xref: /freebsd/usr.sbin/moused/moused.c (revision 6ef644f5889afbd0f681b08ed1a2f369524af83e)
1 /**
2  ** SPDX-License-Identifier: BSD-4-Clause
3  **
4  ** Copyright (c) 1995 Michael Smith, All rights reserved.
5  **
6  ** Redistribution and use in source and binary forms, with or without
7  ** modification, are permitted provided that the following conditions
8  ** are met:
9  ** 1. Redistributions of source code must retain the above copyright
10  **    notice, this list of conditions and the following disclaimer as
11  **    the first lines of this file unmodified.
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  ** 3. All advertising materials mentioning features or use of this software
16  **    must display the following acknowledgment:
17  **      This product includes software developed by Michael Smith.
18  ** 4. The name of the author may not be used to endorse or promote products
19  **    derived from this software without specific prior written permission.
20  **
21  **
22  ** THIS SOFTWARE IS PROVIDED BY Michael Smith ``AS IS'' AND ANY
23  ** EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25  ** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Michael Smith BE LIABLE FOR
26  ** ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27  ** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28  ** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
29  ** BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30  ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
31  ** OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
32  ** EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33  **
34  **/
35 
36 /**
37  ** MOUSED.C
38  **
39  ** Mouse daemon : listens to a serial port, the bus mouse interface, or
40  ** the PS/2 mouse port for mouse data stream, interprets data and passes
41  ** ioctls off to the console driver.
42  **
43  ** The mouse interface functions are derived closely from the mouse
44  ** handler in the XFree86 X server.  Many thanks to the XFree86 people
45  ** for their great work!
46  **
47  **/
48 
49 #include <sys/cdefs.h>
50 #include <sys/param.h>
51 #include <sys/consio.h>
52 #include <sys/mouse.h>
53 #include <sys/socket.h>
54 #include <sys/stat.h>
55 #include <sys/time.h>
56 #include <sys/un.h>
57 
58 #include <ctype.h>
59 #include <err.h>
60 #include <errno.h>
61 #include <fcntl.h>
62 #include <libutil.h>
63 #include <limits.h>
64 #include <setjmp.h>
65 #include <signal.h>
66 #include <stdarg.h>
67 #include <stdint.h>
68 #include <stdio.h>
69 #include <stdlib.h>
70 #include <string.h>
71 #include <syslog.h>
72 #include <termios.h>
73 #include <unistd.h>
74 #include <math.h>
75 
76 #define MAX_CLICKTHRESHOLD	2000	/* 2 seconds */
77 #define MAX_BUTTON2TIMEOUT	2000	/* 2 seconds */
78 #define DFLT_CLICKTHRESHOLD	 500	/* 0.5 second */
79 #define DFLT_BUTTON2TIMEOUT	 100	/* 0.1 second */
80 #define DFLT_SCROLLTHRESHOLD	   3	/* 3 pixels */
81 #define DFLT_SCROLLSPEED	   2	/* 2 pixels */
82 
83 /* Abort 3-button emulation delay after this many movement events. */
84 #define BUTTON2_MAXMOVE	3
85 
86 #define TRUE		1
87 #define FALSE		0
88 
89 #define MOUSE_XAXIS	(-1)
90 #define MOUSE_YAXIS	(-2)
91 
92 /* Logitech PS2++ protocol */
93 #define MOUSE_PS2PLUS_CHECKBITS(b)	\
94 			((((b[2] & 0x03) << 2) | 0x02) == (b[1] & 0x0f))
95 #define MOUSE_PS2PLUS_PACKET_TYPE(b)	\
96 			(((b[0] & 0x30) >> 2) | ((b[1] & 0x30) >> 4))
97 
98 #define	ChordMiddle	0x0001
99 #define Emulate3Button	0x0002
100 #define ClearDTR	0x0004
101 #define ClearRTS	0x0008
102 #define NoPnP		0x0010
103 #define VirtualScroll	0x0020
104 #define HVirtualScroll	0x0040
105 #define ExponentialAcc	0x0080
106 
107 #define ID_NONE		0
108 #define ID_PORT		1
109 #define ID_IF		2
110 #define ID_TYPE		4
111 #define ID_MODEL	8
112 #define ID_ALL		(ID_PORT | ID_IF | ID_TYPE | ID_MODEL)
113 
114 /* Operations on timespecs */
115 #define	tsclr(tvp)	((tvp)->tv_sec = (tvp)->tv_nsec = 0)
116 #define	tscmp(tvp, uvp, cmp)						\
117 	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
118 	    ((tvp)->tv_nsec cmp (uvp)->tv_nsec) :			\
119 	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
120 #define	tssub(tvp, uvp, vvp)						\
121 	do {								\
122 		(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;		\
123 		(vvp)->tv_nsec = (tvp)->tv_nsec - (uvp)->tv_nsec;	\
124 		if ((vvp)->tv_nsec < 0) {				\
125 			(vvp)->tv_sec--;				\
126 			(vvp)->tv_nsec += 1000000000;			\
127 		}							\
128 	} while (0)
129 
130 #define debug(...) do {						\
131 	if (debug && nodaemon)					\
132 		warnx(__VA_ARGS__);				\
133 } while (0)
134 
135 #define logerr(e, ...) do {					\
136 	log_or_warn(LOG_DAEMON | LOG_ERR, errno, __VA_ARGS__);	\
137 	exit(e);						\
138 } while (0)
139 
140 #define logerrx(e, ...) do {					\
141 	log_or_warn(LOG_DAEMON | LOG_ERR, 0, __VA_ARGS__);	\
142 	exit(e);						\
143 } while (0)
144 
145 #define logwarn(...)						\
146 	log_or_warn(LOG_DAEMON | LOG_WARNING, errno, __VA_ARGS__)
147 
148 #define logwarnx(...)						\
149 	log_or_warn(LOG_DAEMON | LOG_WARNING, 0, __VA_ARGS__)
150 
151 /* structures */
152 
153 /* symbol table entry */
154 typedef struct {
155     const char *name;
156     int val;
157     int val2;
158 } symtab_t;
159 
160 /* serial PnP ID string */
161 typedef struct {
162     int revision;	/* PnP revision, 100 for 1.00 */
163     const char *eisaid;	/* EISA ID including mfr ID and product ID */
164     char *serial;	/* serial No, optional */
165     const char *class;	/* device class, optional */
166     char *compat;	/* list of compatible drivers, optional */
167     char *description;	/* product description, optional */
168     int neisaid;	/* length of the above fields... */
169     int nserial;
170     int nclass;
171     int ncompat;
172     int ndescription;
173 } pnpid_t;
174 
175 /* global variables */
176 
177 static int	debug = 0;
178 static int	nodaemon = FALSE;
179 static int	background = FALSE;
180 static int	paused = FALSE;
181 static int	identify = ID_NONE;
182 static int	extioctl = FALSE;
183 static const char *pidfile = "/var/run/moused.pid";
184 static struct pidfh *pfh;
185 
186 #define SCROLL_NOTSCROLLING	0
187 #define SCROLL_PREPARE		1
188 #define SCROLL_SCROLLING	2
189 
190 static int	scroll_state;
191 static int	scroll_movement;
192 static int	hscroll_movement;
193 
194 /* local variables */
195 
196 /* interface (the table must be ordered by MOUSE_IF_XXX in mouse.h) */
197 static symtab_t rifs[] = {
198     { "serial",		MOUSE_IF_SERIAL,	0 },
199     { "ps/2",		MOUSE_IF_PS2,		0 },
200     { "sysmouse",	MOUSE_IF_SYSMOUSE,	0 },
201     { "usb",		MOUSE_IF_USB,		0 },
202     { NULL,		MOUSE_IF_UNKNOWN,	0 },
203 };
204 
205 /* types (the table must be ordered by MOUSE_PROTO_XXX in mouse.h) */
206 static const char *rnames[] = {
207     "microsoft",
208     "mousesystems",
209     "logitech",
210     "mmseries",
211     "mouseman",
212     "wasbusmouse",
213     "wasinportmouse",
214     "ps/2",
215     "mmhitab",
216     "glidepoint",
217     "intellimouse",
218     "thinkingmouse",
219     "sysmouse",
220     "x10mouseremote",
221     "kidspad",
222     "versapad",
223     "jogdial",
224 #if notyet
225     "mariqua",
226 #endif
227     "gtco_digipad",
228     NULL
229 };
230 
231 /* models */
232 static symtab_t	rmodels[] = {
233     { "NetScroll",		MOUSE_MODEL_NETSCROLL,		0 },
234     { "NetMouse/NetScroll Optical", MOUSE_MODEL_NET,		0 },
235     { "GlidePoint",		MOUSE_MODEL_GLIDEPOINT,		0 },
236     { "ThinkingMouse",		MOUSE_MODEL_THINK,		0 },
237     { "IntelliMouse",		MOUSE_MODEL_INTELLI,		0 },
238     { "EasyScroll/SmartScroll",	MOUSE_MODEL_EASYSCROLL,		0 },
239     { "MouseMan+",		MOUSE_MODEL_MOUSEMANPLUS,	0 },
240     { "Kidspad",		MOUSE_MODEL_KIDSPAD,		0 },
241     { "VersaPad",		MOUSE_MODEL_VERSAPAD,		0 },
242     { "IntelliMouse Explorer",	MOUSE_MODEL_EXPLORER,		0 },
243     { "4D Mouse",		MOUSE_MODEL_4D,			0 },
244     { "4D+ Mouse",		MOUSE_MODEL_4DPLUS,		0 },
245     { "Synaptics Touchpad",	MOUSE_MODEL_SYNAPTICS,		0 },
246     { "TrackPoint",		MOUSE_MODEL_TRACKPOINT,		0 },
247     { "Elantech Touchpad",	MOUSE_MODEL_ELANTECH,		0 },
248     { "generic",		MOUSE_MODEL_GENERIC,		0 },
249     { NULL,			MOUSE_MODEL_UNKNOWN,		0 },
250 };
251 
252 /* PnP EISA/product IDs */
253 static symtab_t pnpprod[] = {
254     /* Kensignton ThinkingMouse */
255     { "KML0001",	MOUSE_PROTO_THINK,	MOUSE_MODEL_THINK },
256     /* MS IntelliMouse */
257     { "MSH0001",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
258     /* MS IntelliMouse TrackBall */
259     { "MSH0004",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
260     /* Tremon Wheel Mouse MUSD */
261     { "HTK0001",        MOUSE_PROTO_INTELLI,    MOUSE_MODEL_INTELLI },
262     /* Genius PnP Mouse */
263     { "KYE0001",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
264     /* MouseSystems SmartScroll Mouse (OEM from Genius?) */
265     { "KYE0002",	MOUSE_PROTO_MS,		MOUSE_MODEL_EASYSCROLL },
266     /* Genius NetMouse */
267     { "KYE0003",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_NET },
268     /* Genius Kidspad, Easypad and other tablets */
269     { "KYE0005",	MOUSE_PROTO_KIDSPAD,	MOUSE_MODEL_KIDSPAD },
270     /* Genius EZScroll */
271     { "KYEEZ00",	MOUSE_PROTO_MS,		MOUSE_MODEL_EASYSCROLL },
272     /* Logitech Cordless MouseMan Wheel */
273     { "LGI8033",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
274     /* Logitech MouseMan (new 4 button model) */
275     { "LGI800C",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
276     /* Logitech MouseMan+ */
277     { "LGI8050",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
278     /* Logitech FirstMouse+ */
279     { "LGI8051",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
280     /* Logitech serial */
281     { "LGI8001",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
282     /* A4 Tech 4D/4D+ Mouse */
283     { "A4W0005",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_4D },
284     /* 8D Scroll Mouse */
285     { "PEC9802",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
286     /* Mitsumi Wireless Scroll Mouse */
287     { "MTM6401",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
288 
289     /* MS serial */
290     { "PNP0F01",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
291     /* MS PS/2 */
292     { "PNP0F03",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
293     /*
294      * EzScroll returns PNP0F04 in the compatible device field; but it
295      * doesn't look compatible... XXX
296      */
297     /* MouseSystems */
298     { "PNP0F04",	MOUSE_PROTO_MSC,	MOUSE_MODEL_GENERIC },
299     /* MouseSystems */
300     { "PNP0F05",	MOUSE_PROTO_MSC,	MOUSE_MODEL_GENERIC },
301 #if notyet
302     /* Genius Mouse */
303     { "PNP0F06",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
304     /* Genius Mouse */
305     { "PNP0F07",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
306 #endif
307     /* Logitech serial */
308     { "PNP0F08",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
309     /* MS BallPoint serial */
310     { "PNP0F09",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
311     /* MS PnP serial */
312     { "PNP0F0A",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
313     /* MS PnP BallPoint serial */
314     { "PNP0F0B",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
315     /* MS serial compatible */
316     { "PNP0F0C",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
317     /* MS PS/2 compatible */
318     { "PNP0F0E",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
319     /* MS BallPoint compatible */
320     { "PNP0F0F",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
321 #if notyet
322     /* TI QuickPort */
323     { "PNP0F10",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
324 #endif
325     /* Logitech PS/2 */
326     { "PNP0F12",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
327     /* PS/2 */
328     { "PNP0F13",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
329 #if notyet
330     /* MS Kids Mouse */
331     { "PNP0F14",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
332 #endif
333 #if notyet
334     /* Logitech SWIFT */
335     { "PNP0F16",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
336 #endif
337     /* Logitech serial compat */
338     { "PNP0F17",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
339     /* Logitech PS/2 compatible */
340     { "PNP0F19",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
341 #if notyet
342     /* Logitech SWIFT compatible */
343     { "PNP0F1A",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
344     /* HP Omnibook */
345     { "PNP0F1B",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
346     /* Compaq LTE TrackBall PS/2 */
347     { "PNP0F1C",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
348     /* Compaq LTE TrackBall serial */
349     { "PNP0F1D",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
350     /* MS Kidts Trackball */
351     { "PNP0F1E",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
352 #endif
353     /* Interlink VersaPad */
354     { "LNK0001",	MOUSE_PROTO_VERSAPAD,	MOUSE_MODEL_VERSAPAD },
355 
356     { NULL,		MOUSE_PROTO_UNKNOWN,	MOUSE_MODEL_GENERIC },
357 };
358 
359 /* the table must be ordered by MOUSE_PROTO_XXX in mouse.h */
360 static unsigned short rodentcflags[] =
361 {
362     (CS7	           | CREAD | CLOCAL | HUPCL),	/* MicroSoft */
363     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL),	/* MouseSystems */
364     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL),	/* Logitech */
365     (CS8 | PARENB | PARODD | CREAD | CLOCAL | HUPCL),	/* MMSeries */
366     (CS7		   | CREAD | CLOCAL | HUPCL),	/* MouseMan */
367     0,							/* Bus */
368     0,							/* InPort */
369     0,							/* PS/2 */
370     (CS8		   | CREAD | CLOCAL | HUPCL),	/* MM HitTablet */
371     (CS7	           | CREAD | CLOCAL | HUPCL),	/* GlidePoint */
372     (CS7                   | CREAD | CLOCAL | HUPCL),	/* IntelliMouse */
373     (CS7                   | CREAD | CLOCAL | HUPCL),	/* Thinking Mouse */
374     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL),	/* sysmouse */
375     (CS7	           | CREAD | CLOCAL | HUPCL),	/* X10 MouseRemote */
376     (CS8 | PARENB | PARODD | CREAD | CLOCAL | HUPCL),	/* kidspad etc. */
377     (CS8		   | CREAD | CLOCAL | HUPCL),	/* VersaPad */
378     0,							/* JogDial */
379 #if notyet
380     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL),	/* Mariqua */
381 #endif
382     (CS8		   | CREAD |	      HUPCL ),	/* GTCO Digi-Pad */
383 };
384 
385 static struct rodentparam {
386     int flags;
387     const char *portname;	/* /dev/XXX */
388     int rtype;			/* MOUSE_PROTO_XXX */
389     int level;			/* operation level: 0 or greater */
390     int baudrate;
391     int rate;			/* report rate */
392     int resolution;		/* MOUSE_RES_XXX or a positive number */
393     int zmap[4];		/* MOUSE_{X|Y}AXIS or a button number */
394     int wmode;			/* wheel mode button number */
395     int mfd;			/* mouse file descriptor */
396     int cfd;			/* /dev/consolectl file descriptor */
397     int mremsfd;		/* mouse remote server file descriptor */
398     int mremcfd;		/* mouse remote client file descriptor */
399     int is_removable;		/* set if device is removable, like USB */
400     long clickthreshold;	/* double click speed in msec */
401     long button2timeout;	/* 3 button emulation timeout */
402     mousehw_t hw;		/* mouse device hardware information */
403     mousemode_t mode;		/* protocol information */
404     float accelx;		/* Acceleration in the X axis */
405     float accely;		/* Acceleration in the Y axis */
406     float expoaccel;		/* Exponential acceleration */
407     float expoffset;		/* Movement offset for exponential accel. */
408     float remainx;		/* Remainder on X and Y axis, respectively... */
409     float remainy;		/*    ... to compensate for rounding errors. */
410     int scrollthreshold;	/* Movement distance before virtual scrolling */
411     int scrollspeed;		/* Movement distance to rate of scrolling */
412 } rodent = {
413     .flags = 0,
414     .portname = NULL,
415     .rtype = MOUSE_PROTO_UNKNOWN,
416     .level = -1,
417     .baudrate = 1200,
418     .rate = 0,
419     .resolution = MOUSE_RES_UNKNOWN,
420     .zmap = { 0, 0, 0, 0 },
421     .wmode = 0,
422     .mfd = -1,
423     .cfd = -1,
424     .mremsfd = -1,
425     .mremcfd = -1,
426     .is_removable = 0,
427     .clickthreshold = DFLT_CLICKTHRESHOLD,
428     .button2timeout = DFLT_BUTTON2TIMEOUT,
429     .accelx = 1.0,
430     .accely = 1.0,
431     .expoaccel = 1.0,
432     .expoffset = 1.0,
433     .remainx = 0.0,
434     .remainy = 0.0,
435     .scrollthreshold = DFLT_SCROLLTHRESHOLD,
436     .scrollspeed = DFLT_SCROLLSPEED,
437 };
438 
439 /* button status */
440 struct button_state {
441     int count;		/* 0: up, 1: single click, 2: double click,... */
442     struct timespec ts;	/* timestamp on the last button event */
443 };
444 static struct button_state	bstate[MOUSE_MAXBUTTON];	/* button state */
445 static struct button_state	*mstate[MOUSE_MAXBUTTON];/* mapped button st.*/
446 static struct button_state	zstate[4];		 /* Z/W axis state */
447 
448 /* state machine for 3 button emulation */
449 
450 #define S0	0	/* start */
451 #define S1	1	/* button 1 delayed down */
452 #define S2	2	/* button 3 delayed down */
453 #define S3	3	/* both buttons down -> button 2 down */
454 #define S4	4	/* button 1 delayed up */
455 #define S5	5	/* button 1 down */
456 #define S6	6	/* button 3 down */
457 #define S7	7	/* both buttons down */
458 #define S8	8	/* button 3 delayed up */
459 #define S9	9	/* button 1 or 3 up after S3 */
460 
461 #define A(b1, b3)	(((b1) ? 2 : 0) | ((b3) ? 1 : 0))
462 #define A_TIMEOUT	4
463 #define S_DELAYED(st)	(states[st].s[A_TIMEOUT] != (st))
464 
465 static struct {
466     int s[A_TIMEOUT + 1];
467     int buttons;
468     int mask;
469     int timeout;
470 } states[10] = {
471     /* S0 */
472     { { S0, S2, S1, S3, S0 }, 0, ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN), FALSE },
473     /* S1 */
474     { { S4, S2, S1, S3, S5 }, 0, ~MOUSE_BUTTON1DOWN, FALSE },
475     /* S2 */
476     { { S8, S2, S1, S3, S6 }, 0, ~MOUSE_BUTTON3DOWN, FALSE },
477     /* S3 */
478     { { S0, S9, S9, S3, S3 }, MOUSE_BUTTON2DOWN, ~0, FALSE },
479     /* S4 */
480     { { S0, S2, S1, S3, S0 }, MOUSE_BUTTON1DOWN, ~0, TRUE },
481     /* S5 */
482     { { S0, S2, S5, S7, S5 }, MOUSE_BUTTON1DOWN, ~0, FALSE },
483     /* S6 */
484     { { S0, S6, S1, S7, S6 }, MOUSE_BUTTON3DOWN, ~0, FALSE },
485     /* S7 */
486     { { S0, S6, S5, S7, S7 }, MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN, ~0, FALSE },
487     /* S8 */
488     { { S0, S2, S1, S3, S0 }, MOUSE_BUTTON3DOWN, ~0, TRUE },
489     /* S9 */
490     { { S0, S9, S9, S3, S9 }, 0, ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN), FALSE },
491 };
492 static int		mouse_button_state;
493 static struct timespec	mouse_button_state_ts;
494 static int		mouse_move_delayed;
495 
496 static jmp_buf env;
497 
498 struct drift_xy {
499     int x;
500     int y;
501 };
502 static int		drift_distance = 4;	/* max steps X+Y */
503 static int		drift_time = 500;	/* in 0.5 sec */
504 static struct timespec	drift_time_ts;
505 static struct timespec	drift_2time_ts;		/* 2*drift_time */
506 static int		drift_after = 4000;	/* 4 sec */
507 static struct timespec	drift_after_ts;
508 static int		drift_terminate = FALSE;
509 static struct timespec	drift_current_ts;
510 static struct timespec	drift_tmp;
511 static struct timespec	drift_last_activity = {0, 0};
512 static struct timespec	drift_since = {0, 0};
513 static struct drift_xy	drift_last = {0, 0};	/* steps in last drift_time */
514 static struct drift_xy  drift_previous = {0, 0};	/* steps in prev. drift_time */
515 
516 /* function prototypes */
517 
518 static void	linacc(int, int, int*, int*);
519 static void	expoacc(int, int, int*, int*);
520 static void	moused(void);
521 static void	hup(int sig);
522 static void	cleanup(int sig);
523 static void	pause_mouse(int sig);
524 static void	usage(void);
525 static void	log_or_warn(int log_pri, int errnum, const char *fmt, ...)
526 		    __printflike(3, 4);
527 
528 static int	r_identify(void);
529 static const char *r_if(int type);
530 static const char *r_name(int type);
531 static const char *r_model(int model);
532 static void	r_init(void);
533 static int	r_protocol(u_char b, mousestatus_t *act);
534 static int	r_statetrans(mousestatus_t *a1, mousestatus_t *a2, int trans);
535 static int	r_installmap(char *arg);
536 static void	r_map(mousestatus_t *act1, mousestatus_t *act2);
537 static void	r_timestamp(mousestatus_t *act);
538 static int	r_timeout(void);
539 static void	r_click(mousestatus_t *act);
540 static void	setmousespeed(int old, int new, unsigned cflag);
541 
542 static int	pnpwakeup1(void);
543 static int	pnpwakeup2(void);
544 static int	pnpgets(char *buf);
545 static int	pnpparse(pnpid_t *id, char *buf, int len);
546 static symtab_t	*pnpproto(pnpid_t *id);
547 
548 static symtab_t	*gettoken(symtab_t *tab, const char *s, int len);
549 static const char *gettokenname(symtab_t *tab, int val);
550 
551 static void	mremote_serversetup(void);
552 static void	mremote_clientchg(int add);
553 
554 static int	kidspad(u_char rxc, mousestatus_t *act);
555 static int	gtco_digipad(u_char, mousestatus_t *);
556 
557 int
558 main(int argc, char *argv[])
559 {
560     int c;
561     int	i;
562     int	j;
563 
564     for (i = 0; i < MOUSE_MAXBUTTON; ++i)
565 	mstate[i] = &bstate[i];
566 
567     while ((c = getopt(argc, argv, "3A:C:DE:F:HI:L:PRS:T:VU:a:cdfhi:l:m:p:r:st:w:z:")) != -1)
568 	switch(c) {
569 
570 	case '3':
571 	    rodent.flags |= Emulate3Button;
572 	    break;
573 
574 	case 'E':
575 	    rodent.button2timeout = atoi(optarg);
576 	    if ((rodent.button2timeout < 0) ||
577 		(rodent.button2timeout > MAX_BUTTON2TIMEOUT)) {
578 		warnx("invalid argument `%s'", optarg);
579 		usage();
580 	    }
581 	    break;
582 
583 	case 'a':
584 	    i = sscanf(optarg, "%f,%f", &rodent.accelx, &rodent.accely);
585 	    if (i == 0) {
586 		warnx("invalid linear acceleration argument '%s'", optarg);
587 		usage();
588 	    }
589 
590 	    if (i == 1)
591 		rodent.accely = rodent.accelx;
592 
593 	    break;
594 
595 	case 'A':
596 	    rodent.flags |= ExponentialAcc;
597 	    i = sscanf(optarg, "%f,%f", &rodent.expoaccel, &rodent.expoffset);
598 	    if (i == 0) {
599 		warnx("invalid exponential acceleration argument '%s'", optarg);
600 		usage();
601 	    }
602 
603 	    if (i == 1)
604 		rodent.expoffset = 1.0;
605 
606 	    break;
607 
608 	case 'c':
609 	    rodent.flags |= ChordMiddle;
610 	    break;
611 
612 	case 'd':
613 	    ++debug;
614 	    break;
615 
616 	case 'f':
617 	    nodaemon = TRUE;
618 	    break;
619 
620 	case 'i':
621 	    if (strcmp(optarg, "all") == 0)
622 		identify = ID_ALL;
623 	    else if (strcmp(optarg, "port") == 0)
624 		identify = ID_PORT;
625 	    else if (strcmp(optarg, "if") == 0)
626 		identify = ID_IF;
627 	    else if (strcmp(optarg, "type") == 0)
628 		identify = ID_TYPE;
629 	    else if (strcmp(optarg, "model") == 0)
630 		identify = ID_MODEL;
631 	    else {
632 		warnx("invalid argument `%s'", optarg);
633 		usage();
634 	    }
635 	    nodaemon = TRUE;
636 	    break;
637 
638 	case 'l':
639 	    rodent.level = atoi(optarg);
640 	    if ((rodent.level < 0) || (rodent.level > 4)) {
641 		warnx("invalid argument `%s'", optarg);
642 		usage();
643 	    }
644 	    break;
645 
646 	case 'm':
647 	    if (!r_installmap(optarg)) {
648 		warnx("invalid argument `%s'", optarg);
649 		usage();
650 	    }
651 	    break;
652 
653 	case 'p':
654 	    rodent.portname = optarg;
655 	    break;
656 
657 	case 'r':
658 	    if (strcmp(optarg, "high") == 0)
659 		rodent.resolution = MOUSE_RES_HIGH;
660 	    else if (strcmp(optarg, "medium-high") == 0)
661 		rodent.resolution = MOUSE_RES_HIGH;
662 	    else if (strcmp(optarg, "medium-low") == 0)
663 		rodent.resolution = MOUSE_RES_MEDIUMLOW;
664 	    else if (strcmp(optarg, "low") == 0)
665 		rodent.resolution = MOUSE_RES_LOW;
666 	    else if (strcmp(optarg, "default") == 0)
667 		rodent.resolution = MOUSE_RES_DEFAULT;
668 	    else {
669 		rodent.resolution = atoi(optarg);
670 		if (rodent.resolution <= 0) {
671 		    warnx("invalid argument `%s'", optarg);
672 		    usage();
673 		}
674 	    }
675 	    break;
676 
677 	case 's':
678 	    rodent.baudrate = 9600;
679 	    break;
680 
681 	case 'w':
682 	    i = atoi(optarg);
683 	    if ((i <= 0) || (i > MOUSE_MAXBUTTON)) {
684 		warnx("invalid argument `%s'", optarg);
685 		usage();
686 	    }
687 	    rodent.wmode = 1 << (i - 1);
688 	    break;
689 
690 	case 'z':
691 	    if (strcmp(optarg, "x") == 0)
692 		rodent.zmap[0] = MOUSE_XAXIS;
693 	    else if (strcmp(optarg, "y") == 0)
694 		rodent.zmap[0] = MOUSE_YAXIS;
695 	    else {
696 		i = atoi(optarg);
697 		/*
698 		 * Use button i for negative Z axis movement and
699 		 * button (i + 1) for positive Z axis movement.
700 		 */
701 		if ((i <= 0) || (i > MOUSE_MAXBUTTON - 1)) {
702 		    warnx("invalid argument `%s'", optarg);
703 		    usage();
704 		}
705 		rodent.zmap[0] = i;
706 		rodent.zmap[1] = i + 1;
707 		debug("optind: %d, optarg: '%s'", optind, optarg);
708 		for (j = 1; j < 4; ++j) {
709 		    if ((optind >= argc) || !isdigit(*argv[optind]))
710 			break;
711 		    i = atoi(argv[optind]);
712 		    if ((i <= 0) || (i > MOUSE_MAXBUTTON - 1)) {
713 			warnx("invalid argument `%s'", argv[optind]);
714 			usage();
715 		    }
716 		    rodent.zmap[j] = i;
717 		    ++optind;
718 		}
719 		if ((rodent.zmap[2] != 0) && (rodent.zmap[3] == 0))
720 		    rodent.zmap[3] = rodent.zmap[2] + 1;
721 	    }
722 	    break;
723 
724 	case 'C':
725 	    rodent.clickthreshold = atoi(optarg);
726 	    if ((rodent.clickthreshold < 0) ||
727 		(rodent.clickthreshold > MAX_CLICKTHRESHOLD)) {
728 		warnx("invalid argument `%s'", optarg);
729 		usage();
730 	    }
731 	    break;
732 
733 	case 'D':
734 	    rodent.flags |= ClearDTR;
735 	    break;
736 
737 	case 'F':
738 	    rodent.rate = atoi(optarg);
739 	    if (rodent.rate <= 0) {
740 		warnx("invalid argument `%s'", optarg);
741 		usage();
742 	    }
743 	    break;
744 
745 	case 'H':
746 	    rodent.flags |= HVirtualScroll;
747 	    break;
748 
749 	case 'I':
750 	    pidfile = optarg;
751 	    break;
752 
753 	case 'L':
754 	    rodent.scrollspeed = atoi(optarg);
755 	    if (rodent.scrollspeed < 0) {
756 		warnx("invalid argument `%s'", optarg);
757 		usage();
758 	    }
759 	    break;
760 
761 	case 'P':
762 	    rodent.flags |= NoPnP;
763 	    break;
764 
765 	case 'R':
766 	    rodent.flags |= ClearRTS;
767 	    break;
768 
769 	case 'S':
770 	    rodent.baudrate = atoi(optarg);
771 	    if (rodent.baudrate <= 0) {
772 		warnx("invalid argument `%s'", optarg);
773 		usage();
774 	    }
775 	    debug("rodent baudrate %d", rodent.baudrate);
776 	    break;
777 
778 	case 'T':
779 	    drift_terminate = TRUE;
780 	    sscanf(optarg, "%d,%d,%d", &drift_distance, &drift_time,
781 		&drift_after);
782 	    if (drift_distance <= 0 || drift_time <= 0 || drift_after <= 0) {
783 		warnx("invalid argument `%s'", optarg);
784 		usage();
785 	    }
786 	    debug("terminate drift: distance %d, time %d, after %d",
787 		drift_distance, drift_time, drift_after);
788 	    drift_time_ts.tv_sec = drift_time / 1000;
789 	    drift_time_ts.tv_nsec = (drift_time % 1000) * 1000000;
790  	    drift_2time_ts.tv_sec = (drift_time *= 2) / 1000;
791 	    drift_2time_ts.tv_nsec = (drift_time % 1000) * 1000000;
792 	    drift_after_ts.tv_sec = drift_after / 1000;
793 	    drift_after_ts.tv_nsec = (drift_after % 1000) * 1000000;
794 	    break;
795 
796 	case 't':
797 	    if (strcmp(optarg, "auto") == 0) {
798 		rodent.rtype = MOUSE_PROTO_UNKNOWN;
799 		rodent.flags &= ~NoPnP;
800 		rodent.level = -1;
801 		break;
802 	    }
803 	    for (i = 0; rnames[i] != NULL; i++)
804 		if (strcmp(optarg, rnames[i]) == 0) {
805 		    rodent.rtype = i;
806 		    rodent.flags |= NoPnP;
807 		    rodent.level = (i == MOUSE_PROTO_SYSMOUSE) ? 1 : 0;
808 		    break;
809 		}
810 	    if (rnames[i] == NULL) {
811 		warnx("no such mouse type `%s'", optarg);
812 		usage();
813 	    }
814 	    break;
815 
816 	case 'V':
817 	    rodent.flags |= VirtualScroll;
818 	    break;
819 	case 'U':
820 	    rodent.scrollthreshold = atoi(optarg);
821 	    if (rodent.scrollthreshold < 0) {
822 		warnx("invalid argument `%s'", optarg);
823 		usage();
824 	    }
825 	    break;
826 
827 	case 'h':
828 	case '?':
829 	default:
830 	    usage();
831 	}
832 
833     /* fix Z axis mapping */
834     for (i = 0; i < 4; ++i) {
835 	if (rodent.zmap[i] > 0) {
836 	    for (j = 0; j < MOUSE_MAXBUTTON; ++j) {
837 		if (mstate[j] == &bstate[rodent.zmap[i] - 1])
838 		    mstate[j] = &zstate[i];
839 	    }
840 	    rodent.zmap[i] = 1 << (rodent.zmap[i] - 1);
841 	}
842     }
843 
844     /* the default port name */
845     switch(rodent.rtype) {
846 
847     case MOUSE_PROTO_PS2:
848 	if (!rodent.portname)
849 	    rodent.portname = "/dev/psm0";
850 	break;
851 
852     default:
853 	if (rodent.portname)
854 	    break;
855 	warnx("no port name specified");
856 	usage();
857     }
858 
859     if (strncmp(rodent.portname, "/dev/ums", 8) == 0)
860 	rodent.is_removable = 1;
861 
862     for (;;) {
863 	if (setjmp(env) == 0) {
864 	    signal(SIGHUP, hup);
865 	    signal(SIGINT , cleanup);
866 	    signal(SIGQUIT, cleanup);
867 	    signal(SIGTERM, cleanup);
868 	    signal(SIGUSR1, pause_mouse);
869 
870 	    rodent.mfd = open(rodent.portname, O_RDWR | O_NONBLOCK);
871 	    if (rodent.mfd == -1)
872 		logerr(1, "unable to open %s", rodent.portname);
873 	    if (r_identify() == MOUSE_PROTO_UNKNOWN) {
874 		logwarnx("cannot determine mouse type on %s", rodent.portname);
875 		close(rodent.mfd);
876 		rodent.mfd = -1;
877 	    }
878 
879 	    /* print some information */
880 	    if (identify != ID_NONE) {
881 		if (identify == ID_ALL)
882 		    printf("%s %s %s %s\n",
883 			rodent.portname, r_if(rodent.hw.iftype),
884 			r_name(rodent.rtype), r_model(rodent.hw.model));
885 		else if (identify & ID_PORT)
886 		    printf("%s\n", rodent.portname);
887 		else if (identify & ID_IF)
888 		    printf("%s\n", r_if(rodent.hw.iftype));
889 		else if (identify & ID_TYPE)
890 		    printf("%s\n", r_name(rodent.rtype));
891 		else if (identify & ID_MODEL)
892 		    printf("%s\n", r_model(rodent.hw.model));
893 		exit(0);
894 	    } else {
895 		debug("port: %s  interface: %s  type: %s  model: %s",
896 		    rodent.portname, r_if(rodent.hw.iftype),
897 		    r_name(rodent.rtype), r_model(rodent.hw.model));
898 	    }
899 
900 	    if (rodent.mfd == -1) {
901 		/*
902 		 * We cannot continue because of error.  Exit if the
903 		 * program has not become a daemon.  Otherwise, block
904 		 * until the user corrects the problem and issues SIGHUP.
905 		 */
906 		if (!background)
907 		    exit(1);
908 		sigpause(0);
909 	    }
910 
911 	    r_init();			/* call init function */
912 	    moused();
913 	}
914 
915 	if (rodent.mfd != -1)
916 	    close(rodent.mfd);
917 	if (rodent.cfd != -1)
918 	    close(rodent.cfd);
919 	rodent.mfd = rodent.cfd = -1;
920 	if (rodent.is_removable)
921 		exit(0);
922     }
923     /* NOT REACHED */
924 
925     exit(0);
926 }
927 
928 /*
929  * Function to calculate linear acceleration.
930  *
931  * If there are any rounding errors, the remainder
932  * is stored in the remainx and remainy variables
933  * and taken into account upon the next movement.
934  */
935 
936 static void
937 linacc(int dx, int dy, int *movex, int *movey)
938 {
939     float fdx, fdy;
940 
941     if (dx == 0 && dy == 0) {
942 	*movex = *movey = 0;
943 	return;
944     }
945     fdx = dx * rodent.accelx + rodent.remainx;
946     fdy = dy * rodent.accely + rodent.remainy;
947     *movex = lround(fdx);
948     *movey = lround(fdy);
949     rodent.remainx = fdx - *movex;
950     rodent.remainy = fdy - *movey;
951 }
952 
953 /*
954  * Function to calculate exponential acceleration.
955  * (Also includes linear acceleration if enabled.)
956  *
957  * In order to give a smoother behaviour, we record the four
958  * most recent non-zero movements and use their average value
959  * to calculate the acceleration.
960  */
961 
962 static void
963 expoacc(int dx, int dy, int *movex, int *movey)
964 {
965     static float lastlength[3] = {0.0, 0.0, 0.0};
966     float fdx, fdy, length, lbase, accel;
967 
968     if (dx == 0 && dy == 0) {
969 	*movex = *movey = 0;
970 	return;
971     }
972     fdx = dx * rodent.accelx;
973     fdy = dy * rodent.accely;
974     length = sqrtf((fdx * fdx) + (fdy * fdy));		/* Pythagoras */
975     length = (length + lastlength[0] + lastlength[1] + lastlength[2]) / 4;
976     lbase = length / rodent.expoffset;
977     accel = powf(lbase, rodent.expoaccel) / lbase;
978     fdx = fdx * accel + rodent.remainx;
979     fdy = fdy * accel + rodent.remainy;
980     *movex = lroundf(fdx);
981     *movey = lroundf(fdy);
982     rodent.remainx = fdx - *movex;
983     rodent.remainy = fdy - *movey;
984     lastlength[2] = lastlength[1];
985     lastlength[1] = lastlength[0];
986     lastlength[0] = length;	/* Insert new average, not original length! */
987 }
988 
989 static void
990 moused(void)
991 {
992     struct mouse_info mouse;
993     mousestatus_t action0;		/* original mouse action */
994     mousestatus_t action;		/* interim buffer */
995     mousestatus_t action2;		/* mapped action */
996     struct timeval timeout;
997     fd_set fds;
998     u_char b;
999     pid_t mpid;
1000     int flags;
1001     int c;
1002     int i;
1003 
1004     if ((rodent.cfd = open("/dev/consolectl", O_RDWR, 0)) == -1)
1005 	logerr(1, "cannot open /dev/consolectl");
1006 
1007     if (!nodaemon && !background) {
1008 	pfh = pidfile_open(pidfile, 0600, &mpid);
1009 	if (pfh == NULL) {
1010 	    if (errno == EEXIST)
1011 		logerrx(1, "moused already running, pid: %d", mpid);
1012 	    logwarn("cannot open pid file");
1013 	}
1014 	if (daemon(0, 0)) {
1015 	    int saved_errno = errno;
1016 	    pidfile_remove(pfh);
1017 	    errno = saved_errno;
1018 	    logerr(1, "failed to become a daemon");
1019 	} else {
1020 	    background = TRUE;
1021 	    pidfile_write(pfh);
1022 	}
1023     }
1024 
1025     /* clear mouse data */
1026     bzero(&action0, sizeof(action0));
1027     bzero(&action, sizeof(action));
1028     bzero(&action2, sizeof(action2));
1029     bzero(&mouse, sizeof(mouse));
1030     mouse_button_state = S0;
1031     clock_gettime(CLOCK_MONOTONIC_FAST, &mouse_button_state_ts);
1032     mouse_move_delayed = 0;
1033     for (i = 0; i < MOUSE_MAXBUTTON; ++i) {
1034 	bstate[i].count = 0;
1035 	bstate[i].ts = mouse_button_state_ts;
1036     }
1037     for (i = 0; i < (int)(sizeof(zstate) / sizeof(zstate[0])); ++i) {
1038 	zstate[i].count = 0;
1039 	zstate[i].ts = mouse_button_state_ts;
1040     }
1041 
1042     /* choose which ioctl command to use */
1043     mouse.operation = MOUSE_MOTION_EVENT;
1044     extioctl = (ioctl(rodent.cfd, CONS_MOUSECTL, &mouse) == 0);
1045 
1046     /* process mouse data */
1047     timeout.tv_sec = 0;
1048     timeout.tv_usec = 20000;		/* 20 msec */
1049     for (;;) {
1050 
1051 	FD_ZERO(&fds);
1052 	FD_SET(rodent.mfd, &fds);
1053 	if (rodent.mremsfd >= 0)
1054 	    FD_SET(rodent.mremsfd, &fds);
1055 	if (rodent.mremcfd >= 0)
1056 	    FD_SET(rodent.mremcfd, &fds);
1057 
1058 	c = select(FD_SETSIZE, &fds, NULL, NULL,
1059 		   ((rodent.flags & Emulate3Button) &&
1060 		    S_DELAYED(mouse_button_state)) ? &timeout : NULL);
1061 	if (c < 0) {                    /* error */
1062 	    logwarn("failed to read from mouse");
1063 	    continue;
1064 	} else if (c == 0) {            /* timeout */
1065 	    /* assert(rodent.flags & Emulate3Button) */
1066 	    action0.button = action0.obutton;
1067 	    action0.dx = action0.dy = action0.dz = 0;
1068 	    action0.flags = flags = 0;
1069 	    if (r_timeout() && r_statetrans(&action0, &action, A_TIMEOUT)) {
1070 		if (debug > 2)
1071 		    debug("flags:%08x buttons:%08x obuttons:%08x",
1072 			  action.flags, action.button, action.obutton);
1073 	    } else {
1074 		action0.obutton = action0.button;
1075 		continue;
1076 	    }
1077 	} else {
1078 	    /*  MouseRemote client connect/disconnect  */
1079 	    if ((rodent.mremsfd >= 0) && FD_ISSET(rodent.mremsfd, &fds)) {
1080 		mremote_clientchg(TRUE);
1081 		continue;
1082 	    }
1083 	    if ((rodent.mremcfd >= 0) && FD_ISSET(rodent.mremcfd, &fds)) {
1084 		mremote_clientchg(FALSE);
1085 		continue;
1086 	    }
1087 	    /* mouse movement */
1088 	    if (read(rodent.mfd, &b, 1) == -1) {
1089 		if (errno == EWOULDBLOCK)
1090 		    continue;
1091 		else
1092 		    return;
1093 	    }
1094 	    if ((flags = r_protocol(b, &action0)) == 0)
1095 		continue;
1096 
1097 	    if ((rodent.flags & VirtualScroll) || (rodent.flags & HVirtualScroll)) {
1098 		/* Allow middle button drags to scroll up and down */
1099 		if (action0.button == MOUSE_BUTTON2DOWN) {
1100 		    if (scroll_state == SCROLL_NOTSCROLLING) {
1101 			scroll_state = SCROLL_PREPARE;
1102 			scroll_movement = hscroll_movement = 0;
1103 			debug("PREPARING TO SCROLL");
1104 		    }
1105 		    debug("[BUTTON2] flags:%08x buttons:%08x obuttons:%08x",
1106 			  action.flags, action.button, action.obutton);
1107 		} else {
1108 		    debug("[NOTBUTTON2] flags:%08x buttons:%08x obuttons:%08x",
1109 			  action.flags, action.button, action.obutton);
1110 
1111 		    /* This isn't a middle button down... move along... */
1112 		    if (scroll_state == SCROLL_SCROLLING) {
1113 			/*
1114 			 * We were scrolling, someone let go of button 2.
1115 			 * Now turn autoscroll off.
1116 			 */
1117 			scroll_state = SCROLL_NOTSCROLLING;
1118 			debug("DONE WITH SCROLLING / %d", scroll_state);
1119 		    } else if (scroll_state == SCROLL_PREPARE) {
1120 			mousestatus_t newaction = action0;
1121 
1122 			/* We were preparing to scroll, but we never moved... */
1123 			r_timestamp(&action0);
1124 			r_statetrans(&action0, &newaction,
1125 				     A(newaction.button & MOUSE_BUTTON1DOWN,
1126 				       action0.button & MOUSE_BUTTON3DOWN));
1127 
1128 			/* Send middle down */
1129 			newaction.button = MOUSE_BUTTON2DOWN;
1130 			r_click(&newaction);
1131 
1132 			/* Send middle up */
1133 			r_timestamp(&newaction);
1134 			newaction.obutton = newaction.button;
1135 			newaction.button = action0.button;
1136 			r_click(&newaction);
1137 		    }
1138 		}
1139 	    }
1140 
1141 	    r_timestamp(&action0);
1142 	    r_statetrans(&action0, &action,
1143 			 A(action0.button & MOUSE_BUTTON1DOWN,
1144 			   action0.button & MOUSE_BUTTON3DOWN));
1145 	    debug("flags:%08x buttons:%08x obuttons:%08x", action.flags,
1146 		  action.button, action.obutton);
1147 	}
1148 	action0.obutton = action0.button;
1149 	flags &= MOUSE_POSCHANGED;
1150 	flags |= action.obutton ^ action.button;
1151 	action.flags = flags;
1152 
1153 	if (flags) {			/* handler detected action */
1154 	    r_map(&action, &action2);
1155 	    debug("activity : buttons 0x%08x  dx %d  dy %d  dz %d",
1156 		action2.button, action2.dx, action2.dy, action2.dz);
1157 
1158 	    if ((rodent.flags & VirtualScroll) || (rodent.flags & HVirtualScroll)) {
1159 		/*
1160 		 * If *only* the middle button is pressed AND we are moving
1161 		 * the stick/trackpoint/nipple, scroll!
1162 		 */
1163 		if (scroll_state == SCROLL_PREPARE) {
1164 			/* Middle button down, waiting for movement threshold */
1165 			if (action2.dy || action2.dx) {
1166 				if (rodent.flags & VirtualScroll) {
1167 					scroll_movement += action2.dy;
1168 					if (scroll_movement < -rodent.scrollthreshold) {
1169 						scroll_state = SCROLL_SCROLLING;
1170 					} else if (scroll_movement > rodent.scrollthreshold) {
1171 						scroll_state = SCROLL_SCROLLING;
1172 					}
1173 				}
1174 				if (rodent.flags & HVirtualScroll) {
1175 					hscroll_movement += action2.dx;
1176 					if (hscroll_movement < -rodent.scrollthreshold) {
1177 						scroll_state = SCROLL_SCROLLING;
1178 					} else if (hscroll_movement > rodent.scrollthreshold) {
1179 						scroll_state = SCROLL_SCROLLING;
1180 					}
1181 				}
1182 				if (scroll_state == SCROLL_SCROLLING) scroll_movement = hscroll_movement = 0;
1183 			}
1184 		} else if (scroll_state == SCROLL_SCROLLING) {
1185 			 if (rodent.flags & VirtualScroll) {
1186 				 scroll_movement += action2.dy;
1187 				 debug("SCROLL: %d", scroll_movement);
1188 			    if (scroll_movement < -rodent.scrollspeed) {
1189 				/* Scroll down */
1190 				action2.dz = -1;
1191 				scroll_movement = 0;
1192 			    }
1193 			    else if (scroll_movement > rodent.scrollspeed) {
1194 				/* Scroll up */
1195 				action2.dz = 1;
1196 				scroll_movement = 0;
1197 			    }
1198 			 }
1199 			 if (rodent.flags & HVirtualScroll) {
1200 				 hscroll_movement += action2.dx;
1201 				 debug("HORIZONTAL SCROLL: %d", hscroll_movement);
1202 
1203 				 if (hscroll_movement < -rodent.scrollspeed) {
1204 					 action2.dz = -2;
1205 					 hscroll_movement = 0;
1206 				 }
1207 				 else if (hscroll_movement > rodent.scrollspeed) {
1208 					 action2.dz = 2;
1209 					 hscroll_movement = 0;
1210 				 }
1211 			 }
1212 
1213 		    /* Don't move while scrolling */
1214 		    action2.dx = action2.dy = 0;
1215 		}
1216 	    }
1217 
1218 	    if (drift_terminate) {
1219 		if ((flags & MOUSE_POSCHANGED) == 0 || action.dz || action2.dz)
1220 		    drift_last_activity = drift_current_ts;
1221 		else {
1222 		    /* X or/and Y movement only - possibly drift */
1223 		    tssub(&drift_current_ts, &drift_last_activity, &drift_tmp);
1224 		    if (tscmp(&drift_tmp, &drift_after_ts, >)) {
1225 			tssub(&drift_current_ts, &drift_since, &drift_tmp);
1226 			if (tscmp(&drift_tmp, &drift_time_ts, <)) {
1227 			    drift_last.x += action2.dx;
1228 			    drift_last.y += action2.dy;
1229 			} else {
1230 			    /* discard old accumulated steps (drift) */
1231 			    if (tscmp(&drift_tmp, &drift_2time_ts, >))
1232 				drift_previous.x = drift_previous.y = 0;
1233 			    else
1234 				drift_previous = drift_last;
1235 			    drift_last.x = action2.dx;
1236 			    drift_last.y = action2.dy;
1237 			    drift_since = drift_current_ts;
1238 			}
1239 			if (abs(drift_last.x) + abs(drift_last.y)
1240 			  > drift_distance) {
1241 			    /* real movement, pass all accumulated steps */
1242 			    action2.dx = drift_previous.x + drift_last.x;
1243 			    action2.dy = drift_previous.y + drift_last.y;
1244 			    /* and reset accumulators */
1245 			    tsclr(&drift_since);
1246 			    drift_last.x = drift_last.y = 0;
1247 			    /* drift_previous will be cleared at next movement*/
1248 			    drift_last_activity = drift_current_ts;
1249 			} else {
1250 			    continue;   /* don't pass current movement to
1251 					 * console driver */
1252 			}
1253 		    }
1254 		}
1255 	    }
1256 
1257 	    if (extioctl) {
1258 		/* Defer clicks until we aren't VirtualScroll'ing. */
1259 		if (scroll_state == SCROLL_NOTSCROLLING)
1260 		    r_click(&action2);
1261 
1262 		if (action2.flags & MOUSE_POSCHANGED) {
1263 		    mouse.operation = MOUSE_MOTION_EVENT;
1264 		    mouse.u.data.buttons = action2.button;
1265 		    if (rodent.flags & ExponentialAcc) {
1266 			expoacc(action2.dx, action2.dy,
1267 			    &mouse.u.data.x, &mouse.u.data.y);
1268 		    }
1269 		    else {
1270 			linacc(action2.dx, action2.dy,
1271 			    &mouse.u.data.x, &mouse.u.data.y);
1272 		    }
1273 		    mouse.u.data.z = action2.dz;
1274 		    if (debug < 2)
1275 			if (!paused)
1276 				ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
1277 		}
1278 	    } else {
1279 		mouse.operation = MOUSE_ACTION;
1280 		mouse.u.data.buttons = action2.button;
1281 		if (rodent.flags & ExponentialAcc) {
1282 		    expoacc(action2.dx, action2.dy,
1283 			&mouse.u.data.x, &mouse.u.data.y);
1284 		}
1285 		else {
1286 		    linacc(action2.dx, action2.dy,
1287 			&mouse.u.data.x, &mouse.u.data.y);
1288 		}
1289 		mouse.u.data.z = action2.dz;
1290 		if (debug < 2)
1291 		    if (!paused)
1292 			ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
1293 	    }
1294 
1295 	    /*
1296 	     * If the Z axis movement is mapped to an imaginary physical
1297 	     * button, we need to cook up a corresponding button `up' event
1298 	     * after sending a button `down' event.
1299 	     */
1300 	    if ((rodent.zmap[0] > 0) && (action.dz != 0)) {
1301 		action.obutton = action.button;
1302 		action.dx = action.dy = action.dz = 0;
1303 		r_map(&action, &action2);
1304 		debug("activity : buttons 0x%08x  dx %d  dy %d  dz %d",
1305 		    action2.button, action2.dx, action2.dy, action2.dz);
1306 
1307 		if (extioctl) {
1308 		    r_click(&action2);
1309 		} else {
1310 		    mouse.operation = MOUSE_ACTION;
1311 		    mouse.u.data.buttons = action2.button;
1312 		    mouse.u.data.x = mouse.u.data.y = mouse.u.data.z = 0;
1313 		    if (debug < 2)
1314 			if (!paused)
1315 			    ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
1316 		}
1317 	    }
1318 	}
1319     }
1320     /* NOT REACHED */
1321 }
1322 
1323 static void
1324 hup(__unused int sig)
1325 {
1326     longjmp(env, 1);
1327 }
1328 
1329 static void
1330 cleanup(__unused int sig)
1331 {
1332     if (rodent.rtype == MOUSE_PROTO_X10MOUSEREM)
1333 	unlink(_PATH_MOUSEREMOTE);
1334     exit(0);
1335 }
1336 
1337 static void
1338 pause_mouse(__unused int sig)
1339 {
1340     paused = !paused;
1341 }
1342 
1343 /**
1344  ** usage
1345  **
1346  ** Complain, and free the CPU for more worthy tasks
1347  **/
1348 static void
1349 usage(void)
1350 {
1351     fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n",
1352 	"usage: moused [-DRcdfs] [-I file] [-F rate] [-r resolution] [-S baudrate]",
1353 	"              [-VH [-U threshold]] [-a X[,Y]] [-C threshold] [-m N=M] [-w N]",
1354 	"              [-z N] [-t <mousetype>] [-l level] [-3 [-E timeout]]",
1355 	"              [-T distance[,time[,after]]] -p <port>",
1356 	"       moused [-d] -i <port|if|type|model|all> -p <port>");
1357     exit(1);
1358 }
1359 
1360 /*
1361  * Output an error message to syslog or stderr as appropriate. If
1362  * `errnum' is non-zero, append its string form to the message.
1363  */
1364 static void
1365 log_or_warn(int log_pri, int errnum, const char *fmt, ...)
1366 {
1367 	va_list ap;
1368 	char buf[256];
1369 
1370 	va_start(ap, fmt);
1371 	vsnprintf(buf, sizeof(buf), fmt, ap);
1372 	va_end(ap);
1373 	if (errnum) {
1374 		strlcat(buf, ": ", sizeof(buf));
1375 		strlcat(buf, strerror(errnum), sizeof(buf));
1376 	}
1377 
1378 	if (background)
1379 		syslog(log_pri, "%s", buf);
1380 	else
1381 		warnx("%s", buf);
1382 }
1383 
1384 /**
1385  ** Mouse interface code, courtesy of XFree86 3.1.2.
1386  **
1387  ** Note: Various bits have been trimmed, and in my shortsighted enthusiasm
1388  ** to clean, reformat and rationalise naming, it's quite possible that
1389  ** some things in here have been broken.
1390  **
1391  ** I hope not 8)
1392  **
1393  ** The following code is derived from a module marked :
1394  **/
1395 
1396 /* $XConsortium: xf86_Mouse.c,v 1.2 94/10/12 20:33:21 kaleb Exp $ */
1397 /* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86_Mouse.c,v 3.2 1995/01/28
1398  17:03:40 dawes Exp $ */
1399 /*
1400  *
1401  * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
1402  * Copyright 1993 by David Dawes <dawes@physics.su.oz.au>
1403  *
1404  * Permission to use, copy, modify, distribute, and sell this software and its
1405  * documentation for any purpose is hereby granted without fee, provided that
1406  * the above copyright notice appear in all copies and that both that
1407  * copyright notice and this permission notice appear in supporting
1408  * documentation, and that the names of Thomas Roell and David Dawes not be
1409  * used in advertising or publicity pertaining to distribution of the
1410  * software without specific, written prior permission.  Thomas Roell
1411  * and David Dawes makes no representations about the suitability of this
1412  * software for any purpose.  It is provided "as is" without express or
1413  * implied warranty.
1414  *
1415  * THOMAS ROELL AND DAVID DAWES DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
1416  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
1417  * FITNESS, IN NO EVENT SHALL THOMAS ROELL OR DAVID DAWES BE LIABLE FOR ANY
1418  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
1419  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
1420  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
1421  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1422  *
1423  */
1424 
1425 /**
1426  ** GlidePoint support from XFree86 3.2.
1427  ** Derived from the module:
1428  **/
1429 
1430 /* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86_Mouse.c,v 3.19 1996/10/16 14:40:51 dawes Exp $ */
1431 /* $XConsortium: xf86_Mouse.c /main/10 1996/01/30 15:16:12 kaleb $ */
1432 
1433 /* the following table must be ordered by MOUSE_PROTO_XXX in mouse.h */
1434 static unsigned char proto[][7] = {
1435     /*  hd_mask hd_id   dp_mask dp_id   bytes b4_mask b4_id */
1436     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x23,  0x00 }, /* MicroSoft */
1437     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* MouseSystems */
1438     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* Logitech */
1439     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* MMSeries */
1440     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* MouseMan */
1441     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* Bus */
1442     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* InPort */
1443     {	0xc0,	0x00,	0x00,	0x00,	3,    0x00,  0xff }, /* PS/2 mouse */
1444     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* MM HitTablet */
1445     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* GlidePoint */
1446     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x3f,  0x00 }, /* IntelliMouse */
1447     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* ThinkingMouse */
1448     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* sysmouse */
1449     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x23,  0x00 }, /* X10 MouseRem */
1450     {	0x80,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* KIDSPAD */
1451     {	0xc3,	0xc0,	0x00,	0x00,	6,    0x00,  0xff }, /* VersaPad */
1452     {	0x00,	0x00,	0x00,	0x00,	1,    0x00,  0xff }, /* JogDial */
1453 #if notyet
1454     {	0xf8,	0x80,	0x00,	0x00,	5,   ~0x2f,  0x10 }, /* Mariqua */
1455 #endif
1456 };
1457 static unsigned char cur_proto[7];
1458 
1459 static int
1460 r_identify(void)
1461 {
1462     char pnpbuf[256];	/* PnP identifier string may be up to 256 bytes long */
1463     pnpid_t pnpid;
1464     symtab_t *t;
1465     int level;
1466     int len;
1467 
1468     /* set the driver operation level, if applicable */
1469     if (rodent.level < 0)
1470 	rodent.level = 1;
1471     ioctl(rodent.mfd, MOUSE_SETLEVEL, &rodent.level);
1472     rodent.level = (ioctl(rodent.mfd, MOUSE_GETLEVEL, &level) == 0) ? level : 0;
1473 
1474     /*
1475      * Interrogate the driver and get some intelligence on the device...
1476      * The following ioctl functions are not always supported by device
1477      * drivers.  When the driver doesn't support them, we just trust the
1478      * user to supply valid information.
1479      */
1480     rodent.hw.iftype = MOUSE_IF_UNKNOWN;
1481     rodent.hw.model = MOUSE_MODEL_GENERIC;
1482     ioctl(rodent.mfd, MOUSE_GETHWINFO, &rodent.hw);
1483 
1484     if (rodent.rtype != MOUSE_PROTO_UNKNOWN)
1485 	bcopy(proto[rodent.rtype], cur_proto, sizeof(cur_proto));
1486     rodent.mode.protocol = MOUSE_PROTO_UNKNOWN;
1487     rodent.mode.rate = -1;
1488     rodent.mode.resolution = MOUSE_RES_UNKNOWN;
1489     rodent.mode.accelfactor = 0;
1490     rodent.mode.level = 0;
1491     if (ioctl(rodent.mfd, MOUSE_GETMODE, &rodent.mode) == 0) {
1492 	if (rodent.mode.protocol == MOUSE_PROTO_UNKNOWN ||
1493 	    rodent.mode.protocol >= (int)(sizeof(proto) / sizeof(proto[0]))) {
1494 	    logwarnx("unknown mouse protocol (%d)", rodent.mode.protocol);
1495 	    return (MOUSE_PROTO_UNKNOWN);
1496 	} else {
1497 	    if (rodent.mode.protocol != rodent.rtype) {
1498 		/* Hmm, the driver doesn't agree with the user... */
1499 		if (rodent.rtype != MOUSE_PROTO_UNKNOWN)
1500 		    logwarnx("mouse type mismatch (%s != %s), %s is assumed",
1501 			r_name(rodent.mode.protocol), r_name(rodent.rtype),
1502 			r_name(rodent.mode.protocol));
1503 		rodent.rtype = rodent.mode.protocol;
1504 		bcopy(proto[rodent.rtype], cur_proto, sizeof(cur_proto));
1505 	    }
1506 	}
1507 	cur_proto[4] = rodent.mode.packetsize;
1508 	cur_proto[0] = rodent.mode.syncmask[0];	/* header byte bit mask */
1509 	cur_proto[1] = rodent.mode.syncmask[1];	/* header bit pattern */
1510     }
1511 
1512     /* maybe this is a PnP mouse... */
1513     if (rodent.mode.protocol == MOUSE_PROTO_UNKNOWN) {
1514 
1515 	if (rodent.flags & NoPnP)
1516 	    return (rodent.rtype);
1517 	if (((len = pnpgets(pnpbuf)) <= 0) || !pnpparse(&pnpid, pnpbuf, len))
1518 	    return (rodent.rtype);
1519 
1520 	debug("PnP serial mouse: '%*.*s' '%*.*s' '%*.*s'",
1521 	    pnpid.neisaid, pnpid.neisaid, pnpid.eisaid,
1522 	    pnpid.ncompat, pnpid.ncompat, pnpid.compat,
1523 	    pnpid.ndescription, pnpid.ndescription, pnpid.description);
1524 
1525 	/* we have a valid PnP serial device ID */
1526 	rodent.hw.iftype = MOUSE_IF_SERIAL;
1527 	t = pnpproto(&pnpid);
1528 	if (t != NULL) {
1529 	    rodent.mode.protocol = t->val;
1530 	    rodent.hw.model = t->val2;
1531 	} else {
1532 	    rodent.mode.protocol = MOUSE_PROTO_UNKNOWN;
1533 	}
1534 
1535 	/* make final adjustment */
1536 	if (rodent.mode.protocol != MOUSE_PROTO_UNKNOWN) {
1537 	    if (rodent.mode.protocol != rodent.rtype) {
1538 		/* Hmm, the device doesn't agree with the user... */
1539 		if (rodent.rtype != MOUSE_PROTO_UNKNOWN)
1540 		    logwarnx("mouse type mismatch (%s != %s), %s is assumed",
1541 			r_name(rodent.mode.protocol), r_name(rodent.rtype),
1542 			r_name(rodent.mode.protocol));
1543 		rodent.rtype = rodent.mode.protocol;
1544 		bcopy(proto[rodent.rtype], cur_proto, sizeof(cur_proto));
1545 	    }
1546 	}
1547     }
1548 
1549     debug("proto params: %02x %02x %02x %02x %d %02x %02x",
1550 	cur_proto[0], cur_proto[1], cur_proto[2], cur_proto[3],
1551 	cur_proto[4], cur_proto[5], cur_proto[6]);
1552 
1553     return (rodent.rtype);
1554 }
1555 
1556 static const char *
1557 r_if(int iftype)
1558 {
1559 
1560     return (gettokenname(rifs, iftype));
1561 }
1562 
1563 static const char *
1564 r_name(int type)
1565 {
1566     const char *unknown = "unknown";
1567 
1568     return (type == MOUSE_PROTO_UNKNOWN ||
1569 	type >= (int)(sizeof(rnames) / sizeof(rnames[0])) ?
1570 	unknown : rnames[type]);
1571 }
1572 
1573 static const char *
1574 r_model(int model)
1575 {
1576 
1577     return (gettokenname(rmodels, model));
1578 }
1579 
1580 static void
1581 r_init(void)
1582 {
1583     unsigned char buf[16];	/* scrach buffer */
1584     fd_set fds;
1585     const char *s;
1586     char c;
1587     int i;
1588 
1589     /**
1590      ** This comment is a little out of context here, but it contains
1591      ** some useful information...
1592      ********************************************************************
1593      **
1594      ** The following lines take care of the Logitech MouseMan protocols.
1595      **
1596      ** NOTE: There are different versions of both MouseMan and TrackMan!
1597      **       Hence I add another protocol P_LOGIMAN, which the user can
1598      **       specify as MouseMan in his XF86Config file. This entry was
1599      **       formerly handled as a special case of P_MS. However, people
1600      **       who don't have the middle button problem, can still specify
1601      **       Microsoft and use P_MS.
1602      **
1603      ** By default, these mice should use a 3 byte Microsoft protocol
1604      ** plus a 4th byte for the middle button. However, the mouse might
1605      ** have switched to a different protocol before we use it, so I send
1606      ** the proper sequence just in case.
1607      **
1608      ** NOTE: - all commands to (at least the European) MouseMan have to
1609      **         be sent at 1200 Baud.
1610      **       - each command starts with a '*'.
1611      **       - whenever the MouseMan receives a '*', it will switch back
1612      **	 to 1200 Baud. Hence I have to select the desired protocol
1613      **	 first, then select the baud rate.
1614      **
1615      ** The protocols supported by the (European) MouseMan are:
1616      **   -  5 byte packed binary protocol, as with the Mouse Systems
1617      **      mouse. Selected by sequence "*U".
1618      **   -  2 button 3 byte MicroSoft compatible protocol. Selected
1619      **      by sequence "*V".
1620      **   -  3 button 3+1 byte MicroSoft compatible protocol (default).
1621      **      Selected by sequence "*X".
1622      **
1623      ** The following baud rates are supported:
1624      **   -  1200 Baud (default). Selected by sequence "*n".
1625      **   -  9600 Baud. Selected by sequence "*q".
1626      **
1627      ** Selecting a sample rate is no longer supported with the MouseMan!
1628      ** Some additional lines in xf86Config.c take care of ill configured
1629      ** baud rates and sample rates. (The user will get an error.)
1630      */
1631 
1632     switch (rodent.rtype) {
1633 
1634     case MOUSE_PROTO_LOGI:
1635 	/*
1636 	 * The baud rate selection command must be sent at the current
1637 	 * baud rate; try all likely settings
1638 	 */
1639 	setmousespeed(9600, rodent.baudrate, rodentcflags[rodent.rtype]);
1640 	setmousespeed(4800, rodent.baudrate, rodentcflags[rodent.rtype]);
1641 	setmousespeed(2400, rodent.baudrate, rodentcflags[rodent.rtype]);
1642 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1643 	/* select MM series data format */
1644 	write(rodent.mfd, "S", 1);
1645 	setmousespeed(rodent.baudrate, rodent.baudrate,
1646 		      rodentcflags[MOUSE_PROTO_MM]);
1647 	/* select report rate/frequency */
1648 	if      (rodent.rate <= 0)   write(rodent.mfd, "O", 1);
1649 	else if (rodent.rate <= 15)  write(rodent.mfd, "J", 1);
1650 	else if (rodent.rate <= 27)  write(rodent.mfd, "K", 1);
1651 	else if (rodent.rate <= 42)  write(rodent.mfd, "L", 1);
1652 	else if (rodent.rate <= 60)  write(rodent.mfd, "R", 1);
1653 	else if (rodent.rate <= 85)  write(rodent.mfd, "M", 1);
1654 	else if (rodent.rate <= 125) write(rodent.mfd, "Q", 1);
1655 	else			     write(rodent.mfd, "N", 1);
1656 	break;
1657 
1658     case MOUSE_PROTO_LOGIMOUSEMAN:
1659 	/* The command must always be sent at 1200 baud */
1660 	setmousespeed(1200, 1200, rodentcflags[rodent.rtype]);
1661 	write(rodent.mfd, "*X", 2);
1662 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1663 	break;
1664 
1665     case MOUSE_PROTO_HITTAB:
1666 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1667 
1668 	/*
1669 	 * Initialize Hitachi PUMA Plus - Model 1212E to desired settings.
1670 	 * The tablet must be configured to be in MM mode, NO parity,
1671 	 * Binary Format.  xf86Info.sampleRate controls the sensativity
1672 	 * of the tablet.  We only use this tablet for it's 4-button puck
1673 	 * so we don't run in "Absolute Mode"
1674 	 */
1675 	write(rodent.mfd, "z8", 2);	/* Set Parity = "NONE" */
1676 	usleep(50000);
1677 	write(rodent.mfd, "zb", 2);	/* Set Format = "Binary" */
1678 	usleep(50000);
1679 	write(rodent.mfd, "@", 1);	/* Set Report Mode = "Stream" */
1680 	usleep(50000);
1681 	write(rodent.mfd, "R", 1);	/* Set Output Rate = "45 rps" */
1682 	usleep(50000);
1683 	write(rodent.mfd, "I\x20", 2);	/* Set Incrememtal Mode "20" */
1684 	usleep(50000);
1685 	write(rodent.mfd, "E", 1);	/* Set Data Type = "Relative */
1686 	usleep(50000);
1687 
1688 	/* Resolution is in 'lines per inch' on the Hitachi tablet */
1689 	if      (rodent.resolution == MOUSE_RES_LOW)		c = 'g';
1690 	else if (rodent.resolution == MOUSE_RES_MEDIUMLOW)	c = 'e';
1691 	else if (rodent.resolution == MOUSE_RES_MEDIUMHIGH)	c = 'h';
1692 	else if (rodent.resolution == MOUSE_RES_HIGH)		c = 'd';
1693 	else if (rodent.resolution <=   40)			c = 'g';
1694 	else if (rodent.resolution <=  100)			c = 'd';
1695 	else if (rodent.resolution <=  200)			c = 'e';
1696 	else if (rodent.resolution <=  500)			c = 'h';
1697 	else if (rodent.resolution <= 1000)			c = 'j';
1698 	else			c = 'd';
1699 	write(rodent.mfd, &c, 1);
1700 	usleep(50000);
1701 
1702 	write(rodent.mfd, "\021", 1);	/* Resume DATA output */
1703 	break;
1704 
1705     case MOUSE_PROTO_THINK:
1706 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1707 	/* the PnP ID string may be sent again, discard it */
1708 	usleep(200000);
1709 	i = FREAD;
1710 	ioctl(rodent.mfd, TIOCFLUSH, &i);
1711 	/* send the command to initialize the beast */
1712 	for (s = "E5E5"; *s; ++s) {
1713 	    write(rodent.mfd, s, 1);
1714 	    FD_ZERO(&fds);
1715 	    FD_SET(rodent.mfd, &fds);
1716 	    if (select(FD_SETSIZE, &fds, NULL, NULL, NULL) <= 0)
1717 		break;
1718 	    read(rodent.mfd, &c, 1);
1719 	    debug("%c", c);
1720 	    if (c != *s)
1721 		break;
1722 	}
1723 	break;
1724 
1725     case MOUSE_PROTO_JOGDIAL:
1726 	break;
1727     case MOUSE_PROTO_MSC:
1728 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1729 	if (rodent.flags & ClearDTR) {
1730 	   i = TIOCM_DTR;
1731 	   ioctl(rodent.mfd, TIOCMBIC, &i);
1732 	}
1733 	if (rodent.flags & ClearRTS) {
1734 	   i = TIOCM_RTS;
1735 	   ioctl(rodent.mfd, TIOCMBIC, &i);
1736 	}
1737 	break;
1738 
1739     case MOUSE_PROTO_SYSMOUSE:
1740 	if (rodent.hw.iftype == MOUSE_IF_SYSMOUSE)
1741 	    setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1742 	/* FALLTHROUGH */
1743 
1744     case MOUSE_PROTO_PS2:
1745 	if (rodent.rate >= 0)
1746 	    rodent.mode.rate = rodent.rate;
1747 	if (rodent.resolution != MOUSE_RES_UNKNOWN)
1748 	    rodent.mode.resolution = rodent.resolution;
1749 	ioctl(rodent.mfd, MOUSE_SETMODE, &rodent.mode);
1750 	break;
1751 
1752     case MOUSE_PROTO_X10MOUSEREM:
1753 	mremote_serversetup();
1754 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1755 	break;
1756 
1757 
1758     case MOUSE_PROTO_VERSAPAD:
1759 	tcsendbreak(rodent.mfd, 0);	/* send break for 400 msec */
1760 	i = FREAD;
1761 	ioctl(rodent.mfd, TIOCFLUSH, &i);
1762 	for (i = 0; i < 7; ++i) {
1763 	    FD_ZERO(&fds);
1764 	    FD_SET(rodent.mfd, &fds);
1765 	    if (select(FD_SETSIZE, &fds, NULL, NULL, NULL) <= 0)
1766 		break;
1767 	    read(rodent.mfd, &c, 1);
1768 	    buf[i] = c;
1769 	}
1770 	debug("%s\n", buf);
1771 	if ((buf[0] != 'V') || (buf[1] != 'P')|| (buf[7] != '\r'))
1772 	    break;
1773 	setmousespeed(9600, rodent.baudrate, rodentcflags[rodent.rtype]);
1774 	tcsendbreak(rodent.mfd, 0);	/* send break for 400 msec again */
1775 	for (i = 0; i < 7; ++i) {
1776 	    FD_ZERO(&fds);
1777 	    FD_SET(rodent.mfd, &fds);
1778 	    if (select(FD_SETSIZE, &fds, NULL, NULL, NULL) <= 0)
1779 		break;
1780 	    read(rodent.mfd, &c, 1);
1781 	    debug("%c", c);
1782 	    if (c != buf[i])
1783 		break;
1784 	}
1785 	i = FREAD;
1786 	ioctl(rodent.mfd, TIOCFLUSH, &i);
1787 	break;
1788 
1789     default:
1790 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1791 	break;
1792     }
1793 }
1794 
1795 static int
1796 r_protocol(u_char rBuf, mousestatus_t *act)
1797 {
1798     /* MOUSE_MSS_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
1799     static int butmapmss[4] = {	/* Microsoft, MouseMan, GlidePoint,
1800 				   IntelliMouse, Thinking Mouse */
1801 	0,
1802 	MOUSE_BUTTON3DOWN,
1803 	MOUSE_BUTTON1DOWN,
1804 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1805     };
1806     static int butmapmss2[4] = { /* Microsoft, MouseMan, GlidePoint,
1807 				    Thinking Mouse */
1808 	0,
1809 	MOUSE_BUTTON4DOWN,
1810 	MOUSE_BUTTON2DOWN,
1811 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN,
1812     };
1813     /* MOUSE_INTELLI_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
1814     static int butmapintelli[4] = { /* IntelliMouse, NetMouse, Mie Mouse,
1815 				       MouseMan+ */
1816 	0,
1817 	MOUSE_BUTTON2DOWN,
1818 	MOUSE_BUTTON4DOWN,
1819 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN,
1820     };
1821     /* MOUSE_MSC_BUTTON?UP -> MOUSE_BUTTON?DOWN */
1822     static int butmapmsc[8] = {	/* MouseSystems, MMSeries, Logitech,
1823 				   Bus, sysmouse */
1824 	0,
1825 	MOUSE_BUTTON3DOWN,
1826 	MOUSE_BUTTON2DOWN,
1827 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN,
1828 	MOUSE_BUTTON1DOWN,
1829 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1830 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN,
1831 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN
1832     };
1833     /* MOUSE_PS2_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
1834     static int butmapps2[8] = {	/* PS/2 */
1835 	0,
1836 	MOUSE_BUTTON1DOWN,
1837 	MOUSE_BUTTON3DOWN,
1838 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1839 	MOUSE_BUTTON2DOWN,
1840 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN,
1841 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN,
1842 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN
1843     };
1844     /* for Hitachi tablet */
1845     static int butmaphit[8] = {	/* MM HitTablet */
1846 	0,
1847 	MOUSE_BUTTON3DOWN,
1848 	MOUSE_BUTTON2DOWN,
1849 	MOUSE_BUTTON1DOWN,
1850 	MOUSE_BUTTON4DOWN,
1851 	MOUSE_BUTTON5DOWN,
1852 	MOUSE_BUTTON6DOWN,
1853 	MOUSE_BUTTON7DOWN,
1854     };
1855     /* for serial VersaPad */
1856     static int butmapversa[8] = { /* VersaPad */
1857 	0,
1858 	0,
1859 	MOUSE_BUTTON3DOWN,
1860 	MOUSE_BUTTON3DOWN,
1861 	MOUSE_BUTTON1DOWN,
1862 	MOUSE_BUTTON1DOWN,
1863 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1864 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1865     };
1866     /* for PS/2 VersaPad */
1867     static int butmapversaps2[8] = { /* VersaPad */
1868 	0,
1869 	MOUSE_BUTTON3DOWN,
1870 	0,
1871 	MOUSE_BUTTON3DOWN,
1872 	MOUSE_BUTTON1DOWN,
1873 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1874 	MOUSE_BUTTON1DOWN,
1875 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1876     };
1877     static int           pBufP = 0;
1878     static unsigned char pBuf[8];
1879     static int		 prev_x, prev_y;
1880     static int		 on = FALSE;
1881     int			 x, y;
1882 
1883     debug("received char 0x%x",(int)rBuf);
1884     if (rodent.rtype == MOUSE_PROTO_KIDSPAD)
1885 	return (kidspad(rBuf, act));
1886     if (rodent.rtype == MOUSE_PROTO_GTCO_DIGIPAD)
1887 	return (gtco_digipad(rBuf, act));
1888 
1889     /*
1890      * Hack for resyncing: We check here for a package that is:
1891      *  a) illegal (detected by wrong data-package header)
1892      *  b) invalid (0x80 == -128 and that might be wrong for MouseSystems)
1893      *  c) bad header-package
1894      *
1895      * NOTE: b) is a voilation of the MouseSystems-Protocol, since values of
1896      *       -128 are allowed, but since they are very seldom we can easily
1897      *       use them as package-header with no button pressed.
1898      * NOTE/2: On a PS/2 mouse any byte is valid as a data byte. Furthermore,
1899      *         0x80 is not valid as a header byte. For a PS/2 mouse we skip
1900      *         checking data bytes.
1901      *         For resyncing a PS/2 mouse we require the two most significant
1902      *         bits in the header byte to be 0. These are the overflow bits,
1903      *         and in case of an overflow we actually lose sync. Overflows
1904      *         are very rare, however, and we quickly gain sync again after
1905      *         an overflow condition. This is the best we can do. (Actually,
1906      *         we could use bit 0x08 in the header byte for resyncing, since
1907      *         that bit is supposed to be always on, but nobody told
1908      *         Microsoft...)
1909      */
1910 
1911     if (pBufP != 0 && rodent.rtype != MOUSE_PROTO_PS2 &&
1912 	((rBuf & cur_proto[2]) != cur_proto[3] || rBuf == 0x80))
1913     {
1914 	pBufP = 0;		/* skip package */
1915     }
1916 
1917     if (pBufP == 0 && (rBuf & cur_proto[0]) != cur_proto[1])
1918 	return (0);
1919 
1920     /* is there an extra data byte? */
1921     if (pBufP >= cur_proto[4] && (rBuf & cur_proto[0]) != cur_proto[1])
1922     {
1923 	/*
1924 	 * Hack for Logitech MouseMan Mouse - Middle button
1925 	 *
1926 	 * Unfortunately this mouse has variable length packets: the standard
1927 	 * Microsoft 3 byte packet plus an optional 4th byte whenever the
1928 	 * middle button status changes.
1929 	 *
1930 	 * We have already processed the standard packet with the movement
1931 	 * and button info.  Now post an event message with the old status
1932 	 * of the left and right buttons and the updated middle button.
1933 	 */
1934 
1935 	/*
1936 	 * Even worse, different MouseMen and TrackMen differ in the 4th
1937 	 * byte: some will send 0x00/0x20, others 0x01/0x21, or even
1938 	 * 0x02/0x22, so I have to strip off the lower bits.
1939 	 *
1940 	 * [JCH-96/01/21]
1941 	 * HACK for ALPS "fourth button". (It's bit 0x10 of the "fourth byte"
1942 	 * and it is activated by tapping the glidepad with the finger! 8^)
1943 	 * We map it to bit bit3, and the reverse map in xf86Events just has
1944 	 * to be extended so that it is identified as Button 4. The lower
1945 	 * half of the reverse-map may remain unchanged.
1946 	 */
1947 
1948 	/*
1949 	 * [KY-97/08/03]
1950 	 * Receive the fourth byte only when preceding three bytes have
1951 	 * been detected (pBufP >= cur_proto[4]).  In the previous
1952 	 * versions, the test was pBufP == 0; thus, we may have mistakingly
1953 	 * received a byte even if we didn't see anything preceding
1954 	 * the byte.
1955 	 */
1956 
1957 	if ((rBuf & cur_proto[5]) != cur_proto[6]) {
1958 	    pBufP = 0;
1959 	    return (0);
1960 	}
1961 
1962 	switch (rodent.rtype) {
1963 #if notyet
1964 	case MOUSE_PROTO_MARIQUA:
1965 	    /*
1966 	     * This mouse has 16! buttons in addition to the standard
1967 	     * three of them.  They return 0x10 though 0x1f in the
1968 	     * so-called `ten key' mode and 0x30 though 0x3f in the
1969 	     * `function key' mode.  As there are only 31 bits for
1970 	     * button state (including the standard three), we ignore
1971 	     * the bit 0x20 and don't distinguish the two modes.
1972 	     */
1973 	    act->dx = act->dy = act->dz = 0;
1974 	    act->obutton = act->button;
1975 	    rBuf &= 0x1f;
1976 	    act->button = (1 << (rBuf - 13))
1977 		| (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
1978 	    /*
1979 	     * FIXME: this is a button "down" event. There needs to be
1980 	     * a corresponding button "up" event... XXX
1981 	     */
1982 	    break;
1983 #endif /* notyet */
1984 	case MOUSE_PROTO_JOGDIAL:
1985 	    break;
1986 
1987 	/*
1988 	 * IntelliMouse, NetMouse (including NetMouse Pro) and Mie Mouse
1989 	 * always send the fourth byte, whereas the fourth byte is
1990 	 * optional for GlidePoint and ThinkingMouse. The fourth byte
1991 	 * is also optional for MouseMan+ and FirstMouse+ in their
1992 	 * native mode. It is always sent if they are in the IntelliMouse
1993 	 * compatible mode.
1994 	 */
1995 	case MOUSE_PROTO_INTELLI:	/* IntelliMouse, NetMouse, Mie Mouse,
1996 					   MouseMan+ */
1997 	    act->dx = act->dy = 0;
1998 	    act->dz = (rBuf & 0x08) ? (rBuf & 0x0f) - 16 : (rBuf & 0x0f);
1999 	    if ((act->dz >= 7) || (act->dz <= -7))
2000 		act->dz = 0;
2001 	    act->obutton = act->button;
2002 	    act->button = butmapintelli[(rBuf & MOUSE_MSS_BUTTONS) >> 4]
2003 		| (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
2004 	    break;
2005 
2006 	default:
2007 	    act->dx = act->dy = act->dz = 0;
2008 	    act->obutton = act->button;
2009 	    act->button = butmapmss2[(rBuf & MOUSE_MSS_BUTTONS) >> 4]
2010 		| (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
2011 	    break;
2012 	}
2013 
2014 	act->flags = ((act->dx || act->dy || act->dz) ? MOUSE_POSCHANGED : 0)
2015 	    | (act->obutton ^ act->button);
2016 	pBufP = 0;
2017 	return (act->flags);
2018     }
2019 
2020     if (pBufP >= cur_proto[4])
2021 	pBufP = 0;
2022     pBuf[pBufP++] = rBuf;
2023     if (pBufP != cur_proto[4])
2024 	return (0);
2025 
2026     /*
2027      * assembly full package
2028      */
2029 
2030     debug("assembled full packet (len %d) %x,%x,%x,%x,%x,%x,%x,%x",
2031 	cur_proto[4],
2032 	pBuf[0], pBuf[1], pBuf[2], pBuf[3],
2033 	pBuf[4], pBuf[5], pBuf[6], pBuf[7]);
2034 
2035     act->dz = 0;
2036     act->obutton = act->button;
2037     switch (rodent.rtype)
2038     {
2039     case MOUSE_PROTO_MS:		/* Microsoft */
2040     case MOUSE_PROTO_LOGIMOUSEMAN:	/* MouseMan/TrackMan */
2041     case MOUSE_PROTO_X10MOUSEREM:	/* X10 MouseRemote */
2042 	act->button = act->obutton & MOUSE_BUTTON4DOWN;
2043 	if (rodent.flags & ChordMiddle)
2044 	    act->button |= ((pBuf[0] & MOUSE_MSS_BUTTONS) == MOUSE_MSS_BUTTONS)
2045 		? MOUSE_BUTTON2DOWN
2046 		: butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
2047 	else
2048 	    act->button |= (act->obutton & MOUSE_BUTTON2DOWN)
2049 		| butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
2050 
2051 	/* Send X10 btn events to remote client (ensure -128-+127 range) */
2052 	if ((rodent.rtype == MOUSE_PROTO_X10MOUSEREM) &&
2053 	    ((pBuf[0] & 0xFC) == 0x44) && (pBuf[2] == 0x3F)) {
2054 	    if (rodent.mremcfd >= 0) {
2055 		unsigned char key = (signed char)(((pBuf[0] & 0x03) << 6) |
2056 						  (pBuf[1] & 0x3F));
2057 		write(rodent.mremcfd, &key, 1);
2058 	    }
2059 	    return (0);
2060 	}
2061 
2062 	act->dx = (signed char)(((pBuf[0] & 0x03) << 6) | (pBuf[1] & 0x3F));
2063 	act->dy = (signed char)(((pBuf[0] & 0x0C) << 4) | (pBuf[2] & 0x3F));
2064 	break;
2065 
2066     case MOUSE_PROTO_GLIDEPOINT:	/* GlidePoint */
2067     case MOUSE_PROTO_THINK:		/* ThinkingMouse */
2068     case MOUSE_PROTO_INTELLI:		/* IntelliMouse, NetMouse, Mie Mouse,
2069 					   MouseMan+ */
2070 	act->button = (act->obutton & (MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN))
2071 	    | butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
2072 	act->dx = (signed char)(((pBuf[0] & 0x03) << 6) | (pBuf[1] & 0x3F));
2073 	act->dy = (signed char)(((pBuf[0] & 0x0C) << 4) | (pBuf[2] & 0x3F));
2074 	break;
2075 
2076     case MOUSE_PROTO_MSC:		/* MouseSystems Corp */
2077 #if notyet
2078     case MOUSE_PROTO_MARIQUA:		/* Mariqua */
2079 #endif
2080 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_MSC_BUTTONS];
2081 	act->dx =    (signed char)(pBuf[1]) + (signed char)(pBuf[3]);
2082 	act->dy = - ((signed char)(pBuf[2]) + (signed char)(pBuf[4]));
2083 	break;
2084 
2085     case MOUSE_PROTO_JOGDIAL:		/* JogDial */
2086 	    if (rBuf == 0x6c)
2087 	      act->dz = -1;
2088 	    if (rBuf == 0x72)
2089 	      act->dz = 1;
2090 	    if (rBuf == 0x64)
2091 	      act->button = MOUSE_BUTTON1DOWN;
2092 	    if (rBuf == 0x75)
2093 	      act->button = 0;
2094 	break;
2095 
2096     case MOUSE_PROTO_HITTAB:		/* MM HitTablet */
2097 	act->button = butmaphit[pBuf[0] & 0x07];
2098 	act->dx = (pBuf[0] & MOUSE_MM_XPOSITIVE) ?   pBuf[1] : - pBuf[1];
2099 	act->dy = (pBuf[0] & MOUSE_MM_YPOSITIVE) ? - pBuf[2] :   pBuf[2];
2100 	break;
2101 
2102     case MOUSE_PROTO_MM:		/* MM Series */
2103     case MOUSE_PROTO_LOGI:		/* Logitech Mice */
2104 	act->button = butmapmsc[pBuf[0] & MOUSE_MSC_BUTTONS];
2105 	act->dx = (pBuf[0] & MOUSE_MM_XPOSITIVE) ?   pBuf[1] : - pBuf[1];
2106 	act->dy = (pBuf[0] & MOUSE_MM_YPOSITIVE) ? - pBuf[2] :   pBuf[2];
2107 	break;
2108 
2109     case MOUSE_PROTO_VERSAPAD:		/* VersaPad */
2110 	act->button = butmapversa[(pBuf[0] & MOUSE_VERSA_BUTTONS) >> 3];
2111 	act->button |= (pBuf[0] & MOUSE_VERSA_TAP) ? MOUSE_BUTTON4DOWN : 0;
2112 	act->dx = act->dy = 0;
2113 	if (!(pBuf[0] & MOUSE_VERSA_IN_USE)) {
2114 	    on = FALSE;
2115 	    break;
2116 	}
2117 	x = (pBuf[2] << 6) | pBuf[1];
2118 	if (x & 0x800)
2119 	    x -= 0x1000;
2120 	y = (pBuf[4] << 6) | pBuf[3];
2121 	if (y & 0x800)
2122 	    y -= 0x1000;
2123 	if (on) {
2124 	    act->dx = prev_x - x;
2125 	    act->dy = prev_y - y;
2126 	} else {
2127 	    on = TRUE;
2128 	}
2129 	prev_x = x;
2130 	prev_y = y;
2131 	break;
2132 
2133     case MOUSE_PROTO_PS2:		/* PS/2 */
2134 	act->button = butmapps2[pBuf[0] & MOUSE_PS2_BUTTONS];
2135 	act->dx = (pBuf[0] & MOUSE_PS2_XNEG) ?    pBuf[1] - 256  :  pBuf[1];
2136 	act->dy = (pBuf[0] & MOUSE_PS2_YNEG) ?  -(pBuf[2] - 256) : -pBuf[2];
2137 	/*
2138 	 * Moused usually operates the psm driver at the operation level 1
2139 	 * which sends mouse data in MOUSE_PROTO_SYSMOUSE protocol.
2140 	 * The following code takes effect only when the user explicitly
2141 	 * requets the level 2 at which wheel movement and additional button
2142 	 * actions are encoded in model-dependent formats. At the level 0
2143 	 * the following code is no-op because the psm driver says the model
2144 	 * is MOUSE_MODEL_GENERIC.
2145 	 */
2146 	switch (rodent.hw.model) {
2147 	case MOUSE_MODEL_EXPLORER:
2148 	    /* wheel and additional button data is in the fourth byte */
2149 	    act->dz = (pBuf[3] & MOUSE_EXPLORER_ZNEG)
2150 		? (pBuf[3] & 0x0f) - 16 : (pBuf[3] & 0x0f);
2151 	    act->button |= (pBuf[3] & MOUSE_EXPLORER_BUTTON4DOWN)
2152 		? MOUSE_BUTTON4DOWN : 0;
2153 	    act->button |= (pBuf[3] & MOUSE_EXPLORER_BUTTON5DOWN)
2154 		? MOUSE_BUTTON5DOWN : 0;
2155 	    break;
2156 	case MOUSE_MODEL_INTELLI:
2157 	case MOUSE_MODEL_NET:
2158 	    /* wheel data is in the fourth byte */
2159 	    act->dz = (signed char)pBuf[3];
2160 	    if ((act->dz >= 7) || (act->dz <= -7))
2161 		act->dz = 0;
2162 	    /* some compatible mice may have additional buttons */
2163 	    act->button |= (pBuf[0] & MOUSE_PS2INTELLI_BUTTON4DOWN)
2164 		? MOUSE_BUTTON4DOWN : 0;
2165 	    act->button |= (pBuf[0] & MOUSE_PS2INTELLI_BUTTON5DOWN)
2166 		? MOUSE_BUTTON5DOWN : 0;
2167 	    break;
2168 	case MOUSE_MODEL_MOUSEMANPLUS:
2169 	    if (((pBuf[0] & MOUSE_PS2PLUS_SYNCMASK) == MOUSE_PS2PLUS_SYNC)
2170 		    && (abs(act->dx) > 191)
2171 		    && MOUSE_PS2PLUS_CHECKBITS(pBuf)) {
2172 		/* the extended data packet encodes button and wheel events */
2173 		switch (MOUSE_PS2PLUS_PACKET_TYPE(pBuf)) {
2174 		case 1:
2175 		    /* wheel data packet */
2176 		    act->dx = act->dy = 0;
2177 		    if (pBuf[2] & 0x80) {
2178 			/* horizontal roller count - ignore it XXX*/
2179 		    } else {
2180 			/* vertical roller count */
2181 			act->dz = (pBuf[2] & MOUSE_PS2PLUS_ZNEG)
2182 			    ? (pBuf[2] & 0x0f) - 16 : (pBuf[2] & 0x0f);
2183 		    }
2184 		    act->button |= (pBuf[2] & MOUSE_PS2PLUS_BUTTON4DOWN)
2185 			? MOUSE_BUTTON4DOWN : 0;
2186 		    act->button |= (pBuf[2] & MOUSE_PS2PLUS_BUTTON5DOWN)
2187 			? MOUSE_BUTTON5DOWN : 0;
2188 		    break;
2189 		case 2:
2190 		    /* this packet type is reserved by Logitech */
2191 		    /*
2192 		     * IBM ScrollPoint Mouse uses this packet type to
2193 		     * encode both vertical and horizontal scroll movement.
2194 		     */
2195 		    act->dx = act->dy = 0;
2196 		    /* horizontal roller count */
2197 		    if (pBuf[2] & 0x0f)
2198 			act->dz = (pBuf[2] & MOUSE_SPOINT_WNEG) ? -2 : 2;
2199 		    /* vertical roller count */
2200 		    if (pBuf[2] & 0xf0)
2201 			act->dz = (pBuf[2] & MOUSE_SPOINT_ZNEG) ? -1 : 1;
2202 #if 0
2203 		    /* vertical roller count */
2204 		    act->dz = (pBuf[2] & MOUSE_SPOINT_ZNEG)
2205 			? ((pBuf[2] >> 4) & 0x0f) - 16
2206 			: ((pBuf[2] >> 4) & 0x0f);
2207 		    /* horizontal roller count */
2208 		    act->dw = (pBuf[2] & MOUSE_SPOINT_WNEG)
2209 			? (pBuf[2] & 0x0f) - 16 : (pBuf[2] & 0x0f);
2210 #endif
2211 		    break;
2212 		case 0:
2213 		    /* device type packet - shouldn't happen */
2214 		    /* FALLTHROUGH */
2215 		default:
2216 		    act->dx = act->dy = 0;
2217 		    act->button = act->obutton;
2218 		    debug("unknown PS2++ packet type %d: 0x%02x 0x%02x 0x%02x\n",
2219 			  MOUSE_PS2PLUS_PACKET_TYPE(pBuf),
2220 			  pBuf[0], pBuf[1], pBuf[2]);
2221 		    break;
2222 		}
2223 	    } else {
2224 		/* preserve button states */
2225 		act->button |= act->obutton & MOUSE_EXTBUTTONS;
2226 	    }
2227 	    break;
2228 	case MOUSE_MODEL_GLIDEPOINT:
2229 	    /* `tapping' action */
2230 	    act->button |= ((pBuf[0] & MOUSE_PS2_TAP)) ? 0 : MOUSE_BUTTON4DOWN;
2231 	    break;
2232 	case MOUSE_MODEL_NETSCROLL:
2233 	    /* three additional bytes encode buttons and wheel events */
2234 	    act->button |= (pBuf[3] & MOUSE_PS2_BUTTON3DOWN)
2235 		? MOUSE_BUTTON4DOWN : 0;
2236 	    act->button |= (pBuf[3] & MOUSE_PS2_BUTTON1DOWN)
2237 		? MOUSE_BUTTON5DOWN : 0;
2238 	    act->dz = (pBuf[3] & MOUSE_PS2_XNEG) ? pBuf[4] - 256 : pBuf[4];
2239 	    break;
2240 	case MOUSE_MODEL_THINK:
2241 	    /* the fourth button state in the first byte */
2242 	    act->button |= (pBuf[0] & MOUSE_PS2_TAP) ? MOUSE_BUTTON4DOWN : 0;
2243 	    break;
2244 	case MOUSE_MODEL_VERSAPAD:
2245 	    act->button = butmapversaps2[pBuf[0] & MOUSE_PS2VERSA_BUTTONS];
2246 	    act->button |=
2247 		(pBuf[0] & MOUSE_PS2VERSA_TAP) ? MOUSE_BUTTON4DOWN : 0;
2248 	    act->dx = act->dy = 0;
2249 	    if (!(pBuf[0] & MOUSE_PS2VERSA_IN_USE)) {
2250 		on = FALSE;
2251 		break;
2252 	    }
2253 	    x = ((pBuf[4] << 8) & 0xf00) | pBuf[1];
2254 	    if (x & 0x800)
2255 		x -= 0x1000;
2256 	    y = ((pBuf[4] << 4) & 0xf00) | pBuf[2];
2257 	    if (y & 0x800)
2258 		y -= 0x1000;
2259 	    if (on) {
2260 		act->dx = prev_x - x;
2261 		act->dy = prev_y - y;
2262 	    } else {
2263 		on = TRUE;
2264 	    }
2265 	    prev_x = x;
2266 	    prev_y = y;
2267 	    break;
2268 	case MOUSE_MODEL_4D:
2269 	    act->dx = (pBuf[1] & 0x80) ?    pBuf[1] - 256  :  pBuf[1];
2270 	    act->dy = (pBuf[2] & 0x80) ?  -(pBuf[2] - 256) : -pBuf[2];
2271 	    switch (pBuf[0] & MOUSE_4D_WHEELBITS) {
2272 	    case 0x10:
2273 		act->dz = 1;
2274 		break;
2275 	    case 0x30:
2276 		act->dz = -1;
2277 		break;
2278 	    case 0x40:	/* 2nd wheel rolling right XXX */
2279 		act->dz = 2;
2280 		break;
2281 	    case 0xc0:	/* 2nd wheel rolling left XXX */
2282 		act->dz = -2;
2283 		break;
2284 	    }
2285 	    break;
2286 	case MOUSE_MODEL_4DPLUS:
2287 	    if ((act->dx < 16 - 256) && (act->dy > 256 - 16)) {
2288 		act->dx = act->dy = 0;
2289 		if (pBuf[2] & MOUSE_4DPLUS_BUTTON4DOWN)
2290 		    act->button |= MOUSE_BUTTON4DOWN;
2291 		act->dz = (pBuf[2] & MOUSE_4DPLUS_ZNEG)
2292 			      ? ((pBuf[2] & 0x07) - 8) : (pBuf[2] & 0x07);
2293 	    } else {
2294 		/* preserve previous button states */
2295 		act->button |= act->obutton & MOUSE_EXTBUTTONS;
2296 	    }
2297 	    break;
2298 	case MOUSE_MODEL_GENERIC:
2299 	default:
2300 	    break;
2301 	}
2302 	break;
2303 
2304     case MOUSE_PROTO_SYSMOUSE:		/* sysmouse */
2305 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_SYS_STDBUTTONS];
2306 	act->dx =    (signed char)(pBuf[1]) + (signed char)(pBuf[3]);
2307 	act->dy = - ((signed char)(pBuf[2]) + (signed char)(pBuf[4]));
2308 	if (rodent.level == 1) {
2309 	    act->dz = ((signed char)(pBuf[5] << 1) + (signed char)(pBuf[6] << 1)) >> 1;
2310 	    act->button |= ((~pBuf[7] & MOUSE_SYS_EXTBUTTONS) << 3);
2311 	}
2312 	break;
2313 
2314     default:
2315 	return (0);
2316     }
2317     /*
2318      * We don't reset pBufP here yet, as there may be an additional data
2319      * byte in some protocols. See above.
2320      */
2321 
2322     /* has something changed? */
2323     act->flags = ((act->dx || act->dy || act->dz) ? MOUSE_POSCHANGED : 0)
2324 	| (act->obutton ^ act->button);
2325 
2326     return (act->flags);
2327 }
2328 
2329 static int
2330 r_statetrans(mousestatus_t *a1, mousestatus_t *a2, int trans)
2331 {
2332     int changed;
2333     int flags;
2334 
2335     a2->dx = a1->dx;
2336     a2->dy = a1->dy;
2337     a2->dz = a1->dz;
2338     a2->obutton = a2->button;
2339     a2->button = a1->button;
2340     a2->flags = a1->flags;
2341     changed = FALSE;
2342 
2343     if (rodent.flags & Emulate3Button) {
2344 	if (debug > 2)
2345 	    debug("state:%d, trans:%d -> state:%d",
2346 		  mouse_button_state, trans,
2347 		  states[mouse_button_state].s[trans]);
2348 	/*
2349 	 * Avoid re-ordering button and movement events. While a button
2350 	 * event is deferred, throw away up to BUTTON2_MAXMOVE movement
2351 	 * events to allow for mouse jitter. If more movement events
2352 	 * occur, then complete the deferred button events immediately.
2353 	 */
2354 	if ((a2->dx != 0 || a2->dy != 0) &&
2355 	    S_DELAYED(states[mouse_button_state].s[trans])) {
2356 		if (++mouse_move_delayed > BUTTON2_MAXMOVE) {
2357 			mouse_move_delayed = 0;
2358 			mouse_button_state =
2359 			    states[mouse_button_state].s[A_TIMEOUT];
2360 			changed = TRUE;
2361 		} else
2362 			a2->dx = a2->dy = 0;
2363 	} else
2364 		mouse_move_delayed = 0;
2365 	if (mouse_button_state != states[mouse_button_state].s[trans])
2366 		changed = TRUE;
2367 	if (changed)
2368 		clock_gettime(CLOCK_MONOTONIC_FAST, &mouse_button_state_ts);
2369 	mouse_button_state = states[mouse_button_state].s[trans];
2370 	a2->button &=
2371 	    ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN);
2372 	a2->button &= states[mouse_button_state].mask;
2373 	a2->button |= states[mouse_button_state].buttons;
2374 	flags = a2->flags & MOUSE_POSCHANGED;
2375 	flags |= a2->obutton ^ a2->button;
2376 	if (flags & MOUSE_BUTTON2DOWN) {
2377 	    a2->flags = flags & MOUSE_BUTTON2DOWN;
2378 	    r_timestamp(a2);
2379 	}
2380 	a2->flags = flags;
2381     }
2382     return (changed);
2383 }
2384 
2385 /* phisical to logical button mapping */
2386 static int p2l[MOUSE_MAXBUTTON] = {
2387     MOUSE_BUTTON1DOWN, MOUSE_BUTTON2DOWN, MOUSE_BUTTON3DOWN, MOUSE_BUTTON4DOWN,
2388     MOUSE_BUTTON5DOWN, MOUSE_BUTTON6DOWN, MOUSE_BUTTON7DOWN, MOUSE_BUTTON8DOWN,
2389     0x00000100,        0x00000200,        0x00000400,        0x00000800,
2390     0x00001000,        0x00002000,        0x00004000,        0x00008000,
2391     0x00010000,        0x00020000,        0x00040000,        0x00080000,
2392     0x00100000,        0x00200000,        0x00400000,        0x00800000,
2393     0x01000000,        0x02000000,        0x04000000,        0x08000000,
2394     0x10000000,        0x20000000,        0x40000000,
2395 };
2396 
2397 static char *
2398 skipspace(char *s)
2399 {
2400     while(isspace(*s))
2401 	++s;
2402     return (s);
2403 }
2404 
2405 static int
2406 r_installmap(char *arg)
2407 {
2408     int pbutton;
2409     int lbutton;
2410     char *s;
2411 
2412     while (*arg) {
2413 	arg = skipspace(arg);
2414 	s = arg;
2415 	while (isdigit(*arg))
2416 	    ++arg;
2417 	arg = skipspace(arg);
2418 	if ((arg <= s) || (*arg != '='))
2419 	    return (FALSE);
2420 	lbutton = atoi(s);
2421 
2422 	arg = skipspace(++arg);
2423 	s = arg;
2424 	while (isdigit(*arg))
2425 	    ++arg;
2426 	if ((arg <= s) || (!isspace(*arg) && (*arg != '\0')))
2427 	    return (FALSE);
2428 	pbutton = atoi(s);
2429 
2430 	if ((lbutton <= 0) || (lbutton > MOUSE_MAXBUTTON))
2431 	    return (FALSE);
2432 	if ((pbutton <= 0) || (pbutton > MOUSE_MAXBUTTON))
2433 	    return (FALSE);
2434 	p2l[pbutton - 1] = 1 << (lbutton - 1);
2435 	mstate[lbutton - 1] = &bstate[pbutton - 1];
2436     }
2437 
2438     return (TRUE);
2439 }
2440 
2441 static void
2442 r_map(mousestatus_t *act1, mousestatus_t *act2)
2443 {
2444     register int pb;
2445     register int pbuttons;
2446     int lbuttons;
2447 
2448     pbuttons = act1->button;
2449     lbuttons = 0;
2450 
2451     act2->obutton = act2->button;
2452     if (pbuttons & rodent.wmode) {
2453 	pbuttons &= ~rodent.wmode;
2454 	act1->dz = act1->dy;
2455 	act1->dx = 0;
2456 	act1->dy = 0;
2457     }
2458     act2->dx = act1->dx;
2459     act2->dy = act1->dy;
2460     act2->dz = act1->dz;
2461 
2462     switch (rodent.zmap[0]) {
2463     case 0:	/* do nothing */
2464 	break;
2465     case MOUSE_XAXIS:
2466 	if (act1->dz != 0) {
2467 	    act2->dx = act1->dz;
2468 	    act2->dz = 0;
2469 	}
2470 	break;
2471     case MOUSE_YAXIS:
2472 	if (act1->dz != 0) {
2473 	    act2->dy = act1->dz;
2474 	    act2->dz = 0;
2475 	}
2476 	break;
2477     default:	/* buttons */
2478 	pbuttons &= ~(rodent.zmap[0] | rodent.zmap[1]
2479 		    | rodent.zmap[2] | rodent.zmap[3]);
2480 	if ((act1->dz < -1) && rodent.zmap[2]) {
2481 	    pbuttons |= rodent.zmap[2];
2482 	    zstate[2].count = 1;
2483 	} else if (act1->dz < 0) {
2484 	    pbuttons |= rodent.zmap[0];
2485 	    zstate[0].count = 1;
2486 	} else if ((act1->dz > 1) && rodent.zmap[3]) {
2487 	    pbuttons |= rodent.zmap[3];
2488 	    zstate[3].count = 1;
2489 	} else if (act1->dz > 0) {
2490 	    pbuttons |= rodent.zmap[1];
2491 	    zstate[1].count = 1;
2492 	}
2493 	act2->dz = 0;
2494 	break;
2495     }
2496 
2497     for (pb = 0; (pb < MOUSE_MAXBUTTON) && (pbuttons != 0); ++pb) {
2498 	lbuttons |= (pbuttons & 1) ? p2l[pb] : 0;
2499 	pbuttons >>= 1;
2500     }
2501     act2->button = lbuttons;
2502 
2503     act2->flags = ((act2->dx || act2->dy || act2->dz) ? MOUSE_POSCHANGED : 0)
2504 	| (act2->obutton ^ act2->button);
2505 }
2506 
2507 static void
2508 r_timestamp(mousestatus_t *act)
2509 {
2510     struct timespec ts;
2511     struct timespec ts1;
2512     struct timespec ts2;
2513     struct timespec ts3;
2514     int button;
2515     int mask;
2516     int i;
2517 
2518     mask = act->flags & MOUSE_BUTTONS;
2519 #if 0
2520     if (mask == 0)
2521 	return;
2522 #endif
2523 
2524     clock_gettime(CLOCK_MONOTONIC_FAST, &ts1);
2525     drift_current_ts = ts1;
2526 
2527     /* double click threshold */
2528     ts2.tv_sec = rodent.clickthreshold / 1000;
2529     ts2.tv_nsec = (rodent.clickthreshold % 1000) * 1000000;
2530     tssub(&ts1, &ts2, &ts);
2531     debug("ts:  %jd %ld", (intmax_t)ts.tv_sec, ts.tv_nsec);
2532 
2533     /* 3 button emulation timeout */
2534     ts2.tv_sec = rodent.button2timeout / 1000;
2535     ts2.tv_nsec = (rodent.button2timeout % 1000) * 1000000;
2536     tssub(&ts1, &ts2, &ts3);
2537 
2538     button = MOUSE_BUTTON1DOWN;
2539     for (i = 0; (i < MOUSE_MAXBUTTON) && (mask != 0); ++i) {
2540 	if (mask & 1) {
2541 	    if (act->button & button) {
2542 		/* the button is down */
2543 		debug("  :  %jd %ld",
2544 		    (intmax_t)bstate[i].ts.tv_sec, bstate[i].ts.tv_nsec);
2545 		if (tscmp(&ts, &bstate[i].ts, >)) {
2546 		    bstate[i].count = 1;
2547 		} else {
2548 		    ++bstate[i].count;
2549 		}
2550 		bstate[i].ts = ts1;
2551 	    } else {
2552 		/* the button is up */
2553 		bstate[i].ts = ts1;
2554 	    }
2555 	} else {
2556 	    if (act->button & button) {
2557 		/* the button has been down */
2558 		if (tscmp(&ts3, &bstate[i].ts, >)) {
2559 		    bstate[i].count = 1;
2560 		    bstate[i].ts = ts1;
2561 		    act->flags |= button;
2562 		    debug("button %d timeout", i + 1);
2563 		}
2564 	    } else {
2565 		/* the button has been up */
2566 	    }
2567 	}
2568 	button <<= 1;
2569 	mask >>= 1;
2570     }
2571 }
2572 
2573 static int
2574 r_timeout(void)
2575 {
2576     struct timespec ts;
2577     struct timespec ts1;
2578     struct timespec ts2;
2579 
2580     if (states[mouse_button_state].timeout)
2581 	return (TRUE);
2582     clock_gettime(CLOCK_MONOTONIC_FAST, &ts1);
2583     ts2.tv_sec = rodent.button2timeout / 1000;
2584     ts2.tv_nsec = (rodent.button2timeout % 1000) * 1000000;
2585     tssub(&ts1, &ts2, &ts);
2586     return (tscmp(&ts, &mouse_button_state_ts, >));
2587 }
2588 
2589 static void
2590 r_click(mousestatus_t *act)
2591 {
2592     struct mouse_info mouse;
2593     int button;
2594     int mask;
2595     int i;
2596 
2597     mask = act->flags & MOUSE_BUTTONS;
2598     if (mask == 0)
2599 	return;
2600 
2601     button = MOUSE_BUTTON1DOWN;
2602     for (i = 0; (i < MOUSE_MAXBUTTON) && (mask != 0); ++i) {
2603 	if (mask & 1) {
2604 	    debug("mstate[%d]->count:%d", i, mstate[i]->count);
2605 	    if (act->button & button) {
2606 		/* the button is down */
2607 		mouse.u.event.value = mstate[i]->count;
2608 	    } else {
2609 		/* the button is up */
2610 		mouse.u.event.value = 0;
2611 	    }
2612 	    mouse.operation = MOUSE_BUTTON_EVENT;
2613 	    mouse.u.event.id = button;
2614 	    if (debug < 2)
2615 		if (!paused)
2616 		    ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
2617 	    debug("button %d  count %d", i + 1, mouse.u.event.value);
2618 	}
2619 	button <<= 1;
2620 	mask >>= 1;
2621     }
2622 }
2623 
2624 /* $XConsortium: posix_tty.c,v 1.3 95/01/05 20:42:55 kaleb Exp $ */
2625 /* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/shared/posix_tty.c,v 3.4 1995/01/28 17:05:03 dawes Exp $ */
2626 /*
2627  * Copyright 1993 by David Dawes <dawes@physics.su.oz.au>
2628  *
2629  * Permission to use, copy, modify, distribute, and sell this software and its
2630  * documentation for any purpose is hereby granted without fee, provided that
2631  * the above copyright notice appear in all copies and that both that
2632  * copyright notice and this permission notice appear in supporting
2633  * documentation, and that the name of David Dawes
2634  * not be used in advertising or publicity pertaining to distribution of
2635  * the software without specific, written prior permission.
2636  * David Dawes makes no representations about the suitability of this
2637  * software for any purpose.  It is provided "as is" without express or
2638  * implied warranty.
2639  *
2640  * DAVID DAWES DISCLAIMS ALL WARRANTIES WITH REGARD TO
2641  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
2642  * FITNESS, IN NO EVENT SHALL DAVID DAWES BE LIABLE FOR
2643  * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
2644  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
2645  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
2646  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
2647  *
2648  */
2649 
2650 
2651 static void
2652 setmousespeed(int old, int new, unsigned cflag)
2653 {
2654 	struct termios tty;
2655 	const char *c;
2656 
2657 	if (tcgetattr(rodent.mfd, &tty) < 0)
2658 	{
2659 		logwarn("unable to get status of mouse fd");
2660 		return;
2661 	}
2662 
2663 	tty.c_iflag = IGNBRK | IGNPAR;
2664 	tty.c_oflag = 0;
2665 	tty.c_lflag = 0;
2666 	tty.c_cflag = (tcflag_t)cflag;
2667 	tty.c_cc[VTIME] = 0;
2668 	tty.c_cc[VMIN] = 1;
2669 
2670 	switch (old)
2671 	{
2672 	case 9600:
2673 		cfsetispeed(&tty, B9600);
2674 		cfsetospeed(&tty, B9600);
2675 		break;
2676 	case 4800:
2677 		cfsetispeed(&tty, B4800);
2678 		cfsetospeed(&tty, B4800);
2679 		break;
2680 	case 2400:
2681 		cfsetispeed(&tty, B2400);
2682 		cfsetospeed(&tty, B2400);
2683 		break;
2684 	case 1200:
2685 	default:
2686 		cfsetispeed(&tty, B1200);
2687 		cfsetospeed(&tty, B1200);
2688 	}
2689 
2690 	if (tcsetattr(rodent.mfd, TCSADRAIN, &tty) < 0)
2691 	{
2692 		logwarn("unable to set status of mouse fd");
2693 		return;
2694 	}
2695 
2696 	switch (new)
2697 	{
2698 	case 9600:
2699 		c = "*q";
2700 		cfsetispeed(&tty, B9600);
2701 		cfsetospeed(&tty, B9600);
2702 		break;
2703 	case 4800:
2704 		c = "*p";
2705 		cfsetispeed(&tty, B4800);
2706 		cfsetospeed(&tty, B4800);
2707 		break;
2708 	case 2400:
2709 		c = "*o";
2710 		cfsetispeed(&tty, B2400);
2711 		cfsetospeed(&tty, B2400);
2712 		break;
2713 	case 1200:
2714 	default:
2715 		c = "*n";
2716 		cfsetispeed(&tty, B1200);
2717 		cfsetospeed(&tty, B1200);
2718 	}
2719 
2720 	if (rodent.rtype == MOUSE_PROTO_LOGIMOUSEMAN
2721 	    || rodent.rtype == MOUSE_PROTO_LOGI)
2722 	{
2723 		if (write(rodent.mfd, c, 2) != 2)
2724 		{
2725 			logwarn("unable to write to mouse fd");
2726 			return;
2727 		}
2728 	}
2729 	usleep(100000);
2730 
2731 	if (tcsetattr(rodent.mfd, TCSADRAIN, &tty) < 0)
2732 		logwarn("unable to set status of mouse fd");
2733 }
2734 
2735 /*
2736  * PnP COM device support
2737  *
2738  * It's a simplistic implementation, but it works :-)
2739  * KY, 31/7/97.
2740  */
2741 
2742 /*
2743  * Try to elicit a PnP ID as described in
2744  * Microsoft, Hayes: "Plug and Play External COM Device Specification,
2745  * rev 1.00", 1995.
2746  *
2747  * The routine does not fully implement the COM Enumerator as par Section
2748  * 2.1 of the document.  In particular, we don't have idle state in which
2749  * the driver software monitors the com port for dynamic connection or
2750  * removal of a device at the port, because `moused' simply quits if no
2751  * device is found.
2752  *
2753  * In addition, as PnP COM device enumeration procedure slightly has
2754  * changed since its first publication, devices which follow earlier
2755  * revisions of the above spec. may fail to respond if the rev 1.0
2756  * procedure is used. XXX
2757  */
2758 static int
2759 pnpwakeup1(void)
2760 {
2761     struct timeval timeout;
2762     fd_set fds;
2763     int i;
2764 
2765     /*
2766      * This is the procedure described in rev 1.0 of PnP COM device spec.
2767      * Unfortunately, some devices which comform to earlier revisions of
2768      * the spec gets confused and do not return the ID string...
2769      */
2770     debug("PnP COM device rev 1.0 probe...");
2771 
2772     /* port initialization (2.1.2) */
2773     ioctl(rodent.mfd, TIOCMGET, &i);
2774     i |= TIOCM_DTR;		/* DTR = 1 */
2775     i &= ~TIOCM_RTS;		/* RTS = 0 */
2776     ioctl(rodent.mfd, TIOCMSET, &i);
2777     usleep(240000);
2778 
2779     /*
2780      * The PnP COM device spec. dictates that the mouse must set DSR
2781      * in response to DTR (by hardware or by software) and that if DSR is
2782      * not asserted, the host computer should think that there is no device
2783      * at this serial port.  But some mice just don't do that...
2784      */
2785     ioctl(rodent.mfd, TIOCMGET, &i);
2786     debug("modem status 0%o", i);
2787     if ((i & TIOCM_DSR) == 0)
2788 	return (FALSE);
2789 
2790     /* port setup, 1st phase (2.1.3) */
2791     setmousespeed(1200, 1200, (CS7 | CREAD | CLOCAL | HUPCL));
2792     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 0, RTS = 0 */
2793     ioctl(rodent.mfd, TIOCMBIC, &i);
2794     usleep(240000);
2795     i = TIOCM_DTR;		/* DTR = 1, RTS = 0 */
2796     ioctl(rodent.mfd, TIOCMBIS, &i);
2797     usleep(240000);
2798 
2799     /* wait for response, 1st phase (2.1.4) */
2800     i = FREAD;
2801     ioctl(rodent.mfd, TIOCFLUSH, &i);
2802     i = TIOCM_RTS;		/* DTR = 1, RTS = 1 */
2803     ioctl(rodent.mfd, TIOCMBIS, &i);
2804 
2805     /* try to read something */
2806     FD_ZERO(&fds);
2807     FD_SET(rodent.mfd, &fds);
2808     timeout.tv_sec = 0;
2809     timeout.tv_usec = 240000;
2810     if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) {
2811 	debug("pnpwakeup1(): valid response in first phase.");
2812 	return (TRUE);
2813     }
2814 
2815     /* port setup, 2nd phase (2.1.5) */
2816     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 0, RTS = 0 */
2817     ioctl(rodent.mfd, TIOCMBIC, &i);
2818     usleep(240000);
2819 
2820     /* wait for respose, 2nd phase (2.1.6) */
2821     i = FREAD;
2822     ioctl(rodent.mfd, TIOCFLUSH, &i);
2823     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 1, RTS = 1 */
2824     ioctl(rodent.mfd, TIOCMBIS, &i);
2825 
2826     /* try to read something */
2827     FD_ZERO(&fds);
2828     FD_SET(rodent.mfd, &fds);
2829     timeout.tv_sec = 0;
2830     timeout.tv_usec = 240000;
2831     if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) {
2832 	debug("pnpwakeup1(): valid response in second phase.");
2833 	return (TRUE);
2834     }
2835 
2836     return (FALSE);
2837 }
2838 
2839 static int
2840 pnpwakeup2(void)
2841 {
2842     struct timeval timeout;
2843     fd_set fds;
2844     int i;
2845 
2846     /*
2847      * This is a simplified procedure; it simply toggles RTS.
2848      */
2849     debug("alternate probe...");
2850 
2851     ioctl(rodent.mfd, TIOCMGET, &i);
2852     i |= TIOCM_DTR;		/* DTR = 1 */
2853     i &= ~TIOCM_RTS;		/* RTS = 0 */
2854     ioctl(rodent.mfd, TIOCMSET, &i);
2855     usleep(240000);
2856 
2857     setmousespeed(1200, 1200, (CS7 | CREAD | CLOCAL | HUPCL));
2858 
2859     /* wait for respose */
2860     i = FREAD;
2861     ioctl(rodent.mfd, TIOCFLUSH, &i);
2862     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 1, RTS = 1 */
2863     ioctl(rodent.mfd, TIOCMBIS, &i);
2864 
2865     /* try to read something */
2866     FD_ZERO(&fds);
2867     FD_SET(rodent.mfd, &fds);
2868     timeout.tv_sec = 0;
2869     timeout.tv_usec = 240000;
2870     if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) {
2871 	debug("pnpwakeup2(): valid response.");
2872 	return (TRUE);
2873     }
2874 
2875     return (FALSE);
2876 }
2877 
2878 static int
2879 pnpgets(char *buf)
2880 {
2881     struct timeval timeout;
2882     fd_set fds;
2883     int begin;
2884     int i;
2885     char c;
2886 
2887     if (!pnpwakeup1() && !pnpwakeup2()) {
2888 	/*
2889 	 * According to PnP spec, we should set DTR = 1 and RTS = 0 while
2890 	 * in idle state.  But, `moused' shall set DTR = RTS = 1 and proceed,
2891 	 * assuming there is something at the port even if it didn't
2892 	 * respond to the PnP enumeration procedure.
2893 	 */
2894 	i = TIOCM_DTR | TIOCM_RTS;		/* DTR = 1, RTS = 1 */
2895 	ioctl(rodent.mfd, TIOCMBIS, &i);
2896 	return (0);
2897     }
2898 
2899     /* collect PnP COM device ID (2.1.7) */
2900     begin = -1;
2901     i = 0;
2902     usleep(240000);	/* the mouse must send `Begin ID' within 200msec */
2903     while (read(rodent.mfd, &c, 1) == 1) {
2904 	/* we may see "M", or "M3..." before `Begin ID' */
2905 	buf[i++] = c;
2906 	if ((c == 0x08) || (c == 0x28)) {	/* Begin ID */
2907 	    debug("begin-id %02x", c);
2908 	    begin = i - 1;
2909 	    break;
2910 	}
2911 	debug("%c %02x", c, c);
2912 	if (i >= 256)
2913 	    break;
2914     }
2915     if (begin < 0) {
2916 	/* we haven't seen `Begin ID' in time... */
2917 	goto connect_idle;
2918     }
2919 
2920     ++c;			/* make it `End ID' */
2921     for (;;) {
2922 	FD_ZERO(&fds);
2923 	FD_SET(rodent.mfd, &fds);
2924 	timeout.tv_sec = 0;
2925 	timeout.tv_usec = 240000;
2926 	if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) <= 0)
2927 	    break;
2928 
2929 	read(rodent.mfd, &buf[i], 1);
2930 	if (buf[i++] == c)	/* End ID */
2931 	    break;
2932 	if (i >= 256)
2933 	    break;
2934     }
2935     if (begin > 0) {
2936 	i -= begin;
2937 	bcopy(&buf[begin], &buf[0], i);
2938     }
2939     /* string may not be human readable... */
2940     debug("len:%d, '%-*.*s'", i, i, i, buf);
2941 
2942     if (buf[i - 1] == c)
2943 	return (i);		/* a valid PnP string */
2944 
2945     /*
2946      * According to PnP spec, we should set DTR = 1 and RTS = 0 while
2947      * in idle state.  But, `moused' shall leave the modem control lines
2948      * as they are. See above.
2949      */
2950 connect_idle:
2951 
2952     /* we may still have something in the buffer */
2953     return (MAX(i, 0));
2954 }
2955 
2956 static int
2957 pnpparse(pnpid_t *id, char *buf, int len)
2958 {
2959     char s[3];
2960     int offset;
2961     int sum = 0;
2962     int i, j;
2963 
2964     id->revision = 0;
2965     id->eisaid = NULL;
2966     id->serial = NULL;
2967     id->class = NULL;
2968     id->compat = NULL;
2969     id->description = NULL;
2970     id->neisaid = 0;
2971     id->nserial = 0;
2972     id->nclass = 0;
2973     id->ncompat = 0;
2974     id->ndescription = 0;
2975 
2976     if ((buf[0] != 0x28) && (buf[0] != 0x08)) {
2977 	/* non-PnP mice */
2978 	switch(buf[0]) {
2979 	default:
2980 	    return (FALSE);
2981 	case 'M': /* Microsoft */
2982 	    id->eisaid = "PNP0F01";
2983 	    break;
2984 	case 'H': /* MouseSystems */
2985 	    id->eisaid = "PNP0F04";
2986 	    break;
2987 	}
2988 	id->neisaid = strlen(id->eisaid);
2989 	id->class = "MOUSE";
2990 	id->nclass = strlen(id->class);
2991 	debug("non-PnP mouse '%c'", buf[0]);
2992 	return (TRUE);
2993     }
2994 
2995     /* PnP mice */
2996     offset = 0x28 - buf[0];
2997 
2998     /* calculate checksum */
2999     for (i = 0; i < len - 3; ++i) {
3000 	sum += buf[i];
3001 	buf[i] += offset;
3002     }
3003     sum += buf[len - 1];
3004     for (; i < len; ++i)
3005 	buf[i] += offset;
3006     debug("PnP ID string: '%*.*s'", len, len, buf);
3007 
3008     /* revision */
3009     buf[1] -= offset;
3010     buf[2] -= offset;
3011     id->revision = ((buf[1] & 0x3f) << 6) | (buf[2] & 0x3f);
3012     debug("PnP rev %d.%02d", id->revision / 100, id->revision % 100);
3013 
3014     /* EISA vendor and product ID */
3015     id->eisaid = &buf[3];
3016     id->neisaid = 7;
3017 
3018     /* option strings */
3019     i = 10;
3020     if (buf[i] == '\\') {
3021 	/* device serial # */
3022 	for (j = ++i; i < len; ++i) {
3023 	    if (buf[i] == '\\')
3024 		break;
3025 	}
3026 	if (i >= len)
3027 	    i -= 3;
3028 	if (i - j == 8) {
3029 	    id->serial = &buf[j];
3030 	    id->nserial = 8;
3031 	}
3032     }
3033     if (buf[i] == '\\') {
3034 	/* PnP class */
3035 	for (j = ++i; i < len; ++i) {
3036 	    if (buf[i] == '\\')
3037 		break;
3038 	}
3039 	if (i >= len)
3040 	    i -= 3;
3041 	if (i > j + 1) {
3042 	    id->class = &buf[j];
3043 	    id->nclass = i - j;
3044 	}
3045     }
3046     if (buf[i] == '\\') {
3047 	/* compatible driver */
3048 	for (j = ++i; i < len; ++i) {
3049 	    if (buf[i] == '\\')
3050 		break;
3051 	}
3052 	/*
3053 	 * PnP COM spec prior to v0.96 allowed '*' in this field,
3054 	 * it's not allowed now; just ignore it.
3055 	 */
3056 	if (buf[j] == '*')
3057 	    ++j;
3058 	if (i >= len)
3059 	    i -= 3;
3060 	if (i > j + 1) {
3061 	    id->compat = &buf[j];
3062 	    id->ncompat = i - j;
3063 	}
3064     }
3065     if (buf[i] == '\\') {
3066 	/* product description */
3067 	for (j = ++i; i < len; ++i) {
3068 	    if (buf[i] == ';')
3069 		break;
3070 	}
3071 	if (i >= len)
3072 	    i -= 3;
3073 	if (i > j + 1) {
3074 	    id->description = &buf[j];
3075 	    id->ndescription = i - j;
3076 	}
3077     }
3078 
3079     /* checksum exists if there are any optional fields */
3080     if ((id->nserial > 0) || (id->nclass > 0)
3081 	|| (id->ncompat > 0) || (id->ndescription > 0)) {
3082 	debug("PnP checksum: 0x%X", sum);
3083 	sprintf(s, "%02X", sum & 0x0ff);
3084 	if (strncmp(s, &buf[len - 3], 2) != 0) {
3085 #if 0
3086 	    /*
3087 	     * I found some mice do not comply with the PnP COM device
3088 	     * spec regarding checksum... XXX
3089 	     */
3090 	    logwarnx("PnP checksum error", 0);
3091 	    return (FALSE);
3092 #endif
3093 	}
3094     }
3095 
3096     return (TRUE);
3097 }
3098 
3099 static symtab_t *
3100 pnpproto(pnpid_t *id)
3101 {
3102     symtab_t *t;
3103     int i, j;
3104 
3105     if (id->nclass > 0)
3106 	if (strncmp(id->class, "MOUSE", id->nclass) != 0 &&
3107 	    strncmp(id->class, "TABLET", id->nclass) != 0)
3108 	    /* this is not a mouse! */
3109 	    return (NULL);
3110 
3111     if (id->neisaid > 0) {
3112 	t = gettoken(pnpprod, id->eisaid, id->neisaid);
3113 	if (t->val != MOUSE_PROTO_UNKNOWN)
3114 	    return (t);
3115     }
3116 
3117     /*
3118      * The 'Compatible drivers' field may contain more than one
3119      * ID separated by ','.
3120      */
3121     if (id->ncompat <= 0)
3122 	return (NULL);
3123     for (i = 0; i < id->ncompat; ++i) {
3124 	for (j = i; id->compat[i] != ','; ++i)
3125 	    if (i >= id->ncompat)
3126 		break;
3127 	if (i > j) {
3128 	    t = gettoken(pnpprod, id->compat + j, i - j);
3129 	    if (t->val != MOUSE_PROTO_UNKNOWN)
3130 		return (t);
3131 	}
3132     }
3133 
3134     return (NULL);
3135 }
3136 
3137 /* name/val mapping */
3138 
3139 static symtab_t *
3140 gettoken(symtab_t *tab, const char *s, int len)
3141 {
3142     int i;
3143 
3144     for (i = 0; tab[i].name != NULL; ++i) {
3145 	if (strncmp(tab[i].name, s, len) == 0)
3146 	    break;
3147     }
3148     return (&tab[i]);
3149 }
3150 
3151 static const char *
3152 gettokenname(symtab_t *tab, int val)
3153 {
3154     static const char unknown[] = "unknown";
3155     int i;
3156 
3157     for (i = 0; tab[i].name != NULL; ++i) {
3158 	if (tab[i].val == val)
3159 	    return (tab[i].name);
3160     }
3161     return (unknown);
3162 }
3163 
3164 
3165 /*
3166  * code to read from the Genius Kidspad tablet.
3167 
3168 The tablet responds to the COM PnP protocol 1.0 with EISA-ID KYE0005,
3169 and to pre-pnp probes (RTS toggle) with 'T' (tablet ?)
3170 9600, 8 bit, parity odd.
3171 
3172 The tablet puts out 5 bytes. b0 (mask 0xb8, value 0xb8) contains
3173 the proximity, tip and button info:
3174    (byte0 & 0x1)	true = tip pressed
3175    (byte0 & 0x2)	true = button pressed
3176    (byte0 & 0x40)	false = pen in proximity of tablet.
3177 
3178 The next 4 bytes are used for coordinates xl, xh, yl, yh (7 bits valid).
3179 
3180 Only absolute coordinates are returned, so we use the following approach:
3181 we store the last coordinates sent when the pen went out of the tablet,
3182 
3183 
3184  *
3185  */
3186 
3187 typedef enum {
3188     S_IDLE, S_PROXY, S_FIRST, S_DOWN, S_UP
3189 } k_status;
3190 
3191 static int
3192 kidspad(u_char rxc, mousestatus_t *act)
3193 {
3194     static int buf[5];
3195     static int buflen = 0, b_prev = 0 , x_prev = -1, y_prev = -1;
3196     static k_status status = S_IDLE;
3197     static struct timespec now;
3198 
3199     int x, y;
3200 
3201     if (buflen > 0 && (rxc & 0x80)) {
3202 	fprintf(stderr, "invalid code %d 0x%x\n", buflen, rxc);
3203 	buflen = 0;
3204     }
3205     if (buflen == 0 && (rxc & 0xb8) != 0xb8) {
3206 	fprintf(stderr, "invalid code 0 0x%x\n", rxc);
3207 	return (0);	/* invalid code, no action */
3208     }
3209     buf[buflen++] = rxc;
3210     if (buflen < 5)
3211 	return (0);
3212 
3213     buflen = 0;	/* for next time... */
3214 
3215     x = buf[1]+128*(buf[2] - 7);
3216     if (x < 0) x = 0;
3217     y = 28*128 - (buf[3] + 128* (buf[4] - 7));
3218     if (y < 0) y = 0;
3219 
3220     x /= 8;
3221     y /= 8;
3222 
3223     act->flags = 0;
3224     act->obutton = act->button;
3225     act->dx = act->dy = act->dz = 0;
3226     clock_gettime(CLOCK_MONOTONIC_FAST, &now);
3227     if (buf[0] & 0x40) /* pen went out of reach */
3228 	status = S_IDLE;
3229     else if (status == S_IDLE) { /* pen is newly near the tablet */
3230 	act->flags |= MOUSE_POSCHANGED;	/* force update */
3231 	status = S_PROXY;
3232 	x_prev = x;
3233 	y_prev = y;
3234     }
3235     act->dx = x - x_prev;
3236     act->dy = y - y_prev;
3237     if (act->dx || act->dy)
3238 	act->flags |= MOUSE_POSCHANGED;
3239     x_prev = x;
3240     y_prev = y;
3241     if (b_prev != 0 && b_prev != buf[0]) { /* possibly record button change */
3242 	act->button = 0;
3243 	if (buf[0] & 0x01) /* tip pressed */
3244 	    act->button |= MOUSE_BUTTON1DOWN;
3245 	if (buf[0] & 0x02) /* button pressed */
3246 	    act->button |= MOUSE_BUTTON2DOWN;
3247 	act->flags |= MOUSE_BUTTONSCHANGED;
3248     }
3249     b_prev = buf[0];
3250     return (act->flags);
3251 }
3252 
3253 static int
3254 gtco_digipad (u_char rxc, mousestatus_t *act)
3255 {
3256 	static u_char buf[5];
3257  	static int buflen = 0, b_prev = 0 , x_prev = -1, y_prev = -1;
3258 	static k_status status = S_IDLE;
3259 	int x, y;
3260 
3261 #define	GTCO_HEADER	0x80
3262 #define	GTCO_PROXIMITY	0x40
3263 #define	GTCO_START	(GTCO_HEADER|GTCO_PROXIMITY)
3264 #define	GTCO_BUTTONMASK	0x3c
3265 
3266 
3267 	if (buflen > 0 && ((rxc & GTCO_HEADER) != GTCO_HEADER)) {
3268 		fprintf(stderr, "invalid code %d 0x%x\n", buflen, rxc);
3269 		buflen = 0;
3270 	}
3271 	if (buflen == 0 && (rxc & GTCO_START) != GTCO_START) {
3272 		fprintf(stderr, "invalid code 0 0x%x\n", rxc);
3273 		return (0);	/* invalid code, no action */
3274 	}
3275 
3276 	buf[buflen++] = rxc;
3277 	if (buflen < 5)
3278 		return (0);
3279 
3280 	buflen = 0;	/* for next time... */
3281 
3282 	x = ((buf[2] & ~GTCO_START) << 6 | (buf[1] & ~GTCO_START));
3283 	y = 4768 - ((buf[4] & ~GTCO_START) << 6 | (buf[3] & ~GTCO_START));
3284 
3285 	x /= 2.5;
3286 	y /= 2.5;
3287 
3288 	act->flags = 0;
3289 	act->obutton = act->button;
3290 	act->dx = act->dy = act->dz = 0;
3291 
3292 	if ((buf[0] & 0x40) == 0) /* pen went out of reach */
3293 		status = S_IDLE;
3294 	else if (status == S_IDLE) { /* pen is newly near the tablet */
3295 		act->flags |= MOUSE_POSCHANGED;	/* force update */
3296 		status = S_PROXY;
3297 		x_prev = x;
3298 		y_prev = y;
3299 	}
3300 
3301 	act->dx = x - x_prev;
3302 	act->dy = y - y_prev;
3303 	if (act->dx || act->dy)
3304 		act->flags |= MOUSE_POSCHANGED;
3305 	x_prev = x;
3306 	y_prev = y;
3307 
3308 	/* possibly record button change */
3309 	if (b_prev != 0 && b_prev != buf[0]) {
3310 		act->button = 0;
3311 		if (buf[0] & 0x04) {
3312 			/* tip pressed/yellow */
3313 			act->button |= MOUSE_BUTTON1DOWN;
3314 		}
3315 		if (buf[0] & 0x08) {
3316 			/* grey/white */
3317 			act->button |= MOUSE_BUTTON2DOWN;
3318 		}
3319 		if (buf[0] & 0x10) {
3320 			/* black/green */
3321 			act->button |= MOUSE_BUTTON3DOWN;
3322 		}
3323 		if (buf[0] & 0x20) {
3324 			/* tip+grey/blue */
3325 			act->button |= MOUSE_BUTTON4DOWN;
3326 		}
3327 		act->flags |= MOUSE_BUTTONSCHANGED;
3328 	}
3329 	b_prev = buf[0];
3330 	return (act->flags);
3331 }
3332 
3333 static void
3334 mremote_serversetup(void)
3335 {
3336     struct sockaddr_un ad;
3337 
3338     /* Open a UNIX domain stream socket to listen for mouse remote clients */
3339     unlink(_PATH_MOUSEREMOTE);
3340 
3341     if ((rodent.mremsfd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
3342 	logerrx(1, "unable to create unix domain socket %s",_PATH_MOUSEREMOTE);
3343 
3344     umask(0111);
3345 
3346     bzero(&ad, sizeof(ad));
3347     ad.sun_family = AF_UNIX;
3348     strcpy(ad.sun_path, _PATH_MOUSEREMOTE);
3349 #ifndef SUN_LEN
3350 #define SUN_LEN(unp) (((char *)(unp)->sun_path - (char *)(unp)) + \
3351 		       strlen((unp)->path))
3352 #endif
3353     if (bind(rodent.mremsfd, (struct sockaddr *) &ad, SUN_LEN(&ad)) < 0)
3354 	logerrx(1, "unable to bind unix domain socket %s", _PATH_MOUSEREMOTE);
3355 
3356     listen(rodent.mremsfd, 1);
3357 }
3358 
3359 static void
3360 mremote_clientchg(int add)
3361 {
3362     struct sockaddr_un ad;
3363     socklen_t ad_len;
3364     int fd;
3365 
3366     if (rodent.rtype != MOUSE_PROTO_X10MOUSEREM)
3367 	return;
3368 
3369     if (add) {
3370 	/*  Accept client connection, if we don't already have one  */
3371 	ad_len = sizeof(ad);
3372 	fd = accept(rodent.mremsfd, (struct sockaddr *) &ad, &ad_len);
3373 	if (fd < 0)
3374 	    logwarnx("failed accept on mouse remote socket");
3375 
3376 	if (rodent.mremcfd < 0) {
3377 	    rodent.mremcfd = fd;
3378 	    debug("remote client connect...accepted");
3379 	}
3380 	else {
3381 	    close(fd);
3382 	    debug("another remote client connect...disconnected");
3383 	}
3384     }
3385     else {
3386 	/* Client disconnected */
3387 	debug("remote client disconnected");
3388 	close(rodent.mremcfd);
3389 	rodent.mremcfd = -1;
3390     }
3391 }
3392