// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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/*
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* Greybus Component Authentication User Header
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2016 Google Inc. All rights reserved.
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* Copyright(c) 2016 Linaro Ltd. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License version 2 for more details.
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*
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* BSD LICENSE
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*
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* Copyright(c) 2016 Google Inc. All rights reserved.
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* Copyright(c) 2016 Linaro Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. or Linaro Ltd. nor the names of
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* its contributors may be used to endorse or promote products
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* derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC. OR
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* LINARO LTD. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __GREYBUS_AUTHENTICATION_USER_H
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#define __GREYBUS_AUTHENTICATION_USER_H
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#include <linux/ioctl.h>
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#include <linux/types.h>
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#define CAP_CERTIFICATE_MAX_SIZE 1600
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#define CAP_SIGNATURE_MAX_SIZE 320
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/* Certificate class types */
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#define CAP_CERT_IMS_EAPC 0x00000001
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#define CAP_CERT_IMS_EASC 0x00000002
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#define CAP_CERT_IMS_EARC 0x00000003
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#define CAP_CERT_IMS_IAPC 0x00000004
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#define CAP_CERT_IMS_IASC 0x00000005
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#define CAP_CERT_IMS_IARC 0x00000006
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/* IMS Certificate response result codes */
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#define CAP_IMS_RESULT_CERT_FOUND 0x00
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#define CAP_IMS_RESULT_CERT_CLASS_INVAL 0x01
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#define CAP_IMS_RESULT_CERT_CORRUPT 0x02
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#define CAP_IMS_RESULT_CERT_NOT_FOUND 0x03
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/* Authentication types */
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#define CAP_AUTH_IMS_PRI 0x00000001
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#define CAP_AUTH_IMS_SEC 0x00000002
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#define CAP_AUTH_IMS_RSA 0x00000003
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/* Authenticate response result codes */
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#define CAP_AUTH_RESULT_CR_SUCCESS 0x00
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#define CAP_AUTH_RESULT_CR_BAD_TYPE 0x01
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#define CAP_AUTH_RESULT_CR_WRONG_EP 0x02
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#define CAP_AUTH_RESULT_CR_NO_KEY 0x03
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#define CAP_AUTH_RESULT_CR_SIG_FAIL 0x04
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/* IOCTL support */
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struct cap_ioc_get_endpoint_uid {
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__u8 uid[8];
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} __attribute__ ((__packed__));
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struct cap_ioc_get_ims_certificate {
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__u32 certificate_class;
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__u32 certificate_id;
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__u8 result_code;
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__u32 cert_size;
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__u8 certificate[CAP_CERTIFICATE_MAX_SIZE];
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} __attribute__ ((__packed__));
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struct cap_ioc_authenticate {
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__u32 auth_type;
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__u8 uid[8];
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__u8 challenge[32];
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__u8 result_code;
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__u8 response[64];
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__u32 signature_size;
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__u8 signature[CAP_SIGNATURE_MAX_SIZE];
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} __attribute__ ((__packed__));
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#define CAP_IOCTL_BASE 'C'
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#define CAP_IOC_GET_ENDPOINT_UID _IOR(CAP_IOCTL_BASE, 0, struct cap_ioc_get_endpoint_uid)
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#define CAP_IOC_GET_IMS_CERTIFICATE _IOWR(CAP_IOCTL_BASE, 1, struct cap_ioc_get_ims_certificate)
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#define CAP_IOC_AUTHENTICATE _IOWR(CAP_IOCTL_BASE, 2, struct cap_ioc_authenticate)
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#endif /* __GREYBUS_AUTHENTICATION_USER_H */
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