summaryrefslogtreecommitdiffstats
path: root/docs/rel_notes.txt
blob: 47317d0a33f92db3fea1109e5a0f45b4c6578be1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
Release Notes for Bugzilla version 3.0 and higher are available in HTML
format, either on the bugzilla.org website, or in your current installation,
linked from the index page.

bugzilla.org links for release notes
------------------------------------
3.0: http://www.bugzilla.org/releases/3.0/release-notes.html

***************************************
*** The Bugzilla 2.22 Release Notes ***
***************************************

Table of Contents
*****************

- Introduction
- Important Updates In This Point Release
- Minimum Requirements
    * Perl
    * For MySQL Users
    * For PostgreSQL Users
    * Required Perl Modules
    * Optional Perl Modules
- What's New?
    * Complete PostgreSQL Support
    * Parameters In Sections
    * One Codebase, Multiple Databases
    * UTF-8 for New Installations
    * Admins Can Impersonate Users
    * Bug Import and Moving Improvements
    * Adding Individual Bugs to Saved Searches
    * Attach URLs
    * Optional "Strict Isolation" for Groups
    * "editcomponents" Change
    * "shutdownhtml" Change
    * Miscellaneous Improvements
    * All Changes
- Deprecated Features
- Outstanding Issues (<======================== IMPORTANT, PLEASE READ)
- How to Upgrade From An Older Bugzilla
    * Steps for Upgrading
- Code Changes Which May Affect Customizations
    * CGI.pl is Gone
    * Other Changes
- Security Fixes In 2.22 Releases
- Release Notes for Previous Versions

Introduction
************
Bugzilla 2.22 is one of our most polished releases. We did a lot of
small cleanups to make Bugzilla easier to use and more useful in
many, many small ways, in addition to adding some major new features.

This document contains the release notes for Bugzilla 2.22.
In this document, recently added, changed, and removed features
of Bugzilla are described. If you are upgrading from an older version,
you will definitely want to read these release notes in detail, so that
you have an idea of what has changed.

If you are upgrading from a version before 2.20, also read the 2.20 
release notes (lower in this file) and any previous release notes.

If you are installing a new Bugzilla, you will still want to look over
the release notes to see if there is any particularly important 
information that affects your installation.

If you would like to contribute code to Bugzilla, read our 
Contributor's Guide at:

http://www.bugzilla.org/docs/contributor.html


Important Updates In This Point Release
***************************************

This section describes bugs fixed in releases after the original 2.22
release.

Version 2.22.2
--------------

+ Make Bugzilla compatible with Template Toolkit 2.15 (bug 357374)

+ Make Bugzilla compatible with versions of MySQL higher than 5.0.25
  (bug 321645)

+ Sanity Check can now only be run by people with the "admin" privilege.
  (bug 91761)

Version 2.22.1
--------------

+ When sending mail, Bugzilla could throw the error "Insecure dependency in
  exec while running with -T switch" (bug 340538).

+ Using the public webdot server (for dependency graphs) should work 
  again (bug 351243).

+ The "I'm added to or removed from this capacity" email preference
  wasn't working for new bugs (bug 349852).

+ The original release of 2.22 incorrectly said it required Template-Toolkit
  version 2.08. In actual fact, Bugzilla requires version 2.10 (bug 351478).

+ votes.cgi would crash if your bug was the one confirming a bug (bug 351300).

+ checksetup.pl now correctly reports if your Template::Plugin::GD module
  is missing. If missing, it could lead to charts and graphs not working
  (bug 345389).

+ The "Keyword" field on buglist.cgi was not sorted alphabetically, so
  it wasn't very useful for sorting (bug 342828).

+ Sendmail will no longer complain about there being a newline in the
  email address, when Bugzilla sends mail (bug 331365).

+ contrib/bzdbcopy.pl would try to insert an invalid value into the
  database, unnecessarily (bug 335572).

+ Deleting a bug now correctly deletes its attachments from the database
  (bug 339667).


Minimum Requirements
********************

Perl
----

  Perl v5.6.1              (Non-Windows platforms)
  ActiveState Perl v5.8.1  (Windows only)

  Note that this is the last release of Bugzilla to support perl 5.6.x--
  future versions will require perl 5.8.

For MySQL Users
---------------

  MySQL v4.0.14                    (changed from 2.20)
  perl module: DBD::mysql v2.9003  (changed from 2.18)

For PostgreSQL Users
--------------------

  PostgreSQL 7.3.x
  perl module: DBD::Pg 1.31 (1.41 required for PostgreSQL 8+)

  WARNING: DBD::Pg 1.43 has a bug which causes checksetup.pl to fail
  and corrupt the database. If you are using DBD::Pg 1.43, either downgrade
  to 1.41 or upgrade to 1.45 (1.42 and 1.44 seem broken somehow too).

  Note that this is the last release of Bugzilla to support PostgreSQL 7.x.
  Future versions will require PostgreSQL 8.0 and DBD::Pg 1.45.

Required Perl Modules
---------------------

  AppConfig v1.52
  CGI v2.93
  Data::Dumper (any)
  Date::Format v2.21
  DBI v1.38
  File::Spec v0.84
  File::Temp (any)
  Template Toolkit v2.10 (changed from 2.20)
  Text::Wrap v2001.0131
  Mail::Mailer v1.67     (changed from 2.20)
  MIME::Base64 v3.01     (new in 2.22)
  MIME::Parser v5.406    (new in 2.22)
  Storable (any)

  Note: The SMTP support in Mail::Mailer 1.73 (the most recent version)
        is broken. The last known working version is 1.67.

Optional Perl Modules
---------------------

  Chart::Base v1.0
  GD v1.20
  GD::Graph (any)
  GD::Text::Align (any)
  Net::LDAP (any)
  PatchReader v0.9.4
  XML::Twig (any)       (new in 2.22)
  Image::Magick         (new in 2.22)


What's New?
***********

Complete PostgreSQL Support
---------------------------
Bugzilla 2.20 contained experimental support for PostgreSQL.
In Bugzilla 2.22, PostgreSQL support is fully complete and stable. Using
PostgreSQL with Bugzilla should be as stable as using MySQL, and if
you experience any problems they will be taken as seriously as if you
were running MySQL.

There are no known remaining major problems with Bugzilla on PostgreSQL.
All features of Bugzilla have been tested and work.


Parameters In Sections
----------------------
Long-time users of Bugzilla know that over time the parameter list has
grown quite large. It has now been split into sections to make it easier
to use.


One Codebase, Multiple Databases
--------------------------------
There is now limited support for having multiple projects use the
same Bugzilla codebase, but all have separate databases.

The different projects can have their own templates and their own
bug database, but all use the same set of Bugzilla code in the same
directory.

To enable this, set an environment variable called PROJECT when
calling the Bugzilla CGIs. Then for each project, you can have
a localconfig.PROJECT (where "PROJECT" is the value of the PROJECT
environment variable) file for the database parameters, and a 
template/en/PROJECT directory (where "PROJECT" is the value of the
PROJECT environment variable)

This feature isn't documented yet, but we hope to have documentation for
it soon.


UTF-8 For New Installations
---------------------------
If this is the first time you're installing Bugzilla, it will now use
UTF-8 encoding for all pages, automatically. It will also send emails
in UTF-8. This eliminates most of the internationalization problems
users have experienced, as one Bugzilla page may now contain any number
of languages simultaneously.

If you are upgrading and you want to use UTF-8, just turn on the "utf8"
Parameter. However, realize that if you have non-UTF-8 data in your 
Bugzilla, it will appear unreadable. (If you just have ASCII in your
database, you're safe to turn on the "utf8" parameter, definitely.)


Admins Can Impersonate Users
----------------------------
User impersonation (think of the su/sudo command on Unix) allows you
to view pages and perform actions as if you are logged in as someone else,
without having to know their password.

A user in the new "bz_sudoers" group has the option of "becoming"
any user in Bugzilla. Once they "become" that user, they *are* that user
for the rest of the session, until they decide to switch back to being
themselves.

However, they cannot "become" any user in the "bz_sudo_protect" group.
This group includes everybody in the "admin" and "bz_sudoers" groups by 
default.

Any time a user is impersonated, they will get an email notifying them
who has impersonated them.


Bug Import and Moving Improvements
----------------------------------
The XML Import script, importxml.pl, has been completely re-written.

It now:

  * Correctly imports the "priority" field
  * Understands when the "Reporter" or "CC List" security boxes 
    are unchecked on the bug.
  * Places bugs in the appropriate groups
  * Allows attachments to be imported
  * Is much more forgiving about small problems in the XML


Adding Individual Bugs to Saved Searches
----------------------------------------
Users now have the option of adding an individual bug to any
particular Saved Search. If you don't like having the entry box in
your footer for this feature, you can disable it in your Preferences.


Attach URLs
-----------
Instead of attaching a file, you can now also attach a URL to a bug.
This will show up just like an attachment on show_bug.cgi, but when
you click on it, it will take you to the URL.

To enable this, turn on the "allow_attach_url" parameter.


Optional "Strict Isolation" for Groups
--------------------------------------
If you turn on the "strict_isolation" parameter in Bugzilla, you
will *not* be able to add any user to the CC field (or set them
as an Assignee or QA Contact) unless that user could normally see
the bug. That is, you will no longer be able to "accidentally" 
(or intentionally) give somebody access to a bug that they 
otherwise couldn't see.


"editcomponents" Change
-----------------------
Previously, all users who had "editcomponents" could see every Product,
using the editcomponents.cgi script. Now, users with "editcomponents"
can only see Products that they normally have access to.

This restriction also affects editversions.cgi, editmilestones.cgi and
editproducts.cgi.


"shutdownhtml" Change
---------------------
All of Bugzilla is now affected by the "shutdownhtml" parameter,
including command-line scripts. checksetup.pl is exempt. Many scripts
(such as collectstats.pl and whine.pl) will just exit silently when
"shutdownhtml" is turned on.


Miscellaneous Improvements
--------------------------

- Added a frequently-requested user preference for whether or not to go
  to the next bug in your list after submitting changes to a bug.

- The ability to do relative date searches (like "1d" for "1 day" or "1w"
  for "1 week") by hour now, in addition to days and other units of time.

- "Alias" added to the New Bug form, for users with editbugs.

- Users can now actually see the descriptions of flags that you enter
  in editflagtypes.cgi. The description will appear as a tooltip
  when a user places their mouse over the flag name on show_bug.cgi.

- Bugzilla will optionally convert BMP attachments into PNGs for you.
  See the "convert_uncompressed_images" in the "Attachments" section
  of the Parameters.

- You can now edit the Status Whiteboard when you are changing multiple
  bugs at once.

- The way that groups work in the database has changed, and large-scale 
  Bugzilla use with many concurrent users should be much faster, as a 
  result. (Technical Details: The need for Bugzilla to "derive groups" 
  has gone away pretty much entirely.)

- Performance improvements on searching attachment information that's not
  the actual content of the attachment (such as searching the Attachment
  Description or the Attachment MIME Type)

- You can now specify multiple email addresses, comma-separated, when 
  setting the requestee of a flag, and it will set the flag once for each
  of those email addresses

- "Bug Creation Time" is now searchable in the Boolean Charts.

- When you mark a comment on a bug as private, the background color
  of the comment will change immediately. However, in order for
  Bugzilla to register that the comment is now private, you still
  have to "submit" the changes.

- Emails sent from Bugzilla now have "X-Bugzilla-Keywords" and
  "X-Bugzilla-Severity" by default, containing the information
  from the related Bugzilla fields.

- You can now change the assignee and QA contact on multiple bugs at
  once even when those bugs are in different products.

- contrib/merge-users.pl allows you to merge two user accounts. This is
  particulary useful when a user opened several accounts and only one should
  be kept. It also lets you merge a deleted account with an existing one.

All Changes
-----------

If you'd like to see all the changes between Bugzilla 2.20 and Bugzilla
2.22, see:

http://tinyurl.com/9p2tm


Deprecated Features
*******************

- This is the last release of Bugzilla to support perl 5.6.x. All future
  versions of Bugzilla will require at least perl 5.8.

  This is the last release of Bugzilla to support PostgreSQL 7.x. Future
  releases using PostgreSQL will require PostgreSQL 8.0 and DBD::Pg 1.45.

Outstanding Issues
******************

- bug 305836: PostgreSQL users: do not use DBD::Pg version 1.43 with 
  Bugzilla. It has a bug which can corrupt the database. Version 1.41
  is fine. Version 1.45 or higher is fine too.

- (No Bug Number) VERY IMPORTANT: If you have customized the values in
  your Status/Resolution field, you must edit checksetup.pl BEFORE YOU
  RUN IT. Find the line that starts like this:

  bug_status   => ["UNCONFIRMED",

  That's where you set the values for the Status field.

  resolution   => ["","FIXED",

  And that's where you set values for the Resolution field.

  Those are both near line 1826 in checksetup.pl.

  If you forget to do this, you will have to manually edit the "bug_status"
  and "resolution" tables in the database to contain the correct values.

- bug 276230: The support for restricting access to particular Categories of 
  New Charts is not complete. You should treat the 'chartgroup' Param as the 
  only access mechanism available. However, additionally, charts migrated from
  Old Charts will be restricted to the groups that are marked MANDATORY for 
  the corresponding Product. There is currently no way to change this 
  restriction, and the groupings will not be updated if the group configuration
  for the Product changes.

- bug 37765: If you use the "sendmail" support of Bugzilla,
  and you use an MTA which is *not* Sendmail (such as Postfix, Exim, etc.)
  make sure the "sendmailnow" parameter is ON or Bugzilla will not send
  e-mail correctly.

- bug 69621: If you rename or remove a keyword that is in use on bugs, you will
  need to rebuild the "keyword cache" by running sanitycheck.cgi and choosing
  the option to rebuild the cache when it asks. Otherwise keywords may not show
  up properly in search results.

- (No Bug Number) If you have a lot of non-ASCII data in your Bugzilla (for 
  example, if you use a translation of Bugzilla), don't enable the XS::Stash
  option when you install the Template Toolkit, or your Bugzilla installation
  may become slow. This problem is fixed in a not-yet-released version of the
  Template Toolkit (after 2.14).

- Bug 99215: Flags are not protected by "mid-air collision" detection.
  Nor are any attachment changes.

- Bug 89822: When changing multiple bugs at the same time, there is no
  "mid-air collision" protection.

- bug 322955: The email interface (bug_mail.pl) in the contrib/ directory
  has not been maintained (as it has no maintainer), and does not work 
  properly. We hope to have this fixed in our next major release of 
  Bugzilla; however, any help or contributions in this area are very 
  welcome.


How to Upgrade From An Older Bugzilla
*************************************

NOTE: Upgrading from a large installation (over 10,000 bugs) running 2.18
      or before may take a significant amount of time. checksetup will 
      try to let you know how long it will take, but expect downtime 
      of an hour or more if you have many bugs, many attachments, 
      or many users.

Steps for Upgrading
-------------------

1) Read these entire Release Notes, particularly the "Outstanding Issues"
   and "Security Fixes" sections.

2) View the Sanity Check (sanitycheck.cgi) page on your installation before
   upgrading. Attempt to fix all warnings that the page produces before
   you go any further, or you may experience problems during your upgrade.

3) Make a backup of the Bugzilla database before you upgrade, perhaps
   by using mysqldump. THIS IS VERY IMPORTANT. If anything goes wrong
   during the upgrade, your installation can be corrupted beyond
   recovery. Having a backup keeps you safe.

   Example:

      mysqldump -u root -p bugs > bugs-db.sql

4) Replace the files in your installation with the new version of Bugzilla,
   or you can try to use CVS to upgrade. The bugzilla.org website has 
   instructions on how to do the actual installation.

   You can also use a brand-new Bugzilla directory, as long as you
   copy over the old data/ directory and the "localconfig" file to the
   new installation.

5) Run checksetup.pl after you install the new version.

7) View the Sanity Check page again after you run checksetup.pl.

8) It is recommended that, if possible, you fix any problems you find
   immediately. Failure to do this may mean that Bugzilla will not work 
   correctly. Be aware that if the sanity check page contains more errors after
   an upgrade, it doesn't necessarily mean there are more errors in your 
   database, as additional tests are added to the sanity check over time, and 
   it is possible that those errors weren't being checked for in the old 
   version.

9) This version of Bugzilla contains improvements to the email that
   Bugzilla sends when a bug is changed. The template for that email 
   is contained in the "newchangedmail" parameter. If you would like
   to take advantage of the email enhancements in this version of
   Bugzilla, reset that parameter to its default. (You can customize
   it after that again, if you want.)


Code Changes Which May Affect Customizations
********************************************

CGI.pl is Gone
--------------
The CGI.pl file, which used to contain many global functions, and which
also contained initialization code for every CGI, is gone. The functions
have been moved to various places and sometimes renamed.

The initialization code that used to happen inside CGI.pl is now inside
of Bugzilla.pm. All CGIs must "use Bugzilla" in one way or another. (Some
CGIs "use Bugzilla" by doing "require globals.pl".)


Deriving Groups No Longer Happens
---------------------------------
Bugzilla no longer needs to "derive groups" in advance. That is, previously
Bugzilla used to flatten the group heirarchy into the user_group_map
table. (That is, show that a user was in every group they were in,
even if they were only in that group because they belonged to *another*
group.) Now the table only contains groups that the user is in directly,
and groups that they are in because of a regexp.

Instead, The Bugzilla::User->group function determines the groups a user
is in when called.

We did this because the group derivation was causing a lot of complexity
in the code, and also deriving the groups was a slow process that 
frequently had to happen inside of a database lock while sending mail
or viewing a bug list.

See https://bugzilla.mozilla.org/show_bug.cgi?id=304583 for details.


Other Changes
-------------

- The move.pl script's functionality has been merged into process_bug.cgi.

- $::template and $::vars are gone from globals.pl. Instead of $::template,
  use Bugzilla->template. Every script creates the $vars variable by itself
  instead of using a global $::vars variable.

- $::userid is gone. Instead use Bugzilla->user->id.

- QuickSearch is now in perl instead of in JavaScript. The code is in
  Bugzilla/Search/QuickSearch.pm. This makes it much easier to customize,
  and it also fixes some long-standing issues that QuickSearch had.

- Attachment data is now in the attach_data table. Other information
  about attachments is still in the "attachments" table.

- Much like the 2.20 release, many functions have been removed from
  globals.pl and CGI.pl. They were moved elsewhere and renamed.
  Search RESOLVED bugs in bugzilla.mozilla.org for the old
  version of the function name, and that will usually show you
  the bug where we moved the function, allowing you to find out
  what the new name and location is.

- This is the last release that contains the deprecated
  SendSQL, SqlQuote, FetchSqlData, MoreSqlData, and FetchOneColumn 
  functions. Instead, you should use DBI functions. For a very brief 
  example, see:

  http://www.bugzilla.org/docs/developer.html#sql-sendreceive


Security Fixes in 2.22 Releases
*******************************

A long-standing, well-known security issue is finally resolved in Bugzilla
2.22: Previously, the "Session ID" of each user could be easily guessed,
given enough time. This could have allowed an attacker to take over a
user's account, in certain circumstances. Now, the "Session ID" is totally
random, resolving this issue. See bug 119524 in bugzilla.mozilla.org for
details.

If you are very concerned about the security of your Bugzilla installation,
it would be a very good idea to run the following command on your
database immediately after upgrading:

TRUNCATE TABLE logincookies;

This is actually safe to do at any time--it just forces a logout of
every single user, even those with saved sessions. (It invalidates
every login cookie Bugzilla has ever given out.)

Version 2.22.2
--------------

A Cross-Site Scripting vulnerability is fixed in Bugzilla 2.22.2. You can
read the details of the fix at:

http://www.bugzilla.org/security/2.20.3/

Version 2.22.1
--------------

The Bugzilla team fixed two Information Leaks and three Cross-Site
Scripting vulnerabilities that existed in versions of Bugzilla
prior to 2.22.1. We strongly recommend that you update any 2.22 
installation to 2.22.1, to be protected from these vulnerabilities.

In addition, we have made an enhancement to security in this version
of Bugzilla. In previous versions, it was possible for malicious
users to exploit administrators in certain ways. Although this has
never happened (to our knowledge) in the real world, we thought it
was important that we protect administrators from this sort of attack.

You can see details on all the vulnerabilities and enhancements at:

http://www.bugzilla.org/security/2.18.5/


Release Notes For Previous Versions
************************************

***************************************
*** The Bugzilla 2.20 Release Notes ***
***************************************

Table of Contents
*****************

- Introduction
- Important Updates in this Point Release
    * Version 2.20.1
    * Version 2.20.2
- Minimum Requirements
    * Perl
    * For MySQL Users
    * For PostgreSQL Users
    * Required Perl Modules
    * Optional Perl Modules
- What's New?
    * Experimental PostgreSQL Support
    * New User-Interface Color/Style
    * Higher-Level Categorization of Bugs (above "Product")
    * Regular Reports by Email of Complex Queries ("Whining")
    * "Environment Variable" Authentication Method
    * User-List Drop-Down Menus
    * Server-Side Comment Wrapping
    * UI for Editing Priority, OS, Platform, and Severity
    * Bugzilla Queries as RSS
    * Choice of E-Mail Sending Methods
    * "User Preferences"
    * "Large Attachment" Storage
    * "User Visibility" Controls
    * Miscellaneous Improvements
    * All Changes
- Deprecated Features
- Outstanding Issues (<======================== IMPORTANT, PLEASE READ)
- How to Upgrade From An Older Bugzilla
    * Steps for Upgrading
- Code Changes Which May Affect Customizations
    * The New Database-Compatibility Layer
    * If You Customize Your Database...
    * Many Functions Renamed
    * User Preferences
    * Other Changes
- Security Fixes In 2.20 Releases
- Release Notes for Previous Versions


Introduction
************

This document contains the release notes for Bugzilla 2.20.
In this document, recently added, changed, and removed features
of Bugzilla are described. If you are upgrading from an older version,
you will definitely want to read these release notes in detail, so that
you have an idea of what has changed.

If you are upgrading from a version before 2.18, also read the 2.18 release
notes (lower in this file) and any previous release notes.

If you are installing a new Bugzilla, you will still want to look over
the release notes to see if there is any particularly important information
that affects your installation.

The 2.20 release has had about nine months of development since 2.18, but
they were nearly the most active nine months in Bugzilla's history. We hope
that users will appreciate our many external changes, and that Bugzilla
administators will find that our internal changes make their lives easier.

If you would like to contribute code to Bugzilla, read our 
Contributor's Guide at:

http://www.bugzilla.org/docs/contributor.html


Important Updates In This Point Release
***************************************

Version 2.20.1
--------------

+ Many PostgreSQL fixes, including fixing whine.pl on Pg 8 
  (bug 301062) and fixing the --regenerate option of collectstats.pl
  for all versions of Pg (bug 316971). However, users who want full
  PostgreSQL support are encouraged to use the 2.22 series, as 
  certain PostgreSQL bugs were discovered that will not be fixed 
  in 2.20 (their fixes were too complex).

+ In Bugzilla 2.20, the "administrator" user created by checksetup.pl
  would not ever be sent email, because their email preferences were
  left blank. This has been fixed for 2.20.1. However, if you created
  this administrative user with Bugzilla 2.20, make sure to go back
  and enable their Email Preferences. (bug 317489)

+ The bzdbcopy.pl script mentioned in these release notes
  has now actually been checked-in to the 2.20 branch, and so
  it's included in this release. (bug 291776)

+ When there's only one Classification, you now won't be required
  to pick a Classification on bug entry. (bug 311489)

+ You can no longer add dependencies on bugs you can't see.
  (bug 141593)

+ The CC list is included in "New" bug emails, again. (bug 313661)

+ In the original 2.20, certain scripts were not correctly using
  the "shadow database," if it was specified. This has been fixed
  in 2.20.1. (bug 313695)

+ "Saved Searches" that were saved before Bugzilla 2.20, would throw
  an error if they contained "Days Since Bug Changed." as part of their
  criteria. This has been fixed in Bugzilla 2.20.1. (bug 302599)

+ You can now successfully delete a product even when Target Milestones
  are turned off. (bug 317025)

+ checksetup.pl now correctly pre-compiles templates for languages other
  than English. (bug 304417)

+ The "All Closed" chart that is created by default in New Charts 
  now actually represents all closed bugs, and not all bugs in the 
  product. (bug 300473)

+ CSV bug lists with more than 1000 dates now work properly. (bug 257813)

+ Various bugs with upgrading from previous versions of Bugzilla 
  have been fixed. (bug 307662, bug 311047, bug 310108)

+ Many, many other bug fixes. See http://www.bugzilla.org/status/changes.html
  for details on what was fixed between 2.20 and 2.20.1.


Version 2.20.2
--------------

+ Adding a new attachment and taking the bug at the same time does not
  create a referential integrity problem anymore if the bug was marked as
  a duplicate (bug 332705).

+ Some additional admin links have been added to the sidebar (bug 282613).

+ A new test has been added to our test suite, named 012throwables.t.
  It will now make sure that all tags used in ThrowUserError() and
  ThrowCodeError() are defined, and that there are no unused tags (bug 312042).

+ whine.pl now works correctly on MySQL 4.0. MySQL 4.1 is not affected
  (bug 327348).

+ contrib/merge-users.pl allows you to merge two user accounts. This is
  especially useful when a user opened several accounts and only one
  should be kept (bug 188264).

+ The login form on index.cgi again works correctly on a fresh installation
  (bug 328108).

+ Email preferences are now set correctly when creating a new user account
  using the ENV method (bug 327355).


Minimum Requirements
********************

Perl
----

  Perl v5.6.1            (changed from 2.18)  (Non-Windows platforms)
  ActiveState Perl v5.8.1                     (Windows only)

For MySQL Users
---------------

  MySQL v3.23.41                   (Note: 2.22 will require MySQL 4.x)
  perl module: DBD::mysql v2.9003  (changed from 2.18)

For PostgreSQL Users       (new in 2.20)
--------------------

  PostgreSQL 7.3.x          (8.x has received less testing)
  perl module: DBD::Pg 1.31 (1.41 required for PostgreSQL 8+)

Required Perl Modules
---------------------

  AppConfig v1.52
  CGI v2.93
  Data::Dumper (any)
  Date::Format v2.21
  DBI v1.38              (changed from 2.18)
  File::Spec v0.84       (changed from 2.18)
  File::Temp (any)
  Template Toolkit v2.08
  Text::Wrap v2001.0131
  Mail::Mailer 1.65      (new in 2.20)
  Storable (any)         (new in 2.20)

Optional Perl Modules
---------------------

  Chart::Base v1.0
  GD v1.20
  GD::Graph (any)
  GD::Text::Align (any)
  Net::LDAP (any)
  PatchReader v0.9.4
  XML::Parser (any)


What's New?
***********

Experimental PostgreSQL Support
-------------------------------

In addition to MySQL, Bugzilla now also supports PostgreSQL. PostgreSQL
support is still somewhat experimental. Although most major features of
Bugzilla work on PostgreSQL in 2.20, there are probably still a few bugs
that need to be worked out.

PostgreSQL support in 2.20 is acceptable for smaller production
environments that don't mind running into a bug or two now and then.


New User-Interface Color/Style
------------------------------

You'll notice that Bugzilla looks a bit nicer, now! We've made a few
color and style changes to update the overall "feel" of Bugzilla's
User Inteface. We plan to do even more work on the UI for 2.22.


Higher-Level Categorization of Bugs (above "Product")
-----------------------------------------------------

Previous Bugzillas had "Products" that you could file bugs in,
and "Components" for those products. Now, "Products" can be grouped
into "Classifications."

To enable this, a Bugzilla administrator can turn on the 
"useclassification" parameter, using editparams.cgi.


Regular Reports by Email of Complex Queries ("Whining")
-------------------------------------------------------

You can now tell Bugzilla to do a specific query (or set of queries)
every X minutes/hours/days, and send you the results by email. This is
great for keeping track on a daily basis of what's going on in 
your Bugzilla.


"Environment Variable" Authentication Method
--------------------------------------------

You can now tell Bugzilla to accept a certain value passed in from
Apache as authentication for Bugzilla users. This means that Bugzilla
now "supports" any type of authentication that Apache supports.

To use this, set the "user_info_class" parameter to "ENV" and, at a 
minimum, set the "auth_env_email" parameter to the name of the 
Environment variable that passes the authenticated user (usually 
"REMOTE_USER").  If your webserver knows users' real names as well, also
set the "auth_env_realname" parameter.  If you are using a true 
single-signon system that assigns an identifier uniquely to an
individual, even across changes of email address, then set 
"auth_env_id" to the name of that variable.


User-List Drop-Down Menus
-------------------------

Now, anywhere in Bugzilla where you previously had to type in an
email address by hand, you have the choice of having Bugzilla instead
display a drop-down menu of users to pick from.

This feature is best for small installations with few users, because
on large installations the list grows too large to be useful.

To enable the feature, turn on the "usemenuforusers" parameter in
editparams.cgi.


Server-Side Comment Wrapping
----------------------------

In older Bugzillas, comments were wrapped to 80 characters by the
user's web browser, and then stored in the database that way. This caused
problems because some browsers did not wrap comments properly.

Now, Bugzilla stores comments unwrapped and wraps them at display time, so
all new comments should be properly wrapped. Also, when you upgrade, Bugzilla
will look for old "mis-wrapped" comments and attempt to wrap them properly.

Lines beginning with the ">" character are assumed to be quotes, and are
*not* wrapped.


UI for Editing Priority, OS, Platform, and Severity
---------------------------------------------------

Bugzilla now has a User Interface for adding and removing values
from the OS, Platform, Priority, and Severity fields. You can also
rename values. Any user in the "editcomponents" group can click
on the "Field Values" link in their page footer to edit these fields.

Also, the default list of choices for OS and Platform for new 
installations is now much smaller. Old installations will keep 
the same list they have now.


Bugzilla Queries as RSS
-----------------------

You can now view a Bugzilla query as valid RSS 1.0. This means that you
could add a particular query to your RSS aggregator, if you wanted, to
keep track of changes in Bugzilla.

To see a query as RSS, just click on the "RSS" link on the bottom of
your query results. Your query must return at least 1 result in order
for you to see the link.


Choice of E-Mail Sending Methods
--------------------------------

Bugzilla now uses perl's Mail::Mailer to send e-mail. This means that
you have several choices of how Bugzilla can send email. By default, it
still uses sendmail, but it can also use SMTP, qmail, or send all email
to a file instead of out to users.

A Bugzilla administrator can change which method is used by setting the
"mail_delivery_method" parameter in editparams.cgi.


"User Preferences"
------------------

Bugzilla users will now notice a section in their Preferences called
"General Preferences." Administrators will notice a new link called
"User Preferences."

The Preferences system allows Bugzilla developers to specify arbitrary
"user preferences" that change the behavior of certain parts of Bugzilla.
Administrators can control whether or not users are allowed to use these
preferences, and what the default settings are for a user who is not
logged in.

The first two preferences that we have implemented are:
  + "Show a quip at the top of each bug list"
  + "When viewing a bug, show comments in this order..."

We plan to implement more preferences in the future.


"Large Attachment" Storage
--------------------------

Bugzilla can now store very large attachments on disk instead of in the
database. These attachments can't be searched with Boolean Charts, but
they also don't take up database space, and they can be deleted individually
by the admin.

When uploading an attachment, a user chooses if it's a "Big File." If so,
it's stored on the disk instead of in the database.

To enable this feature, set the "maxlocalattachmentsize" parameter to
a non-zero value, in editparams.cgi.


"User Visibility" Controls
--------------------------

It is now possible to prevent users from encountering all other users when
using user-matching or drop-down userlists.  To enable this restriction, 
enable the "usevisibilitygroups" parameter.  Once this is enabled, each 
group's permissions will include a new column for "visible."  The members 
of any group for which the group being edited is visible will be
able to user-match this groups's users or see them in dropdown lists.

This does not control who a user can CC on a bug, only who they can 
see in the user-matching lists or drop-downs.

Miscellaneous Improvements
--------------------------

- Marking an attachment as obsolete will now cancel all pending flag
  requests for that attachment. That is, any flag that was set to "?"
  on that attachment will be cleared.

- You can now see which users are "watching" you, on the email 
  preferences page.

- You can tell Bugzilla to mark certain comments in a different
  color by adding "&mark=1,2,3,5-7" to the end of the show_bug.cgi URL,
  where "1,2,3,5-7" means "highlight comment 1, comment 2, comment 3, and
  comments 5 through 7."

- "QA Contact" now also appears on the New Bug page, if QA Contacts are
  enabled on your installation.

- Bugzilla email now has the "In-Reply-To" header added to it, so if
  you use an email client that supports threads, you can view your
  Bugzilla email in threads. If you are upgrading to a new version of
  Bugzilla, and you want this support, please see the instructions at:
  https://bugzilla.mozilla.org/attachment.cgi?id=172267

- The email preferences system has been slightly updated. You will notice
  the changes on your Email Preferences page.

- You can now negate individual "boolean charts" (in the 
  "Advanced Searching" section at the bottom of the "Advanced 
   Search" page). That is, you can add "NOT" to the front of them.

- You can add the words %assignee%, %reporter%, %user% (yourself), or
  %qacontact% on the right-hand side of a Boolean Chart. For example, you
  could make a Boolean Chart which said "Reporter" "does not equal" 
  "%assignee%". That would give you all bugs where the Reporter was not
  the same as the Assignee.

- You can now search Boolean Charts by "commenter."

- If you have a group with no name, it will be re-named to "group_#" where
  "#" is the numeric Bugzilla Group ID for that group.

- If you are using time-tracking, you can now see a report of time spent
  on bugs using summarize_time.cgi.

- If you are using time-tracking, bugzilla will now set "hours remaining"
  to "0" automatically if you RESOLVE a bug, whether you are in the
  time-tracking group or not.


Deprecated Features
*******************

- Bugzilla 2.20 is the last Bugzilla version to support MySQL 3.23.x.
  Starting with Bugzilla 2.22, Bugzilla will require MySQL 4.0.x. This will
  allow Bugzilla to take advantage of the advanced features of MySQL 4.


Outstanding Issues
******************

- (No Bug Number) VERY IMPORTANT: If you have customized the values in
  your Status/Resolution field, you must edit checksetup.pl BEFORE YOU
  RUN IT. Find the line that starts like this:

  bug_status   => ["UNCONFIRMED",

  That's where you set the values for the Status field.

  resolution   => ["","FIXED",

  And that's where you set values for the Resolution field.

  Those are both near line 1826 in checksetup.pl.

  If you forget to do this, you will have to manually edit the "bug_status"
  and "resolution" tables in the database to contain the correct values.

- bug 37765: VERY IMPORTANT: If you use the "sendmail" support of Bugzilla,
  and you use an MTA which is *not* Sendmail (such as Postfix, Exim, etc.) 
  you MUST turn on the "sendmailnow" parameter or Bugzilla will not send 
  e-mail correctly.

- (No Bug Number) If you close your web browser while the process_bug.cgi
  or post_bug.cgi screen is running, not all emails will be sent, and
  the next time that that bug is updated, there will be two updates. This
  is because of a behavior of Apache that is beyond our control.

- bug 276230: The support for restricting access to particular Categories of 
  New Charts is not complete. You should treat the 'chartgroup' Param as the 
  only access mechanism available. However, additionally, charts migrated from
  Old Charts will be restricted to the groups that are marked MANDATORY for 
  the corresponding Product. There is currently no way to change this 
  restriction, and the groupings will not be updated if the group configuration
  for the Product changes. This will not be fixed in the 2.20 branch.

- bug 69621: If you rename or remove a keyword that is in use on bugs, you will
  need to rebuild the "keyword cache" by running sanitycheck.cgi and choosing
  the option to rebuild the cache when it asks. Otherwise keywords may not show
  up properly in search results.

- (No Bug Number) If you have a lot of non-ASCII data in your Bugzilla (for 
  example, if you use a translation of Bugzilla), don't enable the XS::Stash
  option when you install the Template Toolkit, or your Bugzilla installation
  may become slow. This problem is fixed in a not-yet-released version of the
  Template Toolkit (after 2.14).

- If at any time you upgraded from a version of Bugzilla between 2.17.4 -
  2.17.7 to either 2.18rc3 or 2.19.1, you must manually fix your New Charts in
  order for them to work. See the following link for instructions on how to do
  this: https://bugzilla.mozilla.org/show_bug.cgi?id=276237#c18
  If you are using 2.18rc3, but did not upgrade from version 2.17.4 or newer,
  then you don't need to do this.

- (No Bug Number) If your DBI is really, really old, Bugzilla might fail
  with a strange error message when you try to run checksetup.pl. Try
  upgrading your DBI using: perl -MCPAN -e'install DBI'

- Bug 126266: Bugzilla does not use UTF-8 to display pages. This means
  that if you enter non-ASCII characters into Bugzilla, they may
  display strangely, or Bugzilla may have other problems. For a workaround,
  see: http://www.bugzilla.org/docs/tip/html/security-bugzilla.html
  This has been fixed in the 2.22 series.

- Bug 99215: Flags are not protected by "mid-air collision" detection.
  Nor are any attachment changes.

- Bug 89822: When changing multiple bugs at the same time, there is no
  "mid-air collision" protection.

- Bug 285614: importxml.pl may be broken in many different ways.
  It has been fixed and completely re-written in the 2.22 series.

- (No Bug Number) Note that the email interface (bug_mail.pl) in the 
  contrib/ directory has not been maintained (as it has no maintainer),
  and so may not be working properly. Contributions are welcome, if
  anybody would like to work on it.


Upgrading From An Older Bugzilla
************************************

NOTE: Running checksetup.pl to upgrade a large installation (over 10,000 bugs)
      may take a significant amount of time. checksetup will try to let
      you know how long it will take, but expect downtime of an hour or
      more if you have many bugs, many attachments, or many users.

Steps for Upgrading
-------------------

1) View the Sanity Check (sanitycheck.cgi) page on your installation before
   upgrading. Attempt to fix all warnings that the page produces before
   you go any further, or you may experience problems during your upgrade.

2) Make a backup of the  Bugzilla database before you upgrade, perhaps 
   by using mysqldump.

   Example:

      mysqldump -u root -p --databases bugs > bugs.db.backup

3) Replace the files in your installation with the new version of Bugzilla,
   or you can try to use CVS to upgrade. The Bugzilla.org website has 
   instructions on how to do the actual installation.

4) Make sure that you run checksetup.pl after you install the new version.

5) View the Sanity Check page again after you run checksetup.pl.

6) It is recommended that, if possible, you fix any problems you find
   immediately. Failure to do this may mean that Bugzilla will not work 
   correctly. Be aware that if the sanity check page contains more errors after
   an upgrade, it doesn't necessarily mean there are more errors in your 
   database, as additional tests are added to the sanity check over time, and 
   it is possible that those errors weren't being checked for in the old 
   version.

7) If you want threading support on your Bugzilla email (see the 
   "Miscellaneous Improvements" section above for a description),
    you need to follow the instructions at:
    https://bugzilla.mozilla.org/attachment.cgi?id=172267


Code Changes Which May Affect Customizations
********************************************

The New Database-Compatibility Layer
------------------------------------

For most customizations, this should have no effect. However, you should
be aware that Bugzilla->dbh is now an instance of "Bugzilla::DB" instead
of being a DBI object directly. In fact, it's actually a 
Bugzilla::DB::Mysql for MySQL users, and a Bugzilla::DB::Pg for 
PostgreSQL users.

Anything called from $dbh (like $dbh->bz_last_key) that starts with
"bz_" or "sql_" is a custom Bugzilla function. Anything *not* starting
with those two prefixes is a normal DBI function.

Methods whose names start with "sql_" generate a piece of a SQL statement.
They generate the correct version of the statement for whichever database
you are using.

Methods whose names start with "bz_" do something directly.

You can see more documentation about this at:

http://www.bugzilla.org/docs/2.20/pod/Bugzilla/DB.pm


If You Customize Your Database...
---------------------------------

In order to support multiple databases, we had to do something sort of
tricky. Bugzilla now stores what it *thinks* the current database schema
is, in a table called bz_schema.

This means that when checksetup changes the database, it updates the
bz_schema table. When *you* update the database, without using 
checksetup to do it, the bz_schema table is *not* updated.

So, if you're going to add/remove a new column/table to Bugzilla, or if you're
going to change the definition of a column, try to do it by adding code to
checksetup in the correct place. (It's one of the places where you find
the word "--TABLE--".)

You can see the documentation on the $dbh functions used to do this at:

http://www.bugzilla.org/docs/2.20/pod/Bugzilla/DB.pm#schema_modification_methods


Many Functions Renamed
----------------------

We are reorganizing the Bugzilla code so that it can support mod_perl. As
part of this, we are moving all functions out of globals.pl and CGI.pl, and
into modules in the Bugzilla/ directory.

Sometimes when we moved them, we also renamed them. The new Bugzilla standard
is to have functions_named_like_this, instead of FunctionsNamedLikeThis.

So if you were using a FunctionNamedLikeThis that no longer works, try just
using it as function_named_like_this. If that doesn't work, you may have to
search for where we put it, and what we renamed it to. Most of the functions
moved to logical places.

If you really can't find it, search bugzilla.mozilla.org using the name
of the old function. We usually moved one function per bug, so the new
name will be somewhere in a bug report.


User Preferences
----------------

Bugzilla now has a "User Preferences" system! These preferences are stored
in the database, and specified by a Bugzilla developer. The Bugzilla
developers actually call these "settings," but we called them "User 
Preferences" in the UI to make things clearer.

You access a user's settings differently depending on if you are in a
.cgi file or in a template file:

CGI: Bugzilla->user->settings->{'setting_name'}->value
Template: Bugzilla.user.settings.setting_name.value

Where "setting_name" is the name of the setting. You can see the current
setting names in the "setting" table in the database.

Remember that sometimes you may want to check a user's settings when 
making a customization.

To see how to add new settings, search for "add_setting" in checksetup.pl.
Also see the template: template/en/default/global/setting-descs.none.tmpl.

Other Changes
-------------

- The $::unconfirmedstate variable has been replaced by the actual string
  "UNCONFIRMED" everywhere in Bugzilla code.

- The %::FORM and %::MFORM variables are no longer used to access form
  data. Instead, use $cgi->param(). There are many examples of how to do
  this, all over the Bugzilla code.

- SendSQL() and related calls are deprecated, and the various $dbh methods
  should be used instead, such as $dbh->prepare() and $dbh->execute().
  Bugzilla->dbh is the $dbh handle to use. For more information on how
  to use the $dbh methods, see:  http://search.cpan.org/dist/DBI/DBI.pm

- The $::userid variable will be going away. Use Bugzilla->user->id instead.

- All global variables (any that start with $::, @::, or %::) will 
  be entirely gone by Bugzilla 2.24.


Security Fixes in 2.20 Releases
*******************************

2.20.1
------

There were three security issues discovered after the release of
Bugzilla 2.20 that we resolved for Bugzilla 2.20.1. One SQL Injection
(from an administrator only), one Cross-Site Scripting vulnerability
(that mostly affects only the user who can exploit it), and one minor,
extremely specific information leak.

To see details on the vulnerabilities that were fixed, see the 
Security Advisory at:

http://www.bugzilla.org/security/2.16.10/


Release Notes for Previous Versions
***********************************

*****************************************
*** The Bugzilla 2.18.x Release Notes ***
*****************************************

Table of Contents
*****************

- Introduction
- Important Updates In This Point Release
    * Version 2.18.1
    * Version 2.18.2
- Requirements
    * Dependency Requirements
- What's New?
    * Generic Reporting
    * Generic Charting
    * Request System
    * Enterprise Group Support
    * User Wildcard Matching
    * Support for "Insiders"
    * Time Tracking
    * Authentication module/LDAP improvements
    * Improved localization support
    * Patch Viewer
    * Comment Reply Links
    * Full-Text Search
    * Email Address Munging
    * Simple Search
    * Miscellaneous Improvements
    * All Changes
- What's Changed?
    * Flag Names
    * New Saved Search User Interface
    * Rules for changing fields
- Removed Features
- Code Changes Which May Affect Customizations
- Recommended Practice for the Upgrade
    * Note About Upgrading From MySQL With ISAM Tables
    * Steps for Upgrading
- Outstanding Issues (<======================== IMPORTANT, PLEASE READ)
- Security Fixes In 2.18 Releases
- Detailed Version-To-Version Release Notes


Introduction
************

This document contains the release notes for Bugzilla 2.18 and
the bugfix releases after 2.18. In this document, recently added,
changed, and removed features of Bugzilla are described.

The 2.18 release is our current stable series, containing the results
of over two years of hard and dedicated work by volunteers all over 
the world under the lead of Dave Miller.


Important Updates In This Point Release
***************************************

There are usually many other bug fixes than those listed below,
but the below fixes are the ones that we thought System Administrators
would like to specifically know about.

To see a listing of all changes in this release, you can use the
table available at:

http://www.bugzilla.org/status/changes.html

Version 2.18.1
--------------

+ You can now enter a negative time for "Hours Worked"
  in the time-tracking area. (Bug 271276)

+ The BugMail.pm customization required for Windows (as
  described in the Bugzilla Guide) now actually works. (Bug 280911)

+ Users who were using Bugzilla 2.8 can now successfully upgrade
  to 2.18.1 (they couldn't upgrade to 2.18). (Bug 283403)

+ Dependency mails are now properly sent during a mass-change of bugs.
  (Bug 178157)


Version 2.18.2
--------------

+ You can now create accounts with createaccount.cgi even
  when the "requirelogin" parameter is turned on. (Bug 294778)

+ Bugs that are in disabled groups may not show a padlock
  on the bug list, or may otherwise behave strangely. You
  can now fix this using sanitycheck.cgi. (Bug 277454)

+ If sendmail dies while you are marking a bug 
  as a duplicate, the duplicates table will no longer become 
  corrupted. (Bug 225042)


Requirements
************

Dependency Requirements
-----------------------

Minimum software requirements:

  MySQL v3.23.41         (changed from 2.16)
  Perl v5.6.0            (changed from 2.16)  (Non-Windows platforms)
  ActiveState Perl v5.8.1                     (Windows only)

Required Perl modules:

  AppConfig v1.52
  CGI v2.93              (new since 2.16)    (changed from 2.17.7)
  Data::Dumper (any)
  Date::Format v2.21     (changed from 2.16)
  DBI v1.36              (changed from 2.16)    (changed from 2.17.7)
  DBD::mysql v2.1010     (changed from 2.16)
  File::Spec v0.82
  File::Temp (any)
  Template Toolkit v2.08 (changed from 2.16)
  Text::Wrap v2001.0131

Optional Perl modules:

  Chart::Base v1.0       (changed from 2.16) (changed from 2.17.7)
  GD v1.20               (changed from 2.16)
  GD::Graph (any)        (new since 2.16)
  GD::Text::Align (any)  (new since 2.16)
  Net::LDAP (any)        (new since 2.16)
  PatchReader v0.9.4     (new since 2.16)    (changed from 2.17.7)
  XML::Parser (any)


What's New?
***********

Generic Reporting
-----------------

Bugzilla has a new mechanism for generating reports of the current state of
the bug database.  It has two related parts: a table-based view, and several
graphical views.

The table-based view allows you to specify an x, y and z (multiple tables of
data) axis to plot, and then restrict the bugs plotted using the standard
query form.  You can view the resulting data as an HTML or CSV export (e.g.:
for importing into a spreadsheet).

There are also bar, line and pie charts, which are defined in a very similar
way.  These views may be more appropriate for particular data types, and are
suitable for saving and then putting into presentations or web pages.


Generic Charting
----------------

Bugzilla has a new mechanism for generating charts (graphs over time) of any
arbitrary search. This is known as "New Charts." Legacy data from the previous
charting mechanism ("Old Charts") is migrated into the "New Charts" when you
upgrade. The Old Charts mechanism remains, but is deprecated and will be 
removed in a future version of Bugzilla.

Individual users can see/create charts as long as they are a member of the 
group specified in the Param 'chartgroup'. Data can be collected for 
personal charts every seven days (or a longer period, as set by the user). 
Charts created by an administrator can be made public (visible to all). Data 
is collected for administrator charts every day (or a longer period, as set 
by the admin).

The data is collected by the collectstats.pl script, which an administrator 
will need to arrange to be run once every day (see the manual). Chart data can
be plotted in a number of different ways, and different data sets can be
plotted on the same graph for comparison.

Please see the Known Bugs section for some important limitations relating to
access controls on charts.


Request System
---------------

The Request System (RS) is a set of enhancements that adds powerful flag
(superset of the old attachment status) features to the bugs.

RS allows for four states: off, granted, denied, and (optionally) requested,
where "granted" is the equivalent of "on". These additions mean it is no
longer necessary to define a status to negate another status (e.g.
"needs-work" to negate "has-review") because negation is built into each
status via the status' "denied" state.  Bug statuses: Previously only
attachments could have these kinds of statuses. RS enables them for bugs as
well. This feature can be used to request and grant/deny certain properties
for a bug, such as inclusion for a specific milestone or approval for checkin.
This way, Bugzilla supports the natural decision-making process in your
organization.

- Requests: Flags can now optionally be made requestable, which means users
  can ask other users to set them. When a user requests a flag, Bugzilla
  emails the requestee and adds the request to a browsable queue so both the
  requester and the requestee can keep track of its status. Once the
  requestee fulfills the request by setting the flag to either granted or
  denied, Bugzilla emails the requestee and removes the request from the
  queue.  This feature supports workflow like the mozilla.org code review
  and milestone approval processes, whereby code is peer reviewed before
  being committed and patches get approved by product release managers for
  inclusion in specific product releases.

- Product/component specificity: Previously flags were product-specific, and
  if you wanted the same flag for multiple products you had to define
  multiple flags with the same name. Flags are now
  product/component-specific, and a single flag can be enabled or disabled
  for multiple product/component combinations via inclusions and exclusions
  lists. Flags are enabled for all combinations on their inclusions list
  except those that appear on their exclusions list.


Enterprise Group Support
------------------------

Bugzilla is no longer limited to 55 access control groups. Administrators can
define an arbitrary number of access groups composed of individual users or
other groups.  The groups can be configured via the web interface to achieve a
wide variety of access control policies. See the documentation section on
'Groups And Group Controls' for details.


User Wildcard Matching
----------------------

Sites can now enable the use of wildcards and substrings in bug entry and
editing forms. If the user enters an incomplete username, he'll get a list of
users that matched the given username.


Support for "Insiders"
----------------------

If the 'insidergroup' parameter is defined, a specific group of users can be
designated insiders who can designate comments and attachments as private to
other insiders. These comments and attachments will be invisible to other
users who are not members of the insiders group even if the bugs to which they
apply are visible. Other insiders will see the comments and attachments with a
visual tinting indicating that they are private.


Time Tracking
-------------

Controls for tracking time spent fixing bugs are included in the bug form for
members of the group specified by the 'timetrackinggroup' parameter. Any time
comments are added to the bug, members of the time tracking group can add an
amount of time they spent, and it's figured into the total and displayed at
the top of the bug. Shown in the bug are your original estimate, the amount of
time spent so far, the revised estimate of how much time is remaining, and
your gain/loss on the original estimate.


Authentication module/LDAP improvements
---------------------------------------

Bugzilla's authentication mechanisms have been modularized, making pluggable
authentication schemes for Bugzilla a reality. Both the existing database and
LDAP systems were ported as part of modularization process. Additionally, the
CGI portion of the backend was redesigned to allow for authentication from
other sources, including (theoretically) email, which will help Bug 94850.

As part of this conversion, LDAP logins now use Perl's standard Net::LDAP
module, which has no external library dependencies.


Improved localization support
-----------------------------

Bugzilla administrators can now configure which languages are supported by
their installations and automatically serve correct, localized content to
users based on the HTTP 'Accept-Language' header sent from users' browsers.

There are currently localized templates available for: Arabic, Belarusian,
Chinese, French, German, Italian, Korean, Portuguese (Brazil) Spanish (Spain
or Mexico) and Russian.  These localized template packs are third-party
contributions, may only be available for specific versions, and may not be
supported in the future. (http://www.bugzilla.org/download/#localizations)


Patch Viewer
------------

Viewing and reviewing patches in Bugzilla is often difficult due to lack of
context, improper format and the inherent readability issues that raw patches
present. Patch Viewer is an enhancement to Bugzilla designed to fix that by
offering increased context, linking to sections, and integrating with Bonsai,
LXR and CVS.


Comment Reply Links
-------------------

In Edit Bug, each bug comment now includes a convenient (reply) link that
quotes the comment text into the textarea. This feature is only enabled in
Javascript-capable browsers, but causes no inconvenience to other user agents.


Full-Text Search
----------------

It is now possible to query the Bugzilla database using full-text searching,
which spans comments and summaries, and which searches for substrings and stem
variations of the search term. Basically, it's like using Google.


Email Address Munging
---------------------

The fact that raw email addresses are displayed in Bugzilla makes it trivial
for bots that spamharvest to spider through Bugzilla, in particular, through
Bugzilla's buglists. This change adds HTML obfuscation of email addresses as
they appear in the Bugzilla web pages.


Google-like Bug Search
----------------------

Bugzilla now includes a very simple, Google-like "Find a Specific Bug" page,
in addition to its advanced search page.


Miscellaneous Improvements
--------------------------

- The "Assigned To" field on the new bug page is now prefilled with the default
  component owner.

- A bug alias column is now available in the buglist page.

- Lists of bugs containing errors in the sanity check page now have a "view as
  buglist" link in addition to the individual bug links.

- Autolinkification Page - It's now possible to apply Bugzilla's comment
  hyperlinking algorithm to any text you like. This should be useful for status
  updates and other web pages which give lists of bugs. The bug links created
  include the subject, status and resolution of the bug as a tooltip.

- There are more <link> tags on the links toolbar for navigating quickly between
  different areas.

- Buglists are now available as comma-separated value files (CSV) and JavaScript
  (JS) as well as HTML and RDF.

- Keywords and dependencies can now be entered during initial bug entry.

- A CSS id signature unique to each Bugzilla installation is now added to the
  <body> tag on Bugzilla pages to allow custom end-user CSS to explicitly affect
  Bugzilla.

- Perl's path has been changed to a normal /usr/bin/perl from the original
  legacy "bonsaitools" path specifier.

- A new "always-require-login" parameter allows administrators to require a
  login before being able to view any page, except the front page.

- A developer may add an attachment, and also reassign a bug to himself as part
  of that single action.

- Bugzilla is now able to use the replication facilities provided by the
  MySQL database to handle updates from the main database to the secondaries.

- Mail handling is now between 125% to 175% faster.

- Guided Bug Entry: You can see a sample enter_bug.cgi template at 
  enter_bug.cgi?format=guided that "guides" users through the process of 
  filing a "good" bug. It needs to be modified before use in your organization.

- There is now a "Give me some help" link on the Advanced Search page that will
  enable pop-up help for every field on the page.

- The Bugzilla administrator can now forbid users from marking bugs RESOLVED 
  when there are unresolved dependencies.


All Changes
-----------

To see a list of EVERY bug that was fixed between 2.16 and 2.18 (over 1000),
see: http://tinyurl.com/6m3e4


What's Changed?
***************


Flag names
----------

Prerelease versions of Bugzilla 2.17 and 2.18 inadvertantly allowed
commas and spaces in the names of flags, which due to the way they're
processed, caused lots of internal havoc if you named flags to have
any commas or spaces in them.  Having commas or spaces in the names
can cause errors in the notification emails and in the bug activity
log.  The ability to create new flags with these characters has been
removed.  If you have any existing flags that you named that way,
running checksetup will attempt to automatically rename them by
replacing commas and spaces with underscores.


New Saved Search User Interface
-------------------------------

In previous Bugzilla versions, you could specify on the search page that you 
wanted to save a search and store it as a link in your footer. This option has
now moved to the search results page (buglist.cgi), where you will see a 
"Remember search" button with a box next to it to enter the name of the search.

You can manage your saved searches on the Preferences page.


Rules for changing fields
-------------------------

There have been some changes to the rules governing who can change which fields
of a bug report.  The rules for Bugzilla version 2.16 and 2.18, along with
differences between them, are listed below.  Bear in mind that there are other
restrictions on bug manipulation besides the ones listed below.  In particular,
the groups system enforces restrictions on who can create, edit, or even see
any given bug.

Bugzilla 2.16 rules:

- anyone can make a null change;
- anyone can add a comment;
- anyone in the editbugs group can make any change;
- the reporter can make any change to the status;
- anyone in the canconfirm group can change the status
  to any opened state (NEW, REOPENED, ASSIGNED).
- anyone can change the status to any opened state
  if the everconfirmed flag is set;
- the owner, QA contact, or reporter can make any change
  *except* changing the status to an opened state;
- No other changes are permitted.

[Note that these rules combine to allow the reporter to make any change
to the bug.]

Bugzilla 2.18 rules:

- anyone can make a null change;
- anyone can add a comment;
- anyone in the editbugs group can make any change;
- anyone in the canconfirm group can change the status
  from UNCONFIRMED to any opened state;
- the owner or QA contact can make any change;
- the reporter can make any change *except*:
  - changing the status from UNCONFIRMED to any opened state; or
  - changing the target milestone; or
  - changing the priority (unless the letsubmitterchoosepriority
    parameter is set).
- No other changes are permitted.

The effective differences in the rules:

- In 2.16, the reporter could always change anything about a bug.

  In 2.18, the reporter can't:

  - confirm the bug unless he is in the canconfirm group;
  - change the target milestone;
  - change the priority (unless the 'letsubmitterchoosepriority'
    parameter is set;

  (unless he is also the owner, the QA contact, or in the editbugs
  group, in which case he can do all these things).

- In 2.16, the owner or QA contact (if the 'useqacontact' parameter
  is set) can't change the bug status to an opened status unless they
  are also the reporter, or have editbugs or canconfirm, or the
  everconfirmed flag is set on the bug).

  In 2.18 the owner or QA contact can make any change to a bug.

- In 2.16, a member of the canconfirm group can set the status
  to any opened status.

  In 2.18 this is only possible if the status was previously
  the unconfirmed status.

- In 2.16, the status can be set to anything by anybody
  if the 'everconfirmed' flag is set.

  In 2.18, this authorization code does not pay any attention
  to the 'everconfirmed' flag.


Removed Features
****************

- Please note that Bugzilla no longer supports MySQL 3.22. The minimum required
  version is now 3.23.41.                                      

- The "shadow database" mechanism is no longer used. Instead, use MySQL's 
  built-in replication feature.

- If you have placed any comments in the localconfig file, they may be removed
  by checksetup.pl.


Code Changes Which May Affect Customizations
********************************************

- A mechanism (called "Template Hooks") for third party extensions to plug into
  existing templates without having to patch or replace distributed templates
  has been added. More information on this can be found in the documentation.

- Header output now uses CGI.pm, in a step towards enabling mod_perl
  compatibility. This change will affect users that had customized charsets in
  their CGI files: previously the charset had to be added everywhere that
  printed the Content-Type header; now it only needs changing in one spot, in
  Bugzilla/CGI.pm.

- $::FORM{} and $::COOKIE{} are deprecated. Use the $cgi methods to access
  them.

- $::userid is gone in favor of Bugzilla->user->id

- ConnectToDatabase() is gone (it's done automatically when you initialize the
  Bugzilla object)

- quietly_check_login() and confirm_login() are gone, use Bugzilla->login()
  with parameters for whether the login is required or not.

- Use Bugzilla->user->login in place of $::COOKIE{Bugzilla_login}

- You can tell if there's a user logged in or not by using
  Bugzilla->user rather than looking for $::userid==0.
  In new 2.18 code, use defined(Bugzilla->user) && (Bugzilla->user->id)
  In 2.20, this will become just (Bugzilla->user->id)
  In templates, always test [% IF user.id %] rather than [% IF user %]

- SendSQL() and related calls are deprecated, and the various $dbh methods 
  should be used instead, such as $dbh->prepare() and $dbh->execute(). 
  Bugzilla->dbh is the $dbh handle to use.


Recommended Practice for the Upgrade
************************************

Note About Upgrading From MySQL With ISAM Tables
------------------------------------------------
As previously noted in the Dependency Requirements MySQL is now required 
to be at least version 3.23.41.  This implies that all tables of type ISAM will 
be converted by the checksetup.pl script to MyISAM.


Steps for Upgrading
-------------------

1) View the Sanity Check (sanitycheck.cgi) page on your installation before
   upgrading.

2) As with any upgrade it is recommended that you make a backup of the 
   Bugzilla database before you upgrade, perhaps by using mysqldump.

   Example:

      mysqldump -u root -p --databases bugs > bugs.db.backup

3) Replace the files in your installation, or you can try to use CVS to upgrade.
   The Bugzilla.org website has instructions on how to do the actual 
   installation.

4) Make sure that you run checksetup.pl after you install the new version.

5) View the Sanity Check page again after you run checksetup.pl.

6) It is recommended that, if possible, you fix any problems you find
   immediately. Failure to do this may mean that Bugzilla will not work 
   correctly. Be aware that if the sanity check page contains more errors after
   an upgrade, it doesn't necessarily mean there are more errors in your 
   database, as additional tests are added to the sanity check over time, and 
   it is possible that those errors weren't being checked for in the old 
   version.


Outstanding Issues
******************

These are known problems with the release that we think you should know about. 
They each have a bug number for http://bugzilla.mozilla.org/

- If at any time you upgraded from a version of Bugzilla between 2.17.4 -
  2.17.7 to either 2.18rc3 or 2.19.1, you must manually fix your New Charts in
  order for them to work. See the following link for instructions on how to do
  this: https://bugzilla.mozilla.org/show_bug.cgi?id=276237#c18
  If you are using 2.18rc3, but did not upgrade from version 2.17.4 or newer,
  then you don't need to do this.

- bug 37765: If you use an MTA other than sendmail (such as Postfix, Exim, 
  etc.) you MUST turn on the "sendmailnow" parameter or Bugzilla will not send
  e-mail correctly.

- bug 276230: The support for restricting access to particular Categories of 
  New Charts is not complete. You should treat the 'chartgroup' Param as the 
  only access mechanism available. However, additionally, charts migrated from
  Old Charts will be restricted to the groups that are marked MANDATORY for 
  the corresponding Product. There is currently no way to change this 
  restriction, and the groupings will not be updated if the group configuration
  for the Product changes.

- bug 69621: If you rename or remove a keyword that is in use on bugs, you will
  need to rebuild the "keyword cache" by running sanitycheck.cgi and choosing
  the option to rebuild the cache when it asks. Otherwise keywords may not show
  up properly in search results.

- (No Bug Number) If you have a lot of non-ASCII data in your Bugzilla (for 
  example, if you use a translation of Bugzilla), don't enable the XS::Stash
  option when you install the Template Toolkit, or your Bugzilla installation
  may become slow. This problem is fixed in a not-yet-released version of the
  Template Toolkit (after 2.14).

- bug 266579: Users may be able to circumvent not having "canconfirm" privileges
  in some circumstances. This is fixed starting with 2.19.3, but will not
  be fixed in any 2.18 release, as the changes required to fix it are quite
  large.

- bug 99215: Attachment changes have no mid-air collision detection, unlike bug
  changes.

- bug 57350: Searching using the "commenter is" option may be VERY slow. Note 
  that searching for "field: comment, changed by: user@domain.com" is fast, 
  though.

- bug 151509: Using the boolean chart option "contains the string" with the 
  "flag name" field or certain other fields will cause Bugzilla to emit an 
  error. This is fixed in 2.20rc1, but will not be fixed in the 2.18 series.

- bug 234159: Bugzilla may sometimes send multiple notices in one email.

- bug 237107: If you search for attachment information using the Boolean Charts
  at the bottom of the Advanced Query page, bugs without attachments will not
  show up in the result list.


Security Fixes In 2.18 Releases
*******************************

Version 2.18
------------

Summary:     XSS in Internal Error messages in Bugzilla 2.16.7 and 2.18rc3
CVE Name:    CAN-2004-1061
Reference:   https://bugzilla.mozilla.org/show_bug.cgi?id=272620
Details:
     It is possible to send a carefully crafted URL to Bugzilla designed to
trigger an error message.  The Internal Error message includes javascript code
which displays the URL the user is visiting.  The javascript code does not
escape the URL before displaying it, allowing scripts contained in the URL to
be executed by the browser.  Many browsers do not allow unescaped URLs to be
sent to a webserver (thus complying with RFC 2616 section 2.3.1 and RFC 2396
section 2.4.3), and are thus immune to this issue.
    Browsers which are known to be immune: Firefox 1.0, Mozilla 1.7.5,
Camino 0.8.2, Netscape 7.2, Safari 1.2.4
     Browsers known to be susceptible: Internet Explorer 6 SP2,
Konqueror 3.2
     Browsers not listed here have not been tested.


Version 2.18.1
--------------

Two security issues were fixed in Bugzilla 2.18.1, neither of them 
critical.

See http://www.bugzilla.org/security/2.16.8/ for details.


Version 2.18.2
--------------

Two security issues were fixed in Bugzilla 2.18.2. One of them
is a major Information Leak/Unauthorized Bug Change. The other
is a minor Information Leak.

See http://www.bugzilla.org/security/2.18.1/ for details.


Detailed Version-To-Version Release Notes
*****************************************

*********************************************************
*** USERS UPGRADING FROM ALL VERSIONS PRIOR TO 2.16.7 ***
*********************************************************

*** Security fixes ***

- It is possible to send a carefully crafted HTTP POST message to
  process_bug.cgi which will remove keywords from a bug even if you don't have
  permissions to edit all bug fields (the "editbugs" permission).  Such changes
  are reported in "bug changed" email notifications, so they are easily
  detected and reversed if someone abuses it.  Users are now prevented from
  making changes to keywords if they do not have editbugs privileges. (bug
  252638)

*** Bug fixes of note ***

- Enforce a minimum of 10 minutes between attempts to reset a password, so
  we don't mailbomb the user if someone submits the form many times in a
  row. (bug 250897)

- Put products in alphabetical order on the create attachment status page.
  (bug 251427)

- Specify MyISAM as the table type when creating new tables.  MySQL 4.1 and
  up default to InnoDB, which doesn't support some of the indexing methods
  that we use. (bug 263165)

*********************************************************
*** USERS UPGRADING FROM ALL VERSIONS PRIOR TO 2.16.6 ***
*********************************************************

*** Security fixes ***

- If Bugzilla is configured to hide entire products from some users, both
  duplicates.cgi and the form for mass-editing a list of bugs in buglist.cgi
  can disclose the names of those hidden products to such users.
  (bugs 234825 and 234855)

- Several administration CGIs echo invalid data back to the user without
  escaping it.  (bug 235265)

- A user with privileges to grant membership to any group (i.e. usually an
  administrator) can trick editusers.cgi into executing arbitrary SQL.
  (bug 244272)

*** Bug fixes of note ***

- Allow XML import to function when there are regexp metacharacters in product
  names (bug 237591) 

- Allow the bug_email.pl contrib script to work with useqacontact (bug 239912) 

- Improve the error message used by checksetup.pl when the MySQL requirements
  are not met (bug 240228) 

- Elimnate the warning in checksetup.pl about the minimum sendmail version (bug
  240060) 

- $webservergroup now defaults to group 'apache' in new installations (bug
  224477)

- Correct a situation where a bugmail message could be sent twice to a user
  being added to the CC list if the address was entered in a different case
  than the user registered with.  (bug 117297)

- Various documentation updates

*********************************************************
*** USERS UPGRADING FROM ALL VERSIONS PRIOR TO 2.16.4 ***
*********************************************************

*** Bug fixes of note ***

- Fix a "used only once" warning that ocurred only in perl 5.00503
  (bug 2321691)

- When a user is creating a new account and enters an invalid email
  address, the error page sent the "Content-type" header twice, causing
  the second one to be visible at the top of the page.
  (bug 137121)

- An HTML encoding issue which only affected Internet Explorer was
  corrected in the "Change several bugs at once" page.
  (bug 181106)
 
- During initial setup, using invalid characters in the administrator
  password would present an error message stating your password was
  too long or too short instead of telling you it had invalid
  characters.
  (bug 166755)

- When a user reset their own password via an emailed token, the new
  password in the first field would be accepted if the second password
  field was left blank.
  (bug 123077)

- Reopening bugs from the "change several bugs at once" page now works.
  (bug 95430)

- Fix a regression in xml.cgi caused by the previous bugfix for MySQL
  SUM() changes.  The original fix didn't work properly either.
  (bug 225474)

- No longer use server push with the "Safari" browser, which claims to
  use the Mozilla layout engine but doesn't.
  (bug 188712)

- Creating a shadow database no longer fails with taint mode errors.
  (bug 227510)
  
- If you change your cookiepath setting at some stage (because you have
  moved the directory Bugzilla resides on your webserver), users can
  have login cookies with the old cookiepath, and their browsers will
  send multiple logincookies.  Bugzilla now uses the first rather than
  the last in order to get the most specific cookie which will be the
  correct one.
  (bug 121419)	
  
- Fixed a regression caused by the previous DBD::mysql fixes, that
  caused older versions of DBD::mysql to break due to not supporting
  the new DBI syntax.
  (bug 224815)

- Bugzilla no longer sends out invalid dates for cookie expiry.  This
  bug had no known user visible ramifications.
  (bug 228706)
  
- Update the shadow database parameters description to tell the user
  about permissions requirements for creating a shadow database.
  (bug 227513)

- Various documentation updates.

*********************************************************
*** USERS UPGRADING FROM ALL VERSIONS PRIOR TO 2.16.3 ***
*********************************************************

*** SECURITY ISSUES RESOLVED ***

- A user with 'editproducts' privileges (i.e. usually an administrator)
  can select arbitrary SQL to be run by the nightly statistics cron job
  (collectstats.pl), by giving a product a special name.
  (bug 214290)

- A user with 'editkeywords' privileges (i.e. usually an administrator)
  can inject arbitrary SQL via the URL used to edit an existing keyword.
  (bug 219044)

- When deleting products and the 'usebuggroups' parameter is on, the
  privilege which allows someone to add people to the group which is
  being deleted does not get removed, allowing people with that
  privilege to get that privilege for the next group that is created
  which reuses that group ID.  Note that this only allows someone who
  had been granted privileges in the past to retain them.
  (bug 219690)

- If you know the email address of someone who has voted on a secure
  bug, you can access the summary of that bug even if you do not have
  sufficient permissions to view the bug itself.
  (bug 209376)

*** Bug fixes of note ***

Perl 5.8.0 Compatibility fixes:

- Two taint errors were fixed, one in process_bug.cgi, and 
  another in post_bug.cgi.
  (bugs 220332 and 177828)

MySQL 4.0 Compatibility fixes:

- A cosmetic fix was applied to votes.cgi (if there were no 
  votes, the "0" was not displayed) due to a change in semantics 
  in SUM() in MySQL 4.0.
  (bug 217422)

DBD::mysql > 2.1026 Compatibility fixes:

- DBD::mysql versions after 2.1026 return the table list quoted, which
  broke the existing "table exists" check in checksetup.pl, which caused
  the second and subsequent attempts to run checksetup.pl to fail.
  (bug 212095) 

Miscellaneous bug fixes:

- A Mozilla-specific reference was removed from one of the report
  templates.
  (bug 221626)

- It was possible to enter a situation where you were unable to get to
  editparams.cgi to turn the shutdownhtml param back off after you
  turned it on when Apache was configured to run Bugzilla in suexec
  mode.
  (bug 213384)
  
- The processmail rescanall task would not send e-mails about more than
  one bug to the same address.
  (bug 219508)

- If Bugzilla hadn't been accessed in the last hour when the
  collectstats.pl or whineatnews.pl cron jobs ran, the versioncache
  would get recreated with the file owner being the user the cron job
  was running as (usually not the webserver user), causing subsequent
  access to Bugzilla by the webserver to fail until the permissions were
  fixed. Now if versioncache isn't readable when accessing from the
  webserver, we pretend it doesn't exist and recreate it again.
  (bug 160422)

- The 'sendmailnow' param is now on by default in new installations
  (this does not affect existing installations).
  (bug 146087)

- The 008filter.t test would fail if you had multiple language packs
  installed. It now properly tests all of the installed language packs.
  (bug 203318)

- A few minor documentation changes were committed.

*********************************************************
*** USERS UPGRADING FROM ALL VERSIONS PRIOR TO 2.16.2 ***
*********************************************************

*** SECURITY ISSUES RESOLVED ***

- A cross site scripting (XSS) vulnerability was fixed in which bug 
  summaries were not properly filtered when a user viewed a dependency graph 
  allowing JavaScript to be embedded on that page.
  (bug 192661)
  
- Several XSS vulnerabilities were fixed in which user
  input was not escaped when being displayed. A new 
  test has been added to warn about unfiltered data in template
  files (t/008filter.t).
  (bug 192677)

- An issue was fixed in which the QA contact was still treated as the QA
  contact even after the 'useqacontact' setting was turned off. This also
  allowed the QA contact to edit the security groups and view secured bugs that
  he/she was allowed to access prior to the 'useqacontact' setting being
  deactivated.
  (bug 194394)
  
- Fixed a situation where an attacker (with local access to the webserver)
  could overwrite any file on the webserver to which the webserver user
  has write access by creating appropriately named symbolic links in the
  data and webdot directories (world-writable in many configurations).
  Bugzilla now uses File::Temp to create secure temporary files.  File::Temp
  is part of the Perl distribution for Perl 5.6.1 and later, but if you're
  using an older version of Perl you'll need to install it with CPAN.
  (bug 197153)

** IMPORTANT CHANGES ***

- New module requirement: File::Temp, as mentioned above.

*** Bug fixes of note ***

- An issue was fixed in which administrator rights could be removed from an
  administrator who deleted a product while the 'usebuggroups' setting is
  activated.
  (bug 157704) 
  
- Fixed an issue in which importxml.pl would fail the test suite when running
  under perl 5.8.0 with the optional XML::Parse module. 
  (bug 172331)
  
- There was previously a bug in CGI.pl in which the following warning 
  would be given under certain conditions: 
  "Character in "c" format wrapped at CGI.pl..." 
  This is now fixed. In some cases the warning was filling up web server log
  files.
  (bug 194125)
  
- Fixed a bug in which long component names (in excess of 50 characters) would
  be accepted when creating the component but would cause problems when trying
  to use that component on a bug because it would get truncated. It is now no
  longer possible to create components with names in excess of 50 characters. 
  (bug 197180)
  
- Fixed a bug in checksetup.pl in which permissions were not being fixed 
  on the 'data/comments' file, the quip file. 
  (bug 160279)

*****************************************************************
*** USERS UPGRADING FROM 2.16.1 OR EARLIER, 2.14.4 OR EARLIER ***
*****************************************************************

*** SECURITY ISSUES RESOLVED ***

- Fixed a cross site scriptability issue in quips.  This is only a problem
  if quips with HTML could have been inserted into your quips files.  Bugzilla
  has not allowed this since 2.12.
  (bug 179329)
- checksetup.pl will now attempt to prevent access to "editor backups" of
  localconfig.
  (bug 186383)
- collectstats.pl no longer makes data/mining (which contains graphing
  information) world writeable.
  (bug 183188)

***********************************************
*** USERS UPGRADING FROM 2.16.0 OR EARLIER  ***
***********************************************

*** SECURITY ISSUES RESOLVED ***

- Apostrophes were not properly handled in email addresses.  This was a
  regression introduced in 2.16.  It is not known whether this was
  exploitable.
  (bug 165221)

See also next major section.

*** Bug fixes of note ***

- The VERSION cookie which allowed the previously entered version of a product
  to be remembered was not correctly set.  It was only set as a session
  cookie, and under some circumstances could interfere with other cookies
  (such as the login information) send at the same time.
  (bug 160227)

- importxml.pl would fail if the versioncache needed to be updated.
  (bug 164464)

- Bug changes going through intermediate pages would munge fields with
  multiple fields, such as CCs.
  (bug 161203)

- On failure in template->new, Bugzilla will now die rather than futilely
  attempt to use an error template.
  (bug 166023)

- Fixed a problem where checksetup had problems converting old installations
  that didn't have a duplicates table.
  (bug 151619)

- Fixed a problem that caused taint errors when viewing or editing user
  preferences with Perl 5.005 and Template 2.08.
  (bug 160710)

See also next section.

******************************************************
*** USERS UPGRADING FROM 2.16.0, 2.14.3 OR EARLIER ***
******************************************************

*** SECURITY ISSUES RESOLVED ***

- When a new product is added to an installation with 47 groups or more and
  "usebuggroups" is enabled, the new group will be assigned a groupset bit
  using Perl math that is not exact beyond 2^48.  This results in the new
  group being defined with a "bit" that has several bits set.  As users are
  given access to the new group, those users will also gain access to
  spurious lower group privileges.  Also, group bits were not always reused
  when groups were deleted.
  (bug 167485)

- The email interface had another insecure single parameter system call.  This
  could potentially allow arbitrary shell commands to be run.  This file is
  not supported at this time, but as long as we knew about the problem, we
  couldn't overlook it.
  (bug 163024)

*** Bug fixes of note ***

- The email interface was broken.  This was a 2.14.3 regression.  This file
  is not supported at this time, but as long as we knew about the problem, we
  couldn't overlook it.
  (bug 160631)

***********************************************
*** USERS UPGRADING FROM 2.14.5 OR EARLIER  ***
***********************************************

*** SECURITY ISSUES RESOLVED ***

- The bug reporter could set the priority even when
  'letsubmitterchoosepriority' was off.
  (bug 63018)

- Most CGIs are now templatized.  This helps to make it
  easier to remember to HTML filter values and easier to spot
  when they are not, preventing cross site scripting attacks.
  (bug 86168)

- Most CGIs now run in taint mode.  This helps to prevent
  failure to validate errors.
  (bug 108982)

*** IMPORTANT CHANGES ***

- 2.16 introduces "templatization", a new feature that allows
  administrators to easily customize the HTML output (the "look and feel")
  of Bugzilla without altering Perl code.  Bugzilla uses the
  "Template Toolkit" for this.  Please see the "Template Customization"
  section of the Bugzilla Guide for more details.

  Administrators who ran the 2.15 development version with custom
  templates should check the templates are still valid, as file names
  and file paths have changed.

  Most output is now templatized.  This process will be complete next
  milestone.

  For speed, compiled templates are cached on disk.  If you modify the
  templates, the toolkit will normally detect the changes, and recompile the
  changed templates.

  Adding new directories anywhere inside the template directory may cause 
  permission errors if you don't have a webservergroup specified in
  localconfig.  If you see these, rerun checksetup.pl as root.  If you do not
  have root access, or cannot get someone who does to do this for you, you can
  rename the data/template directory to data/template.old (or any other name
  Bugzilla doesn't use).  Then rerun checksetup.pl to regenerate the compiled
  templates.
  (bug 86168, 97832)

- Administrators can now configure maximum attachment sizes.  These
  should remain below the maximum size for your MySQL server, or you
  will get obscure MySQL errors if you attach a bigger attachment.

  To find out the current size attachment that MySQL can accept, type
  the command 'mysqladmin variables' and find out the value of the
  'max_allowed_packet' varible in bytes.

  To change the maximum size that MySQL can accept you can alter this
  variable in your 'my.cnf' file.
  (bug 91664)

- Perl 5.004 is no longer supported because the Template Toolkit
  requires 5.005.
  (bug 97721)

- New module requirements: Text::Wrap, Template [requires AppConfig],
                           File::Spec.
  (bugs 97784, 84338, 103778)

- The index page is now a CGI instead of an HTML page.  You should remove
  any existing index.html file and make sure your web server allows index.cgi
  to be the default page in a directory.  If you are not able to do that you
  can instead set index_html in the 'localconfig' file to 1 and checksetup.pl
  will create a redirect page for you.
  (bug 80183)

- It is now recommended that administrators run "processmail rescanall"
  after upgrading to 2.16 or beyond.

  This will send out notification emails for changes that were
  made but not emailed, due to Bugzilla bugs.  All known
  causes of this have been fixed in this version (bug 104589 and 99519).

  It is also recommended that this be run nightly to avoid
  lengthy delays in future if this problem reoccurs.
  (bug 106377)

- In parallel with templatization, a lot of changes have been made to the HTML
  output of the Bugzilla CGIs.  This could break code that attempts to parse
  such code.  For example, this breaks mozbot.
  (no bug number)

- The "HTML template" parameters (headerhtml, bodyhtml, footerhtml,
  errorhtml, bannerhtml, blurbhtml, mostfreqhtml, entryheaderhtml) have now
  been moved to Template Toolkit templates.  If you have modified these
  parameters you will need to make corresponding changes to the corresponding
  templates.  Your old parameter values will be moved to a file called
  old-params.txt by checksetup.pl.

  The old parameters correspond to files in template/en/default as follows:

  headerhtml:      global/header.html.tmpl
  footerhtml:      global/footer.html.tmpl
  bannerhtml:      global/banner.html.tmpl
  blurbhtml:       global/banner.html.tmpl
  mostfreqhtml:    reports/duplicates*.html.tmpl
  entryheaderhtml: bug/create/user-message.html.tmpl

  (bug 140437)

*** Other changes of note ***

- The query page has been redesigned for better user friendliness.
  (bug 98707)
- Users can now change their email account.
  (bug 23067)
- "Dependent Bug Changed" notification emails now contain the
  dependent bug's summary and URL.
  (bug 28736, 113383)
- Bugs with severity "critical", "blocker", and "enhancement" are
  visually differentiated on bug lists for browsers with sufficient
  CSS support.
  (bug 28884)
- Bugzilla now has a sidebar for the Mozilla browser.
  (bug 37339)
- A link to just created attachments now appears in notification
  email.
  (bug 66651)
- Comments now have numbers and can be referenced with
  autohyperlinkifying similar to bugs.
  (bug 71840)
- The attachment system has been rewritten, supporting new
  "attachment statuses" (like keywords, but for attachments),
  the ability to obsolete attachments, edit attachment MIME type,
  and edit whether the attachment is a patch.
  (bugs 84338, 75176)
- syncshadowdb now supports a configurable temp file location,
  and properly shuts down Bugzilla while running.
  (bug 75840)
- Dependency tree now lets you exclude resolved bugs and bugs
  below a specified depth.
  (bugs 83058)
- The "strictvaluechecks" parameter has gone away.  These checks
  are now always done.
  (bug 119715)
- The midair collision page now shows all changes since the bug
  page was loaded, not just the last one.
  (bug 108312)
- Added support for making dependency graphs with 'dot', which
  is better at creating complex graphs than 'webdot'.
  (bug 120537)

*** Bug fixes of note ***

- Bugzilla scripts are now usually not terminated when the browser
  window they are running in is closed.  This caused hard to
  reproduce bugs.
  (bug 104589)
- On browsers that "reflow" the page, large component / milestone /
  version fields were extremely slow to reflow when you altered
  the product field.
  (bug 96534)
- The selection in the component / milestone / version fields is
  no longer lost when you change the selection in the product
  field or use the back/forward buttons in your browser to return
  to the page.
  (bug 97966)
- You could not reverse dependencies in one step.
  (bug 82143)
- Mass reassignment of non-open bugs will no longer reopen them.
  (bug 30731)
- Attempting to bulk change no bugs will now give a user-friendly
  error message.
  (bug 90333)
- If you make a change to a bug where you only add yourself to CC,
  email notifications are now properly sent out for MySQL 3.23.
  (bug 99519)
- Bug entry now properly validates the data it has been sent.
  (bug 107743)
- Midair collision checks will now properly work in all situations
  where dependencies have changed.
  (bug 73502)
- Browsers can no longer corrupt the params file if they use the "wrong"
  end-of-line markers.
  (bug 92500)
- The MySQL port defined in localconfig is now properly honoured.
  (bug 98368)
- Apostrophes in component/milestone/version names no longer cause
  a problem on the query page.
  (bug 30689/42810)
- File attachment comments will now wrap.
  (bug 52060)
- Saved queries are no longer mangled if you need to log in again,
  for example if you had cookies off.
  (bug 38835)
- Bug counts (on reports.cgi) were very slow if you had to
  count a lot of bugs.
  (bug 63249)
- 2.14 introduced options to let people see a bug when their name
  is on it but who aren't in the groups the bug is restricted
  to.  These only allowed the people to view the bugs directly,
  and not see them on buglists and receive email about them.
  (bugs 95024, 97469)
- A new 'cookiepath' parameter on editparams.cgi allows multiple
  Bugzilla installations to exist on one host without problems.
  (bug 19910)
- whineatnews.pl now respects the 'sendmailnow' parameter.
  (bug 52782)
- The query page came up even when Bugzilla was shut down.
  (bug 121747)
- Quicksearch gave a weird error message when Bugzilla was
  shut down.
  (bug 121741)
- Operating system detection fixes.
  (bugs 92763, 135666)
- QA contacts now receive emails when a new bug is created and
  their only email preference was being added or removed from QA.
  (bug 143091)

***********************************************
*** USERS UPGRADING FROM 2.14.4 OR EARLIER  ***
***********************************************

See section above about users upgrading from 2.16.1 or earlier,
2.14.4 or earlier.

***********************************************
*** USERS UPGRADING FROM 2.14.3 OR EARLIER  ***
***********************************************

See section above about users upgrading from 2.16.0 or earlier.

***********************************************
*** USERS UPGRADING FROM 2.14.2 OR EARLIER  ***
***********************************************

*** SECURITY ISSUES RESOLVED ***

- Basic maintenance on contrib/bug_email.pl and
  contrib/bugzilla_email_append.pl which also fixes a
  possible security hole with a misuse of a system() call.
  These files are not supported at this time, but as long
  as we knew about the problem, we couldn't overlook it.
  (bug 154008)

*** Bug fixes of note ***

- The fix for bug 130821 in 2.14.2 broke being able to sort
  bug lists on more than one field.  buglist.cgi now allows
  you to sort on more than one field again.
  (bug 152138)

***********************************************
*** USERS UPGRADING FROM 2.14.1 OR EARLIER  ***
***********************************************

*** SECURITY ISSUES RESOLVED ***

- queryhelp.cgi no longer shows confidential products to
  people it shouldn't.
  (bug 126801)

- It was possible for a user to bypass the IP check by
  setting up a fake reverse DNS, if the Bugzilla web server
  was configured to do reverse DNS lookups.  Apache is not
  configured as such by default.  This is not a complete
  exploit, as the user's login cookie would also need to
  be divulged for this to be a problem.
  (bug 129466)

- In some situations the data directory became world writeable.
  (bug 134575)

- Any user with access to editusers.cgi could delete a user
  regardless of whether 'allowuserdeletion' is on.
  (bug 141557)

- Real names were not HTML filtered, causing possible cross
  site scripting attacks.
  (bug 146447, 147486)

- Mass change would set the groupset of every bug to be the
  groupset of the first bug.
  (bug 107718)

- Some browsers (eg NetPositive) interacted with Bugzilla
  badly and could have various form problems, including
  removing group restrictions on bugs.
  (bug 148674)

- It was possible for random confidential information to be
  divulged, if the shadow database was in use and became
  corrupted.
  (bug 92263)

- The bug list sort order is now stricter about the SQL it will accept,
  ensuring you use correct column name syntax.  Before this, there were
  some syntax checks, so it is not known whether this problem was
  exploitable.
  (bug 130821)

********************************************
*** USERS UPGRADING FROM 2.14 OR EARLIER ***
********************************************

The 2.14.1 release fixes several security issues that became
known to us after the Bugzilla 2.14 release.

*** SECURITY ISSUES RESOLVED ***

- If LDAP Authentication was being used, Bugzilla would allow
  you to log in as anyone if you left the password blank.
  (bug 54901)

- It was possible to add comments or file a bug as someone else
  by editing the HTML on the appropriate submission page before
  submitting the form.  User identity is checked now, and the
  form values suggesting the user are now ignored.
  (bug 108385, 108516)

- The Product popup menu on the show_bug form listed all
  products, even if the user didn't have access to all of them.
  It now only shows products the user has access to (and the
  product the bug is in, if the user is viewing it because of
  some other override).
  (bug 102141)

- If a user had any blessgroupset privileges (the ability to
  change only specific privileges for other users), it was
  possible to change your own groupset (privileges) by
  altering the page HTML before submitting on editusers.cgi.
  (bug 108821)

- An untrusted variable was echoed back to user in the HTML
  output if there was a login error while editing votes.
  (bug 98146)

- buglist.cgi had an undocumented parameter that allowed you
  to pass arbitrary SQL for the "WHERE" part of a query.
  This has been disabled.
  (bug 108812)

- It was possible for a user to send arbitrary SQL by inserting
  single quotes in the "mybugslink" field in the user
  preferences.
  (bug 108822)

- buglist.cgi was not validating that the field names being
  passed from the "boolean chart" query form were valid field
  names, thus allowing arbitrary SQL to be inserted if you 
  edited the HTML by hand before submitting the form.
  (bug 109679)

- long_list.cgi was not validating that the bug ID parameter
  was actually a number, allowing arbitrary SQL to be inserted
  if you edited the HTML by hand.
  (bug 109690)

********************************************
*** USERS UPGRADING FROM 2.12 OR EARLIER ***
********************************************

*** SECURITY ISSUES RESOLVED ***

- Multiple instances of unauthorized access to confidential
  bugs have been fixed.
  (bug 39524, 39526, 39527, 39531, 39533, 70189, 82781)

- Multiple instances of untrusted parameters not being
  checked/escaped was fixed.  These included definite security
  holes.
  (bug 38854, 38855, 38859, 39536, 87701, 95235)

- After logging in passwords no longer appear in the URL.
  (bug 15980)

- Procedures to prevent unauthorized access to confidential
  files are now simpler.  In particular the shadow directory
  no longer exists and the data/comments file no longer needs
  to be directly accessible, so the entire data directory can
  be blocked.  However, no changes are required here if you
  have a properly secured 2.12 installation as no new files
  must be protected.
  (bug 71552, 73191)

- If they do not already exist, checksetup.pl will attempt to
  write Apache .htaccess files by default, to prevent
  unauthorized access to confidential files.  You can turn this
  off in the localconfig file.
  (bug 76154)

- Sanity check can now only be run by people in the 'editbugs'
  group.  Although it would be better to have a separate
  group, this is not possible until the limitation on the
  number of groups allowed has been removed.
  (bug 54556)

- The password is no longer stored in plaintext form.  It will
  be eradicated next time you run checksetup.pl.  A user must
  now change their password via a password change request that
  gets validated at their e-mail account, rather than have it
  mailed to them.
  (bug 74032)

- When you are using product groups and you move a bug between
  products (single or mass change), the bug will no longer be
  restricted to the old product's group (if it was) and will
  be restricted to the new product's group.
  (bug 66235)

- There are now options on a bug to choose whether the
  reporter, and CCs can access a bug even if they aren't in
  groups the bug it is restricted to.
  (bug 39816)

- You can no longer mark a bug as a duplicate of a bug you
  can't see, and if you mark a bug a duplicate of a bug
  the reporter cannot see you will be given options as to
  what to do regarding adding the reporter of the resolved
  bug to the CC of the open bug.
  (bug 96085)

*** IMPORTANT CHANGES ***

- Bugzilla 2.14 no longer supports old email tech.  Upon
  upgrading, all users will be moved over to new email tech.
  This should speed up upgrading for installations with
  a large number of bugs.
  (bug 71552)

- There is new functionality for people to see why they are
  receiving notification mails.

  Previously, some people filtered old email tech
  notifications depending on whether they were in the To or the
  CC header, in order to get a limited way of determining why
  they were receiving the notification for filtering purposes.

  Existing installations will need to make changes to support
  this feature.  The receive reasons can be added to the
  notifications as a header and/or in the body.  To add these
  you will need to modify your newchangedmail parameter on
  editparams.cgi, either by resetting it or appropriately
  modifying it.  The header value is specified by
  %reasonsheader% and the body by %reasonsbody%.  For example,
  the new default parameter is:

  --------------------------------------------------
  From: bugzilla-daemon
  To: %to%
  Subject: [Bug %bugid%] %neworchanged%%summary%
  X-Bugzilla-Reason: %reasonsheader%

  %urlbase%show_bug.cgi?id=%bugid%

  %diffs%



  %reasonsbody%
  --------------------------------------------------

  (bug 26194)

- Very long fields (especially multi-valued fields like keywords,
  CCs, dependencies) on bug activity and notifications previously
  could get truncated, resulting in useless notifications and data
  loss on bug activity.  Now the multi-valued fields only show
  changes, and very big changes are split into multiple lines.
  Where data loss has already occurred on bug activity, it is
  indicated using question marks.
  (bug 55161, 92266)

- Previously, when a product's voting preferences changed all
  votes were removed from all the bugs in the product.  Also,
  when a bug was moved to another product, all of its votes
  were removed.  This no longer occurs.

  Instead, if the action would leave one or more bugs with
  greater than the maximum number of votes per person per bug,
  the number of votes will be reduced to the maximum.  The
  person will still be notified of this as before.

  If the action would leave a user with more votes in a product
  than is allowed, the limit will be breached so as to not lose
  votes.  However the user will not be able to update their
  votes except to fix this situation.  No further action is taken
  in this version to make sure that the user does this.
  (bug 28882, 92593)

*** Other changes of note ***

- Groups can now be marked inactive, so you can't add a new
  restriction on that group to a bug, while leaving bugs that
  were previously restricted on that group alone.
  (bug 75482)
- backdoor.cgi has been removed from the installation.  It was
  old code that was Netscape-specific and its name was scaring
  people.
  (bug 87983)
- You can now add or remove from CC on the bulk change page.
  (bug 12819)
- New users created by administrators are now automatically
  inserted into groups according to the group's regular
  expression.  Administrators must edit the user in a second
  step to override these choices.  Previously the
  administrator specified these explicitly which could lead
  to incorrect settings.
  (bug 45164)
- The userregexp of system groups can now be edited without
  resorting to direct database access.
  (bug 65290)

*** Bug fixes of note ***

- The bug list page was sometimes bringing up a not logged in
  footer when the user was logged in and the installation was
  using a shadow database.
  (bug 47914)
- You can now view the bug summary in your browser title for
  a group-restricted bug if you have proper permissions.
  (bug 71767)
- Quick search for search terms did not work in IE5.
  This has been worked around.
  (bug 77699)
- Quick search for search terms crashed NN4.76/4.77 for Unix.
  This has been worked around.
  (bug 83619)
- Queries on bugs you have commented on using the "added
  comment" feature should be a lot faster and not time out
  on large installations due to the addition of an index.
  (bug 57350)
- You can now alter group settings on bulk change for groups
  that aren't on for all bugs or off for all bugs.
  (bug 84714)
- New bug notifications now include the CC and QA fields.
  (bug 28458)
- Bugzilla is now more Windows friendly, although it is still
  not an official platform.
  (bug 88179, 29064)
- Passwords are now encrypted using Perl's encrypt function.
  This makes Bugzilla more portable to more operating systems.
  (bug 77473)
- Bugzilla didn't properly shut down when told to - some
  queries could still be sent to the database.
  (bug 95082)

********************************************
*** USERS UPGRADING FROM 2.10 OR EARLIER ***
********************************************

*** SECURITY ISSUES RESOLVED ***

- Some security holes have been fixed where shell escape characters
  could be passed to Bugzilla, allowing remote users to execute
  system commands on the web server.

*** IMPORTANT CHANGES ***

- There is now a facility for users to choose the sort of
  notifications they wish to receive.  This facility will
  probably be improved in future versions.
  (bug 17464)

- "Changed" will no longer appear on the subject line of
  change notification emails.  Because of this, you should
  change the subject line in your 'changedmail' and
  'newchangedmail' params on editparams.cgi.  The subject
  line needs to be changed from

    Subject: [Bug %bugid%] %neworchanged% - %summary%

  to:

    Subject: [Bug %bugid%] %neworchanged%%summary%

  or whatever is appropriate for the subject you are using
  on your system.  Note the removal of the " - " in the
  middle.
  (bug 29820)

*** Other changes of note ***

- Bug titles now appear in the page title, and will hence
  display in the user's browser's bookmarks and history.
  (bug 22041)
- Edit groups functionality (editgroups.cgi).
  (bug 25010)
- Support for moving bugs to other Bugzilla databases.
  (bug 36133)
- Bugzilla now can generate a frequently reported bugs list
  based on what duplicates you receive.
  (bug 25693)
- When installing Bugzilla fresh, the administrator account is
  now created in checksetup.pl.
  (bug 17773)
- Stored queries now show their name above the bug list, which
  helps the user when they have multiple bug lists in multiple
  browser windows.  It also appears in the page title, and will
  hence display in the user's browser's bookmarks and history.
  (bug 52228)
- All states and resolutions can now be collected for charting.
  (bug 6682)
- A new search-engine-like "quick search" feature appears on
  the front page to try and making searching easier.
  (bug 69793)
- Querying on dependencies now works in the advanced query
  section of the query page.
  (bug 30823)
- When a bug is marked as a duplicate, the reporter of the
  resolved bug is automatically added to the CC list of the
  open bug.
  (bug 28676)

*** Bug fixes of note ***

- Notification emails will now always be sent to QA contacts.
  Previously they wouldn't if you were using new email tech.
  (bug 30826)
- When marking a bug as a duplicate, the duplicate stamp marked
  on the open bug will no longer be written too early (such as
  on mid-air collisions).
  (bug 7873)
- Various bug fixes were made to the initial assignee and QA
  of a component.  It is no longer possible to enter an
  invalid address.  They will also now properly update when
  a user's email address is changed.  Sanity check will now
  check these.
  (bug 66876)
- Administrators can no longer create an email accounts that do
  not match the global email regular expression parameter.
  Previously this could occur and would cause sanity check
  errors.
  (bug 32971)
- The resolution field can no longer become empty when the
  bug is resolved.  This occurred because of midair collisions.
  (bug 49306)

*******************************************
*** USERS UPGRADING FROM 2.8 OR EARLIER ***
*******************************************

Release notes were not compiled for versions of Bugzilla before
2.12.

The file 'UPGRADING-pre-2.8' contains instructions you may
need to perform in addition to running 'checksetup.pl' if you
are running a pre 2.8 version.