build(deps): bump github.com/godbus/dbus/v5 from 5.0.6 to 5.1.0

Bumps [github.com/godbus/dbus/v5](https://github.com/godbus/dbus) from 5.0.6 to 5.1.0.
- [Release notes](https://github.com/godbus/dbus/releases)
- [Commits](https://github.com/godbus/dbus/compare/v5.0.6...v5.1.0)

---
updated-dependencies:
- dependency-name: github.com/godbus/dbus/v5
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/coreos/go-systemd/v22 v22.3.2
 	github.com/cyphar/filepath-securejoin v0.2.3
 	github.com/docker/go-units v0.4.0
-	github.com/godbus/dbus/v5 v5.0.6
+	github.com/godbus/dbus/v5 v5.1.0
 	github.com/moby/sys/mountinfo v0.6.0
 	github.com/mrunalp/fileutils v0.5.0
 	github.com/opencontainers/runtime-spec v1.0.3-0.20210326190908-1c3f411f0417

go.sum

@@ -19,8 +19,8 @@ github.com/docker/go-units v0.4.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDD
 github.com/frankban/quicktest v1.14.0 h1:+cqqvzZV87b4adx/5ayVOaYZ2CrvM4ejQvUdBzPPUss=
 github.com/frankban/quicktest v1.14.0/go.mod h1:NeW+ay9A/U67EYXNFA1nPE8e/tnQv/09mUdL/ijj8og=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
-github.com/godbus/dbus/v5 v5.0.6 h1:mkgN1ofwASrYnJ5W6U/BxG15eXXXjirgZc7CLqkcaro=
+github.com/godbus/dbus/v5 v5.1.0 h1:4KLkAxT3aOY8Li4FRJe/KvhoNFFxo0m6fNuFUO8QJUk=
-github.com/godbus/dbus/v5 v5.0.6/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/godbus/dbus/v5 v5.1.0/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.6 h1:BKbKCqvP6I+rmFHt06ZmyQtvB8xAkWdhFyr0ZUNZcxQ=

vendor/github.com/godbus/dbus/v5/auth.go

@@ -176,9 +176,10 @@ func (conn *Conn) tryAuth(m Auth, state authState, in *bufio.Reader) (error, boo
 					return err, false
 				}
 				state = waitingForReject
+			} else {
+				conn.uuid = string(s[1])
+				return nil, true
 			}
-			conn.uuid = string(s[1])
-			return nil, true
 		case state == waitingForData:
 			err = authWriteLine(conn.transport, []byte("ERROR"))
 			if err != nil {
@@ -191,9 +192,10 @@ func (conn *Conn) tryAuth(m Auth, state authState, in *bufio.Reader) (error, boo
 					return err, false
 				}
 				state = waitingForReject
+			} else {
+				conn.uuid = string(s[1])
+				return nil, true
 			}
-			conn.uuid = string(s[1])
-			return nil, true
 		case state == waitingForOk && string(s[0]) == "DATA":
 			err = authWriteLine(conn.transport, []byte("DATA"))
 			if err != nil {

vendor/github.com/godbus/dbus/v5/conn.go

@@ -169,7 +169,7 @@ func Connect(address string, opts ...ConnOption) (*Conn, error) {
 
 // SystemBusPrivate returns a new private connection to the system bus.
 // Note: this connection is not ready to use. One must perform Auth and Hello
-// on the connection before it is useable.
+// on the connection before it is usable.
 func SystemBusPrivate(opts ...ConnOption) (*Conn, error) {
 	return Dial(getSystemBusPlatformAddress(), opts...)
 }
@@ -284,10 +284,6 @@ func newConn(tr transport, opts ...ConnOption) (*Conn, error) {
 		conn.ctx = context.Background()
 	}
 	conn.ctx, conn.cancelCtx = context.WithCancel(conn.ctx)
-	go func() {
-		<-conn.ctx.Done()
-		conn.Close()
-	}()
 
 	conn.calls = newCallTracker()
 	if conn.handler == nil {
@@ -302,6 +298,11 @@ func newConn(tr transport, opts ...ConnOption) (*Conn, error) {
 	conn.outHandler = &outputHandler{conn: conn}
 	conn.names = newNameTracker()
 	conn.busObj = conn.Object("org.freedesktop.DBus", "/org/freedesktop/DBus")
+
+	go func() {
+		<-conn.ctx.Done()
+		conn.Close()
+	}()
 	return conn, nil
 }
 
@@ -550,6 +551,11 @@ func (conn *Conn) send(ctx context.Context, msg *Message, ch chan *Call) *Call {
 		call.ctx = ctx
 		call.ctxCanceler = canceler
 		conn.calls.track(msg.serial, call)
+		if ctx.Err() != nil {
+			// short path: don't even send the message if context already cancelled
+			conn.calls.handleSendError(msg, ctx.Err())
+			return call
+		}
 		go func() {
 			<-ctx.Done()
 			conn.calls.handleSendError(msg, ctx.Err())
@@ -649,7 +655,9 @@ func (conn *Conn) RemoveMatchSignalContext(ctx context.Context, options ...Match
 
 // Signal registers the given channel to be passed all received signal messages.
 //
-// Multiple of these channels can be registered at the same time.
+// Multiple of these channels can be registered at the same time. The channel is
+// closed if the Conn is closed; it should not be closed by the caller before
+// RemoveSignal was called on it.
 //
 // These channels are "overwritten" by Eavesdrop; i.e., if there currently is a
 // channel for eavesdropped messages, this channel receives all signals, and
@@ -765,7 +773,12 @@ func getKey(s, key string) string {
 	for _, keyEqualsValue := range strings.Split(s, ",") {
 		keyValue := strings.SplitN(keyEqualsValue, "=", 2)
 		if len(keyValue) == 2 && keyValue[0] == key {
-			return keyValue[1]
+			val, err := UnescapeBusAddressValue(keyValue[1])
+			if err != nil {
+				// No way to return an error.
+				return ""
+			}
+			return val
 		}
 	}
 	return ""

vendor/github.com/godbus/dbus/v5/conn_other.go

@@ -54,7 +54,7 @@ func tryDiscoverDbusSessionBusAddress() string {
 		if runUserBusFile := path.Join(runtimeDirectory, "bus"); fileExists(runUserBusFile) {
 			// if /run/user/<uid>/bus exists, that file itself
 			// *is* the unix socket, so return its path
-			return fmt.Sprintf("unix:path=%s", runUserBusFile)
+			return fmt.Sprintf("unix:path=%s", EscapeBusAddressValue(runUserBusFile))
 		}
 		if runUserSessionDbusFile := path.Join(runtimeDirectory, "dbus-session"); fileExists(runUserSessionDbusFile) {
 			// if /run/user/<uid>/dbus-session exists, it's a
@@ -85,9 +85,6 @@ func getRuntimeDirectory() (string, error) {
 }
 
 func fileExists(filename string) bool {
-	if _, err := os.Stat(filename); !os.IsNotExist(err) {
+	_, err := os.Stat(filename)
-		return true
+	return !os.IsNotExist(err)
-	} else {
-		return false
-	}
 }

vendor/github.com/godbus/dbus/v5/dbus.go

@@ -122,8 +122,11 @@ func isConvertibleTo(dest, src reflect.Type) bool {
 	case dest.Kind() == reflect.Slice:
 		return src.Kind() == reflect.Slice &&
 			isConvertibleTo(dest.Elem(), src.Elem())
+	case dest.Kind() == reflect.Ptr:
+		dest = dest.Elem()
+		return isConvertibleTo(dest, src)
 	case dest.Kind() == reflect.Struct:
-		return src == interfacesType
+		return src == interfacesType || dest.Kind() == src.Kind()
 	default:
 		return src.ConvertibleTo(dest)
 	}
@@ -274,13 +277,8 @@ func storeSliceIntoInterface(dest, src reflect.Value) error {
 func storeSliceIntoSlice(dest, src reflect.Value) error {
 	if dest.IsNil() || dest.Len() < src.Len() {
 		dest.Set(reflect.MakeSlice(dest.Type(), src.Len(), src.Cap()))
-	}
+	} else if dest.Len() > src.Len() {
-	if dest.Len() != src.Len() {
+		dest.Set(dest.Slice(0, src.Len()))
-		return fmt.Errorf(
-			"dbus.Store: type mismatch: "+
-				"slices are different lengths "+
-				"need: %d have: %d",
-			src.Len(), dest.Len())
 	}
 	for i := 0; i < src.Len(); i++ {
 		err := store(dest.Index(i), getVariantValue(src.Index(i)))

vendor/github.com/godbus/dbus/v5/doc.go

@@ -10,8 +10,10 @@ value.
 Conversion Rules
 
 For outgoing messages, Go types are automatically converted to the
-corresponding D-Bus types. The following types are directly encoded as their
+corresponding D-Bus types. See the official specification at
-respective D-Bus equivalents:
+https://dbus.freedesktop.org/doc/dbus-specification.html#type-system for more
+information on the D-Bus type system. The following types are directly encoded
+as their respective D-Bus equivalents:
 
      Go type     | D-Bus type
      ------------+-----------
@@ -39,8 +41,8 @@ Maps encode as DICTs, provided that their key type can be used as a key for
 a DICT.
 
 Structs other than Variant and Signature encode as a STRUCT containing their
-exported fields. Fields whose tags contain `dbus:"-"` and unexported fields will
+exported fields in order. Fields whose tags contain `dbus:"-"` and unexported
-be skipped.
+fields will be skipped.
 
 Pointers encode as the value they're pointed to.
 

vendor/github.com/godbus/dbus/v5/escape.go

@@ -0,0 +1,84 @@
+package dbus
+
+import "net/url"
+
+// EscapeBusAddressValue implements a requirement to escape the values
+// in D-Bus server addresses, as defined by the D-Bus specification at
+// https://dbus.freedesktop.org/doc/dbus-specification.html#addresses.
+func EscapeBusAddressValue(val string) string {
+	toEsc := strNeedsEscape(val)
+	if toEsc == 0 {
+		// Avoid unneeded allocation/copying.
+		return val
+	}
+
+	// Avoid allocation for short paths.
+	var buf [64]byte
+	var out []byte
+	// Every to-be-escaped byte needs 2 extra bytes.
+	required := len(val) + 2*toEsc
+	if required <= len(buf) {
+		out = buf[:required]
+	} else {
+		out = make([]byte, required)
+	}
+
+	j := 0
+	for i := 0; i < len(val); i++ {
+		if ch := val[i]; needsEscape(ch) {
+			// Convert ch to %xx, where xx is hex value.
+			out[j] = '%'
+			out[j+1] = hexchar(ch >> 4)
+			out[j+2] = hexchar(ch & 0x0F)
+			j += 3
+		} else {
+			out[j] = ch
+			j++
+		}
+	}
+
+	return string(out)
+}
+
+// UnescapeBusAddressValue unescapes values in D-Bus server addresses,
+// as defined by the D-Bus specification at
+// https://dbus.freedesktop.org/doc/dbus-specification.html#addresses.
+func UnescapeBusAddressValue(val string) (string, error) {
+	// Looks like url.PathUnescape does exactly what is required.
+	return url.PathUnescape(val)
+}
+
+// hexchar returns an octal representation of a n, where n < 16.
+// For invalid values of n, the function panics.
+func hexchar(n byte) byte {
+	const hex = "0123456789abcdef"
+
+	// For n >= len(hex), runtime will panic.
+	return hex[n]
+}
+
+// needsEscape tells if a byte is NOT one of optionally-escaped bytes.
+func needsEscape(c byte) bool {
+	if 'a' <= c && c <= 'z' || 'A' <= c && c <= 'Z' || '0' <= c && c <= '9' {
+		return false
+	}
+	switch c {
+	case '-', '_', '/', '\\', '.', '*':
+		return false
+	}
+
+	return true
+}
+
+// strNeedsEscape tells how many bytes in the string need escaping.
+func strNeedsEscape(val string) int {
+	count := 0
+
+	for i := 0; i < len(val); i++ {
+		if needsEscape(val[i]) {
+			count++
+		}
+	}
+
+	return count
+}

vendor/github.com/godbus/dbus/v5/export.go

@@ -3,6 +3,7 @@ package dbus
 import (
 	"errors"
 	"fmt"
+	"os"
 	"reflect"
 	"strings"
 )
@@ -209,28 +210,23 @@ func (conn *Conn) handleCall(msg *Message) {
 		}
 		reply.Headers[FieldSignature] = MakeVariant(SignatureOf(reply.Body...))
 
-		conn.sendMessageAndIfClosed(reply, nil)
+		if err := reply.IsValid(); err != nil {
+			fmt.Fprintf(os.Stderr, "dbus: dropping invalid reply to %s.%s on obj %s: %s\n", ifaceName, name, path, err)
+		} else {
+			conn.sendMessageAndIfClosed(reply, nil)
+		}
 	}
 }
 
 // Emit emits the given signal on the message bus. The name parameter must be
 // formatted as "interface.member", e.g., "org.freedesktop.DBus.NameLost".
 func (conn *Conn) Emit(path ObjectPath, name string, values ...interface{}) error {
-	if !path.IsValid() {
-		return errors.New("dbus: invalid object path")
-	}
 	i := strings.LastIndex(name, ".")
 	if i == -1 {
 		return errors.New("dbus: invalid method name")
 	}
 	iface := name[:i]
 	member := name[i+1:]
-	if !isValidMember(member) {
-		return errors.New("dbus: invalid method name")
-	}
-	if !isValidInterface(iface) {
-		return errors.New("dbus: invalid interface name")
-	}
 	msg := new(Message)
 	msg.Type = TypeSignal
 	msg.Headers = make(map[HeaderField]Variant)
@@ -241,6 +237,9 @@ func (conn *Conn) Emit(path ObjectPath, name string, values ...interface{}) erro
 	if len(values) > 0 {
 		msg.Headers[FieldSignature] = MakeVariant(SignatureOf(values...))
 	}
+	if err := msg.IsValid(); err != nil {
+		return err
+	}
 
 	var closed bool
 	conn.sendMessageAndIfClosed(msg, func() {

vendor/github.com/godbus/dbus/v5/homedir.go

@@ -2,27 +2,24 @@ package dbus
 
 import (
 	"os"
-	"sync"
+	"os/user"
-)
-
-var (
-	homeDir     string
-	homeDirLock sync.Mutex
 )
 
+// Get returns the home directory of the current user, which is usually the
+// value of HOME environment variable. In case it is not set or empty, os/user
+// package is used.
+//
+// If linking statically with cgo enabled against glibc, make sure the
+// osusergo build tag is used.
+//
+// If needing to do nss lookups, do not disable cgo or set osusergo.
 func getHomeDir() string {
-	homeDirLock.Lock()
+	homeDir := os.Getenv("HOME")
-	defer homeDirLock.Unlock()
-
 	if homeDir != "" {
 		return homeDir
 	}
-
+	if u, err := user.Current(); err == nil {
-	homeDir = os.Getenv("HOME")
+		return u.HomeDir
-	if homeDir != "" {
-		return homeDir
 	}
-
+	return "/"
-	homeDir = lookupHomeDir()
-	return homeDir
 }

vendor/github.com/godbus/dbus/v5/homedir_dynamic.go

@@ -1,15 +0,0 @@
-// +build !static_build
-
-package dbus
-
-import (
-	"os/user"
-)
-
-func lookupHomeDir() string {
-	u, err := user.Current()
-	if err != nil {
-		return "/"
-	}
-	return u.HomeDir
-}

vendor/github.com/godbus/dbus/v5/homedir_static.go

@@ -1,45 +0,0 @@
-// +build static_build
-
-package dbus
-
-import (
-	"bufio"
-	"os"
-	"strconv"
-	"strings"
-)
-
-func lookupHomeDir() string {
-	myUid := os.Getuid()
-
-	f, err := os.Open("/etc/passwd")
-	if err != nil {
-		return "/"
-	}
-	defer f.Close()
-
-	s := bufio.NewScanner(f)
-
-	for s.Scan() {
-		if err := s.Err(); err != nil {
-			break
-		}
-
-		line := strings.TrimSpace(s.Text())
-		if line == "" {
-			continue
-		}
-
-		parts := strings.Split(line, ":")
-
-		if len(parts) >= 6 {
-			uid, err := strconv.Atoi(parts[2])
-			if err == nil && uid == myUid {
-				return parts[5]
-			}
-		}
-	}
-
-	// Default to / if we can't get a better value
-	return "/"
-}

vendor/github.com/godbus/dbus/v5/message.go

@@ -208,7 +208,7 @@ func DecodeMessageWithFDs(rd io.Reader, fds []int) (msg *Message, err error) {
 // 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));
+	return DecodeMessageWithFDs(rd, make([]int, 0))
 }
 
 type nullwriter struct{}
@@ -227,8 +227,8 @@ func (msg *Message) CountFds() (int, error) {
 }
 
 func (msg *Message) EncodeToWithFDs(out io.Writer, order binary.ByteOrder) (fds []int, err error) {
-	if err := msg.IsValid(); err != nil {
+	if err := msg.validateHeader(); err != nil {
-		return make([]int, 0), err
+		return nil, err
 	}
 	var vs [7]interface{}
 	switch order {
@@ -237,7 +237,7 @@ func (msg *Message) EncodeToWithFDs(out io.Writer, order binary.ByteOrder) (fds
 	case binary.BigEndian:
 		vs[0] = byte('B')
 	default:
-		return make([]int, 0), errors.New("dbus: invalid byte order")
+		return nil, errors.New("dbus: invalid byte order")
 	}
 	body := new(bytes.Buffer)
 	fds = make([]int, 0)
@@ -284,8 +284,13 @@ func (msg *Message) EncodeTo(out io.Writer, order binary.ByteOrder) (err error)
 }
 
 // IsValid checks whether msg is a valid message and returns an
-// InvalidMessageError if it is not.
+// InvalidMessageError or FormatError if it is not.
 func (msg *Message) IsValid() error {
+	var b bytes.Buffer
+	return msg.EncodeTo(&b, nativeEndian)
+}
+
+func (msg *Message) validateHeader() error {
 	if msg.Flags & ^(FlagNoAutoStart|FlagNoReplyExpected|FlagAllowInteractiveAuthorization) != 0 {
 		return InvalidMessageError("invalid flags")
 	}
@@ -330,6 +335,7 @@ func (msg *Message) IsValid() error {
 			return InvalidMessageError("missing signature")
 		}
 	}
+
 	return nil
 }
 

vendor/github.com/godbus/dbus/v5/server_interfaces.go

@@ -63,7 +63,7 @@ type Method interface {
 // any other decoding scheme.
 type ArgumentDecoder interface {
 	// To decode the arguments of a method the sender and message are
-	// provided incase the semantics of the implementer provides access
+	// provided in case the semantics of the implementer provides access
 	// to these as part of the method invocation.
 	DecodeArguments(conn *Conn, sender string, msg *Message, args []interface{}) ([]interface{}, error)
 }

vendor/github.com/godbus/dbus/v5/sig.go

@@ -102,7 +102,7 @@ func getSignature(t reflect.Type, depth *depthCounter) (sig string) {
 			}
 		}
 		if len(s) == 0 {
-			panic("empty struct")
+			panic(InvalidTypeError{t})
 		}
 		return "(" + s + ")"
 	case reflect.Array, reflect.Slice:

vendor/github.com/godbus/dbus/v5/transport_unix.go

@@ -154,17 +154,15 @@ func (t *unixTransport) ReadMessage() (*Message, error) {
 		// substitute the values in the message body (which are indices for the
 		// array receiver via OOB) with the actual values
 		for i, v := range msg.Body {
-			switch v.(type) {
+			switch index := v.(type) {
 			case UnixFDIndex:
-				j := v.(UnixFDIndex)
+				if uint32(index) >= unixfds {
-				if uint32(j) >= unixfds {
 					return nil, InvalidMessageError("invalid index for unix fd")
 				}
-				msg.Body[i] = UnixFD(fds[j])
+				msg.Body[i] = UnixFD(fds[index])
 			case []UnixFDIndex:
-				idxArray := v.([]UnixFDIndex)
+				fdArray := make([]UnixFD, len(index))
-				fdArray := make([]UnixFD, len(idxArray))
+				for k, j := range index {
-				for k, j := range idxArray {
 					if uint32(j) >= unixfds {
 						return nil, InvalidMessageError("invalid index for unix fd")
 					}

vendor/github.com/godbus/dbus/v5/transport_zos.go

@@ -0,0 +1,6 @@
+package dbus
+
+func (t *unixTransport) SendNullByte() error {
+	_, err := t.Write([]byte{0})
+	return err
+}

vendor/github.com/godbus/dbus/v5/variant.go

@@ -49,7 +49,7 @@ func ParseVariant(s string, sig Signature) (Variant, error) {
 }
 
 // format returns a formatted version of v and whether this string can be parsed
-// unambigously.
+// unambiguously.
 func (v Variant) format() (string, bool) {
 	switch v.sig.str[0] {
 	case 'b', 'i':

vendor/modules.txt

@@ -26,7 +26,7 @@ github.com/cyphar/filepath-securejoin
 # github.com/docker/go-units v0.4.0
 ## explicit
 github.com/docker/go-units
-# github.com/godbus/dbus/v5 v5.0.6
+# github.com/godbus/dbus/v5 v5.1.0
 ## explicit
 github.com/godbus/dbus/v5
 # github.com/moby/sys/mountinfo v0.6.0