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package main
import (
"encoding/json"
"flag"
"fmt"
"log"
"net"
"net/http"
"github.com/cloudflare/cfssl/whitelist"
)
var wl = whitelist.NewBasic()
func addIP(w http.ResponseWriter, r *http.Request) {
addr := r.FormValue("ip")
ip := net.ParseIP(addr)
wl.Add(ip)
log.Printf("request to add %s to the whitelist", addr)
w.Write([]byte(fmt.Sprintf("Added %s to whitelist.\n", addr)))
}
func delIP(w http.ResponseWriter, r *http.Request) {
addr := r.FormValue("ip")
ip := net.ParseIP(addr)
wl.Remove(ip)
log.Printf("request to remove %s from the whitelist", addr)
w.Write([]byte(fmt.Sprintf("Removed %s from whitelist.\n", ip)))
}
func dumpWhitelist(w http.ResponseWriter, r *http.Request) {
out, err := json.Marshal(wl)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
} else {
w.Write(out)
}
}
type handler struct {
h func(http.ResponseWriter, *http.Request)
}
func newHandler(h func(w http.ResponseWriter, r *http.Request)) http.Handler {
return &handler{h: h}
}
func (h *handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
h.h(w, r)
}
func main() {
root := flag.String("root", "files/", "file server root")
flag.Parse()
fileServer := http.StripPrefix("/files/",
http.FileServer(http.Dir(*root)))
wl.Add(net.IP{127, 0, 0, 1})
adminWL := whitelist.NewBasic()
adminWL.Add(net.IP{127, 0, 0, 1})
adminWL.Add(net.ParseIP("::1"))
protFiles, err := whitelist.NewHandler(fileServer, nil, wl)
if err != nil {
log.Fatalf("%v", err)
}
addHandler, err := whitelist.NewHandlerFunc(addIP, nil, adminWL)
if err != nil {
log.Fatalf("%v", err)
}
delHandler, err := whitelist.NewHandlerFunc(delIP, nil, adminWL)
if err != nil {
log.Fatalf("%v", err)
}
dumpHandler, err := whitelist.NewHandlerFunc(dumpWhitelist, nil, adminWL)
if err != nil {
log.Fatalf("%v", err)
}
http.Handle("/files/", protFiles)
http.Handle("/add", addHandler)
http.Handle("/del", delHandler)
http.Handle("/dump", dumpHandler)
log.Println("Serving files on :8080")
log.Fatal(http.ListenAndServe(":8080", nil))
}
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