Refactor Namespace Resolver

api/resolver/resolver.go

@@ -11,6 +11,12 @@ var (
 	ErrInvalidPath = errors.New("invalid path")
 )
 
+// NamespaceResolver resolves request to the namespace
+type NamespaceResolver interface {
+	Resolve(r *http.Request) string
+	String() string
+}
+
 // Resolver resolves requests to endpoints
 type Resolver interface {
 	Resolve(r *http.Request) (*Endpoint, error)
@@ -27,6 +33,8 @@ type Endpoint struct {
 	Method string
 	// HTTP Path e.g /greeter.
 	Path string
+	// Namespace, g.g. go.micro
+	Namespace string
 }
 
 type Options struct {

api/server/auth/auth.go

@@ -3,30 +3,22 @@ package auth
 import (
 	"context"
 	"fmt"
-	"net"
 	"net/http"
 	"net/url"
 	"strings"
 
 	"github.com/micro/go-micro/v2/api/resolver"
-	"github.com/micro/go-micro/v2/api/resolver/path"
 	"github.com/micro/go-micro/v2/auth"
 	"github.com/micro/go-micro/v2/logger"
-	"golang.org/x/net/publicsuffix"
 )
 
 // CombinedAuthHandler wraps a server and authenticates requests
-func CombinedAuthHandler(prefix, namespace string, r resolver.Resolver, h http.Handler) http.Handler {
+func CombinedAuthHandler(r resolver.Resolver, nr resolver.NamespaceResolver, h http.Handler) http.Handler {
-	if r == nil {
-		r = path.NewResolver()
-	}
-
 	return authHandler{
 		handler:    h,
 		resolver:   r,
+		nsResolver: nr,
 		auth:       auth.DefaultAuth,
-		servicePrefix: prefix,
-		namespace:     namespace,
 	}
 }
 
@@ -34,13 +26,12 @@ type authHandler struct {
 	handler    http.Handler
 	auth       auth.Auth
 	resolver   resolver.Resolver
-	namespace     string
+	nsResolver resolver.NamespaceResolver
-	servicePrefix string
 }
 
 func (h authHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 	// Determine the namespace and set it in the header
-	namespace := h.NamespaceFromRequest(req)
+	namespace := h.nsResolver.Resolve(req)
 	req.Header.Set(auth.NamespaceKey, namespace)
 
 	// Extract the token from the request
@@ -63,14 +54,7 @@ func (h authHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 	// account doesn't necesserially mean a forbidden request
 	acc, err := h.auth.Inspect(token)
 	if err != nil {
-		acc = &auth.Account{Namespace: namespace}
+		acc = &auth.Account{}
-	}
-
-	// Check the accounts namespace matches the namespace we're operating
-	// within. If not forbid the request and log the occurance.
-	if acc.Namespace != namespace {
-		logger.Debugf("Cross namespace request warning: account %v (%v) requested access to %v in the %v namespace", acc.ID, acc.Namespace, req.URL.Path, namespace)
-		// http.Error(w, "Forbidden namespace", 403)
 	}
 
 	// Determine the name of the service being requested
@@ -90,9 +74,9 @@ func (h authHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 	}
 
 	// construct the resource name, e.g. home => go.micro.web.home
-	resName := h.servicePrefix
+	resName := namespace
 	if len(endpoint.Name) > 0 {
-		resName = resName + "." + endpoint.Name
+		resName = namespace + "." + endpoint.Name
 	}
 
 	// determine the resource path. there is an inconsistency in how resolvers
@@ -127,59 +111,7 @@ func (h authHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 	}
 
 	// Redirect to the login path
-	params := url.Values{"redirect_to": {req.URL.Path}}
+	params := url.Values{"redirect_to": {req.URL.String()}}
 	loginWithRedirect := fmt.Sprintf("%v?%v", loginURL, params.Encode())
 	http.Redirect(w, req, loginWithRedirect, http.StatusTemporaryRedirect)
 }
-
-func (h authHandler) NamespaceFromRequest(req *http.Request) string {
-	// check to see what the provided namespace is, we only do
-	// domain mapping if the namespace is set to 'domain'
-	if h.namespace != "domain" {
-		return h.namespace
-	}
-
-	// determine the host, e.g. dev.micro.mu:8080
-	host := req.URL.Hostname()
-	if len(host) == 0 {
-		if h, _, err := net.SplitHostPort(req.Host); err == nil {
-			host = h // host does contain a port
-		} else if strings.Contains(err.Error(), "missing port in address") {
-			host = req.Host // host does not contain a port
-		}
-	}
-
-	// check for an ip address
-	if net.ParseIP(host) != nil {
-		return auth.DefaultNamespace
-	}
-
-	// check for dev enviroment
-	if host == "localhost" || host == "127.0.0.1" {
-		return auth.DefaultNamespace
-	}
-
-	// extract the top level domain plus one (e.g. 'myapp.com')
-	domain, err := publicsuffix.EffectiveTLDPlusOne(host)
-	if err != nil {
-		logger.Debugf("Unable to extract domain from %v", host)
-		return auth.DefaultNamespace
-	}
-
-	// check to see if the domain matches the host of micro.mu, in
-	// these cases we return the default namespace
-	if domain == host || domain == "micro.mu" {
-		return auth.DefaultNamespace
-	}
-
-	// remove the domain from the host, leaving the subdomain
-	subdomain := strings.TrimSuffix(host, "."+domain)
-
-	// return the reversed subdomain as the namespace
-	comps := strings.Split(subdomain, ".")
-	for i := len(comps)/2 - 1; i >= 0; i-- {
-		opp := len(comps) - 1 - i
-		comps[i], comps[opp] = comps[opp], comps[i]
-	}
-	return strings.Join(comps, ".")
-}

api/server/auth/auth_test.go

@@ -1,38 +0,0 @@
-package auth
-
-import (
-	"net/http"
-	"net/url"
-	"testing"
-
-	"github.com/micro/go-micro/v2/auth"
-)
-
-func TestNamespaceFromRequest(t *testing.T) {
-	tt := []struct {
-		Host      string
-		Namespace string
-	}{
-		{Host: "micro.mu", Namespace: auth.DefaultNamespace},
-		{Host: "micro.com.au", Namespace: auth.DefaultNamespace},
-		{Host: "web.micro.mu", Namespace: auth.DefaultNamespace},
-		{Host: "api.micro.mu", Namespace: auth.DefaultNamespace},
-		{Host: "myapp.com", Namespace: auth.DefaultNamespace},
-		{Host: "staging.myapp.com", Namespace: "staging"},
-		{Host: "staging.myapp.m3o.app", Namespace: "myapp.staging"},
-		{Host: "127.0.0.1", Namespace: auth.DefaultNamespace},
-		{Host: "localhost", Namespace: auth.DefaultNamespace},
-		{Host: "81.151.101.146", Namespace: auth.DefaultNamespace},
-	}
-
-	h := &authHandler{namespace: "domain"}
-
-	for _, tc := range tt {
-		t.Run(tc.Host, func(t *testing.T) {
-			ns := h.NamespaceFromRequest(&http.Request{Host: tc.Host, URL: &url.URL{Host: tc.Host}})
-			if ns != tc.Namespace {
-				t.Errorf("Expected namespace %v for host %v, actually got %v", tc.Namespace, tc.Host, ns)
-			}
-		})
-	}
-}

api/server/http/http.go

@@ -53,7 +53,7 @@ func (s *httpServer) Init(opts ...server.Option) error {
 
 func (s *httpServer) Handle(path string, handler http.Handler) {
 	h := handlers.CombinedLoggingHandler(os.Stdout, handler)
-	h = auth.CombinedAuthHandler(s.opts.ServicePrefix, s.opts.Namespace, s.opts.Resolver, handler)
+	h = auth.CombinedAuthHandler(s.opts.Resolver, s.opts.NamespaceResolver, handler)
 
 	if s.opts.EnableCORS {
 		h = cors.CombinedCORSHandler(h)

api/server/options.go

@@ -17,8 +17,7 @@ type Options struct {
 	ACMEHosts         []string
 	TLSConfig         *tls.Config
 	Resolver          resolver.Resolver
-	Namespace     string
+	NamespaceResolver resolver.NamespaceResolver
-	ServicePrefix string
 }
 
 func EnableCORS(b bool) Option {
@@ -57,20 +56,14 @@ func TLSConfig(t *tls.Config) Option {
 	}
 }
 
-func ServicePrefix(n string) Option {
-	return func(o *Options) {
-		o.ServicePrefix = n
-	}
-}
-
-func Namespace(n string) Option {
-	return func(o *Options) {
-		o.Namespace = n
-	}
-}
-
 func Resolver(r resolver.Resolver) Option {
 	return func(o *Options) {
 		o.Resolver = r
 	}
 }
+
+func NamespaceResolver(r resolver.NamespaceResolver) Option {
+	return func(o *Options) {
+		o.NamespaceResolver = r
+	}
+}

auth/service/service.go

@@ -158,6 +158,11 @@ func (s *svc) Revoke(role string, res *auth.Resource) error {
 
 // Verify an account has access to a resource
 func (s *svc) Verify(acc *auth.Account, res *auth.Resource) error {
+	// set the namespace on the resource
+	if len(res.Namespace) == 0 {
+		res.Namespace = s.Options().Namespace
+	}
+
 	queries := [][]string{
 		{res.Namespace, res.Type, res.Name, res.Endpoint}, // check for specific role, e.g. service.foo.ListFoo:admin (role is checked in accessForRule)
 		{res.Namespace, res.Type, res.Name, "*"},          // check for wildcard endpoint, e.g. service.foo*
@@ -205,16 +210,15 @@ func (s *svc) Verify(acc *auth.Account, res *auth.Resource) error {
 func (s *svc) Inspect(token string) (*auth.Account, error) {
 	// try to decode JWT locally and fall back to srv if an error occurs
 	if len(strings.Split(token, ".")) == 3 && s.jwt != nil {
-		if acc, err := s.jwt.Inspect(token); err == nil {
+		return s.jwt.Inspect(token)
-			return acc, nil
-		}
 	}
 
+	// the token is not a JWT or we do not have the keys to decode it,
+	// fall back to the auth service
 	rsp, err := s.auth.Inspect(context.TODO(), &pb.InspectRequest{Token: token})
 	if err != nil {
 		return nil, err
 	}
-
 	return serializeAccount(rsp.Account), nil
 }
 

go.sum

@@ -399,6 +399,7 @@ go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
 go.uber.org/multierr v1.3.0 h1:sFPn2GLc3poCkfrpIXGhBD2X0CMIo4Q/zSULXrj/+uc=
 go.uber.org/multierr v1.3.0/go.mod h1:VgVr7evmIr6uPjLBxg28wmKNXyqE9akIJ5XnfpiKl+4=
 go.uber.org/ratelimit v0.0.0-20180316092928-c15da0234277/go.mod h1:2X8KaoNd1J0lZV+PxJk/5+DGbO/tpwLR1m++a7FnB/Y=
+go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee h1:0mgffUl7nfd+FpvXMVz4IDEaUSmT1ysygQC7qYo7sG4=
 go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
 go.uber.org/zap v1.13.0 h1:nR6NoDBgAf67s68NhaXbsojM+2gxp3S1hWkHDl27pVU=
 go.uber.org/zap v1.13.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=
@@ -432,6 +433,7 @@ golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHl
 golang.org/x/lint v0.0.0-20190409202823-959b441ac422/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/lint v0.0.0-20190909230951-414d861bb4ac/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
+golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f h1:J5lckAjkw6qYlOZNj90mLYNTEKDvWeuc1yieZ8qUzUE=
 golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f/go.mod h1:5qLYkcX4OjUUV8bRuDixDT3tpyyb+LUpUlRWLxfhWrs=
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
 golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod h1:E/iHnbuqvinMTCcRqshq8CkpyQDoeVncDDYHnLhea+o=
@@ -529,6 +531,7 @@ golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191125144606-a911d9008d1f/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191216052735-49a3e744a425/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.0.0-20191216173652-a0e659d51361 h1:RIIXAeV6GvDBuADKumTODatUqANFZ+5BPMnzsy4hulY=
 golang.org/x/tools v0.0.0-20191216173652-a0e659d51361/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -600,6 +603,7 @@ honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 k8s.io/kubernetes v1.13.0/go.mod h1:ocZa8+6APFNC2tX1DZASIbocyYT5jHzqFVsY5aoB7Jk=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=

util/wrapper/wrapper.go

@@ -9,7 +9,6 @@ import (
 	"github.com/micro/go-micro/v2/debug/stats"
 	"github.com/micro/go-micro/v2/debug/trace"
 	"github.com/micro/go-micro/v2/errors"
-	"github.com/micro/go-micro/v2/logger"
 	"github.com/micro/go-micro/v2/metadata"
 	"github.com/micro/go-micro/v2/server"
 )
@@ -155,11 +154,6 @@ func AuthHandler(fn func() auth.Auth) server.HandlerWrapper {
 				return h(ctx, req, rsp)
 			}
 
-			// Check for auth service endpoints which should be excluded from auth
-			if strings.HasPrefix(req.Endpoint(), "Auth.") {
-				return h(ctx, req, rsp)
-			}
-
 			// Extract the token if present. Note: if noop is being used
 			// then the token can be blank without erroring
 			var token string
@@ -172,25 +166,10 @@ func AuthHandler(fn func() auth.Auth) server.HandlerWrapper {
 				token = header[len(auth.BearerScheme):]
 			}
 
-			// Get the namespace for the request
-			namespace, ok := metadata.Get(ctx, auth.NamespaceKey)
-			if !ok {
-				logger.Debugf("Missing request namespace")
-				namespace = auth.DefaultNamespace
-			}
-
 			// Inspect the token and get the account
 			account, err := a.Inspect(token)
 			if err != nil {
-				account = &auth.Account{Namespace: namespace}
+				account = &auth.Account{}
-			}
-
-			// Check the accounts namespace matches the namespace we're operating
-			// within. If not forbid the request and log the occurance.
-			if account.Namespace != namespace {
-				logger.Debugf("Cross namespace request forbidden: account %v (%v) requested access to %v %v in the %v namespace",
-					account.ID, account.Namespace, req.Service(), req.Endpoint(), namespace)
-				// return errors.Forbidden(req.Service(), "cross namespace request")
 			}
 
 			// construct the resource
@@ -198,7 +177,6 @@ func AuthHandler(fn func() auth.Auth) server.HandlerWrapper {
 				Type:     "service",
 				Name:     req.Service(),
 				Endpoint: req.Endpoint(),
-				Namespace: namespace,
 			}
 
 			// Verify the caller has access to the resource