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| 1 /* | |
| 2 * libusb example program to manipulate U.are.U 4000B fingerprint scanner. | |
| 3 * Copyright (C) 2007 Daniel Drake <dsd@gentoo.org> | |
| 4 * | |
| 5 * Basic image capture program only, does not consider the powerup quirks or | |
| 6 * the fact that image encryption may be enabled. Not expected to work | |
| 7 * flawlessly all of the time. | |
| 8 * | |
| 9 * This library is free software; you can redistribute it and/or | |
| 10 * modify it under the terms of the GNU Lesser General Public | |
| 11 * License as published by the Free Software Foundation; either | |
| 12 * version 2.1 of the License, or (at your option) any later version. | |
| 13 * | |
| 14 * This library is distributed in the hope that it will be useful, | |
| 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 17 * Lesser General Public License for more details. | |
| 18 * | |
| 19 * You should have received a copy of the GNU Lesser General Public | |
| 20 * License along with this library; if not, write to the Free Software | |
| 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 22 */ | |
| 23 | |
| 24 #include <errno.h> | |
| 25 #include <signal.h> | |
| 26 #include <string.h> | |
| 27 #include <stdio.h> | |
| 28 #include <stdlib.h> | |
| 29 | |
| 30 #include <libusb.h> | |
| 31 | |
| 32 #define EP_INTR (1 | LIBUSB_ENDPOINT_IN) | |
| 33 #define EP_DATA (2 | LIBUSB_ENDPOINT_IN) | |
| 34 #define CTRL_IN (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN
) | |
| 35 #define CTRL_OUT (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OU
T) | |
| 36 #define USB_RQ 0x04 | |
| 37 #define INTR_LENGTH 64 | |
| 38 | |
| 39 enum { | |
| 40 MODE_INIT = 0x00, | |
| 41 MODE_AWAIT_FINGER_ON = 0x10, | |
| 42 MODE_AWAIT_FINGER_OFF = 0x12, | |
| 43 MODE_CAPTURE = 0x20, | |
| 44 MODE_SHUT_UP = 0x30, | |
| 45 MODE_READY = 0x80, | |
| 46 }; | |
| 47 | |
| 48 static int next_state(void); | |
| 49 | |
| 50 enum { | |
| 51 STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON = 1, | |
| 52 STATE_AWAIT_IRQ_FINGER_DETECTED, | |
| 53 STATE_AWAIT_MODE_CHANGE_CAPTURE, | |
| 54 STATE_AWAIT_IMAGE, | |
| 55 STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF, | |
| 56 STATE_AWAIT_IRQ_FINGER_REMOVED, | |
| 57 }; | |
| 58 | |
| 59 static int state = 0; | |
| 60 static struct libusb_device_handle *devh = NULL; | |
| 61 static unsigned char imgbuf[0x1b340]; | |
| 62 static unsigned char irqbuf[INTR_LENGTH]; | |
| 63 static struct libusb_transfer *img_transfer = NULL; | |
| 64 static struct libusb_transfer *irq_transfer = NULL; | |
| 65 static int img_idx = 0; | |
| 66 static int do_exit = 0; | |
| 67 | |
| 68 static int find_dpfp_device(void) | |
| 69 { | |
| 70 devh = libusb_open_device_with_vid_pid(NULL, 0x05ba, 0x000a); | |
| 71 return devh ? 0 : -EIO; | |
| 72 } | |
| 73 | |
| 74 static int print_f0_data(void) | |
| 75 { | |
| 76 unsigned char data[0x10]; | |
| 77 int r; | |
| 78 unsigned int i; | |
| 79 | |
| 80 r = libusb_control_transfer(devh, CTRL_IN, USB_RQ, 0xf0, 0, data, | |
| 81 sizeof(data), 0); | |
| 82 if (r < 0) { | |
| 83 fprintf(stderr, "F0 error %d\n", r); | |
| 84 return r; | |
| 85 } | |
| 86 if ((unsigned int) r < sizeof(data)) { | |
| 87 fprintf(stderr, "short read (%d)\n", r); | |
| 88 return -1; | |
| 89 } | |
| 90 | |
| 91 printf("F0 data:"); | |
| 92 for (i = 0; i < sizeof(data); i++) | |
| 93 printf("%02x ", data[i]); | |
| 94 printf("\n"); | |
| 95 return 0; | |
| 96 } | |
| 97 | |
| 98 static int get_hwstat(unsigned char *status) | |
| 99 { | |
| 100 int r; | |
| 101 | |
| 102 r = libusb_control_transfer(devh, CTRL_IN, USB_RQ, 0x07, 0, status, 1, 0
); | |
| 103 if (r < 0) { | |
| 104 fprintf(stderr, "read hwstat error %d\n", r); | |
| 105 return r; | |
| 106 } | |
| 107 if ((unsigned int) r < 1) { | |
| 108 fprintf(stderr, "short read (%d)\n", r); | |
| 109 return -1; | |
| 110 } | |
| 111 | |
| 112 printf("hwstat reads %02x\n", *status); | |
| 113 return 0; | |
| 114 } | |
| 115 | |
| 116 static int set_hwstat(unsigned char data) | |
| 117 { | |
| 118 int r; | |
| 119 | |
| 120 printf("set hwstat to %02x\n", data); | |
| 121 r = libusb_control_transfer(devh, CTRL_OUT, USB_RQ, 0x07, 0, &data, 1, 0
); | |
| 122 if (r < 0) { | |
| 123 fprintf(stderr, "set hwstat error %d\n", r); | |
| 124 return r; | |
| 125 } | |
| 126 if ((unsigned int) r < 1) { | |
| 127 fprintf(stderr, "short write (%d)", r); | |
| 128 return -1; | |
| 129 } | |
| 130 | |
| 131 return 0; | |
| 132 } | |
| 133 | |
| 134 static int set_mode(unsigned char data) | |
| 135 { | |
| 136 int r; | |
| 137 printf("set mode %02x\n", data); | |
| 138 | |
| 139 r = libusb_control_transfer(devh, CTRL_OUT, USB_RQ, 0x4e, 0, &data, 1, 0
); | |
| 140 if (r < 0) { | |
| 141 fprintf(stderr, "set mode error %d\n", r); | |
| 142 return r; | |
| 143 } | |
| 144 if ((unsigned int) r < 1) { | |
| 145 fprintf(stderr, "short write (%d)", r); | |
| 146 return -1; | |
| 147 } | |
| 148 | |
| 149 return 0; | |
| 150 } | |
| 151 | |
| 152 static void LIBUSB_CALL cb_mode_changed(struct libusb_transfer *transfer) | |
| 153 { | |
| 154 if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { | |
| 155 fprintf(stderr, "mode change transfer not completed!\n"); | |
| 156 do_exit = 2; | |
| 157 } | |
| 158 | |
| 159 printf("async cb_mode_changed length=%d actual_length=%d\n", | |
| 160 transfer->length, transfer->actual_length); | |
| 161 if (next_state() < 0) | |
| 162 do_exit = 2; | |
| 163 } | |
| 164 | |
| 165 static int set_mode_async(unsigned char data) | |
| 166 { | |
| 167 unsigned char *buf = malloc(LIBUSB_CONTROL_SETUP_SIZE + 1); | |
| 168 struct libusb_transfer *transfer; | |
| 169 | |
| 170 if (!buf) | |
| 171 return -ENOMEM; | |
| 172 | |
| 173 transfer = libusb_alloc_transfer(0); | |
| 174 if (!transfer) { | |
| 175 free(buf); | |
| 176 return -ENOMEM; | |
| 177 } | |
| 178 | |
| 179 printf("async set mode %02x\n", data); | |
| 180 libusb_fill_control_setup(buf, CTRL_OUT, USB_RQ, 0x4e, 0, 1); | |
| 181 buf[LIBUSB_CONTROL_SETUP_SIZE] = data; | |
| 182 libusb_fill_control_transfer(transfer, devh, buf, cb_mode_changed, NULL, | |
| 183 1000); | |
| 184 | |
| 185 transfer->flags = LIBUSB_TRANSFER_SHORT_NOT_OK | |
| 186 | LIBUSB_TRANSFER_FREE_BUFFER | LIBUSB_TRANSFER_FREE_TRANSFER; | |
| 187 return libusb_submit_transfer(transfer); | |
| 188 } | |
| 189 | |
| 190 static int do_sync_intr(unsigned char *data) | |
| 191 { | |
| 192 int r; | |
| 193 int transferred; | |
| 194 | |
| 195 r = libusb_interrupt_transfer(devh, EP_INTR, data, INTR_LENGTH, | |
| 196 &transferred, 1000); | |
| 197 if (r < 0) { | |
| 198 fprintf(stderr, "intr error %d\n", r); | |
| 199 return r; | |
| 200 } | |
| 201 if (transferred < INTR_LENGTH) { | |
| 202 fprintf(stderr, "short read (%d)\n", r); | |
| 203 return -1; | |
| 204 } | |
| 205 | |
| 206 printf("recv interrupt %04x\n", *((uint16_t *) data)); | |
| 207 return 0; | |
| 208 } | |
| 209 | |
| 210 static int sync_intr(unsigned char type) | |
| 211 { | |
| 212 int r; | |
| 213 unsigned char data[INTR_LENGTH]; | |
| 214 | |
| 215 while (1) { | |
| 216 r = do_sync_intr(data); | |
| 217 if (r < 0) | |
| 218 return r; | |
| 219 if (data[0] == type) | |
| 220 return 0; | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 static int save_to_file(unsigned char *data) | |
| 225 { | |
| 226 FILE *fd; | |
| 227 char filename[64]; | |
| 228 | |
| 229 sprintf(filename, "finger%d.pgm", img_idx++); | |
| 230 fd = fopen(filename, "w"); | |
| 231 if (!fd) | |
| 232 return -1; | |
| 233 | |
| 234 fputs("P5 384 289 255 ", fd); | |
| 235 (void) fwrite(data + 64, 1, 384*289, fd); | |
| 236 fclose(fd); | |
| 237 printf("saved image to %s\n", filename); | |
| 238 return 0; | |
| 239 } | |
| 240 | |
| 241 static int next_state(void) | |
| 242 { | |
| 243 int r = 0; | |
| 244 printf("old state: %d\n", state); | |
| 245 switch (state) { | |
| 246 case STATE_AWAIT_IRQ_FINGER_REMOVED: | |
| 247 state = STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON; | |
| 248 r = set_mode_async(MODE_AWAIT_FINGER_ON); | |
| 249 break; | |
| 250 case STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON: | |
| 251 state = STATE_AWAIT_IRQ_FINGER_DETECTED; | |
| 252 break; | |
| 253 case STATE_AWAIT_IRQ_FINGER_DETECTED: | |
| 254 state = STATE_AWAIT_MODE_CHANGE_CAPTURE; | |
| 255 r = set_mode_async(MODE_CAPTURE); | |
| 256 break; | |
| 257 case STATE_AWAIT_MODE_CHANGE_CAPTURE: | |
| 258 state = STATE_AWAIT_IMAGE; | |
| 259 break; | |
| 260 case STATE_AWAIT_IMAGE: | |
| 261 state = STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF; | |
| 262 r = set_mode_async(MODE_AWAIT_FINGER_OFF); | |
| 263 break; | |
| 264 case STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF: | |
| 265 state = STATE_AWAIT_IRQ_FINGER_REMOVED; | |
| 266 break; | |
| 267 default: | |
| 268 printf("unrecognised state %d\n", state); | |
| 269 } | |
| 270 if (r < 0) { | |
| 271 fprintf(stderr, "error detected changing state\n"); | |
| 272 return r; | |
| 273 } | |
| 274 | |
| 275 printf("new state: %d\n", state); | |
| 276 return 0; | |
| 277 } | |
| 278 | |
| 279 static void LIBUSB_CALL cb_irq(struct libusb_transfer *transfer) | |
| 280 { | |
| 281 unsigned char irqtype = transfer->buffer[0]; | |
| 282 | |
| 283 if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { | |
| 284 fprintf(stderr, "irq transfer status %d?\n", transfer->status); | |
| 285 do_exit = 2; | |
| 286 libusb_free_transfer(transfer); | |
| 287 irq_transfer = NULL; | |
| 288 return; | |
| 289 } | |
| 290 | |
| 291 printf("IRQ callback %02x\n", irqtype); | |
| 292 switch (state) { | |
| 293 case STATE_AWAIT_IRQ_FINGER_DETECTED: | |
| 294 if (irqtype == 0x01) { | |
| 295 if (next_state() < 0) { | |
| 296 do_exit = 2; | |
| 297 return; | |
| 298 } | |
| 299 } else { | |
| 300 printf("finger-on-sensor detected in wrong state!\n"); | |
| 301 } | |
| 302 break; | |
| 303 case STATE_AWAIT_IRQ_FINGER_REMOVED: | |
| 304 if (irqtype == 0x02) { | |
| 305 if (next_state() < 0) { | |
| 306 do_exit = 2; | |
| 307 return; | |
| 308 } | |
| 309 } else { | |
| 310 printf("finger-on-sensor detected in wrong state!\n"); | |
| 311 } | |
| 312 break; | |
| 313 } | |
| 314 if (libusb_submit_transfer(irq_transfer) < 0) | |
| 315 do_exit = 2; | |
| 316 } | |
| 317 | |
| 318 static void LIBUSB_CALL cb_img(struct libusb_transfer *transfer) | |
| 319 { | |
| 320 if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { | |
| 321 fprintf(stderr, "img transfer status %d?\n", transfer->status); | |
| 322 do_exit = 2; | |
| 323 libusb_free_transfer(transfer); | |
| 324 img_transfer = NULL; | |
| 325 return; | |
| 326 } | |
| 327 | |
| 328 printf("Image callback\n"); | |
| 329 save_to_file(imgbuf); | |
| 330 if (next_state() < 0) { | |
| 331 do_exit = 2; | |
| 332 return; | |
| 333 } | |
| 334 if (libusb_submit_transfer(img_transfer) < 0) | |
| 335 do_exit = 2; | |
| 336 } | |
| 337 | |
| 338 static int init_capture(void) | |
| 339 { | |
| 340 int r; | |
| 341 | |
| 342 r = libusb_submit_transfer(irq_transfer); | |
| 343 if (r < 0) | |
| 344 return r; | |
| 345 | |
| 346 r = libusb_submit_transfer(img_transfer); | |
| 347 if (r < 0) { | |
| 348 libusb_cancel_transfer(irq_transfer); | |
| 349 while (irq_transfer) | |
| 350 if (libusb_handle_events(NULL) < 0) | |
| 351 break; | |
| 352 return r; | |
| 353 } | |
| 354 | |
| 355 /* start state machine */ | |
| 356 state = STATE_AWAIT_IRQ_FINGER_REMOVED; | |
| 357 return next_state(); | |
| 358 } | |
| 359 | |
| 360 static int do_init(void) | |
| 361 { | |
| 362 unsigned char status; | |
| 363 int r; | |
| 364 | |
| 365 r = get_hwstat(&status); | |
| 366 if (r < 0) | |
| 367 return r; | |
| 368 | |
| 369 if (!(status & 0x80)) { | |
| 370 r = set_hwstat(status | 0x80); | |
| 371 if (r < 0) | |
| 372 return r; | |
| 373 r = get_hwstat(&status); | |
| 374 if (r < 0) | |
| 375 return r; | |
| 376 } | |
| 377 | |
| 378 status &= ~0x80; | |
| 379 r = set_hwstat(status); | |
| 380 if (r < 0) | |
| 381 return r; | |
| 382 | |
| 383 r = get_hwstat(&status); | |
| 384 if (r < 0) | |
| 385 return r; | |
| 386 | |
| 387 r = sync_intr(0x56); | |
| 388 if (r < 0) | |
| 389 return r; | |
| 390 | |
| 391 return 0; | |
| 392 } | |
| 393 | |
| 394 static int alloc_transfers(void) | |
| 395 { | |
| 396 img_transfer = libusb_alloc_transfer(0); | |
| 397 if (!img_transfer) | |
| 398 return -ENOMEM; | |
| 399 | |
| 400 irq_transfer = libusb_alloc_transfer(0); | |
| 401 if (!irq_transfer) | |
| 402 return -ENOMEM; | |
| 403 | |
| 404 libusb_fill_bulk_transfer(img_transfer, devh, EP_DATA, imgbuf, | |
| 405 sizeof(imgbuf), cb_img, NULL, 0); | |
| 406 libusb_fill_interrupt_transfer(irq_transfer, devh, EP_INTR, irqbuf, | |
| 407 sizeof(irqbuf), cb_irq, NULL, 0); | |
| 408 | |
| 409 return 0; | |
| 410 } | |
| 411 | |
| 412 static void sighandler(int signum) | |
| 413 { | |
| 414 do_exit = 1; | |
| 415 } | |
| 416 | |
| 417 int main(void) | |
| 418 { | |
| 419 struct sigaction sigact; | |
| 420 int r = 1; | |
| 421 | |
| 422 r = libusb_init(NULL); | |
| 423 if (r < 0) { | |
| 424 fprintf(stderr, "failed to initialise libusb\n"); | |
| 425 exit(1); | |
| 426 } | |
| 427 | |
| 428 r = find_dpfp_device(); | |
| 429 if (r < 0) { | |
| 430 fprintf(stderr, "Could not find/open device\n"); | |
| 431 goto out; | |
| 432 } | |
| 433 | |
| 434 r = libusb_claim_interface(devh, 0); | |
| 435 if (r < 0) { | |
| 436 fprintf(stderr, "usb_claim_interface error %d\n", r); | |
| 437 goto out; | |
| 438 } | |
| 439 printf("claimed interface\n"); | |
| 440 | |
| 441 r = print_f0_data(); | |
| 442 if (r < 0) | |
| 443 goto out_release; | |
| 444 | |
| 445 r = do_init(); | |
| 446 if (r < 0) | |
| 447 goto out_deinit; | |
| 448 | |
| 449 /* async from here onwards */ | |
| 450 | |
| 451 r = alloc_transfers(); | |
| 452 if (r < 0) | |
| 453 goto out_deinit; | |
| 454 | |
| 455 r = init_capture(); | |
| 456 if (r < 0) | |
| 457 goto out_deinit; | |
| 458 | |
| 459 sigact.sa_handler = sighandler; | |
| 460 sigemptyset(&sigact.sa_mask); | |
| 461 sigact.sa_flags = 0; | |
| 462 sigaction(SIGINT, &sigact, NULL); | |
| 463 sigaction(SIGTERM, &sigact, NULL); | |
| 464 sigaction(SIGQUIT, &sigact, NULL); | |
| 465 | |
| 466 while (!do_exit) { | |
| 467 r = libusb_handle_events(NULL); | |
| 468 if (r < 0) | |
| 469 goto out_deinit; | |
| 470 } | |
| 471 | |
| 472 printf("shutting down...\n"); | |
| 473 | |
| 474 if (irq_transfer) { | |
| 475 r = libusb_cancel_transfer(irq_transfer); | |
| 476 if (r < 0) | |
| 477 goto out_deinit; | |
| 478 } | |
| 479 | |
| 480 if (img_transfer) { | |
| 481 r = libusb_cancel_transfer(img_transfer); | |
| 482 if (r < 0) | |
| 483 goto out_deinit; | |
| 484 } | |
| 485 | |
| 486 while (irq_transfer || img_transfer) | |
| 487 if (libusb_handle_events(NULL) < 0) | |
| 488 break; | |
| 489 | |
| 490 if (do_exit == 1) | |
| 491 r = 0; | |
| 492 else | |
| 493 r = 1; | |
| 494 | |
| 495 out_deinit: | |
| 496 libusb_free_transfer(img_transfer); | |
| 497 libusb_free_transfer(irq_transfer); | |
| 498 set_mode(0); | |
| 499 set_hwstat(0x80); | |
| 500 out_release: | |
| 501 libusb_release_interface(devh, 0); | |
| 502 out: | |
| 503 libusb_close(devh); | |
| 504 libusb_exit(NULL); | |
| 505 return r >= 0 ? r : -r; | |
| 506 } | |
| 507 | |
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Chromium Code Reviews
Issue 9866021:
Revert 129069 - Import libusb 1.0.9-rc3 into third_party. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src/