-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathmoused.c
2465 lines (2211 loc) · 63.7 KB
/
moused.c
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
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/**
** SPDX-License-Identifier: BSD-4-Clause
**
** Copyright (c) 1995 Michael Smith, All rights reserved.
** Copyright (c) 2008 Jean-Sebastien Pedron <dumbbell@FreeBSD.org>
** Copyright (c) 2021,2024 Vladimir Kondratyev <wulf@FreeBSD.org>
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer as
** the first lines of this file unmodified.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. All advertising materials mentioning features or use of this software
** must display the following acknowledgment:
** This product includes software developed by Michael Smith.
** 4. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY Michael Smith ``AS IS'' AND ANY
** EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Michael Smith BE LIABLE FOR
** ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
** BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
** OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
** EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**
**/
/**
** MOUSED.C
**
** Mouse daemon : listens to a evdev device node for mouse data stream,
** interprets data and passes ioctls off to the console driver.
**
**/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/bitstring.h>
#include <sys/consio.h>
#include <sys/mouse.h>
#include <sys/time.h>
#include <dev/evdev/input.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <libutil.h>
#include <math.h>
#include <poll.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include "util.h"
#include "quirks.h"
/*
* bitstr_t implementation must be identical to one found in EVIOCG*
* libevdev ioctls. Our bitstring(3) API is compatible since r299090.
*/
_Static_assert(sizeof(bitstr_t) == sizeof(unsigned long),
"bitstr_t size mismatch");
#define MAX_CLICKTHRESHOLD 2000 /* 2 seconds */
#define MAX_BUTTON2TIMEOUT 2000 /* 2 seconds */
#define DFLT_CLICKTHRESHOLD 500 /* 0.5 second */
#define DFLT_BUTTON2TIMEOUT 100 /* 0.1 second */
#define DFLT_SCROLLTHRESHOLD 3 /* 3 pixels */
#define DFLT_SCROLLSPEED 2 /* 2 pixels */
#define DFLT_MOUSE_RESOLUTION 8 /* dpmm, == 200dpi */
#define DFLT_TPAD_RESOLUTION 40 /* dpmm, typical X res for Synaptics */
#define DFLT_LINEHEIGHT 10 /* pixels per line */
/* Abort 3-button emulation delay after this many movement events. */
#define BUTTON2_MAXMOVE 3
#define MOUSE_XAXIS (-1)
#define MOUSE_YAXIS (-2)
#define ChordMiddle 0x0001
#define Emulate3Button 0x0002
#define MAX_FINGERS 10
#define ID_NONE 0
#define ID_PORT 1
/* Was ID_IF 2 */
#define ID_TYPE 4
#define ID_MODEL 8
#define ID_ALL (ID_PORT | ID_TYPE | ID_MODEL)
/* Operations on timespecs */
#define tsclr(tvp) timespecclear(tvp)
#define tscmp(tvp, uvp, cmp) timespeccmp(tvp, uvp, cmp)
#define tssub(tvp, uvp, vvp) timespecsub(tvp, uvp, vvp)
#define msec2ts(msec) (struct timespec) { \
.tv_sec = (msec) / 1000, \
.tv_nsec = (msec) % 1000 * 1000000, \
}
static inline struct timespec
tsaddms(struct timespec* tsp, u_int ms)
{
struct timespec ret;
ret = msec2ts(ms);
timespecadd(tsp, &ret, &ret);
return (ret);
};
static inline struct timespec
tssubms(struct timespec* tsp, u_int ms)
{
struct timespec ret;
ret = msec2ts(ms);
timespecsub(tsp, &ret, &ret);
return (ret);
};
#define debug(...) do { \
if (debug && nodaemon) \
warnx(__VA_ARGS__); \
} while (0)
#define logerr(e, ...) do { \
log_or_warn(LOG_DAEMON | LOG_ERR, errno, __VA_ARGS__); \
exit(e); \
} while (0)
#define logerrx(e, ...) do { \
log_or_warn(LOG_DAEMON | LOG_ERR, 0, __VA_ARGS__); \
exit(e); \
} while (0)
#define logwarn(...) \
log_or_warn(LOG_DAEMON | LOG_WARNING, errno, __VA_ARGS__)
#define logwarnx(...) \
log_or_warn(LOG_DAEMON | LOG_WARNING, 0, __VA_ARGS__)
enum gesture {
GEST_IGNORE,
GEST_ACCUMULATE,
GEST_MOVE,
GEST_VSCROLL,
GEST_HSCROLL,
};
/* structures */
/* global variables */
static int debug = 0;
static bool nodaemon = false;
static bool background = false;
static bool paused = false;
static bool grab = false;
static int identify = ID_NONE;
static const char *devpath = NULL;
static const char *pidfile = "/var/run/moused.pid";
static struct pidfh *pfh;
static const char *config_file = CONFSDIR "/moused.conf";
static const char *quirks_path = QUIRKSDIR;
static struct quirks_context *quirks;
static bool opt_drift_terminate = false;
static u_int opt_drift_distance = 4; /* max steps X+Y */
static u_int opt_drift_time = 500; /* ms */
static u_int opt_drift_after = 4000; /* ms */
static double opt_accelx = 1.0;
static double opt_accely = 1.0;
static bool opt_exp_accel = false;
static double opt_expoaccel = 1.0;
static double opt_expoffset = 1.0;
static bool opt_virtual_scroll = false;
static bool opt_hvirtual_scroll = false;
/* local variables */
/* types (the table must be ordered by DEVICE_TYPE_XXX in util.h) */
static const char *rnames[] = {
[DEVICE_TYPE_MOUSE] = "mouse",
[DEVICE_TYPE_POINTINGSTICK] = "pointing stick",
[DEVICE_TYPE_TOUCHPAD] = "touchpad",
[DEVICE_TYPE_TOUCHSCREEN] = "touchscreen",
[DEVICE_TYPE_TABLET] = "tablet",
[DEVICE_TYPE_TABLET_PAD] = "tablet pad",
[DEVICE_TYPE_KEYBOARD] = "keyboard",
[DEVICE_TYPE_JOYSTICK] = "joystick",
};
static struct tpcaps {
bool is_clickpad;
bool is_mt;
bool cap_touch;
bool cap_pressure;
bool cap_width;
int min_x;
int max_x;
int min_y;
int max_y;
int res_x; /* dots per mm */
int res_y; /* dots per mm */
} synhw;
static struct tpinfo {
bool two_finger_scroll; /* Enable two finger scrolling */
bool natural_scroll; /* Enable natural scrolling */
bool three_finger_drag; /* Enable dragging with three fingers */
u_int min_pressure_hi; /* Min pressure to start an action */
u_int min_pressure_lo; /* Min pressure to continue an action */
u_int max_pressure; /* Maximum pressure to detect palm */
u_int max_width; /* Max finger width to detect palm */
int margin_top; /* Top margin */
int margin_right; /* Right margin */
int margin_bottom; /* Bottom margin */
int margin_left; /* Left margin */
u_int tap_timeout; /* */
u_int tap_threshold; /* Minimum pressure to detect a tap */
double tap_max_delta; /* Length of segments above which a tap is ignored */
u_int taphold_timeout; /* Maximum elapsed time between two taps to consider a tap-hold action */
double vscroll_ver_area; /* Area reserved for vertical virtual scrolling */
double vscroll_hor_area; /* Area reserved for horizontal virtual scrolling */
double vscroll_min_delta; /* Minimum movement to consider virtual scrolling */
int softbuttons_y; /* Vertical size of softbuttons area */
int softbutton2_x; /* Horizontal offset of 2-nd softbutton left edge */
int softbutton3_x; /* Horizontal offset of 3-rd softbutton left edge */
} syninfo = {
.two_finger_scroll = true,
.natural_scroll = false,
.three_finger_drag = false,
.min_pressure_hi = 1,
.min_pressure_lo = 1,
.max_pressure = 130,
.max_width = 16,
.tap_timeout = 180, /* ms */
.tap_threshold = 0,
.tap_max_delta = 1.3, /* mm */
.taphold_timeout = 300, /* ms */
.vscroll_min_delta = 1.25, /* mm */
.vscroll_hor_area = 0.0, /* mm */
.vscroll_ver_area = -15.0, /* mm */
};
static struct gesture_state {
int start_x;
int start_y;
int prev_x;
int prev_y;
int prev_nfingers;
int fingers_nb;
int tap_button;
bool fingerdown;
bool in_taphold;
int in_vscroll;
int zmax; /* maximum pressure value */
struct timespec taptimeout; /* tap timeout for touchpads */
struct timespec startdelay;
int idletimeout;
} gesture = {
.idletimeout = -1,
};
struct finger {
int x;
int y;
int p;
int w;
int id; /* id=0 - no touch, id>1 - touch id */
};
static struct evdev_state {
int buttons;
/* Relative */
int dx;
int dy;
int dz;
int dw;
int acc_dx;
int acc_dy;
/* Absolute single-touch */
int nfingers;
struct finger st;
/* Absolute multi-touch */
int slot;
struct finger mt[MAX_FINGERS];
} ev;
enum scroll_state {
SCROLL_NOTSCROLLING,
SCROLL_PREPARE,
SCROLL_SCROLLING,
};
struct scroll {
int threshold; /* Movement distance before virtual scrolling */
int speed; /* Movement distance to rate of scrolling */
enum scroll_state state;
int movement;
int hmovement;
};
struct drift_xy {
int x;
int y;
};
struct drift {
u_int distance; /* max steps X+Y */
u_int time; /* ms */
struct timespec time_ts;
struct timespec twotime_ts; /* 2*drift_time */
u_int after; /* ms */
struct timespec after_ts;
bool terminate;
struct timespec current_ts;
struct timespec last_activity;
struct timespec since;
struct drift_xy last; /* steps in last drift_time */
struct drift_xy previous; /* steps in prev. drift_time */
};
struct accel {
bool is_exponential; /* Exponential acceleration is enabled */
double accelx; /* Acceleration in the X axis */
double accely; /* Acceleration in the Y axis */
double accelz; /* Acceleration in the wheel axis */
double expoaccel; /* Exponential acceleration */
double expoffset; /* Movement offset for exponential accel. */
double remainx; /* Remainder on X, Y and wheel axis, ... */
double remainy; /* ... respectively to compensate */
double remainz; /* ... for rounding errors. */
double lastlength[3];
};
static struct rodentparam {
int flags;
struct device dev; /* Device */
struct quirks *quirks; /* Configuration file and quirks */
int zmap[4]; /* MOUSE_{X|Y}AXIS or a button number */
int wmode; /* wheel mode button number */
int mfd; /* mouse file descriptor */
int cfd; /* /dev/consolectl file descriptor */
long clickthreshold; /* double click speed in msec */
long button2timeout; /* 3 button emulation timeout */
struct drift drift;
struct accel accel; /* cursor acceleration state */
struct scroll scroll; /* virtual scroll state */
} rodent = {
.flags = 0,
.dev.path = NULL,
.dev.type = DEVICE_TYPE_UNKNOWN,
.quirks = NULL,
.zmap = { 0, 0, 0, 0 },
.wmode = 0,
.mfd = -1,
.cfd = -1,
.clickthreshold = DFLT_CLICKTHRESHOLD,
.button2timeout = DFLT_BUTTON2TIMEOUT,
.scroll = {
.threshold = DFLT_SCROLLTHRESHOLD,
.speed = DFLT_SCROLLSPEED,
},
};
/* button status */
struct button_state {
int count; /* 0: up, 1: single click, 2: double click,... */
struct timespec ts; /* timestamp on the last button event */
};
static struct button_state bstate[MOUSE_MAXBUTTON]; /* button state */
static struct button_state *mstate[MOUSE_MAXBUTTON];/* mapped button st.*/
static struct button_state zstate[4]; /* Z/W axis state */
/* state machine for 3 button emulation */
enum bt3_emul_state {
S0, /* start */
S1, /* button 1 delayed down */
S2, /* button 3 delayed down */
S3, /* both buttons down -> button 2 down */
S4, /* button 1 delayed up */
S5, /* button 1 down */
S6, /* button 3 down */
S7, /* both buttons down */
S8, /* button 3 delayed up */
S9, /* button 1 or 3 up after S3 */
};
#define A(b1, b3) (((b1) ? 2 : 0) | ((b3) ? 1 : 0))
#define A_TIMEOUT 4
#define S_DELAYED(st) (states[st].s[A_TIMEOUT] != (st))
static const struct {
enum bt3_emul_state s[A_TIMEOUT + 1];
int buttons;
int mask;
bool timeout;
} states[10] = {
/* S0 */
{ { S0, S2, S1, S3, S0 }, 0, ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN), false },
/* S1 */
{ { S4, S2, S1, S3, S5 }, 0, ~MOUSE_BUTTON1DOWN, false },
/* S2 */
{ { S8, S2, S1, S3, S6 }, 0, ~MOUSE_BUTTON3DOWN, false },
/* S3 */
{ { S0, S9, S9, S3, S3 }, MOUSE_BUTTON2DOWN, ~0, false },
/* S4 */
{ { S0, S2, S1, S3, S0 }, MOUSE_BUTTON1DOWN, ~0, true },
/* S5 */
{ { S0, S2, S5, S7, S5 }, MOUSE_BUTTON1DOWN, ~0, false },
/* S6 */
{ { S0, S6, S1, S7, S6 }, MOUSE_BUTTON3DOWN, ~0, false },
/* S7 */
{ { S0, S6, S5, S7, S7 }, MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN, ~0, false },
/* S8 */
{ { S0, S2, S1, S3, S0 }, MOUSE_BUTTON3DOWN, ~0, true },
/* S9 */
{ { S0, S9, S9, S3, S9 }, 0, ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN), false },
};
static enum bt3_emul_state mouse_button_state;
static struct timespec mouse_button_state_ts;
static int mouse_move_delayed;
static jmp_buf env;
/* function prototypes */
static moused_log_handler log_or_warn_va;
static void linacc(int, int, int, int*, int*, int*);
static void expoacc(int, int, int, int*, int*, int*);
static void moused(void);
static void reset(int sig);
static void pause_mouse(int sig);
static void usage(void);
static void log_or_warn(int log_pri, int errnum, const char *fmt, ...)
__printflike(3, 4);
static enum device_type r_identify(int fd);
static const char *r_name(int type);
static int r_init(const char *path);
static int r_protocol(struct input_event *b, mousestatus_t *act);
static void r_vscroll_detect(mousestatus_t *act);
static void r_vscroll(mousestatus_t *act);
static int r_statetrans(mousestatus_t *a1, mousestatus_t *a2, int trans);
static bool r_installmap(char *arg);
static void r_map(mousestatus_t *act1, mousestatus_t *act2);
static void r_timestamp(mousestatus_t *act);
static bool r_timeout(void);
static void r_click(mousestatus_t *act);
static bool r_drift(struct drift *, mousestatus_t *);
static enum gesture r_gestures(int x0, int y0, int z, int w, int nfingers,
struct timespec *time, mousestatus_t *ms);
int
main(int argc, char *argv[])
{
pid_t mpid;
int c;
int i;
int j;
for (i = 0; i < MOUSE_MAXBUTTON; ++i)
mstate[i] = &bstate[i];
while ((c = getopt(argc, argv, "3A:C:E:HI:L:T:VU:a:cdfghi:m:p:q:w:z:"))
!= -1) {
switch(c) {
case '3':
rodent.flags |= Emulate3Button;
break;
case 'E':
rodent.button2timeout = atoi(optarg);
if ((rodent.button2timeout < 0) ||
(rodent.button2timeout > MAX_BUTTON2TIMEOUT)) {
warnx("invalid argument `%s'", optarg);
usage();
}
break;
case 'a':
i = sscanf(optarg, "%lf,%lf", &opt_accelx, &opt_accely);
if (i == 0) {
warnx("invalid linear acceleration argument "
"'%s'", optarg);
usage();
}
if (i == 1)
opt_accely = opt_accelx;
break;
case 'A':
opt_exp_accel = true;
i = sscanf(optarg, "%lf,%lf", &opt_expoaccel,
&opt_expoffset);
if (i == 0) {
warnx("invalid exponential acceleration "
"argument '%s'", optarg);
usage();
}
if (i == 1)
opt_expoffset = 1.0;
break;
case 'c':
rodent.flags |= ChordMiddle;
break;
case 'd':
++debug;
break;
case 'f':
nodaemon = true;
break;
case 'g':
grab = true;
break;
case 'i':
if (strcmp(optarg, "all") == 0)
identify = ID_ALL;
else if (strcmp(optarg, "port") == 0)
identify = ID_PORT;
else if (strcmp(optarg, "type") == 0)
identify = ID_TYPE;
else if (strcmp(optarg, "model") == 0)
identify = ID_MODEL;
else {
warnx("invalid argument `%s'", optarg);
usage();
}
nodaemon = true;
break;
case 'm':
if (!r_installmap(optarg)) {
warnx("invalid argument `%s'", optarg);
usage();
}
break;
case 'p':
devpath = optarg;
break;
case 'w':
i = atoi(optarg);
if ((i <= 0) || (i > MOUSE_MAXBUTTON)) {
warnx("invalid argument `%s'", optarg);
usage();
}
rodent.wmode = 1 << (i - 1);
break;
case 'z':
if (strcmp(optarg, "x") == 0) {
rodent.zmap[0] = MOUSE_XAXIS;
break;
}
if (strcmp(optarg, "y") == 0) {
rodent.zmap[0] = MOUSE_YAXIS;
break;
}
i = atoi(optarg);
/*
* Use button i for negative Z axis movement and
* button (i + 1) for positive Z axis movement.
*/
if ((i <= 0) || (i > MOUSE_MAXBUTTON - 1)) {
warnx("invalid argument `%s'", optarg);
usage();
}
rodent.zmap[0] = i;
rodent.zmap[1] = i + 1;
debug("optind: %d, optarg: '%s'", optind, optarg);
for (j = 1; j < 4; ++j) {
if ((optind >= argc) || !isdigit(*argv[optind]))
break;
i = atoi(argv[optind]);
if ((i <= 0) || (i > MOUSE_MAXBUTTON - 1)) {
warnx("invalid argument `%s'",
argv[optind]);
usage();
}
rodent.zmap[j] = i;
++optind;
}
if ((rodent.zmap[2] != 0) && (rodent.zmap[3] == 0))
rodent.zmap[3] = rodent.zmap[2] + 1;
break;
case 'C':
rodent.clickthreshold = atoi(optarg);
if ((rodent.clickthreshold < 0) ||
(rodent.clickthreshold > MAX_CLICKTHRESHOLD)) {
warnx("invalid argument `%s'", optarg);
usage();
}
break;
case 'H':
opt_hvirtual_scroll = true;
break;
case 'I':
pidfile = optarg;
break;
case 'L':
rodent.scroll.speed = atoi(optarg);
if (rodent.scroll.speed < 0) {
warnx("invalid argument `%s'", optarg);
usage();
}
break;
case 'q':
config_file = optarg;
break;
case 'Q':
quirks_path = optarg;
break;
case 'T':
opt_drift_terminate = true;
sscanf(optarg, "%u,%u,%u", &opt_drift_distance,
&opt_drift_time, &opt_drift_after);
if (opt_drift_distance == 0 ||
opt_drift_time == 0 ||
opt_drift_after == 0) {
warnx("invalid argument `%s'", optarg);
usage();
}
break;
case 'V':
opt_virtual_scroll = true;
break;
case 'U':
rodent.scroll.threshold = atoi(optarg);
if (rodent.scroll.threshold < 0) {
warnx("invalid argument `%s'", optarg);
usage();
}
break;
case 'h':
case '?':
default:
usage();
}
}
if (devpath == NULL) {
warnx("no port name specified");
usage();
}
if ((rodent.cfd = open("/dev/consolectl", O_RDWR, 0)) == -1)
logerr(1, "cannot open /dev/consolectl");
switch (setjmp(env)) {
case SIGHUP:
quirks_context_unref(quirks);
close(rodent.mfd);
/* FALLTHROUGH */
case 0:
break;
case SIGINT:
case SIGQUIT:
case SIGTERM:
exit(0);
/* NOT REACHED */
default:
goto out;
}
signal(SIGHUP , reset);
signal(SIGINT , reset);
signal(SIGQUIT, reset);
signal(SIGTERM, reset);
signal(SIGUSR1, pause_mouse);
quirks = quirks_init_subsystem(quirks_path, config_file,
log_or_warn_va,
background ? QLOG_MOUSED_LOGGING : QLOG_CUSTOM_LOG_PRIORITIES);
if (quirks == NULL)
logwarnx("cannot open configuration file %s", config_file);
if ((rodent.mfd = r_init(devpath)) < 0)
logerrx(1, "Can not initialize device");
/* print some information */
if (identify != ID_NONE) {
if (identify == ID_ALL)
printf("%s %s %s\n", rodent.dev.path,
r_name(rodent.dev.type), rodent.dev.name);
else if (identify & ID_PORT)
printf("%s\n", rodent.dev.path);
else if (identify & ID_TYPE)
printf("%s\n", r_name(rodent.dev.type));
else if (identify & ID_MODEL)
printf("%s\n", rodent.dev.name);
exit(0);
}
if (!nodaemon && !background) {
pfh = pidfile_open(pidfile, 0600, &mpid);
if (pfh == NULL) {
if (errno == EEXIST)
logerrx(1, "moused already running, pid: %d", mpid);
logwarn("cannot open pid file");
}
if (daemon(0, 0)) {
int saved_errno = errno;
pidfile_remove(pfh);
errno = saved_errno;
logerr(1, "failed to become a daemon");
} else {
background = true;
pidfile_write(pfh);
}
}
moused();
out:
quirks_context_unref(quirks);
if (rodent.mfd != -1)
close(rodent.mfd);
if (rodent.cfd != -1)
close(rodent.cfd);
exit(0);
}
/*
* Function to calculate linear acceleration.
*
* If there are any rounding errors, the remainder
* is stored in the remainx and remainy variables
* and taken into account upon the next movement.
*/
static void
linacc(int dx, int dy, int dz, int *movex, int *movey, int *movez)
{
struct accel *acc = &rodent.accel;
double fdx, fdy, fdz;
if (dx == 0 && dy == 0 && dz == 0) {
*movex = *movey = *movez = 0;
return;
}
fdx = dx * acc->accelx + acc->remainx;
fdy = dy * acc->accely + acc->remainy;
fdz = dz * acc->accelz + acc->remainz;
*movex = lround(fdx);
*movey = lround(fdy);
*movez = lround(fdz);
acc->remainx = fdx - *movex;
acc->remainy = fdy - *movey;
acc->remainz = fdz - *movez;
}
/*
* Function to calculate exponential acceleration.
* (Also includes linear acceleration if enabled.)
*
* In order to give a smoother behaviour, we record the four
* most recent non-zero movements and use their average value
* to calculate the acceleration.
*/
static void
expoacc(int dx, int dy, int dz, int *movex, int *movey, int *movez)
{
struct accel *acc = &rodent.accel;
double fdx, fdy, fdz, length, lbase, accel;
if (dx == 0 && dy == 0 && dz == 0) {
*movex = *movey = *movez = 0;
return;
}
fdx = dx * acc->accelx;
fdy = dy * acc->accely;
fdz = dz * acc->accelz;
length = sqrt((fdx * fdx) + (fdy * fdy)); /* Pythagoras */
length = (length + acc->lastlength[0] + acc->lastlength[1] +
acc->lastlength[2]) / 4;
lbase = length / acc->expoffset;
accel = pow(lbase, acc->expoaccel) / lbase;
fdx = fdx * accel + acc->remainx;
fdy = fdy * accel + acc->remainy;
*movex = lround(fdx);
*movey = lround(fdy);
*movez = lround(fdz);
acc->remainx = fdx - *movex;
acc->remainy = fdy - *movey;
acc->remainz = fdz - *movez;
acc->lastlength[2] = acc->lastlength[1];
acc->lastlength[1] = acc->lastlength[0];
/* Insert new average, not original length! */
acc->lastlength[0] = length;
}
static void
moused(void)
{
struct mouse_info mouse;
mousestatus_t action0; /* original mouse action */
mousestatus_t action; /* interim buffer */
mousestatus_t action2; /* mapped action */
int timeout;
bool timeout_em3b;
struct pollfd fds;
struct input_event b;
int flags;
int c;
int i;
/* clear mouse data */
bzero(&action0, sizeof(action0));
bzero(&action, sizeof(action));
bzero(&action2, sizeof(action2));
bzero(&mouse, sizeof(mouse));
/* process mouse data */
for (;;) {
fds.fd = rodent.mfd;
fds.events = POLLIN;
fds.revents = 0;
timeout = -1;
if ((rodent.flags & Emulate3Button) && S_DELAYED(mouse_button_state)) {
timeout = 20;
timeout_em3b = true;
}
if (gesture.idletimeout != -1) {
if (timeout == -1 || gesture.idletimeout < timeout) {
timeout = gesture.idletimeout;
timeout_em3b = false;
} else
gesture.idletimeout -= timeout;
}
c = poll(&fds, 1, timeout);
if (c < 0) { /* error */
logwarn("failed to read from mouse");
continue;
} else if (c == 0 && timeout_em3b) { /* timeout */
/* assert(rodent.flags & Emulate3Button) */
action0.button = action0.obutton;
action0.dx = action0.dy = action0.dz = 0;
action0.flags = flags = 0;
if (r_timeout() && r_statetrans(&action0, &action, A_TIMEOUT)) {
if (debug > 2)
debug("flags:%08x buttons:%08x obuttons:%08x",
action.flags, action.button, action.obutton);
} else {
action0.obutton = action0.button;
continue;
}
} else {
/* mouse movement */
if (c > 0) {
if ((fds.revents & POLLIN) == 0)
return;
if (read(rodent.mfd, &b, sizeof(b)) == -1) {
if (errno == EWOULDBLOCK)
continue;
else
return;
}
} else {
b.time.tv_sec = timeout == 0 ? 0 : LONG_MAX;
b.time.tv_usec = 0;
b.type = EV_SYN;
b.code = SYN_REPORT;
b.value = 1;
}
gesture.idletimeout = -1;
if ((flags = r_protocol(&b, &action0)) == 0)
continue;
if (opt_virtual_scroll || opt_hvirtual_scroll) {
if (action0.button == MOUSE_BUTTON2DOWN) {
debug("[BUTTON2] flags:%08x buttons:%08x obuttons:%08x",
action.flags, action.button, action.obutton);
} else {
debug("[NOTBUTTON2] flags:%08x buttons:%08x obuttons:%08x",
action.flags, action.button, action.obutton);
}
r_vscroll_detect(&action0);
}
r_timestamp(&action0);
r_statetrans(&action0, &action,
A(action0.button & MOUSE_BUTTON1DOWN,
action0.button & MOUSE_BUTTON3DOWN));
debug("flags:%08x buttons:%08x obuttons:%08x", action.flags,
action.button, action.obutton);
}
action0.obutton = action0.button;
flags &= MOUSE_POSCHANGED;
flags |= action.obutton ^ action.button;
action.flags = flags;
if (flags) { /* handler detected action */
r_map(&action, &action2);
debug("activity : buttons 0x%08x dx %d dy %d dz %d",
action2.button, action2.dx, action2.dy, action2.dz);
if (opt_virtual_scroll || opt_hvirtual_scroll) {
/*
* If *only* the middle button is pressed AND we are moving
* the stick/trackpoint/nipple, scroll!
*/
r_vscroll(&action2);
}
if (rodent.drift.terminate) {
if ((flags & MOUSE_POSCHANGED) == 0 ||
action.dz || action2.dz)
rodent.drift.last_activity =
rodent.drift.current_ts;
else {
if (r_drift (&rodent.drift, &action2))
continue;
}
}
/* Defer clicks until we aren't VirtualScroll'ing. */
if (rodent.scroll.state == SCROLL_NOTSCROLLING)
r_click(&action2);
if (action2.flags & MOUSE_POSCHANGED) {
mouse.operation = MOUSE_MOTION_EVENT;
mouse.u.data.buttons = action2.button;
if (rodent.accel.is_exponential) {
expoacc(action2.dx, action2.dy, action2.dz,
&mouse.u.data.x, &mouse.u.data.y, &mouse.u.data.z);
} else {
linacc(action2.dx, action2.dy, action2.dz,
&mouse.u.data.x, &mouse.u.data.y, &mouse.u.data.z);
}
if (debug < 2 && !paused)
ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
}
/*
* If the Z axis movement is mapped to an imaginary physical
* button, we need to cook up a corresponding button `up' event
* after sending a button `down' event.
*/
if ((rodent.zmap[0] > 0) && (action.dz != 0)) {
action.obutton = action.button;
action.dx = action.dy = action.dz = 0;
r_map(&action, &action2);
debug("activity : buttons 0x%08x dx %d dy %d dz %d",
action2.button, action2.dx, action2.dy, action2.dz);
r_click(&action2);
}
}
}
/* NOT REACHED */
}