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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2016 Red Hat, Inc.
*/
#include "src/core/nm-default-daemon.h"
#include "nm-ppp-manager-call.h"
#include <sys/types.h>
#include <sys/stat.h>
#include "nm-manager.h"
#include "nm-core-utils.h"
#include "nm-ppp-plugin-api.h"
#define PPP_PLUGIN_PATH NMPLUGINDIR "/libnm-ppp-plugin.so"
/*****************************************************************************/
static const NMPPPOps *_ppp_ops = NULL;
#define ppp_ops_get() ((const NMPPPOps *) g_atomic_pointer_get(&_ppp_ops))
NMPPPManager *
nm_ppp_manager_create(const char *iface, GError **error)
{
NMPPPManager *ret;
GModule *plugin;
GError *error_local = NULL;
struct stat st;
const NMPPPOps *ppp_ops;
again:
ppp_ops = ppp_ops_get();
if (G_UNLIKELY(!ppp_ops)) {
if (stat(PPP_PLUGIN_PATH, &st) != 0) {
g_set_error_literal(error,
NM_MANAGER_ERROR,
NM_MANAGER_ERROR_MISSING_PLUGIN,
"the PPP plugin " PPP_PLUGIN_PATH " is not installed");
return NULL;
}
if (!nm_utils_validate_plugin(PPP_PLUGIN_PATH, &st, &error_local)) {
g_set_error(error,
NM_MANAGER_ERROR,
NM_MANAGER_ERROR_MISSING_PLUGIN,
"could not load the PPP plugin " PPP_PLUGIN_PATH ": %s",
error_local->message);
g_clear_error(&error_local);
return NULL;
}
plugin = g_module_open(PPP_PLUGIN_PATH, G_MODULE_BIND_LOCAL);
if (!plugin) {
g_set_error(error,
NM_MANAGER_ERROR,
NM_MANAGER_ERROR_MISSING_PLUGIN,
"could not load the PPP plugin " PPP_PLUGIN_PATH ": %s",
g_module_error());
return NULL;
}
if (!g_module_symbol(plugin, "ppp_ops", (gpointer *) &ppp_ops)) {
g_set_error(error,
NM_MANAGER_ERROR,
NM_MANAGER_ERROR_MISSING_PLUGIN,
"error loading the PPP plugin: %s",
g_module_error());
return NULL;
}
nm_assert(ppp_ops);
nm_assert(ppp_ops->create);
nm_assert(ppp_ops->start);
nm_assert(ppp_ops->stop);
nm_assert(ppp_ops->stop_cancel);
if (!g_atomic_pointer_compare_and_exchange(&_ppp_ops, NULL, ppp_ops)) {
g_module_close(plugin);
goto again;
}
/* after loading glib types from the plugin, we cannot unload the library anymore.
* Make it resident. */
g_module_make_resident(plugin);
nm_log_info(LOGD_CORE | LOGD_PPP, "loaded PPP plugin " PPP_PLUGIN_PATH);
}
ret = ppp_ops->create(iface);
g_return_val_if_fail(ret, NULL);
return ret;
}
gboolean
nm_ppp_manager_start(NMPPPManager *self,
NMActRequest *req,
const char *ppp_name,
guint32 timeout_secs,
guint baud_override,
GError **err)
{
const NMPPPOps *ppp_ops = ppp_ops_get();
g_return_val_if_fail(ppp_ops, FALSE);
return ppp_ops->start(self, req, ppp_name, timeout_secs, baud_override, err);
}
NMPPPManagerStopHandle *
nm_ppp_manager_stop(NMPPPManager *self,
GCancellable *cancellable,
NMPPPManagerStopCallback callback,
gpointer user_data)
{
const NMPPPOps *ppp_ops = ppp_ops_get();
g_return_val_if_fail(ppp_ops, NULL);
return ppp_ops->stop(self, cancellable, callback, user_data);
}
void
nm_ppp_manager_stop_cancel(NMPPPManagerStopHandle *handle)
{
const NMPPPOps *ppp_ops = ppp_ops_get();
g_return_if_fail(ppp_ops);
g_return_if_fail(handle);
ppp_ops->stop_cancel(handle);
}
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