[gtk-vnc] Replace 'auth_failure' and 'auth_unsupported' operations with signals

[Daniel P. Berrange <dberrange src gnome org>]

commit 61de39bf7570ae8c99c1424931ace8b6480951d9
Author: Daniel P. Berrange <berrange redhat com>
Date:   Fri Nov 20 17:59:02 2009 +0000

    Replace 'auth_failure' and 'auth_unsupported' operations with signals
    
    Remove the 'auth_failure' and 'auth_unsupported' operation callbacks
    from VncConnection. Introduce new 'vnc-auth-failure' and
    'vnc-auth-unsupported' signals.

 src/vncconnection.c |   77 +++++++++++++++++++++++++++++++++++++++++++--------
 src/vncconnection.h |    4 +-
 src/vncdisplay.c    |   40 ++++++++------------------
 3 files changed, 79 insertions(+), 42 deletions(-)
---
diff --git a/src/vncconnection.c b/src/vncconnection.c
index 848c282..ca8b9d0 100644
--- a/src/vncconnection.c
+++ b/src/vncconnection.c
@@ -196,11 +196,15 @@ enum {
 	VNC_DESKTOP_RESIZE,
 	VNC_PIXEL_FORMAT_CHANGED,
 
+	VNC_AUTH_FAILURE,
+	VNC_AUTH_UNSUPPORTED,
+
 	VNC_LAST_SIGNAL,
 };
 
 static guint signals[VNC_LAST_SIGNAL] = { 0, 0, 0, 0,
-					  0, 0, 0, };
+					  0, 0, 0, 0,
+					  0, };
 
 #define nibhi(a) (((a) >> 4) & 0x0F)
 #define niblo(a) ((a) & 0x0F)
@@ -384,6 +388,8 @@ struct signal_data
 			int height;
 		} size;
 		VncPixelFormat *pixelFormat;
+		const char *authReason;
+		unsigned int authUnsupported;
 	} params;
 };
 
@@ -443,6 +449,21 @@ static gboolean do_vnc_connection_emit_main_context(gpointer opaque)
 			      0,
 			      data->params.pixelFormat);
 		break;
+
+	case VNC_AUTH_FAILURE:
+		g_signal_emit(G_OBJECT(data->conn),
+			      signals[data->signum],
+			      0,
+			      data->params.authReason);
+		break;
+
+	case VNC_AUTH_UNSUPPORTED:
+		g_signal_emit(G_OBJECT(data->conn),
+			      signals[data->signum],
+			      0,
+			      data->params.authUnsupported);
+		break;
+
 	}
 
 	coroutine_yieldto(data->caller, NULL);
@@ -2689,12 +2710,18 @@ static gboolean vnc_connection_check_auth_result(VncConnection *conn)
 		vnc_connection_read(conn, reason, len);
 		reason[len] = '\0';
 		GVNC_DEBUG("Fail %s", reason);
-		if (!priv->has_error && priv->ops.auth_failure)
-			priv->ops.auth_failure(priv->ops_data, reason);
+		if (!priv->has_error) {
+			struct signal_data sigdata;
+			sigdata.params.authReason = reason;
+			vnc_connection_emit_main_context(conn, VNC_AUTH_FAILURE, &sigdata);
+		}
 	} else {
 		GVNC_DEBUG("Fail auth no result");
-		if (!priv->has_error && priv->ops.auth_failure)
-			priv->ops.auth_failure(priv->ops_data, NULL);
+		if (!priv->has_error) {
+			struct signal_data sigdata;
+			sigdata.params.authReason = "Unknown authentication failure";
+			vnc_connection_emit_main_context(conn, VNC_AUTH_FAILURE, &sigdata);
+		}
 	}
 	return FALSE;
 }
@@ -3684,10 +3711,12 @@ static gboolean vnc_connection_perform_auth(VncConnection *conn)
 		return vnc_connection_perform_auth_mslogon(conn);
 
 	default:
-		if (priv->ops.auth_unsupported)
-			priv->ops.auth_unsupported (priv->ops_data, priv->auth_type);
-		priv->has_error = TRUE;
-
+		{
+			struct signal_data sigdata;
+			sigdata.params.authUnsupported = priv->auth_type;
+			vnc_connection_emit_main_context(conn, VNC_AUTH_UNSUPPORTED, &sigdata);
+			priv->has_error = TRUE;
+		}
 		return FALSE;
 	}
 
@@ -3811,6 +3840,30 @@ static void vnc_connection_class_init(VncConnectionClass *klass)
 			      1,
 			      G_TYPE_POINTER);
 
+	signals[VNC_AUTH_FAILURE] =
+		g_signal_new ("vnc-auth-failure",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_RUN_FIRST,
+			      G_STRUCT_OFFSET (VncConnectionClass, vnc_auth_failure),
+			      NULL, NULL,
+			      g_cclosure_marshal_VOID__STRING,
+			      G_TYPE_NONE,
+			      1,
+			      G_TYPE_STRING);
+
+
+	signals[VNC_AUTH_UNSUPPORTED] =
+		g_signal_new ("vnc-auth-unsupported",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_RUN_FIRST,
+			      G_STRUCT_OFFSET (VncConnectionClass, vnc_auth_unsupported),
+			      NULL, NULL,
+			      g_cclosure_marshal_VOID__UINT,
+			      G_TYPE_NONE,
+			      1,
+			      G_TYPE_UINT);
+
+
 	g_type_class_add_private(klass, sizeof(VncConnectionPrivate));
 }
 
@@ -4209,10 +4262,10 @@ gboolean vnc_connection_set_auth_type(VncConnection *conn, unsigned int type)
             type != GVNC_AUTH_TLS &&
             type != GVNC_AUTH_VENCRYPT &&
             type != GVNC_AUTH_SASL) {
+		struct signal_data sigdata;
 		GVNC_DEBUG("Unsupported auth type %u", type);
-            	if (priv->ops.auth_unsupported)
-			priv->ops.auth_unsupported (priv->ops_data, type);
-
+		sigdata.params.authUnsupported = type;
+		vnc_connection_emit_main_context(conn, VNC_AUTH_UNSUPPORTED, &sigdata);
                 priv->has_error = TRUE;
                 return !vnc_connection_has_error(conn);
         }
diff --git a/src/vncconnection.h b/src/vncconnection.h
index b1505bb..c1f7711 100644
--- a/src/vncconnection.h
+++ b/src/vncconnection.h
@@ -59,6 +59,8 @@ struct _VncConnectionClass
 	void (*vnc_framebuffer_update)(VncConnection *conn, guint16 x, guint16 y, guint16 width, guint16 height);
 	void (*vnc_desktop_resize)(VncConnection *conn, guint16 width, guint16 height);
 	void (*vnc_pixel_format_changed)(VncConnection *conn, VncPixelFormat *format);
+	void (*vnc_auth_failure)(VncConnection *conn, const char *reason);
+	void (*vnc_auth_unsupported)(VncConnection *conn, unsigned int authType);
 };
 
 typedef void (rgb24_render_func)(void *, int, int, int, int, guint8 *, int);
@@ -68,9 +70,7 @@ struct vnc_connection_ops
 	gboolean (*auth_cred)(void *);
 	gboolean (*auth_type)(void *, unsigned int, unsigned int *);
 	gboolean (*auth_subtype)(void *, unsigned int, unsigned int *);
-	gboolean (*auth_failure)(void *, const char *);
 	gboolean (*set_color_map_entry)(void *, int, int, int, int);
-	gboolean (*auth_unsupported)(void *, unsigned int);
 	gboolean (*render_jpeg)(void *, rgb24_render_func *render, void *,
 				int, int, int, int, guint8 *, int);
 	gboolean (*get_preferred_pixel_format)(void *, VncPixelFormat *);
diff --git a/src/vncdisplay.c b/src/vncdisplay.c
index c2ca5ef..d42e6a2 100644
--- a/src/vncdisplay.c
+++ b/src/vncdisplay.c
@@ -110,8 +110,6 @@ struct signal_data
 
 	int signum;
 	GValueArray *cred_list;
-	const char *msg;
-	unsigned int auth_type;
 };
 
 G_DEFINE_TYPE(VncDisplay, vnc_display, GTK_TYPE_DRAWING_AREA)
@@ -893,18 +891,6 @@ static gboolean emit_signal_auth_cred(gpointer opaque)
 			      0,
 			      s->cred_list);
 		break;
-	case VNC_AUTH_FAILURE:
-		g_signal_emit(G_OBJECT(s->obj),
-			      signals[VNC_AUTH_FAILURE],
-			      0,
-			      s->msg);
-		break;
-	case VNC_AUTH_UNSUPPORTED:
-		g_signal_emit(G_OBJECT(s->obj),
-			      signals[VNC_AUTH_UNSUPPORTED],
-			      0,
-			      s->auth_type);
-		break;
 	case VNC_CONNECTED:
 	case VNC_INITIALIZED:
 	case VNC_DISCONNECTED:
@@ -1178,26 +1164,22 @@ static gboolean on_auth_subtype(void *opaque, unsigned int ntype, unsigned int *
 	return TRUE;
 }
 
-static gboolean on_auth_failure(void *opaque, const char *msg)
+static void on_auth_failure(VncConnection *conn G_GNUC_UNUSED,
+			    const char *reason,
+			    gpointer opaque)
 {
 	VncDisplay *obj = VNC_DISPLAY(opaque);
-	struct signal_data s;
-
-	s.msg = msg;
-	emit_signal_delayed(obj, VNC_AUTH_FAILURE, &s);
 
-	return TRUE;
+	g_signal_emit(G_OBJECT(obj), signals[VNC_AUTH_FAILURE], 0, reason);
 }
 
-static gboolean on_auth_unsupported(void *opaque, unsigned int auth_type)
+static void on_auth_unsupported(VncConnection *conn G_GNUC_UNUSED,
+				unsigned int authType,
+				gpointer opaque)
 {
 	VncDisplay *obj = VNC_DISPLAY(opaque);
-	struct signal_data s;
-
-	s.auth_type = auth_type;
-	emit_signal_delayed(obj, VNC_AUTH_UNSUPPORTED, &s);
 
-	return TRUE;
+	g_signal_emit(G_OBJECT(obj), signals[VNC_AUTH_UNSUPPORTED], 0, authType);
 }
 
 static void on_server_cut_text(void *opaque, const gchar *text)
@@ -1316,8 +1298,6 @@ static const struct vnc_connection_ops vnc_display_ops = {
 	.auth_cred = on_auth_cred,
 	.auth_type = on_auth_type,
 	.auth_subtype = on_auth_subtype,
-	.auth_failure = on_auth_failure,
-	.auth_unsupported = on_auth_unsupported,
 	.render_jpeg = on_render_jpeg,
 	.get_preferred_pixel_format = on_get_preferred_pixel_format
 };
@@ -2013,6 +1993,10 @@ static void vnc_display_init(VncDisplay *display)
 			 G_CALLBACK(on_desktop_resize), display);
 	g_signal_connect(G_OBJECT(priv->conn), "vnc-pixel-format-changed",
 			 G_CALLBACK(on_pixel_format_changed), display);
+	g_signal_connect(G_OBJECT(priv->conn), "vnc-auth-failure",
+			 G_CALLBACK(on_auth_failure), display);
+	g_signal_connect(G_OBJECT(priv->conn), "vnc-auth-unsupported",
+			 G_CALLBACK(on_auth_unsupported), display);
 }
 
 static char *