add test files

.travis.yml

@@ -5,5 +5,5 @@ go:
 
 install: true
 script:
-  - go test -v
+  - go test -race -v
   - cd cmd/gost && go build
\ No newline at end of file

cmd/gost/main.go

@@ -56,6 +56,7 @@ func init() {
 		os.Exit(0)
 	}
 
+	gost.SetLogger(&gost.LogLogger{})
 	gost.Debug = options.DebugMode
 }
 
@@ -313,18 +314,11 @@ func serve(chain *gost.Chain) error {
 			if whitelist, err = gost.ParsePermissions(node.Values.Get("whitelist")); err != nil {
 				return err
 			}
-		} else {
-			// By default allow for everything
-			whitelist, _ = gost.ParsePermissions("*:*:*")
 		}
-
 		if node.Values.Get("blacklist") != "" {
 			if blacklist, err = gost.ParsePermissions(node.Values.Get("blacklist")); err != nil {
 				return err
 			}
-		} else {
-			// By default block nothing
-			blacklist, _ = gost.ParsePermissions("")
 		}
 
 		var handlerOptions []gost.HandlerOption
@@ -366,7 +360,8 @@ func serve(chain *gost.Chain) error {
 		default:
 			handler = gost.AutoHandler(handlerOptions...)
 		}
-		go new(gost.Server).Serve(ln, handler)
+		srv := &gost.Server{Listener: ln}
+		go srv.Serve(handler)
 	}
 
 	return nil

gost.go

@@ -64,7 +64,7 @@ func init() {
 		Certificates: []tls.Certificate{cert},
 	}
 
-	log.DefaultLogger = &LogLogger{}
+	// log.DefaultLogger = &LogLogger{}
 }
 
 // SetLogger sets a new logger for internal log system

http_test.go

+package gost
+
+import (
+	"bufio"
+	"bytes"
+	"crypto/rand"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"testing"
+)
+
+var httpTestHandler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	io.Copy(w, r.Body)
+})
+
+func httpProxyRoundtrip(urlStr string, cliUser *url.Userinfo, srvUsers []*url.Userinfo, body io.Reader) (statusCode int, recv []byte, err error) {
+	ln, err := TCPListener("")
+	if err != nil {
+		return
+	}
+	h := HTTPHandler(UsersHandlerOption(srvUsers...))
+	server := &Server{Listener: ln}
+	go server.Serve(h)
+
+	exitChan := make(chan struct{})
+	defer close(exitChan)
+	go func() {
+		defer server.Close()
+		<-exitChan
+	}()
+
+	client := &Client{
+		Connector:   HTTPConnector(cliUser),
+		Transporter: TCPTransporter(),
+	}
+	conn, err := client.Dial(ln.Addr().String())
+	if err != nil {
+		return
+	}
+	defer conn.Close()
+	conn, err = client.Handshake(conn)
+	if err != nil {
+		return
+	}
+	url, err := url.Parse(urlStr)
+	if err != nil {
+		return
+	}
+	conn, err = client.Connect(conn, url.Host)
+	if err != nil {
+		return
+	}
+	req, err := http.NewRequest(http.MethodGet, urlStr, body)
+	if err != nil {
+		return
+	}
+	if err = req.Write(conn); err != nil {
+		return
+	}
+	resp, err := http.ReadResponse(bufio.NewReader(conn), req)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+	statusCode = resp.StatusCode
+	recv, err = ioutil.ReadAll(resp.Body)
+	return
+}
+
+var httpProxyTests = []struct {
+	url      string
+	cliUser  *url.Userinfo
+	srvUsers []*url.Userinfo
+	errStr   string
+}{
+	{"", nil, nil, ""},
+	{"", nil, []*url.Userinfo{url.User("admin")}, "407 Proxy Authentication Required"},
+	{"", nil, []*url.Userinfo{url.UserPassword("", "123456")}, "407 Proxy Authentication Required"},
+	{"", url.User("admin"), []*url.Userinfo{url.User("test")}, "407 Proxy Authentication Required"},
+	{"", url.User("admin"), []*url.Userinfo{url.UserPassword("admin", "123456")}, "407 Proxy Authentication Required"},
+	{"", url.User("admin"), []*url.Userinfo{url.User("admin")}, ""},
+	{"", url.User("admin"), []*url.Userinfo{url.UserPassword("admin", "")}, ""},
+	{"", url.UserPassword("admin", "123456"), nil, ""},
+	{"", url.UserPassword("admin", "123456"), []*url.Userinfo{url.User("admin")}, ""},
+	{"", url.UserPassword("admin", "123456"), []*url.Userinfo{url.UserPassword("", "123456")}, ""},
+	{"", url.UserPassword("", "123456"), []*url.Userinfo{url.UserPassword("", "123456")}, ""},
+	{"", url.UserPassword("admin", "123456"), []*url.Userinfo{url.UserPassword("admin", "123456")}, ""},
+	{"", url.UserPassword("admin", "123456"), []*url.Userinfo{url.UserPassword("user", "pass"), url.UserPassword("admin", "123456")}, ""},
+	{"http://:0", nil, nil, "503 Service unavailable"},
+}
+
+func TestHTTPProxy(t *testing.T) {
+	Debug = true
+	httpSrv := httptest.NewServer(httpTestHandler)
+	defer httpSrv.Close()
+
+	for _, test := range httpProxyTests {
+		send := make([]byte, 16)
+		rand.Read(send)
+		urlStr := test.url
+		if urlStr == "" {
+			urlStr = httpSrv.URL
+		}
+		_, recv, err := httpProxyRoundtrip(urlStr, test.cliUser, test.srvUsers, bytes.NewReader(send))
+		if err == nil {
+			if test.errStr != "" {
+				t.Errorf("HTTP proxy response should failed with error %s", test.errStr)
+				continue
+			}
+		} else {
+			if test.errStr == "" {
+				t.Errorf("HTTP proxy got error %v", err)
+			}
+			if err.Error() != test.errStr {
+				t.Errorf("HTTP proxy got error %v, want %v", err, test.errStr)
+			}
+			continue
+		}
+		if !bytes.Equal(send, recv) {
+			t.Errorf("got %v, want %v", recv, send)
+			continue
+		}
+	}
+}

node.go

 package gost
 
 import (
-	"net"
 	"net/url"
-	"strconv"
 	"strings"
 )
 
@@ -24,6 +22,10 @@ type Node struct {
 // The proxy node string pattern is [scheme://][user:pass@host]:port.
 // Scheme can be divided into two parts by character '+', such as: http+tls.
 func ParseNode(s string) (node Node, err error) {
+	if s == "" {
+		return Node{}, nil
+	}
+
 	if !strings.Contains(s, "://") {
 		s = "auto://" + s
 	}
@@ -58,7 +60,7 @@ func ParseNode(s string) (node Node, err error) {
 	case "rtcp", "rudp": // rtcp and rudp are for remote port forwarding
 		node.Remote = strings.Trim(u.EscapedPath(), "/")
 	default:
-		node.Transport = ""
+		node.Transport = "tcp"
 	}
 
 	switch node.Protocol {
@@ -74,23 +76,3 @@ func ParseNode(s string) (node Node, err error) {
 
 	return
 }
-
-// Can tests whether the given action and address is allowed by the whitelist and blacklist.
-func Can(action string, addr string, whitelist, blacklist *Permissions) bool {
-	if !strings.Contains(addr, ":") {
-		addr = addr + ":80"
-	}
-	host, strport, err := net.SplitHostPort(addr)
-
-	if err != nil {
-		return false
-	}
-
-	port, err := strconv.Atoi(strport)
-
-	if err != nil {
-		return false
-	}
-
-	return whitelist.Can(action, host, port) && !blacklist.Can(action, host, port)
-}

node_test.go

+package gost
+
+import "testing"
+import "net/url"
+
+var nodeTests = []struct {
+	in       string
+	out      Node
+	hasError bool
+}{
+	{"", Node{}, false},
+	{"://", Node{}, true},
+	{"localhost", Node{Addr: "localhost", Transport: "tcp"}, false},
+	{":", Node{Addr: ":", Transport: "tcp"}, false},
+	{":8080", Node{Addr: ":8080", Transport: "tcp"}, false},
+	{"http://:8080", Node{Addr: ":8080", Protocol: "http", Transport: "tcp"}, false},
+	{"http://localhost:8080", Node{Addr: "localhost:8080", Protocol: "http", Transport: "tcp"}, false},
+	{"http://admin:123456@:8080", Node{Addr: ":8080", Protocol: "http", Transport: "tcp", User: url.UserPassword("admin", "123456")}, false},
+	{"http://admin@localhost:8080", Node{Addr: "localhost:8080", Protocol: "http", Transport: "tcp", User: url.User("admin")}, false},
+	{"http://:123456@localhost:8080", Node{Addr: "localhost:8080", Protocol: "http", Transport: "tcp", User: url.UserPassword("", "123456")}, false},
+	{"http://@localhost:8080", Node{Addr: "localhost:8080", Protocol: "http", Transport: "tcp", User: url.User("")}, false},
+	{"http://:@localhost:8080", Node{Addr: "localhost:8080", Protocol: "http", Transport: "tcp", User: url.UserPassword("", "")}, false},
+	{"https://:8080", Node{Addr: ":8080", Protocol: "http", Transport: "tls"}, false},
+	{"socks+tls://:8080", Node{Addr: ":8080", Protocol: "socks5", Transport: "tls"}, false},
+	{"tls://:8080", Node{Addr: ":8080", Transport: "tls"}, false},
+	{"tcp://:8080/:8081", Node{Addr: ":8080", Remote: ":8081", Protocol: "tcp", Transport: "tcp"}, false},
+	{"udp://:8080/:8081", Node{Addr: ":8080", Remote: ":8081", Protocol: "udp", Transport: "udp"}, false},
+	{"rtcp://:8080/:8081", Node{Addr: ":8080", Remote: ":8081", Protocol: "rtcp", Transport: "rtcp"}, false},
+	{"rudp://:8080/:8081", Node{Addr: ":8080", Remote: ":8081", Protocol: "rudp", Transport: "rudp"}, false},
+	{"redirect://:8080", Node{Addr: ":8080", Protocol: "redirect", Transport: "tcp"}, false},
+}
+
+func TestParseNode(t *testing.T) {
+	for _, test := range nodeTests {
+		actual, err := ParseNode(test.in)
+		if err != nil {
+			if test.hasError {
+				t.Logf("ParseNode(%q) got expected error: %v", test.in, err)
+				continue
+			}
+			t.Errorf("ParseNode(%q) got error: %v", test.in, err)
+		} else {
+			if test.hasError {
+				t.Errorf("ParseNode(%q) got %v, but should return error", test.in, actual)
+				continue
+			}
+			if actual.Addr != test.out.Addr || actual.Protocol != test.out.Protocol ||
+				actual.Transport != test.out.Transport || actual.Remote != test.out.Remote {
+				t.Errorf("ParseNode(%q) got %v, want %v", test.in, actual, test.out)
+			}
+			if actual.User == nil {
+				if test.out.User != nil {
+					t.Errorf("ParseNode(%q) got %v, want %v", test.in, actual, test.out)
+				}
+				continue
+			}
+			if actual.User != nil {
+				if test.out.User == nil {
+					t.Errorf("ParseNode(%q) got %v, want %v", test.in, actual, test.out)
+					continue
+				}
+				if *actual.User != *test.out.User {
+					t.Errorf("ParseNode(%q) got %v, want %v", test.in, actual, test.out)
+				}
+			}
+		}
+	}
+}

permissions.go

@@ -3,6 +3,7 @@ package gost
 import (
 	"errors"
 	"fmt"
+	"net"
 	"strconv"
 	"strings"
 
@@ -199,3 +200,24 @@ func maxint(x, y int) int {
 	}
 	return y
 }
+
+// Can tests whether the given action and address is allowed by the whitelist and blacklist.
+func Can(action string, addr string, whitelist, blacklist *Permissions) bool {
+	if !strings.Contains(addr, ":") {
+		addr = addr + ":80"
+	}
+	host, strport, err := net.SplitHostPort(addr)
+
+	if err != nil {
+		return false
+	}
+
+	port, err := strconv.Atoi(strport)
+
+	if err != nil {
+		return false
+	}
+
+	return (whitelist == nil || whitelist.Can(action, host, port)) &&
+		(blacklist == nil || !blacklist.Can(action, host, port))
+}

server.go

@@ -10,23 +10,33 @@ import (
 
 // Server is a proxy server.
 type Server struct {
+	Listener Listener
 }
 
-// Serve serves as a proxy server.
-func (s *Server) Serve(l net.Listener, h Handler) error {
-	defer l.Close()
+// Addr returns the address of the server
+func (s *Server) Addr() net.Addr {
+	return s.Listener.Addr()
+}
+
+// Close closes the server
+func (s *Server) Close() error {
+	return s.Listener.Close()
+}
 
-	if l == nil {
-		ln, err := TCPListener(":8080")
+// Serve serves as a proxy server.
+func (s *Server) Serve(h Handler) error {
+	if s.Listener == nil {
+		ln, err := TCPListener("")
 		if err != nil {
 			return err
 		}
-		l = ln
+		s.Listener = ln
 	}
 	if h == nil {
 		h = HTTPHandler()
 	}
 
+	l := s.Listener
 	var tempDelay time.Duration
 	for {
 		conn, e := l.Accept()
@@ -63,11 +73,15 @@ type tcpListener struct {
 
 // TCPListener creates a Listener for TCP proxy server.
 func TCPListener(addr string) (Listener, error) {
-	ln, err := net.Listen("tcp", addr)
+	laddr, err := net.ResolveTCPAddr("tcp", addr)
+	if err != nil {
+		return nil, err
+	}
+	ln, err := net.ListenTCP("tcp", laddr)
 	if err != nil {
 		return nil, err
 	}
-	return &tcpListener{Listener: tcpKeepAliveListener{ln.(*net.TCPListener)}}, nil
+	return &tcpListener{Listener: tcpKeepAliveListener{ln}}, nil
 }
 
 type tcpKeepAliveListener struct {