summaryrefslogtreecommitdiffstats
path: root/tools/syslogd.c
blob: ad28ff221238d1c2301a1dae588de717bf15cc4e (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
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
/**
 * \brief This is the main file of the rsyslogd daemon.
 *
 * Please visit the rsyslog project at
 *
 * http://www.rsyslog.com
 *
 * to learn more about it and discuss any questions you may have.
 *
 * rsyslog had initially been forked from the sysklogd project.
 * I would like to express my thanks to the developers of the sysklogd
 * package - without it, I would have had a much harder start...
 *
 * Please note that while rsyslog started from the sysklogd code base,
 * it nowadays has almost nothing left in common with it. Allmost all
 * parts of the code have been rewritten.
 *
 * This Project was intiated and is maintained by
 * Rainer Gerhards <rgerhards@hq.adiscon.com>. See
 * AUTHORS to learn who helped make it become a reality.
 *
 * If you have questions about rsyslogd in general, please email
 * info@adiscon.com. To learn more about rsyslogd, please visit
 * http://www.rsyslog.com.
 *
 * \author Rainer Gerhards <rgerhards@adiscon.com>
 * \date 2003-10-17
 *       Some initial modifications on the sysklogd package to support
 *       liblogging. These have actually not yet been merged to the
 *       source you see currently (but they hopefully will)
 *
 * \date 2004-10-28
 *       Restarted the modifications of sysklogd. This time, we
 *       focus on a simpler approach first. The initial goal is to
 *       provide MySQL database support (so that syslogd can log
 *       to the database).
 *
 * rsyslog - An Enhanced syslogd Replacement.
 * Copyright 2003-2008 Rainer Gerhards and Adiscon GmbH.
 *
 * This file is part of rsyslog.
 *
 * Rsyslog 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 3 of the License, or
 * (at your option) any later version.
 *
 * Rsyslog 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 Rsyslog.  If not, see <http://www.gnu.org/licenses/>.
 *
 * A copy of the GPL can be found in the file "COPYING" in this distribution.
 */
#include "config.h"
#include "rsyslog.h"

/* change the following setting to e.g. 32768 if you would like to
 * support large message sizes for IHE (32k is the current maximum
 * needed for IHE). I was initially tempted to increase it to 32k,
 * but there is a large memory footprint with the current
 * implementation in rsyslog. This will change as the processing
 * changes, but I have re-set it to 1k, because the vast majority
 * of messages is below that and the memory savings is huge, at
 * least compared to the overall memory footprint.
 *
 * If you intend to receive Windows Event Log data (e.g. via
 * EventReporter - www.eventreporter.com), you might want to 
 * increase this number to an even higher value, as event
 * log messages can be very lengthy.
 * rgerhards, 2005-07-05
 *
 * during my recent testing, it showed that 4k seems to be
 * the typical maximum for UDP based syslog. This is a IP stack
 * restriction. Not always ... but very often. If you go beyond
 * that value, be sure to test that rsyslogd actually does what
 * you think it should do ;) Also, it is a good idea to check the
 * doc set for anything on IHE - it most probably has information on
 * message sizes.
 * rgerhards, 2005-08-05
 * 
 * I have increased the default message size to 2048 to be in sync
 * with recent IETF syslog standardization efforts.
 * rgerhards, 2006-11-30
 */
#define DEFUPRI		(LOG_USER|LOG_NOTICE)
#define TIMERINTVL	30		/* interval for checking flush, mark */

#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <stddef.h>
#include <ctype.h>
#include <limits.h>
#define GNU_SOURCE
#include <string.h>
#include <stdarg.h>
#include <time.h>
#include <assert.h>
#include <libgen.h>

#ifdef	__sun
#	include <errno.h>
#else
#	include <sys/errno.h>
#endif
#include <sys/ioctl.h>
#include <sys/wait.h>
#include <sys/file.h>

#if HAVE_SYS_TIMESPEC_H
# include <sys/timespec.h>
#endif

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

#include <signal.h>

#if HAVE_PATHS_H
#include <paths.h>
#endif

#ifdef USE_NETZIP
#include <zlib.h>
#endif

#include <netdb.h>

#include "pidfile.h"
#include "srUtils.h"
#include "stringbuf.h"
#include "syslogd-types.h"
#include "template.h"
#include "outchannel.h"
#include "syslogd.h"

#include "msg.h"
#include "modules.h"
#include "action.h"
#include "iminternal.h"
#include "cfsysline.h"
#include "omshell.h"
#include "omusrmsg.h"
#include "omfwd.h"
#include "omfile.h"
#include "omdiscard.h"
#include "threads.h"
#include "queue.h"
#include "stream.h"
#include "conf.h"
#include "vm.h"
#include "errmsg.h"
#include "datetime.h"
#include "sysvar.h"

/* definitions for objects we access */
DEFobjCurrIf(obj)
DEFobjCurrIf(glbl)
DEFobjCurrIf(datetime)
DEFobjCurrIf(conf)
DEFobjCurrIf(expr)
DEFobjCurrIf(vm)
DEFobjCurrIf(var)
DEFobjCurrIf(module)
DEFobjCurrIf(errmsg)
DEFobjCurrIf(net) /* TODO: make go away! */


/* forward definitions */
static rsRetVal GlobalClassExit(void);

/* We define our own set of syslog defintions so that we
 * do not need to rely on (possibly different) implementations.
 * 2007-07-19 rgerhards
 */
/* missing definitions for solaris
 * 2006-02-16 Rger
 */
#ifdef __sun
#	define LOG_AUTHPRIV LOG_AUTH
#endif
#define INTERNAL_NOPRI  0x10    /* the "no priority" priority */
#define LOG_FTP         (11<<3) /* ftp daemon */


#ifndef UTMP_FILE
#ifdef UTMP_FILENAME
#define UTMP_FILE UTMP_FILENAME
#else
#ifdef _PATH_UTMP
#define UTMP_FILE _PATH_UTMP
#else
#define UTMP_FILE "/etc/utmp"
#endif
#endif
#endif

#ifndef _PATH_LOGCONF 
#define _PATH_LOGCONF	"/etc/rsyslog.conf"
#endif

#ifndef _PATH_MODDIR
#define _PATH_MODDIR	"/lib/rsyslog/"
#endif

#if defined(SYSLOGD_PIDNAME)
#	undef _PATH_LOGPID
#	if defined(FSSTND)
#		ifdef OS_BSD
#			define _PATH_VARRUN "/var/run/"
#		endif
#		if defined(__sun) || defined(__hpux)
#			define _PATH_VARRUN "/var/run/"
#		endif
#		define _PATH_LOGPID _PATH_VARRUN SYSLOGD_PIDNAME
#	else
#		define _PATH_LOGPID "/etc/" SYSLOGD_PIDNAME
#	endif
#else
#	ifndef _PATH_LOGPID
#		if defined(__sun) || defined(__hpux)
#			define _PATH_VARRUN "/var/run/"
#		endif
#		if defined(FSSTND)
#			define _PATH_LOGPID _PATH_VARRUN "rsyslogd.pid"
#		else
#			define _PATH_LOGPID "/etc/rsyslogd.pid"
#		endif
#	endif
#endif

#ifndef _PATH_DEV
#	define _PATH_DEV	"/dev/"
#endif

#ifndef _PATH_TTY
#define _PATH_TTY	"/dev/tty"
#endif

static uchar	*ConfFile = (uchar*) _PATH_LOGCONF; /* read-only after startup */
static char	*PidFile = _PATH_LOGPID; /* read-only after startup */

static pid_t myPid;	/* our pid for use in self-generated messages, e.g. on startup */
/* mypid is read-only after the initial fork() */
static int restart = 0; /* do restart (config read) - multithread safe */

static int bParseHOSTNAMEandTAG = 1; /* global config var: should the hostname and tag be
                                      * parsed inside message - rgerhards, 2006-03-13 */
static int bFinished = 0;	/* used by termination signal handler, read-only except there
				 * is either 0 or the number of the signal that requested the
 				 * termination.
				 */
static int iConfigVerify = 0;	/* is this just a config verify run? */

/* Intervals at which we flush out "message repeated" messages,
 * in seconds after previous message is logged.  After each flush,
 * we move to the next interval until we reach the largest.
 * TODO: this shall go into action object! -- rgerhards, 2008-01-29
 */
int	repeatinterval[2] = { 30, 60 };	/* # of secs before flush */

#define LIST_DELIMITER	':'		/* delimiter between two hosts */

struct	filed *Files = NULL; /* read-only after init() (but beware of sigusr1!) */

static pid_t ppid; /* This is a quick and dirty hack used for spliting main/startup thread */

typedef struct legacyOptsLL_s {
	uchar *line;
	struct legacyOptsLL_s *next;
} legacyOptsLL_t;
legacyOptsLL_t *pLegacyOptsLL = NULL;

/* global variables for config file state */
static int	bDropTrailingLF = 1; /* drop trailing LF's on reception? */
int	iCompatibilityMode = 0;		/* version we should be compatible with; 0 means sysklogd. It is
					   the default, so if no -c<n> option is given, we make ourselvs
					   as compatible to sysklogd as possible. */
static int	bDebugPrintTemplateList = 1;/* output template list in debug mode? */
static int	bDebugPrintCfSysLineHandlerList = 1;/* output cfsyslinehandler list in debug mode? */
static int	bDebugPrintModuleList = 1;/* output module list in debug mode? */
static uchar	cCCEscapeChar = '\\';/* character to be used to start an escape sequence for control chars */
static int 	bEscapeCCOnRcv = 1; /* escape control characters on reception: 0 - no, 1 - yes */
static int	bErrMsgToStderr = 1; /* print error messages to stderr (in addition to everything else)? */
int 	bReduceRepeatMsgs; /* reduce repeated message - 0 - no, 1 - yes */
int	bActExecWhenPrevSusp; /* execute action only when previous one was suspended? */
int	iActExecOnceInterval = 0; /* execute action once every nn seconds */
/* end global config file state variables */

int	MarkInterval = 20 * 60;	/* interval between marks in seconds - read-only after startup */
int      send_to_all = 0;        /* send message to all IPv4/IPv6 addresses */
static int	NoFork = 0; 	/* don't fork - don't run in daemon mode - read-only after startup */
static int	bHaveMainQueue = 0;/* set to 1 if the main queue - in queueing mode - is available
				 * If the main queue is either not yet ready or not running in 
				 * queueing mode (mode DIRECT!), then this is set to 0.
				 */

extern	int errno;

/* main message queue and its configuration parameters */
static queue_t *pMsgQueue = NULL;				/* the main message queue */
static int iMainMsgQueueSize = 10000;				/* size of the main message queue above */
static int iMainMsgQHighWtrMark = 8000;				/* high water mark for disk-assisted queues */
static int iMainMsgQLowWtrMark = 2000;				/* low water mark for disk-assisted queues */
static int iMainMsgQDiscardMark = 9800;				/* begin to discard messages */
static int iMainMsgQDiscardSeverity = 8;			/* by default, discard nothing to prevent unintentional loss */
static int iMainMsgQueueNumWorkers = 1;				/* number of worker threads for the mm queue above */
static queueType_t MainMsgQueType = QUEUETYPE_FIXED_ARRAY;	/* type of the main message queue above */
static uchar *pszMainMsgQFName = NULL;				/* prefix for the main message queue file */
static int64 iMainMsgQueMaxFileSize = 1024*1024;
static int iMainMsgQPersistUpdCnt = 0;				/* persist queue info every n updates */
static int iMainMsgQtoQShutdown = 0;				/* queue shutdown */ 
static int iMainMsgQtoActShutdown = 1000;			/* action shutdown (in phase 2) */ 
static int iMainMsgQtoEnq = 2000;				/* timeout for queue enque */ 
static int iMainMsgQtoWrkShutdown = 60000;			/* timeout for worker thread shutdown */
static int iMainMsgQWrkMinMsgs = 100;				/* minimum messages per worker needed to start a new one */
static int iMainMsgQDeqSlowdown = 0;				/* dequeue slowdown (simple rate limiting) */
static int64 iMainMsgQueMaxDiskSpace = 0;			/* max disk space allocated 0 ==> unlimited */
static int bMainMsgQSaveOnShutdown = 1;				/* save queue on shutdown (when DA enabled)? */
static int iMainMsgQueueDeqtWinFromHr = 0;			/* hour begin of time frame when queue is to be dequeued */
static int iMainMsgQueueDeqtWinToHr = 25;			/* hour begin of time frame when queue is to be dequeued */


/* support for simple textual representation of FIOP names
 * rgerhards, 2005-09-27
 */
static char* getFIOPName(unsigned iFIOP)
{
	char *pRet;
	switch(iFIOP) {
		case FIOP_CONTAINS:
			pRet = "contains";
			break;
		case FIOP_ISEQUAL:
			pRet = "isequal";
			break;
		case FIOP_STARTSWITH:
			pRet = "startswith";
			break;
		case FIOP_REGEX:
			pRet = "regex";
			break;
		default:
			pRet = "NOP";
			break;
	}
	return pRet;
}


/* Reset config variables to default values.
 * rgerhards, 2007-07-17
 */
static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal)
{
	cCCEscapeChar = '#';
	bActExecWhenPrevSusp = 0;
	iActExecOnceInterval = 0;
	bDebugPrintTemplateList = 1;
	bDebugPrintCfSysLineHandlerList = 1;
	bDebugPrintModuleList = 1;
	bEscapeCCOnRcv = 1; /* default is to escape control characters */
	bReduceRepeatMsgs = 0;
	if(pszMainMsgQFName != NULL) {
		free(pszMainMsgQFName);
		pszMainMsgQFName = NULL;
	}
	iMainMsgQueueSize = 10000;
	iMainMsgQHighWtrMark = 8000;
	iMainMsgQLowWtrMark = 2000;
	iMainMsgQDiscardMark = 9800;
	iMainMsgQDiscardSeverity = 4;
	iMainMsgQueMaxFileSize = 1024 * 1024;
	iMainMsgQueueNumWorkers = 1;
	iMainMsgQPersistUpdCnt = 0;
	iMainMsgQtoQShutdown = 0;
	iMainMsgQtoActShutdown = 1000;
	iMainMsgQtoEnq = 2000;
	iMainMsgQtoWrkShutdown = 60000;
	iMainMsgQWrkMinMsgs = 100;
	iMainMsgQDeqSlowdown = 0;
	bMainMsgQSaveOnShutdown = 1;
	MainMsgQueType = QUEUETYPE_FIXED_ARRAY;
	iMainMsgQueMaxDiskSpace = 0;
	glbliActionResumeRetryCount = 0;

	return RS_RET_OK;
}


/* hardcoded standard templates (used for defaults) */
static uchar template_DebugFormat[] = "\"Debug line with all properties:\nFROMHOST: '%FROMHOST%', fromhost-ip: '%fromhost-ip%', HOSTNAME: '%HOSTNAME%', PRI: %PRI%,\nsyslogtag '%syslogtag%', programname: '%programname%', APP-NAME: '%APP-NAME%', PROCID: '%PROCID%', MSGID: '%MSGID%',\nTIMESTAMP: '%TIMESTAMP%', STRUCTURED-DATA: '%STRUCTURED-DATA%',\nmsg: '%msg%'\nescaped msg: '%msg:::drop-cc%'\nrawmsg: '%rawmsg%'\n\n\"";
static uchar template_SyslogProtocol23Format[] = "\"<%PRI%>1 %TIMESTAMP:::date-rfc3339% %HOSTNAME% %APP-NAME% %PROCID% %MSGID% %STRUCTURED-DATA% %msg%\n\"";
static uchar template_TraditionalFileFormat[] = "\"%TIMESTAMP% %HOSTNAME% %syslogtag%%msg:::sp-if-no-1st-sp%%msg:::drop-last-lf%\n\"";
static uchar template_FileFormat[] = "\"%TIMESTAMP:::date-rfc3339% %HOSTNAME% %syslogtag%%msg:::sp-if-no-1st-sp%%msg:::drop-last-lf%\n\"";
static uchar template_WallFmt[] = "\"\r\n\7Message from syslogd@%HOSTNAME% at %timegenerated% ...\r\n %syslogtag%%msg%\n\r\"";
static uchar template_ForwardFormat[] = "\"<%PRI%>%TIMESTAMP:::date-rfc3339% %HOSTNAME% %syslogtag:1:32%%msg:::sp-if-no-1st-sp%%msg%\"";
static uchar template_TraditionalForwardFormat[] = "\"<%PRI%>%TIMESTAMP% %HOSTNAME% %syslogtag:1:32%%msg:::sp-if-no-1st-sp%%msg%\"";
static uchar template_StdUsrMsgFmt[] = "\" %syslogtag%%msg%\n\r\"";
static uchar template_StdDBFmt[] = "\"insert into SystemEvents (Message, Facility, FromHost, Priority, DeviceReportedTime, ReceivedAt, InfoUnitID, SysLogTag) values ('%msg%', %syslogfacility%, '%HOSTNAME%', %syslogpriority%, '%timereported:::date-mysql%', '%timegenerated:::date-mysql%', %iut%, '%syslogtag%')\",SQL";
static uchar template_StdPgSQLFmt[] = "\"insert into SystemEvents (Message, Facility, FromHost, Priority, DeviceReportedTime, ReceivedAt, InfoUnitID, SysLogTag) values ('%msg%', %syslogfacility%, '%HOSTNAME%', %syslogpriority%, '%timereported:::date-pgsql%', '%timegenerated:::date-pgsql%', %iut%, '%syslogtag%')\",STDSQL";
/* end template */


/* up to the next comment, prototypes that should be removed by reordering */
/* Function prototypes. */
static char **crunch_list(char *list);
static void reapchild();
static void debug_switch();
static void sighup_handler();
static void freeSelectors(void);
static void processImInternal(void);


static int usage(void)
{
	fprintf(stderr, "usage: rsyslogd [-cversion] [-46AdnqQvwx] [-lhostlist] [-sdomainlist]\n"
			"                [-fconffile] [-ipidfile] [-Nlevel]\n"
			"To run rsyslogd in native mode, use \"rsyslogd -c3 <other options>\"\n\n"
			"For further information see http://www.rsyslog.com/doc\n");
	exit(1); /* "good" exit - done to terminate usage() */
}


/* function to destruct a selector_t object
 * rgerhards, 2007-08-01
 */
rsRetVal
selectorDestruct(void *pVal)
{
	selector_t *pThis = (selector_t *) pVal;

	assert(pThis != NULL);

	if(pThis->pCSHostnameComp != NULL)
		rsCStrDestruct(&pThis->pCSHostnameComp);
	if(pThis->pCSProgNameComp != NULL)
		rsCStrDestruct(&pThis->pCSProgNameComp);

	if(pThis->f_filter_type == FILTER_PROP) {
		if(pThis->f_filterData.prop.pCSPropName != NULL)
			rsCStrDestruct(&pThis->f_filterData.prop.pCSPropName);
		if(pThis->f_filterData.prop.pCSCompValue != NULL)
			rsCStrDestruct(&pThis->f_filterData.prop.pCSCompValue);
	} else if(pThis->f_filter_type == FILTER_EXPR) {
		if(pThis->f_filterData.f_expr != NULL)
			expr.Destruct(&pThis->f_filterData.f_expr);
	}

	llDestroy(&pThis->llActList);
	free(pThis);
	
	return RS_RET_OK;
}


/* function to construct a selector_t object
 * rgerhards, 2007-08-01
 */
rsRetVal
selectorConstruct(selector_t **ppThis)
{
	DEFiRet;
	selector_t *pThis;

	assert(ppThis != NULL);
	
	if((pThis = (selector_t*) calloc(1, sizeof(selector_t))) == NULL) {
		ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY);
	}
	CHKiRet(llInit(&pThis->llActList, actionDestruct, NULL, NULL));

finalize_it:
	if(iRet != RS_RET_OK) {
		if(pThis != NULL) {
			selectorDestruct(pThis);
		}
	}
	*ppThis = pThis;
	RETiRet;
}


/* rgerhards, 2005-10-24: crunch_list is called only during option processing. So
 * it is never called once rsyslogd is running (not even when HUPed). This code
 * contains some exits, but they are considered safe because they only happen
 * during startup. Anyhow, when we review the code here, we might want to
 * reconsider the exit()s.
 */
static char **crunch_list(char *list)
{
	int count, i;
	char *p, *q;
	char **result = NULL;

	p = list;
	
	/* strip off trailing delimiters */
	while (p[strlen(p)-1] == LIST_DELIMITER) {
		count--;
		p[strlen(p)-1] = '\0';
	}
	/* cut off leading delimiters */
	while (p[0] == LIST_DELIMITER) {
		count--;
		p++; 
	}
	
	/* count delimiters to calculate elements */
	for (count=i=0; p[i]; i++)
		if (p[i] == LIST_DELIMITER) count++;
	
	if ((result = (char **)malloc(sizeof(char *) * (count+2))) == NULL) {
		printf ("Sorry, can't get enough memory, exiting.\n");
		exit(0); /* safe exit, because only called during startup */
	}
	
	/*
	 * We now can assume that the first and last
	 * characters are different from any delimiters,
	 * so we don't have to care about this.
	 */
	count = 0;
	while ((q=strchr(p, LIST_DELIMITER))) {
		result[count] = (char *) malloc((q - p + 1) * sizeof(char));
		if (result[count] == NULL) {
			printf ("Sorry, can't get enough memory, exiting.\n");
			exit(0); /* safe exit, because only called during startup */
		}
		strncpy(result[count], p, q - p);
		result[count][q - p] = '\0';
		p = q; p++;
		count++;
	}
	if ((result[count] = \
	     (char *)malloc(sizeof(char) * strlen(p) + 1)) == NULL) {
		printf ("Sorry, can't get enough memory, exiting.\n");
		exit(0); /* safe exit, because only called during startup */
	}
	strcpy(result[count],p);
	result[++count] = NULL;

#if 0
	count=0;
	while (result[count])
		dbgprintf("#%d: %s\n", count, StripDomains[count++]);
#endif
	return result;
}


void untty(void)
#ifdef HAVE_SETSID
{
	if ( !Debug ) {
		setsid();
	}
	return;
}
#else
{
	int i;

	if ( !Debug ) {
		i = open(_PATH_TTY, O_RDWR);
		if (i >= 0) {
#			if !defined(__hpux)
				(void) ioctl(i, (int) TIOCNOTTY, (char *)0);
#			else
				/* TODO: we need to implement something for HP UX! -- rgerhards, 2008-03-04 */
				/* actually, HP UX should have setsid, so the code directly above should
				 * trigger. So the actual question is why it doesn't do that...
				 */
#			endif
			(void) close(i);
		}
	}
}
#endif


/* Take a raw input line, decode the message, and print the message
 * on the appropriate log files.
 * rgerhards 2004-11-08: Please note
 * that this function does only a partial decoding. At best, it splits 
 * the PRI part. No further decode happens. The rest is done in 
 * logmsg().
 * Added the iSource parameter so that we know if we have to parse
 * HOSTNAME or not. rgerhards 2004-11-16.
 * changed parameter iSource to bParseHost. For details, see comment in
 * printchopped(). rgerhards 2005-10-06
 * rgerhards: 2008-03-06: added "flags" to allow an input module to specify
 * flags, most importantly to request ignoring the messages' timestamp.
 *
 * rgerhards, 2008-03-19:
 * I added an additional calling parameter to permit specifying the flow
 * control capability of the source.
 *
 * rgerhards, 2008-05-16:
 * I added an additional calling parameter (hnameIP) to enable specifying the IP
 * of a remote host.
 */
rsRetVal printline(uchar *hname, uchar *hnameIP, uchar *msg, int bParseHost, int flags, flowControl_t flowCtlType)
{
	DEFiRet;
	register uchar *p;
	int pri;
	msg_t *pMsg;

	/* Now it is time to create the message object (rgerhards) */
	CHKiRet(msgConstruct(&pMsg));
	MsgSetFlowControlType(pMsg, flowCtlType);
	MsgSetRawMsg(pMsg, (char*)msg);
	
	pMsg->bParseHOSTNAME  = bParseHost;
	/* test for special codes */
	pri = DEFUPRI;
	p = msg;
	if (*p == '<') {
		pri = 0;
		while (isdigit((int) *++p))
		{
		   pri = 10 * pri + (*p - '0');
		}
		if (*p == '>')
			++p;
	}
	if (pri &~ (LOG_FACMASK|LOG_PRIMASK))
		pri = DEFUPRI;
	pMsg->iFacility = LOG_FAC(pri);
	pMsg->iSeverity = LOG_PRI(pri);

	/* Now we look at the HOSTNAME. That is a bit complicated...
	 * If we have a locally received message, it does NOT
	 * contain any hostname information in the message itself.
	 * As such, the HOSTNAME is the same as the system that
	 * the message was received from (that, for obvious reasons,
	 * being the local host).  rgerhards 2004-11-16
	 */
	if(bParseHost == 0)
		MsgSetHOSTNAME(pMsg, (char*)hname);
	MsgSetRcvFrom(pMsg, (char*)hname);
	CHKiRet(MsgSetRcvFromIP(pMsg, hnameIP));

	/* rgerhards 2004-11-19: well, well... we've now seen that we
	 * have the "hostname problem" also with the traditional Unix
	 * message. As we like to emulate it, we need to add the hostname
	 * to it.
	 */
	if(MsgSetUxTradMsg(pMsg, (char*)p) != 0)
		ABORT_FINALIZE(RS_RET_ERR);

	logmsg(pMsg, flags);

finalize_it:
	RETiRet;
}


/* This takes a received message that must be decoded and submits it to
 * the main message queue. The function calls the necessary parser.
 *
 * rgerhards, 2006-11-30: I have greatly changed this function. Formerly,
 * it tried to reassemble multi-part messages, which is a legacy stock
 * sysklogd concept. In essence, that was that messages not ending with
 * \0 were glued together. As far as I can see, this is a sysklogd
 * specific feature and, from looking at the code, seems to be used
 * pretty seldom (if at all). I remove this now, not the least because it is totally
 * incompatible with upcoming IETF syslog standards. If you experience
 * strange behaviour with messages beeing split across multiple lines,
 * this function here might be the place to look at.
 *
 * Some previous history worth noting:
 * I added the "iSource" parameter. This is needed to distinguish between
 * messages that have a hostname in them (received from the internet) and
 * those that do not have (most prominently /dev/log).  rgerhards 2004-11-16
 * And now I removed the "iSource" parameter and changed it to be "bParseHost",
 * because all that it actually controls is whether the host is parsed or not.
 * For rfc3195 support, we needed to modify the algo for host parsing, so we can
 * no longer rely just on the source (rfc3195d forwarded messages arrive via
 * unix domain sockets but contain the hostname). rgerhards, 2005-10-06
 *
 * rgerhards, 2008-02-18:
 * This function was previously called "printchopped"() and has been renamed
 * as part of the effort to create a clean internal message submission interface.
 * It also has been adopted to our usual calling interface, but currently does
 * not provide any useful return states. But we now have the hook and things can
 * improve in the future. <-- TODO!
 *
 * rgerhards, 2008-03-19:
 * I added an additional calling parameter to permit specifying the flow
 * control capability of the source.
 *
 * rgerhards, 2008-05-16:
 * I added an additional calling parameter (hnameIP) to enable specifying the IP
 * of a remote host.
 */
rsRetVal
parseAndSubmitMessage(uchar *hname, uchar *hnameIP, uchar *msg, int len, int bParseHost, int flags, flowControl_t flowCtlType)
{
	DEFiRet;
	register int iMsg;
	uchar *pMsg;
	uchar *pData;
	uchar *pEnd;
	uchar tmpline[MAXLINE + 1];
#	ifdef USE_NETZIP
	uchar deflateBuf[MAXLINE + 1];
	uLongf iLenDefBuf;
#	endif

	assert(hname != NULL);
	assert(hnameIP != NULL);
	assert(msg != NULL);
	assert(len >= 0);

	/* we first check if we have a NUL character at the very end of the
	 * message. This seems to be a frequent problem with a number of senders.
	 * So I have now decided to drop these NULs. However, if they are intentional,
	 * that may cause us some problems, e.g. with syslog-sign. On the other hand,
	 * current code always has problems with intentional NULs (as it needs to escape
	 * them to prevent problems with the C string libraries), so that does not
	 * really matter. Just to be on the save side, we'll log destruction of such
	 * NULs in the debug log.
	 * rgerhards, 2007-09-14
	 */
	if(*(msg + len - 1) == '\0') {
		dbgprintf("dropped NUL at very end of message\n");
		len--;
	}

	/* then we check if we need to drop trailing LFs, which often make
	 * their way into syslog messages unintentionally. In order to remain
	 * compatible to recent IETF developments, we allow the user to
	 * turn on/off this handling.  rgerhards, 2007-07-23
	 */
	if(bDropTrailingLF && *(msg + len - 1) == '\n') {
		dbgprintf("dropped LF at very end of message (DropTrailingLF is set)\n");
		len--;
	}

	iMsg = 0;	/* initialize receiving buffer index */
	pMsg = tmpline; /* set receiving buffer pointer */
	pData = msg;	/* set source buffer pointer */
	pEnd = msg + len; /* this is one off, which is intensional */

#	ifdef USE_NETZIP
	/* we first need to check if we have a compressed record. If so,
	 * we must decompress it.
	 */
	if(len > 0 && *msg == 'z') { /* compressed data present? (do NOT change order if conditions!) */
		/* we have compressed data, so let's deflate it. We support a maximum
		 * message size of MAXLINE. If it is larger, an error message is logged
		 * and the message is dropped. We do NOT try to decompress larger messages
		 * as such might be used for denial of service. It might happen to later
		 * builds that such functionality be added as an optional, operator-configurable
		 * feature.
		 */
		int ret;
		iLenDefBuf = MAXLINE;
		ret = uncompress((uchar *) deflateBuf, &iLenDefBuf, (uchar *) msg+1, len-1);
		dbgprintf("Compressed message uncompressed with status %d, length: new %ld, old %d.\n",
		        ret, (long) iLenDefBuf, len-1);
		/* Now check if the uncompression worked. If not, there is not much we can do. In
		 * that case, we log an error message but ignore the message itself. Storing the
		 * compressed text is dangerous, as it contains control characters. So we do
		 * not do this. If someone would like to have a copy, this code here could be
		 * modified to do a hex-dump of the buffer in question. We do not include
		 * this functionality right now.
		 * rgerhards, 2006-12-07
		 */
		if(ret != Z_OK) {
			errmsg.LogError(0, NO_ERRCODE, "Uncompression of a message failed with return code %d "
			            "- enable debug logging if you need further information. "
				    "Message ignored.", ret);
			FINALIZE; /* unconditional exit, nothing left to do... */
		}
		pData = deflateBuf;
		pEnd = deflateBuf + iLenDefBuf;
	}
#	else /* ifdef USE_NETZIP */
	/* in this case, we still need to check if the message is compressed. If so, we must
	 * tell the user we can not accept it.
	 */
	if(len > 0 && *msg == 'z') {
		errmsg.LogError(0, NO_ERRCODE, "Received a compressed message, but rsyslogd does not have compression "
		         "support enabled. The message will be ignored.");
		FINALIZE;
	}	
#	endif /* ifdef USE_NETZIP */

	while(pData < pEnd) {
		if(iMsg >= MAXLINE) {
			/* emergency, we now need to flush, no matter if
			 * we are at end of message or not...
			 */
			if(iMsg == MAXLINE) {
				*(pMsg + iMsg) = '\0'; /* space *is* reserved for this! */
				printline(hname, hnameIP, tmpline, bParseHost, flags, flowCtlType);
			} else {
				/* This case in theory never can happen. If it happens, we have
				 * a logic error. I am checking for it, because if I would not,
				 * we would address memory invalidly with the code above. I
				 * do not care much about this case, just a debug log entry
				 * (I couldn't do any more smart things anyway...).
				 * rgerhards, 2007-9-20
				 */
				dbgprintf("internal error: iMsg > MAXLINE in printchopped()\n");
			}
			FINALIZE; /* in this case, we are done... nothing left we can do */
		}
		if(*pData == '\0') { /* guard against \0 characters... */
			/* changed to the sequence (somewhat) proposed in
			 * draft-ietf-syslog-protocol-19. rgerhards, 2006-11-30
			 */
			if(iMsg + 3 < MAXLINE) { /* do we have space? */
				*(pMsg + iMsg++) =  cCCEscapeChar;
				*(pMsg + iMsg++) = '0';
				*(pMsg + iMsg++) = '0';
				*(pMsg + iMsg++) = '0';
			} /* if we do not have space, we simply ignore the '\0'... */
			  /* log an error? Very questionable... rgerhards, 2006-11-30 */
			  /* decided: we do not log an error, it won't help... rger, 2007-06-21 */
			++pData;
		} else if(bEscapeCCOnRcv && iscntrl((int) *pData)) {
			/* we are configured to escape control characters. Please note
			 * that this most probably break non-western character sets like
			 * Japanese, Korean or Chinese. rgerhards, 2007-07-17
			 * Note: sysklogd logs octal values only for DEL and CCs above 127.
			 * For others, it logs ^n where n is the control char converted to an
			 * alphabet character. We like consistency and thus escape it to octal
			 * in all cases. If someone complains, we may change the mode. At least
			 * we known now what's going on.
			 * rgerhards, 2007-07-17
			 */
			if(iMsg + 3 < MAXLINE) { /* do we have space? */
				*(pMsg + iMsg++) = cCCEscapeChar;
				*(pMsg + iMsg++) = '0' + ((*pData & 0300) >> 6);
				*(pMsg + iMsg++) = '0' + ((*pData & 0070) >> 3);
				*(pMsg + iMsg++) = '0' + ((*pData & 0007));
			} /* again, if we do not have space, we ignore the char - see comment at '\0' */
			++pData;
		} else {
			*(pMsg + iMsg++) = *pData++;
		}
	}

	*(pMsg + iMsg) = '\0'; /* space *is* reserved for this! */

	/* typically, we should end up here! */
	printline(hname, hnameIP, tmpline, bParseHost, flags, flowCtlType);

finalize_it:
	RETiRet;
}


/* this is a special function used to submit an error message. This
 * function is also passed to the runtime library as the generic error
 * message handler. -- rgerhards, 2008-04-17
 */
rsRetVal
submitErrMsg(int iErr, uchar *msg)
{
	DEFiRet;
	iRet = logmsgInternal(iErr, LOG_SYSLOG|LOG_ERR, msg, ADDDATE);
	RETiRet;
}


/* rgerhards 2004-11-09: the following is a function that can be used
 * to log a message orginating from the syslogd itself. In sysklogd code,
 * this is done by simply calling logmsg(). However, logmsg() is changed in
 * rsyslog so that it takes a msg "object". So it can no longer be called
 * directly. This method here solves the need. It provides an interface that
 * allows to construct a locally-generated message. Please note that this
 * function here probably is only an interim solution and that we need to
 * think on the best way to do this.
 */
rsRetVal
logmsgInternal(int iErr, int pri, uchar *msg, int flags)
{
	uchar pszTag[33];
	msg_t *pMsg;
	DEFiRet;

	CHKiRet(msgConstruct(&pMsg));
	MsgSetUxTradMsg(pMsg, (char*)msg);
	MsgSetRawMsg(pMsg, (char*)msg);
	MsgSetHOSTNAME(pMsg, (char*)glbl.GetLocalHostName());
	MsgSetRcvFrom(pMsg, (char*)glbl.GetLocalHostName());
	MsgSetRcvFromIP(pMsg, (uchar*)"127.0.0.1");
	/* check if we have an error code associated and, if so,
	 * adjust the tag. -- r5gerhards, 2008-06-27
	 */
	if(iErr == NO_ERRCODE) {
		MsgSetTAG(pMsg, "rsyslogd:");
	} else {
		snprintf((char*)pszTag, sizeof(pszTag), "rsyslogd%d:", iErr);
		pszTag[32] = '\0'; /* just to make sure... */
		MsgSetTAG(pMsg, (char*)pszTag);
	}
	pMsg->iFacility = LOG_FAC(pri);
	pMsg->iSeverity = LOG_PRI(pri);
	pMsg->bParseHOSTNAME = 0;
	datetime.getCurrTime(&(pMsg->tTIMESTAMP)); /* use the current time! */
	flags |= INTERNAL_MSG;

	/* we now check if we should print internal messages out to stderr. This was
	 * suggested by HKS as a way to help people troubleshoot rsyslog configuration
	 * (by running it interactively. This makes an awful lot of sense, so I add
	 * it here. -- rgerhards, 2008-07-28
	 * Note that error messages can not be disable during a config verify. This
	 * permits us to process unmodified config files which otherwise contain a
	 * supressor statement.
	 */
	if(bErrMsgToStderr || iConfigVerify) {
		fprintf(stderr, "rsyslogd: %s\n", msg);
	}

	if(bHaveMainQueue == 0) { /* not yet in queued mode */
		iminternalAddMsg(pri, pMsg, flags);
	} else {
		/* we have the queue, so we can simply provide the 
		 * message to the queue engine.
		 */
		logmsg(pMsg, flags);
	}
finalize_it:
	RETiRet;
}

/* This functions looks at the given message and checks if it matches the
 * provided filter condition. If so, it returns true, else it returns
 * false. This is a helper to logmsg() and meant to drive the decision
 * process if a message is to be processed or not. As I expect this
 * decision code to grow more complex over time AND logmsg() is already
 * a very lengthy function, I thought a separate function is more appropriate.
 * 2005-09-19 rgerhards
 * 2008-02-25 rgerhards: changed interface, now utilizes iRet, bProcessMsg
 * returns is message should be procesed.
 */
static rsRetVal shouldProcessThisMessage(selector_t *f, msg_t *pMsg, int *bProcessMsg)
{
	DEFiRet;
	unsigned short pbMustBeFreed;
	char *pszPropVal;
	int bRet = 0;
	vm_t *pVM = NULL;
	var_t *pResult = NULL;

	assert(f != NULL);
	assert(pMsg != NULL);

	/* we first have a look at the global, BSD-style block filters (for tag
	 * and host). Only if they match, we evaluate the actual filter.
	 * rgerhards, 2005-10-18
	 */
	if(f->eHostnameCmpMode == HN_NO_COMP) {
		/* EMPTY BY INTENSION - we check this value first, because
		 * it is the one most often used, so this saves us time!
		 */
	} else if(f->eHostnameCmpMode == HN_COMP_MATCH) {
		if(rsCStrSzStrCmp(f->pCSHostnameComp, (uchar*) getHOSTNAME(pMsg), getHOSTNAMELen(pMsg))) {
			/* not equal, so we are already done... */
			dbgprintf("hostname filter '+%s' does not match '%s'\n", 
				rsCStrGetSzStrNoNULL(f->pCSHostnameComp), getHOSTNAME(pMsg));
			FINALIZE;
		}
	} else { /* must be -hostname */
		if(!rsCStrSzStrCmp(f->pCSHostnameComp, (uchar*) getHOSTNAME(pMsg), getHOSTNAMELen(pMsg))) {
			/* not equal, so we are already done... */
			dbgprintf("hostname filter '-%s' does not match '%s'\n", 
				rsCStrGetSzStrNoNULL(f->pCSHostnameComp), getHOSTNAME(pMsg));
			FINALIZE;
		}
	}
	
	if(f->pCSProgNameComp != NULL) {
		int bInv = 0, bEqv = 0, offset = 0;
		if(*(rsCStrGetSzStrNoNULL(f->pCSProgNameComp)) == '-') {
			if(*(rsCStrGetSzStrNoNULL(f->pCSProgNameComp) + 1) == '-')
				offset = 1;
			else {
				bInv = 1;
				offset = 1;
			}
		}
		if(!rsCStrOffsetSzStrCmp(f->pCSProgNameComp, offset, (uchar*) getProgramName(pMsg), getProgramNameLen(pMsg)))
			bEqv = 1;

		if((!bEqv && !bInv) || (bEqv && bInv)) {
			/* not equal or inverted selection, so we are already done... */
			dbgprintf("programname filter '%s' does not match '%s'\n", 
				rsCStrGetSzStrNoNULL(f->pCSProgNameComp), getProgramName(pMsg));
			FINALIZE;
		}
	}
	
	/* done with the BSD-style block filters */

	if(f->f_filter_type == FILTER_PRI) {
		/* skip messages that are incorrect priority */
		if ( (f->f_filterData.f_pmask[pMsg->iFacility] == TABLE_NOPRI) || \
		    ((f->f_filterData.f_pmask[pMsg->iFacility] & (1<<pMsg->iSeverity)) == 0) )
			bRet = 0;
		else
			bRet = 1;
	} else if(f->f_filter_type == FILTER_EXPR) {
		CHKiRet(vm.Construct(&pVM));
		CHKiRet(vm.ConstructFinalize(pVM));
		CHKiRet(vm.SetMsg(pVM, pMsg));
		CHKiRet(vm.ExecProg(pVM, f->f_filterData.f_expr->pVmprg));
		CHKiRet(vm.PopBoolFromStack(pVM, &pResult));
		dbgprintf("result of expression evaluation: %lld\n", pResult->val.num);
		/* VM is destructed on function exit */
		bRet = (pResult->val.num) ? 1 : 0;
	} else {
		assert(f->f_filter_type == FILTER_PROP); /* assert() just in case... */
		pszPropVal = MsgGetProp(pMsg, NULL, f->f_filterData.prop.pCSPropName, &pbMustBeFreed);

		/* Now do the compares (short list currently ;)) */
		switch(f->f_filterData.prop.operation ) {
		case FIOP_CONTAINS:
			if(rsCStrLocateInSzStr(f->f_filterData.prop.pCSCompValue, (uchar*) pszPropVal) != -1)
				bRet = 1;
			break;
		case FIOP_ISEQUAL:
			if(rsCStrSzStrCmp(f->f_filterData.prop.pCSCompValue,
					  (uchar*) pszPropVal, strlen(pszPropVal)) == 0)
				bRet = 1; /* process message! */
			break;
		case FIOP_STARTSWITH:
			if(rsCStrSzStrStartsWithCStr(f->f_filterData.prop.pCSCompValue,
					  (uchar*) pszPropVal, strlen(pszPropVal)) == 0)
				bRet = 1; /* process message! */
			break;
		case FIOP_REGEX:
			if(rsCStrSzStrMatchRegex(f->f_filterData.prop.pCSCompValue,
					  (unsigned char*) pszPropVal) == 0)
				bRet = 1;
			break;
		default:
			/* here, it handles NOP (for performance reasons) */
			assert(f->f_filterData.prop.operation == FIOP_NOP);
			bRet = 1; /* as good as any other default ;) */
			break;
		}

		/* now check if the value must be negated */
		if(f->f_filterData.prop.isNegated)
			bRet = (bRet == 1) ?  0 : 1;

		if(Debug) {
			dbgprintf("Filter: check for property '%s' (value '%s') ",
			        rsCStrGetSzStrNoNULL(f->f_filterData.prop.pCSPropName),
			        pszPropVal);
			if(f->f_filterData.prop.isNegated)
				dbgprintf("NOT ");
			dbgprintf("%s '%s': %s\n",
			       getFIOPName(f->f_filterData.prop.operation),
			       rsCStrGetSzStrNoNULL(f->f_filterData.prop.pCSCompValue),
			       bRet ? "TRUE" : "FALSE");
		}

		/* cleanup */
		if(pbMustBeFreed)
			free(pszPropVal);
	}

finalize_it:
	/* destruct in any case, not just on error, but it makes error handling much easier */
	if(pVM != NULL)
		vm.Destruct(&pVM);

	if(pResult != NULL)
		var.Destruct(&pResult);

	*bProcessMsg = bRet;
	RETiRet;
}


/* helper to processMsg(), used to call the configured actions. It is
 * executed from within llExecFunc() of the action list.
 * rgerhards, 2007-08-02
 */
typedef struct processMsgDoActions_s {
	int bPrevWasSuspended; /* was the previous action suspended? */
	msg_t *pMsg;
} processMsgDoActions_t;
DEFFUNC_llExecFunc(processMsgDoActions)
{
	DEFiRet;
	rsRetVal iRetMod;	/* return value of module - we do not always pass that back */
	action_t *pAction = (action_t*) pData;
	processMsgDoActions_t *pDoActData = (processMsgDoActions_t*) pParam;

	assert(pAction != NULL);

	if((pAction->bExecWhenPrevSusp  == 1) && (pDoActData->bPrevWasSuspended == 0)) {
		dbgprintf("not calling action because the previous one is not suspended\n");
		ABORT_FINALIZE(RS_RET_OK);
	}

	iRetMod = actionCallAction(pAction, pDoActData->pMsg);
	if(iRetMod == RS_RET_DISCARDMSG) {
		ABORT_FINALIZE(RS_RET_DISCARDMSG);
	} else if(iRetMod == RS_RET_SUSPENDED) {
		/* indicate suspension for next module to be called */
		pDoActData->bPrevWasSuspended = 1;
	} else {
		pDoActData->bPrevWasSuspended = 0;
	}

finalize_it:
	RETiRet;
}


/* Process (consume) a received message. Calls the actions configured.
 * rgerhards, 2005-10-13
 */
static void
processMsg(msg_t *pMsg)
{
	selector_t *f;
	int bContinue;
	int bProcessMsg;
	processMsgDoActions_t DoActData;
	rsRetVal iRet;

	BEGINfunc
	assert(pMsg != NULL);

	/* log the message to the particular outputs */

	bContinue = 1;
	for (f = Files; f != NULL && bContinue ; f = f->f_next) {
		/* first check the filters... */
		iRet = shouldProcessThisMessage(f, pMsg, &bProcessMsg);
		if(!bProcessMsg) {
			continue;
		}

		/* ok -- from here, we have action-specific code, nothing really selector-specific -- rger 2007-08-01 */
		DoActData.pMsg = pMsg;
		DoActData.bPrevWasSuspended = 0;
		if(llExecFunc(&f->llActList, processMsgDoActions, (void*)&DoActData) == RS_RET_DISCARDMSG)
			bContinue = 0;
	}
	ENDfunc
}


/* The consumer of dequeued messages. This function is called by the
 * queue engine on dequeueing of a message. It runs on a SEPARATE
 * THREAD.
 * NOTE: Having more than one worker requires guarding of some
 * message object structures and potentially others - need to be checked
 * before we support multiple worker threads on the message queue.
 * Please note: the message object is destructed by the queue itself!
 */
static rsRetVal
msgConsumer(void __attribute__((unused)) *notNeeded, void *pUsr)
{
	DEFiRet;
	msg_t *pMsg = (msg_t*) pUsr;

	assert(pMsg != NULL);

	processMsg(pMsg);
	msgDestruct(&pMsg);

	RETiRet;
}


/* Helper to parseRFCSyslogMsg. This function parses a field up to
 * (and including) the SP character after it. The field contents is
 * returned in a caller-provided buffer. The parsepointer is advanced
 * to after the terminating SP. The caller must ensure that the 
 * provided buffer is large enough to hold the to be extracted value.
 * Returns 0 if everything is fine or 1 if either the field is not
 * SP-terminated or any other error occurs.
 * rger, 2005-11-24
 */
static int parseRFCField(char **pp2parse, char *pResult)
{
	char *p2parse;
	int iRet = 0;

	assert(pp2parse != NULL);
	assert(*pp2parse != NULL);
	assert(pResult != NULL);

	p2parse = *pp2parse;

	/* this is the actual parsing loop */
	while(*p2parse && *p2parse != ' ') {
		*pResult++ = *p2parse++;
	}

	if(*p2parse == ' ')
		++p2parse; /* eat SP, but only if not at end of string */
	else
		iRet = 1; /* there MUST be an SP! */
	*pResult = '\0';

	/* set the new parse pointer */
	*pp2parse = p2parse;
	return 0;
}


/* Helper to parseRFCSyslogMsg. This function parses the structured
 * data field of a message. It does NOT parse inside structured data,
 * just gets the field as whole. Parsing the single entities is left
 * to other functions. The parsepointer is advanced
 * to after the terminating SP. The caller must ensure that the 
 * provided buffer is large enough to hold the to be extracted value.
 * Returns 0 if everything is fine or 1 if either the field is not
 * SP-terminated or any other error occurs.
 * rger, 2005-11-24
 */
static int parseRFCStructuredData(char **pp2parse, char *pResult)
{
	char *p2parse;
	int bCont = 1;
	int iRet = 0;

	assert(pp2parse != NULL);
	assert(*pp2parse != NULL);
	assert(pResult != NULL);

	p2parse = *pp2parse;

	/* this is the actual parsing loop
	 * Remeber: structured data starts with [ and includes any characters
	 * until the first ] followed by a SP. There may be spaces inside
	 * structured data. There may also be \] inside the structured data, which
	 * do NOT terminate an element.
	 */
	if(*p2parse != '[')
		return 1; /* this is NOT structured data! */

	while(bCont) {
		if(*p2parse == '\0') {
			iRet = 1; /* this is not valid! */
			bCont = 0;
		} else if(*p2parse == '\\' && *(p2parse+1) == ']') {
			/* this is escaped, need to copy both */
			*pResult++ = *p2parse++;
			*pResult++ = *p2parse++;
		} else if(*p2parse == ']' && *(p2parse+1) == ' ') {
			/* found end, just need to copy the ] and eat the SP */
			*pResult++ = *p2parse;
			p2parse += 2;
			bCont = 0;
		} else {
			*pResult++ = *p2parse++;
		}
	}

	if(*p2parse == ' ')
		++p2parse; /* eat SP, but only if not at end of string */
	else
		iRet = 1; /* there MUST be an SP! */
	*pResult = '\0';

	/* set the new parse pointer */
	*pp2parse = p2parse;
	return 0;
}

/* parse a RFC-formatted syslog message. This function returns
 * 0 if processing of the message shall continue and 1 if something
 * went wrong and this messe should be ignored. This function has been
 * implemented in the effort to support syslog-protocol. Please note that
 * the name (parse *RFC*) stems from the hope that syslog-protocol will
 * some time become an RFC. Do not confuse this with informational
 * RFC 3164 (which is legacy syslog).
 *
 * currently supported format:
 *
 * <PRI>VERSION SP TIMESTAMP SP HOSTNAME SP APP-NAME SP PROCID SP MSGID SP [SD-ID]s SP MSG
 *
 * <PRI> is already stripped when this function is entered. VERSION already
 * has been confirmed to be "1", but has NOT been stripped from the message.
 *
 * rger, 2005-11-24
 */
static int parseRFCSyslogMsg(msg_t *pMsg, int flags)
{
	char *p2parse;
	char *pBuf;
	int bContParse = 1;

	assert(pMsg != NULL);
	assert(pMsg->pszUxTradMsg != NULL);
	p2parse = (char*) pMsg->pszUxTradMsg;

	/* do a sanity check on the version and eat it */
	assert(p2parse[0] == '1' && p2parse[1] == ' ');
	p2parse += 2;

	/* Now get us some memory we can use as a work buffer while parsing.
	 * We simply allocated a buffer sufficiently large to hold all of the
	 * message, so we can not run into any troubles. I think this is
	 * more wise then to use individual buffers.
	 */
	if((pBuf = malloc(sizeof(char)* strlen(p2parse) + 1)) == NULL)
		return 1;
		
	/* IMPORTANT NOTE:
	 * Validation is not actually done below nor are any errors handled. I have
	 * NOT included this for the current proof of concept. However, it is strongly
	 * advisable to add it when this code actually goes into production.
	 * rgerhards, 2005-11-24
	 */

	/* TIMESTAMP */
	if(datetime.ParseTIMESTAMP3339(&(pMsg->tTIMESTAMP),  &p2parse) == FALSE) {
		dbgprintf("no TIMESTAMP detected!\n");
		bContParse = 0;
		flags |= ADDDATE;
	}

	if (flags & ADDDATE) {
		datetime.getCurrTime(&(pMsg->tTIMESTAMP)); /* use the current time! */
	}

	/* HOSTNAME */
	if(bContParse) {
		parseRFCField(&p2parse, pBuf);
		MsgSetHOSTNAME(pMsg, pBuf);
	} else {
		/* we can not parse, so we get the system we
		 * received the data from.
		 */
		MsgSetHOSTNAME(pMsg, getRcvFrom(pMsg));
	}

	/* APP-NAME */
	if(bContParse) {
		parseRFCField(&p2parse, pBuf);
		MsgSetAPPNAME(pMsg, pBuf);
	}

	/* PROCID */
	if(bContParse) {
		parseRFCField(&p2parse, pBuf);
		MsgSetPROCID(pMsg, pBuf);
	}

	/* MSGID */
	if(bContParse) {
		parseRFCField(&p2parse, pBuf);
		MsgSetMSGID(pMsg, pBuf);
	}

	/* STRUCTURED-DATA */
	if(bContParse) {
		parseRFCStructuredData(&p2parse, pBuf);
		MsgSetStructuredData(pMsg, pBuf);
	}

	/* MSG */
	MsgSetMSG(pMsg, p2parse);

	free(pBuf);
	return 0; /* all ok */
}


/* parse a legay-formatted syslog message. This function returns
 * 0 if processing of the message shall continue and 1 if something
 * went wrong and this messe should be ignored. This function has been
 * implemented in the effort to support syslog-protocol.
 * rger, 2005-11-24
 * As of 2006-01-10, I am removing the logic to continue parsing only
 * when a valid TIMESTAMP is detected. Validity of other fields already
 * is ignored. This is due to the fact that the parser has grown smarter
 * and is now more able to understand different dialects of the syslog
 * message format. I do not expect any bad side effects of this change,
 * but I thought I log it in this comment.
 * rgerhards, 2006-01-10
 */
static int parseLegacySyslogMsg(msg_t *pMsg, int flags)
{
	char *p2parse;
	char *pBuf;
	char *pWork;
	cstr_t *pStrB;
	int iCnt;
	int bTAGCharDetected;

	assert(pMsg != NULL);
	assert(pMsg->pszUxTradMsg != NULL);
	p2parse = (char*) pMsg->pszUxTradMsg;

	/* Check to see if msg contains a timestamp. We stary trying with a
	 * high-precision one...
	 */
	if(datetime.ParseTIMESTAMP3339(&(pMsg->tTIMESTAMP), &p2parse) == TRUE) {
		/* we are done - parse pointer is moved by ParseTIMESTAMP3339 */;
	} else if(datetime.ParseTIMESTAMP3164(&(pMsg->tTIMESTAMP), p2parse) == TRUE) {
		p2parse += 16;
	} else if(*p2parse == ' ') { /* try to see if it is slighly malformed - HP procurve seems to do that sometimes */
		if(datetime.ParseTIMESTAMP3164(&(pMsg->tTIMESTAMP), p2parse+1) == TRUE) {
			/* indeed, we got it! */
			p2parse += 17;
		} else {
			flags |= ADDDATE;
		}
	} else {
		flags |= ADDDATE;
	}

	/* here we need to check if the timestamp is valid. If it is not,
	 * we can not continue to parse but must treat the rest as the 
	 * MSG part of the message (as of RFC 3164).
	 * rgerhards 2004-12-03
	 */
	if(flags & ADDDATE) {
		datetime.getCurrTime(&(pMsg->tTIMESTAMP)); /* use the current time! */
	}

	/* rgerhards, 2006-03-13: next, we parse the hostname and tag. But we 
	 * do this only when the user has not forbidden this. I now introduce some
	 * code that allows a user to configure rsyslogd to treat the rest of the
	 * message as MSG part completely. In this case, the hostname will be the
	 * machine that we received the message from and the tag will be empty. This
	 * is meant to be an interim solution, but for now it is in the code.
	 */
	if(bParseHOSTNAMEandTAG && !(flags & INTERNAL_MSG)) {
		/* parse HOSTNAME - but only if this is network-received!
		 * rger, 2005-11-14: we still have a problem with BSD messages. These messages
		 * do NOT include a host name. In most cases, this leads to the TAG to be treated
		 * as hostname and the first word of the message as the TAG. Clearly, this is not
		 * of advantage ;) I think I have now found a way to handle this situation: there
		 * are certain characters which are frequently used in TAG (e.g. ':'), which are
		 * *invalid* in host names. So while parsing the hostname, I check for these characters.
		 * If I find them, I set a simple flag but continue. After parsing, I check the flag.
		 * If it was set, then we most probably do not have a hostname but a TAG. Thus, I change
		 * the fields. I think this logic shall work with any type of syslog message.
		 */
		bTAGCharDetected = 0;
		if(pMsg->bParseHOSTNAME) {
			/* TODO: quick and dirty memory allocation */
			/* the memory allocated is far too much in most cases. But on the plus side,
			 * it is quite fast... - rgerhards, 2007-09-20
			 */
			if((pBuf = malloc(sizeof(char)* (strlen(p2parse) +1))) == NULL)
				return 1;
			pWork = pBuf;
			/* this is the actual parsing loop */
			while(*p2parse && *p2parse != ' ' && *p2parse != ':') {
				if(*p2parse == '[' || *p2parse == ']' || *p2parse == '/')
					bTAGCharDetected = 1;
				*pWork++ = *p2parse++;
			}
			/* we need to handle ':' seperately, because it terminates the
			 * TAG - so we also need to terminate the parser here!
			 * rgerhards, 2007-09-10 *p2parse points to a valid address here in 
			 * any case. We can reach this point only if we are at end of string,
			 * or we have a ':' or ' '. What the if below does is check if we are
			 * not at end of string and, if so, advance the parse pointer. If we 
			 * are already at end of string, *p2parse is equal to '\0', neither if
			 * will be true and the parse pointer remain as is. This is perfectly
			 * well.
			 */
			if(*p2parse == ':') {
				bTAGCharDetected = 1;
				/* We will move hostname to tag, so preserve ':' (otherwise we 
				 * will needlessly change the message format) */
				*pWork++ = *p2parse++; 
			} else if(*p2parse == ' ')
				++p2parse;
			*pWork = '\0';
			MsgAssignHOSTNAME(pMsg, pBuf);
		}
		/* check if we seem to have a TAG */
		if(bTAGCharDetected) {
			/* indeed, this smells like a TAG, so lets use it for this. We take
			 * the HOSTNAME from the sender system instead.
			 */
			dbgprintf("HOSTNAME contains invalid characters, assuming it to be a TAG.\n");
			moveHOSTNAMEtoTAG(pMsg);
			MsgSetHOSTNAME(pMsg, getRcvFrom(pMsg));
		}

		/* now parse TAG - that should be present in message from all sources.
		 * This code is somewhat not compliant with RFC 3164. As of 3164,
		 * the TAG field is ended by any non-alphanumeric character. In
		 * practice, however, the TAG often contains dashes and other things,
		 * which would end the TAG. So it is not desirable. As such, we only
		 * accept colon and SP to be terminators. Even there is a slight difference:
		 * a colon is PART of the TAG, while a SP is NOT part of the tag
		 * (it is CONTENT). Starting 2008-04-04, we have removed the 32 character
		 * size limit (from RFC3164) on the tag. This had bad effects on existing
		 * envrionments, as sysklogd didn't obey it either (probably another bug
		 * in RFC3164...). We now receive the full size, but will modify the
		 * outputs so that only 32 characters max are used by default.
		 */
		/* The following code in general is quick & dirty - I need to get
		 * it going for a test, rgerhards 2004-11-16 */
		/* lol.. we tried to solve it, just to remind ourselfs that 32 octets
		 * is the max size ;) we need to shuffle the code again... Just for 
		 * the records: the code is currently clean, but we could optimize it! */
		if(!bTAGCharDetected) {
			uchar *pszTAG;
			if(rsCStrConstruct(&pStrB) != RS_RET_OK) 
				return 1;
			rsCStrSetAllocIncrement(pStrB, 33);
			pWork = pBuf;
			iCnt = 0;
			while(*p2parse && *p2parse != ':' && *p2parse != ' ') {
				rsCStrAppendChar(pStrB, *p2parse++);
				++iCnt;
			}
			if(*p2parse == ':') {
				++p2parse; 
				rsCStrAppendChar(pStrB, ':');
			}
			rsCStrFinish(pStrB);

			rsCStrConvSzStrAndDestruct(pStrB, &pszTAG, 1);
			if(pszTAG == NULL)
			{	/* rger, 2005-11-10: no TAG found - this implies that what
				 * we have considered to be the HOSTNAME is most probably the
				 * TAG. We consider it so probable, that we now adjust it
				 * that way. So we pick up the previously set hostname, assign
				 * it to tag and use the sender system (from IP stack) as
				 * the hostname. This situation is the standard case with
				 * stock BSD syslogd.
				 */
				dbgprintf("No TAG in message, assuming that HOSTNAME is missing.\n");
				moveHOSTNAMEtoTAG(pMsg);
				MsgSetHOSTNAME(pMsg, getRcvFrom(pMsg));
			} else { /* we have a TAG, so we can happily set it ;) */
				MsgAssignTAG(pMsg, pszTAG);
			}
		} else {
			/* we have no TAG, so we ... */
			/*DO NOTHING*/;
		}
	} else {
		/* we enter this code area when the user has instructed rsyslog NOT
		 * to parse HOSTNAME and TAG - rgerhards, 2006-03-13
		 */
		if(!(flags & INTERNAL_MSG))
		{
			dbgprintf("HOSTNAME and TAG not parsed by user configuraton.\n");
			MsgSetHOSTNAME(pMsg, getRcvFrom(pMsg));
		}
	}

	/* The rest is the actual MSG */
	MsgSetMSG(pMsg, p2parse);

	return 0; /* all ok */
}


/* submit a fully created message to the main message queue. The message is
 * fully processed and parsed, so no parsing at all happens. This is primarily
 * a hook to prevent the need for callers to know about the main message queue
 * (which may change in the future as we will probably have multiple rule
 * sets and thus queues...).
 * rgerhards, 2008-02-13
 */
rsRetVal
submitMsg(msg_t *pMsg)
{
	DEFiRet;

	ISOBJ_TYPE_assert(pMsg, msg);
	
	MsgPrepareEnqueue(pMsg);
	queueEnqObj(pMsgQueue, pMsg->flowCtlType, (void*) pMsg);

	RETiRet;
}


/* Log a message to the appropriate log files, users, etc. based on
 * the priority.
 * rgerhards 2004-11-08: actually, this also decodes all but the PRI part.
 * rgerhards 2004-11-09: ... but only, if syslogd could properly be initialized
 *			 if not, we use emergency logging to the console and in
 *                       this case, no further decoding happens.
 * changed to no longer receive a plain message but a msg object instead.
 * rgerhards-2004-11-16: OK, we are now up to another change... This method
 * actually needs to PARSE the message. How exactly this needs to happen depends on
 * a number of things. Most importantly, it depends on the source. For example,
 * locally received messages (SOURCE_UNIXAF) do NOT have a hostname in them. So
 * we need to treat them differntly form network-received messages which have.
 * Well, actually not all network-received message really have a hostname. We
 * can just hope they do, but we can not be sure. So this method tries to find
 * whatever can be found in the message and uses that... Obviously, there is some
 * potential for misinterpretation, which we simply can not solve under the
 * circumstances given.
 */
void
logmsg(msg_t *pMsg, int flags)
{
	char *msg;

	BEGINfunc
	assert(pMsg != NULL);
	assert(pMsg->pszUxTradMsg != NULL);
	msg = (char*) pMsg->pszUxTradMsg;
	dbgprintf("logmsg: flags %x, pri %s, from '%s', msg %s\n", flags, getPRI(pMsg), getRcvFrom(pMsg), msg);

	/* rger 2005-11-24 (happy thanksgiving!): we now need to check if we have
	 * a traditional syslog message or one formatted according to syslog-protocol.
	 * We need to apply different parsers depending on that. We use the
	 * -protocol VERSION field for the detection.
	 */
	if(msg[0] == '1' && msg[1] == ' ') {
		dbgprintf("Message has syslog-protocol format.\n");
		setProtocolVersion(pMsg, 1);
		if(parseRFCSyslogMsg(pMsg, flags) == 1) {
			msgDestruct(&pMsg);
			return;
		}
	} else { /* we have legacy syslog */
		dbgprintf("Message has legacy syslog format.\n");
		setProtocolVersion(pMsg, 0);
		if(parseLegacySyslogMsg(pMsg, flags) == 1) {
			msgDestruct(&pMsg);
			return;
		}
	}

	/* ---------------------- END PARSING ---------------- */
	
	/* now submit the message to the main queue - then we are done */
	pMsg->msgFlags = flags;
	MsgPrepareEnqueue(pMsg);
	queueEnqObj(pMsgQueue, pMsg->flowCtlType, (void*) pMsg);
	ENDfunc
}


static void
reapchild()
{
	int saved_errno = errno;
	struct sigaction sigAct;

	memset(&sigAct, 0, sizeof (sigAct));
	sigemptyset(&sigAct.sa_mask);
	sigAct.sa_handler = reapchild;
	sigaction(SIGCHLD, &sigAct, NULL);  /* reset signal handler -ASP */

	while(waitpid(-1, NULL, WNOHANG) > 0);
	errno = saved_errno;
}


/* helper to doFlushRptdMsgs() to flush the individual action links via llExecFunc
 * rgerhards, 2007-08-02
 */
DEFFUNC_llExecFunc(flushRptdMsgsActions)
{
	action_t *pAction = (action_t*) pData;

	assert(pAction != NULL);
	
	BEGINfunc
	LockObj(pAction);
	if (pAction->f_prevcount && time(NULL) >= REPEATTIME(pAction)) {
		dbgprintf("flush %s: repeated %d times, %d sec.\n",
		    module.GetStateName(pAction->pMod), pAction->f_prevcount,
		    repeatinterval[pAction->f_repeatcount]);
		actionWriteToAction(pAction);
		BACKOFF(pAction);
	}
	UnlockObj(pAction);

	ENDfunc
	return RS_RET_OK; /* we ignore errors, we can not do anything either way */
}


/* This method flushes reapeat messages.
 */
static void
doFlushRptdMsgs(void)
{
	register selector_t *f;

	/* see if we need to flush any "message repeated n times"... 
	 * Note that this interferes with objects running on other threads.
	 * We are using appropriate locking inside the function to handle that.
	 */
	for (f = Files; f != NULL ; f = f->f_next) {
		llExecFunc(&f->llActList, flushRptdMsgsActions, NULL);
	}
}


static void debug_switch()
{
	struct sigaction sigAct;

	if(debugging_on == 0) {
		debugging_on = 1;
		dbgprintf("Switching debugging_on to true\n");
	} else {
		dbgprintf("Switching debugging_on to false\n");
		debugging_on = 0;
	}
	
	memset(&sigAct, 0, sizeof (sigAct));
	sigemptyset(&sigAct.sa_mask);
	sigAct.sa_handler = debug_switch;
	sigaction(SIGUSR1, &sigAct, NULL);
}


void legacyOptsEnq(uchar *line)
{
	legacyOptsLL_t *pNew;

	pNew = malloc(sizeof(legacyOptsLL_t));
	if(line == NULL)
		pNew->line = NULL;
	else
		pNew->line = (uchar *) strdup((char *) line);
	pNew->next = NULL;

	if(pLegacyOptsLL == NULL)
		pLegacyOptsLL = pNew;
	else {
		legacyOptsLL_t *pThis = pLegacyOptsLL;

		while(pThis->next != NULL)
			pThis = pThis->next;
		pThis->next = pNew;
	}
}


void legacyOptsFree(void)
{
	legacyOptsLL_t *pThis = pLegacyOptsLL, *pNext;

	while(pThis != NULL) {
		if(pThis->line != NULL)
			free(pThis->line);
		pNext = pThis->next;
		free(pThis);
		pThis = pNext;
	}
}


void legacyOptsHook(void)
{
	legacyOptsLL_t *pThis = pLegacyOptsLL;

	while(pThis != NULL) {
		if(pThis->line != NULL) {
			errno = 0;
			errmsg.LogError(0, NO_ERRCODE, "Warning: backward compatibility layer added to following "
				        "directive to rsyslog.conf: %s", pThis->line);
			conf.cfsysline(pThis->line);
		}
		pThis = pThis->next;
	}
}


void legacyOptsParseTCP(char ch, char *arg)
{
	register int i;
	register char *pArg = arg;
	static char conflict = '\0';

	if((conflict == 'g' && ch == 't') || (conflict == 't' && ch == 'g')) {
		fprintf(stderr, "rsyslogd: If you want to use both -g and -t, use directives instead, -%c ignored.\n", ch);
		return;
	} else
		conflict = ch;

	/* extract port */
	i = 0;
	while(isdigit((int) *pArg))
		i = i * 10 + *pArg++ - '0';

	/* number of sessions */
	if(*pArg == '\0' || *pArg == ',') {
		if(ch == 't')
			legacyOptsEnq((uchar *) "ModLoad imtcp");
		else if(ch == 'g')
			legacyOptsEnq((uchar *) "ModLoad imgssapi");

		if(i >= 0 && i <= 65535) {
			uchar line[30];

			if(ch == 't') {
				snprintf((char *) line, sizeof(line), "InputTCPServerRun %d", i);
			} else if(ch == 'g') {
				snprintf((char *) line, sizeof(line), "InputGSSServerRun %d", i);
			}
			legacyOptsEnq(line);
		} else {
			if(ch == 't') {
				fprintf(stderr, "rsyslogd: Invalid TCP listen port %d - changed to 514.\n", i);
				legacyOptsEnq((uchar *) "InputTCPServerRun 514");
			} else if(ch == 'g') {
				fprintf(stderr, "rsyslogd: Invalid GSS listen port %d - changed to 514.\n", i);
				legacyOptsEnq((uchar *) "InputGSSServerRun 514");
			}
		}

		if(*pArg == ',') {
			++pArg;
			while(isspace((int) *pArg))
				++pArg;
			i = 0;
			while(isdigit((int) *pArg)) {
				i = i * 10 + *pArg++ - '0';
			}
			if(i > 0) {
				uchar line[30];

				snprintf((char *) line, sizeof(line), "InputTCPMaxSessions %d", i);
				legacyOptsEnq(line);
			} else {
				if(ch == 't') {
					fprintf(stderr,	"rsyslogd: TCP session max configured "
						"to %d [-t %s] - changing to 1.\n", i, arg);
					legacyOptsEnq((uchar *) "InputTCPMaxSessions 1");
				} else if (ch == 'g') {
					fprintf(stderr,	"rsyslogd: GSS session max configured "
						"to %d [-g %s] - changing to 1.\n", i, arg);
					legacyOptsEnq((uchar *) "InputTCPMaxSessions 1");
				}
			}
		}
	} else
		fprintf(stderr, "rsyslogd: Invalid -t %s command line option.\n", arg);
}


/* doDie() is a signal handler. If called, it sets the bFinished variable
 * to indicate the program should terminate. However, it does not terminate
 * it itself, because that causes issues with multi-threading. The actual
 * termination is then done on the main thread. This solution might introduce
 * a minimal delay, but it is much cleaner than the approach of doing everything
 * inside the signal handler.
 * rgerhards, 2005-10-26
 */
static void doDie(int sig)
{
	static int iRetries = 0; /* debug aid */
	printf("DoDie called.\n");
	if(iRetries++ == 4) {
		printf("DoDie called 5 times - unconditional exit\n");
		abort();
	}
	bFinished = sig;
}


/* This function frees all dynamically allocated memory for program termination.
 * It must be called only immediately before exit(). It is primarily an aid
 * for memory debuggers, which prevents cluttered outupt.
 * rgerhards, 2008-03-20
 */
static void
freeAllDynMemForTermination(void)
{
	if(pszMainMsgQFName != NULL)
		free(pszMainMsgQFName);
	if(pModDir != NULL)
		free(pModDir);
}


/* die() is called when the program shall end. This typically only occurs
 * during sigterm or during the initialization. 
 * As die() is intended to shutdown rsyslogd, it is
 * safe to call exit() here. Just make sure that die() itself is not called
 * at inapropriate places. As a general rule of thumb, it is a bad idea to add
 * any calls to die() in new code!
 * rgerhards, 2005-10-24
 */
static void
die(int sig)
{
	char buf[256];

	dbgprintf("exiting on signal %d\n", sig);

	/* IMPORTANT: we should close the inputs first, and THEN send our termination
	 * message. If we do it the other way around, logmsgInternal() may block on
	 * a full queue and the inputs still fill up that queue. Depending on the
	 * scheduling order, we may end up with logmsgInternal being held for a quite
	 * long time. When the inputs are terminated first, that should not happen
	 * because the queue is drained in parallel. The situation could only become
	 * an issue with extremely long running actions in a queue full environment.
	 * However, such actions are at least considered poorly written, if not
	 * outright wrong. So we do not care about this very remote problem.
	 * rgerhards, 2008-01-11
	 */

	/* close the inputs */
	dbgprintf("Terminating input threads...\n");
	thrdTerminateAll(); /* TODO: inputs only, please */

	/* and THEN send the termination log message (see long comment above) */
	if (sig) {
		(void) snprintf(buf, sizeof(buf) / sizeof(char),
		 " [origin software=\"rsyslogd\" " "swVersion=\"" VERSION \
		 "\" x-pid=\"%d\" x-info=\"http://www.rsyslog.com\"]" " exiting on signal %d.",
		 (int) myPid, sig);
		errno = 0;
		logmsgInternal(NO_ERRCODE, LOG_SYSLOG|LOG_INFO, (uchar*)buf, ADDDATE);
	}
	
	/* drain queue (if configured so) and stop main queue worker thread pool */
	dbgprintf("Terminating main queue...\n");
	queueDestruct(&pMsgQueue);
	pMsgQueue = NULL;

	/* Free ressources and close connections. This includes flushing any remaining
	 * repeated msgs.
	 */
	dbgprintf("Terminating outputs...\n");
	freeSelectors();

	dbgprintf("all primary multi-thread sources have been terminated - now doing aux cleanup...\n");
	/* rger 2005-02-22
	 * now clean up the in-memory structures. OK, the OS
	 * would also take care of that, but if we do it
	 * ourselfs, this makes finding memory leaks a lot
	 * easier.
	 */
	tplDeleteAll();

	remove_pid(PidFile);

	/* de-init some modules */
	modExitIminternal();

	/*dbgPrintAllDebugInfo(); / * this is the last spot where this can be done - below output modules are unloaded! */

	/* the following line cleans up CfSysLineHandlers that were not based on loadable
	 * modules. As such, they are not yet cleared.
	 */
	unregCfSysLineHdlrs();

	legacyOptsFree();

	/* terminate the remaining classes */
	GlobalClassExit();

	/* TODO: this would also be the right place to de-init the builtin output modules. We
	 * do not currently do that, because the module interface does not allow for
	 * it. This will come some time later (it's essential with loadable modules).
	 * For the time being, this is a memory leak on exit, but as the process is
	 * terminated, we do not really bother about it.
	 * rgerhards, 2007-08-03
	 * I have added some code now, but all that mod init/de-init should be moved to
	 * init, so that modules are unloaded and reloaded on HUP to. Eventually it should go
	 * into freeSelectors() - but that needs to be seen. -- rgerhards, 2007-08-09
	 */
	module.UnloadAndDestructAll(eMOD_LINK_ALL);

	dbgprintf("Clean shutdown completed, bye\n");
	/* dbgClassExit MUST be the last one, because it de-inits the debug system */
	dbgClassExit();

	/* free all remaining memory blocks - this is not absolutely necessary, but helps
	 * us keep memory debugger logs clean and this is in aid in developing. It doesn't
	 * cost much time, so we do it always. -- rgerhards, 2008-03-20
	 */
	freeAllDynMemForTermination();
	/* NO CODE HERE - feeelAllDynMemForTermination() must be the last thing before exit()! */
	exit(0); /* "good" exit, this is the terminator function for rsyslog [die()] */
}

/*
 * Signal handler to terminate the parent process.
 * rgerhards, 2005-10-24: this is only called during forking of the
 * detached syslogd. I consider this method to be safe.
 */
static void doexit()
{
	exit(0); /* "good" exit, only during child-creation */
}


/* set the action resume interval
 */
static rsRetVal setActionResumeInterval(void __attribute__((unused)) *pVal, int iNewVal)
{
	return actionSetGlobalResumeInterval(iNewVal);
}


/* set the processes umask (upon configuration request)
 */
static rsRetVal setUmask(void __attribute__((unused)) *pVal, int iUmask)
{
	umask(iUmask);
	dbgprintf("umask set to 0%3.3o.\n", iUmask);

	return RS_RET_OK;
}


/* helper to freeSelectors(), used with llExecFunc() to flush 
 * pending output.  -- rgerhards, 2007-08-02
 * We do not need to lock the action object here as the processing
 * queue is already empty and no other threads are running when
 * we call this function. -- rgerhards, 2007-12-12
 */
DEFFUNC_llExecFunc(freeSelectorsActions)
{
	action_t *pAction = (action_t*) pData;

	assert(pAction != NULL);

	/* flush any pending output */
	if(pAction->f_prevcount) {
		actionWriteToAction(pAction);
	}

	return RS_RET_OK; /* never fails ;) */
}


/*  Close all open log files and free selector descriptor array.
 */
static void freeSelectors(void)
{
	selector_t *f;
	selector_t *fPrev;

	if(Files != NULL) {
		dbgprintf("Freeing log structures.\n");

		for(f = Files ; f != NULL ; f = f->f_next) {
			llExecFunc(&f->llActList, freeSelectorsActions, NULL);
		}

		/* actions flushed and ready for destruction - so do that... */
		f = Files;
		while (f != NULL) {
			fPrev = f;
			f = f->f_next;
			selectorDestruct(fPrev);
		}

		/* Reflect the deletion of the selectors linked list. */
		Files = NULL;
		bHaveMainQueue = 0;
	}
}


/* helper to dbPrintInitInfo, to print out all actions via
 * the llExecFunc() facility.
 * rgerhards, 2007-08-02
 */
DEFFUNC_llExecFunc(dbgPrintInitInfoAction)
{
	DEFiRet;
	iRet = actionDbgPrint((action_t*) pData);
	dbgprintf("\n");

	RETiRet;
}

/* print debug information as part of init(). This pretty much
 * outputs the whole config of rsyslogd. I've moved this code
 * out of init() to clean it somewhat up.
 * rgerhards, 2007-07-31
 */
static void dbgPrintInitInfo(void)
{
	register selector_t *f;
	int iSelNbr = 1;
	int i;

	dbgprintf("\nActive selectors:\n");
	for (f = Files; f != NULL ; f = f->f_next) {
		dbgprintf("Selector %d:\n", iSelNbr++);
		if(f->pCSProgNameComp != NULL)
			dbgprintf("tag: '%s'\n", rsCStrGetSzStrNoNULL(f->pCSProgNameComp));
		if(f->eHostnameCmpMode != HN_NO_COMP)
			dbgprintf("hostname: %s '%s'\n",
				f->eHostnameCmpMode == HN_COMP_MATCH ?
					"only" : "allbut",
				rsCStrGetSzStrNoNULL(f->pCSHostnameComp));
		if(f->f_filter_type == FILTER_PRI) {
			for (i = 0; i <= LOG_NFACILITIES; i++)
				if (f->f_filterData.f_pmask[i] == TABLE_NOPRI)
					dbgprintf(" X ");
				else
					dbgprintf("%2X ", f->f_filterData.f_pmask[i]);
		} else if(f->f_filter_type == FILTER_EXPR) {
			dbgprintf("EXPRESSION-BASED Filter: can currently not be displayed");
		} else {
			dbgprintf("PROPERTY-BASED Filter:\n");
			dbgprintf("\tProperty.: '%s'\n",
			       rsCStrGetSzStrNoNULL(f->f_filterData.prop.pCSPropName));
			dbgprintf("\tOperation: ");
			if(f->f_filterData.prop.isNegated)
				dbgprintf("NOT ");
			dbgprintf("'%s'\n", getFIOPName(f->f_filterData.prop.operation));
			dbgprintf("\tValue....: '%s'\n",
			       rsCStrGetSzStrNoNULL(f->f_filterData.prop.pCSCompValue));
			dbgprintf("\tAction...: ");
		}

		dbgprintf("\nActions:\n");
		llExecFunc(&f->llActList, dbgPrintInitInfoAction, NULL); /* actions */

		dbgprintf("\n");
	}
	dbgprintf("\n");
	if(bDebugPrintTemplateList)
		tplPrintList();
	if(bDebugPrintModuleList)
		module.PrintList();
	ochPrintList();

	if(bDebugPrintCfSysLineHandlerList)
		dbgPrintCfSysLineHandlers();

	dbgprintf("Messages with malicious PTR DNS Records are %sdropped.\n",
		  glbl.GetDropMalPTRMsgs() ? "" : "not ");

	dbgprintf("Control characters are %sreplaced upon reception.\n",
		  bEscapeCCOnRcv? "" : "not ");

	if(bEscapeCCOnRcv)
		dbgprintf("Control character escape sequence prefix is '%c'.\n",
			cCCEscapeChar);

	dbgprintf("Main queue size %d messages.\n", iMainMsgQueueSize);
	dbgprintf("Main queue worker threads: %d, Perists every %d updates.\n",
		  iMainMsgQueueNumWorkers, iMainMsgQPersistUpdCnt);
	dbgprintf("Main queue timeouts: shutdown: %d, action completion shutdown: %d, enq: %d\n",
		   iMainMsgQtoQShutdown, iMainMsgQtoActShutdown, iMainMsgQtoEnq);
	dbgprintf("Main queue watermarks: high: %d, low: %d, discard: %d, discard-severity: %d\n",
		   iMainMsgQHighWtrMark, iMainMsgQLowWtrMark, iMainMsgQDiscardMark, iMainMsgQDiscardSeverity);
	dbgprintf("Main queue save on shutdown %d, max disk space allowed %lld\n",
		   bMainMsgQSaveOnShutdown, iMainMsgQueMaxDiskSpace);
	/* TODO: add
	iActionRetryCount = 0;
	iActionRetryInterval = 30000;
	static int iMainMsgQtoWrkShutdown = 60000;
	static int iMainMsgQtoWrkMinMsgs = 100;	
	static int iMainMsgQbSaveOnShutdown = 1;
	iMainMsgQueMaxDiskSpace = 0;
	setQPROP(queueSettoWrkShutdown, "$MainMsgQueueTimeoutWorkerThreadShutdown", 5000);
	setQPROP(queueSetiMinMsgsPerWrkr, "$MainMsgQueueWorkerThreadMinimumMessages", 100);
	setQPROP(queueSetbSaveOnShutdown, "$MainMsgQueueSaveOnShutdown", 1);
	 */
	dbgprintf("Work Directory: '%s'.\n", glbl.GetWorkDir());
}


/* Start the input modules. This function will probably undergo big changes
 * while we implement the input module interface. For now, it does the most
 * important thing to get at least my poor initial input modules up and
 * running. Almost no config option is taken.
 * rgerhards, 2007-12-14
 */
static rsRetVal
startInputModules(void)
{
	DEFiRet;
	modInfo_t *pMod;

	/* loop through all modules and activate them (brr...) */
	pMod = module.GetNxtType(NULL, eMOD_IN);
	while(pMod != NULL) {
		if((iRet = pMod->mod.im.willRun()) == RS_RET_OK) {
			/* activate here */
			thrdCreate(pMod->mod.im.runInput, pMod->mod.im.afterRun);
		} else {
			dbgprintf("module %lx will not run, iRet %d\n", (unsigned long) pMod, iRet);
		}
	pMod = module.GetNxtType(pMod, eMOD_IN);
	}

	ENDfunc
	return RS_RET_OK; /* intentional: we do not care about module errors */
}


/* INIT -- Initialize syslogd from configuration table
 * init() is called at initial startup AND each time syslogd is HUPed
 * Note that if iConfigVerify is set, only the config file is verified but nothing
 * else happens. -- rgerhards, 2008-07-28
 */
static rsRetVal
init(void)
{
	DEFiRet;
	rsRetVal localRet;
	int iNbrActions;
	char cbuf[BUFSIZ];
	char bufStartUpMsg[512];
	struct sigaction sigAct;

	thrdTerminateAll(); /* stop all running input threads - TODO: reconsider location! */

	/* initialize some static variables */
	pDfltHostnameCmp = NULL;
	pDfltProgNameCmp = NULL;
	eDfltHostnameCmpMode = HN_NO_COMP;

	dbgprintf("rsyslog %s - called init()\n", VERSION);

	/* delete the message queue, which also flushes all messages left over */
	if(pMsgQueue != NULL) {
		dbgprintf("deleting main message queue\n");
		queueDestruct(&pMsgQueue); /* delete pThis here! */
		pMsgQueue = NULL;
	}

	/*  Close all open log files and free log descriptor array. This also frees
	 *  all output-modules instance data.
	 */
	freeSelectors();

	/* Unload all non-static modules */
	dbgprintf("Unloading non-static modules.\n");
	module.UnloadAndDestructAll(eMOD_LINK_DYNAMIC_LOADED);

	dbgprintf("Clearing templates.\n");
	tplDeleteNew();

	/* re-setting values to defaults (where applicable) */
	/* once we have loadable modules, we must re-visit this code. The reason is
	 * that config variables are not re-set, because the module is not yet loaded. On
	 * the other hand, that doesn't matter, because the module got unloaded and is then
	 * re-loaded, so the variables should be re-set via that way. And this is exactly how
	 * it works. Loadable module's variables are initialized on load, the rest here.
	 * rgerhards, 2008-04-28
	 */
	conf.cfsysline((uchar*)"ResetConfigVariables");

	conf.ReInitConf();

	/* open the configuration file */
	localRet = conf.processConfFile(ConfFile);
	CHKiRet(conf.GetNbrActActions(&iNbrActions));

	if(localRet != RS_RET_OK) {
		errmsg.LogError(0, localRet, "CONFIG ERROR: could not interpret master config file '%s'.", ConfFile);
	} else if(iNbrActions == 0) {
		errmsg.LogError(0, RS_RET_NO_ACTIONS, "CONFIG ERROR: there are no active actions configured. Inputs will "
			 "run, but no output whatsoever is created.");
	}

	if(localRet != RS_RET_OK || iNbrActions == 0) {
		/* rgerhards: this code is executed to set defaults when the
		 * config file could not be opened. We might think about
		 * abandoning the run in this case - but this, too, is not
		 * very clever... So we stick with what we have.
		 * We ignore any errors while doing this - we would be lost anyhow...
		 */
		errmsg.LogError(0, NO_ERRCODE, "EMERGENCY CONFIGURATION ACTIVATED - fix rsyslog config file!");
		selector_t *f = NULL;

		/* note: we previously used _POSIY_TTY_NAME_MAX+1, but this turned out to be
		 * too low on linux... :-S   -- rgerhards, 2008-07-28
		 */
		char szTTYNameBuf[128];
		conf.cfline((uchar*)"*.ERR\t" _PATH_CONSOLE, &f);
		conf.cfline((uchar*)"syslog.*\t" _PATH_CONSOLE, &f);
		conf.cfline((uchar*)"*.PANIC\t*", &f);
		conf.cfline((uchar*)"syslog.*\troot", &f);
		if(ttyname_r(0, szTTYNameBuf, sizeof(szTTYNameBuf)) == 0) {
			snprintf(cbuf,sizeof(cbuf), "*.*\t%s", szTTYNameBuf);
			conf.cfline((uchar*)cbuf, &f);
		} else {
			dbgprintf("error %d obtaining controlling terminal, not using that emergency rule\n", errno);
		}
		selectorAddList(f);
	}

	legacyOptsHook();

	/* we are now done with reading the configuration. This is the right time to
	 * free some objects that were just needed for loading it. rgerhards 2005-10-19
	 */
	if(pDfltHostnameCmp != NULL) {
		rsCStrDestruct(&pDfltHostnameCmp);
	}

	if(pDfltProgNameCmp != NULL) {
		rsCStrDestruct(&pDfltProgNameCmp);
	}

	/* some checks */
	if(iMainMsgQueueNumWorkers < 1) {
		errmsg.LogError(0, NO_ERRCODE, "$MainMsgQueueNumWorkers must be at least 1! Set to 1.\n");
		iMainMsgQueueNumWorkers = 1;
	}

	if(MainMsgQueType == QUEUETYPE_DISK) {
		errno = 0;	/* for logerror! */
		if(glbl.GetWorkDir() == NULL) {
			errmsg.LogError(0, NO_ERRCODE, "No $WorkDirectory specified - can not run main message queue in 'disk' mode. "
				 "Using 'FixedArray' instead.\n");
			MainMsgQueType = QUEUETYPE_FIXED_ARRAY;
		}
		if(pszMainMsgQFName == NULL) {
			errmsg.LogError(0, NO_ERRCODE, "No $MainMsgQueueFileName specified - can not run main message queue in "
				 "'disk' mode. Using 'FixedArray' instead.\n");
			MainMsgQueType = QUEUETYPE_FIXED_ARRAY;
		}
	}

	/* we are done checking the config - now validate if we should actually run or not.
	 * If not, terminate. -- rgerhards, 2008-07-25
	 */
	if(iConfigVerify)
		ABORT_FINALIZE(RS_RET_VALIDATION_RUN);

	/* switch the message object to threaded operation, if necessary */
	if(MainMsgQueType == QUEUETYPE_DIRECT || iMainMsgQueueNumWorkers > 1) {
		MsgEnableThreadSafety();
	}

	/* create message queue */
	CHKiRet_Hdlr(queueConstruct(&pMsgQueue, MainMsgQueType, iMainMsgQueueNumWorkers, iMainMsgQueueSize, msgConsumer)) {
		/* no queue is fatal, we need to give up in that case... */
		fprintf(stderr, "fatal error %d: could not create message queue - rsyslogd can not run!\n", iRet);
		exit(1);
	}
	/* name our main queue object (it's not fatal if it fails...) */
	obj.SetName((obj_t*) pMsgQueue, (uchar*) "main queue");

	/* ... set some properties ... */
#	define setQPROP(func, directive, data) \
	CHKiRet_Hdlr(func(pMsgQueue, data)) { \
		errmsg.LogError(0, NO_ERRCODE, "Invalid " #directive ", error %d. Ignored, running with default setting", iRet); \
	}
#	define setQPROPstr(func, directive, data) \
	CHKiRet_Hdlr(func(pMsgQueue, data, (data == NULL)? 0 : strlen((char*) data))) { \
		errmsg.LogError(0, NO_ERRCODE, "Invalid " #directive ", error %d. Ignored, running with default setting", iRet); \
	}

	setQPROP(queueSetMaxFileSize, "$MainMsgQueueFileSize", iMainMsgQueMaxFileSize);
	setQPROP(queueSetsizeOnDiskMax, "$MainMsgQueueMaxDiskSpace", iMainMsgQueMaxDiskSpace);
	setQPROPstr(queueSetFilePrefix, "$MainMsgQueueFileName", pszMainMsgQFName);
	setQPROP(queueSetiPersistUpdCnt, "$MainMsgQueueCheckpointInterval", iMainMsgQPersistUpdCnt);
	setQPROP(queueSettoQShutdown, "$MainMsgQueueTimeoutShutdown", iMainMsgQtoQShutdown );
	setQPROP(queueSettoActShutdown, "$MainMsgQueueTimeoutActionCompletion", iMainMsgQtoActShutdown);
	setQPROP(queueSettoWrkShutdown, "$MainMsgQueueWorkerTimeoutThreadShutdown", iMainMsgQtoWrkShutdown);
	setQPROP(queueSettoEnq, "$MainMsgQueueTimeoutEnqueue", iMainMsgQtoEnq);
	setQPROP(queueSetiHighWtrMrk, "$MainMsgQueueHighWaterMark", iMainMsgQHighWtrMark);
	setQPROP(queueSetiLowWtrMrk, "$MainMsgQueueLowWaterMark", iMainMsgQLowWtrMark);
	setQPROP(queueSetiDiscardMrk, "$MainMsgQueueDiscardMark", iMainMsgQDiscardMark);
	setQPROP(queueSetiDiscardSeverity, "$MainMsgQueueDiscardSeverity", iMainMsgQDiscardSeverity);
	setQPROP(queueSetiMinMsgsPerWrkr, "$MainMsgQueueWorkerThreadMinimumMessages", iMainMsgQWrkMinMsgs);
	setQPROP(queueSetbSaveOnShutdown, "$MainMsgQueueSaveOnShutdown", bMainMsgQSaveOnShutdown);
	setQPROP(queueSetiDeqSlowdown, "$MainMsgQueueDequeueSlowdown", iMainMsgQDeqSlowdown);
	setQPROP(queueSetiDeqtWinFromHr,  "$MainMsgQueueDequeueTimeBegin", iMainMsgQueueDeqtWinFromHr);
	setQPROP(queueSetiDeqtWinToHr,    "$MainMsgQueueDequeueTimeEnd", iMainMsgQueueDeqtWinToHr);

#	undef setQPROP
#	undef setQPROPstr

	/* ... and finally start the queue! */
	CHKiRet_Hdlr(queueStart(pMsgQueue)) {
		/* no queue is fatal, we need to give up in that case... */
		fprintf(stderr, "fatal error %d: could not start message queue - rsyslogd can not run!\n", iRet);
		exit(1);
	}

	bHaveMainQueue = (MainMsgQueType == QUEUETYPE_DIRECT) ? 0 : 1;
	dbgprintf("Main processing queue is initialized and running\n");

	/* the output part and the queue is now ready to run. So it is a good time
	 * to start the inputs. Please note that the net code above should be
	 * shuffled to down here once we have everything in input modules.
	 * rgerhards, 2007-12-14
	 */
	startInputModules();

	if(Debug) {
		dbgPrintInitInfo();
	}

	/* we now generate the startup message. It now includes everything to
	 * identify this instance. -- rgerhards, 2005-08-17
	 */
	snprintf(bufStartUpMsg, sizeof(bufStartUpMsg)/sizeof(char), 
		 " [origin software=\"rsyslogd\" " "swVersion=\"" VERSION \
		 "\" x-pid=\"%d\" x-info=\"http://www.rsyslog.com\"] restart",
		 (int) myPid);
	logmsgInternal(NO_ERRCODE, LOG_SYSLOG|LOG_INFO, (uchar*)bufStartUpMsg, ADDDATE);

	memset(&sigAct, 0, sizeof (sigAct));
	sigemptyset(&sigAct.sa_mask);
	sigAct.sa_handler = sighup_handler;
	sigaction(SIGHUP, &sigAct, NULL);

	dbgprintf(" (re)started.\n");

finalize_it:
	RETiRet;
}


/* add a completely-processed selector (after config line parsing) to
 * the linked list of selectors. We now need to check
 * if it has any actions associated and, if so, link it to the linked
 * list. If it has nothing associated with it, we can simply discard
 * it.
 * We have one special case during initialization: then, the current
 * selector is NULL, which means we do not need to care about it at
 * all.  -- rgerhards, 2007-08-01
 */
rsRetVal
selectorAddList(selector_t *f)
{
	DEFiRet;
	int iActionCnt;

	static selector_t *nextp = NULL; /* TODO: make this go away (see comment below) */

	if(f != NULL) {
		CHKiRet(llGetNumElts(&f->llActList, &iActionCnt));
		if(iActionCnt == 0) {
			errmsg.LogError(0, NO_ERRCODE, "warning: selector line without actions will be discarded");
			selectorDestruct(f);
		} else {
			/* successfully created an entry */
			dbgprintf("selector line successfully processed\n");
			/* TODO: we should use the linked list class for the selector list, else we need to add globals
			 * ... well nextp could be added temporarily...
			 * Thanks to varmojfekoj for having the idea to just use "Files" to make this
			 * code work. I had actually forgotten to fix the code here before moving to 1.18.0.
			 * And, of course, I also did not migrate the selector_t structure to the linked list class.
			 * However, that should still be one of the very next things to happen.
			 * rgerhards, 2007-08-06
			 */
			if(Files == NULL) {
				Files = f;
			} else {
				nextp->f_next = f;
			}
			nextp = f;
		}
	}

finalize_it:
	RETiRet;
}


/* set the main message queue mode
 * rgerhards, 2008-01-03
 */
static rsRetVal setMainMsgQueType(void __attribute__((unused)) *pVal, uchar *pszType)
{
	DEFiRet;

	if (!strcasecmp((char *) pszType, "fixedarray")) {
		MainMsgQueType = QUEUETYPE_FIXED_ARRAY;
		dbgprintf("main message queue type set to FIXED_ARRAY\n");
	} else if (!strcasecmp((char *) pszType, "linkedlist")) {
		MainMsgQueType = QUEUETYPE_LINKEDLIST;
		dbgprintf("main message queue type set to LINKEDLIST\n");
	} else if (!strcasecmp((char *) pszType, "disk")) {
		MainMsgQueType = QUEUETYPE_DISK;
		dbgprintf("main message queue type set to DISK\n");
	} else if (!strcasecmp((char *) pszType, "direct")) {
		MainMsgQueType = QUEUETYPE_DIRECT;
		dbgprintf("main message queue type set to DIRECT (no queueing at all)\n");
	} else {
		errmsg.LogError(0, RS_RET_INVALID_PARAMS, "unknown mainmessagequeuetype parameter: %s", (char *) pszType);
		iRet = RS_RET_INVALID_PARAMS;
	}
	free(pszType); /* no longer needed */

	RETiRet;
}


/*
 * The following function is resposible for handling a SIGHUP signal.  Since
 * we are now doing mallocs/free as part of init we had better not being
 * doing this during a signal handler.  Instead this function simply sets
 * a flag variable which will tell the main loop to go through a restart.
 */
void sighup_handler()
{
	struct sigaction sigAct;
	
	restart = 1;

	memset(&sigAct, 0, sizeof (sigAct));
	sigemptyset(&sigAct.sa_mask);
	sigAct.sa_handler = sighup_handler;
	sigaction(SIGHUP, &sigAct, NULL);

	return;
}


/* this function pulls all internal messages from the buffer
 * and puts them into the processing engine.
 * We can only do limited error handling, as this would not
 * really help us. TODO: add error messages?
 * rgerhards, 2007-08-03
 */
static void processImInternal(void)
{
	int iPri;
	int iFlags;
	msg_t *pMsg;

	while(iminternalRemoveMsg(&iPri, &pMsg, &iFlags) == RS_RET_OK) {
		logmsg(pMsg, iFlags);
	}
}


/* This is the main processing loop. It is called after successful initialization.
 * When it returns, the syslogd terminates.
 * Its sole function is to provide some housekeeping things. The real work is done
 * by the other threads spawned.
 */
static void
mainloop(void)
{
	struct timeval tvSelectTimeout;

	BEGINfunc
	/* first check if we have any internal messages queued and spit them out. We used
	 * to do that on any loop iteration, but that is no longer necessry. The reason
	 * is that once we reach this point here, we always run on multiple threads and
	 * thus the main queue is properly initialized. -- rgerhards, 2008-06-09
	 */
	processImInternal();

	while(!bFinished){
		/* this is now just a wait - please note that we do use a near-"eternal"
		 * timeout of 1 day if we do not have repeated message reduction turned on
		 * (which it is not by default). This enables us to help safe the environment
		 * by not unnecessarily awaking rsyslog on a regular tick (just think
		 * powertop, for example). In that case, we primarily wait for a signal,
		 * but a once-a-day wakeup should be quite acceptable. -- rgerhards, 2008-06-09
		 */
		tvSelectTimeout.tv_sec = (bReduceRepeatMsgs == 1) ? TIMERINTVL : 86400 /*1 day*/;
		tvSelectTimeout.tv_usec = 0;
		select(1, NULL, NULL, NULL, &tvSelectTimeout);
		if(bFinished)
			break;	/* exit as quickly as possible - see long comment below */

		/* If we received a HUP signal, we call doFlushRptdMsgs() a bit early. This
 		 * doesn't matter, because doFlushRptdMsgs() checks timestamps. What may happen,
 		 * however, is that the too-early call may lead to a bit too-late output
 		 * of "last message repeated n times" messages. But that is quite acceptable.
 		 * rgerhards, 2007-12-21
		 * ... and just to explain, we flush here because that is exactly what the mainloop
		 * shall do - provide a periodic interval in which not-yet-flushed messages will
		 * be flushed. Be careful, there is a potential race condition: doFlushRptdMsgs()
		 * needs to aquire a lock on the action objects. If, however, long-running consumers
		 * cause the main queue worker threads to lock them for a long time, we may receive
		 * a starvation condition, resulting in the mainloop being held on lock for an extended
		 * period of time. That, in turn, could lead to unresponsiveness to termination
		 * requests. It is especially important that the bFinished flag is checked before
		 * doFlushRptdMsgs() is called (I know because I ran into that situation). I am
		 * not yet sure if the remaining probability window of a termination-related
		 * problem is large enough to justify changing the code - I would consider it
		 * extremely unlikely that the problem ever occurs in practice. Fixing it would
		 * require not only a lot of effort but would cost considerable performance. So
		 * for the time being, I think the remaining risk can be accepted.
		 * rgerhards, 2008-01-10
 		 */
		if(bReduceRepeatMsgs == 1)
			doFlushRptdMsgs();

		if(restart) {
			dbgprintf("\nReceived SIGHUP, reloading rsyslogd.\n");
			/* main queue is stopped as part of init() */
			init();
			restart = 0;
			continue;
		}
	}
	ENDfunc
}

/* If user is not root, prints warnings or even exits 
 * TODO: check all dynafiles for write permission
 * ... but it is probably better to wait here until we have
 * a module interface - rgerhards, 2007-07-23
 */
static void checkPermissions()
{
#if 0
	/* TODO: this function must either be redone or removed - now with the input modules,
	 * there is no such simple check we can do. What we can check, however, is if there is
	 * any input module active and terminate, if not. -- rgerhards, 2007-12-26
	 */
	/* we are not root */
	if (geteuid() != 0)
	{
		fputs("WARNING: Local messages will not be logged! If you want to log them, run rsyslog as root.\n",stderr); 
#ifdef SYSLOG_INET	
		/* udp enabled and port number less than or equal to 1024 */
		if ( AcceptRemote && (atoi(LogPort) <= 1024) )
			fprintf(stderr, "WARNING: Will not listen on UDP port %s. Use port number higher than 1024 or run rsyslog as root!\n", LogPort);
		
		/* tcp enabled and port number less or equal to 1024 */
		if( bEnableTCP   && (atoi(TCPLstnPort) <= 1024) )
			fprintf(stderr, "WARNING: Will not listen on TCP port %s. Use port number higher than 1024 or run rsyslog as root!\n", TCPLstnPort);

		/* Neither explicit high UDP port nor explicit high TCP port.
                 * It is useless to run anymore */
		if( !(AcceptRemote && (atoi(LogPort) > 1024)) && !( bEnableTCP && (atoi(TCPLstnPort) > 1024)) )
		{
#endif
			fprintf(stderr, "ERROR: Nothing to log, no reason to run. Please run rsyslog as root.\n");
			exit(EXIT_FAILURE);
#ifdef SYSLOG_INET
		}
#endif
	}
#endif
}


/* load build-in modules
 * very first version begun on 2007-07-23 by rgerhards
 */
static rsRetVal loadBuildInModules(void)
{
	DEFiRet;

	if((iRet = module.doModInit(modInitFile, (uchar*) "builtin-file", NULL)) != RS_RET_OK) {
		RETiRet;
	}
#ifdef SYSLOG_INET
	if((iRet = module.doModInit(modInitFwd, (uchar*) "builtin-fwd", NULL)) != RS_RET_OK) {
		RETiRet;
	}
#endif
	if((iRet = module.doModInit(modInitShell, (uchar*) "builtin-shell", NULL)) != RS_RET_OK) {
		RETiRet;
	}
	if((iRet = module.doModInit(modInitDiscard, (uchar*) "builtin-discard", NULL)) != RS_RET_OK) {
		RETiRet;
	}

	/* dirty, but this must be for the time being: the usrmsg module must always be
	 * loaded as last module. This is because it processes any time of action selector.
	 * If we load it before other modules, these others will never have a chance of
	 * working with the config file. We may change that implementation so that a user name
	 * must start with an alnum, that would definitely help (but would it break backwards
	 * compatibility?). * rgerhards, 2007-07-23
	 * User names now must begin with:
	 *   [a-zA-Z0-9_.]
	 */
	if((iRet = module.doModInit(modInitUsrMsg, (uchar*) "builtin-usrmsg", NULL)) != RS_RET_OK)
		RETiRet;

	/* ok, initialization of the command handler probably does not 100% belong right in
	 * this space here. However, with the current design, this is actually quite a good
	 * place to put it. We might decide to shuffle it around later, but for the time
	 * being, the code has found its home here. A not-just-sideeffect of this decision
	 * is that rsyslog will terminate if we can not register our built-in config commands.
	 * This, I think, is the right thing to do. -- rgerhards, 2007-07-31
	 */
	CHKiRet(regCfSysLineHdlr((uchar *)"actionresumeretrycount", 0, eCmdHdlrInt, NULL, &glbliActionResumeRetryCount, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuefilename", 0, eCmdHdlrGetWord, NULL, &pszMainMsgQFName, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuesize", 0, eCmdHdlrInt, NULL, &iMainMsgQueueSize, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuehighwatermark", 0, eCmdHdlrInt, NULL, &iMainMsgQHighWtrMark, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuelowwatermark", 0, eCmdHdlrInt, NULL, &iMainMsgQLowWtrMark, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuediscardmark", 0, eCmdHdlrInt, NULL, &iMainMsgQDiscardMark, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuediscardseverity", 0, eCmdHdlrSeverity, NULL, &iMainMsgQDiscardSeverity, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuecheckpointinterval", 0, eCmdHdlrInt, NULL, &iMainMsgQPersistUpdCnt, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuetype", 0, eCmdHdlrGetWord, setMainMsgQueType, NULL, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueueworkerthreads", 0, eCmdHdlrInt, NULL, &iMainMsgQueueNumWorkers, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuetimeoutshutdown", 0, eCmdHdlrInt, NULL, &iMainMsgQtoQShutdown, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuetimeoutactioncompletion", 0, eCmdHdlrInt, NULL, &iMainMsgQtoActShutdown, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuetimeoutenqueue", 0, eCmdHdlrInt, NULL, &iMainMsgQtoEnq, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueueworketimeoutrthreadshutdown", 0, eCmdHdlrInt, NULL, &iMainMsgQtoWrkShutdown, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuedequeueslowdown", 0, eCmdHdlrInt, NULL, &iMainMsgQDeqSlowdown, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueueworkerthreadminimummessages", 0, eCmdHdlrInt, NULL, &iMainMsgQWrkMinMsgs, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuemaxfilesize", 0, eCmdHdlrSize, NULL, &iMainMsgQueMaxFileSize, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuemaxdiskspace", 0, eCmdHdlrSize, NULL, &iMainMsgQueMaxDiskSpace, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuesaveonshutdown", 0, eCmdHdlrBinary, NULL, &bMainMsgQSaveOnShutdown, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuedequeuetimebegin", 0, eCmdHdlrInt, NULL, &iMainMsgQueueDeqtWinFromHr, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"mainmsgqueuedequeuetimeend", 0, eCmdHdlrInt, NULL, &iMainMsgQueueDeqtWinToHr, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"repeatedmsgreduction", 0, eCmdHdlrBinary, NULL, &bReduceRepeatMsgs, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"actionexeconlywhenpreviousissuspended", 0, eCmdHdlrBinary, NULL, &bActExecWhenPrevSusp, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"actionexeconlyonceeveryinterval", 0, eCmdHdlrInt, NULL, &iActExecOnceInterval, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"actionresumeinterval", 0, eCmdHdlrInt, setActionResumeInterval, NULL, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"controlcharacterescapeprefix", 0, eCmdHdlrGetChar, NULL, &cCCEscapeChar, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"escapecontrolcharactersonreceive", 0, eCmdHdlrBinary, NULL, &bEscapeCCOnRcv, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"droptrailinglfonreception", 0, eCmdHdlrBinary, NULL, &bDropTrailingLF, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"template", 0, eCmdHdlrCustomHandler, conf.doNameLine, (void*)DIR_TEMPLATE, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"outchannel", 0, eCmdHdlrCustomHandler, conf.doNameLine, (void*)DIR_OUTCHANNEL, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"allowedsender", 0, eCmdHdlrCustomHandler, conf.doNameLine, (void*)DIR_ALLOWEDSENDER, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"modload", 0, eCmdHdlrCustomHandler, conf.doModLoad, NULL, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"includeconfig", 0, eCmdHdlrCustomHandler, conf.doIncludeLine, NULL, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"umask", 0, eCmdHdlrFileCreateMode, setUmask, NULL, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"debugprinttemplatelist", 0, eCmdHdlrBinary, NULL, &bDebugPrintTemplateList, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"debugprintmodulelist", 0, eCmdHdlrBinary, NULL, &bDebugPrintModuleList, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"debugprintcfsyslinehandlerlist", 0, eCmdHdlrBinary,
		 NULL, &bDebugPrintCfSysLineHandlerList, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"moddir", 0, eCmdHdlrGetWord, NULL, &pModDir, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, NULL, NULL));
	CHKiRet(regCfSysLineHdlr((uchar *)"errormessagestostderr", 0, eCmdHdlrBinary, NULL, &bErrMsgToStderr, NULL));

	/* now add other modules handlers (we should work on that to be able to do it in ClassInit(), but so far
	 * that is not possible). -- rgerhards, 2008-01-28
	 */
	CHKiRet(actionAddCfSysLineHdrl());

finalize_it:
	RETiRet;
}


/* print version and compile-time setting information.
 */
static void printVersion(void)
{
	printf("rsyslogd %s, ", VERSION);
	printf("compiled with:\n");
#ifdef FEATURE_REGEXP
	printf("\tFEATURE_REGEXP:\t\t\t\tYes\n");
#else
	printf("\tFEATURE_REGEXP:\t\t\t\tNo\n");
#endif
#ifndef	NOLARGEFILE
	printf("\tFEATURE_LARGEFILE:\t\t\tYes\n");
#else
	printf("\tFEATURE_LARGEFILE:\t\t\tNo\n");
#endif
#ifdef	USE_NETZIP
	printf("\tFEATURE_NETZIP (message compression):\tYes\n");
#else
	printf("\tFEATURE_NETZIP (message compression):\tNo\n");
#endif
#if defined(SYSLOG_INET) && defined(USE_GSSAPI)
	printf("\tGSSAPI Kerberos 5 support:\t\tYes\n");
#else
	printf("\tGSSAPI Kerberos 5 support:\t\tNo\n");
#endif
#ifndef	NDEBUG
	printf("\tFEATURE_DEBUG (debug build, slow code):\tYes\n");
#else
	printf("\tFEATURE_DEBUG (debug build, slow code):\tNo\n");
#endif
#ifdef	RTINST
	printf("\tRuntime Instrumentation (slow code):\tYes\n");
#else
	printf("\tRuntime Instrumentation (slow code):\tNo\n");
#endif
	printf("\nSee http://www.rsyslog.com for more information.\n");
}


/* This function is called after initial initalization. It is used to
 * move code out of the too-long main() function.
 * rgerhards, 2007-10-17
 */
static rsRetVal mainThread()
{
	DEFiRet;
	uchar *pTmp;

	/* Note: signals MUST be processed by the thread this code is running in. The reason
	 * is that we need to interrupt the select() system call. -- rgerhards, 2007-10-17
	 */

	/* initialize the build-in templates */
	pTmp = template_DebugFormat;
	tplAddLine("RSYSLOG_DebugFormat", &pTmp);
	pTmp = template_SyslogProtocol23Format;
	tplAddLine("RSYSLOG_SyslogProtocol23Format", &pTmp);
	pTmp = template_FileFormat; /* new format for files with high-precision stamp */
	tplAddLine("RSYSLOG_FileFormat", &pTmp);
	pTmp = template_TraditionalFileFormat;
	tplAddLine("RSYSLOG_TraditionalFileFormat", &pTmp);
	pTmp = template_WallFmt;
	tplAddLine(" WallFmt", &pTmp);
	pTmp = template_ForwardFormat;
	tplAddLine("RSYSLOG_ForwardFormat", &pTmp);
	pTmp = template_TraditionalForwardFormat;
	tplAddLine("RSYSLOG_TraditionalForwardFormat", &pTmp);
	pTmp = template_StdUsrMsgFmt;
	tplAddLine(" StdUsrMsgFmt", &pTmp);
	pTmp = template_StdDBFmt;
	tplAddLine(" StdDBFmt", &pTmp);
        pTmp = template_StdPgSQLFmt;
        tplLastStaticInit(tplAddLine(" StdPgSQLFmt", &pTmp));

	CHKiRet(init());

	if(Debug) {
		dbgprintf("Debugging enabled, SIGUSR1 to turn off debugging.\n");
		debugging_on = 1;
	}
	/* Send a signal to the parent so it can terminate.
	 */
	if (myPid != ppid)
		kill (ppid, SIGTERM);

	/* END OF INTIALIZATION
	 * ... but keep in mind that we might do a restart and thus init() might
	 * be called again. If that happens, we must shut down the worker thread,
	 * do the init() and then restart things.
	 * rgerhards, 2005-10-24
	 */
	dbgprintf("initialization completed, transitioning to regular run mode\n");

	mainloop();

finalize_it:
	RETiRet;
}


/* Method to initialize all global classes and use the objects that we need.
 * rgerhards, 2008-01-04
 * rgerhards, 2008-04-16: the actual initialization is now carried out by the runtime
 */
static rsRetVal
InitGlobalClasses(void)
{
	DEFiRet;
	char *pErrObj; /* tells us which object failed if that happens (useful for troubleshooting!) */

	/* Intialize the runtime system */
	pErrObj = "rsyslog runtime"; /* set in case the runtime errors before setting an object */
	CHKiRet(rsrtInit(&pErrObj, &obj));
	CHKiRet(rsrtSetErrLogger(submitErrMsg)); /* set out error handler */

	/* Now tell the system which classes we need ourselfs */
	pErrObj = "glbl";
	CHKiRet(objUse(glbl,     CORE_COMPONENT));
	pErrObj = "errmsg";
	CHKiRet(objUse(errmsg,   CORE_COMPONENT));
	pErrObj = "module";
	CHKiRet(objUse(module,   CORE_COMPONENT));
	pErrObj = "var";
	CHKiRet(objUse(var,      CORE_COMPONENT));
	pErrObj = "datetime";
	CHKiRet(objUse(datetime, CORE_COMPONENT));
	pErrObj = "vm";
	CHKiRet(objUse(vm,       CORE_COMPONENT));
	pErrObj = "expr";
	CHKiRet(objUse(expr,     CORE_COMPONENT));
	pErrObj = "conf";
	CHKiRet(objUse(conf,     CORE_COMPONENT));

	/* intialize some dummy classes that are not part of the runtime */
	pErrObj = "action";
	CHKiRet(actionClassInit());
	pErrObj = "template";
	CHKiRet(templateInit());

	/* TODO: the dependency on net shall go away! -- rgerhards, 2008-03-07 */
	pErrObj = "net";
	CHKiRet(objUse(net, LM_NET_FILENAME));

finalize_it:
	if(iRet != RS_RET_OK) {
		/* we know we are inside the init sequence, so we can safely emit
		 * messages to stderr. -- rgerhards, 2008-04-02
		 */
		fprintf(stderr, "Error during class init for object '%s' - failing...\n", pErrObj);
	}

	RETiRet;
}


/* Method to exit all global classes. We do not do any error checking here,
 * because that wouldn't help us at all. So better try to deinit blindly
 * as much as succeeds (which usually means everything will). We just must
 * be careful to do the de-init in the opposite order of the init, because
 * of the dependencies. However, its not as important this time, because
 * we have reference counting.
 * rgerhards, 2008-03-10
 */
static rsRetVal
GlobalClassExit(void)
{
	DEFiRet;

	/* first, release everything we used ourself */
	objRelease(net,      LM_NET_FILENAME);/* TODO: the dependency on net shall go away! -- rgerhards, 2008-03-07 */
	objRelease(conf,     CORE_COMPONENT);
	objRelease(expr,     CORE_COMPONENT);
	objRelease(vm,       CORE_COMPONENT);
	objRelease(var,      CORE_COMPONENT);
	objRelease(datetime, CORE_COMPONENT);

	/* TODO: implement the rest of the deinit */
#if 0
	CHKiRet(datetimeClassInit(NULL));
	CHKiRet(msgClassInit(NULL));
	CHKiRet(strmClassInit(NULL));
	CHKiRet(wtiClassInit(NULL));
	CHKiRet(wtpClassInit(NULL));
	CHKiRet(queueClassInit(NULL));
	CHKiRet(vmstkClassInit(NULL));
	CHKiRet(sysvarClassInit(NULL));
	CHKiRet(vmClassInit(NULL));
	CHKiRet(vmopClassInit(NULL));
	CHKiRet(vmprgClassInit(NULL));
	CHKiRet(ctok_tokenClassInit(NULL));
	CHKiRet(ctokClassInit(NULL));
	CHKiRet(exprClassInit(NULL));

	/* dummy "classes" */
	CHKiRet(actionClassInit());
	CHKiRet(templateInit());
#endif
	/* dummy "classes */
	strExit();

#if 0
	CHKiRet(objGetObjInterface(&obj)); /* this provides the root pointer for all other queries */
	/* the following classes were intialized by objClassInit() */
	CHKiRet(objUse(errmsg,   CORE_COMPONENT));
	CHKiRet(objUse(module,   CORE_COMPONENT));
#endif
	rsrtExit(); /* *THIS* *MUST/SHOULD?* always be the first class initilizer being called (except debug)! */

	RETiRet;
}


/* some support for command line option parsing. Any non-trivial options must be
 * buffered until the complete command line has been parsed. This is necessary to
 * prevent dependencies between the options. That, in turn, means we need to have
 * something that is capable of buffering options and there values. The follwing
 * functions handle that.
 * rgerhards, 2008-04-04
 */
typedef struct bufOpt {
	struct bufOpt *pNext;
	char optchar;
	char *arg;
} bufOpt_t;
static bufOpt_t *bufOptRoot = NULL;
static bufOpt_t *bufOptLast = NULL;

/* add option buffer */
static rsRetVal
bufOptAdd(char opt, char *arg)
{
	DEFiRet;
	bufOpt_t *pBuf;

	if((pBuf = malloc(sizeof(bufOpt_t))) == NULL)
		ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY);

	pBuf->optchar = opt;
	pBuf->arg = arg;
	pBuf->pNext = NULL;

	if(bufOptLast == NULL) {
		bufOptRoot = pBuf; /* then there is also no root! */
	} else {
		bufOptLast->pNext = pBuf;
	}
	bufOptLast = pBuf;

finalize_it:
	RETiRet;
}



/* remove option buffer from top of list, return values and destruct buffer itself.
 * returns RS_RET_END_OF_LINKEDLIST when no more options are present.
 * (we use int *opt instead of char *opt to keep consistent with getopt())
 */
static rsRetVal
bufOptRemove(int *opt, char **arg)
{
	DEFiRet;
	bufOpt_t *pBuf;

	if(bufOptRoot == NULL)
		ABORT_FINALIZE(RS_RET_END_OF_LINKEDLIST);
	pBuf = bufOptRoot;

	*opt = pBuf->optchar;
	*arg = pBuf->arg;

	bufOptRoot = pBuf->pNext;
	free(pBuf);

finalize_it:
	RETiRet;
}


/* global initialization, to be done only once and before the mainloop is started.
 * rgerhards, 2008-07-28 (extracted from realMain())
 */
static rsRetVal
doGlblProcessInit(void)
{
	struct sigaction sigAct;
	int num_fds;
	int i;
	DEFiRet;

	checkPermissions();
	thrdInit();

	if( !(Debug || NoFork) )
	{
		dbgprintf("Checking pidfile.\n");
		if (!check_pid(PidFile))
		{
			memset(&sigAct, 0, sizeof (sigAct));
			sigemptyset(&sigAct.sa_mask);
			sigAct.sa_handler = doexit;
			sigaction(SIGTERM, &sigAct, NULL);

			if (fork()) {
				/* Parent process
				 */
				sleep(300);
				/* Not reached unless something major went wrong.  5
				 * minutes should be a fair amount of time to wait.
				 * Please note that this procedure is important since
				 * the father must not exit before syslogd isn't
				 * initialized or the klogd won't be able to flush its
				 * logs.  -Joey
				 */
				exit(1); /* "good" exit - after forking, not diasabling anything */
			}
			num_fds = getdtablesize();
			for (i= 0; i < num_fds; i++)
				(void) close(i);
			untty();
		}
		else
		{
			fputs(" Already running.\n", stderr);
			exit(1); /* "good" exit, done if syslogd is already running */
		}
	}
	else
		debugging_on = 1;

	/* tuck my process id away */
	dbgprintf("Writing pidfile %s.\n", PidFile);
	if (!check_pid(PidFile))
	{
		if (!write_pid(PidFile))
		{
			fputs("Can't write pid.\n", stderr);
			exit(1); /* exit during startup - questionable */
		}
	}
	else
	{
		fputs("Pidfile (and pid) already exist.\n", stderr);
		exit(1); /* exit during startup - questionable */
	}
	myPid = getpid(); 	/* save our pid for further testing (also used for messages) */

	memset(&sigAct, 0, sizeof (sigAct));
	sigemptyset(&sigAct.sa_mask);

	sigAct.sa_handler = sigsegvHdlr;
	sigaction(SIGSEGV, &sigAct, NULL);
	sigAct.sa_handler = sigsegvHdlr;
	sigaction(SIGABRT, &sigAct, NULL);
	sigAct.sa_handler = doDie;
	sigaction(SIGTERM, &sigAct, NULL);
	sigAct.sa_handler = Debug ? doDie : SIG_IGN;
	sigaction(SIGINT, &sigAct, NULL);
	sigaction(SIGQUIT, &sigAct, NULL);
	sigAct.sa_handler = reapchild;
	sigaction(SIGCHLD, &sigAct, NULL);
	sigAct.sa_handler = Debug ? debug_switch : SIG_IGN;
	sigaction(SIGUSR1, &sigAct, NULL);
	sigAct.sa_handler = SIG_IGN;
	sigaction(SIGPIPE, &sigAct, NULL);
	sigaction(SIGXFSZ, &sigAct, NULL); /* do not abort if 2gig file limit is hit */

	RETiRet;
}


/* This is the main entry point into rsyslogd. Over time, we should try to
 * modularize it a bit more...
 */
int realMain(int argc, char **argv)
{	
	DEFiRet;

	register uchar *p;
	int ch;
	struct hostent *hent;
	extern int optind;
	extern char *optarg;
	int bEOptionWasGiven = 0;
	int bImUxSockLoaded = 0; /* already generated a $ModLoad imuxsock? */
	int iHelperUOpt;
	int bChDirRoot = 1; /* change the current working directory to "/"? */
	char *arg;	/* for command line option processing */
	uchar legacyConfLine[80];
	uchar *LocalHostName;
	uchar *LocalDomain;

	/* first, parse the command line options. We do not carry out any actual work, just
	 * see what we should do. This relieves us from certain anomalies and we can process
	 * the parameters down below in the correct order. For example, we must know the
	 * value of -M before we can do the init, but at the same time we need to have
	 * the base classes init before we can process most of the options. Now, with the
	 * split of functionality, this is no longer a problem. Thanks to varmofekoj for
	 * suggesting this algo.
	 * Note: where we just need to set some flags and can do so without knowledge
	 * of other options, we do this during the inital option processing. With later
	 * versions (if a dependency on -c option is introduced), we must move that code
	 * to other places, but I think it is quite appropriate and saves code to do this
	 * only when actually neeeded. 
	 * rgerhards, 2008-04-04
	 */
	while((ch = getopt(argc, argv, "46aAc:def:g:hi:l:m:M:nN:opqQr::s:t:u:vwx")) != EOF) {
		switch((char)ch) {
                case '4':
                case '6':
                case 'A':
                case 'a':
		case 'f': /* configuration file */
		case 'h':
		case 'i': /* pid file name */
		case 'l':
		case 'm': /* mark interval */
		case 'n': /* don't fork */
		case 'N': /* enable config verify mode */
                case 'o':
                case 'p':
		case 'q': /* add hostname if DNS resolving has failed */
		case 'Q': /* dont resolve hostnames in ACL to IPs */
		case 's':
		case 'u': /* misc user settings */
		case 'w': /* disable disallowed host warnings */
		case 'x': /* disable dns for remote messages */
			CHKiRet(bufOptAdd(ch, optarg));
			break;
		case 'c':		/* compatibility mode */
			iCompatibilityMode = atoi(optarg);
			break;
		case 'd': /* debug - must be handled now, so that debug is active during init! */
			Debug = 1;
			break;
		case 'e':		/* log every message (no repeat message supression) */
			fprintf(stderr, "note: -e option is no longer supported, every message is now logged by default\n");
			bEOptionWasGiven = 1;
			break;
		case 'g':		/* enable tcp gssapi logging */
#if defined(SYSLOG_INET) && defined(USE_GSSAPI)
			CHKiRet(bufOptAdd('g', optarg));
#else
			fprintf(stderr, "rsyslogd: -g not valid - not compiled with gssapi support");
#endif
			break;
		case 'M': /* default module load path -- this MUST be carried out immediately! */
			glblModPath = (uchar*) optarg;
			break;
		case 'r':		/* accept remote messages */
#ifdef SYSLOG_INET
			CHKiRet(bufOptAdd(ch, optarg));
#else
			fprintf(stderr, "rsyslogd: -r not valid - not compiled with network support\n");
#endif
			break;
		case 't':		/* enable tcp logging */
#ifdef SYSLOG_INET
			CHKiRet(bufOptAdd(ch, optarg));
#else
			fprintf(stderr, "rsyslogd: -t not valid - not compiled with network support\n");
#endif
			break;
		case 'v': /* MUST be carried out immediately! */
			printVersion();
			exit(0); /* exit for -v option - so this is a "good one" */
		case '?':              
		default:
			usage();
		}
	}

	if ((argc -= optind))
		usage();

	dbgprintf("rsyslogd %s startup, compatibility mode %d, module path '%s'\n",
		  VERSION, iCompatibilityMode, glblModPath == NULL ? "" : (char*)glblModPath);

	/* we are done with the initial option parsing and processing. Now we init the system. */

	ppid = getpid();

	CHKiRet_Hdlr(InitGlobalClasses()) {
		fprintf(stderr, "rsyslogd initializiation failed - global classes could not be initialized.\n"
				"Did you do a \"make install\"?\n"
				"Suggested action: run rsyslogd with -d -n options to see what exactly "
				"fails.\n");
		FINALIZE;
	}

	/* doing some core initializations */

	/* get our host and domain names - we need to do this early as we may emit
	 * error log messages, which need the correct hostname. -- rgerhards, 2008-04-04
	 */
	net.getLocalHostname(&LocalHostName);
	if((p = (uchar*)strchr((char*)LocalHostName, '.'))) {
		*p++ = '\0';
		LocalDomain = p;
	} else {
		LocalDomain = (uchar*)"";

		/* It's not clearly defined whether gethostname()
		 * should return the simple hostname or the fqdn. A
		 * good piece of software should be aware of both and
		 * we want to distribute good software.  Joey
		 *
		 * Good software also always checks its return values...
		 * If syslogd starts up before DNS is up & /etc/hosts
		 * doesn't have LocalHostName listed, gethostbyname will
		 * return NULL. 
		 */
		/* TODO: gethostbyname() is not thread-safe, but replacing it is
		 * not urgent as we do not run on multiple threads here. rgerhards, 2007-09-25
		 */
		hent = gethostbyname((char*)LocalHostName);
		if(hent) {
			free(LocalHostName);
			CHKmalloc(LocalHostName = (uchar*)strdup(hent->h_name));
				
			if((p = (uchar*)strchr((char*)LocalHostName, '.')))
			{
				*p++ = '\0';
				LocalDomain = p;
			}
		}
	}

	/* Convert to lower case to recognize the correct domain laterly */
	for(p = LocalDomain ; *p ; p++)
		*p = (char)tolower((int)*p);
	
	/* we now have our hostname and can set it inside the global vars.
	 * TODO: think if all of this would better be a runtime function
	 * rgerhards, 2008-04-17
	 */
	glbl.SetLocalHostName(LocalHostName);
	glbl.SetLocalDomain(LocalDomain);

	/* initialize the objects */
	if((iRet = modInitIminternal()) != RS_RET_OK) {
		fprintf(stderr, "fatal error: could not initialize errbuf object (error code %d).\n",
			iRet);
		exit(1); /* "good" exit, leaving at init for fatal error */
	}

	if((iRet = loadBuildInModules()) != RS_RET_OK) {
		fprintf(stderr, "fatal error: could not activate built-in modules. Error code %d.\n",
			iRet);
		exit(1); /* "good" exit, leaving at init for fatal error */
	}

	/* END core initializations - we now come back to carrying out command line options*/

	while((iRet = bufOptRemove(&ch, &arg)) == RS_RET_OK) {
		dbgprintf("deque option %c, optarg '%s'\n", ch, arg);
		switch((char)ch) {
                case '4':
	                glbl.SetDefPFFamily(PF_INET);
                        break;
                case '6':
                        glbl.SetDefPFFamily(PF_INET6);
                        break;
                case 'A':
                        send_to_all++;
                        break;
                case 'a':
			if(iCompatibilityMode < 3) {
				if(!bImUxSockLoaded) {
					legacyOptsEnq((uchar *) "ModLoad imuxsock");
					bImUxSockLoaded = 1;
				}
				snprintf((char *) legacyConfLine, sizeof(legacyConfLine), "addunixlistensocket %s", arg);
				legacyOptsEnq(legacyConfLine);
			} else {
				fprintf(stderr, "error -a is no longer supported, use module imuxsock instead");
			}
                        break;
		case 'f':		/* configuration file */
			ConfFile = (uchar*) arg;
			break;
		case 'g':		/* enable tcp gssapi logging */
			if(iCompatibilityMode < 3) {
				legacyOptsParseTCP(ch, arg);
			} else
				fprintf(stderr,	"-g option only supported in compatibility modes 0 to 2 - ignored\n");
			break;
		case 'h':
			if(iCompatibilityMode < 3) {
				errmsg.LogError(0, NO_ERRCODE, "WARNING: -h option is no longer supported - ignored");
			} else {
				usage(); /* for v3 and above, it simply is an error */
			}
			break;
		case 'i':		/* pid file name */
			PidFile = arg;
			break;
		case 'l':
			if(glbl.GetLocalHosts() != NULL) {
				fprintf (stderr, "rsyslogd: Only one -l argument allowed, the first one is taken.\n");
			} else {
				glbl.SetLocalHosts(crunch_list(arg));
			}
			break;
		case 'm':		/* mark interval */
			if(iCompatibilityMode < 3) {
				MarkInterval = atoi(arg) * 60;
			} else
				fprintf(stderr,
					"-m option only supported in compatibility modes 0 to 2 - ignored\n");
			break;
		case 'n':		/* don't fork */
			NoFork = 1;
			break;
		case 'N':		/* enable config verify mode */
			iConfigVerify = atoi(arg);
			break;
                case 'o':
			if(iCompatibilityMode < 3) {
				if(!bImUxSockLoaded) {
					legacyOptsEnq((uchar *) "ModLoad imuxsock");
					bImUxSockLoaded = 1;
				}
				legacyOptsEnq((uchar *) "OmitLocalLogging");
			} else {
				fprintf(stderr, "error -o is no longer supported, use module imuxsock instead");
			}
                        break;
                case 'p':
			if(iCompatibilityMode < 3) {
				if(!bImUxSockLoaded) {
					legacyOptsEnq((uchar *) "ModLoad imuxsock");
					bImUxSockLoaded = 1;
				}
				snprintf((char *) legacyConfLine, sizeof(legacyConfLine), "SystemLogSocketName %s", arg);
				legacyOptsEnq(legacyConfLine);
			} else {
				fprintf(stderr, "error -p is no longer supported, use module imuxsock instead");
			}
		case 'q':               /* add hostname if DNS resolving has failed */
		        *net.pACLAddHostnameOnFail = 1;
		        break;
		case 'Q':               /* dont resolve hostnames in ACL to IPs */
		        *net.pACLDontResolve = 1;
		        break;
		case 'r':		/* accept remote messages */
			if(iCompatibilityMode < 3) {
				legacyOptsEnq((uchar *) "ModLoad imudp");
				snprintf((char *) legacyConfLine, sizeof(legacyConfLine), "UDPServerRun %s", arg);
				legacyOptsEnq(legacyConfLine);
			} else
				fprintf(stderr, "-r option only supported in compatibility modes 0 to 2 - ignored\n");
			break;
		case 's':
			if(glbl.GetStripDomains() != NULL) {
				fprintf (stderr, "rsyslogd: Only one -s argument allowed, the first one is taken.\n");
			} else {
				glbl.SetStripDomains(crunch_list(arg));
			}
			break;
		case 't':		/* enable tcp logging */
			if(iCompatibilityMode < 3) {
				legacyOptsParseTCP(ch, arg);
			} else
				fprintf(stderr,	"-t option only supported in compatibility modes 0 to 2 - ignored\n");
			break;
		case 'u':		/* misc user settings */
			iHelperUOpt = atoi(arg);
			if(iHelperUOpt & 0x01)
				bParseHOSTNAMEandTAG = 0;
			if(iHelperUOpt & 0x02)
				bChDirRoot = 0;
			break;
		case 'w':		/* disable disallowed host warnigs */
			glbl.SetOption_DisallowWarning(0);
			break;
		case 'x':		/* disable dns for remote messages */
			glbl.SetDisableDNS(1);
			break;
		case '?':              
		default:
			usage();
		}
	}

	if(iRet != RS_RET_END_OF_LINKEDLIST)
		FINALIZE;

	if(iConfigVerify) {
		fprintf(stderr, "rsyslogd: version %s, config validation run (level %d), master config %s\n",
			VERSION, iConfigVerify, ConfFile);
	}

	if(bChDirRoot) {
		if(chdir("/") != 0)
			fprintf(stderr, "Can not do 'cd /' - still trying to run\n");
	}


	/* process compatibility mode settings */
	if(iCompatibilityMode < 3) {
		errmsg.LogError(0, NO_ERRCODE, "WARNING: rsyslogd is running in compatibility mode. Automatically "
		                            "generated config directives may interfer with your rsyslog.conf settings. "
					    "We suggest upgrading your config and adding -c3 as the first "
					    "rsyslogd option.");
		if(MarkInterval > 0) {
			legacyOptsEnq((uchar *) "ModLoad immark");
			snprintf((char *) legacyConfLine, sizeof(legacyConfLine), "MarkMessagePeriod %d", MarkInterval);
			legacyOptsEnq(legacyConfLine);
		}
		if(!bImUxSockLoaded) {
			legacyOptsEnq((uchar *) "ModLoad imuxsock");
		}
	}

	if(bEOptionWasGiven && iCompatibilityMode < 3) {
		errmsg.LogError(0, NO_ERRCODE, "WARNING: \"message repeated n times\" feature MUST be turned on in "
					    "rsyslog.conf - CURRENTLY EVERY MESSAGE WILL BE LOGGED. Visit "
					    "http://www.rsyslog.com/rptdmsgreduction to learn "
					    "more and cast your vote if you want us to keep this feature.");
	}

	if(!iConfigVerify)
		CHKiRet(doGlblProcessInit());

	CHKiRet(mainThread());

	/* do any de-init's that need to be done AFTER this comment */

	die(bFinished);
	
	thrdExit();

finalize_it:
	if(iRet == RS_RET_VALIDATION_RUN) {
		fprintf(stderr, "rsyslogd: End of config validation run. Bye.\n");
	} else if(iRet != RS_RET_OK) {
		fprintf(stderr, "rsyslogd run failed with error %d (see rsyslog.h "
				"or try http://www.rsyslog.com/e/%d to learn what that number means)\n", iRet, iRet*-1);
	}

	ENDfunc
	return 0;
}


/* This is the main entry point into rsyslogd. This must be a function in its own
 * right in order to intialize the debug system in a portable way (otherwise we would
 * need to have a statement before variable definitions.
 * rgerhards, 20080-01-28
 */
int main(int argc, char **argv)
{	
	dbgClassInit();
	return realMain(argc, argv);
}

/* vim:set ai:
 */