func fetchPubkey() (*rsa.PublicKey, error) {
resp, err := http.Get("https://s3o.ft.com/publickey")
if err != nil || resp.StatusCode != http.StatusOK {
return nil, errors.New("failed to read s3o public key")
}
defer func() {
_, _ = io.Copy(ioutil.Discard, resp.Body)
_ = resp.Body.Close()
}()
var buf bytes.Buffer
if _, err := io.Copy(&buf, resp.Body); err != nil {
return nil, errors.New("failed to read s3o public key")
}
dec := make([]byte, 8192) // should be enough for a while.
i, err := base64.StdEncoding.Decode(dec, buf.Bytes())
if err != nil {
return nil, errors.New("failed to base64 decode s3o public key")
}
pub, err := x509.ParsePKIXPublicKey(dec[0:i])
if err != nil {
return nil, errors.New("failed to parse s3o public key")
}
return pub.(*rsa.PublicKey), nil
}
func handleClient(p1, p2 net.Conn) {
log.Println("stream opened")
defer log.Println("stream closed")
defer p1.Close()
defer p2.Close()
// start tunnel
p1die := make(chan struct{})
go func() {
io.Copy(p1, p2)
close(p1die)
}()
p2die := make(chan struct{})
go func() {
io.Copy(p2, p1)
close(p2die)
}()
// wait for tunnel termination
select {
case <-p1die:
case <-p2die:
}
}
func (tp *TCPProxy) serve(in net.Conn) {
var (
err error
out net.Conn
)
for i := 0; i < tp.numRemotes(); i++ {
remote := tp.pick()
if !remote.isActive() {
continue
}
// TODO: add timeout
out, err = net.Dial("tcp", remote.addr)
if err == nil {
break
}
remote.inactivate()
plog.Warningf("deactivated endpoint [%s] due to %v for %v", remote.addr, err, tp.MonitorInterval)
}
if out == nil {
in.Close()
return
}
go func() {
io.Copy(in, out)
in.Close()
out.Close()
}()
io.Copy(out, in)
out.Close()
in.Close()
}
func (container *Container) startPty() error {
ptyMaster, ptySlave, err := pty.Open()
if err != nil {
return err
}
container.ptyMaster = ptyMaster
container.cmd.Stdout = ptySlave
container.cmd.Stderr = ptySlave
// Copy the PTYs to our broadcasters
go func() {
defer container.stdout.CloseWriters()
utils.Debugf("[startPty] Begin of stdout pipe")
io.Copy(container.stdout, ptyMaster)
utils.Debugf("[startPty] End of stdout pipe")
}()
// stdin
if container.Config.OpenStdin {
container.cmd.Stdin = ptySlave
container.cmd.SysProcAttr = &syscall.SysProcAttr{Setctty: true, Setsid: true}
go func() {
defer container.stdin.Close()
utils.Debugf("[startPty] Begin of stdin pipe")
io.Copy(ptyMaster, container.stdin)
utils.Debugf("[startPty] End of stdin pipe")
}()
}
if err := container.cmd.Start(); err != nil {
return err
}
ptySlave.Close()
return nil
}
func main() {
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
fmt.Println(r.URL.Path)
p := r.URL.Path[1:]
if p == "" {
p = "index.html"
}
fi, err := os.Open(p)
if err == nil {
defer fi.Close()
io.Copy(w, fi)
return
}
resp, err := http.Get("http://localhost:8080" + r.URL.Path)
if err != nil {
http.Error(w, err.Error(), 404)
return
}
defer resp.Body.Close()
io.Copy(w, resp.Body)
})
panic(http.ListenAndServe(":9117", nil))
}
// pipeStream relays over a stream to a remote peer. It's like `cat`
func (rs *RelayService) pipeStream(src, dst peer.ID, s inet.Stream) error {
s2, err := rs.openStreamToPeer(dst)
if err != nil {
return fmt.Errorf("failed to open stream to peer: %s -- %s", dst, err)
}
if err := WriteHeader(s2, src, dst); err != nil {
return err
}
// connect the series of tubes.
done := make(chan retio, 2)
go func() {
n, err := io.Copy(s2, s)
done <- retio{n, err}
}()
go func() {
n, err := io.Copy(s, s2)
done <- retio{n, err}
}()
r1 := <-done
r2 := <-done
log.Infof("%s relayed %d/%d bytes between %s and %s", rs.host.ID(), r1.n, r2.n, src, dst)
if r1.err != nil {
return r1.err
}
return r2.err
}
func (t *dockerTtyTerm) Attach(cmd *exec.Cmd) error {
go io.Copy(t.pipes.Stdout, t.MasterPty)
if t.pipes.Stdin != nil {
go io.Copy(t.MasterPty, t.pipes.Stdin)
}
return nil
}
func (f *Fuzzer) run() error {
f.cmd = exec.Command(f.path(),
"-o", "output",
"-i", "input",
"-S", f.Id,
"./target",
)
stdout, err := f.cmd.StdoutPipe()
if err != nil {
log.Fatalf("Couldn't get stdout handle", err)
}
stderr, err := f.cmd.StderrPipe()
if err != nil {
log.Fatalf("Couldn't get stderr handle", err)
}
if err := f.cmd.Start(); err != nil {
log.Fatalf("Couldn't start fuzzer", err)
}
go func() {
io.Copy(os.Stdout, stdout)
}()
go func() {
io.Copy(os.Stderr, stderr)
}()
log.Printf("Waiting for fuzzer to exit")
f.started = true
return f.cmd.Wait()
}
func runBin(bin string, args []string) error {
command = exec.Command(bin, args...)
stdout, err := command.StdoutPipe()
if err != nil {
return err
}
stderr, err := command.StderrPipe()
if err != nil {
return err
}
err = command.Start()
if err != nil {
return err
}
startTime = time.Now()
go io.Copy(writer, stdout)
go io.Copy(writer, stderr)
go func() {
done <- command.Wait()
}()
return nil
}
func (t *TtyConsole) AttachPipes(command *exec.Cmd, pipes *execdriver.Pipes) error {
command.Stdout = t.SlavePty
command.Stderr = t.SlavePty
go func() {
if wb, ok := pipes.Stdout.(interface {
CloseWriters() error
}); ok {
defer wb.CloseWriters()
}
io.Copy(pipes.Stdout, t.MasterPty)
}()
if pipes.Stdin != nil {
command.Stdin = t.SlavePty
command.SysProcAttr.Setctty = true
go func() {
io.Copy(t.MasterPty, pipes.Stdin)
pipes.Stdin.Close()
}()
}
return nil
}
func (ln wslistener) ServeHTTP(w http.ResponseWriter, r *http.Request) {
websocket.Handler(func(wcon *websocket.Conn) {
// It appears we mustn't pass wcon to external users as is.
// We'll pass a pipe instead, because the only way to know if a wcon
// was closed remotely is to read from it until EOF.
ch := make(chan struct{})
p1, p2 := net.Pipe()
go func() {
io.Copy(wcon, p1)
wcon.Close()
}()
go func() {
io.Copy(p1, wcon)
p1.Close()
close(ch)
}()
select {
case ln.acceptCh <- p2:
case <-ln.closeCh:
}
// As soon as we return from this function, websocket library will
// close wcon. So we'll wait until p2 or wcon is closed.
<-ch
}).ServeHTTP(w, r)
}
// Receive receives single frame from ws, unmarshaled by cd.Unmarshal and stores in v.
func (cd Codec) Receive(ws *Conn, v interface{}) (err error) {
ws.rio.Lock()
defer ws.rio.Unlock()
if ws.frameReader != nil {
_, err = io.Copy(ioutil.Discard, ws.frameReader)
if err != nil {
return err
}
ws.frameReader = nil
}
var data bytes.Buffer
again:
frame, err := ws.frameReaderFactory.NewFrameReader()
if err != nil {
return err
}
frame, err = ws.frameHandler.HandleFrame(frame)
if err != nil {
return err
}
if frame == nil {
goto again
}
payloadType := frame.PayloadType()
if _, err = io.Copy(&data, frame); err != nil {
return err
}
if !frame.IsFin() {
goto again
}
return cd.Unmarshal(data.Bytes(), payloadType, v)
}
func serve(listener net.Listener) {
certificate, err := tls.LoadX509KeyPair("server.crt", "server.key")
if err != nil {
panic(err)
}
for {
c, err := listener.Accept()
if err != nil {
log.Printf("accept: %s", err)
}
tlsConn := tls.Server(c, &tls.Config{
Certificates: []tls.Certificate{certificate},
})
if err := tlsConn.Handshake(); err != nil {
log.Printf("tls: %s", err)
}
go func() {
io.Copy(os.Stdout, tlsConn)
c.Close()
}()
go func() {
io.Copy(tlsConn, os.Stdin)
c.Close()
}()
}
}
func (d *simpleDatabase) ImportFromReader(r io.Reader) network.StaticId {
f, err := ioutil.TempFile(d.dirname, "import-")
if err != nil {
panic(err)
}
len, err2 := io.Copy(f, r)
if err2 != nil {
panic(err2)
}
hasher := hashtree.NewFile()
hashFile := d.innerHashListenerFile(hasher, hashtree.Bytes(len))
f.Seek(0, os.SEEK_SET)
io.Copy(hasher, f)
id := network.StaticId{
Hash: hasher.Sum(nil),
Length: &len,
}
f.Close()
hashFile.Close()
moveOrRemoveFile(f.Name(), d.fileNameForId(id))
moveOrRemoveFile(hashFile.Name(), d.hashFileNameForId(id))
return id
}
func compile(w *World) *bytes.Buffer {
ioutil.WriteFile(TEMPPATH+".go", []byte(w.source()), 0644)
err := new(bytes.Buffer)
re, e, _ := os.Pipe()
os.ForkExec(
bin+"/"+arch+"g",
[]string{bin + "/" + arch + "g", "-o", TEMPPATH + ".6", TEMPPATH + ".go"},
os.Environ(),
"",
[]*os.File{nil, e, nil})
e.Close()
io.Copy(err, re)
if err.Len() > 0 {
return err
}
re, e, _ = os.Pipe()
os.ForkExec(
bin+"/"+arch+"l",
[]string{bin + "/" + arch + "l", "-o", TEMPPATH + "", TEMPPATH + ".6"},
os.Environ(),
"",
[]*os.File{nil, e, nil})
e.Close()
io.Copy(err, re)
return err
}
func run() (*bytes.Buffer, *bytes.Buffer) {
out := new(bytes.Buffer)
err := new(bytes.Buffer)
re, e, _ := os.Pipe()
ro, o, _ := os.Pipe()
os.ForkExec(
TEMPPATH,
[]string{TEMPPATH},
os.Environ(),
"",
[]*os.File{nil, o, e})
e.Close()
io.Copy(err, re)
if err.Len() > 0 {
return nil, err
}
o.Close()
io.Copy(out, ro)
return out, err
}
func BenchmarkKiSS(b *testing.B) {
go run_single_kiss_echo("127.0.0.1:1234")
time.Sleep(time.Second)
lololol, err := net.Dial("tcp", "127.0.0.1:1234")
if err != nil {
panic("wtf")
}
defer lololol.Close()
xaxa, err := Obfs3fHandshake(lololol, false)
if err != nil {
panic(err.Error())
}
xaxa, err = TransportHandshake(dh_gen_key(2048), xaxa,
func([]byte) bool { return true })
xaxa, err = TransportHandshake(dh_gen_key(2048), xaxa,
func([]byte) bool { return true })
xaxa, err = TransportHandshake(dh_gen_key(2048), xaxa,
func([]byte) bool { return true })
xaxa, err = TransportHandshake(dh_gen_key(2048), xaxa,
func([]byte) bool { return true })
if err != nil {
panic(err.Error())
}
defer xaxa.Close()
fmt.Printf("xaxa!\n")
listener, _ := net.Listen("tcp", "127.0.0.1:5555")
client, _ := listener.Accept()
defer client.Close()
go io.Copy(client, xaxa)
io.Copy(xaxa, client)
}
func TestAsyncWriteTo(t *testing.T) {
buf := ioutil.NopCloser(bytes.NewBufferString("Testbuffer"))
ar, err := newAsyncReader(buf, 4, 10000)
if err != nil {
t.Fatal("error when creating:", err)
}
var dst = &bytes.Buffer{}
n, err := io.Copy(dst, ar)
if err != io.EOF {
t.Fatal("error when reading:", err)
}
if n != 10 {
t.Fatal("unexpected length, expected 10, got ", n)
}
// Should still return EOF
n, err = io.Copy(dst, ar)
if err != io.EOF {
t.Fatal("expected io.EOF, got", err)
}
if n != 0 {
t.Fatal("unexpected length, expected 0, got ", n)
}
err = ar.Close()
if err != nil {
t.Fatal("error when closing:", err)
}
}
func netcat(c net.Conn) {
log("piping stdio to connection")
done := make(chan struct{})
go func() {
n, _ := io.Copy(c, os.Stdin)
log("sent %d bytes", n)
done <- struct{}{}
}()
go func() {
n, _ := io.Copy(os.Stdout, c)
log("received %d bytes", n)
done <- struct{}{}
}()
// wait until we exit.
sigc := make(chan os.Signal, 1)
signal.Notify(sigc, syscall.SIGHUP, syscall.SIGINT,
syscall.SIGTERM, syscall.SIGQUIT)
select {
case <-done:
case <-sigc:
}
}
// Generate a human readable sha1 hash of the given file path
func hashFile(path string) (hashes FileInfo, err error) {
f, err := os.Open(path)
if err != nil {
return
}
defer f.Close()
reader := bufio.NewReader(f)
if GetConfig().Hashes.SHA1 {
sha1Hash := sha1.New()
_, err = io.Copy(sha1Hash, reader)
if err == nil {
hashes.Sha1 = hex.EncodeToString(sha1Hash.Sum(nil))
}
}
if GetConfig().Hashes.SHA256 {
sha256Hash := sha256.New()
_, err = io.Copy(sha256Hash, reader)
if err == nil {
hashes.Sha256 = hex.EncodeToString(sha256Hash.Sum(nil))
}
}
if GetConfig().Hashes.MD5 {
md5Hash := md5.New()
_, err = io.Copy(md5Hash, reader)
if err == nil {
hashes.Md5 = hex.EncodeToString(md5Hash.Sum(nil))
}
}
return
}
func (container *Container) setupPty() error {
ptyMaster, ptySlave, err := pty.Open()
if err != nil {
return err
}
container.ptyMaster = ptyMaster
container.command.Stdout = ptySlave
container.command.Stderr = ptySlave
// Copy the PTYs to our broadcasters
go func() {
defer container.stdout.CloseWriters()
utils.Debugf("startPty: begin of stdout pipe")
io.Copy(container.stdout, ptyMaster)
utils.Debugf("startPty: end of stdout pipe")
}()
// stdin
if container.Config.OpenStdin {
container.command.Stdin = ptySlave
container.command.SysProcAttr.Setctty = true
go func() {
defer container.stdin.Close()
utils.Debugf("startPty: begin of stdin pipe")
io.Copy(ptyMaster, container.stdin)
utils.Debugf("startPty: end of stdin pipe")
}()
}
return nil
}
func runDevelopmentServer(path string) {
if len(path) < 1 {
printHelpCommand("A GAEA project directory must be specified:")
return
}
verified := verifyAppServerExists()
if !verified {
return
}
fmt.Fprintln(os.Stdout, "Running Dev App Server through GAEA...")
cmd := exec.Command("dev_appserver.py", path)
stdout, err := cmd.StdoutPipe()
if err != nil {
log.Fatal(err)
}
stderr, err := cmd.StderrPipe()
if err != nil {
log.Fatal(err)
}
if err := cmd.Start(); err != nil {
log.Fatal(err)
}
go io.Copy(os.Stdout, stdout)
go io.Copy(os.Stderr, stderr)
if err := cmd.Wait(); err != nil {
log.Fatal(err)
}
}
func main() {
if len(os.Args) < 2 {
fmt.Printf("Please specify a host.\n")
os.Exit(1)
}
if len(os.Args) > 3 {
fmt.Printf("Too many arguments.\n")
os.Exit(1)
}
host := os.Args[1]
port := "443"
if len(os.Args) == 3 {
port = os.Args[2]
}
config := &tls.Config{
InsecureSkipVerify: true,
}
conn, err := tls.Dial("tcp", host+":"+port, config)
if err != nil {
fmt.Printf("Error dialing host: %v\n", err)
os.Exit(1)
}
go io.Copy(conn, os.Stdin)
io.Copy(os.Stdout, conn)
}
func (dict *Dict) Fprint(w io.Writer) error {
coeffLen := dict.longestCoeff("%+-.4g")
coeff := "%+-" + fmt.Sprintf("%d", coeffLen) + ".4g"
indexLen := dict.longestIndex("%d")
index := "%" + fmt.Sprintf("%d", indexLen) + "d"
var b bytes.Buffer
for i := range dict.Basic {
fmt.Fprintf(&b, "x"+index+" =", dict.Basic[i])
fmt.Fprintf(&b, " "+coeff, dict.B[i])
for j := range dict.NonBasic {
fmt.Fprintf(&b, " "+coeff+" x"+index, dict.A[i][j], dict.NonBasic[j])
}
b.WriteString("\n")
if _, err := io.Copy(w, &b); err != nil {
return err
}
}
spacer := strings.Repeat(" ", indexLen)
fmt.Fprint(&b, "z"+spacer+" =")
fmt.Fprintf(&b, " "+coeff, dict.D)
for j := range dict.NonBasic {
fmt.Fprintf(&b, " "+coeff+" x"+index, dict.C[j], dict.NonBasic[j])
}
b.WriteString("\n")
if _, err := io.Copy(w, &b); err != nil {
return err
}
return nil
}
// RunCommandWithStdoutStderr execs a command and returns its output.
func RunCommandWithStdoutStderr(cmd *exec.Cmd) (bytes.Buffer, bytes.Buffer, error) {
var stdout, stderr bytes.Buffer
stderrPipe, err := cmd.StderrPipe()
stdoutPipe, err := cmd.StdoutPipe()
cmd.Env = os.Environ()
if err != nil {
fmt.Println("error at io pipes")
}
err = cmd.Start()
if err != nil {
fmt.Println("error at command start")
}
go func() {
io.Copy(&stdout, stdoutPipe)
fmt.Println(stdout.String())
}()
go func() {
io.Copy(&stderr, stderrPipe)
fmt.Println(stderr.String())
}()
time.Sleep(2000 * time.Millisecond)
err = cmd.Wait()
if err != nil {
fmt.Println("error at command wait")
}
return stdout, stderr, err
}
func tcpShim(inbound, outbound *net.TCPConn, connEvent *events.Connection, eh events.Handler) error {
eh.Connection(connEvent)
ch := make(chan error, 1)
go func() {
var err error
defer func() { ch <- err }()
_, err = io.Copy(inbound, outbound)
outbound.CloseRead()
inbound.CloseWrite()
}()
_, err1 := io.Copy(outbound, inbound)
inbound.CloseRead()
outbound.CloseWrite()
err2 := <-ch
inbound.Close()
outbound.Close()
if err1 != nil {
return err1
} else {
return err2
}
}
// Serve execute binary with configured options
func (r *WbsRunner) Serve() error {
evaledCommand, err := shellParser.Parse(r.StartCommand)
evaledOptions, err := shellParser.Parse(strings.Join(r.StartOptions, " "))
if err != nil {
return err
}
runnerLog("starting server: %s %s", evaledCommand, evaledOptions)
cmd := exec.Command(evaledCommand[0], evaledOptions...)
stderr, err := cmd.StderrPipe()
if err != nil {
runnerLog(err.Error())
return err
}
stdout, err := cmd.StdoutPipe()
if err != nil {
runnerLog(err.Error())
return err
}
rl := runnerLogWriter{}
go io.Copy(rl, stderr)
go io.Copy(rl, stdout)
err = cmd.Start()
if err != nil {
runnerLog(err.Error())
return err
}
r.Pid = cmd.Process.Pid
runnerLog("server started: PID %d", r.Pid)
return nil
}
func copyLoop(a net.Conn, b net.Conn) error {
// Note: b is always the pt connection. a is the SOCKS/ORPort connection.
errChan := make(chan error, 2)
var wg sync.WaitGroup
wg.Add(2)
go func() {
defer wg.Done()
defer b.Close()
defer a.Close()
_, err := io.Copy(b, a)
errChan <- err
}()
go func() {
defer wg.Done()
defer a.Close()
defer b.Close()
_, err := io.Copy(a, b)
errChan <- err
}()
// Wait for both upstream and downstream to close. Since one side
// terminating closes the other, the second error in the channel will be
// something like EINVAL (though io.Copy() will swallow EOF), so only the
// first error is returned.
wg.Wait()
if len(errChan) > 0 {
return <-errChan
}
return nil
}
func (srv *Server) CmdLogs(stdin io.ReadCloser, stdout io.Writer, args ...string) error {
cmd := rcli.Subcmd(stdout, "logs", "CONTAINER", "Fetch the logs of a container")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() != 1 {
cmd.Usage()
return nil
}
name := cmd.Arg(0)
if container := srv.runtime.Get(name); container != nil {
logStdout, err := container.ReadLog("stdout")
if err != nil {
return err
}
logStderr, err := container.ReadLog("stderr")
if err != nil {
return err
}
// FIXME: Interpolate stdout and stderr instead of concatenating them
// FIXME: Differentiate stdout and stderr in the remote protocol
if _, err := io.Copy(stdout, logStdout); err != nil {
return err
}
if _, err := io.Copy(stdout, logStderr); err != nil {
return err
}
return nil
}
return fmt.Errorf("No such container: %s", cmd.Arg(0))
}
func pipe(ch ssh.Channel, client *ssh.Client, session *ssh.Session, command string) (int, error) {
targetStderr, err := session.StderrPipe()
if err != nil {
return -1, errors.New("fail to pipe stderr: " + err.Error())
}
targetStdout, err := session.StdoutPipe()
if err != nil {
return -1, errors.New("fail to pipe stdout: " + err.Error())
}
targetStdin, err := session.StdinPipe()
if err != nil {
return -1, errors.New("fail to pipe stdin: " + err.Error())
}
go io.Copy(targetStdin, ch)
go io.Copy(ch.Stderr(), targetStderr)
go io.Copy(ch, targetStdout)
err = session.Start(command)
if err != nil {
ch.Write([]byte("Error when starting '" + command + "': " + err.Error()))
ch.Close()
}
err = session.Wait()
if err != nil {
if err, ok := err.(*ssh.ExitError); ok {
return err.ExitStatus(), nil
} else {
return -1, errors.New("failed to wait ssh command: " + err.Error())
}
}
return 0, nil
}