forked from TrueCloudLab/neoneo-go
2773 lines
88 KiB
Go
2773 lines
88 KiB
Go
package rpcsrv
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import (
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"bytes"
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"context"
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"crypto/elliptic"
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"encoding/binary"
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"math"
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"math/big"
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"net"
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"net/http"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/google/uuid"
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"github.com/gorilla/websocket"
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"github.com/nspcc-dev/neo-go/pkg/config"
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"github.com/nspcc-dev/neo-go/pkg/config/limits"
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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"
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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"
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"github.com/nspcc-dev/neo-go/pkg/core/interop/iterator"
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"github.com/nspcc-dev/neo-go/pkg/core/mempool"
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"github.com/nspcc-dev/neo-go/pkg/core/mempoolevent"
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"github.com/nspcc-dev/neo-go/pkg/core/mpt"
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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/storage"
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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/encoding/address"
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"github.com/nspcc-dev/neo-go/pkg/io"
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"github.com/nspcc-dev/neo-go/pkg/neorpc"
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"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
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"github.com/nspcc-dev/neo-go/pkg/network"
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"github.com/nspcc-dev/neo-go/pkg/network/payload"
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"github.com/nspcc-dev/neo-go/pkg/services/oracle/broadcaster"
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"github.com/nspcc-dev/neo-go/pkg/services/rpcsrv/params"
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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/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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"go.uber.org/atomic"
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"go.uber.org/zap"
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)
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type (
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// Ledger abstracts away the Blockchain as used by the RPC server.
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Ledger interface {
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AddBlock(block *block.Block) error
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BlockHeight() uint32
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CalculateClaimable(h util.Uint160, endHeight uint32) (*big.Int, error)
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CurrentBlockHash() util.Uint256
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FeePerByte() int64
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ForEachNEP11Transfer(acc util.Uint160, newestTimestamp uint64, f func(*state.NEP11Transfer) (bool, error)) error
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ForEachNEP17Transfer(acc util.Uint160, newestTimestamp uint64, f func(*state.NEP17Transfer) (bool, error)) error
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GetAppExecResults(util.Uint256, trigger.Type) ([]state.AppExecResult, error)
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GetBaseExecFee() int64
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GetBlock(hash util.Uint256) (*block.Block, error)
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GetCommittee() (keys.PublicKeys, error)
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GetConfig() config.ProtocolConfiguration
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GetContractScriptHash(id int32) (util.Uint160, error)
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GetContractState(hash util.Uint160) *state.Contract
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GetEnrollments() ([]state.Validator, error)
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GetGoverningTokenBalance(acc util.Uint160) (*big.Int, uint32)
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GetHeader(hash util.Uint256) (*block.Header, error)
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GetHeaderHash(int) util.Uint256
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GetMaxVerificationGAS() int64
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GetMemPool() *mempool.Pool
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GetNEP11Contracts() []util.Uint160
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GetNEP17Contracts() []util.Uint160
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GetNativeContractScriptHash(string) (util.Uint160, error)
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GetNatives() []state.NativeContract
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GetNextBlockValidators() ([]*keys.PublicKey, error)
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GetNotaryContractScriptHash() util.Uint160
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GetNotaryServiceFeePerKey() int64
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GetStateModule() core.StateRoot
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GetStorageItem(id int32, key []byte) state.StorageItem
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GetTestHistoricVM(t trigger.Type, tx *transaction.Transaction, nextBlockHeight uint32) (*interop.Context, error)
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GetTestVM(t trigger.Type, tx *transaction.Transaction, b *block.Block) (*interop.Context, error)
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GetTokenLastUpdated(acc util.Uint160) (map[int32]uint32, error)
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GetTransaction(util.Uint256) (*transaction.Transaction, uint32, error)
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GetValidators() ([]*keys.PublicKey, error)
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HeaderHeight() uint32
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InitVerificationContext(ic *interop.Context, hash util.Uint160, witness *transaction.Witness) error
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SubscribeForBlocks(ch chan *block.Block)
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SubscribeForExecutions(ch chan *state.AppExecResult)
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SubscribeForNotifications(ch chan *state.ContainedNotificationEvent)
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SubscribeForTransactions(ch chan *transaction.Transaction)
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UnsubscribeFromBlocks(ch chan *block.Block)
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UnsubscribeFromExecutions(ch chan *state.AppExecResult)
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UnsubscribeFromNotifications(ch chan *state.ContainedNotificationEvent)
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UnsubscribeFromTransactions(ch chan *transaction.Transaction)
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VerifyTx(*transaction.Transaction) error
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VerifyWitness(util.Uint160, hash.Hashable, *transaction.Witness, int64) (int64, error)
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mempool.Feer // fee interface
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}
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// OracleHandler is the interface oracle service needs to provide for the Server.
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OracleHandler interface {
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AddResponse(pub *keys.PublicKey, reqID uint64, txSig []byte)
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}
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// Server represents the JSON-RPC 2.0 server.
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Server struct {
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*http.Server
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chain Ledger
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config config.RPC
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// wsReadLimit represents web-socket message limit for a receiving side.
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wsReadLimit int64
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network netmode.Magic
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stateRootEnabled bool
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coreServer *network.Server
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oracle *atomic.Value
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log *zap.Logger
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https *http.Server
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shutdown chan struct{}
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started *atomic.Bool
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errChan chan error
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sessionsLock sync.Mutex
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sessions map[string]*session
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subsLock sync.RWMutex
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subscribers map[*subscriber]bool
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blockSubs int
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executionSubs int
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notificationSubs int
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transactionSubs int
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notaryRequestSubs int
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blockCh chan *block.Block
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executionCh chan *state.AppExecResult
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notificationCh chan *state.ContainedNotificationEvent
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transactionCh chan *transaction.Transaction
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notaryRequestCh chan mempoolevent.Event
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}
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// session holds a set of iterators got after invoke* call with corresponding
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// finalizer and session expiration timer.
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session struct {
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// iteratorsLock protects iteratorIdentifiers of the current session.
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iteratorsLock sync.Mutex
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// iteratorIdentifiers stores the set of Iterator stackitems got either from original invocation
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// or from historic MPT-based invocation. In the second case, iteratorIdentifiers are supposed
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// to be filled during the first `traverseiterator` call using corresponding params.
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iteratorIdentifiers []*iteratorIdentifier
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timer *time.Timer
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finalize func()
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}
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// iteratorIdentifier represents Iterator on the server side, holding iterator ID and Iterator stackitem.
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iteratorIdentifier struct {
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ID string
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// Item represents Iterator stackitem.
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Item stackitem.Item
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}
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)
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const (
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// Disconnection timeout.
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wsPongLimit = 60 * time.Second
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// Ping period for connection liveness check.
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wsPingPeriod = wsPongLimit / 2
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// Write deadline.
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wsWriteLimit = wsPingPeriod / 2
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// Maximum number of subscribers per Server. Each websocket client is
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// treated like a subscriber, so technically it's a limit on websocket
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// connections.
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maxSubscribers = 64
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// Maximum number of elements for get*transfers requests.
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maxTransfersLimit = 1000
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// defaultSessionPoolSize is the number of concurrently running iterator sessions.
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defaultSessionPoolSize = 20
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)
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var rpcHandlers = map[string]func(*Server, params.Params) (interface{}, *neorpc.Error){
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"calculatenetworkfee": (*Server).calculateNetworkFee,
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"findstates": (*Server).findStates,
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"getapplicationlog": (*Server).getApplicationLog,
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"getbestblockhash": (*Server).getBestBlockHash,
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"getblock": (*Server).getBlock,
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"getblockcount": (*Server).getBlockCount,
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"getblockhash": (*Server).getBlockHash,
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"getblockheader": (*Server).getBlockHeader,
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"getblockheadercount": (*Server).getBlockHeaderCount,
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"getblocksysfee": (*Server).getBlockSysFee,
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"getcandidates": (*Server).getCandidates,
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"getcommittee": (*Server).getCommittee,
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"getconnectioncount": (*Server).getConnectionCount,
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"getcontractstate": (*Server).getContractState,
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"getnativecontracts": (*Server).getNativeContracts,
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"getnep11balances": (*Server).getNEP11Balances,
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"getnep11properties": (*Server).getNEP11Properties,
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"getnep11transfers": (*Server).getNEP11Transfers,
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"getnep17balances": (*Server).getNEP17Balances,
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"getnep17transfers": (*Server).getNEP17Transfers,
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"getpeers": (*Server).getPeers,
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"getproof": (*Server).getProof,
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"getrawmempool": (*Server).getRawMempool,
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"getrawtransaction": (*Server).getrawtransaction,
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"getstate": (*Server).getState,
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"getstateheight": (*Server).getStateHeight,
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"getstateroot": (*Server).getStateRoot,
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"getstorage": (*Server).getStorage,
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"gettransactionheight": (*Server).getTransactionHeight,
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"getunclaimedgas": (*Server).getUnclaimedGas,
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"getnextblockvalidators": (*Server).getNextBlockValidators,
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"getversion": (*Server).getVersion,
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"invokefunction": (*Server).invokeFunction,
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"invokefunctionhistoric": (*Server).invokeFunctionHistoric,
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"invokescript": (*Server).invokescript,
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"invokescripthistoric": (*Server).invokescripthistoric,
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"invokecontractverify": (*Server).invokeContractVerify,
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"invokecontractverifyhistoric": (*Server).invokeContractVerifyHistoric,
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"sendrawtransaction": (*Server).sendrawtransaction,
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"submitblock": (*Server).submitBlock,
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"submitnotaryrequest": (*Server).submitNotaryRequest,
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"submitoracleresponse": (*Server).submitOracleResponse,
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"terminatesession": (*Server).terminateSession,
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"traverseiterator": (*Server).traverseIterator,
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"validateaddress": (*Server).validateAddress,
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"verifyproof": (*Server).verifyProof,
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}
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var rpcWsHandlers = map[string]func(*Server, params.Params, *subscriber) (interface{}, *neorpc.Error){
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"subscribe": (*Server).subscribe,
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"unsubscribe": (*Server).unsubscribe,
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}
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var invalidBlockHeightError = func(index int, height int) *neorpc.Error {
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return neorpc.NewRPCError("Invalid block height", fmt.Sprintf("param at index %d should be greater than or equal to 0 and less then or equal to current block height, got: %d", index, height))
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}
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// upgrader is a no-op websocket.Upgrader that reuses HTTP server buffers and
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// doesn't set any Error function.
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var upgrader = websocket.Upgrader{}
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// New creates a new Server struct.
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func New(chain Ledger, conf config.RPC, coreServer *network.Server,
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orc OracleHandler, log *zap.Logger, errChan chan error) Server {
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httpServer := &http.Server{
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Addr: conf.Address + ":" + strconv.FormatUint(uint64(conf.Port), 10),
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}
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var tlsServer *http.Server
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if cfg := conf.TLSConfig; cfg.Enabled {
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tlsServer = &http.Server{
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Addr: net.JoinHostPort(cfg.Address, strconv.FormatUint(uint64(cfg.Port), 10)),
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}
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}
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protoCfg := chain.GetConfig()
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if conf.SessionEnabled {
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if conf.SessionExpirationTime <= 0 {
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conf.SessionExpirationTime = protoCfg.SecondsPerBlock
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log.Info("SessionExpirationTime is not set or wrong, setting default value", zap.Int("SessionExpirationTime", protoCfg.SecondsPerBlock))
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}
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if conf.SessionPoolSize <= 0 {
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conf.SessionPoolSize = defaultSessionPoolSize
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log.Info("SessionPoolSize is not set or wrong, setting default value", zap.Int("SessionPoolSize", defaultSessionPoolSize))
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}
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}
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var oracleWrapped = new(atomic.Value)
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if orc != nil {
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oracleWrapped.Store(&orc)
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}
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return Server{
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Server: httpServer,
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chain: chain,
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config: conf,
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wsReadLimit: int64(protoCfg.MaxBlockSize*4)/3 + 1024, // Enough for Base64-encoded content of `submitblock` and `submitp2pnotaryrequest`.
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network: protoCfg.Magic,
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stateRootEnabled: protoCfg.StateRootInHeader,
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coreServer: coreServer,
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log: log,
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oracle: oracleWrapped,
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https: tlsServer,
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shutdown: make(chan struct{}),
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started: atomic.NewBool(false),
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errChan: errChan,
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sessions: make(map[string]*session),
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subscribers: make(map[*subscriber]bool),
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// These are NOT buffered to preserve original order of events.
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blockCh: make(chan *block.Block),
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executionCh: make(chan *state.AppExecResult),
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notificationCh: make(chan *state.ContainedNotificationEvent),
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transactionCh: make(chan *transaction.Transaction),
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notaryRequestCh: make(chan mempoolevent.Event),
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}
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}
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// Name returns service name.
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func (s *Server) Name() string {
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return "rpc"
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}
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// Start creates a new JSON-RPC server listening on the configured port. It creates
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// goroutines needed internally and it returns its errors via errChan passed to New().
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// The Server only starts once, subsequent calls to Start are no-op.
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func (s *Server) Start() {
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if !s.config.Enabled {
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s.log.Info("RPC server is not enabled")
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return
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}
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if !s.started.CAS(false, true) {
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s.log.Info("RPC server already started")
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return
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}
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s.Handler = http.HandlerFunc(s.handleHTTPRequest)
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s.log.Info("starting rpc-server", zap.String("endpoint", s.Addr))
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go s.handleSubEvents()
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if cfg := s.config.TLSConfig; cfg.Enabled {
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s.https.Handler = http.HandlerFunc(s.handleHTTPRequest)
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s.log.Info("starting rpc-server (https)", zap.String("endpoint", s.https.Addr))
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go func() {
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ln, err := net.Listen("tcp", s.https.Addr)
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if err != nil {
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s.errChan <- err
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return
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}
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s.https.Addr = ln.Addr().String()
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err = s.https.ServeTLS(ln, cfg.CertFile, cfg.KeyFile)
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if !errors.Is(err, http.ErrServerClosed) {
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s.log.Error("failed to start TLS RPC server", zap.Error(err))
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s.errChan <- err
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}
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}()
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}
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ln, err := net.Listen("tcp", s.Addr)
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if err != nil {
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s.errChan <- err
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return
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}
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s.Addr = ln.Addr().String() // set Addr to the actual address
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go func() {
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err = s.Serve(ln)
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if !errors.Is(err, http.ErrServerClosed) {
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s.log.Error("failed to start RPC server", zap.Error(err))
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s.errChan <- err
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}
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}()
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}
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// Shutdown stops the RPC server if it's running. It can only be called once,
|
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// subsequent calls to Shutdown on the same instance are no-op. The instance
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// that was stopped can not be started again by calling Start (use a new
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// instance if needed).
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func (s *Server) Shutdown() {
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if !s.started.CAS(true, false) {
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return
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}
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// Signal to websocket writer routines and handleSubEvents.
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close(s.shutdown)
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if s.config.TLSConfig.Enabled {
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s.log.Info("shutting down RPC server (https)", zap.String("endpoint", s.https.Addr))
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err := s.https.Shutdown(context.Background())
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if err != nil {
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s.log.Warn("error during RPC (https) server shutdown", zap.Error(err))
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}
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}
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s.log.Info("shutting down RPC server", zap.String("endpoint", s.Addr))
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err := s.Server.Shutdown(context.Background())
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if err != nil {
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s.log.Warn("error during RPC (http) server shutdown", zap.Error(err))
|
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}
|
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|
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// Perform sessions finalisation.
|
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if s.config.SessionEnabled {
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s.sessionsLock.Lock()
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for _, session := range s.sessions {
|
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// Concurrent iterator traversal may still be in process, thus need to protect iteratorIdentifiers access.
|
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session.iteratorsLock.Lock()
|
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session.finalize()
|
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if !session.timer.Stop() {
|
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<-session.timer.C
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}
|
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session.iteratorsLock.Unlock()
|
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}
|
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s.sessions = nil
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s.sessionsLock.Unlock()
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}
|
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|
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// Wait for handleSubEvents to finish.
|
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<-s.executionCh
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}
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|
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// SetOracleHandler allows to update oracle handler used by the Server.
|
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func (s *Server) SetOracleHandler(orc OracleHandler) {
|
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s.oracle.Store(&orc)
|
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}
|
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|
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func (s *Server) handleHTTPRequest(w http.ResponseWriter, httpRequest *http.Request) {
|
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req := params.NewRequest()
|
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|
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if httpRequest.URL.Path == "/ws" && httpRequest.Method == "GET" {
|
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// Technically there is a race between this check and
|
|
// s.subscribers modification 20 lines below, but it's tiny
|
|
// and not really critical to bother with it. Some additional
|
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// clients may sneak in, no big deal.
|
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s.subsLock.RLock()
|
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numOfSubs := len(s.subscribers)
|
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s.subsLock.RUnlock()
|
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if numOfSubs >= maxSubscribers {
|
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s.writeHTTPErrorResponse(
|
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params.NewIn(),
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w,
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neorpc.NewInternalServerError("websocket users limit reached"),
|
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)
|
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return
|
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}
|
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ws, err := upgrader.Upgrade(w, httpRequest, nil)
|
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if err != nil {
|
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s.log.Info("websocket connection upgrade failed", zap.Error(err))
|
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return
|
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}
|
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resChan := make(chan abstractResult) // response.abstract or response.abstractBatch
|
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subChan := make(chan *websocket.PreparedMessage, notificationBufSize)
|
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subscr := &subscriber{writer: subChan, ws: ws}
|
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s.subsLock.Lock()
|
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s.subscribers[subscr] = true
|
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s.subsLock.Unlock()
|
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go s.handleWsWrites(ws, resChan, subChan)
|
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s.handleWsReads(ws, resChan, subscr)
|
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return
|
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}
|
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|
|
if httpRequest.Method == "OPTIONS" && s.config.EnableCORSWorkaround { // Preflight CORS.
|
|
setCORSOriginHeaders(w.Header())
|
|
w.Header().Set("Access-Control-Allow-Methods", "GET, POST") // GET for websockets.
|
|
w.Header().Set("Access-Control-Max-Age", "21600") // 6 hours.
|
|
return
|
|
}
|
|
|
|
if httpRequest.Method != "POST" {
|
|
s.writeHTTPErrorResponse(
|
|
params.NewIn(),
|
|
w,
|
|
neorpc.NewInvalidParamsError(fmt.Sprintf("invalid method '%s', please retry with 'POST'", httpRequest.Method)),
|
|
)
|
|
return
|
|
}
|
|
|
|
err := req.DecodeData(httpRequest.Body)
|
|
if err != nil {
|
|
s.writeHTTPErrorResponse(params.NewIn(), w, neorpc.NewParseError(err.Error()))
|
|
return
|
|
}
|
|
|
|
resp := s.handleRequest(req, nil)
|
|
s.writeHTTPServerResponse(req, w, resp)
|
|
}
|
|
|
|
func (s *Server) handleRequest(req *params.Request, sub *subscriber) abstractResult {
|
|
if req.In != nil {
|
|
req.In.Method = escapeForLog(req.In.Method) // No valid method name will be changed by it.
|
|
return s.handleIn(req.In, sub)
|
|
}
|
|
resp := make(abstractBatch, len(req.Batch))
|
|
for i, in := range req.Batch {
|
|
in.Method = escapeForLog(in.Method) // No valid method name will be changed by it.
|
|
resp[i] = s.handleIn(&in, sub)
|
|
}
|
|
return resp
|
|
}
|
|
|
|
func (s *Server) handleIn(req *params.In, sub *subscriber) abstract {
|
|
var res interface{}
|
|
var resErr *neorpc.Error
|
|
if req.JSONRPC != neorpc.JSONRPCVersion {
|
|
return s.packResponse(req, nil, neorpc.NewInvalidParamsError(fmt.Sprintf("problem parsing JSON: invalid version, expected 2.0 got '%s'", req.JSONRPC)))
|
|
}
|
|
|
|
reqParams := params.Params(req.RawParams)
|
|
|
|
s.log.Debug("processing rpc request",
|
|
zap.String("method", req.Method),
|
|
zap.Stringer("params", reqParams))
|
|
|
|
incCounter(req.Method)
|
|
|
|
resErr = neorpc.NewMethodNotFoundError(fmt.Sprintf("method %q not supported", req.Method))
|
|
handler, ok := rpcHandlers[req.Method]
|
|
if ok {
|
|
res, resErr = handler(s, reqParams)
|
|
} else if sub != nil {
|
|
handler, ok := rpcWsHandlers[req.Method]
|
|
if ok {
|
|
res, resErr = handler(s, reqParams, sub)
|
|
}
|
|
}
|
|
return s.packResponse(req, res, resErr)
|
|
}
|
|
|
|
func (s *Server) handleWsWrites(ws *websocket.Conn, resChan <-chan abstractResult, subChan <-chan *websocket.PreparedMessage) {
|
|
pingTicker := time.NewTicker(wsPingPeriod)
|
|
eventloop:
|
|
for {
|
|
select {
|
|
case <-s.shutdown:
|
|
break eventloop
|
|
case event, ok := <-subChan:
|
|
if !ok {
|
|
break eventloop
|
|
}
|
|
if err := ws.SetWriteDeadline(time.Now().Add(wsWriteLimit)); err != nil {
|
|
break eventloop
|
|
}
|
|
if err := ws.WritePreparedMessage(event); err != nil {
|
|
break eventloop
|
|
}
|
|
case res, ok := <-resChan:
|
|
if !ok {
|
|
break eventloop
|
|
}
|
|
if err := ws.SetWriteDeadline(time.Now().Add(wsWriteLimit)); err != nil {
|
|
break eventloop
|
|
}
|
|
if err := ws.WriteJSON(res); err != nil {
|
|
break eventloop
|
|
}
|
|
case <-pingTicker.C:
|
|
if err := ws.SetWriteDeadline(time.Now().Add(wsWriteLimit)); err != nil {
|
|
break eventloop
|
|
}
|
|
if err := ws.WriteMessage(websocket.PingMessage, []byte{}); err != nil {
|
|
break eventloop
|
|
}
|
|
}
|
|
}
|
|
ws.Close()
|
|
pingTicker.Stop()
|
|
// Drain notification channel as there might be some goroutines blocked
|
|
// on it.
|
|
drainloop:
|
|
for {
|
|
select {
|
|
case _, ok := <-subChan:
|
|
if !ok {
|
|
break drainloop
|
|
}
|
|
default:
|
|
break drainloop
|
|
}
|
|
}
|
|
}
|
|
|
|
func (s *Server) handleWsReads(ws *websocket.Conn, resChan chan<- abstractResult, subscr *subscriber) {
|
|
ws.SetReadLimit(s.wsReadLimit)
|
|
err := ws.SetReadDeadline(time.Now().Add(wsPongLimit))
|
|
ws.SetPongHandler(func(string) error { return ws.SetReadDeadline(time.Now().Add(wsPongLimit)) })
|
|
requestloop:
|
|
for err == nil {
|
|
req := params.NewRequest()
|
|
err := ws.ReadJSON(req)
|
|
if err != nil {
|
|
break
|
|
}
|
|
res := s.handleRequest(req, subscr)
|
|
res.RunForErrors(func(jsonErr *neorpc.Error) {
|
|
s.logRequestError(req, jsonErr)
|
|
})
|
|
select {
|
|
case <-s.shutdown:
|
|
break requestloop
|
|
case resChan <- res:
|
|
}
|
|
}
|
|
s.subsLock.Lock()
|
|
delete(s.subscribers, subscr)
|
|
for _, e := range subscr.feeds {
|
|
if e.event != neorpc.InvalidEventID {
|
|
s.unsubscribeFromChannel(e.event)
|
|
}
|
|
}
|
|
s.subsLock.Unlock()
|
|
close(resChan)
|
|
ws.Close()
|
|
}
|
|
|
|
func (s *Server) getBestBlockHash(_ params.Params) (interface{}, *neorpc.Error) {
|
|
return "0x" + s.chain.CurrentBlockHash().StringLE(), nil
|
|
}
|
|
|
|
func (s *Server) getBlockCount(_ params.Params) (interface{}, *neorpc.Error) {
|
|
return s.chain.BlockHeight() + 1, nil
|
|
}
|
|
|
|
func (s *Server) getBlockHeaderCount(_ params.Params) (interface{}, *neorpc.Error) {
|
|
return s.chain.HeaderHeight() + 1, nil
|
|
}
|
|
|
|
func (s *Server) getConnectionCount(_ params.Params) (interface{}, *neorpc.Error) {
|
|
return s.coreServer.PeerCount(), nil
|
|
}
|
|
|
|
func (s *Server) blockHashFromParam(param *params.Param) (util.Uint256, *neorpc.Error) {
|
|
var (
|
|
hash util.Uint256
|
|
err error
|
|
)
|
|
if param == nil {
|
|
return hash, neorpc.ErrInvalidParams
|
|
}
|
|
|
|
if hash, err = param.GetUint256(); err != nil {
|
|
num, respErr := s.blockHeightFromParam(param)
|
|
if respErr != nil {
|
|
return hash, respErr
|
|
}
|
|
hash = s.chain.GetHeaderHash(num)
|
|
}
|
|
return hash, nil
|
|
}
|
|
|
|
func (s *Server) fillBlockMetadata(obj io.Serializable, h *block.Header) result.BlockMetadata {
|
|
res := result.BlockMetadata{
|
|
Size: io.GetVarSize(obj), // obj can be a Block or a Header.
|
|
Confirmations: s.chain.BlockHeight() - h.Index + 1,
|
|
}
|
|
|
|
hash := s.chain.GetHeaderHash(int(h.Index) + 1)
|
|
if !hash.Equals(util.Uint256{}) {
|
|
res.NextBlockHash = &hash
|
|
}
|
|
return res
|
|
}
|
|
|
|
func (s *Server) getBlock(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
param := reqParams.Value(0)
|
|
hash, respErr := s.blockHashFromParam(param)
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
|
|
block, err := s.chain.GetBlock(hash)
|
|
if err != nil {
|
|
return nil, neorpc.NewRPCError("Failed to get block", err.Error())
|
|
}
|
|
|
|
if v, _ := reqParams.Value(1).GetBoolean(); v {
|
|
res := result.Block{
|
|
Block: *block,
|
|
BlockMetadata: s.fillBlockMetadata(block, &block.Header),
|
|
}
|
|
return res, nil
|
|
}
|
|
writer := io.NewBufBinWriter()
|
|
block.EncodeBinary(writer.BinWriter)
|
|
return writer.Bytes(), nil
|
|
}
|
|
|
|
func (s *Server) getBlockHash(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
num, err := s.blockHeightFromParam(reqParams.Value(0))
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
|
|
return s.chain.GetHeaderHash(num), nil
|
|
}
|
|
|
|
func (s *Server) getVersion(_ params.Params) (interface{}, *neorpc.Error) {
|
|
port, err := s.coreServer.Port()
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("cannot fetch tcp port: %s", err))
|
|
}
|
|
|
|
cfg := s.chain.GetConfig()
|
|
return &result.Version{
|
|
Magic: s.network,
|
|
TCPPort: port,
|
|
Nonce: s.coreServer.ID(),
|
|
UserAgent: s.coreServer.UserAgent,
|
|
StateRootInHeader: cfg.StateRootInHeader,
|
|
Protocol: result.Protocol{
|
|
AddressVersion: address.NEO3Prefix,
|
|
Network: cfg.Magic,
|
|
MillisecondsPerBlock: cfg.SecondsPerBlock * 1000,
|
|
MaxTraceableBlocks: cfg.MaxTraceableBlocks,
|
|
MaxValidUntilBlockIncrement: cfg.MaxValidUntilBlockIncrement,
|
|
MaxTransactionsPerBlock: cfg.MaxTransactionsPerBlock,
|
|
MemoryPoolMaxTransactions: cfg.MemPoolSize,
|
|
ValidatorsCount: byte(cfg.GetNumOfCNs(s.chain.BlockHeight())),
|
|
InitialGasDistribution: cfg.InitialGASSupply,
|
|
|
|
CommitteeHistory: cfg.CommitteeHistory,
|
|
P2PSigExtensions: cfg.P2PSigExtensions,
|
|
StateRootInHeader: cfg.StateRootInHeader,
|
|
ValidatorsHistory: cfg.ValidatorsHistory,
|
|
},
|
|
}, nil
|
|
}
|
|
|
|
func (s *Server) getPeers(_ params.Params) (interface{}, *neorpc.Error) {
|
|
peers := result.NewGetPeers()
|
|
peers.AddUnconnected(s.coreServer.UnconnectedPeers())
|
|
peers.AddConnected(s.coreServer.ConnectedPeers())
|
|
peers.AddBad(s.coreServer.BadPeers())
|
|
return peers, nil
|
|
}
|
|
|
|
func (s *Server) getRawMempool(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
verbose, _ := reqParams.Value(0).GetBoolean()
|
|
mp := s.chain.GetMemPool()
|
|
hashList := make([]util.Uint256, 0)
|
|
for _, item := range mp.GetVerifiedTransactions() {
|
|
hashList = append(hashList, item.Hash())
|
|
}
|
|
if !verbose {
|
|
return hashList, nil
|
|
}
|
|
return result.RawMempool{
|
|
Height: s.chain.BlockHeight(),
|
|
Verified: hashList,
|
|
Unverified: []util.Uint256{}, // avoid `null` result
|
|
}, nil
|
|
}
|
|
|
|
func (s *Server) validateAddress(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
param, err := reqParams.Value(0).GetString()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
|
|
return result.ValidateAddress{
|
|
Address: reqParams.Value(0),
|
|
IsValid: validateAddress(param),
|
|
}, nil
|
|
}
|
|
|
|
// calculateNetworkFee calculates network fee for the transaction.
|
|
func (s *Server) calculateNetworkFee(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
if len(reqParams) < 1 {
|
|
return 0, neorpc.ErrInvalidParams
|
|
}
|
|
byteTx, err := reqParams[0].GetBytesBase64()
|
|
if err != nil {
|
|
return 0, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, err.Error())
|
|
}
|
|
tx, err := transaction.NewTransactionFromBytes(byteTx)
|
|
if err != nil {
|
|
return 0, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, err.Error())
|
|
}
|
|
hashablePart, err := tx.EncodeHashableFields()
|
|
if err != nil {
|
|
return 0, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, fmt.Sprintf("failed to compute tx size: %s", err))
|
|
}
|
|
size := len(hashablePart) + io.GetVarSize(len(tx.Signers))
|
|
var netFee int64
|
|
for i, signer := range tx.Signers {
|
|
w := tx.Scripts[i]
|
|
if len(w.InvocationScript) == 0 { // No invocation provided, try to infer one.
|
|
var paramz []manifest.Parameter
|
|
if len(w.VerificationScript) == 0 { // Contract-based verification
|
|
cs := s.chain.GetContractState(signer.Account)
|
|
if cs == nil {
|
|
return 0, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, fmt.Sprintf("signer %d has no verification script and no deployed contract", i))
|
|
}
|
|
md := cs.Manifest.ABI.GetMethod(manifest.MethodVerify, -1)
|
|
if md == nil || md.ReturnType != smartcontract.BoolType {
|
|
return 0, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, fmt.Sprintf("signer %d has no verify method in deployed contract", i))
|
|
}
|
|
paramz = md.Parameters // Might as well have none params and it's OK.
|
|
} else { // Regular signature verification.
|
|
if vm.IsSignatureContract(w.VerificationScript) {
|
|
paramz = []manifest.Parameter{{Type: smartcontract.SignatureType}}
|
|
} else if nSigs, _, ok := vm.ParseMultiSigContract(w.VerificationScript); ok {
|
|
paramz = make([]manifest.Parameter, nSigs)
|
|
for j := 0; j < nSigs; j++ {
|
|
paramz[j] = manifest.Parameter{Type: smartcontract.SignatureType}
|
|
}
|
|
}
|
|
}
|
|
inv := io.NewBufBinWriter()
|
|
for _, p := range paramz {
|
|
p.Type.EncodeDefaultValue(inv.BinWriter)
|
|
}
|
|
if inv.Err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("failed to create dummy invocation script (signer %d): %s", i, inv.Err.Error()))
|
|
}
|
|
w.InvocationScript = inv.Bytes()
|
|
}
|
|
gasConsumed, _ := s.chain.VerifyWitness(signer.Account, tx, &w, int64(s.config.MaxGasInvoke))
|
|
netFee += gasConsumed
|
|
size += io.GetVarSize(w.VerificationScript) + io.GetVarSize(w.InvocationScript)
|
|
}
|
|
if s.chain.P2PSigExtensionsEnabled() {
|
|
attrs := tx.GetAttributes(transaction.NotaryAssistedT)
|
|
if len(attrs) != 0 {
|
|
na := attrs[0].Value.(*transaction.NotaryAssisted)
|
|
netFee += (int64(na.NKeys) + 1) * s.chain.GetNotaryServiceFeePerKey()
|
|
}
|
|
}
|
|
fee := s.chain.FeePerByte()
|
|
netFee += int64(size) * fee
|
|
return result.NetworkFee{Value: netFee}, nil
|
|
}
|
|
|
|
// getApplicationLog returns the contract log based on the specified txid or blockid.
|
|
func (s *Server) getApplicationLog(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
hash, err := reqParams.Value(0).GetUint256()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
|
|
trig := trigger.All
|
|
if len(reqParams) > 1 {
|
|
trigString, err := reqParams.Value(1).GetString()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
trig, err = trigger.FromString(trigString)
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
}
|
|
|
|
appExecResults, err := s.chain.GetAppExecResults(hash, trigger.All)
|
|
if err != nil {
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrUnknownScriptContainer, fmt.Sprintf("failed to locate application log: %s", err))
|
|
}
|
|
return result.NewApplicationLog(hash, appExecResults, trig), nil
|
|
}
|
|
|
|
func (s *Server) getNEP11Tokens(h util.Uint160, acc util.Uint160, bw *io.BufBinWriter) ([]stackitem.Item, string, int, error) {
|
|
items, finalize, err := s.invokeReadOnlyMulti(bw, h, []string{"tokensOf", "symbol", "decimals"}, [][]interface{}{{acc}, nil, nil})
|
|
if err != nil {
|
|
return nil, "", 0, err
|
|
}
|
|
defer finalize()
|
|
if (items[0].Type() != stackitem.InteropT) || !iterator.IsIterator(items[0]) {
|
|
return nil, "", 0, fmt.Errorf("invalid `tokensOf` result type %s", items[0].String())
|
|
}
|
|
vals := iterator.Values(items[0], s.config.MaxNEP11Tokens)
|
|
sym, err := stackitem.ToString(items[1])
|
|
if err != nil {
|
|
return nil, "", 0, fmt.Errorf("`symbol` return value error: %w", err)
|
|
}
|
|
dec, err := items[2].TryInteger()
|
|
if err != nil {
|
|
return nil, "", 0, fmt.Errorf("`decimals` return value error: %w", err)
|
|
}
|
|
if !dec.IsInt64() || dec.Sign() == -1 || dec.Int64() > math.MaxInt32 {
|
|
return nil, "", 0, errors.New("`decimals` returned a bad integer")
|
|
}
|
|
return vals, sym, int(dec.Int64()), nil
|
|
}
|
|
|
|
func (s *Server) getNEP11Balances(ps params.Params) (interface{}, *neorpc.Error) {
|
|
u, err := ps.Value(0).GetUint160FromAddressOrHex()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
|
|
bs := &result.NEP11Balances{
|
|
Address: address.Uint160ToString(u),
|
|
Balances: []result.NEP11AssetBalance{},
|
|
}
|
|
lastUpdated, err := s.chain.GetTokenLastUpdated(u)
|
|
if err != nil {
|
|
return nil, neorpc.NewRPCError("Failed to get NEP-11 last updated block", err.Error())
|
|
}
|
|
var count int
|
|
stateSyncPoint := lastUpdated[math.MinInt32]
|
|
bw := io.NewBufBinWriter()
|
|
contract_loop:
|
|
for _, h := range s.chain.GetNEP11Contracts() {
|
|
toks, sym, dec, err := s.getNEP11Tokens(h, u, bw)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
if len(toks) == 0 {
|
|
continue
|
|
}
|
|
cs := s.chain.GetContractState(h)
|
|
if cs == nil {
|
|
continue
|
|
}
|
|
isDivisible := (cs.Manifest.ABI.GetMethod("balanceOf", 2) != nil)
|
|
lub, ok := lastUpdated[cs.ID]
|
|
if !ok {
|
|
cfg := s.chain.GetConfig()
|
|
if !cfg.P2PStateExchangeExtensions && cfg.RemoveUntraceableBlocks {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("failed to get LastUpdatedBlock for balance of %s token: internal database inconsistency", cs.Hash.StringLE()))
|
|
}
|
|
lub = stateSyncPoint
|
|
}
|
|
bs.Balances = append(bs.Balances, result.NEP11AssetBalance{
|
|
Asset: h,
|
|
Decimals: dec,
|
|
Name: cs.Manifest.Name,
|
|
Symbol: sym,
|
|
Tokens: make([]result.NEP11TokenBalance, 0, len(toks)),
|
|
})
|
|
curAsset := &bs.Balances[len(bs.Balances)-1]
|
|
for i := range toks {
|
|
id, err := toks[i].TryBytes()
|
|
if err != nil || len(id) > limits.MaxStorageKeyLen {
|
|
continue
|
|
}
|
|
var amount = "1"
|
|
if isDivisible {
|
|
balance, err := s.getNEP11DTokenBalance(h, u, id, bw)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
if balance.Sign() == 0 {
|
|
continue
|
|
}
|
|
amount = balance.String()
|
|
}
|
|
count++
|
|
curAsset.Tokens = append(curAsset.Tokens, result.NEP11TokenBalance{
|
|
ID: hex.EncodeToString(id),
|
|
Amount: amount,
|
|
LastUpdated: lub,
|
|
})
|
|
if count >= s.config.MaxNEP11Tokens {
|
|
break contract_loop
|
|
}
|
|
}
|
|
}
|
|
return bs, nil
|
|
}
|
|
|
|
func (s *Server) invokeNEP11Properties(h util.Uint160, id []byte, bw *io.BufBinWriter) ([]stackitem.MapElement, error) {
|
|
item, finalize, err := s.invokeReadOnly(bw, h, "properties", id)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer finalize()
|
|
if item.Type() != stackitem.MapT {
|
|
return nil, fmt.Errorf("invalid `properties` result type %s", item.String())
|
|
}
|
|
return item.Value().([]stackitem.MapElement), nil
|
|
}
|
|
|
|
func (s *Server) getNEP11Properties(ps params.Params) (interface{}, *neorpc.Error) {
|
|
asset, err := ps.Value(0).GetUint160FromAddressOrHex()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
token, err := ps.Value(1).GetBytesHex()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
props, err := s.invokeNEP11Properties(asset, token, nil)
|
|
if err != nil {
|
|
return nil, neorpc.NewRPCError("Failed to get NEP-11 properties", err.Error())
|
|
}
|
|
res := make(map[string]interface{})
|
|
for _, kv := range props {
|
|
key, err := kv.Key.TryBytes()
|
|
if err != nil {
|
|
continue
|
|
}
|
|
var val interface{}
|
|
if result.KnownNEP11Properties[string(key)] || kv.Value.Type() != stackitem.AnyT {
|
|
v, err := kv.Value.TryBytes()
|
|
if err != nil {
|
|
continue
|
|
}
|
|
if result.KnownNEP11Properties[string(key)] {
|
|
val = string(v)
|
|
} else {
|
|
val = v
|
|
}
|
|
}
|
|
res[string(key)] = val
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
func (s *Server) getNEP17Balances(ps params.Params) (interface{}, *neorpc.Error) {
|
|
u, err := ps.Value(0).GetUint160FromAddressOrHex()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
|
|
bs := &result.NEP17Balances{
|
|
Address: address.Uint160ToString(u),
|
|
Balances: []result.NEP17Balance{},
|
|
}
|
|
lastUpdated, err := s.chain.GetTokenLastUpdated(u)
|
|
if err != nil {
|
|
return nil, neorpc.NewRPCError("Failed to get NEP-17 last updated block", err.Error())
|
|
}
|
|
stateSyncPoint := lastUpdated[math.MinInt32]
|
|
bw := io.NewBufBinWriter()
|
|
for _, h := range s.chain.GetNEP17Contracts() {
|
|
balance, sym, dec, err := s.getNEP17TokenBalance(h, u, bw)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
if balance.Sign() == 0 {
|
|
continue
|
|
}
|
|
cs := s.chain.GetContractState(h)
|
|
if cs == nil {
|
|
continue
|
|
}
|
|
lub, ok := lastUpdated[cs.ID]
|
|
if !ok {
|
|
cfg := s.chain.GetConfig()
|
|
if !cfg.P2PStateExchangeExtensions && cfg.RemoveUntraceableBlocks {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("failed to get LastUpdatedBlock for balance of %s token: internal database inconsistency", cs.Hash.StringLE()))
|
|
}
|
|
lub = stateSyncPoint
|
|
}
|
|
bs.Balances = append(bs.Balances, result.NEP17Balance{
|
|
Asset: h,
|
|
Amount: balance.String(),
|
|
Decimals: dec,
|
|
LastUpdated: lub,
|
|
Name: cs.Manifest.Name,
|
|
Symbol: sym,
|
|
})
|
|
}
|
|
return bs, nil
|
|
}
|
|
|
|
func (s *Server) invokeReadOnly(bw *io.BufBinWriter, h util.Uint160, method string, params ...interface{}) (stackitem.Item, func(), error) {
|
|
r, f, err := s.invokeReadOnlyMulti(bw, h, []string{method}, [][]interface{}{params})
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
return r[0], f, nil
|
|
}
|
|
|
|
func (s *Server) invokeReadOnlyMulti(bw *io.BufBinWriter, h util.Uint160, methods []string, params [][]interface{}) ([]stackitem.Item, func(), error) {
|
|
if bw == nil {
|
|
bw = io.NewBufBinWriter()
|
|
} else {
|
|
bw.Reset()
|
|
}
|
|
if len(methods) != len(params) {
|
|
return nil, nil, fmt.Errorf("asymmetric parameters")
|
|
}
|
|
for i := range methods {
|
|
emit.AppCall(bw.BinWriter, h, methods[i], callflag.ReadStates|callflag.AllowCall, params[i]...)
|
|
if bw.Err != nil {
|
|
return nil, nil, fmt.Errorf("failed to create `%s` invocation script: %w", methods[i], bw.Err)
|
|
}
|
|
}
|
|
script := bw.Bytes()
|
|
tx := &transaction.Transaction{Script: script}
|
|
ic, err := s.chain.GetTestVM(trigger.Application, tx, nil)
|
|
if err != nil {
|
|
return nil, nil, fmt.Errorf("faile to prepare test VM: %w", err)
|
|
}
|
|
ic.VM.GasLimit = core.HeaderVerificationGasLimit
|
|
ic.VM.LoadScriptWithFlags(script, callflag.All)
|
|
err = ic.VM.Run()
|
|
if err != nil {
|
|
ic.Finalize()
|
|
return nil, nil, fmt.Errorf("failed to run %d methods of %s: %w", len(methods), h.StringLE(), err)
|
|
}
|
|
estack := ic.VM.Estack()
|
|
if estack.Len() != len(methods) {
|
|
ic.Finalize()
|
|
return nil, nil, fmt.Errorf("invalid return values count: expected %d, got %d", len(methods), estack.Len())
|
|
}
|
|
return estack.ToArray(), ic.Finalize, nil
|
|
}
|
|
|
|
func (s *Server) getNEP17TokenBalance(h util.Uint160, acc util.Uint160, bw *io.BufBinWriter) (*big.Int, string, int, error) {
|
|
items, finalize, err := s.invokeReadOnlyMulti(bw, h, []string{"balanceOf", "symbol", "decimals"}, [][]interface{}{{acc}, nil, nil})
|
|
if err != nil {
|
|
return nil, "", 0, err
|
|
}
|
|
finalize()
|
|
res, err := items[0].TryInteger()
|
|
if err != nil {
|
|
return nil, "", 0, fmt.Errorf("unexpected `balanceOf` result type: %w", err)
|
|
}
|
|
sym, err := stackitem.ToString(items[1])
|
|
if err != nil {
|
|
return nil, "", 0, fmt.Errorf("`symbol` return value error: %w", err)
|
|
}
|
|
dec, err := items[2].TryInteger()
|
|
if err != nil {
|
|
return nil, "", 0, fmt.Errorf("`decimals` return value error: %w", err)
|
|
}
|
|
if !dec.IsInt64() || dec.Sign() == -1 || dec.Int64() > math.MaxInt32 {
|
|
return nil, "", 0, errors.New("`decimals` returned a bad integer")
|
|
}
|
|
return res, sym, int(dec.Int64()), nil
|
|
}
|
|
|
|
func (s *Server) getNEP11DTokenBalance(h util.Uint160, acc util.Uint160, id []byte, bw *io.BufBinWriter) (*big.Int, error) {
|
|
item, finalize, err := s.invokeReadOnly(bw, h, "balanceOf", acc, id)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
finalize()
|
|
res, err := item.TryInteger()
|
|
if err != nil {
|
|
return nil, fmt.Errorf("unexpected `balanceOf` result type: %w", err)
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
func getTimestampsAndLimit(ps params.Params, index int) (uint64, uint64, int, int, error) {
|
|
var start, end uint64
|
|
var limit, page int
|
|
|
|
limit = maxTransfersLimit
|
|
pStart, pEnd, pLimit, pPage := ps.Value(index), ps.Value(index+1), ps.Value(index+2), ps.Value(index+3)
|
|
if pPage != nil {
|
|
p, err := pPage.GetInt()
|
|
if err != nil {
|
|
return 0, 0, 0, 0, err
|
|
}
|
|
if p < 0 {
|
|
return 0, 0, 0, 0, errors.New("can't use negative page")
|
|
}
|
|
page = p
|
|
}
|
|
if pLimit != nil {
|
|
l, err := pLimit.GetInt()
|
|
if err != nil {
|
|
return 0, 0, 0, 0, err
|
|
}
|
|
if l <= 0 {
|
|
return 0, 0, 0, 0, errors.New("can't use negative or zero limit")
|
|
}
|
|
if l > maxTransfersLimit {
|
|
return 0, 0, 0, 0, errors.New("too big limit requested")
|
|
}
|
|
limit = l
|
|
}
|
|
if pEnd != nil {
|
|
val, err := pEnd.GetInt()
|
|
if err != nil {
|
|
return 0, 0, 0, 0, err
|
|
}
|
|
end = uint64(val)
|
|
} else {
|
|
end = uint64(time.Now().Unix() * 1000)
|
|
}
|
|
if pStart != nil {
|
|
val, err := pStart.GetInt()
|
|
if err != nil {
|
|
return 0, 0, 0, 0, err
|
|
}
|
|
start = uint64(val)
|
|
} else {
|
|
start = uint64(time.Now().Add(-time.Hour*24*7).Unix() * 1000)
|
|
}
|
|
return start, end, limit, page, nil
|
|
}
|
|
|
|
func (s *Server) getNEP11Transfers(ps params.Params) (interface{}, *neorpc.Error) {
|
|
return s.getTokenTransfers(ps, true)
|
|
}
|
|
|
|
func (s *Server) getNEP17Transfers(ps params.Params) (interface{}, *neorpc.Error) {
|
|
return s.getTokenTransfers(ps, false)
|
|
}
|
|
|
|
func (s *Server) getTokenTransfers(ps params.Params, isNEP11 bool) (interface{}, *neorpc.Error) {
|
|
u, err := ps.Value(0).GetUint160FromAddressOrHex()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
|
|
start, end, limit, page, err := getTimestampsAndLimit(ps, 1)
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("malformed timestamps/limit: %s", err))
|
|
}
|
|
|
|
bs := &tokenTransfers{
|
|
Address: address.Uint160ToString(u),
|
|
Received: []interface{}{},
|
|
Sent: []interface{}{},
|
|
}
|
|
cache := make(map[int32]util.Uint160)
|
|
var resCount, frameCount int
|
|
// handleTransfer returns items to be added into the received and sent arrays
|
|
// along with a continue flag and error.
|
|
var handleTransfer = func(tr *state.NEP17Transfer) (*result.NEP17Transfer, *result.NEP17Transfer, bool, error) {
|
|
var received, sent *result.NEP17Transfer
|
|
|
|
// Iterating from the newest to the oldest, not yet reached required
|
|
// time frame, continue looping.
|
|
if tr.Timestamp > end {
|
|
return nil, nil, true, nil
|
|
}
|
|
// Iterating from the newest to the oldest, moved past required
|
|
// time frame, stop looping.
|
|
if tr.Timestamp < start {
|
|
return nil, nil, false, nil
|
|
}
|
|
frameCount++
|
|
// Using limits, not yet reached required page.
|
|
if limit != 0 && page*limit >= frameCount {
|
|
return nil, nil, true, nil
|
|
}
|
|
|
|
h, err := s.getHash(tr.Asset, cache)
|
|
if err != nil {
|
|
return nil, nil, false, err
|
|
}
|
|
|
|
transfer := result.NEP17Transfer{
|
|
Timestamp: tr.Timestamp,
|
|
Asset: h,
|
|
Index: tr.Block,
|
|
TxHash: tr.Tx,
|
|
}
|
|
if tr.Amount.Sign() > 0 { // token was received
|
|
transfer.Amount = tr.Amount.String()
|
|
if !tr.From.Equals(util.Uint160{}) {
|
|
transfer.Address = address.Uint160ToString(tr.From)
|
|
}
|
|
received = &result.NEP17Transfer{}
|
|
*received = transfer // Make a copy, transfer is to be modified below.
|
|
} else {
|
|
transfer.Amount = new(big.Int).Neg(&tr.Amount).String()
|
|
if !tr.To.Equals(util.Uint160{}) {
|
|
transfer.Address = address.Uint160ToString(tr.To)
|
|
}
|
|
sent = &result.NEP17Transfer{}
|
|
*sent = transfer
|
|
}
|
|
|
|
resCount++
|
|
// Check limits for continue flag.
|
|
return received, sent, !(limit != 0 && resCount >= limit), nil
|
|
}
|
|
if !isNEP11 {
|
|
err = s.chain.ForEachNEP17Transfer(u, end, func(tr *state.NEP17Transfer) (bool, error) {
|
|
r, s, res, err := handleTransfer(tr)
|
|
if err == nil {
|
|
if r != nil {
|
|
bs.Received = append(bs.Received, r)
|
|
}
|
|
if s != nil {
|
|
bs.Sent = append(bs.Sent, s)
|
|
}
|
|
}
|
|
return res, err
|
|
})
|
|
} else {
|
|
err = s.chain.ForEachNEP11Transfer(u, end, func(tr *state.NEP11Transfer) (bool, error) {
|
|
r, s, res, err := handleTransfer(&tr.NEP17Transfer)
|
|
if err == nil {
|
|
id := hex.EncodeToString(tr.ID)
|
|
if r != nil {
|
|
bs.Received = append(bs.Received, nep17TransferToNEP11(r, id))
|
|
}
|
|
if s != nil {
|
|
bs.Sent = append(bs.Sent, nep17TransferToNEP11(s, id))
|
|
}
|
|
}
|
|
return res, err
|
|
})
|
|
}
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("invalid transfer log: %s", err))
|
|
}
|
|
return bs, nil
|
|
}
|
|
|
|
// getHash returns the hash of the contract by its ID using cache.
|
|
func (s *Server) getHash(contractID int32, cache map[int32]util.Uint160) (util.Uint160, error) {
|
|
if d, ok := cache[contractID]; ok {
|
|
return d, nil
|
|
}
|
|
h, err := s.chain.GetContractScriptHash(contractID)
|
|
if err != nil {
|
|
return util.Uint160{}, err
|
|
}
|
|
cache[contractID] = h
|
|
return h, nil
|
|
}
|
|
|
|
func (s *Server) contractIDFromParam(param *params.Param) (int32, *neorpc.Error) {
|
|
var result int32
|
|
if param == nil {
|
|
return 0, neorpc.ErrInvalidParams
|
|
}
|
|
if scriptHash, err := param.GetUint160FromHex(); err == nil {
|
|
cs := s.chain.GetContractState(scriptHash)
|
|
if cs == nil {
|
|
return 0, neorpc.ErrUnknown
|
|
}
|
|
result = cs.ID
|
|
} else {
|
|
id, err := param.GetInt()
|
|
if err != nil {
|
|
return 0, neorpc.ErrInvalidParams
|
|
}
|
|
if err := checkInt32(id); err != nil {
|
|
return 0, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, err.Error())
|
|
}
|
|
result = int32(id)
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
// getContractScriptHashFromParam returns the contract script hash by hex contract hash, address, id or native contract name.
|
|
func (s *Server) contractScriptHashFromParam(param *params.Param) (util.Uint160, *neorpc.Error) {
|
|
var result util.Uint160
|
|
if param == nil {
|
|
return result, neorpc.ErrInvalidParams
|
|
}
|
|
nameOrHashOrIndex, err := param.GetString()
|
|
if err != nil {
|
|
return result, neorpc.ErrInvalidParams
|
|
}
|
|
result, err = param.GetUint160FromAddressOrHex()
|
|
if err == nil {
|
|
return result, nil
|
|
}
|
|
result, err = s.chain.GetNativeContractScriptHash(nameOrHashOrIndex)
|
|
if err == nil {
|
|
return result, nil
|
|
}
|
|
id, err := strconv.Atoi(nameOrHashOrIndex)
|
|
if err != nil {
|
|
return result, neorpc.NewRPCError("Invalid contract identifier (name/hash/index is expected)", err.Error())
|
|
}
|
|
if err := checkInt32(id); err != nil {
|
|
return result, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, err.Error())
|
|
}
|
|
result, err = s.chain.GetContractScriptHash(int32(id))
|
|
if err != nil {
|
|
return result, neorpc.NewRPCError("Unknown contract", "")
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func makeStorageKey(id int32, key []byte) []byte {
|
|
skey := make([]byte, 4+len(key))
|
|
binary.LittleEndian.PutUint32(skey, uint32(id))
|
|
copy(skey[4:], key)
|
|
return skey
|
|
}
|
|
|
|
var errKeepOnlyLatestState = errors.New("'KeepOnlyLatestState' setting is enabled")
|
|
|
|
func (s *Server) getProof(ps params.Params) (interface{}, *neorpc.Error) {
|
|
if s.chain.GetConfig().KeepOnlyLatestState {
|
|
return nil, neorpc.NewInvalidRequestError(fmt.Sprintf("'getproof' is not supported: %s", errKeepOnlyLatestState))
|
|
}
|
|
root, err := ps.Value(0).GetUint256()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
sc, err := ps.Value(1).GetUint160FromHex()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
key, err := ps.Value(2).GetBytesBase64()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
cs, respErr := s.getHistoricalContractState(root, sc)
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
skey := makeStorageKey(cs.ID, key)
|
|
proof, err := s.chain.GetStateModule().GetStateProof(root, skey)
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("failed to get proof: %s", err))
|
|
}
|
|
return &result.ProofWithKey{
|
|
Key: skey,
|
|
Proof: proof,
|
|
}, nil
|
|
}
|
|
|
|
func (s *Server) verifyProof(ps params.Params) (interface{}, *neorpc.Error) {
|
|
if s.chain.GetConfig().KeepOnlyLatestState {
|
|
return nil, neorpc.NewInvalidRequestError(fmt.Sprintf("'verifyproof' is not supported: %s", errKeepOnlyLatestState))
|
|
}
|
|
root, err := ps.Value(0).GetUint256()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
proofStr, err := ps.Value(1).GetString()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
var p result.ProofWithKey
|
|
if err := p.FromString(proofStr); err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
vp := new(result.VerifyProof)
|
|
val, ok := mpt.VerifyProof(root, p.Key, p.Proof)
|
|
if ok {
|
|
vp.Value = val
|
|
}
|
|
return vp, nil
|
|
}
|
|
|
|
func (s *Server) getState(ps params.Params) (interface{}, *neorpc.Error) {
|
|
root, err := ps.Value(0).GetUint256()
|
|
if err != nil {
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, "invalid stateroot")
|
|
}
|
|
if s.chain.GetConfig().KeepOnlyLatestState {
|
|
curr, err := s.chain.GetStateModule().GetStateRoot(s.chain.BlockHeight())
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("failed to get current stateroot: %s", err))
|
|
}
|
|
if !curr.Root.Equals(root) {
|
|
return nil, neorpc.NewInvalidRequestError(fmt.Sprintf("'getstate' is not supported for old states: %s", errKeepOnlyLatestState))
|
|
}
|
|
}
|
|
csHash, err := ps.Value(1).GetUint160FromHex()
|
|
if err != nil {
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, "invalid contract hash")
|
|
}
|
|
key, err := ps.Value(2).GetBytesBase64()
|
|
if err != nil {
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, "invalid key")
|
|
}
|
|
cs, respErr := s.getHistoricalContractState(root, csHash)
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
sKey := makeStorageKey(cs.ID, key)
|
|
res, err := s.chain.GetStateModule().GetState(root, sKey)
|
|
if err != nil {
|
|
return nil, neorpc.NewRPCError("Failed to get historical item state", err.Error())
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
func (s *Server) findStates(ps params.Params) (interface{}, *neorpc.Error) {
|
|
root, err := ps.Value(0).GetUint256()
|
|
if err != nil {
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, "invalid stateroot")
|
|
}
|
|
if s.chain.GetConfig().KeepOnlyLatestState {
|
|
curr, err := s.chain.GetStateModule().GetStateRoot(s.chain.BlockHeight())
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("failed to get current stateroot: %s", err))
|
|
}
|
|
if !curr.Root.Equals(root) {
|
|
return nil, neorpc.NewInvalidRequestError(fmt.Sprintf("'findstates' is not supported for old states: %s", errKeepOnlyLatestState))
|
|
}
|
|
}
|
|
csHash, err := ps.Value(1).GetUint160FromHex()
|
|
if err != nil {
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, fmt.Sprintf("invalid contract hash: %s", err))
|
|
}
|
|
prefix, err := ps.Value(2).GetBytesBase64()
|
|
if err != nil {
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, fmt.Sprintf("invalid prefix: %s", err))
|
|
}
|
|
var (
|
|
key []byte
|
|
count = s.config.MaxFindResultItems
|
|
)
|
|
if len(ps) > 3 {
|
|
key, err = ps.Value(3).GetBytesBase64()
|
|
if err != nil {
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, fmt.Sprintf("invalid key: %s", err))
|
|
}
|
|
if len(key) > 0 {
|
|
if !bytes.HasPrefix(key, prefix) {
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, "key doesn't match prefix")
|
|
}
|
|
key = key[len(prefix):]
|
|
} else {
|
|
// empty ("") key shouldn't exclude item matching prefix from the result
|
|
key = nil
|
|
}
|
|
}
|
|
if len(ps) > 4 {
|
|
count, err = ps.Value(4).GetInt()
|
|
if err != nil {
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, fmt.Sprintf("invalid count: %s", err))
|
|
}
|
|
if count > s.config.MaxFindResultItems {
|
|
count = s.config.MaxFindResultItems
|
|
}
|
|
}
|
|
cs, respErr := s.getHistoricalContractState(root, csHash)
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
pKey := makeStorageKey(cs.ID, prefix)
|
|
kvs, err := s.chain.GetStateModule().FindStates(root, pKey, key, count+1) // +1 to define result truncation
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("failed to find historical items: %s", err))
|
|
}
|
|
res := result.FindStates{}
|
|
if len(kvs) == count+1 {
|
|
res.Truncated = true
|
|
kvs = kvs[:len(kvs)-1]
|
|
}
|
|
if len(kvs) > 0 {
|
|
proof, err := s.chain.GetStateModule().GetStateProof(root, kvs[0].Key)
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("failed to get first proof: %s", err))
|
|
}
|
|
res.FirstProof = &result.ProofWithKey{
|
|
Key: kvs[0].Key,
|
|
Proof: proof,
|
|
}
|
|
}
|
|
if len(kvs) > 1 {
|
|
proof, err := s.chain.GetStateModule().GetStateProof(root, kvs[len(kvs)-1].Key)
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("failed to get last proof: %s", err))
|
|
}
|
|
res.LastProof = &result.ProofWithKey{
|
|
Key: kvs[len(kvs)-1].Key,
|
|
Proof: proof,
|
|
}
|
|
}
|
|
res.Results = make([]result.KeyValue, len(kvs))
|
|
for i, kv := range kvs {
|
|
res.Results[i] = result.KeyValue{
|
|
Key: kv.Key[4:], // cut contract ID as it is done in C#
|
|
Value: kv.Value,
|
|
}
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
func (s *Server) getHistoricalContractState(root util.Uint256, csHash util.Uint160) (*state.Contract, *neorpc.Error) {
|
|
csKey := makeStorageKey(native.ManagementContractID, native.MakeContractKey(csHash))
|
|
csBytes, err := s.chain.GetStateModule().GetState(root, csKey)
|
|
if err != nil {
|
|
return nil, neorpc.NewRPCError("Failed to get historical contract state", err.Error())
|
|
}
|
|
contract := new(state.Contract)
|
|
err = stackitem.DeserializeConvertible(csBytes, contract)
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("failed to deserialize historical contract state: %s", err))
|
|
}
|
|
return contract, nil
|
|
}
|
|
|
|
func (s *Server) getStateHeight(_ params.Params) (interface{}, *neorpc.Error) {
|
|
var height = s.chain.BlockHeight()
|
|
var stateHeight = s.chain.GetStateModule().CurrentValidatedHeight()
|
|
if s.chain.GetConfig().StateRootInHeader {
|
|
stateHeight = height - 1
|
|
}
|
|
return &result.StateHeight{
|
|
Local: height,
|
|
Validated: stateHeight,
|
|
}, nil
|
|
}
|
|
|
|
func (s *Server) getStateRoot(ps params.Params) (interface{}, *neorpc.Error) {
|
|
p := ps.Value(0)
|
|
if p == nil {
|
|
return nil, neorpc.NewInvalidParamsError("missing stateroot identifier")
|
|
}
|
|
var rt *state.MPTRoot
|
|
var h util.Uint256
|
|
height, err := p.GetIntStrict()
|
|
if err == nil {
|
|
if err := checkUint32(height); err != nil {
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, err.Error())
|
|
}
|
|
rt, err = s.chain.GetStateModule().GetStateRoot(uint32(height))
|
|
} else if h, err = p.GetUint256(); err == nil {
|
|
var hdr *block.Header
|
|
hdr, err = s.chain.GetHeader(h)
|
|
if err == nil {
|
|
rt, err = s.chain.GetStateModule().GetStateRoot(hdr.Index)
|
|
}
|
|
}
|
|
if err != nil {
|
|
return nil, neorpc.ErrUnknownStateRoot
|
|
}
|
|
return rt, nil
|
|
}
|
|
|
|
func (s *Server) getStorage(ps params.Params) (interface{}, *neorpc.Error) {
|
|
id, rErr := s.contractIDFromParam(ps.Value(0))
|
|
if rErr == neorpc.ErrUnknown {
|
|
return nil, nil
|
|
}
|
|
if rErr != nil {
|
|
return nil, rErr
|
|
}
|
|
|
|
key, err := ps.Value(1).GetBytesBase64()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
|
|
item := s.chain.GetStorageItem(id, key)
|
|
if item == nil {
|
|
return "", nil
|
|
}
|
|
|
|
return []byte(item), nil
|
|
}
|
|
|
|
func (s *Server) getrawtransaction(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
txHash, err := reqParams.Value(0).GetUint256()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
tx, height, err := s.chain.GetTransaction(txHash)
|
|
if err != nil {
|
|
return nil, neorpc.ErrUnknownTransaction
|
|
}
|
|
if v, _ := reqParams.Value(1).GetBoolean(); v {
|
|
res := result.TransactionOutputRaw{
|
|
Transaction: *tx,
|
|
}
|
|
if height == math.MaxUint32 { // Mempooled transaction.
|
|
return res, nil
|
|
}
|
|
_header := s.chain.GetHeaderHash(int(height))
|
|
header, err := s.chain.GetHeader(_header)
|
|
if err != nil {
|
|
return nil, neorpc.NewRPCError("Failed to get header for the transaction", err.Error())
|
|
}
|
|
aers, err := s.chain.GetAppExecResults(txHash, trigger.Application)
|
|
if err != nil {
|
|
return nil, neorpc.NewRPCError("Failed to get application log for the transaction", err.Error())
|
|
}
|
|
if len(aers) == 0 {
|
|
return nil, neorpc.NewRPCError("Inconsistent application log", "application log for the transaction is empty")
|
|
}
|
|
res.TransactionMetadata = result.TransactionMetadata{
|
|
Blockhash: header.Hash(),
|
|
Confirmations: int(s.chain.BlockHeight() - header.Index + 1),
|
|
Timestamp: header.Timestamp,
|
|
VMState: aers[0].VMState.String(),
|
|
}
|
|
return res, nil
|
|
}
|
|
return tx.Bytes(), nil
|
|
}
|
|
|
|
func (s *Server) getTransactionHeight(ps params.Params) (interface{}, *neorpc.Error) {
|
|
h, err := ps.Value(0).GetUint256()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
|
|
_, height, err := s.chain.GetTransaction(h)
|
|
if err != nil || height == math.MaxUint32 {
|
|
return nil, neorpc.ErrUnknownTransaction
|
|
}
|
|
|
|
return height, nil
|
|
}
|
|
|
|
// getContractState returns contract state (contract information, according to the contract script hash,
|
|
// contract id or native contract name).
|
|
func (s *Server) getContractState(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
scriptHash, err := s.contractScriptHashFromParam(reqParams.Value(0))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
cs := s.chain.GetContractState(scriptHash)
|
|
if cs == nil {
|
|
return nil, neorpc.NewRPCError("Unknown contract", "")
|
|
}
|
|
return cs, nil
|
|
}
|
|
|
|
func (s *Server) getNativeContracts(_ params.Params) (interface{}, *neorpc.Error) {
|
|
return s.chain.GetNatives(), nil
|
|
}
|
|
|
|
// getBlockSysFee returns the system fees of the block, based on the specified index.
|
|
func (s *Server) getBlockSysFee(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
num, err := s.blockHeightFromParam(reqParams.Value(0))
|
|
if err != nil {
|
|
return 0, neorpc.NewRPCError("Invalid height", "invalid block identifier")
|
|
}
|
|
|
|
headerHash := s.chain.GetHeaderHash(num)
|
|
block, errBlock := s.chain.GetBlock(headerHash)
|
|
if errBlock != nil {
|
|
return 0, neorpc.ErrUnknownBlock
|
|
}
|
|
|
|
var blockSysFee int64
|
|
for _, tx := range block.Transactions {
|
|
blockSysFee += tx.SystemFee
|
|
}
|
|
|
|
return blockSysFee, nil
|
|
}
|
|
|
|
// getBlockHeader returns the corresponding block header information according to the specified script hash.
|
|
func (s *Server) getBlockHeader(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
param := reqParams.Value(0)
|
|
hash, respErr := s.blockHashFromParam(param)
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
|
|
verbose, _ := reqParams.Value(1).GetBoolean()
|
|
h, err := s.chain.GetHeader(hash)
|
|
if err != nil {
|
|
return nil, neorpc.ErrUnknownHeader
|
|
}
|
|
|
|
if verbose {
|
|
res := result.Header{
|
|
Header: *h,
|
|
BlockMetadata: s.fillBlockMetadata(h, h),
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
buf := io.NewBufBinWriter()
|
|
h.EncodeBinary(buf.BinWriter)
|
|
if buf.Err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("encoding error: %s", buf.Err))
|
|
}
|
|
return buf.Bytes(), nil
|
|
}
|
|
|
|
// getUnclaimedGas returns unclaimed GAS amount of the specified address.
|
|
func (s *Server) getUnclaimedGas(ps params.Params) (interface{}, *neorpc.Error) {
|
|
u, err := ps.Value(0).GetUint160FromAddressOrHex()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
|
|
neo, _ := s.chain.GetGoverningTokenBalance(u)
|
|
if neo.Sign() == 0 {
|
|
return result.UnclaimedGas{
|
|
Address: u,
|
|
}, nil
|
|
}
|
|
gas, err := s.chain.CalculateClaimable(u, s.chain.BlockHeight()+1) // +1 as in C#, for the next block.
|
|
if err != nil {
|
|
return nil, neorpc.NewRPCError("Can't calculate claimable", err.Error())
|
|
}
|
|
return result.UnclaimedGas{
|
|
Address: u,
|
|
Unclaimed: *gas,
|
|
}, nil
|
|
}
|
|
|
|
// getCandidates returns the current list of candidates with their active/inactive voting status.
|
|
func (s *Server) getCandidates(_ params.Params) (interface{}, *neorpc.Error) {
|
|
var validators keys.PublicKeys
|
|
|
|
validators, err := s.chain.GetNextBlockValidators()
|
|
if err != nil {
|
|
return nil, neorpc.NewRPCError("Can't get next block validators", err.Error())
|
|
}
|
|
enrollments, err := s.chain.GetEnrollments()
|
|
if err != nil {
|
|
return nil, neorpc.NewRPCError("Can't get enrollments", err.Error())
|
|
}
|
|
var res = make([]result.Candidate, 0)
|
|
for _, v := range enrollments {
|
|
res = append(res, result.Candidate{
|
|
PublicKey: *v.Key,
|
|
Votes: v.Votes.Int64(),
|
|
Active: validators.Contains(v.Key),
|
|
})
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
// getNextBlockValidators returns validators for the next block with voting status.
|
|
func (s *Server) getNextBlockValidators(_ params.Params) (interface{}, *neorpc.Error) {
|
|
var validators keys.PublicKeys
|
|
|
|
validators, err := s.chain.GetNextBlockValidators()
|
|
if err != nil {
|
|
return nil, neorpc.NewRPCError("Can't get next block validators", err.Error())
|
|
}
|
|
enrollments, err := s.chain.GetEnrollments()
|
|
if err != nil {
|
|
return nil, neorpc.NewRPCError("Can't get enrollments", err.Error())
|
|
}
|
|
var res = make([]result.Validator, 0)
|
|
for _, v := range enrollments {
|
|
if !validators.Contains(v.Key) {
|
|
continue
|
|
}
|
|
res = append(res, result.Validator{
|
|
PublicKey: *v.Key,
|
|
Votes: v.Votes.Int64(),
|
|
})
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
// getCommittee returns the current list of NEO committee members.
|
|
func (s *Server) getCommittee(_ params.Params) (interface{}, *neorpc.Error) {
|
|
keys, err := s.chain.GetCommittee()
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("can't get committee members: %s", err))
|
|
}
|
|
return keys, nil
|
|
}
|
|
|
|
// invokeFunction implements the `invokeFunction` RPC call.
|
|
func (s *Server) invokeFunction(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
tx, verbose, respErr := s.getInvokeFunctionParams(reqParams)
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
return s.runScriptInVM(trigger.Application, tx.Script, util.Uint160{}, tx, nil, verbose)
|
|
}
|
|
|
|
// invokeFunctionHistoric implements the `invokeFunctionHistoric` RPC call.
|
|
func (s *Server) invokeFunctionHistoric(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
nextH, respErr := s.getHistoricParams(reqParams)
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
if len(reqParams) < 2 {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
tx, verbose, respErr := s.getInvokeFunctionParams(reqParams[1:])
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
return s.runScriptInVM(trigger.Application, tx.Script, util.Uint160{}, tx, &nextH, verbose)
|
|
}
|
|
|
|
func (s *Server) getInvokeFunctionParams(reqParams params.Params) (*transaction.Transaction, bool, *neorpc.Error) {
|
|
if len(reqParams) < 2 {
|
|
return nil, false, neorpc.ErrInvalidParams
|
|
}
|
|
scriptHash, responseErr := s.contractScriptHashFromParam(reqParams.Value(0))
|
|
if responseErr != nil {
|
|
return nil, false, responseErr
|
|
}
|
|
method, err := reqParams[1].GetString()
|
|
if err != nil {
|
|
return nil, false, neorpc.ErrInvalidParams
|
|
}
|
|
var invparams *params.Param
|
|
if len(reqParams) > 2 {
|
|
invparams = &reqParams[2]
|
|
}
|
|
tx := &transaction.Transaction{}
|
|
if len(reqParams) > 3 {
|
|
signers, _, err := reqParams[3].GetSignersWithWitnesses()
|
|
if err != nil {
|
|
return nil, false, neorpc.ErrInvalidParams
|
|
}
|
|
tx.Signers = signers
|
|
}
|
|
var verbose bool
|
|
if len(reqParams) > 4 {
|
|
verbose, err = reqParams[4].GetBoolean()
|
|
if err != nil {
|
|
return nil, false, neorpc.ErrInvalidParams
|
|
}
|
|
}
|
|
if len(tx.Signers) == 0 {
|
|
tx.Signers = []transaction.Signer{{Account: util.Uint160{}, Scopes: transaction.None}}
|
|
}
|
|
script, err := params.CreateFunctionInvocationScript(scriptHash, method, invparams)
|
|
if err != nil {
|
|
return nil, false, neorpc.NewInternalServerError(fmt.Sprintf("can't create invocation script: %s", err))
|
|
}
|
|
tx.Script = script
|
|
return tx, verbose, nil
|
|
}
|
|
|
|
// invokescript implements the `invokescript` RPC call.
|
|
func (s *Server) invokescript(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
tx, verbose, respErr := s.getInvokeScriptParams(reqParams)
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
return s.runScriptInVM(trigger.Application, tx.Script, util.Uint160{}, tx, nil, verbose)
|
|
}
|
|
|
|
// invokescripthistoric implements the `invokescripthistoric` RPC call.
|
|
func (s *Server) invokescripthistoric(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
nextH, respErr := s.getHistoricParams(reqParams)
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
if len(reqParams) < 2 {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
tx, verbose, respErr := s.getInvokeScriptParams(reqParams[1:])
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
return s.runScriptInVM(trigger.Application, tx.Script, util.Uint160{}, tx, &nextH, verbose)
|
|
}
|
|
|
|
func (s *Server) getInvokeScriptParams(reqParams params.Params) (*transaction.Transaction, bool, *neorpc.Error) {
|
|
script, err := reqParams.Value(0).GetBytesBase64()
|
|
if err != nil {
|
|
return nil, false, neorpc.ErrInvalidParams
|
|
}
|
|
|
|
tx := &transaction.Transaction{}
|
|
if len(reqParams) > 1 {
|
|
signers, witnesses, err := reqParams[1].GetSignersWithWitnesses()
|
|
if err != nil {
|
|
return nil, false, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, err.Error())
|
|
}
|
|
tx.Signers = signers
|
|
tx.Scripts = witnesses
|
|
}
|
|
var verbose bool
|
|
if len(reqParams) > 2 {
|
|
verbose, err = reqParams[2].GetBoolean()
|
|
if err != nil {
|
|
return nil, false, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, err.Error())
|
|
}
|
|
}
|
|
if len(tx.Signers) == 0 {
|
|
tx.Signers = []transaction.Signer{{Account: util.Uint160{}, Scopes: transaction.None}}
|
|
}
|
|
tx.Script = script
|
|
return tx, verbose, nil
|
|
}
|
|
|
|
// invokeContractVerify implements the `invokecontractverify` RPC call.
|
|
func (s *Server) invokeContractVerify(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
scriptHash, tx, invocationScript, respErr := s.getInvokeContractVerifyParams(reqParams)
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
return s.runScriptInVM(trigger.Verification, invocationScript, scriptHash, tx, nil, false)
|
|
}
|
|
|
|
// invokeContractVerifyHistoric implements the `invokecontractverifyhistoric` RPC call.
|
|
func (s *Server) invokeContractVerifyHistoric(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
nextH, respErr := s.getHistoricParams(reqParams)
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
if len(reqParams) < 2 {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
scriptHash, tx, invocationScript, respErr := s.getInvokeContractVerifyParams(reqParams[1:])
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
return s.runScriptInVM(trigger.Verification, invocationScript, scriptHash, tx, &nextH, false)
|
|
}
|
|
|
|
func (s *Server) getInvokeContractVerifyParams(reqParams params.Params) (util.Uint160, *transaction.Transaction, []byte, *neorpc.Error) {
|
|
scriptHash, responseErr := s.contractScriptHashFromParam(reqParams.Value(0))
|
|
if responseErr != nil {
|
|
return util.Uint160{}, nil, nil, responseErr
|
|
}
|
|
|
|
bw := io.NewBufBinWriter()
|
|
if len(reqParams) > 1 {
|
|
args, err := reqParams[1].GetArray() // second `invokecontractverify` parameter is an array of arguments for `verify` method
|
|
if err != nil {
|
|
return util.Uint160{}, nil, nil, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, err.Error())
|
|
}
|
|
if len(args) > 0 {
|
|
err := params.ExpandArrayIntoScript(bw.BinWriter, args)
|
|
if err != nil {
|
|
return util.Uint160{}, nil, nil, neorpc.NewInternalServerError(fmt.Sprintf("can't create witness invocation script: %s", err))
|
|
}
|
|
}
|
|
}
|
|
invocationScript := bw.Bytes()
|
|
|
|
tx := &transaction.Transaction{Script: []byte{byte(opcode.RET)}} // need something in script
|
|
if len(reqParams) > 2 {
|
|
signers, witnesses, err := reqParams[2].GetSignersWithWitnesses()
|
|
if err != nil {
|
|
return util.Uint160{}, nil, nil, neorpc.ErrInvalidParams
|
|
}
|
|
tx.Signers = signers
|
|
tx.Scripts = witnesses
|
|
} else { // fill the only known signer - the contract with `verify` method
|
|
tx.Signers = []transaction.Signer{{Account: scriptHash}}
|
|
tx.Scripts = []transaction.Witness{{InvocationScript: invocationScript, VerificationScript: []byte{}}}
|
|
}
|
|
return scriptHash, tx, invocationScript, nil
|
|
}
|
|
|
|
// getHistoricParams checks that historic calls are supported and returns fake block
|
|
// with the specified index to perform the historic call. It also checks that
|
|
// specified stateroot is stored at the specified height for further request
|
|
// handling consistency.
|
|
func (s *Server) getHistoricParams(reqParams params.Params) (uint32, *neorpc.Error) {
|
|
if s.chain.GetConfig().KeepOnlyLatestState {
|
|
return 0, neorpc.NewInvalidRequestError(fmt.Sprintf("only latest state is supported: %s", errKeepOnlyLatestState))
|
|
}
|
|
if len(reqParams) < 1 {
|
|
return 0, neorpc.ErrInvalidParams
|
|
}
|
|
height, respErr := s.blockHeightFromParam(reqParams.Value(0))
|
|
if respErr != nil {
|
|
hash, err := reqParams.Value(0).GetUint256()
|
|
if err != nil {
|
|
return 0, neorpc.NewInvalidParamsError(fmt.Sprintf("invalid block hash or index or stateroot hash: %s", err))
|
|
}
|
|
b, err := s.chain.GetBlock(hash)
|
|
if err != nil {
|
|
stateH, err := s.chain.GetStateModule().GetLatestStateHeight(hash)
|
|
if err != nil {
|
|
return 0, neorpc.NewInvalidParamsError(fmt.Sprintf("unknown block or stateroot: %s", err))
|
|
}
|
|
height = int(stateH)
|
|
} else {
|
|
height = int(b.Index)
|
|
}
|
|
}
|
|
return uint32(height) + 1, nil
|
|
}
|
|
|
|
func (s *Server) prepareInvocationContext(t trigger.Type, script []byte, contractScriptHash util.Uint160, tx *transaction.Transaction, nextH *uint32, verbose bool) (*interop.Context, *neorpc.Error) {
|
|
var (
|
|
err error
|
|
ic *interop.Context
|
|
)
|
|
if nextH == nil {
|
|
ic, err = s.chain.GetTestVM(t, tx, nil)
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("failed to create test VM: %s", err))
|
|
}
|
|
} else {
|
|
ic, err = s.chain.GetTestHistoricVM(t, tx, *nextH)
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("failed to create historic VM: %s", err))
|
|
}
|
|
}
|
|
if verbose {
|
|
ic.VM.EnableInvocationTree()
|
|
}
|
|
ic.VM.GasLimit = int64(s.config.MaxGasInvoke)
|
|
if t == trigger.Verification {
|
|
// We need this special case because witnesses verification is not the simple System.Contract.Call,
|
|
// and we need to define exactly the amount of gas consumed for a contract witness verification.
|
|
gasPolicy := s.chain.GetMaxVerificationGAS()
|
|
if ic.VM.GasLimit > gasPolicy {
|
|
ic.VM.GasLimit = gasPolicy
|
|
}
|
|
|
|
err = s.chain.InitVerificationContext(ic, contractScriptHash, &transaction.Witness{InvocationScript: script, VerificationScript: []byte{}})
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("can't prepare verification VM: %s", err))
|
|
}
|
|
} else {
|
|
ic.VM.LoadScriptWithFlags(script, callflag.All)
|
|
}
|
|
return ic, nil
|
|
}
|
|
|
|
// runScriptInVM runs the given script in a new test VM and returns the invocation
|
|
// result. The script is either a simple script in case of `application` trigger,
|
|
// witness invocation script in case of `verification` trigger (it pushes `verify`
|
|
// arguments on stack before verification). In case of contract verification
|
|
// contractScriptHash should be specified.
|
|
func (s *Server) runScriptInVM(t trigger.Type, script []byte, contractScriptHash util.Uint160, tx *transaction.Transaction, nextH *uint32, verbose bool) (*result.Invoke, *neorpc.Error) {
|
|
ic, respErr := s.prepareInvocationContext(t, script, contractScriptHash, tx, nextH, verbose)
|
|
if respErr != nil {
|
|
return nil, respErr
|
|
}
|
|
err := ic.VM.Run()
|
|
var faultException string
|
|
if err != nil {
|
|
faultException = err.Error()
|
|
}
|
|
items := ic.VM.Estack().ToArray()
|
|
sess := s.postProcessExecStack(items)
|
|
var id uuid.UUID
|
|
|
|
if sess != nil {
|
|
// nextH == nil only when we're not using MPT-backed storage, therefore
|
|
// the second attempt won't stop here.
|
|
if s.config.SessionBackedByMPT && nextH == nil {
|
|
ic.Finalize()
|
|
// Rerun with MPT-backed storage.
|
|
return s.runScriptInVM(t, script, contractScriptHash, tx, &ic.Block.Index, verbose)
|
|
}
|
|
id = uuid.New()
|
|
sessionID := id.String()
|
|
sess.finalize = ic.Finalize
|
|
sess.timer = time.AfterFunc(time.Second*time.Duration(s.config.SessionExpirationTime), func() {
|
|
s.sessionsLock.Lock()
|
|
defer s.sessionsLock.Unlock()
|
|
if len(s.sessions) == 0 {
|
|
return
|
|
}
|
|
sess, ok := s.sessions[sessionID]
|
|
if !ok {
|
|
return
|
|
}
|
|
sess.iteratorsLock.Lock()
|
|
sess.finalize()
|
|
delete(s.sessions, sessionID)
|
|
sess.iteratorsLock.Unlock()
|
|
})
|
|
s.sessionsLock.Lock()
|
|
if len(s.sessions) >= s.config.SessionPoolSize {
|
|
ic.Finalize()
|
|
s.sessionsLock.Unlock()
|
|
return nil, neorpc.NewInternalServerError("max session capacity reached")
|
|
}
|
|
s.sessions[sessionID] = sess
|
|
s.sessionsLock.Unlock()
|
|
} else {
|
|
ic.Finalize()
|
|
}
|
|
var diag *result.InvokeDiag
|
|
tree := ic.VM.GetInvocationTree()
|
|
if tree != nil {
|
|
diag = &result.InvokeDiag{
|
|
Invocations: tree.Calls,
|
|
Changes: storage.BatchToOperations(ic.DAO.GetBatch()),
|
|
}
|
|
}
|
|
notifications := ic.Notifications
|
|
if notifications == nil {
|
|
notifications = make([]state.NotificationEvent, 0)
|
|
}
|
|
res := &result.Invoke{
|
|
State: ic.VM.State().String(),
|
|
GasConsumed: ic.VM.GasConsumed(),
|
|
Script: script,
|
|
Stack: items,
|
|
FaultException: faultException,
|
|
Notifications: notifications,
|
|
Diagnostics: diag,
|
|
Session: id,
|
|
}
|
|
|
|
return res, nil
|
|
}
|
|
|
|
// postProcessExecStack changes iterator interop items according to the server configuration.
|
|
// It does modifications in-place, but it returns a session if any iterator was registered.
|
|
func (s *Server) postProcessExecStack(stack []stackitem.Item) *session {
|
|
var sess session
|
|
|
|
for i, v := range stack {
|
|
var id uuid.UUID
|
|
|
|
stack[i], id = s.registerOrDumpIterator(v)
|
|
if id != (uuid.UUID{}) {
|
|
sess.iteratorIdentifiers = append(sess.iteratorIdentifiers, &iteratorIdentifier{
|
|
ID: id.String(),
|
|
Item: v,
|
|
})
|
|
}
|
|
}
|
|
if len(sess.iteratorIdentifiers) != 0 {
|
|
return &sess
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// registerOrDumpIterator changes iterator interop stack items into result.Iterator
|
|
// interop stack items and returns a uuid for it if sessions are enabled. All the other stack
|
|
// items are not changed.
|
|
func (s *Server) registerOrDumpIterator(item stackitem.Item) (stackitem.Item, uuid.UUID) {
|
|
var iterID uuid.UUID
|
|
|
|
if (item.Type() != stackitem.InteropT) || !iterator.IsIterator(item) {
|
|
return item, iterID
|
|
}
|
|
var resIterator result.Iterator
|
|
|
|
if s.config.SessionEnabled {
|
|
iterID = uuid.New()
|
|
resIterator.ID = &iterID
|
|
} else {
|
|
resIterator.Values, resIterator.Truncated = iterator.ValuesTruncated(item, s.config.MaxIteratorResultItems)
|
|
}
|
|
return stackitem.NewInterop(resIterator), iterID
|
|
}
|
|
|
|
func (s *Server) traverseIterator(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
if !s.config.SessionEnabled {
|
|
return nil, neorpc.NewInvalidRequestError("sessions are disabled")
|
|
}
|
|
sID, err := reqParams.Value(0).GetUUID()
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("invalid session ID: %s", err))
|
|
}
|
|
iID, err := reqParams.Value(1).GetUUID()
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("invalid iterator ID: %s", err))
|
|
}
|
|
count, err := reqParams.Value(2).GetInt()
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("invalid iterator items count: %s", err))
|
|
}
|
|
if err := checkInt32(count); err != nil {
|
|
return nil, neorpc.NewInvalidParamsError("invalid iterator items count: not an int32")
|
|
}
|
|
if count > s.config.MaxIteratorResultItems {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("iterator items count is out of range (%d at max)", s.config.MaxIteratorResultItems))
|
|
}
|
|
|
|
s.sessionsLock.Lock()
|
|
session, ok := s.sessions[sID.String()]
|
|
if !ok {
|
|
s.sessionsLock.Unlock()
|
|
return []json.RawMessage{}, nil
|
|
}
|
|
session.iteratorsLock.Lock()
|
|
// Perform `till` update only after session.iteratorsLock is taken in order to have more
|
|
// precise session lifetime.
|
|
session.timer.Reset(time.Second * time.Duration(s.config.SessionExpirationTime))
|
|
s.sessionsLock.Unlock()
|
|
|
|
var (
|
|
iIDStr = iID.String()
|
|
iVals []stackitem.Item
|
|
)
|
|
for _, it := range session.iteratorIdentifiers {
|
|
if iIDStr == it.ID {
|
|
iVals = iterator.Values(it.Item, count)
|
|
break
|
|
}
|
|
}
|
|
session.iteratorsLock.Unlock()
|
|
|
|
result := make([]json.RawMessage, len(iVals))
|
|
for j := range iVals {
|
|
result[j], err = stackitem.ToJSONWithTypes(iVals[j])
|
|
if err != nil {
|
|
return nil, neorpc.NewInternalServerError(fmt.Sprintf("failed to marshal iterator value: %s", err))
|
|
}
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (s *Server) terminateSession(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
if !s.config.SessionEnabled {
|
|
return nil, neorpc.NewInvalidRequestError("sessions are disabled")
|
|
}
|
|
sID, err := reqParams.Value(0).GetUUID()
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("invalid session ID: %s", err))
|
|
}
|
|
strSID := sID.String()
|
|
s.sessionsLock.Lock()
|
|
defer s.sessionsLock.Unlock()
|
|
session, ok := s.sessions[strSID]
|
|
if ok {
|
|
// Iterators access Seek channel under the hood; finalizer closes this channel, thus,
|
|
// we need to perform finalisation under iteratorsLock.
|
|
session.iteratorsLock.Lock()
|
|
session.finalize()
|
|
if !session.timer.Stop() {
|
|
<-session.timer.C
|
|
}
|
|
delete(s.sessions, strSID)
|
|
session.iteratorsLock.Unlock()
|
|
}
|
|
return ok, nil
|
|
}
|
|
|
|
// submitBlock broadcasts a raw block over the NEO network.
|
|
func (s *Server) submitBlock(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
blockBytes, err := reqParams.Value(0).GetBytesBase64()
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("missing parameter or not a base64: %s", err))
|
|
}
|
|
b := block.New(s.stateRootEnabled)
|
|
r := io.NewBinReaderFromBuf(blockBytes)
|
|
b.DecodeBinary(r)
|
|
if r.Err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("can't decode block: %s", r.Err))
|
|
}
|
|
err = s.chain.AddBlock(b)
|
|
if err != nil {
|
|
switch {
|
|
case errors.Is(err, core.ErrInvalidBlockIndex) || errors.Is(err, core.ErrAlreadyExists):
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrAlreadyExists, err.Error())
|
|
default:
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrValidationFailed, err.Error())
|
|
}
|
|
}
|
|
return &result.RelayResult{
|
|
Hash: b.Hash(),
|
|
}, nil
|
|
}
|
|
|
|
// submitNotaryRequest broadcasts P2PNotaryRequest over the NEO network.
|
|
func (s *Server) submitNotaryRequest(ps params.Params) (interface{}, *neorpc.Error) {
|
|
if !s.chain.P2PSigExtensionsEnabled() {
|
|
return nil, neorpc.NewRPCError("P2PSignatureExtensions are disabled", "")
|
|
}
|
|
|
|
bytePayload, err := ps.Value(0).GetBytesBase64()
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("not a base64: %s", err))
|
|
}
|
|
r, err := payload.NewP2PNotaryRequestFromBytes(bytePayload)
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("can't decode notary payload: %s", err))
|
|
}
|
|
return getRelayResult(s.coreServer.RelayP2PNotaryRequest(r), r.FallbackTransaction.Hash())
|
|
}
|
|
|
|
// getRelayResult returns successful relay result or an error.
|
|
func getRelayResult(err error, hash util.Uint256) (interface{}, *neorpc.Error) {
|
|
switch {
|
|
case err == nil:
|
|
return result.RelayResult{
|
|
Hash: hash,
|
|
}, nil
|
|
case errors.Is(err, core.ErrAlreadyExists):
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrAlreadyExists, err.Error())
|
|
case errors.Is(err, core.ErrOOM):
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrOutOfMemory, err.Error())
|
|
case errors.Is(err, core.ErrPolicy):
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrPolicyFail, err.Error())
|
|
default:
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrValidationFailed, err.Error())
|
|
}
|
|
}
|
|
|
|
func (s *Server) submitOracleResponse(ps params.Params) (interface{}, *neorpc.Error) {
|
|
oracle := s.oracle.Load().(*OracleHandler)
|
|
if oracle == nil || *oracle == nil {
|
|
return nil, neorpc.NewRPCError("Oracle is not enabled", "")
|
|
}
|
|
var pub *keys.PublicKey
|
|
pubBytes, err := ps.Value(0).GetBytesBase64()
|
|
if err == nil {
|
|
pub, err = keys.NewPublicKeyFromBytes(pubBytes, elliptic.P256())
|
|
}
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("public key is missing: %s", err))
|
|
}
|
|
reqID, err := ps.Value(1).GetInt()
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("request ID is missing: %s", err))
|
|
}
|
|
txSig, err := ps.Value(2).GetBytesBase64()
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("tx signature is missing: %s", err))
|
|
}
|
|
msgSig, err := ps.Value(3).GetBytesBase64()
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("msg signature is missing: %s", err))
|
|
}
|
|
data := broadcaster.GetMessage(pubBytes, uint64(reqID), txSig)
|
|
if !pub.Verify(msgSig, hash.Sha256(data).BytesBE()) {
|
|
return nil, neorpc.NewRPCError("Invalid request signature", "")
|
|
}
|
|
(*oracle).AddResponse(pub, uint64(reqID), txSig)
|
|
return json.RawMessage([]byte("{}")), nil
|
|
}
|
|
|
|
func (s *Server) sendrawtransaction(reqParams params.Params) (interface{}, *neorpc.Error) {
|
|
if len(reqParams) < 1 {
|
|
return nil, neorpc.NewInvalidParamsError("not enough parameters")
|
|
}
|
|
byteTx, err := reqParams[0].GetBytesBase64()
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("not a base64: %s", err))
|
|
}
|
|
tx, err := transaction.NewTransactionFromBytes(byteTx)
|
|
if err != nil {
|
|
return nil, neorpc.NewInvalidParamsError(fmt.Sprintf("can't decode transaction: %s", err))
|
|
}
|
|
return getRelayResult(s.coreServer.RelayTxn(tx), tx.Hash())
|
|
}
|
|
|
|
// subscribe handles subscription requests from websocket clients.
|
|
func (s *Server) subscribe(reqParams params.Params, sub *subscriber) (interface{}, *neorpc.Error) {
|
|
streamName, err := reqParams.Value(0).GetString()
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
event, err := neorpc.GetEventIDFromString(streamName)
|
|
if err != nil || event == neorpc.MissedEventID {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
if event == neorpc.NotaryRequestEventID && !s.chain.P2PSigExtensionsEnabled() {
|
|
return nil, neorpc.WrapErrorWithData(neorpc.ErrInvalidParams, "P2PSigExtensions are disabled")
|
|
}
|
|
// Optional filter.
|
|
var filter interface{}
|
|
if p := reqParams.Value(1); p != nil {
|
|
param := *p
|
|
jd := json.NewDecoder(bytes.NewReader(param.RawMessage))
|
|
jd.DisallowUnknownFields()
|
|
switch event {
|
|
case neorpc.BlockEventID:
|
|
flt := new(neorpc.BlockFilter)
|
|
err = jd.Decode(flt)
|
|
filter = *flt
|
|
case neorpc.TransactionEventID, neorpc.NotaryRequestEventID:
|
|
flt := new(neorpc.TxFilter)
|
|
err = jd.Decode(flt)
|
|
filter = *flt
|
|
case neorpc.NotificationEventID:
|
|
flt := new(neorpc.NotificationFilter)
|
|
err = jd.Decode(flt)
|
|
filter = *flt
|
|
case neorpc.ExecutionEventID:
|
|
flt := new(neorpc.ExecutionFilter)
|
|
err = jd.Decode(flt)
|
|
if err == nil && (flt.State == "HALT" || flt.State == "FAULT") {
|
|
filter = *flt
|
|
} else if err == nil {
|
|
err = errors.New("invalid state")
|
|
}
|
|
}
|
|
if err != nil {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
}
|
|
|
|
s.subsLock.Lock()
|
|
defer s.subsLock.Unlock()
|
|
select {
|
|
case <-s.shutdown:
|
|
return nil, neorpc.NewInternalServerError("server is shutting down")
|
|
default:
|
|
}
|
|
var id int
|
|
for ; id < len(sub.feeds); id++ {
|
|
if sub.feeds[id].event == neorpc.InvalidEventID {
|
|
break
|
|
}
|
|
}
|
|
if id == len(sub.feeds) {
|
|
return nil, neorpc.NewInternalServerError("maximum number of subscriptions is reached")
|
|
}
|
|
sub.feeds[id].event = event
|
|
sub.feeds[id].filter = filter
|
|
s.subscribeToChannel(event)
|
|
return strconv.FormatInt(int64(id), 10), nil
|
|
}
|
|
|
|
// subscribeToChannel subscribes RPC server to appropriate chain events if
|
|
// it's not yet subscribed for them. It's supposed to be called with s.subsLock
|
|
// taken by the caller.
|
|
func (s *Server) subscribeToChannel(event neorpc.EventID) {
|
|
switch event {
|
|
case neorpc.BlockEventID:
|
|
if s.blockSubs == 0 {
|
|
s.chain.SubscribeForBlocks(s.blockCh)
|
|
}
|
|
s.blockSubs++
|
|
case neorpc.TransactionEventID:
|
|
if s.transactionSubs == 0 {
|
|
s.chain.SubscribeForTransactions(s.transactionCh)
|
|
}
|
|
s.transactionSubs++
|
|
case neorpc.NotificationEventID:
|
|
if s.notificationSubs == 0 {
|
|
s.chain.SubscribeForNotifications(s.notificationCh)
|
|
}
|
|
s.notificationSubs++
|
|
case neorpc.ExecutionEventID:
|
|
if s.executionSubs == 0 {
|
|
s.chain.SubscribeForExecutions(s.executionCh)
|
|
}
|
|
s.executionSubs++
|
|
case neorpc.NotaryRequestEventID:
|
|
if s.notaryRequestSubs == 0 {
|
|
s.coreServer.SubscribeForNotaryRequests(s.notaryRequestCh)
|
|
}
|
|
s.notaryRequestSubs++
|
|
}
|
|
}
|
|
|
|
// unsubscribe handles unsubscription requests from websocket clients.
|
|
func (s *Server) unsubscribe(reqParams params.Params, sub *subscriber) (interface{}, *neorpc.Error) {
|
|
id, err := reqParams.Value(0).GetInt()
|
|
if err != nil || id < 0 {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
s.subsLock.Lock()
|
|
defer s.subsLock.Unlock()
|
|
if len(sub.feeds) <= id || sub.feeds[id].event == neorpc.InvalidEventID {
|
|
return nil, neorpc.ErrInvalidParams
|
|
}
|
|
event := sub.feeds[id].event
|
|
sub.feeds[id].event = neorpc.InvalidEventID
|
|
sub.feeds[id].filter = nil
|
|
s.unsubscribeFromChannel(event)
|
|
return true, nil
|
|
}
|
|
|
|
// unsubscribeFromChannel unsubscribes RPC server from appropriate chain events
|
|
// if there are no other subscribers for it. It's supposed to be called with
|
|
// s.subsLock taken by the caller.
|
|
func (s *Server) unsubscribeFromChannel(event neorpc.EventID) {
|
|
switch event {
|
|
case neorpc.BlockEventID:
|
|
s.blockSubs--
|
|
if s.blockSubs == 0 {
|
|
s.chain.UnsubscribeFromBlocks(s.blockCh)
|
|
}
|
|
case neorpc.TransactionEventID:
|
|
s.transactionSubs--
|
|
if s.transactionSubs == 0 {
|
|
s.chain.UnsubscribeFromTransactions(s.transactionCh)
|
|
}
|
|
case neorpc.NotificationEventID:
|
|
s.notificationSubs--
|
|
if s.notificationSubs == 0 {
|
|
s.chain.UnsubscribeFromNotifications(s.notificationCh)
|
|
}
|
|
case neorpc.ExecutionEventID:
|
|
s.executionSubs--
|
|
if s.executionSubs == 0 {
|
|
s.chain.UnsubscribeFromExecutions(s.executionCh)
|
|
}
|
|
case neorpc.NotaryRequestEventID:
|
|
s.notaryRequestSubs--
|
|
if s.notaryRequestSubs == 0 {
|
|
s.coreServer.UnsubscribeFromNotaryRequests(s.notaryRequestCh)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (s *Server) handleSubEvents() {
|
|
b, err := json.Marshal(neorpc.Notification{
|
|
JSONRPC: neorpc.JSONRPCVersion,
|
|
Event: neorpc.MissedEventID,
|
|
Payload: make([]interface{}, 0),
|
|
})
|
|
if err != nil {
|
|
s.log.Error("fatal: failed to marshal overflow event", zap.Error(err))
|
|
return
|
|
}
|
|
overflowMsg, err := websocket.NewPreparedMessage(websocket.TextMessage, b)
|
|
if err != nil {
|
|
s.log.Error("fatal: failed to prepare overflow message", zap.Error(err))
|
|
return
|
|
}
|
|
chloop:
|
|
for {
|
|
var resp = neorpc.Notification{
|
|
JSONRPC: neorpc.JSONRPCVersion,
|
|
Payload: make([]interface{}, 1),
|
|
}
|
|
var msg *websocket.PreparedMessage
|
|
select {
|
|
case <-s.shutdown:
|
|
break chloop
|
|
case b := <-s.blockCh:
|
|
resp.Event = neorpc.BlockEventID
|
|
resp.Payload[0] = b
|
|
case execution := <-s.executionCh:
|
|
resp.Event = neorpc.ExecutionEventID
|
|
resp.Payload[0] = execution
|
|
case notification := <-s.notificationCh:
|
|
resp.Event = neorpc.NotificationEventID
|
|
resp.Payload[0] = notification
|
|
case tx := <-s.transactionCh:
|
|
resp.Event = neorpc.TransactionEventID
|
|
resp.Payload[0] = tx
|
|
case e := <-s.notaryRequestCh:
|
|
resp.Event = neorpc.NotaryRequestEventID
|
|
resp.Payload[0] = &result.NotaryRequestEvent{
|
|
Type: e.Type,
|
|
NotaryRequest: e.Data.(*payload.P2PNotaryRequest),
|
|
}
|
|
}
|
|
s.subsLock.RLock()
|
|
subloop:
|
|
for sub := range s.subscribers {
|
|
if sub.overflown.Load() {
|
|
continue
|
|
}
|
|
for i := range sub.feeds {
|
|
if sub.feeds[i].Matches(&resp) {
|
|
if msg == nil {
|
|
b, err = json.Marshal(resp)
|
|
if err != nil {
|
|
s.log.Error("failed to marshal notification",
|
|
zap.Error(err),
|
|
zap.String("type", resp.Event.String()))
|
|
break subloop
|
|
}
|
|
msg, err = websocket.NewPreparedMessage(websocket.TextMessage, b)
|
|
if err != nil {
|
|
s.log.Error("failed to prepare notification message",
|
|
zap.Error(err),
|
|
zap.String("type", resp.Event.String()))
|
|
break subloop
|
|
}
|
|
}
|
|
select {
|
|
case sub.writer <- msg:
|
|
default:
|
|
sub.overflown.Store(true)
|
|
// MissedEvent is to be delivered eventually.
|
|
go func(sub *subscriber) {
|
|
sub.writer <- overflowMsg
|
|
sub.overflown.Store(false)
|
|
}(sub)
|
|
}
|
|
// The message is sent only once per subscriber.
|
|
break
|
|
}
|
|
}
|
|
}
|
|
s.subsLock.RUnlock()
|
|
}
|
|
// It's important to do it with lock held because no subscription routine
|
|
// should be running concurrently to this one. And even if one is to run
|
|
// after unlock, it'll see closed s.shutdown and won't subscribe.
|
|
s.subsLock.Lock()
|
|
// There might be no subscription in reality, but it's not a problem as
|
|
// core.Blockchain allows unsubscribing non-subscribed channels.
|
|
s.chain.UnsubscribeFromBlocks(s.blockCh)
|
|
s.chain.UnsubscribeFromTransactions(s.transactionCh)
|
|
s.chain.UnsubscribeFromNotifications(s.notificationCh)
|
|
s.chain.UnsubscribeFromExecutions(s.executionCh)
|
|
if s.chain.P2PSigExtensionsEnabled() {
|
|
s.coreServer.UnsubscribeFromNotaryRequests(s.notaryRequestCh)
|
|
}
|
|
s.subsLock.Unlock()
|
|
drainloop:
|
|
for {
|
|
select {
|
|
case <-s.blockCh:
|
|
case <-s.executionCh:
|
|
case <-s.notificationCh:
|
|
case <-s.transactionCh:
|
|
case <-s.notaryRequestCh:
|
|
default:
|
|
break drainloop
|
|
}
|
|
}
|
|
// It's not required closing these, but since they're drained already
|
|
// this is safe and it also allows to give a signal to Shutdown routine.
|
|
close(s.blockCh)
|
|
close(s.transactionCh)
|
|
close(s.notificationCh)
|
|
close(s.executionCh)
|
|
close(s.notaryRequestCh)
|
|
}
|
|
|
|
func (s *Server) blockHeightFromParam(param *params.Param) (int, *neorpc.Error) {
|
|
num, err := param.GetInt()
|
|
if err != nil {
|
|
return 0, neorpc.ErrInvalidParams
|
|
}
|
|
|
|
if num < 0 || num > int(s.chain.BlockHeight()) {
|
|
return 0, invalidBlockHeightError(0, num)
|
|
}
|
|
return num, nil
|
|
}
|
|
|
|
func (s *Server) packResponse(r *params.In, result interface{}, respErr *neorpc.Error) abstract {
|
|
resp := abstract{
|
|
Header: neorpc.Header{
|
|
JSONRPC: r.JSONRPC,
|
|
ID: r.RawID,
|
|
},
|
|
}
|
|
if respErr != nil {
|
|
resp.Error = respErr
|
|
} else {
|
|
resp.Result = result
|
|
}
|
|
return resp
|
|
}
|
|
|
|
// logRequestError is a request error logger.
|
|
func (s *Server) logRequestError(r *params.Request, jsonErr *neorpc.Error) {
|
|
logFields := []zap.Field{
|
|
zap.Int64("code", jsonErr.Code),
|
|
}
|
|
if len(jsonErr.Data) != 0 {
|
|
logFields = append(logFields, zap.String("cause", jsonErr.Data))
|
|
}
|
|
|
|
if r.In != nil {
|
|
logFields = append(logFields, zap.String("method", r.In.Method))
|
|
params := params.Params(r.In.RawParams)
|
|
logFields = append(logFields, zap.Any("params", params))
|
|
}
|
|
|
|
logText := "Error encountered with rpc request"
|
|
switch jsonErr.Code {
|
|
case neorpc.InternalServerErrorCode:
|
|
s.log.Error(logText, logFields...)
|
|
default:
|
|
s.log.Info(logText, logFields...)
|
|
}
|
|
}
|
|
|
|
// writeHTTPErrorResponse writes an error response to the ResponseWriter.
|
|
func (s *Server) writeHTTPErrorResponse(r *params.In, w http.ResponseWriter, jsonErr *neorpc.Error) {
|
|
resp := s.packResponse(r, nil, jsonErr)
|
|
s.writeHTTPServerResponse(¶ms.Request{In: r}, w, resp)
|
|
}
|
|
|
|
func setCORSOriginHeaders(h http.Header) {
|
|
h.Set("Access-Control-Allow-Origin", "*")
|
|
h.Set("Access-Control-Allow-Headers", "Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With")
|
|
}
|
|
|
|
func (s *Server) writeHTTPServerResponse(r *params.Request, w http.ResponseWriter, resp abstractResult) {
|
|
// Errors can happen in many places and we can only catch ALL of them here.
|
|
resp.RunForErrors(func(jsonErr *neorpc.Error) {
|
|
s.logRequestError(r, jsonErr)
|
|
})
|
|
if r.In != nil {
|
|
resp := resp.(abstract)
|
|
if resp.Error != nil {
|
|
w.WriteHeader(getHTTPCodeForError(resp.Error))
|
|
}
|
|
}
|
|
w.Header().Set("Content-Type", "application/json; charset=utf-8")
|
|
if s.config.EnableCORSWorkaround {
|
|
setCORSOriginHeaders(w.Header())
|
|
}
|
|
|
|
encoder := json.NewEncoder(w)
|
|
err := encoder.Encode(resp)
|
|
|
|
if err != nil {
|
|
switch {
|
|
case r.In != nil:
|
|
s.log.Error("Error encountered while encoding response",
|
|
zap.String("err", err.Error()),
|
|
zap.String("method", r.In.Method))
|
|
case r.Batch != nil:
|
|
s.log.Error("Error encountered while encoding batch response",
|
|
zap.String("err", err.Error()))
|
|
}
|
|
}
|
|
}
|
|
|
|
// validateAddress verifies that the address is a correct NEO address
|
|
// see https://docs.neo.org/en-us/node/cli/2.9.4/api/validateaddress.html
|
|
func validateAddress(addr interface{}) bool {
|
|
if addr, ok := addr.(string); ok {
|
|
_, err := address.StringToUint160(addr)
|
|
return err == nil
|
|
}
|
|
return false
|
|
}
|
|
|
|
func escapeForLog(in string) string {
|
|
return strings.Map(func(c rune) rune {
|
|
if !strconv.IsGraphic(c) {
|
|
return -1
|
|
}
|
|
return c
|
|
}, in)
|
|
}
|