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package lib
import (
"net/http"
"slices"
"time"
"github.com/TecharoHQ/anubis/internal"
"github.com/TecharoHQ/anubis/lib/policy"
"github.com/TecharoHQ/anubis/web"
"github.com/a-h/templ"
"github.com/TecharoHQ/anubis"
)
func (s *Server) ClearCookie(w http.ResponseWriter) {
http.SetCookie(w, &http.Cookie{
Name: anubis.CookieName,
Value: "",
Expires: time.Now().Add(-1 * time.Hour),
MaxAge: -1,
SameSite: http.SameSiteLaxMode,
Domain: s.opts.CookieDomain,
})
}
// https://github.com/oauth2-proxy/oauth2-proxy/blob/master/pkg/upstream/http.go#L124
type UnixRoundTripper struct {
Transport *http.Transport
}
// set bare minimum stuff
func (t UnixRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
req = req.Clone(req.Context())
if req.Host == "" {
req.Host = "localhost"
}
req.URL.Host = req.Host // proxy error: no Host in request URL
req.URL.Scheme = "http" // make http.Transport happy and avoid an infinite recursion
return t.Transport.RoundTrip(req)
}
func (s *Server) RenderIndex(w http.ResponseWriter, r *http.Request, rule *policy.Bot, returnHTTPStatusOnly bool) {
if returnHTTPStatusOnly {
w.WriteHeader(http.StatusUnauthorized)
w.Write([]byte("Authorization required"))
return
}
lg := internal.GetRequestLogger(r)
challenge := s.challengeFor(r, rule.Challenge.Difficulty)
var ogTags map[string]string = nil
if s.opts.OGPassthrough {
var err error
ogTags, err = s.OGTags.GetOGTags(r.URL)
if err != nil {
lg.Error("failed to get OG tags", "err", err)
}
}
component, err := web.BaseWithChallengeAndOGTags("Making sure you're not a bot!", web.Index(), challenge, rule.Challenge, ogTags)
if err != nil {
lg.Error("render failed, please open an issue", "err", err) // This is likely a bug in the template. Should never be triggered as CI tests for this.
s.respondWithError(w, r, "Internal Server Error: please contact the administrator and ask them to look for the logs around \"RenderIndex\"")
return
}
handler := internal.NoStoreCache(templ.Handler(component))
handler.ServeHTTP(w, r)
}
func (s *Server) RenderBench(w http.ResponseWriter, r *http.Request) {
templ.Handler(
web.Base("Benchmarking Anubis!", web.Bench()),
).ServeHTTP(w, r)
}
func (s *Server) respondWithError(w http.ResponseWriter, r *http.Request, message string) {
s.respondWithStatus(w, r, message, http.StatusInternalServerError)
}
func (s *Server) respondWithStatus(w http.ResponseWriter, r *http.Request, msg string, status int) {
templ.Handler(web.Base("Oh noes!", web.ErrorPage(msg, s.opts.WebmasterEmail)), templ.WithStatus(status)).ServeHTTP(w, r)
}
func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
s.mux.ServeHTTP(w, r)
}
func (s *Server) ServeHTTPNext(w http.ResponseWriter, r *http.Request) {
if s.next == nil {
redir := r.FormValue("redir")
urlParsed, err := r.URL.Parse(redir)
if err != nil {
s.respondWithStatus(w, r, "Redirect URL not parseable", http.StatusBadRequest)
return
}
if (len(urlParsed.Host) > 0 && len(s.opts.RedirectDomains) != 0 && !slices.Contains(s.opts.RedirectDomains, urlParsed.Host)) || urlParsed.Host != r.URL.Host {
s.respondWithStatus(w, r, "Redirect domain not allowed", http.StatusBadRequest)
return
}
if redir != "" {
http.Redirect(w, r, redir, http.StatusFound)
return
}
templ.Handler(
web.Base("You are not a bot!", web.StaticHappy()),
).ServeHTTP(w, r)
} else {
s.next.ServeHTTP(w, r)
}
}
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