New upstream version 1.29.90 upstream/1.29.90

1 files changed, 294 insertions, 0 deletions

diff --git a/src/core/nm-dbus-utils.c b/src/core/nm-dbus-utils.c
new file mode 100644
index 00000000..5890bdf2
--- /dev/null
+++ b/src/core/nm-dbus-utils.c
@@ -0,0 +1,294 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2018 Red Hat, Inc.
+ */
+
+#include "src/core/nm-default-daemon.h"
+
+#include "nm-dbus-utils.h"
+
+#include "nm-dbus-object.h"
+
+/*****************************************************************************/
+
+const GDBusSignalInfo nm_signal_info_property_changed_legacy = NM_DEFINE_GDBUS_SIGNAL_INFO_INIT(
+    "PropertiesChanged",
+    .args = NM_DEFINE_GDBUS_ARG_INFOS(NM_DEFINE_GDBUS_ARG_INFO("properties", "a{sv}"), ), );
+
+GDBusPropertyInfo *
+nm_dbus_utils_interface_info_lookup_property(const GDBusInterfaceInfo *interface_info,
+                                             const char *              property_name,
+                                             guint *                   property_idx)
+{
+    guint i;
+
+    nm_assert(interface_info);
+    nm_assert(property_name);
+
+    /* there is also g_dbus_interface_info_lookup_property(), however that makes use
+     * of a global cache. */
+    if (interface_info->properties) {
+        for (i = 0; interface_info->properties[i]; i++) {
+            GDBusPropertyInfo *info = interface_info->properties[i];
+
+            if (nm_streq(info->name, property_name)) {
+                NM_SET_OUT(property_idx, i);
+                return info;
+            }
+        }
+    }
+
+    return NULL;
+}
+
+GDBusMethodInfo *
+nm_dbus_utils_interface_info_lookup_method(const GDBusInterfaceInfo *interface_info,
+                                           const char *              method_name)
+{
+    guint i;
+
+    nm_assert(interface_info);
+    nm_assert(method_name);
+
+    /* there is also g_dbus_interface_info_lookup_property(), however that makes use
+     * of a global cache. */
+    if (interface_info->methods) {
+        for (i = 0; interface_info->methods[i]; i++) {
+            GDBusMethodInfo *info = interface_info->methods[i];
+
+            if (nm_streq(info->name, method_name))
+                return info;
+        }
+    }
+
+    return NULL;
+}
+
+GVariant *
+nm_dbus_utils_get_property(GObject *obj, const char *signature, const char *property_name)
+{
+    nm_auto_unset_gvalue GValue value = G_VALUE_INIT;
+    GParamSpec *                pspec;
+    GVariant *                  variant;
+
+    nm_assert(G_IS_OBJECT(obj));
+    nm_assert(g_variant_type_string_is_valid(signature));
+    nm_assert(property_name && property_name[0]);
+
+    pspec = g_object_class_find_property(G_OBJECT_GET_CLASS(obj), property_name);
+
+    nm_assert(pspec);
+
+    nm_assert(pspec->value_type != G_TYPE_VARIANT
+              || nm_streq((char *) (((GParamSpecVariant *) pspec)->type), signature));
+
+    g_value_init(&value, pspec->value_type);
+
+    g_object_get_property(obj, property_name, &value);
+
+    variant = g_dbus_gvalue_to_gvariant(&value, G_VARIANT_TYPE(signature));
+
+    nm_assert(!variant || g_variant_is_of_type(variant, G_VARIANT_TYPE(signature)));
+
+    /* returns never-floating variant */
+    nm_assert(!variant || !g_variant_is_floating(variant));
+
+    return variant;
+}
+
+/*****************************************************************************/
+
+void
+nm_dbus_utils_g_value_set_object_path(GValue *value, gpointer object)
+{
+    const char *path;
+
+    g_return_if_fail(!object || NM_IS_DBUS_OBJECT(object));
+
+    if (object && (path = nm_dbus_object_get_path(object)))
+        g_value_set_string(value, path);
+    else
+        g_value_set_string(value, NULL);
+}
+
+void
+nm_dbus_utils_g_value_set_object_path_still_exported(GValue *value, gpointer object)
+{
+    const char *path;
+
+    g_return_if_fail(!object || NM_IS_DBUS_OBJECT(object));
+
+    if (object && (path = nm_dbus_object_get_path_still_exported(object)))
+        g_value_set_string(value, path);
+    else
+        g_value_set_string(value, "/");
+}
+
+void
+nm_dbus_utils_g_value_set_object_path_from_hash(
+    GValue *    value,
+    GHashTable *hash /* has keys of NMDBusObject type. */,
+    gboolean    expect_all_exported)
+{
+    NMDBusObject * obj;
+    char **        strv;
+    guint          i, n;
+    GHashTableIter iter;
+
+    nm_assert(value);
+    nm_assert(hash);
+
+    n    = g_hash_table_size(hash);
+    strv = g_new(char *, n + 1);
+    i    = 0;
+    g_hash_table_iter_init(&iter, hash);
+    while (g_hash_table_iter_next(&iter, (gpointer *) &obj, NULL)) {
+        const char *path;
+
+        path = nm_dbus_object_get_path_still_exported(obj);
+        if (!path) {
+            nm_assert(!expect_all_exported);
+            continue;
+        }
+        strv[i++] = g_strdup(path);
+    }
+    nm_assert(i <= n);
+    strv[i] = NULL;
+
+    /* sort the names, to give a well-defined, stable order. */
+    nm_utils_strv_sort(strv, i);
+
+    g_value_take_boxed(value, strv);
+}
+
+const char **
+nm_dbus_utils_get_paths_for_clist(const CList *lst_head,
+                                  gssize       lst_len,
+                                  guint        member_offset,
+                                  gboolean     expect_all_exported)
+{
+    const CList *iter;
+    const char **strv;
+    const char * path;
+    gsize        i, n;
+
+    nm_assert(lst_head);
+
+    if (lst_len < 0)
+        n = c_list_length(lst_head);
+    else {
+        n = lst_len;
+        nm_assert(n == c_list_length(lst_head));
+    }
+
+    i    = 0;
+    strv = g_new(const char *, n + 1);
+    c_list_for_each (iter, lst_head) {
+        NMDBusObject *obj = (NMDBusObject *) (((const char *) iter) - member_offset);
+
+        path = nm_dbus_object_get_path(obj);
+        if (!path) {
+            nm_assert(expect_all_exported);
+            continue;
+        }
+
+        nm_assert(i < n);
+        strv[i++] = path;
+    }
+    nm_assert(i <= n);
+    strv[i] = NULL;
+
+    return strv;
+}
+
+/*****************************************************************************/
+
+void
+nm_dbus_track_obj_path_init(NMDBusTrackObjPath *track, GObject *target, const GParamSpec *pspec)
+{
+    nm_assert(track);
+    nm_assert(G_IS_OBJECT(target));
+    nm_assert(G_IS_PARAM_SPEC(pspec));
+
+    track->_obj              = NULL;
+    track->_notify_target    = target;
+    track->_notify_pspec     = pspec;
+    track->_notify_signal_id = 0;
+    track->_visible          = FALSE;
+}
+
+void
+nm_dbus_track_obj_path_deinit(NMDBusTrackObjPath *track)
+{
+    /* we allow deinit() to be called multiple times (e.g. from
+     * dispose(), which must be re-entrant). */
+    nm_assert(track);
+    nm_assert(!track->_notify_target || G_IS_OBJECT(track->_notify_target));
+
+    nm_clear_g_signal_handler(track->obj, &track->_notify_signal_id);
+    track->_notify_target = NULL;
+    track->_notify_pspec  = NULL;
+    track->_visible       = FALSE;
+    nm_clear_g_object(&track->_obj);
+}
+
+void
+nm_dbus_track_obj_path_notify(const NMDBusTrackObjPath *track)
+{
+    nm_assert(track);
+    nm_assert(G_IS_OBJECT(track->_notify_target));
+    nm_assert(G_IS_PARAM_SPEC(track->_notify_pspec));
+
+    g_object_notify_by_pspec(track->_notify_target, (GParamSpec *) track->_notify_pspec);
+}
+
+const char *
+nm_dbus_track_obj_path_get(const NMDBusTrackObjPath *track)
+{
+    nm_assert(track);
+    nm_assert(G_IS_OBJECT(track->_notify_target));
+
+    return track->obj && track->visible ? nm_dbus_object_get_path_still_exported(track->obj) : NULL;
+}
+
+static void
+_track_obj_exported_changed(NMDBusObject *obj, NMDBusTrackObjPath *track)
+{
+    nm_dbus_track_obj_path_notify(track);
+}
+
+void
+nm_dbus_track_obj_path_set(NMDBusTrackObjPath *track, gpointer obj, gboolean visible)
+{
+    gs_unref_object NMDBusObject *old_obj = NULL;
+    const char *                  old_path;
+
+    nm_assert(track);
+    nm_assert(G_IS_OBJECT(track->_notify_target));
+
+    g_return_if_fail(!obj || NM_IS_DBUS_OBJECT(obj));
+
+    if (track->obj == obj && track->visible == !!visible)
+        return;
+
+    old_path = nm_dbus_track_obj_path_get(track);
+
+    track->_visible = visible;
+
+    if (track->obj != obj) {
+        nm_clear_g_signal_handler(track->obj, &track->_notify_signal_id);
+
+        old_obj     = track->obj;
+        track->_obj = nm_g_object_ref(obj);
+
+        if (obj) {
+            track->_notify_signal_id = g_signal_connect(obj,
+                                                        NM_DBUS_OBJECT_EXPORTED_CHANGED,
+                                                        G_CALLBACK(_track_obj_exported_changed),
+                                                        track);
+        }
+    }
+
+    if (!nm_streq0(old_path, nm_dbus_track_obj_path_get(track)))
+        nm_dbus_track_obj_path_notify(track);
+}