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package main
import (
"io"
"net/http"
"os"
"time"
)
// UnauthorizedIfNotLocal is a middleware that returns unauthorized if not
// being accessed from loopback, as a basic form of host authentication.
func UnauthorizedIfNotLocal(h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if !isLocal(r.RemoteAddr) {
http.Error(w, "Unauthorized", http.StatusUnauthorized)
Logger.Printf("Unauthorized request from: %s for %s",
r.RemoteAddr, r.RequestURI)
return
}
h.ServeHTTP(w, r)
})
}
// HandleSelfServe tries to locate the currently running executable and serve
// it down to the client.
func HandleSelfServe() http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
s, err := os.Executable()
if err != nil {
Logger.Println("While trying to get my executable path: ", err)
http.Error(w, "Internal server error", http.StatusInternalServerError)
return
}
fh, err := os.Open(s)
if err != nil {
Logger.Println("While opening my own executable for reading: ", err)
http.Error(w, "Internal server error", http.StatusInternalServerError)
return
}
_, err = io.Copy(w, fh)
fh.Close()
return
})
}
// HandleQuit just calls os.Exit after finishing the request
func HandleQuit(w http.ResponseWriter, r *http.Request) {
Logger.Println("Quit was called, exiting")
w.Header().Add("Content-type", "text/plain")
w.Write([]byte("Shutting down... feel free to close this"))
go func() {
time.Sleep(time.Millisecond * 50)
os.Exit(0)
}()
return
}
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