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How to use generateText method of prog Package

Best Syzkaller code snippet using prog.generateText

rand.go

Source:rand.go

...290	}291	panic(fmt.Sprintf("failed to create a resource %v with %v",292		res.Desc.Kind[0], strings.Join(ctors, ", ")))293}294func (r *randGen) generateText(kind TextKind) []byte {295	switch kind {296	case Text_arm64:297		// Just a stub, need something better.298		text := make([]byte, 50)299		for i := range text {300			text[i] = byte(r.Intn(256))301		}302		return text303	default:304		cfg := createIfuzzConfig(kind)305		return ifuzz.Generate(cfg, r.Rand)306	}307}308func (r *randGen) mutateText(kind TextKind, text []byte) []byte {309	switch kind {310	case Text_arm64:311		return mutateData(r, text, 40, 60)312	default:313		cfg := createIfuzzConfig(kind)314		return ifuzz.Mutate(cfg, r.Rand, text)315	}316}317func createIfuzzConfig(kind TextKind) *ifuzz.Config {318	cfg := &ifuzz.Config{319		Len:  10,320		Priv: true,321		Exec: true,322		MemRegions: []ifuzz.MemRegion{323			{0 << 12, 1 << 12},324			{1 << 12, 1 << 12},325			{2 << 12, 1 << 12},326			{3 << 12, 1 << 12},327			{4 << 12, 1 << 12},328			{5 << 12, 1 << 12},329			{6 << 12, 1 << 12},330			{7 << 12, 1 << 12},331			{8 << 12, 1 << 12},332			{9 << 12, 1 << 12},333			{0xfec00000, 0x100}, // ioapic334		},335	}336	switch kind {337	case Text_x86_real:338		cfg.Mode = ifuzz.ModeReal16339	case Text_x86_16:340		cfg.Mode = ifuzz.ModeProt16341	case Text_x86_32:342		cfg.Mode = ifuzz.ModeProt32343	case Text_x86_64:344		cfg.Mode = ifuzz.ModeLong64345	}346	return cfg347}348// nOutOf returns true n out of outOf times.349func (r *randGen) nOutOf(n, outOf int) bool {350	if n <= 0 || n >= outOf {351		panic("bad probability")352	}353	v := r.Intn(outOf)354	return v < n355}356func (r *randGen) generateCall(s *state, p *Prog) []*Call {357	idx := 0358	if s.ct == nil {359		idx = r.Intn(len(r.target.Syscalls))360	} else {361		call := -1362		if len(p.Calls) != 0 {363			call = p.Calls[r.Intn(len(p.Calls))].Meta.ID364		}365		idx = s.ct.Choose(r.Rand, call)366	}367	meta := r.target.Syscalls[idx]368	return r.generateParticularCall(s, meta)369}370func (r *randGen) generateParticularCall(s *state, meta *Syscall) (calls []*Call) {371	c := &Call{372		Meta: meta,373		Ret:  MakeReturnArg(meta.Ret),374	}375	c.Args, calls = r.generateArgs(s, meta.Args)376	r.target.assignSizesCall(c)377	calls = append(calls, c)378	for _, c1 := range calls {379		r.target.SanitizeCall(c1)380	}381	return calls382}383// GenerateAllSyzProg generates a program that contains all pseudo syz_ calls for testing.384func (target *Target) GenerateAllSyzProg(rs rand.Source) *Prog {385	p := &Prog{386		Target: target,387	}388	r := newRand(target, rs)389	s := newState(target, nil)390	handled := make(map[string]bool)391	for _, meta := range target.Syscalls {392		if !strings.HasPrefix(meta.CallName, "syz_") || handled[meta.CallName] {393			continue394		}395		handled[meta.CallName] = true396		calls := r.generateParticularCall(s, meta)397		for _, c := range calls {398			s.analyze(c)399			p.Calls = append(p.Calls, c)400		}401	}402	if err := p.validate(); err != nil {403		panic(err)404	}405	return p406}407// GenerateSimpleProg generates the simplest non-empty program for testing408// (e.g. containing a single mmap).409func (target *Target) GenerateSimpleProg() *Prog {410	return &Prog{411		Target: target,412		Calls:  []*Call{target.MakeMmap(0, target.PageSize)},413	}414}415func (target *Target) GenerateUberMmapProg() *Prog {416	return &Prog{417		Target: target,418		Calls:  []*Call{target.MakeMmap(0, target.NumPages*target.PageSize)},419	}420}421func (r *randGen) generateArgs(s *state, types []Type) ([]Arg, []*Call) {422	var calls []*Call423	args := make([]Arg, len(types))424	// Generate all args. Size args have the default value 0 for now.425	for i, typ := range types {426		arg, calls1 := r.generateArg(s, typ)427		if arg == nil {428			panic(fmt.Sprintf("generated arg is nil for type '%v', types: %+v", typ.Name(), types))429		}430		args[i] = arg431		calls = append(calls, calls1...)432	}433	return args, calls434}435func (r *randGen) generateArg(s *state, typ Type) (arg Arg, calls []*Call) {436	return r.generateArgImpl(s, typ, false)437}438func (r *randGen) generateArgImpl(s *state, typ Type, ignoreSpecial bool) (arg Arg, calls []*Call) {439	if typ.Dir() == DirOut {440		// No need to generate something interesting for output scalar arguments.441		// But we still need to generate the argument itself so that it can be referenced442		// in subsequent calls. For the same reason we do generate pointer/array/struct443		// output arguments (their elements can be referenced in subsequent calls).444		switch typ.(type) {445		case *IntType, *FlagsType, *ConstType, *ProcType,446			*VmaType, *ResourceType:447			return r.target.defaultArg(typ), nil448		}449	}450	if typ.Optional() && r.oneOf(5) {451		return r.target.defaultArg(typ), nil452	}453	// Allow infinite recursion for optional pointers.454	if pt, ok := typ.(*PtrType); ok && typ.Optional() {455		switch pt.Type.(type) {456		case *StructType, *ArrayType, *UnionType:457			name := pt.Type.Name()458			r.recDepth[name]++459			defer func() {460				r.recDepth[name]--461				if r.recDepth[name] == 0 {462					delete(r.recDepth, name)463				}464			}()465			if r.recDepth[name] >= 3 {466				return MakeNullPointerArg(typ), nil467			}468		}469	}470	switch a := typ.(type) {471	case *ResourceType:472		switch {473		case r.nOutOf(1000, 1011):474			// Get an existing resource.475			var allres []Arg476			for name1, res1 := range s.resources {477				if name1 == "iocbptr" {478					continue479				}480				if r.target.isCompatibleResource(a.Desc.Name, name1) ||481					r.oneOf(20) && r.target.isCompatibleResource(a.Desc.Kind[0], name1) {482					allres = append(allres, res1...)483				}484			}485			if len(allres) != 0 {486				arg = MakeResultArg(a, allres[r.Intn(len(allres))], 0)487			} else {488				arg, calls = r.createResource(s, a)489			}490		case r.nOutOf(10, 11):491			// Create a new resource.492			arg, calls = r.createResource(s, a)493		default:494			special := a.SpecialValues()495			arg = MakeResultArg(a, nil, special[r.Intn(len(special))])496		}497		return arg, calls498	case *BufferType:499		switch a.Kind {500		case BufferBlobRand, BufferBlobRange:501			sz := r.randBufLen()502			if a.Kind == BufferBlobRange {503				sz = r.randRange(a.RangeBegin, a.RangeEnd)504			}505			if a.Dir() == DirOut {506				return MakeOutDataArg(a, sz), nil507			}508			data := make([]byte, sz)509			for i := range data {510				data[i] = byte(r.Intn(256))511			}512			return MakeDataArg(a, data), nil513		case BufferString:514			data := r.randString(s, a)515			if a.Dir() == DirOut {516				return MakeOutDataArg(a, uint64(len(data))), nil517			}518			return MakeDataArg(a, data), nil519		case BufferFilename:520			if a.Dir() == DirOut {521				var sz uint64522				switch {523				case !a.Varlen():524					sz = a.Size()525				case r.nOutOf(1, 3):526					sz = r.rand(100)527				case r.nOutOf(1, 2):528					sz = 108 // UNIX_PATH_MAX529				default:530					sz = 4096 // PATH_MAX531				}532				return MakeOutDataArg(a, sz), nil533			}534			return MakeDataArg(a, []byte(r.filename(s, a))), nil535		case BufferText:536			if a.Dir() == DirOut {537				return MakeOutDataArg(a, uint64(r.Intn(100))), nil538			}539			return MakeDataArg(a, r.generateText(a.Text)), nil540		default:541			panic("unknown buffer kind")542		}543	case *VmaType:544		npages := r.randPageCount()545		if a.RangeBegin != 0 || a.RangeEnd != 0 {546			npages = a.RangeBegin + uint64(r.Intn(int(a.RangeEnd-a.RangeBegin+1)))547		}548		arg := r.allocVMA(s, a, npages)549		return arg, nil550	case *FlagsType:551		return MakeConstArg(a, r.flags(a.Vals)), nil552	case *ConstType:553		return MakeConstArg(a, a.Val), nil...

generateText

Using AI Code Generation

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

generateText

Using AI Code Generation

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

generateText

Using AI Code Generation

1import "fmt"2func main() {3    p := prog{}4    p.generateText()5}6import "fmt"7type prog struct {8}9func (p prog) generateText() {10    fmt.Println("Hello, World!")11}

generateText

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello, playground")4    p := new(prog)5    p.generateText()6}7import (8type prog struct {9}10func (p *prog) generateText() {11    fmt.Println("Hello, playground")12}

generateText

Using AI Code Generation

1import "fmt"2import "github.com/GoLangTraining/02_package/stringutil"3func main() {4fmt.Println(stringutil.Reverse("!oG ,olleH"))5fmt.Println(stringutil.MyName)6}

generateText

Using AI Code Generation

1import (2func main() {3    p := prog{}4    file, err := os.Open("1.txt")5    if err != nil {6        fmt.Println(err)7    }8    defer file.Close()9    scanner := bufio.NewScanner(file)10    for scanner.Scan() {11        p.generateText(scanner.Text())12    }13    if err := scanner.Err(); err != nil {14        fmt.Println(err)15    }16}17import (18type prog struct {19}20func (p *prog) generateText(s string) {21    p.m = make(map[string]string)22    arr := strings.Split(s, " ")23    for _, v := range arr {24        keyVal := strings.Split(v, "=")25    }26    fmt.Println(p.m)27}28import (29func main() {30    p := prog{}31    file, err := os.Open("1.txt")32    if err != nil {33        fmt.Println(err)34    }35    defer file.Close()36    scanner := bufio.NewScanner(file)37    for scanner.Scan() {38        p.generateText(scanner.Text())39    }40    if err := scanner.Err(); err != nil

generateText

Using AI Code Generation

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

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