121 lines
3.7 KiB
Go
121 lines
3.7 KiB
Go
package webserver
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import (
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"fmt"
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"log"
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"regexp"
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"strconv"
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"strings"
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"time"
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"compress/gzip"
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"net/http"
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"istheinternetonfire.app/assets"
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"istheinternetonfire.app/internal/config"
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)
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const (
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TYPE_APPLICATION_JSON string = "application/json"
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TYPE_APPLICATION_MANIFEST_JSON string = "application/manifest+json"
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TYPE_APPLICATION_PEM string = "application/x-pem-file"
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TYPE_AUDIO_MPEG string = "audio/mpeg"
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TYPE_FONT_WOFF string = "font/woff"
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TYPE_FONT_WOFF2 string = "font/woff2"
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TYPE_IMAGE_JPG string = "image/jpg"
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TYPE_IMAGE_PNG string = "image/png"
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TYPE_TEXT_CSS string = "text/css"
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TYPE_TEXT_HTML string = "text/html"
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TYPE_TEXT_JS string = "text/javascript"
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TYPE_TEXT_PLAIN string = "text/plain"
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TYPE_TEXT_RAW string = "text/raw"
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)
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var validFiles map[string]string = map[string]string{
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"/apple-touch-icon.png": TYPE_IMAGE_PNG,
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"/favicon-16x16.png": TYPE_IMAGE_PNG,
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"/favicon-32x32.png": TYPE_IMAGE_PNG,
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"/favicon.ico": TYPE_IMAGE_PNG,
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"/js/bootstrap.bundle.min.js.map": TYPE_APPLICATION_JSON,
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"/js/bootstrap.bundle.min.js": TYPE_TEXT_JS,
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"/js/jquery.min.js": TYPE_TEXT_JS,
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"/robots.txt": TYPE_TEXT_PLAIN,
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"/site.webmanifest": TYPE_APPLICATION_MANIFEST_JSON, // https://developer.mozilla.org/en-US/docs/Web/Manifest
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}
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func isValidReq(file string) (string, error) {
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for f, t := range validFiles {
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if file == f {
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return t, nil
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}
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}
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return "", fmt.Errorf("Invalid file requested: %s", file)
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}
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func httpAccessLog(req *http.Request) {
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config.Cfg.Log.Debug("http request", "method", req.Method, "remote-address", req.RemoteAddr, "request-uri", req.RequestURI)
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}
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func crossSiteOrigin(w http.ResponseWriter) {
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w.Header().Add("Access-Control-Allow-Origin", "*")
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w.Header().Add("Access-Control-Allow-Methods", "POST, GET, OPTIONS")
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}
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func Start() {
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path := http.NewServeMux()
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connection := &http.Server{
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Addr: config.Cfg.WebServerIP + ":" + strconv.FormatInt(int64(config.Cfg.WebServerPort), 10),
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Handler: path,
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ReadTimeout: time.Duration(config.Cfg.WebServerReadTimeout) * time.Second,
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WriteTimeout: time.Duration(config.Cfg.WebServerWriteTimeout) * time.Second,
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IdleTimeout: time.Duration(config.Cfg.WebServerIdleTimeout) * time.Second,
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}
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path.HandleFunc("/", webRoot)
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if err := connection.ListenAndServe(); err != nil {
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config.Cfg.Log.Error("unable to start webserver", "error", err)
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}
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}
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func webRoot(w http.ResponseWriter, r *http.Request) {
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httpAccessLog(r)
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crossSiteOrigin(w)
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if strings.ToLower(r.Method) != "get" {
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config.Cfg.Log.Debug("http invalid method", "url", r.URL.Path, "expected", "GET", "received", r.Method)
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tmpltError(w, http.StatusBadRequest, "Invalid http method.")
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return
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}
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if r.URL.Path == "/" {
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tmpltWebRoot(w, r)
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} else {
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cType, err := isValidReq(r.URL.Path)
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if err != nil {
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config.Cfg.Log.Debug("request not found", "url", r.URL.Path)
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tmpltStatusNotFound(w, r.URL.Path)
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return
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}
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w.Header().Add("Content-Type", cType)
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o, err := assets.EmbedHTML.ReadFile("html" + r.URL.Path)
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if err != nil {
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log.Printf("[ERROR] Unable to read local embedded file data: %v\n", err)
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tmpltError(w, http.StatusInternalServerError, "Server unable to retrieve file data.")
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return
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}
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if regexp.MustCompile(`gzip`).Match([]byte(r.Header.Get("Accept-Encoding"))) {
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w.Header().Add("Content-Encoding", "gzip")
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gw := gzip.NewWriter(w)
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defer gw.Close()
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gw.Write(o) //nolint:errcheck
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} else {
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w.Write(o) //nolint:errcheck
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}
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}
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}
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