111 lines
2.3 KiB
Go
111 lines
2.3 KiB
Go
package main
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import (
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"bytes"
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"log"
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"net"
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"net/http"
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"strconv"
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"strings"
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)
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type ResponseWriter struct {
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http.ResponseWriter
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StatueCode int
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}
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func (w *ResponseWriter) WriteHeader(statusCode int) {
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if w.StatueCode != 0 {
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return
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}
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w.StatueCode = statusCode
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w.ResponseWriter.WriteHeader(statusCode)
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}
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func (w *ResponseWriter) Write(body []byte) (int, error) {
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if w.StatueCode == 0 {
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w.WriteHeader(200)
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}
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return w.ResponseWriter.Write(body)
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}
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func MakeResponse(w http.ResponseWriter, status int, body []byte) (int, error) {
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w.WriteHeader(status)
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return w.Write(body)
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}
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func AbortError(w http.ResponseWriter, err interface{}) (int, error) {
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switch v := err.(type) {
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case int:
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w.WriteHeader(v)
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return w.Write([]byte(strconv.Itoa(v)))
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case string:
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w.WriteHeader(500)
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return w.Write([]byte(v))
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case error:
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w.WriteHeader(500)
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return w.Write([]byte(v.Error()))
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default:
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w.WriteHeader(500)
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return w.Write([]byte(strconv.Itoa(500)))
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}
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}
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func Catch(rw *ResponseWriter, r *http.Request) {
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ex := recover()
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if ex != nil {
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AbortError(rw, r)
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log.Printf("%s %s %d %s %s\n", GetIP(r), r.Method, rw.StatueCode, r.URL, r.Header.Get("User-Agent"))
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}
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}
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func Middleware(next http.Handler) http.Handler {
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return http.HandlerFunc(
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func(w http.ResponseWriter, r *http.Request) {
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rw := &ResponseWriter{w, 0}
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defer Catch(rw, r)
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abort := false
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if flagAllow != "" {
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if !matchIPGlob(GetIP(r), flagAllow) {
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MakeResponse(rw, 403, []byte("permission denyed"))
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abort = true
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}
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}
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if !abort {
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next.ServeHTTP(rw, r)
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}
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if !strings.HasPrefix(r.URL.Path, "/public") && r.URL.Query().Get("f") != "true" {
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log.Printf("%s %s %d %s %s\n", GetIP(r), r.Method, rw.StatueCode, r.URL, r.Header.Get("User-Agent"))
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}
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},
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)
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}
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func GetIP(r *http.Request) string {
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ip := r.Header.Get("X-Real-Ip")
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if ip == "" {
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ips := r.Header.Get("X-Forwarded-For")
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ipArr := strings.Split(ips, ",")
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ip = strings.Trim(ipArr[len(ipArr)-1], " ")
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}
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if ip == "" {
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var err error
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ip, _, err = net.SplitHostPort(r.RemoteAddr)
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if err != nil {
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ip = r.RemoteAddr
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}
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}
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return ip
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}
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func Parse(w http.ResponseWriter, name string, data interface{}) error {
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buf := &bytes.Buffer{}
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err := tmpl.ExecuteTemplate(buf, "home", data)
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if err != nil {
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AbortError(w, err)
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return err
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}
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_, err = w.Write(buf.Bytes())
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return err
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}
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