summaryrefslogtreecommitdiff
path: root/XTrap/xtrapdi.c
blob: d09b2120a24c21837ef8637dbd8a000b37d44a28 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
/* $XFree86: xc/programs/Xserver/XTrap/xtrapdi.c,v 1.7 2003/10/28 22:52:10 tsi Exp $ */
/*****************************************************************************
Copyright 1987, 1988, 1989, 1990, 1991 by Digital Equipment Corp., Maynard, MA
X11R6 Changes Copyright (c) 1994 by Robert Chesler of Absol-Puter, Hudson, NH.

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  

DIGITAL AND ABSOL-PUTER DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS, IN NO EVENT SHALL DIGITAL OR ABSOL-PUTER BE LIABLE FOR ANY
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

*****************************************************************************/
/*
 *  ABSTRACT:
 *
 *      This module is the main module for extension initialization and setup.
 *      It is called by the server and by clients using the extension.
 *      This is shared code and is subject to change only by team approval.
 *
 *  CONTRIBUTORS:
 *
 *      Dick Annicchiarico
 *      Robert Chesler
 *      Gene Durso
 *      Marc Evans
 *      Alan Jamison
 *      Mark Henry
 *      Ken Miller
 *
 *  CHANGES:
 *
 *	Robert Chesler - grab-impreviousness patch to improve grab behavior
 *	Robert Chesler - add client arg to swapping routines for X11R6 port
 *
 */

/*-----------------*
 *  Include Files  *
 *-----------------*/

#define NEED_REPLIES
#define NEED_EVENTS
#ifndef EXTMODULE
#include <stdio.h>
#include <errno.h>
#include <X11/Xos.h>
#else
#include "xf86_ansic.h"
#endif
#include <X11/X.h>
#include <X11/Xproto.h>
#include "input.h"              /* Server DevicePtr definitions */
#include "misc.h"               /* Server swapping macros */
#include "dixstruct.h"          /* Server ClientRec definitions */
#include "resource.h"           /* Used with the MakeAtom call */
#ifdef PC
# include "scrintst.h"          /* Screen struct */
# include "extnsist.h"
#else
# include "extnsionst.h"        /* Server ExtensionEntry definitions */
# include "scrnintstr.h"        /* Screen struct */
#endif
#include "pixmapstr.h"          /* DrawableRec */
#include "windowstr.h"          /* Drawable Lookup structures */
#include <X11/extensions/xtrapdi.h>
#include <X11/extensions/xtrapddmi.h>
#include <X11/extensions/xtrapproto.h>
#include "colormapst.h"
#ifdef PANORAMIX
#include "panoramiX.h"
#include "panoramiXsrv.h"
#include "cursor.h"
#endif


/*----------------------------*
 *  Global Data Declarations  *
 *----------------------------*/

DevicePtr XETrapKbdDev                       = NULL;
DevicePtr XETrapPtrDev                       = NULL;
int    XETrapErrorBase                       = 0L;
xXTrapGetAvailReply XETrap_avail;            /* What's available to clients */

globalref int_function XETrapDispatchVector[10L]; /* Vector of XTrap Rtns */
globalref int_function XETSwDispatchVector[10L];  /* Swapped XTrap Rtns */

globalref int_function XETrapProcVector[256L]; /* The "shadowed" ProcVector */
    /* The "real" EventVector (XTrap creates it till events 
     * truly become vectored
     */
#ifndef VECTORED_EVENTS
globalref int_function EventProcVector[XETrapCoreEvents];
#else
extern WindowPtr GetCurrentRootWindow();
globalref int_function EventProcVector[128L];
#endif
static int_function keybd_process_inp = NULL;  /* Used for VECTORED_EVENTS */
    /* The "shadowed" Event Vector */
globalref int_function XETrapEventProcVector[XETrapCoreEvents];

globalref void_function XETSwProcVector[256L];/* Vector of Req swapping rtns */

/* This macro returns a true/false indicator based on whether it changes the
 * environment state bits local to the server extension. This is based on the
 * idea that if a valid flag is set and the corresponding data bit is not in
 * the same state as desired, then true is returned, otherwise false is
 * returned.
 */
#define _CheckChangeBit(valid,data,local,bit) \
    (BitIsFalse(valid,bit) ? 0L :                                \
        (((BitIsTrue(data,bit) && BitIsTrue(local,bit)) ||       \
         (BitIsFalse(data,bit) && BitIsFalse(local,bit))) ? 0L : \
         (BitToggle(local,bit), 1L)))

/* This macro is designed to return the number of elements in an
 * automatically allocated array.
 */
#ifndef ASIZE
#define ASIZE(array)    (sizeof(array)/sizeof(array[0L]))
#endif

/* This macro is designed to return the number of long words beyond
 * XETrapMinRepSize contained in a data structure.
 */
#ifndef XEXTRA
#define XEXTRA(s) \
    ((sizeof(s)+(sizeof(CARD32)-1L)-XETrapMinRepSize)/sizeof(CARD32))
#endif

/* Static Declarations known to XTrap Only
 * All XTrap clients refer to these single copies!
 */
/* This carries all of the information XTrap uses for internal information */
static XETrapEnv *XETenv[MAXCLIENTS]         = {NULL};
#ifndef RESTYPE
#define RESTYPE unsigned long
#endif
static RESTYPE   XETrapClass = 0L;      /* Resource class for this extension */
static RESTYPE   XETrapType  = 0L;      /* Resource type for this extension */
static Bool      gate_closed = False;   /* The global "gatekeeper" */
static Bool      key_ignore  = False;   /* The global "keymaster" */
static Bool      ignore_grabs = False;
static CARD8     next_key = XEKeyIsClear; /* Echo, Clear, or Other */
#ifdef VECTORED_EVENTS
static INT16     current_screen = -1L;   /* Current screen for events */
#endif
static INT16     vectored_requests[256L] = {0L}; /* cnt of vectoring clients */
static INT16     vectored_events[KeyPress+MotionNotify]  = {0L};
typedef struct _client_list
{
    struct _client_list    *next;
    ClientPtr              client;
} ClientList;
static ClientList io_clients;  /* Linked-list of clients currently doing I/O */
static ClientList stats_clients;  /* Linked-list of clients collecting stats */
static ClientList cmd_clients;   /* Linked-list of clients using command key */

/*----------------------------*
 *  Forward Declarations
 *----------------------------*/
static void _SwapProc (int (**f1 )(), int (**f2 )());
static void sXETrapEvent (xETrapDataEvent *from , xETrapDataEvent *to );
static int add_accelerator_node (ClientPtr client , ClientList *accel );
static void remove_accelerator_node (ClientPtr client , ClientList *accel );
static void update_protocol (xXTrapGetReq *reqptr , ClientPtr client );
#ifdef COLOR_REPLIES
static void GetSendColorRep (ClientPtr client , xResourceReq *req );
static void GetSendNamedColorRep (ClientPtr client , xResourceReq *req );
static void GetSendColorCellsRep (ClientPtr client , xResourceReq *req );
static void GetSendColorPlanesRep (ClientPtr client , xResourceReq *req );
#endif

/*
 *  DESCRIPTION:
 *
 *      This routine is called by the server when a given client
 *      goes away (as identified by the first argument). All
 *      memory allocations, misc. values specific to a given
 *      client would be reset here.
 *
 */
int XETrapDestroyEnv(pointer value, XID id)
{
    xXTrapReq request;
    XETrapEnv *penv = XETenv[(long)value];

    XETrapReset(&request,penv->client);
    /* Free any memory malloc'd for a particular client here */
    /* In case stop I/O wasn't received for this client */
    if (penv->stats)
    {   /* Remove from client accelerator list */
        remove_accelerator_node(penv->client, &stats_clients);
        Xfree(penv->stats);     /* Free the stats buckets */
    }
    if (cmd_clients.next == NULL)
    { /* No more command key clients!  Let's reset the gate */
        gate_closed = False;
        key_ignore  = False;
        next_key = XEKeyIsClear;
    }

#ifdef VECTORED_EVENTS
    current_screen = -1L;       /* Invalidate current screen */
#endif

#ifdef VERBOSE
    ErrorF("%s:  Client '%d' Disconnected\n", XTrapExtName, 
        penv->client->index);
#endif

    Xfree(penv);
    XETenv[(long)value] = NULL;

    return 0;
}                       

/*
 *  DESCRIPTION:
 *
 *      This routine is called by the server when the last client
 *      (the session manager in most cases) goes away. This is server
 *      reset. When the server comes back up, this extension will not
 *      be loaded unless this routine makes the proper arrangements.
 *
 *      The real concern here is to unload the extension
 *      and possibly make arragements to be called upon
 *      server restart.
 *
 */
void XETrapCloseDown(ExtensionEntry *extEntry)
{                                           
    long i;

    for (i=0L; i<MAXCLIENTS; i++)
    {
        if (XETenv[i] != NULL)
        {
            XETrapDestroyEnv((pointer)i,0L);
        }
    }
    ignore_grabs = False;
    return;
}                       

/*
 *
 *  DESCRIPTION:
 *
 *      This routine has been created because of the initialization
 *      order that X uses, such that extensions are initialized before
 *      devices. This means that this extension must perform a second
 *      level of initialization to obtain the device references at some
 *      point after they have been initialized. It is assumed that when
 *      a client establishes communication with the extension that the
 *      devices havae been initialized, and therefore this function can
 *      obtain the information it needs.
 *
 *      In obtaining the information, this function also places its own
 *      functions in place of the *standard* functions. The original
 *      functions are retained for vectoring purposes.
 */

Bool XETrapRedirectDevices()
{
    Bool retval = True;

    /* Do we need to redirect the keyboard device? */
    if (XETrapKbdDev == NULL)
    {
        if ((XETrapKbdDev = LookupKeyboardDevice()) == NULL)
        {
            retval = False;
        }
        else
        {
            EventProcVector[KeyPress] =
                (int_function)XETrapKbdDev->realInputProc;
            EventProcVector[KeyRelease] =
                (int_function)XETrapKbdDev->realInputProc;
        }
#ifdef VECTORED_EVENTS
        keybd_process_inp = EventProcVector[KeyPress];
        EventProcVector[KeyPress] = EventProcVector[KeyRelease] = NULL;
        XETrapEventProcVector[KeyPress]   = XETrapEventVector;
        XETrapEventProcVector[KeyRelease] = XETrapEventVector;
#else   /* !VECTORED_EVENTS */
        XETrapEventProcVector[KeyPress]   = XETrapKeyboard;
        XETrapEventProcVector[KeyRelease] = XETrapKeyboard;
#endif /* !VECTORED_EVENTS */
    }
    /* Do we need to redirect the pointer device? */
#ifndef VECTORED_EVENTS
    if (XETrapPtrDev == NULL)
    {
        if ((XETrapPtrDev = LookupPointerDevice()) == 0L)
        {
            retval = False;
        }
        else
        {
            EventProcVector[ButtonPress] = 
                (int_function)XETrapPtrDev->realInputProc;
            EventProcVector[ButtonRelease] = 
                (int_function)XETrapPtrDev->realInputProc;
            EventProcVector[MotionNotify] = 
                (int_function)XETrapPtrDev->realInputProc;
        }
        XETrapEventProcVector[ButtonPress]   = XETrapPointer;
        XETrapEventProcVector[ButtonRelease] = XETrapPointer;
        XETrapEventProcVector[MotionNotify]  = XETrapPointer;
    }
#endif /* !VECTORED_EVENTS */
    return(retval);
}

/*
 *
 *  DESCRIPTION:
 *
 *      This routine is the main entry point for the Xtrap extension. It is
 *      called by the server to inititalize the Xtrap extension.  Once the
 *      extension is initialized, life is controlled by the XtrapDispatch
 *      routine by the requests it will handle.
 *
 *      Initializes all the XTrap data structures with the proper
 *      addresses of defined routines that will help control the extension.
 *      It is vital that the extension state be kept accurate so that only
 *      one call to this routine be made.
 *
 */

void DEC_XTRAPInit()
{
    register ExtensionEntry *extEntry;
    unsigned int i;
    Atom a;

    /* Make the extension known to the server. Must be done every time
     * DEC_XTRAPInit is called, else server will think it failed.
     */
    if ((extEntry = AddExtension(XTrapExtName,XETrapNumEvents,
        XETrapNumErrors,XETrapDispatch,sXETrapDispatch,XETrapCloseDown
        ,StandardMinorOpcode)) == NULL)
    {                                        
        ErrorF("%s:  AddExtension Failed!\n", XTrapExtName); 
        return;
    }
#ifdef VERBOSE
        ErrorF("%s:  AddExtension assigned Major Opcode '%d'\n",
            XTrapExtName, extEntry->base);
#endif
    XETrap_avail.data.major_opcode = extEntry->base;
    XETrapErrorBase                = extEntry->errorBase;
    XETrap_avail.data.event_base   = extEntry->eventBase;

    /* Set up our swapped reply vector */
    ReplySwapVector[XETrap_avail.data.major_opcode] = 
	(void_function) sReplyXTrapDispatch;

    /* Set up our swapped event vector */
    EventSwapVector[extEntry->eventBase + XETrapData] = 
	(EventSwapPtr) sXETrapEvent;

    /* make an atom saying that the extension is present.  The 
     * adding of the resource occurs during XETrapCreateEnv().
     */
    if ((a = MakeAtom(XTrapExtName,strlen(XTrapExtName),1L)) == None ||
        (XETrapType  = CreateNewResourceType(XETrapDestroyEnv)) == 0L)
    {
        ErrorF("%s:  Setup can't create new resource type (%d,%d,%d)\n",
          XTrapExtName, (int)a,(int)XETrapClass,(int)XETrapType);
        return;
    }
    /* initialize the GetAvailable info reply here */
    XETrap_avail.hdr.type        = X_Reply;
    XETrap_avail.hdr.length      = XEXTRA(xXTrapGetAvailReply);
    XETrap_avail.data.xtrap_release  = XETrapRelease;
    XETrap_avail.data.xtrap_version  = XETrapVersion;
    XETrap_avail.data.xtrap_revision = XETrapRevision;
    XETrap_avail.data.pf_ident       = XETrapPlatform;
    XETrap_avail.data.max_pkt_size   = 0xFFFF;    /* very large number */
    for (i=0L; i<ASIZE(XETrap_avail.data.valid); i++)
    {
        XETrap_avail.data.valid[i] = 0L; /* Clear bits initially */
    }
    BitTrue(XETrap_avail.data.valid,XETrapTimestamp);
    BitTrue(XETrap_avail.data.valid,XETrapCmd);
    BitTrue(XETrap_avail.data.valid,XETrapCmdKeyMod);
    BitTrue(XETrap_avail.data.valid,XETrapRequest);
    BitTrue(XETrap_avail.data.valid,XETrapEvent);
    BitTrue(XETrap_avail.data.valid,XETrapMaxPacket);
    BitTrue(XETrap_avail.data.valid,XETrapStatistics);
    BitTrue(XETrap_avail.data.valid,XETrapWinXY);
    /* Not yet implemented */
    BitFalse(XETrap_avail.data.valid,XETrapCursor);
#ifndef _XINPUT
    BitFalse(XETrap_avail.data.valid,XETrapXInput);
#else
    BitTrue(XETrap_avail.data.valid,XETrapXInput);
#endif
#ifndef VECTORED_EVENTS
    BitFalse(XETrap_avail.data.valid,XETrapVectorEvents);
#else
    BitTrue(XETrap_avail.data.valid,XETrapVectorEvents);
#endif  /* VECTORED_EVENTS */
#ifndef COLOR_REPLIES
    BitFalse(XETrap_avail.data.valid,XETrapColorReplies);
#else
    BitTrue(XETrap_avail.data.valid,XETrapColorReplies);
#endif  /* COLOR_REPLIES */
    BitTrue(XETrap_avail.data.valid,XETrapGrabServer);
    /* initialize multi-client accelerator lists */
    io_clients.next = NULL;
    stats_clients.next = NULL;
    cmd_clients.next = NULL;
    for (i=0L; i<256L; i++)
    {
        vectored_requests[i] = 0L;
    }
    for (i=KeyPress; i<=MotionNotify; i++)
    {
        vectored_events[i] = 0L;
    }
    gate_closed = False;
    key_ignore  = False;
    next_key = XEKeyIsClear;
        
    XETrapPlatformSetup();
    /* Initialize any local memory we use */
    for (i=0L; i<ASIZE(EventProcVector); i++)
    {
        EventProcVector[i] = NULL;
#ifndef VECTORED_EVENTS
        XETrapEventProcVector[i] = NULL;
#else
        XETrapEventProcVector[i] = XETrapEventVector;
#endif
    }
    XETrapKbdDev = NULL;
    XETrapPtrDev = NULL;
    for (i=0L; i<ASIZE(XETrapProcVector); i++)
    {
        XETrapProcVector[i] = XETrapRequestVector;
    }
    for (i=128L; i<=255L; i++)
    {   /* Extension "swapped" requests are not implemented */
        XETSwProcVector[i] = NotImplemented;
    }
#ifdef VERBOSE
    ErrorF("%s:  Vers. %d.%d-%d successfully loaded\n", XTrapExtName,
        XETrap_avail.data.xtrap_release, 
        XETrap_avail.data.xtrap_version,
        XETrap_avail.data.xtrap_revision);
#endif

    return;
}

/*
 *  DESCRIPTION:
 *
 *      This procedure is called upon dispatch to allocate an
 *      environment structure for a new XTrap client.  The XETenv[]
 *      entry is allocated and initialized with default values.
 *      XETrapDestroyEnv() is responsible for deallocating this memory
 *      upon client termination.
 *
 *      Note: the status of this routine is returned to the caller of
 *      the Dispatch routine which will in turn SendErrorToClient if
 *      necessary.
 *
 */

int XETrapCreateEnv(ClientPtr client)
{
    XETrapEnv *penv = NULL;
    int status = Success;

    if (client->index > MAXCLIENTS)
    {
        status = BadImplementation;
    }
    else if ((XETenv[client->index] = (XETrapEnv *)Xcalloc(sizeof(XETrapEnv)))
        == NULL)
    {
        status = BadAlloc;
    }
    if (status == Success)
    {
        penv = XETenv[client->index];
        penv->client = client;
        penv->protocol = 31;    /* default to backwards compatibility */
        /* prep for client's departure (for memory dealloc, cleanup) */
        AddResource(FakeClientID(client->index),XETrapType,
            (pointer)(long)(client->index));
        if (XETrapRedirectDevices() == False)
        {
            status = XETrapErrorBase + BadDevices;
        }
        /* Initialize the current state */
        if (status == Success)
        {
            status = XETrapReset(NULL, penv->client);
        }
    }

#ifdef VECTORED_EVENTS
    current_screen = -1L;       /* Invalidate current screen */
#endif

#ifdef VERBOSE
    if (status == Success)
    {
        ErrorF("%s:  Client '%d' Connection Accepted\n", XTrapExtName, 
            penv->client->index);
    }
#endif

    return(status);
}

/*
 *  DESCRIPTION:
 *
 *      This procedure is defined for the call to AddExtension()
 *      in which it is expected to be a parameter of the call.
 *
 *      This routine will be called by the server dispatcher
 *      when a client makes a request that is handled
 *      by the extension and the byte ordering of the client is the
 *      SAME as that of the extension.
 *
 *      Note: the status of the requests is returned to the caller of
 *      the Dispatch routine which will in turn SendErrorToClient if
 *      necessary.
 */

int XETrapDispatch(ClientPtr client)
{

    REQUEST(xXTrapReq);
    register int status = Success;

    REQUEST_AT_LEAST_SIZE(xXTrapReq);

    /* Have we seen this client before? */
    if (XETenv[client->index] == NULL)
    {
        status = XETrapCreateEnv(client);
    }
    /* Do we have a valid request? */
    if (status == Success)
    {
        if (stuff->minor_opcode < ASIZE(XETrapDispatchVector))
        {
            /* Then vector to the pointed to function */
            status = 
                (*(XETrapDispatchVector[stuff->minor_opcode]))(stuff,client);
        }
        else
        {
            status = BadRequest;
        }
    }
    return(status);
}

/*
 *  DESCRIPTION:
 *                     
 *        This procedure is defined for the call to AddExtension()
 *        in which it is expected to be a parameter of the call.
 *
 *        This routine would ordinarily be called by the server
 *        dispatcher when a client makes a request that is handled
 *        by the extension and the byte ordering of the client is
 *        DIFFERENT than that of the extension.
 */

int sXETrapDispatch(ClientPtr client)
{

    REQUEST(xXTrapReq);
    register int status = Success;

    REQUEST_AT_LEAST_SIZE(xXTrapReq);

    /* Have we seen this client before? */
    if (XETenv[client->index] == NULL)
    {
        status = XETrapCreateEnv(client);
    }
    /* Do we have a valid request? */
    if (status == Success)
    {
        if (stuff->minor_opcode < ASIZE(XETSwDispatchVector))
        {
            /* Then vector to the pointed to function */
            status = 
                (*(XETSwDispatchVector[stuff->minor_opcode]))(stuff,client);
        }
        else
        {
            status = BadRequest;
        }
    }
    return(status);
}

/*
 *  DESCRIPTION:
 *
 *      This routine will place the extension in a steady and known 
 *      state.  Any current state will be reset.  This is called either
 *      by a client request (dispatched) or when a new client environment
 *      is created.
 *
 */
int XETrapReset(xXTrapReq *request, ClientPtr client)
{
    static xXTrapConfigReq DummyReq;
    register int i;
    register int status = Success;
    XETrapEnv *penv = XETenv[client->index];

    /* in case any i/o's pending */
    (void)XETrapStopTrap((xXTrapReq *)NULL, client);
    penv->cur.hdr.type        = X_Reply;
    penv->cur.hdr.length      = XEXTRA(xXTrapGetCurReply);
    /* Fill in a dummy config request to clear all elements */
    for (i=0L; i<ASIZE(DummyReq.config_flags_valid); i++)
    {
        DummyReq.config_flags_valid[i]  = 0xFFL;  /* set all the valid flags */
        DummyReq.config_flags_data[i]   = 0L;     /* clear all data flags */
    }
    /* Don't reset grab server arbitrarily, it must be explicitly 
     * de-configured.
     */
    BitSet(DummyReq.config_flags_data, XETrapGrabServer, ignore_grabs);
    for (i=0L; i< ASIZE(DummyReq.config_flags_req); i++)
    {
       DummyReq.config_flags_req[i] = 0xFF; /* Clear all protocol requests */
    }
    for (i=0L; i< ASIZE(DummyReq.config_flags_event); i++)
    {
        DummyReq.config_flags_event[i] = 0xFF;  /* Clear all protocol events */
    }
    /* Call config routine to clear all configurable fields */
    status = XETrapConfig(&DummyReq, client);
    /* reset the environment */
    for (i=0L; i<ASIZE(penv->cur.data_state_flags); i++)
    {
        penv->cur.data_state_flags[i] = 0L; /* Clear all env flags */
    }
    penv->cur.data_config_max_pkt_size  = XETrap_avail.data.max_pkt_size;
   
    return(status);
}

/*
 *  DESCRIPTION:
 *
 *      This function sends a reply back to the requesting client indicating
 *      the available states of the extension can be configured for.
 */
int XETrapGetAvailable(xXTrapGetReq *request, ClientPtr client)
{
    XETrapEnv *penv = XETenv[client->index];
    update_protocol(request, client);
    /* Initialize the reply as needed */
    XETrap_avail.data.xtrap_protocol = penv->protocol;
    XETrap_avail.hdr.detail = XETrap_GetAvailable;
    XETrap_avail.hdr.sequenceNumber = client->sequence;
    WriteReplyToClient(client, sizeof(xXTrapGetAvailReply), &XETrap_avail);
    return(Success);
}

/*
 *  DESCRIPTION:
 *
 *      This function sends a reply back to the requesting client indicating
 *      the current state of the extension.
 */
int XETrapGetCurrent(xXTrapReq *request, ClientPtr client)
{
    XETrapEnv *penv = XETenv[client->index];
    int rep_size = (penv->protocol == 31 ? 284 : sz_xXTrapGetCurReply);
    penv->cur.hdr.length      = (rep_size - 32L) / SIZEOF(CARD32);

    /* Initialize the reply as needed */
    penv->cur.hdr.detail = XETrap_GetCurrent;
    penv->cur.hdr.sequenceNumber  = client->sequence;
    WriteReplyToClient(client, rep_size, &(penv->cur));

    return(Success);
}

/*
 *  DESCRIPTION:
 *
 *      This function sends a reply back to the requesting client dumping
 *      statistics (counts) of requests and events.  If stat's isn't
 *      configured, return failure.
 */
int XETrapGetStatistics(xXTrapReq *request, ClientPtr client)
{
    int status = Success;
    XETrapEnv *penv = XETenv[client->index];

    if ((BitIsTrue(penv->cur.data_config_flags_data, XETrapStatistics)) &&
        (penv->stats))
    {
        /* Initialize the reply as needed */
        int rep_size = sizeof(xXTrapGetStatsReply);
        penv->stats->detail = XETrap_GetStatistics;
        penv->stats->sequenceNumber = client->sequence;
        if (penv->protocol == 31)
        {
            xXTrapGetStatsReply  rep_stats;
            rep_stats = *penv->stats;
#ifndef VECTORED_EVENTS
            rep_size         = 1060;
#else
            rep_size         = 1544;
#endif
            rep_stats.length = (rep_size - 32L) / SIZEOF(CARD32);
            /* 
             * Now we need to shift the data *into* the header area 
             * for bug compatibility.
             */
            memcpy(&(rep_stats.pad0),&(penv->stats->data), 
                sizeof(XETrapGetStatsRep));
            WriteReplyToClient(client, rep_size, &rep_stats);
        }
        else
        {
            WriteReplyToClient(client, rep_size, penv->stats);
        }
    }
    else
    {
        status = XETrapErrorBase + BadStatistics;
    }
    return(status);
}

/*
 *  DESCRIPTION:
 *
 *      This function is dispatched when a client requests the extension to
 *      be configured in some manner.
 */
int XETrapConfig(xXTrapConfigReq *request, ClientPtr client)
{
    UByteP vflags       = request->config_flags_valid;
    UByteP dflags       = request->config_flags_data;
    UByteP req_flags    = request->config_flags_req;
    UByteP event_flags  = request->config_flags_event;
    XETrapEnv *penv     = XETenv[client->index];
    UByteP bit_flags    = penv->cur.data_config_flags_data;
    int status          = Success;
    CARD32 i            = 0L;

    /* Check events and swap if desired */
    if (BitIsTrue(vflags,XETrapEvent))
    {   /* Loop through all of the events */
        for (i=0L; i<ASIZE(EventProcVector); i++)
        {
            if (BitIsTrue(event_flags,i) &&    /* Do we care about this one? */
                (BitValue(dflags,XETrapEvent) ^           /* Exclusive Or */
                (BitValue(penv->cur.data_config_flags_event,i))))
            {   /* At this point we *know* there's a change.  The
                 * only question remaining is are there any more
                 * clients interested in this specific event.  If
                 * so, *don't* swap this process!
                 */
                if (BitIsTrue(dflags,XETrapEvent))
                {   /* Client wants the XTrap rtn */
                    if (++(vectored_events[i]) <= 1L)
                    {   /* first client, so do it */
                        _SwapProc(&(XETrapEventProcVector[i]), 
                            &(EventProcVector[i]));
                    }
                }
                else
                {   /* Client wants the *real* rtn */
                    if (--(vectored_events[i]) <= 0L)
                    {   /* No more clients using, so do it */
                        _SwapProc(&(XETrapEventProcVector[i]), 
                            &(EventProcVector[i]));
                    }
                }
                switch(i)
                {
                    case KeyPress:  /* needed for command key processing */
                    case KeyRelease:
                        XETrapKbdDev->processInputProc = 
                            (void_function)(EventProcVector[i] ? 
                            (void_function)EventProcVector[i] : 
                            (void_function)keybd_process_inp);
                        XETrapKbdDev->realInputProc = 
                            (void_function)(EventProcVector[i] ?
                            (void_function)EventProcVector[i] : 
                            (void_function)keybd_process_inp);
                        break;
#ifndef VECTORED_EVENTS
                    case ButtonPress: /* hack until events become vectored */
                    case ButtonRelease:
                    case MotionNotify:
                        XETrapPtrDev->processInputProc = 
                            (void_function)EventProcVector[i];
                        XETrapPtrDev->realInputProc = 
                            (void_function)EventProcVector[i];
                        break;
                    default:
                        status = BadImplementation;
                        break;
#endif /* !VECTORED_EVENTS */
                }
                BitToggle(penv->cur.data_config_flags_event,i);
            }
        }
    }
    if ((status == Success) && 
        (_CheckChangeBit(vflags,dflags,bit_flags,XETrapCmd)))
    {
        if (BitIsTrue(dflags, XETrapCmd))
        {   /* Add accelerator entry to cmd_clients list iff necessary */
            penv->cur.data_config_cmd_key = request->config_cmd_key;
            status = add_accelerator_node(penv->client, &cmd_clients);
        }
        else
        {
            penv->cur.data_config_cmd_key = 0L; /* default no KeyCode */
            remove_accelerator_node(penv->client, &cmd_clients);
        }
    }
    if ((status == Success) &&
        (_CheckChangeBit(vflags,dflags,bit_flags,XETrapMaxPacket)))
    {
        if (BitIsTrue(dflags,XETrapMaxPacket))
        {   /* Set size to what's passed in */
            if (request->config_max_pkt_size < XETrapMinPktSize)
            {   /* Tell them the value is too small */
                status = BadValue;
            }
            else
            {
                penv->cur.data_config_max_pkt_size = 
                    request->config_max_pkt_size;
            }
        }
        else
        {   /* Set it to the default (a *very* big number) */
            penv->cur.data_config_max_pkt_size = 0xFFFF;
        }
    }
    /* If the valid flag is set for requests, then each of the 
     * requests is swapped if it's different from current state.
     */
    if (BitIsTrue(vflags,XETrapRequest) && status == Success)
    {   /* Loop through all of the core requests */
        for (i=0L; i<ASIZE(XETrapProcVector); i++)
        {
            if (BitIsTrue(req_flags,i) &&     /* Do we care about this one? */
                (BitValue(dflags,XETrapRequest) ^          /* Exclusive Or */
                (BitValue(penv->cur.data_config_flags_req,i))))
            {   /* At this point we *know* there's a change.  The
                 * only question remaining is are there any more
                 * clients interested in this specific request.  If
                 * so, *don't* swap this process!
                 */
                if (BitIsTrue(dflags,XETrapRequest))
                {   /* Client wants the XTrap rtn */
                    if (++(vectored_requests[i]) <= 1L)
                    {   /* first client, so do it */
                        _SwapProc(&(XETrapProcVector[i]), &(ProcVector[i]));
                    }
                }
                else
                {   /* Client wants the *real* rtn */
                    if (--(vectored_requests[i]) <= 0L)
                    {   /* No more clients using, so do it */
                        _SwapProc(&(XETrapProcVector[i]), &(ProcVector[i]));
                    }
                }
                if (status == Success)
                {
                    BitToggle(penv->cur.data_config_flags_req,i);
                }
            }
        }
    }
    /* Check & Set the boolean flags */
    if (status == Success)
    {
        _CheckChangeBit(vflags,dflags,bit_flags,XETrapCmdKeyMod);
        _CheckChangeBit(vflags,dflags,bit_flags,XETrapTimestamp);
        _CheckChangeBit(vflags,dflags,bit_flags,XETrapWinXY);
/*        _CheckChangeBit(vflags,dflags,bit_flags,XETrapCursor); */
#ifdef COLOR_REPLIES
        _CheckChangeBit(vflags,dflags,bit_flags,XETrapColorReplies);
#endif /* COLOR_REPLIES */
        if (_CheckChangeBit(vflags,dflags,bit_flags,XETrapGrabServer))
        {   /* Let any client uncoditionally set/clear Grabs */
            ignore_grabs = BitValue(dflags, XETrapGrabServer);
        }
    }
    /* The statistics vflag/dflag mechanism is a little different
     * from most.  The dflag is initially set to 0 to indicate no
     * statistics.  When a config request comes in to request
     * statistics, memory's allocated and the dflag is set.
     * Thereafter, whenever a client wants to clear the counters, he
     * simply sets the vflag and clears the dflag.  Multiple requests
     * for statistics configuration are ignored, and the stats memory is
     * free'd only when the client disconnects.
     */
    if (status == Success)
    {
        if (_CheckChangeBit(vflags,dflags,bit_flags,XETrapStatistics))
        {
            if (BitIsTrue(dflags,XETrapStatistics))
            {   /* Do we need to allocate memory? */
                if (penv->stats == NULL && (penv->stats =
                    (xXTrapGetStatsReply *)Xcalloc(sizeof(xXTrapGetStatsReply)))
                    != NULL)
                {   /* Set up the reply header  */
                    penv->stats->type  = X_Reply;
                    penv->stats->length = XEXTRA(xXTrapGetStatsReply);
                    /* add accelerator node for stats clients list */
                    status = add_accelerator_node(penv->client, &stats_clients);
                }
                else if (penv->stats == NULL)
                {   /* No Memory! */
                    status = BadAlloc;
                }
            }
            else
            {   /* Zero out counters */
                (void)memset(penv->stats->data.requests, 0L, 
                    sizeof(penv->stats->data.requests));
                (void)memset(penv->stats->data.events, 0L,
                    sizeof(penv->stats->data.events));
                /* Re-cock the Stat's flag so that it'll
                 * sense a change for next zero'ing out
                 * of the counters.
                 */
                BitTrue(penv->cur.data_config_flags_data, XETrapStatistics);
            }
        }
    }    
    return(status);
}

/*
 *  DESCRIPTION:
 *
 *      This function sets the XETrapTrapActive bit to indicate that Trapping
 *      of requests and/or core events to the client may take place.
 *
 */
int XETrapStartTrap(xXTrapReq *request, ClientPtr client)
{
    XETrapEnv *penv = XETenv[client->index];
    int status = add_accelerator_node(penv->client, &io_clients);
    if (status == Success)
    {
        BitTrue(penv->cur.data_state_flags, XETrapTrapActive);
    }
    return(status);
}
/*
 *  DESCRIPTION:
 *
 *      This function clears the XETrapTrapActive bit to indicate that Trapping
 *      of requests and/or core events to the client may *not* take place.
 *
 */
int XETrapStopTrap(xXTrapReq *request, ClientPtr client)
{
    XETrapEnv *penv = XETenv[client->index];

    remove_accelerator_node(penv->client, &io_clients);
    BitFalse(penv->cur.data_state_flags, XETrapTrapActive);
    return(Success);
}

/*
 *  DESCRIPTION:
 *
 *      This function sends a reply back to the requesting client indicating
 *      the specific XTrap version of this extension.
 */
int XETrapGetVersion(xXTrapGetReq *request, ClientPtr client)
{
    xXTrapGetVersReply ver_rep;
    XETrapEnv *penv = XETenv[client->index];

    update_protocol(request,client);    /* to agree on protocol version */
    /* Initialize the reply as needed */
    ver_rep.hdr.type = X_Reply;
    ver_rep.hdr.detail = XETrap_GetVersion;
    ver_rep.hdr.sequenceNumber = client->sequence;
    ver_rep.hdr.length = XEXTRA(xXTrapGetVersReply);
    ver_rep.data.xtrap_release = XETrap_avail.data.xtrap_release;
    ver_rep.data.xtrap_version = XETrap_avail.data.xtrap_version;
    ver_rep.data.xtrap_revision = XETrap_avail.data.xtrap_revision;
    ver_rep.data.xtrap_protocol = penv->protocol; /* return agreed protocol */
    WriteReplyToClient(client, sizeof(xXTrapGetVersReply), &ver_rep);
    return(Success);
}

/*
 *  DESCRIPTION:
 *
 *      This function sends a reply back to the requesting client indicating
 *      the specific XTrap version of this extension.
 */
int XETrapGetLastInpTime(xXTrapReq *request, ClientPtr client)
{
    xXTrapGetLITimReply tim_rep;
    XETrapEnv *penv = XETenv[client->index];

    /* Initialize the reply as needed */
    tim_rep.hdr.type = X_Reply;
    tim_rep.hdr.detail = XETrap_GetLastInpTime;
    tim_rep.hdr.sequenceNumber = client->sequence;
    tim_rep.hdr.length = XEXTRA(xXTrapGetLITimReply);
    tim_rep.data_last_time = penv->last_input_time;
    WriteReplyToClient(client, sizeof(xXTrapGetLITimReply), &tim_rep);
    return(Success);
}

/*
 *  DESCRIPTION:
 *
 *  This routine is swapped in for the server's output request vectors.   
 *  After writing the request to one (or more) XTrap client(s), this
 *  routine ALWAYS returns by calling the REAL output request vector rtn.
 * 
 *  Note: Swapped Requests are handled automatically since the unswapped
 *        vectored routine is called after the request has been swapped.
 *        IOW, all requests are directed through ProcVector eventually and are
 *        "unswapped" at that point.  It is necessary to swap the data
 *        back if writing to a swapped client, however, and this is done
 *        by calling the appropriate XETSwProcVector[] routine.
 */
int XETrapRequestVector(ClientPtr client)
{
    int status = True;
    XETrapDatum *pdata, *spdata = NULL;
    REQUEST(xResourceReq);
    WindowPtr window_ptr;
    XETrapEnv *penv;
    BYTE *tptr;
    ClientList *ioc = &io_clients;
    ClientList *stc = &stats_clients;
    INT32 asize = sizeof(pdata->hdr) + stuff->length * sizeof(CARD32);
    INT32 size = MAX(asize,XETrapMinPktSize); /* Must be at least */
    INT32 csize;    /* size of request to send to the XTrap client */

    /* Get memory for the data to be sent */
    if ((pdata = (XETrapDatum *)Xcalloc(size)) == NULL)
    {   /* Can't do anything accept set a flag since we don't
         * know who to send the error to yet.
         */
        status = False;
    }

    while (ioc->next != NULL)
    {
        ioc = ioc->next;
        penv = XETenv[ioc->client->index];
        if (status == False)
        {   /* We didn't get the memory! Complain */
            SendErrorToClient(penv->client,XETrap_avail.data.major_opcode,
                stuff->reqType, 0L, BadAlloc);
            break;
        }
        if (BitIsTrue(penv->cur.data_config_flags_req,stuff->reqType))
        {   /* This particular client is interested in *this* request */
            pdata->hdr.client = client->index;  /* stuff client index in hdr */
            if (BitIsTrue(penv->cur.data_config_flags_data,XETrapWinXY))
            {
                window_ptr = (WindowPtr) LookupDrawable(stuff->id, client);
                if (window_ptr == 0L)
                {   /* Failed...invalidate the X and Y coordinate data. */
                    pdata->hdr.win_x = -1L;
                    pdata->hdr.win_y = -1L;
                }
                else
                {
                    pdata->hdr.screen = window_ptr->drawable.pScreen->myNum;
                    pdata->hdr.win_x = window_ptr->drawable.x;
                    pdata->hdr.win_y = window_ptr->drawable.y;
                }
            }
            if (BitIsTrue(penv->cur.data_config_flags_data,XETrapTimestamp))
            {
                pdata->hdr.timestamp = GetTimeInMillis();
            }
            /* Copy the information to a location we can write it from */
            (void) memcpy(&(pdata->u.req),stuff,stuff->length*sizeof(CARD32));
            pdata->hdr.count = MIN(penv->cur.data_config_max_pkt_size,asize);
            XETrapSetHeaderRequest(&(pdata->hdr));
    
            /* Perform any needed byte/word swapping. NOTE: This is not
             * the "normal" technique that should be used to perform the
             * swapping. The reason that we do it here is to be sure to
             * do it only once in a controlled manner, which we can not
             * guarentee in the case of the Xlib transport. Notice that
             * we don't swap the XTRAP EVENT information.  This is done
             * in the XETrapWriteXLib() routine.
             */

            if (penv->client->swapped)
            {   /* need to deal with swapped clients */
                if (spdata == NULL)
                {   /* Get memory for the swapped data to be sent */
                    if ((spdata = (XETrapDatum *)Xcalloc(size)) == NULL)
                    {
                        SendErrorToClient(penv->client,
                            XETrap_avail.data.major_opcode,
                            stuff->reqType, 0L, BadAlloc);
                        break;
                    }

                    memcpy(spdata,pdata,size);  /* fill in the info */
                    /* Now call the request-specific rtn to swap the request */
                    if (stuff->reqType < 128)
                    {   /* a core request, good */
                        (*XETSwProcVector[stuff->reqType])(&(spdata->u.req),
			    penv->client);	/* RTC X11R6 */
                    }
                    else if (penv->cur.data_config_max_pkt_size == 
                        XETrapMinPktSize)
                    {   /* Minimum size, so swap it as an ResourceReq */
                        XETSwResourceReq(&(spdata->u.req));
                    }
                    else
                    {   /* trying to swap an extension request! */
                        SendErrorToClient(penv->client,
                            XETrap_avail.data.major_opcode,
                            stuff->reqType, 0L, XETrapErrorBase + BadSwapReq);
                    }
                }
                /* need to stow in the latest header (count) */
                memcpy(spdata,pdata,SIZEOF(XETrapHeader));
                sXETrapHeader(&(spdata->hdr));  /* swap the XTrap Header */
            }
            /* Write as many bytes of information as the client wants */
            tptr = (BYTE *)(penv->client->swapped ? spdata : pdata);
            csize = MAX(pdata->hdr.count, XETrapMinPktSize);
            if (XETrapWriteXLib(penv, tptr, csize) != csize)
            {
                SendErrorToClient(penv->client,XETrap_avail.data.major_opcode,
                    stuff->reqType, 0L, XETrapErrorBase + BadIO);
            }
#ifdef COLOR_REPLIES
            /* Process Color Replies, if desired, and applicable */
            if (BitIsTrue(penv->cur.data_config_flags_data,XETrapColorReplies))
            {    /* wants color replies */
                switch(stuff->reqType)
                {
                    case X_AllocColor:
                        GetSendColorRep(client, stuff);
                        break;
                    case X_AllocNamedColor:
                        GetSendNamedColorRep(client, stuff);
                        break;
                    case X_AllocColorCells:
                        GetSendColorCellsRep(client, stuff);
                        break;
                    case X_AllocColorPlanes:
                        GetSendColorPlanesRep(client, stuff);
                        break;
                    default:
                        break;
                }
            }
#endif /* COLOR_REPLIES */
        }
    }
    while (stc->next != NULL)
    {   /* increment appropriate stats bucket for each interested client */
        stc = stc->next;
        penv = XETenv[stc->client->index];
        if (BitIsTrue(penv->cur.data_config_flags_req,stuff->reqType))
        {   /* This particular client would like this particular stat */
            penv->stats->data.requests[stuff->reqType]++;
        }
    }

    if (pdata)
    {
        Xfree(pdata);
    }
    if (spdata)
    {
        Xfree(spdata);
    }
    if (ignore_grabs == True &&
        (stuff->reqType == X_GrabServer || stuff->reqType == X_UngrabServer))
    {    /* doesn't want Grab's! Note: this is a "last configured" setting */
#ifndef NO_NEW_XTRAP
	int status;

	if (stuff->reqType == X_GrabServer)
	{
	    ClientList *pclient;

	    /* first call grab server procedure */
	    status = (*XETrapProcVector[stuff->reqType])(client);

	    /* then add XTrap controlling clients */
	    for (pclient = &io_clients; pclient; pclient = pclient->next)
		if (pclient->client)
		    MakeClientGrabImpervious(pclient->client);
	}
	else
	{
	    ClientList *pclient;

	    /* first drop XTrap controlling clients */
	    for (pclient = &io_clients; pclient; pclient = pclient->next)
		if (pclient->client)
		    MakeClientGrabPervious(pclient->client);

	    /* then call ungrab server procedure */
	    status = (*XETrapProcVector[stuff->reqType])(client);
	}
	return status;
#else /* NO_NEW_XTRAP */
        return(Success);
#endif /* NO_NEW_XTRAP */
    }
    else
    {
        return((*XETrapProcVector[stuff->reqType])(client));
    }
}
/*
 *
 *  DESCRIPTION:
 *
 *      This routine intercepts input xEvents from the keyboard.
 *      if XETrapTrapActive, will write record to client(s)
 *      and then pass the event to the server iff not command
 *      key and gate is open.  If it's a command key, then twiddle
 *      the gate state as required (optional, see below).
 *
 *      This routine implements an optional user specified command key
 *      that can be used to close the input pipe into the server
 *      while a client command is generated.  The keypress of the
 *      command key places this routine in command mode, the keyrelease
 *      exits command mode.  
 *
 *      A keypress of the command key followed by the
 *      optionally specified lock key will place this routine in continuous
 *      command mode until the command key and lock key are pressed again
 *      to exit command mode.  In the locked state, the client interprets
 *      keystrokes as it wishes, as commands or as input to a prior command.
 *
 *      Both mechanisms can be used alternately.
 *
 *  IMPLICIT INPUTS :
 *
 *      penv->cur.data_config_cmd_key :
 *                    This is the keycode of the key that is used to stop
 *                    and restart the transmission of intercepted input 
 *                    events to the server.  If specified, the gate_state
 *                    flag will be set or cleared depending on the state of
 *                    the command_key.
 *
 *      penv->cur.data_config_flags_data.XETrapCmdKeyMod:
 *                    This is the value of the mode in which the command_key
 *                    will operate.  It currently has two values: MODIFIER and
 *                    COMMAND_LOCK.  MODIFIER mode clears gate_state on
 *                    keypress, and sets gate_state on keyrelease.
 *                    COMMAND_LOCK mode toggles gate_state on
 *                    or off.
 *
 *      gate_closed:
 *                    A flag that is set/cleared in the xtrap_keyboard
 *                    routine that indicates whether intercepted input
 *                    should be passed to the server at any particular
 *                    instance.
 *
 *
 *      next_key:
 *                    This variable tracks the state of the next key to be
 *                    pressed or released.  It allows the checking of double
 *                    presses of the command key to be sent to the server and
 *                    keeps good state order when the command key is used.
 *
 *      key_ignore:
 *                   This variable indicates whether or not the specific
 *                   key should be ignored for subsequent server processing.
 *
 */
int XETrapKeyboard(xEvent *x_event, DevicePtr keybd, int count)
{                     
    register BYTE  type   = x_event->u.u.type;
    register BYTE  detail = x_event->u.u.detail;
    XETrapEnv *penv;
    ClientList *stc = &stats_clients;
    ClientList *cmc = &cmd_clients;
    int_function cur_func = XETrapKeyboard;

#ifdef VERBOSE
    if (count != 1L)
    {   /* We haven't coded for this situation yet! */
        ErrorF("Warning! Event count != 1 (%d)\n", count);
    }
#endif
    while (stc->next != NULL)
    {   /* increment appropriate stats bucket for each interested client */
        stc = stc->next;
        penv = XETenv[stc->client->index];
        if (BitIsTrue(penv->cur.data_config_flags_event,type))
        {   /* This particular client would like this particular stat */
            penv->stats->data.events[type]++;
        }
    }
#ifndef VECTORED_EVENTS
    /* We *only* StampAndMail command keys with vectored events since
     * we get much more data by waiting till we get called in XETrapEventVector
     */
    XETrapStampAndMail(x_event);  /* send to XTrap client if necessry */
#endif
    while (cmc->next != NULL)
    {
        cmc = cmc->next;
        penv = XETenv[cmc->client->index];
        key_ignore = False;
        if (detail == penv->cur.data_config_cmd_key)
        {
            if (BitIsTrue(penv->cur.data_config_flags_data, XETrapCmdKeyMod))
            {
                switch (type) 
                {
                    case KeyPress:
                        if (next_key == XEKeyIsEcho)
                        {
                            break;
                        }
                        gate_closed = True;
                        next_key = XEKeyIsClear;
                        break;
    
                    case KeyRelease:
                        if (next_key == XEKeyIsEcho)
                        {
                            next_key = XEKeyIsClear;
                            break;
                        }
                        if (next_key == XEKeyIsClear)
                        {
                            next_key = XEKeyIsEcho;
                        }
                        else
                        {   /* it's Other, so Clear it */
                            next_key = XEKeyIsClear;
                        }
                        gate_closed = False;
                        key_ignore = True;
                        break;
    
                    default: break;
                }
            }
            else
            {
                switch (type)
                {
                    case KeyPress:
                        if (next_key == XEKeyIsEcho)
                        {
                            gate_closed = False;
                            break;
                        }
                        /* Open gate on cmd key release */
                        if ((next_key == XEKeyIsOther) && 
                            gate_closed == True)
                        {
                            break;
                        }
                        gate_closed = True;
                        next_key = XEKeyIsClear;
                        break;
    
                    case KeyRelease:
                        if (next_key == XEKeyIsClear)
                        {
                            next_key = XEKeyIsEcho;
                            break;
                        }
    
                        if (next_key == XEKeyIsEcho)
                        {
                            next_key = XEKeyIsClear;
                            break;
                        }
    
                        gate_closed = False;
                        key_ignore = True;
                        next_key = XEKeyIsClear;
                        break;
    
                    default: 
                        break;
                }
            }
        }
        else
        {
            next_key = XEKeyIsOther;
        }
    }            

    /*
     *  If the gate to the server is open, 
     *  and we are not ignoring a keyrelease,
     *  pass the event to the server for normal processing.
     */
#ifndef VECTORED_EVENTS
    if ((gate_closed == False) && (key_ignore == False))
    {
        if (XETrapEventProcVector[type] != cur_func)
        {   /* to protect us from infinite loops */
            (void)(*XETrapEventProcVector[type])(x_event,keybd,count);
        }
        else
        {
            (void)(*EventProcVector[type])(x_event,keybd,count);
        }
    }
#else  /* VECTORED_EVENTS */
    if ((gate_closed == False) && (key_ignore == False))
    {   /* send event on to server to be trapped again in XETrapEventVector */
        (void)(*keybd_process_inp)(x_event,keybd,count);
    }
    else
    {
        XETrapStampAndMail(x_event);  /* send to XTrap client if necessry */
    }
#endif
    key_ignore = False; /* reset for next time around */
    return 0;
}

/*
 *  DESCRIPTION:
 *
 *      This routine intercepts input xEvents from the pointer device
 *      and passes the input event back to the server for normal processing.
 *
 *      This routine is sensitive to whether input is being passed
 *      up to the server or not.  This state is set by the keyboard
 *      input routine.
 *
 *
 */
#ifndef VECTORED_EVENTS
int XETrapPointer(xEvent *x_event, DevicePtr ptrdev, int count)
{
    XETrapEnv *penv;
    ClientList *stc = &stats_clients;
    int_function cur_func = XETrapPointer;

#ifdef VERBOSE
    if (count != 1L)
    {   /* We haven't coded for this situation yet! */
        ErrorF("Warning! Event count != 1 (%d)\n", count);
    }
#endif
    while (stc->next != NULL)
    {   /* increment appropriate stats bucket for each interested client */
        stc = stc->next;
        penv = XETenv[stc->client->index];
        if (BitIsTrue(penv->cur.data_config_flags_event,x_event->u.u.type))
        {   /* This particular client would like this particular stat */
            penv->stats->data.events[x_event->u.u.type]++;
        }
    }
    XETrapStampAndMail(x_event);  /* send to XTrap client if necessry */
    /*
     *  If the gate to the server is open,
     *  pass the event up like nothing has happened.
     */
    if (gate_closed == False)
    {
        if (XETrapEventProcVector[x_event->u.u.type] != cur_func)
        {   /* to protect us from infinite loops */
            (void)(*XETrapEventProcVector[x_event->u.u.type])(x_event,ptrdev,
                count);
        }
        else
        {
            (void)(*EventProcVector[x_event->u.u.type])(x_event,ptrdev,count);
        }
    }
    return 0;
}
#endif /* !VECTORED_EVENTS */


/*
 *  DESCRIPTION:
 *
 *      This routine determines whether it needs to send event data
 *      to the XTrap Client(s).  If so, it timestamps it appropriately
 *      and writes out both the header and detail information.
 *
 */
void XETrapStampAndMail(xEvent *x_event)
{
    XETrapDatum data;
    register CARD32 size;
    XETrapEnv *penv;
    ClientList *ioc = &io_clients;

    /* Currently, we're intercepting core events *before* most
     * of the event information's filled in.  Specifically, the
     * only fields that are valid at this level are: type, detail,
     * time, rootX, rootY, and state.
     */
    /* Loop through all clients wishing I/O */
    while (ioc->next != NULL)
    {
        ioc = ioc->next;
        penv = XETenv[ioc->client->index];
        /* Do we have a valid fd? Do we care about this event? */
        if (BitIsTrue(penv->cur.data_config_flags_event, x_event->u.u.type))
        {
            XETrapSetHeaderEvent(&(data.hdr));
            data.hdr.win_x = data.hdr.win_y = -1L; /* Invalidate req draw */
            data.hdr.screen = 0L;   /* not till Events are vectored! */
            data.hdr.client = 0L;   /* not till Events are vectored! */
            if (BitIsTrue(penv->cur.data_config_flags_data,
                XETrapTimestamp))
            {
                data.hdr.timestamp = GetTimeInMillis();
            }
            size = data.hdr.count = XETrapMinPktSize; /* Always for evts */
            penv->last_input_time = x_event->u.keyButtonPointer.time;
            /* Copy the event information into our local memory */
            (void)memcpy(&(data.u.event),x_event,sizeof(xEvent));

#ifdef PANORAMIX
	    if (!noPanoramiXExtension &&
                (data.u.event.u.u.type == MotionNotify ||
                data.u.event.u.u.type == ButtonPress ||
                data.u.event.u.u.type == ButtonRelease ||
                data.u.event.u.u.type == KeyPress ||
                data.u.event.u.u.type == KeyRelease)) {
		    int scr = XineramaGetCursorScreen();
		    data.u.event.u.keyButtonPointer.rootX +=
			panoramiXdataPtr[scr].x - panoramiXdataPtr[0].x;
		    data.u.event.u.keyButtonPointer.rootY +=
			panoramiXdataPtr[scr].y - panoramiXdataPtr[0].y;
	    }
#endif

            if (penv->client->swapped)
            {   /* 
                 * Notice that we don't swap the XTRAP EVENT information.  
                 * This is done in the XETrapWriteXLib() routine.
                 */
                xEvent ToEvent;
                (*EventSwapVector[data.u.event.u.u.type & 0177])
                    (&data.u.event,&ToEvent);
                (void)memcpy(&(data.u.event),&ToEvent,sizeof(ToEvent));
                sXETrapHeader(&(data.hdr));  /* swap the XTrap Header */
            }
            /* From this point on, the contents of data is swapped and
             * therefore we should not refer to it for information.
             */
            if (XETrapWriteXLib(penv, (BYTE *)&data, size) != size)
            {
                SendErrorToClient(penv->client,
                    XETrap_avail.data.major_opcode,
                    x_event->u.u.type, 0L, XETrapErrorBase + BadIO);
            }
        }
    }
    return;
}
#ifdef VECTORED_EVENTS
int XETrapEventVector(ClientPtr client, xEvent *x_event)
{
    XETrapDatum data;
    register CARD32 size;
    XETrapEnv *penv;
    ClientList *ioc = &io_clients;

    /* Loop through all clients wishing I/O */
    while (ioc->next != NULL)
    {
        ioc = ioc->next;
        penv = XETenv[ioc->client->index];
        /* Do we care about this event? */
        if (BitIsTrue(penv->cur.data_config_flags_event, x_event->u.u.type))
        {
            XETrapSetHeaderEvent(&(data.hdr));
            data.hdr.client = client->index;
            data.hdr.win_x = data.hdr.win_y = -1L; /* Invalidate req draw */
            if ((current_screen < 0L) || ((x_event->u.u.type >= KeyPress) && 
                (x_event->u.u.type <= MotionNotify) && 
                (!x_event->u.keyButtonPointer.sameScreen)))
            {   /* we've moved/warped to another screen */
                WindowPtr root_win = GetCurrentRootWindow();
                current_screen = root_win->drawable.pScreen->myNum;
            }
            data.hdr.screen = current_screen;
            if (BitIsTrue(penv->cur.data_config_flags_data,
                XETrapTimestamp))
            {
                data.hdr.timestamp = GetTimeInMillis();
            }
            size = data.hdr.count = XETrapMinPktSize; /* Always for evts */
            penv->last_input_time = x_event->u.keyButtonPointer.time;
            /* Copy the event information into our local memory */
            (void)memcpy(&(data.u.event),x_event,sizeof(xEvent));
    
            if (penv->client->swapped)
            {
                xEvent ToEvent;
                (*EventSwapVector[data.u.event.u.u.type & 0177])
                    (&data.u.event,&ToEvent);
                (void)memcpy(&(data.u.event),&ToEvent,sizeof(ToEvent));
                sXETrapHeader(&(data.hdr));  /* swap the XTrap Header */
            }
            /* From this point on, the contents of pdata is swapped and
             * therefore we should not refer to it for information.
             */
            if (XETrapWriteXLib(penv, (BYTE *)&data, size) != size)
            {
                SendErrorToClient(penv->client,
                    XETrap_avail.data.major_opcode,
                    x_event->u.u.type, 0L, XETrapErrorBase + BadIO);
            }
        }
    }
    return;
}
#endif /* VECTORED_EVENTS */
void sReplyXTrapDispatch(ClientPtr client, int size, char *reply)
{
    register XETrapRepHdr *rep = (XETrapRepHdr *)reply;

    switch(rep->detail)
    {   
        case XETrap_GetAvailable:
            {   
                xXTrapGetAvailReply lrep;
                (void)memcpy((char *)&lrep,reply,sizeof(lrep));
                sReplyXETrapGetAvail(client,size,(char *)&lrep);
            }
            break;
        case XETrap_GetCurrent:
            {   
                xXTrapGetCurReply lrep;
                (void)memcpy((char *)&lrep,reply,sizeof(lrep));
                sReplyXETrapGetCur(client,size,(char *)&lrep);
            }
            break;
        case XETrap_GetStatistics:
            {   
                xXTrapGetStatsReply lrep;
                (void)memcpy((char *)&lrep,reply,sizeof(lrep));
                sReplyXETrapGetStats(client,size,(char *)&lrep);
            }
            break;
        case XETrap_GetVersion:
            {   
                xXTrapGetVersReply lrep;
                (void)memcpy((char *)&lrep,reply,sizeof(lrep));
                sReplyXETrapGetVers(client,size,(char *)&lrep);
            }
            break;
        case XETrap_GetLastInpTime:
            {   
                xXTrapGetLITimReply lrep;
                (void)memcpy((char *)&lrep,reply,sizeof(lrep));
                sReplyXETrapGetLITim(client,size,(char *)&lrep);
            }
            break;
        default:
            SendErrorToClient(client,XETrap_avail.data.major_opcode,
                rep->detail, 0L, BadImplementation);
            break;
    }
    return;
}

/* 
 * XLib communications routines 
 */

/*
 *  DESCRIPTION:
 *
 *      This function performs the transport specific functions required
 *      for writing data back to an XTrap client over XLib.  The trick is
 *      packaging the data into <=32 byte packets to conform to the sizeof
 *      an X Event.  nbytes must be at least equal to XETrapMinPktSize
 *
 */
int XETrapWriteXLib(XETrapEnv *penv, BYTE *data, CARD32 nbytes)
{
    CARD32 size, total = 0L;
    xETrapDataEvent event;

    /* Initialize the detail field to show the beginning of a datum */
    event.detail = XETrapDataStart;
    event.idx = 0L;

    /* This loop could be optimized by not calling Write until after all
     * of the events are packaged. However, this would require memory
     * games, and may not therefore be a win.
     */
    while (nbytes > 0L)
    {   /* How many bytes can we send in this packet */
        size = (nbytes > sz_EventData) ? sz_EventData : nbytes;

        /* Initialize the event */
        event.type = XETrapData + XETrap_avail.data.event_base;
        event.sequenceNumber = penv->client->sequence;

        /* Copy the data we are sending */
        (void)memcpy(event.data,data,size);
        if (size < sz_EventData)
            (void)memset(event.data+size,0L,sz_EventData-size);
        data += size;
        nbytes -= size;
        total += size;

        /* Set the detail field to show the continuation of datum */
        if (total != size)
        {   /* this is not the first one */
            event.detail = (nbytes > 0) ? XETrapDataContinued : XETrapDataLast;
        }

        /* Send this part to the client */
        WriteEventsToClient(penv->client, 1L, (xEvent *) &event);
        event.idx++;      /* Bump the index for the next event */
    }
    return(total);
}

/*----------------------------*
 *  Static Functions
 *----------------------------*/

static void update_protocol(xXTrapGetReq *reqptr, ClientPtr client)
{
    XETrapEnv *penv = XETenv[client->index];
    /* update protocol number */
    switch (reqptr->protocol)
    {
        /* known acceptable protocols */
        case 31:
        case XETrapProtocol:
            penv->protocol = reqptr->protocol;
            break;
        /* all else */
        default:    /* stay backwards compatible */
            penv->protocol = 31;
            break;
    }
}

/* Swap 2 functions. This is a function instead of a macro to help to keep
 * lint from complaining about mixed types. It seems to work, but I would
 * probably classify this as a hack.
 */
static void _SwapProc( register int (**f1)(), register int (**f2)())
{
    register int (*t1)() = *f1;
    *f1 = *f2;
    *f2 = t1;

    return;
}

/*
 *  DESCRIPTION:
 *
 *      This function swaps the byte order of fields within
 *      the XTrap Event Header.  It assumes the data will be
 *	swapped by code in XETrapRequestVector().
 *
 */
static void sXETrapEvent(xETrapDataEvent *from, xETrapDataEvent *to)
{
    to->type = from->type;
    to->detail = from->detail;
    cpswaps(from->sequenceNumber,to->sequenceNumber);
    cpswapl(from->idx,to->idx);
    /* Assumes that the data's already been swapped by XETrapRequestVector */
    memcpy(to->data, from->data, SIZEOF(EventData));
}

/*
 *  DESCRIPTION:
 *
 *      This function adds a node from an accelerator linked-list
 *      (either io_clients, stats_clients, or cmd_clients).
 *
 */
static int add_accelerator_node(ClientPtr client, ClientList *accel)
{
    Bool found = False;
    int status = Success;

    while (accel->next != NULL)
    {
        if (accel->client == client)
        {
            found = True;   /* Client's already known */
            break;
        }
        else
        {
            accel = accel->next;
        }
    }
    if (found == False)
    {
        if ((accel->next = (ClientList *)Xcalloc(sizeof(ClientList))) == NULL)
        {
            status = BadAlloc;
        }
        else
        {   /* fill in the node */
            accel = accel->next;
            accel->next   = NULL;
            accel->client = client;
        }
    }
    return(status);
}
/*
 *  DESCRIPTION:
 *
 *      This function removes a node from an accelerator linked-list
 *      (either io_clients, stats_clients, or cmd_clients).
 *
 */
static void remove_accelerator_node(ClientPtr client, ClientList *accel)
{
    while (accel->next != NULL)
    {
        if (accel->next->client == client)
        {
            ClientList *tmp = accel->next->next;
            Xfree(accel->next);
            accel->next = tmp;
            break;
        }
        else
        {
            accel = accel->next;
        }
    }

    return;
}

#ifdef COLOR_REPLIES
static void GetSendColorRep(ClientPtr client, xResourceReq *req)
{   /* adapted from ProcAllocColor() in dispatch.c */
    XETrapDatum data;
    int retval;
    XETrapEnv *penv = XETenv[client->index];
    xAllocColorReply *crep = (xAllocColorReply *)&(data.u.reply);
    xAllocColorReq   *creq = (xAllocColorReq *)req;
    ColormapPtr pmap = (ColormapPtr )LookupIDByType(creq->cmap, RT_COLORMAP);

    /* Fill in the header fields */
    data.hdr.count = XETrapMinPktSize; /* The color replies are 32 bytes */
    XETrapSetHeaderReply(&(data.hdr));
    /* Hack alert:
     * We need to pass the "reply" type in the header since replies don't
     * contain the id's themselves.  However, we're not changing the
     * protocol to support this until we decide exactly how we want to
     * do *all* replies (e.g. not just ColorReplies).  So until then, stow
     * the reply id in the screen field which wouldn't normally be used in
     * this context.
     */
    data.hdr.screen = req->reqType;
    if (!pmap)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, BadColor);
        return;
    }
    crep->red   = creq->red;
    crep->green = creq->green;
    crep->blue  = creq->blue;
    crep->pixel = 0;
    if ((retval = AllocColor(pmap, &(crep->red), &(crep->green),
        &(crep->blue), &(crep->pixel), client->index)) != Success)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, retval);
        return;
    }
    /* Swap data if necessary */
    if (client->swapped)
    {
        INT32 n;
        swaps(&(crep->red), n);
        swaps(&(crep->green), n);
        swaps(&(crep->blue), n);
        swapl(&(crep->pixel), n);
    }
    /* Send data to client */
    if (XETrapWriteXLib(penv, (BYTE *)&data, XETrapMinPktSize) 
        != XETrapMinPktSize)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, XETrapErrorBase + BadIO);
    }
}

static void GetSendNamedColorRep(ClientPtr client, xResourceReq *req)
{   /* adapted from ProcAllocNamedColor() in dispatch.c */
    XETrapDatum data;
    XETrapEnv *penv = XETenv[client->index];
    int retval;
    xAllocNamedColorReply *nrep = (xAllocNamedColorReply *)&(data.u.reply);
    xAllocNamedColorReq   *nreq = (xAllocNamedColorReq *)req;
    ColormapPtr pcmp = (ColormapPtr )LookupIDByType(nreq->cmap, RT_COLORMAP);

    data.hdr.count = XETrapMinPktSize; /* The color replies are 32 bytes */
    XETrapSetHeaderReply(&(data.hdr));
    /* Hack alert:
     * We need to pass the "reply" type in the header since replies don't
     * contain the id's themselves.  However, we're not changing the
     * protocol to support this until we decide exactly how we want to
     * do *all* replies (e.g. not just ColorReplies).  So until then, stow
     * the reply id in the screen field which wouldn't normally be used in
     * this context.
     */
    data.hdr.screen = req->reqType;
    if (!pcmp)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, BadColor);
        return;
    }
    if (!OsLookupColor(pcmp->pScreen->myNum, (char *)&nreq[1], 
        nreq->nbytes, &(nrep->exactRed), &(nrep->exactGreen), 
        &(nrep->exactBlue)))
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, BadName);
        return;
    }
    nrep->screenRed     = nrep->exactRed;
    nrep->screenGreen   = nrep->exactGreen;
    nrep->screenBlue    = nrep->exactBlue;
    nrep->pixel         = 0;
    if ((retval = AllocColor(pcmp, &(nrep->screenRed), 
        &(nrep->screenGreen), &(nrep->screenBlue), &(nrep->pixel), 
        client->index)) != Success)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, retval);
        return;
    }
    /* Swap data if necessary */
    if (client->swapped)
    {
        INT32 n;
        swapl(&(nrep->pixel), n);
        swaps(&(nrep->exactRed), n);
        swaps(&(nrep->exactGreen), n);
        swaps(&(nrep->exactBlue), n);
        swaps(&(nrep->screenRed), n);
        swaps(&(nrep->screenGreen), n);
        swaps(&(nrep->screenBlue), n);
    }

    /* Send data to client */
    if (XETrapWriteXLib(penv, (BYTE *)&data, XETrapMinPktSize) 
        != XETrapMinPktSize)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, XETrapErrorBase + BadIO);
    }
}

static void GetSendColorCellsRep(ClientPtr client, xResourceReq *req)
{   /* adapted from ProcAllocColorCells() in dispatch.c */
    int                   retval;
    int                   npixels, nmasks;
    unsigned long         *ppixels, *pmasks;
    long                  length;
    XETrapDatum           *data;
    XETrapEnv             *penv = XETenv[client->index];
    xAllocColorCellsReply *crep;
    xAllocColorCellsReq   *creq = (xAllocColorCellsReq *)req;
    ColormapPtr pmap = (ColormapPtr )LookupIDByType(creq->cmap, RT_COLORMAP);

    if (!pmap)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, BadColor);
        return;
    }
    npixels = creq->colors;
    if (!npixels)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, BadValue);
        return;
    }
    nmasks = creq->planes;
    length = ((long)npixels + (long)nmasks) * sizeof(Pixel);
    data = (XETrapDatum *)ALLOCATE_LOCAL(sizeof(XETrapDatum)+length);
    if (!data)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, BadAlloc);
        return;
    }
    data->hdr.count = MIN(penv->cur.data_config_max_pkt_size,
        sizeof(XETrapDatum)+length);
    XETrapSetHeaderReply(&(data->hdr));
    data->hdr.screen = req->reqType;    /* hack! but necessary */
    ppixels = (unsigned long *)((char *)data + sizeof(XETrapDatum));
    pmasks = ppixels + npixels;
    if ((retval = AllocColorCells(client->index, pmap, npixels, 
        nmasks, (Bool)creq->contiguous, ppixels, pmasks)) != Success)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, retval);
        DEALLOCATE_LOCAL(data);
        return;
    }
    crep = (xAllocColorCellsReply *)&(data->u.reply);
    crep->nPixels = npixels;
    crep->nMasks  = nmasks;
    /* Swap data if necessary */
    if (client->swapped)
    {
        INT32 n, i, *ptr;
        ptr=(INT32 *)ppixels;
        swaps(&(crep->nPixels), n);
        swaps(&(crep->nMasks), n);
        for (i=0; i<length; i++)
        {
            swapl(&(ptr[i]), n);
        }
    }
    /* Send data to client */
    if (XETrapWriteXLib(penv, (BYTE *)&data, data->hdr.count) 
        != data->hdr.count)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, XETrapErrorBase + BadIO);
    }
    DEALLOCATE_LOCAL(data);
}
static void GetSendColorPlanesRep(ClientPtr client, xResourceReq *req)
{   /* adapted from ProcAllocColorPlanes() in dispatch.c */
    int                   retval;
    int                   npixels, nmasks;
    unsigned long         *ppixels, *pmasks;
    long                  length;
    XETrapDatum           *data;
    XETrapEnv             *penv = XETenv[client->index];
    xAllocColorPlanesReply *crep;
    xAllocColorPlanesReq   *creq = (xAllocColorPlanesReq *)req;
    ColormapPtr pmap = (ColormapPtr )LookupIDByType(creq->cmap, RT_COLORMAP);

    if (!pmap)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, BadColor);
        return;
    }
    npixels = creq->colors;
    if (!npixels)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, BadValue);
        return;
    }
    length = (long)npixels * sizeof(Pixel);
    data = (XETrapDatum *)ALLOCATE_LOCAL(sizeof(XETrapDatum)+length);
    if (!data)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, BadAlloc);
        return;
    }
    data->hdr.count = MIN(penv->cur.data_config_max_pkt_size,
        sizeof(XETrapDatum)+length);
    XETrapSetHeaderReply(&(data->hdr));
    data->hdr.screen = req->reqType;    /* hack! but necessary */
    ppixels = (unsigned long *)((char *)data + sizeof(XETrapDatum));
    crep = (xAllocColorPlanesReply *)&(data->u.reply);
    if ((retval = AllocColorPlanes(client->index, pmap, npixels, 
        (int)creq->red, (int)creq->green, (int)creq->blue, 
        (int)creq->contiguous, ppixels, &(crep->redMask), &(crep->greenMask),
        &(crep->blueMask))) != Success)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, retval);
        DEALLOCATE_LOCAL(data);
        return;
    }
    crep->nPixels = npixels;
    /* Swap data if necessary */
    if (client->swapped)
    {
        INT32 n, i, *ptr;
        ptr=(INT32 *)ppixels;
        swaps(&(crep->nPixels), n);
        swapl(&(crep->redMask), n);
        swapl(&(crep->greenMask), n);
        swapl(&(crep->blueMask), n);
        for (i=0; i<length; i++)
        {
            swapl(&(ptr[i]), n);
        }
    }
    /* Send data to client */
    if (XETrapWriteXLib(penv, (BYTE *)&data, data->hdr.count) 
        != data->hdr.count)
    {
        SendErrorToClient(penv->client, XETrap_avail.data.major_opcode,
            req->reqType, 0L, XETrapErrorBase + BadIO);
    }
    DEALLOCATE_LOCAL(data);
}
#endif /* COLOR_REPLIES */