/* Copyright © 2022 Seednode */ package cmd import ( "errors" "io" "log" "net/http" "net/url" "os" "strconv" "strings" ) func generatePageHtml(w http.ResponseWriter, r http.Request, paths []string) error { fileList, err := getFileList(paths) if err != nil { return err } fileName, filePath, err := pickFile(fileList) if err != nil { http.NotFound(w, &r) return nil } w.Header().Add("Content-Type", "text/html") htmlBody := ` ` htmlBody += fileName htmlBody += ` ` _, err = io.WriteString(w, htmlBody) if err != nil { return err } return nil } func serveStaticFile(w http.ResponseWriter, r http.Request, paths []string) error { request := r.RequestURI filePath, err := url.QueryUnescape(request) if err != nil { return err } var matchesPrefix = false for i := 0; i < len(paths); i++ { if strings.HasPrefix(filePath, paths[i]) { matchesPrefix = true } } if matchesPrefix == false { if Verbose { log.Println("Failed to serve file outside specified path(s): " + filePath) } http.NotFound(w, &r) return nil } _, err = os.Stat(filePath) if errors.Is(err, os.ErrNotExist) { if Verbose { log.Println("Failed to serve non-existent file: " + filePath) } http.NotFound(w, &r) return nil } else if !errors.Is(err, os.ErrNotExist) && err != nil { return err } buf, err := os.ReadFile(filePath) if err != nil { return err } w.Write(buf) if Verbose { log.Println("Served file: " + filePath) } return nil } func servePageHandler(paths []string) http.HandlerFunc { return func(w http.ResponseWriter, r *http.Request) { if r.RequestURI == "/" { err := generatePageHtml(w, *r, paths) if err != nil { log.Fatal(err) } } else { err := serveStaticFile(w, *r, paths) if err != nil { log.Fatal(err) } } } } func doNothing(http.ResponseWriter, *http.Request) {} func ServePage(args []string) { defer HandleExit() paths, err := normalizePaths(args) if err != nil { log.Fatal(err) } http.HandleFunc("/", servePageHandler(paths)) http.HandleFunc("/favicon.ico", doNothing) port := strconv.Itoa(Port) log.Fatal(http.ListenAndServe(":"+port, nil)) }