aboutsummaryrefslogtreecommitdiffstats
path: root/gtk/main.c
blob: 5a1ebf5b03625bc7d061c3ca87b6f1306cfdc644 (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
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
/* main.c
 *
 * $Id: main.c,v 1.258 2002/08/24 01:17:08 guy Exp $
 *
 * Ethereal - Network traffic analyzer
 * By Gerald Combs <gerald@ethereal.com>
 * Copyright 1998 Gerald Combs
 *
 * Richard Sharpe, 13-Feb-1999, added support for initializing structures
 *                              needed by dissect routines
 * Jeff Foster,    2001/03/12,  added support tabbed hex display windowss
 * 
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 *
 * To do:
 * - Graphs
 * - Playback window
 * - Multiple window support
 * - Add cut/copy/paste
 * - Create header parsing routines
 * - Make byte view selections more fancy?
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <gtk/gtk.h>

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#include <errno.h>

#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif

#ifdef HAVE_IO_H
#include <io.h> /* open/close on win32 */
#endif

#ifdef HAVE_DIRECT_H
#include <direct.h>
#endif

#include <signal.h>

#ifdef HAVE_LIBPCAP
#include <pcap.h>
#endif

#ifdef HAVE_LIBZ
#include <zlib.h>	/* to get the libz version number */
#endif

#ifdef NEED_SNPRINTF_H
# include "snprintf.h"
#endif

#ifdef HAVE_UCD_SNMP_VERSION_H
#include <ucd-snmp/version.h>
#endif /* HAVE_UCD_SNMP_VERSION_H */

#ifdef NEED_STRERROR_H
#include "strerror.h"
#endif

#ifdef NEED_GETOPT_H
#include "getopt.h"
#endif

#ifdef WIN32 /* Needed for console I/O */
#include <fcntl.h>
#include <conio.h>
#endif

#include <epan/epan.h>
#include <epan/filesystem.h>
#include <epan/epan_dissect.h>

#include "main.h"
#include <epan/timestamp.h>
#include <epan/packet.h>
#include "capture.h"
#include "summary.h"
#include "file.h"
#include "filters.h"
#include "prefs.h"
#include "menu.h"
#include "../menu.h"
#include "color.h"
#include "color_utils.h"
#include "filter_prefs.h"
#include "file_dlg.h"
#include "column.h"
#include "print.h"
#include <epan/resolv.h>
#ifdef HAVE_LIBPCAP
#include "pcap-util.h"
#endif
#include "statusbar.h"
#include "simple_dialog.h"
#include "proto_draw.h"
#include <epan/dfilter/dfilter.h>
#include "keys.h"
#include "packet_win.h"
#include "gtkglobals.h"
#include <epan/plugins.h>
#include "colors.h"
#include <epan/strutil.h>
#include "register.h"
#include "ringbuffer.h"
#include "ui_util.h"
#include "image/clist_ascend.xpm"
#include "image/clist_descend.xpm"

#ifdef WIN32
#include "capture-wpcap.h"
#endif

typedef struct column_arrows {
  GtkWidget *table;
  GtkWidget *ascend_pm;
  GtkWidget *descend_pm;
} column_arrows;

capture_file cfile;
GtkWidget   *top_level, *packet_list, *tree_view, *byte_nb_ptr,
            *tv_scrollw, *pkt_scrollw;
static GtkWidget	*info_bar;
GdkFont     *m_r_font, *m_b_font;
guint		m_font_height, m_font_width;
static guint    main_ctx, file_ctx, help_ctx;
static GString *comp_info_str;
gchar       *ethereal_path = NULL;
gchar       *last_open_dir = NULL;
gint   root_x = G_MAXINT, root_y = G_MAXINT, top_width, top_height;

ts_type timestamp_type = RELATIVE;

GtkStyle *item_style;

/* Specifies the field currently selected in the GUI protocol tree */
field_info *finfo_selected = NULL;

#ifdef WIN32
static gboolean has_no_console;	/* TRUE if app has no console */
static gboolean console_was_created; /* TRUE if console was created */
static void create_console(void);
static void destroy_console(void);
static void console_log_handler(const char *log_domain,
    GLogLevelFlags log_level, const char *message, gpointer user_data);
#endif

static void create_main_window(gint, gint, gint, e_prefs*);

#define E_DFILTER_CM_KEY          "display_filter_combo"
#define E_DFILTER_FL_KEY          "display_filter_list"

/* About Ethereal window */
void
about_ethereal( GtkWidget *w _U_, gpointer data _U_ ) {
  simple_dialog(ESD_TYPE_INFO, NULL,
		"Ethereal - Network Protocol Analyzer\n"
		"Version " VERSION " (C) 1998-2000 Gerald Combs <gerald@ethereal.com>\n"
                "Compiled %s\n\n"

		"Check the man page for complete documentation and\n"
		"for the list of contributors.\n"

		"\nSee http://www.ethereal.com/ for more information.",
                 comp_info_str->str);
}

void
set_fonts(GdkFont *regular, GdkFont *bold)
{
	/* Yes, assert. The code that loads the font should check
	 * for NULL and provide its own error message. */
	g_assert(m_r_font && m_b_font);
	m_r_font = regular;
	m_b_font = bold;

	m_font_height = m_r_font->ascent + m_r_font->descent;
	m_font_width = gdk_string_width(m_r_font, "0");
}


/* Match selected byte pattern */
static void
match_selected_cb_do(gpointer data, int action, gchar *text)
{
    GtkWidget		*filter_te;
    char		*cur_filter, *new_filter;

    if (!text)
	return;
    g_assert(data);
    filter_te = gtk_object_get_data(GTK_OBJECT(data), E_DFILTER_TE_KEY);
    g_assert(filter_te);

    cur_filter = gtk_editable_get_chars(GTK_EDITABLE(filter_te), 0, -1);

    switch (action&MATCH_SELECTED_MASK) {

    case MATCH_SELECTED_REPLACE:
	new_filter = g_strdup(text);
	break;

    case MATCH_SELECTED_AND:
	if ((!cur_filter) || (0 == strlen(cur_filter)))
	    new_filter = g_strdup(text);
	else
	    new_filter = g_strconcat("(", cur_filter, ") && (", text, ")", NULL);
	break;

    case MATCH_SELECTED_OR:
	if ((!cur_filter) || (0 == strlen(cur_filter)))
	    new_filter = g_strdup(text);
	else
	    new_filter = g_strconcat("(", cur_filter, ") || (", text, ")", NULL);
	break;

    case MATCH_SELECTED_NOT:
	new_filter = g_strconcat("!(", text, ")", NULL);
	break;

    case MATCH_SELECTED_AND_NOT:
	if ((!cur_filter) || (0 == strlen(cur_filter)))
	    new_filter = g_strconcat("!(", text, ")", NULL);
	else
	    new_filter = g_strconcat("(", cur_filter, ") && !(", text, ")", NULL);
	break;

    case MATCH_SELECTED_OR_NOT:
	if ((!cur_filter) || (0 == strlen(cur_filter)))
	    new_filter = g_strconcat("!(", text, ")", NULL);
	else
	    new_filter = g_strconcat("(", cur_filter, ") || !(", text, ")", NULL);
	break;

    default:
	g_assert_not_reached();
	new_filter = NULL;
	break;
    }

    /* Free up the copy we got of the old filter text. */
    g_free(cur_filter);

    /* create a new one and set the display filter entry accordingly */
    gtk_entry_set_text(GTK_ENTRY(filter_te), new_filter);

    /* Run the display filter so it goes in effect. */
    if (action&MATCH_SELECTED_APPLY_NOW)
	filter_packets(&cfile, new_filter);

    /* Free up the new filter text. */
    g_free(new_filter);

    /* Free up the generated text we were handed. */
    g_free(text);
}

void
match_selected_cb_replace_ptree(GtkWidget *w, gpointer data)
{
    if (finfo_selected)
	match_selected_cb_do((data ? data : w),
	    MATCH_SELECTED_REPLACE|MATCH_SELECTED_APPLY_NOW,
	    proto_alloc_dfilter_string(finfo_selected, cfile.pd));
}

void
match_selected_cb_and_ptree(GtkWidget *w, gpointer data)
{
    if (finfo_selected)
	match_selected_cb_do((data ? data : w),
	    MATCH_SELECTED_AND|MATCH_SELECTED_APPLY_NOW,
	    proto_alloc_dfilter_string(finfo_selected, cfile.pd));
}

void
match_selected_cb_or_ptree(GtkWidget *w, gpointer data)
{
    if (finfo_selected)
	match_selected_cb_do((data ? data : w),
	    MATCH_SELECTED_OR|MATCH_SELECTED_APPLY_NOW,
	    proto_alloc_dfilter_string(finfo_selected, cfile.pd));
}

void
match_selected_cb_not_ptree(GtkWidget *w, gpointer data)
{
    if (finfo_selected)
	match_selected_cb_do((data ? data : w),
	    MATCH_SELECTED_NOT|MATCH_SELECTED_APPLY_NOW,
	    proto_alloc_dfilter_string(finfo_selected, cfile.pd));
}

void
match_selected_cb_and_ptree_not(GtkWidget *w, gpointer data)
{
    if (finfo_selected)
	match_selected_cb_do((data ? data : w),
	    MATCH_SELECTED_AND_NOT|MATCH_SELECTED_APPLY_NOW,
	    proto_alloc_dfilter_string(finfo_selected, cfile.pd));
}

void
match_selected_cb_or_ptree_not(GtkWidget *w, gpointer data)
{
    if (finfo_selected)
	match_selected_cb_do((data ? data : w),
	    MATCH_SELECTED_OR_NOT,
	    proto_alloc_dfilter_string(finfo_selected, cfile.pd));
}

void
prepare_selected_cb_replace_ptree(GtkWidget *w, gpointer data)
{
    if (finfo_selected)
	match_selected_cb_do((data ? data : w),
	    MATCH_SELECTED_REPLACE,
	    proto_alloc_dfilter_string(finfo_selected, cfile.pd));
}

void
prepare_selected_cb_and_ptree(GtkWidget *w, gpointer data)
{
    if (finfo_selected)
	match_selected_cb_do((data ? data : w),
	    MATCH_SELECTED_AND,
	    proto_alloc_dfilter_string(finfo_selected, cfile.pd));
}

void
prepare_selected_cb_or_ptree(GtkWidget *w, gpointer data)
{
    if (finfo_selected)
	match_selected_cb_do((data ? data : w),
	    MATCH_SELECTED_OR,
	    proto_alloc_dfilter_string(finfo_selected, cfile.pd));
}

void
prepare_selected_cb_not_ptree(GtkWidget *w, gpointer data)
{
    if (finfo_selected)
	match_selected_cb_do((data ? data : w),
	    MATCH_SELECTED_NOT,
	    proto_alloc_dfilter_string(finfo_selected, cfile.pd));
}

void
prepare_selected_cb_and_ptree_not(GtkWidget *w, gpointer data)
{
    if (finfo_selected)
	match_selected_cb_do((data ? data : w),
	    MATCH_SELECTED_AND_NOT,
	    proto_alloc_dfilter_string(finfo_selected, cfile.pd));
}

void
prepare_selected_cb_or_ptree_not(GtkWidget *w, gpointer data)
{
    if (finfo_selected)
	match_selected_cb_do((data ? data : w),
	    MATCH_SELECTED_OR_NOT,
	    proto_alloc_dfilter_string(finfo_selected, cfile.pd));
}

static gchar *
get_text_from_packet_list(gpointer data)
{
    gint	row = (gint)gtk_object_get_data(GTK_OBJECT(data), E_MPACKET_LIST_ROW_KEY);
    gint	column = (gint)gtk_object_get_data(GTK_OBJECT(data), E_MPACKET_LIST_COL_KEY);
    frame_data *fdata = (frame_data *)gtk_clist_get_row_data(GTK_CLIST(packet_list), row);
    epan_dissect_t *edt;
    gchar      *buf=NULL;
    int         len;
    int         err;

    if (fdata != NULL) {
	/* XXX - do something with "err" */
	wtap_seek_read(cfile.wth, fdata->file_off, &cfile.pseudo_header,
		       cfile.pd, fdata->cap_len, &err);

	edt = epan_dissect_new(FALSE, FALSE);
	epan_dissect_run(edt, &cfile.pseudo_header, cfile.pd, fdata,
			 &cfile.cinfo);
	epan_dissect_fill_in_columns(edt);

	if (strlen(cfile.cinfo.col_expr[column]) != 0 &&
	    strlen(cfile.cinfo.col_expr_val[column]) != 0) {
	    len = strlen(cfile.cinfo.col_expr[column]) +
		  strlen(cfile.cinfo.col_expr_val[column]) + 5;
	    buf = g_malloc0(len);
	    snprintf(buf, len, "%s == %s", cfile.cinfo.col_expr[column],
		     cfile.cinfo.col_expr_val[column]);
    	}

	epan_dissect_free(edt);
    }
	    
    return buf;
}

void
match_selected_cb_replace_plist(GtkWidget *w _U_, gpointer data)
{
    match_selected_cb_do(data,
        MATCH_SELECTED_REPLACE|MATCH_SELECTED_APPLY_NOW,
        get_text_from_packet_list(data));
}

void
match_selected_cb_and_plist(GtkWidget *w _U_, gpointer data)
{
    match_selected_cb_do(data,
        MATCH_SELECTED_AND|MATCH_SELECTED_APPLY_NOW,
        get_text_from_packet_list(data));
}

void
match_selected_cb_or_plist(GtkWidget *w _U_, gpointer data)
{
    match_selected_cb_do(data,
        MATCH_SELECTED_OR|MATCH_SELECTED_APPLY_NOW,
        get_text_from_packet_list(data));
}

void
match_selected_cb_not_plist(GtkWidget *w _U_, gpointer data)
{
    match_selected_cb_do(data,
        MATCH_SELECTED_NOT|MATCH_SELECTED_APPLY_NOW,
        get_text_from_packet_list(data));
}

void
match_selected_cb_and_plist_not(GtkWidget *w _U_, gpointer data)
{
    match_selected_cb_do(data,
        MATCH_SELECTED_AND_NOT|MATCH_SELECTED_APPLY_NOW,
        get_text_from_packet_list(data));
}

void
match_selected_cb_or_plist_not(GtkWidget *w _U_, gpointer data)
{
    match_selected_cb_do(data,
        MATCH_SELECTED_OR_NOT|MATCH_SELECTED_APPLY_NOW,
        get_text_from_packet_list(data));
}

void
prepare_selected_cb_replace_plist(GtkWidget *w _U_, gpointer data)
{
    match_selected_cb_do(data,
        MATCH_SELECTED_REPLACE,
        get_text_from_packet_list(data));
}

void
prepare_selected_cb_and_plist(GtkWidget *w _U_, gpointer data)
{
    match_selected_cb_do(data,
        MATCH_SELECTED_AND,
        get_text_from_packet_list(data));
}

void
prepare_selected_cb_or_plist(GtkWidget *w _U_, gpointer data)
{
    match_selected_cb_do(data,
        MATCH_SELECTED_OR,
        get_text_from_packet_list(data));
}

void
prepare_selected_cb_not_plist(GtkWidget *w _U_, gpointer data)
{
    match_selected_cb_do(data,
        MATCH_SELECTED_NOT,
        get_text_from_packet_list(data));
}

void
prepare_selected_cb_and_plist_not(GtkWidget *w _U_, gpointer data)
{
    match_selected_cb_do(data,
        MATCH_SELECTED_AND_NOT,
        get_text_from_packet_list(data));
}

void
prepare_selected_cb_or_plist_not(GtkWidget *w _U_, gpointer data)
{
    match_selected_cb_do(data,
        MATCH_SELECTED_OR_NOT,
        get_text_from_packet_list(data));
}

/* Run the current display filter on the current packet set, and
   redisplay. */
static void
filter_activate_cb(GtkWidget *w, gpointer data)
{
  GtkCombo  *filter_cm = gtk_object_get_data(GTK_OBJECT(w), E_DFILTER_CM_KEY);
  GList     *filter_list = gtk_object_get_data(GTK_OBJECT(filter_cm), E_DFILTER_FL_KEY);
  GList     *li;
  gboolean   add_filter = TRUE;
  gboolean   free_filter = TRUE;
  char      *s;
  
  g_assert(data);
  s = g_strdup(gtk_entry_get_text(GTK_ENTRY(data)));
  
  /* GtkCombos don't let us get at their list contents easily, so we maintain
     our own filter list, and feed it to gtk_combo_set_popdown_strings when
     a new filter is added. */
  if (filter_packets(&cfile, s)) {
    li = g_list_first(filter_list);
    while (li) {
      if (li->data && strcmp(s, li->data) == 0)
        add_filter = FALSE;
      li = li->next;
    }

    if (add_filter) {
      free_filter = FALSE;
      filter_list = g_list_append(filter_list, s);
      gtk_object_set_data(GTK_OBJECT(filter_cm), E_DFILTER_FL_KEY, filter_list);
      gtk_combo_set_popdown_strings(filter_cm, filter_list);
      gtk_entry_set_text(GTK_ENTRY(filter_cm->entry), g_list_last(filter_list)->data);
    }
  }
  if (free_filter)
    g_free(s);
}

/* redisplay with no display filter */
static void
filter_reset_cb(GtkWidget *w, gpointer data _U_)
{
  GtkWidget *filter_te = NULL;

  if ((filter_te = gtk_object_get_data(GTK_OBJECT(w), E_DFILTER_TE_KEY))) {
    gtk_entry_set_text(GTK_ENTRY(filter_te), "");
  }
  filter_packets(&cfile, NULL);
}

/* GTKClist compare routine, overrides default to allow numeric comparison */
static gint
packet_list_compare(GtkCList *clist, gconstpointer  ptr1, gconstpointer  ptr2)
{
  /* Get row text strings */
  char *text1 = GTK_CELL_TEXT (((GtkCListRow *)ptr1)->cell[clist->sort_column])->text;
  char *text2 = GTK_CELL_TEXT (((GtkCListRow *)ptr2)->cell[clist->sort_column])->text;

  /* Attempt to convert to numbers */
  double  num1 = atof(text1);
  double  num2 = atof(text2);
  
  gint  col_fmt = cfile.cinfo.col_fmt[clist->sort_column];
  
  if ((col_fmt == COL_NUMBER) || (col_fmt == COL_REL_TIME) || (col_fmt == COL_DELTA_TIME) ||
      ((col_fmt == COL_CLS_TIME) && (timestamp_type == RELATIVE)) ||
      ((col_fmt == COL_CLS_TIME) && (timestamp_type == DELTA))    ||
      (col_fmt == COL_UNRES_SRC_PORT) || (col_fmt == COL_UNRES_DST_PORT) ||
      ((num1 != 0) && (num2 != 0) && ((col_fmt == COL_DEF_SRC_PORT) || (col_fmt == COL_RES_SRC_PORT) ||
                                      (col_fmt == COL_DEF_DST_PORT) || (col_fmt == COL_RES_DST_PORT))) ||
      (col_fmt == COL_PACKET_LENGTH)) {

    /* Compare numeric column */

    if (num1 < num2)
      return -1;
    else if (num1 > num2)
      return 1;
    else
      return 0;
  }
  
  else {
    
    /* Compare text column */
    if (!text2)
      return (text1 != NULL);

    if (!text1)
      return -1;

    return strcmp(text1, text2);
  }
}

/* What to do when a column is clicked */
static void 
packet_list_click_column_cb(GtkCList *clist, gint column, gpointer data)
{
  column_arrows *col_arrows = (column_arrows *) data;
  int i;
  
  gtk_clist_freeze(clist);
  
  for (i = 0; i < cfile.cinfo.num_cols; i++) {
    gtk_widget_hide(col_arrows[i].ascend_pm);
    gtk_widget_hide(col_arrows[i].descend_pm);
  }
  
  if (column == clist->sort_column) {
    if (clist->sort_type == GTK_SORT_ASCENDING) {
      clist->sort_type = GTK_SORT_DESCENDING;
      gtk_widget_show(col_arrows[column].descend_pm);
    } else {
      clist->sort_type = GTK_SORT_ASCENDING;
      gtk_widget_show(col_arrows[column].ascend_pm);
    }
  }
  else {
    clist->sort_type = GTK_SORT_ASCENDING;
    gtk_widget_show(col_arrows[column].ascend_pm);
    gtk_clist_set_sort_column(clist, column);
  }
  gtk_clist_thaw(clist);

  gtk_clist_sort(clist);
}

/* mark packets */
static void 
set_frame_mark(gboolean set, frame_data *frame, gint row) {
  GdkColor fg, bg;

  if (row == -1)
    return;
  if (set) {
    mark_frame(&cfile, frame);
    color_t_to_gdkcolor(&fg, &prefs.gui_marked_fg);
    color_t_to_gdkcolor(&bg, &prefs.gui_marked_bg);
  } else {
    unmark_frame(&cfile, frame);
    fg = BLACK;
    bg = WHITE;
  }
  file_set_save_marked_sensitive();
  gtk_clist_set_background(GTK_CLIST(packet_list), row, &bg);
  gtk_clist_set_foreground(GTK_CLIST(packet_list), row, &fg);
}

static void
packet_list_button_pressed_cb(GtkWidget *w, GdkEvent *event, gpointer data _U_) {
  
  GdkEventButton *event_button = (GdkEventButton *)event;
  gint row, column;

  if (w == NULL || event == NULL)
    return;

  if (event->type == GDK_BUTTON_PRESS && event_button->button == 2 &&
      gtk_clist_get_selection_info(GTK_CLIST(w), event_button->x, event_button->y,
				   &row, &column)) {
    frame_data *fdata = (frame_data *) gtk_clist_get_row_data(GTK_CLIST(w), row);
    set_frame_mark(!fdata->flags.marked, fdata, row);
  }
}

void mark_frame_cb(GtkWidget *w _U_, gpointer data _U_) {
  if (cfile.current_frame) {
    /* XXX hum, should better have a "cfile->current_row" here ... */
    set_frame_mark(!cfile.current_frame->flags.marked,
		   cfile.current_frame, 
		   gtk_clist_find_row_from_data(GTK_CLIST(packet_list), 
						cfile.current_frame));
  }
}

static void mark_all_frames(gboolean set) {
  frame_data *fdata;
  for (fdata = cfile.plist; fdata != NULL; fdata = fdata->next) {
    set_frame_mark(set,
		   fdata,
		   gtk_clist_find_row_from_data(GTK_CLIST(packet_list), fdata));    
  }
}

void update_marked_frames(void) {
  frame_data *fdata;
  if (cfile.plist == NULL) return;
  for (fdata = cfile.plist; fdata != NULL; fdata = fdata->next) {
    if (fdata->flags.marked)
      set_frame_mark(TRUE,
		     fdata,
		     gtk_clist_find_row_from_data(GTK_CLIST(packet_list),
						  fdata));
  }
}

void mark_all_frames_cb(GtkWidget *w _U_, gpointer data _U_) {
  mark_all_frames(TRUE);
}

void unmark_all_frames_cb(GtkWidget *w _U_, gpointer data _U_) {
  mark_all_frames(FALSE);
}

/* What to do when a list item is selected/unselected */
static void
packet_list_select_cb(GtkWidget *w _U_, gint row, gint col _U_, gpointer evt _U_) {

/* Remove the hex display tabbed pages */
  while( (gtk_notebook_get_nth_page( GTK_NOTEBOOK(byte_nb_ptr), 0)))
    gtk_notebook_remove_page( GTK_NOTEBOOK(byte_nb_ptr), 0);

  select_packet(&cfile, row);
}


static void
packet_list_unselect_cb(GtkWidget *w _U_, gint row _U_, gint col _U_, gpointer evt _U_) {

  unselect_packet(&cfile);
}


static void
tree_view_select_row_cb(GtkCTree *ctree, GList *node, gint column _U_, gpointer user_data _U_)
{
	field_info	*finfo;
	gchar		*help_str = NULL;
	gchar		len_str[2+10+1+5+1];	/* ", {N} bytes\0",
						   N < 4294967296 */
	gboolean        has_blurb = FALSE;
	guint           length = 0, byte_len;
	GtkWidget	*byte_view;
	const guint8	*byte_data;

	g_assert(node);
	finfo = gtk_ctree_node_get_row_data( ctree, GTK_CTREE_NODE(node) );
	if (!finfo) return;

	set_notebook_page(byte_nb_ptr, finfo->ds_tvb);

	byte_view = get_notebook_bv_ptr(byte_nb_ptr);
	byte_data = get_byte_view_data_and_length(byte_view, &byte_len);
	g_assert(byte_data != NULL);

	finfo_selected = finfo;
	set_menus_for_selected_tree_row(TRUE);

	if (finfo->hfinfo) {
	  if (finfo->hfinfo->blurb != NULL && 
	      finfo->hfinfo->blurb[0] != '\0') {
	    has_blurb = TRUE;
	    length = strlen(finfo->hfinfo->blurb);
	  } else {
	    length = strlen(finfo->hfinfo->name);
	  }
	  if (finfo->length == 0) {
	    len_str[0] = '\0';
	  } else if (finfo->length == 1) {
	    strcpy (len_str, ", 1 byte");
	  } else {
	    snprintf (len_str, sizeof len_str, ", %d bytes", finfo->length);
	  }
	  statusbar_pop_field_msg();	/* get rid of current help msg */
          if (length) {
	    length += strlen(finfo->hfinfo->abbrev) + strlen(len_str) + 10;
	    help_str = g_malloc(sizeof(gchar) * length);
	    sprintf(help_str, "%s (%s)%s", 
	       (has_blurb) ? finfo->hfinfo->blurb : finfo->hfinfo->name,
	       finfo->hfinfo->abbrev, len_str);
	    statusbar_push_field_msg(help_str);
	    g_free(help_str);
          } else {
            /*
	     * Don't show anything if the field name is zero-length;
	     * the pseudo-field for "proto_tree_add_text()" is such
	     * a field, and we don't want "Text (text)" showing up
	     * on the status line if you've selected such a field.
	     *
	     * XXX - there are zero-length fields for which we *do*
	     * want to show the field name.
	     *
	     * XXX - perhaps the name and abbrev field should be null
	     * pointers rather than null strings for that pseudo-field,
	     * but we'd have to add checks for null pointers in some
	     * places if we did that.
	     *
	     * Or perhaps protocol tree items added with
	     * "proto_tree_add_text()" should have -1 as the field index,
	     * with no pseudo-field being used, but that might also
	     * require special checks for -1 to be added.
	     */
	    statusbar_push_field_msg("");
          }
	}

	packet_hex_print(GTK_TEXT(byte_view), byte_data, cfile.current_frame,
		finfo, byte_len);
}

static void
tree_view_unselect_row_cb(GtkCTree *ctree _U_, GList *node _U_, gint column _U_, gpointer user_data _U_)
{
	GtkWidget	*byte_view;
	const guint8	*data;
	guint		len;	

	/*
	 * Which byte view is displaying the current protocol tree
	 * row's data?
	 */
	byte_view = get_notebook_bv_ptr(byte_nb_ptr);
	if (byte_view == NULL)
		return;	/* none */

	data = get_byte_view_data_and_length(byte_view, &len);
	if (data == NULL)
		return;	/* none */

	unselect_field();
	packet_hex_print(GTK_TEXT(byte_view), data, cfile.current_frame,
		NULL, len);
}

void collapse_all_cb(GtkWidget *widget _U_, gpointer data _U_) {
  if (cfile.edt->tree)
    collapse_all_tree(cfile.edt->tree, tree_view);
}

void expand_all_cb(GtkWidget *widget _U_, gpointer data _U_) {
  if (cfile.edt->tree)
    expand_all_tree(cfile.edt->tree, tree_view);
}

void resolve_name_cb(GtkWidget *widget _U_, gpointer data _U_) {
  if (cfile.edt->tree) {
    guint32 tmp = g_resolv_flags;
    g_resolv_flags = RESOLV_ALL;
    proto_tree_draw(cfile.edt->tree, tree_view);
    g_resolv_flags = tmp;
  }
}

/* Set the selection mode of the packet list window. */
void
set_plist_sel_browse(gboolean val)
{
	gboolean old_val;

	old_val =
	    (GTK_CLIST(packet_list)->selection_mode == GTK_SELECTION_SINGLE);

	if (val == old_val) {
		/*
		 * The mode isn't changing, so don't do anything.
		 * In particular, don't gratuitiously unselect the
		 * current packet.
		 *
		 * XXX - why do we have to unselect the current packet
		 * ourselves?  The documentation for the GtkCList at
		 *
		 *	http://developer.gnome.org/doc/API/gtk/gtkclist.html
		 *
		 * says "Note that setting the widget's selection mode to
		 * one of GTK_SELECTION_BROWSE or GTK_SELECTION_SINGLE will
		 * cause all the items in the GtkCList to become deselected."
		 */
		return;
	}

	if (finfo_selected)
		unselect_packet(&cfile);

	/* Yeah, GTK uses "browse" in the case where we do not, but oh well. I think
	 * "browse" in Ethereal makes more sense than "SINGLE" in GTK+ */
	if (val) {
		gtk_clist_set_selection_mode(GTK_CLIST(packet_list), GTK_SELECTION_SINGLE);
	}
	else {
		gtk_clist_set_selection_mode(GTK_CLIST(packet_list), GTK_SELECTION_BROWSE);
	}
}
	
/* Set the font of the packet list window. */
void
set_plist_font(GdkFont *font)
{
	GtkStyle *style;
	int i;

	style = gtk_style_new();
	gdk_font_unref(style->font);
	style->font = font;
	gdk_font_ref(font);

	gtk_widget_set_style(packet_list, style);

	/* Compute static column sizes to use during a "-S" capture, so that
 	   the columns don't resize during a live capture. */
	for (i = 0; i < cfile.cinfo.num_cols; i++) {
		cfile.cinfo.col_width[i] = gdk_string_width(font,
			get_column_longest_string(get_column_format(i)));
	}
}

/*
 * Push a message referring to file access onto the statusbar.
 */
void
statusbar_push_file_msg(gchar *msg)
{
	gtk_statusbar_push(GTK_STATUSBAR(info_bar), file_ctx, msg);
}

/*
 * Pop a message referring to file access off the statusbar.
 */
void
statusbar_pop_file_msg(void)
{
	gtk_statusbar_pop(GTK_STATUSBAR(info_bar), file_ctx);
}

/*
 * XXX - do we need multiple statusbar contexts?
 */

/*
 * Push a message referring to the currently-selected field onto the statusbar.
 */
void
statusbar_push_field_msg(gchar *msg)
{
	gtk_statusbar_push(GTK_STATUSBAR(info_bar), help_ctx, msg);
}

/*
 * Pop a message referring to the currently-selected field off the statusbar.
 */
void
statusbar_pop_field_msg(void)
{
	gtk_statusbar_pop(GTK_STATUSBAR(info_bar), help_ctx);
}

static gboolean
do_quit(void)
{
	/* XXX - should we check whether the capture file is an
	   unsaved temporary file for a live capture and, if so,
	   pop up a "do you want to exit without saving the capture
	   file?" dialog, and then just return, leaving said dialog
	   box to forcibly quit if the user clicks "OK"?

	   If so, note that this should be done in a subroutine that
	   returns TRUE if we do so, and FALSE otherwise, and if it
	   returns TRUE we should return TRUE without nuking anything.

	   Note that, if we do that, we might also want to check if
	   an "Update list of packets in real time" capture is in
	   progress and, if so, ask whether they want to terminate
	   the capture and discard it, and return TRUE, before nuking
	   any child capture, if they say they don't want to do so. */

#ifdef HAVE_LIBPCAP
	/* Nuke any child capture in progress. */
	kill_capture_child();
#endif

	/* Are we in the middle of reading a capture? */
	if (cfile.state == FILE_READ_IN_PROGRESS) {
		/* Yes, so we can't just close the file and quit, as
		   that may yank the rug out from under the read in
		   progress; instead, just set the state to
		   "FILE_READ_ABORTED" and return - the code doing the read
		   will check for that and, if it sees that, will clean
		   up and quit. */
		cfile.state = FILE_READ_ABORTED;

		/* Say that the window should *not* be deleted;
		   that'll be done by the code that cleans up. */
		return TRUE;
	} else {
		/* Close any capture file we have open; on some OSes, you
		   can't unlink a temporary capture file if you have it
		   open.
		   "close_cap_file()" will unlink it after closing it if
		   it's a temporary file.

		   We do this here, rather than after the main loop returns,
		   as, after the main loop returns, the main window may have
		   been destroyed (if this is called due to a "destroy"
		   even on the main window rather than due to the user
		   selecting a menu item), and there may be a crash
		   or other problem when "close_cap_file()" tries to
		   clean up stuff in the main window.

		   XXX - is there a better place to put this?
		   Or should we have a routine that *just* closes the
		   capture file, and doesn't do anything with the UI,
		   which we'd call here, and another routine that
		   calls that routine and also cleans up the UI, which
		   we'd call elsewhere? */
		close_cap_file(&cfile);

		/* Exit by leaving the main loop, so that any quit functions
		   we registered get called. */
		gtk_main_quit();

		/* Say that the window should be deleted. */
		return FALSE;
	}
}

static gboolean
main_window_delete_event_cb(GtkWidget *widget _U_, GdkEvent *event _U_, gpointer data _U_)
{
	gint desk_x, desk_y;

	/* Try to grab our geometry */
	gdk_window_get_root_origin(top_level->window, &root_x, &root_y);
	if (gdk_window_get_deskrelative_origin(top_level->window,
				&desk_x, &desk_y)) {
		if (desk_x <= root_x && desk_y <= root_y) {
			root_x = desk_x;
			root_y = desk_y;
		}
	}

	/* XXX - Is this the "approved" method? */
	gdk_window_get_size(top_level->window, &top_width, &top_height);

	/* "do_quit()" indicates whether the main window should be deleted. */
	return do_quit();
}

void
file_quit_cmd_cb (GtkWidget *widget _U_, gpointer data _U_)
{
	do_quit();
}

static void 
print_usage(gboolean print_ver) {

  if (print_ver) {
    fprintf(stderr, "This is GNU " PACKAGE " " VERSION ", compiled %s\n",
	  comp_info_str->str);
  }  
#ifdef HAVE_LIBPCAP
  fprintf(stderr, "\n%s [ -vh ] [ -klpQS ] [ -a <capture autostop condition> ] ...\n",
	  PACKAGE);
  fprintf(stderr, "\t[ -b <number of ringbuffer files> ] [ -B <byte view height> ]\n");
  fprintf(stderr, "\t[ -c <count> ] [ -f <capture filter> ] [ -i <interface> ]\n");
  fprintf(stderr, "\t[ -m <medium font> ] [ -n ] [ -N <resolving> ]\n");
  fprintf(stderr, "\t[ -o <preference setting> ] ... [ -P <packet list height> ]\n");
  fprintf(stderr, "\t[ -r <infile> ] [ -R <read filter> ] [ -s <snaplen> ] \n");
  fprintf(stderr, "\t[ -t <time stamp format> ] [ -T <tree view height> ]\n");
  fprintf(stderr, "\t[ -w <savefile> ] [ <infile> ]\n");
#else
  fprintf(stderr, "\n%s [ -vh ] [ -B <byte view height> ] [ -m <medium font> ]\n",
	  PACKAGE);
  fprintf(stderr, "\t[ -n ] [ -N <resolving> ]\n");
  fprintf(stderr, "\t[ -o <preference setting> ... [ -P <packet list height> ]\n");
  fprintf(stderr, "\t[ -r <infile> ] [ -R <read filter> ] [ -t <time stamp format> ]\n");
  fprintf(stderr, "\t[ -T <tree view height> ] [ <infile> ]\n");
#endif
}

static void 
show_version(void)
{
#ifdef WIN32
  create_console();
#endif

  printf("%s %s, %s\n", PACKAGE, VERSION, comp_info_str->str);
}

static int
get_positive_int(const char *string, const char *name)
{
  long number;
  char *p;

  number = strtol(string, &p, 10);
  if (p == string || *p != '\0') {
    fprintf(stderr, "ethereal: The specified %s \"%s\" is not a decimal number\n",
	    name, string);
    exit(1);
  }
  if (number < 0) {
    fprintf(stderr, "ethereal: The specified %s \"%s\" is a negative number\n",
	    name, string);
    exit(1);
  }
  if (number == 0) {
    fprintf(stderr, "ethereal: The specified %s \"%s\" is zero\n",
            name, string);
    exit(1);
  }
  if (number > INT_MAX) {
    fprintf(stderr, "ethereal: The specified %s \"%s\" is too large (greater than %d)\n",
	    name, string, INT_MAX);
    exit(1);
  }
  return number;
}

#ifdef HAVE_LIBPCAP
/*
 * Given a string of the form "<autostop criterion>:<value>", as might appear
 * as an argument to a "-a" option, parse it and set the criterion in
 * question.  Return an indication of whether it succeeded or failed
 * in some fashion.
 */
static gboolean
set_autostop_criterion(const char *autostoparg)
{
  guchar *p, *colonp;

  colonp = strchr(autostoparg, ':');
  if (colonp == NULL)
    return FALSE;

  p = colonp;
  *p++ = '\0';

  /*
   * Skip over any white space (there probably won't be any, but
   * as we allow it in the preferences file, we might as well
   * allow it here).
   */
  while (isspace(*p))
    p++;
  if (*p == '\0') {
    /*
     * Put the colon back, so if our caller uses, in an
     * error message, the string they passed us, the message
     * looks correct.
     */
    *colonp = ':';
    return FALSE;
  }
  if (strcmp(autostoparg,"duration") == 0) {
    capture_opts.has_autostop_duration = TRUE;
    capture_opts.autostop_duration = get_positive_int(p,"autostop duration");
  } else if (strcmp(autostoparg,"filesize") == 0) {
    capture_opts.has_autostop_filesize = TRUE;
    capture_opts.autostop_filesize = get_positive_int(p,"autostop filesize");
  } else {
    return FALSE;
  }
  *colonp = ':'; /* put the colon back */
  return TRUE;
}
#endif

/* And now our feature presentation... [ fade to music ] */
int
main(int argc, char *argv[])
{
#ifdef HAVE_LIBPCAP
  char                *command_name;
#endif
  char                *s;
  int                  i;
  int                  opt;
  extern char         *optarg;
  gboolean             arg_error = FALSE;
#ifdef HAVE_LIBPCAP
#ifdef HAVE_PCAP_VERSION
  extern char          pcap_version[];
#endif /* HAVE_PCAP_VERSION */
#endif /* HAVE_LIBPCAP */
  
#ifdef WIN32
  WSADATA 	       wsaData; 
#endif

  char                *gpf_path, *cf_path, *df_path;
  char                *pf_path;
  int                  gpf_open_errno, pf_open_errno, cf_open_errno, df_open_errno;
  int                  err;
#ifdef HAVE_LIBPCAP
  gboolean             start_capture = FALSE;
  gchar               *save_file = NULL;
  GList               *if_list;
  gchar                err_str[PCAP_ERRBUF_SIZE];
  gboolean             stats_known;
  struct pcap_stat     stats;
#else
  gboolean             capture_option_specified = FALSE;
#endif
  gint                 pl_size = 280, tv_size = 95, bv_size = 75;
  gchar               *rc_file, *cf_name = NULL, *rfilter = NULL;
  dfilter_t           *rfcode = NULL;
  gboolean             rfilter_parse_failed = FALSE;
  e_prefs             *prefs;
  char                 badopt;
  char                *bold_font_name;
  gint                 desk_x, desk_y;
  gboolean             prefs_write_needed = FALSE;

#define OPTSTRING_INIT "a:b:B:c:f:hi:klm:nN:o:pP:Qr:R:Ss:t:T:w:v"

#ifdef HAVE_LIBPCAP
#ifdef WIN32
#define OPTSTRING_CHILD "W:Z:"
#else
#define OPTSTRING_CHILD "W:"
#endif  /* WIN32 */
#else
#define OPTSTRING_CHILD ""
#endif  /* HAVE_LIBPCAP */

  char optstring[sizeof(OPTSTRING_INIT) + sizeof(OPTSTRING_CHILD) - 1] =
    OPTSTRING_INIT;

  ethereal_path = argv[0];

#ifdef WIN32
  /* Arrange that if we have no console window, and a GLib message logging
     routine is called to log a message, we pop up a console window.

     We do that by inserting our own handler for all messages logged
     to the default domain; that handler pops up a console if necessary,
     and then calls the default handler. */
  g_log_set_handler(NULL,
		    G_LOG_LEVEL_ERROR|
		    G_LOG_LEVEL_CRITICAL|
		    G_LOG_LEVEL_WARNING|
		    G_LOG_LEVEL_MESSAGE|
		    G_LOG_LEVEL_INFO|
		    G_LOG_LEVEL_DEBUG|
		    G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION,
		    console_log_handler, NULL);
#endif

#ifdef HAVE_LIBPCAP
  command_name = get_basename(ethereal_path);
  /* Set "capture_child" to indicate whether this is going to be a child
     process for a "-S" capture. */
  capture_child = (strcmp(command_name, CHILD_NAME) == 0);
  if (capture_child)
    strcat(optstring, OPTSTRING_CHILD);
#endif

  /* Register all dissectors; we must do this before checking for the
     "-G" flag, as the "-G" flag dumps information registered by the
     dissectors, and we must do it before we read the preferences, in
     case any dissectors register preferences. */
  epan_init(PLUGIN_DIR,register_all_protocols,register_all_protocol_handoffs);

  /* Now register the preferences for any non-dissector modules.
     We must do that before we read the preferences as well. */
  prefs_register_modules();

  /* If invoked with the "-G" flag, we dump out information based on
     the argument to the "-G" flag; if no argument is specified,
     for backwards compatibility we dump out a glossary of display
     filter symbols.

     We must do this before calling "gtk_init()", because "gtk_init()"
     tries to open an X display, and we don't want to have to do any X
     stuff just to do a build.

     Given that we call "gtk_init()" before doing the regular argument
     list processing, so that it can handle X and GTK+ arguments and
     remove them from the list at which we look, this means we must do
     this before doing the regular argument list processing, as well.

     This means that:

	you must give the "-G" flag as the first flag on the command line;

	you must give it as "-G", nothing more, nothing less;

	the first argument after the "-G" flag, if present, will be used
	to specify the information to dump;

	arguments after that will not be used. */
  if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
    if (argc == 2)
      proto_registrar_dump_fields();
    else {
      if (strcmp(argv[2], "fields") == 0)
        proto_registrar_dump_fields();
      else if (strcmp(argv[2], "protocols") == 0)
        proto_registrar_dump_protocols();
      else {
        fprintf(stderr, "tethereal: Invalid \"%s\" option for -G flag\n",
                argv[2]);
        exit(1);
      }
    }
    exit(0);
  }

  /* Set the current locale according to the program environment. 
   * We haven't localized anything, but some GTK widgets are localized
   * (the file selection dialogue, for example).
   * This also sets the C-language locale to the native environment. */
  gtk_set_locale();

  /* Let GTK get its args */
  gtk_init (&argc, &argv);
  
  /* Read the preference files. */
  prefs = read_prefs(&gpf_open_errno, &gpf_path, &pf_open_errno, &pf_path);

#ifdef HAVE_LIBPCAP
  capture_opts.has_snaplen = FALSE;
  capture_opts.snaplen = MIN_PACKET_SIZE;
  capture_opts.has_autostop_count = FALSE;
  capture_opts.autostop_count = 1;
  capture_opts.has_autostop_duration = FALSE;
  capture_opts.autostop_duration = 1;
  capture_opts.has_autostop_filesize = FALSE;
  capture_opts.autostop_filesize = 1;
  capture_opts.ringbuffer_on = FALSE;
  capture_opts.ringbuffer_num_files = RINGBUFFER_MIN_NUM_FILES;

  /* If this is a capture child process, it should pay no attention
     to the "prefs.capture_prom_mode" setting in the preferences file;
     it should do what the parent process tells it to do, and if
     the parent process wants it not to run in promiscuous mode, it'll
     tell it so with a "-p" flag.

     Otherwise, set promiscuous mode from the preferences setting. */
  if (capture_child)
    capture_opts.promisc_mode = TRUE;
  else
    capture_opts.promisc_mode = prefs->capture_prom_mode;

  /* Set "Update list of packets in real time" mode from the preferences
     setting. */
  capture_opts.sync_mode = prefs->capture_real_time;

  /* And do the same for "Automatic scrolling in live capture" mode. */
  auto_scroll_live = prefs->capture_auto_scroll;
#endif

  /* Set the name resolution code's flags from the preferences. */
  g_resolv_flags = prefs->name_resolve;

  /* Read the capture filter file. */
  read_filter_list(CFILTER_LIST, &cf_path, &cf_open_errno);

  /* Read the display filter file. */
  read_filter_list(DFILTER_LIST, &df_path, &df_open_errno);

  /* Initialize the capture file struct */
  cfile.plist		= NULL;
  cfile.plist_end	= NULL;
  cfile.wth		= NULL;
  cfile.filename	= NULL;
  cfile.user_saved	= FALSE;
  cfile.is_tempfile	= FALSE;
  cfile.rfcode		= NULL;
  cfile.dfilter		= NULL;
  cfile.dfcode		= NULL;
#ifdef HAVE_LIBPCAP
  cfile.cfilter		= g_strdup(EMPTY_FILTER);
#endif
  cfile.iface		= NULL;
  cfile.save_file	= NULL;
  cfile.save_file_fd	= -1;
  cfile.has_snap	= FALSE;
  cfile.snap		= WTAP_MAX_PACKET_SIZE;
  cfile.count		= 0;

  /* Assemble the compile-time options */
  comp_info_str = g_string_new("");

  g_string_append(comp_info_str, "with ");
  g_string_sprintfa(comp_info_str,
#ifdef GTK_MAJOR_VERSION
    "GTK+ %d.%d.%d", GTK_MAJOR_VERSION, GTK_MINOR_VERSION,
    GTK_MICRO_VERSION);
#else
    "GTK+ (version unknown)");
#endif

  g_string_append(comp_info_str, ", with ");
  g_string_sprintfa(comp_info_str,
#ifdef GLIB_MAJOR_VERSION
    "GLib %d.%d.%d", GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION,
    GLIB_MICRO_VERSION);
#else
    "GLib (version unknown)");
#endif

#ifdef HAVE_LIBPCAP
  g_string_append(comp_info_str, ", with libpcap ");
#ifdef HAVE_PCAP_VERSION
  g_string_append(comp_info_str, pcap_version);
#else /* HAVE_PCAP_VERSION */
  g_string_append(comp_info_str, "(version unknown)");
#endif /* HAVE_PCAP_VERSION */
#else /* HAVE_LIBPCAP */
  g_string_append(comp_info_str, ", without libpcap");
#endif /* HAVE_LIBPCAP */

#ifdef HAVE_LIBZ
  g_string_append(comp_info_str, ", with libz ");
#ifdef ZLIB_VERSION
  g_string_append(comp_info_str, ZLIB_VERSION);
#else /* ZLIB_VERSION */
  g_string_append(comp_info_str, "(version unknown)");
#endif /* ZLIB_VERSION */
#else /* HAVE_LIBZ */
  g_string_append(comp_info_str, ", without libz");
#endif /* HAVE_LIBZ */

/* Oh, this is pretty */
#ifdef HAVE_UCD_SNMP
  g_string_append(comp_info_str, ", with UCD SNMP ");
#ifdef HAVE_UCD_SNMP_VERSION_H
  g_string_append(comp_info_str, VersionInfo);
#else /* HAVE_UCD_SNMP_VERSION_H */
  g_string_append(comp_info_str, "(version unknown)");
#endif /* HAVE_UCD_SNMP_VERSION_H */
#else /* no SNMP library */
  g_string_append(comp_info_str, ", without UCD SNMP");
#endif

  /* Now get our args */
  while ((opt = getopt(argc, argv, optstring)) != -1) {
    switch (opt) {
      case 'a':        /* autostop criteria */
#ifdef HAVE_LIBPCAP
        if (set_autostop_criterion(optarg) == FALSE) {
          fprintf(stderr, "ethereal: Invalid or unknown -a flag \"%s\"\n", optarg);
          exit(1);          
        }
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
        break;
      case 'b':        /* Ringbuffer option */
#ifdef HAVE_LIBPCAP
        capture_opts.ringbuffer_on = TRUE;
        capture_opts.ringbuffer_num_files =
          get_positive_int(optarg, "number of ring buffer files");
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
        break;
      case 'B':        /* Byte view pane height */
        bv_size = get_positive_int(optarg, "byte view pane height");
        break;
      case 'c':        /* Capture xxx packets */
#ifdef HAVE_LIBPCAP
        capture_opts.has_autostop_count = TRUE;
        capture_opts.autostop_count = get_positive_int(optarg, "packet count");
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
        break;
      case 'f':
#ifdef HAVE_LIBPCAP
	if (cfile.cfilter)
		g_free(cfile.cfilter);
	cfile.cfilter = g_strdup(optarg);
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
	break;
      case 'h':        /* Print help and exit */
	print_usage(TRUE);
	exit(0);
        break;
      case 'i':        /* Use interface xxx */
#ifdef HAVE_LIBPCAP
        cfile.iface = g_strdup(optarg);
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
        break;
      case 'k':        /* Start capture immediately */
#ifdef HAVE_LIBPCAP
        start_capture = TRUE;
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
        break;
      case 'l':        /* Automatic scrolling in live capture mode */
#ifdef HAVE_LIBPCAP
        auto_scroll_live = TRUE;
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
        break;
      case 'm':        /* Fixed-width font for the display */
        if (prefs->gui_font_name != NULL)
          g_free(prefs->gui_font_name);
        prefs->gui_font_name = g_strdup(optarg);
        break;
      case 'n':        /* No name resolution */
        g_resolv_flags = RESOLV_NONE;
        break;
      case 'N':        /* Select what types of addresses/port #s to resolve */
        if (g_resolv_flags == RESOLV_ALL)
          g_resolv_flags = RESOLV_NONE;
        badopt = string_to_name_resolve(optarg, &g_resolv_flags);
        if (badopt != '\0') {
          fprintf(stderr, "ethereal: -N specifies unknown resolving option '%c'; valid options are 'm', 'n', and 't'\n",
			badopt);
          exit(1);
        }
        break;
      case 'o':        /* Override preference from command line */
        switch (prefs_set_pref(optarg)) {

	case PREFS_SET_SYNTAX_ERR:
          fprintf(stderr, "ethereal: Invalid -o flag \"%s\"\n", optarg);
          exit(1);
          break;

        case PREFS_SET_NO_SUCH_PREF:
        case PREFS_SET_OBSOLETE:
          fprintf(stderr, "ethereal: -o flag \"%s\" specifies unknown preference\n",
			optarg);
          exit(1);
          break;
        }
        break;
      case 'p':        /* Don't capture in promiscuous mode */
#ifdef HAVE_LIBPCAP
	capture_opts.promisc_mode = FALSE;
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
	break;
      case 'P':        /* Packet list pane height */
        pl_size = get_positive_int(optarg, "packet list pane height");
        break;
      case 'Q':        /* Quit after capture (just capture to file) */
#ifdef HAVE_LIBPCAP
        quit_after_cap = 1;
        start_capture = TRUE;  /*** -Q implies -k !! ***/
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
        break;
      case 'r':        /* Read capture file xxx */
	/* We may set "last_open_dir" to "cf_name", and if we change
	   "last_open_dir" later, we free the old value, so we have to
	   set "cf_name" to something that's been allocated. */
        cf_name = g_strdup(optarg);
        break;
      case 'R':        /* Read file filter */
        rfilter = optarg;
        break;
      case 's':        /* Set the snapshot (capture) length */
#ifdef HAVE_LIBPCAP
        capture_opts.has_snaplen = TRUE;
        capture_opts.snaplen = get_positive_int(optarg, "snapshot length");
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
        break;
      case 'S':        /* "Sync" mode: used for following file ala tail -f */
#ifdef HAVE_LIBPCAP
        capture_opts.sync_mode = TRUE;
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
        break;
      case 't':        /* Time stamp type */
        if (strcmp(optarg, "r") == 0)
          timestamp_type = RELATIVE;
        else if (strcmp(optarg, "a") == 0)
          timestamp_type = ABSOLUTE;
        else if (strcmp(optarg, "ad") == 0)
          timestamp_type = ABSOLUTE_WITH_DATE;
        else if (strcmp(optarg, "d") == 0)
          timestamp_type = DELTA;
        else {
          fprintf(stderr, "ethereal: Invalid time stamp type \"%s\"\n",
            optarg);
          fprintf(stderr, "It must be \"r\" for relative, \"a\" for absolute,\n");
          fprintf(stderr, "\"ad\" for absolute with date, or \"d\" for delta.\n");
          exit(1);
        }
        break;
      case 'T':        /* Tree view pane height */
        tv_size = get_positive_int(optarg, "tree view pane height");
        break;
      case 'v':        /* Show version and exit */
        show_version();
#ifdef WIN32
        if (console_was_created)
          destroy_console();
#endif
        exit(0);
        break;
      case 'w':        /* Write to capture file xxx */
#ifdef HAVE_LIBPCAP
        save_file = g_strdup(optarg);
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
	break;
#ifdef HAVE_LIBPCAP
      /* This is a hidden option supporting Sync mode, so we don't set
       * the error flags for the user in the non-libpcap case.
       */
      case 'W':        /* Write to capture file FD xxx */
        cfile.save_file_fd = atoi(optarg);
	break;
#endif

#ifdef _WIN32
#ifdef HAVE_LIBPCAP
      /* Hidden option supporting Sync mode */
      case 'Z':        /* Write to pipe FD XXX */
        /* associate stdout with pipe */
        i = atoi(optarg);
        if (dup2(i, 1) < 0) {
          fprintf(stderr, "Unable to dup pipe handle\n");
          exit(1);
        }
        break;
#endif /* HAVE_LIBPCAP */
#endif /* _WIN32 */

      default:
      case '?':        /* Bad flag - print usage message */
        arg_error = TRUE;
        break;
    }
  }
  argc -= optind;
  argv += optind;
  if (argc >= 1) {
    if (cf_name != NULL) {
      /*
       * Input file name specified with "-r" *and* specified as a regular
       * command-line argument.
       */
      arg_error = TRUE;
    } else {
      /*
       * Input file name not specified with "-r", and a command-line argument
       * was specified; treat it as the input file name.
       *
       * Yes, this is different from tethereal, where non-flag command-line
       * arguments are a filter, but this works better on GUI desktops
       * where a command can be specified to be run to open a particular
       * file - yes, you could have "-r" as the last part of the command,
       * but that's a bit ugly.
       */
      cf_name = g_strdup(argv[0]);
    }
    argc--;
    argv++;
  }

  if (argc != 0) {
    /*
     * Extra command line arguments were specified; complain.
     */
    fprintf(stderr, "Invalid argument: %s\n", argv[0]);
    arg_error = TRUE;
  }
  if (arg_error) {
    print_usage(FALSE);
    exit(1);
  }

#ifdef HAVE_LIBPCAP
  if (capture_opts.ringbuffer_on) {
    /* Ring buffer works only under certain conditions:
       a) ring buffer does not work with temporary files;
       b) sync_mode and capture_opts.ringbuffer_on are mutually exclusive -
          sync_mode takes precedence;
       c) it makes no sense to enable the ring buffer if the maximum
          file size is set to "infinite". */
    if (cfile.save_file == NULL) {
      fprintf(stderr, "ethereal: Ring buffer requested, but capture isn't being saved to a permanent file.\n");
      capture_opts.ringbuffer_on = FALSE;
    }
    if (capture_opts.sync_mode) {
      fprintf(stderr, "ethereal: Ring buffer requested, but an \"Update list of packets in real time\" capture is being done.\n");
      capture_opts.ringbuffer_on = FALSE;
    }
    if (!capture_opts.has_autostop_filesize) {
      fprintf(stderr, "ethereal: Ring buffer requested, but no maximum capture file size was specified.\n");
      capture_opts.ringbuffer_on = FALSE;
    }
  }
#endif

#ifdef WIN32
  /* Load wpcap if possible */
  load_wpcap();

  /* Start windows sockets */
  WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
#endif

  /* Notify all registered modules that have had any of their preferences
     changed either from one of the preferences file or from the command
     line that their preferences have changed. */
  prefs_apply_all();

#ifndef HAVE_LIBPCAP
  if (capture_option_specified)
    fprintf(stderr, "This version of Ethereal was not built with support for capturing packets.\n");
#endif
#ifdef HAVE_LIBPCAP
  if (start_capture) {
    /* We're supposed to do a live capture; did the user specify an interface
       to use? */
    if (cfile.iface == NULL) {
      /* No - is a default specified in the preferences file? */
      if (prefs->capture_device != NULL) {
          /* Yes - use it. */
          cfile.iface = g_strdup(prefs->capture_device);
      } else {
        /* No - pick the first one from the list of interfaces. */
        if_list = get_interface_list(&err, err_str);
        if (if_list == NULL) {
          switch (err) {
  
          case CANT_GET_INTERFACE_LIST:
              fprintf(stderr, "ethereal: Can't get list of interfaces: %s\n",
  			err_str);
              break;
  
          case NO_INTERFACES_FOUND:
              fprintf(stderr, "ethereal: There are no interfaces on which a capture can be done\n");
              break;
          }
          exit(2);
        }
        cfile.iface = g_strdup(if_list->data);	/* first interface */
        free_interface_list(if_list);
      }
    }
  }
  if (capture_child) {
    if (cfile.save_file_fd == -1) {
      /* XXX - send this to the standard output as something our parent
         should put in an error message box? */
      fprintf(stderr, "%s: \"-W\" flag not specified\n", CHILD_NAME);
      exit(1);
    }
  }
#endif

  /* Build the column format array */  
  col_init(&cfile.cinfo, prefs->num_cols);
  for (i = 0; i < cfile.cinfo.num_cols; i++) {
    cfile.cinfo.col_fmt[i] = get_column_format(i);
    cfile.cinfo.col_title[i] = g_strdup(get_column_title(i));
    cfile.cinfo.fmt_matx[i] = (gboolean *) g_malloc0(sizeof(gboolean) *
      NUM_COL_FMTS);
    get_column_format_matches(cfile.cinfo.fmt_matx[i], cfile.cinfo.col_fmt[i]);
    cfile.cinfo.col_data[i] = NULL;
    if (cfile.cinfo.col_fmt[i] == COL_INFO)
      cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_INFO_LEN);
    else
      cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
    cfile.cinfo.col_expr[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
    cfile.cinfo.col_expr_val[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
  }

#ifdef HAVE_LIBPCAP
  if (capture_opts.has_snaplen) {
    if (capture_opts.snaplen < 1)
      capture_opts.snaplen = WTAP_MAX_PACKET_SIZE;
    else if (capture_opts.snaplen < MIN_PACKET_SIZE)
      capture_opts.snaplen = MIN_PACKET_SIZE;
  }
  
  /* Check the value range of the ringbuffer_num_files parameter */
  if (capture_opts.ringbuffer_num_files < RINGBUFFER_MIN_NUM_FILES)
    capture_opts.ringbuffer_num_files = RINGBUFFER_MIN_NUM_FILES;
  else if (capture_opts.ringbuffer_num_files > RINGBUFFER_MAX_NUM_FILES)
    capture_opts.ringbuffer_num_files = RINGBUFFER_MAX_NUM_FILES;
#endif
  
  rc_file = get_persconffile_path(RC_FILE, FALSE);
  gtk_rc_parse(rc_file);

  /* Try to load the regular and boldface fixed-width fonts */
  bold_font_name = boldify(prefs->gui_font_name);
  m_r_font = gdk_font_load(prefs->gui_font_name);
  m_b_font = gdk_font_load(bold_font_name);
  if (m_r_font == NULL || m_b_font == NULL) {
    /* XXX - pop this up as a dialog box? no */
    if (m_r_font == NULL) {
#ifdef HAVE_LIBPCAP
      if (!capture_child)
#endif
	fprintf(stderr, "ethereal: Warning: font %s not found - defaulting to 6x13 and 6x13bold\n",
		prefs->gui_font_name);
    } else {
      gdk_font_unref(m_r_font);
    }
    if (m_b_font == NULL) {
#ifdef HAVE_LIBPCAP
      if (!capture_child)
#endif
	fprintf(stderr, "ethereal: Warning: font %s not found - defaulting to 6x13 and 6x13bold\n",
		bold_font_name);
    } else {
      gdk_font_unref(m_b_font);
    }
    g_free(bold_font_name);
    if ((m_r_font = gdk_font_load("6x13")) == NULL) {
      fprintf(stderr, "ethereal: Error: font 6x13 not found\n");
      exit(1);
    }
    if ((m_b_font = gdk_font_load("6x13bold")) == NULL) {
      fprintf(stderr, "ethereal: Error: font 6x13bold not found\n");
      exit(1);
    }
    g_free(prefs->gui_font_name);
    prefs->gui_font_name = g_strdup("6x13");
  }

  /* Call this for the side-effects that set_fonts() produces */
  set_fonts(m_r_font, m_b_font);


#ifdef HAVE_LIBPCAP
  /* Is this a "child" ethereal, which is only supposed to pop up a
     capture box to let us stop the capture, and run a capture
     to a file that our parent will read? */
  if (!capture_child) {
#endif
    /* No.  Pop up the main window, and read in a capture file if
       we were told to. */

    create_main_window(pl_size, tv_size, bv_size, prefs);
    set_menus_for_capture_file(FALSE);

    colfilter_init();

    /* If we were given the name of a capture file, read it in now;
       we defer it until now, so that, if we can't open it, and pop
       up an alert box, the alert box is more likely to come up on
       top of the main window - but before the preference-file-error
       alert box, so, if we get one of those, it's more likely to come
       up on top of us. */
    if (cf_name) {
      if (rfilter != NULL) {
        if (!dfilter_compile(rfilter, &rfcode)) {
          simple_dialog(ESD_TYPE_CRIT, NULL, dfilter_error_msg);
          rfilter_parse_failed = TRUE;
        }
      }
      if (!rfilter_parse_failed) {
        if ((err = open_cap_file(cf_name, FALSE, &cfile)) == 0) {
          /* "open_cap_file()" succeeded, so it closed the previous
	     capture file, and thus destroyed any previous read filter
	     attached to "cf". */
          cfile.rfcode = rfcode;
          switch (read_cap_file(&cfile, &err)) {

          case READ_SUCCESS:
          case READ_ERROR:
            /* Just because we got an error, that doesn't mean we were unable
               to read any of the file; we handle what we could get from the
               file. */
            break;

          case READ_ABORTED:
            /* Exit now. */
            gtk_exit(0);
            break;
          }
          /* Save the name of the containing directory specified in the
	     path name, if any; we can write over cf_name, which is a
             good thing, given that "get_dirname()" does write over its
             argument. */
          s = get_dirname(cf_name);
	  set_last_open_dir(s);
        } else {
          if (rfcode != NULL)
            dfilter_free(rfcode);
          cfile.rfcode = NULL;
        }
      }
    }
#ifdef HAVE_LIBPCAP
  }
#endif

  /* If the global preferences file exists but we failed to open it,
     pop up an alert box; we defer that until now, so that the alert
     box is more likely to come up on top of the main window. */
  if (gpf_path != NULL) {
      simple_dialog(ESD_TYPE_WARN, NULL,
        "Could not open global preferences file\n\"%s\": %s.", gpf_path,
        strerror(gpf_open_errno));
  }

  /* If the user's preferences file exists but we failed to open it,
     pop up an alert box; we defer that until now, so that the alert
     box is more likely to come up on top of the main window. */
  if (pf_path != NULL) {
      simple_dialog(ESD_TYPE_WARN, NULL,
        "Could not open your preferences file\n\"%s\": %s.", pf_path,
        strerror(pf_open_errno));
      g_free(pf_path);
      pf_path = NULL;
  }

  /* If the user's capture filter file exists but we failed to open it,
     pop up an alert box; we defer that until now, so that the alert
     box is more likely to come up on top of the main window. */
  if (cf_path != NULL) {
      simple_dialog(ESD_TYPE_WARN, NULL,
        "Could not open your capture filter file\n\"%s\": %s.", cf_path,
        strerror(cf_open_errno));
      g_free(cf_path);
  }

  /* If the user's display filter file exists but we failed to open it,
     pop up an alert box; we defer that until now, so that the alert
     box is more likely to come up on top of the main window. */
  if (df_path != NULL) {
      simple_dialog(ESD_TYPE_WARN, NULL,
        "Could not open your display filter file\n\"%s\": %s.", df_path,
        strerror(df_open_errno));
      g_free(df_path);
  }

#ifdef HAVE_LIBPCAP
  if (capture_child) {
    /* This is the child process for a sync mode or fork mode capture,
       so just do the low-level work of a capture - don't create
       a temporary file and fork off *another* child process (so don't
       call "do_capture()"). */

       /* XXX - hand these stats to the parent process */
       capture(&stats_known, &stats);

       /* The capture is done; there's nothing more for us to do. */
       gtk_exit(0);
  } else {
    if (start_capture) {
      /* "-k" was specified; start a capture. */
      do_capture(save_file);
    }
    else {
      set_menus_for_capture_in_progress(FALSE);
    }
  }
#else
  set_menus_for_capture_in_progress(FALSE);
#endif

  gtk_main();

	/* Try to save our geometry.  GTK+ provides two routines to get a
		 window's position relative to the X root window.  If I understand the
		 documentation correctly, gdk_window_get_deskrelative_origin applies
		 mainly to Enlightenment and gdk_window_get_root_origin applies for
		 all other WMs.
	   
	   The code below tries both routines, and picks the one that returns
	   the upper-left-most coordinates.
	   
	   More info at:

	   http://mail.gnome.org/archives/gtk-devel-list/2001-March/msg00289.html
	   http://www.gtk.org/faq/#AEN600 */

	/* Re-read our saved preferences. */
	/* XXX - Move all of this into a separate function? */
	prefs = read_prefs(&gpf_open_errno, &gpf_path, &pf_open_errno, &pf_path);

	if (pf_path == NULL) {
 		if (prefs->gui_geometry_save_position) {
			if (top_level->window != NULL) {
				gdk_window_get_root_origin(top_level->window, &root_x, &root_y);
				if (gdk_window_get_deskrelative_origin(top_level->window,
							&desk_x, &desk_y)) {
					if (desk_x <= root_x && desk_y <= root_y) {
						root_x = desk_x;
						root_y = desk_y;
					}
				}
			}
			if (prefs->gui_geometry_main_x != root_x) {
				prefs->gui_geometry_main_x = root_x;
				prefs_write_needed = TRUE;
			}
			if (prefs->gui_geometry_main_y != root_y) {
				prefs->gui_geometry_main_y = root_y;
				prefs_write_needed = TRUE;
			}
		}
		
		if (prefs->gui_geometry_save_size) {
			if (top_level->window != NULL) {
				/* XXX - Is this the "approved" method? */
				gdk_window_get_size(top_level->window, &top_width, &top_height);
			}
			if (prefs->gui_geometry_main_width != top_width) {
				prefs->gui_geometry_main_width = top_width;
				prefs_write_needed = TRUE;
			}
			if (prefs->gui_geometry_main_height != top_height) {
				prefs->gui_geometry_main_height = top_height;
				prefs_write_needed = TRUE;
			}
		}
		
		if (prefs_write_needed) {
			write_prefs(&pf_path);
		}
	} else {
		/* Ignore errors silently */
		g_free(pf_path);
	}
	
  epan_cleanup();
  g_free(rc_file);

#ifdef WIN32
  /* Shutdown windows sockets */
  WSACleanup();

  /* For some unknown reason, the "atexit()" call in "create_console()"
     doesn't arrange that "destroy_console()" be called when we exit,
     so we call it here if a console was created. */
  if (console_was_created)
    destroy_console();
#endif

  gtk_exit(0);

  /* This isn't reached, but we need it to keep GCC from complaining
     that "main()" returns without returning a value - it knows that
     "exit()" never returns, but it doesn't know that "gtk_exit()"
     doesn't, as GTK+ doesn't declare it with the attribute
     "noreturn". */
  return 0;	/* not reached */
}

#ifdef WIN32

/* We build this as a GUI subsystem application on Win32, so
   "WinMain()", not "main()", gets called.

   Hack shamelessly stolen from the Win32 port of the GIMP. */
#ifdef __GNUC__
#define _stdcall  __attribute__((stdcall))
#endif

int _stdcall
WinMain (struct HINSTANCE__ *hInstance,
	 struct HINSTANCE__ *hPrevInstance,
	 char               *lpszCmdLine,
	 int                 nCmdShow)
{
  has_no_console = TRUE;
  return main (__argc, __argv);
}

/*
 * If this application has no console window to which its standard output
 * would go, create one.
 */
static void
create_console(void)
{
  if (has_no_console) {
    /* We have no console to which to print the version string, so
       create one and make it the standard input, output, and error. */
    if (!AllocConsole())
      return;   /* couldn't create console */
    freopen("CONIN$", "r", stdin);
    freopen("CONOUT$", "w", stdout);
    freopen("CONOUT$", "w", stderr);

    /* Well, we have a console now. */
    has_no_console = FALSE;
    console_was_created = TRUE;

    /* Now register "destroy_console()" as a routine to be called just
       before the application exits, so that we can destroy the console
       after the user has typed a key (so that the console doesn't just
       disappear out from under them, giving the user no chance to see
       the message(s) we put in there). */
    atexit(destroy_console);
  }
}

static void
destroy_console(void)
{
  printf("\n\nPress any key to exit\n");
  _getch();
  FreeConsole();
}

/* This routine should not be necessary, at least as I read the GLib
   source code, as it looks as if GLib is, on Win32, *supposed* to
   create a console window into which to display its output.

   That doesn't happen, however.  I suspect there's something completely
   broken about that code in GLib-for-Win32, and that it may be related
   to the breakage that forces us to just call "printf()" on the message
   rather than passing the message on to "g_log_default_handler()"
   (which is the routine that does the aforementioned non-functional
   console window creation). */
static void
console_log_handler(const char *log_domain, GLogLevelFlags log_level,
		    const char *message, gpointer user_data)
{
  create_console();
  if (console_was_created) {
    /* For some unknown reason, the above doesn't appear to actually cause
       anything to be sent to the standard output, so we'll just splat the
       message out directly, just to make sure it gets out. */
    printf("%s\n", message);
  } else
    g_log_default_handler(log_domain, log_level, message, user_data);
}
#endif

/* Given a font name, construct the name of the next heavier version of
   that font. */

#define	XLFD_WEIGHT	3	/* index of the "weight" field */

/* Map from a given weight to the appropriate weight for the "bold"
   version of a font.
   XXX - the XLFD says these strings shouldn't be used for font matching;
   can we get the weight, as a number, from GDK, and ask GDK to find us
   a font just like the given font, but with the appropriate higher
   weight? */
static const struct {
	char	*light;
	char	*heavier;
} weight_map[] = {
	{ "ultralight", "light" },
	{ "extralight", "semilight" },
	{ "light",      "medium" },
	{ "semilight",  "semibold" },
	{ "medium",     "bold" },
	{ "normal",     "bold" },
	{ "semibold",   "extrabold" },
	{ "bold",       "ultrabold" }
};
#define	N_WEIGHTS	(sizeof weight_map / sizeof weight_map[0])
	
char *
boldify(const char *font_name)
{
	char *bold_font_name;
	gchar **xlfd_tokens;
	unsigned int i;

	/* Is this an XLFD font?  If it begins with "-", yes, otherwise no. */
	if (font_name[0] == '-') {
		xlfd_tokens = g_strsplit(font_name, "-", XLFD_WEIGHT+1);

		/*
		 * Make sure we *have* a weight (this might not be a valid
		 * XLFD font name).
		 */
		for (i = 0; i < XLFD_WEIGHT+1; i++) {
			if (xlfd_tokens[i] == NULL) {
				/*
				 * We don't, so treat this as a non-XLFD
				 * font name.
				 */
				goto not_xlfd;
			}
		}
		for (i = 0; i < N_WEIGHTS; i++) {
			if (strcmp(xlfd_tokens[XLFD_WEIGHT],
			    weight_map[i].light) == 0) {
				g_free(xlfd_tokens[XLFD_WEIGHT]);
				xlfd_tokens[XLFD_WEIGHT] =
				    g_strdup(weight_map[i].heavier);
				break;
			}
		}
		bold_font_name = g_strjoinv("-", xlfd_tokens);
		g_strfreev(xlfd_tokens);
		return bold_font_name;
	}

not_xlfd:
	/*
	 * This isn't an XLFD font name; just append "bold" to the name
	 * of the font.
	 */
	bold_font_name = g_strconcat(font_name, "bold", NULL);
	return bold_font_name;
}


static void
create_main_window (gint pl_size, gint tv_size, gint bv_size, e_prefs *prefs)
{
  GtkWidget           *main_vbox, *menubar, *u_pane, *l_pane,
                      *stat_hbox, *column_lb,
                      *filter_bt, *filter_cm, *filter_te,
                      *filter_apply,
                      *filter_reset;
  GList               *filter_list = NULL;
  GtkAccelGroup       *accel;
  GtkStyle            *win_style;
  GdkBitmap           *ascend_bm, *descend_bm;
  GdkPixmap           *ascend_pm, *descend_pm;
  column_arrows       *col_arrows;
  int			i;
  /* Display filter construct dialog has an Apply button, and "OK" not
     only sets our text widget, it activates it (i.e., it causes us to
     filter the capture). */
  static construct_args_t args = {
  	"Ethereal: Display Filter",
  	TRUE,
  	TRUE
  };
  
  /* Main window */  
  top_level = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  gtk_widget_set_name(top_level, "main window");
  gtk_signal_connect(GTK_OBJECT(top_level), "delete_event", 
    GTK_SIGNAL_FUNC(main_window_delete_event_cb), NULL);
  gtk_signal_connect (GTK_OBJECT (top_level), "realize",
    GTK_SIGNAL_FUNC (window_icon_realize_cb), NULL);
  gtk_window_set_title(GTK_WINDOW(top_level), "The Ethereal Network Analyzer");
  if (prefs->gui_geometry_save_position) {
    gtk_widget_set_uposition(GTK_WIDGET(top_level),
      prefs->gui_geometry_main_x, prefs->gui_geometry_main_y);
  }
  if (prefs->gui_geometry_save_size) {
    gtk_widget_set_usize(GTK_WIDGET(top_level),
      prefs->gui_geometry_main_width, prefs->gui_geometry_main_height);
  } else {
    gtk_widget_set_usize(GTK_WIDGET(top_level), DEF_WIDTH, -1);
  }
  gtk_window_set_policy(GTK_WINDOW(top_level), TRUE, TRUE, FALSE);

  /* Container for menu bar, paned windows and progress/info box */
  main_vbox = gtk_vbox_new(FALSE, 1);
  gtk_container_border_width(GTK_CONTAINER(main_vbox), 1);
  gtk_container_add(GTK_CONTAINER(top_level), main_vbox);
  gtk_widget_show(main_vbox);

  /* Menu bar */
  get_main_menu(&menubar, &accel);
  gtk_window_add_accel_group(GTK_WINDOW(top_level), accel);
  gtk_box_pack_start(GTK_BOX(main_vbox), menubar, FALSE, TRUE, 0);
  gtk_widget_show(menubar);

  /* Panes for the packet list, tree, and byte view */
  u_pane = gtk_vpaned_new();
  gtk_paned_gutter_size(GTK_PANED(u_pane), (GTK_PANED(u_pane))->handle_size);
  l_pane = gtk_vpaned_new();
  gtk_paned_gutter_size(GTK_PANED(l_pane), (GTK_PANED(l_pane))->handle_size);
  gtk_container_add(GTK_CONTAINER(main_vbox), u_pane);
  gtk_widget_show(l_pane);
  gtk_paned_add2(GTK_PANED(u_pane), l_pane);
  gtk_widget_show(u_pane);

  /* Packet list */
  pkt_scrollw = scrolled_window_new(NULL, NULL);
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW(pkt_scrollw),
    GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
  gtk_widget_show(pkt_scrollw);
  gtk_paned_add1(GTK_PANED(u_pane), pkt_scrollw);

  packet_list = gtk_clist_new(cfile.cinfo.num_cols);
  /* Column titles are filled in below */
  gtk_container_add(GTK_CONTAINER(pkt_scrollw), packet_list);

  col_arrows = (column_arrows *) g_malloc(sizeof(column_arrows) * cfile.cinfo.num_cols);
  
  set_plist_sel_browse(prefs->gui_plist_sel_browse);
  set_plist_font(m_r_font);
  gtk_widget_set_name(packet_list, "packet list");
  gtk_signal_connect (GTK_OBJECT (packet_list), "click_column",
    GTK_SIGNAL_FUNC(packet_list_click_column_cb), col_arrows);
  gtk_signal_connect(GTK_OBJECT(packet_list), "select_row",
    GTK_SIGNAL_FUNC(packet_list_select_cb), NULL);
  gtk_signal_connect(GTK_OBJECT(packet_list), "unselect_row",
    GTK_SIGNAL_FUNC(packet_list_unselect_cb), NULL);
  for (i = 0; i < cfile.cinfo.num_cols; i++) {
    if (get_column_resize_type(cfile.cinfo.col_fmt[i]) != RESIZE_MANUAL)
      gtk_clist_set_column_auto_resize(GTK_CLIST(packet_list), i, TRUE);

    /* Right-justify the packet number column. */
    if (cfile.cinfo.col_fmt[i] == COL_NUMBER)
      gtk_clist_set_column_justification(GTK_CLIST(packet_list), i, 
        GTK_JUSTIFY_RIGHT);
  }
  gtk_widget_set_usize(packet_list, -1, pl_size);
  gtk_signal_connect(GTK_OBJECT(packet_list), "button_press_event",
		     GTK_SIGNAL_FUNC(popup_menu_handler), 
		     gtk_object_get_data(GTK_OBJECT(popup_menu_object), PM_PACKET_LIST_KEY));
  gtk_signal_connect(GTK_OBJECT(packet_list), "button_press_event",
		     GTK_SIGNAL_FUNC(packet_list_button_pressed_cb), NULL);
  gtk_clist_set_compare_func(GTK_CLIST(packet_list), packet_list_compare);
  gtk_widget_show(packet_list);

  /* Tree view */
  item_style = gtk_style_new();
  gdk_font_unref(item_style->font);
  item_style->font = m_r_font;
  create_tree_view(tv_size, prefs, l_pane, &tv_scrollw, &tree_view);
  gtk_signal_connect(GTK_OBJECT(tree_view), "tree-select-row",
    GTK_SIGNAL_FUNC(tree_view_select_row_cb), NULL);
  gtk_signal_connect(GTK_OBJECT(tree_view), "tree-unselect-row",
    GTK_SIGNAL_FUNC(tree_view_unselect_row_cb), NULL);
  gtk_signal_connect(GTK_OBJECT(tree_view), "button_press_event",
		     GTK_SIGNAL_FUNC(popup_menu_handler),
		     gtk_object_get_data(GTK_OBJECT(popup_menu_object), PM_TREE_VIEW_KEY));
  gtk_widget_show(tree_view);

  /* Byte view. */
  byte_nb_ptr = create_byte_view(bv_size, l_pane);

  gtk_signal_connect(GTK_OBJECT(byte_nb_ptr), "button_press_event",
		     GTK_SIGNAL_FUNC(popup_menu_handler),
		     gtk_object_get_data(GTK_OBJECT(popup_menu_object), PM_HEXDUMP_KEY));

  /* Filter/info box */
  stat_hbox = gtk_hbox_new(FALSE, 1);
  gtk_container_border_width(GTK_CONTAINER(stat_hbox), 0);
  gtk_box_pack_start(GTK_BOX(main_vbox), stat_hbox, FALSE, TRUE, 0);
  gtk_widget_show(stat_hbox);

  filter_bt = gtk_button_new_with_label("Filter:");
  gtk_signal_connect(GTK_OBJECT(filter_bt), "clicked",
    GTK_SIGNAL_FUNC(display_filter_construct_cb), &args);
  gtk_box_pack_start(GTK_BOX(stat_hbox), filter_bt, FALSE, TRUE, 0);
  gtk_widget_show(filter_bt);
  
  filter_cm = gtk_combo_new();
  filter_list = g_list_append (filter_list, "");
  gtk_combo_set_popdown_strings(GTK_COMBO(filter_cm), filter_list);
  gtk_combo_disable_activate(GTK_COMBO(filter_cm));
  gtk_combo_set_case_sensitive(GTK_COMBO(filter_cm), TRUE);
  gtk_object_set_data(GTK_OBJECT(filter_cm), E_DFILTER_FL_KEY, filter_list);
  filter_te = GTK_COMBO(filter_cm)->entry;
  gtk_object_set_data(GTK_OBJECT(filter_bt), E_FILT_TE_PTR_KEY, filter_te);
  gtk_object_set_data(GTK_OBJECT(filter_te), E_DFILTER_CM_KEY, filter_cm);
  gtk_box_pack_start(GTK_BOX(stat_hbox), filter_cm, TRUE, TRUE, 3);
  gtk_signal_connect(GTK_OBJECT(filter_te), "activate",
    GTK_SIGNAL_FUNC(filter_activate_cb), filter_te);
  gtk_widget_show(filter_cm);

  filter_reset = gtk_button_new_with_label("Reset");
  gtk_object_set_data(GTK_OBJECT(filter_reset), E_DFILTER_TE_KEY, filter_te);
  gtk_signal_connect(GTK_OBJECT(filter_reset), "clicked",
		     GTK_SIGNAL_FUNC(filter_reset_cb), NULL);
  gtk_box_pack_start(GTK_BOX(stat_hbox), filter_reset, FALSE, TRUE, 1);
  gtk_widget_show(filter_reset);

  filter_apply = gtk_button_new_with_label("Apply");
  gtk_object_set_data(GTK_OBJECT(filter_apply), E_DFILTER_CM_KEY, filter_cm);
  gtk_signal_connect(GTK_OBJECT(filter_apply), "clicked",
                     GTK_SIGNAL_FUNC(filter_activate_cb), filter_te);
  gtk_box_pack_start(GTK_BOX(stat_hbox), filter_apply, FALSE, TRUE, 1);
  gtk_widget_show(filter_apply);

  /* Sets the text entry widget pointer as the E_DILTER_TE_KEY data
   * of any widget that ends up calling a callback which needs
   * that text entry pointer */
  set_menu_object_data("/File/Open...", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/File/Reload", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/Edit/Filters...", E_FILT_TE_PTR_KEY, filter_te);
  set_menu_object_data("/Tools/Follow TCP Stream", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/Display/Match/Selected", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/Display/Match/Not Selected", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/Display/Match/And Selected", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/Display/Match/Or Selected", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/Display/Match/And Not Selected", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/Display/Match/Or Not Selected", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/Display/Prepare/Selected", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/Display/Prepare/Not Selected", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/Display/Prepare/And Selected", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/Display/Prepare/Or Selected", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/Display/Prepare/And Not Selected", E_DFILTER_TE_KEY, filter_te);
  set_menu_object_data("/Display/Prepare/Or Not Selected", E_DFILTER_TE_KEY, filter_te);
  gtk_object_set_data(GTK_OBJECT(popup_menu_object), E_DFILTER_TE_KEY, filter_te);
  gtk_object_set_data(GTK_OBJECT(popup_menu_object), E_MPACKET_LIST_KEY, packet_list);

  info_bar = gtk_statusbar_new();
  main_ctx = gtk_statusbar_get_context_id(GTK_STATUSBAR(info_bar), "main");
  file_ctx = gtk_statusbar_get_context_id(GTK_STATUSBAR(info_bar), "file");
  help_ctx = gtk_statusbar_get_context_id(GTK_STATUSBAR(info_bar), "help");
  gtk_statusbar_push(GTK_STATUSBAR(info_bar), main_ctx, DEF_READY_MESSAGE);
  gtk_box_pack_start(GTK_BOX(stat_hbox), info_bar, TRUE, TRUE, 0);
  gtk_widget_show(info_bar);

  gtk_widget_show(top_level);

  /* Fill in column titles.  This must be done after the top level window
     is displayed. */
  win_style = gtk_widget_get_style(top_level);
  ascend_pm = gdk_pixmap_create_from_xpm_d(top_level->window, &ascend_bm,
  	&win_style->bg[GTK_STATE_NORMAL], (gchar **)clist_ascend_xpm);
  descend_pm = gdk_pixmap_create_from_xpm_d(top_level->window, &descend_bm,
  	&win_style->bg[GTK_STATE_NORMAL], (gchar **)clist_descend_xpm);
  for (i = 0; i < cfile.cinfo.num_cols; i++) {
    col_arrows[i].table = gtk_table_new(2, 2, FALSE);
    gtk_table_set_col_spacings(GTK_TABLE(col_arrows[i].table), 5);
    column_lb = gtk_label_new(cfile.cinfo.col_title[i]);
    gtk_table_attach(GTK_TABLE(col_arrows[i].table), column_lb, 0, 1, 0, 2,
    	GTK_SHRINK, GTK_SHRINK, 0, 0);
    gtk_widget_show(column_lb);
    col_arrows[i].ascend_pm = gtk_pixmap_new(ascend_pm, ascend_bm);
    gtk_table_attach(GTK_TABLE(col_arrows[i].table), col_arrows[i].ascend_pm, 
    	1, 2, 1, 2, GTK_SHRINK, GTK_SHRINK, 0, 0);
    if (i == 0) {
      gtk_widget_show(col_arrows[i].ascend_pm);
    }
    col_arrows[i].descend_pm = gtk_pixmap_new(descend_pm, descend_bm);
    gtk_table_attach(GTK_TABLE(col_arrows[i].table), col_arrows[i].descend_pm,
    	1, 2, 0, 1, GTK_SHRINK, GTK_SHRINK, 0, 0);
    gtk_clist_set_column_widget(GTK_CLIST(packet_list), i, col_arrows[i].table);
    gtk_widget_show(col_arrows[i].table);
  }
  gtk_clist_column_titles_show(GTK_CLIST(packet_list));
}


void
set_last_open_dir(char *dirname)
{
	int len;

	if (last_open_dir) {
		g_free(last_open_dir);
	}

	if (dirname) {
		len = strlen(dirname);
		if (dirname[len-1] != G_DIR_SEPARATOR) {
			last_open_dir = g_strconcat(dirname, G_DIR_SEPARATOR_S,
				NULL);
		}
	}
	else {
		last_open_dir = NULL;
	}
}