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
|
#include "cache.h"
#include "commit.h"
#include "pack.h"
#include "tag.h"
#include "blob.h"
#include "http.h"
#include "refs.h"
#include "diff.h"
#include "revision.h"
#include "exec_cmd.h"
#include "remote.h"
#include <expat.h>
static const char http_push_usage[] =
"git-http-push [--all] [--dry-run] [--force] [--verbose] <remote> [<head>...]\n";
#ifndef XML_STATUS_OK
enum XML_Status {
XML_STATUS_OK = 1,
XML_STATUS_ERROR = 0
};
#define XML_STATUS_OK 1
#define XML_STATUS_ERROR 0
#endif
#define PREV_BUF_SIZE 4096
#define RANGE_HEADER_SIZE 30
/* DAV methods */
#define DAV_LOCK "LOCK"
#define DAV_MKCOL "MKCOL"
#define DAV_MOVE "MOVE"
#define DAV_PROPFIND "PROPFIND"
#define DAV_PUT "PUT"
#define DAV_UNLOCK "UNLOCK"
#define DAV_DELETE "DELETE"
/* DAV lock flags */
#define DAV_PROP_LOCKWR (1u << 0)
#define DAV_PROP_LOCKEX (1u << 1)
#define DAV_LOCK_OK (1u << 2)
/* DAV XML properties */
#define DAV_CTX_LOCKENTRY ".multistatus.response.propstat.prop.supportedlock.lockentry"
#define DAV_CTX_LOCKTYPE_WRITE ".multistatus.response.propstat.prop.supportedlock.lockentry.locktype.write"
#define DAV_CTX_LOCKTYPE_EXCLUSIVE ".multistatus.response.propstat.prop.supportedlock.lockentry.lockscope.exclusive"
#define DAV_ACTIVELOCK_OWNER ".prop.lockdiscovery.activelock.owner.href"
#define DAV_ACTIVELOCK_TIMEOUT ".prop.lockdiscovery.activelock.timeout"
#define DAV_ACTIVELOCK_TOKEN ".prop.lockdiscovery.activelock.locktoken.href"
#define DAV_PROPFIND_RESP ".multistatus.response"
#define DAV_PROPFIND_NAME ".multistatus.response.href"
#define DAV_PROPFIND_COLLECTION ".multistatus.response.propstat.prop.resourcetype.collection"
/* DAV request body templates */
#define PROPFIND_SUPPORTEDLOCK_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:prop xmlns:R=\"%s\">\n<D:supportedlock/>\n</D:prop>\n</D:propfind>"
#define PROPFIND_ALL_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:allprop/>\n</D:propfind>"
#define LOCK_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:lockinfo xmlns:D=\"DAV:\">\n<D:lockscope><D:exclusive/></D:lockscope>\n<D:locktype><D:write/></D:locktype>\n<D:owner>\n<D:href>mailto:%s</D:href>\n</D:owner>\n</D:lockinfo>"
#define LOCK_TIME 600
#define LOCK_REFRESH 30
/* bits #0-15 in revision.h */
#define LOCAL (1u<<16)
#define REMOTE (1u<<17)
#define FETCHING (1u<<18)
#define PUSHING (1u<<19)
/* We allow "recursive" symbolic refs. Only within reason, though */
#define MAXDEPTH 5
static int pushing;
static int aborted;
static signed char remote_dir_exists[256];
static struct curl_slist *no_pragma_header;
static struct curl_slist *default_headers;
static int push_verbosely;
static int push_all = MATCH_REFS_NONE;
static int force_all;
static int dry_run;
static struct object_list *objects;
struct repo
{
char *url;
int path_len;
int has_info_refs;
int can_update_info_refs;
int has_info_packs;
struct packed_git *packs;
struct remote_lock *locks;
};
static struct repo *remote;
enum transfer_state {
NEED_FETCH,
RUN_FETCH_LOOSE,
RUN_FETCH_PACKED,
NEED_PUSH,
RUN_MKCOL,
RUN_PUT,
RUN_MOVE,
ABORTED,
COMPLETE,
};
struct transfer_request
{
struct object *obj;
char *url;
char *dest;
struct remote_lock *lock;
struct curl_slist *headers;
struct buffer buffer;
char filename[PATH_MAX];
char tmpfile[PATH_MAX];
int local_fileno;
FILE *local_stream;
enum transfer_state state;
CURLcode curl_result;
char errorstr[CURL_ERROR_SIZE];
long http_code;
unsigned char real_sha1[20];
SHA_CTX c;
z_stream stream;
int zret;
int rename;
void *userData;
struct active_request_slot *slot;
struct transfer_request *next;
};
static struct transfer_request *request_queue_head;
struct xml_ctx
{
char *name;
int len;
char *cdata;
void (*userFunc)(struct xml_ctx *ctx, int tag_closed);
void *userData;
};
struct remote_lock
{
char *url;
char *owner;
char *token;
time_t start_time;
long timeout;
int refreshing;
struct remote_lock *next;
};
/* Flags that control remote_ls processing */
#define PROCESS_FILES (1u << 0)
#define PROCESS_DIRS (1u << 1)
#define RECURSIVE (1u << 2)
/* Flags that remote_ls passes to callback functions */
#define IS_DIR (1u << 0)
struct remote_ls_ctx
{
char *path;
void (*userFunc)(struct remote_ls_ctx *ls);
void *userData;
int flags;
char *dentry_name;
int dentry_flags;
struct remote_ls_ctx *parent;
};
static void finish_request(struct transfer_request *request);
static void release_request(struct transfer_request *request);
static void process_response(void *callback_data)
{
struct transfer_request *request =
(struct transfer_request *)callback_data;
finish_request(request);
}
#ifdef USE_CURL_MULTI
static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
void *data)
{
unsigned char expn[4096];
size_t size = eltsize * nmemb;
int posn = 0;
struct transfer_request *request = (struct transfer_request *)data;
do {
ssize_t retval = xwrite(request->local_fileno,
(char *) ptr + posn, size - posn);
if (retval < 0)
return posn;
posn += retval;
} while (posn < size);
request->stream.avail_in = size;
request->stream.next_in = ptr;
do {
request->stream.next_out = expn;
request->stream.avail_out = sizeof(expn);
request->zret = inflate(&request->stream, Z_SYNC_FLUSH);
SHA1_Update(&request->c, expn,
sizeof(expn) - request->stream.avail_out);
} while (request->stream.avail_in && request->zret == Z_OK);
data_received++;
return size;
}
static void start_fetch_loose(struct transfer_request *request)
{
char *hex = sha1_to_hex(request->obj->sha1);
char *filename;
char prevfile[PATH_MAX];
char *url;
char *posn;
int prevlocal;
unsigned char prev_buf[PREV_BUF_SIZE];
ssize_t prev_read = 0;
long prev_posn = 0;
char range[RANGE_HEADER_SIZE];
struct curl_slist *range_header = NULL;
struct active_request_slot *slot;
filename = sha1_file_name(request->obj->sha1);
snprintf(request->filename, sizeof(request->filename), "%s", filename);
snprintf(request->tmpfile, sizeof(request->tmpfile),
"%s.temp", filename);
snprintf(prevfile, sizeof(prevfile), "%s.prev", request->filename);
unlink(prevfile);
rename(request->tmpfile, prevfile);
unlink(request->tmpfile);
if (request->local_fileno != -1)
error("fd leakage in start: %d", request->local_fileno);
request->local_fileno = open(request->tmpfile,
O_WRONLY | O_CREAT | O_EXCL, 0666);
/* This could have failed due to the "lazy directory creation";
* try to mkdir the last path component.
*/
if (request->local_fileno < 0 && errno == ENOENT) {
char *dir = strrchr(request->tmpfile, '/');
if (dir) {
*dir = 0;
mkdir(request->tmpfile, 0777);
*dir = '/';
}
request->local_fileno = open(request->tmpfile,
O_WRONLY | O_CREAT | O_EXCL, 0666);
}
if (request->local_fileno < 0) {
request->state = ABORTED;
error("Couldn't create temporary file %s for %s: %s",
request->tmpfile, request->filename, strerror(errno));
return;
}
memset(&request->stream, 0, sizeof(request->stream));
inflateInit(&request->stream);
SHA1_Init(&request->c);
url = xmalloc(strlen(remote->url) + 50);
request->url = xmalloc(strlen(remote->url) + 50);
strcpy(url, remote->url);
posn = url + strlen(remote->url);
strcpy(posn, "objects/");
posn += 8;
memcpy(posn, hex, 2);
posn += 2;
*(posn++) = '/';
strcpy(posn, hex + 2);
strcpy(request->url, url);
/* If a previous temp file is present, process what was already
fetched. */
prevlocal = open(prevfile, O_RDONLY);
if (prevlocal != -1) {
do {
prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
if (prev_read>0) {
if (fwrite_sha1_file(prev_buf,
1,
prev_read,
request) == prev_read) {
prev_posn += prev_read;
} else {
prev_read = -1;
}
}
} while (prev_read > 0);
close(prevlocal);
}
unlink(prevfile);
/* Reset inflate/SHA1 if there was an error reading the previous temp
file; also rewind to the beginning of the local file. */
if (prev_read == -1) {
memset(&request->stream, 0, sizeof(request->stream));
inflateInit(&request->stream);
SHA1_Init(&request->c);
if (prev_posn>0) {
prev_posn = 0;
lseek(request->local_fileno, 0, SEEK_SET);
ftruncate(request->local_fileno, 0);
}
}
slot = get_active_slot();
slot->callback_func = process_response;
slot->callback_data = request;
request->slot = slot;
curl_easy_setopt(slot->curl, CURLOPT_FILE, request);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
/* If we have successfully processed data from a previous fetch
attempt, only fetch the data we don't already have. */
if (prev_posn>0) {
if (push_verbosely)
fprintf(stderr,
"Resuming fetch of object %s at byte %ld\n",
hex, prev_posn);
sprintf(range, "Range: bytes=%ld-", prev_posn);
range_header = curl_slist_append(range_header, range);
curl_easy_setopt(slot->curl,
CURLOPT_HTTPHEADER, range_header);
}
/* Try to get the request started, abort the request on error */
request->state = RUN_FETCH_LOOSE;
if (!start_active_slot(slot)) {
fprintf(stderr, "Unable to start GET request\n");
remote->can_update_info_refs = 0;
release_request(request);
}
}
static void start_mkcol(struct transfer_request *request)
{
char *hex = sha1_to_hex(request->obj->sha1);
struct active_request_slot *slot;
char *posn;
request->url = xmalloc(strlen(remote->url) + 13);
strcpy(request->url, remote->url);
posn = request->url + strlen(remote->url);
strcpy(posn, "objects/");
posn += 8;
memcpy(posn, hex, 2);
posn += 2;
strcpy(posn, "/");
slot = get_active_slot();
slot->callback_func = process_response;
slot->callback_data = request;
curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
if (start_active_slot(slot)) {
request->slot = slot;
request->state = RUN_MKCOL;
} else {
request->state = ABORTED;
free(request->url);
request->url = NULL;
}
}
#endif
static void start_fetch_packed(struct transfer_request *request)
{
char *url;
struct packed_git *target;
FILE *packfile;
char *filename;
long prev_posn = 0;
char range[RANGE_HEADER_SIZE];
struct curl_slist *range_header = NULL;
struct transfer_request *check_request = request_queue_head;
struct active_request_slot *slot;
target = find_sha1_pack(request->obj->sha1, remote->packs);
if (!target) {
fprintf(stderr, "Unable to fetch %s, will not be able to update server info refs\n", sha1_to_hex(request->obj->sha1));
remote->can_update_info_refs = 0;
release_request(request);
return;
}
fprintf(stderr, "Fetching pack %s\n", sha1_to_hex(target->sha1));
fprintf(stderr, " which contains %s\n", sha1_to_hex(request->obj->sha1));
filename = sha1_pack_name(target->sha1);
snprintf(request->filename, sizeof(request->filename), "%s", filename);
snprintf(request->tmpfile, sizeof(request->tmpfile),
"%s.temp", filename);
url = xmalloc(strlen(remote->url) + 64);
sprintf(url, "%sobjects/pack/pack-%s.pack",
remote->url, sha1_to_hex(target->sha1));
/* Make sure there isn't another open request for this pack */
while (check_request) {
if (check_request->state == RUN_FETCH_PACKED &&
!strcmp(check_request->url, url)) {
free(url);
release_request(request);
return;
}
check_request = check_request->next;
}
packfile = fopen(request->tmpfile, "a");
if (!packfile) {
fprintf(stderr, "Unable to open local file %s for pack",
filename);
remote->can_update_info_refs = 0;
free(url);
return;
}
slot = get_active_slot();
slot->callback_func = process_response;
slot->callback_data = request;
request->slot = slot;
request->local_stream = packfile;
request->userData = target;
request->url = url;
curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
slot->local = packfile;
/* If there is data present from a previous transfer attempt,
resume where it left off */
prev_posn = ftell(packfile);
if (prev_posn>0) {
if (push_verbosely)
fprintf(stderr,
"Resuming fetch of pack %s at byte %ld\n",
sha1_to_hex(target->sha1), prev_posn);
sprintf(range, "Range: bytes=%ld-", prev_posn);
range_header = curl_slist_append(range_header, range);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
}
/* Try to get the request started, abort the request on error */
request->state = RUN_FETCH_PACKED;
if (!start_active_slot(slot)) {
fprintf(stderr, "Unable to start GET request\n");
remote->can_update_info_refs = 0;
release_request(request);
}
}
static void start_put(struct transfer_request *request)
{
char *hex = sha1_to_hex(request->obj->sha1);
struct active_request_slot *slot;
char *posn;
enum object_type type;
char hdr[50];
void *unpacked;
unsigned long len;
int hdrlen;
ssize_t size;
z_stream stream;
unpacked = read_sha1_file(request->obj->sha1, &type, &len);
hdrlen = sprintf(hdr, "%s %lu", typename(type), len) + 1;
/* Set it up */
memset(&stream, 0, sizeof(stream));
deflateInit(&stream, zlib_compression_level);
size = deflateBound(&stream, len + hdrlen);
request->buffer.buffer = xmalloc(size);
/* Compress it */
stream.next_out = request->buffer.buffer;
stream.avail_out = size;
/* First header.. */
stream.next_in = (void *)hdr;
stream.avail_in = hdrlen;
while (deflate(&stream, 0) == Z_OK)
/* nothing */;
/* Then the data itself.. */
stream.next_in = unpacked;
stream.avail_in = len;
while (deflate(&stream, Z_FINISH) == Z_OK)
/* nothing */;
deflateEnd(&stream);
free(unpacked);
request->buffer.size = stream.total_out;
request->buffer.posn = 0;
request->url = xmalloc(strlen(remote->url) +
strlen(request->lock->token) + 51);
strcpy(request->url, remote->url);
posn = request->url + strlen(remote->url);
strcpy(posn, "objects/");
posn += 8;
memcpy(posn, hex, 2);
posn += 2;
*(posn++) = '/';
strcpy(posn, hex + 2);
request->dest = xmalloc(strlen(request->url) + 14);
sprintf(request->dest, "Destination: %s", request->url);
posn += 38;
*(posn++) = '_';
strcpy(posn, request->lock->token);
slot = get_active_slot();
slot->callback_func = process_response;
slot->callback_data = request;
curl_easy_setopt(slot->curl, CURLOPT_INFILE, &request->buffer);
curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, request->buffer.size);
curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
if (start_active_slot(slot)) {
request->slot = slot;
request->state = RUN_PUT;
} else {
request->state = ABORTED;
free(request->url);
request->url = NULL;
}
}
static void start_move(struct transfer_request *request)
{
struct active_request_slot *slot;
struct curl_slist *dav_headers = NULL;
slot = get_active_slot();
slot->callback_func = process_response;
slot->callback_data = request;
curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MOVE);
dav_headers = curl_slist_append(dav_headers, request->dest);
dav_headers = curl_slist_append(dav_headers, "Overwrite: T");
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
if (start_active_slot(slot)) {
request->slot = slot;
request->state = RUN_MOVE;
} else {
request->state = ABORTED;
free(request->url);
request->url = NULL;
}
}
static int refresh_lock(struct remote_lock *lock)
{
struct active_request_slot *slot;
struct slot_results results;
char *if_header;
char timeout_header[25];
struct curl_slist *dav_headers = NULL;
int rc = 0;
lock->refreshing = 1;
if_header = xmalloc(strlen(lock->token) + 25);
sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
sprintf(timeout_header, "Timeout: Second-%ld", lock->timeout);
dav_headers = curl_slist_append(dav_headers, if_header);
dav_headers = curl_slist_append(dav_headers, timeout_header);
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK) {
fprintf(stderr, "LOCK HTTP error %ld\n",
results.http_code);
} else {
lock->start_time = time(NULL);
rc = 1;
}
}
lock->refreshing = 0;
curl_slist_free_all(dav_headers);
free(if_header);
return rc;
}
static void check_locks(void)
{
struct remote_lock *lock = remote->locks;
time_t current_time = time(NULL);
int time_remaining;
while (lock) {
time_remaining = lock->start_time + lock->timeout -
current_time;
if (!lock->refreshing && time_remaining < LOCK_REFRESH) {
if (!refresh_lock(lock)) {
fprintf(stderr,
"Unable to refresh lock for %s\n",
lock->url);
aborted = 1;
return;
}
}
lock = lock->next;
}
}
static void release_request(struct transfer_request *request)
{
struct transfer_request *entry = request_queue_head;
if (request == request_queue_head) {
request_queue_head = request->next;
} else {
while (entry->next != NULL && entry->next != request)
entry = entry->next;
if (entry->next == request)
entry->next = entry->next->next;
}
if (request->local_fileno != -1)
close(request->local_fileno);
if (request->local_stream)
fclose(request->local_stream);
if (request->url != NULL)
free(request->url);
free(request);
}
static void finish_request(struct transfer_request *request)
{
struct stat st;
struct packed_git *target;
struct packed_git **lst;
request->curl_result = request->slot->curl_result;
request->http_code = request->slot->http_code;
request->slot = NULL;
/* Keep locks active */
check_locks();
if (request->headers != NULL)
curl_slist_free_all(request->headers);
/* URL is reused for MOVE after PUT */
if (request->state != RUN_PUT) {
free(request->url);
request->url = NULL;
}
if (request->state == RUN_MKCOL) {
if (request->curl_result == CURLE_OK ||
request->http_code == 405) {
remote_dir_exists[request->obj->sha1[0]] = 1;
start_put(request);
} else {
fprintf(stderr, "MKCOL %s failed, aborting (%d/%ld)\n",
sha1_to_hex(request->obj->sha1),
request->curl_result, request->http_code);
request->state = ABORTED;
aborted = 1;
}
} else if (request->state == RUN_PUT) {
if (request->curl_result == CURLE_OK) {
start_move(request);
} else {
fprintf(stderr, "PUT %s failed, aborting (%d/%ld)\n",
sha1_to_hex(request->obj->sha1),
request->curl_result, request->http_code);
request->state = ABORTED;
aborted = 1;
}
} else if (request->state == RUN_MOVE) {
if (request->curl_result == CURLE_OK) {
if (push_verbosely)
fprintf(stderr, " sent %s\n",
sha1_to_hex(request->obj->sha1));
request->obj->flags |= REMOTE;
release_request(request);
} else {
fprintf(stderr, "MOVE %s failed, aborting (%d/%ld)\n",
sha1_to_hex(request->obj->sha1),
request->curl_result, request->http_code);
request->state = ABORTED;
aborted = 1;
}
} else if (request->state == RUN_FETCH_LOOSE) {
fchmod(request->local_fileno, 0444);
close(request->local_fileno); request->local_fileno = -1;
if (request->curl_result != CURLE_OK &&
request->http_code != 416) {
if (stat(request->tmpfile, &st) == 0) {
if (st.st_size == 0)
unlink(request->tmpfile);
}
} else {
if (request->http_code == 416)
fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n");
inflateEnd(&request->stream);
SHA1_Final(request->real_sha1, &request->c);
if (request->zret != Z_STREAM_END) {
unlink(request->tmpfile);
} else if (hashcmp(request->obj->sha1, request->real_sha1)) {
unlink(request->tmpfile);
} else {
request->rename =
move_temp_to_file(
request->tmpfile,
request->filename);
if (request->rename == 0) {
request->obj->flags |= (LOCAL | REMOTE);
}
}
}
/* Try fetching packed if necessary */
if (request->obj->flags & LOCAL)
release_request(request);
else
start_fetch_packed(request);
} else if (request->state == RUN_FETCH_PACKED) {
if (request->curl_result != CURLE_OK) {
fprintf(stderr, "Unable to get pack file %s\n%s",
request->url, curl_errorstr);
remote->can_update_info_refs = 0;
} else {
off_t pack_size = ftell(request->local_stream);
fclose(request->local_stream);
request->local_stream = NULL;
if (!move_temp_to_file(request->tmpfile,
request->filename)) {
target = (struct packed_git *)request->userData;
target->pack_size = pack_size;
lst = &remote->packs;
while (*lst != target)
lst = &((*lst)->next);
*lst = (*lst)->next;
if (!verify_pack(target, 0))
install_packed_git(target);
else
remote->can_update_info_refs = 0;
}
}
release_request(request);
}
}
#ifdef USE_CURL_MULTI
static int fill_active_slot(void *unused)
{
struct transfer_request *request = request_queue_head;
if (aborted)
return 0;
for (request = request_queue_head; request; request = request->next) {
if (request->state == NEED_FETCH) {
start_fetch_loose(request);
return 1;
} else if (pushing && request->state == NEED_PUSH) {
if (remote_dir_exists[request->obj->sha1[0]] == 1) {
start_put(request);
} else {
start_mkcol(request);
}
return 1;
}
}
return 0;
}
#endif
static void get_remote_object_list(unsigned char parent);
static void add_fetch_request(struct object *obj)
{
struct transfer_request *request;
check_locks();
/*
* Don't fetch the object if it's known to exist locally
* or is already in the request queue
*/
if (remote_dir_exists[obj->sha1[0]] == -1)
get_remote_object_list(obj->sha1[0]);
if (obj->flags & (LOCAL | FETCHING))
return;
obj->flags |= FETCHING;
request = xmalloc(sizeof(*request));
request->obj = obj;
request->url = NULL;
request->lock = NULL;
request->headers = NULL;
request->local_fileno = -1;
request->local_stream = NULL;
request->state = NEED_FETCH;
request->next = request_queue_head;
request_queue_head = request;
#ifdef USE_CURL_MULTI
fill_active_slots();
step_active_slots();
#endif
}
static int add_send_request(struct object *obj, struct remote_lock *lock)
{
struct transfer_request *request = request_queue_head;
struct packed_git *target;
/* Keep locks active */
check_locks();
/*
* Don't push the object if it's known to exist on the remote
* or is already in the request queue
*/
if (remote_dir_exists[obj->sha1[0]] == -1)
get_remote_object_list(obj->sha1[0]);
if (obj->flags & (REMOTE | PUSHING))
return 0;
target = find_sha1_pack(obj->sha1, remote->packs);
if (target) {
obj->flags |= REMOTE;
return 0;
}
obj->flags |= PUSHING;
request = xmalloc(sizeof(*request));
request->obj = obj;
request->url = NULL;
request->lock = lock;
request->headers = NULL;
request->local_fileno = -1;
request->local_stream = NULL;
request->state = NEED_PUSH;
request->next = request_queue_head;
request_queue_head = request;
#ifdef USE_CURL_MULTI
fill_active_slots();
step_active_slots();
#endif
return 1;
}
static int fetch_index(unsigned char *sha1)
{
char *hex = sha1_to_hex(sha1);
char *filename;
char *url;
char tmpfile[PATH_MAX];
long prev_posn = 0;
char range[RANGE_HEADER_SIZE];
struct curl_slist *range_header = NULL;
FILE *indexfile;
struct active_request_slot *slot;
struct slot_results results;
/* Don't use the index if the pack isn't there */
url = xmalloc(strlen(remote->url) + 64);
sprintf(url, "%sobjects/pack/pack-%s.pack", remote->url, hex);
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK) {
free(url);
return error("Unable to verify pack %s is available",
hex);
}
} else {
return error("Unable to start request");
}
if (has_pack_index(sha1))
return 0;
if (push_verbosely)
fprintf(stderr, "Getting index for pack %s\n", hex);
sprintf(url, "%sobjects/pack/pack-%s.idx", remote->url, hex);
filename = sha1_pack_index_name(sha1);
snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename);
indexfile = fopen(tmpfile, "a");
if (!indexfile)
return error("Unable to open local file %s for pack index",
filename);
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
slot->local = indexfile;
/* If there is data present from a previous transfer attempt,
resume where it left off */
prev_posn = ftell(indexfile);
if (prev_posn>0) {
if (push_verbosely)
fprintf(stderr,
"Resuming fetch of index for pack %s at byte %ld\n",
hex, prev_posn);
sprintf(range, "Range: bytes=%ld-", prev_posn);
range_header = curl_slist_append(range_header, range);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
}
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK) {
free(url);
fclose(indexfile);
return error("Unable to get pack index %s\n%s", url,
curl_errorstr);
}
} else {
free(url);
fclose(indexfile);
return error("Unable to start request");
}
free(url);
fclose(indexfile);
return move_temp_to_file(tmpfile, filename);
}
static int setup_index(unsigned char *sha1)
{
struct packed_git *new_pack;
if (fetch_index(sha1))
return -1;
new_pack = parse_pack_index(sha1);
new_pack->next = remote->packs;
remote->packs = new_pack;
return 0;
}
static int fetch_indices(void)
{
unsigned char sha1[20];
char *url;
struct buffer buffer;
char *data;
int i = 0;
struct active_request_slot *slot;
struct slot_results results;
data = xcalloc(1, 4096);
buffer.size = 4096;
buffer.posn = 0;
buffer.buffer = data;
if (push_verbosely)
fprintf(stderr, "Getting pack list\n");
url = xmalloc(strlen(remote->url) + 20);
sprintf(url, "%sobjects/info/packs", remote->url);
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK) {
free(buffer.buffer);
free(url);
if (results.http_code == 404)
return 0;
else
return error("%s", curl_errorstr);
}
} else {
free(buffer.buffer);
free(url);
return error("Unable to start request");
}
free(url);
data = buffer.buffer;
while (i < buffer.posn) {
switch (data[i]) {
case 'P':
i++;
if (i + 52 < buffer.posn &&
!prefixcmp(data + i, " pack-") &&
!prefixcmp(data + i + 46, ".pack\n")) {
get_sha1_hex(data + i + 6, sha1);
setup_index(sha1);
i += 51;
break;
}
default:
while (data[i] != '\n')
i++;
}
i++;
}
free(buffer.buffer);
return 0;
}
static inline int needs_quote(int ch)
{
if (((ch >= 'A') && (ch <= 'Z'))
|| ((ch >= 'a') && (ch <= 'z'))
|| ((ch >= '0') && (ch <= '9'))
|| (ch == '/')
|| (ch == '-')
|| (ch == '.'))
return 0;
return 1;
}
static inline int hex(int v)
{
if (v < 10) return '0' + v;
else return 'A' + v - 10;
}
static char *quote_ref_url(const char *base, const char *ref)
{
const char *cp;
char *dp, *qref;
int len, baselen, ch;
baselen = strlen(base);
len = baselen + 1;
for (cp = ref; (ch = *cp) != 0; cp++, len++)
if (needs_quote(ch))
len += 2; /* extra two hex plus replacement % */
qref = xmalloc(len);
memcpy(qref, base, baselen);
for (cp = ref, dp = qref + baselen; (ch = *cp) != 0; cp++) {
if (needs_quote(ch)) {
*dp++ = '%';
*dp++ = hex((ch >> 4) & 0xF);
*dp++ = hex(ch & 0xF);
}
else
*dp++ = ch;
}
*dp = 0;
return qref;
}
int fetch_ref(char *ref, unsigned char *sha1)
{
char *url;
char hex[42];
struct buffer buffer;
char *base = remote->url;
struct active_request_slot *slot;
struct slot_results results;
buffer.size = 41;
buffer.posn = 0;
buffer.buffer = hex;
hex[41] = '\0';
url = quote_ref_url(base, ref);
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK)
return error("Couldn't get %s for %s\n%s",
url, ref, curl_errorstr);
} else {
return error("Unable to start request");
}
hex[40] = '\0';
get_sha1_hex(hex, sha1);
return 0;
}
static void one_remote_object(const char *hex)
{
unsigned char sha1[20];
struct object *obj;
if (get_sha1_hex(hex, sha1) != 0)
return;
obj = lookup_object(sha1);
if (!obj)
obj = parse_object(sha1);
/* Ignore remote objects that don't exist locally */
if (!obj)
return;
obj->flags |= REMOTE;
if (!object_list_contains(objects, obj))
object_list_insert(obj, &objects);
}
static void handle_lockprop_ctx(struct xml_ctx *ctx, int tag_closed)
{
int *lock_flags = (int *)ctx->userData;
if (tag_closed) {
if (!strcmp(ctx->name, DAV_CTX_LOCKENTRY)) {
if ((*lock_flags & DAV_PROP_LOCKEX) &&
(*lock_flags & DAV_PROP_LOCKWR)) {
*lock_flags |= DAV_LOCK_OK;
}
*lock_flags &= DAV_LOCK_OK;
} else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_WRITE)) {
*lock_flags |= DAV_PROP_LOCKWR;
} else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_EXCLUSIVE)) {
*lock_flags |= DAV_PROP_LOCKEX;
}
}
}
static void handle_new_lock_ctx(struct xml_ctx *ctx, int tag_closed)
{
struct remote_lock *lock = (struct remote_lock *)ctx->userData;
if (tag_closed && ctx->cdata) {
if (!strcmp(ctx->name, DAV_ACTIVELOCK_OWNER)) {
lock->owner = xmalloc(strlen(ctx->cdata) + 1);
strcpy(lock->owner, ctx->cdata);
} else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TIMEOUT)) {
if (!prefixcmp(ctx->cdata, "Second-"))
lock->timeout =
strtol(ctx->cdata + 7, NULL, 10);
} else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TOKEN)) {
if (!prefixcmp(ctx->cdata, "opaquelocktoken:")) {
lock->token = xmalloc(strlen(ctx->cdata) - 15);
strcpy(lock->token, ctx->cdata + 16);
}
}
}
}
static void one_remote_ref(char *refname);
static void
xml_start_tag(void *userData, const char *name, const char **atts)
{
struct xml_ctx *ctx = (struct xml_ctx *)userData;
const char *c = strchr(name, ':');
int new_len;
if (c == NULL)
c = name;
else
c++;
new_len = strlen(ctx->name) + strlen(c) + 2;
if (new_len > ctx->len) {
ctx->name = xrealloc(ctx->name, new_len);
ctx->len = new_len;
}
strcat(ctx->name, ".");
strcat(ctx->name, c);
free(ctx->cdata);
ctx->cdata = NULL;
ctx->userFunc(ctx, 0);
}
static void
xml_end_tag(void *userData, const char *name)
{
struct xml_ctx *ctx = (struct xml_ctx *)userData;
const char *c = strchr(name, ':');
char *ep;
ctx->userFunc(ctx, 1);
if (c == NULL)
c = name;
else
c++;
ep = ctx->name + strlen(ctx->name) - strlen(c) - 1;
*ep = 0;
}
static void
xml_cdata(void *userData, const XML_Char *s, int len)
{
struct xml_ctx *ctx = (struct xml_ctx *)userData;
free(ctx->cdata);
ctx->cdata = xmemdupz(s, len);
}
static struct remote_lock *lock_remote(const char *path, long timeout)
{
struct active_request_slot *slot;
struct slot_results results;
struct buffer out_buffer;
struct buffer in_buffer;
char *out_data;
char *in_data;
char *url;
char *ep;
char timeout_header[25];
struct remote_lock *lock = NULL;
XML_Parser parser = XML_ParserCreate(NULL);
enum XML_Status result;
struct curl_slist *dav_headers = NULL;
struct xml_ctx ctx;
url = xmalloc(strlen(remote->url) + strlen(path) + 1);
sprintf(url, "%s%s", remote->url, path);
/* Make sure leading directories exist for the remote ref */
ep = strchr(url + strlen(remote->url) + 1, '/');
while (ep) {
*ep = 0;
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK &&
results.http_code != 405) {
fprintf(stderr,
"Unable to create branch path %s\n",
url);
free(url);
return NULL;
}
} else {
fprintf(stderr, "Unable to start MKCOL request\n");
free(url);
return NULL;
}
*ep = '/';
ep = strchr(ep + 1, '/');
}
out_buffer.size = strlen(LOCK_REQUEST) + strlen(git_default_email) - 2;
out_data = xmalloc(out_buffer.size + 1);
snprintf(out_data, out_buffer.size + 1, LOCK_REQUEST, git_default_email);
out_buffer.posn = 0;
out_buffer.buffer = out_data;
in_buffer.size = 4096;
in_data = xmalloc(in_buffer.size);
in_buffer.posn = 0;
in_buffer.buffer = in_data;
sprintf(timeout_header, "Timeout: Second-%ld", timeout);
dav_headers = curl_slist_append(dav_headers, timeout_header);
dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
lock = xcalloc(1, sizeof(*lock));
lock->timeout = -1;
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result == CURLE_OK) {
ctx.name = xcalloc(10, 1);
ctx.len = 0;
ctx.cdata = NULL;
ctx.userFunc = handle_new_lock_ctx;
ctx.userData = lock;
XML_SetUserData(parser, &ctx);
XML_SetElementHandler(parser, xml_start_tag,
xml_end_tag);
XML_SetCharacterDataHandler(parser, xml_cdata);
result = XML_Parse(parser, in_buffer.buffer,
in_buffer.posn, 1);
free(ctx.name);
if (result != XML_STATUS_OK) {
fprintf(stderr, "XML error: %s\n",
XML_ErrorString(
XML_GetErrorCode(parser)));
lock->timeout = -1;
}
}
} else {
fprintf(stderr, "Unable to start LOCK request\n");
}
curl_slist_free_all(dav_headers);
free(out_data);
free(in_data);
if (lock->token == NULL || lock->timeout <= 0) {
if (lock->token != NULL)
free(lock->token);
if (lock->owner != NULL)
free(lock->owner);
free(url);
free(lock);
lock = NULL;
} else {
lock->url = url;
lock->start_time = time(NULL);
lock->next = remote->locks;
remote->locks = lock;
}
return lock;
}
static int unlock_remote(struct remote_lock *lock)
{
struct active_request_slot *slot;
struct slot_results results;
struct remote_lock *prev = remote->locks;
char *lock_token_header;
struct curl_slist *dav_headers = NULL;
int rc = 0;
lock_token_header = xmalloc(strlen(lock->token) + 31);
sprintf(lock_token_header, "Lock-Token: <opaquelocktoken:%s>",
lock->token);
dav_headers = curl_slist_append(dav_headers, lock_token_header);
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_UNLOCK);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result == CURLE_OK)
rc = 1;
else
fprintf(stderr, "UNLOCK HTTP error %ld\n",
results.http_code);
} else {
fprintf(stderr, "Unable to start UNLOCK request\n");
}
curl_slist_free_all(dav_headers);
free(lock_token_header);
if (remote->locks == lock) {
remote->locks = lock->next;
} else {
while (prev && prev->next != lock)
prev = prev->next;
if (prev)
prev->next = prev->next->next;
}
if (lock->owner != NULL)
free(lock->owner);
free(lock->url);
free(lock->token);
free(lock);
return rc;
}
static void remote_ls(const char *path, int flags,
void (*userFunc)(struct remote_ls_ctx *ls),
void *userData);
static void process_ls_object(struct remote_ls_ctx *ls)
{
unsigned int *parent = (unsigned int *)ls->userData;
char *path = ls->dentry_name;
char *obj_hex;
if (!strcmp(ls->path, ls->dentry_name) && (ls->flags & IS_DIR)) {
remote_dir_exists[*parent] = 1;
return;
}
if (strlen(path) != 49)
return;
path += 8;
obj_hex = xmalloc(strlen(path));
/* NB: path is not null-terminated, can not use strlcpy here */
memcpy(obj_hex, path, 2);
strcpy(obj_hex + 2, path + 3);
one_remote_object(obj_hex);
free(obj_hex);
}
static void process_ls_ref(struct remote_ls_ctx *ls)
{
if (!strcmp(ls->path, ls->dentry_name) && (ls->dentry_flags & IS_DIR)) {
fprintf(stderr, " %s\n", ls->dentry_name);
return;
}
if (!(ls->dentry_flags & IS_DIR))
one_remote_ref(ls->dentry_name);
}
static void handle_remote_ls_ctx(struct xml_ctx *ctx, int tag_closed)
{
struct remote_ls_ctx *ls = (struct remote_ls_ctx *)ctx->userData;
if (tag_closed) {
if (!strcmp(ctx->name, DAV_PROPFIND_RESP) && ls->dentry_name) {
if (ls->dentry_flags & IS_DIR) {
if (ls->flags & PROCESS_DIRS) {
ls->userFunc(ls);
}
if (strcmp(ls->dentry_name, ls->path) &&
ls->flags & RECURSIVE) {
remote_ls(ls->dentry_name,
ls->flags,
ls->userFunc,
ls->userData);
}
} else if (ls->flags & PROCESS_FILES) {
ls->userFunc(ls);
}
} else if (!strcmp(ctx->name, DAV_PROPFIND_NAME) && ctx->cdata) {
ls->dentry_name = xmalloc(strlen(ctx->cdata) -
remote->path_len + 1);
strcpy(ls->dentry_name, ctx->cdata + remote->path_len);
} else if (!strcmp(ctx->name, DAV_PROPFIND_COLLECTION)) {
ls->dentry_flags |= IS_DIR;
}
} else if (!strcmp(ctx->name, DAV_PROPFIND_RESP)) {
free(ls->dentry_name);
ls->dentry_name = NULL;
ls->dentry_flags = 0;
}
}
static void remote_ls(const char *path, int flags,
void (*userFunc)(struct remote_ls_ctx *ls),
void *userData)
{
char *url = xmalloc(strlen(remote->url) + strlen(path) + 1);
struct active_request_slot *slot;
struct slot_results results;
struct buffer in_buffer;
struct buffer out_buffer;
char *in_data;
char *out_data;
XML_Parser parser = XML_ParserCreate(NULL);
enum XML_Status result;
struct curl_slist *dav_headers = NULL;
struct xml_ctx ctx;
struct remote_ls_ctx ls;
ls.flags = flags;
ls.path = xstrdup(path);
ls.dentry_name = NULL;
ls.dentry_flags = 0;
ls.userData = userData;
ls.userFunc = userFunc;
sprintf(url, "%s%s", remote->url, path);
out_buffer.size = strlen(PROPFIND_ALL_REQUEST);
out_data = xmalloc(out_buffer.size + 1);
snprintf(out_data, out_buffer.size + 1, PROPFIND_ALL_REQUEST);
out_buffer.posn = 0;
out_buffer.buffer = out_data;
in_buffer.size = 4096;
in_data = xmalloc(in_buffer.size);
in_buffer.posn = 0;
in_buffer.buffer = in_data;
dav_headers = curl_slist_append(dav_headers, "Depth: 1");
dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result == CURLE_OK) {
ctx.name = xcalloc(10, 1);
ctx.len = 0;
ctx.cdata = NULL;
ctx.userFunc = handle_remote_ls_ctx;
ctx.userData = &ls;
XML_SetUserData(parser, &ctx);
XML_SetElementHandler(parser, xml_start_tag,
xml_end_tag);
XML_SetCharacterDataHandler(parser, xml_cdata);
result = XML_Parse(parser, in_buffer.buffer,
in_buffer.posn, 1);
free(ctx.name);
if (result != XML_STATUS_OK) {
fprintf(stderr, "XML error: %s\n",
XML_ErrorString(
XML_GetErrorCode(parser)));
}
}
} else {
fprintf(stderr, "Unable to start PROPFIND request\n");
}
free(ls.path);
free(url);
free(out_data);
free(in_buffer.buffer);
curl_slist_free_all(dav_headers);
}
static void get_remote_object_list(unsigned char parent)
{
char path[] = "objects/XX/";
static const char hex[] = "0123456789abcdef";
unsigned int val = parent;
path[8] = hex[val >> 4];
path[9] = hex[val & 0xf];
remote_dir_exists[val] = 0;
remote_ls(path, (PROCESS_FILES | PROCESS_DIRS),
process_ls_object, &val);
}
static int locking_available(void)
{
struct active_request_slot *slot;
struct slot_results results;
struct buffer in_buffer;
struct buffer out_buffer;
char *in_data;
char *out_data;
XML_Parser parser = XML_ParserCreate(NULL);
enum XML_Status result;
struct curl_slist *dav_headers = NULL;
struct xml_ctx ctx;
int lock_flags = 0;
out_buffer.size =
strlen(PROPFIND_SUPPORTEDLOCK_REQUEST) +
strlen(remote->url) - 2;
out_data = xmalloc(out_buffer.size + 1);
snprintf(out_data, out_buffer.size + 1,
PROPFIND_SUPPORTEDLOCK_REQUEST, remote->url);
out_buffer.posn = 0;
out_buffer.buffer = out_data;
in_buffer.size = 4096;
in_data = xmalloc(in_buffer.size);
in_buffer.posn = 0;
in_buffer.buffer = in_data;
dav_headers = curl_slist_append(dav_headers, "Depth: 0");
dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
curl_easy_setopt(slot->curl, CURLOPT_URL, remote->url);
curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result == CURLE_OK) {
ctx.name = xcalloc(10, 1);
ctx.len = 0;
ctx.cdata = NULL;
ctx.userFunc = handle_lockprop_ctx;
ctx.userData = &lock_flags;
XML_SetUserData(parser, &ctx);
XML_SetElementHandler(parser, xml_start_tag,
xml_end_tag);
result = XML_Parse(parser, in_buffer.buffer,
in_buffer.posn, 1);
free(ctx.name);
if (result != XML_STATUS_OK) {
fprintf(stderr, "XML error: %s\n",
XML_ErrorString(
XML_GetErrorCode(parser)));
lock_flags = 0;
}
}
} else {
fprintf(stderr, "Unable to start PROPFIND request\n");
}
free(out_data);
free(in_buffer.buffer);
curl_slist_free_all(dav_headers);
return lock_flags;
}
static struct object_list **add_one_object(struct object *obj, struct object_list **p)
{
struct object_list *entry = xmalloc(sizeof(struct object_list));
entry->item = obj;
entry->next = *p;
*p = entry;
return &entry->next;
}
static struct object_list **process_blob(struct blob *blob,
struct object_list **p,
struct name_path *path,
const char *name)
{
struct object *obj = &blob->object;
obj->flags |= LOCAL;
if (obj->flags & (UNINTERESTING | SEEN))
return p;
obj->flags |= SEEN;
return add_one_object(obj, p);
}
static struct object_list **process_tree(struct tree *tree,
struct object_list **p,
struct name_path *path,
const char *name)
{
struct object *obj = &tree->object;
struct tree_desc desc;
struct name_entry entry;
struct name_path me;
obj->flags |= LOCAL;
if (obj->flags & (UNINTERESTING | SEEN))
return p;
if (parse_tree(tree) < 0)
die("bad tree object %s", sha1_to_hex(obj->sha1));
obj->flags |= SEEN;
name = xstrdup(name);
p = add_one_object(obj, p);
me.up = path;
me.elem = name;
me.elem_len = strlen(name);
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
if (S_ISDIR(entry.mode))
p = process_tree(lookup_tree(entry.sha1), p, &me, name);
else
p = process_blob(lookup_blob(entry.sha1), p, &me, name);
}
free(tree->buffer);
tree->buffer = NULL;
return p;
}
static int get_delta(struct rev_info *revs, struct remote_lock *lock)
{
int i;
struct commit *commit;
struct object_list **p = &objects;
int count = 0;
while ((commit = get_revision(revs)) != NULL) {
p = process_tree(commit->tree, p, NULL, "");
commit->object.flags |= LOCAL;
if (!(commit->object.flags & UNINTERESTING))
count += add_send_request(&commit->object, lock);
}
for (i = 0; i < revs->pending.nr; i++) {
struct object_array_entry *entry = revs->pending.objects + i;
struct object *obj = entry->item;
const char *name = entry->name;
if (obj->flags & (UNINTERESTING | SEEN))
continue;
if (obj->type == OBJ_TAG) {
obj->flags |= SEEN;
p = add_one_object(obj, p);
continue;
}
if (obj->type == OBJ_TREE) {
p = process_tree((struct tree *)obj, p, NULL, name);
continue;
}
if (obj->type == OBJ_BLOB) {
p = process_blob((struct blob *)obj, p, NULL, name);
continue;
}
die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
}
while (objects) {
if (!(objects->item->flags & UNINTERESTING))
count += add_send_request(objects->item, lock);
objects = objects->next;
}
return count;
}
static int update_remote(unsigned char *sha1, struct remote_lock *lock)
{
struct active_request_slot *slot;
struct slot_results results;
char *out_data;
char *if_header;
struct buffer out_buffer;
struct curl_slist *dav_headers = NULL;
int i;
if_header = xmalloc(strlen(lock->token) + 25);
sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
dav_headers = curl_slist_append(dav_headers, if_header);
out_buffer.size = 41;
out_data = xmalloc(out_buffer.size + 1);
i = snprintf(out_data, out_buffer.size + 1, "%s\n", sha1_to_hex(sha1));
if (i != out_buffer.size) {
fprintf(stderr, "Unable to initialize PUT request body\n");
return 0;
}
out_buffer.posn = 0;
out_buffer.buffer = out_data;
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
if (start_active_slot(slot)) {
run_active_slot(slot);
free(out_data);
free(if_header);
if (results.curl_result != CURLE_OK) {
fprintf(stderr,
"PUT error: curl result=%d, HTTP code=%ld\n",
results.curl_result, results.http_code);
/* We should attempt recovery? */
return 0;
}
} else {
free(out_data);
free(if_header);
fprintf(stderr, "Unable to start PUT request\n");
return 0;
}
return 1;
}
static struct ref *local_refs, **local_tail;
static struct ref *remote_refs, **remote_tail;
static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
{
struct ref *ref;
int len = strlen(refname) + 1;
ref = xcalloc(1, sizeof(*ref) + len);
hashcpy(ref->new_sha1, sha1);
memcpy(ref->name, refname, len);
*local_tail = ref;
local_tail = &ref->next;
return 0;
}
static void one_remote_ref(char *refname)
{
struct ref *ref;
unsigned char remote_sha1[20];
struct object *obj;
int len = strlen(refname) + 1;
if (fetch_ref(refname, remote_sha1) != 0) {
fprintf(stderr,
"Unable to fetch ref %s from %s\n",
refname, remote->url);
return;
}
/*
* Fetch a copy of the object if it doesn't exist locally - it
* may be required for updating server info later.
*/
if (remote->can_update_info_refs && !has_sha1_file(remote_sha1)) {
obj = lookup_unknown_object(remote_sha1);
if (obj) {
fprintf(stderr, " fetch %s for %s\n",
sha1_to_hex(remote_sha1), refname);
add_fetch_request(obj);
}
}
ref = xcalloc(1, sizeof(*ref) + len);
hashcpy(ref->old_sha1, remote_sha1);
memcpy(ref->name, refname, len);
*remote_tail = ref;
remote_tail = &ref->next;
}
static void get_local_heads(void)
{
local_tail = &local_refs;
for_each_ref(one_local_ref, NULL);
}
static void get_dav_remote_heads(void)
{
remote_tail = &remote_refs;
remote_ls("refs/", (PROCESS_FILES | PROCESS_DIRS | RECURSIVE), process_ls_ref, NULL);
}
static int is_zero_sha1(const unsigned char *sha1)
{
int i;
for (i = 0; i < 20; i++) {
if (*sha1++)
return 0;
}
return 1;
}
static void unmark_and_free(struct commit_list *list, unsigned int mark)
{
while (list) {
struct commit_list *temp = list;
temp->item->object.flags &= ~mark;
list = temp->next;
free(temp);
}
}
static int ref_newer(const unsigned char *new_sha1,
const unsigned char *old_sha1)
{
struct object *o;
struct commit *old, *new;
struct commit_list *list, *used;
int found = 0;
/* Both new and old must be commit-ish and new is descendant of
* old. Otherwise we require --force.
*/
o = deref_tag(parse_object(old_sha1), NULL, 0);
if (!o || o->type != OBJ_COMMIT)
return 0;
old = (struct commit *) o;
o = deref_tag(parse_object(new_sha1), NULL, 0);
if (!o || o->type != OBJ_COMMIT)
return 0;
new = (struct commit *) o;
if (parse_commit(new) < 0)
return 0;
used = list = NULL;
commit_list_insert(new, &list);
while (list) {
new = pop_most_recent_commit(&list, TMP_MARK);
commit_list_insert(new, &used);
if (new == old) {
found = 1;
break;
}
}
unmark_and_free(list, TMP_MARK);
unmark_and_free(used, TMP_MARK);
return found;
}
static void mark_edge_parents_uninteresting(struct commit *commit)
{
struct commit_list *parents;
for (parents = commit->parents; parents; parents = parents->next) {
struct commit *parent = parents->item;
if (!(parent->object.flags & UNINTERESTING))
continue;
mark_tree_uninteresting(parent->tree);
}
}
static void mark_edges_uninteresting(struct commit_list *list)
{
for ( ; list; list = list->next) {
struct commit *commit = list->item;
if (commit->object.flags & UNINTERESTING) {
mark_tree_uninteresting(commit->tree);
continue;
}
mark_edge_parents_uninteresting(commit);
}
}
static void add_remote_info_ref(struct remote_ls_ctx *ls)
{
struct buffer *buf = (struct buffer *)ls->userData;
unsigned char remote_sha1[20];
struct object *o;
int len;
char *ref_info;
if (fetch_ref(ls->dentry_name, remote_sha1) != 0) {
fprintf(stderr,
"Unable to fetch ref %s from %s\n",
ls->dentry_name, remote->url);
aborted = 1;
return;
}
o = parse_object(remote_sha1);
if (!o) {
fprintf(stderr,
"Unable to parse object %s for remote ref %s\n",
sha1_to_hex(remote_sha1), ls->dentry_name);
aborted = 1;
return;
}
len = strlen(ls->dentry_name) + 42;
ref_info = xcalloc(len + 1, 1);
sprintf(ref_info, "%s %s\n",
sha1_to_hex(remote_sha1), ls->dentry_name);
fwrite_buffer(ref_info, 1, len, buf);
free(ref_info);
if (o->type == OBJ_TAG) {
o = deref_tag(o, ls->dentry_name, 0);
if (o) {
len = strlen(ls->dentry_name) + 45;
ref_info = xcalloc(len + 1, 1);
sprintf(ref_info, "%s %s^{}\n",
sha1_to_hex(o->sha1), ls->dentry_name);
fwrite_buffer(ref_info, 1, len, buf);
free(ref_info);
}
}
}
static void update_remote_info_refs(struct remote_lock *lock)
{
struct buffer buffer;
struct active_request_slot *slot;
struct slot_results results;
char *if_header;
struct curl_slist *dav_headers = NULL;
buffer.buffer = xcalloc(1, 4096);
buffer.size = 4096;
buffer.posn = 0;
remote_ls("refs/", (PROCESS_FILES | RECURSIVE),
add_remote_info_ref, &buffer);
if (!aborted) {
if_header = xmalloc(strlen(lock->token) + 25);
sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
dav_headers = curl_slist_append(dav_headers, if_header);
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_INFILE, &buffer);
curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, buffer.posn);
curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
buffer.posn = 0;
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK) {
fprintf(stderr,
"PUT error: curl result=%d, HTTP code=%ld\n",
results.curl_result, results.http_code);
}
}
free(if_header);
}
free(buffer.buffer);
}
static int remote_exists(const char *path)
{
char *url = xmalloc(strlen(remote->url) + strlen(path) + 1);
struct active_request_slot *slot;
struct slot_results results;
sprintf(url, "%s%s", remote->url, path);
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.http_code == 404)
return 0;
else if (results.curl_result == CURLE_OK)
return 1;
else
fprintf(stderr, "HEAD HTTP error %ld\n", results.http_code);
} else {
fprintf(stderr, "Unable to start HEAD request\n");
}
return -1;
}
static void fetch_symref(const char *path, char **symref, unsigned char *sha1)
{
char *url;
struct buffer buffer;
struct active_request_slot *slot;
struct slot_results results;
url = xmalloc(strlen(remote->url) + strlen(path) + 1);
sprintf(url, "%s%s", remote->url, path);
buffer.size = 4096;
buffer.posn = 0;
buffer.buffer = xmalloc(buffer.size);
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK) {
die("Couldn't get %s for remote symref\n%s",
url, curl_errorstr);
}
} else {
die("Unable to start remote symref request");
}
free(url);
if (*symref != NULL)
free(*symref);
*symref = NULL;
hashclr(sha1);
if (buffer.posn == 0)
return;
/* If it's a symref, set the refname; otherwise try for a sha1 */
if (!prefixcmp((char *)buffer.buffer, "ref: ")) {
*symref = xmemdupz((char *)buffer.buffer + 5, buffer.posn - 6);
} else {
get_sha1_hex(buffer.buffer, sha1);
}
free(buffer.buffer);
}
static int verify_merge_base(unsigned char *head_sha1, unsigned char *branch_sha1)
{
struct commit *head = lookup_commit(head_sha1);
struct commit *branch = lookup_commit(branch_sha1);
struct commit_list *merge_bases = get_merge_bases(head, branch, 1);
return (merge_bases && !merge_bases->next && merge_bases->item == branch);
}
static int delete_remote_branch(char *pattern, int force)
{
struct ref *refs = remote_refs;
struct ref *remote_ref = NULL;
unsigned char head_sha1[20];
char *symref = NULL;
int match;
int patlen = strlen(pattern);
int i;
struct active_request_slot *slot;
struct slot_results results;
char *url;
/* Find the remote branch(es) matching the specified branch name */
for (match = 0; refs; refs = refs->next) {
char *name = refs->name;
int namelen = strlen(name);
if (namelen < patlen ||
memcmp(name + namelen - patlen, pattern, patlen))
continue;
if (namelen != patlen && name[namelen - patlen - 1] != '/')
continue;
match++;
remote_ref = refs;
}
if (match == 0)
return error("No remote branch matches %s", pattern);
if (match != 1)
return error("More than one remote branch matches %s",
pattern);
/*
* Remote HEAD must be a symref (not exactly foolproof; a remote
* symlink to a symref will look like a symref)
*/
fetch_symref("HEAD", &symref, head_sha1);
if (!symref)
return error("Remote HEAD is not a symref");
/* Remote branch must not be the remote HEAD */
for (i=0; symref && i<MAXDEPTH; i++) {
if (!strcmp(remote_ref->name, symref))
return error("Remote branch %s is the current HEAD",
remote_ref->name);
fetch_symref(symref, &symref, head_sha1);
}
/* Run extra sanity checks if delete is not forced */
if (!force) {
/* Remote HEAD must resolve to a known object */
if (symref)
return error("Remote HEAD symrefs too deep");
if (is_zero_sha1(head_sha1))
return error("Unable to resolve remote HEAD");
if (!has_sha1_file(head_sha1))
return error("Remote HEAD resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", sha1_to_hex(head_sha1));
/* Remote branch must resolve to a known object */
if (is_zero_sha1(remote_ref->old_sha1))
return error("Unable to resolve remote branch %s",
remote_ref->name);
if (!has_sha1_file(remote_ref->old_sha1))
return error("Remote branch %s resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", remote_ref->name, sha1_to_hex(remote_ref->old_sha1));
/* Remote branch must be an ancestor of remote HEAD */
if (!verify_merge_base(head_sha1, remote_ref->old_sha1)) {
return error("The branch '%s' is not an ancestor "
"of your current HEAD.\n"
"If you are sure you want to delete it,"
" run:\n\t'git http-push -D %s %s'",
remote_ref->name, remote->url, pattern);
}
}
/* Send delete request */
fprintf(stderr, "Removing remote branch '%s'\n", remote_ref->name);
url = xmalloc(strlen(remote->url) + strlen(remote_ref->name) + 1);
sprintf(url, "%s%s", remote->url, remote_ref->name);
slot = get_active_slot();
slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_DELETE);
if (start_active_slot(slot)) {
run_active_slot(slot);
free(url);
if (results.curl_result != CURLE_OK)
return error("DELETE request failed (%d/%ld)\n",
results.curl_result, results.http_code);
} else {
free(url);
return error("Unable to start DELETE request");
}
return 0;
}
int main(int argc, char **argv)
{
struct transfer_request *request;
struct transfer_request *next_request;
int nr_refspec = 0;
char **refspec = NULL;
struct remote_lock *ref_lock = NULL;
struct remote_lock *info_ref_lock = NULL;
struct rev_info revs;
int delete_branch = 0;
int force_delete = 0;
int objects_to_send;
int rc = 0;
int i;
int new_refs;
struct ref *ref;
setup_git_directory();
remote = xcalloc(sizeof(*remote), 1);
argv++;
for (i = 1; i < argc; i++, argv++) {
char *arg = *argv;
if (*arg == '-') {
if (!strcmp(arg, "--all")) {
push_all = MATCH_REFS_ALL;
continue;
}
if (!strcmp(arg, "--force")) {
force_all = 1;
continue;
}
if (!strcmp(arg, "--dry-run")) {
dry_run = 1;
continue;
}
if (!strcmp(arg, "--verbose")) {
push_verbosely = 1;
continue;
}
if (!strcmp(arg, "-d")) {
delete_branch = 1;
continue;
}
if (!strcmp(arg, "-D")) {
delete_branch = 1;
force_delete = 1;
continue;
}
}
if (!remote->url) {
char *path = strstr(arg, "//");
remote->url = arg;
if (path) {
path = strchr(path+2, '/');
if (path)
remote->path_len = strlen(path);
}
continue;
}
refspec = argv;
nr_refspec = argc - i;
break;
}
if (!remote->url)
usage(http_push_usage);
if (delete_branch && nr_refspec != 1)
die("You must specify only one branch name when deleting a remote branch");
memset(remote_dir_exists, -1, 256);
http_init();
no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
default_headers = curl_slist_append(default_headers, "Range:");
default_headers = curl_slist_append(default_headers, "Destination:");
default_headers = curl_slist_append(default_headers, "If:");
default_headers = curl_slist_append(default_headers,
"Pragma: no-cache");
/* Verify DAV compliance/lock support */
if (!locking_available()) {
fprintf(stderr, "Error: no DAV locking support on remote repo %s\n", remote->url);
rc = 1;
goto cleanup;
}
/* Check whether the remote has server info files */
remote->can_update_info_refs = 0;
remote->has_info_refs = remote_exists("info/refs");
remote->has_info_packs = remote_exists("objects/info/packs");
if (remote->has_info_refs) {
info_ref_lock = lock_remote("info/refs", LOCK_TIME);
if (info_ref_lock)
remote->can_update_info_refs = 1;
}
if (remote->has_info_packs)
fetch_indices();
/* Get a list of all local and remote heads to validate refspecs */
get_local_heads();
fprintf(stderr, "Fetching remote heads...\n");
get_dav_remote_heads();
/* Remove a remote branch if -d or -D was specified */
if (delete_branch) {
if (delete_remote_branch(refspec[0], force_delete) == -1)
fprintf(stderr, "Unable to delete remote branch %s\n",
refspec[0]);
goto cleanup;
}
/* match them up */
if (!remote_tail)
remote_tail = &remote_refs;
if (match_refs(local_refs, remote_refs, &remote_tail,
nr_refspec, (const char **) refspec, push_all))
return -1;
if (!remote_refs) {
fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
return 0;
}
new_refs = 0;
for (ref = remote_refs; ref; ref = ref->next) {
char old_hex[60], *new_hex;
const char *commit_argv[4];
int commit_argc;
char *new_sha1_hex, *old_sha1_hex;
if (!ref->peer_ref)
continue;
if (!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) {
if (push_verbosely || 1)
fprintf(stderr, "'%s': up-to-date\n", ref->name);
continue;
}
if (!force_all &&
!is_zero_sha1(ref->old_sha1) &&
!ref->force) {
if (!has_sha1_file(ref->old_sha1) ||
!ref_newer(ref->peer_ref->new_sha1,
ref->old_sha1)) {
/*
* We do not have the remote ref, or
* we know that the remote ref is not
* an ancestor of what we are trying to
* push. Either way this can be losing
* commits at the remote end and likely
* we were not up to date to begin with.
*/
error("remote '%s' is not an ancestor of\n"
"local '%s'.\n"
"Maybe you are not up-to-date and "
"need to pull first?",
ref->name,
ref->peer_ref->name);
rc = -2;
continue;
}
}
hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
if (is_zero_sha1(ref->new_sha1)) {
error("cannot happen anymore");
rc = -3;
continue;
}
new_refs++;
strcpy(old_hex, sha1_to_hex(ref->old_sha1));
new_hex = sha1_to_hex(ref->new_sha1);
fprintf(stderr, "updating '%s'", ref->name);
if (strcmp(ref->name, ref->peer_ref->name))
fprintf(stderr, " using '%s'", ref->peer_ref->name);
fprintf(stderr, "\n from %s\n to %s\n", old_hex, new_hex);
if (dry_run)
continue;
/* Lock remote branch ref */
ref_lock = lock_remote(ref->name, LOCK_TIME);
if (ref_lock == NULL) {
fprintf(stderr, "Unable to lock remote branch %s\n",
ref->name);
rc = 1;
continue;
}
/* Set up revision info for this refspec */
commit_argc = 3;
new_sha1_hex = xstrdup(sha1_to_hex(ref->new_sha1));
old_sha1_hex = NULL;
commit_argv[1] = "--objects";
commit_argv[2] = new_sha1_hex;
if (!push_all && !is_zero_sha1(ref->old_sha1)) {
old_sha1_hex = xmalloc(42);
sprintf(old_sha1_hex, "^%s",
sha1_to_hex(ref->old_sha1));
commit_argv[3] = old_sha1_hex;
commit_argc++;
}
init_revisions(&revs, setup_git_directory());
setup_revisions(commit_argc, commit_argv, &revs, NULL);
free(new_sha1_hex);
if (old_sha1_hex) {
free(old_sha1_hex);
commit_argv[1] = NULL;
}
/* Generate a list of objects that need to be pushed */
pushing = 0;
prepare_revision_walk(&revs);
mark_edges_uninteresting(revs.commits);
objects_to_send = get_delta(&revs, ref_lock);
finish_all_active_slots();
/* Push missing objects to remote, this would be a
convenient time to pack them first if appropriate. */
pushing = 1;
if (objects_to_send)
fprintf(stderr, " sending %d objects\n",
objects_to_send);
#ifdef USE_CURL_MULTI
fill_active_slots();
add_fill_function(NULL, fill_active_slot);
#endif
finish_all_active_slots();
/* Update the remote branch if all went well */
if (aborted || !update_remote(ref->new_sha1, ref_lock)) {
rc = 1;
goto unlock;
}
unlock:
if (!rc)
fprintf(stderr, " done\n");
unlock_remote(ref_lock);
check_locks();
}
/* Update remote server info if appropriate */
if (remote->has_info_refs && new_refs) {
if (info_ref_lock && remote->can_update_info_refs) {
fprintf(stderr, "Updating remote server info\n");
if (!dry_run)
update_remote_info_refs(info_ref_lock);
} else {
fprintf(stderr, "Unable to update server info\n");
}
}
if (info_ref_lock)
unlock_remote(info_ref_lock);
cleanup:
free(remote);
curl_slist_free_all(no_pragma_header);
curl_slist_free_all(default_headers);
http_cleanup();
request = request_queue_head;
while (request != NULL) {
next_request = request->next;
release_request(request);
request = next_request;
}
return rc;
}
|
