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Merge pull request #13375 from tiborvass/distribution-refactor

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Vendor distribution client v2
This commit is contained in:
David Calavera 2015-07-16 11:54:08 -07:00
commit 0920d8e1e2
11 changed files with 340 additions and 639 deletions
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2
docs/auth.go
View file

@ -125,7 +125,7 @@ func loginV1(authConfig *cliconfig.AuthConfig, registryEndpoint *Endpoint) (stri
return "", fmt.Errorf("Server Error: Server Address not set.")
}
loginAgainstOfficialIndex := serverAddress == IndexServerAddress()
loginAgainstOfficialIndex := serverAddress == INDEXSERVER
// to avoid sending the server address to the server it should be removed before being marshalled
authCopy := *authConfig

10
docs/auth_test.go
View file

@ -37,7 +37,7 @@ func setupTempConfigFile() (*cliconfig.ConfigFile, error) {
root = filepath.Join(root, cliconfig.CONFIGFILE)
configFile := cliconfig.NewConfigFile(root)
for _, registry := range []string{"testIndex", IndexServerAddress()} {
for _, registry := range []string{"testIndex", INDEXSERVER} {
configFile.AuthConfigs[registry] = cliconfig.AuthConfig{
Username: "docker-user",
Password: "docker-pass",
@ -82,7 +82,7 @@ func TestResolveAuthConfigIndexServer(t *testing.T) {
}
defer os.RemoveAll(configFile.Filename())
indexConfig := configFile.AuthConfigs[IndexServerAddress()]
indexConfig := configFile.AuthConfigs[INDEXSERVER]
officialIndex := &IndexInfo{
Official: true,
@ -92,10 +92,10 @@ func TestResolveAuthConfigIndexServer(t *testing.T) {
}
resolved := ResolveAuthConfig(configFile, officialIndex)
assertEqual(t, resolved, indexConfig, "Expected ResolveAuthConfig to return IndexServerAddress()")
assertEqual(t, resolved, indexConfig, "Expected ResolveAuthConfig to return INDEXSERVER")
resolved = ResolveAuthConfig(configFile, privateIndex)
assertNotEqual(t, resolved, indexConfig, "Expected ResolveAuthConfig to not return IndexServerAddress()")
assertNotEqual(t, resolved, indexConfig, "Expected ResolveAuthConfig to not return INDEXSERVER")
}
func TestResolveAuthConfigFullURL(t *testing.T) {
@ -120,7 +120,7 @@ func TestResolveAuthConfigFullURL(t *testing.T) {
Password: "baz-pass",
Email: "baz@example.com",
}
configFile.AuthConfigs[IndexServerAddress()] = officialAuth
configFile.AuthConfigs[INDEXSERVER] = officialAuth
expectedAuths := map[string]cliconfig.AuthConfig{
"registry.example.com": registryAuth,

37
docs/config.go
View file

@ -21,9 +21,16 @@ type Options struct {
}
const (
DEFAULT_NAMESPACE = "docker.io"
DEFAULT_V2_REGISTRY = "https://registry-1.docker.io"
DEFAULT_REGISTRY_VERSION_HEADER = "Docker-Distribution-Api-Version"
DEFAULT_V1_REGISTRY = "https://index.docker.io"
CERTS_DIR = "/etc/docker/certs.d"
// Only used for user auth + account creation
INDEXSERVER = "https://index.docker.io/v1/"
REGISTRYSERVER = "https://registry-1.docker.io/v2/"
REGISTRYSERVER = DEFAULT_V2_REGISTRY
INDEXSERVER = DEFAULT_V1_REGISTRY + "/v1/"
INDEXNAME = "docker.io"
// INDEXSERVER = "https://registry-stage.hub.docker.com/v1/"
@ -34,14 +41,6 @@ var (
emptyServiceConfig = NewServiceConfig(nil)
)
func IndexServerAddress() string {
return INDEXSERVER
}
func IndexServerName() string {
return INDEXNAME
}
// InstallFlags adds command-line options to the top-level flag parser for
// the current process.
func (options *Options) InstallFlags() {
@ -72,6 +71,7 @@ func (ipnet *netIPNet) UnmarshalJSON(b []byte) (err error) {
type ServiceConfig struct {
InsecureRegistryCIDRs []*netIPNet `json:"InsecureRegistryCIDRs"`
IndexConfigs map[string]*IndexInfo `json:"IndexConfigs"`
Mirrors []string
}
// NewServiceConfig returns a new instance of ServiceConfig
@ -93,6 +93,9 @@ func NewServiceConfig(options *Options) *ServiceConfig {
config := &ServiceConfig{
InsecureRegistryCIDRs: make([]*netIPNet, 0),
IndexConfigs: make(map[string]*IndexInfo, 0),
// Hack: Bypass setting the mirrors to IndexConfigs since they are going away
// and Mirrors are only for the official registry anyways.
Mirrors: options.Mirrors.GetAll(),
}
// Split --insecure-registry into CIDR and registry-specific settings.
for _, r := range options.InsecureRegistries.GetAll() {
@ -113,9 +116,9 @@ func NewServiceConfig(options *Options) *ServiceConfig {
}
// Configure public registry.
config.IndexConfigs[IndexServerName()] = &IndexInfo{
Name: IndexServerName(),
Mirrors: options.Mirrors.GetAll(),
config.IndexConfigs[INDEXNAME] = &IndexInfo{
Name: INDEXNAME,
Mirrors: config.Mirrors,
Secure: true,
Official: true,
}
@ -193,8 +196,8 @@ func ValidateMirror(val string) (string, error) {
// ValidateIndexName validates an index name.
func ValidateIndexName(val string) (string, error) {
// 'index.docker.io' => 'docker.io'
if val == "index."+IndexServerName() {
val = IndexServerName()
if val == "index."+INDEXNAME {
val = INDEXNAME
}
if strings.HasPrefix(val, "-") || strings.HasSuffix(val, "-") {
return "", fmt.Errorf("Invalid index name (%s). Cannot begin or end with a hyphen.", val)
@ -264,7 +267,7 @@ func (config *ServiceConfig) NewIndexInfo(indexName string) (*IndexInfo, error)
// index as the AuthConfig key, and uses the (host)name[:port] for private indexes.
func (index *IndexInfo) GetAuthConfigKey() string {
if index.Official {
return IndexServerAddress()
return INDEXSERVER
}
return index.Name
}
@ -277,7 +280,7 @@ func splitReposName(reposName string) (string, string) {
!strings.Contains(nameParts[0], ":") && nameParts[0] != "localhost") {
// This is a Docker Index repos (ex: samalba/hipache or ubuntu)
// 'docker.io'
indexName = IndexServerName()
indexName = INDEXNAME
remoteName = reposName
} else {
indexName = nameParts[0]

19
docs/endpoint.go
View file

@ -1,6 +1,7 @@
package registry
import (
"crypto/tls"
"encoding/json"
"fmt"
"io/ioutil"
@ -11,7 +12,8 @@ import (
"github.com/Sirupsen/logrus"
"github.com/docker/distribution/registry/api/v2"
"github.com/docker/docker/pkg/transport"
"github.com/docker/distribution/registry/client/transport"
"github.com/docker/docker/pkg/tlsconfig"
)
// for mocking in unit tests
@ -44,7 +46,9 @@ func scanForAPIVersion(address string) (string, APIVersion) {
// NewEndpoint parses the given address to return a registry endpoint.
func NewEndpoint(index *IndexInfo, metaHeaders http.Header) (*Endpoint, error) {
// *TODO: Allow per-registry configuration of endpoints.
endpoint, err := newEndpoint(index.GetAuthConfigKey(), index.Secure, metaHeaders)
tlsConfig := tlsconfig.ServerDefault
tlsConfig.InsecureSkipVerify = !index.Secure
endpoint, err := newEndpoint(index.GetAuthConfigKey(), &tlsConfig, metaHeaders)
if err != nil {
return nil, err
}
@ -82,7 +86,7 @@ func validateEndpoint(endpoint *Endpoint) error {
return nil
}
func newEndpoint(address string, secure bool, metaHeaders http.Header) (*Endpoint, error) {
func newEndpoint(address string, tlsConfig *tls.Config, metaHeaders http.Header) (*Endpoint, error) {
var (
endpoint = new(Endpoint)
trimmedAddress string
@ -93,13 +97,16 @@ func newEndpoint(address string, secure bool, metaHeaders http.Header) (*Endpoin
address = "https://" + address
}
endpoint.IsSecure = (tlsConfig == nil || !tlsConfig.InsecureSkipVerify)
trimmedAddress, endpoint.Version = scanForAPIVersion(address)
if endpoint.URL, err = url.Parse(trimmedAddress); err != nil {
return nil, err
}
endpoint.IsSecure = secure
tr := NewTransport(ConnectTimeout, endpoint.IsSecure)
// TODO(tiborvass): make sure a ConnectTimeout transport is used
tr := NewTransport(tlsConfig)
endpoint.client = HTTPClient(transport.NewTransport(tr, DockerHeaders(metaHeaders)...))
return endpoint, nil
}
@ -166,7 +173,7 @@ func (e *Endpoint) Ping() (RegistryInfo, error) {
func (e *Endpoint) pingV1() (RegistryInfo, error) {
logrus.Debugf("attempting v1 ping for registry endpoint %s", e)
if e.String() == IndexServerAddress() {
if e.String() == INDEXSERVER {
// Skip the check, we know this one is valid
// (and we never want to fallback to http in case of error)
return RegistryInfo{Standalone: false}, nil

6
docs/endpoint_test.go
View file

@ -12,14 +12,14 @@ func TestEndpointParse(t *testing.T) {
str string
expected string
}{
{IndexServerAddress(), IndexServerAddress()},
{INDEXSERVER, INDEXSERVER},
{"http://0.0.0.0:5000/v1/", "http://0.0.0.0:5000/v1/"},
{"http://0.0.0.0:5000/v2/", "http://0.0.0.0:5000/v2/"},
{"http://0.0.0.0:5000", "http://0.0.0.0:5000/v0/"},
{"0.0.0.0:5000", "https://0.0.0.0:5000/v0/"},
}
for _, td := range testData {
e, err := newEndpoint(td.str, false, nil)
e, err := newEndpoint(td.str, nil, nil)
if err != nil {
t.Errorf("%q: %s", td.str, err)
}
@ -60,7 +60,7 @@ func TestValidateEndpointAmbiguousAPIVersion(t *testing.T) {
testEndpoint := Endpoint{
URL: testServerURL,
Version: APIVersionUnknown,
client: HTTPClient(NewTransport(ConnectTimeout, false)),
client: HTTPClient(NewTransport(nil)),
}
if err = validateEndpoint(&testEndpoint); err != nil {

196
docs/registry.go
View file

@ -2,26 +2,21 @@ package registry
import (
"crypto/tls"
"crypto/x509"
"errors"
"fmt"
"io/ioutil"
"net"
"net/http"
"os"
"path"
"path/filepath"
"runtime"
"strings"
"sync"
"time"
"github.com/Sirupsen/logrus"
"github.com/docker/distribution/registry/api/errcode"
"github.com/docker/distribution/registry/api/v2"
"github.com/docker/distribution/registry/client/transport"
"github.com/docker/docker/autogen/dockerversion"
"github.com/docker/docker/pkg/parsers/kernel"
"github.com/docker/docker/pkg/timeoutconn"
"github.com/docker/docker/pkg/tlsconfig"
"github.com/docker/docker/pkg/transport"
"github.com/docker/docker/pkg/useragent"
)
@ -57,135 +52,13 @@ func init() {
dockerUserAgent = useragent.AppendVersions("", httpVersion...)
}
type httpsRequestModifier struct {
mu sync.Mutex
tlsConfig *tls.Config
}
// DRAGONS(tiborvass): If someone wonders why do we set tlsconfig in a roundtrip,
// it's because it's so as to match the current behavior in master: we generate the
// certpool on every-goddam-request. It's not great, but it allows people to just put
// the certs in /etc/docker/certs.d/.../ and let docker "pick it up" immediately. Would
// prefer an fsnotify implementation, but that was out of scope of my refactoring.
func (m *httpsRequestModifier) ModifyRequest(req *http.Request) error {
var (
roots *x509.CertPool
certs []tls.Certificate
hostDir string
)
if req.URL.Scheme == "https" {
hasFile := func(files []os.FileInfo, name string) bool {
for _, f := range files {
if f.Name() == name {
return true
}
}
return false
}
if runtime.GOOS == "windows" {
hostDir = path.Join(os.TempDir(), "/docker/certs.d", req.URL.Host)
} else {
hostDir = path.Join("/etc/docker/certs.d", req.URL.Host)
}
logrus.Debugf("hostDir: %s", hostDir)
fs, err := ioutil.ReadDir(hostDir)
if err != nil && !os.IsNotExist(err) {
return nil
}
for _, f := range fs {
if strings.HasSuffix(f.Name(), ".crt") {
if roots == nil {
roots = x509.NewCertPool()
}
logrus.Debugf("crt: %s", hostDir+"/"+f.Name())
data, err := ioutil.ReadFile(filepath.Join(hostDir, f.Name()))
if err != nil {
return err
}
roots.AppendCertsFromPEM(data)
}
if strings.HasSuffix(f.Name(), ".cert") {
certName := f.Name()
keyName := certName[:len(certName)-5] + ".key"
logrus.Debugf("cert: %s", hostDir+"/"+f.Name())
if !hasFile(fs, keyName) {
return fmt.Errorf("Missing key %s for certificate %s", keyName, certName)
}
cert, err := tls.LoadX509KeyPair(filepath.Join(hostDir, certName), path.Join(hostDir, keyName))
if err != nil {
return err
}
certs = append(certs, cert)
}
if strings.HasSuffix(f.Name(), ".key") {
keyName := f.Name()
certName := keyName[:len(keyName)-4] + ".cert"
logrus.Debugf("key: %s", hostDir+"/"+f.Name())
if !hasFile(fs, certName) {
return fmt.Errorf("Missing certificate %s for key %s", certName, keyName)
}
}
}
m.mu.Lock()
m.tlsConfig.RootCAs = roots
m.tlsConfig.Certificates = certs
m.mu.Unlock()
}
return nil
}
func NewTransport(timeout TimeoutType, secure bool) http.RoundTripper {
tlsConfig := &tls.Config{
// Avoid fallback to SSL protocols < TLS1.0
MinVersion: tls.VersionTLS10,
InsecureSkipVerify: !secure,
CipherSuites: tlsconfig.DefaultServerAcceptedCiphers,
}
tr := &http.Transport{
DisableKeepAlives: true,
Proxy: http.ProxyFromEnvironment,
TLSClientConfig: tlsConfig,
}
switch timeout {
case ConnectTimeout:
tr.Dial = func(proto string, addr string) (net.Conn, error) {
// Set the connect timeout to 30 seconds to allow for slower connection
// times...
d := net.Dialer{Timeout: 30 * time.Second, DualStack: true}
conn, err := d.Dial(proto, addr)
if err != nil {
return nil, err
}
// Set the recv timeout to 10 seconds
conn.SetDeadline(time.Now().Add(10 * time.Second))
return conn, nil
}
case ReceiveTimeout:
tr.Dial = func(proto string, addr string) (net.Conn, error) {
d := net.Dialer{DualStack: true}
conn, err := d.Dial(proto, addr)
if err != nil {
return nil, err
}
conn = timeoutconn.New(conn, 1*time.Minute)
return conn, nil
func hasFile(files []os.FileInfo, name string) bool {
for _, f := range files {
if f.Name() == name {
return true
}
}
if secure {
// note: httpsTransport also handles http transport
// but for HTTPS, it sets up the certs
return transport.NewTransport(tr, &httpsRequestModifier{tlsConfig: tlsConfig})
}
return tr
return false
}
// DockerHeaders returns request modifiers that ensure requests have
@ -202,10 +75,6 @@ func DockerHeaders(metaHeaders http.Header) []transport.RequestModifier {
}
func HTTPClient(transport http.RoundTripper) *http.Client {
if transport == nil {
transport = NewTransport(ConnectTimeout, true)
}
return &http.Client{
Transport: transport,
CheckRedirect: AddRequiredHeadersToRedirectedRequests,
@ -245,3 +114,52 @@ func AddRequiredHeadersToRedirectedRequests(req *http.Request, via []*http.Reque
}
return nil
}
func shouldV2Fallback(err errcode.Error) bool {
logrus.Debugf("v2 error: %T %v", err, err)
switch err.Code {
case v2.ErrorCodeUnauthorized, v2.ErrorCodeManifestUnknown:
return true
}
return false
}
type ErrNoSupport struct{ Err error }
func (e ErrNoSupport) Error() string {
if e.Err == nil {
return "not supported"
}
return e.Err.Error()
}
func ContinueOnError(err error) bool {
switch v := err.(type) {
case errcode.Errors:
return ContinueOnError(v[0])
case ErrNoSupport:
return ContinueOnError(v.Err)
case errcode.Error:
return shouldV2Fallback(v)
}
return false
}
func NewTransport(tlsConfig *tls.Config) *http.Transport {
if tlsConfig == nil {
var cfg = tlsconfig.ServerDefault
tlsConfig = &cfg
}
return &http.Transport{
Proxy: http.ProxyFromEnvironment,
Dial: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
DualStack: true,
}).Dial,
TLSHandshakeTimeout: 10 * time.Second,
TLSClientConfig: tlsConfig,
// TODO(dmcgowan): Call close idle connections when complete and use keep alive
DisableKeepAlives: true,
}
}

2
docs/registry_mock_test.go
View file

@ -165,7 +165,7 @@ func makeHttpsIndex(req string) *IndexInfo {
func makePublicIndex() *IndexInfo {
index := &IndexInfo{
Name: IndexServerAddress(),
Name: INDEXSERVER,
Secure: true,
Official: true,
}

70
docs/registry_test.go
View file

@ -8,8 +8,8 @@ import (
"strings"
"testing"
"github.com/docker/distribution/registry/client/transport"
"github.com/docker/docker/cliconfig"
"github.com/docker/docker/pkg/transport"
)
var (
@ -27,7 +27,7 @@ func spawnTestRegistrySession(t *testing.T) *Session {
if err != nil {
t.Fatal(err)
}
var tr http.RoundTripper = debugTransport{NewTransport(ReceiveTimeout, endpoint.IsSecure), t.Log}
var tr http.RoundTripper = debugTransport{NewTransport(nil), t.Log}
tr = transport.NewTransport(AuthTransport(tr, authConfig, false), DockerHeaders(nil)...)
client := HTTPClient(tr)
r, err := NewSession(client, authConfig, endpoint)
@ -332,7 +332,7 @@ func TestParseRepositoryInfo(t *testing.T) {
expectedRepoInfos := map[string]RepositoryInfo{
"fooo/bar": {
Index: &IndexInfo{
Name: IndexServerName(),
Name: INDEXNAME,
Official: true,
},
RemoteName: "fooo/bar",
@ -342,7 +342,7 @@ func TestParseRepositoryInfo(t *testing.T) {
},
"library/ubuntu": {
Index: &IndexInfo{
Name: IndexServerName(),
Name: INDEXNAME,
Official: true,
},
RemoteName: "library/ubuntu",
@ -352,7 +352,7 @@ func TestParseRepositoryInfo(t *testing.T) {
},
"nonlibrary/ubuntu": {
Index: &IndexInfo{
Name: IndexServerName(),
Name: INDEXNAME,
Official: true,
},
RemoteName: "nonlibrary/ubuntu",
@ -362,7 +362,7 @@ func TestParseRepositoryInfo(t *testing.T) {
},
"ubuntu": {
Index: &IndexInfo{
Name: IndexServerName(),
Name: INDEXNAME,
Official: true,
},
RemoteName: "library/ubuntu",
@ -372,7 +372,7 @@ func TestParseRepositoryInfo(t *testing.T) {
},
"other/library": {
Index: &IndexInfo{
Name: IndexServerName(),
Name: INDEXNAME,
Official: true,
},
RemoteName: "other/library",
@ -480,9 +480,9 @@ func TestParseRepositoryInfo(t *testing.T) {
CanonicalName: "localhost/privatebase",
Official: false,
},
IndexServerName() + "/public/moonbase": {
INDEXNAME + "/public/moonbase": {
Index: &IndexInfo{
Name: IndexServerName(),
Name: INDEXNAME,
Official: true,
},
RemoteName: "public/moonbase",
@ -490,19 +490,9 @@ func TestParseRepositoryInfo(t *testing.T) {
CanonicalName: "docker.io/public/moonbase",
Official: false,
},
"index." + IndexServerName() + "/public/moonbase": {
"index." + INDEXNAME + "/public/moonbase": {
Index: &IndexInfo{
Name: IndexServerName(),
Official: true,
},
RemoteName: "public/moonbase",
LocalName: "public/moonbase",
CanonicalName: "docker.io/public/moonbase",
Official: false,
},
IndexServerName() + "/public/moonbase": {
Index: &IndexInfo{
Name: IndexServerName(),
Name: INDEXNAME,
Official: true,
},
RemoteName: "public/moonbase",
@ -512,7 +502,7 @@ func TestParseRepositoryInfo(t *testing.T) {
},
"ubuntu-12.04-base": {
Index: &IndexInfo{
Name: IndexServerName(),
Name: INDEXNAME,
Official: true,
},
RemoteName: "library/ubuntu-12.04-base",
@ -520,9 +510,9 @@ func TestParseRepositoryInfo(t *testing.T) {
CanonicalName: "docker.io/library/ubuntu-12.04-base",
Official: true,
},
IndexServerName() + "/ubuntu-12.04-base": {
INDEXNAME + "/ubuntu-12.04-base": {
Index: &IndexInfo{
Name: IndexServerName(),
Name: INDEXNAME,
Official: true,
},
RemoteName: "library/ubuntu-12.04-base",
@ -530,19 +520,9 @@ func TestParseRepositoryInfo(t *testing.T) {
CanonicalName: "docker.io/library/ubuntu-12.04-base",
Official: true,
},
IndexServerName() + "/ubuntu-12.04-base": {
"index." + INDEXNAME + "/ubuntu-12.04-base": {
Index: &IndexInfo{
Name: IndexServerName(),
Official: true,
},
RemoteName: "library/ubuntu-12.04-base",
LocalName: "ubuntu-12.04-base",
CanonicalName: "docker.io/library/ubuntu-12.04-base",
Official: true,
},
"index." + IndexServerName() + "/ubuntu-12.04-base": {
Index: &IndexInfo{
Name: IndexServerName(),
Name: INDEXNAME,
Official: true,
},
RemoteName: "library/ubuntu-12.04-base",
@ -585,14 +565,14 @@ func TestNewIndexInfo(t *testing.T) {
config := NewServiceConfig(nil)
noMirrors := make([]string, 0)
expectedIndexInfos := map[string]*IndexInfo{
IndexServerName(): {
Name: IndexServerName(),
INDEXNAME: {
Name: INDEXNAME,
Official: true,
Secure: true,
Mirrors: noMirrors,
},
"index." + IndexServerName(): {
Name: IndexServerName(),
"index." + INDEXNAME: {
Name: INDEXNAME,
Official: true,
Secure: true,
Mirrors: noMirrors,
@ -616,14 +596,14 @@ func TestNewIndexInfo(t *testing.T) {
config = makeServiceConfig(publicMirrors, []string{"example.com"})
expectedIndexInfos = map[string]*IndexInfo{
IndexServerName(): {
Name: IndexServerName(),
INDEXNAME: {
Name: INDEXNAME,
Official: true,
Secure: true,
Mirrors: publicMirrors,
},
"index." + IndexServerName(): {
Name: IndexServerName(),
"index." + INDEXNAME: {
Name: INDEXNAME,
Official: true,
Secure: true,
Mirrors: publicMirrors,
@ -880,7 +860,7 @@ func TestIsSecureIndex(t *testing.T) {
insecureRegistries []string
expected bool
}{
{IndexServerName(), nil, true},
{INDEXNAME, nil, true},
{"example.com", []string{}, true},
{"example.com", []string{"example.com"}, false},
{"localhost", []string{"localhost:5000"}, false},

195
docs/service.go
View file

@ -1,9 +1,19 @@
package registry
import (
"crypto/tls"
"crypto/x509"
"fmt"
"io/ioutil"
"net/http"
"os"
"path/filepath"
"strings"
"github.com/Sirupsen/logrus"
"github.com/docker/distribution/registry/client/auth"
"github.com/docker/docker/cliconfig"
"github.com/docker/docker/pkg/tlsconfig"
)
type Service struct {
@ -25,7 +35,7 @@ func (s *Service) Auth(authConfig *cliconfig.AuthConfig) (string, error) {
addr := authConfig.ServerAddress
if addr == "" {
// Use the official registry address if not specified.
addr = IndexServerAddress()
addr = INDEXSERVER
}
index, err := s.ResolveIndex(addr)
if err != nil {
@ -69,3 +79,186 @@ func (s *Service) ResolveRepository(name string) (*RepositoryInfo, error) {
func (s *Service) ResolveIndex(name string) (*IndexInfo, error) {
return s.Config.NewIndexInfo(name)
}
type APIEndpoint struct {
Mirror bool
URL string
Version APIVersion
Official bool
TrimHostname bool
TLSConfig *tls.Config
VersionHeader string
Versions []auth.APIVersion
}
func (e APIEndpoint) ToV1Endpoint(metaHeaders http.Header) (*Endpoint, error) {
return newEndpoint(e.URL, e.TLSConfig, metaHeaders)
}
func (s *Service) TlsConfig(hostname string) (*tls.Config, error) {
// we construct a client tls config from server defaults
// PreferredServerCipherSuites should have no effect
tlsConfig := tlsconfig.ServerDefault
isSecure := s.Config.isSecureIndex(hostname)
tlsConfig.InsecureSkipVerify = !isSecure
if isSecure {
hasFile := func(files []os.FileInfo, name string) bool {
for _, f := range files {
if f.Name() == name {
return true
}
}
return false
}
hostDir := filepath.Join(CERTS_DIR, hostname)
logrus.Debugf("hostDir: %s", hostDir)
fs, err := ioutil.ReadDir(hostDir)
if err != nil && !os.IsNotExist(err) {
return nil, err
}
for _, f := range fs {
if strings.HasSuffix(f.Name(), ".crt") {
if tlsConfig.RootCAs == nil {
// TODO(dmcgowan): Copy system pool
tlsConfig.RootCAs = x509.NewCertPool()
}
logrus.Debugf("crt: %s", filepath.Join(hostDir, f.Name()))
data, err := ioutil.ReadFile(filepath.Join(hostDir, f.Name()))
if err != nil {
return nil, err
}
tlsConfig.RootCAs.AppendCertsFromPEM(data)
}
if strings.HasSuffix(f.Name(), ".cert") {
certName := f.Name()
keyName := certName[:len(certName)-5] + ".key"
logrus.Debugf("cert: %s", filepath.Join(hostDir, f.Name()))
if !hasFile(fs, keyName) {
return nil, fmt.Errorf("Missing key %s for certificate %s", keyName, certName)
}
cert, err := tls.LoadX509KeyPair(filepath.Join(hostDir, certName), filepath.Join(hostDir, keyName))
if err != nil {
return nil, err
}
tlsConfig.Certificates = append(tlsConfig.Certificates, cert)
}
if strings.HasSuffix(f.Name(), ".key") {
keyName := f.Name()
certName := keyName[:len(keyName)-4] + ".cert"
logrus.Debugf("key: %s", filepath.Join(hostDir, f.Name()))
if !hasFile(fs, certName) {
return nil, fmt.Errorf("Missing certificate %s for key %s", certName, keyName)
}
}
}
}
return &tlsConfig, nil
}
func (s *Service) LookupEndpoints(repoName string) (endpoints []APIEndpoint, err error) {
var cfg = tlsconfig.ServerDefault
tlsConfig := &cfg
if strings.HasPrefix(repoName, DEFAULT_NAMESPACE+"/") {
// v2 mirrors
for _, mirror := range s.Config.Mirrors {
endpoints = append(endpoints, APIEndpoint{
URL: mirror,
// guess mirrors are v2
Version: APIVersion2,
Mirror: true,
TrimHostname: true,
TLSConfig: tlsConfig,
})
}
// v2 registry
endpoints = append(endpoints, APIEndpoint{
URL: DEFAULT_V2_REGISTRY,
Version: APIVersion2,
Official: true,
TrimHostname: true,
TLSConfig: tlsConfig,
})
// v1 mirrors
// TODO(tiborvass): shouldn't we remove v1 mirrors from here, since v1 mirrors are kinda special?
for _, mirror := range s.Config.Mirrors {
endpoints = append(endpoints, APIEndpoint{
URL: mirror,
// guess mirrors are v1
Version: APIVersion1,
Mirror: true,
TrimHostname: true,
TLSConfig: tlsConfig,
})
}
// v1 registry
endpoints = append(endpoints, APIEndpoint{
URL: DEFAULT_V1_REGISTRY,
Version: APIVersion1,
Official: true,
TrimHostname: true,
TLSConfig: tlsConfig,
})
return endpoints, nil
}
slashIndex := strings.IndexRune(repoName, '/')
if slashIndex <= 0 {
return nil, fmt.Errorf("invalid repo name: missing '/': %s", repoName)
}
hostname := repoName[:slashIndex]
tlsConfig, err = s.TlsConfig(hostname)
if err != nil {
return nil, err
}
isSecure := !tlsConfig.InsecureSkipVerify
v2Versions := []auth.APIVersion{
{
Type: "registry",
Version: "2.0",
},
}
endpoints = []APIEndpoint{
{
URL: "https://" + hostname,
Version: APIVersion2,
TrimHostname: true,
TLSConfig: tlsConfig,
VersionHeader: DEFAULT_REGISTRY_VERSION_HEADER,
Versions: v2Versions,
},
{
URL: "https://" + hostname,
Version: APIVersion1,
TrimHostname: true,
TLSConfig: tlsConfig,
},
}
if !isSecure {
endpoints = append(endpoints, APIEndpoint{
URL: "http://" + hostname,
Version: APIVersion2,
TrimHostname: true,
// used to check if supposed to be secure via InsecureSkipVerify
TLSConfig: tlsConfig,
VersionHeader: DEFAULT_REGISTRY_VERSION_HEADER,
Versions: v2Versions,
}, APIEndpoint{
URL: "http://" + hostname,
Version: APIVersion1,
TrimHostname: true,
// used to check if supposed to be secure via InsecureSkipVerify
TLSConfig: tlsConfig,
})
}
return endpoints, nil
}

28
docs/session.go
View file

@ -22,8 +22,8 @@ import (
"github.com/Sirupsen/logrus"
"github.com/docker/docker/cliconfig"
"github.com/docker/docker/pkg/httputils"
"github.com/docker/docker/pkg/ioutils"
"github.com/docker/docker/pkg/tarsum"
"github.com/docker/docker/pkg/transport"
)
var (
@ -73,6 +73,21 @@ func AuthTransport(base http.RoundTripper, authConfig *cliconfig.AuthConfig, alw
}
}
// cloneRequest returns a clone of the provided *http.Request.
// The clone is a shallow copy of the struct and its Header map.
func cloneRequest(r *http.Request) *http.Request {
// shallow copy of the struct
r2 := new(http.Request)
*r2 = *r
// deep copy of the Header
r2.Header = make(http.Header, len(r.Header))
for k, s := range r.Header {
r2.Header[k] = append([]string(nil), s...)
}
return r2
}
func (tr *authTransport) RoundTrip(orig *http.Request) (*http.Response, error) {
// Authorization should not be set on 302 redirect for untrusted locations.
// This logic mirrors the behavior in AddRequiredHeadersToRedirectedRequests.
@ -83,7 +98,7 @@ func (tr *authTransport) RoundTrip(orig *http.Request) (*http.Response, error) {
return tr.RoundTripper.RoundTrip(orig)
}
req := transport.CloneRequest(orig)
req := cloneRequest(orig)
tr.mu.Lock()
tr.modReq[orig] = req
tr.mu.Unlock()
@ -112,7 +127,7 @@ func (tr *authTransport) RoundTrip(orig *http.Request) (*http.Response, error) {
if len(resp.Header["X-Docker-Token"]) > 0 {
tr.token = resp.Header["X-Docker-Token"]
}
resp.Body = &transport.OnEOFReader{
resp.Body = &ioutils.OnEOFReader{
Rc: resp.Body,
Fn: func() {
tr.mu.Lock()
@ -149,12 +164,11 @@ func NewSession(client *http.Client, authConfig *cliconfig.AuthConfig, endpoint
// If we're working with a standalone private registry over HTTPS, send Basic Auth headers
// alongside all our requests.
if endpoint.VersionString(1) != IndexServerAddress() && endpoint.URL.Scheme == "https" {
if endpoint.VersionString(1) != INDEXSERVER && endpoint.URL.Scheme == "https" {
info, err := endpoint.Ping()
if err != nil {
return nil, err
}
if info.Standalone && authConfig != nil {
logrus.Debugf("Endpoint %s is eligible for private registry. Enabling decorator.", endpoint.String())
alwaysSetBasicAuth = true
@ -250,7 +264,7 @@ func (r *Session) GetRemoteImageLayer(imgID, registry string, imgSize int64) (io
if err != nil {
return nil, fmt.Errorf("Error while getting from the server: %v", err)
}
// TODO: why are we doing retries at this level?
// TODO(tiborvass): why are we doing retries at this level?
// These retries should be generic to both v1 and v2
for i := 1; i <= retries; i++ {
statusCode = 0
@ -417,7 +431,7 @@ func (r *Session) GetRepositoryData(remote string) (*RepositoryData, error) {
}
// Forge a better object from the retrieved data
imgsData := make(map[string]*ImgData)
imgsData := make(map[string]*ImgData, len(remoteChecksums))
for _, elem := range remoteChecksums {
imgsData[elem.ID] = elem
}

414
docs/session_v2.go
View file

@ -1,414 +0,0 @@
package registry
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"strconv"
"github.com/Sirupsen/logrus"
"github.com/docker/distribution/digest"
"github.com/docker/distribution/registry/api/v2"
"github.com/docker/docker/pkg/httputils"
)
const DockerDigestHeader = "Docker-Content-Digest"
func getV2Builder(e *Endpoint) *v2.URLBuilder {
if e.URLBuilder == nil {
e.URLBuilder = v2.NewURLBuilder(e.URL)
}
return e.URLBuilder
}
func (r *Session) V2RegistryEndpoint(index *IndexInfo) (ep *Endpoint, err error) {
// TODO check if should use Mirror
if index.Official {
ep, err = newEndpoint(REGISTRYSERVER, true, nil)
if err != nil {
return
}
err = validateEndpoint(ep)
if err != nil {
return
}
} else if r.indexEndpoint.String() == index.GetAuthConfigKey() {
ep = r.indexEndpoint
} else {
ep, err = NewEndpoint(index, nil)
if err != nil {
return
}
}
ep.URLBuilder = v2.NewURLBuilder(ep.URL)
return
}
// GetV2Authorization gets the authorization needed to the given image
// If readonly access is requested, then the authorization may
// only be used for Get operations.
func (r *Session) GetV2Authorization(ep *Endpoint, imageName string, readOnly bool) (auth *RequestAuthorization, err error) {
scopes := []string{"pull"}
if !readOnly {
scopes = append(scopes, "push")
}
logrus.Debugf("Getting authorization for %s %s", imageName, scopes)
return NewRequestAuthorization(r.GetAuthConfig(true), ep, "repository", imageName, scopes), nil
}
//
// 1) Check if TarSum of each layer exists /v2/
// 1.a) if 200, continue
// 1.b) if 300, then push the
// 1.c) if anything else, err
// 2) PUT the created/signed manifest
//
// GetV2ImageManifest simply fetches the bytes of a manifest and the remote
// digest, if available in the request. Note that the application shouldn't
// rely on the untrusted remoteDigest, and should also verify against a
// locally provided digest, if applicable.
func (r *Session) GetV2ImageManifest(ep *Endpoint, imageName, tagName string, auth *RequestAuthorization) (remoteDigest digest.Digest, p []byte, err error) {
routeURL, err := getV2Builder(ep).BuildManifestURL(imageName, tagName)
if err != nil {
return "", nil, err
}
method := "GET"
logrus.Debugf("[registry] Calling %q %s", method, routeURL)
req, err := http.NewRequest(method, routeURL, nil)
if err != nil {
return "", nil, err
}
if err := auth.Authorize(req); err != nil {
return "", nil, err
}
res, err := r.client.Do(req)
if err != nil {
return "", nil, err
}
defer res.Body.Close()
if res.StatusCode != 200 {
if res.StatusCode == 401 {
return "", nil, errLoginRequired
} else if res.StatusCode == 404 {
return "", nil, ErrDoesNotExist
}
return "", nil, httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to fetch for %s:%s", res.StatusCode, imageName, tagName), res)
}
p, err = ioutil.ReadAll(res.Body)
if err != nil {
return "", nil, fmt.Errorf("Error while reading the http response: %s", err)
}
dgstHdr := res.Header.Get(DockerDigestHeader)
if dgstHdr != "" {
remoteDigest, err = digest.ParseDigest(dgstHdr)
if err != nil {
// NOTE(stevvooe): Including the remote digest is optional. We
// don't need to verify against it, but it is good practice.
remoteDigest = ""
logrus.Debugf("error parsing remote digest when fetching %v: %v", routeURL, err)
}
}
return
}
// - Succeeded to head image blob (already exists)
// - Failed with no error (continue to Push the Blob)
// - Failed with error
func (r *Session) HeadV2ImageBlob(ep *Endpoint, imageName string, dgst digest.Digest, auth *RequestAuthorization) (bool, error) {
routeURL, err := getV2Builder(ep).BuildBlobURL(imageName, dgst)
if err != nil {
return false, err
}
method := "HEAD"
logrus.Debugf("[registry] Calling %q %s", method, routeURL)
req, err := http.NewRequest(method, routeURL, nil)
if err != nil {
return false, err
}
if err := auth.Authorize(req); err != nil {
return false, err
}
res, err := r.client.Do(req)
if err != nil {
return false, err
}
res.Body.Close() // close early, since we're not needing a body on this call .. yet?
switch {
case res.StatusCode >= 200 && res.StatusCode < 400:
// return something indicating no push needed
return true, nil
case res.StatusCode == 401:
return false, errLoginRequired
case res.StatusCode == 404:
// return something indicating blob push needed
return false, nil
}
return false, httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying head request for %s - %s", res.StatusCode, imageName, dgst), res)
}
func (r *Session) GetV2ImageBlob(ep *Endpoint, imageName string, dgst digest.Digest, blobWrtr io.Writer, auth *RequestAuthorization) error {
routeURL, err := getV2Builder(ep).BuildBlobURL(imageName, dgst)
if err != nil {
return err
}
method := "GET"
logrus.Debugf("[registry] Calling %q %s", method, routeURL)
req, err := http.NewRequest(method, routeURL, nil)
if err != nil {
return err
}
if err := auth.Authorize(req); err != nil {
return err
}
res, err := r.client.Do(req)
if err != nil {
return err
}
defer res.Body.Close()
if res.StatusCode != 200 {
if res.StatusCode == 401 {
return errLoginRequired
}
return httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to pull %s blob", res.StatusCode, imageName), res)
}
_, err = io.Copy(blobWrtr, res.Body)
return err
}
func (r *Session) GetV2ImageBlobReader(ep *Endpoint, imageName string, dgst digest.Digest, auth *RequestAuthorization) (io.ReadCloser, int64, error) {
routeURL, err := getV2Builder(ep).BuildBlobURL(imageName, dgst)
if err != nil {
return nil, 0, err
}
method := "GET"
logrus.Debugf("[registry] Calling %q %s", method, routeURL)
req, err := http.NewRequest(method, routeURL, nil)
if err != nil {
return nil, 0, err
}
if err := auth.Authorize(req); err != nil {
return nil, 0, err
}
res, err := r.client.Do(req)
if err != nil {
return nil, 0, err
}
if res.StatusCode != 200 {
if res.StatusCode == 401 {
return nil, 0, errLoginRequired
}
return nil, 0, httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to pull %s blob - %s", res.StatusCode, imageName, dgst), res)
}
lenStr := res.Header.Get("Content-Length")
l, err := strconv.ParseInt(lenStr, 10, 64)
if err != nil {
return nil, 0, err
}
return res.Body, l, err
}
// Push the image to the server for storage.
// 'layer' is an uncompressed reader of the blob to be pushed.
// The server will generate it's own checksum calculation.
func (r *Session) PutV2ImageBlob(ep *Endpoint, imageName string, dgst digest.Digest, blobRdr io.Reader, auth *RequestAuthorization) error {
location, err := r.initiateBlobUpload(ep, imageName, auth)
if err != nil {
return err
}
method := "PUT"
logrus.Debugf("[registry] Calling %q %s", method, location)
req, err := http.NewRequest(method, location, ioutil.NopCloser(blobRdr))
if err != nil {
return err
}
queryParams := req.URL.Query()
queryParams.Add("digest", dgst.String())
req.URL.RawQuery = queryParams.Encode()
if err := auth.Authorize(req); err != nil {
return err
}
res, err := r.client.Do(req)
if err != nil {
return err
}
defer res.Body.Close()
if res.StatusCode != 201 {
if res.StatusCode == 401 {
return errLoginRequired
}
errBody, err := ioutil.ReadAll(res.Body)
if err != nil {
return err
}
logrus.Debugf("Unexpected response from server: %q %#v", errBody, res.Header)
return httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to push %s blob - %s", res.StatusCode, imageName, dgst), res)
}
return nil
}
// initiateBlobUpload gets the blob upload location for the given image name.
func (r *Session) initiateBlobUpload(ep *Endpoint, imageName string, auth *RequestAuthorization) (location string, err error) {
routeURL, err := getV2Builder(ep).BuildBlobUploadURL(imageName)
if err != nil {
return "", err
}
logrus.Debugf("[registry] Calling %q %s", "POST", routeURL)
req, err := http.NewRequest("POST", routeURL, nil)
if err != nil {
return "", err
}
if err := auth.Authorize(req); err != nil {
return "", err
}
res, err := r.client.Do(req)
if err != nil {
return "", err
}
if res.StatusCode != http.StatusAccepted {
if res.StatusCode == http.StatusUnauthorized {
return "", errLoginRequired
}
if res.StatusCode == http.StatusNotFound {
return "", ErrDoesNotExist
}
errBody, err := ioutil.ReadAll(res.Body)
if err != nil {
return "", err
}
logrus.Debugf("Unexpected response from server: %q %#v", errBody, res.Header)
return "", httputils.NewHTTPRequestError(fmt.Sprintf("Server error: unexpected %d response status trying to initiate upload of %s", res.StatusCode, imageName), res)
}
if location = res.Header.Get("Location"); location == "" {
return "", fmt.Errorf("registry did not return a Location header for resumable blob upload for image %s", imageName)
}
return
}
// Finally Push the (signed) manifest of the blobs we've just pushed
func (r *Session) PutV2ImageManifest(ep *Endpoint, imageName, tagName string, signedManifest, rawManifest []byte, auth *RequestAuthorization) (digest.Digest, error) {
routeURL, err := getV2Builder(ep).BuildManifestURL(imageName, tagName)
if err != nil {
return "", err
}
method := "PUT"
logrus.Debugf("[registry] Calling %q %s", method, routeURL)
req, err := http.NewRequest(method, routeURL, bytes.NewReader(signedManifest))
if err != nil {
return "", err
}
if err := auth.Authorize(req); err != nil {
return "", err
}
res, err := r.client.Do(req)
if err != nil {
return "", err
}
defer res.Body.Close()
// All 2xx and 3xx responses can be accepted for a put.
if res.StatusCode >= 400 {
if res.StatusCode == 401 {
return "", errLoginRequired
}
errBody, err := ioutil.ReadAll(res.Body)
if err != nil {
return "", err
}
logrus.Debugf("Unexpected response from server: %q %#v", errBody, res.Header)
return "", httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to push %s:%s manifest", res.StatusCode, imageName, tagName), res)
}
hdrDigest, err := digest.ParseDigest(res.Header.Get(DockerDigestHeader))
if err != nil {
return "", fmt.Errorf("invalid manifest digest from registry: %s", err)
}
dgstVerifier, err := digest.NewDigestVerifier(hdrDigest)
if err != nil {
return "", fmt.Errorf("invalid manifest digest from registry: %s", err)
}
dgstVerifier.Write(rawManifest)
if !dgstVerifier.Verified() {
computedDigest, _ := digest.FromBytes(rawManifest)
return "", fmt.Errorf("unable to verify manifest digest: registry has %q, computed %q", hdrDigest, computedDigest)
}
return hdrDigest, nil
}
type remoteTags struct {
Name string `json:"name"`
Tags []string `json:"tags"`
}
// Given a repository name, returns a json array of string tags
func (r *Session) GetV2RemoteTags(ep *Endpoint, imageName string, auth *RequestAuthorization) ([]string, error) {
routeURL, err := getV2Builder(ep).BuildTagsURL(imageName)
if err != nil {
return nil, err
}
method := "GET"
logrus.Debugf("[registry] Calling %q %s", method, routeURL)
req, err := http.NewRequest(method, routeURL, nil)
if err != nil {
return nil, err
}
if err := auth.Authorize(req); err != nil {
return nil, err
}
res, err := r.client.Do(req)
if err != nil {
return nil, err
}
defer res.Body.Close()
if res.StatusCode != 200 {
if res.StatusCode == 401 {
return nil, errLoginRequired
} else if res.StatusCode == 404 {
return nil, ErrDoesNotExist
}
return nil, httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to fetch for %s", res.StatusCode, imageName), res)
}
var remote remoteTags
if err := json.NewDecoder(res.Body).Decode(&remote); err != nil {
return nil, fmt.Errorf("Error while decoding the http response: %s", err)
}
return remote.Tags, nil
}