Migrate code from Go branch to new repo

2020-06-02 17:47:39 +08:00
commit fad1302a73
40 changed files with 14952 additions and 0 deletions
@@ -0,0 +1,190 @@
+package web
+
+import (
+	"encoding/json"
+	"io"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"github.com/go-chi/chi"
+	"github.com/go-chi/chi/middleware"
+	"github.com/go-chi/cors"
+	"github.com/go-chi/render"
+	log "github.com/sirupsen/logrus"
+
+	"github.com/librespeed/speedtest/config"
+	"github.com/librespeed/speedtest/results"
+)
+
+const (
+	// chunk size is 1 mib
+	chunkSize = 1048576
+)
+
+var (
+	// generate random data for download test on start to minimize runtime overhead
+	randomData = getRandomData(chunkSize)
+)
+
+func ListenAndServe(conf *config.Config) error {
+	r := chi.NewMux()
+	r.Use(middleware.RealIP)
+
+	cs := cors.New(cors.Options{
+		AllowedOrigins: []string{"*"},
+		AllowedMethods: []string{"GET", "POST", "OPTIONS"},
+		AllowedHeaders: []string{"*"},
+	})
+
+	r.Use(cs.Handler)
+	r.Use(middleware.NoCache)
+	r.Use(middleware.Logger)
+
+	log.Infof("Starting backend server on %s", net.JoinHostPort(conf.BindAddress, conf.Port))
+	r.Get("/*", pages)
+	r.HandleFunc("/empty", empty)
+	r.Get("/garbage", garbage)
+	r.Get("/getIP", getIP)
+	r.Get("/results", results.DrawPNG)
+	r.Get("/results/", results.DrawPNG)
+	r.Post("/results/telemetry", results.Record)
+	r.HandleFunc("/stats", results.Stats)
+
+	// PHP frontend default values compatibility
+	r.HandleFunc("/empty.php", empty)
+	r.Get("/garbage.php", garbage)
+	r.Get("/getIP.php", getIP)
+	r.Post("/results/telemetry.php", results.Record)
+	r.HandleFunc("/stats.php", results.Stats)
+
+	return http.ListenAndServe(net.JoinHostPort(conf.BindAddress, conf.Port), r)
+}
+
+func pages(w http.ResponseWriter, r *http.Request) {
+	if r.RequestURI == "/" {
+		r.RequestURI = "/index.html"
+	}
+
+	uri := strings.Split(r.RequestURI, "?")[0]
+	if strings.HasSuffix(uri, ".html") || strings.HasSuffix(uri, ".js") {
+		http.FileServer(http.Dir("assets")).ServeHTTP(w, r)
+	} else {
+		w.WriteHeader(http.StatusForbidden)
+	}
+}
+
+func empty(w http.ResponseWriter, r *http.Request) {
+	io.Copy(ioutil.Discard, r.Body)
+	r.Body.Close()
+
+	w.Header().Set("Connection", "keep-alive")
+	w.WriteHeader(http.StatusOK)
+}
+
+func garbage(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Description", "File Transfer")
+	w.Header().Set("Content-Type", "application/octet-stream")
+	w.Header().Set("Content-Disposition", "attachment; filename=random.dat")
+	w.Header().Set("Content-Transfer-Encoding", "binary")
+
+	// chunk size set to 4 by default
+	chunks := 4
+
+	ckSize := r.FormValue("ckSize")
+	if ckSize != "" {
+		i, err := strconv.ParseInt(ckSize, 10, 64)
+		if err != nil {
+			log.Errorf("Invalid chunk size: %s", ckSize)
+			log.Warn("Will use default value %d", chunks)
+		} else {
+			// limit max chunk size to 1024
+			if i > 1024 {
+				chunks = 1024
+			} else {
+				chunks = int(i)
+			}
+		}
+	}
+
+	for i := 0; i < chunks; i++ {
+		if _, err := w.Write(randomData); err != nil {
+			log.Errorf("Error writing back to client at chunk number %d: %s", i, err)
+			break
+		}
+	}
+}
+
+func getIP(w http.ResponseWriter, r *http.Request) {
+	var ret results.Result
+
+	clientIP := r.RemoteAddr
+	clientIP = strings.ReplaceAll(clientIP, "::ffff:", "")
+
+	ip, _, err := net.SplitHostPort(r.RemoteAddr)
+	if err == nil {
+		clientIP = ip
+	}
+
+	isSpecialIP := true
+	switch {
+	case clientIP == "::1":
+		ret.ProcessedString = clientIP + " - localhost IPv6 access"
+	case strings.HasPrefix(clientIP, "fe80:"):
+		ret.ProcessedString = clientIP + " - link-local IPv6 access"
+	case strings.HasPrefix(clientIP, "127."):
+		ret.ProcessedString = clientIP + " - localhost IPv4 access"
+	case strings.HasPrefix(clientIP, "10."):
+		ret.ProcessedString = clientIP + " - private IPv4 access"
+	case regexp.MustCompile(`^172\.(1[6-9]|2\d|3[01])\.`).MatchString(clientIP):
+		ret.ProcessedString = clientIP + " - private IPv4 access"
+	case strings.HasPrefix(clientIP, "192.168"):
+		ret.ProcessedString = clientIP + " - private IPv4 access"
+	case strings.HasPrefix(clientIP, "169.254"):
+		ret.ProcessedString = clientIP + " - link-local IPv4 access"
+	case regexp.MustCompile(`^100\.([6-9][0-9]|1[0-2][0-7])\.`).MatchString(clientIP):
+		ret.ProcessedString = clientIP + " - CGNAT IPv4 access"
+	default:
+		isSpecialIP = false
+	}
+
+	if isSpecialIP {
+		b, _ := json.Marshal(&ret)
+		if _, err := w.Write(b); err != nil {
+			log.Errorf("Error writing to client: %s", err)
+		}
+		return
+	}
+
+	getISPInfo := r.FormValue("isp") == "true"
+	distanceUnit := r.FormValue("distance")
+
+	ret.ProcessedString = clientIP
+
+	if getISPInfo {
+		ispInfo := getIPInfo(clientIP)
+		ret.RawISPInfo = ispInfo
+
+		removeRegexp := regexp.MustCompile(`AS\d+\s`)
+		isp := removeRegexp.ReplaceAllString(ispInfo.Organization, "")
+
+		if isp == "" {
+			isp = "Unknown ISP"
+		}
+
+		if ispInfo.Country != "" {
+			isp += ", " + ispInfo.Country
+		}
+
+		if ispInfo.Location != "" {
+			isp += " (" + calculateDistance(ispInfo.Location, distanceUnit) + ")"
+		}
+
+		ret.ProcessedString += " - " + isp
+	}
+
+	render.JSON(w, r, ret)
+}