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-rw-r--r--cmd/utils/jeth.go323
1 files changed, 323 insertions, 0 deletions
diff --git a/cmd/utils/jeth.go b/cmd/utils/jeth.go
new file mode 100644
index 000000000..b460597c1
--- /dev/null
+++ b/cmd/utils/jeth.go
@@ -0,0 +1,323 @@
+// Copyright 2015 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 utils
+
+import (
+ "encoding/json"
+ "fmt"
+ "time"
+
+ "github.com/ethereum/go-ethereum/jsre"
+ "github.com/ethereum/go-ethereum/rpc"
+
+ "github.com/robertkrimen/otto"
+)
+
+type Jeth struct {
+ re *jsre.JSRE
+ client rpc.Client
+}
+
+// NewJeth create a new backend for the JSRE console
+func NewJeth(re *jsre.JSRE, client rpc.Client) *Jeth {
+ return &Jeth{re, client}
+}
+
+func (self *Jeth) err(call otto.FunctionCall, code int, msg string, id *int64) (response otto.Value) {
+ m := rpc.JSONErrResponse{
+ Version: "2.0",
+ Id: id,
+ Error: rpc.JSONError{
+ Code: code,
+ Message: msg,
+ },
+ }
+
+ errObj, _ := json.Marshal(m.Error)
+ errRes, _ := json.Marshal(m)
+
+ call.Otto.Run("ret_error = " + string(errObj))
+ res, _ := call.Otto.Run("ret_response = " + string(errRes))
+
+ return res
+}
+
+// UnlockAccount asks the user for the password and than executes the jeth.UnlockAccount callback in the jsre
+func (self *Jeth) UnlockAccount(call otto.FunctionCall) (response otto.Value) {
+ var cmd, account, passwd string
+ timeout := int64(300)
+ var ok bool
+
+ if len(call.ArgumentList) == 0 {
+ fmt.Println("expected address of account to unlock")
+ return otto.FalseValue()
+ }
+
+ if len(call.ArgumentList) >= 1 {
+ if accountExport, err := call.Argument(0).Export(); err == nil {
+ if account, ok = accountExport.(string); ok {
+ if len(call.ArgumentList) == 1 {
+ fmt.Printf("Unlock account %s\n", account)
+ passwd, err = PromptPassword("Passphrase: ", true)
+ if err != nil {
+ return otto.FalseValue()
+ }
+ }
+ }
+ }
+ }
+ if len(call.ArgumentList) >= 2 {
+ if passwdExport, err := call.Argument(1).Export(); err == nil {
+ passwd, _ = passwdExport.(string)
+ }
+ }
+
+ if len(call.ArgumentList) >= 3 {
+ if timeoutExport, err := call.Argument(2).Export(); err == nil {
+ timeout, _ = timeoutExport.(int64)
+ }
+ }
+
+ cmd = fmt.Sprintf("jeth.unlockAccount('%s', '%s', %d)", account, passwd, timeout)
+ if val, err := call.Otto.Run(cmd); err == nil {
+ return val
+ }
+
+ return otto.FalseValue()
+}
+
+// NewAccount asks the user for the password and than executes the jeth.newAccount callback in the jsre
+func (self *Jeth) NewAccount(call otto.FunctionCall) (response otto.Value) {
+ if len(call.ArgumentList) == 0 {
+ passwd, err := PromptPassword("Passphrase: ", true)
+ if err != nil {
+ return otto.FalseValue()
+ }
+ passwd2, err := PromptPassword("Repeat passphrase: ", true)
+ if err != nil {
+ return otto.FalseValue()
+ }
+
+ if passwd != passwd2 {
+ fmt.Println("Passphrases don't match")
+ return otto.FalseValue()
+ }
+
+ cmd := fmt.Sprintf("jeth.newAccount('%s')", passwd)
+ if val, err := call.Otto.Run(cmd); err == nil {
+ return val
+ }
+ } else {
+ fmt.Println("New account doesn't expect argument(s), you will be prompted for a password")
+ }
+
+ return otto.FalseValue()
+}
+
+func (self *Jeth) Send(call otto.FunctionCall) (response otto.Value) {
+ reqif, err := call.Argument(0).Export()
+ if err != nil {
+ return self.err(call, -32700, err.Error(), nil)
+ }
+
+ jsonreq, err := json.Marshal(reqif)
+ var reqs []rpc.JSONRequest
+ batch := true
+ err = json.Unmarshal(jsonreq, &reqs)
+ if err != nil {
+ reqs = make([]rpc.JSONRequest, 1)
+ err = json.Unmarshal(jsonreq, &reqs[0])
+ batch = false
+ }
+
+ call.Otto.Set("response_len", len(reqs))
+ call.Otto.Run("var ret_response = new Array(response_len);")
+
+ for i, req := range reqs {
+ err := self.client.Send(&req)
+ if err != nil {
+ return self.err(call, -32603, err.Error(), req.Id)
+ }
+
+ result := make(map[string]interface{})
+ err = self.client.Recv(&result)
+ if err != nil {
+ return self.err(call, -32603, err.Error(), req.Id)
+ }
+
+ _, isSuccessResponse := result["result"]
+ _, isErrorResponse := result["error"]
+ if !isSuccessResponse && !isErrorResponse {
+ return self.err(call, -32603, fmt.Sprintf("Invalid response"), new(int64))
+ }
+
+ id, _ := result["id"]
+ call.Otto.Set("ret_id", id)
+
+ jsonver, _ := result["jsonrpc"]
+ call.Otto.Set("ret_jsonrpc", jsonver)
+
+ var payload []byte
+ if isSuccessResponse {
+ payload, _ = json.Marshal(result["result"])
+ } else if isErrorResponse {
+ payload, _ = json.Marshal(result["error"])
+ }
+ call.Otto.Set("ret_result", string(payload))
+ call.Otto.Set("response_idx", i)
+
+ response, err = call.Otto.Run(`
+ ret_response[response_idx] = { jsonrpc: ret_jsonrpc, id: ret_id, result: JSON.parse(ret_result) };
+ `)
+ }
+
+ if !batch {
+ call.Otto.Run("ret_response = ret_response[0];")
+ }
+
+ if call.Argument(1).IsObject() {
+ call.Otto.Set("callback", call.Argument(1))
+ call.Otto.Run(`
+ if (Object.prototype.toString.call(callback) == '[object Function]') {
+ callback(null, ret_response);
+ }
+ `)
+ }
+
+ return
+}
+
+/*
+// handleRequest will handle user agent requests by interacting with the user and sending
+// the user response back to the geth service
+func (self *Jeth) handleRequest(req *shared.Request) bool {
+ var err error
+ var args []interface{}
+ if err = json.Unmarshal(req.Params, &args); err != nil {
+ glog.V(logger.Info).Infof("Unable to parse agent request - %v\n", err)
+ return false
+ }
+
+ switch req.Method {
+ case useragent.AskPasswordMethod:
+ return self.askPassword(req.Id, req.Jsonrpc, args)
+ case useragent.ConfirmTransactionMethod:
+ return self.confirmTransaction(req.Id, req.Jsonrpc, args)
+ }
+
+ return false
+}
+
+// askPassword will ask the user to supply the password for a given account
+func (self *Jeth) askPassword(id interface{}, jsonrpc string, args []interface{}) bool {
+ var err error
+ var passwd string
+ if len(args) >= 1 {
+ if account, ok := args[0].(string); ok {
+ fmt.Printf("Unlock account %s\n", account)
+ } else {
+ return false
+ }
+ }
+ passwd, err = PromptPassword("Passphrase: ", true)
+
+ if err = self.client.Send(shared.NewRpcResponse(id, jsonrpc, passwd, err)); err != nil {
+ glog.V(logger.Info).Infof("Unable to send user agent ask password response - %v\n", err)
+ }
+
+ return err == nil
+}
+
+func (self *Jeth) confirmTransaction(id interface{}, jsonrpc string, args []interface{}) bool {
+ // Accept all tx which are send from this console
+ return self.client.Send(shared.NewRpcResponse(id, jsonrpc, true, nil)) == nil
+}
+*/
+
+// throwJSExeception panics on an otto value, the Otto VM will then throw msg as a javascript error.
+func throwJSExeception(msg interface{}) otto.Value {
+ p, _ := otto.ToValue(msg)
+ panic(p)
+ return p
+}
+
+// Sleep will halt the console for arg[0] seconds.
+func (self *Jeth) Sleep(call otto.FunctionCall) (response otto.Value) {
+ if len(call.ArgumentList) >= 1 {
+ if call.Argument(0).IsNumber() {
+ sleep, _ := call.Argument(0).ToInteger()
+ time.Sleep(time.Duration(sleep) * time.Second)
+ return otto.TrueValue()
+ }
+ }
+ return throwJSExeception("usage: sleep(<sleep in seconds>)")
+}
+
+// SleepBlocks will wait for a specified number of new blocks or max for a
+// given of seconds. sleepBlocks(nBlocks[, maxSleep]).
+func (self *Jeth) SleepBlocks(call otto.FunctionCall) (response otto.Value) {
+ nBlocks := int64(0)
+ maxSleep := int64(9999999999999999) // indefinitely
+
+ nArgs := len(call.ArgumentList)
+
+ if nArgs == 0 {
+ throwJSExeception("usage: sleepBlocks(<n blocks>[, max sleep in seconds])")
+ }
+
+ if nArgs >= 1 {
+ if call.Argument(0).IsNumber() {
+ nBlocks, _ = call.Argument(0).ToInteger()
+ } else {
+ throwJSExeception("expected number as first argument")
+ }
+ }
+
+ if nArgs >= 2 {
+ if call.Argument(1).IsNumber() {
+ maxSleep, _ = call.Argument(1).ToInteger()
+ } else {
+ throwJSExeception("expected number as second argument")
+ }
+ }
+
+ // go through the console, this will allow web3 to call the appropriate
+ // callbacks if a delayed response or notification is received.
+ currentBlockNr := func() int64 {
+ result, err := call.Otto.Run("eth.blockNumber")
+ if err != nil {
+ throwJSExeception(err.Error())
+ }
+ blockNr, err := result.ToInteger()
+ if err != nil {
+ throwJSExeception(err.Error())
+ }
+ return blockNr
+ }
+
+ targetBlockNr := currentBlockNr() + nBlocks
+ deadline := time.Now().Add(time.Duration(maxSleep) * time.Second)
+
+ for time.Now().Before(deadline) {
+ if currentBlockNr() >= targetBlockNr {
+ return otto.TrueValue()
+ }
+ time.Sleep(time.Second)
+ }
+
+ return otto.FalseValue()
+}