summaryrefslogtreecommitdiffstats
path: root/compat/fakehid.c
blob: feefe2a62e8e00df30b7fcb19a9a7fa91f03be75 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
/*
 *
 *  BlueZ - Bluetooth protocol stack for Linux
 *
 *  Copyright (C) 2003-2008  Marcel Holtmann <marcel@holtmann.org>
 *
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#define _GNU_SOURCE
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <signal.h>
#include <sys/poll.h>
#include <sys/ioctl.h>
#include <sys/socket.h>

#include <bluetooth/bluetooth.h>
#include <bluetooth/rfcomm.h>
#include <bluetooth/hidp.h>

#include "hidd.h"
#include "uinput.h"

#include <math.h>

#ifdef NEED_PPOLL
#include "ppoll.h"
#endif

static volatile sig_atomic_t __io_canceled = 0;

static void sig_hup(int sig)
{
}

static void sig_term(int sig)
{
	__io_canceled = 1;
}

static void send_event(int fd, uint16_t type, uint16_t code, int32_t value)
{
	struct uinput_event event;
	int len;

	if (fd <= fileno(stderr))
		return;

	memset(&event, 0, sizeof(event));
	event.type = type;
	event.code = code;
	event.value = value;

	len = write(fd, &event, sizeof(event));
}

static int uinput_create(char *name, int keyboard, int mouse)
{
	struct uinput_dev dev;
	int fd, aux;

	fd = open("/dev/uinput", O_RDWR);
	if (fd < 0) {
		fd = open("/dev/input/uinput", O_RDWR);
		if (fd < 0) {
			fd = open("/dev/misc/uinput", O_RDWR);
			if (fd < 0) {
				fprintf(stderr, "Can't open input device: %s (%d)\n",
							strerror(errno), errno);
				return -1;
			}
		}
	}

	memset(&dev, 0, sizeof(dev));

	if (name)
		strncpy(dev.name, name, UINPUT_MAX_NAME_SIZE);

	dev.id.bustype = BUS_BLUETOOTH;
	dev.id.vendor  = 0x0000;
	dev.id.product = 0x0000;
	dev.id.version = 0x0000;

	if (write(fd, &dev, sizeof(dev)) < 0) {
		fprintf(stderr, "Can't write device information: %s (%d)\n",
							strerror(errno), errno);
		close(fd);
		return -1;
	}

	if (mouse) {
		ioctl(fd, UI_SET_EVBIT, EV_REL);

		for (aux = REL_X; aux <= REL_MISC; aux++)
			ioctl(fd, UI_SET_RELBIT, aux);
	}

	if (keyboard) {
		ioctl(fd, UI_SET_EVBIT, EV_KEY);
		ioctl(fd, UI_SET_EVBIT, EV_LED);
		ioctl(fd, UI_SET_EVBIT, EV_REP);

		for (aux = KEY_RESERVED; aux <= KEY_UNKNOWN; aux++)
			ioctl(fd, UI_SET_KEYBIT, aux);

		//for (aux = LED_NUML; aux <= LED_MISC; aux++)
		//	ioctl(fd, UI_SET_LEDBIT, aux);
	}

	if (mouse) {
		ioctl(fd, UI_SET_EVBIT, EV_KEY);

		for (aux = BTN_LEFT; aux <= BTN_BACK; aux++)
			ioctl(fd, UI_SET_KEYBIT, aux);
	}

	ioctl(fd, UI_DEV_CREATE);

	return fd;
}

static int rfcomm_connect(const bdaddr_t *src, const bdaddr_t *dst, uint8_t channel)
{
	struct sockaddr_rc addr;
	int sk;

	sk = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
	if (sk < 0) {
		fprintf(stderr, "Can't create socket: %s (%d)\n",
							strerror(errno), errno);
		return -1;
	}

	memset(&addr, 0, sizeof(addr));
	addr.rc_family = AF_BLUETOOTH;
	bacpy(&addr.rc_bdaddr, src);

	if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
		fprintf(stderr, "Can't bind socket: %s (%d)\n",
							strerror(errno), errno);
		close(sk);
		return -1;
	}

	memset(&addr, 0, sizeof(addr));
	addr.rc_family = AF_BLUETOOTH;
	bacpy(&addr.rc_bdaddr, dst);
	addr.rc_channel = channel;

	if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
		fprintf(stderr, "Can't connect: %s (%d)\n",
							strerror(errno), errno);
		close(sk);
		return -1;
	}

	return sk;
}

static void func(int fd)
{
}

static void back(int fd)
{
}

static void next(int fd)
{
}

static void button(int fd, unsigned int button, int is_press)
{
	switch (button) {
	case 1:
		send_event(fd, EV_KEY, BTN_LEFT, is_press);
		break;
	case 3:
		send_event(fd, EV_KEY, BTN_RIGHT, is_press);
		break;
	}

	send_event(fd, EV_SYN, SYN_REPORT, 0);
}

static void move(int fd, unsigned int direction)
{
	double angle;
	int32_t x, y;

	angle = (direction * 22.5) * 3.1415926 / 180;
	x = (int) (sin(angle) * 8);
	y = (int) (cos(angle) * -8);

	send_event(fd, EV_REL, REL_X, x);
	send_event(fd, EV_REL, REL_Y, y);

	send_event(fd, EV_SYN, SYN_REPORT, 0);
}

static inline void epox_decode(int fd, unsigned char event)
{
	switch (event) {
	case 48:
		func(fd); break;
	case 55:
		back(fd); break;
	case 56:
		next(fd); break;
	case 53:
		button(fd, 1, 1); break;
	case 121:
		button(fd, 1, 0); break;
	case 113:
		break;
	case 54:
		button(fd, 3, 1); break;
	case 120:
		button(fd, 3, 0); break;
	case 112:
		break;
	case 51:
		move(fd, 0); break;
	case 97:
		move(fd, 1); break;
	case 65:
		move(fd, 2); break;
	case 98:
		move(fd, 3); break;
	case 50:
		move(fd, 4); break;
	case 99:
		move(fd, 5); break;
	case 67:
		move(fd, 6); break;
	case 101:
		move(fd, 7); break;
	case 52:
		move(fd, 8); break;
	case 100:
		move(fd, 9); break;
	case 66:
		move(fd, 10); break;
	case 102:
		move(fd, 11); break;
	case 49:
		move(fd, 12); break;
	case 103:
		move(fd, 13); break;
	case 57:
		move(fd, 14); break;
	case 104:
		move(fd, 15); break;
	case 69:
		break;
	default:
		printf("Unknown event code %d\n", event);
		break;
	}
}

int epox_presenter(const bdaddr_t *src, const bdaddr_t *dst, uint8_t channel)
{
	unsigned char buf[16];
	struct sigaction sa;
	struct pollfd p;
	sigset_t sigs;
	char addr[18];
	int i, fd, sk, len;

	sk = rfcomm_connect(src, dst, channel);
	if (sk < 0)
		return -1;

	fd = uinput_create("Bluetooth Presenter", 0, 1);
	if (fd < 0) {
		close(sk);
		return -1;
	}

	ba2str(dst, addr);

	printf("Connected to %s on channel %d\n", addr, channel);
	printf("Press CTRL-C for hangup\n");

	memset(&sa, 0, sizeof(sa));
	sa.sa_flags   = SA_NOCLDSTOP;
	sa.sa_handler = SIG_IGN;
	sigaction(SIGCHLD, &sa, NULL);
	sigaction(SIGPIPE, &sa, NULL);

	sa.sa_handler = sig_term;
	sigaction(SIGTERM, &sa, NULL);
	sigaction(SIGINT,  &sa, NULL);

	sa.sa_handler = sig_hup;
	sigaction(SIGHUP, &sa, NULL);

	sigfillset(&sigs);
	sigdelset(&sigs, SIGCHLD);
	sigdelset(&sigs, SIGPIPE);
	sigdelset(&sigs, SIGTERM);
	sigdelset(&sigs, SIGINT);
	sigdelset(&sigs, SIGHUP);

	p.fd = sk;
	p.events = POLLIN | POLLERR | POLLHUP;

	while (!__io_canceled) {
		p.revents = 0;
		if (ppoll(&p, 1, NULL, &sigs) < 1)
			continue;

		len = read(sk, buf, sizeof(buf));
		if (len < 0)
			break;

		for (i = 0; i < len; i++)
			epox_decode(fd, buf[i]);
	}

	printf("Disconnected\n");

	ioctl(fd, UI_DEV_DESTROY);

	close(fd);
	close(sk);

	return 0;
}

int headset_presenter(const bdaddr_t *src, const bdaddr_t *dst, uint8_t channel)
{
	printf("Not implemented\n");
	return -1;
}

/* The strange meta key close to Ctrl has been assigned to Esc,
   Fn key to CtrlR and the left space to Alt*/

static unsigned char jthree_keycodes[63] = {
	KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6,
	KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T,
	KEY_A, KEY_S, KEY_D, KEY_F, KEY_G,
	KEY_Z, KEY_X, KEY_C, KEY_V, KEY_B,
	KEY_LEFTALT, KEY_TAB, KEY_CAPSLOCK, KEY_ESC,
	KEY_7, KEY_8, KEY_9, KEY_0, KEY_MINUS, KEY_EQUAL, KEY_BACKSPACE,
	KEY_Y, KEY_U, KEY_I, KEY_O, KEY_P, KEY_LEFTBRACE, KEY_RIGHTBRACE,
	KEY_H, KEY_J, KEY_K, KEY_L, KEY_SEMICOLON, KEY_APOSTROPHE, KEY_ENTER,
	KEY_N, KEY_M, KEY_COMMA, KEY_DOT, KEY_SLASH, KEY_UP,
	KEY_SPACE, KEY_COMPOSE, KEY_LEFT, KEY_DOWN, KEY_RIGHT,
	KEY_LEFTCTRL, KEY_RIGHTSHIFT, KEY_LEFTSHIFT, KEY_DELETE, KEY_RIGHTCTRL, KEY_RIGHTALT,
};

static inline void jthree_decode(int fd, unsigned char event)
{
	if (event > 63)
		send_event(fd, EV_KEY, jthree_keycodes[event & 0x3f], 0);
	else
		send_event(fd, EV_KEY, jthree_keycodes[event - 1], 1);
}

int jthree_keyboard(const bdaddr_t *src, const bdaddr_t *dst, uint8_t channel)
{
	unsigned char buf[16];
	struct sigaction sa;
	struct pollfd p;
	sigset_t sigs;
	char addr[18];
	int i, fd, sk, len;

	sk = rfcomm_connect(src, dst, channel);
	if (sk < 0)
		return -1;

	fd = uinput_create("J-Three Keyboard", 1, 0);
	if (fd < 0) {
		close(sk);
		return -1;
	}

	ba2str(dst, addr);

	printf("Connected to %s on channel %d\n", addr, channel);
	printf("Press CTRL-C for hangup\n");

	memset(&sa, 0, sizeof(sa));
	sa.sa_flags   = SA_NOCLDSTOP;
	sa.sa_handler = SIG_IGN;
	sigaction(SIGCHLD, &sa, NULL);
	sigaction(SIGPIPE, &sa, NULL);

	sa.sa_handler = sig_term;
	sigaction(SIGTERM, &sa, NULL);
	sigaction(SIGINT,  &sa, NULL);

	sa.sa_handler = sig_hup;
	sigaction(SIGHUP, &sa, NULL);

	sigfillset(&sigs);
	sigdelset(&sigs, SIGCHLD);
	sigdelset(&sigs, SIGPIPE);
	sigdelset(&sigs, SIGTERM);
	sigdelset(&sigs, SIGINT);
	sigdelset(&sigs, SIGHUP);

	p.fd = sk;
	p.events = POLLIN | POLLERR | POLLHUP;

	while (!__io_canceled) {
		p.revents = 0;
		if (ppoll(&p, 1, NULL, &sigs) < 1)
			continue;

		len = read(sk, buf, sizeof(buf));
		if (len < 0)
			break;

		for (i = 0; i < len; i++)
			jthree_decode(fd, buf[i]);
	}

	printf("Disconnected\n");

	ioctl(fd, UI_DEV_DESTROY);

	close(fd);
	close(sk);

	return 0;
}

static const int celluon_xlate_num[10] = {
	KEY_0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9
};

static const int celluon_xlate_char[26] = {
	KEY_A, KEY_B, KEY_C, KEY_D, KEY_E, KEY_F, KEY_G, KEY_H, KEY_I, KEY_J,
	KEY_K, KEY_L, KEY_M, KEY_N, KEY_O, KEY_P, KEY_Q, KEY_R, KEY_S, KEY_T,
	KEY_U, KEY_V, KEY_W, KEY_X, KEY_Y, KEY_Z
};

static int celluon_xlate(int c)
{
	if (c >= '0' && c <= '9')
		return celluon_xlate_num[c - '0'];

	if (c >= 'A' && c <= 'Z')
		return celluon_xlate_char[c - 'A'];

	switch (c) {
	case 0x08:
		return KEY_BACKSPACE;
	case 0x09:
		return KEY_TAB;
	case 0x0d:
		return KEY_ENTER;
	case 0x11:
		return KEY_LEFTCTRL;
	case 0x14:
		return KEY_CAPSLOCK;
	case 0x20:
		return KEY_SPACE;
	case 0x25:
		return KEY_LEFT;
	case 0x26:
		return KEY_UP;
	case 0x27:
		return KEY_RIGHT;
	case 0x28:
		return KEY_DOWN;
	case 0x2e:
		return KEY_DELETE;
	case 0x5b:
		return KEY_MENU;
	case 0xa1:
		return KEY_RIGHTSHIFT;
	case 0xa0:
		return KEY_LEFTSHIFT;
	case 0xba:
		return KEY_SEMICOLON;
	case 0xbd:
		return KEY_MINUS;
	case 0xbc:
		return KEY_COMMA;
	case 0xbb:
		return KEY_EQUAL;
	case 0xbe:
		return KEY_DOT;
	case 0xbf:
		return KEY_SLASH;
	case 0xc0:
		return KEY_GRAVE;
	case 0xdb:
		return KEY_LEFTBRACE;
	case 0xdc:
		return KEY_BACKSLASH;
	case 0xdd:
		return KEY_RIGHTBRACE;
	case 0xde:
		return KEY_APOSTROPHE;
	case 0xff03:
		return KEY_HOMEPAGE;
	case 0xff04:
		return KEY_TIME;
	case 0xff06:
		return KEY_OPEN;
	case 0xff07:
		return KEY_LIST;
	case 0xff08:
		return KEY_MAIL;
	case 0xff30:
		return KEY_CALC;
	case 0xff1a: /* Map FN to ALT */
		return KEY_LEFTALT;
	case 0xff2f:
		return KEY_INFO;
	default:
		printf("Unknown key %x\n", c);
		return c;
	}
}

struct celluon_state {
	int len;	/* Expected length of current packet */
	int count;	/* Number of bytes received */
	int action;
	int key;
};

static void celluon_decode(int fd, struct celluon_state *s, uint8_t c)
{
	if (s->count < 2 && c != 0xa5) {
		/* Lost Sync */
		s->count = 0;
		return;
	}

	switch (s->count) {
	case 0:
		/* New packet - Reset state */
		s->len = 30;
		s->key = 0;
		break;
	case 1:
		break;
	case 6:
		s->action = c;
		break;
	case 28:
		s->key = c;
		if (c == 0xff)
			s->len = 31;
		break;
	case 29:
	case 30:
		if (s->count == s->len - 1) {
			/* TODO: Verify checksum */
			if (s->action < 2) {
				send_event(fd, EV_KEY, celluon_xlate(s->key),
								s->action);
			}
			s->count = -1;
		} else {
			s->key = (s->key << 8) | c;
		}
		break;
	}

	s->count++;

	return;
}

int celluon_keyboard(const bdaddr_t *src, const bdaddr_t *dst, uint8_t channel)
{
	unsigned char buf[16];
	struct sigaction sa;
	struct pollfd p;
	sigset_t sigs;
	char addr[18];
	int i, fd, sk, len;
	struct celluon_state s;

	sk = rfcomm_connect(src, dst, channel);
	if (sk < 0)
		return -1;

	fd = uinput_create("Celluon Keyboard", 1, 0);
	if (fd < 0) {
		close(sk);
		return -1;
	}

	ba2str(dst, addr);

	printf("Connected to %s on channel %d\n", addr, channel);
	printf("Press CTRL-C for hangup\n");

	memset(&sa, 0, sizeof(sa));
	sa.sa_flags   = SA_NOCLDSTOP;
	sa.sa_handler = SIG_IGN;
	sigaction(SIGCHLD, &sa, NULL);
	sigaction(SIGPIPE, &sa, NULL);

	sa.sa_handler = sig_term;
	sigaction(SIGTERM, &sa, NULL);
	sigaction(SIGINT,  &sa, NULL);

	sa.sa_handler = sig_hup;
	sigaction(SIGHUP, &sa, NULL);

	sigfillset(&sigs);
	sigdelset(&sigs, SIGCHLD);
	sigdelset(&sigs, SIGPIPE);
	sigdelset(&sigs, SIGTERM);
	sigdelset(&sigs, SIGINT);
	sigdelset(&sigs, SIGHUP);

	p.fd = sk;
	p.events = POLLIN | POLLERR | POLLHUP;

	memset(&s, 0, sizeof(s));

	while (!__io_canceled) {
		p.revents = 0;
		if (ppoll(&p, 1, NULL, &sigs) < 1)
			continue;

		len = read(sk, buf, sizeof(buf));
		if (len < 0)
			break;

		for (i = 0; i < len; i++)
			celluon_decode(fd, &s, buf[i]);
	}

	printf("Disconnected\n");

	ioctl(fd, UI_DEV_DESTROY);

	close(fd);
	close(sk);

	return 0;
}