Merge pull request #373 from restanrm/feat-email-in-acls

CHANGELOG.md

@@ -10,6 +10,7 @@
 **Features**:
 
 - Add support for writing ACL files with YAML [#359](https://github.com/juanfont/headscale/pull/359)
+- Users can now use emails in ACL's groups [#372](https://github.com/juanfont/headscale/issues/372)
 
 **Changes**:
 

acls.go

@@ -160,7 +160,7 @@ func (h *Headscale) generateACLPolicySrcIP(
 	aclPolicy ACLPolicy,
 	u string,
 ) ([]string, error) {
-	return expandAlias(machines, aclPolicy, u)
+	return expandAlias(machines, aclPolicy, u, h.cfg.OIDC.StripEmaildomain)
 }
 
 func (h *Headscale) generateACLPolicyDestPorts(
@@ -186,7 +186,12 @@ func (h *Headscale) generateACLPolicyDestPorts(
 		alias = fmt.Sprintf("%s:%s", tokens[0], tokens[1])
 	}
 
-	expanded, err := expandAlias(machines, aclPolicy, alias)
+	expanded, err := expandAlias(
+		machines,
+		aclPolicy,
+		alias,
+		h.cfg.OIDC.StripEmaildomain,
+	)
 	if err != nil {
 		return nil, err
 	}
@@ -218,6 +223,7 @@ func expandAlias(
 	machines []Machine,
 	aclPolicy ACLPolicy,
 	alias string,
+	stripEmailDomain bool,
 ) ([]string, error) {
 	ips := []string{}
 	if alias == "*" {
@@ -225,7 +231,7 @@ func expandAlias(
 	}
 
 	if strings.HasPrefix(alias, "group:") {
-		namespaces, err := expandGroup(aclPolicy, alias)
+		namespaces, err := expandGroup(aclPolicy, alias, stripEmailDomain)
 		if err != nil {
 			return ips, err
 		}
@@ -240,7 +246,7 @@ func expandAlias(
 	}
 
 	if strings.HasPrefix(alias, "tag:") {
-		owners, err := expandTagOwners(aclPolicy, alias)
+		owners, err := expandTagOwners(aclPolicy, alias, stripEmailDomain)
 		if err != nil {
 			return ips, err
 		}
@@ -396,7 +402,11 @@ func filterMachinesByNamespace(machines []Machine, namespace string) []Machine {
 
 // expandTagOwners will return a list of namespace. An owner can be either a namespace or a group
 // a group cannot be composed of groups.
-func expandTagOwners(aclPolicy ACLPolicy, tag string) ([]string, error) {
+func expandTagOwners(
+	aclPolicy ACLPolicy,
+	tag string,
+	stripEmailDomain bool,
+) ([]string, error) {
 	var owners []string
 	ows, ok := aclPolicy.TagOwners[tag]
 	if !ok {
@@ -408,7 +418,7 @@ func expandTagOwners(aclPolicy ACLPolicy, tag string) ([]string, error) {
 	}
 	for _, owner := range ows {
 		if strings.HasPrefix(owner, "group:") {
-			gs, err := expandGroup(aclPolicy, owner)
+			gs, err := expandGroup(aclPolicy, owner, stripEmailDomain)
 			if err != nil {
 				return []string{}, err
 			}
@@ -423,8 +433,13 @@ func expandTagOwners(aclPolicy ACLPolicy, tag string) ([]string, error) {
 
 // expandGroup will return the list of namespace inside the group
 // after some validation.
-func expandGroup(aclPolicy ACLPolicy, group string) ([]string, error) {
+func expandGroup(
-	groups, ok := aclPolicy.Groups[group]
+	aclPolicy ACLPolicy,
+	group string,
+	stripEmailDomain bool,
+) ([]string, error) {
+	outGroups := []string{}
+	aclGroups, ok := aclPolicy.Groups[group]
 	if !ok {
 		return []string{}, fmt.Errorf(
 			"group %v isn't registered. %w",
@@ -432,14 +447,23 @@ func expandGroup(aclPolicy ACLPolicy, group string) ([]string, error) {
 			errInvalidGroup,
 		)
 	}
-	for _, g := range groups {
+	for _, group := range aclGroups {
-		if strings.HasPrefix(g, "group:") {
+		if strings.HasPrefix(group, "group:") {
 			return []string{}, fmt.Errorf(
 				"%w. A group cannot be composed of groups. https://tailscale.com/kb/1018/acls/#groups",
 				errInvalidGroup,
 			)
 		}
+		grp, err := NormalizeNamespaceName(group, stripEmailDomain)
+		if err != nil {
+			return []string{}, fmt.Errorf(
+				"failed to normalize group %q, err: %w",
+				group,
+				errInvalidGroup,
+			)
+		}
+		outGroups = append(outGroups, grp)
 	}
 
-	return groups, nil
+	return outGroups, nil
 }

acls_test.go

@@ -432,6 +432,7 @@ func Test_expandGroup(t *testing.T) {
 	type args struct {
 		aclPolicy        ACLPolicy
 		group            string
+		stripEmailDomain bool
 	}
 	tests := []struct {
 		name    string
@@ -449,6 +450,7 @@ func Test_expandGroup(t *testing.T) {
 					},
 				},
 				group:            "group:test",
+				stripEmailDomain: true,
 			},
 			want:    []string{"user1", "user2", "user3"},
 			wantErr: false,
@@ -463,14 +465,53 @@ func Test_expandGroup(t *testing.T) {
 					},
 				},
 				group:            "group:undefined",
+				stripEmailDomain: true,
 			},
 			want:    []string{},
 			wantErr: true,
 		},
+		{
+			name: "Expand emails in group",
+			args: args{
+				aclPolicy: ACLPolicy{
+					Groups: Groups{
+						"group:admin": []string{
+							"joe.bar@gmail.com",
+							"john.doe@yahoo.fr",
+						},
+					},
+				},
+				group:            "group:admin",
+				stripEmailDomain: true,
+			},
+			want:    []string{"joe.bar", "john.doe"},
+			wantErr: false,
+		},
+		{
+			name: "Expand emails in group",
+			args: args{
+				aclPolicy: ACLPolicy{
+					Groups: Groups{
+						"group:admin": []string{
+							"joe.bar@gmail.com",
+							"john.doe@yahoo.fr",
+						},
+					},
+				},
+				group:            "group:admin",
+				stripEmailDomain: false,
+			},
+			want:    []string{"joe.bar.gmail.com", "john.doe.yahoo.fr"},
+			wantErr: false,
+		},
 	}
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
-			got, err := expandGroup(test.args.aclPolicy, test.args.group)
+			got, err := expandGroup(
+				test.args.aclPolicy,
+				test.args.group,
+				test.args.stripEmailDomain,
+			)
 			if (err != nil) != test.wantErr {
 				t.Errorf("expandGroup() error = %v, wantErr %v", err, test.wantErr)
 
@@ -487,6 +528,7 @@ func Test_expandTagOwners(t *testing.T) {
 	type args struct {
 		aclPolicy        ACLPolicy
 		tag              string
+		stripEmailDomain bool
 	}
 	tests := []struct {
 		name    string
@@ -501,6 +543,7 @@ func Test_expandTagOwners(t *testing.T) {
 					TagOwners: TagOwners{"tag:test": []string{"user1"}},
 				},
 				tag:              "tag:test",
+				stripEmailDomain: true,
 			},
 			want:    []string{"user1"},
 			wantErr: false,
@@ -513,6 +556,7 @@ func Test_expandTagOwners(t *testing.T) {
 					TagOwners: TagOwners{"tag:test": []string{"group:foo"}},
 				},
 				tag:              "tag:test",
+				stripEmailDomain: true,
 			},
 			want:    []string{"user1", "user2"},
 			wantErr: false,
@@ -525,6 +569,7 @@ func Test_expandTagOwners(t *testing.T) {
 					TagOwners: TagOwners{"tag:test": []string{"group:foo", "user3"}},
 				},
 				tag:              "tag:test",
+				stripEmailDomain: true,
 			},
 			want:    []string{"user1", "user2", "user3"},
 			wantErr: false,
@@ -536,6 +581,7 @@ func Test_expandTagOwners(t *testing.T) {
 					TagOwners: TagOwners{"tag:foo": []string{"group:foo", "user1"}},
 				},
 				tag:              "tag:test",
+				stripEmailDomain: true,
 			},
 			want:    []string{},
 			wantErr: true,
@@ -548,6 +594,7 @@ func Test_expandTagOwners(t *testing.T) {
 					TagOwners: TagOwners{"tag:test": []string{"group:foo", "user2"}},
 				},
 				tag:              "tag:test",
+				stripEmailDomain: true,
 			},
 			want:    []string{},
 			wantErr: true,
@@ -555,7 +602,11 @@ func Test_expandTagOwners(t *testing.T) {
 	}
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
-			got, err := expandTagOwners(test.args.aclPolicy, test.args.tag)
+			got, err := expandTagOwners(
+				test.args.aclPolicy,
+				test.args.tag,
+				test.args.stripEmailDomain,
+			)
 			if (err != nil) != test.wantErr {
 				t.Errorf("expandTagOwners() error = %v, wantErr %v", err, test.wantErr)
 
@@ -720,6 +771,7 @@ func Test_expandAlias(t *testing.T) {
 		machines         []Machine
 		aclPolicy        ACLPolicy
 		alias            string
+		stripEmailDomain bool
 	}
 	tests := []struct {
 		name    string
@@ -740,6 +792,7 @@ func Test_expandAlias(t *testing.T) {
 					},
 				},
 				aclPolicy:        ACLPolicy{},
+				stripEmailDomain: true,
 			},
 			want:    []string{"*"},
 			wantErr: false,
@@ -777,6 +830,7 @@ func Test_expandAlias(t *testing.T) {
 				aclPolicy: ACLPolicy{
 					Groups: Groups{"group:accountant": []string{"joe", "marc"}},
 				},
+				stripEmailDomain: true,
 			},
 			want:    []string{"100.64.0.1", "100.64.0.2", "100.64.0.3"},
 			wantErr: false,
@@ -814,6 +868,7 @@ func Test_expandAlias(t *testing.T) {
 				aclPolicy: ACLPolicy{
 					Groups: Groups{"group:accountant": []string{"joe", "marc"}},
 				},
+				stripEmailDomain: true,
 			},
 			want:    []string{},
 			wantErr: true,
@@ -824,6 +879,7 @@ func Test_expandAlias(t *testing.T) {
 				alias:            "10.0.0.3",
 				machines:         []Machine{},
 				aclPolicy:        ACLPolicy{},
+				stripEmailDomain: true,
 			},
 			want:    []string{"10.0.0.3"},
 			wantErr: false,
@@ -838,6 +894,7 @@ func Test_expandAlias(t *testing.T) {
 						"homeNetwork": netaddr.MustParseIPPrefix("192.168.1.0/24"),
 					},
 				},
+				stripEmailDomain: true,
 			},
 			want:    []string{"192.168.1.0/24"},
 			wantErr: false,
@@ -848,6 +905,7 @@ func Test_expandAlias(t *testing.T) {
 				alias:            "10.0.0.1",
 				machines:         []Machine{},
 				aclPolicy:        ACLPolicy{},
+				stripEmailDomain: true,
 			},
 			want:    []string{"10.0.0.1"},
 			wantErr: false,
@@ -858,6 +916,7 @@ func Test_expandAlias(t *testing.T) {
 				alias:            "10.0.0.0/16",
 				machines:         []Machine{},
 				aclPolicy:        ACLPolicy{},
+				stripEmailDomain: true,
 			},
 			want:    []string{"10.0.0.0/16"},
 			wantErr: false,
@@ -901,6 +960,7 @@ func Test_expandAlias(t *testing.T) {
 				aclPolicy: ACLPolicy{
 					TagOwners: TagOwners{"tag:hr-webserver": []string{"joe"}},
 				},
+				stripEmailDomain: true,
 			},
 			want:    []string{"100.64.0.1", "100.64.0.2"},
 			wantErr: false,
@@ -941,6 +1001,7 @@ func Test_expandAlias(t *testing.T) {
 						"tag:accountant-webserver": []string{"group:accountant"},
 					},
 				},
+				stripEmailDomain: true,
 			},
 			want:    []string{},
 			wantErr: true,
@@ -984,6 +1045,7 @@ func Test_expandAlias(t *testing.T) {
 				aclPolicy: ACLPolicy{
 					TagOwners: TagOwners{"tag:accountant-webserver": []string{"joe"}},
 				},
+				stripEmailDomain: true,
 			},
 			want:    []string{"100.64.0.4"},
 			wantErr: false,
@@ -995,6 +1057,7 @@ func Test_expandAlias(t *testing.T) {
 				test.args.machines,
 				test.args.aclPolicy,
 				test.args.alias,
+				test.args.stripEmailDomain,
 			)
 			if (err != nil) != test.wantErr {
 				t.Errorf("expandAlias() error = %v, wantErr %v", err, test.wantErr)