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How to use genPtr method of proggen Package

Best Syzkaller code snippet using proggen.genPtr

proggen.go

Source:proggen.go

...154		return ctx.parseProc(a, dir, traceArg)155	case *prog.ResourceType: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			fldDir := syzType.Fields[i].Dir(dir)203			if prog.IsPad(syzType.Fields[i].Type) {204				args = append(args, syzType.Fields[i].DefaultArg(fldDir))205				continue206			}207			// If the last n fields of a struct are zero or NULL, strace will occasionally omit those values208			// this creates a mismatch in the number of elements in the ir type and in209			// our descriptions. We generate default values for omitted fields210			if j >= len(a.Elems) {211				args = append(args, syzType.Fields[i].DefaultArg(fldDir))212			} else {213				args = append(args, ctx.genArg(syzType.Fields[i].Type, fldDir, a.Elems[j]))214			}215			j++216		}217	case *parser.BufferType:218		// We could have a case like the following:219		// ioctl(3, 35111, {ifr_name="\x6c\x6f", ifr_hwaddr=00:00:00:00:00:00}) = 0220		// if_hwaddr gets parsed as a BufferType but our syscall descriptions have it as a struct type221		return syzType.DefaultArg(dir)222	default:223		log.Fatalf("unsupported type for struct: %#v", a)224	}225	return prog.MakeGroupArg(syzType, dir, args)226}227// recurseStructs handles cases where syzType corresponds to struct descriptions like228// sockaddr_storage_in6 {229//        addr    sockaddr_in6230// } [size[SOCKADDR_STORAGE_SIZE], align_ptr]231// which need to be recursively generated. It returns true if we needed to recurse232// along with the generated argument and false otherwise.233func (ctx *context) recurseStructs(syzType *prog.StructType, dir prog.Dir, traceType *parser.GroupType) (prog.Arg, bool) {234	// only consider structs with one non-padded field235	numFields := 0236	for _, field := range syzType.Fields {237		if prog.IsPad(field.Type) {238			continue239		}240		numFields++241	}242	if numFields != 1 {243		return nil, false244	}245	// the strace group type needs to have more one field (a mismatch)246	if len(traceType.Elems) == 1 {247		return nil, false248	}249	// first field needs to be a struct250	switch t := syzType.Fields[0].Type.(type) {251	case *prog.StructType:252		var args []prog.Arg253		// first element and traceType should have the same number of elements254		if len(t.Fields) != len(traceType.Elems) {255			return nil, false256		}257		args = append(args, ctx.genStruct(t, dir, traceType))258		for _, field := range syzType.Fields[1:] {259			args = append(args, field.DefaultArg(field.Dir(dir)))260		}261		return prog.MakeGroupArg(syzType, dir, args), true262	}263	return nil, false264}265func (ctx *context) genUnionArg(syzType *prog.UnionType, dir prog.Dir, straceType parser.IrType) prog.Arg {266	if straceType == nil {267		log.Logf(1, "generating union arg. straceType is nil")268		return syzType.DefaultArg(dir)269	}270	log.Logf(4, "generating union arg: %s %#v", syzType.TypeName, straceType)271	// Unions are super annoying because they sometimes need to be handled case by case272	// We might need to lookinto a matching algorithm to identify the union type that most closely273	// matches our strace type.274	switch syzType.TypeName {275	case "sockaddr_storage":276		return ctx.genSockaddrStorage(syzType, dir, straceType)277	case "sockaddr_nl":278		return ctx.genSockaddrNetlink(syzType, dir, straceType)279	case "ifr_ifru":280		return ctx.genIfrIfru(syzType, dir, straceType)281	}282	return prog.MakeUnionArg(syzType, dir, ctx.genArg(syzType.Fields[0].Type, syzType.Fields[0].Dir(dir), straceType), 0)283}284func (ctx *context) genBuffer(syzType *prog.BufferType, dir prog.Dir, traceType parser.IrType) prog.Arg {285	if dir == prog.DirOut {286		if !syzType.Varlen() {287			return prog.MakeOutDataArg(syzType, dir, syzType.Size())288		}289		switch a := traceType.(type) {290		case *parser.BufferType:291			return prog.MakeOutDataArg(syzType, dir, uint64(len(a.Val)))292		default:293			switch syzType.Kind {294			case prog.BufferBlobRand:295				size := rand.Intn(256)296				return prog.MakeOutDataArg(syzType, dir, uint64(size))297			case prog.BufferBlobRange:298				max := rand.Intn(int(syzType.RangeEnd) - int(syzType.RangeBegin) + 1)299				size := max + int(syzType.RangeBegin)300				return prog.MakeOutDataArg(syzType, dir, uint64(size))301			default:302				log.Fatalf("unexpected buffer type kind: %v. call %v arg %#v", syzType.Kind, ctx.currentSyzCall, traceType)303			}304		}305	}306	var bufVal []byte307	switch a := traceType.(type) {308	case *parser.BufferType:309		bufVal = []byte(a.Val)310	case parser.Constant:311		val := a.Val()312		bArr := make([]byte, 8)313		binary.LittleEndian.PutUint64(bArr, val)314		bufVal = bArr315	default:316		log.Fatalf("unsupported type for buffer: %#v", traceType)317	}318	// strace always drops the null byte for buffer types but we only need to add it back for filenames and strings319	switch syzType.Kind {320	case prog.BufferFilename, prog.BufferString:321		bufVal = append(bufVal, '\x00')322	}323	if !syzType.Varlen() {324		size := syzType.Size()325		for uint64(len(bufVal)) < size {326			bufVal = append(bufVal, 0)327		}328		bufVal = bufVal[:size]329	}330	return prog.MakeDataArg(syzType, dir, bufVal)331}332func (ctx *context) genPtr(syzType *prog.PtrType, dir prog.Dir, traceType parser.IrType) prog.Arg {333	switch a := traceType.(type) {334	case parser.Constant:335		if a.Val() == 0 {336			return prog.MakeSpecialPointerArg(syzType, dir, 0)337		}338		// Likely have a type of the form bind(3, 0xfffffffff, [3]);339		res := syzType.Elem.DefaultArg(syzType.ElemDir)340		return ctx.addr(syzType, dir, res.Size(), res)341	default:342		res := ctx.genArg(syzType.Elem, syzType.ElemDir, a)343		return ctx.addr(syzType, dir, res.Size(), res)344	}345}346func (ctx *context) genConst(syzType prog.Type, dir prog.Dir, traceType parser.IrType) prog.Arg {...

genPtr

Using AI Code Generation

1import (2func main() {3    if len(os.Args) != 2 {4        fmt.Println("Usage: ", os.Args[0], "count")5        os.Exit(1)6    }7    count, _ := strconv.Atoi(os.Args[1])8    proggen := new(ProgGen)9    for i := 0; i < count; i++ {10        fmt.Println(proggen.genPtr())11    }12}13import "fmt"14func main() {15}16import "fmt"17func main() {18}19import "fmt"20func main() {21}

genPtr

Using AI Code Generation

1import (2func main() {3	proggen.GenPtr()4}5import (6type proggen struct {7}8func GenPtr() {9	var p *proggen = new(proggen)10	fmt.Println("Pointer generated")11	p.genProg()12}13func (p *proggen) genProg() {14	fmt.Println("Program generated")15	p.runProg()16}17func (p *proggen) runProg() {18	fmt.Println("Program running")19	p.delProg()20}21func (p *proggen) delProg() {22	fmt.Println("Program deleted")23	p.delPtr()24}25func (p *proggen) delPtr() {26	fmt.Println("Pointer deleted")27	p.delFile()28}29func (p *proggen) delFile() {30	err := os.Remove("2.go")31	if err != nil {32		fmt.Println(err)33	}34	fmt.Println("File deleted")35	p.delDir()36}37func (p *proggen) delDir() {38	cmd := exec.Command("rmdir", "proggen")39	cmd.Run()40	fmt.Println("Directory deleted")41}

genPtr

Using AI Code Generation

1import (2func main() {3	p := proggen.ProgGen{}4	p.GenPtr()5	fmt.Println("Program generated")6}7import (8func main() {9	p := proggen.ProgGen{}10	p.GenPtr()11	fmt.Println("Program generated")12}13import (14func main() {15	p := proggen.ProgGen{}16	p.GenPtr()17	fmt.Println("Program generated")18}19import (20func main() {21	p := proggen.ProgGen{}22	p.GenPtr()23	fmt.Println("Program generated")24}25import (26func main() {27	p := proggen.ProgGen{}28	p.GenPtr()29	fmt.Println("Program generated")30}31import (32func main() {33	p := proggen.ProgGen{}34	p.GenPtr()35	fmt.Println("Program generated")36}37import (38func main() {39	p := proggen.ProgGen{}40	p.GenPtr()41	fmt.Println("Program generated")42}43import (44func main() {45	p := proggen.ProgGen{}46	p.GenPtr()47	fmt.Println("Program generated")48}49import (50func main() {51	p := proggen.ProgGen{}52	p.GenPtr()53	fmt.Println("Program generated")54}

genPtr

Using AI Code Generation

1int main()2{3 proggen p;4 int *ptr;5 ptr = p.genPtr();6 cout << *ptr;7 return 0;8}

genPtr

Using AI Code Generation

1import (2func main() {3	g.GenPtr()4	fmt.Println(g)5}6import (7type ProgGen struct {8}9func (g *ProgGen) GenPtr() {10	rand.Seed(time.Now().UnixNano())11	g.prog = make([]string, 10)12	for i := 0; i < 10; i++ {13		g.prog[i] = fmt.Sprintf("%d", rand.Intn(100))14	}15}16func (g ProgGen) Gen() {17	rand.Seed(time.Now().UnixNano())18	g.prog = make([]string, 10)19	for i := 0; i < 10; i++ {20		g.prog[i] = fmt.Sprintf("%d", rand.Intn(100))21	}22}23func (g ProgGen) String() string {24	return fmt.Sprintf("%v", g.prog)25}

genPtr

Using AI Code Generation

1import "fmt"2func main() {3    fmt.Println(*p)4}5import "fmt"6func main() {7    fmt.Println(*p)8}9import "fmt"10func main() {11    fmt.Println(*p)12}13import "fmt"14func main() {15    fmt.Println(*p)16}17import "fmt"18func main() {19    fmt.Println(*p)20}21import "fmt"22func main() {23    fmt.Println(*p)24}25import "fmt"26func main() {27    fmt.Println(*p)28}29import "fmt"30func main() {31    fmt.Println(*p)32}

genPtr

Using AI Code Generation

1import "fmt"2import "github.com/raff/godet"3func main() {4    var p *program = pg.genPtr()5    fmt.Println(p)6    gd.Connect("localhost:9222")7    gd.NewTab("")8    gd.Close()9}10import "fmt"11import "github.com/raff/godet"12func main() {13    var p *program = pg.genPtr()14    fmt.Println(p)15    gd.Connect("localhost:9222")16    gd.NewTab("")17    gd.Close()18}19import "fmt"20import "github.com/raff/godet"21func main() {22    var p *program = pg.genPtr()23    fmt.Println(p)24    gd.Connect("localhost:9222")

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