1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
// 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"
"encoding/json"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/swarm/network"
"github.com/ethereum/go-ethereum/swarm/services/swap"
"github.com/ethereum/go-ethereum/swarm/storage"
)
const (
port = "8500"
)
var (
ensRootAddress = common.HexToAddress("0x112234455c3a32fd11230c42e7bccd4a84e02010")
)
// 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
Path string
Port string
PublicKey string
BzzKey string
EnsRoot common.Address
NetworkId uint64
}
// config is agnostic to where private key is coming from
// so managing accounts is outside swarm and left to wrappers
func NewConfig(path string, contract common.Address, prvKey *ecdsa.PrivateKey, networkId uint64) (self *Config, err error) {
address := crypto.PubkeyToAddress(prvKey.PublicKey) // default beneficiary address
dirpath := filepath.Join(path, "bzz-"+common.Bytes2Hex(address.Bytes()))
err = os.MkdirAll(dirpath, os.ModePerm)
if err != nil {
return
}
confpath := filepath.Join(dirpath, "config.json")
var data []byte
pubkey := crypto.FromECDSAPub(&prvKey.PublicKey)
pubkeyhex := common.ToHex(pubkey)
keyhex := crypto.Keccak256Hash(pubkey).Hex()
self = &Config{
SyncParams: network.NewSyncParams(dirpath),
HiveParams: network.NewHiveParams(dirpath),
ChunkerParams: storage.NewChunkerParams(),
StoreParams: storage.NewStoreParams(dirpath),
Port: port,
Path: dirpath,
Swap: swap.DefaultSwapParams(contract, prvKey),
PublicKey: pubkeyhex,
BzzKey: keyhex,
EnsRoot: ensRootAddress,
NetworkId: networkId,
}
data, err = ioutil.ReadFile(confpath)
// if not set in function param, then set default for swarm network, will be overwritten by config file if present
if networkId == 0 {
self.NetworkId = network.NetworkId
}
if err != nil {
if !os.IsNotExist(err) {
return
}
// file does not exist
// write out config file
err = self.Save()
if err != nil {
err = fmt.Errorf("error writing config: %v", err)
}
return
}
// file exists, deserialise
err = json.Unmarshal(data, self)
if err != nil {
return nil, fmt.Errorf("unable to parse config: %v", err)
}
// check public key
if pubkeyhex != self.PublicKey {
return nil, fmt.Errorf("public key does not match the one in the config file %v != %v", pubkeyhex, self.PublicKey)
}
if keyhex != self.BzzKey {
return nil, fmt.Errorf("bzz key does not match the one in the config file %v != %v", keyhex, self.BzzKey)
}
// if set in function param, replace id set from config file
if networkId != 0 {
self.NetworkId = networkId
}
self.Swap.SetKey(prvKey)
if (self.EnsRoot == common.Address{}) {
self.EnsRoot = ensRootAddress
}
return
}
func (self *Config) Save() error {
data, err := json.MarshalIndent(self, "", " ")
if err != nil {
return err
}
err = os.MkdirAll(self.Path, os.ModePerm)
if err != nil {
return err
}
confpath := filepath.Join(self.Path, "config.json")
return ioutil.WriteFile(confpath, data, os.ModePerm)
}
|
