Return error when authentication dialog is dismissed

This allows PolicyKit applications to disambiguate between when the
authentication dialog is dismissed versus when authentication fails
(e.g. the wrong password has been entered).

From polkit-gnome,
commit: 2511afae6b72fe3b4714d07ab6373c93c2923a5e
From: David Zeuthen <[email protected]>
Gnome bug: https://bugs.freedesktop.org/show_bug.cgi?id=30653

3 files changed, 22 insertions, 5 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index d1d8136..eb2fcfc 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -30,6 +30,7 @@ polkit_mate_authentication_agent_1_CPPFLAGS = 		\
 
 polkit_mate_authentication_agent_1_CFLAGS = 		\
 	$(GTK_CFLAGS)					\
+	$(GLIB_CFLAGS)					\
 	$(POLKIT_AGENT_CFLAGS)				\
 	$(POLKIT_GOBJECT_CFLAGS)			\
 	$(WARN_CFLAGS)					\
@@ -40,6 +41,7 @@ polkit_mate_authentication_agent_1_LDFLAGS = 		\
 
 polkit_mate_authentication_agent_1_LDADD = 		\
 	$(GTK_LIBS)					\
+	$(GLIB_LIBS)					\
 	$(POLKIT_AGENT_LIBS)				\
 	$(POLKIT_GOBJECT_LIBS)				\
 	$(INTLLIBS)
diff --git a/src/polkitmateauthenticator.c b/src/polkitmateauthenticator.c
index e5fd4c4..93440cd 100644
--- a/src/polkitmateauthenticator.c
+++ b/src/polkitmateauthenticator.c
@@ -127,6 +127,7 @@ polkit_mate_authenticator_class_init (PolkitMateAuthenticatorClass *klass)
    * PolkitMateAuthenticator::completed:
    * @authenticator: A #PolkitMateAuthenticator.
    * @gained_authorization: Whether the authorization was gained.
+   * @dismissed: Whether the dialog was dismissed.
    *
    * Emitted when the authentication is completed. The user is supposed to dispose of @authenticator
    * upon receiving this signal.
@@ -137,9 +138,10 @@ polkit_mate_authenticator_class_init (PolkitMateAuthenticatorClass *klass)
                                             0,                      /* class offset     */
                                             NULL,                   /* accumulator      */
                                             NULL,                   /* accumulator data */
-                                            g_cclosure_marshal_VOID__BOOLEAN,
+                                            g_cclosure_marshal_generic,
                                             G_TYPE_NONE,
-                                            1,
+                                            2,
+					    G_TYPE_BOOLEAN,
                                             G_TYPE_BOOLEAN);
 }
 
@@ -473,7 +475,10 @@ do_initiate (gpointer user_data)
     }
 
  out:
-  g_signal_emit_by_name (authenticator, "completed", authenticator->gained_authorization);
+  g_signal_emit_by_name (authenticator,
+                         "completed",
+                         authenticator->gained_authorization,
+                         authenticator->was_cancelled);
 
   g_object_unref (authenticator);
 
diff --git a/src/polkitmatelistener.c b/src/polkitmatelistener.c
index 1b7c486..926fccd 100644
--- a/src/polkitmatelistener.c
+++ b/src/polkitmatelistener.c
@@ -23,6 +23,7 @@
 #include "config.h"
 
 #include <string.h>
+#include <glib/gi18n.h>
 
 #include "polkitmatelistener.h"
 #include "polkitmateauthenticator.h"
@@ -153,8 +154,9 @@ maybe_initiate_next_authenticator (PolkitMateListener *listener)
 
 static void
 authenticator_completed (PolkitMateAuthenticator *authenticator,
-                         gboolean                  gained_authorization,
-                         gpointer                  user_data)
+                         gboolean                 gained_authorization,
+                         gboolean                 dismissed,
+                         gpointer                 user_data)
 {
   AuthData *data = user_data;
 
@@ -164,6 +166,14 @@ authenticator_completed (PolkitMateAuthenticator *authenticator,
 
   g_object_unref (authenticator);
 
+  if (dismissed)
+    {
+      g_simple_async_result_set_error (data->simple,
+                                       POLKIT_ERROR,
+                                       POLKIT_ERROR_CANCELLED,
+                                       _("Authentication dialog was dismissed by the user"));
+    }
+
   g_simple_async_result_complete (data->simple);
   g_object_unref (data->simple);