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/*
* Sample code to test CAP protocol
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2016 Google Inc. All rights reserved.
* Copyright(c) 2016 Linaro Ltd. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* 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 version 2 for more details.
*
* BSD LICENSE
*
* Copyright(c) 2016 Google Inc. All rights reserved.
* Copyright(c) 2016 Linaro Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. or Linaro Ltd. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC. OR
* LINARO LTD. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "../../greybus_authentication.h"
struct cap_ioc_get_endpoint_uid uid;
struct cap_ioc_get_ims_certificate cert = {
.certificate_class = 0,
.certificate_id = 0,
};
struct cap_ioc_authenticate authenticate = {
.auth_type = 0,
.challenge = {0},
};
int main(int argc, char *argv[])
{
unsigned int timeout = 10000;
char *capdev;
int fd, ret;
/* Make sure arguments are correct */
if (argc != 2) {
printf("\nUsage: ./firmware <Path of the gb-cap-X dev>\n");
return 0;
}
capdev = argv[1];
printf("Opening %s authentication device\n", capdev);
fd = open(capdev, O_RDWR);
if (fd < 0) {
printf("Failed to open: %s\n", capdev);
return -1;
}
/* Get UID */
printf("Get UID\n");
ret = ioctl(fd, CAP_IOC_GET_ENDPOINT_UID, &uid);
if (ret < 0) {
printf("Failed to get UID: %s (%d)\n", capdev, ret);
ret = -1;
goto close_fd;
}
printf("UID received: 0x%llx\n", *(unsigned long long int *)(uid.uid));
/* Get certificate */
printf("Get IMS certificate\n");
ret = ioctl(fd, CAP_IOC_GET_IMS_CERTIFICATE, &cert);
if (ret < 0) {
printf("Failed to get IMS certificate: %s (%d)\n", capdev, ret);
ret = -1;
goto close_fd;
}
printf("IMS Certificate size: %d\n", cert.cert_size);
/* Authenticate */
printf("Authenticate module\n");
memcpy(authenticate.uid, uid.uid, 8);
ret = ioctl(fd, CAP_IOC_AUTHENTICATE, &authenticate);
if (ret < 0) {
printf("Failed to authenticate module: %s (%d)\n", capdev, ret);
ret = -1;
goto close_fd;
}
printf("Authenticated, result (%02x), sig-size (%02x)\n",
authenticate.result_code, authenticate.signature_size);
close_fd:
close(fd);
return ret;
}
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