added json output for logs when Accept: application/json
This commit is contained in:
Stefan Etringer
parent
495f26caed
commit
47ba7aa229
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@ -146,6 +146,17 @@ func (a *App) logsHandler(w http.ResponseWriter, r *http.Request) {
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return
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}
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if strings.Contains(r.Header.Get("Accept"), "json") {
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w.Header().Set("Content-Type", "application/json")
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jsonData, err := json.Marshal(logs)
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if err != nil {
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http.Error(w, "Failed to encode agents to JSON", http.StatusInternalServerError)
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return
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}
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w.Write(jsonData)
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return
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}
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a.renderTemplate(w, "logs_partial.html", logs)
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}
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@ -177,193 +188,6 @@ func (a *App) getAgentIds(w http.ResponseWriter, r *http.Request) {
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return
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}
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// func readCookie(r *http.Request, name string) (string, bool){
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// c, err := r.Cookie(name)
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// if err != nil { return "", false }
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// v, _ := url.QueryUnescape(c.Value)
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// return v, true
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// }
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// func setCookie(h http.Header, name, val string) {
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// h.Add("Set-Cookie", (&http.Cookie{
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// Name: name,
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// Value: url.QueryEscape(val),
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// Path: "/proxyAgent",
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// SameSite: http.SameSiteLaxMode,
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// }).String())
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// }
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// // proxyAgentHandler tunnels HTTP and WebSocket traffic to an agent
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// // selected by ?ip=…&port=… . It keeps the path *after* /proxyAgent,
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// // removes the two query parameters, disables HTTP/2 (mandatory for WS),
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// // and streams with no buffering.
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// func (a *App) proxyAgentHandler(w http.ResponseWriter, r *http.Request) {
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// ip := r.URL.Query().Get("ip")
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// port := r.URL.Query().Get("port")
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// if ip == "" || port == "" {
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// http.Error(w, "ip and port query parameters are required", http.StatusBadRequest)
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// return
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// }
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// // We leave the scheme "http" even for WebSockets – the Upgrade
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// // header does the rest. (Only cosmetic to change it to "ws”.)
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// target, err := url.Parse("http://" + ip + ":" + port)
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// if err != nil {
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// http.Error(w, "invalid ip/port: "+err.Error(), http.StatusBadRequest)
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// return
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// }
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// proxy := &httputil.ReverseProxy{
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// Director: func(req *http.Request) {
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// // Point to the agent
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// req.URL.Scheme = target.Scheme
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// req.URL.Host = target.Host
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// // Trim the first "/proxyAgent" prefix
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// if strings.HasPrefix(req.URL.Path, "/proxyAgent") {
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// req.URL.Path = strings.TrimPrefix(req.URL.Path, "/proxyAgent")
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// if req.URL.Path == "" {
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// req.URL.Path = "/"
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// }
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// }
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// // Scrub ip/port from downstream query
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// q := req.URL.Query()
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// q.Del("ip")
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// q.Del("port")
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// req.URL.RawQuery = q.Encode()
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// // Preserve Host (many CLI-style servers care)
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// req.Host = target.Host
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// },
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// // Critical tweaks for WebSockets
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// Transport: &http.Transport{
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// Proxy: http.ProxyFromEnvironment,
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// DialContext: (&net.Dialer{Timeout: 30 * time.Second, KeepAlive: 30 * time.Second}).DialContext,
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// ForceAttemptHTTP2: false, // MUST be HTTP/1.1 for WS
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// ResponseHeaderTimeout: 0,
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// },
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// FlushInterval: -1, // stream bytes immediately
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// }
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// proxy.ServeHTTP(w, r)
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// }
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// Registration (keep the slash so sub‑paths are included):
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// webMux.HandleFunc("/proxyAgent/", app.proxyAgentHandler)
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//func (app *App) proxyAgentHandler(w http.ResponseWriter, r *http.Request) {
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// //------------------------------------------------------------------
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// // 0. Helpers for cookie handling
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// //------------------------------------------------------------------
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// readCookie := func(name string) (string, bool) {
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// c, err := r.Cookie(name)
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// if err != nil { return "", false }
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// v, _ := url.QueryUnescape(c.Value)
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// return v, true
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// }
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// writeCookie := func(h http.Header, name, val string) {
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// h.Add("Set-Cookie", (&http.Cookie{
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// Name: name,
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// Value: url.QueryEscape(val),
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// Path: "/proxyAgent", // cookie visible only here
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// SameSite: http.SameSiteLaxMode,
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// }).String())
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// }
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// //------------------------------------------------------------------
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// // 1. Decide which agent to talk to
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// //------------------------------------------------------------------
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// ip, port := r.URL.Query().Get("ip"), r.URL.Query().Get("port")
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// // fallback to cookies if query params are absent
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// if ip == "" || port == "" {
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// if v, ok := readCookie("proxyagent_ip"); ok { ip = v }
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// if v, ok := readCookie("proxyagent_port"); ok { port = v }
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// }
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// if ip == "" || port == "" {
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// http.Error(w, "ip and port query parameters are required", http.StatusBadRequest)
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// return
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// }
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// target, err := url.Parse("http://" + ip + ":" + port)
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// if err != nil {
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// http.Error(w, "invalid ip/port: "+err.Error(), http.StatusBadRequest)
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// return
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// }
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// // keep copies for ModifyResponse (Director will delete them)
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// ipForCookie, portForCookie := ip, port
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// //------------------------------------------------------------------
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// // 2. Reverse proxy
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// //------------------------------------------------------------------
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// proxy := &httputil.ReverseProxy{
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// Director: func(req *http.Request) {
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// // 2.1 upstream address
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// req.URL.Scheme = target.Scheme
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// req.URL.Host = target.Host
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// // 2.2 strip ONE leading /proxyAgent
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// if strings.HasPrefix(req.URL.Path, "/proxyAgent") {
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// req.URL.Path = strings.TrimPrefix(req.URL.Path, "/proxyAgent")
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// if req.URL.Path == "" { req.URL.Path = "/" }
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// }
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// // 2.3 remove ip/port from outgoing query
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// q := req.URL.Query()
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// q.Del("ip"); q.Del("port")
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// req.URL.RawQuery = q.Encode()
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// // 2.4 keep original Host header
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// req.Host = target.Host
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// // 2.5 force uncompressed HTML so we can patch it
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// req.Header.Del("Accept-Encoding")
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// },
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// Transport: &http.Transport{
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// Proxy: http.ProxyFromEnvironment,
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// DialContext: (&net.Dialer{Timeout: 30 * time.Second, KeepAlive: 30 * time.Second}).DialContext,
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// ForceAttemptHTTP2: false, // must stay on h1 for WebSocket upgrade
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// ResponseHeaderTimeout: 0,
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// },
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// FlushInterval: -1, // instant streaming for xterm.js
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// //------------------------------------------------------------------
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// // 3. Response rewrite & cookie injection
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// //------------------------------------------------------------------
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// ModifyResponse: func(resp *http.Response) error {
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// // 3.1 always (once per agent) set the cookies
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// writeCookie(resp.Header, "proxyagent_ip", ipForCookie)
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// writeCookie(resp.Header, "proxyagent_port", portForCookie)
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// // 3.2 if the payload is HTML, inject <base href="/proxyAgent/">
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// if ct := resp.Header.Get("Content-Type"); strings.HasPrefix(ct, "text/html") {
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// body, _ := io.ReadAll(resp.Body)
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// patched := bytes.Replace(
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// body,
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// []byte("<head>"),
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// []byte(`<head><base href="/proxyAgent/">`),
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// 1)
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// resp.Body = io.NopCloser(bytes.NewReader(patched))
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// resp.ContentLength = int64(len(patched))
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// resp.Header.Set("Content-Length", strconv.Itoa(len(patched)))
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// }
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// return nil
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// },
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// }
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// proxy.ServeHTTP(w, r)
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//}
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func (app *App) proxyAgentHandler(w http.ResponseWriter, r *http.Request) {
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// path is /proxyAgent/<agentKey>/whatever…
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tail := strings.TrimPrefix(r.URL.Path, "/proxyAgent/")
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