3f047be5aa
All code outside of cmd/ is licensed as LGPL. The headers now reflect this by calling the whole work "the go-ethereum library".
196 lines
5.0 KiB
Go
196 lines
5.0 KiB
Go
// Copyright 2015 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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// go-ethereum 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 api
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/eth"
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"github.com/ethereum/go-ethereum/rpc/codec"
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"github.com/ethereum/go-ethereum/rpc/shared"
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"github.com/ethereum/go-ethereum/xeth"
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)
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const (
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ShhApiVersion = "1.0"
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)
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var (
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// mapping between methods and handlers
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shhMapping = map[string]shhhandler{
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"shh_version": (*shhApi).Version,
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"shh_post": (*shhApi).Post,
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"shh_hasIdentity": (*shhApi).HasIdentity,
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"shh_newIdentity": (*shhApi).NewIdentity,
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"shh_newFilter": (*shhApi).NewFilter,
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"shh_uninstallFilter": (*shhApi).UninstallFilter,
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"shh_getFilterChanges": (*shhApi).GetFilterChanges,
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}
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)
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func newWhisperOfflineError(method string) error {
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return shared.NewNotAvailableError(method, "whisper offline")
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}
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// net callback handler
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type shhhandler func(*shhApi, *shared.Request) (interface{}, error)
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// shh api provider
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type shhApi struct {
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xeth *xeth.XEth
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ethereum *eth.Ethereum
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methods map[string]shhhandler
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codec codec.ApiCoder
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}
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// create a new whisper api instance
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func NewShhApi(xeth *xeth.XEth, eth *eth.Ethereum, coder codec.Codec) *shhApi {
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return &shhApi{
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xeth: xeth,
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ethereum: eth,
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methods: shhMapping,
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codec: coder.New(nil),
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}
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}
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// collection with supported methods
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func (self *shhApi) Methods() []string {
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methods := make([]string, len(self.methods))
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i := 0
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for k := range self.methods {
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methods[i] = k
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i++
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}
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return methods
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}
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// Execute given request
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func (self *shhApi) Execute(req *shared.Request) (interface{}, error) {
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if callback, ok := self.methods[req.Method]; ok {
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return callback(self, req)
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}
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return nil, shared.NewNotImplementedError(req.Method)
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}
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func (self *shhApi) Name() string {
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return shared.ShhApiName
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}
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func (self *shhApi) ApiVersion() string {
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return ShhApiVersion
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}
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func (self *shhApi) Version(req *shared.Request) (interface{}, error) {
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w := self.xeth.Whisper()
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if w == nil {
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return nil, newWhisperOfflineError(req.Method)
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}
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return w.Version(), nil
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}
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func (self *shhApi) Post(req *shared.Request) (interface{}, error) {
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w := self.xeth.Whisper()
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if w == nil {
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return nil, newWhisperOfflineError(req.Method)
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}
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args := new(WhisperMessageArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, err
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}
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err := w.Post(args.Payload, args.To, args.From, args.Topics, args.Priority, args.Ttl)
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if err != nil {
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return false, err
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}
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return true, nil
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}
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func (self *shhApi) HasIdentity(req *shared.Request) (interface{}, error) {
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w := self.xeth.Whisper()
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if w == nil {
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return nil, newWhisperOfflineError(req.Method)
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}
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args := new(WhisperIdentityArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, err
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}
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return w.HasIdentity(args.Identity), nil
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}
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func (self *shhApi) NewIdentity(req *shared.Request) (interface{}, error) {
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w := self.xeth.Whisper()
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if w == nil {
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return nil, newWhisperOfflineError(req.Method)
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}
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return w.NewIdentity(), nil
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}
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func (self *shhApi) NewFilter(req *shared.Request) (interface{}, error) {
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args := new(WhisperFilterArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, err
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}
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id := self.xeth.NewWhisperFilter(args.To, args.From, args.Topics)
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return newHexNum(big.NewInt(int64(id)).Bytes()), nil
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}
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func (self *shhApi) UninstallFilter(req *shared.Request) (interface{}, error) {
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args := new(FilterIdArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, err
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}
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return self.xeth.UninstallWhisperFilter(args.Id), nil
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}
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func (self *shhApi) GetFilterChanges(req *shared.Request) (interface{}, error) {
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w := self.xeth.Whisper()
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if w == nil {
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return nil, newWhisperOfflineError(req.Method)
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}
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// Retrieve all the new messages arrived since the last request
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args := new(FilterIdArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, err
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}
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return self.xeth.WhisperMessagesChanged(args.Id), nil
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}
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func (self *shhApi) GetMessages(req *shared.Request) (interface{}, error) {
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w := self.xeth.Whisper()
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if w == nil {
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return nil, newWhisperOfflineError(req.Method)
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}
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// Retrieve all the cached messages matching a specific, existing filter
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args := new(FilterIdArgs)
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if err := self.codec.Decode(req.Params, &args); err != nil {
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return nil, err
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}
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return self.xeth.WhisperMessages(args.Id), nil
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}
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