File socket-activation-01-vendor.patch of Package containerd

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File socket-activation-01-vendor.patch of Package containerd (Revision f441631403553068c1d852685eff8292)

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From ce2d08ecf5ffb5a128426c99a957e7319bdd130f Mon Sep 17 00:00:00 2001
From: Aleksa Sarai <asarai@suse.de>
Date: Thu, 31 Mar 2016 14:22:32 +1100
Subject: [PATCH 1/4] vendor: pull in requirements for
 docker/docker/docker/listeners

Since we're using the docker "library" for socket activation (and
dealing with sockets in general), we need to vendor the requirements for
the library.

Signed-off-by: Aleksa Sarai <asarai@suse.de>
---
 hack/vendor.sh                                     |   4 +
 .../coreos/go-systemd/activation/files.go          |  52 ++++
 .../coreos/go-systemd/activation/listeners.go      |  62 +++++
 .../coreos/go-systemd/activation/packetconns.go    |  37 +++
 .../docker/docker/docker/listeners/listeners.go    |  22 ++
 .../docker/docker/listeners/listeners_unix.go      | 119 +++++++++
 .../docker/docker/listeners/listeners_windows.go   |  58 +++++
 .../src/github.com/docker/go-connections/LICENSE   | 191 +++++++++++++++
 .../docker/go-connections/sockets/README.md        |   0
 .../docker/go-connections/sockets/inmem_socket.go  |  89 +++++++
 .../docker/go-connections/sockets/proxy.go         |  51 ++++
 .../docker/go-connections/sockets/sockets.go       |  42 ++++
 .../docker/go-connections/sockets/sockets_unix.go  |  15 ++
 .../go-connections/sockets/sockets_windows.go      |  13 +
 .../docker/go-connections/sockets/tcp_socket.go    |  22 ++
 .../docker/go-connections/sockets/unix_socket.go   |  80 ++++++
 vendor/src/github.com/docker/libnetwork/LICENSE    | 202 +++++++++++++++
 .../libnetwork/portallocator/portallocator.go      | 270 +++++++++++++++++++++
 vendor/src/golang.org/x/net/proxy/direct.go        |  18 ++
 vendor/src/golang.org/x/net/proxy/per_host.go      | 140 +++++++++++
 vendor/src/golang.org/x/net/proxy/proxy.go         |  94 +++++++
 vendor/src/golang.org/x/net/proxy/socks5.go        | 210 ++++++++++++++++
 22 files changed, 1791 insertions(+)
 create mode 100644 vendor/src/github.com/coreos/go-systemd/activation/files.go
 create mode 100644 vendor/src/github.com/coreos/go-systemd/activation/listeners.go
 create mode 100644 vendor/src/github.com/coreos/go-systemd/activation/packetconns.go
 create mode 100644 vendor/src/github.com/docker/docker/docker/listeners/listeners.go
 create mode 100644 vendor/src/github.com/docker/docker/docker/listeners/listeners_unix.go
 create mode 100644 vendor/src/github.com/docker/docker/docker/listeners/listeners_windows.go
 create mode 100644 vendor/src/github.com/docker/go-connections/LICENSE
 create mode 100644 vendor/src/github.com/docker/go-connections/sockets/README.md
 create mode 100644 vendor/src/github.com/docker/go-connections/sockets/inmem_socket.go
 create mode 100644 vendor/src/github.com/docker/go-connections/sockets/proxy.go
 create mode 100644 vendor/src/github.com/docker/go-connections/sockets/sockets.go
 create mode 100644 vendor/src/github.com/docker/go-connections/sockets/sockets_unix.go
 create mode 100644 vendor/src/github.com/docker/go-connections/sockets/sockets_windows.go
 create mode 100644 vendor/src/github.com/docker/go-connections/sockets/tcp_socket.go
 create mode 100644 vendor/src/github.com/docker/go-connections/sockets/unix_socket.go
 create mode 100644 vendor/src/github.com/docker/libnetwork/LICENSE
 create mode 100644 vendor/src/github.com/docker/libnetwork/portallocator/portallocator.go
 create mode 100644 vendor/src/golang.org/x/net/proxy/direct.go
 create mode 100644 vendor/src/golang.org/x/net/proxy/per_host.go
 create mode 100644 vendor/src/golang.org/x/net/proxy/proxy.go
 create mode 100644 vendor/src/golang.org/x/net/proxy/socks5.go

diff --git a/hack/vendor.sh b/hack/vendor.sh
index b9c5e33..eaf9a8c 100755
--- a/hack/vendor.sh
+++ b/hack/vendor.sh
@@ -28,4 +28,8 @@ clone git github.com/seccomp/libseccomp-golang 1b506fc7c24eec5a3693cdcbed40d9c22
 clone git github.com/vdemeester/shakers 24d7f1d6a71aa5d9cbe7390e4afb66b7eef9e1b3
 clone git github.com/go-check/check a625211d932a2a643d0d17352095f03fb7774663 https://github.com/cpuguy83/check.git
 
+# dependencies of docker/docker/docker/listeners
+clone git github.com/docker/libnetwork v0.7.0-rc.1
+clone git github.com/docker/go-connections v0.2.0
+
 clean
diff --git a/vendor/src/github.com/coreos/go-systemd/activation/files.go b/vendor/src/github.com/coreos/go-systemd/activation/files.go
new file mode 100644
index 0000000..c8e85fc
--- /dev/null
+++ b/vendor/src/github.com/coreos/go-systemd/activation/files.go
@@ -0,0 +1,52 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package activation implements primitives for systemd socket activation.
+package activation
+
+import (
+	"os"
+	"strconv"
+	"syscall"
+)
+
+// based on: https://gist.github.com/alberts/4640792
+const (
+	listenFdsStart = 3
+)
+
+func Files(unsetEnv bool) []*os.File {
+	if unsetEnv {
+		defer os.Unsetenv("LISTEN_PID")
+		defer os.Unsetenv("LISTEN_FDS")
+	}
+
+	pid, err := strconv.Atoi(os.Getenv("LISTEN_PID"))
+	if err != nil || pid != os.Getpid() {
+		return nil
+	}
+
+	nfds, err := strconv.Atoi(os.Getenv("LISTEN_FDS"))
+	if err != nil || nfds == 0 {
+		return nil
+	}
+
+	files := make([]*os.File, 0, nfds)
+	for fd := listenFdsStart; fd < listenFdsStart+nfds; fd++ {
+		syscall.CloseOnExec(fd)
+		files = append(files, os.NewFile(uintptr(fd), "LISTEN_FD_"+strconv.Itoa(fd)))
+	}
+
+	return files
+}
diff --git a/vendor/src/github.com/coreos/go-systemd/activation/listeners.go b/vendor/src/github.com/coreos/go-systemd/activation/listeners.go
new file mode 100644
index 0000000..df27c29
--- /dev/null
+++ b/vendor/src/github.com/coreos/go-systemd/activation/listeners.go
@@ -0,0 +1,62 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package activation
+
+import (
+	"crypto/tls"
+	"net"
+)
+
+// Listeners returns a slice containing a net.Listener for each matching socket type
+// passed to this process.
+//
+// The order of the file descriptors is preserved in the returned slice.
+// Nil values are used to fill any gaps. For example if systemd were to return file descriptors
+// corresponding with "udp, tcp, tcp", then the slice would contain {nil, net.Listener, net.Listener}
+func Listeners(unsetEnv bool) ([]net.Listener, error) {
+	files := Files(unsetEnv)
+	listeners := make([]net.Listener, len(files))
+
+	for i, f := range files {
+		if pc, err := net.FileListener(f); err == nil {
+			listeners[i] = pc
+		}
+	}
+	return listeners, nil
+}
+
+// TLSListeners returns a slice containing a net.listener for each matching TCP socket type
+// passed to this process.
+// It uses default Listeners func and forces TCP sockets handlers to use TLS based on tlsConfig.
+func TLSListeners(unsetEnv bool, tlsConfig *tls.Config) ([]net.Listener, error) {
+	listeners, err := Listeners(unsetEnv)
+
+	if listeners == nil || err != nil {
+		return nil, err
+	}
+
+	if tlsConfig != nil && err == nil {
+		tlsConfig.NextProtos = []string{"http/1.1"}
+
+		for i, l := range listeners {
+			// Activate TLS only for TCP sockets
+			if l.Addr().Network() == "tcp" {
+				listeners[i] = tls.NewListener(l, tlsConfig)
+			}
+		}
+	}
+
+	return listeners, err
+}
diff --git a/vendor/src/github.com/coreos/go-systemd/activation/packetconns.go b/vendor/src/github.com/coreos/go-systemd/activation/packetconns.go
new file mode 100644
index 0000000..48b2ca0
--- /dev/null
+++ b/vendor/src/github.com/coreos/go-systemd/activation/packetconns.go
@@ -0,0 +1,37 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package activation
+
+import (
+	"net"
+)
+
+// PacketConns returns a slice containing a net.PacketConn for each matching socket type
+// passed to this process.
+//
+// The order of the file descriptors is preserved in the returned slice.
+// Nil values are used to fill any gaps. For example if systemd were to return file descriptors
+// corresponding with "udp, tcp, udp", then the slice would contain {net.PacketConn, nil, net.PacketConn}
+func PacketConns(unsetEnv bool) ([]net.PacketConn, error) {
+	files := Files(unsetEnv)
+	conns := make([]net.PacketConn, len(files))
+
+	for i, f := range files {
+		if pc, err := net.FilePacketConn(f); err == nil {
+			conns[i] = pc
+		}
+	}
+	return conns, nil
+}
diff --git a/vendor/src/github.com/docker/docker/docker/listeners/listeners.go b/vendor/src/github.com/docker/docker/docker/listeners/listeners.go
new file mode 100644
index 0000000..8150ba0
--- /dev/null
+++ b/vendor/src/github.com/docker/docker/docker/listeners/listeners.go
@@ -0,0 +1,22 @@
+package listeners
+
+import (
+	"crypto/tls"
+	"net"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/docker/go-connections/sockets"
+)
+
+func initTCPSocket(addr string, tlsConfig *tls.Config) (l net.Listener, err error) {
+	if tlsConfig == nil || tlsConfig.ClientAuth != tls.RequireAndVerifyClientCert {
+		logrus.Warn("/!\\ DON'T BIND ON ANY IP ADDRESS WITHOUT setting -tlsverify IF YOU DON'T KNOW WHAT YOU'RE DOING /!\\")
+	}
+	if l, err = sockets.NewTCPSocket(addr, tlsConfig); err != nil {
+		return nil, err
+	}
+	if err := allocateDaemonPort(addr); err != nil {
+		return nil, err
+	}
+	return
+}
diff --git a/vendor/src/github.com/docker/docker/docker/listeners/listeners_unix.go b/vendor/src/github.com/docker/docker/docker/listeners/listeners_unix.go
new file mode 100644
index 0000000..732565a
--- /dev/null
+++ b/vendor/src/github.com/docker/docker/docker/listeners/listeners_unix.go
@@ -0,0 +1,119 @@
+// +build !windows
+
+package listeners
+
+import (
+	"crypto/tls"
+	"fmt"
+	"net"
+	"strconv"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/coreos/go-systemd/activation"
+	"github.com/docker/go-connections/sockets"
+	"github.com/docker/libnetwork/portallocator"
+)
+
+// Init creates new listeners for the server.
+func Init(proto, addr, socketGroup string, tlsConfig *tls.Config) (ls []net.Listener, err error) {
+	switch proto {
+	case "fd":
+		ls, err = listenFD(addr, tlsConfig)
+		if err != nil {
+			return nil, err
+		}
+	case "tcp":
+		l, err := initTCPSocket(addr, tlsConfig)
+		if err != nil {
+			return nil, err
+		}
+		ls = append(ls, l)
+	case "unix":
+		l, err := sockets.NewUnixSocket(addr, socketGroup)
+		if err != nil {
+			return nil, fmt.Errorf("can't create unix socket %s: %v", addr, err)
+		}
+		ls = append(ls, l)
+	default:
+		return nil, fmt.Errorf("Invalid protocol format: %q", proto)
+	}
+
+	return
+}
+
+// listenFD returns the specified socket activated files as a slice of
+// net.Listeners or all of the activated files if "*" is given.
+func listenFD(addr string, tlsConfig *tls.Config) ([]net.Listener, error) {
+	var (
+		err       error
+		listeners []net.Listener
+	)
+	// socket activation
+	if tlsConfig != nil {
+		listeners, err = activation.TLSListeners(false, tlsConfig)
+	} else {
+		listeners, err = activation.Listeners(false)
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	if len(listeners) == 0 {
+		return nil, fmt.Errorf("No sockets found. Make sure the docker daemon was started by systemd.")
+	}
+
+	// default to all fds just like unix:// and tcp://
+	if addr == "" || addr == "*" {
+		return listeners, nil
+	}
+
+	fdNum, err := strconv.Atoi(addr)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse systemd address, should be number: %v", err)
+	}
+	fdOffset := fdNum - 3
+	if len(listeners) < int(fdOffset)+1 {
+		return nil, fmt.Errorf("Too few socket activated files passed in")
+	}
+	if listeners[fdOffset] == nil {
+		return nil, fmt.Errorf("failed to listen on systemd activated file at fd %d", fdOffset+3)
+	}
+	for i, ls := range listeners {
+		if i == fdOffset || ls == nil {
+			continue
+		}
+		if err := ls.Close(); err != nil {
+			logrus.Errorf("Failed to close systemd activated file at fd %d: %v", fdOffset+3, err)
+		}
+	}
+	return []net.Listener{listeners[fdOffset]}, nil
+}
+
+// allocateDaemonPort ensures that there are no containers
+// that try to use any port allocated for the docker server.
+func allocateDaemonPort(addr string) error {
+	host, port, err := net.SplitHostPort(addr)
+	if err != nil {
+		return err
+	}
+
+	intPort, err := strconv.Atoi(port)
+	if err != nil {
+		return err
+	}
+
+	var hostIPs []net.IP
+	if parsedIP := net.ParseIP(host); parsedIP != nil {
+		hostIPs = append(hostIPs, parsedIP)
+	} else if hostIPs, err = net.LookupIP(host); err != nil {
+		return fmt.Errorf("failed to lookup %s address in host specification", host)
+	}
+
+	pa := portallocator.Get()
+	for _, hostIP := range hostIPs {
+		if _, err := pa.RequestPort(hostIP, "tcp", intPort); err != nil {
+			return fmt.Errorf("failed to allocate daemon listening port %d (err: %v)", intPort, err)
+		}
+	}
+	return nil
+}
diff --git a/vendor/src/github.com/docker/docker/docker/listeners/listeners_windows.go b/vendor/src/github.com/docker/docker/docker/listeners/listeners_windows.go
new file mode 100644
index 0000000..ae862fc
--- /dev/null
+++ b/vendor/src/github.com/docker/docker/docker/listeners/listeners_windows.go
@@ -0,0 +1,58 @@
+package listeners
+
+import (
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"net"
+	"strings"
+
+	"github.com/Microsoft/go-winio"
+)
+
+// Init creates new listeners for the server.
+func Init(proto, addr, socketGroup string, tlsConfig *tls.Config) (ls []net.Listener, err error) {
+	switch proto {
+	case "tcp":
+		l, err := initTCPSocket(addr, tlsConfig)
+		if err != nil {
+			return nil, err
+		}
+		ls = append(ls, l)
+
+	case "npipe":
+		// allow Administrators and SYSTEM, plus whatever additional users or groups were specified
+		sddl := "D:P(A;;GA;;;BA)(A;;GA;;;SY)"
+		if socketGroup != "" {
+			for _, g := range strings.Split(socketGroup, ",") {
+				sid, err := winio.LookupSidByName(g)
+				if err != nil {
+					return nil, err
+				}
+				sddl += fmt.Sprintf("(A;;GRGW;;;%s)", sid)
+			}
+		}
+		c := winio.PipeConfig{
+			SecurityDescriptor: sddl,
+			MessageMode:        true,  // Use message mode so that CloseWrite() is supported
+			InputBufferSize:    65536, // Use 64KB buffers to improve performance
+			OutputBufferSize:   65536,
+		}
+		l, err := winio.ListenPipe(addr, &c)
+		if err != nil {
+			return nil, err
+		}
+		ls = append(ls, l)
+
+	default:
+		return nil, errors.New("Invalid protocol format. Windows only supports tcp and npipe.")
+	}
+
+	return
+}
+
+// allocateDaemonPort ensures that there are no containers
+// that try to use any port allocated for the docker server.
+func allocateDaemonPort(addr string) error {
+	return nil
+}
diff --git a/vendor/src/github.com/docker/go-connections/LICENSE b/vendor/src/github.com/docker/go-connections/LICENSE
new file mode 100644
index 0000000..b55b37b
--- /dev/null
+++ b/vendor/src/github.com/docker/go-connections/LICENSE
@@ -0,0 +1,191 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        https://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
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+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2015 Docker, Inc.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       https://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/src/github.com/docker/go-connections/sockets/README.md b/vendor/src/github.com/docker/go-connections/sockets/README.md
new file mode 100644
index 0000000..e69de29
diff --git a/vendor/src/github.com/docker/go-connections/sockets/inmem_socket.go b/vendor/src/github.com/docker/go-connections/sockets/inmem_socket.go
new file mode 100644
index 0000000..3395e40
--- /dev/null
+++ b/vendor/src/github.com/docker/go-connections/sockets/inmem_socket.go
@@ -0,0 +1,89 @@
+package sockets
+
+import (
+	"errors"
+	"net"
+	"sync"
+)
+
+var errClosed = errors.New("use of closed network connection")
+
+// InmemSocket implements net.Listener using in-memory only connections.
+type InmemSocket struct {
+	chConn  chan net.Conn
+	chClose chan struct{}
+	addr    string
+	mu      sync.Mutex
+}
+
+// dummyAddr is used to satisfy net.Addr for the in-mem socket
+// it is just stored as a string and returns the string for all calls
+type dummyAddr string
+
+// NewInmemSocket creates an in-memory only net.Listener
+// The addr argument can be any string, but is used to satisfy the `Addr()` part
+// of the net.Listener interface
+func NewInmemSocket(addr string, bufSize int) *InmemSocket {
+	return &InmemSocket{
+		chConn:  make(chan net.Conn, bufSize),
+		chClose: make(chan struct{}),
+		addr:    addr,
+	}
+}
+
+// Addr returns the socket's addr string to satisfy net.Listener
+func (s *InmemSocket) Addr() net.Addr {
+	return dummyAddr(s.addr)
+}
+
+// Accept implements the Accept method in the Listener interface; it waits for the next call and returns a generic Conn.
+func (s *InmemSocket) Accept() (net.Conn, error) {
+	select {
+	case conn := <-s.chConn:
+		return conn, nil
+	case <-s.chClose:
+		return nil, errClosed
+	}
+}
+
+// Close closes the listener. It will be unavailable for use once closed.
+func (s *InmemSocket) Close() error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	select {
+	case <-s.chClose:
+	default:
+		close(s.chClose)
+	}
+	return nil
+}
+
+// Dial is used to establish a connection with the in-mem server
+func (s *InmemSocket) Dial(network, addr string) (net.Conn, error) {
+	srvConn, clientConn := net.Pipe()
+	select {
+	case s.chConn <- srvConn:
+	case <-s.chClose:
+		return nil, errClosed
+	}
+
+	return clientConn, nil
+}
+
+// Network returns the addr string, satisfies net.Addr
+func (a dummyAddr) Network() string {
+	return string(a)
+}
+
+// String returns the string form
+func (a dummyAddr) String() string {
+	return string(a)
+}
+
+// timeoutError is used when there is a timeout with a connection
+// this implements the net.Error interface
+type timeoutError struct{}
+
+func (e *timeoutError) Error() string   { return "i/o timeout" }
+func (e *timeoutError) Timeout() bool   { return true }
+func (e *timeoutError) Temporary() bool { return true }
diff --git a/vendor/src/github.com/docker/go-connections/sockets/proxy.go b/vendor/src/github.com/docker/go-connections/sockets/proxy.go
new file mode 100644
index 0000000..98e9a1d
--- /dev/null
+++ b/vendor/src/github.com/docker/go-connections/sockets/proxy.go
@@ -0,0 +1,51 @@
+package sockets
+
+import (
+	"net"
+	"net/url"
+	"os"
+	"strings"
+
+	"golang.org/x/net/proxy"
+)
+
+// GetProxyEnv allows access to the uppercase and the lowercase forms of
+// proxy-related variables.  See the Go specification for details on these
+// variables. https://golang.org/pkg/net/http/
+func GetProxyEnv(key string) string {
+	proxyValue := os.Getenv(strings.ToUpper(key))
+	if proxyValue == "" {
+		return os.Getenv(strings.ToLower(key))
+	}
+	return proxyValue
+}
+
+// DialerFromEnvironment takes in a "direct" *net.Dialer and returns a
+// proxy.Dialer which will route the connections through the proxy using the
+// given dialer.
+func DialerFromEnvironment(direct *net.Dialer) (proxy.Dialer, error) {
+	allProxy := GetProxyEnv("all_proxy")
+	if len(allProxy) == 0 {
+		return direct, nil
+	}
+
+	proxyURL, err := url.Parse(allProxy)
+	if err != nil {
+		return direct, err
+	}
+
+	proxyFromURL, err := proxy.FromURL(proxyURL, direct)
+	if err != nil {
+		return direct, err
+	}
+
+	noProxy := GetProxyEnv("no_proxy")
+	if len(noProxy) == 0 {
+		return proxyFromURL, nil
+	}
+
+	perHost := proxy.NewPerHost(proxyFromURL, direct)
+	perHost.AddFromString(noProxy)
+
+	return perHost, nil
+}
diff --git a/vendor/src/github.com/docker/go-connections/sockets/sockets.go b/vendor/src/github.com/docker/go-connections/sockets/sockets.go
new file mode 100644
index 0000000..1739cec
--- /dev/null
+++ b/vendor/src/github.com/docker/go-connections/sockets/sockets.go
@@ -0,0 +1,42 @@
+// Package sockets provides helper functions to create and configure Unix or TCP sockets.
+package sockets
+
+import (
+	"net"
+	"net/http"
+	"time"
+)
+
+// Why 32? See https://github.com/docker/docker/pull/8035.
+const defaultTimeout = 32 * time.Second
+
+// ConfigureTransport configures the specified Transport according to the
+// specified proto and addr.
+// If the proto is unix (using a unix socket to communicate) or npipe the
+// compression is disabled.
+func ConfigureTransport(tr *http.Transport, proto, addr string) error {
+	switch proto {
+	case "unix":
+		// No need for compression in local communications.
+		tr.DisableCompression = true
+		tr.Dial = func(_, _ string) (net.Conn, error) {
+			return net.DialTimeout(proto, addr, defaultTimeout)
+		}
+	case "npipe":
+		// No need for compression in local communications.
+		tr.DisableCompression = true
+		tr.Dial = func(_, _ string) (net.Conn, error) {
+			return DialPipe(addr, defaultTimeout)
+		}
+	default:
+		tr.Proxy = http.ProxyFromEnvironment
+		dialer, err := DialerFromEnvironment(&net.Dialer{
+			Timeout: defaultTimeout,
+		})
+		if err != nil {
+			return err
+		}
+		tr.Dial = dialer.Dial
+	}
+	return nil
+}
diff --git a/vendor/src/github.com/docker/go-connections/sockets/sockets_unix.go b/vendor/src/github.com/docker/go-connections/sockets/sockets_unix.go
new file mode 100644
index 0000000..b255ac9
--- /dev/null
+++ b/vendor/src/github.com/docker/go-connections/sockets/sockets_unix.go
@@ -0,0 +1,15 @@
+// +build !windows
+
+package sockets
+
+import (
+	"net"
+	"syscall"
+	"time"
+)
+
+// DialPipe connects to a Windows named pipe.
+// This is not supported on other OSes.
+func DialPipe(_ string, _ time.Duration) (net.Conn, error) {
+	return nil, syscall.EAFNOSUPPORT
+}
diff --git a/vendor/src/github.com/docker/go-connections/sockets/sockets_windows.go b/vendor/src/github.com/docker/go-connections/sockets/sockets_windows.go
new file mode 100644
index 0000000..1f3540b
--- /dev/null
+++ b/vendor/src/github.com/docker/go-connections/sockets/sockets_windows.go
@@ -0,0 +1,13 @@
+package sockets
+
+import (
+	"net"
+	"time"
+
+	"github.com/Microsoft/go-winio"
+)
+
+// DialPipe connects to a Windows named pipe.
+func DialPipe(addr string, timeout time.Duration) (net.Conn, error) {
+	return winio.DialPipe(addr, &timeout)
+}
diff --git a/vendor/src/github.com/docker/go-connections/sockets/tcp_socket.go b/vendor/src/github.com/docker/go-connections/sockets/tcp_socket.go
new file mode 100644
index 0000000..8a82727
--- /dev/null
+++ b/vendor/src/github.com/docker/go-connections/sockets/tcp_socket.go
@@ -0,0 +1,22 @@
+// Package sockets provides helper functions to create and configure Unix or TCP sockets.
+package sockets
+
+import (
+	"crypto/tls"
+	"net"
+)
+
+// NewTCPSocket creates a TCP socket listener with the specified address and
+// and the specified tls configuration. If TLSConfig is set, will encapsulate the
+// TCP listener inside a TLS one.
+func NewTCPSocket(addr string, tlsConfig *tls.Config) (net.Listener, error) {
+	l, err := net.Listen("tcp", addr)
+	if err != nil {
+		return nil, err
+	}
+	if tlsConfig != nil {
+		tlsConfig.NextProtos = []string{"http/1.1"}
+		l = tls.NewListener(l, tlsConfig)
+	}
+	return l, nil
+}
diff --git a/vendor/src/github.com/docker/go-connections/sockets/unix_socket.go b/vendor/src/github.com/docker/go-connections/sockets/unix_socket.go
new file mode 100644
index 0000000..d162734
--- /dev/null
+++ b/vendor/src/github.com/docker/go-connections/sockets/unix_socket.go
@@ -0,0 +1,80 @@
+// +build linux freebsd solaris
+
+package sockets
+
+import (
+	"fmt"
+	"net"
+	"os"
+	"strconv"
+	"syscall"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/opencontainers/runc/libcontainer/user"
+)
+
+// NewUnixSocket creates a unix socket with the specified path and group.
+func NewUnixSocket(path, group string) (net.Listener, error) {
+	if err := syscall.Unlink(path); err != nil && !os.IsNotExist(err) {
+		return nil, err
+	}
+	mask := syscall.Umask(0777)
+	defer syscall.Umask(mask)
+	l, err := net.Listen("unix", path)
+	if err != nil {
+		return nil, err
+	}
+	if err := setSocketGroup(path, group); err != nil {
+		l.Close()
+		return nil, err
+	}
+	if err := os.Chmod(path, 0660); err != nil {
+		l.Close()
+		return nil, err
+	}
+	return l, nil
+}
+
+func setSocketGroup(path, group string) error {
+	if group == "" {
+		return nil
+	}
+	if err := changeGroup(path, group); err != nil {
+		if group != "docker" {
+			return err
+		}
+		logrus.Debugf("Warning: could not change group %s to docker: %v", path, err)
+	}
+	return nil
+}
+
+func changeGroup(path string, nameOrGid string) error {
+	gid, err := lookupGidByName(nameOrGid)
+	if err != nil {
+		return err
+	}
+	logrus.Debugf("%s group found. gid: %d", nameOrGid, gid)
+	return os.Chown(path, 0, gid)
+}
+
+func lookupGidByName(nameOrGid string) (int, error) {
+	groupFile, err := user.GetGroupPath()
+	if err != nil {
+		return -1, err
+	}
+	groups, err := user.ParseGroupFileFilter(groupFile, func(g user.Group) bool {
+		return g.Name == nameOrGid || strconv.Itoa(g.Gid) == nameOrGid
+	})
+	if err != nil {
+		return -1, err
+	}
+	if groups != nil && len(groups) > 0 {
+		return groups[0].Gid, nil
+	}
+	gid, err := strconv.Atoi(nameOrGid)
+	if err == nil {
+		logrus.Warnf("Could not find GID %d", gid)
+		return gid, nil
+	}
+	return -1, fmt.Errorf("Group %s not found", nameOrGid)
+}
diff --git a/vendor/src/github.com/docker/libnetwork/LICENSE b/vendor/src/github.com/docker/libnetwork/LICENSE
new file mode 100644
index 0000000..e06d208
--- /dev/null
+++ b/vendor/src/github.com/docker/libnetwork/LICENSE
@@ -0,0 +1,202 @@
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright {yyyy} {name of copyright owner}
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
diff --git a/vendor/src/github.com/docker/libnetwork/portallocator/portallocator.go b/vendor/src/github.com/docker/libnetwork/portallocator/portallocator.go
new file mode 100644
index 0000000..240e94f
--- /dev/null
+++ b/vendor/src/github.com/docker/libnetwork/portallocator/portallocator.go
@@ -0,0 +1,270 @@
+package portallocator
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"net"
+	"os"
+	"sync"
+)
+
+const (
+	// DefaultPortRangeStart indicates the first port in port range
+	DefaultPortRangeStart = 49153
+	// DefaultPortRangeEnd indicates the last port in port range
+	DefaultPortRangeEnd = 65535
+)
+
+type ipMapping map[string]protoMap
+
+var (
+	// ErrAllPortsAllocated is returned when no more ports are available
+	ErrAllPortsAllocated = errors.New("all ports are allocated")
+	// ErrUnknownProtocol is returned when an unknown protocol was specified
+	ErrUnknownProtocol = errors.New("unknown protocol")
+	defaultIP          = net.ParseIP("0.0.0.0")
+	once               sync.Once
+	instance           *PortAllocator
+	createInstance     = func() { instance = newInstance() }
+)
+
+// ErrPortAlreadyAllocated is the returned error information when a requested port is already being used
+type ErrPortAlreadyAllocated struct {
+	ip   string
+	port int
+}
+
+func newErrPortAlreadyAllocated(ip string, port int) ErrPortAlreadyAllocated {
+	return ErrPortAlreadyAllocated{
+		ip:   ip,
+		port: port,
+	}
+}
+
+// IP returns the address to which the used port is associated
+func (e ErrPortAlreadyAllocated) IP() string {
+	return e.ip
+}
+
+// Port returns the value of the already used port
+func (e ErrPortAlreadyAllocated) Port() int {
+	return e.port
+}
+
+// IPPort returns the address and the port in the form ip:port
+func (e ErrPortAlreadyAllocated) IPPort() string {
+	return fmt.Sprintf("%s:%d", e.ip, e.port)
+}
+
+// Error is the implementation of error.Error interface
+func (e ErrPortAlreadyAllocated) Error() string {
+	return fmt.Sprintf("Bind for %s:%d failed: port is already allocated", e.ip, e.port)
+}
+
+type (
+	// PortAllocator manages the transport ports database
+	PortAllocator struct {
+		mutex sync.Mutex
+		ipMap ipMapping
+		Begin int
+		End   int
+	}
+	portRange struct {
+		begin int
+		end   int
+		last  int
+	}
+	portMap struct {
+		p            map[int]struct{}
+		defaultRange string
+		portRanges   map[string]*portRange
+	}
+	protoMap map[string]*portMap
+)
+
+// Get returns the default instance of PortAllocator
+func Get() *PortAllocator {
+	// Port Allocator is a singleton
+	// Note: Long term solution will be each PortAllocator will have access to
+	// the OS so that it can have up to date view of the OS port allocation.
+	// When this happens singleton behavior will be removed. Clients do not
+	// need to worry about this, they will not see a change in behavior.
+	once.Do(createInstance)
+	return instance
+}
+
+func newInstance() *PortAllocator {
+	start, end, err := getDynamicPortRange()
+	if err != nil {
+		start, end = DefaultPortRangeStart, DefaultPortRangeEnd
+	}
+	return &PortAllocator{
+		ipMap: ipMapping{},
+		Begin: start,
+		End:   end,
+	}
+}
+
+func getDynamicPortRange() (start int, end int, err error) {
+	const portRangeKernelParam = "/proc/sys/net/ipv4/ip_local_port_range"
+	portRangeFallback := fmt.Sprintf("using fallback port range %d-%d", DefaultPortRangeStart, DefaultPortRangeEnd)
+	file, err := os.Open(portRangeKernelParam)
+	if err != nil {
+		return 0, 0, fmt.Errorf("port allocator - %s due to error: %v", portRangeFallback, err)
+	}
+
+	defer file.Close()
+
+	n, err := fmt.Fscanf(bufio.NewReader(file), "%d\t%d", &start, &end)
+	if n != 2 || err != nil {
+		if err == nil {
+			err = fmt.Errorf("unexpected count of parsed numbers (%d)", n)
+		}
+		return 0, 0, fmt.Errorf("port allocator - failed to parse system ephemeral port range from %s - %s: %v", portRangeKernelParam, portRangeFallback, err)
+	}
+	return start, end, nil
+}
+
+// RequestPort requests new port from global ports pool for specified ip and proto.
+// If port is 0 it returns first free port. Otherwise it checks port availability
+// in proto's pool and returns that port or error if port is already busy.
+func (p *PortAllocator) RequestPort(ip net.IP, proto string, port int) (int, error) {
+	return p.RequestPortInRange(ip, proto, port, port)
+}
+
+// RequestPortInRange requests new port from global ports pool for specified ip and proto.
+// If portStart and portEnd are 0 it returns the first free port in the default ephemeral range.
+// If portStart != portEnd it returns the first free port in the requested range.
+// Otherwise (portStart == portEnd) it checks port availability in the requested proto's port-pool
+// and returns that port or error if port is already busy.
+func (p *PortAllocator) RequestPortInRange(ip net.IP, proto string, portStart, portEnd int) (int, error) {
+	p.mutex.Lock()
+	defer p.mutex.Unlock()
+
+	if proto != "tcp" && proto != "udp" {
+		return 0, ErrUnknownProtocol
+	}
+
+	if ip == nil {
+		ip = defaultIP
+	}
+	ipstr := ip.String()
+	protomap, ok := p.ipMap[ipstr]
+	if !ok {
+		protomap = protoMap{
+			"tcp": p.newPortMap(),
+			"udp": p.newPortMap(),
+		}
+
+		p.ipMap[ipstr] = protomap
+	}
+	mapping := protomap[proto]
+	if portStart > 0 && portStart == portEnd {
+		if _, ok := mapping.p[portStart]; !ok {
+			mapping.p[portStart] = struct{}{}
+			return portStart, nil
+		}
+		return 0, newErrPortAlreadyAllocated(ipstr, portStart)
+	}
+
+	port, err := mapping.findPort(portStart, portEnd)
+	if err != nil {
+		return 0, err
+	}
+	return port, nil
+}
+
+// ReleasePort releases port from global ports pool for specified ip and proto.
+func (p *PortAllocator) ReleasePort(ip net.IP, proto string, port int) error {
+	p.mutex.Lock()
+	defer p.mutex.Unlock()
+
+	if ip == nil {
+		ip = defaultIP
+	}
+	protomap, ok := p.ipMap[ip.String()]
+	if !ok {
+		return nil
+	}
+	delete(protomap[proto].p, port)
+	return nil
+}
+
+func (p *PortAllocator) newPortMap() *portMap {
+	defaultKey := getRangeKey(p.Begin, p.End)
+	pm := &portMap{
+		p:            map[int]struct{}{},
+		defaultRange: defaultKey,
+		portRanges: map[string]*portRange{
+			defaultKey: newPortRange(p.Begin, p.End),
+		},
+	}
+	return pm
+}
+
+// ReleaseAll releases all ports for all ips.
+func (p *PortAllocator) ReleaseAll() error {
+	p.mutex.Lock()
+	p.ipMap = ipMapping{}
+	p.mutex.Unlock()
+	return nil
+}
+
+func getRangeKey(portStart, portEnd int) string {
+	return fmt.Sprintf("%d-%d", portStart, portEnd)
+}
+
+func newPortRange(portStart, portEnd int) *portRange {
+	return &portRange{
+		begin: portStart,
+		end:   portEnd,
+		last:  portEnd,
+	}
+}
+
+func (pm *portMap) getPortRange(portStart, portEnd int) (*portRange, error) {
+	var key string
+	if portStart == 0 && portEnd == 0 {
+		key = pm.defaultRange
+	} else {
+		key = getRangeKey(portStart, portEnd)
+		if portStart == portEnd ||
+			portStart == 0 || portEnd == 0 ||
+			portEnd < portStart {
+			return nil, fmt.Errorf("invalid port range: %s", key)
+		}
+	}
+
+	// Return existing port range, if already known.
+	if pr, exists := pm.portRanges[key]; exists {
+		return pr, nil
+	}
+
+	// Otherwise create a new port range.
+	pr := newPortRange(portStart, portEnd)
+	pm.portRanges[key] = pr
+	return pr, nil
+}
+
+func (pm *portMap) findPort(portStart, portEnd int) (int, error) {
+	pr, err := pm.getPortRange(portStart, portEnd)
+	if err != nil {
+		return 0, err
+	}
+	port := pr.last
+
+	for i := 0; i <= pr.end-pr.begin; i++ {
+		port++
+		if port > pr.end {
+			port = pr.begin
+		}
+
+		if _, ok := pm.p[port]; !ok {
+			pm.p[port] = struct{}{}
+			pr.last = port
+			return port, nil
+		}
+	}
+	return 0, ErrAllPortsAllocated
+}
diff --git a/vendor/src/golang.org/x/net/proxy/direct.go b/vendor/src/golang.org/x/net/proxy/direct.go
new file mode 100644
index 0000000..4c5ad88
--- /dev/null
+++ b/vendor/src/golang.org/x/net/proxy/direct.go
@@ -0,0 +1,18 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package proxy
+
+import (
+	"net"
+)
+
+type direct struct{}
+
+// Direct is a direct proxy: one that makes network connections directly.
+var Direct = direct{}
+
+func (direct) Dial(network, addr string) (net.Conn, error) {
+	return net.Dial(network, addr)
+}
diff --git a/vendor/src/golang.org/x/net/proxy/per_host.go b/vendor/src/golang.org/x/net/proxy/per_host.go
new file mode 100644
index 0000000..f540b19
--- /dev/null
+++ b/vendor/src/golang.org/x/net/proxy/per_host.go
@@ -0,0 +1,140 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package proxy
+
+import (
+	"net"
+	"strings"
+)
+
+// A PerHost directs connections to a default Dialer unless the hostname
+// requested matches one of a number of exceptions.
+type PerHost struct {
+	def, bypass Dialer
+
+	bypassNetworks []*net.IPNet
+	bypassIPs      []net.IP
+	bypassZones    []string
+	bypassHosts    []string
+}
+
+// NewPerHost returns a PerHost Dialer that directs connections to either
+// defaultDialer or bypass, depending on whether the connection matches one of
+// the configured rules.
+func NewPerHost(defaultDialer, bypass Dialer) *PerHost {
+	return &PerHost{
+		def:    defaultDialer,
+		bypass: bypass,
+	}
+}
+
+// Dial connects to the address addr on the given network through either
+// defaultDialer or bypass.
+func (p *PerHost) Dial(network, addr string) (c net.Conn, err error) {
+	host, _, err := net.SplitHostPort(addr)
+	if err != nil {
+		return nil, err
+	}
+
+	return p.dialerForRequest(host).Dial(network, addr)
+}
+
+func (p *PerHost) dialerForRequest(host string) Dialer {
+	if ip := net.ParseIP(host); ip != nil {
+		for _, net := range p.bypassNetworks {
+			if net.Contains(ip) {
+				return p.bypass
+			}
+		}
+		for _, bypassIP := range p.bypassIPs {
+			if bypassIP.Equal(ip) {
+				return p.bypass
+			}
+		}
+		return p.def
+	}
+
+	for _, zone := range p.bypassZones {
+		if strings.HasSuffix(host, zone) {
+			return p.bypass
+		}
+		if host == zone[1:] {
+			// For a zone "example.com", we match "example.com"
+			// too.
+			return p.bypass
+		}
+	}
+	for _, bypassHost := range p.bypassHosts {
+		if bypassHost == host {
+			return p.bypass
+		}
+	}
+	return p.def
+}
+
+// AddFromString parses a string that contains comma-separated values
+// specifying hosts that should use the bypass proxy. Each value is either an
+// IP address, a CIDR range, a zone (*.example.com) or a hostname
+// (localhost). A best effort is made to parse the string and errors are
+// ignored.
+func (p *PerHost) AddFromString(s string) {
+	hosts := strings.Split(s, ",")
+	for _, host := range hosts {
+		host = strings.TrimSpace(host)
+		if len(host) == 0 {
+			continue
+		}
+		if strings.Contains(host, "/") {
+			// We assume that it's a CIDR address like 127.0.0.0/8
+			if _, net, err := net.ParseCIDR(host); err == nil {
+				p.AddNetwork(net)
+			}
+			continue
+		}
+		if ip := net.ParseIP(host); ip != nil {
+			p.AddIP(ip)
+			continue
+		}
+		if strings.HasPrefix(host, "*.") {
+			p.AddZone(host[1:])
+			continue
+		}
+		p.AddHost(host)
+	}
+}
+
+// AddIP specifies an IP address that will use the bypass proxy. Note that
+// this will only take effect if a literal IP address is dialed. A connection
+// to a named host will never match an IP.
+func (p *PerHost) AddIP(ip net.IP) {
+	p.bypassIPs = append(p.bypassIPs, ip)
+}
+
+// AddNetwork specifies an IP range that will use the bypass proxy. Note that
+// this will only take effect if a literal IP address is dialed. A connection
+// to a named host will never match.
+func (p *PerHost) AddNetwork(net *net.IPNet) {
+	p.bypassNetworks = append(p.bypassNetworks, net)
+}
+
+// AddZone specifies a DNS suffix that will use the bypass proxy. A zone of
+// "example.com" matches "example.com" and all of its subdomains.
+func (p *PerHost) AddZone(zone string) {
+	if strings.HasSuffix(zone, ".") {
+		zone = zone[:len(zone)-1]
+	}
+	if !strings.HasPrefix(zone, ".") {
+		zone = "." + zone
+	}
+	p.bypassZones = append(p.bypassZones, zone)
+}
+
+// AddHost specifies a hostname that will use the bypass proxy.
+func (p *PerHost) AddHost(host string) {
+	if strings.HasSuffix(host, ".") {
+		host = host[:len(host)-1]
+	}
+	p.bypassHosts = append(p.bypassHosts, host)
+}
diff --git a/vendor/src/golang.org/x/net/proxy/proxy.go b/vendor/src/golang.org/x/net/proxy/proxy.go
new file mode 100644
index 0000000..78a8b7b
--- /dev/null
+++ b/vendor/src/golang.org/x/net/proxy/proxy.go
@@ -0,0 +1,94 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package proxy provides support for a variety of protocols to proxy network
+// data.
+package proxy // import "golang.org/x/net/proxy"
+
+import (
+	"errors"
+	"net"
+	"net/url"
+	"os"
+)
+
+// A Dialer is a means to establish a connection.
+type Dialer interface {
+	// Dial connects to the given address via the proxy.
+	Dial(network, addr string) (c net.Conn, err error)
+}
+
+// Auth contains authentication parameters that specific Dialers may require.
+type Auth struct {
+	User, Password string
+}
+
+// FromEnvironment returns the dialer specified by the proxy related variables in
+// the environment.
+func FromEnvironment() Dialer {
+	allProxy := os.Getenv("all_proxy")
+	if len(allProxy) == 0 {
+		return Direct
+	}
+
+	proxyURL, err := url.Parse(allProxy)
+	if err != nil {
+		return Direct
+	}
+	proxy, err := FromURL(proxyURL, Direct)
+	if err != nil {
+		return Direct
+	}
+
+	noProxy := os.Getenv("no_proxy")
+	if len(noProxy) == 0 {
+		return proxy
+	}
+
+	perHost := NewPerHost(proxy, Direct)
+	perHost.AddFromString(noProxy)
+	return perHost
+}
+
+// proxySchemes is a map from URL schemes to a function that creates a Dialer
+// from a URL with such a scheme.
+var proxySchemes map[string]func(*url.URL, Dialer) (Dialer, error)
+
+// RegisterDialerType takes a URL scheme and a function to generate Dialers from
+// a URL with that scheme and a forwarding Dialer. Registered schemes are used
+// by FromURL.
+func RegisterDialerType(scheme string, f func(*url.URL, Dialer) (Dialer, error)) {
+	if proxySchemes == nil {
+		proxySchemes = make(map[string]func(*url.URL, Dialer) (Dialer, error))
+	}
+	proxySchemes[scheme] = f
+}
+
+// FromURL returns a Dialer given a URL specification and an underlying
+// Dialer for it to make network requests.
+func FromURL(u *url.URL, forward Dialer) (Dialer, error) {
+	var auth *Auth
+	if u.User != nil {
+		auth = new(Auth)
+		auth.User = u.User.Username()
+		if p, ok := u.User.Password(); ok {
+			auth.Password = p
+		}
+	}
+
+	switch u.Scheme {
+	case "socks5":
+		return SOCKS5("tcp", u.Host, auth, forward)
+	}
+
+	// If the scheme doesn't match any of the built-in schemes, see if it
+	// was registered by another package.
+	if proxySchemes != nil {
+		if f, ok := proxySchemes[u.Scheme]; ok {
+			return f(u, forward)
+		}
+	}
+
+	return nil, errors.New("proxy: unknown scheme: " + u.Scheme)
+}
diff --git a/vendor/src/golang.org/x/net/proxy/socks5.go b/vendor/src/golang.org/x/net/proxy/socks5.go
new file mode 100644
index 0000000..9b96282
--- /dev/null
+++ b/vendor/src/golang.org/x/net/proxy/socks5.go
@@ -0,0 +1,210 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package proxy
+
+import (
+	"errors"
+	"io"
+	"net"
+	"strconv"
+)
+
+// SOCKS5 returns a Dialer that makes SOCKSv5 connections to the given address
+// with an optional username and password. See RFC 1928.
+func SOCKS5(network, addr string, auth *Auth, forward Dialer) (Dialer, error) {
+	s := &socks5{
+		network: network,
+		addr:    addr,
+		forward: forward,
+	}
+	if auth != nil {
+		s.user = auth.User
+		s.password = auth.Password
+	}
+
+	return s, nil
+}
+
+type socks5 struct {
+	user, password string
+	network, addr  string
+	forward        Dialer
+}
+
+const socks5Version = 5
+
+const (
+	socks5AuthNone     = 0
+	socks5AuthPassword = 2
+)
+
+const socks5Connect = 1
+
+const (
+	socks5IP4    = 1
+	socks5Domain = 3
+	socks5IP6    = 4
+)
+
+var socks5Errors = []string{
+	"",
+	"general failure",
+	"connection forbidden",
+	"network unreachable",
+	"host unreachable",
+	"connection refused",
+	"TTL expired",
+	"command not supported",
+	"address type not supported",
+}
+
+// Dial connects to the address addr on the network net via the SOCKS5 proxy.
+func (s *socks5) Dial(network, addr string) (net.Conn, error) {
+	switch network {
+	case "tcp", "tcp6", "tcp4":
+	default:
+		return nil, errors.New("proxy: no support for SOCKS5 proxy connections of type " + network)
+	}
+
+	conn, err := s.forward.Dial(s.network, s.addr)
+	if err != nil {
+		return nil, err
+	}
+	closeConn := &conn
+	defer func() {
+		if closeConn != nil {
+			(*closeConn).Close()
+		}
+	}()
+
+	host, portStr, err := net.SplitHostPort(addr)
+	if err != nil {
+		return nil, err
+	}
+
+	port, err := strconv.Atoi(portStr)
+	if err != nil {
+		return nil, errors.New("proxy: failed to parse port number: " + portStr)
+	}
+	if port < 1 || port > 0xffff {
+		return nil, errors.New("proxy: port number out of range: " + portStr)
+	}
+
+	// the size here is just an estimate
+	buf := make([]byte, 0, 6+len(host))
+
+	buf = append(buf, socks5Version)
+	if len(s.user) > 0 && len(s.user) < 256 && len(s.password) < 256 {
+		buf = append(buf, 2 /* num auth methods */, socks5AuthNone, socks5AuthPassword)
+	} else {
+		buf = append(buf, 1 /* num auth methods */, socks5AuthNone)
+	}
+
+	if _, err := conn.Write(buf); err != nil {
+		return nil, errors.New("proxy: failed to write greeting to SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+
+	if _, err := io.ReadFull(conn, buf[:2]); err != nil {
+		return nil, errors.New("proxy: failed to read greeting from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+	if buf[0] != 5 {
+		return nil, errors.New("proxy: SOCKS5 proxy at " + s.addr + " has unexpected version " + strconv.Itoa(int(buf[0])))
+	}
+	if buf[1] == 0xff {
+		return nil, errors.New("proxy: SOCKS5 proxy at " + s.addr + " requires authentication")
+	}
+
+	if buf[1] == socks5AuthPassword {
+		buf = buf[:0]
+		buf = append(buf, 1 /* password protocol version */)
+		buf = append(buf, uint8(len(s.user)))
+		buf = append(buf, s.user...)
+		buf = append(buf, uint8(len(s.password)))
+		buf = append(buf, s.password...)
+
+		if _, err := conn.Write(buf); err != nil {
+			return nil, errors.New("proxy: failed to write authentication request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
+		}
+
+		if _, err := io.ReadFull(conn, buf[:2]); err != nil {
+			return nil, errors.New("proxy: failed to read authentication reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+		}
+
+		if buf[1] != 0 {
+			return nil, errors.New("proxy: SOCKS5 proxy at " + s.addr + " rejected username/password")
+		}
+	}
+
+	buf = buf[:0]
+	buf = append(buf, socks5Version, socks5Connect, 0 /* reserved */)
+
+	if ip := net.ParseIP(host); ip != nil {
+		if ip4 := ip.To4(); ip4 != nil {
+			buf = append(buf, socks5IP4)
+			ip = ip4
+		} else {
+			buf = append(buf, socks5IP6)
+		}
+		buf = append(buf, ip...)
+	} else {
+		if len(host) > 255 {
+			return nil, errors.New("proxy: destination hostname too long: " + host)
+		}
+		buf = append(buf, socks5Domain)
+		buf = append(buf, byte(len(host)))
+		buf = append(buf, host...)
+	}
+	buf = append(buf, byte(port>>8), byte(port))
+
+	if _, err := conn.Write(buf); err != nil {
+		return nil, errors.New("proxy: failed to write connect request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+
+	if _, err := io.ReadFull(conn, buf[:4]); err != nil {
+		return nil, errors.New("proxy: failed to read connect reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+
+	failure := "unknown error"
+	if int(buf[1]) < len(socks5Errors) {
+		failure = socks5Errors[buf[1]]
+	}
+
+	if len(failure) > 0 {
+		return nil, errors.New("proxy: SOCKS5 proxy at " + s.addr + " failed to connect: " + failure)
+	}
+
+	bytesToDiscard := 0
+	switch buf[3] {
+	case socks5IP4:
+		bytesToDiscard = net.IPv4len
+	case socks5IP6:
+		bytesToDiscard = net.IPv6len
+	case socks5Domain:
+		_, err := io.ReadFull(conn, buf[:1])
+		if err != nil {
+			return nil, errors.New("proxy: failed to read domain length from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+		}
+		bytesToDiscard = int(buf[0])
+	default:
+		return nil, errors.New("proxy: got unknown address type " + strconv.Itoa(int(buf[3])) + " from SOCKS5 proxy at " + s.addr)
+	}
+
+	if cap(buf) < bytesToDiscard {
+		buf = make([]byte, bytesToDiscard)
+	} else {
+		buf = buf[:bytesToDiscard]
+	}
+	if _, err := io.ReadFull(conn, buf); err != nil {
+		return nil, errors.New("proxy: failed to read address from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+
+	// Also need to discard the port number
+	if _, err := io.ReadFull(conn, buf[:2]); err != nil {
+		return nil, errors.New("proxy: failed to read port from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+	}
+
+	closeConn = nil
+	return conn, nil
+}
-- 
2.8.1

Places

File socket-activation-01-vendor.patch of Package containerd (Revision f441631403553068c1d852685eff8292)

Places