1 files changed, 99 insertions, 0 deletions
diff --git a/api/authentication.go b/api/authentication.go
new file mode 100644
index 000000000..bab83a720
--- /dev/null
+++ b/api/authentication.go
@@ -0,0 +1,99 @@
+// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package api
+
+import (
+	"github.com/mattermost/platform/einterfaces"
+	"github.com/mattermost/platform/model"
+	"github.com/mattermost/platform/utils"
+)
+
+func checkPasswordAndAllCriteria(user *model.User, password string, mfaToken string) *model.AppError {
+	if err := checkUserPassword(user, password); err != nil {
+		return err
+	}
+
+	if err := checkUserAdditionalAuthenticationCriteria(user, mfaToken); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func checkUserPassword(user *model.User, password string) *model.AppError {
+	if !model.ComparePassword(user.Password, password) {
+		if result := <-Srv.Store.User().UpdateFailedPasswordAttempts(user.Id, user.FailedAttempts+1); result.Err != nil {
+			return result.Err
+		}
+
+		return model.NewLocAppError("checkUserPassword", "api.user.check_user_password.invalid.app_error", nil, "user_id="+user.Id)
+	} else {
+		if result := <-Srv.Store.User().UpdateFailedPasswordAttempts(user.Id, 0); result.Err != nil {
+			return result.Err
+		}
+
+		return nil
+	}
+}
+
+func checkUserAdditionalAuthenticationCriteria(user *model.User, mfaToken string) *model.AppError {
+	if err := checkUserMfa(user, mfaToken); err != nil {
+		return err
+	}
+
+	if err := checkEmailVerified(user); err != nil {
+		return err
+	}
+
+	if err := checkUserNotDisabled(user); err != nil {
+		return err
+	}
+
+	if err := checkUserLoginAttempts(user); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func checkUserMfa(user *model.User, token string) *model.AppError {
+	if !user.MfaActive || !utils.IsLicensed || !*utils.License.Features.MFA || !*utils.Cfg.ServiceSettings.EnableMultifactorAuthentication {
+		return nil
+	}
+
+	mfaInterface := einterfaces.GetMfaInterface()
+	if mfaInterface == nil {
+		return model.NewLocAppError("checkUserMfa", "api.user.check_user_mfa.not_available.app_error", nil, "")
+	}
+
+	if ok, err := mfaInterface.ValidateToken(user.MfaSecret, token); err != nil {
+		return err
+	} else if !ok {
+		return model.NewLocAppError("checkUserMfa", "api.user.check_user_mfa.bad_code.app_error", nil, "")
+	}
+
+	return nil
+}
+
+func checkUserLoginAttempts(user *model.User) *model.AppError {
+	if user.FailedAttempts >= utils.Cfg.ServiceSettings.MaximumLoginAttempts {
+		return model.NewLocAppError("checkUserLoginAttempts", "api.user.check_user_login_attempts.too_many.app_error", nil, "user_id="+user.Id)
+	}
+
+	return nil
+}
+
+func checkEmailVerified(user *model.User) *model.AppError {
+	if !user.EmailVerified && utils.Cfg.EmailSettings.RequireEmailVerification {
+		return model.NewLocAppError("Login", "api.user.login.not_verified.app_error", nil, "user_id="+user.Id)
+	}
+	return nil
+}
+
+func checkUserNotDisabled(user *model.User) *model.AppError {
+	if user.DeleteAt > 0 {
+		return model.NewLocAppError("Login", "api.user.login.inactive.app_error", nil, "user_id="+user.Id)
+	}
+	return nil
+}