AuthN: Login (#61225)

* AuthN: Add function to login auth request

pkg/services/authn/clients/basic.go

@@ -9,6 +9,7 @@ import (
 	"github.com/grafana/grafana/pkg/services/loginattempt"
 	"github.com/grafana/grafana/pkg/util"
 	"github.com/grafana/grafana/pkg/util/errutil"
+	"github.com/grafana/grafana/pkg/web"
 )
 
 var (
@@ -54,7 +55,7 @@ func (c *Basic) Authenticate(ctx context.Context, r *authn.Request) (*authn.Iden
 			}
 			if errors.Is(err, errInvalidPassword) {
 				// only add login attempt if identity was found but the provided password was invalid
-				_ = c.loginAttempts.Add(ctx, username, r.HTTPRequest.RemoteAddr)
+				_ = c.loginAttempts.Add(ctx, username, web.RemoteAddr(r.HTTPRequest))
 			}
 			return nil, errBasicAuthCredentials.Errorf("failed to authenticate identity: %w", err)
 		}