tailcfg, cmd/tailscale: add Hostinfo.ShareeNode, hide in "tailscale status"

tailcfg/tailcfg.go

@@ -287,6 +287,7 @@ type Hostinfo struct {
 	DeviceModel   string       `json:",omitempty"` // mobile phone model ("Pixel 3a", "iPhone 11 Pro")
 	Hostname      string       // name of the host the client runs on
 	ShieldsUp     bool         `json:",omitempty"` // indicates whether the host is blocking incoming connections
+	ShareeNode    bool         `json:",omitempty"` // indicates this node exists in netmap because it's owned by a shared-to user
 	GoArch        string       `json:",omitempty"` // the host's GOARCH value (of the running binary)
 	RoutableIPs   []wgcfg.CIDR `json:",omitempty"` // set of IP ranges this client can route
 	RequestTags   []string     `json:",omitempty"` // set of ACL tags this node wants to claim

tailcfg/tailcfg_clone.go

@@ -106,6 +106,7 @@ var _HostinfoNeedsRegeneration = Hostinfo(struct {
 	DeviceModel   string
 	Hostname      string
 	ShieldsUp     bool
+	ShareeNode    bool
 	GoArch        string
 	RoutableIPs   []wgcfg.CIDR
 	RequestTags   []string

tailcfg/tailcfg_test.go

@@ -23,9 +23,12 @@ func fieldsOf(t reflect.Type) (fields []string) {
 
 func TestHostinfoEqual(t *testing.T) {
 	hiHandles := []string{
-		"IPNVersion", "FrontendLogID", "BackendLogID", "OS", "OSVersion",
-		"DeviceModel", "Hostname", "ShieldsUp", "GoArch", "RoutableIPs",
-		"RequestTags", "Services", "NetInfo",
+		"IPNVersion", "FrontendLogID", "BackendLogID",
+		"OS", "OSVersion", "DeviceModel", "Hostname",
+		"ShieldsUp", "ShareeNode",
+		"GoArch",
+		"RoutableIPs", "RequestTags",
+		"Services", "NetInfo",
 	}
 	if have := fieldsOf(reflect.TypeOf(Hostinfo{})); !reflect.DeepEqual(have, hiHandles) {
 		t.Errorf("Hostinfo.Equal check might be out of sync\nfields: %q\nhandled: %q\n",
@@ -169,6 +172,11 @@ func TestHostinfoEqual(t *testing.T) {
 			&Hostinfo{Services: []Service{Service{Proto: TCP, Port: 1234, Description: "foo"}}},
 			true,
 		},
+		{
+			&Hostinfo{ShareeNode: true},
+			&Hostinfo{},
+			false,
+		},
 	}
 	for i, tt := range tests {
 		got := tt.a.Equal(tt.b)