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How to use genBuffer method of proggen Package

Best Syzkaller code snippet using proggen.genBuffer

proggen.go

Source:proggen.go

...156		return ctx.genResource(a, dir, traceArg)157	case *prog.PtrType:158		return ctx.genPtr(a, dir, traceArg)159	case *prog.BufferType:160		return ctx.genBuffer(a, dir, traceArg)161	case *prog.StructType:162		return ctx.genStruct(a, dir, traceArg)163	case *prog.ArrayType:164		return ctx.genArray(a, dir, traceArg)165	case *prog.UnionType:166		return ctx.genUnionArg(a, dir, traceArg)167	case *prog.VmaType:168		return ctx.genVma(a, dir, traceArg)169	default:170		log.Fatalf("unsupported type: %#v", syzType)171	}172	return nil173}174func (ctx *context) genVma(syzType *prog.VmaType, dir prog.Dir, _ parser.IrType) prog.Arg {175	npages := uint64(1)176	if syzType.RangeBegin != 0 || syzType.RangeEnd != 0 {177		npages = syzType.RangeEnd178	}179	return prog.MakeVmaPointerArg(syzType, dir, ctx.builder.AllocateVMA(npages), npages)180}181func (ctx *context) genArray(syzType *prog.ArrayType, dir prog.Dir, traceType parser.IrType) prog.Arg {182	var args []prog.Arg183	switch a := traceType.(type) {184	case *parser.GroupType:185		for i := 0; i < len(a.Elems); i++ {186			args = append(args, ctx.genArg(syzType.Elem, dir, a.Elems[i]))187		}188	default:189		log.Fatalf("unsupported type for array: %#v", traceType)190	}191	return prog.MakeGroupArg(syzType, dir, args)192}193func (ctx *context) genStruct(syzType *prog.StructType, dir prog.Dir, traceType parser.IrType) prog.Arg {194	var args []prog.Arg195	switch a := traceType.(type) {196	case *parser.GroupType:197		j := 0198		if ret, recursed := ctx.recurseStructs(syzType, dir, a); recursed {199			return ret200		}201		for i := range syzType.Fields {202			if prog.IsPad(syzType.Fields[i].Type) {203				args = append(args, syzType.Fields[i].DefaultArg(dir))204				continue205			}206			// If the last n fields of a struct are zero or NULL, strace will occasionally omit those values207			// this creates a mismatch in the number of elements in the ir type and in208			// our descriptions. We generate default values for omitted fields209			if j >= len(a.Elems) {210				args = append(args, syzType.Fields[i].DefaultArg(dir))211			} else {212				args = append(args, ctx.genArg(syzType.Fields[i].Type, dir, a.Elems[j]))213			}214			j++215		}216	case *parser.BufferType:217		// We could have a case like the following:218		// ioctl(3, 35111, {ifr_name="\x6c\x6f", ifr_hwaddr=00:00:00:00:00:00}) = 0219		// if_hwaddr gets parsed as a BufferType but our syscall descriptions have it as a struct type220		return syzType.DefaultArg(dir)221	default:222		log.Fatalf("unsupported type for struct: %#v", a)223	}224	return prog.MakeGroupArg(syzType, dir, args)225}226// recurseStructs handles cases where syzType corresponds to struct descriptions like227// sockaddr_storage_in6 {228//        addr    sockaddr_in6229// } [size[SOCKADDR_STORAGE_SIZE], align_ptr]230// which need to be recursively generated. It returns true if we needed to recurse231// along with the generated argument and false otherwise.232func (ctx *context) recurseStructs(syzType *prog.StructType, dir prog.Dir, traceType *parser.GroupType) (prog.Arg, bool) {233	// only consider structs with one non-padded field234	numFields := 0235	for _, field := range syzType.Fields {236		if prog.IsPad(field.Type) {237			continue238		}239		numFields++240	}241	if numFields != 1 {242		return nil, false243	}244	// the strace group type needs to have more one field (a mismatch)245	if len(traceType.Elems) == 1 {246		return nil, false247	}248	// first field needs to be a struct249	switch t := syzType.Fields[0].Type.(type) {250	case *prog.StructType:251		var args []prog.Arg252		// first element and traceType should have the same number of elements253		if len(t.Fields) != len(traceType.Elems) {254			return nil, false255		}256		args = append(args, ctx.genStruct(t, dir, traceType))257		for _, field := range syzType.Fields[1:] {258			args = append(args, field.DefaultArg(dir))259		}260		return prog.MakeGroupArg(syzType, dir, args), true261	}262	return nil, false263}264func (ctx *context) genUnionArg(syzType *prog.UnionType, dir prog.Dir, straceType parser.IrType) prog.Arg {265	if straceType == nil {266		log.Logf(1, "generating union arg. straceType is nil")267		return syzType.DefaultArg(dir)268	}269	log.Logf(4, "generating union arg: %s %#v", syzType.TypeName, straceType)270	// Unions are super annoying because they sometimes need to be handled case by case271	// We might need to lookinto a matching algorithm to identify the union type that most closely272	// matches our strace type.273	switch syzType.TypeName {274	case "sockaddr_storage":275		return ctx.genSockaddrStorage(syzType, dir, straceType)276	case "sockaddr_nl":277		return ctx.genSockaddrNetlink(syzType, dir, straceType)278	case "ifr_ifru":279		return ctx.genIfrIfru(syzType, dir, straceType)280	}281	return prog.MakeUnionArg(syzType, dir, ctx.genArg(syzType.Fields[0].Type, dir, straceType), 0)282}283func (ctx *context) genBuffer(syzType *prog.BufferType, dir prog.Dir, traceType parser.IrType) prog.Arg {284	if dir == prog.DirOut {285		if !syzType.Varlen() {286			return prog.MakeOutDataArg(syzType, dir, syzType.Size())287		}288		switch a := traceType.(type) {289		case *parser.BufferType:290			return prog.MakeOutDataArg(syzType, dir, uint64(len(a.Val)))291		default:292			switch syzType.Kind {293			case prog.BufferBlobRand:294				size := rand.Intn(256)295				return prog.MakeOutDataArg(syzType, dir, uint64(size))296			case prog.BufferBlobRange:297				max := rand.Intn(int(syzType.RangeEnd) - int(syzType.RangeBegin) + 1)...

genBuffer

Using AI Code Generation

1import "fmt"2import "proggen"3func main() {4    fmt.Println(proggen.genBuffer())5}6import "fmt"7import "math/rand"8import "time"9func genBuffer() string {10    rand.Seed(time.Now().UnixNano())11    for i := 0; i < 128; i++ {12        buffer[i] = byte(rand.Intn(25) + 65)13    }14    return fmt.Sprintf("%s", buffer)15}

genBuffer

Using AI Code Generation

1import (2func main() {3	fmt.Println("main")4	proggen.GenBuffer()5}6import (7func GenBuffer() {8	fmt.Println("GenBuffer")9}10import (11func GenBuffer() {12	fmt.Println("GenBuffer")13}14import (15func GenBuffer() {16	fmt.Println("GenBuffer")17}18import (19func GenBuffer() {20	fmt.Println("GenBuffer")21}22import (23func GenBuffer() {24	fmt.Println("GenBuffer")25}26import (27func GenBuffer() {28	fmt.Println("GenBuffer")29}30import (31func GenBuffer() {32	fmt.Println("GenBuffer")33}34import (35func GenBuffer() {36	fmt.Println("GenBuffer")37}38import (39func GenBuffer() {40	fmt.Println("GenBuffer")41}42import (43func GenBuffer() {44	fmt.Println("GenBuffer")45}46import (47func GenBuffer() {48	fmt.Println("GenBuffer")49}50import (51func GenBuffer() {52	fmt.Println("GenBuffer")53}54import (55func GenBuffer() {56	fmt.Println("GenBuffer")57}58import (59func GenBuffer() {60	fmt.Println("GenBuffer")61}62import (63func GenBuffer() {64	fmt.Println("GenBuffer")65}

genBuffer

Using AI Code Generation

1import (2func main() {3	p := proggen.NewProgGen()4	p.GenBuffer()5	fmt.Println(p)6}7import (8type ProgGen struct {9}10func NewProgGen() *ProgGen {11	return &ProgGen{}12}13func (p *ProgGen) GenBuffer() {14	p.prog = fmt.Sprintf("package main15import (16func main() {17	p := proggen.NewProgGen()18	p.GenBuffer()19	fmt.Println(p)20}21}22func (p *ProgGen) String() string {23}

genBuffer

Using AI Code Generation

1import (2func main() {3    pgm.GenBuffer()4    fmt.Println(pgm.Buff)5}6import (7func main() {8    pgm.GenBuffer()9    fmt.Println(pgm.Buffer())10}11import (12func main() {13    pgm.GenBuffer()14    fmt.Println(pgm.Buffer())15}16import (17func main() {18    pgm.GenBuffer()19    fmt.Println(pgm.Buffer())20}

genBuffer

Using AI Code Generation

1import (2func main() {3    proggen.GenBuffer()4    fmt.Println("Buffer Generated")5}6import (7func GenBuffer() {8    buf := make([]byte, 1024)9    file, err := os.Create("buffer.txt")10    if err != nil {11        fmt.Println("Error in creating file")12    }13    _, err = file.Write(buf)14    if err != nil {15        fmt.Println("Error in writing buffer to file")16    }17    file.Close()18}

genBuffer

Using AI Code Generation

1public class 2 {2    public static void main(String[] args) {3        proggen p = new proggen();4        String[] program = p.genBuffer(100);5        for (int i = 0; i < program.length; i++) {6            System.out.println(program[i]);7        }8    }9}10import (11func main() {12    p := proggen{}13    program := p.genBuffer(100)14    for i := 0; i < len(program); i++ {15        fmt.Println(program[i])16    }17}18import (19func main() {20    p := proggen{}21    program := p.genBuffer(100)22    for i := 0; i < len(program); i++ {23        fmt.Println(program[i])24    }25}26import (27func main() {28    p := proggen{}29    program := p.genBuffer(100)30    for i := 0; i < len(program); i++ {31        fmt.Println(program[i])32    }33}34import (35func main() {36    p := proggen{}37    program := p.genBuffer(100)38    for i := 0; i < len(program); i++ {39        fmt.Println(program[i])40    }41}42import (43func main() {

genBuffer

Using AI Code Generation

1import (2func main() {3	if len(os.Args) != 3 {4		fmt.Println("Usage: 2.go <length> <filename>")5		os.Exit(1)6	}7	length, err := strconv.Atoi(os.Args[1])8	if err != nil {9		fmt.Println("Invalid length")10		os.Exit(1)11	}12	buffer := proggen.GenBuffer(length)13	file, err := os.Create(filename)14	if err != nil {15		fmt.Println("Error creating file")16		os.Exit(1)17	}18	defer file.Close()19	file.Write(buffer)20}21import (22func GenRandomNumber() byte {23	rand.Seed(time.Now().UnixNano())24	return byte(rand.Intn(256))25}26import (27func GenBuffer(length int) []byte {28	buffer := make([]byte, length)29	for i := 0; i < length; i++ {30		buffer[i] = GenRandomNumber()31	}32}

genBuffer

Using AI Code Generation

1proggen pg;2byte[] buffer;3buffer = pg.genBuffer(10);4FileOutputStream fos;5File file = new File("myFile.txt");6fos = new FileOutputStream(file);7fos.write(buffer);8fos.close();

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