Merge pull request #1471 from micro/namespace

Detect & Propagate Namespace

api/server/auth/auth.go

@@ -2,11 +2,13 @@ package auth
 
 import (
 	"fmt"
+	"net"
 	"net/http"
 	"net/url"
 	"strings"
 
 	"github.com/micro/go-micro/v2/auth"
+	"github.com/micro/go-micro/v2/logger"
 )
 
 // CombinedAuthHandler wraps a server and authenticates requests
@@ -23,6 +25,16 @@ type authHandler struct {
 }
 
 func (h authHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
+	// Determine the namespace
+	namespace, err := namespaceFromRequest(req)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	// Set the namespace in the header
+	req.Header.Set(auth.NamespaceKey, namespace)
+
 	// Extract the token from the request
 	var token string
 	if header := req.Header.Get("Authorization"); len(header) > 0 {
@@ -43,23 +55,33 @@ 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{}
+		acc = &auth.Account{Namespace: namespace}
 	}
+
+	// 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.Warnf("Cross namespace request forbidden: account %v (%v) requested access to %v in the %v namespace", acc.ID, acc.Namespace, req.URL.Path, namespace)
+		w.WriteHeader(http.StatusForbidden)
+	}
+
+	// Perform the verification check to see if the account has access to
+	// the resource they're requesting
 	err = h.auth.Verify(acc, &auth.Resource{
 		Type:      "service",
 		Name:      "go.micro.web",
 		Endpoint:  req.URL.Path,
+		Namespace: namespace,
 	})
 
-	// The account has the necessary permissions to access the
+	// The account has the necessary permissions to access the resource
-	// resource
 	if err == nil {
 		h.handler.ServeHTTP(w, req)
 		return
 	}
 
-	// The account is set, but they don't have enough permissions,
+	// The account is set, but they don't have enough permissions, hence
-	// hence we 403.
+	// we return a forbidden error.
 	if len(acc.ID) > 0 {
 		w.WriteHeader(http.StatusForbidden)
 		return
@@ -77,3 +99,36 @@ func (h authHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 	loginWithRedirect := fmt.Sprintf("%v?%v", loginURL, params.Encode())
 	http.Redirect(w, req, loginWithRedirect, http.StatusTemporaryRedirect)
 }
+
+func namespaceFromRequest(req *http.Request) (string, error) {
+	// check for an ip address
+	if net.ParseIP(req.Host) != nil {
+		return auth.DefaultNamespace, nil
+	}
+
+	// split the host to remove the port
+	host, _, err := net.SplitHostPort(req.Host)
+	if err != nil {
+		return "", err
+	}
+
+	// check for dev enviroment
+	if host == "localhost" || host == "127.0.0.1" {
+		return auth.DefaultNamespace, nil
+	}
+
+	// if host is not a subdomain, deturn default namespace
+	comps := strings.Split(host, ".")
+	if len(comps) != 3 {
+		return auth.DefaultNamespace, nil
+	}
+
+	// check for the micro.mu domain
+	domain := fmt.Sprintf("%v.%v", comps[1], comps[2])
+	if domain == "micro.mu" {
+		return auth.DefaultNamespace, nil
+	}
+
+	// return the subdomain as the host
+	return comps[0], nil
+}

auth/auth.go

@@ -21,8 +21,6 @@ var (
 	ErrInvalidRole = errors.New("invalid role")
 	// ErrForbidden is returned when a user does not have the necessary roles to access a resource
 	ErrForbidden = errors.New("resource forbidden")
-	// BearerScheme used for Authorization header
-	BearerScheme = "Bearer "
 )
 
 // Auth providers authentication and authorization
@@ -50,11 +48,13 @@ type Auth interface {
 // Resource is an entity such as a user or
 type Resource struct {
 	// Name of the resource
-	Name string
+	Name string `json:"name"`
 	// Type of resource, e.g.
-	Type string
+	Type string `json:"type"`
 	// Endpoint resource e.g NotesService.Create
-	Endpoint string
+	Endpoint string `json:"endpoint"`
+	// Namespace the resource belongs to
+	Namespace string `json:"namespace"`
 }
 
 // Account provided by an auth provider
@@ -69,7 +69,7 @@ type Account struct {
 	Roles []string `json:"roles"`
 	// Any other associated metadata
 	Metadata map[string]string `json:"metadata"`
-	// Namespace the account belongs to, default blank
+	// Namespace the account belongs to
 	Namespace string `json:"namespace"`
 	// Secret for the account, e.g. the password
 	Secret string `json:"secret"`
@@ -88,12 +88,18 @@ type Token struct {
 }
 
 const (
+	// DefaultNamespace used for auth
+	DefaultNamespace = "micro"
+	// NamespaceKey is the key used when storing the namespace in metadata
+	NamespaceKey = "Micro-Namespace"
 	// MetadataKey is the key used when storing the account in metadata
 	MetadataKey = "auth-account"
 	// TokenCookieName is the name of the cookie which stores the auth token
 	TokenCookieName = "micro-token"
 	// SecretCookieName is the name of the cookie which stores the auth secret
 	SecretCookieName = "micro-secret"
+	// BearerScheme used for Authorization header
+	BearerScheme = "Bearer "
 )
 
 // AccountFromContext gets the account from the context, which

auth/default.go

@@ -42,6 +42,7 @@ func (n *noop) Generate(id string, opts ...GenerateOption) (*Account, error) {
 		Roles:     options.Roles,
 		Secret:    options.Secret,
 		Metadata:  options.Metadata,
+		Namespace: DefaultNamespace,
 	}, nil
 }
 
@@ -64,6 +65,7 @@ func (n *noop) Verify(acc *Account, res *Resource) error {
 func (n *noop) Inspect(token string) (*Account, error) {
 	return &Account{
 		ID:        uuid.New().String(),
+		Namespace: DefaultNamespace,
 	}, nil
 }
 

auth/service/proto/auth.pb.go

@@ -272,6 +272,7 @@ type Resource struct {
 	Name                 string   `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
 	Type                 string   `protobuf:"bytes,2,opt,name=type,proto3" json:"type,omitempty"`
 	Endpoint             string   `protobuf:"bytes,3,opt,name=endpoint,proto3" json:"endpoint,omitempty"`
+	Namespace            string   `protobuf:"bytes,4,opt,name=namespace,proto3" json:"namespace,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -323,6 +324,13 @@ func (m *Resource) GetEndpoint() string {
 	return ""
 }
 
+func (m *Resource) GetNamespace() string {
+	if m != nil {
+		return m.Namespace
+	}
+	return ""
+}
+
 type GenerateRequest struct {
 	Id                   string            `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
 	Roles                []string          `protobuf:"bytes,2,rep,name=roles,proto3" json:"roles,omitempty"`
@@ -1123,12 +1131,12 @@ func init() {
 }
 
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+	0x32, 0xc7, 0xff, 0x18, 0xd0, 0x3a, 0xce, 0xf9, 0x29, 0x79, 0x01, 0x5d, 0xbd, 0x91, 0xc8, 0xbd,
-	0xb7, 0xda, 0x15, 0x9e, 0x1d, 0xf2, 0x1c, 0x3a, 0xea, 0x72, 0x92, 0xbb, 0x35, 0xef, 0xea, 0xe5,
+	0xb7, 0x2f, 0x5e, 0xf7, 0xfd, 0xad, 0x76, 0x85, 0x67, 0x87, 0x3c, 0x87, 0x8e, 0xba, 0x9c, 0xe4,
-	0x76, 0xef, 0x6d, 0x33, 0x97, 0xb1, 0x26, 0xfa, 0xf5, 0x70, 0xbb, 0xf1, 0x32, 0xa8, 0x38, 0x77,
+	0x6e, 0xcd, 0xbb, 0x7a, 0xb9, 0xdd, 0x7b, 0xdb, 0xcc, 0x65, 0xac, 0x89, 0x7e, 0x5b, 0xdc, 0x6e,
-	0x9a, 0x8d, 0x3a, 0xca, 0xf8, 0x47, 0xe8, 0xea, 0xc7, 0x0c, 0xf9, 0x0e, 0x5a, 0x05, 0xc1, 0xc4,
+	0xbc, 0x0c, 0x2a, 0xce, 0x9d, 0x66, 0xa3, 0x8e, 0x32, 0xfe, 0x11, 0xba, 0xfa, 0xa9, 0x43, 0xbe,
-	0xab, 0x7d, 0xd3, 0xf0, 0x10, 0x72, 0x1f, 0xbc, 0xd5, 0xa7, 0x0c, 0xff, 0xb7, 0x01, 0xed, 0xa2,
+	0x83, 0x56, 0x41, 0x30, 0xf1, 0x6a, 0xdf, 0x34, 0x3c, 0x93, 0xdc, 0x07, 0x6f, 0xf5, 0x29, 0xc3,
-	0x11, 0x8c, 0xcc, 0xc0, 0x96, 0xa3, 0x47, 0xea, 0x25, 0x55, 0xae, 0x86, 0x7b, 0x77, 0x8b, 0xb5,
+	0xff, 0x6d, 0x40, 0xbb, 0x68, 0x04, 0x23, 0x33, 0xb0, 0xe5, 0xe8, 0x91, 0x7a, 0x49, 0x95, 0xab,
-	0xc4, 0x3d, 0x03, 0x5b, 0xce, 0xc9, 0x46, 0xa0, 0xca, 0x1c, 0x6f, 0x04, 0xaa, 0x0d, 0xd7, 0x0e,
+	0xe1, 0xde, 0xdd, 0x62, 0x2d, 0x71, 0xcf, 0xc0, 0x96, 0x73, 0xb2, 0x11, 0xa8, 0x32, 0xc7, 0x1b,
-	0x39, 0x56, 0x70, 0xdd, 0x06, 0x28, 0x3a, 0xc8, 0xed, 0x46, 0x9b, 0x0e, 0xf1, 0xc6, 0x16, 0x6f,
+	0x81, 0x6a, 0xc3, 0xb5, 0x43, 0x8e, 0x15, 0x5c, 0xb7, 0x01, 0x8a, 0x0e, 0x72, 0xbb, 0xd1, 0xa6,
-	0xc7, 0xc7, 0xff, 0x06, 0x00, 0x00, 0xff, 0xff, 0x4b, 0x8f, 0xf4, 0x22, 0x76, 0x0a, 0x00, 0x00,
+	0x43, 0xbc, 0xb1, 0xc5, 0xcb, 0xf2, 0xf1, 0xbf, 0x01, 0x00, 0x00, 0xff, 0xff, 0xfa, 0x51, 0x05,
+	0x6e, 0x94, 0x0a, 0x00, 0x00,
 }

auth/service/proto/auth.proto

@@ -46,6 +46,7 @@ message Resource{
 	string name = 1;
 	string type = 2;
 	string endpoint = 3;
+	string namespace = 4;
 }
 
 message GenerateRequest {

auth/service/service.go

@@ -132,6 +132,7 @@ func (s *svc) Grant(role string, res *auth.Resource) error {
 		Role:   role,
 		Access: pb.Access_GRANTED,
 		Resource: &pb.Resource{
+			Namespace: res.Namespace,
 			Type:      res.Type,
 			Name:      res.Name,
 			Endpoint:  res.Endpoint,
@@ -146,6 +147,7 @@ func (s *svc) Revoke(role string, res *auth.Resource) error {
 		Role:   role,
 		Access: pb.Access_GRANTED,
 		Resource: &pb.Resource{
+			Namespace: res.Namespace,
 			Type:      res.Type,
 			Name:      res.Name,
 			Endpoint:  res.Endpoint,
@@ -157,10 +159,11 @@ 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 {
 	queries := [][]string{
-		{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, res.Endpoint}, // check for specific role, e.g. service.foo.ListFoo:admin (role is checked in accessForRule)
-		{res.Type, res.Name, "*"},          // check for wildcard endpoint, e.g. service.foo*
+		{res.Namespace, res.Type, res.Name, "*"},          // check for wildcard endpoint, e.g. service.foo*
-		{res.Type, "*"},                    // check for wildcard name, e.g. service.*
+		{res.Namespace, res.Type, "*"},                    // check for wildcard name, e.g. service.*
-		{"*"},                              // check for wildcard type, e.g. *
+		{res.Namespace, "*"},                              // check for wildcard type, e.g. *
+		{"*"},                                             // check for wildcard namespace
 	}
 
 	// endpoint is a url which can have wildcard excludes, e.g.
@@ -172,23 +175,29 @@ func (s *svc) Verify(acc *auth.Account, res *auth.Resource) error {
 		}
 	}
 
+	// set a default account id to log
+	logID := acc.ID
+	if len(logID) == 0 {
+		logID = "[no account]"
+	}
+
 	for _, q := range queries {
 		for _, rule := range s.listRules(q...) {
 			switch accessForRule(rule, acc, res) {
 			case pb.Access_UNKNOWN:
 				continue // rule did not specify access, check the next rule
 			case pb.Access_GRANTED:
-				log.Infof("%v granted access to %v:%v:%v by rule %v", acc.ID, res.Type, res.Name, res.Endpoint, rule.Id)
+				log.Infof("%v:%v granted access to %v:%v:%v:%v by rule %v", acc.Namespace, logID, res.Namespace, res.Type, res.Name, res.Endpoint, rule.Id)
 				return nil // rule grants the account access to the resource
 			case pb.Access_DENIED:
-				log.Infof("%v denied access to %v:%v:%v by rule %v", acc.ID, res.Type, res.Name, res.Endpoint, rule.Id)
+				log.Infof("%v:%v denied access to %v:%v:%v:%v by rule %v", acc.Namespace, logID, res.Namespace, res.Type, res.Name, res.Endpoint, rule.Id)
 				return auth.ErrForbidden // rule denies access to the resource
 			}
 		}
 	}
 
 	// no rules were found for the resource, default to denying access
-	log.Infof("%v denied access to %v:%v:%v by lack of rule (%v rules found)", acc.ID, res.Type, res.Name, res.Endpoint, len(s.rules))
+	log.Infof("%v:%v denied access to %v:%v:%v:%v by lack of rule (%v rules found for namespace)", acc.Namespace, logID, res.Namespace, res.Type, res.Name, res.Endpoint, len(s.listRules(res.Namespace)))
 	return auth.ErrForbidden
 }
 
@@ -249,19 +258,28 @@ func accessForRule(rule *pb.Rule, acc *auth.Account, res *auth.Resource) pb.Acce
 	return pb.Access_UNKNOWN
 }
 
-// listRules gets all the rules from the store which have an id
+// listRules gets all the rules from the store which match the filters.
-// prefix matching the filters
+// filters are namespace, type, name and then endpoint.
 func (s *svc) listRules(filters ...string) []*pb.Rule {
 	s.Lock()
 	defer s.Unlock()
 
-	prefix := strings.Join(filters, ruleJoinKey)
-
 	var rules []*pb.Rule
 	for _, r := range s.rules {
-		if strings.HasPrefix(r.Id, prefix) {
+		if len(filters) > 0 && r.Resource.Namespace != filters[0] {
-			rules = append(rules, r)
+			continue
 		}
+		if len(filters) > 1 && r.Resource.Type != filters[1] {
+			continue
+		}
+		if len(filters) > 2 && r.Resource.Name != filters[2] {
+			continue
+		}
+		if len(filters) > 3 && r.Resource.Endpoint != filters[3] {
+			continue
+		}
+
+		rules = append(rules, r)
 	}
 
 	return rules

config/cmd/cmd.go

@@ -494,6 +494,7 @@ func (c *cmd) Before(ctx *cli.Context) error {
 
 		*c.opts.Auth = a()
 		clientOpts = append(clientOpts, client.Auth(*c.opts.Auth))
+		serverOpts = append(serverOpts, server.Auth(*c.opts.Auth))
 	}
 
 	// Set the profile

server/grpc/options.go

@@ -5,6 +5,7 @@ import (
 	"crypto/tls"
 	"net"
 
+	"github.com/micro/go-micro/v2/auth"
 	"github.com/micro/go-micro/v2/broker"
 	"github.com/micro/go-micro/v2/codec"
 	"github.com/micro/go-micro/v2/registry"
@@ -66,6 +67,7 @@ func MaxMsgSize(s int) server.Option {
 
 func newOptions(opt ...server.Option) server.Options {
 	opts := server.Options{
+		Auth:      auth.DefaultAuth,
 		Codecs:    make(map[string]codec.NewCodec),
 		Metadata:  map[string]string{},
 		Broker:    broker.DefaultBroker,

server/options.go

@@ -60,6 +60,10 @@ func newOptions(opt ...Option) Options {
 		o(&opts)
 	}
 
+	if opts.Auth == nil {
+		opts.Auth = auth.DefaultAuth
+	}
+
 	if opts.Broker == nil {
 		opts.Broker = broker.DefaultBroker
 	}

service.go

@@ -34,8 +34,9 @@ func newService(opts ...Option) Service {
 	// service name
 	serviceName := options.Server.Options().Name
 
-	// TODO: better accessors
+	// authFn returns the auth, we pass as a function since auth
-	authFn := func() auth.Auth { return service.opts.Auth }
+	// has not yet been set at this point.
+	authFn := func() auth.Auth { return options.Server.Options().Auth }
 
 	// wrap client to inject From-Service header on any calls
 	options.Client = wrapper.FromService(serviceName, options.Client, authFn)

util/wrapper/wrapper.go

@@ -9,6 +9,7 @@ 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"
 )
@@ -165,24 +166,47 @@ func AuthHandler(fn func() auth.Auth) server.HandlerWrapper {
 			if header, ok := metadata.Get(ctx, "Authorization"); ok {
 				// Ensure the correct scheme is being used
 				if !strings.HasPrefix(header, auth.BearerScheme) {
-					return errors.Unauthorized("go.micro.auth", "invalid authorization header. expected Bearer schema")
+					return errors.Unauthorized(req.Service(), "invalid authorization header. expected Bearer schema")
 				}
 
 				token = header[len(auth.BearerScheme):]
 			}
 
+			// Get the namespace for the request
+			namespace, ok := metadata.Get(ctx, auth.NamespaceKey)
+			if !ok {
+				logger.Errorf("Missing request namespace")
+				namespace = auth.DefaultNamespace
+			}
+
 			// Inspect the token and get the account
 			account, err := a.Inspect(token)
 			if err != nil {
-				account = &auth.Account{}
+				account = &auth.Account{Namespace: namespace}
+			}
+
+			// 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.Warnf("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
+			res := &auth.Resource{
+				Type:      "service",
+				Name:      req.Service(),
+				Endpoint:  req.Endpoint(),
+				Namespace: namespace,
 			}
 
 			// Verify the caller has access to the resource
-			err = a.Verify(account, &auth.Resource{Type: "service", Name: req.Service(), Endpoint: req.Endpoint()})
+			err = a.Verify(account, res)
 			if err != nil && len(account.ID) > 0 {
-				return errors.Forbidden("go.micro.auth", "Forbidden call made to %v:%v by %v", req.Service(), req.Endpoint(), account.ID)
+				return errors.Forbidden(req.Service(), "Forbidden call made to %v:%v by %v", req.Service(), req.Endpoint(), account.ID)
 			} else if err != nil {
-				return errors.Unauthorized("go.micro.auth", "Unauthorised call made to %v:%v", req.Service(), req.Endpoint())
+				return errors.Unauthorized(req.Service(), "Unauthorised call made to %v:%v", req.Service(), req.Endpoint())
 			}
 
 			// There is an account, set it in the context