xref: /netbsd/usr.sbin/moused/moused.c (revision bf9ec67e)
1 /* $NetBSD: moused.c,v 1.6 2002/04/22 13:08:34 wiz Exp $ */
2 /**
3  ** Copyright (c) 1995 Michael Smith, All rights reserved.
4  **
5  ** Redistribution and use in source and binary forms, with or without
6  ** modification, are permitted provided that the following conditions
7  ** are met:
8  ** 1. Redistributions of source code must retain the above copyright
9  **    notice, this list of conditions and the following disclaimer as
10  **    the first lines of this file unmodified.
11  ** 2. Redistributions in binary form must reproduce the above copyright
12  **    notice, this list of conditions and the following disclaimer in the
13  **    documentation and/or other materials provided with the distribution.
14  ** 3. All advertising materials mentioning features or use of this software
15  **    must display the following acknowledgment:
16  **      This product includes software developed by Michael Smith.
17  ** 4. The name of the author may not be used to endorse or promote products
18  **    derived from this software without specific prior written permission.
19  **
20  **
21  ** THIS SOFTWARE IS PROVIDED BY Michael Smith ``AS IS'' AND ANY
22  ** EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24  ** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Michael Smith BE LIABLE FOR
25  ** ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26  ** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27  ** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
28  ** BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29  ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
30  ** OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
31  ** EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  **
33  **/
34 
35 /**
36  ** MOUSED.C
37  **
38  ** Mouse daemon : listens to a serial port, the bus mouse interface, or
39  ** the PS/2 mouse port for mouse data stream, interprets data and passes
40  ** ioctls off to the console driver.
41  **
42  ** The mouse interface functions are derived closely from the mouse
43  ** handler in the XFree86 X server.  Many thanks to the XFree86 people
44  ** for their great work!
45  **
46  **/
47 
48 #include <sys/cdefs.h>
49 
50 #ifndef lint
51 __RCSID("$NetBSD: moused.c,v 1.6 2002/04/22 13:08:34 wiz Exp $");
52 #endif /* not lint */
53 
54 #include <ctype.h>
55 #include <err.h>
56 #include <errno.h>
57 #include <fcntl.h>
58 #include <limits.h>
59 #include <stdio.h>
60 #include <stdlib.h>
61 #include <stdarg.h>
62 #include <string.h>
63 #include <ctype.h>
64 #include <signal.h>
65 #include <setjmp.h>
66 #include <termios.h>
67 #include <syslog.h>
68 #include "mouse.h"
69 #include <sys/ioctl.h>
70 #include <dev/wscons/wsconsio.h>
71 #include <sys/types.h>
72 #include <sys/time.h>
73 #include <sys/socket.h>
74 #include <sys/un.h>
75 #include <unistd.h>
76 
77 #define MAX_CLICKTHRESHOLD	2000	/* 2 seconds */
78 #define MAX_BUTTON2TIMEOUT	2000	/* 2 seconds */
79 #define DFLT_CLICKTHRESHOLD	 500	/* 0.5 second */
80 #define DFLT_BUTTON2TIMEOUT	 100	/* 0.1 second */
81 
82 /* Abort 3-button emulation delay after this many movement events. */
83 #define BUTTON2_MAXMOVE	3
84 
85 #define TRUE		1
86 #define FALSE		0
87 
88 #define MOUSE_XAXIS	(-1)
89 #define MOUSE_YAXIS	(-2)
90 
91 /* Logitech PS2++ protocol */
92 #define MOUSE_PS2PLUS_CHECKBITS(b)	\
93 			((((b[2] & 0x03) << 2) | 0x02) == (b[1] & 0x0f))
94 #define MOUSE_PS2PLUS_PACKET_TYPE(b)	\
95 			(((b[0] & 0x30) >> 2) | ((b[1] & 0x30) >> 4))
96 
97 #define	ChordMiddle	0x0001
98 #define Emulate3Button	0x0002
99 #define ClearDTR	0x0004
100 #define ClearRTS	0x0008
101 #define NoPnP		0x0010
102 
103 #define ID_NONE		0
104 #define ID_PORT		1
105 #define ID_IF		2
106 #define ID_TYPE 	4
107 #define ID_MODEL	8
108 #define ID_ALL		(ID_PORT | ID_IF | ID_TYPE | ID_MODEL)
109 
110 /* structures */
111 
112 /* symbol table entry */
113 typedef struct {
114     char *name;
115     int val;
116     int val2;
117 } symtab_t;
118 
119 /* serial PnP ID string */
120 typedef struct {
121     int revision;	/* PnP revision, 100 for 1.00 */
122     char *eisaid;	/* EISA ID including mfr ID and product ID */
123     char *serial;	/* serial No, optional */
124     char *class;	/* device class, optional */
125     char *compat;	/* list of compatible drivers, optional */
126     char *description;	/* product description, optional */
127     int neisaid;	/* length of the above fields... */
128     int nserial;
129     int nclass;
130     int ncompat;
131     int ndescription;
132 } pnpid_t;
133 
134 /* global variables */
135 
136 int	dbg = 0;
137 int	nodaemon = FALSE;
138 int	background = FALSE;
139 int	identify = ID_NONE;
140 char	*pidfile = "/var/run/moused.pid";
141 
142 /* local variables */
143 
144 /* interface (the table must be ordered by MOUSE_IF_XXX in mouse.h) */
145 static symtab_t rifs[] = {
146     { "serial",		MOUSE_IF_SERIAL },
147     { "bus",		MOUSE_IF_BUS },
148     { "inport",		MOUSE_IF_INPORT },
149     { "ps/2",		MOUSE_IF_PS2 },
150     { "sysmouse",	MOUSE_IF_SYSMOUSE },
151     { "usb",		MOUSE_IF_USB },
152     { NULL,		MOUSE_IF_UNKNOWN },
153 };
154 
155 /* types (the table must be ordered by MOUSE_PROTO_XXX in mouse.h) */
156 static char *rnames[] = {
157     "microsoft",
158     "mousesystems",
159     "logitech",
160     "mmseries",
161     "mouseman",
162     "busmouse",
163     "inportmouse",
164     "ps/2",
165     "mmhitab",
166     "glidepoint",
167     "intellimouse",
168     "thinkingmouse",
169     "sysmouse",
170     "x10mouseremote",
171     "kidspad",
172 #if notyet
173     "mariqua",
174 #endif
175     NULL
176 };
177 
178 /* models */
179 static symtab_t	rmodels[] = {
180     { "NetScroll",		MOUSE_MODEL_NETSCROLL },
181     { "NetMouse/NetScroll Optical", MOUSE_MODEL_NET },
182     { "GlidePoint",		MOUSE_MODEL_GLIDEPOINT },
183     { "ThinkingMouse",		MOUSE_MODEL_THINK },
184     { "IntelliMouse",		MOUSE_MODEL_INTELLI },
185     { "EasyScroll/SmartScroll",	MOUSE_MODEL_EASYSCROLL },
186     { "MouseMan+",		MOUSE_MODEL_MOUSEMANPLUS },
187     { "Kidspad",		MOUSE_MODEL_KIDSPAD },
188     { "VersaPad",		MOUSE_MODEL_VERSAPAD },
189     { "IntelliMouse Explorer",	MOUSE_MODEL_EXPLORER },
190     { "4D Mouse",		MOUSE_MODEL_4D },
191     { "4D+ Mouse",		MOUSE_MODEL_4DPLUS },
192     { "generic",		MOUSE_MODEL_GENERIC },
193     { NULL, 			MOUSE_MODEL_UNKNOWN },
194 };
195 
196 /* PnP EISA/product IDs */
197 static symtab_t pnpprod[] = {
198     /* Kensignton ThinkingMouse */
199     { "KML0001",	MOUSE_PROTO_THINK,	MOUSE_MODEL_THINK },
200     /* MS IntelliMouse */
201     { "MSH0001",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
202     /* MS IntelliMouse TrackBall */
203     { "MSH0004",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
204     /* Tremon Wheel Mouse MUSD */
205     { "HTK0001",        MOUSE_PROTO_INTELLI,    MOUSE_MODEL_INTELLI },
206     /* Genius PnP Mouse */
207     { "KYE0001",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
208     /* MouseSystems SmartScroll Mouse (OEM from Genius?) */
209     { "KYE0002",	MOUSE_PROTO_MS,		MOUSE_MODEL_EASYSCROLL },
210     /* Genius NetMouse */
211     { "KYE0003",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_NET },
212     /* Genius Kidspad, Easypad and other tablets */
213     { "KYE0005",	MOUSE_PROTO_KIDSPAD,	MOUSE_MODEL_KIDSPAD },
214     /* Genius EZScroll */
215     { "KYEEZ00",	MOUSE_PROTO_MS,		MOUSE_MODEL_EASYSCROLL },
216     /* Logitech Cordless MouseMan Wheel */
217     { "LGI8033",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
218     /* Logitech MouseMan (new 4 button model) */
219     { "LGI800C",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
220     /* Logitech MouseMan+ */
221     { "LGI8050",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
222     /* Logitech FirstMouse+ */
223     { "LGI8051",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
224     /* Logitech serial */
225     { "LGI8001",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
226     /* A4 Tech 4D/4D+ Mouse */
227     { "A4W0005",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_4D },
228     /* 8D Scroll Mouse */
229     { "PEC9802",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
230     /* Mitsumi Wireless Scroll Mouse */
231     { "MTM6401",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
232 
233     /* MS bus */
234     { "PNP0F00",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
235     /* MS serial */
236     { "PNP0F01",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
237     /* MS InPort */
238     { "PNP0F02",	MOUSE_PROTO_INPORT,	MOUSE_MODEL_GENERIC },
239     /* MS PS/2 */
240     { "PNP0F03",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
241     /*
242      * EzScroll returns PNP0F04 in the compatible device field; but it
243      * doesn't look compatible... XXX
244      */
245     /* MouseSystems */
246     { "PNP0F04",	MOUSE_PROTO_MSC,	MOUSE_MODEL_GENERIC },
247     /* MouseSystems */
248     { "PNP0F05",	MOUSE_PROTO_MSC,	MOUSE_MODEL_GENERIC },
249 #if notyet
250     /* Genius Mouse */
251     { "PNP0F06",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
252     /* Genius Mouse */
253     { "PNP0F07",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
254 #endif
255     /* Logitech serial */
256     { "PNP0F08",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
257     /* MS BallPoint serial */
258     { "PNP0F09",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
259     /* MS PnP serial */
260     { "PNP0F0A",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
261     /* MS PnP BallPoint serial */
262     { "PNP0F0B",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
263     /* MS serial comatible */
264     { "PNP0F0C",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
265     /* MS InPort comatible */
266     { "PNP0F0D",	MOUSE_PROTO_INPORT,	MOUSE_MODEL_GENERIC },
267     /* MS PS/2 comatible */
268     { "PNP0F0E",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
269     /* MS BallPoint comatible */
270     { "PNP0F0F",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
271 #if notyet
272     /* TI QuickPort */
273     { "PNP0F10",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
274 #endif
275     /* MS bus comatible */
276     { "PNP0F11",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
277     /* Logitech PS/2 */
278     { "PNP0F12",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
279     /* PS/2 */
280     { "PNP0F13",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
281 #if notyet
282     /* MS Kids Mouse */
283     { "PNP0F14",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
284 #endif
285     /* Logitech bus */
286     { "PNP0F15",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
287 #if notyet
288     /* Logitech SWIFT */
289     { "PNP0F16",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
290 #endif
291     /* Logitech serial compat */
292     { "PNP0F17",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
293     /* Logitech bus compatible */
294     { "PNP0F18",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
295     /* Logitech PS/2 compatible */
296     { "PNP0F19",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
297 #if notyet
298     /* Logitech SWIFT compatible */
299     { "PNP0F1A",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
300     /* HP Omnibook */
301     { "PNP0F1B",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
302     /* Compaq LTE TrackBall PS/2 */
303     { "PNP0F1C",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
304     /* Compaq LTE TrackBall serial */
305     { "PNP0F1D",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
306     /* MS Kidts Trackball */
307     { "PNP0F1E",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
308 #endif
309     /* Interlink VersaPad */
310     { "LNK0001",	MOUSE_PROTO_VERSAPAD,	MOUSE_MODEL_VERSAPAD },
311 
312     { NULL,		MOUSE_PROTO_UNKNOWN,	MOUSE_MODEL_GENERIC },
313 };
314 
315 /* the table must be ordered by MOUSE_PROTO_XXX in mouse.h */
316 static unsigned short rodentcflags[] =
317 {
318     (CS7	           | CREAD | CLOCAL | HUPCL ),	/* MicroSoft */
319     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL ),	/* MouseSystems */
320     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL ),	/* Logitech */
321     (CS8 | PARENB | PARODD | CREAD | CLOCAL | HUPCL ),	/* MMSeries */
322     (CS7		   | CREAD | CLOCAL | HUPCL ),	/* MouseMan */
323     0,							/* Bus */
324     0,							/* InPort */
325     0,							/* PS/2 */
326     (CS8		   | CREAD | CLOCAL | HUPCL ),	/* MM HitTablet */
327     (CS7	           | CREAD | CLOCAL | HUPCL ),	/* GlidePoint */
328     (CS7                   | CREAD | CLOCAL | HUPCL ),	/* IntelliMouse */
329     (CS7                   | CREAD | CLOCAL | HUPCL ),	/* Thinking Mouse */
330     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL ),	/* sysmouse */
331     (CS7	           | CREAD | CLOCAL | HUPCL ),	/* X10 MouseRemote */
332     (CS8 | PARENB | PARODD | CREAD | CLOCAL | HUPCL ),	/* kidspad etc. */
333     (CS8		   | CREAD | CLOCAL | HUPCL ),	/* VersaPad */
334 #if notyet
335     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL ),	/* Mariqua */
336 #endif
337 };
338 
339 static struct rodentparam {
340     int flags;
341     char *portname;		/* /dev/XXX */
342     int rtype;			/* MOUSE_PROTO_XXX */
343     int level;			/* operation level: 0 or greater */
344     int baudrate;
345     int rate;			/* report rate */
346     int resolution;		/* MOUSE_RES_XXX or a positive number */
347     int zmap[4];		/* MOUSE_{X|Y}AXIS or a button number */
348     int wmode;			/* wheel mode button number */
349     int mfd;			/* mouse file descriptor */
350     int cfd;			/* /dev/wsmousectl file descriptor */
351     int mremsfd;		/* mouse remote server file descriptor */
352     int mremcfd;		/* mouse remote client file descriptor */
353     long clickthreshold;	/* double click speed in msec */
354     long button2timeout;	/* 3 button emulation timeout */
355     mousehw_t hw;		/* mouse device hardware information */
356     mousemode_t mode;		/* protocol information */
357     float accelx;		/* Acceleration in the X axis */
358     float accely;		/* Acceleration in the Y axis */
359 } rodent = {
360     flags : 0,
361     portname : NULL,
362     rtype : MOUSE_PROTO_UNKNOWN,
363     level : -1,
364     baudrate : 1200,
365     rate : 0,
366     resolution : MOUSE_RES_UNKNOWN,
367     zmap: { 0, 0, 0, 0 },
368     wmode: 0,
369     mfd : -1,
370     cfd : -1,
371     mremsfd : -1,
372     mremcfd : -1,
373     clickthreshold : DFLT_CLICKTHRESHOLD,
374     button2timeout : DFLT_BUTTON2TIMEOUT,
375     accelx : 1.0,
376     accely : 1.0,
377 };
378 
379 /* button status */
380 struct button_state {
381     int count;		/* 0: up, 1: single click, 2: double click,... */
382     struct timeval tv;	/* timestamp on the last button event */
383 };
384 static struct button_state	bstate[MOUSE_MAXBUTTON]; /* button state */
385 static struct button_state	*mstate[MOUSE_MAXBUTTON];/* mapped button st.*/
386 static struct button_state	zstate[4];		 /* Z/W axis state */
387 
388 /* state machine for 3 button emulation */
389 
390 #define S0	0	/* start */
391 #define S1	1	/* button 1 delayed down */
392 #define S2	2	/* button 3 delayed down */
393 #define S3	3	/* both buttons down -> button 2 down */
394 #define S4	4	/* button 1 delayed up */
395 #define S5	5	/* button 1 down */
396 #define S6	6	/* button 3 down */
397 #define S7	7	/* both buttons down */
398 #define S8	8	/* button 3 delayed up */
399 #define S9	9	/* button 1 or 3 up after S3 */
400 
401 #define A(b1, b3)	(((b1) ? 2 : 0) | ((b3) ? 1 : 0))
402 #define A_TIMEOUT	4
403 #define S_DELAYED(st)	(states[st].s[A_TIMEOUT] != (st))
404 
405 static struct {
406     int s[A_TIMEOUT + 1];
407     int buttons;
408     int mask;
409     int timeout;
410 } states[10] = {
411     /* S0 */
412     { { S0, S2, S1, S3, S0 }, 0, ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN), FALSE },
413     /* S1 */
414     { { S4, S2, S1, S3, S5 }, 0, ~MOUSE_BUTTON1DOWN, FALSE },
415     /* S2 */
416     { { S8, S2, S1, S3, S6 }, 0, ~MOUSE_BUTTON3DOWN, FALSE },
417     /* S3 */
418     { { S0, S9, S9, S3, S3 }, MOUSE_BUTTON2DOWN, ~0, FALSE },
419     /* S4 */
420     { { S0, S2, S1, S3, S0 }, MOUSE_BUTTON1DOWN, ~0, TRUE },
421     /* S5 */
422     { { S0, S2, S5, S7, S5 }, MOUSE_BUTTON1DOWN, ~0, FALSE },
423     /* S6 */
424     { { S0, S6, S1, S7, S6 }, MOUSE_BUTTON3DOWN, ~0, FALSE },
425     /* S7 */
426     { { S0, S6, S5, S7, S7 }, MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN, ~0, FALSE },
427     /* S8 */
428     { { S0, S2, S1, S3, S0 }, MOUSE_BUTTON3DOWN, ~0, TRUE },
429     /* S9 */
430     { { S0, S9, S9, S3, S9 }, 0, ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN), FALSE },
431 };
432 static int		mouse_button_state;
433 static struct timeval	mouse_button_state_tv;
434 static int		mouse_move_delayed;
435 
436 static jmp_buf env;
437 
438 /* function prototypes */
439 
440 static void	moused(char *);
441 static void	hup(int sig);
442 static void	cleanup(int sig);
443 static void	usage(void);
444 
445 static int	r_identify(void);
446 static char	*r_if(int type);
447 static char	*r_name(int type);
448 static char	*r_model(int model);
449 static void	r_init(void);
450 static int	r_protocol(u_char b, mousestatus_t *act);
451 static int	r_statetrans(mousestatus_t *a1, mousestatus_t *a2, int trans);
452 static int	r_installmap(char *arg);
453 static void	r_map(mousestatus_t *act1, mousestatus_t *act2);
454 static void	r_timestamp(mousestatus_t *act);
455 static int	r_timeout(void);
456 static void	setmousespeed(int old, int new, unsigned cflag);
457 
458 static int	pnpwakeup1(void);
459 static int	pnpwakeup2(void);
460 static int	pnpgets(char *buf);
461 static int	pnpparse(pnpid_t *id, char *buf, int len);
462 static symtab_t	*pnpproto(pnpid_t *id);
463 
464 static symtab_t	*gettoken(symtab_t *tab, char *s, int len);
465 static char	*gettokenname(symtab_t *tab, int val);
466 
467 static void wsev(int ty, int val);
468 
469 static int kidspad(u_char rxc, mousestatus_t *act);
470 
471 static void
472 debug(const char *fmt, ...)
473 {
474 	va_list ap;
475 
476 	va_start(ap, fmt);
477 	if (dbg && nodaemon)
478 		vwarnx(fmt, ap);
479 	va_end(ap);
480 }
481 
482 static void
483 logerr(int e, const char *fmt, ...)
484 {
485 	va_list ap;
486 
487 	va_start(ap, fmt);
488 	if (background) {
489 		int saveerrno = errno;
490 		vsyslog(LOG_DAEMON | LOG_ERR, fmt, ap);
491 		errno = saveerrno;
492 		syslog(LOG_DAEMON | LOG_ERR, "%m");
493 		exit(e);
494 	} else
495 		verr(e, fmt, ap);
496 	va_end(ap);
497 }
498 
499 static void
500 logwarn(const char *fmt, ...)
501 {
502 	va_list ap;
503 
504 	va_start(ap, fmt);
505 	if (background) {
506 		int saveerrno = errno;
507 		vsyslog(LOG_DAEMON | LOG_WARNING, fmt, ap);
508 		errno = saveerrno;
509 		syslog(LOG_DAEMON | LOG_WARNING, "%m");
510 	} else
511 		vwarn(fmt, ap);
512 	va_end(ap);
513 }
514 
515 static void
516 logwarnx(const char *fmt, ...)
517 {
518 	va_list ap;
519 
520 	va_start(ap, fmt);
521 	if (background)
522 		vsyslog(LOG_DAEMON | LOG_WARNING, fmt, ap);
523 	else
524 		vwarnx(fmt, ap);
525 	va_end(ap);
526 }
527 
528 int
529 main(int argc, char *argv[])
530 {
531     int c;
532     int	i;
533     int	j;
534     char *ctldev = "/dev/wsmuxctl0";
535 
536     for (i = 0; i < MOUSE_MAXBUTTON; ++i)
537 	mstate[i] = &bstate[i];
538 
539     while((c = getopt(argc,argv,"3DE:F:I:PRS:W:a:cdfhi:l:m:p:r:st:w:z:")) != -1)
540 	switch(c) {
541 
542 	case 'W':
543 	    ctldev = optarg;
544 	    break;
545 
546 	case '3':
547 	    rodent.flags |= Emulate3Button;
548 	    break;
549 
550 	case 'E':
551 	    rodent.button2timeout = atoi(optarg);
552 	    if ((rodent.button2timeout < 0) ||
553 	        (rodent.button2timeout > MAX_BUTTON2TIMEOUT)) {
554 	        warnx("invalid argument `%s'", optarg);
555 	        usage();
556 	    }
557 	    break;
558 
559 	case 'a':
560 	    i = sscanf(optarg, "%f,%f", &rodent.accelx, &rodent.accely);
561 	    if (i == 0) {
562 		warnx("invalid acceleration argument '%s'", optarg);
563 		usage();
564 	    }
565 
566 	    if (i == 1)
567 		rodent.accely = rodent.accelx;
568 
569 	    break;
570 
571 	case 'c':
572 	    rodent.flags |= ChordMiddle;
573 	    break;
574 
575 	case 'd':
576 	    ++dbg;
577 	    break;
578 
579 	case 'f':
580 	    nodaemon = TRUE;
581 	    break;
582 
583 	case 'i':
584 	    if (strcmp(optarg, "all") == 0)
585 	        identify = ID_ALL;
586 	    else if (strcmp(optarg, "port") == 0)
587 	        identify = ID_PORT;
588 	    else if (strcmp(optarg, "if") == 0)
589 	        identify = ID_IF;
590 	    else if (strcmp(optarg, "type") == 0)
591 	        identify = ID_TYPE;
592 	    else if (strcmp(optarg, "model") == 0)
593 	        identify = ID_MODEL;
594 	    else {
595 	        warnx("invalid argument `%s'", optarg);
596 	        usage();
597 	    }
598 	    nodaemon = TRUE;
599 	    break;
600 
601 	case 'l':
602 	    rodent.level = atoi(optarg);
603 	    if ((rodent.level < 0) || (rodent.level > 4)) {
604 	        warnx("invalid argument `%s'", optarg);
605 	        usage();
606 	    }
607 	    break;
608 
609 	case 'm':
610 	    if (!r_installmap(optarg)) {
611 	        warnx("invalid argument `%s'", optarg);
612 	        usage();
613 	    }
614 	    break;
615 
616 	case 'p':
617 	    rodent.portname = optarg;
618 	    break;
619 
620 	case 'r':
621 	    if (strcmp(optarg, "high") == 0)
622 	        rodent.resolution = MOUSE_RES_HIGH;
623 	    else if (strcmp(optarg, "medium-high") == 0)
624 	        rodent.resolution = MOUSE_RES_HIGH;
625 	    else if (strcmp(optarg, "medium-low") == 0)
626 	        rodent.resolution = MOUSE_RES_MEDIUMLOW;
627 	    else if (strcmp(optarg, "low") == 0)
628 	        rodent.resolution = MOUSE_RES_LOW;
629 	    else if (strcmp(optarg, "default") == 0)
630 	        rodent.resolution = MOUSE_RES_DEFAULT;
631 	    else {
632 	        rodent.resolution = atoi(optarg);
633 	        if (rodent.resolution <= 0) {
634 	            warnx("invalid argument `%s'", optarg);
635 	            usage();
636 	        }
637 	    }
638 	    break;
639 
640 	case 's':
641 	    rodent.baudrate = 9600;
642 	    break;
643 
644 	case 'w':
645 	    i = atoi(optarg);
646 	    if ((i <= 0) || (i > MOUSE_MAXBUTTON)) {
647 		warnx("invalid argument `%s'", optarg);
648 		usage();
649 	    }
650 	    rodent.wmode = 1 << (i - 1);
651 	    break;
652 
653 	case 'z':
654 	    if (strcmp(optarg, "x") == 0)
655 		rodent.zmap[0] = MOUSE_XAXIS;
656 	    else if (strcmp(optarg, "y") == 0)
657 		rodent.zmap[0] = MOUSE_YAXIS;
658             else {
659 		i = atoi(optarg);
660 		/*
661 		 * Use button i for negative Z axis movement and
662 		 * button (i + 1) for positive Z axis movement.
663 		 */
664 		if ((i <= 0) || (i > MOUSE_MAXBUTTON - 1)) {
665 	            warnx("invalid argument `%s'", optarg);
666 	            usage();
667 		}
668 		rodent.zmap[0] = i;
669 		rodent.zmap[1] = i + 1;
670 		debug("optind: %d, optarg: '%s'", optind, optarg);
671 		for (j = 1; j < 4; ++j) {
672 		    if ((optind >= argc) || !isdigit(*argv[optind]))
673 			break;
674 		    i = atoi(argv[optind]);
675 		    if ((i <= 0) || (i > MOUSE_MAXBUTTON - 1)) {
676 			warnx("invalid argument `%s'", argv[optind]);
677 			usage();
678 		    }
679 		    rodent.zmap[j] = i;
680 		    ++optind;
681 		}
682 		if ((rodent.zmap[2] != 0) && (rodent.zmap[3] == 0))
683 		    rodent.zmap[3] = rodent.zmap[2] + 1;
684 	    }
685 	    break;
686 
687 	case 'C':
688 	    rodent.clickthreshold = atoi(optarg);
689 	    if ((rodent.clickthreshold < 0) ||
690 	        (rodent.clickthreshold > MAX_CLICKTHRESHOLD)) {
691 	        warnx("invalid argument `%s'", optarg);
692 	        usage();
693 	    }
694 	    break;
695 
696 	case 'D':
697 	    rodent.flags |= ClearDTR;
698 	    break;
699 
700 	case 'F':
701 	    rodent.rate = atoi(optarg);
702 	    if (rodent.rate <= 0) {
703 	        warnx("invalid argument `%s'", optarg);
704 	        usage();
705 	    }
706 	    break;
707 
708 	case 'I':
709 	    pidfile = optarg;
710 	    break;
711 
712 	case 'P':
713 	    rodent.flags |= NoPnP;
714 	    break;
715 
716 	case 'R':
717 	    rodent.flags |= ClearRTS;
718 	    break;
719 
720 	case 'S':
721 	    rodent.baudrate = atoi(optarg);
722 	    if (rodent.baudrate <= 0) {
723 	        warnx("invalid argument `%s'", optarg);
724 	        usage();
725 	    }
726 	    debug("rodent baudrate %d", rodent.baudrate);
727 	    break;
728 
729 	case 't':
730 	    if (strcmp(optarg, "auto") == 0) {
731 		rodent.rtype = MOUSE_PROTO_UNKNOWN;
732 		rodent.flags &= ~NoPnP;
733 		rodent.level = -1;
734 		break;
735 	    }
736 	    for (i = 0; rnames[i]; i++)
737 		if (strcmp(optarg, rnames[i]) == 0) {
738 		    rodent.rtype = i;
739 		    rodent.flags |= NoPnP;
740 		    rodent.level = (i == MOUSE_PROTO_SYSMOUSE) ? 1 : 0;
741 		    break;
742 		}
743 	    if (rnames[i])
744 		break;
745 	    warnx("no such mouse type `%s'", optarg);
746 	    usage();
747 
748 	case 'h':
749 	case '?':
750 	default:
751 	    usage();
752 	}
753 
754     /* fix Z axis mapping */
755     for (i = 0; i < 4; ++i) {
756 	if (rodent.zmap[i] > 0) {
757 	    for (j = 0; j < MOUSE_MAXBUTTON; ++j) {
758 		if (mstate[j] == &bstate[rodent.zmap[i] - 1])
759 		    mstate[j] = &zstate[i];
760 	    }
761 	    rodent.zmap[i] = 1 << (rodent.zmap[i] - 1);
762 	}
763     }
764 
765     /* the default port name */
766     switch(rodent.rtype) {
767     case MOUSE_PROTO_INPORT:
768         /* INPORT and BUS are the same... */
769 	rodent.rtype = MOUSE_PROTO_BUS;
770 	/* FALL THROUGH */
771     default:
772 	if (rodent.portname)
773 	    break;
774 	warnx("no port name specified");
775 	usage();
776     }
777 
778     for (;;) {
779 	if (setjmp(env) == 0) {
780 	    signal(SIGHUP, hup);
781 	    signal(SIGINT , cleanup);
782 	    signal(SIGQUIT, cleanup);
783 	    signal(SIGTERM, cleanup);
784             if ((rodent.mfd = open(rodent.portname, O_RDWR | O_NONBLOCK, 0))
785 		== -1)
786 	        logerr(1, "unable to open %s", rodent.portname);
787             if (r_identify() == MOUSE_PROTO_UNKNOWN) {
788 	        logwarnx("cannot determine mouse type on %s", rodent.portname);
789 	        close(rodent.mfd);
790 	        rodent.mfd = -1;
791             }
792 
793 	    /* print some information */
794             if (identify != ID_NONE) {
795 		if (identify == ID_ALL)
796                     printf("%s %s %s %s\n",
797 		        rodent.portname, r_if(rodent.hw.iftype),
798 		        r_name(rodent.rtype), r_model(rodent.hw.model));
799 		else if (identify & ID_PORT)
800 		    printf("%s\n", rodent.portname);
801 		else if (identify & ID_IF)
802 		    printf("%s\n", r_if(rodent.hw.iftype));
803 		else if (identify & ID_TYPE)
804 		    printf("%s\n", r_name(rodent.rtype));
805 		else if (identify & ID_MODEL)
806 		    printf("%s\n", r_model(rodent.hw.model));
807 		exit(0);
808 	    } else {
809                 debug("port: %s  interface: %s  type: %s  model: %s",
810 		    rodent.portname, r_if(rodent.hw.iftype),
811 		    r_name(rodent.rtype), r_model(rodent.hw.model));
812 	    }
813 
814 	    if (rodent.mfd == -1) {
815 	        /*
816 	         * We cannot continue because of error.  Exit if the
817 		 * program has not become a daemon.  Otherwise, block
818 		 * until the the user corrects the problem and issues SIGHUP.
819 	         */
820 	        if (!background)
821 		    exit(1);
822 	        sigpause(0);
823 	    }
824 
825             r_init();			/* call init function */
826 	    moused(ctldev);
827 	}
828 
829 	if (rodent.mfd != -1)
830 	    close(rodent.mfd);
831 	if (rodent.cfd != -1)
832 	    close(rodent.cfd);
833 	rodent.mfd = rodent.cfd = -1;
834     }
835     /* NOT REACHED */
836 
837     exit(0);
838 }
839 
840 static void
841 wsev(int ty, int val)
842 {
843     struct wscons_event ev;
844 
845     ev.type = ty;
846     ev.value = val;
847     if (dbg)
848 	printf("wsev: type=%d value=%d\n", ty, val);
849     if (ioctl(rodent.cfd, WSMUXIO_INJECTEVENT, &ev) < 0)
850 	logwarn("muxio inject event");
851 }
852 
853 static void
854 moused(char *wsm)
855 {
856     mousestatus_t action0;		/* original mouse action */
857     mousestatus_t action;		/* interrim buffer */
858     mousestatus_t action2;		/* mapped action */
859     int lastbutton = 0;
860     int button;
861     struct timeval timeout;
862     fd_set fds;
863     u_char b;
864     FILE *fp;
865     int flags;
866     int c;
867     int i;
868 
869     if ((rodent.cfd = open(wsm, O_WRONLY, 0)) == -1)
870 	logerr(1, "cannot open %s", wsm);
871 
872     if (!nodaemon && !background) {
873 	if (daemon(0, 0)) {
874 	    logerr(1, "failed to become a daemon");
875 	} else {
876 	    background = TRUE;
877 	    fp = fopen(pidfile, "w");
878 	    if (fp != NULL) {
879 		fprintf(fp, "%d\n", getpid());
880 		fclose(fp);
881 	    }
882 	}
883     }
884 
885     /* clear mouse data */
886     bzero(&action0, sizeof(action0));
887     bzero(&action, sizeof(action));
888     bzero(&action2, sizeof(action2));
889     mouse_button_state = S0;
890     gettimeofday(&mouse_button_state_tv, NULL);
891     mouse_move_delayed = 0;
892     for (i = 0; i < MOUSE_MAXBUTTON; ++i) {
893 	bstate[i].count = 0;
894 	bstate[i].tv = mouse_button_state_tv;
895     }
896     for (i = 0; i < sizeof(zstate)/sizeof(zstate[0]); ++i) {
897 	zstate[i].count = 0;
898 	zstate[i].tv = mouse_button_state_tv;
899     }
900 
901     /* process mouse data */
902     timeout.tv_sec = 0;
903     timeout.tv_usec = 20000;		/* 20 msec */
904     for (;;) {
905 
906 	FD_ZERO(&fds);
907 	FD_SET(rodent.mfd, &fds);
908 	if (rodent.mremsfd >= 0)
909 	    FD_SET(rodent.mremsfd, &fds);
910 	if (rodent.mremcfd >= 0)
911 	    FD_SET(rodent.mremcfd, &fds);
912 
913 	c = select(FD_SETSIZE, &fds, NULL, NULL,
914 		   (rodent.flags & Emulate3Button) ? &timeout : NULL);
915 	if (c < 0) {                    /* error */
916 	    logwarn("failed to read from mouse");
917 	    continue;
918 	} else if (c == 0) {            /* timeout */
919 	    /* assert(rodent.flags & Emulate3Button) */
920 	    action0.button = action0.obutton;
921 	    action0.dx = action0.dy = action0.dz = 0;
922 	    action0.flags = flags = 0;
923 	    if (r_timeout() && r_statetrans(&action0, &action, A_TIMEOUT)) {
924 		if (dbg > 2)
925 		    debug("flags:%08x buttons:%08x obuttons:%08x",
926 			  action.flags, action.button, action.obutton);
927 	    } else {
928 		action0.obutton = action0.button;
929 		continue;
930 	    }
931 	} else {
932 #if 0
933 	    /*  MouseRemote client connect/disconnect  */
934 	    if ((rodent.mremsfd >= 0) && FD_ISSET(rodent.mremsfd, &fds)) {
935 		mremote_clientchg(TRUE);
936 		continue;
937 	    }
938 	    if ((rodent.mremcfd >= 0) && FD_ISSET(rodent.mremcfd, &fds)) {
939 		mremote_clientchg(FALSE);
940 		continue;
941 	    }
942 #endif
943 	    /* mouse movement */
944 	    if (read(rodent.mfd, &b, 1) == -1) {
945 		if (errno == EWOULDBLOCK)
946 		    continue;
947 		else
948 		    return;
949 	    }
950 	    if ((flags = r_protocol(b, &action0)) == 0)
951 		continue;
952 	    r_timestamp(&action0);
953 	    r_statetrans(&action0, &action,
954 	    		 A(action0.button & MOUSE_BUTTON1DOWN,
955 	    		   action0.button & MOUSE_BUTTON3DOWN));
956 	    debug("flags:%08x buttons:%08x obuttons:%08x", action.flags,
957 		  action.button, action.obutton);
958 	}
959 	action0.obutton = action0.button;
960 	flags &= MOUSE_POSCHANGED;
961 	flags |= action.obutton ^ action.button;
962 	action.flags = flags;
963 
964 	if (flags) {			/* handler detected action */
965 	    r_map(&action, &action2);
966 	    debug("activity : buttons 0x%08x  dx %d  dy %d  dz %d",
967 		action2.button, action2.dx, action2.dy, action2.dz);
968 
969             if (dbg > 1)
970 	        printf("buttons=%x x=%d y=%d z=%d\n", action2.button,
971 		    (int)(action2.dx * rodent.accelx),
972 		    (int)(action2.dy * rodent.accely),
973 		    (int)action2.dz);
974 	    if (action2.dx != 0 && dbg < 2)
975 		wsev(WSCONS_EVENT_MOUSE_DELTA_X, action2.dx * rodent.accelx);
976 	    if (action2.dy != 0 && dbg < 2)
977 		wsev(WSCONS_EVENT_MOUSE_DELTA_Y, -action2.dy * rodent.accely);
978 	    if (action2.dz != 0 && dbg < 2)
979 		wsev(WSCONS_EVENT_MOUSE_DELTA_Z, action2.dz);
980 	    button = lastbutton ^ action2.button;
981 	    lastbutton = action2.button;
982 	    printf("diff=%x buts=%x\n", button, lastbutton);
983 	    for (i = 0; i < 3; i ++) {
984 		if ((button & (1<<i)) && dbg < 2) {
985 		    wsev(lastbutton & (1<<i) ? WSCONS_EVENT_MOUSE_DOWN :
986 			 WSCONS_EVENT_MOUSE_UP, i);
987 		}
988 	    }
989 
990             /*
991 	     * If the Z axis movement is mapped to a imaginary physical
992 	     * button, we need to cook up a corresponding button `up' event
993 	     * after sending a button `down' event.
994 	     */
995             if ((rodent.zmap[0] > 0) && (action.dz != 0)) {
996 		action.obutton = action.button;
997 		action.dx = action.dy = action.dz = 0;
998 	        r_map(&action, &action2);
999 	        debug("activity : buttons 0x%08x  dx %d  dy %d  dz %d",
1000 		    action2.button, action2.dx, action2.dy, action2.dz);
1001 
1002 		/* XXX emplement this */
1003 #if 0
1004 	        if (extioctl) {
1005 	            r_click(&action2);
1006 	        } else {
1007 	            mouse.operation = MOUSE_ACTION;
1008 	            mouse.u.data.buttons = action2.button;
1009 		    mouse.u.data.x = mouse.u.data.y = mouse.u.data.z = 0;
1010 		    if (dbg < 2)
1011 	                ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
1012 	        }
1013 #endif
1014 	    }
1015 	}
1016     }
1017     /* NOT REACHED */
1018 }
1019 
1020 static void
1021 hup(int sig)
1022 {
1023     longjmp(env, 1);
1024 }
1025 
1026 static void
1027 cleanup(int sig)
1028 {
1029     if (rodent.rtype == MOUSE_PROTO_X10MOUSEREM)
1030 	unlink(_PATH_MOUSEREMOTE);
1031     exit(0);
1032 }
1033 
1034 /**
1035  ** usage
1036  **
1037  ** Complain, and free the CPU for more worthy tasks
1038  **/
1039 static void
1040 usage(void)
1041 {
1042     fprintf(stderr, "%s\n%s\n%s\n%s\n",
1043 	"usage: moused [-DRcdfs] [-I file] [-F rate] [-r resolution] [-S baudrate]",
1044 	"              [-a X[,Y]] [-m N=M] [-w N] [-z N]",
1045 	"              [-t <mousetype>] [-3 [-E timeout]] -p <port>",
1046 	"       moused [-d] -i <port|if|type|model|all> -p <port>");
1047     exit(1);
1048 }
1049 
1050 /**
1051  ** Mouse interface code, courtesy of XFree86 3.1.2.
1052  **
1053  ** Note: Various bits have been trimmed, and in my shortsighted enthusiasm
1054  ** to clean, reformat and rationalise naming, it's quite possible that
1055  ** some things in here have been broken.
1056  **
1057  ** I hope not 8)
1058  **
1059  ** The following code is derived from a module marked :
1060  **/
1061 
1062 /* $XConsortium: xf86_Mouse.c,v 1.2 94/10/12 20:33:21 kaleb Exp $ */
1063 /* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86_Mouse.c,v 3.2 1995/01/28
1064  17:03:40 dawes Exp $ */
1065 /*
1066  *
1067  * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
1068  * Copyright 1993 by David Dawes <dawes@physics.su.oz.au>
1069  *
1070  * Permission to use, copy, modify, distribute, and sell this software and its
1071  * documentation for any purpose is hereby granted without fee, provided that
1072  * the above copyright notice appear in all copies and that both that
1073  * copyright notice and this permission notice appear in supporting
1074  * documentation, and that the names of Thomas Roell and David Dawes not be
1075  * used in advertising or publicity pertaining to distribution of the
1076  * software without specific, written prior permission.  Thomas Roell
1077  * and David Dawes makes no representations about the suitability of this
1078  * software for any purpose.  It is provided "as is" without express or
1079  * implied warranty.
1080  *
1081  * THOMAS ROELL AND DAVID DAWES DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
1082  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
1083  * FITNESS, IN NO EVENT SHALL THOMAS ROELL OR DAVID DAWES BE LIABLE FOR ANY
1084  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
1085  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
1086  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
1087  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1088  *
1089  */
1090 
1091 /**
1092  ** GlidePoint support from XFree86 3.2.
1093  ** Derived from the module:
1094  **/
1095 
1096 /* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86_Mouse.c,v 3.19 1996/10/16 14:40:51 dawes Exp $ */
1097 /* $XConsortium: xf86_Mouse.c /main/10 1996/01/30 15:16:12 kaleb $ */
1098 
1099 /* the following table must be ordered by MOUSE_PROTO_XXX in mouse.h */
1100 static unsigned char proto[][7] = {
1101     /*  hd_mask hd_id   dp_mask dp_id   bytes b4_mask b4_id */
1102     { 	0x40,	0x40,	0x40,	0x00,	3,   ~0x23,  0x00 }, /* MicroSoft */
1103     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* MouseSystems */
1104     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* Logitech */
1105     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* MMSeries */
1106     { 	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* MouseMan */
1107     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* Bus */
1108     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* InPort */
1109     {	0xc0,	0x00,	0x00,	0x00,	3,    0x00,  0xff }, /* PS/2 mouse */
1110     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* MM HitTablet */
1111     { 	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* GlidePoint */
1112     { 	0x40,	0x40,	0x40,	0x00,	3,   ~0x3f,  0x00 }, /* IntelliMouse */
1113     { 	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* ThinkingMouse */
1114     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* sysmouse */
1115     { 	0x40,	0x40,	0x40,	0x00,	3,   ~0x23,  0x00 }, /* X10 MouseRem */
1116     {	0x80,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* KIDSPAD */
1117     {	0xc3,	0xc0,	0x00,	0x00,	6,    0x00,  0xff }, /* VersaPad */
1118 #if notyet
1119     {	0xf8,	0x80,	0x00,	0x00,	5,   ~0x2f,  0x10 }, /* Mariqua */
1120 #endif
1121 };
1122 static unsigned char cur_proto[7];
1123 
1124 static int
1125 r_identify(void)
1126 {
1127     char pnpbuf[256];	/* PnP identifier string may be up to 256 bytes long */
1128     pnpid_t pnpid;
1129     symtab_t *t;
1130     int len;
1131 
1132     rodent.level = 0;
1133 
1134     if (rodent.rtype != MOUSE_PROTO_UNKNOWN)
1135         bcopy(proto[rodent.rtype], cur_proto, sizeof(cur_proto));
1136     rodent.mode.protocol = MOUSE_PROTO_UNKNOWN;
1137     rodent.mode.rate = -1;
1138     rodent.mode.resolution = MOUSE_RES_UNKNOWN;
1139     rodent.mode.accelfactor = 0;
1140     rodent.mode.level = 0;
1141 
1142     /* maybe this is an PnP mouse... */
1143     if (rodent.mode.protocol == MOUSE_PROTO_UNKNOWN) {
1144 
1145         if (rodent.flags & NoPnP)
1146             return rodent.rtype;
1147 	if (((len = pnpgets(pnpbuf)) <= 0) || !pnpparse(&pnpid, pnpbuf, len))
1148             return rodent.rtype;
1149 
1150         debug("PnP serial mouse: '%*.*s' '%*.*s' '%*.*s'",
1151 	    pnpid.neisaid, pnpid.neisaid, pnpid.eisaid,
1152 	    pnpid.ncompat, pnpid.ncompat, pnpid.compat,
1153 	    pnpid.ndescription, pnpid.ndescription, pnpid.description);
1154 
1155 	/* we have a valid PnP serial device ID */
1156         rodent.hw.iftype = MOUSE_IF_SERIAL;
1157 	t = pnpproto(&pnpid);
1158 	if (t != NULL) {
1159             rodent.mode.protocol = t->val;
1160             rodent.hw.model = t->val2;
1161 	} else {
1162             rodent.mode.protocol = MOUSE_PROTO_UNKNOWN;
1163 	}
1164 	if (rodent.mode.protocol == MOUSE_PROTO_INPORT)
1165 	    rodent.mode.protocol = MOUSE_PROTO_BUS;
1166 
1167         /* make final adjustment */
1168 	if (rodent.mode.protocol != MOUSE_PROTO_UNKNOWN) {
1169 	    if (rodent.mode.protocol != rodent.rtype) {
1170 		/* Hmm, the device doesn't agree with the user... */
1171                 if (rodent.rtype != MOUSE_PROTO_UNKNOWN)
1172 	            logwarnx("mouse type mismatch (%s != %s), %s is assumed",
1173 		        r_name(rodent.mode.protocol), r_name(rodent.rtype),
1174 		        r_name(rodent.mode.protocol));
1175 	        rodent.rtype = rodent.mode.protocol;
1176                 bcopy(proto[rodent.rtype], cur_proto, sizeof(cur_proto));
1177 	    }
1178 	}
1179     }
1180 
1181     debug("proto params: %02x %02x %02x %02x %d %02x %02x",
1182 	cur_proto[0], cur_proto[1], cur_proto[2], cur_proto[3],
1183 	cur_proto[4], cur_proto[5], cur_proto[6]);
1184 
1185     return rodent.rtype;
1186 }
1187 
1188 static char *
1189 r_if(int iftype)
1190 {
1191     char *s;
1192 
1193     s = gettokenname(rifs, iftype);
1194     return (s == NULL) ? "unknown" : s;
1195 }
1196 
1197 static char *
1198 r_name(int type)
1199 {
1200     return ((type == MOUSE_PROTO_UNKNOWN)
1201 	|| (type > sizeof(rnames)/sizeof(rnames[0]) - 1))
1202 	? "unknown" : rnames[type];
1203 }
1204 
1205 static char *
1206 r_model(int model)
1207 {
1208     char *s;
1209 
1210     s = gettokenname(rmodels, model);
1211     return (s == NULL) ? "unknown" : s;
1212 }
1213 
1214 static void
1215 r_init(void)
1216 {
1217     unsigned char buf[16];	/* scrach buffer */
1218     fd_set fds;
1219     char *s;
1220     char c;
1221     int i;
1222 
1223     /**
1224      ** This comment is a little out of context here, but it contains
1225      ** some useful information...
1226      ********************************************************************
1227      **
1228      ** The following lines take care of the Logitech MouseMan protocols.
1229      **
1230      ** NOTE: There are different versions of both MouseMan and TrackMan!
1231      **       Hence I add another protocol P_LOGIMAN, which the user can
1232      **       specify as MouseMan in his XF86Config file. This entry was
1233      **       formerly handled as a special case of P_MS. However, people
1234      **       who don't have the middle button problem, can still specify
1235      **       Microsoft and use P_MS.
1236      **
1237      ** By default, these mice should use a 3 byte Microsoft protocol
1238      ** plus a 4th byte for the middle button. However, the mouse might
1239      ** have switched to a different protocol before we use it, so I send
1240      ** the proper sequence just in case.
1241      **
1242      ** NOTE: - all commands to (at least the European) MouseMan have to
1243      **         be sent at 1200 Baud.
1244      **       - each command starts with a '*'.
1245      **       - whenever the MouseMan receives a '*', it will switch back
1246      **	 to 1200 Baud. Hence I have to select the desired protocol
1247      **	 first, then select the baud rate.
1248      **
1249      ** The protocols supported by the (European) MouseMan are:
1250      **   -  5 byte packed binary protocol, as with the Mouse Systems
1251      **      mouse. Selected by sequence "*U".
1252      **   -  2 button 3 byte MicroSoft compatible protocol. Selected
1253      **      by sequence "*V".
1254      **   -  3 button 3+1 byte MicroSoft compatible protocol (default).
1255      **      Selected by sequence "*X".
1256      **
1257      ** The following baud rates are supported:
1258      **   -  1200 Baud (default). Selected by sequence "*n".
1259      **   -  9600 Baud. Selected by sequence "*q".
1260      **
1261      ** Selecting a sample rate is no longer supported with the MouseMan!
1262      ** Some additional lines in xf86Config.c take care of ill configured
1263      ** baud rates and sample rates. (The user will get an error.)
1264      */
1265 
1266     switch (rodent.rtype) {
1267 
1268     case MOUSE_PROTO_LOGI:
1269 	/*
1270 	 * The baud rate selection command must be sent at the current
1271 	 * baud rate; try all likely settings
1272 	 */
1273 	setmousespeed(9600, rodent.baudrate, rodentcflags[rodent.rtype]);
1274 	setmousespeed(4800, rodent.baudrate, rodentcflags[rodent.rtype]);
1275 	setmousespeed(2400, rodent.baudrate, rodentcflags[rodent.rtype]);
1276 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1277 	/* select MM series data format */
1278 	write(rodent.mfd, "S", 1);
1279 	setmousespeed(rodent.baudrate, rodent.baudrate,
1280 		      rodentcflags[MOUSE_PROTO_MM]);
1281 	/* select report rate/frequency */
1282 	if      (rodent.rate <= 0)   write(rodent.mfd, "O", 1);
1283 	else if (rodent.rate <= 15)  write(rodent.mfd, "J", 1);
1284 	else if (rodent.rate <= 27)  write(rodent.mfd, "K", 1);
1285 	else if (rodent.rate <= 42)  write(rodent.mfd, "L", 1);
1286 	else if (rodent.rate <= 60)  write(rodent.mfd, "R", 1);
1287 	else if (rodent.rate <= 85)  write(rodent.mfd, "M", 1);
1288 	else if (rodent.rate <= 125) write(rodent.mfd, "Q", 1);
1289 	else			     write(rodent.mfd, "N", 1);
1290 	break;
1291 
1292     case MOUSE_PROTO_LOGIMOUSEMAN:
1293 	/* The command must always be sent at 1200 baud */
1294 	setmousespeed(1200, 1200, rodentcflags[rodent.rtype]);
1295 	write(rodent.mfd, "*X", 2);
1296 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1297 	break;
1298 
1299     case MOUSE_PROTO_HITTAB:
1300 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1301 
1302 	/*
1303 	 * Initialize Hitachi PUMA Plus - Model 1212E to desired settings.
1304 	 * The tablet must be configured to be in MM mode, NO parity,
1305 	 * Binary Format.  xf86Info.sampleRate controls the sensativity
1306 	 * of the tablet.  We only use this tablet for it's 4-button puck
1307 	 * so we don't run in "Absolute Mode"
1308 	 */
1309 	write(rodent.mfd, "z8", 2);	/* Set Parity = "NONE" */
1310 	usleep(50000);
1311 	write(rodent.mfd, "zb", 2);	/* Set Format = "Binary" */
1312 	usleep(50000);
1313 	write(rodent.mfd, "@", 1);	/* Set Report Mode = "Stream" */
1314 	usleep(50000);
1315 	write(rodent.mfd, "R", 1);	/* Set Output Rate = "45 rps" */
1316 	usleep(50000);
1317 	write(rodent.mfd, "I\x20", 2);	/* Set Incrememtal Mode "20" */
1318 	usleep(50000);
1319 	write(rodent.mfd, "E", 1);	/* Set Data Type = "Relative */
1320 	usleep(50000);
1321 
1322 	/* Resolution is in 'lines per inch' on the Hitachi tablet */
1323 	if      (rodent.resolution == MOUSE_RES_LOW) 		c = 'g';
1324 	else if (rodent.resolution == MOUSE_RES_MEDIUMLOW)	c = 'e';
1325 	else if (rodent.resolution == MOUSE_RES_MEDIUMHIGH)	c = 'h';
1326 	else if (rodent.resolution == MOUSE_RES_HIGH)		c = 'd';
1327 	else if (rodent.resolution <=   40) 			c = 'g';
1328 	else if (rodent.resolution <=  100) 			c = 'd';
1329 	else if (rodent.resolution <=  200) 			c = 'e';
1330 	else if (rodent.resolution <=  500) 			c = 'h';
1331 	else if (rodent.resolution <= 1000) 			c = 'j';
1332 	else                                			c = 'd';
1333 	write(rodent.mfd, &c, 1);
1334 	usleep(50000);
1335 
1336 	write(rodent.mfd, "\021", 1);	/* Resume DATA output */
1337 	break;
1338 
1339     case MOUSE_PROTO_THINK:
1340 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1341 	/* the PnP ID string may be sent again, discard it */
1342 	usleep(200000);
1343 	i = FREAD;
1344 	ioctl(rodent.mfd, TIOCFLUSH, &i);
1345 	/* send the command to initialize the beast */
1346 	for (s = "E5E5"; *s; ++s) {
1347 	    write(rodent.mfd, s, 1);
1348 	    FD_ZERO(&fds);
1349 	    FD_SET(rodent.mfd, &fds);
1350 	    if (select(FD_SETSIZE, &fds, NULL, NULL, NULL) <= 0)
1351 		break;
1352 	    read(rodent.mfd, &c, 1);
1353 	    debug("%c", c);
1354 	    if (c != *s)
1355 	        break;
1356 	}
1357 	break;
1358 
1359     case MOUSE_PROTO_MSC:
1360 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1361 	if (rodent.flags & ClearDTR) {
1362 	   i = TIOCM_DTR;
1363 	   ioctl(rodent.mfd, TIOCMBIC, &i);
1364         }
1365         if (rodent.flags & ClearRTS) {
1366 	   i = TIOCM_RTS;
1367 	   ioctl(rodent.mfd, TIOCMBIC, &i);
1368         }
1369 	break;
1370 
1371     case MOUSE_PROTO_SYSMOUSE:
1372 	if (rodent.hw.iftype == MOUSE_IF_SYSMOUSE)
1373 	    setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1374 	/* fall through */
1375 
1376     case MOUSE_PROTO_BUS:
1377     case MOUSE_PROTO_INPORT:
1378     case MOUSE_PROTO_PS2:
1379 	if (rodent.rate >= 0)
1380 	    rodent.mode.rate = rodent.rate;
1381 	if (rodent.resolution != MOUSE_RES_UNKNOWN)
1382 	    rodent.mode.resolution = rodent.resolution;
1383 #if 0
1384 	ioctl(rodent.mfd, MOUSE_SETMODE, &rodent.mode);
1385 #endif
1386 	break;
1387 
1388     case MOUSE_PROTO_X10MOUSEREM:
1389 #if 0
1390 	mremote_serversetup();
1391 #endif
1392 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1393 	break;
1394 
1395 
1396     case MOUSE_PROTO_VERSAPAD:
1397 	tcsendbreak(rodent.mfd, 0);	/* send break for 400 msec */
1398 	i = FREAD;
1399 	ioctl(rodent.mfd, TIOCFLUSH, &i);
1400 	for (i = 0; i < 7; ++i) {
1401 	    FD_ZERO(&fds);
1402 	    FD_SET(rodent.mfd, &fds);
1403 	    if (select(FD_SETSIZE, &fds, NULL, NULL, NULL) <= 0)
1404 		break;
1405 	    read(rodent.mfd, &c, 1);
1406 	    buf[i] = c;
1407 	}
1408 	debug("%s\n", buf);
1409 	if ((buf[0] != 'V') || (buf[1] != 'P')|| (buf[7] != '\r'))
1410 	    break;
1411 	setmousespeed(9600, rodent.baudrate, rodentcflags[rodent.rtype]);
1412 	tcsendbreak(rodent.mfd, 0);	/* send break for 400 msec again */
1413 	for (i = 0; i < 7; ++i) {
1414 	    FD_ZERO(&fds);
1415 	    FD_SET(rodent.mfd, &fds);
1416 	    if (select(FD_SETSIZE, &fds, NULL, NULL, NULL) <= 0)
1417 		break;
1418 	    read(rodent.mfd, &c, 1);
1419 	    debug("%c", c);
1420 	    if (c != buf[i])
1421 		break;
1422 	}
1423 	i = FREAD;
1424 	ioctl(rodent.mfd, TIOCFLUSH, &i);
1425 	break;
1426 
1427     default:
1428 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1429 	break;
1430     }
1431 }
1432 
1433 static int
1434 r_protocol(u_char rBuf, mousestatus_t *act)
1435 {
1436     /* MOUSE_MSS_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
1437     static int butmapmss[4] = {	/* Microsoft, MouseMan, GlidePoint,
1438 				   IntelliMouse, Thinking Mouse */
1439 	0,
1440 	MOUSE_BUTTON3DOWN,
1441 	MOUSE_BUTTON1DOWN,
1442 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1443     };
1444     static int butmapmss2[4] = { /* Microsoft, MouseMan, GlidePoint,
1445 				    Thinking Mouse */
1446 	0,
1447 	MOUSE_BUTTON4DOWN,
1448 	MOUSE_BUTTON2DOWN,
1449 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN,
1450     };
1451     /* MOUSE_INTELLI_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
1452     static int butmapintelli[4] = { /* IntelliMouse, NetMouse, Mie Mouse,
1453 				       MouseMan+ */
1454 	0,
1455 	MOUSE_BUTTON2DOWN,
1456 	MOUSE_BUTTON4DOWN,
1457 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN,
1458     };
1459     /* MOUSE_MSC_BUTTON?UP -> MOUSE_BUTTON?DOWN */
1460     static int butmapmsc[8] = {	/* MouseSystems, MMSeries, Logitech,
1461 				   Bus, sysmouse */
1462 	0,
1463 	MOUSE_BUTTON3DOWN,
1464 	MOUSE_BUTTON2DOWN,
1465 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN,
1466 	MOUSE_BUTTON1DOWN,
1467 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1468 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN,
1469 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN
1470     };
1471     /* MOUSE_PS2_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
1472     static int butmapps2[8] = {	/* PS/2 */
1473 	0,
1474 	MOUSE_BUTTON1DOWN,
1475 	MOUSE_BUTTON3DOWN,
1476 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1477 	MOUSE_BUTTON2DOWN,
1478 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN,
1479 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN,
1480 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN
1481     };
1482     /* for Hitachi tablet */
1483     static int butmaphit[8] = {	/* MM HitTablet */
1484 	0,
1485 	MOUSE_BUTTON3DOWN,
1486 	MOUSE_BUTTON2DOWN,
1487 	MOUSE_BUTTON1DOWN,
1488 	MOUSE_BUTTON4DOWN,
1489 	MOUSE_BUTTON5DOWN,
1490 	MOUSE_BUTTON6DOWN,
1491 	MOUSE_BUTTON7DOWN,
1492     };
1493     /* for serial VersaPad */
1494     static int butmapversa[8] = { /* VersaPad */
1495 	0,
1496 	0,
1497 	MOUSE_BUTTON3DOWN,
1498 	MOUSE_BUTTON3DOWN,
1499 	MOUSE_BUTTON1DOWN,
1500 	MOUSE_BUTTON1DOWN,
1501 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1502 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1503     };
1504     /* for PS/2 VersaPad */
1505     static int butmapversaps2[8] = { /* VersaPad */
1506 	0,
1507 	MOUSE_BUTTON3DOWN,
1508 	0,
1509 	MOUSE_BUTTON3DOWN,
1510 	MOUSE_BUTTON1DOWN,
1511 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1512 	MOUSE_BUTTON1DOWN,
1513 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1514     };
1515     static int           pBufP = 0;
1516     static unsigned char pBuf[8];
1517     static int		 prev_x, prev_y;
1518     static int		 on = FALSE;
1519     int			 x, y;
1520 
1521     debug("received char 0x%x",(int)rBuf);
1522     if (rodent.rtype == MOUSE_PROTO_KIDSPAD)
1523 	return kidspad(rBuf, act) ;
1524 
1525     /*
1526      * Hack for resyncing: We check here for a package that is:
1527      *  a) illegal (detected by wrong data-package header)
1528      *  b) invalid (0x80 == -128 and that might be wrong for MouseSystems)
1529      *  c) bad header-package
1530      *
1531      * NOTE: b) is a voilation of the MouseSystems-Protocol, since values of
1532      *       -128 are allowed, but since they are very seldom we can easily
1533      *       use them as package-header with no button pressed.
1534      * NOTE/2: On a PS/2 mouse any byte is valid as a data byte. Furthermore,
1535      *         0x80 is not valid as a header byte. For a PS/2 mouse we skip
1536      *         checking data bytes.
1537      *         For resyncing a PS/2 mouse we require the two most significant
1538      *         bits in the header byte to be 0. These are the overflow bits,
1539      *         and in case of an overflow we actually lose sync. Overflows
1540      *         are very rare, however, and we quickly gain sync again after
1541      *         an overflow condition. This is the best we can do. (Actually,
1542      *         we could use bit 0x08 in the header byte for resyncing, since
1543      *         that bit is supposed to be always on, but nobody told
1544      *         Microsoft...)
1545      */
1546 
1547     if (pBufP != 0 && rodent.rtype != MOUSE_PROTO_PS2 &&
1548 	((rBuf & cur_proto[2]) != cur_proto[3] || rBuf == 0x80))
1549     {
1550 	pBufP = 0;		/* skip package */
1551     }
1552 
1553     if (pBufP == 0 && (rBuf & cur_proto[0]) != cur_proto[1])
1554 	return 0;
1555 
1556     /* is there an extra data byte? */
1557     if (pBufP >= cur_proto[4] && (rBuf & cur_proto[0]) != cur_proto[1])
1558     {
1559 	/*
1560 	 * Hack for Logitech MouseMan Mouse - Middle button
1561 	 *
1562 	 * Unfortunately this mouse has variable length packets: the standard
1563 	 * Microsoft 3 byte packet plus an optional 4th byte whenever the
1564 	 * middle button status changes.
1565 	 *
1566 	 * We have already processed the standard packet with the movement
1567 	 * and button info.  Now post an event message with the old status
1568 	 * of the left and right buttons and the updated middle button.
1569 	 */
1570 
1571 	/*
1572 	 * Even worse, different MouseMen and TrackMen differ in the 4th
1573 	 * byte: some will send 0x00/0x20, others 0x01/0x21, or even
1574 	 * 0x02/0x22, so I have to strip off the lower bits.
1575          *
1576          * [JCH-96/01/21]
1577          * HACK for ALPS "fourth button". (It's bit 0x10 of the "fourth byte"
1578          * and it is activated by tapping the glidepad with the finger! 8^)
1579          * We map it to bit bit3, and the reverse map in xf86Events just has
1580          * to be extended so that it is identified as Button 4. The lower
1581          * half of the reverse-map may remain unchanged.
1582 	 */
1583 
1584         /*
1585 	 * [KY-97/08/03]
1586 	 * Receive the fourth byte only when preceding three bytes have
1587 	 * been detected (pBufP >= cur_proto[4]).  In the previous
1588 	 * versions, the test was pBufP == 0; thus, we may have mistakingly
1589 	 * received a byte even if we didn't see anything preceding
1590 	 * the byte.
1591 	 */
1592 
1593 	if ((rBuf & cur_proto[5]) != cur_proto[6]) {
1594             pBufP = 0;
1595 	    return 0;
1596 	}
1597 
1598 	switch (rodent.rtype) {
1599 #if notyet
1600 	case MOUSE_PROTO_MARIQUA:
1601 	    /*
1602 	     * This mouse has 16! buttons in addition to the standard
1603 	     * three of them.  They return 0x10 though 0x1f in the
1604 	     * so-called `ten key' mode and 0x30 though 0x3f in the
1605 	     * `function key' mode.  As there are only 31 bits for
1606 	     * button state (including the standard three), we ignore
1607 	     * the bit 0x20 and don't distinguish the two modes.
1608 	     */
1609 	    act->dx = act->dy = act->dz = 0;
1610 	    act->obutton = act->button;
1611 	    rBuf &= 0x1f;
1612 	    act->button = (1 << (rBuf - 13))
1613                 | (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
1614 	    /*
1615 	     * FIXME: this is a button "down" event. There needs to be
1616 	     * a corresponding button "up" event... XXX
1617 	     */
1618 	    break;
1619 #endif /* notyet */
1620 
1621 	/*
1622 	 * IntelliMouse, NetMouse (including NetMouse Pro) and Mie Mouse
1623 	 * always send the fourth byte, whereas the fourth byte is
1624 	 * optional for GlidePoint and ThinkingMouse. The fourth byte
1625 	 * is also optional for MouseMan+ and FirstMouse+ in their
1626 	 * native mode. It is always sent if they are in the IntelliMouse
1627 	 * compatible mode.
1628 	 */
1629 	case MOUSE_PROTO_INTELLI:	/* IntelliMouse, NetMouse, Mie Mouse,
1630 					   MouseMan+ */
1631 	    act->dx = act->dy = 0;
1632 	    act->dz = (rBuf & 0x08) ? (rBuf & 0x0f) - 16 : (rBuf & 0x0f);
1633 	    if ((act->dz >= 7) || (act->dz <= -7))
1634 		act->dz = 0;
1635 	    act->obutton = act->button;
1636 	    act->button = butmapintelli[(rBuf & MOUSE_MSS_BUTTONS) >> 4]
1637 		| (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
1638 	    break;
1639 
1640 	default:
1641 	    act->dx = act->dy = act->dz = 0;
1642 	    act->obutton = act->button;
1643 	    act->button = butmapmss2[(rBuf & MOUSE_MSS_BUTTONS) >> 4]
1644 		| (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
1645 	    break;
1646 	}
1647 
1648 	act->flags = ((act->dx || act->dy || act->dz) ? MOUSE_POSCHANGED : 0)
1649 	    | (act->obutton ^ act->button);
1650         pBufP = 0;
1651 	return act->flags;
1652     }
1653 
1654     if (pBufP >= cur_proto[4])
1655 	pBufP = 0;
1656     pBuf[pBufP++] = rBuf;
1657     if (pBufP != cur_proto[4])
1658 	return 0;
1659 
1660     /*
1661      * assembly full package
1662      */
1663 
1664     debug("assembled full packet (len %d) %x,%x,%x,%x,%x,%x,%x,%x",
1665 	cur_proto[4],
1666 	pBuf[0], pBuf[1], pBuf[2], pBuf[3],
1667 	pBuf[4], pBuf[5], pBuf[6], pBuf[7]);
1668 
1669     act->dz = 0;
1670     act->obutton = act->button;
1671     switch (rodent.rtype)
1672     {
1673     case MOUSE_PROTO_MS:		/* Microsoft */
1674     case MOUSE_PROTO_LOGIMOUSEMAN:	/* MouseMan/TrackMan */
1675     case MOUSE_PROTO_X10MOUSEREM:	/* X10 MouseRemote */
1676 	act->button = act->obutton & MOUSE_BUTTON4DOWN;
1677 	if (rodent.flags & ChordMiddle)
1678 	    act->button |= ((pBuf[0] & MOUSE_MSS_BUTTONS) == MOUSE_MSS_BUTTONS)
1679 		? MOUSE_BUTTON2DOWN
1680 		: butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
1681 	else
1682 	    act->button |= (act->obutton & MOUSE_BUTTON2DOWN)
1683 		| butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
1684 
1685 #if 0
1686 	/* Send X10 btn events to remote client (ensure -128-+127 range) */
1687 	if ((rodent.rtype == MOUSE_PROTO_X10MOUSEREM) &&
1688 	    ((pBuf[0] & 0xFC) == 0x44) && (pBuf[2] == 0x3F)) {
1689 	    if (rodent.mremcfd >= 0) {
1690 		unsigned char key = (signed char)(((pBuf[0] & 0x03) << 6) |
1691 						  (pBuf[1] & 0x3F));
1692 		write( rodent.mremcfd, &key, 1 );
1693 	    }
1694 	    return 0;
1695 	}
1696 #endif
1697 
1698 	act->dx = (char)(((pBuf[0] & 0x03) << 6) | (pBuf[1] & 0x3F));
1699 	act->dy = (char)(((pBuf[0] & 0x0C) << 4) | (pBuf[2] & 0x3F));
1700 	break;
1701 
1702     case MOUSE_PROTO_GLIDEPOINT:	/* GlidePoint */
1703     case MOUSE_PROTO_THINK:		/* ThinkingMouse */
1704     case MOUSE_PROTO_INTELLI:		/* IntelliMouse, NetMouse, Mie Mouse,
1705 					   MouseMan+ */
1706 	act->button = (act->obutton & (MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN))
1707             | butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
1708 	act->dx = (char)(((pBuf[0] & 0x03) << 6) | (pBuf[1] & 0x3F));
1709 	act->dy = (char)(((pBuf[0] & 0x0C) << 4) | (pBuf[2] & 0x3F));
1710 	break;
1711 
1712     case MOUSE_PROTO_MSC:		/* MouseSystems Corp */
1713 #if notyet
1714     case MOUSE_PROTO_MARIQUA:		/* Mariqua */
1715 #endif
1716 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_MSC_BUTTONS];
1717 	act->dx =    (char)(pBuf[1]) + (char)(pBuf[3]);
1718 	act->dy = - ((char)(pBuf[2]) + (char)(pBuf[4]));
1719 	break;
1720 
1721     case MOUSE_PROTO_HITTAB:		/* MM HitTablet */
1722 	act->button = butmaphit[pBuf[0] & 0x07];
1723 	act->dx = (pBuf[0] & MOUSE_MM_XPOSITIVE) ?   pBuf[1] : - pBuf[1];
1724 	act->dy = (pBuf[0] & MOUSE_MM_YPOSITIVE) ? - pBuf[2] :   pBuf[2];
1725 	break;
1726 
1727     case MOUSE_PROTO_MM:		/* MM Series */
1728     case MOUSE_PROTO_LOGI:		/* Logitech Mice */
1729 	act->button = butmapmsc[pBuf[0] & MOUSE_MSC_BUTTONS];
1730 	act->dx = (pBuf[0] & MOUSE_MM_XPOSITIVE) ?   pBuf[1] : - pBuf[1];
1731 	act->dy = (pBuf[0] & MOUSE_MM_YPOSITIVE) ? - pBuf[2] :   pBuf[2];
1732 	break;
1733 
1734     case MOUSE_PROTO_VERSAPAD:		/* VersaPad */
1735 	act->button = butmapversa[(pBuf[0] & MOUSE_VERSA_BUTTONS) >> 3];
1736 	act->button |= (pBuf[0] & MOUSE_VERSA_TAP) ? MOUSE_BUTTON4DOWN : 0;
1737 	act->dx = act->dy = 0;
1738 	if (!(pBuf[0] & MOUSE_VERSA_IN_USE)) {
1739 	    on = FALSE;
1740 	    break;
1741 	}
1742 	x = (pBuf[2] << 6) | pBuf[1];
1743 	if (x & 0x800)
1744 	    x -= 0x1000;
1745 	y = (pBuf[4] << 6) | pBuf[3];
1746 	if (y & 0x800)
1747 	    y -= 0x1000;
1748 	if (on) {
1749 	    act->dx = prev_x - x;
1750 	    act->dy = prev_y - y;
1751 	} else {
1752 	    on = TRUE;
1753 	}
1754 	prev_x = x;
1755 	prev_y = y;
1756 	break;
1757 
1758     case MOUSE_PROTO_BUS:		/* Bus */
1759     case MOUSE_PROTO_INPORT:		/* InPort */
1760 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_MSC_BUTTONS];
1761 	act->dx =   (char)pBuf[1];
1762 	act->dy = - (char)pBuf[2];
1763 	break;
1764 
1765     case MOUSE_PROTO_PS2:		/* PS/2 */
1766 	act->button = butmapps2[pBuf[0] & MOUSE_PS2_BUTTONS];
1767 	act->dx = (pBuf[0] & MOUSE_PS2_XNEG) ?    pBuf[1] - 256  :  pBuf[1];
1768 	act->dy = (pBuf[0] & MOUSE_PS2_YNEG) ?  -(pBuf[2] - 256) : -pBuf[2];
1769 	/*
1770 	 * Moused usually operates the psm driver at the operation level 1
1771 	 * which sends mouse data in MOUSE_PROTO_SYSMOUSE protocol.
1772 	 * The following code takes effect only when the user explicitly
1773 	 * requets the level 2 at which wheel movement and additional button
1774 	 * actions are encoded in model-dependent formats. At the level 0
1775 	 * the following code is no-op because the psm driver says the model
1776 	 * is MOUSE_MODEL_GENERIC.
1777 	 */
1778 	switch (rodent.hw.model) {
1779 	case MOUSE_MODEL_EXPLORER:
1780 	    /* wheel and additional button data is in the fourth byte */
1781 	    act->dz = (pBuf[3] & MOUSE_EXPLORER_ZNEG)
1782 		? (pBuf[3] & 0x0f) - 16 : (pBuf[3] & 0x0f);
1783 	    act->button |= (pBuf[3] & MOUSE_EXPLORER_BUTTON4DOWN)
1784 		? MOUSE_BUTTON4DOWN : 0;
1785 	    act->button |= (pBuf[3] & MOUSE_EXPLORER_BUTTON5DOWN)
1786 		? MOUSE_BUTTON5DOWN : 0;
1787 	    break;
1788 	case MOUSE_MODEL_INTELLI:
1789 	case MOUSE_MODEL_NET:
1790 	    /* wheel data is in the fourth byte */
1791 	    act->dz = (char)pBuf[3];
1792 	    if ((act->dz >= 7) || (act->dz <= -7))
1793 		act->dz = 0;
1794 	    /* some compatible mice may have additional buttons */
1795 	    act->button |= (pBuf[0] & MOUSE_PS2INTELLI_BUTTON4DOWN)
1796 		? MOUSE_BUTTON4DOWN : 0;
1797 	    act->button |= (pBuf[0] & MOUSE_PS2INTELLI_BUTTON5DOWN)
1798 		? MOUSE_BUTTON5DOWN : 0;
1799 	    break;
1800 	case MOUSE_MODEL_MOUSEMANPLUS:
1801 	    if (((pBuf[0] & MOUSE_PS2PLUS_SYNCMASK) == MOUSE_PS2PLUS_SYNC)
1802 		    && (abs(act->dx) > 191)
1803 		    && MOUSE_PS2PLUS_CHECKBITS(pBuf)) {
1804 		/* the extended data packet encodes button and wheel events */
1805 		switch (MOUSE_PS2PLUS_PACKET_TYPE(pBuf)) {
1806 		case 1:
1807 		    /* wheel data packet */
1808 		    act->dx = act->dy = 0;
1809 		    if (pBuf[2] & 0x80) {
1810 			/* horizontal roller count - ignore it XXX*/
1811 		    } else {
1812 			/* vertical roller count */
1813 			act->dz = (pBuf[2] & MOUSE_PS2PLUS_ZNEG)
1814 			    ? (pBuf[2] & 0x0f) - 16 : (pBuf[2] & 0x0f);
1815 		    }
1816 		    act->button |= (pBuf[2] & MOUSE_PS2PLUS_BUTTON4DOWN)
1817 			? MOUSE_BUTTON4DOWN : 0;
1818 		    act->button |= (pBuf[2] & MOUSE_PS2PLUS_BUTTON5DOWN)
1819 			? MOUSE_BUTTON5DOWN : 0;
1820 		    break;
1821 		case 2:
1822 		    /* this packet type is reserved by Logitech */
1823 		    /*
1824 		     * IBM ScrollPoint Mouse uses this packet type to
1825 		     * encode both vertical and horizontal scroll movement.
1826 		     */
1827 		    act->dx = act->dy = 0;
1828 		    /* horizontal roller count */
1829 		    if (pBuf[2] & 0x0f)
1830 			act->dz = (pBuf[2] & MOUSE_SPOINT_WNEG) ? -2 : 2;
1831 		    /* vertical roller count */
1832 		    if (pBuf[2] & 0xf0)
1833 			act->dz = (pBuf[2] & MOUSE_SPOINT_ZNEG) ? -1 : 1;
1834 #if 0
1835 		    /* vertical roller count */
1836 		    act->dz = (pBuf[2] & MOUSE_SPOINT_ZNEG)
1837 			? ((pBuf[2] >> 4) & 0x0f) - 16
1838 			: ((pBuf[2] >> 4) & 0x0f);
1839 		    /* horizontal roller count */
1840 		    act->dw = (pBuf[2] & MOUSE_SPOINT_WNEG)
1841 			? (pBuf[2] & 0x0f) - 16 : (pBuf[2] & 0x0f);
1842 #endif
1843 		    break;
1844 		case 0:
1845 		    /* device type packet - shouldn't happen */
1846 		    /* FALL THROUGH */
1847 		default:
1848 		    act->dx = act->dy = 0;
1849 		    act->button = act->obutton;
1850             	    debug("unknown PS2++ packet type %d: 0x%02x 0x%02x 0x%02x\n",
1851 			  MOUSE_PS2PLUS_PACKET_TYPE(pBuf),
1852 			  pBuf[0], pBuf[1], pBuf[2]);
1853 		    break;
1854 		}
1855 	    } else {
1856 		/* preserve button states */
1857 		act->button |= act->obutton & MOUSE_EXTBUTTONS;
1858 	    }
1859 	    break;
1860 	case MOUSE_MODEL_GLIDEPOINT:
1861 	    /* `tapping' action */
1862 	    act->button |= ((pBuf[0] & MOUSE_PS2_TAP)) ? 0 : MOUSE_BUTTON4DOWN;
1863 	    break;
1864 	case MOUSE_MODEL_NETSCROLL:
1865 	    /* three addtional bytes encode buttons and wheel events */
1866 	    act->button |= (pBuf[3] & MOUSE_PS2_BUTTON3DOWN)
1867 		? MOUSE_BUTTON4DOWN : 0;
1868 	    act->button |= (pBuf[3] & MOUSE_PS2_BUTTON1DOWN)
1869 		? MOUSE_BUTTON5DOWN : 0;
1870 	    act->dz = (pBuf[3] & MOUSE_PS2_XNEG) ? pBuf[4] - 256 : pBuf[4];
1871 	    break;
1872 	case MOUSE_MODEL_THINK:
1873 	    /* the fourth button state in the first byte */
1874 	    act->button |= (pBuf[0] & MOUSE_PS2_TAP) ? MOUSE_BUTTON4DOWN : 0;
1875 	    break;
1876 	case MOUSE_MODEL_VERSAPAD:
1877 	    act->button = butmapversaps2[pBuf[0] & MOUSE_PS2VERSA_BUTTONS];
1878 	    act->button |=
1879 		(pBuf[0] & MOUSE_PS2VERSA_TAP) ? MOUSE_BUTTON4DOWN : 0;
1880 	    act->dx = act->dy = 0;
1881 	    if (!(pBuf[0] & MOUSE_PS2VERSA_IN_USE)) {
1882 		on = FALSE;
1883 		break;
1884 	    }
1885 	    x = ((pBuf[4] << 8) & 0xf00) | pBuf[1];
1886 	    if (x & 0x800)
1887 		x -= 0x1000;
1888 	    y = ((pBuf[4] << 4) & 0xf00) | pBuf[2];
1889 	    if (y & 0x800)
1890 		y -= 0x1000;
1891 	    if (on) {
1892 		act->dx = prev_x - x;
1893 		act->dy = prev_y - y;
1894 	    } else {
1895 		on = TRUE;
1896 	    }
1897 	    prev_x = x;
1898 	    prev_y = y;
1899 	    break;
1900 	case MOUSE_MODEL_4D:
1901 	    act->dx = (pBuf[1] & 0x80) ?    pBuf[1] - 256  :  pBuf[1];
1902 	    act->dy = (pBuf[2] & 0x80) ?  -(pBuf[2] - 256) : -pBuf[2];
1903 	    switch (pBuf[0] & MOUSE_4D_WHEELBITS) {
1904 	    case 0x10:
1905 		act->dz = 1;
1906 		break;
1907 	    case 0x30:
1908 		act->dz = -1;
1909 		break;
1910 	    case 0x40:	/* 2nd wheel rolling right XXX */
1911 		act->dz = 2;
1912 		break;
1913 	    case 0xc0:	/* 2nd wheel rolling left XXX */
1914 		act->dz = -2;
1915 		break;
1916 	    }
1917 	    break;
1918 	case MOUSE_MODEL_4DPLUS:
1919 	    if ((act->dx < 16 - 256) && (act->dy > 256 - 16)) {
1920 		act->dx = act->dy = 0;
1921 		if (pBuf[2] & MOUSE_4DPLUS_BUTTON4DOWN)
1922 		    act->button |= MOUSE_BUTTON4DOWN;
1923 		act->dz = (pBuf[2] & MOUSE_4DPLUS_ZNEG)
1924 			      ? ((pBuf[2] & 0x07) - 8) : (pBuf[2] & 0x07);
1925 	    } else {
1926 		/* preserve previous button states */
1927 		act->button |= act->obutton & MOUSE_EXTBUTTONS;
1928 	    }
1929 	    break;
1930 	case MOUSE_MODEL_GENERIC:
1931 	default:
1932 	    break;
1933 	}
1934 	break;
1935 
1936     case MOUSE_PROTO_SYSMOUSE:		/* sysmouse */
1937 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_SYS_STDBUTTONS];
1938 	act->dx =    (char)(pBuf[1]) + (char)(pBuf[3]);
1939 	act->dy = - ((char)(pBuf[2]) + (char)(pBuf[4]));
1940 	if (rodent.level == 1) {
1941 	    act->dz = ((char)(pBuf[5] << 1) + (char)(pBuf[6] << 1))/2;
1942 	    act->button |= ((~pBuf[7] & MOUSE_SYS_EXTBUTTONS) << 3);
1943 	}
1944 	break;
1945 
1946     default:
1947 	return 0;
1948     }
1949     /*
1950      * We don't reset pBufP here yet, as there may be an additional data
1951      * byte in some protocols. See above.
1952      */
1953 
1954     /* has something changed? */
1955     act->flags = ((act->dx || act->dy || act->dz) ? MOUSE_POSCHANGED : 0)
1956 	| (act->obutton ^ act->button);
1957 
1958     return act->flags;
1959 }
1960 
1961 static int
1962 r_statetrans(mousestatus_t *a1, mousestatus_t *a2, int trans)
1963 {
1964     int changed;
1965     int flags;
1966 
1967     a2->dx = a1->dx;
1968     a2->dy = a1->dy;
1969     a2->dz = a1->dz;
1970     a2->obutton = a2->button;
1971     a2->button = a1->button;
1972     a2->flags = a1->flags;
1973     changed = FALSE;
1974 
1975     if (rodent.flags & Emulate3Button) {
1976 	if (dbg > 2)
1977 	    debug("state:%d, trans:%d -> state:%d",
1978 		  mouse_button_state, trans,
1979 		  states[mouse_button_state].s[trans]);
1980 	/*
1981 	 * Avoid re-ordering button and movement events. While a button
1982 	 * event is deferred, throw away up to BUTTON2_MAXMOVE movement
1983 	 * events to allow for mouse jitter. If more movement events
1984 	 * occur, then complete the deferred button events immediately.
1985 	 */
1986 	if ((a2->dx != 0 || a2->dy != 0) &&
1987 	    S_DELAYED(states[mouse_button_state].s[trans])) {
1988 		if (++mouse_move_delayed > BUTTON2_MAXMOVE) {
1989 			mouse_move_delayed = 0;
1990 			mouse_button_state =
1991 			    states[mouse_button_state].s[A_TIMEOUT];
1992 			changed = TRUE;
1993 		} else
1994 			a2->dx = a2->dy = 0;
1995 	} else
1996 		mouse_move_delayed = 0;
1997 	if (mouse_button_state != states[mouse_button_state].s[trans])
1998 		changed = TRUE;
1999 	if (changed)
2000 		gettimeofday(&mouse_button_state_tv, NULL);
2001 	mouse_button_state = states[mouse_button_state].s[trans];
2002 	a2->button &=
2003 	    ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN);
2004 	a2->button &= states[mouse_button_state].mask;
2005 	a2->button |= states[mouse_button_state].buttons;
2006 	flags = a2->flags & MOUSE_POSCHANGED;
2007 	flags |= a2->obutton ^ a2->button;
2008 	if (flags & MOUSE_BUTTON2DOWN) {
2009 	    a2->flags = flags & MOUSE_BUTTON2DOWN;
2010 	    r_timestamp(a2);
2011 	}
2012 	a2->flags = flags;
2013     }
2014     return changed;
2015 }
2016 
2017 /* phisical to logical button mapping */
2018 static int p2l[MOUSE_MAXBUTTON] = {
2019     MOUSE_BUTTON1DOWN, MOUSE_BUTTON2DOWN, MOUSE_BUTTON3DOWN, MOUSE_BUTTON4DOWN,
2020     MOUSE_BUTTON5DOWN, MOUSE_BUTTON6DOWN, MOUSE_BUTTON7DOWN, MOUSE_BUTTON8DOWN,
2021     0x00000100,        0x00000200,        0x00000400,        0x00000800,
2022     0x00001000,        0x00002000,        0x00004000,        0x00008000,
2023     0x00010000,        0x00020000,        0x00040000,        0x00080000,
2024     0x00100000,        0x00200000,        0x00400000,        0x00800000,
2025     0x01000000,        0x02000000,        0x04000000,        0x08000000,
2026     0x10000000,        0x20000000,        0x40000000,
2027 };
2028 
2029 static char *
2030 skipspace(char *s)
2031 {
2032     while(isspace(*s))
2033 	++s;
2034     return s;
2035 }
2036 
2037 static int
2038 r_installmap(char *arg)
2039 {
2040     int pbutton;
2041     int lbutton;
2042     char *s;
2043 
2044     while (*arg) {
2045 	arg = skipspace(arg);
2046 	s = arg;
2047 	while (isdigit(*arg))
2048 	    ++arg;
2049 	arg = skipspace(arg);
2050 	if ((arg <= s) || (*arg != '='))
2051 	    return FALSE;
2052 	lbutton = atoi(s);
2053 
2054 	arg = skipspace(++arg);
2055 	s = arg;
2056 	while (isdigit(*arg))
2057 	    ++arg;
2058 	if ((arg <= s) || (!isspace(*arg) && (*arg != '\0')))
2059 	    return FALSE;
2060 	pbutton = atoi(s);
2061 
2062 	if ((lbutton <= 0) || (lbutton > MOUSE_MAXBUTTON))
2063 	    return FALSE;
2064 	if ((pbutton <= 0) || (pbutton > MOUSE_MAXBUTTON))
2065 	    return FALSE;
2066 	p2l[pbutton - 1] = 1 << (lbutton - 1);
2067 	mstate[lbutton - 1] = &bstate[pbutton - 1];
2068     }
2069 
2070     return TRUE;
2071 }
2072 
2073 static void
2074 r_map(mousestatus_t *act1, mousestatus_t *act2)
2075 {
2076     register int pb;
2077     register int pbuttons;
2078     int lbuttons;
2079 
2080     pbuttons = act1->button;
2081     lbuttons = 0;
2082 
2083     act2->obutton = act2->button;
2084     if (pbuttons & rodent.wmode) {
2085 	pbuttons &= ~rodent.wmode;
2086 	act1->dz = act1->dy;
2087 	act1->dx = 0;
2088 	act1->dy = 0;
2089     }
2090     act2->dx = act1->dx;
2091     act2->dy = act1->dy;
2092     act2->dz = act1->dz;
2093 
2094     switch (rodent.zmap[0]) {
2095     case 0:	/* do nothing */
2096 	break;
2097     case MOUSE_XAXIS:
2098 	if (act1->dz != 0) {
2099 	    act2->dx = act1->dz;
2100 	    act2->dz = 0;
2101 	}
2102 	break;
2103     case MOUSE_YAXIS:
2104 	if (act1->dz != 0) {
2105 	    act2->dy = act1->dz;
2106 	    act2->dz = 0;
2107 	}
2108 	break;
2109     default:	/* buttons */
2110 	pbuttons &= ~(rodent.zmap[0] | rodent.zmap[1]
2111 		    | rodent.zmap[2] | rodent.zmap[3]);
2112 	if ((act1->dz < -1) && rodent.zmap[2]) {
2113 	    pbuttons |= rodent.zmap[2];
2114 	    zstate[2].count = 1;
2115 	} else if (act1->dz < 0) {
2116 	    pbuttons |= rodent.zmap[0];
2117 	    zstate[0].count = 1;
2118 	} else if ((act1->dz > 1) && rodent.zmap[3]) {
2119 	    pbuttons |= rodent.zmap[3];
2120 	    zstate[3].count = 1;
2121 	} else if (act1->dz > 0) {
2122 	    pbuttons |= rodent.zmap[1];
2123 	    zstate[1].count = 1;
2124 	}
2125 	act2->dz = 0;
2126 	break;
2127     }
2128 
2129     for (pb = 0; (pb < MOUSE_MAXBUTTON) && (pbuttons != 0); ++pb) {
2130 	lbuttons |= (pbuttons & 1) ? p2l[pb] : 0;
2131 	pbuttons >>= 1;
2132     }
2133     act2->button = lbuttons;
2134 
2135     act2->flags = ((act2->dx || act2->dy || act2->dz) ? MOUSE_POSCHANGED : 0)
2136 	| (act2->obutton ^ act2->button);
2137 }
2138 
2139 static void
2140 r_timestamp(mousestatus_t *act)
2141 {
2142     struct timeval tv;
2143     struct timeval tv1;
2144     struct timeval tv2;
2145     struct timeval tv3;
2146     int button;
2147     int mask;
2148     int i;
2149 
2150     mask = act->flags & MOUSE_BUTTONS;
2151 #if 0
2152     if (mask == 0)
2153 	return;
2154 #endif
2155 
2156     gettimeofday(&tv1, NULL);
2157 
2158     /* double click threshold */
2159     tv2.tv_sec = rodent.clickthreshold/1000;
2160     tv2.tv_usec = (rodent.clickthreshold%1000)*1000;
2161     timersub(&tv1, &tv2, &tv);
2162     debug("tv:  %ld %ld", tv.tv_sec, tv.tv_usec);
2163 
2164     /* 3 button emulation timeout */
2165     tv2.tv_sec = rodent.button2timeout/1000;
2166     tv2.tv_usec = (rodent.button2timeout%1000)*1000;
2167     timersub(&tv1, &tv2, &tv3);
2168 
2169     button = MOUSE_BUTTON1DOWN;
2170     for (i = 0; (i < MOUSE_MAXBUTTON) && (mask != 0); ++i) {
2171         if (mask & 1) {
2172             if (act->button & button) {
2173                 /* the button is down */
2174     		debug("  :  %ld %ld",
2175 		    bstate[i].tv.tv_sec, bstate[i].tv.tv_usec);
2176 		if (timercmp(&tv, &bstate[i].tv, >)) {
2177                     bstate[i].count = 1;
2178                 } else {
2179                     ++bstate[i].count;
2180                 }
2181 		bstate[i].tv = tv1;
2182             } else {
2183                 /* the button is up */
2184                 bstate[i].tv = tv1;
2185             }
2186         } else {
2187 	    if (act->button & button) {
2188 		/* the button has been down */
2189 		if (timercmp(&tv3, &bstate[i].tv, >)) {
2190 		    bstate[i].count = 1;
2191 		    bstate[i].tv = tv1;
2192 		    act->flags |= button;
2193 		    debug("button %d timeout", i + 1);
2194 		}
2195 	    } else {
2196 		/* the button has been up */
2197 	    }
2198 	}
2199 	button <<= 1;
2200 	mask >>= 1;
2201     }
2202 }
2203 
2204 static int
2205 r_timeout(void)
2206 {
2207     struct timeval tv;
2208     struct timeval tv1;
2209     struct timeval tv2;
2210 
2211     if (states[mouse_button_state].timeout)
2212 	return TRUE;
2213     gettimeofday(&tv1, NULL);
2214     tv2.tv_sec = rodent.button2timeout/1000;
2215     tv2.tv_usec = (rodent.button2timeout%1000)*1000;
2216     timersub(&tv1, &tv2, &tv);
2217     return timercmp(&tv, &mouse_button_state_tv, >);
2218 }
2219 
2220 /* $XConsortium: posix_tty.c,v 1.3 95/01/05 20:42:55 kaleb Exp $ */
2221 /* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/shared/posix_tty.c,v 3.4 1995/01/28 17:05:03 dawes Exp $ */
2222 /*
2223  * Copyright 1993 by David Dawes <dawes@physics.su.oz.au>
2224  *
2225  * Permission to use, copy, modify, distribute, and sell this software and its
2226  * documentation for any purpose is hereby granted without fee, provided that
2227  * the above copyright notice appear in all copies and that both that
2228  * copyright notice and this permission notice appear in supporting
2229  * documentation, and that the name of David Dawes
2230  * not be used in advertising or publicity pertaining to distribution of
2231  * the software without specific, written prior permission.
2232  * David Dawes makes no representations about the suitability of this
2233  * software for any purpose.  It is provided "as is" without express or
2234  * implied warranty.
2235  *
2236  * DAVID DAWES DISCLAIMS ALL WARRANTIES WITH REGARD TO
2237  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
2238  * FITNESS, IN NO EVENT SHALL DAVID DAWES BE LIABLE FOR
2239  * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
2240  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
2241  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
2242  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
2243  *
2244  */
2245 
2246 
2247 static void
2248 setmousespeed(int old, int new, unsigned cflag)
2249 {
2250 	struct termios tty;
2251 	char *c;
2252 
2253 	if (tcgetattr(rodent.mfd, &tty) < 0)
2254 	{
2255 		logwarn("unable to get status of mouse fd");
2256 		return;
2257 	}
2258 
2259 	tty.c_iflag = IGNBRK | IGNPAR;
2260 	tty.c_oflag = 0;
2261 	tty.c_lflag = 0;
2262 	tty.c_cflag = (tcflag_t)cflag;
2263 	tty.c_cc[VTIME] = 0;
2264 	tty.c_cc[VMIN] = 1;
2265 
2266 	switch (old)
2267 	{
2268 	case 9600:
2269 		cfsetispeed(&tty, B9600);
2270 		cfsetospeed(&tty, B9600);
2271 		break;
2272 	case 4800:
2273 		cfsetispeed(&tty, B4800);
2274 		cfsetospeed(&tty, B4800);
2275 		break;
2276 	case 2400:
2277 		cfsetispeed(&tty, B2400);
2278 		cfsetospeed(&tty, B2400);
2279 		break;
2280 	case 1200:
2281 	default:
2282 		cfsetispeed(&tty, B1200);
2283 		cfsetospeed(&tty, B1200);
2284 	}
2285 
2286 	if (tcsetattr(rodent.mfd, TCSADRAIN, &tty) < 0)
2287 	{
2288 		logwarn("unable to set status of mouse fd");
2289 		return;
2290 	}
2291 
2292 	switch (new)
2293 	{
2294 	case 9600:
2295 		c = "*q";
2296 		cfsetispeed(&tty, B9600);
2297 		cfsetospeed(&tty, B9600);
2298 		break;
2299 	case 4800:
2300 		c = "*p";
2301 		cfsetispeed(&tty, B4800);
2302 		cfsetospeed(&tty, B4800);
2303 		break;
2304 	case 2400:
2305 		c = "*o";
2306 		cfsetispeed(&tty, B2400);
2307 		cfsetospeed(&tty, B2400);
2308 		break;
2309 	case 1200:
2310 	default:
2311 		c = "*n";
2312 		cfsetispeed(&tty, B1200);
2313 		cfsetospeed(&tty, B1200);
2314 	}
2315 
2316 	if (rodent.rtype == MOUSE_PROTO_LOGIMOUSEMAN
2317 	    || rodent.rtype == MOUSE_PROTO_LOGI)
2318 	{
2319 		if (write(rodent.mfd, c, 2) != 2)
2320 		{
2321 			logwarn("unable to write to mouse fd");
2322 			return;
2323 		}
2324 	}
2325 	usleep(100000);
2326 
2327 	if (tcsetattr(rodent.mfd, TCSADRAIN, &tty) < 0)
2328 		logwarn("unable to set status of mouse fd");
2329 }
2330 
2331 /*
2332  * PnP COM device support
2333  *
2334  * It's a simplistic implementation, but it works :-)
2335  * KY, 31/7/97.
2336  */
2337 
2338 /*
2339  * Try to elicit a PnP ID as described in
2340  * Microsoft, Hayes: "Plug and Play External COM Device Specification,
2341  * rev 1.00", 1995.
2342  *
2343  * The routine does not fully implement the COM Enumerator as par Section
2344  * 2.1 of the document.  In particular, we don't have idle state in which
2345  * the driver software monitors the com port for dynamic connection or
2346  * removal of a device at the port, because `moused' simply quits if no
2347  * device is found.
2348  *
2349  * In addition, as PnP COM device enumeration procedure slightly has
2350  * changed since its first publication, devices which follow earlier
2351  * revisions of the above spec. may fail to respond if the rev 1.0
2352  * procedure is used. XXX
2353  */
2354 static int
2355 pnpwakeup1(void)
2356 {
2357     struct timeval timeout;
2358     fd_set fds;
2359     int i;
2360 
2361     /*
2362      * This is the procedure described in rev 1.0 of PnP COM device spec.
2363      * Unfortunately, some devices which comform to earlier revisions of
2364      * the spec gets confused and do not return the ID string...
2365      */
2366     debug("PnP COM device rev 1.0 probe...");
2367 
2368     /* port initialization (2.1.2) */
2369     ioctl(rodent.mfd, TIOCMGET, &i);
2370     i |= TIOCM_DTR;		/* DTR = 1 */
2371     i &= ~TIOCM_RTS;		/* RTS = 0 */
2372     ioctl(rodent.mfd, TIOCMSET, &i);
2373     usleep(240000);
2374 
2375     /*
2376      * The PnP COM device spec. dictates that the mouse must set DSR
2377      * in response to DTR (by hardware or by software) and that if DSR is
2378      * not asserted, the host computer should think that there is no device
2379      * at this serial port.  But some mice just don't do that...
2380      */
2381     ioctl(rodent.mfd, TIOCMGET, &i);
2382     debug("modem status 0%o", i);
2383     if ((i & TIOCM_DSR) == 0)
2384 	return FALSE;
2385 
2386     /* port setup, 1st phase (2.1.3) */
2387     setmousespeed(1200, 1200, (CS7 | CREAD | CLOCAL | HUPCL));
2388     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 0, RTS = 0 */
2389     ioctl(rodent.mfd, TIOCMBIC, &i);
2390     usleep(240000);
2391     i = TIOCM_DTR;		/* DTR = 1, RTS = 0 */
2392     ioctl(rodent.mfd, TIOCMBIS, &i);
2393     usleep(240000);
2394 
2395     /* wait for response, 1st phase (2.1.4) */
2396     i = FREAD;
2397     ioctl(rodent.mfd, TIOCFLUSH, &i);
2398     i = TIOCM_RTS;		/* DTR = 1, RTS = 1 */
2399     ioctl(rodent.mfd, TIOCMBIS, &i);
2400 
2401     /* try to read something */
2402     FD_ZERO(&fds);
2403     FD_SET(rodent.mfd, &fds);
2404     timeout.tv_sec = 0;
2405     timeout.tv_usec = 240000;
2406     if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) {
2407 	debug("pnpwakeup1(): valid response in first phase.");
2408 	return TRUE;
2409     }
2410 
2411     /* port setup, 2nd phase (2.1.5) */
2412     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 0, RTS = 0 */
2413     ioctl(rodent.mfd, TIOCMBIC, &i);
2414     usleep(240000);
2415 
2416     /* wait for respose, 2nd phase (2.1.6) */
2417     i = FREAD;
2418     ioctl(rodent.mfd, TIOCFLUSH, &i);
2419     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 1, RTS = 1 */
2420     ioctl(rodent.mfd, TIOCMBIS, &i);
2421 
2422     /* try to read something */
2423     FD_ZERO(&fds);
2424     FD_SET(rodent.mfd, &fds);
2425     timeout.tv_sec = 0;
2426     timeout.tv_usec = 240000;
2427     if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) {
2428 	debug("pnpwakeup1(): valid response in second phase.");
2429 	return TRUE;
2430     }
2431 
2432     return FALSE;
2433 }
2434 
2435 static int
2436 pnpwakeup2(void)
2437 {
2438     struct timeval timeout;
2439     fd_set fds;
2440     int i;
2441 
2442     /*
2443      * This is a simplified procedure; it simply toggles RTS.
2444      */
2445     debug("alternate probe...");
2446 
2447     ioctl(rodent.mfd, TIOCMGET, &i);
2448     i |= TIOCM_DTR;		/* DTR = 1 */
2449     i &= ~TIOCM_RTS;		/* RTS = 0 */
2450     ioctl(rodent.mfd, TIOCMSET, &i);
2451     usleep(240000);
2452 
2453     setmousespeed(1200, 1200, (CS7 | CREAD | CLOCAL | HUPCL));
2454 
2455     /* wait for respose */
2456     i = FREAD;
2457     ioctl(rodent.mfd, TIOCFLUSH, &i);
2458     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 1, RTS = 1 */
2459     ioctl(rodent.mfd, TIOCMBIS, &i);
2460 
2461     /* try to read something */
2462     FD_ZERO(&fds);
2463     FD_SET(rodent.mfd, &fds);
2464     timeout.tv_sec = 0;
2465     timeout.tv_usec = 240000;
2466     if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) {
2467 	debug("pnpwakeup2(): valid response.");
2468 	return TRUE;
2469     }
2470 
2471     return FALSE;
2472 }
2473 
2474 static int
2475 pnpgets(char *buf)
2476 {
2477     struct timeval timeout;
2478     fd_set fds;
2479     int begin;
2480     int i;
2481     char c;
2482 
2483     if (!pnpwakeup1() && !pnpwakeup2()) {
2484 	/*
2485 	 * According to PnP spec, we should set DTR = 1 and RTS = 0 while
2486 	 * in idle state.  But, `moused' shall set DTR = RTS = 1 and proceed,
2487 	 * assuming there is something at the port even if it didn't
2488 	 * respond to the PnP enumeration procedure.
2489 	 */
2490 	i = TIOCM_DTR | TIOCM_RTS;		/* DTR = 1, RTS = 1 */
2491 	ioctl(rodent.mfd, TIOCMBIS, &i);
2492 	return 0;
2493     }
2494 
2495     /* collect PnP COM device ID (2.1.7) */
2496     begin = -1;
2497     i = 0;
2498     usleep(240000);	/* the mouse must send `Begin ID' within 200msec */
2499     while (read(rodent.mfd, &c, 1) == 1) {
2500 	/* we may see "M", or "M3..." before `Begin ID' */
2501 	buf[i++] = c;
2502         if ((c == 0x08) || (c == 0x28)) {	/* Begin ID */
2503 	    debug("begin-id %02x", c);
2504 	    begin = i - 1;
2505 	    break;
2506         }
2507         debug("%c %02x", c, c);
2508 	if (i >= 256)
2509 	    break;
2510     }
2511     if (begin < 0) {
2512 	/* we haven't seen `Begin ID' in time... */
2513 	goto connect_idle;
2514     }
2515 
2516     ++c;			/* make it `End ID' */
2517     for (;;) {
2518         FD_ZERO(&fds);
2519         FD_SET(rodent.mfd, &fds);
2520         timeout.tv_sec = 0;
2521         timeout.tv_usec = 240000;
2522         if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) <= 0)
2523 	    break;
2524 
2525 	read(rodent.mfd, &buf[i], 1);
2526         if (buf[i++] == c)	/* End ID */
2527 	    break;
2528 	if (i >= 256)
2529 	    break;
2530     }
2531     if (begin > 0) {
2532 	i -= begin;
2533 	bcopy(&buf[begin], &buf[0], i);
2534     }
2535     /* string may not be human readable... */
2536     debug("len:%d, '%-*.*s'", i, i, i, buf);
2537 
2538     if (buf[i - 1] == c)
2539 	return i;		/* a valid PnP string */
2540 
2541     /*
2542      * According to PnP spec, we should set DTR = 1 and RTS = 0 while
2543      * in idle state.  But, `moused' shall leave the modem control lines
2544      * as they are. See above.
2545      */
2546 connect_idle:
2547 
2548     /* we may still have something in the buffer */
2549     return ((i > 0) ? i : 0);
2550 }
2551 
2552 static int
2553 pnpparse(pnpid_t *id, char *buf, int len)
2554 {
2555     char s[3];
2556     int offset;
2557     int sum = 0;
2558     int i, j;
2559 
2560     id->revision = 0;
2561     id->eisaid = NULL;
2562     id->serial = NULL;
2563     id->class = NULL;
2564     id->compat = NULL;
2565     id->description = NULL;
2566     id->neisaid = 0;
2567     id->nserial = 0;
2568     id->nclass = 0;
2569     id->ncompat = 0;
2570     id->ndescription = 0;
2571 
2572     if ((buf[0] != 0x28) && (buf[0] != 0x08)) {
2573 	/* non-PnP mice */
2574 	switch(buf[0]) {
2575 	default:
2576 	    return FALSE;
2577 	case 'M': /* Microsoft */
2578 	    id->eisaid = "PNP0F01";
2579 	    break;
2580 	case 'H': /* MouseSystems */
2581 	    id->eisaid = "PNP0F04";
2582 	    break;
2583 	}
2584 	id->neisaid = strlen(id->eisaid);
2585 	id->class = "MOUSE";
2586 	id->nclass = strlen(id->class);
2587 	debug("non-PnP mouse '%c'", buf[0]);
2588 	return TRUE;
2589     }
2590 
2591     /* PnP mice */
2592     offset = 0x28 - buf[0];
2593 
2594     /* calculate checksum */
2595     for (i = 0; i < len - 3; ++i) {
2596 	sum += buf[i];
2597 	buf[i] += offset;
2598     }
2599     sum += buf[len - 1];
2600     for (; i < len; ++i)
2601 	buf[i] += offset;
2602     debug("PnP ID string: '%*.*s'", len, len, buf);
2603 
2604     /* revision */
2605     buf[1] -= offset;
2606     buf[2] -= offset;
2607     id->revision = ((buf[1] & 0x3f) << 6) | (buf[2] & 0x3f);
2608     debug("PnP rev %d.%02d", id->revision / 100, id->revision % 100);
2609 
2610     /* EISA vender and product ID */
2611     id->eisaid = &buf[3];
2612     id->neisaid = 7;
2613 
2614     /* option strings */
2615     i = 10;
2616     if (buf[i] == '\\') {
2617         /* device serial # */
2618         for (j = ++i; i < len; ++i) {
2619             if (buf[i] == '\\')
2620 		break;
2621         }
2622 	if (i >= len)
2623 	    i -= 3;
2624 	if (i - j == 8) {
2625             id->serial = &buf[j];
2626             id->nserial = 8;
2627 	}
2628     }
2629     if (buf[i] == '\\') {
2630         /* PnP class */
2631         for (j = ++i; i < len; ++i) {
2632             if (buf[i] == '\\')
2633 		break;
2634         }
2635 	if (i >= len)
2636 	    i -= 3;
2637 	if (i > j + 1) {
2638             id->class = &buf[j];
2639             id->nclass = i - j;
2640         }
2641     }
2642     if (buf[i] == '\\') {
2643 	/* compatible driver */
2644         for (j = ++i; i < len; ++i) {
2645             if (buf[i] == '\\')
2646 		break;
2647         }
2648 	/*
2649 	 * PnP COM spec prior to v0.96 allowed '*' in this field,
2650 	 * it's not allowed now; just igore it.
2651 	 */
2652 	if (buf[j] == '*')
2653 	    ++j;
2654 	if (i >= len)
2655 	    i -= 3;
2656 	if (i > j + 1) {
2657             id->compat = &buf[j];
2658             id->ncompat = i - j;
2659         }
2660     }
2661     if (buf[i] == '\\') {
2662 	/* product description */
2663         for (j = ++i; i < len; ++i) {
2664             if (buf[i] == ';')
2665 		break;
2666         }
2667 	if (i >= len)
2668 	    i -= 3;
2669 	if (i > j + 1) {
2670             id->description = &buf[j];
2671             id->ndescription = i - j;
2672         }
2673     }
2674 
2675     /* checksum exists if there are any optional fields */
2676     if ((id->nserial > 0) || (id->nclass > 0)
2677 	|| (id->ncompat > 0) || (id->ndescription > 0)) {
2678         debug("PnP checksum: 0x%X", sum);
2679         sprintf(s, "%02X", sum & 0x0ff);
2680         if (strncmp(s, &buf[len - 3], 2) != 0) {
2681 #if 0
2682             /*
2683 	     * I found some mice do not comply with the PnP COM device
2684 	     * spec regarding checksum... XXX
2685 	     */
2686             logwarnx("PnP checksum error", 0);
2687 	    return FALSE;
2688 #endif
2689         }
2690     }
2691 
2692     return TRUE;
2693 }
2694 
2695 static symtab_t *
2696 pnpproto(pnpid_t *id)
2697 {
2698     symtab_t *t;
2699     int i, j;
2700 
2701     if (id->nclass > 0)
2702 	if ( strncmp(id->class, "MOUSE", id->nclass) != 0 &&
2703 	     strncmp(id->class, "TABLET", id->nclass) != 0)
2704 	    /* this is not a mouse! */
2705 	    return NULL;
2706 
2707     if (id->neisaid > 0) {
2708         t = gettoken(pnpprod, id->eisaid, id->neisaid);
2709 	if (t->val != MOUSE_PROTO_UNKNOWN)
2710             return t;
2711     }
2712 
2713     /*
2714      * The 'Compatible drivers' field may contain more than one
2715      * ID separated by ','.
2716      */
2717     if (id->ncompat <= 0)
2718 	return NULL;
2719     for (i = 0; i < id->ncompat; ++i) {
2720         for (j = i; id->compat[i] != ','; ++i)
2721             if (i >= id->ncompat)
2722 		break;
2723         if (i > j) {
2724             t = gettoken(pnpprod, id->compat + j, i - j);
2725 	    if (t->val != MOUSE_PROTO_UNKNOWN)
2726                 return t;
2727 	}
2728     }
2729 
2730     return NULL;
2731 }
2732 
2733 /* name/val mapping */
2734 
2735 static symtab_t *
2736 gettoken(symtab_t *tab, char *s, int len)
2737 {
2738     int i;
2739 
2740     for (i = 0; tab[i].name != NULL; ++i) {
2741 	if (strncmp(tab[i].name, s, len) == 0)
2742 	    break;
2743     }
2744     return &tab[i];
2745 }
2746 
2747 static char *
2748 gettokenname(symtab_t *tab, int val)
2749 {
2750     int i;
2751 
2752     for (i = 0; tab[i].name != NULL; ++i) {
2753 	if (tab[i].val == val)
2754 	    return tab[i].name;
2755     }
2756     return NULL;
2757 }
2758 
2759 
2760 /*
2761  * code to read from the Genius Kidspad tablet.
2762 
2763 The tablet responds to the COM PnP protocol 1.0 with EISA-ID KYE0005,
2764 and to pre-pnp probes (RTS toggle) with 'T' (tablet ?)
2765 9600, 8 bit, parity odd.
2766 
2767 The tablet puts out 5 bytes. b0 (mask 0xb8, value 0xb8) contains
2768 the proximity, tip and button info:
2769    (byte0 & 0x1)	true = tip pressed
2770    (byte0 & 0x2)	true = button pressed
2771    (byte0 & 0x40)	false = pen in proximity of tablet.
2772 
2773 The next 4 bytes are used for coordinates xl, xh, yl, yh (7 bits valid).
2774 
2775 Only absolute coordinates are returned, so we use the following approach:
2776 we store the last coordinates sent when the pen went out of the tablet,
2777 
2778 
2779  *
2780  */
2781 
2782 typedef enum {
2783     S_IDLE, S_PROXY, S_FIRST, S_DOWN, S_UP
2784 } k_status ;
2785 
2786 static int
2787 kidspad(u_char rxc, mousestatus_t *act)
2788 {
2789     static int buf[5];
2790     static int buflen = 0, b_prev = 0 , x_prev = -1, y_prev = -1 ;
2791     static k_status status = S_IDLE ;
2792     static struct timeval old, now ;
2793 
2794     int x, y ;
2795 
2796     if (buflen > 0 && (rxc & 0x80) ) {
2797 	fprintf(stderr, "invalid code %d 0x%x\n", buflen, rxc);
2798 	buflen = 0 ;
2799     }
2800     if (buflen == 0 && (rxc & 0xb8) != 0xb8 ) {
2801 	fprintf(stderr, "invalid code 0 0x%x\n", rxc);
2802 	return 0 ; /* invalid code, no action */
2803     }
2804     buf[buflen++] = rxc ;
2805     if (buflen < 5)
2806 	return 0 ;
2807 
2808     buflen = 0 ; /* for next time... */
2809 
2810     x = buf[1]+128*(buf[2] - 7) ;
2811     if (x < 0) x = 0 ;
2812     y = 28*128 - (buf[3] + 128* (buf[4] - 7)) ;
2813     if (y < 0) y = 0 ;
2814 
2815     x /= 8 ;
2816     y /= 8 ;
2817 
2818     act->flags = 0 ;
2819     act->obutton = act->button ;
2820     act->dx = act->dy = act->dz = 0 ;
2821     gettimeofday(&now, NULL);
2822     if ( buf[0] & 0x40 ) /* pen went out of reach */
2823 	status = S_IDLE ;
2824     else if (status == S_IDLE) { /* pen is newly near the tablet */
2825 	act->flags |= MOUSE_POSCHANGED ; /* force update */
2826 	status = S_PROXY ;
2827 	x_prev = x ;
2828 	y_prev = y ;
2829     }
2830     old = now ;
2831     act->dx = x - x_prev ;
2832     act->dy = y - y_prev ;
2833     if (act->dx || act->dy)
2834 	act->flags |= MOUSE_POSCHANGED ;
2835     x_prev = x ;
2836     y_prev = y ;
2837     if (b_prev != 0 && b_prev != buf[0]) { /* possibly record button change */
2838 	act->button = 0 ;
2839 	if ( buf[0] & 0x01 ) /* tip pressed */
2840 	    act->button |= MOUSE_BUTTON1DOWN ;
2841 	if ( buf[0] & 0x02 ) /* button pressed */
2842 	    act->button |= MOUSE_BUTTON2DOWN ;
2843 	act->flags |= MOUSE_BUTTONSCHANGED ;
2844     }
2845     b_prev = buf[0] ;
2846     return act->flags ;
2847 }
2848