// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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/*
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* Sample code to test CAP protocol
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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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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "../../greybus_authentication.h"
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struct cap_ioc_get_endpoint_uid uid;
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struct cap_ioc_get_ims_certificate cert = {
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.certificate_class = 0,
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.certificate_id = 0,
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};
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struct cap_ioc_authenticate authenticate = {
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.auth_type = 0,
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.challenge = {0},
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};
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int main(int argc, char *argv[])
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{
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unsigned int timeout = 10000;
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char *capdev;
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int fd, ret;
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/* Make sure arguments are correct */
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if (argc != 2) {
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printf("\nUsage: ./firmware <Path of the gb-cap-X dev>\n");
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return 0;
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}
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capdev = argv[1];
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printf("Opening %s authentication device\n", capdev);
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fd = open(capdev, O_RDWR);
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if (fd < 0) {
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printf("Failed to open: %s\n", capdev);
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return -1;
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}
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/* Get UID */
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printf("Get UID\n");
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ret = ioctl(fd, CAP_IOC_GET_ENDPOINT_UID, &uid);
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if (ret < 0) {
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printf("Failed to get UID: %s (%d)\n", capdev, ret);
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ret = -1;
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goto close_fd;
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}
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printf("UID received: 0x%llx\n", *(unsigned long long int *)(uid.uid));
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/* Get certificate */
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printf("Get IMS certificate\n");
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ret = ioctl(fd, CAP_IOC_GET_IMS_CERTIFICATE, &cert);
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if (ret < 0) {
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printf("Failed to get IMS certificate: %s (%d)\n", capdev, ret);
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ret = -1;
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goto close_fd;
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}
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printf("IMS Certificate size: %d\n", cert.cert_size);
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/* Authenticate */
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printf("Authenticate module\n");
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memcpy(authenticate.uid, uid.uid, 8);
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ret = ioctl(fd, CAP_IOC_AUTHENTICATE, &authenticate);
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if (ret < 0) {
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printf("Failed to authenticate module: %s (%d)\n", capdev, ret);
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ret = -1;
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goto close_fd;
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}
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printf("Authenticated, result (%02x), sig-size (%02x)\n",
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authenticate.result_code, authenticate.signature_size);
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close_fd:
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close(fd);
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return ret;
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}
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