go-ethereum/mobile/params.go

// 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/>.

// Contains all the wrappers from the params package.

package geth

import (
	"encoding/json"

	"github.com/ethereum/go-ethereum/core"
	"github.com/ethereum/go-ethereum/p2p/discv5"
	"github.com/ethereum/go-ethereum/params"
)

// MainnetChainConfig returns the chain configurations for the main Ethereum network.
func MainnetChainConfig() *ChainConfig {
	return &ChainConfig{
		ChainID:        params.MainNetChainID.Int64(),
		HomesteadBlock: params.MainNetHomesteadBlock.Int64(),
		DAOForkBlock:   params.MainNetDAOForkBlock.Int64(),
		DAOForkSupport: true,
		EIP150Block:    params.MainNetHomesteadGasRepriceBlock.Int64(),
		EIP150Hash:     Hash{params.MainNetHomesteadGasRepriceHash},
		EIP155Block:    params.MainNetSpuriousDragon.Int64(),
		EIP158Block:    params.MainNetSpuriousDragon.Int64(),
	}
}

// MainnetGenesis returns the JSON spec to use for the main Ethereum network. It
// is actually empty since that defaults to the hard coded binary genesis block.
func MainnetGenesis() string {
	return ""
}

// TestnetChainConfig returns the chain configurations for the Ethereum test network.
func TestnetChainConfig() *ChainConfig {
	return &ChainConfig{
		ChainID:        params.TestNetChainID.Int64(),
		HomesteadBlock: params.TestNetHomesteadBlock.Int64(),
		DAOForkBlock:   0,
		DAOForkSupport: false,
		EIP150Block:    params.TestNetHomesteadGasRepriceBlock.Int64(),
		EIP150Hash:     Hash{params.TestNetHomesteadGasRepriceHash},
		EIP155Block:    params.TestNetSpuriousDragon.Int64(),
		EIP158Block:    params.TestNetSpuriousDragon.Int64(),
	}
}

// TestnetGenesis returns the JSON spec to use for the Ethereum test network.
func TestnetGenesis() string {
	enc, err := json.Marshal(core.DefaultTestnetGenesisBlock())
	if err != nil {
		panic(err)
	}
	return string(enc)
}

// ChainConfig is the core config which determines the blockchain settings.
type ChainConfig struct {
	ChainID        int64 // Chain ID for replay protection
	HomesteadBlock int64 // Homestead switch block
	DAOForkBlock   int64 // TheDAO hard-fork switch block
	DAOForkSupport bool  // Whether the nodes supports or opposes the DAO hard-fork
	EIP150Block    int64 // Homestead gas reprice switch block
	EIP150Hash     Hash  // Homestead gas reprice switch block hash
	EIP155Block    int64 // Replay protection switch block
	EIP158Block    int64 // Empty account pruning switch block
}

// NewChainConfig creates a new chain configuration that transitions immediately
// to homestead and has no notion of the DAO fork (ideal for a private network).
func NewChainConfig() *ChainConfig {
	return new(ChainConfig)
}

// FoundationBootnodes returns the enode URLs of the P2P bootstrap nodes operated
// by the foundation running the V5 discovery protocol.
func FoundationBootnodes() *Enodes {
	nodes := &Enodes{nodes: make([]*discv5.Node, len(params.DiscoveryV5Bootnodes))}
	for i, url := range params.DiscoveryV5Bootnodes {
		nodes.nodes[i] = discv5.MustParseNode(url)
	}
	return nodes
}