summaryrefslogtreecommitdiffstats
path: root/PC/bdist_wininst/install.c
blob: 2b1deefa4c38dece36f837f2f17d997f2019ac87 (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
/*
  IMPORTANT NOTE: IF THIS FILE IS CHANGED, WININST-6.EXE MUST BE RECOMPILED
  WITH THE MSVC6 WININST.DSW WORKSPACE FILE MANUALLY, AND WININST-7.1.EXE MUST
  BE RECOMPILED WITH THE MSVC 2003.NET WININST-7.1.VCPROJ FILE MANUALLY.

  IF CHANGES TO THIS FILE ARE CHECKED INTO PYTHON CVS, THE RECOMPILED BINARIES
  MUST BE CHECKED IN AS WELL!
*/

/*
 * Written by Thomas Heller, May 2000
 *
 * $Id$
 */

/*
 * Windows Installer program for distutils.
 *
 * (a kind of self-extracting zip-file)
 *
 * At runtime, the exefile has appended:
 * - compressed setup-data in ini-format, containing the following sections:
 *      [metadata]
 *      author=Greg Ward
 *      author_email=gward@python.net
 *      description=Python Distribution Utilities
 *      licence=Python
 *      name=Distutils
 *      url=http://www.python.org/sigs/distutils-sig/
 *      version=0.9pre
 *
 *      [Setup]
 *      info= text to be displayed in the edit-box
 *      title= to be displayed by this program
 *      target_version = if present, python version required
 *      pyc_compile = if 0, do not compile py to pyc
 *      pyo_compile = if 0, do not compile py to pyo
 *
 * - a struct meta_data_hdr, describing the above
 * - a zip-file, containing the modules to be installed.
 *   for the format see http://www.pkware.com/appnote.html
 *
 * What does this program do?
 * - the setup-data is uncompressed and written to a temporary file.
 * - setup-data is queried with GetPrivateProfile... calls
 * - [metadata] - info is displayed in the dialog box
 * - The registry is searched for installations of python
 * - The user can select the python version to use.
 * - The python-installation directory (sys.prefix) is displayed
 * - When the start-button is pressed, files from the zip-archive
 *   are extracted to the file system. All .py filenames are stored
 *   in a list.
 */
/*
 * Includes now an uninstaller.
 */

/*
 * To Do:
 *
 * display some explanation when no python version is found
 * instead showing the user an empty listbox to select something from.
 *
 * Finish the code so that we can use other python installations
 * additionally to those found in the registry,
 * and then #define USE_OTHER_PYTHON_VERSIONS
 *
 *  - install a help-button, which will display something meaningful
 *    to the poor user.
 *    text to the user
 *  - should there be a possibility to display a README file
 *    before starting the installation (if one is present in the archive)
 *  - more comments about what the code does(?)
 *
 *  - evolve this into a full blown installer (???)
 */

#include <windows.h>
#include <commctrl.h>
#include <imagehlp.h>
#include <objbase.h>
#include <shlobj.h>
#include <objidl.h>
#include "resource.h"

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <malloc.h>
#include <io.h>
#include <fcntl.h>

#include "archive.h"

/* Only for debugging!
   static int dprintf(char *fmt, ...)
   {
   char Buffer[4096];
   va_list marker;
   int result;

   va_start(marker, fmt);
   result = wvsprintf(Buffer, fmt, marker);
   OutputDebugString(Buffer);
   return result;
   }
*/

/* Bah: global variables */
FILE *logfile;

char modulename[MAX_PATH];

HWND hwndMain;
HWND hDialog;

char *ini_file;                 /* Full pathname of ini-file */
/* From ini-file */
char info[4096];                /* [Setup] info= */
char title[80];                 /* [Setup] title=, contains package name
                                   including version: "Distutils-1.0.1" */
char target_version[10];        /* [Setup] target_version=, required python
                                   version or empty string */
char build_info[80];            /* [Setup] build_info=, distutils version
                                   and build date */

char meta_name[80];             /* package name without version like
                                   'Distutils' */
char install_script[MAX_PATH];
char *pre_install_script; /* run before we install a single file */

char user_access_control[10]; // one of 'auto', 'force', otherwise none.

int py_major, py_minor;         /* Python version selected for installation */

char *arc_data;                 /* memory mapped archive */
DWORD arc_size;                 /* number of bytes in archive */
int exe_size;                   /* number of bytes for exe-file portion */
char python_dir[MAX_PATH];
char pythondll[MAX_PATH];
BOOL pyc_compile, pyo_compile;
/* Either HKLM or HKCU, depending on where Python itself is registered, and
   the permissions of the current user. */
HKEY hkey_root = (HKEY)-1;

BOOL success;                   /* Installation successful? */
char *failure_reason = NULL;

HANDLE hBitmap;
char *bitmap_bytes;


#define WM_NUMFILES WM_USER+1
/* wParam: 0, lParam: total number of files */
#define WM_NEXTFILE WM_USER+2
/* wParam: number of this file */
/* lParam: points to pathname */

static BOOL notify(int code, char *fmt, ...);

/* Note: If scheme.prefix is nonempty, it must end with a '\'! */
/* Note: purelib must be the FIRST entry! */
SCHEME old_scheme[] = {
    { "PURELIB", "" },
    { "PLATLIB", "" },
    { "HEADERS", "" }, /* 'Include/dist_name' part already in archive */
    { "SCRIPTS", "Scripts\\" },
    { "DATA", "" },
    { NULL, NULL },
};

SCHEME new_scheme[] = {
    { "PURELIB", "Lib\\site-packages\\" },
    { "PLATLIB", "Lib\\site-packages\\" },
    { "HEADERS", "" }, /* 'Include/dist_name' part already in archive */
    { "SCRIPTS", "Scripts\\" },
    { "DATA", "" },
    { NULL, NULL },
};

static void unescape(char *dst, char *src, unsigned size)
{
    char *eon;
    char ch;

    while (src && *src && (size > 2)) {
        if (*src == '\\') {
            switch (*++src) {
            case 'n':
                ++src;
                *dst++ = '\r';
                *dst++ = '\n';
                size -= 2;
                break;
            case 'r':
                ++src;
                *dst++ = '\r';
                --size;
                break;
            case '0': case '1': case '2': case '3':
                ch = (char)strtol(src, &eon, 8);
                if (ch == '\n') {
                    *dst++ = '\r';
                    --size;
                }
                *dst++ = ch;
                --size;
                src = eon;
            }
        } else {
            *dst++ = *src++;
            --size;
        }
    }
    *dst = '\0';
}

static struct tagFile {
    char *path;
    struct tagFile *next;
} *file_list = NULL;

static void set_failure_reason(char *reason)
{
    if (failure_reason)
    free(failure_reason);
    failure_reason = strdup(reason);
    success = FALSE;
}
static char *get_failure_reason()
{
    if (!failure_reason)
    return "Installation failed.";
    return failure_reason;
}

static void add_to_filelist(char *path)
{
    struct tagFile *p;
    p = (struct tagFile *)malloc(sizeof(struct tagFile));
    p->path = strdup(path);
    p->next = file_list;
    file_list = p;
}

static int do_compile_files(int (__cdecl * PyRun_SimpleString)(char *),
                             int optimize)
{
    struct tagFile *p;
    int total, n;
    char Buffer[MAX_PATH + 64];
    int errors = 0;

    total = 0;
    p = file_list;
    while (p) {
        ++total;
        p = p->next;
    }
    SendDlgItemMessage(hDialog, IDC_PROGRESS, PBM_SETRANGE, 0,
                        MAKELPARAM(0, total));
    SendDlgItemMessage(hDialog, IDC_PROGRESS, PBM_SETPOS, 0, 0);

    n = 0;
    p = file_list;
    while (p) {
        ++n;
        wsprintf(Buffer,
                  "import py_compile; py_compile.compile (r'%s')",
                  p->path);
        if (PyRun_SimpleString(Buffer)) {
            ++errors;
        }
        /* We send the notification even if the files could not
         * be created so that the uninstaller will remove them
         * in case they are created later.
         */
        wsprintf(Buffer, "%s%c", p->path, optimize ? 'o' : 'c');
        notify(FILE_CREATED, Buffer);

        SendDlgItemMessage(hDialog, IDC_PROGRESS, PBM_SETPOS, n, 0);
        SetDlgItemText(hDialog, IDC_INFO, p->path);
        p = p->next;
    }
    return errors;
}

#define DECLPROC(dll, result, name, args)\
    typedef result (*__PROC__##name) args;\
    result (*name)args = (__PROC__##name)GetProcAddress(dll, #name)


#define DECLVAR(dll, type, name)\
    type *name = (type*)GetProcAddress(dll, #name)

typedef void PyObject;


/*
 * Returns number of files which failed to compile,
 * -1 if python could not be loaded at all
 */
static int compile_filelist(HINSTANCE hPython, BOOL optimize_flag)
{
    DECLPROC(hPython, void, Py_Initialize, (void));
    DECLPROC(hPython, void, Py_SetProgramName, (char *));
    DECLPROC(hPython, void, Py_Finalize, (void));
    DECLPROC(hPython, int, PyRun_SimpleString, (char *));
    DECLPROC(hPython, PyObject *, PySys_GetObject, (char *));
    DECLVAR(hPython, int, Py_OptimizeFlag);

    int errors = 0;
    struct tagFile *p = file_list;

    if (!p)
        return 0;

    if (!Py_Initialize || !Py_SetProgramName || !Py_Finalize)
        return -1;

    if (!PyRun_SimpleString || !PySys_GetObject || !Py_OptimizeFlag)
        return -1;

    *Py_OptimizeFlag = optimize_flag ? 1 : 0;
    Py_SetProgramName(modulename);
    Py_Initialize();

    errors += do_compile_files(PyRun_SimpleString, optimize_flag);
    Py_Finalize();

    return errors;
}

typedef PyObject *(*PyCFunction)(PyObject *, PyObject *);

struct PyMethodDef {
    char        *ml_name;
    PyCFunction  ml_meth;
    int                  ml_flags;
    char        *ml_doc;
};
typedef struct PyMethodDef PyMethodDef;

// XXX - all of these are potentially fragile!  We load and unload
// the Python DLL multiple times - so storing functions pointers
// is dangerous (although things *look* OK at present)
// Better might be to roll prepare_script_environment() into
// LoadPythonDll(), and create a new UnloadPythonDLL() which also
// clears the global pointers.
void *(*g_Py_BuildValue)(char *, ...);
int (*g_PyArg_ParseTuple)(PyObject *, char *, ...);
PyObject * (*g_PyLong_FromVoidPtr)(void *);

PyObject *g_PyExc_ValueError;
PyObject *g_PyExc_OSError;

PyObject *(*g_PyErr_Format)(PyObject *, char *, ...);

#define DEF_CSIDL(name) { name, #name }

struct {
    int nFolder;
    char *name;
} csidl_names[] = {
    /* Startup menu for all users.
       NT only */
    DEF_CSIDL(CSIDL_COMMON_STARTMENU),
    /* Startup menu. */
    DEF_CSIDL(CSIDL_STARTMENU),

/*    DEF_CSIDL(CSIDL_COMMON_APPDATA), */
/*    DEF_CSIDL(CSIDL_LOCAL_APPDATA), */
    /* Repository for application-specific data.
       Needs Internet Explorer 4.0 */
    DEF_CSIDL(CSIDL_APPDATA),

    /* The desktop for all users.
       NT only */
    DEF_CSIDL(CSIDL_COMMON_DESKTOPDIRECTORY),
    /* The desktop. */
    DEF_CSIDL(CSIDL_DESKTOPDIRECTORY),

    /* Startup folder for all users.
       NT only */
    DEF_CSIDL(CSIDL_COMMON_STARTUP),
    /* Startup folder. */
    DEF_CSIDL(CSIDL_STARTUP),

    /* Programs item in the start menu for all users.
       NT only */
    DEF_CSIDL(CSIDL_COMMON_PROGRAMS),
    /* Program item in the user's start menu. */
    DEF_CSIDL(CSIDL_PROGRAMS),

/*    DEF_CSIDL(CSIDL_PROGRAM_FILES_COMMON), */
/*    DEF_CSIDL(CSIDL_PROGRAM_FILES), */

    /* Virtual folder containing fonts. */
    DEF_CSIDL(CSIDL_FONTS),
};

#define DIM(a) (sizeof(a) / sizeof((a)[0]))

static PyObject *FileCreated(PyObject *self, PyObject *args)
{
    char *path;
    if (!g_PyArg_ParseTuple(args, "s", &path))
        return NULL;
    notify(FILE_CREATED, path);
    return g_Py_BuildValue("");
}

static PyObject *DirectoryCreated(PyObject *self, PyObject *args)
{
    char *path;
    if (!g_PyArg_ParseTuple(args, "s", &path))
        return NULL;
    notify(DIR_CREATED, path);
    return g_Py_BuildValue("");
}

static PyObject *GetSpecialFolderPath(PyObject *self, PyObject *args)
{
    char *name;
    char lpszPath[MAX_PATH];
    int i;
    static HRESULT (WINAPI *My_SHGetSpecialFolderPath)(HWND hwnd,
                                                       LPTSTR lpszPath,
                                                       int nFolder,
                                                       BOOL fCreate);

    if (!My_SHGetSpecialFolderPath) {
        HINSTANCE hLib = LoadLibrary("shell32.dll");
        if (!hLib) {
            g_PyErr_Format(g_PyExc_OSError,
                           "function not available");
            return NULL;
        }
        My_SHGetSpecialFolderPath = (BOOL (WINAPI *)(HWND, LPTSTR,
                                                     int, BOOL))
            GetProcAddress(hLib,
                           "SHGetSpecialFolderPathA");
    }

    if (!g_PyArg_ParseTuple(args, "s", &name))
        return NULL;

    if (!My_SHGetSpecialFolderPath) {
        g_PyErr_Format(g_PyExc_OSError, "function not available");
        return NULL;
    }

    for (i = 0; i < DIM(csidl_names); ++i) {
        if (0 == strcmpi(csidl_names[i].name, name)) {
            int nFolder;
            nFolder = csidl_names[i].nFolder;
            if (My_SHGetSpecialFolderPath(NULL, lpszPath,
                                          nFolder, 0))
                return g_Py_BuildValue("s", lpszPath);
            else {
                g_PyErr_Format(g_PyExc_OSError,
                               "no such folder (%s)", name);
                return NULL;
            }

        }
    };
    g_PyErr_Format(g_PyExc_ValueError, "unknown CSIDL (%s)", name);
    return NULL;
}

static PyObject *CreateShortcut(PyObject *self, PyObject *args)
{
    char *path; /* path and filename */
    char *description;
    char *filename;

    char *arguments = NULL;
    char *iconpath = NULL;
    int iconindex = 0;
    char *workdir = NULL;

    WCHAR wszFilename[MAX_PATH];

    IShellLink *ps1 = NULL;
    IPersistFile *pPf = NULL;

    HRESULT hr;

    hr = CoInitialize(NULL);
    if (FAILED(hr)) {
        g_PyErr_Format(g_PyExc_OSError,
                       "CoInitialize failed, error 0x%x", hr);
        goto error;
    }

    if (!g_PyArg_ParseTuple(args, "sss|sssi",
                            &path, &description, &filename,
                            &arguments, &workdir, &iconpath, &iconindex))
        return NULL;

    hr = CoCreateInstance(&CLSID_ShellLink,
                          NULL,
                          CLSCTX_INPROC_SERVER,
                          &IID_IShellLink,
                          &ps1);
    if (FAILED(hr)) {
        g_PyErr_Format(g_PyExc_OSError,
                       "CoCreateInstance failed, error 0x%x", hr);
        goto error;
    }

    hr = ps1->lpVtbl->QueryInterface(ps1, &IID_IPersistFile,
                                     (void **)&pPf);
    if (FAILED(hr)) {
        g_PyErr_Format(g_PyExc_OSError,
                       "QueryInterface(IPersistFile) error 0x%x", hr);
        goto error;
    }


    hr = ps1->lpVtbl->SetPath(ps1, path);
    if (FAILED(hr)) {
        g_PyErr_Format(g_PyExc_OSError,
                       "SetPath() failed, error 0x%x", hr);
        goto error;
    }

    hr = ps1->lpVtbl->SetDescription(ps1, description);
    if (FAILED(hr)) {
        g_PyErr_Format(g_PyExc_OSError,
                       "SetDescription() failed, error 0x%x", hr);
        goto error;
    }

    if (arguments) {
        hr = ps1->lpVtbl->SetArguments(ps1, arguments);
        if (FAILED(hr)) {
            g_PyErr_Format(g_PyExc_OSError,
                           "SetArguments() error 0x%x", hr);
            goto error;
        }
    }

    if (iconpath) {
        hr = ps1->lpVtbl->SetIconLocation(ps1, iconpath, iconindex);
        if (FAILED(hr)) {
            g_PyErr_Format(g_PyExc_OSError,
                           "SetIconLocation() error 0x%x", hr);
            goto error;
        }
    }

    if (workdir) {
        hr = ps1->lpVtbl->SetWorkingDirectory(ps1, workdir);
        if (FAILED(hr)) {
            g_PyErr_Format(g_PyExc_OSError,
                           "SetWorkingDirectory() error 0x%x", hr);
            goto error;
        }
    }

    MultiByteToWideChar(CP_ACP, 0,
                        filename, -1,
                        wszFilename, MAX_PATH);

    hr = pPf->lpVtbl->Save(pPf, wszFilename, TRUE);
    if (FAILED(hr)) {
        g_PyErr_Format(g_PyExc_OSError,
                       "Failed to create shortcut '%s' - error 0x%x", filename, hr);
        goto error;
    }

    pPf->lpVtbl->Release(pPf);
    ps1->lpVtbl->Release(ps1);
    CoUninitialize();
    return g_Py_BuildValue("");

  error:
    if (pPf)
        pPf->lpVtbl->Release(pPf);

    if (ps1)
        ps1->lpVtbl->Release(ps1);

    CoUninitialize();

    return NULL;
}

static PyObject *PyMessageBox(PyObject *self, PyObject *args)
{
    int rc;
    char *text, *caption;
    int flags;
    if (!g_PyArg_ParseTuple(args, "ssi", &text, &caption, &flags))
        return NULL;
    rc = MessageBox(GetFocus(), text, caption, flags);
    return g_Py_BuildValue("i", rc);
}

static PyObject *GetRootHKey(PyObject *self)
{
    return g_PyLong_FromVoidPtr(hkey_root);
}

#define METH_VARARGS 0x0001
#define METH_NOARGS   0x0004
typedef PyObject *(*PyCFunction)(PyObject *, PyObject *);

PyMethodDef meth[] = {
    {"create_shortcut", CreateShortcut, METH_VARARGS, NULL},
    {"get_special_folder_path", GetSpecialFolderPath, METH_VARARGS, NULL},
    {"get_root_hkey", (PyCFunction)GetRootHKey, METH_NOARGS, NULL},
    {"file_created", FileCreated, METH_VARARGS, NULL},
    {"directory_created", DirectoryCreated, METH_VARARGS, NULL},
    {"message_box", PyMessageBox, METH_VARARGS, NULL},
};

static HINSTANCE LoadPythonDll(char *fname)
{
    char fullpath[_MAX_PATH];
    LONG size = sizeof(fullpath);
    char subkey_name[80];
    char buffer[260 + 12];
    HINSTANCE h;

    /* make sure PYTHONHOME is set, to that sys.path is initialized correctly */
    wsprintf(buffer, "PYTHONHOME=%s", python_dir);
    _putenv(buffer);
    h = LoadLibrary(fname);
    if (h)
        return h;
    wsprintf(subkey_name,
             "SOFTWARE\\Python\\PythonCore\\%d.%d\\InstallPath",
             py_major, py_minor);
    if (ERROR_SUCCESS != RegQueryValue(HKEY_CURRENT_USER, subkey_name,
                                       fullpath, &size) &&
        ERROR_SUCCESS != RegQueryValue(HKEY_LOCAL_MACHINE, subkey_name,
                                       fullpath, &size))
        return NULL;
    strcat(fullpath, "\\");
    strcat(fullpath, fname);
    return LoadLibrary(fullpath);
}

static int prepare_script_environment(HINSTANCE hPython)
{
    PyObject *mod;
    DECLPROC(hPython, PyObject *, PyImport_ImportModule, (char *));
    DECLPROC(hPython, int, PyObject_SetAttrString, (PyObject *, char *, PyObject *));
    DECLPROC(hPython, PyObject *, PyObject_GetAttrString, (PyObject *, char *));
    DECLPROC(hPython, PyObject *, PyCFunction_New, (PyMethodDef *, PyObject *));
    DECLPROC(hPython, PyObject *, Py_BuildValue, (char *, ...));
    DECLPROC(hPython, int, PyArg_ParseTuple, (PyObject *, char *, ...));
    DECLPROC(hPython, PyObject *, PyErr_Format, (PyObject *, char *));
    DECLPROC(hPython, PyObject *, PyLong_FromVoidPtr, (void *));
    if (!PyImport_ImportModule || !PyObject_GetAttrString ||
        !PyObject_SetAttrString || !PyCFunction_New)
        return 1;
    if (!Py_BuildValue || !PyArg_ParseTuple || !PyErr_Format)
        return 1;

    mod = PyImport_ImportModule("__builtin__");
    if (mod) {
        int i;
        g_PyExc_ValueError = PyObject_GetAttrString(mod, "ValueError");
        g_PyExc_OSError = PyObject_GetAttrString(mod, "OSError");
        for (i = 0; i < DIM(meth); ++i) {
            PyObject_SetAttrString(mod, meth[i].ml_name,
                                   PyCFunction_New(&meth[i], NULL));
        }
    }
    g_Py_BuildValue = Py_BuildValue;
    g_PyArg_ParseTuple = PyArg_ParseTuple;
    g_PyErr_Format = PyErr_Format;
    g_PyLong_FromVoidPtr = PyLong_FromVoidPtr;

    return 0;
}

/*
 * This function returns one of the following error codes:
 * 1 if the Python-dll does not export the functions we need
 * 2 if no install-script is specified in pathname
 * 3 if the install-script file could not be opened
 * the return value of PyRun_SimpleString() otherwise,
 * which is 0 if everything is ok, -1 if an exception had occurred
 * in the install-script.
 */

static int
do_run_installscript(HINSTANCE hPython, char *pathname, int argc, char **argv)
{
    int fh, result;
    DECLPROC(hPython, void, Py_Initialize, (void));
    DECLPROC(hPython, int, PySys_SetArgv, (int, char **));
    DECLPROC(hPython, int, PyRun_SimpleString, (char *));
    DECLPROC(hPython, void, Py_Finalize, (void));
    DECLPROC(hPython, PyObject *, Py_BuildValue, (char *, ...));
    DECLPROC(hPython, PyObject *, PyCFunction_New,
             (PyMethodDef *, PyObject *));
    DECLPROC(hPython, int, PyArg_ParseTuple, (PyObject *, char *, ...));
    DECLPROC(hPython, PyObject *, PyErr_Format, (PyObject *, char *));

    if (!Py_Initialize || !PySys_SetArgv
        || !PyRun_SimpleString || !Py_Finalize)
        return 1;

    if (!Py_BuildValue || !PyArg_ParseTuple || !PyErr_Format)
        return 1;

    if (!PyCFunction_New || !PyArg_ParseTuple || !PyErr_Format)
        return 1;

    if (pathname == NULL || pathname[0] == '\0')
        return 2;

    fh = open(pathname, _O_RDONLY);
    if (-1 == fh) {
        fprintf(stderr, "Could not open postinstall-script %s\n",
            pathname);
        return 3;
    }

    SetDlgItemText(hDialog, IDC_INFO, "Running Script...");

    Py_Initialize();

    prepare_script_environment(hPython);
    PySys_SetArgv(argc, argv);
    result = 3;
    {
        struct _stat statbuf;
        if(0 == _fstat(fh, &statbuf)) {
            char *script = alloca(statbuf.st_size + 5);
            int n = read(fh, script, statbuf.st_size);
            if (n > 0) {
                script[n] = '\n';
                script[n+1] = 0;
                result = PyRun_SimpleString(script);
            }
        }
    }
    Py_Finalize();

    close(fh);
    return result;
}

static int
run_installscript(char *pathname, int argc, char **argv, char **pOutput)
{
    HINSTANCE hPython;
    int result = 1;
    int out_buf_size;
    HANDLE redirected, old_stderr, old_stdout;
    char *tempname;

    *pOutput = NULL;

    tempname = tempnam(NULL, NULL);
    // We use a static CRT while the Python version we load uses
    // the CRT from one of various possible DLLs.  As a result we
    // need to redirect the standard handles using the API rather
    // than the CRT.
    redirected = CreateFile(
                                    tempname,
                                    GENERIC_WRITE | GENERIC_READ,
                                    FILE_SHARE_READ,
                                    NULL,
                                    CREATE_ALWAYS,
                                    FILE_ATTRIBUTE_NORMAL | FILE_FLAG_WRITE_THROUGH,
                                    NULL);
    old_stdout = GetStdHandle(STD_OUTPUT_HANDLE);
    old_stderr = GetStdHandle(STD_ERROR_HANDLE);
    SetStdHandle(STD_OUTPUT_HANDLE, redirected);
    SetStdHandle(STD_ERROR_HANDLE, redirected);

    hPython = LoadPythonDll(pythondll);
    if (hPython) {
        result = do_run_installscript(hPython, pathname, argc, argv);
        FreeLibrary(hPython);
    } else {
        fprintf(stderr, "*** Could not load Python ***");
    }
    SetStdHandle(STD_OUTPUT_HANDLE, old_stdout);
    SetStdHandle(STD_ERROR_HANDLE, old_stderr);
    out_buf_size = min(GetFileSize(redirected, NULL), 4096);
    *pOutput = malloc(out_buf_size+1);
    if (*pOutput) {
        DWORD nread = 0;
        SetFilePointer(redirected, 0, 0, FILE_BEGIN);
        ReadFile(redirected, *pOutput, out_buf_size, &nread, NULL);
        (*pOutput)[nread] = '\0';
    }
    CloseHandle(redirected);
    DeleteFile(tempname);
    return result;
}

static int do_run_simple_script(HINSTANCE hPython, char *script)
{
    int rc;
    DECLPROC(hPython, void, Py_Initialize, (void));
    DECLPROC(hPython, void, Py_SetProgramName, (char *));
    DECLPROC(hPython, void, Py_Finalize, (void));
    DECLPROC(hPython, int, PyRun_SimpleString, (char *));
    DECLPROC(hPython, void, PyErr_Print, (void));

    if (!Py_Initialize || !Py_SetProgramName || !Py_Finalize ||
        !PyRun_SimpleString || !PyErr_Print)
        return -1;

    Py_SetProgramName(modulename);
    Py_Initialize();
    prepare_script_environment(hPython);
    rc = PyRun_SimpleString(script);
    if (rc)
        PyErr_Print();
    Py_Finalize();
    return rc;
}

static int run_simple_script(char *script)
{
    int rc;
    HINSTANCE hPython;
    char *tempname = tempnam(NULL, NULL);
    // Redirect output using win32 API - see comments above...
    HANDLE redirected = CreateFile(
                                    tempname,
                                    GENERIC_WRITE | GENERIC_READ,
                                    FILE_SHARE_READ,
                                    NULL,
                                    CREATE_ALWAYS,
                                    FILE_ATTRIBUTE_NORMAL | FILE_FLAG_WRITE_THROUGH,
                                    NULL);
    HANDLE old_stdout = GetStdHandle(STD_OUTPUT_HANDLE);
    HANDLE old_stderr = GetStdHandle(STD_ERROR_HANDLE);
    SetStdHandle(STD_OUTPUT_HANDLE, redirected);
    SetStdHandle(STD_ERROR_HANDLE, redirected);

    hPython = LoadPythonDll(pythondll);
    if (!hPython) {
        char reason[128];
        wsprintf(reason, "Can't load Python for pre-install script (%d)", GetLastError());
        set_failure_reason(reason);
        return -1;
    }
    rc = do_run_simple_script(hPython, script);
    FreeLibrary(hPython);
    SetStdHandle(STD_OUTPUT_HANDLE, old_stdout);
    SetStdHandle(STD_ERROR_HANDLE, old_stderr);
    /* We only care about the output when we fail.  If the script works
       OK, then we discard it
    */
    if (rc) {
        int err_buf_size;
        char *err_buf;
        const char *prefix = "Running the pre-installation script failed\r\n";
        int prefix_len = strlen(prefix);
        err_buf_size = GetFileSize(redirected, NULL);
        if (err_buf_size==INVALID_FILE_SIZE) // an error - let's try anyway...
            err_buf_size = 4096;
        err_buf = malloc(prefix_len + err_buf_size + 1);
        if (err_buf) {
            DWORD n = 0;
            strcpy(err_buf, prefix);
            SetFilePointer(redirected, 0, 0, FILE_BEGIN);
            ReadFile(redirected, err_buf+prefix_len, err_buf_size, &n, NULL);
            err_buf[prefix_len+n] = '\0';
            set_failure_reason(err_buf);
            free(err_buf);
        } else {
            set_failure_reason("Out of memory!");
        }
    }
    CloseHandle(redirected);
    DeleteFile(tempname);
    return rc;
}


static BOOL SystemError(int error, char *msg)
{
    char Buffer[1024];
    int n;

    if (error) {
        LPVOID lpMsgBuf;
        FormatMessage(
            FORMAT_MESSAGE_ALLOCATE_BUFFER |
            FORMAT_MESSAGE_FROM_SYSTEM,
            NULL,
            error,
            MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
            (LPSTR)&lpMsgBuf,
            0,
            NULL
            );
        strncpy(Buffer, lpMsgBuf, sizeof(Buffer));
        LocalFree(lpMsgBuf);
    } else
        Buffer[0] = '\0';
    n = lstrlen(Buffer);
    _snprintf(Buffer+n, sizeof(Buffer)-n, msg);
    MessageBox(hwndMain, Buffer, "Runtime Error", MB_OK | MB_ICONSTOP);
    return FALSE;
}

static BOOL notify (int code, char *fmt, ...)
{
    char Buffer[1024];
    va_list marker;
    BOOL result = TRUE;
    int a, b;
    char *cp;

    va_start(marker, fmt);
    _vsnprintf(Buffer, sizeof(Buffer), fmt, marker);

    switch (code) {
/* Questions */
    case CAN_OVERWRITE:
        break;

/* Information notification */
    case DIR_CREATED:
        if (logfile)
            fprintf(logfile, "100 Made Dir: %s\n", fmt);
        break;

    case FILE_CREATED:
        if (logfile)
            fprintf(logfile, "200 File Copy: %s\n", fmt);
        goto add_to_filelist_label;
        break;

    case FILE_OVERWRITTEN:
        if (logfile)
            fprintf(logfile, "200 File Overwrite: %s\n", fmt);
      add_to_filelist_label:
        if ((cp = strrchr(fmt, '.')) && (0 == strcmp (cp, ".py")))
            add_to_filelist(fmt);
        break;

/* Error Messages */
    case ZLIB_ERROR:
        MessageBox(GetFocus(), Buffer, "Error",
                    MB_OK | MB_ICONWARNING);
        break;

    case SYSTEM_ERROR:
        SystemError(GetLastError(), Buffer);
        break;

    case NUM_FILES:
        a = va_arg(marker, int);
        b = va_arg(marker, int);
        SendMessage(hDialog, WM_NUMFILES, 0, MAKELPARAM(0, a));
        SendMessage(hDialog, WM_NEXTFILE, b,(LPARAM)fmt);
    }
    va_end(marker);

    return result;
}

static char *MapExistingFile(char *pathname, DWORD *psize)
{
    HANDLE hFile, hFileMapping;
    DWORD nSizeLow, nSizeHigh;
    char *data;

    hFile = CreateFile(pathname,
                        GENERIC_READ, FILE_SHARE_READ, NULL,
                        OPEN_EXISTING,
                        FILE_ATTRIBUTE_NORMAL, NULL);
    if (hFile == INVALID_HANDLE_VALUE)
        return NULL;
    nSizeLow = GetFileSize(hFile, &nSizeHigh);
    hFileMapping = CreateFileMapping(hFile,
                                      NULL, PAGE_READONLY, 0, 0, NULL);
    CloseHandle(hFile);

    if (hFileMapping == INVALID_HANDLE_VALUE)
        return NULL;

    data = MapViewOfFile(hFileMapping,
                          FILE_MAP_READ, 0, 0, 0);

    CloseHandle(hFileMapping);
    *psize = nSizeLow;
    return data;
}


static void create_bitmap(HWND hwnd)
{
    BITMAPFILEHEADER *bfh;
    BITMAPINFO *bi;
    HDC hdc;

    if (!bitmap_bytes)
        return;

    if (hBitmap)
        return;

    hdc = GetDC(hwnd);

    bfh = (BITMAPFILEHEADER *)bitmap_bytes;
    bi = (BITMAPINFO *)(bitmap_bytes + sizeof(BITMAPFILEHEADER));

    hBitmap = CreateDIBitmap(hdc,
                             &bi->bmiHeader,
                             CBM_INIT,
                             bitmap_bytes + bfh->bfOffBits,
                             bi,
                             DIB_RGB_COLORS);
    ReleaseDC(hwnd, hdc);
}

/* Extract everything we need to begin the installation.  Currently this
   is the INI filename with install data, and the raw pre-install script
*/
static BOOL ExtractInstallData(char *data, DWORD size, int *pexe_size,
                               char **out_ini_file, char **out_preinstall_script)
{
    /* read the end of central directory record */
    struct eof_cdir *pe = (struct eof_cdir *)&data[size - sizeof
                                                   (struct eof_cdir)];

    int arc_start = size - sizeof (struct eof_cdir) - pe->nBytesCDir -
        pe->ofsCDir;

    int ofs = arc_start - sizeof (struct meta_data_hdr);

    /* read meta_data info */
    struct meta_data_hdr *pmd = (struct meta_data_hdr *)&data[ofs];
    char *src, *dst;
    char *ini_file;
    char tempdir[MAX_PATH];

    /* ensure that if we fail, we don't have garbage out pointers */
    *out_ini_file = *out_preinstall_script = NULL;

    if (pe->tag != 0x06054b50) {
        return FALSE;
    }

    if (pmd->tag != 0x1234567B) {
        return SystemError(0,
                   "Invalid cfgdata magic number (see bdist_wininst.py)");
    }
    if (ofs < 0) {
        return FALSE;
    }

    if (pmd->bitmap_size) {
        /* Store pointer to bitmap bytes */
        bitmap_bytes = (char *)pmd - pmd->uncomp_size - pmd->bitmap_size;
    }

    *pexe_size = ofs - pmd->uncomp_size - pmd->bitmap_size;

    src = ((char *)pmd) - pmd->uncomp_size;
    ini_file = malloc(MAX_PATH); /* will be returned, so do not free it */
    if (!ini_file)
        return FALSE;
    if (!GetTempPath(sizeof(tempdir), tempdir)
        || !GetTempFileName(tempdir, "~du", 0, ini_file)) {
        SystemError(GetLastError(),
                     "Could not create temporary file");
        return FALSE;
    }

    dst = map_new_file(CREATE_ALWAYS, ini_file, NULL, pmd->uncomp_size,
                        0, 0, NULL/*notify*/);
    if (!dst)
        return FALSE;
    /* Up to the first \0 is the INI file data. */
    strncpy(dst, src, pmd->uncomp_size);
    src += strlen(dst) + 1;
    /* Up to next \0 is the pre-install script */
    *out_preinstall_script = strdup(src);
    *out_ini_file = ini_file;
    UnmapViewOfFile(dst);
    return TRUE;
}

static void PumpMessages(void)
{
    MSG msg;
    while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
}

LRESULT CALLBACK
WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    HDC hdc;
    HFONT hFont;
    int h;
    PAINTSTRUCT ps;
    switch (msg) {
    case WM_PAINT:
        hdc = BeginPaint(hwnd, &ps);
        h = GetSystemMetrics(SM_CYSCREEN) / 10;
        hFont = CreateFont(h, 0, 0, 0, 700, TRUE,
                            0, 0, 0, 0, 0, 0, 0, "Times Roman");
        hFont = SelectObject(hdc, hFont);
        SetBkMode(hdc, TRANSPARENT);
        TextOut(hdc, 15, 15, title, strlen(title));
        SetTextColor(hdc, RGB(255, 255, 255));
        TextOut(hdc, 10, 10, title, strlen(title));
        DeleteObject(SelectObject(hdc, hFont));
        EndPaint(hwnd, &ps);
        return 0;
    }
    return DefWindowProc(hwnd, msg, wParam, lParam);
}

static HWND CreateBackground(char *title)
{
    WNDCLASS wc;
    HWND hwnd;
    char buffer[4096];

    wc.style = CS_VREDRAW | CS_HREDRAW;
    wc.lpfnWndProc = WindowProc;
    wc.cbWndExtra = 0;
    wc.cbClsExtra = 0;
    wc.hInstance = GetModuleHandle(NULL);
    wc.hIcon = NULL;
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground = CreateSolidBrush(RGB(0, 0, 128));
    wc.lpszMenuName = NULL;
    wc.lpszClassName = "SetupWindowClass";

    if (!RegisterClass(&wc))
        MessageBox(hwndMain,
                    "Could not register window class",
                    "Setup.exe", MB_OK);

    wsprintf(buffer, "Setup %s", title);
    hwnd = CreateWindow("SetupWindowClass",
                         buffer,
                         0,
                         0, 0,
                         GetSystemMetrics(SM_CXFULLSCREEN),
                         GetSystemMetrics(SM_CYFULLSCREEN),
                         NULL,
                         NULL,
                         GetModuleHandle(NULL),
                         NULL);
    ShowWindow(hwnd, SW_SHOWMAXIMIZED);
    UpdateWindow(hwnd);
    return hwnd;
}

/*
 * Center a window on the screen
 */
static void CenterWindow(HWND hwnd)
{
    RECT rc;
    int w, h;

    GetWindowRect(hwnd, &rc);
    w = GetSystemMetrics(SM_CXSCREEN);
    h = GetSystemMetrics(SM_CYSCREEN);
    MoveWindow(hwnd,
               (w - (rc.right-rc.left))/2,
               (h - (rc.bottom-rc.top))/2,
                rc.right-rc.left, rc.bottom-rc.top, FALSE);
}

#include <prsht.h>

BOOL CALLBACK
IntroDlgProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    LPNMHDR lpnm;
    char Buffer[4096];

    switch (msg) {
    case WM_INITDIALOG:
        create_bitmap(hwnd);
        if(hBitmap)
            SendDlgItemMessage(hwnd, IDC_BITMAP, STM_SETIMAGE,
                               IMAGE_BITMAP, (LPARAM)hBitmap);
        CenterWindow(GetParent(hwnd));
        wsprintf(Buffer,
                  "This Wizard will install %s on your computer. "
                  "Click Next to continue "
                  "or Cancel to exit the Setup Wizard.",
                  meta_name);
        SetDlgItemText(hwnd, IDC_TITLE, Buffer);
        SetDlgItemText(hwnd, IDC_INTRO_TEXT, info);
        SetDlgItemText(hwnd, IDC_BUILD_INFO, build_info);
        return FALSE;

    case WM_NOTIFY:
        lpnm = (LPNMHDR) lParam;

        switch (lpnm->code) {
        case PSN_SETACTIVE:
            PropSheet_SetWizButtons(GetParent(hwnd), PSWIZB_NEXT);
            break;

        case PSN_WIZNEXT:
            break;

        case PSN_RESET:
            break;

        default:
            break;
        }
    }
    return FALSE;
}

#ifdef USE_OTHER_PYTHON_VERSIONS
/* These are really private variables used to communicate
 * between StatusRoutine and CheckPythonExe
 */
char bound_image_dll[_MAX_PATH];
int bound_image_major;
int bound_image_minor;

static BOOL __stdcall StatusRoutine(IMAGEHLP_STATUS_REASON reason,
                                    PSTR ImageName,
                                    PSTR DllName,
                                    ULONG Va,
                                    ULONG Parameter)
{
    char fname[_MAX_PATH];
    int int_version;

    switch(reason) {
    case BindOutOfMemory:
    case BindRvaToVaFailed:
    case BindNoRoomInImage:
    case BindImportProcedureFailed:
        break;

    case BindImportProcedure:
    case BindForwarder:
    case BindForwarderNOT:
    case BindImageModified:
    case BindExpandFileHeaders:
    case BindImageComplete:
    case BindSymbolsNotUpdated:
    case BindMismatchedSymbols:
    case BindImportModuleFailed:
        break;

    case BindImportModule:
        if (1 == sscanf(DllName, "python%d", &int_version)) {
            SearchPath(NULL, DllName, NULL, sizeof(fname),
                       fname, NULL);
            strcpy(bound_image_dll, fname);
            bound_image_major = int_version / 10;
            bound_image_minor = int_version % 10;
            OutputDebugString("BOUND ");
            OutputDebugString(fname);
            OutputDebugString("\n");
        }
        break;
    }
    return TRUE;
}

/*
 */
static LPSTR get_sys_prefix(LPSTR exe, LPSTR dll)
{
    void (__cdecl * Py_Initialize)(void);
    void (__cdecl * Py_SetProgramName)(char *);
    void (__cdecl * Py_Finalize)(void);
    void* (__cdecl * PySys_GetObject)(char *);
    void (__cdecl * PySys_SetArgv)(int, char **);
    char* (__cdecl * Py_GetPrefix)(void);
    char* (__cdecl * Py_GetPath)(void);
    HINSTANCE hPython;
    LPSTR prefix = NULL;
    int (__cdecl * PyRun_SimpleString)(char *);

    {
        char Buffer[256];
        wsprintf(Buffer, "PYTHONHOME=%s", exe);
        *strrchr(Buffer, '\\') = '\0';
//      MessageBox(GetFocus(), Buffer, "PYTHONHOME", MB_OK);
                _putenv(Buffer);
                _putenv("PYTHONPATH=");
    }

    hPython = LoadLibrary(dll);
    if (!hPython)
        return NULL;
    Py_Initialize = (void (*)(void))GetProcAddress
        (hPython,"Py_Initialize");

    PySys_SetArgv = (void (*)(int, char **))GetProcAddress
        (hPython,"PySys_SetArgv");

    PyRun_SimpleString = (int (*)(char *))GetProcAddress
        (hPython,"PyRun_SimpleString");

    Py_SetProgramName = (void (*)(char *))GetProcAddress
        (hPython,"Py_SetProgramName");

    PySys_GetObject = (void* (*)(char *))GetProcAddress
        (hPython,"PySys_GetObject");

    Py_GetPrefix = (char * (*)(void))GetProcAddress
        (hPython,"Py_GetPrefix");

    Py_GetPath = (char * (*)(void))GetProcAddress
        (hPython,"Py_GetPath");

    Py_Finalize = (void (*)(void))GetProcAddress(hPython,
                                                  "Py_Finalize");
    Py_SetProgramName(exe);
    Py_Initialize();
    PySys_SetArgv(1, &exe);

    MessageBox(GetFocus(), Py_GetPrefix(), "PREFIX", MB_OK);
    MessageBox(GetFocus(), Py_GetPath(), "PATH", MB_OK);

    Py_Finalize();
    FreeLibrary(hPython);

    return prefix;
}

static BOOL
CheckPythonExe(LPSTR pathname, LPSTR version, int *pmajor, int *pminor)
{
    bound_image_dll[0] = '\0';
    if (!BindImageEx(BIND_NO_BOUND_IMPORTS | BIND_NO_UPDATE | BIND_ALL_IMAGES,
                     pathname,
                     NULL,
                     NULL,
                     StatusRoutine))
        return SystemError(0, "Could not bind image");
    if (bound_image_dll[0] == '\0')
        return SystemError(0, "Does not seem to be a python executable");
    *pmajor = bound_image_major;
    *pminor = bound_image_minor;
    if (version && *version) {
        char core_version[12];
        wsprintf(core_version, "%d.%d", bound_image_major, bound_image_minor);
        if (strcmp(version, core_version))
            return SystemError(0, "Wrong Python version");
    }
    get_sys_prefix(pathname, bound_image_dll);
    return TRUE;
}

/*
 * Browse for other python versions. Insert it into the listbox specified
 * by hwnd. version, if not NULL or empty, is the version required.
 */
static BOOL GetOtherPythonVersion(HWND hwnd, LPSTR version)
{
    char vers_name[_MAX_PATH + 80];
    DWORD itemindex;
    OPENFILENAME of;
    char pathname[_MAX_PATH];
    DWORD result;

    strcpy(pathname, "python.exe");

    memset(&of, 0, sizeof(of));
    of.lStructSize = sizeof(OPENFILENAME);
    of.hwndOwner = GetParent(hwnd);
    of.hInstance = NULL;
    of.lpstrFilter = "python.exe\0python.exe\0";
    of.lpstrCustomFilter = NULL;
    of.nMaxCustFilter = 0;
    of.nFilterIndex = 1;
    of.lpstrFile = pathname;
    of.nMaxFile = sizeof(pathname);
    of.lpstrFileTitle = NULL;
    of.nMaxFileTitle = 0;
    of.lpstrInitialDir = NULL;
    of.lpstrTitle = "Python executable";
    of.Flags = OFN_FILEMUSTEXIST | OFN_PATHMUSTEXIST;
    of.lpstrDefExt = "exe";

    result = GetOpenFileName(&of);
    if (result) {
        int major, minor;
        if (!CheckPythonExe(pathname, version, &major, &minor)) {
            return FALSE;
        }
        *strrchr(pathname, '\\') = '\0';
        wsprintf(vers_name, "Python Version %d.%d in %s",
                  major, minor, pathname);
        itemindex = SendMessage(hwnd, LB_INSERTSTRING, -1,
                                (LPARAM)(LPSTR)vers_name);
        SendMessage(hwnd, LB_SETCURSEL, itemindex, 0);
        SendMessage(hwnd, LB_SETITEMDATA, itemindex,
                    (LPARAM)(LPSTR)strdup(pathname));
        return TRUE;
    }
    return FALSE;
}
#endif /* USE_OTHER_PYTHON_VERSIONS */

typedef struct _InstalledVersionInfo {
    char prefix[MAX_PATH+1]; // sys.prefix directory.
    HKEY hkey; // Is this Python in HKCU or HKLM?
} InstalledVersionInfo;


/*
 * Fill the listbox specified by hwnd with all python versions found
 * in the registry. version, if not NULL or empty, is the version
 * required.
 */
static BOOL GetPythonVersions(HWND hwnd, HKEY hkRoot, LPSTR version)
{
    DWORD index = 0;
    char core_version[80];
    HKEY hKey;
    BOOL result = TRUE;
    DWORD bufsize;

    if (ERROR_SUCCESS != RegOpenKeyEx(hkRoot,
                                       "Software\\Python\\PythonCore",
                                       0,       KEY_READ, &hKey))
        return FALSE;
    bufsize = sizeof(core_version);
    while (ERROR_SUCCESS == RegEnumKeyEx(hKey, index,
                                          core_version, &bufsize, NULL,
                                          NULL, NULL, NULL)) {
        char subkey_name[80], vers_name[80];
        int itemindex;
        DWORD value_size;
        HKEY hk;

        bufsize = sizeof(core_version);
        ++index;
        if (version && *version && strcmp(version, core_version))
            continue;

        wsprintf(vers_name, "Python Version %s (found in registry)",
                  core_version);
        wsprintf(subkey_name,
                  "Software\\Python\\PythonCore\\%s\\InstallPath",
                  core_version);
        if (ERROR_SUCCESS == RegOpenKeyEx(hkRoot, subkey_name, 0, KEY_READ, &hk)) {
            InstalledVersionInfo *ivi =
                  (InstalledVersionInfo *)malloc(sizeof(InstalledVersionInfo));
            value_size = sizeof(ivi->prefix);
            if (ivi &&
                ERROR_SUCCESS == RegQueryValueEx(hk, NULL, NULL, NULL,
                                                 ivi->prefix, &value_size)) {
                itemindex = SendMessage(hwnd, LB_ADDSTRING, 0,
                                        (LPARAM)(LPSTR)vers_name);
                ivi->hkey = hkRoot;
                SendMessage(hwnd, LB_SETITEMDATA, itemindex,
                            (LPARAM)(LPSTR)ivi);
            }
            RegCloseKey(hk);
        }
    }
    RegCloseKey(hKey);
    return result;
}

/* Determine if the current user can write to HKEY_LOCAL_MACHINE */
BOOL HasLocalMachinePrivs()
{
                HKEY hKey;
                DWORD result;
                static char KeyName[] =
                        "Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall";

                result = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
                                          KeyName,
                                          0,
                                          KEY_CREATE_SUB_KEY,
                                          &hKey);
                if (result==0)
                        RegCloseKey(hKey);
                return result==0;
}

// Check the root registry key to use - either HKLM or HKCU.
// If Python is installed in HKCU, then our extension also must be installed
// in HKCU - as Python won't be available for other users, we shouldn't either
// (and will fail if we are!)
// If Python is installed in HKLM, then we will also prefer to use HKLM, but
// this may not be possible - so we silently fall back to HKCU.
//
// We assume hkey_root is already set to where Python itself is installed.
void CheckRootKey(HWND hwnd)
{
    if (hkey_root==HKEY_CURRENT_USER) {
        ; // as above, always install ourself in HKCU too.
    } else if (hkey_root==HKEY_LOCAL_MACHINE) {
        // Python in HKLM, but we may or may not have permissions there.
        // Open the uninstall key with 'create' permissions - if this fails,
        // we don't have permission.
        if (!HasLocalMachinePrivs())
            hkey_root = HKEY_CURRENT_USER;
    } else {
        MessageBox(hwnd, "Don't know Python's installation type",
                           "Strange", MB_OK | MB_ICONSTOP);
        /* Default to wherever they can, but preferring HKLM */
        hkey_root = HasLocalMachinePrivs() ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
    }
}

/* Return the installation scheme depending on Python version number */
SCHEME *GetScheme(int major, int minor)
{
    if (major > 2)
        return new_scheme;
    else if((major == 2) && (minor >= 2))
        return new_scheme;
    return old_scheme;
}

BOOL CALLBACK
SelectPythonDlgProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    LPNMHDR lpnm;

    switch (msg) {
    case WM_INITDIALOG:
        if (hBitmap)
            SendDlgItemMessage(hwnd, IDC_BITMAP, STM_SETIMAGE,
                               IMAGE_BITMAP, (LPARAM)hBitmap);
        GetPythonVersions(GetDlgItem(hwnd, IDC_VERSIONS_LIST),
                           HKEY_LOCAL_MACHINE, target_version);
        GetPythonVersions(GetDlgItem(hwnd, IDC_VERSIONS_LIST),
                           HKEY_CURRENT_USER, target_version);
        {               /* select the last entry which is the highest python
                   version found */
            int count;
            count = SendDlgItemMessage(hwnd, IDC_VERSIONS_LIST,
                                        LB_GETCOUNT, 0, 0);
            if (count && count != LB_ERR)
                SendDlgItemMessage(hwnd, IDC_VERSIONS_LIST, LB_SETCURSEL,
                                    count-1, 0);

            /* If a specific Python version is required,
             * display a prominent notice showing this fact.
             */
            if (target_version && target_version[0]) {
                char buffer[4096];
                wsprintf(buffer,
                         "Python %s is required for this package. "
                         "Select installation to use:",
                         target_version);
                SetDlgItemText(hwnd, IDC_TITLE, buffer);
            }

            if (count == 0) {
                char Buffer[4096];
                char *msg;
                if (target_version && target_version[0]) {
                    wsprintf(Buffer,
                             "Python version %s required, which was not found"
                             " in the registry.", target_version);
                    msg = Buffer;
                } else
                    msg = "No Python installation found in the registry.";
                MessageBox(hwnd, msg, "Cannot install",
                           MB_OK | MB_ICONSTOP);
            }
        }
        goto UpdateInstallDir;
        break;

    case WM_COMMAND:
        switch (LOWORD(wParam)) {
/*
  case IDC_OTHERPYTHON:
  if (GetOtherPythonVersion(GetDlgItem(hwnd, IDC_VERSIONS_LIST),
  target_version))
  goto UpdateInstallDir;
  break;
*/
        case IDC_VERSIONS_LIST:
            switch (HIWORD(wParam)) {
                int id;
            case LBN_SELCHANGE:
              UpdateInstallDir:
                PropSheet_SetWizButtons(GetParent(hwnd),
                                        PSWIZB_BACK | PSWIZB_NEXT);
                id = SendDlgItemMessage(hwnd, IDC_VERSIONS_LIST,
                                         LB_GETCURSEL, 0, 0);
                if (id == LB_ERR) {
                    PropSheet_SetWizButtons(GetParent(hwnd),
                                            PSWIZB_BACK);
                    SetDlgItemText(hwnd, IDC_PATH, "");
                    SetDlgItemText(hwnd, IDC_INSTALL_PATH, "");
                    strcpy(python_dir, "");
                    strcpy(pythondll, "");
                } else {
                    char *pbuf;
                    int result;
                    InstalledVersionInfo *ivi;
                    PropSheet_SetWizButtons(GetParent(hwnd),
                                            PSWIZB_BACK | PSWIZB_NEXT);
                    /* Get the python directory */
            ivi = (InstalledVersionInfo *)
                        SendDlgItemMessage(hwnd,
                                                                IDC_VERSIONS_LIST,
                                                                LB_GETITEMDATA,
                                                                id,
                                                                0);
            hkey_root = ivi->hkey;
                                strcpy(python_dir, ivi->prefix);
                                SetDlgItemText(hwnd, IDC_PATH, python_dir);
                                /* retrieve the python version and pythondll to use */
                    result = SendDlgItemMessage(hwnd, IDC_VERSIONS_LIST,
                                                 LB_GETTEXTLEN, (WPARAM)id, 0);
                    pbuf = (char *)malloc(result + 1);
                    if (pbuf) {
                        /* guess the name of the python-dll */
                        SendDlgItemMessage(hwnd, IDC_VERSIONS_LIST,
                                            LB_GETTEXT, (WPARAM)id,
                                            (LPARAM)pbuf);
                        result = sscanf(pbuf, "Python Version %d.%d",
                                         &py_major, &py_minor);
                        if (result == 2) {
#ifdef _DEBUG
                            wsprintf(pythondll, "python%d%d_d.dll",
                                     py_major, py_minor);
#else
                            wsprintf(pythondll, "python%d%d.dll",
                                     py_major, py_minor);
#endif
                        }
                        free(pbuf);
                    } else
                        strcpy(pythondll, "");
                    /* retrieve the scheme for this version */
                    {
                        char install_path[_MAX_PATH];
                        SCHEME *scheme = GetScheme(py_major, py_minor);
                        strcpy(install_path, python_dir);
                        if (install_path[strlen(install_path)-1] != '\\')
                            strcat(install_path, "\\");
                        strcat(install_path, scheme[0].prefix);
                        SetDlgItemText(hwnd, IDC_INSTALL_PATH, install_path);
                    }
                }
            }
            break;
        }
        return 0;

    case WM_NOTIFY:
        lpnm = (LPNMHDR) lParam;

        switch (lpnm->code) {
            int id;
        case PSN_SETACTIVE:
            id = SendDlgItemMessage(hwnd, IDC_VERSIONS_LIST,
                                     LB_GETCURSEL, 0, 0);
            if (id == LB_ERR)
                PropSheet_SetWizButtons(GetParent(hwnd),
                                        PSWIZB_BACK);
            else
                PropSheet_SetWizButtons(GetParent(hwnd),
                                        PSWIZB_BACK | PSWIZB_NEXT);
            break;

        case PSN_WIZNEXT:
            break;

        case PSN_WIZFINISH:
            break;

        case PSN_RESET:
            break;

        default:
            break;
        }
    }
    return 0;
}

static BOOL OpenLogfile(char *dir)
{
    char buffer[_MAX_PATH+1];
    time_t ltime;
    struct tm *now;
    long result;
    HKEY hKey, hSubkey;
    char subkey_name[256];
    static char KeyName[] =
        "Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall";
    const char *root_name = (hkey_root==HKEY_LOCAL_MACHINE ?
                            "HKEY_LOCAL_MACHINE" : "HKEY_CURRENT_USER");
    DWORD disposition;

    /* Use Create, as the Uninstall subkey may not exist under HKCU.
       Use CreateKeyEx, so we can specify a SAM specifying write access
    */
        result = RegCreateKeyEx(hkey_root,
                      KeyName,
                      0, /* reserved */
                  NULL, /* class */
                  0, /* options */
                  KEY_CREATE_SUB_KEY, /* sam */
                  NULL, /* security */
                  &hKey, /* result key */
                  NULL); /* disposition */
    if (result != ERROR_SUCCESS) {
        if (result == ERROR_ACCESS_DENIED) {
            /* This should no longer be able to happen - we have already
               checked if they have permissions in HKLM, and all users
               should have write access to HKCU.
            */
            MessageBox(GetFocus(),
                       "You do not seem to have sufficient access rights\n"
                       "on this machine to install this software",
                       NULL,
                       MB_OK | MB_ICONSTOP);
            return FALSE;
        } else {
            MessageBox(GetFocus(), KeyName, "Could not open key", MB_OK);
        }
    }

    sprintf(buffer, "%s\\%s-wininst.log", dir, meta_name);
    logfile = fopen(buffer, "a");
    time(&ltime);
    now = localtime(&ltime);
    strftime(buffer, sizeof(buffer),
             "*** Installation started %Y/%m/%d %H:%M ***\n",
             localtime(&ltime));
    fprintf(logfile, buffer);
    fprintf(logfile, "Source: %s\n", modulename);

    /* Root key must be first entry processed by uninstaller. */
    fprintf(logfile, "999 Root Key: %s\n", root_name);

    sprintf(subkey_name, "%s-py%d.%d", meta_name, py_major, py_minor);

    result = RegCreateKeyEx(hKey, subkey_name,
                            0, NULL, 0,
                            KEY_WRITE,
                            NULL,
                            &hSubkey,
                            &disposition);

    if (result != ERROR_SUCCESS)
        MessageBox(GetFocus(), subkey_name, "Could not create key", MB_OK);

    RegCloseKey(hKey);

    if (disposition == REG_CREATED_NEW_KEY)
        fprintf(logfile, "020 Reg DB Key: [%s]%s\n", KeyName, subkey_name);

    sprintf(buffer, "Python %d.%d %s", py_major, py_minor, title);

    result = RegSetValueEx(hSubkey, "DisplayName",
                           0,
                           REG_SZ,
                           buffer,
                           strlen(buffer)+1);

    if (result != ERROR_SUCCESS)
        MessageBox(GetFocus(), buffer, "Could not set key value", MB_OK);

    fprintf(logfile, "040 Reg DB Value: [%s\\%s]%s=%s\n",
        KeyName, subkey_name, "DisplayName", buffer);

    {
        FILE *fp;
        sprintf(buffer, "%s\\Remove%s.exe", dir, meta_name);
        fp = fopen(buffer, "wb");
        fwrite(arc_data, exe_size, 1, fp);
        fclose(fp);

        sprintf(buffer, "\"%s\\Remove%s.exe\" -u \"%s\\%s-wininst.log\"",
            dir, meta_name, dir, meta_name);

        result = RegSetValueEx(hSubkey, "UninstallString",
                               0,
                               REG_SZ,
                               buffer,
                               strlen(buffer)+1);

        if (result != ERROR_SUCCESS)
            MessageBox(GetFocus(), buffer, "Could not set key value", MB_OK);

        fprintf(logfile, "040 Reg DB Value: [%s\\%s]%s=%s\n",
            KeyName, subkey_name, "UninstallString", buffer);
    }
    return TRUE;
}

static void CloseLogfile(void)
{
    char buffer[_MAX_PATH+1];
    time_t ltime;
    struct tm *now;

    time(&ltime);
    now = localtime(&ltime);
    strftime(buffer, sizeof(buffer),
             "*** Installation finished %Y/%m/%d %H:%M ***\n",
             localtime(&ltime));
    fprintf(logfile, buffer);
    if (logfile)
        fclose(logfile);
}

BOOL CALLBACK
InstallFilesDlgProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    LPNMHDR lpnm;
    char Buffer[4096];
    SCHEME *scheme;

    switch (msg) {
    case WM_INITDIALOG:
        if (hBitmap)
            SendDlgItemMessage(hwnd, IDC_BITMAP, STM_SETIMAGE,
                               IMAGE_BITMAP, (LPARAM)hBitmap);
        wsprintf(Buffer,
                  "Click Next to begin the installation of %s. "
                  "If you want to review or change any of your "
                  " installation settings, click Back. "
                  "Click Cancel to exit the wizard.",
                  meta_name);
        SetDlgItemText(hwnd, IDC_TITLE, Buffer);
        SetDlgItemText(hwnd, IDC_INFO, "Ready to install");
        break;

    case WM_NUMFILES:
        SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETRANGE, 0, lParam);
        PumpMessages();
        return TRUE;

    case WM_NEXTFILE:
        SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS, wParam,
                            0);
        SetDlgItemText(hwnd, IDC_INFO, (LPSTR)lParam);
        PumpMessages();
        return TRUE;

    case WM_NOTIFY:
        lpnm = (LPNMHDR) lParam;

        switch (lpnm->code) {
        case PSN_SETACTIVE:
            PropSheet_SetWizButtons(GetParent(hwnd),
                                    PSWIZB_BACK | PSWIZB_NEXT);
            break;

        case PSN_WIZFINISH:
            break;

        case PSN_WIZNEXT:
            /* Handle a Next button click here */
            hDialog = hwnd;
            success = TRUE;

            /* Disable the buttons while we work.  Sending CANCELTOCLOSE has
              the effect of disabling the cancel button, which is a) as we
              do everything synchronously we can't cancel, and b) the next
              step is 'finished', when it is too late to cancel anyway.
              The next step being 'Finished' means we also don't need to
              restore the button state back */
            PropSheet_SetWizButtons(GetParent(hwnd), 0);
            SendMessage(GetParent(hwnd), PSM_CANCELTOCLOSE, 0, 0);
            /* Make sure the installation directory name ends in a */
            /* backslash */
            if (python_dir[strlen(python_dir)-1] != '\\')
                strcat(python_dir, "\\");
            /* Strip the trailing backslash again */
            python_dir[strlen(python_dir)-1] = '\0';

            CheckRootKey(hwnd);

            if (!OpenLogfile(python_dir))
                break;

/*
 * The scheme we have to use depends on the Python version...
 if sys.version < "2.2":
 WINDOWS_SCHEME = {
 'purelib': '$base',
 'platlib': '$base',
 'headers': '$base/Include/$dist_name',
 'scripts': '$base/Scripts',
 'data'   : '$base',
 }
 else:
 WINDOWS_SCHEME = {
 'purelib': '$base/Lib/site-packages',
 'platlib': '$base/Lib/site-packages',
 'headers': '$base/Include/$dist_name',
 'scripts': '$base/Scripts',
 'data'   : '$base',
 }
*/
            scheme = GetScheme(py_major, py_minor);
            /* Run the pre-install script. */
            if (pre_install_script && *pre_install_script) {
                SetDlgItemText (hwnd, IDC_TITLE,
                                "Running pre-installation script");
                run_simple_script(pre_install_script);
            }
            if (!success) {
                break;
            }
            /* Extract all files from the archive */
            SetDlgItemText(hwnd, IDC_TITLE, "Installing files...");
            if (!unzip_archive (scheme,
                                python_dir, arc_data,
                                arc_size, notify))
                set_failure_reason("Failed to unzip installation files");
            /* Compile the py-files */
            if (success && pyc_compile) {
                int errors;
                HINSTANCE hPython;
                SetDlgItemText(hwnd, IDC_TITLE,
                                "Compiling files to .pyc...");

                SetDlgItemText(hDialog, IDC_INFO, "Loading python...");
                hPython = LoadPythonDll(pythondll);
                if (hPython) {
                    errors = compile_filelist(hPython, FALSE);
                    FreeLibrary(hPython);
                }
                /* Compilation errors are intentionally ignored:
                 * Python2.0 contains a bug which will result
                 * in sys.path containing garbage under certain
                 * circumstances, and an error message will only
                 * confuse the user.
                 */
            }
            if (success && pyo_compile) {
                int errors;
                HINSTANCE hPython;
                SetDlgItemText(hwnd, IDC_TITLE,
                                "Compiling files to .pyo...");

                SetDlgItemText(hDialog, IDC_INFO, "Loading python...");
                hPython = LoadPythonDll(pythondll);
                if (hPython) {
                    errors = compile_filelist(hPython, TRUE);
                    FreeLibrary(hPython);
                }
                /* Errors ignored: see above */
            }


            break;

        case PSN_RESET:
            break;

        default:
            break;
        }
    }
    return 0;
}


BOOL CALLBACK
FinishedDlgProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    LPNMHDR lpnm;

    switch (msg) {
    case WM_INITDIALOG:
        if (hBitmap)
            SendDlgItemMessage(hwnd, IDC_BITMAP, STM_SETIMAGE,
                               IMAGE_BITMAP, (LPARAM)hBitmap);
        if (!success)
            SetDlgItemText(hwnd, IDC_INFO, get_failure_reason());

        /* async delay: will show the dialog box completely before
           the install_script is started */
        PostMessage(hwnd, WM_USER, 0, 0L);
        return TRUE;

    case WM_USER:

        if (success && install_script && install_script[0]) {
            char fname[MAX_PATH];
            char *buffer;
            HCURSOR hCursor;
            int result;

            char *argv[3] = {NULL, "-install", NULL};

            SetDlgItemText(hwnd, IDC_TITLE,
                            "Please wait while running postinstall script...");
            strcpy(fname, python_dir);
            strcat(fname, "\\Scripts\\");
            strcat(fname, install_script);

            if (logfile)
                fprintf(logfile, "300 Run Script: [%s]%s\n", pythondll, fname);

            hCursor = SetCursor(LoadCursor(NULL, IDC_WAIT));

            argv[0] = fname;

            result = run_installscript(fname, 2, argv, &buffer);
            if (0 != result) {
                fprintf(stderr, "*** run_installscript: internal error 0x%X ***\n", result);
            }
            if (buffer)
                SetDlgItemText(hwnd, IDC_INFO, buffer);
            SetDlgItemText(hwnd, IDC_TITLE,
                            "Postinstall script finished.\n"
                            "Click the Finish button to exit the Setup wizard.");

            free(buffer);
            SetCursor(hCursor);
            CloseLogfile();
        }

        return TRUE;

    case WM_NOTIFY:
        lpnm = (LPNMHDR) lParam;

        switch (lpnm->code) {
        case PSN_SETACTIVE: /* Enable the Finish button */
            PropSheet_SetWizButtons(GetParent(hwnd), PSWIZB_FINISH);
            break;

        case PSN_WIZNEXT:
            break;

        case PSN_WIZFINISH:
            break;

        case PSN_RESET:
            break;

        default:
            break;
        }
    }
    return 0;
}

void RunWizard(HWND hwnd)
{
    PROPSHEETPAGE   psp =       {0};
    HPROPSHEETPAGE  ahpsp[4] =  {0};
    PROPSHEETHEADER psh =       {0};

    /* Display module information */
    psp.dwSize =        sizeof(psp);
    psp.dwFlags =       PSP_DEFAULT|PSP_HIDEHEADER;
    psp.hInstance =     GetModuleHandle (NULL);
    psp.lParam =        0;
    psp.pfnDlgProc =    IntroDlgProc;
    psp.pszTemplate =   MAKEINTRESOURCE(IDD_INTRO);

    ahpsp[0] =          CreatePropertySheetPage(&psp);

    /* Select python version to use */
    psp.dwFlags =       PSP_DEFAULT|PSP_HIDEHEADER;
    psp.pszTemplate =       MAKEINTRESOURCE(IDD_SELECTPYTHON);
    psp.pfnDlgProc =        SelectPythonDlgProc;

    ahpsp[1] =              CreatePropertySheetPage(&psp);

    /* Install the files */
    psp.dwFlags =           PSP_DEFAULT|PSP_HIDEHEADER;
    psp.pszTemplate =       MAKEINTRESOURCE(IDD_INSTALLFILES);
    psp.pfnDlgProc =        InstallFilesDlgProc;

    ahpsp[2] =              CreatePropertySheetPage(&psp);

    /* Show success or failure */
    psp.dwFlags =           PSP_DEFAULT|PSP_HIDEHEADER;
    psp.pszTemplate =       MAKEINTRESOURCE(IDD_FINISHED);
    psp.pfnDlgProc =        FinishedDlgProc;

    ahpsp[3] =              CreatePropertySheetPage(&psp);

    /* Create the property sheet */
    psh.dwSize =            sizeof(psh);
    psh.hInstance =         GetModuleHandle(NULL);
    psh.hwndParent =        hwnd;
    psh.phpage =            ahpsp;
    psh.dwFlags =           PSH_WIZARD/*97*//*|PSH_WATERMARK|PSH_HEADER*/;
        psh.pszbmWatermark =    NULL;
        psh.pszbmHeader =       NULL;
        psh.nStartPage =        0;
        psh.nPages =            4;

        PropertySheet(&psh);
}

// subtly different from HasLocalMachinePrivs(), in that after executing
// an 'elevated' process, we expect this to return TRUE - but there is no
// such implication for HasLocalMachinePrivs
BOOL MyIsUserAnAdmin()
{
    typedef BOOL (WINAPI *PFNIsUserAnAdmin)();
    static PFNIsUserAnAdmin pfnIsUserAnAdmin = NULL;
    HMODULE shell32;
    // This function isn't guaranteed to be available (and it can't hurt
    // to leave the library loaded)
    if (0 == (shell32=LoadLibrary("shell32.dll")))
        return FALSE;
    if (0 == (pfnIsUserAnAdmin=(PFNIsUserAnAdmin)GetProcAddress(shell32, "IsUserAnAdmin")))
        return FALSE;
    return (*pfnIsUserAnAdmin)();
}

// Some magic for Vista's UAC.  If there is a target_version, and
// if that target version is installed in the registry under
// HKLM, and we are not current administrator, then
// re-execute ourselves requesting elevation.
// Split into 2 functions - "should we elevate" and "spawn elevated"

// Returns TRUE if we should spawn an elevated child
BOOL NeedAutoUAC()
{
    HKEY hk;
    char key_name[80];
    // no Python version info == we can't know yet.
    if (target_version[0] == '\0')
        return FALSE;
    // see how python is current installed
    wsprintf(key_name,
                     "Software\\Python\\PythonCore\\%s\\InstallPath",
                     target_version);
    if (ERROR_SUCCESS != RegOpenKeyEx(HKEY_LOCAL_MACHINE,
                                      key_name, 0, KEY_READ, &hk))
        return FALSE;
    RegCloseKey(hk);
    // Python is installed in HKLM - we must elevate.
    return TRUE;
}

// Returns TRUE if the platform supports UAC.
BOOL PlatformSupportsUAC()
{
    // Note that win2k does seem to support ShellExecute with 'runas',
    // but does *not* support IsUserAnAdmin - so we just pretend things
    // only work on XP and later.
    BOOL bIsWindowsXPorLater;
    OSVERSIONINFO winverinfo;
    winverinfo.dwOSVersionInfoSize = sizeof(winverinfo);
    if (!GetVersionEx(&winverinfo))
        return FALSE; // something bad has gone wrong
    bIsWindowsXPorLater =
       ( (winverinfo.dwMajorVersion > 5) ||
       ( (winverinfo.dwMajorVersion == 5) && (winverinfo.dwMinorVersion >= 1) ));
    return bIsWindowsXPorLater;
}

// Spawn ourself as an elevated application.  On failure, a message is
// displayed to the user - but this app will always terminate, even
// on error.
void SpawnUAC()
{
    // interesting failure scenario that has been seen: initial executable
    // runs from a network drive - but once elevated, that network share
    // isn't seen, and ShellExecute fails with SE_ERR_ACCESSDENIED.
    int ret = (int)ShellExecute(0, "runas", modulename, "", NULL,
                                SW_SHOWNORMAL);
    if (ret <= 32) {
        char msg[128];
        wsprintf(msg, "Failed to start elevated process (ShellExecute returned %d)", ret);
        MessageBox(0, msg, "Setup", MB_OK | MB_ICONERROR);
    }
}

int DoInstall(void)
{
    char ini_buffer[4096];

    /* Read installation information */
    GetPrivateProfileString("Setup", "title", "", ini_buffer,
                             sizeof(ini_buffer), ini_file);
    unescape(title, ini_buffer, sizeof(title));

    GetPrivateProfileString("Setup", "info", "", ini_buffer,
                             sizeof(ini_buffer), ini_file);
    unescape(info, ini_buffer, sizeof(info));

    GetPrivateProfileString("Setup", "build_info", "", build_info,
                             sizeof(build_info), ini_file);

    pyc_compile = GetPrivateProfileInt("Setup", "target_compile", 1,
                                        ini_file);
    pyo_compile = GetPrivateProfileInt("Setup", "target_optimize", 1,
                                        ini_file);

    GetPrivateProfileString("Setup", "target_version", "",
                             target_version, sizeof(target_version),
                             ini_file);

    GetPrivateProfileString("metadata", "name", "",
                             meta_name, sizeof(meta_name),
                             ini_file);

    GetPrivateProfileString("Setup", "install_script", "",
                             install_script, sizeof(install_script),
                             ini_file);

    GetPrivateProfileString("Setup", "user_access_control", "",
                             user_access_control, sizeof(user_access_control), ini_file);

    // See if we need to do the Vista UAC magic.
    if (strcmp(user_access_control, "force")==0) {
        if (PlatformSupportsUAC() && !MyIsUserAnAdmin()) {
            SpawnUAC();
            return 0;
        }
        // already admin - keep going
    } else if (strcmp(user_access_control, "auto")==0) {
        // Check if it looks like we need UAC control, based
        // on how Python itself was installed.
        if (PlatformSupportsUAC() && !MyIsUserAnAdmin() && NeedAutoUAC()) {
            SpawnUAC();
            return 0;
        }
    } else {
        // display a warning about unknown values - only the developer
        // of the extension will see it (until they fix it!)
        if (user_access_control[0] && strcmp(user_access_control, "none") != 0) {
            MessageBox(GetFocus(), "Bad user_access_control value", "oops", MB_OK);
        // nothing to do.
        }
    }

    hwndMain = CreateBackground(title);

    RunWizard(hwndMain);

    /* Clean up */
    UnmapViewOfFile(arc_data);
    if (ini_file)
        DeleteFile(ini_file);

    if (hBitmap)
        DeleteObject(hBitmap);

    return 0;
}

/*********************** uninstall section ******************************/

static int compare(const void *p1, const void *p2)
{
    return strcmp(*(char **)p2, *(char **)p1);
}

/*
 * Commit suicide (remove the uninstaller itself).
 *
 * Create a batch file to first remove the uninstaller
 * (will succeed after it has finished), then the batch file itself.
 *
 * This technique has been demonstrated by Jeff Richter,
 * MSJ 1/1996
 */
void remove_exe(void)
{
    char exename[_MAX_PATH];
    char batname[_MAX_PATH];
    FILE *fp;
    STARTUPINFO si;
    PROCESS_INFORMATION pi;

    GetModuleFileName(NULL, exename, sizeof(exename));
    sprintf(batname, "%s.bat", exename);
    fp = fopen(batname, "w");
    fprintf(fp, ":Repeat\n");
    fprintf(fp, "del \"%s\"\n", exename);
    fprintf(fp, "if exist \"%s\" goto Repeat\n", exename);
    fprintf(fp, "del \"%s\"\n", batname);
    fclose(fp);

    ZeroMemory(&si, sizeof(si));
    si.cb = sizeof(si);
    si.dwFlags = STARTF_USESHOWWINDOW;
    si.wShowWindow = SW_HIDE;
    if (CreateProcess(NULL,
                      batname,
                      NULL,
                      NULL,
                      FALSE,
                      CREATE_SUSPENDED | IDLE_PRIORITY_CLASS,
                      NULL,
                      "\\",
                      &si,
                      &pi)) {
        SetThreadPriority(pi.hThread, THREAD_PRIORITY_IDLE);
        SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL);
        SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS);
        CloseHandle(pi.hProcess);
        ResumeThread(pi.hThread);
        CloseHandle(pi.hThread);
    }
}

void DeleteRegistryKey(char *string)
{
    char *keyname;
    char *subkeyname;
    char *delim;
    HKEY hKey;
    long result;
    char *line;

    line = strdup(string); /* so we can change it */

    keyname = strchr(line, '[');
    if (!keyname)
        return;
    ++keyname;

    subkeyname = strchr(keyname, ']');
    if (!subkeyname)
        return;
    *subkeyname++='\0';
    delim = strchr(subkeyname, '\n');
    if (delim)
        *delim = '\0';

    result = RegOpenKeyEx(hkey_root,
                          keyname,
                          0,
                          KEY_WRITE,
                          &hKey);

    if (result != ERROR_SUCCESS)
        MessageBox(GetFocus(), string, "Could not open key", MB_OK);
    else {
        result = RegDeleteKey(hKey, subkeyname);
        if (result != ERROR_SUCCESS && result != ERROR_FILE_NOT_FOUND)
            MessageBox(GetFocus(), string, "Could not delete key", MB_OK);
        RegCloseKey(hKey);
    }
    free(line);
}

void DeleteRegistryValue(char *string)
{
    char *keyname;
    char *valuename;
    char *value;
    HKEY hKey;
    long result;
    char *line;

    line = strdup(string); /* so we can change it */

/* Format is 'Reg DB Value: [key]name=value' */
    keyname = strchr(line, '[');
    if (!keyname)
        return;
    ++keyname;
    valuename = strchr(keyname, ']');
    if (!valuename)
        return;
    *valuename++ = '\0';
    value = strchr(valuename, '=');
    if (!value)
        return;

    *value++ = '\0';

    result = RegOpenKeyEx(hkey_root,
                          keyname,
                          0,
                          KEY_WRITE,
                          &hKey);
    if (result != ERROR_SUCCESS)
        MessageBox(GetFocus(), string, "Could not open key", MB_OK);
    else {
        result = RegDeleteValue(hKey, valuename);
        if (result != ERROR_SUCCESS && result != ERROR_FILE_NOT_FOUND)
            MessageBox(GetFocus(), string, "Could not delete value", MB_OK);
        RegCloseKey(hKey);
    }
    free(line);
}

BOOL MyDeleteFile(char *line)
{
    char *pathname = strchr(line, ':');
    if (!pathname)
        return FALSE;
    ++pathname;
    while (isspace(*pathname))
        ++pathname;
    return DeleteFile(pathname);
}

BOOL MyRemoveDirectory(char *line)
{
    char *pathname = strchr(line, ':');
    if (!pathname)
        return FALSE;
    ++pathname;
    while (isspace(*pathname))
        ++pathname;
    return RemoveDirectory(pathname);
}

BOOL Run_RemoveScript(char *line)
{
    char *dllname;
    char *scriptname;
    static char lastscript[MAX_PATH];

/* Format is 'Run Scripts: [pythondll]scriptname' */
/* XXX Currently, pythondll carries no path!!! */
    dllname = strchr(line, '[');
    if (!dllname)
        return FALSE;
    ++dllname;
    scriptname = strchr(dllname, ']');
    if (!scriptname)
        return FALSE;
    *scriptname++ = '\0';
    /* this function may be called more than one time with the same
       script, only run it one time */
    if (strcmp(lastscript, scriptname)) {
        char *argv[3] = {NULL, "-remove", NULL};
        char *buffer = NULL;

        argv[0] = scriptname;

        if (0 != run_installscript(scriptname, 2, argv, &buffer))
            fprintf(stderr, "*** Could not run installation script ***");

        if (buffer && buffer[0])
            MessageBox(GetFocus(), buffer, "uninstall-script", MB_OK);
        free(buffer);

        strcpy(lastscript, scriptname);
    }
    return TRUE;
}

int DoUninstall(int argc, char **argv)
{
    FILE *logfile;
    char buffer[4096];
    int nLines = 0;
    int i;
    char *cp;
    int nFiles = 0;
    int nDirs = 0;
    int nErrors = 0;
    char **lines;
    int lines_buffer_size = 10;

    if (argc != 3) {
        MessageBox(NULL,
                   "Wrong number of args",
                   NULL,
                   MB_OK);
        return 1; /* Error */
    }
    if (strcmp(argv[1], "-u")) {
        MessageBox(NULL,
                   "2. arg is not -u",
                   NULL,
                   MB_OK);
        return 1; /* Error */
    }

    logfile = fopen(argv[2], "r");
    if (!logfile) {
        MessageBox(NULL,
                   "could not open logfile",
                   NULL,
                   MB_OK);
        return 1; /* Error */
    }

    lines = (char **)malloc(sizeof(char *) * lines_buffer_size);
    if (!lines)
        return SystemError(0, "Out of memory");

    /* Read the whole logfile, realloacting the buffer */
    while (fgets(buffer, sizeof(buffer), logfile)) {
        int len = strlen(buffer);
        /* remove trailing white space */
        while (isspace(buffer[len-1]))
            len -= 1;
        buffer[len] = '\0';
        lines[nLines++] = strdup(buffer);
        if (nLines >= lines_buffer_size) {
            lines_buffer_size += 10;
            lines = (char **)realloc(lines,
                                     sizeof(char *) * lines_buffer_size);
            if (!lines)
                return SystemError(0, "Out of memory");
        }
    }
    fclose(logfile);

    /* Sort all the lines, so that highest 3-digit codes are first */
    qsort(&lines[0], nLines, sizeof(char *),
          compare);

    if (IDYES != MessageBox(NULL,
                            "Are you sure you want to remove\n"
                            "this package from your computer?",
                            "Please confirm",
                            MB_YESNO | MB_ICONQUESTION))
        return 0;

    hkey_root = HKEY_LOCAL_MACHINE;
    cp = "";
    for (i = 0; i < nLines; ++i) {
        /* Ignore duplicate lines */
        if (strcmp(cp, lines[i])) {
            int ign;
            cp = lines[i];
            /* Parse the lines */
            if (2 == sscanf(cp, "%d Root Key: %s", &ign, &buffer)) {
                if (strcmp(buffer, "HKEY_CURRENT_USER")==0)
                    hkey_root = HKEY_CURRENT_USER;
                else {
                    // HKLM - check they have permissions.
                    if (!HasLocalMachinePrivs()) {
                        MessageBox(GetFocus(),
                                   "You do not seem to have sufficient access rights\n"
                                   "on this machine to uninstall this software",
                                   NULL,
                                   MB_OK | MB_ICONSTOP);
                        return 1; /* Error */
                    }
                }
            } else if (2 == sscanf(cp, "%d Made Dir: %s", &ign, &buffer)) {
                if (MyRemoveDirectory(cp))
                    ++nDirs;
                else {
                    int code = GetLastError();
                    if (code != 2 && code != 3) { /* file or path not found */
                        ++nErrors;
                    }
                }
            } else if (2 == sscanf(cp, "%d File Copy: %s", &ign, &buffer)) {
                if (MyDeleteFile(cp))
                    ++nFiles;
                else {
                    int code = GetLastError();
                    if (code != 2 && code != 3) { /* file or path not found */
                        ++nErrors;
                    }
                }
            } else if (2 == sscanf(cp, "%d File Overwrite: %s", &ign, &buffer)) {
                if (MyDeleteFile(cp))
                    ++nFiles;
                else {
                    int code = GetLastError();
                    if (code != 2 && code != 3) { /* file or path not found */
                        ++nErrors;
                    }
                }
            } else if (2 == sscanf(cp, "%d Reg DB Key: %s", &ign, &buffer)) {
                DeleteRegistryKey(cp);
            } else if (2 == sscanf(cp, "%d Reg DB Value: %s", &ign, &buffer)) {
                DeleteRegistryValue(cp);
            } else if (2 == sscanf(cp, "%d Run Script: %s", &ign, &buffer)) {
                Run_RemoveScript(cp);
            }
        }
    }

    if (DeleteFile(argv[2])) {
        ++nFiles;
    } else {
        ++nErrors;
        SystemError(GetLastError(), argv[2]);
    }
    if (nErrors)
        wsprintf(buffer,
                 "%d files and %d directories removed\n"
                 "%d files or directories could not be removed",
                 nFiles, nDirs, nErrors);
    else
        wsprintf(buffer, "%d files and %d directories removed",
                 nFiles, nDirs);
    MessageBox(NULL, buffer, "Uninstall Finished!",
               MB_OK | MB_ICONINFORMATION);
    remove_exe();
    return 0;
}

int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst,
                    LPSTR lpszCmdLine, INT nCmdShow)
{
    extern int __argc;
    extern char **__argv;
    char *basename;

    GetModuleFileName(NULL, modulename, sizeof(modulename));

    /* Map the executable file to memory */
    arc_data = MapExistingFile(modulename, &arc_size);
    if (!arc_data) {
        SystemError(GetLastError(), "Could not open archive");
        return 1;
    }

    /* OK. So this program can act as installer (self-extracting
     * zip-file, or as uninstaller when started with '-u logfile'
     * command line flags.
     *
     * The installer is usually started without command line flags,
     * and the uninstaller is usually started with the '-u logfile'
     * flag. What to do if some innocent user double-clicks the
     * exe-file?
     * The following implements a defensive strategy...
     */

    /* Try to extract the configuration data into a temporary file */
    if (ExtractInstallData(arc_data, arc_size, &exe_size,
                           &ini_file, &pre_install_script))
        return DoInstall();

    if (!ini_file && __argc > 1) {
        return DoUninstall(__argc, __argv);
    }


    basename = strrchr(modulename, '\\');
    if (basename)
        ++basename;

    /* Last guess about the purpose of this program */
    if (basename && (0 == strncmp(basename, "Remove", 6)))
        SystemError(0, "This program is normally started by windows");
    else
        SystemError(0, "Setup program invalid or damaged");
    return 1;
}