1 /*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12 /*
13 * Copyright 2019, Joyent, Inc.
14 */
15
16 /*
17 * Open a YubiKey class device read-only and try to get the basic information
18 * applet through an APDU, which should fail. Try to get the status, which
19 * should succeed, and attempt to power off, which should fail.
20 */
21
22 #include <err.h>
23 #include <stdlib.h>
24 #include <sys/types.h>
25 #include <sys/stat.h>
26 #include <fcntl.h>
27 #include <strings.h>
28 #include <unistd.h>
29 #include <errno.h>
30
31 #include <sys/usb/clients/ccid/uccid.h>
32
33 static const uint8_t yk_req[] = {
34 0x00, 0xa4, 0x04, 0x00, 0x07, 0xa0, 0x00, 0x00, 0x05, 0x27, 0x20, 0x01
35 };
36
37 int
main(int argc,char * argv[])38 main(int argc, char *argv[])
39 {
40 int fd, ret;
41 uccid_cmd_icc_modify_t uci;
42 uccid_cmd_txn_begin_t begin;
43 uccid_cmd_status_t ucs;
44 uint8_t buf[UCCID_APDU_SIZE_MAX];
45
46 if (argc != 2) {
47 errx(EXIT_FAILURE, "missing required ccid path");
48 }
49
50 if ((fd = open(argv[1], O_RDONLY)) < 0) {
51 err(EXIT_FAILURE, "failed to open %s", argv[1]);
52 }
53
54 bzero(&begin, sizeof (begin));
55 begin.uct_version = UCCID_CURRENT_VERSION;
56 if (ioctl(fd, UCCID_CMD_TXN_BEGIN, &begin) == 0) {
57 errx(EXIT_FAILURE, "didn't fail to issue begin ioctl");
58 }
59
60 if ((ret = write(fd, yk_req, sizeof (yk_req))) != -1) {
61 errx(EXIT_FAILURE, "didn't fail to write data");
62 }
63
64 if (errno != EBADF) {
65 err(EXIT_FAILURE, "wrong errno for failed write, "
66 "expected EBADF");
67 }
68
69 if ((ret = read(fd, buf, sizeof (buf))) != -1) {
70 errx(EXIT_FAILURE, "didn't fail to read data");
71 }
72
73 if (errno != EACCES) {
74 err(EXIT_FAILURE, "wrong errno for failed read, "
75 "expected EACCES");
76 }
77
78 /* get card status */
79 bzero(&ucs, sizeof (ucs));
80 ucs.ucs_version = UCCID_CURRENT_VERSION;
81 if ((ret = ioctl(fd, UCCID_CMD_STATUS, &ucs)) != 0) {
82 err(EXIT_FAILURE, "failed to get status");
83 }
84
85
86 /* try to power off the card while opened read-only */
87 bzero(&uci, sizeof (uci));
88 uci.uci_version = UCCID_CURRENT_VERSION;
89 uci.uci_action = UCCID_ICC_POWER_OFF;
90 if ((ret = ioctl(fd, UCCID_CMD_ICC_MODIFY, &uci)) == 0) {
91 errx(EXIT_FAILURE, "didn't fail to power off ICC");
92 }
93
94 if (errno != EBADF) {
95 err(EXIT_FAILURE, "wrong errno for failed write, "
96 "expected EBADF");
97 }
98
99 return (0);
100 }
101