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fw-daemon
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pull/16/head
User 9 years ago
parent e254dcb8ab
commit aa05f01fe1
56 changed files with 6815 additions and 5 deletions
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15
Godeps/Godeps.json generated
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{
"ImportPath": "github.com/subgraph/fw-daemon",
"GoVersion": "go1.5",
"Deps": [
{
"ImportPath": "github.com/godbus/dbus",
"Comment": "v3-6-ga1b8ba5",
"Rev": "a1b8ba5163b7f041b22761461eabd02b70d1f824"
},
{
"ImportPath": "github.com/op/go-logging",
"Rev": "dfaf3dff9b631bc4236201d90d41ee0de9202889"
}
]
}

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Godeps/Readme generated
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This directory tree is generated automatically by godep.
Please do not edit.
See https://github.com/tools/godep for more information.

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/pkg
/bin

50
Godeps/_workspace/src/github.com/godbus/dbus/CONTRIBUTING.md generated vendored
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# How to Contribute
## Getting Started
- Fork the repository on GitHub
- Read the [README](README.markdown) for build and test instructions
- Play with the project, submit bugs, submit patches!
## Contribution Flow
This is a rough outline of what a contributor's workflow looks like:
- Create a topic branch from where you want to base your work (usually master).
- Make commits of logical units.
- Make sure your commit messages are in the proper format (see below).
- Push your changes to a topic branch in your fork of the repository.
- Make sure the tests pass, and add any new tests as appropriate.
- Submit a pull request to the original repository.
Thanks for your contributions!
### Format of the Commit Message
We follow a rough convention for commit messages that is designed to answer two
questions: what changed and why. The subject line should feature the what and
the body of the commit should describe the why.
```
scripts: add the test-cluster command
this uses tmux to setup a test cluster that you can easily kill and
start for debugging.
Fixes #38
```
The format can be described more formally as follows:
```
<subsystem>: <what changed>
<BLANK LINE>
<why this change was made>
<BLANK LINE>
<footer>
```
The first line is the subject and should be no longer than 70 characters, the
second line is always blank, and other lines should be wrapped at 80 characters.
This allows the message to be easier to read on GitHub as well as in various
git tools.

25
Godeps/_workspace/src/github.com/godbus/dbus/LICENSE generated vendored
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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.

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Godeps/_workspace/src/github.com/godbus/dbus/MAINTAINERS generated vendored
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Brandon Philips <brandon@ifup.org> (@philips)
Brian Waldon <brian@waldon.cc> (@bcwaldon)

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Godeps/_workspace/src/github.com/godbus/dbus/README.markdown generated vendored
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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.

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Godeps/_workspace/src/github.com/godbus/dbus/auth.go generated vendored
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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
}

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Godeps/_workspace/src/github.com/godbus/dbus/auth_external.go generated vendored
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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
}

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Godeps/_workspace/src/github.com/godbus/dbus/auth_sha1.go generated vendored
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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
}

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Godeps/_workspace/src/github.com/godbus/dbus/call.go generated vendored
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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...)
}

625
Godeps/_workspace/src/github.com/godbus/dbus/conn.go generated vendored
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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]
}

21
Godeps/_workspace/src/github.com/godbus/dbus/conn_darwin.go generated vendored
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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]))
}

27
Godeps/_workspace/src/github.com/godbus/dbus/conn_other.go generated vendored
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// +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]))
}

258
Godeps/_workspace/src/github.com/godbus/dbus/dbus.go generated vendored
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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 == '_'
}

228
Godeps/_workspace/src/github.com/godbus/dbus/decoder.go generated vendored
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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)
}

63
Godeps/_workspace/src/github.com/godbus/dbus/doc.go generated vendored
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/*
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

208
Godeps/_workspace/src/github.com/godbus/dbus/encoder.go generated vendored
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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()})
}
}

411
Godeps/_workspace/src/github.com/godbus/dbus/export.go generated vendored
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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
)

28
Godeps/_workspace/src/github.com/godbus/dbus/homedir.go generated vendored
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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
}

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Godeps/_workspace/src/github.com/godbus/dbus/homedir_dynamic.go generated vendored
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// +build !static_build
package dbus
import (
"os/user"
)
func lookupHomeDir() string {
u, err := user.Current()
if err != nil {
return "/"
}
return u.HomeDir
}

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Godeps/_workspace/src/github.com/godbus/dbus/homedir_static.go generated vendored
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// +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 "/"
}

27
Godeps/_workspace/src/github.com/godbus/dbus/introspect/call.go generated vendored
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package introspect
import (
"encoding/xml"
"github.com/subgraph/fw-daemon/Godeps/_workspace/src/github.com/godbus/dbus"
"strings"
)
// Call calls org.freedesktop.Introspectable.Introspect on a remote object
// and returns the introspection data.
func Call(o dbus.BusObject) (*Node, error) {
var xmldata string
var node Node
err := o.Call("org.freedesktop.DBus.Introspectable.Introspect", 0).Store(&xmldata)
if err != nil {
return nil, err
}
err = xml.NewDecoder(strings.NewReader(xmldata)).Decode(&node)
if err != nil {
return nil, err
}
if node.Name == "" {
node.Name = string(o.Path())
}
return &node, nil
}

86
Godeps/_workspace/src/github.com/godbus/dbus/introspect/introspect.go generated vendored
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// Package introspect provides some utilities for dealing with the DBus
// introspection format.
package introspect
import "encoding/xml"
// The introspection data for the org.freedesktop.DBus.Introspectable interface.
var IntrospectData = Interface{
Name: "org.freedesktop.DBus.Introspectable",
Methods: []Method{
{
Name: "Introspect",
Args: []Arg{
{"out", "s", "out"},
},
},
},
}
// XML document type declaration of the introspection format version 1.0
const IntrospectDeclarationString = `
<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
`
// The introspection data for the org.freedesktop.DBus.Introspectable interface,
// as a string.
const IntrospectDataString = `
<interface name="org.freedesktop.DBus.Introspectable">
<method name="Introspect">
<arg name="out" direction="out" type="s"/>
</method>
</interface>
`
// Node is the root element of an introspection.
type Node struct {
XMLName xml.Name `xml:"node"`
Name string `xml:"name,attr,omitempty"`
Interfaces []Interface `xml:"interface"`
Children []Node `xml:"node,omitempty"`
}
// Interface describes a DBus interface that is available on the message bus.
type Interface struct {
Name string `xml:"name,attr"`
Methods []Method `xml:"method"`
Signals []Signal `xml:"signal"`
Properties []Property `xml:"property"`
Annotations []Annotation `xml:"annotation"`
}
// Method describes a Method on an Interface as retured by an introspection.
type Method struct {
Name string `xml:"name,attr"`
Args []Arg `xml:"arg"`
Annotations []Annotation `xml:"annotation"`
}
// Signal describes a Signal emitted on an Interface.
type Signal struct {
Name string `xml:"name,attr"`
Args []Arg `xml:"arg"`
Annotations []Annotation `xml:"annotation"`
}
// Property describes a property of an Interface.
type Property struct {
Name string `xml:"name,attr"`
Type string `xml:"type,attr"`
Access string `xml:"access,attr"`
Annotations []Annotation `xml:"annotation"`
}
// Arg represents an argument of a method or a signal.
type Arg struct {
Name string `xml:"name,attr,omitempty"`
Type string `xml:"type,attr"`
Direction string `xml:"direction,attr,omitempty"`
}
// Annotation is an annotation in the introspection format.
type Annotation struct {
Name string `xml:"name,attr"`
Value string `xml:"value,attr"`
}

76
Godeps/_workspace/src/github.com/godbus/dbus/introspect/introspectable.go generated vendored
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package introspect
import (
"encoding/xml"
"github.com/subgraph/fw-daemon/Godeps/_workspace/src/github.com/godbus/dbus"
"reflect"
"strings"
)
// Introspectable implements org.freedesktop.Introspectable.
//
// You can create it by converting the XML-formatted introspection data from a
// string to an Introspectable or call NewIntrospectable with a Node. Then,
// export it as org.freedesktop.Introspectable on you object.
type Introspectable string
// NewIntrospectable returns an Introspectable that returns the introspection
// data that corresponds to the given Node. If n.Interfaces doesn't contain the
// data for org.freedesktop.DBus.Introspectable, it is added automatically.
func NewIntrospectable(n *Node) Introspectable {
found := false
for _, v := range n.Interfaces {
if v.Name == "org.freedesktop.DBus.Introspectable" {
found = true
break
}
}
if !found {
n.Interfaces = append(n.Interfaces, IntrospectData)
}
b, err := xml.Marshal(n)
if err != nil {
panic(err)
}
return Introspectable(strings.TrimSpace(IntrospectDeclarationString) + string(b))
}
// Introspect implements org.freedesktop.Introspectable.Introspect.
func (i Introspectable) Introspect() (string, *dbus.Error) {
return string(i), nil
}
// Methods returns the description of the methods of v. This can be used to
// create a Node which can be passed to NewIntrospectable.
func Methods(v interface{}) []Method {
t := reflect.TypeOf(v)
ms := make([]Method, 0, t.NumMethod())
for i := 0; i < t.NumMethod(); i++ {
if t.Method(i).PkgPath != "" {
continue
}
mt := t.Method(i).Type
if mt.NumOut() == 0 ||
mt.Out(mt.NumOut()-1) != reflect.TypeOf(&dbus.Error{}) {
continue
}
var m Method
m.Name = t.Method(i).Name
m.Args = make([]Arg, 0, mt.NumIn()+mt.NumOut()-2)
for j := 1; j < mt.NumIn(); j++ {
if mt.In(j) != reflect.TypeOf((*dbus.Sender)(nil)).Elem() &&
mt.In(j) != reflect.TypeOf((*dbus.Message)(nil)).Elem() {
arg := Arg{"", dbus.SignatureOfType(mt.In(j)).String(), "in"}
m.Args = append(m.Args, arg)
}
}
for j := 0; j < mt.NumOut()-1; j++ {
arg := Arg{"", dbus.SignatureOfType(mt.Out(j)).String(), "out"}
m.Args = append(m.Args, arg)
}
m.Annotations = make([]Annotation, 0)
ms = append(ms, m)
}
return ms
}

346
Godeps/_workspace/src/github.com/godbus/dbus/message.go generated vendored
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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
}

136
Godeps/_workspace/src/github.com/godbus/dbus/object.go generated vendored
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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
}
// AddMatchSignal subscribes BusObject to signals from specified interface and
// method (member).
func (o *Object) AddMatchSignal(iface, member string) *Call {
return o.Call(
"org.freedesktop.DBus.AddMatch",
0,
"type='signal',interface='"+iface+"',member='"+member+"'",
)
}
// 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
}

264
Godeps/_workspace/src/github.com/godbus/dbus/prop/prop.go generated vendored
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// Package prop provides the Properties struct which can be used to implement
// org.freedesktop.DBus.Properties.
package prop
import (
"github.com/subgraph/fw-daemon/Godeps/_workspace/src/github.com/godbus/dbus"
"github.com/subgraph/fw-daemon/Godeps/_workspace/src/github.com/godbus/dbus/introspect"
"sync"
)
// EmitType controls how org.freedesktop.DBus.Properties.PropertiesChanged is
// emitted for a property. If it is EmitTrue, the signal is emitted. If it is
// EmitInvalidates, the signal is also emitted, but the new value of the property
// is not disclosed.
type EmitType byte
const (
EmitFalse EmitType = iota
EmitTrue
EmitInvalidates
)
// ErrIfaceNotFound is the error returned to peers who try to access properties
// on interfaces that aren't found.
var ErrIfaceNotFound = dbus.NewError("org.freedesktop.DBus.Properties.Error.InterfaceNotFound", nil)
// ErrPropNotFound is the error returned to peers trying to access properties
// that aren't found.
var ErrPropNotFound = dbus.NewError("org.freedesktop.DBus.Properties.Error.PropertyNotFound", nil)
// ErrReadOnly is the error returned to peers trying to set a read-only
// property.
var ErrReadOnly = dbus.NewError("org.freedesktop.DBus.Properties.Error.ReadOnly", nil)
// ErrInvalidArg is returned to peers if the type of the property that is being
// changed and the argument don't match.
var ErrInvalidArg = dbus.NewError("org.freedesktop.DBus.Properties.Error.InvalidArg", nil)
// The introspection data for the org.freedesktop.DBus.Properties interface.
var IntrospectData = introspect.Interface{
Name: "org.freedesktop.DBus.Properties",
Methods: []introspect.Method{
{
Name: "Get",
Args: []introspect.Arg{
{"interface", "s", "in"},
{"property", "s", "in"},
{"value", "v", "out"},
},
},
{
Name: "GetAll",
Args: []introspect.Arg{
{"interface", "s", "in"},
{"props", "a{sv}", "out"},
},
},
{
Name: "Set",
Args: []introspect.Arg{
{"interface", "s", "in"},
{"property", "s", "in"},
{"value", "v", "in"},
},
},
},
Signals: []introspect.Signal{
{
Name: "PropertiesChanged",
Args: []introspect.Arg{
{"interface", "s", "out"},
{"changed_properties", "a{sv}", "out"},
{"invalidates_properties", "as", "out"},
},
},
},
}
// The introspection data for the org.freedesktop.DBus.Properties interface, as
// a string.
const IntrospectDataString = `
<interface name="org.freedesktop.DBus.Properties">
<method name="Get">
<arg name="interface" direction="in" type="s"/>
<arg name="property" direction="in" type="s"/>
<arg name="value" direction="out" type="v"/>
</method>
<method name="GetAll">
<arg name="interface" direction="in" type="s"/>
<arg name="props" direction="out" type="a{sv}"/>
</method>
<method name="Set">
<arg name="interface" direction="in" type="s"/>
<arg name="property" direction="in" type="s"/>
<arg name="value" direction="in" type="v"/>
</method>
<signal name="PropertiesChanged">
<arg name="interface" type="s"/>
<arg name="changed_properties" type="a{sv}"/>
<arg name="invalidates_properties" type="as"/>
</signal>
</interface>
`
// Prop represents a single property. It is used for creating a Properties
// value.
type Prop struct {
// Initial value. Must be a DBus-representable type.
Value interface{}
// If true, the value can be modified by calls to Set.
Writable bool
// Controls how org.freedesktop.DBus.Properties.PropertiesChanged is
// emitted if this property changes.
Emit EmitType
// If not nil, anytime this property is changed by Set, this function is
// called with an appropiate Change as its argument. If the returned error
// is not nil, it is sent back to the caller of Set and the property is not
// changed.
Callback func(*Change) *dbus.Error
}
// Change represents a change of a property by a call to Set.
type Change struct {
Props *Properties
Iface string
Name string
Value interface{}
}
// Properties is a set of values that can be made available to the message bus
// using the org.freedesktop.DBus.Properties interface. It is safe for
// concurrent use by multiple goroutines.
type Properties struct {
m map[string]map[string]*Prop
mut sync.RWMutex
conn *dbus.Conn
path dbus.ObjectPath
}
// New returns a new Properties structure that manages the given properties.
// The key for the first-level map of props is the name of the interface; the
// second-level key is the name of the property. The returned structure will be
// exported as org.freedesktop.DBus.Properties on path.
func New(conn *dbus.Conn, path dbus.ObjectPath, props map[string]map[string]*Prop) *Properties {
p := &Properties{m: props, conn: conn, path: path}
conn.Export(p, path, "org.freedesktop.DBus.Properties")
return p
}
// Get implements org.freedesktop.DBus.Properties.Get.
func (p *Properties) Get(iface, property string) (dbus.Variant, *dbus.Error) {
p.mut.RLock()
defer p.mut.RUnlock()
m, ok := p.m[iface]
if !ok {
return dbus.Variant{}, ErrIfaceNotFound
}
prop, ok := m[property]
if !ok {
return dbus.Variant{}, ErrPropNotFound
}
return dbus.MakeVariant(prop.Value), nil
}
// GetAll implements org.freedesktop.DBus.Properties.GetAll.
func (p *Properties) GetAll(iface string) (map[string]dbus.Variant, *dbus.Error) {
p.mut.RLock()
defer p.mut.RUnlock()
m, ok := p.m[iface]
if !ok {
return nil, ErrIfaceNotFound
}
rm := make(map[string]dbus.Variant, len(m))
for k, v := range m {
rm[k] = dbus.MakeVariant(v.Value)
}
return rm, nil
}
// GetMust returns the value of the given property and panics if either the
// interface or the property name are invalid.
func (p *Properties) GetMust(iface, property string) interface{} {
p.mut.RLock()
defer p.mut.RUnlock()
return p.m[iface][property].Value
}
// Introspection returns the introspection data that represents the properties
// of iface.
func (p *Properties) Introspection(iface string) []introspect.Property {
p.mut.RLock()
defer p.mut.RUnlock()
m := p.m[iface]
s := make([]introspect.Property, 0, len(m))
for k, v := range m {
p := introspect.Property{Name: k, Type: dbus.SignatureOf(v.Value).String()}
if v.Writable {
p.Access = "readwrite"
} else {
p.Access = "read"
}
s = append(s, p)
}
return s
}
// set sets the given property and emits PropertyChanged if appropiate. p.mut
// must already be locked.
func (p *Properties) set(iface, property string, v interface{}) {
prop := p.m[iface][property]
prop.Value = v
switch prop.Emit {
case EmitFalse:
// do nothing
case EmitInvalidates:
p.conn.Emit(p.path, "org.freedesktop.DBus.Properties.PropertiesChanged",
iface, map[string]dbus.Variant{}, []string{property})
case EmitTrue:
p.conn.Emit(p.path, "org.freedesktop.DBus.Properties.PropertiesChanged",
iface, map[string]dbus.Variant{property: dbus.MakeVariant(v)},
[]string{})
default:
panic("invalid value for EmitType")
}
}
// Set implements org.freedesktop.Properties.Set.
func (p *Properties) Set(iface, property string, newv dbus.Variant) *dbus.Error {
p.mut.Lock()
defer p.mut.Unlock()
m, ok := p.m[iface]
if !ok {
return ErrIfaceNotFound
}
prop, ok := m[property]
if !ok {
return ErrPropNotFound
}
if !prop.Writable {
return ErrReadOnly
}
if newv.Signature() != dbus.SignatureOf(prop.Value) {
return ErrInvalidArg
}
if prop.Callback != nil {
err := prop.Callback(&Change{p, iface, property, newv.Value()})
if err != nil {
return err
}
}
p.set(iface, property, newv.Value())
return nil
}
// SetMust sets the value of the given property and panics if the interface or
// the property name are invalid.
func (p *Properties) SetMust(iface, property string, v interface{}) {
p.mut.Lock()
p.set(iface, property, v)
p.mut.Unlock()
}

257
Godeps/_workspace/src/github.com/godbus/dbus/sig.go generated vendored
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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
}

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Godeps/_workspace/src/github.com/godbus/dbus/transport_darwin.go generated vendored
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package dbus
func (t *unixTransport) SendNullByte() error {
_, err := t.Write([]byte{0})
return err
}

35
Godeps/_workspace/src/github.com/godbus/dbus/transport_generic.go generated vendored
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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)
}

196
Godeps/_workspace/src/github.com/godbus/dbus/transport_unix.go generated vendored
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//+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
}

95
Godeps/_workspace/src/github.com/godbus/dbus/transport_unixcred_dragonfly.go generated vendored
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// 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
}

25
Godeps/_workspace/src/github.com/godbus/dbus/transport_unixcred_linux.go generated vendored
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// 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
}

139
Godeps/_workspace/src/github.com/godbus/dbus/variant.go generated vendored
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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
}

284
Godeps/_workspace/src/github.com/godbus/dbus/variant_lexer.go generated vendored
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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
}

817
Godeps/_workspace/src/github.com/godbus/dbus/variant_parser.go generated vendored
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@ -0,0 +1,817 @@
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()
}

6
Godeps/_workspace/src/github.com/op/go-logging/.travis.yml generated vendored
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language: go
go:
- 1.0
- 1.1
- tip

5
Godeps/_workspace/src/github.com/op/go-logging/CONTRIBUTORS generated vendored
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Alec Thomas <alec@swapoff.org>
Guilhem Lettron <guilhem.lettron@optiflows.com>
Ivan Daniluk <ivan.daniluk@gmail.com>
Nimi Wariboko Jr <nimi@channelmeter.com>
Róbert Selvek <robert.selvek@gmail.com>

27
Godeps/_workspace/src/github.com/op/go-logging/LICENSE generated vendored
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Copyright (c) 2013 Örjan Persson. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* 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.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
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
OWNER 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.

89
Godeps/_workspace/src/github.com/op/go-logging/README.md generated vendored
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## Golang logging library
[![godoc](http://img.shields.io/badge/godoc-reference-blue.svg?style=flat)](https://godoc.org/github.com/op/go-logging) [![build](https://img.shields.io/travis/op/go-logging.svg?style=flat)](https://travis-ci.org/op/go-logging)
Package logging implements a logging infrastructure for Go. Its output format
is customizable and supports different logging backends like syslog, file and
memory. Multiple backends can be utilized with different log levels per backend
and logger.
## Example
Let's have a look at an [example](examples/example.go) which demonstrates most
of the features found in this library.
[![Example Output](examples/example.png)](examples/example.go)
```go
package main
import (
"os"
"github.com/op/go-logging"
)
var log = logging.MustGetLogger("example")
// Example format string. Everything except the message has a custom color
// which is dependent on the log level. Many fields have a custom output
// formatting too, eg. the time returns the hour down to the milli second.
var format = logging.MustStringFormatter(
`%{color}%{time:15:04:05.000} %{shortfunc} ▶ %{level:.4s} %{id:03x}%{color:reset} %{message}`,
)
// Password is just an example type implementing the Redactor interface. Any
// time this is logged, the Redacted() function will be called.
type Password string
func (p Password) Redacted() interface{} {
return logging.Redact(string(p))
}
func main() {
// For demo purposes, create two backend for os.Stderr.
backend1 := logging.NewLogBackend(os.Stderr, "", 0)
backend2 := logging.NewLogBackend(os.Stderr, "", 0)
// For messages written to backend2 we want to add some additional
// information to the output, including the used log level and the name of
// the function.
backend2Formatter := logging.NewBackendFormatter(backend2, format)
// Only errors and more severe messages should be sent to backend1
backend1Leveled := logging.AddModuleLevel(backend1)
backend1Leveled.SetLevel(logging.ERROR, "")
// Set the backends to be used.
logging.SetBackend(backend1Leveled, backend2Formatter)
log.Debugf("debug %s", Password("secret"))
log.Info("info")
log.Notice("notice")
log.Warning("warning")
log.Error("err")
log.Critical("crit")
}
```
## Installing
### Using *go get*
$ go get github.com/op/go-logging
After this command *go-logging* is ready to use. Its source will be in:
$GOROOT/src/pkg/github.com/op/go-logging
You can use `go get -u` to update the package.
## Documentation
For docs, see http://godoc.org/github.com/op/go-logging or run:
$ godoc github.com/op/go-logging
## Additional resources
* [wslog](https://godoc.org/github.com/cryptix/go/logging/wslog) -- exposes log messages through a WebSocket.

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// Copyright 2013, Örjan Persson. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package logging
// defaultBackend is the backend used for all logging calls.
var defaultBackend LeveledBackend
// Backend is the interface which a log backend need to implement to be able to
// be used as a logging backend.
type Backend interface {
Log(Level, int, *Record) error
}
// SetBackend replaces the backend currently set with the given new logging
// backend.
func SetBackend(backends ...Backend) LeveledBackend {
var backend Backend
if len(backends) == 1 {
backend = backends[0]
} else {
backend = MultiLogger(backends...)
}
defaultBackend = AddModuleLevel(backend)
return defaultBackend
}
// SetLevel sets the logging level for the specified module. The module
// corresponds to the string specified in GetLogger.
func SetLevel(level Level, module string) {
defaultBackend.SetLevel(level, module)
}
// GetLevel returns the logging level for the specified module.
func GetLevel(module string) Level {
return defaultBackend.GetLevel(module)
}

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package main
import (
"os"
"github.com/subgraph/fw-daemon/Godeps/_workspace/src/github.com/op/go-logging"
)
var log = logging.MustGetLogger("example")
// Example format string. Everything except the message has a custom color
// which is dependent on the log level. Many fields have a custom output
// formatting too, eg. the time returns the hour down to the milli second.
var format = logging.MustStringFormatter(
`%{color}%{time:15:04:05.000} %{shortfunc} ▶ %{level:.4s} %{id:03x}%{color:reset} %{message}`,
)
// Password is just an example type implementing the Redactor interface. Any
// time this is logged, the Redacted() function will be called.
type Password string
func (p Password) Redacted() interface{} {
return logging.Redact(string(p))
}
func main() {
// For demo purposes, create two backend for os.Stderr.
backend1 := logging.NewLogBackend(os.Stderr, "", 0)
backend2 := logging.NewLogBackend(os.Stderr, "", 0)
// For messages written to backend2 we want to add some additional
// information to the output, including the used log level and the name of
// the function.
backend2Formatter := logging.NewBackendFormatter(backend2, format)
// Only errors and more severe messages should be sent to backend1
backend1Leveled := logging.AddModuleLevel(backend1)
backend1Leveled.SetLevel(logging.ERROR, "")
// Set the backends to be used.
logging.SetBackend(backend1Leveled, backend2Formatter)
log.Debugf("debug %s", Password("secret"))
log.Info("info")
log.Notice("notice")
log.Warning("warning")
log.Error("err")
log.Critical("crit")
}

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// Copyright 2013, Örjan Persson. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package logging
import (
"bytes"
"errors"
"fmt"
"io"
"os"
"path"
"path/filepath"
"regexp"
"runtime"
"strings"
"sync"
"time"
)
// TODO see Formatter interface in fmt/print.go
// TODO try text/template, maybe it have enough performance
// TODO other template systems?
// TODO make it possible to specify formats per backend?
type fmtVerb int
const (
fmtVerbTime fmtVerb = iota
fmtVerbLevel
fmtVerbID
fmtVerbPid
fmtVerbProgram
fmtVerbModule
fmtVerbMessage
fmtVerbLongfile
fmtVerbShortfile
fmtVerbLongpkg
fmtVerbShortpkg
fmtVerbLongfunc
fmtVerbShortfunc
fmtVerbLevelColor
// Keep last, there are no match for these below.
fmtVerbUnknown
fmtVerbStatic
)
var fmtVerbs = []string{
"time",
"level",
"id",
"pid",
"program",
"module",
"message",
"longfile",
"shortfile",
"longpkg",
"shortpkg",
"longfunc",
"shortfunc",
"color",
}
const rfc3339Milli = "2006-01-02T15:04:05.999Z07:00"
var defaultVerbsLayout = []string{
rfc3339Milli,
"s",
"d",
"d",
"s",
"s",
"s",
"s",
"s",
"s",
"s",
"s",
"s",
"",
}
var (
pid = os.Getpid()
program = filepath.Base(os.Args[0])
)
func getFmtVerbByName(name string) fmtVerb {
for i, verb := range fmtVerbs {
if name == verb {
return fmtVerb(i)
}
}
return fmtVerbUnknown
}
// Formatter is the required interface for a custom log record formatter.
type Formatter interface {
Format(calldepth int, r *Record, w io.Writer) error
}
// formatter is used by all backends unless otherwise overriden.
var formatter struct {
sync.RWMutex
def Formatter
}
func getFormatter() Formatter {
formatter.RLock()
defer formatter.RUnlock()
return formatter.def
}
var (
// DefaultFormatter is the default formatter used and is only the message.
DefaultFormatter = MustStringFormatter("%{message}")
// GlogFormatter mimics the glog format
GlogFormatter = MustStringFormatter("%{level:.1s}%{time:0102 15:04:05.999999} %{pid} %{shortfile}] %{message}")
)
// SetFormatter sets the default formatter for all new backends. A backend will
// fetch this value once it is needed to format a record. Note that backends
// will cache the formatter after the first point. For now, make sure to set
// the formatter before logging.
func SetFormatter(f Formatter) {
formatter.Lock()
defer formatter.Unlock()
formatter.def = f
}
var formatRe = regexp.MustCompile(`%{([a-z]+)(?::(.*?[^\\]))?}`)
type part struct {
verb fmtVerb
layout string
}
// stringFormatter contains a list of parts which explains how to build the
// formatted string passed on to the logging backend.
type stringFormatter struct {
parts []part
}
// NewStringFormatter returns a new Formatter which outputs the log record as a
// string based on the 'verbs' specified in the format string.
//
// The verbs:
//
// General:
// %{id} Sequence number for log message (uint64).
// %{pid} Process id (int)
// %{time} Time when log occurred (time.Time)
// %{level} Log level (Level)
// %{module} Module (string)
// %{program} Basename of os.Args[0] (string)
// %{message} Message (string)
// %{longfile} Full file name and line number: /a/b/c/d.go:23
// %{shortfile} Final file name element and line number: d.go:23
// %{color} ANSI color based on log level
//
// For normal types, the output can be customized by using the 'verbs' defined
// in the fmt package, eg. '%{id:04d}' to make the id output be '%04d' as the
// format string.
//
// For time.Time, use the same layout as time.Format to change the time format
// when output, eg "2006-01-02T15:04:05.999Z-07:00".
//
// For the 'color' verb, the output can be adjusted to either use bold colors,
// i.e., '%{color:bold}' or to reset the ANSI attributes, i.e.,
// '%{color:reset}' Note that if you use the color verb explicitly, be sure to
// reset it or else the color state will persist past your log message. e.g.,
// "%{color:bold}%{time:15:04:05} %{level:-8s}%{color:reset} %{message}" will
// just colorize the time and level, leaving the message uncolored.
//
// Colors on Windows is unfortunately not supported right now and is currently
// a no-op.
//
// There's also a couple of experimental 'verbs'. These are exposed to get
// feedback and needs a bit of tinkering. Hence, they might change in the
// future.
//
// Experimental:
// %{longpkg} Full package path, eg. github.com/go-logging
// %{shortpkg} Base package path, eg. go-logging
// %{longfunc} Full function name, eg. littleEndian.PutUint32
// %{shortfunc} Base function name, eg. PutUint32
func NewStringFormatter(format string) (Formatter, error) {
var fmter = &stringFormatter{}
// Find the boundaries of all %{vars}
matches := formatRe.FindAllStringSubmatchIndex(format, -1)
if matches == nil {
return nil, errors.New("logger: invalid log format: " + format)
}
// Collect all variables and static text for the format
prev := 0
for _, m := range matches {
start, end := m[0], m[1]
if start > prev {
fmter.add(fmtVerbStatic, format[prev:start])
}
name := format[m[2]:m[3]]
verb := getFmtVerbByName(name)
if verb == fmtVerbUnknown {
return nil, errors.New("logger: unknown variable: " + name)
}
// Handle layout customizations or use the default. If this is not for the
// time or color formatting, we need to prefix with %.
layout := defaultVerbsLayout[verb]
if m[4] != -1 {
layout = format[m[4]:m[5]]
}
if verb != fmtVerbTime && verb != fmtVerbLevelColor {
layout = "%" + layout
}
fmter.add(verb, layout)
prev = end
}
end := format[prev:]
if end != "" {
fmter.add(fmtVerbStatic, end)
}
// Make a test run to make sure we can format it correctly.
t, err := time.Parse(time.RFC3339, "2010-02-04T21:00:57-08:00")
if err != nil {
panic(err)
}
r := &Record{
Id: 12345,
Time: t,
Module: "logger",
fmt: "hello %s",
args: []interface{}{"go"},
}
if err := fmter.Format(0, r, &bytes.Buffer{}); err != nil {
return nil, err
}
return fmter, nil
}
// MustStringFormatter is equivalent to NewStringFormatter with a call to panic
// on error.
func MustStringFormatter(format string) Formatter {
f, err := NewStringFormatter(format)
if err != nil {
panic("Failed to initialized string formatter: " + err.Error())
}
return f
}
func (f *stringFormatter) add(verb fmtVerb, layout string) {
f.parts = append(f.parts, part{verb, layout})
}
func (f *stringFormatter) Format(calldepth int, r *Record, output io.Writer) error {
for _, part := range f.parts {
if part.verb == fmtVerbStatic {
output.Write([]byte(part.layout))
} else if part.verb == fmtVerbTime {
output.Write([]byte(r.Time.Format(part.layout)))
} else if part.verb == fmtVerbLevelColor {
doFmtVerbLevelColor(part.layout, r.Level, output)
} else {
var v interface{}
switch part.verb {
case fmtVerbLevel:
v = r.Level
break
case fmtVerbID:
v = r.Id
break
case fmtVerbPid:
v = pid
break
case fmtVerbProgram:
v = program
break
case fmtVerbModule:
v = r.Module
break
case fmtVerbMessage:
v = r.Message()
break
case fmtVerbLongfile, fmtVerbShortfile:
_, file, line, ok := runtime.Caller(calldepth + 1)
if !ok {
file = "???"
line = 0
} else if part.verb == fmtVerbShortfile {
file = filepath.Base(file)
}
v = fmt.Sprintf("%s:%d", file, line)
case fmtVerbLongfunc, fmtVerbShortfunc,
fmtVerbLongpkg, fmtVerbShortpkg:
// TODO cache pc
v = "???"
if pc, _, _, ok := runtime.Caller(calldepth + 1); ok {
if f := runtime.FuncForPC(pc); f != nil {
v = formatFuncName(part.verb, f.Name())
}
}
default:
panic("unhandled format part")
}
fmt.Fprintf(output, part.layout, v)
}
}
return nil
}
// formatFuncName tries to extract certain part of the runtime formatted
// function name to some pre-defined variation.
//
// This function is known to not work properly if the package path or name
// contains a dot.
func formatFuncName(v fmtVerb, f string) string {
i := strings.LastIndex(f, "/")
j := strings.Index(f[i+1:], ".")
if j < 1 {
return "???"
}
pkg, fun := f[:i+j+1], f[i+j+2:]
switch v {
case fmtVerbLongpkg:
return pkg
case fmtVerbShortpkg:
return path.Base(pkg)
case fmtVerbLongfunc:
return fun
case fmtVerbShortfunc:
i = strings.LastIndex(fun, ".")
return fun[i+1:]
}
panic("unexpected func formatter")
}
// backendFormatter combines a backend with a specific formatter making it
// possible to have different log formats for different backends.
type backendFormatter struct {
b Backend
f Formatter
}
// NewBackendFormatter creates a new backend which makes all records that
// passes through it beeing formatted by the specific formatter.
func NewBackendFormatter(b Backend, f Formatter) Backend {
return &backendFormatter{b, f}
}
// Log implements the Log function required by the Backend interface.
func (bf *backendFormatter) Log(level Level, calldepth int, r *Record) error {
// Make a shallow copy of the record and replace any formatter
r2 := *r
r2.formatter = bf.f
return bf.b.Log(level, calldepth+1, &r2)
}

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// Copyright 2013, Örjan Persson. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package logging
import (
"errors"
"strings"
"sync"
)
// ErrInvalidLogLevel is used when an invalid log level has been used.
var ErrInvalidLogLevel = errors.New("logger: invalid log level")
// Level defines all available log levels for log messages.
type Level int
// Log levels.
const (
CRITICAL Level = iota
ERROR
WARNING
NOTICE
INFO
DEBUG
)
var levelNames = []string{
"CRITICAL",
"ERROR",
"WARNING",
"NOTICE",
"INFO",
"DEBUG",
}
// String returns the string representation of a logging level.
func (p Level) String() string {
return levelNames[p]
}
// LogLevel returns the log level from a string representation.
func LogLevel(level string) (Level, error) {
for i, name := range levelNames {
if strings.EqualFold(name, level) {
return Level(i), nil
}
}
return ERROR, ErrInvalidLogLevel
}
// Leveled interface is the interface required to be able to add leveled
// logging.
type Leveled interface {
GetLevel(string) Level
SetLevel(Level, string)
IsEnabledFor(Level, string) bool
}
// LeveledBackend is a log backend with additional knobs for setting levels on
// individual modules to different levels.
type LeveledBackend interface {
Backend
Leveled
}
type moduleLeveled struct {
levels map[string]Level
backend Backend
formatter Formatter
once sync.Once
}
// AddModuleLevel wraps a log backend with knobs to have different log levels
// for different modules.
func AddModuleLevel(backend Backend) LeveledBackend {
var leveled LeveledBackend
var ok bool
if leveled, ok = backend.(LeveledBackend); !ok {
leveled = &moduleLeveled{
levels: make(map[string]Level),
backend: backend,
}
}
return leveled
}
// GetLevel returns the log level for the given module.
func (l *moduleLeveled) GetLevel(module string) Level {
level, exists := l.levels[module]
if exists == false {
level, exists = l.levels[""]
// no configuration exists, default to debug
if exists == false {
level = DEBUG
}
}
return level
}
// SetLevel sets the log level for the given module.
func (l *moduleLeveled) SetLevel(level Level, module string) {
l.levels[module] = level
}
// IsEnabledFor will return true if logging is enabled for the given module.
func (l *moduleLeveled) IsEnabledFor(level Level, module string) bool {
return level <= l.GetLevel(module)
}
func (l *moduleLeveled) Log(level Level, calldepth int, rec *Record) (err error) {
if l.IsEnabledFor(level, rec.Module) {
// TODO get rid of traces of formatter here. BackendFormatter should be used.
rec.formatter = l.getFormatterAndCacheCurrent()
err = l.backend.Log(level, calldepth+1, rec)
}
return
}
func (l *moduleLeveled) getFormatterAndCacheCurrent() Formatter {
l.once.Do(func() {
if l.formatter == nil {
l.formatter = getFormatter()
}
})
return l.formatter
}

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// +build !windows
// Copyright 2013, Örjan Persson. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package logging
import (
"bytes"
"fmt"
"io"
"log"
)
type color int
const (
colorBlack = iota + 30
colorRed
colorGreen
colorYellow
colorBlue
colorMagenta
colorCyan
colorWhite
)
var (
colors = []string{
CRITICAL: colorSeq(colorMagenta),
ERROR: colorSeq(colorRed),
WARNING: colorSeq(colorYellow),
NOTICE: colorSeq(colorGreen),
DEBUG: colorSeq(colorCyan),
}
boldcolors = []string{
CRITICAL: colorSeqBold(colorMagenta),
ERROR: colorSeqBold(colorRed),
WARNING: colorSeqBold(colorYellow),
NOTICE: colorSeqBold(colorGreen),
DEBUG: colorSeqBold(colorCyan),
}
)
// LogBackend utilizes the standard log module.
type LogBackend struct {
Logger *log.Logger
Color bool
}
// NewLogBackend creates a new LogBackend.
func NewLogBackend(out io.Writer, prefix string, flag int) *LogBackend {
return &LogBackend{Logger: log.New(out, prefix, flag)}
}
// Log implements the Backend interface.
func (b *LogBackend) Log(level Level, calldepth int, rec *Record) error {
if b.Color {
buf := &bytes.Buffer{}
buf.Write([]byte(colors[level]))
buf.Write([]byte(rec.Formatted(calldepth + 1)))
buf.Write([]byte("\033[0m"))
// For some reason, the Go logger arbitrarily decided "2" was the correct
// call depth...
return b.Logger.Output(calldepth+2, buf.String())
}
return b.Logger.Output(calldepth+2, rec.Formatted(calldepth+1))
}
func colorSeq(color color) string {
return fmt.Sprintf("\033[%dm", int(color))
}
func colorSeqBold(color color) string {
return fmt.Sprintf("\033[%d;1m", int(color))
}
func doFmtVerbLevelColor(layout string, level Level, output io.Writer) {
if layout == "bold" {
output.Write([]byte(boldcolors[level]))
} else if layout == "reset" {
output.Write([]byte("\033[0m"))
} else {
output.Write([]byte(colors[level]))
}
}

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// +build windows
// Copyright 2013, Örjan Persson. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package logging
import (
"bytes"
"io"
"log"
"syscall"
)
var (
kernel32DLL = syscall.NewLazyDLL("kernel32.dll")
setConsoleTextAttributeProc = kernel32DLL.NewProc("SetConsoleTextAttribute")
)
// Character attributes
// Note:
// -- The attributes are combined to produce various colors (e.g., Blue + Green will create Cyan).
// Clearing all foreground or background colors results in black; setting all creates white.
// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms682088(v=vs.85).aspx#_win32_character_attributes.
const (
fgBlack = 0x0000
fgBlue = 0x0001
fgGreen = 0x0002
fgCyan = 0x0003
fgRed = 0x0004
fgMagenta = 0x0005
fgYellow = 0x0006
fgWhite = 0x0007
fgIntensity = 0x0008
fgMask = 0x000F
)
var (
colors = []uint16{
INFO: fgWhite,
CRITICAL: fgMagenta,
ERROR: fgRed,
WARNING: fgYellow,
NOTICE: fgGreen,
DEBUG: fgCyan,
}
boldcolors = []uint16{
INFO: fgWhite | fgIntensity,
CRITICAL: fgMagenta | fgIntensity,
ERROR: fgRed | fgIntensity,
WARNING: fgYellow | fgIntensity,
NOTICE: fgGreen | fgIntensity,
DEBUG: fgCyan | fgIntensity,
}
)
type file interface {
Fd() uintptr
}
// LogBackend utilizes the standard log module.
type LogBackend struct {
Logger *log.Logger
Color bool
// f is set to a non-nil value if the underlying writer which logs writes to
// implements the file interface. This makes us able to colorise the output.
f file
}
// NewLogBackend creates a new LogBackend.
func NewLogBackend(out io.Writer, prefix string, flag int) *LogBackend {
b := &LogBackend{Logger: log.New(out, prefix, flag)}
// Unfortunately, the API used only takes an io.Writer where the Windows API
// need the actual fd to change colors.
if f, ok := out.(file); ok {
b.f = f
}
return b
}
func (b *LogBackend) Log(level Level, calldepth int, rec *Record) error {
if b.Color && b.f != nil {
buf := &bytes.Buffer{}
setConsoleTextAttribute(b.f, colors[level])
buf.Write([]byte(rec.Formatted(calldepth + 1)))
err := b.Logger.Output(calldepth+2, buf.String())
setConsoleTextAttribute(b.f, fgWhite)
return err
}
return b.Logger.Output(calldepth+2, rec.Formatted(calldepth+1))
}
// setConsoleTextAttribute sets the attributes of characters written to the
// console screen buffer by the WriteFile or WriteConsole function.
// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms686047(v=vs.85).aspx.
func setConsoleTextAttribute(f file, attribute uint16) bool {
ok, _, _ := setConsoleTextAttributeProc.Call(f.Fd(), uintptr(attribute), 0)
return ok != 0
}
func doFmtVerbLevelColor(layout string, level Level, output io.Writer) {
// TODO not supported on Windows since the io.Writer here is actually a
// bytes.Buffer.
}

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// Copyright 2013, Örjan Persson. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package logging implements a logging infrastructure for Go. It supports
// different logging backends like syslog, file and memory. Multiple backends
// can be utilized with different log levels per backend and logger.
package logging
import (
"bytes"
"fmt"
"log"
"os"
"strings"
"sync/atomic"
"time"
)
// Redactor is an interface for types that may contain sensitive information
// (like passwords), which shouldn't be printed to the log. The idea was found
// in relog as part of the vitness project.
type Redactor interface {
Redacted() interface{}
}
// Redact returns a string of * having the same length as s.
func Redact(s string) string {
return strings.Repeat("*", len(s))
}
var (
// Sequence number is incremented and utilized for all log records created.
sequenceNo uint64
// timeNow is a customizable for testing purposes.
timeNow = time.Now
)
// Record represents a log record and contains the timestamp when the record
// was created, an increasing id, filename and line and finally the actual
// formatted log line.
type Record struct {
Id uint64
Time time.Time
Module string
Level Level
// message is kept as a pointer to have shallow copies update this once
// needed.
message *string
args []interface{}
fmt string
formatter Formatter
formatted string
}
// Formatted returns the formatted log record string.
func (r *Record) Formatted(calldepth int) string {
if r.formatted == "" {
var buf bytes.Buffer
r.formatter.Format(calldepth+1, r, &buf)
r.formatted = buf.String()
}
return r.formatted
}
// Message returns the log record message.
func (r *Record) Message() string {
if r.message == nil {
// Redact the arguments that implements the Redactor interface
for i, arg := range r.args {
if redactor, ok := arg.(Redactor); ok == true {
r.args[i] = redactor.Redacted()
}
}
msg := fmt.Sprintf(r.fmt, r.args...)
r.message = &msg
}
return *r.message
}
// Logger is the actual logger which creates log records based on the functions
// called and passes them to the underlying logging backend.
type Logger struct {
Module string
backend LeveledBackend
haveBackend bool
// ExtraCallDepth can be used to add additional call depth when getting the
// calling function. This is normally used when wrapping a logger.
ExtraCalldepth int
}
// SetBackend overrides any previously defined backend for this logger.
func (l *Logger) SetBackend(backend LeveledBackend) {
l.backend = backend
l.haveBackend = true
}
// TODO call NewLogger and remove MustGetLogger?
// GetLogger creates and returns a Logger object based on the module name.
func GetLogger(module string) (*Logger, error) {
return &Logger{Module: module}, nil
}
// MustGetLogger is like GetLogger but panics if the logger can't be created.
// It simplifies safe initialization of a global logger for eg. a package.
func MustGetLogger(module string) *Logger {
logger, err := GetLogger(module)
if err != nil {
panic("logger: " + module + ": " + err.Error())
}
return logger
}
// Reset restores the internal state of the logging library.
func Reset() {
// TODO make a global Init() method to be less magic? or make it such that
// if there's no backends at all configured, we could use some tricks to
// automatically setup backends based if we have a TTY or not.
sequenceNo = 0
b := SetBackend(NewLogBackend(os.Stderr, "", log.LstdFlags))
b.SetLevel(DEBUG, "")
SetFormatter(DefaultFormatter)
timeNow = time.Now
}
// IsEnabledFor returns true if the logger is enabled for the given level.
func (l *Logger) IsEnabledFor(level Level) bool {
return defaultBackend.IsEnabledFor(level, l.Module)
}
func (l *Logger) log(lvl Level, format string, args ...interface{}) {
if !l.IsEnabledFor(lvl) {
return
}
// Create the logging record and pass it in to the backend
record := &Record{
Id: atomic.AddUint64(&sequenceNo, 1),
Time: timeNow(),
Module: l.Module,
Level: lvl,
fmt: format,
args: args,
}
// TODO use channels to fan out the records to all backends?
// TODO in case of errors, do something (tricky)
// calldepth=2 brings the stack up to the caller of the level
// methods, Info(), Fatal(), etc.
// ExtraCallDepth allows this to be extended further up the stack in case we
// are wrapping these methods, eg. to expose them package level
if l.haveBackend {
l.backend.Log(lvl, 2+l.ExtraCalldepth, record)
return
}
defaultBackend.Log(lvl, 2+l.ExtraCalldepth, record)
}
// Fatal is equivalent to l.Critical(fmt.Sprint()) followed by a call to os.Exit(1).
func (l *Logger) Fatal(args ...interface{}) {
s := fmt.Sprint(args...)
l.log(CRITICAL, "%s", s)
os.Exit(1)
}
// Fatalf is equivalent to l.Critical followed by a call to os.Exit(1).
func (l *Logger) Fatalf(format string, args ...interface{}) {
l.log(CRITICAL, format, args...)
os.Exit(1)
}
// Panic is equivalent to l.Critical(fmt.Sprint()) followed by a call to panic().
func (l *Logger) Panic(args ...interface{}) {
s := fmt.Sprint(args...)
l.log(CRITICAL, "%s", s)
panic(s)
}
// Panicf is equivalent to l.Critical followed by a call to panic().
func (l *Logger) Panicf(format string, args ...interface{}) {
s := fmt.Sprintf(format, args...)
l.log(CRITICAL, "%s", s)
panic(s)
}
// Critical logs a message using CRITICAL as log level.
func (l *Logger) Critical(format string, args ...interface{}) {
l.log(CRITICAL, format, args...)
}
// Error logs a message using ERROR as log level.
func (l *Logger) Error(format string, args ...interface{}) {
l.log(ERROR, format, args...)
}
// Errorf logs a message using ERROR as log level.
func (l *Logger) Errorf(format string, args ...interface{}) {
l.log(ERROR, format, args...)
}
// Warning logs a message using WARNING as log level.
func (l *Logger) Warning(format string, args ...interface{}) {
l.log(WARNING, format, args...)
}
// Warningf logs a message using WARNING as log level.
func (l *Logger) Warningf(format string, args ...interface{}) {
l.log(WARNING, format, args...)
}
// Notice logs a message using NOTICE as log level.
func (l *Logger) Notice(format string, args ...interface{}) {
l.log(NOTICE, format, args...)
}
// Noticef logs a message using NOTICE as log level.
func (l *Logger) Noticef(format string, args ...interface{}) {
l.log(NOTICE, format, args...)
}
// Info logs a message using INFO as log level.
func (l *Logger) Info(format string, args ...interface{}) {
l.log(INFO, format, args...)
}
// Infof logs a message using INFO as log level.
func (l *Logger) Infof(format string, args ...interface{}) {
l.log(INFO, format, args...)
}
// Debug logs a message using DEBUG as log level.
func (l *Logger) Debug(format string, args ...interface{}) {
l.log(DEBUG, format, args...)
}
// Debugf logs a message using DEBUG as log level.
func (l *Logger) Debugf(format string, args ...interface{}) {
l.log(DEBUG, format, args...)
}
func init() {
Reset()
}

237
Godeps/_workspace/src/github.com/op/go-logging/memory.go generated vendored
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@ -0,0 +1,237 @@
// Copyright 2013, Örjan Persson. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !appengine
package logging
import (
"sync"
"sync/atomic"
"time"
"unsafe"
)
// TODO pick one of the memory backends and stick with it or share interface.
// InitForTesting is a convenient method when using logging in a test. Once
// called, the time will be frozen to January 1, 1970 UTC.
func InitForTesting(level Level) *MemoryBackend {
Reset()
memoryBackend := NewMemoryBackend(10240)
leveledBackend := AddModuleLevel(memoryBackend)
leveledBackend.SetLevel(level, "")
SetBackend(leveledBackend)
timeNow = func() time.Time {
return time.Unix(0, 0).UTC()
}
return memoryBackend
}
// Node is a record node pointing to an optional next node.
type node struct {
next *node
Record *Record
}
// Next returns the next record node. If there's no node available, it will
// return nil.
func (n *node) Next() *node {
return n.next
}
// MemoryBackend is a simple memory based logging backend that will not produce
// any output but merly keep records, up to the given size, in memory.
type MemoryBackend struct {
size int32
maxSize int32
head, tail unsafe.Pointer
}
// NewMemoryBackend creates a simple in-memory logging backend.
func NewMemoryBackend(size int) *MemoryBackend {
return &MemoryBackend{maxSize: int32(size)}
}
// Log implements the Log method required by Backend.
func (b *MemoryBackend) Log(level Level, calldepth int, rec *Record) error {
var size int32
n := &node{Record: rec}
np := unsafe.Pointer(n)
// Add the record to the tail. If there's no records available, tail and
// head will both be nil. When we successfully set the tail and the previous
// value was nil, it's safe to set the head to the current value too.
for {
tailp := b.tail
swapped := atomic.CompareAndSwapPointer(
&b.tail,
tailp,
np,
)
if swapped == true {
if tailp == nil {
b.head = np
} else {
(*node)(tailp).next = n
}
size = atomic.AddInt32(&b.size, 1)
break
}
}
// Since one record was added, we might have overflowed the list. Remove
// a record if that is the case. The size will fluctate a bit, but
// eventual consistent.
if b.maxSize > 0 && size > b.maxSize {
for {
headp := b.head
head := (*node)(b.head)
if head.next == nil {
break
}
swapped := atomic.CompareAndSwapPointer(
&b.head,
headp,
unsafe.Pointer(head.next),
)
if swapped == true {
atomic.AddInt32(&b.size, -1)
break
}
}
}
return nil
}
// Head returns the oldest record node kept in memory. It can be used to
// iterate over records, one by one, up to the last record.
//
// Note: new records can get added while iterating. Hence the number of records
// iterated over might be larger than the maximum size.
func (b *MemoryBackend) Head() *node {
return (*node)(b.head)
}
type event int
const (
eventFlush event = iota
eventStop
)
// ChannelMemoryBackend is very similar to the MemoryBackend, except that it
// internally utilizes a channel.
type ChannelMemoryBackend struct {
maxSize int
size int
incoming chan *Record
events chan event
mu sync.Mutex
running bool
flushWg sync.WaitGroup
stopWg sync.WaitGroup
head, tail *node
}
// NewChannelMemoryBackend creates a simple in-memory logging backend which
// utilizes a go channel for communication.
//
// Start will automatically be called by this function.
func NewChannelMemoryBackend(size int) *ChannelMemoryBackend {
backend := &ChannelMemoryBackend{
maxSize: size,
incoming: make(chan *Record, 1024),
events: make(chan event),
}
backend.Start()
return backend
}
// Start launches the internal goroutine which starts processing data from the
// input channel.
func (b *ChannelMemoryBackend) Start() {
b.mu.Lock()
defer b.mu.Unlock()
// Launch the goroutine unless it's already running.
if b.running != true {
b.running = true
b.stopWg.Add(1)
go b.process()
}
}
func (b *ChannelMemoryBackend) process() {
defer b.stopWg.Done()
for {
select {
case rec := <-b.incoming:
b.insertRecord(rec)
case e := <-b.events:
switch e {
case eventStop:
return
case eventFlush:
for len(b.incoming) > 0 {
b.insertRecord(<-b.incoming)
}
b.flushWg.Done()
}
}
}
}
func (b *ChannelMemoryBackend) insertRecord(rec *Record) {
prev := b.tail
b.tail = &node{Record: rec}
if prev == nil {
b.head = b.tail
} else {
prev.next = b.tail
}
if b.maxSize > 0 && b.size >= b.maxSize {
b.head = b.head.next
} else {
b.size++
}
}
// Flush waits until all records in the buffered channel have been processed.
func (b *ChannelMemoryBackend) Flush() {
b.flushWg.Add(1)
b.events <- eventFlush
b.flushWg.Wait()
}
// Stop signals the internal goroutine to exit and waits until it have.
func (b *ChannelMemoryBackend) Stop() {
b.mu.Lock()
if b.running == true {
b.running = false
b.events <- eventStop
}
b.mu.Unlock()
b.stopWg.Wait()
}
// Log implements the Log method required by Backend.
func (b *ChannelMemoryBackend) Log(level Level, calldepth int, rec *Record) error {
b.incoming <- rec
return nil
}
// Head returns the oldest record node kept in memory. It can be used to
// iterate over records, one by one, up to the last record.
//
// Note: new records can get added while iterating. Hence the number of records
// iterated over might be larger than the maximum size.
func (b *ChannelMemoryBackend) Head() *node {
return b.head
}

65
Godeps/_workspace/src/github.com/op/go-logging/multi.go generated vendored
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@ -0,0 +1,65 @@
// Copyright 2013, Örjan Persson. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package logging
// TODO remove Level stuff from the multi logger. Do one thing.
// multiLogger is a log multiplexer which can be used to utilize multiple log
// backends at once.
type multiLogger struct {
backends []LeveledBackend
}
// MultiLogger creates a logger which contain multiple loggers.
func MultiLogger(backends ...Backend) LeveledBackend {
var leveledBackends []LeveledBackend
for _, backend := range backends {
leveledBackends = append(leveledBackends, AddModuleLevel(backend))
}
return &multiLogger{leveledBackends}
}
// Log passes the log record to all backends.
func (b *multiLogger) Log(level Level, calldepth int, rec *Record) (err error) {
for _, backend := range b.backends {
if backend.IsEnabledFor(level, rec.Module) {
// Shallow copy of the record for the formatted cache on Record and get the
// record formatter from the backend.
r2 := *rec
if e := backend.Log(level, calldepth+1, &r2); e != nil {
err = e
}
}
}
return
}
// GetLevel returns the highest level enabled by all backends.
func (b *multiLogger) GetLevel(module string) Level {
var level Level
for _, backend := range b.backends {
if backendLevel := backend.GetLevel(module); backendLevel > level {
level = backendLevel
}
}
return level
}
// SetLevel propagates the same level to all backends.
func (b *multiLogger) SetLevel(level Level, module string) {
for _, backend := range b.backends {
backend.SetLevel(level, module)
}
}
// IsEnabledFor returns true if any of the backends are enabled for it.
func (b *multiLogger) IsEnabledFor(level Level, module string) bool {
for _, backend := range b.backends {
if backend.IsEnabledFor(level, module) {
return true
}
}
return false
}

53
Godeps/_workspace/src/github.com/op/go-logging/syslog.go generated vendored
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@ -0,0 +1,53 @@
// Copyright 2013, Örjan Persson. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//+build !windows,!plan9
package logging
import "log/syslog"
// SyslogBackend is a simple logger to syslog backend. It automatically maps
// the internal log levels to appropriate syslog log levels.
type SyslogBackend struct {
Writer *syslog.Writer
}
// NewSyslogBackend connects to the syslog daemon using UNIX sockets with the
// given prefix. If prefix is not given, the prefix will be derived from the
// launched command.
func NewSyslogBackend(prefix string) (b *SyslogBackend, err error) {
var w *syslog.Writer
w, err = syslog.New(syslog.LOG_CRIT, prefix)
return &SyslogBackend{w}, err
}
// NewSyslogBackendPriority is the same as NewSyslogBackend, but with custom
// syslog priority, like syslog.LOG_LOCAL3|syslog.LOG_DEBUG etc.
func NewSyslogBackendPriority(prefix string, priority syslog.Priority) (b *SyslogBackend, err error) {
var w *syslog.Writer
w, err = syslog.New(priority, prefix)
return &SyslogBackend{w}, err
}
// Log implements the Backend interface.
func (b *SyslogBackend) Log(level Level, calldepth int, rec *Record) error {
line := rec.Formatted(calldepth + 1)
switch level {
case CRITICAL:
return b.Writer.Crit(line)
case ERROR:
return b.Writer.Err(line)
case WARNING:
return b.Writer.Warning(line)
case NOTICE:
return b.Writer.Notice(line)
case INFO:
return b.Writer.Info(line)
case DEBUG:
return b.Writer.Debug(line)
default:
}
panic("unhandled log level")
}

28
Godeps/_workspace/src/github.com/op/go-logging/syslog_fallback.go generated vendored
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@ -0,0 +1,28 @@
// Copyright 2013, Örjan Persson. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//+build windows plan9
package logging
import (
"fmt"
)
type Priority int
type SyslogBackend struct {
}
func NewSyslogBackend(prefix string) (b *SyslogBackend, err error) {
return nil, fmt.Errorf("Platform does not support syslog")
}
func NewSyslogBackendPriority(prefix string, priority Priority) (b *SyslogBackend, err error) {
return nil, fmt.Errorf("Platform does not support syslog")
}
func (b *SyslogBackend) Log(level Level, calldepth int, rec *Record) error {
return fmt.Errorf("Platform does not support syslog")
}

4
dbus.go
Unescape View File

@ -5,8 +5,8 @@ import (
"fmt"
"strings"
"github.com/godbus/dbus"
"github.com/godbus/dbus/introspect"
"github.com/subgraph/fw-daemon/Godeps/_workspace/src/github.com/godbus/dbus"
"github.com/subgraph/fw-daemon/Godeps/_workspace/src/github.com/godbus/dbus/introspect"
)
const introspectXml = `

4
main.go
Unescape View File

@ -6,7 +6,7 @@ import (
"os/signal"
"time"
"github.com/op/go-logging"
"github.com/subgraph/fw-daemon/Godeps/_workspace/src/github.com/op/go-logging"
"github.com/subgraph/fw-daemon/nfqueue"
"sync"
"syscall"
@ -31,7 +31,7 @@ func isTerminal(fd int) bool {
func init() {
format := logFormat
if(isTerminal(int(os.Stderr.Fd()))) {
if isTerminal(int(os.Stderr.Fd())) {
format = ttyFormat
}
backend := logging.NewLogBackend(os.Stderr, "", 0)

2
prompt.go
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@ -2,7 +2,7 @@ package main
import (
"fmt"
"github.com/godbus/dbus"
"github.com/subgraph/fw-daemon/Godeps/_workspace/src/github.com/godbus/dbus"
"os/user"
"strconv"
"sync"

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