dashboard/app: control time externally from api.go

This way the tested code is independent of the time passage and the
tests are reliable.

3 files changed, 16 insertions, 12 deletions

diff --git a/dashboard/app/api.go b/dashboard/app/api.go
index 8ce6658cf..dad31c3df 100644
--- a/dashboard/app/api.go
+++ b/dashboard/app/api.go
@@ -105,7 +105,7 @@ func handleAPI(c context.Context, r *http.Request) (reply interface{}, err error
 	method := r.PostFormValue("method")
 	log.Infof(c, "api %q from %q", method, client)
 	auth := makeAuthEndpoint(googleTokenInfoEndpoint)
-	subj, err := auth.determineAuthSubj(r.Header["Authorization"])
+	subj, err := auth.determineAuthSubj(timeNow(c), r.Header["Authorization"])
 	if err != nil {
 		return nil, err
 	}
diff --git a/dashboard/app/auth.go b/dashboard/app/auth.go
index 25f20b10d..42d59e6ee 100644
--- a/dashboard/app/auth.go
+++ b/dashboard/app/auth.go
@@ -100,8 +100,9 @@ func (auth *authEndpoint) queryTokenInfo(tokenValue string) (*jwtClaims, error)
 
 // Returns the verified subject value based on the provided header
 // value or "" if it can't be determined. A valid result starts with
-// oauthMagic.
-func (auth *authEndpoint) determineAuthSubj(authHeader []string) (string, error) {
+// oauthMagic. The now parameter is the current time to compare the
+// claims against.
+func (auth *authEndpoint) determineAuthSubj(now time.Time, authHeader []string) (string, error) {
 	if len(authHeader) != 1 || !strings.HasPrefix(authHeader[0], "Bearer") {
 		// This is a normal case when the client uses a password.
 		return "", nil
@@ -117,7 +118,7 @@ func (auth *authEndpoint) determineAuthSubj(authHeader []string) (string, error)
 		err := fmt.Errorf("unexpected audience %v %v", claims.Audience, claims)
 		return "", err
 	}
-	if claims.Expiration.Before(time.Now()) {
+	if claims.Expiration.Before(now) {
 		err := fmt.Errorf("token past expiration %v", claims.Expiration)
 		return "", err
 	}
diff --git a/dashboard/app/auth_test.go b/dashboard/app/auth_test.go
index 18d6a8b82..ae52721e7 100644
--- a/dashboard/app/auth_test.go
+++ b/dashboard/app/auth_test.go
@@ -32,15 +32,16 @@ func reponseFor(t *testing.T, claims jwtClaims) (*httptest.Server, authEndpoint)
 }
 
 func TestBearerValid(t *testing.T) {
+	tm := time.Now()
 	magic := "ValidSubj"
 	ts, dut := reponseFor(t, jwtClaims{
 		Subject:    magic,
 		Audience:   dashapi.DashboardAudience,
-		Expiration: time.Now().AddDate(0, 0, 1),
+		Expiration: tm.AddDate(0, 0, 1),
 	})
 	defer ts.Close()
 
-	got, err := dut.determineAuthSubj([]string{"Bearer x"})
+	got, err := dut.determineAuthSubj(tm, []string{"Bearer x"})
 	if err != nil {
 		t.Errorf("Unexpected error %v", err)
 	}
@@ -50,28 +51,30 @@ func TestBearerValid(t *testing.T) {
 }
 
 func TestBearerWrongAudience(t *testing.T) {
+	tm := time.Now()
 	ts, dut := reponseFor(t, jwtClaims{
 		Subject:    "irrelevant",
-		Expiration: time.Now().AddDate(0, 0, 1),
+		Expiration: tm.AddDate(0, 0, 1),
 		Audience:   "junk",
 	})
 	defer ts.Close()
 
-	_, err := dut.determineAuthSubj([]string{"Bearer x"})
+	_, err := dut.determineAuthSubj(tm, []string{"Bearer x"})
 	if !strings.HasPrefix(err.Error(), "unexpected audience") {
 		t.Fatalf("Unexpected error %v", err)
 	}
 }
 
 func TestBearerExpired(t *testing.T) {
+	tm := time.Now()
 	ts, dut := reponseFor(t, jwtClaims{
 		Subject:    "irrelevant",
-		Expiration: time.Now().AddDate(0, 0, -1),
+		Expiration: tm.AddDate(0, 0, -1),
 		Audience:   dashapi.DashboardAudience,
 	})
 	defer ts.Close()
 
-	_, err := dut.determineAuthSubj([]string{"Bearer x"})
+	_, err := dut.determineAuthSubj(tm, []string{"Bearer x"})
 	if !strings.HasPrefix(err.Error(), "token past expiration") {
 		t.Fatalf("Unexpected error %v", err)
 	}
@@ -80,7 +83,7 @@ func TestBearerExpired(t *testing.T) {
 func TestMissingHeader(t *testing.T) {
 	ts, dut := reponseFor(t, jwtClaims{})
 	defer ts.Close()
-	got, err := dut.determineAuthSubj([]string{})
+	got, err := dut.determineAuthSubj(time.Now(), []string{})
 	if err != nil || got != "" {
 		t.Errorf("Unexpected error %v %v", got, err)
 	}
@@ -89,7 +92,7 @@ func TestMissingHeader(t *testing.T) {
 func TestBadHeader(t *testing.T) {
 	ts, dut := reponseFor(t, jwtClaims{})
 	defer ts.Close()
-	got, err := dut.determineAuthSubj([]string{"bad"})
+	got, err := dut.determineAuthSubj(time.Now(), []string{"bad"})
 	if err != nil || got != "" {
 		t.Errorf("Unexpected error %v %v", got, err)
 	}