Update dependencies

Among others, this updates minio-go, so that the new "eu-west-3" zone
for AWS is supported.

vendor/golang.org/x/oauth2/internal/client_appengine.go

@@ -0,0 +1,13 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build appengine
+
+package internal
+
+import "google.golang.org/appengine/urlfetch"
+
+func init() {
+	appengineClientHook = urlfetch.Client
+}

vendor/golang.org/x/oauth2/internal/oauth2.go

@@ -5,14 +5,11 @@
 package internal
 
 import (
-	"bufio"
 	"crypto/rsa"
 	"crypto/x509"
 	"encoding/pem"
 	"errors"
 	"fmt"
-	"io"
-	"strings"
 )
 
 // ParseKey converts the binary contents of a private key file
@@ -38,38 +35,3 @@ func ParseKey(key []byte) (*rsa.PrivateKey, error) {
 	}
 	return parsed, nil
 }
-
-func ParseINI(ini io.Reader) (map[string]map[string]string, error) {
-	result := map[string]map[string]string{
-		"": {}, // root section
-	}
-	scanner := bufio.NewScanner(ini)
-	currentSection := ""
-	for scanner.Scan() {
-		line := strings.TrimSpace(scanner.Text())
-		if strings.HasPrefix(line, ";") {
-			// comment.
-			continue
-		}
-		if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
-			currentSection = strings.TrimSpace(line[1 : len(line)-1])
-			result[currentSection] = map[string]string{}
-			continue
-		}
-		parts := strings.SplitN(line, "=", 2)
-		if len(parts) == 2 && parts[0] != "" {
-			result[currentSection][strings.TrimSpace(parts[0])] = strings.TrimSpace(parts[1])
-		}
-	}
-	if err := scanner.Err(); err != nil {
-		return nil, fmt.Errorf("error scanning ini: %v", err)
-	}
-	return result, nil
-}
-
-func CondVal(v string) []string {
-	if v == "" {
-		return nil
-	}
-	return []string{v}
-}

vendor/golang.org/x/oauth2/internal/oauth2_test.go

@@ -1,61 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package internal
-
-import (
-	"reflect"
-	"strings"
-	"testing"
-)
-
-func TestParseINI(t *testing.T) {
-	tests := []struct {
-		ini  string
-		want map[string]map[string]string
-	}{
-		{
-			`root = toor
-[foo]  
-bar = hop
-ini = nin
-`,
-			map[string]map[string]string{
-				"":    {"root": "toor"},
-				"foo": {"bar": "hop", "ini": "nin"},
-			},
-		},
-		{
-			`[empty]
-[section]
-empty=
-`,
-			map[string]map[string]string{
-				"":        {},
-				"empty":   {},
-				"section": {"empty": ""},
-			},
-		},
-		{
-			`ignore
-[invalid
-=stuff
-;comment=true
-`,
-			map[string]map[string]string{
-				"": {},
-			},
-		},
-	}
-	for _, tt := range tests {
-		result, err := ParseINI(strings.NewReader(tt.ini))
-		if err != nil {
-			t.Errorf("ParseINI(%q) error %v, want: no error", tt.ini, err)
-			continue
-		}
-		if !reflect.DeepEqual(result, tt.want) {
-			t.Errorf("ParseINI(%q) = %#v, want: %#v", tt.ini, result, tt.want)
-		}
-	}
-}

vendor/golang.org/x/oauth2/internal/token.go

@@ -6,6 +6,7 @@ package internal
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -169,10 +170,6 @@ func providerAuthHeaderWorks(tokenURL string) bool {
 }
 
 func RetrieveToken(ctx context.Context, clientID, clientSecret, tokenURL string, v url.Values) (*Token, error) {
-	hc, err := ContextClient(ctx)
-	if err != nil {
-		return nil, err
-	}
 	bustedAuth := !providerAuthHeaderWorks(tokenURL)
 	if bustedAuth {
 		if clientID != "" {
@@ -190,7 +187,7 @@ func RetrieveToken(ctx context.Context, clientID, clientSecret, tokenURL string,
 	if !bustedAuth {
 		req.SetBasicAuth(url.QueryEscape(clientID), url.QueryEscape(clientSecret))
 	}
-	r, err := ctxhttp.Do(ctx, hc, req)
+	r, err := ctxhttp.Do(ctx, ContextClient(ctx), req)
 	if err != nil {
 		return nil, err
 	}
@@ -200,7 +197,10 @@ func RetrieveToken(ctx context.Context, clientID, clientSecret, tokenURL string,
 		return nil, fmt.Errorf("oauth2: cannot fetch token: %v", err)
 	}
 	if code := r.StatusCode; code < 200 || code > 299 {
-		return nil, fmt.Errorf("oauth2: cannot fetch token: %v\nResponse: %s", r.Status, body)
+		return nil, &RetrieveError{
+			Response: r,
+			Body:     body,
+		}
 	}
 
 	var token *Token
@@ -247,5 +247,17 @@ func RetrieveToken(ctx context.Context, clientID, clientSecret, tokenURL string,
 	if token.RefreshToken == "" {
 		token.RefreshToken = v.Get("refresh_token")
 	}
+	if token.AccessToken == "" {
+		return token, errors.New("oauth2: server response missing access_token")
+	}
 	return token, nil
 }
+
+type RetrieveError struct {
+	Response *http.Response
+	Body     []byte
+}
+
+func (r *RetrieveError) Error() string {
+	return fmt.Sprintf("oauth2: cannot fetch token: %v\nResponse: %s", r.Response.Status, r.Body)
+}

vendor/golang.org/x/oauth2/internal/token_test.go

@@ -6,6 +6,7 @@ package internal
 
 import (
 	"fmt"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"net/url"
@@ -32,6 +33,8 @@ func TestRetrieveTokenBustedNoSecret(t *testing.T) {
 		if got, want := r.FormValue("client_secret"), ""; got != want {
 			t.Errorf("client_secret = %q; want empty", got)
 		}
+		w.Header().Set("Content-Type", "application/json")
+		io.WriteString(w, `{"access_token": "ACCESS_TOKEN", "token_type": "bearer"}`)
 	}))
 	defer ts.Close()
 
@@ -82,7 +85,10 @@ func TestProviderAuthHeaderWorksDomain(t *testing.T) {
 func TestRetrieveTokenWithContexts(t *testing.T) {
 	const clientID = "client-id"
 
-	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {}))
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		io.WriteString(w, `{"access_token": "ACCESS_TOKEN", "token_type": "bearer"}`)
+	}))
 	defer ts.Close()
 
 	_, err := RetrieveToken(context.Background(), clientID, "", ts.URL, url.Values{})
@@ -90,14 +96,16 @@ func TestRetrieveTokenWithContexts(t *testing.T) {
 		t.Errorf("RetrieveToken (with background context) = %v; want no error", err)
 	}
 
-	ctx, cancelfunc := context.WithCancel(context.Background())
-
+	retrieved := make(chan struct{})
 	cancellingts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		cancelfunc()
+		<-retrieved
 	}))
 	defer cancellingts.Close()
 
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
 	_, err = RetrieveToken(ctx, clientID, "", cancellingts.URL, url.Values{})
+	close(retrieved)
 	if err == nil {
 		t.Errorf("RetrieveToken (with cancelled context) = nil; want error")
 	}

vendor/golang.org/x/oauth2/internal/transport.go

@@ -19,50 +19,16 @@ var HTTPClient ContextKey
 // because nobody else can create a ContextKey, being unexported.
 type ContextKey struct{}
 
-// ContextClientFunc is a func which tries to return an *http.Client
-// given a Context value. If it returns an error, the search stops
-// with that error.  If it returns (nil, nil), the search continues
-// down the list of registered funcs.
-type ContextClientFunc func(context.Context) (*http.Client, error)
+var appengineClientHook func(context.Context) *http.Client
 
-var contextClientFuncs []ContextClientFunc
-
-func RegisterContextClientFunc(fn ContextClientFunc) {
-	contextClientFuncs = append(contextClientFuncs, fn)
-}
-
-func ContextClient(ctx context.Context) (*http.Client, error) {
+func ContextClient(ctx context.Context) *http.Client {
 	if ctx != nil {
 		if hc, ok := ctx.Value(HTTPClient).(*http.Client); ok {
-			return hc, nil
+			return hc
 		}
 	}
-	for _, fn := range contextClientFuncs {
-		c, err := fn(ctx)
-		if err != nil {
-			return nil, err
-		}
-		if c != nil {
-			return c, nil
-		}
+	if appengineClientHook != nil {
+		return appengineClientHook(ctx)
 	}
-	return http.DefaultClient, nil
-}
-
-func ContextTransport(ctx context.Context) http.RoundTripper {
-	hc, err := ContextClient(ctx)
-	// This is a rare error case (somebody using nil on App Engine).
-	if err != nil {
-		return ErrorTransport{err}
-	}
-	return hc.Transport
-}
-
-// ErrorTransport returns the specified error on RoundTrip.
-// This RoundTripper should be used in rare error cases where
-// error handling can be postponed to response handling time.
-type ErrorTransport struct{ Err error }
-
-func (t ErrorTransport) RoundTrip(*http.Request) (*http.Response, error) {
-	return nil, t.Err
+	return http.DefaultClient
 }

vendor/golang.org/x/oauth2/internal/transport_test.go

@@ -1,38 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package internal
-
-import (
-	"net/http"
-	"testing"
-
-	"golang.org/x/net/context"
-)
-
-func TestContextClient(t *testing.T) {
-	rc := &http.Client{}
-	RegisterContextClientFunc(func(context.Context) (*http.Client, error) {
-		return rc, nil
-	})
-
-	c := &http.Client{}
-	ctx := context.WithValue(context.Background(), HTTPClient, c)
-
-	hc, err := ContextClient(ctx)
-	if err != nil {
-		t.Fatalf("want valid client; got err = %v", err)
-	}
-	if hc != c {
-		t.Fatalf("want context client = %p; got = %p", c, hc)
-	}
-
-	hc, err = ContextClient(context.TODO())
-	if err != nil {
-		t.Fatalf("want valid client; got err = %v", err)
-	}
-	if hc != rc {
-		t.Fatalf("want registered client = %p; got = %p", c, hc)
-	}
-}