aboutsummaryrefslogtreecommitdiffstats
path: root/cmd/utils/cmd.go
blob: 99e60ff9e780e3bf147b105f88e513d986b79e91 (plain) (blame)
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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
/*
    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/>.
*/
/**
 * @authors
 *  Jeffrey Wilcke <i@jev.io>
 *  Viktor Tron <viktor@ethdev.com>
 */
package utils

import (
    "fmt"
    "os"
    "os/signal"
    "regexp"

    "github.com/ethereum/go-ethereum/core"
    "github.com/ethereum/go-ethereum/core/types"
    "github.com/ethereum/go-ethereum/crypto"
    "github.com/ethereum/go-ethereum/eth"
    "github.com/ethereum/go-ethereum/ethutil"
    "github.com/ethereum/go-ethereum/logger"
    "github.com/ethereum/go-ethereum/rlp"
    rpchttp "github.com/ethereum/go-ethereum/rpc/http"
    "github.com/ethereum/go-ethereum/state"
    "github.com/ethereum/go-ethereum/xeth"
)

var clilogger = logger.NewLogger("CLI")
var interruptCallbacks = []func(os.Signal){}

// Register interrupt handlers callbacks
func RegisterInterrupt(cb func(os.Signal)) {
    interruptCallbacks = append(interruptCallbacks, cb)
}

// go routine that call interrupt handlers in order of registering
func HandleInterrupt() {
    c := make(chan os.Signal, 1)
    go func() {
        signal.Notify(c, os.Interrupt)
        for sig := range c {
            clilogger.Errorf("Shutting down (%v) ... \n", sig)
            RunInterruptCallbacks(sig)
        }
    }()
}

func RunInterruptCallbacks(sig os.Signal) {
    for _, cb := range interruptCallbacks {
        cb(sig)
    }
}

func openLogFile(Datadir string, filename string) *os.File {
    path := ethutil.AbsolutePath(Datadir, filename)
    file, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
    if err != nil {
        panic(fmt.Sprintf("error opening log file '%s': %v", filename, err))
    }
    return file
}

func confirm(message string) bool {
    fmt.Println(message, "Are you sure? (y/n)")
    var r string
    fmt.Scanln(&r)
    for ; ; fmt.Scanln(&r) {
        if r == "n" || r == "y" {
            break
        } else {
            fmt.Printf("Yes or no? (%s)", r)
        }
    }
    return r == "y"
}

func initDataDir(Datadir string) {
    _, err := os.Stat(Datadir)
    if err != nil {
        if os.IsNotExist(err) {
            fmt.Printf("Data directory '%s' doesn't exist, creating it\n", Datadir)
            os.Mkdir(Datadir, 0777)
        }
    }
}

func InitConfig(vmType int, ConfigFile string, Datadir string, EnvPrefix string) *ethutil.ConfigManager {
    initDataDir(Datadir)
    cfg := ethutil.ReadConfig(ConfigFile, Datadir, EnvPrefix)
    cfg.VmType = vmType

    return cfg
}

func exit(err error) {
    status := 0
    if err != nil {
        fmt.Fprintln(os.Stderr, "Fatal: ", err)
        status = 1
    }
    logger.Flush()
    os.Exit(status)
}

// Fatalf formats a message to standard output and exits the program.
func Fatalf(format string, args ...interface{}) {
    fmt.Fprintf(os.Stderr, "Fatal: "+format+"\n", args...)
    logger.Flush()
    os.Exit(1)
}

func StartEthereum(ethereum *eth.Ethereum) {
    clilogger.Infoln("Starting ", ethereum.Name())
    if err := ethereum.Start(); err != nil {
        exit(err)
    }
    RegisterInterrupt(func(sig os.Signal) {
        ethereum.Stop()
        logger.Flush()
    })
}

func KeyTasks(keyManager *crypto.KeyManager, KeyRing string, GenAddr bool, SecretFile string, ExportDir string, NonInteractive bool) {
    var err error
    switch {
    case GenAddr:
        if NonInteractive || confirm("This action overwrites your old private key.") {
            err = keyManager.Init(KeyRing, 0, true)
        }
        exit(err)
    case len(SecretFile) > 0:
        SecretFile = ethutil.ExpandHomePath(SecretFile)

        if NonInteractive || confirm("This action overwrites your old private key.") {
            err = keyManager.InitFromSecretsFile(KeyRing, 0, SecretFile)
        }
        exit(err)
    case len(ExportDir) > 0:
        err = keyManager.Init(KeyRing, 0, false)
        if err == nil {
            err = keyManager.Export(ExportDir)
        }
        exit(err)
    default:
        // Creates a keypair if none exists
        err = keyManager.Init(KeyRing, 0, false)
        if err != nil {
            exit(err)
        }
    }
    clilogger.Infof("Main address %x\n", keyManager.Address())
}

func StartRpc(ethereum *eth.Ethereum, RpcListenAddress string, RpcPort int) {
    var err error
    ethereum.RpcServer, err = rpchttp.NewRpcHttpServer(xeth.New(ethereum), RpcListenAddress, RpcPort)
    if err != nil {
        clilogger.Errorf("Could not start RPC interface (port %v): %v", RpcPort, err)
    } else {
        go ethereum.RpcServer.Start()
    }
}

func FormatTransactionData(data string) []byte {
    d := ethutil.StringToByteFunc(data, func(s string) (ret []byte) {
        slice := regexp.MustCompile("\\n|\\s").Split(s, 1000000000)
        for _, dataItem := range slice {
            d := ethutil.FormatData(dataItem)
            ret = append(ret, d...)
        }
        return
    })

    return d
}

// Replay block
func BlockDo(ethereum *eth.Ethereum, hash []byte) error {
    block := ethereum.ChainManager().GetBlock(hash)
    if block == nil {
        return fmt.Errorf("unknown block %x", hash)
    }

    parent := ethereum.ChainManager().GetBlock(block.ParentHash())

    statedb := state.New(parent.Root(), ethereum.StateDb())
    _, err := ethereum.BlockProcessor().TransitionState(statedb, parent, block, true)
    if err != nil {
        return err
    }

    return nil

}

func ImportChain(chain *core.ChainManager, fn string) error {
    fmt.Printf("importing chain '%s'\n", fn)
    fh, err := os.OpenFile(fn, os.O_RDONLY, os.ModePerm)
    if err != nil {
        return err
    }
    defer fh.Close()

    var blocks types.Blocks
    if err := rlp.Decode(fh, &blocks); err != nil {
        return err
    }

    chain.Reset()
    if err := chain.InsertChain(blocks); err != nil {
        return err
    }
    fmt.Printf("imported %d blocks\n", len(blocks))

    return nil
}