/*

 * Copyright (c) 2012-2022 Huawei Technologies Co., Ltd.

 * Description: allowed_ext_agent_ca list and functions.

 *

 * This software is licensed under the terms of the GNU General Public

 * License version 2, as published by the Free Software Foundation, and

 * may be copied, distributed, and modified under those terms.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

 * GNU General Public License for more details.

 */



#include "agent.h"

#include <linux/uaccess.h>

#include <linux/kernel.h>

#include <securec.h>



static struct ca_info g_allowed_ext_agent_ca[] = {

#ifdef CONFIG_TZDRIVER

	{

		"/vendor/bin/hiaiserver",

		3094,

		TEE_SECE_AGENT_ID,

	},

	{

		"/vendor/bin/hw/hdf_devhost",

		1114,

		TEE_FACE_AGENT1_ID,

	},

#endif

#ifdef DEF_ENG

	{

		"/vendor/bin/tee_test_agent",

		0,

		TEE_SECE_AGENT_ID,

	},

#endif

};



int is_allowed_agent_ca(const struct ca_info *ca,

	bool check_agent_id)

{

	uint32_t i;

	struct ca_info *tmp_ca = g_allowed_ext_agent_ca;

	const uint32_t nr = ARRAY_SIZE(g_allowed_ext_agent_ca);



	if (!ca)

		return -EFAULT;



	if (!check_agent_id) {

		for (i = 0; i < nr; i++) {

			if (!strncmp(ca->path, tmp_ca->path,

				strlen(tmp_ca->path) + 1) &&

				ca->uid == tmp_ca->uid)

				return 0;

			tmp_ca++;

		}

	} else {

		for (i = 0; i < nr; i++) {

			if (!strncmp(ca->path, tmp_ca->path,

					strlen(tmp_ca->path) + 1) &&

					ca->uid == tmp_ca->uid &&

					ca->agent_id == tmp_ca->agent_id)

					return 0;

				tmp_ca++;

		}

	}

	tlogd("ca-uid is %u, ca_path is %s, agent id is %x\n", ca->uid,

		ca->path, ca->agent_id);



	return -EACCES;

}