[gtk-vnc] Replace 'auth_type' and 'auth_subtype' operations with signals

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

commit 4395a9aeb59651f0daa868bfcf0060e2f60d8098
Author: Daniel P. Berrange <berrange redhat com>
Date:   Fri Nov 20 19:59:40 2009 +0000

    Replace 'auth_type' and 'auth_subtype' operations with signals
    
    Remove the 'auth_type' and 'auth_subtype' operation callbacks.
    Introduce new 'vnc-auth-choose-type' and 'vnc-auth-choose-subtype'
    signals

 src/vncconnection.c |   92 +++++++++++++++++++++++++++++++++++++++++++-------
 src/vncconnection.h |    4 +-
 src/vncdisplay.c    |   56 ++++++++++++++++++-------------
 src/vncmarshal.txt  |    1 +
 4 files changed, 115 insertions(+), 38 deletions(-)
---
diff --git a/src/vncconnection.c b/src/vncconnection.c
index 367912d..c10cae1 100644
--- a/src/vncconnection.c
+++ b/src/vncconnection.c
@@ -203,13 +203,15 @@ enum {
 	VNC_AUTH_FAILURE,
 	VNC_AUTH_UNSUPPORTED,
 	VNC_AUTH_CREDENTIAL,
+	VNC_AUTH_CHOOSE_TYPE,
+	VNC_AUTH_CHOOSE_SUBTYPE,
 
 	VNC_LAST_SIGNAL,
 };
 
 static guint signals[VNC_LAST_SIGNAL] = { 0, 0, 0, 0,
 					  0, 0, 0, 0,
-					  0, 0, };
+					  0, 0, 0, 0};
 
 #define nibhi(a) (((a) >> 4) & 0x0F)
 #define niblo(a) ((a) & 0x0F)
@@ -396,6 +398,7 @@ struct signal_data
 		const char *authReason;
 		unsigned int authUnsupported;
 		GValueArray *authCred;
+		GValueArray *authTypes;
 	} params;
 };
 
@@ -477,6 +480,21 @@ static gboolean do_vnc_connection_emit_main_context(gpointer opaque)
 			      data->params.authCred);
 		break;
 
+	case VNC_AUTH_CHOOSE_TYPE:
+		g_signal_emit(G_OBJECT(data->conn),
+			      signals[data->signum],
+			      0,
+			      data->params.authTypes);
+		break;
+
+	case VNC_AUTH_CHOOSE_SUBTYPE:
+		g_signal_emit(G_OBJECT(data->conn),
+			      signals[data->signum],
+			      0,
+			      data->conn->priv->auth_type,
+			      data->params.authTypes);
+		break;
+
 	}
 
 	coroutine_yieldto(data->caller, NULL);
@@ -3452,6 +3470,37 @@ static gboolean vnc_connection_has_auth_subtype(gpointer data)
 	return TRUE;
 }
 
+static void vnc_connection_choose_auth(VncConnection *conn,
+				       int signum,
+				       unsigned int ntypes,
+				       unsigned int *types)
+{
+	VncConnectionPrivate *priv = conn->priv;
+	struct signal_data sigdata;
+	GValueArray *authTypes;
+	GValue authType;
+
+	authTypes = g_value_array_new(0);
+
+	for (int i = 0 ; i < ntypes ; i++) {
+		memset(&authType, 0, sizeof(authType));
+
+		if (signum == VNC_AUTH_CHOOSE_TYPE) {
+			g_value_init(&authType, VNC_TYPE_CONNECTION_AUTH);
+		} else {
+			if (priv->auth_type == GVNC_AUTH_VENCRYPT)
+				g_value_init(&authType, VNC_TYPE_CONNECTION_AUTH_VENCRYPT);
+			else
+				g_value_init(&authType, VNC_TYPE_CONNECTION_AUTH);
+		}
+		g_value_set_enum(&authType, types[i]);
+		authTypes = g_value_array_append(authTypes, &authType);
+	}
+
+	sigdata.params.authCred = authTypes;
+	vnc_connection_emit_main_context(conn, signum, &sigdata);
+	g_value_array_free(authTypes);
+}
 
 static gboolean vnc_connection_perform_auth_tls(VncConnection *conn)
 {
@@ -3489,11 +3538,9 @@ static gboolean vnc_connection_perform_auth_tls(VncConnection *conn)
 		GVNC_DEBUG("Possible sub-auth %d", auth[i]);
 	}
 
-	if (priv->has_error || !priv->ops.auth_subtype)
+	if (priv->has_error)
 		return FALSE;
-
-	if (!priv->ops.auth_subtype(priv->ops_data, nauth, auth))
-		priv->has_error = TRUE;
+	vnc_connection_choose_auth(conn, VNC_AUTH_CHOOSE_TYPE, nauth, auth);
 	if (priv->has_error)
 		return FALSE;
 
@@ -3564,11 +3611,9 @@ static gboolean vnc_connection_perform_auth_vencrypt(VncConnection *conn)
 		GVNC_DEBUG("Possible auth %d", auth[i]);
 	}
 
-	if (priv->has_error || !priv->ops.auth_subtype)
+	if (priv->has_error)
 		return FALSE;
-
-	if (!priv->ops.auth_subtype(priv->ops_data, nauth, auth))
-		priv->has_error = TRUE;
+	vnc_connection_choose_auth(conn, VNC_AUTH_CHOOSE_SUBTYPE, nauth, auth);
 	if (priv->has_error)
 		return FALSE;
 
@@ -3682,11 +3727,9 @@ static gboolean vnc_connection_perform_auth(VncConnection *conn)
 		GVNC_DEBUG("Possible auth %u", auth[i]);
 	}
 
-	if (priv->has_error || !priv->ops.auth_type)
+	if (priv->has_error)
 		return FALSE;
-
-	if (!priv->ops.auth_type(priv->ops_data, nauth, auth))
-		priv->has_error = TRUE;
+	vnc_connection_choose_auth(conn, VNC_AUTH_CHOOSE_TYPE, nauth, auth);
 	if (priv->has_error)
 		return FALSE;
 
@@ -3892,6 +3935,29 @@ static void vnc_connection_class_init(VncConnectionClass *klass)
 			      1,
 			      G_TYPE_VALUE_ARRAY);
 
+	signals[VNC_AUTH_CHOOSE_TYPE] =
+		g_signal_new ("vnc-auth-choose-type",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_RUN_FIRST,
+			      G_STRUCT_OFFSET (VncConnectionClass, vnc_auth_choose_type),
+			      NULL, NULL,
+			      g_cclosure_marshal_VOID__BOXED,
+			      G_TYPE_NONE,
+			      1,
+			      G_TYPE_VALUE_ARRAY);
+
+	signals[VNC_AUTH_CHOOSE_SUBTYPE] =
+		g_signal_new ("vnc-auth-choose-subtype",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_RUN_FIRST,
+			      G_STRUCT_OFFSET (VncConnectionClass, vnc_auth_choose_subtype),
+			      NULL, NULL,
+			      g_cclosure_user_marshal_VOID__UINT_BOXED,
+			      G_TYPE_NONE,
+			      2,
+			      G_TYPE_UINT,
+			      G_TYPE_VALUE_ARRAY);
+
 
 	g_type_class_add_private(klass, sizeof(VncConnectionPrivate));
 }
diff --git a/src/vncconnection.h b/src/vncconnection.h
index 866d461..b5b52fc 100644
--- a/src/vncconnection.h
+++ b/src/vncconnection.h
@@ -62,14 +62,14 @@ struct _VncConnectionClass
 	void (*vnc_auth_failure)(VncConnection *conn, const char *reason);
 	void (*vnc_auth_unsupported)(VncConnection *conn, unsigned int authType);
 	void (*vnc_auth_credential)(VncConnection *conn, GValueArray *creds);
+	void (*vnc_auth_choose_type)(VncConnection *conn, GValueArray *types);
+	void (*vnc_auth_choose_subtype)(VncConnection *conn, unsigned int type, GValueArray *subtypes);
 };
 
 typedef void (rgb24_render_func)(void *, int, int, int, int, guint8 *, int);
 
 struct vnc_connection_ops
 {
-	gboolean (*auth_type)(void *, unsigned int, unsigned int *);
-	gboolean (*auth_subtype)(void *, unsigned int, unsigned int *);
 	gboolean (*set_color_map_entry)(void *, int, int, int, int);
 	gboolean (*render_jpeg)(void *, rgb24_render_func *render, void *,
 				int, int, int, int, guint8 *, int);
diff --git a/src/vncdisplay.c b/src/vncdisplay.c
index fa8ef10..f88f50b 100644
--- a/src/vncdisplay.c
+++ b/src/vncdisplay.c
@@ -1095,55 +1095,63 @@ static void on_auth_cred(VncConnection *conn G_GNUC_UNUSED,
 	g_signal_emit(G_OBJECT(obj), signals[VNC_AUTH_CREDENTIAL], 0, creds);
 }
 
-static gboolean on_auth_type(void *opaque, unsigned int ntype, unsigned int *types)
+static void on_auth_choose_type(VncConnection *conn G_GNUC_UNUSED,
+				GValueArray *types,
+				gpointer opaque)
 {
 	VncDisplay *obj = VNC_DISPLAY(opaque);
 	VncDisplayPrivate *priv = obj->priv;
 	GSList *l;
 	guint i;
 
-	if (!ntype)
-		return TRUE;
+	if (!types->n_values)
+		return;
 
 	for (l = priv->preferable_auths; l; l=l->next) {
 		int pref = GPOINTER_TO_UINT (l->data);
 
-		for (i=0; i<ntype; i++) {
-			if (pref == types[i]) {
-				vnc_connection_set_auth_type(priv->conn, types[i]);
-				return TRUE;
+		for (i=0; i< types->n_values; i++) {
+			GValue *type = g_value_array_get_nth(types, i);
+			if (pref == g_value_get_enum(type)) {
+				vnc_connection_set_auth_type(priv->conn, pref);
+				return;
 			}
 		}
 	}
 
-	vnc_connection_set_auth_type(priv->conn, types[0]);
-	return TRUE;
+	GValue *type = g_value_array_get_nth(types, 0);
+	vnc_connection_set_auth_type(priv->conn, g_value_get_enum(type));
 }
 
-static gboolean on_auth_subtype(void *opaque, unsigned int ntype, unsigned int *types)
+static void on_auth_choose_subtype(VncConnection *conn G_GNUC_UNUSED,
+				   unsigned int type,
+				   GValueArray *subtypes,
+				   gpointer opaque)
 {
 	VncDisplay *obj = VNC_DISPLAY(opaque);
 	VncDisplayPrivate *priv = obj->priv;
-
 	GSList *l;
 	guint i;
 
-	if (!ntype)
-		return TRUE;
+	if (!subtypes->n_values)
+		return;
 
-	for (l = priv->preferable_auths; l; l=l->next) {
-		int pref = GPOINTER_TO_UINT (l->data);
+	if (type == GVNC_AUTH_TLS) {
+		for (l = priv->preferable_auths; l; l=l->next) {
+			int pref = GPOINTER_TO_UINT (l->data);
 
-		for (i=0; i<ntype; i++) {
-			if (pref == types[i]) {
-				vnc_connection_set_auth_subtype(priv->conn, types[i]);
-				return TRUE;
+			for (i=0; i< subtypes->n_values; i++) {
+				GValue *subtype = g_value_array_get_nth(subtypes, i);
+				if (pref == g_value_get_enum(subtype)) {
+					vnc_connection_set_auth_type(priv->conn, pref);
+					return;
+				}
 			}
 		}
 	}
 
-	vnc_connection_set_auth_subtype(priv->conn, types[0]);
-	return TRUE;
+	GValue *subtype = g_value_array_get_nth(subtypes, 0);
+	vnc_connection_set_auth_subtype(priv->conn, g_value_get_enum(subtype));
 }
 
 static void on_auth_failure(VncConnection *conn G_GNUC_UNUSED,
@@ -1277,8 +1285,6 @@ static gboolean on_render_jpeg(void *opaque G_GNUC_UNUSED,
 }
 
 static const struct vnc_connection_ops vnc_display_ops = {
-	.auth_type = on_auth_type,
-	.auth_subtype = on_auth_subtype,
 	.render_jpeg = on_render_jpeg,
 };
 
@@ -1988,6 +1994,10 @@ static void vnc_display_init(VncDisplay *display)
 			 G_CALLBACK(on_auth_unsupported), display);
 	g_signal_connect(G_OBJECT(priv->conn), "vnc-auth-credential",
 			 G_CALLBACK(on_auth_cred), display);
+	g_signal_connect(G_OBJECT(priv->conn), "vnc-auth-choose-type",
+			 G_CALLBACK(on_auth_choose_type), display);
+	g_signal_connect(G_OBJECT(priv->conn), "vnc-auth-choose-subtype",
+			 G_CALLBACK(on_auth_choose_subtype), display);
 }
 
 gboolean vnc_display_set_credential(VncDisplay *obj, int type, const gchar *data)
diff --git a/src/vncmarshal.txt b/src/vncmarshal.txt
index fc3ca85..b60bcaf 100644
--- a/src/vncmarshal.txt
+++ b/src/vncmarshal.txt
@@ -1,2 +1,3 @@
 VOID:INT,INT
 VOID:INT,INT,INT,INT
+VOID:UINT,BOXED