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vmcli: use manifest for method execution

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This commit is contained in:
Evgenii Stratonikov 2020-12-21 14:27:07 +03:00
parent a0c4deb20f
commit 1d4d93b3eb
2 changed files with 140 additions and 54 deletions
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113
pkg/vm/cli/cli.go
View file

@ -4,8 +4,10 @@ import (
"bytes"
"encoding/base64"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"math/big"
"os"
"strconv"
@ -16,6 +18,7 @@ import (
"github.com/nspcc-dev/neo-go/pkg/compiler"
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
"github.com/nspcc-dev/neo-go/pkg/encoding/bigint"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
@ -23,13 +26,14 @@ import (
)
const (
vmKey = "vm"
boolType = "bool"
boolFalse = "false"
boolTrue = "true"
intType = "int"
stringType = "string"
exitFunc = "exitFunc"
vmKey = "vm"
manifestKey = "manifest"
boolType = "bool"
boolFalse = "false"
boolTrue = "true"
intType = "int"
stringType = "string"
exitFunc = "exitFunc"
)
var commands = []*ishell.Cmd{
@ -74,9 +78,9 @@ var commands = []*ishell.Cmd{
{
Name: "loadnef",
Help: "Load a NEF-consistent script into the VM",
LongHelp: `Usage: loadnef <file>
<file> is mandatory parameter, example:
> loadnef /path/to/script.nef`,
LongHelp: `Usage: loadnef <file> <manifest>
both parameters are mandatory, example:
> loadnef /path/to/script.nef /path/to/manifest.json`,
Func: handleLoadNEF,
},
{
@ -97,7 +101,7 @@ var commands = []*ishell.Cmd{
},
{
Name: "loadgo",
Help: "Compile and load a Go file into the VM",
Help: "Compile and load a Go file with the manifest into the VM",
LongHelp: `Usage: loadgo <file>
<file> is mandatory parameter, example:
> loadgo /path/to/file.go`,
@ -115,10 +119,11 @@ var commands = []*ishell.Cmd{
{
Name: "run",
Help: "Execute the current loaded script",
LongHelp: `Usage: run [<operation> [<parameter>...]]
LongHelp: `Usage: run [<method> [<parameter>...]]
<operation> is an operation name, passed as a first parameter to Main() (and it
can't be 'help' at the moment)
<method> is a contract method, specified in manifest (and it
can't be 'help' at the moment). It can be '_' which will push parameters
onto the stack and execute from the current offset.
<parameter> is a parameter (can be repeated multiple times) that can be specified
as <type>:<value>, where type can be:
'` + boolType + `': supports '` + boolFalse + `' and '` + boolTrue + `' values
@ -130,11 +135,6 @@ var commands = []*ishell.Cmd{
boolean values, everything that can be converted to integer is treated as
integer and everything else is treated like a string.
Passing parameters without operation is not supported. Parameters are packed
into array before they're passed to the script, so effectively 'run' only
supports contracts with signatures like this:
func Main(operation string, args []interface{}) interface{}
Example:
> run put ` + stringType + `:"Something to put"`,
Func: handleRun,
@ -214,6 +214,7 @@ func NewWithConfig(printLogo bool, onExit func(int), c *readline.Config) *VMCLI
printLogo: printLogo,
}
vmcli.shell.Set(vmKey, vmcli.vm)
vmcli.shell.Set(manifestKey, new(manifest.Manifest))
vmcli.shell.Set(exitFunc, onExit)
for _, c := range commands {
vmcli.shell.AddCmd(c)
@ -226,6 +227,15 @@ func getVMFromContext(c *ishell.Context) *vm.VM {
return c.Get(vmKey).(*vm.VM)
}
func getManifestFromContext(c *ishell.Context) *manifest.Manifest {
return c.Get(manifestKey).(*manifest.Manifest)
}
func setManifestInContext(c *ishell.Context, m *manifest.Manifest) {
old := getManifestFromContext(c)
*old = *m
}
func checkVMIsReady(c *ishell.Context) bool {
v := getVMFromContext(c)
if v == nil || !v.Ready() {
@ -280,15 +290,21 @@ func handleXStack(c *ishell.Context) {
func handleLoadNEF(c *ishell.Context) {
v := getVMFromContext(c)
if len(c.Args) < 1 {
c.Err(fmt.Errorf("%w: <file>", ErrMissingParameter))
if len(c.Args) < 2 {
c.Err(fmt.Errorf("%w: <file> <manifest>", ErrMissingParameter))
return
}
if err := v.LoadFile(c.Args[0]); err != nil {
c.Err(err)
} else {
c.Printf("READY: loaded %d instructions\n", v.Context().LenInstr())
return
}
m, err := getManifestFromFile(c.Args[1])
if err != nil {
c.Err(err)
return
}
c.Printf("READY: loaded %d instructions\n", v.Context().LenInstr())
setManifestInContext(c, m)
changePrompt(c, v)
}
@ -330,32 +346,71 @@ func handleLoadGo(c *ishell.Context) {
c.Err(fmt.Errorf("%w: <file>", ErrMissingParameter))
return
}
b, err := compiler.Compile(c.Args[0], nil)
b, di, err := compiler.CompileWithDebugInfo(c.Args[0], nil)
if err != nil {
c.Err(err)
return
}
// Don't perform checks, just load.
m, err := di.ConvertToManifest(&compiler.Options{})
if err != nil {
c.Err(fmt.Errorf("can't create manifest: %w", err))
return
}
setManifestInContext(c, m)
v.Load(b)
c.Printf("READY: loaded %d instructions\n", v.Context().LenInstr())
changePrompt(c, v)
}
func getManifestFromFile(name string) (*manifest.Manifest, error) {
bs, err := ioutil.ReadFile(name)
if err != nil {
return nil, fmt.Errorf("%w: can't read manifest", ErrInvalidParameter)
}
var m manifest.Manifest
if err := json.Unmarshal(bs, &m); err != nil {
return nil, fmt.Errorf("%w: can't unmarshal manifest", ErrInvalidParameter)
}
return &m, nil
}
func handleRun(c *ishell.Context) {
v := getVMFromContext(c)
m := getManifestFromContext(c)
if len(c.Args) != 0 {
var (
method []byte
params []stackitem.Item
err error
params []stackitem.Item
offset int
err error
runCurrent = c.Args[0] != "_"
)
method = []byte(c.Args[0])
if runCurrent {
md := m.ABI.GetMethod(c.Args[0])
if md == nil {
c.Err(fmt.Errorf("%w: method not found", ErrInvalidParameter))
return
}
offset = md.Offset
}
params, err = parseArgs(c.Args[1:])
if err != nil {
c.Err(err)
return
}
v.LoadArgs(method, params)
for i := len(params) - 1; i >= 0; i-- {
v.Estack().PushVal(params[i])
}
if runCurrent {
v.Jump(v.Context(), offset)
if initMD := m.ABI.GetMethod(manifest.MethodInit); initMD != nil {
v.Call(v.Context(), initMD.Offset)
}
}
}
runVMWithHandling(c, v)
changePrompt(c, v)

81
pkg/vm/cli/cli_test.go
View file

@ -155,9 +155,7 @@ func TestLoad(t *testing.T) {
})
src := `package kek
func Main(op string, args []interface{}) int {
a := args[0].(int)
b := args[1].(int)
func Main(op string, a, b int) int {
if op == "add" {
return a + b
} else {
@ -179,7 +177,7 @@ func TestLoad(t *testing.T) {
"loadgo",
"loadgo "+filenameErr,
"loadgo "+filename,
"run add 3 5")
"run main add 3 5")
e.checkError(t, ErrMissingParameter)
e.checkNextLine(t, "Error:")
@ -189,7 +187,7 @@ func TestLoad(t *testing.T) {
t.Run("loadnef", func(t *testing.T) {
config.Version = "0.92.0-test"
script, err := compiler.Compile("test", strings.NewReader(src))
script, di, err := compiler.CompileWithDebugInfo("test", strings.NewReader(src))
require.NoError(t, err)
nefFile, err := nef.NewFile(script)
require.NoError(t, err)
@ -197,18 +195,29 @@ func TestLoad(t *testing.T) {
rawNef, err := nefFile.Bytes()
require.NoError(t, err)
require.NoError(t, ioutil.WriteFile(filename, rawNef, os.ModePerm))
m, err := di.ConvertToManifest(&compiler.Options{})
require.NoError(t, err)
manifestFile := path.Join(tmpDir, "vmtestcontract.manifest.json")
rawManifest, err := json.Marshal(m)
require.NoError(t, err)
require.NoError(t, ioutil.WriteFile(manifestFile, rawManifest, os.ModePerm))
filenameErr := path.Join(tmpDir, "vmtestcontract_err.nef")
require.NoError(t, ioutil.WriteFile(filenameErr, append([]byte{1, 2, 3, 4}, rawNef...), os.ModePerm))
notExists := path.Join(tmpDir, "notexists.json")
e := newTestVMCLI(t)
e.runProg(t,
"loadnef",
"loadnef "+filenameErr,
"loadnef "+filename,
"run add 3 5")
"loadnef "+filenameErr+" "+manifestFile,
"loadnef "+filename+" "+notExists,
"loadnef "+filename+" "+filename,
"loadnef "+filename+" "+manifestFile,
"run main add 3 5")
e.checkError(t, ErrMissingParameter)
e.checkNextLine(t, "Error:")
e.checkNextLine(t, "Error:")
e.checkNextLine(t, "Error:")
e.checkNextLine(t, "READY: loaded \\d* instructions")
e.checkStack(t, 8)
})
@ -216,17 +225,21 @@ func TestLoad(t *testing.T) {
func TestRunWithDifferentArguments(t *testing.T) {
src := `package kek
func Main(op string, args []interface{}) interface{} {
switch op {
case "getbool":
return args[0].(bool)
case "getint":
return args[0].(int)
case "getstring":
return args[0].(string)
default:
return nil
}
var a = 1
func init() {
a += 1
}
func InitHasRun() bool {
return a == 2
}
func Negate(arg bool) bool {
return !arg
}
func GetInt(arg int) int {
return arg
}
func GetString(arg string) string {
return arg
}`
filename := path.Join(os.TempDir(), "run_vmtestcontract.go")
@ -235,14 +248,23 @@ func TestRunWithDifferentArguments(t *testing.T) {
e := newTestVMCLI(t)
e.runProg(t,
"loadgo "+filename, "run getbool true",
"loadgo "+filename, "run getbool false",
"loadgo "+filename, "run getbool bool:invalid",
"loadgo "+filename, "run getint 123",
"loadgo "+filename, "run getint int:invalid",
"loadgo "+filename, "run getstring validstring",
"loadgo "+filename, "run notexists",
"loadgo "+filename, "run negate false",
"loadgo "+filename, "run negate true",
"loadgo "+filename, "run negate bool:invalid",
"loadgo "+filename, "run getInt 123",
"loadgo "+filename, "run getInt int:invalid",
"loadgo "+filename, "run getString validstring",
"loadgo "+filename, "run initHasRun",
"loadhex "+hex.EncodeToString([]byte{byte(opcode.ADD)}),
"run _ 1 2",
"loadbase64 "+base64.StdEncoding.EncodeToString([]byte{byte(opcode.MUL)}),
"run _ 21 2",
)
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkNextLine(t, "Error:")
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkStack(t, true)
@ -260,6 +282,15 @@ func TestRunWithDifferentArguments(t *testing.T) {
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkStack(t, "validstring")
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkStack(t, true)
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkStack(t, 3)
e.checkNextLine(t, "READY: loaded \\d.* instructions")
e.checkStack(t, 42)
}
func TestPrintOps(t *testing.T) {