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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2019, Joyent, Inc.
*/
/*
* Open a YubiKey class device and get the basic information applet
* through an APDU while using poll(2) to check device readyness.
*/
#include <err.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <strings.h>
#include <unistd.h>
#include <errno.h>
#include <poll.h>
#include <sys/usb/clients/ccid/uccid.h>
static const uint8_t yk_req[] = {
0x00, 0xa4, 0x04, 0x00, 0x07, 0xa0, 0x00, 0x00, 0x05, 0x27, 0x20, 0x01
};
int
main(int argc, char *argv[])
{
int fd, ret;
struct pollfd pfds[1];
uccid_cmd_txn_begin_t begin;
uint8_t buf[UCCID_APDU_SIZE_MAX];
if (argc != 2) {
errx(EXIT_FAILURE, "missing required ccid path");
}
if ((fd = open(argv[1], O_RDWR)) < 0) {
err(EXIT_FAILURE, "failed to open %s", argv[1]);
}
bzero(&begin, sizeof (begin));
begin.uct_version = UCCID_CURRENT_VERSION;
if (ioctl(fd, UCCID_CMD_TXN_BEGIN, &begin) != 0) {
err(EXIT_FAILURE, "failed to issue begin ioctl");
}
pfds[0].fd = fd;
pfds[0].events = POLLOUT | POLLIN | POLLRDNORM;
pfds[0].revents = 0;
ret = poll(pfds, 1, 0);
if (ret != 1) {
err(EXIT_FAILURE, "poll didn't return 1, returned %d "
"(errno %d)", ret, errno);
}
if ((pfds[0].revents & POLLOUT) != POLLOUT) {
err(EXIT_FAILURE, "expecting pollout, got %d", pfds[0].revents);
}
if ((ret = write(fd, yk_req, sizeof (yk_req))) < 0) {
err(EXIT_FAILURE, "failed to write data");
}
pfds[0].revents = 0;
ret = poll(pfds, 1, -1);
if (ret != 1) {
err(EXIT_FAILURE, "poll didn't return 1, returned %d "
"(errno %d)", ret, errno);
}
if ((pfds[0].revents & (POLLIN | POLLRDNORM)) !=
(POLLIN | POLLRDNORM)) {
err(EXIT_FAILURE, "expecting pollin|pollrdnorm, got %d",
pfds[0].revents);
}
if ((ret = read(fd, buf, sizeof (buf))) < 0) {
err(EXIT_FAILURE, "failed to read data");
}
pfds[0].revents = 0;
ret = poll(pfds, 1, 0);
if (ret != 1) {
err(EXIT_FAILURE, "poll didn't return 1, returned %d "
"(errno %d)", ret, errno);
}
if ((pfds[0].revents & POLLOUT) != POLLOUT) {
err(EXIT_FAILURE, "expecting pollout, got %d", pfds[0].revents);
}
return (0);
}
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