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Add glide.yaml and vendor deps

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Dalton Hubble 2016-12-03 22:43:32 -08:00
parent db918f12ad
commit 5b3d5e81bd
18880 changed files with 5166045 additions and 1 deletions
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55
vendor/github.com/docker/go-connections/CONTRIBUTING.md generated vendored Normal file
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# Contributing to Docker
### Sign your work
The sign-off is a simple line at the end of the explanation for the patch. Your
signature certifies that you wrote the patch or otherwise have the right to pass
it on as an open-source patch. The rules are pretty simple: if you can certify
the below (from [developercertificate.org](http://developercertificate.org/)):
```
Developer Certificate of Origin
Version 1.1
Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
660 York Street, Suite 102,
San Francisco, CA 94110 USA
Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.
Developer's Certificate of Origin 1.1
By making a contribution to this project, I certify that:
(a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or
(b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or
(c) The contribution was provided directly to me by some other
person who certified (a), (b) or (c) and I have not modified
it.
(d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.
```
Then you just add a line to every git commit message:
Signed-off-by: Joe Smith <joe.smith@email.com>
Use your real name (sorry, no pseudonyms or anonymous contributions.)
If you set your `user.name` and `user.email` git configs, you can sign your
commit automatically with `git commit -s`.

191
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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,
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5. Submission of Contributions. Unless You explicitly state otherwise,
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Notwithstanding the above, nothing herein shall supersede or modify
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6. Trademarks. This License does not grant permission to use the trade
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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
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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
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9. Accepting Warranty or Additional Liability. While redistributing
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of any other Contributor, and only if You agree to indemnify,
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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.

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# go-connections maintainers file
#
# This file describes who runs the docker/go-connections project and how.
# This is a living document - if you see something out of date or missing, speak up!
#
# It is structured to be consumable by both humans and programs.
# To extract its contents programmatically, use any TOML-compliant parser.
#
# This file is compiled into the MAINTAINERS file in docker/opensource.
#
[Org]
[Org."Core maintainers"]
people = [
"calavera",
]
[people]
# A reference list of all people associated with the project.
# All other sections should refer to people by their canonical key
# in the people section.
# ADD YOURSELF HERE IN ALPHABETICAL ORDER
[people.calavera]
Name = "David Calavera"
Email = "david.calavera@gmail.com"
GitHub = "calavera"

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[![GoDoc](https://godoc.org/github.com/docker/go-connections?status.svg)](https://godoc.org/github.com/docker/go-connections)
# Introduction
go-connections provides common package to work with network connections.
## Usage
See the [docs in godoc](https://godoc.org/github.com/docker/go-connections) for examples and documentation.
## License
go-connections is licensed under the Apache License, Version 2.0. See [LICENSE](LICENSE) for the full license text.

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dependencies:
pre:
# setup ipv6
- sudo sysctl -w net.ipv6.conf.lo.disable_ipv6=0 net.ipv6.conf.default.disable_ipv6=0 net.ipv6.conf.all.disable_ipv6=0
post:
# install golint
- go get github.com/golang/lint/golint
test:
pre:
# run analysis before tests
- go vet ./...
- test -z "$(golint ./... | tee /dev/stderr)"
- test -z "$(gofmt -s -l . | tee /dev/stderr)"

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// Package connections provides libraries to work with network connections.
// This library is divided in several components for specific usage.
package connections

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// Package nat is a convenience package for manipulation of strings describing network ports.
package nat
import (
"fmt"
"net"
"strconv"
"strings"
)
const (
// portSpecTemplate is the expected format for port specifications
portSpecTemplate = "ip:hostPort:containerPort"
)
// PortBinding represents a binding between a Host IP address and a Host Port
type PortBinding struct {
// HostIP is the host IP Address
HostIP string `json:"HostIp"`
// HostPort is the host port number
HostPort string
}
// PortMap is a collection of PortBinding indexed by Port
type PortMap map[Port][]PortBinding
// PortSet is a collection of structs indexed by Port
type PortSet map[Port]struct{}
// Port is a string containing port number and protocol in the format "80/tcp"
type Port string
// NewPort creates a new instance of a Port given a protocol and port number or port range
func NewPort(proto, port string) (Port, error) {
// Check for parsing issues on "port" now so we can avoid having
// to check it later on.
portStartInt, portEndInt, err := ParsePortRangeToInt(port)
if err != nil {
return "", err
}
if portStartInt == portEndInt {
return Port(fmt.Sprintf("%d/%s", portStartInt, proto)), nil
}
return Port(fmt.Sprintf("%d-%d/%s", portStartInt, portEndInt, proto)), nil
}
// ParsePort parses the port number string and returns an int
func ParsePort(rawPort string) (int, error) {
if len(rawPort) == 0 {
return 0, nil
}
port, err := strconv.ParseUint(rawPort, 10, 16)
if err != nil {
return 0, err
}
return int(port), nil
}
// ParsePortRangeToInt parses the port range string and returns start/end ints
func ParsePortRangeToInt(rawPort string) (int, int, error) {
if len(rawPort) == 0 {
return 0, 0, nil
}
start, end, err := ParsePortRange(rawPort)
if err != nil {
return 0, 0, err
}
return int(start), int(end), nil
}
// Proto returns the protocol of a Port
func (p Port) Proto() string {
proto, _ := SplitProtoPort(string(p))
return proto
}
// Port returns the port number of a Port
func (p Port) Port() string {
_, port := SplitProtoPort(string(p))
return port
}
// Int returns the port number of a Port as an int
func (p Port) Int() int {
portStr := p.Port()
// We don't need to check for an error because we're going to
// assume that any error would have been found, and reported, in NewPort()
port, _ := ParsePort(portStr)
return port
}
// Range returns the start/end port numbers of a Port range as ints
func (p Port) Range() (int, int, error) {
return ParsePortRangeToInt(p.Port())
}
// SplitProtoPort splits a port in the format of proto/port
func SplitProtoPort(rawPort string) (string, string) {
parts := strings.Split(rawPort, "/")
l := len(parts)
if len(rawPort) == 0 || l == 0 || len(parts[0]) == 0 {
return "", ""
}
if l == 1 {
return "tcp", rawPort
}
if len(parts[1]) == 0 {
return "tcp", parts[0]
}
return parts[1], parts[0]
}
func validateProto(proto string) bool {
for _, availableProto := range []string{"tcp", "udp"} {
if availableProto == proto {
return true
}
}
return false
}
// ParsePortSpecs receives port specs in the format of ip:public:private/proto and parses
// these in to the internal types
func ParsePortSpecs(ports []string) (map[Port]struct{}, map[Port][]PortBinding, error) {
var (
exposedPorts = make(map[Port]struct{}, len(ports))
bindings = make(map[Port][]PortBinding)
)
for _, rawPort := range ports {
portMappings, err := ParsePortSpec(rawPort)
if err != nil {
return nil, nil, err
}
for _, portMapping := range portMappings {
port := portMapping.Port
if _, exists := exposedPorts[port]; !exists {
exposedPorts[port] = struct{}{}
}
bslice, exists := bindings[port]
if !exists {
bslice = []PortBinding{}
}
bindings[port] = append(bslice, portMapping.Binding)
}
}
return exposedPorts, bindings, nil
}
// PortMapping is a data object mapping a Port to a PortBinding
type PortMapping struct {
Port Port
Binding PortBinding
}
func splitParts(rawport string) (string, string, string) {
parts := strings.Split(rawport, ":")
n := len(parts)
containerport := parts[n-1]
switch n {
case 1:
return "", "", containerport
case 2:
return "", parts[0], containerport
case 3:
return parts[0], parts[1], containerport
default:
return strings.Join(parts[:n-2], ":"), parts[n-2], containerport
}
}
// ParsePortSpec parses a port specification string into a slice of PortMappings
func ParsePortSpec(rawPort string) ([]PortMapping, error) {
var proto string
rawIP, hostPort, containerPort := splitParts(rawPort)
proto, containerPort = SplitProtoPort(containerPort)
// Strip [] from IPV6 addresses
ip, _, err := net.SplitHostPort(rawIP + ":")
if err != nil {
return nil, fmt.Errorf("Invalid ip address %v: %s", rawIP, err)
}
if ip != "" && net.ParseIP(ip) == nil {
return nil, fmt.Errorf("Invalid ip address: %s", ip)
}
if containerPort == "" {
return nil, fmt.Errorf("No port specified: %s<empty>", rawPort)
}
startPort, endPort, err := ParsePortRange(containerPort)
if err != nil {
return nil, fmt.Errorf("Invalid containerPort: %s", containerPort)
}
var startHostPort, endHostPort uint64 = 0, 0
if len(hostPort) > 0 {
startHostPort, endHostPort, err = ParsePortRange(hostPort)
if err != nil {
return nil, fmt.Errorf("Invalid hostPort: %s", hostPort)
}
}
if hostPort != "" && (endPort-startPort) != (endHostPort-startHostPort) {
// Allow host port range iff containerPort is not a range.
// In this case, use the host port range as the dynamic
// host port range to allocate into.
if endPort != startPort {
return nil, fmt.Errorf("Invalid ranges specified for container and host Ports: %s and %s", containerPort, hostPort)
}
}
if !validateProto(strings.ToLower(proto)) {
return nil, fmt.Errorf("Invalid proto: %s", proto)
}
ports := []PortMapping{}
for i := uint64(0); i <= (endPort - startPort); i++ {
containerPort = strconv.FormatUint(startPort+i, 10)
if len(hostPort) > 0 {
hostPort = strconv.FormatUint(startHostPort+i, 10)
}
// Set hostPort to a range only if there is a single container port
// and a dynamic host port.
if startPort == endPort && startHostPort != endHostPort {
hostPort = fmt.Sprintf("%s-%s", hostPort, strconv.FormatUint(endHostPort, 10))
}
port, err := NewPort(strings.ToLower(proto), containerPort)
if err != nil {
return nil, err
}
binding := PortBinding{
HostIP: ip,
HostPort: hostPort,
}
ports = append(ports, PortMapping{Port: port, Binding: binding})
}
return ports, nil
}

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package nat
import (
"fmt"
"strconv"
"strings"
)
// PartParser parses and validates the specified string (data) using the specified template
// e.g. ip:public:private -> 192.168.0.1:80:8000
// DEPRECATED: do not use, this function may be removed in a future version
func PartParser(template, data string) (map[string]string, error) {
// ip:public:private
var (
templateParts = strings.Split(template, ":")
parts = strings.Split(data, ":")
out = make(map[string]string, len(templateParts))
)
if len(parts) != len(templateParts) {
return nil, fmt.Errorf("Invalid format to parse. %s should match template %s", data, template)
}
for i, t := range templateParts {
value := ""
if len(parts) > i {
value = parts[i]
}
out[t] = value
}
return out, nil
}
// ParsePortRange parses and validates the specified string as a port-range (8000-9000)
func ParsePortRange(ports string) (uint64, uint64, error) {
if ports == "" {
return 0, 0, fmt.Errorf("Empty string specified for ports.")
}
if !strings.Contains(ports, "-") {
start, err := strconv.ParseUint(ports, 10, 16)
end := start
return start, end, err
}
parts := strings.Split(ports, "-")
start, err := strconv.ParseUint(parts[0], 10, 16)
if err != nil {
return 0, 0, err
}
end, err := strconv.ParseUint(parts[1], 10, 16)
if err != nil {
return 0, 0, err
}
if end < start {
return 0, 0, fmt.Errorf("Invalid range specified for the Port: %s", ports)
}
return start, end, nil
}

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package nat
import (
"strings"
"testing"
)
func TestParsePortRange(t *testing.T) {
if start, end, err := ParsePortRange("8000-8080"); err != nil || start != 8000 || end != 8080 {
t.Fatalf("Error: %s or Expecting {start,end} values {8000,8080} but found {%d,%d}.", err, start, end)
}
}
func TestParsePortRangeEmpty(t *testing.T) {
if _, _, err := ParsePortRange(""); err == nil || err.Error() != "Empty string specified for ports." {
t.Fatalf("Expected error 'Empty string specified for ports.', got %v", err)
}
}
func TestParsePortRangeWithNoRange(t *testing.T) {
start, end, err := ParsePortRange("8080")
if err != nil {
t.Fatal(err)
}
if start != 8080 || end != 8080 {
t.Fatalf("Expected start and end to be the same and equal to 8080, but were %v and %v", start, end)
}
}
func TestParsePortRangeIncorrectRange(t *testing.T) {
if _, _, err := ParsePortRange("9000-8080"); err == nil || !strings.Contains(err.Error(), "Invalid range specified for the Port") {
t.Fatalf("Expecting error 'Invalid range specified for the Port' but received %s.", err)
}
}
func TestParsePortRangeIncorrectEndRange(t *testing.T) {
if _, _, err := ParsePortRange("8000-a"); err == nil || !strings.Contains(err.Error(), "invalid syntax") {
t.Fatalf("Expecting error 'Invalid range specified for the Port' but received %s.", err)
}
if _, _, err := ParsePortRange("8000-30a"); err == nil || !strings.Contains(err.Error(), "invalid syntax") {
t.Fatalf("Expecting error 'Invalid range specified for the Port' but received %s.", err)
}
}
func TestParsePortRangeIncorrectStartRange(t *testing.T) {
if _, _, err := ParsePortRange("a-8000"); err == nil || !strings.Contains(err.Error(), "invalid syntax") {
t.Fatalf("Expecting error 'Invalid range specified for the Port' but received %s.", err)
}
if _, _, err := ParsePortRange("30a-8000"); err == nil || !strings.Contains(err.Error(), "invalid syntax") {
t.Fatalf("Expecting error 'Invalid range specified for the Port' but received %s.", err)
}
}

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package nat
import (
"sort"
"strings"
)
type portSorter struct {
ports []Port
by func(i, j Port) bool
}
func (s *portSorter) Len() int {
return len(s.ports)
}
func (s *portSorter) Swap(i, j int) {
s.ports[i], s.ports[j] = s.ports[j], s.ports[i]
}
func (s *portSorter) Less(i, j int) bool {
ip := s.ports[i]
jp := s.ports[j]
return s.by(ip, jp)
}
// Sort sorts a list of ports using the provided predicate
// This function should compare `i` and `j`, returning true if `i` is
// considered to be less than `j`
func Sort(ports []Port, predicate func(i, j Port) bool) {
s := &portSorter{ports, predicate}
sort.Sort(s)
}
type portMapEntry struct {
port Port
binding PortBinding
}
type portMapSorter []portMapEntry
func (s portMapSorter) Len() int { return len(s) }
func (s portMapSorter) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
// sort the port so that the order is:
// 1. port with larger specified bindings
// 2. larger port
// 3. port with tcp protocol
func (s portMapSorter) Less(i, j int) bool {
pi, pj := s[i].port, s[j].port
hpi, hpj := toInt(s[i].binding.HostPort), toInt(s[j].binding.HostPort)
return hpi > hpj || pi.Int() > pj.Int() || (pi.Int() == pj.Int() && strings.ToLower(pi.Proto()) == "tcp")
}
// SortPortMap sorts the list of ports and their respected mapping. The ports
// will explicit HostPort will be placed first.
func SortPortMap(ports []Port, bindings PortMap) {
s := portMapSorter{}
for _, p := range ports {
if binding, ok := bindings[p]; ok {
for _, b := range binding {
s = append(s, portMapEntry{port: p, binding: b})
}
bindings[p] = []PortBinding{}
} else {
s = append(s, portMapEntry{port: p})
}
}
sort.Sort(s)
var (
i int
pm = make(map[Port]struct{})
)
// reorder ports
for _, entry := range s {
if _, ok := pm[entry.port]; !ok {
ports[i] = entry.port
pm[entry.port] = struct{}{}
i++
}
// reorder bindings for this port
if _, ok := bindings[entry.port]; ok {
bindings[entry.port] = append(bindings[entry.port], entry.binding)
}
}
}
func toInt(s string) uint64 {
i, _, err := ParsePortRange(s)
if err != nil {
i = 0
}
return i
}

85
vendor/github.com/docker/go-connections/nat/sort_test.go generated vendored Normal file
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@ -0,0 +1,85 @@
package nat
import (
"fmt"
"reflect"
"testing"
)
func TestSortUniquePorts(t *testing.T) {
ports := []Port{
Port("6379/tcp"),
Port("22/tcp"),
}
Sort(ports, func(ip, jp Port) bool {
return ip.Int() < jp.Int() || (ip.Int() == jp.Int() && ip.Proto() == "tcp")
})
first := ports[0]
if fmt.Sprint(first) != "22/tcp" {
t.Log(fmt.Sprint(first))
t.Fail()
}
}
func TestSortSamePortWithDifferentProto(t *testing.T) {
ports := []Port{
Port("8888/tcp"),
Port("8888/udp"),
Port("6379/tcp"),
Port("6379/udp"),
}
Sort(ports, func(ip, jp Port) bool {
return ip.Int() < jp.Int() || (ip.Int() == jp.Int() && ip.Proto() == "tcp")
})
first := ports[0]
if fmt.Sprint(first) != "6379/tcp" {
t.Fail()
}
}
func TestSortPortMap(t *testing.T) {
ports := []Port{
Port("22/tcp"),
Port("22/udp"),
Port("8000/tcp"),
Port("6379/tcp"),
Port("9999/tcp"),
}
portMap := PortMap{
Port("22/tcp"): []PortBinding{
{},
},
Port("8000/tcp"): []PortBinding{
{},
},
Port("6379/tcp"): []PortBinding{
{},
{HostIP: "0.0.0.0", HostPort: "32749"},
},
Port("9999/tcp"): []PortBinding{
{HostIP: "0.0.0.0", HostPort: "40000"},
},
}
SortPortMap(ports, portMap)
if !reflect.DeepEqual(ports, []Port{
Port("9999/tcp"),
Port("6379/tcp"),
Port("8000/tcp"),
Port("22/tcp"),
Port("22/udp"),
}) {
t.Errorf("failed to prioritize port with explicit mappings, got %v", ports)
}
if pm := portMap[Port("6379/tcp")]; !reflect.DeepEqual(pm, []PortBinding{
{HostIP: "0.0.0.0", HostPort: "32749"},
{},
}) {
t.Errorf("failed to prioritize bindings with explicit mappings, got %v", pm)
}
}

216
vendor/github.com/docker/go-connections/proxy/network_proxy_test.go generated vendored Normal file
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@ -0,0 +1,216 @@
package proxy
import (
"bytes"
"fmt"
"io"
"net"
"strings"
"testing"
"time"
)
var testBuf = []byte("Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo")
var testBufSize = len(testBuf)
type EchoServer interface {
Run()
Close()
LocalAddr() net.Addr
}
type TCPEchoServer struct {
listener net.Listener
testCtx *testing.T
}
type UDPEchoServer struct {
conn net.PacketConn
testCtx *testing.T
}
func NewEchoServer(t *testing.T, proto, address string) EchoServer {
var server EchoServer
if strings.HasPrefix(proto, "tcp") {
listener, err := net.Listen(proto, address)
if err != nil {
t.Fatal(err)
}
server = &TCPEchoServer{listener: listener, testCtx: t}
} else {
socket, err := net.ListenPacket(proto, address)
if err != nil {
t.Fatal(err)
}
server = &UDPEchoServer{conn: socket, testCtx: t}
}
return server
}
func (server *TCPEchoServer) Run() {
go func() {
for {
client, err := server.listener.Accept()
if err != nil {
return
}
go func(client net.Conn) {
if _, err := io.Copy(client, client); err != nil {
server.testCtx.Logf("can't echo to the client: %v\n", err.Error())
}
client.Close()
}(client)
}
}()
}
func (server *TCPEchoServer) LocalAddr() net.Addr { return server.listener.Addr() }
func (server *TCPEchoServer) Close() { server.listener.Close() }
func (server *UDPEchoServer) Run() {
go func() {
readBuf := make([]byte, 1024)
for {
read, from, err := server.conn.ReadFrom(readBuf)
if err != nil {
return
}
for i := 0; i != read; {
written, err := server.conn.WriteTo(readBuf[i:read], from)
if err != nil {
break
}
i += written
}
}
}()
}
func (server *UDPEchoServer) LocalAddr() net.Addr { return server.conn.LocalAddr() }
func (server *UDPEchoServer) Close() { server.conn.Close() }
func testProxyAt(t *testing.T, proto string, proxy Proxy, addr string) {
defer proxy.Close()
go proxy.Run()
client, err := net.Dial(proto, addr)
if err != nil {
t.Fatalf("Can't connect to the proxy: %v", err)
}
defer client.Close()
client.SetDeadline(time.Now().Add(10 * time.Second))
if _, err = client.Write(testBuf); err != nil {
t.Fatal(err)
}
recvBuf := make([]byte, testBufSize)
if _, err = client.Read(recvBuf); err != nil {
t.Fatal(err)
}
if !bytes.Equal(testBuf, recvBuf) {
t.Fatal(fmt.Errorf("Expected [%v] but got [%v]", testBuf, recvBuf))
}
}
func testProxy(t *testing.T, proto string, proxy Proxy) {
testProxyAt(t, proto, proxy, proxy.FrontendAddr().String())
}
func TestTCP4Proxy(t *testing.T) {
backend := NewEchoServer(t, "tcp", "127.0.0.1:0")
defer backend.Close()
backend.Run()
frontendAddr := &net.TCPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0}
proxy, err := NewProxy(frontendAddr, backend.LocalAddr())
if err != nil {
t.Fatal(err)
}
testProxy(t, "tcp", proxy)
}
func TestTCP6Proxy(t *testing.T) {
backend := NewEchoServer(t, "tcp", "[::1]:0")
defer backend.Close()
backend.Run()
frontendAddr := &net.TCPAddr{IP: net.IPv6loopback, Port: 0}
proxy, err := NewProxy(frontendAddr, backend.LocalAddr())
if err != nil {
t.Fatal(err)
}
testProxy(t, "tcp", proxy)
}
func TestTCPDualStackProxy(t *testing.T) {
// If I understand `godoc -src net favoriteAddrFamily` (used by the
// net.Listen* functions) correctly this should work, but it doesn't.
t.Skip("No support for dual stack yet")
backend := NewEchoServer(t, "tcp", "[::1]:0")
defer backend.Close()
backend.Run()
frontendAddr := &net.TCPAddr{IP: net.IPv6loopback, Port: 0}
proxy, err := NewProxy(frontendAddr, backend.LocalAddr())
if err != nil {
t.Fatal(err)
}
ipv4ProxyAddr := &net.TCPAddr{
IP: net.IPv4(127, 0, 0, 1),
Port: proxy.FrontendAddr().(*net.TCPAddr).Port,
}
testProxyAt(t, "tcp", proxy, ipv4ProxyAddr.String())
}
func TestUDP4Proxy(t *testing.T) {
backend := NewEchoServer(t, "udp", "127.0.0.1:0")
defer backend.Close()
backend.Run()
frontendAddr := &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0}
proxy, err := NewProxy(frontendAddr, backend.LocalAddr())
if err != nil {
t.Fatal(err)
}
testProxy(t, "udp", proxy)
}
func TestUDP6Proxy(t *testing.T) {
backend := NewEchoServer(t, "udp", "[::1]:0")
defer backend.Close()
backend.Run()
frontendAddr := &net.UDPAddr{IP: net.IPv6loopback, Port: 0}
proxy, err := NewProxy(frontendAddr, backend.LocalAddr())
if err != nil {
t.Fatal(err)
}
testProxy(t, "udp", proxy)
}
func TestUDPWriteError(t *testing.T) {
frontendAddr := &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0}
// Hopefully, this port will be free: */
backendAddr := &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 25587}
proxy, err := NewProxy(frontendAddr, backendAddr)
if err != nil {
t.Fatal(err)
}
defer proxy.Close()
go proxy.Run()
client, err := net.Dial("udp", "127.0.0.1:25587")
if err != nil {
t.Fatalf("Can't connect to the proxy: %v", err)
}
defer client.Close()
// Make sure the proxy doesn't stop when there is no actual backend:
client.Write(testBuf)
client.Write(testBuf)
backend := NewEchoServer(t, "udp", "127.0.0.1:25587")
defer backend.Close()
backend.Run()
client.SetDeadline(time.Now().Add(10 * time.Second))
if _, err = client.Write(testBuf); err != nil {
t.Fatal(err)
}
recvBuf := make([]byte, testBufSize)
if _, err = client.Read(recvBuf); err != nil {
t.Fatal(err)
}
if !bytes.Equal(testBuf, recvBuf) {
t.Fatal(fmt.Errorf("Expected [%v] but got [%v]", testBuf, recvBuf))
}
}

36
vendor/github.com/docker/go-connections/proxy/proxy.go generated vendored Normal file
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@ -0,0 +1,36 @@
// Package proxy provides a network Proxy interface and implementations for TCP and UDP.
package proxy
import (
"fmt"
"net"
)
// Proxy defines the behavior of a proxy. It forwards traffic back and forth
// between two endpoints : the frontend and the backend.
// It can be used to do software port-mapping between two addresses.
// e.g. forward all traffic between the frontend (host) 127.0.0.1:3000
// to the backend (container) at 172.17.42.108:4000.
type Proxy interface {
// Run starts forwarding traffic back and forth between the front
// and back-end addresses.
Run()
// Close stops forwarding traffic and close both ends of the Proxy.
Close()
// FrontendAddr returns the address on which the proxy is listening.
FrontendAddr() net.Addr
// BackendAddr returns the proxied address.
BackendAddr() net.Addr
}
// NewProxy creates a Proxy according to the specified frontendAddr and backendAddr.
func NewProxy(frontendAddr, backendAddr net.Addr) (Proxy, error) {
switch frontendAddr.(type) {
case *net.UDPAddr:
return NewUDPProxy(frontendAddr.(*net.UDPAddr), backendAddr.(*net.UDPAddr))
case *net.TCPAddr:
return NewTCPProxy(frontendAddr.(*net.TCPAddr), backendAddr.(*net.TCPAddr))
default:
panic(fmt.Errorf("Unsupported protocol"))
}
}

31
vendor/github.com/docker/go-connections/proxy/stub_proxy.go generated vendored Normal file
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@ -0,0 +1,31 @@
package proxy
import (
"net"
)
// StubProxy is a proxy that is a stub (does nothing).
type StubProxy struct {
frontendAddr net.Addr
backendAddr net.Addr
}
// Run does nothing.
func (p *StubProxy) Run() {}
// Close does nothing.
func (p *StubProxy) Close() {}
// FrontendAddr returns the frontend address.
func (p *StubProxy) FrontendAddr() net.Addr { return p.frontendAddr }
// BackendAddr returns the backend address.
func (p *StubProxy) BackendAddr() net.Addr { return p.backendAddr }
// NewStubProxy creates a new StubProxy
func NewStubProxy(frontendAddr, backendAddr net.Addr) (Proxy, error) {
return &StubProxy{
frontendAddr: frontendAddr,
backendAddr: backendAddr,
}, nil
}

99
vendor/github.com/docker/go-connections/proxy/tcp_proxy.go generated vendored Normal file
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@ -0,0 +1,99 @@
package proxy
import (
"io"
"net"
"syscall"
"github.com/Sirupsen/logrus"
)
// TCPProxy is a proxy for TCP connections. It implements the Proxy interface to
// handle TCP traffic forwarding between the frontend and backend addresses.
type TCPProxy struct {
listener *net.TCPListener
frontendAddr *net.TCPAddr
backendAddr *net.TCPAddr
}
// NewTCPProxy creates a new TCPProxy.
func NewTCPProxy(frontendAddr, backendAddr *net.TCPAddr) (*TCPProxy, error) {
listener, err := net.ListenTCP("tcp", frontendAddr)
if err != nil {
return nil, err
}
// If the port in frontendAddr was 0 then ListenTCP will have a picked
// a port to listen on, hence the call to Addr to get that actual port:
return &TCPProxy{
listener: listener,
frontendAddr: listener.Addr().(*net.TCPAddr),
backendAddr: backendAddr,
}, nil
}
func (proxy *TCPProxy) clientLoop(client *net.TCPConn, quit chan bool) {
backend, err := net.DialTCP("tcp", nil, proxy.backendAddr)
if err != nil {
logrus.Printf("Can't forward traffic to backend tcp/%v: %s\n", proxy.backendAddr, err)
client.Close()
return
}
event := make(chan int64)
var broker = func(to, from *net.TCPConn) {
written, err := io.Copy(to, from)
if err != nil {
// If the socket we are writing to is shutdown with
// SHUT_WR, forward it to the other end of the pipe:
if err, ok := err.(*net.OpError); ok && err.Err == syscall.EPIPE {
from.CloseWrite()
}
}
to.CloseRead()
event <- written
}
go broker(client, backend)
go broker(backend, client)
var transferred int64
for i := 0; i < 2; i++ {
select {
case written := <-event:
transferred += written
case <-quit:
// Interrupt the two brokers and "join" them.
client.Close()
backend.Close()
for ; i < 2; i++ {
transferred += <-event
}
return
}
}
client.Close()
backend.Close()
}
// Run starts forwarding the traffic using TCP.
func (proxy *TCPProxy) Run() {
quit := make(chan bool)
defer close(quit)
for {
client, err := proxy.listener.Accept()
if err != nil {
logrus.Printf("Stopping proxy on tcp/%v for tcp/%v (%s)", proxy.frontendAddr, proxy.backendAddr, err)
return
}
go proxy.clientLoop(client.(*net.TCPConn), quit)
}
}
// Close stops forwarding the traffic.
func (proxy *TCPProxy) Close() { proxy.listener.Close() }
// FrontendAddr returns the TCP address on which the proxy is listening.
func (proxy *TCPProxy) FrontendAddr() net.Addr { return proxy.frontendAddr }
// BackendAddr returns the TCP proxied address.
func (proxy *TCPProxy) BackendAddr() net.Addr { return proxy.backendAddr }

169
vendor/github.com/docker/go-connections/proxy/udp_proxy.go generated vendored Normal file
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@ -0,0 +1,169 @@
package proxy
import (
"encoding/binary"
"net"
"strings"
"sync"
"syscall"
"time"
"github.com/Sirupsen/logrus"
)
const (
// UDPConnTrackTimeout is the timeout used for UDP connection tracking
UDPConnTrackTimeout = 90 * time.Second
// UDPBufSize is the buffer size for the UDP proxy
UDPBufSize = 65507
)
// A net.Addr where the IP is split into two fields so you can use it as a key
// in a map:
type connTrackKey struct {
IPHigh uint64
IPLow uint64
Port int
}
func newConnTrackKey(addr *net.UDPAddr) *connTrackKey {
if len(addr.IP) == net.IPv4len {
return &connTrackKey{
IPHigh: 0,
IPLow: uint64(binary.BigEndian.Uint32(addr.IP)),
Port: addr.Port,
}
}
return &connTrackKey{
IPHigh: binary.BigEndian.Uint64(addr.IP[:8]),
IPLow: binary.BigEndian.Uint64(addr.IP[8:]),
Port: addr.Port,
}
}
type connTrackMap map[connTrackKey]*net.UDPConn
// UDPProxy is proxy for which handles UDP datagrams. It implements the Proxy
// interface to handle UDP traffic forwarding between the frontend and backend
// addresses.
type UDPProxy struct {
listener *net.UDPConn
frontendAddr *net.UDPAddr
backendAddr *net.UDPAddr
connTrackTable connTrackMap
connTrackLock sync.Mutex
}
// NewUDPProxy creates a new UDPProxy.
func NewUDPProxy(frontendAddr, backendAddr *net.UDPAddr) (*UDPProxy, error) {
listener, err := net.ListenUDP("udp", frontendAddr)
if err != nil {
return nil, err
}
return &UDPProxy{
listener: listener,
frontendAddr: listener.LocalAddr().(*net.UDPAddr),
backendAddr: backendAddr,
connTrackTable: make(connTrackMap),
}, nil
}
func (proxy *UDPProxy) replyLoop(proxyConn *net.UDPConn, clientAddr *net.UDPAddr, clientKey *connTrackKey) {
defer func() {
proxy.connTrackLock.Lock()
delete(proxy.connTrackTable, *clientKey)
proxy.connTrackLock.Unlock()
proxyConn.Close()
}()
readBuf := make([]byte, UDPBufSize)
for {
proxyConn.SetReadDeadline(time.Now().Add(UDPConnTrackTimeout))
again:
read, err := proxyConn.Read(readBuf)
if err != nil {
if err, ok := err.(*net.OpError); ok && err.Err == syscall.ECONNREFUSED {
// This will happen if the last write failed
// (e.g: nothing is actually listening on the
// proxied port on the container), ignore it
// and continue until UDPConnTrackTimeout
// expires:
goto again
}
return
}
for i := 0; i != read; {
written, err := proxy.listener.WriteToUDP(readBuf[i:read], clientAddr)
if err != nil {
return
}
i += written
}
}
}
// Run starts forwarding the traffic using UDP.
func (proxy *UDPProxy) Run() {
readBuf := make([]byte, UDPBufSize)
for {
read, from, err := proxy.listener.ReadFromUDP(readBuf)
if err != nil {
// NOTE: Apparently ReadFrom doesn't return
// ECONNREFUSED like Read do (see comment in
// UDPProxy.replyLoop)
if !isClosedError(err) {
logrus.Printf("Stopping proxy on udp/%v for udp/%v (%s)", proxy.frontendAddr, proxy.backendAddr, err)
}
break
}
fromKey := newConnTrackKey(from)
proxy.connTrackLock.Lock()
proxyConn, hit := proxy.connTrackTable[*fromKey]
if !hit {
proxyConn, err = net.DialUDP("udp", nil, proxy.backendAddr)
if err != nil {
logrus.Printf("Can't proxy a datagram to udp/%s: %s\n", proxy.backendAddr, err)
proxy.connTrackLock.Unlock()
continue
}
proxy.connTrackTable[*fromKey] = proxyConn
go proxy.replyLoop(proxyConn, from, fromKey)
}
proxy.connTrackLock.Unlock()
for i := 0; i != read; {
written, err := proxyConn.Write(readBuf[i:read])
if err != nil {
logrus.Printf("Can't proxy a datagram to udp/%s: %s\n", proxy.backendAddr, err)
break
}
i += written
}
}
}
// Close stops forwarding the traffic.
func (proxy *UDPProxy) Close() {
proxy.listener.Close()
proxy.connTrackLock.Lock()
defer proxy.connTrackLock.Unlock()
for _, conn := range proxy.connTrackTable {
conn.Close()
}
}
// FrontendAddr returns the UDP address on which the proxy is listening.
func (proxy *UDPProxy) FrontendAddr() net.Addr { return proxy.frontendAddr }
// BackendAddr returns the proxied UDP address.
func (proxy *UDPProxy) BackendAddr() net.Addr { return proxy.backendAddr }
func isClosedError(err error) bool {
/* This comparison is ugly, but unfortunately, net.go doesn't export errClosing.
* See:
* http://golang.org/src/pkg/net/net.go
* https://code.google.com/p/go/issues/detail?id=4337
* https://groups.google.com/forum/#!msg/golang-nuts/0_aaCvBmOcM/SptmDyX1XJMJ
*/
return strings.HasSuffix(err.Error(), "use of closed network connection")
}

0
vendor/github.com/docker/go-connections/sockets/README.md generated vendored Normal file
View file

81
vendor/github.com/docker/go-connections/sockets/inmem_socket.go generated vendored Normal file
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@ -0,0 +1,81 @@
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)
}

39
vendor/github.com/docker/go-connections/sockets/inmem_socket_test.go generated vendored Normal file
View file

@ -0,0 +1,39 @@
package sockets
import "testing"
func TestInmemSocket(t *testing.T) {
l := NewInmemSocket("test", 0)
defer l.Close()
go func() {
for {
conn, err := l.Accept()
if err != nil {
return
}
conn.Write([]byte("hello"))
conn.Close()
}
}()
conn, err := l.Dial("test", "test")
if err != nil {
t.Fatal(err)
}
buf := make([]byte, 5)
_, err = conn.Read(buf)
if err != nil {
t.Fatal(err)
}
if string(buf) != "hello" {
t.Fatalf("expected `hello`, got %s", string(buf))
}
l.Close()
conn, err = l.Dial("test", "test")
if err != errClosed {
t.Fatalf("expected `errClosed` error, got %v", err)
}
}

51
vendor/github.com/docker/go-connections/sockets/proxy.go generated vendored Normal file
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@ -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
}

38
vendor/github.com/docker/go-connections/sockets/sockets.go generated vendored Normal file
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@ -0,0 +1,38 @@
// Package sockets provides helper functions to create and configure Unix or TCP sockets.
package sockets
import (
"errors"
"net"
"net/http"
"time"
)
// Why 32? See https://github.com/docker/docker/pull/8035.
const defaultTimeout = 32 * time.Second
// ErrProtocolNotAvailable is returned when a given transport protocol is not provided by the operating system.
var ErrProtocolNotAvailable = errors.New("protocol not available")
// 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":
return configureUnixTransport(tr, proto, addr)
case "npipe":
return configureNpipeTransport(tr, proto, addr)
default:
tr.Proxy = http.ProxyFromEnvironment
dialer, err := DialerFromEnvironment(&net.Dialer{
Timeout: defaultTimeout,
})
if err != nil {
return err
}
tr.Dial = dialer.Dial
}
return nil
}

35
vendor/github.com/docker/go-connections/sockets/sockets_unix.go generated vendored Normal file
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@ -0,0 +1,35 @@
// +build !windows
package sockets
import (
"fmt"
"net"
"net/http"
"syscall"
"time"
)
const maxUnixSocketPathSize = len(syscall.RawSockaddrUnix{}.Path)
func configureUnixTransport(tr *http.Transport, proto, addr string) error {
if len(addr) > maxUnixSocketPathSize {
return fmt.Errorf("Unix socket path %q is too long", addr)
}
// No need for compression in local communications.
tr.DisableCompression = true
tr.Dial = func(_, _ string) (net.Conn, error) {
return net.DialTimeout(proto, addr, defaultTimeout)
}
return nil
}
func configureNpipeTransport(tr *http.Transport, proto, addr string) error {
return ErrProtocolNotAvailable
}
// 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
}

27
vendor/github.com/docker/go-connections/sockets/sockets_windows.go generated vendored Normal file
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@ -0,0 +1,27 @@
package sockets
import (
"net"
"net/http"
"time"
"github.com/Microsoft/go-winio"
)
func configureUnixTransport(tr *http.Transport, proto, addr string) error {
return ErrProtocolNotAvailable
}
func configureNpipeTransport(tr *http.Transport, proto, addr string) error {
// No need for compression in local communications.
tr.DisableCompression = true
tr.Dial = func(_, _ string) (net.Conn, error) {
return DialPipe(addr, defaultTimeout)
}
return nil
}
// DialPipe connects to a Windows named pipe.
func DialPipe(addr string, timeout time.Duration) (net.Conn, error) {
return winio.DialPipe(addr, &timeout)
}

22
vendor/github.com/docker/go-connections/sockets/tcp_socket.go generated vendored Normal file
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@ -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
// 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
}

80
vendor/github.com/docker/go-connections/sockets/unix_socket.go generated vendored Normal file
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@ -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)
}

21
vendor/github.com/docker/go-connections/tlsconfig/certpool_go17.go generated vendored Normal file
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@ -0,0 +1,21 @@
// +build go1.7
package tlsconfig
import (
"crypto/x509"
"runtime"
"github.com/Sirupsen/logrus"
)
// SystemCertPool returns a copy of the system cert pool,
// returns an error if failed to load or empty pool on windows.
func SystemCertPool() (*x509.CertPool, error) {
certpool, err := x509.SystemCertPool()
if err != nil && runtime.GOOS == "windows" {
logrus.Warnf("Unable to use system certificate pool: %v", err)
return x509.NewCertPool(), nil
}
return certpool, err
}

16
vendor/github.com/docker/go-connections/tlsconfig/certpool_other.go generated vendored Normal file
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@ -0,0 +1,16 @@
// +build !go1.7
package tlsconfig
import (
"crypto/x509"
"github.com/Sirupsen/logrus"
)
// SystemCertPool returns an new empty cert pool,
// accessing system cert pool is supported in go 1.7
func SystemCertPool() (*x509.CertPool, error) {
logrus.Warn("Unable to use system certificate pool: requires building with go 1.7 or later")
return x509.NewCertPool(), nil
}

129
vendor/github.com/docker/go-connections/tlsconfig/config.go generated vendored Normal file
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// Package tlsconfig provides primitives to retrieve secure-enough TLS configurations for both clients and servers.
//
// As a reminder from https://golang.org/pkg/crypto/tls/#Config:
// A Config structure is used to configure a TLS client or server. After one has been passed to a TLS function it must not be modified.
// A Config may be reused; the tls package will also not modify it.
package tlsconfig
import (
"crypto/tls"
"crypto/x509"
"fmt"
"io/ioutil"
"os"
"github.com/Sirupsen/logrus"
)
// Options represents the information needed to create client and server TLS configurations.
type Options struct {
CAFile string
// If either CertFile or KeyFile is empty, Client() will not load them
// preventing the client from authenticating to the server.
// However, Server() requires them and will error out if they are empty.
CertFile string
KeyFile string
// client-only option
InsecureSkipVerify bool
// server-only option
ClientAuth tls.ClientAuthType
}
// Extra (server-side) accepted CBC cipher suites - will phase out in the future
var acceptedCBCCiphers = []uint16{
tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
tls.TLS_RSA_WITH_AES_256_CBC_SHA,
tls.TLS_RSA_WITH_AES_128_CBC_SHA,
}
// DefaultServerAcceptedCiphers should be uses by code which already has a crypto/tls
// options struct but wants to use a commonly accepted set of TLS cipher suites, with
// known weak algorithms removed.
var DefaultServerAcceptedCiphers = append(clientCipherSuites, acceptedCBCCiphers...)
// ServerDefault returns a secure-enough TLS configuration for the server TLS configuration.
func ServerDefault() *tls.Config {
return &tls.Config{
// Avoid fallback to SSL protocols < TLS1.0
MinVersion: tls.VersionTLS10,
PreferServerCipherSuites: true,
CipherSuites: DefaultServerAcceptedCiphers,
}
}
// ClientDefault returns a secure-enough TLS configuration for the client TLS configuration.
func ClientDefault() *tls.Config {
return &tls.Config{
// Prefer TLS1.2 as the client minimum
MinVersion: tls.VersionTLS12,
CipherSuites: clientCipherSuites,
}
}
// certPool returns an X.509 certificate pool from `caFile`, the certificate file.
func certPool(caFile string) (*x509.CertPool, error) {
// If we should verify the server, we need to load a trusted ca
certPool, err := SystemCertPool()
if err != nil {
return nil, fmt.Errorf("failed to read system certificates: %v", err)
}
pem, err := ioutil.ReadFile(caFile)
if err != nil {
return nil, fmt.Errorf("could not read CA certificate %q: %v", caFile, err)
}
if !certPool.AppendCertsFromPEM(pem) {
return nil, fmt.Errorf("failed to append certificates from PEM file: %q", caFile)
}
logrus.Debugf("Trusting %d certs", len(certPool.Subjects()))
return certPool, nil
}
// Client returns a TLS configuration meant to be used by a client.
func Client(options Options) (*tls.Config, error) {
tlsConfig := ClientDefault()
tlsConfig.InsecureSkipVerify = options.InsecureSkipVerify
if !options.InsecureSkipVerify && options.CAFile != "" {
CAs, err := certPool(options.CAFile)
if err != nil {
return nil, err
}
tlsConfig.RootCAs = CAs
}
if options.CertFile != "" || options.KeyFile != "" {
tlsCert, err := tls.LoadX509KeyPair(options.CertFile, options.KeyFile)
if err != nil {
return nil, fmt.Errorf("Could not load X509 key pair: %v. Make sure the key is not encrypted", err)
}
tlsConfig.Certificates = []tls.Certificate{tlsCert}
}
return tlsConfig, nil
}
// Server returns a TLS configuration meant to be used by a server.
func Server(options Options) (*tls.Config, error) {
tlsConfig := ServerDefault()
tlsConfig.ClientAuth = options.ClientAuth
tlsCert, err := tls.LoadX509KeyPair(options.CertFile, options.KeyFile)
if err != nil {
if os.IsNotExist(err) {
return nil, fmt.Errorf("Could not load X509 key pair (cert: %q, key: %q): %v", options.CertFile, options.KeyFile, err)
}
return nil, fmt.Errorf("Error reading X509 key pair (cert: %q, key: %q): %v. Make sure the key is not encrypted.", options.CertFile, options.KeyFile, err)
}
tlsConfig.Certificates = []tls.Certificate{tlsCert}
if options.ClientAuth >= tls.VerifyClientCertIfGiven {
CAs, err := certPool(options.CAFile)
if err != nil {
return nil, err
}
tlsConfig.ClientCAs = CAs
}
return tlsConfig, nil
}

17
vendor/github.com/docker/go-connections/tlsconfig/config_client_ciphers.go generated vendored Normal file
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@ -0,0 +1,17 @@
// +build go1.5
// Package tlsconfig provides primitives to retrieve secure-enough TLS configurations for both clients and servers.
//
package tlsconfig
import (
"crypto/tls"
)
// Client TLS cipher suites (dropping CBC ciphers for client preferred suite set)
var clientCipherSuites = []uint16{
tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
}

15
vendor/github.com/docker/go-connections/tlsconfig/config_legacy_client_ciphers.go generated vendored Normal file
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@ -0,0 +1,15 @@
// +build !go1.5
// Package tlsconfig provides primitives to retrieve secure-enough TLS configurations for both clients and servers.
//
package tlsconfig
import (
"crypto/tls"
)
// Client TLS cipher suites (dropping CBC ciphers for client preferred suite set)
var clientCipherSuites = []uint16{
tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
}

391
vendor/github.com/docker/go-connections/tlsconfig/config_test.go generated vendored Normal file
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@ -0,0 +1,391 @@
package tlsconfig
import (
"bytes"
"crypto"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/rsa"
"crypto/tls"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
"io"
"io/ioutil"
"math/big"
"os"
"path/filepath"
"reflect"
"testing"
"time"
)
var certTemplate = x509.Certificate{
SerialNumber: big.NewInt(199999),
Subject: pkix.Name{
CommonName: "test",
},
NotBefore: time.Now().AddDate(-1, 1, 1),
NotAfter: time.Now().AddDate(1, 1, 1),
KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageCodeSigning},
BasicConstraintsValid: true,
}
func generateCertificate(t *testing.T, signer crypto.Signer, out io.Writer) {
derBytes, err := x509.CreateCertificate(rand.Reader, &certTemplate, &certTemplate, signer.Public(), signer)
if err != nil {
t.Fatal("Unable to generate a certificate", err.Error())
}
if err = pem.Encode(out, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes}); err != nil {
t.Fatal("Unable to write cert to file", err.Error())
}
}
// generates a multiple-certificate file with both RSA and ECDSA certs and
// returns the filename so that cleanup can be deferred.
func generateMultiCert(t *testing.T, tempDir string) string {
certOut, err := os.Create(filepath.Join(tempDir, "multi"))
if err != nil {
t.Fatal("Unable to create file to write multi-cert to", err.Error())
}
defer certOut.Close()
rsaKey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
t.Fatal("Unable to generate RSA key for multi-cert", err.Error())
}
ecKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
if err != nil {
t.Fatal("Unable to generate ECDSA key for multi-cert", err.Error())
}
for _, signer := range []crypto.Signer{rsaKey, ecKey} {
generateCertificate(t, signer, certOut)
}
return certOut.Name()
}
func generateCertAndKey(t *testing.T, tempDir string) (string, string) {
rsaKey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
t.Fatal("Unable to generate RSA key", err.Error())
}
keyBytes := x509.MarshalPKCS1PrivateKey(rsaKey)
keyOut, err := os.Create(filepath.Join(tempDir, "key"))
if err != nil {
t.Fatal("Unable to create file to write key to", err.Error())
}
defer keyOut.Close()
if err = pem.Encode(keyOut, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: keyBytes}); err != nil {
t.Fatal("Unable to write key to file", err.Error())
}
certOut, err := os.Create(filepath.Join(tempDir, "cert"))
if err != nil {
t.Fatal("Unable to create file to write cert to", err.Error())
}
defer certOut.Close()
generateCertificate(t, rsaKey, certOut)
return keyOut.Name(), certOut.Name()
}
func makeTempDir(t *testing.T) string {
tempDir, err := ioutil.TempDir("", "tlsconfig-test")
if err != nil {
t.Fatal("Could not make a temporary directory", err.Error())
}
return tempDir
}
// If the cert files and directory are provided but are invalid, an error is
// returned.
func TestConfigServerTLSFailsIfUnableToLoadCerts(t *testing.T) {
tempDir := makeTempDir(t)
defer os.RemoveAll(tempDir)
key, cert := generateCertAndKey(t, tempDir)
ca := generateMultiCert(t, tempDir)
tempFile, err := ioutil.TempFile("", "cert-test")
if err != nil {
t.Fatal("Unable to create temporary empty file")
}
defer os.RemoveAll(tempFile.Name())
tempFile.Close()
for _, badFile := range []string{"not-a-file", tempFile.Name()} {
for i := 0; i < 3; i++ {
files := []string{cert, key, ca}
files[i] = badFile
result, err := Server(Options{
CertFile: files[0],
KeyFile: files[1],
CAFile: files[2],
ClientAuth: tls.VerifyClientCertIfGiven,
})
if err == nil || result != nil {
t.Fatal("Expected a non-real file to error and return a nil TLS config")
}
}
}
}
// If server cert and key are provided and client auth and client CA are not
// set, a tls config with only the server certs will be returned.
func TestConfigServerTLSServerCertsOnly(t *testing.T) {
tempDir := makeTempDir(t)
defer os.RemoveAll(tempDir)
key, cert := generateCertAndKey(t, tempDir)
keypair, err := tls.LoadX509KeyPair(cert, key)
if err != nil {
t.Fatal("Unable to load the generated cert and key")
}
tlsConfig, err := Server(Options{
CertFile: cert,
KeyFile: key,
})
if err != nil || tlsConfig == nil {
t.Fatal("Unable to configure server TLS", err)
}
if len(tlsConfig.Certificates) != 1 {
t.Fatal("Unexpected server certificates")
}
if len(tlsConfig.Certificates[0].Certificate) != len(keypair.Certificate) {
t.Fatal("Unexpected server certificates")
}
for i, cert := range tlsConfig.Certificates[0].Certificate {
if !bytes.Equal(cert, keypair.Certificate[i]) {
t.Fatal("Unexpected server certificates")
}
}
if !reflect.DeepEqual(tlsConfig.CipherSuites, DefaultServerAcceptedCiphers) {
t.Fatal("Unexpected server cipher suites")
}
if !tlsConfig.PreferServerCipherSuites {
t.Fatal("Expected server to prefer cipher suites")
}
if tlsConfig.MinVersion != tls.VersionTLS10 {
t.Fatal("Unexpected server TLS version")
}
}
// If client CA is provided, it will only be used if the client auth is >=
// VerifyClientCertIfGiven
func TestConfigServerTLSClientCANotSetIfClientAuthTooLow(t *testing.T) {
tempDir := makeTempDir(t)
defer os.RemoveAll(tempDir)
key, cert := generateCertAndKey(t, tempDir)
ca := generateMultiCert(t, tempDir)
tlsConfig, err := Server(Options{
CertFile: cert,
KeyFile: key,
ClientAuth: tls.RequestClientCert,
CAFile: ca,
})
if err != nil || tlsConfig == nil {
t.Fatal("Unable to configure server TLS", err)
}
if len(tlsConfig.Certificates) != 1 {
t.Fatal("Unexpected server certificates")
}
if tlsConfig.ClientAuth != tls.RequestClientCert {
t.Fatal("ClientAuth was not set to what was in the options")
}
if tlsConfig.ClientCAs != nil {
t.Fatalf("Client CAs should never have been set")
}
}
// If client CA is provided, it will only be used if the client auth is >=
// VerifyClientCertIfGiven
func TestConfigServerTLSClientCASet(t *testing.T) {
tempDir := makeTempDir(t)
defer os.RemoveAll(tempDir)
key, cert := generateCertAndKey(t, tempDir)
ca := generateMultiCert(t, tempDir)
tlsConfig, err := Server(Options{
CertFile: cert,
KeyFile: key,
ClientAuth: tls.VerifyClientCertIfGiven,
CAFile: ca,
})
if err != nil || tlsConfig == nil {
t.Fatal("Unable to configure server TLS", err)
}
if len(tlsConfig.Certificates) != 1 {
t.Fatal("Unexpected server certificates")
}
if tlsConfig.ClientAuth != tls.VerifyClientCertIfGiven {
t.Fatal("ClientAuth was not set to what was in the options")
}
if tlsConfig.ClientCAs == nil || len(tlsConfig.ClientCAs.Subjects()) != 2 {
t.Fatalf("Client CAs were never set correctly")
}
}
// The root CA is never set if InsecureSkipBoolean is set to true, but the
// default client options are set
func TestConfigClientTLSNoVerify(t *testing.T) {
tempDir := makeTempDir(t)
defer os.RemoveAll(tempDir)
ca := generateMultiCert(t, tempDir)
tlsConfig, err := Client(Options{CAFile: ca, InsecureSkipVerify: true})
if err != nil || tlsConfig == nil {
t.Fatal("Unable to configure client TLS", err)
}
if tlsConfig.RootCAs != nil {
t.Fatal("Should not have set Root CAs", err)
}
if !reflect.DeepEqual(tlsConfig.CipherSuites, clientCipherSuites) {
t.Fatal("Unexpected client cipher suites")
}
if tlsConfig.MinVersion != tls.VersionTLS12 {
t.Fatal("Unexpected client TLS version")
}
if tlsConfig.Certificates != nil {
t.Fatal("Somehow client certificates were set")
}
}
// The root CA is never set if InsecureSkipBoolean is set to false and root CA
// is not provided.
func TestConfigClientTLSNoRoot(t *testing.T) {
tlsConfig, err := Client(Options{})
if err != nil || tlsConfig == nil {
t.Fatal("Unable to configure client TLS", err)
}
if tlsConfig.RootCAs != nil {
t.Fatal("Should not have set Root CAs", err)
}
if !reflect.DeepEqual(tlsConfig.CipherSuites, clientCipherSuites) {
t.Fatal("Unexpected client cipher suites")
}
if tlsConfig.MinVersion != tls.VersionTLS12 {
t.Fatal("Unexpected client TLS version")
}
if tlsConfig.Certificates != nil {
t.Fatal("Somehow client certificates were set")
}
}
// The RootCA is set if the file is provided and InsecureSkipVerify is false
func TestConfigClientTLSRootCAFileWithOneCert(t *testing.T) {
tempDir := makeTempDir(t)
defer os.RemoveAll(tempDir)
ca := generateMultiCert(t, tempDir)
tlsConfig, err := Client(Options{CAFile: ca})
if err != nil || tlsConfig == nil {
t.Fatal("Unable to configure client TLS", err)
}
if tlsConfig.RootCAs == nil || len(tlsConfig.RootCAs.Subjects()) != 2 {
t.Fatal("Root CAs not set properly", err)
}
if tlsConfig.Certificates != nil {
t.Fatal("Somehow client certificates were set")
}
}
// An error is returned if a root CA is provided but the file doesn't exist.
func TestConfigClientTLSNonexistentRootCAFile(t *testing.T) {
tlsConfig, err := Client(Options{CAFile: "nonexistent"})
if err == nil || tlsConfig != nil {
t.Fatal("Should not have been able to configure client TLS", err)
}
}
// An error is returned if either the client cert or the key are provided
// but invalid or blank.
func TestConfigClientTLSClientCertOrKeyInvalid(t *testing.T) {
tempDir := makeTempDir(t)
defer os.RemoveAll(tempDir)
key, cert := generateCertAndKey(t, tempDir)
tempFile, err := ioutil.TempFile("", "cert-test")
if err != nil {
t.Fatal("Unable to create temporary empty file")
}
defer os.Remove(tempFile.Name())
tempFile.Close()
for i := 0; i < 2; i++ {
for _, invalid := range []string{"not-a-file", "", tempFile.Name()} {
files := []string{cert, key}
files[i] = invalid
tlsConfig, err := Client(Options{CertFile: files[0], KeyFile: files[1]})
if err == nil || tlsConfig != nil {
t.Fatal("Should not have been able to configure client TLS", err)
}
}
}
}
// The certificate is set if the client cert and client key are provided and
// valid.
func TestConfigClientTLSValidClientCertAndKey(t *testing.T) {
tempDir := makeTempDir(t)
defer os.RemoveAll(tempDir)
key, cert := generateCertAndKey(t, tempDir)
keypair, err := tls.LoadX509KeyPair(cert, key)
if err != nil {
t.Fatal("Unable to load the generated cert and key")
}
tlsConfig, err := Client(Options{CertFile: cert, KeyFile: key})
if err != nil || tlsConfig == nil {
t.Fatal("Unable to configure client TLS", err)
}
if len(tlsConfig.Certificates) != 1 {
t.Fatal("Unexpected client certificates")
}
if len(tlsConfig.Certificates[0].Certificate) != len(keypair.Certificate) {
t.Fatal("Unexpected client certificates")
}
for i, cert := range tlsConfig.Certificates[0].Certificate {
if !bytes.Equal(cert, keypair.Certificate[i]) {
t.Fatal("Unexpected client certificates")
}
}
if tlsConfig.RootCAs != nil {
t.Fatal("Root CAs should not have been set", err)
}
}