github.com/divan/go-ethereum@v1.8.14-0.20180820134928-1de9ada4016d/swarm/api/config.go (about)

     1  // Copyright 2016 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package api
    18  
    19  import (
    20  	"crypto/ecdsa"
    21  	"fmt"
    22  	"os"
    23  	"path/filepath"
    24  	"time"
    25  
    26  	"github.com/ethereum/go-ethereum/common"
    27  	"github.com/ethereum/go-ethereum/contracts/ens"
    28  	"github.com/ethereum/go-ethereum/crypto"
    29  	"github.com/ethereum/go-ethereum/node"
    30  	"github.com/ethereum/go-ethereum/p2p/discover"
    31  	"github.com/ethereum/go-ethereum/swarm/log"
    32  	"github.com/ethereum/go-ethereum/swarm/network"
    33  	"github.com/ethereum/go-ethereum/swarm/pss"
    34  	"github.com/ethereum/go-ethereum/swarm/services/swap"
    35  	"github.com/ethereum/go-ethereum/swarm/storage"
    36  )
    37  
    38  const (
    39  	DefaultHTTPListenAddr = "127.0.0.1"
    40  	DefaultHTTPPort       = "8500"
    41  )
    42  
    43  // separate bzz directories
    44  // allow several bzz nodes running in parallel
    45  type Config struct {
    46  	// serialised/persisted fields
    47  	*storage.FileStoreParams
    48  	*storage.LocalStoreParams
    49  	*network.HiveParams
    50  	Swap *swap.LocalProfile
    51  	Pss  *pss.PssParams
    52  	//*network.SyncParams
    53  	Contract          common.Address
    54  	EnsRoot           common.Address
    55  	EnsAPIs           []string
    56  	Path              string
    57  	ListenAddr        string
    58  	Port              string
    59  	PublicKey         string
    60  	BzzKey            string
    61  	NodeID            string
    62  	NetworkID         uint64
    63  	SwapEnabled       bool
    64  	SyncEnabled       bool
    65  	DeliverySkipCheck bool
    66  	LightNodeEnabled  bool
    67  	SyncUpdateDelay   time.Duration
    68  	SwapAPI           string
    69  	Cors              string
    70  	BzzAccount        string
    71  	privateKey        *ecdsa.PrivateKey
    72  }
    73  
    74  //create a default config with all parameters to set to defaults
    75  func NewConfig() (c *Config) {
    76  
    77  	c = &Config{
    78  		LocalStoreParams: storage.NewDefaultLocalStoreParams(),
    79  		FileStoreParams:  storage.NewFileStoreParams(),
    80  		HiveParams:       network.NewHiveParams(),
    81  		//SyncParams:    network.NewDefaultSyncParams(),
    82  		Swap:              swap.NewDefaultSwapParams(),
    83  		Pss:               pss.NewPssParams(),
    84  		ListenAddr:        DefaultHTTPListenAddr,
    85  		Port:              DefaultHTTPPort,
    86  		Path:              node.DefaultDataDir(),
    87  		EnsAPIs:           nil,
    88  		EnsRoot:           ens.TestNetAddress,
    89  		NetworkID:         network.DefaultNetworkID,
    90  		SwapEnabled:       false,
    91  		SyncEnabled:       true,
    92  		DeliverySkipCheck: false,
    93  		SyncUpdateDelay:   15 * time.Second,
    94  		SwapAPI:           "",
    95  	}
    96  
    97  	return
    98  }
    99  
   100  //some config params need to be initialized after the complete
   101  //config building phase is completed (e.g. due to overriding flags)
   102  func (c *Config) Init(prvKey *ecdsa.PrivateKey) {
   103  
   104  	address := crypto.PubkeyToAddress(prvKey.PublicKey)
   105  	c.Path = filepath.Join(c.Path, "bzz-"+common.Bytes2Hex(address.Bytes()))
   106  	err := os.MkdirAll(c.Path, os.ModePerm)
   107  	if err != nil {
   108  		log.Error(fmt.Sprintf("Error creating root swarm data directory: %v", err))
   109  		return
   110  	}
   111  
   112  	pubkey := crypto.FromECDSAPub(&prvKey.PublicKey)
   113  	pubkeyhex := common.ToHex(pubkey)
   114  	keyhex := crypto.Keccak256Hash(pubkey).Hex()
   115  
   116  	c.PublicKey = pubkeyhex
   117  	c.BzzKey = keyhex
   118  	c.NodeID = discover.PubkeyID(&prvKey.PublicKey).String()
   119  
   120  	if c.SwapEnabled {
   121  		c.Swap.Init(c.Contract, prvKey)
   122  	}
   123  
   124  	c.privateKey = prvKey
   125  	c.LocalStoreParams.Init(c.Path)
   126  	c.LocalStoreParams.BaseKey = common.FromHex(keyhex)
   127  
   128  	c.Pss = c.Pss.WithPrivateKey(c.privateKey)
   129  }
   130  
   131  func (c *Config) ShiftPrivateKey() (privKey *ecdsa.PrivateKey) {
   132  	if c.privateKey != nil {
   133  		privKey = c.privateKey
   134  		c.privateKey = nil
   135  	}
   136  	return privKey
   137  }