KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use generateCsumInet method of csource Package

Best Syzkaller code snippet using csource.generateCsumInet

csource.go

Source:csource.go

...298			case prog.ExecArgCsum:299				switch arg.Kind {300				case prog.ExecArgCsumInet:301					csumSeq++302					ctx.generateCsumInet(w, copyin.Addr, arg, csumSeq)303				default:304					panic(fmt.Sprintf("unknown csum kind %v", arg.Kind))305				}306			default:307				panic(fmt.Sprintf("bad argument type: %+v", arg))308			}309		}310		// Call itself.311		if ctx.opts.Fault && ctx.opts.FaultCall == ci {312			fmt.Fprintf(w, "\twrite_file(\"/sys/kernel/debug/failslab/ignore-gfp-wait\", \"N\");\n")313			fmt.Fprintf(w, "\twrite_file(\"/sys/kernel/debug/fail_futex/ignore-private\", \"N\");\n")314			fmt.Fprintf(w, "\tinject_fault(%v);\n", ctx.opts.FaultNth)315		}316		callName := call.Meta.CallName317		resCopyout := call.Index != prog.ExecNoCopyout318		argCopyout := len(call.Copyout) != 0319		emitCall := ctx.opts.EnableTun || callName != "syz_emit_ethernet" &&320			callName != "syz_extract_tcp_res"321		// TODO: if we don't emit the call we must also not emit copyin, copyout and fault injection.322		// However, simply skipping whole iteration breaks tests due to unused static functions.323		if emitCall {324			native := !strings.HasPrefix(callName, "syz_")325			fmt.Fprintf(w, "\t")326			if resCopyout || argCopyout {327				fmt.Fprintf(w, "res = ")328			}329			if native {330				fmt.Fprintf(w, "syscall(%v%v", ctx.sysTarget.SyscallPrefix, callName)331			} else {332				fmt.Fprintf(w, "%v(", callName)333			}334			for ai, arg := range call.Args {335				if native || ai > 0 {336					fmt.Fprintf(w, ", ")337				}338				switch arg := arg.(type) {339				case prog.ExecArgConst:340					fmt.Fprintf(w, "%v", ctx.constArgToStr(arg))341				case prog.ExecArgResult:342					fmt.Fprintf(w, "%v", ctx.resultArgToStr(arg))343				default:344					panic(fmt.Sprintf("unknown arg type: %+v", arg))345				}346			}347			fmt.Fprintf(w, ");\n")348		}349		// Copyout.350		if resCopyout || argCopyout {351			fmt.Fprintf(w, "\tif (res != -1)")352			copyoutMultiple := len(call.Copyout) > 1 || resCopyout && len(call.Copyout) > 0353			if copyoutMultiple {354				fmt.Fprintf(w, " {")355			}356			fmt.Fprintf(w, "\n")357			if resCopyout {358				fmt.Fprintf(w, "\t\tr[%v] = res;\n", call.Index)359			}360			for _, copyout := range call.Copyout {361				fmt.Fprintf(w, "\t\tNONFAILING(r[%v] = *(uint%v_t*)0x%x);\n",362					copyout.Index, copyout.Size*8, copyout.Addr)363			}364			if copyoutMultiple {365				fmt.Fprintf(w, "\t}\n")366			}367		}368		calls = append(calls, w.String())369	}370	return calls, p.Vars371}372func (ctx *context) generateCsumInet(w *bytes.Buffer, addr uint64, arg prog.ExecArgCsum, csumSeq int) {373	fmt.Fprintf(w, "\tstruct csum_inet csum_%d;\n", csumSeq)374	fmt.Fprintf(w, "\tcsum_inet_init(&csum_%d);\n", csumSeq)375	for i, chunk := range arg.Chunks {376		switch chunk.Kind {377		case prog.ExecArgCsumChunkData:378			fmt.Fprintf(w, "\tNONFAILING(csum_inet_update(&csum_%d, (const uint8_t*)0x%x, %d));\n",379				csumSeq, chunk.Value, chunk.Size)380		case prog.ExecArgCsumChunkConst:381			fmt.Fprintf(w, "\tuint%d_t csum_%d_chunk_%d = 0x%x;\n",382				chunk.Size*8, csumSeq, i, chunk.Value)383			fmt.Fprintf(w, "\tcsum_inet_update(&csum_%d, (const uint8_t*)&csum_%d_chunk_%d, %d);\n",384				csumSeq, csumSeq, i, chunk.Size)385		default:386			panic(fmt.Sprintf("unknown checksum chunk kind %v", chunk.Kind))...

generateCsumInet

Using AI Code Generation

1import (2var (3func main() {4    handle, err = pcap.OpenLive(device, snapshot_len, promiscuous, timeout)5    if err != nil {6        log.Fatal(err)7    }8    defer handle.Close()9    err = handle.SetBPFFilter(filter)10    if err != nil {11        log.Fatal(err)12    }13    fmt.Println("Only capturing TCP port 80 packets.")14    packetSource := gopacket.NewPacketSource(handle, handle.LinkType())15    for packet := range packetSource.Packets() {16        if ethLayer := packet.Layer(layers.LayerTypeEthernet); ethLayer != nil {17            fmt.Println("Ethernet layer detected.")18            eth, _ = ethLayer.(*layers.Ethernet)19            fmt.Println("Source MAC:", eth.SrcMAC)20            fmt.Println("Destination MAC:", eth.DstMAC)21            fmt.Println("Ethernet type:", eth.EthernetType)22            fmt.Println()23        }24        if ipLayer := packet.Layer(layers.LayerTypeIPv4); ipLayer != nil

generateCsumInet

Using AI Code Generation

1import (2func main() {3  fmt.Println(layers.GenerateCsumInet([]byte{0x45, 0x00, 0x00, 0x54, 0x00, 0x00, 0x00, 0x00, 0x40, 0x06, 0x00, 0x00, 0x0a, 0x00, 0x00, 0x01, 0x0a, 0x00, 0x00, 0x02}, 0))4}5import (6func main() {7  fmt.Println(layers.GenerateCsumInet([]byte{0x45, 0x00, 0x00, 0x54, 0x00, 0x00, 0x00, 0x00, 0x40, 0x06, 0x00, 0x00, 0x0a, 0x00, 0x00, 0x01, 0x0a, 0x00, 0x00, 0x02}, 0))8}9import (10func main() {11  fmt.Println(layers.GenerateCsumInet([]byte{0x45, 0x00, 0x00, 0x54, 0x00, 0x00, 0x00, 0x00, 0x40, 0x06, 0x00, 0x00, 0x0a, 0x00, 0x00, 0x01, 0x0a, 0x00, 0x00, 0x02}, 0))12}

generateCsumInet

Using AI Code Generation

1import (2func main() {3	bpfModule := bcc.NewModuleFromSource(csource)4	defer bpfModule.Close()5	kprobe, err := bpfModule.LoadKprobe("kprobe__inet_csk_route_req")6	if err != nil {7		fmt.Fprintf(os.Stderr, "Failed to load kprobe__inet_csk_route_req: %s\n", err)8		os.Exit(1)9	}10	err = bpfModule.AttachKprobe("inet_csk_route_req", kprobe, -1)11	if err != nil {12		fmt.Fprintf(os.Stderr, "Failed to attach kprobe__inet_csk_route_req: %s\n", err)13		os.Exit(1)14	}15	table := bcc.NewTable(bpfModule.TableId("csum_inet"), bpfModule)16	channel := make(chan []byte)17	perfMap, err := bcc.InitPerfMap(table, channel, nil)18	if err != nil {19		fmt.Fprintf(os.Stderr, "Failed to init perf map: %s\n", err)20		os.Exit(1)21	}22	perfMap.Start()23	for {24		csum := *(*uint32)(unsafe.Pointer(&data[0]))25		fmt.Printf("inet_csk_route_req checksum: %x\n", csum)26	}27	perfMap.Stop()28}

generateCsumInet

Using AI Code Generation

1import (2func main() {3	data = []byte{0x45, 0x00, 0x00, 0x54, 0x00, 0x00, 0x40, 0x00, 0x40, 0x11, 0x00, 0x00, 0x0a, 0x00, 0x00, 0x01, 0x0a, 0x00, 0x00, 0x02}4	csum = generateCsumInet(data, 0, len(data))5	fmt.Printf("Checksum is: 0x%x\n", csum)6}7func generateCsumInet(data []byte, offset int, length int) uint16 {8	p = unsafe.Pointer(&data[offset])9	for i = 0; i < length/2; i++ {10		val = *(*uint16)(p)11		csum += uint32(val)12		p = unsafe.Pointer(uintptr(p) + 2)13	}14	if length%2 != 0 {15		val = *(*uint16)(p)16		csum += uint32(val)17	}18	csum = (csum >> 16) + (csum & 0xffff)19	csum += (csum >> 16)20	return uint16(^csum)21}

generateCsumInet

Using AI Code Generation

1import (2func main() {3	handle, err := pcap.OpenLive("enp0s3", 1024, true, 30*time.Second)4	if err != nil {5		log.Fatal(err)6	}7	defer handle.Close()

generateCsumInet

Using AI Code Generation

1import (2import "C"3func main() {4	csource = C.csource_create()5	csum = C.csum_create()6	csum_inet = C.csum_inet_create()7	C.generateCsumInet(&csource, &csum, &csum_inet)8	fmt.Println("csum_inet: ", *(*C.uint16_t)(unsafe.Pointer(&csum_inet)))9}

generateCsumInet

Using AI Code Generation

1import (2func main() {3	csrc := NewCsource()4	csum, err := csrc.GenerateCsumInet(unsafe.Pointer(&[4]byte{1, 2, 3, 4}), 4)5	if err != nil {6		fmt.Println("Error: ", err)7	}8	fmt.Printf("Checksum: %x\n", csum)9}10import (11func main() {12	csrc := NewCsource()13	csum, err := csrc.CsumInet(unsafe.Pointer(&[4]byte{1, 2, 3, 4}), 4)14	if err != nil {15		fmt.Println("Error: ", err)16	}17	fmt.Printf("Checksum: %x\n", csum)18}19import (20func main() {21	csrc := NewCsource()22	csum, err := csrc.CsumInet(unsafe.Pointer(&[]byte{1, 2, 3, 4}[0]), 4)23	if err != nil {24		fmt.Println("Error: ", err)25	}26	fmt.Printf("Checksum: %x\n", csum)27}28import (29func main() {

generateCsumInet

Using AI Code Generation

1import (2func main() {3    var csource = new(csource.Csource)4    var checksum, err = csource.GenerateCsumInet("4500003c8e3a40008006000000000000ffffffff")5    if err == nil {6        fmt.Println(checksum)7    }8    if err != nil {9        fmt.Println(err)10    }11}12import (13func main() {

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.