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|
package net
import (
"embed"
"log"
"net"
"net/http"
"strings"
"github.com/gorilla/websocket"
)
//go:embed terminal.html
var terminalHTML embed.FS
var upgrader = websocket.Upgrader{
ReadBufferSize: 1024,
WriteBufferSize: 1024,
CheckOrigin: func(r *http.Request) bool {
origin := r.Header.Get("Origin")
if origin == "" {
return true
}
host := r.Host
hostname, _, err := net.SplitHostPort(host)
if err != nil {
hostname = host
}
if strings.EqualFold(origin, "http://"+host) ||
strings.EqualFold(origin, "https://"+host) ||
strings.EqualFold(origin, "http://"+hostname) ||
strings.EqualFold(origin, "https://"+hostname) {
return true
}
if hn, _, err := net.SplitHostPort(r.RemoteAddr); err == nil &&
(hn == "127.0.0.1" || hn == "::1") {
return true
}
log.Printf("ws rejected origin: %s (host: %s)", origin, r.Host)
return false
},
}
func newHTTPMux(s *Server) *http.ServeMux {
mux := http.NewServeMux()
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
data, err := terminalHTML.ReadFile("terminal.html")
if err != nil {
http.Error(w, "not found", http.StatusNotFound)
return
}
w.Header().Set("Content-Type", "text/html; charset=utf-8")
w.Write(data)
})
mux.HandleFunc("/ws", func(w http.ResponseWriter, r *http.Request) {
ws, err := upgrader.Upgrade(w, r, nil)
if err != nil {
log.Printf("ws upgrade error: %v", err)
return
}
sess := &Session{
Conn: newWSConn(ws),
State: StateAccountName,
}
s.hub.Add(sess)
go s.handleSession(sess, s.handler)
})
return mux
}
|
