xref: /freebsd/usr.sbin/usbconfig/usbconfig.c (revision 63812bb5)
1 /* $FreeBSD$ */
2 /*-
3  * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <stdint.h>
30 #include <err.h>
31 #include <string.h>
32 #include <pwd.h>
33 #include <grp.h>
34 #include <errno.h>
35 #include <ctype.h>
36 
37 #include <libusb20_desc.h>
38 #include <libusb20.h>
39 
40 #include "dump.h"
41 
42 struct options {
43 	const char *quirkname;
44 	void   *buffer;
45 	gid_t	gid;
46 	uid_t	uid;
47 	mode_t	mode;
48 	uint32_t got_any;
49 	struct LIBUSB20_CONTROL_SETUP_DECODED setup;
50 	uint16_t bus;
51 	uint16_t addr;
52 	uint16_t iface;
53 	uint16_t vid;
54 	uint16_t pid;
55 	uint16_t lo_rev;		/* inclusive */
56 	uint16_t hi_rev;		/* inclusive */
57 	uint8_t	string_index;
58 	uint8_t	config_index;
59 	uint8_t	alt_index;
60 	uint8_t	got_list:1;
61 	uint8_t	got_bus:1;
62 	uint8_t	got_addr:1;
63 	uint8_t	got_iface:1;
64 	uint8_t	got_set_config:1;
65 	uint8_t	got_set_alt:1;
66 	uint8_t	got_set_owner:1;
67 	uint8_t	got_set_perm:1;
68 	uint8_t	got_suspend:1;
69 	uint8_t	got_resume:1;
70 	uint8_t	got_reset:1;
71 	uint8_t	got_power_off:1;
72 	uint8_t	got_power_save:1;
73 	uint8_t	got_power_on:1;
74 	uint8_t	got_dump_device_quirks:1;
75 	uint8_t	got_dump_quirk_names:1;
76 	uint8_t	got_dump_device_desc:1;
77 	uint8_t	got_dump_curr_config:1;
78 	uint8_t	got_dump_all_config:1;
79 	uint8_t	got_dump_info:1;
80 	uint8_t	got_dump_access:1;
81 	uint8_t	got_remove_device_quirk:1;
82 	uint8_t	got_add_device_quirk:1;
83 	uint8_t	got_dump_string:1;
84 	uint8_t	got_do_request:1;
85 };
86 
87 struct token {
88 	const char *name;
89 	uint8_t	value;
90 	uint8_t	narg;
91 };
92 
93 enum {
94 	T_UNIT,
95 	T_ADDR,
96 	T_IFACE,
97 	T_SET_CONFIG,
98 	T_SET_ALT,
99 	T_SET_OWNER,
100 	T_SET_PERM,
101 	T_ADD_DEVICE_QUIRK,
102 	T_REMOVE_DEVICE_QUIRK,
103 	T_DUMP_QUIRK_NAMES,
104 	T_DUMP_DEVICE_QUIRKS,
105 	T_DUMP_DEVICE_DESC,
106 	T_DUMP_CURR_CONFIG_DESC,
107 	T_DUMP_ALL_CONFIG_DESC,
108 	T_DUMP_STRING,
109 	T_DUMP_ACCESS,
110 	T_DUMP_INFO,
111 	T_SUSPEND,
112 	T_RESUME,
113 	T_POWER_OFF,
114 	T_POWER_SAVE,
115 	T_POWER_ON,
116 	T_RESET,
117 	T_LIST,
118 	T_DO_REQUEST,
119 };
120 
121 static struct options options;
122 
123 static const struct token token[] = {
124 	{"-u", T_UNIT, 1},
125 	{"-a", T_ADDR, 1},
126 	{"-i", T_IFACE, 1},
127 	{"set_config", T_SET_CONFIG, 1},
128 	{"set_alt", T_SET_ALT, 1},
129 	{"set_owner", T_SET_OWNER, 1},
130 	{"set_perm", T_SET_PERM, 1},
131 	{"add_dev_quirk_vplh", T_ADD_DEVICE_QUIRK, 5},
132 	{"remove_dev_quirk_vplh", T_REMOVE_DEVICE_QUIRK, 5},
133 	{"dump_quirk_names", T_DUMP_QUIRK_NAMES, 0},
134 	{"dump_device_quirks", T_DUMP_DEVICE_QUIRKS, 0},
135 	{"dump_device_desc", T_DUMP_DEVICE_DESC, 0},
136 	{"dump_curr_config_desc", T_DUMP_CURR_CONFIG_DESC, 0},
137 	{"dump_all_config_desc", T_DUMP_ALL_CONFIG_DESC, 0},
138 	{"dump_string", T_DUMP_STRING, 1},
139 	{"dump_access", T_DUMP_ACCESS, 0},
140 	{"dump_info", T_DUMP_INFO, 0},
141 	{"suspend", T_SUSPEND, 0},
142 	{"resume", T_RESUME, 0},
143 	{"power_off", T_POWER_OFF, 0},
144 	{"power_save", T_POWER_SAVE, 0},
145 	{"power_on", T_POWER_ON, 0},
146 	{"reset", T_RESET, 0},
147 	{"list", T_LIST, 0},
148 	{"do_request", T_DO_REQUEST, 5},
149 };
150 
151 static void
152 be_dev_remove_quirk(struct libusb20_backend *pbe,
153     uint16_t vid, uint16_t pid, uint16_t lorev, uint16_t hirev,
154     const char *str)
155 {
156 	struct libusb20_quirk q;
157 	int error;
158 
159 	memset(&q, 0, sizeof(q));
160 
161 	q.vid = vid;
162 	q.pid = pid;
163 	q.bcdDeviceLow = lorev;
164 	q.bcdDeviceHigh = hirev;
165 	strlcpy(q.quirkname, str, sizeof(q.quirkname));
166 
167 	error = libusb20_be_remove_dev_quirk(pbe, &q);
168 	if (error) {
169 		printf("Removing quirk '%s' failed, continuing.\n", str);
170 	}
171 	return;
172 }
173 
174 static void
175 be_dev_add_quirk(struct libusb20_backend *pbe,
176     uint16_t vid, uint16_t pid, uint16_t lorev, uint16_t hirev,
177     const char *str)
178 {
179 	struct libusb20_quirk q;
180 	int error;
181 
182 	memset(&q, 0, sizeof(q));
183 
184 	q.vid = vid;
185 	q.pid = pid;
186 	q.bcdDeviceLow = lorev;
187 	q.bcdDeviceHigh = hirev;
188 	strlcpy(q.quirkname, str, sizeof(q.quirkname));
189 
190 	error = libusb20_be_add_dev_quirk(pbe, &q);
191 	if (error) {
192 		printf("Adding quirk '%s' failed, continuing.\n", str);
193 	}
194 	return;
195 }
196 
197 static uint8_t
198 get_token(const char *str, uint8_t narg)
199 {
200 	uint8_t n;
201 
202 	for (n = 0; n != (sizeof(token) / sizeof(token[0])); n++) {
203 		if (strcasecmp(str, token[n].name) == 0) {
204 			if (token[n].narg > narg) {
205 				/* too few arguments */
206 				break;
207 			}
208 			return (token[n].value);
209 		}
210 	}
211 	return (0 - 1);
212 }
213 
214 static uid_t
215 num_id(const char *name, const char *type)
216 {
217 	uid_t val;
218 	char *ep;
219 
220 	errno = 0;
221 	val = strtoul(name, &ep, 0);
222 	if (errno) {
223 		err(1, "%s", name);
224 	}
225 	if (*ep != '\0') {
226 		errx(1, "%s: illegal %s name", name, type);
227 	}
228 	return (val);
229 }
230 
231 static gid_t
232 a_gid(const char *s)
233 {
234 	struct group *gr;
235 
236 	if (*s == '\0') {
237 		/* empty group ID */
238 		return ((gid_t)-1);
239 	}
240 	return ((gr = getgrnam(s)) ? gr->gr_gid : num_id(s, "group"));
241 }
242 
243 static uid_t
244 a_uid(const char *s)
245 {
246 	struct passwd *pw;
247 
248 	if (*s == '\0') {
249 		/* empty user ID */
250 		return ((uid_t)-1);
251 	}
252 	return ((pw = getpwnam(s)) ? pw->pw_uid : num_id(s, "user"));
253 }
254 
255 static mode_t
256 a_mode(const char *s)
257 {
258 	uint16_t val;
259 	char *ep;
260 
261 	errno = 0;
262 	val = strtoul(s, &ep, 8);
263 	if (errno) {
264 		err(1, "%s", s);
265 	}
266 	if (*ep != '\0') {
267 		errx(1, "illegal permissions: %s", s);
268 	}
269 	return val;
270 }
271 
272 static void
273 usage(void)
274 {
275 	printf(""
276 	    "usbconfig - configure the USB subsystem" "\n"
277 	    "usage: usbconfig -u <busnum> -a <devaddr> -i <ifaceindex> [cmds...]" "\n"
278 	    "commands:" "\n"
279 	    "  set_config <cfg_index>" "\n"
280 	    "  set_alt <alt_index>" "\n"
281 	    "  set_owner <user:group>" "\n"
282 	    "  set_perm <mode>" "\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 	    "  dump_quirk_names" "\n"
286 	    "  dump_device_quirks" "\n"
287 	    "  dump_device_desc" "\n"
288 	    "  dump_curr_config_desc" "\n"
289 	    "  dump_all_config_desc" "\n"
290 	    "  dump_string <index>" "\n"
291 	    "  dump_access" "\n"
292 	    "  dump_info" "\n"
293 	    "  suspend" "\n"
294 	    "  resume" "\n"
295 	    "  power_off" "\n"
296 	    "  power_save" "\n"
297 	    "  power_on" "\n"
298 	    "  reset" "\n"
299 	    "  list" "\n"
300 	    "  do_request <bmReqTyp> <bReq> <wVal> <wIdx> <wLen> <data...>" "\n"
301 	);
302 	exit(1);
303 }
304 
305 static void
306 reset_options(struct options *opt)
307 {
308 	if (opt->buffer)
309 		free(opt->buffer);
310 	memset(opt, 0, sizeof(*opt));
311 	return;
312 }
313 
314 static void
315 flush_command(struct libusb20_backend *pbe, struct options *opt)
316 {
317 	struct libusb20_device *pdev = NULL;
318 	uint32_t matches = 0;
319 	uint8_t dump_any;
320 
321 	/* check for invalid option combinations */
322 	if ((opt->got_suspend +
323 	    opt->got_resume +
324 	    opt->got_reset +
325 	    opt->got_set_config +
326 	    opt->got_set_alt +
327 	    opt->got_power_save +
328 	    opt->got_power_on +
329 	    opt->got_power_off) > 1) {
330 		err(1, "can only specify one of 'set_config', "
331 		    "'set_alt', 'reset', 'suspend', 'resume', "
332 		    "'power_save', 'power_on' and 'power_off' "
333 		    "at the same time!");
334 	}
335 	if (opt->got_dump_access) {
336 		opt->got_any--;
337 		dump_be_access(pbe);
338 	}
339 	if (opt->got_dump_quirk_names) {
340 		opt->got_any--;
341 		dump_be_quirk_names(pbe);
342 	}
343 	if (opt->got_dump_device_quirks) {
344 		opt->got_any--;
345 		dump_be_dev_quirks(pbe);
346 	}
347 	if (opt->got_remove_device_quirk) {
348 		opt->got_any--;
349 		be_dev_remove_quirk(pbe,
350 		    opt->vid, opt->pid, opt->lo_rev, opt->hi_rev, opt->quirkname);
351 	}
352 	if (opt->got_add_device_quirk) {
353 		opt->got_any--;
354 		be_dev_add_quirk(pbe,
355 		    opt->vid, opt->pid, opt->lo_rev, opt->hi_rev, opt->quirkname);
356 	}
357 	if (opt->got_any == 0) {
358 		/*
359 		 * do not scan through all the devices if there are no valid
360 		 * options
361 		 */
362 		goto done;
363 	}
364 	while ((pdev = libusb20_be_device_foreach(pbe, pdev))) {
365 
366 		if (opt->got_bus &&
367 		    (libusb20_dev_get_bus_number(pdev) != opt->bus)) {
368 			continue;
369 		}
370 		if (opt->got_addr &&
371 		    (libusb20_dev_get_address(pdev) != opt->addr)) {
372 			continue;
373 		}
374 		matches++;
375 
376 		/* do owner and permissions first */
377 
378 		if (opt->got_bus && opt->got_addr && opt->got_iface) {
379 			if (opt->got_set_owner) {
380 				if (libusb20_dev_set_iface_owner(pdev,
381 				    opt->iface, opt->uid, opt->gid)) {
382 					err(1, "setting owner and group failed\n");
383 				}
384 			}
385 			if (opt->got_set_perm) {
386 				if (libusb20_dev_set_iface_perm(pdev,
387 				    opt->iface, opt->mode)) {
388 					err(1, "setting mode failed\n");
389 				}
390 			}
391 		} else if (opt->got_bus && opt->got_addr) {
392 			if (opt->got_set_owner) {
393 				if (libusb20_dev_set_owner(pdev,
394 				    opt->uid, opt->gid)) {
395 					err(1, "setting owner and group failed\n");
396 				}
397 			}
398 			if (opt->got_set_perm) {
399 				if (libusb20_dev_set_perm(pdev,
400 				    opt->mode)) {
401 					err(1, "setting mode failed\n");
402 				}
403 			}
404 		} else if (opt->got_bus) {
405 			if (opt->got_set_owner) {
406 				if (libusb20_bus_set_owner(pbe, opt->bus,
407 				    opt->uid, opt->gid)) {
408 					err(1, "setting owner and group failed\n");
409 				}
410 			}
411 			if (opt->got_set_perm) {
412 				if (libusb20_bus_set_perm(pbe, opt->bus,
413 				    opt->mode)) {
414 					err(1, "setting mode failed\n");
415 				}
416 			}
417 		} else {
418 			if (opt->got_set_owner) {
419 				if (libusb20_be_set_owner(pbe,
420 				    opt->uid, opt->gid)) {
421 					err(1, "setting owner and group failed\n");
422 				}
423 			}
424 			if (opt->got_set_perm) {
425 				if (libusb20_be_set_perm(pbe,
426 				    opt->mode)) {
427 					err(1, "setting mode failed\n");
428 				}
429 			}
430 		}
431 
432 		if (libusb20_dev_open(pdev, 0)) {
433 			err(1, "could not open device");
434 		}
435 		if (opt->got_dump_string) {
436 			char *pbuf;
437 
438 			pbuf = malloc(256);
439 			if (pbuf == NULL) {
440 				err(1, "out of memory");
441 			}
442 			if (libusb20_dev_req_string_simple_sync(pdev,
443 			    opt->string_index, pbuf, 256)) {
444 				printf("STRING_0x%02x = <read error>\n",
445 				    opt->string_index);
446 			} else {
447 				printf("STRING_0x%02x = <%s>\n",
448 				    opt->string_index, pbuf);
449 			}
450 			free(pbuf);
451 		}
452 		if (opt->got_do_request) {
453 			uint16_t actlen;
454 			uint16_t t;
455 
456 			if (libusb20_dev_request_sync(pdev, &opt->setup,
457 			    opt->buffer, &actlen, 5000 /* 5 seconds */ , 0)) {
458 				printf("REQUEST = <ERROR>\n");
459 			} else if (!(opt->setup.bmRequestType &
460 			    LIBUSB20_ENDPOINT_IN)) {
461 				printf("REQUEST = <OK>\n");
462 			} else {
463 				t = actlen;
464 				printf("REQUEST = <");
465 				for (t = 0; t != actlen; t++) {
466 					printf("0x%02x%s",
467 					    ((uint8_t *)opt->buffer)[t],
468 					    (t == (actlen - 1)) ? "" : " ");
469 				}
470 				printf("><");
471 				for (t = 0; t != actlen; t++) {
472 					char c;
473 
474 					c = ((uint8_t *)opt->buffer)[t];
475 					if ((c != '<') &&
476 					    (c != '>') && isprint(c)) {
477 						putchar(c);
478 					}
479 				}
480 				printf(">\n");
481 			}
482 		}
483 		if (opt->got_set_config) {
484 			if (libusb20_dev_set_config_index(pdev,
485 			    opt->config_index)) {
486 				err(1, "could not set config index");
487 			}
488 		}
489 		if (opt->got_set_alt) {
490 			if (libusb20_dev_set_alt_index(pdev, opt->iface,
491 			    opt->alt_index)) {
492 				err(1, "could not set alternate setting");
493 			}
494 		}
495 		if (opt->got_reset) {
496 			if (libusb20_dev_reset(pdev)) {
497 				err(1, "could not reset device");
498 			}
499 		}
500 		if (opt->got_suspend) {
501 			if (libusb20_dev_set_power_mode(pdev,
502 			    LIBUSB20_POWER_SUSPEND)) {
503 				err(1, "could not set suspend");
504 			}
505 		}
506 		if (opt->got_resume) {
507 			if (libusb20_dev_set_power_mode(pdev,
508 			    LIBUSB20_POWER_RESUME)) {
509 				err(1, "could not set resume");
510 			}
511 		}
512 		if (opt->got_power_off) {
513 			if (libusb20_dev_set_power_mode(pdev,
514 			    LIBUSB20_POWER_OFF)) {
515 				err(1, "could not set power OFF");
516 			}
517 		}
518 		if (opt->got_power_save) {
519 			if (libusb20_dev_set_power_mode(pdev,
520 			    LIBUSB20_POWER_SAVE)) {
521 				err(1, "could not set power SAVE");
522 			}
523 		}
524 		if (opt->got_power_on) {
525 			if (libusb20_dev_set_power_mode(pdev,
526 			    LIBUSB20_POWER_ON)) {
527 				err(1, "could not set power ON");
528 			}
529 		}
530 		dump_any =
531 		    (opt->got_dump_device_desc ||
532 		    opt->got_dump_curr_config ||
533 		    opt->got_dump_all_config ||
534 		    opt->got_dump_info ||
535 		    opt->got_dump_access);
536 
537 		if (opt->got_list || dump_any) {
538 			dump_device_info(pdev);
539 		}
540 		if (opt->got_dump_access) {
541 			printf("\n");
542 			dump_device_access(pdev, opt->got_iface ?
543 			    opt->iface : 0xFF);
544 		}
545 		if (opt->got_dump_device_desc) {
546 			printf("\n");
547 			dump_device_desc(pdev);
548 		}
549 		if (opt->got_dump_all_config) {
550 			printf("\n");
551 			dump_config(pdev, 1);
552 		} else if (opt->got_dump_curr_config) {
553 			printf("\n");
554 			dump_config(pdev, 0);
555 		}
556 		if (dump_any) {
557 			printf("\n");
558 		}
559 		if (libusb20_dev_close(pdev)) {
560 			err(1, "could not close device");
561 		}
562 	}
563 
564 	if (matches == 0) {
565 		printf("No device match or lack of permissions.\n");
566 	}
567 done:
568 	reset_options(opt);
569 
570 	return;
571 }
572 
573 int
574 main(int argc, char **argv)
575 {
576 	struct libusb20_backend *pbe;
577 	struct options *opt = &options;
578 	char *cp;
579 	int n;
580 	int t;
581 
582 	if (argc < 1) {
583 		usage();
584 	}
585 	pbe = libusb20_be_alloc_default();
586 	if (pbe == NULL)
587 		err(1, "could not access USB backend\n");
588 
589 	for (n = 1; n != argc; n++) {
590 
591 		/* get number of additional options */
592 		t = (argc - n - 1);
593 		if (t > 255)
594 			t = 255;
595 		switch (get_token(argv[n], t)) {
596 		case T_ADD_DEVICE_QUIRK:
597 			if (opt->got_add_device_quirk) {
598 				flush_command(pbe, opt);
599 			}
600 			opt->vid = num_id(argv[n + 1], "Vendor ID");
601 			opt->pid = num_id(argv[n + 2], "Product ID");
602 			opt->lo_rev = num_id(argv[n + 3], "Low Revision");
603 			opt->hi_rev = num_id(argv[n + 4], "High Revision");
604 			opt->quirkname = argv[n + 5];
605 			n += 5;
606 
607 			opt->got_add_device_quirk = 1;
608 			opt->got_any++;
609 			break;
610 
611 		case T_REMOVE_DEVICE_QUIRK:
612 			if (opt->got_remove_device_quirk) {
613 				flush_command(pbe, opt);
614 			}
615 			opt->vid = num_id(argv[n + 1], "Vendor ID");
616 			opt->pid = num_id(argv[n + 2], "Product ID");
617 			opt->lo_rev = num_id(argv[n + 3], "Low Revision");
618 			opt->hi_rev = num_id(argv[n + 4], "High Revision");
619 			opt->quirkname = argv[n + 5];
620 			n += 5;
621 			opt->got_remove_device_quirk = 1;
622 			opt->got_any++;
623 			break;
624 
625 		case T_DUMP_QUIRK_NAMES:
626 			opt->got_dump_quirk_names = 1;
627 			opt->got_any++;
628 			break;
629 
630 		case T_DUMP_DEVICE_QUIRKS:
631 			opt->got_dump_device_quirks = 1;
632 			opt->got_any++;
633 			break;
634 
635 		case T_UNIT:
636 			if (opt->got_any) {
637 				/* allow multiple commands on the same line */
638 				flush_command(pbe, opt);
639 			}
640 			opt->bus = num_id(argv[n + 1], "busnum");
641 			opt->got_bus = 1;
642 			n++;
643 			break;
644 		case T_ADDR:
645 			opt->addr = num_id(argv[n + 1], "addr");
646 			opt->got_addr = 1;
647 			n++;
648 			break;
649 		case T_IFACE:
650 			opt->iface = num_id(argv[n + 1], "iface");
651 			opt->got_iface = 1;
652 			n++;
653 			break;
654 		case T_SET_CONFIG:
655 			opt->config_index = num_id(argv[n + 1], "cfg_index");
656 			opt->got_set_config = 1;
657 			opt->got_any++;
658 			n++;
659 			break;
660 		case T_SET_ALT:
661 			opt->alt_index = num_id(argv[n + 1], "cfg_index");
662 			opt->got_set_alt = 1;
663 			opt->got_any++;
664 			n++;
665 			break;
666 		case T_SET_OWNER:
667 			cp = argv[n + 1];
668 			cp = strchr(cp, ':');
669 			if (cp == NULL) {
670 				err(1, "missing colon in '%s'!", argv[n + 1]);
671 			}
672 			*(cp++) = '\0';
673 			opt->gid = a_gid(cp);
674 			opt->uid = a_uid(argv[n + 1]);
675 			opt->got_set_owner = 1;
676 			opt->got_any++;
677 			n++;
678 			break;
679 		case T_SET_PERM:
680 			opt->mode = a_mode(argv[n + 1]);
681 			opt->got_set_perm = 1;
682 			opt->got_any++;
683 			n++;
684 			break;
685 		case T_DUMP_DEVICE_DESC:
686 			opt->got_dump_device_desc = 1;
687 			opt->got_any++;
688 			break;
689 		case T_DUMP_CURR_CONFIG_DESC:
690 			opt->got_dump_curr_config = 1;
691 			opt->got_any++;
692 			break;
693 		case T_DUMP_ALL_CONFIG_DESC:
694 			opt->got_dump_all_config = 1;
695 			opt->got_any++;
696 			break;
697 		case T_DUMP_INFO:
698 			opt->got_dump_info = 1;
699 			opt->got_any++;
700 			break;
701 		case T_DUMP_STRING:
702 			if (opt->got_dump_string) {
703 				flush_command(pbe, opt);
704 			}
705 			opt->string_index = num_id(argv[n + 1], "str_index");
706 			opt->got_dump_string = 1;
707 			opt->got_any++;
708 			n++;
709 			break;
710 		case T_DUMP_ACCESS:
711 			opt->got_dump_access = 1;
712 			opt->got_any += 2;
713 			break;
714 		case T_SUSPEND:
715 			opt->got_suspend = 1;
716 			opt->got_any++;
717 			break;
718 		case T_RESUME:
719 			opt->got_resume = 1;
720 			opt->got_any++;
721 			break;
722 		case T_POWER_OFF:
723 			opt->got_power_off = 1;
724 			opt->got_any++;
725 			break;
726 		case T_POWER_SAVE:
727 			opt->got_power_save = 1;
728 			opt->got_any++;
729 			break;
730 		case T_POWER_ON:
731 			opt->got_power_on = 1;
732 			opt->got_any++;
733 			break;
734 		case T_RESET:
735 			opt->got_reset = 1;
736 			opt->got_any++;
737 			break;
738 		case T_LIST:
739 			opt->got_list = 1;
740 			opt->got_any++;
741 			break;
742 		case T_DO_REQUEST:
743 			if (opt->got_do_request) {
744 				flush_command(pbe, opt);
745 			}
746 			LIBUSB20_INIT(LIBUSB20_CONTROL_SETUP, &opt->setup);
747 			opt->setup.bmRequestType = num_id(argv[n + 1], "bmReqTyp");
748 			opt->setup.bRequest = num_id(argv[n + 2], "bReq");
749 			opt->setup.wValue = num_id(argv[n + 3], "wVal");
750 			opt->setup.wIndex = num_id(argv[n + 4], "wIndex");
751 			opt->setup.wLength = num_id(argv[n + 5], "wLen");
752 			if (opt->setup.wLength != 0) {
753 				opt->buffer = malloc(opt->setup.wLength);
754 			} else {
755 				opt->buffer = NULL;
756 			}
757 
758 			n += 5;
759 
760 			if (!(opt->setup.bmRequestType &
761 			    LIBUSB20_ENDPOINT_IN)) {
762 				/* copy in data */
763 				t = (argc - n - 1);
764 				if (t < opt->setup.wLength) {
765 					err(1, "request data missing");
766 				}
767 				t = opt->setup.wLength;
768 				while (t--) {
769 					((uint8_t *)opt->buffer)[t] =
770 					    num_id(argv[n + t + 1], "req_data");
771 				}
772 				n += opt->setup.wLength;
773 			}
774 			opt->got_do_request = 1;
775 			opt->got_any++;
776 			break;
777 		default:
778 			usage();
779 			break;
780 		}
781 	}
782 	if (opt->got_any) {
783 		/* flush out last command */
784 		flush_command(pbe, opt);
785 	} else {
786 		/* list all the devices */
787 		opt->got_list = 1;
788 		opt->got_any++;
789 		flush_command(pbe, opt);
790 	}
791 	/* release data */
792 	libusb20_be_free(pbe);
793 
794 	return (0);
795 }
796