aboutsummaryrefslogtreecommitdiffstats
path: root/tests/helper/vm.go
blob: aa17313b77e1b5398f9c281da0d3c752b1a97d99 (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
package helper

import (
    "math/big"

    "github.com/ethereum/go-ethereum/core"
    "github.com/ethereum/go-ethereum/crypto"
    "github.com/ethereum/go-ethereum/ethutil"
    "github.com/ethereum/go-ethereum/state"
    "github.com/ethereum/go-ethereum/vm"
)

type Env struct {
    depth        int
    state        *state.StateDB
    skipTransfer bool
    Gas          *big.Int

    origin   []byte
    parent   []byte
    coinbase []byte

    number     *big.Int
    time       int64
    difficulty *big.Int
    gasLimit   *big.Int

    logs state.Logs
}

func NewEnv(state *state.StateDB) *Env {
    return &Env{
        state: state,
    }
}

func NewEnvFromMap(state *state.StateDB, envValues map[string]string, exeValues map[string]string) *Env {
    env := NewEnv(state)

    env.origin = ethutil.Hex2Bytes(exeValues["caller"])
    env.parent = ethutil.Hex2Bytes(envValues["previousHash"])
    env.coinbase = ethutil.Hex2Bytes(envValues["currentCoinbase"])
    env.number = ethutil.Big(envValues["currentNumber"])
    env.time = ethutil.Big(envValues["currentTimestamp"]).Int64()
    env.difficulty = ethutil.Big(envValues["currentDifficulty"])
    env.gasLimit = ethutil.Big(envValues["currentGasLimit"])
    env.Gas = new(big.Int)

    return env
}

func (self *Env) Origin() []byte        { return self.origin }
func (self *Env) BlockNumber() *big.Int { return self.number }
func (self *Env) PrevHash() []byte      { return self.parent }
func (self *Env) Coinbase() []byte      { return self.coinbase }
func (self *Env) Time() int64           { return self.time }
func (self *Env) Difficulty() *big.Int  { return self.difficulty }
func (self *Env) BlockHash() []byte     { return nil }
func (self *Env) State() *state.StateDB { return self.state }
func (self *Env) GasLimit() *big.Int    { return self.gasLimit }
func (self *Env) AddLog(log state.Log) {
    self.logs = append(self.logs, log)
}
func (self *Env) Depth() int     { return self.depth }
func (self *Env) SetDepth(i int) { self.depth = i }
func (self *Env) Transfer(from, to vm.Account, amount *big.Int) error {
    return vm.Transfer(from, to, amount)
}

func (self *Env) vm(addr, data []byte, gas, price, value *big.Int) *core.Execution {
    exec := core.NewExecution(self, addr, data, gas, price, value)
    exec.SkipTransfer = self.skipTransfer

    return exec
}

func (self *Env) Call(caller vm.ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
    exe := self.vm(addr, data, gas, price, value)
    ret, err := exe.Call(addr, caller)
    self.Gas = exe.Gas

    return ret, err
}
func (self *Env) CallCode(caller vm.ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
    exe := self.vm(caller.Address(), data, gas, price, value)
    return exe.Call(addr, caller)
}

func (self *Env) Create(caller vm.ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ContextRef) {
    exe := self.vm(addr, data, gas, price, value)
    return exe.Create(caller)
}

func RunVm(state *state.StateDB, env, exec map[string]string) ([]byte, state.Logs, *big.Int, error) {
    var (
        to    = FromHex(exec["address"])
        from  = FromHex(exec["caller"])
        data  = FromHex(exec["data"])
        gas   = ethutil.Big(exec["gas"])
        price = ethutil.Big(exec["gasPrice"])
        value = ethutil.Big(exec["value"])
    )

    caller := state.GetOrNewStateObject(from)

    vmenv := NewEnvFromMap(state, env, exec)
    vmenv.skipTransfer = true
    ret, err := vmenv.Call(caller, to, data, gas, price, value)

    return ret, vmenv.logs, vmenv.Gas, err
}

func RunState(statedb *state.StateDB, env, tx map[string]string) ([]byte, state.Logs, *big.Int, error) {
    var (
        keyPair, _ = crypto.NewKeyPairFromSec([]byte(ethutil.Hex2Bytes(tx["secretKey"])))
        to         = FromHex(tx["to"])
        data       = FromHex(tx["data"])
        gas        = ethutil.Big(tx["gasLimit"])
        price      = ethutil.Big(tx["gasPrice"])
        value      = ethutil.Big(tx["value"])
        caddr      = FromHex(env["currentCoinbase"])
    )

    coinbase := statedb.GetOrNewStateObject(caddr)
    coinbase.SetGasPool(ethutil.Big(env["currentGasLimit"]))

    message := NewMessage(keyPair.Address(), to, data, value, gas, price)
    Log.DebugDetailf("message{ to: %x, from %x, value: %v, gas: %v, price: %v }\n", message.to[:4], message.from[:4], message.value, message.gas, message.price)
    st := core.NewStateTransition(coinbase, message, statedb, nil)
    vmenv := NewEnvFromMap(statedb, env, tx)
    vmenv.origin = keyPair.Address()
    st.Env = vmenv
    ret, err := st.TransitionState()
    statedb.Update(vmenv.Gas)

    return ret, vmenv.logs, vmenv.Gas, err
}

type Message struct {
    from, to          []byte
    value, gas, price *big.Int
    data              []byte
}

func NewMessage(from, to, data []byte, value, gas, price *big.Int) Message {
    return Message{from, to, value, gas, price, data}
}

func (self Message) Hash() []byte       { return nil }
func (self Message) From() []byte       { return self.from }
func (self Message) To() []byte         { return self.to }
func (self Message) GasPrice() *big.Int { return self.price }
func (self Message) Gas() *big.Int      { return self.gas }
func (self Message) Value() *big.Int    { return self.value }
func (self Message) Nonce() uint64      { return 0 }
func (self Message) Data() []byte       { return self.data }