100 lines
2.2 KiB
Go
100 lines
2.2 KiB
Go
package server
|
|
|
|
import (
|
|
"bytes"
|
|
"compress/gzip"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/khlieng/dispatch/assets"
|
|
)
|
|
|
|
var files = []File{
|
|
File{"vendor.js", "text/javascript"},
|
|
File{"bundle.js", "text/javascript"},
|
|
File{"bundle.css", "text/css"},
|
|
File{"font/fontello.woff", "application/font-woff"},
|
|
File{"font/fontello.ttf", "application/x-font-ttf"},
|
|
File{"font/fontello.eot", "application/vnd.ms-fontobject"},
|
|
File{"font/fontello.svg", "image/svg+xml"},
|
|
}
|
|
|
|
type File struct {
|
|
Path string
|
|
ContentType string
|
|
}
|
|
|
|
func serveFiles(w http.ResponseWriter, r *http.Request) {
|
|
if r.URL.Path == "/" {
|
|
handleAuth(w, r)
|
|
serveFile(w, r, "index.html.gz", "text/html")
|
|
return
|
|
}
|
|
|
|
if strings.HasSuffix(r.URL.Path, "favicon.ico") {
|
|
w.WriteHeader(404)
|
|
return
|
|
}
|
|
|
|
for _, file := range files {
|
|
if strings.HasSuffix(r.URL.Path, file.Path) {
|
|
serveFile(w, r, file.Path+".gz", file.ContentType)
|
|
return
|
|
}
|
|
}
|
|
|
|
handleAuth(w, r)
|
|
serveFile(w, r, "index.html.gz", "text/html")
|
|
}
|
|
|
|
func serveFile(w http.ResponseWriter, r *http.Request, path, contentType string) {
|
|
info, err := assets.AssetInfo(path)
|
|
if err != nil {
|
|
http.Error(w, "", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
if !modifiedSince(w, r, info.ModTime()) {
|
|
return
|
|
}
|
|
|
|
data, err := assets.Asset(path)
|
|
if err != nil {
|
|
http.Error(w, "", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
w.Header().Set("Content-Type", contentType)
|
|
|
|
if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
|
|
w.Header().Set("Content-Encoding", "gzip")
|
|
w.Header().Set("Content-Length", strconv.Itoa(len(data)))
|
|
w.Write(data)
|
|
} else {
|
|
gzr, err := gzip.NewReader(bytes.NewReader(data))
|
|
buf, err := ioutil.ReadAll(gzr)
|
|
if err != nil {
|
|
http.Error(w, "", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
w.Header().Set("Content-Length", strconv.Itoa(len(buf)))
|
|
w.Write(buf)
|
|
}
|
|
}
|
|
|
|
func modifiedSince(w http.ResponseWriter, r *http.Request, modtime time.Time) bool {
|
|
t, err := time.Parse(http.TimeFormat, r.Header.Get("If-Modified-Since"))
|
|
|
|
if err == nil && modtime.Before(t.Add(1*time.Second)) {
|
|
w.WriteHeader(http.StatusNotModified)
|
|
return false
|
|
}
|
|
|
|
w.Header().Set("Last-Modified", modtime.UTC().Format(http.TimeFormat))
|
|
return true
|
|
}
|