xref: /freebsd/usr.sbin/moused/moused.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
1 /**
2  ** Copyright (c) 1995 Michael Smith, All rights reserved.
3  **
4  ** Redistribution and use in source and binary forms, with or without
5  ** modification, are permitted provided that the following conditions
6  ** are met:
7  ** 1. Redistributions of source code must retain the above copyright
8  **    notice, this list of conditions and the following disclaimer as
9  **    the first lines of this file unmodified.
10  ** 2. Redistributions in binary form must reproduce the above copyright
11  **    notice, this list of conditions and the following disclaimer in the
12  **    documentation and/or other materials provided with the distribution.
13  ** 3. All advertising materials mentioning features or use of this software
14  **    must display the following acknowledgment:
15  **      This product includes software developed by Michael Smith.
16  ** 4. The name of the author may not be used to endorse or promote products
17  **    derived from this software without specific prior written permission.
18  **
19  **
20  ** THIS SOFTWARE IS PROVIDED BY Michael Smith ``AS IS'' AND ANY
21  ** EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23  ** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Michael Smith BE LIABLE FOR
24  ** ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  ** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  ** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
27  ** BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28  ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
29  ** OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30  ** EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  **
32  **/
33 
34 /**
35  ** MOUSED.C
36  **
37  ** Mouse daemon : listens to a serial port, the bus mouse interface, or
38  ** the PS/2 mouse port for mouse data stream, interprets data and passes
39  ** ioctls off to the console driver.
40  **
41  ** The mouse interface functions are derived closely from the mouse
42  ** handler in the XFree86 X server.  Many thanks to the XFree86 people
43  ** for their great work!
44  **
45  **/
46 
47 #include <sys/cdefs.h>
48 __FBSDID("$FreeBSD$");
49 
50 #include <sys/param.h>
51 #include <sys/consio.h>
52 #include <sys/mouse.h>
53 #include <sys/socket.h>
54 #include <sys/stat.h>
55 #include <sys/time.h>
56 #include <sys/un.h>
57 
58 #include <ctype.h>
59 #include <err.h>
60 #include <errno.h>
61 #include <fcntl.h>
62 #include <libutil.h>
63 #include <limits.h>
64 #include <setjmp.h>
65 #include <signal.h>
66 #include <stdarg.h>
67 #include <stdio.h>
68 #include <stdlib.h>
69 #include <string.h>
70 #include <syslog.h>
71 #include <termios.h>
72 #include <unistd.h>
73 #include <math.h>
74 
75 #define MAX_CLICKTHRESHOLD	2000	/* 2 seconds */
76 #define MAX_BUTTON2TIMEOUT	2000	/* 2 seconds */
77 #define DFLT_CLICKTHRESHOLD	 500	/* 0.5 second */
78 #define DFLT_BUTTON2TIMEOUT	 100	/* 0.1 second */
79 #define DFLT_SCROLLTHRESHOLD	   3	/* 3 pixels */
80 
81 /* Abort 3-button emulation delay after this many movement events. */
82 #define BUTTON2_MAXMOVE	3
83 
84 #define TRUE		1
85 #define FALSE		0
86 
87 #define MOUSE_XAXIS	(-1)
88 #define MOUSE_YAXIS	(-2)
89 
90 /* Logitech PS2++ protocol */
91 #define MOUSE_PS2PLUS_CHECKBITS(b)	\
92 			((((b[2] & 0x03) << 2) | 0x02) == (b[1] & 0x0f))
93 #define MOUSE_PS2PLUS_PACKET_TYPE(b)	\
94 			(((b[0] & 0x30) >> 2) | ((b[1] & 0x30) >> 4))
95 
96 #define	ChordMiddle	0x0001
97 #define Emulate3Button	0x0002
98 #define ClearDTR	0x0004
99 #define ClearRTS	0x0008
100 #define NoPnP		0x0010
101 #define VirtualScroll	0x0020
102 #define HVirtualScroll	0x0040
103 #define ExponentialAcc	0x0080
104 
105 #define ID_NONE		0
106 #define ID_PORT		1
107 #define ID_IF		2
108 #define ID_TYPE		4
109 #define ID_MODEL	8
110 #define ID_ALL		(ID_PORT | ID_IF | ID_TYPE | ID_MODEL)
111 
112 #define debug(...) do {						\
113 	if (debug && nodaemon)					\
114 		warnx(__VA_ARGS__);				\
115 } while (0)
116 
117 #define logerr(e, ...) do {					\
118 	log_or_warn(LOG_DAEMON | LOG_ERR, errno, __VA_ARGS__);	\
119 	exit(e);						\
120 } while (0)
121 
122 #define logerrx(e, ...) do {					\
123 	log_or_warn(LOG_DAEMON | LOG_ERR, 0, __VA_ARGS__);	\
124 	exit(e);						\
125 } while (0)
126 
127 #define logwarn(...)						\
128 	log_or_warn(LOG_DAEMON | LOG_WARNING, errno, __VA_ARGS__)
129 
130 #define logwarnx(...)						\
131 	log_or_warn(LOG_DAEMON | LOG_WARNING, 0, __VA_ARGS__)
132 
133 /* structures */
134 
135 /* symbol table entry */
136 typedef struct {
137     char *name;
138     int val;
139     int val2;
140 } symtab_t;
141 
142 /* serial PnP ID string */
143 typedef struct {
144     int revision;	/* PnP revision, 100 for 1.00 */
145     char *eisaid;	/* EISA ID including mfr ID and product ID */
146     char *serial;	/* serial No, optional */
147     char *class;	/* device class, optional */
148     char *compat;	/* list of compatible drivers, optional */
149     char *description;	/* product description, optional */
150     int neisaid;	/* length of the above fields... */
151     int nserial;
152     int nclass;
153     int ncompat;
154     int ndescription;
155 } pnpid_t;
156 
157 /* global variables */
158 
159 int	debug = 0;
160 int	nodaemon = FALSE;
161 int	background = FALSE;
162 int	paused = FALSE;
163 int	identify = ID_NONE;
164 int	extioctl = FALSE;
165 char	*pidfile = "/var/run/moused.pid";
166 struct pidfh *pfh;
167 
168 #define SCROLL_NOTSCROLLING	0
169 #define SCROLL_PREPARE		1
170 #define SCROLL_SCROLLING	2
171 
172 static int	scroll_state;
173 static int	scroll_movement;
174 static int	hscroll_movement;
175 
176 /* local variables */
177 
178 /* interface (the table must be ordered by MOUSE_IF_XXX in mouse.h) */
179 static symtab_t rifs[] = {
180     { "serial",		MOUSE_IF_SERIAL },
181     { "bus",		MOUSE_IF_BUS },
182     { "inport",		MOUSE_IF_INPORT },
183     { "ps/2",		MOUSE_IF_PS2 },
184     { "sysmouse",	MOUSE_IF_SYSMOUSE },
185     { "usb",		MOUSE_IF_USB },
186     { NULL,		MOUSE_IF_UNKNOWN },
187 };
188 
189 /* types (the table must be ordered by MOUSE_PROTO_XXX in mouse.h) */
190 static char *rnames[] = {
191     "microsoft",
192     "mousesystems",
193     "logitech",
194     "mmseries",
195     "mouseman",
196     "busmouse",
197     "inportmouse",
198     "ps/2",
199     "mmhitab",
200     "glidepoint",
201     "intellimouse",
202     "thinkingmouse",
203     "sysmouse",
204     "x10mouseremote",
205     "kidspad",
206     "versapad",
207     "jogdial",
208 #if notyet
209     "mariqua",
210 #endif
211     "gtco_digipad",
212     NULL
213 };
214 
215 /* models */
216 static symtab_t	rmodels[] = {
217     { "NetScroll",		MOUSE_MODEL_NETSCROLL },
218     { "NetMouse/NetScroll Optical", MOUSE_MODEL_NET },
219     { "GlidePoint",		MOUSE_MODEL_GLIDEPOINT },
220     { "ThinkingMouse",		MOUSE_MODEL_THINK },
221     { "IntelliMouse",		MOUSE_MODEL_INTELLI },
222     { "EasyScroll/SmartScroll",	MOUSE_MODEL_EASYSCROLL },
223     { "MouseMan+",		MOUSE_MODEL_MOUSEMANPLUS },
224     { "Kidspad",		MOUSE_MODEL_KIDSPAD },
225     { "VersaPad",		MOUSE_MODEL_VERSAPAD },
226     { "IntelliMouse Explorer",	MOUSE_MODEL_EXPLORER },
227     { "4D Mouse",		MOUSE_MODEL_4D },
228     { "4D+ Mouse",		MOUSE_MODEL_4DPLUS },
229     { "Synaptics Touchpad",	MOUSE_MODEL_SYNAPTICS },
230     { "generic",		MOUSE_MODEL_GENERIC },
231     { NULL,			MOUSE_MODEL_UNKNOWN },
232 };
233 
234 /* PnP EISA/product IDs */
235 static symtab_t pnpprod[] = {
236     /* Kensignton ThinkingMouse */
237     { "KML0001",	MOUSE_PROTO_THINK,	MOUSE_MODEL_THINK },
238     /* MS IntelliMouse */
239     { "MSH0001",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
240     /* MS IntelliMouse TrackBall */
241     { "MSH0004",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
242     /* Tremon Wheel Mouse MUSD */
243     { "HTK0001",        MOUSE_PROTO_INTELLI,    MOUSE_MODEL_INTELLI },
244     /* Genius PnP Mouse */
245     { "KYE0001",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
246     /* MouseSystems SmartScroll Mouse (OEM from Genius?) */
247     { "KYE0002",	MOUSE_PROTO_MS,		MOUSE_MODEL_EASYSCROLL },
248     /* Genius NetMouse */
249     { "KYE0003",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_NET },
250     /* Genius Kidspad, Easypad and other tablets */
251     { "KYE0005",	MOUSE_PROTO_KIDSPAD,	MOUSE_MODEL_KIDSPAD },
252     /* Genius EZScroll */
253     { "KYEEZ00",	MOUSE_PROTO_MS,		MOUSE_MODEL_EASYSCROLL },
254     /* Logitech Cordless MouseMan Wheel */
255     { "LGI8033",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
256     /* Logitech MouseMan (new 4 button model) */
257     { "LGI800C",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
258     /* Logitech MouseMan+ */
259     { "LGI8050",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
260     /* Logitech FirstMouse+ */
261     { "LGI8051",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
262     /* Logitech serial */
263     { "LGI8001",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
264     /* A4 Tech 4D/4D+ Mouse */
265     { "A4W0005",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_4D },
266     /* 8D Scroll Mouse */
267     { "PEC9802",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
268     /* Mitsumi Wireless Scroll Mouse */
269     { "MTM6401",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
270 
271     /* MS bus */
272     { "PNP0F00",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
273     /* MS serial */
274     { "PNP0F01",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
275     /* MS InPort */
276     { "PNP0F02",	MOUSE_PROTO_INPORT,	MOUSE_MODEL_GENERIC },
277     /* MS PS/2 */
278     { "PNP0F03",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
279     /*
280      * EzScroll returns PNP0F04 in the compatible device field; but it
281      * doesn't look compatible... XXX
282      */
283     /* MouseSystems */
284     { "PNP0F04",	MOUSE_PROTO_MSC,	MOUSE_MODEL_GENERIC },
285     /* MouseSystems */
286     { "PNP0F05",	MOUSE_PROTO_MSC,	MOUSE_MODEL_GENERIC },
287 #if notyet
288     /* Genius Mouse */
289     { "PNP0F06",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
290     /* Genius Mouse */
291     { "PNP0F07",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
292 #endif
293     /* Logitech serial */
294     { "PNP0F08",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
295     /* MS BallPoint serial */
296     { "PNP0F09",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
297     /* MS PnP serial */
298     { "PNP0F0A",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
299     /* MS PnP BallPoint serial */
300     { "PNP0F0B",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
301     /* MS serial comatible */
302     { "PNP0F0C",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
303     /* MS InPort comatible */
304     { "PNP0F0D",	MOUSE_PROTO_INPORT,	MOUSE_MODEL_GENERIC },
305     /* MS PS/2 comatible */
306     { "PNP0F0E",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
307     /* MS BallPoint comatible */
308     { "PNP0F0F",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
309 #if notyet
310     /* TI QuickPort */
311     { "PNP0F10",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
312 #endif
313     /* MS bus comatible */
314     { "PNP0F11",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
315     /* Logitech PS/2 */
316     { "PNP0F12",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
317     /* PS/2 */
318     { "PNP0F13",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
319 #if notyet
320     /* MS Kids Mouse */
321     { "PNP0F14",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
322 #endif
323     /* Logitech bus */
324     { "PNP0F15",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
325 #if notyet
326     /* Logitech SWIFT */
327     { "PNP0F16",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
328 #endif
329     /* Logitech serial compat */
330     { "PNP0F17",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
331     /* Logitech bus compatible */
332     { "PNP0F18",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
333     /* Logitech PS/2 compatible */
334     { "PNP0F19",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
335 #if notyet
336     /* Logitech SWIFT compatible */
337     { "PNP0F1A",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
338     /* HP Omnibook */
339     { "PNP0F1B",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
340     /* Compaq LTE TrackBall PS/2 */
341     { "PNP0F1C",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
342     /* Compaq LTE TrackBall serial */
343     { "PNP0F1D",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
344     /* MS Kidts Trackball */
345     { "PNP0F1E",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
346 #endif
347     /* Interlink VersaPad */
348     { "LNK0001",	MOUSE_PROTO_VERSAPAD,	MOUSE_MODEL_VERSAPAD },
349 
350     { NULL,		MOUSE_PROTO_UNKNOWN,	MOUSE_MODEL_GENERIC },
351 };
352 
353 /* the table must be ordered by MOUSE_PROTO_XXX in mouse.h */
354 static unsigned short rodentcflags[] =
355 {
356     (CS7	           | CREAD | CLOCAL | HUPCL),	/* MicroSoft */
357     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL),	/* MouseSystems */
358     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL),	/* Logitech */
359     (CS8 | PARENB | PARODD | CREAD | CLOCAL | HUPCL),	/* MMSeries */
360     (CS7		   | CREAD | CLOCAL | HUPCL),	/* MouseMan */
361     0,							/* Bus */
362     0,							/* InPort */
363     0,							/* PS/2 */
364     (CS8		   | CREAD | CLOCAL | HUPCL),	/* MM HitTablet */
365     (CS7	           | CREAD | CLOCAL | HUPCL),	/* GlidePoint */
366     (CS7                   | CREAD | CLOCAL | HUPCL),	/* IntelliMouse */
367     (CS7                   | CREAD | CLOCAL | HUPCL),	/* Thinking Mouse */
368     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL),	/* sysmouse */
369     (CS7	           | CREAD | CLOCAL | HUPCL),	/* X10 MouseRemote */
370     (CS8 | PARENB | PARODD | CREAD | CLOCAL | HUPCL),	/* kidspad etc. */
371     (CS8		   | CREAD | CLOCAL | HUPCL),	/* VersaPad */
372     0,							/* JogDial */
373 #if notyet
374     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL),	/* Mariqua */
375 #endif
376     (CS8		   | CREAD |	      HUPCL ),	/* GTCO Digi-Pad */
377 };
378 
379 static struct rodentparam {
380     int flags;
381     char *portname;		/* /dev/XXX */
382     int rtype;			/* MOUSE_PROTO_XXX */
383     int level;			/* operation level: 0 or greater */
384     int baudrate;
385     int rate;			/* report rate */
386     int resolution;		/* MOUSE_RES_XXX or a positive number */
387     int zmap[4];		/* MOUSE_{X|Y}AXIS or a button number */
388     int wmode;			/* wheel mode button number */
389     int mfd;			/* mouse file descriptor */
390     int cfd;			/* /dev/consolectl file descriptor */
391     int mremsfd;		/* mouse remote server file descriptor */
392     int mremcfd;		/* mouse remote client file descriptor */
393     long clickthreshold;	/* double click speed in msec */
394     long button2timeout;	/* 3 button emulation timeout */
395     mousehw_t hw;		/* mouse device hardware information */
396     mousemode_t mode;		/* protocol information */
397     float accelx;		/* Acceleration in the X axis */
398     float accely;		/* Acceleration in the Y axis */
399     float expoaccel;		/* Exponential acceleration */
400     float expoffset;		/* Movement offset for exponential accel. */
401     float remainx;		/* Remainder on X and Y axis, respectively... */
402     float remainy;		/*    ... to compensate for rounding errors. */
403     int scrollthreshold;	/* Movement distance before virtual scrolling */
404 } rodent = {
405     .flags = 0,
406     .portname = NULL,
407     .rtype = MOUSE_PROTO_UNKNOWN,
408     .level = -1,
409     .baudrate = 1200,
410     .rate = 0,
411     .resolution = MOUSE_RES_UNKNOWN,
412     .zmap = { 0, 0, 0, 0 },
413     .wmode = 0,
414     .mfd = -1,
415     .cfd = -1,
416     .mremsfd = -1,
417     .mremcfd = -1,
418     .clickthreshold = DFLT_CLICKTHRESHOLD,
419     .button2timeout = DFLT_BUTTON2TIMEOUT,
420     .accelx = 1.0,
421     .accely = 1.0,
422     .expoaccel = 1.0,
423     .expoffset = 1.0,
424     .remainx = 0.0,
425     .remainy = 0.0,
426     .scrollthreshold = DFLT_SCROLLTHRESHOLD,
427 };
428 
429 /* button status */
430 struct button_state {
431     int count;		/* 0: up, 1: single click, 2: double click,... */
432     struct timeval tv;	/* timestamp on the last button event */
433 };
434 static struct button_state	bstate[MOUSE_MAXBUTTON]; /* button state */
435 static struct button_state	*mstate[MOUSE_MAXBUTTON];/* mapped button st.*/
436 static struct button_state	zstate[4];		 /* Z/W axis state */
437 
438 /* state machine for 3 button emulation */
439 
440 #define S0	0	/* start */
441 #define S1	1	/* button 1 delayed down */
442 #define S2	2	/* button 3 delayed down */
443 #define S3	3	/* both buttons down -> button 2 down */
444 #define S4	4	/* button 1 delayed up */
445 #define S5	5	/* button 1 down */
446 #define S6	6	/* button 3 down */
447 #define S7	7	/* both buttons down */
448 #define S8	8	/* button 3 delayed up */
449 #define S9	9	/* button 1 or 3 up after S3 */
450 
451 #define A(b1, b3)	(((b1) ? 2 : 0) | ((b3) ? 1 : 0))
452 #define A_TIMEOUT	4
453 #define S_DELAYED(st)	(states[st].s[A_TIMEOUT] != (st))
454 
455 static struct {
456     int s[A_TIMEOUT + 1];
457     int buttons;
458     int mask;
459     int timeout;
460 } states[10] = {
461     /* S0 */
462     { { S0, S2, S1, S3, S0 }, 0, ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN), FALSE },
463     /* S1 */
464     { { S4, S2, S1, S3, S5 }, 0, ~MOUSE_BUTTON1DOWN, FALSE },
465     /* S2 */
466     { { S8, S2, S1, S3, S6 }, 0, ~MOUSE_BUTTON3DOWN, FALSE },
467     /* S3 */
468     { { S0, S9, S9, S3, S3 }, MOUSE_BUTTON2DOWN, ~0, FALSE },
469     /* S4 */
470     { { S0, S2, S1, S3, S0 }, MOUSE_BUTTON1DOWN, ~0, TRUE },
471     /* S5 */
472     { { S0, S2, S5, S7, S5 }, MOUSE_BUTTON1DOWN, ~0, FALSE },
473     /* S6 */
474     { { S0, S6, S1, S7, S6 }, MOUSE_BUTTON3DOWN, ~0, FALSE },
475     /* S7 */
476     { { S0, S6, S5, S7, S7 }, MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN, ~0, FALSE },
477     /* S8 */
478     { { S0, S2, S1, S3, S0 }, MOUSE_BUTTON3DOWN, ~0, TRUE },
479     /* S9 */
480     { { S0, S9, S9, S3, S9 }, 0, ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN), FALSE },
481 };
482 static int		mouse_button_state;
483 static struct timeval	mouse_button_state_tv;
484 static int		mouse_move_delayed;
485 
486 static jmp_buf env;
487 
488 static int		drift_distance = 4;   /* max steps X+Y */
489 static int		drift_time = 500;   /* in 0.5 sec */
490 static struct timeval	drift_time_tv;
491 static struct timeval	drift_2time_tv;   /* 2*drift_time */
492 static int		drift_after = 4000;   /* 4 sec */
493 static struct timeval	drift_after_tv;
494 static int		drift_terminate = FALSE;
495 static struct timeval	drift_current_tv;
496 static struct timeval	drift_tmp;
497 static struct timeval	drift_last_activity = {0,0};
498 static struct drift_xy {
499 	int x; int y; }	drift_last = {0,0};   /* steps in last drift_time */
500 static struct timeval	drift_since = {0,0};
501 static struct drift_xy  drift_previous={0,0}; /* steps in previous drift_time */
502 
503 /* function prototypes */
504 
505 static void	linacc(int, int, int*, int*);
506 static void	expoacc(int, int, int*, int*);
507 static void	moused(void);
508 static void	hup(int sig);
509 static void	cleanup(int sig);
510 static void	pause_mouse(int sig);
511 static void	usage(void);
512 static void	log_or_warn(int log_pri, int errnum, const char *fmt, ...)
513 		    __printflike(3, 4);
514 
515 static int	r_identify(void);
516 static char	*r_if(int type);
517 static char	*r_name(int type);
518 static char	*r_model(int model);
519 static void	r_init(void);
520 static int	r_protocol(u_char b, mousestatus_t *act);
521 static int	r_statetrans(mousestatus_t *a1, mousestatus_t *a2, int trans);
522 static int	r_installmap(char *arg);
523 static void	r_map(mousestatus_t *act1, mousestatus_t *act2);
524 static void	r_timestamp(mousestatus_t *act);
525 static int	r_timeout(void);
526 static void	r_click(mousestatus_t *act);
527 static void	setmousespeed(int old, int new, unsigned cflag);
528 
529 static int	pnpwakeup1(void);
530 static int	pnpwakeup2(void);
531 static int	pnpgets(char *buf);
532 static int	pnpparse(pnpid_t *id, char *buf, int len);
533 static symtab_t	*pnpproto(pnpid_t *id);
534 
535 static symtab_t	*gettoken(symtab_t *tab, char *s, int len);
536 static char	*gettokenname(symtab_t *tab, int val);
537 
538 static void	mremote_serversetup();
539 static void	mremote_clientchg(int add);
540 
541 static int	kidspad(u_char rxc, mousestatus_t *act);
542 static int	gtco_digipad(u_char, mousestatus_t *);
543 
544 static int	usbmodule(void);
545 
546 int
547 main(int argc, char *argv[])
548 {
549     int c;
550     int	i;
551     int	j;
552     int retry;
553 
554     for (i = 0; i < MOUSE_MAXBUTTON; ++i)
555 	mstate[i] = &bstate[i];
556 
557     while ((c = getopt(argc, argv, "3A:C:DE:F:HI:PRS:T:VU:a:cdfhi:l:m:p:r:st:w:z:")) != -1)
558 	switch(c) {
559 
560 	case '3':
561 	    rodent.flags |= Emulate3Button;
562 	    break;
563 
564 	case 'E':
565 	    rodent.button2timeout = atoi(optarg);
566 	    if ((rodent.button2timeout < 0) ||
567 		(rodent.button2timeout > MAX_BUTTON2TIMEOUT)) {
568 		warnx("invalid argument `%s'", optarg);
569 		usage();
570 	    }
571 	    break;
572 
573 	case 'a':
574 	    i = sscanf(optarg, "%f,%f", &rodent.accelx, &rodent.accely);
575 	    if (i == 0) {
576 		warnx("invalid linear acceleration argument '%s'", optarg);
577 		usage();
578 	    }
579 
580 	    if (i == 1)
581 		rodent.accely = rodent.accelx;
582 
583 	    break;
584 
585 	case 'A':
586 	    rodent.flags |= ExponentialAcc;
587 	    i = sscanf(optarg, "%f,%f", &rodent.expoaccel, &rodent.expoffset);
588 	    if (i == 0) {
589 		warnx("invalid exponential acceleration argument '%s'", optarg);
590 		usage();
591 	    }
592 
593 	    if (i == 1)
594 		rodent.expoffset = 1.0;
595 
596 	    break;
597 
598 	case 'c':
599 	    rodent.flags |= ChordMiddle;
600 	    break;
601 
602 	case 'd':
603 	    ++debug;
604 	    break;
605 
606 	case 'f':
607 	    nodaemon = TRUE;
608 	    break;
609 
610 	case 'i':
611 	    if (strcmp(optarg, "all") == 0)
612 		identify = ID_ALL;
613 	    else if (strcmp(optarg, "port") == 0)
614 		identify = ID_PORT;
615 	    else if (strcmp(optarg, "if") == 0)
616 		identify = ID_IF;
617 	    else if (strcmp(optarg, "type") == 0)
618 		identify = ID_TYPE;
619 	    else if (strcmp(optarg, "model") == 0)
620 		identify = ID_MODEL;
621 	    else {
622 		warnx("invalid argument `%s'", optarg);
623 		usage();
624 	    }
625 	    nodaemon = TRUE;
626 	    break;
627 
628 	case 'l':
629 	    rodent.level = atoi(optarg);
630 	    if ((rodent.level < 0) || (rodent.level > 4)) {
631 		warnx("invalid argument `%s'", optarg);
632 		usage();
633 	    }
634 	    break;
635 
636 	case 'm':
637 	    if (!r_installmap(optarg)) {
638 		warnx("invalid argument `%s'", optarg);
639 		usage();
640 	    }
641 	    break;
642 
643 	case 'p':
644 	    rodent.portname = optarg;
645 	    break;
646 
647 	case 'r':
648 	    if (strcmp(optarg, "high") == 0)
649 		rodent.resolution = MOUSE_RES_HIGH;
650 	    else if (strcmp(optarg, "medium-high") == 0)
651 		rodent.resolution = MOUSE_RES_HIGH;
652 	    else if (strcmp(optarg, "medium-low") == 0)
653 		rodent.resolution = MOUSE_RES_MEDIUMLOW;
654 	    else if (strcmp(optarg, "low") == 0)
655 		rodent.resolution = MOUSE_RES_LOW;
656 	    else if (strcmp(optarg, "default") == 0)
657 		rodent.resolution = MOUSE_RES_DEFAULT;
658 	    else {
659 		rodent.resolution = atoi(optarg);
660 		if (rodent.resolution <= 0) {
661 		    warnx("invalid argument `%s'", optarg);
662 		    usage();
663 		}
664 	    }
665 	    break;
666 
667 	case 's':
668 	    rodent.baudrate = 9600;
669 	    break;
670 
671 	case 'w':
672 	    i = atoi(optarg);
673 	    if ((i <= 0) || (i > MOUSE_MAXBUTTON)) {
674 		warnx("invalid argument `%s'", optarg);
675 		usage();
676 	    }
677 	    rodent.wmode = 1 << (i - 1);
678 	    break;
679 
680 	case 'z':
681 	    if (strcmp(optarg, "x") == 0)
682 		rodent.zmap[0] = MOUSE_XAXIS;
683 	    else if (strcmp(optarg, "y") == 0)
684 		rodent.zmap[0] = MOUSE_YAXIS;
685 	    else {
686 		i = atoi(optarg);
687 		/*
688 		 * Use button i for negative Z axis movement and
689 		 * button (i + 1) for positive Z axis movement.
690 		 */
691 		if ((i <= 0) || (i > MOUSE_MAXBUTTON - 1)) {
692 		    warnx("invalid argument `%s'", optarg);
693 		    usage();
694 		}
695 		rodent.zmap[0] = i;
696 		rodent.zmap[1] = i + 1;
697 		debug("optind: %d, optarg: '%s'", optind, optarg);
698 		for (j = 1; j < 4; ++j) {
699 		    if ((optind >= argc) || !isdigit(*argv[optind]))
700 			break;
701 		    i = atoi(argv[optind]);
702 		    if ((i <= 0) || (i > MOUSE_MAXBUTTON - 1)) {
703 			warnx("invalid argument `%s'", argv[optind]);
704 			usage();
705 		    }
706 		    rodent.zmap[j] = i;
707 		    ++optind;
708 		}
709 		if ((rodent.zmap[2] != 0) && (rodent.zmap[3] == 0))
710 		    rodent.zmap[3] = rodent.zmap[2] + 1;
711 	    }
712 	    break;
713 
714 	case 'C':
715 	    rodent.clickthreshold = atoi(optarg);
716 	    if ((rodent.clickthreshold < 0) ||
717 		(rodent.clickthreshold > MAX_CLICKTHRESHOLD)) {
718 		warnx("invalid argument `%s'", optarg);
719 		usage();
720 	    }
721 	    break;
722 
723 	case 'D':
724 	    rodent.flags |= ClearDTR;
725 	    break;
726 
727 	case 'F':
728 	    rodent.rate = atoi(optarg);
729 	    if (rodent.rate <= 0) {
730 		warnx("invalid argument `%s'", optarg);
731 		usage();
732 	    }
733 	    break;
734 
735 	case 'H':
736 	    rodent.flags |= HVirtualScroll;
737 	    break;
738 
739 	case 'I':
740 	    pidfile = optarg;
741 	    break;
742 
743 	case 'P':
744 	    rodent.flags |= NoPnP;
745 	    break;
746 
747 	case 'R':
748 	    rodent.flags |= ClearRTS;
749 	    break;
750 
751 	case 'S':
752 	    rodent.baudrate = atoi(optarg);
753 	    if (rodent.baudrate <= 0) {
754 		warnx("invalid argument `%s'", optarg);
755 		usage();
756 	    }
757 	    debug("rodent baudrate %d", rodent.baudrate);
758 	    break;
759 
760 	case 'T':
761 	    drift_terminate = TRUE;
762 	    sscanf(optarg, "%d,%d,%d", &drift_distance, &drift_time,
763 		&drift_after);
764 	    if (drift_distance <= 0 || drift_time <= 0 || drift_after <= 0) {
765 		warnx("invalid argument `%s'", optarg);
766 		usage();
767 	    }
768 	    debug("terminate drift: distance %d, time %d, after %d",
769 		drift_distance, drift_time, drift_after);
770 	    drift_time_tv.tv_sec = drift_time/1000;
771 	    drift_time_tv.tv_usec = (drift_time%1000)*1000;
772  	    drift_2time_tv.tv_sec = (drift_time*=2)/1000;
773 	    drift_2time_tv.tv_usec = (drift_time%1000)*1000;
774 	    drift_after_tv.tv_sec = drift_after/1000;
775 	    drift_after_tv.tv_usec = (drift_after%1000)*1000;
776 	    break;
777 
778 	case 't':
779 	    if (strcmp(optarg, "auto") == 0) {
780 		rodent.rtype = MOUSE_PROTO_UNKNOWN;
781 		rodent.flags &= ~NoPnP;
782 		rodent.level = -1;
783 		break;
784 	    }
785 	    for (i = 0; rnames[i]; i++)
786 		if (strcmp(optarg, rnames[i]) == 0) {
787 		    rodent.rtype = i;
788 		    rodent.flags |= NoPnP;
789 		    rodent.level = (i == MOUSE_PROTO_SYSMOUSE) ? 1 : 0;
790 		    break;
791 		}
792 	    if (rnames[i])
793 		break;
794 	    warnx("no such mouse type `%s'", optarg);
795 	    usage();
796 
797 	case 'V':
798 	    rodent.flags |= VirtualScroll;
799 	    break;
800 	case 'U':
801 	    rodent.scrollthreshold = atoi(optarg);
802 	    if (rodent.scrollthreshold < 0) {
803 		warnx("invalid argument `%s'", optarg);
804 		usage();
805 	    }
806 	    break;
807 
808 	case 'h':
809 	case '?':
810 	default:
811 	    usage();
812 	}
813 
814     /* fix Z axis mapping */
815     for (i = 0; i < 4; ++i) {
816 	if (rodent.zmap[i] > 0) {
817 	    for (j = 0; j < MOUSE_MAXBUTTON; ++j) {
818 		if (mstate[j] == &bstate[rodent.zmap[i] - 1])
819 		    mstate[j] = &zstate[i];
820 	    }
821 	    rodent.zmap[i] = 1 << (rodent.zmap[i] - 1);
822 	}
823     }
824 
825     /* the default port name */
826     switch(rodent.rtype) {
827 
828     case MOUSE_PROTO_INPORT:
829 	/* INPORT and BUS are the same... */
830 	rodent.rtype = MOUSE_PROTO_BUS;
831 	/* FALLTHROUGH */
832     case MOUSE_PROTO_BUS:
833 	if (!rodent.portname)
834 	    rodent.portname = "/dev/mse0";
835 	break;
836 
837     case MOUSE_PROTO_PS2:
838 	if (!rodent.portname)
839 	    rodent.portname = "/dev/psm0";
840 	break;
841 
842     default:
843 	if (rodent.portname)
844 	    break;
845 	warnx("no port name specified");
846 	usage();
847     }
848 
849     retry = 1;
850     if (strncmp(rodent.portname, "/dev/ums", 8) == 0) {
851 	if (usbmodule() != 0)
852 	    retry = 5;
853     }
854 
855     for (;;) {
856 	if (setjmp(env) == 0) {
857 	    signal(SIGHUP, hup);
858 	    signal(SIGINT , cleanup);
859 	    signal(SIGQUIT, cleanup);
860 	    signal(SIGTERM, cleanup);
861 	    signal(SIGUSR1, pause_mouse);
862 	    for (i = 0; i < retry; ++i) {
863 		if (i > 0)
864 		    sleep(2);
865 		rodent.mfd = open(rodent.portname, O_RDWR | O_NONBLOCK);
866 		if (rodent.mfd != -1 || errno != ENOENT)
867 		    break;
868 	    }
869 	    if (rodent.mfd == -1)
870 		logerr(1, "unable to open %s", rodent.portname);
871 	    if (r_identify() == MOUSE_PROTO_UNKNOWN) {
872 		logwarnx("cannot determine mouse type on %s", rodent.portname);
873 		close(rodent.mfd);
874 		rodent.mfd = -1;
875 	    }
876 
877 	    /* print some information */
878 	    if (identify != ID_NONE) {
879 		if (identify == ID_ALL)
880 		    printf("%s %s %s %s\n",
881 			rodent.portname, r_if(rodent.hw.iftype),
882 			r_name(rodent.rtype), r_model(rodent.hw.model));
883 		else if (identify & ID_PORT)
884 		    printf("%s\n", rodent.portname);
885 		else if (identify & ID_IF)
886 		    printf("%s\n", r_if(rodent.hw.iftype));
887 		else if (identify & ID_TYPE)
888 		    printf("%s\n", r_name(rodent.rtype));
889 		else if (identify & ID_MODEL)
890 		    printf("%s\n", r_model(rodent.hw.model));
891 		exit(0);
892 	    } else {
893 		debug("port: %s  interface: %s  type: %s  model: %s",
894 		    rodent.portname, r_if(rodent.hw.iftype),
895 		    r_name(rodent.rtype), r_model(rodent.hw.model));
896 	    }
897 
898 	    if (rodent.mfd == -1) {
899 		/*
900 		 * We cannot continue because of error.  Exit if the
901 		 * program has not become a daemon.  Otherwise, block
902 		 * until the the user corrects the problem and issues SIGHUP.
903 		 */
904 		if (!background)
905 		    exit(1);
906 		sigpause(0);
907 	    }
908 
909 	    r_init();			/* call init function */
910 	    moused();
911 	}
912 
913 	if (rodent.mfd != -1)
914 	    close(rodent.mfd);
915 	if (rodent.cfd != -1)
916 	    close(rodent.cfd);
917 	rodent.mfd = rodent.cfd = -1;
918     }
919     /* NOT REACHED */
920 
921     exit(0);
922 }
923 
924 static int
925 usbmodule(void)
926 {
927     return (kld_isloaded("uhub/ums") || kld_load("ums") != -1);
928 }
929 
930 /*
931  * Function to calculate linear acceleration.
932  *
933  * If there are any rounding errors, the remainder
934  * is stored in the remainx and remainy variables
935  * and taken into account upon the next movement.
936  */
937 
938 static void
939 linacc(int dx, int dy, int *movex, int *movey)
940 {
941     float fdx, fdy;
942 
943     if (dx == 0 && dy == 0) {
944 	*movex = *movey = 0;
945 	return;
946     }
947     fdx = dx * rodent.accelx + rodent.remainx;
948     fdy = dy * rodent.accely + rodent.remainy;
949     *movex = lround(fdx);
950     *movey = lround(fdy);
951     rodent.remainx = fdx - *movex;
952     rodent.remainy = fdy - *movey;
953 }
954 
955 /*
956  * Function to calculate exponential acceleration.
957  * (Also includes linear acceleration if enabled.)
958  *
959  * In order to give a smoother behaviour, we record the four
960  * most recent non-zero movements and use their average value
961  * to calculate the acceleration.
962  */
963 
964 static void
965 expoacc(int dx, int dy, int *movex, int *movey)
966 {
967     static float lastlength[3] = {0.0, 0.0, 0.0};
968     float fdx, fdy, length, lbase, accel;
969 
970     if (dx == 0 && dy == 0) {
971 	*movex = *movey = 0;
972 	return;
973     }
974     fdx = dx * rodent.accelx;
975     fdy = dy * rodent.accely;
976     length = sqrtf((fdx * fdx) + (fdy * fdy));		/* Pythagoras */
977     length = (length + lastlength[0] + lastlength[1] + lastlength[2]) / 4;
978     lbase = length / rodent.expoffset;
979     accel = powf(lbase, rodent.expoaccel) / lbase;
980     fdx = fdx * accel + rodent.remainx;
981     fdy = fdy * accel + rodent.remainy;
982     *movex = lroundf(fdx);
983     *movey = lroundf(fdy);
984     rodent.remainx = fdx - *movex;
985     rodent.remainy = fdy - *movey;
986     lastlength[2] = lastlength[1];
987     lastlength[1] = lastlength[0];
988     lastlength[0] = length;	/* Insert new average, not original length! */
989 }
990 
991 static void
992 moused(void)
993 {
994     struct mouse_info mouse;
995     mousestatus_t action0;		/* original mouse action */
996     mousestatus_t action;		/* interrim buffer */
997     mousestatus_t action2;		/* mapped action */
998     struct timeval timeout;
999     fd_set fds;
1000     u_char b;
1001     pid_t mpid;
1002     int flags;
1003     int c;
1004     int i;
1005 
1006     if ((rodent.cfd = open("/dev/consolectl", O_RDWR, 0)) == -1)
1007 	logerr(1, "cannot open /dev/consolectl");
1008 
1009     if (!nodaemon && !background) {
1010 	pfh = pidfile_open(pidfile, 0600, &mpid);
1011 	if (pfh == NULL) {
1012 	    if (errno == EEXIST)
1013 		logerrx(1, "moused already running, pid: %d", mpid);
1014 	    logwarn("cannot open pid file");
1015 	}
1016 	if (daemon(0, 0)) {
1017 	    int saved_errno = errno;
1018 	    pidfile_remove(pfh);
1019 	    errno = saved_errno;
1020 	    logerr(1, "failed to become a daemon");
1021 	} else {
1022 	    background = TRUE;
1023 	    pidfile_write(pfh);
1024 	}
1025     }
1026 
1027     /* clear mouse data */
1028     bzero(&action0, sizeof(action0));
1029     bzero(&action, sizeof(action));
1030     bzero(&action2, sizeof(action2));
1031     bzero(&mouse, sizeof(mouse));
1032     mouse_button_state = S0;
1033     gettimeofday(&mouse_button_state_tv, NULL);
1034     mouse_move_delayed = 0;
1035     for (i = 0; i < MOUSE_MAXBUTTON; ++i) {
1036 	bstate[i].count = 0;
1037 	bstate[i].tv = mouse_button_state_tv;
1038     }
1039     for (i = 0; i < sizeof(zstate)/sizeof(zstate[0]); ++i) {
1040 	zstate[i].count = 0;
1041 	zstate[i].tv = mouse_button_state_tv;
1042     }
1043 
1044     /* choose which ioctl command to use */
1045     mouse.operation = MOUSE_MOTION_EVENT;
1046     extioctl = (ioctl(rodent.cfd, CONS_MOUSECTL, &mouse) == 0);
1047 
1048     /* process mouse data */
1049     timeout.tv_sec = 0;
1050     timeout.tv_usec = 20000;		/* 20 msec */
1051     for (;;) {
1052 
1053 	FD_ZERO(&fds);
1054 	FD_SET(rodent.mfd, &fds);
1055 	if (rodent.mremsfd >= 0)
1056 	    FD_SET(rodent.mremsfd, &fds);
1057 	if (rodent.mremcfd >= 0)
1058 	    FD_SET(rodent.mremcfd, &fds);
1059 
1060 	c = select(FD_SETSIZE, &fds, NULL, NULL,
1061 		   (rodent.flags & Emulate3Button) ? &timeout : NULL);
1062 	if (c < 0) {                    /* error */
1063 	    logwarn("failed to read from mouse");
1064 	    continue;
1065 	} else if (c == 0) {            /* timeout */
1066 	    /* assert(rodent.flags & Emulate3Button) */
1067 	    action0.button = action0.obutton;
1068 	    action0.dx = action0.dy = action0.dz = 0;
1069 	    action0.flags = flags = 0;
1070 	    if (r_timeout() && r_statetrans(&action0, &action, A_TIMEOUT)) {
1071 		if (debug > 2)
1072 		    debug("flags:%08x buttons:%08x obuttons:%08x",
1073 			  action.flags, action.button, action.obutton);
1074 	    } else {
1075 		action0.obutton = action0.button;
1076 		continue;
1077 	    }
1078 	} else {
1079 	    /*  MouseRemote client connect/disconnect  */
1080 	    if ((rodent.mremsfd >= 0) && FD_ISSET(rodent.mremsfd, &fds)) {
1081 		mremote_clientchg(TRUE);
1082 		continue;
1083 	    }
1084 	    if ((rodent.mremcfd >= 0) && FD_ISSET(rodent.mremcfd, &fds)) {
1085 		mremote_clientchg(FALSE);
1086 		continue;
1087 	    }
1088 	    /* mouse movement */
1089 	    if (read(rodent.mfd, &b, 1) == -1) {
1090 		if (errno == EWOULDBLOCK)
1091 		    continue;
1092 		else
1093 		    return;
1094 	    }
1095 	    if ((flags = r_protocol(b, &action0)) == 0)
1096 		continue;
1097 
1098 	    if ((rodent.flags & VirtualScroll) || (rodent.flags & HVirtualScroll)) {
1099 		/* Allow middle button drags to scroll up and down */
1100 		if (action0.button == MOUSE_BUTTON2DOWN) {
1101 		    if (scroll_state == SCROLL_NOTSCROLLING) {
1102 			scroll_state = SCROLL_PREPARE;
1103 			debug("PREPARING TO SCROLL");
1104 		    }
1105 		    debug("[BUTTON2] flags:%08x buttons:%08x obuttons:%08x",
1106 			  action.flags, action.button, action.obutton);
1107 		} else {
1108 		    debug("[NOTBUTTON2] flags:%08x buttons:%08x obuttons:%08x",
1109 			  action.flags, action.button, action.obutton);
1110 
1111 		    /* This isn't a middle button down... move along... */
1112 		    if (scroll_state == SCROLL_SCROLLING) {
1113 			/*
1114 			 * We were scrolling, someone let go of button 2.
1115 			 * Now turn autoscroll off.
1116 			 */
1117 			scroll_state = SCROLL_NOTSCROLLING;
1118 			debug("DONE WITH SCROLLING / %d", scroll_state);
1119 		    } else if (scroll_state == SCROLL_PREPARE) {
1120 			mousestatus_t newaction = action0;
1121 
1122 			/* We were preparing to scroll, but we never moved... */
1123 			r_timestamp(&action0);
1124 			r_statetrans(&action0, &newaction,
1125 				     A(newaction.button & MOUSE_BUTTON1DOWN,
1126 				       action0.button & MOUSE_BUTTON3DOWN));
1127 
1128 			/* Send middle down */
1129 			newaction.button = MOUSE_BUTTON2DOWN;
1130 			r_click(&newaction);
1131 
1132 			/* Send middle up */
1133 			r_timestamp(&newaction);
1134 			newaction.obutton = newaction.button;
1135 			newaction.button = action0.button;
1136 			r_click(&newaction);
1137 		    }
1138 		}
1139 	    }
1140 
1141 	    r_timestamp(&action0);
1142 	    r_statetrans(&action0, &action,
1143 			 A(action0.button & MOUSE_BUTTON1DOWN,
1144 			   action0.button & MOUSE_BUTTON3DOWN));
1145 	    debug("flags:%08x buttons:%08x obuttons:%08x", action.flags,
1146 		  action.button, action.obutton);
1147 	}
1148 	action0.obutton = action0.button;
1149 	flags &= MOUSE_POSCHANGED;
1150 	flags |= action.obutton ^ action.button;
1151 	action.flags = flags;
1152 
1153 	if (flags) {			/* handler detected action */
1154 	    r_map(&action, &action2);
1155 	    debug("activity : buttons 0x%08x  dx %d  dy %d  dz %d",
1156 		action2.button, action2.dx, action2.dy, action2.dz);
1157 
1158 	    if ((rodent.flags & VirtualScroll) || (rodent.flags & HVirtualScroll)) {
1159 		/*
1160 		 * If *only* the middle button is pressed AND we are moving
1161 		 * the stick/trackpoint/nipple, scroll!
1162 		 */
1163 		if (scroll_state == SCROLL_PREPARE) {
1164 		    /* Ok, Set we're really scrolling now.... */
1165 		    if (action2.dy || action2.dx)
1166 			scroll_state = SCROLL_SCROLLING;
1167 		}
1168 		if (scroll_state == SCROLL_SCROLLING) {
1169 			 if (rodent.flags & VirtualScroll) {
1170 				 scroll_movement += action2.dy;
1171 				 debug("SCROLL: %d", scroll_movement);
1172 
1173 			    if (scroll_movement < -rodent.scrollthreshold) {
1174 				/* Scroll down */
1175 				action2.dz = -1;
1176 				scroll_movement = 0;
1177 			    }
1178 			    else if (scroll_movement > rodent.scrollthreshold) {
1179 				/* Scroll up */
1180 				action2.dz = 1;
1181 				scroll_movement = 0;
1182 			    }
1183 			 }
1184 			 if (rodent.flags & HVirtualScroll) {
1185 				 hscroll_movement += action2.dx;
1186 				 debug("HORIZONTAL SCROLL: %d", hscroll_movement);
1187 
1188 				 if (hscroll_movement < -rodent.scrollthreshold) {
1189 					 action2.dz = -2;
1190 					 hscroll_movement = 0;
1191 				 }
1192 				 else if (hscroll_movement > rodent.scrollthreshold) {
1193 					 action2.dz = 2;
1194 					 hscroll_movement = 0;
1195 				 }
1196 			 }
1197 
1198 		    /* Don't move while scrolling */
1199 		    action2.dx = action2.dy = 0;
1200 		}
1201 	    }
1202 
1203 	    if (drift_terminate) {
1204 		if (flags != MOUSE_POSCHANGED || action.dz || action2.dz)
1205 		    drift_last_activity = drift_current_tv;
1206 		else {
1207 		    /* X or/and Y movement only - possibly drift */
1208 		    timersub(&drift_current_tv,&drift_last_activity,&drift_tmp);
1209 		    if (timercmp(&drift_tmp, &drift_after_tv, >)) {
1210 			timersub(&drift_current_tv, &drift_since, &drift_tmp);
1211 			if (timercmp(&drift_tmp, &drift_time_tv, <)) {
1212 			    drift_last.x += action2.dx;
1213 			    drift_last.y += action2.dy;
1214 			} else {
1215 			    /* discard old accumulated steps (drift) */
1216 			    if (timercmp(&drift_tmp, &drift_2time_tv, >))
1217 				drift_previous.x = drift_previous.y = 0;
1218 			    else
1219 				drift_previous = drift_last;
1220 			    drift_last.x = action2.dx;
1221 			    drift_last.y = action2.dy;
1222 			    drift_since = drift_current_tv;
1223 			}
1224 			if (abs(drift_last.x) + abs(drift_last.y)
1225 			  > drift_distance) {
1226 			    /* real movement, pass all accumulated steps */
1227 			    action2.dx = drift_previous.x + drift_last.x;
1228 			    action2.dy = drift_previous.y + drift_last.y;
1229 			    /* and reset accumulators */
1230 			    timerclear(&drift_since);
1231 			    drift_last.x = drift_last.y = 0;
1232 			    /* drift_previous will be cleared at next movement*/
1233 			    drift_last_activity = drift_current_tv;
1234 			} else {
1235 			    continue;   /* don't pass current movement to
1236 					 * console driver */
1237 			}
1238 		    }
1239 		}
1240 	    }
1241 
1242 	    if (extioctl) {
1243 		/* Defer clicks until we aren't VirtualScroll'ing. */
1244 		if (scroll_state == SCROLL_NOTSCROLLING)
1245 		    r_click(&action2);
1246 
1247 		if (action2.flags & MOUSE_POSCHANGED) {
1248 		    mouse.operation = MOUSE_MOTION_EVENT;
1249 		    mouse.u.data.buttons = action2.button;
1250 		    if (rodent.flags & ExponentialAcc) {
1251 			expoacc(action2.dx, action2.dy,
1252 			    &mouse.u.data.x, &mouse.u.data.y);
1253 		    }
1254 		    else {
1255 			linacc(action2.dx, action2.dy,
1256 			    &mouse.u.data.x, &mouse.u.data.y);
1257 		    }
1258 		    mouse.u.data.z = action2.dz;
1259 		    if (debug < 2)
1260 			if (!paused)
1261 				ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
1262 		}
1263 	    } else {
1264 		mouse.operation = MOUSE_ACTION;
1265 		mouse.u.data.buttons = action2.button;
1266 		if (rodent.flags & ExponentialAcc) {
1267 		    expoacc(action2.dx, action2.dy,
1268 			&mouse.u.data.x, &mouse.u.data.y);
1269 		}
1270 		else {
1271 		    linacc(action2.dx, action2.dy,
1272 			&mouse.u.data.x, &mouse.u.data.y);
1273 		}
1274 		mouse.u.data.z = action2.dz;
1275 		if (debug < 2)
1276 		    if (!paused)
1277 			ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
1278 	    }
1279 
1280 	    /*
1281 	     * If the Z axis movement is mapped to an imaginary physical
1282 	     * button, we need to cook up a corresponding button `up' event
1283 	     * after sending a button `down' event.
1284 	     */
1285 	    if ((rodent.zmap[0] > 0) && (action.dz != 0)) {
1286 		action.obutton = action.button;
1287 		action.dx = action.dy = action.dz = 0;
1288 		r_map(&action, &action2);
1289 		debug("activity : buttons 0x%08x  dx %d  dy %d  dz %d",
1290 		    action2.button, action2.dx, action2.dy, action2.dz);
1291 
1292 		if (extioctl) {
1293 		    r_click(&action2);
1294 		} else {
1295 		    mouse.operation = MOUSE_ACTION;
1296 		    mouse.u.data.buttons = action2.button;
1297 		    mouse.u.data.x = mouse.u.data.y = mouse.u.data.z = 0;
1298 		    if (debug < 2)
1299 			if (!paused)
1300 			    ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
1301 		}
1302 	    }
1303 	}
1304     }
1305     /* NOT REACHED */
1306 }
1307 
1308 static void
1309 hup(int sig)
1310 {
1311     longjmp(env, 1);
1312 }
1313 
1314 static void
1315 cleanup(int sig)
1316 {
1317     if (rodent.rtype == MOUSE_PROTO_X10MOUSEREM)
1318 	unlink(_PATH_MOUSEREMOTE);
1319     exit(0);
1320 }
1321 
1322 static void
1323 pause_mouse(int sig)
1324 {
1325     paused = !paused;
1326 }
1327 
1328 /**
1329  ** usage
1330  **
1331  ** Complain, and free the CPU for more worthy tasks
1332  **/
1333 static void
1334 usage(void)
1335 {
1336     fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n",
1337 	"usage: moused [-DRcdfs] [-I file] [-F rate] [-r resolution] [-S baudrate]",
1338 	"              [-VH [-U threshold]] [-a X[,Y]] [-C threshold] [-m N=M] [-w N]",
1339 	"              [-z N] [-t <mousetype>] [-l level] [-3 [-E timeout]]",
1340 	"              [-T distance[,time[,after]]] -p <port>",
1341 	"       moused [-d] -i <port|if|type|model|all> -p <port>");
1342     exit(1);
1343 }
1344 
1345 /*
1346  * Output an error message to syslog or stderr as appropriate. If
1347  * `errnum' is non-zero, append its string form to the message.
1348  */
1349 static void
1350 log_or_warn(int log_pri, int errnum, const char *fmt, ...)
1351 {
1352 	va_list ap;
1353 	char buf[256];
1354 
1355 	va_start(ap, fmt);
1356 	vsnprintf(buf, sizeof(buf), fmt, ap);
1357 	va_end(ap);
1358 	if (errnum) {
1359 		strlcat(buf, ": ", sizeof(buf));
1360 		strlcat(buf, strerror(errnum), sizeof(buf));
1361 	}
1362 
1363 	if (background)
1364 		syslog(log_pri, "%s", buf);
1365 	else
1366 		warnx("%s", buf);
1367 }
1368 
1369 /**
1370  ** Mouse interface code, courtesy of XFree86 3.1.2.
1371  **
1372  ** Note: Various bits have been trimmed, and in my shortsighted enthusiasm
1373  ** to clean, reformat and rationalise naming, it's quite possible that
1374  ** some things in here have been broken.
1375  **
1376  ** I hope not 8)
1377  **
1378  ** The following code is derived from a module marked :
1379  **/
1380 
1381 /* $XConsortium: xf86_Mouse.c,v 1.2 94/10/12 20:33:21 kaleb Exp $ */
1382 /* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86_Mouse.c,v 3.2 1995/01/28
1383  17:03:40 dawes Exp $ */
1384 /*
1385  *
1386  * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
1387  * Copyright 1993 by David Dawes <dawes@physics.su.oz.au>
1388  *
1389  * Permission to use, copy, modify, distribute, and sell this software and its
1390  * documentation for any purpose is hereby granted without fee, provided that
1391  * the above copyright notice appear in all copies and that both that
1392  * copyright notice and this permission notice appear in supporting
1393  * documentation, and that the names of Thomas Roell and David Dawes not be
1394  * used in advertising or publicity pertaining to distribution of the
1395  * software without specific, written prior permission.  Thomas Roell
1396  * and David Dawes makes no representations about the suitability of this
1397  * software for any purpose.  It is provided "as is" without express or
1398  * implied warranty.
1399  *
1400  * THOMAS ROELL AND DAVID DAWES DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
1401  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
1402  * FITNESS, IN NO EVENT SHALL THOMAS ROELL OR DAVID DAWES BE LIABLE FOR ANY
1403  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
1404  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
1405  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
1406  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1407  *
1408  */
1409 
1410 /**
1411  ** GlidePoint support from XFree86 3.2.
1412  ** Derived from the module:
1413  **/
1414 
1415 /* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86_Mouse.c,v 3.19 1996/10/16 14:40:51 dawes Exp $ */
1416 /* $XConsortium: xf86_Mouse.c /main/10 1996/01/30 15:16:12 kaleb $ */
1417 
1418 /* the following table must be ordered by MOUSE_PROTO_XXX in mouse.h */
1419 static unsigned char proto[][7] = {
1420     /*  hd_mask hd_id   dp_mask dp_id   bytes b4_mask b4_id */
1421     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x23,  0x00 }, /* MicroSoft */
1422     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* MouseSystems */
1423     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* Logitech */
1424     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* MMSeries */
1425     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* MouseMan */
1426     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* Bus */
1427     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* InPort */
1428     {	0xc0,	0x00,	0x00,	0x00,	3,    0x00,  0xff }, /* PS/2 mouse */
1429     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* MM HitTablet */
1430     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* GlidePoint */
1431     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x3f,  0x00 }, /* IntelliMouse */
1432     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* ThinkingMouse */
1433     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* sysmouse */
1434     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x23,  0x00 }, /* X10 MouseRem */
1435     {	0x80,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* KIDSPAD */
1436     {	0xc3,	0xc0,	0x00,	0x00,	6,    0x00,  0xff }, /* VersaPad */
1437     {	0x00,	0x00,	0x00,	0x00,	1,    0x00,  0xff }, /* JogDial */
1438 #if notyet
1439     {	0xf8,	0x80,	0x00,	0x00,	5,   ~0x2f,  0x10 }, /* Mariqua */
1440 #endif
1441 };
1442 static unsigned char cur_proto[7];
1443 
1444 static int
1445 r_identify(void)
1446 {
1447     char pnpbuf[256];	/* PnP identifier string may be up to 256 bytes long */
1448     pnpid_t pnpid;
1449     symtab_t *t;
1450     int level;
1451     int len;
1452 
1453     /* set the driver operation level, if applicable */
1454     if (rodent.level < 0)
1455 	rodent.level = 1;
1456     ioctl(rodent.mfd, MOUSE_SETLEVEL, &rodent.level);
1457     rodent.level = (ioctl(rodent.mfd, MOUSE_GETLEVEL, &level) == 0) ? level : 0;
1458 
1459     /*
1460      * Interrogate the driver and get some intelligence on the device...
1461      * The following ioctl functions are not always supported by device
1462      * drivers.  When the driver doesn't support them, we just trust the
1463      * user to supply valid information.
1464      */
1465     rodent.hw.iftype = MOUSE_IF_UNKNOWN;
1466     rodent.hw.model = MOUSE_MODEL_GENERIC;
1467     ioctl(rodent.mfd, MOUSE_GETHWINFO, &rodent.hw);
1468 
1469     if (rodent.rtype != MOUSE_PROTO_UNKNOWN)
1470 	bcopy(proto[rodent.rtype], cur_proto, sizeof(cur_proto));
1471     rodent.mode.protocol = MOUSE_PROTO_UNKNOWN;
1472     rodent.mode.rate = -1;
1473     rodent.mode.resolution = MOUSE_RES_UNKNOWN;
1474     rodent.mode.accelfactor = 0;
1475     rodent.mode.level = 0;
1476     if (ioctl(rodent.mfd, MOUSE_GETMODE, &rodent.mode) == 0) {
1477 	if ((rodent.mode.protocol == MOUSE_PROTO_UNKNOWN)
1478 	    || (rodent.mode.protocol >= sizeof(proto)/sizeof(proto[0]))) {
1479 	    logwarnx("unknown mouse protocol (%d)", rodent.mode.protocol);
1480 	    return MOUSE_PROTO_UNKNOWN;
1481 	} else {
1482 	    /* INPORT and BUS are the same... */
1483 	    if (rodent.mode.protocol == MOUSE_PROTO_INPORT)
1484 		rodent.mode.protocol = MOUSE_PROTO_BUS;
1485 	    if (rodent.mode.protocol != rodent.rtype) {
1486 		/* Hmm, the driver doesn't agree with the user... */
1487 		if (rodent.rtype != MOUSE_PROTO_UNKNOWN)
1488 		    logwarnx("mouse type mismatch (%s != %s), %s is assumed",
1489 			r_name(rodent.mode.protocol), r_name(rodent.rtype),
1490 			r_name(rodent.mode.protocol));
1491 		rodent.rtype = rodent.mode.protocol;
1492 		bcopy(proto[rodent.rtype], cur_proto, sizeof(cur_proto));
1493 	    }
1494 	}
1495 	cur_proto[4] = rodent.mode.packetsize;
1496 	cur_proto[0] = rodent.mode.syncmask[0];	/* header byte bit mask */
1497 	cur_proto[1] = rodent.mode.syncmask[1];	/* header bit pattern */
1498     }
1499 
1500     /* maybe this is a PnP mouse... */
1501     if (rodent.mode.protocol == MOUSE_PROTO_UNKNOWN) {
1502 
1503 	if (rodent.flags & NoPnP)
1504 	    return rodent.rtype;
1505 	if (((len = pnpgets(pnpbuf)) <= 0) || !pnpparse(&pnpid, pnpbuf, len))
1506 	    return rodent.rtype;
1507 
1508 	debug("PnP serial mouse: '%*.*s' '%*.*s' '%*.*s'",
1509 	    pnpid.neisaid, pnpid.neisaid, pnpid.eisaid,
1510 	    pnpid.ncompat, pnpid.ncompat, pnpid.compat,
1511 	    pnpid.ndescription, pnpid.ndescription, pnpid.description);
1512 
1513 	/* we have a valid PnP serial device ID */
1514 	rodent.hw.iftype = MOUSE_IF_SERIAL;
1515 	t = pnpproto(&pnpid);
1516 	if (t != NULL) {
1517 	    rodent.mode.protocol = t->val;
1518 	    rodent.hw.model = t->val2;
1519 	} else {
1520 	    rodent.mode.protocol = MOUSE_PROTO_UNKNOWN;
1521 	}
1522 	if (rodent.mode.protocol == MOUSE_PROTO_INPORT)
1523 	    rodent.mode.protocol = MOUSE_PROTO_BUS;
1524 
1525 	/* make final adjustment */
1526 	if (rodent.mode.protocol != MOUSE_PROTO_UNKNOWN) {
1527 	    if (rodent.mode.protocol != rodent.rtype) {
1528 		/* Hmm, the device doesn't agree with the user... */
1529 		if (rodent.rtype != MOUSE_PROTO_UNKNOWN)
1530 		    logwarnx("mouse type mismatch (%s != %s), %s is assumed",
1531 			r_name(rodent.mode.protocol), r_name(rodent.rtype),
1532 			r_name(rodent.mode.protocol));
1533 		rodent.rtype = rodent.mode.protocol;
1534 		bcopy(proto[rodent.rtype], cur_proto, sizeof(cur_proto));
1535 	    }
1536 	}
1537     }
1538 
1539     debug("proto params: %02x %02x %02x %02x %d %02x %02x",
1540 	cur_proto[0], cur_proto[1], cur_proto[2], cur_proto[3],
1541 	cur_proto[4], cur_proto[5], cur_proto[6]);
1542 
1543     return rodent.rtype;
1544 }
1545 
1546 static char *
1547 r_if(int iftype)
1548 {
1549     char *s;
1550 
1551     s = gettokenname(rifs, iftype);
1552     return (s == NULL) ? "unknown" : s;
1553 }
1554 
1555 static char *
1556 r_name(int type)
1557 {
1558     return ((type == MOUSE_PROTO_UNKNOWN)
1559 	|| (type > sizeof(rnames)/sizeof(rnames[0]) - 1))
1560 	? "unknown" : rnames[type];
1561 }
1562 
1563 static char *
1564 r_model(int model)
1565 {
1566     char *s;
1567 
1568     s = gettokenname(rmodels, model);
1569     return (s == NULL) ? "unknown" : s;
1570 }
1571 
1572 static void
1573 r_init(void)
1574 {
1575     unsigned char buf[16];	/* scrach buffer */
1576     fd_set fds;
1577     char *s;
1578     char c;
1579     int i;
1580 
1581     /**
1582      ** This comment is a little out of context here, but it contains
1583      ** some useful information...
1584      ********************************************************************
1585      **
1586      ** The following lines take care of the Logitech MouseMan protocols.
1587      **
1588      ** NOTE: There are different versions of both MouseMan and TrackMan!
1589      **       Hence I add another protocol P_LOGIMAN, which the user can
1590      **       specify as MouseMan in his XF86Config file. This entry was
1591      **       formerly handled as a special case of P_MS. However, people
1592      **       who don't have the middle button problem, can still specify
1593      **       Microsoft and use P_MS.
1594      **
1595      ** By default, these mice should use a 3 byte Microsoft protocol
1596      ** plus a 4th byte for the middle button. However, the mouse might
1597      ** have switched to a different protocol before we use it, so I send
1598      ** the proper sequence just in case.
1599      **
1600      ** NOTE: - all commands to (at least the European) MouseMan have to
1601      **         be sent at 1200 Baud.
1602      **       - each command starts with a '*'.
1603      **       - whenever the MouseMan receives a '*', it will switch back
1604      **	 to 1200 Baud. Hence I have to select the desired protocol
1605      **	 first, then select the baud rate.
1606      **
1607      ** The protocols supported by the (European) MouseMan are:
1608      **   -  5 byte packed binary protocol, as with the Mouse Systems
1609      **      mouse. Selected by sequence "*U".
1610      **   -  2 button 3 byte MicroSoft compatible protocol. Selected
1611      **      by sequence "*V".
1612      **   -  3 button 3+1 byte MicroSoft compatible protocol (default).
1613      **      Selected by sequence "*X".
1614      **
1615      ** The following baud rates are supported:
1616      **   -  1200 Baud (default). Selected by sequence "*n".
1617      **   -  9600 Baud. Selected by sequence "*q".
1618      **
1619      ** Selecting a sample rate is no longer supported with the MouseMan!
1620      ** Some additional lines in xf86Config.c take care of ill configured
1621      ** baud rates and sample rates. (The user will get an error.)
1622      */
1623 
1624     switch (rodent.rtype) {
1625 
1626     case MOUSE_PROTO_LOGI:
1627 	/*
1628 	 * The baud rate selection command must be sent at the current
1629 	 * baud rate; try all likely settings
1630 	 */
1631 	setmousespeed(9600, rodent.baudrate, rodentcflags[rodent.rtype]);
1632 	setmousespeed(4800, rodent.baudrate, rodentcflags[rodent.rtype]);
1633 	setmousespeed(2400, rodent.baudrate, rodentcflags[rodent.rtype]);
1634 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1635 	/* select MM series data format */
1636 	write(rodent.mfd, "S", 1);
1637 	setmousespeed(rodent.baudrate, rodent.baudrate,
1638 		      rodentcflags[MOUSE_PROTO_MM]);
1639 	/* select report rate/frequency */
1640 	if      (rodent.rate <= 0)   write(rodent.mfd, "O", 1);
1641 	else if (rodent.rate <= 15)  write(rodent.mfd, "J", 1);
1642 	else if (rodent.rate <= 27)  write(rodent.mfd, "K", 1);
1643 	else if (rodent.rate <= 42)  write(rodent.mfd, "L", 1);
1644 	else if (rodent.rate <= 60)  write(rodent.mfd, "R", 1);
1645 	else if (rodent.rate <= 85)  write(rodent.mfd, "M", 1);
1646 	else if (rodent.rate <= 125) write(rodent.mfd, "Q", 1);
1647 	else			     write(rodent.mfd, "N", 1);
1648 	break;
1649 
1650     case MOUSE_PROTO_LOGIMOUSEMAN:
1651 	/* The command must always be sent at 1200 baud */
1652 	setmousespeed(1200, 1200, rodentcflags[rodent.rtype]);
1653 	write(rodent.mfd, "*X", 2);
1654 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1655 	break;
1656 
1657     case MOUSE_PROTO_HITTAB:
1658 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1659 
1660 	/*
1661 	 * Initialize Hitachi PUMA Plus - Model 1212E to desired settings.
1662 	 * The tablet must be configured to be in MM mode, NO parity,
1663 	 * Binary Format.  xf86Info.sampleRate controls the sensativity
1664 	 * of the tablet.  We only use this tablet for it's 4-button puck
1665 	 * so we don't run in "Absolute Mode"
1666 	 */
1667 	write(rodent.mfd, "z8", 2);	/* Set Parity = "NONE" */
1668 	usleep(50000);
1669 	write(rodent.mfd, "zb", 2);	/* Set Format = "Binary" */
1670 	usleep(50000);
1671 	write(rodent.mfd, "@", 1);	/* Set Report Mode = "Stream" */
1672 	usleep(50000);
1673 	write(rodent.mfd, "R", 1);	/* Set Output Rate = "45 rps" */
1674 	usleep(50000);
1675 	write(rodent.mfd, "I\x20", 2);	/* Set Incrememtal Mode "20" */
1676 	usleep(50000);
1677 	write(rodent.mfd, "E", 1);	/* Set Data Type = "Relative */
1678 	usleep(50000);
1679 
1680 	/* Resolution is in 'lines per inch' on the Hitachi tablet */
1681 	if      (rodent.resolution == MOUSE_RES_LOW)		c = 'g';
1682 	else if (rodent.resolution == MOUSE_RES_MEDIUMLOW)	c = 'e';
1683 	else if (rodent.resolution == MOUSE_RES_MEDIUMHIGH)	c = 'h';
1684 	else if (rodent.resolution == MOUSE_RES_HIGH)		c = 'd';
1685 	else if (rodent.resolution <=   40)			c = 'g';
1686 	else if (rodent.resolution <=  100)			c = 'd';
1687 	else if (rodent.resolution <=  200)			c = 'e';
1688 	else if (rodent.resolution <=  500)			c = 'h';
1689 	else if (rodent.resolution <= 1000)			c = 'j';
1690 	else			c = 'd';
1691 	write(rodent.mfd, &c, 1);
1692 	usleep(50000);
1693 
1694 	write(rodent.mfd, "\021", 1);	/* Resume DATA output */
1695 	break;
1696 
1697     case MOUSE_PROTO_THINK:
1698 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1699 	/* the PnP ID string may be sent again, discard it */
1700 	usleep(200000);
1701 	i = FREAD;
1702 	ioctl(rodent.mfd, TIOCFLUSH, &i);
1703 	/* send the command to initialize the beast */
1704 	for (s = "E5E5"; *s; ++s) {
1705 	    write(rodent.mfd, s, 1);
1706 	    FD_ZERO(&fds);
1707 	    FD_SET(rodent.mfd, &fds);
1708 	    if (select(FD_SETSIZE, &fds, NULL, NULL, NULL) <= 0)
1709 		break;
1710 	    read(rodent.mfd, &c, 1);
1711 	    debug("%c", c);
1712 	    if (c != *s)
1713 		break;
1714 	}
1715 	break;
1716 
1717     case MOUSE_PROTO_JOGDIAL:
1718 	break;
1719     case MOUSE_PROTO_MSC:
1720 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1721 	if (rodent.flags & ClearDTR) {
1722 	   i = TIOCM_DTR;
1723 	   ioctl(rodent.mfd, TIOCMBIC, &i);
1724 	}
1725 	if (rodent.flags & ClearRTS) {
1726 	   i = TIOCM_RTS;
1727 	   ioctl(rodent.mfd, TIOCMBIC, &i);
1728 	}
1729 	break;
1730 
1731     case MOUSE_PROTO_SYSMOUSE:
1732 	if (rodent.hw.iftype == MOUSE_IF_SYSMOUSE)
1733 	    setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1734 	/* FALLTHROUGH */
1735 
1736     case MOUSE_PROTO_BUS:
1737     case MOUSE_PROTO_INPORT:
1738     case MOUSE_PROTO_PS2:
1739 	if (rodent.rate >= 0)
1740 	    rodent.mode.rate = rodent.rate;
1741 	if (rodent.resolution != MOUSE_RES_UNKNOWN)
1742 	    rodent.mode.resolution = rodent.resolution;
1743 	ioctl(rodent.mfd, MOUSE_SETMODE, &rodent.mode);
1744 	break;
1745 
1746     case MOUSE_PROTO_X10MOUSEREM:
1747 	mremote_serversetup();
1748 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1749 	break;
1750 
1751 
1752     case MOUSE_PROTO_VERSAPAD:
1753 	tcsendbreak(rodent.mfd, 0);	/* send break for 400 msec */
1754 	i = FREAD;
1755 	ioctl(rodent.mfd, TIOCFLUSH, &i);
1756 	for (i = 0; i < 7; ++i) {
1757 	    FD_ZERO(&fds);
1758 	    FD_SET(rodent.mfd, &fds);
1759 	    if (select(FD_SETSIZE, &fds, NULL, NULL, NULL) <= 0)
1760 		break;
1761 	    read(rodent.mfd, &c, 1);
1762 	    buf[i] = c;
1763 	}
1764 	debug("%s\n", buf);
1765 	if ((buf[0] != 'V') || (buf[1] != 'P')|| (buf[7] != '\r'))
1766 	    break;
1767 	setmousespeed(9600, rodent.baudrate, rodentcflags[rodent.rtype]);
1768 	tcsendbreak(rodent.mfd, 0);	/* send break for 400 msec again */
1769 	for (i = 0; i < 7; ++i) {
1770 	    FD_ZERO(&fds);
1771 	    FD_SET(rodent.mfd, &fds);
1772 	    if (select(FD_SETSIZE, &fds, NULL, NULL, NULL) <= 0)
1773 		break;
1774 	    read(rodent.mfd, &c, 1);
1775 	    debug("%c", c);
1776 	    if (c != buf[i])
1777 		break;
1778 	}
1779 	i = FREAD;
1780 	ioctl(rodent.mfd, TIOCFLUSH, &i);
1781 	break;
1782 
1783     default:
1784 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1785 	break;
1786     }
1787 }
1788 
1789 static int
1790 r_protocol(u_char rBuf, mousestatus_t *act)
1791 {
1792     /* MOUSE_MSS_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
1793     static int butmapmss[4] = {	/* Microsoft, MouseMan, GlidePoint,
1794 				   IntelliMouse, Thinking Mouse */
1795 	0,
1796 	MOUSE_BUTTON3DOWN,
1797 	MOUSE_BUTTON1DOWN,
1798 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1799     };
1800     static int butmapmss2[4] = { /* Microsoft, MouseMan, GlidePoint,
1801 				    Thinking Mouse */
1802 	0,
1803 	MOUSE_BUTTON4DOWN,
1804 	MOUSE_BUTTON2DOWN,
1805 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN,
1806     };
1807     /* MOUSE_INTELLI_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
1808     static int butmapintelli[4] = { /* IntelliMouse, NetMouse, Mie Mouse,
1809 				       MouseMan+ */
1810 	0,
1811 	MOUSE_BUTTON2DOWN,
1812 	MOUSE_BUTTON4DOWN,
1813 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN,
1814     };
1815     /* MOUSE_MSC_BUTTON?UP -> MOUSE_BUTTON?DOWN */
1816     static int butmapmsc[8] = {	/* MouseSystems, MMSeries, Logitech,
1817 				   Bus, sysmouse */
1818 	0,
1819 	MOUSE_BUTTON3DOWN,
1820 	MOUSE_BUTTON2DOWN,
1821 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN,
1822 	MOUSE_BUTTON1DOWN,
1823 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1824 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN,
1825 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN
1826     };
1827     /* MOUSE_PS2_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
1828     static int butmapps2[8] = {	/* PS/2 */
1829 	0,
1830 	MOUSE_BUTTON1DOWN,
1831 	MOUSE_BUTTON3DOWN,
1832 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1833 	MOUSE_BUTTON2DOWN,
1834 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN,
1835 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN,
1836 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN
1837     };
1838     /* for Hitachi tablet */
1839     static int butmaphit[8] = {	/* MM HitTablet */
1840 	0,
1841 	MOUSE_BUTTON3DOWN,
1842 	MOUSE_BUTTON2DOWN,
1843 	MOUSE_BUTTON1DOWN,
1844 	MOUSE_BUTTON4DOWN,
1845 	MOUSE_BUTTON5DOWN,
1846 	MOUSE_BUTTON6DOWN,
1847 	MOUSE_BUTTON7DOWN,
1848     };
1849     /* for serial VersaPad */
1850     static int butmapversa[8] = { /* VersaPad */
1851 	0,
1852 	0,
1853 	MOUSE_BUTTON3DOWN,
1854 	MOUSE_BUTTON3DOWN,
1855 	MOUSE_BUTTON1DOWN,
1856 	MOUSE_BUTTON1DOWN,
1857 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1858 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1859     };
1860     /* for PS/2 VersaPad */
1861     static int butmapversaps2[8] = { /* VersaPad */
1862 	0,
1863 	MOUSE_BUTTON3DOWN,
1864 	0,
1865 	MOUSE_BUTTON3DOWN,
1866 	MOUSE_BUTTON1DOWN,
1867 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1868 	MOUSE_BUTTON1DOWN,
1869 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1870     };
1871     static int           pBufP = 0;
1872     static unsigned char pBuf[8];
1873     static int		 prev_x, prev_y;
1874     static int		 on = FALSE;
1875     int			 x, y;
1876 
1877     debug("received char 0x%x",(int)rBuf);
1878     if (rodent.rtype == MOUSE_PROTO_KIDSPAD)
1879 	return kidspad(rBuf, act) ;
1880     if (rodent.rtype == MOUSE_PROTO_GTCO_DIGIPAD)
1881 	return gtco_digipad(rBuf, act);
1882 
1883     /*
1884      * Hack for resyncing: We check here for a package that is:
1885      *  a) illegal (detected by wrong data-package header)
1886      *  b) invalid (0x80 == -128 and that might be wrong for MouseSystems)
1887      *  c) bad header-package
1888      *
1889      * NOTE: b) is a voilation of the MouseSystems-Protocol, since values of
1890      *       -128 are allowed, but since they are very seldom we can easily
1891      *       use them as package-header with no button pressed.
1892      * NOTE/2: On a PS/2 mouse any byte is valid as a data byte. Furthermore,
1893      *         0x80 is not valid as a header byte. For a PS/2 mouse we skip
1894      *         checking data bytes.
1895      *         For resyncing a PS/2 mouse we require the two most significant
1896      *         bits in the header byte to be 0. These are the overflow bits,
1897      *         and in case of an overflow we actually lose sync. Overflows
1898      *         are very rare, however, and we quickly gain sync again after
1899      *         an overflow condition. This is the best we can do. (Actually,
1900      *         we could use bit 0x08 in the header byte for resyncing, since
1901      *         that bit is supposed to be always on, but nobody told
1902      *         Microsoft...)
1903      */
1904 
1905     if (pBufP != 0 && rodent.rtype != MOUSE_PROTO_PS2 &&
1906 	((rBuf & cur_proto[2]) != cur_proto[3] || rBuf == 0x80))
1907     {
1908 	pBufP = 0;		/* skip package */
1909     }
1910 
1911     if (pBufP == 0 && (rBuf & cur_proto[0]) != cur_proto[1])
1912 	return 0;
1913 
1914     /* is there an extra data byte? */
1915     if (pBufP >= cur_proto[4] && (rBuf & cur_proto[0]) != cur_proto[1])
1916     {
1917 	/*
1918 	 * Hack for Logitech MouseMan Mouse - Middle button
1919 	 *
1920 	 * Unfortunately this mouse has variable length packets: the standard
1921 	 * Microsoft 3 byte packet plus an optional 4th byte whenever the
1922 	 * middle button status changes.
1923 	 *
1924 	 * We have already processed the standard packet with the movement
1925 	 * and button info.  Now post an event message with the old status
1926 	 * of the left and right buttons and the updated middle button.
1927 	 */
1928 
1929 	/*
1930 	 * Even worse, different MouseMen and TrackMen differ in the 4th
1931 	 * byte: some will send 0x00/0x20, others 0x01/0x21, or even
1932 	 * 0x02/0x22, so I have to strip off the lower bits.
1933 	 *
1934 	 * [JCH-96/01/21]
1935 	 * HACK for ALPS "fourth button". (It's bit 0x10 of the "fourth byte"
1936 	 * and it is activated by tapping the glidepad with the finger! 8^)
1937 	 * We map it to bit bit3, and the reverse map in xf86Events just has
1938 	 * to be extended so that it is identified as Button 4. The lower
1939 	 * half of the reverse-map may remain unchanged.
1940 	 */
1941 
1942 	/*
1943 	 * [KY-97/08/03]
1944 	 * Receive the fourth byte only when preceding three bytes have
1945 	 * been detected (pBufP >= cur_proto[4]).  In the previous
1946 	 * versions, the test was pBufP == 0; thus, we may have mistakingly
1947 	 * received a byte even if we didn't see anything preceding
1948 	 * the byte.
1949 	 */
1950 
1951 	if ((rBuf & cur_proto[5]) != cur_proto[6]) {
1952 	    pBufP = 0;
1953 	    return 0;
1954 	}
1955 
1956 	switch (rodent.rtype) {
1957 #if notyet
1958 	case MOUSE_PROTO_MARIQUA:
1959 	    /*
1960 	     * This mouse has 16! buttons in addition to the standard
1961 	     * three of them.  They return 0x10 though 0x1f in the
1962 	     * so-called `ten key' mode and 0x30 though 0x3f in the
1963 	     * `function key' mode.  As there are only 31 bits for
1964 	     * button state (including the standard three), we ignore
1965 	     * the bit 0x20 and don't distinguish the two modes.
1966 	     */
1967 	    act->dx = act->dy = act->dz = 0;
1968 	    act->obutton = act->button;
1969 	    rBuf &= 0x1f;
1970 	    act->button = (1 << (rBuf - 13))
1971 		| (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
1972 	    /*
1973 	     * FIXME: this is a button "down" event. There needs to be
1974 	     * a corresponding button "up" event... XXX
1975 	     */
1976 	    break;
1977 #endif /* notyet */
1978 	case MOUSE_PROTO_JOGDIAL:
1979 	    break;
1980 
1981 	/*
1982 	 * IntelliMouse, NetMouse (including NetMouse Pro) and Mie Mouse
1983 	 * always send the fourth byte, whereas the fourth byte is
1984 	 * optional for GlidePoint and ThinkingMouse. The fourth byte
1985 	 * is also optional for MouseMan+ and FirstMouse+ in their
1986 	 * native mode. It is always sent if they are in the IntelliMouse
1987 	 * compatible mode.
1988 	 */
1989 	case MOUSE_PROTO_INTELLI:	/* IntelliMouse, NetMouse, Mie Mouse,
1990 					   MouseMan+ */
1991 	    act->dx = act->dy = 0;
1992 	    act->dz = (rBuf & 0x08) ? (rBuf & 0x0f) - 16 : (rBuf & 0x0f);
1993 	    if ((act->dz >= 7) || (act->dz <= -7))
1994 		act->dz = 0;
1995 	    act->obutton = act->button;
1996 	    act->button = butmapintelli[(rBuf & MOUSE_MSS_BUTTONS) >> 4]
1997 		| (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
1998 	    break;
1999 
2000 	default:
2001 	    act->dx = act->dy = act->dz = 0;
2002 	    act->obutton = act->button;
2003 	    act->button = butmapmss2[(rBuf & MOUSE_MSS_BUTTONS) >> 4]
2004 		| (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
2005 	    break;
2006 	}
2007 
2008 	act->flags = ((act->dx || act->dy || act->dz) ? MOUSE_POSCHANGED : 0)
2009 	    | (act->obutton ^ act->button);
2010 	pBufP = 0;
2011 	return act->flags;
2012     }
2013 
2014     if (pBufP >= cur_proto[4])
2015 	pBufP = 0;
2016     pBuf[pBufP++] = rBuf;
2017     if (pBufP != cur_proto[4])
2018 	return 0;
2019 
2020     /*
2021      * assembly full package
2022      */
2023 
2024     debug("assembled full packet (len %d) %x,%x,%x,%x,%x,%x,%x,%x",
2025 	cur_proto[4],
2026 	pBuf[0], pBuf[1], pBuf[2], pBuf[3],
2027 	pBuf[4], pBuf[5], pBuf[6], pBuf[7]);
2028 
2029     act->dz = 0;
2030     act->obutton = act->button;
2031     switch (rodent.rtype)
2032     {
2033     case MOUSE_PROTO_MS:		/* Microsoft */
2034     case MOUSE_PROTO_LOGIMOUSEMAN:	/* MouseMan/TrackMan */
2035     case MOUSE_PROTO_X10MOUSEREM:	/* X10 MouseRemote */
2036 	act->button = act->obutton & MOUSE_BUTTON4DOWN;
2037 	if (rodent.flags & ChordMiddle)
2038 	    act->button |= ((pBuf[0] & MOUSE_MSS_BUTTONS) == MOUSE_MSS_BUTTONS)
2039 		? MOUSE_BUTTON2DOWN
2040 		: butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
2041 	else
2042 	    act->button |= (act->obutton & MOUSE_BUTTON2DOWN)
2043 		| butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
2044 
2045 	/* Send X10 btn events to remote client (ensure -128-+127 range) */
2046 	if ((rodent.rtype == MOUSE_PROTO_X10MOUSEREM) &&
2047 	    ((pBuf[0] & 0xFC) == 0x44) && (pBuf[2] == 0x3F)) {
2048 	    if (rodent.mremcfd >= 0) {
2049 		unsigned char key = (signed char)(((pBuf[0] & 0x03) << 6) |
2050 						  (pBuf[1] & 0x3F));
2051 		write(rodent.mremcfd, &key, 1);
2052 	    }
2053 	    return 0;
2054 	}
2055 
2056 	act->dx = (signed char)(((pBuf[0] & 0x03) << 6) | (pBuf[1] & 0x3F));
2057 	act->dy = (signed char)(((pBuf[0] & 0x0C) << 4) | (pBuf[2] & 0x3F));
2058 	break;
2059 
2060     case MOUSE_PROTO_GLIDEPOINT:	/* GlidePoint */
2061     case MOUSE_PROTO_THINK:		/* ThinkingMouse */
2062     case MOUSE_PROTO_INTELLI:		/* IntelliMouse, NetMouse, Mie Mouse,
2063 					   MouseMan+ */
2064 	act->button = (act->obutton & (MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN))
2065 	    | butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
2066 	act->dx = (signed char)(((pBuf[0] & 0x03) << 6) | (pBuf[1] & 0x3F));
2067 	act->dy = (signed char)(((pBuf[0] & 0x0C) << 4) | (pBuf[2] & 0x3F));
2068 	break;
2069 
2070     case MOUSE_PROTO_MSC:		/* MouseSystems Corp */
2071 #if notyet
2072     case MOUSE_PROTO_MARIQUA:		/* Mariqua */
2073 #endif
2074 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_MSC_BUTTONS];
2075 	act->dx =    (signed char)(pBuf[1]) + (signed char)(pBuf[3]);
2076 	act->dy = - ((signed char)(pBuf[2]) + (signed char)(pBuf[4]));
2077 	break;
2078 
2079     case MOUSE_PROTO_JOGDIAL:		/* JogDial */
2080 	    if (rBuf == 0x6c)
2081 	      act->dz = -1;
2082 	    if (rBuf == 0x72)
2083 	      act->dz = 1;
2084 	    if (rBuf == 0x64)
2085 	      act->button = MOUSE_BUTTON1DOWN;
2086 	    if (rBuf == 0x75)
2087 	      act->button = 0;
2088 	break;
2089 
2090     case MOUSE_PROTO_HITTAB:		/* MM HitTablet */
2091 	act->button = butmaphit[pBuf[0] & 0x07];
2092 	act->dx = (pBuf[0] & MOUSE_MM_XPOSITIVE) ?   pBuf[1] : - pBuf[1];
2093 	act->dy = (pBuf[0] & MOUSE_MM_YPOSITIVE) ? - pBuf[2] :   pBuf[2];
2094 	break;
2095 
2096     case MOUSE_PROTO_MM:		/* MM Series */
2097     case MOUSE_PROTO_LOGI:		/* Logitech Mice */
2098 	act->button = butmapmsc[pBuf[0] & MOUSE_MSC_BUTTONS];
2099 	act->dx = (pBuf[0] & MOUSE_MM_XPOSITIVE) ?   pBuf[1] : - pBuf[1];
2100 	act->dy = (pBuf[0] & MOUSE_MM_YPOSITIVE) ? - pBuf[2] :   pBuf[2];
2101 	break;
2102 
2103     case MOUSE_PROTO_VERSAPAD:		/* VersaPad */
2104 	act->button = butmapversa[(pBuf[0] & MOUSE_VERSA_BUTTONS) >> 3];
2105 	act->button |= (pBuf[0] & MOUSE_VERSA_TAP) ? MOUSE_BUTTON4DOWN : 0;
2106 	act->dx = act->dy = 0;
2107 	if (!(pBuf[0] & MOUSE_VERSA_IN_USE)) {
2108 	    on = FALSE;
2109 	    break;
2110 	}
2111 	x = (pBuf[2] << 6) | pBuf[1];
2112 	if (x & 0x800)
2113 	    x -= 0x1000;
2114 	y = (pBuf[4] << 6) | pBuf[3];
2115 	if (y & 0x800)
2116 	    y -= 0x1000;
2117 	if (on) {
2118 	    act->dx = prev_x - x;
2119 	    act->dy = prev_y - y;
2120 	} else {
2121 	    on = TRUE;
2122 	}
2123 	prev_x = x;
2124 	prev_y = y;
2125 	break;
2126 
2127     case MOUSE_PROTO_BUS:		/* Bus */
2128     case MOUSE_PROTO_INPORT:		/* InPort */
2129 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_MSC_BUTTONS];
2130 	act->dx =   (signed char)pBuf[1];
2131 	act->dy = - (signed char)pBuf[2];
2132 	break;
2133 
2134     case MOUSE_PROTO_PS2:		/* PS/2 */
2135 	act->button = butmapps2[pBuf[0] & MOUSE_PS2_BUTTONS];
2136 	act->dx = (pBuf[0] & MOUSE_PS2_XNEG) ?    pBuf[1] - 256  :  pBuf[1];
2137 	act->dy = (pBuf[0] & MOUSE_PS2_YNEG) ?  -(pBuf[2] - 256) : -pBuf[2];
2138 	/*
2139 	 * Moused usually operates the psm driver at the operation level 1
2140 	 * which sends mouse data in MOUSE_PROTO_SYSMOUSE protocol.
2141 	 * The following code takes effect only when the user explicitly
2142 	 * requets the level 2 at which wheel movement and additional button
2143 	 * actions are encoded in model-dependent formats. At the level 0
2144 	 * the following code is no-op because the psm driver says the model
2145 	 * is MOUSE_MODEL_GENERIC.
2146 	 */
2147 	switch (rodent.hw.model) {
2148 	case MOUSE_MODEL_EXPLORER:
2149 	    /* wheel and additional button data is in the fourth byte */
2150 	    act->dz = (pBuf[3] & MOUSE_EXPLORER_ZNEG)
2151 		? (pBuf[3] & 0x0f) - 16 : (pBuf[3] & 0x0f);
2152 	    act->button |= (pBuf[3] & MOUSE_EXPLORER_BUTTON4DOWN)
2153 		? MOUSE_BUTTON4DOWN : 0;
2154 	    act->button |= (pBuf[3] & MOUSE_EXPLORER_BUTTON5DOWN)
2155 		? MOUSE_BUTTON5DOWN : 0;
2156 	    break;
2157 	case MOUSE_MODEL_INTELLI:
2158 	case MOUSE_MODEL_NET:
2159 	    /* wheel data is in the fourth byte */
2160 	    act->dz = (signed char)pBuf[3];
2161 	    if ((act->dz >= 7) || (act->dz <= -7))
2162 		act->dz = 0;
2163 	    /* some compatible mice may have additional buttons */
2164 	    act->button |= (pBuf[0] & MOUSE_PS2INTELLI_BUTTON4DOWN)
2165 		? MOUSE_BUTTON4DOWN : 0;
2166 	    act->button |= (pBuf[0] & MOUSE_PS2INTELLI_BUTTON5DOWN)
2167 		? MOUSE_BUTTON5DOWN : 0;
2168 	    break;
2169 	case MOUSE_MODEL_MOUSEMANPLUS:
2170 	    if (((pBuf[0] & MOUSE_PS2PLUS_SYNCMASK) == MOUSE_PS2PLUS_SYNC)
2171 		    && (abs(act->dx) > 191)
2172 		    && MOUSE_PS2PLUS_CHECKBITS(pBuf)) {
2173 		/* the extended data packet encodes button and wheel events */
2174 		switch (MOUSE_PS2PLUS_PACKET_TYPE(pBuf)) {
2175 		case 1:
2176 		    /* wheel data packet */
2177 		    act->dx = act->dy = 0;
2178 		    if (pBuf[2] & 0x80) {
2179 			/* horizontal roller count - ignore it XXX*/
2180 		    } else {
2181 			/* vertical roller count */
2182 			act->dz = (pBuf[2] & MOUSE_PS2PLUS_ZNEG)
2183 			    ? (pBuf[2] & 0x0f) - 16 : (pBuf[2] & 0x0f);
2184 		    }
2185 		    act->button |= (pBuf[2] & MOUSE_PS2PLUS_BUTTON4DOWN)
2186 			? MOUSE_BUTTON4DOWN : 0;
2187 		    act->button |= (pBuf[2] & MOUSE_PS2PLUS_BUTTON5DOWN)
2188 			? MOUSE_BUTTON5DOWN : 0;
2189 		    break;
2190 		case 2:
2191 		    /* this packet type is reserved by Logitech */
2192 		    /*
2193 		     * IBM ScrollPoint Mouse uses this packet type to
2194 		     * encode both vertical and horizontal scroll movement.
2195 		     */
2196 		    act->dx = act->dy = 0;
2197 		    /* horizontal roller count */
2198 		    if (pBuf[2] & 0x0f)
2199 			act->dz = (pBuf[2] & MOUSE_SPOINT_WNEG) ? -2 : 2;
2200 		    /* vertical roller count */
2201 		    if (pBuf[2] & 0xf0)
2202 			act->dz = (pBuf[2] & MOUSE_SPOINT_ZNEG) ? -1 : 1;
2203 #if 0
2204 		    /* vertical roller count */
2205 		    act->dz = (pBuf[2] & MOUSE_SPOINT_ZNEG)
2206 			? ((pBuf[2] >> 4) & 0x0f) - 16
2207 			: ((pBuf[2] >> 4) & 0x0f);
2208 		    /* horizontal roller count */
2209 		    act->dw = (pBuf[2] & MOUSE_SPOINT_WNEG)
2210 			? (pBuf[2] & 0x0f) - 16 : (pBuf[2] & 0x0f);
2211 #endif
2212 		    break;
2213 		case 0:
2214 		    /* device type packet - shouldn't happen */
2215 		    /* FALLTHROUGH */
2216 		default:
2217 		    act->dx = act->dy = 0;
2218 		    act->button = act->obutton;
2219 		    debug("unknown PS2++ packet type %d: 0x%02x 0x%02x 0x%02x\n",
2220 			  MOUSE_PS2PLUS_PACKET_TYPE(pBuf),
2221 			  pBuf[0], pBuf[1], pBuf[2]);
2222 		    break;
2223 		}
2224 	    } else {
2225 		/* preserve button states */
2226 		act->button |= act->obutton & MOUSE_EXTBUTTONS;
2227 	    }
2228 	    break;
2229 	case MOUSE_MODEL_GLIDEPOINT:
2230 	    /* `tapping' action */
2231 	    act->button |= ((pBuf[0] & MOUSE_PS2_TAP)) ? 0 : MOUSE_BUTTON4DOWN;
2232 	    break;
2233 	case MOUSE_MODEL_NETSCROLL:
2234 	    /* three addtional bytes encode buttons and wheel events */
2235 	    act->button |= (pBuf[3] & MOUSE_PS2_BUTTON3DOWN)
2236 		? MOUSE_BUTTON4DOWN : 0;
2237 	    act->button |= (pBuf[3] & MOUSE_PS2_BUTTON1DOWN)
2238 		? MOUSE_BUTTON5DOWN : 0;
2239 	    act->dz = (pBuf[3] & MOUSE_PS2_XNEG) ? pBuf[4] - 256 : pBuf[4];
2240 	    break;
2241 	case MOUSE_MODEL_THINK:
2242 	    /* the fourth button state in the first byte */
2243 	    act->button |= (pBuf[0] & MOUSE_PS2_TAP) ? MOUSE_BUTTON4DOWN : 0;
2244 	    break;
2245 	case MOUSE_MODEL_VERSAPAD:
2246 	    act->button = butmapversaps2[pBuf[0] & MOUSE_PS2VERSA_BUTTONS];
2247 	    act->button |=
2248 		(pBuf[0] & MOUSE_PS2VERSA_TAP) ? MOUSE_BUTTON4DOWN : 0;
2249 	    act->dx = act->dy = 0;
2250 	    if (!(pBuf[0] & MOUSE_PS2VERSA_IN_USE)) {
2251 		on = FALSE;
2252 		break;
2253 	    }
2254 	    x = ((pBuf[4] << 8) & 0xf00) | pBuf[1];
2255 	    if (x & 0x800)
2256 		x -= 0x1000;
2257 	    y = ((pBuf[4] << 4) & 0xf00) | pBuf[2];
2258 	    if (y & 0x800)
2259 		y -= 0x1000;
2260 	    if (on) {
2261 		act->dx = prev_x - x;
2262 		act->dy = prev_y - y;
2263 	    } else {
2264 		on = TRUE;
2265 	    }
2266 	    prev_x = x;
2267 	    prev_y = y;
2268 	    break;
2269 	case MOUSE_MODEL_4D:
2270 	    act->dx = (pBuf[1] & 0x80) ?    pBuf[1] - 256  :  pBuf[1];
2271 	    act->dy = (pBuf[2] & 0x80) ?  -(pBuf[2] - 256) : -pBuf[2];
2272 	    switch (pBuf[0] & MOUSE_4D_WHEELBITS) {
2273 	    case 0x10:
2274 		act->dz = 1;
2275 		break;
2276 	    case 0x30:
2277 		act->dz = -1;
2278 		break;
2279 	    case 0x40:	/* 2nd wheel rolling right XXX */
2280 		act->dz = 2;
2281 		break;
2282 	    case 0xc0:	/* 2nd wheel rolling left XXX */
2283 		act->dz = -2;
2284 		break;
2285 	    }
2286 	    break;
2287 	case MOUSE_MODEL_4DPLUS:
2288 	    if ((act->dx < 16 - 256) && (act->dy > 256 - 16)) {
2289 		act->dx = act->dy = 0;
2290 		if (pBuf[2] & MOUSE_4DPLUS_BUTTON4DOWN)
2291 		    act->button |= MOUSE_BUTTON4DOWN;
2292 		act->dz = (pBuf[2] & MOUSE_4DPLUS_ZNEG)
2293 			      ? ((pBuf[2] & 0x07) - 8) : (pBuf[2] & 0x07);
2294 	    } else {
2295 		/* preserve previous button states */
2296 		act->button |= act->obutton & MOUSE_EXTBUTTONS;
2297 	    }
2298 	    break;
2299 	case MOUSE_MODEL_GENERIC:
2300 	default:
2301 	    break;
2302 	}
2303 	break;
2304 
2305     case MOUSE_PROTO_SYSMOUSE:		/* sysmouse */
2306 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_SYS_STDBUTTONS];
2307 	act->dx =    (signed char)(pBuf[1]) + (signed char)(pBuf[3]);
2308 	act->dy = - ((signed char)(pBuf[2]) + (signed char)(pBuf[4]));
2309 	if (rodent.level == 1) {
2310 	    act->dz = ((signed char)(pBuf[5] << 1) + (signed char)(pBuf[6] << 1)) >> 1;
2311 	    act->button |= ((~pBuf[7] & MOUSE_SYS_EXTBUTTONS) << 3);
2312 	}
2313 	break;
2314 
2315     default:
2316 	return 0;
2317     }
2318     /*
2319      * We don't reset pBufP here yet, as there may be an additional data
2320      * byte in some protocols. See above.
2321      */
2322 
2323     /* has something changed? */
2324     act->flags = ((act->dx || act->dy || act->dz) ? MOUSE_POSCHANGED : 0)
2325 	| (act->obutton ^ act->button);
2326 
2327     return act->flags;
2328 }
2329 
2330 static int
2331 r_statetrans(mousestatus_t *a1, mousestatus_t *a2, int trans)
2332 {
2333     int changed;
2334     int flags;
2335 
2336     a2->dx = a1->dx;
2337     a2->dy = a1->dy;
2338     a2->dz = a1->dz;
2339     a2->obutton = a2->button;
2340     a2->button = a1->button;
2341     a2->flags = a1->flags;
2342     changed = FALSE;
2343 
2344     if (rodent.flags & Emulate3Button) {
2345 	if (debug > 2)
2346 	    debug("state:%d, trans:%d -> state:%d",
2347 		  mouse_button_state, trans,
2348 		  states[mouse_button_state].s[trans]);
2349 	/*
2350 	 * Avoid re-ordering button and movement events. While a button
2351 	 * event is deferred, throw away up to BUTTON2_MAXMOVE movement
2352 	 * events to allow for mouse jitter. If more movement events
2353 	 * occur, then complete the deferred button events immediately.
2354 	 */
2355 	if ((a2->dx != 0 || a2->dy != 0) &&
2356 	    S_DELAYED(states[mouse_button_state].s[trans])) {
2357 		if (++mouse_move_delayed > BUTTON2_MAXMOVE) {
2358 			mouse_move_delayed = 0;
2359 			mouse_button_state =
2360 			    states[mouse_button_state].s[A_TIMEOUT];
2361 			changed = TRUE;
2362 		} else
2363 			a2->dx = a2->dy = 0;
2364 	} else
2365 		mouse_move_delayed = 0;
2366 	if (mouse_button_state != states[mouse_button_state].s[trans])
2367 		changed = TRUE;
2368 	if (changed)
2369 		gettimeofday(&mouse_button_state_tv, NULL);
2370 	mouse_button_state = states[mouse_button_state].s[trans];
2371 	a2->button &=
2372 	    ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN);
2373 	a2->button &= states[mouse_button_state].mask;
2374 	a2->button |= states[mouse_button_state].buttons;
2375 	flags = a2->flags & MOUSE_POSCHANGED;
2376 	flags |= a2->obutton ^ a2->button;
2377 	if (flags & MOUSE_BUTTON2DOWN) {
2378 	    a2->flags = flags & MOUSE_BUTTON2DOWN;
2379 	    r_timestamp(a2);
2380 	}
2381 	a2->flags = flags;
2382     }
2383     return changed;
2384 }
2385 
2386 /* phisical to logical button mapping */
2387 static int p2l[MOUSE_MAXBUTTON] = {
2388     MOUSE_BUTTON1DOWN, MOUSE_BUTTON2DOWN, MOUSE_BUTTON3DOWN, MOUSE_BUTTON4DOWN,
2389     MOUSE_BUTTON5DOWN, MOUSE_BUTTON6DOWN, MOUSE_BUTTON7DOWN, MOUSE_BUTTON8DOWN,
2390     0x00000100,        0x00000200,        0x00000400,        0x00000800,
2391     0x00001000,        0x00002000,        0x00004000,        0x00008000,
2392     0x00010000,        0x00020000,        0x00040000,        0x00080000,
2393     0x00100000,        0x00200000,        0x00400000,        0x00800000,
2394     0x01000000,        0x02000000,        0x04000000,        0x08000000,
2395     0x10000000,        0x20000000,        0x40000000,
2396 };
2397 
2398 static char *
2399 skipspace(char *s)
2400 {
2401     while(isspace(*s))
2402 	++s;
2403     return s;
2404 }
2405 
2406 static int
2407 r_installmap(char *arg)
2408 {
2409     int pbutton;
2410     int lbutton;
2411     char *s;
2412 
2413     while (*arg) {
2414 	arg = skipspace(arg);
2415 	s = arg;
2416 	while (isdigit(*arg))
2417 	    ++arg;
2418 	arg = skipspace(arg);
2419 	if ((arg <= s) || (*arg != '='))
2420 	    return FALSE;
2421 	lbutton = atoi(s);
2422 
2423 	arg = skipspace(++arg);
2424 	s = arg;
2425 	while (isdigit(*arg))
2426 	    ++arg;
2427 	if ((arg <= s) || (!isspace(*arg) && (*arg != '\0')))
2428 	    return FALSE;
2429 	pbutton = atoi(s);
2430 
2431 	if ((lbutton <= 0) || (lbutton > MOUSE_MAXBUTTON))
2432 	    return FALSE;
2433 	if ((pbutton <= 0) || (pbutton > MOUSE_MAXBUTTON))
2434 	    return FALSE;
2435 	p2l[pbutton - 1] = 1 << (lbutton - 1);
2436 	mstate[lbutton - 1] = &bstate[pbutton - 1];
2437     }
2438 
2439     return TRUE;
2440 }
2441 
2442 static void
2443 r_map(mousestatus_t *act1, mousestatus_t *act2)
2444 {
2445     register int pb;
2446     register int pbuttons;
2447     int lbuttons;
2448 
2449     pbuttons = act1->button;
2450     lbuttons = 0;
2451 
2452     act2->obutton = act2->button;
2453     if (pbuttons & rodent.wmode) {
2454 	pbuttons &= ~rodent.wmode;
2455 	act1->dz = act1->dy;
2456 	act1->dx = 0;
2457 	act1->dy = 0;
2458     }
2459     act2->dx = act1->dx;
2460     act2->dy = act1->dy;
2461     act2->dz = act1->dz;
2462 
2463     switch (rodent.zmap[0]) {
2464     case 0:	/* do nothing */
2465 	break;
2466     case MOUSE_XAXIS:
2467 	if (act1->dz != 0) {
2468 	    act2->dx = act1->dz;
2469 	    act2->dz = 0;
2470 	}
2471 	break;
2472     case MOUSE_YAXIS:
2473 	if (act1->dz != 0) {
2474 	    act2->dy = act1->dz;
2475 	    act2->dz = 0;
2476 	}
2477 	break;
2478     default:	/* buttons */
2479 	pbuttons &= ~(rodent.zmap[0] | rodent.zmap[1]
2480 		    | rodent.zmap[2] | rodent.zmap[3]);
2481 	if ((act1->dz < -1) && rodent.zmap[2]) {
2482 	    pbuttons |= rodent.zmap[2];
2483 	    zstate[2].count = 1;
2484 	} else if (act1->dz < 0) {
2485 	    pbuttons |= rodent.zmap[0];
2486 	    zstate[0].count = 1;
2487 	} else if ((act1->dz > 1) && rodent.zmap[3]) {
2488 	    pbuttons |= rodent.zmap[3];
2489 	    zstate[3].count = 1;
2490 	} else if (act1->dz > 0) {
2491 	    pbuttons |= rodent.zmap[1];
2492 	    zstate[1].count = 1;
2493 	}
2494 	act2->dz = 0;
2495 	break;
2496     }
2497 
2498     for (pb = 0; (pb < MOUSE_MAXBUTTON) && (pbuttons != 0); ++pb) {
2499 	lbuttons |= (pbuttons & 1) ? p2l[pb] : 0;
2500 	pbuttons >>= 1;
2501     }
2502     act2->button = lbuttons;
2503 
2504     act2->flags = ((act2->dx || act2->dy || act2->dz) ? MOUSE_POSCHANGED : 0)
2505 	| (act2->obutton ^ act2->button);
2506 }
2507 
2508 static void
2509 r_timestamp(mousestatus_t *act)
2510 {
2511     struct timeval tv;
2512     struct timeval tv1;
2513     struct timeval tv2;
2514     struct timeval tv3;
2515     int button;
2516     int mask;
2517     int i;
2518 
2519     mask = act->flags & MOUSE_BUTTONS;
2520 #if 0
2521     if (mask == 0)
2522 	return;
2523 #endif
2524 
2525     gettimeofday(&tv1, NULL);
2526     drift_current_tv = tv1;
2527 
2528     /* double click threshold */
2529     tv2.tv_sec = rodent.clickthreshold/1000;
2530     tv2.tv_usec = (rodent.clickthreshold%1000)*1000;
2531     timersub(&tv1, &tv2, &tv);
2532     debug("tv:  %ld %ld", tv.tv_sec, tv.tv_usec);
2533 
2534     /* 3 button emulation timeout */
2535     tv2.tv_sec = rodent.button2timeout/1000;
2536     tv2.tv_usec = (rodent.button2timeout%1000)*1000;
2537     timersub(&tv1, &tv2, &tv3);
2538 
2539     button = MOUSE_BUTTON1DOWN;
2540     for (i = 0; (i < MOUSE_MAXBUTTON) && (mask != 0); ++i) {
2541 	if (mask & 1) {
2542 	    if (act->button & button) {
2543 		/* the button is down */
2544 		debug("  :  %ld %ld",
2545 		    bstate[i].tv.tv_sec, bstate[i].tv.tv_usec);
2546 		if (timercmp(&tv, &bstate[i].tv, >)) {
2547 		    bstate[i].count = 1;
2548 		} else {
2549 		    ++bstate[i].count;
2550 		}
2551 		bstate[i].tv = tv1;
2552 	    } else {
2553 		/* the button is up */
2554 		bstate[i].tv = tv1;
2555 	    }
2556 	} else {
2557 	    if (act->button & button) {
2558 		/* the button has been down */
2559 		if (timercmp(&tv3, &bstate[i].tv, >)) {
2560 		    bstate[i].count = 1;
2561 		    bstate[i].tv = tv1;
2562 		    act->flags |= button;
2563 		    debug("button %d timeout", i + 1);
2564 		}
2565 	    } else {
2566 		/* the button has been up */
2567 	    }
2568 	}
2569 	button <<= 1;
2570 	mask >>= 1;
2571     }
2572 }
2573 
2574 static int
2575 r_timeout(void)
2576 {
2577     struct timeval tv;
2578     struct timeval tv1;
2579     struct timeval tv2;
2580 
2581     if (states[mouse_button_state].timeout)
2582 	return TRUE;
2583     gettimeofday(&tv1, NULL);
2584     tv2.tv_sec = rodent.button2timeout/1000;
2585     tv2.tv_usec = (rodent.button2timeout%1000)*1000;
2586     timersub(&tv1, &tv2, &tv);
2587     return timercmp(&tv, &mouse_button_state_tv, >);
2588 }
2589 
2590 static void
2591 r_click(mousestatus_t *act)
2592 {
2593     struct mouse_info mouse;
2594     int button;
2595     int mask;
2596     int i;
2597 
2598     mask = act->flags & MOUSE_BUTTONS;
2599     if (mask == 0)
2600 	return;
2601 
2602     button = MOUSE_BUTTON1DOWN;
2603     for (i = 0; (i < MOUSE_MAXBUTTON) && (mask != 0); ++i) {
2604 	if (mask & 1) {
2605 	    debug("mstate[%d]->count:%d", i, mstate[i]->count);
2606 	    if (act->button & button) {
2607 		/* the button is down */
2608 		mouse.u.event.value = mstate[i]->count;
2609 	    } else {
2610 		/* the button is up */
2611 		mouse.u.event.value = 0;
2612 	    }
2613 	    mouse.operation = MOUSE_BUTTON_EVENT;
2614 	    mouse.u.event.id = button;
2615 	    if (debug < 2)
2616 		if (!paused)
2617 		    ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
2618 	    debug("button %d  count %d", i + 1, mouse.u.event.value);
2619 	}
2620 	button <<= 1;
2621 	mask >>= 1;
2622     }
2623 }
2624 
2625 /* $XConsortium: posix_tty.c,v 1.3 95/01/05 20:42:55 kaleb Exp $ */
2626 /* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/shared/posix_tty.c,v 3.4 1995/01/28 17:05:03 dawes Exp $ */
2627 /*
2628  * Copyright 1993 by David Dawes <dawes@physics.su.oz.au>
2629  *
2630  * Permission to use, copy, modify, distribute, and sell this software and its
2631  * documentation for any purpose is hereby granted without fee, provided that
2632  * the above copyright notice appear in all copies and that both that
2633  * copyright notice and this permission notice appear in supporting
2634  * documentation, and that the name of David Dawes
2635  * not be used in advertising or publicity pertaining to distribution of
2636  * the software without specific, written prior permission.
2637  * David Dawes makes no representations about the suitability of this
2638  * software for any purpose.  It is provided "as is" without express or
2639  * implied warranty.
2640  *
2641  * DAVID DAWES DISCLAIMS ALL WARRANTIES WITH REGARD TO
2642  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
2643  * FITNESS, IN NO EVENT SHALL DAVID DAWES BE LIABLE FOR
2644  * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
2645  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
2646  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
2647  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
2648  *
2649  */
2650 
2651 
2652 static void
2653 setmousespeed(int old, int new, unsigned cflag)
2654 {
2655 	struct termios tty;
2656 	char *c;
2657 
2658 	if (tcgetattr(rodent.mfd, &tty) < 0)
2659 	{
2660 		logwarn("unable to get status of mouse fd");
2661 		return;
2662 	}
2663 
2664 	tty.c_iflag = IGNBRK | IGNPAR;
2665 	tty.c_oflag = 0;
2666 	tty.c_lflag = 0;
2667 	tty.c_cflag = (tcflag_t)cflag;
2668 	tty.c_cc[VTIME] = 0;
2669 	tty.c_cc[VMIN] = 1;
2670 
2671 	switch (old)
2672 	{
2673 	case 9600:
2674 		cfsetispeed(&tty, B9600);
2675 		cfsetospeed(&tty, B9600);
2676 		break;
2677 	case 4800:
2678 		cfsetispeed(&tty, B4800);
2679 		cfsetospeed(&tty, B4800);
2680 		break;
2681 	case 2400:
2682 		cfsetispeed(&tty, B2400);
2683 		cfsetospeed(&tty, B2400);
2684 		break;
2685 	case 1200:
2686 	default:
2687 		cfsetispeed(&tty, B1200);
2688 		cfsetospeed(&tty, B1200);
2689 	}
2690 
2691 	if (tcsetattr(rodent.mfd, TCSADRAIN, &tty) < 0)
2692 	{
2693 		logwarn("unable to set status of mouse fd");
2694 		return;
2695 	}
2696 
2697 	switch (new)
2698 	{
2699 	case 9600:
2700 		c = "*q";
2701 		cfsetispeed(&tty, B9600);
2702 		cfsetospeed(&tty, B9600);
2703 		break;
2704 	case 4800:
2705 		c = "*p";
2706 		cfsetispeed(&tty, B4800);
2707 		cfsetospeed(&tty, B4800);
2708 		break;
2709 	case 2400:
2710 		c = "*o";
2711 		cfsetispeed(&tty, B2400);
2712 		cfsetospeed(&tty, B2400);
2713 		break;
2714 	case 1200:
2715 	default:
2716 		c = "*n";
2717 		cfsetispeed(&tty, B1200);
2718 		cfsetospeed(&tty, B1200);
2719 	}
2720 
2721 	if (rodent.rtype == MOUSE_PROTO_LOGIMOUSEMAN
2722 	    || rodent.rtype == MOUSE_PROTO_LOGI)
2723 	{
2724 		if (write(rodent.mfd, c, 2) != 2)
2725 		{
2726 			logwarn("unable to write to mouse fd");
2727 			return;
2728 		}
2729 	}
2730 	usleep(100000);
2731 
2732 	if (tcsetattr(rodent.mfd, TCSADRAIN, &tty) < 0)
2733 		logwarn("unable to set status of mouse fd");
2734 }
2735 
2736 /*
2737  * PnP COM device support
2738  *
2739  * It's a simplistic implementation, but it works :-)
2740  * KY, 31/7/97.
2741  */
2742 
2743 /*
2744  * Try to elicit a PnP ID as described in
2745  * Microsoft, Hayes: "Plug and Play External COM Device Specification,
2746  * rev 1.00", 1995.
2747  *
2748  * The routine does not fully implement the COM Enumerator as par Section
2749  * 2.1 of the document.  In particular, we don't have idle state in which
2750  * the driver software monitors the com port for dynamic connection or
2751  * removal of a device at the port, because `moused' simply quits if no
2752  * device is found.
2753  *
2754  * In addition, as PnP COM device enumeration procedure slightly has
2755  * changed since its first publication, devices which follow earlier
2756  * revisions of the above spec. may fail to respond if the rev 1.0
2757  * procedure is used. XXX
2758  */
2759 static int
2760 pnpwakeup1(void)
2761 {
2762     struct timeval timeout;
2763     fd_set fds;
2764     int i;
2765 
2766     /*
2767      * This is the procedure described in rev 1.0 of PnP COM device spec.
2768      * Unfortunately, some devices which comform to earlier revisions of
2769      * the spec gets confused and do not return the ID string...
2770      */
2771     debug("PnP COM device rev 1.0 probe...");
2772 
2773     /* port initialization (2.1.2) */
2774     ioctl(rodent.mfd, TIOCMGET, &i);
2775     i |= TIOCM_DTR;		/* DTR = 1 */
2776     i &= ~TIOCM_RTS;		/* RTS = 0 */
2777     ioctl(rodent.mfd, TIOCMSET, &i);
2778     usleep(240000);
2779 
2780     /*
2781      * The PnP COM device spec. dictates that the mouse must set DSR
2782      * in response to DTR (by hardware or by software) and that if DSR is
2783      * not asserted, the host computer should think that there is no device
2784      * at this serial port.  But some mice just don't do that...
2785      */
2786     ioctl(rodent.mfd, TIOCMGET, &i);
2787     debug("modem status 0%o", i);
2788     if ((i & TIOCM_DSR) == 0)
2789 	return FALSE;
2790 
2791     /* port setup, 1st phase (2.1.3) */
2792     setmousespeed(1200, 1200, (CS7 | CREAD | CLOCAL | HUPCL));
2793     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 0, RTS = 0 */
2794     ioctl(rodent.mfd, TIOCMBIC, &i);
2795     usleep(240000);
2796     i = TIOCM_DTR;		/* DTR = 1, RTS = 0 */
2797     ioctl(rodent.mfd, TIOCMBIS, &i);
2798     usleep(240000);
2799 
2800     /* wait for response, 1st phase (2.1.4) */
2801     i = FREAD;
2802     ioctl(rodent.mfd, TIOCFLUSH, &i);
2803     i = TIOCM_RTS;		/* DTR = 1, RTS = 1 */
2804     ioctl(rodent.mfd, TIOCMBIS, &i);
2805 
2806     /* try to read something */
2807     FD_ZERO(&fds);
2808     FD_SET(rodent.mfd, &fds);
2809     timeout.tv_sec = 0;
2810     timeout.tv_usec = 240000;
2811     if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) {
2812 	debug("pnpwakeup1(): valid response in first phase.");
2813 	return TRUE;
2814     }
2815 
2816     /* port setup, 2nd phase (2.1.5) */
2817     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 0, RTS = 0 */
2818     ioctl(rodent.mfd, TIOCMBIC, &i);
2819     usleep(240000);
2820 
2821     /* wait for respose, 2nd phase (2.1.6) */
2822     i = FREAD;
2823     ioctl(rodent.mfd, TIOCFLUSH, &i);
2824     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 1, RTS = 1 */
2825     ioctl(rodent.mfd, TIOCMBIS, &i);
2826 
2827     /* try to read something */
2828     FD_ZERO(&fds);
2829     FD_SET(rodent.mfd, &fds);
2830     timeout.tv_sec = 0;
2831     timeout.tv_usec = 240000;
2832     if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) {
2833 	debug("pnpwakeup1(): valid response in second phase.");
2834 	return TRUE;
2835     }
2836 
2837     return FALSE;
2838 }
2839 
2840 static int
2841 pnpwakeup2(void)
2842 {
2843     struct timeval timeout;
2844     fd_set fds;
2845     int i;
2846 
2847     /*
2848      * This is a simplified procedure; it simply toggles RTS.
2849      */
2850     debug("alternate probe...");
2851 
2852     ioctl(rodent.mfd, TIOCMGET, &i);
2853     i |= TIOCM_DTR;		/* DTR = 1 */
2854     i &= ~TIOCM_RTS;		/* RTS = 0 */
2855     ioctl(rodent.mfd, TIOCMSET, &i);
2856     usleep(240000);
2857 
2858     setmousespeed(1200, 1200, (CS7 | CREAD | CLOCAL | HUPCL));
2859 
2860     /* wait for respose */
2861     i = FREAD;
2862     ioctl(rodent.mfd, TIOCFLUSH, &i);
2863     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 1, RTS = 1 */
2864     ioctl(rodent.mfd, TIOCMBIS, &i);
2865 
2866     /* try to read something */
2867     FD_ZERO(&fds);
2868     FD_SET(rodent.mfd, &fds);
2869     timeout.tv_sec = 0;
2870     timeout.tv_usec = 240000;
2871     if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) {
2872 	debug("pnpwakeup2(): valid response.");
2873 	return TRUE;
2874     }
2875 
2876     return FALSE;
2877 }
2878 
2879 static int
2880 pnpgets(char *buf)
2881 {
2882     struct timeval timeout;
2883     fd_set fds;
2884     int begin;
2885     int i;
2886     char c;
2887 
2888     if (!pnpwakeup1() && !pnpwakeup2()) {
2889 	/*
2890 	 * According to PnP spec, we should set DTR = 1 and RTS = 0 while
2891 	 * in idle state.  But, `moused' shall set DTR = RTS = 1 and proceed,
2892 	 * assuming there is something at the port even if it didn't
2893 	 * respond to the PnP enumeration procedure.
2894 	 */
2895 	i = TIOCM_DTR | TIOCM_RTS;		/* DTR = 1, RTS = 1 */
2896 	ioctl(rodent.mfd, TIOCMBIS, &i);
2897 	return 0;
2898     }
2899 
2900     /* collect PnP COM device ID (2.1.7) */
2901     begin = -1;
2902     i = 0;
2903     usleep(240000);	/* the mouse must send `Begin ID' within 200msec */
2904     while (read(rodent.mfd, &c, 1) == 1) {
2905 	/* we may see "M", or "M3..." before `Begin ID' */
2906 	buf[i++] = c;
2907 	if ((c == 0x08) || (c == 0x28)) {	/* Begin ID */
2908 	    debug("begin-id %02x", c);
2909 	    begin = i - 1;
2910 	    break;
2911 	}
2912 	debug("%c %02x", c, c);
2913 	if (i >= 256)
2914 	    break;
2915     }
2916     if (begin < 0) {
2917 	/* we haven't seen `Begin ID' in time... */
2918 	goto connect_idle;
2919     }
2920 
2921     ++c;			/* make it `End ID' */
2922     for (;;) {
2923 	FD_ZERO(&fds);
2924 	FD_SET(rodent.mfd, &fds);
2925 	timeout.tv_sec = 0;
2926 	timeout.tv_usec = 240000;
2927 	if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) <= 0)
2928 	    break;
2929 
2930 	read(rodent.mfd, &buf[i], 1);
2931 	if (buf[i++] == c)	/* End ID */
2932 	    break;
2933 	if (i >= 256)
2934 	    break;
2935     }
2936     if (begin > 0) {
2937 	i -= begin;
2938 	bcopy(&buf[begin], &buf[0], i);
2939     }
2940     /* string may not be human readable... */
2941     debug("len:%d, '%-*.*s'", i, i, i, buf);
2942 
2943     if (buf[i - 1] == c)
2944 	return i;		/* a valid PnP string */
2945 
2946     /*
2947      * According to PnP spec, we should set DTR = 1 and RTS = 0 while
2948      * in idle state.  But, `moused' shall leave the modem control lines
2949      * as they are. See above.
2950      */
2951 connect_idle:
2952 
2953     /* we may still have something in the buffer */
2954     return ((i > 0) ? i : 0);
2955 }
2956 
2957 static int
2958 pnpparse(pnpid_t *id, char *buf, int len)
2959 {
2960     char s[3];
2961     int offset;
2962     int sum = 0;
2963     int i, j;
2964 
2965     id->revision = 0;
2966     id->eisaid = NULL;
2967     id->serial = NULL;
2968     id->class = NULL;
2969     id->compat = NULL;
2970     id->description = NULL;
2971     id->neisaid = 0;
2972     id->nserial = 0;
2973     id->nclass = 0;
2974     id->ncompat = 0;
2975     id->ndescription = 0;
2976 
2977     if ((buf[0] != 0x28) && (buf[0] != 0x08)) {
2978 	/* non-PnP mice */
2979 	switch(buf[0]) {
2980 	default:
2981 	    return FALSE;
2982 	case 'M': /* Microsoft */
2983 	    id->eisaid = "PNP0F01";
2984 	    break;
2985 	case 'H': /* MouseSystems */
2986 	    id->eisaid = "PNP0F04";
2987 	    break;
2988 	}
2989 	id->neisaid = strlen(id->eisaid);
2990 	id->class = "MOUSE";
2991 	id->nclass = strlen(id->class);
2992 	debug("non-PnP mouse '%c'", buf[0]);
2993 	return TRUE;
2994     }
2995 
2996     /* PnP mice */
2997     offset = 0x28 - buf[0];
2998 
2999     /* calculate checksum */
3000     for (i = 0; i < len - 3; ++i) {
3001 	sum += buf[i];
3002 	buf[i] += offset;
3003     }
3004     sum += buf[len - 1];
3005     for (; i < len; ++i)
3006 	buf[i] += offset;
3007     debug("PnP ID string: '%*.*s'", len, len, buf);
3008 
3009     /* revision */
3010     buf[1] -= offset;
3011     buf[2] -= offset;
3012     id->revision = ((buf[1] & 0x3f) << 6) | (buf[2] & 0x3f);
3013     debug("PnP rev %d.%02d", id->revision / 100, id->revision % 100);
3014 
3015     /* EISA vender and product ID */
3016     id->eisaid = &buf[3];
3017     id->neisaid = 7;
3018 
3019     /* option strings */
3020     i = 10;
3021     if (buf[i] == '\\') {
3022 	/* device serial # */
3023 	for (j = ++i; i < len; ++i) {
3024 	    if (buf[i] == '\\')
3025 		break;
3026 	}
3027 	if (i >= len)
3028 	    i -= 3;
3029 	if (i - j == 8) {
3030 	    id->serial = &buf[j];
3031 	    id->nserial = 8;
3032 	}
3033     }
3034     if (buf[i] == '\\') {
3035 	/* PnP class */
3036 	for (j = ++i; i < len; ++i) {
3037 	    if (buf[i] == '\\')
3038 		break;
3039 	}
3040 	if (i >= len)
3041 	    i -= 3;
3042 	if (i > j + 1) {
3043 	    id->class = &buf[j];
3044 	    id->nclass = i - j;
3045 	}
3046     }
3047     if (buf[i] == '\\') {
3048 	/* compatible driver */
3049 	for (j = ++i; i < len; ++i) {
3050 	    if (buf[i] == '\\')
3051 		break;
3052 	}
3053 	/*
3054 	 * PnP COM spec prior to v0.96 allowed '*' in this field,
3055 	 * it's not allowed now; just igore it.
3056 	 */
3057 	if (buf[j] == '*')
3058 	    ++j;
3059 	if (i >= len)
3060 	    i -= 3;
3061 	if (i > j + 1) {
3062 	    id->compat = &buf[j];
3063 	    id->ncompat = i - j;
3064 	}
3065     }
3066     if (buf[i] == '\\') {
3067 	/* product description */
3068 	for (j = ++i; i < len; ++i) {
3069 	    if (buf[i] == ';')
3070 		break;
3071 	}
3072 	if (i >= len)
3073 	    i -= 3;
3074 	if (i > j + 1) {
3075 	    id->description = &buf[j];
3076 	    id->ndescription = i - j;
3077 	}
3078     }
3079 
3080     /* checksum exists if there are any optional fields */
3081     if ((id->nserial > 0) || (id->nclass > 0)
3082 	|| (id->ncompat > 0) || (id->ndescription > 0)) {
3083 	debug("PnP checksum: 0x%X", sum);
3084 	sprintf(s, "%02X", sum & 0x0ff);
3085 	if (strncmp(s, &buf[len - 3], 2) != 0) {
3086 #if 0
3087 	    /*
3088 	     * I found some mice do not comply with the PnP COM device
3089 	     * spec regarding checksum... XXX
3090 	     */
3091 	    logwarnx("PnP checksum error", 0);
3092 	    return FALSE;
3093 #endif
3094 	}
3095     }
3096 
3097     return TRUE;
3098 }
3099 
3100 static symtab_t *
3101 pnpproto(pnpid_t *id)
3102 {
3103     symtab_t *t;
3104     int i, j;
3105 
3106     if (id->nclass > 0)
3107 	if (strncmp(id->class, "MOUSE", id->nclass) != 0 &&
3108 	    strncmp(id->class, "TABLET", id->nclass) != 0)
3109 	    /* this is not a mouse! */
3110 	    return NULL;
3111 
3112     if (id->neisaid > 0) {
3113 	t = gettoken(pnpprod, id->eisaid, id->neisaid);
3114 	if (t->val != MOUSE_PROTO_UNKNOWN)
3115 	    return t;
3116     }
3117 
3118     /*
3119      * The 'Compatible drivers' field may contain more than one
3120      * ID separated by ','.
3121      */
3122     if (id->ncompat <= 0)
3123 	return NULL;
3124     for (i = 0; i < id->ncompat; ++i) {
3125 	for (j = i; id->compat[i] != ','; ++i)
3126 	    if (i >= id->ncompat)
3127 		break;
3128 	if (i > j) {
3129 	    t = gettoken(pnpprod, id->compat + j, i - j);
3130 	    if (t->val != MOUSE_PROTO_UNKNOWN)
3131 		return t;
3132 	}
3133     }
3134 
3135     return NULL;
3136 }
3137 
3138 /* name/val mapping */
3139 
3140 static symtab_t *
3141 gettoken(symtab_t *tab, char *s, int len)
3142 {
3143     int i;
3144 
3145     for (i = 0; tab[i].name != NULL; ++i) {
3146 	if (strncmp(tab[i].name, s, len) == 0)
3147 	    break;
3148     }
3149     return &tab[i];
3150 }
3151 
3152 static char *
3153 gettokenname(symtab_t *tab, int val)
3154 {
3155     int i;
3156 
3157     for (i = 0; tab[i].name != NULL; ++i) {
3158 	if (tab[i].val == val)
3159 	    return tab[i].name;
3160     }
3161     return NULL;
3162 }
3163 
3164 
3165 /*
3166  * code to read from the Genius Kidspad tablet.
3167 
3168 The tablet responds to the COM PnP protocol 1.0 with EISA-ID KYE0005,
3169 and to pre-pnp probes (RTS toggle) with 'T' (tablet ?)
3170 9600, 8 bit, parity odd.
3171 
3172 The tablet puts out 5 bytes. b0 (mask 0xb8, value 0xb8) contains
3173 the proximity, tip and button info:
3174    (byte0 & 0x1)	true = tip pressed
3175    (byte0 & 0x2)	true = button pressed
3176    (byte0 & 0x40)	false = pen in proximity of tablet.
3177 
3178 The next 4 bytes are used for coordinates xl, xh, yl, yh (7 bits valid).
3179 
3180 Only absolute coordinates are returned, so we use the following approach:
3181 we store the last coordinates sent when the pen went out of the tablet,
3182 
3183 
3184  *
3185  */
3186 
3187 typedef enum {
3188     S_IDLE, S_PROXY, S_FIRST, S_DOWN, S_UP
3189 } k_status ;
3190 
3191 static int
3192 kidspad(u_char rxc, mousestatus_t *act)
3193 {
3194     static int buf[5];
3195     static int buflen = 0, b_prev = 0 , x_prev = -1, y_prev = -1 ;
3196     static k_status status = S_IDLE ;
3197     static struct timeval old, now ;
3198 
3199     int x, y ;
3200 
3201     if (buflen > 0 && (rxc & 0x80)) {
3202 	fprintf(stderr, "invalid code %d 0x%x\n", buflen, rxc);
3203 	buflen = 0 ;
3204     }
3205     if (buflen == 0 && (rxc & 0xb8) != 0xb8) {
3206 	fprintf(stderr, "invalid code 0 0x%x\n", rxc);
3207 	return 0 ; /* invalid code, no action */
3208     }
3209     buf[buflen++] = rxc ;
3210     if (buflen < 5)
3211 	return 0 ;
3212 
3213     buflen = 0 ; /* for next time... */
3214 
3215     x = buf[1]+128*(buf[2] - 7) ;
3216     if (x < 0) x = 0 ;
3217     y = 28*128 - (buf[3] + 128* (buf[4] - 7)) ;
3218     if (y < 0) y = 0 ;
3219 
3220     x /= 8 ;
3221     y /= 8 ;
3222 
3223     act->flags = 0 ;
3224     act->obutton = act->button ;
3225     act->dx = act->dy = act->dz = 0 ;
3226     gettimeofday(&now, NULL);
3227     if (buf[0] & 0x40) /* pen went out of reach */
3228 	status = S_IDLE ;
3229     else if (status == S_IDLE) { /* pen is newly near the tablet */
3230 	act->flags |= MOUSE_POSCHANGED ; /* force update */
3231 	status = S_PROXY ;
3232 	x_prev = x ;
3233 	y_prev = y ;
3234     }
3235     old = now ;
3236     act->dx = x - x_prev ;
3237     act->dy = y - y_prev ;
3238     if (act->dx || act->dy)
3239 	act->flags |= MOUSE_POSCHANGED ;
3240     x_prev = x ;
3241     y_prev = y ;
3242     if (b_prev != 0 && b_prev != buf[0]) { /* possibly record button change */
3243 	act->button = 0 ;
3244 	if (buf[0] & 0x01) /* tip pressed */
3245 	    act->button |= MOUSE_BUTTON1DOWN ;
3246 	if (buf[0] & 0x02) /* button pressed */
3247 	    act->button |= MOUSE_BUTTON2DOWN ;
3248 	act->flags |= MOUSE_BUTTONSCHANGED ;
3249     }
3250     b_prev = buf[0] ;
3251     return act->flags ;
3252 }
3253 
3254 static int
3255 gtco_digipad (u_char rxc, mousestatus_t *act)
3256 {
3257 	static u_char buf[5];
3258  	static int buflen = 0, b_prev = 0 , x_prev = -1, y_prev = -1 ;
3259 	static k_status status = S_IDLE ;
3260         int x, y;
3261 
3262 #define	GTCO_HEADER	0x80
3263 #define	GTCO_PROXIMITY	0x40
3264 #define	GTCO_START	(GTCO_HEADER|GTCO_PROXIMITY)
3265 #define	GTCO_BUTTONMASK	0x3c
3266 
3267 
3268 	if (buflen > 0 && ((rxc & GTCO_HEADER) != GTCO_HEADER)) {
3269 		fprintf(stderr, "invalid code %d 0x%x\n", buflen, rxc);
3270 		buflen = 0 ;
3271 	}
3272 	if (buflen == 0 && (rxc & GTCO_START) != GTCO_START) {
3273 		fprintf(stderr, "invalid code 0 0x%x\n", rxc);
3274 		return 0 ; /* invalid code, no action */
3275 	}
3276 
3277 	buf[buflen++] = rxc ;
3278 	if (buflen < 5)
3279 		return 0 ;
3280 
3281 	buflen = 0 ; /* for next time... */
3282 
3283 	x = ((buf[2] & ~GTCO_START) << 6 | (buf[1] & ~GTCO_START));
3284 	y = 4768 - ((buf[4] & ~GTCO_START) << 6 | (buf[3] & ~GTCO_START));
3285 
3286 	x /= 2.5;
3287 	y /= 2.5;
3288 
3289 	act->flags = 0 ;
3290 	act->obutton = act->button ;
3291 	act->dx = act->dy = act->dz = 0 ;
3292 
3293 	if ((buf[0] & 0x40) == 0) /* pen went out of reach */
3294 		status = S_IDLE ;
3295 	else if (status == S_IDLE) { /* pen is newly near the tablet */
3296 		act->flags |= MOUSE_POSCHANGED ; /* force update */
3297 		status = S_PROXY ;
3298 		x_prev = x ;
3299 		y_prev = y ;
3300 	}
3301 
3302 	act->dx = x - x_prev ;
3303 	act->dy = y - y_prev ;
3304 	if (act->dx || act->dy)
3305 		act->flags |= MOUSE_POSCHANGED ;
3306 	x_prev = x ;
3307 	y_prev = y ;
3308 
3309 	/* possibly record button change */
3310 	if (b_prev != 0 && b_prev != buf[0]) {
3311 		act->button = 0 ;
3312 		if (buf[0] & 0x04) /* tip pressed/yellow */
3313 			act->button |= MOUSE_BUTTON1DOWN ;
3314 		if (buf[0] & 0x08) /* grey/white */
3315 			act->button |= MOUSE_BUTTON2DOWN ;
3316 		if (buf[0] & 0x10) /* black/green */
3317 			act->button |= MOUSE_BUTTON3DOWN ;
3318 		if (buf[0] & 0x20) /* tip+grey/blue */
3319 			act->button |= MOUSE_BUTTON4DOWN ;
3320 		act->flags |= MOUSE_BUTTONSCHANGED ;
3321 	}
3322 	b_prev = buf[0] ;
3323 	return act->flags ;
3324 }
3325 
3326 static void
3327 mremote_serversetup()
3328 {
3329     struct sockaddr_un ad;
3330 
3331     /* Open a UNIX domain stream socket to listen for mouse remote clients */
3332     unlink(_PATH_MOUSEREMOTE);
3333 
3334     if ((rodent.mremsfd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
3335 	logerrx(1, "unable to create unix domain socket %s",_PATH_MOUSEREMOTE);
3336 
3337     umask(0111);
3338 
3339     bzero(&ad, sizeof(ad));
3340     ad.sun_family = AF_UNIX;
3341     strcpy(ad.sun_path, _PATH_MOUSEREMOTE);
3342 #ifndef SUN_LEN
3343 #define SUN_LEN(unp) (((char *)(unp)->sun_path - (char *)(unp)) + \
3344 		       strlen((unp)->path))
3345 #endif
3346     if (bind(rodent.mremsfd, (struct sockaddr *) &ad, SUN_LEN(&ad)) < 0)
3347 	logerrx(1, "unable to bind unix domain socket %s", _PATH_MOUSEREMOTE);
3348 
3349     listen(rodent.mremsfd, 1);
3350 }
3351 
3352 static void
3353 mremote_clientchg(int add)
3354 {
3355     struct sockaddr_un ad;
3356     int ad_len, fd;
3357 
3358     if (rodent.rtype != MOUSE_PROTO_X10MOUSEREM)
3359 	return;
3360 
3361     if (add) {
3362 	/*  Accept client connection, if we don't already have one  */
3363 	ad_len = sizeof(ad);
3364 	fd = accept(rodent.mremsfd, (struct sockaddr *) &ad, &ad_len);
3365 	if (fd < 0)
3366 	    logwarnx("failed accept on mouse remote socket");
3367 
3368 	if (rodent.mremcfd < 0) {
3369 	    rodent.mremcfd = fd;
3370 	    debug("remote client connect...accepted");
3371 	}
3372 	else {
3373 	    close(fd);
3374 	    debug("another remote client connect...disconnected");
3375 	}
3376     }
3377     else {
3378 	/* Client disconnected */
3379 	debug("remote client disconnected");
3380 	close(rodent.mremcfd);
3381 	rodent.mremcfd = -1;
3382     }
3383 }
3384