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core: implement System.Contract.CreateStandardAccount syscall

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This commit is contained in:
Evgenii Stratonikov 2020-06-16 11:25:30 +03:00
parent 5b4f38d717
commit 52a27e9be4
3 changed files with 35 additions and 0 deletions
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12
pkg/core/interop_system.go
View file

@ -12,6 +12,7 @@ import (
"github.com/nspcc-dev/neo-go/pkg/core/interop"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
@ -486,3 +487,14 @@ func contractIsStandard(ic *interop.Context, v *vm.VM) error {
v.Estack().PushVal(result)
return nil
}
// contractCreateStandardAccount calculates contract scripthash for a given public key.
func contractCreateStandardAccount(ic *interop.Context, v *vm.VM) error {
h := v.Estack().Pop().Bytes()
p, err := keys.NewPublicKeyFromBytes(h)
if err != nil {
return err
}
v.Estack().PushVal(p.GetScriptHash().BytesBE())
return nil
}

22
pkg/core/interop_system_test.go
View file

@ -7,6 +7,7 @@ import (
"github.com/nspcc-dev/dbft/crypto"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
"github.com/stretchr/testify/require"
@ -175,3 +176,24 @@ func TestContractIsStandard(t *testing.T) {
require.False(t, v.Estack().Pop().Bool())
})
}
func TestContractCreateAccount(t *testing.T) {
v, ic, chain := createVM(t)
defer chain.Close()
t.Run("Good", func(t *testing.T) {
priv, err := keys.NewPrivateKey()
require.NoError(t, err)
pub := priv.PublicKey()
v.Estack().PushVal(pub.Bytes())
require.NoError(t, contractCreateStandardAccount(ic, v))
value := v.Estack().Pop().Bytes()
u, err := util.Uint160DecodeBytesBE(value)
require.NoError(t, err)
require.Equal(t, pub.GetScriptHash(), u)
})
t.Run("InvalidKey", func(t *testing.T) {
v.Estack().PushVal([]byte{1, 2, 3})
require.Error(t, contractCreateStandardAccount(ic, v))
})
}

1
pkg/core/interops.go
View file

@ -89,6 +89,7 @@ var systemInterops = []interop.Function{
AllowedTriggers: trigger.System | trigger.Application, RequiredFlags: smartcontract.AllowCall},
{Name: "System.Contract.Create", Func: contractCreate, Price: 0,
AllowedTriggers: trigger.Application, RequiredFlags: smartcontract.AllowModifyStates},
{Name: "System.Contract.CreateStandardAccount", Func: contractCreateStandardAccount, Price: 10000},
{Name: "System.Contract.Destroy", Func: contractDestroy, Price: 1000000,
AllowedTriggers: trigger.Application, RequiredFlags: smartcontract.AllowModifyStates},
{Name: "System.Contract.IsStandard", Func: contractIsStandard, Price: 30000},