/**

 * FreeRDP: A Remote Desktop Protocol Implementation

 * FreeRDP Proxy Server

 *

 * Copyright 2019 Mati Shabtay <matishabtay@gmail.com>

 * Copyright 2019 Kobi Mizrachi <kmizrachi18@gmail.com>

 * Copyright 2019 Idan Freiberg <speidy@gmail.com>

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#include "pf_server.h"

#include "pf_config.h"

#include "pf_log.h"

#include "pf_modules.h"

#include <freerdp/version.h>

#include <freerdp/build-config.h>

#include <winpr/collections.h>

#include <stdlib.h>

#include <signal.h>

#define TAG PROXY_TAG("server")

static proxyServer* server = NULL;

static void cleanup_handler(int signum)

{

	printf("\n");

	WLog_INFO(TAG, "[%s]: caught signal %d, starting cleanup...", __FUNCTION__, signum);

	WLog_INFO(TAG, "stopping all connections.");

	pf_server_stop(server);

	WLog_INFO(TAG, "freeing loaded modules and plugins.");

	pf_modules_free();

	pf_server_config_free(server->config);

	pf_server_free(server);

	WLog_INFO(TAG, "exiting.");

	exit(0);

}

static void pf_server_register_signal_handlers(void)

{

	signal(SIGINT, cleanup_handler);

	signal(SIGTERM, cleanup_handler);

#ifndef _WIN32

	signal(SIGQUIT, cleanup_handler);

	signal(SIGKILL, cleanup_handler);

#endif

}

static BOOL is_all_required_modules_loaded(proxyConfig* config)

{

	size_t i;

	for (i = 0; i < config->RequiredPluginsCount; i++)

	{

		const char* plugin_name = config->RequiredPlugins[i];

		if (!pf_modules_is_plugin_loaded(plugin_name))

		{

			WLog_ERR(TAG, "Required plugin '%s' is not loaded. stopping.", plugin_name);

			return FALSE;

		}

	}

	return TRUE;

}

int main(int argc, char* argv[])

{

	proxyConfig* config = NULL;

	char* config_path = "config.ini";

	int status = -1;

	WLog_INFO(TAG, "freerdp-proxy version info:");

	WLog_INFO(TAG, "\tFreeRDP version: %s", FREERDP_VERSION_FULL);

	WLog_INFO(TAG, "\tGit commit: %s", GIT_REVISION);

	WLog_DBG(TAG, "\tBuild config: %s", freerdp_get_build_config());

	if (argc >= 2)

		config_path = argv[1];

	config = pf_server_config_load(config_path);

	if (!config)

		goto fail;

	pf_server_config_print(config);

	if (!pf_modules_init(FREERDP_PROXY_PLUGINDIR, (const char**)config->Modules,

	                     config->ModulesCount))

	{

		WLog_ERR(TAG, "failed to initialize proxy modules!");

		goto fail;

	}

	pf_modules_list_loaded_plugins();

	if (!is_all_required_modules_loaded(config))

		goto fail;

	pf_server_register_signal_handlers();

	server = pf_server_new(config);

	if (!server)

		goto fail;

	if (!pf_server_start(server))

		goto fail;

	if (WaitForSingleObject(server->thread, INFINITE) != WAIT_OBJECT_0)

		goto fail;

	status = 0;

fail:

	pf_server_free(server);

	pf_modules_free();

	pf_server_config_free(config);

	return status;

}