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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2010 - 2012 Red Hat, Inc.
*/
#include "src/core/nm-default-daemon.h"
#include "nm-dns-plugin.h"
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "libnm-core-intern/nm-core-internal.h"
#include "NetworkManagerUtils.h"
/*****************************************************************************/
enum {
UPDATE_PENDING_CHANGED,
LAST_SIGNAL,
};
static guint signals[LAST_SIGNAL] = {0};
typedef struct _NMDnsPluginPrivate {
bool update_pending_inited : 1;
bool update_pending : 1;
} NMDnsPluginPrivate;
G_DEFINE_ABSTRACT_TYPE(NMDnsPlugin, nm_dns_plugin, G_TYPE_OBJECT)
#define NM_DNS_PLUGIN_GET_PRIVATE(self) _NM_GET_PRIVATE_PTR(self, NMDnsPlugin, NM_IS_DNS_PLUGIN)
/*****************************************************************************/
#define _NMLOG_PREFIX_NAME "dns-plugin"
#define _NMLOG_DOMAIN LOGD_DNS
#define _NMLOG(level, ...) \
G_STMT_START \
{ \
const NMLogLevel __level = (level); \
\
if (nm_logging_enabled(__level, _NMLOG_DOMAIN)) { \
char __prefix[20]; \
const NMDnsPlugin *const __self = (self); \
\
_nm_log(__level, \
_NMLOG_DOMAIN, \
0, \
NULL, \
NULL, \
"%s%s: " _NM_UTILS_MACRO_FIRST(__VA_ARGS__), \
_NMLOG_PREFIX_NAME, \
(!__self ? "" \
: nm_sprintf_buf(__prefix, \
"[" NM_HASH_OBFUSCATE_PTR_FMT "]", \
NM_HASH_OBFUSCATE_PTR( \
__self))) _NM_UTILS_MACRO_REST(__VA_ARGS__)); \
} \
} \
G_STMT_END
/*****************************************************************************/
gboolean
nm_dns_plugin_update(NMDnsPlugin *self,
const NMGlobalDnsConfig *global_config,
const CList *ip_config_lst_head,
const char *hostdomain,
GError **error)
{
g_return_val_if_fail(NM_DNS_PLUGIN_GET_CLASS(self)->update != NULL, FALSE);
return NM_DNS_PLUGIN_GET_CLASS(self)->update(self,
global_config,
ip_config_lst_head,
hostdomain,
error);
}
gboolean
nm_dns_plugin_is_caching(NMDnsPlugin *self)
{
return NM_DNS_PLUGIN_GET_CLASS(self)->is_caching;
}
const char *
nm_dns_plugin_get_name(NMDnsPlugin *self)
{
NMDnsPluginClass *klass;
g_return_val_if_fail(NM_IS_DNS_PLUGIN(self), NULL);
klass = NM_DNS_PLUGIN_GET_CLASS(self);
nm_assert(klass->plugin_name);
return klass->plugin_name;
}
void
nm_dns_plugin_stop(NMDnsPlugin *self)
{
NMDnsPluginClass *klass;
g_return_if_fail(NM_IS_DNS_PLUGIN(self));
klass = NM_DNS_PLUGIN_GET_CLASS(self);
if (klass->stop)
klass->stop(self);
}
/*****************************************************************************/
static gboolean
_get_update_pending(NMDnsPlugin *self)
{
NMDnsPluginClass *klass;
nm_assert(NM_IS_DNS_PLUGIN(self));
klass = NM_DNS_PLUGIN_GET_CLASS(self);
if (klass->get_update_pending) {
if (klass->get_update_pending(self))
return TRUE;
}
return FALSE;
}
gboolean
nm_dns_plugin_get_update_pending(NMDnsPlugin *self)
{
NMDnsPluginPrivate *priv;
g_return_val_if_fail(NM_IS_DNS_PLUGIN(self), FALSE);
priv = NM_DNS_PLUGIN_GET_PRIVATE(self);
/* We cache the boolean and rely on the subclass to call
* _nm_dns_plugin_update_pending_maybe_changed(). The subclass
* anyway must get it right to notify us when the value (maybe)
* changes. By caching the value, the subclass is free to notify
* even if the value did not actually change.
*
* Also, this allows the base implementation to combine multiple
* sources/reasons (if we need that in the future). */
if (!priv->update_pending_inited) {
priv->update_pending_inited = TRUE;
priv->update_pending = _get_update_pending(self);
_LOGD("[%s] update-pending changed (%spending)",
nm_dns_plugin_get_name(self),
priv->update_pending ? "" : "not ");
} else
nm_assert(priv->update_pending == _get_update_pending(self));
return priv->update_pending;
}
void
_nm_dns_plugin_update_pending_maybe_changed(NMDnsPlugin *self)
{
NMDnsPluginPrivate *priv;
gboolean v;
g_return_if_fail(NM_IS_DNS_PLUGIN(self));
priv = NM_DNS_PLUGIN_GET_PRIVATE(self);
v = _get_update_pending(self);
if (!priv->update_pending_inited)
priv->update_pending_inited = TRUE;
else if (priv->update_pending == v)
return;
priv->update_pending = v;
_LOGD("[%s] update-pending changed (%spending)",
nm_dns_plugin_get_name(self),
priv->update_pending ? "" : "not ");
g_signal_emit(self, signals[UPDATE_PENDING_CHANGED], 0, (gboolean) priv->update_pending);
}
/*****************************************************************************/
static void
nm_dns_plugin_init(NMDnsPlugin *self)
{
NMDnsPluginPrivate *priv;
priv = G_TYPE_INSTANCE_GET_PRIVATE(self, NM_TYPE_DNS_PLUGIN, NMDnsPluginPrivate);
self->_priv = priv;
nm_assert(priv->update_pending_inited == FALSE);
nm_assert(priv->update_pending == FALSE);
nm_shutdown_wait_obj_register_object(self, "dns-plugin");
}
static void
nm_dns_plugin_class_init(NMDnsPluginClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS(klass);
g_type_class_add_private(object_class, sizeof(NMDnsPluginPrivate));
signals[UPDATE_PENDING_CHANGED] = g_signal_new(NM_DNS_PLUGIN_UPDATE_PENDING_CHANGED,
G_OBJECT_CLASS_TYPE(klass),
G_SIGNAL_RUN_FIRST,
0,
NULL,
NULL,
NULL,
G_TYPE_NONE,
1,
G_TYPE_BOOLEAN);
}
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