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How to use readUint64 method of ipc Package

Best Syzkaller code snippet using ipc.readUint64

ipc.go

Source:ipc.go

1package ipc2import (3	"encoding/binary"4	"fmt"5	"io"6	"math/rand"7	"os"8	"runtime"9	"runtime/debug"10	"syscall"11	"unsafe"12	"github.com/pkg/errors"13	"github.com/oov/aviutl_rampreview/src/go/ods"14)15type IPC struct {16	cache   map[int][]byte17	storage map[string][]byte18	mappedFile syscall.Handle19	mappedView uintptr20	reply      chan error21	replyDone  chan struct{}22}23func (ipc *IPC) dispatch(cmd string) error {24	switch cmd {25	case "HELO":26		return writeUint32(0x80000000)27	case "FMO ":28		h, err := readUInt64()29		if err != nil {30			return err31		}32		if ipc.mappedView != 0 {33			if err = syscall.UnmapViewOfFile(ipc.mappedView); err != nil {34				return err35			}36			ipc.mappedView = 037		}38		if ipc.mappedFile != 0 {39			if err = syscall.CloseHandle(ipc.mappedFile); err != nil {40				return err41			}42			ipc.mappedFile = 043		}44		ipc.mappedFile = syscall.Handle(h)45		ipc.mappedView, err = syscall.MapViewOfFile(ipc.mappedFile, syscall.FILE_MAP_WRITE, 0, 0, 0)46		if err != nil {47			syscall.CloseHandle(ipc.mappedFile)48			ipc.mappedFile = 049			return err50		}51		return writeUint32(0x80000000)52	case "PUT ":53		key, err := readInt32()54		if err != nil {55			return err56		}57		size, err := readInt32()58		if err != nil {59			return err60		}61		if ipc.mappedFile == 0 || ipc.mappedView == 0 {62			return errors.New("not initialized yet")63		}64		buf := make([]byte, size)65		copy(buf, ((*[1 << 49]byte)(unsafe.Pointer(ipc.mappedView)))[:size:size])66		ipc.cache[key] = buf67		return writeUint32(0x80000000)68	case "GET ":69		key, err := readInt32()70		if err != nil {71			return err72		}73		if ipc.mappedFile == 0 || ipc.mappedView == 0 {74			return errors.New("not initialized yet")75		}76		if err = writeUint32(0x80000000); err != nil {77			return err78		}79		if buf, ok := ipc.cache[key]; ok {80			copy(((*[1 << 49]byte)(unsafe.Pointer(ipc.mappedView)))[:], buf)81			err = writeInt32(int32(len(buf)))82		} else {83			err = writeInt32(0)84		}85		return err86	case "CLR ":87		ipc.cache = map[int][]byte{}88		runtime.GC()89		debug.FreeOSMemory()90		return writeUint32(0x80000000)91	case "PUTS":92		key, err := readString()93		if err != nil {94			return err95		}96		size, err := readInt32()97		if err != nil {98			return err99		}100		if ipc.mappedFile == 0 || ipc.mappedView == 0 {101			return errors.New("not initialized yet")102		}103		buf := make([]byte, size)104		copy(buf, ((*[1 << 49]byte)(unsafe.Pointer(ipc.mappedView)))[:size:size])105		ipc.storage[key] = buf106		if rand.Float32() > 0.97 {107			runtime.GC()108			debug.FreeOSMemory()109		}110		return writeUint32(0x80000000)111	case "DELS":112		key, err := readString()113		if err != nil {114			return err115		}116		delete(ipc.storage, key)117		return writeUint32(0x80000000)118	case "GETS":119		key, err := readString()120		if err != nil {121			return err122		}123		if ipc.mappedFile == 0 || ipc.mappedView == 0 {124			return errors.New("not initialized yet")125		}126		if err = writeUint32(0x80000000); err != nil {127			return err128		}129		if buf, ok := ipc.storage[key]; ok {130			copy(((*[1 << 49]byte)(unsafe.Pointer(ipc.mappedView)))[:], buf)131			err = writeInt32(int32(len(buf)))132		} else {133			err = writeInt32(0)134		}135		return err136	case "CLRS":137		ipc.storage = map[string][]byte{}138		runtime.GC()139		debug.FreeOSMemory()140		return writeUint32(0x80000000)141	case "STAT":142		var m runtime.MemStats143		runtime.ReadMemStats(&m)144		if err := writeUint32(0x80000000); err != nil {145			return err146		}147		return writeUint64(m.Alloc)148	}149	return errors.New("unknown command")150}151func (ipc *IPC) readCommand(r chan string) {152	cmd := make([]byte, 4)153	for {154		ods.ODS("wait next command...")155		if read, err := io.ReadFull(os.Stdin, cmd); err != nil || read != 4 {156			r <- fmt.Sprintf("error: %v", err)157			return158		}159		l := binary.LittleEndian.Uint32(cmd)160		if l&0x80000000 == 0 {161			break162		}163		l &= 0x7fffffff164		if l == 0 {165			ods.ODS("readCommand: reply no error")166			ipc.reply <- nil167		} else {168			buf := make([]byte, l)169			read, err := io.ReadFull(os.Stdin, buf)170			if err != nil {171				r <- fmt.Sprintf("error: %v", err)172				return173			}174			if read != int(l) {175				r <- fmt.Sprintf("error: %v", errors.New("unexcepted read size"))176				return177			}178			ods.ODS("readCommand: reply %s", string(buf))179			ipc.reply <- errors.New(string(buf))180		}181		<-ipc.replyDone182	}183	ods.ODS("readCommand: cmd %s", string(cmd))184	r <- string(cmd)185}186func (ipc *IPC) gc() {187}188func (ipc *IPC) Main(exitCh chan<- struct{}) {189	defer func() {190		if err := recover(); err != nil {191			ods.Recover(err)192		}193		if ipc.mappedView != 0 {194			syscall.UnmapViewOfFile(ipc.mappedView)195			ipc.mappedView = 0196		}197		if ipc.mappedFile != 0 {198			syscall.CloseHandle(ipc.mappedFile)199			ipc.mappedFile = 0200		}201		close(exitCh)202	}()203	cmdCh := make(chan string)204	go ipc.readCommand(cmdCh)205	for {206		select {207		case cmd := <-cmdCh:208			if len(cmd) != 4 {209				ods.ODS("%s", cmd) // report error210				return211			}212			ods.ODS("%s", cmd)213			if err := ipc.dispatch(cmd); err != nil {214				ods.ODS("error: %v", err)215				if err = writeReply(err); err != nil {216					return217				}218			}219			ods.ODS("%s END", cmd)220			go ipc.readCommand(cmdCh)221		}222	}223}224func New() *IPC {225	r := &IPC{226		cache:   map[int][]byte{},227		storage: map[string][]byte{},228		reply:     make(chan error),229		replyDone: make(chan struct{}),230	}231	return r232}...

encoding.go

Source:encoding.go

1// This Source Code Form is subject to the terms of the MIT License.2// If a copy of the MIT License was not distributed with this3// file, you can obtain one at https://opensource.org/licenses/MIT.4//5// Copyright (c) DUSK NETWORK. All rights reserved.6package utils7import (8	"bytes"9	"encoding/binary"10	"fmt"11	"io"12	"math"13	"github.com/dusk-network/dusk-blockchain/pkg/core/data/ipc/transactions"14	"github.com/dusk-network/dusk-blockchain/pkg/core/database"15	"github.com/dusk-network/dusk-blockchain/pkg/p2p/wire/encoding"16	"github.com/dusk-network/dusk-protobuf/autogen/go/rusk"17	"google.golang.org/protobuf/proto"18)19var byteOrder = binary.LittleEndian20// EncodeBlockTx tries to serialize type, index and encoded value of transactions.ContractCall.21func EncodeBlockTx(tx transactions.ContractCall, txIndex uint32) ([]byte, error) {22	buf := new(bytes.Buffer)23	// Write tx type as first field24	if err := buf.WriteByte(byte(tx.Type())); err != nil {25		return nil, err26	}27	// Write index value as second field.28	// golevedb is ordering keys lexicographically. That said, the order of the29	// stored KV is not the order of inserting30	if err := WriteUint32(buf, txIndex); err != nil {31		return nil, err32	}33	// Write tx gas spent as third field34	if err := WriteUint64(buf, tx.GasSpent()); err != nil {35		return nil, err36	}37	// Write transactions.ContractCall bytes38	if err := transactions.Marshal(buf, tx); err != nil {39		return nil, err40	}41	txErrBytes := make([]byte, 0)42	if tx.TxError() != nil {43		txerr, err := proto.Marshal(tx.TxError())44		if err != nil {45			return nil, err46		}47		txErrBytes = txerr48	}49	if err := encoding.WriteVarBytesUint32(buf, txErrBytes); err != nil {50		return nil, err51	}52	return buf.Bytes(), nil53}54// DecodeBlockTx tries to deserialize the type, index and decoded value of a tx.55func DecodeBlockTx(data []byte, typeFilter transactions.TxType) (transactions.ContractCall, uint32, error) {56	txIndex := uint32(math.MaxUint32)57	tx := transactions.NewTransaction()58	reader := bytes.NewBuffer(data)59	// Peek the type from the first byte60	typeBytes, err := reader.ReadByte()61	if err != nil {62		return nil, txIndex, err63	}64	txReadType := transactions.TxType(typeBytes)65	if typeFilter != database.AnyTxType {66		// Do not read and decode the rest of the bytes if the transaction type67		// is not same as typeFilter68		if typeFilter != txReadType {69			return nil, txIndex, fmt.Errorf("tx of type %d not found", typeFilter)70		}71	}72	// Read tx index field73	if e := ReadUint32(reader, &txIndex); e != nil {74		return nil, txIndex, e75	}76	// Read gasSpent field77	var gasSpent uint6478	if e := ReadUint64(reader, &gasSpent); e != nil {79		return nil, txIndex, e80	}81	if e := transactions.Unmarshal(reader, tx); e != nil {82		return tx, txIndex, err83	}84	var buferr []byte85	if e := encoding.ReadVarBytesUint32LE(reader, &buferr); e != nil {86		return tx, txIndex, err87	}88	if len(buferr) > 0 {89		decodeError := new(rusk.ExecutedTransaction_Error)90		if err = proto.Unmarshal(buferr, decodeError); err != nil {91			return tx, txIndex, err92		}93		tx.Error = decodeError94	}95	cc, err := transactions.UpdateTransaction(tx, gasSpent, tx.Error)96	if err != nil {97		return tx, txIndex, err98	}99	return cc, txIndex, err100}101// WriteUint32 Tx utility to use a Tx byteOrder on internal encoding.102func WriteUint32(w io.Writer, value uint32) error {103	var b [4]byte104	byteOrder.PutUint32(b[:], value)105	_, err := w.Write(b[:])106	return err107}108// ReadUint32 will read four bytes and convert them to a uint32 from the Tx109// byteOrder. The result is put into v.110func ReadUint32(r io.Reader, v *uint32) error {111	var b [4]byte112	n, err := r.Read(b[:])113	if err != nil || n != len(b) {114		return err115	}116	*v = byteOrder.Uint32(b[:])117	return nil118}119// WriteUint64 Tx utility to use a common byteOrder on internal encoding.120func WriteUint64(w io.Writer, value uint64) error {121	var b [8]byte122	byteOrder.PutUint64(b[:], value)123	_, err := w.Write(b[:])124	return err125}126// ReadUint64 will read four bytes and convert them to a uint64 from the Tx127// byteOrder. The result is put into v.128func ReadUint64(r io.Reader, v *uint64) error {129	var b [8]byte130	n, err := r.Read(b[:])131	if err != nil || n != len(b) {132		return err133	}134	*v = byteOrder.Uint64(b[:])135	return nil136}...

readUint64

Using AI Code Generation

1import (2func main() {3    ipc, err := rpc.Dial("/home/ethereum/.ethereum/geth.ipc")4    if err != nil {5        panic(err)6    }7    if err := ipc.Call(&result, "admin_nodeInfo"); err != nil {8        panic(err)9    }10    fmt.Println(result)11}

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