Home | History | Annotate | Line # | Download | only in moused
      1 /* $NetBSD: moused.c,v 1.33 2025/07/11 22:19:54 andvar Exp $ */
      2 /**
      3  ** Copyright (c) 1995 Michael Smith, All rights reserved.
      4  **
      5  ** Redistribution and use in source and binary forms, with or without
      6  ** modification, are permitted provided that the following conditions
      7  ** are met:
      8  ** 1. Redistributions of source code must retain the above copyright
      9  **    notice, this list of conditions and the following disclaimer as
     10  **    the first lines of this file unmodified.
     11  ** 2. Redistributions in binary form must reproduce the above copyright
     12  **    notice, this list of conditions and the following disclaimer in the
     13  **    documentation and/or other materials provided with the distribution.
     14  ** 3. All advertising materials mentioning features or use of this software
     15  **    must display the following acknowledgment:
     16  **      This product includes software developed by Michael Smith.
     17  ** 4. The name of the author may not be used to endorse or promote products
     18  **    derived from this software without specific prior written permission.
     19  **
     20  **
     21  ** THIS SOFTWARE IS PROVIDED BY Michael Smith ``AS IS'' AND ANY
     22  ** EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     24  ** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Michael Smith BE LIABLE FOR
     25  ** ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     26  ** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     27  ** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     28  ** BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     30  ** OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
     31  ** EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  **
     33  **/
     34 
     35 /**
     36  ** MOUSED.C
     37  **
     38  ** Mouse daemon : listens to a serial port, the bus mouse interface, or
     39  ** the PS/2 mouse port for mouse data stream, interprets data and passes
     40  ** ioctls off to the console driver.
     41  **
     42  ** The mouse interface functions are derived closely from the mouse
     43  ** handler in the XFree86 X server.  Many thanks to the XFree86 people
     44  ** for their great work!
     45  **
     46  **/
     47 
     48 #include <sys/cdefs.h>
     49 
     50 #ifndef lint
     51 __RCSID("$NetBSD: moused.c,v 1.33 2025/07/11 22:19:54 andvar Exp $");
     52 #endif /* not lint */
     53 
     54 #include <ctype.h>
     55 #include <err.h>
     56 #include <errno.h>
     57 #include <fcntl.h>
     58 #include <limits.h>
     59 #include <stdio.h>
     60 #include <stdlib.h>
     61 #include <stdarg.h>
     62 #include <string.h>
     63 #include <signal.h>
     64 #include <setjmp.h>
     65 #include <termios.h>
     66 #include <syslog.h>
     67 #include "mouse.h"
     68 #include <sys/ioctl.h>
     69 #include <dev/wscons/wsconsio.h>
     70 #include <sys/types.h>
     71 #include <sys/time.h>
     72 #include <sys/socket.h>
     73 #include <stdint.h>
     74 #include <sys/un.h>
     75 #include <poll.h>
     76 #include <unistd.h>
     77 
     78 #define MAX_CLICKTHRESHOLD	2000	/* 2 seconds */
     79 #define MAX_BUTTON2TIMEOUT	2000	/* 2 seconds */
     80 #define DFLT_CLICKTHRESHOLD	 500	/* 0.5 second */
     81 #define DFLT_BUTTON2TIMEOUT	 100	/* 0.1 second */
     82 
     83 /* Abort 3-button emulation delay after this many movement events. */
     84 #define BUTTON2_MAXMOVE	3
     85 
     86 #define TRUE		1
     87 #define FALSE		0
     88 
     89 #define MOUSE_XAXIS	(-1)
     90 #define MOUSE_YAXIS	(-2)
     91 
     92 /* Logitech PS2++ protocol */
     93 #define MOUSE_PS2PLUS_CHECKBITS(b)	\
     94 			((((b[2] & 0x03) << 2) | 0x02) == (b[1] & 0x0f))
     95 #define MOUSE_PS2PLUS_PACKET_TYPE(b)	\
     96 			(((b[0] & 0x30) >> 2) | ((b[1] & 0x30) >> 4))
     97 
     98 #define	ChordMiddle	0x0001
     99 #define Emulate3Button	0x0002
    100 #define ClearDTR	0x0004
    101 #define ClearRTS	0x0008
    102 #define NoPnP		0x0010
    103 
    104 #define ID_NONE		0
    105 #define ID_PORT		1
    106 #define ID_IF		2
    107 #define ID_TYPE 	4
    108 #define ID_MODEL	8
    109 #define ID_ALL		(ID_PORT | ID_IF | ID_TYPE | ID_MODEL)
    110 
    111 /* structures */
    112 
    113 /* symbol table entry */
    114 typedef struct {
    115     const char *name;
    116     int val;
    117     int val2;
    118 } symtab_t;
    119 
    120 /* serial PnP ID string */
    121 typedef struct {
    122     int revision;	/* PnP revision, 100 for 1.00 */
    123     const char *eisaid;	/* EISA ID including mfr ID and product ID */
    124     const char *serial;	/* serial No, optional */
    125     const char *class;	/* device class, optional */
    126     const char *compat;	/* list of compatible drivers, optional */
    127     const char *description;	/* product description, optional */
    128     int neisaid;	/* length of the above fields... */
    129     int nserial;
    130     int nclass;
    131     int ncompat;
    132     int ndescription;
    133 } pnpid_t;
    134 
    135 /* global variables */
    136 
    137 static int	dbg = 0;
    138 static int	nodaemon = FALSE;
    139 static int	background = FALSE;
    140 static int	identify = ID_NONE;
    141 static const char *pidfile = "/var/run/moused.pid";
    142 
    143 /* local variables */
    144 
    145 /* interface (the table must be ordered by MOUSE_IF_XXX in mouse.h) */
    146 static symtab_t rifs[] = {
    147     { "serial",		MOUSE_IF_SERIAL, 0 },
    148     { "bus",		MOUSE_IF_BUS, 0 },
    149     { "inport",		MOUSE_IF_INPORT, 0 },
    150     { "ps/2",		MOUSE_IF_PS2, 0 },
    151     { "sysmouse",	MOUSE_IF_SYSMOUSE, 0 },
    152     { "usb",		MOUSE_IF_USB, 0 },
    153     { NULL,		MOUSE_IF_UNKNOWN, 0 },
    154 };
    155 
    156 /* types (the table must be ordered by MOUSE_PROTO_XXX in mouse.h) */
    157 static const char *rnames[] = {
    158     "microsoft",
    159     "mousesystems",
    160     "logitech",
    161     "mmseries",
    162     "mouseman",
    163     "busmouse",
    164     "inportmouse",
    165     "ps/2",
    166     "mmhitab",
    167     "glidepoint",
    168     "intellimouse",
    169     "thinkingmouse",
    170     "sysmouse",
    171     "x10mouseremote",
    172     "kidspad",
    173 #if notyet
    174     "mariqua",
    175 #endif
    176     NULL
    177 };
    178 
    179 /* models */
    180 static symtab_t	rmodels[] = {
    181     { "NetScroll",		MOUSE_MODEL_NETSCROLL, 0 },
    182     { "NetMouse/NetScroll Optical", MOUSE_MODEL_NET, 0 },
    183     { "GlidePoint",		MOUSE_MODEL_GLIDEPOINT, 0 },
    184     { "ThinkingMouse",		MOUSE_MODEL_THINK, 0 },
    185     { "IntelliMouse",		MOUSE_MODEL_INTELLI, 0 },
    186     { "EasyScroll/SmartScroll",	MOUSE_MODEL_EASYSCROLL, 0 },
    187     { "MouseMan+",		MOUSE_MODEL_MOUSEMANPLUS, 0 },
    188     { "Kidspad",		MOUSE_MODEL_KIDSPAD, 0 },
    189     { "VersaPad",		MOUSE_MODEL_VERSAPAD, 0 },
    190     { "IntelliMouse Explorer",	MOUSE_MODEL_EXPLORER, 0 },
    191     { "4D Mouse",		MOUSE_MODEL_4D, 0 },
    192     { "4D+ Mouse",		MOUSE_MODEL_4DPLUS, 0 },
    193     { "generic",		MOUSE_MODEL_GENERIC, 0 },
    194     { NULL, 			MOUSE_MODEL_UNKNOWN, 0 },
    195 };
    196 
    197 /* PnP EISA/product IDs */
    198 static symtab_t pnpprod[] = {
    199     /* Kensignton ThinkingMouse */
    200     { "KML0001",	MOUSE_PROTO_THINK,	MOUSE_MODEL_THINK },
    201     /* MS IntelliMouse */
    202     { "MSH0001",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
    203     /* MS IntelliMouse TrackBall */
    204     { "MSH0004",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
    205     /* Tremon Wheel Mouse MUSD */
    206     { "HTK0001",        MOUSE_PROTO_INTELLI,    MOUSE_MODEL_INTELLI },
    207     /* Genius PnP Mouse */
    208     { "KYE0001",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
    209     /* MouseSystems SmartScroll Mouse (OEM from Genius?) */
    210     { "KYE0002",	MOUSE_PROTO_MS,		MOUSE_MODEL_EASYSCROLL },
    211     /* Genius NetMouse */
    212     { "KYE0003",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_NET },
    213     /* Genius Kidspad, Easypad and other tablets */
    214     { "KYE0005",	MOUSE_PROTO_KIDSPAD,	MOUSE_MODEL_KIDSPAD },
    215     /* Genius EZScroll */
    216     { "KYEEZ00",	MOUSE_PROTO_MS,		MOUSE_MODEL_EASYSCROLL },
    217     /* Logitech Cordless MouseMan Wheel */
    218     { "LGI8033",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
    219     /* Logitech MouseMan (new 4 button model) */
    220     { "LGI800C",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
    221     /* Logitech MouseMan+ */
    222     { "LGI8050",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
    223     /* Logitech FirstMouse+ */
    224     { "LGI8051",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_MOUSEMANPLUS },
    225     /* Logitech serial */
    226     { "LGI8001",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
    227     /* A4 Tech 4D/4D+ Mouse */
    228     { "A4W0005",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_4D },
    229     /* 8D Scroll Mouse */
    230     { "PEC9802",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
    231     /* Mitsumi Wireless Scroll Mouse */
    232     { "MTM6401",	MOUSE_PROTO_INTELLI,	MOUSE_MODEL_INTELLI },
    233 
    234     /* MS bus */
    235     { "PNP0F00",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
    236     /* MS serial */
    237     { "PNP0F01",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
    238     /* MS InPort */
    239     { "PNP0F02",	MOUSE_PROTO_INPORT,	MOUSE_MODEL_GENERIC },
    240     /* MS PS/2 */
    241     { "PNP0F03",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
    242     /*
    243      * EzScroll returns PNP0F04 in the compatible device field; but it
    244      * doesn't look compatible... XXX
    245      */
    246     /* MouseSystems */
    247     { "PNP0F04",	MOUSE_PROTO_MSC,	MOUSE_MODEL_GENERIC },
    248     /* MouseSystems */
    249     { "PNP0F05",	MOUSE_PROTO_MSC,	MOUSE_MODEL_GENERIC },
    250 #if notyet
    251     /* Genius Mouse */
    252     { "PNP0F06",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
    253     /* Genius Mouse */
    254     { "PNP0F07",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
    255 #endif
    256     /* Logitech serial */
    257     { "PNP0F08",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
    258     /* MS BallPoint serial */
    259     { "PNP0F09",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
    260     /* MS PnP serial */
    261     { "PNP0F0A",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
    262     /* MS PnP BallPoint serial */
    263     { "PNP0F0B",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
    264     /* MS serial compatible */
    265     { "PNP0F0C",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
    266     /* MS InPort compatible */
    267     { "PNP0F0D",	MOUSE_PROTO_INPORT,	MOUSE_MODEL_GENERIC },
    268     /* MS PS/2 compatible */
    269     { "PNP0F0E",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
    270     /* MS BallPoint compatible */
    271     { "PNP0F0F",	MOUSE_PROTO_MS,		MOUSE_MODEL_GENERIC },
    272 #if notyet
    273     /* TI QuickPort */
    274     { "PNP0F10",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
    275 #endif
    276     /* MS bus compatible */
    277     { "PNP0F11",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
    278     /* Logitech PS/2 */
    279     { "PNP0F12",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
    280     /* PS/2 */
    281     { "PNP0F13",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
    282 #if notyet
    283     /* MS Kids Mouse */
    284     { "PNP0F14",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
    285 #endif
    286     /* Logitech bus */
    287     { "PNP0F15",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
    288 #if notyet
    289     /* Logitech SWIFT */
    290     { "PNP0F16",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
    291 #endif
    292     /* Logitech serial compat */
    293     { "PNP0F17",	MOUSE_PROTO_LOGIMOUSEMAN, MOUSE_MODEL_GENERIC },
    294     /* Logitech bus compatible */
    295     { "PNP0F18",	MOUSE_PROTO_BUS,	MOUSE_MODEL_GENERIC },
    296     /* Logitech PS/2 compatible */
    297     { "PNP0F19",	MOUSE_PROTO_PS2,	MOUSE_MODEL_GENERIC },
    298 #if notyet
    299     /* Logitech SWIFT compatible */
    300     { "PNP0F1A",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
    301     /* HP Omnibook */
    302     { "PNP0F1B",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
    303     /* Compaq LTE TrackBall PS/2 */
    304     { "PNP0F1C",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
    305     /* Compaq LTE TrackBall serial */
    306     { "PNP0F1D",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
    307     /* MS Kidts Trackball */
    308     { "PNP0F1E",	MOUSE_PROTO_???,	MOUSE_MODEL_GENERIC },
    309 #endif
    310     /* Interlink VersaPad */
    311     { "LNK0001",	MOUSE_PROTO_VERSAPAD,	MOUSE_MODEL_VERSAPAD },
    312 
    313     { NULL,		MOUSE_PROTO_UNKNOWN,	MOUSE_MODEL_GENERIC },
    314 };
    315 
    316 /* the table must be ordered by MOUSE_PROTO_XXX in mouse.h */
    317 static unsigned short rodentcflags[] =
    318 {
    319     (CS7	           | CREAD | CLOCAL | HUPCL ),	/* MicroSoft */
    320     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL ),	/* MouseSystems */
    321     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL ),	/* Logitech */
    322     (CS8 | PARENB | PARODD | CREAD | CLOCAL | HUPCL ),	/* MMSeries */
    323     (CS7		   | CREAD | CLOCAL | HUPCL ),	/* MouseMan */
    324     0,							/* Bus */
    325     0,							/* InPort */
    326     0,							/* PS/2 */
    327     (CS8		   | CREAD | CLOCAL | HUPCL ),	/* MM HitTablet */
    328     (CS7	           | CREAD | CLOCAL | HUPCL ),	/* GlidePoint */
    329     (CS7                   | CREAD | CLOCAL | HUPCL ),	/* IntelliMouse */
    330     (CS7                   | CREAD | CLOCAL | HUPCL ),	/* Thinking Mouse */
    331     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL ),	/* sysmouse */
    332     (CS7	           | CREAD | CLOCAL | HUPCL ),	/* X10 MouseRemote */
    333     (CS8 | PARENB | PARODD | CREAD | CLOCAL | HUPCL ),	/* kidspad etc. */
    334     (CS8		   | CREAD | CLOCAL | HUPCL ),	/* VersaPad */
    335 #if notyet
    336     (CS8 | CSTOPB	   | CREAD | CLOCAL | HUPCL ),	/* Mariqua */
    337 #endif
    338 };
    339 
    340 static struct rodentparam {
    341     int flags;
    342     char *portname;		/* /dev/XXX */
    343     int rtype;			/* MOUSE_PROTO_XXX */
    344     int level;			/* operation level: 0 or greater */
    345     int baudrate;
    346     int rate;			/* report rate */
    347     int resolution;		/* MOUSE_RES_XXX or a positive number */
    348     int zmap[4];		/* MOUSE_{X|Y}AXIS or a button number */
    349     int wmode;			/* wheel mode button number */
    350     int mfd;			/* mouse file descriptor */
    351     int cfd;			/* /dev/wsmousectl file descriptor */
    352     int mremsfd;		/* mouse remote server file descriptor */
    353     int mremcfd;		/* mouse remote client file descriptor */
    354     long clickthreshold;	/* double click speed in msec */
    355     long button2timeout;	/* 3 button emulation timeout */
    356     mousehw_t hw;		/* mouse device hardware information */
    357     mousemode_t mode;		/* protocol information */
    358     float accelx;		/* Acceleration in the X axis */
    359     float accely;		/* Acceleration in the Y axis */
    360 } rodent = {
    361     .flags = 0,
    362     .portname = NULL,
    363     .rtype = MOUSE_PROTO_UNKNOWN,
    364     .level = -1,
    365     .baudrate = 1200,
    366     .rate = 0,
    367     .resolution = MOUSE_RES_UNKNOWN,
    368     .zmap = { 0, 0, 0, 0 },
    369     .wmode = 0,
    370     .mfd = -1,
    371     .cfd = -1,
    372     .mremsfd = -1,
    373     .mremcfd = -1,
    374     .clickthreshold = DFLT_CLICKTHRESHOLD,
    375     .button2timeout = DFLT_BUTTON2TIMEOUT,
    376     .accelx = 1.0,
    377     .accely = 1.0,
    378 };
    379 
    380 /* button status */
    381 struct button_state {
    382     int count;		/* 0: up, 1: single click, 2: double click,... */
    383     struct timeval tv;	/* timestamp on the last button event */
    384 };
    385 static struct button_state	bstate[MOUSE_MAXBUTTON]; /* button state */
    386 static struct button_state	*mstate[MOUSE_MAXBUTTON];/* mapped button st.*/
    387 static struct button_state	zstate[4];		 /* Z/W axis state */
    388 
    389 /* state machine for 3 button emulation */
    390 
    391 #define S0	0	/* start */
    392 #define S1	1	/* button 1 delayed down */
    393 #define S2	2	/* button 3 delayed down */
    394 #define S3	3	/* both buttons down -> button 2 down */
    395 #define S4	4	/* button 1 delayed up */
    396 #define S5	5	/* button 1 down */
    397 #define S6	6	/* button 3 down */
    398 #define S7	7	/* both buttons down */
    399 #define S8	8	/* button 3 delayed up */
    400 #define S9	9	/* button 1 or 3 up after S3 */
    401 
    402 #define A(b1, b3)	(((b1) ? 2 : 0) | ((b3) ? 1 : 0))
    403 #define A_TIMEOUT	4
    404 #define S_DELAYED(st)	(states[st].s[A_TIMEOUT] != (st))
    405 
    406 static struct {
    407     int s[A_TIMEOUT + 1];
    408     int buttons;
    409     int mask;
    410     int timeout;
    411 } states[10] = {
    412     /* S0 */
    413     { { S0, S2, S1, S3, S0 }, 0, ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN), FALSE },
    414     /* S1 */
    415     { { S4, S2, S1, S3, S5 }, 0, ~MOUSE_BUTTON1DOWN, FALSE },
    416     /* S2 */
    417     { { S8, S2, S1, S3, S6 }, 0, ~MOUSE_BUTTON3DOWN, FALSE },
    418     /* S3 */
    419     { { S0, S9, S9, S3, S3 }, MOUSE_BUTTON2DOWN, ~0, FALSE },
    420     /* S4 */
    421     { { S0, S2, S1, S3, S0 }, MOUSE_BUTTON1DOWN, ~0, TRUE },
    422     /* S5 */
    423     { { S0, S2, S5, S7, S5 }, MOUSE_BUTTON1DOWN, ~0, FALSE },
    424     /* S6 */
    425     { { S0, S6, S1, S7, S6 }, MOUSE_BUTTON3DOWN, ~0, FALSE },
    426     /* S7 */
    427     { { S0, S6, S5, S7, S7 }, MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN, ~0, FALSE },
    428     /* S8 */
    429     { { S0, S2, S1, S3, S0 }, MOUSE_BUTTON3DOWN, ~0, TRUE },
    430     /* S9 */
    431     { { S0, S9, S9, S3, S9 }, 0, ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN), FALSE },
    432 };
    433 static int		mouse_button_state;
    434 static struct timeval	mouse_button_state_tv;
    435 static int		mouse_move_delayed;
    436 
    437 static jmp_buf env;
    438 
    439 /* function prototypes */
    440 
    441 static void	moused(const char *);
    442 __dead static void	hup(int sig);
    443 __dead static void	cleanup(int sig);
    444 __dead static void	usage(void);
    445 
    446 static int	r_identify(void);
    447 static const char *r_if(int type);
    448 static const char *r_name(int type);
    449 static const char *r_model(int model);
    450 static void	r_init(void);
    451 static int	r_protocol(u_char b, mousestatus_t *act);
    452 static int	r_statetrans(mousestatus_t *a1, mousestatus_t *a2, int trans);
    453 static int	r_installmap(char *arg);
    454 static void	r_map(mousestatus_t *act1, mousestatus_t *act2);
    455 static void	r_timestamp(mousestatus_t *act);
    456 static int	r_timeout(void);
    457 static void	setmousespeed(int old, int new, unsigned cflag);
    458 
    459 static int	pnpwakeup1(void);
    460 static int	pnpwakeup2(void);
    461 static int	pnpgets(char *buf);
    462 static int	pnpparse(pnpid_t *id, char *buf, int len);
    463 static symtab_t	*pnpproto(pnpid_t *id);
    464 
    465 static symtab_t	*gettoken(symtab_t *tab, const char *s, int len);
    466 static const char *gettokenname(symtab_t *tab, int val);
    467 
    468 static void wsev(int ty, int val);
    469 
    470 static int kidspad(u_char rxc, mousestatus_t *act);
    471 
    472 __printflike(1, 2) static void
    473 debug(const char *fmt, ...)
    474 {
    475 	va_list ap;
    476 
    477 	va_start(ap, fmt);
    478 	if (dbg && nodaemon)
    479 		vwarnx(fmt, ap);
    480 	va_end(ap);
    481 }
    482 
    483 __dead __printflike(2, 3) static void
    484 logerr(int e, const char *fmt, ...)
    485 {
    486 	va_list ap;
    487 
    488 	va_start(ap, fmt);
    489 	if (background) {
    490 		int saveerrno = errno;
    491 		vsyslog(LOG_DAEMON | LOG_ERR, fmt, ap);
    492 		errno = saveerrno;
    493 		syslog(LOG_DAEMON | LOG_ERR, "%m");
    494 		exit(e);
    495 	} else
    496 		verr(e, fmt, ap);
    497 	va_end(ap);
    498 }
    499 
    500 __printflike(1, 2) static void
    501 logwarn(const char *fmt, ...)
    502 {
    503 	va_list ap;
    504 
    505 	va_start(ap, fmt);
    506 	if (background) {
    507 		int saveerrno = errno;
    508 		vsyslog(LOG_DAEMON | LOG_WARNING, fmt, ap);
    509 		errno = saveerrno;
    510 		syslog(LOG_DAEMON | LOG_WARNING, "%m");
    511 	} else
    512 		vwarn(fmt, ap);
    513 	va_end(ap);
    514 }
    515 
    516 __printflike(1, 2) static void
    517 logwarnx(const char *fmt, ...)
    518 {
    519 	va_list ap;
    520 
    521 	va_start(ap, fmt);
    522 	if (background)
    523 		vsyslog(LOG_DAEMON | LOG_WARNING, fmt, ap);
    524 	else
    525 		vwarnx(fmt, ap);
    526 	va_end(ap);
    527 }
    528 
    529 int
    530 main(int argc, char *argv[])
    531 {
    532     int c;
    533     int	i;
    534     int	j;
    535     const char * volatile ctldev = "/dev/wsmuxctl0";
    536 
    537     for (i = 0; i < MOUSE_MAXBUTTON; ++i)
    538 	mstate[i] = &bstate[i];
    539 
    540     while((c = getopt(argc,argv,"3DE:F:I:PRS:W:a:cdfhi:l:m:p:r:st:w:z:")) != -1)
    541 	switch(c) {
    542 
    543 	case 'W':
    544 	    ctldev = optarg;
    545 	    break;
    546 
    547 	case '3':
    548 	    rodent.flags |= Emulate3Button;
    549 	    break;
    550 
    551 	case 'E':
    552 	    rodent.button2timeout = atoi(optarg);
    553 	    if ((rodent.button2timeout < 0) ||
    554 	        (rodent.button2timeout > MAX_BUTTON2TIMEOUT)) {
    555 	        warnx("invalid argument `%s'", optarg);
    556 	        usage();
    557 	    }
    558 	    break;
    559 
    560 	case 'a':
    561 	    i = sscanf(optarg, "%f,%f", &rodent.accelx, &rodent.accely);
    562 	    if (i == 0) {
    563 		warnx("invalid acceleration argument '%s'", optarg);
    564 		usage();
    565 	    }
    566 
    567 	    if (i == 1)
    568 		rodent.accely = rodent.accelx;
    569 
    570 	    break;
    571 
    572 	case 'c':
    573 	    rodent.flags |= ChordMiddle;
    574 	    break;
    575 
    576 	case 'd':
    577 	    ++dbg;
    578 	    break;
    579 
    580 	case 'f':
    581 	    nodaemon = TRUE;
    582 	    break;
    583 
    584 	case 'i':
    585 	    if (strcmp(optarg, "all") == 0)
    586 	        identify = ID_ALL;
    587 	    else if (strcmp(optarg, "port") == 0)
    588 	        identify = ID_PORT;
    589 	    else if (strcmp(optarg, "if") == 0)
    590 	        identify = ID_IF;
    591 	    else if (strcmp(optarg, "type") == 0)
    592 	        identify = ID_TYPE;
    593 	    else if (strcmp(optarg, "model") == 0)
    594 	        identify = ID_MODEL;
    595 	    else {
    596 	        warnx("invalid argument `%s'", optarg);
    597 	        usage();
    598 	    }
    599 	    nodaemon = TRUE;
    600 	    break;
    601 
    602 	case 'l':
    603 	    rodent.level = atoi(optarg);
    604 	    if ((rodent.level < 0) || (rodent.level > 4)) {
    605 	        warnx("invalid argument `%s'", optarg);
    606 	        usage();
    607 	    }
    608 	    break;
    609 
    610 	case 'm':
    611 	    if (!r_installmap(optarg)) {
    612 	        warnx("invalid argument `%s'", optarg);
    613 	        usage();
    614 	    }
    615 	    break;
    616 
    617 	case 'p':
    618 	    rodent.portname = optarg;
    619 	    break;
    620 
    621 	case 'r':
    622 	    if (strcmp(optarg, "high") == 0)
    623 	        rodent.resolution = MOUSE_RES_HIGH;
    624 	    else if (strcmp(optarg, "medium-high") == 0)
    625 	        rodent.resolution = MOUSE_RES_HIGH;
    626 	    else if (strcmp(optarg, "medium-low") == 0)
    627 	        rodent.resolution = MOUSE_RES_MEDIUMLOW;
    628 	    else if (strcmp(optarg, "low") == 0)
    629 	        rodent.resolution = MOUSE_RES_LOW;
    630 	    else if (strcmp(optarg, "default") == 0)
    631 	        rodent.resolution = MOUSE_RES_DEFAULT;
    632 	    else {
    633 	        rodent.resolution = atoi(optarg);
    634 	        if (rodent.resolution <= 0) {
    635 	            warnx("invalid argument `%s'", optarg);
    636 	            usage();
    637 	        }
    638 	    }
    639 	    break;
    640 
    641 	case 's':
    642 	    rodent.baudrate = 9600;
    643 	    break;
    644 
    645 	case 'w':
    646 	    i = atoi(optarg);
    647 	    if ((i <= 0) || (i > MOUSE_MAXBUTTON)) {
    648 		warnx("invalid argument `%s'", optarg);
    649 		usage();
    650 	    }
    651 	    rodent.wmode = 1 << (i - 1);
    652 	    break;
    653 
    654 	case 'z':
    655 	    if (strcmp(optarg, "x") == 0)
    656 		rodent.zmap[0] = MOUSE_XAXIS;
    657 	    else if (strcmp(optarg, "y") == 0)
    658 		rodent.zmap[0] = MOUSE_YAXIS;
    659             else {
    660 		i = atoi(optarg);
    661 		/*
    662 		 * Use button i for negative Z axis movement and
    663 		 * button (i + 1) for positive Z axis movement.
    664 		 */
    665 		if ((i <= 0) || (i > MOUSE_MAXBUTTON - 1)) {
    666 	            warnx("invalid argument `%s'", optarg);
    667 	            usage();
    668 		}
    669 		rodent.zmap[0] = i;
    670 		rodent.zmap[1] = i + 1;
    671 		debug("optind: %d, optarg: '%s'", optind, optarg);
    672 		for (j = 1; j < 4; ++j) {
    673 		    if ((optind >= argc) || !isdigit((unsigned char)*argv[optind]))
    674 			break;
    675 		    i = atoi(argv[optind]);
    676 		    if ((i <= 0) || (i > MOUSE_MAXBUTTON - 1)) {
    677 			warnx("invalid argument `%s'", argv[optind]);
    678 			usage();
    679 		    }
    680 		    rodent.zmap[j] = i;
    681 		    ++optind;
    682 		}
    683 		if ((rodent.zmap[2] != 0) && (rodent.zmap[3] == 0))
    684 		    rodent.zmap[3] = rodent.zmap[2] + 1;
    685 	    }
    686 	    break;
    687 
    688 	case 'D':
    689 	    rodent.flags |= ClearDTR;
    690 	    break;
    691 
    692 	case 'F':
    693 	    rodent.rate = atoi(optarg);
    694 	    if (rodent.rate <= 0) {
    695 	        warnx("invalid argument `%s'", optarg);
    696 	        usage();
    697 	    }
    698 	    break;
    699 
    700 	case 'I':
    701 	    pidfile = optarg;
    702 	    break;
    703 
    704 	case 'P':
    705 	    rodent.flags |= NoPnP;
    706 	    break;
    707 
    708 	case 'R':
    709 	    rodent.flags |= ClearRTS;
    710 	    break;
    711 
    712 	case 'S':
    713 	    rodent.baudrate = atoi(optarg);
    714 	    if (rodent.baudrate <= 0) {
    715 	        warnx("invalid argument `%s'", optarg);
    716 	        usage();
    717 	    }
    718 	    debug("rodent baudrate %d", rodent.baudrate);
    719 	    break;
    720 
    721 	case 't':
    722 	    if (strcmp(optarg, "auto") == 0) {
    723 		rodent.rtype = MOUSE_PROTO_UNKNOWN;
    724 		rodent.flags &= ~NoPnP;
    725 		rodent.level = -1;
    726 		break;
    727 	    }
    728 	    for (i = 0; rnames[i]; i++)
    729 		if (strcmp(optarg, rnames[i]) == 0) {
    730 		    rodent.rtype = i;
    731 		    rodent.flags |= NoPnP;
    732 		    rodent.level = (i == MOUSE_PROTO_SYSMOUSE) ? 1 : 0;
    733 		    break;
    734 		}
    735 	    if (rnames[i])
    736 		break;
    737 	    warnx("no such mouse type `%s'", optarg);
    738 	    usage();
    739 
    740 	case 'h':
    741 	case '?':
    742 	default:
    743 	    usage();
    744 	}
    745 
    746     /* fix Z axis mapping */
    747     for (i = 0; i < 4; ++i) {
    748 	if (rodent.zmap[i] > 0) {
    749 	    for (j = 0; j < MOUSE_MAXBUTTON; ++j) {
    750 		if (mstate[j] == &bstate[rodent.zmap[i] - 1])
    751 		    mstate[j] = &zstate[i];
    752 	    }
    753 	    rodent.zmap[i] = 1 << (rodent.zmap[i] - 1);
    754 	}
    755     }
    756 
    757     /* the default port name */
    758     switch(rodent.rtype) {
    759     case MOUSE_PROTO_INPORT:
    760         /* INPORT and BUS are the same... */
    761 	rodent.rtype = MOUSE_PROTO_BUS;
    762 	/* FALL THROUGH */
    763     default:
    764 	if (rodent.portname)
    765 	    break;
    766 	warnx("no port name specified");
    767 	usage();
    768     }
    769 
    770     for (;;) {
    771 	if (setjmp(env) == 0) {
    772 	    signal(SIGHUP, hup);
    773 	    signal(SIGINT , cleanup);
    774 	    signal(SIGQUIT, cleanup);
    775 	    signal(SIGTERM, cleanup);
    776             if ((rodent.mfd = open(rodent.portname, O_RDWR | O_NONBLOCK, 0))
    777 		== -1)
    778 	        logerr(1, "unable to open %s", rodent.portname);
    779             if (r_identify() == MOUSE_PROTO_UNKNOWN) {
    780 	        logwarnx("cannot determine mouse type on %s", rodent.portname);
    781 	        close(rodent.mfd);
    782 	        rodent.mfd = -1;
    783             }
    784 
    785 	    /* print some information */
    786             if (identify != ID_NONE) {
    787 		if (identify == ID_ALL)
    788                     printf("%s %s %s %s\n",
    789 		        rodent.portname, r_if(rodent.hw.iftype),
    790 		        r_name(rodent.rtype), r_model(rodent.hw.model));
    791 		else if (identify & ID_PORT)
    792 		    printf("%s\n", rodent.portname);
    793 		else if (identify & ID_IF)
    794 		    printf("%s\n", r_if(rodent.hw.iftype));
    795 		else if (identify & ID_TYPE)
    796 		    printf("%s\n", r_name(rodent.rtype));
    797 		else if (identify & ID_MODEL)
    798 		    printf("%s\n", r_model(rodent.hw.model));
    799 		exit(0);
    800 	    } else {
    801                 debug("port: %s  interface: %s  type: %s  model: %s",
    802 		    rodent.portname, r_if(rodent.hw.iftype),
    803 		    r_name(rodent.rtype), r_model(rodent.hw.model));
    804 	    }
    805 
    806 	    if (rodent.mfd == -1) {
    807 	        /*
    808 	         * We cannot continue because of error.  Exit if the
    809 		 * program has not become a daemon.  Otherwise, block
    810 		 * until the user corrects the problem and issues SIGHUP.
    811 	         */
    812 	        if (!background)
    813 		    exit(1);
    814 	        sigpause(0);
    815 	    }
    816 
    817             r_init();			/* call init function */
    818 	    moused(ctldev);
    819 	}
    820 
    821 	if (rodent.mfd != -1)
    822 	    close(rodent.mfd);
    823 	if (rodent.cfd != -1)
    824 	    close(rodent.cfd);
    825 	rodent.mfd = rodent.cfd = -1;
    826     }
    827     /* NOT REACHED */
    828 
    829     exit(0);
    830 }
    831 
    832 static void
    833 wsev(int ty, int val)
    834 {
    835     struct wscons_event ev;
    836 
    837     ev.type = ty;
    838     ev.value = val;
    839     if (dbg)
    840 	printf("wsev: type=%d value=%d\n", ty, val);
    841     if (ioctl(rodent.cfd, WSMUXIO_INJECTEVENT, &ev) < 0)
    842 	logwarn("muxio inject event");
    843 }
    844 
    845 static void
    846 moused(const char *wsm)
    847 {
    848     mousestatus_t action0;		/* original mouse action */
    849     mousestatus_t action;		/* interrim buffer */
    850     mousestatus_t action2;		/* mapped action */
    851     int lastbutton = 0;
    852     int button;
    853     struct pollfd set[3];
    854     u_char b;
    855     FILE *fp;
    856     int flags;
    857     int c;
    858     int i;
    859 
    860     if ((rodent.cfd = open(wsm, O_WRONLY, 0)) == -1)
    861 	logerr(1, "cannot open %s", wsm);
    862 
    863     if (!nodaemon && !background) {
    864 	if (daemon(0, 0)) {
    865 	    logerr(1, "failed to become a daemon");
    866 	} else {
    867 	    background = TRUE;
    868 	    fp = fopen(pidfile, "w");
    869 	    if (fp != NULL) {
    870 		fprintf(fp, "%d\n", getpid());
    871 		fclose(fp);
    872 	    }
    873 	}
    874     }
    875 
    876     /* clear mouse data */
    877     bzero(&action0, sizeof(action0));
    878     bzero(&action, sizeof(action));
    879     bzero(&action2, sizeof(action2));
    880     mouse_button_state = S0;
    881     gettimeofday(&mouse_button_state_tv, NULL);
    882     mouse_move_delayed = 0;
    883     for (i = 0; i < MOUSE_MAXBUTTON; ++i) {
    884 	bstate[i].count = 0;
    885 	bstate[i].tv = mouse_button_state_tv;
    886     }
    887     for (i = 0; i < (int)(sizeof(zstate)/sizeof(zstate[0])); ++i) {
    888 	zstate[i].count = 0;
    889 	zstate[i].tv = mouse_button_state_tv;
    890     }
    891     flags = 0;
    892 
    893     /* process mouse data */
    894     for (;;) {
    895 
    896 	set[0].fd = rodent.mfd;
    897 	set[0].events = POLLIN;
    898 	set[1].fd = rodent.mremsfd;
    899 	set[1].events = POLLIN;
    900 	set[2].fd = rodent.mremcfd;
    901 	set[2].events = POLLIN;
    902 
    903 	c = poll(set, 3, (rodent.flags & Emulate3Button) ? 20 : INFTIM);
    904 	if (c < 0) {                    /* error */
    905 	    logwarn("failed to read from mouse");
    906 	    continue;
    907 	} else if (c == 0) {            /* timeout */
    908 	    /* assert(rodent.flags & Emulate3Button) */
    909 	    action0.button = action0.obutton;
    910 	    action0.dx = action0.dy = action0.dz = 0;
    911 	    action0.flags = flags = 0;
    912 	    if (r_timeout() && r_statetrans(&action0, &action, A_TIMEOUT)) {
    913 		if (dbg > 2)
    914 		    debug("flags:%08x buttons:%08x obuttons:%08x",
    915 			  action.flags, action.button, action.obutton);
    916 	    } else {
    917 		action0.obutton = action0.button;
    918 		continue;
    919 	    }
    920 	} else {
    921 #if 0
    922 	    /*  MouseRemote client connect/disconnect  */
    923 	    if (set[1].revents & POLLIN) {
    924 		mremote_clientchg(TRUE);
    925 		continue;
    926 	    }
    927 	    if (set[2].revents & POLLIN) {
    928 		mremote_clientchg(FALSE);
    929 		continue;
    930 	    }
    931 #endif
    932 	    /* mouse movement */
    933 	    if (set[0].revents & POLLIN) {
    934 		if (read(rodent.mfd, &b, 1) == -1)
    935 		    return;
    936 		if ((flags = r_protocol(b, &action0)) == 0)
    937 		    continue;
    938 		r_timestamp(&action0);
    939 		r_statetrans(&action0, &action,
    940 	    		     A(action0.button & MOUSE_BUTTON1DOWN,
    941 	    		       action0.button & MOUSE_BUTTON3DOWN));
    942 		debug("flags:%08x buttons:%08x obuttons:%08x", action.flags,
    943 		      action.button, action.obutton);
    944 	    }
    945 	}
    946 	action0.obutton = action0.button;
    947 	flags &= MOUSE_POSCHANGED;
    948 	flags |= action.obutton ^ action.button;
    949 	action.flags = flags;
    950 
    951 	if (flags) {			/* handler detected action */
    952 	    r_map(&action, &action2);
    953 	    debug("activity : buttons 0x%08x  dx %d  dy %d  dz %d",
    954 		action2.button, action2.dx, action2.dy, action2.dz);
    955 
    956             if (dbg > 1)
    957 	        printf("buttons=%x x=%d y=%d z=%d\n", action2.button,
    958 		    (int)(action2.dx * rodent.accelx),
    959 		    (int)(action2.dy * rodent.accely),
    960 		    (int)action2.dz);
    961 	    if (action2.dx != 0 && dbg < 2)
    962 		wsev(WSCONS_EVENT_MOUSE_DELTA_X, action2.dx * rodent.accelx);
    963 	    if (action2.dy != 0 && dbg < 2)
    964 		wsev(WSCONS_EVENT_MOUSE_DELTA_Y, -action2.dy * rodent.accely);
    965 	    if (action2.dz != 0 && dbg < 2)
    966 		wsev(WSCONS_EVENT_MOUSE_DELTA_Z, action2.dz);
    967 	    button = lastbutton ^ action2.button;
    968 	    lastbutton = action2.button;
    969 	    printf("diff=%x buts=%x\n", button, lastbutton);
    970 	    for (i = 0; i < 3; i ++) {
    971 		if ((button & (1<<i)) && dbg < 2) {
    972 		    wsev(lastbutton & (1<<i) ? WSCONS_EVENT_MOUSE_DOWN :
    973 			 WSCONS_EVENT_MOUSE_UP, i);
    974 		}
    975 	    }
    976 
    977             /*
    978 	     * If the Z axis movement is mapped to a imaginary physical
    979 	     * button, we need to cook up a corresponding button `up' event
    980 	     * after sending a button `down' event.
    981 	     */
    982             if ((rodent.zmap[0] > 0) && (action.dz != 0)) {
    983 		action.obutton = action.button;
    984 		action.dx = action.dy = action.dz = 0;
    985 	        r_map(&action, &action2);
    986 	        debug("activity : buttons 0x%08x  dx %d  dy %d  dz %d",
    987 		    action2.button, action2.dx, action2.dy, action2.dz);
    988 
    989 		/* XXX emplement this */
    990 #if 0
    991 	        if (extioctl) {
    992 	            r_click(&action2);
    993 	        } else {
    994 	            mouse.operation = MOUSE_ACTION;
    995 	            mouse.u.data.buttons = action2.button;
    996 		    mouse.u.data.x = mouse.u.data.y = mouse.u.data.z = 0;
    997 		    if (dbg < 2)
    998 	                ioctl(rodent.cfd, CONS_MOUSECTL, &mouse);
    999 	        }
   1000 #endif
   1001 	    }
   1002 	}
   1003     }
   1004     /* NOT REACHED */
   1005 }
   1006 
   1007 static void
   1008 hup(int sig)
   1009 {
   1010     longjmp(env, 1);
   1011 }
   1012 
   1013 static void
   1014 cleanup(int sig)
   1015 {
   1016     if (rodent.rtype == MOUSE_PROTO_X10MOUSEREM)
   1017 	unlink(_PATH_MOUSEREMOTE);
   1018     exit(0);
   1019 }
   1020 
   1021 /**
   1022  ** usage
   1023  **
   1024  ** Complain, and free the CPU for more worthy tasks
   1025  **/
   1026 static void
   1027 usage(void)
   1028 {
   1029     fprintf(stderr, "%s\n%s\n%s\n%s\n",
   1030 	"usage: moused [-DRcdfs] [-I file] [-F rate] [-r resolution] [-S baudrate]",
   1031 	"              [-a X[,Y]] [-m N=M] [-w N] [-z N]",
   1032 	"              [-t <mousetype>] [-3 [-E timeout]] -p <port>",
   1033 	"       moused [-d] -i <port|if|type|model|all> -p <port>");
   1034     exit(1);
   1035 }
   1036 
   1037 /**
   1038  ** Mouse interface code, courtesy of XFree86 3.1.2.
   1039  **
   1040  ** Note: Various bits have been trimmed, and in my shortsighted enthusiasm
   1041  ** to clean, reformat and rationalise naming, it's quite possible that
   1042  ** some things in here have been broken.
   1043  **
   1044  ** I hope not 8)
   1045  **
   1046  ** The following code is derived from a module marked :
   1047  **/
   1048 
   1049 /* $XConsortium: xf86_Mouse.c,v 1.2 94/10/12 20:33:21 kaleb Exp $ */
   1050 /* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86_Mouse.c,v 3.2 1995/01/28
   1051  17:03:40 dawes Exp $ */
   1052 /*
   1053  *
   1054  * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
   1055  * Copyright 1993 by David Dawes <dawes (at) physics.su.oz.au>
   1056  *
   1057  * Permission to use, copy, modify, distribute, and sell this software and its
   1058  * documentation for any purpose is hereby granted without fee, provided that
   1059  * the above copyright notice appear in all copies and that both that
   1060  * copyright notice and this permission notice appear in supporting
   1061  * documentation, and that the names of Thomas Roell and David Dawes not be
   1062  * used in advertising or publicity pertaining to distribution of the
   1063  * software without specific, written prior permission.  Thomas Roell
   1064  * and David Dawes makes no representations about the suitability of this
   1065  * software for any purpose.  It is provided "as is" without express or
   1066  * implied warranty.
   1067  *
   1068  * THOMAS ROELL AND DAVID DAWES DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
   1069  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
   1070  * FITNESS, IN NO EVENT SHALL THOMAS ROELL OR DAVID DAWES BE LIABLE FOR ANY
   1071  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
   1072  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
   1073  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
   1074  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   1075  *
   1076  */
   1077 
   1078 /**
   1079  ** GlidePoint support from XFree86 3.2.
   1080  ** Derived from the module:
   1081  **/
   1082 
   1083 /* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86_Mouse.c,v 3.19 1996/10/16 14:40:51 dawes Exp $ */
   1084 /* $XConsortium: xf86_Mouse.c /main/10 1996/01/30 15:16:12 kaleb $ */
   1085 
   1086 /* the following table must be ordered by MOUSE_PROTO_XXX in mouse.h */
   1087 static unsigned char proto[][7] = {
   1088     /*  hd_mask hd_id   dp_mask dp_id   bytes b4_mask b4_id */
   1089     { 	0x40,	0x40,	0x40,	0x00,	3,   ~0x23,  0x00 }, /* MicroSoft */
   1090     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* MouseSystems */
   1091     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* Logitech */
   1092     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* MMSeries */
   1093     { 	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* MouseMan */
   1094     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* Bus */
   1095     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* InPort */
   1096     {	0xc0,	0x00,	0x00,	0x00,	3,    0x00,  0xff }, /* PS/2 mouse */
   1097     {	0xe0,	0x80,	0x80,	0x00,	3,    0x00,  0xff }, /* MM HitTablet */
   1098     { 	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* GlidePoint */
   1099     { 	0x40,	0x40,	0x40,	0x00,	3,   ~0x3f,  0x00 }, /* IntelliMouse */
   1100     { 	0x40,	0x40,	0x40,	0x00,	3,   ~0x33,  0x00 }, /* ThinkingMouse */
   1101     {	0xf8,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* sysmouse */
   1102     { 	0x40,	0x40,	0x40,	0x00,	3,   ~0x23,  0x00 }, /* X10 MouseRem */
   1103     {	0x80,	0x80,	0x00,	0x00,	5,    0x00,  0xff }, /* KIDSPAD */
   1104     {	0xc3,	0xc0,	0x00,	0x00,	6,    0x00,  0xff }, /* VersaPad */
   1105 #if notyet
   1106     {	0xf8,	0x80,	0x00,	0x00,	5,   ~0x2f,  0x10 }, /* Mariqua */
   1107 #endif
   1108 };
   1109 static unsigned char cur_proto[7];
   1110 
   1111 static int
   1112 r_identify(void)
   1113 {
   1114     char pnpbuf[256];	/* PnP identifier string may be up to 256 bytes long */
   1115     pnpid_t pnpid;
   1116     symtab_t *t;
   1117     int len;
   1118 
   1119     rodent.level = 0;
   1120 
   1121     if (rodent.rtype != MOUSE_PROTO_UNKNOWN)
   1122         bcopy(proto[rodent.rtype], cur_proto, sizeof(cur_proto));
   1123     rodent.mode.protocol = MOUSE_PROTO_UNKNOWN;
   1124     rodent.mode.rate = -1;
   1125     rodent.mode.resolution = MOUSE_RES_UNKNOWN;
   1126     rodent.mode.accelfactor = 0;
   1127     rodent.mode.level = 0;
   1128 
   1129     /* maybe this is an PnP mouse... */
   1130     if (rodent.mode.protocol == MOUSE_PROTO_UNKNOWN) {
   1131 
   1132         if (rodent.flags & NoPnP)
   1133             return rodent.rtype;
   1134 	if (((len = pnpgets(pnpbuf)) <= 0) || !pnpparse(&pnpid, pnpbuf, len))
   1135             return rodent.rtype;
   1136 
   1137         debug("PnP serial mouse: '%*.*s' '%*.*s' '%*.*s'",
   1138 	    pnpid.neisaid, pnpid.neisaid, pnpid.eisaid,
   1139 	    pnpid.ncompat, pnpid.ncompat, pnpid.compat,
   1140 	    pnpid.ndescription, pnpid.ndescription, pnpid.description);
   1141 
   1142 	/* we have a valid PnP serial device ID */
   1143         rodent.hw.iftype = MOUSE_IF_SERIAL;
   1144 	t = pnpproto(&pnpid);
   1145 	if (t != NULL) {
   1146             rodent.mode.protocol = t->val;
   1147             rodent.hw.model = t->val2;
   1148 	} else {
   1149             rodent.mode.protocol = MOUSE_PROTO_UNKNOWN;
   1150 	}
   1151 	if (rodent.mode.protocol == MOUSE_PROTO_INPORT)
   1152 	    rodent.mode.protocol = MOUSE_PROTO_BUS;
   1153 
   1154         /* make final adjustment */
   1155 	if (rodent.mode.protocol != MOUSE_PROTO_UNKNOWN) {
   1156 	    if (rodent.mode.protocol != rodent.rtype) {
   1157 		/* Hmm, the device doesn't agree with the user... */
   1158                 if (rodent.rtype != MOUSE_PROTO_UNKNOWN)
   1159 	            logwarnx("mouse type mismatch (%s != %s), %s is assumed",
   1160 		        r_name(rodent.mode.protocol), r_name(rodent.rtype),
   1161 		        r_name(rodent.mode.protocol));
   1162 	        rodent.rtype = rodent.mode.protocol;
   1163                 bcopy(proto[rodent.rtype], cur_proto, sizeof(cur_proto));
   1164 	    }
   1165 	}
   1166     }
   1167 
   1168     debug("proto params: %02x %02x %02x %02x %d %02x %02x",
   1169 	cur_proto[0], cur_proto[1], cur_proto[2], cur_proto[3],
   1170 	cur_proto[4], cur_proto[5], cur_proto[6]);
   1171 
   1172     return rodent.rtype;
   1173 }
   1174 
   1175 static const char *
   1176 r_if(int iftype)
   1177 {
   1178     const char *s;
   1179 
   1180     s = gettokenname(rifs, iftype);
   1181     return (s == NULL) ? "unknown" : s;
   1182 }
   1183 
   1184 static const char *
   1185 r_name(int type)
   1186 {
   1187     return ((type == MOUSE_PROTO_UNKNOWN)
   1188 	|| (type > (int)(sizeof(rnames)/sizeof(rnames[0]) - 1)))
   1189 	? "unknown" : rnames[type];
   1190 }
   1191 
   1192 static const char *
   1193 r_model(int model)
   1194 {
   1195     const char *s;
   1196 
   1197     s = gettokenname(rmodels, model);
   1198     return (s == NULL) ? "unknown" : s;
   1199 }
   1200 
   1201 static void
   1202 r_init(void)
   1203 {
   1204     unsigned char buf[16];	/* scrach buffer */
   1205     struct pollfd set[1];
   1206     const char *s;
   1207     char c;
   1208     int i;
   1209 
   1210     /**
   1211      ** This comment is a little out of context here, but it contains
   1212      ** some useful information...
   1213      ********************************************************************
   1214      **
   1215      ** The following lines take care of the Logitech MouseMan protocols.
   1216      **
   1217      ** NOTE: There are different versions of both MouseMan and TrackMan!
   1218      **       Hence I add another protocol P_LOGIMAN, which the user can
   1219      **       specify as MouseMan in his XF86Config file. This entry was
   1220      **       formerly handled as a special case of P_MS. However, people
   1221      **       who don't have the middle button problem, can still specify
   1222      **       Microsoft and use P_MS.
   1223      **
   1224      ** By default, these mice should use a 3 byte Microsoft protocol
   1225      ** plus a 4th byte for the middle button. However, the mouse might
   1226      ** have switched to a different protocol before we use it, so I send
   1227      ** the proper sequence just in case.
   1228      **
   1229      ** NOTE: - all commands to (at least the European) MouseMan have to
   1230      **         be sent at 1200 Baud.
   1231      **       - each command starts with a '*'.
   1232      **       - whenever the MouseMan receives a '*', it will switch back
   1233      **	 to 1200 Baud. Hence I have to select the desired protocol
   1234      **	 first, then select the baud rate.
   1235      **
   1236      ** The protocols supported by the (European) MouseMan are:
   1237      **   -  5 byte packed binary protocol, as with the Mouse Systems
   1238      **      mouse. Selected by sequence "*U".
   1239      **   -  2 button 3 byte MicroSoft compatible protocol. Selected
   1240      **      by sequence "*V".
   1241      **   -  3 button 3+1 byte MicroSoft compatible protocol (default).
   1242      **      Selected by sequence "*X".
   1243      **
   1244      ** The following baud rates are supported:
   1245      **   -  1200 Baud (default). Selected by sequence "*n".
   1246      **   -  9600 Baud. Selected by sequence "*q".
   1247      **
   1248      ** Selecting a sample rate is no longer supported with the MouseMan!
   1249      ** Some additional lines in xf86Config.c take care of ill configured
   1250      ** baud rates and sample rates. (The user will get an error.)
   1251      */
   1252 
   1253     switch (rodent.rtype) {
   1254 
   1255     case MOUSE_PROTO_LOGI:
   1256 	/*
   1257 	 * The baud rate selection command must be sent at the current
   1258 	 * baud rate; try all likely settings
   1259 	 */
   1260 	setmousespeed(9600, rodent.baudrate, rodentcflags[rodent.rtype]);
   1261 	setmousespeed(4800, rodent.baudrate, rodentcflags[rodent.rtype]);
   1262 	setmousespeed(2400, rodent.baudrate, rodentcflags[rodent.rtype]);
   1263 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
   1264 	/* select MM series data format */
   1265 	write(rodent.mfd, "S", 1);
   1266 	setmousespeed(rodent.baudrate, rodent.baudrate,
   1267 		      rodentcflags[MOUSE_PROTO_MM]);
   1268 	/* select report rate/frequency */
   1269 	if      (rodent.rate <= 0)   write(rodent.mfd, "O", 1);
   1270 	else if (rodent.rate <= 15)  write(rodent.mfd, "J", 1);
   1271 	else if (rodent.rate <= 27)  write(rodent.mfd, "K", 1);
   1272 	else if (rodent.rate <= 42)  write(rodent.mfd, "L", 1);
   1273 	else if (rodent.rate <= 60)  write(rodent.mfd, "R", 1);
   1274 	else if (rodent.rate <= 85)  write(rodent.mfd, "M", 1);
   1275 	else if (rodent.rate <= 125) write(rodent.mfd, "Q", 1);
   1276 	else			     write(rodent.mfd, "N", 1);
   1277 	break;
   1278 
   1279     case MOUSE_PROTO_LOGIMOUSEMAN:
   1280 	/* The command must always be sent at 1200 baud */
   1281 	setmousespeed(1200, 1200, rodentcflags[rodent.rtype]);
   1282 	write(rodent.mfd, "*X", 2);
   1283 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
   1284 	break;
   1285 
   1286     case MOUSE_PROTO_HITTAB:
   1287 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
   1288 
   1289 	/*
   1290 	 * Initialize Hitachi PUMA Plus - Model 1212E to desired settings.
   1291 	 * The tablet must be configured to be in MM mode, NO parity,
   1292 	 * Binary Format.  xf86Info.sampleRate controls the sensativity
   1293 	 * of the tablet.  We only use this tablet for its 4-button puck
   1294 	 * so we don't run in "Absolute Mode"
   1295 	 */
   1296 	write(rodent.mfd, "z8", 2);	/* Set Parity = "NONE" */
   1297 	usleep(50000);
   1298 	write(rodent.mfd, "zb", 2);	/* Set Format = "Binary" */
   1299 	usleep(50000);
   1300 	write(rodent.mfd, "@", 1);	/* Set Report Mode = "Stream" */
   1301 	usleep(50000);
   1302 	write(rodent.mfd, "R", 1);	/* Set Output Rate = "45 rps" */
   1303 	usleep(50000);
   1304 	write(rodent.mfd, "I\x20", 2);	/* Set Incrememtal Mode "20" */
   1305 	usleep(50000);
   1306 	write(rodent.mfd, "E", 1);	/* Set Data Type = "Relative */
   1307 	usleep(50000);
   1308 
   1309 	/* Resolution is in 'lines per inch' on the Hitachi tablet */
   1310 	if      (rodent.resolution == MOUSE_RES_LOW) 		c = 'g';
   1311 	else if (rodent.resolution == MOUSE_RES_MEDIUMLOW)	c = 'e';
   1312 	else if (rodent.resolution == MOUSE_RES_MEDIUMHIGH)	c = 'h';
   1313 	else if (rodent.resolution == MOUSE_RES_HIGH)		c = 'd';
   1314 	else if (rodent.resolution <=   40) 			c = 'g';
   1315 	else if (rodent.resolution <=  100) 			c = 'd';
   1316 	else if (rodent.resolution <=  200) 			c = 'e';
   1317 	else if (rodent.resolution <=  500) 			c = 'h';
   1318 	else if (rodent.resolution <= 1000) 			c = 'j';
   1319 	else                                			c = 'd';
   1320 	write(rodent.mfd, &c, 1);
   1321 	usleep(50000);
   1322 
   1323 	write(rodent.mfd, "\021", 1);	/* Resume DATA output */
   1324 	break;
   1325 
   1326     case MOUSE_PROTO_THINK:
   1327 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
   1328 	/* the PnP ID string may be sent again, discard it */
   1329 	usleep(200000);
   1330 	i = FREAD;
   1331 	ioctl(rodent.mfd, TIOCFLUSH, &i);
   1332 	/* send the command to initialize the beast */
   1333 	set[0].fd = rodent.mfd;
   1334 	set[0].events = POLLIN;
   1335 	for (s = "E5E5"; *s; ++s) {
   1336 	    write(rodent.mfd, s, 1);
   1337 	    if (poll(set, 1, INFTIM) <= 0)
   1338 		break;
   1339 	    read(rodent.mfd, &c, 1);
   1340 	    debug("%c", c);
   1341 	    if (c != *s)
   1342 	        break;
   1343 	}
   1344 	break;
   1345 
   1346     case MOUSE_PROTO_MSC:
   1347 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
   1348 	if (rodent.flags & ClearDTR) {
   1349 	   i = TIOCM_DTR;
   1350 	   ioctl(rodent.mfd, TIOCMBIC, &i);
   1351         }
   1352         if (rodent.flags & ClearRTS) {
   1353 	   i = TIOCM_RTS;
   1354 	   ioctl(rodent.mfd, TIOCMBIC, &i);
   1355         }
   1356 	break;
   1357 
   1358     case MOUSE_PROTO_SYSMOUSE:
   1359 	if (rodent.hw.iftype == MOUSE_IF_SYSMOUSE)
   1360 	    setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
   1361 	/* fall through */
   1362 
   1363     case MOUSE_PROTO_BUS:
   1364     case MOUSE_PROTO_INPORT:
   1365     case MOUSE_PROTO_PS2:
   1366 	if (rodent.rate >= 0)
   1367 	    rodent.mode.rate = rodent.rate;
   1368 	if (rodent.resolution != MOUSE_RES_UNKNOWN)
   1369 	    rodent.mode.resolution = rodent.resolution;
   1370 #if 0
   1371 	ioctl(rodent.mfd, MOUSE_SETMODE, &rodent.mode);
   1372 #endif
   1373 	break;
   1374 
   1375     case MOUSE_PROTO_X10MOUSEREM:
   1376 #if 0
   1377 	mremote_serversetup();
   1378 #endif
   1379 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
   1380 	break;
   1381 
   1382 
   1383     case MOUSE_PROTO_VERSAPAD:
   1384 	tcsendbreak(rodent.mfd, 0);	/* send break for 400 msec */
   1385 	i = FREAD;
   1386 	ioctl(rodent.mfd, TIOCFLUSH, &i);
   1387 	set[0].fd = rodent.mfd;
   1388 	set[0].events = POLLIN;
   1389 	for (i = 0; i < 7; ++i) {
   1390 	    if (poll(set, 1, INFTIM) <= 0)
   1391 		break;
   1392 	    read(rodent.mfd, &c, 1);
   1393 	    buf[i] = c;
   1394 	}
   1395 	debug("%s\n", buf);
   1396 	if ((buf[0] != 'V') || (buf[1] != 'P')|| (buf[7] != '\r'))
   1397 	    break;
   1398 	setmousespeed(9600, rodent.baudrate, rodentcflags[rodent.rtype]);
   1399 	tcsendbreak(rodent.mfd, 0);	/* send break for 400 msec again */
   1400 	for (i = 0; i < 7; ++i) {
   1401 	    if (poll(set, 1, INFTIM) <= 0)
   1402 		break;
   1403 	    read(rodent.mfd, &c, 1);
   1404 	    debug("%c", c);
   1405 	    if (c != buf[i])
   1406 		break;
   1407 	}
   1408 	i = FREAD;
   1409 	ioctl(rodent.mfd, TIOCFLUSH, &i);
   1410 	break;
   1411 
   1412     default:
   1413 	setmousespeed(1200, rodent.baudrate, rodentcflags[rodent.rtype]);
   1414 	break;
   1415     }
   1416 }
   1417 
   1418 static int
   1419 r_protocol(u_char rBuf, mousestatus_t *act)
   1420 {
   1421     /* MOUSE_MSS_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
   1422     static int butmapmss[4] = {	/* Microsoft, MouseMan, GlidePoint,
   1423 				   IntelliMouse, Thinking Mouse */
   1424 	0,
   1425 	MOUSE_BUTTON3DOWN,
   1426 	MOUSE_BUTTON1DOWN,
   1427 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
   1428     };
   1429     static int butmapmss2[4] = { /* Microsoft, MouseMan, GlidePoint,
   1430 				    Thinking Mouse */
   1431 	0,
   1432 	MOUSE_BUTTON4DOWN,
   1433 	MOUSE_BUTTON2DOWN,
   1434 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN,
   1435     };
   1436     /* MOUSE_INTELLI_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
   1437     static int butmapintelli[4] = { /* IntelliMouse, NetMouse, Mie Mouse,
   1438 				       MouseMan+ */
   1439 	0,
   1440 	MOUSE_BUTTON2DOWN,
   1441 	MOUSE_BUTTON4DOWN,
   1442 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN,
   1443     };
   1444     /* MOUSE_MSC_BUTTON?UP -> MOUSE_BUTTON?DOWN */
   1445     static int butmapmsc[8] = {	/* MouseSystems, MMSeries, Logitech,
   1446 				   Bus, sysmouse */
   1447 	0,
   1448 	MOUSE_BUTTON3DOWN,
   1449 	MOUSE_BUTTON2DOWN,
   1450 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN,
   1451 	MOUSE_BUTTON1DOWN,
   1452 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
   1453 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN,
   1454 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN
   1455     };
   1456     /* MOUSE_PS2_BUTTON?DOWN -> MOUSE_BUTTON?DOWN */
   1457     static int butmapps2[8] = {	/* PS/2 */
   1458 	0,
   1459 	MOUSE_BUTTON1DOWN,
   1460 	MOUSE_BUTTON3DOWN,
   1461 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
   1462 	MOUSE_BUTTON2DOWN,
   1463 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN,
   1464 	MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN,
   1465 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN
   1466     };
   1467     /* for Hitachi tablet */
   1468     static int butmaphit[8] = {	/* MM HitTablet */
   1469 	0,
   1470 	MOUSE_BUTTON3DOWN,
   1471 	MOUSE_BUTTON2DOWN,
   1472 	MOUSE_BUTTON1DOWN,
   1473 	MOUSE_BUTTON4DOWN,
   1474 	MOUSE_BUTTON5DOWN,
   1475 	MOUSE_BUTTON6DOWN,
   1476 	MOUSE_BUTTON7DOWN,
   1477     };
   1478     /* for serial VersaPad */
   1479     static int butmapversa[8] = { /* VersaPad */
   1480 	0,
   1481 	0,
   1482 	MOUSE_BUTTON3DOWN,
   1483 	MOUSE_BUTTON3DOWN,
   1484 	MOUSE_BUTTON1DOWN,
   1485 	MOUSE_BUTTON1DOWN,
   1486 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
   1487 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
   1488     };
   1489     /* for PS/2 VersaPad */
   1490     static int butmapversaps2[8] = { /* VersaPad */
   1491 	0,
   1492 	MOUSE_BUTTON3DOWN,
   1493 	0,
   1494 	MOUSE_BUTTON3DOWN,
   1495 	MOUSE_BUTTON1DOWN,
   1496 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
   1497 	MOUSE_BUTTON1DOWN,
   1498 	MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
   1499     };
   1500     static int           pBufP = 0;
   1501     static unsigned char pBuf[8];
   1502     static int		 prev_x, prev_y;
   1503     static int		 on = FALSE;
   1504     int			 x, y;
   1505 
   1506     debug("received char 0x%x",(int)rBuf);
   1507     if (rodent.rtype == MOUSE_PROTO_KIDSPAD)
   1508 	return kidspad(rBuf, act);
   1509 
   1510     /*
   1511      * Hack for resyncing: We check here for a package that is:
   1512      *  a) illegal (detected by wrong data-package header)
   1513      *  b) invalid (0x80 == -128 and that might be wrong for MouseSystems)
   1514      *  c) bad header-package
   1515      *
   1516      * NOTE: b) is a violation of the MouseSystems-Protocol, since values of
   1517      *       -128 are allowed, but since they are very seldom we can easily
   1518      *       use them as package-header with no button pressed.
   1519      * NOTE/2: On a PS/2 mouse any byte is valid as a data byte. Furthermore,
   1520      *         0x80 is not valid as a header byte. For a PS/2 mouse we skip
   1521      *         checking data bytes.
   1522      *         For resyncing a PS/2 mouse we require the two most significant
   1523      *         bits in the header byte to be 0. These are the overflow bits,
   1524      *         and in case of an overflow we actually lose sync. Overflows
   1525      *         are very rare, however, and we quickly gain sync again after
   1526      *         an overflow condition. This is the best we can do. (Actually,
   1527      *         we could use bit 0x08 in the header byte for resyncing, since
   1528      *         that bit is supposed to be always on, but nobody told
   1529      *         Microsoft...)
   1530      */
   1531 
   1532     if (pBufP != 0 && rodent.rtype != MOUSE_PROTO_PS2 &&
   1533 	((rBuf & cur_proto[2]) != cur_proto[3] || rBuf == 0x80))
   1534     {
   1535 	pBufP = 0;		/* skip package */
   1536     }
   1537 
   1538     if (pBufP == 0 && (rBuf & cur_proto[0]) != cur_proto[1])
   1539 	return 0;
   1540 
   1541     /* is there an extra data byte? */
   1542     if (pBufP >= cur_proto[4] && (rBuf & cur_proto[0]) != cur_proto[1])
   1543     {
   1544 	/*
   1545 	 * Hack for Logitech MouseMan Mouse - Middle button
   1546 	 *
   1547 	 * Unfortunately this mouse has variable length packets: the standard
   1548 	 * Microsoft 3 byte packet plus an optional 4th byte whenever the
   1549 	 * middle button status changes.
   1550 	 *
   1551 	 * We have already processed the standard packet with the movement
   1552 	 * and button info.  Now post an event message with the old status
   1553 	 * of the left and right buttons and the updated middle button.
   1554 	 */
   1555 
   1556 	/*
   1557 	 * Even worse, different MouseMen and TrackMen differ in the 4th
   1558 	 * byte: some will send 0x00/0x20, others 0x01/0x21, or even
   1559 	 * 0x02/0x22, so I have to strip off the lower bits.
   1560          *
   1561          * [JCH-96/01/21]
   1562          * HACK for ALPS "fourth button". (It's bit 0x10 of the "fourth byte"
   1563          * and it is activated by tapping the glidepad with the finger! 8^)
   1564          * We map it to bit bit3, and the reverse map in xf86Events just has
   1565          * to be extended so that it is identified as Button 4. The lower
   1566          * half of the reverse-map may remain unchanged.
   1567 	 */
   1568 
   1569         /*
   1570 	 * [KY-97/08/03]
   1571 	 * Receive the fourth byte only when preceding three bytes have
   1572 	 * been detected (pBufP >= cur_proto[4]).  In the previous
   1573 	 * versions, the test was pBufP == 0; thus, we may have mistakingly
   1574 	 * received a byte even if we didn't see anything preceding
   1575 	 * the byte.
   1576 	 */
   1577 
   1578 	if ((rBuf & cur_proto[5]) != cur_proto[6]) {
   1579             pBufP = 0;
   1580 	    return 0;
   1581 	}
   1582 
   1583 	switch (rodent.rtype) {
   1584 #if notyet
   1585 	case MOUSE_PROTO_MARIQUA:
   1586 	    /*
   1587 	     * This mouse has 16! buttons in addition to the standard
   1588 	     * three of them.  They return 0x10 though 0x1f in the
   1589 	     * so-called `ten key' mode and 0x30 though 0x3f in the
   1590 	     * `function key' mode.  As there are only 31 bits for
   1591 	     * button state (including the standard three), we ignore
   1592 	     * the bit 0x20 and don't distinguish the two modes.
   1593 	     */
   1594 	    act->dx = act->dy = act->dz = 0;
   1595 	    act->obutton = act->button;
   1596 	    rBuf &= 0x1f;
   1597 	    act->button = (1 << (rBuf - 13))
   1598                 | (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
   1599 	    /*
   1600 	     * FIXME: this is a button "down" event. There needs to be
   1601 	     * a corresponding button "up" event... XXX
   1602 	     */
   1603 	    break;
   1604 #endif /* notyet */
   1605 
   1606 	/*
   1607 	 * IntelliMouse, NetMouse (including NetMouse Pro) and Mie Mouse
   1608 	 * always send the fourth byte, whereas the fourth byte is
   1609 	 * optional for GlidePoint and ThinkingMouse. The fourth byte
   1610 	 * is also optional for MouseMan+ and FirstMouse+ in their
   1611 	 * native mode. It is always sent if they are in the IntelliMouse
   1612 	 * compatible mode.
   1613 	 */
   1614 	case MOUSE_PROTO_INTELLI:	/* IntelliMouse, NetMouse, Mie Mouse,
   1615 					   MouseMan+ */
   1616 	    act->dx = act->dy = 0;
   1617 	    act->dz = (rBuf & 0x08) ? (rBuf & 0x0f) - 16 : (rBuf & 0x0f);
   1618 	    if ((act->dz >= 7) || (act->dz <= -7))
   1619 		act->dz = 0;
   1620 	    act->obutton = act->button;
   1621 	    act->button = butmapintelli[(rBuf & MOUSE_MSS_BUTTONS) >> 4]
   1622 		| (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
   1623 	    break;
   1624 
   1625 	default:
   1626 	    act->dx = act->dy = act->dz = 0;
   1627 	    act->obutton = act->button;
   1628 	    act->button = butmapmss2[(rBuf & MOUSE_MSS_BUTTONS) >> 4]
   1629 		| (act->obutton & (MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN));
   1630 	    break;
   1631 	}
   1632 
   1633 	act->flags = ((act->dx || act->dy || act->dz) ? MOUSE_POSCHANGED : 0)
   1634 	    | (act->obutton ^ act->button);
   1635         pBufP = 0;
   1636 	return act->flags;
   1637     }
   1638 
   1639     if (pBufP >= cur_proto[4])
   1640 	pBufP = 0;
   1641     pBuf[pBufP++] = rBuf;
   1642     if (pBufP != cur_proto[4])
   1643 	return 0;
   1644 
   1645     /*
   1646      * assembly full package
   1647      */
   1648 
   1649     debug("assembled full packet (len %d) %x,%x,%x,%x,%x,%x,%x,%x",
   1650 	cur_proto[4],
   1651 	pBuf[0], pBuf[1], pBuf[2], pBuf[3],
   1652 	pBuf[4], pBuf[5], pBuf[6], pBuf[7]);
   1653 
   1654     act->dz = 0;
   1655     act->obutton = act->button;
   1656     switch (rodent.rtype)
   1657     {
   1658     case MOUSE_PROTO_MS:		/* Microsoft */
   1659     case MOUSE_PROTO_LOGIMOUSEMAN:	/* MouseMan/TrackMan */
   1660     case MOUSE_PROTO_X10MOUSEREM:	/* X10 MouseRemote */
   1661 	act->button = act->obutton & MOUSE_BUTTON4DOWN;
   1662 	if (rodent.flags & ChordMiddle)
   1663 	    act->button |= ((pBuf[0] & MOUSE_MSS_BUTTONS) == MOUSE_MSS_BUTTONS)
   1664 		? MOUSE_BUTTON2DOWN
   1665 		: butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
   1666 	else
   1667 	    act->button |= (act->obutton & MOUSE_BUTTON2DOWN)
   1668 		| butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
   1669 
   1670 #if 0
   1671 	/* Send X10 btn events to remote client (ensure -128-+127 range) */
   1672 	if ((rodent.rtype == MOUSE_PROTO_X10MOUSEREM) &&
   1673 	    ((pBuf[0] & 0xFC) == 0x44) && (pBuf[2] == 0x3F)) {
   1674 	    if (rodent.mremcfd >= 0) {
   1675 		unsigned char key = (signed char)(((pBuf[0] & 0x03) << 6) |
   1676 						  (pBuf[1] & 0x3F));
   1677 		write( rodent.mremcfd, &key, 1 );
   1678 	    }
   1679 	    return 0;
   1680 	}
   1681 #endif
   1682 
   1683 	act->dx = (char)(((pBuf[0] & 0x03) << 6) | (pBuf[1] & 0x3F));
   1684 	act->dy = (char)(((pBuf[0] & 0x0C) << 4) | (pBuf[2] & 0x3F));
   1685 	break;
   1686 
   1687     case MOUSE_PROTO_GLIDEPOINT:	/* GlidePoint */
   1688     case MOUSE_PROTO_THINK:		/* ThinkingMouse */
   1689     case MOUSE_PROTO_INTELLI:		/* IntelliMouse, NetMouse, Mie Mouse,
   1690 					   MouseMan+ */
   1691 	act->button = (act->obutton & (MOUSE_BUTTON2DOWN | MOUSE_BUTTON4DOWN))
   1692             | butmapmss[(pBuf[0] & MOUSE_MSS_BUTTONS) >> 4];
   1693 	act->dx = (char)(((pBuf[0] & 0x03) << 6) | (pBuf[1] & 0x3F));
   1694 	act->dy = (char)(((pBuf[0] & 0x0C) << 4) | (pBuf[2] & 0x3F));
   1695 	break;
   1696 
   1697     case MOUSE_PROTO_MSC:		/* MouseSystems Corp */
   1698 #if notyet
   1699     case MOUSE_PROTO_MARIQUA:		/* Mariqua */
   1700 #endif
   1701 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_MSC_BUTTONS];
   1702 	act->dx =    (char)(pBuf[1]) + (char)(pBuf[3]);
   1703 	act->dy = - ((char)(pBuf[2]) + (char)(pBuf[4]));
   1704 	break;
   1705 
   1706     case MOUSE_PROTO_HITTAB:		/* MM HitTablet */
   1707 	act->button = butmaphit[pBuf[0] & 0x07];
   1708 	act->dx = (pBuf[0] & MOUSE_MM_XPOSITIVE) ?   pBuf[1] : - pBuf[1];
   1709 	act->dy = (pBuf[0] & MOUSE_MM_YPOSITIVE) ? - pBuf[2] :   pBuf[2];
   1710 	break;
   1711 
   1712     case MOUSE_PROTO_MM:		/* MM Series */
   1713     case MOUSE_PROTO_LOGI:		/* Logitech Mice */
   1714 	act->button = butmapmsc[pBuf[0] & MOUSE_MSC_BUTTONS];
   1715 	act->dx = (pBuf[0] & MOUSE_MM_XPOSITIVE) ?   pBuf[1] : - pBuf[1];
   1716 	act->dy = (pBuf[0] & MOUSE_MM_YPOSITIVE) ? - pBuf[2] :   pBuf[2];
   1717 	break;
   1718 
   1719     case MOUSE_PROTO_VERSAPAD:		/* VersaPad */
   1720 	act->button = butmapversa[(pBuf[0] & MOUSE_VERSA_BUTTONS) >> 3];
   1721 	act->button |= (pBuf[0] & MOUSE_VERSA_TAP) ? MOUSE_BUTTON4DOWN : 0;
   1722 	act->dx = act->dy = 0;
   1723 	if (!(pBuf[0] & MOUSE_VERSA_IN_USE)) {
   1724 	    on = FALSE;
   1725 	    break;
   1726 	}
   1727 	x = (pBuf[2] << 6) | pBuf[1];
   1728 	if (x & 0x800)
   1729 	    x -= 0x1000;
   1730 	y = (pBuf[4] << 6) | pBuf[3];
   1731 	if (y & 0x800)
   1732 	    y -= 0x1000;
   1733 	if (on) {
   1734 	    act->dx = prev_x - x;
   1735 	    act->dy = prev_y - y;
   1736 	} else {
   1737 	    on = TRUE;
   1738 	}
   1739 	prev_x = x;
   1740 	prev_y = y;
   1741 	break;
   1742 
   1743     case MOUSE_PROTO_BUS:		/* Bus */
   1744     case MOUSE_PROTO_INPORT:		/* InPort */
   1745 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_MSC_BUTTONS];
   1746 	act->dx =   (char)pBuf[1];
   1747 	act->dy = - (char)pBuf[2];
   1748 	break;
   1749 
   1750     case MOUSE_PROTO_PS2:		/* PS/2 */
   1751 	act->button = butmapps2[pBuf[0] & MOUSE_PS2_BUTTONS];
   1752 	act->dx = (pBuf[0] & MOUSE_PS2_XNEG) ?    pBuf[1] - 256  :  pBuf[1];
   1753 	act->dy = (pBuf[0] & MOUSE_PS2_YNEG) ?  -(pBuf[2] - 256) : -pBuf[2];
   1754 	/*
   1755 	 * Moused usually operates the psm driver at the operation level 1
   1756 	 * which sends mouse data in MOUSE_PROTO_SYSMOUSE protocol.
   1757 	 * The following code takes effect only when the user explicitly
   1758 	 * requests the level 2 at which wheel movement and additional button
   1759 	 * actions are encoded in model-dependent formats. At the level 0
   1760 	 * the following code is no-op because the psm driver says the model
   1761 	 * is MOUSE_MODEL_GENERIC.
   1762 	 */
   1763 	switch (rodent.hw.model) {
   1764 	case MOUSE_MODEL_EXPLORER:
   1765 	    /* wheel and additional button data is in the fourth byte */
   1766 	    act->dz = (pBuf[3] & MOUSE_EXPLORER_ZNEG)
   1767 		? (pBuf[3] & 0x0f) - 16 : (pBuf[3] & 0x0f);
   1768 	    act->button |= (pBuf[3] & MOUSE_EXPLORER_BUTTON4DOWN)
   1769 		? MOUSE_BUTTON4DOWN : 0;
   1770 	    act->button |= (pBuf[3] & MOUSE_EXPLORER_BUTTON5DOWN)
   1771 		? MOUSE_BUTTON5DOWN : 0;
   1772 	    break;
   1773 	case MOUSE_MODEL_INTELLI:
   1774 	case MOUSE_MODEL_NET:
   1775 	    /* wheel data is in the fourth byte */
   1776 	    act->dz = (char)pBuf[3];
   1777 	    if ((act->dz >= 7) || (act->dz <= -7))
   1778 		act->dz = 0;
   1779 	    /* some compatible mice may have additional buttons */
   1780 	    act->button |= (pBuf[0] & MOUSE_PS2INTELLI_BUTTON4DOWN)
   1781 		? MOUSE_BUTTON4DOWN : 0;
   1782 	    act->button |= (pBuf[0] & MOUSE_PS2INTELLI_BUTTON5DOWN)
   1783 		? MOUSE_BUTTON5DOWN : 0;
   1784 	    break;
   1785 	case MOUSE_MODEL_MOUSEMANPLUS:
   1786 	    if (((pBuf[0] & MOUSE_PS2PLUS_SYNCMASK) == MOUSE_PS2PLUS_SYNC)
   1787 		    && (abs(act->dx) > 191)
   1788 		    && MOUSE_PS2PLUS_CHECKBITS(pBuf)) {
   1789 		/* the extended data packet encodes button and wheel events */
   1790 		switch (MOUSE_PS2PLUS_PACKET_TYPE(pBuf)) {
   1791 		case 1:
   1792 		    /* wheel data packet */
   1793 		    act->dx = act->dy = 0;
   1794 		    if (pBuf[2] & 0x80) {
   1795 			/* horizontal roller count - ignore it XXX*/
   1796 		    } else {
   1797 			/* vertical roller count */
   1798 			act->dz = (pBuf[2] & MOUSE_PS2PLUS_ZNEG)
   1799 			    ? (pBuf[2] & 0x0f) - 16 : (pBuf[2] & 0x0f);
   1800 		    }
   1801 		    act->button |= (pBuf[2] & MOUSE_PS2PLUS_BUTTON4DOWN)
   1802 			? MOUSE_BUTTON4DOWN : 0;
   1803 		    act->button |= (pBuf[2] & MOUSE_PS2PLUS_BUTTON5DOWN)
   1804 			? MOUSE_BUTTON5DOWN : 0;
   1805 		    break;
   1806 		case 2:
   1807 		    /* this packet type is reserved by Logitech */
   1808 		    /*
   1809 		     * IBM ScrollPoint Mouse uses this packet type to
   1810 		     * encode both vertical and horizontal scroll movement.
   1811 		     */
   1812 		    act->dx = act->dy = 0;
   1813 		    /* horizontal roller count */
   1814 		    if (pBuf[2] & 0x0f)
   1815 			act->dz = (pBuf[2] & MOUSE_SPOINT_WNEG) ? -2 : 2;
   1816 		    /* vertical roller count */
   1817 		    if (pBuf[2] & 0xf0)
   1818 			act->dz = (pBuf[2] & MOUSE_SPOINT_ZNEG) ? -1 : 1;
   1819 #if 0
   1820 		    /* vertical roller count */
   1821 		    act->dz = (pBuf[2] & MOUSE_SPOINT_ZNEG)
   1822 			? ((pBuf[2] >> 4) & 0x0f) - 16
   1823 			: ((pBuf[2] >> 4) & 0x0f);
   1824 		    /* horizontal roller count */
   1825 		    act->dw = (pBuf[2] & MOUSE_SPOINT_WNEG)
   1826 			? (pBuf[2] & 0x0f) - 16 : (pBuf[2] & 0x0f);
   1827 #endif
   1828 		    break;
   1829 		case 0:
   1830 		    /* device type packet - shouldn't happen */
   1831 		    /* FALL THROUGH */
   1832 		default:
   1833 		    act->dx = act->dy = 0;
   1834 		    act->button = act->obutton;
   1835             	    debug("unknown PS2++ packet type %d: 0x%02x 0x%02x 0x%02x\n",
   1836 			  MOUSE_PS2PLUS_PACKET_TYPE(pBuf),
   1837 			  pBuf[0], pBuf[1], pBuf[2]);
   1838 		    break;
   1839 		}
   1840 	    } else {
   1841 		/* preserve button states */
   1842 		act->button |= act->obutton & MOUSE_EXTBUTTONS;
   1843 	    }
   1844 	    break;
   1845 	case MOUSE_MODEL_GLIDEPOINT:
   1846 	    /* `tapping' action */
   1847 	    act->button |= ((pBuf[0] & MOUSE_PS2_TAP)) ? 0 : MOUSE_BUTTON4DOWN;
   1848 	    break;
   1849 	case MOUSE_MODEL_NETSCROLL:
   1850 	    /* three addtional bytes encode buttons and wheel events */
   1851 	    act->button |= (pBuf[3] & MOUSE_PS2_BUTTON3DOWN)
   1852 		? MOUSE_BUTTON4DOWN : 0;
   1853 	    act->button |= (pBuf[3] & MOUSE_PS2_BUTTON1DOWN)
   1854 		? MOUSE_BUTTON5DOWN : 0;
   1855 	    act->dz = (pBuf[3] & MOUSE_PS2_XNEG) ? pBuf[4] - 256 : pBuf[4];
   1856 	    break;
   1857 	case MOUSE_MODEL_THINK:
   1858 	    /* the fourth button state in the first byte */
   1859 	    act->button |= (pBuf[0] & MOUSE_PS2_TAP) ? MOUSE_BUTTON4DOWN : 0;
   1860 	    break;
   1861 	case MOUSE_MODEL_VERSAPAD:
   1862 	    act->button = butmapversaps2[pBuf[0] & MOUSE_PS2VERSA_BUTTONS];
   1863 	    act->button |=
   1864 		(pBuf[0] & MOUSE_PS2VERSA_TAP) ? MOUSE_BUTTON4DOWN : 0;
   1865 	    act->dx = act->dy = 0;
   1866 	    if (!(pBuf[0] & MOUSE_PS2VERSA_IN_USE)) {
   1867 		on = FALSE;
   1868 		break;
   1869 	    }
   1870 	    x = ((pBuf[4] << 8) & 0xf00) | pBuf[1];
   1871 	    if (x & 0x800)
   1872 		x -= 0x1000;
   1873 	    y = ((pBuf[4] << 4) & 0xf00) | pBuf[2];
   1874 	    if (y & 0x800)
   1875 		y -= 0x1000;
   1876 	    if (on) {
   1877 		act->dx = prev_x - x;
   1878 		act->dy = prev_y - y;
   1879 	    } else {
   1880 		on = TRUE;
   1881 	    }
   1882 	    prev_x = x;
   1883 	    prev_y = y;
   1884 	    break;
   1885 	case MOUSE_MODEL_4D:
   1886 	    act->dx = (pBuf[1] & 0x80) ?    pBuf[1] - 256  :  pBuf[1];
   1887 	    act->dy = (pBuf[2] & 0x80) ?  -(pBuf[2] - 256) : -pBuf[2];
   1888 	    switch (pBuf[0] & MOUSE_4D_WHEELBITS) {
   1889 	    case 0x10:
   1890 		act->dz = 1;
   1891 		break;
   1892 	    case 0x30:
   1893 		act->dz = -1;
   1894 		break;
   1895 	    case 0x40:	/* 2nd wheel rolling right XXX */
   1896 		act->dz = 2;
   1897 		break;
   1898 	    case 0xc0:	/* 2nd wheel rolling left XXX */
   1899 		act->dz = -2;
   1900 		break;
   1901 	    }
   1902 	    break;
   1903 	case MOUSE_MODEL_4DPLUS:
   1904 	    if ((act->dx < 16 - 256) && (act->dy > 256 - 16)) {
   1905 		act->dx = act->dy = 0;
   1906 		if (pBuf[2] & MOUSE_4DPLUS_BUTTON4DOWN)
   1907 		    act->button |= MOUSE_BUTTON4DOWN;
   1908 		act->dz = (pBuf[2] & MOUSE_4DPLUS_ZNEG)
   1909 			      ? ((pBuf[2] & 0x07) - 8) : (pBuf[2] & 0x07);
   1910 	    } else {
   1911 		/* preserve previous button states */
   1912 		act->button |= act->obutton & MOUSE_EXTBUTTONS;
   1913 	    }
   1914 	    break;
   1915 	case MOUSE_MODEL_GENERIC:
   1916 	default:
   1917 	    break;
   1918 	}
   1919 	break;
   1920 
   1921     case MOUSE_PROTO_SYSMOUSE:		/* sysmouse */
   1922 	act->button = butmapmsc[(~pBuf[0]) & MOUSE_SYS_STDBUTTONS];
   1923 	act->dx =    (char)(pBuf[1]) + (char)(pBuf[3]);
   1924 	act->dy = - ((char)(pBuf[2]) + (char)(pBuf[4]));
   1925 	if (rodent.level == 1) {
   1926 	    act->dz = ((char)(pBuf[5] << 1) + (char)(pBuf[6] << 1))/2;
   1927 	    act->button |= ((~pBuf[7] & MOUSE_SYS_EXTBUTTONS) << 3);
   1928 	}
   1929 	break;
   1930 
   1931     default:
   1932 	return 0;
   1933     }
   1934     /*
   1935      * We don't reset pBufP here yet, as there may be an additional data
   1936      * byte in some protocols. See above.
   1937      */
   1938 
   1939     /* has something changed? */
   1940     act->flags = ((act->dx || act->dy || act->dz) ? MOUSE_POSCHANGED : 0)
   1941 	| (act->obutton ^ act->button);
   1942 
   1943     return act->flags;
   1944 }
   1945 
   1946 static int
   1947 r_statetrans(mousestatus_t *a1, mousestatus_t *a2, int trans)
   1948 {
   1949     int changed;
   1950     int flags;
   1951 
   1952     a2->dx = a1->dx;
   1953     a2->dy = a1->dy;
   1954     a2->dz = a1->dz;
   1955     a2->obutton = a2->button;
   1956     a2->button = a1->button;
   1957     a2->flags = a1->flags;
   1958     changed = FALSE;
   1959 
   1960     if (rodent.flags & Emulate3Button) {
   1961 	if (dbg > 2)
   1962 	    debug("state:%d, trans:%d -> state:%d",
   1963 		  mouse_button_state, trans,
   1964 		  states[mouse_button_state].s[trans]);
   1965 	/*
   1966 	 * Avoid re-ordering button and movement events. While a button
   1967 	 * event is deferred, throw away up to BUTTON2_MAXMOVE movement
   1968 	 * events to allow for mouse jitter. If more movement events
   1969 	 * occur, then complete the deferred button events immediately.
   1970 	 */
   1971 	if ((a2->dx != 0 || a2->dy != 0) &&
   1972 	    S_DELAYED(states[mouse_button_state].s[trans])) {
   1973 		if (++mouse_move_delayed > BUTTON2_MAXMOVE) {
   1974 			mouse_move_delayed = 0;
   1975 			mouse_button_state =
   1976 			    states[mouse_button_state].s[A_TIMEOUT];
   1977 			changed = TRUE;
   1978 		} else
   1979 			a2->dx = a2->dy = 0;
   1980 	} else
   1981 		mouse_move_delayed = 0;
   1982 	if (mouse_button_state != states[mouse_button_state].s[trans])
   1983 		changed = TRUE;
   1984 	if (changed)
   1985 		gettimeofday(&mouse_button_state_tv, NULL);
   1986 	mouse_button_state = states[mouse_button_state].s[trans];
   1987 	a2->button &=
   1988 	    ~(MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN);
   1989 	a2->button &= states[mouse_button_state].mask;
   1990 	a2->button |= states[mouse_button_state].buttons;
   1991 	flags = a2->flags & MOUSE_POSCHANGED;
   1992 	flags |= a2->obutton ^ a2->button;
   1993 	if (flags & MOUSE_BUTTON2DOWN) {
   1994 	    a2->flags = flags & MOUSE_BUTTON2DOWN;
   1995 	    r_timestamp(a2);
   1996 	}
   1997 	a2->flags = flags;
   1998     }
   1999     return changed;
   2000 }
   2001 
   2002 /* phisical to logical button mapping */
   2003 static int p2l[MOUSE_MAXBUTTON] = {
   2004     MOUSE_BUTTON1DOWN, MOUSE_BUTTON2DOWN, MOUSE_BUTTON3DOWN, MOUSE_BUTTON4DOWN,
   2005     MOUSE_BUTTON5DOWN, MOUSE_BUTTON6DOWN, MOUSE_BUTTON7DOWN, MOUSE_BUTTON8DOWN,
   2006     0x00000100,        0x00000200,        0x00000400,        0x00000800,
   2007     0x00001000,        0x00002000,        0x00004000,        0x00008000,
   2008     0x00010000,        0x00020000,        0x00040000,        0x00080000,
   2009     0x00100000,        0x00200000,        0x00400000,        0x00800000,
   2010     0x01000000,        0x02000000,        0x04000000,        0x08000000,
   2011     0x10000000,        0x20000000,        0x40000000,
   2012 };
   2013 
   2014 static char *
   2015 skipspace(char *s)
   2016 {
   2017     while(isspace((unsigned char)*s))
   2018 	++s;
   2019     return s;
   2020 }
   2021 
   2022 static int
   2023 r_installmap(char *arg)
   2024 {
   2025     int pbutton;
   2026     int lbutton;
   2027     char *s;
   2028 
   2029     while (*arg) {
   2030 	arg = skipspace(arg);
   2031 	s = arg;
   2032 	while (isdigit((unsigned char)*arg))
   2033 	    ++arg;
   2034 	arg = skipspace(arg);
   2035 	if ((arg <= s) || (*arg != '='))
   2036 	    return FALSE;
   2037 	lbutton = atoi(s);
   2038 
   2039 	arg = skipspace(arg + 1);
   2040 	s = arg;
   2041 	while (isdigit((unsigned char)*arg))
   2042 	    ++arg;
   2043 	if ((arg <= s) || (!isspace((unsigned char)*arg) && (*arg != '\0')))
   2044 	    return FALSE;
   2045 	pbutton = atoi(s);
   2046 
   2047 	if ((lbutton <= 0) || (lbutton > MOUSE_MAXBUTTON))
   2048 	    return FALSE;
   2049 	if ((pbutton <= 0) || (pbutton > MOUSE_MAXBUTTON))
   2050 	    return FALSE;
   2051 	p2l[pbutton - 1] = 1 << (lbutton - 1);
   2052 	mstate[lbutton - 1] = &bstate[pbutton - 1];
   2053     }
   2054 
   2055     return TRUE;
   2056 }
   2057 
   2058 static void
   2059 r_map(mousestatus_t *act1, mousestatus_t *act2)
   2060 {
   2061     register int pb;
   2062     register int pbuttons;
   2063     int lbuttons;
   2064 
   2065     pbuttons = act1->button;
   2066     lbuttons = 0;
   2067 
   2068     act2->obutton = act2->button;
   2069     if (pbuttons & rodent.wmode) {
   2070 	pbuttons &= ~rodent.wmode;
   2071 	act1->dz = act1->dy;
   2072 	act1->dx = 0;
   2073 	act1->dy = 0;
   2074     }
   2075     act2->dx = act1->dx;
   2076     act2->dy = act1->dy;
   2077     act2->dz = act1->dz;
   2078 
   2079     switch (rodent.zmap[0]) {
   2080     case 0:	/* do nothing */
   2081 	break;
   2082     case MOUSE_XAXIS:
   2083 	if (act1->dz != 0) {
   2084 	    act2->dx = act1->dz;
   2085 	    act2->dz = 0;
   2086 	}
   2087 	break;
   2088     case MOUSE_YAXIS:
   2089 	if (act1->dz != 0) {
   2090 	    act2->dy = act1->dz;
   2091 	    act2->dz = 0;
   2092 	}
   2093 	break;
   2094     default:	/* buttons */
   2095 	pbuttons &= ~(rodent.zmap[0] | rodent.zmap[1]
   2096 		    | rodent.zmap[2] | rodent.zmap[3]);
   2097 	if ((act1->dz < -1) && rodent.zmap[2]) {
   2098 	    pbuttons |= rodent.zmap[2];
   2099 	    zstate[2].count = 1;
   2100 	} else if (act1->dz < 0) {
   2101 	    pbuttons |= rodent.zmap[0];
   2102 	    zstate[0].count = 1;
   2103 	} else if ((act1->dz > 1) && rodent.zmap[3]) {
   2104 	    pbuttons |= rodent.zmap[3];
   2105 	    zstate[3].count = 1;
   2106 	} else if (act1->dz > 0) {
   2107 	    pbuttons |= rodent.zmap[1];
   2108 	    zstate[1].count = 1;
   2109 	}
   2110 	act2->dz = 0;
   2111 	break;
   2112     }
   2113 
   2114     for (pb = 0; (pb < MOUSE_MAXBUTTON) && (pbuttons != 0); ++pb) {
   2115 	lbuttons |= (pbuttons & 1) ? p2l[pb] : 0;
   2116 	pbuttons >>= 1;
   2117     }
   2118     act2->button = lbuttons;
   2119 
   2120     act2->flags = ((act2->dx || act2->dy || act2->dz) ? MOUSE_POSCHANGED : 0)
   2121 	| (act2->obutton ^ act2->button);
   2122 }
   2123 
   2124 static void
   2125 r_timestamp(mousestatus_t *act)
   2126 {
   2127     struct timeval tv;
   2128     struct timeval tv1;
   2129     struct timeval tv2;
   2130     struct timeval tv3;
   2131     int button;
   2132     int mask;
   2133     int i;
   2134 
   2135     mask = act->flags & MOUSE_BUTTONS;
   2136 #if 0
   2137     if (mask == 0)
   2138 	return;
   2139 #endif
   2140 
   2141     gettimeofday(&tv1, NULL);
   2142 
   2143     /* double click threshold */
   2144     tv2.tv_sec = rodent.clickthreshold/1000;
   2145     tv2.tv_usec = (rodent.clickthreshold%1000)*1000;
   2146     timersub(&tv1, &tv2, &tv);
   2147     debug("tv:  %jd %jd", (intmax_t)tv.tv_sec, (intmax_t)tv.tv_usec);
   2148 
   2149     /* 3 button emulation timeout */
   2150     tv2.tv_sec = rodent.button2timeout/1000;
   2151     tv2.tv_usec = (rodent.button2timeout%1000)*1000;
   2152     timersub(&tv1, &tv2, &tv3);
   2153 
   2154     button = MOUSE_BUTTON1DOWN;
   2155     for (i = 0; (i < MOUSE_MAXBUTTON) && (mask != 0); ++i) {
   2156         if (mask & 1) {
   2157             if (act->button & button) {
   2158                 /* the button is down */
   2159     		debug("  :  %jd %jd",
   2160 		    (intmax_t)bstate[i].tv.tv_sec,
   2161 		    (intmax_t)bstate[i].tv.tv_usec);
   2162 		if (timercmp(&tv, &bstate[i].tv, >)) {
   2163                     bstate[i].count = 1;
   2164                 } else {
   2165                     ++bstate[i].count;
   2166                 }
   2167 		bstate[i].tv = tv1;
   2168             } else {
   2169                 /* the button is up */
   2170                 bstate[i].tv = tv1;
   2171             }
   2172         } else {
   2173 	    if (act->button & button) {
   2174 		/* the button has been down */
   2175 		if (timercmp(&tv3, &bstate[i].tv, >)) {
   2176 		    bstate[i].count = 1;
   2177 		    bstate[i].tv = tv1;
   2178 		    act->flags |= button;
   2179 		    debug("button %d timeout", i + 1);
   2180 		}
   2181 	    } else {
   2182 		/* the button has been up */
   2183 	    }
   2184 	}
   2185 	button <<= 1;
   2186 	mask >>= 1;
   2187     }
   2188 }
   2189 
   2190 static int
   2191 r_timeout(void)
   2192 {
   2193     struct timeval tv;
   2194     struct timeval tv1;
   2195     struct timeval tv2;
   2196 
   2197     if (states[mouse_button_state].timeout)
   2198 	return TRUE;
   2199     gettimeofday(&tv1, NULL);
   2200     tv2.tv_sec = rodent.button2timeout/1000;
   2201     tv2.tv_usec = (rodent.button2timeout%1000)*1000;
   2202     timersub(&tv1, &tv2, &tv);
   2203     return timercmp(&tv, &mouse_button_state_tv, >);
   2204 }
   2205 
   2206 /* $XConsortium: posix_tty.c,v 1.3 95/01/05 20:42:55 kaleb Exp $ */
   2207 /* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/shared/posix_tty.c,v 3.4 1995/01/28 17:05:03 dawes Exp $ */
   2208 /*
   2209  * Copyright 1993 by David Dawes <dawes (at) physics.su.oz.au>
   2210  *
   2211  * Permission to use, copy, modify, distribute, and sell this software and its
   2212  * documentation for any purpose is hereby granted without fee, provided that
   2213  * the above copyright notice appear in all copies and that both that
   2214  * copyright notice and this permission notice appear in supporting
   2215  * documentation, and that the name of David Dawes
   2216  * not be used in advertising or publicity pertaining to distribution of
   2217  * the software without specific, written prior permission.
   2218  * David Dawes makes no representations about the suitability of this
   2219  * software for any purpose.  It is provided "as is" without express or
   2220  * implied warranty.
   2221  *
   2222  * DAVID DAWES DISCLAIMS ALL WARRANTIES WITH REGARD TO
   2223  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
   2224  * FITNESS, IN NO EVENT SHALL DAVID DAWES BE LIABLE FOR
   2225  * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
   2226  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
   2227  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
   2228  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   2229  *
   2230  */
   2231 
   2232 
   2233 static void
   2234 setmousespeed(int old, int new, unsigned cflag)
   2235 {
   2236 	struct termios tty;
   2237 	const char *c;
   2238 
   2239 	if (tcgetattr(rodent.mfd, &tty) < 0)
   2240 	{
   2241 		logwarn("unable to get status of mouse fd");
   2242 		return;
   2243 	}
   2244 
   2245 	tty.c_iflag = IGNBRK | IGNPAR;
   2246 	tty.c_oflag = 0;
   2247 	tty.c_lflag = 0;
   2248 	tty.c_cflag = (tcflag_t)cflag;
   2249 	tty.c_cc[VTIME] = 0;
   2250 	tty.c_cc[VMIN] = 1;
   2251 
   2252 	switch (old)
   2253 	{
   2254 	case 9600:
   2255 		cfsetispeed(&tty, B9600);
   2256 		cfsetospeed(&tty, B9600);
   2257 		break;
   2258 	case 4800:
   2259 		cfsetispeed(&tty, B4800);
   2260 		cfsetospeed(&tty, B4800);
   2261 		break;
   2262 	case 2400:
   2263 		cfsetispeed(&tty, B2400);
   2264 		cfsetospeed(&tty, B2400);
   2265 		break;
   2266 	case 1200:
   2267 	default:
   2268 		cfsetispeed(&tty, B1200);
   2269 		cfsetospeed(&tty, B1200);
   2270 	}
   2271 
   2272 	if (tcsetattr(rodent.mfd, TCSADRAIN, &tty) < 0)
   2273 	{
   2274 		logwarn("unable to set status of mouse fd");
   2275 		return;
   2276 	}
   2277 
   2278 	switch (new)
   2279 	{
   2280 	case 9600:
   2281 		c = "*q";
   2282 		cfsetispeed(&tty, B9600);
   2283 		cfsetospeed(&tty, B9600);
   2284 		break;
   2285 	case 4800:
   2286 		c = "*p";
   2287 		cfsetispeed(&tty, B4800);
   2288 		cfsetospeed(&tty, B4800);
   2289 		break;
   2290 	case 2400:
   2291 		c = "*o";
   2292 		cfsetispeed(&tty, B2400);
   2293 		cfsetospeed(&tty, B2400);
   2294 		break;
   2295 	case 1200:
   2296 	default:
   2297 		c = "*n";
   2298 		cfsetispeed(&tty, B1200);
   2299 		cfsetospeed(&tty, B1200);
   2300 	}
   2301 
   2302 	if (rodent.rtype == MOUSE_PROTO_LOGIMOUSEMAN
   2303 	    || rodent.rtype == MOUSE_PROTO_LOGI)
   2304 	{
   2305 		if (write(rodent.mfd, c, 2) != 2)
   2306 		{
   2307 			logwarn("unable to write to mouse fd");
   2308 			return;
   2309 		}
   2310 	}
   2311 	usleep(100000);
   2312 
   2313 	if (tcsetattr(rodent.mfd, TCSADRAIN, &tty) < 0)
   2314 		logwarn("unable to set status of mouse fd");
   2315 }
   2316 
   2317 /*
   2318  * PnP COM device support
   2319  *
   2320  * It's a simplistic implementation, but it works :-)
   2321  * KY, 31/7/97.
   2322  */
   2323 
   2324 /*
   2325  * Try to elicit a PnP ID as described in
   2326  * Microsoft, Hayes: "Plug and Play External COM Device Specification,
   2327  * rev 1.00", 1995.
   2328  *
   2329  * The routine does not fully implement the COM Enumerator as par Section
   2330  * 2.1 of the document.  In particular, we don't have idle state in which
   2331  * the driver software monitors the com port for dynamic connection or
   2332  * removal of a device at the port, because `moused' simply quits if no
   2333  * device is found.
   2334  *
   2335  * In addition, as PnP COM device enumeration procedure slightly has
   2336  * changed since its first publication, devices which follow earlier
   2337  * revisions of the above spec. may fail to respond if the rev 1.0
   2338  * procedure is used. XXX
   2339  */
   2340 static int
   2341 pnpwakeup1(void)
   2342 {
   2343     struct pollfd set[1];
   2344     int i;
   2345 
   2346     /*
   2347      * This is the procedure described in rev 1.0 of PnP COM device spec.
   2348      * Unfortunately, some devices which comform to earlier revisions of
   2349      * the spec gets confused and do not return the ID string...
   2350      */
   2351     debug("PnP COM device rev 1.0 probe...");
   2352 
   2353     /* port initialization (2.1.2) */
   2354     ioctl(rodent.mfd, TIOCMGET, &i);
   2355     i |= TIOCM_DTR;		/* DTR = 1 */
   2356     i &= ~TIOCM_RTS;		/* RTS = 0 */
   2357     ioctl(rodent.mfd, TIOCMSET, &i);
   2358     usleep(240000);
   2359 
   2360     /*
   2361      * The PnP COM device spec. dictates that the mouse must set DSR
   2362      * in response to DTR (by hardware or by software) and that if DSR is
   2363      * not asserted, the host computer should think that there is no device
   2364      * at this serial port.  But some mice just don't do that...
   2365      */
   2366     ioctl(rodent.mfd, TIOCMGET, &i);
   2367     debug("modem status 0%o", i);
   2368     if ((i & TIOCM_DSR) == 0)
   2369 	return FALSE;
   2370 
   2371     /* port setup, 1st phase (2.1.3) */
   2372     setmousespeed(1200, 1200, (CS7 | CREAD | CLOCAL | HUPCL));
   2373     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 0, RTS = 0 */
   2374     ioctl(rodent.mfd, TIOCMBIC, &i);
   2375     usleep(240000);
   2376     i = TIOCM_DTR;		/* DTR = 1, RTS = 0 */
   2377     ioctl(rodent.mfd, TIOCMBIS, &i);
   2378     usleep(240000);
   2379 
   2380     /* wait for response, 1st phase (2.1.4) */
   2381     i = FREAD;
   2382     ioctl(rodent.mfd, TIOCFLUSH, &i);
   2383     i = TIOCM_RTS;		/* DTR = 1, RTS = 1 */
   2384     ioctl(rodent.mfd, TIOCMBIS, &i);
   2385 
   2386     /* try to read something */
   2387     set[0].fd = rodent.mfd;
   2388     set[0].events = POLLIN;
   2389     if (poll(set, 1, 240) > 0) {
   2390 	debug("pnpwakeup1(): valid response in first phase.");
   2391 	return TRUE;
   2392     }
   2393 
   2394     /* port setup, 2nd phase (2.1.5) */
   2395     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 0, RTS = 0 */
   2396     ioctl(rodent.mfd, TIOCMBIC, &i);
   2397     usleep(240000);
   2398 
   2399     /* wait for response, 2nd phase (2.1.6) */
   2400     i = FREAD;
   2401     ioctl(rodent.mfd, TIOCFLUSH, &i);
   2402     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 1, RTS = 1 */
   2403     ioctl(rodent.mfd, TIOCMBIS, &i);
   2404 
   2405     /* try to read something */
   2406     if (poll(set, 1, 240) > 0) {
   2407 	debug("pnpwakeup1(): valid response in second phase.");
   2408 	return TRUE;
   2409     }
   2410 
   2411     return FALSE;
   2412 }
   2413 
   2414 static int
   2415 pnpwakeup2(void)
   2416 {
   2417     struct pollfd set[1];
   2418     int i;
   2419 
   2420     /*
   2421      * This is a simplified procedure; it simply toggles RTS.
   2422      */
   2423     debug("alternate probe...");
   2424 
   2425     ioctl(rodent.mfd, TIOCMGET, &i);
   2426     i |= TIOCM_DTR;		/* DTR = 1 */
   2427     i &= ~TIOCM_RTS;		/* RTS = 0 */
   2428     ioctl(rodent.mfd, TIOCMSET, &i);
   2429     usleep(240000);
   2430 
   2431     setmousespeed(1200, 1200, (CS7 | CREAD | CLOCAL | HUPCL));
   2432 
   2433     /* wait for response */
   2434     i = FREAD;
   2435     ioctl(rodent.mfd, TIOCFLUSH, &i);
   2436     i = TIOCM_DTR | TIOCM_RTS;	/* DTR = 1, RTS = 1 */
   2437     ioctl(rodent.mfd, TIOCMBIS, &i);
   2438 
   2439     /* try to read something */
   2440     set[0].fd = rodent.mfd;
   2441     set[0].events = POLLIN;
   2442     if (poll(set, 1, 240) > 0) {
   2443 	debug("pnpwakeup2(): valid response.");
   2444 	return TRUE;
   2445     }
   2446 
   2447     return FALSE;
   2448 }
   2449 
   2450 static int
   2451 pnpgets(char *buf)
   2452 {
   2453     struct pollfd set[1];
   2454     int begin;
   2455     int i;
   2456     char c;
   2457 
   2458     if (!pnpwakeup1() && !pnpwakeup2()) {
   2459 	/*
   2460 	 * According to PnP spec, we should set DTR = 1 and RTS = 0 while
   2461 	 * in idle state.  But, `moused' shall set DTR = RTS = 1 and proceed,
   2462 	 * assuming there is something at the port even if it didn't
   2463 	 * respond to the PnP enumeration procedure.
   2464 	 */
   2465 	i = TIOCM_DTR | TIOCM_RTS;		/* DTR = 1, RTS = 1 */
   2466 	ioctl(rodent.mfd, TIOCMBIS, &i);
   2467 	return 0;
   2468     }
   2469 
   2470     /* collect PnP COM device ID (2.1.7) */
   2471     begin = -1;
   2472     i = 0;
   2473     usleep(240000);	/* the mouse must send `Begin ID' within 200msec */
   2474     while (read(rodent.mfd, &c, 1) == 1) {
   2475 	/* we may see "M", or "M3..." before `Begin ID' */
   2476 	buf[i++] = c;
   2477         if ((c == 0x08) || (c == 0x28)) {	/* Begin ID */
   2478 	    debug("begin-id %02x", c);
   2479 	    begin = i - 1;
   2480 	    break;
   2481         }
   2482         debug("%c %02x", c, c);
   2483 	if (i >= 256)
   2484 	    break;
   2485     }
   2486     if (begin < 0) {
   2487 	/* we haven't seen `Begin ID' in time... */
   2488 	goto connect_idle;
   2489     }
   2490 
   2491     ++c;			/* make it `End ID' */
   2492     set[0].fd = rodent.mfd;
   2493     set[0].events = POLLIN;
   2494     for (;;) {
   2495         if (poll(set, 1, 240) <= 0)
   2496 	    break;
   2497 
   2498 	read(rodent.mfd, &buf[i], 1);
   2499         if (buf[i++] == c)	/* End ID */
   2500 	    break;
   2501 	if (i >= 256)
   2502 	    break;
   2503     }
   2504     if (begin > 0) {
   2505 	i -= begin;
   2506 	bcopy(&buf[begin], &buf[0], i);
   2507     }
   2508     /* string may not be human readable... */
   2509     debug("len:%d, '%-*.*s'", i, i, i, buf);
   2510 
   2511     if (buf[i - 1] == c)
   2512 	return i;		/* a valid PnP string */
   2513 
   2514     /*
   2515      * According to PnP spec, we should set DTR = 1 and RTS = 0 while
   2516      * in idle state.  But, `moused' shall leave the modem control lines
   2517      * as they are. See above.
   2518      */
   2519 connect_idle:
   2520 
   2521     /* we may still have something in the buffer */
   2522     return ((i > 0) ? i : 0);
   2523 }
   2524 
   2525 static int
   2526 pnpparse(pnpid_t *id, char *buf, int len)
   2527 {
   2528     char s[3];
   2529     int offset;
   2530     int sum = 0;
   2531     int i, j;
   2532 
   2533     id->revision = 0;
   2534     id->eisaid = "";
   2535     id->serial = NULL;
   2536     id->class = NULL;
   2537     id->compat = "";
   2538     id->description = "";
   2539     id->neisaid = 0;
   2540     id->nserial = 0;
   2541     id->nclass = 0;
   2542     id->ncompat = 0;
   2543     id->ndescription = 0;
   2544 
   2545     if ((buf[0] != 0x28) && (buf[0] != 0x08)) {
   2546 	/* non-PnP mice */
   2547 	switch(buf[0]) {
   2548 	default:
   2549 	    return FALSE;
   2550 	case 'M': /* Microsoft */
   2551 	    id->eisaid = "PNP0F01";
   2552 	    break;
   2553 	case 'H': /* MouseSystems */
   2554 	    id->eisaid = "PNP0F04";
   2555 	    break;
   2556 	}
   2557 	id->neisaid = strlen(id->eisaid);
   2558 	id->class = "MOUSE";
   2559 	id->nclass = strlen(id->class);
   2560 	debug("non-PnP mouse '%c'", buf[0]);
   2561 	return TRUE;
   2562     }
   2563 
   2564     /* PnP mice */
   2565     offset = 0x28 - buf[0];
   2566 
   2567     /* calculate checksum */
   2568     for (i = 0; i < len - 3; ++i) {
   2569 	sum += buf[i];
   2570 	buf[i] += offset;
   2571     }
   2572     sum += buf[len - 1];
   2573     for (; i < len; ++i)
   2574 	buf[i] += offset;
   2575     debug("PnP ID string: '%*.*s'", len, len, buf);
   2576 
   2577     /* revision */
   2578     buf[1] -= offset;
   2579     buf[2] -= offset;
   2580     id->revision = ((buf[1] & 0x3f) << 6) | (buf[2] & 0x3f);
   2581     debug("PnP rev %d.%02d", id->revision / 100, id->revision % 100);
   2582 
   2583     /* EISA vendor and product ID */
   2584     id->eisaid = &buf[3];
   2585     id->neisaid = 7;
   2586 
   2587     /* option strings */
   2588     i = 10;
   2589     if (buf[i] == '\\') {
   2590         /* device serial # */
   2591         for (j = ++i; i < len; ++i) {
   2592             if (buf[i] == '\\')
   2593 		break;
   2594         }
   2595 	if (i >= len)
   2596 	    i -= 3;
   2597 	if (i - j == 8) {
   2598             id->serial = &buf[j];
   2599             id->nserial = 8;
   2600 	}
   2601     }
   2602     if (buf[i] == '\\') {
   2603         /* PnP class */
   2604         for (j = ++i; i < len; ++i) {
   2605             if (buf[i] == '\\')
   2606 		break;
   2607         }
   2608 	if (i >= len)
   2609 	    i -= 3;
   2610 	if (i > j + 1) {
   2611             id->class = &buf[j];
   2612             id->nclass = i - j;
   2613         }
   2614     }
   2615     if (buf[i] == '\\') {
   2616 	/* compatible driver */
   2617         for (j = ++i; i < len; ++i) {
   2618             if (buf[i] == '\\')
   2619 		break;
   2620         }
   2621 	/*
   2622 	 * PnP COM spec prior to v0.96 allowed '*' in this field,
   2623 	 * it's not allowed now; just ignore it.
   2624 	 */
   2625 	if (buf[j] == '*')
   2626 	    ++j;
   2627 	if (i >= len)
   2628 	    i -= 3;
   2629 	if (i > j + 1) {
   2630             id->compat = &buf[j];
   2631             id->ncompat = i - j;
   2632         }
   2633     }
   2634     if (buf[i] == '\\') {
   2635 	/* product description */
   2636         for (j = ++i; i < len; ++i) {
   2637             if (buf[i] == ';')
   2638 		break;
   2639         }
   2640 	if (i >= len)
   2641 	    i -= 3;
   2642 	if (i > j + 1) {
   2643             id->description = &buf[j];
   2644             id->ndescription = i - j;
   2645         }
   2646     }
   2647 
   2648     /* checksum exists if there are any optional fields */
   2649     if ((id->nserial > 0) || (id->nclass > 0)
   2650 	|| (id->ncompat > 0) || (id->ndescription > 0)) {
   2651         debug("PnP checksum: 0x%X", sum);
   2652         snprintf(s, sizeof(s), "%02X", sum & 0x0ff);
   2653         if (strncmp(s, &buf[len - 3], 2) != 0) {
   2654 #if 0
   2655             /*
   2656 	     * I found some mice do not comply with the PnP COM device
   2657 	     * spec regarding checksum... XXX
   2658 	     */
   2659             logwarnx("PnP checksum error", 0);
   2660 	    return FALSE;
   2661 #endif
   2662         }
   2663     }
   2664 
   2665     return TRUE;
   2666 }
   2667 
   2668 static symtab_t *
   2669 pnpproto(pnpid_t *id)
   2670 {
   2671     symtab_t *t;
   2672     int i, j;
   2673 
   2674     if (id->nclass > 0)
   2675 	if ( strncmp(id->class, "MOUSE", id->nclass) != 0 &&
   2676 	     strncmp(id->class, "TABLET", id->nclass) != 0)
   2677 	    /* this is not a mouse! */
   2678 	    return NULL;
   2679 
   2680     if (id->neisaid > 0) {
   2681         t = gettoken(pnpprod, id->eisaid, id->neisaid);
   2682 	if (t->val != MOUSE_PROTO_UNKNOWN)
   2683             return t;
   2684     }
   2685 
   2686     /*
   2687      * The 'Compatible drivers' field may contain more than one
   2688      * ID separated by ','.
   2689      */
   2690     if (id->ncompat <= 0)
   2691 	return NULL;
   2692     for (i = 0; i < id->ncompat; ++i) {
   2693         for (j = i; id->compat[i] != ','; ++i)
   2694             if (i >= id->ncompat)
   2695 		break;
   2696         if (i > j) {
   2697             t = gettoken(pnpprod, id->compat + j, i - j);
   2698 	    if (t->val != MOUSE_PROTO_UNKNOWN)
   2699                 return t;
   2700 	}
   2701     }
   2702 
   2703     return NULL;
   2704 }
   2705 
   2706 /* name/val mapping */
   2707 
   2708 static symtab_t *
   2709 gettoken(symtab_t *tab, const char *s, int len)
   2710 {
   2711     int i;
   2712 
   2713     for (i = 0; tab[i].name != NULL; ++i) {
   2714 	if (strncmp(tab[i].name, s, len) == 0)
   2715 	    break;
   2716     }
   2717     return &tab[i];
   2718 }
   2719 
   2720 static const char *
   2721 gettokenname(symtab_t *tab, int val)
   2722 {
   2723     int i;
   2724 
   2725     for (i = 0; tab[i].name != NULL; ++i) {
   2726 	if (tab[i].val == val)
   2727 	    return tab[i].name;
   2728     }
   2729     return NULL;
   2730 }
   2731 
   2732 
   2733 /*
   2734  * code to read from the Genius Kidspad tablet.
   2735 
   2736 The tablet responds to the COM PnP protocol 1.0 with EISA-ID KYE0005,
   2737 and to pre-pnp probes (RTS toggle) with 'T' (tablet ?)
   2738 9600, 8 bit, parity odd.
   2739 
   2740 The tablet puts out 5 bytes. b0 (mask 0xb8, value 0xb8) contains
   2741 the proximity, tip and button info:
   2742    (byte0 & 0x1)	true = tip pressed
   2743    (byte0 & 0x2)	true = button pressed
   2744    (byte0 & 0x40)	false = pen in proximity of tablet.
   2745 
   2746 The next 4 bytes are used for coordinates xl, xh, yl, yh (7 bits valid).
   2747 
   2748 Only absolute coordinates are returned, so we use the following approach:
   2749 we store the last coordinates sent when the pen went out of the tablet,
   2750 
   2751 
   2752  *
   2753  */
   2754 
   2755 typedef enum {
   2756     S_IDLE, S_PROXY, S_FIRST, S_DOWN, S_UP
   2757 } k_status;
   2758 
   2759 static int
   2760 kidspad(u_char rxc, mousestatus_t *act)
   2761 {
   2762     static int buf[5];
   2763     static int buflen = 0, b_prev = 0 , x_prev = -1, y_prev = -1;
   2764     static k_status status = S_IDLE;
   2765     static struct timeval now;
   2766 
   2767     int x, y;
   2768 
   2769     if (buflen > 0 && (rxc & 0x80) ) {
   2770 	fprintf(stderr, "invalid code %d 0x%x\n", buflen, rxc);
   2771 	buflen = 0;
   2772     }
   2773     if (buflen == 0 && (rxc & 0xb8) != 0xb8 ) {
   2774 	fprintf(stderr, "invalid code 0 0x%x\n", rxc);
   2775 	return 0; /* invalid code, no action */
   2776     }
   2777     buf[buflen++] = rxc;
   2778     if (buflen < 5)
   2779 	return 0;
   2780 
   2781     buflen = 0; /* for next time... */
   2782 
   2783     x = buf[1]+128*(buf[2] - 7);
   2784     if (x < 0) x = 0;
   2785     y = 28*128 - (buf[3] + 128* (buf[4] - 7));
   2786     if (y < 0) y = 0;
   2787 
   2788     x /= 8;
   2789     y /= 8;
   2790 
   2791     act->flags = 0;
   2792     act->obutton = act->button;
   2793     act->dx = act->dy = act->dz = 0;
   2794     gettimeofday(&now, NULL);
   2795     if ( buf[0] & 0x40 ) /* pen went out of reach */
   2796 	status = S_IDLE;
   2797     else if (status == S_IDLE) { /* pen is newly near the tablet */
   2798 	act->flags |= MOUSE_POSCHANGED; /* force update */
   2799 	status = S_PROXY;
   2800 	x_prev = x;
   2801 	y_prev = y;
   2802     }
   2803     act->dx = x - x_prev;
   2804     act->dy = y - y_prev;
   2805     if (act->dx || act->dy)
   2806 	act->flags |= MOUSE_POSCHANGED;
   2807     x_prev = x;
   2808     y_prev = y;
   2809     if (b_prev != 0 && b_prev != buf[0]) { /* possibly record button change */
   2810 	act->button = 0;
   2811 	if ( buf[0] & 0x01 ) /* tip pressed */
   2812 	    act->button |= MOUSE_BUTTON1DOWN;
   2813 	if ( buf[0] & 0x02 ) /* button pressed */
   2814 	    act->button |= MOUSE_BUTTON2DOWN;
   2815 	act->flags |= MOUSE_BUTTONSCHANGED;
   2816     }
   2817     b_prev = buf[0];
   2818     return act->flags;
   2819 }
   2820