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
|
#include "git-compat-util.h"
#include "http.h"
#include "config.h"
#include "pack.h"
#include "sideband.h"
#include "run-command.h"
#include "url.h"
#include "urlmatch.h"
#include "credential.h"
#include "version.h"
#include "pkt-line.h"
#include "gettext.h"
#include "transport.h"
#include "packfile.h"
#include "protocol.h"
#include "string-list.h"
#include "object-store.h"
static struct trace_key trace_curl = TRACE_KEY_INIT(CURL);
static int trace_curl_data = 1;
static struct string_list cookies_to_redact = STRING_LIST_INIT_DUP;
#if LIBCURL_VERSION_NUM >= 0x070a08
long int git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
#else
long int git_curl_ipresolve;
#endif
int active_requests;
int http_is_verbose;
ssize_t http_post_buffer = 16 * LARGE_PACKET_MAX;
#if LIBCURL_VERSION_NUM >= 0x070a06
#define LIBCURL_CAN_HANDLE_AUTH_ANY
#endif
static int min_curl_sessions = 1;
static int curl_session_count;
#ifdef USE_CURL_MULTI
static int max_requests = -1;
static CURLM *curlm;
#endif
#ifndef NO_CURL_EASY_DUPHANDLE
static CURL *curl_default;
#endif
#define PREV_BUF_SIZE 4096
char curl_errorstr[CURL_ERROR_SIZE];
static int curl_ssl_verify = -1;
static int curl_ssl_try;
static const char *ssl_cert;
static const char *ssl_cipherlist;
static const char *ssl_version;
static struct {
const char *name;
long ssl_version;
} sslversions[] = {
{ "sslv2", CURL_SSLVERSION_SSLv2 },
{ "sslv3", CURL_SSLVERSION_SSLv3 },
{ "tlsv1", CURL_SSLVERSION_TLSv1 },
#if LIBCURL_VERSION_NUM >= 0x072200
{ "tlsv1.0", CURL_SSLVERSION_TLSv1_0 },
{ "tlsv1.1", CURL_SSLVERSION_TLSv1_1 },
{ "tlsv1.2", CURL_SSLVERSION_TLSv1_2 },
#endif
#if LIBCURL_VERSION_NUM >= 0x073400
{ "tlsv1.3", CURL_SSLVERSION_TLSv1_3 },
#endif
};
#if LIBCURL_VERSION_NUM >= 0x070903
static const char *ssl_key;
#endif
#if LIBCURL_VERSION_NUM >= 0x070908
static const char *ssl_capath;
#endif
#if LIBCURL_VERSION_NUM >= 0x071304
static const char *curl_no_proxy;
#endif
#if LIBCURL_VERSION_NUM >= 0x072c00
static const char *ssl_pinnedkey;
#endif
static const char *ssl_cainfo;
static long curl_low_speed_limit = -1;
static long curl_low_speed_time = -1;
static int curl_ftp_no_epsv;
static const char *curl_http_proxy;
static const char *http_proxy_authmethod;
static struct {
const char *name;
long curlauth_param;
} proxy_authmethods[] = {
{ "basic", CURLAUTH_BASIC },
{ "digest", CURLAUTH_DIGEST },
{ "negotiate", CURLAUTH_GSSNEGOTIATE },
{ "ntlm", CURLAUTH_NTLM },
#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
{ "anyauth", CURLAUTH_ANY },
#endif
/*
* CURLAUTH_DIGEST_IE has no corresponding command-line option in
* curl(1) and is not included in CURLAUTH_ANY, so we leave it out
* here, too
*/
};
#ifdef CURLGSSAPI_DELEGATION_FLAG
static const char *curl_deleg;
static struct {
const char *name;
long curl_deleg_param;
} curl_deleg_levels[] = {
{ "none", CURLGSSAPI_DELEGATION_NONE },
{ "policy", CURLGSSAPI_DELEGATION_POLICY_FLAG },
{ "always", CURLGSSAPI_DELEGATION_FLAG },
};
#endif
static struct credential proxy_auth = CREDENTIAL_INIT;
static const char *curl_proxyuserpwd;
static const char *curl_cookie_file;
static int curl_save_cookies;
struct credential http_auth = CREDENTIAL_INIT;
static int http_proactive_auth;
static const char *user_agent;
static int curl_empty_auth = -1;
enum http_follow_config http_follow_config = HTTP_FOLLOW_INITIAL;
#if LIBCURL_VERSION_NUM >= 0x071700
/* Use CURLOPT_KEYPASSWD as is */
#elif LIBCURL_VERSION_NUM >= 0x070903
#define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
#else
#define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
#endif
static struct credential cert_auth = CREDENTIAL_INIT;
static int ssl_cert_password_required;
#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
static unsigned long http_auth_methods = CURLAUTH_ANY;
static int http_auth_methods_restricted;
/* Modes for which empty_auth cannot actually help us. */
static unsigned long empty_auth_useless =
CURLAUTH_BASIC
#ifdef CURLAUTH_DIGEST_IE
| CURLAUTH_DIGEST_IE
#endif
| CURLAUTH_DIGEST;
#endif
static struct curl_slist *pragma_header;
static struct curl_slist *no_pragma_header;
static struct curl_slist *extra_http_headers;
static struct active_request_slot *active_queue_head;
static char *cached_accept_language;
size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
{
size_t size = eltsize * nmemb;
struct buffer *buffer = buffer_;
if (size > buffer->buf.len - buffer->posn)
size = buffer->buf.len - buffer->posn;
memcpy(ptr, buffer->buf.buf + buffer->posn, size);
buffer->posn += size;
return size;
}
#ifndef NO_CURL_IOCTL
curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp)
{
struct buffer *buffer = clientp;
switch (cmd) {
case CURLIOCMD_NOP:
return CURLIOE_OK;
case CURLIOCMD_RESTARTREAD:
buffer->posn = 0;
return CURLIOE_OK;
default:
return CURLIOE_UNKNOWNCMD;
}
}
#endif
size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
{
size_t size = eltsize * nmemb;
struct strbuf *buffer = buffer_;
strbuf_add(buffer, ptr, size);
return size;
}
size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf)
{
return eltsize * nmemb;
}
static void closedown_active_slot(struct active_request_slot *slot)
{
active_requests--;
slot->in_use = 0;
}
static void finish_active_slot(struct active_request_slot *slot)
{
closedown_active_slot(slot);
curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
if (slot->finished != NULL)
(*slot->finished) = 1;
/* Store slot results so they can be read after the slot is reused */
if (slot->results != NULL) {
slot->results->curl_result = slot->curl_result;
slot->results->http_code = slot->http_code;
#if LIBCURL_VERSION_NUM >= 0x070a08
curl_easy_getinfo(slot->curl, CURLINFO_HTTPAUTH_AVAIL,
&slot->results->auth_avail);
#else
slot->results->auth_avail = 0;
#endif
curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CONNECTCODE,
&slot->results->http_connectcode);
}
/* Run callback if appropriate */
if (slot->callback_func != NULL)
slot->callback_func(slot->callback_data);
}
static void xmulti_remove_handle(struct active_request_slot *slot)
{
#ifdef USE_CURL_MULTI
curl_multi_remove_handle(curlm, slot->curl);
#endif
}
#ifdef USE_CURL_MULTI
static void process_curl_messages(void)
{
int num_messages;
struct active_request_slot *slot;
CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages);
while (curl_message != NULL) {
if (curl_message->msg == CURLMSG_DONE) {
int curl_result = curl_message->data.result;
slot = active_queue_head;
while (slot != NULL &&
slot->curl != curl_message->easy_handle)
slot = slot->next;
if (slot != NULL) {
xmulti_remove_handle(slot);
slot->curl_result = curl_result;
finish_active_slot(slot);
} else {
fprintf(stderr, "Received DONE message for unknown request!\n");
}
} else {
fprintf(stderr, "Unknown CURL message received: %d\n",
(int)curl_message->msg);
}
curl_message = curl_multi_info_read(curlm, &num_messages);
}
}
#endif
static int http_options(const char *var, const char *value, void *cb)
{
if (!strcmp("http.sslverify", var)) {
curl_ssl_verify = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.sslcipherlist", var))
return git_config_string(&ssl_cipherlist, var, value);
if (!strcmp("http.sslversion", var))
return git_config_string(&ssl_version, var, value);
if (!strcmp("http.sslcert", var))
return git_config_pathname(&ssl_cert, var, value);
#if LIBCURL_VERSION_NUM >= 0x070903
if (!strcmp("http.sslkey", var))
return git_config_pathname(&ssl_key, var, value);
#endif
#if LIBCURL_VERSION_NUM >= 0x070908
if (!strcmp("http.sslcapath", var))
return git_config_pathname(&ssl_capath, var, value);
#endif
if (!strcmp("http.sslcainfo", var))
return git_config_pathname(&ssl_cainfo, var, value);
if (!strcmp("http.sslcertpasswordprotected", var)) {
ssl_cert_password_required = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.ssltry", var)) {
curl_ssl_try = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.minsessions", var)) {
min_curl_sessions = git_config_int(var, value);
#ifndef USE_CURL_MULTI
if (min_curl_sessions > 1)
min_curl_sessions = 1;
#endif
return 0;
}
#ifdef USE_CURL_MULTI
if (!strcmp("http.maxrequests", var)) {
max_requests = git_config_int(var, value);
return 0;
}
#endif
if (!strcmp("http.lowspeedlimit", var)) {
curl_low_speed_limit = (long)git_config_int(var, value);
return 0;
}
if (!strcmp("http.lowspeedtime", var)) {
curl_low_speed_time = (long)git_config_int(var, value);
return 0;
}
if (!strcmp("http.noepsv", var)) {
curl_ftp_no_epsv = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.proxy", var))
return git_config_string(&curl_http_proxy, var, value);
if (!strcmp("http.proxyauthmethod", var))
return git_config_string(&http_proxy_authmethod, var, value);
if (!strcmp("http.cookiefile", var))
return git_config_pathname(&curl_cookie_file, var, value);
if (!strcmp("http.savecookies", var)) {
curl_save_cookies = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.postbuffer", var)) {
http_post_buffer = git_config_ssize_t(var, value);
if (http_post_buffer < 0)
warning(_("negative value for http.postbuffer; defaulting to %d"), LARGE_PACKET_MAX);
if (http_post_buffer < LARGE_PACKET_MAX)
http_post_buffer = LARGE_PACKET_MAX;
return 0;
}
if (!strcmp("http.useragent", var))
return git_config_string(&user_agent, var, value);
if (!strcmp("http.emptyauth", var)) {
if (value && !strcmp("auto", value))
curl_empty_auth = -1;
else
curl_empty_auth = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.delegation", var)) {
#ifdef CURLGSSAPI_DELEGATION_FLAG
return git_config_string(&curl_deleg, var, value);
#else
warning(_("Delegation control is not supported with cURL < 7.22.0"));
return 0;
#endif
}
if (!strcmp("http.pinnedpubkey", var)) {
#if LIBCURL_VERSION_NUM >= 0x072c00
return git_config_pathname(&ssl_pinnedkey, var, value);
#else
warning(_("Public key pinning not supported with cURL < 7.44.0"));
return 0;
#endif
}
if (!strcmp("http.extraheader", var)) {
if (!value) {
return config_error_nonbool(var);
} else if (!*value) {
curl_slist_free_all(extra_http_headers);
extra_http_headers = NULL;
} else {
extra_http_headers =
curl_slist_append(extra_http_headers, value);
}
return 0;
}
if (!strcmp("http.followredirects", var)) {
if (value && !strcmp(value, "initial"))
http_follow_config = HTTP_FOLLOW_INITIAL;
else if (git_config_bool(var, value))
http_follow_config = HTTP_FOLLOW_ALWAYS;
else
http_follow_config = HTTP_FOLLOW_NONE;
return 0;
}
/* Fall back on the default ones */
return git_default_config(var, value, cb);
}
static int curl_empty_auth_enabled(void)
{
if (curl_empty_auth >= 0)
return curl_empty_auth;
#ifndef LIBCURL_CAN_HANDLE_AUTH_ANY
/*
* Our libcurl is too old to do AUTH_ANY in the first place;
* just default to turning the feature off.
*/
#else
/*
* In the automatic case, kick in the empty-auth
* hack as long as we would potentially try some
* method more exotic than "Basic" or "Digest".
*
* But only do this when this is our second or
* subsequent request, as by then we know what
* methods are available.
*/
if (http_auth_methods_restricted &&
(http_auth_methods & ~empty_auth_useless))
return 1;
#endif
return 0;
}
static void init_curl_http_auth(CURL *result)
{
if (!http_auth.username || !*http_auth.username) {
if (curl_empty_auth_enabled())
curl_easy_setopt(result, CURLOPT_USERPWD, ":");
return;
}
credential_fill(&http_auth);
#if LIBCURL_VERSION_NUM >= 0x071301
curl_easy_setopt(result, CURLOPT_USERNAME, http_auth.username);
curl_easy_setopt(result, CURLOPT_PASSWORD, http_auth.password);
#else
{
static struct strbuf up = STRBUF_INIT;
/*
* Note that we assume we only ever have a single set of
* credentials in a given program run, so we do not have
* to worry about updating this buffer, only setting its
* initial value.
*/
if (!up.len)
strbuf_addf(&up, "%s:%s",
http_auth.username, http_auth.password);
curl_easy_setopt(result, CURLOPT_USERPWD, up.buf);
}
#endif
}
/* *var must be free-able */
static void var_override(const char **var, char *value)
{
if (value) {
free((void *)*var);
*var = xstrdup(value);
}
}
static void set_proxyauth_name_password(CURL *result)
{
#if LIBCURL_VERSION_NUM >= 0x071301
curl_easy_setopt(result, CURLOPT_PROXYUSERNAME,
proxy_auth.username);
curl_easy_setopt(result, CURLOPT_PROXYPASSWORD,
proxy_auth.password);
#else
struct strbuf s = STRBUF_INIT;
strbuf_addstr_urlencode(&s, proxy_auth.username, 1);
strbuf_addch(&s, ':');
strbuf_addstr_urlencode(&s, proxy_auth.password, 1);
curl_proxyuserpwd = strbuf_detach(&s, NULL);
curl_easy_setopt(result, CURLOPT_PROXYUSERPWD, curl_proxyuserpwd);
#endif
}
static void init_curl_proxy_auth(CURL *result)
{
if (proxy_auth.username) {
if (!proxy_auth.password)
credential_fill(&proxy_auth);
set_proxyauth_name_password(result);
}
var_override(&http_proxy_authmethod, getenv("GIT_HTTP_PROXY_AUTHMETHOD"));
#if LIBCURL_VERSION_NUM >= 0x070a07 /* CURLOPT_PROXYAUTH and CURLAUTH_ANY */
if (http_proxy_authmethod) {
int i;
for (i = 0; i < ARRAY_SIZE(proxy_authmethods); i++) {
if (!strcmp(http_proxy_authmethod, proxy_authmethods[i].name)) {
curl_easy_setopt(result, CURLOPT_PROXYAUTH,
proxy_authmethods[i].curlauth_param);
break;
}
}
if (i == ARRAY_SIZE(proxy_authmethods)) {
warning("unsupported proxy authentication method %s: using anyauth",
http_proxy_authmethod);
curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
}
}
else
curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
#endif
}
static int has_cert_password(void)
{
if (ssl_cert == NULL || ssl_cert_password_required != 1)
return 0;
if (!cert_auth.password) {
cert_auth.protocol = xstrdup("cert");
cert_auth.username = xstrdup("");
cert_auth.path = xstrdup(ssl_cert);
credential_fill(&cert_auth);
}
return 1;
}
#if LIBCURL_VERSION_NUM >= 0x071900
static void set_curl_keepalive(CURL *c)
{
curl_easy_setopt(c, CURLOPT_TCP_KEEPALIVE, 1);
}
#elif LIBCURL_VERSION_NUM >= 0x071000
static int sockopt_callback(void *client, curl_socket_t fd, curlsocktype type)
{
int ka = 1;
int rc;
socklen_t len = (socklen_t)sizeof(ka);
if (type != CURLSOCKTYPE_IPCXN)
return 0;
rc = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&ka, len);
if (rc < 0)
warning_errno("unable to set SO_KEEPALIVE on socket");
return 0; /* CURL_SOCKOPT_OK only exists since curl 7.21.5 */
}
static void set_curl_keepalive(CURL *c)
{
curl_easy_setopt(c, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
}
#else
static void set_curl_keepalive(CURL *c)
{
/* not supported on older curl versions */
}
#endif
static void redact_sensitive_header(struct strbuf *header)
{
const char *sensitive_header;
if (skip_prefix(header->buf, "Authorization:", &sensitive_header) ||
skip_prefix(header->buf, "Proxy-Authorization:", &sensitive_header)) {
/* The first token is the type, which is OK to log */
while (isspace(*sensitive_header))
sensitive_header++;
while (*sensitive_header && !isspace(*sensitive_header))
sensitive_header++;
/* Everything else is opaque and possibly sensitive */
strbuf_setlen(header, sensitive_header - header->buf);
strbuf_addstr(header, " <redacted>");
} else if (cookies_to_redact.nr &&
skip_prefix(header->buf, "Cookie:", &sensitive_header)) {
struct strbuf redacted_header = STRBUF_INIT;
char *cookie;
while (isspace(*sensitive_header))
sensitive_header++;
/*
* The contents of header starting from sensitive_header will
* subsequently be overridden, so it is fine to mutate this
* string (hence the assignment to "char *").
*/
cookie = (char *) sensitive_header;
while (cookie) {
char *equals;
char *semicolon = strstr(cookie, "; ");
if (semicolon)
*semicolon = 0;
equals = strchrnul(cookie, '=');
if (!equals) {
/* invalid cookie, just append and continue */
strbuf_addstr(&redacted_header, cookie);
continue;
}
*equals = 0; /* temporarily set to NUL for lookup */
if (string_list_lookup(&cookies_to_redact, cookie)) {
strbuf_addstr(&redacted_header, cookie);
strbuf_addstr(&redacted_header, "=<redacted>");
} else {
*equals = '=';
strbuf_addstr(&redacted_header, cookie);
}
if (semicolon) {
/*
* There are more cookies. (Or, for some
* reason, the input string ends in "; ".)
*/
strbuf_addstr(&redacted_header, "; ");
cookie = semicolon + strlen("; ");
} else {
cookie = NULL;
}
}
strbuf_setlen(header, sensitive_header - header->buf);
strbuf_addbuf(header, &redacted_header);
}
}
static void curl_dump_header(const char *text, unsigned char *ptr, size_t size, int hide_sensitive_header)
{
struct strbuf out = STRBUF_INIT;
struct strbuf **headers, **header;
strbuf_addf(&out, "%s, %10.10ld bytes (0x%8.8lx)\n",
text, (long)size, (long)size);
trace_strbuf(&trace_curl, &out);
strbuf_reset(&out);
strbuf_add(&out, ptr, size);
headers = strbuf_split_max(&out, '\n', 0);
for (header = headers; *header; header++) {
if (hide_sensitive_header)
redact_sensitive_header(*header);
strbuf_insert((*header), 0, text, strlen(text));
strbuf_insert((*header), strlen(text), ": ", 2);
strbuf_rtrim((*header));
strbuf_addch((*header), '\n');
trace_strbuf(&trace_curl, (*header));
}
strbuf_list_free(headers);
strbuf_release(&out);
}
static void curl_dump_data(const char *text, unsigned char *ptr, size_t size)
{
size_t i;
struct strbuf out = STRBUF_INIT;
unsigned int width = 60;
strbuf_addf(&out, "%s, %10.10ld bytes (0x%8.8lx)\n",
text, (long)size, (long)size);
trace_strbuf(&trace_curl, &out);
for (i = 0; i < size; i += width) {
size_t w;
strbuf_reset(&out);
strbuf_addf(&out, "%s: ", text);
for (w = 0; (w < width) && (i + w < size); w++) {
unsigned char ch = ptr[i + w];
strbuf_addch(&out,
(ch >= 0x20) && (ch < 0x80)
? ch : '.');
}
strbuf_addch(&out, '\n');
trace_strbuf(&trace_curl, &out);
}
strbuf_release(&out);
}
static int curl_trace(CURL *handle, curl_infotype type, char *data, size_t size, void *userp)
{
const char *text;
enum { NO_FILTER = 0, DO_FILTER = 1 };
switch (type) {
case CURLINFO_TEXT:
trace_printf_key(&trace_curl, "== Info: %s", data);
break;
case CURLINFO_HEADER_OUT:
text = "=> Send header";
curl_dump_header(text, (unsigned char *)data, size, DO_FILTER);
break;
case CURLINFO_DATA_OUT:
if (trace_curl_data) {
text = "=> Send data";
curl_dump_data(text, (unsigned char *)data, size);
}
break;
case CURLINFO_SSL_DATA_OUT:
if (trace_curl_data) {
text = "=> Send SSL data";
curl_dump_data(text, (unsigned char *)data, size);
}
break;
case CURLINFO_HEADER_IN:
text = "<= Recv header";
curl_dump_header(text, (unsigned char *)data, size, NO_FILTER);
break;
case CURLINFO_DATA_IN:
if (trace_curl_data) {
text = "<= Recv data";
curl_dump_data(text, (unsigned char *)data, size);
}
break;
case CURLINFO_SSL_DATA_IN:
if (trace_curl_data) {
text = "<= Recv SSL data";
curl_dump_data(text, (unsigned char *)data, size);
}
break;
default: /* we ignore unknown types by default */
return 0;
}
return 0;
}
void setup_curl_trace(CURL *handle)
{
if (!trace_want(&trace_curl))
return;
curl_easy_setopt(handle, CURLOPT_VERBOSE, 1L);
curl_easy_setopt(handle, CURLOPT_DEBUGFUNCTION, curl_trace);
curl_easy_setopt(handle, CURLOPT_DEBUGDATA, NULL);
}
#ifdef CURLPROTO_HTTP
static long get_curl_allowed_protocols(int from_user)
{
long allowed_protocols = 0;
if (is_transport_allowed("http", from_user))
allowed_protocols |= CURLPROTO_HTTP;
if (is_transport_allowed("https", from_user))
allowed_protocols |= CURLPROTO_HTTPS;
if (is_transport_allowed("ftp", from_user))
allowed_protocols |= CURLPROTO_FTP;
if (is_transport_allowed("ftps", from_user))
allowed_protocols |= CURLPROTO_FTPS;
return allowed_protocols;
}
#endif
static CURL *get_curl_handle(void)
{
CURL *result = curl_easy_init();
if (!result)
die("curl_easy_init failed");
if (!curl_ssl_verify) {
curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0);
curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0);
} else {
/* Verify authenticity of the peer's certificate */
curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1);
/* The name in the cert must match whom we tried to connect */
curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2);
}
#if LIBCURL_VERSION_NUM >= 0x070907
curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
#endif
#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
#endif
#ifdef CURLGSSAPI_DELEGATION_FLAG
if (curl_deleg) {
int i;
for (i = 0; i < ARRAY_SIZE(curl_deleg_levels); i++) {
if (!strcmp(curl_deleg, curl_deleg_levels[i].name)) {
curl_easy_setopt(result, CURLOPT_GSSAPI_DELEGATION,
curl_deleg_levels[i].curl_deleg_param);
break;
}
}
if (i == ARRAY_SIZE(curl_deleg_levels))
warning("Unknown delegation method '%s': using default",
curl_deleg);
}
#endif
if (http_proactive_auth)
init_curl_http_auth(result);
if (getenv("GIT_SSL_VERSION"))
ssl_version = getenv("GIT_SSL_VERSION");
if (ssl_version && *ssl_version) {
int i;
for (i = 0; i < ARRAY_SIZE(sslversions); i++) {
if (!strcmp(ssl_version, sslversions[i].name)) {
curl_easy_setopt(result, CURLOPT_SSLVERSION,
sslversions[i].ssl_version);
break;
}
}
if (i == ARRAY_SIZE(sslversions))
warning("unsupported ssl version %s: using default",
ssl_version);
}
if (getenv("GIT_SSL_CIPHER_LIST"))
ssl_cipherlist = getenv("GIT_SSL_CIPHER_LIST");
if (ssl_cipherlist != NULL && *ssl_cipherlist)
curl_easy_setopt(result, CURLOPT_SSL_CIPHER_LIST,
ssl_cipherlist);
if (ssl_cert != NULL)
curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
if (has_cert_password())
curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password);
#if LIBCURL_VERSION_NUM >= 0x070903
if (ssl_key != NULL)
curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key);
#endif
#if LIBCURL_VERSION_NUM >= 0x070908
if (ssl_capath != NULL)
curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath);
#endif
#if LIBCURL_VERSION_NUM >= 0x072c00
if (ssl_pinnedkey != NULL)
curl_easy_setopt(result, CURLOPT_PINNEDPUBLICKEY, ssl_pinnedkey);
#endif
if (ssl_cainfo != NULL)
curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo);
if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) {
curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT,
curl_low_speed_limit);
curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME,
curl_low_speed_time);
}
curl_easy_setopt(result, CURLOPT_MAXREDIRS, 20);
#if LIBCURL_VERSION_NUM >= 0x071301
curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
#elif LIBCURL_VERSION_NUM >= 0x071101
curl_easy_setopt(result, CURLOPT_POST301, 1);
#endif
#ifdef CURLPROTO_HTTP
curl_easy_setopt(result, CURLOPT_REDIR_PROTOCOLS,
get_curl_allowed_protocols(0));
curl_easy_setopt(result, CURLOPT_PROTOCOLS,
get_curl_allowed_protocols(-1));
#else
warning("protocol restrictions not applied to curl redirects because\n"
"your curl version is too old (>= 7.19.4)");
#endif
if (getenv("GIT_CURL_VERBOSE"))
curl_easy_setopt(result, CURLOPT_VERBOSE, 1L);
setup_curl_trace(result);
if (getenv("GIT_TRACE_CURL_NO_DATA"))
trace_curl_data = 0;
if (getenv("GIT_REDACT_COOKIES")) {
string_list_split(&cookies_to_redact,
getenv("GIT_REDACT_COOKIES"), ',', -1);
string_list_sort(&cookies_to_redact);
}
curl_easy_setopt(result, CURLOPT_USERAGENT,
user_agent ? user_agent : git_user_agent());
if (curl_ftp_no_epsv)
curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0);
#ifdef CURLOPT_USE_SSL
if (curl_ssl_try)
curl_easy_setopt(result, CURLOPT_USE_SSL, CURLUSESSL_TRY);
#endif
/*
* CURL also examines these variables as a fallback; but we need to query
* them here in order to decide whether to prompt for missing password (cf.
* init_curl_proxy_auth()).
*
* Unlike many other common environment variables, these are historically
* lowercase only. It appears that CURL did not know this and implemented
* only uppercase variants, which was later corrected to take both - with
* the exception of http_proxy, which is lowercase only also in CURL. As
* the lowercase versions are the historical quasi-standard, they take
* precedence here, as in CURL.
*/
if (!curl_http_proxy) {
if (http_auth.protocol && !strcmp(http_auth.protocol, "https")) {
var_override(&curl_http_proxy, getenv("HTTPS_PROXY"));
var_override(&curl_http_proxy, getenv("https_proxy"));
} else {
var_override(&curl_http_proxy, getenv("http_proxy"));
}
if (!curl_http_proxy) {
var_override(&curl_http_proxy, getenv("ALL_PROXY"));
var_override(&curl_http_proxy, getenv("all_proxy"));
}
}
if (curl_http_proxy && curl_http_proxy[0] == '\0') {
/*
* Handle case with the empty http.proxy value here to keep
* common code clean.
* NB: empty option disables proxying at all.
*/
curl_easy_setopt(result, CURLOPT_PROXY, "");
} else if (curl_http_proxy) {
#if LIBCURL_VERSION_NUM >= 0x071800
if (starts_with(curl_http_proxy, "socks5h"))
curl_easy_setopt(result,
CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5_HOSTNAME);
else if (starts_with(curl_http_proxy, "socks5"))
curl_easy_setopt(result,
CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
else if (starts_with(curl_http_proxy, "socks4a"))
curl_easy_setopt(result,
CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4A);
else if (starts_with(curl_http_proxy, "socks"))
curl_easy_setopt(result,
CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4);
#endif
#if LIBCURL_VERSION_NUM >= 0x073400
else if (starts_with(curl_http_proxy, "https"))
curl_easy_setopt(result,
CURLOPT_PROXYTYPE, CURLPROXY_HTTPS);
#endif
if (strstr(curl_http_proxy, "://"))
credential_from_url(&proxy_auth, curl_http_proxy);
else {
struct strbuf url = STRBUF_INIT;
strbuf_addf(&url, "http://%s", curl_http_proxy);
credential_from_url(&proxy_auth, url.buf);
strbuf_release(&url);
}
if (!proxy_auth.host)
die("Invalid proxy URL '%s'", curl_http_proxy);
curl_easy_setopt(result, CURLOPT_PROXY, proxy_auth.host);
#if LIBCURL_VERSION_NUM >= 0x071304
var_override(&curl_no_proxy, getenv("NO_PROXY"));
var_override(&curl_no_proxy, getenv("no_proxy"));
curl_easy_setopt(result, CURLOPT_NOPROXY, curl_no_proxy);
#endif
}
init_curl_proxy_auth(result);
set_curl_keepalive(result);
return result;
}
static void set_from_env(const char **var, const char *envname)
{
const char *val = getenv(envname);
if (val)
*var = val;
}
void http_init(struct remote *remote, const char *url, int proactive_auth)
{
char *low_speed_limit;
char *low_speed_time;
char *normalized_url;
struct urlmatch_config config = { STRING_LIST_INIT_DUP };
config.section = "http";
config.key = NULL;
config.collect_fn = http_options;
config.cascade_fn = git_default_config;
config.cb = NULL;
http_is_verbose = 0;
normalized_url = url_normalize(url, &config.url);
git_config(urlmatch_config_entry, &config);
free(normalized_url);
if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
die("curl_global_init failed");
http_proactive_auth = proactive_auth;
if (remote && remote->http_proxy)
curl_http_proxy = xstrdup(remote->http_proxy);
if (remote)
var_override(&http_proxy_authmethod, remote->http_proxy_authmethod);
pragma_header = curl_slist_append(http_copy_default_headers(),
"Pragma: no-cache");
no_pragma_header = curl_slist_append(http_copy_default_headers(),
"Pragma:");
#ifdef USE_CURL_MULTI
{
char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS");
if (http_max_requests != NULL)
max_requests = atoi(http_max_requests);
}
curlm = curl_multi_init();
if (!curlm)
die("curl_multi_init failed");
#endif
if (getenv("GIT_SSL_NO_VERIFY"))
curl_ssl_verify = 0;
set_from_env(&ssl_cert, "GIT_SSL_CERT");
#if LIBCURL_VERSION_NUM >= 0x070903
set_from_env(&ssl_key, "GIT_SSL_KEY");
#endif
#if LIBCURL_VERSION_NUM >= 0x070908
set_from_env(&ssl_capath, "GIT_SSL_CAPATH");
#endif
set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO");
set_from_env(&user_agent, "GIT_HTTP_USER_AGENT");
low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT");
if (low_speed_limit != NULL)
curl_low_speed_limit = strtol(low_speed_limit, NULL, 10);
low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME");
if (low_speed_time != NULL)
curl_low_speed_time = strtol(low_speed_time, NULL, 10);
if (curl_ssl_verify == -1)
curl_ssl_verify = 1;
curl_session_count = 0;
#ifdef USE_CURL_MULTI
if (max_requests < 1)
max_requests = DEFAULT_MAX_REQUESTS;
#endif
if (getenv("GIT_CURL_FTP_NO_EPSV"))
curl_ftp_no_epsv = 1;
if (url) {
credential_from_url(&http_auth, url);
if (!ssl_cert_password_required &&
getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
starts_with(url, "https://"))
ssl_cert_password_required = 1;
}
#ifndef NO_CURL_EASY_DUPHANDLE
curl_default = get_curl_handle();
#endif
}
void http_cleanup(void)
{
struct active_request_slot *slot = active_queue_head;
while (slot != NULL) {
struct active_request_slot *next = slot->next;
if (slot->curl != NULL) {
xmulti_remove_handle(slot);
curl_easy_cleanup(slot->curl);
}
free(slot);
slot = next;
}
active_queue_head = NULL;
#ifndef NO_CURL_EASY_DUPHANDLE
curl_easy_cleanup(curl_default);
#endif
#ifdef USE_CURL_MULTI
curl_multi_cleanup(curlm);
#endif
curl_global_cleanup();
curl_slist_free_all(extra_http_headers);
extra_http_headers = NULL;
curl_slist_free_all(pragma_header);
pragma_header = NULL;
curl_slist_free_all(no_pragma_header);
no_pragma_header = NULL;
if (curl_http_proxy) {
free((void *)curl_http_proxy);
curl_http_proxy = NULL;
}
if (proxy_auth.password) {
memset(proxy_auth.password, 0, strlen(proxy_auth.password));
FREE_AND_NULL(proxy_auth.password);
}
free((void *)curl_proxyuserpwd);
curl_proxyuserpwd = NULL;
free((void *)http_proxy_authmethod);
http_proxy_authmethod = NULL;
if (cert_auth.password != NULL) {
memset(cert_auth.password, 0, strlen(cert_auth.password));
FREE_AND_NULL(cert_auth.password);
}
ssl_cert_password_required = 0;
FREE_AND_NULL(cached_accept_language);
}
struct active_request_slot *get_active_slot(void)
{
struct active_request_slot *slot = active_queue_head;
struct active_request_slot *newslot;
#ifdef USE_CURL_MULTI
int num_transfers;
/* Wait for a slot to open up if the queue is full */
while (active_requests >= max_requests) {
curl_multi_perform(curlm, &num_transfers);
if (num_transfers < active_requests)
process_curl_messages();
}
#endif
while (slot != NULL && slot->in_use)
slot = slot->next;
if (slot == NULL) {
newslot = xmalloc(sizeof(*newslot));
newslot->curl = NULL;
newslot->in_use = 0;
newslot->next = NULL;
slot = active_queue_head;
if (slot == NULL) {
active_queue_head = newslot;
} else {
while (slot->next != NULL)
slot = slot->next;
slot->next = newslot;
}
slot = newslot;
}
if (slot->curl == NULL) {
#ifdef NO_CURL_EASY_DUPHANDLE
slot->curl = get_curl_handle();
#else
slot->curl = curl_easy_duphandle(curl_default);
#endif
curl_session_count++;
}
active_requests++;
slot->in_use = 1;
slot->results = NULL;
slot->finished = NULL;
slot->callback_data = NULL;
slot->callback_func = NULL;
curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file);
if (curl_save_cookies)
curl_easy_setopt(slot->curl, CURLOPT_COOKIEJAR, curl_cookie_file);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header);
curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr);
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL);
curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL);
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL);
curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0);
curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 1);
curl_easy_setopt(slot->curl, CURLOPT_RANGE, NULL);
/*
* Default following to off unless "ALWAYS" is configured; this gives
* callers a sane starting point, and they can tweak for individual
* HTTP_FOLLOW_* cases themselves.
*/
if (http_follow_config == HTTP_FOLLOW_ALWAYS)
curl_easy_setopt(slot->curl, CURLOPT_FOLLOWLOCATION, 1);
else
curl_easy_setopt(slot->curl, CURLOPT_FOLLOWLOCATION, 0);
#if LIBCURL_VERSION_NUM >= 0x070a08
curl_easy_setopt(slot->curl, CURLOPT_IPRESOLVE, git_curl_ipresolve);
#endif
#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
curl_easy_setopt(slot->curl, CURLOPT_HTTPAUTH, http_auth_methods);
#endif
if (http_auth.password || curl_empty_auth_enabled())
init_curl_http_auth(slot->curl);
return slot;
}
int start_active_slot(struct active_request_slot *slot)
{
#ifdef USE_CURL_MULTI
CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl);
int num_transfers;
if (curlm_result != CURLM_OK &&
curlm_result != CURLM_CALL_MULTI_PERFORM) {
warning("curl_multi_add_handle failed: %s",
curl_multi_strerror(curlm_result));
active_requests--;
slot->in_use = 0;
return 0;
}
/*
* We know there must be something to do, since we just added
* something.
*/
curl_multi_perform(curlm, &num_transfers);
#endif
return 1;
}
#ifdef USE_CURL_MULTI
struct fill_chain {
void *data;
int (*fill)(void *);
struct fill_chain *next;
};
static struct fill_chain *fill_cfg;
void add_fill_function(void *data, int (*fill)(void *))
{
struct fill_chain *new_fill = xmalloc(sizeof(*new_fill));
struct fill_chain **linkp = &fill_cfg;
new_fill->data = data;
new_fill->fill = fill;
new_fill->next = NULL;
while (*linkp)
linkp = &(*linkp)->next;
*linkp = new_fill;
}
void fill_active_slots(void)
{
struct active_request_slot *slot = active_queue_head;
while (active_requests < max_requests) {
struct fill_chain *fill;
for (fill = fill_cfg; fill; fill = fill->next)
if (fill->fill(fill->data))
break;
if (!fill)
break;
}
while (slot != NULL) {
if (!slot->in_use && slot->curl != NULL
&& curl_session_count > min_curl_sessions) {
curl_easy_cleanup(slot->curl);
slot->curl = NULL;
curl_session_count--;
}
slot = slot->next;
}
}
void step_active_slots(void)
{
int num_transfers;
CURLMcode curlm_result;
do {
curlm_result = curl_multi_perform(curlm, &num_transfers);
} while (curlm_result == CURLM_CALL_MULTI_PERFORM);
if (num_transfers < active_requests) {
process_curl_messages();
fill_active_slots();
}
}
#endif
void run_active_slot(struct active_request_slot *slot)
{
#ifdef USE_CURL_MULTI
fd_set readfds;
fd_set writefds;
fd_set excfds;
int max_fd;
struct timeval select_timeout;
int finished = 0;
slot->finished = &finished;
while (!finished) {
step_active_slots();
if (slot->in_use) {
#if LIBCURL_VERSION_NUM >= 0x070f04
long curl_timeout;
curl_multi_timeout(curlm, &curl_timeout);
if (curl_timeout == 0) {
continue;
} else if (curl_timeout == -1) {
select_timeout.tv_sec = 0;
select_timeout.tv_usec = 50000;
} else {
select_timeout.tv_sec = curl_timeout / 1000;
select_timeout.tv_usec = (curl_timeout % 1000) * 1000;
}
#else
select_timeout.tv_sec = 0;
select_timeout.tv_usec = 50000;
#endif
max_fd = -1;
FD_ZERO(&readfds);
FD_ZERO(&writefds);
FD_ZERO(&excfds);
curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd);
/*
* It can happen that curl_multi_timeout returns a pathologically
* long timeout when curl_multi_fdset returns no file descriptors
* to read. See commit message for more details.
*/
if (max_fd < 0 &&
(select_timeout.tv_sec > 0 ||
select_timeout.tv_usec > 50000)) {
select_timeout.tv_sec = 0;
select_timeout.tv_usec = 50000;
}
select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout);
}
}
#else
while (slot->in_use) {
slot->curl_result = curl_easy_perform(slot->curl);
finish_active_slot(slot);
}
#endif
}
static void release_active_slot(struct active_request_slot *slot)
{
closedown_active_slot(slot);
if (slot->curl) {
xmulti_remove_handle(slot);
if (curl_session_count > min_curl_sessions) {
curl_easy_cleanup(slot->curl);
slot->curl = NULL;
curl_session_count--;
}
}
#ifdef USE_CURL_MULTI
fill_active_slots();
#endif
}
void finish_all_active_slots(void)
{
struct active_request_slot *slot = active_queue_head;
while (slot != NULL)
if (slot->in_use) {
run_active_slot(slot);
slot = active_queue_head;
} else {
slot = slot->next;
}
}
/* Helpers for modifying and creating URLs */
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 char *quote_ref_url(const char *base, const char *ref)
{
struct strbuf buf = STRBUF_INIT;
const char *cp;
int ch;
end_url_with_slash(&buf, base);
for (cp = ref; (ch = *cp) != 0; cp++)
if (needs_quote(ch))
strbuf_addf(&buf, "%%%02x", ch);
else
strbuf_addch(&buf, *cp);
return strbuf_detach(&buf, NULL);
}
void append_remote_object_url(struct strbuf *buf, const char *url,
const char *hex,
int only_two_digit_prefix)
{
end_url_with_slash(buf, url);
strbuf_addf(buf, "objects/%.*s/", 2, hex);
if (!only_two_digit_prefix)
strbuf_addstr(buf, hex + 2);
}
char *get_remote_object_url(const char *url, const char *hex,
int only_two_digit_prefix)
{
struct strbuf buf = STRBUF_INIT;
append_remote_object_url(&buf, url, hex, only_two_digit_prefix);
return strbuf_detach(&buf, NULL);
}
static int handle_curl_result(struct slot_results *results)
{
/*
* If we see a failing http code with CURLE_OK, we have turned off
* FAILONERROR (to keep the server's custom error response), and should
* translate the code into failure here.
*
* Likewise, if we see a redirect (30x code), that means we turned off
* redirect-following, and we should treat the result as an error.
*/
if (results->curl_result == CURLE_OK &&
results->http_code >= 300) {
results->curl_result = CURLE_HTTP_RETURNED_ERROR;
/*
* Normally curl will already have put the "reason phrase"
* from the server into curl_errorstr; unfortunately without
* FAILONERROR it is lost, so we can give only the numeric
* status code.
*/
xsnprintf(curl_errorstr, sizeof(curl_errorstr),
"The requested URL returned error: %ld",
results->http_code);
}
if (results->curl_result == CURLE_OK) {
credential_approve(&http_auth);
if (proxy_auth.password)
credential_approve(&proxy_auth);
return HTTP_OK;
} else if (missing_target(results))
return HTTP_MISSING_TARGET;
else if (results->http_code == 401) {
if (http_auth.username && http_auth.password) {
credential_reject(&http_auth);
return HTTP_NOAUTH;
} else {
#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
http_auth_methods &= ~CURLAUTH_GSSNEGOTIATE;
if (results->auth_avail) {
http_auth_methods &= results->auth_avail;
http_auth_methods_restricted = 1;
}
#endif
return HTTP_REAUTH;
}
} else {
if (results->http_connectcode == 407)
credential_reject(&proxy_auth);
#if LIBCURL_VERSION_NUM >= 0x070c00
if (!curl_errorstr[0])
strlcpy(curl_errorstr,
curl_easy_strerror(results->curl_result),
sizeof(curl_errorstr));
#endif
return HTTP_ERROR;
}
}
int run_one_slot(struct active_request_slot *slot,
struct slot_results *results)
{
slot->results = results;
if (!start_active_slot(slot)) {
xsnprintf(curl_errorstr, sizeof(curl_errorstr),
"failed to start HTTP request");
return HTTP_START_FAILED;
}
run_active_slot(slot);
return handle_curl_result(results);
}
struct curl_slist *http_copy_default_headers(void)
{
struct curl_slist *headers = NULL, *h;
for (h = extra_http_headers; h; h = h->next)
headers = curl_slist_append(headers, h->data);
return headers;
}
static CURLcode curlinfo_strbuf(CURL *curl, CURLINFO info, struct strbuf *buf)
{
char *ptr;
CURLcode ret;
strbuf_reset(buf);
ret = curl_easy_getinfo(curl, info, &ptr);
if (!ret && ptr)
strbuf_addstr(buf, ptr);
return ret;
}
/*
* Check for and extract a content-type parameter. "raw"
* should be positioned at the start of the potential
* parameter, with any whitespace already removed.
*
* "name" is the name of the parameter. The value is appended
* to "out".
*/
static int extract_param(const char *raw, const char *name,
struct strbuf *out)
{
size_t len = strlen(name);
if (strncasecmp(raw, name, len))
return -1;
raw += len;
if (*raw != '=')
return -1;
raw++;
while (*raw && !isspace(*raw) && *raw != ';')
strbuf_addch(out, *raw++);
return 0;
}
/*
* Extract a normalized version of the content type, with any
* spaces suppressed, all letters lowercased, and no trailing ";"
* or parameters.
*
* Note that we will silently remove even invalid whitespace. For
* example, "text / plain" is specifically forbidden by RFC 2616,
* but "text/plain" is the only reasonable output, and this keeps
* our code simple.
*
* If the "charset" argument is not NULL, store the value of any
* charset parameter there.
*
* Example:
* "TEXT/PLAIN; charset=utf-8" -> "text/plain", "utf-8"
* "text / plain" -> "text/plain"
*/
static void extract_content_type(struct strbuf *raw, struct strbuf *type,
struct strbuf *charset)
{
const char *p;
strbuf_reset(type);
strbuf_grow(type, raw->len);
for (p = raw->buf; *p; p++) {
if (isspace(*p))
continue;
if (*p == ';') {
p++;
break;
}
strbuf_addch(type, tolower(*p));
}
if (!charset)
return;
strbuf_reset(charset);
while (*p) {
while (isspace(*p) || *p == ';')
p++;
if (!extract_param(p, "charset", charset))
return;
while (*p && !isspace(*p))
p++;
}
if (!charset->len && starts_with(type->buf, "text/"))
strbuf_addstr(charset, "ISO-8859-1");
}
static void write_accept_language(struct strbuf *buf)
{
/*
* MAX_DECIMAL_PLACES must not be larger than 3. If it is larger than
* that, q-value will be smaller than 0.001, the minimum q-value the
* HTTP specification allows. See
* http://tools.ietf.org/html/rfc7231#section-5.3.1 for q-value.
*/
const int MAX_DECIMAL_PLACES = 3;
const int MAX_LANGUAGE_TAGS = 1000;
const int MAX_ACCEPT_LANGUAGE_HEADER_SIZE = 4000;
char **language_tags = NULL;
int num_langs = 0;
const char *s = get_preferred_languages();
int i;
struct strbuf tag = STRBUF_INIT;
/* Don't add Accept-Language header if no language is preferred. */
if (!s)
return;
/*
* Split the colon-separated string of preferred languages into
* language_tags array.
*/
do {
/* collect language tag */
for (; *s && (isalnum(*s) || *s == '_'); s++)
strbuf_addch(&tag, *s == '_' ? '-' : *s);
/* skip .codeset, @modifier and any other unnecessary parts */
while (*s && *s != ':')
s++;
if (tag.len) {
num_langs++;
REALLOC_ARRAY(language_tags, num_langs);
language_tags[num_langs - 1] = strbuf_detach(&tag, NULL);
if (num_langs >= MAX_LANGUAGE_TAGS - 1) /* -1 for '*' */
break;
}
} while (*s++);
/* write Accept-Language header into buf */
if (num_langs) {
int last_buf_len = 0;
int max_q;
int decimal_places;
char q_format[32];
/* add '*' */
REALLOC_ARRAY(language_tags, num_langs + 1);
language_tags[num_langs++] = "*"; /* it's OK; this won't be freed */
/* compute decimal_places */
for (max_q = 1, decimal_places = 0;
max_q < num_langs && decimal_places <= MAX_DECIMAL_PLACES;
decimal_places++, max_q *= 10)
;
xsnprintf(q_format, sizeof(q_format), ";q=0.%%0%dd", decimal_places);
strbuf_addstr(buf, "Accept-Language: ");
for (i = 0; i < num_langs; i++) {
if (i > 0)
strbuf_addstr(buf, ", ");
strbuf_addstr(buf, language_tags[i]);
if (i > 0)
strbuf_addf(buf, q_format, max_q - i);
if (buf->len > MAX_ACCEPT_LANGUAGE_HEADER_SIZE) {
strbuf_remove(buf, last_buf_len, buf->len - last_buf_len);
break;
}
last_buf_len = buf->len;
}
}
/* free language tags -- last one is a static '*' */
for (i = 0; i < num_langs - 1; i++)
free(language_tags[i]);
free(language_tags);
}
/*
* Get an Accept-Language header which indicates user's preferred languages.
*
* Examples:
* LANGUAGE= -> ""
* LANGUAGE=ko:en -> "Accept-Language: ko, en; q=0.9, *; q=0.1"
* LANGUAGE=ko_KR.UTF-8:sr@latin -> "Accept-Language: ko-KR, sr; q=0.9, *; q=0.1"
* LANGUAGE=ko LANG=en_US.UTF-8 -> "Accept-Language: ko, *; q=0.1"
* LANGUAGE= LANG=en_US.UTF-8 -> "Accept-Language: en-US, *; q=0.1"
* LANGUAGE= LANG=C -> ""
*/
static const char *get_accept_language(void)
{
if (!cached_accept_language) {
struct strbuf buf = STRBUF_INIT;
write_accept_language(&buf);
if (buf.len > 0)
cached_accept_language = strbuf_detach(&buf, NULL);
}
return cached_accept_language;
}
static void http_opt_request_remainder(CURL *curl, off_t pos)
{
char buf[128];
xsnprintf(buf, sizeof(buf), "%"PRIuMAX"-", (uintmax_t)pos);
curl_easy_setopt(curl, CURLOPT_RANGE, buf);
}
/* http_request() targets */
#define HTTP_REQUEST_STRBUF 0
#define HTTP_REQUEST_FILE 1
static int http_request(const char *url,
void *result, int target,
const struct http_get_options *options)
{
struct active_request_slot *slot;
struct slot_results results;
struct curl_slist *headers = http_copy_default_headers();
struct strbuf buf = STRBUF_INIT;
const char *accept_language;
int ret;
slot = get_active_slot();
curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
if (result == NULL) {
curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
} else {
curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
if (target == HTTP_REQUEST_FILE) {
off_t posn = ftello(result);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
fwrite);
if (posn > 0)
http_opt_request_remainder(slot->curl, posn);
} else
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
fwrite_buffer);
}
accept_language = get_accept_language();
if (accept_language)
headers = curl_slist_append(headers, accept_language);
strbuf_addstr(&buf, "Pragma:");
if (options && options->no_cache)
strbuf_addstr(&buf, " no-cache");
if (options && options->keep_error)
curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0);
if (options && options->initial_request &&
http_follow_config == HTTP_FOLLOW_INITIAL)
curl_easy_setopt(slot->curl, CURLOPT_FOLLOWLOCATION, 1);
headers = curl_slist_append(headers, buf.buf);
/* Add additional headers here */
if (options && options->extra_headers) {
const struct string_list_item *item;
for_each_string_list_item(item, options->extra_headers) {
headers = curl_slist_append(headers, item->string);
}
}
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "");
ret = run_one_slot(slot, &results);
if (options && options->content_type) {
struct strbuf raw = STRBUF_INIT;
curlinfo_strbuf(slot->curl, CURLINFO_CONTENT_TYPE, &raw);
extract_content_type(&raw, options->content_type,
options->charset);
strbuf_release(&raw);
}
if (options && options->effective_url)
curlinfo_strbuf(slot->curl, CURLINFO_EFFECTIVE_URL,
options->effective_url);
curl_slist_free_all(headers);
strbuf_release(&buf);
return ret;
}
/*
* Update the "base" url to a more appropriate value, as deduced by
* redirects seen when requesting a URL starting with "url".
*
* The "asked" parameter is a URL that we asked curl to access, and must begin
* with "base".
*
* The "got" parameter is the URL that curl reported to us as where we ended
* up.
*
* Returns 1 if we updated the base url, 0 otherwise.
*
* Our basic strategy is to compare "base" and "asked" to find the bits
* specific to our request. We then strip those bits off of "got" to yield the
* new base. So for example, if our base is "http://example.com/foo.git",
* and we ask for "http://example.com/foo.git/info/refs", we might end up
* with "https://other.example.com/foo.git/info/refs". We would want the
* new URL to become "https://other.example.com/foo.git".
*
* Note that this assumes a sane redirect scheme. It's entirely possible
* in the example above to end up at a URL that does not even end in
* "info/refs". In such a case we die. There's not much we can do, such a
* scheme is unlikely to represent a real git repository, and failing to
* rewrite the base opens options for malicious redirects to do funny things.
*/
static int update_url_from_redirect(struct strbuf *base,
const char *asked,
const struct strbuf *got)
{
const char *tail;
size_t new_len;
if (!strcmp(asked, got->buf))
return 0;
if (!skip_prefix(asked, base->buf, &tail))
BUG("update_url_from_redirect: %s is not a superset of %s",
asked, base->buf);
new_len = got->len;
if (!strip_suffix_mem(got->buf, &new_len, tail))
die(_("unable to update url base from redirection:\n"
" asked for: %s\n"
" redirect: %s"),
asked, got->buf);
strbuf_reset(base);
strbuf_add(base, got->buf, new_len);
return 1;
}
static int http_request_reauth(const char *url,
void *result, int target,
struct http_get_options *options)
{
int ret = http_request(url, result, target, options);
if (ret != HTTP_OK && ret != HTTP_REAUTH)
return ret;
if (options && options->effective_url && options->base_url) {
if (update_url_from_redirect(options->base_url,
url, options->effective_url)) {
credential_from_url(&http_auth, options->base_url->buf);
url = options->effective_url->buf;
}
}
if (ret != HTTP_REAUTH)
return ret;
/*
* If we are using KEEP_ERROR, the previous request may have
* put cruft into our output stream; we should clear it out before
* making our next request. We only know how to do this for
* the strbuf case, but that is enough to satisfy current callers.
*/
if (options && options->keep_error) {
switch (target) {
case HTTP_REQUEST_STRBUF:
strbuf_reset(result);
break;
default:
BUG("HTTP_KEEP_ERROR is only supported with strbufs");
}
}
credential_fill(&http_auth);
return http_request(url, result, target, options);
}
int http_get_strbuf(const char *url,
struct strbuf *result,
struct http_get_options *options)
{
return http_request_reauth(url, result, HTTP_REQUEST_STRBUF, options);
}
/*
* Downloads a URL and stores the result in the given file.
*
* If a previous interrupted download is detected (i.e. a previous temporary
* file is still around) the download is resumed.
*/
static int http_get_file(const char *url, const char *filename,
struct http_get_options *options)
{
int ret;
struct strbuf tmpfile = STRBUF_INIT;
FILE *result;
strbuf_addf(&tmpfile, "%s.temp", filename);
result = fopen(tmpfile.buf, "a");
if (!result) {
error("Unable to open local file %s", tmpfile.buf);
ret = HTTP_ERROR;
goto cleanup;
}
ret = http_request_reauth(url, result, HTTP_REQUEST_FILE, options);
fclose(result);
if (ret == HTTP_OK && finalize_object_file(tmpfile.buf, filename))
ret = HTTP_ERROR;
cleanup:
strbuf_release(&tmpfile);
return ret;
}
int http_fetch_ref(const char *base, struct ref *ref)
{
struct http_get_options options = {0};
char *url;
struct strbuf buffer = STRBUF_INIT;
int ret = -1;
options.no_cache = 1;
url = quote_ref_url(base, ref->name);
if (http_get_strbuf(url, &buffer, &options) == HTTP_OK) {
strbuf_rtrim(&buffer);
if (buffer.len == 40)
ret = get_oid_hex(buffer.buf, &ref->old_oid);
else if (starts_with(buffer.buf, "ref: ")) {
ref->symref = xstrdup(buffer.buf + 5);
ret = 0;
}
}
strbuf_release(&buffer);
free(url);
return ret;
}
/* Helpers for fetching packs */
static char *fetch_pack_index(unsigned char *sha1, const char *base_url)
{
char *url, *tmp;
struct strbuf buf = STRBUF_INIT;
if (http_is_verbose)
fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1));
end_url_with_slash(&buf, base_url);
strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1));
url = strbuf_detach(&buf, NULL);
strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1));
tmp = strbuf_detach(&buf, NULL);
if (http_get_file(url, tmp, NULL) != HTTP_OK) {
error("Unable to get pack index %s", url);
FREE_AND_NULL(tmp);
}
free(url);
return tmp;
}
static int fetch_and_setup_pack_index(struct packed_git **packs_head,
unsigned char *sha1, const char *base_url)
{
struct packed_git *new_pack;
char *tmp_idx = NULL;
int ret;
if (has_pack_index(sha1)) {
new_pack = parse_pack_index(sha1, sha1_pack_index_name(sha1));
if (!new_pack)
return -1; /* parse_pack_index() already issued error message */
goto add_pack;
}
tmp_idx = fetch_pack_index(sha1, base_url);
if (!tmp_idx)
return -1;
new_pack = parse_pack_index(sha1, tmp_idx);
if (!new_pack) {
unlink(tmp_idx);
free(tmp_idx);
return -1; /* parse_pack_index() already issued error message */
}
ret = verify_pack_index(new_pack);
if (!ret) {
close_pack_index(new_pack);
ret = finalize_object_file(tmp_idx, sha1_pack_index_name(sha1));
}
free(tmp_idx);
if (ret)
return -1;
add_pack:
new_pack->next = *packs_head;
*packs_head = new_pack;
return 0;
}
int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
{
struct http_get_options options = {0};
int ret = 0, i = 0;
char *url, *data;
struct strbuf buf = STRBUF_INIT;
unsigned char hash[GIT_MAX_RAWSZ];
const unsigned hexsz = the_hash_algo->hexsz;
end_url_with_slash(&buf, base_url);
strbuf_addstr(&buf, "objects/info/packs");
url = strbuf_detach(&buf, NULL);
options.no_cache = 1;
ret = http_get_strbuf(url, &buf, &options);
if (ret != HTTP_OK)
goto cleanup;
data = buf.buf;
while (i < buf.len) {
switch (data[i]) {
case 'P':
i++;
if (i + hexsz + 12 <= buf.len &&
starts_with(data + i, " pack-") &&
starts_with(data + i + hexsz + 6, ".pack\n")) {
get_sha1_hex(data + i + 6, hash);
fetch_and_setup_pack_index(packs_head, hash,
base_url);
i += hexsz + 11;
break;
}
default:
while (i < buf.len && data[i] != '\n')
i++;
}
i++;
}
cleanup:
free(url);
return ret;
}
void release_http_pack_request(struct http_pack_request *preq)
{
if (preq->packfile != NULL) {
fclose(preq->packfile);
preq->packfile = NULL;
}
preq->slot = NULL;
strbuf_release(&preq->tmpfile);
free(preq->url);
free(preq);
}
int finish_http_pack_request(struct http_pack_request *preq)
{
struct packed_git **lst;
struct packed_git *p = preq->target;
char *tmp_idx;
size_t len;
struct child_process ip = CHILD_PROCESS_INIT;
close_pack_index(p);
fclose(preq->packfile);
preq->packfile = NULL;
lst = preq->lst;
while (*lst != p)
lst = &((*lst)->next);
*lst = (*lst)->next;
if (!strip_suffix(preq->tmpfile.buf, ".pack.temp", &len))
BUG("pack tmpfile does not end in .pack.temp?");
tmp_idx = xstrfmt("%.*s.idx.temp", (int)len, preq->tmpfile.buf);
argv_array_push(&ip.args, "index-pack");
argv_array_pushl(&ip.args, "-o", tmp_idx, NULL);
argv_array_push(&ip.args, preq->tmpfile.buf);
ip.git_cmd = 1;
ip.no_stdin = 1;
ip.no_stdout = 1;
if (run_command(&ip)) {
unlink(preq->tmpfile.buf);
unlink(tmp_idx);
free(tmp_idx);
return -1;
}
unlink(sha1_pack_index_name(p->sha1));
if (finalize_object_file(preq->tmpfile.buf, sha1_pack_name(p->sha1))
|| finalize_object_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
free(tmp_idx);
return -1;
}
install_packed_git(the_repository, p);
free(tmp_idx);
return 0;
}
struct http_pack_request *new_http_pack_request(
struct packed_git *target, const char *base_url)
{
off_t prev_posn = 0;
struct strbuf buf = STRBUF_INIT;
struct http_pack_request *preq;
preq = xcalloc(1, sizeof(*preq));
strbuf_init(&preq->tmpfile, 0);
preq->target = target;
end_url_with_slash(&buf, base_url);
strbuf_addf(&buf, "objects/pack/pack-%s.pack",
sha1_to_hex(target->sha1));
preq->url = strbuf_detach(&buf, NULL);
strbuf_addf(&preq->tmpfile, "%s.temp", sha1_pack_name(target->sha1));
preq->packfile = fopen(preq->tmpfile.buf, "a");
if (!preq->packfile) {
error("Unable to open local file %s for pack",
preq->tmpfile.buf);
goto abort;
}
preq->slot = get_active_slot();
curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url);
curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
no_pragma_header);
/*
* If there is data present from a previous transfer attempt,
* resume where it left off
*/
prev_posn = ftello(preq->packfile);
if (prev_posn>0) {
if (http_is_verbose)
fprintf(stderr,
"Resuming fetch of pack %s at byte %"PRIuMAX"\n",
sha1_to_hex(target->sha1), (uintmax_t)prev_posn);
http_opt_request_remainder(preq->slot->curl, prev_posn);
}
return preq;
abort:
strbuf_release(&preq->tmpfile);
free(preq->url);
free(preq);
return NULL;
}
/* Helpers for fetching objects (loose) */
static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb,
void *data)
{
unsigned char expn[4096];
size_t size = eltsize * nmemb;
int posn = 0;
struct http_object_request *freq = data;
struct active_request_slot *slot = freq->slot;
if (slot) {
CURLcode c = curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE,
&slot->http_code);
if (c != CURLE_OK)
BUG("curl_easy_getinfo for HTTP code failed: %s",
curl_easy_strerror(c));
if (slot->http_code >= 300)
return size;
}
do {
ssize_t retval = xwrite(freq->localfile,
(char *) ptr + posn, size - posn);
if (retval < 0)
return posn;
posn += retval;
} while (posn < size);
freq->stream.avail_in = size;
freq->stream.next_in = (void *)ptr;
do {
freq->stream.next_out = expn;
freq->stream.avail_out = sizeof(expn);
freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH);
git_SHA1_Update(&freq->c, expn,
sizeof(expn) - freq->stream.avail_out);
} while (freq->stream.avail_in && freq->zret == Z_OK);
return size;
}
struct http_object_request *new_http_object_request(const char *base_url,
unsigned char *sha1)
{
char *hex = sha1_to_hex(sha1);
struct strbuf filename = STRBUF_INIT;
struct strbuf prevfile = STRBUF_INIT;
int prevlocal;
char prev_buf[PREV_BUF_SIZE];
ssize_t prev_read = 0;
off_t prev_posn = 0;
struct http_object_request *freq;
freq = xcalloc(1, sizeof(*freq));
strbuf_init(&freq->tmpfile, 0);
hashcpy(freq->sha1, sha1);
freq->localfile = -1;
sha1_file_name(the_repository, &filename, sha1);
strbuf_addf(&freq->tmpfile, "%s.temp", filename.buf);
strbuf_addf(&prevfile, "%s.prev", filename.buf);
unlink_or_warn(prevfile.buf);
rename(freq->tmpfile.buf, prevfile.buf);
unlink_or_warn(freq->tmpfile.buf);
strbuf_release(&filename);
if (freq->localfile != -1)
error("fd leakage in start: %d", freq->localfile);
freq->localfile = open(freq->tmpfile.buf,
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 (freq->localfile < 0 && errno == ENOENT) {
char *dir = strrchr(freq->tmpfile.buf, '/');
if (dir) {
*dir = 0;
mkdir(freq->tmpfile.buf, 0777);
*dir = '/';
}
freq->localfile = open(freq->tmpfile.buf,
O_WRONLY | O_CREAT | O_EXCL, 0666);
}
if (freq->localfile < 0) {
error_errno("Couldn't create temporary file %s",
freq->tmpfile.buf);
goto abort;
}
git_inflate_init(&freq->stream);
git_SHA1_Init(&freq->c);
freq->url = get_remote_object_url(base_url, hex, 0);
/*
* If a previous temp file is present, process what was already
* fetched.
*/
prevlocal = open(prevfile.buf, 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,
freq) == prev_read) {
prev_posn += prev_read;
} else {
prev_read = -1;
}
}
} while (prev_read > 0);
close(prevlocal);
}
unlink_or_warn(prevfile.buf);
strbuf_release(&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(&freq->stream, 0, sizeof(freq->stream));
git_inflate_init(&freq->stream);
git_SHA1_Init(&freq->c);
if (prev_posn>0) {
prev_posn = 0;
lseek(freq->localfile, 0, SEEK_SET);
if (ftruncate(freq->localfile, 0) < 0) {
error_errno("Couldn't truncate temporary file %s",
freq->tmpfile.buf);
goto abort;
}
}
}
freq->slot = get_active_slot();
curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
curl_easy_setopt(freq->slot->curl, CURLOPT_FAILONERROR, 0);
curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url);
curl_easy_setopt(freq->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 (http_is_verbose)
fprintf(stderr,
"Resuming fetch of object %s at byte %"PRIuMAX"\n",
hex, (uintmax_t)prev_posn);
http_opt_request_remainder(freq->slot->curl, prev_posn);
}
return freq;
abort:
strbuf_release(&prevfile);
free(freq->url);
free(freq);
return NULL;
}
void process_http_object_request(struct http_object_request *freq)
{
if (freq->slot == NULL)
return;
freq->curl_result = freq->slot->curl_result;
freq->http_code = freq->slot->http_code;
freq->slot = NULL;
}
int finish_http_object_request(struct http_object_request *freq)
{
struct stat st;
struct strbuf filename = STRBUF_INIT;
close(freq->localfile);
freq->localfile = -1;
process_http_object_request(freq);
if (freq->http_code == 416) {
warning("requested range invalid; we may already have all the data.");
} else if (freq->curl_result != CURLE_OK) {
if (stat(freq->tmpfile.buf, &st) == 0)
if (st.st_size == 0)
unlink_or_warn(freq->tmpfile.buf);
return -1;
}
git_inflate_end(&freq->stream);
git_SHA1_Final(freq->real_sha1, &freq->c);
if (freq->zret != Z_STREAM_END) {
unlink_or_warn(freq->tmpfile.buf);
return -1;
}
if (hashcmp(freq->sha1, freq->real_sha1)) {
unlink_or_warn(freq->tmpfile.buf);
return -1;
}
sha1_file_name(the_repository, &filename, freq->sha1);
freq->rename = finalize_object_file(freq->tmpfile.buf, filename.buf);
strbuf_release(&filename);
return freq->rename;
}
void abort_http_object_request(struct http_object_request *freq)
{
unlink_or_warn(freq->tmpfile.buf);
release_http_object_request(freq);
}
void release_http_object_request(struct http_object_request *freq)
{
if (freq->localfile != -1) {
close(freq->localfile);
freq->localfile = -1;
}
if (freq->url != NULL) {
FREE_AND_NULL(freq->url);
}
if (freq->slot != NULL) {
freq->slot->callback_func = NULL;
freq->slot->callback_data = NULL;
release_active_slot(freq->slot);
freq->slot = NULL;
}
strbuf_release(&freq->tmpfile);
}
|