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
|
package vm
import (
"fmt"
"io/ioutil"
"log"
"math/big"
"os"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/state"
"github.com/ethereum/go-ethereum/trie"
checker "gopkg.in/check.v1"
)
type VmSuite struct{}
var _ = checker.Suite(&VmSuite{})
var big9 = ethutil.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000009")
const mutcode = `
var x = 0;
for i := 0; i < 10; i++ {
x = i
}
return x`
type TestEnv struct{}
func (TestEnv) Origin() []byte { return nil }
func (TestEnv) BlockNumber() *big.Int { return nil }
func (TestEnv) BlockHash() []byte { return nil }
func (TestEnv) PrevHash() []byte { return nil }
func (TestEnv) Coinbase() []byte { return nil }
func (TestEnv) Time() int64 { return 0 }
func (TestEnv) GasLimit() *big.Int { return nil }
func (TestEnv) Difficulty() *big.Int { return nil }
func (TestEnv) Value() *big.Int { return nil }
func (TestEnv) AddLog(*state.Log) {}
func (TestEnv) Transfer(from, to Account, amount *big.Int) error {
return nil
}
// This is likely to fail if anything ever gets looked up in the state trie :-)
func (TestEnv) State() *state.State {
return state.New(trie.New(nil, ""))
}
func setup(level logger.LogLevel, typ Type) (*Closure, VirtualMachine) {
code, err := ethutil.Compile(mutcode, true)
if err != nil {
log.Fatal(err)
}
// Pipe output to /dev/null
logger.AddLogSystem(logger.NewStdLogSystem(ioutil.Discard, log.LstdFlags, level))
ethutil.ReadConfig(".ethtest", "/tmp/ethtest", "")
stateObject := state.NewStateObject([]byte{'j', 'e', 'f', 'f'})
callerClosure := NewClosure(nil, stateObject, stateObject, code, big.NewInt(1000000), big.NewInt(0))
return callerClosure, New(TestEnv{}, typ)
}
func (s *VmSuite) TestDebugVm(c *checker.C) {
closure, vm := setup(logger.DebugLevel, DebugVmTy)
ret, _, e := closure.Call(vm, nil)
c.Assert(e, checker.NotNil)
c.Skip("Depends on mutan. Requires serpent implementation")
c.Assert(ret, checker.DeepEquals, big9)
}
func (s *VmSuite) TestVm(c *checker.C) {
closure, vm := setup(logger.DebugLevel, StandardVmTy)
ret, _, e := closure.Call(vm, nil)
c.Assert(e, checker.NotNil)
c.Skip("Depends on mutan. Requires serpent implementation")
c.Assert(ret, checker.DeepEquals, big9)
}
func (s *VmSuite) BenchmarkDebugVm(c *checker.C) {
closure, vm := setup(logger.InfoLevel, StandardVmTy)
c.ResetTimer()
for i := 0; i < c.N; i++ {
closure.Call(vm, nil)
}
}
func (s *VmSuite) BenchmarkVm(c *checker.C) {
closure, vm := setup(logger.InfoLevel, DebugVmTy)
c.ResetTimer()
for i := 0; i < c.N; i++ {
closure.Call(vm, nil)
}
}
func RunCode(mutCode string, typ Type) []byte {
code, err := ethutil.Compile(mutCode, true)
if err != nil {
log.Fatal(err)
}
logger.AddLogSystem(logger.NewStdLogSystem(os.Stdout, log.LstdFlags, logger.InfoLevel))
ethutil.ReadConfig(".ethtest", "/tmp/ethtest", "")
stateObject := state.NewStateObject([]byte{'j', 'e', 'f', 'f'})
closure := NewClosure(nil, stateObject, stateObject, code, big.NewInt(1000000), big.NewInt(0))
vm := New(TestEnv{}, typ)
ret, _, e := closure.Call(vm, nil)
if e != nil {
fmt.Println(e)
}
return ret
}
func (s *VmSuite) TestBuildInSha256(c *checker.C) {
ret := RunCode(`
var in = 42
var out = 0
call(0x2, 0, 10000, in, out)
return out
`, DebugVmTy)
exp := crypto.Sha256(ethutil.LeftPadBytes([]byte{42}, 32))
c.Skip("Depends on mutan. Requires serpent implementation")
c.Assert(ret, checker.DeepEquals, exp)
}
func (s *VmSuite) TestBuildInRipemd(c *checker.C) {
ret := RunCode(`
var in = 42
var out = 0
call(0x3, 0, 10000, in, out)
return out
`, DebugVmTy)
exp := ethutil.RightPadBytes(crypto.Ripemd160(ethutil.LeftPadBytes([]byte{42}, 32)), 32)
c.Skip("Depends on mutan. Requires serpent implementation")
c.Assert(ret, checker.DeepEquals, exp)
}
func (s *VmSuite) TestOog(c *checker.C) {
// This tests takes a long time and will eventually run out of gas
// t.Skip()
c.Skip("This tests takes a long time and will eventually run out of gas")
logger.AddLogSystem(logger.NewStdLogSystem(os.Stdout, log.LstdFlags, logger.InfoLevel))
ethutil.ReadConfig(".ethtest", "/tmp/ethtest", "")
stateObject := state.NewStateObject([]byte{'j', 'e', 'f', 'f'})
closure := NewClosure(nil, stateObject, stateObject, ethutil.Hex2Bytes("60ff60ff600057"), big.NewInt(1000000), big.NewInt(0))
vm := New(TestEnv{}, DebugVmTy)
_, _, e := closure.Call(vm, nil)
if e != nil {
fmt.Println(e)
}
}
|
