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"

    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/contracts/ens"
    "github.com/ethereum/go-ethereum/crypto"
    "github.com/ethereum/go-ethereum/log"
    "github.com/ethereum/go-ethereum/node"
    "github.com/ethereum/go-ethereum/swarm/network"
    "github.com/ethereum/go-ethereum/swarm/services/swap"
    "github.com/ethereum/go-ethereum/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.StoreParams
    *storage.ChunkerParams
    *network.HiveParams
    Swap *swap.SwapParams
    *network.SyncParams
    Contract    common.Address
    EnsRoot     common.Address
    EnsAPIs     []string
    Path        string
    ListenAddr  string
    Port        string
    PublicKey   string
    BzzKey      string
    NetworkId   uint64
    SwapEnabled bool
    SyncEnabled bool
    SwapApi     string
    Cors        string
    BzzAccount  string
    BootNodes   string
}

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

    self = &Config{
        StoreParams:   storage.NewDefaultStoreParams(),
        ChunkerParams: storage.NewChunkerParams(),
        HiveParams:    network.NewDefaultHiveParams(),
        SyncParams:    network.NewDefaultSyncParams(),
        Swap:          swap.NewDefaultSwapParams(),
        ListenAddr:    DefaultHTTPListenAddr,
        Port:          DefaultHTTPPort,
        Path:          node.DefaultDataDir(),
        EnsAPIs:       nil,
        EnsRoot:       ens.TestNetAddress,
        NetworkId:     network.NetworkId,
        SwapEnabled:   false,
        SyncEnabled:   true,
        SwapApi:       "",
        BootNodes:     "",
    }

    return
}

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

    address := crypto.PubkeyToAddress(prvKey.PublicKey)
    self.Path = filepath.Join(self.Path, "bzz-"+common.Bytes2Hex(address.Bytes()))
    err := os.MkdirAll(self.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()

    self.PublicKey = pubkeyhex
    self.BzzKey = keyhex

    self.Swap.Init(self.Contract, prvKey)
    self.SyncParams.Init(self.Path)
    self.HiveParams.Init(self.Path)
    self.StoreParams.Init(self.Path)
}