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client/web: add web client Server struct

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Updates tailscale/corp#13775

Signed-off-by: Sonia Appasamy <sonia@tailscale.com>
This commit is contained in:
Sonia Appasamy 2023-08-09 13:14:03 -04:00 committed by Sonia Appasamy
parent 7815fbe17a
commit 2bc98abbd9
2 changed files with 36 additions and 16 deletions
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42
client/web/web.go
View File

@ -44,7 +44,25 @@
var tmpl *template.Template
var localClient tailscale.LocalClient
// Server is the backend server for a Tailscale web client.
type Server struct {
devMode bool
lc *tailscale.LocalClient
}
// NewServer constructs a new Tailscale web client server.
//
// lc is an optional parameter. When not filled, NewServer
// initializes its own tailscale.LocalClient.
func NewServer(devMode bool, lc *tailscale.LocalClient) *Server {
if lc == nil {
lc = &tailscale.LocalClient{}
}
return &Server{
devMode: devMode,
lc: lc,
}
}
func init() {
tmpl = template.Must(template.New("web.html").Parse(webHTML))
@ -264,8 +282,8 @@ func synoTokenRedirect(w http.ResponseWriter, r *http.Request) bool {
</body></html>
`
// Handle processes all requests for the Tailscale web client.
func Handle(w http.ResponseWriter, r *http.Request) {
// ServeHTTP processes all requests for the Tailscale web client.
func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
if authRedirect(w, r) {
return
@ -281,12 +299,12 @@ func Handle(w http.ResponseWriter, r *http.Request) {
return
}
st, err := localClient.StatusWithoutPeers(ctx)
st, err := s.lc.StatusWithoutPeers(ctx)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
prefs, err := localClient.GetPrefs(ctx)
prefs, err := s.lc.GetPrefs(ctx)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
@ -316,7 +334,7 @@ func Handle(w http.ResponseWriter, r *http.Request) {
mp.Prefs.AdvertiseRoutes = routes
log.Printf("Doing edit: %v", mp.Pretty())
if _, err := localClient.EditPrefs(ctx, mp); err != nil {
if _, err := s.lc.EditPrefs(ctx, mp); err != nil {
w.WriteHeader(http.StatusInternalServerError)
json.NewEncoder(w).Encode(mi{"error": err.Error()})
return
@ -331,7 +349,7 @@ func Handle(w http.ResponseWriter, r *http.Request) {
logout = true
}
log.Printf("tailscaleUp(reauth=%v, logout=%v) ...", reauth, logout)
url, err := tailscaleUp(r.Context(), st, postData)
url, err := s.tailscaleUp(r.Context(), st, postData)
log.Printf("tailscaleUp = (URL %v, %v)", url != "", err)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
@ -386,9 +404,9 @@ func Handle(w http.ResponseWriter, r *http.Request) {
w.Write(buf.Bytes())
}
func tailscaleUp(ctx context.Context, st *ipnstate.Status, postData postedData) (authURL string, retErr error) {
func (s *Server) tailscaleUp(ctx context.Context, st *ipnstate.Status, postData postedData) (authURL string, retErr error) {
if postData.ForceLogout {
if err := localClient.Logout(ctx); err != nil {
if err := s.lc.Logout(ctx); err != nil {
return "", fmt.Errorf("Logout error: %w", err)
}
return "", nil
@ -415,7 +433,7 @@ func tailscaleUp(ctx context.Context, st *ipnstate.Status, postData postedData)
watchCtx, cancelWatch := context.WithCancel(ctx)
defer cancelWatch()
watcher, err := localClient.WatchIPNBus(watchCtx, 0)
watcher, err := s.lc.WatchIPNBus(watchCtx, 0)
if err != nil {
return "", err
}
@ -423,10 +441,10 @@ func tailscaleUp(ctx context.Context, st *ipnstate.Status, postData postedData)
go func() {
if !isRunning {
localClient.Start(ctx, ipn.Options{})
s.lc.Start(ctx, ipn.Options{})
}
if forceReauth {
localClient.StartLoginInteractive(ctx)
s.lc.StartLoginInteractive(ctx)
}
}()

10
cmd/tailscale/cli/web.go
View File

@ -38,6 +38,7 @@
webf := newFlagSet("web")
webf.StringVar(&webArgs.listen, "listen", "localhost:8088", "listen address; use port 0 for automatic")
webf.BoolVar(&webArgs.cgi, "cgi", false, "run as CGI script")
webf.BoolVar(&webArgs.dev, "dev", false, "run web client in developer mode")
return webf
})(),
Exec: runWeb,
@ -46,6 +47,7 @@
var webArgs struct {
listen string
cgi bool
dev bool
}
func tlsConfigFromEnvironment() *tls.Config {
@ -76,10 +78,10 @@ func runWeb(ctx context.Context, args []string) error {
return fmt.Errorf("too many non-flag arguments: %q", args)
}
webHandler := http.HandlerFunc(web.Handle)
webServer := web.NewServer(webArgs.dev, nil)
if webArgs.cgi {
if err := cgi.Serve(webHandler); err != nil {
if err := cgi.Serve(webServer); err != nil {
log.Printf("tailscale.cgi: %v", err)
return err
}
@ -91,14 +93,14 @@ func runWeb(ctx context.Context, args []string) error {
server := &http.Server{
Addr: webArgs.listen,
TLSConfig: tlsConfig,
Handler: webHandler,
Handler: webServer,
}
log.Printf("web server running on: https://%s", server.Addr)
return server.ListenAndServeTLS("", "")
} else {
log.Printf("web server running on: %s", urlOfListenAddr(webArgs.listen))
return http.ListenAndServe(webArgs.listen, webHandler)
return http.ListenAndServe(webArgs.listen, webServer)
}
}