This file is indexed.

/usr/share/weechat/python/chanop.py is in weechat-scripts 20131007-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
# -*- coding: utf-8 -*-
###
# Copyright (c) 2009-2013 by Elián Hanisch <lambdae2@gmail.com>
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
###

###
#   Helper script for IRC Channel Operators
#
#   Inspired by auto_bleh.pl (irssi) and chanserv.py (xchat) scripts.
#
#   Networks like Freenode and some channels encourage operators to not stay
#   permanently with +o privileges and only use it when needed. This script
#   works along those lines, requesting op, kick/ban/etc and deop
#   automatically with a single command.
#   Still this script is very configurable and its behaviour can be configured
#   in a per server or per channel basis so it can fit most needs without
#   changing its code.
#
#   Features several completions for ban/quiet masks and a memory for channel
#   masks and users (so users that parted are still bannable by nick).
#
#
#   Commands (see detailed help with /help in WeeChat):
#   *      /oop: Request or give op.
#   *    /odeop: Drop or remove op.
#   *    /okick: Kick user (or users).
#   *     /oban: Apply ban mask.
#   *   /ounban: Remove ban mask.
#   *   /oquiet: Apply quiet mask.
#   * /ounquiet: Remove quiet mask.
#   * /obankick: Ban and kick user (or users)
#   *   /otopic: Change channel topic
#   *    /omode: Change channel modes
#   *    /olist: List cached masks (bans or quiets)
#   *   /ovoice: Give voice to user
#   * /odevoice: Remove voice from user
#
#
#   Settings:
#   Most configs (unless noted otherwise) can be defined for a server or a
#   channel in particular, so it is possible to request op in different
#   networks, stay always op'ed in one channel while
#   auto-deop in another.
#
#   For define an option for a specific server use:
#   /set plugins.var.python.chanop.<option>.<server> "value"
#   For define it in a specific channel use:
#   /set plugins.var.python.chanop.<option>.<server>.<#channel> "value"
#
#   * plugins.var.python.chanop.op_command:
#     Here you define the command the script must run for request op, normally
#     is a /msg to a bot, like chanserv in freenode or Q in quakenet.
#     It accepts the special vars $server, $channel and $nick
#
#     By default it ask op to chanserv, if your network doesn't use chanserv,
#     then you must change it.
#
#     Examples:
#     /set plugins.var.python.chanop.op_command
#          "/msg chanserv op $channel $nick"
#     (globally for all servers, like freenode and oftc)
#     /set plugins.var.python.chanop.op_command.quakenet
#          "/msg q op $channel $nick"
#     (for quakenet only)
#
#   * plugins.var.python.chanop.autodeop:
#     Enables auto-deop'ing after using any of the ban or kick commands.
#     Note that if you got op manually (like with /oop) then the script won't
#     deop you.
#     Valid values: 'on', 'off' Default: 'on'
#
#   * plugins.var.python.chanop.autodeop_delay:
#     Time it must pass (without using any commands) before auto-deop, in
#     seconds. Using zero causes to deop immediately.
#     Default: 180
#
#   * plugins.var.python.chanop.default_banmask:
#     List of keywords separated by comas. Defines default banmask, when using
#     /oban, /obankick or /oquiet
#     You can use several keywords for build a banmask, each keyword defines how
#     the banmask will be generated for a given hostmask, see /help oban.
#     Valid keywords are: nick, user, host and exact.
#     Default: 'host'
#
#     Examples:
#     /set plugins.var.python.chanop.default_banmask host
#     (bans with *!*@host)
#     /set plugins.var.python.chanop.default_banmask host,user
#     (bans with *!user@host)
#
#   * plugins.var.python.chanop.kick_reason:
#     Default kick reason if none was given in the command.
#
#   * plugins.var.python.chanop.enable_remove:
#     If enabled, it will use "/quote remove" command instead of /kick, enable
#     it only in networks that support it, like freenode.
#     Valid values: 'on', 'off' Default: 'off'
#
#     Example:
#     /set plugins.var.python.chanop.enable_remove.freenode on
#
#   * plugins.var.python.chanop.display_affected:
#     Whenever a new ban is set, chanop will show the users affected by it.
#     This is intended for help operators to see if their ban is too wide or
#     point out clones in the channel.
#     Valid values: 'on', 'off' Default: 'off'
#
#
#   The following configs are global and can't be defined per server or channel.
#
#   * plugins.var.python.chanop.enable_multi_kick:
#     Enables kicking multiple users with /okick command.
#     Be careful with this as you can kick somebody by accident if
#     you're not careful when writting the kick reason.
#
#     This also applies to /obankick command, multiple bankicks would be enabled.
#     Valid values: 'on', 'off' Default: 'off'
#
#   * plugins.var.python.chanop.enable_bar:
#     This will enable a pop-up bar for displaying chanop messages that would
#     otherwise be printed in the buffer. This bar also shows in realtime the
#     users affected by a ban you're about to set.
#     Valid values: 'on', 'off' Default: 'on'
#
#
#   The following configs are defined per server and are updated by the script only.
#
#   * plugins.var.python.chanop.watchlist:
#     Indicates to chanop which channels should watch and keep track of users and
#     masks. This config is automatically updated when you use any command that needs
#     op, so manual setting shouldn't be needed.
#
#   * plugins.var.python.chanop.isupport:
#     Only used in WeeChat versions prior to 0.3.3 which lacked support for
#     irc_005 messages. These aren't meant to be set manually.
#
#
#   Completions:
#     Chanop has several completions, documented here. Some aren't used by chanop
#     itself, but can be used in aliases with custom completions.
#     Examples:
#     apply exemptions with mask autocompletion
#     /alias -completion %(chanop_ban_mask) exemption /mode $channel +e
#     if you use grep.py script, grep with host autocompletion, for look clones.
#     /alias -completion %(chanop_hosts) ogrep /grep
#
#   * chanop_unban_mask (used in /ounban)
#     Autocompletes with banmasks set in current channel, requesting them if needed.
#     Supports patterns for autocomplete several masks: *<tab> for all bans, or
#     *192.168*<tab> for bans with '192.168' string.
#
#   * chanop_unquiet (used in /ounquiet)
#     Same as chanop_unban_mask, but with masks for q channel mode.
#
#   * chanop_ban_mask (used in /oban and /oquiet)
#     Given a partial IRC hostmask, it will try to complete with hostmasks of current
#     users: *!*@192<tab> will try to complete with matching users, like
#     *!*@192.168.0.1
#
#   * chanop_nicks (used in most commands)
#     Autocompletes nicks, same as WeeChat's completer, but using chanop's user
#     cache, so nicks from users that parted the channel will be still be completed.
#
#   * chanop_users (not used by chanop)
#     Same as chanop_nicks, but with the usename part of the hostmask.
#
#   * chanop_hosts (not used by chanop)
#     Same as chanop_nicks, but with the host part of the hostmask (includes previously used
#     hostnames).
#
#
#   TODO
#   * use dedicated config file like in urlgrab.py?
#   * ban expire time
#   * save ban.mask and ban.hostmask across reloads
#   * allow to override quiet command (for quiet with ChanServ)
#   * freenode:
#    - support for bans with channel forward
#    - support for extbans (?)
#   * Sort completions by user activity
#
#
#   History:
#   2013-05-24
#   version 0.3.1: bug fixes
#   * fix exceptions while fetching bans with /mode
#   * fix crash with /olist command in networks that don't support +q channel masks.
#
#   2013-04-14
#   version 0.3:
#   * cycle between different banmasks in /oban /oquiet commands.
#   * added pop-up bar for show information.
#   * save ban mask information (date and operator)
#   * remove workarounds for < 0.3.2 weechat versions
#   * python 3.0 compatibility (not tested)
#
#   2013-01-02
#   version 0.2.7: bug fixes:
#   * fix /obankick, don't deop before kicking.
#
#   2011-09-18
#   version 0.2.6: bug fixes:
#   * update script to work with freenode's new quiet messages.
#   * /omode wouldn't work with several modes.
#
#   2011-05-31
#   version 0.2.5: bug fixes:
#   * /omode -o nick wouldn't work due to the deopNow switch.
#   * unban_completer could fetch the same masks several times.
#   * removing ban forwards falied when using exact mask.
#   * user nick wasn't updated in every call.
#
#   2011-02-02
#   version 0.2.4: fix python 2.5 compatibility
#
#   2011-01-09
#   version 0.2.3: bug fixes.
#
#   2010-12-23
#   version 0.2.2: bug fixes.
#
#   2010-10-28
#   version 0.2.1: refactoring mostly
#   * deop_command option removed
#   * removed --webchat switch, freenode's updates made it superfluous.
#   * if WeeChat doesn't know a hostmask, use /userhost or /who if needed.
#   * /oban and /oquiet without arguments show ban/quiet list.
#   * most commands allows '-o' option, that forces immediate deop (without configured delay).
#   * updated for WeeChat 0.3.4 (irc_nick infolist changes)
#
#   2010-09-20
#   version 0.2: major update
#   * fixed quiets for ircd-seven (freenode)
#   * implemented user and mask cache.
#   * added commands:
#     - /ovoice /odevoice for de/voice users.
#     - /omode for change channel modes.
#     - /olist for list bans/quiets on cache.
#   * changed /omute and /ounmute commands to /oquiet and /ounquiet, as q masks
#     is refered as a quiet rather than a mute.
#   * autocompletions:
#     - for bans set on a channel.
#     - for make new bans.
#     - for nicks/usernames/hostnames.
#   * /okban renamed to /obankick. This is because /okban is too similar to
#     /okick and bankicking somebody due to tab fail was too easy.
#   * added display_affected feature.
#   * added --webchat ban option.
#   * config options removed:
#     - merge_bans: superseded by isupport methods.
#     - enable_mute: superseded by isupport methods.
#     - invert_kickban_order: now is fixed to "ban, then kick"
#   * Use WeeChat isupport infos.
#   * /oop and /odeop can op/deop other users.
#
#   2009-11-9
#   version 0.1.1: fixes
#   * script renamed to 'chanop' because it was causing conflicts with python
#     'operator' module
#   * added /otopic command
#
#   2009-10-31
#   version 0.1: Initial release
###

WEECHAT_VERSION = (0x30200, '0.3.2')

SCRIPT_NAME    = "chanop"
SCRIPT_AUTHOR  = "Elián Hanisch <lambdae2@gmail.com>"
SCRIPT_VERSION = "0.3.1"
SCRIPT_LICENSE = "GPL3"
SCRIPT_DESC    = "Helper script for IRC Channel Operators"

# default settings
settings = {
'op_command'            :'/msg chanserv op $channel $nick',
'autodeop'              :'on',
'autodeop_delay'        :'180',
'default_banmask'       :'host',
'enable_remove'         :'off',
'kick_reason'           :'',
'enable_multi_kick'     :'off',
'display_affected'      :'on',
'enable_bar'            :'on',
}

try:
    import weechat
    from weechat import WEECHAT_RC_OK, prnt
    import_ok = True
except ImportError:
    print("This script must be run under WeeChat.")
    print("Get WeeChat now at: http://www.weechat.org/")
    import_ok = False

import os
import re
import time
import string
import getopt
from collections import defaultdict
from shelve import DbfilenameShelf as Shelf

chars = string.maketrans('', '')

# -----------------------------------------------------------------------------
# Messages

script_nick = SCRIPT_NAME
def error(s, buffer=''):
    """Error msg"""
    prnt(buffer, '%s%s %s' % (weechat.prefix('error'), script_nick, s))
    value = weechat.config_get_plugin('debug')
    if value and boolDict[value]:
        import traceback
        if traceback.sys.exc_type:
            trace = traceback.format_exc()
            prnt('', trace)

def say(s, buffer=''):
    """normal msg"""
    prnt(buffer, '%s\t%s' %(script_nick, s))

def _no_debug(*args):
    pass

debug = _no_debug

# -----------------------------------------------------------------------------
# Config

# TODO Need to refactor all this too

boolDict = {'on':True, 'off':False, True:'on', False:'off'}
def get_config_boolean(config, get_function=None, **kwargs):
    if get_function and callable(get_function):
        value = get_function(config, **kwargs)
    else:
        value = weechat.config_get_plugin(config)
    try:
        return boolDict[value]
    except KeyError:
        default = settings[config]
        error("Error while fetching config '%s'. Using default value '%s'." %(config, default))
        error("'%s' is invalid, allowed: 'on', 'off'" %value)
        return boolDict[default]

def get_config_int(config, get_function=None):
    if get_function and callable(get_function):
        value = get_function(config)
    else:
        value = weechat.config_get_plugin(config)
    try:
        return int(value)
    except ValueError:
        default = settings[config]
        error("Error while fetching config '%s'. Using default value '%s'." %(config, default))
        error("'%s' is not a number." %value)
        return int(default)

valid_banmask = set(('nick', 'user', 'host', 'exact'))
def get_config_banmask(config='default_banmask', get_function=None):
    if get_function and callable(get_function):
        value = get_function(config)
    else:
        value = weechat.config_get_plugin(config)
    values = value.lower().split(',')
    for value in values:
        if value not in valid_banmask:
            default = settings[config]
            error("Error while fetching config '%s'. Using default value '%s'." %(config, default))
            error("'%s' is an invalid value, allowed: %s." %(value, ', '.join(valid_banmask)))
            return default
    #debug("default banmask: %s" %values)
    return values

def get_config_list(config):
    value = weechat.config_get_plugin(config)
    if value:
        return value.split(',')
    else:
        return []

def get_config_specific(config, server='', channel=''):
    """Gets config defined for either server or channel."""
    value = None
    if server and channel:
        string = '%s.%s.%s' %(config, server, channel)
        value = weechat.config_get_plugin(string)
    if server and not value:
        string = '%s.%s' %(config, server)
        value = weechat.config_get_plugin(string)
    if not value:
        value = weechat.config_get_plugin(config)
    return value

# -----------------------------------------------------------------------------
# Utils

now = lambda: int(time.time())

def time_elapsed(elapsed, ret=None, level=2):
    time_hour = 3600
    time_day  = 86400
    time_year = 31536000

    if ret is None:
        ret = []

    if not elapsed:
        return ''

    if elapsed > time_year:
        years, elapsed = elapsed // time_year, elapsed % time_year
        ret.append('%s%s' %(years, 'y'))
    elif elapsed > time_day:
        days, elapsed = elapsed // time_day, elapsed % time_day
        ret.append('%s%s' %(days, 'd'))
    elif elapsed > time_hour:
        hours, elapsed = elapsed // time_hour, elapsed % time_hour
        ret.append('%s%s' %(hours, 'h'))
    elif elapsed > 60:
        mins, elapsed = elapsed // 60, elapsed % 60
        ret.append('%s%s' %(mins, 'm'))
    else:
        secs, elapsed = elapsed, 0
        ret.append('%s%s' %(secs, 's'))

    if len(ret) >= level or not elapsed:
        return ' '.join(ret)

    ret = time_elapsed(elapsed, ret, level)
    return ret

# -----------------------------------------------------------------------------
# IRC utils

_hostmaskRe = re.compile(r':?\S+!\S+@\S+') # poor but good enough
def is_hostmask(s):
    """Returns whether or not the string s starts with something like a hostmask."""
    return _hostmaskRe.match(s) is not None

def is_ip(s):
    """Returns whether or not a given string is an IPV4 address."""
    import socket
    try:
        return bool(socket.inet_aton(s))
    except socket.error:
        return False

_reCache = {}
def cachedPattern(f):
    """Use cached regexp object or compile a new one from pattern."""
    def getRegexp(pattern, *arg):
        try:
            regexp = _reCache[pattern]
        except KeyError:
            s = '^'
            for c in pattern:
                if c == '*':
                    s += '.*'
                elif c == '?':
                    s += '.'
                elif c in '[{':
                    s += r'[\[{]'
                elif c in ']}':
                    s += r'[\]}]'
                elif c in '|\\':
                    s += r'[|\\]'
                else:
                    s += re.escape(c)
            s += '$'
            regexp = re.compile(s, re.I)
            _reCache[pattern] = regexp
        return f(regexp, *arg)
    return getRegexp

def hostmaskPattern(f):
    """Check if pattern is for match a hostmask and remove ban forward if there's one."""
    def checkPattern(pattern, arg):
        # XXX this needs a refactor
        if is_hostmask(pattern):
            # nick!user@host$#channel
            if '$' in pattern:
                pattern = pattern.partition('$')[0]
            if isinstance(arg, list):
                arg = [ s for s in arg if is_hostmask(s) ]
            elif not is_hostmask(arg):
                return ''

            rt = f(pattern, arg)
            # this doesn't match any mask in args with a channel forward
            pattern += '$*'
            if isinstance(arg, list):
                rt.extend(f(pattern, arg))
            elif not rt:
                rt = f(pattern, arg)
            return rt

        return ''
    return checkPattern

match_string = lambda r, s: r.match(s) is not None
match_list = lambda r, L: [ s for s in L if r.match(s) is not None ]

pattern_match = cachedPattern(match_string)
pattern_match_list = cachedPattern(match_list)
hostmask_match = hostmaskPattern(pattern_match)
hostmask_match_list = hostmaskPattern(pattern_match_list)

def get_nick(s):
    """':nick!user@host' => 'nick'"""
    return weechat.info_get('irc_nick_from_host', s)

def get_user(s, trim=False):
    """'nick!user@host' => 'user'"""
    assert is_hostmask(s), "Invalid hostmask: %s" % s
    s = s[s.find('!') + 1:s.find('@')]
    if trim:
        # remove the stuff not part of the username.
        if s[0] == '~':
            return s[1:]
        elif s[:2] in ('i=', 'n='):
            return s[2:]
    return s

def get_host(s):
    """'nick!user@host' => 'host'"""
    assert is_hostmask(s), "Invalid hostmask: %s" % s
    if ' ' in s:
        return s[s.find('@') + 1:s.find(' ')]
    return s[s.find('@') + 1:]

def is_channel(s):
    return weechat.info_get('irc_is_channel', s)

def is_nick(s):
    return weechat.info_get('irc_is_nick', s)

def irc_buffer(buffer):
    """Returns pair (server, channel) or None if buffer isn't an irc channel"""
    get_string = weechat.buffer_get_string
    if get_string(buffer, 'plugin') == 'irc' \
            and get_string(buffer, 'localvar_type') == 'channel':
        channel = get_string(buffer, 'localvar_channel')
        server = get_string(buffer, 'localvar_server')
        return (server, channel)

# -----------------------------------------------------------------------------
# WeeChat classes

class InvalidIRCBuffer(Exception):
    pass

def catchExceptions(f):
    def function(*args, **kwargs):
        try:
            return f(*args, **kwargs)
        except Exception as e:
            error(e)
    return function

def callback(method):
    """This function will take a bound method or function and make it a callback."""
    # try to create a descriptive and unique name.
    func = method.func_name
    try:
        im_self = method.im_self
        try:
            inst = im_self.__name__
        except AttributeError:
            try:
                inst = im_self.name
            except AttributeError:
                raise Exception("Instance of %s has no __name__ attribute" %type(im_self))
        cls = type(im_self).__name__
        name = '_'.join((cls, inst, func))
    except AttributeError:
        # not a bound method
        name = func

    method = catchExceptions(method)

    # set our callback
    import __main__
    setattr(__main__, name, method)
    return name

def weechat_command(buffer, cmd):
    """I want to always keep debug() calls for this"""
    if buffer:
        debug("%ssending: %r buffer: %s", COLOR_WHITE, cmd, buffer)
    else:
        debug("%ssending: %r", COLOR_WHITE, cmd)
    weechat.command(buffer, cmd)

class Infolist(object):
    """Class for reading WeeChat's infolists."""

    fields = {
            'name'        :'string',
            'option_name' :'string',
            'value'       :'string',
            'host'        :'string',
            'flags'       :'integer',
            'prefixes'    :'string',
            'is_connected':'integer',
            'buffer'      :'pointer',
            }

    _use_flags = False

    def __init__(self, name, args='', pointer=''):
        self.cursor = 0
        #debug('Generating infolist %r %r', name, args)
        self.pointer = weechat.infolist_get(name, pointer, args)
        if self.pointer == '':
            raise Exception("Infolist initialising failed (name:'%s' args:'%s')" %(name, args))

    def __len__(self):
        """True False evaluation."""
        if self.pointer:
            return 1
        else:
            return 0

    def __del__(self):
        """Purge infolist if is no longer referenced."""
        self.free()

    def __getitem__(self, name):
        """Implement the evaluation of self[name]."""
        if self._use_flags and name == 'prefixes':
            name = 'flags'
        value = getattr(weechat, 'infolist_%s' %self.fields[name])(self.pointer, name)
        if self._use_flags and name == 'flags':
            value = self._flagsAsString(value)
        return value

    def _flagsAsString(self, n):
        s = ''
        if n & 32:
            s += '+'
        if n & 8:
            s += '@'
        return s

    def __iter__(self):
        def generator():
            while self.next():
                yield self
        return generator()

    def next(self):
        self.cursor = weechat.infolist_next(self.pointer)
        return self.cursor

    def prev(self):
        self.cursor = weechat.infolist_prev(self.pointer)
        return self.cursor

    def reset(self):
        """Moves cursor to beginning of infolist."""
        if self.cursor == 1: # only if we aren't in the beginning already
            while self.prev():
                pass

    def free(self):
        if self.pointer:
            weechat.infolist_free(self.pointer)
            self.pointer = ''

def nick_infolist(server, channel):
    try:
        return Infolist('irc_nick', '%s,%s' % (server, channel))
    except:
        raise InvalidIRCBuffer('%s.%s' % (server, channel))

class NoArguments(Exception):
    pass

class ArgumentError(Exception):
    pass

class Command(object):
    """Class for hook WeeChat commands."""
    description, usage, help = "WeeChat command.", "[define usage template]", "detailed help here"
    command = ''
    completion = ''

    def __init__(self):
        assert self.command, "No command defined"
        self.__name__ = self.command
        self._pointer = ''
        self._callback = ''

    def __call__(self, *args):
        return self.callback(*args)

    def callback(self, data, buffer, args):
        """Called by WeeChat when /command is used."""
        self.data, self.buffer, self.args = data, buffer, args
        debug("%s[%s] data: \"%s\" buffer: \"%s\" args: \"%s\"", COLOR_DARKGRAY,
                                                                 self.command,
                                                                 data,
                                                                 buffer,
                                                                 args)
        try:
            self.parser(args)  # argument parsing
        except ArgumentError as e:
            error('Argument error, %s' %e)
        except NoArguments:
            pass
        else:
            self.execute()
        return WEECHAT_RC_OK

    def parser(self, args):
        """Argument parsing, override if needed."""
        pass

    def execute(self):
        """This method is called when the command is run, override this."""
        pass

    def hook(self):
        assert not self._pointer, \
                "There's already a hook pointer, unhook first (%s)" %self.command
        self._callback = callback(self.callback)
        pointer = weechat.hook_command(self.command,
                                       self.description,
                                       self.usage,
                                       self.help,
                                       self.completion,
                                       self._callback, '')
        if pointer == '':
            raise Exception("hook_command failed: %s %s" % (SCRIPT_NAME, self.command))
        self._pointer = pointer

    def unhook(self):
        if self._pointer:
            weechat.unhook(self._pointer)
            self._pointer = ''
            self._callback = ''

class Bar(object):
    def __init__(self, name, hidden=False, items=''):
        self.name = name
        self.hidden = hidden
        self._pointer = ''
        self._items = items

    def new(self):
        assert not self._pointer, "Bar %s already created" % self.name
        pointer = weechat.bar_search(self.name)
        if not pointer:
            pointer = weechat.bar_new(self.name, boolDict[self.hidden], '0', 'window',
                                      'active', 'bottom', 'horizontal', 'vertical',
                                      '0', '1', 'default', 'cyan', 'blue', 'off',
                                      self._items)
            if not pointer:
                raise Exception("bar_new failed: %s %s" % (SCRIPT_NAME, self.name))

        self._pointer = pointer

    def getPointer(self):
        return weechat.bar_search(self.name)

    def show(self):
        pointer = self.getPointer()
        if pointer and self.hidden:
            weechat.bar_set(pointer, 'hidden', 'off')
            self.hidden = False
        return pointer

    def hide(self):
        pointer = self.getPointer()
        if pointer and not self.hidden:
            weechat.bar_set(pointer, 'hidden', 'on')
            self.hidden = True

    def remove(self):
        pointer = self.getPointer()
        if pointer:
            weechat.bar_remove(pointer)
            self._pointer = ''

    def __len__(self):
        """True False evaluation."""
        if self.getPointer():
            return 1
        else:
            return 0

class PopupBar(Bar):
    _timer_hook = ''
    popup_mode = False

    def popup(self, delay=10):
        if self.show():
            if self._timer_hook:
                weechat.unhook(self._timer_hook)
            self._timer_hook = weechat.hook_timer(delay * 1000, 0, 1, callback(self._timer), '')

    def _timer(self, data, counter):
        self.hide()
        self._timer_hook = ''
        return WEECHAT_RC_OK

# -----------------------------------------------------------------------------
# Per buffer variables

class BufferVariables(dict):
    """Keeps variables and objects of a specific buffer."""
    def __init__(self, buffer):
        self['buffer'] = buffer
        self['irc'] = IrcCommands(buffer)
        self['autodeop'] = True
        self['deopHook'] = self.opHook = self.opTimeout = None
        self['server'] = weechat.buffer_get_string(buffer, 'localvar_server')
        self['channel'] = weechat.buffer_get_string(buffer, 'localvar_channel')
        self['nick'] = weechat.info_get('irc_nick', self.server)

    def __getattr__(self, k):
        return self[k]

    def __setattr__(self, k, v):
        debug(' -- buffer[%s] %s ... %s => %s', self.buffer, k, self.get(k), v)
        self[k] = v

class ChanopBuffers(object):
    """Keeps track of BuffersVariables instances in chanop."""
    buffer = ''
    _buffer = {} # must be shared across instances
    def __getattr__(self, k):
        return self._buffer[self.buffer][k]

    def setup(self, buffer):
        self.buffer = buffer
        if buffer not in self._buffer:
            self._buffer[buffer] = BufferVariables(buffer)
        else:
            # update nick, it might have changed.
            self.vars.nick = weechat.info_get('irc_nick', self.vars.server)

    @property
    def vars(self):
        return self._buffer[self.buffer]

    def varsOf(self, buffer):
        return self._buffer[buffer]

    def replace_vars(self, s):
        try:
            return weechat.buffer_string_replace_local_var(self.buffer, s)
        except AttributeError:
            if '$channel' in s:
                s = s.replace('$channel', self.channel)
            if '$nick' in s:
                s = s.replace('$nick', self.nick)
            if '$server' in s:
                s = s.replace('$server', self.server)
            return s

    def get_config(self, config):
        #debug('config: %s' %config)
        return get_config_specific(config, self.server, self.channel)

    def get_config_boolean(self, config):
        return get_config_boolean(config, self.get_config)

    def get_config_int(self, config):
        return get_config_int(config, self.get_config)

# -----------------------------------------------------------------------------
# IRC messages queue

class Message(ChanopBuffers):
    command = None
    args = ()
    wait = 0
    def __init__(self, cmd=None, args=(), wait=0):
        if cmd:  self.command = cmd
        if args: self.args = args
        if wait: self.wait = wait

    def payload(self):
        cmd = self.command
        if cmd[0] != '/':
            cmd = '/' + cmd
        if self.args:
            cmd += ' ' + ' '.join(self.args)
        if self.wait:
            cmd = '/wait %s ' %self.wait + cmd
        return cmd

    def register(self, buffer):
        self.buffer = buffer

    def __call__(self):
        cmd = self.payload()
        if cmd:
            self.send(cmd)

    def send(self, cmd):
        weechat_command(self.buffer, cmd)

    def __repr__(self):
        return '<Message(%s, %s)>' %(self.command, self.args)

class IrcCommands(ChanopBuffers):
    """Class that manages and sends the script's commands to WeeChat."""

    # Special message classes
    class OpMessage(Message):
        def send(self, cmd):
            if self.irc.checkOp():
                # nothing to do
                return

            self.irc.interrupt = True
            Message.send(self, cmd)

            def modeOpCallback(buffer, signal, signal_data):
                vars = self.varsOf(buffer)
                data = 'MODE %s +o %s' % (vars.channel, vars.nick)
                signal = signal_data.split(None, 1)[1]
                if signal == data:
                    debug('GOT OP')
                    # add this channel to our watchlist
                    config = 'watchlist.%s' % vars.server
                    channels = CaseInsensibleSet(get_config_list(config))
                    if vars.channel not in channels:
                        channels.add(vars.channel)
                        value = ','.join(channels)
                        weechat.config_set_plugin(config, value)
                    weechat.unhook(vars.opHook)
                    weechat.unhook(vars.opTimeout)
                    vars.opTimeout = vars.opHook = None
                    vars.irc.interrupt = False
                    vars.irc.run()
                return WEECHAT_RC_OK

            def timeoutCallback(buffer, count):
                vars = self.varsOf(buffer)
                error("Couldn't get op in '%s', purging command queue..." % vars.channel)
                weechat.unhook(vars.opHook)
                if vars.deopHook:
                    weechat.unhook(vars.deopHook)
                    vars.deopHook = None
                vars.opTimeout = vars.opHook = None
                vars.irc.interrupt = False
                vars.irc.clear()
                return WEECHAT_RC_OK

            # wait for a while before timing out.
            self.vars.opTimeout = weechat.hook_timer(30*1000, 0, 1, callback(timeoutCallback),
                    self.buffer)

            self.vars.opHook = weechat.hook_signal('%s,irc_in2_MODE' %self.server,
                    callback(modeOpCallback), self.buffer)

    class UserhostMessage(Message):
        def send(self, cmd):
            self.irc.interrupt = True
            Message.send(self, cmd)

            def msgCallback(buffer, modifier, modifier_data, string):
                vars = self.varsOf(buffer)
                if vars.server != modifier_data:
                    return string
                nick, host = string.rsplit(None, 1)[1].split('=')
                nick, host = nick.strip(':*'), host[1:]
                hostmask = '%s!%s' % (nick, host)
                debug('USERHOST: %s %s', nick, hostmask)
                userCache.remember(modifier_data, nick, hostmask)
                weechat.unhook(vars.msgHook)
                weechat.unhook(vars.msgTimeout)
                vars.msgTimeout = vars.msgHook = None
                vars.irc.interrupt = False
                vars.irc.run()
                return ''

            def timeoutCallback(buffer, count):
                vars = self.varsOf(buffer)
                weechat.unhook(vars.msgHook)
                vars.msgTimeout = vars.msgHook = None
                vars.irc.interrupt = False
                vars.irc.clear()
                return WEECHAT_RC_OK

            # wait for a while before timing out.
            self.vars.msgTimeout = \
                weechat.hook_timer(30*1000, 0, 1, callback(timeoutCallback), self.buffer)

            self.vars.msgHook = weechat.hook_modifier('irc_in_302',
                    callback(msgCallback), self.buffer)


    class ModeMessage(Message):
        command = 'mode'
        def __init__(self, char=None, args=None, **kwargs):
            self.chars = [ char ]
            self.charargs = [ args ]
            self.args = (char, args)
            Message.__init__(self, **kwargs)

        def payload(self):
            args = []
            modeChar = []
            prefix = ''
            for m, a in zip(self.chars, self.charargs):
                if a:
                    if callable(a):
                        a = a()
                        if not a:
                            continue
                    args.append(a)
                if m[0] != prefix:
                    prefix = m[0]
                    modeChar.append(prefix)
                modeChar.append(m[1])
            args.insert(0, ''.join(modeChar))
            if args:
                self.args = args
                return Message.payload(self)


    class DeopMessage(ModeMessage):
        def send(self, cmd):
            if self.irc.checkOp():
                Message.send(self, cmd)

    # IrcCommands methods
    def __init__(self, buffer):
        self.interrupt = False
        self.commands = []
        self.buffer = buffer

    def checkOp(self):
        infolist = nick_infolist(self.server, self.channel)
        while infolist.next():
            if infolist['name'] == self.nick:
                return '@' in infolist['prefixes']
        return False

    def Op(self):
        if self.opHook and self.opTimeout:
            # already send command, wait for timeout
            return

        value = self.replace_vars(self.get_config('op_command'))
        if not value:
            raise Exception("No command defined for get op.")
        msg = self.OpMessage(value)
        self.queue(msg, insert=True)

    def Deop(self):
        msg = self.DeopMessage('-o', self.nick)
        self.queue(msg)

    def Mode(self, mode, args=None, wait=0):
        msg = self.ModeMessage(mode, args, wait=wait)
        self.queue(msg)

    def Kick(self, nick, reason=None, wait=0):
        if not reason:
            reason = self.get_config('kick_reason')
        if self.get_config_boolean('enable_remove'):
            cmd = '/quote remove %s %s :%s' %(self.channel, nick, reason)
            msg = Message(cmd, wait=wait)
        else:
            msg = Message('kick', (nick, reason), wait=wait)
        self.queue(msg)

    def Voice(self, nick):
        self.Mode('+v', nick)

    def Devoice(self, nick):
        self.Mode('-v', nick)

    def Userhost(self, nick):
        msg = self.UserhostMessage('USERHOST', (nick, ))
        self.queue(msg, insert=True) # USERHOST should be sent first

    def queue(self, message, insert=False):
        debug('queuing: %s', message)
        # merge /modes
        if self.commands and message.command == 'mode':
            max_modes = supported_maxmodes(self.server)
            msg = self.commands[-1]
            if msg.command == 'mode' and len(msg.chars) < max_modes:
                msg.chars.append(message.chars[0])
                msg.charargs.append(message.charargs[0])
                return
        if insert:
            self.commands.insert(0, message)
        else:
            self.commands.append(message)

    # it happened once and it wasn't pretty
    def safe_check(f):
        def abort_if_too_many_commands(self):
            if len(self.commands) > 10:
                error("Limit of 10 commands in queue reached, aborting.")
                self.clear()
            else:
                f(self)
        return abort_if_too_many_commands

    @safe_check
    def run(self):
        while self.commands and not self.interrupt:
            msg = self.commands.pop(0)
            msg.register(self.buffer)
            msg()
            if self.interrupt:
                #debug("Interrupting queue")
                break

    def clear(self):
        debug('clear queue (%s messages)', len(self.commands))
        self.commands = []

    def __repr__(self):
        return '<IrcCommands(%s)>' % ', '.join(map(repr, self.commands))

# -----------------------------------------------------------------------------
# User/Mask classes

_rfc1459trans = string.maketrans(string.ascii_uppercase + r'\[]',
                                 string.ascii_lowercase + r'|{}')
def IRClower(s):
    return s.translate(_rfc1459trans)

class CaseInsensibleString(str):
    def __init__(self, s=''):
        self.lowered = IRClower(s)

    lower    = lambda self: self.lowered
    translate = lambda self, trans: self.lowered
    __eq__   = lambda self, s: self.lowered == IRClower(s)
    __ne__   = lambda self, s: not self == s
    __hash__ = lambda self: hash(self.lowered)

def caseInsensibleKey(k):
    if isinstance(k, str):
        return CaseInsensibleString(k)
    elif isinstance(k, tuple):
        return tuple(map(caseInsensibleKey, k))
    return k

class CaseInsensibleDict(dict):
    key = staticmethod(caseInsensibleKey)

    def __init__(self, **kwargs):
        for k, v in kwargs.items():
            self[k] = v

    def __setitem__(self, k, v):
        dict.__setitem__(self, self.key(k), v)

    def __getitem__(self, k):
        return dict.__getitem__(self, self.key(k))

    def __delitem__(self, k):
        dict.__delitem__(self, self.key(k))

    def __contains__(self, k):
        return dict.__contains__(self, self.key(k))

    def pop(self, k):
        return dict.pop(self, self.key(k))

class CaseInsensibleDefaultDict(defaultdict, CaseInsensibleDict):
    pass

class CaseInsensibleSet(set):
    normalize = staticmethod(caseInsensibleKey)

    def __init__(self, iterable=()):
        iterable = map(self.normalize, iterable)
        set.__init__(self, iterable)

    def __contains__(self, v):
        return set.__contains__(self, self.normalize(v))

    def update(self, L):
        set.update(self, map(self.normalize, L))

    def add(self, v):
        set.add(self, self.normalize(v))

    def remove(self, v):
        set.remove(self, self.normalize(v))

class ChannelWatchlistSet(CaseInsensibleSet):
    _updated = False
    def __contains__(self, v):
        if not self._updated:
            self.__updateFromConfig()
        return CaseInsensibleSet.__contains__(self, v)

    def __updateFromConfig(self):
        self._updated = True
        infolist = Infolist('option', 'plugins.var.python.%s.watchlist.*' %SCRIPT_NAME)
        n = len('python.%s.watchlist.' %SCRIPT_NAME)
        while infolist.next():
            name = infolist['option_name']
            value = infolist['value']
            server = name[n:]
            if value:
                channels = value.split(',')
            else:
                channels = []
            self.update([ (server, channel) for channel in channels ])

chanopChannels = ChannelWatchlistSet()

class ServerChannelDict(CaseInsensibleDict):
    def getChannels(self, server, item=None):
        """Return a list of channels that match server and has item if given"""
        if item:
            return [ chan for serv, chan in self if serv == server and item in self[serv, chan] ]
        else:
            return [ chan for serv, chan in self if serv == server ]

    def purge(self):
        for key in self.keys():
            if key not in chanopChannels:
                debug('removing %s mask list, not in watchlist.', key)
                del self[key]
        for data in self.values():
            data.purge()

# -----------------------------------------------------------------------------
# Channel Modes (bans)

class MaskObject(object):
    def __init__(self, mask, hostmask=[], operator='', date=0, expires=0):
        self.mask = mask
        self.operator = operator
        if date:
            date = int(date)
        else:
            date = now()
        self.date = date
        if isinstance(hostmask, str):
            hostmask = [ hostmask ]
        self.hostmask = hostmask
        self.expires = int(expires)

    def serialize(self):
        data = ';'.join([ self.operator,
                          str(self.date),
                          str(self.expires),
                          ','.join(self.hostmask) ])
        return data

    def deserialize(self, data):
        op, date, expires, hostmasks = data.split(';')
        assert op and date, "Error reading chanmask option %s, missing operator or date" % self.mask
        if not is_hostmask(op):
            raise Exception('Error reading chanmask option %s, invalid usermask %r' \
                            % (self.mask, op))

        self.operator = op
        try:
            self.date = int(date)
        except ValueError:
            self.date = int(time.mktime(time.strptime(date,'%Y-%m-%d %H:%M:%S')))
        if expires:
            self.expires = int(expires)
        else:
            self.expires = 0
        if hostmasks:
            hostmasks = hostmasks.split(',')
            if not all(map(is_hostmask, hostmasks)):
                raise Exception('Error reading chanmask option %s, a hostmask is invalid: %s' \
                                % (self.mask, hostmasks))

            self.hostmask = hostmasks

    def __repr__(self):
        return "<MaskObject(%s)>" % self.mask

class MaskList(CaseInsensibleDict):
    """Single list of masks"""
    def __init__(self, server, channel):
        self.synced = 0

    def add(self, mask, **kwargs):
        if mask in self:
            # mask exists, update it
            ban = self[mask]
            for attr, value in kwargs.items():
                if value and not getattr(ban, attr):
                    setattr(ban, attr, value)
        else:
            ban = self[mask] = MaskObject(mask, **kwargs)
        return ban

#    def searchByNick(self, nick):
#        try:
#            hostmask = userCache.getHostmask(nick, self.server, self.channel)
#            return self.searchByHostmask(hostmask)
#        except KeyError:
#            return []

    def search(self, pattern, reverseMatch=False):
        if reverseMatch:
            L = [ mask for mask in self if hostmask_match(mask, pattern) ]
        else:
            L = pattern_match_list(pattern, self.keys())
        return L

    def purge(self):
        pass

class MaskCache(ServerChannelDict):
    """Keeps a cache of masks for different channels."""
    def add(self, server, channel, mask, **kwargs):
        """Adds a ban to (server, channel) banlist."""
        key = (server, channel)
        if key not in self:
            self[key] = MaskList(*key)
        ban = self[key].add(mask, **kwargs)
        return ban

    def remove(self, server, channel, mask=None):#, hostmask=None):
        key = (server, channel)
        try:
            if mask is None:
                del self[key]
            else:
                del self[key][mask]
                #debug("removing ban: %s" %banmask)
        except KeyError:
            pass

class ChanopCache(Shelf):
    def __init__(self, filename):
        path = os.path.join(weechat.info_get('weechat_dir', ''), filename)
        Shelf.__init__(self, path, writeback=True)

class ModeCache(ChanopCache):
    """class for store channel modes lists."""
    def __init__(self, filename):
        ChanopCache.__init__(self, filename)
        self.modes = set()
        self.map = CaseInsensibleDict()

        # reset all sync timers
        for cache in self.values():
            for masklist in cache.values():
                masklist.synced = 0

    def registerMode(self, mode, *args):
        if mode not in self:
            cache = MaskCache()
            self[mode] = cache

        if mode not in self.modes:
            self.modes.add(mode)

        self.map[mode] = mode
        for name in args:
            self.map[name] = mode

    def __getitem__(self, mode):
        try:
            return ChanopCache.__getitem__(self, mode)
        except KeyError:
            return ChanopCache.__getitem__(self, self.map[mode])

    def add(self, server, channel, mode, mask, **kwargs):
        assert mode in self.modes
        self[mode].add(server, channel, mask, **kwargs)

    def remove(self, server, channel, mode, mask):
        self[mode].remove(server, channel, mask)

    def purge(self):
        for cache in self.values():
            cache.purge()

class MaskSync(object):
    """Class for fetch and sync bans of any channel and mode."""
    __name__ = ''
    _hide_msg = False

    _hook_mask = ''
    _hook_end = ''

    # freenode new signals for list quiet messages
    _hook_quiet_mask = ''
    _hook_quiet_end = ''

    # sync queue stuff
    queue = []
    _maskbuffer = CaseInsensibleDefaultDict(list)
    _callback = CaseInsensibleDict()

    def hook(self):
        # 367 - ban mask
        # 368 - end of ban list
        # 728 - quiet mask
        # 729 - end of quiet list
        self.unhook()
        self._hook_mask = \
                weechat.hook_modifier('irc_in_367', callback(self._maskCallback), '')
        self._hook_end = \
                weechat.hook_modifier('irc_in_368', callback(self._endCallback), '')
        self._hook_quiet_mask = \
                weechat.hook_modifier('irc_in_728', callback(self._maskCallback), '')
        self._hook_quiet_end = \
                weechat.hook_modifier('irc_in_729', callback(self._endCallback), '')

    def unhook(self):
        for hook in ('_hook_mask',
                     '_hook_end',
                     '_hook_quiet_mask',
                     '_hook_quiet_end'):
            attr = getattr(self, hook)
            if attr:
                weechat.unhook(attr)
                setattr(self, hook, '')

    def fetch(self, server, channel, mode, callback=None):
        """Fetches masks for a given server and channel."""
        buffer = weechat.buffer_search('irc', 'server.%s' %server)
        if not buffer or not weechat.info_get('irc_is_channel', channel):
            # invalid server or channel
            return

        # check modes
        if mode not in supported_modes(server):
            return
        maskCache = modeCache[mode]
        key = (server, channel)
        # check the last time we did this
        try:
            masklist = maskCache[key]
            if (now() - masklist.synced) < 60:
                # don't fetch again
                return
        except KeyError:
            pass

        if not self.queue:
            self.queue.append((server, channel, mode))
            self._fetch(server, channel, mode)
        elif (server, channel, mode) not in self.queue:
            self.queue.append((server, channel, mode))

        if callback:
            self._callback[server, channel] = callback

    def _fetch(self, server, channel, mode):
        buffer = weechat.buffer_search('irc', 'server.%s' %server)
        if not buffer:
            return
        cmd = '/mode %s %s' %(channel, mode)
        self._hide_msg = True
        weechat_command(buffer, cmd)

    def _maskCallback(self, data, modifier, modifier_data, string):
        """callback for store a single mask."""
        #debug("MASK %s: %s %s", modifier, modifier_data, string)
        args = string.split()
        if self.queue:
            server, channel, _ = self.queue[0]
        else:
            server, channel = modifier_data, args[3]

        if modifier == 'irc_in_367':
            try:
                mask, op, date = args[4:]
            except IndexError:
                mask = args[4]
                op = date = None
        elif modifier == 'irc_in_728':
            mask, op, date = args[5:]

        # store temporally until "end list" msg
        self._maskbuffer[server, channel].append((mask, op, date))
        if self._hide_msg:
            string = ''
        return string

    def _endCallback(self, data, modifier, modifier_data, string):
        """callback for end of channel's mask list."""
        #debug("MASK END %s: %s %s", modifier, modifier_data, string)
        if self.queue:
            server, channel, mode = self.queue.pop(0)
        else:
            args = string.split()
            server, channel = modifier_data, args[3]
            if modifier == 'irc_in_368':
                mode = args[7]
            elif modifier == 'irc_in_729':
                mode = args[4]
            else:
                return string

        maskCache = modeCache[mode]

        # delete old masks in cache
        if (server, channel) in maskCache:
            masklist = maskCache[server, channel]
            banmasks = [ L[0] for L in self._maskbuffer[server, channel] ]
            for mask in masklist.keys():
                if mask not in banmasks:
                    del masklist[mask]

        for banmask, op, date in self._maskbuffer[server, channel]:
            maskCache.add(server, channel, banmask, operator=op, date=date)
        del self._maskbuffer[server, channel]
        try:
            maskList = maskCache[server, channel]
        except KeyError:
            maskList = maskCache[server, channel] = MaskList(server, channel)
        maskList.synced = now()

        # run hooked functions if any
        if (server, channel) in self._callback:
            self._callback[server, channel]()
            del self._callback[server, channel]

        if self._hide_msg:
            string = ''
        if self.queue:
            next = self.queue[0]
            self._fetch(*next)
        else:
            assert not self._maskbuffer, "mask buffer not empty: %s" % self._maskbuffer.keys()
            self._hide_msg = False
        return string

maskSync = MaskSync()

# -----------------------------------------------------------------------------
# User cache

class UserObject(object):
    def __init__(self, nick, hostmask=None):
        self.nick = nick
        if hostmask:
            self._hostmask = [ hostmask ]
        else:
            self._hostmask = []
        self.seen = now()
        self._channels = 0

    @property
    def hostmask(self):
        try:
            return self._hostmask[-1]
        except IndexError:
            return ''

    def update(self, hostmask=None):
        if hostmask and hostmask != self.hostmask:
            if hostmask in self._hostmask:
                del self._hostmask[self._hostmask.index(hostmask)]
            self._hostmask.append(hostmask)
        self.seen = now()

    def __len__(self):
        return len(self.hostmask)

    def __repr__(self):
        return '<UserObject(%s)>' %(self.hostmask or self.nick)

class ServerUserList(CaseInsensibleDict):
    def __init__(self, server):
        self.server = server
        buffer = weechat.buffer_search('irc', 'server.%s' %server)
        self.irc = IrcCommands(buffer)
        self._purge_time = 3600*4 # 4 hours

    def getHostmask(self, nick):
        user = self[nick]
        return user.hostmask

    def purge(self):
        """Purge old nicks"""
        n = now()
        for nick, user in self.items():
            if user._channels < 1 and (n - user.seen) > self._purge_time:
                #debug('purging old user: %s' % nick)
                del self[nick]

class UserList(ServerUserList):
    def __init__(self, server, channel):
        self.server = server
        self.channel = channel
        self._purge_list = CaseInsensibleDict()
        self._purge_time = 3600*2 # 2 hours

    def __setitem__(self, nick, user):
        #debug('%s %s: join, %s', self.server, self.channel, nick)
        if nick not in self:
            user._channels += 1
        if nick in self._purge_list:
            #debug(' - removed from purge list')
            del self._purge_list[nick]
        ServerUserList.__setitem__(self, nick, user)

    def part(self, nick):
        try:
            #debug('%s %s: part, %s', self.server, self.channel, nick)
            user = self[nick]
            self._purge_list[nick] = user
        except KeyError:
            pass

    def values(self):
        if not all(ServerUserList.values(self)):
            userCache.who(self.server, self.channel)
        return sorted(ServerUserList.values(self), key=lambda x:x.seen, reverse=True)

    def hostmasks(self, sorted=False, all=False):
        if sorted:
            users = self.values()
        else:
            users = ServerUserList.values(self)
        if all:
            # return all known hostmasks
            return [ hostmask for user in users for hostmask in user._hostmask ]
        else:
            # only current hostmasks
            return [ user.hostmask for user in users if user._hostmask ]

    def nicks(self, *args, **kwargs):
#        if not all(self.itervalues()):
#            userCache.who(self.server, self.channel)
        L = list(self.items())
        L.sort(key=lambda x:x[1].seen)
        return reversed([x[0] for x in L])

    def getHostmask(self, nick):
        try:
            user = self[nick]
        except KeyError:
            user = userCache[self.server][nick]
        return user.hostmask

    def purge(self):
        """Purge old nicks"""
        n = now()
        for nick, user in self._purge_list.items():
            if (n - user.seen) > self._purge_time:
                #debug('%s %s: forgeting about %s', self.server, self.channel, nick)
                user._channels -= 1
                try:
                    del self._purge_list[nick]
                    del self[nick]
                except KeyError:
                    pass

class UserCache(ServerChannelDict):
    __name__ = ''
    servercache = CaseInsensibleDict()
    _hook_who = _hook_who_end = None
    _channels = CaseInsensibleSet()

    def generateCache(self, server, channel):
        debug('* building cache: %s %s', server, channel)
        users = UserList(server, channel)
        try:
            infolist = nick_infolist(server, channel)
        except:
            # better to fail silently
            #debug('invalid buffer')
            return users

        while infolist.next():
            nick = infolist['name']
            host = infolist['host']
            if host:
                hostmask = '%s!%s' %(nick, host)
            else:
                hostmask = ''
            user = self.remember(server, nick, hostmask)
            users[nick] = user
        self[server, channel] = users
        debug("new cache of %s users", len(users))
        return users

    def remember(self, server, nick, hostmask):
        cache = self[server]
        try:
            user = cache[nick]
            if hostmask:
                user.update(hostmask)
        except KeyError:
            #debug("%s: new user %s %s", server, nick, hostmask)
            user = UserObject(nick, hostmask)
            cache[nick] = user
        return user

    def __getitem__(self, k):
        if isinstance(k, tuple):
            try:
                return ServerChannelDict.__getitem__(self, k)
            except KeyError:
                return self.generateCache(*k)
        elif isinstance(k, str):
            try:
                return self.servercache[k]
            except KeyError:
                cache = self.servercache[k] = ServerUserList(k)
                return cache

    def __delitem__(self, k):
        # when we delete a channel, we need to reduce user._channels count
        # so they can be purged later.
        #debug('forgeting about %s', k)
        for user in self[k].values():
            user._channels -= 1
        ServerChannelDict.__delitem__(self, k)

    def getHostmask(self, nick, server, channel=None):
        """Returns hostmask of nick."""
        if channel:
            return self[server, channel].getHostmask(nick)
        return self[server].getHostmask(nick)

    def who(self, server, channel):
        if self._hook_who:
            return

        if (server, channel) in self._channels:
            return

        self._channels.add((server, channel))

        key = ('%s.%s' %(server, channel)).lower()
        self._hook_who = weechat.hook_modifier(
                'irc_in_352', callback(self._whoCallback), key)
        self._hook_who_end = weechat.hook_modifier(
                'irc_in_315', callback(self._endWhoCallback), key)

        buffer = weechat.buffer_search('irc', 'server.%s' %server)
        weechat_command(buffer, '/who %s' % channel)

    def _whoCallback(self, data, modifier, modifier_data, string):
        #debug('%s %s %s', modifier, modifier_data, string)
        args = string.split()
        server, channel = modifier_data, args[3]
        key = ('%s.%s' %(server, channel)).lower()
        if key != data:
            return string

        nick, user, host = args[7], args[4], args[5]
        hostmask = '%s!%s@%s' %(nick, user, host)
        debug('WHO: %s', hostmask)
        self.remember(server, nick, hostmask)
        return ''

    def _endWhoCallback(self, data, modifier, modifier_data, string):
        args = string.split()
        server, channel = modifier_data, args[3]
        key = ('%s.%s' %(server, channel)).lower()
        if key != data:
            return string

        debug('WHO: end.')
        weechat.unhook(self._hook_who)
        weechat.unhook(self._hook_who_end)
        self._hook_who = self._hook_who_end = None
        return ''

    def purge(self):
        ServerChannelDict.purge(self)
        for cache in self.servercache.values():
            cache.purge()

userCache = UserCache()

# -----------------------------------------------------------------------------
# Chanop Command Classes

# Base classes for chanop commands
class CommandChanop(Command, ChanopBuffers):
    """Base class for our commands, with config and general functions."""
    infolist = None

    def parser(self, args):
        if not args:
            weechat_command('', '/help %s' % self.command)
            raise NoArguments
        self.setup(self.buffer)

    def execute(self):
        self.users = userCache[self.server, self.channel]
        try:
            self.execute_chanop()   # call our command and queue messages for WeeChat
            self.irc.run()          # run queued messages
        except InvalidIRCBuffer as e:
            error('Not in a IRC channel (%s)' % e)
            self.irc.clear()
        self.infolist = None    # free irc_nick infolist

    def execute_chanop(self):
        pass

    def nick_infolist(self):
        # reuse the same infolist instead of creating it many times
        if not self.infolist:
            self.infolist = nick_infolist(self.server, self.channel)
        else:
            self.infolist.reset()
        return self.infolist

    def has_op(self, nick):
        nicks = self.nick_infolist()
        while nicks.next():
            if nicks['name'] == nick:
                return '@' in nicks['prefixes']

    def has_voice(self, nick):
        nicks = self.nick_infolist()
        while nicks.next():
            if nicks['name'] == nick:
                return '+' in nicks['prefixes']

    def isUser(self, nick):
        return nick in self.users

    def inChannel(self, nick):
        return CaseInsensibleString(nick) in [ nick['name'] for nick in self.nick_infolist() ]

    def getHostmask(self, name):
        try:
            hostmask = self.users.getHostmask(name)
            if not hostmask:
                self.irc.Userhost(name)
                user = userCache[self.server][name]
                return lambda: user.hostmask or user.nick
            return hostmask
        except KeyError:
            pass

    def set_mode(self, *nicks):
        mode = self.prefix + self.mode
        for nick in nicks:
            self.irc.Mode(mode, nick)

class CommandWithOp(CommandChanop):
    """Base class for all the commands that requires op status for work."""
    _enable_deopNow = True
    deop_delay = 0

    def __init__(self, *args, **kwargs):
        CommandChanop.__init__(self, *args, **kwargs)
        # update help so it adds --deop option
        if self._enable_deopNow:
            if self.usage:
                self.usage += " "
            if self.help:
                self.help += "\n"
            self.usage += "[--deop]"
            self.help += " -o --deop: Forces deop immediately, without configured delay"\
                         " (option must be the last argument)."

    def setup(self, buffer):
        self.deopNow = False
        CommandChanop.setup(self, buffer)

    def parser(self, args):
        CommandChanop.parser(self, args)
        args = args.split()
        if self._enable_deopNow and args[-1] in ('-o', '--deop'):
            self.deopNow = True
            del args[-1]
            self.args = ' '.join(args)
        if not self.args:
            raise NoArguments

    def execute_chanop(self, *args):
        self.execute_op(*args)

        if not self.irc.commands:
            # nothing in queue, no reason to op.
            return

        self.irc.Op()
        if (self.autodeop and self.get_config_boolean('autodeop')) or self.deopNow:
            if self.deopNow:
                delay = self.deop_delay
            else:
                delay = self.get_config_int('autodeop_delay')
            if delay > 0:
                if self.deopHook:
                    weechat.unhook(self.deopHook)
                self.vars.deopHook = weechat.hook_timer(delay * 1000, 0, 1,
                        callback(self.deopCallback), self.buffer)
            elif self.irc.commands: # only Deop if there are msgs in queue
                self.irc.Deop()

    def execute_op(self, *args):
        """Commands in this method will be run with op privileges."""
        pass

    def deopCallback(self, buffer, count):
        #debug('deop %s', buffer)
        vars = self.varsOf(buffer)
        if vars.autodeop:
            if vars.irc.commands:
                # there are commands in queue yet, wait some more
                vars.deopHook = weechat.hook_timer(1000, 0, 1,
                        callback(self.deopCallback), buffer)
                return WEECHAT_RC_OK
            else:
                vars.irc.Deop()
                vars.irc.run()
        vars.deopHook = None
        return WEECHAT_RC_OK

# Chanop commands
class Op(CommandChanop):
    description, usage = "Request operator privileges or give it to users.", "[nick [nick ... ]]",
    help = \
    "The command used for ask op is defined globally in plugins.var.python.%(name)s.op_command\n"\
    "It can be defined per server or per channel in:\n"\
    " plugins.var.python.%(name)s.op_command.<server>\n"\
    " plugins.var.python.%(name)s.op_command.<server>.<#channel>\n"\
    "\n"\
    "After using this command, you won't be autodeoped." %{'name':SCRIPT_NAME}
    command = 'oop'
    completion = '%(nicks)'

    prefix = '+'
    mode = 'o'

    def parser(self, args):
        # dont show /help if no args
        self.setup(self.buffer)

    def execute_chanop(self):
        self.irc.Op()
        # /oop was used, we assume that the user wants
        # to stay opped permanently
        self.vars.autodeop = False
        if self.args:
            for nick in self.args.split():
                if self.inChannel(nick) and not self.has_op(nick):
                    self.set_mode(nick)

class Deop(Op, CommandWithOp):
    description, usage, help = \
    "Removes operator privileges from yourself or users.", "[nick [nick ... ]]", ""
    command = 'odeop'
    completion = '%(nicks)'

    prefix = '-'
    _enable_deopNow = False

    def execute_chanop(self):
        if self.args:
            nicks = []
            for nick in self.args.split():
                if self.inChannel(nick) and self.has_op(nick):
                    nicks.append(nick)
            if nicks:
                CommandWithOp.execute_chanop(self, nicks)
        else:
            self.vars.autodeop = True
            if self.has_op(self.nick):
                self.irc.Deop()

    def execute_op(self, nicks):
        self.set_mode(*nicks)

class Kick(CommandWithOp):
    description, usage = "Kick nick.", "<nick> [<reason>]"
    help = \
    "On freenode, you can set this command to use /remove instead of /kick, users"\
    " will see it as if the user parted and it can bypass autojoin-on-kick scripts."\
    " See plugins.var.python.%s.enable_remove config option." %SCRIPT_NAME
    command = 'okick'
    completion = '%(nicks)'

    def execute_op(self):
        nick, s, reason = self.args.partition(' ')
        if self.inChannel(nick):
            self.irc.Kick(nick, reason)
        else:
            say("Nick not in %s (%s)" % (self.channel, nick), self.buffer)
            self.irc.clear()

class MultiKick(Kick):
    description = "Kick one or more nicks."
    usage = "<nick> [<nick> ... ] [:] [<reason>]"
    help = Kick.help + "\n\n"\
    "Note: Is not needed, but use ':' as a separator between nicks and "\
    "the reason. Otherwise, if there's a nick in the channel matching the "\
    "first word in reason it will be kicked."
    completion = '%(nicks)|%*'

    def execute_op(self):
        args = self.args.split()
        nicks = []
        nicks_parted = []
        #debug('multikick: %s' %str(args))
        while(args):
            nick = args[0]
            if nick[0] == ':' or not self.isUser(nick):
                break
            nick = args.pop(0)
            if self.inChannel(nick):
                nicks.append(nick)
            else:
                nicks_parted.append(nick)

        #debug('multikick: %s, %s' %(nicks, args))
        reason = ' '.join(args).lstrip(':')
        if nicks_parted:
            say("Nick(s) not in %s (%s)" % (self.channel, ', '.join(nicks_parted)), self.buffer)
        elif not nicks:
            say("Unknown nick (%s)" % nick, self.buffer)
        if nicks:
            for nick in nicks:
                self.irc.Kick(nick, reason)
        else:
            self.irc.clear()

ban_help = \
"Mask options:\n"\
" -h  --host: Match hostname (*!*@host)\n"\
" -n  --nick: Match nick     (nick!*@*)\n"\
" -u  --user: Match username (*!user@*)\n"\
" -e --exact: Use exact hostmask.\n"\
"\n"\
"If no mask options are supplied, configured defaults are used.\n"\
"\n"\
"Completer:\n"\
"%(script)s will attempt to guess a complete banmask from current\n"\
"users when using <tab> in an incomplete banmask. Using <tab> in a\n"\
"complete banmask will generate variations of it. \n"\
"\n"\
"Examples:\n"\
" /%(cmd)s somebody --user --host\n"\
"   will ban with *!user@hostname mask.\n"\
" /%(cmd)s nick!*@<tab>\n"\
"   will autocomple with 'nick!*@host'.\n"\
" /%(cmd)s nick!*@*<tab>\n"\
"   will cycle through different banmask variations for the same user.\n"

class Ban(CommandWithOp):
    description = "Ban user or hostmask."
    usage = \
    "<nick|mask> [<nick|mask> ... ] [ [--host] [--user] [--nick] | --exact ]"
    command = 'oban'
    help = ban_help % {'script': SCRIPT_NAME, 'cmd': command}
    completion = '%(chanop_nicks)|%(chanop_ban_mask)|%*'

    banmask = []
    mode = 'b'
    prefix = '+'

    def __init__(self):
        self.maskCache = modeCache[self.mode]
        CommandWithOp.__init__(self)

    def parser(self, args):
        if not args:
            showBans.callback(self.data, self.buffer, self.mode)
            raise NoArguments
        CommandWithOp.parser(self, args)
        self._parser(self.args)

    def _parser(self, args):
        args = args.split()
        try:
            (opts, args) = getopt.gnu_getopt(args, 'hune', ('host', 'user', 'nick', 'exact'))
        except getopt.GetoptError as e:
            raise ArgumentError(e)
        self.banmask = []
        for k, v in opts:
            if k in ('-h', '--host'):
                self.banmask.append('host')
            elif k in ('-u', '--user'):
                self.banmask.append('user')
            elif k in ('-n', '--nick'):
                self.banmask.append('nick')
            elif k in ('-e', '--exact'):
                self.banmask = ['exact']
                break
        if not self.banmask:
            self.banmask = self.get_default_banmask()
        self.args = ' '.join(args)

    def get_default_banmask(self):
        return get_config_banmask(get_function=self.get_config)

    def make_banmask(self, hostmask):
        assert self.banmask
        template = self.banmask

        def banmask(s):
            if not is_hostmask(s):
                return s
            if 'exact' in template:
                return s
            nick = user = host = '*'
            if 'nick' in template:
                nick = get_nick(s)
            if 'user' in template:
                user = get_user(s)
            if 'host' in template:
                host = get_host(s)
                # check for freenode's webchat, and use a better mask.
                if host.startswith('gateway/web/freenode'):
                    ip = host.partition('.')[2]
                    if is_ip(ip):
                        host = '*%s' % ip
            s = '%s!%s@%s' %(nick, user, host)
            assert is_hostmask(s), "Invalid hostmask: %s" % s
            return s

        if callable(hostmask):
            return lambda: banmask(hostmask())
        return banmask(hostmask)

    def execute_op(self):
        args = self.args.split()
        banmasks = []
        for arg in args:
            if is_nick(arg):
                hostmask = self.getHostmask(arg)
                if not hostmask:
                    say("Unknown nick (%s)" % arg, self.buffer)
                    continue
                mask = self.make_banmask(hostmask)
                if self.has_voice(arg):
                    self.irc.Devoice(arg)
            else:
                # probably an extban
                mask = arg
            banmasks.append(mask)
        banmasks = set(banmasks) # remove duplicates
        self.ban(*banmasks)

    def mode_is_supported(self):
        return self.mode in supported_modes(self.server)

    def ban(self, *banmasks, **kwargs):
        if self.mode != 'b' and not self.mode_is_supported():
            error("%s doesn't seem to support channel mode '%s', using regular ban." %(self.server,
                self.mode))
            mode = 'b'
        else:
            mode = self.mode
        mode = self.prefix + mode
        for mask in banmasks:
            self.irc.Mode(mode, mask, **kwargs)

class UnBan(Ban):
    description, usage = "Remove bans.", "<nick|mask> [<nick|mask> ... ]"
    command = 'ounban'
    help = \
    "Autocompletion will use channel's bans, patterns allowed for autocomplete multiple"\
    " bans.\n"\
    "\n"\
    "Example:\n"\
    "/%(cmd)s *192.168*<tab>\n"\
    "  Will autocomplete with all bans matching *192.168*" %{'cmd':command}
    completion = '%(chanop_unban_mask)|%(chanop_nicks)|%*'
    prefix = '-'

    def search_masks(self, hostmask, **kwargs):
        try:
            masklist = self.maskCache[self.server, self.channel]
        except KeyError:
            return []

        if callable(hostmask):
            def banmask():
                L = masklist.search(hostmask(), **kwargs)
                if L: return L[0]

            return [ banmask ]
        return masklist.search(hostmask, **kwargs)

    def execute_op(self):
        args = self.args.split()
        banmasks = []
        for arg in args:
            if is_hostmask(arg):
                banmasks.extend(self.search_masks(arg))
            elif is_nick(arg):
                hostmask = self.getHostmask(arg)
                if hostmask:
                    banmasks.extend(self.search_masks(hostmask, reverseMatch=True))
                else:
                    # nick unknown to chanop
                    say("Unknown nick (%s)" % arg, self.buffer)
            else:
                banmasks.append(arg)
        self.ban(*banmasks)

class Quiet(Ban):
    description = "Silence user or hostmask."
    command = 'oquiet'
    help = "This command is only for networks that support channel mode 'q'.\n\n" \
            + ban_help % {'script': SCRIPT_NAME, 'cmd': command}
    completion = '%(chanop_nicks)|%(chanop_ban_mask)|%*'

    mode = 'q'

class UnQuiet(UnBan):
    command = 'ounquiet'
    description = "Remove quiets."
    help = "Works exactly like /ounban, but only for quiets. See /help ounban"
    completion = '%(chanop_unquiet_mask)|%(chanop_nicks)|%*'

    mode = 'q'

class BanKick(Ban, Kick):
    description = "Bankicks nick."
    usage = "<nick> [<reason>] [ [--host] [--user] [--nick] | --exact ]"
    help = "Combines /oban and /okick commands. See /help oban and /help okick."
    command = 'obankick'
    completion = '%(chanop_nicks)'
    deop_delay = 2

    def execute_op(self):
        nick, s, reason = self.args.partition(' ')
        if not self.isUser(nick):
            say("Unknown nick (%s)" % nick, self.buffer)
            self.irc.clear()
            return

        hostmask = self.getHostmask(nick)
        # we already checked that nick is valid, so hostmask shouldn't be None
        banmask = self.make_banmask(hostmask)
        self.ban(banmask)
        if self.inChannel(nick):
            self.irc.Kick(nick, reason, wait=1)

class MultiBanKick(BanKick):
    description = "Bankicks one or more nicks."
    usage = \
    "<nick> [<nick> ... ] [:] [<reason>] [ [--host)] [--user] [--nick] | --exact ]"
    completion = '%(chanop_nicks)|%*'

    def execute_op(self):
        args = self.args.split()
        nicks = []
        while(args):
            nick = args[0]
            if nick[0] == ':' or not self.isUser(nick):
                break
            nicks.append(args.pop(0))
        reason = ' '.join(args).lstrip(':')
        if not nicks:
            say("Unknown nick (%s)" % nick, self.buffer)
            self.irc.clear()
            return

        for nick in nicks:
            hostmask = self.getHostmask(nick)
            banmask = self.make_banmask(hostmask)
            self.ban(banmask)

        self.deop_delay = 1
        for nick in nicks:
            if self.inChannel(nick):
                self.deop_delay += 1
                self.irc.Kick(nick, reason, wait=1)

class Topic(CommandWithOp):
    description, usage = "Changes channel topic.", "[-delete | topic]"
    help = "Clear topic if '-delete' is the new topic."
    command = 'otopic'
    completion = '%(irc_channel_topic)||-delete'

    def execute_op(self):
        self.irc.queue(Message('/topic %s' %self.args))

class Voice(CommandWithOp):
    description, usage, help = "Gives voice to somebody.", "nick [nick ... ]", ""
    command = 'ovoice'
    completion = '%(nicks)|%*'

    prefix = '+'
    mode = 'v'

    def execute_op(self):
        for nick in self.args.split():
            if self.inChannel(nick) and not self.has_voice(nick):
                self.set_mode(nick)

class DeVoice(Voice):
    description = "Removes voice from somebody."
    command = 'odevoice'

    prefix = '-'

    def has_voice(self, nick):
        return not Voice.has_voice(self, nick)

class Mode(CommandWithOp):
    description, usage, help = "Changes channel modes.", "<channel modes>", ""
    command = 'omode'

    def execute_op(self):
        args = self.args.split()
        modes = args.pop(0)
        L = []
        p = ''
        for c in modes:
            if c in '+-':
                p = c
            elif args:
                L.append((p + c, args.pop(0)))
            else:
                L.append((p + c, None))
        if not L:
            return

        for mode, arg in L:
            self.irc.Mode(mode, arg)

class ShowBans(CommandChanop):
    description, usage, help = "Lists bans or quiets of a channel.", "(bans|quiets) [channel]", ""
    command = 'olist'
    completion = 'bans|quiets %(irc_server_channels)'
    showbuffer = ''

    padding = 40

    def parser(self, args):
        server = weechat.buffer_get_string(self.buffer, 'localvar_server')
        channel = weechat.buffer_get_string(self.buffer, 'localvar_channel')
        if server:
            self.server = server
        if channel:
            self.channel = channel
        type, _, args = args.partition(' ')
        if not type:
            raise ValueError('missing argument')
        try:
            mode = modeCache.map[type]
        except KeyError:
            raise ValueError('incorrect argument')

        self.mode = mode
        # fix self.type so is "readable" (ie, 'bans' instead of 'b')
        if mode == 'b':
            self.type = 'bans'
        elif mode == 'q':
            self.type = 'quiets'
        args = args.strip()
        if args:
            self.channel = args

    def get_buffer(self):
        if self.showbuffer:
            return self.showbuffer

        buffer = weechat.buffer_search('python', SCRIPT_NAME)
        if not buffer:
            buffer = weechat.buffer_new(SCRIPT_NAME, '', '', '', '')
            weechat.buffer_set(buffer, 'localvar_set_no_log', '1')
            weechat.buffer_set(buffer, 'time_for_each_line', '0')
        self.showbuffer = buffer
        return buffer

    def prnt(self, s):
        weechat.prnt(self.get_buffer(), s)

    def prnt_ban(self, banmask, op, when, hostmask=None):
        padding = self.padding - len(banmask)
        if padding < 0:
            padding = 0
        self.prnt('%s%s%s %sset by %s%s%s %s' %(color_mask,
                                                banmask,
                                                color_reset,
                                                '.'*padding,
                                                color_chat_nick,
                                                op,
                                                color_reset,
                                                self.formatTime(when)))
        if hostmask:
            hostmasks = ' '.join(hostmask)
            self.prnt('  %s%s' % (color_chat_host, hostmasks))

    def clear(self):
        b = self.get_buffer()
        weechat.buffer_clear(b)
        weechat.buffer_set(b, 'display', '1')
        weechat.buffer_set(b, 'title', '%s' %SCRIPT_NAME)

    def set_title(self, s):
        weechat.buffer_set(self.get_buffer(), 'title', s)

    def formatTime(self, t):
        t = now() - int(t)
        elapsed = time_elapsed(t, level=3)
        return '%s ago' %elapsed

    def execute(self):
        self.showbuffer = ''
        if self.mode not in supported_modes(self.server):
            self.clear()
            self.prnt("\n%sNetwork '%s' doesn't support %s" % (color_channel,
                                                               self.server,
                                                               self.type))
            return

        maskCache = modeCache[self.mode]
        key = (self.server, self.channel)
        try:
            masklist = maskCache[key]
        except KeyError:
            if not (weechat.info_get('irc_is_channel', key[1]) and self.server):
                error("Command /%s must be used in an IRC buffer." % self.command)
                return

            masklist = None
        self.clear()
        mask_count = 0
        if masklist:
            mask_count = len(masklist)
            self.prnt('\n%s[%s %s]' %(color_channel, key[0], key[1]))
            masks = [ m for m in masklist.values() ]
            masks.sort(key=lambda x: x.date)
            for ban in masks:
                op = self.server
                if ban.operator:
                    try:
                        op = get_nick(ban.operator)
                    except:
                        pass
                self.prnt_ban(ban.mask, op, ban.date, ban.hostmask)
        else:
            self.prnt('No known %s for %s.%s' %(self.type, key[0], key[1]))
        if masklist is None or not masklist.synced:
            self.prnt("\n%sList not synced, please wait ..." %color_channel)
            maskSync.fetch(key[0], key[1], self.mode, lambda: self.execute())
        self.set_title('List of %s known by chanop in %s.%s (total: %s)' %(self.type,
                                                                           key[0],
                                                                           key[1],
                                                                           mask_count))

# -----------------------------------------------------------------------------
# Script callbacks

# Decorators
def signal_parse(f):
    @catchExceptions
    def decorator(data, signal, signal_data):
        server = signal[:signal.find(',')]
        channel = signal_data.split()[2]
        if channel[0] == ':':
            channel = channel[1:]
        if (server, channel) not in chanopChannels:
            # signals only processed for channels in watchlist
            return WEECHAT_RC_OK
        nick = get_nick(signal_data)
        hostmask = signal_data[1:signal_data.find(' ')]
        #debug('%s %s', signal, signal_data)
        return f(server, channel, nick, hostmask, signal_data)
    decorator.func_name = f.func_name
    return decorator

def signal_parse_no_channel(f):
    @catchExceptions
    def decorator(data, signal, signal_data):
        server = signal[:signal.find(',')]
        nick = get_nick(signal_data)
        channels = userCache.getChannels(server, nick)
        if channels:
            hostmask = signal_data[1:signal_data.find(' ')]
            #debug('%s %s', signal, signal_data)
            return f(server, channels, nick, hostmask, signal_data)
        return WEECHAT_RC_OK
    decorator.func_name = f.func_name
    return decorator

isupport = {}
def get_isupport_value(server, feature):
    #debug('isupport %s %s', server, feature)
    try:
        return isupport[server][feature]
    except KeyError:
        if not server:
            return ''
        elif server not in isupport:
            isupport[server] = {}
        v = weechat.info_get('irc_server_isupport_value', '%s,%s' %(server, feature.upper()))
        if v:
            isupport[server][feature] = v
        else:
            # old api
            v = weechat.config_get_plugin('isupport.%s.%s' %(server, feature))
            if not v:
                # lets do a /VERSION (it should be done only once.)
                if '/VERSION' in isupport[server]:
                    return ''
                buffer = weechat.buffer_search('irc', 'server.%s' %server)
                weechat_command(buffer, '/VERSION')
                isupport[server]['/VERSION'] = True
        return v

_supported_modes = set('bq') # the script only support b,q masks
def supported_modes(server):
    """Returns modes supported by server."""
    modes = get_isupport_value(server, 'chanmodes')
    if not modes:
        return 'b'
    modes = modes.partition(',')[0] # we only care about the first type
    modes = ''.join(_supported_modes.intersection(modes))
    return modes

def supported_maxmodes(server):
    """Returns max modes number supported by server."""
    max = get_isupport_value(server, 'modes')
    try:
        max = int(max)
        if max <= 0:
            max = 1
    except ValueError:
        return 1
    return max

def isupport_cb(data, signal, signal_data):
    """Callback used for catch isupport msg if current version of WeeChat doesn't
    support it."""
    data = signal_data.split(' ', 3)[-1]
    data, s, s = data.rpartition(' :')
    data = data.split()
    server = signal.partition(',')[0]
    d = {}
    #debug(data)
    for s in data:
        if '=' in s:
            k, v = s.split('=')
        else:
            k, v = s, True
        k = k.lower()
        if k in ('chanmodes', 'modes', 'prefix'):
            config = 'isupport.%s.%s' %(server, k)
            weechat.config_set_plugin(config, v)
            d[k] = v
    isupport[server] = d
    return WEECHAT_RC_OK

def print_affected_users(buffer, *hostmasks):
    """Print a list of users, max 8 hostmasks"""
    def format_user(hostmask):
        nick, host = hostmask.split('!', 1)
        return '%s%s%s(%s%s%s)' %(color_chat_nick,
                                  nick,
                                  color_delimiter,
                                  color_chat_host,
                                  host,
                                  color_delimiter)

    max = 8
    count = len(hostmasks)
    if count > max:
        hostmasks = hostmasks[:max]
    say('Affects (%s): %s%s' %(count, ' '.join(map(format_user,
        hostmasks)), count > max and ' %s...' %color_reset or ''), buffer=buffer)

# Masks list tracking
@signal_parse
def mode_cb(server, channel, nick, opHostmask, signal_data):
    """Keep the banmask list updated when somebody changes modes"""
    #:m4v!~znc@unaffiliated/m4v MODE #test -bo+v asd!*@* m4v dude
    pair = signal_data.split(' ', 4)[3:]
    if len(pair) != 2:
        # modes without argument, not interesting.
        return WEECHAT_RC_OK
    modes, args = pair

    # check if there are interesting modes
    servermodes = supported_modes(server)
    s = modes.translate(chars, '+-') # remove + and -
    if not set(servermodes).intersection(s):
        return WEECHAT_RC_OK

    # check if channel is in watchlist
    key = (server, channel)
    allkeys = CaseInsensibleSet()
    for maskCache in modeCache.values():
        allkeys.update(maskCache)
        if key not in allkeys and key not in chanopChannels:
            # from a channel we're not tracking
            return WEECHAT_RC_OK

    prefix = get_isupport_value(server, 'prefix')
    chanmodes = get_isupport_value(server, 'chanmodes')
    if not prefix or not chanmodes:
        # we don't have ISUPPORT data, can't continue
        return WEECHAT_RC_OK

    # split chanmodes into tuples like ('+', 'b', 'asd!*@*')
    action = ''
    chanmode_list = []
    args = args.split()

    # user channel mode, such as +v or +o, get only the letters and not the prefixes
    usermodes = ''.join(map(lambda c: c.isalpha() and c or '', prefix))
    chanmodes = chanmodes.split(',')
    # modes not supported by script, like +e +I
    notsupported = chanmodes[0].translate(chars, servermodes)
    modes_with_args = chanmodes[1] + usermodes + notsupported
    modes_with_args_when_set = chanmodes[2]
    for c in modes:
        if c in '+-':
            action = c
        elif c in servermodes:
            chanmode_list.append((action, c, args.pop(0)))
        elif c in modes_with_args:
            del args[0]
        elif c in modes_with_args_when_set and action == '+':
            del args[0]

    affected_users = []
    # update masks
    for action, mode, mask in chanmode_list:
        debug('MODE: %s%s %s %s', action, mode, mask, opHostmask)
        if action == '+':
            hostmask = hostmask_match_list(mask, userCache[key].hostmasks())
            if hostmask:
                affected_users.extend(hostmask)
            if mask != '*!*@*':
                # sending this signal with a *!*@* is annoying
                weechat.hook_signal_send("%s,chanop_mode_%s" % (server, mode),
                                         weechat.WEECHAT_HOOK_SIGNAL_STRING,
                                         "%s %s %s %s" % (opHostmask, channel,
                                                          mask, ','.join(hostmask)))
            modeCache.add(server, channel, mode, mask, operator=opHostmask, hostmask=hostmask)
        elif action == '-':
            modeCache.remove(server, channel, mode, mask)

    if affected_users and get_config_boolean('display_affected',
            get_function=get_config_specific, server=server, channel=channel):
        buffer = weechat.buffer_search('irc', '%s.%s' %key)
        print_affected_users(buffer, *set(affected_users))
    return WEECHAT_RC_OK

# User cache
@signal_parse
def join_cb(server, channel, nick, hostmask, signal_data):
    if weechat.info_get('irc_nick', server) == nick:
        # we're joining the channel, the cache is no longer valid
        #userCache.generateCache(server, channel)
        try:
            del userCache[server, channel]
        except KeyError:
            pass
        return WEECHAT_RC_OK
    user = userCache.remember(server, nick, hostmask)
    userCache[server, channel][nick] = user
    return WEECHAT_RC_OK

@signal_parse
def part_cb(server, channel, nick, hostmask, signal_data):
    userCache.remember(server, nick, hostmask)
    userCache[server, channel].part(nick)
    return WEECHAT_RC_OK

@signal_parse_no_channel
def quit_cb(server, channels, nick, hostmask, signal_data):
    userCache.remember(server, nick, hostmask)
    for channel in channels:
        userCache[server, channel].part(nick)
    return WEECHAT_RC_OK

@signal_parse_no_channel
def nick_cb(server, channels, oldNick, oldHostmask, signal_data):
    newNick = signal_data[signal_data.rfind(' ') + 2:]
    newHostmask = '%s!%s' % (newNick, oldHostmask[oldHostmask.find('!') + 1:])
    userCache.remember(server, oldNick, oldHostmask)
    user = userCache.remember(server, newNick, newHostmask)
    for channel in channels:
        userCache[server, channel].part(oldNick)
        userCache[server, channel][newNick] = user
    return WEECHAT_RC_OK

# Garbage collector
def garbage_collector_cb(data, counter):
    """This takes care of purging users and masks from channels not in watchlist, and
    expired users that parted.
    """
    debug('* flushing caches')
    modeCache.purge()
    userCache.purge()

    if weechat.config_get_plugin('debug'):
        # extra check that everything is right.
        for serv, chan in userCache:
            for nick in [ nick['name'] for nick in nick_infolist(serv, chan) ]:
                if nick not in userCache[serv, chan]:
                    error('User cache out of sync, unknown nick. (%s - %s.%s)' % (nick, serv, chan))

    return WEECHAT_RC_OK

# -----------------------------------------------------------------------------
# Config callbacks

def enable_multi_kick_conf_cb(data, config, value):
    global cmd_kick, cmd_bankick
    cmd_kick.unhook()
    cmd_bankick.unhook()
    if boolDict[value]:
        cmd_kick = MultiKick()
        cmd_bankick = MultiBanKick()
    else:
        cmd_kick = Kick()
        cmd_bankick = BanKick()
    cmd_kick.hook()
    cmd_bankick.hook()
    return WEECHAT_RC_OK

def update_chanop_watchlist_cb(data, config, value):
    #debug('CONFIG: %s' %(' '.join((data, config, value))))
    server = config[config.rfind('.')+1:]
    if value:
        L = value.split(',')
    else:
        L = []
    for serv, chan in list(chanopChannels):
        if serv == server:
            chanopChannels.remove((serv, chan))
    chanopChannels.update([ (server, channel) for channel in L ])
    return WEECHAT_RC_OK

def enable_bar_cb(data, config, value):
    if boolDict[value]:
        chanop_bar.new()
        weechat.bar_item_new('chanop_ban_matches', 'item_ban_matches_cb', '')
        weechat.bar_item_new('chanop_status', 'item_status_cb', '')
        weechat.hook_modifier('input_text_content', 'input_content_cb', '')
    else:
        chanop_bar.remove()
    return WEECHAT_RC_OK

def enable_debug_cb(data, config, value):
    global debug
    if value and boolDict[value]:
        try:
            # custom debug module I use, allows me to inspect script's objects.
            import pybuffer
            debug = pybuffer.debugBuffer(globals(), '%s_debug' % SCRIPT_NAME)
            weechat.buffer_set(debug._getBuffer(), 'localvar_set_no_log', '0')
        except:
            def debug(s, *args):
                if not isinstance(s, str):
                    s = str(s)
                if args:
                    s = s % args
                prnt('', '%s\t%s' % (script_nick, s))
    else:
        try:
            if hasattr(debug, 'close'):
                debug.close()
        except NameError:
            pass

        debug = _no_debug

    return WEECHAT_RC_OK

# -----------------------------------------------------------------------------
# Completers

def cmpl_get_irc_users(f):
    """Check if completion is done in a irc channel, and pass the buffer's user list."""
    @catchExceptions
    def decorator(data, completion_item, buffer, completion):
        key = irc_buffer(buffer)
        if not key:
            return WEECHAT_RC_OK
        users = userCache[key]
        return f(users, data, completion_item, buffer, completion)
    return decorator

def unban_mask_cmpl(mode, completion_item, buffer, completion):
    """Completion for applied banmasks, for commands like /ounban /ounquiet"""
    maskCache = modeCache[mode]
    key = irc_buffer(buffer)
    if not key:
        return WEECHAT_RC_OK
    server, channel = key

    def cmpl_unban(masklist):
        input = weechat.buffer_get_string(buffer, 'input')
        if input[-1] != ' ':
            input, _, pattern = input.rpartition(' ')
        else:
            pattern = ''
        #debug('%s %s', repr(input), repr(pattern))
        if pattern and not is_nick(pattern): # FIXME nick completer interferes.
                                             # NOTE masklist no longer accepts nicks.
            L = masklist.search(pattern)
            #debug('unban pattern %s => %s', pattern, L)
            if L:
                input = '%s %s ' % (input, ' '.join(L))
                weechat.buffer_set(buffer, 'input', input)
                weechat.buffer_set(buffer, 'input_pos', str(len(input)))
                return
        elif not masklist:
            return
        for mask in masklist.keys():
            #debug('unban mask: %s', mask)
            weechat.hook_completion_list_add(completion, mask, 0, weechat.WEECHAT_LIST_POS_END)

    if key not in maskCache or not maskCache[key].synced:
        # do completion after fetching marks
        if not maskSync.queue:
            def callback():
                masklist = maskCache[key]
                if chanop_bar:
                    global chanop_bar_status
                    if masklist:
                        chanop_bar_status = 'Got %s +%s masks.' % (len(masklist), mode)
                    else:
                        chanop_bar_status = 'No +%s masks found.' % mode
                    chanop_bar.popup()
                    weechat.bar_item_update('chanop_status')
                else:
                    if masklist:
                        say('Got %s +%s masks.' % (len(masklist), mode), buffer)
                    else:
                       say('No +%s masks found.' % mode, buffer)
                cmpl_unban(masklist)

            maskSync.fetch(server, channel, mode, callback)
            if chanop_bar:
                global chanop_bar_status
                chanop_bar_status = 'Fetching +%s masks in %s, please wait...' %(mode, channel)
                weechat.bar_item_update('chanop_status')
                chanop_bar.popup()
            else:
                say('Fetching +%s masks in %s, please wait...' %(mode, channel), buffer)
    else:
        # mask list is up to date, do completion
        cmpl_unban(maskCache[key])
    return WEECHAT_RC_OK

banmask_cmpl_list = []
@cmpl_get_irc_users
def ban_mask_cmpl(users, data, completion_item, buffer, completion):
    """Completion for banmasks, for commands like /oban /oquiet"""
    input = weechat.buffer_get_string(buffer, 'input')
    if input[-1] == ' ':
        # no pattern, return
        return WEECHAT_RC_OK

    input, _, pattern = input.rpartition(' ')

    global banmask_cmpl_list
    if is_hostmask(pattern):
        if not banmask_cmpl_list:
            maskList = pattern_match_list(pattern, users.hostmasks(sorted=True, all=True))
            if maskList:
                banmask_cmpl_list = [ pattern ]

            def add(mask):
                if mask not in banmask_cmpl_list:
                    banmask_cmpl_list.append(mask)

            for mask in maskList:
                #debug('ban_mask_cmpl: Generating variations for %s', mask)
                host = get_host(mask)
                add('*!*@%s' % host)
                add('%s!*@%s' % (get_nick(mask), host))
                if host.startswith('gateway/web/freenode'):
                    ip = host.partition('.')[2]
                    if is_ip(ip):
                        add('*!*@*%s' % ip)
                elif is_ip(host):
                    user = get_user(mask)
                    iprange = host.rsplit('.', 2)[0]
                    add('*!%s@%s.*' % (user, iprange))
                    add('*!*@%s.*' % iprange)
            #debug('ban_mask_cmpl: variations: %s', banmask_cmpl_list)

        if pattern in banmask_cmpl_list:
            i = banmask_cmpl_list.index(pattern) + 1
            if i == len(banmask_cmpl_list):
                i = 0
            mask = banmask_cmpl_list[i]
            input = '%s %s' % (input, mask)
            weechat.buffer_set(buffer, 'input', input)
            weechat.buffer_set(buffer, 'input_pos', str(len(input)))
            return WEECHAT_RC_OK

    banmask_cmpl_list = []

    if pattern[-1] != '*':
        search_pattern = pattern + '*'
    else:
        search_pattern = pattern

    if '@' in pattern:
        # complete *!*@hostname
        prefix = pattern[:pattern.find('@')]
        make_mask = lambda mask: '%s@%s' %(prefix, mask[mask.find('@') + 1:])
        get_list = users.hostmasks
    elif '!' in pattern:
        # complete *!username@*
        prefix = pattern[:pattern.find('!')]
        make_mask = lambda mask: '%s!%s@*' %(prefix, mask[mask.find('!') + 1:mask.find('@')])
        get_list = users.hostmasks
    else:
        # complete nick!*@*
        make_mask = lambda mask: '%s!*@*' %mask
        get_list = users.nicks

    for mask in pattern_match_list(search_pattern, get_list(sorted=True, all=True)):
        mask = make_mask(mask)
        weechat.hook_completion_list_add(completion, mask, 0, weechat.WEECHAT_LIST_POS_END)
    return WEECHAT_RC_OK

# Completions for nick, user and host parts of a usermask
@cmpl_get_irc_users
def nicks_cmpl(users, data, completion_item, buffer, completion):
    for nick in users.nicks():
        weechat.hook_completion_list_add(completion, nick, 0, weechat.WEECHAT_LIST_POS_END)
    return WEECHAT_RC_OK

@cmpl_get_irc_users
def hosts_cmpl(users, data, completion_item, buffer, completion):
    for hostmask in users.hostmasks(sorted=True, all=True):
        weechat.hook_completion_list_add(completion, get_host(hostmask), 0,
                weechat.WEECHAT_LIST_POS_SORT)
    return WEECHAT_RC_OK

@cmpl_get_irc_users
def users_cmpl(users, data, completion_item, buffer, completion):
    for hostmask in users.hostmasks(sorted=True, all=True):
        user = get_user(hostmask)
        weechat.hook_completion_list_add(completion, user, 0, weechat.WEECHAT_LIST_POS_END)
    return WEECHAT_RC_OK

# info hooks
def info_hostmask_from_nick(data, info_name, arguments):
    #debug('INFO: %s %s', info_name, arguments)
    args = arguments.split(',')
    channel = None
    try:
        nick, server, channel = args
    except ValueError:
        try:
            nick, server = args
        except ValueError:
            return ''
    try:
        hostmask = userCache.getHostmask(nick, server, channel)
    except KeyError:
        return ''
    return hostmask

def info_pattern_match(data, info_name, arguments):
    #debug('INFO: %s %s', info_name, arguments)
    pattern, string = arguments.split(',')
    if pattern_match(pattern, string):
        return '1'
    return ''

# -----------------------------------------------------------------------------
# Chanop bar callbacks

chanop_bar_current_buffer = ''

@catchExceptions
def item_ban_matches_cb(data, item, window):
    #debug('ban matches item: %s %s', item, window)
    global chanop_bar_current_buffer
    buffer = chanop_bar_current_buffer
    if not buffer:
        return ''

    input = weechat.buffer_get_string(buffer, 'input')
    if not input:
        return ''

    command, _, content = input.partition(' ')

    if command[1:] not in ('oban', 'oquiet'):
        return ''

    def format(s):
        return '%s affects: %s' % (command, s)

    channel = weechat.buffer_get_string(buffer, 'localvar_channel')
    if not channel or not is_channel(channel):
        return format('(not an IRC channel)')

    server = weechat.buffer_get_string(buffer, 'localvar_server')
    users = userCache[server, channel]
    content = content.split()
    masks = [ mask for mask in content if is_hostmask(mask) or is_nick(mask) ]
    if not masks:
        return format('(no valid user mask or nick)')

    #debug('ban matches item: %s', masks)

    affected = []
    hostmasks = users.hostmasks(all=True)
    for mask in masks:
        if is_hostmask(mask):
            affected.extend(hostmask_match_list(mask, hostmasks))
        elif mask in users:
            affected.append(mask)
    #debug('ban matches item: %s', affected)

    if not affected:
        return format('(nobody)')

    L = set([ get_nick(h) for h in affected ])
    return format('(%s) %s' % (len(L), ' '.join(L)))

chanop_bar_status = ''
def item_status_cb(data, item, window):
    global chanop_bar_status
    if chanop_bar_status:
        return "%s[%s%s%s]%s %s" % (COLOR_BAR_DELIM,
                                    COLOR_BAR_FG,
                                    SCRIPT_NAME,
                                    COLOR_BAR_DELIM,
                                    color_reset,
                                    chanop_bar_status)
    else:
        return "%s[%s%s%s]" % (COLOR_BAR_DELIM,
                               COLOR_BAR_FG,
                               SCRIPT_NAME,
                               COLOR_BAR_DELIM)

@catchExceptions
def input_content_cb(data, modifier, modifier_data, string):
    #debug('input_content_cb: %s %s %r', modifier, modifier_data, string)
    global chanop_bar_current_buffer, chanop_bar_status
    if not chanop_bar:
        return string

    if string and not weechat.string_input_for_buffer(string):
        command, _, content = string.partition(' ')
        content = content.strip()
        if content and command[1:] in ('oban', 'oquiet'):
            chanop_bar.show()
            chanop_bar_current_buffer = modifier_data
            weechat.bar_item_update('chanop_ban_matches')
            if chanop_bar_status:
                chanop_bar_status = ''
                weechat.bar_item_update('chanop_bar_status')
            return string

    if not chanop_bar._timer_hook:
        chanop_bar.hide()
    return string

# -----------------------------------------------------------------------------
# Main

def unload_chanop():
    if chanop_bar:
        # we don't remove it, so custom options configs aren't lost
        chanop_bar.hide()
    bar_item = weechat.bar_item_search('chanop_ban_matches')
    if bar_item:
        weechat.bar_item_remove(bar_item)
    return WEECHAT_RC_OK

# Register script
if __name__ == '__main__' and import_ok and \
        weechat.register(SCRIPT_NAME, SCRIPT_AUTHOR, SCRIPT_VERSION, SCRIPT_LICENSE,
        SCRIPT_DESC, 'unload_chanop', ''):

    # colors
    color_delimiter = weechat.color('chat_delimiters')
    color_chat_nick = weechat.color('chat_nick')
    color_chat_host = weechat.color('chat_host')
    color_mask      = weechat.color('white')
    color_channel   = weechat.color('lightred')
    color_reset     = weechat.color('reset')
    COLOR_WHITE     = weechat.color('white')
    COLOR_DARKGRAY  = weechat.color('darkgray')
    COLOR_BAR_DELIM = weechat.color('bar_delim')
    COLOR_BAR_FG    = weechat.color('bar_fg')

    # pretty [chanop]
    script_nick = '%s[%s%s%s]%s' %(color_delimiter,
                                   color_chat_nick,
                                   SCRIPT_NAME,
                                   color_delimiter,
                                   color_reset)

    # -------------------------------------------------------------------------
    # Debug

    enable_debug_cb('', '', weechat.config_get_plugin('debug'))
    weechat.hook_config('plugins.var.python.%s.debug' % SCRIPT_NAME, 'enable_debug_cb', '')

    # -------------------------------------------------------------------------
    # Init

    # check weechat version
    try:
        version = int(weechat.info_get('version_number', ''))
    except:
        version = 0
    if version < WEECHAT_VERSION[0]:
        error("This version of WeeChat isn't supported. Use %s or later." % WEECHAT_VERSION[1])
        raise Exception('unsupported weechat version')
    if version < 0x30300: # prior to 0.3.3 didn't have support for ISUPPORT msg
        error('WeeChat < 0.3.3: using ISUPPORT workaround.')
        weechat.hook_signal('*,irc_in_005', 'isupport_cb', '')
    if version < 0x30400: # irc_nick flags changed in 0.3.4
        error('WeeChat < 0.3.4: using irc_nick infolist workaround.')
        Infolist._use_flags = True

    for opt, val in settings.items():
        if not weechat.config_is_set_plugin(opt):
            weechat.config_set_plugin(opt, val)

    modeCache = ModeCache('chanop_mode_cache.dat')
    modeCache.registerMode('b', 'ban', 'bans')
    modeCache.registerMode('q', 'quiet', 'quiets')

    # -------------------------------------------------------------------------
    # remove old chanmask config and save them in shelf

    prefix = 'python.%s.chanmask' % SCRIPT_NAME
    infolist = Infolist('option', 'plugins.var.%s.*' % prefix)
    n = len(prefix)
    while infolist.next():
        option = infolist['option_name'][n + 1:]
        server, channel, mode, mask = option.split('.', 3)
        if mode in modeCache:
            cache = modeCache[mode]
            if (server, channel) in cache:
                masklist = cache[server, channel]
            else:
                masklist = cache[server, channel] = MaskList(server, channel)
        if mask in masklist:
            masklist[mask].deserialize(infolist['value'])
        else:
            obj = masklist[mask] = MaskObject(mask)
            obj.deserialize(infolist['value'])
        weechat.config_unset_plugin('chanmask.%s.%s.%s.%s' \
                % (server, channel, mode, mask))
    del infolist

    # hook /oop /odeop
    Op().hook()
    Deop().hook()
    # hook /okick /obankick
    if get_config_boolean('enable_multi_kick'):
        cmd_kick = MultiKick()
        cmd_bankick = MultiBanKick()
    else:
        cmd_kick = Kick()
        cmd_bankick = BanKick()
    cmd_kick.hook()
    cmd_bankick.hook()
    # hook /oban /ounban /olist
    Ban().hook()
    UnBan().hook()
    showBans = ShowBans()
    showBans.hook()
    # hook /oquiet /ounquiet
    Quiet().hook()
    UnQuiet().hook()
    # hook /otopic /omode /ovoive /odevoice
    Topic().hook()
    Mode().hook()
    Voice().hook()
    DeVoice().hook()

    maskSync.hook()

    weechat.hook_config('plugins.var.python.%s.enable_multi_kick' % SCRIPT_NAME,
            'enable_multi_kick_conf_cb', '')
    weechat.hook_config('plugins.var.python.%s.watchlist.*' % SCRIPT_NAME,
            'update_chanop_watchlist_cb', '')
    weechat.hook_config('plugins.var.python.%s.enable_bar' % SCRIPT_NAME,
            'enable_bar_cb', '')

    weechat.hook_completion('chanop_unban_mask', 'channelmode b masks', 'unban_mask_cmpl', 'b')
    weechat.hook_completion('chanop_unquiet_mask', 'channelmode q masks', 'unban_mask_cmpl', 'q')
    weechat.hook_completion('chanop_ban_mask', 'completes partial mask', 'ban_mask_cmpl', '')
    weechat.hook_completion('chanop_nicks', 'nicks in cache', 'nicks_cmpl', '')
    weechat.hook_completion('chanop_users', 'usernames in cache', 'users_cmpl', '')
    weechat.hook_completion('chanop_hosts', 'hostnames in cache', 'hosts_cmpl', '')

    weechat.hook_signal('*,irc_in_join', 'join_cb', '')
    weechat.hook_signal('*,irc_in_part', 'part_cb', '')
    weechat.hook_signal('*,irc_in_quit', 'quit_cb', '')
    weechat.hook_signal('*,irc_in_nick', 'nick_cb', '')
    weechat.hook_signal('*,irc_in_mode', 'mode_cb', '')

    # run our cleaner function every 30 min.
    weechat.hook_timer(1000 * 60 * 30, 0, 0, 'garbage_collector_cb', '')

    chanop_bar = PopupBar('chanop_bar', hidden=True,
            items='chanop_status,chanop_ban_matches')
    if get_config_boolean('enable_bar'):
        chanop_bar.new()
        weechat.bar_item_new('chanop_ban_matches', 'item_ban_matches_cb', '')
        weechat.bar_item_new('chanop_status', 'item_status_cb', '')
        weechat.hook_modifier('input_text_content', 'input_content_cb', '')
    else:
        chanop_bar.remove()

    weechat.hook_info("chanop_hostmask_from_nick",
            "Returns nick's hostmask if is known. Returns '' otherwise.",
            "nick,server[,channel]", "info_hostmask_from_nick", "")
    weechat.hook_info("chanop_pattern_match",
            "Test if pattern matches text, is case insensible with IRC case rules.",
            "pattern,text", "info_pattern_match", "")


# vim:set shiftwidth=4 tabstop=4 softtabstop=4 expandtab textwidth=100: