From c65b43a0fa53808077aa70436814b82f17236bec Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Thu, 9 Sep 2021 16:16:56 +0000 Subject: Bump github.com/godbus/dbus/v5 from 5.0.4 to 5.0.5 Bumps [github.com/godbus/dbus/v5](https://github.com/godbus/dbus) from 5.0.4 to 5.0.5. - [Release notes](https://github.com/godbus/dbus/releases) - [Commits](https://github.com/godbus/dbus/compare/v5.0.4...v5.0.5) --- updated-dependencies: - dependency-name: github.com/godbus/dbus/v5 dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] --- vendor/github.com/godbus/dbus/v5/README.markdown | 46 -------------- vendor/github.com/godbus/dbus/v5/README.md | 46 ++++++++++++++ vendor/github.com/godbus/dbus/v5/auth.go | 13 ++-- vendor/github.com/godbus/dbus/v5/conn.go | 14 ++++- vendor/github.com/godbus/dbus/v5/decoder.go | 16 +++-- vendor/github.com/godbus/dbus/v5/encoder.go | 61 ++++++++++++------ vendor/github.com/godbus/dbus/v5/export.go | 37 ++++++++--- vendor/github.com/godbus/dbus/v5/message.go | 73 +++++++++++++++------- vendor/github.com/godbus/dbus/v5/sig.go | 66 ++++++++++++++----- .../github.com/godbus/dbus/v5/transport_generic.go | 10 +-- vendor/github.com/godbus/dbus/v5/transport_unix.go | 24 +++---- 11 files changed, 270 insertions(+), 136 deletions(-) delete mode 100644 vendor/github.com/godbus/dbus/v5/README.markdown create mode 100644 vendor/github.com/godbus/dbus/v5/README.md (limited to 'vendor/github.com/godbus/dbus') diff --git a/vendor/github.com/godbus/dbus/v5/README.markdown b/vendor/github.com/godbus/dbus/v5/README.markdown deleted file mode 100644 index 1fb2eacaa..000000000 --- a/vendor/github.com/godbus/dbus/v5/README.markdown +++ /dev/null @@ -1,46 +0,0 @@ -![Build Status](https://github.com/godbus/dbus/workflows/Go/badge.svg) - -dbus ----- - -dbus is a simple library that implements native Go client bindings for the -D-Bus message bus system. - -### Features - -* Complete native implementation of the D-Bus message protocol -* Go-like API (channels for signals / asynchronous method calls, Goroutine-safe connections) -* Subpackages that help with the introspection / property interfaces - -### Installation - -This packages requires Go 1.7. If you installed it and set up your GOPATH, just run: - -``` -go get github.com/godbus/dbus -``` - -If you want to use the subpackages, you can install them the same way. - -### Usage - -The complete package documentation and some simple examples are available at -[godoc.org](http://godoc.org/github.com/godbus/dbus). Also, the -[_examples](https://github.com/godbus/dbus/tree/master/_examples) directory -gives a short overview over the basic usage. - -#### Projects using godbus -- [notify](https://github.com/esiqveland/notify) provides desktop notifications over dbus into a library. -- [go-bluetooth](https://github.com/muka/go-bluetooth) provides a bluetooth client over bluez dbus API. -- [playerbm](https://github.com/altdesktop/playerbm) a bookmark utility for media players. -- [iwd](https://github.com/shibumi/iwd) go bindings for the internet wireless daemon "iwd". - -Please note that the API is considered unstable for now and may change without -further notice. - -### License - -go.dbus is available under the Simplified BSD License; see LICENSE for the full -text. - -Nearly all of the credit for this library goes to github.com/guelfey/go.dbus. diff --git a/vendor/github.com/godbus/dbus/v5/README.md b/vendor/github.com/godbus/dbus/v5/README.md new file mode 100644 index 000000000..5c2412583 --- /dev/null +++ b/vendor/github.com/godbus/dbus/v5/README.md @@ -0,0 +1,46 @@ +![Build Status](https://github.com/godbus/dbus/workflows/Go/badge.svg) + +dbus +---- + +dbus is a simple library that implements native Go client bindings for the +D-Bus message bus system. + +### Features + +* Complete native implementation of the D-Bus message protocol +* Go-like API (channels for signals / asynchronous method calls, Goroutine-safe connections) +* Subpackages that help with the introspection / property interfaces + +### Installation + +This packages requires Go 1.12 or later. It can be installed by running the command below: + +``` +go get github.com/godbus/dbus/v5 +``` + +### Usage + +The complete package documentation and some simple examples are available at +[godoc.org](http://godoc.org/github.com/godbus/dbus). Also, the +[_examples](https://github.com/godbus/dbus/tree/master/_examples) directory +gives a short overview over the basic usage. + +#### Projects using godbus +- [fyne](https://github.com/fyne-io/fyne) a cross platform GUI in Go inspired by Material Design. +- [fynedesk](https://github.com/fyne-io/fynedesk) a full desktop environment for Linux/Unix using Fyne. +- [go-bluetooth](https://github.com/muka/go-bluetooth) provides a bluetooth client over bluez dbus API. +- [iwd](https://github.com/shibumi/iwd) go bindings for the internet wireless daemon "iwd". +- [notify](https://github.com/esiqveland/notify) provides desktop notifications over dbus into a library. +- [playerbm](https://github.com/altdesktop/playerbm) a bookmark utility for media players. + +Please note that the API is considered unstable for now and may change without +further notice. + +### License + +go.dbus is available under the Simplified BSD License; see LICENSE for the full +text. + +Nearly all of the credit for this library goes to github.com/guelfey/go.dbus. diff --git a/vendor/github.com/godbus/dbus/v5/auth.go b/vendor/github.com/godbus/dbus/v5/auth.go index 283487a0e..eb0b2f434 100644 --- a/vendor/github.com/godbus/dbus/v5/auth.go +++ b/vendor/github.com/godbus/dbus/v5/auth.go @@ -75,9 +75,9 @@ func (conn *Conn) Auth(methods []Auth) error { s = s[1:] for _, v := range s { for _, m := range methods { - if name, data, status := m.FirstData(); bytes.Equal(v, name) { + if name, _, status := m.FirstData(); bytes.Equal(v, name) { var ok bool - err = authWriteLine(conn.transport, []byte("AUTH"), v, data) + err = authWriteLine(conn.transport, []byte("AUTH"), v) if err != nil { return err } @@ -194,11 +194,14 @@ func (conn *Conn) tryAuth(m Auth, state authState, in *bufio.Reader) (error, boo } conn.uuid = string(s[1]) return nil, true + case state == waitingForOk && string(s[0]) == "DATA": + err = authWriteLine(conn.transport, []byte("DATA")) + if err != nil { + return err, false + } case state == waitingForOk && string(s[0]) == "REJECTED": return nil, false - case state == waitingForOk && (string(s[0]) == "DATA" || - string(s[0]) == "ERROR"): - + case state == waitingForOk && string(s[0]) == "ERROR": err = authWriteLine(conn.transport, []byte("CANCEL")) if err != nil { return err, false diff --git a/vendor/github.com/godbus/dbus/v5/conn.go b/vendor/github.com/godbus/dbus/v5/conn.go index 29fe018ad..cb8966a74 100644 --- a/vendor/github.com/godbus/dbus/v5/conn.go +++ b/vendor/github.com/godbus/dbus/v5/conn.go @@ -478,14 +478,24 @@ func (conn *Conn) sendMessageAndIfClosed(msg *Message, ifClosed func()) { conn.outInt(msg) } err := conn.outHandler.sendAndIfClosed(msg, ifClosed) - conn.calls.handleSendError(msg, err) if err != nil { - conn.serialGen.RetireSerial(msg.serial) + conn.handleSendError(msg, err) } else if msg.Type != TypeMethodCall { conn.serialGen.RetireSerial(msg.serial) } } +func (conn *Conn) handleSendError(msg *Message, err error) { + if msg.Type == TypeMethodCall { + conn.calls.handleSendError(msg, err) + } else if msg.Type == TypeMethodReply { + if _, ok := err.(FormatError); ok { + conn.sendError(err, msg.Headers[FieldDestination].value.(string), msg.Headers[FieldReplySerial].value.(uint32)) + } + } + conn.serialGen.RetireSerial(msg.serial) +} + // Send sends the given message to the message bus. You usually don't need to // use this; use the higher-level equivalents (Call / Go, Emit and Export) // instead. If msg is a method call and NoReplyExpected is not set, a non-nil diff --git a/vendor/github.com/godbus/dbus/v5/decoder.go b/vendor/github.com/godbus/dbus/v5/decoder.go index ede91575b..89bfed9d1 100644 --- a/vendor/github.com/godbus/dbus/v5/decoder.go +++ b/vendor/github.com/godbus/dbus/v5/decoder.go @@ -10,14 +10,16 @@ type decoder struct { in io.Reader order binary.ByteOrder pos int + fds []int } // newDecoder returns a new decoder that reads values from in. The input is // expected to be in the given byte order. -func newDecoder(in io.Reader, order binary.ByteOrder) *decoder { +func newDecoder(in io.Reader, order binary.ByteOrder, fds []int) *decoder { dec := new(decoder) dec.in = in dec.order = order + dec.fds = fds return dec } @@ -53,7 +55,7 @@ func (dec *decoder) Decode(sig Signature) (vs []interface{}, err error) { vs = make([]interface{}, 0) s := sig.str for s != "" { - err, rem := validSingle(s, 0) + err, rem := validSingle(s, &depthCounter{}) if err != nil { return nil, err } @@ -150,7 +152,7 @@ func (dec *decoder) decode(s string, depth int) interface{} { if len(sig.str) == 0 { panic(FormatError("variant signature is empty")) } - err, rem := validSingle(sig.str, 0) + err, rem := validSingle(sig.str, &depthCounter{}) if err != nil { panic(err) } @@ -161,7 +163,11 @@ func (dec *decoder) decode(s string, depth int) interface{} { variant.value = dec.decode(sig.str, depth+1) return variant case 'h': - return UnixFDIndex(dec.decode("u", depth).(uint32)) + idx := dec.decode("u", depth).(uint32) + if int(idx) < len(dec.fds) { + return UnixFD(dec.fds[idx]) + } + return UnixFDIndex(idx) case 'a': if len(s) > 1 && s[1] == '{' { ksig := s[2:3] @@ -219,7 +225,7 @@ func (dec *decoder) decode(s string, depth int) interface{} { v := make([]interface{}, 0) s = s[1 : len(s)-1] for s != "" { - err, rem := validSingle(s, 0) + err, rem := validSingle(s, &depthCounter{}) if err != nil { panic(err) } diff --git a/vendor/github.com/godbus/dbus/v5/encoder.go b/vendor/github.com/godbus/dbus/v5/encoder.go index adfbb75c5..015b26cd5 100644 --- a/vendor/github.com/godbus/dbus/v5/encoder.go +++ b/vendor/github.com/godbus/dbus/v5/encoder.go @@ -5,28 +5,33 @@ import ( "encoding/binary" "io" "reflect" + "strings" + "unicode/utf8" ) // An encoder encodes values to the D-Bus wire format. type encoder struct { out io.Writer + fds []int order binary.ByteOrder pos int } // NewEncoder returns a new encoder that writes to out in the given byte order. -func newEncoder(out io.Writer, order binary.ByteOrder) *encoder { - return newEncoderAtOffset(out, 0, order) +func newEncoder(out io.Writer, order binary.ByteOrder, fds []int) *encoder { + enc := newEncoderAtOffset(out, 0, order, fds) + return enc } // newEncoderAtOffset returns a new encoder that writes to out in the given // byte order. Specify the offset to initialize pos for proper alignment // computation. -func newEncoderAtOffset(out io.Writer, offset int, order binary.ByteOrder) *encoder { +func newEncoderAtOffset(out io.Writer, offset int, order binary.ByteOrder, fds []int) *encoder { enc := new(encoder) enc.out = out enc.order = order enc.pos = offset + enc.fds = fds return enc } @@ -75,6 +80,9 @@ func (enc *encoder) Encode(vs ...interface{}) (err error) { // encode encodes the given value to the writer and panics on error. depth holds // the depth of the container nesting. func (enc *encoder) encode(v reflect.Value, depth int) { + if depth > 64 { + panic(FormatError("input exceeds depth limitation")) + } enc.align(alignment(v.Type())) switch v.Kind() { case reflect.Uint8: @@ -97,7 +105,14 @@ func (enc *encoder) encode(v reflect.Value, depth int) { enc.binwrite(uint16(v.Uint())) enc.pos += 2 case reflect.Int, reflect.Int32: - enc.binwrite(int32(v.Int())) + if v.Type() == unixFDType { + fd := v.Int() + idx := len(enc.fds) + enc.fds = append(enc.fds, int(fd)) + enc.binwrite(uint32(idx)) + } else { + enc.binwrite(int32(v.Int())) + } enc.pos += 4 case reflect.Uint, reflect.Uint32: enc.binwrite(uint32(v.Uint())) @@ -112,9 +127,21 @@ func (enc *encoder) encode(v reflect.Value, depth int) { enc.binwrite(v.Float()) enc.pos += 8 case reflect.String: - enc.encode(reflect.ValueOf(uint32(len(v.String()))), depth) + str := v.String() + if !utf8.ValidString(str) { + panic(FormatError("input has a not-utf8 char in string")) + } + if strings.IndexByte(str, byte(0)) != -1 { + panic(FormatError("input has a null char('\\000') in string")) + } + if v.Type() == objectPathType { + if !ObjectPath(str).IsValid() { + panic(FormatError("invalid object path")) + } + } + enc.encode(reflect.ValueOf(uint32(len(str))), depth) b := make([]byte, v.Len()+1) - copy(b, v.String()) + copy(b, str) b[len(b)-1] = 0 n, err := enc.out.Write(b) if err != nil { @@ -124,20 +151,23 @@ func (enc *encoder) encode(v reflect.Value, depth int) { case reflect.Ptr: enc.encode(v.Elem(), depth) case reflect.Slice, reflect.Array: - if depth >= 64 { - panic(FormatError("input exceeds container depth limit")) - } // Lookahead offset: 4 bytes for uint32 length (with alignment), // plus alignment for elements. n := enc.padding(0, 4) + 4 offset := enc.pos + n + enc.padding(n, alignment(v.Type().Elem())) var buf bytes.Buffer - bufenc := newEncoderAtOffset(&buf, offset, enc.order) + bufenc := newEncoderAtOffset(&buf, offset, enc.order, enc.fds) for i := 0; i < v.Len(); i++ { bufenc.encode(v.Index(i), depth+1) } + + if buf.Len() > 1<<26 { + panic(FormatError("input exceeds array size limitation")) + } + + enc.fds = bufenc.fds enc.encode(reflect.ValueOf(uint32(buf.Len())), depth) length := buf.Len() enc.align(alignment(v.Type().Elem())) @@ -146,13 +176,10 @@ func (enc *encoder) encode(v reflect.Value, depth int) { } enc.pos += length case reflect.Struct: - if depth >= 64 && v.Type() != signatureType { - panic(FormatError("input exceeds container depth limit")) - } switch t := v.Type(); t { case signatureType: str := v.Field(0) - enc.encode(reflect.ValueOf(byte(str.Len())), depth+1) + enc.encode(reflect.ValueOf(byte(str.Len())), depth) b := make([]byte, str.Len()+1) copy(b, str.String()) b[len(b)-1] = 0 @@ -176,9 +203,6 @@ func (enc *encoder) encode(v reflect.Value, depth int) { case reflect.Map: // Maps are arrays of structures, so they actually increase the depth by // 2. - if depth >= 63 { - panic(FormatError("input exceeds container depth limit")) - } if !isKeyType(v.Type().Key()) { panic(InvalidTypeError{v.Type()}) } @@ -189,12 +213,13 @@ func (enc *encoder) encode(v reflect.Value, depth int) { offset := enc.pos + n + enc.padding(n, 8) var buf bytes.Buffer - bufenc := newEncoderAtOffset(&buf, offset, enc.order) + bufenc := newEncoderAtOffset(&buf, offset, enc.order, enc.fds) for _, k := range keys { bufenc.align(8) bufenc.encode(k, depth+2) bufenc.encode(v.MapIndex(k), depth+2) } + enc.fds = bufenc.fds enc.encode(reflect.ValueOf(uint32(buf.Len())), depth) length := buf.Len() enc.align(8) diff --git a/vendor/github.com/godbus/dbus/v5/export.go b/vendor/github.com/godbus/dbus/v5/export.go index 2447b51d4..522334715 100644 --- a/vendor/github.com/godbus/dbus/v5/export.go +++ b/vendor/github.com/godbus/dbus/v5/export.go @@ -26,6 +26,27 @@ var ( } ) +func MakeNoObjectError(path ObjectPath) Error { + return Error{ + "org.freedesktop.DBus.Error.NoSuchObject", + []interface{}{fmt.Sprintf("No such object '%s'", string(path))}, + } +} + +func MakeUnknownMethodError(methodName string) Error { + return Error{ + "org.freedesktop.DBus.Error.UnknownMethod", + []interface{}{fmt.Sprintf("Unknown / invalid method '%s'", methodName)}, + } +} + +func MakeUnknownInterfaceError(ifaceName string) Error { + return Error{ + "org.freedesktop.DBus.Error.UnknownInterface", + []interface{}{fmt.Sprintf("Object does not implement the interface '%s'", ifaceName)}, + } +} + func MakeFailedError(err error) *Error { return &Error{ "org.freedesktop.DBus.Error.Failed", @@ -128,6 +149,11 @@ func (conn *Conn) handleCall(msg *Message) { ifaceName, _ := msg.Headers[FieldInterface].value.(string) sender, hasSender := msg.Headers[FieldSender].value.(string) serial := msg.serial + + if len(name) == 0 { + conn.sendError(ErrMsgUnknownMethod, sender, serial) + } + if ifaceName == "org.freedesktop.DBus.Peer" { switch name { case "Ping": @@ -135,29 +161,26 @@ func (conn *Conn) handleCall(msg *Message) { case "GetMachineId": conn.sendReply(sender, serial, conn.uuid) default: - conn.sendError(ErrMsgUnknownMethod, sender, serial) + conn.sendError(MakeUnknownMethodError(name), sender, serial) } return } - if len(name) == 0 { - conn.sendError(ErrMsgUnknownMethod, sender, serial) - } object, ok := conn.handler.LookupObject(path) if !ok { - conn.sendError(ErrMsgNoObject, sender, serial) + conn.sendError(MakeNoObjectError(path), sender, serial) return } iface, exists := object.LookupInterface(ifaceName) if !exists { - conn.sendError(ErrMsgUnknownInterface, sender, serial) + conn.sendError(MakeUnknownInterfaceError(ifaceName), sender, serial) return } m, exists := iface.LookupMethod(name) if !exists { - conn.sendError(ErrMsgUnknownMethod, sender, serial) + conn.sendError(MakeUnknownMethodError(name), sender, serial) return } args, err := conn.decodeArguments(m, sender, msg) diff --git a/vendor/github.com/godbus/dbus/v5/message.go b/vendor/github.com/godbus/dbus/v5/message.go index 6a925367e..dd86aff4f 100644 --- a/vendor/github.com/godbus/dbus/v5/message.go +++ b/vendor/github.com/godbus/dbus/v5/message.go @@ -118,11 +118,7 @@ type header struct { Variant } -// DecodeMessage tries to decode a single message in the D-Bus wire format -// from the given reader. The byte order is figured out from the first byte. -// The possibly returned error can be an error of the underlying reader, an -// InvalidMessageError or a FormatError. -func DecodeMessage(rd io.Reader) (msg *Message, err error) { +func DecodeMessageWithFDs(rd io.Reader, fds []int) (msg *Message, err error) { var order binary.ByteOrder var hlength, length uint32 var typ, flags, proto byte @@ -142,7 +138,7 @@ func DecodeMessage(rd io.Reader) (msg *Message, err error) { return nil, InvalidMessageError("invalid byte order") } - dec := newDecoder(rd, order) + dec := newDecoder(rd, order, fds) dec.pos = 1 msg = new(Message) @@ -166,7 +162,7 @@ func DecodeMessage(rd io.Reader) (msg *Message, err error) { if hlength+length+16 > 1<<27 { return nil, InvalidMessageError("message is too long") } - dec = newDecoder(io.MultiReader(bytes.NewBuffer(b), rd), order) + dec = newDecoder(io.MultiReader(bytes.NewBuffer(b), rd), order, fds) dec.pos = 12 vs, err = dec.Decode(Signature{"a(yv)"}) if err != nil { @@ -196,7 +192,7 @@ func DecodeMessage(rd io.Reader) (msg *Message, err error) { sig, _ := msg.Headers[FieldSignature].value.(Signature) if sig.str != "" { buf := bytes.NewBuffer(body) - dec = newDecoder(buf, order) + dec = newDecoder(buf, order, fds) vs, err := dec.Decode(sig) if err != nil { return nil, err @@ -207,12 +203,32 @@ func DecodeMessage(rd io.Reader) (msg *Message, err error) { return } -// EncodeTo encodes and sends a message to the given writer. The byte order must -// be either binary.LittleEndian or binary.BigEndian. If the message is not -// valid or an error occurs when writing, an error is returned. -func (msg *Message) EncodeTo(out io.Writer, order binary.ByteOrder) error { +// DecodeMessage tries to decode a single message in the D-Bus wire format +// from the given reader. The byte order is figured out from the first byte. +// The possibly returned error can be an error of the underlying reader, an +// InvalidMessageError or a FormatError. +func DecodeMessage(rd io.Reader) (msg *Message, err error) { + return DecodeMessageWithFDs(rd, make([]int, 0)); +} + +type nullwriter struct{} + +func (nullwriter) Write(p []byte) (cnt int, err error) { + return len(p), nil +} + +func (msg *Message) CountFds() (int, error) { + if len(msg.Body) == 0 { + return 0, nil + } + enc := newEncoder(nullwriter{}, nativeEndian, make([]int, 0)) + err := enc.Encode(msg.Body...) + return len(enc.fds), err +} + +func (msg *Message) EncodeToWithFDs(out io.Writer, order binary.ByteOrder) (fds []int, err error) { if err := msg.IsValid(); err != nil { - return err + return make([]int, 0), err } var vs [7]interface{} switch order { @@ -221,12 +237,16 @@ func (msg *Message) EncodeTo(out io.Writer, order binary.ByteOrder) error { case binary.BigEndian: vs[0] = byte('B') default: - return errors.New("dbus: invalid byte order") + return make([]int, 0), errors.New("dbus: invalid byte order") } body := new(bytes.Buffer) - enc := newEncoder(body, order) + fds = make([]int, 0) + enc := newEncoder(body, order, fds) if len(msg.Body) != 0 { - enc.Encode(msg.Body...) + err = enc.Encode(msg.Body...) + if err != nil { + return + } } vs[1] = msg.Type vs[2] = msg.Flags @@ -239,17 +259,28 @@ func (msg *Message) EncodeTo(out io.Writer, order binary.ByteOrder) error { } vs[6] = headers var buf bytes.Buffer - enc = newEncoder(&buf, order) - enc.Encode(vs[:]...) + enc = newEncoder(&buf, order, enc.fds) + err = enc.Encode(vs[:]...) + if err != nil { + return + } enc.align(8) body.WriteTo(&buf) if buf.Len() > 1<<27 { - return InvalidMessageError("message is too long") + return make([]int, 0), InvalidMessageError("message is too long") } if _, err := buf.WriteTo(out); err != nil { - return err + return make([]int, 0), err } - return nil + return enc.fds, nil +} + +// EncodeTo encodes and sends a message to the given writer. The byte order must +// be either binary.LittleEndian or binary.BigEndian. If the message is not +// valid or an error occurs when writing, an error is returned. +func (msg *Message) EncodeTo(out io.Writer, order binary.ByteOrder) (err error) { + _, err = msg.EncodeToWithFDs(out, order); + return err; } // IsValid checks whether msg is a valid message and returns an diff --git a/vendor/github.com/godbus/dbus/v5/sig.go b/vendor/github.com/godbus/dbus/v5/sig.go index 2d326cebc..41a039812 100644 --- a/vendor/github.com/godbus/dbus/v5/sig.go +++ b/vendor/github.com/godbus/dbus/v5/sig.go @@ -34,7 +34,7 @@ type Signature struct { func SignatureOf(vs ...interface{}) Signature { var s string for _, v := range vs { - s += getSignature(reflect.TypeOf(v)) + s += getSignature(reflect.TypeOf(v), &depthCounter{}) } return Signature{s} } @@ -42,11 +42,19 @@ func SignatureOf(vs ...interface{}) Signature { // SignatureOfType returns the signature of the given type. It panics if the // type is not representable in D-Bus. func SignatureOfType(t reflect.Type) Signature { - return Signature{getSignature(t)} + return Signature{getSignature(t, &depthCounter{})} } // getSignature returns the signature of the given type and panics on unknown types. -func getSignature(t reflect.Type) string { +func getSignature(t reflect.Type, depth *depthCounter) (sig string) { + if !depth.Valid() { + panic("container nesting too deep") + } + defer func() { + if len(sig) > 255 { + panic("signature exceeds the length limitation") + } + }() // handle simple types first switch t.Kind() { case reflect.Uint8: @@ -74,7 +82,7 @@ func getSignature(t reflect.Type) string { case reflect.Float64: return "d" case reflect.Ptr: - return getSignature(t.Elem()) + return getSignature(t.Elem(), depth) case reflect.String: if t == objectPathType { return "o" @@ -90,17 +98,20 @@ func getSignature(t reflect.Type) string { for i := 0; i < t.NumField(); i++ { field := t.Field(i) if field.PkgPath == "" && field.Tag.Get("dbus") != "-" { - s += getSignature(t.Field(i).Type) + s += getSignature(t.Field(i).Type, depth.EnterStruct()) } } + if len(s) == 0 { + panic("empty struct") + } return "(" + s + ")" case reflect.Array, reflect.Slice: - return "a" + getSignature(t.Elem()) + return "a" + getSignature(t.Elem(), depth.EnterArray()) case reflect.Map: if !isKeyType(t.Key()) { panic(InvalidTypeError{t}) } - return "a{" + getSignature(t.Key()) + getSignature(t.Elem()) + "}" + return "a{" + getSignature(t.Key(), depth.EnterArray().EnterDictEntry()) + getSignature(t.Elem(), depth.EnterArray().EnterDictEntry()) + "}" case reflect.Interface: return "v" } @@ -118,7 +129,7 @@ func ParseSignature(s string) (sig Signature, err error) { } sig.str = s for err == nil && len(s) != 0 { - err, s = validSingle(s, 0) + err, s = validSingle(s, &depthCounter{}) } if err != nil { sig = Signature{""} @@ -144,7 +155,7 @@ func (s Signature) Empty() bool { // Single returns whether the signature represents a single, complete type. func (s Signature) Single() bool { - err, r := validSingle(s.str, 0) + err, r := validSingle(s.str, &depthCounter{}) return err != nil && r == "" } @@ -164,15 +175,38 @@ func (e SignatureError) Error() string { return fmt.Sprintf("dbus: invalid signature: %q (%s)", e.Sig, e.Reason) } +type depthCounter struct { + arrayDepth, structDepth, dictEntryDepth int +} + +func (cnt *depthCounter) Valid() bool { + return cnt.arrayDepth <= 32 && cnt.structDepth <= 32 && cnt.dictEntryDepth <= 32 +} + +func (cnt depthCounter) EnterArray() *depthCounter { + cnt.arrayDepth++ + return &cnt +} + +func (cnt depthCounter) EnterStruct() *depthCounter { + cnt.structDepth++ + return &cnt +} + +func (cnt depthCounter) EnterDictEntry() *depthCounter { + cnt.dictEntryDepth++ + return &cnt +} + // Try to read a single type from this string. If it was successful, err is nil // and rem is the remaining unparsed part. Otherwise, err is a non-nil // SignatureError and rem is "". depth is the current recursion depth which may // not be greater than 64 and should be given as 0 on the first call. -func validSingle(s string, depth int) (err error, rem string) { +func validSingle(s string, depth *depthCounter) (err error, rem string) { if s == "" { return SignatureError{Sig: s, Reason: "empty signature"}, "" } - if depth > 64 { + if !depth.Valid() { return SignatureError{Sig: s, Reason: "container nesting too deep"}, "" } switch s[0] { @@ -187,10 +221,10 @@ func validSingle(s string, depth int) (err error, rem string) { i++ rem = s[i+1:] s = s[2:i] - if err, _ = validSingle(s[:1], depth+1); err != nil { + if err, _ = validSingle(s[:1], depth.EnterArray().EnterDictEntry()); err != nil { return err, "" } - err, nr := validSingle(s[1:], depth+1) + err, nr := validSingle(s[1:], depth.EnterArray().EnterDictEntry()) if err != nil { return err, "" } @@ -199,7 +233,7 @@ func validSingle(s string, depth int) (err error, rem string) { } return nil, rem } - return validSingle(s[1:], depth+1) + return validSingle(s[1:], depth.EnterArray()) case '(': i := findMatching(s, '(', ')') if i == -1 { @@ -208,7 +242,7 @@ func validSingle(s string, depth int) (err error, rem string) { rem = s[i+1:] s = s[1:i] for err == nil && s != "" { - err, s = validSingle(s, depth+1) + err, s = validSingle(s, depth.EnterStruct()) } if err != nil { rem = "" @@ -236,7 +270,7 @@ func findMatching(s string, left, right rune) int { // typeFor returns the type of the given signature. It ignores any left over // characters and panics if s doesn't start with a valid type signature. func typeFor(s string) (t reflect.Type) { - err, _ := validSingle(s, 0) + err, _ := validSingle(s, &depthCounter{}) if err != nil { panic(err) } diff --git a/vendor/github.com/godbus/dbus/v5/transport_generic.go b/vendor/github.com/godbus/dbus/v5/transport_generic.go index 718a1ff02..a08e2813c 100644 --- a/vendor/github.com/godbus/dbus/v5/transport_generic.go +++ b/vendor/github.com/godbus/dbus/v5/transport_generic.go @@ -41,10 +41,12 @@ func (t genericTransport) ReadMessage() (*Message, error) { } func (t genericTransport) SendMessage(msg *Message) error { - for _, v := range msg.Body { - if _, ok := v.(UnixFD); ok { - return errors.New("dbus: unix fd passing not enabled") - } + fds, err := msg.CountFds() + if err != nil { + return err + } + if fds != 0 { + return errors.New("dbus: unix fd passing not enabled") } return msg.EncodeTo(t, nativeEndian) } diff --git a/vendor/github.com/godbus/dbus/v5/transport_unix.go b/vendor/github.com/godbus/dbus/v5/transport_unix.go index c7cd02f97..2212e7fa7 100644 --- a/vendor/github.com/godbus/dbus/v5/transport_unix.go +++ b/vendor/github.com/godbus/dbus/v5/transport_unix.go @@ -113,7 +113,7 @@ func (t *unixTransport) ReadMessage() (*Message, error) { if _, err := io.ReadFull(t.rdr, headerdata[4:]); err != nil { return nil, err } - dec := newDecoder(bytes.NewBuffer(headerdata), order) + dec := newDecoder(bytes.NewBuffer(headerdata), order, make([]int, 0)) dec.pos = 12 vs, err := dec.Decode(Signature{"a(yv)"}) if err != nil { @@ -147,7 +147,7 @@ func (t *unixTransport) ReadMessage() (*Message, error) { if err != nil { return nil, err } - msg, err := DecodeMessage(bytes.NewBuffer(all)) + msg, err := DecodeMessageWithFDs(bytes.NewBuffer(all), fds) if err != nil { return nil, err } @@ -179,21 +179,21 @@ func (t *unixTransport) ReadMessage() (*Message, error) { } func (t *unixTransport) SendMessage(msg *Message) error { - fds := make([]int, 0) - for i, v := range msg.Body { - if fd, ok := v.(UnixFD); ok { - msg.Body[i] = UnixFDIndex(len(fds)) - fds = append(fds, int(fd)) - } + fdcnt, err := msg.CountFds() + if err != nil { + return err } - if len(fds) != 0 { + if fdcnt != 0 { if !t.hasUnixFDs { return errors.New("dbus: unix fd passing not enabled") } - msg.Headers[FieldUnixFDs] = MakeVariant(uint32(len(fds))) - oob := syscall.UnixRights(fds...) + msg.Headers[FieldUnixFDs] = MakeVariant(uint32(fdcnt)) buf := new(bytes.Buffer) - msg.EncodeTo(buf, nativeEndian) + fds, err := msg.EncodeToWithFDs(buf, nativeEndian) + if err != nil { + return err + } + oob := syscall.UnixRights(fds...) n, oobn, err := t.UnixConn.WriteMsgUnix(buf.Bytes(), oob, nil) if err != nil { return err -- cgit v1.2.3-54-g00ecf