249 lines
8.4 KiB
Go
249 lines
8.4 KiB
Go
package core
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import (
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"errors"
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"math/big"
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"testing"
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"github.com/nspcc-dev/neo-go/internal/testchain"
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"github.com/nspcc-dev/neo-go/pkg/config/netmode"
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"github.com/nspcc-dev/neo-go/pkg/core/block"
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"github.com/nspcc-dev/neo-go/pkg/core/interop/interopnames"
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"github.com/nspcc-dev/neo-go/pkg/core/native"
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"github.com/nspcc-dev/neo-go/pkg/core/state"
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"github.com/nspcc-dev/neo-go/pkg/core/transaction"
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"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
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"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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"github.com/nspcc-dev/neo-go/pkg/io"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/nef"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/vm"
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"github.com/nspcc-dev/neo-go/pkg/vm/emit"
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"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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"github.com/stretchr/testify/require"
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)
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// getTestContractState returns test contract which uses oracles.
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func getOracleContractState(h util.Uint160) *state.Contract {
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w := io.NewBufBinWriter()
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emit.Int(w.BinWriter, 5)
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emit.Opcodes(w.BinWriter, opcode.PACK)
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emit.Int(w.BinWriter, int64(callflag.All))
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emit.String(w.BinWriter, "request")
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emit.Bytes(w.BinWriter, h.BytesBE())
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emit.Syscall(w.BinWriter, interopnames.SystemContractCall)
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emit.Opcodes(w.BinWriter, opcode.DROP)
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emit.Opcodes(w.BinWriter, opcode.RET)
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// `handle` method aborts if len(userData) == 2
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offset := w.Len()
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emit.Opcodes(w.BinWriter, opcode.OVER)
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emit.Opcodes(w.BinWriter, opcode.SIZE)
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emit.Int(w.BinWriter, 2)
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emit.Instruction(w.BinWriter, opcode.JMPNE, []byte{3})
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emit.Opcodes(w.BinWriter, opcode.ABORT)
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emit.Int(w.BinWriter, 4) // url, userData, code, result
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emit.Opcodes(w.BinWriter, opcode.PACK)
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emit.Syscall(w.BinWriter, interopnames.SystemBinarySerialize)
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emit.String(w.BinWriter, "lastOracleResponse")
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emit.Syscall(w.BinWriter, interopnames.SystemStorageGetContext)
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emit.Syscall(w.BinWriter, interopnames.SystemStoragePut)
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emit.Opcodes(w.BinWriter, opcode.RET)
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m := manifest.NewManifest("TestOracle")
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m.ABI.Methods = []manifest.Method{
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{
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Name: "requestURL",
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Offset: 0,
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Parameters: []manifest.Parameter{
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manifest.NewParameter("url", smartcontract.StringType),
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manifest.NewParameter("filter", smartcontract.StringType),
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manifest.NewParameter("callback", smartcontract.StringType),
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manifest.NewParameter("userData", smartcontract.AnyType),
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manifest.NewParameter("gasForResponse", smartcontract.IntegerType),
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},
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ReturnType: smartcontract.VoidType,
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},
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{
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Name: "handle",
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Offset: offset,
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Parameters: []manifest.Parameter{
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manifest.NewParameter("url", smartcontract.StringType),
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manifest.NewParameter("userData", smartcontract.AnyType),
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manifest.NewParameter("code", smartcontract.IntegerType),
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manifest.NewParameter("result", smartcontract.ByteArrayType),
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},
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ReturnType: smartcontract.VoidType,
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},
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}
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perm := manifest.NewPermission(manifest.PermissionHash, h)
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perm.Methods.Add("request")
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m.Permissions = append(m.Permissions, *perm)
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script := w.Bytes()
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ne, err := nef.NewFile(script)
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if err != nil {
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panic(err)
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}
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return &state.Contract{
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ContractBase: state.ContractBase{
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NEF: *ne,
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Hash: hash.Hash160(script),
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Manifest: *m,
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ID: 42,
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},
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}
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}
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func putOracleRequest(t *testing.T, h util.Uint160, bc *Blockchain,
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url string, filter *string, cb string, userData []byte, gas int64) util.Uint256 {
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var filtItem interface{}
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if filter != nil {
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filtItem = *filter
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}
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res, err := invokeContractMethod(bc, gas+50_000_000+5_000_000, h, "requestURL",
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url, filtItem, cb, userData, gas)
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require.NoError(t, err)
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return res.Container
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}
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func TestOracle_Request(t *testing.T) {
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bc := newTestChain(t)
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defer bc.Close()
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orc := bc.contracts.Oracle
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cs := getOracleContractState(orc.Hash)
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require.NoError(t, bc.contracts.Management.PutContractState(bc.dao, cs))
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gasForResponse := int64(2000_1234)
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var filter = "flt"
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userData := []byte("custom info")
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txHash := putOracleRequest(t, cs.Hash, bc, "url", &filter, "handle", userData, gasForResponse)
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req, err := orc.GetRequestInternal(bc.dao, 0)
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require.NotNil(t, req)
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require.NoError(t, err)
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require.Equal(t, txHash, req.OriginalTxID)
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require.Equal(t, "url", req.URL)
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require.Equal(t, filter, *req.Filter)
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require.Equal(t, cs.Hash, req.CallbackContract)
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require.Equal(t, "handle", req.CallbackMethod)
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require.Equal(t, uint64(gasForResponse), req.GasForResponse)
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idList, err := orc.GetIDListInternal(bc.dao, "url")
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require.NoError(t, err)
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require.Equal(t, &native.IDList{0}, idList)
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// Finish.
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priv, err := keys.NewPrivateKey()
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require.NoError(t, err)
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pub := priv.PublicKey()
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tx := transaction.New(netmode.UnitTestNet, []byte{}, 0)
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bl := block.New(netmode.UnitTestNet, bc.config.StateRootInHeader)
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bl.Index = bc.BlockHeight() + 1
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setSigner(tx, testchain.CommitteeScriptHash())
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ic := bc.newInteropContext(trigger.Application, bc.dao, bl, tx)
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ic.SpawnVM()
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ic.VM.LoadScript([]byte{byte(opcode.RET)})
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err = bc.contracts.Designate.DesignateAsRole(ic, native.RoleOracle, keys.PublicKeys{pub})
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require.NoError(t, err)
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tx = transaction.New(netmode.UnitTestNet, orc.GetOracleResponseScript(), 0)
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ic.Tx = tx
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ic.Block = bc.newBlock(tx)
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err = orc.FinishInternal(ic)
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require.True(t, errors.Is(err, native.ErrResponseNotFound), "got: %v", err)
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resp := &transaction.OracleResponse{
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ID: 12,
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Code: transaction.Success,
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Result: []byte{4, 8, 15, 16, 23, 42},
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}
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tx.Attributes = []transaction.Attribute{{
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Type: transaction.OracleResponseT,
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Value: resp,
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}}
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err = orc.FinishInternal(ic)
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require.True(t, errors.Is(err, native.ErrRequestNotFound), "got: %v", err)
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// We need to ensure that callback is called thus, executing full script is necessary.
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resp.ID = 0
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ic.VM.LoadScriptWithFlags(tx.Script, callflag.All)
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require.NoError(t, ic.VM.Run())
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si := ic.DAO.GetStorageItem(cs.ID, []byte("lastOracleResponse"))
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require.NotNil(t, si)
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item, err := stackitem.DeserializeItem(si.Value)
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require.NoError(t, err)
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arr, ok := item.Value().([]stackitem.Item)
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require.True(t, ok)
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require.Equal(t, []byte("url"), arr[0].Value())
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require.Equal(t, userData, arr[1].Value())
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require.Equal(t, big.NewInt(int64(resp.Code)), arr[2].Value())
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require.Equal(t, resp.Result, arr[3].Value())
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// Check that processed request is removed during `postPersist`.
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_, err = orc.GetRequestInternal(ic.DAO, 0)
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require.NoError(t, err)
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require.NoError(t, orc.PostPersist(ic))
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_, err = orc.GetRequestInternal(ic.DAO, 0)
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require.Error(t, err)
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t.Run("ErrorOnFinish", func(t *testing.T) {
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const reqID = 1
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putOracleRequest(t, cs.Hash, bc, "url", nil, "handle", []byte{1, 2}, gasForResponse)
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_, err := orc.GetRequestInternal(bc.dao, reqID) // ensure ID is 1
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require.NoError(t, err)
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tx = transaction.New(netmode.UnitTestNet, orc.GetOracleResponseScript(), 0)
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tx.Attributes = []transaction.Attribute{{
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Type: transaction.OracleResponseT,
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Value: &transaction.OracleResponse{
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ID: reqID,
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Code: transaction.Success,
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Result: []byte{4, 8, 15, 16, 23, 42},
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},
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}}
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ic := bc.newInteropContext(trigger.Application, bc.dao, bc.newBlock(tx), tx)
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ic.VM = ic.SpawnVM()
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ic.VM.LoadScriptWithFlags(tx.Script, callflag.All)
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require.Error(t, ic.VM.Run())
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// Request is cleaned up even if callback failed.
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require.NoError(t, orc.PostPersist(ic))
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_, err = orc.GetRequestInternal(ic.DAO, reqID)
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require.Error(t, err)
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})
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t.Run("BadRequest", func(t *testing.T) {
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var doBadRequest = func(t *testing.T, h util.Uint160, url string, filter *string, cb string, userData []byte, gas int64) {
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txHash := putOracleRequest(t, h, bc, url, filter, cb, userData, gas)
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aer, err := bc.GetAppExecResults(txHash, trigger.Application)
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require.NoError(t, err)
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require.Equal(t, 1, len(aer))
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require.Equal(t, vm.FaultState, aer[0].VMState)
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}
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t.Run("non-UTF8 url", func(t *testing.T) {
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doBadRequest(t, cs.Hash, "\xff", nil, "", []byte{1, 2}, gasForResponse)
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})
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t.Run("non-UTF8 filter", func(t *testing.T) {
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var f = "\xff"
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doBadRequest(t, cs.Hash, "url", &f, "", []byte{1, 2}, gasForResponse)
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})
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t.Run("not enough gas", func(t *testing.T) {
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doBadRequest(t, cs.Hash, "url", nil, "", nil, 1000)
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})
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t.Run("disallowed callback", func(t *testing.T) {
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doBadRequest(t, cs.Hash, "url", nil, "_deploy", nil, 1000_0000)
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})
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})
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}
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