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package cmd
import (
"context"
"fmt"
"html/template"
"log"
"net/http"
"net/http/httputil"
"net/url"
"sync"
"time"
"github.com/Wacky404/rpserver/internal/auth/users"
"github.com/Wacky404/rpserver/internal/middleware"
"github.com/golang-jwt/jwt/v5"
)
var (
proxyCache = make(map[string]*httputil.ReverseProxy)
cacheMutex sync.RWMutex
)
func ExecuteServer(port string, cert string, key string) error {
mux := http.NewServeMux()
mux.Handle("/", middleware.Recover(http.HandlerFunc(serveLoginPage)))
mux.Handle("/login", middleware.Recover(http.HandlerFunc(serveLoginPage)))
mux.Handle("/auth/login", middleware.Recover(http.HandlerFunc(handleLogin)))
mux.Handle("/dashboard", middleware.Recover(middleware.Cookies(http.HandlerFunc(serveDashboard))))
// mux.Handle("/settings/generate", middleware.Recover(middleware.Cookies(http.HandlerFunc())))
mux.Handle("v1/proxy", middleware.Recover(middleware.JWT(http.HandlerFunc(handleProxy))))
mux.Handle("v1/status", middleware.Recover(http.HandlerFunc(handleStatus)))
err := http.ListenAndServeTLS(port, cert, key, mux)
return err
}
func serveDashboard(w http.ResponseWriter, r *http.Request) {
tmpl := template.Must(template.ParseFiles("templates/dash/dashboard.html"))
tmpl.Execute(w, nil)
}
func serveLoginPage(w http.ResponseWriter, r *http.Request) {
tmpl := template.Must(template.ParseFiles("templates/index.html"))
tmpl.Execute(w, nil)
}
/* This function doesn't have proper auth for login creds */
func handleLogin(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
return
}
username := r.FormValue("username")
password := r.FormValue("password")
// pull this out into auth function
if username == "admin" && password == "password4321" {
newSID := users.SessionPrefix + users.GenID(16)
cookie := &http.Cookie{
Name: middleware.AdmitCookies[0],
Value: newSID,
Path: "/",
HttpOnly: true,
Secure: true,
SameSite: http.SameSiteStrictMode,
Expires: time.Now().Add(time.Minute * 5),
}
http.SetCookie(w, cookie)
w.Header().Set("HX-Redirect", "/dashboard")
w.WriteHeader(http.StatusOK)
return
}
w.WriteHeader(http.StatusBadRequest)
fmt.Fprint(w, `Invalid username or password`)
}
func handleStatus(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, "200 OK")
}
func handleProxy(w http.ResponseWriter, r *http.Request) {
claims, ok := r.Context().Value("claims").(jwt.MapClaims)
if !ok {
http.Error(w, "Failed to get JWT claims", http.StatusInternalServerError)
return
}
userID := claims["sub"]
role := claims["role"]
fmt.Printf("%v, %v", userID, role)
backendURL, err := getBackendURL(r)
if err != nil {
http.Error(w, "Backend URL not provided", http.StatusBadRequest)
return
}
proxy := getOrCreateProxy(backendURL)
ctx, cancel := context.WithTimeout(r.Context(), 5*time.Second)
defer cancel()
r = r.WithContext(ctx)
proxy.Director = func(req *http.Request) {
req.URL.Scheme = backendURL.Scheme
req.URL.Host = backendURL.Host
req.URL.Path = backendURL.Path
req.Host = backendURL.Host
}
done := make(chan struct{})
go func() {
proxy.ServeHTTP(w, r)
close(done)
}()
select {
case <-ctx.Done():
http.Error(w, "Request timed out", http.StatusGatewayTimeout)
log.Println("Request to", r.URL.Path, "timed out...balls")
case <-done:
}
}
func getBackendURL(r *http.Request) (*url.URL, error) {
backend := r.Header.Get("X-Backend-URL")
if backend == "" {
return nil, http.ErrNoLocation
}
return url.Parse(backend)
}
func getOrCreateProxy(target *url.URL) *httputil.ReverseProxy {
cacheMutex.RLock()
proxy, exists := proxyCache[target.String()]
cacheMutex.RUnlock()
if exists {
return proxy
}
cacheMutex.Lock()
defer cacheMutex.Unlock()
if proxy, exists = proxyCache[target.String()]; exists {
return proxy
}
proxy = httputil.NewSingleHostReverseProxy(target)
proxyCache[target.String()] = proxy
return proxy
}
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