add some test

Makefile

@@ -14,4 +14,4 @@ clean:
 
 .PHONY: test
 test:
-	go test ./...
+	go test ./... -v

cert/cert.go

@@ -41,6 +41,64 @@ type CA struct {
 	cacheMu sync.Mutex
 }
 
+func createCert() (*rsa.PrivateKey, *x509.Certificate, error) {
+	key, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	template := &x509.Certificate{
+		SerialNumber: big.NewInt(time.Now().UnixNano() / 100000),
+		Subject: pkix.Name{
+			CommonName:   "mitmproxy",
+			Organization: []string{"mitmproxy"},
+		},
+		NotBefore:             time.Now().Add(-time.Hour * 48),
+		NotAfter:              time.Now().Add(time.Hour * 24 * 365 * 3),
+		BasicConstraintsValid: true,
+		IsCA:                  true,
+		SignatureAlgorithm:    x509.SHA256WithRSA,
+		KeyUsage:              x509.KeyUsageCertSign | x509.KeyUsageCRLSign,
+		ExtKeyUsage: []x509.ExtKeyUsage{
+			x509.ExtKeyUsageServerAuth,
+			x509.ExtKeyUsageClientAuth,
+			x509.ExtKeyUsageEmailProtection,
+			x509.ExtKeyUsageTimeStamping,
+			x509.ExtKeyUsageCodeSigning,
+			x509.ExtKeyUsageMicrosoftCommercialCodeSigning,
+			x509.ExtKeyUsageMicrosoftServerGatedCrypto,
+			x509.ExtKeyUsageNetscapeServerGatedCrypto,
+		},
+	}
+
+	certBytes, err := x509.CreateCertificate(rand.Reader, template, template, &key.PublicKey, key)
+	if err != nil {
+		return nil, nil, err
+	}
+	cert, err := x509.ParseCertificate(certBytes)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return key, cert, nil
+}
+
+// Create new ca only live in memory, will change when process restart
+func NewCAMemory() (*CA, error) {
+	key, cert, err := createCert()
+	if err != nil {
+		return nil, err
+	}
+	return &CA{
+		PrivateKey: *key,
+		RootCert:   *cert,
+		StorePath:  "",
+		cache:      lru.New(100),
+		group:      new(singleflight.Group),
+	}, nil
+}
+
+// Load ca from store path or create new ca then store
 func NewCA(path string) (*CA, error) {
 	storePath, err := getStorePath(path)
 	if err != nil {
@@ -178,44 +236,12 @@ func (ca *CA) load() error {
 }
 
 func (ca *CA) create() error {
-	key, err := rsa.GenerateKey(rand.Reader, 2048)
+	key, cert, err := createCert()
 	if err != nil {
 		return err
 	}
-	ca.PrivateKey = *key
-
-	template := &x509.Certificate{
-		SerialNumber: big.NewInt(time.Now().UnixNano() / 100000),
-		Subject: pkix.Name{
-			CommonName:   "mitmproxy",
-			Organization: []string{"mitmproxy"},
-		},
-		NotBefore:             time.Now().Add(-time.Hour * 48),
-		NotAfter:              time.Now().Add(time.Hour * 24 * 365 * 3),
-		BasicConstraintsValid: true,
-		IsCA:                  true,
-		SignatureAlgorithm:    x509.SHA256WithRSA,
-		KeyUsage:              x509.KeyUsageCertSign | x509.KeyUsageCRLSign,
-		ExtKeyUsage: []x509.ExtKeyUsage{
-			x509.ExtKeyUsageServerAuth,
-			x509.ExtKeyUsageClientAuth,
-			x509.ExtKeyUsageEmailProtection,
-			x509.ExtKeyUsageTimeStamping,
-			x509.ExtKeyUsageCodeSigning,
-			x509.ExtKeyUsageMicrosoftCommercialCodeSigning,
-			x509.ExtKeyUsageMicrosoftServerGatedCrypto,
-			x509.ExtKeyUsageNetscapeServerGatedCrypto,
-		},
-	}
 
-	certBytes, err := x509.CreateCertificate(rand.Reader, template, template, &key.PublicKey, key)
-	if err != nil {
-		return err
-	}
-	cert, err := x509.ParseCertificate(certBytes)
-	if err != nil {
-		return err
-	}
+	ca.PrivateKey = *key
 	ca.RootCert = *cert
 
 	if err := ca.save(); err != nil {

proxy/proxy_test.go

@@ -0,0 +1,143 @@
+package proxy
+
+import (
+	"crypto/tls"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/lqqyt2423/go-mitmproxy/cert"
+)
+
+func handleError(t *testing.T, err error) {
+	t.Helper()
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestProxy(t *testing.T) {
+	// start http server
+	ln, err := net.Listen("tcp", "127.0.0.1:0")
+	handleError(t, err)
+	defer ln.Close()
+	go http.Serve(ln, nil)
+
+	// start https server
+	tlsLn, err := net.Listen("tcp", "127.0.0.1:0")
+	handleError(t, err)
+	defer tlsLn.Close()
+	ca, err := cert.NewCAMemory()
+	handleError(t, err)
+	cert, err := ca.GetCert("localhost")
+	handleError(t, err)
+	tlsConfig := &tls.Config{
+		Certificates: []tls.Certificate{*cert},
+	}
+	go http.Serve(tls.NewListener(tlsLn, tlsConfig), nil)
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		w.Write([]byte("ok"))
+	})
+
+	httpEndpoint := "http://" + ln.Addr().String() + "/"
+	httpsPort := tlsLn.Addr().(*net.TCPAddr).Port
+	httpsEndpoint := "https://localhost:" + strconv.Itoa(httpsPort) + "/"
+
+	t.Run("test http server", func(t *testing.T) {
+		resp, err := http.Get(httpEndpoint)
+		handleError(t, err)
+		defer resp.Body.Close()
+		body, err := ioutil.ReadAll(resp.Body)
+		handleError(t, err)
+		if string(body) != "ok" {
+			t.Fatal("expected ok, bug got", string(body))
+		}
+	})
+
+	t.Run("test https server", func(t *testing.T) {
+		t.Run("should generate not trusted error", func(t *testing.T) {
+			_, err := http.Get(httpsEndpoint)
+			if err == nil {
+				t.Fatal("should have error")
+			}
+			if !strings.Contains(err.Error(), "certificate is not trusted") {
+				t.Fatal("should get not trusted error, but got", err.Error())
+			}
+		})
+
+		t.Run("should get ok when InsecureSkipVerify", func(t *testing.T) {
+			client := &http.Client{
+				Transport: &http.Transport{
+					TLSClientConfig: &tls.Config{
+						InsecureSkipVerify: true,
+					},
+				},
+			}
+			req, err := http.NewRequest("GET", httpsEndpoint, nil)
+			handleError(t, err)
+			resp, err := client.Do(req)
+			handleError(t, err)
+			defer resp.Body.Close()
+			body, err := ioutil.ReadAll(resp.Body)
+			handleError(t, err)
+			if string(body) != "ok" {
+				t.Fatal("expected ok, bug got", string(body))
+			}
+		})
+	})
+
+	// start proxy
+	testProxy, err := NewProxy(&Options{
+		Addr:        ":29080", // some random port
+		SslInsecure: true,
+	})
+	handleError(t, err)
+	testProxy.AddAddon(&LogAddon{})
+	go testProxy.Start()
+	time.Sleep(time.Millisecond * 10) // wait for test proxy startup
+
+	t.Run("test proxy", func(t *testing.T) {
+		client := &http.Client{
+			Transport: &http.Transport{
+				TLSClientConfig: &tls.Config{
+					InsecureSkipVerify: true,
+				},
+				Proxy: func(r *http.Request) (*url.URL, error) {
+					return url.Parse("http://127.0.0.1:29080")
+				},
+			},
+		}
+
+		t.Run("can proxy http", func(t *testing.T) {
+			req, err := http.NewRequest("GET", httpEndpoint, nil)
+			handleError(t, err)
+			resp, err := client.Do(req)
+			handleError(t, err)
+			defer resp.Body.Close()
+			body, err := ioutil.ReadAll(resp.Body)
+			handleError(t, err)
+			if string(body) != "ok" {
+				t.Fatal("expected ok, bug got", string(body))
+			}
+		})
+
+		t.Run("can proxy https", func(t *testing.T) {
+			req, err := http.NewRequest("GET", httpsEndpoint, nil)
+			handleError(t, err)
+			resp, err := client.Do(req)
+			handleError(t, err)
+			defer resp.Body.Close()
+			body, err := ioutil.ReadAll(resp.Body)
+			handleError(t, err)
+			if string(body) != "ok" {
+				t.Fatal("expected ok, bug got", string(body))
+			}
+		})
+	})
+}