// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) /* * Sample code to test CAP protocol * * Copyright(c) 2016 Google Inc. All rights reserved. * Copyright(c) 2016 Linaro Ltd. All rights reserved. */ #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; }