I change the style of init somewhat, init as early as possible. - suckless/dwm - Unnamed repository; edit this file 'description' to name the repository.

diff options

author	Anselm R. Garbe <arg@suckless.org>	2007-06-06 11:17:56 +0200
committer	Anselm R. Garbe <arg@suckless.org>	2007-06-06 11:17:56 +0200
commit	4bf3b019535da3aa14cfccebd65ea726cbd15862 (patch)
tree	bfbb9877a5eb386f3d7e8870aa97edf7bbc00cab /README
parent	ff957d1eaca73800e59f640351dce35e3ab67f9e (diff)
download	dwm-4bf3b019535da3aa14cfccebd65ea726cbd15862.tar.gz

I change the style of init somewhat, init as early as possible.

Diffstat (limited to 'README')

0 files changed, 0 insertions, 0 deletions

package main import ( "context" "log" "net" "net/http" "strings" ) // Attaches a request's IP address to the request's context. // If getwtxt is behind a reverse proxy, get the last entry // in the X-Forwarded-For HTTP header as the user IP. func newCtxUserIP(ctx context.Context, r *http.Request) context.Context { base := strings.Split(r.RemoteAddr, ":") uip := base[0] if _, ok := r.Header["X-Forwarded-For"]; ok { proxied := r.Header["X-Forwarded-For"] base = strings.Split(proxied[len(proxied)-1], ":") uip = base[0] } return context.WithValue(ctx, ctxKey, uip) } // Retrieves a request's IP address from the request's context func getIPFromCtx(ctx context.Context) net.IP { uip, ok := ctx.Value(ctxKey).(string) if !ok { log.Printf("Couldn't retrieve IP from request\n") } return net.ParseIP(uip) } // Shim function to modify/pass context value to a handler func ipMiddleware(hop http.Handler) http.Handler { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { ctx := newCtxUserIP(r.Context(), r) hop.ServeHTTP(w, r.WithContext(ctx)) }) } // log output for 200s func log200(r *http.Request) { uip := getIPFromCtx(r.Context()) log.Printf("*** %v :: 200 :: %v %v\n", uip, r.Method, r.URL) } // log output for 400s func log400(w http.ResponseWriter, r *http.Request, err string) { uip := getIPFromCtx(r.Context()) log.Printf("*** %v :: 400 :: %v %v :: %v\n", uip, r.Method, r.URL, err) http.Error(w, "400 Bad Request: "+err, http.StatusBadRequest) } // log output for 404s func log404(w http.ResponseWriter, r *http.Request, err error) { uip := getIPFromCtx(r.Context()) log.Printf("*** %v :: 404 :: %v %v :: %v\n", uip, r.Method, r.URL, err) http.Error(w, err.Error(), http.StatusNotFound) } // log output for 500s func log500(w http.ResponseWriter, r *http.Request, err error) { uip := getIPFromCtx(r.Context()) log.Printf("*** %v :: 500 :: %v %v :: %v\n", uip, r.Method, r.URL, err) http.Error(w, err.Error(), http.StatusInternalServerError) }


context:
space:
mode: