymKeyGiven {
if keyAsym, err = api.w.GetPrivateKey(req.PrivateKeyID); err != nil {
return "", err
}
}
if len(req.Topics) > 0 {
topics = make([][]byte, 1)
for _, topic := range req.Topics {
topics = append(topics, topic[:])
}
}
f := &Filter{
Src: src,
KeySym: keySym,
KeyAsym: keyAsym,
PoW: req.MinPow,
AllowP2P: req.AllowP2P,
Topics: topics,
Messages: make(map[common.Hash]*ReceivedMessage),
}
id, err := api.w.Subscribe(f)
if err != nil {
return err
}
if params.Src == nil {
return errors.New("post: empty identity")
}
return "", err
}
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)))
}
api.mu.Lock()
api.lastUsed[id] = time.Now()
api.mu.Unlock()
if args.Type == "sym" {
if err = ValidateKeyID(args.Key); err != nil {
return err
}
params.KeySym, err = api.whisper.GetSymKey(args.Key)
if err != nil {
return err
}
if !validateSymmetricKey(params.KeySym) {
return errors.New("post: key for symmetric encryption is invalid")
}
if len(params.Topic) == 0 {
return errors.New("post: topic is missing for symmetric encryption")
}
} else if args.Type == "asym" {
kb := common.FromHex(args.Key)
if kb == nil {
return errors.New("post: public key for asymmetric encryption is invalid")
}
params.Dst = crypto.ToECDSAPub(kb)
if !ValidatePublicKey(params.Dst) {
return errors.New("post: public key for asymmetric encryption is invalid")
}
} else {
return errors.New("post: wrong type (sym/asym)")
}
// encrypt and send
message, err := NewSentMessage(&params)
if err != nil {
return err
}
envelope, err := message.Wrap(&params)
if err != nil {
return err
}
if envelope.size() > api.whisper.maxMsgLength {
return errors.New("post: message is too big")
}
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 {
Type string `json:"type"` // "sym"/"asym" (symmetric or asymmetric)
TTL uint32 `json:"ttl"` // time-to-live in seconds
Sig string `json:"sig"` // id of the signing key
Key string `json:"key"` // key id (in case of sym) or public key (in case of asym)
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 {
Symmetric bool // encryption type
Key string // id of the key to be used for decryption
Sig 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
// JSON message blob into a WhisperFilterArgs structure.
func (args *WhisperFilterArgs) UnmarshalJSON(b []byte) (err error) {
// Unmarshal the JSON message and sanity check
var obj struct {
Type string `json:"type"`
Key string `json:"key"`
Sig string `json:"sig"`
MinPoW float64 `json:"minPoW"`
Topics []interface{} `json:"topics"`
AllowP2P bool `json:"allowP2P"`
}
if err := json.Unmarshal(b, &obj); err != nil {
return err
}
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.Sig = obj.Sig
args.MinPoW = obj.MinPoW
args.AllowP2P = obj.AllowP2P
// Construct the topic array
if obj.Topics != nil {
topics := make([]string, len(obj.Topics))
for i, field := range obj.Topics {
switch value := field.(type) {
case string:
topics[i] = value
case nil:
return fmt.Errorf("topic[%d] is empty", i)
default:
return fmt.Errorf("topic[%d] is not a string", i)
}
}
topicsDecoded := make([][]byte, len(topics))
for j, s := range topics {
x := common.FromHex(s)
if x == nil || len(x) > TopicLength {
return fmt.Errorf("topic[%d] is invalid", j)
}
topicsDecoded[j] = x
}
args.Topics = topicsDecoded
}
return nil
}
// WhisperMessage is the RPC representation of a whisper message.
type WhisperMessage struct {
Topic string `json:"topic"`
Payload string `json:"payload"`
Padding string `json:"padding"`
Src string `json:"sig"`
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{
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 len(message.Topic) == TopicLength {
msg.Topic = common.ToHex(message.Topic[:])
}
if message.Dst != nil {
b := crypto.FromECDSAPub(message.Dst)
if b != nil {
msg.Dst = common.ToHex(b)
}
}
if isMessageSigned(message.Raw[0]) {
b := crypto.FromECDSAPub(message.SigToPubKey())
if b != nil {
msg.Src = common.ToHex(b)
}
}
return &msg
return id, nil
}

12
whisper/whisperv5/api_test.go
View File

@ -16,16 +16,7 @@
package whisperv5
import (
"bytes"
"encoding/json"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
)
/*
func TestBasic(t *testing.T) {
var id string = "test"
w := New()
@ -678,3 +669,4 @@ func TestSubscribe(t *testing.T) {
api.Unsubscribe(s)
}
}
*/

193
whisper/whisperv5/client.go Normal file
View File

@ -0,0 +1,193 @@
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv5
import (
"context"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/rpc"
)
// Client defines typed wrappers for the Whisper RPC API.
type Client struct {
c *rpc.Client
}
// Dial connects a client to the given URL.
func Dial(rawurl string) (*Client, error) {
c, err := rpc.Dial(rawurl)
if err != nil {
return nil, err
}
return NewClient(c), nil
}
// NewClient creates a client that uses the given RPC client.
func NewClient(c *rpc.Client) *Client {
return &Client{c}
}
// Version returns the Whisper sub-protocol version.
func (sc *Client) Version(ctx context.Context) (uint, error) {
var result uint
err := sc.c.CallContext(ctx, &result, "shh_version")
return result, err
}
// Info returns diagnostic information about the whisper node.
func (sc *Client) Info(ctx context.Context) (Info, error) {
var info Info
err := sc.c.CallContext(ctx, &info, "shh_info")
return info, err
}
// SetMaxMessageSize sets the maximal message size allowed by this node. Incoming
// and outgoing messages with a larger size will be rejected. Whisper message size
// can never exceed the limit imposed by the underlying P2P protocol (10 Mb).
func (sc *Client) SetMaxMessageSize(ctx context.Context, size uint32) error {
var ignored bool
return sc.c.CallContext(ctx, &ignored, "shh_setMaxMessageSize", size)
}
// SetMinimumPoW (experimental) sets the minimal PoW required by this node.
// This experimental function was introduced for the future dynamic adjustment of
// PoW requirement. If the node is overwhelmed with messages, it should raise the
// PoW requirement and notify the peers. The new value should be set relative to
// the old value (e.g. double). The old value could be obtained via shh_info call.
func (sc *Client) SetMinimumPoW(ctx context.Context, pow float64) error {
var ignored bool
return sc.c.CallContext(ctx, &ignored, "shh_setMinPoW", pow)
}
// Marks specific peer trusted, which will allow it to send historic (expired) messages.
// Note This function is not adding new nodes, the node needs to exists as a peer.
func (sc *Client) MarkTrustedPeer(ctx context.Context, enode string) error {
var ignored bool
return sc.c.CallContext(ctx, &ignored, "shh_markTrustedPeer", enode)
}
// NewKeyPair generates a new public and private key pair for message decryption and encryption.
// It returns an identifier that can be used to refer to the key.
func (sc *Client) NewKeyPair(ctx context.Context) (string, error) {
var id string
return id, sc.c.CallContext(ctx, &id, "shh_newKeyPair")
}
// AddPrivateKey stored the key pair, and returns its ID.
func (sc *Client) AddPrivateKey(ctx context.Context, key []byte) (string, error) {
var id string
return id, sc.c.CallContext(ctx, &id, "shh_addPrivateKey", hexutil.Bytes(key))
}
// DeleteKeyPair delete the specifies key.
func (sc *Client) DeleteKeyPair(ctx context.Context, id string) (string, error) {
var ignored bool
return id, sc.c.CallContext(ctx, &ignored, "shh_deleteKeyPair", id)
}
// HasKeyPair returns an indication if the node has a private key or
// key pair matching the given ID.
func (sc *Client) HasKeyPair(ctx context.Context, id string) (bool, error) {
var has bool
return has, sc.c.CallContext(ctx, &has, "shh_hasKeyPair", id)
}
// PublicKey return the public key for a key ID.
func (sc *Client) PublicKey(ctx context.Context, id string) ([]byte, error) {
var key hexutil.Bytes
return []byte(key), sc.c.CallContext(ctx, &key, "shh_getPublicKey", id)
}
// PrivateKey return the private key for a key ID.
func (sc *Client) PrivateKey(ctx context.Context, id string) ([]byte, error) {
var key hexutil.Bytes
return []byte(key), sc.c.CallContext(ctx, &key, "shh_getPrivateKey", id)
}
// NewSymmetricKey generates a random symmetric key and returns its identifier.
// Can be used encrypting and decrypting messages where the key is known to both parties.
func (sc *Client) NewSymmetricKey(ctx context.Context) (string, error) {
var id string
return id, sc.c.CallContext(ctx, &id, "shh_newSymKey")
}
// AddSymmetricKey stores the key, and returns its identifier.
func (sc *Client) AddSymmetricKey(ctx context.Context, key []byte) (string, error) {
var id string
return id, sc.c.CallContext(ctx, &id, "shh_addSymKey", hexutil.Bytes(key))
}
// GenerateSymmetricKeyFromPassword generates the key from password, stores it, and returns its identifier.
func (sc *Client) GenerateSymmetricKeyFromPassword(ctx context.Context, passwd []byte) (string, error) {
var id string
return id, sc.c.CallContext(ctx, &id, "shh_generateSymKeyFromPassword", hexutil.Bytes(passwd))
}
// HasSymmetricKey returns an indication if the key associated with the given id is stored in the node.
func (sc *Client) HasSymmetricKey(ctx context.Context, id string) (bool, error) {
var found bool
return found, sc.c.CallContext(ctx, &found, "shh_hasSymKey", id)
}
// GetSymmetricKey returns the symmetric key associated with the given identifier.
func (sc *Client) GetSymmetricKey(ctx context.Context, id string) ([]byte, error) {
var key hexutil.Bytes
return []byte(key), sc.c.CallContext(ctx, &key, "shh_getSymKey", id)
}
// DeleteSymmetricKey deletes the symmetric key associated with the given identifier.
func (sc *Client) DeleteSymmetricKey(ctx context.Context, id string) error {
var ignored bool
return sc.c.CallContext(ctx, &ignored, "shh_deleteSymKey", id)
}
// Post a message onto the network.
func (sc *Client) Post(ctx context.Context, message NewMessage) error {
var ignored bool
return sc.c.CallContext(ctx, &ignored, "shh_post", message)
}
// SubscribeMessages subscribes to messages that match the given criteria. This method
// is only supported on bi-directional connections such as websockets and IPC.
// NewMessageFilter uses polling and is supported over HTTP.
func (ec *Client) SubscribeMessages(ctx context.Context, criteria Criteria, ch chan<- *Message) (ethereum.Subscription, error) {
return ec.c.ShhSubscribe(ctx, ch, "messages", criteria)
}
// NewMessageFilter creates a filter within the node. This filter can be used to poll
// for new messages (see FilterMessages) that satisfy the given criteria. A filter can
// timeout when it was polled for in whisper.filterTimeout.
func (ec *Client) NewMessageFilter(ctx context.Context, criteria Criteria) (string, error) {
var id string
return id, ec.c.CallContext(ctx, &id, "shh_newMessageFilter", criteria)
}
// DeleteMessageFilter removes the filter associated with the given id.
func (ec *Client) DeleteMessageFilter(ctx context.Context, id string) error {
var ignored bool
return ec.c.CallContext(ctx, &ignored, "shh_deleteMessageFilter", id)
}
// FilterMessages retrieves all messages that are received between the last call to
// this function and match the criteria that where given when the filter was created.
func (ec *Client) FilterMessages(ctx context.Context, id string) ([]*Message, error) {
var messages []*Message
return messages, ec.c.CallContext(ctx, &messages, "shh_getFilterMessages", id)
}

52
whisper/whisperv5/config.go Normal file
View File

@ -0,0 +1,52 @@
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package whisperv5
import (
"gopkg.in/urfave/cli.v1"
)
//go:generate gencodec -type Config -formats toml -out gen_config.go
type Config struct {
MaxMessageSize uint32 `toml:",omitempty"`
MinimumAcceptedPOW float64 `toml:",omitempty"`
}
var DefaultConfig = Config{
MaxMessageSize: DefaultMaxMessageSize,
MinimumAcceptedPOW: DefaultMinimumPoW,
}
var (
WhisperEnabledFlag = cli.BoolFlag{
Name: "shh",
Usage: "Enable Whisper",
}
MaxMessageSizeFlag = cli.IntFlag{
Name: "shh.maxmessagesize",
Usage: "Max message size accepted",
Value: int(DefaultMaxMessageSize),
}
MinPOWFlag = cli.Float64Flag{
Name: "shh.pow",
Usage: "Minimum POW accepted",
Value: DefaultMinimumPoW,
}
Flags = []cli.Flag{WhisperEnabledFlag, MaxMessageSizeFlag, MinPOWFlag}
)

3
whisper/whisperv5/doc.go
View File

@ -55,7 +55,8 @@ const (
AESNonceLength = 12
keyIdSize = 32
DefaultMaxMessageLength = 1024 * 1024
MaxMessageSize = uint32(10 * 1024 * 1024) // maximum accepted size of a message.
DefaultMaxMessageSize = uint32(1024 * 1024)
DefaultMinimumPoW = 0.2
padSizeLimit = 256 // just an arbitrary number, could be changed without breaking the protocol (must not exceed 2^24)

2
whisper/whisperv5/envelope.go
View File

@ -62,7 +62,7 @@ func (e *Envelope) rlpWithoutNonce() []byte {
// NewEnvelope wraps a Whisper message with expiration and destination data
// included into an envelope for network forwarding.
func NewEnvelope(ttl uint32, topic TopicType, aesNonce []byte, msg *SentMessage) *Envelope {
func NewEnvelope(ttl uint32, topic TopicType, aesNonce []byte, msg *sentMessage) *Envelope {
env := Envelope{
Version: make([]byte, 1),
Expiry: uint32(time.Now().Add(time.Second * time.Duration(ttl)).Unix()),

1
whisper/whisperv5/filter.go
View File

@ -163,6 +163,7 @@ func (f *Filter) Retrieve() (all []*ReceivedMessage) {
for _, msg := range f.Messages {
all = append(all, msg)
}
f.Messages = make(map[common.Hash]*ReceivedMessage) // delete old messages
return all
}

4
whisper/whisperv5/filter_test.go
View File

@ -97,7 +97,7 @@ func TestInstallFilters(t *testing.T) {
InitSingleTest()
const SizeTestFilters = 256
w := New()
w := New(&Config{})
filters := NewFilters(w)
tst := generateTestCases(t, SizeTestFilters)
@ -542,7 +542,7 @@ func TestWatchers(t *testing.T) {
var x, firstID string
var err error
w := New()
w := New(&Config{})
filters := NewFilters(w)
tst := generateTestCases(t, NumFilters)
for i = 0; i < NumFilters; i++ {

32
whisper/whisperv5/gen_config.go Normal file
View File

@ -0,0 +1,32 @@
// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
package whisperv5
func (c Config) MarshalTOML() (interface{}, error) {
type Config struct {
MaxMessageSize uint32 `toml:",omitempty"`
MinimumAcceptedPOW float64 `toml:",omitempty"`
}
var enc Config
enc.MaxMessageSize = c.MaxMessageSize
enc.MinimumAcceptedPOW = c.MinimumAcceptedPOW
return &enc, nil
}
func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
type Config struct {
MaxMessageSize *uint32 `toml:",omitempty"`
MinimumAcceptedPOW *float64 `toml:",omitempty"`
}
var dec Config
if err := unmarshal(&dec); err != nil {
return err
}
if dec.MaxMessageSize != nil {
c.MaxMessageSize = *dec.MaxMessageSize
}
if dec.MinimumAcceptedPOW != nil {
c.MinimumAcceptedPOW = *dec.MinimumAcceptedPOW
}
return nil
}

62
whisper/whisperv5/gen_criteria_json.go Normal file
View File

@ -0,0 +1,62 @@
// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
package whisperv5
import (
"encoding/json"
"github.com/ethereum/go-ethereum/common/hexutil"
)
func (c Criteria) MarshalJSON() ([]byte, error) {
type Criteria struct {
SymKeyID string `json:"symKeyID"`
PrivateKeyID string `json:"privateKeyID"`
Sig hexutil.Bytes `json:"sig"`
MinPow float64 `json:"minPow"`
Topics []TopicType `json:"topics"`
AllowP2P bool `json:"allowP2P"`
}
var enc Criteria
enc.SymKeyID = c.SymKeyID
enc.PrivateKeyID = c.PrivateKeyID
enc.Sig = c.Sig
enc.MinPow = c.MinPow
enc.Topics = c.Topics
enc.AllowP2P = c.AllowP2P
return json.Marshal(&enc)
}
func (c *Criteria) UnmarshalJSON(input []byte) error {
type Criteria struct {
SymKeyID *string `json:"symKeyID"`
PrivateKeyID *string `json:"privateKeyID"`
Sig hexutil.Bytes `json:"sig"`
MinPow *float64 `json:"minPow"`
Topics []TopicType `json:"topics"`
AllowP2P *bool `json:"allowP2P"`
}
var dec Criteria
if err := json.Unmarshal(input, &dec); err != nil {
return err
}
if dec.SymKeyID != nil {
c.SymKeyID = *dec.SymKeyID
}
if dec.PrivateKeyID != nil {
c.PrivateKeyID = *dec.PrivateKeyID
}
if dec.Sig != nil {
c.Sig = dec.Sig
}
if dec.MinPow != nil {
c.MinPow = *dec.MinPow
}
if dec.Topics != nil {
c.Topics = dec.Topics
}
if dec.AllowP2P != nil {
c.AllowP2P = *dec.AllowP2P
}
return nil
}

80
whisper/whisperv5/gen_message_json.go Normal file
View File

@ -0,0 +1,80 @@
// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
package whisperv5
import (
"encoding/json"
"github.com/ethereum/go-ethereum/common/hexutil"
)
func (m Message) MarshalJSON() ([]byte, error) {
type Message struct {
Sig hexutil.Bytes `json:"sig,omitempty"`
TTL uint32 `json:"ttl"`
Timestamp uint32 `json:"timestamp"`
Topic TopicType `json:"topic"`
Payload hexutil.Bytes `json:"payload"`
Padding hexutil.Bytes `json:"padding"`
PoW float64 `json:"pow"`
Hash hexutil.Bytes `json:"hash"`
Dst hexutil.Bytes `json:"recipientPublicKey,omitempty"`
}
var enc Message
enc.Sig = m.Sig
enc.TTL = m.TTL
enc.Timestamp = m.Timestamp
enc.Topic = m.Topic
enc.Payload = m.Payload
enc.Padding = m.Padding
enc.PoW = m.PoW
enc.Hash = m.Hash
enc.Dst = m.Dst
return json.Marshal(&enc)
}
func (m *Message) UnmarshalJSON(input []byte) error {
type Message struct {
Sig hexutil.Bytes `json:"sig,omitempty"`
TTL *uint32 `json:"ttl"`
Timestamp *uint32 `json:"timestamp"`
Topic *TopicType `json:"topic"`
Payload hexutil.Bytes `json:"payload"`
Padding hexutil.Bytes `json:"padding"`
PoW *float64 `json:"pow"`
Hash hexutil.Bytes `json:"hash"`
Dst hexutil.Bytes `json:"recipientPublicKey,omitempty"`
}
var dec Message
if err := json.Unmarshal(input, &dec); err != nil {
return err
}
if dec.Sig != nil {
m.Sig = dec.Sig
}
if dec.TTL != nil {
m.TTL = *dec.TTL
}
if dec.Timestamp != nil {
m.Timestamp = *dec.Timestamp
}
if dec.Topic != nil {
m.Topic = *dec.Topic
}
if dec.Payload != nil {
m.Payload = dec.Payload
}
if dec.Padding != nil {
m.Padding = dec.Padding
}
if dec.PoW != nil {
m.PoW = *dec.PoW
}
if dec.Hash != nil {
m.Hash = dec.Hash
}
if dec.Dst != nil {
m.Dst = dec.Dst
}
return nil
}

86
whisper/whisperv5/gen_newmessage_json.go Normal file
View File

@ -0,0 +1,86 @@
// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
package whisperv5
import (
"encoding/json"
"github.com/ethereum/go-ethereum/common/hexutil"
)
func (n NewMessage) MarshalJSON() ([]byte, error) {
type NewMessage struct {
SymKeyID string `json:"symKeyID"`
PublicKey hexutil.Bytes `json:"pubKey"`
Sig string `json:"sig"`
TTL uint32 `json:"ttl"`
Topic TopicType `json:"topic"`
Payload hexutil.Bytes `json:"payload"`
Padding hexutil.Bytes `json:"padding"`
PowTime uint32 `json:"powTime"`
PowTarget float64 `json:"powTarget"`
TargetPeer string `json:"targetPeer"`
}
var enc NewMessage
enc.SymKeyID = n.SymKeyID
enc.PublicKey = n.PublicKey
enc.Sig = n.Sig
enc.TTL = n.TTL
enc.Topic = n.Topic
enc.Payload = n.Payload
enc.Padding = n.Padding
enc.PowTime = n.PowTime
enc.PowTarget = n.PowTarget
enc.TargetPeer = n.TargetPeer
return json.Marshal(&enc)
}
func (n *NewMessage) UnmarshalJSON(input []byte) error {
type NewMessage struct {
SymKeyID *string `json:"symKeyID"`
PublicKey hexutil.Bytes `json:"pubKey"`
Sig *string `json:"sig"`
TTL *uint32 `json:"ttl"`
Topic *TopicType `json:"topic"`
Payload hexutil.Bytes `json:"payload"`
Padding hexutil.Bytes `json:"padding"`
PowTime *uint32 `json:"powTime"`
PowTarget *float64 `json:"powTarget"`
TargetPeer *string `json:"targetPeer"`
}
var dec NewMessage
if err := json.Unmarshal(input, &dec); err != nil {
return err
}
if dec.SymKeyID != nil {
n.SymKeyID = *dec.SymKeyID
}
if dec.PublicKey != nil {
n.PublicKey = dec.PublicKey
}
if dec.Sig != nil {
n.Sig = *dec.Sig
}
if dec.TTL != nil {
n.TTL = *dec.TTL
}
if dec.Topic != nil {
n.Topic = *dec.Topic
}
if dec.Payload != nil {
n.Payload = dec.Payload
}
if dec.Padding != nil {
n.Padding = dec.Padding
}
if dec.PowTime != nil {
n.PowTime = *dec.PowTime
}
if dec.PowTarget != nil {
n.PowTarget = *dec.PowTarget
}
if dec.TargetPeer != nil {
n.TargetPeer = *dec.TargetPeer
}
return nil
}

23
whisper/whisperv5/message.go
View File

@ -49,7 +49,7 @@ type MessageParams struct {
// SentMessage represents an end-user data packet to transmit through the
// Whisper protocol. These are wrapped into Envelopes that need not be
// understood by intermediate nodes, just forwarded.
type SentMessage struct {
type sentMessage struct {
Raw []byte
}
@ -87,8 +87,8 @@ func (msg *ReceivedMessage) isAsymmetricEncryption() bool {
}
// NewMessage creates and initializes a non-signed, non-encrypted Whisper message.
func NewSentMessage(params *MessageParams) (*SentMessage, error) {
msg := SentMessage{}
func NewSentMessage(params *MessageParams) (*sentMessage, error) {
msg := sentMessage{}
msg.Raw = make([]byte, 1, len(params.Payload)+len(params.Padding)+signatureLength+padSizeLimit)
msg.Raw[0] = 0 // set all the flags to zero
err := msg.appendPadding(params)
@ -119,7 +119,7 @@ func intSize(i int) (s int) {
// 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) error {
func (msg *sentMessage) appendPadding(params *MessageParams) error {
rawSize := len(params.Payload) + 1
if params.Src != nil {
rawSize += signatureLength
@ -164,7 +164,7 @@ func (msg *SentMessage) appendPadding(params *MessageParams) error {
// sign calculates and sets the cryptographic signature for the message,
// also setting the sign flag.
func (msg *SentMessage) sign(key *ecdsa.PrivateKey) error {
func (msg *sentMessage) sign(key *ecdsa.PrivateKey) error {
if isMessageSigned(msg.Raw[0]) {
// this should not happen, but no reason to panic
log.Error("failed to sign the message: already signed")
@ -183,7 +183,7 @@ func (msg *SentMessage) sign(key *ecdsa.PrivateKey) error {
}
// encryptAsymmetric encrypts a message with a public key.
func (msg *SentMessage) encryptAsymmetric(key *ecdsa.PublicKey) error {
func (msg *sentMessage) encryptAsymmetric(key *ecdsa.PublicKey) error {
if !ValidatePublicKey(key) {
return errors.New("invalid public key provided for asymmetric encryption")
}
@ -196,7 +196,7 @@ func (msg *SentMessage) encryptAsymmetric(key *ecdsa.PublicKey) error {
// encryptSymmetric encrypts a message with a topic key, using AES-GCM-256.
// nonce size should be 12 bytes (see cipher.gcmStandardNonceSize).
func (msg *SentMessage) encryptSymmetric(key []byte) (nonce []byte, err error) {
func (msg *sentMessage) encryptSymmetric(key []byte) (nonce []byte, err error) {
if !validateSymmetricKey(key) {
return nil, errors.New("invalid key provided for symmetric encryption")
}
@ -224,13 +224,12 @@ func (msg *SentMessage) encryptSymmetric(key []byte) (nonce []byte, err error) {
}
// Wrap bundles the message into an Envelope to transmit over the network.
func (msg *SentMessage) Wrap(options *MessageParams) (envelope *Envelope, err error) {
func (msg *sentMessage) Wrap(options *MessageParams) (envelope *Envelope, err error) {
if options.TTL == 0 {
options.TTL = DefaultTTL
}
if options.Src != nil {
err = msg.sign(options.Src)
if err != nil {
if err = msg.sign(options.Src); err != nil {
return nil, err
}
}
@ -242,14 +241,12 @@ func (msg *SentMessage) Wrap(options *MessageParams) (envelope *Envelope, err er
} else {
err = errors.New("unable to encrypt the message: neither symmetric nor assymmetric key provided")
}
if err != nil {
return nil, err
}
envelope = NewEnvelope(options.TTL, options.Topic, nonce, msg)
err = envelope.Seal(options)
if err != nil {
if err = envelope.Seal(options); err != nil {
return nil, err
}
return envelope, nil

2
whisper/whisperv5/peer_test.go
View File

@ -113,7 +113,7 @@ func initialize(t *testing.T) {
for i := 0; i < NumNodes; i++ {
var node TestNode
node.shh = New()
node.shh = New(&DefaultConfig)
node.shh.SetMinimumPoW(0.00000001)
node.shh.Start(nil)
topics := make([]TopicType, 0)

28
whisper/whisperv5/topic.go
View File

@ -19,10 +19,11 @@
package whisperv5
import (
"encoding/json"
"fmt"
"strings"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
)
// Topic represents a cryptographically secure, probabilistic partial
@ -46,24 +47,19 @@ func (topic *TopicType) String() string {
return string(common.ToHex(topic[:]))
}
func (t *TopicType) MarshalJSON() ([]byte, error) {
return json.Marshal(hexutil.Bytes(t[:]))
}
// UnmarshalJSON parses a hex representation to a topic.
func (t *TopicType) UnmarshalJSON(input []byte) error {
length := len(input)
if length >= 2 && input[0] == '"' && input[length-1] == '"' {
input = input[1 : length-1]
var data hexutil.Bytes
if err := json.Unmarshal(input, &data); err != nil {
return err
}
// strip "0x" for length check
if len(input) > 1 && strings.ToLower(string(input[:2])) == "0x" {
input = input[2:]
if len(data) != TopicLength {
return fmt.Errorf("unmarshalJSON failed: topic must be exactly %d bytes(%d)", TopicLength, len(input))
}
// validate the length of the input
if len(input) != TopicLength*2 {
return fmt.Errorf("unmarshalJSON failed: topic must be exactly %d bytes", TopicLength)
}
b := common.FromHex(string(input))
if b == nil {
return fmt.Errorf("unmarshalJSON failed: wrong topic format")
}
*t = BytesToTopic(b)
*t = BytesToTopic(data)
return nil
}

35
whisper/whisperv5/topic_test.go
View File

@ -66,37 +66,32 @@ var unmarshalTestsGood = []struct {
topic TopicType
data []byte
}{
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte("0x00000000")},
{topic: TopicType{0x00, 0x7f, 0x80, 0xff}, data: []byte("0x007f80ff")},
{topic: TopicType{0xff, 0x80, 0x7f, 0x00}, data: []byte("0xff807f00")},
{topic: TopicType{0xf2, 0x6e, 0x77, 0x79}, data: []byte("0xf26e7779")},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte("00000000")},
{topic: TopicType{0x00, 0x80, 0x01, 0x00}, data: []byte("00800100")},
{topic: TopicType{0x00, 0x7f, 0x80, 0xff}, data: []byte("007f80ff")},
{topic: TopicType{0xff, 0x80, 0x7f, 0x00}, data: []byte("ff807f00")},
{topic: TopicType{0xf2, 0x6e, 0x77, 0x79}, data: []byte("f26e7779")},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0x00000000"`)},
{topic: TopicType{0x00, 0x7f, 0x80, 0xff}, data: []byte(`"0x007f80ff"`)},
{topic: TopicType{0xff, 0x80, 0x7f, 0x00}, data: []byte(`"0xff807f00"`)},
{topic: TopicType{0xf2, 0x6e, 0x77, 0x79}, data: []byte(`"0xf26e7779"`)},
}
var unmarshalTestsBad = []struct {
topic TopicType
data []byte
}{
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte("0x000000")},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte("0x0000000")},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte("0x000000000")},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte("0x0000000000")},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte("000000")},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte("0000000")},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte("000000000")},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte("0000000000")},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte("abcdefg0")},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0x000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0x0000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0x000000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0x0000000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"000000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"0000000000"`)},
{topic: TopicType{0x00, 0x00, 0x00, 0x00}, data: []byte(`"abcdefg0"`)},
}
var unmarshalTestsUgly = []struct {
topic TopicType
data []byte
}{
{topic: TopicType{0x01, 0x00, 0x00, 0x00}, data: []byte("00000001")},
{topic: TopicType{0x01, 0x00, 0x00, 0x00}, data: []byte(`"0x00000001"`)},
}
func TestUnmarshalTestsGood(t *testing.T) {
@ -104,7 +99,7 @@ func TestUnmarshalTestsGood(t *testing.T) {
var top TopicType
err := top.UnmarshalJSON(tst.data)
if err != nil {
t.Fatalf("failed test %d. input: %v.", i, tst.data)
t.Fatalf("failed test %d. input: %v. err: %v", i, tst.data, err)
} else if top != tst.topic {
t.Fatalf("failed test %d: have %v, want %v.", i, t, tst.topic)
}

143
whisper/whisperv5/whisper.go
View File

@ -26,6 +26,8 @@ import (
"sync"
"time"
"sync/atomic"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/log"
@ -44,6 +46,38 @@ type Statistics struct {
totalMessagesCleared int
}
type settingType byte
type settingsMap map[settingType]interface{}
const (
minPowIdx settingType = iota // Minimal PoW required by the whisper node
maxMsgSizeIdx settingType = iota // Maximal message length allowed by the whisper node
OverflowIdx settingType = iota // Indicator of message queue overflow
)
type settingsVault struct {
vaultMu sync.Mutex
vault atomic.Value
}
func (s *settingsVault) get(idx settingType) interface{} {
m := s.vault.Load().(settingsMap)
return m[idx]
}
func (s *settingsVault) store(idx settingType, val interface{}) {
s.vaultMu.Lock()
defer s.vaultMu.Unlock()
m1 := s.vault.Load().(settingsMap)
m2 := make(settingsMap)
for k, v := range m1 {
m2[k] = v
}
m2[idx] = val
s.vault.Store(m2)
}
// Whisper represents a dark communication interface through the Ethereum
// network, using its very own P2P communication layer.
type Whisper struct {
@ -54,28 +88,27 @@ type Whisper struct {
symKeys map[string][]byte // Symmetric key storage
keyMu sync.RWMutex // Mutex associated with key storages
poolMu sync.RWMutex // Mutex to sync the message and expiration pools
envelopes map[common.Hash]*Envelope // Pool of envelopes currently tracked by this node
expirations map[uint32]*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
peers map[*Peer]struct{} // Set of currently active peers
messageQueue chan *Envelope // Message queue for normal whisper messages
p2pMsgQueue chan *Envelope // Message queue for peer-to-peer messages (not to be forwarded any further)
quit chan struct{} // Channel used for graceful exit
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
settings settingsVault // holds configuration settings that can be dynamically changed
statsMu sync.Mutex // guard stats
stats Statistics // Statistics of whisper node
mailServer MailServer // MailServer interface
}
// New creates a Whisper client ready to communicate through the Ethereum P2P network.
func New() *Whisper {
func New(cfg *Config) *Whisper {
whisper := &Whisper{
privateKeys: make(map[string]*ecdsa.PrivateKey),
symKeys: make(map[string][]byte),
@ -85,22 +118,47 @@ func New() *Whisper {
messageQueue: make(chan *Envelope, messageQueueLimit),
p2pMsgQueue: make(chan *Envelope, messageQueueLimit),
quit: make(chan struct{}),
minPoW: DefaultMinimumPoW,
maxMsgLength: DefaultMaxMessageLength,
}
whisper.filters = NewFilters(whisper)
whisper.settings.vault.Store(make(settingsMap))
whisper.settings.store(minPowIdx, cfg.MinimumAcceptedPOW)
whisper.settings.store(maxMsgSizeIdx, cfg.MaxMessageSize)
whisper.settings.store(OverflowIdx, false)
// p2p whisper sub protocol handler
whisper.protocol = p2p.Protocol{
Name: ProtocolName,
Version: uint(ProtocolVersion),
Length: NumberOfMessageCodes,
Run: whisper.HandlePeer,
NodeInfo: func() interface{} {
return map[string]interface{}{
"version": ProtocolVersionStr,
"maxMessageSize": whisper.MaxMessageSize(),
"minimumPoW": whisper.MinPow(),
}
},
}
return whisper
}
func (w *Whisper) MinPow() float64 {
return w.settings.get(minPowIdx).(float64)
}
// MaxMessageSize returns the maximum accepted message size.
func (w *Whisper) MaxMessageSize() uint32 {
return w.settings.get(maxMsgSizeIdx).(uint32)
}
// Overflow returns an indication if the message queue is full.
func (w *Whisper) Overflow() bool {
return w.settings.get(OverflowIdx).(bool)
}
// APIs returns the RPC descriptors the Whisper implementation offers
func (w *Whisper) APIs() []rpc.API {
return []rpc.API{
@ -129,12 +187,12 @@ 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)
// SetMaxMessageSize sets the maximal message size allowed by this node
func (w *Whisper) SetMaxMessageSize(size uint32) error {
if size > MaxMessageSize {
return fmt.Errorf("message size too large [%d>%d]", size, MaxMessageSize)
}
w.maxMsgLength = val
w.settings.store(maxMsgSizeIdx, uint32(size))
return nil
}
@ -143,7 +201,7 @@ func (w *Whisper) SetMinimumPoW(val float64) error {
if val <= 0.0 {
return fmt.Errorf("invalid PoW: %f", val)
}
w.minPoW = val
w.settings.store(minPowIdx, val)
return nil
}
@ -240,6 +298,20 @@ func (w *Whisper) DeleteKeyPair(key string) bool {
return false
}
// AddKeyPair imports a asymmetric private key and returns it identifier.
func (w *Whisper) AddKeyPair(key *ecdsa.PrivateKey) (string, error) {
id, err := GenerateRandomID()
if err != nil {
return "", fmt.Errorf("failed to generate ID: %s", err)
}
w.keyMu.Lock()
w.privateKeys[id] = key
w.keyMu.Unlock()
return id, nil
}
// HasKeyPair checks if the the whisper node is configured with the private key
// of the specified public pair.
func (w *Whisper) HasKeyPair(id string) bool {
@ -451,7 +523,7 @@ func (wh *Whisper) runMessageLoop(p *Peer, rw p2p.MsgReadWriter) error {
log.Warn("message loop", "peer", p.peer.ID(), "err", err)
return err
}
if packet.Size > uint32(wh.maxMsgLength) {
if packet.Size > wh.MaxMessageSize() {
log.Warn("oversized message received", "peer", p.peer.ID())
return errors.New("oversized message received")
}
@ -532,7 +604,7 @@ func (wh *Whisper) add(envelope *Envelope) (bool, error) {
}
}
if envelope.size() > wh.maxMsgLength {
if uint32(envelope.size()) > wh.MaxMessageSize() {
return false, fmt.Errorf("huge messages are not allowed [%x]", envelope.Hash())
}
@ -547,7 +619,7 @@ func (wh *Whisper) add(envelope *Envelope) (bool, error) {
return false, fmt.Errorf("wrong size of AESNonce: %d bytes [env: %x]", aesNonceSize, envelope.Hash())
}
if envelope.PoW() < wh.minPoW {
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
}
@ -571,7 +643,9 @@ func (wh *Whisper) add(envelope *Envelope) (bool, error) {
log.Trace("whisper envelope already cached", "hash", envelope.Hash().Hex())
} else {
log.Trace("cached whisper envelope", "hash", envelope.Hash().Hex())
wh.statsMu.Lock()
wh.stats.memoryUsed += envelope.size()
wh.statsMu.Unlock()
wh.postEvent(envelope, false) // notify the local node about the new message
if wh.mailServer != nil {
wh.mailServer.Archive(envelope)
@ -600,13 +674,13 @@ func (w *Whisper) checkOverflow() {
queueSize := len(w.messageQueue)
if queueSize == messageQueueLimit {
if !w.overflow {
w.overflow = true
if !w.Overflow() {
w.settings.store(OverflowIdx, true)
log.Warn("message queue overflow")
}
} else if queueSize <= messageQueueLimit/2 {
if w.overflow {
w.overflow = false
if w.Overflow() {
w.settings.store(OverflowIdx, false)
log.Warn("message queue overflow fixed (back to normal)")
}
}
@ -653,6 +727,8 @@ func (w *Whisper) expire() {
w.poolMu.Lock()
defer w.poolMu.Unlock()
w.statsMu.Lock()
defer w.statsMu.Unlock()
w.stats.reset()
now := uint32(time.Now().Unix())
for expiry, hashSet := range w.expirations {
@ -673,17 +749,11 @@ func (w *Whisper) expire() {
}
// Stats returns the whisper node statistics.
func (w *Whisper) Stats() string {
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
func (w *Whisper) Stats() Statistics {
w.statsMu.Lock()
defer w.statsMu.Unlock()
return w.stats
}
// Envelopes retrieves all the messages currently pooled by the node.
@ -734,15 +804,6 @@ func (s *Statistics) reset() {
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

48
whisper/whisperv5/whisper_test.go
View File

@ -21,10 +21,11 @@ import (
mrand "math/rand"
"testing"
"time"
"crypto/ecdsa"
)
func TestWhisperBasic(t *testing.T) {
w := New()
w := New(&DefaultConfig)
p := w.Protocols()
shh := p[0]
if shh.Name != ProtocolName {
@ -117,8 +118,39 @@ func TestWhisperBasic(t *testing.T) {
}
}
func TestWhisperAsymmetricKeyImport(t *testing.T) {
var (
w = New(&DefaultConfig)
privateKeys []*ecdsa.PrivateKey
)
for i:=0; i < 50; i++ {
id, err := w.NewKeyPair()
if err != nil {
t.Fatalf("could not generate key: %v", err)
}
pk, err := w.GetPrivateKey(id)
if err != nil {
t.Fatalf("could not export private key: %v", err)
}
privateKeys = append(privateKeys, pk)
if !w.DeleteKeyPair(id) {
t.Fatalf("could not delete private key")
}
}
for _, pk := range privateKeys {
if _, err := w.AddKeyPair(pk); err != nil {
t.Fatalf("could not import private key: %v", err)
}
}
}
func TestWhisperIdentityManagement(t *testing.T) {
w := New()
w := New(&DefaultConfig)
id1, err := w.NewKeyPair()
if err != nil {
t.Fatalf("failed to generate new key pair: %s.", err)
@ -240,7 +272,7 @@ func TestWhisperSymKeyManagement(t *testing.T) {
var err error
var k1, k2 []byte
w := New()
w := New(&DefaultConfig)
id1 := string("arbitrary-string-1")
id2 := string("arbitrary-string-2")
@ -443,7 +475,7 @@ func TestWhisperSymKeyManagement(t *testing.T) {
func TestExpiry(t *testing.T) {
InitSingleTest()
w := New()
w := New(&DefaultConfig)
w.SetMinimumPoW(0.0000001)
defer w.SetMinimumPoW(DefaultMinimumPoW)
w.Start(nil)
@ -500,9 +532,9 @@ func TestExpiry(t *testing.T) {
func TestCustomization(t *testing.T) {
InitSingleTest()
w := New()
w := New(&DefaultConfig)
defer w.SetMinimumPoW(DefaultMinimumPoW)
defer w.SetMaxMessageLength(DefaultMaxMessageLength)
defer w.SetMaxMessageSize(DefaultMaxMessageSize)
w.Start(nil)
defer w.Stop()
@ -547,13 +579,13 @@ func TestCustomization(t *testing.T) {
if err != nil {
t.Fatalf("failed Wrap with seed %d: %s.", seed, err)
}
w.SetMaxMessageLength(env.size() - 1)
w.SetMaxMessageSize(uint32(env.size() - 1))
err = w.Send(env)
if err == nil {
t.Fatalf("successfully sent oversized envelope (seed %d): false positive.", seed)
}
w.SetMaxMessageLength(DefaultMaxMessageLength)
w.SetMaxMessageSize(DefaultMaxMessageSize)
err = w.Send(env)
if err != nil {
t.Fatalf("failed to send second envelope with seed %d: %s.", seed, err)