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192 lines
4.7 KiB
192 lines
4.7 KiB
/*
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This file is part of go-ethereum
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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 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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go-ethereum 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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package rpc
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import (
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"encoding/json"
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"fmt"
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"io"
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"math/big"
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"net/http"
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"reflect"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/state"
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"github.com/ethereum/go-ethereum/xeth"
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)
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var rpclogger = logger.NewLogger("RPC")
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type JsonWrapper struct{}
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// Unmarshal state is a helper method which has the ability to decode messsages
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// that use the `defaultBlock` (https://github.com/ethereum/wiki/wiki/JSON-RPC#the-default-block-parameter)
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// For example a `call`: [{to: "0x....", data:"0x..."}, "latest"]. The first argument is the transaction
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// message and the second one refers to the block height (or state) to which to apply this `call`.
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func UnmarshalRawMessages(b []byte, iface interface{}, number *int64) (err error) {
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var data []json.RawMessage
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if err = json.Unmarshal(b, &data); err != nil && len(data) == 0 {
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return NewDecodeParamError(err.Error())
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}
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// Hrm... Occurs when no params
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if len(data) == 0 {
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return NewDecodeParamError("No data")
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}
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// Number index determines the index in the array for a possible block number
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numberIndex := 0
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value := reflect.ValueOf(iface)
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rvalue := reflect.Indirect(value)
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switch rvalue.Kind() {
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case reflect.Slice:
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// This is a bit of a cheat, but `data` is expected to be larger than 2 if iface is a slice
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if number != nil {
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numberIndex = len(data) - 1
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} else {
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numberIndex = len(data)
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}
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slice := reflect.MakeSlice(rvalue.Type(), numberIndex, numberIndex)
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for i, raw := range data[0:numberIndex] {
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v := slice.Index(i).Interface()
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if err = json.Unmarshal(raw, &v); err != nil {
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fmt.Println(err, v)
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return err
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}
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slice.Index(i).Set(reflect.ValueOf(v))
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}
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reflect.Indirect(rvalue).Set(slice) //value.Set(slice)
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case reflect.Struct:
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fallthrough
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default:
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if err = json.Unmarshal(data[0], iface); err != nil {
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return NewDecodeParamError(err.Error())
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}
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numberIndex = 1
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}
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// <0 index means out of bound for block number
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if numberIndex >= 0 && len(data) > numberIndex {
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if err = blockNumber(data[numberIndex], number); err != nil {
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return NewDecodeParamError(err.Error())
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}
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}
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return nil
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}
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func (self JsonWrapper) Send(writer io.Writer, v interface{}) (n int, err error) {
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var payload []byte
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payload, err = json.MarshalIndent(v, "", "\t")
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if err != nil {
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rpclogger.Fatalln("Error marshalling JSON", err)
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return 0, err
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}
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rpclogger.DebugDetailf("Sending payload: %s", payload)
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return writer.Write(payload)
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}
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func (self JsonWrapper) ParseRequestBody(req *http.Request) (RpcRequest, error) {
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var reqParsed RpcRequest
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// Convert JSON to native types
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d := json.NewDecoder(req.Body)
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defer req.Body.Close()
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err := d.Decode(&reqParsed)
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if err != nil {
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rpclogger.Errorln("Error decoding JSON: ", err)
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return reqParsed, err
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}
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rpclogger.DebugDetailf("Parsed request: %s", reqParsed)
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return reqParsed, nil
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}
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func i2hex(n int) string {
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return common.ToHex(big.NewInt(int64(n)).Bytes())
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}
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type RpcServer interface {
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Start()
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Stop()
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}
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type Log struct {
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Address string `json:"address"`
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Topic []string `json:"topic"`
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Data string `json:"data"`
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Number uint64 `json:"number"`
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}
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func toLogs(logs state.Logs) (ls []Log) {
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ls = make([]Log, len(logs))
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for i, log := range logs {
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var l Log
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l.Topic = make([]string, len(log.Topics()))
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l.Address = common.ToHex(log.Address())
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l.Data = common.ToHex(log.Data())
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l.Number = log.Number()
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for j, topic := range log.Topics() {
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l.Topic[j] = common.ToHex(topic)
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}
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ls[i] = l
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}
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return
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}
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type whisperFilter struct {
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messages []xeth.WhisperMessage
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timeout time.Time
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id int
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}
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func (w *whisperFilter) add(msgs ...xeth.WhisperMessage) {
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w.messages = append(w.messages, msgs...)
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}
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func (w *whisperFilter) get() []xeth.WhisperMessage {
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w.timeout = time.Now()
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tmp := w.messages
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w.messages = nil
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return tmp
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}
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type logFilter struct {
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logs state.Logs
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timeout time.Time
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id int
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}
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func (l *logFilter) add(logs ...state.Log) {
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l.logs = append(l.logs, logs...)
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}
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func (l *logFilter) get() state.Logs {
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l.timeout = time.Now()
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tmp := l.logs
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l.logs = nil
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return tmp
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}
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