summaryrefslogtreecommitdiffstats
path: root/scripts/mysqlaccess.sh
blob: c9b1b72dc21b2675806d0e95a51425426f3f5f3b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
#!@PERL_PATH@

# Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; version 2
# of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public
# License along with this library; if not, write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
# MA 02110-1335  USA

# ****************************
package MySQLaccess;
#use strict;
use File::Temp qw(tempfile tmpnam);
use Fcntl;

BEGIN {
	# ****************************
	# static information...
	$VERSION     = "2.10, 13 Sep 2019";
	$0           =~ m%/([^/]+)$%o;
	$script      = $1;
        $script      = 'MySQLAccess' unless $script;
	$script_conf = "$script.conf";
	$script_log  = $ENV{'HOME'}."/$script.log";

	# ****************************
	# information on MariaDB
	$MYSQL     = '@bindir@/mariadb';    # path to mariadb executable
	$SERVER    = '3.21';
	$MYSQL_OPT = ' --batch --unbuffered';
	$ACCESS_DB = 'mysql';		 # name of DB with grant-tables
	$ACCESS_H  = 'host';		 # 
	$ACCESS_U  = 'user';	         # 
	$ACCESS_D  = 'db';               #
	# Add/Edit privileges
	$ACCESS_H_TMP = 'host_tmp';      
	$ACCESS_U_TMP = 'user_tmp';      
	$ACCESS_D_TMP = 'db_tmp';        
	$ACCESS_H_BCK = 'host_backup';   
	$ACCESS_U_BCK = 'user_backup';   
	$ACCESS_D_BCK = 'db_backup';     
        $DIFF      = '/usr/bin/diff'; 
        $MYSQLDUMP = '@bindir@/mariadb-dump';
                                         #path to mariadb-dump executable

        $MYSQLADMIN= 'http://foobar.com/MySQLadmin';
                                         #URL of CGI for manipulating
                                         #the temporary grant-tables
}

END {
	unlink $MYSQL_CNF if defined $MYSQL_CNF and not $DEBUG;
}

$INFO = <<"_INFO";
--------------------------------------------------------------------------
   mysqlaccess (Version $VERSION)
   ~~~~~~~~~~~
   Copyright (C) 1997,1998 Yves.Carlier\@rug.ac.be
                           University of Ghent (RUG), Belgium
                           Administratieve Informatieverwerking (AIV)

   report the access-privileges for a USER from a HOST to a DB

   Many thanks go to <monty\@mysql.com> and <psmith\@BayNetworks.COM>
   for their suggestions, debugging and patches. 

   use `$script -?' to get more information on available options.

   From version 2.0x, $script can also be used through a WEB-browser
   if it is ran as a CGI-script.  (See the release-notes)

--------------------------------------------------------------------------
_INFO

$OPTIONS = <<_OPTIONS;

Usage: $script [host [user [db]]] OPTIONS

  -?, --help           display this helpscreen and exit
  -v, --version        print information on the program `$script'

  -u, --user=#         username for logging in to the db
  -p, --password=#     validate password for user
  -h, --host=#         name or IP-number of the host
  -d, --db=#           name of the database

  -U, --superuser=#    connect as superuser
  -P, --spassword=#    password for superuser
  -H, --rhost=#        remote MariaDB-server to connect to
      --old_server     connect to old MariaDB-server (before v3.21) which 
                       does not yet know how to handle full where clauses.

  -b, --brief          single-line tabular report
  -t, --table          report in table-format

  --relnotes           print release-notes
  --plan               print suggestions/ideas for future releases
  --howto              some examples of how to run `$script'
  --debug=N            enter debuglevel N (0..3)

  --copy               reload temporary grant-tables from original ones
  --preview            show differences in privileges after making
                       changes in (temporary) grant-tables
  --commit             copy grant-rules from temporary tables to grant-tables
                       (!don't forget to do an mysqladmin reload)
  --rollback           undo the last changes to the grant-tables.

  Note:
    At least the user and the db must be given (even with wildcards)
    If no host is given, `localhost' is assumed
    Wilcards (*,?,%,_) are allowed for host, user and db, but be sure 
    to escape them from your shell!! (ie type \\* or '*')
_OPTIONS

$RELEASE = <<'_RELEASE';
 
Release Notes:
-------------
  0.1-beta1: internal
  - first trial.
 
  0.1-beta2: (1997-02-27)
  - complete rewrite of the granting-rules, based on the documentation
    found in de FAQ.
  - IP-number and name for a host are equiv.
 
  0.1-beta3: (1997-03-10)
  - more information
  - 'localhost' and the name/ip of the local machine are now equiv.

  0.1-beta4: (1997-03-11)
  - inform the user if he has not enough priv. to read the mysql db

  1.0-beta1: (1997-03-12)
  suggestions by Monty:
  - connect as superuser with superpassword.
  - mysqlaccess could also notice if all tables are empty. This means
    that all user have full access!
  - It would be nice if one could optionally start mysqlaccess without
    any options just the arguments 'user db' or 'host user db', where
    host is 'localhost' if one uses only two arguments.

  1.0-beta2: (1997-03-14)
  - bugfix: translation to reg.expr of \_ and \%.
  - bugfix: error in matching regular expression and string given
            by user which resulted in
            'test_123' being matched with 'test'

  1.0-beta3: (1997-03-14)
  - bugfix: the user-field should not be treated as a sql-regexpr,
            but as a plain string.
  - bugfix: the host-table should not be used if the host isn't empty in db
                                          or  if the host isn't emty in user
            (Monty)
 
  1.0-beta4: (1997-03-14)
  - bugfix: in an expression "$i = $j or $k", the '=' binds tighter than the or
            which results in problems...
            (by Monty)
  - running mysqlaccess with "perl -w" gives less warnings...   ;-)

  1.0-beta5: (1997-04-04)
  - bugfix: The table sorting was only being applied to the "user" table; all
            the tables need to be sorted.  Rewrote the sort algorithm, and
            the table walk algorithm (no temp file anymore), and various
            other cleanups.  I believe the access calculation is 100% correct.
            (by Paul D. Smith <psmith\@baynetworks.com>)
  - Allow the debug level to be set on the cmd line with --debug=N.
            (by Paul D. Smith <psmith\@baynetworks.com>)
  - More -w cleanups; should be totally -w-clean.
            (by Paul D. Smith <psmith\@baynetworks.com>)
 
  1.1-beta1: (1997-04-xx) 
  1.1-beta2: (1997-04-11)
  - new options:
             --all_users : report access-rights for all possible users
             --all_dbs   : report access-rights for all possible dbs
             --all_hosts : report access-rights for all possible hosts
             --brief     : as brief as possible, don't mention notes,warnings and rules
             --password  : validate password for user 
  - layout: long messages are wrapped on the report.
  - functionality:
            more descriptive notes and warnings
            wildcards (*,?) are allowed in the user,host and db options
            setting xxxx=* is equiv to using option --all_xxxx
            note: make sure you escape your wildcards, so they don't get
                  interpreted by the shell.  use \* or '*'
  - bugfix: Fieldnames which should be skipped on the output can now have
            a first capital letter.
  - bugfix: any option with a '.' (eg ip-number) was interpreted as
            a wildcard-expression.
  - bugfix: When no entry was found in the db-table, the default accessrights are
            N, instead of the faulty Y in a previous version.
 
  1.1-beta-3  : (1997-04-xx)
  1.1-beta-4  : (1997-04-xx)
  1.1-beta-5  : (1997-04-xx)
  1.1         : (1997-04-28)
  - new options:
            --rhost     : name of mysql-server to connect to
            --plan      : print suggestions/ideas for future releases
            --relnotes  : display release-notes
            --howto     : display examples on how to use mysqlaccess
            --brief     : single-line tabular output
  - functionality/bugfix:
    *      removed options --all_users,--all_dbs,--all_hosts, which 
           were redundant with the wildcard-expressions for the corresponding
           options. They made the processing of the commandline too painful 
           and confusing ;-)
           (suggested by psmith)
    *      redefined the option --brief, which now gives a single-line 
           tabular output
    *      Now we check if the right version of the mysql-client is used,
           since we might use an option not yet implemented in an
           older version (--unbuffered, since 3.0.18)
           Also the error-messages the mysql-client reports are 
           better interpreted ;-)  
    *      Wildcards can now be given following the SQL-expression 
           (%,_) and the Regular-expression (*,?) syntax.
  - speed: we now open a bidirectional pipe to the mysql-client, and keep 
           it open throughout the whole run. Queries are written to,
           and the answers read from the pipe.
           (suggested by monty)
  - bugfixes:
    *      the Rules were not properly reset over iterations 
    *      when in different tables the field-names were not identical, 
           eg. Select_priv and select_priv, they were considered as 
           definitions of 2 different access-rights.
    *      the IP-number of a host with a name containing wildcards should
           not be searched for in Name2IP and IP2Name.
    *      various other small things, pointed out by <monty> and <psmith>

  1.2         : (1997-05-13)
  - bugfix:
    * Fixed bug in acl with anonymous user:  Now if one gets accepted by the
      user table as a empty user name, the user name is set to '' when 
      checking against the 'db' and 'host' tables. (Bug fixed in MySQL3.20.19)

  1.2-1       : (1997-xx-xx)
  - bugfix:
    * hashes should  be initialized with () instead of {} <psmith>
    * "my" variable $name masks earlier declaration in same scope,
      using perl 5.004 <????>

  1.2-2       : (1997-06-10)
    
  2.0p1-3     : (1997-10-xx)
  - new
    * packages
    * log-file for debug-output : /tmp/mysqlaccess.log
    * default values are read from a configuration file $script.conf
      first this file is looked for in the current directory; if not
      found it is looked for in @sysconfdir@
      Note that when default-values are given, these can't get overridden
      by empty (blanc) values!
    * CGI-BIN version with HTML and forms interface.  Simply place the
      script in an ScriptAliased directory, make the configuration file
      available in the that directory or in @sysconfdir@, and point your browser
      to the right URL. 
    * copy the grant-rules to temporary tables, where you are safe to
      play with them.
    * preview changes in privileges after changing grant-rules,
      before taking them into production
    * copy the new grant-rules from the temporary tables back to the
      grant-tables.
    * Undo all changes made in the grant-tables (1-level undo).
  -new options:
    * --table   : as opposite of the --brief option.
    * --copy    : (re)load temporary grant-tables from original ones.
    * --preview : preview changes in privileges after changing
                  some or more entries in the grant-tables.
    * --commit  : copy grant-rules from temporary tables to grant-tables
                  (!don't forget to do an mysqladmin reload)
    * --rollback: undo the last changes to the grant-tables.

  - bugfix:
    * if the table db is empty, mysqlaccess freezed 
      (by X Zhu <X.Zhu@Bradford.ac.uk>)

  2.0         : (1997-10-09)
  - fixed some "-w" warnings.
  - complain when certain programs and paths can't be found.

  2.01        : (1997-12-12)
  - bugfix:
    * rules for db-table where not calculated and reported correctly.
  2.02        : (1998-01-xx)
  - bugfix:
    * Privileges of the user-table were not AND-ed properly with the
      other privileges. (reported by monty)
  - new option:
    * --old_server: mysqlaccess will now use a full where clause when
                    retrieving information from the MySQL-server.  If
                    you are connecting to an old server (before v3.21)
                    then use the option --old_server.
  2.03         : (1998-02-27)
  - bugfix:
    * in Host::MatchTemplate: incorrect match if host-field was left empty.

  2.04-alpha1  : (2000-02-11)
  Closes vulnerability due to former implementation requiring passwords
  to be passed on the command line.
  - functionality
    Option values for --password -p -spassword -P  may now be omitted from
    command line, in which case the values will be prompted for.
      (fix supplied by Steve Harvey <sgh@vex.net>)

   2.05: (2000-02-17)   Monty
   Moved the log file from /tmp to ~

   2.06:  Don't print '+++USING FULL WHERE CLAUSE+++'

_RELEASE

$TODO = <<_TODO;

 Plans:
 -----
  -a full where clause is use now.  How can we handle older servers?
  -add some more functionality for DNS.
  -select the warnings more carefuly.
  >>  I think that the warnings should either be enhanced to _really_
  >>  understand and report real problems accurately, or restricted to
  >>  only printing things that it knows with 100% certainty. <psmith)
  >>  Why do I have both '%' and 'any_other_host' in there?  Isn't that
  >>  the same thing?  I think it's because I have an actual host '%' in
  >>  one of my tables.  Probably the script should catch that and not
  >>  duplicate output. <psmith>

_TODO

# From the FAQ: the Grant-algorithm
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# The host table is mainly to maintain a list of "secure" servers.
# At TCX hosts contain a list of all machines on local network. These are granted
# all privileges.
# Technically the user grant is calculated by:
#
#    1.First sort all entries by host by putting host without wildcards first,
#      after this host with wildcards and entries with host = ".
#      Under each host sort user by the same criterias.
#    2.Get grant for user from the "db" table.
#    3.If hostname is "empty" for the found entry, AND the privileges with
#      the privileges for the host in "host" table.
#      (Remove all which is not "Y" in both)
#    4.OR (add) the privileges for the user from the "user" table.
#     (add all privileges which is "Y" in "user")
#
#    When matching, use the first found match.
#
# -----------------------------------------------------------------------------------

$HOWTO = <<_HOWTO;

Examples of how to call $script:
~~~~~~~~
1)Calling $script with 2 arguments:

  \$ $script root mysql
     ->report rights of user root logged on at the local host in db mysql

  Access-rights
  for USER 'root', from HOST 'localhost', to DB 'mysql'
          +-----------------+---+ +-----------------+---+
          | select_priv     | Y | | drop_priv       | Y |
          | insert_priv     | Y | | reload_priv     | Y |
          | update_priv     | Y | | shutdown_priv   | Y |
          | delete_priv     | Y | | process_priv    | Y |
          | create_priv     | Y | | file_priv       | Y |
          +-----------------+---+ +-----------------+---+
  BEWARE:  Everybody can access your DB as user 'root'
        :  WITHOUT supplying a password.  Be very careful about it!!

  The following rules are used:
   db    : 'No matching rule'
   host  : 'Not processed: host-field is not empty in db-table.'
   user  : 'localhost','root','','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y'

2)Calling $script with 3 arguments:

  \$ $script foo.bar nobody Foo 
     ->report rights of user root logged in at machine foobar to db Foo

  Access-rights
  for USER 'nobody', from HOST 'foo.bar', to DB 'Foo'
          +-----------------+---+ +-----------------+---+
          | select_priv     | Y | | drop_priv       | N |
          | insert_priv     | Y | | reload_priv     | N |
          | update_priv     | Y | | shutdown_priv   | N |
          | delete_priv     | Y | | process_priv    | N |
          | create_priv     | N | | file_priv       | N |
          +-----------------+---+ +-----------------+---+
  BEWARE:  Everybody can access your DB as user 'nobody'
        :  WITHOUT supplying a password.  Be very careful about it!!

  The following rules are used:
   db    : 'foo.bar','Foo','nobody','Y','Y','Y','N','N','N'
   host  : 'Not processed: host-field is not empty in db-table.'
   user  : 'foo.bar','nobody','','N','N','N','Y','N','N','N','N','N','N'

3)Using wildcards:

  \$ $script  \\* nobody Foo --brief
     ->report access-rights of user nobody from all machines to db Foo,
       and use a matrix-report.

  Sel  Ins  Upd  Del  Crea Drop Reld Shut Proc File Host,User,DB        
  ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- --------------------
   Y    Y    Y    Y    N    N    N    N    N    N   localhost,nobody,Foo
   N    N    N    N    N    N    N    N    N    N   %,nobody,Foo  
   N    N    N    N    N    N    N    N    N    N   any_other_host,nobody,Foo

_HOWTO


# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ #
#                       START OF THE PROGRAM                            #
# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ #

use Getopt::Long;
use Sys::Hostname;
use IPC::Open3;


# ****************************
# debugging flag
# can be set to 0,1,2,3
# a higher value gives more info
# ! this can also be set on the command-line
	$DEBUG   = 0;

# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++>8
#  Normally nothing should be changed beneeth this line


# ****************************
# no caching on STDOUT
	$|=1;

	$MYSQL_CNF = tmpnam();
	%MYSQL_CNF = (client    => { },
                      mysql     => { },
                      mysqldump => { },
	);



$NEW_USER = 'ANY_NEW_USER';
$NEW_DB   = 'ANY_NEW_DB'  ;


# %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% #
#  mysqlaccess:                                              #
#  ~~~~~~~~~~~                                               #
#  Lets get to it,                                           #
#  and start the program by processing the parameters        #
# %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% #

($CMD,$CGI) = GetMode();

# ****************************
# the copyright message should
# always be printed (once)
MySQLaccess::Report::Print_Header();

# *****************************
# Read configuration-file
  MySQLaccess::Debug::Print(1, "Reading configuration file...");
  if (-f "@sysconfdir@/$script_conf") {
     print "Configuration file '$script_conf' is found in '@sysconfdir@/'\n";
     require "@sysconfdir@/$script_conf";
  }
  elsif (-f "@prefix@/$script_conf") {
     print "Configuration file '$script_conf' is found in '@prefix@/'\n";
     require "@prefix@/$script_conf";
  }
  elsif (-f "./$script_conf") {
     print "\nERROR! Configuration file '$script_conf' is found in the current ";
     print "directory.\nThe permissible locations for this file are either ";
     print "@sysconfdir@/ or @prefix@/\n";
     print "Please move it to one of these locations and retry.\n\n";
     exit 0;
  }


# ****************************
# Read in all parameters
if ($MySQLaccess::CMD) { #command-line version
	# ----------------------------
	# Get options from commandline
	$Getopt::Long::ignorecase=0; #case sensitive options
	if ( grep(/\-\?/,@ARGV) ) { MySQLaccess::Report::Print_Usage(); exit 0; }
	GetOptions("help"          => \$Param{'help'}
	          ,"host|h=s"      => \$Param{'host'}
	          ,"user|u=s"      => \$Param{'user'}
	          ,"password|p:s"  => \$Param{'password'}
	          ,"db|d=s"        => \$Param{'db'}
	          ,"superuser|U=s" => \$Param{'superuser'}
	          ,"spassword|P:s" => \$Param{'spassword'}
	          ,"rhost|H=s"     => \$Param{'rhost'}
                  ,"old_server"    => \$Param{'old_server'}
	          ,"debug=i"       => \$Param{'DEBUG'}
	          ,"brief|b"       => \$Param{'brief'}
	          ,"table|t"       => \$Param{'table'}
	          ,"relnotes"      => \$Param{'relnotes'}
	          ,"plan"          => \$Param{'plan'}
	          ,"howto"         => \$Param{'howto'}
	          ,"version|v"     => \$Param{'version'}
                  ,"preview"       => \$Param{'preview'}
                  ,"copy"          => \$Param{'copy'}
                  ,"commit"        => \$Param{'commit'}
                  ,'rollback'      => \$Param{'rollback'}
		  );

        # -----------------------------
        # set DEBUG
        $DEBUG = $Param{'DEBUG'} if ($Param{'DEBUG'}>=$DEBUG);

	# -----------------------------
	# check for things which aren't
	# declared as options:
	# 2 arguments: (user,db) -> ('localhost','user','db')
	if ($#ARGV == 1) {
	   MySQLaccess::Debug::Print(2,"$script called with 2 arguments:");
	   $Param{'host'} = $Param{'host'} || 'localhost'; 
	   $Param{'user'} = $ARGV[0] || $Param{'user'};
           $Param{'db'}   = $ARGV[1] || $Param{'db'}; 
	}
	# 3 arguments: (host,user,db)
	if ($#ARGV == 2) {
	   MySQLaccess::Debug::Print(2,"$script called with 3 arguments:");
	   $Param{'host'} = $ARGV[0] || $Param{'host'};
	   $Param{'user'} = $ARGV[1] || $Param{'user'};
	   $Param{'db'}   = $ARGV[2] || $Param{'db'};
	}

	# -------------------------------------
	# prompt for user password if requested
	if ( defined($Param{'password'}) && length($Param{'password'}) == 0 ) {
           $Param{'password'} = PromptPass(
	                        "Password for MySQL user $Param{'user'}: ");
	}
}
if ($MySQLaccess::CGI) { #CGI-version
	require CGI;
 	$Q = new CGI;
	$Param{'help'} = $Q->param('help') ;
	$Param{'host'} = $Q->param('host') || $Q->param('h') || $Param{'host'};
	$Param{'user'} = $Q->param('user') || $Q->param('u') || $Param{'user'};
	$Param{'db'}   = $Q->param('db')   || $Q->param('d') || $Param{'db'};
	$Param{'password'}  = $Q->param('password')  || $Q->param('p') || $Param{'password'};
	$Param{'superuser'} = $Q->param('superuser') || $Q->param('U') || $Param{'superuser'};
	$Param{'spassword'} = $Q->param('spassword') || $Q->param('P') || $Param{'spassword'};
	$Param{'rhost'}     = $Q->param('rhost')     || $Q->param('H') || $Param{'rhost'};
	$Param{'old_server'}= $Q->param('old_server')|| $Param{'old_server'};
	$Param{'debug'}     = $Q->param('debug')     || $Param{'debug'};
	$Param{'brief'}     = $Q->param('brief')     || $Param{'brief'}; 
	$Param{'table'}     = $Q->param('table')     || $Param{'table'}; 
	$Param{'relnotes'}  = $Q->param('relnotes');
	$Param{'plan'}      = $Q->param('plan');
	$Param{'howto'}     = $Q->param('howto'); 
	$Param{'version'}   = $Q->param('version') ? $Q->param('version') : $Q->param('v');
	$Param{'edit'}      = $Q->param('edit'); 
	$Param{'preview'}   = $Q->param('preview'); 
	$Param{'copy'}      = $Q->param('copy'); 
	$Param{'commit'}    = $Q->param('commit'); 
	$Param{'rollback'}  = $Q->param('rollback'); 
        # -----------------------------
        # set DEBUG
        $DEBUG = $Q->param('debug') if ($Q->param('debug')>=$DEBUG);
}

# ----------------------
# brief and table-format 
# exclude each-other
# table-format is preferred
if (defined($Param{'table'})) { undef($Param{'brief'}); }
if (defined($Param{'preview'}) or
    defined($Param{'copy'}) or
    defined($Param{'commit'}) or
    defined($Param{'rollback'}) ) { $Param{'edit'}='on'; }


# ----------------------
# if no host is given
# assume we mean 'localhost'
if (!defined($Param{'host'}))      { $Param{'host'}='localhost'; }

# ----------------------
# perform some checks
# -> eliminate 'broken pipe' error
push(@MySQLaccess::Grant::Error,'not_found_mysql')     if !(-x $MYSQL);
push(@MySQLaccess::Grant::Error,'not_found_diff')      if !(-x $DIFF);
push(@MySQLaccess::Grant::Error,'not_found_mysqldump') if !(-x $MYSQLDUMP);
if (@MySQLaccess::Grant::Error) {
   MySQLaccess::Report::Print_Error_Messages() ;
   exit 0;
}

#-----------------------
# get info/help if necc.
$print_usage=1;
if ( defined($Param{'version'}) ) {
   MySQLaccess::Report::Print_Version();
   $print_usage=0;
   MySQLaccess::Report::Print_Footer();
   MySQLaccess::DB::CloseConnection();
   exit 0;
#   exit 0;
}
if ( defined($Param{'relnotes'}) ) {
   MySQLaccess::Report::Print_Relnotes();
   $print_usage=0;
   MySQLaccess::Report::Print_Footer();
   MySQLaccess::DB::CloseConnection();
   exit 0;
#   exit 0;
}
if ( defined($Param{'plan'}) ) {
   MySQLaccess::Report::Print_Plans();
   $print_usage=0;
   MySQLaccess::Report::Print_Footer();
   MySQLaccess::DB::CloseConnection();
   exit 0;
#   exit 0;
}
if ( defined($Param{'howto'}) ) {
   MySQLaccess::Report::Print_HowTo();
   $print_usage=0;
   MySQLaccess::Report::Print_Footer();
   MySQLaccess::DB::CloseConnection();
   exit 0;
#   exit 0;
}

# -----------------------------
# generate a help-screen in CMD-mode
# or a blanc form in CGI-mode 
if ( defined($Param{'help'}) 
     or !defined($Param{'user'}) 
     or !defined($Param{'host'})
     or !defined($Param{'db'}) 
   ) {
   push(@MySQLaccess::Grant::Error,'user_required') unless defined($Param{'user'});
   push(@MySQLaccess::Grant::Error,'db_required') unless defined($Param{'db'});
   push(@MySQLaccess::Grant::Error,'host_required') unless defined($Param{'host'});
   MySQLaccess::Report::Print_Usage() if $print_usage;
   exit 0;
}


# ----------------------------
# get hostname and local-ip
# for localhost
$localhost = MySQLaccess::Host::LocalHost();
$local_ip  = MySQLaccess::Host::Name2IP($localhost);
$MySQLaccess::Host::localhost = MySQLaccess::Host::LocalHost();
$MySQLaccess::Host::local_ip  = MySQLaccess::Host::Name2IP($localhost);
MySQLaccess::Debug::Print(3, "localhost name=$localhost, ip=$local_ip");

#-----------------------------------
# version of MySQL-server to connect
# to determine use of full where clause
$MySQLaccess::Host::SERVER = $Param{'old_server'} ? '3.20' : $SERVER;

#---------------------------------
# create the config file for mysql and mysqldump
# to avoid passing authentication info on the command line
#
MergeConfigFiles();
die "Unsafe config file found: $unsafeConfig\n"  if $unsafeConfig;
if (defined($Param{'superuser'})) {
   $MYSQL_CNF{'mysql'}{'user'} = $Param{'superuser'};
   $MYSQL_CNF{'mysqldump'}{'user'} = $Param{'superuser'};
}
if (defined($Param{'spassword'})) {
   if ( $CMD && length($Param{'spassword'}) == 0 ) {
      $Param{'spassword'} =
           PromptPass("Password for MySQL superuser $Param{'superuser'}: ");
   }
   if ( length($Param{'spassword'}) > 0 ) {
      $MYSQL_CNF{'mysql'}{'password'} = $Param{'spassword'};
      $MYSQL_CNF{'mysqldump'}{'password'} = $Param{'spassword'};
   }
}
WriteTempConfigFile();

#---------------------------------
# Inform user if he has not enough
# privileges to read the access-db
if ( $nerror=MySQLaccess::DB::OpenConnection() ) {
    MySQLaccess::Report::Print_Error_Access($nerror);
    exit 0;
}

# -----------------------
# Read MySQL ACL-files
if ($nerror=MySQLaccess::Grant::ReadTables()) {
    MySQLaccess::Report::Print_Error_Access($nerror);
    exit 0;
};
if ($Param{'edit'} and $nerror=MySQLaccess::Grant::ReadTables('tmp')) {
    MySQLaccess::Report::Print_Error_Access($nerror);
    exit 0;
}

#---------------------------------
# reload temporay grant-tables 
# with data from original ones
if ( defined($Param{'copy'}) ) {
   $nerror=MySQLaccess::DB::LoadTmpTables();
   if ($nerror) {
      MySQLaccess::Report::Print_Error_Access($nerror);
      exit 0;
   }
   my $msg = "The grant-rules are copied from the grant-tables to\n"
           . "the temporary tables.";
   MySQLaccess::Report::Print_Message([$msg]);
#   MySQLaccess::Report::Print_Footer();
#   MySQLaccess::DB::CloseConnection();
#   exit 0;
}


#---------------------------------
# preview result of changes in the 
# grant-tables
if ( defined($Param{'preview'}) ) {
   $aref=MySQLaccess::Grant::Diff_Privileges();
   MySQLaccess::Report::Print_Diff_ACL($aref);
#   MySQLaccess::Report::Print_Footer();
#   MySQLaccess::DB::CloseConnection();
#   exit 0;
}


#---------------------------------
# reload grant-tables 
# with data from temporary tables
if ( defined($Param{'commit'}) ) {
   if ($nerror = MySQLaccess::DB::CommitGrantTables()) {
      MySQLaccess::Report::Print_Error_Access($nerror);
      exit 0;
   }
   my $msg = "The grant-rules have been copied from the temporary tables\n"
           . "to the grant-tables.";
   my $msg1= "Don't forget to do an 'mysqladmin reload' before these\n"
           . "changes take effect.";
   my $msg2= "A backup-version of your original grant-rules are saved in the\n"
           . "backup-tables, so you can always perform a 1-level rollback.";
   MySQLaccess::Report::Print_Message([$msg,$msg1,$msg2]);
#   MySQLaccess::Report::Print_Footer();
#   MySQLaccess::DB::CloseConnection();
#   exit 0;
}

#---------------------------------
# restore previous grant-rules
# with data from backup tables
if ( defined($Param{'rollback'}) ) {
   if ($nerror = MySQLaccess::DB::RollbackGrantTables()) {
      MySQLaccess::Report::Print_Error_Access($nerror);
      exit 0;
   }
   my $msg = "The old grant-rules have been copied back from the backup tables\n"
           . "to the grant-tables.";
   my $msg1= "Don't forget to do an 'mysqladmin reload' before these\n"
           . "changes take effect.";
   MySQLaccess::Report::Print_Message([$msg,$msg1]);
#   MySQLaccess::Report::Print_Footer();
#   MySQLaccess::DB::CloseConnection();
#   exit 0;
}
#----------------------------------
# show edit-taskbar
if ( defined($Param{'edit'})) {
   if ($MySQLaccess::CGI ) {
   MySQLaccess::Report::Print_Edit();
   $print_usage=0;
   MySQLaccess::Report::Print_Footer();
   MySQLaccess::DB::CloseConnection();
   exit 0;
   }
   else {
   MySQLaccess::Report::Print_Edit();
   $print_usage=0;
   MySQLaccess::Report::Print_Footer();
   MySQLaccess::DB::CloseConnection();
   exit 0;
   }
}


# -----------------------------
# Build list of users,dbs,hosts
# to process...
@all_dbs   = @{MySQLaccess::DB::Get_All_dbs($Param{'db'})};
@all_users = @{MySQLaccess::DB::Get_All_users($Param{'user'})};
@all_hosts = @{MySQLaccess::DB::Get_All_hosts($Param{'host'})};
#if EDIT-mode
#@all_dbs_tmp   = @{MySQLaccess::DB::Get_All_dbs($Param{'db'},'tmp')};
#@all_users_tmp = @{MySQLaccess::DB::Get_All_users($Param{'user'},'tmp')};
#@all_hosts_tmp = @{MySQLaccess::DB::Get_All_hosts($Param{'host'},'tmp')};

# -----------------------------
# Report access-rights for each
# tuple (host,user,db)
#$headers=0;
my %Access = ();
foreach $host (@all_hosts) {
  foreach $user (@all_users) {
    foreach $db (@all_dbs) {
      MySQLaccess::Grant::Initialize();
      %Access = MySQLaccess::Grant::Get_Access_Rights($host,$user,$db);	
      MySQLaccess::Report::Print_Access_rights($host,$user,$db,\%Access);
    }
  }
}

# -----------------------------
# End script
MySQLaccess::Report::Print_Footer();
MySQLaccess::DB::CloseConnection();
exit 0;

#############################################################
#  FUNCTIONS  #
###############
sub GetMode {
   my $cmd=0;
   my $cgi=0;
   if (defined($ENV{'HTTP_HOST'})) { $cmd=0; $cgi=1; }
   else                            { $cmd=1; $cgi=0; } 
   return ($cmd,$cgi);
}

# ================================
# sub PromptPass
#  prompt tty for a password
# ================================
sub PromptPass {
    my ($prompt) = @_;
    my $password;
    $ENV{PATH} = "/bin:/usr/bin";
    $ENV{IFS} = " \t\n";
    $ENV{SHELL} = "/bin/sh";
    system "stty -echo";
    print $prompt;
    chomp($password = <STDIN>);
    print "\n";
    system "stty echo";
    $password;
}

# =================================
# sub CheckUnsafeFile
#  tell if a config file containing a password is unsafe
# =================================
sub CheckUnsafeFile {
    my ($fname) = @_;
    my ($dev, $ino, $mode, $nlink,
        $uid, $gid, $rdev, $size,
        $atime, $mtime, $ctime, $blksize, $blocks) = stat($fname);

    if ( $uid != $< ) {   # unsafe if owned by other than current user
        return 1;
    }
    if ( $mode & 066 ) {  # unsafe if accessible by other
        return 1;
    }
    $fname =~ s#/[^/]+$##;
    if ( (length $fname) > 0 ) {
        return CheckUnsafeDir($fname);
    }
    return 0;
}

# =================================
# sub CheckUnsafeDir
#  tell if a directory is unsafe
# =================================
sub CheckUnsafeDir {
    my ($fname) = @_;
    my ($dev, $ino, $mode, $nlink,
        $uid, $gid, $rdev, $size,
        $atime, $mtime, $ctime, $blksize, $blocks) = stat($fname);

    # not owned by me or root
    if ( ($uid != $<) && ($uid != 0) ) {
        return 1;
    }
    if ( $mode & 022 ) {  # unsafe if writable by other
        return 1  unless $mode & 01000;  # but sticky bit ok
    }
    $fname =~ s#/[^/]+$##;
    if ( (length $fname) > 0 ) {
        return CheckUnsafeDir($fname);
    }
    return 0;
}

# =================================
# sub MergeConfigFile
#  merge data from .cnf file
# =================================
sub MergeConfigFile {
    my ($fname) = @_;
    my ($group, $item, $value);
    if ( open CNF, $fname ) {
         while (<CNF>) {
             s/^\s+//;
             next if /^[#;]/;
             if ( /\[\s*(\w+)\s*]/ ) {
                 $group = $1;
                 $group =~ tr/A-Z/a-z/;
                 if ( !exists $MYSQL_CNF{$group} ) {
                     undef $group;
                 }
             } elsif ( defined $group ) {
                 ($item, $value) = /((?:\w|-)+)\s*=\s*(\S+)/;
                 # don't unquote backslashes as we just write it back out
                 if ( defined $item ) {
                     if ( $item =~ /^password$/ ) {
                         if ( CheckUnsafeFile($fname) ) {
                             $unsafeConfig = $fname;
                         }
                     }
                     if ( $group eq 'client' || $group eq "client-server") {
                         $MYSQL_CNF{'mysql'}{$item} = $value;
                         $MYSQL_CNF{'mysqldump'}{$item} = $value;
                     } else {
                         $MYSQL_CNF{$group}{$item} = $value;
                     }
                 }
             }
         }
         close(CNF);
    }
}

# =================================
# sub MergeConfigFiles
#  merge options from config files
#  NOTE: really should do two separate merges for each
#    client to exactly duplicate order of resulting argument lists
# =================================
sub MergeConfigFiles {
    my ($name,$pass,$uid,$gid,$quota,$comment,$gcos,$dir,$shell) = getpwuid $<;
    MergeConfigFile("@prefix@/my.cnf");
    MergeConfigFile("@sysconfdir@/my.cnf");
    MergeConfigFile("$dir/.my.cnf");
}

# =================================
# sub WriteTempConfigFile
#  write 
# =================================
sub WriteTempConfigFile {
   sysopen CNFFILE, $MYSQL_CNF, O_RDWR|O_CREAT|O_EXCL, 0700
      or die "sysopen $MYSQL_CNF: $!";
   
   # groups may be in any order, generic groups such as [client] assumed
   # here to be empty
   foreach $group (keys %MYSQL_CNF) {
      print CNFFILE "[$group]\n";
      foreach $item (keys %{$MYSQL_CNF{$group}}) {
         if ( defined $MYSQL_CNF{$group}{$item} ) {
            print CNFFILE "$item=$MYSQL_CNF{$group}{$item}\n";
         } else {
            print CNFFILE "$item\n";
         }
      }
      print CNFFILE "\n";
   }
   close(CNFFILE);
}

######################################################################
package MySQLaccess::DB;
###########
BEGIN {
    $DEBUG     = 2;
    $DEBUG     = $MySQLaccess::DEBUG unless ($DEBUG);
    # Error-messages from the MySQL client
    %ACCESS_ERR= ('Access_denied'       => 'Access denied' 
                 ,'Dbaccess_denied'     => 'Access to database denied'
                 ,'Unrecognized_option' => 'unrecognized option' 
                 ,'Unknown_table'       => "Can't find file:"
                 ,'unknown_error'       => '^ERROR:'
                 );
}
# ######################################
#  Connecting to the MYSQL DB
# ======================================
# sub OpenConnection
#  Open an connection to the mysql-db
#  questions to MYSQL_Q
#  answers from MYSQL_A
# ======================================
sub OpenConnection {
    my $pid;
    MySQLaccess::Debug::Print(2,"OpenConnection:");

    # check path to mysql-client executable
    if (! -f $MySQLaccess::MYSQL) {
       if ($MySQLaccess::CMD) { die "Could not find MySQL-client '$MySQLaccess::MYSQL'"; }
       if ($MySQLaccess::CGI) { 
          print "<center>\n<font color=Red>\n";
          print "ERROR: Could not find MySQL-client '$MySQLaccess::MYSQL'";
          print "</center>\n</font>\n";
          exit 0;
       }
    }

    # path to mysql executable
    my $connect = "$MySQLaccess::MYSQL --defaults-file=$MySQLaccess::MYSQL_CNF";
    $connect .= " $MySQLaccess::MYSQL_OPT";
    # superuser, spassword transmitted via defaults-file
    if (defined($MySQLaccess::Param{'rhost'}))     { $connect .= " --host=$MySQLaccess::Param{'rhost'}"; }
    # other options??

    # grant-database
    $connect .= " $MySQLaccess::ACCESS_DB";

    # open connection (not using /bin/sh -c)
    MySQLaccess::Debug::Print(2,"Connecting to: $connect");
    $pid=IPC::Open3::open3(\*MYSQL_Q,\*MYSQL_A,"",split /\s+/,$connect);
    MySQLaccess::Debug::Print(2,"PID of open pipe: $pid");
    
    # check connection 
    print MYSQL_Q "select 'ok';\n";
    $answer = <MYSQL_A>; #answer from mysql
    MySQLaccess::Debug::Print(2,"Answer: $answer\n");
    foreach $nerror (sort(keys(%ACCESS_ERR))) {
      MySQLaccess::Debug::Print(3,"check answer for error $ACCESS_ERR{$nerror}");
      if (grep(/$ACCESS_ERR{$nerror}/i,$answer)) { 
         MySQLaccess::Debug::Print(2,"Answer contain error [$nerror]");
         return $nerror; 
      }
    }

if (0) {
    # check server-version 
    print MYSQL_Q "select 'ok';\n";
    $answer = <MYSQL_A>; #answer from mysql
    MySQLaccess::Debug::Print(2,"Answer: $answer\n");
    foreach $nerror (sort(keys(%ACCESS_ERR))) {
      MySQLaccess::Debug::Print(3,"check answer for error $ACCESS_ERR{$nerror}");
      if (grep(/$ACCESS_ERR{$nerror}/i,$answer)) { 
         MySQLaccess::Debug::Print(2,"Answer contain error [$nerror]");
         return $nerror; 
      }
    }
}

    my $skip=<MYSQL_A>; 
    return 0; 
}

# ======================================
# sub CloseConnection
#  Close the connection to the mysql-db
# ======================================
sub CloseConnection {
    close MYSQL_Q;
    close MYSQL_A;
}

# ===========================================================
# sub CreateTable($table)
#  Create temporary/backup table
# ===========================================================
sub CreateTable {
    my $pid;
    my ($table,$force) = @_;
    my %tables = ( $MySQLaccess::ACCESS_U_TMP => $MySQLaccess::ACCESS_U,
                   $MySQLaccess::ACCESS_H_TMP => $MySQLaccess::ACCESS_H,
                   $MySQLaccess::ACCESS_D_TMP => $MySQLaccess::ACCESS_D,
                   $MySQLaccess::ACCESS_U_BCK => $MySQLaccess::ACCESS_U,
                   $MySQLaccess::ACCESS_H_BCK => $MySQLaccess::ACCESS_H,
                   $MySQLaccess::ACCESS_D_BCK => $MySQLaccess::ACCESS_D,
                   $MySQLaccess::ACCESS_U => $MySQLaccess::ACCESS_U_BCK,
                   $MySQLaccess::ACCESS_H => $MySQLaccess::ACCESS_H_BCK,
                   $MySQLaccess::ACCESS_D => $MySQLaccess::ACCESS_D_BCK,
                 ); 
    my $tbl;
    my $query="";
    my $delim;
    my $skip;
    my $create;
    my @known_tables=();

#    print STDERR "CreateTable($table)\n";
    MySQLaccess::Debug::Print(1,"CreateTable($table):");

    ## error-handling
    return 'Unknown_table' unless defined($tables{$table});

    ## build list of known/existing tables;
    ## if 'force' existing table is dropped first
    if (defined($force) and $force) {
       @known_tables = Show_Tables();
       if (grep(/^$table$/,@known_tables)) {
       $query = "DROP TABLE $table;";
       }
    }

    ## path to mysqldump executable
    my $connect = $MySQLaccess::MYSQLDUMP;
    $connect .= " --defaults-file=$MySQLaccess::MYSQL_CNF --no-data";
    # superuser, spassword transmitted via defaults-file
    if (defined($MySQLaccess::Param{'rhost'}))     { $connect .= " --host=$MySQLaccess::Param{'rhost'}"; }
    $connect .= " $MySQLaccess::ACCESS_DB";
    $connect .= " $tables{$table}";


    ## get creation-data for original table
    $create = '';
    my $mysqldump = $connect;
    $mysqldump =~ s/ \$TABLE / $tbl /;

    # open connection (not using /bin/sh -c)
    MySQLaccess::Debug::Print(2,"Connecting to: $connect");
    $pid=IPC::Open3::open3(\*DONTCARE,\*CREATE,"",split /\s+/,$mysqldump);
    MySQLaccess::Debug::Print(2,"PID of open pipe: $pid");
    #open(CREATE,"$mysqldump");
    @create = <CREATE>;
    $create = "@create";
    foreach $nerror (sort(keys(%ACCESS_ERR))) {
       MySQLaccess::Debug::Print(3,"check answer for error $ACCESS_ERR{$nerror}");
       if (grep(/$ACCESS_ERR{$nerror}/i,$create)) { 
          MySQLaccess::Debug::Print(2,"Answer contain error [$nerror]");
          return $nerror; 
       }
    }
    close(CREATE);
    close(DONTCARE);

    ## manipulate result for creation-data for temporary table
    $create =~ s/CREATE TABLE $tables{$table} \(/CREATE TABLE $table \(/;

    ## recreate temporary table
    $query .= "$create\n";
    $query .= "select 'ok';";

    ## execute query
    print MYSQL_Q "$query\n";
#    print STDERR $query;

    $answer = <MYSQL_A>; #answer from mysql
#    print STDERR "A>",$answer;
    MySQLaccess::Debug::Print(2,"Answer: $answer\n");
    foreach $nerror (sort(keys(%ACCESS_ERR))) {
#       print STDERR "->$nerror?";
       MySQLaccess::Debug::Print(3,"check answer for error $ACCESS_ERR{$nerror}");
       if (grep(/$ACCESS_ERR{$nerror}/i,$answer)) { 
#          print STDERR "Yes!";
          MySQLaccess::Debug::Print(2,"Answer contain error [$nerror]");
          return $nerror; 
       }
    }

    $delim = <MYSQL_A>; # read header
    if ($delim ne "ok\n") {
       while (($line=<MYSQL_A>) ne "ok\n")
       { MySQLaccess::Debug::Print(3," A> $line"); }
        $skip = <MYSQL_A>; # skip result 'ok'
    }
#    print STDERR "CreateTable done\n";
    return 0;
}


# ===========================================================
# sub CopyTable()
#  Copy the structure and the data of a table to another table
# ===========================================================
sub CopyTable {
    my ($from,$to,$force) = @_;
    my @known_tables  = Show_Tables();    
    my $query = "";
    my $nerror= 0;
    my $skip;

#    print STDERR "CopyTable($from,$to)\n";
    MySQLaccess::Debug::Print(1,"MySQLaccess::DB::CopyTable($from,$to)");

    ## error-handling
    if (!grep(/^$from$/,@known_tables)) { return 'Unknown_table'; }

    ## copy structure 
    ## if forced
    if (defined($force) and $force) {
       return $nerror if ($nerror=CreateTable($to,$force)); 
#       print STDERR "Structure copied\n";
    }

    ## copy data
    $query .= "DELETE FROM $to;";
    $query .= "INSERT INTO $to SELECT * FROM $from;";
    $query .= "SELECT 'ok';\n";
    MySQLaccess::Debug::Print(2,"Query: $query");
       
    ## execute query
    print MYSQL_Q "$query\n";
#    print STDERR $query;

    ## check for errors...
    my $answer = <MYSQL_A>; #answer from mysql
#    print STDERR $answer;
    MySQLaccess::Debug::Print(2,"Answer: $answer\n");
    foreach $nerror (sort(keys(%ACCESS_ERR))) {
       MySQLaccess::Debug::Print(3,"check answer for error $ACCESS_ERR{$nerror}");
       if (grep(/$ACCESS_ERR{$nerror}/i,$answer)) { 
          MySQLaccess::Debug::Print(2,"Answer contain error [$nerror]");
          return $nerror; 
       }
    }

    my $delim = <MYSQL_A>; # read header
#    print STDERR $delim;
    if ($delim ne "ok\n") {
       while (($line=<MYSQL_A>) ne "ok\n")
       { MySQLaccess::Debug::Print(3," A> $line"); }
       $skip = <MYSQL_A>; # skip result 'ok'
    }

    return 0;
}

# ===========================================================
# sub LoadTmpTables()
#  (Re)load temporary tables with entries of ACL-tables
# ===========================================================
sub LoadTmpTables {
    my %tables = ( $MySQLaccess::ACCESS_U => $MySQLaccess::ACCESS_U_TMP,
                   $MySQLaccess::ACCESS_H => $MySQLaccess::ACCESS_H_TMP,
                   $MySQLaccess::ACCESS_D => $MySQLaccess::ACCESS_D_TMP,
                 ); 
    my $tbl;
    my $nerror;
    
#    print STDERR "LoadTmpTables:\n";
    MySQLaccess::Debug::Print(1,"LoadTmpTables():");
    foreach $tbl (keys(%tables)) {
#       print STDERR "$tbl -> $tables{$tbl}\n";
       MySQLaccess::Debug::Print(2,"Loading table $tbl -> $tables{$tbl}.");
       return $nerror if ($nerror=CopyTable($tbl,$tables{$tbl},'force'));
    }
    return 0;
}

# ===========================================================
# sub BackupGrantTables()
#  Make a backup of the original grant-tables
# ===========================================================
sub BackupGrantTables {
    my %tables = ( $MySQLaccess::ACCESS_U => $MySQLaccess::ACCESS_U_BCK,
                   $MySQLaccess::ACCESS_H => $MySQLaccess::ACCESS_H_BCK,
                   $MySQLaccess::ACCESS_D => $MySQLaccess::ACCESS_D_BCK,
                 ); 
    my $tbl;
    my $nerror;
    
#    print STDERR "BackupGrantTables:\n";
    MySQLaccess::Debug::Print(1,"BackupGrantTables():");
    foreach $tbl (keys(%tables)) {
#       print STDERR "$tbl -> $tables{$tbl}\n";
       MySQLaccess::Debug::Print(2,"Backup table $tbl -> $tables{$tbl}.");
       return $nerror if ($nerror=CopyTable($tbl,$tables{$tbl},'force'));
    }
    return 0;
}

# ===========================================================
# sub RollbackGrantTables()
#  Rollback the backup of the grant-tables
# ===========================================================
sub RollbackGrantTables {
    my %tables = ( $MySQLaccess::ACCESS_U_BCK => $MySQLaccess::ACCESS_U,
                   $MySQLaccess::ACCESS_H_BCK => $MySQLaccess::ACCESS_H,
                   $MySQLaccess::ACCESS_D_BCK => $MySQLaccess::ACCESS_D,
                 ); 
    my $tbl;
    my $nerror;
    
#    print STDERR "RollbackGrantTables:\n";
    MySQLaccess::Debug::Print(1,"RollbackGrantTables():");
    foreach $tbl (keys(%tables)) {
#       print STDERR "$tbl -> $tables{$tbl}\n";
       MySQLaccess::Debug::Print(2,"Rollback table $tbl -> $tables{$tbl}.");
       return $nerror if ($nerror=CopyTable($tbl,$tables{$tbl},'force'));
    }
    return 0;
}


# ===========================================================
# sub CommitGrantTables()
#  Copy grant-rules from temporary tables to the ACL-tables
# ===========================================================
sub CommitGrantTables {
    my %tables = ( $MySQLaccess::ACCESS_U => $MySQLaccess::ACCESS_U_TMP,
                   $MySQLaccess::ACCESS_H => $MySQLaccess::ACCESS_H_TMP,
                   $MySQLaccess::ACCESS_D => $MySQLaccess::ACCESS_D_TMP,
                 ); 
    my $tbl;
    my $query;
    my $delim;
    my $skip;
    my $create;

    print STDERR "CommitGrantTables()\n";
    MySQLaccess::Debug::Print(1,"CommitGrantTables():");
    
    ## Make backup of original grant-tables
    MySQLaccess::Debug::Print(2,"Making backup of original grant-tables...");
    BackupGrantTables();

    ## Copy data from temporay tables to grant-tables
    foreach $tbl (keys(%tables)) {
       print STDERR "$tbl -> $tables{$tbl}\n";
       MySQLaccess::Debug::Print(2,"Loading data $tables{$tbl} -> $tbl.");
       return $nerror if ($nerror=CopyTable($tables{$tbl},$tbl));
    }
    return 0;
}


# ===========================================================
# sub Show_Fields($table): 
#  return (a reference to) a hash which holds the names
#  of all relevant grant-fields, with their index in the record,
#  and (a reference to) an array which holds the fieldnames.
# ===========================================================
sub Show_Fields {
    my ($table) = @_;
    my %skip = ('host' => [0,1]
               ,'user' => [0,1,2]
               ,'db'   => [0,1,2]
               );
    my %Struct = ();
    my @Struct = ();
    my $query = "show fields from $table;select 'ok';\n";
    my $i=0;
    my $line;

#print STDERR $query;
    MySQLaccess::Debug::Print(1,"Show_Fields($table):");
    MySQLaccess::Debug::Print(2,"SQL: $query");

    print MYSQL_Q "$query";
    my $skip = <MYSQL_A>;  #skip header
    while (($line=<MYSQL_A>) ne "ok\n")
    {
#print STDERR ">",$line;
	chop($line);
	MySQLaccess::Debug::Print(2," $table>: $line");
	my ($field,$type,$null,$key,$default,$extra) = split(' ',$line);
        $field = ucfirst($field); 
	MySQLaccess::Debug::Print(3, " <split: $field - $type - $null - $key - $default - $extra");
	if (! grep(/$i/,@{$skip{$table}}) ){
	   $Struct{$field} = $i; #hash
	   push(@Struct,$field); #array
	   MySQLaccess::Debug::Print(3," ==> added column[$i]: $field ($Struct{$field})");
	} 
        else {
           MySQLaccess::Debug::Print(3," ==> skipped column[$i], value=[$field]");
        }
	$i++;
    }

    $skip=<MYSQL_A>;  # Get ok row (found already ok header)

    MySQLaccess::Debug::Print(2, "Array:");
    foreach $field (@Struct) { MySQLaccess::Debug::Print(2,"+ $field"); }
    MySQLaccess::Debug::Print(2,"Hash:");
    foreach $field (keys(%Struct)) { MySQLaccess::Debug::Print(2,"+ $field -> $Struct{$field}"); }

    return  (\%Struct,\@Struct); 
}

# ===========================================================
# sub Show_Tables(): 
#  return (a reference to) an array which holds all 
#  known tables.
# ===========================================================
sub Show_Tables {
    my @Tables = ();
    my $query = "show tables;select 'ok';\n";
    my $i=0;
    my $line;

    MySQLaccess::Debug::Print(1,"Show_Tables():");
    MySQLaccess::Debug::Print(2,"SQL: $query");

    print MYSQL_Q "$query";
    my $skip = <MYSQL_A>;  #skip header
    while (($line=<MYSQL_A>) ne "ok\n")
    {
	chop($line);
	push(@Tables,$line); #array
	MySQLaccess::Debug::Print(3," ==> added table: $line");
    }

    $skip=<MYSQL_A>;  # Get ok row (found already ok header)

    MySQLaccess::Debug::Print(2, "Array:");
    foreach $tbl (@Tables) { MySQLaccess::Debug::Print(2,"+ $tbl"); }

    return @Tables; 
}

# ======================================
# sub Validate_Password($passwd,$host,$user,$encpw)
#  Validate the given password 
#  for user '$user' 
#  connecting from host '$host'
# ======================================
sub Validate_Password {
    my ($password,$host,$user,$encpw) = @_;
    my $valid=0;

    MySQLaccess::Debug::Print(1,"Validate_Password($password,$host,$user,$encpw)");
    my $sql = "select host,user,password from user having "
             ."host='$host' and user='$user' and password='$encpw' "
             ."and password=PASSWORD('$password');\n";
    $sql .= "select 'ok';\n";
    MySQLaccess::Debug::Print(2,"SQL = $sql");
    print MYSQL_Q "$sql";
    
    # if password is valid, at least 1 row returns before we read 'ok'
    while ( ($line=<MYSQL_A>) ne "ok\n") {
      MySQLaccess::Debug::Print(2," A> $line");
      $valid = defined($line); 
    }
    my $skip = <MYSQL_A>; # read 'ok'

    return $valid;
}


# ==========================================================
# sub Sort_fields: (rewritten by psmith)
#  Build the query for an ordered list of entries
# ==========================================================
sub Sort_fields {
  my ($start, $end, $sofar, $this, @rest) = (@_);
  my @where = ("((FIELD not like '\\%') AND (FIELD <> ''))",
               "((FIELD like '%\\%%') OR (FIELD like '%\\_%'))",
               "(FIELD = '')");
  my $res = '';

  $this or return ("$start $sofar $end");

  $sofar .= ' AND ' if $sofar;

  foreach $w (@where) {
    my $f = $w;
    $f =~ s/FIELD/$this/g;

    $res .= Sort_fields($start, $end, "$sofar$f", @rest);
  }

  return ($res);
}

# ===========================================================
# sub Sort_table: (rewritten by psmith)
#  return all entries in the given table,
#  in an ordered fashion
# ===========================================================
sub Sort_table {
    my ($tbl, @order) = @_;
    my @res=();

    # as long as there's no full where clause (Distrib 3.20)...
    # use having :-(
    # NOTE: this clause WILL NOT work on 3.21, because of the
    # order of 'ORDER BY' and 'HAVING'
    my $start = "SELECT *,UCASE(host) as ucase_host FROM $tbl ";
    $start   .= 'ORDER BY ' . join(',', @order) ." HAVING ";
    my $end   = ";\n";

    # server version 3.21 has a full where clause :-)
    if ($MySQLaccess::Host::SERVER >= '3.21') {
    # print "+++USING FULL WHERE CLAUSE+++\n";
       $start = "SELECT *,UCASE(host) as ucase_host FROM $tbl WHERE ";
       $end = ' ORDER BY ' . join(',', @order) . ";\n";
    }

    MySQLaccess::Debug::Print(1,"Sort_table():");
    MySQLaccess::Debug::Print(2,"Sorting table $tbl by `@order'");

    my $tmp;
    foreach $tmp (@order)
    {
      $tmp="UCASE(host)" if ($tmp eq "ucase_host");
    }
    my $query  = Sort_fields($start, $end, '', @order);
    $query    .= "select 'ok';\n";
    MySQLaccess::Debug::Print(2,"Query: $query");

    print MYSQL_Q "$query\n";

    my $delim = <MYSQL_A>; # read header
    MySQLaccess::Debug::Print(3," A> $delim");
    if ($delim ne "ok\n") {
       if ($delim =~ /^ERROR/) {
       push(@MySQLaccess::Grant::Error,'use_old_server');
       MySQLaccess::Report::Print_Error_Messages() ;
       exit 1;
       }
       while (($line=<MYSQL_A>) ne "ok\n")
       {
           MySQLaccess::Debug::Print(3," A> $line");
           push(@res,$line);
       }
    }
    my $skip = <MYSQL_A>; # skip result 'ok'

    # remove columnheaders from output
    @res = grep(!/^\Q$delim\E$/, @res);
    # remove trailing \n from each returned record
    chomp(@res); 
    # each record has 1 field to much : ucase_host
    @res = grep { /(.*)\t.*$/; $_ = $1; } @res;

    MySQLaccess::Debug::Print(2,"Result of sorted table $tbl:");
    foreach $line (@res) { MySQLaccess::Debug::Print(2," >>$line"); }
    return @res;
}

# ===========================================================
# sub Get_All_db(template): 
#  return all db the grant-tables are working on,
#  which conform to the template
# ===========================================================
sub Get_All_dbs {
   my ($template,$tmp) = @_;
   my @db=();
   my $aref;

   # working with  temporary tables or production tables
   if (defined($tmp) and $tmp) {
      $aref = \@MySQLaccess::Grant::sorted_db_tmp_table ;
   }
   else {
      $aref = \@MySQLaccess::Grant::sorted_db_table;
   }

   MySQLaccess::Debug::Print(1," template=[$template]");

   # get all db for which access-rights can be calculated,
   # which conform to the template.
   # !! these db's don't have to exist yet, so it's not
   #    enough to look which db already exist on the system
   $reg_expr = $template;
   if ($template =~ /[\*\?]/) {
      $reg_expr =~ tr/*?/%_/;
      #$reg_expr = MySQLaccess::Wildcards::Wild2Reg($template);
   }
   $reg_expr = MySQLaccess::Wildcards::SQL2Reg("$reg_expr");

   if ( ! ($template =~ /[\*\?%_]/) ) {
      push(@db,$template);
      return \@db;
   }

   MySQLaccess::Debug::Print(2,"#Reading db-table...");
   foreach $record (@{$aref}) { #MySQLaccess::Grant::sorted_db_table) {
    my @record=split(/\t/,$record);
    my $db = $record[1];
    MySQLaccess::Debug::Print(2,"> $db ");
    if ( (!grep(/$db/i,@db)) and ($db =~/$reg_expr/i) ) {
       push(@db,$db);
       MySQLaccess::Debug::Print(2,"added");
    } 
    else {
       MySQLaccess::Debug::Print(2,"skipped");
    }
   }
   # if no rule is found for a certain db in the db-table,
   # the rights of the user are used, so we should inform
   # the user for
   if (!grep(/^%$/,@db)) { push(@db,"$MySQLaccess::NEW_DB"); }
   return \@db;
}

# ===========================================================
# sub Get_All_users(template): 
#  return all users the grant-tables are working on,
#  which conform to the template
# ===========================================================
sub Get_All_users {
   ($template,$tmp) = @_; # nog verder uitwerken!!!
   my @user=();
   my $aref;

   # working with  temporary tables or production tables
   if (defined($tmp) and $tmp) {
      $aref = \@MySQLaccess::Grant::sorted_user_tmp_table ;
   }
   else {
      $aref = \@MySQLaccess::Grant::sorted_user_table;
   }

   MySQLaccess::Debug::Print(1,"Debug Get_All_users:");
   # get all db for which access-rights can be calculated.
   # !! these db's don't have to exist yet, so it's not
   #    enough to look which db already exist on the system
   $reg_expr = $template;
   if ($template =~ /[\*\?]/) {
      $reg_expr =~ tr/*?/%_/;
      #$reg_expr = MySQLaccess::Wildcards::Wild2Reg($template);
   }
   $reg_expr = MySQLaccess::Wildcards::SQL2Reg("$reg_expr");

   if ( ! ($template =~ /[\*\?%_]/) ) {
      push(@user,$template);
      return \@user;
   }

   MySQLaccess::Debug::Print(2,"#Reading user-table...");
   foreach $record (@{$aref}) { #MySQLaccess::Grant::sorted_user_table) {
    my @record=split(/\t/,$record);
    my $user = $record[1];
    MySQLaccess::Debug::Print(2,"> $user ");
    if ( (!grep(/$user/,@user)) and ($user=~/$reg_expr/)) {
       push(@user,$user);
       MySQLaccess::Debug::Print(2, "added");
    } 
    else {
       MySQLaccess::Debug::Print(2, "skipped");
    }
   }
   # Any user means also:
   # - the 'empty' user, ie without supplying a username
   # - any user still to be defined/created
   #push(@user,'');               #without_suplying_a_username
   push(@user,"$MySQLaccess::NEW_USER");
   #push(@Warnings,'minimum_priv');
   return \@user;
}

# ===========================================================
# sub Get_All_hosts(template): 
#  return all hosts the grant-tables are working on,
#  which conform to the template
# ===========================================================
sub Get_All_hosts {
   my ($template,$tmp) = @_;
   my @host=();
   my $aref;
   my $aref1;

   # working with  temporary tables or production tables
   if (defined($tmp) and $tmp) {
      $aref = \@MySQLaccess::Grant::sorted_host_tmp_table ;
      $aref1= \@MySQLaccess::Grant::sorted_db_tmp_table ;
   }
   else {
      $aref = \@MySQLaccess::Grant::sorted_host_table;
      $aref1= \@MySQLaccess::Grant::sorted_db_table ;
   }

   MySQLaccess::Debug::Print(1, "Debug Get_All_hosts:");
   # get all db for which access-rights can be calculated.
   # !! these db's don't have to exist yet, so it's not
   #    enough to look which db already exist on the system
   $reg_expr = $template;
   if ($template =~ /[\*\?]/) {
      $reg_expr =~ tr/*?/%_/;
      #$reg_expr = MySQLaccess::Wildcards::Wild2Reg($template);
   }
   $reg_expr = MySQLaccess::Wildcards::SQL2Reg("$reg_expr");

   if ( ! ($template =~ /[\*\?%_]/) ) {
      push(@host,$template);
      return \@host;
   }

   MySQLaccess::Debug::Print(1, "#Reading db-table...");
   foreach $record (@{$aref1}) { #MySQLaccess::Grant::sorted_db_table) {
    my @record=split(/\t/,$record);
    my $host = $record[0];
    MySQLaccess::Debug::Print(2, "> $host ");
    if (! grep(/$host/i,@host)) {
       push(@host,$host);
       MySQLaccess::Debug::Print(2, "added");
    } 
    else {
       MySQLaccess::Debug::Print(2, "skipped");
    }
   }
   MySQLaccess::Debug::Print(1, "#Reading host-table...");
   foreach $record (@{$aref}) {
    my @record=split(/\t/,$record);
    my $host = $record[0];
    MySQLaccess::Debug::Print(2, "> $host ");
    if ( (!grep(/$host/,@host)) and ($host=~/$reg_expr/)) {
       push(@host,$host);
       MySQLaccess::Debug::Print(2, "added");
    } 
    else {
       MySQLaccess::Debug::Print(2, "skipped");
    }
   }
   # DOUBT:
   #print "#Reading user-table...\n" if ($DEBUG>1);
   #foreach $record (@MySQLaccess::Grant::sorted_user_table) {
   # my @record=split(/\t/,$record);
   # my $host = $record[0];
   # print "> $host " if ($DEBUG>2);
   # if ( (!grep(/$host/,@host)) and ($host=~/$reg_expr/)) {
   #    push(@host,$host);
   #    print "added\n" if ($DEBUG>2);
   # } 
   # else {
   #    print "skipped\n" if ($DEBUG>2);
   # }
   #}
   # Any host also means:
   # - any host still to be defined/created
   #push(@host,"any_other_host");

   @host = sort(@host);
   return \@host;
}


##########################################################################
package MySQLaccess::Grant;
##############
BEGIN {
    $DEBUG     = 0;
    $DEBUG     = $MySQLaccess::DEBUG unless ($DEBUG);
}



# ===========================================================
# sub Diff_Privileges()
#  Calculate diff between temporary and original grant-tables
# ===========================================================
sub Diff_Privileges {
   my @before=();
   my @after =();
   my @diffs =();

   # -----------------------------
   # Build list of users,dbs,hosts
   # to process...
   my @all_dbs   = @{MySQLaccess::DB::Get_All_dbs('*')};
   my @all_users = @{MySQLaccess::DB::Get_All_users('*')};
   my @all_hosts = @{MySQLaccess::DB::Get_All_hosts('*')};
   #if EDIT-mode
   my @all_dbs_tmp   = @{MySQLaccess::DB::Get_All_dbs('*','tmp')};
   my @all_users_tmp = @{MySQLaccess::DB::Get_All_users('*','tmp')};
   my @all_hosts_tmp = @{MySQLaccess::DB::Get_All_hosts('*','tmp')};


   my %Access;
   # ------------------------------------
   # Build list of priv. for grant-tables
   foreach $host (@all_hosts) {
     foreach $user (@all_users) {
       foreach $db (@all_dbs) {
         MySQLaccess::Grant::Initialize();
         %Access = MySQLaccess::Grant::Get_Access_Rights($host,$user,$db);	
         push(@before,MySQLaccess::Report::Raw_Report($host,$user,$db,\%Access));
       }
     }
   }

   # ----------------------------------
   # Build list of priv. for tmp-tables
   foreach $host (@all_hosts_tmp) {
     foreach $user (@all_users_tmp) {
       foreach $db (@all_dbs_tmp) {
         MySQLaccess::Grant::Initialize('tmp');
         %Access = MySQLaccess::Grant::Get_Access_Rights($host,$user,$db,'tmp');	
         push(@after,MySQLaccess::Report::Raw_Report($host,$user,$db,\%Access));
       }
     }
   }

   # ----------------------------------
   # Write results to temp-file to make
   # DIFF
   @before = sort(@before);
   @after  = sort(@after);

   ($hb, $before) = tempfile("$MySQLaccess::script.XXXXXX") or
    push(@MySQLaccess::Report::Errors,"Can't create temporary file: $!");
   ($ha, $after)  = tempfile("$MySQLaccess::script.XXXXXX") or
    push(@MySQLaccess::Report::Errors,"Can't create temporary file: $!");

   print $hb join("\n",@before);
   print $ha join("\n",@after);
   close $hb;
   close $ha;

   # ----------------------------------
   # compute difference
   my $cmd="$MySQLaccess::DIFF $before $after |";
   open(DIFF,"$cmd");
   @diffs = <DIFF>;
   @diffs = grep(/[<>]/,@diffs);
   chomp(@diffs);
   close(DIFF);

   # ----------------------------------
   # cleanup temp. files
   unlink($before);
   unlink($after);

   return \@diffs;
}

# ===========================================================
# sub Initialize()
#
# ===========================================================
sub Initialize {
    %MySQLaccess::Grant::Access       = %{Default_Access_Rights()};
    @MySQLaccess::Grant::Errors       = ();
    @MySQLaccess::Grant::Warnings     = ();
    @MySQLaccess::Grant::Notes        = ();
    # -----
    # rules
    $MySQLaccess::Grant::Rules{'user'} = 'no_rule_found';
    $MySQLaccess::Grant::Rules{'db'}   = 'no_rule_found';
    $MySQLaccess::Grant::Rules{'host'} = 'no_equiv_host';
    $MySQLaccess::Grant::full_access   = 1;

    $MySQLaccess::Grant::process_host_table = 0;
    return 1;
}

# ===========================================================
# sub ReadTables()
#  
# ===========================================================
sub ReadTables {
    my ($tmp) = @_;
    my ($HOST,$DB,$USER);
    my @tables;

    # build list of available tables
    @tables = MySQLaccess::DB::Show_Tables();

    # reading production grant-tables or temporary tables?
    $tmp = (defined($tmp) and $tmp) ? 1 : 0;
    if ($tmp) { #reading temporary tables
       $HOST=$MySQLaccess::ACCESS_H_TMP;
       $DB  =$MySQLaccess::ACCESS_D_TMP;
       $USER=$MySQLaccess::ACCESS_U_TMP;

       # ----------------------------
       # do tables exist?
       if (!grep(/$HOST/,@tables)) { MySQLaccess::DB::CreateTable($HOST); }
       if (!grep(/$USER/,@tables)) { MySQLaccess::DB::CreateTable($USER); }
       if (!grep(/$DB/,@tables))   { MySQLaccess::DB::CreateTable($DB); }

       MySQLaccess::Debug::Print(1,"Finding fields in tmp-ACL files:");
       # -----------------------------
       # Get record-layout 
       my ($h1,$h2) = MySQLaccess::DB::Show_Fields($HOST);
       my ($d1,$d2) = MySQLaccess::DB::Show_Fields($DB);
       my ($u1,$u2) = MySQLaccess::DB::Show_Fields($USER);
       %MySQLaccess::Grant::H_tmp = %{$h1}; @MySQLaccess::Grant::H_tmp = @{$h2};
       %MySQLaccess::Grant::D_tmp = %{$d1}; @MySQLaccess::Grant::D_tmp = @{$d2};
       %MySQLaccess::Grant::U_tmp = %{$u1}; @MySQLaccess::Grant::U_tmp = @{$u2};

#       @MySQLaccess::Grant::Privileges_tmp=@{Make_Privlist()};
#
       MySQLaccess::Debug::Print(1, "Reading sorted temp-tables:");
       @MySQLaccess::Grant::sorted_db_tmp_table  = MySQLaccess::DB::Sort_table($DB, 'ucase_host', 'user', 'db');
       @MySQLaccess::Grant::sorted_host_tmp_table= MySQLaccess::DB::Sort_table($HOST, 'ucase_host', 'db');
       @MySQLaccess::Grant::sorted_user_tmp_table= defined($MySQLaccess::Param{'password'}) ?
                           MySQLaccess::DB::Sort_table($USER, 'ucase_host', 'user', 'password'):
                           MySQLaccess::DB::Sort_table($USER, 'ucase_host', 'user');
    }
    else {      #reading production grant-tables
       $HOST=$MySQLaccess::ACCESS_H;
       $DB  =$MySQLaccess::ACCESS_D;
       $USER=$MySQLaccess::ACCESS_U;

       MySQLaccess::Debug::Print(1,"Finding fields in ACL files:");
       # -----------------------------
       # Get record-layout 
       my ($h1,$h2) = MySQLaccess::DB::Show_Fields($HOST);
       my ($d1,$d2) = MySQLaccess::DB::Show_Fields($DB);
       my ($u1,$u2) = MySQLaccess::DB::Show_Fields($USER);
       %MySQLaccess::Grant::H = %{$h1}; @MySQLaccess::Grant::H = @{$h2};
       %MySQLaccess::Grant::D = %{$d1}; @MySQLaccess::Grant::D = @{$d2};
       %MySQLaccess::Grant::U = %{$u1}; @MySQLaccess::Grant::U = @{$u2};

       @MySQLaccess::Grant::Privileges=@{Make_Privlist()};

       MySQLaccess::Debug::Print(1, "Reading sorted tables:");
       @MySQLaccess::Grant::sorted_db_table  = MySQLaccess::DB::Sort_table($DB, 'ucase_host', 'user', 'db');
       @MySQLaccess::Grant::sorted_host_table= MySQLaccess::DB::Sort_table($HOST, 'ucase_host', 'db');
       @MySQLaccess::Grant::sorted_user_table= defined($MySQLaccess::Param{'password'}) ?
                           MySQLaccess::DB::Sort_table($USER, 'ucase_host', 'user', 'password'):
                           MySQLaccess::DB::Sort_table($USER, 'ucase_host', 'user');
    }

    return 0;
}

# ===========================================================
# sub Get_Access_Rights(host,user,db)
#  report the access_rights for the tuple ($host,$user,$db).
# ===========================================================
sub Get_Access_Rights {
  local ($host,$user,$db,$tmp) = @_;

   my $aref_user;
   my $aref_host;
   my $aref_db;
   # working with  temporary tables or production tables
   if (defined($tmp) and $tmp) {
      $aref_user = \@MySQLaccess::Grant::sorted_user_tmp_table;
      $aref_host = \@MySQLaccess::Grant::sorted_host_tmp_table;
      $aref_db   = \@MySQLaccess::Grant::sorted_db_tmp_table;   
   }
   else {
      $aref_user = \@MySQLaccess::Grant::sorted_user_table;
      $aref_host = \@MySQLaccess::Grant::sorted_host_table;
      $aref_db   = \@MySQLaccess::Grant::sorted_db_table; 
   }


  my ($refrecord,$refgrant);
  my ($_host_,$_user_,$encpw_);
  my %_Access_;

  MySQLaccess::Debug::Print(1, "for ($host,$user,$db):");  

  # ******************************************************************************
  # Create default access-rights
  #   default access-rights are no access at all!!


  # ******************************************************************************
  # get hostname for IP-address
  # get IP-address for hostname
  local $host_name = MySQLaccess::Host::IP2Name($host);
  local $host_ip   = MySQLaccess::Host::Name2IP($host);

  MySQLaccess::Debug::Print(3,"host=$host, hostname=$host_name, host-ip =$host_ip");
  MySQLaccess::Debug::Print(3,"user=$user");
  MySQLaccess::Debug::Print(3,"db  =$db");

  # ***********************************************************************
  # retrieve information on USER
  #  check all records in mysql::user for matches with the tuple (host,user)
  # ***********************************************************************
  #    4.OR (add) the privileges for the user from the "user" table.
  #     (add all privileges which is "Y" in "user")
  ($refrecord,$refgrant)    = Get_grant_from_user($host,$user,$aref_user);
  ($_host_,$_user_,$encpw_) = @{$refrecord};
  %_access_                 = %{$refgrant};

  foreach $field (keys(%U)) { ##only priv. set in user-table
    $MySQLaccess::Grant::Access{$field} = ($MySQLaccess::Grant::Access{$field} or $_access_{$field});
  }

  if ($_user_ eq $MySQLaccess::NEW_USER) { 
     push(@Warnings,'minimum_priv');
  }
  if ($_user_ ne $user) {
     $user=$_user_;
     push(@Warnings,'anonymous_access');
  }

  # *******************************************************
  #  Validate password if this has been asked to do
  # *******************************************************
  if (defined($password)) {
     $valid = Validate_Password($password,$_host_,$_user_,$_encpw_,$aref_user);
     if (!$valid) { push(@Errors,'invalid_password'); }
     else         { push(@Notes,'valid_password'); }
  }

  # ******************************************************************************
  # retrieve information on DB
  #  check all records in mysql::db for matches with the triple (host,db,user)
  #  first match is used.
  # ******************************************************************************
  #    2.Get grant for user from the "db" table.

  ($refrecord,$refgrant)=Get_grant_from_db($host,$db,$user,$aref_db); #set process_host_table
  ($_host_,$_user_,$encpw_) = @{$refrecord};
  %_access_                 = %{$refgrant};

  foreach $field (keys(%D)) { ##only priv. set in db-table
    $MySQLaccess::Grant::Access{$field} = ($MySQLaccess::Grant::Access{$field} or $_access_{$field});
  }

  # ***********************************************************************
  # retrieve information on HOST
  #  check all records in mysql::host for matches with the tuple (host,db)
  #
  #  ' The host table is mainly to maintain a list of "secure" servers. '
  # ***********************************************************************
  #    3.If hostname is "empty" for the found entry, AND the privileges with
  #      the privileges for the host in "host" table.
  #      (Remove all which is not "Y" in both)

  if ($MySQLaccess::Grant::process_host_table) {
     ($refrecord,$refgrant)=Get_grant_from_host($host,$db,$aref_host);
     ($_host_,$_user_,$encpw_) = @{$refrecord};
     %_access_                 = %{$refgrant};

     foreach $field (keys(%H)) {  ##only priv. set in host-table 
       $MySQLaccess::Grant::Access{$field} = ($MySQLaccess::Grant::Access{$field} and $_access_{$field});
     } 
  }

  MySQLaccess::Debug::Print(1,"done for ($host,$user,$db)");
  return %MySQLaccess::Grant::Access;
}

# ####################################
# FINDING THE RIGHT GRANT-RULE
# ==========================================================
# sub Get_grant_from_user:
# ==========================================================
sub Get_grant_from_user {
  my ($host,$user,$aref) = @_;

  MySQLaccess::Debug::Print(1, "");
  MySQLaccess::Debug::Print(1, "(host=$host,user=$user)");

  my %Access_user = %{Default_Access_Rights()}; 

  my $rule_found=0;
  my @record = ();
  my $record;

  foreach $record (@{$aref}) {
    $MySQLaccess::Grant::full_access=0;
    MySQLaccess::Debug::Print(3, "Record= $record");
    @record=split(/\t/,$record);

    # check host and db
    # with possible wildcards in field
    # replace mysql-wildcards by reg-wildcards
    my $host_tpl = MySQLaccess::Wildcards::SQL2Reg($record[0]);
    my $user_tpl = $record[1]; #user field isn't pattern-matched!!
    my $passwd   = $record[2];

    MySQLaccess::Debug::Print(3, "=>host_tpl : read=$record[0] -> converted=$host_tpl");
    MySQLaccess::Debug::Print(3, "=>user_tpl : read=$record[1] -> $user_tpl");
    MySQLaccess::Debug::Print(3, "=>password : read=$record[2] -> $passwd");


    if ( MySQLaccess::Host::MatchTemplate($host,$host_tpl) and
         MySQLaccess::Wildcards::MatchTemplate($user_tpl,$user)
       ) 
    {
  MySQLaccess::Debug::Print(2, "FOUND!!");
        if ($passwd eq '') { push(@Warnings,'insecure_user');  }
        else               { push(@Notes,'password_required'); }

        foreach $field (keys(%U)) {
          $Access_user{$field} = $MySQLaccess::Report::Answer{$record[$U{$field}]};
        }
        #print "\n" if $DEBUG;
        $MySQLaccess::Grant::Rules{'user'} = $record;
        $rule_found=1;
        last;
    }
  }

  # -------------------------------
  #  setting privileges to user-priv
  MySQLaccess::Debug::Print(2, "Rights after parsing user-table..:");
  if (! $rule_found ) {
     @record=();
     MySQLaccess::Debug::Print(2, "NO record found in the user-table!!");
  }
  else {
     MySQLaccess::Debug::Print(2, "Selected record=@record");
     MySQLaccess::Debug::Print(2, "<=?=> $record");
  }
 
  MySQLaccess::Debug::Print(1, "returning @record");

  return (\@record,\%Access_user); #matching record in user-table
}

# ==========================================================
# sub Get_grant_from_db:
# ==========================================================
sub Get_grant_from_db {
  my ($host,$db,$user,$aref) = @_;

  MySQLaccess::Debug::Print(1, "(host=$host,user=$user,db=$db)");

  my %Access_db    = %{Default_Access_Rights()};
  my $rule_found=0;

  foreach $record (@{$aref}) {
    $full_access=0;
    MySQLaccess::Debug::Print(2, "Read db: $record");
    @record=split(/\t/,$record);

    # check host and db
    # with possible wildcards in field
    # replace mysql-wildcards by reg-wildcards
    my $host_tpl = MySQLaccess::Wildcards::SQL2Reg($record[0]);
    my $db_tpl   = MySQLaccess::Wildcards::SQL2Reg($record[1]);
    my $user_tpl = $record[2]; #user field isn't pattern matched!!
    MySQLaccess::Debug::Print(3, "=>host_tpl : read=$record[0] -> converted=$host_tpl");
    MySQLaccess::Debug::Print(3, "=>db_tpl   : read=$record[1] -> $db_tpl");
    MySQLaccess::Debug::Print(3, "=>user_tpl : read=$record[2] -> $user_tpl");

    if ( ( MySQLaccess::Host::Is_localhost($host_tpl)
           or  MySQLaccess::Wildcards::MatchTemplate($host_tpl,$host_name)
           or  MySQLaccess::Wildcards::MatchTemplate($host_tpl,$host_ip) )
         and ( MySQLaccess::Wildcards::MatchTemplate($db_tpl,$db) )
         and ( MySQLaccess::Wildcards::MatchTemplate($user_tpl,$user) ) ) {
 
      $MySQLaccess::Grant::process_host_table = ($record[0] eq '');

      if ($user_tpl eq '') { push(@Warnings,'public_database'); }

      foreach $field (keys(%D)) {
        $Access_db{$field} = $MySQLaccess::Report::Answer{$record[$D{$field}]};
      }
      $rule_found=1;
      $MySQLaccess::Grant::Rules{'db'} = $record;
      last;
    }
  }

  # -------------------------------
  #  setting privileges to db-priv
  MySQLaccess::Debug::Print(2, "Rights after parsing db-table..:");
  if (! $rule_found ) {
    MySQLaccess::Debug::Print(2, "NO rule found in db-table => no access granted!!");
  }

  return (\@record,\%Access_db);
}

# ==========================================================
# sub Get_grant_from_host:
# ==========================================================
sub Get_grant_from_host {
  my ($host,$db,$aref) = @_;

  MySQLaccess::Debug::Print(1, "Get_grant_from_host()");

  my %Access_host = %{Default_Access_Rights()};

  # the host-table doesn't have to be processed if the host-field
  # in the db-table isn't empty
  if (!$MySQLaccess::Grant::process_host_table) {
    MySQLaccess::Debug::Print(2, ">> Host-table doesn't have to be processed!!");
    $MySQLaccess::Grant::Rules{'host'} = 'no_equiv_host';
    return ([],\%Access_host);
  }

  my $rule_found=0;
  my @record = ();

  foreach $record (@{$aref}) {
    $full_access=0;
    MySQLaccess::Debug::Print(2, "host: $record");
    @record=split(/\t/,$record);

    # check host and db
    # with possible wildcards in field
    # replace mysql-wildcards by reg-wildcards
    my $host_tpl = MySQLaccess::Wildcards::SQL2Reg($record[0]);
    my $db_tpl   = MySQLaccess::Wildcards::SQL2Reg($record[1]);
    MySQLaccess::Debug::Print(3, "=>host_tpl : $record[0] -> $host_tpl");
    MySQLaccess::Debug::Print(3, "=>db_tpl   : $record[1] -> $db_tpl");

    if ( ( MySQLaccess::Host::Is_localhost($host_tpl)
           or MySQLaccess::Wildcards::MatchTemplate($host_tpl,$host_name)
           or MySQLaccess::Wildcards::MatchTemplate($host_tpl,$host_ip) )
         and ( MySQLaccess::Wildcards::MatchTemplate($db_tpl,$db) ) ) {

      $MySQLaccess::Grant::Rules{'host'} = $record;
      $rule_found=1;
      foreach $field (keys(%H)) {
        $Access_host{$field} = $MySQLaccess::Report::Answer{$record[$H{$field}]};
      }
      last;
    }
  }

  # -------------------------------
  #  setting privileges to host-priv
  MySQLaccess::Debug::Print(2, "Rights after parsing host-table..:");
  if (! $rule_found ) {
     @record=();
     MySQLaccess::Debug::Print(2, "NO restrictions found in the host-table!!");
  }

  # --------------------------------
  # debugging access-rights in db 

  return (\@record,\%Access_host); #matching record in host-table
}



# ===========================================================
# sub Default_Access_Rights():
#  return (a reference to) a hash which holds all default
#  priviliges currently defined in the grant-tables.
# ===========================================================
sub Default_Access_Rights {
    my %right = ();

    MySQLaccess::Debug::Print(2, "Debug Default_Access_Rights():");
    # add entry for all fields in the HOST-table
    foreach $field (keys(%MySQLaccess::Grant::H)) {
	$right{$field}='0' unless (defined($right{$field}));
    }
    # add entry for all fields in the DB-table
    foreach $field (keys(%MySQLaccess::Grant::D)) {
	$right{$field}='0' unless (defined($right{$field}));
    }
    # add entry for all fields in the USER-table
    foreach $field (keys(%MySQLaccess::Grant::U)) {
	$right{$field}='0' unless (defined($right{$field}));
    }
    # --------------
    # debugging info
    foreach $field (keys(%right)) { MySQLaccess::Debug::Print(3, sprintf("> %15s : %1s",$field,$right{$field})); }

    return \%right;
}

# ======================================
# sub Make_Privlist
#  Make an ordered list of the privileges
#  that should be reported
# ======================================
sub Make_Privlist {
    # layout:
    #'select_priv',     'create_priv',
    #'insert_priv',     'drop_priv',
    #'update_priv',     'reload_priv',
    #'delete_priv',     'process_priv',
    #'file_priv',       'shutdown_priv');
    my $right;
    my @privlist=();
    foreach $right (@U) {
	if (! grep(/$right/,@privlist)) { push(@privlist,$right); }
    };
    foreach $right (@D) {
	if (! grep(/$right/,@privlist)) { push(@privlist,$right); }
    };
    foreach $right (@H) {
	if (! grep(/$right/,@privlist)) { push(@privlist,$right); }
    };
#       print "Privileges:\n";
#       foreach $field (@privlist) { print " > $field\n"; }
    return \@privlist;
}



########################################################################
package MySQLaccess::Report;
use Exporter ();
@EXPORT = qw(&Print_Header());
BEGIN {
    $FORM = $ENV{'SCRIPT_NAME'};
    $DEBUG     = 0;
    $DEBUG     = $MySQLaccess::DEBUG unless ($DEBUG);

    # translation-table for poss. answers
    %Answer =  ('Y' =>  1 , 'N' =>  0
               , 1  => 'Y',  0  => 'N'
               ,'?' => '?', ''  => '?'
               );
    $headers   = 0;
    $separator = 0;

# ****************************
# Notes and warnings
%MESSAGES = ( 
  'insecure_user' 
   => "Everybody can access your DB as user `\$user' from host `\$host'\n"
     ."WITHOUT supplying a password.\n"
     ."Be very careful about it!!"
 ,'password_required' 
   => "A password is required for user `\$user' :-("
 ,'invalid_password'
   => "The password '\$password' for user `\$user' is invalid :-P"
 , 'valid_password'
   => "You supplied the right password for user `\$user' :-)"
 ,'public_database' 
   => "Any user with the appropriate permissions has access to your DB!\n"
     ."Check your users!"
 ,'full_access' 
   => "All grant-tables are empty, which gives full access to ALL users !!"
 ,'no_rule_found'
   => "No matching rule"
 ,'no_equiv_host' 
   => "Not processed: host-field is not empty in db-table."
 ,'least_priv'
   => "If the final priveliges of the user are more then you gave the user,\n"
     ."check the priveliges in the db-table `\$db'."
 ,'minimum_priv'
   => "The privileges for any new user are AT LEAST\n"
     ."the ones shown in the table above,\n"
     ."since these are the privileges of the db `\$db'.\n"
 ,'not_found_mysql'
   => "The MySQL client program <$MySQLaccess::MYSQL> could not be found.\n"
     ."+ Check your path, or\n"
     ."+ edit the source of this script to point \$MYSQL to the mysql client.\n"
 ,'not_found_mysqldump'
   => "The MySQL dump program <$MySQLaccess::MYSQLDUMP> could not be found.\n"
     ."+ Check your path, or\n"
     ."+ edit the source of this script to point \$MYSQLDUMP to the mysqldump program.\n"
 ,'not_found_diff'
   => "The diff program <$MySQLaccess::DIFF> could not be found.\n"
     ."+ Check your path, or\n"
     ."+ edit the source of this script to point \$DIFF to the diff program.\n"
 ,'Unrecognized_option'
   => "Sorry,\n"
     ."You are using an old version of the mysql-program,\n"
     ."which does not yet implement a neccessary option.\n"
     ."\n"
     ."You need at least Version 6.2 of the mysql-client,\n"
     ."which was build in MySQL v3.0.18, to use this version\n"
     ."of `$MySQLaccess::script'."
 ,'Access_denied'
   => "Sorry,\n"
     ."An error occurred when trying to connect to the database\n"
     ."with the grant-tables:\n"
     ."* Maybe YOU do not have READ-access to this database?\n"
     ."* If you used the -U option, you may have supplied an invalid username?\n"
     ."  for the superuser?\n"
     ."* If you used the -U option, it may be possible you have to supply\n"
     ."  a superuser-password to, with the -P option?\n"
     ."* If you used the -P option, you may have supplied an invalid password?\n"
 ,'Dbaccess_denied'
   => "Sorry,\n"
     ."An error occurred when trying to connect to the database\n"
     ."with the grant-tables. (dbaccess denied)\n"
 ,'Unknown_tmp_table'
   => "Sorry,\n"
     ."An error occurred when trying to work with the temporary tables in the database\n"
     ."with the grant-tables. (One of the temporary tables does not exist)\n"
 ,'Unknown_table'
   => "Sorry,\n"
     ."An error occurred when trying to work with some tables in the database\n"
     ."with the grant-tables. (table does not exist)\n"
 ,'use_old_server'
   => "Sorry,\n"
     ."An error occurred when executing an SQL statement.\n"
     ."You might consider altering the use of the parameter `--old_server' when \n"
     ."calling `$MySQLaccess::script'."
 ,'unknown_error'
   => "Sorry,\n"
     ."An error occurred when trying to connect to the database\n"
     ."with the grant-tables. (unknown error)\n"
 ,'anonymous_access'
   => "Accessing the db as an anonymous user.\n"
     ."Your username has no relevance\n"
 ,'user_required'
   => "You have to supply a userid."
 ,'db_required'
   => "You have to supply the name of a database."
 ,'host_required'
   => "You have to supply the name of a host."
 );


} 
# =====================================
# sub Print_Header:
#  print header info
# =====================================
sub Print_Header {
    if ($MySQLaccess::CMD) { #command-line mode
    print "$MySQLaccess::script Version $MySQLaccess::VERSION\n"
         ."By RUG-AIV, by Yves Carlier (Yves.Carlier\@rug.ac.be)\n"
         ."Changes by Steve Harvey (sgh\@vex.net)\n"
         ."This software comes with ABSOLUTELY NO WARRANTY.\n";
    }
    if ($MySQLaccess::CGI) { #CGI-BIN mode
    print "content-type: text/html\n\n" 
       . "<HTML>\n"
         ."<HEAD>\n"
         ."<TITLE>MySQLaccess</TITLE>\n"
         ."</HEAD>\n"
         ."<BODY>\n"
         ."<H1>$MySQLaccess::script Version $MySQLaccess::VERSION</H1>\n" 
         ."<CENTER>\n<ADDRESS>\n"
         ."By RUG-AIV, by Yves Carlier (<a href=mailto:Yves.Carlier\@rug.ac.be>Yves.Carlier\@rug.ac.be</a>)<BR>\n"
         ."Changes by Steve Harvey (<a href=mailto:sgh\@vex.net>sgh\@vex.net</a>)<BR>\n"
         ."This software comes with ABSOLUTELY NO WARRANTY.<BR>\n"
         ."</ADDRESS>\n</CENTER>\n"
         ."<HR>\n";
    Print_Taskbar();
    print "<HR>\n";
    }
    return 1;
}

# =====================================
# sub Print_Footer:
#  print footer info
# =====================================
sub Print_Footer {
    if ($MySQLaccess::CMD) { #command-line mode
    print "\n"
         ."BUGs can be reported at https://jira.mariadb.org\n";
    }
    if ($MySQLaccess::CGI) { #CGI-BIN mode
    if ($MySQLaccess::Param{'brief'}) {
    print "</table>\n";  #close table in brief-output
    }
    print "<HR>\n"
         ."<ADDRESS>\n"
         ."BUGs can be reported at <a href=\"https://jira.mariadb.org\">MariaDB JIRA</a><BR>\n"
#         ."Don't forget to mention the version $VERSION!<BR>\n"
         ."</ADDRESS>\n"
         ."</BODY>\n"
         ."</HTML>\n";
    }
    return 1;
}

# =====================================
# sub Print_Taskbar:
#  print taskbar on STDOUT
# =====================================
sub Print_Taskbar {
    print "<CENTER>\n"
         ."[<a href=$FORM?relnotes=on>Release&nbsp;Notes</a>] \n"
         ."[<a href=$FORM?version=on>Version</a>] \n"
         ."[<a href=$FORM?plan=on>Future&nbsp;Plans</a>] \n"
         ."[<a href=$FORM?howto=on>Examples</a>] \n"
         ."[<a href=$FORM?help=on>New check</a>] \n"
         ."[<a href=$FORM?edit=on>Change/edit ACL</a>] \n"
         ."</CENTER>\n";
    return 1;
}

# =====================================
# sub Print_Form:
#  print CGI-form
# =====================================
sub Print_Form {
print <<EOForm;
<center>
<!-- Quering -->
<FORM method=POST action=$FORM>

<table border width="100%" >
<tr>
  <th>MySQL server</th>
  <th>User information</th>
  <th>Reports</th>
  </tr>

<tr>
  <td valign=top>
  <table>
  <tr>
    <td halign=right><b>Host</b><br><font size=-2>(Host on which MySQL-server resides.)</font></td>
    <td valign=top><INPUT name=rhost type=text size=15 maxlength=15 value="$MySQLaccess::Param{'rhost'}"></td>
    </tr>
  <tr>
    <td halign=right><b>Superuser</b><br><font size=-2>(User which has <font color="Red">read-access</font> to grant-tables.)</font></td>
    <td valign=top><INPUT name=superuser type=text size=15 maxlength=15 value="$MySQLaccess::Param{'superuser'}"></td>
    </tr>
  <tr>
    <td halign=right><b>Password</b><br><font size=-2>(of Superuser.)</font></td>
    <td valign=top><INPUT name=spassword type=password size=15 maxlength=15 value="$MySQLaccess::Param{'spassword'}"></td>
    </tr>
  </table>
  </td>

  <td valign=top>
  <table>
  <tr>
    <td halign=right><b><font color=Red>User</font></b><br><font size=-2>(Userid used to connect to MySQL-database.)</font></td>
    <td halign=top><INPUT name=user type=text size=15 maxlength=15 value="$MySQLaccess::Param{'user'}"></td>
    </tr>
  <tr>
    <td halign=right><b>Password</b><br><font size=-2>(Password user has to give to get access to MySQL-database.)</font></td>
    <td valign=top><INPUT name=password type=password size=15 maxlength=15 value="$MySQLaccess::Param{'password'}"></td>
    </tr>
  <tr>
    <td halign=right><b><font color=Red>Database</font></b><br><font size=-2>(Name of MySQL-database user tries to connect to.</font><br><font size=-2>Wildcards <font color="Green">(*,?,%,_)</font> are allowed.)</font></td>
    <td valign=top><INPUT name=db type=text size=15 maxlength=15 value="$MySQLaccess::Param{'db'}"></td>
    </tr>
  <tr>
    <td halign=right><b>Host</b><br><font size=-2>(Host from where the user is trying to connect to MySQL-database.</font><br><font size=-2>Wildcards <font color="Green">(*,?,%,_)</font> are allowed.)</font></td>
    <td valign=top><INPUT name=host type=text size=15 maxlength=15 value="$MySQLaccess::Param{'host'}"></td>
    </tr>
  </table>
  </td>

  <td valign=center>
  <table cellspacing=5 cellpadding=2 cols=1 height="100%">
  <tr align=center>
    <td halign=right><INPUT type=submit name=brief value="Brief"><br>
                     <INPUT type=submit name=table value="Tabular"></td>
    </tr>
  <tr align=center>
    <td></td>
    </tr>
  <tr align=center>
    <td halign=right><INPUT type=reset value="Clear"></td>
    </tr>
  </table>
  </td>
  </tr>

</table>
</form>


</BODY>
</HTML>
EOForm
    return 1;
}

# =====================================
# sub Print_Usage:
#  print some information on STDOUT
# =====================================
sub Print_Usage {
    Print_Error_Messages();
    if ($MySQLaccess::CMD) { #command-line mode
        Print_Options();
    }
    if ($MySQLaccess::CGI) { #CGI-BIN mode
        Print_Form();
    }    
    return 1;
}

# ======================================
# sub Print_Version:
# ======================================
sub Print_Version {
    if ($MySQLaccess::CMD) {
       print $MySQLaccess::INFO;
    }
    if ($MySQLaccess::CGI) { 
       print "<PRE>\n"; 
       print $MySQLaccess::INFO;
       print "</PRE>\n"; 
    }
    return 1;
}

# ======================================
# sub Print_Relnotes:
# ======================================
sub Print_Relnotes {
    if ($MySQLaccess::CMD) {
       print $MySQLaccess::RELEASE;
    }
    if ($MySQLaccess::CGI) { 
       print "<PRE>\n";
       print $MySQLaccess::RELEASE;
       print "</PRE>\n"; 
    }
    return 1;
}

# ======================================
# sub Print_Plans:
# ======================================
sub Print_Plans {
    if ($MySQLaccess::CMD) {
       print $MySQLaccess::TODO;
    }
    if ($MySQLaccess::CGI) { 
       print "<PRE>\n";
       print $MySQLaccess::TODO;
       print "</PRE>\n"; 
    }
    return 1;
}

# ======================================
# sub Print_HowTo:
# ======================================
sub Print_HowTo {
    if ($MySQLaccess::CMD) {
       print $MySQLaccess::HOWTO;
    }
    if ($MySQLaccess::CGI) { 
       print "<PRE>\n"; 
       print $MySQLaccess::HOWTO;
       print "</PRE>\n"; 
    }
    return 1;
}

# ======================================
# sub Print_Options:
# ======================================
sub Print_Options {
    if ($MySQLaccess::CGI) { print "<PRE>\n"; }
    print $MySQLaccess::OPTIONS;
    if ($MySQLaccess::CGI) { print "</PRE>\n"; }
    return 1;
}

# ======================================
# sub Print_Error_Access:
# ======================================
sub Print_Error_Access {
    my ($error) = @_;
    print "\n";
    if ($MySQLaccess::CGI) { print "<font color=Red>\n<PRE>\n"; }
    print $MESSAGES{$error};
    if ($MySQLaccess::CGI) { print "</PRE>\n</font>\n"; }
    print "\n";
    return 1;
}

# ======================================
# sub Print_Error_Messages:
# ======================================
sub Print_Error_Messages {
#    my ($error) = @_;
    print "\n";
    if ($MySQLaccess::CGI) { print "<font color=Red>\n<center>\n"; }
    foreach $error (@MySQLaccess::Grant::Error) {
       print $MESSAGES{$error};
       print $MySQLaccess::CGI ? "<br>\n" : "\n";
    }
    if ($MySQLaccess::CGI) { print "</center>\n</font>\n"; }
    print "\n";
    return 1;
}

# ======================================
# sub Print_Message:
# ======================================
sub Print_Message {
    my ($aref) = @_;
    my @messages = @{$aref};
    print "\n";
    if ($MySQLaccess::CGI) { print "<font color=DarkGreen>\n<center>\n"; }
    foreach $msg (@messages) {
       print $msg;
       print $MySQLaccess::CGI ? "<br>\n" : "\n";
    }
    if ($MySQLaccess::CGI) { print "</center>\n</font>\n"; }
    print "\n";
    return 1;
}

# ======================================
# sub Print_Edit:
# ======================================
sub Print_Edit {
    print "\n";
    if (!$MySQLaccess::CGI) { 
       print "Note: Editing the temporary tables is NOT supported in CMD-line mode!\n";
       return 0;
    }
    print "<CENTER>\n"
         ."<form action=$FORM method=GET>\n"
         ."<table width=90% border>\n"
         ."<tr>\n"
         ." <td><input type=checkbox name=copy value=on> Copy grant-rules to temporary tables<br></td>\n"
         ." <td rowspan=5 align=center valign=center><input type=submit value=Go></td>\n"
         ."</tr>\n"
         ."<tr>\n"
         ." <td> Edit temporary tables with external application:<br>"
         ." <a href=\"$MySQLaccess::MYSQLADMIN\">$MySQLaccess::MYSQLADMIN</a></td>\n"
         ."</tr>\n"
         ."<tr>\n"
         ." <td><input type=checkbox name=preview value=on> Preview changes made in temporary tables</td>\n"
         ."</tr>\n"
         ."<tr>\n"
         ." <td><input type=checkbox name=commit value=on> Make changes permanent</td>\n"
         ."</tr>\n"
         ."<tr>\n"
         ." <td><input type=checkbox name=rollback value=on> Restore previous grand-rules</td>\n"
         ."</tr>\n"
         ."<tr>\n"
         ." <td colspan=2 align=center><font size=-2 color=Red>You need write,delete and drop-privileges to perform the above actions</font></td>\n"
         ."</tr>\n"
         ."</table>\n"
         ."</form>\n"
         ."</CENTER>\n";

    return 1;
}


# ======================================
# sub Print_Access_rights:
#  print the access-rights on STDOUT
# ======================================
sub Print_Access_rights {
    my ($host,$user,$db,$refhash) = @_;

    if (defined($MySQLaccess::Param{'brief'})) { 
#       if ($MySQLaccess::CGI) { print "<PRE>\n"; }
       Matrix_Report($host,$user,$db,$refhash);  
#       if ($MySQLaccess::CGI) { print "</PRE>\n"; }
    }
    else { 
       Tabular_Report($host,$user,$db,$refhash); 
       $MySQLaccess::Report::separator = $MySQLaccess::CGI ? "<hr>" : "-"x80;
    }
    return 1;
}

# ======================================
# sub Print_Diff_ACL:
#  print the diff. in the grants before and after
# ======================================
sub Print_Diff_ACL {
    my ($aref) = @_;
    my @diffs = @{$aref};
    my %block = ( '<' => 'Before',
                  '>' => 'After',
                );
    my %color = ( '<' => 'Green',
                  '>' => 'Red',
                ); 
    my $curblock = '';

    # -----------------------------
    # create column-headers
    foreach $field (@MySQLaccess::Grant::Privileges) {
      push(@headers,substr($field,0,4));
    }

    if ($MySQLaccess::CMD) {
    print "\n";
    print "Differences in access-rights BEFORE and AFTER changes in grant-tables\n";
#    print "---------------------------------------------------------------------\n";
      my $line1="";
      my $line2="";
      $line1 .= sprintf("| %-30s|",'Host,User,DB');
      $line2 .= sprintf("+-%-30s+",'-' x 30);
      foreach $header (@headers) {
        $line1 .= sprintf("%-4s|",$header);
        $line2 .= sprintf("%s+",'----');
      }
      print "$line2\n";
      print "$line1\n";
      print "$line2\n";

      $format = "format STDOUT = \n"
              . "^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< " . " @|||" x 10 ."\n"
              . '$host_user_db,@priv' . "\n"
              . ".\n";
#print $format;
      eval $format;
    }
    if ($MySQLaccess::CGI) {
    print "<table border width=100%>\n";
    print "<tr>\n";
    print "<th colspan=11>";
    print "Differences in access-rights <font color=$color{'<'}>BEFORE</font> "
         ."and <font color=$color{'>'}>AFTER</font> changes to grant-tables</font>\n";
    print "</th>";
    print "</tr>\n";
    print "<tr>\n";    
    $line1 .= sprintf("<th>%-20s</th>",'Host, User, DB');
    foreach $header (@headers) {
      $line1 .= sprintf("<th>%-4s</th>",$header);
    }
    print "$line1</tr>\n";
    }

    foreach $line (@diffs) {
        $type = substr($line,0,1);
        $line = substr($line,1);
        ($host,$user,$db,@priv) = split(/,/,$line);
        if ($MySQLaccess::CMD) {
           if ($type ne $curblock) {
              $curblock = $type;
              print $block{$curblock},":\n";
           }
           #print "$line\n";
           write;
        }
        if ($MySQLaccess::CGI) {
           if ($type ne $curblock) {
              $curblock = $type;
              print "<tr><td><b>$block{$curblock}<b></td></tr>\n";
           }
           $line1="<td><font color=$color{$type}>$host, $user, $db</font></td>";
           foreach $field (@priv) {
              $line1 .= sprintf("<td align=center><font color=$color{$type}>%-4s</font></td>",$field);
           }
           print "<tr>$line1</tr>\n";
        }
    }
    print      "\n";
    if ($MySQLaccess::CMD) {
    print "---------------------------------------------------------------------\n";
    }
    if ($MySQLaccess::CGI) {
    print      "</table><br>";
    }


    return 1;
}

# ======================================
# sub Tabular_Report
#  Tabular report,
#  suitable for 1 triple (host,db,user)
# ======================================
sub Tabular_Report {
    my ($host,$user,$db,$a) = @_;
    my $column=2;

    # -----------------------------
    # separator
    if ($MySQLaccess::Report::separator) { print "$MySQLaccess::Report::separator\n"; }
    
    # -----------------------------
    # print table of access-rights
    my $rows = int(@MySQLaccess::Grant::Privileges/2);  #round up
    my @table=();
    $j=0;
    for $i (0 .. $rows-1) {
      $table[$j]=$MySQLaccess::Grant::Privileges[$i];
      $j = $j+2;
    }
    $j=1;
    for $i ($rows .. $#MySQLaccess::Grant::Privileges) {
      $table[$j]=$MySQLaccess::Grant::Privileges[$i];
      $j = $j+2;
    }
    if ($MySQLaccess::CMD) {
    print "\n";
    print "Access-rights\n";
    print "for USER '$user', from HOST '$host', to DB '$db'\n";
    }
    if ($MySQLaccess::CGI) {
    print "<table border width=100%>\n";
    print "<tr>\n";
    }
    if ($MySQLaccess::CGI) {
    print "<th colspan=5>";
    print "<font color=Red>Access-rights</font>\n";
    print "for USER '<font color=Green>$user</font>', from HOST '<font color=Green>$host</font>', to DB '<font color=Green>$db</font>'\n";
    print "</th>";
    print "</tr>\n";
    print "<tr>\n";
    }
    if ($MySQLaccess::CMD) {
    print      "\t+-----------------+---+\t+-----------------+---+";
    }
    foreach $field (@table) {
        if ($MySQLaccess::CMD) {
          if ($column==2) { print "\n\t"; $column=1;}
          else            { print "\t";   $column=2;}
          printf "| %-15s | %s |",$field,$Answer{$a->{$field}}; 
        }
        if ($MySQLaccess::CGI) {
          if ($column==2) { print "</tr>\n<tr>\n"; $column=1;}
          else            { print "<td width=10%></td>";   $column=2;}
          printf " <td width=35%><b>%-15s</b></td><td width=10%>%s</td>\n",$field,$Answer{$a->{$field}}; 
        }
    }
    print      "\n";
    if ($MySQLaccess::CMD) {
    print      "\t+-----------------+---+\t+-----------------+---+\n";
    }
    if ($MySQLaccess::CGI) {
    print      "</tr>\n</table><br>";
    }

    # ---------------
    # print notes:
    foreach $note (@MySQLaccess::Grant::Notes) {
      my $message = $MESSAGES{$note};
      $message =~ s/\$user/$user/g; 
      $message =~ s/\$db/$db/g;
      $message =~ s/\$host/$host/g;
      $message =~ s/\$password/$password/g;
      $PREFIX='NOTE';
      if ($MySQLaccess::CMD) {
      my @lines = split(/\n/,$message);
      foreach $line (@lines) { 
        print "$PREFIX:\t $line\n"; 
        $PREFIX='    ';
      }
      }
      if ($MySQLaccess::CGI) {
      print "<b>$PREFIX:</b> $message<br>\n";
      }
    } 

    # ---------------
    # print warnings:
    foreach $warning (@MySQLaccess::Grant::Warnings) {
      my $message = $MESSAGES{$warning};
      $message =~ s/\$user/$user/g;
      $message =~ s/\$db/$db/g;
      $message =~ s/\$host/$host/g;
      $message =~ s/\$password/$password/g;
      $PREFIX='BEWARE';
      if ($MySQLaccess::CMD) {
      my @lines = split(/\n/,$message);
      foreach $line (@lines) { 
        print "$PREFIX:\t $line\n"; 
        $PREFIX='      ';
      }
      }
      if ($MySQLaccess::CGI) {
      print "<b>$PREFIX:</b> $message<br>\n";
      }
    }

    # ---------------
    # print errors:
    foreach $error (@MySQLaccess::Grant::Errors) {
      my $message = $MESSAGES{$error};
      $message =~ s/\$user/$user/g;
      $message =~ s/\$db/$db/g;
      $message =~ s/\$host/$host/g;
      $message =~ s/\$password/$password/g;
      $PREFIX='ERROR';
      if ($MySQLaccess::CMD) {
      my @lines = split(/\n/,$message);
      foreach $line (@lines) { 
        print "$PREFIX:\t $line\n"; 
        $PREFIX='    ';
      }
      }
      if ($MySQLaccess::CGI) {
      print "<b>$PREFIX:</b> $message<br>\n";
      }
    }

    # ---------------
    # inform if there are no rules ==> full access for everyone.
    if ($MySQLaccess::Grant::full_access) { print "$MESSAGES{'full_access'}\n"; }

    # ---------------
    # print the rules used
    print "\n";
    if ($MySQLaccess::CMD) {
    print "The following rules are used:\n";
    foreach $field (sort(keys(%MySQLaccess::Grant::Rules))) {
      my $rule = (defined($MESSAGES{$MySQLaccess::Grant::Rules{$field}}) ? $MESSAGES{$MySQLaccess::Grant::Rules{$field}} : $MySQLaccess::Grant::Rules{$field});
      $rule =~ s/\t/','/g;
      printf " %-5s : '%s'\n",$field,$rule;
    }
    }
    if ($MySQLaccess::CGI) {
    print "<br>\n";
    print "<table border width=100%>\n";
    print "<tr><th colspan=2>The following rules are used:</th></tr>\n";
    foreach $field (sort(keys(%MySQLaccess::Grant::Rules))) {
      my $rule = (defined($MESSAGES{$MySQLaccess::Grant::Rules{$field}}) ? $MESSAGES{$MySQLaccess::Grant::Rules{$field}} : $MySQLaccess::Grant::Rules{$field});
      $rule =~ s/\t/','/g;
      printf "<tr><th>%-5s</th><td>'%s'</td></tr>\n",$field,$rule;
    }
    print "</table>\n";
    }
 
    return 1;
}

# ======================================
# sub Matrix_Report:
#  single-line output foreach triple,
#  no notes,warnings,...
# ======================================
sub Matrix_Report {
    my ($host,$user,$db,$a) = @_;
    my @headers = ();
    
    if (! $headers) {
       # -----------------------------
       # create column-headers
       foreach $field (@MySQLaccess::Grant::Privileges) {
         push(@headers,substr($field,0,4));
       }
    
       # -----------------------------
       # print column-headers
       print "\n";
       if ($MySQLaccess::CMD) {
         my $line1="";
         my $line2="";
         foreach $header (@headers) {
           $line1 .= sprintf("%-4s ",$header);
           $line2 .= sprintf("%s ",'----');
         }
         $line1 .= sprintf("| %-20s",'Host,User,DB');
         $line2 .= sprintf("+ %-20s",'-' x 20);
         print "$line1\n";
         print "$line2\n";
       }
       if ($MySQLaccess::CGI) {
         print "<table width=100% border>\n";
         my $line1="<tr>";
         foreach $header (@headers) {
           $line1 .= sprintf("<th>%-4s</th>",$header);
         }
         $line1 .= sprintf("<th>%-20s</th>",'Host, User, DB');
         print "$line1</tr>\n";
       }

       # ----------------------------
       # column-headers should only be 
       # printed once.
       $MySQLaccess::Report::headers=1;
    }

    # ------------------------
    # print access-information
    if ($MySQLaccess::CMD) {
      foreach $field (@MySQLaccess::Grant::Privileges) {
  	  printf " %-2s  ",$Answer{$a->{$field}}; 
      }
      printf "| %-20s",join(',',$host,$user,$db);
      print "\n";
    }
    if ($MySQLaccess::CGI) {
      print "<tr>";
      foreach $field (@MySQLaccess::Grant::Privileges) {
  	  printf "<td align=center>%-2s</td>",$Answer{$a->{$field}}; 
      }
      printf "<td><b>%-20s</b></td>",join(', ',$host,$user,$db);
      print "</tr>\n";
    }

    return 1;
}


# ======================================
# sub Raw_Report:
#  single-line output foreach triple,
#  no notes,warnings,...
# ======================================
sub Raw_Report {
    my ($host,$user,$db,$a) = @_;
    my @headers = ();
    my $string = "";
    
    # ------------------------
    # print access-information
    $string = "$host,$user,$db,";
    foreach $field (@MySQLaccess::Grant::Privileges) {
	  $string .= $Answer{$a->{$field}} . ","; 
    }
    return $string;
}


#######################################################################
package MySQLaccess::Wildcards;
BEGIN {
    $DEBUG     = 0;
    $DEBUG     = $MySQLaccess::DEBUG unless ($DEBUG);
}
# ############################################
# SQL, WILDCARDS and REGULAR EXPRESSIONS 
# ============================================
# translage SQL-expressions to Reg-expressions
# ============================================
sub SQL2Reg {
    my ($expr) = @_;
    my $expr_o = $expr;
    $expr  =~ s/\./\\./g;
    $expr  =~ s/\\%/\002/g;
    $expr  =~ s/%/.*/g;
    $expr  =~ s/\002/%/g;
    $expr  =~ s/\\_/\002/g;
    $expr  =~ s/_/.+/g;
    $expr  =~ s/\002/_/g;
    MySQLaccess::Debug::Print(2,"$expr_o --> $expr");
    return $expr;
}

# translage WILDcards to Reg-expressions
# ============================================
sub Wild2Reg {
    my ($expr) = @_;
    my $expr_o = $expr;
    $expr  =~ s/\./\\./g;
    $expr  =~ s/\\\*/\002/g;
    $expr  =~ s/\*/.*/g;
    $expr  =~ s/\002/*/g;
    $expr  =~ s/\\\?/\002/g;
    $expr  =~ s/\?/.+/g;
    $expr  =~ s/\002/?/g;
    MySQLaccess::Debug::Print(2,"$expr_o --> $expr");
    return $expr;
}

# =============================================
# match a given string with a template
# =============================================
sub MatchTemplate {
    my ($tpl,$string) = @_;
    my $match=0;
    if ($string=~ /^$tpl$/ or $tpl eq '') { $match=1; }
    else                                  { $match=0;}
    MySQLaccess::Debug::Print(2,"($tpl,$string) --> $match");
    return $match;
}

#######################################################################
package MySQLaccess::Host;
BEGIN {
    $localhost = undef;
    $DEBUG     = 2;
    $DEBUG     = $MySQLaccess::DEBUG unless ($DEBUG);
}
# ======================================
# sub IP2Name
#  return the Name with the corr. IP-nmbr
#  (no aliases yet!!)
# ======================================
sub IP2Name {
    my ($ip) = @_;
    my $ip_o = $ip;
    if ($ip !~ /([0-9]+)\.([0-9]+)\.([0-9]+)\.([0-9]+)/o) {
       MySQLaccess::Debug::Print(3,"'$ip' is not an ip-number, returning IP=$ip");
       return $ip;
    }
    MySQLaccess::Debug::Print(4,"IP=$ip split up => $1.$2.$3.$4");
    $ip = pack "C4",$1,$2,$3,$4;
    MySQLaccess::Debug::Print(4,"IP packed -> >>$ip<<\n");
    my ($name,$aliases,$addrtype,$length,@addrs) = gethostbyaddr($ip, AF_INET);
    MySQLaccess::Debug::Print(3,"IP=$ip_o => hostname=$name");
    MySQLaccess::Debug::Print(4,"aliases=$aliases");
    MySQLaccess::Debug::Print(4,"addrtype=$addrtype - length=$length");
    return ($name || $ip);
    #return ($name || undef);
}

# ======================================
# sub Name2IP
#  return the IP-number of the host
# ======================================
sub Name2IP {
    my ($name) = @_;
    if ($name =~ /[%_]/) { 
       MySQLaccess::Debug::Print(3,"'$name' contains SQL-wildcards, returning name=$name");
       return $name; 
    }
    my ($_name,$aliases,$addrtype,$length,@addrs) = gethostbyname($name);
    my ($a,$b,$c,$d) = unpack('C4',$addrs[0]);
    my $ip = "$a.$b.$c.$d";
    MySQLaccess::Debug::Print(3,"hostname=$name => IP=$ip");
    MySQLaccess::Debug::Print(4,"aliases=$aliases");
    MySQLaccess::Debug::Print(4,"addrtype=$addrtype - length=$length");
    #if ($ip ne "") { return "$ip"; }
    #else           { return undef; }
    return ($ip || $name);
}

# ========================================
# sub LocalHost
#  some special action has to be taken for
#  the localhost
# ========================================
sub LocalHost {
    if (!defined($MySQLaccess::Host::localhost)) {
       $MySQLaccess::Host::localhost = Sys::Hostname::hostname();
       MySQLaccess::Debug::Print(3,"Setting package variable \$localhost=$MySQLaccess::Host::localhost");
    }
    my $host = $localhost;
    MySQLaccess::Debug::Print(3,"localhost = $host");
    return $host;
}

# ========================================
# check if the given hostname (or ip)
# corresponds with the localhost
# ========================================
sub Is_localhost {
    my ($host_tpl) = @_;
    my $isit = 0;
    if (($MySQLaccess::host_name eq $localhost) or ($MySQLaccess::host_ip eq $local_ip)) {
	MySQLaccess::Debug::Print(2,"Checking for localhost");
      MySQLaccess::Debug::Print(3,"because ($MySQLaccess::host_name EQ $localhost) AND ($MySQLaccess::host_ip EQ $local_ip)");
      $isit = ( 'localhost' =~ /$host_tpl/ ) ? 1 : 0;
      MySQLaccess::Debug::Print(3," 'localhost' =?= $host_tpl  -> $isit");
      return $isit;
    }
    else {
      MySQLaccess::Debug::Print(4,"Not checking for localhost");
      MySQLaccess::Debug::Print(4,"because ($MySQLaccess::host_name != $localhost) AND ($MySQLaccess::host_ip != $local_ip)");
      return 0;
    }
}


# =========================================
# check if host (IP or name) can be matched
# on the template.
# =========================================
sub MatchTemplate {
    my ($host,$tpl) = @_;
    my $match = 0;
   
    MySQLaccess::Debug::Print(1, "($host) =?= ($tpl)");

    my $host_name = IP2Name($host);
    my $host_ip   = Name2IP($host);

    MySQLaccess::Debug::Print(2, "name=$host_name ; ip=$host_ip");
    $match = (MySQLaccess::Wildcards::MatchTemplate($tpl,$host_name) or
             MySQLaccess::Wildcards::MatchTemplate($tpl,$host_ip));

    MySQLaccess::Debug::Print(2, "($host_name,$host_ip) =?= ($tpl): $ncount");

    return $match;
}

########################################################################
package MySQLaccess::Debug;
BEGIN {
   my $dbg_file = "$MySQLaccess::script_log";
   open(DEBUG,"> $dbg_file") or warn "Could not open outputfile $dbg_file for debugging-info\n";
   select DEBUG;
   $| = 1;
   select STDOUT;
}
# =========================================
# Print debugging information on STDERR
# =========================================
sub Print {
    my ($level,$mesg) = @_;
    my ($pack,$file,$line,$subname,$hasargs,$wantarray) = caller(1);
    my ($PACK)  = split('::',$subname); 
    my $DEBUG = ${$PACK."::DEBUG"} ? ${$PACK."::DEBUG"} : $MySQLaccess::DEBUG ;
    my ($sec,$min,$hour) = localtime();
    print DEBUG "[$hour:$min:$sec $subname] $mesg\n" if ($DEBUG>=$level);
}