xref: /freebsd/usr.sbin/moused/moused.c (revision a68654e6)
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 
74 #define MAX_CLICKTHRESHOLD	2000	/* 2 seconds */
75 #define MAX_BUTTON2TIMEOUT	2000	/* 2 seconds */
76 #define DFLT_CLICKTHRESHOLD	 500	/* 0.5 second */
77 #define DFLT_BUTTON2TIMEOUT	 100	/* 0.1 second */
78 #define DFLT_SCROLLTHRESHOLD	   3	/* 3 pixels */
79 
80 /* Abort 3-button emulation delay after this many movement events. */
81 #define BUTTON2_MAXMOVE	3
82 
83 #define TRUE		1
84 #define FALSE		0
85 
86 #define MOUSE_XAXIS	(-1)
87 #define MOUSE_YAXIS	(-2)
88 
89 /* Logitech PS2++ protocol */
90 #define MOUSE_PS2PLUS_CHECKBITS(b)	\
91 			((((b[2] & 0x03) << 2) | 0x02) == (b[1] & 0x0f))
92 #define MOUSE_PS2PLUS_PACKET_TYPE(b)	\
93 			(((b[0] & 0x30) >> 2) | ((b[1] & 0x30) >> 4))
94 
95 #define	ChordMiddle	0x0001
96 #define Emulate3Button	0x0002
97 #define ClearDTR	0x0004
98 #define ClearRTS	0x0008
99 #define NoPnP		0x0010
100 #define VirtualScroll	0x0020
101 #define HVirtualScroll	0x0040
102 
103 #define ID_NONE		0
104 #define ID_PORT		1
105 #define ID_IF		2
106 #define ID_TYPE		4
107 #define ID_MODEL	8
108 #define ID_ALL		(ID_PORT | ID_IF | ID_TYPE | ID_MODEL)
109 
110 #define debug(...) do {						\
111 	if (debug && nodaemon)					\
112 		warnx(__VA_ARGS__);				\
113 } while (0)
114 
115 #define logerr(e, ...) do {					\
116 	log_or_warn(LOG_DAEMON | LOG_ERR, errno, __VA_ARGS__);	\
117 	exit(e);						\
118 } while (0)
119 
120 #define logerrx(e, ...) do {					\
121 	log_or_warn(LOG_DAEMON | LOG_ERR, 0, __VA_ARGS__);	\
122 	exit(e);						\
123 } while (0)
124 
125 #define logwarn(...)						\
126 	log_or_warn(LOG_DAEMON | LOG_WARNING, errno, __VA_ARGS__)
127 
128 #define logwarnx(...)						\
129 	log_or_warn(LOG_DAEMON | LOG_WARNING, 0, __VA_ARGS__)
130 
131 /* structures */
132 
133 /* symbol table entry */
134 typedef struct {
135     char *name;
136     int val;
137     int val2;
138 } symtab_t;
139 
140 /* serial PnP ID string */
141 typedef struct {
142     int revision;	/* PnP revision, 100 for 1.00 */
143     char *eisaid;	/* EISA ID including mfr ID and product ID */
144     char *serial;	/* serial No, optional */
145     char *class;	/* device class, optional */
146     char *compat;	/* list of compatible drivers, optional */
147     char *description;	/* product description, optional */
148     int neisaid;	/* length of the above fields... */
149     int nserial;
150     int nclass;
151     int ncompat;
152     int ndescription;
153 } pnpid_t;
154 
155 /* global variables */
156 
157 int	debug = 0;
158 int	nodaemon = FALSE;
159 int	background = FALSE;
160 int	paused = FALSE;
161 int	identify = ID_NONE;
162 int	extioctl = FALSE;
163 char	*pidfile = "/var/run/moused.pid";
164 struct pidfh *pfh;
165 
166 #define SCROLL_NOTSCROLLING	0
167 #define SCROLL_PREPARE		1
168 #define SCROLL_SCROLLING	2
169 
170 static int	scroll_state;
171 static int	scroll_movement;
172 static int	hscroll_movement;
173 
174 /* local variables */
175 
176 /* interface (the table must be ordered by MOUSE_IF_XXX in mouse.h) */
177 static symtab_t rifs[] = {
178     { "serial",		MOUSE_IF_SERIAL },
179     { "bus",		MOUSE_IF_BUS },
180     { "inport",		MOUSE_IF_INPORT },
181     { "ps/2",		MOUSE_IF_PS2 },
182     { "sysmouse",	MOUSE_IF_SYSMOUSE },
183     { "usb",		MOUSE_IF_USB },
184     { NULL,		MOUSE_IF_UNKNOWN },
185 };
186 
187 /* types (the table must be ordered by MOUSE_PROTO_XXX in mouse.h) */
188 static char *rnames[] = {
189     "microsoft",
190     "mousesystems",
191     "logitech",
192     "mmseries",
193     "mouseman",
194     "busmouse",
195     "inportmouse",
196     "ps/2",
197     "mmhitab",
198     "glidepoint",
199     "intellimouse",
200     "thinkingmouse",
201     "sysmouse",
202     "x10mouseremote",
203     "kidspad",
204     "versapad",
205     "jogdial",
206 #if notyet
207     "mariqua",
208 #endif
209     "gtco_digipad",
210     NULL
211 };
212 
213 /* models */
214 static symtab_t	rmodels[] = {
215     { "NetScroll",		MOUSE_MODEL_NETSCROLL },
216     { "NetMouse/NetScroll Optical", MOUSE_MODEL_NET },
217     { "GlidePoint",		MOUSE_MODEL_GLIDEPOINT },
218     { "ThinkingMouse",		MOUSE_MODEL_THINK },
219     { "IntelliMouse",		MOUSE_MODEL_INTELLI },
220     { "EasyScroll/SmartScroll",	MOUSE_MODEL_EASYSCROLL },
221     { "MouseMan+",		MOUSE_MODEL_MOUSEMANPLUS },
222     { "Kidspad",		MOUSE_MODEL_KIDSPAD },
223     { "VersaPad",		MOUSE_MODEL_VERSAPAD },
224     { "IntelliMouse Explorer",	MOUSE_MODEL_EXPLORER },
225     { "4D Mouse",		MOUSE_MODEL_4D },
226     { "4D+ Mouse",		MOUSE_MODEL_4DPLUS },
227     { "Synaptics Touchpad",	MOUSE_MODEL_SYNAPTICS },
228     { "generic",		MOUSE_MODEL_GENERIC },
229     { NULL,			MOUSE_MODEL_UNKNOWN },
230 };
231 
232 /* PnP EISA/product IDs */
233 static symtab_t pnpprod[] = {
234     /* Kensignton ThinkingMouse */
235     { "KML0001",	MOUSE_PROTO_THINK,	MOUSE_MODEL_THINK },
236     /* MS IntelliMouse */
237     { "MSH0001",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
238     /* MS IntelliMouse TrackBall */
239     { "MSH0004",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
240     /* Tremon Wheel Mouse MUSD */
241     { "HTK0001",        MOUSE_PROTO_INTELLI,    MOUSE_MODEL_INTELLI },
242     /* Genius PnP Mouse */
243     { "KYE0001",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
244     /* MouseSystems SmartScroll Mouse (OEM from Genius?) */
245     { "KYE0002",	MOUSE_PROTO_MS,		MOUSE_MODEL_EASYSCROLL },
246     /* Genius NetMouse */
247     { "KYE0003",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_NET },
248     /* Genius Kidspad, Easypad and other tablets */
249     { "KYE0005",	MOUSE_PROTO_KIDSPAD,	MOUSE_MODEL_KIDSPAD },
250     /* Genius EZScroll */
251     { "KYEEZ00",	MOUSE_PROTO_MS,		MOUSE_MODEL_EASYSCROLL },
252     /* Logitech Cordless MouseMan Wheel */
253     { "LGI8033",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
254     /* Logitech MouseMan (new 4 button model) */
255     { "LGI800C",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
256     /* Logitech MouseMan+ */
257     { "LGI8050",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
258     /* Logitech FirstMouse+ */
259     { "LGI8051",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
260     /* Logitech serial */
261     { "LGI8001",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
262     /* A4 Tech 4D/4D+ Mouse */
263     { "A4W0005",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_4D },
264     /* 8D Scroll Mouse */
265     { "PEC9802",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
266     /* Mitsumi Wireless Scroll Mouse */
267     { "MTM6401",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
268 
269     /* MS bus */
270     { "PNP0F00",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
271     /* MS serial */
272     { "PNP0F01",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
273     /* MS InPort */
274     { "PNP0F02",	MOUSE_PROTO_INPORT,	MOUSE_MODEL_GENERIC },
275     /* MS PS/2 */
276     { "PNP0F03",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
277     /*
278      * EzScroll returns PNP0F04 in the compatible device field; but it
279      * doesn't look compatible... XXX
280      */
281     /* MouseSystems */
282     { "PNP0F04",	MOUSE_PROTO_MSC,	MOUSE_MODEL_GENERIC },
283     /* MouseSystems */
284     { "PNP0F05",	MOUSE_PROTO_MSC,	MOUSE_MODEL_GENERIC },
285 #if notyet
286     /* Genius Mouse */
287     { "PNP0F06",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
288     /* Genius Mouse */
289     { "PNP0F07",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
290 #endif
291     /* Logitech serial */
292     { "PNP0F08",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
293     /* MS BallPoint serial */
294     { "PNP0F09",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
295     /* MS PnP serial */
296     { "PNP0F0A",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
297     /* MS PnP BallPoint serial */
298     { "PNP0F0B",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
299     /* MS serial comatible */
300     { "PNP0F0C",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
301     /* MS InPort comatible */
302     { "PNP0F0D",	MOUSE_PROTO_INPORT,	MOUSE_MODEL_GENERIC },
303     /* MS PS/2 comatible */
304     { "PNP0F0E",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
305     /* MS BallPoint comatible */
306     { "PNP0F0F",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
307 #if notyet
308     /* TI QuickPort */
309     { "PNP0F10",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
310 #endif
311     /* MS bus comatible */
312     { "PNP0F11",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
313     /* Logitech PS/2 */
314     { "PNP0F12",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
315     /* PS/2 */
316     { "PNP0F13",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
317 #if notyet
318     /* MS Kids Mouse */
319     { "PNP0F14",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
320 #endif
321     /* Logitech bus */
322     { "PNP0F15",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
323 #if notyet
324     /* Logitech SWIFT */
325     { "PNP0F16",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
326 #endif
327     /* Logitech serial compat */
328     { "PNP0F17",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
329     /* Logitech bus compatible */
330     { "PNP0F18",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
331     /* Logitech PS/2 compatible */
332     { "PNP0F19",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
333 #if notyet
334     /* Logitech SWIFT compatible */
335     { "PNP0F1A",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
336     /* HP Omnibook */
337     { "PNP0F1B",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
338     /* Compaq LTE TrackBall PS/2 */
339     { "PNP0F1C",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
340     /* Compaq LTE TrackBall serial */
341     { "PNP0F1D",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
342     /* MS Kidts Trackball */
343     { "PNP0F1E",	MOUSE_PROTO_XXX,	MOUSE_MODEL_GENERIC },
344 #endif
345     /* Interlink VersaPad */
346     { "LNK0001",	MOUSE_PROTO_VERSAPAD,	MOUSE_MODEL_VERSAPAD },
347 
348     { NULL,		MOUSE_PROTO_UNKNOWN,	MOUSE_MODEL_GENERIC },
349 };
350 
351 /* the table must be ordered by MOUSE_PROTO_XXX in mouse.h */
352 static unsigned short rodentcflags[] =
353 {
354     (CS7	           | CREAD | CLOCAL | HUPCL),	/* MicroSoft */
355     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL),	/* MouseSystems */
356     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL),	/* Logitech */
357     (CS8 | PARENB | PARODD | CREAD | CLOCAL | HUPCL),	/* MMSeries */
358     (CS7		   | CREAD | CLOCAL | HUPCL),	/* MouseMan */
359     0,							/* Bus */
360     0,							/* InPort */
361     0,							/* PS/2 */
362     (CS8		   | CREAD | CLOCAL | HUPCL),	/* MM HitTablet */
363     (CS7	           | CREAD | CLOCAL | HUPCL),	/* GlidePoint */
364     (CS7                   | CREAD | CLOCAL | HUPCL),	/* IntelliMouse */
365     (CS7                   | CREAD | CLOCAL | HUPCL),	/* Thinking Mouse */
366     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL),	/* sysmouse */
367     (CS7	           | CREAD | CLOCAL | HUPCL),	/* X10 MouseRemote */
368     (CS8 | PARENB | PARODD | CREAD | CLOCAL | HUPCL),	/* kidspad etc. */
369     (CS8		   | CREAD | CLOCAL | HUPCL),	/* VersaPad */
370     0,							/* JogDial */
371 #if notyet
372     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL),	/* Mariqua */
373 #endif
374     (CS8		   | CREAD |	      HUPCL ),	/* GTCO Digi-Pad */
375 };
376 
377 static struct rodentparam {
378     int flags;
379     char *portname;		/* /dev/XXX */
380     int rtype;			/* MOUSE_PROTO_XXX */
381     int level;			/* operation level: 0 or greater */
382     int baudrate;
383     int rate;			/* report rate */
384     int resolution;		/* MOUSE_RES_XXX or a positive number */
385     int zmap[4];		/* MOUSE_{X|Y}AXIS or a button number */
386     int wmode;			/* wheel mode button number */
387     int mfd;			/* mouse file descriptor */
388     int cfd;			/* /dev/consolectl file descriptor */
389     int mremsfd;		/* mouse remote server file descriptor */
390     int mremcfd;		/* mouse remote client file descriptor */
391     long clickthreshold;	/* double click speed in msec */
392     long button2timeout;	/* 3 button emulation timeout */
393     mousehw_t hw;		/* mouse device hardware information */
394     mousemode_t mode;		/* protocol information */
395     float accelx;		/* Acceleration in the X axis */
396     float accely;		/* Acceleration in the Y axis */
397     int scrollthreshold;	/* Movement distance before virtual scrolling */
398 } rodent = {
399     .flags = 0,
400     .portname = NULL,
401     .rtype = MOUSE_PROTO_UNKNOWN,
402     .level = -1,
403     .baudrate = 1200,
404     .rate = 0,
405     .resolution = MOUSE_RES_UNKNOWN,
406     .zmap = { 0, 0, 0, 0 },
407     .wmode = 0,
408     .mfd = -1,
409     .cfd = -1,
410     .mremsfd = -1,
411     .mremcfd = -1,
412     .clickthreshold = DFLT_CLICKTHRESHOLD,
413     .button2timeout = DFLT_BUTTON2TIMEOUT,
414     .accelx = 1.0,
415     .accely = 1.0,
416     .scrollthreshold = DFLT_SCROLLTHRESHOLD,
417 };
418 
419 /* button status */
420 struct button_state {
421     int count;		/* 0: up, 1: single click, 2: double click,... */
422     struct timeval tv;	/* timestamp on the last button event */
423 };
424 static struct button_state	bstate[MOUSE_MAXBUTTON]; /* button state */
425 static struct button_state	*mstate[MOUSE_MAXBUTTON];/* mapped button st.*/
426 static struct button_state	zstate[4];		 /* Z/W axis state */
427 
428 /* state machine for 3 button emulation */
429 
430 #define S0	0	/* start */
431 #define S1	1	/* button 1 delayed down */
432 #define S2	2	/* button 3 delayed down */
433 #define S3	3	/* both buttons down -> button 2 down */
434 #define S4	4	/* button 1 delayed up */
435 #define S5	5	/* button 1 down */
436 #define S6	6	/* button 3 down */
437 #define S7	7	/* both buttons down */
438 #define S8	8	/* button 3 delayed up */
439 #define S9	9	/* button 1 or 3 up after S3 */
440 
441 #define A(b1, b3)	(((b1) ? 2 : 0) | ((b3) ? 1 : 0))
442 #define A_TIMEOUT	4
443 #define S_DELAYED(st)	(states[st].s[A_TIMEOUT] != (st))
444 
445 static struct {
446     int s[A_TIMEOUT + 1];
447     int buttons;
448     int mask;
449     int timeout;
450 } states[10] = {
451     /* S0 */
452     { { S0, S2, S1, S3, S0 }, 0, ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN), FALSE },
453     /* S1 */
454     { { S4, S2, S1, S3, S5 }, 0, ~MOUSE_BUTTON1DOWN, FALSE },
455     /* S2 */
456     { { S8, S2, S1, S3, S6 }, 0, ~MOUSE_BUTTON3DOWN, FALSE },
457     /* S3 */
458     { { S0, S9, S9, S3, S3 }, MOUSE_BUTTON2DOWN, ~0, FALSE },
459     /* S4 */
460     { { S0, S2, S1, S3, S0 }, MOUSE_BUTTON1DOWN, ~0, TRUE },
461     /* S5 */
462     { { S0, S2, S5, S7, S5 }, MOUSE_BUTTON1DOWN, ~0, FALSE },
463     /* S6 */
464     { { S0, S6, S1, S7, S6 }, MOUSE_BUTTON3DOWN, ~0, FALSE },
465     /* S7 */
466     { { S0, S6, S5, S7, S7 }, MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN, ~0, FALSE },
467     /* S8 */
468     { { S0, S2, S1, S3, S0 }, MOUSE_BUTTON3DOWN, ~0, TRUE },
469     /* S9 */
470     { { S0, S9, S9, S3, S9 }, 0, ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN), FALSE },
471 };
472 static int		mouse_button_state;
473 static struct timeval	mouse_button_state_tv;
474 static int		mouse_move_delayed;
475 
476 static jmp_buf env;
477 
478 static int		drift_distance = 4;   /* max steps X+Y */
479 static int		drift_time = 500;   /* in 0.5 sec */
480 static struct timeval	drift_time_tv;
481 static struct timeval	drift_2time_tv;   /* 2*drift_time */
482 static int		drift_after = 4000;   /* 4 sec */
483 static struct timeval	drift_after_tv;
484 static int		drift_terminate = FALSE;
485 static struct timeval	drift_current_tv;
486 static struct timeval	drift_tmp;
487 static struct timeval	drift_last_activity = {0,0};
488 static struct drift_xy {
489 	int x; int y; }	drift_last = {0,0};   /* steps in last drift_time */
490 static struct timeval	drift_since = {0,0};
491 static struct drift_xy  drift_previous={0,0}; /* steps in previous drift_time */
492 
493 /* function prototypes */
494 
495 static void	moused(void);
496 static void	hup(int sig);
497 static void	cleanup(int sig);
498 static void	pause_mouse(int sig);
499 static void	usage(void);
500 static void	log_or_warn(int log_pri, int errnum, const char *fmt, ...)
501 		    __printflike(3, 4);
502 
503 static int	r_identify(void);
504 static char	*r_if(int type);
505 static char	*r_name(int type);
506 static char	*r_model(int model);
507 static void	r_init(void);
508 static int	r_protocol(u_char b, mousestatus_t *act);
509 static int	r_statetrans(mousestatus_t *a1, mousestatus_t *a2, int trans);
510 static int	r_installmap(char *arg);
511 static void	r_map(mousestatus_t *act1, mousestatus_t *act2);
512 static void	r_timestamp(mousestatus_t *act);
513 static int	r_timeout(void);
514 static void	r_click(mousestatus_t *act);
515 static void	setmousespeed(int old, int new, unsigned cflag);
516 
517 static int	pnpwakeup1(void);
518 static int	pnpwakeup2(void);
519 static int	pnpgets(char *buf);
520 static int	pnpparse(pnpid_t *id, char *buf, int len);
521 static symtab_t	*pnpproto(pnpid_t *id);
522 
523 static symtab_t	*gettoken(symtab_t *tab, char *s, int len);
524 static char	*gettokenname(symtab_t *tab, int val);
525 
526 static void	mremote_serversetup();
527 static void	mremote_clientchg(int add);
528 
529 static int	kidspad(u_char rxc, mousestatus_t *act);
530 static int	gtco_digipad(u_char, mousestatus_t *);
531 
532 static int	usbmodule(void);
533 
534 int
535 main(int argc, char *argv[])
536 {
537     int c;
538     int	i;
539     int	j;
540     int retry;
541 
542     for (i = 0; i < MOUSE_MAXBUTTON; ++i)
543 	mstate[i] = &bstate[i];
544 
545     while ((c = getopt(argc, argv, "3C:DE:F:HI:PRS:T:VU:a:cdfhi:l:m:p:r:st:w:z:")) != -1)
546 	switch(c) {
547 
548 	case '3':
549 	    rodent.flags |= Emulate3Button;
550 	    break;
551 
552 	case 'E':
553 	    rodent.button2timeout = atoi(optarg);
554 	    if ((rodent.button2timeout < 0) ||
555 		(rodent.button2timeout > MAX_BUTTON2TIMEOUT)) {
556 		warnx("invalid argument `%s'", optarg);
557 		usage();
558 	    }
559 	    break;
560 
561 	case 'a':
562 	    i = sscanf(optarg, "%f,%f", &rodent.accelx, &rodent.accely);
563 	    if (i == 0) {
564 		warnx("invalid acceleration argument '%s'", optarg);
565 		usage();
566 	    }
567 
568 	    if (i == 1)
569 		rodent.accely = rodent.accelx;
570 
571 	    break;
572 
573 	case 'c':
574 	    rodent.flags |= ChordMiddle;
575 	    break;
576 
577 	case 'd':
578 	    ++debug;
579 	    break;
580 
581 	case 'f':
582 	    nodaemon = TRUE;
583 	    break;
584 
585 	case 'i':
586 	    if (strcmp(optarg, "all") == 0)
587 		identify = ID_ALL;
588 	    else if (strcmp(optarg, "port") == 0)
589 		identify = ID_PORT;
590 	    else if (strcmp(optarg, "if") == 0)
591 		identify = ID_IF;
592 	    else if (strcmp(optarg, "type") == 0)
593 		identify = ID_TYPE;
594 	    else if (strcmp(optarg, "model") == 0)
595 		identify = ID_MODEL;
596 	    else {
597 		warnx("invalid argument `%s'", optarg);
598 		usage();
599 	    }
600 	    nodaemon = TRUE;
601 	    break;
602 
603 	case 'l':
604 	    rodent.level = atoi(optarg);
605 	    if ((rodent.level < 0) || (rodent.level > 4)) {
606 		warnx("invalid argument `%s'", optarg);
607 		usage();
608 	    }
609 	    break;
610 
611 	case 'm':
612 	    if (!r_installmap(optarg)) {
613 		warnx("invalid argument `%s'", optarg);
614 		usage();
615 	    }
616 	    break;
617 
618 	case 'p':
619 	    rodent.portname = optarg;
620 	    break;
621 
622 	case 'r':
623 	    if (strcmp(optarg, "high") == 0)
624 		rodent.resolution = MOUSE_RES_HIGH;
625 	    else if (strcmp(optarg, "medium-high") == 0)
626 		rodent.resolution = MOUSE_RES_HIGH;
627 	    else if (strcmp(optarg, "medium-low") == 0)
628 		rodent.resolution = MOUSE_RES_MEDIUMLOW;
629 	    else if (strcmp(optarg, "low") == 0)
630 		rodent.resolution = MOUSE_RES_LOW;
631 	    else if (strcmp(optarg, "default") == 0)
632 		rodent.resolution = MOUSE_RES_DEFAULT;
633 	    else {
634 		rodent.resolution = atoi(optarg);
635 		if (rodent.resolution <= 0) {
636 		    warnx("invalid argument `%s'", optarg);
637 		    usage();
638 		}
639 	    }
640 	    break;
641 
642 	case 's':
643 	    rodent.baudrate = 9600;
644 	    break;
645 
646 	case 'w':
647 	    i = atoi(optarg);
648 	    if ((i <= 0) || (i > MOUSE_MAXBUTTON)) {
649 		warnx("invalid argument `%s'", optarg);
650 		usage();
651 	    }
652 	    rodent.wmode = 1 << (i - 1);
653 	    break;
654 
655 	case 'z':
656 	    if (strcmp(optarg, "x") == 0)
657 		rodent.zmap[0] = MOUSE_XAXIS;
658 	    else if (strcmp(optarg, "y") == 0)
659 		rodent.zmap[0] = MOUSE_YAXIS;
660 	    else {
661 		i = atoi(optarg);
662 		/*
663 		 * Use button i for negative Z axis movement and
664 		 * button (i + 1) for positive Z axis movement.
665 		 */
666 		if ((i <= 0) || (i > MOUSE_MAXBUTTON - 1)) {
667 		    warnx("invalid argument `%s'", optarg);
668 		    usage();
669 		}
670 		rodent.zmap[0] = i;
671 		rodent.zmap[1] = i + 1;
672 		debug("optind: %d, optarg: '%s'", optind, optarg);
673 		for (j = 1; j < 4; ++j) {
674 		    if ((optind >= argc) || !isdigit(*argv[optind]))
675 			break;
676 		    i = atoi(argv[optind]);
677 		    if ((i <= 0) || (i > MOUSE_MAXBUTTON - 1)) {
678 			warnx("invalid argument `%s'", argv[optind]);
679 			usage();
680 		    }
681 		    rodent.zmap[j] = i;
682 		    ++optind;
683 		}
684 		if ((rodent.zmap[2] != 0) && (rodent.zmap[3] == 0))
685 		    rodent.zmap[3] = rodent.zmap[2] + 1;
686 	    }
687 	    break;
688 
689 	case 'C':
690 	    rodent.clickthreshold = atoi(optarg);
691 	    if ((rodent.clickthreshold < 0) ||
692 		(rodent.clickthreshold > MAX_CLICKTHRESHOLD)) {
693 		warnx("invalid argument `%s'", optarg);
694 		usage();
695 	    }
696 	    break;
697 
698 	case 'D':
699 	    rodent.flags |= ClearDTR;
700 	    break;
701 
702 	case 'F':
703 	    rodent.rate = atoi(optarg);
704 	    if (rodent.rate <= 0) {
705 		warnx("invalid argument `%s'", optarg);
706 		usage();
707 	    }
708 	    break;
709 
710 	case 'H':
711 	    rodent.flags |= HVirtualScroll;
712 	    break;
713 
714 	case 'I':
715 	    pidfile = optarg;
716 	    break;
717 
718 	case 'P':
719 	    rodent.flags |= NoPnP;
720 	    break;
721 
722 	case 'R':
723 	    rodent.flags |= ClearRTS;
724 	    break;
725 
726 	case 'S':
727 	    rodent.baudrate = atoi(optarg);
728 	    if (rodent.baudrate <= 0) {
729 		warnx("invalid argument `%s'", optarg);
730 		usage();
731 	    }
732 	    debug("rodent baudrate %d", rodent.baudrate);
733 	    break;
734 
735 	case 'T':
736 	    drift_terminate = TRUE;
737 	    sscanf(optarg, "%d,%d,%d", &drift_distance, &drift_time,
738 		&drift_after);
739 	    if (drift_distance <= 0 || drift_time <= 0 || drift_after <= 0) {
740 		warnx("invalid argument `%s'", optarg);
741 		usage();
742 	    }
743 	    debug("terminate drift: distance %d, time %d, after %d",
744 		drift_distance, drift_time, drift_after);
745 	    drift_time_tv.tv_sec = drift_time/1000;
746 	    drift_time_tv.tv_usec = (drift_time%1000)*1000;
747  	    drift_2time_tv.tv_sec = (drift_time*=2)/1000;
748 	    drift_2time_tv.tv_usec = (drift_time%1000)*1000;
749 	    drift_after_tv.tv_sec = drift_after/1000;
750 	    drift_after_tv.tv_usec = (drift_after%1000)*1000;
751 	    break;
752 
753 	case 't':
754 	    if (strcmp(optarg, "auto") == 0) {
755 		rodent.rtype = MOUSE_PROTO_UNKNOWN;
756 		rodent.flags &= ~NoPnP;
757 		rodent.level = -1;
758 		break;
759 	    }
760 	    for (i = 0; rnames[i]; i++)
761 		if (strcmp(optarg, rnames[i]) == 0) {
762 		    rodent.rtype = i;
763 		    rodent.flags |= NoPnP;
764 		    rodent.level = (i == MOUSE_PROTO_SYSMOUSE) ? 1 : 0;
765 		    break;
766 		}
767 	    if (rnames[i])
768 		break;
769 	    warnx("no such mouse type `%s'", optarg);
770 	    usage();
771 
772 	case 'V':
773 	    rodent.flags |= VirtualScroll;
774 	    break;
775 	case 'U':
776 	    rodent.scrollthreshold = atoi(optarg);
777 	    if (rodent.scrollthreshold < 0) {
778 		warnx("invalid argument `%s'", optarg);
779 		usage();
780 	    }
781 	    break;
782 
783 	case 'h':
784 	case '?':
785 	default:
786 	    usage();
787 	}
788 
789     /* fix Z axis mapping */
790     for (i = 0; i < 4; ++i) {
791 	if (rodent.zmap[i] > 0) {
792 	    for (j = 0; j < MOUSE_MAXBUTTON; ++j) {
793 		if (mstate[j] == &bstate[rodent.zmap[i] - 1])
794 		    mstate[j] = &zstate[i];
795 	    }
796 	    rodent.zmap[i] = 1 << (rodent.zmap[i] - 1);
797 	}
798     }
799 
800     /* the default port name */
801     switch(rodent.rtype) {
802 
803     case MOUSE_PROTO_INPORT:
804 	/* INPORT and BUS are the same... */
805 	rodent.rtype = MOUSE_PROTO_BUS;
806 	/* FALLTHROUGH */
807     case MOUSE_PROTO_BUS:
808 	if (!rodent.portname)
809 	    rodent.portname = "/dev/mse0";
810 	break;
811 
812     case MOUSE_PROTO_PS2:
813 	if (!rodent.portname)
814 	    rodent.portname = "/dev/psm0";
815 	break;
816 
817     default:
818 	if (rodent.portname)
819 	    break;
820 	warnx("no port name specified");
821 	usage();
822     }
823 
824     retry = 1;
825     if (strncmp(rodent.portname, "/dev/ums", 8) == 0) {
826 	if (usbmodule() != 0)
827 	    retry = 5;
828     }
829 
830     for (;;) {
831 	if (setjmp(env) == 0) {
832 	    signal(SIGHUP, hup);
833 	    signal(SIGINT , cleanup);
834 	    signal(SIGQUIT, cleanup);
835 	    signal(SIGTERM, cleanup);
836 	    signal(SIGUSR1, pause_mouse);
837 	    for (i = 0; i < retry; ++i) {
838 		if (i > 0)
839 		    sleep(2);
840 		rodent.mfd = open(rodent.portname, O_RDWR | O_NONBLOCK);
841 		if (rodent.mfd != -1 || errno != ENOENT)
842 		    break;
843 	    }
844 	    if (rodent.mfd == -1)
845 		logerr(1, "unable to open %s", rodent.portname);
846 	    if (r_identify() == MOUSE_PROTO_UNKNOWN) {
847 		logwarnx("cannot determine mouse type on %s", rodent.portname);
848 		close(rodent.mfd);
849 		rodent.mfd = -1;
850 	    }
851 
852 	    /* print some information */
853 	    if (identify != ID_NONE) {
854 		if (identify == ID_ALL)
855 		    printf("%s %s %s %s\n",
856 			rodent.portname, r_if(rodent.hw.iftype),
857 			r_name(rodent.rtype), r_model(rodent.hw.model));
858 		else if (identify & ID_PORT)
859 		    printf("%s\n", rodent.portname);
860 		else if (identify & ID_IF)
861 		    printf("%s\n", r_if(rodent.hw.iftype));
862 		else if (identify & ID_TYPE)
863 		    printf("%s\n", r_name(rodent.rtype));
864 		else if (identify & ID_MODEL)
865 		    printf("%s\n", r_model(rodent.hw.model));
866 		exit(0);
867 	    } else {
868 		debug("port: %s  interface: %s  type: %s  model: %s",
869 		    rodent.portname, r_if(rodent.hw.iftype),
870 		    r_name(rodent.rtype), r_model(rodent.hw.model));
871 	    }
872 
873 	    if (rodent.mfd == -1) {
874 		/*
875 		 * We cannot continue because of error.  Exit if the
876 		 * program has not become a daemon.  Otherwise, block
877 		 * until the the user corrects the problem and issues SIGHUP.
878 		 */
879 		if (!background)
880 		    exit(1);
881 		sigpause(0);
882 	    }
883 
884 	    r_init();			/* call init function */
885 	    moused();
886 	}
887 
888 	if (rodent.mfd != -1)
889 	    close(rodent.mfd);
890 	if (rodent.cfd != -1)
891 	    close(rodent.cfd);
892 	rodent.mfd = rodent.cfd = -1;
893     }
894     /* NOT REACHED */
895 
896     exit(0);
897 }
898 
899 static int
900 usbmodule(void)
901 {
902     return (kld_isloaded("uhub/ums") || kld_load("ums") != -1);
903 }
904 
905 static void
906 moused(void)
907 {
908     struct mouse_info mouse;
909     mousestatus_t action0;		/* original mouse action */
910     mousestatus_t action;		/* interrim buffer */
911     mousestatus_t action2;		/* mapped action */
912     struct timeval timeout;
913     fd_set fds;
914     u_char b;
915     pid_t mpid;
916     int flags;
917     int c;
918     int i;
919 
920     if ((rodent.cfd = open("/dev/consolectl", O_RDWR, 0)) == -1)
921 	logerr(1, "cannot open /dev/consolectl");
922 
923     if (!nodaemon && !background) {
924 	pfh = pidfile_open(pidfile, 0600, &mpid);
925 	if (pfh == NULL) {
926 	    if (errno == EEXIST)
927 		logerrx(1, "moused already running, pid: %d", mpid);
928 	    logwarn("cannot open pid file");
929 	}
930 	if (daemon(0, 0)) {
931 	    int saved_errno = errno;
932 	    pidfile_remove(pfh);
933 	    errno = saved_errno;
934 	    logerr(1, "failed to become a daemon");
935 	} else {
936 	    background = TRUE;
937 	    pidfile_write(pfh);
938 	}
939     }
940 
941     /* clear mouse data */
942     bzero(&action0, sizeof(action0));
943     bzero(&action, sizeof(action));
944     bzero(&action2, sizeof(action2));
945     bzero(&mouse, sizeof(mouse));
946     mouse_button_state = S0;
947     gettimeofday(&mouse_button_state_tv, NULL);
948     mouse_move_delayed = 0;
949     for (i = 0; i < MOUSE_MAXBUTTON; ++i) {
950 	bstate[i].count = 0;
951 	bstate[i].tv = mouse_button_state_tv;
952     }
953     for (i = 0; i < sizeof(zstate)/sizeof(zstate[0]); ++i) {
954 	zstate[i].count = 0;
955 	zstate[i].tv = mouse_button_state_tv;
956     }
957 
958     /* choose which ioctl command to use */
959     mouse.operation = MOUSE_MOTION_EVENT;
960     extioctl = (ioctl(rodent.cfd, CONS_MOUSECTL, &mouse) == 0);
961 
962     /* process mouse data */
963     timeout.tv_sec = 0;
964     timeout.tv_usec = 20000;		/* 20 msec */
965     for (;;) {
966 
967 	FD_ZERO(&fds);
968 	FD_SET(rodent.mfd, &fds);
969 	if (rodent.mremsfd >= 0)
970 	    FD_SET(rodent.mremsfd, &fds);
971 	if (rodent.mremcfd >= 0)
972 	    FD_SET(rodent.mremcfd, &fds);
973 
974 	c = select(FD_SETSIZE, &fds, NULL, NULL,
975 		   (rodent.flags & Emulate3Button) ? &timeout : NULL);
976 	if (c < 0) {                    /* error */
977 	    logwarn("failed to read from mouse");
978 	    continue;
979 	} else if (c == 0) {            /* timeout */
980 	    /* assert(rodent.flags & Emulate3Button) */
981 	    action0.button = action0.obutton;
982 	    action0.dx = action0.dy = action0.dz = 0;
983 	    action0.flags = flags = 0;
984 	    if (r_timeout() && r_statetrans(&action0, &action, A_TIMEOUT)) {
985 		if (debug > 2)
986 		    debug("flags:%08x buttons:%08x obuttons:%08x",
987 			  action.flags, action.button, action.obutton);
988 	    } else {
989 		action0.obutton = action0.button;
990 		continue;
991 	    }
992 	} else {
993 	    /*  MouseRemote client connect/disconnect  */
994 	    if ((rodent.mremsfd >= 0) && FD_ISSET(rodent.mremsfd, &fds)) {
995 		mremote_clientchg(TRUE);
996 		continue;
997 	    }
998 	    if ((rodent.mremcfd >= 0) && FD_ISSET(rodent.mremcfd, &fds)) {
999 		mremote_clientchg(FALSE);
1000 		continue;
1001 	    }
1002 	    /* mouse movement */
1003 	    if (read(rodent.mfd, &b, 1) == -1) {
1004 		if (errno == EWOULDBLOCK)
1005 		    continue;
1006 		else
1007 		    return;
1008 	    }
1009 	    if ((flags = r_protocol(b, &action0)) == 0)
1010 		continue;
1011 
1012 	    if ((rodent.flags & VirtualScroll) || (rodent.flags & HVirtualScroll)) {
1013 		/* Allow middle button drags to scroll up and down */
1014 		if (action0.button == MOUSE_BUTTON2DOWN) {
1015 		    if (scroll_state == SCROLL_NOTSCROLLING) {
1016 			scroll_state = SCROLL_PREPARE;
1017 			debug("PREPARING TO SCROLL");
1018 		    }
1019 		    debug("[BUTTON2] flags:%08x buttons:%08x obuttons:%08x",
1020 			  action.flags, action.button, action.obutton);
1021 		} else {
1022 		    debug("[NOTBUTTON2] flags:%08x buttons:%08x obuttons:%08x",
1023 			  action.flags, action.button, action.obutton);
1024 
1025 		    /* This isn't a middle button down... move along... */
1026 		    if (scroll_state == SCROLL_SCROLLING) {
1027 			/*
1028 			 * We were scrolling, someone let go of button 2.
1029 			 * Now turn autoscroll off.
1030 			 */
1031 			scroll_state = SCROLL_NOTSCROLLING;
1032 			debug("DONE WITH SCROLLING / %d", scroll_state);
1033 		    } else if (scroll_state == SCROLL_PREPARE) {
1034 			mousestatus_t newaction = action0;
1035 
1036 			/* We were preparing to scroll, but we never moved... */
1037 			r_timestamp(&action0);
1038 			r_statetrans(&action0, &newaction,
1039 				     A(newaction.button & MOUSE_BUTTON1DOWN,
1040 				       action0.button & MOUSE_BUTTON3DOWN));
1041 
1042 			/* Send middle down */
1043 			newaction.button = MOUSE_BUTTON2DOWN;
1044 			r_click(&newaction);
1045 
1046 			/* Send middle up */
1047 			r_timestamp(&newaction);
1048 			newaction.obutton = newaction.button;
1049 			newaction.button = action0.button;
1050 			r_click(&newaction);
1051 		    }
1052 		}
1053 	    }
1054 
1055 	    r_timestamp(&action0);
1056 	    r_statetrans(&action0, &action,
1057 			 A(action0.button & MOUSE_BUTTON1DOWN,
1058 			   action0.button & MOUSE_BUTTON3DOWN));
1059 	    debug("flags:%08x buttons:%08x obuttons:%08x", action.flags,
1060 		  action.button, action.obutton);
1061 	}
1062 	action0.obutton = action0.button;
1063 	flags &= MOUSE_POSCHANGED;
1064 	flags |= action.obutton ^ action.button;
1065 	action.flags = flags;
1066 
1067 	if (flags) {			/* handler detected action */
1068 	    r_map(&action, &action2);
1069 	    debug("activity : buttons 0x%08x  dx %d  dy %d  dz %d",
1070 		action2.button, action2.dx, action2.dy, action2.dz);
1071 
1072 	    if ((rodent.flags & VirtualScroll) || (rodent.flags & HVirtualScroll)) {
1073 		/*
1074 		 * If *only* the middle button is pressed AND we are moving
1075 		 * the stick/trackpoint/nipple, scroll!
1076 		 */
1077 		if (scroll_state == SCROLL_PREPARE) {
1078 		    /* Ok, Set we're really scrolling now.... */
1079 		    if (action2.dy || action2.dx)
1080 			scroll_state = SCROLL_SCROLLING;
1081 		}
1082 		if (scroll_state == SCROLL_SCROLLING) {
1083 			 if (rodent.flags & VirtualScroll) {
1084 				 scroll_movement += action2.dy;
1085 				 debug("SCROLL: %d", scroll_movement);
1086 
1087 			    if (scroll_movement < -rodent.scrollthreshold) {
1088 				/* Scroll down */
1089 				action2.dz = -1;
1090 				scroll_movement = 0;
1091 			    }
1092 			    else if (scroll_movement > rodent.scrollthreshold) {
1093 				/* Scroll up */
1094 				action2.dz = 1;
1095 				scroll_movement = 0;
1096 			    }
1097 			 }
1098 			 if (rodent.flags & HVirtualScroll) {
1099 				 hscroll_movement += action2.dx;
1100 				 debug("HORIZONTAL SCROLL: %d", hscroll_movement);
1101 
1102 				 if (hscroll_movement < -rodent.scrollthreshold) {
1103 					 action2.dz = -2;
1104 					 hscroll_movement = 0;
1105 				 }
1106 				 else if (hscroll_movement > rodent.scrollthreshold) {
1107 					 action2.dz = 2;
1108 					 hscroll_movement = 0;
1109 				 }
1110 			 }
1111 
1112 		    /* Don't move while scrolling */
1113 		    action2.dx = action2.dy = 0;
1114 		}
1115 	    }
1116 
1117 	    if (drift_terminate) {
1118 		if (flags != MOUSE_POSCHANGED || action.dz || action2.dz)
1119 		    drift_last_activity = drift_current_tv;
1120 		else {
1121 		    /* X or/and Y movement only - possibly drift */
1122 		    timersub(&drift_current_tv,&drift_last_activity,&drift_tmp);
1123 		    if (timercmp(&drift_tmp, &drift_after_tv, >)) {
1124 			timersub(&drift_current_tv, &drift_since, &drift_tmp);
1125 			if (timercmp(&drift_tmp, &drift_time_tv, <)) {
1126 			    drift_last.x += action2.dx;
1127 			    drift_last.y += action2.dy;
1128 			} else {
1129 			    /* discard old accumulated steps (drift) */
1130 			    if (timercmp(&drift_tmp, &drift_2time_tv, >))
1131 				drift_previous.x = drift_previous.y = 0;
1132 			    else
1133 				drift_previous = drift_last;
1134 			    drift_last.x = action2.dx;
1135 			    drift_last.y = action2.dy;
1136 			    drift_since = drift_current_tv;
1137 			}
1138 			if (abs(drift_last.x) + abs(drift_last.y)
1139 			  > drift_distance) {
1140 			    /* real movement, pass all accumulated steps */
1141 			    action2.dx = drift_previous.x + drift_last.x;
1142 			    action2.dy = drift_previous.y + drift_last.y;
1143 			    /* and reset accumulators */
1144 			    timerclear(&drift_since);
1145 			    drift_last.x = drift_last.y = 0;
1146 			    /* drift_previous will be cleared at next movement*/
1147 			    drift_last_activity = drift_current_tv;
1148 			} else {
1149 			    continue;   /* don't pass current movement to
1150 					 * console driver */
1151 			}
1152 		    }
1153 		}
1154 	    }
1155 
1156 	    if (extioctl) {
1157 		/* Defer clicks until we aren't VirtualScroll'ing. */
1158 		if (scroll_state == SCROLL_NOTSCROLLING)
1159 		    r_click(&action2);
1160 
1161 		if (action2.flags & MOUSE_POSCHANGED) {
1162 		    mouse.operation = MOUSE_MOTION_EVENT;
1163 		    mouse.u.data.buttons = action2.button;
1164 		    mouse.u.data.x = action2.dx * rodent.accelx;
1165 		    mouse.u.data.y = action2.dy * rodent.accely;
1166 		    mouse.u.data.z = action2.dz;
1167 		    if (debug < 2)
1168 			if (!paused)
1169 				ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
1170 		}
1171 	    } else {
1172 		mouse.operation = MOUSE_ACTION;
1173 		mouse.u.data.buttons = action2.button;
1174 		mouse.u.data.x = action2.dx * rodent.accelx;
1175 		mouse.u.data.y = action2.dy * rodent.accely;
1176 		mouse.u.data.z = action2.dz;
1177 		if (debug < 2)
1178 		    if (!paused)
1179 			ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
1180 	    }
1181 
1182 	    /*
1183 	     * If the Z axis movement is mapped to an imaginary physical
1184 	     * button, we need to cook up a corresponding button `up' event
1185 	     * after sending a button `down' event.
1186 	     */
1187 	    if ((rodent.zmap[0] > 0) && (action.dz != 0)) {
1188 		action.obutton = action.button;
1189 		action.dx = action.dy = action.dz = 0;
1190 		r_map(&action, &action2);
1191 		debug("activity : buttons 0x%08x  dx %d  dy %d  dz %d",
1192 		    action2.button, action2.dx, action2.dy, action2.dz);
1193 
1194 		if (extioctl) {
1195 		    r_click(&action2);
1196 		} else {
1197 		    mouse.operation = MOUSE_ACTION;
1198 		    mouse.u.data.buttons = action2.button;
1199 		    mouse.u.data.x = mouse.u.data.y = mouse.u.data.z = 0;
1200 		    if (debug < 2)
1201 			if (!paused)
1202 			    ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
1203 		}
1204 	    }
1205 	}
1206     }
1207     /* NOT REACHED */
1208 }
1209 
1210 static void
1211 hup(int sig)
1212 {
1213     longjmp(env, 1);
1214 }
1215 
1216 static void
1217 cleanup(int sig)
1218 {
1219     if (rodent.rtype == MOUSE_PROTO_X10MOUSEREM)
1220 	unlink(_PATH_MOUSEREMOTE);
1221     exit(0);
1222 }
1223 
1224 static void
1225 pause_mouse(int sig)
1226 {
1227     paused = !paused;
1228 }
1229 
1230 /**
1231  ** usage
1232  **
1233  ** Complain, and free the CPU for more worthy tasks
1234  **/
1235 static void
1236 usage(void)
1237 {
1238     fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n",
1239 	"usage: moused [-DRcdfs] [-I file] [-F rate] [-r resolution] [-S baudrate]",
1240 	"              [-VH [-U threshold]] [-a X[,Y]] [-C threshold] [-m N=M] [-w N]",
1241 	"              [-z N] [-t <mousetype>] [-l level] [-3 [-E timeout]]",
1242 	"              [-T distance[,time[,after]]] -p <port>",
1243 	"       moused [-d] -i <port|if|type|model|all> -p <port>");
1244     exit(1);
1245 }
1246 
1247 /*
1248  * Output an error message to syslog or stderr as appropriate. If
1249  * `errnum' is non-zero, append its string form to the message.
1250  */
1251 static void
1252 log_or_warn(int log_pri, int errnum, const char *fmt, ...)
1253 {
1254 	va_list ap;
1255 	char buf[256];
1256 
1257 	va_start(ap, fmt);
1258 	vsnprintf(buf, sizeof(buf), fmt, ap);
1259 	va_end(ap);
1260 	if (errnum) {
1261 		strlcat(buf, ": ", sizeof(buf));
1262 		strlcat(buf, strerror(errnum), sizeof(buf));
1263 	}
1264 
1265 	if (background)
1266 		syslog(log_pri, "%s", buf);
1267 	else
1268 		warnx("%s", buf);
1269 }
1270 
1271 /**
1272  ** Mouse interface code, courtesy of XFree86 3.1.2.
1273  **
1274  ** Note: Various bits have been trimmed, and in my shortsighted enthusiasm
1275  ** to clean, reformat and rationalise naming, it's quite possible that
1276  ** some things in here have been broken.
1277  **
1278  ** I hope not 8)
1279  **
1280  ** The following code is derived from a module marked :
1281  **/
1282 
1283 /* $XConsortium: xf86_Mouse.c,v 1.2 94/10/12 20:33:21 kaleb Exp $ */
1284 /* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86_Mouse.c,v 3.2 1995/01/28
1285  17:03:40 dawes Exp $ */
1286 /*
1287  *
1288  * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
1289  * Copyright 1993 by David Dawes <dawes@physics.su.oz.au>
1290  *
1291  * Permission to use, copy, modify, distribute, and sell this software and its
1292  * documentation for any purpose is hereby granted without fee, provided that
1293  * the above copyright notice appear in all copies and that both that
1294  * copyright notice and this permission notice appear in supporting
1295  * documentation, and that the names of Thomas Roell and David Dawes not be
1296  * used in advertising or publicity pertaining to distribution of the
1297  * software without specific, written prior permission.  Thomas Roell
1298  * and David Dawes makes no representations about the suitability of this
1299  * software for any purpose.  It is provided "as is" without express or
1300  * implied warranty.
1301  *
1302  * THOMAS ROELL AND DAVID DAWES DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
1303  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
1304  * FITNESS, IN NO EVENT SHALL THOMAS ROELL OR DAVID DAWES BE LIABLE FOR ANY
1305  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
1306  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
1307  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
1308  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1309  *
1310  */
1311 
1312 /**
1313  ** GlidePoint support from XFree86 3.2.
1314  ** Derived from the module:
1315  **/
1316 
1317 /* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86_Mouse.c,v 3.19 1996/10/16 14:40:51 dawes Exp $ */
1318 /* $XConsortium: xf86_Mouse.c /main/10 1996/01/30 15:16:12 kaleb $ */
1319 
1320 /* the following table must be ordered by MOUSE_PROTO_XXX in mouse.h */
1321 static unsigned char proto[][7] = {
1322     /*  hd_mask hd_id   dp_mask dp_id   bytes b4_mask b4_id */
1323     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x23,  0x00 }, /* MicroSoft */
1324     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* MouseSystems */
1325     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* Logitech */
1326     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* MMSeries */
1327     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* MouseMan */
1328     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* Bus */
1329     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* InPort */
1330     {	0xc0,	0x00,	0x00,	0x00,	3,    0x00,  0xff }, /* PS/2 mouse */
1331     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* MM HitTablet */
1332     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* GlidePoint */
1333     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x3f,  0x00 }, /* IntelliMouse */
1334     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* ThinkingMouse */
1335     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* sysmouse */
1336     {	0x40,	0x40,	0x40,	0x00,	3,   ~0x23,  0x00 }, /* X10 MouseRem */
1337     {	0x80,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* KIDSPAD */
1338     {	0xc3,	0xc0,	0x00,	0x00,	6,    0x00,  0xff }, /* VersaPad */
1339     {	0x00,	0x00,	0x00,	0x00,	1,    0x00,  0xff }, /* JogDial */
1340 #if notyet
1341     {	0xf8,	0x80,	0x00,	0x00,	5,   ~0x2f,  0x10 }, /* Mariqua */
1342 #endif
1343 };
1344 static unsigned char cur_proto[7];
1345 
1346 static int
1347 r_identify(void)
1348 {
1349     char pnpbuf[256];	/* PnP identifier string may be up to 256 bytes long */
1350     pnpid_t pnpid;
1351     symtab_t *t;
1352     int level;
1353     int len;
1354 
1355     /* set the driver operation level, if applicable */
1356     if (rodent.level < 0)
1357 	rodent.level = 1;
1358     ioctl(rodent.mfd, MOUSE_SETLEVEL, &rodent.level);
1359     rodent.level = (ioctl(rodent.mfd, MOUSE_GETLEVEL, &level) == 0) ? level : 0;
1360 
1361     /*
1362      * Interrogate the driver and get some intelligence on the device...
1363      * The following ioctl functions are not always supported by device
1364      * drivers.  When the driver doesn't support them, we just trust the
1365      * user to supply valid information.
1366      */
1367     rodent.hw.iftype = MOUSE_IF_UNKNOWN;
1368     rodent.hw.model = MOUSE_MODEL_GENERIC;
1369     ioctl(rodent.mfd, MOUSE_GETHWINFO, &rodent.hw);
1370 
1371     if (rodent.rtype != MOUSE_PROTO_UNKNOWN)
1372 	bcopy(proto[rodent.rtype], cur_proto, sizeof(cur_proto));
1373     rodent.mode.protocol = MOUSE_PROTO_UNKNOWN;
1374     rodent.mode.rate = -1;
1375     rodent.mode.resolution = MOUSE_RES_UNKNOWN;
1376     rodent.mode.accelfactor = 0;
1377     rodent.mode.level = 0;
1378     if (ioctl(rodent.mfd, MOUSE_GETMODE, &rodent.mode) == 0) {
1379 	if ((rodent.mode.protocol == MOUSE_PROTO_UNKNOWN)
1380 	    || (rodent.mode.protocol >= sizeof(proto)/sizeof(proto[0]))) {
1381 	    logwarnx("unknown mouse protocol (%d)", rodent.mode.protocol);
1382 	    return MOUSE_PROTO_UNKNOWN;
1383 	} else {
1384 	    /* INPORT and BUS are the same... */
1385 	    if (rodent.mode.protocol == MOUSE_PROTO_INPORT)
1386 		rodent.mode.protocol = MOUSE_PROTO_BUS;
1387 	    if (rodent.mode.protocol != rodent.rtype) {
1388 		/* Hmm, the driver doesn't agree with the user... */
1389 		if (rodent.rtype != MOUSE_PROTO_UNKNOWN)
1390 		    logwarnx("mouse type mismatch (%s != %s), %s is assumed",
1391 			r_name(rodent.mode.protocol), r_name(rodent.rtype),
1392 			r_name(rodent.mode.protocol));
1393 		rodent.rtype = rodent.mode.protocol;
1394 		bcopy(proto[rodent.rtype], cur_proto, sizeof(cur_proto));
1395 	    }
1396 	}
1397 	cur_proto[4] = rodent.mode.packetsize;
1398 	cur_proto[0] = rodent.mode.syncmask[0];	/* header byte bit mask */
1399 	cur_proto[1] = rodent.mode.syncmask[1];	/* header bit pattern */
1400     }
1401 
1402     /* maybe this is a PnP mouse... */
1403     if (rodent.mode.protocol == MOUSE_PROTO_UNKNOWN) {
1404 
1405 	if (rodent.flags & NoPnP)
1406 	    return rodent.rtype;
1407 	if (((len = pnpgets(pnpbuf)) <= 0) || !pnpparse(&pnpid, pnpbuf, len))
1408 	    return rodent.rtype;
1409 
1410 	debug("PnP serial mouse: '%*.*s' '%*.*s' '%*.*s'",
1411 	    pnpid.neisaid, pnpid.neisaid, pnpid.eisaid,
1412 	    pnpid.ncompat, pnpid.ncompat, pnpid.compat,
1413 	    pnpid.ndescription, pnpid.ndescription, pnpid.description);
1414 
1415 	/* we have a valid PnP serial device ID */
1416 	rodent.hw.iftype = MOUSE_IF_SERIAL;
1417 	t = pnpproto(&pnpid);
1418 	if (t != NULL) {
1419 	    rodent.mode.protocol = t->val;
1420 	    rodent.hw.model = t->val2;
1421 	} else {
1422 	    rodent.mode.protocol = MOUSE_PROTO_UNKNOWN;
1423 	}
1424 	if (rodent.mode.protocol == MOUSE_PROTO_INPORT)
1425 	    rodent.mode.protocol = MOUSE_PROTO_BUS;
1426 
1427 	/* make final adjustment */
1428 	if (rodent.mode.protocol != MOUSE_PROTO_UNKNOWN) {
1429 	    if (rodent.mode.protocol != rodent.rtype) {
1430 		/* Hmm, the device doesn't agree with the user... */
1431 		if (rodent.rtype != MOUSE_PROTO_UNKNOWN)
1432 		    logwarnx("mouse type mismatch (%s != %s), %s is assumed",
1433 			r_name(rodent.mode.protocol), r_name(rodent.rtype),
1434 			r_name(rodent.mode.protocol));
1435 		rodent.rtype = rodent.mode.protocol;
1436 		bcopy(proto[rodent.rtype], cur_proto, sizeof(cur_proto));
1437 	    }
1438 	}
1439     }
1440 
1441     debug("proto params: %02x %02x %02x %02x %d %02x %02x",
1442 	cur_proto[0], cur_proto[1], cur_proto[2], cur_proto[3],
1443 	cur_proto[4], cur_proto[5], cur_proto[6]);
1444 
1445     return rodent.rtype;
1446 }
1447 
1448 static char *
1449 r_if(int iftype)
1450 {
1451     char *s;
1452 
1453     s = gettokenname(rifs, iftype);
1454     return (s == NULL) ? "unknown" : s;
1455 }
1456 
1457 static char *
1458 r_name(int type)
1459 {
1460     return ((type == MOUSE_PROTO_UNKNOWN)
1461 	|| (type > sizeof(rnames)/sizeof(rnames[0]) - 1))
1462 	? "unknown" : rnames[type];
1463 }
1464 
1465 static char *
1466 r_model(int model)
1467 {
1468     char *s;
1469 
1470     s = gettokenname(rmodels, model);
1471     return (s == NULL) ? "unknown" : s;
1472 }
1473 
1474 static void
1475 r_init(void)
1476 {
1477     unsigned char buf[16];	/* scrach buffer */
1478     fd_set fds;
1479     char *s;
1480     char c;
1481     int i;
1482 
1483     /**
1484      ** This comment is a little out of context here, but it contains
1485      ** some useful information...
1486      ********************************************************************
1487      **
1488      ** The following lines take care of the Logitech MouseMan protocols.
1489      **
1490      ** NOTE: There are different versions of both MouseMan and TrackMan!
1491      **       Hence I add another protocol P_LOGIMAN, which the user can
1492      **       specify as MouseMan in his XF86Config file. This entry was
1493      **       formerly handled as a special case of P_MS. However, people
1494      **       who don't have the middle button problem, can still specify
1495      **       Microsoft and use P_MS.
1496      **
1497      ** By default, these mice should use a 3 byte Microsoft protocol
1498      ** plus a 4th byte for the middle button. However, the mouse might
1499      ** have switched to a different protocol before we use it, so I send
1500      ** the proper sequence just in case.
1501      **
1502      ** NOTE: - all commands to (at least the European) MouseMan have to
1503      **         be sent at 1200 Baud.
1504      **       - each command starts with a '*'.
1505      **       - whenever the MouseMan receives a '*', it will switch back
1506      **	 to 1200 Baud. Hence I have to select the desired protocol
1507      **	 first, then select the baud rate.
1508      **
1509      ** The protocols supported by the (European) MouseMan are:
1510      **   -  5 byte packed binary protocol, as with the Mouse Systems
1511      **      mouse. Selected by sequence "*U".
1512      **   -  2 button 3 byte MicroSoft compatible protocol. Selected
1513      **      by sequence "*V".
1514      **   -  3 button 3+1 byte MicroSoft compatible protocol (default).
1515      **      Selected by sequence "*X".
1516      **
1517      ** The following baud rates are supported:
1518      **   -  1200 Baud (default). Selected by sequence "*n".
1519      **   -  9600 Baud. Selected by sequence "*q".
1520      **
1521      ** Selecting a sample rate is no longer supported with the MouseMan!
1522      ** Some additional lines in xf86Config.c take care of ill configured
1523      ** baud rates and sample rates. (The user will get an error.)
1524      */
1525 
1526     switch (rodent.rtype) {
1527 
1528     case MOUSE_PROTO_LOGI:
1529 	/*
1530 	 * The baud rate selection command must be sent at the current
1531 	 * baud rate; try all likely settings
1532 	 */
1533 	setmousespeed(9600, rodent.baudrate, rodentcflags[rodent.rtype]);
1534 	setmousespeed(4800, rodent.baudrate, rodentcflags[rodent.rtype]);
1535 	setmousespeed(2400, rodent.baudrate, rodentcflags[rodent.rtype]);
1536 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1537 	/* select MM series data format */
1538 	write(rodent.mfd, "S", 1);
1539 	setmousespeed(rodent.baudrate, rodent.baudrate,
1540 		      rodentcflags[MOUSE_PROTO_MM]);
1541 	/* select report rate/frequency */
1542 	if      (rodent.rate <= 0)   write(rodent.mfd, "O", 1);
1543 	else if (rodent.rate <= 15)  write(rodent.mfd, "J", 1);
1544 	else if (rodent.rate <= 27)  write(rodent.mfd, "K", 1);
1545 	else if (rodent.rate <= 42)  write(rodent.mfd, "L", 1);
1546 	else if (rodent.rate <= 60)  write(rodent.mfd, "R", 1);
1547 	else if (rodent.rate <= 85)  write(rodent.mfd, "M", 1);
1548 	else if (rodent.rate <= 125) write(rodent.mfd, "Q", 1);
1549 	else			     write(rodent.mfd, "N", 1);
1550 	break;
1551 
1552     case MOUSE_PROTO_LOGIMOUSEMAN:
1553 	/* The command must always be sent at 1200 baud */
1554 	setmousespeed(1200, 1200, rodentcflags[rodent.rtype]);
1555 	write(rodent.mfd, "*X", 2);
1556 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1557 	break;
1558 
1559     case MOUSE_PROTO_HITTAB:
1560 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1561 
1562 	/*
1563 	 * Initialize Hitachi PUMA Plus - Model 1212E to desired settings.
1564 	 * The tablet must be configured to be in MM mode, NO parity,
1565 	 * Binary Format.  xf86Info.sampleRate controls the sensativity
1566 	 * of the tablet.  We only use this tablet for it's 4-button puck
1567 	 * so we don't run in "Absolute Mode"
1568 	 */
1569 	write(rodent.mfd, "z8", 2);	/* Set Parity = "NONE" */
1570 	usleep(50000);
1571 	write(rodent.mfd, "zb", 2);	/* Set Format = "Binary" */
1572 	usleep(50000);
1573 	write(rodent.mfd, "@", 1);	/* Set Report Mode = "Stream" */
1574 	usleep(50000);
1575 	write(rodent.mfd, "R", 1);	/* Set Output Rate = "45 rps" */
1576 	usleep(50000);
1577 	write(rodent.mfd, "I\x20", 2);	/* Set Incrememtal Mode "20" */
1578 	usleep(50000);
1579 	write(rodent.mfd, "E", 1);	/* Set Data Type = "Relative */
1580 	usleep(50000);
1581 
1582 	/* Resolution is in 'lines per inch' on the Hitachi tablet */
1583 	if      (rodent.resolution == MOUSE_RES_LOW)		c = 'g';
1584 	else if (rodent.resolution == MOUSE_RES_MEDIUMLOW)	c = 'e';
1585 	else if (rodent.resolution == MOUSE_RES_MEDIUMHIGH)	c = 'h';
1586 	else if (rodent.resolution == MOUSE_RES_HIGH)		c = 'd';
1587 	else if (rodent.resolution <=   40)			c = 'g';
1588 	else if (rodent.resolution <=  100)			c = 'd';
1589 	else if (rodent.resolution <=  200)			c = 'e';
1590 	else if (rodent.resolution <=  500)			c = 'h';
1591 	else if (rodent.resolution <= 1000)			c = 'j';
1592 	else			c = 'd';
1593 	write(rodent.mfd, &c, 1);
1594 	usleep(50000);
1595 
1596 	write(rodent.mfd, "\021", 1);	/* Resume DATA output */
1597 	break;
1598 
1599     case MOUSE_PROTO_THINK:
1600 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1601 	/* the PnP ID string may be sent again, discard it */
1602 	usleep(200000);
1603 	i = FREAD;
1604 	ioctl(rodent.mfd, TIOCFLUSH, &i);
1605 	/* send the command to initialize the beast */
1606 	for (s = "E5E5"; *s; ++s) {
1607 	    write(rodent.mfd, s, 1);
1608 	    FD_ZERO(&fds);
1609 	    FD_SET(rodent.mfd, &fds);
1610 	    if (select(FD_SETSIZE, &fds, NULL, NULL, NULL) <= 0)
1611 		break;
1612 	    read(rodent.mfd, &c, 1);
1613 	    debug("%c", c);
1614 	    if (c != *s)
1615 		break;
1616 	}
1617 	break;
1618 
1619     case MOUSE_PROTO_JOGDIAL:
1620 	break;
1621     case MOUSE_PROTO_MSC:
1622 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1623 	if (rodent.flags & ClearDTR) {
1624 	   i = TIOCM_DTR;
1625 	   ioctl(rodent.mfd, TIOCMBIC, &i);
1626 	}
1627 	if (rodent.flags & ClearRTS) {
1628 	   i = TIOCM_RTS;
1629 	   ioctl(rodent.mfd, TIOCMBIC, &i);
1630 	}
1631 	break;
1632 
1633     case MOUSE_PROTO_SYSMOUSE:
1634 	if (rodent.hw.iftype == MOUSE_IF_SYSMOUSE)
1635 	    setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1636 	/* FALLTHROUGH */
1637 
1638     case MOUSE_PROTO_BUS:
1639     case MOUSE_PROTO_INPORT:
1640     case MOUSE_PROTO_PS2:
1641 	if (rodent.rate >= 0)
1642 	    rodent.mode.rate = rodent.rate;
1643 	if (rodent.resolution != MOUSE_RES_UNKNOWN)
1644 	    rodent.mode.resolution = rodent.resolution;
1645 	ioctl(rodent.mfd, MOUSE_SETMODE, &rodent.mode);
1646 	break;
1647 
1648     case MOUSE_PROTO_X10MOUSEREM:
1649 	mremote_serversetup();
1650 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1651 	break;
1652 
1653 
1654     case MOUSE_PROTO_VERSAPAD:
1655 	tcsendbreak(rodent.mfd, 0);	/* send break for 400 msec */
1656 	i = FREAD;
1657 	ioctl(rodent.mfd, TIOCFLUSH, &i);
1658 	for (i = 0; i < 7; ++i) {
1659 	    FD_ZERO(&fds);
1660 	    FD_SET(rodent.mfd, &fds);
1661 	    if (select(FD_SETSIZE, &fds, NULL, NULL, NULL) <= 0)
1662 		break;
1663 	    read(rodent.mfd, &c, 1);
1664 	    buf[i] = c;
1665 	}
1666 	debug("%s\n", buf);
1667 	if ((buf[0] != 'V') || (buf[1] != 'P')|| (buf[7] != '\r'))
1668 	    break;
1669 	setmousespeed(9600, rodent.baudrate, rodentcflags[rodent.rtype]);
1670 	tcsendbreak(rodent.mfd, 0);	/* send break for 400 msec again */
1671 	for (i = 0; i < 7; ++i) {
1672 	    FD_ZERO(&fds);
1673 	    FD_SET(rodent.mfd, &fds);
1674 	    if (select(FD_SETSIZE, &fds, NULL, NULL, NULL) <= 0)
1675 		break;
1676 	    read(rodent.mfd, &c, 1);
1677 	    debug("%c", c);
1678 	    if (c != buf[i])
1679 		break;
1680 	}
1681 	i = FREAD;
1682 	ioctl(rodent.mfd, TIOCFLUSH, &i);
1683 	break;
1684 
1685     default:
1686 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
1687 	break;
1688     }
1689 }
1690 
1691 static int
1692 r_protocol(u_char rBuf, mousestatus_t *act)
1693 {
1694     /* MOUSE_MSS_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
1695     static int butmapmss[4] = {	/* Microsoft, MouseMan, GlidePoint,
1696 				   IntelliMouse, Thinking Mouse */
1697 	0,
1698 	MOUSE_BUTTON3DOWN,
1699 	MOUSE_BUTTON1DOWN,
1700 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1701     };
1702     static int butmapmss2[4] = { /* Microsoft, MouseMan, GlidePoint,
1703 				    Thinking Mouse */
1704 	0,
1705 	MOUSE_BUTTON4DOWN,
1706 	MOUSE_BUTTON2DOWN,
1707 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN,
1708     };
1709     /* MOUSE_INTELLI_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
1710     static int butmapintelli[4] = { /* IntelliMouse, NetMouse, Mie Mouse,
1711 				       MouseMan+ */
1712 	0,
1713 	MOUSE_BUTTON2DOWN,
1714 	MOUSE_BUTTON4DOWN,
1715 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN,
1716     };
1717     /* MOUSE_MSC_BUTTON?UP -> MOUSE_BUTTON?DOWN */
1718     static int butmapmsc[8] = {	/* MouseSystems, MMSeries, Logitech,
1719 				   Bus, sysmouse */
1720 	0,
1721 	MOUSE_BUTTON3DOWN,
1722 	MOUSE_BUTTON2DOWN,
1723 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN,
1724 	MOUSE_BUTTON1DOWN,
1725 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1726 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN,
1727 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN
1728     };
1729     /* MOUSE_PS2_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
1730     static int butmapps2[8] = {	/* PS/2 */
1731 	0,
1732 	MOUSE_BUTTON1DOWN,
1733 	MOUSE_BUTTON3DOWN,
1734 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1735 	MOUSE_BUTTON2DOWN,
1736 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN,
1737 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN,
1738 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN
1739     };
1740     /* for Hitachi tablet */
1741     static int butmaphit[8] = {	/* MM HitTablet */
1742 	0,
1743 	MOUSE_BUTTON3DOWN,
1744 	MOUSE_BUTTON2DOWN,
1745 	MOUSE_BUTTON1DOWN,
1746 	MOUSE_BUTTON4DOWN,
1747 	MOUSE_BUTTON5DOWN,
1748 	MOUSE_BUTTON6DOWN,
1749 	MOUSE_BUTTON7DOWN,
1750     };
1751     /* for serial VersaPad */
1752     static int butmapversa[8] = { /* VersaPad */
1753 	0,
1754 	0,
1755 	MOUSE_BUTTON3DOWN,
1756 	MOUSE_BUTTON3DOWN,
1757 	MOUSE_BUTTON1DOWN,
1758 	MOUSE_BUTTON1DOWN,
1759 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1760 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1761     };
1762     /* for PS/2 VersaPad */
1763     static int butmapversaps2[8] = { /* VersaPad */
1764 	0,
1765 	MOUSE_BUTTON3DOWN,
1766 	0,
1767 	MOUSE_BUTTON3DOWN,
1768 	MOUSE_BUTTON1DOWN,
1769 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1770 	MOUSE_BUTTON1DOWN,
1771 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
1772     };
1773     static int           pBufP = 0;
1774     static unsigned char pBuf[8];
1775     static int		 prev_x, prev_y;
1776     static int		 on = FALSE;
1777     int			 x, y;
1778 
1779     debug("received char 0x%x",(int)rBuf);
1780     if (rodent.rtype == MOUSE_PROTO_KIDSPAD)
1781 	return kidspad(rBuf, act) ;
1782     if (rodent.rtype == MOUSE_PROTO_GTCO_DIGIPAD)
1783 	return gtco_digipad(rBuf, act);
1784 
1785     /*
1786      * Hack for resyncing: We check here for a package that is:
1787      *  a) illegal (detected by wrong data-package header)
1788      *  b) invalid (0x80 == -128 and that might be wrong for MouseSystems)
1789      *  c) bad header-package
1790      *
1791      * NOTE: b) is a voilation of the MouseSystems-Protocol, since values of
1792      *       -128 are allowed, but since they are very seldom we can easily
1793      *       use them as package-header with no button pressed.
1794      * NOTE/2: On a PS/2 mouse any byte is valid as a data byte. Furthermore,
1795      *         0x80 is not valid as a header byte. For a PS/2 mouse we skip
1796      *         checking data bytes.
1797      *         For resyncing a PS/2 mouse we require the two most significant
1798      *         bits in the header byte to be 0. These are the overflow bits,
1799      *         and in case of an overflow we actually lose sync. Overflows
1800      *         are very rare, however, and we quickly gain sync again after
1801      *         an overflow condition. This is the best we can do. (Actually,
1802      *         we could use bit 0x08 in the header byte for resyncing, since
1803      *         that bit is supposed to be always on, but nobody told
1804      *         Microsoft...)
1805      */
1806 
1807     if (pBufP != 0 && rodent.rtype != MOUSE_PROTO_PS2 &&
1808 	((rBuf & cur_proto[2]) != cur_proto[3] || rBuf == 0x80))
1809     {
1810 	pBufP = 0;		/* skip package */
1811     }
1812 
1813     if (pBufP == 0 && (rBuf & cur_proto[0]) != cur_proto[1])
1814 	return 0;
1815 
1816     /* is there an extra data byte? */
1817     if (pBufP >= cur_proto[4] && (rBuf & cur_proto[0]) != cur_proto[1])
1818     {
1819 	/*
1820 	 * Hack for Logitech MouseMan Mouse - Middle button
1821 	 *
1822 	 * Unfortunately this mouse has variable length packets: the standard
1823 	 * Microsoft 3 byte packet plus an optional 4th byte whenever the
1824 	 * middle button status changes.
1825 	 *
1826 	 * We have already processed the standard packet with the movement
1827 	 * and button info.  Now post an event message with the old status
1828 	 * of the left and right buttons and the updated middle button.
1829 	 */
1830 
1831 	/*
1832 	 * Even worse, different MouseMen and TrackMen differ in the 4th
1833 	 * byte: some will send 0x00/0x20, others 0x01/0x21, or even
1834 	 * 0x02/0x22, so I have to strip off the lower bits.
1835 	 *
1836 	 * [JCH-96/01/21]
1837 	 * HACK for ALPS "fourth button". (It's bit 0x10 of the "fourth byte"
1838 	 * and it is activated by tapping the glidepad with the finger! 8^)
1839 	 * We map it to bit bit3, and the reverse map in xf86Events just has
1840 	 * to be extended so that it is identified as Button 4. The lower
1841 	 * half of the reverse-map may remain unchanged.
1842 	 */
1843 
1844 	/*
1845 	 * [KY-97/08/03]
1846 	 * Receive the fourth byte only when preceding three bytes have
1847 	 * been detected (pBufP >= cur_proto[4]).  In the previous
1848 	 * versions, the test was pBufP == 0; thus, we may have mistakingly
1849 	 * received a byte even if we didn't see anything preceding
1850 	 * the byte.
1851 	 */
1852 
1853 	if ((rBuf & cur_proto[5]) != cur_proto[6]) {
1854 	    pBufP = 0;
1855 	    return 0;
1856 	}
1857 
1858 	switch (rodent.rtype) {
1859 #if notyet
1860 	case MOUSE_PROTO_MARIQUA:
1861 	    /*
1862 	     * This mouse has 16! buttons in addition to the standard
1863 	     * three of them.  They return 0x10 though 0x1f in the
1864 	     * so-called `ten key' mode and 0x30 though 0x3f in the
1865 	     * `function key' mode.  As there are only 31 bits for
1866 	     * button state (including the standard three), we ignore
1867 	     * the bit 0x20 and don't distinguish the two modes.
1868 	     */
1869 	    act->dx = act->dy = act->dz = 0;
1870 	    act->obutton = act->button;
1871 	    rBuf &= 0x1f;
1872 	    act->button = (1 << (rBuf - 13))
1873 		| (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
1874 	    /*
1875 	     * FIXME: this is a button "down" event. There needs to be
1876 	     * a corresponding button "up" event... XXX
1877 	     */
1878 	    break;
1879 #endif /* notyet */
1880 	case MOUSE_PROTO_JOGDIAL:
1881 	    break;
1882 
1883 	/*
1884 	 * IntelliMouse, NetMouse (including NetMouse Pro) and Mie Mouse
1885 	 * always send the fourth byte, whereas the fourth byte is
1886 	 * optional for GlidePoint and ThinkingMouse. The fourth byte
1887 	 * is also optional for MouseMan+ and FirstMouse+ in their
1888 	 * native mode. It is always sent if they are in the IntelliMouse
1889 	 * compatible mode.
1890 	 */
1891 	case MOUSE_PROTO_INTELLI:	/* IntelliMouse, NetMouse, Mie Mouse,
1892 					   MouseMan+ */
1893 	    act->dx = act->dy = 0;
1894 	    act->dz = (rBuf & 0x08) ? (rBuf & 0x0f) - 16 : (rBuf & 0x0f);
1895 	    if ((act->dz >= 7) || (act->dz <= -7))
1896 		act->dz = 0;
1897 	    act->obutton = act->button;
1898 	    act->button = butmapintelli[(rBuf & MOUSE_MSS_BUTTONS) >> 4]
1899 		| (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
1900 	    break;
1901 
1902 	default:
1903 	    act->dx = act->dy = act->dz = 0;
1904 	    act->obutton = act->button;
1905 	    act->button = butmapmss2[(rBuf & MOUSE_MSS_BUTTONS) >> 4]
1906 		| (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
1907 	    break;
1908 	}
1909 
1910 	act->flags = ((act->dx || act->dy || act->dz) ? MOUSE_POSCHANGED : 0)
1911 	    | (act->obutton ^ act->button);
1912 	pBufP = 0;
1913 	return act->flags;
1914     }
1915 
1916     if (pBufP >= cur_proto[4])
1917 	pBufP = 0;
1918     pBuf[pBufP++] = rBuf;
1919     if (pBufP != cur_proto[4])
1920 	return 0;
1921 
1922     /*
1923      * assembly full package
1924      */
1925 
1926     debug("assembled full packet (len %d) %x,%x,%x,%x,%x,%x,%x,%x",
1927 	cur_proto[4],
1928 	pBuf[0], pBuf[1], pBuf[2], pBuf[3],
1929 	pBuf[4], pBuf[5], pBuf[6], pBuf[7]);
1930 
1931     act->dz = 0;
1932     act->obutton = act->button;
1933     switch (rodent.rtype)
1934     {
1935     case MOUSE_PROTO_MS:		/* Microsoft */
1936     case MOUSE_PROTO_LOGIMOUSEMAN:	/* MouseMan/TrackMan */
1937     case MOUSE_PROTO_X10MOUSEREM:	/* X10 MouseRemote */
1938 	act->button = act->obutton & MOUSE_BUTTON4DOWN;
1939 	if (rodent.flags & ChordMiddle)
1940 	    act->button |= ((pBuf[0] & MOUSE_MSS_BUTTONS) == MOUSE_MSS_BUTTONS)
1941 		? MOUSE_BUTTON2DOWN
1942 		: butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
1943 	else
1944 	    act->button |= (act->obutton & MOUSE_BUTTON2DOWN)
1945 		| butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
1946 
1947 	/* Send X10 btn events to remote client (ensure -128-+127 range) */
1948 	if ((rodent.rtype == MOUSE_PROTO_X10MOUSEREM) &&
1949 	    ((pBuf[0] & 0xFC) == 0x44) && (pBuf[2] == 0x3F)) {
1950 	    if (rodent.mremcfd >= 0) {
1951 		unsigned char key = (signed char)(((pBuf[0] & 0x03) << 6) |
1952 						  (pBuf[1] & 0x3F));
1953 		write(rodent.mremcfd, &key, 1);
1954 	    }
1955 	    return 0;
1956 	}
1957 
1958 	act->dx = (signed char)(((pBuf[0] & 0x03) << 6) | (pBuf[1] & 0x3F));
1959 	act->dy = (signed char)(((pBuf[0] & 0x0C) << 4) | (pBuf[2] & 0x3F));
1960 	break;
1961 
1962     case MOUSE_PROTO_GLIDEPOINT:	/* GlidePoint */
1963     case MOUSE_PROTO_THINK:		/* ThinkingMouse */
1964     case MOUSE_PROTO_INTELLI:		/* IntelliMouse, NetMouse, Mie Mouse,
1965 					   MouseMan+ */
1966 	act->button = (act->obutton & (MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN))
1967 	    | butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
1968 	act->dx = (signed char)(((pBuf[0] & 0x03) << 6) | (pBuf[1] & 0x3F));
1969 	act->dy = (signed char)(((pBuf[0] & 0x0C) << 4) | (pBuf[2] & 0x3F));
1970 	break;
1971 
1972     case MOUSE_PROTO_MSC:		/* MouseSystems Corp */
1973 #if notyet
1974     case MOUSE_PROTO_MARIQUA:		/* Mariqua */
1975 #endif
1976 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_MSC_BUTTONS];
1977 	act->dx =    (signed char)(pBuf[1]) + (signed char)(pBuf[3]);
1978 	act->dy = - ((signed char)(pBuf[2]) + (signed char)(pBuf[4]));
1979 	break;
1980 
1981     case MOUSE_PROTO_JOGDIAL:		/* JogDial */
1982 	    if (rBuf == 0x6c)
1983 	      act->dz = -1;
1984 	    if (rBuf == 0x72)
1985 	      act->dz = 1;
1986 	    if (rBuf == 0x64)
1987 	      act->button = MOUSE_BUTTON1DOWN;
1988 	    if (rBuf == 0x75)
1989 	      act->button = 0;
1990 	break;
1991 
1992     case MOUSE_PROTO_HITTAB:		/* MM HitTablet */
1993 	act->button = butmaphit[pBuf[0] & 0x07];
1994 	act->dx = (pBuf[0] & MOUSE_MM_XPOSITIVE) ?   pBuf[1] : - pBuf[1];
1995 	act->dy = (pBuf[0] & MOUSE_MM_YPOSITIVE) ? - pBuf[2] :   pBuf[2];
1996 	break;
1997 
1998     case MOUSE_PROTO_MM:		/* MM Series */
1999     case MOUSE_PROTO_LOGI:		/* Logitech Mice */
2000 	act->button = butmapmsc[pBuf[0] & MOUSE_MSC_BUTTONS];
2001 	act->dx = (pBuf[0] & MOUSE_MM_XPOSITIVE) ?   pBuf[1] : - pBuf[1];
2002 	act->dy = (pBuf[0] & MOUSE_MM_YPOSITIVE) ? - pBuf[2] :   pBuf[2];
2003 	break;
2004 
2005     case MOUSE_PROTO_VERSAPAD:		/* VersaPad */
2006 	act->button = butmapversa[(pBuf[0] & MOUSE_VERSA_BUTTONS) >> 3];
2007 	act->button |= (pBuf[0] & MOUSE_VERSA_TAP) ? MOUSE_BUTTON4DOWN : 0;
2008 	act->dx = act->dy = 0;
2009 	if (!(pBuf[0] & MOUSE_VERSA_IN_USE)) {
2010 	    on = FALSE;
2011 	    break;
2012 	}
2013 	x = (pBuf[2] << 6) | pBuf[1];
2014 	if (x & 0x800)
2015 	    x -= 0x1000;
2016 	y = (pBuf[4] << 6) | pBuf[3];
2017 	if (y & 0x800)
2018 	    y -= 0x1000;
2019 	if (on) {
2020 	    act->dx = prev_x - x;
2021 	    act->dy = prev_y - y;
2022 	} else {
2023 	    on = TRUE;
2024 	}
2025 	prev_x = x;
2026 	prev_y = y;
2027 	break;
2028 
2029     case MOUSE_PROTO_BUS:		/* Bus */
2030     case MOUSE_PROTO_INPORT:		/* InPort */
2031 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_MSC_BUTTONS];
2032 	act->dx =   (signed char)pBuf[1];
2033 	act->dy = - (signed char)pBuf[2];
2034 	break;
2035 
2036     case MOUSE_PROTO_PS2:		/* PS/2 */
2037 	act->button = butmapps2[pBuf[0] & MOUSE_PS2_BUTTONS];
2038 	act->dx = (pBuf[0] & MOUSE_PS2_XNEG) ?    pBuf[1] - 256  :  pBuf[1];
2039 	act->dy = (pBuf[0] & MOUSE_PS2_YNEG) ?  -(pBuf[2] - 256) : -pBuf[2];
2040 	/*
2041 	 * Moused usually operates the psm driver at the operation level 1
2042 	 * which sends mouse data in MOUSE_PROTO_SYSMOUSE protocol.
2043 	 * The following code takes effect only when the user explicitly
2044 	 * requets the level 2 at which wheel movement and additional button
2045 	 * actions are encoded in model-dependent formats. At the level 0
2046 	 * the following code is no-op because the psm driver says the model
2047 	 * is MOUSE_MODEL_GENERIC.
2048 	 */
2049 	switch (rodent.hw.model) {
2050 	case MOUSE_MODEL_EXPLORER:
2051 	    /* wheel and additional button data is in the fourth byte */
2052 	    act->dz = (pBuf[3] & MOUSE_EXPLORER_ZNEG)
2053 		? (pBuf[3] & 0x0f) - 16 : (pBuf[3] & 0x0f);
2054 	    act->button |= (pBuf[3] & MOUSE_EXPLORER_BUTTON4DOWN)
2055 		? MOUSE_BUTTON4DOWN : 0;
2056 	    act->button |= (pBuf[3] & MOUSE_EXPLORER_BUTTON5DOWN)
2057 		? MOUSE_BUTTON5DOWN : 0;
2058 	    break;
2059 	case MOUSE_MODEL_INTELLI:
2060 	case MOUSE_MODEL_NET:
2061 	    /* wheel data is in the fourth byte */
2062 	    act->dz = (signed char)pBuf[3];
2063 	    if ((act->dz >= 7) || (act->dz <= -7))
2064 		act->dz = 0;
2065 	    /* some compatible mice may have additional buttons */
2066 	    act->button |= (pBuf[0] & MOUSE_PS2INTELLI_BUTTON4DOWN)
2067 		? MOUSE_BUTTON4DOWN : 0;
2068 	    act->button |= (pBuf[0] & MOUSE_PS2INTELLI_BUTTON5DOWN)
2069 		? MOUSE_BUTTON5DOWN : 0;
2070 	    break;
2071 	case MOUSE_MODEL_MOUSEMANPLUS:
2072 	    if (((pBuf[0] & MOUSE_PS2PLUS_SYNCMASK) == MOUSE_PS2PLUS_SYNC)
2073 		    && (abs(act->dx) > 191)
2074 		    && MOUSE_PS2PLUS_CHECKBITS(pBuf)) {
2075 		/* the extended data packet encodes button and wheel events */
2076 		switch (MOUSE_PS2PLUS_PACKET_TYPE(pBuf)) {
2077 		case 1:
2078 		    /* wheel data packet */
2079 		    act->dx = act->dy = 0;
2080 		    if (pBuf[2] & 0x80) {
2081 			/* horizontal roller count - ignore it XXX*/
2082 		    } else {
2083 			/* vertical roller count */
2084 			act->dz = (pBuf[2] & MOUSE_PS2PLUS_ZNEG)
2085 			    ? (pBuf[2] & 0x0f) - 16 : (pBuf[2] & 0x0f);
2086 		    }
2087 		    act->button |= (pBuf[2] & MOUSE_PS2PLUS_BUTTON4DOWN)
2088 			? MOUSE_BUTTON4DOWN : 0;
2089 		    act->button |= (pBuf[2] & MOUSE_PS2PLUS_BUTTON5DOWN)
2090 			? MOUSE_BUTTON5DOWN : 0;
2091 		    break;
2092 		case 2:
2093 		    /* this packet type is reserved by Logitech */
2094 		    /*
2095 		     * IBM ScrollPoint Mouse uses this packet type to
2096 		     * encode both vertical and horizontal scroll movement.
2097 		     */
2098 		    act->dx = act->dy = 0;
2099 		    /* horizontal roller count */
2100 		    if (pBuf[2] & 0x0f)
2101 			act->dz = (pBuf[2] & MOUSE_SPOINT_WNEG) ? -2 : 2;
2102 		    /* vertical roller count */
2103 		    if (pBuf[2] & 0xf0)
2104 			act->dz = (pBuf[2] & MOUSE_SPOINT_ZNEG) ? -1 : 1;
2105 #if 0
2106 		    /* vertical roller count */
2107 		    act->dz = (pBuf[2] & MOUSE_SPOINT_ZNEG)
2108 			? ((pBuf[2] >> 4) & 0x0f) - 16
2109 			: ((pBuf[2] >> 4) & 0x0f);
2110 		    /* horizontal roller count */
2111 		    act->dw = (pBuf[2] & MOUSE_SPOINT_WNEG)
2112 			? (pBuf[2] & 0x0f) - 16 : (pBuf[2] & 0x0f);
2113 #endif
2114 		    break;
2115 		case 0:
2116 		    /* device type packet - shouldn't happen */
2117 		    /* FALLTHROUGH */
2118 		default:
2119 		    act->dx = act->dy = 0;
2120 		    act->button = act->obutton;
2121 		    debug("unknown PS2++ packet type %d: 0x%02x 0x%02x 0x%02x\n",
2122 			  MOUSE_PS2PLUS_PACKET_TYPE(pBuf),
2123 			  pBuf[0], pBuf[1], pBuf[2]);
2124 		    break;
2125 		}
2126 	    } else {
2127 		/* preserve button states */
2128 		act->button |= act->obutton & MOUSE_EXTBUTTONS;
2129 	    }
2130 	    break;
2131 	case MOUSE_MODEL_GLIDEPOINT:
2132 	    /* `tapping' action */
2133 	    act->button |= ((pBuf[0] & MOUSE_PS2_TAP)) ? 0 : MOUSE_BUTTON4DOWN;
2134 	    break;
2135 	case MOUSE_MODEL_NETSCROLL:
2136 	    /* three addtional bytes encode buttons and wheel events */
2137 	    act->button |= (pBuf[3] & MOUSE_PS2_BUTTON3DOWN)
2138 		? MOUSE_BUTTON4DOWN : 0;
2139 	    act->button |= (pBuf[3] & MOUSE_PS2_BUTTON1DOWN)
2140 		? MOUSE_BUTTON5DOWN : 0;
2141 	    act->dz = (pBuf[3] & MOUSE_PS2_XNEG) ? pBuf[4] - 256 : pBuf[4];
2142 	    break;
2143 	case MOUSE_MODEL_THINK:
2144 	    /* the fourth button state in the first byte */
2145 	    act->button |= (pBuf[0] & MOUSE_PS2_TAP) ? MOUSE_BUTTON4DOWN : 0;
2146 	    break;
2147 	case MOUSE_MODEL_VERSAPAD:
2148 	    act->button = butmapversaps2[pBuf[0] & MOUSE_PS2VERSA_BUTTONS];
2149 	    act->button |=
2150 		(pBuf[0] & MOUSE_PS2VERSA_TAP) ? MOUSE_BUTTON4DOWN : 0;
2151 	    act->dx = act->dy = 0;
2152 	    if (!(pBuf[0] & MOUSE_PS2VERSA_IN_USE)) {
2153 		on = FALSE;
2154 		break;
2155 	    }
2156 	    x = ((pBuf[4] << 8) & 0xf00) | pBuf[1];
2157 	    if (x & 0x800)
2158 		x -= 0x1000;
2159 	    y = ((pBuf[4] << 4) & 0xf00) | pBuf[2];
2160 	    if (y & 0x800)
2161 		y -= 0x1000;
2162 	    if (on) {
2163 		act->dx = prev_x - x;
2164 		act->dy = prev_y - y;
2165 	    } else {
2166 		on = TRUE;
2167 	    }
2168 	    prev_x = x;
2169 	    prev_y = y;
2170 	    break;
2171 	case MOUSE_MODEL_4D:
2172 	    act->dx = (pBuf[1] & 0x80) ?    pBuf[1] - 256  :  pBuf[1];
2173 	    act->dy = (pBuf[2] & 0x80) ?  -(pBuf[2] - 256) : -pBuf[2];
2174 	    switch (pBuf[0] & MOUSE_4D_WHEELBITS) {
2175 	    case 0x10:
2176 		act->dz = 1;
2177 		break;
2178 	    case 0x30:
2179 		act->dz = -1;
2180 		break;
2181 	    case 0x40:	/* 2nd wheel rolling right XXX */
2182 		act->dz = 2;
2183 		break;
2184 	    case 0xc0:	/* 2nd wheel rolling left XXX */
2185 		act->dz = -2;
2186 		break;
2187 	    }
2188 	    break;
2189 	case MOUSE_MODEL_4DPLUS:
2190 	    if ((act->dx < 16 - 256) && (act->dy > 256 - 16)) {
2191 		act->dx = act->dy = 0;
2192 		if (pBuf[2] & MOUSE_4DPLUS_BUTTON4DOWN)
2193 		    act->button |= MOUSE_BUTTON4DOWN;
2194 		act->dz = (pBuf[2] & MOUSE_4DPLUS_ZNEG)
2195 			      ? ((pBuf[2] & 0x07) - 8) : (pBuf[2] & 0x07);
2196 	    } else {
2197 		/* preserve previous button states */
2198 		act->button |= act->obutton & MOUSE_EXTBUTTONS;
2199 	    }
2200 	    break;
2201 	case MOUSE_MODEL_GENERIC:
2202 	default:
2203 	    break;
2204 	}
2205 	break;
2206 
2207     case MOUSE_PROTO_SYSMOUSE:		/* sysmouse */
2208 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_SYS_STDBUTTONS];
2209 	act->dx =    (signed char)(pBuf[1]) + (signed char)(pBuf[3]);
2210 	act->dy = - ((signed char)(pBuf[2]) + (signed char)(pBuf[4]));
2211 	if (rodent.level == 1) {
2212 	    act->dz = ((signed char)(pBuf[5] << 1) + (signed char)(pBuf[6] << 1)) >> 1;
2213 	    act->button |= ((~pBuf[7] & MOUSE_SYS_EXTBUTTONS) << 3);
2214 	}
2215 	break;
2216 
2217     default:
2218 	return 0;
2219     }
2220     /*
2221      * We don't reset pBufP here yet, as there may be an additional data
2222      * byte in some protocols. See above.
2223      */
2224 
2225     /* has something changed? */
2226     act->flags = ((act->dx || act->dy || act->dz) ? MOUSE_POSCHANGED : 0)
2227 	| (act->obutton ^ act->button);
2228 
2229     return act->flags;
2230 }
2231 
2232 static int
2233 r_statetrans(mousestatus_t *a1, mousestatus_t *a2, int trans)
2234 {
2235     int changed;
2236     int flags;
2237 
2238     a2->dx = a1->dx;
2239     a2->dy = a1->dy;
2240     a2->dz = a1->dz;
2241     a2->obutton = a2->button;
2242     a2->button = a1->button;
2243     a2->flags = a1->flags;
2244     changed = FALSE;
2245 
2246     if (rodent.flags & Emulate3Button) {
2247 	if (debug > 2)
2248 	    debug("state:%d, trans:%d -> state:%d",
2249 		  mouse_button_state, trans,
2250 		  states[mouse_button_state].s[trans]);
2251 	/*
2252 	 * Avoid re-ordering button and movement events. While a button
2253 	 * event is deferred, throw away up to BUTTON2_MAXMOVE movement
2254 	 * events to allow for mouse jitter. If more movement events
2255 	 * occur, then complete the deferred button events immediately.
2256 	 */
2257 	if ((a2->dx != 0 || a2->dy != 0) &&
2258 	    S_DELAYED(states[mouse_button_state].s[trans])) {
2259 		if (++mouse_move_delayed > BUTTON2_MAXMOVE) {
2260 			mouse_move_delayed = 0;
2261 			mouse_button_state =
2262 			    states[mouse_button_state].s[A_TIMEOUT];
2263 			changed = TRUE;
2264 		} else
2265 			a2->dx = a2->dy = 0;
2266 	} else
2267 		mouse_move_delayed = 0;
2268 	if (mouse_button_state != states[mouse_button_state].s[trans])
2269 		changed = TRUE;
2270 	if (changed)
2271 		gettimeofday(&mouse_button_state_tv, NULL);
2272 	mouse_button_state = states[mouse_button_state].s[trans];
2273 	a2->button &=
2274 	    ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN);
2275 	a2->button &= states[mouse_button_state].mask;
2276 	a2->button |= states[mouse_button_state].buttons;
2277 	flags = a2->flags & MOUSE_POSCHANGED;
2278 	flags |= a2->obutton ^ a2->button;
2279 	if (flags & MOUSE_BUTTON2DOWN) {
2280 	    a2->flags = flags & MOUSE_BUTTON2DOWN;
2281 	    r_timestamp(a2);
2282 	}
2283 	a2->flags = flags;
2284     }
2285     return changed;
2286 }
2287 
2288 /* phisical to logical button mapping */
2289 static int p2l[MOUSE_MAXBUTTON] = {
2290     MOUSE_BUTTON1DOWN, MOUSE_BUTTON2DOWN, MOUSE_BUTTON3DOWN, MOUSE_BUTTON4DOWN,
2291     MOUSE_BUTTON5DOWN, MOUSE_BUTTON6DOWN, MOUSE_BUTTON7DOWN, MOUSE_BUTTON8DOWN,
2292     0x00000100,        0x00000200,        0x00000400,        0x00000800,
2293     0x00001000,        0x00002000,        0x00004000,        0x00008000,
2294     0x00010000,        0x00020000,        0x00040000,        0x00080000,
2295     0x00100000,        0x00200000,        0x00400000,        0x00800000,
2296     0x01000000,        0x02000000,        0x04000000,        0x08000000,
2297     0x10000000,        0x20000000,        0x40000000,
2298 };
2299 
2300 static char *
2301 skipspace(char *s)
2302 {
2303     while(isspace(*s))
2304 	++s;
2305     return s;
2306 }
2307 
2308 static int
2309 r_installmap(char *arg)
2310 {
2311     int pbutton;
2312     int lbutton;
2313     char *s;
2314 
2315     while (*arg) {
2316 	arg = skipspace(arg);
2317 	s = arg;
2318 	while (isdigit(*arg))
2319 	    ++arg;
2320 	arg = skipspace(arg);
2321 	if ((arg <= s) || (*arg != '='))
2322 	    return FALSE;
2323 	lbutton = atoi(s);
2324 
2325 	arg = skipspace(++arg);
2326 	s = arg;
2327 	while (isdigit(*arg))
2328 	    ++arg;
2329 	if ((arg <= s) || (!isspace(*arg) && (*arg != '\0')))
2330 	    return FALSE;
2331 	pbutton = atoi(s);
2332 
2333 	if ((lbutton <= 0) || (lbutton > MOUSE_MAXBUTTON))
2334 	    return FALSE;
2335 	if ((pbutton <= 0) || (pbutton > MOUSE_MAXBUTTON))
2336 	    return FALSE;
2337 	p2l[pbutton - 1] = 1 << (lbutton - 1);
2338 	mstate[lbutton - 1] = &bstate[pbutton - 1];
2339     }
2340 
2341     return TRUE;
2342 }
2343 
2344 static void
2345 r_map(mousestatus_t *act1, mousestatus_t *act2)
2346 {
2347     register int pb;
2348     register int pbuttons;
2349     int lbuttons;
2350 
2351     pbuttons = act1->button;
2352     lbuttons = 0;
2353 
2354     act2->obutton = act2->button;
2355     if (pbuttons & rodent.wmode) {
2356 	pbuttons &= ~rodent.wmode;
2357 	act1->dz = act1->dy;
2358 	act1->dx = 0;
2359 	act1->dy = 0;
2360     }
2361     act2->dx = act1->dx;
2362     act2->dy = act1->dy;
2363     act2->dz = act1->dz;
2364 
2365     switch (rodent.zmap[0]) {
2366     case 0:	/* do nothing */
2367 	break;
2368     case MOUSE_XAXIS:
2369 	if (act1->dz != 0) {
2370 	    act2->dx = act1->dz;
2371 	    act2->dz = 0;
2372 	}
2373 	break;
2374     case MOUSE_YAXIS:
2375 	if (act1->dz != 0) {
2376 	    act2->dy = act1->dz;
2377 	    act2->dz = 0;
2378 	}
2379 	break;
2380     default:	/* buttons */
2381 	pbuttons &= ~(rodent.zmap[0] | rodent.zmap[1]
2382 		    | rodent.zmap[2] | rodent.zmap[3]);
2383 	if ((act1->dz < -1) && rodent.zmap[2]) {
2384 	    pbuttons |= rodent.zmap[2];
2385 	    zstate[2].count = 1;
2386 	} else if (act1->dz < 0) {
2387 	    pbuttons |= rodent.zmap[0];
2388 	    zstate[0].count = 1;
2389 	} else if ((act1->dz > 1) && rodent.zmap[3]) {
2390 	    pbuttons |= rodent.zmap[3];
2391 	    zstate[3].count = 1;
2392 	} else if (act1->dz > 0) {
2393 	    pbuttons |= rodent.zmap[1];
2394 	    zstate[1].count = 1;
2395 	}
2396 	act2->dz = 0;
2397 	break;
2398     }
2399 
2400     for (pb = 0; (pb < MOUSE_MAXBUTTON) && (pbuttons != 0); ++pb) {
2401 	lbuttons |= (pbuttons & 1) ? p2l[pb] : 0;
2402 	pbuttons >>= 1;
2403     }
2404     act2->button = lbuttons;
2405 
2406     act2->flags = ((act2->dx || act2->dy || act2->dz) ? MOUSE_POSCHANGED : 0)
2407 	| (act2->obutton ^ act2->button);
2408 }
2409 
2410 static void
2411 r_timestamp(mousestatus_t *act)
2412 {
2413     struct timeval tv;
2414     struct timeval tv1;
2415     struct timeval tv2;
2416     struct timeval tv3;
2417     int button;
2418     int mask;
2419     int i;
2420 
2421     mask = act->flags & MOUSE_BUTTONS;
2422 #if 0
2423     if (mask == 0)
2424 	return;
2425 #endif
2426 
2427     gettimeofday(&tv1, NULL);
2428     drift_current_tv = tv1;
2429 
2430     /* double click threshold */
2431     tv2.tv_sec = rodent.clickthreshold/1000;
2432     tv2.tv_usec = (rodent.clickthreshold%1000)*1000;
2433     timersub(&tv1, &tv2, &tv);
2434     debug("tv:  %ld %ld", tv.tv_sec, tv.tv_usec);
2435 
2436     /* 3 button emulation timeout */
2437     tv2.tv_sec = rodent.button2timeout/1000;
2438     tv2.tv_usec = (rodent.button2timeout%1000)*1000;
2439     timersub(&tv1, &tv2, &tv3);
2440 
2441     button = MOUSE_BUTTON1DOWN;
2442     for (i = 0; (i < MOUSE_MAXBUTTON) && (mask != 0); ++i) {
2443 	if (mask & 1) {
2444 	    if (act->button & button) {
2445 		/* the button is down */
2446 		debug("  :  %ld %ld",
2447 		    bstate[i].tv.tv_sec, bstate[i].tv.tv_usec);
2448 		if (timercmp(&tv, &bstate[i].tv, >)) {
2449 		    bstate[i].count = 1;
2450 		} else {
2451 		    ++bstate[i].count;
2452 		}
2453 		bstate[i].tv = tv1;
2454 	    } else {
2455 		/* the button is up */
2456 		bstate[i].tv = tv1;
2457 	    }
2458 	} else {
2459 	    if (act->button & button) {
2460 		/* the button has been down */
2461 		if (timercmp(&tv3, &bstate[i].tv, >)) {
2462 		    bstate[i].count = 1;
2463 		    bstate[i].tv = tv1;
2464 		    act->flags |= button;
2465 		    debug("button %d timeout", i + 1);
2466 		}
2467 	    } else {
2468 		/* the button has been up */
2469 	    }
2470 	}
2471 	button <<= 1;
2472 	mask >>= 1;
2473     }
2474 }
2475 
2476 static int
2477 r_timeout(void)
2478 {
2479     struct timeval tv;
2480     struct timeval tv1;
2481     struct timeval tv2;
2482 
2483     if (states[mouse_button_state].timeout)
2484 	return TRUE;
2485     gettimeofday(&tv1, NULL);
2486     tv2.tv_sec = rodent.button2timeout/1000;
2487     tv2.tv_usec = (rodent.button2timeout%1000)*1000;
2488     timersub(&tv1, &tv2, &tv);
2489     return timercmp(&tv, &mouse_button_state_tv, >);
2490 }
2491 
2492 static void
2493 r_click(mousestatus_t *act)
2494 {
2495     struct mouse_info mouse;
2496     int button;
2497     int mask;
2498     int i;
2499 
2500     mask = act->flags & MOUSE_BUTTONS;
2501     if (mask == 0)
2502 	return;
2503 
2504     button = MOUSE_BUTTON1DOWN;
2505     for (i = 0; (i < MOUSE_MAXBUTTON) && (mask != 0); ++i) {
2506 	if (mask & 1) {
2507 	    debug("mstate[%d]->count:%d", i, mstate[i]->count);
2508 	    if (act->button & button) {
2509 		/* the button is down */
2510 		mouse.u.event.value = mstate[i]->count;
2511 	    } else {
2512 		/* the button is up */
2513 		mouse.u.event.value = 0;
2514 	    }
2515 	    mouse.operation = MOUSE_BUTTON_EVENT;
2516 	    mouse.u.event.id = button;
2517 	    if (debug < 2)
2518 		if (!paused)
2519 		    ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
2520 	    debug("button %d  count %d", i + 1, mouse.u.event.value);
2521 	}
2522 	button <<= 1;
2523 	mask >>= 1;
2524     }
2525 }
2526 
2527 /* $XConsortium: posix_tty.c,v 1.3 95/01/05 20:42:55 kaleb Exp $ */
2528 /* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/shared/posix_tty.c,v 3.4 1995/01/28 17:05:03 dawes Exp $ */
2529 /*
2530  * Copyright 1993 by David Dawes <dawes@physics.su.oz.au>
2531  *
2532  * Permission to use, copy, modify, distribute, and sell this software and its
2533  * documentation for any purpose is hereby granted without fee, provided that
2534  * the above copyright notice appear in all copies and that both that
2535  * copyright notice and this permission notice appear in supporting
2536  * documentation, and that the name of David Dawes
2537  * not be used in advertising or publicity pertaining to distribution of
2538  * the software without specific, written prior permission.
2539  * David Dawes makes no representations about the suitability of this
2540  * software for any purpose.  It is provided "as is" without express or
2541  * implied warranty.
2542  *
2543  * DAVID DAWES DISCLAIMS ALL WARRANTIES WITH REGARD TO
2544  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
2545  * FITNESS, IN NO EVENT SHALL DAVID DAWES BE LIABLE FOR
2546  * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
2547  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
2548  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
2549  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
2550  *
2551  */
2552 
2553 
2554 static void
2555 setmousespeed(int old, int new, unsigned cflag)
2556 {
2557 	struct termios tty;
2558 	char *c;
2559 
2560 	if (tcgetattr(rodent.mfd, &tty) < 0)
2561 	{
2562 		logwarn("unable to get status of mouse fd");
2563 		return;
2564 	}
2565 
2566 	tty.c_iflag = IGNBRK | IGNPAR;
2567 	tty.c_oflag = 0;
2568 	tty.c_lflag = 0;
2569 	tty.c_cflag = (tcflag_t)cflag;
2570 	tty.c_cc[VTIME] = 0;
2571 	tty.c_cc[VMIN] = 1;
2572 
2573 	switch (old)
2574 	{
2575 	case 9600:
2576 		cfsetispeed(&tty, B9600);
2577 		cfsetospeed(&tty, B9600);
2578 		break;
2579 	case 4800:
2580 		cfsetispeed(&tty, B4800);
2581 		cfsetospeed(&tty, B4800);
2582 		break;
2583 	case 2400:
2584 		cfsetispeed(&tty, B2400);
2585 		cfsetospeed(&tty, B2400);
2586 		break;
2587 	case 1200:
2588 	default:
2589 		cfsetispeed(&tty, B1200);
2590 		cfsetospeed(&tty, B1200);
2591 	}
2592 
2593 	if (tcsetattr(rodent.mfd, TCSADRAIN, &tty) < 0)
2594 	{
2595 		logwarn("unable to set status of mouse fd");
2596 		return;
2597 	}
2598 
2599 	switch (new)
2600 	{
2601 	case 9600:
2602 		c = "*q";
2603 		cfsetispeed(&tty, B9600);
2604 		cfsetospeed(&tty, B9600);
2605 		break;
2606 	case 4800:
2607 		c = "*p";
2608 		cfsetispeed(&tty, B4800);
2609 		cfsetospeed(&tty, B4800);
2610 		break;
2611 	case 2400:
2612 		c = "*o";
2613 		cfsetispeed(&tty, B2400);
2614 		cfsetospeed(&tty, B2400);
2615 		break;
2616 	case 1200:
2617 	default:
2618 		c = "*n";
2619 		cfsetispeed(&tty, B1200);
2620 		cfsetospeed(&tty, B1200);
2621 	}
2622 
2623 	if (rodent.rtype == MOUSE_PROTO_LOGIMOUSEMAN
2624 	    || rodent.rtype == MOUSE_PROTO_LOGI)
2625 	{
2626 		if (write(rodent.mfd, c, 2) != 2)
2627 		{
2628 			logwarn("unable to write to mouse fd");
2629 			return;
2630 		}
2631 	}
2632 	usleep(100000);
2633 
2634 	if (tcsetattr(rodent.mfd, TCSADRAIN, &tty) < 0)
2635 		logwarn("unable to set status of mouse fd");
2636 }
2637 
2638 /*
2639  * PnP COM device support
2640  *
2641  * It's a simplistic implementation, but it works :-)
2642  * KY, 31/7/97.
2643  */
2644 
2645 /*
2646  * Try to elicit a PnP ID as described in
2647  * Microsoft, Hayes: "Plug and Play External COM Device Specification,
2648  * rev 1.00", 1995.
2649  *
2650  * The routine does not fully implement the COM Enumerator as par Section
2651  * 2.1 of the document.  In particular, we don't have idle state in which
2652  * the driver software monitors the com port for dynamic connection or
2653  * removal of a device at the port, because `moused' simply quits if no
2654  * device is found.
2655  *
2656  * In addition, as PnP COM device enumeration procedure slightly has
2657  * changed since its first publication, devices which follow earlier
2658  * revisions of the above spec. may fail to respond if the rev 1.0
2659  * procedure is used. XXX
2660  */
2661 static int
2662 pnpwakeup1(void)
2663 {
2664     struct timeval timeout;
2665     fd_set fds;
2666     int i;
2667 
2668     /*
2669      * This is the procedure described in rev 1.0 of PnP COM device spec.
2670      * Unfortunately, some devices which comform to earlier revisions of
2671      * the spec gets confused and do not return the ID string...
2672      */
2673     debug("PnP COM device rev 1.0 probe...");
2674 
2675     /* port initialization (2.1.2) */
2676     ioctl(rodent.mfd, TIOCMGET, &i);
2677     i |= TIOCM_DTR;		/* DTR = 1 */
2678     i &= ~TIOCM_RTS;		/* RTS = 0 */
2679     ioctl(rodent.mfd, TIOCMSET, &i);
2680     usleep(240000);
2681 
2682     /*
2683      * The PnP COM device spec. dictates that the mouse must set DSR
2684      * in response to DTR (by hardware or by software) and that if DSR is
2685      * not asserted, the host computer should think that there is no device
2686      * at this serial port.  But some mice just don't do that...
2687      */
2688     ioctl(rodent.mfd, TIOCMGET, &i);
2689     debug("modem status 0%o", i);
2690     if ((i & TIOCM_DSR) == 0)
2691 	return FALSE;
2692 
2693     /* port setup, 1st phase (2.1.3) */
2694     setmousespeed(1200, 1200, (CS7 | CREAD | CLOCAL | HUPCL));
2695     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 0, RTS = 0 */
2696     ioctl(rodent.mfd, TIOCMBIC, &i);
2697     usleep(240000);
2698     i = TIOCM_DTR;		/* DTR = 1, RTS = 0 */
2699     ioctl(rodent.mfd, TIOCMBIS, &i);
2700     usleep(240000);
2701 
2702     /* wait for response, 1st phase (2.1.4) */
2703     i = FREAD;
2704     ioctl(rodent.mfd, TIOCFLUSH, &i);
2705     i = TIOCM_RTS;		/* DTR = 1, RTS = 1 */
2706     ioctl(rodent.mfd, TIOCMBIS, &i);
2707 
2708     /* try to read something */
2709     FD_ZERO(&fds);
2710     FD_SET(rodent.mfd, &fds);
2711     timeout.tv_sec = 0;
2712     timeout.tv_usec = 240000;
2713     if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) {
2714 	debug("pnpwakeup1(): valid response in first phase.");
2715 	return TRUE;
2716     }
2717 
2718     /* port setup, 2nd phase (2.1.5) */
2719     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 0, RTS = 0 */
2720     ioctl(rodent.mfd, TIOCMBIC, &i);
2721     usleep(240000);
2722 
2723     /* wait for respose, 2nd phase (2.1.6) */
2724     i = FREAD;
2725     ioctl(rodent.mfd, TIOCFLUSH, &i);
2726     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 1, RTS = 1 */
2727     ioctl(rodent.mfd, TIOCMBIS, &i);
2728 
2729     /* try to read something */
2730     FD_ZERO(&fds);
2731     FD_SET(rodent.mfd, &fds);
2732     timeout.tv_sec = 0;
2733     timeout.tv_usec = 240000;
2734     if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) {
2735 	debug("pnpwakeup1(): valid response in second phase.");
2736 	return TRUE;
2737     }
2738 
2739     return FALSE;
2740 }
2741 
2742 static int
2743 pnpwakeup2(void)
2744 {
2745     struct timeval timeout;
2746     fd_set fds;
2747     int i;
2748 
2749     /*
2750      * This is a simplified procedure; it simply toggles RTS.
2751      */
2752     debug("alternate probe...");
2753 
2754     ioctl(rodent.mfd, TIOCMGET, &i);
2755     i |= TIOCM_DTR;		/* DTR = 1 */
2756     i &= ~TIOCM_RTS;		/* RTS = 0 */
2757     ioctl(rodent.mfd, TIOCMSET, &i);
2758     usleep(240000);
2759 
2760     setmousespeed(1200, 1200, (CS7 | CREAD | CLOCAL | HUPCL));
2761 
2762     /* wait for respose */
2763     i = FREAD;
2764     ioctl(rodent.mfd, TIOCFLUSH, &i);
2765     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 1, RTS = 1 */
2766     ioctl(rodent.mfd, TIOCMBIS, &i);
2767 
2768     /* try to read something */
2769     FD_ZERO(&fds);
2770     FD_SET(rodent.mfd, &fds);
2771     timeout.tv_sec = 0;
2772     timeout.tv_usec = 240000;
2773     if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) > 0) {
2774 	debug("pnpwakeup2(): valid response.");
2775 	return TRUE;
2776     }
2777 
2778     return FALSE;
2779 }
2780 
2781 static int
2782 pnpgets(char *buf)
2783 {
2784     struct timeval timeout;
2785     fd_set fds;
2786     int begin;
2787     int i;
2788     char c;
2789 
2790     if (!pnpwakeup1() && !pnpwakeup2()) {
2791 	/*
2792 	 * According to PnP spec, we should set DTR = 1 and RTS = 0 while
2793 	 * in idle state.  But, `moused' shall set DTR = RTS = 1 and proceed,
2794 	 * assuming there is something at the port even if it didn't
2795 	 * respond to the PnP enumeration procedure.
2796 	 */
2797 	i = TIOCM_DTR | TIOCM_RTS;		/* DTR = 1, RTS = 1 */
2798 	ioctl(rodent.mfd, TIOCMBIS, &i);
2799 	return 0;
2800     }
2801 
2802     /* collect PnP COM device ID (2.1.7) */
2803     begin = -1;
2804     i = 0;
2805     usleep(240000);	/* the mouse must send `Begin ID' within 200msec */
2806     while (read(rodent.mfd, &c, 1) == 1) {
2807 	/* we may see "M", or "M3..." before `Begin ID' */
2808 	buf[i++] = c;
2809 	if ((c == 0x08) || (c == 0x28)) {	/* Begin ID */
2810 	    debug("begin-id %02x", c);
2811 	    begin = i - 1;
2812 	    break;
2813 	}
2814 	debug("%c %02x", c, c);
2815 	if (i >= 256)
2816 	    break;
2817     }
2818     if (begin < 0) {
2819 	/* we haven't seen `Begin ID' in time... */
2820 	goto connect_idle;
2821     }
2822 
2823     ++c;			/* make it `End ID' */
2824     for (;;) {
2825 	FD_ZERO(&fds);
2826 	FD_SET(rodent.mfd, &fds);
2827 	timeout.tv_sec = 0;
2828 	timeout.tv_usec = 240000;
2829 	if (select(FD_SETSIZE, &fds, NULL, NULL, &timeout) <= 0)
2830 	    break;
2831 
2832 	read(rodent.mfd, &buf[i], 1);
2833 	if (buf[i++] == c)	/* End ID */
2834 	    break;
2835 	if (i >= 256)
2836 	    break;
2837     }
2838     if (begin > 0) {
2839 	i -= begin;
2840 	bcopy(&buf[begin], &buf[0], i);
2841     }
2842     /* string may not be human readable... */
2843     debug("len:%d, '%-*.*s'", i, i, i, buf);
2844 
2845     if (buf[i - 1] == c)
2846 	return i;		/* a valid PnP string */
2847 
2848     /*
2849      * According to PnP spec, we should set DTR = 1 and RTS = 0 while
2850      * in idle state.  But, `moused' shall leave the modem control lines
2851      * as they are. See above.
2852      */
2853 connect_idle:
2854 
2855     /* we may still have something in the buffer */
2856     return ((i > 0) ? i : 0);
2857 }
2858 
2859 static int
2860 pnpparse(pnpid_t *id, char *buf, int len)
2861 {
2862     char s[3];
2863     int offset;
2864     int sum = 0;
2865     int i, j;
2866 
2867     id->revision = 0;
2868     id->eisaid = NULL;
2869     id->serial = NULL;
2870     id->class = NULL;
2871     id->compat = NULL;
2872     id->description = NULL;
2873     id->neisaid = 0;
2874     id->nserial = 0;
2875     id->nclass = 0;
2876     id->ncompat = 0;
2877     id->ndescription = 0;
2878 
2879     if ((buf[0] != 0x28) && (buf[0] != 0x08)) {
2880 	/* non-PnP mice */
2881 	switch(buf[0]) {
2882 	default:
2883 	    return FALSE;
2884 	case 'M': /* Microsoft */
2885 	    id->eisaid = "PNP0F01";
2886 	    break;
2887 	case 'H': /* MouseSystems */
2888 	    id->eisaid = "PNP0F04";
2889 	    break;
2890 	}
2891 	id->neisaid = strlen(id->eisaid);
2892 	id->class = "MOUSE";
2893 	id->nclass = strlen(id->class);
2894 	debug("non-PnP mouse '%c'", buf[0]);
2895 	return TRUE;
2896     }
2897 
2898     /* PnP mice */
2899     offset = 0x28 - buf[0];
2900 
2901     /* calculate checksum */
2902     for (i = 0; i < len - 3; ++i) {
2903 	sum += buf[i];
2904 	buf[i] += offset;
2905     }
2906     sum += buf[len - 1];
2907     for (; i < len; ++i)
2908 	buf[i] += offset;
2909     debug("PnP ID string: '%*.*s'", len, len, buf);
2910 
2911     /* revision */
2912     buf[1] -= offset;
2913     buf[2] -= offset;
2914     id->revision = ((buf[1] & 0x3f) << 6) | (buf[2] & 0x3f);
2915     debug("PnP rev %d.%02d", id->revision / 100, id->revision % 100);
2916 
2917     /* EISA vender and product ID */
2918     id->eisaid = &buf[3];
2919     id->neisaid = 7;
2920 
2921     /* option strings */
2922     i = 10;
2923     if (buf[i] == '\\') {
2924 	/* device serial # */
2925 	for (j = ++i; i < len; ++i) {
2926 	    if (buf[i] == '\\')
2927 		break;
2928 	}
2929 	if (i >= len)
2930 	    i -= 3;
2931 	if (i - j == 8) {
2932 	    id->serial = &buf[j];
2933 	    id->nserial = 8;
2934 	}
2935     }
2936     if (buf[i] == '\\') {
2937 	/* PnP class */
2938 	for (j = ++i; i < len; ++i) {
2939 	    if (buf[i] == '\\')
2940 		break;
2941 	}
2942 	if (i >= len)
2943 	    i -= 3;
2944 	if (i > j + 1) {
2945 	    id->class = &buf[j];
2946 	    id->nclass = i - j;
2947 	}
2948     }
2949     if (buf[i] == '\\') {
2950 	/* compatible driver */
2951 	for (j = ++i; i < len; ++i) {
2952 	    if (buf[i] == '\\')
2953 		break;
2954 	}
2955 	/*
2956 	 * PnP COM spec prior to v0.96 allowed '*' in this field,
2957 	 * it's not allowed now; just igore it.
2958 	 */
2959 	if (buf[j] == '*')
2960 	    ++j;
2961 	if (i >= len)
2962 	    i -= 3;
2963 	if (i > j + 1) {
2964 	    id->compat = &buf[j];
2965 	    id->ncompat = i - j;
2966 	}
2967     }
2968     if (buf[i] == '\\') {
2969 	/* product description */
2970 	for (j = ++i; i < len; ++i) {
2971 	    if (buf[i] == ';')
2972 		break;
2973 	}
2974 	if (i >= len)
2975 	    i -= 3;
2976 	if (i > j + 1) {
2977 	    id->description = &buf[j];
2978 	    id->ndescription = i - j;
2979 	}
2980     }
2981 
2982     /* checksum exists if there are any optional fields */
2983     if ((id->nserial > 0) || (id->nclass > 0)
2984 	|| (id->ncompat > 0) || (id->ndescription > 0)) {
2985 	debug("PnP checksum: 0x%X", sum);
2986 	sprintf(s, "%02X", sum & 0x0ff);
2987 	if (strncmp(s, &buf[len - 3], 2) != 0) {
2988 #if 0
2989 	    /*
2990 	     * I found some mice do not comply with the PnP COM device
2991 	     * spec regarding checksum... XXX
2992 	     */
2993 	    logwarnx("PnP checksum error", 0);
2994 	    return FALSE;
2995 #endif
2996 	}
2997     }
2998 
2999     return TRUE;
3000 }
3001 
3002 static symtab_t *
3003 pnpproto(pnpid_t *id)
3004 {
3005     symtab_t *t;
3006     int i, j;
3007 
3008     if (id->nclass > 0)
3009 	if (strncmp(id->class, "MOUSE", id->nclass) != 0 &&
3010 	    strncmp(id->class, "TABLET", id->nclass) != 0)
3011 	    /* this is not a mouse! */
3012 	    return NULL;
3013 
3014     if (id->neisaid > 0) {
3015 	t = gettoken(pnpprod, id->eisaid, id->neisaid);
3016 	if (t->val != MOUSE_PROTO_UNKNOWN)
3017 	    return t;
3018     }
3019 
3020     /*
3021      * The 'Compatible drivers' field may contain more than one
3022      * ID separated by ','.
3023      */
3024     if (id->ncompat <= 0)
3025 	return NULL;
3026     for (i = 0; i < id->ncompat; ++i) {
3027 	for (j = i; id->compat[i] != ','; ++i)
3028 	    if (i >= id->ncompat)
3029 		break;
3030 	if (i > j) {
3031 	    t = gettoken(pnpprod, id->compat + j, i - j);
3032 	    if (t->val != MOUSE_PROTO_UNKNOWN)
3033 		return t;
3034 	}
3035     }
3036 
3037     return NULL;
3038 }
3039 
3040 /* name/val mapping */
3041 
3042 static symtab_t *
3043 gettoken(symtab_t *tab, char *s, int len)
3044 {
3045     int i;
3046 
3047     for (i = 0; tab[i].name != NULL; ++i) {
3048 	if (strncmp(tab[i].name, s, len) == 0)
3049 	    break;
3050     }
3051     return &tab[i];
3052 }
3053 
3054 static char *
3055 gettokenname(symtab_t *tab, int val)
3056 {
3057     int i;
3058 
3059     for (i = 0; tab[i].name != NULL; ++i) {
3060 	if (tab[i].val == val)
3061 	    return tab[i].name;
3062     }
3063     return NULL;
3064 }
3065 
3066 
3067 /*
3068  * code to read from the Genius Kidspad tablet.
3069 
3070 The tablet responds to the COM PnP protocol 1.0 with EISA-ID KYE0005,
3071 and to pre-pnp probes (RTS toggle) with 'T' (tablet ?)
3072 9600, 8 bit, parity odd.
3073 
3074 The tablet puts out 5 bytes. b0 (mask 0xb8, value 0xb8) contains
3075 the proximity, tip and button info:
3076    (byte0 & 0x1)	true = tip pressed
3077    (byte0 & 0x2)	true = button pressed
3078    (byte0 & 0x40)	false = pen in proximity of tablet.
3079 
3080 The next 4 bytes are used for coordinates xl, xh, yl, yh (7 bits valid).
3081 
3082 Only absolute coordinates are returned, so we use the following approach:
3083 we store the last coordinates sent when the pen went out of the tablet,
3084 
3085 
3086  *
3087  */
3088 
3089 typedef enum {
3090     S_IDLE, S_PROXY, S_FIRST, S_DOWN, S_UP
3091 } k_status ;
3092 
3093 static int
3094 kidspad(u_char rxc, mousestatus_t *act)
3095 {
3096     static int buf[5];
3097     static int buflen = 0, b_prev = 0 , x_prev = -1, y_prev = -1 ;
3098     static k_status status = S_IDLE ;
3099     static struct timeval old, now ;
3100 
3101     int x, y ;
3102 
3103     if (buflen > 0 && (rxc & 0x80)) {
3104 	fprintf(stderr, "invalid code %d 0x%x\n", buflen, rxc);
3105 	buflen = 0 ;
3106     }
3107     if (buflen == 0 && (rxc & 0xb8) != 0xb8) {
3108 	fprintf(stderr, "invalid code 0 0x%x\n", rxc);
3109 	return 0 ; /* invalid code, no action */
3110     }
3111     buf[buflen++] = rxc ;
3112     if (buflen < 5)
3113 	return 0 ;
3114 
3115     buflen = 0 ; /* for next time... */
3116 
3117     x = buf[1]+128*(buf[2] - 7) ;
3118     if (x < 0) x = 0 ;
3119     y = 28*128 - (buf[3] + 128* (buf[4] - 7)) ;
3120     if (y < 0) y = 0 ;
3121 
3122     x /= 8 ;
3123     y /= 8 ;
3124 
3125     act->flags = 0 ;
3126     act->obutton = act->button ;
3127     act->dx = act->dy = act->dz = 0 ;
3128     gettimeofday(&now, NULL);
3129     if (buf[0] & 0x40) /* pen went out of reach */
3130 	status = S_IDLE ;
3131     else if (status == S_IDLE) { /* pen is newly near the tablet */
3132 	act->flags |= MOUSE_POSCHANGED ; /* force update */
3133 	status = S_PROXY ;
3134 	x_prev = x ;
3135 	y_prev = y ;
3136     }
3137     old = now ;
3138     act->dx = x - x_prev ;
3139     act->dy = y - y_prev ;
3140     if (act->dx || act->dy)
3141 	act->flags |= MOUSE_POSCHANGED ;
3142     x_prev = x ;
3143     y_prev = y ;
3144     if (b_prev != 0 && b_prev != buf[0]) { /* possibly record button change */
3145 	act->button = 0 ;
3146 	if (buf[0] & 0x01) /* tip pressed */
3147 	    act->button |= MOUSE_BUTTON1DOWN ;
3148 	if (buf[0] & 0x02) /* button pressed */
3149 	    act->button |= MOUSE_BUTTON2DOWN ;
3150 	act->flags |= MOUSE_BUTTONSCHANGED ;
3151     }
3152     b_prev = buf[0] ;
3153     return act->flags ;
3154 }
3155 
3156 static int
3157 gtco_digipad (u_char rxc, mousestatus_t *act)
3158 {
3159 	static u_char buf[5];
3160  	static int buflen = 0, b_prev = 0 , x_prev = -1, y_prev = -1 ;
3161 	static k_status status = S_IDLE ;
3162         int x, y;
3163 
3164 #define	GTCO_HEADER	0x80
3165 #define	GTCO_PROXIMITY	0x40
3166 #define	GTCO_START	(GTCO_HEADER|GTCO_PROXIMITY)
3167 #define	GTCO_BUTTONMASK	0x3c
3168 
3169 
3170 	if (buflen > 0 && ((rxc & GTCO_HEADER) != GTCO_HEADER)) {
3171 		fprintf(stderr, "invalid code %d 0x%x\n", buflen, rxc);
3172 		buflen = 0 ;
3173 	}
3174 	if (buflen == 0 && (rxc & GTCO_START) != GTCO_START) {
3175 		fprintf(stderr, "invalid code 0 0x%x\n", rxc);
3176 		return 0 ; /* invalid code, no action */
3177 	}
3178 
3179 	buf[buflen++] = rxc ;
3180 	if (buflen < 5)
3181 		return 0 ;
3182 
3183 	buflen = 0 ; /* for next time... */
3184 
3185 	x = ((buf[2] & ~GTCO_START) << 6 | (buf[1] & ~GTCO_START));
3186 	y = 4768 - ((buf[4] & ~GTCO_START) << 6 | (buf[3] & ~GTCO_START));
3187 
3188 	x /= 2.5;
3189 	y /= 2.5;
3190 
3191 	act->flags = 0 ;
3192 	act->obutton = act->button ;
3193 	act->dx = act->dy = act->dz = 0 ;
3194 
3195 	if ((buf[0] & 0x40) == 0) /* pen went out of reach */
3196 		status = S_IDLE ;
3197 	else if (status == S_IDLE) { /* pen is newly near the tablet */
3198 		act->flags |= MOUSE_POSCHANGED ; /* force update */
3199 		status = S_PROXY ;
3200 		x_prev = x ;
3201 		y_prev = y ;
3202 	}
3203 
3204 	act->dx = x - x_prev ;
3205 	act->dy = y - y_prev ;
3206 	if (act->dx || act->dy)
3207 		act->flags |= MOUSE_POSCHANGED ;
3208 	x_prev = x ;
3209 	y_prev = y ;
3210 
3211 	/* possibly record button change */
3212 	if (b_prev != 0 && b_prev != buf[0]) {
3213 		act->button = 0 ;
3214 		if (buf[0] & 0x04) /* tip pressed/yellow */
3215 			act->button |= MOUSE_BUTTON1DOWN ;
3216 		if (buf[0] & 0x08) /* grey/white */
3217 			act->button |= MOUSE_BUTTON2DOWN ;
3218 		if (buf[0] & 0x10) /* black/green */
3219 			act->button |= MOUSE_BUTTON3DOWN ;
3220 		if (buf[0] & 0x20) /* tip+grey/blue */
3221 			act->button |= MOUSE_BUTTON4DOWN ;
3222 		act->flags |= MOUSE_BUTTONSCHANGED ;
3223 	}
3224 	b_prev = buf[0] ;
3225 	return act->flags ;
3226 }
3227 
3228 static void
3229 mremote_serversetup()
3230 {
3231     struct sockaddr_un ad;
3232 
3233     /* Open a UNIX domain stream socket to listen for mouse remote clients */
3234     unlink(_PATH_MOUSEREMOTE);
3235 
3236     if ((rodent.mremsfd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
3237 	logerrx(1, "unable to create unix domain socket %s",_PATH_MOUSEREMOTE);
3238 
3239     umask(0111);
3240 
3241     bzero(&ad, sizeof(ad));
3242     ad.sun_family = AF_UNIX;
3243     strcpy(ad.sun_path, _PATH_MOUSEREMOTE);
3244 #ifndef SUN_LEN
3245 #define SUN_LEN(unp) (((char *)(unp)->sun_path - (char *)(unp)) + \
3246 		       strlen((unp)->path))
3247 #endif
3248     if (bind(rodent.mremsfd, (struct sockaddr *) &ad, SUN_LEN(&ad)) < 0)
3249 	logerrx(1, "unable to bind unix domain socket %s", _PATH_MOUSEREMOTE);
3250 
3251     listen(rodent.mremsfd, 1);
3252 }
3253 
3254 static void
3255 mremote_clientchg(int add)
3256 {
3257     struct sockaddr_un ad;
3258     int ad_len, fd;
3259 
3260     if (rodent.rtype != MOUSE_PROTO_X10MOUSEREM)
3261 	return;
3262 
3263     if (add) {
3264 	/*  Accept client connection, if we don't already have one  */
3265 	ad_len = sizeof(ad);
3266 	fd = accept(rodent.mremsfd, (struct sockaddr *) &ad, &ad_len);
3267 	if (fd < 0)
3268 	    logwarnx("failed accept on mouse remote socket");
3269 
3270 	if (rodent.mremcfd < 0) {
3271 	    rodent.mremcfd = fd;
3272 	    debug("remote client connect...accepted");
3273 	}
3274 	else {
3275 	    close(fd);
3276 	    debug("another remote client connect...disconnected");
3277 	}
3278     }
3279     else {
3280 	/* Client disconnected */
3281 	debug("remote client disconnected");
3282 	close(rodent.mremcfd);
3283 	rodent.mremcfd = -1;
3284     }
3285 }
3286