mirror of https://github.com/poanetwork/quorum.git
505 lines
15 KiB
Go
505 lines
15 KiB
Go
// Copyright 2016 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package shhapi
|
|
|
|
import (
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
mathrand "math/rand"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/logger"
|
|
"github.com/ethereum/go-ethereum/logger/glog"
|
|
"github.com/ethereum/go-ethereum/rpc"
|
|
"github.com/ethereum/go-ethereum/whisper/whisperv5"
|
|
)
|
|
|
|
var whisperOffLineErr = errors.New("whisper is offline")
|
|
|
|
// PublicWhisperAPI provides the whisper RPC service.
|
|
type PublicWhisperAPI struct {
|
|
whisper *whisperv5.Whisper
|
|
}
|
|
|
|
// NewPublicWhisperAPI create a new RPC whisper service.
|
|
func NewPublicWhisperAPI() *PublicWhisperAPI {
|
|
w := whisperv5.NewWhisper(nil)
|
|
return &PublicWhisperAPI{whisper: w}
|
|
}
|
|
|
|
// APIs returns the RPC descriptors the Whisper implementation offers
|
|
func APIs() []rpc.API {
|
|
return []rpc.API{
|
|
{
|
|
Namespace: whisperv5.ProtocolName,
|
|
Version: whisperv5.ProtocolVersionStr,
|
|
Service: NewPublicWhisperAPI(),
|
|
Public: true,
|
|
},
|
|
}
|
|
}
|
|
|
|
// Version returns the Whisper version this node offers.
|
|
func (api *PublicWhisperAPI) Version() (*rpc.HexNumber, error) {
|
|
if api.whisper == nil {
|
|
return rpc.NewHexNumber(0), whisperOffLineErr
|
|
}
|
|
return rpc.NewHexNumber(api.whisper.Version()), nil
|
|
}
|
|
|
|
// MarkPeerTrusted marks specific peer trusted, which will allow it
|
|
// to send historic (expired) messages.
|
|
func (api *PublicWhisperAPI) MarkPeerTrusted(peerID rpc.HexBytes) error {
|
|
if api.whisper == nil {
|
|
return whisperOffLineErr
|
|
}
|
|
return api.whisper.MarkPeerTrusted(peerID)
|
|
}
|
|
|
|
// 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 rpc.HexBytes, data rpc.HexBytes) 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
|
|
// of the specified public pair.
|
|
func (api *PublicWhisperAPI) HasIdentity(identity string) (bool, error) {
|
|
if api.whisper == nil {
|
|
return false, whisperOffLineErr
|
|
}
|
|
return api.whisper.HasIdentity(identity), nil
|
|
}
|
|
|
|
// DeleteIdentity deletes the specifies key if it exists.
|
|
func (api *PublicWhisperAPI) DeleteIdentity(identity string) error {
|
|
if api.whisper == nil {
|
|
return whisperOffLineErr
|
|
}
|
|
api.whisper.DeleteIdentity(identity)
|
|
return nil
|
|
}
|
|
|
|
// NewIdentity generates a new cryptographic identity for the client, and injects
|
|
// it into the known identities for message decryption.
|
|
func (api *PublicWhisperAPI) NewIdentity() (string, error) {
|
|
if api.whisper == nil {
|
|
return "", whisperOffLineErr
|
|
}
|
|
identity := api.whisper.NewIdentity()
|
|
return common.ToHex(crypto.FromECDSAPub(&identity.PublicKey)), nil
|
|
}
|
|
|
|
// 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 {
|
|
if api.whisper == nil {
|
|
return whisperOffLineErr
|
|
}
|
|
return api.whisper.GenerateSymKey(name)
|
|
}
|
|
|
|
// AddSymKey stores the key under the 'name' id.
|
|
func (api *PublicWhisperAPI) AddSymKey(name string, key []byte) error {
|
|
if api.whisper == nil {
|
|
return whisperOffLineErr
|
|
}
|
|
return api.whisper.AddSymKey(name, key)
|
|
}
|
|
|
|
// HasSymKey returns true if there is a key associated with the name string.
|
|
// Otherwise returns false.
|
|
func (api *PublicWhisperAPI) HasSymKey(name string) (bool, error) {
|
|
if api.whisper == nil {
|
|
return false, whisperOffLineErr
|
|
}
|
|
res := api.whisper.HasSymKey(name)
|
|
return res, nil
|
|
}
|
|
|
|
// DeleteSymKey deletes the key associated with the name string if it exists.
|
|
func (api *PublicWhisperAPI) DeleteSymKey(name string) error {
|
|
if api.whisper == nil {
|
|
return whisperOffLineErr
|
|
}
|
|
api.whisper.DeleteSymKey(name)
|
|
return 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) (*rpc.HexNumber, error) {
|
|
if api.whisper == nil {
|
|
return nil, whisperOffLineErr
|
|
}
|
|
|
|
filter := whisperv5.Filter{
|
|
Src: crypto.ToECDSAPub(args.From),
|
|
KeySym: api.whisper.GetSymKey(args.KeyName),
|
|
PoW: args.PoW,
|
|
Messages: make(map[common.Hash]*whisperv5.ReceivedMessage),
|
|
AcceptP2P: args.AcceptP2P,
|
|
}
|
|
|
|
if len(filter.KeySym) > 0 {
|
|
filter.SymKeyHash = crypto.Keccak256Hash(filter.KeySym)
|
|
}
|
|
|
|
for _, t := range args.Topics {
|
|
filter.Topics = append(filter.Topics, t)
|
|
}
|
|
|
|
if len(args.Topics) == 0 {
|
|
info := "NewFilter: at least one topic must be specified"
|
|
glog.V(logger.Error).Infof(info)
|
|
return nil, errors.New(info)
|
|
}
|
|
|
|
if len(args.KeyName) != 0 && len(filter.KeySym) == 0 {
|
|
info := "NewFilter: key was not found by name: " + args.KeyName
|
|
glog.V(logger.Error).Infof(info)
|
|
return nil, errors.New(info)
|
|
}
|
|
|
|
if len(args.To) == 0 && len(filter.KeySym) == 0 {
|
|
info := "NewFilter: filter must contain either symmetric or asymmetric key"
|
|
glog.V(logger.Error).Infof(info)
|
|
return nil, errors.New(info)
|
|
}
|
|
|
|
if len(args.To) != 0 && len(filter.KeySym) != 0 {
|
|
info := "NewFilter: filter must not contain both symmetric and asymmetric key"
|
|
glog.V(logger.Error).Infof(info)
|
|
return nil, errors.New(info)
|
|
}
|
|
|
|
if len(args.To) > 0 {
|
|
dst := crypto.ToECDSAPub(args.To)
|
|
if !whisperv5.ValidatePublicKey(dst) {
|
|
info := "NewFilter: Invalid 'To' address"
|
|
glog.V(logger.Error).Infof(info)
|
|
return nil, errors.New(info)
|
|
}
|
|
filter.KeyAsym = api.whisper.GetIdentity(string(args.To))
|
|
if filter.KeyAsym == nil {
|
|
info := "NewFilter: non-existent identity provided"
|
|
glog.V(logger.Error).Infof(info)
|
|
return nil, errors.New(info)
|
|
}
|
|
}
|
|
|
|
if len(args.From) > 0 {
|
|
if !whisperv5.ValidatePublicKey(filter.Src) {
|
|
info := "NewFilter: Invalid 'From' address"
|
|
glog.V(logger.Error).Infof(info)
|
|
return nil, errors.New(info)
|
|
}
|
|
}
|
|
|
|
id := api.whisper.Watch(&filter)
|
|
return rpc.NewHexNumber(id), nil
|
|
}
|
|
|
|
// UninstallFilter disables and removes an existing filter.
|
|
func (api *PublicWhisperAPI) UninstallFilter(filterId rpc.HexNumber) {
|
|
api.whisper.Unwatch(filterId.Int())
|
|
}
|
|
|
|
// GetFilterChanges retrieves all the new messages matched by a filter since the last retrieval.
|
|
func (api *PublicWhisperAPI) GetFilterChanges(filterId rpc.HexNumber) []WhisperMessage {
|
|
f := api.whisper.GetFilter(filterId.Int())
|
|
if f != nil {
|
|
newMail := f.Retrieve()
|
|
return toWhisperMessages(newMail)
|
|
}
|
|
return toWhisperMessages(nil)
|
|
}
|
|
|
|
// GetMessages retrieves all the known messages that match a specific filter.
|
|
func (api *PublicWhisperAPI) GetMessages(filterId rpc.HexNumber) []WhisperMessage {
|
|
all := api.whisper.Messages(filterId.Int())
|
|
return toWhisperMessages(all)
|
|
}
|
|
|
|
// toWhisperMessages converts a Whisper message to a RPC whisper message.
|
|
func toWhisperMessages(messages []*whisperv5.ReceivedMessage) []WhisperMessage {
|
|
msgs := make([]WhisperMessage, len(messages))
|
|
for i, msg := range messages {
|
|
msgs[i] = NewWhisperMessage(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
|
|
}
|
|
|
|
params := whisperv5.MessageParams{
|
|
TTL: args.TTL,
|
|
Dst: crypto.ToECDSAPub(args.To),
|
|
KeySym: api.whisper.GetSymKey(args.KeyName),
|
|
Topic: args.Topic,
|
|
Payload: args.Payload,
|
|
Padding: args.Padding,
|
|
WorkTime: args.WorkTime,
|
|
PoW: args.PoW,
|
|
}
|
|
|
|
if len(args.From) > 0 {
|
|
pub := crypto.ToECDSAPub(args.From)
|
|
if !whisperv5.ValidatePublicKey(pub) {
|
|
info := "Post: Invalid 'From' address"
|
|
glog.V(logger.Error).Infof(info)
|
|
return errors.New(info)
|
|
}
|
|
params.Src = api.whisper.GetIdentity(string(args.From))
|
|
if params.Src == nil {
|
|
info := "Post: non-existent identity provided"
|
|
glog.V(logger.Error).Infof(info)
|
|
return errors.New(info)
|
|
}
|
|
}
|
|
|
|
filter := api.whisper.GetFilter(args.FilterID)
|
|
if filter == nil && args.FilterID > -1 {
|
|
info := fmt.Sprintf("Post: wrong filter id %d", args.FilterID)
|
|
glog.V(logger.Error).Infof(info)
|
|
return errors.New(info)
|
|
}
|
|
|
|
if filter != nil {
|
|
// get the missing fields from the filter
|
|
if params.KeySym == nil && filter.KeySym != nil {
|
|
params.KeySym = filter.KeySym
|
|
}
|
|
if params.Src == nil && filter.Src != nil {
|
|
params.Src = filter.KeyAsym
|
|
}
|
|
if (params.Topic == whisperv5.TopicType{}) {
|
|
sz := len(filter.Topics)
|
|
if sz < 1 {
|
|
info := fmt.Sprintf("Post: no topics in filter # %d", args.FilterID)
|
|
glog.V(logger.Error).Infof(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]
|
|
}
|
|
}
|
|
}
|
|
|
|
// validate
|
|
if len(args.KeyName) != 0 && len(params.KeySym) == 0 {
|
|
info := "Post: key was not found by name: " + args.KeyName
|
|
glog.V(logger.Error).Infof(info)
|
|
return errors.New(info)
|
|
}
|
|
|
|
if len(args.To) == 0 && len(args.KeyName) == 0 {
|
|
info := "Post: message must be encrypted either symmetrically or asymmetrically"
|
|
glog.V(logger.Error).Infof(info)
|
|
return errors.New(info)
|
|
}
|
|
|
|
if len(args.To) != 0 && len(args.KeyName) != 0 {
|
|
info := "Post: ambigous encryption method requested"
|
|
glog.V(logger.Error).Infof(info)
|
|
return errors.New(info)
|
|
}
|
|
|
|
if len(args.To) > 0 {
|
|
if !whisperv5.ValidatePublicKey(params.Dst) {
|
|
info := "Post: Invalid 'To' address"
|
|
glog.V(logger.Error).Infof(info)
|
|
return errors.New(info)
|
|
}
|
|
}
|
|
|
|
// encrypt and send
|
|
message := whisperv5.NewSentMessage(¶ms)
|
|
envelope, err := message.Wrap(¶ms)
|
|
if err != nil {
|
|
glog.V(logger.Error).Infof(err.Error())
|
|
return err
|
|
}
|
|
if len(envelope.Data) > whisperv5.MaxMessageLength {
|
|
info := "Post: message is too big"
|
|
glog.V(logger.Error).Infof(info)
|
|
return errors.New(info)
|
|
}
|
|
if (envelope.Topic == whisperv5.TopicType{} && envelope.IsSymmetric()) {
|
|
info := "Post: topic is missing for symmetric encryption"
|
|
glog.V(logger.Error).Infof(info)
|
|
return errors.New(info)
|
|
}
|
|
|
|
if args.PeerID != nil {
|
|
return api.whisper.SendP2PMessage(args.PeerID, envelope)
|
|
}
|
|
|
|
return api.whisper.Send(envelope)
|
|
}
|
|
|
|
type PostArgs struct {
|
|
TTL uint32 `json:"ttl"`
|
|
From rpc.HexBytes `json:"from"`
|
|
To rpc.HexBytes `json:"to"`
|
|
KeyName string `json:"keyname"`
|
|
Topic whisperv5.TopicType `json:"topic"`
|
|
Padding rpc.HexBytes `json:"padding"`
|
|
Payload rpc.HexBytes `json:"payload"`
|
|
WorkTime uint32 `json:"worktime"`
|
|
PoW float64 `json:"pow"`
|
|
FilterID int `json:"filter"`
|
|
PeerID rpc.HexBytes `json:"directP2P"`
|
|
}
|
|
|
|
func (args *PostArgs) UnmarshalJSON(data []byte) (err error) {
|
|
var obj struct {
|
|
TTL uint32 `json:"ttl"`
|
|
From rpc.HexBytes `json:"from"`
|
|
To rpc.HexBytes `json:"to"`
|
|
KeyName string `json:"keyname"`
|
|
Topic whisperv5.TopicType `json:"topic"`
|
|
Payload rpc.HexBytes `json:"payload"`
|
|
Padding rpc.HexBytes `json:"padding"`
|
|
WorkTime uint32 `json:"worktime"`
|
|
PoW float64 `json:"pow"`
|
|
FilterID rpc.HexBytes `json:"filter"`
|
|
PeerID rpc.HexBytes `json:"directP2P"`
|
|
}
|
|
|
|
if err := json.Unmarshal(data, &obj); err != nil {
|
|
return err
|
|
}
|
|
|
|
args.TTL = obj.TTL
|
|
args.From = obj.From
|
|
args.To = obj.To
|
|
args.KeyName = obj.KeyName
|
|
args.Topic = obj.Topic
|
|
args.Payload = obj.Payload
|
|
args.Padding = obj.Padding
|
|
args.WorkTime = obj.WorkTime
|
|
args.PoW = obj.PoW
|
|
args.FilterID = -1
|
|
args.PeerID = obj.PeerID
|
|
|
|
if obj.FilterID != nil {
|
|
x := whisperv5.BytesToIntBigEndian(obj.FilterID)
|
|
args.FilterID = int(x)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
type WhisperFilterArgs struct {
|
|
To []byte
|
|
From []byte
|
|
KeyName string
|
|
PoW float64
|
|
Topics []whisperv5.TopicType
|
|
AcceptP2P bool
|
|
}
|
|
|
|
// 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 {
|
|
To rpc.HexBytes `json:"to"`
|
|
From rpc.HexBytes `json:"from"`
|
|
KeyName string `json:"keyname"`
|
|
PoW float64 `json:"pow"`
|
|
Topics []interface{} `json:"topics"`
|
|
AcceptP2P bool `json:"acceptP2P"`
|
|
}
|
|
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
|
|
|
|
// 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([]whisperv5.TopicType, len(topics))
|
|
for j, s := range topics {
|
|
x := common.FromHex(s)
|
|
if x == nil || len(x) != whisperv5.TopicLength {
|
|
return fmt.Errorf("topic[%d] is invalid", j)
|
|
}
|
|
topicsDecoded[j] = whisperv5.BytesToTopic(x)
|
|
}
|
|
args.Topics = topicsDecoded
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// WhisperMessage is the RPC representation of a whisper message.
|
|
type WhisperMessage struct {
|
|
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"`
|
|
}
|
|
|
|
// NewWhisperMessage converts an internal message into an API version.
|
|
func NewWhisperMessage(message *whisperv5.ReceivedMessage) WhisperMessage {
|
|
return WhisperMessage{
|
|
Payload: common.ToHex(message.Payload),
|
|
Padding: common.ToHex(message.Padding),
|
|
From: common.ToHex(crypto.FromECDSAPub(message.SigToPubKey())),
|
|
To: common.ToHex(crypto.FromECDSAPub(message.Dst)),
|
|
Sent: message.Sent,
|
|
TTL: message.TTL,
|
|
PoW: message.PoW,
|
|
Hash: common.ToHex(message.EnvelopeHash.Bytes()),
|
|
}
|
|
}
|