xref: /freebsd/usr.sbin/usbconfig/usbconfig.c (revision 4f52dfbb)
1 /* $FreeBSD$ */
2 /*-
3  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4  *
5  * Copyright (c) 2008-2009 Hans Petter Selasky. All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <stdint.h>
32 #include <err.h>
33 #include <string.h>
34 #include <pwd.h>
35 #include <grp.h>
36 #include <errno.h>
37 #include <ctype.h>
38 #include <sys/types.h>
39 
40 #include <libusb20_desc.h>
41 #include <libusb20.h>
42 
43 #include "dump.h"
44 
45 struct options {
46 	const char *quirkname;
47 	void   *buffer;
48 	int template;
49 	gid_t	gid;
50 	uid_t	uid;
51 	mode_t	mode;
52 	uint32_t got_any;
53 	struct LIBUSB20_CONTROL_SETUP_DECODED setup;
54 	uint16_t bus;
55 	uint16_t addr;
56 	uint16_t iface;
57 	uint16_t vid;
58 	uint16_t pid;
59 	uint16_t lo_rev;		/* inclusive */
60 	uint16_t hi_rev;		/* inclusive */
61 	uint8_t	string_index;
62 	uint8_t	config_index;
63 	uint8_t	alt_index;
64 	uint8_t	got_list:1;
65 	uint8_t	got_bus:1;
66 	uint8_t	got_addr:1;
67 	uint8_t	got_iface:1;
68 	uint8_t	got_set_config:1;
69 	uint8_t	got_set_alt:1;
70 	uint8_t	got_set_template:1;
71 	uint8_t	got_get_template:1;
72 	uint8_t	got_suspend:1;
73 	uint8_t	got_resume:1;
74 	uint8_t	got_reset:1;
75 	uint8_t	got_power_off:1;
76 	uint8_t	got_power_save:1;
77 	uint8_t	got_power_on:1;
78 	uint8_t	got_dump_device_quirks:1;
79 	uint8_t	got_dump_quirk_names:1;
80 	uint8_t	got_dump_all_desc:1;
81 	uint8_t	got_dump_device_desc:1;
82 	uint8_t	got_dump_curr_config:1;
83 	uint8_t	got_dump_all_config:1;
84 	uint8_t	got_dump_info:1;
85 	uint8_t	got_show_iface_driver:1;
86 	uint8_t	got_remove_device_quirk:1;
87 	uint8_t	got_add_device_quirk:1;
88 	uint8_t	got_remove_quirk:1;
89 	uint8_t	got_add_quirk:1;
90 	uint8_t	got_dump_string:1;
91 	uint8_t	got_do_request:1;
92 };
93 
94 struct token {
95 	const char *name;
96 	uint8_t	value;
97 	uint8_t	narg;
98 };
99 
100 enum {
101 	T_UNIT,
102 	T_ADDR,
103 	T_UGEN,
104 	T_IFACE,
105 	T_SET_CONFIG,
106 	T_SET_ALT,
107 	T_SET_TEMPLATE,
108 	T_GET_TEMPLATE,
109 	T_ADD_DEVICE_QUIRK,
110 	T_REMOVE_DEVICE_QUIRK,
111 	T_ADD_QUIRK,
112 	T_REMOVE_QUIRK,
113 	T_SHOW_IFACE_DRIVER,
114 	T_DUMP_QUIRK_NAMES,
115 	T_DUMP_DEVICE_QUIRKS,
116 	T_DUMP_ALL_DESC,
117 	T_DUMP_DEVICE_DESC,
118 	T_DUMP_CURR_CONFIG_DESC,
119 	T_DUMP_ALL_CONFIG_DESC,
120 	T_DUMP_STRING,
121 	T_DUMP_INFO,
122 	T_SUSPEND,
123 	T_RESUME,
124 	T_POWER_OFF,
125 	T_POWER_SAVE,
126 	T_POWER_ON,
127 	T_RESET,
128 	T_LIST,
129 	T_DO_REQUEST,
130 };
131 
132 static struct options options;
133 
134 static const struct token token[] = {
135 	{"-u", T_UNIT, 1},
136 	{"-a", T_ADDR, 1},
137 	{"-d", T_UGEN, 1},
138 	{"-i", T_IFACE, 1},
139 	{"set_config", T_SET_CONFIG, 1},
140 	{"set_alt", T_SET_ALT, 1},
141 	{"set_template", T_SET_TEMPLATE, 1},
142 	{"get_template", T_GET_TEMPLATE, 0},
143 	{"add_dev_quirk_vplh", T_ADD_DEVICE_QUIRK, 5},
144 	{"remove_dev_quirk_vplh", T_REMOVE_DEVICE_QUIRK, 5},
145 	{"add_quirk", T_ADD_QUIRK, 1},
146 	{"remove_quirk", T_REMOVE_QUIRK, 1},
147 	{"dump_quirk_names", T_DUMP_QUIRK_NAMES, 0},
148 	{"dump_device_quirks", T_DUMP_DEVICE_QUIRKS, 0},
149 	{"dump_all_desc", T_DUMP_ALL_DESC, 0},
150 	{"dump_device_desc", T_DUMP_DEVICE_DESC, 0},
151 	{"dump_curr_config_desc", T_DUMP_CURR_CONFIG_DESC, 0},
152 	{"dump_all_config_desc", T_DUMP_ALL_CONFIG_DESC, 0},
153 	{"dump_string", T_DUMP_STRING, 1},
154 	{"dump_info", T_DUMP_INFO, 0},
155 	{"show_ifdrv", T_SHOW_IFACE_DRIVER, 0},
156 	{"suspend", T_SUSPEND, 0},
157 	{"resume", T_RESUME, 0},
158 	{"power_off", T_POWER_OFF, 0},
159 	{"power_save", T_POWER_SAVE, 0},
160 	{"power_on", T_POWER_ON, 0},
161 	{"reset", T_RESET, 0},
162 	{"list", T_LIST, 0},
163 	{"do_request", T_DO_REQUEST, 5},
164 };
165 
166 static void
167 be_dev_remove_quirk(struct libusb20_backend *pbe,
168     uint16_t vid, uint16_t pid, uint16_t lorev, uint16_t hirev,
169     const char *str)
170 {
171 	struct libusb20_quirk q;
172 	int error;
173 
174 	memset(&q, 0, sizeof(q));
175 
176 	q.vid = vid;
177 	q.pid = pid;
178 	q.bcdDeviceLow = lorev;
179 	q.bcdDeviceHigh = hirev;
180 	strlcpy(q.quirkname, str, sizeof(q.quirkname));
181 
182 	error = libusb20_be_remove_dev_quirk(pbe, &q);
183 	if (error) {
184 		fprintf(stderr, "Removing quirk '%s' failed, continuing.\n", str);
185 	}
186 	return;
187 }
188 
189 static void
190 be_dev_add_quirk(struct libusb20_backend *pbe,
191     uint16_t vid, uint16_t pid, uint16_t lorev, uint16_t hirev,
192     const char *str)
193 {
194 	struct libusb20_quirk q;
195 	int error;
196 
197 	memset(&q, 0, sizeof(q));
198 
199 	q.vid = vid;
200 	q.pid = pid;
201 	q.bcdDeviceLow = lorev;
202 	q.bcdDeviceHigh = hirev;
203 	strlcpy(q.quirkname, str, sizeof(q.quirkname));
204 
205 	error = libusb20_be_add_dev_quirk(pbe, &q);
206 	if (error) {
207 		fprintf(stderr, "Adding quirk '%s' failed, continuing.\n", str);
208 	}
209 	return;
210 }
211 
212 static uint8_t
213 get_token(const char *str, uint8_t narg)
214 {
215 	uint8_t n;
216 
217 	for (n = 0; n != (sizeof(token) / sizeof(token[0])); n++) {
218 		if (strcasecmp(str, token[n].name) == 0) {
219 			if (token[n].narg > narg) {
220 				/* too few arguments */
221 				break;
222 			}
223 			return (token[n].value);
224 		}
225 	}
226 	return (0 - 1);
227 }
228 
229 static uid_t
230 num_id(const char *name, const char *type)
231 {
232 	uid_t val;
233 	char *ep;
234 
235 	errno = 0;
236 	val = strtoul(name, &ep, 0);
237 	if (errno) {
238 		err(1, "%s", name);
239 	}
240 	if (*ep != '\0') {
241 		errx(1, "%s: illegal %s name", name, type);
242 	}
243 	return (val);
244 }
245 
246 static int
247 get_int(const char *s)
248 {
249 	int val;
250 	char *ep;
251 
252 	errno = 0;
253 	val = strtoul(s, &ep, 0);
254 	if (errno) {
255 		err(1, "%s", s);
256 	}
257 	if (*ep != '\0') {
258 		errx(1, "illegal number: %s", s);
259 	}
260 	return val;
261 }
262 
263 static void
264 duplicate_option(const char *ptr)
265 {
266 	fprintf(stderr, "Syntax error: "
267 	    "Duplicate option: '%s'\n", ptr);
268 	exit(1);
269 }
270 
271 static void
272 usage(void)
273 {
274 	fprintf(stderr, ""
275 	    "usbconfig - configure the USB subsystem" "\n"
276 	    "usage: usbconfig -u <busnum> -a <devaddr> -i <ifaceindex> [cmds...]" "\n"
277 	    "usage: usbconfig -d [ugen]<busnum>.<devaddr> -i <ifaceindex> [cmds...]" "\n"
278 	    "commands:" "\n"
279 	    "  set_config <cfg_index>" "\n"
280 	    "  set_alt <alt_index>" "\n"
281 	    "  set_template <template>" "\n"
282 	    "  get_template" "\n"
283 	    "  add_dev_quirk_vplh <vid> <pid> <lo_rev> <hi_rev> <quirk>" "\n"
284 	    "  remove_dev_quirk_vplh <vid> <pid> <lo_rev> <hi_rev> <quirk>" "\n"
285 	    "  add_quirk <quirk>" "\n"
286 	    "  remove_quirk <quirk>" "\n"
287 	    "  dump_quirk_names" "\n"
288 	    "  dump_device_quirks" "\n"
289 	    "  dump_all_desc" "\n"
290 	    "  dump_device_desc" "\n"
291 	    "  dump_curr_config_desc" "\n"
292 	    "  dump_all_config_desc" "\n"
293 	    "  dump_string <index>" "\n"
294 	    "  dump_info" "\n"
295 	    "  show_ifdrv" "\n"
296 	    "  suspend" "\n"
297 	    "  resume" "\n"
298 	    "  power_off" "\n"
299 	    "  power_save" "\n"
300 	    "  power_on" "\n"
301 	    "  reset" "\n"
302 	    "  list" "\n"
303 	    "  do_request <bmReqTyp> <bReq> <wVal> <wIdx> <wLen> <data...>" "\n"
304 	);
305 	exit(1);
306 }
307 
308 static void
309 reset_options(struct options *opt)
310 {
311 	if (opt->buffer)
312 		free(opt->buffer);
313 	memset(opt, 0, sizeof(*opt));
314 	return;
315 }
316 
317 static void
318 flush_command(struct libusb20_backend *pbe, struct options *opt)
319 {
320 	struct libusb20_device *pdev = NULL;
321 	uint32_t matches = 0;
322 	uint8_t dump_any;
323 
324 	/* check for invalid option combinations */
325 	if ((opt->got_suspend +
326 	    opt->got_resume +
327 	    opt->got_reset +
328 	    opt->got_set_config +
329 	    opt->got_set_alt +
330 	    opt->got_power_save +
331 	    opt->got_power_on +
332 	    opt->got_power_off) > 1) {
333 		err(1, "can only specify one of 'set_config', "
334 		    "'set_alt', 'reset', 'suspend', 'resume', "
335 		    "'power_save', 'power_on' and 'power_off' "
336 		    "at the same time!");
337 	}
338 	if (opt->got_dump_quirk_names) {
339 		opt->got_any--;
340 		dump_be_quirk_names(pbe);
341 	}
342 	if (opt->got_dump_device_quirks) {
343 		opt->got_any--;
344 		dump_be_dev_quirks(pbe);
345 	}
346 	if (opt->got_remove_device_quirk) {
347 		opt->got_any--;
348 		be_dev_remove_quirk(pbe,
349 		    opt->vid, opt->pid, opt->lo_rev, opt->hi_rev, opt->quirkname);
350 	}
351 	if (opt->got_add_device_quirk) {
352 		opt->got_any--;
353 		be_dev_add_quirk(pbe,
354 		    opt->vid, opt->pid, opt->lo_rev, opt->hi_rev, opt->quirkname);
355 	}
356 	if (opt->got_set_template) {
357 		opt->got_any--;
358 		if (libusb20_be_set_template(pbe, opt->template)) {
359 			fprintf(stderr, "Setting USB template %u failed, "
360 			    "continuing.\n", opt->template);
361 		}
362 	}
363 	if (opt->got_get_template) {
364 		opt->got_any--;
365 		if (libusb20_be_get_template(pbe, &opt->template))
366 			printf("USB template: <unknown>\n");
367 		else
368 			printf("USB template: %u\n", opt->template);
369 	}
370 	if (opt->got_any == 0) {
371 		/*
372 		 * do not scan through all the devices if there are no valid
373 		 * options
374 		 */
375 		goto done;
376 	}
377 	while ((pdev = libusb20_be_device_foreach(pbe, pdev))) {
378 
379 		if (opt->got_bus &&
380 		    (libusb20_dev_get_bus_number(pdev) != opt->bus)) {
381 			continue;
382 		}
383 		if (opt->got_addr &&
384 		    (libusb20_dev_get_address(pdev) != opt->addr)) {
385 			continue;
386 		}
387 		matches++;
388 
389 		if (opt->got_remove_quirk) {
390 			struct LIBUSB20_DEVICE_DESC_DECODED *ddesc;
391 
392 			ddesc = libusb20_dev_get_device_desc(pdev);
393 
394 			be_dev_remove_quirk(pbe,
395 			    ddesc->idVendor, ddesc->idProduct,
396 			    ddesc->bcdDevice, ddesc->bcdDevice,
397 			    opt->quirkname);
398 		}
399 
400 		if (opt->got_add_quirk) {
401 			struct LIBUSB20_DEVICE_DESC_DECODED *ddesc;
402 
403 			ddesc = libusb20_dev_get_device_desc(pdev);
404 
405 			be_dev_add_quirk(pbe,
406 			    ddesc->idVendor, ddesc->idProduct,
407 			    ddesc->bcdDevice, ddesc->bcdDevice,
408 			    opt->quirkname);
409 		}
410 
411 		if (libusb20_dev_open(pdev, 0)) {
412 			err(1, "could not open device");
413 		}
414 		if (opt->got_dump_string) {
415 			dump_string_by_index(pdev, opt->string_index);
416 		}
417 		if (opt->got_do_request) {
418 			uint16_t actlen;
419 			uint16_t t;
420 
421 			if (libusb20_dev_request_sync(pdev, &opt->setup,
422 			    opt->buffer, &actlen, 5000 /* 5 seconds */ , 0)) {
423 				printf("REQUEST = <ERROR>\n");
424 			} else if (!(opt->setup.bmRequestType &
425 			    LIBUSB20_ENDPOINT_IN)) {
426 				printf("REQUEST = <OK>\n");
427 			} else {
428 				t = actlen;
429 				printf("REQUEST = <");
430 				for (t = 0; t != actlen; t++) {
431 					printf("0x%02x%s",
432 					    ((uint8_t *)opt->buffer)[t],
433 					    (t == (actlen - 1)) ? "" : " ");
434 				}
435 				printf("><");
436 				for (t = 0; t != actlen; t++) {
437 					char c;
438 
439 					c = ((uint8_t *)opt->buffer)[t];
440 					if ((c != '<') &&
441 					    (c != '>') && isprint(c)) {
442 						putchar(c);
443 					}
444 				}
445 				printf(">\n");
446 			}
447 		}
448 		if (opt->got_set_config) {
449 			if (libusb20_dev_set_config_index(pdev,
450 			    opt->config_index)) {
451 				err(1, "could not set config index");
452 			}
453 		}
454 		if (opt->got_set_alt) {
455 			if (libusb20_dev_set_alt_index(pdev, opt->iface,
456 			    opt->alt_index)) {
457 				err(1, "could not set alternate setting");
458 			}
459 		}
460 		if (opt->got_reset) {
461 			if (libusb20_dev_reset(pdev)) {
462 				err(1, "could not reset device");
463 			}
464 		}
465 		if (opt->got_suspend) {
466 			if (libusb20_dev_set_power_mode(pdev,
467 			    LIBUSB20_POWER_SUSPEND)) {
468 				err(1, "could not set suspend");
469 			}
470 		}
471 		if (opt->got_resume) {
472 			if (libusb20_dev_set_power_mode(pdev,
473 			    LIBUSB20_POWER_RESUME)) {
474 				err(1, "could not set resume");
475 			}
476 		}
477 		if (opt->got_power_off) {
478 			if (libusb20_dev_set_power_mode(pdev,
479 			    LIBUSB20_POWER_OFF)) {
480 				err(1, "could not set power OFF");
481 			}
482 		}
483 		if (opt->got_power_save) {
484 			if (libusb20_dev_set_power_mode(pdev,
485 			    LIBUSB20_POWER_SAVE)) {
486 				err(1, "could not set power SAVE");
487 			}
488 		}
489 		if (opt->got_power_on) {
490 			if (libusb20_dev_set_power_mode(pdev,
491 			    LIBUSB20_POWER_ON)) {
492 				err(1, "could not set power ON");
493 			}
494 		}
495 		dump_any =
496 		    (opt->got_dump_all_desc ||
497 		    opt->got_dump_device_desc ||
498 		    opt->got_dump_curr_config ||
499 		    opt->got_dump_all_config ||
500 		    opt->got_dump_info);
501 
502 		if (opt->got_list || dump_any) {
503 			dump_device_info(pdev,
504 			    opt->got_show_iface_driver);
505 		}
506 		if (opt->got_dump_device_desc) {
507 			printf("\n");
508 			dump_device_desc(pdev);
509 		}
510 		if (opt->got_dump_all_config) {
511 			printf("\n");
512 			dump_config(pdev, 1);
513 		} else if (opt->got_dump_curr_config) {
514 			printf("\n");
515 			dump_config(pdev, 0);
516 		} else if (opt->got_dump_all_desc) {
517 			printf("\n");
518 			dump_device_desc(pdev);
519 			dump_config(pdev, 1);
520 		}
521 		if (dump_any) {
522 			printf("\n");
523 		}
524 		if (libusb20_dev_close(pdev)) {
525 			err(1, "could not close device");
526 		}
527 	}
528 
529 	if (matches == 0) {
530 		printf("No device match or lack of permissions.\n");
531 	}
532 done:
533 	reset_options(opt);
534 
535 	return;
536 }
537 
538 int
539 main(int argc, char **argv)
540 {
541 	struct libusb20_backend *pbe;
542 	struct options *opt = &options;
543 	const char *ptr;
544 	int unit;
545 	int addr;
546 	int n;
547 	int t;
548 
549 	if (argc < 1) {
550 		usage();
551 	}
552 	pbe = libusb20_be_alloc_default();
553 	if (pbe == NULL)
554 		err(1, "could not access USB backend\n");
555 
556 	for (n = 1; n != argc; n++) {
557 
558 		/* get number of additional options */
559 		t = (argc - n - 1);
560 		if (t > 255)
561 			t = 255;
562 		switch (get_token(argv[n], t)) {
563 		case T_ADD_QUIRK:
564 			if (opt->got_add_quirk) {
565 				flush_command(pbe, opt);
566 			}
567 			opt->quirkname = argv[n + 1];
568 			n++;
569 
570 			opt->got_add_quirk = 1;
571 			opt->got_any++;
572 			break;
573 
574 		case T_REMOVE_QUIRK:
575 			if (opt->got_remove_quirk) {
576 				flush_command(pbe, opt);
577 			}
578 			opt->quirkname = argv[n + 1];
579 			n++;
580 
581 			opt->got_remove_quirk = 1;
582 			opt->got_any++;
583 			break;
584 
585 		case T_ADD_DEVICE_QUIRK:
586 			if (opt->got_add_device_quirk) {
587 				flush_command(pbe, opt);
588 			}
589 			opt->vid = num_id(argv[n + 1], "Vendor ID");
590 			opt->pid = num_id(argv[n + 2], "Product ID");
591 			opt->lo_rev = num_id(argv[n + 3], "Low Revision");
592 			opt->hi_rev = num_id(argv[n + 4], "High Revision");
593 			opt->quirkname = argv[n + 5];
594 			n += 5;
595 
596 			opt->got_add_device_quirk = 1;
597 			opt->got_any++;
598 			break;
599 
600 		case T_REMOVE_DEVICE_QUIRK:
601 			if (opt->got_remove_device_quirk) {
602 				flush_command(pbe, opt);
603 			}
604 			opt->vid = num_id(argv[n + 1], "Vendor ID");
605 			opt->pid = num_id(argv[n + 2], "Product ID");
606 			opt->lo_rev = num_id(argv[n + 3], "Low Revision");
607 			opt->hi_rev = num_id(argv[n + 4], "High Revision");
608 			opt->quirkname = argv[n + 5];
609 			n += 5;
610 			opt->got_remove_device_quirk = 1;
611 			opt->got_any++;
612 			break;
613 
614 		case T_DUMP_QUIRK_NAMES:
615 			if (opt->got_dump_quirk_names)
616 				duplicate_option(argv[n]);
617 			opt->got_dump_quirk_names = 1;
618 			opt->got_any++;
619 			break;
620 
621 		case T_DUMP_DEVICE_QUIRKS:
622 			if (opt->got_dump_device_quirks)
623 				duplicate_option(argv[n]);
624 			opt->got_dump_device_quirks = 1;
625 			opt->got_any++;
626 			break;
627 
628 		case T_SHOW_IFACE_DRIVER:
629 			opt->got_show_iface_driver = 1;
630 			break;
631 
632 		case T_UGEN:
633 			if (opt->got_any) {
634 				/* allow multiple commands on the same line */
635 				flush_command(pbe, opt);
636 			}
637 			ptr = argv[n + 1];
638 
639 			if ((ptr[0] == 'u') &&
640 			    (ptr[1] == 'g') &&
641 			    (ptr[2] == 'e') &&
642 			    (ptr[3] == 'n'))
643 				ptr += 4;
644 
645 			if ((sscanf(ptr, "%d.%d",
646 			    &unit, &addr) != 2) ||
647 			    (unit < 0) || (unit > 65535) ||
648 			    (addr < 0) || (addr > 65535)) {
649 				errx(1, "cannot "
650 				    "parse '%s'", argv[n + 1]);
651 			}
652 			opt->bus = unit;
653 			opt->addr = addr;
654 			opt->got_bus = 1;
655 			opt->got_addr = 1;
656 			n++;
657 			break;
658 
659 		case T_UNIT:
660 			if (opt->got_any) {
661 				/* allow multiple commands on the same line */
662 				flush_command(pbe, opt);
663 			}
664 			opt->bus = num_id(argv[n + 1], "busnum");
665 			opt->got_bus = 1;
666 			n++;
667 			break;
668 		case T_ADDR:
669 			opt->addr = num_id(argv[n + 1], "addr");
670 			opt->got_addr = 1;
671 			n++;
672 			break;
673 		case T_IFACE:
674 			opt->iface = num_id(argv[n + 1], "iface");
675 			opt->got_iface = 1;
676 			n++;
677 			break;
678 		case T_SET_CONFIG:
679 			if (opt->got_set_config)
680 				duplicate_option(argv[n]);
681 			opt->config_index = num_id(argv[n + 1], "cfg_index");
682 			opt->got_set_config = 1;
683 			opt->got_any++;
684 			n++;
685 			break;
686 		case T_SET_ALT:
687 			if (opt->got_set_alt)
688 				duplicate_option(argv[n]);
689 			opt->alt_index = num_id(argv[n + 1], "cfg_index");
690 			opt->got_set_alt = 1;
691 			opt->got_any++;
692 			n++;
693 			break;
694 		case T_SET_TEMPLATE:
695 			if (opt->got_set_template)
696 				duplicate_option(argv[n]);
697 			opt->template = get_int(argv[n + 1]);
698 			opt->got_set_template = 1;
699 			opt->got_any++;
700 			n++;
701 			break;
702 		case T_GET_TEMPLATE:
703 			if (opt->got_get_template)
704 				duplicate_option(argv[n]);
705 			opt->got_get_template = 1;
706 			opt->got_any++;
707 			break;
708 		case T_DUMP_ALL_DESC:
709 			if (opt->got_dump_all_desc)
710 				duplicate_option(argv[n]);
711 			opt->got_dump_all_desc = 1;
712 			opt->got_any++;
713 			break;
714 		case T_DUMP_DEVICE_DESC:
715 			if (opt->got_dump_device_desc)
716 				duplicate_option(argv[n]);
717 			opt->got_dump_device_desc = 1;
718 			opt->got_any++;
719 			break;
720 		case T_DUMP_CURR_CONFIG_DESC:
721 			if (opt->got_dump_curr_config)
722 				duplicate_option(argv[n]);
723 			opt->got_dump_curr_config = 1;
724 			opt->got_any++;
725 			break;
726 		case T_DUMP_ALL_CONFIG_DESC:
727 			if (opt->got_dump_all_config)
728 				duplicate_option(argv[n]);
729 			opt->got_dump_all_config = 1;
730 			opt->got_any++;
731 			break;
732 		case T_DUMP_INFO:
733 			if (opt->got_dump_info)
734 				duplicate_option(argv[n]);
735 			opt->got_dump_info = 1;
736 			opt->got_any++;
737 			break;
738 		case T_DUMP_STRING:
739 			if (opt->got_dump_string)
740 				duplicate_option(argv[n]);
741 			opt->string_index = num_id(argv[n + 1], "str_index");
742 			opt->got_dump_string = 1;
743 			opt->got_any++;
744 			n++;
745 			break;
746 		case T_SUSPEND:
747 			if (opt->got_suspend)
748 				duplicate_option(argv[n]);
749 			opt->got_suspend = 1;
750 			opt->got_any++;
751 			break;
752 		case T_RESUME:
753 			if (opt->got_resume)
754 				duplicate_option(argv[n]);
755 			opt->got_resume = 1;
756 			opt->got_any++;
757 			break;
758 		case T_POWER_OFF:
759 			if (opt->got_power_off)
760 				duplicate_option(argv[n]);
761 			opt->got_power_off = 1;
762 			opt->got_any++;
763 			break;
764 		case T_POWER_SAVE:
765 			if (opt->got_power_save)
766 				duplicate_option(argv[n]);
767 			opt->got_power_save = 1;
768 			opt->got_any++;
769 			break;
770 		case T_POWER_ON:
771 			if (opt->got_power_on)
772 				duplicate_option(argv[n]);
773 			opt->got_power_on = 1;
774 			opt->got_any++;
775 			break;
776 		case T_RESET:
777 			if (opt->got_reset)
778 				duplicate_option(argv[n]);
779 			opt->got_reset = 1;
780 			opt->got_any++;
781 			break;
782 		case T_LIST:
783 			if (opt->got_list)
784 				duplicate_option(argv[n]);
785 			opt->got_list = 1;
786 			opt->got_any++;
787 			break;
788 		case T_DO_REQUEST:
789 			if (opt->got_do_request)
790 				duplicate_option(argv[n]);
791 			LIBUSB20_INIT(LIBUSB20_CONTROL_SETUP, &opt->setup);
792 			opt->setup.bmRequestType = num_id(argv[n + 1], "bmReqTyp");
793 			opt->setup.bRequest = num_id(argv[n + 2], "bReq");
794 			opt->setup.wValue = num_id(argv[n + 3], "wVal");
795 			opt->setup.wIndex = num_id(argv[n + 4], "wIndex");
796 			opt->setup.wLength = num_id(argv[n + 5], "wLen");
797 			if (opt->setup.wLength != 0) {
798 				opt->buffer = malloc(opt->setup.wLength);
799 			} else {
800 				opt->buffer = NULL;
801 			}
802 
803 			n += 5;
804 
805 			if (!(opt->setup.bmRequestType &
806 			    LIBUSB20_ENDPOINT_IN)) {
807 				/* copy in data */
808 				t = (argc - n - 1);
809 				if (t < opt->setup.wLength) {
810 					err(1, "request data missing");
811 				}
812 				t = opt->setup.wLength;
813 				while (t--) {
814 					((uint8_t *)opt->buffer)[t] =
815 					    num_id(argv[n + t + 1], "req_data");
816 				}
817 				n += opt->setup.wLength;
818 			}
819 			opt->got_do_request = 1;
820 			opt->got_any++;
821 			break;
822 		default:
823 			if (n == 1) {
824 				ptr = argv[n];
825 
826 				if ((ptr[0] == 'u') &&
827 				    (ptr[1] == 'g') &&
828 				    (ptr[2] == 'e') &&
829 				    (ptr[3] == 'n'))
830 					ptr += 4;
831 
832 				if ((sscanf(ptr, "%d.%d",
833 				    &unit, &addr) != 2) ||
834 				    (unit < 0) || (unit > 65535) ||
835 				    (addr < 0) || (addr > 65535)) {
836 					usage();
837 					break;
838 				}
839 
840 				opt->bus = unit;
841 				opt->addr = addr;
842 				opt->got_bus = 1;
843 				opt->got_addr = 1;
844 				break;
845 			}
846 			usage();
847 			break;
848 		}
849 	}
850 	if (opt->got_any) {
851 		/* flush out last command */
852 		flush_command(pbe, opt);
853 	} else {
854 		/* list all the devices */
855 		opt->got_list = 1;
856 		opt->got_any++;
857 		flush_command(pbe, opt);
858 	}
859 	/* release data */
860 	libusb20_be_free(pbe);
861 
862 	return (0);
863 }
864