whisper: project restructured, version 5 introduced (#3022)
whisper: project restructured, version 5 introduced This commits adds a draft version of the new shh v5 protocol. The new version is not on by default, --shh still selects version 2.
This commit is contained in:
gluk256
Felix Lange
504
whisper/shhapi/api.go
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504
whisper/shhapi/api.go
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@@ -0,0 +1,504 @@
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// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package shhapi
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import (
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"encoding/json"
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"errors"
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"fmt"
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mathrand "math/rand"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/logger/glog"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/ethereum/go-ethereum/whisper/whisperv5"
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)
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var whisperOffLineErr = errors.New("whisper is offline")
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// PublicWhisperAPI provides the whisper RPC service.
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type PublicWhisperAPI struct {
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whisper *whisperv5.Whisper
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}
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// NewPublicWhisperAPI create a new RPC whisper service.
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func NewPublicWhisperAPI() *PublicWhisperAPI {
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w := whisperv5.NewWhisper(nil)
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return &PublicWhisperAPI{whisper: w}
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}
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// APIs returns the RPC descriptors the Whisper implementation offers
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func APIs() []rpc.API {
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return []rpc.API{
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{
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Namespace: whisperv5.ProtocolName,
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Version: whisperv5.ProtocolVersionStr,
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Service: NewPublicWhisperAPI(),
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Public: true,
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},
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}
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}
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// Version returns the Whisper version this node offers.
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func (api *PublicWhisperAPI) Version() (*rpc.HexNumber, error) {
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if api.whisper == nil {
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return rpc.NewHexNumber(0), whisperOffLineErr
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}
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return rpc.NewHexNumber(api.whisper.Version()), nil
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}
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// MarkPeerTrusted marks specific peer trusted, which will allow it
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// to send historic (expired) messages.
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func (api *PublicWhisperAPI) MarkPeerTrusted(peerID rpc.HexBytes) error {
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if api.whisper == nil {
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return whisperOffLineErr
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}
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return api.whisper.MarkPeerTrusted(peerID)
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}
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// RequestHistoricMessages requests the peer to deliver the old (expired) messages.
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// data contains parameters (time frame, payment details, etc.), required
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// by the remote email-like server. Whisper is not aware about the data format,
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// it will just forward the raw data to the server.
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func (api *PublicWhisperAPI) RequestHistoricMessages(peerID rpc.HexBytes, data rpc.HexBytes) error {
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if api.whisper == nil {
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return whisperOffLineErr
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}
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return api.whisper.RequestHistoricMessages(peerID, data)
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}
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// HasIdentity checks if the whisper node is configured with the private key
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// of the specified public pair.
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func (api *PublicWhisperAPI) HasIdentity(identity string) (bool, error) {
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if api.whisper == nil {
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return false, whisperOffLineErr
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}
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return api.whisper.HasIdentity(identity), nil
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}
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// DeleteIdentity deletes the specifies key if it exists.
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func (api *PublicWhisperAPI) DeleteIdentity(identity string) error {
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if api.whisper == nil {
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return whisperOffLineErr
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}
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api.whisper.DeleteIdentity(identity)
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return nil
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}
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// NewIdentity generates a new cryptographic identity for the client, and injects
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// it into the known identities for message decryption.
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func (api *PublicWhisperAPI) NewIdentity() (string, error) {
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if api.whisper == nil {
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return "", whisperOffLineErr
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}
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identity := api.whisper.NewIdentity()
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return common.ToHex(crypto.FromECDSAPub(&identity.PublicKey)), nil
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}
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// GenerateSymKey generates a random symmetric key and stores it under
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// the 'name' id. Will be used in the future for session key exchange.
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func (api *PublicWhisperAPI) GenerateSymKey(name string) error {
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if api.whisper == nil {
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return whisperOffLineErr
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}
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return api.whisper.GenerateSymKey(name)
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}
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// AddSymKey stores the key under the 'name' id.
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func (api *PublicWhisperAPI) AddSymKey(name string, key []byte) error {
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if api.whisper == nil {
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return whisperOffLineErr
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}
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return api.whisper.AddSymKey(name, key)
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}
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// HasSymKey returns true if there is a key associated with the name string.
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// Otherwise returns false.
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func (api *PublicWhisperAPI) HasSymKey(name string) (bool, error) {
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if api.whisper == nil {
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return false, whisperOffLineErr
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}
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res := api.whisper.HasSymKey(name)
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return res, nil
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}
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// DeleteSymKey deletes the key associated with the name string if it exists.
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func (api *PublicWhisperAPI) DeleteSymKey(name string) error {
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if api.whisper == nil {
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return whisperOffLineErr
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}
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api.whisper.DeleteSymKey(name)
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return nil
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}
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// NewWhisperFilter creates and registers a new message filter to watch for inbound whisper messages.
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// Returns the ID of the newly created Filter.
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func (api *PublicWhisperAPI) NewFilter(args WhisperFilterArgs) (*rpc.HexNumber, error) {
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if api.whisper == nil {
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return nil, whisperOffLineErr
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}
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filter := whisperv5.Filter{
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Src: crypto.ToECDSAPub(args.From),
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KeySym: api.whisper.GetSymKey(args.KeyName),
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PoW: args.PoW,
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Messages: make(map[common.Hash]*whisperv5.ReceivedMessage),
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AcceptP2P: args.AcceptP2P,
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}
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if len(filter.KeySym) > 0 {
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filter.SymKeyHash = crypto.Keccak256Hash(filter.KeySym)
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}
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for _, t := range args.Topics {
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filter.Topics = append(filter.Topics, t)
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}
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if len(args.Topics) == 0 {
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info := "NewFilter: at least one topic must be specified"
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glog.V(logger.Error).Infof(info)
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return nil, errors.New(info)
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}
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if len(args.KeyName) != 0 && len(filter.KeySym) == 0 {
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info := "NewFilter: key was not found by name: " + args.KeyName
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glog.V(logger.Error).Infof(info)
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return nil, errors.New(info)
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}
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if len(args.To) == 0 && len(filter.KeySym) == 0 {
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info := "NewFilter: filter must contain either symmetric or asymmetric key"
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glog.V(logger.Error).Infof(info)
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return nil, errors.New(info)
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}
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if len(args.To) != 0 && len(filter.KeySym) != 0 {
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info := "NewFilter: filter must not contain both symmetric and asymmetric key"
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glog.V(logger.Error).Infof(info)
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return nil, errors.New(info)
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}
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if len(args.To) > 0 {
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dst := crypto.ToECDSAPub(args.To)
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if !whisperv5.ValidatePublicKey(dst) {
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info := "NewFilter: Invalid 'To' address"
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glog.V(logger.Error).Infof(info)
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return nil, errors.New(info)
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}
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filter.KeyAsym = api.whisper.GetIdentity(string(args.To))
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if filter.KeyAsym == nil {
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info := "NewFilter: non-existent identity provided"
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glog.V(logger.Error).Infof(info)
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return nil, errors.New(info)
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}
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}
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if len(args.From) > 0 {
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if !whisperv5.ValidatePublicKey(filter.Src) {
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info := "NewFilter: Invalid 'From' address"
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glog.V(logger.Error).Infof(info)
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return nil, errors.New(info)
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}
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}
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id := api.whisper.Watch(&filter)
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return rpc.NewHexNumber(id), nil
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}
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// UninstallFilter disables and removes an existing filter.
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func (api *PublicWhisperAPI) UninstallFilter(filterId rpc.HexNumber) {
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api.whisper.Unwatch(filterId.Int())
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}
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// GetFilterChanges retrieves all the new messages matched by a filter since the last retrieval.
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func (api *PublicWhisperAPI) GetFilterChanges(filterId rpc.HexNumber) []WhisperMessage {
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f := api.whisper.GetFilter(filterId.Int())
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if f != nil {
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newMail := f.Retrieve()
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return toWhisperMessages(newMail)
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}
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return toWhisperMessages(nil)
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}
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// GetMessages retrieves all the known messages that match a specific filter.
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func (api *PublicWhisperAPI) GetMessages(filterId rpc.HexNumber) []WhisperMessage {
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all := api.whisper.Messages(filterId.Int())
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return toWhisperMessages(all)
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}
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// toWhisperMessages converts a Whisper message to a RPC whisper message.
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func toWhisperMessages(messages []*whisperv5.ReceivedMessage) []WhisperMessage {
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msgs := make([]WhisperMessage, len(messages))
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for i, msg := range messages {
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msgs[i] = NewWhisperMessage(msg)
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}
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return msgs
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}
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// Post creates a whisper message and injects it into the network for distribution.
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func (api *PublicWhisperAPI) Post(args PostArgs) error {
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if api.whisper == nil {
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return whisperOffLineErr
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}
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params := whisperv5.MessageParams{
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TTL: args.TTL,
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Dst: crypto.ToECDSAPub(args.To),
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KeySym: api.whisper.GetSymKey(args.KeyName),
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Topic: args.Topic,
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Payload: args.Payload,
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Padding: args.Padding,
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WorkTime: args.WorkTime,
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PoW: args.PoW,
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}
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if len(args.From) > 0 {
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pub := crypto.ToECDSAPub(args.From)
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if !whisperv5.ValidatePublicKey(pub) {
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info := "Post: Invalid 'From' address"
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glog.V(logger.Error).Infof(info)
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return errors.New(info)
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}
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params.Src = api.whisper.GetIdentity(string(args.From))
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if params.Src == nil {
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info := "Post: non-existent identity provided"
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glog.V(logger.Error).Infof(info)
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return errors.New(info)
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}
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}
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filter := api.whisper.GetFilter(args.FilterID)
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if filter == nil && args.FilterID > -1 {
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info := fmt.Sprintf("Post: wrong filter id %d", args.FilterID)
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glog.V(logger.Error).Infof(info)
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return errors.New(info)
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}
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if filter != nil {
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// get the missing fields from the filter
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if params.KeySym == nil && filter.KeySym != nil {
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params.KeySym = filter.KeySym
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}
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if params.Src == nil && filter.Src != nil {
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params.Src = filter.KeyAsym
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}
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if (params.Topic == whisperv5.TopicType{}) {
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sz := len(filter.Topics)
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if sz < 1 {
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info := fmt.Sprintf("Post: no topics in filter # %d", args.FilterID)
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glog.V(logger.Error).Infof(info)
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return errors.New(info)
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} else if sz == 1 {
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params.Topic = filter.Topics[0]
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} else {
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// choose randomly
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rnd := mathrand.Intn(sz)
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params.Topic = filter.Topics[rnd]
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}
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}
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}
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// validate
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if len(args.KeyName) != 0 && len(params.KeySym) == 0 {
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info := "Post: key was not found by name: " + args.KeyName
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glog.V(logger.Error).Infof(info)
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return errors.New(info)
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}
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if len(args.To) == 0 && len(args.KeyName) == 0 {
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info := "Post: message must be encrypted either symmetrically or asymmetrically"
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glog.V(logger.Error).Infof(info)
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return errors.New(info)
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}
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if len(args.To) != 0 && len(args.KeyName) != 0 {
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info := "Post: ambigous encryption method requested"
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glog.V(logger.Error).Infof(info)
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return errors.New(info)
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}
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if len(args.To) > 0 {
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if !whisperv5.ValidatePublicKey(params.Dst) {
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info := "Post: Invalid 'To' address"
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glog.V(logger.Error).Infof(info)
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return errors.New(info)
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}
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}
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// encrypt and send
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message := whisperv5.NewSentMessage(¶ms)
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envelope, err := message.Wrap(¶ms)
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if err != nil {
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glog.V(logger.Error).Infof(err.Error())
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return err
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}
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if len(envelope.Data) > whisperv5.MaxMessageLength {
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info := "Post: message is too big"
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glog.V(logger.Error).Infof(info)
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return errors.New(info)
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}
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if (envelope.Topic == whisperv5.TopicType{} && envelope.IsSymmetric()) {
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info := "Post: topic is missing for symmetric encryption"
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glog.V(logger.Error).Infof(info)
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return errors.New(info)
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}
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if args.PeerID != nil {
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return api.whisper.SendP2PMessage(args.PeerID, envelope)
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}
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return api.whisper.Send(envelope)
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}
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type PostArgs struct {
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TTL uint32 `json:"ttl"`
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From rpc.HexBytes `json:"from"`
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To rpc.HexBytes `json:"to"`
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KeyName string `json:"keyname"`
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Topic whisperv5.TopicType `json:"topic"`
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Padding rpc.HexBytes `json:"padding"`
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Payload rpc.HexBytes `json:"payload"`
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WorkTime uint32 `json:"worktime"`
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PoW float64 `json:"pow"`
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FilterID int `json:"filter"`
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PeerID rpc.HexBytes `json:"directP2P"`
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}
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func (args *PostArgs) UnmarshalJSON(data []byte) (err error) {
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var obj struct {
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TTL uint32 `json:"ttl"`
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From rpc.HexBytes `json:"from"`
|
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To rpc.HexBytes `json:"to"`
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KeyName string `json:"keyname"`
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Topic whisperv5.TopicType `json:"topic"`
|
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Payload rpc.HexBytes `json:"payload"`
|
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Padding rpc.HexBytes `json:"padding"`
|
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WorkTime uint32 `json:"worktime"`
|
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PoW float64 `json:"pow"`
|
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FilterID rpc.HexBytes `json:"filter"`
|
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PeerID rpc.HexBytes `json:"directP2P"`
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}
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if err := json.Unmarshal(data, &obj); err != nil {
|
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return err
|
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}
|
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|
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args.TTL = obj.TTL
|
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args.From = obj.From
|
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args.To = obj.To
|
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args.KeyName = obj.KeyName
|
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args.Topic = obj.Topic
|
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args.Payload = obj.Payload
|
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args.Padding = obj.Padding
|
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args.WorkTime = obj.WorkTime
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args.PoW = obj.PoW
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args.FilterID = -1
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args.PeerID = obj.PeerID
|
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|
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if obj.FilterID != nil {
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x := whisperv5.BytesToIntBigEndian(obj.FilterID)
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args.FilterID = int(x)
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}
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return nil
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}
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type WhisperFilterArgs struct {
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To []byte
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From []byte
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KeyName string
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PoW float64
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Topics []whisperv5.TopicType
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AcceptP2P bool
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}
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|
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// UnmarshalJSON implements the json.Unmarshaler interface, invoked to convert a
|
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// 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"`
|
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KeyName string `json:"keyname"`
|
||||
PoW float64 `json:"pow"`
|
||||
Topics []interface{} `json:"topics"`
|
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AcceptP2P bool `json:"acceptP2P"`
|
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}
|
||||
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()),
|
||||
}
|
||||
}
|
||||
170
whisper/shhapi/api_test.go
Normal file
170
whisper/shhapi/api_test.go
Normal file
@@ -0,0 +1,170 @@
|
||||
// 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 (
|
||||
"testing"
|
||||
|
||||
"github.com/ethereum/go-ethereum/rpc"
|
||||
"github.com/ethereum/go-ethereum/whisper/whisperv5"
|
||||
)
|
||||
|
||||
func TestBasic(x *testing.T) {
|
||||
var id string = "test"
|
||||
api := NewPublicWhisperAPI()
|
||||
if api == nil {
|
||||
x.Errorf("failed to create API.")
|
||||
return
|
||||
}
|
||||
|
||||
ver, err := api.Version()
|
||||
if err != nil {
|
||||
x.Errorf("failed generateFilter: %s.", err)
|
||||
return
|
||||
}
|
||||
|
||||
if ver.Uint64() != whisperv5.ProtocolVersion {
|
||||
x.Errorf("wrong version: %d.", ver.Uint64())
|
||||
return
|
||||
}
|
||||
|
||||
var hexnum rpc.HexNumber
|
||||
mail := api.GetFilterChanges(hexnum)
|
||||
if len(mail) != 0 {
|
||||
x.Errorf("failed GetFilterChanges")
|
||||
return
|
||||
}
|
||||
|
||||
exist, err := api.HasIdentity(id)
|
||||
if err != nil {
|
||||
x.Errorf("failed 1 HasIdentity: %s.", err)
|
||||
return
|
||||
}
|
||||
if exist {
|
||||
x.Errorf("failed 2 HasIdentity: false positive.")
|
||||
return
|
||||
}
|
||||
|
||||
err = api.DeleteIdentity(id)
|
||||
if err != nil {
|
||||
x.Errorf("failed 3 DeleteIdentity: %s.", err)
|
||||
return
|
||||
}
|
||||
|
||||
pub, err := api.NewIdentity()
|
||||
if err != nil {
|
||||
x.Errorf("failed 4 NewIdentity: %s.", err)
|
||||
return
|
||||
}
|
||||
if len(pub) == 0 {
|
||||
x.Errorf("NewIdentity 5: empty")
|
||||
return
|
||||
}
|
||||
|
||||
exist, err = api.HasIdentity(pub)
|
||||
if err != nil {
|
||||
x.Errorf("failed 6 HasIdentity: %s.", err)
|
||||
return
|
||||
}
|
||||
if !exist {
|
||||
x.Errorf("failed 7 HasIdentity: false negative.")
|
||||
return
|
||||
}
|
||||
|
||||
err = api.DeleteIdentity(pub)
|
||||
if err != nil {
|
||||
x.Errorf("failed 8 DeleteIdentity: %s.", err)
|
||||
return
|
||||
}
|
||||
|
||||
exist, err = api.HasIdentity(pub)
|
||||
if err != nil {
|
||||
x.Errorf("failed 9 HasIdentity: %s.", err)
|
||||
return
|
||||
}
|
||||
if exist {
|
||||
x.Errorf("failed 10 HasIdentity: false positive.")
|
||||
return
|
||||
}
|
||||
|
||||
id = "arbitrary text"
|
||||
id2 := "another arbitrary string"
|
||||
|
||||
exist, err = api.HasSymKey(id)
|
||||
if err != nil {
|
||||
x.Errorf("failed 11 HasSymKey: %s.", err)
|
||||
return
|
||||
}
|
||||
if exist {
|
||||
x.Errorf("failed 12 HasSymKey: false positive.")
|
||||
return
|
||||
}
|
||||
|
||||
err = api.GenerateSymKey(id)
|
||||
if err != nil {
|
||||
x.Errorf("failed 13 GenerateSymKey: %s.", err)
|
||||
return
|
||||
}
|
||||
|
||||
exist, err = api.HasSymKey(id)
|
||||
if err != nil {
|
||||
x.Errorf("failed 14 HasSymKey: %s.", err)
|
||||
return
|
||||
}
|
||||
if !exist {
|
||||
x.Errorf("failed 15 HasSymKey: false negative.")
|
||||
return
|
||||
}
|
||||
|
||||
err = api.AddSymKey(id, []byte("some stuff here"))
|
||||
if err == nil {
|
||||
x.Errorf("failed 16 AddSymKey: %s.", err)
|
||||
return
|
||||
}
|
||||
|
||||
err = api.AddSymKey(id2, []byte("some stuff here"))
|
||||
if err != nil {
|
||||
x.Errorf("failed 17 AddSymKey: %s.", err)
|
||||
return
|
||||
}
|
||||
|
||||
exist, err = api.HasSymKey(id2)
|
||||
if err != nil {
|
||||
x.Errorf("failed 18 HasSymKey: %s.", err)
|
||||
return
|
||||
}
|
||||
if !exist {
|
||||
x.Errorf("failed 19 HasSymKey: false negative.")
|
||||
return
|
||||
}
|
||||
|
||||
err = api.DeleteSymKey(id)
|
||||
if err != nil {
|
||||
x.Errorf("failed 20 DeleteSymKey: %s.", err)
|
||||
return
|
||||
}
|
||||
|
||||
exist, err = api.HasSymKey(id)
|
||||
if err != nil {
|
||||
x.Errorf("failed 21 HasSymKey: %s.", err)
|
||||
return
|
||||
}
|
||||
if exist {
|
||||
x.Errorf("failed 22 HasSymKey: false positive.")
|
||||
return
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user