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Kim Min 2018-02-14 16:56:04 +08:00 • committed by Traefiker Bot
parent 029fa83690
commit 83a92596c3
901 changed files with 169303 additions and 306433 deletions
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274
vendor/k8s.io/client-go/plugin/pkg/client/auth/gcp/gcp.go generated vendored
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@ -1,274 +0,0 @@
/*
Copyright 2016 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package gcp
import (
"bytes"
"encoding/json"
"fmt"
"net/http"
"os/exec"
"strings"
"sync"
"time"
"github.com/golang/glog"
"golang.org/x/net/context"
"golang.org/x/oauth2"
"golang.org/x/oauth2/google"
"k8s.io/client-go/pkg/util/jsonpath"
"k8s.io/client-go/pkg/util/yaml"
"k8s.io/client-go/rest"
)
func init() {
if err := rest.RegisterAuthProviderPlugin("gcp", newGCPAuthProvider); err != nil {
glog.Fatalf("Failed to register gcp auth plugin: %v", err)
}
}
// gcpAuthProvider is an auth provider plugin that uses GCP credentials to provide
// tokens for kubectl to authenticate itself to the apiserver. A sample json config
// is provided below with all recognized options described.
//
// {
// 'auth-provider': {
// # Required
// "name": "gcp",
//
// 'config': {
// # Caching options
//
// # Raw string data representing cached access token.
// "access-token": "ya29.CjWdA4GiBPTt",
// # RFC3339Nano expiration timestamp for cached access token.
// "expiry": "2016-10-31 22:31:9.123",
//
// # Command execution options
// # These options direct the plugin to execute a specified command and parse
// # token and expiry time from the output of the command.
//
// # Command to execute for access token. String is split on whitespace
// # with first field treated as the executable, remaining fields as args.
// # Command output will be parsed as JSON.
// "cmd-path": "/usr/bin/gcloud config config-helper --output=json",
//
// # JSONPath to the string field that represents the access token in
// # command output. If omitted, defaults to "{.access_token}".
// "token-key": "{.credential.access_token}",
//
// # JSONPath to the string field that represents expiration timestamp
// # of the access token in the command output. If omitted, defaults to
// # "{.token_expiry}"
// "expiry-key": ""{.credential.token_expiry}",
//
// # golang reference time in the format that the expiration timestamp uses.
// # If omitted, defaults to time.RFC3339Nano
// "time-fmt": "2006-01-02 15:04:05.999999999"
// }
// }
// }
//
type gcpAuthProvider struct {
tokenSource oauth2.TokenSource
persister rest.AuthProviderConfigPersister
}
func newGCPAuthProvider(_ string, gcpConfig map[string]string, persister rest.AuthProviderConfigPersister) (rest.AuthProvider, error) {
cmd, useCmd := gcpConfig["cmd-path"]
var ts oauth2.TokenSource
var err error
if useCmd {
ts, err = newCmdTokenSource(cmd, gcpConfig["token-key"], gcpConfig["expiry-key"], gcpConfig["time-fmt"])
} else {
ts, err = google.DefaultTokenSource(context.Background(), "https://www.googleapis.com/auth/cloud-platform")
}
if err != nil {
return nil, err
}
cts, err := newCachedTokenSource(gcpConfig["access-token"], gcpConfig["expiry"], persister, ts, gcpConfig)
if err != nil {
return nil, err
}
return &gcpAuthProvider{cts, persister}, nil
}
func (g *gcpAuthProvider) WrapTransport(rt http.RoundTripper) http.RoundTripper {
return &oauth2.Transport{
Source: g.tokenSource,
Base: rt,
}
}
func (g *gcpAuthProvider) Login() error { return nil }
type cachedTokenSource struct {
lk sync.Mutex
source oauth2.TokenSource
accessToken string
expiry time.Time
persister rest.AuthProviderConfigPersister
cache map[string]string
}
func newCachedTokenSource(accessToken, expiry string, persister rest.AuthProviderConfigPersister, ts oauth2.TokenSource, cache map[string]string) (*cachedTokenSource, error) {
var expiryTime time.Time
if parsedTime, err := time.Parse(time.RFC3339Nano, expiry); err == nil {
expiryTime = parsedTime
}
if cache == nil {
cache = make(map[string]string)
}
return &cachedTokenSource{
source: ts,
accessToken: accessToken,
expiry: expiryTime,
persister: persister,
cache: cache,
}, nil
}
func (t *cachedTokenSource) Token() (*oauth2.Token, error) {
tok := t.cachedToken()
if tok.Valid() && !tok.Expiry.IsZero() {
return tok, nil
}
tok, err := t.source.Token()
if err != nil {
return nil, err
}
cache := t.update(tok)
if t.persister != nil {
if err := t.persister.Persist(cache); err != nil {
glog.V(4).Infof("Failed to persist token: %v", err)
}
}
return tok, nil
}
func (t *cachedTokenSource) cachedToken() *oauth2.Token {
t.lk.Lock()
defer t.lk.Unlock()
return &oauth2.Token{
AccessToken: t.accessToken,
TokenType: "Bearer",
Expiry: t.expiry,
}
}
func (t *cachedTokenSource) update(tok *oauth2.Token) map[string]string {
t.lk.Lock()
defer t.lk.Unlock()
t.accessToken = tok.AccessToken
t.expiry = tok.Expiry
ret := map[string]string{}
for k, v := range t.cache {
ret[k] = v
}
ret["access-token"] = t.accessToken
ret["expiry"] = t.expiry.Format(time.RFC3339Nano)
return ret
}
type commandTokenSource struct {
cmd string
args []string
tokenKey string
expiryKey string
timeFmt string
}
func newCmdTokenSource(cmd, tokenKey, expiryKey, timeFmt string) (*commandTokenSource, error) {
if len(timeFmt) == 0 {
timeFmt = time.RFC3339Nano
}
if len(tokenKey) == 0 {
tokenKey = "{.access_token}"
}
if len(expiryKey) == 0 {
expiryKey = "{.token_expiry}"
}
fields := strings.Fields(cmd)
if len(fields) == 0 {
return nil, fmt.Errorf("missing access token cmd")
}
return &commandTokenSource{
cmd: fields[0],
args: fields[1:],
tokenKey: tokenKey,
expiryKey: expiryKey,
timeFmt: timeFmt,
}, nil
}
func (c *commandTokenSource) Token() (*oauth2.Token, error) {
fullCmd := fmt.Sprintf("%s %s", c.cmd, strings.Join(c.args, " "))
cmd := exec.Command(c.cmd, c.args...)
output, err := cmd.Output()
if err != nil {
return nil, fmt.Errorf("error executing access token command %q: %v", fullCmd, err)
}
token, err := c.parseTokenCmdOutput(output)
if err != nil {
return nil, fmt.Errorf("error parsing output for access token command %q: %v", fullCmd, err)
}
return token, nil
}
func (c *commandTokenSource) parseTokenCmdOutput(output []byte) (*oauth2.Token, error) {
output, err := yaml.ToJSON(output)
if err != nil {
return nil, err
}
var data interface{}
if err := json.Unmarshal(output, &data); err != nil {
return nil, err
}
accessToken, err := parseJSONPath(data, "token-key", c.tokenKey)
if err != nil {
return nil, fmt.Errorf("error parsing token-key %q: %v", c.tokenKey, err)
}
expiryStr, err := parseJSONPath(data, "expiry-key", c.expiryKey)
if err != nil {
return nil, fmt.Errorf("error parsing expiry-key %q: %v", c.expiryKey, err)
}
var expiry time.Time
if t, err := time.Parse(c.timeFmt, expiryStr); err != nil {
glog.V(4).Infof("Failed to parse token expiry from %s (fmt=%s): %v", expiryStr, c.timeFmt, err)
} else {
expiry = t
}
return &oauth2.Token{
AccessToken: accessToken,
TokenType: "Bearer",
Expiry: expiry,
}, nil
}
func parseJSONPath(input interface{}, name, template string) (string, error) {
j := jsonpath.New(name)
buf := new(bytes.Buffer)
if err := j.Parse(template); err != nil {
return "", err
}
if err := j.Execute(buf, input); err != nil {
return "", err
}
return buf.String(), nil
}

333
vendor/k8s.io/client-go/plugin/pkg/client/auth/oidc/oidc.go generated vendored
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@ -1,333 +0,0 @@
/*
Copyright 2016 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package oidc
import (
"encoding/base64"
"errors"
"fmt"
"net/http"
"strings"
"sync"
"time"
"github.com/coreos/go-oidc/jose"
"github.com/coreos/go-oidc/oauth2"
"github.com/coreos/go-oidc/oidc"
"github.com/golang/glog"
"k8s.io/client-go/rest"
)
const (
cfgIssuerUrl = "idp-issuer-url"
cfgClientID = "client-id"
cfgClientSecret = "client-secret"
cfgCertificateAuthority = "idp-certificate-authority"
cfgCertificateAuthorityData = "idp-certificate-authority-data"
cfgExtraScopes = "extra-scopes"
cfgIDToken = "id-token"
cfgRefreshToken = "refresh-token"
)
func init() {
if err := rest.RegisterAuthProviderPlugin("oidc", newOIDCAuthProvider); err != nil {
glog.Fatalf("Failed to register oidc auth plugin: %v", err)
}
}
// expiryDelta determines how earlier a token should be considered
// expired than its actual expiration time. It is used to avoid late
// expirations due to client-server time mismatches.
//
// NOTE(ericchiang): this is take from golang.org/x/oauth2
const expiryDelta = 10 * time.Second
var cache = newClientCache()
// Like TLS transports, keep a cache of OIDC clients indexed by issuer URL.
type clientCache struct {
mu sync.RWMutex
cache map[cacheKey]*oidcAuthProvider
}
func newClientCache() *clientCache {
return &clientCache{cache: make(map[cacheKey]*oidcAuthProvider)}
}
type cacheKey struct {
// Canonical issuer URL string of the provider.
issuerURL string
clientID string
clientSecret string
// Don't use CA as cache key because we only add a cache entry if we can connect
// to the issuer in the first place. A valid CA is a prerequisite.
}
func (c *clientCache) getClient(issuer, clientID, clientSecret string) (*oidcAuthProvider, bool) {
c.mu.RLock()
defer c.mu.RUnlock()
client, ok := c.cache[cacheKey{issuer, clientID, clientSecret}]
return client, ok
}
// setClient attempts to put the client in the cache but may return any clients
// with the same keys set before. This is so there's only ever one client for a provider.
func (c *clientCache) setClient(issuer, clientID, clientSecret string, client *oidcAuthProvider) *oidcAuthProvider {
c.mu.Lock()
defer c.mu.Unlock()
key := cacheKey{issuer, clientID, clientSecret}
// If another client has already initialized a client for the given provider we want
// to use that client instead of the one we're trying to set. This is so all transports
// share a client and can coordinate around the same mutex when refreshing and writing
// to the kubeconfig.
if oldClient, ok := c.cache[key]; ok {
return oldClient
}
c.cache[key] = client
return client
}
func newOIDCAuthProvider(_ string, cfg map[string]string, persister rest.AuthProviderConfigPersister) (rest.AuthProvider, error) {
issuer := cfg[cfgIssuerUrl]
if issuer == "" {
return nil, fmt.Errorf("Must provide %s", cfgIssuerUrl)
}
clientID := cfg[cfgClientID]
if clientID == "" {
return nil, fmt.Errorf("Must provide %s", cfgClientID)
}
clientSecret := cfg[cfgClientSecret]
if clientSecret == "" {
return nil, fmt.Errorf("Must provide %s", cfgClientSecret)
}
// Check cache for existing provider.
if provider, ok := cache.getClient(issuer, clientID, clientSecret); ok {
return provider, nil
}
var certAuthData []byte
var err error
if cfg[cfgCertificateAuthorityData] != "" {
certAuthData, err = base64.StdEncoding.DecodeString(cfg[cfgCertificateAuthorityData])
if err != nil {
return nil, err
}
}
clientConfig := rest.Config{
TLSClientConfig: rest.TLSClientConfig{
CAFile: cfg[cfgCertificateAuthority],
CAData: certAuthData,
},
}
trans, err := rest.TransportFor(&clientConfig)
if err != nil {
return nil, err
}
hc := &http.Client{Transport: trans}
providerCfg, err := oidc.FetchProviderConfig(hc, issuer)
if err != nil {
return nil, fmt.Errorf("error fetching provider config: %v", err)
}
scopes := strings.Split(cfg[cfgExtraScopes], ",")
oidcCfg := oidc.ClientConfig{
HTTPClient: hc,
Credentials: oidc.ClientCredentials{
ID: clientID,
Secret: clientSecret,
},
ProviderConfig: providerCfg,
Scope: append(scopes, oidc.DefaultScope...),
}
client, err := oidc.NewClient(oidcCfg)
if err != nil {
return nil, fmt.Errorf("error creating OIDC Client: %v", err)
}
provider := &oidcAuthProvider{
client: &oidcClient{client},
cfg: cfg,
persister: persister,
now: time.Now,
}
return cache.setClient(issuer, clientID, clientSecret, provider), nil
}
type oidcAuthProvider struct {
// Interface rather than a raw *oidc.Client for testing.
client OIDCClient
// Stubbed out for testing.
now func() time.Time
// Mutex guards persisting to the kubeconfig file and allows synchronized
// updates to the in-memory config. It also ensures concurrent calls to
// the RoundTripper only trigger a single refresh request.
mu sync.Mutex
cfg map[string]string
persister rest.AuthProviderConfigPersister
}
func (p *oidcAuthProvider) WrapTransport(rt http.RoundTripper) http.RoundTripper {
return &roundTripper{
wrapped: rt,
provider: p,
}
}
func (p *oidcAuthProvider) Login() error {
return errors.New("not yet implemented")
}
type OIDCClient interface {
refreshToken(rt string) (oauth2.TokenResponse, error)
verifyJWT(jwt *jose.JWT) error
}
type roundTripper struct {
provider *oidcAuthProvider
wrapped http.RoundTripper
}
func (r *roundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
token, err := r.provider.idToken()
if err != nil {
return nil, err
}
// shallow copy of the struct
r2 := new(http.Request)
*r2 = *req
// deep copy of the Header so we don't modify the original
// request's Header (as per RoundTripper contract).
r2.Header = make(http.Header)
for k, s := range req.Header {
r2.Header[k] = s
}
r2.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token))
return r.wrapped.RoundTrip(r2)
}
func (p *oidcAuthProvider) idToken() (string, error) {
p.mu.Lock()
defer p.mu.Unlock()
if idToken, ok := p.cfg[cfgIDToken]; ok && len(idToken) > 0 {
valid, err := verifyJWTExpiry(p.now(), idToken)
if err != nil {
return "", err
}
if valid {
// If the cached id token is still valid use it.
return idToken, nil
}
}
// Try to request a new token using the refresh token.
rt, ok := p.cfg[cfgRefreshToken]
if !ok || len(rt) == 0 {
return "", errors.New("No valid id-token, and cannot refresh without refresh-token")
}
tokens, err := p.client.refreshToken(rt)
if err != nil {
return "", fmt.Errorf("could not refresh token: %v", err)
}
jwt, err := jose.ParseJWT(tokens.IDToken)
if err != nil {
return "", err
}
if err := p.client.verifyJWT(&jwt); err != nil {
return "", err
}
// Create a new config to persist.
newCfg := make(map[string]string)
for key, val := range p.cfg {
newCfg[key] = val
}
if tokens.RefreshToken != "" && tokens.RefreshToken != rt {
newCfg[cfgRefreshToken] = tokens.RefreshToken
}
newCfg[cfgIDToken] = tokens.IDToken
if err = p.persister.Persist(newCfg); err != nil {
return "", fmt.Errorf("could not perist new tokens: %v", err)
}
// Update the in memory config to reflect the on disk one.
p.cfg = newCfg
return tokens.IDToken, nil
}
// oidcClient is the real implementation of the OIDCClient interface, which is
// used for testing.
type oidcClient struct {
client *oidc.Client
}
func (o *oidcClient) refreshToken(rt string) (oauth2.TokenResponse, error) {
oac, err := o.client.OAuthClient()
if err != nil {
return oauth2.TokenResponse{}, err
}
return oac.RequestToken(oauth2.GrantTypeRefreshToken, rt)
}
func (o *oidcClient) verifyJWT(jwt *jose.JWT) error {
return o.client.VerifyJWT(*jwt)
}
func verifyJWTExpiry(now time.Time, s string) (valid bool, err error) {
jwt, err := jose.ParseJWT(s)
if err != nil {
return false, fmt.Errorf("invalid %q", cfgIDToken)
}
claims, err := jwt.Claims()
if err != nil {
return false, err
}
exp, ok, err := claims.TimeClaim("exp")
switch {
case err != nil:
return false, fmt.Errorf("failed to parse 'exp' claim: %v", err)
case !ok:
return false, errors.New("missing required 'exp' claim")
case exp.After(now.Add(expiryDelta)):
return true, nil
}
return false, nil
}

23
vendor/k8s.io/client-go/plugin/pkg/client/auth/plugins.go generated vendored
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@ -1,23 +0,0 @@
/*
Copyright 2016 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package auth
import (
// Initialize all known client auth plugins.
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
_ "k8s.io/client-go/plugin/pkg/client/auth/oidc"
)