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// Copyright 2014 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/>.

// geth is the official command-line client for Ethereum.
package geth

import (
	"fmt"
	"math"
	"os"
	"runtime"
	godebug "runtime/debug"
	"sort"
	"strconv"
	"time"

	"github.com/elastic/gosigar"
	"github.com/Determinant/coreth/cmd/utils"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/console"
	"github.com/Determinant/coreth/eth"
	"github.com/ethereum/go-ethereum/eth/downloader"
	"github.com/ethereum/go-ethereum/ethclient"
	"github.com/Determinant/coreth/internal/debug"
	"github.com/ethereum/go-ethereum/les"
	"github.com/ethereum/go-ethereum/log"
	"github.com/ethereum/go-ethereum/metrics"
	"github.com/Determinant/coreth/node"
	cli "gopkg.in/urfave/cli.v1"
)

const (
	clientIdentifier = "geth" // Client identifier to advertise over the network
)

var (
	// Git SHA1 commit hash of the release (set via linker flags)
	gitCommit = ""
	gitDate   = ""
	// The App that holds all commands and flags.
	App = utils.NewApp(gitCommit, gitDate, "the go-ethereum command line interface")
	// flags that configure the node
	nodeFlags = []cli.Flag{
		utils.IdentityFlag,
		utils.PasswordFileFlag,
		utils.BootnodesFlag,
		utils.BootnodesV4Flag,
		utils.BootnodesV5Flag,
		utils.DataDirFlag,
		utils.AncientFlag,
		utils.KeyStoreDirFlag,
		utils.ExternalSignerFlag,
		utils.NoUSBFlag,
		utils.SmartCardDaemonPathFlag,
		utils.DashboardEnabledFlag,
		utils.DashboardAddrFlag,
		utils.DashboardPortFlag,
		utils.DashboardRefreshFlag,
		utils.EthashCacheDirFlag,
		utils.EthashCachesInMemoryFlag,
		utils.EthashCachesOnDiskFlag,
		utils.EthashDatasetDirFlag,
		utils.EthashDatasetsInMemoryFlag,
		utils.EthashDatasetsOnDiskFlag,
		utils.TxPoolLocalsFlag,
		utils.TxPoolNoLocalsFlag,
		utils.TxPoolJournalFlag,
		utils.TxPoolRejournalFlag,
		utils.TxPoolPriceLimitFlag,
		utils.TxPoolPriceBumpFlag,
		utils.TxPoolAccountSlotsFlag,
		utils.TxPoolGlobalSlotsFlag,
		utils.TxPoolAccountQueueFlag,
		utils.TxPoolGlobalQueueFlag,
		utils.TxPoolLifetimeFlag,
		utils.SyncModeFlag,
		utils.ExitWhenSyncedFlag,
		utils.GCModeFlag,
		utils.LightServeFlag,
		utils.LightLegacyServFlag,
		utils.LightIngressFlag,
		utils.LightEgressFlag,
		utils.LightMaxPeersFlag,
		utils.LightLegacyPeersFlag,
		utils.LightKDFFlag,
		utils.UltraLightServersFlag,
		utils.UltraLightFractionFlag,
		utils.UltraLightOnlyAnnounceFlag,
		utils.WhitelistFlag,
		utils.CacheFlag,
		utils.CacheDatabaseFlag,
		utils.CacheTrieFlag,
		utils.CacheGCFlag,
		utils.CacheNoPrefetchFlag,
		utils.ListenPortFlag,
		utils.MaxPeersFlag,
		utils.MaxPendingPeersFlag,
		utils.MiningEnabledFlag,
		utils.MinerThreadsFlag,
		utils.MinerLegacyThreadsFlag,
		utils.MinerNotifyFlag,
		utils.MinerGasTargetFlag,
		utils.MinerLegacyGasTargetFlag,
		utils.MinerGasLimitFlag,
		utils.MinerGasPriceFlag,
		utils.MinerLegacyGasPriceFlag,
		utils.MinerEtherbaseFlag,
		utils.MinerLegacyEtherbaseFlag,
		utils.MinerExtraDataFlag,
		utils.MinerLegacyExtraDataFlag,
		utils.MinerRecommitIntervalFlag,
		utils.MinerNoVerfiyFlag,
		utils.NATFlag,
		utils.NoDiscoverFlag,
		utils.DiscoveryV5Flag,
		utils.NetrestrictFlag,
		utils.NodeKeyFileFlag,
		utils.NodeKeyHexFlag,
		utils.DeveloperFlag,
		utils.DeveloperPeriodFlag,
		utils.TestnetFlag,
		utils.RinkebyFlag,
		utils.GoerliFlag,
		utils.VMEnableDebugFlag,
		utils.NetworkIdFlag,
		utils.EthStatsURLFlag,
		utils.FakePoWFlag,
		utils.NoCompactionFlag,
		utils.GpoBlocksFlag,
		utils.GpoPercentileFlag,
		utils.EWASMInterpreterFlag,
		utils.EVMInterpreterFlag,
		configFileFlag,
	}

	rpcFlags = []cli.Flag{
		utils.RPCEnabledFlag,
		utils.RPCListenAddrFlag,
		utils.RPCPortFlag,
		utils.RPCCORSDomainFlag,
		utils.RPCVirtualHostsFlag,
		utils.GraphQLEnabledFlag,
		utils.GraphQLListenAddrFlag,
		utils.GraphQLPortFlag,
		utils.GraphQLCORSDomainFlag,
		utils.GraphQLVirtualHostsFlag,
		utils.RPCApiFlag,
		utils.WSEnabledFlag,
		utils.WSListenAddrFlag,
		utils.WSPortFlag,
		utils.WSApiFlag,
		utils.WSAllowedOriginsFlag,
		utils.IPCDisabledFlag,
		utils.IPCPathFlag,
		utils.InsecureUnlockAllowedFlag,
		utils.RPCGlobalGasCap,
	}

	whisperFlags = []cli.Flag{
		utils.WhisperEnabledFlag,
		utils.WhisperMaxMessageSizeFlag,
		utils.WhisperMinPOWFlag,
		utils.WhisperRestrictConnectionBetweenLightClientsFlag,
	}

	metricsFlags = []cli.Flag{
		utils.MetricsEnabledFlag,
		utils.MetricsEnabledExpensiveFlag,
		utils.MetricsEnableInfluxDBFlag,
		utils.MetricsInfluxDBEndpointFlag,
		utils.MetricsInfluxDBDatabaseFlag,
		utils.MetricsInfluxDBUsernameFlag,
		utils.MetricsInfluxDBPasswordFlag,
		utils.MetricsInfluxDBTagsFlag,
	}
)

func init() {
	// Initialize the CLI App and start Geth
	App.Action = geth
	App.HideVersion = true // we have a command to print the version
	App.Copyright = "Copyright 2013-2019 The go-ethereum Authors"
	App.Commands = []cli.Command{
		// See chaincmd.go:
		initCommand,
		importCommand,
		exportCommand,
		importPreimagesCommand,
		exportPreimagesCommand,
		copydbCommand,
		removedbCommand,
		dumpCommand,
		inspectCommand,
		// See accountcmd.go:
		// See consolecmd.go:
		consoleCommand,
		attachCommand,
		javascriptCommand,
		// See misccmd.go:
		makecacheCommand,
		makedagCommand,
		versionCommand,
		licenseCommand,
		// See config.go
		dumpConfigCommand,
		// See retesteth.go
		retestethCommand,
	}
	sort.Sort(cli.CommandsByName(App.Commands))

	App.Flags = append(App.Flags, nodeFlags...)
	App.Flags = append(App.Flags, rpcFlags...)
	App.Flags = append(App.Flags, consoleFlags...)
	App.Flags = append(App.Flags, debug.Flags...)
	App.Flags = append(App.Flags, whisperFlags...)
	App.Flags = append(App.Flags, metricsFlags...)

	App.Before = func(ctx *cli.Context) error {
		logdir := ""
		if ctx.GlobalBool(utils.DashboardEnabledFlag.Name) {
			logdir = (&node.Config{DataDir: utils.MakeDataDir(ctx)}).ResolvePath("logs")
		}
		if err := debug.Setup(ctx, logdir); err != nil {
			return err
		}
		// If we're a full node on mainnet without --cache specified, bump default cache allowance
		if ctx.GlobalString(utils.SyncModeFlag.Name) != "light" && !ctx.GlobalIsSet(utils.CacheFlag.Name) && !ctx.GlobalIsSet(utils.NetworkIdFlag.Name) {
			// Make sure we're not on any supported preconfigured testnet either
			if !ctx.GlobalIsSet(utils.TestnetFlag.Name) && !ctx.GlobalIsSet(utils.RinkebyFlag.Name) && !ctx.GlobalIsSet(utils.GoerliFlag.Name) && !ctx.GlobalIsSet(utils.DeveloperFlag.Name) {
				// Nope, we're really on mainnet. Bump that cache up!
				log.Info("Bumping default cache on mainnet", "provided", ctx.GlobalInt(utils.CacheFlag.Name), "updated", 4096)
				ctx.GlobalSet(utils.CacheFlag.Name, strconv.Itoa(4096))
			}
		}
		// If we're running a light client on any network, drop the cache to some meaningfully low amount
		if ctx.GlobalString(utils.SyncModeFlag.Name) == "light" && !ctx.GlobalIsSet(utils.CacheFlag.Name) {
			log.Info("Dropping default light client cache", "provided", ctx.GlobalInt(utils.CacheFlag.Name), "updated", 128)
			ctx.GlobalSet(utils.CacheFlag.Name, strconv.Itoa(128))
		}
		// Cap the cache allowance and tune the garbage collector
		var mem gosigar.Mem
		// Workaround until OpenBSD support lands into gosigar
		// Check https://github.com/elastic/gosigar#supported-platforms
		if runtime.GOOS != "openbsd" {
			if err := mem.Get(); err == nil {
				allowance := int(mem.Total / 1024 / 1024 / 3)
				if cache := ctx.GlobalInt