diff options
author | brb-g <45642843+brb-g@users.noreply.github.com> | 2019-08-29 11:27:49 -0700 |
---|---|---|
committer | Ian Lewis <ianlewis@google.com> | 2019-08-29 11:27:49 -0700 |
commit | 9ce9ceaf4e0678e06c5b899825f918b72f4d5889 (patch) | |
tree | 6c1f8eaf117ac59f3de2a169e4dd342ed1c97eab /vendor/github.com/godbus/dbus | |
parent | 462bafb2e7a4d56b788a7467a9e7c05604f55a15 (diff) |
Replace pre-go1.11 vendoring with a go1.12 module. (#37)
Diffstat (limited to 'vendor/github.com/godbus/dbus')
28 files changed, 0 insertions, 4738 deletions
diff --git a/vendor/github.com/godbus/dbus/LICENSE b/vendor/github.com/godbus/dbus/LICENSE deleted file mode 100644 index 670d88fca..000000000 --- a/vendor/github.com/godbus/dbus/LICENSE +++ /dev/null @@ -1,25 +0,0 @@ -Copyright (c) 2013, Georg Reinke (<guelfey at gmail dot com>), Google -All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions -are met: - -1. Redistributions of source code must retain the above copyright notice, -this list of conditions and the following disclaimer. - -2. Redistributions in binary form must reproduce the above copyright -notice, this list of conditions and the following disclaimer in the -documentation and/or other materials provided with the distribution. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED -TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR -PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF -LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING -NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/github.com/godbus/dbus/README.markdown b/vendor/github.com/godbus/dbus/README.markdown deleted file mode 100644 index 0a6e7e5bf..000000000 --- a/vendor/github.com/godbus/dbus/README.markdown +++ /dev/null @@ -1,41 +0,0 @@ -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 1.1. 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. - -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/auth.go b/vendor/github.com/godbus/dbus/auth.go deleted file mode 100644 index 98017b693..000000000 --- a/vendor/github.com/godbus/dbus/auth.go +++ /dev/null @@ -1,253 +0,0 @@ -package dbus - -import ( - "bufio" - "bytes" - "errors" - "io" - "os" - "strconv" -) - -// AuthStatus represents the Status of an authentication mechanism. -type AuthStatus byte - -const ( - // AuthOk signals that authentication is finished; the next command - // from the server should be an OK. - AuthOk AuthStatus = iota - - // AuthContinue signals that additional data is needed; the next command - // from the server should be a DATA. - AuthContinue - - // AuthError signals an error; the server sent invalid data or some - // other unexpected thing happened and the current authentication - // process should be aborted. - AuthError -) - -type authState byte - -const ( - waitingForData authState = iota - waitingForOk - waitingForReject -) - -// Auth defines the behaviour of an authentication mechanism. -type Auth interface { - // Return the name of the mechnism, the argument to the first AUTH command - // and the next status. - FirstData() (name, resp []byte, status AuthStatus) - - // Process the given DATA command, and return the argument to the DATA - // command and the next status. If len(resp) == 0, no DATA command is sent. - HandleData(data []byte) (resp []byte, status AuthStatus) -} - -// Auth authenticates the connection, trying the given list of authentication -// mechanisms (in that order). If nil is passed, the EXTERNAL and -// DBUS_COOKIE_SHA1 mechanisms are tried for the current user. For private -// connections, this method must be called before sending any messages to the -// bus. Auth must not be called on shared connections. -func (conn *Conn) Auth(methods []Auth) error { - if methods == nil { - uid := strconv.Itoa(os.Getuid()) - methods = []Auth{AuthExternal(uid), AuthCookieSha1(uid, getHomeDir())} - } - in := bufio.NewReader(conn.transport) - err := conn.transport.SendNullByte() - if err != nil { - return err - } - err = authWriteLine(conn.transport, []byte("AUTH")) - if err != nil { - return err - } - s, err := authReadLine(in) - if err != nil { - return err - } - if len(s) < 2 || !bytes.Equal(s[0], []byte("REJECTED")) { - return errors.New("dbus: authentication protocol error") - } - s = s[1:] - for _, v := range s { - for _, m := range methods { - if name, data, status := m.FirstData(); bytes.Equal(v, name) { - var ok bool - err = authWriteLine(conn.transport, []byte("AUTH"), []byte(v), data) - if err != nil { - return err - } - switch status { - case AuthOk: - err, ok = conn.tryAuth(m, waitingForOk, in) - case AuthContinue: - err, ok = conn.tryAuth(m, waitingForData, in) - default: - panic("dbus: invalid authentication status") - } - if err != nil { - return err - } - if ok { - if conn.transport.SupportsUnixFDs() { - err = authWriteLine(conn, []byte("NEGOTIATE_UNIX_FD")) - if err != nil { - return err - } - line, err := authReadLine(in) - if err != nil { - return err - } - switch { - case bytes.Equal(line[0], []byte("AGREE_UNIX_FD")): - conn.EnableUnixFDs() - conn.unixFD = true - case bytes.Equal(line[0], []byte("ERROR")): - default: - return errors.New("dbus: authentication protocol error") - } - } - err = authWriteLine(conn.transport, []byte("BEGIN")) - if err != nil { - return err - } - go conn.inWorker() - go conn.outWorker() - return nil - } - } - } - } - return errors.New("dbus: authentication failed") -} - -// tryAuth tries to authenticate with m as the mechanism, using state as the -// initial authState and in for reading input. It returns (nil, true) on -// success, (nil, false) on a REJECTED and (someErr, false) if some other -// error occured. -func (conn *Conn) tryAuth(m Auth, state authState, in *bufio.Reader) (error, bool) { - for { - s, err := authReadLine(in) - if err != nil { - return err, false - } - switch { - case state == waitingForData && string(s[0]) == "DATA": - if len(s) != 2 { - err = authWriteLine(conn.transport, []byte("ERROR")) - if err != nil { - return err, false - } - continue - } - data, status := m.HandleData(s[1]) - switch status { - case AuthOk, AuthContinue: - if len(data) != 0 { - err = authWriteLine(conn.transport, []byte("DATA"), data) - if err != nil { - return err, false - } - } - if status == AuthOk { - state = waitingForOk - } - case AuthError: - err = authWriteLine(conn.transport, []byte("ERROR")) - if err != nil { - return err, false - } - } - case state == waitingForData && string(s[0]) == "REJECTED": - return nil, false - case state == waitingForData && string(s[0]) == "ERROR": - err = authWriteLine(conn.transport, []byte("CANCEL")) - if err != nil { - return err, false - } - state = waitingForReject - case state == waitingForData && string(s[0]) == "OK": - if len(s) != 2 { - err = authWriteLine(conn.transport, []byte("CANCEL")) - if err != nil { - return err, false - } - state = waitingForReject - } - conn.uuid = string(s[1]) - return nil, true - case state == waitingForData: - err = authWriteLine(conn.transport, []byte("ERROR")) - if err != nil { - return err, false - } - case state == waitingForOk && string(s[0]) == "OK": - if len(s) != 2 { - err = authWriteLine(conn.transport, []byte("CANCEL")) - if err != nil { - return err, false - } - state = waitingForReject - } - conn.uuid = string(s[1]) - return nil, true - case state == waitingForOk && string(s[0]) == "REJECTED": - return nil, false - case state == waitingForOk && (string(s[0]) == "DATA" || - string(s[0]) == "ERROR"): - - err = authWriteLine(conn.transport, []byte("CANCEL")) - if err != nil { - return err, false - } - state = waitingForReject - case state == waitingForOk: - err = authWriteLine(conn.transport, []byte("ERROR")) - if err != nil { - return err, false - } - case state == waitingForReject && string(s[0]) == "REJECTED": - return nil, false - case state == waitingForReject: - return errors.New("dbus: authentication protocol error"), false - default: - panic("dbus: invalid auth state") - } - } -} - -// authReadLine reads a line and separates it into its fields. -func authReadLine(in *bufio.Reader) ([][]byte, error) { - data, err := in.ReadBytes('\n') - if err != nil { - return nil, err - } - data = bytes.TrimSuffix(data, []byte("\r\n")) - return bytes.Split(data, []byte{' '}), nil -} - -// authWriteLine writes the given line in the authentication protocol format -// (elements of data separated by a " " and terminated by "\r\n"). -func authWriteLine(out io.Writer, data ...[]byte) error { - buf := make([]byte, 0) - for i, v := range data { - buf = append(buf, v...) - if i != len(data)-1 { - buf = append(buf, ' ') - } - } - buf = append(buf, '\r') - buf = append(buf, '\n') - n, err := out.Write(buf) - if err != nil { - return err - } - if n != len(buf) { - return io.ErrUnexpectedEOF - } - return nil -} diff --git a/vendor/github.com/godbus/dbus/auth_external.go b/vendor/github.com/godbus/dbus/auth_external.go deleted file mode 100644 index 7e376d3ef..000000000 --- a/vendor/github.com/godbus/dbus/auth_external.go +++ /dev/null @@ -1,26 +0,0 @@ -package dbus - -import ( - "encoding/hex" -) - -// AuthExternal returns an Auth that authenticates as the given user with the -// EXTERNAL mechanism. -func AuthExternal(user string) Auth { - return authExternal{user} -} - -// AuthExternal implements the EXTERNAL authentication mechanism. -type authExternal struct { - user string -} - -func (a authExternal) FirstData() ([]byte, []byte, AuthStatus) { - b := make([]byte, 2*len(a.user)) - hex.Encode(b, []byte(a.user)) - return []byte("EXTERNAL"), b, AuthOk -} - -func (a authExternal) HandleData(b []byte) ([]byte, AuthStatus) { - return nil, AuthError -} diff --git a/vendor/github.com/godbus/dbus/auth_sha1.go b/vendor/github.com/godbus/dbus/auth_sha1.go deleted file mode 100644 index df15b4611..000000000 --- a/vendor/github.com/godbus/dbus/auth_sha1.go +++ /dev/null @@ -1,102 +0,0 @@ -package dbus - -import ( - "bufio" - "bytes" - "crypto/rand" - "crypto/sha1" - "encoding/hex" - "os" -) - -// AuthCookieSha1 returns an Auth that authenticates as the given user with the -// DBUS_COOKIE_SHA1 mechanism. The home parameter should specify the home -// directory of the user. -func AuthCookieSha1(user, home string) Auth { - return authCookieSha1{user, home} -} - -type authCookieSha1 struct { - user, home string -} - -func (a authCookieSha1) FirstData() ([]byte, []byte, AuthStatus) { - b := make([]byte, 2*len(a.user)) - hex.Encode(b, []byte(a.user)) - return []byte("DBUS_COOKIE_SHA1"), b, AuthContinue -} - -func (a authCookieSha1) HandleData(data []byte) ([]byte, AuthStatus) { - challenge := make([]byte, len(data)/2) - _, err := hex.Decode(challenge, data) - if err != nil { - return nil, AuthError - } - b := bytes.Split(challenge, []byte{' '}) - if len(b) != 3 { - return nil, AuthError - } - context := b[0] - id := b[1] - svchallenge := b[2] - cookie := a.getCookie(context, id) - if cookie == nil { - return nil, AuthError - } - clchallenge := a.generateChallenge() - if clchallenge == nil { - return nil, AuthError - } - hash := sha1.New() - hash.Write(bytes.Join([][]byte{svchallenge, clchallenge, cookie}, []byte{':'})) - hexhash := make([]byte, 2*hash.Size()) - hex.Encode(hexhash, hash.Sum(nil)) - data = append(clchallenge, ' ') - data = append(data, hexhash...) - resp := make([]byte, 2*len(data)) - hex.Encode(resp, data) - return resp, AuthOk -} - -// getCookie searches for the cookie identified by id in context and returns -// the cookie content or nil. (Since HandleData can't return a specific error, -// but only whether an error occured, this function also doesn't bother to -// return an error.) -func (a authCookieSha1) getCookie(context, id []byte) []byte { - file, err := os.Open(a.home + "/.dbus-keyrings/" + string(context)) - if err != nil { - return nil - } - defer file.Close() - rd := bufio.NewReader(file) - for { - line, err := rd.ReadBytes('\n') - if err != nil { - return nil - } - line = line[:len(line)-1] - b := bytes.Split(line, []byte{' '}) - if len(b) != 3 { - return nil - } - if bytes.Equal(b[0], id) { - return b[2] - } - } -} - -// generateChallenge returns a random, hex-encoded challenge, or nil on error -// (see above). -func (a authCookieSha1) generateChallenge() []byte { - b := make([]byte, 16) - n, err := rand.Read(b) - if err != nil { - return nil - } - if n != 16 { - return nil - } - enc := make([]byte, 32) - hex.Encode(enc, b) - return enc -} diff --git a/vendor/github.com/godbus/dbus/call.go b/vendor/github.com/godbus/dbus/call.go deleted file mode 100644 index ba6e73f60..000000000 --- a/vendor/github.com/godbus/dbus/call.go +++ /dev/null @@ -1,36 +0,0 @@ -package dbus - -import ( - "errors" -) - -// Call represents a pending or completed method call. -type Call struct { - Destination string - Path ObjectPath - Method string - Args []interface{} - - // Strobes when the call is complete. - Done chan *Call - - // After completion, the error status. If this is non-nil, it may be an - // error message from the peer (with Error as its type) or some other error. - Err error - - // Holds the response once the call is done. - Body []interface{} -} - -var errSignature = errors.New("dbus: mismatched signature") - -// Store stores the body of the reply into the provided pointers. It returns -// an error if the signatures of the body and retvalues don't match, or if -// the error status is not nil. -func (c *Call) Store(retvalues ...interface{}) error { - if c.Err != nil { - return c.Err - } - - return Store(c.Body, retvalues...) -} diff --git a/vendor/github.com/godbus/dbus/conn.go b/vendor/github.com/godbus/dbus/conn.go deleted file mode 100644 index a4f539401..000000000 --- a/vendor/github.com/godbus/dbus/conn.go +++ /dev/null @@ -1,625 +0,0 @@ -package dbus - -import ( - "errors" - "io" - "os" - "reflect" - "strings" - "sync" -) - -const defaultSystemBusAddress = "unix:path=/var/run/dbus/system_bus_socket" - -var ( - systemBus *Conn - systemBusLck sync.Mutex - sessionBus *Conn - sessionBusLck sync.Mutex -) - -// ErrClosed is the error returned by calls on a closed connection. -var ErrClosed = errors.New("dbus: connection closed by user") - -// Conn represents a connection to a message bus (usually, the system or -// session bus). -// -// Connections are either shared or private. Shared connections -// are shared between calls to the functions that return them. As a result, -// the methods Close, Auth and Hello must not be called on them. -// -// Multiple goroutines may invoke methods on a connection simultaneously. -type Conn struct { - transport - - busObj BusObject - unixFD bool - uuid string - - names []string - namesLck sync.RWMutex - - serialLck sync.Mutex - nextSerial uint32 - serialUsed map[uint32]bool - - calls map[uint32]*Call - callsLck sync.RWMutex - - handlers map[ObjectPath]map[string]exportWithMapping - handlersLck sync.RWMutex - - out chan *Message - closed bool - outLck sync.RWMutex - - signals []chan<- *Signal - signalsLck sync.Mutex - - eavesdropped chan<- *Message - eavesdroppedLck sync.Mutex -} - -// SessionBus returns a shared connection to the session bus, connecting to it -// if not already done. -func SessionBus() (conn *Conn, err error) { - sessionBusLck.Lock() - defer sessionBusLck.Unlock() - if sessionBus != nil { - return sessionBus, nil - } - defer func() { - if conn != nil { - sessionBus = conn - } - }() - conn, err = SessionBusPrivate() - if err != nil { - return - } - if err = conn.Auth(nil); err != nil { - conn.Close() - conn = nil - return - } - if err = conn.Hello(); err != nil { - conn.Close() - conn = nil - } - return -} - -// SessionBusPrivate returns a new private connection to the session bus. -func SessionBusPrivate() (*Conn, error) { - address := os.Getenv("DBUS_SESSION_BUS_ADDRESS") - if address != "" && address != "autolaunch:" { - return Dial(address) - } - - return sessionBusPlatform() -} - -// SystemBus returns a shared connection to the system bus, connecting to it if -// not already done. -func SystemBus() (conn *Conn, err error) { - systemBusLck.Lock() - defer systemBusLck.Unlock() - if systemBus != nil { - return systemBus, nil - } - defer func() { - if conn != nil { - systemBus = conn - } - }() - conn, err = SystemBusPrivate() - if err != nil { - return - } - if err = conn.Auth(nil); err != nil { - conn.Close() - conn = nil - return - } - if err = conn.Hello(); err != nil { - conn.Close() - conn = nil - } - return -} - -// SystemBusPrivate returns a new private connection to the system bus. -func SystemBusPrivate() (*Conn, error) { - address := os.Getenv("DBUS_SYSTEM_BUS_ADDRESS") - if address != "" { - return Dial(address) - } - return Dial(defaultSystemBusAddress) -} - -// Dial establishes a new private connection to the message bus specified by address. -func Dial(address string) (*Conn, error) { - tr, err := getTransport(address) - if err != nil { - return nil, err - } - return newConn(tr) -} - -// NewConn creates a new private *Conn from an already established connection. -func NewConn(conn io.ReadWriteCloser) (*Conn, error) { - return newConn(genericTransport{conn}) -} - -// newConn creates a new *Conn from a transport. -func newConn(tr transport) (*Conn, error) { - conn := new(Conn) - conn.transport = tr - conn.calls = make(map[uint32]*Call) - conn.out = make(chan *Message, 10) - conn.handlers = make(map[ObjectPath]map[string]exportWithMapping) - conn.nextSerial = 1 - conn.serialUsed = map[uint32]bool{0: true} - conn.busObj = conn.Object("org.freedesktop.DBus", "/org/freedesktop/DBus") - return conn, nil -} - -// BusObject returns the object owned by the bus daemon which handles -// administrative requests. -func (conn *Conn) BusObject() BusObject { - return conn.busObj -} - -// Close closes the connection. Any blocked operations will return with errors -// and the channels passed to Eavesdrop and Signal are closed. This method must -// not be called on shared connections. -func (conn *Conn) Close() error { - conn.outLck.Lock() - if conn.closed { - // inWorker calls Close on read error, the read error may - // be caused by another caller calling Close to shutdown the - // dbus connection, a double-close scenario we prevent here. - conn.outLck.Unlock() - return nil - } - close(conn.out) - conn.closed = true - conn.outLck.Unlock() - conn.signalsLck.Lock() - for _, ch := range conn.signals { - close(ch) - } - conn.signalsLck.Unlock() - conn.eavesdroppedLck.Lock() - if conn.eavesdropped != nil { - close(conn.eavesdropped) - } - conn.eavesdroppedLck.Unlock() - return conn.transport.Close() -} - -// Eavesdrop causes conn to send all incoming messages to the given channel -// without further processing. Method replies, errors and signals will not be -// sent to the appropiate channels and method calls will not be handled. If nil -// is passed, the normal behaviour is restored. -// -// The caller has to make sure that ch is sufficiently buffered; -// if a message arrives when a write to ch is not possible, the message is -// discarded. -func (conn *Conn) Eavesdrop(ch chan<- *Message) { - conn.eavesdroppedLck.Lock() - conn.eavesdropped = ch - conn.eavesdroppedLck.Unlock() -} - -// getSerial returns an unused serial. -func (conn *Conn) getSerial() uint32 { - conn.serialLck.Lock() - defer conn.serialLck.Unlock() - n := conn.nextSerial - for conn.serialUsed[n] { - n++ - } - conn.serialUsed[n] = true - conn.nextSerial = n + 1 - return n -} - -// Hello sends the initial org.freedesktop.DBus.Hello call. This method must be -// called after authentication, but before sending any other messages to the -// bus. Hello must not be called for shared connections. -func (conn *Conn) Hello() error { - var s string - err := conn.busObj.Call("org.freedesktop.DBus.Hello", 0).Store(&s) - if err != nil { - return err - } - conn.namesLck.Lock() - conn.names = make([]string, 1) - conn.names[0] = s - conn.namesLck.Unlock() - return nil -} - -// inWorker runs in an own goroutine, reading incoming messages from the -// transport and dispatching them appropiately. -func (conn *Conn) inWorker() { - for { - msg, err := conn.ReadMessage() - if err == nil { - conn.eavesdroppedLck.Lock() - if conn.eavesdropped != nil { - select { - case conn.eavesdropped <- msg: - default: - } - conn.eavesdroppedLck.Unlock() - continue - } - conn.eavesdroppedLck.Unlock() - dest, _ := msg.Headers[FieldDestination].value.(string) - found := false - if dest == "" { - found = true - } else { - conn.namesLck.RLock() - if len(conn.names) == 0 { - found = true - } - for _, v := range conn.names { - if dest == v { - found = true - break - } - } - conn.namesLck.RUnlock() - } - if !found { - // Eavesdropped a message, but no channel for it is registered. - // Ignore it. - continue - } - switch msg.Type { - case TypeMethodReply, TypeError: - serial := msg.Headers[FieldReplySerial].value.(uint32) - conn.callsLck.Lock() - if c, ok := conn.calls[serial]; ok { - if msg.Type == TypeError { - name, _ := msg.Headers[FieldErrorName].value.(string) - c.Err = Error{name, msg.Body} - } else { - c.Body = msg.Body - } - c.Done <- c - conn.serialLck.Lock() - delete(conn.serialUsed, serial) - conn.serialLck.Unlock() - delete(conn.calls, serial) - } - conn.callsLck.Unlock() - case TypeSignal: - iface := msg.Headers[FieldInterface].value.(string) - member := msg.Headers[FieldMember].value.(string) - // as per http://dbus.freedesktop.org/doc/dbus-specification.html , - // sender is optional for signals. - sender, _ := msg.Headers[FieldSender].value.(string) - if iface == "org.freedesktop.DBus" && sender == "org.freedesktop.DBus" { - if member == "NameLost" { - // If we lost the name on the bus, remove it from our - // tracking list. - name, ok := msg.Body[0].(string) - if !ok { - panic("Unable to read the lost name") - } - conn.namesLck.Lock() - for i, v := range conn.names { - if v == name { - conn.names = append(conn.names[:i], - conn.names[i+1:]...) - } - } - conn.namesLck.Unlock() - } else if member == "NameAcquired" { - // If we acquired the name on the bus, add it to our - // tracking list. - name, ok := msg.Body[0].(string) - if !ok { - panic("Unable to read the acquired name") - } - conn.namesLck.Lock() - conn.names = append(conn.names, name) - conn.namesLck.Unlock() - } - } - signal := &Signal{ - Sender: sender, - Path: msg.Headers[FieldPath].value.(ObjectPath), - Name: iface + "." + member, - Body: msg.Body, - } - conn.signalsLck.Lock() - for _, ch := range conn.signals { - ch <- signal - } - conn.signalsLck.Unlock() - case TypeMethodCall: - go conn.handleCall(msg) - } - } else if _, ok := err.(InvalidMessageError); !ok { - // Some read error occured (usually EOF); we can't really do - // anything but to shut down all stuff and returns errors to all - // pending replies. - conn.Close() - conn.callsLck.RLock() - for _, v := range conn.calls { - v.Err = err - v.Done <- v - } - conn.callsLck.RUnlock() - return - } - // invalid messages are ignored - } -} - -// Names returns the list of all names that are currently owned by this -// connection. The slice is always at least one element long, the first element -// being the unique name of the connection. -func (conn *Conn) Names() []string { - conn.namesLck.RLock() - // copy the slice so it can't be modified - s := make([]string, len(conn.names)) - copy(s, conn.names) - conn.namesLck.RUnlock() - return s -} - -// Object returns the object identified by the given destination name and path. -func (conn *Conn) Object(dest string, path ObjectPath) BusObject { - return &Object{conn, dest, path} -} - -// outWorker runs in an own goroutine, encoding and sending messages that are -// sent to conn.out. -func (conn *Conn) outWorker() { - for msg := range conn.out { - err := conn.SendMessage(msg) - conn.callsLck.RLock() - if err != nil { - if c := conn.calls[msg.serial]; c != nil { - c.Err = err - c.Done <- c - } - conn.serialLck.Lock() - delete(conn.serialUsed, msg.serial) - conn.serialLck.Unlock() - } else if msg.Type != TypeMethodCall { - conn.serialLck.Lock() - delete(conn.serialUsed, msg.serial) - conn.serialLck.Unlock() - } - conn.callsLck.RUnlock() - } -} - -// 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 -// call is returned and the same value is sent to ch (which must be buffered) -// once the call is complete. Otherwise, ch is ignored and a Call structure is -// returned of which only the Err member is valid. -func (conn *Conn) Send(msg *Message, ch chan *Call) *Call { - var call *Call - - msg.serial = conn.getSerial() - if msg.Type == TypeMethodCall && msg.Flags&FlagNoReplyExpected == 0 { - if ch == nil { - ch = make(chan *Call, 5) - } else if cap(ch) == 0 { - panic("dbus: unbuffered channel passed to (*Conn).Send") - } - call = new(Call) - call.Destination, _ = msg.Headers[FieldDestination].value.(string) - call.Path, _ = msg.Headers[FieldPath].value.(ObjectPath) - iface, _ := msg.Headers[FieldInterface].value.(string) - member, _ := msg.Headers[FieldMember].value.(string) - call.Method = iface + "." + member - call.Args = msg.Body - call.Done = ch - conn.callsLck.Lock() - conn.calls[msg.serial] = call - conn.callsLck.Unlock() - conn.outLck.RLock() - if conn.closed { - call.Err = ErrClosed - call.Done <- call - } else { - conn.out <- msg - } - conn.outLck.RUnlock() - } else { - conn.outLck.RLock() - if conn.closed { - call = &Call{Err: ErrClosed} - } else { - conn.out <- msg - call = &Call{Err: nil} - } - conn.outLck.RUnlock() - } - return call -} - -// sendError creates an error message corresponding to the parameters and sends -// it to conn.out. -func (conn *Conn) sendError(e Error, dest string, serial uint32) { - msg := new(Message) - msg.Type = TypeError - msg.serial = conn.getSerial() - msg.Headers = make(map[HeaderField]Variant) - if dest != "" { - msg.Headers[FieldDestination] = MakeVariant(dest) - } - msg.Headers[FieldErrorName] = MakeVariant(e.Name) - msg.Headers[FieldReplySerial] = MakeVariant(serial) - msg.Body = e.Body - if len(e.Body) > 0 { - msg.Headers[FieldSignature] = MakeVariant(SignatureOf(e.Body...)) - } - conn.outLck.RLock() - if !conn.closed { - conn.out <- msg - } - conn.outLck.RUnlock() -} - -// sendReply creates a method reply message corresponding to the parameters and -// sends it to conn.out. -func (conn *Conn) sendReply(dest string, serial uint32, values ...interface{}) { - msg := new(Message) - msg.Type = TypeMethodReply - msg.serial = conn.getSerial() - msg.Headers = make(map[HeaderField]Variant) - if dest != "" { - msg.Headers[FieldDestination] = MakeVariant(dest) - } - msg.Headers[FieldReplySerial] = MakeVariant(serial) - msg.Body = values - if len(values) > 0 { - msg.Headers[FieldSignature] = MakeVariant(SignatureOf(values...)) - } - conn.outLck.RLock() - if !conn.closed { - conn.out <- msg - } - conn.outLck.RUnlock() -} - -// Signal registers the given channel to be passed all received signal messages. -// The caller has to make sure that ch is sufficiently buffered; if a message -// arrives when a write to c is not possible, it is discarded. -// -// Multiple of these channels can be registered at the same time. Passing a -// channel that already is registered will remove it from the list of the -// registered channels. -// -// These channels are "overwritten" by Eavesdrop; i.e., if there currently is a -// channel for eavesdropped messages, this channel receives all signals, and -// none of the channels passed to Signal will receive any signals. -func (conn *Conn) Signal(ch chan<- *Signal) { - conn.signalsLck.Lock() - conn.signals = append(conn.signals, ch) - conn.signalsLck.Unlock() -} - -// SupportsUnixFDs returns whether the underlying transport supports passing of -// unix file descriptors. If this is false, method calls containing unix file -// descriptors will return an error and emitted signals containing them will -// not be sent. -func (conn *Conn) SupportsUnixFDs() bool { - return conn.unixFD -} - -// Error represents a D-Bus message of type Error. -type Error struct { - Name string - Body []interface{} -} - -func NewError(name string, body []interface{}) *Error { - return &Error{name, body} -} - -func (e Error) Error() string { - if len(e.Body) >= 1 { - s, ok := e.Body[0].(string) - if ok { - return s - } - } - return e.Name -} - -// Signal represents a D-Bus message of type Signal. The name member is given in -// "interface.member" notation, e.g. org.freedesktop.D-Bus.NameLost. -type Signal struct { - Sender string - Path ObjectPath - Name string - Body []interface{} -} - -// transport is a D-Bus transport. -type transport interface { - // Read and Write raw data (for example, for the authentication protocol). - io.ReadWriteCloser - - // Send the initial null byte used for the EXTERNAL mechanism. - SendNullByte() error - - // Returns whether this transport supports passing Unix FDs. - SupportsUnixFDs() bool - - // Signal the transport that Unix FD passing is enabled for this connection. - EnableUnixFDs() - - // Read / send a message, handling things like Unix FDs. - ReadMessage() (*Message, error) - SendMessage(*Message) error -} - -var ( - transports = make(map[string]func(string) (transport, error)) -) - -func getTransport(address string) (transport, error) { - var err error - var t transport - - addresses := strings.Split(address, ";") - for _, v := range addresses { - i := strings.IndexRune(v, ':') - if i == -1 { - err = errors.New("dbus: invalid bus address (no transport)") - continue - } - f := transports[v[:i]] - if f == nil { - err = errors.New("dbus: invalid bus address (invalid or unsupported transport)") - continue - } - t, err = f(v[i+1:]) - if err == nil { - return t, nil - } - } - return nil, err -} - -// dereferenceAll returns a slice that, assuming that vs is a slice of pointers -// of arbitrary types, containes the values that are obtained from dereferencing -// all elements in vs. -func dereferenceAll(vs []interface{}) []interface{} { - for i := range vs { - v := reflect.ValueOf(vs[i]) - v = v.Elem() - vs[i] = v.Interface() - } - return vs -} - -// getKey gets a key from a the list of keys. Returns "" on error / not found... -func getKey(s, key string) string { - i := strings.Index(s, key) - if i == -1 { - return "" - } - if i+len(key)+1 >= len(s) || s[i+len(key)] != '=' { - return "" - } - j := strings.Index(s, ",") - if j == -1 { - j = len(s) - } - return s[i+len(key)+1 : j] -} diff --git a/vendor/github.com/godbus/dbus/conn_darwin.go b/vendor/github.com/godbus/dbus/conn_darwin.go deleted file mode 100644 index b67bb1b81..000000000 --- a/vendor/github.com/godbus/dbus/conn_darwin.go +++ /dev/null @@ -1,21 +0,0 @@ -package dbus - -import ( - "errors" - "os/exec" -) - -func sessionBusPlatform() (*Conn, error) { - cmd := exec.Command("launchctl", "getenv", "DBUS_LAUNCHD_SESSION_BUS_SOCKET") - b, err := cmd.CombinedOutput() - - if err != nil { - return nil, err - } - - if len(b) == 0 { - return nil, errors.New("dbus: couldn't determine address of session bus") - } - - return Dial("unix:path=" + string(b[:len(b)-1])) -} diff --git a/vendor/github.com/godbus/dbus/conn_other.go b/vendor/github.com/godbus/dbus/conn_other.go deleted file mode 100644 index f74b8758d..000000000 --- a/vendor/github.com/godbus/dbus/conn_other.go +++ /dev/null @@ -1,27 +0,0 @@ -// +build !darwin - -package dbus - -import ( - "bytes" - "errors" - "os/exec" -) - -func sessionBusPlatform() (*Conn, error) { - cmd := exec.Command("dbus-launch") - b, err := cmd.CombinedOutput() - - if err != nil { - return nil, err - } - - i := bytes.IndexByte(b, '=') - j := bytes.IndexByte(b, '\n') - - if i == -1 || j == -1 { - return nil, errors.New("dbus: couldn't determine address of session bus") - } - - return Dial(string(b[i+1 : j])) -} diff --git a/vendor/github.com/godbus/dbus/dbus.go b/vendor/github.com/godbus/dbus/dbus.go deleted file mode 100644 index 2ce68735c..000000000 --- a/vendor/github.com/godbus/dbus/dbus.go +++ /dev/null @@ -1,258 +0,0 @@ -package dbus - -import ( - "errors" - "reflect" - "strings" -) - -var ( - byteType = reflect.TypeOf(byte(0)) - boolType = reflect.TypeOf(false) - uint8Type = reflect.TypeOf(uint8(0)) - int16Type = reflect.TypeOf(int16(0)) - uint16Type = reflect.TypeOf(uint16(0)) - int32Type = reflect.TypeOf(int32(0)) - uint32Type = reflect.TypeOf(uint32(0)) - int64Type = reflect.TypeOf(int64(0)) - uint64Type = reflect.TypeOf(uint64(0)) - float64Type = reflect.TypeOf(float64(0)) - stringType = reflect.TypeOf("") - signatureType = reflect.TypeOf(Signature{""}) - objectPathType = reflect.TypeOf(ObjectPath("")) - variantType = reflect.TypeOf(Variant{Signature{""}, nil}) - interfacesType = reflect.TypeOf([]interface{}{}) - unixFDType = reflect.TypeOf(UnixFD(0)) - unixFDIndexType = reflect.TypeOf(UnixFDIndex(0)) -) - -// An InvalidTypeError signals that a value which cannot be represented in the -// D-Bus wire format was passed to a function. -type InvalidTypeError struct { - Type reflect.Type -} - -func (e InvalidTypeError) Error() string { - return "dbus: invalid type " + e.Type.String() -} - -// Store copies the values contained in src to dest, which must be a slice of -// pointers. It converts slices of interfaces from src to corresponding structs -// in dest. An error is returned if the lengths of src and dest or the types of -// their elements don't match. -func Store(src []interface{}, dest ...interface{}) error { - if len(src) != len(dest) { - return errors.New("dbus.Store: length mismatch") - } - - for i := range src { - if err := store(src[i], dest[i]); err != nil { - return err - } - } - return nil -} - -func store(src, dest interface{}) error { - if reflect.TypeOf(dest).Elem() == reflect.TypeOf(src) { - reflect.ValueOf(dest).Elem().Set(reflect.ValueOf(src)) - return nil - } else if hasStruct(dest) { - rv := reflect.ValueOf(dest).Elem() - switch rv.Kind() { - case reflect.Struct: - vs, ok := src.([]interface{}) - if !ok { - return errors.New("dbus.Store: type mismatch") - } - t := rv.Type() - ndest := make([]interface{}, 0, rv.NumField()) - for i := 0; i < rv.NumField(); i++ { - field := t.Field(i) - if field.PkgPath == "" && field.Tag.Get("dbus") != "-" { - ndest = append(ndest, rv.Field(i).Addr().Interface()) - } - } - if len(vs) != len(ndest) { - return errors.New("dbus.Store: type mismatch") - } - err := Store(vs, ndest...) - if err != nil { - return errors.New("dbus.Store: type mismatch") - } - case reflect.Slice: - sv := reflect.ValueOf(src) - if sv.Kind() != reflect.Slice { - return errors.New("dbus.Store: type mismatch") - } - rv.Set(reflect.MakeSlice(rv.Type(), sv.Len(), sv.Len())) - for i := 0; i < sv.Len(); i++ { - if err := store(sv.Index(i).Interface(), rv.Index(i).Addr().Interface()); err != nil { - return err - } - } - case reflect.Map: - sv := reflect.ValueOf(src) - if sv.Kind() != reflect.Map { - return errors.New("dbus.Store: type mismatch") - } - keys := sv.MapKeys() - rv.Set(reflect.MakeMap(sv.Type())) - for _, key := range keys { - v := reflect.New(sv.Type().Elem()) - if err := store(v, sv.MapIndex(key).Interface()); err != nil { - return err - } - rv.SetMapIndex(key, v.Elem()) - } - default: - return errors.New("dbus.Store: type mismatch") - } - return nil - } else { - return errors.New("dbus.Store: type mismatch") - } -} - -func hasStruct(v interface{}) bool { - t := reflect.TypeOf(v) - for { - switch t.Kind() { - case reflect.Struct: - return true - case reflect.Slice, reflect.Ptr, reflect.Map: - t = t.Elem() - default: - return false - } - } -} - -// An ObjectPath is an object path as defined by the D-Bus spec. -type ObjectPath string - -// IsValid returns whether the object path is valid. -func (o ObjectPath) IsValid() bool { - s := string(o) - if len(s) == 0 { - return false - } - if s[0] != '/' { - return false - } - if s[len(s)-1] == '/' && len(s) != 1 { - return false - } - // probably not used, but technically possible - if s == "/" { - return true - } - split := strings.Split(s[1:], "/") - for _, v := range split { - if len(v) == 0 { - return false - } - for _, c := range v { - if !isMemberChar(c) { - return false - } - } - } - return true -} - -// A UnixFD is a Unix file descriptor sent over the wire. See the package-level -// documentation for more information about Unix file descriptor passsing. -type UnixFD int32 - -// A UnixFDIndex is the representation of a Unix file descriptor in a message. -type UnixFDIndex uint32 - -// alignment returns the alignment of values of type t. -func alignment(t reflect.Type) int { - switch t { - case variantType: - return 1 - case objectPathType: - return 4 - case signatureType: - return 1 - case interfacesType: // sometimes used for structs - return 8 - } - switch t.Kind() { - case reflect.Uint8: - return 1 - case reflect.Uint16, reflect.Int16: - return 2 - case reflect.Uint32, reflect.Int32, reflect.String, reflect.Array, reflect.Slice, reflect.Map: - return 4 - case reflect.Uint64, reflect.Int64, reflect.Float64, reflect.Struct: - return 8 - case reflect.Ptr: - return alignment(t.Elem()) - } - return 1 -} - -// isKeyType returns whether t is a valid type for a D-Bus dict. -func isKeyType(t reflect.Type) bool { - switch t.Kind() { - case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, - reflect.Int16, reflect.Int32, reflect.Int64, reflect.Float64, - reflect.String: - - return true - } - return false -} - -// isValidInterface returns whether s is a valid name for an interface. -func isValidInterface(s string) bool { - if len(s) == 0 || len(s) > 255 || s[0] == '.' { - return false - } - elem := strings.Split(s, ".") - if len(elem) < 2 { - return false - } - for _, v := range elem { - if len(v) == 0 { - return false - } - if v[0] >= '0' && v[0] <= '9' { - return false - } - for _, c := range v { - if !isMemberChar(c) { - return false - } - } - } - return true -} - -// isValidMember returns whether s is a valid name for a member. -func isValidMember(s string) bool { - if len(s) == 0 || len(s) > 255 { - return false - } - i := strings.Index(s, ".") - if i != -1 { - return false - } - if s[0] >= '0' && s[0] <= '9' { - return false - } - for _, c := range s { - if !isMemberChar(c) { - return false - } - } - return true -} - -func isMemberChar(c rune) bool { - return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') || - (c >= 'a' && c <= 'z') || c == '_' -} diff --git a/vendor/github.com/godbus/dbus/decoder.go b/vendor/github.com/godbus/dbus/decoder.go deleted file mode 100644 index ef50dcab9..000000000 --- a/vendor/github.com/godbus/dbus/decoder.go +++ /dev/null @@ -1,228 +0,0 @@ -package dbus - -import ( - "encoding/binary" - "io" - "reflect" -) - -type decoder struct { - in io.Reader - order binary.ByteOrder - pos 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 { - dec := new(decoder) - dec.in = in - dec.order = order - return dec -} - -// align aligns the input to the given boundary and panics on error. -func (dec *decoder) align(n int) { - if dec.pos%n != 0 { - newpos := (dec.pos + n - 1) & ^(n - 1) - empty := make([]byte, newpos-dec.pos) - if _, err := io.ReadFull(dec.in, empty); err != nil { - panic(err) - } - dec.pos = newpos - } -} - -// Calls binary.Read(dec.in, dec.order, v) and panics on read errors. -func (dec *decoder) binread(v interface{}) { - if err := binary.Read(dec.in, dec.order, v); err != nil { - panic(err) - } -} - -func (dec *decoder) Decode(sig Signature) (vs []interface{}, err error) { - defer func() { - var ok bool - v := recover() - if err, ok = v.(error); ok { - if err == io.EOF || err == io.ErrUnexpectedEOF { - err = FormatError("unexpected EOF") - } - } - }() - vs = make([]interface{}, 0) - s := sig.str - for s != "" { - err, rem := validSingle(s, 0) - if err != nil { - return nil, err - } - v := dec.decode(s[:len(s)-len(rem)], 0) - vs = append(vs, v) - s = rem - } - return vs, nil -} - -func (dec *decoder) decode(s string, depth int) interface{} { - dec.align(alignment(typeFor(s))) - switch s[0] { - case 'y': - var b [1]byte - if _, err := dec.in.Read(b[:]); err != nil { - panic(err) - } - dec.pos++ - return b[0] - case 'b': - i := dec.decode("u", depth).(uint32) - switch { - case i == 0: - return false - case i == 1: - return true - default: - panic(FormatError("invalid value for boolean")) - } - case 'n': - var i int16 - dec.binread(&i) - dec.pos += 2 - return i - case 'i': - var i int32 - dec.binread(&i) - dec.pos += 4 - return i - case 'x': - var i int64 - dec.binread(&i) - dec.pos += 8 - return i - case 'q': - var i uint16 - dec.binread(&i) - dec.pos += 2 - return i - case 'u': - var i uint32 - dec.binread(&i) - dec.pos += 4 - return i - case 't': - var i uint64 - dec.binread(&i) - dec.pos += 8 - return i - case 'd': - var f float64 - dec.binread(&f) - dec.pos += 8 - return f - case 's': - length := dec.decode("u", depth).(uint32) - b := make([]byte, int(length)+1) - if _, err := io.ReadFull(dec.in, b); err != nil { - panic(err) - } - dec.pos += int(length) + 1 - return string(b[:len(b)-1]) - case 'o': - return ObjectPath(dec.decode("s", depth).(string)) - case 'g': - length := dec.decode("y", depth).(byte) - b := make([]byte, int(length)+1) - if _, err := io.ReadFull(dec.in, b); err != nil { - panic(err) - } - dec.pos += int(length) + 1 - sig, err := ParseSignature(string(b[:len(b)-1])) - if err != nil { - panic(err) - } - return sig - case 'v': - if depth >= 64 { - panic(FormatError("input exceeds container depth limit")) - } - var variant Variant - sig := dec.decode("g", depth).(Signature) - if len(sig.str) == 0 { - panic(FormatError("variant signature is empty")) - } - err, rem := validSingle(sig.str, 0) - if err != nil { - panic(err) - } - if rem != "" { - panic(FormatError("variant signature has multiple types")) - } - variant.sig = sig - variant.value = dec.decode(sig.str, depth+1) - return variant - case 'h': - return UnixFDIndex(dec.decode("u", depth).(uint32)) - case 'a': - if len(s) > 1 && s[1] == '{' { - ksig := s[2:3] - vsig := s[3 : len(s)-1] - v := reflect.MakeMap(reflect.MapOf(typeFor(ksig), typeFor(vsig))) - if depth >= 63 { - panic(FormatError("input exceeds container depth limit")) - } - length := dec.decode("u", depth).(uint32) - // Even for empty maps, the correct padding must be included - dec.align(8) - spos := dec.pos - for dec.pos < spos+int(length) { - dec.align(8) - if !isKeyType(v.Type().Key()) { - panic(InvalidTypeError{v.Type()}) - } - kv := dec.decode(ksig, depth+2) - vv := dec.decode(vsig, depth+2) - v.SetMapIndex(reflect.ValueOf(kv), reflect.ValueOf(vv)) - } - return v.Interface() - } - if depth >= 64 { - panic(FormatError("input exceeds container depth limit")) - } - length := dec.decode("u", depth).(uint32) - v := reflect.MakeSlice(reflect.SliceOf(typeFor(s[1:])), 0, int(length)) - // Even for empty arrays, the correct padding must be included - dec.align(alignment(typeFor(s[1:]))) - spos := dec.pos - for dec.pos < spos+int(length) { - ev := dec.decode(s[1:], depth+1) - v = reflect.Append(v, reflect.ValueOf(ev)) - } - return v.Interface() - case '(': - if depth >= 64 { - panic(FormatError("input exceeds container depth limit")) - } - dec.align(8) - v := make([]interface{}, 0) - s = s[1 : len(s)-1] - for s != "" { - err, rem := validSingle(s, 0) - if err != nil { - panic(err) - } - ev := dec.decode(s[:len(s)-len(rem)], depth+1) - v = append(v, ev) - s = rem - } - return v - default: - panic(SignatureError{Sig: s}) - } -} - -// A FormatError is an error in the wire format. -type FormatError string - -func (e FormatError) Error() string { - return "dbus: wire format error: " + string(e) -} diff --git a/vendor/github.com/godbus/dbus/doc.go b/vendor/github.com/godbus/dbus/doc.go deleted file mode 100644 index deff554a3..000000000 --- a/vendor/github.com/godbus/dbus/doc.go +++ /dev/null @@ -1,63 +0,0 @@ -/* -Package dbus implements bindings to the D-Bus message bus system. - -To use the message bus API, you first need to connect to a bus (usually the -session or system bus). The acquired connection then can be used to call methods -on remote objects and emit or receive signals. Using the Export method, you can -arrange D-Bus methods calls to be directly translated to method calls on a Go -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 -respective D-Bus equivalents: - - Go type | D-Bus type - ------------+----------- - byte | BYTE - bool | BOOLEAN - int16 | INT16 - uint16 | UINT16 - int32 | INT32 - uint32 | UINT32 - int64 | INT64 - uint64 | UINT64 - float64 | DOUBLE - string | STRING - ObjectPath | OBJECT_PATH - Signature | SIGNATURE - Variant | VARIANT - UnixFDIndex | UNIX_FD - -Slices and arrays encode as ARRAYs of their element type. - -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 -be skipped. - -Pointers encode as the value they're pointed to. - -Trying to encode any other type or a slice, map or struct containing an -unsupported type will result in an InvalidTypeError. - -For incoming messages, the inverse of these rules are used, with the exception -of STRUCTs. Incoming STRUCTS are represented as a slice of empty interfaces -containing the struct fields in the correct order. The Store function can be -used to convert such values to Go structs. - -Unix FD passing - -Handling Unix file descriptors deserves special mention. To use them, you should -first check that they are supported on a connection by calling SupportsUnixFDs. -If it returns true, all method of Connection will translate messages containing -UnixFD's to messages that are accompanied by the given file descriptors with the -UnixFD values being substituted by the correct indices. Similarily, the indices -of incoming messages are automatically resolved. It shouldn't be necessary to use -UnixFDIndex. - -*/ -package dbus diff --git a/vendor/github.com/godbus/dbus/encoder.go b/vendor/github.com/godbus/dbus/encoder.go deleted file mode 100644 index 9f0a9e89e..000000000 --- a/vendor/github.com/godbus/dbus/encoder.go +++ /dev/null @@ -1,208 +0,0 @@ -package dbus - -import ( - "bytes" - "encoding/binary" - "io" - "reflect" -) - -// An encoder encodes values to the D-Bus wire format. -type encoder struct { - out io.Writer - 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) -} - -// 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 { - enc := new(encoder) - enc.out = out - enc.order = order - enc.pos = offset - return enc -} - -// Aligns the next output to be on a multiple of n. Panics on write errors. -func (enc *encoder) align(n int) { - pad := enc.padding(0, n) - if pad > 0 { - empty := make([]byte, pad) - if _, err := enc.out.Write(empty); err != nil { - panic(err) - } - enc.pos += pad - } -} - -// pad returns the number of bytes of padding, based on current position and additional offset. -// and alignment. -func (enc *encoder) padding(offset, algn int) int { - abs := enc.pos + offset - if abs%algn != 0 { - newabs := (abs + algn - 1) & ^(algn - 1) - return newabs - abs - } - return 0 -} - -// Calls binary.Write(enc.out, enc.order, v) and panics on write errors. -func (enc *encoder) binwrite(v interface{}) { - if err := binary.Write(enc.out, enc.order, v); err != nil { - panic(err) - } -} - -// Encode encodes the given values to the underyling reader. All written values -// are aligned properly as required by the D-Bus spec. -func (enc *encoder) Encode(vs ...interface{}) (err error) { - defer func() { - err, _ = recover().(error) - }() - for _, v := range vs { - enc.encode(reflect.ValueOf(v), 0) - } - return nil -} - -// 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) { - enc.align(alignment(v.Type())) - switch v.Kind() { - case reflect.Uint8: - var b [1]byte - b[0] = byte(v.Uint()) - if _, err := enc.out.Write(b[:]); err != nil { - panic(err) - } - enc.pos++ - case reflect.Bool: - if v.Bool() { - enc.encode(reflect.ValueOf(uint32(1)), depth) - } else { - enc.encode(reflect.ValueOf(uint32(0)), depth) - } - case reflect.Int16: - enc.binwrite(int16(v.Int())) - enc.pos += 2 - case reflect.Uint16: - enc.binwrite(uint16(v.Uint())) - enc.pos += 2 - case reflect.Int32: - enc.binwrite(int32(v.Int())) - enc.pos += 4 - case reflect.Uint32: - enc.binwrite(uint32(v.Uint())) - enc.pos += 4 - case reflect.Int64: - enc.binwrite(v.Int()) - enc.pos += 8 - case reflect.Uint64: - enc.binwrite(v.Uint()) - enc.pos += 8 - case reflect.Float64: - enc.binwrite(v.Float()) - enc.pos += 8 - case reflect.String: - enc.encode(reflect.ValueOf(uint32(len(v.String()))), depth) - b := make([]byte, v.Len()+1) - copy(b, v.String()) - b[len(b)-1] = 0 - n, err := enc.out.Write(b) - if err != nil { - panic(err) - } - enc.pos += n - 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) - - for i := 0; i < v.Len(); i++ { - bufenc.encode(v.Index(i), depth+1) - } - enc.encode(reflect.ValueOf(uint32(buf.Len())), depth) - length := buf.Len() - enc.align(alignment(v.Type().Elem())) - if _, err := buf.WriteTo(enc.out); err != nil { - panic(err) - } - 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) - b := make([]byte, str.Len()+1) - copy(b, str.String()) - b[len(b)-1] = 0 - n, err := enc.out.Write(b) - if err != nil { - panic(err) - } - enc.pos += n - case variantType: - variant := v.Interface().(Variant) - enc.encode(reflect.ValueOf(variant.sig), depth+1) - enc.encode(reflect.ValueOf(variant.value), depth+1) - default: - for i := 0; i < v.Type().NumField(); i++ { - field := t.Field(i) - if field.PkgPath == "" && field.Tag.Get("dbus") != "-" { - enc.encode(v.Field(i), depth+1) - } - } - } - 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()}) - } - keys := v.MapKeys() - // Lookahead offset: 4 bytes for uint32 length (with alignment), - // plus 8-byte alignment - n := enc.padding(0, 4) + 4 - offset := enc.pos + n + enc.padding(n, 8) - - var buf bytes.Buffer - bufenc := newEncoderAtOffset(&buf, offset, enc.order) - for _, k := range keys { - bufenc.align(8) - bufenc.encode(k, depth+2) - bufenc.encode(v.MapIndex(k), depth+2) - } - enc.encode(reflect.ValueOf(uint32(buf.Len())), depth) - length := buf.Len() - enc.align(8) - if _, err := buf.WriteTo(enc.out); err != nil { - panic(err) - } - enc.pos += length - default: - panic(InvalidTypeError{v.Type()}) - } -} diff --git a/vendor/github.com/godbus/dbus/export.go b/vendor/github.com/godbus/dbus/export.go deleted file mode 100644 index c6440a741..000000000 --- a/vendor/github.com/godbus/dbus/export.go +++ /dev/null @@ -1,411 +0,0 @@ -package dbus - -import ( - "errors" - "fmt" - "reflect" - "strings" -) - -var ( - errmsgInvalidArg = Error{ - "org.freedesktop.DBus.Error.InvalidArgs", - []interface{}{"Invalid type / number of args"}, - } - errmsgNoObject = Error{ - "org.freedesktop.DBus.Error.NoSuchObject", - []interface{}{"No such object"}, - } - errmsgUnknownMethod = Error{ - "org.freedesktop.DBus.Error.UnknownMethod", - []interface{}{"Unknown / invalid method"}, - } -) - -// exportWithMapping represents an exported struct along with a method name -// mapping to allow for exporting lower-case methods, etc. -type exportWithMapping struct { - export interface{} - - // Method name mapping; key -> struct method, value -> dbus method. - mapping map[string]string - - // Whether or not this export is for the entire subtree - includeSubtree bool -} - -// Sender is a type which can be used in exported methods to receive the message -// sender. -type Sender string - -func exportedMethod(export exportWithMapping, name string) reflect.Value { - if export.export == nil { - return reflect.Value{} - } - - // If a mapping was included in the export, check the map to see if we - // should be looking for a different method in the export. - if export.mapping != nil { - for key, value := range export.mapping { - if value == name { - name = key - break - } - - // Catch the case where a method is aliased but the client is calling - // the original, e.g. the "Foo" method was exported mapped to - // "foo," and dbus client called the original "Foo." - if key == name { - return reflect.Value{} - } - } - } - - value := reflect.ValueOf(export.export) - m := value.MethodByName(name) - - // Catch the case of attempting to call an unexported method - method, ok := value.Type().MethodByName(name) - - if !m.IsValid() || !ok || method.PkgPath != "" { - return reflect.Value{} - } - t := m.Type() - if t.NumOut() == 0 || - t.Out(t.NumOut()-1) != reflect.TypeOf(&errmsgInvalidArg) { - - return reflect.Value{} - } - return m -} - -// searchHandlers will look through all registered handlers looking for one -// to handle the given path. If a verbatim one isn't found, it will check for -// a subtree registration for the path as well. -func (conn *Conn) searchHandlers(path ObjectPath) (map[string]exportWithMapping, bool) { - conn.handlersLck.RLock() - defer conn.handlersLck.RUnlock() - - handlers, ok := conn.handlers[path] - if ok { - return handlers, ok - } - - // If handlers weren't found for this exact path, look for a matching subtree - // registration - handlers = make(map[string]exportWithMapping) - path = path[:strings.LastIndex(string(path), "/")] - for len(path) > 0 { - var subtreeHandlers map[string]exportWithMapping - subtreeHandlers, ok = conn.handlers[path] - if ok { - for iface, handler := range subtreeHandlers { - // Only include this handler if it registered for the subtree - if handler.includeSubtree { - handlers[iface] = handler - } - } - - break - } - - path = path[:strings.LastIndex(string(path), "/")] - } - - return handlers, ok -} - -// handleCall handles the given method call (i.e. looks if it's one of the -// pre-implemented ones and searches for a corresponding handler if not). -func (conn *Conn) handleCall(msg *Message) { - name := msg.Headers[FieldMember].value.(string) - path := msg.Headers[FieldPath].value.(ObjectPath) - ifaceName, hasIface := msg.Headers[FieldInterface].value.(string) - sender, hasSender := msg.Headers[FieldSender].value.(string) - serial := msg.serial - if ifaceName == "org.freedesktop.DBus.Peer" { - switch name { - case "Ping": - conn.sendReply(sender, serial) - case "GetMachineId": - conn.sendReply(sender, serial, conn.uuid) - default: - conn.sendError(errmsgUnknownMethod, sender, serial) - } - return - } - if len(name) == 0 { - conn.sendError(errmsgUnknownMethod, sender, serial) - } - - // Find the exported handler (if any) for this path - handlers, ok := conn.searchHandlers(path) - if !ok { - conn.sendError(errmsgNoObject, sender, serial) - return - } - - var m reflect.Value - if hasIface { - iface := handlers[ifaceName] - m = exportedMethod(iface, name) - } else { - for _, v := range handlers { - m = exportedMethod(v, name) - if m.IsValid() { - break - } - } - } - - if !m.IsValid() { - conn.sendError(errmsgUnknownMethod, sender, serial) - return - } - - t := m.Type() - vs := msg.Body - pointers := make([]interface{}, t.NumIn()) - decode := make([]interface{}, 0, len(vs)) - for i := 0; i < t.NumIn(); i++ { - tp := t.In(i) - val := reflect.New(tp) - pointers[i] = val.Interface() - if tp == reflect.TypeOf((*Sender)(nil)).Elem() { - val.Elem().SetString(sender) - } else if tp == reflect.TypeOf((*Message)(nil)).Elem() { - val.Elem().Set(reflect.ValueOf(*msg)) - } else { - decode = append(decode, pointers[i]) - } - } - - if len(decode) != len(vs) { - conn.sendError(errmsgInvalidArg, sender, serial) - return - } - - if err := Store(vs, decode...); err != nil { - conn.sendError(errmsgInvalidArg, sender, serial) - return - } - - // Extract parameters - params := make([]reflect.Value, len(pointers)) - for i := 0; i < len(pointers); i++ { - params[i] = reflect.ValueOf(pointers[i]).Elem() - } - - // Call method - ret := m.Call(params) - if em := ret[t.NumOut()-1].Interface().(*Error); em != nil { - conn.sendError(*em, sender, serial) - return - } - - if msg.Flags&FlagNoReplyExpected == 0 { - reply := new(Message) - reply.Type = TypeMethodReply - reply.serial = conn.getSerial() - reply.Headers = make(map[HeaderField]Variant) - if hasSender { - reply.Headers[FieldDestination] = msg.Headers[FieldSender] - } - reply.Headers[FieldReplySerial] = MakeVariant(msg.serial) - reply.Body = make([]interface{}, len(ret)-1) - for i := 0; i < len(ret)-1; i++ { - reply.Body[i] = ret[i].Interface() - } - if len(ret) != 1 { - reply.Headers[FieldSignature] = MakeVariant(SignatureOf(reply.Body...)) - } - conn.outLck.RLock() - if !conn.closed { - conn.out <- reply - } - conn.outLck.RUnlock() - } -} - -// 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.serial = conn.getSerial() - msg.Headers = make(map[HeaderField]Variant) - msg.Headers[FieldInterface] = MakeVariant(iface) - msg.Headers[FieldMember] = MakeVariant(member) - msg.Headers[FieldPath] = MakeVariant(path) - msg.Body = values - if len(values) > 0 { - msg.Headers[FieldSignature] = MakeVariant(SignatureOf(values...)) - } - conn.outLck.RLock() - defer conn.outLck.RUnlock() - if conn.closed { - return ErrClosed - } - conn.out <- msg - return nil -} - -// Export registers the given value to be exported as an object on the -// message bus. -// -// If a method call on the given path and interface is received, an exported -// method with the same name is called with v as the receiver if the -// parameters match and the last return value is of type *Error. If this -// *Error is not nil, it is sent back to the caller as an error. -// Otherwise, a method reply is sent with the other return values as its body. -// -// Any parameters with the special type Sender are set to the sender of the -// dbus message when the method is called. Parameters of this type do not -// contribute to the dbus signature of the method (i.e. the method is exposed -// as if the parameters of type Sender were not there). -// -// Similarly, any parameters with the type Message are set to the raw message -// received on the bus. Again, parameters of this type do not contribute to the -// dbus signature of the method. -// -// Every method call is executed in a new goroutine, so the method may be called -// in multiple goroutines at once. -// -// Method calls on the interface org.freedesktop.DBus.Peer will be automatically -// handled for every object. -// -// Passing nil as the first parameter will cause conn to cease handling calls on -// the given combination of path and interface. -// -// Export returns an error if path is not a valid path name. -func (conn *Conn) Export(v interface{}, path ObjectPath, iface string) error { - return conn.ExportWithMap(v, nil, path, iface) -} - -// ExportWithMap works exactly like Export but provides the ability to remap -// method names (e.g. export a lower-case method). -// -// The keys in the map are the real method names (exported on the struct), and -// the values are the method names to be exported on DBus. -func (conn *Conn) ExportWithMap(v interface{}, mapping map[string]string, path ObjectPath, iface string) error { - return conn.exportWithMap(v, mapping, path, iface, false) -} - -// ExportSubtree works exactly like Export but registers the given value for -// an entire subtree rather under the root path provided. -// -// In order to make this useful, one parameter in each of the value's exported -// methods should be a Message, in which case it will contain the raw message -// (allowing one to get access to the path that caused the method to be called). -// -// Note that more specific export paths take precedence over less specific. For -// example, a method call using the ObjectPath /foo/bar/baz will call a method -// exported on /foo/bar before a method exported on /foo. -func (conn *Conn) ExportSubtree(v interface{}, path ObjectPath, iface string) error { - return conn.ExportSubtreeWithMap(v, nil, path, iface) -} - -// ExportSubtreeWithMap works exactly like ExportSubtree but provides the -// ability to remap method names (e.g. export a lower-case method). -// -// The keys in the map are the real method names (exported on the struct), and -// the values are the method names to be exported on DBus. -func (conn *Conn) ExportSubtreeWithMap(v interface{}, mapping map[string]string, path ObjectPath, iface string) error { - return conn.exportWithMap(v, mapping, path, iface, true) -} - -// exportWithMap is the worker function for all exports/registrations. -func (conn *Conn) exportWithMap(v interface{}, mapping map[string]string, path ObjectPath, iface string, includeSubtree bool) error { - if !path.IsValid() { - return fmt.Errorf(`dbus: Invalid path name: "%s"`, path) - } - - conn.handlersLck.Lock() - defer conn.handlersLck.Unlock() - - // Remove a previous export if the interface is nil - if v == nil { - if _, ok := conn.handlers[path]; ok { - delete(conn.handlers[path], iface) - if len(conn.handlers[path]) == 0 { - delete(conn.handlers, path) - } - } - - return nil - } - - // If this is the first handler for this path, make a new map to hold all - // handlers for this path. - if _, ok := conn.handlers[path]; !ok { - conn.handlers[path] = make(map[string]exportWithMapping) - } - - // Finally, save this handler - conn.handlers[path][iface] = exportWithMapping{export: v, mapping: mapping, includeSubtree: includeSubtree} - - return nil -} - -// ReleaseName calls org.freedesktop.DBus.ReleaseName and awaits a response. -func (conn *Conn) ReleaseName(name string) (ReleaseNameReply, error) { - var r uint32 - err := conn.busObj.Call("org.freedesktop.DBus.ReleaseName", 0, name).Store(&r) - if err != nil { - return 0, err - } - return ReleaseNameReply(r), nil -} - -// RequestName calls org.freedesktop.DBus.RequestName and awaits a response. -func (conn *Conn) RequestName(name string, flags RequestNameFlags) (RequestNameReply, error) { - var r uint32 - err := conn.busObj.Call("org.freedesktop.DBus.RequestName", 0, name, flags).Store(&r) - if err != nil { - return 0, err - } - return RequestNameReply(r), nil -} - -// ReleaseNameReply is the reply to a ReleaseName call. -type ReleaseNameReply uint32 - -const ( - ReleaseNameReplyReleased ReleaseNameReply = 1 + iota - ReleaseNameReplyNonExistent - ReleaseNameReplyNotOwner -) - -// RequestNameFlags represents the possible flags for a RequestName call. -type RequestNameFlags uint32 - -const ( - NameFlagAllowReplacement RequestNameFlags = 1 << iota - NameFlagReplaceExisting - NameFlagDoNotQueue -) - -// RequestNameReply is the reply to a RequestName call. -type RequestNameReply uint32 - -const ( - RequestNameReplyPrimaryOwner RequestNameReply = 1 + iota - RequestNameReplyInQueue - RequestNameReplyExists - RequestNameReplyAlreadyOwner -) diff --git a/vendor/github.com/godbus/dbus/homedir.go b/vendor/github.com/godbus/dbus/homedir.go deleted file mode 100644 index 0b745f931..000000000 --- a/vendor/github.com/godbus/dbus/homedir.go +++ /dev/null @@ -1,28 +0,0 @@ -package dbus - -import ( - "os" - "sync" -) - -var ( - homeDir string - homeDirLock sync.Mutex -) - -func getHomeDir() string { - homeDirLock.Lock() - defer homeDirLock.Unlock() - - if homeDir != "" { - return homeDir - } - - homeDir = os.Getenv("HOME") - if homeDir != "" { - return homeDir - } - - homeDir = lookupHomeDir() - return homeDir -} diff --git a/vendor/github.com/godbus/dbus/homedir_dynamic.go b/vendor/github.com/godbus/dbus/homedir_dynamic.go deleted file mode 100644 index 2732081e7..000000000 --- a/vendor/github.com/godbus/dbus/homedir_dynamic.go +++ /dev/null @@ -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 -} diff --git a/vendor/github.com/godbus/dbus/homedir_static.go b/vendor/github.com/godbus/dbus/homedir_static.go deleted file mode 100644 index b9d9cb552..000000000 --- a/vendor/github.com/godbus/dbus/homedir_static.go +++ /dev/null @@ -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 "/" -} diff --git a/vendor/github.com/godbus/dbus/message.go b/vendor/github.com/godbus/dbus/message.go deleted file mode 100644 index 075d6e38b..000000000 --- a/vendor/github.com/godbus/dbus/message.go +++ /dev/null @@ -1,346 +0,0 @@ -package dbus - -import ( - "bytes" - "encoding/binary" - "errors" - "io" - "reflect" - "strconv" -) - -const protoVersion byte = 1 - -// Flags represents the possible flags of a D-Bus message. -type Flags byte - -const ( - // FlagNoReplyExpected signals that the message is not expected to generate - // a reply. If this flag is set on outgoing messages, any possible reply - // will be discarded. - FlagNoReplyExpected Flags = 1 << iota - // FlagNoAutoStart signals that the message bus should not automatically - // start an application when handling this message. - FlagNoAutoStart -) - -// Type represents the possible types of a D-Bus message. -type Type byte - -const ( - TypeMethodCall Type = 1 + iota - TypeMethodReply - TypeError - TypeSignal - typeMax -) - -func (t Type) String() string { - switch t { - case TypeMethodCall: - return "method call" - case TypeMethodReply: - return "reply" - case TypeError: - return "error" - case TypeSignal: - return "signal" - } - return "invalid" -} - -// HeaderField represents the possible byte codes for the headers -// of a D-Bus message. -type HeaderField byte - -const ( - FieldPath HeaderField = 1 + iota - FieldInterface - FieldMember - FieldErrorName - FieldReplySerial - FieldDestination - FieldSender - FieldSignature - FieldUnixFDs - fieldMax -) - -// An InvalidMessageError describes the reason why a D-Bus message is regarded as -// invalid. -type InvalidMessageError string - -func (e InvalidMessageError) Error() string { - return "dbus: invalid message: " + string(e) -} - -// fieldType are the types of the various header fields. -var fieldTypes = [fieldMax]reflect.Type{ - FieldPath: objectPathType, - FieldInterface: stringType, - FieldMember: stringType, - FieldErrorName: stringType, - FieldReplySerial: uint32Type, - FieldDestination: stringType, - FieldSender: stringType, - FieldSignature: signatureType, - FieldUnixFDs: uint32Type, -} - -// requiredFields lists the header fields that are required by the different -// message types. -var requiredFields = [typeMax][]HeaderField{ - TypeMethodCall: {FieldPath, FieldMember}, - TypeMethodReply: {FieldReplySerial}, - TypeError: {FieldErrorName, FieldReplySerial}, - TypeSignal: {FieldPath, FieldInterface, FieldMember}, -} - -// Message represents a single D-Bus message. -type Message struct { - Type - Flags - Headers map[HeaderField]Variant - Body []interface{} - - serial uint32 -} - -type header struct { - Field byte - 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) { - var order binary.ByteOrder - var hlength, length uint32 - var typ, flags, proto byte - var headers []header - - b := make([]byte, 1) - _, err = rd.Read(b) - if err != nil { - return - } - switch b[0] { - case 'l': - order = binary.LittleEndian - case 'B': - order = binary.BigEndian - default: - return nil, InvalidMessageError("invalid byte order") - } - - dec := newDecoder(rd, order) - dec.pos = 1 - - msg = new(Message) - vs, err := dec.Decode(Signature{"yyyuu"}) - if err != nil { - return nil, err - } - if err = Store(vs, &typ, &flags, &proto, &length, &msg.serial); err != nil { - return nil, err - } - msg.Type = Type(typ) - msg.Flags = Flags(flags) - - // get the header length separately because we need it later - b = make([]byte, 4) - _, err = io.ReadFull(rd, b) - if err != nil { - return nil, err - } - binary.Read(bytes.NewBuffer(b), order, &hlength) - if hlength+length+16 > 1<<27 { - return nil, InvalidMessageError("message is too long") - } - dec = newDecoder(io.MultiReader(bytes.NewBuffer(b), rd), order) - dec.pos = 12 - vs, err = dec.Decode(Signature{"a(yv)"}) - if err != nil { - return nil, err - } - if err = Store(vs, &headers); err != nil { - return nil, err - } - - msg.Headers = make(map[HeaderField]Variant) - for _, v := range headers { - msg.Headers[HeaderField(v.Field)] = v.Variant - } - - dec.align(8) - body := make([]byte, int(length)) - if length != 0 { - _, err := io.ReadFull(rd, body) - if err != nil { - return nil, err - } - } - - if err = msg.IsValid(); err != nil { - return nil, err - } - sig, _ := msg.Headers[FieldSignature].value.(Signature) - if sig.str != "" { - buf := bytes.NewBuffer(body) - dec = newDecoder(buf, order) - vs, err := dec.Decode(sig) - if err != nil { - return nil, err - } - msg.Body = vs - } - - 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 { - if err := msg.IsValid(); err != nil { - return err - } - var vs [7]interface{} - switch order { - case binary.LittleEndian: - vs[0] = byte('l') - case binary.BigEndian: - vs[0] = byte('B') - default: - return errors.New("dbus: invalid byte order") - } - body := new(bytes.Buffer) - enc := newEncoder(body, order) - if len(msg.Body) != 0 { - enc.Encode(msg.Body...) - } - vs[1] = msg.Type - vs[2] = msg.Flags - vs[3] = protoVersion - vs[4] = uint32(len(body.Bytes())) - vs[5] = msg.serial - headers := make([]header, 0, len(msg.Headers)) - for k, v := range msg.Headers { - headers = append(headers, header{byte(k), v}) - } - vs[6] = headers - var buf bytes.Buffer - enc = newEncoder(&buf, order) - enc.Encode(vs[:]...) - enc.align(8) - body.WriteTo(&buf) - if buf.Len() > 1<<27 { - return InvalidMessageError("message is too long") - } - if _, err := buf.WriteTo(out); err != nil { - return err - } - return nil -} - -// IsValid checks whether msg is a valid message and returns an -// InvalidMessageError if it is not. -func (msg *Message) IsValid() error { - if msg.Flags & ^(FlagNoAutoStart|FlagNoReplyExpected) != 0 { - return InvalidMessageError("invalid flags") - } - if msg.Type == 0 || msg.Type >= typeMax { - return InvalidMessageError("invalid message type") - } - for k, v := range msg.Headers { - if k == 0 || k >= fieldMax { - return InvalidMessageError("invalid header") - } - if reflect.TypeOf(v.value) != fieldTypes[k] { - return InvalidMessageError("invalid type of header field") - } - } - for _, v := range requiredFields[msg.Type] { - if _, ok := msg.Headers[v]; !ok { - return InvalidMessageError("missing required header") - } - } - if path, ok := msg.Headers[FieldPath]; ok { - if !path.value.(ObjectPath).IsValid() { - return InvalidMessageError("invalid path name") - } - } - if iface, ok := msg.Headers[FieldInterface]; ok { - if !isValidInterface(iface.value.(string)) { - return InvalidMessageError("invalid interface name") - } - } - if member, ok := msg.Headers[FieldMember]; ok { - if !isValidMember(member.value.(string)) { - return InvalidMessageError("invalid member name") - } - } - if errname, ok := msg.Headers[FieldErrorName]; ok { - if !isValidInterface(errname.value.(string)) { - return InvalidMessageError("invalid error name") - } - } - if len(msg.Body) != 0 { - if _, ok := msg.Headers[FieldSignature]; !ok { - return InvalidMessageError("missing signature") - } - } - return nil -} - -// Serial returns the message's serial number. The returned value is only valid -// for messages received by eavesdropping. -func (msg *Message) Serial() uint32 { - return msg.serial -} - -// String returns a string representation of a message similar to the format of -// dbus-monitor. -func (msg *Message) String() string { - if err := msg.IsValid(); err != nil { - return "<invalid>" - } - s := msg.Type.String() - if v, ok := msg.Headers[FieldSender]; ok { - s += " from " + v.value.(string) - } - if v, ok := msg.Headers[FieldDestination]; ok { - s += " to " + v.value.(string) - } - s += " serial " + strconv.FormatUint(uint64(msg.serial), 10) - if v, ok := msg.Headers[FieldReplySerial]; ok { - s += " reply_serial " + strconv.FormatUint(uint64(v.value.(uint32)), 10) - } - if v, ok := msg.Headers[FieldUnixFDs]; ok { - s += " unixfds " + strconv.FormatUint(uint64(v.value.(uint32)), 10) - } - if v, ok := msg.Headers[FieldPath]; ok { - s += " path " + string(v.value.(ObjectPath)) - } - if v, ok := msg.Headers[FieldInterface]; ok { - s += " interface " + v.value.(string) - } - if v, ok := msg.Headers[FieldErrorName]; ok { - s += " error " + v.value.(string) - } - if v, ok := msg.Headers[FieldMember]; ok { - s += " member " + v.value.(string) - } - if len(msg.Body) != 0 { - s += "\n" - } - for i, v := range msg.Body { - s += " " + MakeVariant(v).String() - if i != len(msg.Body)-1 { - s += "\n" - } - } - return s -} diff --git a/vendor/github.com/godbus/dbus/object.go b/vendor/github.com/godbus/dbus/object.go deleted file mode 100644 index 7ef45da4c..000000000 --- a/vendor/github.com/godbus/dbus/object.go +++ /dev/null @@ -1,126 +0,0 @@ -package dbus - -import ( - "errors" - "strings" -) - -// BusObject is the interface of a remote object on which methods can be -// invoked. -type BusObject interface { - Call(method string, flags Flags, args ...interface{}) *Call - Go(method string, flags Flags, ch chan *Call, args ...interface{}) *Call - GetProperty(p string) (Variant, error) - Destination() string - Path() ObjectPath -} - -// Object represents a remote object on which methods can be invoked. -type Object struct { - conn *Conn - dest string - path ObjectPath -} - -// Call calls a method with (*Object).Go and waits for its reply. -func (o *Object) Call(method string, flags Flags, args ...interface{}) *Call { - return <-o.Go(method, flags, make(chan *Call, 1), args...).Done -} - -// Go calls a method with the given arguments asynchronously. It returns a -// Call structure representing this method call. The passed channel will -// return the same value once the call is done. If ch is nil, a new channel -// will be allocated. Otherwise, ch has to be buffered or Go will panic. -// -// If the flags include FlagNoReplyExpected, ch is ignored and a Call structure -// is returned of which only the Err member is valid. -// -// If the method parameter contains a dot ('.'), the part before the last dot -// specifies the interface on which the method is called. -func (o *Object) Go(method string, flags Flags, ch chan *Call, args ...interface{}) *Call { - iface := "" - i := strings.LastIndex(method, ".") - if i != -1 { - iface = method[:i] - } - method = method[i+1:] - msg := new(Message) - msg.Type = TypeMethodCall - msg.serial = o.conn.getSerial() - msg.Flags = flags & (FlagNoAutoStart | FlagNoReplyExpected) - msg.Headers = make(map[HeaderField]Variant) - msg.Headers[FieldPath] = MakeVariant(o.path) - msg.Headers[FieldDestination] = MakeVariant(o.dest) - msg.Headers[FieldMember] = MakeVariant(method) - if iface != "" { - msg.Headers[FieldInterface] = MakeVariant(iface) - } - msg.Body = args - if len(args) > 0 { - msg.Headers[FieldSignature] = MakeVariant(SignatureOf(args...)) - } - if msg.Flags&FlagNoReplyExpected == 0 { - if ch == nil { - ch = make(chan *Call, 10) - } else if cap(ch) == 0 { - panic("dbus: unbuffered channel passed to (*Object).Go") - } - call := &Call{ - Destination: o.dest, - Path: o.path, - Method: method, - Args: args, - Done: ch, - } - o.conn.callsLck.Lock() - o.conn.calls[msg.serial] = call - o.conn.callsLck.Unlock() - o.conn.outLck.RLock() - if o.conn.closed { - call.Err = ErrClosed - call.Done <- call - } else { - o.conn.out <- msg - } - o.conn.outLck.RUnlock() - return call - } - o.conn.outLck.RLock() - defer o.conn.outLck.RUnlock() - if o.conn.closed { - return &Call{Err: ErrClosed} - } - o.conn.out <- msg - return &Call{Err: nil} -} - -// GetProperty calls org.freedesktop.DBus.Properties.GetProperty on the given -// object. The property name must be given in interface.member notation. -func (o *Object) GetProperty(p string) (Variant, error) { - idx := strings.LastIndex(p, ".") - if idx == -1 || idx+1 == len(p) { - return Variant{}, errors.New("dbus: invalid property " + p) - } - - iface := p[:idx] - prop := p[idx+1:] - - result := Variant{} - err := o.Call("org.freedesktop.DBus.Properties.Get", 0, iface, prop).Store(&result) - - if err != nil { - return Variant{}, err - } - - return result, nil -} - -// Destination returns the destination that calls on o are sent to. -func (o *Object) Destination() string { - return o.dest -} - -// Path returns the path that calls on o are sent to. -func (o *Object) Path() ObjectPath { - return o.path -} diff --git a/vendor/github.com/godbus/dbus/sig.go b/vendor/github.com/godbus/dbus/sig.go deleted file mode 100644 index f45b53ce1..000000000 --- a/vendor/github.com/godbus/dbus/sig.go +++ /dev/null @@ -1,257 +0,0 @@ -package dbus - -import ( - "fmt" - "reflect" - "strings" -) - -var sigToType = map[byte]reflect.Type{ - 'y': byteType, - 'b': boolType, - 'n': int16Type, - 'q': uint16Type, - 'i': int32Type, - 'u': uint32Type, - 'x': int64Type, - 't': uint64Type, - 'd': float64Type, - 's': stringType, - 'g': signatureType, - 'o': objectPathType, - 'v': variantType, - 'h': unixFDIndexType, -} - -// Signature represents a correct type signature as specified by the D-Bus -// specification. The zero value represents the empty signature, "". -type Signature struct { - str string -} - -// SignatureOf returns the concatenation of all the signatures of the given -// values. It panics if one of them is not representable in D-Bus. -func SignatureOf(vs ...interface{}) Signature { - var s string - for _, v := range vs { - s += getSignature(reflect.TypeOf(v)) - } - return Signature{s} -} - -// 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)} -} - -// getSignature returns the signature of the given type and panics on unknown types. -func getSignature(t reflect.Type) string { - // handle simple types first - switch t.Kind() { - case reflect.Uint8: - return "y" - case reflect.Bool: - return "b" - case reflect.Int16: - return "n" - case reflect.Uint16: - return "q" - case reflect.Int32: - if t == unixFDType { - return "h" - } - return "i" - case reflect.Uint32: - if t == unixFDIndexType { - return "h" - } - return "u" - case reflect.Int64: - return "x" - case reflect.Uint64: - return "t" - case reflect.Float64: - return "d" - case reflect.Ptr: - return getSignature(t.Elem()) - case reflect.String: - if t == objectPathType { - return "o" - } - return "s" - case reflect.Struct: - if t == variantType { - return "v" - } else if t == signatureType { - return "g" - } - var s 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) - } - } - return "(" + s + ")" - case reflect.Array, reflect.Slice: - return "a" + getSignature(t.Elem()) - case reflect.Map: - if !isKeyType(t.Key()) { - panic(InvalidTypeError{t}) - } - return "a{" + getSignature(t.Key()) + getSignature(t.Elem()) + "}" - } - panic(InvalidTypeError{t}) -} - -// ParseSignature returns the signature represented by this string, or a -// SignatureError if the string is not a valid signature. -func ParseSignature(s string) (sig Signature, err error) { - if len(s) == 0 { - return - } - if len(s) > 255 { - return Signature{""}, SignatureError{s, "too long"} - } - sig.str = s - for err == nil && len(s) != 0 { - err, s = validSingle(s, 0) - } - if err != nil { - sig = Signature{""} - } - - return -} - -// ParseSignatureMust behaves like ParseSignature, except that it panics if s -// is not valid. -func ParseSignatureMust(s string) Signature { - sig, err := ParseSignature(s) - if err != nil { - panic(err) - } - return sig -} - -// Empty retruns whether the signature is the empty signature. -func (s Signature) Empty() bool { - return s.str == "" -} - -// Single returns whether the signature represents a single, complete type. -func (s Signature) Single() bool { - err, r := validSingle(s.str, 0) - return err != nil && r == "" -} - -// String returns the signature's string representation. -func (s Signature) String() string { - return s.str -} - -// A SignatureError indicates that a signature passed to a function or received -// on a connection is not a valid signature. -type SignatureError struct { - Sig string - Reason string -} - -func (e SignatureError) Error() string { - return fmt.Sprintf("dbus: invalid signature: %q (%s)", e.Sig, e.Reason) -} - -// Try to read a single type from this string. If it was successfull, 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) { - if s == "" { - return SignatureError{Sig: s, Reason: "empty signature"}, "" - } - if depth > 64 { - return SignatureError{Sig: s, Reason: "container nesting too deep"}, "" - } - switch s[0] { - case 'y', 'b', 'n', 'q', 'i', 'u', 'x', 't', 'd', 's', 'g', 'o', 'v', 'h': - return nil, s[1:] - case 'a': - if len(s) > 1 && s[1] == '{' { - i := findMatching(s[1:], '{', '}') - if i == -1 { - return SignatureError{Sig: s, Reason: "unmatched '{'"}, "" - } - i++ - rem = s[i+1:] - s = s[2:i] - if err, _ = validSingle(s[:1], depth+1); err != nil { - return err, "" - } - err, nr := validSingle(s[1:], depth+1) - if err != nil { - return err, "" - } - if nr != "" { - return SignatureError{Sig: s, Reason: "too many types in dict"}, "" - } - return nil, rem - } - return validSingle(s[1:], depth+1) - case '(': - i := findMatching(s, '(', ')') - if i == -1 { - return SignatureError{Sig: s, Reason: "unmatched ')'"}, "" - } - rem = s[i+1:] - s = s[1:i] - for err == nil && s != "" { - err, s = validSingle(s, depth+1) - } - if err != nil { - rem = "" - } - return - } - return SignatureError{Sig: s, Reason: "invalid type character"}, "" -} - -func findMatching(s string, left, right rune) int { - n := 0 - for i, v := range s { - if v == left { - n++ - } else if v == right { - n-- - } - if n == 0 { - return i - } - } - return -1 -} - -// 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) - if err != nil { - panic(err) - } - - if t, ok := sigToType[s[0]]; ok { - return t - } - switch s[0] { - case 'a': - if s[1] == '{' { - i := strings.LastIndex(s, "}") - t = reflect.MapOf(sigToType[s[2]], typeFor(s[3:i])) - } else { - t = reflect.SliceOf(typeFor(s[1:])) - } - case '(': - t = interfacesType - } - return -} diff --git a/vendor/github.com/godbus/dbus/transport_darwin.go b/vendor/github.com/godbus/dbus/transport_darwin.go deleted file mode 100644 index 1bba0d6bf..000000000 --- a/vendor/github.com/godbus/dbus/transport_darwin.go +++ /dev/null @@ -1,6 +0,0 @@ -package dbus - -func (t *unixTransport) SendNullByte() error { - _, err := t.Write([]byte{0}) - return err -} diff --git a/vendor/github.com/godbus/dbus/transport_generic.go b/vendor/github.com/godbus/dbus/transport_generic.go deleted file mode 100644 index 46f8f49d6..000000000 --- a/vendor/github.com/godbus/dbus/transport_generic.go +++ /dev/null @@ -1,35 +0,0 @@ -package dbus - -import ( - "encoding/binary" - "errors" - "io" -) - -type genericTransport struct { - io.ReadWriteCloser -} - -func (t genericTransport) SendNullByte() error { - _, err := t.Write([]byte{0}) - return err -} - -func (t genericTransport) SupportsUnixFDs() bool { - return false -} - -func (t genericTransport) EnableUnixFDs() {} - -func (t genericTransport) ReadMessage() (*Message, error) { - return DecodeMessage(t) -} - -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") - } - } - return msg.EncodeTo(t, binary.LittleEndian) -} diff --git a/vendor/github.com/godbus/dbus/transport_unix.go b/vendor/github.com/godbus/dbus/transport_unix.go deleted file mode 100644 index 3fafeabb1..000000000 --- a/vendor/github.com/godbus/dbus/transport_unix.go +++ /dev/null @@ -1,196 +0,0 @@ -//+build !windows - -package dbus - -import ( - "bytes" - "encoding/binary" - "errors" - "io" - "net" - "syscall" -) - -type oobReader struct { - conn *net.UnixConn - oob []byte - buf [4096]byte -} - -func (o *oobReader) Read(b []byte) (n int, err error) { - n, oobn, flags, _, err := o.conn.ReadMsgUnix(b, o.buf[:]) - if err != nil { - return n, err - } - if flags&syscall.MSG_CTRUNC != 0 { - return n, errors.New("dbus: control data truncated (too many fds received)") - } - o.oob = append(o.oob, o.buf[:oobn]...) - return n, nil -} - -type unixTransport struct { - *net.UnixConn - hasUnixFDs bool -} - -func newUnixTransport(keys string) (transport, error) { - var err error - - t := new(unixTransport) - abstract := getKey(keys, "abstract") - path := getKey(keys, "path") - switch { - case abstract == "" && path == "": - return nil, errors.New("dbus: invalid address (neither path nor abstract set)") - case abstract != "" && path == "": - t.UnixConn, err = net.DialUnix("unix", nil, &net.UnixAddr{Name: "@" + abstract, Net: "unix"}) - if err != nil { - return nil, err - } - return t, nil - case abstract == "" && path != "": - t.UnixConn, err = net.DialUnix("unix", nil, &net.UnixAddr{Name: path, Net: "unix"}) - if err != nil { - return nil, err - } - return t, nil - default: - return nil, errors.New("dbus: invalid address (both path and abstract set)") - } -} - -func init() { - transports["unix"] = newUnixTransport -} - -func (t *unixTransport) EnableUnixFDs() { - t.hasUnixFDs = true -} - -func (t *unixTransport) ReadMessage() (*Message, error) { - var ( - blen, hlen uint32 - csheader [16]byte - headers []header - order binary.ByteOrder - unixfds uint32 - ) - // To be sure that all bytes of out-of-band data are read, we use a special - // reader that uses ReadUnix on the underlying connection instead of Read - // and gathers the out-of-band data in a buffer. - rd := &oobReader{conn: t.UnixConn} - // read the first 16 bytes (the part of the header that has a constant size), - // from which we can figure out the length of the rest of the message - if _, err := io.ReadFull(rd, csheader[:]); err != nil { - return nil, err - } - switch csheader[0] { - case 'l': - order = binary.LittleEndian - case 'B': - order = binary.BigEndian - default: - return nil, InvalidMessageError("invalid byte order") - } - // csheader[4:8] -> length of message body, csheader[12:16] -> length of - // header fields (without alignment) - binary.Read(bytes.NewBuffer(csheader[4:8]), order, &blen) - binary.Read(bytes.NewBuffer(csheader[12:]), order, &hlen) - if hlen%8 != 0 { - hlen += 8 - (hlen % 8) - } - - // decode headers and look for unix fds - headerdata := make([]byte, hlen+4) - copy(headerdata, csheader[12:]) - if _, err := io.ReadFull(t, headerdata[4:]); err != nil { - return nil, err - } - dec := newDecoder(bytes.NewBuffer(headerdata), order) - dec.pos = 12 - vs, err := dec.Decode(Signature{"a(yv)"}) - if err != nil { - return nil, err - } - Store(vs, &headers) - for _, v := range headers { - if v.Field == byte(FieldUnixFDs) { - unixfds, _ = v.Variant.value.(uint32) - } - } - all := make([]byte, 16+hlen+blen) - copy(all, csheader[:]) - copy(all[16:], headerdata[4:]) - if _, err := io.ReadFull(rd, all[16+hlen:]); err != nil { - return nil, err - } - if unixfds != 0 { - if !t.hasUnixFDs { - return nil, errors.New("dbus: got unix fds on unsupported transport") - } - // read the fds from the OOB data - scms, err := syscall.ParseSocketControlMessage(rd.oob) - if err != nil { - return nil, err - } - if len(scms) != 1 { - return nil, errors.New("dbus: received more than one socket control message") - } - fds, err := syscall.ParseUnixRights(&scms[0]) - if err != nil { - return nil, err - } - msg, err := DecodeMessage(bytes.NewBuffer(all)) - if err != nil { - return nil, err - } - // 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 { - if j, ok := v.(UnixFDIndex); ok { - if uint32(j) >= unixfds { - return nil, InvalidMessageError("invalid index for unix fd") - } - msg.Body[i] = UnixFD(fds[j]) - } - } - return msg, nil - } - return DecodeMessage(bytes.NewBuffer(all)) -} - -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)) - } - } - if len(fds) != 0 { - if !t.hasUnixFDs { - return errors.New("dbus: unix fd passing not enabled") - } - msg.Headers[FieldUnixFDs] = MakeVariant(uint32(len(fds))) - oob := syscall.UnixRights(fds...) - buf := new(bytes.Buffer) - msg.EncodeTo(buf, binary.LittleEndian) - n, oobn, err := t.UnixConn.WriteMsgUnix(buf.Bytes(), oob, nil) - if err != nil { - return err - } - if n != buf.Len() || oobn != len(oob) { - return io.ErrShortWrite - } - } else { - if err := msg.EncodeTo(t, binary.LittleEndian); err != nil { - return nil - } - } - return nil -} - -func (t *unixTransport) SupportsUnixFDs() bool { - return true -} diff --git a/vendor/github.com/godbus/dbus/transport_unixcred_dragonfly.go b/vendor/github.com/godbus/dbus/transport_unixcred_dragonfly.go deleted file mode 100644 index a8cd39395..000000000 --- a/vendor/github.com/godbus/dbus/transport_unixcred_dragonfly.go +++ /dev/null @@ -1,95 +0,0 @@ -// The UnixCredentials system call is currently only implemented on Linux -// http://golang.org/src/pkg/syscall/sockcmsg_linux.go -// https://golang.org/s/go1.4-syscall -// http://code.google.com/p/go/source/browse/unix/sockcmsg_linux.go?repo=sys - -// Local implementation of the UnixCredentials system call for DragonFly BSD - -package dbus - -/* -#include <sys/ucred.h> -*/ -import "C" - -import ( - "io" - "os" - "syscall" - "unsafe" -) - -// http://golang.org/src/pkg/syscall/ztypes_linux_amd64.go -// http://golang.org/src/pkg/syscall/ztypes_dragonfly_amd64.go -type Ucred struct { - Pid int32 - Uid uint32 - Gid uint32 -} - -// http://golang.org/src/pkg/syscall/types_linux.go -// http://golang.org/src/pkg/syscall/types_dragonfly.go -// https://github.com/DragonFlyBSD/DragonFlyBSD/blob/master/sys/sys/ucred.h -const ( - SizeofUcred = C.sizeof_struct_ucred -) - -// http://golang.org/src/pkg/syscall/sockcmsg_unix.go -func cmsgAlignOf(salen int) int { - // From http://golang.org/src/pkg/syscall/sockcmsg_unix.go - //salign := sizeofPtr - // NOTE: It seems like 64-bit Darwin and DragonFly BSD kernels - // still require 32-bit aligned access to network subsystem. - //if darwin64Bit || dragonfly64Bit { - // salign = 4 - //} - salign := 4 - return (salen + salign - 1) & ^(salign - 1) -} - -// http://golang.org/src/pkg/syscall/sockcmsg_unix.go -func cmsgData(h *syscall.Cmsghdr) unsafe.Pointer { - return unsafe.Pointer(uintptr(unsafe.Pointer(h)) + uintptr(cmsgAlignOf(syscall.SizeofCmsghdr))) -} - -// http://golang.org/src/pkg/syscall/sockcmsg_linux.go -// UnixCredentials encodes credentials into a socket control message -// for sending to another process. This can be used for -// authentication. -func UnixCredentials(ucred *Ucred) []byte { - b := make([]byte, syscall.CmsgSpace(SizeofUcred)) - h := (*syscall.Cmsghdr)(unsafe.Pointer(&b[0])) - h.Level = syscall.SOL_SOCKET - h.Type = syscall.SCM_CREDS - h.SetLen(syscall.CmsgLen(SizeofUcred)) - *((*Ucred)(cmsgData(h))) = *ucred - return b -} - -// http://golang.org/src/pkg/syscall/sockcmsg_linux.go -// ParseUnixCredentials decodes a socket control message that contains -// credentials in a Ucred structure. To receive such a message, the -// SO_PASSCRED option must be enabled on the socket. -func ParseUnixCredentials(m *syscall.SocketControlMessage) (*Ucred, error) { - if m.Header.Level != syscall.SOL_SOCKET { - return nil, syscall.EINVAL - } - if m.Header.Type != syscall.SCM_CREDS { - return nil, syscall.EINVAL - } - ucred := *(*Ucred)(unsafe.Pointer(&m.Data[0])) - return &ucred, nil -} - -func (t *unixTransport) SendNullByte() error { - ucred := &Ucred{Pid: int32(os.Getpid()), Uid: uint32(os.Getuid()), Gid: uint32(os.Getgid())} - b := UnixCredentials(ucred) - _, oobn, err := t.UnixConn.WriteMsgUnix([]byte{0}, b, nil) - if err != nil { - return err - } - if oobn != len(b) { - return io.ErrShortWrite - } - return nil -} diff --git a/vendor/github.com/godbus/dbus/transport_unixcred_linux.go b/vendor/github.com/godbus/dbus/transport_unixcred_linux.go deleted file mode 100644 index d9dfdf698..000000000 --- a/vendor/github.com/godbus/dbus/transport_unixcred_linux.go +++ /dev/null @@ -1,25 +0,0 @@ -// The UnixCredentials system call is currently only implemented on Linux -// http://golang.org/src/pkg/syscall/sockcmsg_linux.go -// https://golang.org/s/go1.4-syscall -// http://code.google.com/p/go/source/browse/unix/sockcmsg_linux.go?repo=sys - -package dbus - -import ( - "io" - "os" - "syscall" -) - -func (t *unixTransport) SendNullByte() error { - ucred := &syscall.Ucred{Pid: int32(os.Getpid()), Uid: uint32(os.Getuid()), Gid: uint32(os.Getgid())} - b := syscall.UnixCredentials(ucred) - _, oobn, err := t.UnixConn.WriteMsgUnix([]byte{0}, b, nil) - if err != nil { - return err - } - if oobn != len(b) { - return io.ErrShortWrite - } - return nil -} diff --git a/vendor/github.com/godbus/dbus/variant.go b/vendor/github.com/godbus/dbus/variant.go deleted file mode 100644 index b7b13ae90..000000000 --- a/vendor/github.com/godbus/dbus/variant.go +++ /dev/null @@ -1,139 +0,0 @@ -package dbus - -import ( - "bytes" - "fmt" - "reflect" - "sort" - "strconv" -) - -// Variant represents the D-Bus variant type. -type Variant struct { - sig Signature - value interface{} -} - -// MakeVariant converts the given value to a Variant. It panics if v cannot be -// represented as a D-Bus type. -func MakeVariant(v interface{}) Variant { - return Variant{SignatureOf(v), v} -} - -// ParseVariant parses the given string as a variant as described at -// https://developer.gnome.org/glib/unstable/gvariant-text.html. If sig is not -// empty, it is taken to be the expected signature for the variant. -func ParseVariant(s string, sig Signature) (Variant, error) { - tokens := varLex(s) - p := &varParser{tokens: tokens} - n, err := varMakeNode(p) - if err != nil { - return Variant{}, err - } - if sig.str == "" { - sig, err = varInfer(n) - if err != nil { - return Variant{}, err - } - } - v, err := n.Value(sig) - if err != nil { - return Variant{}, err - } - return MakeVariant(v), nil -} - -// format returns a formatted version of v and whether this string can be parsed -// unambigously. -func (v Variant) format() (string, bool) { - switch v.sig.str[0] { - case 'b', 'i': - return fmt.Sprint(v.value), true - case 'n', 'q', 'u', 'x', 't', 'd', 'h': - return fmt.Sprint(v.value), false - case 's': - return strconv.Quote(v.value.(string)), true - case 'o': - return strconv.Quote(string(v.value.(ObjectPath))), false - case 'g': - return strconv.Quote(v.value.(Signature).str), false - case 'v': - s, unamb := v.value.(Variant).format() - if !unamb { - return "<@" + v.value.(Variant).sig.str + " " + s + ">", true - } - return "<" + s + ">", true - case 'y': - return fmt.Sprintf("%#x", v.value.(byte)), false - } - rv := reflect.ValueOf(v.value) - switch rv.Kind() { - case reflect.Slice: - if rv.Len() == 0 { - return "[]", false - } - unamb := true - buf := bytes.NewBuffer([]byte("[")) - for i := 0; i < rv.Len(); i++ { - // TODO: slooow - s, b := MakeVariant(rv.Index(i).Interface()).format() - unamb = unamb && b - buf.WriteString(s) - if i != rv.Len()-1 { - buf.WriteString(", ") - } - } - buf.WriteByte(']') - return buf.String(), unamb - case reflect.Map: - if rv.Len() == 0 { - return "{}", false - } - unamb := true - var buf bytes.Buffer - kvs := make([]string, rv.Len()) - for i, k := range rv.MapKeys() { - s, b := MakeVariant(k.Interface()).format() - unamb = unamb && b - buf.Reset() - buf.WriteString(s) - buf.WriteString(": ") - s, b = MakeVariant(rv.MapIndex(k).Interface()).format() - unamb = unamb && b - buf.WriteString(s) - kvs[i] = buf.String() - } - buf.Reset() - buf.WriteByte('{') - sort.Strings(kvs) - for i, kv := range kvs { - if i > 0 { - buf.WriteString(", ") - } - buf.WriteString(kv) - } - buf.WriteByte('}') - return buf.String(), unamb - } - return `"INVALID"`, true -} - -// Signature returns the D-Bus signature of the underlying value of v. -func (v Variant) Signature() Signature { - return v.sig -} - -// String returns the string representation of the underlying value of v as -// described at https://developer.gnome.org/glib/unstable/gvariant-text.html. -func (v Variant) String() string { - s, unamb := v.format() - if !unamb { - return "@" + v.sig.str + " " + s - } - return s -} - -// Value returns the underlying value of v. -func (v Variant) Value() interface{} { - return v.value -} diff --git a/vendor/github.com/godbus/dbus/variant_lexer.go b/vendor/github.com/godbus/dbus/variant_lexer.go deleted file mode 100644 index 332007d6f..000000000 --- a/vendor/github.com/godbus/dbus/variant_lexer.go +++ /dev/null @@ -1,284 +0,0 @@ -package dbus - -import ( - "fmt" - "strings" - "unicode" - "unicode/utf8" -) - -// Heavily inspired by the lexer from text/template. - -type varToken struct { - typ varTokenType - val string -} - -type varTokenType byte - -const ( - tokEOF varTokenType = iota - tokError - tokNumber - tokString - tokBool - tokArrayStart - tokArrayEnd - tokDictStart - tokDictEnd - tokVariantStart - tokVariantEnd - tokComma - tokColon - tokType - tokByteString -) - -type varLexer struct { - input string - start int - pos int - width int - tokens []varToken -} - -type lexState func(*varLexer) lexState - -func varLex(s string) []varToken { - l := &varLexer{input: s} - l.run() - return l.tokens -} - -func (l *varLexer) accept(valid string) bool { - if strings.IndexRune(valid, l.next()) >= 0 { - return true - } - l.backup() - return false -} - -func (l *varLexer) backup() { - l.pos -= l.width -} - -func (l *varLexer) emit(t varTokenType) { - l.tokens = append(l.tokens, varToken{t, l.input[l.start:l.pos]}) - l.start = l.pos -} - -func (l *varLexer) errorf(format string, v ...interface{}) lexState { - l.tokens = append(l.tokens, varToken{ - tokError, - fmt.Sprintf(format, v...), - }) - return nil -} - -func (l *varLexer) ignore() { - l.start = l.pos -} - -func (l *varLexer) next() rune { - var r rune - - if l.pos >= len(l.input) { - l.width = 0 - return -1 - } - r, l.width = utf8.DecodeRuneInString(l.input[l.pos:]) - l.pos += l.width - return r -} - -func (l *varLexer) run() { - for state := varLexNormal; state != nil; { - state = state(l) - } -} - -func (l *varLexer) peek() rune { - r := l.next() - l.backup() - return r -} - -func varLexNormal(l *varLexer) lexState { - for { - r := l.next() - switch { - case r == -1: - l.emit(tokEOF) - return nil - case r == '[': - l.emit(tokArrayStart) - case r == ']': - l.emit(tokArrayEnd) - case r == '{': - l.emit(tokDictStart) - case r == '}': - l.emit(tokDictEnd) - case r == '<': - l.emit(tokVariantStart) - case r == '>': - l.emit(tokVariantEnd) - case r == ':': - l.emit(tokColon) - case r == ',': - l.emit(tokComma) - case r == '\'' || r == '"': - l.backup() - return varLexString - case r == '@': - l.backup() - return varLexType - case unicode.IsSpace(r): - l.ignore() - case unicode.IsNumber(r) || r == '+' || r == '-': - l.backup() - return varLexNumber - case r == 'b': - pos := l.start - if n := l.peek(); n == '"' || n == '\'' { - return varLexByteString - } - // not a byte string; try to parse it as a type or bool below - l.pos = pos + 1 - l.width = 1 - fallthrough - default: - // either a bool or a type. Try bools first. - l.backup() - if l.pos+4 <= len(l.input) { - if l.input[l.pos:l.pos+4] == "true" { - l.pos += 4 - l.emit(tokBool) - continue - } - } - if l.pos+5 <= len(l.input) { - if l.input[l.pos:l.pos+5] == "false" { - l.pos += 5 - l.emit(tokBool) - continue - } - } - // must be a type. - return varLexType - } - } -} - -var varTypeMap = map[string]string{ - "boolean": "b", - "byte": "y", - "int16": "n", - "uint16": "q", - "int32": "i", - "uint32": "u", - "int64": "x", - "uint64": "t", - "double": "f", - "string": "s", - "objectpath": "o", - "signature": "g", -} - -func varLexByteString(l *varLexer) lexState { - q := l.next() -Loop: - for { - switch l.next() { - case '\\': - if r := l.next(); r != -1 { - break - } - fallthrough - case -1: - return l.errorf("unterminated bytestring") - case q: - break Loop - } - } - l.emit(tokByteString) - return varLexNormal -} - -func varLexNumber(l *varLexer) lexState { - l.accept("+-") - digits := "0123456789" - if l.accept("0") { - if l.accept("x") { - digits = "0123456789abcdefABCDEF" - } else { - digits = "01234567" - } - } - for strings.IndexRune(digits, l.next()) >= 0 { - } - l.backup() - if l.accept(".") { - for strings.IndexRune(digits, l.next()) >= 0 { - } - l.backup() - } - if l.accept("eE") { - l.accept("+-") - for strings.IndexRune("0123456789", l.next()) >= 0 { - } - l.backup() - } - if r := l.peek(); unicode.IsLetter(r) { - l.next() - return l.errorf("bad number syntax: %q", l.input[l.start:l.pos]) - } - l.emit(tokNumber) - return varLexNormal -} - -func varLexString(l *varLexer) lexState { - q := l.next() -Loop: - for { - switch l.next() { - case '\\': - if r := l.next(); r != -1 { - break - } - fallthrough - case -1: - return l.errorf("unterminated string") - case q: - break Loop - } - } - l.emit(tokString) - return varLexNormal -} - -func varLexType(l *varLexer) lexState { - at := l.accept("@") - for { - r := l.next() - if r == -1 { - break - } - if unicode.IsSpace(r) { - l.backup() - break - } - } - if at { - if _, err := ParseSignature(l.input[l.start+1 : l.pos]); err != nil { - return l.errorf("%s", err) - } - } else { - if _, ok := varTypeMap[l.input[l.start:l.pos]]; ok { - l.emit(tokType) - return varLexNormal - } - return l.errorf("unrecognized type %q", l.input[l.start:l.pos]) - } - l.emit(tokType) - return varLexNormal -} diff --git a/vendor/github.com/godbus/dbus/variant_parser.go b/vendor/github.com/godbus/dbus/variant_parser.go deleted file mode 100644 index d20f5da6d..000000000 --- a/vendor/github.com/godbus/dbus/variant_parser.go +++ /dev/null @@ -1,817 +0,0 @@ -package dbus - -import ( - "bytes" - "errors" - "fmt" - "io" - "reflect" - "strconv" - "strings" - "unicode/utf8" -) - -type varParser struct { - tokens []varToken - i int -} - -func (p *varParser) backup() { - p.i-- -} - -func (p *varParser) next() varToken { - if p.i < len(p.tokens) { - t := p.tokens[p.i] - p.i++ - return t - } - return varToken{typ: tokEOF} -} - -type varNode interface { - Infer() (Signature, error) - String() string - Sigs() sigSet - Value(Signature) (interface{}, error) -} - -func varMakeNode(p *varParser) (varNode, error) { - var sig Signature - - for { - t := p.next() - switch t.typ { - case tokEOF: - return nil, io.ErrUnexpectedEOF - case tokError: - return nil, errors.New(t.val) - case tokNumber: - return varMakeNumNode(t, sig) - case tokString: - return varMakeStringNode(t, sig) - case tokBool: - if sig.str != "" && sig.str != "b" { - return nil, varTypeError{t.val, sig} - } - b, err := strconv.ParseBool(t.val) - if err != nil { - return nil, err - } - return boolNode(b), nil - case tokArrayStart: - return varMakeArrayNode(p, sig) - case tokVariantStart: - return varMakeVariantNode(p, sig) - case tokDictStart: - return varMakeDictNode(p, sig) - case tokType: - if sig.str != "" { - return nil, errors.New("unexpected type annotation") - } - if t.val[0] == '@' { - sig.str = t.val[1:] - } else { - sig.str = varTypeMap[t.val] - } - case tokByteString: - if sig.str != "" && sig.str != "ay" { - return nil, varTypeError{t.val, sig} - } - b, err := varParseByteString(t.val) - if err != nil { - return nil, err - } - return byteStringNode(b), nil - default: - return nil, fmt.Errorf("unexpected %q", t.val) - } - } -} - -type varTypeError struct { - val string - sig Signature -} - -func (e varTypeError) Error() string { - return fmt.Sprintf("dbus: can't parse %q as type %q", e.val, e.sig.str) -} - -type sigSet map[Signature]bool - -func (s sigSet) Empty() bool { - return len(s) == 0 -} - -func (s sigSet) Intersect(s2 sigSet) sigSet { - r := make(sigSet) - for k := range s { - if s2[k] { - r[k] = true - } - } - return r -} - -func (s sigSet) Single() (Signature, bool) { - if len(s) == 1 { - for k := range s { - return k, true - } - } - return Signature{}, false -} - -func (s sigSet) ToArray() sigSet { - r := make(sigSet, len(s)) - for k := range s { - r[Signature{"a" + k.str}] = true - } - return r -} - -type numNode struct { - sig Signature - str string - val interface{} -} - -var numSigSet = sigSet{ - Signature{"y"}: true, - Signature{"n"}: true, - Signature{"q"}: true, - Signature{"i"}: true, - Signature{"u"}: true, - Signature{"x"}: true, - Signature{"t"}: true, - Signature{"d"}: true, -} - -func (n numNode) Infer() (Signature, error) { - if strings.ContainsAny(n.str, ".e") { - return Signature{"d"}, nil - } - return Signature{"i"}, nil -} - -func (n numNode) String() string { - return n.str -} - -func (n numNode) Sigs() sigSet { - if n.sig.str != "" { - return sigSet{n.sig: true} - } - if strings.ContainsAny(n.str, ".e") { - return sigSet{Signature{"d"}: true} - } - return numSigSet -} - -func (n numNode) Value(sig Signature) (interface{}, error) { - if n.sig.str != "" && n.sig != sig { - return nil, varTypeError{n.str, sig} - } - if n.val != nil { - return n.val, nil - } - return varNumAs(n.str, sig) -} - -func varMakeNumNode(tok varToken, sig Signature) (varNode, error) { - if sig.str == "" { - return numNode{str: tok.val}, nil - } - num, err := varNumAs(tok.val, sig) - if err != nil { - return nil, err - } - return numNode{sig: sig, val: num}, nil -} - -func varNumAs(s string, sig Signature) (interface{}, error) { - isUnsigned := false - size := 32 - switch sig.str { - case "n": - size = 16 - case "i": - case "x": - size = 64 - case "y": - size = 8 - isUnsigned = true - case "q": - size = 16 - isUnsigned = true - case "u": - isUnsigned = true - case "t": - size = 64 - isUnsigned = true - case "d": - d, err := strconv.ParseFloat(s, 64) - if err != nil { - return nil, err - } - return d, nil - default: - return nil, varTypeError{s, sig} - } - base := 10 - if strings.HasPrefix(s, "0x") { - base = 16 - s = s[2:] - } - if strings.HasPrefix(s, "0") && len(s) != 1 { - base = 8 - s = s[1:] - } - if isUnsigned { - i, err := strconv.ParseUint(s, base, size) - if err != nil { - return nil, err - } - var v interface{} = i - switch sig.str { - case "y": - v = byte(i) - case "q": - v = uint16(i) - case "u": - v = uint32(i) - } - return v, nil - } - i, err := strconv.ParseInt(s, base, size) - if err != nil { - return nil, err - } - var v interface{} = i - switch sig.str { - case "n": - v = int16(i) - case "i": - v = int32(i) - } - return v, nil -} - -type stringNode struct { - sig Signature - str string // parsed - val interface{} // has correct type -} - -var stringSigSet = sigSet{ - Signature{"s"}: true, - Signature{"g"}: true, - Signature{"o"}: true, -} - -func (n stringNode) Infer() (Signature, error) { - return Signature{"s"}, nil -} - -func (n stringNode) String() string { - return n.str -} - -func (n stringNode) Sigs() sigSet { - if n.sig.str != "" { - return sigSet{n.sig: true} - } - return stringSigSet -} - -func (n stringNode) Value(sig Signature) (interface{}, error) { - if n.sig.str != "" && n.sig != sig { - return nil, varTypeError{n.str, sig} - } - if n.val != nil { - return n.val, nil - } - switch { - case sig.str == "g": - return Signature{n.str}, nil - case sig.str == "o": - return ObjectPath(n.str), nil - case sig.str == "s": - return n.str, nil - default: - return nil, varTypeError{n.str, sig} - } -} - -func varMakeStringNode(tok varToken, sig Signature) (varNode, error) { - if sig.str != "" && sig.str != "s" && sig.str != "g" && sig.str != "o" { - return nil, fmt.Errorf("invalid type %q for string", sig.str) - } - s, err := varParseString(tok.val) - if err != nil { - return nil, err - } - n := stringNode{str: s} - if sig.str == "" { - return stringNode{str: s}, nil - } - n.sig = sig - switch sig.str { - case "o": - n.val = ObjectPath(s) - case "g": - n.val = Signature{s} - case "s": - n.val = s - } - return n, nil -} - -func varParseString(s string) (string, error) { - // quotes are guaranteed to be there - s = s[1 : len(s)-1] - buf := new(bytes.Buffer) - for len(s) != 0 { - r, size := utf8.DecodeRuneInString(s) - if r == utf8.RuneError && size == 1 { - return "", errors.New("invalid UTF-8") - } - s = s[size:] - if r != '\\' { - buf.WriteRune(r) - continue - } - r, size = utf8.DecodeRuneInString(s) - if r == utf8.RuneError && size == 1 { - return "", errors.New("invalid UTF-8") - } - s = s[size:] - switch r { - case 'a': - buf.WriteRune(0x7) - case 'b': - buf.WriteRune(0x8) - case 'f': - buf.WriteRune(0xc) - case 'n': - buf.WriteRune('\n') - case 'r': - buf.WriteRune('\r') - case 't': - buf.WriteRune('\t') - case '\n': - case 'u': - if len(s) < 4 { - return "", errors.New("short unicode escape") - } - r, err := strconv.ParseUint(s[:4], 16, 32) - if err != nil { - return "", err - } - buf.WriteRune(rune(r)) - s = s[4:] - case 'U': - if len(s) < 8 { - return "", errors.New("short unicode escape") - } - r, err := strconv.ParseUint(s[:8], 16, 32) - if err != nil { - return "", err - } - buf.WriteRune(rune(r)) - s = s[8:] - default: - buf.WriteRune(r) - } - } - return buf.String(), nil -} - -var boolSigSet = sigSet{Signature{"b"}: true} - -type boolNode bool - -func (boolNode) Infer() (Signature, error) { - return Signature{"b"}, nil -} - -func (b boolNode) String() string { - if b { - return "true" - } - return "false" -} - -func (boolNode) Sigs() sigSet { - return boolSigSet -} - -func (b boolNode) Value(sig Signature) (interface{}, error) { - if sig.str != "b" { - return nil, varTypeError{b.String(), sig} - } - return bool(b), nil -} - -type arrayNode struct { - set sigSet - children []varNode - val interface{} -} - -func (n arrayNode) Infer() (Signature, error) { - for _, v := range n.children { - csig, err := varInfer(v) - if err != nil { - continue - } - return Signature{"a" + csig.str}, nil - } - return Signature{}, fmt.Errorf("can't infer type for %q", n.String()) -} - -func (n arrayNode) String() string { - s := "[" - for i, v := range n.children { - s += v.String() - if i != len(n.children)-1 { - s += ", " - } - } - return s + "]" -} - -func (n arrayNode) Sigs() sigSet { - return n.set -} - -func (n arrayNode) Value(sig Signature) (interface{}, error) { - if n.set.Empty() { - // no type information whatsoever, so this must be an empty slice - return reflect.MakeSlice(typeFor(sig.str), 0, 0).Interface(), nil - } - if !n.set[sig] { - return nil, varTypeError{n.String(), sig} - } - s := reflect.MakeSlice(typeFor(sig.str), len(n.children), len(n.children)) - for i, v := range n.children { - rv, err := v.Value(Signature{sig.str[1:]}) - if err != nil { - return nil, err - } - s.Index(i).Set(reflect.ValueOf(rv)) - } - return s.Interface(), nil -} - -func varMakeArrayNode(p *varParser, sig Signature) (varNode, error) { - var n arrayNode - if sig.str != "" { - n.set = sigSet{sig: true} - } - if t := p.next(); t.typ == tokArrayEnd { - return n, nil - } else { - p.backup() - } -Loop: - for { - t := p.next() - switch t.typ { - case tokEOF: - return nil, io.ErrUnexpectedEOF - case tokError: - return nil, errors.New(t.val) - } - p.backup() - cn, err := varMakeNode(p) - if err != nil { - return nil, err - } - if cset := cn.Sigs(); !cset.Empty() { - if n.set.Empty() { - n.set = cset.ToArray() - } else { - nset := cset.ToArray().Intersect(n.set) - if nset.Empty() { - return nil, fmt.Errorf("can't parse %q with given type information", cn.String()) - } - n.set = nset - } - } - n.children = append(n.children, cn) - switch t := p.next(); t.typ { - case tokEOF: - return nil, io.ErrUnexpectedEOF - case tokError: - return nil, errors.New(t.val) - case tokArrayEnd: - break Loop - case tokComma: - continue - default: - return nil, fmt.Errorf("unexpected %q", t.val) - } - } - return n, nil -} - -type variantNode struct { - n varNode -} - -var variantSet = sigSet{ - Signature{"v"}: true, -} - -func (variantNode) Infer() (Signature, error) { - return Signature{"v"}, nil -} - -func (n variantNode) String() string { - return "<" + n.n.String() + ">" -} - -func (variantNode) Sigs() sigSet { - return variantSet -} - -func (n variantNode) Value(sig Signature) (interface{}, error) { - if sig.str != "v" { - return nil, varTypeError{n.String(), sig} - } - sig, err := varInfer(n.n) - if err != nil { - return nil, err - } - v, err := n.n.Value(sig) - if err != nil { - return nil, err - } - return MakeVariant(v), nil -} - -func varMakeVariantNode(p *varParser, sig Signature) (varNode, error) { - n, err := varMakeNode(p) - if err != nil { - return nil, err - } - if t := p.next(); t.typ != tokVariantEnd { - return nil, fmt.Errorf("unexpected %q", t.val) - } - vn := variantNode{n} - if sig.str != "" && sig.str != "v" { - return nil, varTypeError{vn.String(), sig} - } - return variantNode{n}, nil -} - -type dictEntry struct { - key, val varNode -} - -type dictNode struct { - kset, vset sigSet - children []dictEntry - val interface{} -} - -func (n dictNode) Infer() (Signature, error) { - for _, v := range n.children { - ksig, err := varInfer(v.key) - if err != nil { - continue - } - vsig, err := varInfer(v.val) - if err != nil { - continue - } - return Signature{"a{" + ksig.str + vsig.str + "}"}, nil - } - return Signature{}, fmt.Errorf("can't infer type for %q", n.String()) -} - -func (n dictNode) String() string { - s := "{" - for i, v := range n.children { - s += v.key.String() + ": " + v.val.String() - if i != len(n.children)-1 { - s += ", " - } - } - return s + "}" -} - -func (n dictNode) Sigs() sigSet { - r := sigSet{} - for k := range n.kset { - for v := range n.vset { - sig := "a{" + k.str + v.str + "}" - r[Signature{sig}] = true - } - } - return r -} - -func (n dictNode) Value(sig Signature) (interface{}, error) { - set := n.Sigs() - if set.Empty() { - // no type information -> empty dict - return reflect.MakeMap(typeFor(sig.str)).Interface(), nil - } - if !set[sig] { - return nil, varTypeError{n.String(), sig} - } - m := reflect.MakeMap(typeFor(sig.str)) - ksig := Signature{sig.str[2:3]} - vsig := Signature{sig.str[3 : len(sig.str)-1]} - for _, v := range n.children { - kv, err := v.key.Value(ksig) - if err != nil { - return nil, err - } - vv, err := v.val.Value(vsig) - if err != nil { - return nil, err - } - m.SetMapIndex(reflect.ValueOf(kv), reflect.ValueOf(vv)) - } - return m.Interface(), nil -} - -func varMakeDictNode(p *varParser, sig Signature) (varNode, error) { - var n dictNode - - if sig.str != "" { - if len(sig.str) < 5 { - return nil, fmt.Errorf("invalid signature %q for dict type", sig) - } - ksig := Signature{string(sig.str[2])} - vsig := Signature{sig.str[3 : len(sig.str)-1]} - n.kset = sigSet{ksig: true} - n.vset = sigSet{vsig: true} - } - if t := p.next(); t.typ == tokDictEnd { - return n, nil - } else { - p.backup() - } -Loop: - for { - t := p.next() - switch t.typ { - case tokEOF: - return nil, io.ErrUnexpectedEOF - case tokError: - return nil, errors.New(t.val) - } - p.backup() - kn, err := varMakeNode(p) - if err != nil { - return nil, err - } - if kset := kn.Sigs(); !kset.Empty() { - if n.kset.Empty() { - n.kset = kset - } else { - n.kset = kset.Intersect(n.kset) - if n.kset.Empty() { - return nil, fmt.Errorf("can't parse %q with given type information", kn.String()) - } - } - } - t = p.next() - switch t.typ { - case tokEOF: - return nil, io.ErrUnexpectedEOF - case tokError: - return nil, errors.New(t.val) - case tokColon: - default: - return nil, fmt.Errorf("unexpected %q", t.val) - } - t = p.next() - switch t.typ { - case tokEOF: - return nil, io.ErrUnexpectedEOF - case tokError: - return nil, errors.New(t.val) - } - p.backup() - vn, err := varMakeNode(p) - if err != nil { - return nil, err - } - if vset := vn.Sigs(); !vset.Empty() { - if n.vset.Empty() { - n.vset = vset - } else { - n.vset = n.vset.Intersect(vset) - if n.vset.Empty() { - return nil, fmt.Errorf("can't parse %q with given type information", vn.String()) - } - } - } - n.children = append(n.children, dictEntry{kn, vn}) - t = p.next() - switch t.typ { - case tokEOF: - return nil, io.ErrUnexpectedEOF - case tokError: - return nil, errors.New(t.val) - case tokDictEnd: - break Loop - case tokComma: - continue - default: - return nil, fmt.Errorf("unexpected %q", t.val) - } - } - return n, nil -} - -type byteStringNode []byte - -var byteStringSet = sigSet{ - Signature{"ay"}: true, -} - -func (byteStringNode) Infer() (Signature, error) { - return Signature{"ay"}, nil -} - -func (b byteStringNode) String() string { - return string(b) -} - -func (b byteStringNode) Sigs() sigSet { - return byteStringSet -} - -func (b byteStringNode) Value(sig Signature) (interface{}, error) { - if sig.str != "ay" { - return nil, varTypeError{b.String(), sig} - } - return []byte(b), nil -} - -func varParseByteString(s string) ([]byte, error) { - // quotes and b at start are guaranteed to be there - b := make([]byte, 0, 1) - s = s[2 : len(s)-1] - for len(s) != 0 { - c := s[0] - s = s[1:] - if c != '\\' { - b = append(b, c) - continue - } - c = s[0] - s = s[1:] - switch c { - case 'a': - b = append(b, 0x7) - case 'b': - b = append(b, 0x8) - case 'f': - b = append(b, 0xc) - case 'n': - b = append(b, '\n') - case 'r': - b = append(b, '\r') - case 't': - b = append(b, '\t') - case 'x': - if len(s) < 2 { - return nil, errors.New("short escape") - } - n, err := strconv.ParseUint(s[:2], 16, 8) - if err != nil { - return nil, err - } - b = append(b, byte(n)) - s = s[2:] - case '0': - if len(s) < 3 { - return nil, errors.New("short escape") - } - n, err := strconv.ParseUint(s[:3], 8, 8) - if err != nil { - return nil, err - } - b = append(b, byte(n)) - s = s[3:] - default: - b = append(b, c) - } - } - return append(b, 0), nil -} - -func varInfer(n varNode) (Signature, error) { - if sig, ok := n.Sigs().Single(); ok { - return sig, nil - } - return n.Infer() -} |