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core: move runtime.CheckWitness interop to a separate package

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This commit is contained in:
Evgenii Stratonikov 2020-04-13 15:56:41 +03:00
parent 8a2130f5b6
commit 9586af32f2
4 changed files with 60 additions and 50 deletions
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54
pkg/core/interop/runtime/witness.go Normal file
View file

@ -0,0 +1,54 @@
package runtime
import (
"github.com/nspcc-dev/neo-go/pkg/core/interop"
"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"
"github.com/pkg/errors"
)
// CheckHashedWitness checks given hash against current list of script hashes
// for verifying in the interop context.
func CheckHashedWitness(ic *interop.Context, hash util.Uint160) (bool, error) {
hashes, err := ic.Chain.GetScriptHashesForVerifying(ic.Tx)
if err != nil {
return false, errors.Wrap(err, "failed to get script hashes")
}
for _, v := range hashes {
if hash.Equals(v) {
return true, nil
}
}
return false, nil
}
// CheckKeyedWitness checks hash of signature check contract with a given public
// key against current list of script hashes for verifying in the interop context.
func CheckKeyedWitness(ic *interop.Context, key *keys.PublicKey) (bool, error) {
return CheckHashedWitness(ic, key.GetScriptHash())
}
// CheckWitness checks witnesses.
func CheckWitness(ic *interop.Context, v *vm.VM) error {
var res bool
var err error
hashOrKey := v.Estack().Pop().Bytes()
hash, err := util.Uint160DecodeBytesBE(hashOrKey)
if err != nil {
var key *keys.PublicKey
key, err = keys.NewPublicKeyFromBytes(hashOrKey)
if err != nil {
return errors.New("parameter given is neither a key nor a hash")
}
res, err = CheckKeyedWitness(ic, key)
} else {
res, err = CheckHashedWitness(ic, hash)
}
if err != nil {
return errors.Wrap(err, "failed to check")
}
v.Estack().PushVal(res)
return nil
}

3
pkg/core/interop_neo.go
View file

@ -7,6 +7,7 @@ import (
"strings"
"github.com/nspcc-dev/neo-go/pkg/core/interop"
"github.com/nspcc-dev/neo-go/pkg/core/interop/runtime"
"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"
@ -635,7 +636,7 @@ func assetCreate(ic *interop.Context, v *vm.VM) error {
if owner.IsInfinity() {
return errors.New("can't have infinity as an owner key")
}
witnessOk, err := checkKeyedWitness(ic, owner)
witnessOk, err := runtime.CheckKeyedWitness(ic, owner)
if err != nil {
return err
}

46
pkg/core/interop_system.go
View file

@ -11,11 +11,9 @@ 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/trigger"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
gherr "github.com/pkg/errors"
"go.uber.org/zap"
)
@ -279,50 +277,6 @@ func runtimeGetTrigger(ic *interop.Context, v *vm.VM) error {
return nil
}
// checkHashedWitness checks given hash against current list of script hashes
// for verifying in the interop context.
func checkHashedWitness(ic *interop.Context, hash util.Uint160) (bool, error) {
hashes, err := ic.Chain.GetScriptHashesForVerifying(ic.Tx)
if err != nil {
return false, gherr.Wrap(err, "failed to get script hashes")
}
for _, v := range hashes {
if hash.Equals(v) {
return true, nil
}
}
return false, nil
}
// checkKeyedWitness checks hash of signature check contract with a given public
// key against current list of script hashes for verifying in the interop context.
func checkKeyedWitness(ic *interop.Context, key *keys.PublicKey) (bool, error) {
return checkHashedWitness(ic, key.GetScriptHash())
}
// runtimeCheckWitness checks witnesses.
func runtimeCheckWitness(ic *interop.Context, v *vm.VM) error {
var res bool
var err error
hashOrKey := v.Estack().Pop().Bytes()
hash, err := util.Uint160DecodeBytesBE(hashOrKey)
if err != nil {
key, err := keys.NewPublicKeyFromBytes(hashOrKey)
if err != nil {
return errors.New("parameter given is neither a key nor a hash")
}
res, err = checkKeyedWitness(ic, key)
} else {
res, err = checkHashedWitness(ic, hash)
}
if err != nil {
return gherr.Wrap(err, "failed to check")
}
v.Estack().PushVal(res)
return nil
}
// runtimeNotify should pass stack item to the notify plugin to handle it, but
// in neo-go the only meaningful thing to do here is to log.
func runtimeNotify(ic *interop.Context, v *vm.VM) error {

7
pkg/core/interops.go
View file

@ -14,6 +14,7 @@ import (
"github.com/nspcc-dev/neo-go/pkg/core/interop/crypto"
"github.com/nspcc-dev/neo-go/pkg/core/interop/enumerator"
"github.com/nspcc-dev/neo-go/pkg/core/interop/iterator"
"github.com/nspcc-dev/neo-go/pkg/core/interop/runtime"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
@ -85,7 +86,7 @@ var systemInterops = []interop.Function{
{Name: "System.Header.GetIndex", Func: headerGetIndex, Price: 1},
{Name: "System.Header.GetPrevHash", Func: headerGetPrevHash, Price: 1},
{Name: "System.Header.GetTimestamp", Func: headerGetTimestamp, Price: 1},
{Name: "System.Runtime.CheckWitness", Func: runtimeCheckWitness, Price: 200},
{Name: "System.Runtime.CheckWitness", Func: runtime.CheckWitness, Price: 200},
{Name: "System.Runtime.Deserialize", Func: runtimeDeserialize, Price: 1},
{Name: "System.Runtime.GetTime", Func: runtimeGetTime, Price: 1},
{Name: "System.Runtime.GetTrigger", Func: runtimeGetTrigger, Price: 1},
@ -163,7 +164,7 @@ var neoInterops = []interop.Function{
{Name: "Neo.Output.GetAssetId", Func: outputGetAssetID, Price: 1},
{Name: "Neo.Output.GetScriptHash", Func: outputGetScriptHash, Price: 1},
{Name: "Neo.Output.GetValue", Func: outputGetValue, Price: 1},
{Name: "Neo.Runtime.CheckWitness", Func: runtimeCheckWitness, Price: 200},
{Name: "Neo.Runtime.CheckWitness", Func: runtime.CheckWitness, Price: 200},
{Name: "Neo.Runtime.Deserialize", Func: runtimeDeserialize, Price: 1},
{Name: "Neo.Runtime.GetTime", Func: runtimeGetTime, Price: 1},
{Name: "Neo.Runtime.GetTrigger", Func: runtimeGetTrigger, Price: 1},
@ -235,7 +236,7 @@ var neoInterops = []interop.Function{
{Name: "AntShares.Output.GetAssetId", Func: outputGetAssetID, Price: 1},
{Name: "AntShares.Output.GetScriptHash", Func: outputGetScriptHash, Price: 1},
{Name: "AntShares.Output.GetValue", Func: outputGetValue, Price: 1},
{Name: "AntShares.Runtime.CheckWitness", Func: runtimeCheckWitness, Price: 200},
{Name: "AntShares.Runtime.CheckWitness", Func: runtime.CheckWitness, Price: 200},
{Name: "AntShares.Runtime.Log", Func: runtimeLog, Price: 1},
{Name: "AntShares.Runtime.Notify", Func: runtimeNotify, Price: 1},
{Name: "AntShares.Storage.Delete", Func: storageDelete, Price: 100},