mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager
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7337ab8959
There should be a comma after 'Otherwise' and 'Currently'. https://bugzilla.redhat.com/show_bug.cgi?id=1852452 https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/560
269 lines
8.9 KiB
C
269 lines
8.9 KiB
C
// SPDX-License-Identifier: LGPL-2.1+
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/*
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* Copyright (C) 2015 Red Hat, Inc.
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*/
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#include "nm-default.h"
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#include "nm-core-internal.h"
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typedef struct {
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char *signal_name;
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const GVariantType *signature;
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} NMDBusSignalData;
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static void
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dbus_signal_data_free (gpointer data, GClosure *closure)
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{
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NMDBusSignalData *sd = data;
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g_free (sd->signal_name);
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g_slice_free (NMDBusSignalData, sd);
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}
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static void
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dbus_signal_meta_marshal (GClosure *closure,
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GValue *return_value,
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guint n_param_values,
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const GValue *param_values,
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gpointer invocation_hint,
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gpointer marshal_data)
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{
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NMDBusSignalData *sd = marshal_data;
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const char *signal_name;
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GVariant *parameters, *param;
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GValue *closure_params;
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gsize n_params, i;
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g_return_if_fail (n_param_values == 4);
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signal_name = g_value_get_string (¶m_values[2]);
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parameters = g_value_get_variant (¶m_values[3]);
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if (strcmp (signal_name, sd->signal_name) != 0)
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return;
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if (sd->signature) {
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if (!g_variant_is_of_type (parameters, sd->signature)) {
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g_warning ("%p: got signal '%s' but parameters were of type '%s', not '%s'",
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g_value_get_object (¶m_values[0]),
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signal_name, g_variant_get_type_string (parameters),
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g_variant_type_peek_string (sd->signature));
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return;
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}
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n_params = g_variant_n_children (parameters) + 1;
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} else
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n_params = 1;
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closure_params = g_new0 (GValue, n_params);
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g_value_init (&closure_params[0], G_TYPE_OBJECT);
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g_value_copy (¶m_values[0], &closure_params[0]);
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for (i = 1; i < n_params; i++) {
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param = g_variant_get_child_value (parameters, i - 1);
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if ( g_variant_is_of_type (param, G_VARIANT_TYPE ("ay"))
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|| g_variant_is_of_type (param, G_VARIANT_TYPE ("aay"))) {
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/* g_dbus_gvariant_to_gvalue() thinks 'ay' means "non-UTF-8 NUL-terminated string" */
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g_value_init (&closure_params[i], G_TYPE_VARIANT);
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g_value_set_variant (&closure_params[i], param);
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} else
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g_dbus_gvariant_to_gvalue (param, &closure_params[i]);
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g_variant_unref (param);
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}
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g_cclosure_marshal_generic (closure,
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NULL,
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n_params,
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closure_params,
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invocation_hint,
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NULL);
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for (i = 0; i < n_params; i++)
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g_value_unset (&closure_params[i]);
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g_free (closure_params);
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}
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/**
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* _nm_dbus_signal_connect_data:
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* @proxy: a #GDBusProxy
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* @signal_name: the D-Bus signal to connect to
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* @signature: (allow-none): the signal's type signature (must be a tuple)
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* @c_handler: the signal handler function
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* @data: (allow-none): data to pass to @c_handler
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* @destroy_data: (allow-none): closure destroy notify for @data
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* @connect_flags: connection flags
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*
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* Connects to the D-Bus signal @signal_name on @proxy. @c_handler must be a
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* void function whose first argument is a #GDBusProxy, followed by arguments
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* for each element of @signature, ending with a #gpointer argument for @data.
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*
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* The argument types in @c_handler correspond to the types output by
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* g_dbus_gvariant_to_gvalue(), except for 'ay' and 'aay'. In particular:
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* - both 16-bit and 32-bit integers are passed as #int/#guint
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* - 'as' values are passed as #GStrv (char **)
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* - all other array, tuple, and dict types are passed as #GVariant
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*
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* If @signature is %NULL, then the signal's parameters will be ignored, and
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* @c_handler should take only the #GDBusProxy and #gpointer arguments.
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*
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* Returns: the signal handler ID, which can be used with
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* g_signal_handler_remove(). Beware that because of the way the signal is
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* connected, you will not be able to remove it with
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* g_signal_handlers_disconnect_by_func(), although
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* g_signal_handlers_disconnect_by_data() will work correctly.
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*/
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gulong
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_nm_dbus_signal_connect_data (GDBusProxy *proxy,
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const char *signal_name,
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const GVariantType *signature,
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GCallback c_handler,
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gpointer data,
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GClosureNotify destroy_data,
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GConnectFlags connect_flags)
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{
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NMDBusSignalData *sd;
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GClosure *closure;
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gboolean swapped = !!(connect_flags & G_CONNECT_SWAPPED);
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gboolean after = !!(connect_flags & G_CONNECT_AFTER);
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g_return_val_if_fail (G_IS_DBUS_PROXY (proxy), 0);
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g_return_val_if_fail (signal_name != NULL, 0);
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g_return_val_if_fail (signature == NULL || g_variant_type_is_tuple (signature), 0);
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g_return_val_if_fail (c_handler != NULL, 0);
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sd = g_slice_new (NMDBusSignalData);
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sd->signal_name = g_strdup (signal_name);
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sd->signature = signature;
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closure = (swapped ? g_cclosure_new_swap : g_cclosure_new) (c_handler, data, destroy_data);
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g_closure_set_marshal (closure, g_cclosure_marshal_generic);
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g_closure_set_meta_marshal (closure, sd, dbus_signal_meta_marshal);
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g_closure_add_finalize_notifier (closure, sd, dbus_signal_data_free);
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return g_signal_connect_closure (proxy, "g-signal", closure, after);
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}
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/**
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* _nm_dbus_signal_connect:
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* @proxy: a #GDBusProxy
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* @signal_name: the D-Bus signal to connect to
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* @signature: the signal's type signature (must be a tuple)
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* @c_handler: the signal handler function
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* @data: (allow-none): data to pass to @c_handler
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*
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* Simplified version of _nm_dbus_signal_connect_data() with fewer arguments.
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*
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* Returns: the signal handler ID, as with _nm_signal_connect_data().
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*/
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/**
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* _nm_dbus_typecheck_response:
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* @response: the #GVariant response to check.
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* @reply_type: the expected reply type. It may be %NULL to perform no
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* checking.
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* @error: (allow-none): the error in case the @reply_type does not match.
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*
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* Returns: %TRUE, if @response is of the expected @reply_type.
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*/
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gboolean
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_nm_dbus_typecheck_response (GVariant *response,
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const GVariantType *reply_type,
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GError **error)
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{
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g_return_val_if_fail (response, FALSE);
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if (!reply_type)
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return TRUE;
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if (g_variant_is_of_type (response, reply_type))
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return TRUE;
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/* This is the same error code that g_dbus_connection_call() returns if
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* @reply_type doesn't match.
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*/
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g_set_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
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_("Method returned type '%s', but expected '%s'"),
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g_variant_get_type_string (response),
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g_variant_type_peek_string (reply_type));
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return FALSE;
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}
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/**
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* _nm_dbus_proxy_call_finish:
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* @proxy: A #GDBusProxy.
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* @res: A #GAsyncResult obtained from the #GAsyncReadyCallback passed to
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* g_dbus_proxy_call().
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* @reply_type: (allow-none): the expected type of the reply, or %NULL
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* @error: Return location for error or %NULL.
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*
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* Finishes an operation started with g_dbus_proxy_call(), as with
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* g_dbus_proxy_call_finish(), except thatif @reply_type is non-%NULL, then it
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* will also check that the response matches that type signature, and return
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* an error if not.
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*
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* Returns: %NULL if @error is set. Otherwise, a #GVariant tuple with
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* return values. Free with g_variant_unref().
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*/
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GVariant *
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_nm_dbus_proxy_call_finish (GDBusProxy *proxy,
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GAsyncResult *res,
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const GVariantType *reply_type,
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GError **error)
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{
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GVariant *variant;
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variant = g_dbus_proxy_call_finish (proxy,
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res,
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error);
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if ( variant
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&& !_nm_dbus_typecheck_response (variant, reply_type, error))
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nm_clear_pointer (&variant, g_variant_unref);
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return variant;
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}
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GVariant *
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_nm_dbus_connection_call_finish (GDBusConnection *dbus_connection,
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GAsyncResult *result,
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const GVariantType *reply_type,
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GError **error)
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{
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GVariant *variant;
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variant = g_dbus_connection_call_finish (dbus_connection, result, error);
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if ( variant
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&& !_nm_dbus_typecheck_response (variant, reply_type, error))
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nm_clear_pointer (&variant, g_variant_unref);
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return variant;
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}
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/**
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* _nm_dbus_error_has_name:
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* @error: (allow-none): a #GError, or %NULL
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* @dbus_error_name: a D-Bus error name
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*
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* Checks if @error is set and corresponds to the D-Bus error @dbus_error_name.
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*
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* This should only be used for "foreign" D-Bus errors (eg, errors
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* from BlueZ or wpa_supplicant). All NetworkManager D-Bus errors
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* should be properly mapped by gdbus to one of the domains/codes in
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* nm-errors.h.
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*
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* Returns: %TRUE or %FALSE
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*/
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gboolean
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_nm_dbus_error_has_name (GError *error,
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const char *dbus_error_name)
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{
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gboolean has_name = FALSE;
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if (error && g_dbus_error_is_remote_error (error)) {
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char *error_name;
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error_name = g_dbus_error_get_remote_error (error);
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has_name = !g_strcmp0 (error_name, dbus_error_name);
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g_free (error_name);
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}
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return has_name;
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}
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