path: root/swarm/api/config.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/>.

package api

import (
    "crypto/ecdsa"
    "fmt"
    "os"
    "path/filepath"
    "time"

    "github.com/dexon-foundation/dexon/common"
    "github.com/dexon-foundation/dexon/contracts/ens"
    "github.com/dexon-foundation/dexon/crypto"
    "github.com/dexon-foundation/dexon/node"
    "github.com/dexon-foundation/dexon/p2p/enode"
    "github.com/dexon-foundation/dexon/swarm/log"
    "github.com/dexon-foundation/dexon/swarm/network"
    "github.com/dexon-foundation/dexon/swarm/pss"
    "github.com/dexon-foundation/dexon/swarm/services/swap"
    "github.com/dexon-foundation/dexon/swarm/storage"
)

const (
    DefaultHTTPListenAddr = "127.0.0.1"
    DefaultHTTPPort       = "8500"
)

// separate bzz directories
// allow several bzz nodes running in parallel
type Config struct {
    // serialised/persisted fields
    *storage.FileStoreParams
    *storage.LocalStoreParams
    *network.HiveParams
    Swap *swap.LocalProfile
    Pss  *pss.PssParams
    //*network.SyncParams
    Contract             common.Address
    EnsRoot              common.Address
    EnsAPIs              []string
    Path                 string
    ListenAddr           string
    Port                 string
    PublicKey            string
    BzzKey               string
    NodeID               string
    NetworkID            uint64
    SwapEnabled          bool
    SyncEnabled          bool
    SyncingSkipCheck     bool
    DeliverySkipCheck    bool
    MaxStreamPeerServers int
    LightNodeEnabled     bool
    BootnodeMode         bool
    SyncUpdateDelay      time.Duration
    SwapAPI              string
    Cors                 string
    BzzAccount           string
    GlobalStoreAPI       string
    privateKey           *ecdsa.PrivateKey
}

//create a default config with all parameters to set to defaults
func NewConfig() (c *Config) {

    c = &Config{
        LocalStoreParams: storage.NewDefaultLocalStoreParams(),
        FileStoreParams:  storage.NewFileStoreParams(),
        HiveParams:       network.NewHiveParams(),
        //SyncParams:    network.NewDefaultSyncParams(),
        Swap:                 swap.NewDefaultSwapParams(),
        Pss:                  pss.NewPssParams(),
        ListenAddr:           DefaultHTTPListenAddr,
        Port:                 DefaultHTTPPort,
        Path:                 node.DefaultDataDir(),
        EnsAPIs:              nil,
        EnsRoot:              ens.TestNetAddress,
        NetworkID:            network.DefaultNetworkID,
        SwapEnabled:          false,
        SyncEnabled:          true,
        SyncingSkipCheck:     false,
        MaxStreamPeerServers: 10000,
        DeliverySkipCheck:    true,
        SyncUpdateDelay:      15 * time.Second,
        SwapAPI:              "",
    }

    return
}

//some config params need to be initialized after the complete
//config building phase is completed (e.g. due to overriding flags)
func (c *Config) Init(prvKey *ecdsa.PrivateKey) {

    address := crypto.PubkeyToAddress(prvKey.PublicKey)
    c.Path = filepath.Join(c.Path, "bzz-"+common.Bytes2Hex(address.Bytes()))
    err := os.MkdirAll(c.Path, os.ModePerm)
    if err != nil {
        log.Error(fmt.Sprintf("Error creating root swarm data directory: %v", err))
        return
    }

    pubkey := crypto.FromECDSAPub(&prvKey.PublicKey)
    pubkeyhex := common.ToHex(pubkey)
    keyhex := crypto.Keccak256Hash(pubkey).Hex()

    c.PublicKey = pubkeyhex
    c.BzzKey = keyhex
    c.NodeID = enode.PubkeyToIDV4(&prvKey.PublicKey).String()

    if c.SwapEnabled {
        c.Swap.Init(c.Contract, prvKey)
    }

    c.privateKey = prvKey
    c.LocalStoreParams.Init(c.Path)
    c.LocalStoreParams.BaseKey = common.FromHex(keyhex)

    c.Pss = c.Pss.WithPrivateKey(c.privateKey)
}

func (c *Config) ShiftPrivateKey() (privKey *ecdsa.PrivateKey) {
    if c.privateKey != nil {
        privKey = c.privateKey
        c.privateKey = nil
    }
    return privKey
}