usr.sbin/usbconfig/usbconfig.c

   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 }