Merge pull request #18172 from holiman/puppeth_converter

cmd/puppeth: implement chainspec converters

cmd/puppeth/genesis_test.go

+// Copyright 2018 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"reflect"
+	"strings"
+	"testing"
+
+	"github.com/davecgh/go-spew/spew"
+	"github.com/ethereum/go-ethereum/core"
+)
+
+// Tests the go-ethereum to Aleth chainspec conversion for the Stureby testnet.
+func TestAlethSturebyConverter(t *testing.T) {
+	blob, err := ioutil.ReadFile("testdata/stureby_geth.json")
+	if err != nil {
+		t.Fatalf("could not read file: %v", err)
+	}
+	var genesis core.Genesis
+	if err := json.Unmarshal(blob, &genesis); err != nil {
+		t.Fatalf("failed parsing genesis: %v", err)
+	}
+	spec, err := newAlethGenesisSpec("stureby", &genesis)
+	if err != nil {
+		t.Fatalf("failed creating chainspec: %v", err)
+	}
+
+	expBlob, err := ioutil.ReadFile("testdata/stureby_aleth.json")
+	if err != nil {
+		t.Fatalf("could not read file: %v", err)
+	}
+	expspec := &alethGenesisSpec{}
+	if err := json.Unmarshal(expBlob, expspec); err != nil {
+		t.Fatalf("failed parsing genesis: %v", err)
+	}
+	if !reflect.DeepEqual(expspec, spec) {
+		t.Errorf("chainspec mismatch")
+		c := spew.ConfigState{
+			DisablePointerAddresses: true,
+			SortKeys:                true,
+		}
+		exp := strings.Split(c.Sdump(expspec), "\n")
+		got := strings.Split(c.Sdump(spec), "\n")
+		for i := 0; i < len(exp) && i < len(got); i++ {
+			if exp[i] != got[i] {
+				fmt.Printf("got: %v\nexp: %v\n", exp[i], got[i])
+			}
+		}
+	}
+}
+
+// Tests the go-ethereum to Parity chainspec conversion for the Stureby testnet.
+func TestParitySturebyConverter(t *testing.T) {
+	blob, err := ioutil.ReadFile("testdata/stureby_geth.json")
+	if err != nil {
+		t.Fatalf("could not read file: %v", err)
+	}
+	var genesis core.Genesis
+	if err := json.Unmarshal(blob, &genesis); err != nil {
+		t.Fatalf("failed parsing genesis: %v", err)
+	}
+	spec, err := newParityChainSpec("Stureby", &genesis, []string{})
+	if err != nil {
+		t.Fatalf("failed creating chainspec: %v", err)
+	}
+
+	expBlob, err := ioutil.ReadFile("testdata/stureby_parity.json")
+	if err != nil {
+		t.Fatalf("could not read file: %v", err)
+	}
+	expspec := &parityChainSpec{}
+	if err := json.Unmarshal(expBlob, expspec); err != nil {
+		t.Fatalf("failed parsing genesis: %v", err)
+	}
+	expspec.Nodes = []string{}
+
+	if !reflect.DeepEqual(expspec, spec) {
+		t.Errorf("chainspec mismatch")
+		c := spew.ConfigState{
+			DisablePointerAddresses: true,
+			SortKeys:                true,
+		}
+		exp := strings.Split(c.Sdump(expspec), "\n")
+		got := strings.Split(c.Sdump(spec), "\n")
+		for i := 0; i < len(exp) && i < len(got); i++ {
+			if exp[i] != got[i] {
+				fmt.Printf("got: %v\nexp: %v\n", exp[i], got[i])
+			}
+		}
+	}
+}

cmd/puppeth/module_dashboard.go

@@ -640,7 +640,7 @@ func deployDashboard(client *sshClient, network string, conf *config, config *da
 	files[filepath.Join(workdir, network+".json")] = genesis
 
 	if conf.Genesis.Config.Ethash != nil {
-		cppSpec, err := newCppEthereumGenesisSpec(network, conf.Genesis)
+		cppSpec, err := newAlethGenesisSpec(network, conf.Genesis)
 		if err != nil {
 			return nil, err
 		}

cmd/puppeth/puppeth.go

@@ -43,18 +43,23 @@ func main() {
 			Usage: "log level to emit to the screen",
 		},
 	}
-	app.Action = func(c *cli.Context) error {
+	app.Before = func(c *cli.Context) error {
 		// Set up the logger to print everything and the random generator
 		log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(c.Int("loglevel")), log.StreamHandler(os.Stdout, log.TerminalFormat(true))))
 		rand.Seed(time.Now().UnixNano())
 
-		network := c.String("network")
-		if strings.Contains(network, " ") || strings.Contains(network, "-") || strings.ToLower(network) != network {
-			log.Crit("No spaces, hyphens or capital letters allowed in network name")
-		}
-		// Start the wizard and relinquish control
-		makeWizard(c.String("network")).run()
 		return nil
 	}
+	app.Action = runWizard
 	app.Run(os.Args)
 }
+
+// runWizard start the wizard and relinquish control to it.
+func runWizard(c *cli.Context) error {
+	network := c.String("network")
+	if strings.Contains(network, " ") || strings.Contains(network, "-") || strings.ToLower(network) != network {
+		log.Crit("No spaces, hyphens or capital letters allowed in network name")
+	}
+	makeWizard(c.String("network")).run()
+	return nil
+}

cmd/puppeth/testdata/stureby_aleth.json

+{
+  "sealEngine":"Ethash",
+  "params":{
+    "accountStartNonce":"0x00",
+    "maximumExtraDataSize":"0x20",
+    "homesteadForkBlock":"0x2710",
+    "daoHardforkBlock":"0x00",
+    "EIP150ForkBlock":"0x3a98",
+    "EIP158ForkBlock":"0x59d8",
+    "byzantiumForkBlock":"0x7530",
+    "constantinopleForkBlock":"0x9c40",
+    "minGasLimit":"0x1388",
+    "maxGasLimit":"0x7fffffffffffffff",
+    "tieBreakingGas":false,
+    "gasLimitBoundDivisor":"0x0400",
+    "minimumDifficulty":"0x20000",
+    "difficultyBoundDivisor":"0x0800",
+    "durationLimit":"0x0d",
+    "blockReward":"0x4563918244F40000",
+    "networkID":"0x4cb2e",
+    "chainID":"0x4cb2e",
+    "allowFutureBlocks":false
+  },
+  "genesis":{
+    "nonce":"0x0000000000000000",
+    "difficulty":"0x20000",
+    "mixHash":"0x0000000000000000000000000000000000000000000000000000000000000000",
+    "author":"0x0000000000000000000000000000000000000000",
+    "timestamp":"0x59a4e76d",
+    "parentHash":"0x0000000000000000000000000000000000000000000000000000000000000000",
+    "extraData":"0x0000000000000000000000000000000000000000000000000000000b4dc0ffee",
+    "gasLimit":"0x47b760"
+  },
+  "accounts":{
+    "0000000000000000000000000000000000000001":{
+      "balance":"1",
+      "precompiled":{
+        "name":"ecrecover",
+        "linear":{
+          "base":3000,
+          "word":0
+        }
+      }
+    },
+    "0000000000000000000000000000000000000002":{
+      "balance":"1",
+      "precompiled":{
+        "name":"sha256",
+        "linear":{
+          "base":60,
+          "word":12
+        }
+      }
+    },
+    "0000000000000000000000000000000000000003":{
+      "balance":"1",
+      "precompiled":{
+        "name":"ripemd160",
+        "linear":{
+          "base":600,
+          "word":120
+        }
+      }
+    },
+    "0000000000000000000000000000000000000004":{
+      "balance":"1",
+      "precompiled":{
+        "name":"identity",
+        "linear":{
+          "base":15,
+          "word":3
+        }
+      }
+    },
+    "0000000000000000000000000000000000000005":{
+      "balance":"1",
+      "precompiled":{
+        "name":"modexp",
+        "startingBlock":"0x7530"
+      }
+    },
+    "0000000000000000000000000000000000000006":{
+      "balance":"1",
+      "precompiled":{
+        "name":"alt_bn128_G1_add",
+        "startingBlock":"0x7530",
+        "linear":{
+          "base":500,
+          "word":0
+        }
+      }
+    },
+    "0000000000000000000000000000000000000007":{
+      "balance":"1",
+      "precompiled":{
+        "name":"alt_bn128_G1_mul",
+        "startingBlock":"0x7530",
+        "linear":{
+          "base":40000,
+          "word":0
+        }
+      }
+    },
+    "0000000000000000000000000000000000000008":{
+      "balance":"1",
+      "precompiled":{
+        "name":"alt_bn128_pairing_product",
+        "startingBlock":"0x7530"
+      }
+    }
+  }
+}

cmd/puppeth/testdata/stureby_geth.json

+{
+  "config": {
+    "ethash":{},
+    "chainId": 314158,
+    "homesteadBlock": 10000,
+    "eip150Block": 15000,
+    "eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+    "eip155Block": 23000,
+    "eip158Block": 23000,
+    "byzantiumBlock": 30000,
+    "constantinopleBlock": 40000
+  },
+  "nonce": "0x0",
+  "timestamp": "0x59a4e76d",
+  "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+  "extraData": "0x0000000000000000000000000000000000000000000000000000000b4dc0ffee",
+  "gasLimit": "0x47b760",
+  "difficulty": "0x20000",
+  "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+  "coinbase": "0x0000000000000000000000000000000000000000",
+  "alloc": {
+    "0000000000000000000000000000000000000001": {
+      "balance": "0x01"
+    },
+    "0000000000000000000000000000000000000002": {
+      "balance": "0x01"
+    },
+    "0000000000000000000000000000000000000003": {
+      "balance": "0x01"
+    },
+    "0000000000000000000000000000000000000004": {
+      "balance": "0x01"
+    },
+    "0000000000000000000000000000000000000005": {
+      "balance": "0x01"
+    },
+    "0000000000000000000000000000000000000006": {
+      "balance": "0x01"
+    },
+    "0000000000000000000000000000000000000007": {
+      "balance": "0x01"
+    },
+    "0000000000000000000000000000000000000008": {
+      "balance": "0x01"
+    }
+  }
+}

cmd/puppeth/testdata/stureby_parity.json

+{
+  "name":"Stureby",
+  "dataDir":"stureby",
+  "engine":{
+    "Ethash":{
+      "params":{
+        "minimumDifficulty":"0x20000",
+        "difficultyBoundDivisor":"0x800",
+        "durationLimit":"0xd",
+        "blockReward":{
+          "0x0":"0x4563918244f40000",
+          "0x7530":"0x29a2241af62c0000",
+          "0x9c40":"0x1bc16d674ec80000"
+        },
+        "homesteadTransition":"0x2710",
+        "eip100bTransition":"0x7530",
+        "difficultyBombDelays":{
+          "0x7530":"0x2dc6c0",
+          "0x9c40":"0x1e8480"
+        }
+      }
+    }
+  },
+  "params":{
+    "accountStartNonce":"0x0",
+    "maximumExtraDataSize":"0x20",
+    "gasLimitBoundDivisor":"0x400",
+    "minGasLimit":"0x1388",
+    "networkID":"0x4cb2e",
+    "chainID":"0x4cb2e",
+    "maxCodeSize":"0x6000",
+    "maxCodeSizeTransition":"0x0",
+    "eip98Transition": "0x7fffffffffffffff",
+    "eip150Transition":"0x3a98",
+    "eip160Transition":"0x59d8",
+    "eip161abcTransition":"0x59d8",
+    "eip161dTransition":"0x59d8",
+    "eip155Transition":"0x59d8",
+    "eip140Transition":"0x7530",
+    "eip211Transition":"0x7530",
+    "eip214Transition":"0x7530",
+    "eip658Transition":"0x7530",
+    "eip145Transition":"0x9c40",
+    "eip1014Transition":"0x9c40",
+    "eip1052Transition":"0x9c40",
+    "eip1283Transition":"0x9c40"
+  },
+  "genesis":{
+    "seal":{
+      "ethereum":{
+        "nonce":"0x0000000000000000",
+        "mixHash":"0x0000000000000000000000000000000000000000000000000000000000000000"
+      }
+    },
+    "difficulty":"0x20000",
+    "author":"0x0000000000000000000000000000000000000000",
+    "timestamp":"0x59a4e76d",
+    "parentHash":"0x0000000000000000000000000000000000000000000000000000000000000000",
+    "extraData":"0x0000000000000000000000000000000000000000000000000000000b4dc0ffee",
+    "gasLimit":"0x47b760"
+  },
+  "nodes":[
+    "enode://dfa7aca3f5b635fbfe7d0b20575f25e40d9e27b4bfbb3cf74364a42023ad9f25c1a4383bcc8cced86ee511a7d03415345a4df05be37f1dff040e4c780699f1c0@168.61.153.255:31303",
+    "enode://ef441b20dd70aeabf0eac35c3b8a2854e5ce04db0e30be9152ea9fd129359dcbb3f803993303ff5781c755dfd7223f3fe43505f583cccb740949407677412ba9@40.74.91.252:31303",
+    "enode://953b5ea1c8987cf46008232a0160324fd00d41320ecf00e23af86ec8f5396b19eb57ddab37c78141be56f62e9077de4f4dfa0747fa768ed8c8531bbfb1046237@40.70.214.166:31303",
+    "enode://276e613dd4b277a66591e565711e6c8bb107f0905248a9f8f8228c1a87992e156e5114bb9937c02824a9d9d25f76340442cf86e2028bf5293cae19904fb2b98e@35.178.251.52:30303",
+    "enode://064c820d41e52ed7d426ac64b60506c2998235bedc7e67cb497c6faf7bb4fc54fe56fc82d0add3180b747c0c4f40a1108a6f84d7d0629ed606d504528e61cc57@3.8.5.3:30303",
+    "enode://90069fdabcc5e684fa5d59430bebbb12755d9362dfe5006a1485b13d71a78a3812d36e74dd7d88e50b51add01e097ea80f16263aeaa4f0230db6c79e2a97e7ca@217.29.191.142:30303",
+    "enode://0aac74b7fd28726275e466acb5e03bc88a95927e9951eb66b5efb239b2f798ada0690853b2f2823fe4efa408f0f3d4dd258430bc952a5ff70677b8625b3e3b14@40.115.33.57:40404",
+    "enode://0b96415a10f835106d83e090a0528eed5e7887e5c802a6d084e9f1993a9d0fc713781e6e4101f6365e9b91259712f291acc0a9e6e667e22023050d602c36fbe2@40.115.33.57:40414"
+  ],
+  "accounts":{
+    "0000000000000000000000000000000000000001":{
+      "balance":"1",
+      "nonce":"0",
+      "builtin":{
+        "name":"ecrecover",
+        "pricing":{
+          "linear":{
+            "base":3000,
+            "word":0
+          }
+        }
+      }
+    },
+    "0000000000000000000000000000000000000002":{
+      "balance":"1",
+      "nonce":"0",
+      "builtin":{
+        "name":"sha256",
+        "pricing":{
+          "linear":{
+            "base":60,
+            "word":12
+          }
+        }
+      }
+    },
+    "0000000000000000000000000000000000000003":{
+      "balance":"1",
+      "nonce":"0",
+      "builtin":{
+        "name":"ripemd160",
+        "pricing":{
+          "linear":{
+            "base":600,
+            "word":120
+          }
+        }
+      }
+    },
+    "0000000000000000000000000000000000000004":{
+      "balance":"1",
+      "nonce":"0",
+      "builtin":{
+        "name":"identity",
+        "pricing":{
+          "linear":{
+            "base":15,
+            "word":3
+          }
+        }
+      }
+    },
+    "0000000000000000000000000000000000000005":{
+      "balance":"1",
+      "nonce":"0",
+      "builtin":{
+        "name":"modexp",
+        "activate_at":"0x7530",
+        "pricing":{
+          "modexp":{
+            "divisor":20
+          }
+        }
+      }
+    },
+    "0000000000000000000000000000000000000006":{
+      "balance":"1",
+      "nonce":"0",
+      "builtin":{
+        "name":"alt_bn128_add",
+        "activate_at":"0x7530",
+        "pricing":{
+          "linear":{
+            "base":500,
+            "word":0
+          }
+        }
+      }
+    },
+    "0000000000000000000000000000000000000007":{
+      "balance":"1",
+      "nonce":"0",
+      "builtin":{
+        "name":"alt_bn128_mul",
+        "activate_at":"0x7530",
+        "pricing":{
+          "linear":{
+            "base":40000,
+            "word":0
+          }
+        }
+      }
+    },
+    "0000000000000000000000000000000000000008":{
+      "balance":"1",
+      "nonce":"0",
+      "builtin":{
+        "name":"alt_bn128_pairing",
+        "activate_at":"0x7530",
+        "pricing":{
+          "alt_bn128_pairing":{
+            "base":100000,
+            "pair":80000
+          }
+        }
+      }
+    }
+  }
+}

cmd/puppeth/wizard.go

@@ -23,6 +23,7 @@ import (
 	"io/ioutil"
 	"math/big"
 	"net"
+	"net/url"
 	"os"
 	"path/filepath"
 	"sort"
@@ -118,6 +119,47 @@ func (w *wizard) readDefaultString(def string) string {
 	return def
 }
 
+// readDefaultYesNo reads a single line from stdin, trimming if from spaces and
+// interpreting it as a 'yes' or a 'no'. If an empty line is entered, the default
+// value is returned.
+func (w *wizard) readDefaultYesNo(def bool) bool {
+	for {
+		fmt.Printf("> ")
+		text, err := w.in.ReadString('\n')
+		if err != nil {
+			log.Crit("Failed to read user input", "err", err)
+		}
+		if text = strings.ToLower(strings.TrimSpace(text)); text == "" {
+			return def
+		}
+		if text == "y" || text == "yes" {
+			return true
+		}
+		if text == "n" || text == "no" {
+			return false
+		}
+		log.Error("Invalid input, expected 'y', 'yes', 'n', 'no' or empty")
+	}
+}
+
+// readURL reads a single line from stdin, trimming if from spaces and trying to
+// interpret it as a URL (http, https or file).
+func (w *wizard) readURL() *url.URL {
+	for {
+		fmt.Printf("> ")
+		text, err := w.in.ReadString('\n')
+		if err != nil {
+			log.Crit("Failed to read user input", "err", err)
+		}
+		uri, err := url.Parse(strings.TrimSpace(text))
+		if err != nil {
+			log.Error("Invalid input, expected URL", "err", err)
+			continue
+		}
+		return uri
+	}
+}
+
 // readInt reads a single line from stdin, trimming if from spaces, enforcing it
 // to parse into an integer.
 func (w *wizard) readInt() int {

cmd/puppeth/wizard_dashboard.go

@@ -137,14 +137,14 @@ func (w *wizard) deployDashboard() {
 	if w.conf.ethstats != "" {
 		fmt.Println()
 		fmt.Println("Include ethstats secret on dashboard (y/n)? (default = yes)")
-		infos.trusted = w.readDefaultString("y") == "y"
+		infos.trusted = w.readDefaultYesNo(true)
 	}
 	// Try to deploy the dashboard container on the host
 	nocache := false
 	if existed {
 		fmt.Println()
 		fmt.Printf("Should the dashboard be built from scratch (y/n)? (default = no)\n")
-		nocache = w.readDefaultString("n") != "n"
+		nocache = w.readDefaultYesNo(false)
 	}
 	if out, err := deployDashboard(client, w.network, &w.conf, infos, nocache); err != nil {
 		log.Error("Failed to deploy dashboard container", "err", err)

cmd/puppeth/wizard_ethstats.go

@@ -67,11 +67,11 @@ func (w *wizard) deployEthstats() {
 	if existed {
 		fmt.Println()
 		fmt.Printf("Keep existing IP %v blacklist (y/n)? (default = yes)\n", infos.banned)
-		if w.readDefaultString("y") != "y" {
+		if !w.readDefaultYesNo(true) {
 			// The user might want to clear the entire list, although generally probably not
 			fmt.Println()
 			fmt.Printf("Clear out blacklist and start over (y/n)? (default = no)\n")
-			if w.readDefaultString("n") != "n" {
+			if w.readDefaultYesNo(false) {
 				infos.banned = nil
 			}
 			// Offer the user to explicitly add/remove certain IP addresses
@@ -106,7 +106,7 @@ func (w *wizard) deployEthstats() {
 	if existed {
 		fmt.Println()
 		fmt.Printf("Should the ethstats be built from scratch (y/n)? (default = no)\n")
-		nocache = w.readDefaultString("n") != "n"
+		nocache = w.readDefaultYesNo(false)
 	}
 	trusted := make([]string, 0, len(w.servers))
 	for _, client := range w.servers {

cmd/puppeth/wizard_explorer.go

@@ -100,7 +100,7 @@ func (w *wizard) deployExplorer() {
 	if existed {
 		fmt.Println()
 		fmt.Printf("Should the explorer be built from scratch (y/n)? (default = no)\n")
-		nocache = w.readDefaultString("n") != "n"
+		nocache = w.readDefaultYesNo(false)
 	}
 	if out, err := deployExplorer(client, w.network, chain, infos, nocache); err != nil {
 		log.Error("Failed to deploy explorer container", "err", err)

cmd/puppeth/wizard_faucet.go

@@ -81,7 +81,7 @@ func (w *wizard) deployFaucet() {
 	if infos.captchaToken != "" {
 		fmt.Println()
 		fmt.Println("Reuse previous reCaptcha API authorization (y/n)? (default = yes)")
-		if w.readDefaultString("y") != "y" {
+		if !w.readDefaultYesNo(true) {
 			infos.captchaToken, infos.captchaSecret = "", ""
 		}
 	}
@@ -89,7 +89,7 @@ func (w *wizard) deployFaucet() {
 		// No previous authorization (or old one discarded)
 		fmt.Println()
 		fmt.Println("Enable reCaptcha protection against robots (y/n)? (default = no)")
-		if w.readDefaultString("n") == "n" {
+		if !w.readDefaultYesNo(false) {
 			log.Warn("Users will be able to requests funds via automated scripts")
 		} else {
 			// Captcha protection explicitly requested, read the site and secret keys
@@ -132,7 +132,7 @@ func (w *wizard) deployFaucet() {
 		} else {
 			fmt.Println()
 			fmt.Printf("Reuse previous (%s) funding account (y/n)? (default = yes)\n", key.Address.Hex())
-			if w.readDefaultString("y") != "y" {
+			if !w.readDefaultYesNo(true) {
 				infos.node.keyJSON, infos.node.keyPass = "", ""
 			}
 		}
@@ -166,7 +166,7 @@ func (w *wizard) deployFaucet() {
 	if existed {
 		fmt.Println()
 		fmt.Printf("Should the faucet be built from scratch (y/n)? (default = no)\n")
-		nocache = w.readDefaultString("n") != "n"
+		nocache = w.readDefaultYesNo(false)
 	}
 	if out, err := deployFaucet(client, w.network, w.conf.bootnodes, infos, nocache); err != nil {
 		log.Error("Failed to deploy faucet container", "err", err)

cmd/puppeth/wizard_genesis.go

@@ -20,9 +20,13 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"io"
 	"io/ioutil"
 	"math/big"
 	"math/rand"
+	"net/http"
+	"os"
+	"path/filepath"
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -40,11 +44,12 @@ func (w *wizard) makeGenesis() {
 		Difficulty: big.NewInt(524288),
 		Alloc:      make(core.GenesisAlloc),
 		Config: &params.ChainConfig{
-			HomesteadBlock: big.NewInt(1),
-			EIP150Block:    big.NewInt(2),
-			EIP155Block:    big.NewInt(3),
-			EIP158Block:    big.NewInt(3),
-			ByzantiumBlock: big.NewInt(4),
+			HomesteadBlock:      big.NewInt(1),
+			EIP150Block:         big.NewInt(2),
+			EIP155Block:         big.NewInt(3),
+			EIP158Block:         big.NewInt(3),
+			ByzantiumBlock:      big.NewInt(4),
+			ConstantinopleBlock: big.NewInt(5),
 		},
 	}
 	// Figure out which consensus engine to choose
@@ -114,9 +119,13 @@ func (w *wizard) makeGenesis() {
 		}
 		break
 	}
-	// Add a batch of precompile balances to avoid them getting deleted
-	for i := int64(0); i < 256; i++ {
-		genesis.Alloc[common.BigToAddress(big.NewInt(i))] = core.GenesisAccount{Balance: big.NewInt(1)}
+	fmt.Println()
+	fmt.Println("Should the precompile-addresses (0x1 .. 0xff) be pre-funded with 1 wei? (advisable yes)")
+	if w.readDefaultYesNo(true) {
+		// Add a batch of precompile balances to avoid them getting deleted
+		for i := int64(0); i < 256; i++ {
+			genesis.Alloc[common.BigToAddress(big.NewInt(i))] = core.GenesisAccount{Balance: big.NewInt(1)}
+		}
 	}
 	// Query the user for some custom extras
 	fmt.Println()
@@ -130,53 +139,130 @@ func (w *wizard) makeGenesis() {
 	w.conf.flush()
 }
 
+// importGenesis imports a Geth genesis spec into puppeth.
+func (w *wizard) importGenesis() {
+	// Request the genesis JSON spec URL from the user
+	fmt.Println()
+	fmt.Println("Where's the genesis file? (local file or http/https url)")
+	url := w.readURL()
+
+	// Convert the various allowed URLs to a reader stream
+	var reader io.Reader
+
+	switch url.Scheme {
+	case "http", "https":
+		// Remote web URL, retrieve it via an HTTP client
+		res, err := http.Get(url.String())
+		if err != nil {
+			log.Error("Failed to retrieve remote genesis", "err", err)
+			return
+		}
+		defer res.Body.Close()
+		reader = res.Body
+
+	case "":
+		// Schemaless URL, interpret as a local file
+		file, err := os.Open(url.String())
+		if err != nil {
+			log.Error("Failed to open local genesis", "err", err)
+			return
+		}
+		defer file.Close()
+		reader = file
+
+	default:
+		log.Error("Unsupported genesis URL scheme", "scheme", url.Scheme)
+		return
+	}
+	// Parse the genesis file and inject it successful
+	var genesis core.Genesis
+	if err := json.NewDecoder(reader).Decode(&genesis); err != nil {
+		log.Error("Invalid genesis spec: %v", err)
+		return
+	}
+	log.Info("Imported genesis block")
+
+	w.conf.Genesis = &genesis
+	w.conf.flush()
+}
+
 // manageGenesis permits the modification of chain configuration parameters in
 // a genesis config and the export of the entire genesis spec.
 func (w *wizard) manageGenesis() {
 	// Figure out whether to modify or export the genesis
 	fmt.Println()
 	fmt.Println(" 1. Modify existing fork rules")
-	fmt.Println(" 2. Export genesis configuration")
+	fmt.Println(" 2. Export genesis configurations")
 	fmt.Println(" 3. Remove genesis configuration")
 
 	choice := w.read()
-	switch {
-	case choice == "1":
+	switch choice {
+	case "1":
 		// Fork rule updating requested, iterate over each fork
 		fmt.Println()
 		fmt.Printf("Which block should Homestead come into effect? (default = %v)\n", w.conf.Genesis.Config.HomesteadBlock)
 		w.conf.Genesis.Config.HomesteadBlock = w.readDefaultBigInt(w.conf.Genesis.Config.HomesteadBlock)
 
 		fmt.Println()
-		fmt.Printf("Which block should EIP150 come into effect? (default = %v)\n", w.conf.Genesis.Config.EIP150Block)
+		fmt.Printf("Which block should EIP150 (Tangerine Whistle) come into effect? (default = %v)\n", w.conf.Genesis.Config.EIP150Block)
 		w.conf.Genesis.Config.EIP150Block = w.readDefaultBigInt(w.conf.Genesis.Config.EIP150Block)
 
 		fmt.Println()
-		fmt.Printf("Which block should EIP155 come into effect? (default = %v)\n", w.conf.Genesis.Config.EIP155Block)
+		fmt.Printf("Which block should EIP155 (Spurious Dragon) come into effect? (default = %v)\n", w.conf.Genesis.Config.EIP155Block)
 		w.conf.Genesis.Config.EIP155Block = w.readDefaultBigInt(w.conf.Genesis.Config.EIP155Block)
 
 		fmt.Println()
-		fmt.Printf("Which block should EIP158 come into effect? (default = %v)\n", w.conf.Genesis.Config.EIP158Block)
+		fmt.Printf("Which block should EIP158/161 (also Spurious Dragon) come into effect? (default = %v)\n", w.conf.Genesis.Config.EIP158Block)
 		w.conf.Genesis.Config.EIP158Block = w.readDefaultBigInt(w.conf.Genesis.Config.EIP158Block)
 
 		fmt.Println()
 		fmt.Printf("Which block should Byzantium come into effect? (default = %v)\n", w.conf.Genesis.Config.ByzantiumBlock)
 		w.conf.Genesis.Config.ByzantiumBlock = w.readDefaultBigInt(w.conf.Genesis.Config.ByzantiumBlock)
 
+		fmt.Println()
+		fmt.Printf("Which block should Constantinople come into effect? (default = %v)\n", w.conf.Genesis.Config.ConstantinopleBlock)
+		w.conf.Genesis.Config.ConstantinopleBlock = w.readDefaultBigInt(w.conf.Genesis.Config.ConstantinopleBlock)
+
 		out, _ := json.MarshalIndent(w.conf.Genesis.Config, "", "  ")
 		fmt.Printf("Chain configuration updated:\n\n%s\n", out)
 
-	case choice == "2":
+	case "2":
 		// Save whatever genesis configuration we currently have
 		fmt.Println()
-		fmt.Printf("Which file to save the genesis into? (default = %s.json)\n", w.network)
+		fmt.Printf("Which folder to save the genesis specs into? (default = current)\n")
+		fmt.Printf("  Will create %s.json, %s-aleth.json, %s-harmony.json, %s-parity.json\n", w.network, w.network, w.network, w.network)
+
+		folder := w.readDefaultString(".")
+		if err := os.MkdirAll(folder, 0755); err != nil {
+			log.Error("Failed to create spec folder", "folder", folder, "err", err)
+			return
+		}
 		out, _ := json.MarshalIndent(w.conf.Genesis, "", "  ")
-		if err := ioutil.WriteFile(w.readDefaultString(fmt.Sprintf("%s.json", w.network)), out, 0644); err != nil {
+
+		// Export the native genesis spec used by puppeth and Geth
+		gethJson := filepath.Join(folder, fmt.Sprintf("%s.json", w.network))
+		if err := ioutil.WriteFile((gethJson), out, 0644); err != nil {
 			log.Error("Failed to save genesis file", "err", err)
+			return
 		}
-		log.Info("Exported existing genesis block")
+		log.Info("Saved native genesis chain spec", "path", gethJson)
 
-	case choice == "3":
+		// Export the genesis spec used by Aleth (formerly C++ Ethereum)
+		if spec, err := newAlethGenesisSpec(w.network, w.conf.Genesis); err != nil {
+			log.Error("Failed to create Aleth chain spec", "err", err)
+		} else {
+			saveGenesis(folder, w.network, "aleth", spec)
+		}
+		// Export the genesis spec used by Parity
+		if spec, err := newParityChainSpec(w.network, w.conf.Genesis, []string{}); err != nil {
+			log.Error("Failed to create Parity chain spec", "err", err)
+		} else {
+			saveGenesis(folder, w.network, "parity", spec)
+		}
+		// Export the genesis spec used by Harmony (formerly EthereumJ
+		saveGenesis(folder, w.network, "harmony", w.conf.Genesis)
+
+	case "3":
 		// Make sure we don't have any services running
 		if len(w.conf.servers()) > 0 {
 			log.Error("Genesis reset requires all services and servers torn down")
@@ -186,8 +272,20 @@ func (w *wizard) manageGenesis() {
 
 		w.conf.Genesis = nil
 		w.conf.flush()
-
 	default:
 		log.Error("That's not something I can do")
+		return
+	}
+}
+
+// saveGenesis JSON encodes an arbitrary genesis spec into a pre-defined file.
+func saveGenesis(folder, network, client string, spec interface{}) {
+	path := filepath.Join(folder, fmt.Sprintf("%s-%s.json", network, client))
+
+	out, _ := json.Marshal(spec)
+	if err := ioutil.WriteFile(path, out, 0644); err != nil {
+		log.Error("Failed to save genesis file", "client", client, "err", err)
+		return
 	}
+	log.Info("Saved genesis chain spec", "client", client, "path", path)
 }

cmd/puppeth/wizard_intro.go

@@ -131,7 +131,20 @@ func (w *wizard) run() {
 
 		case choice == "2":
 			if w.conf.Genesis == nil {
-				w.makeGenesis()
+				fmt.Println()
+				fmt.Println("What would you like to do? (default = create)")
+				fmt.Println(" 1. Create new genesis from scratch")
+				fmt.Println(" 2. Import already existing genesis")
+
+				choice := w.read()
+				switch {
+				case choice == "" || choice == "1":
+					w.makeGenesis()
+				case choice == "2":
+					w.importGenesis()
+				default:
+					log.Error("That's not something I can do")
+				}
 			} else {
 				w.manageGenesis()
 			}
@@ -149,7 +162,6 @@ func (w *wizard) run() {
 			} else {
 				w.manageComponents()
 			}
-
 		default:
 			log.Error("That's not something I can do")
 		}

cmd/puppeth/wizard_nginx.go

@@ -41,12 +41,12 @@ func (w *wizard) ensureVirtualHost(client *sshClient, port int, def string) (str
 	// Reverse proxy is not running, offer to deploy a new one
 	fmt.Println()
 	fmt.Println("Allow sharing the port with other services (y/n)? (default = yes)")
-	if w.readDefaultString("y") == "y" {
+	if w.readDefaultYesNo(true) {
 		nocache := false
 		if proxy != nil {
 			fmt.Println()
 			fmt.Printf("Should the reverse-proxy be rebuilt from scratch (y/n)? (default = no)\n")
-			nocache = w.readDefaultString("n") != "n"
+			nocache = w.readDefaultYesNo(false)
 		}
 		if out, err := deployNginx(client, w.network, port, nocache); err != nil {
 			log.Error("Failed to deploy reverse-proxy", "err", err)

cmd/puppeth/wizard_node.go

@@ -126,7 +126,7 @@ func (w *wizard) deployNode(boot bool) {
 				} else {
 					fmt.Println()
 					fmt.Printf("Reuse previous (%s) signing account (y/n)? (default = yes)\n", key.Address.Hex())
-					if w.readDefaultString("y") != "y" {
+					if !w.readDefaultYesNo(true) {
 						infos.keyJSON, infos.keyPass = "", ""
 					}
 				}
@@ -165,7 +165,7 @@ func (w *wizard) deployNode(boot bool) {
 	if existed {
 		fmt.Println()
 		fmt.Printf("Should the node be built from scratch (y/n)? (default = no)\n")
-		nocache = w.readDefaultString("n") != "n"
+		nocache = w.readDefaultYesNo(false)
 	}
 	if out, err := deployNode(client, w.network, w.conf.bootnodes, infos, nocache); err != nil {
 		log.Error("Failed to deploy Ethereum node container", "err", err)

cmd/puppeth/wizard_wallet.go

@@ -96,7 +96,7 @@ func (w *wizard) deployWallet() {
 	if existed {
 		fmt.Println()
 		fmt.Printf("Should the wallet be built from scratch (y/n)? (default = no)\n")
-		nocache = w.readDefaultString("n") != "n"
+		nocache = w.readDefaultYesNo(false)
 	}
 	if out, err := deployWallet(client, w.network, w.conf.bootnodes, infos, nocache); err != nil {
 		log.Error("Failed to deploy wallet container", "err", err)