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http_server.go
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http_server.go
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package main
import (
"net/http"
"strings"
"sync"
"github.com/gorilla/websocket"
"github.com/polevpn/elog"
"github.com/polevpn/h3conn"
"github.com/quic-go/quic-go/http3"
)
const (
TCP_WRITE_BUFFER_SIZE = 524288
TCP_READ_BUFFER_SIZE = 524288
)
type HttpServer struct {
requestHandler *RequestHandler
loginchecker LoginChecker
upgrader *websocket.Upgrader
uplimit uint64
downlimit uint64
}
func NewHttpServer(uplimit uint64, downlimit uint64, requestHandler *RequestHandler) *HttpServer {
upgrader := &websocket.Upgrader{
CheckOrigin: func(r *http.Request) bool {
return true
},
EnableCompression: false,
}
return &HttpServer{requestHandler: requestHandler, upgrader: upgrader, uplimit: uplimit, downlimit: downlimit}
}
func (hs *HttpServer) SetLoginCheckHandler(loginchecker LoginChecker) {
hs.loginchecker = loginchecker
}
func (hs *HttpServer) defaultHandler(w http.ResponseWriter, r *http.Request) {
hs.respError(http.StatusForbidden, w)
}
func (hs *HttpServer) ListenTLS(wg *sync.WaitGroup, addr string, certFile string, keyFile string) {
defer wg.Done()
handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path == "/" {
if r.ProtoAtLeast(3, 0) {
hs.h3Handler(w, r)
} else {
hs.wsHandler(w, r)
}
} else {
hs.defaultHandler(w, r)
}
})
elog.Error(http3.ListenAndServeTLS(addr, certFile, keyFile, handler))
}
func (hs *HttpServer) respError(status int, w http.ResponseWriter) {
if status == http.StatusBadRequest {
w.Header().Add("Server", "nginx/1.10.3")
w.WriteHeader(http.StatusBadRequest)
w.Write([]byte("<html>\n<head><title>400 Bad Request</title></head>\n<body bgcolor=\"white\">\n<center><h1>400 Bad Request</h1></center>\n<hr><center>nginx/1.10.3</center>\n</body>\n</html>"))
} else if status == http.StatusForbidden {
w.Header().Add("Server", "nginx/1.10.3")
w.WriteHeader(http.StatusForbidden)
w.Write([]byte("<html>\n<head><title>403 Forbidden</title></head>\n<body bgcolor=\"white\">\n<center><h1>403 Forbidden</h1></center>\n<hr><center>nginx/1.10.3</center>\n</body>\n</html>"))
}
}
func (hs *HttpServer) h3Handler(w http.ResponseWriter, r *http.Request) {
defer PanicHandler()
user := r.URL.Query().Get("user")
pwd := r.URL.Query().Get("pwd")
ip := r.URL.Query().Get("ip")
deviceType := r.URL.Query().Get("deviceType")
deviceId := r.URL.Query().Get("deviceId")
if user == "" || pwd == "" {
hs.respError(http.StatusForbidden, w)
return
}
elog.Infof("user:%v,ip:%v,deviceType:%v,deviceId:%v,remoteip:%v connect,xff:%v", user, ip, deviceType, deviceId, r.RemoteAddr, r.Header.Get("X-Forwarded-For"))
err := hs.loginchecker.CheckLogin(user, pwd, strings.Split(r.RemoteAddr, ":")[0], deviceType, deviceId)
if err != nil {
elog.Errorf("user:%v,pwd:%v,ip:%v verify fail,%v", user, pwd, ip, err)
hs.respError(http.StatusForbidden, w)
return
}
if ip != "" {
if !hs.requestHandler.connmgr.CheckAndAllocAddress(user, ip) {
elog.Errorf("user:%v,pwd:%v,ip:%v reconnect fail,ip address not alloc to it", user, pwd, ip)
hs.respError(http.StatusBadRequest, w)
return
}
if hs.requestHandler.connmgr.GetIPAttachUser(ip) != "" && hs.requestHandler.connmgr.GetIPAttachUser(ip) != user {
elog.Errorf("user:%v,pwd:%v,ip:%v reconnect fail,ip address not belong to the user", user, pwd, ip)
hs.respError(http.StatusBadRequest, w)
return
}
}
conn, err := h3conn.Accept(w, r)
if err != nil {
elog.Error("upgrade http request to h3 fail", err)
return
}
elog.Info("accpet new h3 conn from ", user, " ", conn.RemoteAddr().String())
if hs.requestHandler == nil {
elog.Error("request dispatcher haven't set")
return
}
if hs.requestHandler != nil {
h3conn := NewHttp3Conn(conn, hs.downlimit, hs.uplimit, hs.requestHandler)
hs.requestHandler.OnConnection(h3conn, user, ip)
go h3conn.Read()
go h3conn.Write()
} else {
elog.Error("h3 conn handler haven't set")
conn.Close()
}
}
func (hs *HttpServer) wsHandler(w http.ResponseWriter, r *http.Request) {
defer PanicHandler()
user := r.URL.Query().Get("user")
pwd := r.URL.Query().Get("pwd")
ip := r.URL.Query().Get("ip")
deviceType := r.URL.Query().Get("deviceType")
deviceId := r.URL.Query().Get("deviceId")
if user == "" || pwd == "" {
hs.respError(http.StatusForbidden, w)
return
}
elog.Infof("user:%v,ip:%v,deviceType:%v,deviceId:%v,remoteip:%v connect,xff:%v", user, ip, deviceType, deviceId, r.RemoteAddr, r.Header.Get("X-Forwarded-For"))
err := hs.loginchecker.CheckLogin(user, pwd, strings.Split(r.RemoteAddr, ":")[0], deviceType, deviceId)
if err != nil {
elog.Errorf("user:%v,pwd:%v,ip:%v verify fail,%v", user, pwd, ip, err)
hs.respError(http.StatusForbidden, w)
return
}
if ip != "" {
if !hs.requestHandler.connmgr.CheckAndAllocAddress(user, ip) {
elog.Errorf("user:%v,pwd:%v,ip:%v reconnect fail,ip address not alloc to it", user, pwd, ip)
hs.respError(http.StatusBadRequest, w)
return
}
if hs.requestHandler.connmgr.GetIPAttachUser(ip) != "" && hs.requestHandler.connmgr.GetIPAttachUser(ip) != user {
elog.Errorf("user:%v,pwd:%v,ip:%v reconnect fail,ip address not belong to the user", user, pwd, ip)
hs.respError(http.StatusBadRequest, w)
return
}
}
conn, err := hs.upgrader.Upgrade(w, r, nil)
if err != nil {
elog.Error("upgrade http request to ws fail,", err)
return
}
elog.Info("accpet new ws conn from ", user, " ", conn.RemoteAddr().String())
if hs.requestHandler == nil {
elog.Error("request dispatcher haven't set")
return
}
if hs.requestHandler != nil {
wsconn := NewWebSocketConn(conn, hs.downlimit, hs.uplimit, hs.requestHandler)
hs.requestHandler.OnConnection(wsconn, user, ip)
go wsconn.Read()
go wsconn.Write()
} else {
elog.Error("ws conn handler haven't set")
conn.Close()
}
}