summaryrefslogtreecommitdiff
path: root/maintenance/fuzz-tester.php
blob: 18af4de45d32f57692619182afcaa20e93f8ed99 (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
<?php
/**
 * Performs fuzz-style testing of MediaWiki's parser and forms.
 *
 * Copyright © 2006 Nick Jenkins
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup Maintenance
 * @author Nick Jenkins ( http://nickj.org/ ).


Started: 18 May 2006.

Description:
  Performs fuzz-style testing of MediaWiki's parser and forms.

How:
  - Generate lots of nasty wiki text.
  - Ask the Parser to render that wiki text to HTML, or ask MediaWiki's forms
	to deal with that wiki text.
  - Check MediaWiki's output for problems.
  - Repeat.

Why:
  - To help find bugs.
  - To help find security issues, or potential security issues.

What type of problems are being checked for:
  - Unclosed tags.
  - Errors or interesting warnings from Tidy.
  - PHP errors / warnings / notices.
  - MediaWiki internal errors.
  - Very slow responses.
  - No response from apache.
  - Optionally checking for malformed HTML using the W3C validator.

Background:
  Many of the wikiFuzz class methods are a modified PHP port,
  of a "shameless" Python port, of LCAMTUF'S MANGELME:
  - http://www.securiteam.com/tools/6Z00N1PBFK.html
  - http://www.securityfocus.com/archive/1/378632/2004-10-15/2004-10-21/0

Video:
  There's an XviD video discussing this fuzz tester. You can get it from:
  http://files.nickj.org/MediaWiki/Fuzz-Testing-MediaWiki-xvid.avi

Requirements:
  To run this, you will need:
  - Command-line PHP5, with PHP-curl enabled (not all installations have this
	enabled - try "apt-get install php5-curl" if you're on Debian to install).
  - the Tidy standalone executable. ("apt-get install tidy").

Optional:
  - If you want to run the curl scripts, you'll need standalone curl installed
	("apt-get install curl")
  - For viewing the W3C validator output on a command line, the "html2text"
	program may be useful ("apt-get install html2text")

Saving tests and test results:
  Any of the fuzz tests which find problems are saved for later review.
  In order to help track down problems, tests are saved in a number of
  different formats. The default filename extensions and their meanings are:
  - ".test.php" : PHP script that reproduces just that one problem using PHP-Curl.
  - ".curl.sh"  : Shell script that reproduces that problem using standalone curl.
  - ".data.bin" : The serialized PHP data so that this script can re-run the test.
  - ".info.txt" : A human-readable text file with details of the field contents.

Wiki configuration for testing:
  You should make some additions to LocalSettings.php in order to catch the most
  errors. Note this configuration is for **TESTING PURPOSES ONLY**, and is IN NO
  WAY, SHAPE, OR FORM suitable for deployment on a hostile network. That said,
  personally I find these additions to be the most helpful for testing purposes:

  // --------- Start ---------
  // Everyone can do everything. Very useful for testing, yet useless for deployment.
  $wgGroupPermissions['*']['autoconfirmed']   = true;
  $wgGroupPermissions['*']['block']           = true;
  $wgGroupPermissions['*']['bot']             = true;
  $wgGroupPermissions['*']['delete']          = true;
  $wgGroupPermissions['*']['deletedhistory']  = true;
  $wgGroupPermissions['*']['deleterevision']  = true;
  $wgGroupPermissions['*']['editinterface']   = true;
  $wgGroupPermissions['*']['hiderevision']    = true;
  $wgGroupPermissions['*']['import']          = true;
  $wgGroupPermissions['*']['importupload']    = true;
  $wgGroupPermissions['*']['minoredit']       = true;
  $wgGroupPermissions['*']['move']            = true;
  $wgGroupPermissions['*']['patrol']          = true;
  $wgGroupPermissions['*']['protect']         = true;
  $wgGroupPermissions['*']['proxyunbannable'] = true;
  $wgGroupPermissions['*']['renameuser']      = true;
  $wgGroupPermissions['*']['reupload']        = true;
  $wgGroupPermissions['*']['reupload-shared'] = true;
  $wgGroupPermissions['*']['rollback']        = true;
  $wgGroupPermissions['*']['siteadmin']       = true;
  $wgGroupPermissions['*']['trackback']       = true;
  $wgGroupPermissions['*']['unwatchedpages']  = true;
  $wgGroupPermissions['*']['upload']          = true;
  $wgGroupPermissions['*']['userrights']      = true;
  $wgGroupPermissions['*']['renameuser']      = true;
  $wgGroupPermissions['*']['makebot']         = true;
  $wgGroupPermissions['*']['makesysop']       = true;

  // Enable weird and wonderful options:
							  // Increase default error reporting level.
  error_reporting (E_ALL);    // At a later date could be increased to E_ALL | E_STRICT
  $wgBlockOpenProxies = true; // Some block pages require this to be true in order to test.
  $wgEnableUploads = true;    // enable uploads.
  //$wgUseTrackbacks = true;  // enable trackbacks; However this breaks the viewPageTest, so currently disabled.
  $wgDBerrorLog = "/root/mediawiki-db-error-log.txt";  // log DB errors, replace with suitable path.
  $wgShowSQLErrors = true;    // Show SQL errors (instead of saying the query was hidden).
  $wgShowExceptionDetails = true;  // want backtraces.
  $wgEnableAPI = true;        // enable API.
  $wgEnableWriteAPI = true;   // enable API.

  // Install & enable Parser Hook extensions to increase code coverage. E.g.:
  require_once("extensions/ParserFunctions/ParserFunctions.php");
  require_once("extensions/Cite/Cite.php");
  require_once("extensions/inputbox/inputbox.php");
  require_once("extensions/Sort/Sort.php");
  require_once("extensions/wikihiero/wikihiero.php");
  require_once("extensions/CharInsert/CharInsert.php");
  require_once("extensions/FixedImage/FixedImage.php");

  // Install & enable Special Page extensions to increase code coverage. E.g.:
  require_once("extensions/Cite/SpecialCite.php");
  require_once("extensions/Filepath/SpecialFilepath.php");
  require_once("extensions/Makebot/Makebot.php");
  require_once("extensions/Makesysop/SpecialMakesysop.php");
  require_once("extensions/Renameuser/SpecialRenameuser.php");
  require_once("extensions/LinkSearch/LinkSearch.php");
  // --------- End ---------

  If you want to try E_STRICT error logging, add this to the above:
  // --------- Start ---------
  error_reporting (E_ALL | E_STRICT);
  set_error_handler( 'error_handler' );
  function error_handler ($type, $message, $file=__FILE__, $line=__LINE__) {
	 if ($message == "var: Deprecated. Please use the public/private/protected modifiers") return;
	 print "<br />\n<b>Strict Standards:</b> Type: <b>$type</b>:  $message in <b>$file</b> on line <b>$line</b><br />\n";
  }
  // --------- End ---------

  Also add/change this in LocalSettings.php:
  // --------- Start ---------
  $wgEnableProfileInfo = true;
  $wgDBserver = "localhost"; // replace with DB server hostname
  // --------- End ---------

Usage:
  Run with "php fuzz-tester.php".
  To see the various command-line options, run "php fuzz-tester.php --help".
  To stop the script, press Ctrl-C.

Console output:
  - If requested, first any previously failed tests will be rerun.
  - Then new tests will be generated and run. Any tests that fail will be saved,
	and a brief message about why they failed will be printed on the console.
  - The console will show the number of tests run, time run, number of tests
	failed, number of tests being done per minute, and the name of the current test.

TODO:
  Some known things that could improve this script:
  - Logging in with cookie jar storage needed for some tests (as there are some
	pages that cannot be tested without being logged in, and which are currently
	untested - e.g. Special:Emailuser, Special:Preferences, adding to Watchist).
  - Testing of Timeline extension (I cannot test as ploticus has/had issues on
	my architecture).

*/

// ///////////////////////// COMMAND LINE HELP ////////////////////////////////////

// This is a command line script, load MediaWiki env (gives command line options);
require_once( dirname( __FILE__ ) . '/commandLine.inc' );

// if the user asked for an explanation of command line options.
if ( isset( $options["help"] ) ) {
	print <<<ENDS
MediaWiki $wgVersion fuzz tester
Usage: php {$_SERVER["SCRIPT_NAME"]} [--quiet] [--base-url=<url-to-test-wiki>]
						   [--directory=<failed-test-path>] [--include-binary]
						   [--w3c-validate] [--delete-passed-retests] [--help]
						   [--user=<username>] [--password=<password>]
						   [--rerun-failed-tests] [--max-errors=<int>]
						   [--max-runtime=<num-minutes>]
						   [--specific-test=<test-name>]

Options:
  --quiet                 : Hides passed tests, shows only failed tests.
  --base-url              : URL to a wiki on which to run the tests.
							The "http://" is optional and can be omitted.
  --directory             : Full path to directory for storing failed tests.
							Will be created if it does not exist.
  --include-binary        : Includes non-alphanumeric characters in the tests.
  --w3c-validate          : Validates pages using the W3C's web validator.
							Slow. Currently many pages fail validation.
  --user                  : Login name of a valid user on your test wiki.
  --password              : Password for the valid user on your test wiki.
  --delete-passed-retests : Will delete retests that now pass.
							Requires --rerun-failed-tests to be meaningful.
  --rerun-failed-tests    : Whether to rerun any previously failed tests.
  --max-errors            : Maximum number of errors to report before exiting.
							Does not include errors from --rerun-failed-tests
  --max-runtime           : Maximum runtime, in minutes, to run before exiting.
							Only applies to new tests, not --rerun-failed-tests
  --specific-test         : Runs only the specified fuzz test.
							Only applies to new tests, not --rerun-failed-tests
  --keep-passed-tests     : Saves all test files, even those that pass.
  --help                  : Show this help message.

Example:
  If you wanted to fuzz test a nightly MediaWiki checkout using cron for 1 hour,
  and only wanted to be informed of errors, and did not want to redo previously
  failed tests, and wanted a maximum of 100 errors, then you could do:
  php {$_SERVER["SCRIPT_NAME"]} --quiet --max-errors=100 --max-runtime=60


ENDS;

	exit( 0 );
}


// if we got command line options, check they look valid.
$validOptions = array ( "quiet", "base-url", "directory", "include-binary",
		"w3c-validate", "user", "password", "delete-passed-retests",
		"rerun-failed-tests", "max-errors",
		"max-runtime", "specific-test", "keep-passed-tests", "help" );
if ( !empty( $options ) ) {
	$unknownArgs = array_diff ( array_keys( $options ), $validOptions );
	foreach ( $unknownArgs as $invalidArg ) {
		print "Ignoring invalid command-line option: --$invalidArg\n";
	}
}


// /////////////////////////// CONFIGURATION ////////////////////////////////////

// URL to some wiki on which we can run our tests.
if ( !empty( $options["base-url"] ) ) {
	define( "WIKI_BASE_URL", $options["base-url"] );
} else {
	define( "WIKI_BASE_URL", $wgServer . $wgScriptPath . '/' );
}

// The directory name where we store the output.
// Example for Windows: "c:\\temp\\wiki-fuzz"
if ( !empty( $options["directory"] ) ) {
	define( "DIRECTORY", $options["directory"] );
} else {
	define( "DIRECTORY", "{$wgUploadDirectory}/fuzz-tests" );
}

// Should our test fuzz data include binary strings?
define( "INCLUDE_BINARY",  isset( $options["include-binary"] ) );

// Whether we want to validate HTML output on the web.
// At the moment very few generated pages will validate, so not recommended.
define( "VALIDATE_ON_WEB", isset( $options["w3c-validate"] ) );
// URL to use to validate our output:
define( "VALIDATOR_URL",  "http://validator.w3.org/check" );

// Location of Tidy standalone executable.
define( "PATH_TO_TIDY",  "/usr/bin/tidy" );

// The name of a user who has edited on your wiki. Used
// when testing the Special:Contributions and Special:Userlogin page.
if ( !empty( $options["user"] ) ) {
	define( "USER_ON_WIKI", $options["user"] );
} else {
	define( "USER_ON_WIKI", "nickj" );
}

// The password of the above user. Used when testing the login page,
// and to do this we sometimes need to login successfully.
if ( !empty( $options["password"] ) ) {
	define( "USER_PASSWORD", $options["password"] );
} else {
	// And no, this is not a valid password on any public wiki.
	define( "USER_PASSWORD", "nickj" );
}

// If we have a test that failed, and then we run it again, and it passes,
// do you want to delete it or keep it?
define( "DELETE_PASSED_RETESTS", isset( $options["delete-passed-retests"] ) );

// Do we want to rerun old saved tests at script startup?
// Set to true to help catch regressions, or false if you only want new stuff.
define( "RERUN_OLD_TESTS", isset( $options["rerun-failed-tests"] ) );

// File where the database errors are logged. Should be defined in LocalSettings.php.
define( "DB_ERROR_LOG_FILE", $wgDBerrorLog );

// Run in chatty mode (all output, default), or run in quiet mode (only prints out details of failed tests)?
define( "QUIET", isset( $options["quiet"] ) );

// Keep all test files, even those that pass. Potentially useful to tracking input that causes something
// unusual to happen, if you don't know what "unusual" is until later.
define( "KEEP_PASSED_TESTS", isset( $options["keep-passed-tests"] ) );

// The maximum runtime, if specified.
if ( !empty( $options["max-runtime"] ) && intval( $options["max-runtime"] ) > 0 ) {
	define( "MAX_RUNTIME", intval( $options["max-runtime"] ) );
}

// The maximum number of problems to find, if specified. Excludes retest errors.
if ( !empty( $options["max-errors"] ) && intval( $options["max-errors"] ) > 0 ) {
	define( "MAX_ERRORS", intval( $options["max-errors"] ) );
}

// if the user has requested a specific test (instead of all tests), and the test they asked for looks valid.
if ( !empty( $options["specific-test"] ) ) {
	if ( class_exists( $options["specific-test"] ) && get_parent_class( $options["specific-test"] ) == "pageTest" ) {
		define( "SPECIFIC_TEST", $options["specific-test"] );
	}
	else {
		print "Ignoring invalid --specific-test\n";
	}
}

// Define the file extensions we'll use:
define( "PHP_TEST" , ".test.php" );
define( "CURL_TEST", ".curl.sh" );
define( "DATA_FILE", ".data.bin" );
define( "INFO_FILE", ".info.txt" );
define( "HTML_FILE", ".wiki_preview.html" );

// If it goes wrong, we want to know about it.
error_reporting( E_ALL | E_STRICT );

// //////////////  A CLASS THAT GENERATES RANDOM NASTY WIKI & HTML STRINGS  //////////////////////

class wikiFuzz {

	// Only some HTML tags are understood with params by MediaWiki, the rest are ignored.
	// List the tags that accept params below, as well as what those params are.
	public static $data = array(
			"B"          => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"CAPTION"    => array( "CLASS", "ID", "STYLE", "align", "lang", "dir", "title" ),
			"CENTER"     => array( "CLASS", "STYLE", "ID", "lang", "dir", "title" ),
			"DIV"        => array( "CLASS", "STYLE", "ID", "align", "lang", "dir", "title" ),
			"FONT"       => array( "CLASS", "STYLE", "ID", "lang", "dir", "title", "face", "size", "color" ),
			"H1"         => array( "STYLE", "CLASS", "ID", "align", "lang", "dir", "title" ),
			"H2"         => array( "STYLE", "CLASS", "ID", "align", "lang", "dir", "title" ),
			"HR"         => array( "STYLE", "CLASS", "ID", "WIDTH", "lang", "dir", "title", "size", "noshade" ),
			"LI"         => array( "CLASS", "ID", "STYLE", "lang", "dir", "title", "type", "value" ),
			"TABLE"      => array( "STYLE", "CLASS", "ID", "BGCOLOR", "WIDTH", "ALIGN", "BORDER", "CELLPADDING",
								   "CELLSPACING", "lang", "dir", "title", "summary", "frame", "rules" ),
			"TD"         => array( "STYLE", "CLASS", "ID", "BGCOLOR", "WIDTH", "ALIGN", "COLSPAN", "ROWSPAN",
								  "VALIGN", "abbr", "axis", "headers", "scope", "nowrap", "height", "lang",
								  "dir", "title", "char", "charoff" ),
			"TH"         => array( "STYLE", "CLASS", "ID", "BGCOLOR", "WIDTH", "ALIGN", "COLSPAN", "ROWSPAN",
								  "VALIGN", "abbr", "axis", "headers", "scope", "nowrap", "height", "lang",
								  "dir", "title", "char", "charoff" ),
			"TR"         => array( "CLASS", "STYLE", "ID", "BGCOLOR", "ALIGN", "VALIGN", "lang", "dir", "title", "char", "charoff" ),
			"UL"         => array( "CLASS", "STYLE", "ID", "lang", "dir", "title", "type" ),
			"P"          => array( "style", "class", "id", "align", "lang", "dir", "title" ),
			"blockquote" => array( "CLASS", "ID", "STYLE", "lang", "dir", "title", "cite" ),
			"span"       => array( "CLASS", "ID", "STYLE", "align", "lang", "dir", "title" ),
			"code"       => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"tt"         => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"small"      => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"big"        => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"s"          => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"u"          => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"del"        => array( "CLASS", "ID", "STYLE", "lang", "dir", "title", "datetime", "cite" ),
			"ins"        => array( "CLASS", "ID", "STYLE", "lang", "dir", "title", "datetime", "cite" ),
			"sub"        => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"sup"        => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"ol"         => array( "CLASS", "ID", "STYLE", "lang", "dir", "title", "type", "start" ),
			"br"         => array( "CLASS", "ID", "STYLE", "title", "clear" ),
			"cite"       => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"var"        => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"dl"         => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"ruby"       => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"rt"         => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"rp"         => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"dt"         => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"dl"         => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"em"         => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"strong"     => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"i"          => array( "CLASS", "ID", "STYLE", "lang", "dir", "title" ),
			"thead"      => array( "CLASS", "ID", "STYLE", "lang", "dir", "title",  'align', 'char', 'charoff', 'valign' ),
			"tfoot"      => array( "CLASS", "ID", "STYLE", "lang", "dir", "title",  'align', 'char', 'charoff', 'valign' ),
			"tbody"      => array( "CLASS", "ID", "STYLE", "lang", "dir", "title",  'align', 'char', 'charoff', 'valign' ),
			"colgroup"   => array( "CLASS", "ID", "STYLE", "lang", "dir", "title",  'align', 'char', 'charoff', 'valign', 'span', 'width' ),
			"col"        => array( "CLASS", "ID", "STYLE", "lang", "dir", "title",  'align', 'char', 'charoff', 'valign', 'span', 'width' ),
			"pre"        => array( "CLASS", "ID", "STYLE", "lang", "dir", "title", "width" ),

			// extension tags that accept parameters:
			"sort"         => array( "order", "class" ),
			"ref"          => array( "name" ),
			"categorytree" => array( "hideroot", "mode", "style" ),
			"chemform"     => array( "link", "wikilink", "query" ),
			"section"      => array( "begin", "new" ),

			// older MW transclusion.
			"transclude"   => array( "page" ),
				);

	// The types of the HTML that we will be testing were defined above
	// Note: this needs to be initialized later to be equal to: array_keys(wikiFuzz::$data);
	// as such, it also needs to also be publicly modifiable.
	public static $types;


	// Some attribute values.
	static private $other = array( "&", "=", ":", "?", "\"", "\n", "%n%n%n%n%n%n%n%n%n%n%n%n", "\\" );
	static private $ints  = array(
			// various numbers
			"0", "-1", "127", "-7897", "89000", "808080", "90928345",
			"0xfffffff", "ffff",

			// Different ways of saying: '
			"&#0000039;", // Long UTF-8 Unicode encoding
			"&#39;",  // dec version.
			"&#x27;", // hex version.
			"&#xA7;", // malformed hex variant, MSB not zero.

			// Different ways of saying: "
			"&#0000034;", // Long UTF-8 Unicode encoding
			"&#34;",
			"&#x22;", // hex version.
			"&#xA2;", // malformed hex variant, MSB not zero.

			// Different ways of saying: <
			"<",
			"&#0000060",  // Long UTF-8 Unicode encoding without semicolon (Mediawiki wants the colon)
			"&#0000060;", // Long UTF-8 Unicode encoding with semicolon
			"&#60;",
			"&#x3C;",     // hex version.
			"&#xBC;",     // malformed hex variant, MSB not zero.
			"&#x0003C;",  // mid-length hex version
			"&#X00003C;", // slightly longer hex version, with capital "X"

			// Different ways of saying: >
			">",
			"&#0000062;", // Long UTF-8 Unicode encoding
			"&#62;",
			"&#x3E;",     // hex version.
			"&#xBE;",     // malformed variant, MSB not zero.

			// Different ways of saying: [
			"&#0000091;", // Long UTF-8 Unicode encoding
			"&#91;",
			"&#x5B;",     // hex version.

			// Different ways of saying: {{
			"&#0000123;&#0000123;", // Long UTF-8 Unicode encoding
			"&#123;&#123;",
			"&#x7B;&#x7B;",         // hex version.

			// Different ways of saying: |
			"&#0000124;", // Long UTF-8 Unicode encoding
			"&#124;",
			"&#x7C;",     // hex version.
			"&#xFC;",     // malformed hex variant, MSB not zero.

			// a "lignature" - http://www.robinlionheart.com/stds/html4/spchars#ligature
			// &#8204; == &zwnj;
			"&#8204;"
				);

	// Defines various wiki-related bits of syntax, that can potentially cause
	// MediaWiki to do something other than just print that literal text.
	static private $ext = array(
			// links, templates, parameters.
			"[[", "]]", "{{", "}}", "|", "[", "]", "{{{", "}}}", "|]]",

			// wiki tables.
			"\n{|", "\n|}",
			"!",
			"\n!",
			"!!",
			"||",
			"\n|-", "| ", "\n|",

			// section headings.
			"=", "==", "===", "====", "=====", "======",

			// lists (ordered and unordered) and indentation.
			"\n*", "*", "\n:", ":",
			"\n#", "#",

			// definition lists (dl, dt, dd), newline, and newline with pre, and a tab.
			"\n;", ";", "\n ",

			// Whitespace: newline, tab, space.
			"\n", "\t", " ",

			// Some XSS attack vectors from http://ha.ckers.org/xss.html
			"&#x09;", // tab
			"&#x0A;", // newline
			"&#x0D;", // carriage return
			"\0",     // null character
			" &#14; ", // spaces and meta characters
			"'';!--\"<XSS>=&{()}", // compact injection of XSS & SQL tester

			// various NULL fields
			"%00",
			"&#00;",
			"\0",

			// horizontal rule.
			"-----", "\n-----",

			// signature, redirect, bold, italics.
			"~~~~", "#REDIRECT [[", "'''", "''",

			// comments.
			"<!--", "-->",

			// quotes.
			"\"", "'",

			// tag start and tag end.
			"<", ">",

			// implicit link creation on URIs.
			"http://",
			"https://",
			"ftp://",
			"irc://",
			"news:",
			'gopher://',
			'telnet://',
			'nntp://',
			'worldwind://',
			'mailto:',

			// images.
			"[[image:",
			".gif",
			".png",
			".jpg",
			".jpeg",
			'thumbnail=',
			'thumbnail',
			'thumb=',
			'thumb',
			'right',
			'none',
			'left',
			'framed',
			'frame',
			'enframed',
			'centre',
			'center',
			"Image:",
			"[[:Image",
			'px',
			'upright=',
			'border',

			// misc stuff to throw at the Parser.
			'%08X',
			'/',
			":x{|",
			"\n|+",
			"<noinclude>",
			"</noinclude>",
			" \302\273",
			" :",
			" !",
			" ;",
			"\302\253",
			"[[category:",
			"?=",
			"(",
			")",
			"]]]",
			"../",
			"{{{{",
			"}}}}",
			"[[Special:",
			"<includeonly>",
			"</includeonly>",
			"<!--MWTEMPLATESECTION=",
			'<!--MWTOC-->',

			// implicit link creation on booknum, RFC, and PubMed ID usage (both with and without IDs)
			"ISBN 2",
			"RFC 000",
			"PMID 000",
			"ISBN ",
			"RFC ",
			"PMID ",

			// magic words:
			'__NOTOC__',
			'__FORCETOC__',
			'__NOEDITSECTION__',
			'__START__',
			'__NOTITLECONVERT__',
			'__NOCONTENTCONVERT__',
			'__END__',
			'__TOC__',
			'__NOTC__',
			'__NOCC__',
			"__FORCETOC__",
			"__NEWSECTIONLINK__",
			"__NOGALLERY__",

			// more magic words / internal templates.
			'{{PAGENAME}}',
			'{{PAGENAMEE}}',
			'{{NAMESPACE}}',
			"{{MSG:",
			"}}",
			"{{MSGNW:",
			"}}",
			"{{INT:",
			"}}",
			'{{SITENAME}}',
			"{{NS:",
			"}}",
			"{{LOCALURL:",
			"}}",
			"{{LOCALURLE:",
			"}}",
			"{{SCRIPTPATH}}",
			"{{GRAMMAR:gentiv|",
			"}}",
			"{{REVISIONID}}",
			"{{SUBPAGENAME}}",
			"{{SUBPAGENAMEE}}",
			"{{ns:0}}",
			"{{fullurle:",
			"}}",
			"{{subst::",
			"}}",
			"{{UCFIRST:",
			"}}",
			"{{UC:",
			'{{SERVERNAME}}',
			'{{SERVER}}',
			"{{RAW:",
			"}}",
			"{{PLURAL:",
			"}}",
			"{{LCFIRST:",
			"}}",
			"{{LC:",
			"}}",
			'{{CURRENTWEEK}}',
			'{{CURRENTDOW}}',
			"{{INT:{{LC:contribs-showhideminor}}|",
			"}}",
			"{{INT:googlesearch|",
			"}}",
			"{{BASEPAGENAME}}",
			"{{CONTENTLANGUAGE}}",
			"{{PAGESINNAMESPACE:}}",
			"{{#language:",
			"}}",
			"{{#special:",
			"}}",
			"{{#special:emailuser",
			"}}",

			// Some raw link for magic words.
			"{{NUMBEROFPAGES:R",
			"}}",
			"{{NUMBEROFUSERS:R",
			"}}",
			"{{NUMBEROFARTICLES:R",
			"}}",
			"{{NUMBEROFFILES:R",
			"}}",
			"{{NUMBEROFADMINS:R",
			"}}",
			"{{padleft:",
			"}}",
			"{{padright:",
			"}}",
			"{{DEFAULTSORT:",
			"}}",

			// internal Math "extension":
			"<math>",
			"</math>",

			// Parser extension functions:
			"{{#expr:",
			"{{#if:",
			"{{#ifeq:",
			"{{#ifexist:",
			"{{#ifexpr:",
			"{{#switch:",
			"{{#time:",
			"}}",

			// references table for the Cite extension.
			"<references/>",

			// Internal Parser tokens - try inserting some of these.
			"UNIQ25f46b0524f13e67NOPARSE",
			"UNIQ17197916557e7cd6-HTMLCommentStrip46238afc3bb0cf5f00000002",
			"\x07UNIQ17197916557e7cd6-HTMLCommentStrip46238afc3bb0cf5f00000002-QINU",

			// Inputbox extension:
			"<inputbox>\ntype=search\nsearchbuttonlabel=\n",
			"</inputbox>",

			// charInsert extension:
			"<charInsert>",
			"</charInsert>",

			// wikiHiero extension:
			"<hiero>",
			"</hiero>",

			// Image gallery:
			"<gallery>",
			"</gallery>",

			// FixedImage extension.
			"<fundraising/>",

			// Timeline extension: currently untested.

			// Nowiki:
			"<nOwIkI>",
			"</nowiki>",

			// an external image to test the external image displaying code
			"http://debian.org/Pics/debian.png",

			// LabeledSectionTransclusion extension.
			"{{#lstx:",
			"}}",
			"{{#lst:",
			"}}",
			"{{#lst:Main Page|",
			"}}"
			);

	/**
	 ** Randomly returns one element of the input array.
	 */
	static public function chooseInput( array $input ) {
		$randindex = wikiFuzz::randnum( count( $input ) - 1 );
		return $input[$randindex];
	}

	// Max number of parameters for HTML attributes.
	static private $maxparams = 10;

	/**
	 ** Returns random number between finish and start.
	 */
	static public function randnum( $finish, $start = 0 ) {
		return mt_rand( $start, $finish );
	}

	/**
	 ** Returns a mix of random text and random wiki syntax.
	 */
	static private function randstring() {
		$thestring = "";

		for ( $i = 0; $i < 40; $i++ ) {
			$what = wikiFuzz::randnum( 1 );

			if ( $what == 0 ) { // include some random wiki syntax
				$which = wikiFuzz::randnum( count( wikiFuzz::$ext ) - 1 );
				$thestring .= wikiFuzz::$ext[$which];
			}
			else { // include some random text
				$char = INCLUDE_BINARY
					// Decimal version:
					// "&#" . wikiFuzz::randnum(255) . ";"
					// Hex version:
					? "&#x" . str_pad( dechex( wikiFuzz::randnum( 255 ) ), wikiFuzz::randnum( 2, 7 ), "0", STR_PAD_LEFT ) . ";"
					// A truly binary version:
					// ? chr(wikiFuzz::randnum(0,255))
					: chr( wikiFuzz::randnum( 126, 32 ) );

				$length = wikiFuzz::randnum( 8 );
				$thestring .= str_repeat ( $char, $length );
			}
		}
		return $thestring;
	}

	/**
	 ** Returns either random text, or random wiki syntax, or random data from "ints",
	 **        or random data from "other".
	 */
	static private function makestring() {
		$what = wikiFuzz::randnum( 2 );
		if ( $what == 0 ) {
			return wikiFuzz::randstring();
		}
		elseif ( $what == 1 ) {
			return wikiFuzz::$ints[wikiFuzz::randnum( count( wikiFuzz::$ints ) - 1 )];
		}
		else {
			return wikiFuzz::$other[wikiFuzz::randnum( count( wikiFuzz::$other ) - 1 )];
		}
	}

	/**
	 * Returns the matched character slash-escaped as in a C string
	 * Helper for makeTitleSafe callback
	 */
	static private function stringEscape( $matches ) {
		return sprintf( "\\x%02x", ord( $matches[1] ) );
	}

	/**
	 ** Strips out the stuff that Mediawiki balks at in a page's title.
	 **        Implementation copied/pasted from cleanupTable.inc & cleanupImages.php
	 */
	static public function makeTitleSafe( $str ) {
		$legalTitleChars = " %!\"$&'()*,\\-.\\/0-9:;=?@A-Z\\\\^_`a-z~\\x80-\\xFF";
		return preg_replace_callback(
				"/([^$legalTitleChars])/", 'wikiFuzz::stringEscape',
				$str );
	}

	/**
	 ** Returns a string of fuzz text.
	 */
	static private function loop() {
		switch ( wikiFuzz::randnum( 3 ) ) {
			case 1: // an opening tag, with parameters.
				$string = "";
				$i = wikiFuzz::randnum( count( wikiFuzz::$types ) - 1 );
				$t = wikiFuzz::$types[$i];
				$arr = wikiFuzz::$data[$t];
				$string .= "<" . $t . " ";
				$num_params = min( wikiFuzz::$maxparams, count( $arr ) );
				for ( $z = 0; $z < $num_params; $z++ ) {
					$badparam = $arr[wikiFuzz::randnum( count( $arr ) - 1 )];
					$badstring = wikiFuzz::makestring();
					$string .= $badparam . "=" . wikiFuzz::getRandQuote() . $badstring . wikiFuzz::getRandQuote() . " ";
				}
				$string .= ">\n";
				return $string;
			case 2: // a closing tag.
				$i = wikiFuzz::randnum( count( wikiFuzz::$types ) - 1 );
				return "</" . wikiFuzz::$types[$i] . ">";
			case 3: // a random string, between tags.
				return wikiFuzz::makeString();
		}
		return "";    // catch-all, should never be called.
	}

	/**
	 ** Returns one of the three styles of random quote: ', ", and nothing.
	 */
	static private function getRandQuote() {
		switch ( wikiFuzz::randnum( 3 ) ) {
			case 1 : return "'";
			case 2 : return "\"";
			default: return "";
		}
	}

	/**
	 ** Returns fuzz text, with the parameter indicating approximately how many lines of text you want.
	 */
	static public function makeFuzz( $maxtypes = 2 ) {
		$page = "";
		for ( $k = 0; $k < $maxtypes; $k++ ) {
			$page .= wikiFuzz::loop();
		}
		return $page;
	}
}


// //////   MEDIAWIKI PAGES TO TEST, AND HOW TO TEST THEM  ///////

/**
 ** A page test has just these things:
 **        1) Form parameters.
 **        2) the URL we are going to test those parameters on.
 **        3) Any cookies required for the test.
 **        4) Whether Tidy should validate the page. Defaults to true, but can be turned off.
 **        Declared abstract because it should be extended by a class
 **        that supplies these parameters.
 */
abstract class pageTest {
	protected $params;
	protected $pagePath;
	protected $cookie = "";
	protected $tidyValidate = true;

	public function getParams() {
		return $this->params;
	}

	public function getPagePath() {
		return $this->pagePath;
	}

	public function getCookie() {
		return $this->cookie;
	}

	public function tidyValidate() {
		return $this->tidyValidate;
	}
}


/**
 ** a page test for the "Edit" page. Tests Parser.php and Sanitizer.php.
 */
class editPageTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=WIKIFUZZ";

		$this->params = array (
				"action"        => "submit",
				"wpMinoredit"   => wikiFuzz::makeFuzz( 2 ),
				"wpPreview"     => wikiFuzz::makeFuzz( 2 ),
				"wpSection"     => wikiFuzz::makeFuzz( 2 ),
				"wpEdittime"    => wikiFuzz::makeFuzz( 2 ),
				"wpSummary"     => wikiFuzz::makeFuzz( 2 ),
				"wpScrolltop"   => wikiFuzz::makeFuzz( 2 ),
				"wpStarttime"   => wikiFuzz::makeFuzz( 2 ),
				"wpAutoSummary" => wikiFuzz::makeFuzz( 2 ),
				"wpTextbox1"    => wikiFuzz::makeFuzz( 40 )  // the main wiki text, need lots of this.
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["wpSection"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["wpEdittime"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["wpSummary"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["wpScrolltop"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["wpStarttime"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["wpAutoSummary"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["wpTextbox1"] );
	}
}


/**
 ** a page test for "Special:Listusers".
 */
class listusersTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Listusers";

		$this->params = array (
				"title"        => wikiFuzz::makeFuzz( 2 ),
				"group"        => wikiFuzz::makeFuzz( 2 ),
				"username"     => wikiFuzz::makeFuzz( 2 ),
				"Go"           => wikiFuzz::makeFuzz( 2 ),
				"limit"        => wikiFuzz::chooseInput( array( "0", "-1", "---'----------0", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) ),
				"offset"       => wikiFuzz::chooseInput( array( "0", "-1", "--------'-----0", "+1", "81343242346234234", wikiFuzz::makeFuzz( 2 ) ) )
				);
	}
}


/**
 ** a page test for "Special:Search".
 */
class searchTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Search";

		$this->params = array (
				"action"        => "index.php?title=Special:Search",
				"ns0"           => wikiFuzz::makeFuzz( 2 ),
				"ns1"           => wikiFuzz::makeFuzz( 2 ),
				"ns2"           => wikiFuzz::makeFuzz( 2 ),
				"ns3"           => wikiFuzz::makeFuzz( 2 ),
				"ns4"           => wikiFuzz::makeFuzz( 2 ),
				"ns5"           => wikiFuzz::makeFuzz( 2 ),
				"ns6"           => wikiFuzz::makeFuzz( 2 ),
				"ns7"           => wikiFuzz::makeFuzz( 2 ),
				"ns8"           => wikiFuzz::makeFuzz( 2 ),
				"ns9"           => wikiFuzz::makeFuzz( 2 ),
				"ns10"          => wikiFuzz::makeFuzz( 2 ),
				"ns11"          => wikiFuzz::makeFuzz( 2 ),
				"ns12"          => wikiFuzz::makeFuzz( 2 ),
				"ns13"          => wikiFuzz::makeFuzz( 2 ),
				"ns14"          => wikiFuzz::makeFuzz( 2 ),
				"ns15"          => wikiFuzz::makeFuzz( 2 ),
				"redirs"        => wikiFuzz::makeFuzz( 2 ),
				"search"        => wikiFuzz::makeFuzz( 2 ),
				"offset"        => wikiFuzz::chooseInput( array( "", "0", "-1", "--------'-----0", "+1", "81343242346234234", wikiFuzz::makeFuzz( 2 ) ) ),
				"fulltext"      => wikiFuzz::chooseInput( array( "", "0", "1", "--------'-----0", "+1", wikiFuzz::makeFuzz( 2 ) ) ),
				"searchx"       => wikiFuzz::chooseInput( array( "", "0", "1", "--------'-----0", "+1", wikiFuzz::makeFuzz( 2 ) ) )
					);
	}
}


/**
 ** a page test for "Special:Recentchanges".
 */
class recentchangesTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Recentchanges";

		$this->params = array (
				"action"        => wikiFuzz::makeFuzz( 2 ),
				"title"         => wikiFuzz::makeFuzz( 2 ),
				"namespace"     => wikiFuzz::chooseInput( range( -1, 15 ) ),
				"Go"            => wikiFuzz::makeFuzz( 2 ),
				"invert"        => wikiFuzz::chooseInput( array( "-1", "---'----------0", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) ),
				"hideanons"     => wikiFuzz::chooseInput( array( "-1", "------'-------0", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) ),
				'limit'         => wikiFuzz::chooseInput( array( "0", "-1", "---------'----0", "+1", "81340909772349234",  wikiFuzz::makeFuzz( 2 ) ) ),
				"days"          => wikiFuzz::chooseInput( array( "-1", "----------'---0", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) ),
				"hideminor"     => wikiFuzz::chooseInput( array( "-1", "-----------'--0", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) ),
				"hidebots"      => wikiFuzz::chooseInput( array( "-1", "---------'----0", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) ),
				"hideliu"       => wikiFuzz::chooseInput( array( "-1", "-------'------0", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) ),
				"hidepatrolled" => wikiFuzz::chooseInput( array( "-1", "-----'--------0", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) ),
				"hidemyself"    => wikiFuzz::chooseInput( array( "-1", "--'-----------0", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) ),
				'categories_any' => wikiFuzz::chooseInput( array( "-1", "--'-----------0", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) ),
				'categories'    => wikiFuzz::chooseInput( array( "-1", "--'-----------0", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) ),
				'feed'          => wikiFuzz::chooseInput( array( "-1", "--'-----------0", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) )
				);
	}
}


/**
 ** a page test for "Special:Prefixindex".
 */
class prefixindexTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Prefixindex";

		$this->params = array (
				"title"         => "Special:Prefixindex",
				"namespace"     => wikiFuzz::randnum( 101, -10 ),
				"Go"            => wikiFuzz::makeFuzz( 2 )
				);

		// sometimes we want 'prefix', sometimes we want 'from', and sometimes we want nothing.
		if ( wikiFuzz::randnum( 3 ) == 0 ) {
			$this->params["prefix"] = wikiFuzz::chooseInput( array( "-1", "-----'--------0", "+++--+1",
												 wikiFuzz::randnum( 8134, -10 ), wikiFuzz::makeFuzz( 2 ) ) );
		}
		if ( wikiFuzz::randnum( 3 ) == 0 ) {
			$this->params["from"]   = wikiFuzz::chooseInput( array( "-1", "-----'--------0", "+++--+1",
												wikiFuzz::randnum( 8134, -10 ), wikiFuzz::makeFuzz( 2 ) ) );
		}
	}
}


/**
 ** a page test for "Special:MIMEsearch".
 */
class mimeSearchTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:MIMEsearch";

		$this->params = array (
				"action"        => "index.php?title=Special:MIMEsearch",
				"mime"          => wikiFuzz::makeFuzz( 3 ),
				'limit'         => wikiFuzz::chooseInput( array( "0", "-1", "-------'------0", "+1", "81342321351235325",  wikiFuzz::makeFuzz( 2 ) ) ),
				'offset'        => wikiFuzz::chooseInput( array( "0", "-1", "-----'--------0", "+1", "81341231235365252234324",  wikiFuzz::makeFuzz( 2 ) ) )
				);
	}
}


/**
 ** a page test for "Special:Log".
 */
class specialLogTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Log";

		$this->params = array (
				"type"        => wikiFuzz::chooseInput( array( "", wikiFuzz::makeFuzz( 2 ) ) ),
				"par"         => wikiFuzz::makeFuzz( 2 ),
				"user"        => wikiFuzz::makeFuzz( 2 ),
				"page"        => wikiFuzz::makeFuzz( 2 ),
				"from"        => wikiFuzz::makeFuzz( 2 ),
				"until"       => wikiFuzz::makeFuzz( 2 ),
				"title"       => wikiFuzz::makeFuzz( 2 )
				);
	}
}


/**
 ** a page test for "Special:Userlogin", with a successful login.
 */
class successfulUserLoginTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Userlogin&action=submitlogin&type=login&returnto=" . wikiFuzz::makeFuzz( 2 );

		$this->params = array (
				"wpName"          => USER_ON_WIKI,
				// sometimes real password, sometimes not:
				'wpPassword'      => wikiFuzz::chooseInput( array( wikiFuzz::makeFuzz( 2 ), USER_PASSWORD ) ),
				'wpRemember'      => wikiFuzz::makeFuzz( 2 )
				);

		$this->cookie = "wikidb_session=" .  wikiFuzz::chooseInput( array( "1" , wikiFuzz::makeFuzz( 2 ) ) );
	}
}


/**
 ** a page test for "Special:Userlogin".
 */
class userLoginTest extends pageTest {
	function __construct() {

		$this->pagePath = "index.php?title=Special:Userlogin";

		$this->params = array (
				'wpRetype'        => wikiFuzz::makeFuzz( 2 ),
				'wpRemember'      => wikiFuzz::makeFuzz( 2 ),
				'wpRealName'      => wikiFuzz::makeFuzz( 2 ),
				'wpPassword'      => wikiFuzz::makeFuzz( 2 ),
				'wpName'          => wikiFuzz::makeFuzz( 2 ),
				'wpMailmypassword' => wikiFuzz::makeFuzz( 2 ),
				'wpLoginattempt'  => wikiFuzz::makeFuzz( 2 ),
				'wpEmail'         => wikiFuzz::makeFuzz( 2 ),
				'wpDomain'        => wikiFuzz::chooseInput( array( "", "local", wikiFuzz::makeFuzz( 2 ) ) ),
				'wpCreateaccountMail' => wikiFuzz::chooseInput( array( "", wikiFuzz::makeFuzz( 2 ) ) ),
				'wpCreateaccount' => wikiFuzz::chooseInput( array( "", wikiFuzz::makeFuzz( 2 ) ) ),
				'wpCookieCheck'   => wikiFuzz::chooseInput( array( "", wikiFuzz::makeFuzz( 2 ) ) ),
				'type'            => wikiFuzz::chooseInput( array( "signup", "login", "", wikiFuzz::makeFuzz( 2 ) ) ),
				'returnto'        => wikiFuzz::makeFuzz( 2 ),
				'action'          => wikiFuzz::chooseInput( array( "", "submitlogin", wikiFuzz::makeFuzz( 2 ) ) )
				);

		$this->cookie = "wikidb_session=" . wikiFuzz::chooseInput( array( "1" , wikiFuzz::makeFuzz( 2 ) ) );
	}
}


/**
 ** a page test for "Special:Ipblocklist" (also includes unblocking)
 */
class ipblocklistTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Ipblocklist";

		$this->params = array (
				'wpUnblockAddress' => wikiFuzz::makeFuzz( 2 ),
				'ip'              => wikiFuzz::chooseInput( array( "20398702394", "", "Nickj2", wikiFuzz::makeFuzz( 2 ),
									 // something like an IP address, sometimes invalid:
									 ( wikiFuzz::randnum( 300, -20 ) . "." . wikiFuzz::randnum( 300, -20 ) . "."
									   . wikiFuzz::randnum( 300, -20 ) . "." . wikiFuzz::randnum( 300, -20 ) ) ) ),
				'id'              => wikiFuzz::makeFuzz( 2 ),
				'wpUnblockReason' => wikiFuzz::makeFuzz( 2 ),
				'action'          => wikiFuzz::chooseInput( array( wikiFuzz::makeFuzz( 2 ), "success", "submit", "unblock" ) ),
				'wpEditToken'     => wikiFuzz::makeFuzz( 2 ),
				'wpBlock'         => wikiFuzz::chooseInput( array( wikiFuzz::makeFuzz( 2 ), "" ) ),
				'limit'           => wikiFuzz::chooseInput( array( "0", "-1", "--------'-----0", "+1",
												 "09700982312351132098234",  wikiFuzz::makeFuzz( 2 ) ) ),
				'offset'          => wikiFuzz::chooseInput( array( "0", "-1", "------'-------0", "+1",
												 "09700980982341535324234234", wikiFuzz::makeFuzz( 2 ) ) )
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["action"] );
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["ip"] );
		if ( wikiFuzz::randnum( 2 ) == 0 ) unset( $this->params["id"] );
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["wpUnblockAddress"] );
	}
}


/**
 ** a page test for "Special:Newimages".
 */
class newImagesTest extends  pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Newimages";

		$this->params = array (
				'hidebots'  => wikiFuzz::chooseInput( array( wikiFuzz::makeFuzz( 2 ), "1", "", "-1" ) ),
				'wpIlMatch' => wikiFuzz::makeFuzz( 2 ),
				'until'     => wikiFuzz::makeFuzz( 2 ),
				'from'      => wikiFuzz::makeFuzz( 2 )
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["until"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["from"] );
	}
}


/**
 ** a page test for the "Special:Imagelist" page.
 */
class imagelistTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Imagelist";

		$this->params = array (
				'sort'      => wikiFuzz::chooseInput( array( "bysize", "byname" , "bydate", wikiFuzz::makeFuzz( 2 ) ) ),
				'limit'     => wikiFuzz::chooseInput( array( "0", "-1", "--------'-----0", "+1", "09700982312351132098234",  wikiFuzz::makeFuzz( 2 ) ) ),
				'offset'    => wikiFuzz::chooseInput( array( "0", "-1", "------'-------0", "+1", "09700980982341535324234234", wikiFuzz::makeFuzz( 2 ) ) ),
				'wpIlMatch' => wikiFuzz::makeFuzz( 2 )
				);
	}
}


/**
 ** a page test for "Special:Export".
 */
class specialExportTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Export";

		$this->params = array (
				'action'      => wikiFuzz::chooseInput( array( "submit", "", wikiFuzz::makeFuzz( 2 ) ) ),
				'pages'       => wikiFuzz::makeFuzz( 2 ),
				'curonly'     => wikiFuzz::chooseInput( array( "", "0", "-1", wikiFuzz::makeFuzz( 2 ) ) ),
				'listauthors' => wikiFuzz::chooseInput( array( "", "0", "-1", wikiFuzz::makeFuzz( 2 ) ) ),
				'history'     => wikiFuzz::chooseInput( array( "0", "-1", "------'-------0", "+1", "09700980982341535324234234", wikiFuzz::makeFuzz( 2 ) ) ),

				);

		// For the time being, need to disable "submit" action as Tidy barfs on MediaWiki's XML export.
		if ( $this->params['action'] == 'submit' ) $this->params['action'] = '';

		// Sometimes remove the history field.
		if ( wikiFuzz::randnum( 2 ) == 0 ) unset( $this->params["history"] );

		// page does not produce HTML.
		$this->tidyValidate = false;
	}
}


/**
 ** a page test for "Special:Booksources".
 */
class specialBooksourcesTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Booksources";

		$this->params = array (
				'go'    => wikiFuzz::makeFuzz( 2 ),
				// ISBN codes have to contain some semi-numeric stuff or will be ignored:
				'isbn'  => "0X0" . wikiFuzz::makeFuzz( 2 )
				);
	}
}


/**
 ** a page test for "Special:Allpages".
 */
class specialAllpagesTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special%3AAllpages";

		$this->params = array (
				'from'      => wikiFuzz::makeFuzz( 2 ),
				'namespace' => wikiFuzz::chooseInput( range( -1, 15 ) ),
				'go'        => wikiFuzz::makeFuzz( 2 )
				);
	}
}


/**
 ** a page test for the page History.
 */
class pageHistoryTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Main_Page&action=history";

		$this->params = array (
				'limit'     => wikiFuzz::chooseInput( array( "-1", "0", "-------'------0", "+1", "8134",  wikiFuzz::makeFuzz( 2 ) ) ),
				'offset'    => wikiFuzz::chooseInput( array( "-1", "0", "------'-------0", "+1", "9823412312312412435", wikiFuzz::makeFuzz( 2 ) ) ),
				"go"        => wikiFuzz::chooseInput( array( "first", "last", wikiFuzz::makeFuzz( 2 ) ) ),
				"dir"       => wikiFuzz::chooseInput( array( "prev", "next", wikiFuzz::makeFuzz( 2 ) ) ),
				"diff"      => wikiFuzz::chooseInput( array( "-1", "--------'-----0", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) ),
				"oldid"     => wikiFuzz::chooseInput( array( "prev", "-1", "+1", "8134", wikiFuzz::makeFuzz( 2 ) ) ),
				"feed"      => wikiFuzz::makeFuzz( 2 )
				);
	}
}


/**
 ** a page test for the Special:Contributions".
 */
class contributionsTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Contributions/" . USER_ON_WIKI;

		$this->params = array (
				'target'    => wikiFuzz::chooseInput( array( wikiFuzz::makeFuzz( 2 ), "newbies", USER_ON_WIKI ) ),
				'namespace' => wikiFuzz::chooseInput( array( -1, 15, 1, wikiFuzz::makeFuzz( 2 ) ) ),
				'offset'    => wikiFuzz::chooseInput( array( "0", "-1", "------'-------0", "+1", "982342131232131231241", wikiFuzz::makeFuzz( 2 ) ) ),
				'bot'       => wikiFuzz::chooseInput( array( "", "-1", "0", "1", wikiFuzz::makeFuzz( 2 ) ) ),
				'go'        => wikiFuzz::chooseInput( array( "-1", 'prev', 'next', wikiFuzz::makeFuzz( 2 ) ) )
				);
	}
}


/**
 ** a page test for viewing a normal page, whilst posting various params.
 */
class viewPageTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Main_Page";

		$this->params = array (
				"useskin"        => wikiFuzz::chooseInput( array( "chick", "cologneblue", "myskin",
										"nostalgia", "simple", "standard", wikiFuzz::makeFuzz( 2 ) ) ),
				"uselang"        => wikiFuzz::chooseInput( array( wikiFuzz::makeFuzz( 2 ),
						"ab", "af", "an", "ar", "arc", "as", "ast", "av", "ay", "az", "ba",
						"bat-smg", "be", "bg", "bm", "bn", "bo", "bpy", "br", "bs", "ca",
						"ce", "cs", "csb", "cv", "cy", "da", "de", "dv", "dz", "el", "en",
						"eo", "es", "et", "eu", "fa", "fi", "fo", "fr", "fur", "fy", "ga",
						"gn", "gsw", "gu", "he", "hi", "hr", "hu", "ia", "id", "ii", "is",
						"it", "ja", "jv", "ka", "km", "kn", "ko", "ks", "ku", "kv", "la",
						"li", "lo", "lt", "lv", "mk", "ml", "ms", "nah", "nap", "nds",
						"nds-nl", "nl", "nn", "no", "non", "nv", "oc", "or", "os", "pa",
						"pl", "pms", "ps", "pt", "pt-br", "qu", "rmy", "ro", "ru", "sc",
						"sd", "sk", "sl", "sq", "sr", "sr-ec", "sr-el",
						"su", "sv", "ta", "te", "th", "tr", "tt", "ty", "tyv", "udm",
						"ug", "uk", "ur", "utf8", "vec", "vi", "wa", "xal", "yi", "za",
						"zh", "zh-cn", "zh-hk", "zh-sg", "zh-tw", "zh-tw" ) ),
				"returnto"       => wikiFuzz::makeFuzz( 2 ),
				"feed"           => wikiFuzz::chooseInput( array( "atom", "rss", wikiFuzz::makeFuzz( 2 ) ) ),
				"rcid"           => wikiFuzz::makeFuzz( 2 ),
				"action"         => wikiFuzz::chooseInput( array( "view", "raw", "render", wikiFuzz::makeFuzz( 2 ), "markpatrolled" ) ),
				"printable"      => wikiFuzz::makeFuzz( 2 ),
				"oldid"          => wikiFuzz::makeFuzz( 2 ),
				"redirect"       => wikiFuzz::makeFuzz( 2 ),
				"diff"           => wikiFuzz::makeFuzz( 2 ),
				"search"         => wikiFuzz::makeFuzz( 2 ),
				"rdfrom"         => wikiFuzz::makeFuzz( 2 ),  // things from Article.php from here on:
				"token"          => wikiFuzz::makeFuzz( 2 ),
				"tbid"           => wikiFuzz::makeFuzz( 2 ),
				"action"         => wikiFuzz::chooseInput( array( "purge", wikiFuzz::makeFuzz( 2 ) ) ),
				"wpReason"       => wikiFuzz::makeFuzz( 2 ),
				"wpEditToken"    => wikiFuzz::makeFuzz( 2 ),
				"from"           => wikiFuzz::makeFuzz( 2 ),
				"bot"            => wikiFuzz::makeFuzz( 2 ),
				"summary"        => wikiFuzz::makeFuzz( 2 ),
				"direction"      => wikiFuzz::chooseInput( array( "next", "prev", wikiFuzz::makeFuzz( 2 ) ) ),
				"section"        => wikiFuzz::makeFuzz( 2 ),
				"preload"        => wikiFuzz::makeFuzz( 2 ),

				);

		// Tidy does not know how to valid atom or rss, so exclude from testing for the time being.
		if ( $this->params["feed"] == "atom" )     { unset( $this->params["feed"] ); }
		elseif ( $this->params["feed"] == "rss" ) { unset( $this->params["feed"] ); }

		// Raw pages cannot really be validated
		if ( $this->params["action"] == "raw" ) unset( $this->params["action"] );

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["rcid"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["diff"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["rdfrom"] );
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["oldid"] );

		// usually don't want action == purge.
		if ( wikiFuzz::randnum( 6 ) > 1 ) unset( $this->params["action"] );
	}
}


/**
 ** a page test for "Special:Allmessages".
 */
class specialAllmessagesTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Allmessages";

		// only really has one parameter
		$this->params = array (
				"ot"     => wikiFuzz::chooseInput( array( "php", "html", wikiFuzz::makeFuzz( 2 ) ) )
				);
	}
}

/**
 ** a page test for "Special:Newpages".
 */
class specialNewpagesPageTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Newpages";

		$this->params = array (
				"namespace" => wikiFuzz::chooseInput( range( -1, 15 ) ),
				"feed"      => wikiFuzz::chooseInput( array( "atom", "rss", wikiFuzz::makeFuzz( 2 ) ) ),
				'limit'     => wikiFuzz::chooseInput( array( "-1", "0", "-------'------0", "+1", "8134",  wikiFuzz::makeFuzz( 2 ) ) ),
				'offset'    => wikiFuzz::chooseInput( array( "-1", "0", "------'-------0", "+1", "9823412312312412435", wikiFuzz::makeFuzz( 2 ) ) )
				);

		// Tidy does not know how to valid atom or rss, so exclude from testing for the time being.
		if ( $this->params["feed"] == "atom" )     { unset( $this->params["feed"] ); }
		elseif ( $this->params["feed"] == "rss" ) { unset( $this->params["feed"] ); }
	}
}

/**
 ** a page test for "redirect.php"
 */
class redirectTest extends pageTest {
	function __construct() {
		$this->pagePath = "redirect.php";

		$this->params = array (
				"wpDropdown" => wikiFuzz::makeFuzz( 2 )
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["wpDropdown"] );
	}
}


/**
 ** a page test for "Special:Confirmemail"
 */
class confirmEmail extends pageTest {
	function __construct() {
		// sometimes we send a bogus confirmation code, and sometimes we don't.
		$this->pagePath = "index.php?title=Special:Confirmemail" . wikiFuzz::chooseInput( array( "", "/" . wikiFuzz::makeTitleSafe( wikiFuzz::makeFuzz( 1 ) ) ) );

		$this->params = array (
				"token" => wikiFuzz::makeFuzz( 2 )
				);
	}
}


/**
 ** a page test for "Special:Watchlist"
 **        Note: this test would be better if we were logged in.
 */
class watchlistTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Watchlist";

		$this->params = array (
				"remove"   => wikiFuzz::chooseInput( array( "Remove checked items from watchlist", wikiFuzz::makeFuzz( 2 ) ) ),
				'days'     => wikiFuzz::chooseInput( array( 0, -1, -230, "--", 3, 9, wikiFuzz::makeFuzz( 2 ) ) ),
				'hideOwn'  => wikiFuzz::chooseInput( array( "", "0", "1", wikiFuzz::makeFuzz( 2 ) ) ),
				'hideBots' => wikiFuzz::chooseInput( array( "", "0", "1", wikiFuzz::makeFuzz( 2 ) ) ),
				'namespace' => wikiFuzz::chooseInput( array( "", "0", "1", wikiFuzz::makeFuzz( 2 ) ) ),
				'action'   => wikiFuzz::chooseInput( array( "submit", "clear", wikiFuzz::makeFuzz( 2 ) ) ),
				'id[]'     => wikiFuzz::makeFuzz( 2 ),
				'edit'     => wikiFuzz::makeFuzz( 2 ),
				'token'    => wikiFuzz::chooseInput( array( "", "1243213", wikiFuzz::makeFuzz( 2 ) ) )
				);

		// sometimes we specifiy "reset", and sometimes we don't.
		if ( wikiFuzz::randnum( 3 ) == 0 ) $this->params["reset"] = wikiFuzz::chooseInput( array( "", "0", "1", wikiFuzz::makeFuzz( 2 ) ) );
	}
}


/**
 ** a page test for "Special:Blockme"
 */
class specialBlockmeTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Blockme";

		$this->params = array ( );

		// sometimes we specify "ip", and sometimes we don't.
		if ( wikiFuzz::randnum( 1 ) == 0 ) {
			$this->params["ip"] = wikiFuzz::chooseInput( array( "10.12.41.213", wikiFuzz::randnum( 8134, -10 ), wikiFuzz::makeFuzz( 2 ) ) );
		}
	}
}


/**
 ** a page test for "Special:Movepage"
 */
class specialMovePage extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Movepage";

		$this->params = array (
				"action"      => wikiFuzz::chooseInput( array( "success", "submit", "", wikiFuzz::makeFuzz( 2 ) ) ),
				'wpEditToken' => wikiFuzz::chooseInput( array( '', 0, 34987987, wikiFuzz::makeFuzz( 2 ) ) ),
				'target'      => wikiFuzz::chooseInput( array( "x", wikiFuzz::makeTitleSafe( wikiFuzz::makeFuzz( 2 ) ) ) ),
				'wpOldTitle'  => wikiFuzz::chooseInput( array( "z", wikiFuzz::makeTitleSafe( wikiFuzz::makeFuzz( 2 ) ), wikiFuzz::makeFuzz( 2 ) ) ),
				'wpNewTitle'  => wikiFuzz::chooseInput( array( "y", wikiFuzz::makeTitleSafe( wikiFuzz::makeFuzz( 2 ) ), wikiFuzz::makeFuzz( 2 ) ) ),
				'wpReason'    => wikiFuzz::chooseInput( array( wikiFuzz::makeFuzz( 2 ) ) ),
				'wpMovetalk'  => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				'wpDeleteAndMove'  => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				'wpConfirm'   => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				'talkmoved'   => wikiFuzz::chooseInput( array( "1", wikiFuzz::makeFuzz( 2 ), "articleexists", 'notalkpage' ) ),
				'oldtitle'    => wikiFuzz::makeFuzz( 2 ),
				'newtitle'    => wikiFuzz::makeFuzz( 2 ),
				'wpMovetalk'  => wikiFuzz::chooseInput( array( "1", "0", wikiFuzz::makeFuzz( 2 ) ) )
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 2 ) == 0 ) unset( $this->params["wpEditToken"] );
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["target"] );
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["wpNewTitle"] );
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["wpReason"] );
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["wpOldTitle"] );
	}
}


/**
 ** a page test for "Special:Undelete"
 */
class specialUndeletePageTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Undelete";

		$this->params = array (
				"action"      => wikiFuzz::chooseInput( array( "submit", "", wikiFuzz::makeFuzz( 2 ) ) ),
				'wpEditToken' => wikiFuzz::chooseInput( array( '', 0, 34987987, wikiFuzz::makeFuzz( 2 ) ) ),
				'target'      => wikiFuzz::chooseInput( array( "x", wikiFuzz::makeTitleSafe( wikiFuzz::makeFuzz( 2 ) ) ) ),
				'timestamp'   => wikiFuzz::chooseInput( array( "125223", wikiFuzz::makeFuzz( 2 ) ) ),
				'file'        => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				'restore'     => wikiFuzz::chooseInput( array( "0", "1", wikiFuzz::makeFuzz( 2 ) ) ),
				'preview'     => wikiFuzz::chooseInput( array( "0", "1", wikiFuzz::makeFuzz( 2 ) ) ),
				'wpComment'   => wikiFuzz::makeFuzz( 2 )
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 2 ) == 0 ) unset( $this->params["wpEditToken"] );
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["target"] );
		if ( wikiFuzz::randnum( 1 ) == 0 ) unset( $this->params["restore"] );
		if ( wikiFuzz::randnum( 1 ) == 0 ) unset( $this->params["preview"] );
	}
}


/**
 ** a page test for "Special:Unlockdb"
 */
class specialUnlockdbPageTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Unlockdb";

		$this->params = array (
				"action"        => wikiFuzz::chooseInput( array( "submit", "success", "", wikiFuzz::makeFuzz( 2 ) ) ),
				'wpEditToken'   => wikiFuzz::chooseInput( array( "20398702394", "", wikiFuzz::makeFuzz( 2 ) ) ),
				'wpLockConfirm' => wikiFuzz::chooseInput( array( "0", "1", wikiFuzz::makeFuzz( 2 ) ) )
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["wpEditToken"] );
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["action"] );
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["wpLockConfirm"] );
	}
}


/**
 ** a page test for "Special:Lockdb"
 */
class specialLockdbPageTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Lockdb";

		$this->params = array (
				"action"       => wikiFuzz::chooseInput( array( "submit", "success", "", wikiFuzz::makeFuzz( 2 ) ) ),
				'wpEditToken'  => wikiFuzz::chooseInput( array( "20398702394", "", wikiFuzz::makeFuzz( 2 ) ) ),
				'wpLockReason' => wikiFuzz::makeFuzz( 2 ),
				'wpLockConfirm' => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) )
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["wpEditToken"] );
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["action"] );
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["wpLockConfirm"] );
	}
}


/**
 ** a page test for "Special:Userrights"
 */
class specialUserrights extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Userrights";

		$this->params = array (
				'wpEditToken'   => wikiFuzz::chooseInput( array( "20398702394", "", wikiFuzz::makeFuzz( 2 ) ) ),
				'user-editname' => wikiFuzz::chooseInput( array( "Nickj2", "Nickj2\n<xyz>", wikiFuzz::makeFuzz( 2 ) ) ),
				'ssearchuser'   => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				'saveusergroups' => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ), "Save User Groups" ),
				'member[]'      => wikiFuzz::chooseInput( array( "0", "bot", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"available[]"   => wikiFuzz::chooseInput( array( "0", "sysop", "bureaucrat", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) )
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params['ssearchuser'] );
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params['saveusergroups'] );
	}
}


/**
 ** a test for page protection and unprotection.
 */
class pageProtectionForm extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Main_Page";

		$this->params = array (
				"action"               => "protect",
				'wpEditToken'          => wikiFuzz::chooseInput( array( "20398702394", "", wikiFuzz::makeFuzz( 2 ) ) ),
				"mwProtect-level-edit" => wikiFuzz::chooseInput( array( '', 'autoconfirmed', 'sysop', wikiFuzz::makeFuzz( 2 ) ) ),
				"mwProtect-level-move" => wikiFuzz::chooseInput( array( '', 'autoconfirmed', 'sysop', wikiFuzz::makeFuzz( 2 ) ) ),
				"mwProtectUnchained"   => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				'mwProtect-reason'     => wikiFuzz::chooseInput( array( "because it was there", wikiFuzz::makeFuzz( 2 ) ) )
				);


		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["mwProtectUnchained"] );
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params['mwProtect-reason'] );
	}
}


/**
 ** a page test for "Special:Blockip".
 */
class specialBlockip extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Blockip";

		$this->params = array (
				"action"          => wikiFuzz::chooseInput( array( "submit", "",  wikiFuzz::makeFuzz( 2 ) ) ),
				'wpEditToken'     => wikiFuzz::chooseInput( array( "20398702394", "", wikiFuzz::makeFuzz( 2 ) ) ),
				"wpBlockAddress"  => wikiFuzz::chooseInput( array( "20398702394", "", "Nickj2", wikiFuzz::makeFuzz( 2 ),
									  // something like an IP address, sometimes invalid:
									 ( wikiFuzz::randnum( 300, -20 ) . "." . wikiFuzz::randnum( 300, -20 ) . "."
									  . wikiFuzz::randnum( 300, -20 ) . "." . wikiFuzz::randnum( 300, -20 ) ) ) ),
				"ip"              => wikiFuzz::chooseInput( array( "20398702394", "", "Nickj2", wikiFuzz::makeFuzz( 2 ),
									  // something like an IP address, sometimes invalid:
									 ( wikiFuzz::randnum( 300, -20 ) . "." . wikiFuzz::randnum( 300, -20 ) . "."
									  . wikiFuzz::randnum( 300, -20 ) . "." . wikiFuzz::randnum( 300, -20 ) ) ) ),
				"wpBlockOther"    => wikiFuzz::chooseInput( array( '', 'Nickj2', wikiFuzz::makeFuzz( 2 ) ) ),
				"wpBlockExpiry"   => wikiFuzz::chooseInput( array( "other", "2 hours", "1 day", "3 days", "1 week", "2 weeks",
										  "1 month", "3 months", "6 months", "1 year", "infinite", wikiFuzz::makeFuzz( 2 ) ) ),
				"wpBlockReason"   => wikiFuzz::chooseInput( array( "because it was there", wikiFuzz::makeFuzz( 2 ) ) ),
				"wpAnonOnly"      => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"wpCreateAccount" => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"wpBlock"         => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) )
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["wpBlockOther"] );
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["wpBlockExpiry"] );
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["wpBlockReason"] );
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["wpAnonOnly"] );
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["wpCreateAccount"] );
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["wpBlockAddress"] );
		if ( wikiFuzz::randnum( 4 ) == 0 ) unset( $this->params["ip"] );
	}
}


/**
 ** a test for the imagepage.
 */
class imagepageTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Image:Small-email.png";

		$this->params = array (
				"image"         => wikiFuzz::chooseInput( array( "Small-email.png", wikiFuzz::makeFuzz( 2 ) ) ),
				"wpReason"      => wikiFuzz::makeFuzz( 2 ),
				"oldimage"      => wikiFuzz::chooseInput( array( "Small-email.png", wikiFuzz::makeFuzz( 2 ) ) ),
				"wpEditToken"   => wikiFuzz::chooseInput( array( "20398702394", "", wikiFuzz::makeFuzz( 2 ) ) ),
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["image"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["wpReason"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["oldimage"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["wpEditToken"] );
	}
}


/**
 ** a test for page deletion form.
 */
class pageDeletion extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Main_Page&action=delete";

		$this->params = array (
				"wpEditToken" => wikiFuzz::chooseInput( array( "20398702394", "", wikiFuzz::makeFuzz( 2 ) ) ),
				"wpReason"    => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"wpConfirm"   => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 5 ) == 0 ) unset( $this->params["wpReason"] );
		if ( wikiFuzz::randnum( 5 ) == 0 ) unset( $this->params["wpEditToken"] );
		if ( wikiFuzz::randnum( 5 ) == 0 ) unset( $this->params["wpConfirm"] );
	}
}



/**
 ** a test for Revision Deletion.
 */
class specialRevisionDeletePageTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Revisiondelete";

		$this->params = array (
				"target"               => wikiFuzz::chooseInput( array( "Main Page", wikiFuzz::makeFuzz( 2 ) ) ),
				"oldid"                => wikiFuzz::makeFuzz( 2 ),
				"oldid[]"              => wikiFuzz::makeFuzz( 2 ),
				"wpReason"             => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"revdelete-hide-text"  => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"revdelete-hide-comment" => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"revdelete-hide-user"  => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"revdelete-hide-restricted" => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["target"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["oldid"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["oldid[]"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["wpReason"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["revdelete-hide-text"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["revdelete-hide-comment"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["revdelete-hide-user"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["revdelete-hide-restricted"] );
	}
}


/**
 ** a test for Special:Import.
 */
class specialImportPageTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Import";

		$this->params = array (
				"action"         => "submit",
				"source"         => wikiFuzz::chooseInput( array( "upload", "interwiki", wikiFuzz::makeFuzz( 2 ) ) ),
				"MAX_FILE_SIZE"  => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"xmlimport"      => wikiFuzz::chooseInput( array( "/var/www/hosts/mediawiki/wiki/AdminSettings.php", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"namespace"      => wikiFuzz::chooseInput( array( wikiFuzz::randnum( 30, -6 ), wikiFuzz::makeFuzz( 2 ) ) ),
				"interwiki"      => wikiFuzz::makeFuzz( 2 ),
				"interwikiHistory" => wikiFuzz::makeFuzz( 2 ),
				"frompage"       => wikiFuzz::makeFuzz( 2 ),
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["action"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["source"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["MAX_FILE_SIZE"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["xmlimport"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["interwiki"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["interwikiHistory"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["frompage"] );

		// Note: Need to do a file upload to fully test this Special page.
	}
}


/**
 ** a test for thumb.php
 */
class thumbTest extends pageTest {
	function __construct() {
		$this->pagePath = "thumb.php";

		$this->params = array (
				"f"  => wikiFuzz::chooseInput( array( "..", "\\", "small-email.png", wikiFuzz::makeFuzz( 2 ) ) ),
				"w"  => wikiFuzz::chooseInput( array( "80", wikiFuzz::randnum( 6000, -200 ), wikiFuzz::makeFuzz( 2 ) ) ),
				"r"  => wikiFuzz::chooseInput( array( "0", wikiFuzz::makeFuzz( 2 ) ) ),
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["f"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["w"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["r"] );
	}
}


/**
 ** a test for trackback.php
 */
class trackbackTest extends pageTest {
	function __construct() {
		$this->pagePath = "trackback.php";

		$this->params = array (
				"url"       => wikiFuzz::makeFuzz( 2 ),
				"blog_name" => wikiFuzz::chooseInput( array( "80", wikiFuzz::randnum( 6000, -200 ), wikiFuzz::makeFuzz( 2 ) ) ),
				"article"   => wikiFuzz::chooseInput( array( "Main Page", wikiFuzz::makeFuzz( 2 ) ) ),
				"title"     => wikiFuzz::chooseInput( array( "Main Page", wikiFuzz::makeFuzz( 2 ) ) ),
				"excerpt"   => wikiFuzz::makeFuzz( 2 ),
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["title"] );
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["excerpt"] );

		// page does not produce HTML.
		$this->tidyValidate = false;
	}
}


/**
 ** a test for profileinfo.php
 */
class profileInfo extends pageTest {
	function __construct() {
		$this->pagePath = "profileinfo.php";

		$this->params = array (
				"expand"  => wikiFuzz::makeFuzz( 2 ),
				"sort"    => wikiFuzz::chooseInput( array( "time", "count", "name", wikiFuzz::makeFuzz( 2 ) ) ),
				"filter"  => wikiFuzz::chooseInput( array( "Main Page", wikiFuzz::makeFuzz( 2 ) ) ),
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["sort"] );
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["filter"] );
	}
}


/**
 ** a test for Special:Cite (extension Special page).
 */
class specialCitePageTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Cite";

		$this->params = array (
				"page"    => wikiFuzz::chooseInput( array( "\" onmouseover=\"alert(1);\"", "Main Page", wikiFuzz::makeFuzz( 2 ) ) ),
				"id"      => wikiFuzz::chooseInput( array( "-1", "0", "------'-------0", "+1", "-9823412312312412435", wikiFuzz::makeFuzz( 2 ) ) ),
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["page"] );
		if ( wikiFuzz::randnum( 6 ) == 0 ) unset( $this->params["id"] );
	}
}


/**
 ** a test for Special:Filepath (extension Special page).
 */
class specialFilepathPageTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Filepath";

		$this->params = array (
				"file"    => wikiFuzz::chooseInput( array( "Small-email.png", "Small-email.png" . wikiFuzz::makeFuzz( 1 ), wikiFuzz::makeFuzz( 2 ) ) ),
				);
	}
}


/**
 ** a test for Special:Makebot (extension Special page).
 */
class specialMakebot extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Makebot";

		$this->params = array (
				"username" => wikiFuzz::chooseInput( array( "Nickj2", "192.168.0.2", wikiFuzz::makeFuzz( 1 ) ) ),
				"dosearch" => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"grant"    => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"comment"  => wikiFuzz::chooseInput( array( "20398702394", "", wikiFuzz::makeFuzz( 2 ) ) ),
				"token"    => wikiFuzz::chooseInput( array( "20398702394", "", wikiFuzz::makeFuzz( 2 ) ) ),
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 2 ) == 0 ) unset( $this->params["dosearch"] );
		if ( wikiFuzz::randnum( 2 ) == 0 ) unset( $this->params["grant"] );
		if ( wikiFuzz::randnum( 5 ) == 0 ) unset( $this->params["token"] );
	}
}


/**
 ** a test for Special:Makesysop (extension Special page).
 */
class specialMakesysop extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Makesysop";

		$this->params = array (
				"wpMakesysopUser"   => wikiFuzz::chooseInput( array( "Nickj2", "192.168.0.2", wikiFuzz::makeFuzz( 1 ) ) ),
				"action"            => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"wpMakesysopSubmit" => wikiFuzz::chooseInput( array( "0", "1", "++--34234", wikiFuzz::makeFuzz( 2 ) ) ),
				"wpEditToken"       => wikiFuzz::chooseInput( array( "20398702394", "", wikiFuzz::makeFuzz( 2 ) ) ),
				"wpSetBureaucrat"   => wikiFuzz::chooseInput( array( "20398702394", "", wikiFuzz::makeFuzz( 2 ) ) ),
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["wpMakesysopSubmit"] );
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["wpEditToken"] );
		if ( wikiFuzz::randnum( 3 ) == 0 ) unset( $this->params["wpSetBureaucrat"] );
	}
}


/**
 ** a test for Special:Renameuser (extension Special page).
 */
class specialRenameuserPageTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Renameuser";

		$this->params = array (
				"oldusername"   => wikiFuzz::chooseInput( array( "Nickj2", "192.168.0.2", wikiFuzz::makeFuzz( 1 ) ) ),
				"newusername"   => wikiFuzz::chooseInput( array( "Nickj2", "192.168.0.2", wikiFuzz::makeFuzz( 1 ) ) ),
				"token"         => wikiFuzz::chooseInput( array( "20398702394", "", wikiFuzz::makeFuzz( 2 ) ) ),
				);
	}
}


/**
 ** a test for Special:Linksearch (extension Special page).
 */
class specialLinksearch extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special%3ALinksearch";

		$this->params = array (
				"target" => wikiFuzz::makeFuzz( 2 ),
				);

		// sometimes we don't want to specify certain parameters.
		if ( wikiFuzz::randnum( 10 ) == 0 ) unset( $this->params["target"] );
	}
}


/**
 ** a test for Special:CategoryTree (extension Special page).
 */
class specialCategoryTree extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:CategoryTree";

		$this->params = array (
				"target" => wikiFuzz::makeFuzz( 2 ),
				"from"   => wikiFuzz::makeFuzz( 2 ),
				"until"  => wikiFuzz::makeFuzz( 2 ),
				"showas" => wikiFuzz::makeFuzz( 2 ),
				"mode"   => wikiFuzz::chooseInput( array( "pages", "categories", "all", wikiFuzz::makeFuzz( 2 ) ) ),
				);

		// sometimes we do want to specify certain parameters.
		if ( wikiFuzz::randnum( 5 ) == 0 ) $this->params["notree"] = wikiFuzz::chooseInput( array( "1", 0, "", wikiFuzz::makeFuzz( 2 ) ) );
	}
}


/**
 ** a test for "Special:Chemicalsources" (extension Special page).
 */
class specialChemicalsourcesTest extends pageTest {
	function __construct() {
		$this->pagePath = "index.php?title=Special:Chemicalsources";

		// choose an input format to use.
		$format =  wikiFuzz::chooseInput(
					array(  'go',
							'CAS',
							'EINECS',
							'CHEBI',
							'PubChem',
							'SMILES',
							'InChI',
							'ATCCode',
							'KEGG',
							'RTECS',
							'ECNumber',
							'DrugBank',
							'Formula',
							'Name'
						 )
					);

		// values for different formats usually start with either letters or numbers.
		switch ( $format ) {
			case 'Name'   : $value = "A"; break;
			case 'InChI'  :
			case 'SMILES' :
			case 'Formula': $value = "C"; break;
			default       : $value = "0"; break;
		}

		// and then we append the fuzz input.
		$this->params = array ( $format => $value . wikiFuzz::makeFuzz( 2 ) );
	}
}


/**
 ** A test for api.php (programmatic interface to MediaWiki in XML/JSON/RSS/etc formats).
 ** Quite involved to test because there are lots of options/parameters, and because
 ** for a lot of the functionality if all the parameters don't make sense then it just
 ** returns the help screen - so currently a lot of the tests aren't actually doing much
 ** because something wasn't right in the query.
 **
 ** @todo: Incomplete / unfinished; Runs too fast (suggests not much testing going on).
 */
class api extends pageTest {

	// API login mode.
	private static function loginMode() {
		$arr =  array ( "lgname"        => wikiFuzz::makeFuzz( 2 ),
						"lgpassword"    => wikiFuzz::makeFuzz( 2 ),
					   );
		// sometimes we want to specify the extra "lgdomain" parameter.
		if ( wikiFuzz::randnum( 3 ) == 0 ) {
			$arr["lgdomain"] = wikiFuzz::chooseInput( array( "1", 0, "", wikiFuzz::makeFuzz( 2 ) ) );
		}

		return $arr;
	}

	// API OpenSearch mode.
	private static function opensearchMode() {
		return array ( "search"        => wikiFuzz::makeFuzz( 2 ) );
	}

	// API watchlist feed mode.
	private static function feedwatchlistMode() {
		// @todo FIXME: Add "wikiFuzz::makeFuzz(2)" as possible value below?
		return array ( "feedformat"    => wikiFuzz::chooseInput( array( "rss", "atom" ) ) );
	}

	// API query mode.
	private static function queryMode() {
		// @todo FIXME: Add "wikiFuzz::makeFuzz(2)" as possible params for the elements below?
		//        Suspect this will stuff up the tests more, but need to check.
		$params = array (
					 // @todo FIXME: More titles.
					 "titles"        => wikiFuzz::chooseInput( array( "Main Page" ) ),
					 // @todo FIXME: More pageids.
					 "pageids"       => 1,
					 "prop"          => wikiFuzz::chooseInput( array( "info", "revisions", "watchlist" ) ),
					 "list"          => wikiFuzz::chooseInput( array( "allpages", "logevents", "watchlist", "usercontribs", "recentchanges", "backlinks", "embeddedin", "imagelinks" ) ),
					 "meta"          => wikiFuzz::chooseInput( array( "siteinfo" ) ),
					 "generator"     => wikiFuzz::chooseInput( array( "allpages", "logevents", "watchlist", "info", "revisions" ) ),
					 "siprop"        => wikiFuzz::chooseInput( array( "general", "namespaces", "general|namespaces" ) ),
				   );

		 // Add extra parameters based on what list choice we got.
		 switch ( $params["list"] ) {
			case "usercontribs" : self::addListParams ( $params, "uc", array( "limit", "start", "end", "user", "dir" ) ); break;
			case "allpages"     : self::addListParams ( $params, "ap", array( "from", "prefix", "namespace", "filterredir", "limit" ) ); break;
			case "watchlist"    : self::addListParams ( $params, "wl", array( "allrev", "start", "end", "namespace", "dir", "limit", "prop" ) ); break;
			case "logevents"    : self::addListParams ( $params, "le", array( "limit", "type", "start", "end", "user", "dir" ) ); break;
			case "recentchanges": self::addListParams ( $params, "rc", array( "limit", "prop", "show", "namespace", "start", "end", "dir" ) ); break;
			case "backlinks"    : self::addListParams ( $params, "bl", array( "continue", "namespace", "redirect", "limit" ) ); break;
			case "embeddedin"   : self::addListParams ( $params, "ei", array( "continue", "namespace", "redirect", "limit" ) ); break;
			case "imagelinks"   : self::addListParams ( $params, "il", array( "continue", "namespace", "redirect", "limit" ) ); break;
		 }

		 if ( $params["prop"] == "revisions" ) {
			self::addListParams ( $params, "rv", array( "prop", "limit", "startid", "endid", "end", "dir" ) );
		 }

		 // Sometimes we want redirects, sometimes we don't.
		 if ( wikiFuzz::randnum( 3 ) == 0 ) {
			$params["redirects"] = wikiFuzz::chooseInput( array( "1", 0, "", wikiFuzz::makeFuzz( 2 ) ) );
		 }

		 return $params;
	}

	// Adds all the elements to the array, using the specified prefix.
	private static function addListParams( &$array, $prefix, $elements )  {
		foreach ( $elements as $element ) {
			$array[$prefix . $element] = self::getParamDetails( $element );
		}
	}

	// For a given element name, returns the data for that element.
	private static function getParamDetails( $element ) {
		switch ( $element ) {
			case 'startid'    :
			case 'endid'      :
			case 'start'      :
			case 'end'        :
			case 'limit'      : return wikiFuzz::chooseInput( array( "0", "-1", "---'----------0", "+1", "8134", "320742734234235", "20060230121212", wikiFuzz::randnum( 9000, -100 ), wikiFuzz::makeFuzz( 2 ) ) );
			case 'dir'        : return wikiFuzz::chooseInput( array( "newer", "older", wikiFuzz::makeFuzz( 2 ) ) );
			case 'user'       : return wikiFuzz::chooseInput( array( USER_ON_WIKI, wikiFuzz::makeFuzz( 2 ) ) );
			case 'namespace'  : return wikiFuzz::chooseInput( array( -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 200000, wikiFuzz::makeFuzz( 2 ) ) );
			case 'filterredir': return wikiFuzz::chooseInput( array( "all", "redirects", "nonredirectsallpages", wikiFuzz::makeFuzz( 2 ) ) );
			case 'allrev'     : return wikiFuzz::chooseInput( array( "1", 0, "", wikiFuzz::makeFuzz( 2 ) ) );
			case 'prop'       : return wikiFuzz::chooseInput( array( "user", "comment", "timestamp", "patrol", "flags", "user|user|comment|flags", wikiFuzz::makeFuzz( 2 ) ) );
			case 'type'       : return wikiFuzz::chooseInput( array( "block", "protect", "rights", "delete", "upload", "move", "import", "renameuser", "newusers", "makebot", wikiFuzz::makeFuzz( 2 ) ) );
			case 'hide'       : return wikiFuzz::chooseInput( array( "minor", "bots", "anons", "liu", "liu|bots|", wikiFuzz::makeFuzz( 2 ) ) );
			case 'show'       : return wikiFuzz::chooseInput( array( 'minor', '!minor', 'bot', '!bot', 'anon', '!anon', wikiFuzz::makeFuzz( 2 ) ) );
			default           : return wikiFuzz::makeFuzz( 2 );
		}
	}

	// Entry point.
	function __construct() {
		$this->pagePath = "api.php";

		$modes = array ( "help",
						"login",
						"opensearch",
						"feedwatchlist",
						"query" );
		$action = wikiFuzz::chooseInput( array_merge ( $modes, array( wikiFuzz::makeFuzz( 2 ) ) ) );

		switch ( $action ) {
			case "login"         : $this->params = self::loginMode();
								   break;
			case "opensearch"    : $this->params = self::opensearchMode();
								   break;
			case "feedwatchlist" : $this->params = self::feedwatchlistMode();
								   break;
			case "query"         : $this->params = self::queryMode();
								   break;
			case "help"         :
			default             :  // Do something random - "Crazy Ivan" mode.
								   $random_mode = wikiFuzz::chooseInput( $modes ) . "Mode";
								   // There is no "helpMode".
								   if ( $random_mode == "helpMode" ) $random_mode = "queryMode";
								   $this->params = self::$random_mode();
								   break;
		}

		// Save the selected action.
		$this->params["action"] = $action;

		// Set the cookie:
		// @todo FIXME: Need to get this cookie dynamically set, rather than hard-coded.
		$this->cookie = "wikidbUserID=10001; wikidbUserName=Test; wikidb_session=178df0fe68c75834643af65dec9ec98a; wikidbToken=1adc6753d62c44aec950c024d7ae0540";

		// Output format
		$this->params["format"] = wikiFuzz::chooseInput( array( "json", "jsonfm", "php", "phpfm",
															   "wddx", "wddxfm", "xml", "xmlfm",
															   "yaml", "yamlfm", "raw", "rawfm",
															   wikiFuzz::makeFuzz( 2 ) ) );

		// Page does not produce HTML (sometimes).
		$this->tidyValidate = false;
	}
}


/**
 ** a page test for the GeSHi extension.
 */
class GeSHi_Test extends pageTest {

	private function getGeSHiContent() {
		return "<source lang=\"" . $this->getLang() . "\" "
			   . ( wikiFuzz::randnum( 2 ) == 0 ? "line " : "" )
			   . ( wikiFuzz::randnum( 2 ) == 0 ? "strict " : "" )
			   . "start=" . wikiFuzz::chooseInput( array( wikiFuzz::randnum( 6000, -6000 ), wikiFuzz::makeFuzz( 2 ) ) )
			   . ">"
			   . wikiFuzz::makeFuzz( 2 )
			   . "</source>";
	}

	private function getLang() {
	return wikiFuzz::chooseInput( array( "actionscript", "ada", "apache", "applescript", "asm", "asp", "autoit", "bash", "blitzbasic", "bnf", "c", "c_mac", "caddcl", "cadlisp",
				"cfdg", "cfm", "cpp", "cpp-qt", "csharp", "css", "d", "delphi", "diff", "div", "dos", "eiffel", "fortran", "freebasic", "gml", "groovy", "html4strict", "idl",
				"ini", "inno", "io", "java", "java5", "javascript", "latex", "lisp", "lua", "matlab", "mirc", "mpasm", "mysql", "nsis", "objc", "ocaml", "ocaml-brief", "oobas",
				"oracle8", "pascal", "perl", "php", "php-brief", "plsql", "python", "qbasic", "rails", "reg", "robots", "ruby", "sas", "scheme", "sdlbasic", "smalltalk", "smarty",
				"sql", "tcl", "text", "thinbasic", "tsql", "vb", "vbnet", "vhdl", "visualfoxpro", "winbatch", "xml", "xpp", "z80", wikiFuzz::makeFuzz( 1 ) ) );
	}

	function __construct() {
		$this->pagePath = "index.php?title=WIKIFUZZ";

		$this->params = array (
				"action"        => "submit",
				"wpMinoredit"   => "test",
				"wpPreview"     => "test",
				"wpSection"     => "test",
				"wpEdittime"    => "test",
				"wpSummary"     => "test",
				"wpScrolltop"   => "test",
				"wpStarttime"   => "test",
				"wpAutoSummary" => "test",
				"wpTextbox1"    => $this->getGeSHiContent() // the main wiki text, contains fake GeSHi content.
				);
	}
}


/**
 ** selects a page test to run.
 */
function selectPageTest( $count ) {

	// if the user only wants a specific test, then only ever give them that.
	if ( defined( "SPECIFIC_TEST" ) ) {
		$testType = SPECIFIC_TEST;
		return new $testType ();
	}

	// Some of the time we test Special pages, the remaining
	// time we test using the standard edit page.
	switch ( $count % 100 ) {
		case 0 : return new successfulUserLoginTest();
		case 1 : return new listusersTest();
		case 2 : return new searchTest();
		case 3 : return new recentchangesTest();
		case 4 : return new prefixindexTest();
		case 5 : return new mimeSearchTest();
		case 6 : return new specialLogTest();
		case 7 : return new userLoginTest();
		case 8 : return new ipblocklistTest();
		case 9 : return new newImagesTest();
		case 10: return new imagelistTest();
		case 11: return new specialExportTest();
		case 12: return new specialBooksourcesTest();
		case 13: return new specialAllpagesTest();
		case 14: return new pageHistoryTest();
		case 15: return new contributionsTest();
		case 16: return new viewPageTest();
		case 17: return new specialAllmessagesTest();
		case 18: return new specialNewpagesPageTest();
		case 19: return new searchTest();
		case 20: return new redirectTest();
		case 21: return new confirmEmail();
		case 22: return new watchlistTest();
		case 23: return new specialBlockmeTest();
		case 24: return new specialUndeletePageTest();
		case 25: return new specialMovePage();
		case 26: return new specialUnlockdbPageTest();
		case 27: return new specialLockdbPageTest();
		case 28: return new specialUserrights();
		case 29: return new pageProtectionForm();
		case 30: return new specialBlockip();
		case 31: return new imagepageTest();
		case 32: return new pageDeletion();
		case 33: return new specialRevisionDeletePageTest();
		case 34: return new specialImportPageTest();
		case 35: return new thumbTest();
		case 36: return new trackbackTest();
		case 37: return new profileInfo();
		case 38: return new specialCitePageTest();
		case 39: return new specialFilepathPageTest();
		case 40: return new specialMakebot();
		case 41: return new specialMakesysop();
		case 42: return new specialRenameuserPageTest();
		case 43: return new specialLinksearch();
		case 44: return new specialCategoryTree();
		case 45: return new api();
		case 45: return new specialChemicalsourcesTest();
		default: return new editPageTest();
	}
}


// /////////////////////  SAVING OUTPUT  /////////////////////////

/**
 ** Utility function for saving a file. Currently has no error checking.
 */
function saveFile( $data, $name ) {
	file_put_contents( $name, $data );
}


/**
 ** Returns a test as an experimental GET-to-POST URL.
 **        This doesn't seem to always work though, and sometimes the output is too long
 **        to be a valid GET URL, so we also save in other formats.
 */
function getAsURL( pageTest $test ) {
	$used_question_mark = ( strpos( $test->getPagePath(), "?" ) !== false );
	$retval = "http://get-to-post.nickj.org/?" . WIKI_BASE_URL . $test->getPagePath();
	foreach ( $test->getParams() as $param => $value ) {
		if ( !$used_question_mark ) {
			$retval .= "?";
			$used_question_mark = true;
		}
		else {
			$retval .= "&";
		}
		$retval .= $param . "=" . urlencode( $value );
	}
	return $retval;
}


/**
 ** Saves a plain-text human-readable version of a test.
 */
function saveTestAsText( pageTest $test, $filename ) {
	$str = "Test: " . $test->getPagePath();
	foreach ( $test->getParams() as $param => $value ) {
		$str .= "\n$param: $value";
	}
	$str .= "\nGet-to-post URL: " . getAsURL( $test ) . "\n";
	saveFile( $str, $filename );
}


/**
 ** Saves a test as a standalone basic PHP script that shows this one problem.
 **        Resulting script requires PHP-Curl be installed in order to work.
 */
function saveTestAsPHP( pageTest $test, $filename ) {
	$str = "<?php\n"
		. "\$params = " . var_export( escapeForCurl( $test->getParams() ), true ) . ";\n"
		. "\$ch = curl_init();\n"
		. "curl_setopt(\$ch, CURLOPT_POST, 1);\n"
		. "curl_setopt(\$ch, CURLOPT_POSTFIELDS, \$params );\n"
		. "curl_setopt(\$ch, CURLOPT_URL, " . var_export( WIKI_BASE_URL . $test->getPagePath(), true ) . ");\n"
		. "curl_setopt(\$ch, CURLOPT_RETURNTRANSFER,1);\n"
		.  ( $test->getCookie() ? "curl_setopt(\$ch, CURLOPT_COOKIE, " . var_export( $test->getCookie(), true ) . ");\n" : "" )
		. "\$result=curl_exec(\$ch);\n"
		. "curl_close (\$ch);\n"
		. "print \$result;\n"
		. "\n";
	saveFile( $str, $filename );
}


/**
 ** Escapes a value so that it can be used on the command line by Curl.
 **        Specifically, "<" and "@" need to be escaped if they are the first character,
 **        otherwise  curl interprets these as meaning that we want to insert a file.
 */
function escapeForCurl( array $input_params ) {
	$output_params = array();
	foreach ( $input_params as $param => $value ) {
		if ( strlen( $value ) > 0 && ( $value[0] == "@" || $value[0] == "<" ) ) {
			$value = "\\" . $value;
		}
		$output_params[$param] = $value;
	}
	return $output_params;
}


/**
 ** Saves a test as a standalone CURL shell script that shows this one problem.
 **        Resulting script requires standalone Curl be installed in order to work.
 */
function saveTestAsCurl( pageTest $test, $filename ) {
	$str = "#!/bin/bash\n"
		. "curl --silent --include --globoff \\\n"
		. ( $test->getCookie() ? " --cookie " . escapeshellarg( $test->getCookie() ) . " \\\n" : "" );
	foreach ( escapeForCurl( $test->getParams() ) as $param => $value ) {
		$str .= " -F " . escapeshellarg( $param ) . "=" . escapeshellarg( $value ) . " \\\n";
	}
	$str .= " " . escapeshellarg( WIKI_BASE_URL . $test->getPagePath() ); // beginning space matters.
	$str .= "\n";
	saveFile( $str, $filename );
	chmod( $filename, 0755 ); // make executable
}


/**
 ** Saves the internal data structure to file.
 */
function saveTestData ( pageTest $test, $filename ) {
	saveFile( serialize( $test ),  $filename );
}


/**
 ** saves a test in the various formats.
 */
function saveTest( pageTest $test, $testname ) {
	$base_name = DIRECTORY . "/" . $testname;
	saveTestAsText( $test, $base_name . INFO_FILE );
	saveTestAsPHP ( $test, $base_name . PHP_TEST );
	saveTestAsCurl( $test, $base_name . CURL_TEST );
	saveTestData  ( $test, $base_name . DATA_FILE );
}


// ////////////////// MEDIAWIKI OUTPUT /////////////////////////

/**
 ** Asks MediaWiki for the HTML output of a test.
 */
function wikiTestOutput( pageTest $test ) {

	$ch = curl_init();

	// specify the cookie, if required.
	if ( $test->getCookie() ) curl_setopt( $ch, CURLOPT_COOKIE, $test->getCookie() );
	curl_setopt( $ch, CURLOPT_POST, 1 );                          // save form using a POST

	$params = escapeForCurl( $test->getParams() );
	curl_setopt( $ch, CURLOPT_POSTFIELDS, $params );             // load the POST variables

	curl_setopt( $ch, CURLOPT_URL, WIKI_BASE_URL . $test->getPagePath() );  // set url to post to
	curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1 );                 // return into a variable

	$result = curl_exec ( $ch );

	// if we encountered an error, then say so, and return an empty string.
	if ( curl_error( $ch ) ) {
		print "\nCurl error #: " . curl_errno( $ch ) . " - " . curl_error ( $ch );
		$result = "";
	}

	curl_close ( $ch );

	return $result;
}


// ////////////////// HTML VALIDATION /////////////////////////

/*
 ** Asks the validator whether this is valid HTML, or not.
 */
function validateHTML( $text ) {

	$params = array ( "fragment"   => $text );

	$ch = curl_init();

	curl_setopt( $ch, CURLOPT_POST, 1 );                    // save form using a POST
	curl_setopt( $ch, CURLOPT_POSTFIELDS, $params );        // load the POST variables
	curl_setopt( $ch, CURLOPT_URL, VALIDATOR_URL );         // set url to post to
	curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1 );           // return into a variable

	$result = curl_exec ( $ch );

	// if we encountered an error, then log it, and exit.
	if ( curl_error( $ch ) ) {
		trigger_error( "Curl error #: " . curl_errno( $ch ) . " - " . curl_error ( $ch ) );
		print "Curl error #: " . curl_errno( $ch ) . " - " . curl_error ( $ch ) . " - exiting.\n";
		exit( 1 );
	}

	curl_close ( $ch );

	$valid = ( strpos( $result, "Failed validation" ) === false );

	return array( $valid, $result );
}


/**
 ** Get tidy to check for no HTML errors in the output file (e.g. unescaped strings).
 */
function tidyCheckFile( $name ) {
	$file = DIRECTORY . "/" . $name;
	$command = PATH_TO_TIDY . " -output /tmp/out.html -quiet $file 2>&1";
	$x = `$command`;

	// Look for the most interesting Tidy errors and warnings.
	if (   strpos( $x, "end of file while parsing attributes" ) !== false
			|| strpos( $x, "attribute with missing trailing quote mark" ) !== false
			|| strpos( $x, "missing '>' for end of tag" ) !== false
			|| strpos( $x, "Error:" ) !== false ) {
		print "\nTidy found something - view details with: $command";
		return false;
	} else {
		return true;
	}
}


/**
 ** Returns whether or not an database error log file has changed in size since
 **        the last time this was run. This is used to tell if a test caused a DB error.
 */
function dbErrorLogged() {
	static $filesize;

	// first time running this function
	if ( !isset( $filesize ) ) {
		// create log if it does not exist
		if ( DB_ERROR_LOG_FILE && !file_exists( DB_ERROR_LOG_FILE ) ) {
			saveFile( '', DB_ERROR_LOG_FILE );
		}
		$filesize = filesize( DB_ERROR_LOG_FILE );
		return false;
	}

	$newsize = filesize( DB_ERROR_LOG_FILE );
	// if the log has grown, then assume the current test caused it.
	if ( $newsize != $filesize ) {
		$filesize = $newsize;
		return true;
	}

	return false;
}

// //////////////// TOP-LEVEL PROBLEM-FINDING FUNCTION ////////////////////////

/**
 ** takes a page test, and runs it and tests it for problems in the output.
 **        Returns: False on finding a problem, or True on no problems being found.
 */
function runWikiTest( pageTest $test, &$testname, $can_overwrite = false ) {

	// by default don't overwrite a previous test of the same name.
	while ( ! $can_overwrite && file_exists( DIRECTORY . "/" . $testname . DATA_FILE ) ) {
		$testname .= "-" . mt_rand( 0, 9 );
	}

	$filename = DIRECTORY . "/" . $testname . DATA_FILE;

	// Store the time before and after, to find slow pages.
	$before = microtime( true );

	// Get MediaWiki to give us the output of this test.
	$wiki_preview = wikiTestOutput( $test );

	$after = microtime( true );

	// if we received no response, then that's interesting.
	if ( $wiki_preview == "" ) {
		print "\nNo response received for: $filename";
		return false;
	}

	// save output HTML to file.
	$html_file = DIRECTORY . "/" . $testname . HTML_FILE;
	saveFile( $wiki_preview,  $html_file );

	// if there were PHP errors in the output, then that's interesting too.
	if (       strpos( $wiki_preview, "<b>Warning</b>: "        ) !== false
			|| strpos( $wiki_preview, "<b>Fatal error</b>: "    ) !== false
			|| strpos( $wiki_preview, "<b>Notice</b>: "         ) !== false
			|| strpos( $wiki_preview, "<b>Error</b>: "          ) !== false
			|| strpos( $wiki_preview, "<b>Strict Standards:</b>" ) !== false
			) {
		$error = substr( $wiki_preview, strpos( $wiki_preview, "</b>:" ) + 7, 50 );
		// Avoid probable PHP bug with bad session ids; http://bugs.php.net/bug.php?id=38224
		if ( $error != "Unknown: The session id contains illegal character" ) {
			print "\nPHP error/warning/notice in HTML output: $html_file ; $error";
			return false;
		}
	}

	// if there was a MediaWiki Backtrace message in the output, then that's also interesting.
	if ( strpos( $wiki_preview, "Backtrace:" ) !== false ) {
		print "\nInternal MediaWiki error in HTML output: $html_file";
		return false;
	}

	// if there was a Parser error comment in the output, then that's potentially interesting.
	if ( strpos( $wiki_preview, "!-- ERR" ) !== false ) {
		print "\nParser Error comment in HTML output: $html_file";
		return false;
	}

	// if a database error was logged, then that's definitely interesting.
	if ( dbErrorLogged() ) {
		print "\nDatabase Error logged for: $filename";
		return false;
	}

	// validate result
	$valid = true;
	if ( VALIDATE_ON_WEB ) {
		list ( $valid, $validator_output ) = validateHTML( $wiki_preview );
		if ( !$valid ) print "\nW3C web validation failed - view details with: html2text " . DIRECTORY . "/" . $testname . ".validator_output.html";
	}

	// Get tidy to check the page, unless we already know it produces non-XHTML output.
	if ( $test->tidyValidate() ) {
		$valid = tidyCheckFile( $testname . HTML_FILE ) && $valid;
	}

	// if it took more than 2 seconds to render, then it may be interesting too. (Possible DoS attack?)
	if ( ( $after - $before ) >= 2 ) {
		print "\nParticularly slow to render (" . round( $after - $before, 2 ) . " seconds): $filename";
		return false;
	}

	if ( $valid ) {
		// Remove temp HTML file if test was valid:
		unlink( $html_file );
	} elseif ( VALIDATE_ON_WEB ) {
		saveFile( $validator_output,   DIRECTORY . "/" . $testname . ".validator_output.html" );
	}

	return $valid;
}


// ///////////////// RERUNNING OLD TESTS ///////////////////

/**
 ** We keep our failed tests so that they can be rerun.
 **        This function does that retesting.
 */
function rerunPreviousTests() {
	print "Retesting previously found problems.\n";

	$dir_contents = scandir ( DIRECTORY );

	// sort file into the order a normal person would use.
	natsort ( $dir_contents );

	foreach ( $dir_contents as $file ) {

		// if file is not a test, then skip it.
		// Note we need to escape any periods or will be treated as "any character".
		$matches = array();
		if ( !preg_match( "/(.*)" . str_replace( ".", "\.", DATA_FILE ) . "$/", $file, $matches ) ) continue;

		// reload the test.
		$full_path = DIRECTORY . "/" . $file;
		$test = unserialize( file_get_contents( $full_path ) );

		// if this is not a valid test, then skip it.
		if ( ! $test instanceof pageTest ) {
			print "\nSkipping invalid test - $full_path";
			continue;
		}

		// The date format is in Apache log format, which makes it easier to locate
		// which retest caused which error in the Apache logs (only happens usually if
		// apache segfaults).
		if ( !QUIET ) print "[" . date ( "D M d H:i:s Y" ) . "] Retesting $file (" . get_class( $test ) . ")";

		// run test
		$testname = $matches[1];
		$valid = runWikiTest( $test, $testname, true );

		if ( !$valid ) {
			saveTest( $test, $testname );
			if ( QUIET ) {
				print "\nTest: " . get_class( $test ) . " ; Testname: $testname\n------";
			} else {
				print "\n";
			}
		}
		else {
			if ( !QUIET ) print "\r";
			if ( DELETE_PASSED_RETESTS ) {
				$prefix = DIRECTORY . "/" . $testname;
				if ( is_file( $prefix . DATA_FILE ) ) unlink( $prefix . DATA_FILE );
				if ( is_file( $prefix . PHP_TEST ) ) unlink( $prefix . PHP_TEST );
				if ( is_file( $prefix . CURL_TEST ) ) unlink( $prefix . CURL_TEST );
				if ( is_file( $prefix . INFO_FILE ) ) unlink( $prefix . INFO_FILE );
			}
		}
	}

	print "\nDone retesting.\n";
}


// ////////////////////  MAIN LOOP  ////////////////////////


// first check whether CURL is installed, because sometimes it's not.
if ( ! function_exists( 'curl_init' ) ) {
	die( "Could not find 'curl_init' function. Is the curl extension compiled into PHP?\n" );
}

// Initialization of types. wikiFuzz doesn't have a constructor because we want to
// access it staticly and not have any globals.
wikiFuzz::$types = array_keys( wikiFuzz::$data );

// Make directory if doesn't exist
if ( !is_dir( DIRECTORY ) ) {
	mkdir ( DIRECTORY, 0700 );
}
// otherwise, we first retest the things that we have found in previous runs
elseif ( RERUN_OLD_TESTS ) {
	rerunPreviousTests();
}

// main loop.
$start_time = date( "U" );
$num_errors = 0;
if ( !QUIET ) {
	print "Beginning main loop. Results are stored in the " . DIRECTORY . " directory.\n";
	print "Press CTRL+C to stop testing.\n";
}

for ( $count = 0; true; $count++ ) {
	if ( !QUIET ) {
		// spinning progress indicator.
		switch( $count % 4 ) {
			case '0': print "\r/";  break;
			case '1': print "\r-";  break;
			case '2': print "\r\\"; break;
			case '3': print "\r|";  break;
		}
		print " $count";
	}

	// generate a page test to run.
	$test = selectPageTest( $count );

	$mins = ( date( "U" ) - $start_time ) / 60;
	if ( !QUIET && $mins > 0 ) {
		print ".  $num_errors poss errors. "
			. floor( $mins ) . " mins. "
			. round ( $count / $mins, 0 ) . " tests/min. "
			. get_class( $test ); // includes the current test name.
	}

	// run this test against MediaWiki, and see if the output was valid.
	$testname = $count;
	$valid = runWikiTest( $test, $testname, false );

	// save the failed test
	if ( ! $valid ) {
		if ( QUIET ) {
			print "\nTest: " . get_class( $test ) . " ; Testname: $testname\n------";
		} else {
			print "\n";
		}
		saveTest( $test, $testname );
		$num_errors += 1;
	} elseif ( KEEP_PASSED_TESTS ) {
		// print current time, with microseconds (matches "strace" format), and the test name.
		print " " . date( "H:i:s." ) . substr( current( explode( " ", microtime() ) ), 2 ) . " " . $testname;
		saveTest( $test, $testname );
	}

	// stop if we have reached max number of errors.
	if ( defined( "MAX_ERRORS" ) && $num_errors >= MAX_ERRORS ) {
		break;
	}

	// stop if we have reached max number of mins runtime.
	if ( defined( "MAX_RUNTIME" ) && $mins >= MAX_RUNTIME ) {
		break;
	}
}