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How to use genResource method of proggen Package

Best Syzkaller code snippet using proggen.genResource

proggen.go

Source:proggen.go

...152		return syzType.DefaultArg(dir)153	case *prog.ProcType: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			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)298				size := max + int(syzType.RangeBegin)299				return prog.MakeOutDataArg(syzType, dir, uint64(size))300			default:301				log.Fatalf("unexpected buffer type kind: %v. call %v arg %#v", syzType.Kind, ctx.currentSyzCall, traceType)302			}303		}304	}305	var bufVal []byte306	switch a := traceType.(type) {307	case *parser.BufferType:308		bufVal = []byte(a.Val)309	case parser.Constant:310		val := a.Val()311		bArr := make([]byte, 8)312		binary.LittleEndian.PutUint64(bArr, val)313		bufVal = bArr314	default:315		log.Fatalf("unsupported type for buffer: %#v", traceType)316	}317	// strace always drops the null byte for buffer types but we only need to add it back for filenames and strings318	switch syzType.Kind {319	case prog.BufferFilename, prog.BufferString:320		bufVal = append(bufVal, '\x00')321	}322	if !syzType.Varlen() {323		size := syzType.Size()324		for uint64(len(bufVal)) < size {325			bufVal = append(bufVal, 0)326		}327		bufVal = bufVal[:size]328	}329	return prog.MakeDataArg(syzType, dir, bufVal)330}331func (ctx *context) genPtr(syzType *prog.PtrType, dir prog.Dir, traceType parser.IrType) prog.Arg {332	switch a := traceType.(type) {333	case parser.Constant:334		if a.Val() == 0 {335			return prog.MakeSpecialPointerArg(syzType, dir, 0)336		}337		// Likely have a type of the form bind(3, 0xfffffffff, [3]);338		res := syzType.Elem.DefaultArg(syzType.ElemDir)339		return ctx.addr(syzType, dir, res.Size(), res)340	default:341		res := ctx.genArg(syzType.Elem, syzType.ElemDir, a)342		return ctx.addr(syzType, dir, res.Size(), res)343	}344}345func (ctx *context) genConst(syzType prog.Type, dir prog.Dir, traceType parser.IrType) prog.Arg {346	switch a := traceType.(type) {347	case parser.Constant:348		return prog.MakeConstArg(syzType, dir, a.Val())349	case *parser.GroupType:350		// Sometimes strace represents a pointer to int as [0] which gets parsed351		// as Array([0], len=1). A good example is ioctl(3, FIONBIO, [1]). We may also have an union int type that352		// is a represented as a struct in strace e.g.353		// sigev_value={sival_int=-2123636944, sival_ptr=0x7ffd816bdf30}354		// For now we choose the first option355		if len(a.Elems) == 0 {356			log.Logf(2, "parsing const type, got array type with len 0")357			return syzType.DefaultArg(dir)358		}359		return ctx.genConst(syzType, dir, a.Elems[0])360	case *parser.BufferType:361		// strace decodes some arguments as hex strings because those values are network ordered362		// e.g. sin_port or sin_addr fields of sockaddr_in.363		// network order is big endian byte order so if the len of byte array is 1, 2, 4, or 8 then364		// it is a good chance that we are decoding one of those fields. If it isn't, then most likely365		// we have an error i.e. a sockaddr_un struct passed to a connect call with an inet file descriptor366		var val uint64367		toUint64 := binary.LittleEndian.Uint64368		toUint32 := binary.LittleEndian.Uint32369		toUint16 := binary.LittleEndian.Uint16370		if syzType.Format() == prog.FormatBigEndian {371			toUint64 = binary.BigEndian.Uint64372			toUint32 = binary.BigEndian.Uint32373			toUint16 = binary.BigEndian.Uint16374		}375		switch len(a.Val) {376		case 8:377			val = toUint64([]byte(a.Val))378		case 4:379			val = uint64(toUint32([]byte(a.Val)))380		case 2:381			val = uint64(toUint16([]byte(a.Val)))382		case 1:383			val = uint64(a.Val[0])384		default:385			return syzType.DefaultArg(dir)386		}387		return prog.MakeConstArg(syzType, dir, val)388	default:389		log.Fatalf("unsupported type for const: %#v", traceType)390	}391	return nil392}393func (ctx *context) genResource(syzType *prog.ResourceType, dir prog.Dir, traceType parser.IrType) prog.Arg {394	if dir == prog.DirOut {395		log.Logf(2, "resource returned by call argument: %s", traceType.String())396		res := prog.MakeResultArg(syzType, dir, nil, syzType.Default())397		ctx.returnCache.cache(syzType, traceType, res)398		return res399	}400	switch a := traceType.(type) {401	case parser.Constant:402		val := a.Val()403		if arg := ctx.returnCache.get(syzType, traceType); arg != nil {404			res := prog.MakeResultArg(syzType, dir, arg.(*prog.ResultArg), syzType.Default())405			return res406		}407		res := prog.MakeResultArg(syzType, dir, nil, val)...

genResource

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello, 世界")4    os.Exit(0)5}6import (7func main() {8    fmt.Println("Hello, 世界")9    os.Exit(0)10}11import (12func main() {13    fmt.Println("Hello, 世界")14    os.Exit(0)15}16import (17func main() {18    fmt.Println("Hello, 世界")19    os.Exit(0)20}21import (22func main() {23    fmt.Println("Hello, 世界")24    os.Exit(0)25}26import (27func main() {28    fmt.Println("Hello, 世界")29    os.Exit(0)30}31import (32func main() {33    fmt.Println("Hello, 世界")34    os.Exit(0)35}36import (37func main() {38    fmt.Println("Hello, 世界")39    os.Exit(

genResource

Using AI Code Generation

1import (2func main() {3	p := gen.ProgGen{}4	p.GenResource()5	fmt.Println("Done")6}7import (8type ProgGen struct {9}10func (p *ProgGen) GenResource() {11	fmt.Println("Generating resource")12}

genResource

Using AI Code Generation

1import (2func main() {3    pg.Init()4    pg.GenResource()5}6import (7type ProgGen struct {8}9func (pg *ProgGen) Init() {10}11func (pg *ProgGen) GenResource() {12    fmt.Println(pg.Resource)13}14    /usr/local/go/src/github.com/ymcvalu/ProgGen (from $GOROOT)15    /home/ymcvalu/go/src/github.com/ymcvalu/ProgGen (from $GOPATH)16    /usr/local/go/src/github.com/ymcvalu/ProgGen (from $GOROOT)

genResource

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello, playground")4    resource = proggen.genResource()5    fmt.Println("resource is ", resource)6    resourceFile, err := os.Create("resource.txt")7    if err != nil {8        fmt.Println("Error creating resource file")9    }10    resourceFile.WriteString(resource)11    resourceFile.Close()12}13import (14type proggen struct {15}16func (pg proggen) genResource() string {17    rand.Seed(time.Now().UTC().UnixNano())18    randNum = rand.Intn(100)19    if randNum%2 == 0 {20    } else {21    }22}23func main() {24    fmt.Println("Hello, playground")25    resource = proggen.genResource()26    fmt.Println("resource is ", resource)27}28cmd := exec.Command("ls", "-l")29out, err := cmd.Output()30import (

genResource

Using AI Code Generation

1import (2func main() {3    gen := proggen.NewGenResource()4    gen.GenResource("test")5    gen.GenResource("test", "test2")6    gen.GenResource("test", "test2", "testpackage")7    gen.GenResource("test", "test2", "testpackage", "testfile")8    gen.GenResource("test", "test2", "testpackage", "testfile", "testpath")9}10import "github.com/darkowlzz/Go-Gen-Resource"11var (12    Test2 = proggen.Resource{Data: []byte{0x74, 0x65, 0x73, 0x74}, Name: "test2", Package: "testpackage", Size: 4}

genResource

Using AI Code Generation

1import java.io.*;2import java.util.*;3import java.awt.*;4import java.awt.event.*;5import javax.swing.*;6import javax.swing.event.*;7import java.util.regex.*;8import javax.swing.text.*;9import java.text.*;10import java.lang.*;11import java.lang.reflect.*;12import java.net.*;13import java.util.zip.*;14import java.util.jar.*;15import java.awt.print.*;16import java.beans.*;17import java.util.prefs.*;18import java.util.logging.*;19import java.util.logging.Logger;20import java.util.logging.Level;21import java.util.logging.Handler;22import java.util.logging.FileHandler;23import java.util.logging.SimpleFormatter;24import java.util.logging.Formatter;25import java.util.logging.LogRecord;26import java.util.logging.ConsoleHandler;27import java.util.logging.XMLFormatter;28import java.util.logging.ErrorManager;29import java.util.logging.Filter;30import java.util.logging.MemoryHandler;31import java.util.logging.StreamHandler;32import java.util.logging.SocketHandler;33import java.util.logging.Level;

genResource

Using AI Code Generation

1import (2func main() {3	vm := otto.New()4	underscore.Enable(vm)5	f, err := os.Open("proggen.js")6	if err != nil {7		log.Fatal(err)8	}9	defer f.Close()10	if _, err := vm.Run(f); err != nil {11		log.Fatal(err)12	}13	result, err := vm.Run("genResource('Hello World')")14	if err != nil {15		log.Fatal(err)16	}17	f2, err := os.Create("test.res")18	if err != nil {19		log.Fatal(err)20	}21	f2.WriteString(result.String())22	f2.Close()23}

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