API: send Login actions (#27249)

* API: first version to send events about login actions

* API: improve login actions events

* Login: update auth test with new behavior

* Login: update auth test for auth module

* Login OAuth: improve functions structure

* API: make struct public to use for saml

* API: add send login log tests for grafana and ldap login

* API: remove log from tests

* Login API: fix test linting

* Update pkg/api/login_oauth.go

Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>

* Login API: refactor using defer

Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>

pkg/api/login.go

@@ -3,6 +3,8 @@ package api
 import (
 	"encoding/hex"
 	"errors"
+	"fmt"
+	"net/http"
 	"net/url"
 	"strings"
 
@@ -159,8 +161,27 @@ func (hs *HTTPServer) LoginAPIPing(c *models.ReqContext) Response {
 }
 
 func (hs *HTTPServer) LoginPost(c *models.ReqContext, cmd dtos.LoginCommand) Response {
+	action := "login"
+	var user *models.User
+	var response *NormalResponse
+
+	defer func() {
+		err := response.err
+		if err == nil && response.errMessage != "" {
+			err = errors.New(response.errMessage)
+		}
+		hs.SendLoginLog(&models.SendLoginLogCommand{
+			ReqContext: c,
+			LogAction:  action,
+			User:       user,
+			HTTPStatus: response.status,
+			Error:      err,
+		})
+	}()
+
 	if setting.DisableLoginForm {
-		return Error(401, "Login is disabled", nil)
+		response = Error(http.StatusUnauthorized, "Login is disabled", nil)
+		return response
 	}
 
 	authQuery := &models.LoginUserQuery{
@@ -170,27 +191,33 @@ func (hs *HTTPServer) LoginPost(c *models.ReqContext, cmd dtos.LoginCommand) Res
 		IpAddress:  c.Req.RemoteAddr,
 	}
 
-	if err := bus.Dispatch(authQuery); err != nil {
-		e401 := Error(401, "Invalid username or password", err)
-		if err == login.ErrInvalidCredentials || err == login.ErrTooManyLoginAttempts {
-			return e401
+	err := bus.Dispatch(authQuery)
+	if authQuery.AuthModule != "" {
+		action += fmt.Sprintf("-%s", authQuery.AuthModule)
+	}
+	if err != nil {
+		response = Error(401, "Invalid username or password", err)
+		if err == login.ErrInvalidCredentials || err == login.ErrTooManyLoginAttempts || err == models.ErrUserNotFound {
+			return response
 		}
 
 		// Do not expose disabled status,
 		// just show incorrect user credentials error (see #17947)
 		if err == login.ErrUserDisabled {
 			hs.log.Warn("User is disabled", "user", cmd.User)
-			return e401
+			return response
 		}
 
-		return Error(500, "Error while trying to authenticate user", err)
+		response = Error(500, "Error while trying to authenticate user", err)
+		return response
 	}
 
-	user := authQuery.User
+	user = authQuery.User
 
-	err := hs.loginUserWithUser(user, c)
+	err = hs.loginUserWithUser(user, c)
 	if err != nil {
-		return Error(500, "Error while signing in user", err)
+		response = Error(http.StatusInternalServerError, "Error while signing in user", err)
+		return response
 	}
 
 	result := map[string]interface{}{
@@ -207,7 +234,8 @@ func (hs *HTTPServer) LoginPost(c *models.ReqContext, cmd dtos.LoginCommand) Res
 	}
 
 	metrics.MApiLoginPost.Inc()
-	return JSON(200, result)
+	response = JSON(http.StatusOK, result)
+	return response
 }
 
 func (hs *HTTPServer) loginUserWithUser(user *models.User, c *models.ReqContext) error {
@@ -283,3 +311,11 @@ func (hs *HTTPServer) RedirectResponseWithError(ctx *models.ReqContext, err erro
 
 	return Redirect(setting.AppSubUrl + "/login")
 }
+
+func (hs *HTTPServer) SendLoginLog(cmd *models.SendLoginLogCommand) {
+	if err := bus.Dispatch(cmd); err != nil {
+		if err != bus.ErrHandlerNotFound {
+			hs.log.Warn("Error while sending login log", "err", err)
+		}
+	}
+}

pkg/api/login_oauth.go

@@ -8,6 +8,7 @@ import (
 	"crypto/x509"
 	"encoding/base64"
 	"encoding/hex"
+	"errors"
 	"fmt"
 	"io/ioutil"
 	"net/http"
@@ -40,15 +41,25 @@ func GenStateString() (string, error) {
 }
 
 func (hs *HTTPServer) OAuthLogin(ctx *models.ReqContext) {
+	loginInfo := LoginInformation{
+		Action: "login-oauth",
+	}
 	if setting.OAuthService == nil {
-		ctx.Handle(404, "OAuth not enabled", nil)
+		hs.handleOAuthLoginError(ctx, loginInfo, LoginError{
+			HttpStatus:    http.StatusNotFound,
+			PublicMessage: "OAuth not enabled",
+		})
 		return
 	}
 
 	name := ctx.Params(":name")
+	loginInfo.Action += fmt.Sprintf("-%s", name)
 	connect, ok := social.SocialMap[name]
 	if !ok {
-		ctx.Handle(404, fmt.Sprintf("No OAuth with name %s configured", name), nil)
+		hs.handleOAuthLoginError(ctx, loginInfo, LoginError{
+			HttpStatus:    http.StatusNotFound,
+			PublicMessage: fmt.Sprintf("No OAuth with name %s configured", name),
+		})
 		return
 	}
 
@@ -56,7 +67,7 @@ func (hs *HTTPServer) OAuthLogin(ctx *models.ReqContext) {
 	if errorParam != "" {
 		errorDesc := ctx.Query("error_description")
 		oauthLogger.Error("failed to login ", "error", errorParam, "errorDesc", errorDesc)
-		hs.redirectWithError(ctx, login.ErrProviderDeniedRequest, "error", errorParam, "errorDesc", errorDesc)
+		hs.handleOAuthLoginErrorWithRedirect(ctx, loginInfo, login.ErrProviderDeniedRequest, "error", errorParam, "errorDesc", errorDesc)
 		return
 	}
 
@@ -65,7 +76,10 @@ func (hs *HTTPServer) OAuthLogin(ctx *models.ReqContext) {
 		state, err := GenStateString()
 		if err != nil {
 			ctx.Logger.Error("Generating state string failed", "err", err)
-			ctx.Handle(500, "An internal error occurred", nil)
+			hs.handleOAuthLoginError(ctx, loginInfo, LoginError{
+				HttpStatus:    http.StatusInternalServerError,
+				PublicMessage: "An internal error occurred",
+			})
 			return
 		}
 
@@ -85,14 +99,20 @@ func (hs *HTTPServer) OAuthLogin(ctx *models.ReqContext) {
 	middleware.DeleteCookie(ctx.Resp, OauthStateCookieName, hs.CookieOptionsFromCfg)
 
 	if cookieState == "" {
-		ctx.Handle(500, "login.OAuthLogin(missing saved state)", nil)
+		hs.handleOAuthLoginError(ctx, loginInfo, LoginError{
+			HttpStatus:    http.StatusInternalServerError,
+			PublicMessage: "login.OAuthLogin(missing saved state)",
+		})
 		return
 	}
 
 	queryState := hashStatecode(ctx.Query("state"), setting.OAuthService.OAuthInfos[name].ClientSecret)
 	oauthLogger.Info("state check", "queryState", queryState, "cookieState", cookieState)
 	if cookieState != queryState {
-		ctx.Handle(500, "login.OAuthLogin(state mismatch)", nil)
+		hs.handleOAuthLoginError(ctx, loginInfo, LoginError{
+			HttpStatus:    http.StatusInternalServerError,
+			PublicMessage: "login.OAuthLogin(state mismatch)",
+		})
 		return
 	}
 
@@ -111,7 +131,10 @@ func (hs *HTTPServer) OAuthLogin(ctx *models.ReqContext) {
 		cert, err := tls.LoadX509KeyPair(setting.OAuthService.OAuthInfos[name].TlsClientCert, setting.OAuthService.OAuthInfos[name].TlsClientKey)
 		if err != nil {
 			ctx.Logger.Error("Failed to setup TlsClientCert", "oauth", name, "error", err)
-			ctx.Handle(500, "login.OAuthLogin(Failed to setup TlsClientCert)", nil)
+			hs.handleOAuthLoginError(ctx, loginInfo, LoginError{
+				HttpStatus:    http.StatusInternalServerError,
+				PublicMessage: "login.OAuthLogin(Failed to setup TlsClientCert)",
+			})
 			return
 		}
 
@@ -122,7 +145,10 @@ func (hs *HTTPServer) OAuthLogin(ctx *models.ReqContext) {
 		caCert, err := ioutil.ReadFile(setting.OAuthService.OAuthInfos[name].TlsClientCa)
 		if err != nil {
 			ctx.Logger.Error("Failed to setup TlsClientCa", "oauth", name, "error", err)
-			ctx.Handle(500, "login.OAuthLogin(Failed to setup TlsClientCa)", nil)
+			hs.handleOAuthLoginError(ctx, loginInfo, LoginError{
+				HttpStatus:    http.StatusInternalServerError,
+				PublicMessage: "login.OAuthLogin(Failed to setup TlsClientCa)",
+			})
 			return
 		}
 
@@ -137,7 +163,11 @@ func (hs *HTTPServer) OAuthLogin(ctx *models.ReqContext) {
 	// get token from provider
 	token, err := connect.Exchange(oauthCtx, code)
 	if err != nil {
-		ctx.Handle(500, "login.OAuthLogin(NewTransportWithCode)", err)
+		hs.handleOAuthLoginError(ctx, loginInfo, LoginError{
+			HttpStatus:    http.StatusInternalServerError,
+			PublicMessage: "login.OAuthLogin(NewTransportWithCode)",
+			Err:           err,
+		})
 		return
 	}
 	// token.TokenType was defaulting to "bearer", which is out of spec, so we explicitly set to "Bearer"
@@ -152,9 +182,13 @@ func (hs *HTTPServer) OAuthLogin(ctx *models.ReqContext) {
 	userInfo, err := connect.UserInfo(client, token)
 	if err != nil {
 		if sErr, ok := err.(*social.Error); ok {
-			hs.redirectWithError(ctx, sErr)
+			hs.handleOAuthLoginErrorWithRedirect(ctx, loginInfo, sErr)
 		} else {
-			ctx.Handle(500, fmt.Sprintf("login.OAuthLogin(get info from %s)", name), err)
+			hs.handleOAuthLoginError(ctx, loginInfo, LoginError{
+				HttpStatus:    http.StatusInternalServerError,
+				PublicMessage: fmt.Sprintf("login.OAuthLogin(get info from %s)", name),
+				Err:           err,
+			})
 		}
 		return
 	}
@@ -163,28 +197,36 @@ func (hs *HTTPServer) OAuthLogin(ctx *models.ReqContext) {
 
 	// validate that we got at least an email address
 	if userInfo.Email == "" {
-		hs.redirectWithError(ctx, login.ErrNoEmail)
+		hs.handleOAuthLoginErrorWithRedirect(ctx, loginInfo, login.ErrNoEmail)
 		return
 	}
 
 	// validate that the email is allowed to login to grafana
 	if !connect.IsEmailAllowed(userInfo.Email) {
-		hs.redirectWithError(ctx, login.ErrEmailNotAllowed)
+		hs.handleOAuthLoginErrorWithRedirect(ctx, loginInfo, login.ErrEmailNotAllowed)
 		return
 	}
 
-	user, err := syncUser(ctx, token, userInfo, name, connect)
+	loginInfo.ExtUserInfo = buildExternalUserInfo(token, userInfo, name)
+	loginInfo.User, err = syncUser(ctx, loginInfo.ExtUserInfo, connect)
 	if err != nil {
-		hs.redirectWithError(ctx, err)
+		hs.handleOAuthLoginErrorWithRedirect(ctx, loginInfo, err)
 		return
 	}
 
 	// login
-	if err := hs.loginUserWithUser(user, ctx); err != nil {
-		hs.redirectWithError(ctx, err)
+	if err := hs.loginUserWithUser(loginInfo.User, ctx); err != nil {
+		hs.handleOAuthLoginErrorWithRedirect(ctx, loginInfo, err)
 		return
 	}
 
+	hs.SendLoginLog(&models.SendLoginLogCommand{
+		ReqContext:   ctx,
+		LogAction:    loginInfo.Action,
+		User:         loginInfo.User,
+		ExternalUser: loginInfo.ExtUserInfo,
+		HTTPStatus:   http.StatusOK,
+	})
 	metrics.MApiLoginOAuth.Inc()
 
 	if redirectTo, err := url.QueryUnescape(ctx.GetCookie("redirect_to")); err == nil && len(redirectTo) > 0 {
@@ -199,10 +241,10 @@ func (hs *HTTPServer) OAuthLogin(ctx *models.ReqContext) {
 	ctx.Redirect(setting.AppSubUrl + "/")
 }
 
-// syncUser syncs a Grafana user profile with the corresponding OAuth profile.
-func syncUser(ctx *models.ReqContext, token *oauth2.Token, userInfo *social.BasicUserInfo, name string,
-	connect social.SocialConnector) (*models.User, error) {
-	oauthLogger.Debug("Syncing Grafana user with corresponding OAuth profile")
+// buildExternalUserInfo returns a ExternalUserInfo struct from OAuth user profile
+func buildExternalUserInfo(token *oauth2.Token, userInfo *social.BasicUserInfo, name string) *models.ExternalUserInfo {
+	oauthLogger.Debug("Building external user info from OAuth user info")
+
 	extUser := &models.ExternalUserInfo{
 		AuthModule: fmt.Sprintf("oauth_%s", name),
 		OAuthToken: token,
@@ -232,6 +274,16 @@ func syncUser(ctx *models.ReqContext, token *oauth2.Token, userInfo *social.Basi
 		}
 	}
 
+	return extUser
+}
+
+// syncUser syncs a Grafana user profile with the corresponding OAuth profile.
+func syncUser(
+	ctx *models.ReqContext,
+	extUser *models.ExternalUserInfo,
+	connect social.SocialConnector,
+) (*models.User, error) {
+	oauthLogger.Debug("Syncing Grafana user with corresponding OAuth profile")
 	// add/update user in Grafana
 	cmd := &models.UpsertUserCommand{
 		ReqContext:    ctx,
@@ -256,3 +308,43 @@ func hashStatecode(code, seed string) string {
 	hashBytes := sha256.Sum256([]byte(code + setting.SecretKey + seed))
 	return hex.EncodeToString(hashBytes[:])
 }
+
+type LoginError struct {
+	HttpStatus    int
+	PublicMessage string
+	Err           error
+}
+
+type LoginInformation struct {
+	Action      string
+	User        *models.User
+	ExtUserInfo *models.ExternalUserInfo
+}
+
+func (hs *HTTPServer) handleOAuthLoginError(ctx *models.ReqContext, info LoginInformation, err LoginError) {
+	ctx.Handle(err.HttpStatus, err.PublicMessage, err.Err)
+
+	logErr := err.Err
+	if logErr == nil {
+		logErr = errors.New(err.PublicMessage)
+	}
+
+	hs.SendLoginLog(&models.SendLoginLogCommand{
+		ReqContext: ctx,
+		LogAction:  info.Action,
+		HTTPStatus: err.HttpStatus,
+		Error:      logErr,
+	})
+}
+
+func (hs *HTTPServer) handleOAuthLoginErrorWithRedirect(ctx *models.ReqContext, info LoginInformation, err error, v ...interface{}) {
+	hs.redirectWithError(ctx, err, v...)
+
+	hs.SendLoginLog(&models.SendLoginLogCommand{
+		ReqContext:   ctx,
+		LogAction:    info.Action,
+		User:         info.User,
+		ExternalUser: info.ExtUserInfo,
+		Error:        err,
+	})
+}

pkg/api/login_test.go

 package api
 
 import (
+	"context"
 	"encoding/hex"
 	"errors"
 	"fmt"
@@ -21,6 +22,7 @@ import (
 	"github.com/grafana/grafana/pkg/setting"
 	"github.com/grafana/grafana/pkg/util"
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func mockSetIndexViewData() {
@@ -553,3 +555,110 @@ func setupAuthProxyLoginTest(enableLoginToken bool) *scenarioContext {
 
 	return sc
 }
+
+type loginLogTestReceiver struct {
+	cmd *models.SendLoginLogCommand
+}
+
+func (r *loginLogTestReceiver) SaveLoginLog(ctx context.Context, cmd *models.SendLoginLogCommand) error {
+	r.cmd = cmd
+	return nil
+}
+
+func TestLoginPostSendLoginLog(t *testing.T) {
+	sc := setupScenarioContext("/login")
+	hs := &HTTPServer{
+		log:              log.New("test"),
+		Cfg:              setting.NewCfg(),
+		License:          &licensing.OSSLicensingService{},
+		AuthTokenService: auth.NewFakeUserAuthTokenService(),
+	}
+
+	sc.defaultHandler = Wrap(func(w http.ResponseWriter, c *models.ReqContext) Response {
+		cmd := dtos.LoginCommand{
+			User:     "admin",
+			Password: "admin",
+		}
+		return hs.LoginPost(c, cmd)
+	})
+
+	testReceiver := loginLogTestReceiver{}
+	bus.AddHandlerCtx("login-log-receiver", testReceiver.SaveLoginLog)
+
+	type sendLoginLogCase struct {
+		desc       string
+		authUser   *models.User
+		authModule string
+		authErr    error
+		cmd        models.SendLoginLogCommand
+	}
+
+	testUser := &models.User{
+		Id:    42,
+		Email: "",
+	}
+
+	testCases := []sendLoginLogCase{
+		{
+			desc:    "invalid credentials",
+			authErr: login.ErrInvalidCredentials,
+			cmd: models.SendLoginLogCommand{
+				LogAction:  "login",
+				HTTPStatus: 401,
+				Error:      login.ErrInvalidCredentials,
+			},
+		},
+		{
+			desc:    "user disabled",
+			authErr: login.ErrUserDisabled,
+			cmd: models.SendLoginLogCommand{
+				LogAction:  "login",
+				HTTPStatus: 401,
+				Error:      login.ErrUserDisabled,
+			},
+		},
+		{
+			desc:       "valid Grafana user",
+			authUser:   testUser,
+			authModule: "grafana",
+			cmd: models.SendLoginLogCommand{
+				LogAction:  "login-grafana",
+				User:       testUser,
+				HTTPStatus: 200,
+			},
+		},
+		{
+			desc:       "valid LDAP user",
+			authUser:   testUser,
+			authModule: "ldap",
+			cmd: models.SendLoginLogCommand{
+				LogAction:  "login-ldap",
+				User:       testUser,
+				HTTPStatus: 200,
+			},
+		},
+	}
+
+	for _, c := range testCases {
+		t.Run(c.desc, func(t *testing.T) {
+			bus.AddHandler("grafana-auth", func(query *models.LoginUserQuery) error {
+				query.User = c.authUser
+				query.AuthModule = c.authModule
+				return c.authErr
+			})
+
+			sc.m.Post(sc.url, sc.defaultHandler)
+			sc.fakeReqNoAssertions("POST", sc.url).exec()
+
+			cmd := testReceiver.cmd
+			assert.Equal(t, c.cmd.LogAction, cmd.LogAction)
+			assert.Equal(t, c.cmd.HTTPStatus, cmd.HTTPStatus)
+			assert.Equal(t, c.cmd.Error, cmd.Error)
+
+			if c.cmd.User != nil {
+				require.NotEmpty(t, cmd.User)
+				assert.Equal(t, c.cmd.User.Id, cmd.User.Id)
+			}
+		})
+	}
+}

pkg/login/auth.go

@@ -41,11 +41,13 @@ func AuthenticateUser(query *models.LoginUserQuery) error {
 
 	err := loginUsingGrafanaDB(query)
 	if err == nil || (err != models.ErrUserNotFound && err != ErrInvalidCredentials && err != ErrUserDisabled) {
+		query.AuthModule = "grafana"
 		return err
 	}
 
 	ldapEnabled, ldapErr := loginUsingLDAP(query)
 	if ldapEnabled {
+		query.AuthModule = models.AuthModuleLDAP
 		if ldapErr == nil || ldapErr != ldap.ErrInvalidCredentials {
 			return ldapErr
 		}
@@ -63,10 +65,6 @@ func AuthenticateUser(query *models.LoginUserQuery) error {
 		return ErrInvalidCredentials
 	}
 
-	if err == models.ErrUserNotFound {
-		return ErrInvalidCredentials
-	}
-
 	return err
 }
 

pkg/login/auth_test.go

@@ -27,6 +27,7 @@ func TestAuthenticateUser(t *testing.T) {
 				So(sc.grafanaLoginWasCalled, ShouldBeFalse)
 				So(sc.ldapLoginWasCalled, ShouldBeFalse)
 				So(err, ShouldEqual, ErrPasswordEmpty)
+				So(sc.loginUserQuery.AuthModule, ShouldEqual, "")
 			})
 		})
 
@@ -44,6 +45,7 @@ func TestAuthenticateUser(t *testing.T) {
 				So(sc.grafanaLoginWasCalled, ShouldBeFalse)
 				So(sc.ldapLoginWasCalled, ShouldBeFalse)
 				So(sc.saveInvalidLoginAttemptWasCalled, ShouldBeFalse)
+				So(sc.loginUserQuery.AuthModule, ShouldEqual, "")
 			})
 		})
 
@@ -61,6 +63,7 @@ func TestAuthenticateUser(t *testing.T) {
 				So(sc.grafanaLoginWasCalled, ShouldBeTrue)
 				So(sc.ldapLoginWasCalled, ShouldBeFalse)
 				So(sc.saveInvalidLoginAttemptWasCalled, ShouldBeFalse)
+				So(sc.loginUserQuery.AuthModule, ShouldEqual, "grafana")
 			})
 		})
 
@@ -79,6 +82,7 @@ func TestAuthenticateUser(t *testing.T) {
 				So(sc.grafanaLoginWasCalled, ShouldBeTrue)
 				So(sc.ldapLoginWasCalled, ShouldBeFalse)
 				So(sc.saveInvalidLoginAttemptWasCalled, ShouldBeFalse)
+				So(sc.loginUserQuery.AuthModule, ShouldEqual, "grafana")
 			})
 		})
 
@@ -91,11 +95,12 @@ func TestAuthenticateUser(t *testing.T) {
 			err := AuthenticateUser(sc.loginUserQuery)
 
 			Convey("it should result in", func() {
-				So(err, ShouldEqual, ErrInvalidCredentials)
+				So(err, ShouldEqual, models.ErrUserNotFound)
 				So(sc.loginAttemptValidationWasCalled, ShouldBeTrue)
 				So(sc.grafanaLoginWasCalled, ShouldBeTrue)
 				So(sc.ldapLoginWasCalled, ShouldBeTrue)
 				So(sc.saveInvalidLoginAttemptWasCalled, ShouldBeFalse)
+				So(sc.loginUserQuery.AuthModule, ShouldEqual, "")
 			})
 		})
 
@@ -113,6 +118,7 @@ func TestAuthenticateUser(t *testing.T) {
 				So(sc.grafanaLoginWasCalled, ShouldBeTrue)
 				So(sc.ldapLoginWasCalled, ShouldBeTrue)
 				So(sc.saveInvalidLoginAttemptWasCalled, ShouldBeTrue)
+				So(sc.loginUserQuery.AuthModule, ShouldEqual, "ldap")
 			})
 		})
 
@@ -130,6 +136,7 @@ func TestAuthenticateUser(t *testing.T) {
 				So(sc.grafanaLoginWasCalled, ShouldBeTrue)
 				So(sc.ldapLoginWasCalled, ShouldBeTrue)
 				So(sc.saveInvalidLoginAttemptWasCalled, ShouldBeFalse)
+				So(sc.loginUserQuery.AuthModule, ShouldEqual, "ldap")
 			})
 		})
 
@@ -148,6 +155,7 @@ func TestAuthenticateUser(t *testing.T) {
 				So(sc.grafanaLoginWasCalled, ShouldBeTrue)
 				So(sc.ldapLoginWasCalled, ShouldBeTrue)
 				So(sc.saveInvalidLoginAttemptWasCalled, ShouldBeFalse)
+				So(sc.loginUserQuery.AuthModule, ShouldEqual, "ldap")
 			})
 		})
 

pkg/middleware/middleware.go

@@ -14,6 +14,7 @@ import (
 	"github.com/grafana/grafana/pkg/components/apikeygen"
 	"github.com/grafana/grafana/pkg/infra/log"
 	"github.com/grafana/grafana/pkg/infra/remotecache"
+	"github.com/grafana/grafana/pkg/login"
 	"github.com/grafana/grafana/pkg/models"
 	"github.com/grafana/grafana/pkg/services/rendering"
 	"github.com/grafana/grafana/pkg/setting"
@@ -178,8 +179,12 @@ func initContextWithBasicAuth(ctx *models.ReqContext, orgId int64) bool {
 		ctx.Logger.Debug(
 			"Failed to authorize the user",
 			"username", username,
+			"err", err,
 		)
 
+		if err == models.ErrUserNotFound {
+			err = login.ErrInvalidCredentials
+		}
 		ctx.JsonApiErr(401, errStringInvalidUsernamePassword, err)
 		return true
 	}

pkg/models/user_auth.go

@@ -65,6 +65,15 @@ type DeleteAuthInfoCommand struct {
 	UserAuth *UserAuth
 }
 
+type SendLoginLogCommand struct {
+	ReqContext   *ReqContext
+	LogAction    string
+	User         *User
+	ExternalUser *ExternalUserInfo
+	HTTPStatus   int
+	Error        error
+}
+
 // ----------------------
 // QUERIES
 
@@ -74,6 +83,7 @@ type LoginUserQuery struct {
 	Password   string
 	User       *User
 	IpAddress  string
+	AuthModule string
 }
 
 type GetUserByAuthInfoQuery struct {