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Merge pull request #3070 from alexlarsson/certificates

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This commit is contained in:
Solomon Hykes 2014-07-18 18:27:00 -07:00
commit bc35ac4afd
1 changed files with 174 additions and 53 deletions
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227
docs/registry.go
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@ -4,6 +4,8 @@ import (
"bytes"
"crypto/sha256"
_ "crypto/sha512"
"crypto/tls"
"crypto/x509"
"encoding/json"
"errors"
"fmt"
@ -13,6 +15,8 @@ import (
"net/http"
"net/http/cookiejar"
"net/url"
"os"
"path"
"regexp"
"runtime"
"strconv"
@ -29,31 +33,155 @@ var (
errLoginRequired = errors.New("Authentication is required.")
)
type TimeoutType uint32
const (
NoTimeout TimeoutType = iota
ReceiveTimeout
ConnectTimeout
)
func newClient(jar http.CookieJar, roots *x509.CertPool, cert *tls.Certificate, timeout TimeoutType) *http.Client {
tlsConfig := tls.Config{RootCAs: roots}
if cert != nil {
tlsConfig.Certificates = append(tlsConfig.Certificates, *cert)
}
httpTransport := &http.Transport{
DisableKeepAlives: true,
Proxy: http.ProxyFromEnvironment,
TLSClientConfig: &tlsConfig,
}
switch timeout {
case ConnectTimeout:
httpTransport.Dial = func(proto string, addr string) (net.Conn, error) {
// Set the connect timeout to 5 seconds
conn, err := net.DialTimeout(proto, addr, 5*time.Second)
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:
httpTransport.Dial = func(proto string, addr string) (net.Conn, error) {
conn, err := net.Dial(proto, addr)
if err != nil {
return nil, err
}
conn = utils.NewTimeoutConn(conn, 1*time.Minute)
return conn, nil
}
}
return &http.Client{
Transport: httpTransport,
CheckRedirect: AddRequiredHeadersToRedirectedRequests,
Jar: jar,
}
}
func doRequest(req *http.Request, jar http.CookieJar, timeout TimeoutType) (*http.Response, *http.Client, error) {
hasFile := func(files []os.FileInfo, name string) bool {
for _, f := range files {
if f.Name() == name {
return true
}
}
return false
}
hostDir := path.Join("/etc/docker/certs.d", req.URL.Host)
fs, err := ioutil.ReadDir(hostDir)
if err != nil && !os.IsNotExist(err) {
return nil, nil, err
}
var (
pool *x509.CertPool
certs []*tls.Certificate
)
for _, f := range fs {
if strings.HasSuffix(f.Name(), ".crt") {
if pool == nil {
pool = x509.NewCertPool()
}
data, err := ioutil.ReadFile(path.Join(hostDir, f.Name()))
if err != nil {
return nil, nil, err
} else {
pool.AppendCertsFromPEM(data)
}
}
if strings.HasSuffix(f.Name(), ".cert") {
certName := f.Name()
keyName := certName[:len(certName)-5] + ".key"
if !hasFile(fs, keyName) {
return nil, nil, fmt.Errorf("Missing key %s for certificate %s", keyName, certName)
} else {
cert, err := tls.LoadX509KeyPair(path.Join(hostDir, certName), path.Join(hostDir, keyName))
if err != nil {
return nil, nil, err
}
certs = append(certs, &cert)
}
}
if strings.HasSuffix(f.Name(), ".key") {
keyName := f.Name()
certName := keyName[:len(keyName)-4] + ".cert"
if !hasFile(fs, certName) {
return nil, nil, fmt.Errorf("Missing certificate %s for key %s", certName, keyName)
}
}
}
if len(certs) == 0 {
client := newClient(jar, pool, nil, timeout)
res, err := client.Do(req)
if err != nil {
return nil, nil, err
}
return res, client, nil
} else {
for i, cert := range certs {
client := newClient(jar, pool, cert, timeout)
res, err := client.Do(req)
if i == len(certs)-1 {
// If this is the last cert, always return the result
return res, client, err
} else {
// Otherwise, continue to next cert if 403 or 5xx
if err == nil && res.StatusCode != 403 && !(res.StatusCode >= 500 && res.StatusCode < 600) {
return res, client, err
}
}
}
}
return nil, nil, nil
}
func pingRegistryEndpoint(endpoint string) (RegistryInfo, error) {
if endpoint == IndexServerAddress() {
// Skip the check, we now this one is valid
// (and we never want to fallback to http in case of error)
return RegistryInfo{Standalone: false}, nil
}
httpDial := func(proto string, addr string) (net.Conn, error) {
// Set the connect timeout to 5 seconds
conn, err := net.DialTimeout(proto, addr, 5*time.Second)
if err != nil {
return nil, err
}
// Set the recv timeout to 10 seconds
conn.SetDeadline(time.Now().Add(10 * time.Second))
return conn, nil
}
httpTransport := &http.Transport{
Dial: httpDial,
Proxy: http.ProxyFromEnvironment,
}
client := &http.Client{Transport: httpTransport}
resp, err := client.Get(endpoint + "_ping")
req, err := http.NewRequest("GET", endpoint+"_ping", nil)
if err != nil {
return RegistryInfo{Standalone: false}, err
}
resp, _, err := doRequest(req, nil, ConnectTimeout)
if err != nil {
return RegistryInfo{Standalone: false}, err
}
defer resp.Body.Close()
jsonString, err := ioutil.ReadAll(resp.Body)
@ -171,6 +299,10 @@ func setTokenAuth(req *http.Request, token []string) {
}
}
func (r *Registry) doRequest(req *http.Request) (*http.Response, *http.Client, error) {
return doRequest(req, r.jar, r.timeout)
}
// Retrieve the history of a given image from the Registry.
// Return a list of the parent's json (requested image included)
func (r *Registry) GetRemoteHistory(imgID, registry string, token []string) ([]string, error) {
@ -179,7 +311,7 @@ func (r *Registry) GetRemoteHistory(imgID, registry string, token []string) ([]s
return nil, err
}
setTokenAuth(req, token)
res, err := r.client.Do(req)
res, _, err := r.doRequest(req)
if err != nil {
return nil, err
}
@ -214,7 +346,7 @@ func (r *Registry) LookupRemoteImage(imgID, registry string, token []string) boo
return false
}
setTokenAuth(req, token)
res, err := r.client.Do(req)
res, _, err := r.doRequest(req)
if err != nil {
utils.Errorf("Error in LookupRemoteImage %s", err)
return false
@ -231,7 +363,7 @@ func (r *Registry) GetRemoteImageJSON(imgID, registry string, token []string) ([
return nil, -1, fmt.Errorf("Failed to download json: %s", err)
}
setTokenAuth(req, token)
res, err := r.client.Do(req)
res, _, err := r.doRequest(req)
if err != nil {
return nil, -1, fmt.Errorf("Failed to download json: %s", err)
}
@ -260,6 +392,7 @@ func (r *Registry) GetRemoteImageLayer(imgID, registry string, token []string, i
var (
retries = 5
headRes *http.Response
client *http.Client
hasResume bool = false
imageURL = fmt.Sprintf("%simages/%s/layer", registry, imgID)
)
@ -267,9 +400,10 @@ func (r *Registry) GetRemoteImageLayer(imgID, registry string, token []string, i
if err != nil {
return nil, fmt.Errorf("Error while getting from the server: %s\n", err)
}
setTokenAuth(headReq, token)
for i := 1; i <= retries; i++ {
headRes, err = r.client.Do(headReq)
headRes, client, err = r.doRequest(headReq)
if err != nil && i == retries {
return nil, fmt.Errorf("Eror while making head request: %s\n", err)
} else if err != nil {
@ -290,10 +424,10 @@ func (r *Registry) GetRemoteImageLayer(imgID, registry string, token []string, i
setTokenAuth(req, token)
if hasResume {
utils.Debugf("server supports resume")
return utils.ResumableRequestReader(r.client, req, 5, imgSize), nil
return utils.ResumableRequestReader(client, req, 5, imgSize), nil
}
utils.Debugf("server doesn't support resume")
res, err := r.client.Do(req)
res, _, err := r.doRequest(req)
if err != nil {
return nil, err
}
@ -319,7 +453,7 @@ func (r *Registry) GetRemoteTags(registries []string, repository string, token [
return nil, err
}
setTokenAuth(req, token)
res, err := r.client.Do(req)
res, _, err := r.doRequest(req)
if err != nil {
return nil, err
}
@ -380,7 +514,7 @@ func (r *Registry) GetRepositoryData(remote string) (*RepositoryData, error) {
}
req.Header.Set("X-Docker-Token", "true")
res, err := r.client.Do(req)
res, _, err := r.doRequest(req)
if err != nil {
return nil, err
}
@ -448,13 +582,13 @@ func (r *Registry) PushImageChecksumRegistry(imgData *ImgData, registry string,
req.Header.Set("X-Docker-Checksum", imgData.Checksum)
req.Header.Set("X-Docker-Checksum-Payload", imgData.ChecksumPayload)
res, err := r.client.Do(req)
res, _, err := r.doRequest(req)
if err != nil {
return fmt.Errorf("Failed to upload metadata: %s", err)
}
defer res.Body.Close()
if len(res.Cookies()) > 0 {
r.client.Jar.SetCookies(req.URL, res.Cookies())
r.jar.SetCookies(req.URL, res.Cookies())
}
if res.StatusCode != 200 {
errBody, err := ioutil.ReadAll(res.Body)
@ -484,7 +618,7 @@ func (r *Registry) PushImageJSONRegistry(imgData *ImgData, jsonRaw []byte, regis
req.Header.Add("Content-type", "application/json")
setTokenAuth(req, token)
res, err := r.client.Do(req)
res, _, err := r.doRequest(req)
if err != nil {
return fmt.Errorf("Failed to upload metadata: %s", err)
}
@ -525,7 +659,7 @@ func (r *Registry) PushImageLayerRegistry(imgID string, layer io.Reader, registr
req.ContentLength = -1
req.TransferEncoding = []string{"chunked"}
setTokenAuth(req, token)
res, err := r.client.Do(req)
res, _, err := r.doRequest(req)
if err != nil {
return "", "", fmt.Errorf("Failed to upload layer: %s", err)
}
@ -562,7 +696,7 @@ func (r *Registry) PushRegistryTag(remote, revision, tag, registry string, token
req.Header.Add("Content-type", "application/json")
setTokenAuth(req, token)
req.ContentLength = int64(len(revision))
res, err := r.client.Do(req)
res, _, err := r.doRequest(req)
if err != nil {
return err
}
@ -610,7 +744,7 @@ func (r *Registry) PushImageJSONIndex(remote string, imgList []*ImgData, validat
req.Header["X-Docker-Endpoints"] = regs
}
res, err := r.client.Do(req)
res, _, err := r.doRequest(req)
if err != nil {
return nil, err
}
@ -629,7 +763,7 @@ func (r *Registry) PushImageJSONIndex(remote string, imgList []*ImgData, validat
if validate {
req.Header["X-Docker-Endpoints"] = regs
}
res, err = r.client.Do(req)
res, _, err := r.doRequest(req)
if err != nil {
return nil, err
}
@ -688,7 +822,7 @@ func (r *Registry) SearchRepositories(term string) (*SearchResults, error) {
req.SetBasicAuth(r.authConfig.Username, r.authConfig.Password)
}
req.Header.Set("X-Docker-Token", "true")
res, err := r.client.Do(req)
res, _, err := r.doRequest(req)
if err != nil {
return nil, err
}
@ -750,10 +884,11 @@ type RegistryInfo struct {
}
type Registry struct {
client *http.Client
authConfig *AuthConfig
reqFactory *utils.HTTPRequestFactory
indexEndpoint string
jar *cookiejar.Jar
timeout TimeoutType
}
func trustedLocation(req *http.Request) bool {
@ -791,30 +926,16 @@ func AddRequiredHeadersToRedirectedRequests(req *http.Request, via []*http.Reque
}
func NewRegistry(authConfig *AuthConfig, factory *utils.HTTPRequestFactory, indexEndpoint string, timeout bool) (r *Registry, err error) {
httpTransport := &http.Transport{
DisableKeepAlives: true,
Proxy: http.ProxyFromEnvironment,
}
if timeout {
httpTransport.Dial = func(proto string, addr string) (net.Conn, error) {
conn, err := net.Dial(proto, addr)
if err != nil {
return nil, err
}
conn = utils.NewTimeoutConn(conn, 1*time.Minute)
return conn, nil
}
}
r = &Registry{
authConfig: authConfig,
client: &http.Client{
Transport: httpTransport,
CheckRedirect: AddRequiredHeadersToRedirectedRequests,
},
authConfig: authConfig,
indexEndpoint: indexEndpoint,
}
r.client.Jar, err = cookiejar.New(nil)
if timeout {
r.timeout = ReceiveTimeout
}
r.jar, err = cookiejar.New(nil)
if err != nil {
return nil, err
}