1 files changed, 307 insertions, 0 deletions
diff --git a/api/auth/auth_test.go b/api/auth/auth_test.go
new file mode 100644
index 0000000..5e67c6d
--- /dev/null
+++ b/api/auth/auth_test.go
@@ -0,0 +1,307 @@
+package auth_test
+
+import (
+	"database/sql"
+	"log"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"strings"
+	"testing"
+	"time"
+
+	"git.hatecomputers.club/hatecomputers/hatecomputers.club/api/auth"
+	"git.hatecomputers.club/hatecomputers/hatecomputers.club/api/types"
+	"git.hatecomputers.club/hatecomputers/hatecomputers.club/args"
+	"git.hatecomputers.club/hatecomputers/hatecomputers.club/database"
+	"git.hatecomputers.club/hatecomputers/hatecomputers.club/utils"
+	"golang.org/x/oauth2"
+)
+
+func IdContinuation(context *types.RequestContext, req *http.Request, resp http.ResponseWriter) types.ContinuationChain {
+	return func(success types.Continuation, _failure types.Continuation) types.ContinuationChain {
+		return success(context, req, resp)
+	}
+}
+
+func FakedOauthServer() *httptest.Server {
+	oauthServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/auth" {
+			code := utils.RandomId()
+
+			state := r.URL.Query().Get("state")
+			redirectPath := r.URL.Query().Get("redirect_uri")
+			redirectPath += "?code=" + code + "&state=" + state
+
+			http.Redirect(w, r, redirectPath, http.StatusFound)
+		}
+		if r.URL.Path == "/token" {
+			w.Header().Set("Content-Type", "application/json")
+			w.Write([]byte(`{"access_token":"test","token_type":"bearer","expires_in":3600,"refresh_token":"test","scope":"test"}`))
+		}
+		if r.URL.Path == "/user" {
+			w.Header().Set("Content-Type", "application/json")
+			w.Write([]byte(`{"sub":"test","name":"test","preferred_username":"test@domain.com"}`))
+		}
+	}))
+
+	return oauthServer
+}
+
+func EchoUsernameContinuation(context *types.RequestContext, req *http.Request, resp http.ResponseWriter) types.ContinuationChain {
+	return func(success types.Continuation, failure types.Continuation) types.ContinuationChain {
+		resp.Write([]byte(context.User.Username))
+		return success(context, req, resp)
+	}
+}
+
+func MockUserEndpointServer(context *types.RequestContext) *httptest.Server {
+	testServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/protected-path" {
+			auth.VerifySessionContinuation(context, r, w)(IdContinuation, auth.GoLoginContinuation)(IdContinuation, IdContinuation)
+		}
+
+		if r.URL.Path == "/login" {
+			log.Println("login")
+			auth.StartSessionContinuation(context, r, w)(IdContinuation, IdContinuation)
+		}
+
+		if r.URL.Path == "/callback" {
+			log.Println("callback")
+			auth.InterceptOauthCodeContinuation(context, r, w)(IdContinuation, IdContinuation)
+		}
+
+		if r.URL.Path == "/me" {
+			auth.VerifySessionContinuation(context, r, w)(auth.RefreshSessionContinuation, auth.GoLoginContinuation)(EchoUsernameContinuation, IdContinuation)(IdContinuation, IdContinuation)
+		}
+
+		if r.URL.Path == "/logout" {
+			auth.LogoutContinuation(context, r, w)(IdContinuation, IdContinuation)
+		}
+	}))
+	return testServer
+}
+
+func setup() (*sql.DB, *types.RequestContext, *httptest.Server, *httptest.Server, func()) {
+	randomDb := utils.RandomId()
+
+	testDb := database.MakeConn(&randomDb)
+	database.Migrate(testDb)
+
+	context := &types.RequestContext{
+		DBConn:       testDb,
+		Args:         &args.Arguments{},
+		TemplateData: &(map[string]interface{}{}),
+	}
+
+	oauthServer := FakedOauthServer()
+	testServer := MockUserEndpointServer(context)
+
+	return testDb, context, oauthServer, testServer, func() {
+		oauthServer.Close()
+		testServer.Close()
+
+		testDb.Close()
+		os.Remove(randomDb)
+	}
+}
+
+func GetOauthConfig(oauthServerURL string, testServerURL string) (*oauth2.Config, string) {
+	return &oauth2.Config{
+		ClientID:     "test",
+		ClientSecret: "test",
+		Scopes:       []string{"test"},
+		Endpoint: oauth2.Endpoint{
+			AuthURL:  oauthServerURL + "/auth",
+			TokenURL: oauthServerURL + "/token",
+		},
+		RedirectURL: testServerURL + "/callback",
+	}, oauthServerURL + "/user"
+}
+
+func FollowAuthentication(
+	oauthServer *httptest.Server,
+	testServer *httptest.Server,
+	cookies map[string]*http.Cookie,
+	location string,
+) (map[string]*http.Cookie, string) {
+	resp := httptest.NewRecorder()
+	resp.Code = 0
+
+	for resp.Code == 0 || resp.Code == http.StatusFound {
+		req := httptest.NewRequest("GET", location, nil)
+		resp = httptest.NewRecorder()
+
+		for _, cookie := range cookies {
+			req.AddCookie(cookie)
+		}
+		if strings.HasPrefix(location, oauthServer.URL) {
+			oauthServer.Config.Handler.ServeHTTP(resp, req)
+		} else {
+			testServer.Config.Handler.ServeHTTP(resp, req)
+		}
+		for _, cookie := range resp.Result().Cookies() {
+			cookies[cookie.Name] = cookie
+		}
+
+		if resp.Code == http.StatusFound {
+			location = resp.Header().Get("Location")
+		}
+	}
+
+	return cookies, location
+}
+
+func TestOauthCreatesUserWithCorrectUsername(t *testing.T) {
+	db, context, oauthServer, testServer, cleanup := setup()
+	defer cleanup()
+
+	context.Args.OauthConfig, context.Args.OauthUserInfoURI = GetOauthConfig(oauthServer.URL, testServer.URL)
+
+	user, _ := database.GetUser(db, "test")
+	if user != nil {
+		t.Errorf("expected no user, got user")
+	}
+
+	cookies := make(map[string]*http.Cookie)
+	cookies, _ = FollowAuthentication(oauthServer, testServer, cookies, "/me")
+
+	user, _ = database.GetUser(db, "test")
+	if user == nil {
+		t.Errorf("expected a user to be created, could not find user")
+	}
+	if user.Username != "test" {
+		t.Errorf("expected username to be test, got %s", user.Username)
+	}
+}
+
+func TestOauthRedirectsToPreviousLockedPage(t *testing.T) {
+	_, context, oauthServer, testServer, cleanup := setup()
+	defer cleanup()
+
+	context.Args.OauthConfig, context.Args.OauthUserInfoURI = GetOauthConfig(oauthServer.URL, testServer.URL)
+
+	req := httptest.NewRequest("GET", "/protected-path", nil)
+	resp := httptest.NewRecorder()
+	testServer.Config.Handler.ServeHTTP(resp, req)
+	location := resp.Header().Get("Location")
+	if resp.Code != http.StatusFound && !strings.HasSuffix(location, "/login") {
+		t.Errorf("expected redirect to /login, got %d and %s", resp.Code, resp.Header().Get("Location"))
+	}
+
+	cookies := make(map[string]*http.Cookie)
+	cookies, location = FollowAuthentication(oauthServer, testServer, cookies, "/protected-page")
+
+	if !(strings.HasSuffix(location, "/protected-page")) {
+		t.Errorf("expected to redirect back to /protected-page after login, got %s", location)
+	}
+}
+
+func TestOauthSetsUniqueSession(t *testing.T) {
+	db, context, oauthServer, testServer, cleanup := setup()
+	defer cleanup()
+
+	context.Args.OauthConfig, context.Args.OauthUserInfoURI = GetOauthConfig(oauthServer.URL, testServer.URL)
+
+	cookies := make(map[string]*http.Cookie)
+	cookies, _ = FollowAuthentication(oauthServer, testServer, cookies, "/me")
+
+	cookiesAgain := make(map[string]*http.Cookie)
+	cookiesAgain, _ = FollowAuthentication(oauthServer, testServer, cookiesAgain, "/me")
+
+	sessionOne := cookies["session"].Value
+	sessionTwo := cookiesAgain["session"].Value
+	if sessionOne == sessionTwo {
+		t.Errorf("expected unique session ids, got %s and %s", sessionOne, sessionTwo)
+	}
+
+	session, _ := database.GetSession(db, sessionOne)
+	if session.UserID != "test" {
+		t.Errorf("expected session to be associated with user test, got %s", session.UserID)
+	}
+}
+
+func TestLogoutClearsSession(t *testing.T) {
+	db, context, oauthServer, testServer, cleanup := setup()
+	defer cleanup()
+
+	context.Args.OauthConfig, context.Args.OauthUserInfoURI = GetOauthConfig(oauthServer.URL, testServer.URL)
+
+	cookies := make(map[string]*http.Cookie)
+	cookies, _ = FollowAuthentication(oauthServer, testServer, cookies, "/me")
+
+	req := httptest.NewRequest("GET", "/logout", nil)
+	for _, cookie := range cookies {
+		req.AddCookie(cookie)
+	}
+	resp := httptest.NewRecorder()
+	testServer.Config.Handler.ServeHTTP(resp, req)
+	for _, cookie := range resp.Result().Cookies() {
+		cookies[cookie.Name] = cookie
+	}
+
+	req = httptest.NewRequest("GET", "/me", nil)
+	for _, cookie := range cookies {
+		req.AddCookie(cookie)
+	}
+	resp = httptest.NewRecorder()
+	testServer.Config.Handler.ServeHTTP(resp, req)
+	if resp.Code != http.StatusFound && !strings.HasSuffix(resp.Header().Get("Location"), "/login") {
+		t.Errorf("expected redirect to /login after logout, got %d and %s", resp.Code, resp.Header().Get("Location"))
+	}
+
+	session, _ := database.GetSession(db, cookies["session"].Value)
+	if session != nil {
+		t.Errorf("expected session to be deleted, got session")
+	}
+}
+
+func TestRefreshUpdatesExpiration(t *testing.T) {
+	db, context, oauthServer, testServer, cleanup := setup()
+	defer cleanup()
+
+	context.Args.OauthConfig, context.Args.OauthUserInfoURI = GetOauthConfig(oauthServer.URL, testServer.URL)
+
+	cookies := make(map[string]*http.Cookie)
+	cookies, _ = FollowAuthentication(oauthServer, testServer, cookies, "/protected-path")
+
+	session, _ := database.GetSession(db, cookies["session"].Value)
+
+	req := httptest.NewRequest("GET", "/me", nil)
+	for _, cookie := range cookies {
+		req.AddCookie(cookie)
+	}
+	resp := httptest.NewRecorder()
+	testServer.Config.Handler.ServeHTTP(resp, req)
+
+	updatedSession, _ := database.GetSession(db, cookies["session"].Value)
+
+	if session.ExpireAt.After(updatedSession.ExpireAt) || session.ExpireAt.Equal(updatedSession.ExpireAt) {
+		t.Errorf("expected session expiration to be updated, got %s and %s", session.ExpireAt, updatedSession.ExpireAt)
+	}
+}
+
+func TestVerifySessionEnsuresNonExpired(t *testing.T) {
+	db, context, oauthServer, testServer, cleanup := setup()
+	defer cleanup()
+
+	context.Args.OauthConfig, context.Args.OauthUserInfoURI = GetOauthConfig(oauthServer.URL, testServer.URL)
+
+	cookies := make(map[string]*http.Cookie)
+	cookies, _ = FollowAuthentication(oauthServer, testServer, cookies, "/protected-path")
+
+	session, _ := database.GetSession(db, cookies["session"].Value)
+	session.ExpireAt = time.Now().Add(-time.Hour)
+	database.SaveSession(db, session)
+
+	req := httptest.NewRequest("GET", "/me", nil)
+	for _, cookie := range cookies {
+		req.AddCookie(cookie)
+	}
+	resp := httptest.NewRecorder()
+	testServer.Config.Handler.ServeHTTP(resp, req)
+
+	if resp.Code != http.StatusFound && !strings.HasSuffix(resp.Header().Get("Location"), "/login") {
+		t.Errorf("expected redirect to /login after session expiration, got %d and %s", resp.Code, resp.Header().Get("Location"))
+	}
+}