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1c4b6604 | 1 | #include "git-compat-util.h" |
29508e1e | 2 | #include "http.h" |
b2141fc1 | 3 | #include "config.h" |
2264dfa5 | 4 | #include "pack.h" |
de1a2fdd | 5 | #include "sideband.h" |
fe72d420 | 6 | #include "run-command.h" |
f39f72d8 | 7 | #include "url.h" |
6a56993b | 8 | #include "urlmatch.h" |
148bb6a7 | 9 | #include "credential.h" |
745c7c8e | 10 | #include "version.h" |
047ec602 | 11 | #include "pkt-line.h" |
93f7d910 | 12 | #include "gettext.h" |
f4113cac | 13 | #include "transport.h" |
4f39cd82 | 14 | #include "packfile.h" |
19113a26 | 15 | #include "protocol.h" |
83411783 | 16 | #include "string-list.h" |
29508e1e | 17 | |
74c682d3 | 18 | static struct trace_key trace_curl = TRACE_KEY_INIT(CURL); |
8ba18e6f | 19 | static int trace_curl_data = 1; |
83411783 | 20 | static struct string_list cookies_to_redact = STRING_LIST_INIT_DUP; |
c915f11e EW |
21 | #if LIBCURL_VERSION_NUM >= 0x070a08 |
22 | long int git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER; | |
23 | #else | |
24 | long int git_curl_ipresolve; | |
25 | #endif | |
4251ccbd | 26 | int active_requests; |
e9176745 | 27 | int http_is_verbose; |
37ee680d | 28 | ssize_t http_post_buffer = 16 * LARGE_PACKET_MAX; |
29508e1e | 29 | |
b8ac9230 MS |
30 | #if LIBCURL_VERSION_NUM >= 0x070a06 |
31 | #define LIBCURL_CAN_HANDLE_AUTH_ANY | |
32 | #endif | |
33 | ||
ad75ebe5 TRC |
34 | static int min_curl_sessions = 1; |
35 | static int curl_session_count; | |
29508e1e | 36 | #ifdef USE_CURL_MULTI |
cc3530e8 MH |
37 | static int max_requests = -1; |
38 | static CURLM *curlm; | |
29508e1e NH |
39 | #endif |
40 | #ifndef NO_CURL_EASY_DUPHANDLE | |
cc3530e8 | 41 | static CURL *curl_default; |
29508e1e | 42 | #endif |
5424bc55 TRC |
43 | |
44 | #define PREV_BUF_SIZE 4096 | |
5424bc55 | 45 | |
29508e1e NH |
46 | char curl_errorstr[CURL_ERROR_SIZE]; |
47 | ||
cc3530e8 | 48 | static int curl_ssl_verify = -1; |
4bc444eb | 49 | static int curl_ssl_try; |
4251ccbd | 50 | static const char *ssl_cert; |
f6f2a9e4 | 51 | static const char *ssl_cipherlist; |
01861cb7 EP |
52 | static const char *ssl_version; |
53 | static struct { | |
54 | const char *name; | |
55 | long ssl_version; | |
56 | } sslversions[] = { | |
57 | { "sslv2", CURL_SSLVERSION_SSLv2 }, | |
58 | { "sslv3", CURL_SSLVERSION_SSLv3 }, | |
59 | { "tlsv1", CURL_SSLVERSION_TLSv1 }, | |
60 | #if LIBCURL_VERSION_NUM >= 0x072200 | |
61 | { "tlsv1.0", CURL_SSLVERSION_TLSv1_0 }, | |
62 | { "tlsv1.1", CURL_SSLVERSION_TLSv1_1 }, | |
63 | { "tlsv1.2", CURL_SSLVERSION_TLSv1_2 }, | |
64 | #endif | |
65 | }; | |
ef52aafa | 66 | #if LIBCURL_VERSION_NUM >= 0x070903 |
4251ccbd | 67 | static const char *ssl_key; |
29508e1e NH |
68 | #endif |
69 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
4251ccbd | 70 | static const char *ssl_capath; |
29508e1e | 71 | #endif |
aeff8a61 CE |
72 | #if LIBCURL_VERSION_NUM >= 0x072c00 |
73 | static const char *ssl_pinnedkey; | |
74 | #endif | |
4251ccbd | 75 | static const char *ssl_cainfo; |
cc3530e8 MH |
76 | static long curl_low_speed_limit = -1; |
77 | static long curl_low_speed_time = -1; | |
4251ccbd JH |
78 | static int curl_ftp_no_epsv; |
79 | static const char *curl_http_proxy; | |
d445fda4 | 80 | static const char *curl_no_proxy; |
ef976395 KF |
81 | static const char *http_proxy_authmethod; |
82 | static struct { | |
83 | const char *name; | |
84 | long curlauth_param; | |
85 | } proxy_authmethods[] = { | |
86 | { "basic", CURLAUTH_BASIC }, | |
87 | { "digest", CURLAUTH_DIGEST }, | |
88 | { "negotiate", CURLAUTH_GSSNEGOTIATE }, | |
89 | { "ntlm", CURLAUTH_NTLM }, | |
90 | #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY | |
91 | { "anyauth", CURLAUTH_ANY }, | |
92 | #endif | |
93 | /* | |
94 | * CURLAUTH_DIGEST_IE has no corresponding command-line option in | |
95 | * curl(1) and is not included in CURLAUTH_ANY, so we leave it out | |
96 | * here, too | |
97 | */ | |
98 | }; | |
dd5df538 | 99 | #ifdef CURLGSSAPI_DELEGATION_FLAG |
26a7b234 PS |
100 | static const char *curl_deleg; |
101 | static struct { | |
102 | const char *name; | |
103 | long curl_deleg_param; | |
104 | } curl_deleg_levels[] = { | |
105 | { "none", CURLGSSAPI_DELEGATION_NONE }, | |
106 | { "policy", CURLGSSAPI_DELEGATION_POLICY_FLAG }, | |
107 | { "always", CURLGSSAPI_DELEGATION_FLAG }, | |
108 | }; | |
109 | #endif | |
110 | ||
372370f1 KF |
111 | static struct credential proxy_auth = CREDENTIAL_INIT; |
112 | static const char *curl_proxyuserpwd; | |
bcfb95dd | 113 | static const char *curl_cookie_file; |
912b2acf | 114 | static int curl_save_cookies; |
2501aff8 | 115 | struct credential http_auth = CREDENTIAL_INIT; |
a4ddbc33 | 116 | static int http_proactive_auth; |
b1d1058c | 117 | static const char *user_agent; |
40a18fc7 | 118 | static int curl_empty_auth = -1; |
29508e1e | 119 | |
50d34137 JK |
120 | enum http_follow_config http_follow_config = HTTP_FOLLOW_INITIAL; |
121 | ||
30dd9163 ML |
122 | #if LIBCURL_VERSION_NUM >= 0x071700 |
123 | /* Use CURLOPT_KEYPASSWD as is */ | |
124 | #elif LIBCURL_VERSION_NUM >= 0x070903 | |
125 | #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD | |
126 | #else | |
127 | #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD | |
128 | #endif | |
129 | ||
148bb6a7 | 130 | static struct credential cert_auth = CREDENTIAL_INIT; |
30dd9163 | 131 | static int ssl_cert_password_required; |
4dbe6646 | 132 | #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY |
133 | static unsigned long http_auth_methods = CURLAUTH_ANY; | |
40a18fc7 JK |
134 | static int http_auth_methods_restricted; |
135 | /* Modes for which empty_auth cannot actually help us. */ | |
136 | static unsigned long empty_auth_useless = | |
137 | CURLAUTH_BASIC | |
138 | #ifdef CURLAUTH_DIGEST_IE | |
139 | | CURLAUTH_DIGEST_IE | |
140 | #endif | |
141 | | CURLAUTH_DIGEST; | |
4dbe6646 | 142 | #endif |
30dd9163 | 143 | |
cc3530e8 | 144 | static struct curl_slist *pragma_header; |
5424bc55 | 145 | static struct curl_slist *no_pragma_header; |
8cb01e2f | 146 | static struct curl_slist *extra_http_headers; |
e9176745 | 147 | |
4251ccbd | 148 | static struct active_request_slot *active_queue_head; |
29508e1e | 149 | |
f18604bb YE |
150 | static char *cached_accept_language; |
151 | ||
a04ff3ec | 152 | size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_) |
29508e1e NH |
153 | { |
154 | size_t size = eltsize * nmemb; | |
f444e528 JH |
155 | struct buffer *buffer = buffer_; |
156 | ||
028c2976 MH |
157 | if (size > buffer->buf.len - buffer->posn) |
158 | size = buffer->buf.len - buffer->posn; | |
159 | memcpy(ptr, buffer->buf.buf + buffer->posn, size); | |
29508e1e | 160 | buffer->posn += size; |
028c2976 | 161 | |
29508e1e NH |
162 | return size; |
163 | } | |
164 | ||
3944ba0c MS |
165 | #ifndef NO_CURL_IOCTL |
166 | curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp) | |
167 | { | |
168 | struct buffer *buffer = clientp; | |
169 | ||
170 | switch (cmd) { | |
171 | case CURLIOCMD_NOP: | |
172 | return CURLIOE_OK; | |
173 | ||
174 | case CURLIOCMD_RESTARTREAD: | |
175 | buffer->posn = 0; | |
176 | return CURLIOE_OK; | |
177 | ||
178 | default: | |
179 | return CURLIOE_UNKNOWNCMD; | |
180 | } | |
181 | } | |
182 | #endif | |
183 | ||
a04ff3ec | 184 | size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_) |
29508e1e NH |
185 | { |
186 | size_t size = eltsize * nmemb; | |
f444e528 JH |
187 | struct strbuf *buffer = buffer_; |
188 | ||
028c2976 | 189 | strbuf_add(buffer, ptr, size); |
29508e1e NH |
190 | return size; |
191 | } | |
192 | ||
a04ff3ec | 193 | size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf) |
29508e1e | 194 | { |
29508e1e NH |
195 | return eltsize * nmemb; |
196 | } | |
197 | ||
b90a3d7b JH |
198 | static void closedown_active_slot(struct active_request_slot *slot) |
199 | { | |
200 | active_requests--; | |
201 | slot->in_use = 0; | |
202 | } | |
203 | ||
204 | static void finish_active_slot(struct active_request_slot *slot) | |
205 | { | |
206 | closedown_active_slot(slot); | |
207 | curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code); | |
208 | ||
209 | if (slot->finished != NULL) | |
210 | (*slot->finished) = 1; | |
211 | ||
212 | /* Store slot results so they can be read after the slot is reused */ | |
213 | if (slot->results != NULL) { | |
214 | slot->results->curl_result = slot->curl_result; | |
215 | slot->results->http_code = slot->http_code; | |
216 | #if LIBCURL_VERSION_NUM >= 0x070a08 | |
217 | curl_easy_getinfo(slot->curl, CURLINFO_HTTPAUTH_AVAIL, | |
218 | &slot->results->auth_avail); | |
219 | #else | |
220 | slot->results->auth_avail = 0; | |
221 | #endif | |
372370f1 KF |
222 | |
223 | curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CONNECTCODE, | |
224 | &slot->results->http_connectcode); | |
b90a3d7b JH |
225 | } |
226 | ||
227 | /* Run callback if appropriate */ | |
228 | if (slot->callback_func != NULL) | |
229 | slot->callback_func(slot->callback_data); | |
230 | } | |
231 | ||
d8b6b84d EW |
232 | static void xmulti_remove_handle(struct active_request_slot *slot) |
233 | { | |
234 | #ifdef USE_CURL_MULTI | |
235 | curl_multi_remove_handle(curlm, slot->curl); | |
236 | #endif | |
237 | } | |
238 | ||
29508e1e NH |
239 | #ifdef USE_CURL_MULTI |
240 | static void process_curl_messages(void) | |
241 | { | |
242 | int num_messages; | |
243 | struct active_request_slot *slot; | |
244 | CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages); | |
245 | ||
246 | while (curl_message != NULL) { | |
247 | if (curl_message->msg == CURLMSG_DONE) { | |
248 | int curl_result = curl_message->data.result; | |
249 | slot = active_queue_head; | |
250 | while (slot != NULL && | |
251 | slot->curl != curl_message->easy_handle) | |
252 | slot = slot->next; | |
253 | if (slot != NULL) { | |
d8b6b84d | 254 | xmulti_remove_handle(slot); |
29508e1e NH |
255 | slot->curl_result = curl_result; |
256 | finish_active_slot(slot); | |
257 | } else { | |
258 | fprintf(stderr, "Received DONE message for unknown request!\n"); | |
259 | } | |
260 | } else { | |
261 | fprintf(stderr, "Unknown CURL message received: %d\n", | |
262 | (int)curl_message->msg); | |
263 | } | |
264 | curl_message = curl_multi_info_read(curlm, &num_messages); | |
265 | } | |
266 | } | |
267 | #endif | |
268 | ||
ef90d6d4 | 269 | static int http_options(const char *var, const char *value, void *cb) |
29508e1e NH |
270 | { |
271 | if (!strcmp("http.sslverify", var)) { | |
7059cd99 | 272 | curl_ssl_verify = git_config_bool(var, value); |
29508e1e NH |
273 | return 0; |
274 | } | |
f6f2a9e4 LKS |
275 | if (!strcmp("http.sslcipherlist", var)) |
276 | return git_config_string(&ssl_cipherlist, var, value); | |
01861cb7 EP |
277 | if (!strcmp("http.sslversion", var)) |
278 | return git_config_string(&ssl_version, var, value); | |
7059cd99 | 279 | if (!strcmp("http.sslcert", var)) |
8d154964 | 280 | return git_config_pathname(&ssl_cert, var, value); |
ef52aafa | 281 | #if LIBCURL_VERSION_NUM >= 0x070903 |
7059cd99 | 282 | if (!strcmp("http.sslkey", var)) |
8d154964 | 283 | return git_config_pathname(&ssl_key, var, value); |
29508e1e NH |
284 | #endif |
285 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
7059cd99 | 286 | if (!strcmp("http.sslcapath", var)) |
bf9acba2 | 287 | return git_config_pathname(&ssl_capath, var, value); |
29508e1e | 288 | #endif |
7059cd99 | 289 | if (!strcmp("http.sslcainfo", var)) |
bf9acba2 | 290 | return git_config_pathname(&ssl_cainfo, var, value); |
754ae192 | 291 | if (!strcmp("http.sslcertpasswordprotected", var)) { |
3f4ccd2b | 292 | ssl_cert_password_required = git_config_bool(var, value); |
754ae192 ML |
293 | return 0; |
294 | } | |
4bc444eb MV |
295 | if (!strcmp("http.ssltry", var)) { |
296 | curl_ssl_try = git_config_bool(var, value); | |
297 | return 0; | |
298 | } | |
ad75ebe5 TRC |
299 | if (!strcmp("http.minsessions", var)) { |
300 | min_curl_sessions = git_config_int(var, value); | |
301 | #ifndef USE_CURL_MULTI | |
302 | if (min_curl_sessions > 1) | |
303 | min_curl_sessions = 1; | |
304 | #endif | |
305 | return 0; | |
306 | } | |
a6080a0a | 307 | #ifdef USE_CURL_MULTI |
29508e1e | 308 | if (!strcmp("http.maxrequests", var)) { |
7059cd99 | 309 | max_requests = git_config_int(var, value); |
29508e1e NH |
310 | return 0; |
311 | } | |
312 | #endif | |
29508e1e | 313 | if (!strcmp("http.lowspeedlimit", var)) { |
7059cd99 | 314 | curl_low_speed_limit = (long)git_config_int(var, value); |
29508e1e NH |
315 | return 0; |
316 | } | |
317 | if (!strcmp("http.lowspeedtime", var)) { | |
7059cd99 | 318 | curl_low_speed_time = (long)git_config_int(var, value); |
29508e1e NH |
319 | return 0; |
320 | } | |
321 | ||
3ea099d4 SK |
322 | if (!strcmp("http.noepsv", var)) { |
323 | curl_ftp_no_epsv = git_config_bool(var, value); | |
324 | return 0; | |
325 | } | |
7059cd99 JH |
326 | if (!strcmp("http.proxy", var)) |
327 | return git_config_string(&curl_http_proxy, var, value); | |
3ea099d4 | 328 | |
ef976395 KF |
329 | if (!strcmp("http.proxyauthmethod", var)) |
330 | return git_config_string(&http_proxy_authmethod, var, value); | |
331 | ||
bcfb95dd | 332 | if (!strcmp("http.cookiefile", var)) |
e5a39ad8 | 333 | return git_config_pathname(&curl_cookie_file, var, value); |
912b2acf DB |
334 | if (!strcmp("http.savecookies", var)) { |
335 | curl_save_cookies = git_config_bool(var, value); | |
336 | return 0; | |
337 | } | |
bcfb95dd | 338 | |
de1a2fdd | 339 | if (!strcmp("http.postbuffer", var)) { |
37ee680d DT |
340 | http_post_buffer = git_config_ssize_t(var, value); |
341 | if (http_post_buffer < 0) | |
342 | warning(_("negative value for http.postbuffer; defaulting to %d"), LARGE_PACKET_MAX); | |
de1a2fdd SP |
343 | if (http_post_buffer < LARGE_PACKET_MAX) |
344 | http_post_buffer = LARGE_PACKET_MAX; | |
345 | return 0; | |
346 | } | |
347 | ||
b1d1058c SO |
348 | if (!strcmp("http.useragent", var)) |
349 | return git_config_string(&user_agent, var, value); | |
350 | ||
121061f6 | 351 | if (!strcmp("http.emptyauth", var)) { |
40a18fc7 JK |
352 | if (value && !strcmp("auto", value)) |
353 | curl_empty_auth = -1; | |
354 | else | |
355 | curl_empty_auth = git_config_bool(var, value); | |
121061f6 | 356 | return 0; |
357 | } | |
358 | ||
26a7b234 | 359 | if (!strcmp("http.delegation", var)) { |
dd5df538 | 360 | #ifdef CURLGSSAPI_DELEGATION_FLAG |
26a7b234 PS |
361 | return git_config_string(&curl_deleg, var, value); |
362 | #else | |
363 | warning(_("Delegation control is not supported with cURL < 7.22.0")); | |
364 | return 0; | |
365 | #endif | |
366 | } | |
367 | ||
aeff8a61 CE |
368 | if (!strcmp("http.pinnedpubkey", var)) { |
369 | #if LIBCURL_VERSION_NUM >= 0x072c00 | |
370 | return git_config_pathname(&ssl_pinnedkey, var, value); | |
371 | #else | |
372 | warning(_("Public key pinning not supported with cURL < 7.44.0")); | |
373 | return 0; | |
374 | #endif | |
375 | } | |
e79112d2 | 376 | |
8cb01e2f JS |
377 | if (!strcmp("http.extraheader", var)) { |
378 | if (!value) { | |
379 | return config_error_nonbool(var); | |
380 | } else if (!*value) { | |
381 | curl_slist_free_all(extra_http_headers); | |
382 | extra_http_headers = NULL; | |
383 | } else { | |
384 | extra_http_headers = | |
385 | curl_slist_append(extra_http_headers, value); | |
386 | } | |
387 | return 0; | |
388 | } | |
389 | ||
50d34137 JK |
390 | if (!strcmp("http.followredirects", var)) { |
391 | if (value && !strcmp(value, "initial")) | |
392 | http_follow_config = HTTP_FOLLOW_INITIAL; | |
393 | else if (git_config_bool(var, value)) | |
394 | http_follow_config = HTTP_FOLLOW_ALWAYS; | |
395 | else | |
396 | http_follow_config = HTTP_FOLLOW_NONE; | |
397 | return 0; | |
398 | } | |
399 | ||
29508e1e | 400 | /* Fall back on the default ones */ |
ef90d6d4 | 401 | return git_default_config(var, value, cb); |
29508e1e NH |
402 | } |
403 | ||
40a18fc7 JK |
404 | static int curl_empty_auth_enabled(void) |
405 | { | |
406 | if (curl_empty_auth >= 0) | |
407 | return curl_empty_auth; | |
408 | ||
409 | #ifndef LIBCURL_CAN_HANDLE_AUTH_ANY | |
410 | /* | |
411 | * Our libcurl is too old to do AUTH_ANY in the first place; | |
412 | * just default to turning the feature off. | |
413 | */ | |
414 | #else | |
415 | /* | |
416 | * In the automatic case, kick in the empty-auth | |
417 | * hack as long as we would potentially try some | |
418 | * method more exotic than "Basic" or "Digest". | |
419 | * | |
420 | * But only do this when this is our second or | |
421 | * subsequent request, as by then we know what | |
422 | * methods are available. | |
423 | */ | |
424 | if (http_auth_methods_restricted && | |
425 | (http_auth_methods & ~empty_auth_useless)) | |
426 | return 1; | |
427 | #endif | |
428 | return 0; | |
429 | } | |
430 | ||
c33976cb JH |
431 | static void init_curl_http_auth(CURL *result) |
432 | { | |
5275c308 | 433 | if (!http_auth.username || !*http_auth.username) { |
40a18fc7 | 434 | if (curl_empty_auth_enabled()) |
121061f6 | 435 | curl_easy_setopt(result, CURLOPT_USERPWD, ":"); |
6f4c347c | 436 | return; |
121061f6 | 437 | } |
6f4c347c JK |
438 | |
439 | credential_fill(&http_auth); | |
440 | ||
441 | #if LIBCURL_VERSION_NUM >= 0x071301 | |
442 | curl_easy_setopt(result, CURLOPT_USERNAME, http_auth.username); | |
443 | curl_easy_setopt(result, CURLOPT_PASSWORD, http_auth.password); | |
444 | #else | |
445 | { | |
aa0834a0 | 446 | static struct strbuf up = STRBUF_INIT; |
a94cf2cb BC |
447 | /* |
448 | * Note that we assume we only ever have a single set of | |
449 | * credentials in a given program run, so we do not have | |
450 | * to worry about updating this buffer, only setting its | |
451 | * initial value. | |
452 | */ | |
453 | if (!up.len) | |
454 | strbuf_addf(&up, "%s:%s", | |
455 | http_auth.username, http_auth.password); | |
aa0834a0 | 456 | curl_easy_setopt(result, CURLOPT_USERPWD, up.buf); |
c33976cb | 457 | } |
6f4c347c | 458 | #endif |
c33976cb JH |
459 | } |
460 | ||
ef976395 KF |
461 | /* *var must be free-able */ |
462 | static void var_override(const char **var, char *value) | |
463 | { | |
464 | if (value) { | |
465 | free((void *)*var); | |
466 | *var = xstrdup(value); | |
467 | } | |
468 | } | |
469 | ||
372370f1 KF |
470 | static void set_proxyauth_name_password(CURL *result) |
471 | { | |
472 | #if LIBCURL_VERSION_NUM >= 0x071301 | |
473 | curl_easy_setopt(result, CURLOPT_PROXYUSERNAME, | |
474 | proxy_auth.username); | |
475 | curl_easy_setopt(result, CURLOPT_PROXYPASSWORD, | |
476 | proxy_auth.password); | |
477 | #else | |
478 | struct strbuf s = STRBUF_INIT; | |
479 | ||
480 | strbuf_addstr_urlencode(&s, proxy_auth.username, 1); | |
481 | strbuf_addch(&s, ':'); | |
482 | strbuf_addstr_urlencode(&s, proxy_auth.password, 1); | |
483 | curl_proxyuserpwd = strbuf_detach(&s, NULL); | |
484 | curl_easy_setopt(result, CURLOPT_PROXYUSERPWD, curl_proxyuserpwd); | |
485 | #endif | |
486 | } | |
487 | ||
ef976395 KF |
488 | static void init_curl_proxy_auth(CURL *result) |
489 | { | |
372370f1 KF |
490 | if (proxy_auth.username) { |
491 | if (!proxy_auth.password) | |
492 | credential_fill(&proxy_auth); | |
493 | set_proxyauth_name_password(result); | |
494 | } | |
495 | ||
ef976395 KF |
496 | var_override(&http_proxy_authmethod, getenv("GIT_HTTP_PROXY_AUTHMETHOD")); |
497 | ||
498 | #if LIBCURL_VERSION_NUM >= 0x070a07 /* CURLOPT_PROXYAUTH and CURLAUTH_ANY */ | |
499 | if (http_proxy_authmethod) { | |
500 | int i; | |
501 | for (i = 0; i < ARRAY_SIZE(proxy_authmethods); i++) { | |
502 | if (!strcmp(http_proxy_authmethod, proxy_authmethods[i].name)) { | |
503 | curl_easy_setopt(result, CURLOPT_PROXYAUTH, | |
504 | proxy_authmethods[i].curlauth_param); | |
505 | break; | |
506 | } | |
507 | } | |
508 | if (i == ARRAY_SIZE(proxy_authmethods)) { | |
509 | warning("unsupported proxy authentication method %s: using anyauth", | |
510 | http_proxy_authmethod); | |
511 | curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY); | |
512 | } | |
513 | } | |
514 | else | |
515 | curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY); | |
516 | #endif | |
517 | } | |
518 | ||
30dd9163 ML |
519 | static int has_cert_password(void) |
520 | { | |
30dd9163 ML |
521 | if (ssl_cert == NULL || ssl_cert_password_required != 1) |
522 | return 0; | |
148bb6a7 JK |
523 | if (!cert_auth.password) { |
524 | cert_auth.protocol = xstrdup("cert"); | |
75e9a405 | 525 | cert_auth.username = xstrdup(""); |
148bb6a7 JK |
526 | cert_auth.path = xstrdup(ssl_cert); |
527 | credential_fill(&cert_auth); | |
528 | } | |
529 | return 1; | |
30dd9163 ML |
530 | } |
531 | ||
47ce1153 JK |
532 | #if LIBCURL_VERSION_NUM >= 0x071900 |
533 | static void set_curl_keepalive(CURL *c) | |
534 | { | |
535 | curl_easy_setopt(c, CURLOPT_TCP_KEEPALIVE, 1); | |
536 | } | |
537 | ||
538 | #elif LIBCURL_VERSION_NUM >= 0x071000 | |
a15d069a EW |
539 | static int sockopt_callback(void *client, curl_socket_t fd, curlsocktype type) |
540 | { | |
541 | int ka = 1; | |
542 | int rc; | |
543 | socklen_t len = (socklen_t)sizeof(ka); | |
544 | ||
545 | if (type != CURLSOCKTYPE_IPCXN) | |
546 | return 0; | |
547 | ||
548 | rc = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&ka, len); | |
549 | if (rc < 0) | |
d2e255ee | 550 | warning_errno("unable to set SO_KEEPALIVE on socket"); |
a15d069a EW |
551 | |
552 | return 0; /* CURL_SOCKOPT_OK only exists since curl 7.21.5 */ | |
553 | } | |
554 | ||
47ce1153 JK |
555 | static void set_curl_keepalive(CURL *c) |
556 | { | |
557 | curl_easy_setopt(c, CURLOPT_SOCKOPTFUNCTION, sockopt_callback); | |
558 | } | |
559 | ||
560 | #else | |
561 | static void set_curl_keepalive(CURL *c) | |
562 | { | |
563 | /* not supported on older curl versions */ | |
564 | } | |
565 | #endif | |
566 | ||
74c682d3 EP |
567 | static void redact_sensitive_header(struct strbuf *header) |
568 | { | |
569 | const char *sensitive_header; | |
570 | ||
571 | if (skip_prefix(header->buf, "Authorization:", &sensitive_header) || | |
572 | skip_prefix(header->buf, "Proxy-Authorization:", &sensitive_header)) { | |
573 | /* The first token is the type, which is OK to log */ | |
574 | while (isspace(*sensitive_header)) | |
575 | sensitive_header++; | |
576 | while (*sensitive_header && !isspace(*sensitive_header)) | |
577 | sensitive_header++; | |
578 | /* Everything else is opaque and possibly sensitive */ | |
579 | strbuf_setlen(header, sensitive_header - header->buf); | |
580 | strbuf_addstr(header, " <redacted>"); | |
83411783 JT |
581 | } else if (cookies_to_redact.nr && |
582 | skip_prefix(header->buf, "Cookie:", &sensitive_header)) { | |
583 | struct strbuf redacted_header = STRBUF_INIT; | |
584 | char *cookie; | |
585 | ||
586 | while (isspace(*sensitive_header)) | |
587 | sensitive_header++; | |
588 | ||
589 | /* | |
590 | * The contents of header starting from sensitive_header will | |
591 | * subsequently be overridden, so it is fine to mutate this | |
592 | * string (hence the assignment to "char *"). | |
593 | */ | |
594 | cookie = (char *) sensitive_header; | |
595 | ||
596 | while (cookie) { | |
597 | char *equals; | |
598 | char *semicolon = strstr(cookie, "; "); | |
599 | if (semicolon) | |
600 | *semicolon = 0; | |
601 | equals = strchrnul(cookie, '='); | |
602 | if (!equals) { | |
603 | /* invalid cookie, just append and continue */ | |
604 | strbuf_addstr(&redacted_header, cookie); | |
605 | continue; | |
606 | } | |
607 | *equals = 0; /* temporarily set to NUL for lookup */ | |
608 | if (string_list_lookup(&cookies_to_redact, cookie)) { | |
609 | strbuf_addstr(&redacted_header, cookie); | |
610 | strbuf_addstr(&redacted_header, "=<redacted>"); | |
611 | } else { | |
612 | *equals = '='; | |
613 | strbuf_addstr(&redacted_header, cookie); | |
614 | } | |
615 | if (semicolon) { | |
616 | /* | |
617 | * There are more cookies. (Or, for some | |
618 | * reason, the input string ends in "; ".) | |
619 | */ | |
620 | strbuf_addstr(&redacted_header, "; "); | |
621 | cookie = semicolon + strlen("; "); | |
622 | } else { | |
623 | cookie = NULL; | |
624 | } | |
625 | } | |
626 | ||
627 | strbuf_setlen(header, sensitive_header - header->buf); | |
628 | strbuf_addbuf(header, &redacted_header); | |
74c682d3 EP |
629 | } |
630 | } | |
631 | ||
632 | static void curl_dump_header(const char *text, unsigned char *ptr, size_t size, int hide_sensitive_header) | |
633 | { | |
634 | struct strbuf out = STRBUF_INIT; | |
635 | struct strbuf **headers, **header; | |
636 | ||
637 | strbuf_addf(&out, "%s, %10.10ld bytes (0x%8.8lx)\n", | |
638 | text, (long)size, (long)size); | |
639 | trace_strbuf(&trace_curl, &out); | |
640 | strbuf_reset(&out); | |
641 | strbuf_add(&out, ptr, size); | |
642 | headers = strbuf_split_max(&out, '\n', 0); | |
643 | ||
644 | for (header = headers; *header; header++) { | |
645 | if (hide_sensitive_header) | |
646 | redact_sensitive_header(*header); | |
647 | strbuf_insert((*header), 0, text, strlen(text)); | |
648 | strbuf_insert((*header), strlen(text), ": ", 2); | |
649 | strbuf_rtrim((*header)); | |
650 | strbuf_addch((*header), '\n'); | |
651 | trace_strbuf(&trace_curl, (*header)); | |
652 | } | |
653 | strbuf_list_free(headers); | |
654 | strbuf_release(&out); | |
655 | } | |
656 | ||
657 | static void curl_dump_data(const char *text, unsigned char *ptr, size_t size) | |
658 | { | |
659 | size_t i; | |
660 | struct strbuf out = STRBUF_INIT; | |
661 | unsigned int width = 60; | |
662 | ||
663 | strbuf_addf(&out, "%s, %10.10ld bytes (0x%8.8lx)\n", | |
664 | text, (long)size, (long)size); | |
665 | trace_strbuf(&trace_curl, &out); | |
666 | ||
667 | for (i = 0; i < size; i += width) { | |
668 | size_t w; | |
669 | ||
670 | strbuf_reset(&out); | |
671 | strbuf_addf(&out, "%s: ", text); | |
672 | for (w = 0; (w < width) && (i + w < size); w++) { | |
673 | unsigned char ch = ptr[i + w]; | |
674 | ||
675 | strbuf_addch(&out, | |
676 | (ch >= 0x20) && (ch < 0x80) | |
677 | ? ch : '.'); | |
678 | } | |
679 | strbuf_addch(&out, '\n'); | |
680 | trace_strbuf(&trace_curl, &out); | |
681 | } | |
682 | strbuf_release(&out); | |
683 | } | |
684 | ||
685 | static int curl_trace(CURL *handle, curl_infotype type, char *data, size_t size, void *userp) | |
686 | { | |
687 | const char *text; | |
688 | enum { NO_FILTER = 0, DO_FILTER = 1 }; | |
689 | ||
690 | switch (type) { | |
691 | case CURLINFO_TEXT: | |
692 | trace_printf_key(&trace_curl, "== Info: %s", data); | |
d0e99839 | 693 | break; |
74c682d3 EP |
694 | case CURLINFO_HEADER_OUT: |
695 | text = "=> Send header"; | |
696 | curl_dump_header(text, (unsigned char *)data, size, DO_FILTER); | |
697 | break; | |
698 | case CURLINFO_DATA_OUT: | |
8ba18e6f JT |
699 | if (trace_curl_data) { |
700 | text = "=> Send data"; | |
701 | curl_dump_data(text, (unsigned char *)data, size); | |
702 | } | |
74c682d3 EP |
703 | break; |
704 | case CURLINFO_SSL_DATA_OUT: | |
8ba18e6f JT |
705 | if (trace_curl_data) { |
706 | text = "=> Send SSL data"; | |
707 | curl_dump_data(text, (unsigned char *)data, size); | |
708 | } | |
74c682d3 EP |
709 | break; |
710 | case CURLINFO_HEADER_IN: | |
711 | text = "<= Recv header"; | |
712 | curl_dump_header(text, (unsigned char *)data, size, NO_FILTER); | |
713 | break; | |
714 | case CURLINFO_DATA_IN: | |
8ba18e6f JT |
715 | if (trace_curl_data) { |
716 | text = "<= Recv data"; | |
717 | curl_dump_data(text, (unsigned char *)data, size); | |
718 | } | |
74c682d3 EP |
719 | break; |
720 | case CURLINFO_SSL_DATA_IN: | |
8ba18e6f JT |
721 | if (trace_curl_data) { |
722 | text = "<= Recv SSL data"; | |
723 | curl_dump_data(text, (unsigned char *)data, size); | |
724 | } | |
74c682d3 | 725 | break; |
d0e99839 JK |
726 | |
727 | default: /* we ignore unknown types by default */ | |
728 | return 0; | |
74c682d3 EP |
729 | } |
730 | return 0; | |
731 | } | |
732 | ||
733 | void setup_curl_trace(CURL *handle) | |
734 | { | |
735 | if (!trace_want(&trace_curl)) | |
736 | return; | |
737 | curl_easy_setopt(handle, CURLOPT_VERBOSE, 1L); | |
738 | curl_easy_setopt(handle, CURLOPT_DEBUGFUNCTION, curl_trace); | |
739 | curl_easy_setopt(handle, CURLOPT_DEBUGDATA, NULL); | |
740 | } | |
741 | ||
f18777ba | 742 | #ifdef CURLPROTO_HTTP |
a768a022 | 743 | static long get_curl_allowed_protocols(int from_user) |
aeae4db1 BW |
744 | { |
745 | long allowed_protocols = 0; | |
746 | ||
a768a022 | 747 | if (is_transport_allowed("http", from_user)) |
aeae4db1 | 748 | allowed_protocols |= CURLPROTO_HTTP; |
a768a022 | 749 | if (is_transport_allowed("https", from_user)) |
aeae4db1 | 750 | allowed_protocols |= CURLPROTO_HTTPS; |
a768a022 | 751 | if (is_transport_allowed("ftp", from_user)) |
aeae4db1 | 752 | allowed_protocols |= CURLPROTO_FTP; |
a768a022 | 753 | if (is_transport_allowed("ftps", from_user)) |
aeae4db1 BW |
754 | allowed_protocols |= CURLPROTO_FTPS; |
755 | ||
756 | return allowed_protocols; | |
757 | } | |
f18777ba | 758 | #endif |
74c682d3 | 759 | |
4251ccbd | 760 | static CURL *get_curl_handle(void) |
11979b98 | 761 | { |
4251ccbd | 762 | CURL *result = curl_easy_init(); |
11979b98 | 763 | |
faa3807c BR |
764 | if (!result) |
765 | die("curl_easy_init failed"); | |
766 | ||
a5ccc597 JH |
767 | if (!curl_ssl_verify) { |
768 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0); | |
769 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0); | |
770 | } else { | |
771 | /* Verify authenticity of the peer's certificate */ | |
772 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1); | |
773 | /* The name in the cert must match whom we tried to connect */ | |
774 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2); | |
775 | } | |
776 | ||
11979b98 JH |
777 | #if LIBCURL_VERSION_NUM >= 0x070907 |
778 | curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL); | |
779 | #endif | |
b8ac9230 | 780 | #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY |
525ecd26 | 781 | curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY); |
b8ac9230 | 782 | #endif |
11979b98 | 783 | |
dd5df538 | 784 | #ifdef CURLGSSAPI_DELEGATION_FLAG |
26a7b234 PS |
785 | if (curl_deleg) { |
786 | int i; | |
787 | for (i = 0; i < ARRAY_SIZE(curl_deleg_levels); i++) { | |
788 | if (!strcmp(curl_deleg, curl_deleg_levels[i].name)) { | |
789 | curl_easy_setopt(result, CURLOPT_GSSAPI_DELEGATION, | |
790 | curl_deleg_levels[i].curl_deleg_param); | |
791 | break; | |
792 | } | |
793 | } | |
794 | if (i == ARRAY_SIZE(curl_deleg_levels)) | |
795 | warning("Unknown delegation method '%s': using default", | |
796 | curl_deleg); | |
797 | } | |
798 | #endif | |
799 | ||
a4ddbc33 JK |
800 | if (http_proactive_auth) |
801 | init_curl_http_auth(result); | |
802 | ||
01861cb7 EP |
803 | if (getenv("GIT_SSL_VERSION")) |
804 | ssl_version = getenv("GIT_SSL_VERSION"); | |
805 | if (ssl_version && *ssl_version) { | |
806 | int i; | |
807 | for (i = 0; i < ARRAY_SIZE(sslversions); i++) { | |
808 | if (!strcmp(ssl_version, sslversions[i].name)) { | |
809 | curl_easy_setopt(result, CURLOPT_SSLVERSION, | |
810 | sslversions[i].ssl_version); | |
811 | break; | |
812 | } | |
813 | } | |
814 | if (i == ARRAY_SIZE(sslversions)) | |
815 | warning("unsupported ssl version %s: using default", | |
816 | ssl_version); | |
817 | } | |
818 | ||
f6f2a9e4 LKS |
819 | if (getenv("GIT_SSL_CIPHER_LIST")) |
820 | ssl_cipherlist = getenv("GIT_SSL_CIPHER_LIST"); | |
f6f2a9e4 LKS |
821 | if (ssl_cipherlist != NULL && *ssl_cipherlist) |
822 | curl_easy_setopt(result, CURLOPT_SSL_CIPHER_LIST, | |
823 | ssl_cipherlist); | |
824 | ||
11979b98 JH |
825 | if (ssl_cert != NULL) |
826 | curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert); | |
30dd9163 | 827 | if (has_cert_password()) |
148bb6a7 | 828 | curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password); |
ef52aafa | 829 | #if LIBCURL_VERSION_NUM >= 0x070903 |
11979b98 JH |
830 | if (ssl_key != NULL) |
831 | curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key); | |
832 | #endif | |
833 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
834 | if (ssl_capath != NULL) | |
835 | curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath); | |
aeff8a61 CE |
836 | #endif |
837 | #if LIBCURL_VERSION_NUM >= 0x072c00 | |
838 | if (ssl_pinnedkey != NULL) | |
839 | curl_easy_setopt(result, CURLOPT_PINNEDPUBLICKEY, ssl_pinnedkey); | |
11979b98 JH |
840 | #endif |
841 | if (ssl_cainfo != NULL) | |
842 | curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo); | |
11979b98 JH |
843 | |
844 | if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) { | |
845 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT, | |
846 | curl_low_speed_limit); | |
847 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME, | |
848 | curl_low_speed_time); | |
849 | } | |
850 | ||
b2581164 | 851 | curl_easy_setopt(result, CURLOPT_MAXREDIRS, 20); |
311e2ea0 TRC |
852 | #if LIBCURL_VERSION_NUM >= 0x071301 |
853 | curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL); | |
854 | #elif LIBCURL_VERSION_NUM >= 0x071101 | |
855 | curl_easy_setopt(result, CURLOPT_POST301, 1); | |
856 | #endif | |
f18777ba | 857 | #ifdef CURLPROTO_HTTP |
aeae4db1 | 858 | curl_easy_setopt(result, CURLOPT_REDIR_PROTOCOLS, |
a768a022 | 859 | get_curl_allowed_protocols(0)); |
aeae4db1 | 860 | curl_easy_setopt(result, CURLOPT_PROTOCOLS, |
a768a022 | 861 | get_curl_allowed_protocols(-1)); |
f4113cac | 862 | #else |
f962ddf6 BW |
863 | warning("protocol restrictions not applied to curl redirects because\n" |
864 | "your curl version is too old (>= 7.19.4)"); | |
f4113cac | 865 | #endif |
7982d74e | 866 | if (getenv("GIT_CURL_VERBOSE")) |
74c682d3 EP |
867 | curl_easy_setopt(result, CURLOPT_VERBOSE, 1L); |
868 | setup_curl_trace(result); | |
8ba18e6f JT |
869 | if (getenv("GIT_TRACE_CURL_NO_DATA")) |
870 | trace_curl_data = 0; | |
83411783 JT |
871 | if (getenv("GIT_REDACT_COOKIES")) { |
872 | string_list_split(&cookies_to_redact, | |
873 | getenv("GIT_REDACT_COOKIES"), ',', -1); | |
874 | string_list_sort(&cookies_to_redact); | |
875 | } | |
7982d74e | 876 | |
b1d1058c | 877 | curl_easy_setopt(result, CURLOPT_USERAGENT, |
745c7c8e | 878 | user_agent ? user_agent : git_user_agent()); |
20fc9bc5 | 879 | |
3ea099d4 SK |
880 | if (curl_ftp_no_epsv) |
881 | curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0); | |
882 | ||
4bc444eb MV |
883 | #ifdef CURLOPT_USE_SSL |
884 | if (curl_ssl_try) | |
885 | curl_easy_setopt(result, CURLOPT_USE_SSL, CURLUSESSL_TRY); | |
886 | #endif | |
887 | ||
372370f1 KF |
888 | /* |
889 | * CURL also examines these variables as a fallback; but we need to query | |
890 | * them here in order to decide whether to prompt for missing password (cf. | |
891 | * init_curl_proxy_auth()). | |
892 | * | |
893 | * Unlike many other common environment variables, these are historically | |
894 | * lowercase only. It appears that CURL did not know this and implemented | |
895 | * only uppercase variants, which was later corrected to take both - with | |
896 | * the exception of http_proxy, which is lowercase only also in CURL. As | |
897 | * the lowercase versions are the historical quasi-standard, they take | |
898 | * precedence here, as in CURL. | |
899 | */ | |
900 | if (!curl_http_proxy) { | |
d63ed6ef | 901 | if (http_auth.protocol && !strcmp(http_auth.protocol, "https")) { |
372370f1 KF |
902 | var_override(&curl_http_proxy, getenv("HTTPS_PROXY")); |
903 | var_override(&curl_http_proxy, getenv("https_proxy")); | |
904 | } else { | |
905 | var_override(&curl_http_proxy, getenv("http_proxy")); | |
906 | } | |
907 | if (!curl_http_proxy) { | |
908 | var_override(&curl_http_proxy, getenv("ALL_PROXY")); | |
909 | var_override(&curl_http_proxy, getenv("all_proxy")); | |
910 | } | |
911 | } | |
912 | ||
57415089 SR |
913 | if (curl_http_proxy && curl_http_proxy[0] == '\0') { |
914 | /* | |
915 | * Handle case with the empty http.proxy value here to keep | |
916 | * common code clean. | |
917 | * NB: empty option disables proxying at all. | |
918 | */ | |
919 | curl_easy_setopt(result, CURLOPT_PROXY, ""); | |
920 | } else if (curl_http_proxy) { | |
6d7afe07 | 921 | #if LIBCURL_VERSION_NUM >= 0x071800 |
87f8a0b2 JH |
922 | if (starts_with(curl_http_proxy, "socks5h")) |
923 | curl_easy_setopt(result, | |
924 | CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5_HOSTNAME); | |
925 | else if (starts_with(curl_http_proxy, "socks5")) | |
6d7afe07 PT |
926 | curl_easy_setopt(result, |
927 | CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5); | |
928 | else if (starts_with(curl_http_proxy, "socks4a")) | |
929 | curl_easy_setopt(result, | |
930 | CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4A); | |
931 | else if (starts_with(curl_http_proxy, "socks")) | |
932 | curl_easy_setopt(result, | |
933 | CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4); | |
82b6803a WS |
934 | #endif |
935 | #if LIBCURL_VERSION_NUM >= 0x073400 | |
936 | else if (starts_with(curl_http_proxy, "https")) | |
937 | curl_easy_setopt(result, | |
938 | CURLOPT_PROXYTYPE, CURLPROXY_HTTPS); | |
6d7afe07 | 939 | #endif |
372370f1 KF |
940 | if (strstr(curl_http_proxy, "://")) |
941 | credential_from_url(&proxy_auth, curl_http_proxy); | |
942 | else { | |
943 | struct strbuf url = STRBUF_INIT; | |
944 | strbuf_addf(&url, "http://%s", curl_http_proxy); | |
945 | credential_from_url(&proxy_auth, url.buf); | |
946 | strbuf_release(&url); | |
947 | } | |
948 | ||
ae51d911 SR |
949 | if (!proxy_auth.host) |
950 | die("Invalid proxy URL '%s'", curl_http_proxy); | |
951 | ||
372370f1 | 952 | curl_easy_setopt(result, CURLOPT_PROXY, proxy_auth.host); |
d445fda4 JX |
953 | #if LIBCURL_VERSION_NUM >= 0x071304 |
954 | var_override(&curl_no_proxy, getenv("NO_PROXY")); | |
955 | var_override(&curl_no_proxy, getenv("no_proxy")); | |
956 | curl_easy_setopt(result, CURLOPT_NOPROXY, curl_no_proxy); | |
957 | #endif | |
5841520b | 958 | } |
ef976395 | 959 | init_curl_proxy_auth(result); |
9c5665aa | 960 | |
47ce1153 | 961 | set_curl_keepalive(result); |
a15d069a | 962 | |
11979b98 JH |
963 | return result; |
964 | } | |
965 | ||
7059cd99 JH |
966 | static void set_from_env(const char **var, const char *envname) |
967 | { | |
968 | const char *val = getenv(envname); | |
969 | if (val) | |
970 | *var = val; | |
971 | } | |
972 | ||
19113a26 BW |
973 | static void protocol_http_header(void) |
974 | { | |
975 | if (get_protocol_version_config() > 0) { | |
976 | struct strbuf protocol_header = STRBUF_INIT; | |
977 | ||
978 | strbuf_addf(&protocol_header, GIT_PROTOCOL_HEADER ": version=%d", | |
979 | get_protocol_version_config()); | |
980 | ||
981 | ||
982 | extra_http_headers = curl_slist_append(extra_http_headers, | |
983 | protocol_header.buf); | |
984 | strbuf_release(&protocol_header); | |
985 | } | |
986 | } | |
987 | ||
a4ddbc33 | 988 | void http_init(struct remote *remote, const char *url, int proactive_auth) |
29508e1e NH |
989 | { |
990 | char *low_speed_limit; | |
991 | char *low_speed_time; | |
6a56993b KM |
992 | char *normalized_url; |
993 | struct urlmatch_config config = { STRING_LIST_INIT_DUP }; | |
994 | ||
995 | config.section = "http"; | |
996 | config.key = NULL; | |
997 | config.collect_fn = http_options; | |
998 | config.cascade_fn = git_default_config; | |
999 | config.cb = NULL; | |
29508e1e | 1000 | |
e9176745 | 1001 | http_is_verbose = 0; |
6a56993b | 1002 | normalized_url = url_normalize(url, &config.url); |
e9176745 | 1003 | |
6a56993b KM |
1004 | git_config(urlmatch_config_entry, &config); |
1005 | free(normalized_url); | |
7059cd99 | 1006 | |
faa3807c BR |
1007 | if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) |
1008 | die("curl_global_init failed"); | |
29508e1e | 1009 | |
a4ddbc33 JK |
1010 | http_proactive_auth = proactive_auth; |
1011 | ||
9fc6440d MH |
1012 | if (remote && remote->http_proxy) |
1013 | curl_http_proxy = xstrdup(remote->http_proxy); | |
1014 | ||
ef976395 KF |
1015 | if (remote) |
1016 | var_override(&http_proxy_authmethod, remote->http_proxy_authmethod); | |
1017 | ||
19113a26 BW |
1018 | protocol_http_header(); |
1019 | ||
8cb01e2f JS |
1020 | pragma_header = curl_slist_append(http_copy_default_headers(), |
1021 | "Pragma: no-cache"); | |
1022 | no_pragma_header = curl_slist_append(http_copy_default_headers(), | |
1023 | "Pragma:"); | |
29508e1e NH |
1024 | |
1025 | #ifdef USE_CURL_MULTI | |
1026 | { | |
1027 | char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS"); | |
1028 | if (http_max_requests != NULL) | |
1029 | max_requests = atoi(http_max_requests); | |
1030 | } | |
1031 | ||
1032 | curlm = curl_multi_init(); | |
8837eb47 JK |
1033 | if (!curlm) |
1034 | die("curl_multi_init failed"); | |
29508e1e NH |
1035 | #endif |
1036 | ||
1037 | if (getenv("GIT_SSL_NO_VERIFY")) | |
1038 | curl_ssl_verify = 0; | |
1039 | ||
7059cd99 | 1040 | set_from_env(&ssl_cert, "GIT_SSL_CERT"); |
ef52aafa | 1041 | #if LIBCURL_VERSION_NUM >= 0x070903 |
7059cd99 | 1042 | set_from_env(&ssl_key, "GIT_SSL_KEY"); |
29508e1e NH |
1043 | #endif |
1044 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
7059cd99 | 1045 | set_from_env(&ssl_capath, "GIT_SSL_CAPATH"); |
29508e1e | 1046 | #endif |
7059cd99 | 1047 | set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO"); |
29508e1e | 1048 | |
b1d1058c SO |
1049 | set_from_env(&user_agent, "GIT_HTTP_USER_AGENT"); |
1050 | ||
29508e1e NH |
1051 | low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT"); |
1052 | if (low_speed_limit != NULL) | |
1053 | curl_low_speed_limit = strtol(low_speed_limit, NULL, 10); | |
1054 | low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME"); | |
1055 | if (low_speed_time != NULL) | |
1056 | curl_low_speed_time = strtol(low_speed_time, NULL, 10); | |
1057 | ||
29508e1e NH |
1058 | if (curl_ssl_verify == -1) |
1059 | curl_ssl_verify = 1; | |
1060 | ||
ad75ebe5 | 1061 | curl_session_count = 0; |
29508e1e NH |
1062 | #ifdef USE_CURL_MULTI |
1063 | if (max_requests < 1) | |
1064 | max_requests = DEFAULT_MAX_REQUESTS; | |
1065 | #endif | |
1066 | ||
3ea099d4 SK |
1067 | if (getenv("GIT_CURL_FTP_NO_EPSV")) |
1068 | curl_ftp_no_epsv = 1; | |
1069 | ||
deba4937 | 1070 | if (url) { |
148bb6a7 | 1071 | credential_from_url(&http_auth, url); |
754ae192 ML |
1072 | if (!ssl_cert_password_required && |
1073 | getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") && | |
59556548 | 1074 | starts_with(url, "https://")) |
30dd9163 ML |
1075 | ssl_cert_password_required = 1; |
1076 | } | |
c33976cb | 1077 | |
29508e1e NH |
1078 | #ifndef NO_CURL_EASY_DUPHANDLE |
1079 | curl_default = get_curl_handle(); | |
1080 | #endif | |
1081 | } | |
1082 | ||
1083 | void http_cleanup(void) | |
1084 | { | |
1085 | struct active_request_slot *slot = active_queue_head; | |
29508e1e NH |
1086 | |
1087 | while (slot != NULL) { | |
3278cd0a | 1088 | struct active_request_slot *next = slot->next; |
f23d1f76 | 1089 | if (slot->curl != NULL) { |
d8b6b84d | 1090 | xmulti_remove_handle(slot); |
29508e1e | 1091 | curl_easy_cleanup(slot->curl); |
f23d1f76 | 1092 | } |
3278cd0a SP |
1093 | free(slot); |
1094 | slot = next; | |
29508e1e | 1095 | } |
3278cd0a | 1096 | active_queue_head = NULL; |
29508e1e NH |
1097 | |
1098 | #ifndef NO_CURL_EASY_DUPHANDLE | |
1099 | curl_easy_cleanup(curl_default); | |
1100 | #endif | |
1101 | ||
1102 | #ifdef USE_CURL_MULTI | |
1103 | curl_multi_cleanup(curlm); | |
1104 | #endif | |
1105 | curl_global_cleanup(); | |
b3ca4e4e | 1106 | |
8cb01e2f JS |
1107 | curl_slist_free_all(extra_http_headers); |
1108 | extra_http_headers = NULL; | |
1109 | ||
b3ca4e4e | 1110 | curl_slist_free_all(pragma_header); |
3278cd0a | 1111 | pragma_header = NULL; |
9fc6440d | 1112 | |
e9176745 TRC |
1113 | curl_slist_free_all(no_pragma_header); |
1114 | no_pragma_header = NULL; | |
1115 | ||
9fc6440d | 1116 | if (curl_http_proxy) { |
e4a80ecf | 1117 | free((void *)curl_http_proxy); |
9fc6440d MH |
1118 | curl_http_proxy = NULL; |
1119 | } | |
30dd9163 | 1120 | |
372370f1 KF |
1121 | if (proxy_auth.password) { |
1122 | memset(proxy_auth.password, 0, strlen(proxy_auth.password)); | |
6a83d902 | 1123 | FREE_AND_NULL(proxy_auth.password); |
372370f1 KF |
1124 | } |
1125 | ||
1126 | free((void *)curl_proxyuserpwd); | |
1127 | curl_proxyuserpwd = NULL; | |
1128 | ||
ef976395 KF |
1129 | free((void *)http_proxy_authmethod); |
1130 | http_proxy_authmethod = NULL; | |
1131 | ||
148bb6a7 JK |
1132 | if (cert_auth.password != NULL) { |
1133 | memset(cert_auth.password, 0, strlen(cert_auth.password)); | |
6a83d902 | 1134 | FREE_AND_NULL(cert_auth.password); |
30dd9163 ML |
1135 | } |
1136 | ssl_cert_password_required = 0; | |
f18604bb | 1137 | |
6a83d902 | 1138 | FREE_AND_NULL(cached_accept_language); |
29508e1e NH |
1139 | } |
1140 | ||
29508e1e NH |
1141 | struct active_request_slot *get_active_slot(void) |
1142 | { | |
1143 | struct active_request_slot *slot = active_queue_head; | |
1144 | struct active_request_slot *newslot; | |
1145 | ||
1146 | #ifdef USE_CURL_MULTI | |
1147 | int num_transfers; | |
1148 | ||
1149 | /* Wait for a slot to open up if the queue is full */ | |
1150 | while (active_requests >= max_requests) { | |
1151 | curl_multi_perform(curlm, &num_transfers); | |
4251ccbd | 1152 | if (num_transfers < active_requests) |
29508e1e | 1153 | process_curl_messages(); |
29508e1e NH |
1154 | } |
1155 | #endif | |
1156 | ||
4251ccbd | 1157 | while (slot != NULL && slot->in_use) |
29508e1e | 1158 | slot = slot->next; |
4251ccbd | 1159 | |
29508e1e NH |
1160 | if (slot == NULL) { |
1161 | newslot = xmalloc(sizeof(*newslot)); | |
1162 | newslot->curl = NULL; | |
1163 | newslot->in_use = 0; | |
1164 | newslot->next = NULL; | |
1165 | ||
1166 | slot = active_queue_head; | |
1167 | if (slot == NULL) { | |
1168 | active_queue_head = newslot; | |
1169 | } else { | |
4251ccbd | 1170 | while (slot->next != NULL) |
29508e1e | 1171 | slot = slot->next; |
29508e1e NH |
1172 | slot->next = newslot; |
1173 | } | |
1174 | slot = newslot; | |
1175 | } | |
1176 | ||
1177 | if (slot->curl == NULL) { | |
1178 | #ifdef NO_CURL_EASY_DUPHANDLE | |
1179 | slot->curl = get_curl_handle(); | |
1180 | #else | |
1181 | slot->curl = curl_easy_duphandle(curl_default); | |
1182 | #endif | |
ad75ebe5 | 1183 | curl_session_count++; |
29508e1e NH |
1184 | } |
1185 | ||
1186 | active_requests++; | |
1187 | slot->in_use = 1; | |
c8568e13 | 1188 | slot->results = NULL; |
baa7b67d | 1189 | slot->finished = NULL; |
29508e1e NH |
1190 | slot->callback_data = NULL; |
1191 | slot->callback_func = NULL; | |
bcfb95dd | 1192 | curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file); |
912b2acf DB |
1193 | if (curl_save_cookies) |
1194 | curl_easy_setopt(slot->curl, CURLOPT_COOKIEJAR, curl_cookie_file); | |
29508e1e | 1195 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header); |
29508e1e | 1196 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr); |
9094950d NH |
1197 | curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL); |
1198 | curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL); | |
1199 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL); | |
1e41827d | 1200 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL); |
9094950d NH |
1201 | curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0); |
1202 | curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); | |
b793acf1 | 1203 | curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 1); |
835c4d36 | 1204 | curl_easy_setopt(slot->curl, CURLOPT_RANGE, NULL); |
c915f11e | 1205 | |
50d34137 JK |
1206 | /* |
1207 | * Default following to off unless "ALWAYS" is configured; this gives | |
1208 | * callers a sane starting point, and they can tweak for individual | |
1209 | * HTTP_FOLLOW_* cases themselves. | |
1210 | */ | |
1211 | if (http_follow_config == HTTP_FOLLOW_ALWAYS) | |
1212 | curl_easy_setopt(slot->curl, CURLOPT_FOLLOWLOCATION, 1); | |
1213 | else | |
1214 | curl_easy_setopt(slot->curl, CURLOPT_FOLLOWLOCATION, 0); | |
1215 | ||
c915f11e EW |
1216 | #if LIBCURL_VERSION_NUM >= 0x070a08 |
1217 | curl_easy_setopt(slot->curl, CURLOPT_IPRESOLVE, git_curl_ipresolve); | |
1218 | #endif | |
4dbe6646 | 1219 | #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY |
1220 | curl_easy_setopt(slot->curl, CURLOPT_HTTPAUTH, http_auth_methods); | |
1221 | #endif | |
40a18fc7 | 1222 | if (http_auth.password || curl_empty_auth_enabled()) |
dfa1725a | 1223 | init_curl_http_auth(slot->curl); |
29508e1e NH |
1224 | |
1225 | return slot; | |
1226 | } | |
1227 | ||
1228 | int start_active_slot(struct active_request_slot *slot) | |
1229 | { | |
1230 | #ifdef USE_CURL_MULTI | |
1231 | CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl); | |
45c17412 | 1232 | int num_transfers; |
29508e1e NH |
1233 | |
1234 | if (curlm_result != CURLM_OK && | |
1235 | curlm_result != CURLM_CALL_MULTI_PERFORM) { | |
9f1b5884 EW |
1236 | warning("curl_multi_add_handle failed: %s", |
1237 | curl_multi_strerror(curlm_result)); | |
29508e1e NH |
1238 | active_requests--; |
1239 | slot->in_use = 0; | |
1240 | return 0; | |
1241 | } | |
45c17412 DB |
1242 | |
1243 | /* | |
1244 | * We know there must be something to do, since we just added | |
1245 | * something. | |
1246 | */ | |
1247 | curl_multi_perform(curlm, &num_transfers); | |
29508e1e NH |
1248 | #endif |
1249 | return 1; | |
1250 | } | |
1251 | ||
1252 | #ifdef USE_CURL_MULTI | |
fc57b6aa DB |
1253 | struct fill_chain { |
1254 | void *data; | |
1255 | int (*fill)(void *); | |
1256 | struct fill_chain *next; | |
1257 | }; | |
1258 | ||
4251ccbd | 1259 | static struct fill_chain *fill_cfg; |
fc57b6aa DB |
1260 | |
1261 | void add_fill_function(void *data, int (*fill)(void *)) | |
1262 | { | |
e8eec71d | 1263 | struct fill_chain *new = xmalloc(sizeof(*new)); |
fc57b6aa DB |
1264 | struct fill_chain **linkp = &fill_cfg; |
1265 | new->data = data; | |
1266 | new->fill = fill; | |
1267 | new->next = NULL; | |
1268 | while (*linkp) | |
1269 | linkp = &(*linkp)->next; | |
1270 | *linkp = new; | |
1271 | } | |
1272 | ||
45c17412 DB |
1273 | void fill_active_slots(void) |
1274 | { | |
1275 | struct active_request_slot *slot = active_queue_head; | |
1276 | ||
fc57b6aa DB |
1277 | while (active_requests < max_requests) { |
1278 | struct fill_chain *fill; | |
1279 | for (fill = fill_cfg; fill; fill = fill->next) | |
1280 | if (fill->fill(fill->data)) | |
1281 | break; | |
1282 | ||
1283 | if (!fill) | |
45c17412 | 1284 | break; |
fc57b6aa | 1285 | } |
45c17412 DB |
1286 | |
1287 | while (slot != NULL) { | |
ad75ebe5 TRC |
1288 | if (!slot->in_use && slot->curl != NULL |
1289 | && curl_session_count > min_curl_sessions) { | |
45c17412 DB |
1290 | curl_easy_cleanup(slot->curl); |
1291 | slot->curl = NULL; | |
ad75ebe5 | 1292 | curl_session_count--; |
45c17412 DB |
1293 | } |
1294 | slot = slot->next; | |
1295 | } | |
1296 | } | |
1297 | ||
29508e1e NH |
1298 | void step_active_slots(void) |
1299 | { | |
1300 | int num_transfers; | |
1301 | CURLMcode curlm_result; | |
1302 | ||
1303 | do { | |
1304 | curlm_result = curl_multi_perform(curlm, &num_transfers); | |
1305 | } while (curlm_result == CURLM_CALL_MULTI_PERFORM); | |
1306 | if (num_transfers < active_requests) { | |
1307 | process_curl_messages(); | |
1308 | fill_active_slots(); | |
1309 | } | |
1310 | } | |
1311 | #endif | |
1312 | ||
1313 | void run_active_slot(struct active_request_slot *slot) | |
1314 | { | |
1315 | #ifdef USE_CURL_MULTI | |
29508e1e NH |
1316 | fd_set readfds; |
1317 | fd_set writefds; | |
1318 | fd_set excfds; | |
1319 | int max_fd; | |
1320 | struct timeval select_timeout; | |
baa7b67d | 1321 | int finished = 0; |
29508e1e | 1322 | |
baa7b67d NH |
1323 | slot->finished = &finished; |
1324 | while (!finished) { | |
29508e1e NH |
1325 | step_active_slots(); |
1326 | ||
df26c471 | 1327 | if (slot->in_use) { |
eb56c821 MF |
1328 | #if LIBCURL_VERSION_NUM >= 0x070f04 |
1329 | long curl_timeout; | |
1330 | curl_multi_timeout(curlm, &curl_timeout); | |
1331 | if (curl_timeout == 0) { | |
1332 | continue; | |
1333 | } else if (curl_timeout == -1) { | |
1334 | select_timeout.tv_sec = 0; | |
1335 | select_timeout.tv_usec = 50000; | |
1336 | } else { | |
1337 | select_timeout.tv_sec = curl_timeout / 1000; | |
1338 | select_timeout.tv_usec = (curl_timeout % 1000) * 1000; | |
1339 | } | |
1340 | #else | |
1341 | select_timeout.tv_sec = 0; | |
1342 | select_timeout.tv_usec = 50000; | |
1343 | #endif | |
29508e1e | 1344 | |
6f9dd67f | 1345 | max_fd = -1; |
29508e1e NH |
1346 | FD_ZERO(&readfds); |
1347 | FD_ZERO(&writefds); | |
1348 | FD_ZERO(&excfds); | |
6f9dd67f | 1349 | curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd); |
eb56c821 | 1350 | |
7202b81f SZ |
1351 | /* |
1352 | * It can happen that curl_multi_timeout returns a pathologically | |
1353 | * long timeout when curl_multi_fdset returns no file descriptors | |
1354 | * to read. See commit message for more details. | |
1355 | */ | |
1356 | if (max_fd < 0 && | |
1357 | (select_timeout.tv_sec > 0 || | |
1358 | select_timeout.tv_usec > 50000)) { | |
1359 | select_timeout.tv_sec = 0; | |
1360 | select_timeout.tv_usec = 50000; | |
1361 | } | |
1362 | ||
6f9dd67f | 1363 | select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout); |
29508e1e NH |
1364 | } |
1365 | } | |
1366 | #else | |
1367 | while (slot->in_use) { | |
1368 | slot->curl_result = curl_easy_perform(slot->curl); | |
1369 | finish_active_slot(slot); | |
1370 | } | |
1371 | #endif | |
1372 | } | |
1373 | ||
83e41e2e | 1374 | static void release_active_slot(struct active_request_slot *slot) |
53f31389 MW |
1375 | { |
1376 | closedown_active_slot(slot); | |
2abc848d | 1377 | if (slot->curl) { |
d8b6b84d | 1378 | xmulti_remove_handle(slot); |
2abc848d EW |
1379 | if (curl_session_count > min_curl_sessions) { |
1380 | curl_easy_cleanup(slot->curl); | |
1381 | slot->curl = NULL; | |
1382 | curl_session_count--; | |
1383 | } | |
53f31389 | 1384 | } |
b3ca4e4e | 1385 | #ifdef USE_CURL_MULTI |
53f31389 | 1386 | fill_active_slots(); |
b3ca4e4e | 1387 | #endif |
53f31389 MW |
1388 | } |
1389 | ||
29508e1e NH |
1390 | void finish_all_active_slots(void) |
1391 | { | |
1392 | struct active_request_slot *slot = active_queue_head; | |
1393 | ||
1394 | while (slot != NULL) | |
1395 | if (slot->in_use) { | |
1396 | run_active_slot(slot); | |
1397 | slot = active_queue_head; | |
1398 | } else { | |
1399 | slot = slot->next; | |
1400 | } | |
1401 | } | |
d7e92806 | 1402 | |
5ace994f | 1403 | /* Helpers for modifying and creating URLs */ |
d7e92806 MH |
1404 | static inline int needs_quote(int ch) |
1405 | { | |
1406 | if (((ch >= 'A') && (ch <= 'Z')) | |
1407 | || ((ch >= 'a') && (ch <= 'z')) | |
1408 | || ((ch >= '0') && (ch <= '9')) | |
1409 | || (ch == '/') | |
1410 | || (ch == '-') | |
1411 | || (ch == '.')) | |
1412 | return 0; | |
1413 | return 1; | |
1414 | } | |
1415 | ||
d7e92806 MH |
1416 | static char *quote_ref_url(const char *base, const char *ref) |
1417 | { | |
113106e0 | 1418 | struct strbuf buf = STRBUF_INIT; |
d7e92806 | 1419 | const char *cp; |
113106e0 | 1420 | int ch; |
d7e92806 | 1421 | |
5ace994f | 1422 | end_url_with_slash(&buf, base); |
113106e0 TRC |
1423 | |
1424 | for (cp = ref; (ch = *cp) != 0; cp++) | |
d7e92806 | 1425 | if (needs_quote(ch)) |
113106e0 | 1426 | strbuf_addf(&buf, "%%%02x", ch); |
d7e92806 | 1427 | else |
113106e0 | 1428 | strbuf_addch(&buf, *cp); |
d7e92806 | 1429 | |
113106e0 | 1430 | return strbuf_detach(&buf, NULL); |
d7e92806 MH |
1431 | } |
1432 | ||
5424bc55 TRC |
1433 | void append_remote_object_url(struct strbuf *buf, const char *url, |
1434 | const char *hex, | |
1435 | int only_two_digit_prefix) | |
1436 | { | |
800324c3 TRC |
1437 | end_url_with_slash(buf, url); |
1438 | ||
1439 | strbuf_addf(buf, "objects/%.*s/", 2, hex); | |
5424bc55 | 1440 | if (!only_two_digit_prefix) |
bc57b9c0 | 1441 | strbuf_addstr(buf, hex + 2); |
5424bc55 TRC |
1442 | } |
1443 | ||
1444 | char *get_remote_object_url(const char *url, const char *hex, | |
1445 | int only_two_digit_prefix) | |
1446 | { | |
1447 | struct strbuf buf = STRBUF_INIT; | |
1448 | append_remote_object_url(&buf, url, hex, only_two_digit_prefix); | |
1449 | return strbuf_detach(&buf, NULL); | |
1450 | } | |
1451 | ||
b90a3d7b | 1452 | static int handle_curl_result(struct slot_results *results) |
88097030 | 1453 | { |
6d052d78 JK |
1454 | /* |
1455 | * If we see a failing http code with CURLE_OK, we have turned off | |
1456 | * FAILONERROR (to keep the server's custom error response), and should | |
1457 | * translate the code into failure here. | |
50d34137 JK |
1458 | * |
1459 | * Likewise, if we see a redirect (30x code), that means we turned off | |
1460 | * redirect-following, and we should treat the result as an error. | |
6d052d78 JK |
1461 | */ |
1462 | if (results->curl_result == CURLE_OK && | |
50d34137 | 1463 | results->http_code >= 300) { |
6d052d78 JK |
1464 | results->curl_result = CURLE_HTTP_RETURNED_ERROR; |
1465 | /* | |
1466 | * Normally curl will already have put the "reason phrase" | |
1467 | * from the server into curl_errorstr; unfortunately without | |
1468 | * FAILONERROR it is lost, so we can give only the numeric | |
1469 | * status code. | |
1470 | */ | |
1a168e5c JK |
1471 | xsnprintf(curl_errorstr, sizeof(curl_errorstr), |
1472 | "The requested URL returned error: %ld", | |
1473 | results->http_code); | |
6d052d78 JK |
1474 | } |
1475 | ||
88097030 JK |
1476 | if (results->curl_result == CURLE_OK) { |
1477 | credential_approve(&http_auth); | |
372370f1 KF |
1478 | if (proxy_auth.password) |
1479 | credential_approve(&proxy_auth); | |
88097030 JK |
1480 | return HTTP_OK; |
1481 | } else if (missing_target(results)) | |
1482 | return HTTP_MISSING_TARGET; | |
1483 | else if (results->http_code == 401) { | |
1484 | if (http_auth.username && http_auth.password) { | |
1485 | credential_reject(&http_auth); | |
1486 | return HTTP_NOAUTH; | |
1487 | } else { | |
4dbe6646 | 1488 | #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY |
1489 | http_auth_methods &= ~CURLAUTH_GSSNEGOTIATE; | |
40a18fc7 | 1490 | if (results->auth_avail) { |
840398fe | 1491 | http_auth_methods &= results->auth_avail; |
40a18fc7 JK |
1492 | http_auth_methods_restricted = 1; |
1493 | } | |
4dbe6646 | 1494 | #endif |
88097030 JK |
1495 | return HTTP_REAUTH; |
1496 | } | |
1497 | } else { | |
372370f1 KF |
1498 | if (results->http_connectcode == 407) |
1499 | credential_reject(&proxy_auth); | |
3503e9ab | 1500 | #if LIBCURL_VERSION_NUM >= 0x070c00 |
88097030 JK |
1501 | if (!curl_errorstr[0]) |
1502 | strlcpy(curl_errorstr, | |
1503 | curl_easy_strerror(results->curl_result), | |
1504 | sizeof(curl_errorstr)); | |
3503e9ab | 1505 | #endif |
88097030 JK |
1506 | return HTTP_ERROR; |
1507 | } | |
1508 | } | |
1509 | ||
beed336c JK |
1510 | int run_one_slot(struct active_request_slot *slot, |
1511 | struct slot_results *results) | |
1512 | { | |
1513 | slot->results = results; | |
1514 | if (!start_active_slot(slot)) { | |
1a168e5c JK |
1515 | xsnprintf(curl_errorstr, sizeof(curl_errorstr), |
1516 | "failed to start HTTP request"); | |
beed336c JK |
1517 | return HTTP_START_FAILED; |
1518 | } | |
1519 | ||
1520 | run_active_slot(slot); | |
1521 | return handle_curl_result(results); | |
1522 | } | |
1523 | ||
8cb01e2f JS |
1524 | struct curl_slist *http_copy_default_headers(void) |
1525 | { | |
1526 | struct curl_slist *headers = NULL, *h; | |
1527 | ||
1528 | for (h = extra_http_headers; h; h = h->next) | |
1529 | headers = curl_slist_append(headers, h->data); | |
1530 | ||
1531 | return headers; | |
1532 | } | |
1533 | ||
132b70a2 JK |
1534 | static CURLcode curlinfo_strbuf(CURL *curl, CURLINFO info, struct strbuf *buf) |
1535 | { | |
1536 | char *ptr; | |
1537 | CURLcode ret; | |
1538 | ||
1539 | strbuf_reset(buf); | |
1540 | ret = curl_easy_getinfo(curl, info, &ptr); | |
1541 | if (!ret && ptr) | |
1542 | strbuf_addstr(buf, ptr); | |
1543 | return ret; | |
1544 | } | |
1545 | ||
e3131626 JK |
1546 | /* |
1547 | * Check for and extract a content-type parameter. "raw" | |
1548 | * should be positioned at the start of the potential | |
1549 | * parameter, with any whitespace already removed. | |
1550 | * | |
1551 | * "name" is the name of the parameter. The value is appended | |
1552 | * to "out". | |
1553 | */ | |
1554 | static int extract_param(const char *raw, const char *name, | |
1555 | struct strbuf *out) | |
1556 | { | |
1557 | size_t len = strlen(name); | |
1558 | ||
1559 | if (strncasecmp(raw, name, len)) | |
1560 | return -1; | |
1561 | raw += len; | |
1562 | ||
1563 | if (*raw != '=') | |
1564 | return -1; | |
1565 | raw++; | |
1566 | ||
f34a655d | 1567 | while (*raw && !isspace(*raw) && *raw != ';') |
e3131626 JK |
1568 | strbuf_addch(out, *raw++); |
1569 | return 0; | |
1570 | } | |
1571 | ||
bf197fd7 JK |
1572 | /* |
1573 | * Extract a normalized version of the content type, with any | |
1574 | * spaces suppressed, all letters lowercased, and no trailing ";" | |
1575 | * or parameters. | |
1576 | * | |
1577 | * Note that we will silently remove even invalid whitespace. For | |
1578 | * example, "text / plain" is specifically forbidden by RFC 2616, | |
1579 | * but "text/plain" is the only reasonable output, and this keeps | |
1580 | * our code simple. | |
1581 | * | |
e3131626 JK |
1582 | * If the "charset" argument is not NULL, store the value of any |
1583 | * charset parameter there. | |
1584 | * | |
bf197fd7 | 1585 | * Example: |
e3131626 | 1586 | * "TEXT/PLAIN; charset=utf-8" -> "text/plain", "utf-8" |
bf197fd7 JK |
1587 | * "text / plain" -> "text/plain" |
1588 | */ | |
e3131626 JK |
1589 | static void extract_content_type(struct strbuf *raw, struct strbuf *type, |
1590 | struct strbuf *charset) | |
bf197fd7 JK |
1591 | { |
1592 | const char *p; | |
1593 | ||
1594 | strbuf_reset(type); | |
1595 | strbuf_grow(type, raw->len); | |
1596 | for (p = raw->buf; *p; p++) { | |
1597 | if (isspace(*p)) | |
1598 | continue; | |
e3131626 JK |
1599 | if (*p == ';') { |
1600 | p++; | |
bf197fd7 | 1601 | break; |
e3131626 | 1602 | } |
bf197fd7 JK |
1603 | strbuf_addch(type, tolower(*p)); |
1604 | } | |
e3131626 JK |
1605 | |
1606 | if (!charset) | |
1607 | return; | |
1608 | ||
1609 | strbuf_reset(charset); | |
1610 | while (*p) { | |
f34a655d | 1611 | while (isspace(*p) || *p == ';') |
e3131626 JK |
1612 | p++; |
1613 | if (!extract_param(p, "charset", charset)) | |
1614 | return; | |
1615 | while (*p && !isspace(*p)) | |
1616 | p++; | |
1617 | } | |
c553fd1c JK |
1618 | |
1619 | if (!charset->len && starts_with(type->buf, "text/")) | |
1620 | strbuf_addstr(charset, "ISO-8859-1"); | |
bf197fd7 JK |
1621 | } |
1622 | ||
f18604bb YE |
1623 | static void write_accept_language(struct strbuf *buf) |
1624 | { | |
1625 | /* | |
1626 | * MAX_DECIMAL_PLACES must not be larger than 3. If it is larger than | |
1627 | * that, q-value will be smaller than 0.001, the minimum q-value the | |
1628 | * HTTP specification allows. See | |
1629 | * http://tools.ietf.org/html/rfc7231#section-5.3.1 for q-value. | |
1630 | */ | |
1631 | const int MAX_DECIMAL_PLACES = 3; | |
1632 | const int MAX_LANGUAGE_TAGS = 1000; | |
1633 | const int MAX_ACCEPT_LANGUAGE_HEADER_SIZE = 4000; | |
1634 | char **language_tags = NULL; | |
1635 | int num_langs = 0; | |
1636 | const char *s = get_preferred_languages(); | |
1637 | int i; | |
1638 | struct strbuf tag = STRBUF_INIT; | |
1639 | ||
1640 | /* Don't add Accept-Language header if no language is preferred. */ | |
1641 | if (!s) | |
1642 | return; | |
1643 | ||
1644 | /* | |
1645 | * Split the colon-separated string of preferred languages into | |
1646 | * language_tags array. | |
1647 | */ | |
1648 | do { | |
1649 | /* collect language tag */ | |
1650 | for (; *s && (isalnum(*s) || *s == '_'); s++) | |
1651 | strbuf_addch(&tag, *s == '_' ? '-' : *s); | |
1652 | ||
1653 | /* skip .codeset, @modifier and any other unnecessary parts */ | |
1654 | while (*s && *s != ':') | |
1655 | s++; | |
1656 | ||
1657 | if (tag.len) { | |
1658 | num_langs++; | |
1659 | REALLOC_ARRAY(language_tags, num_langs); | |
1660 | language_tags[num_langs - 1] = strbuf_detach(&tag, NULL); | |
1661 | if (num_langs >= MAX_LANGUAGE_TAGS - 1) /* -1 for '*' */ | |
1662 | break; | |
1663 | } | |
1664 | } while (*s++); | |
1665 | ||
1666 | /* write Accept-Language header into buf */ | |
1667 | if (num_langs) { | |
1668 | int last_buf_len = 0; | |
1669 | int max_q; | |
1670 | int decimal_places; | |
1671 | char q_format[32]; | |
1672 | ||
1673 | /* add '*' */ | |
1674 | REALLOC_ARRAY(language_tags, num_langs + 1); | |
1675 | language_tags[num_langs++] = "*"; /* it's OK; this won't be freed */ | |
1676 | ||
1677 | /* compute decimal_places */ | |
1678 | for (max_q = 1, decimal_places = 0; | |
1679 | max_q < num_langs && decimal_places <= MAX_DECIMAL_PLACES; | |
1680 | decimal_places++, max_q *= 10) | |
1681 | ; | |
1682 | ||
5096d490 | 1683 | xsnprintf(q_format, sizeof(q_format), ";q=0.%%0%dd", decimal_places); |
f18604bb YE |
1684 | |
1685 | strbuf_addstr(buf, "Accept-Language: "); | |
1686 | ||
1687 | for (i = 0; i < num_langs; i++) { | |
1688 | if (i > 0) | |
1689 | strbuf_addstr(buf, ", "); | |
1690 | ||
1691 | strbuf_addstr(buf, language_tags[i]); | |
1692 | ||
1693 | if (i > 0) | |
1694 | strbuf_addf(buf, q_format, max_q - i); | |
1695 | ||
1696 | if (buf->len > MAX_ACCEPT_LANGUAGE_HEADER_SIZE) { | |
1697 | strbuf_remove(buf, last_buf_len, buf->len - last_buf_len); | |
1698 | break; | |
1699 | } | |
1700 | ||
1701 | last_buf_len = buf->len; | |
1702 | } | |
1703 | } | |
1704 | ||
1705 | /* free language tags -- last one is a static '*' */ | |
1706 | for (i = 0; i < num_langs - 1; i++) | |
1707 | free(language_tags[i]); | |
1708 | free(language_tags); | |
1709 | } | |
1710 | ||
1711 | /* | |
1712 | * Get an Accept-Language header which indicates user's preferred languages. | |
1713 | * | |
1714 | * Examples: | |
1715 | * LANGUAGE= -> "" | |
1716 | * LANGUAGE=ko:en -> "Accept-Language: ko, en; q=0.9, *; q=0.1" | |
1717 | * LANGUAGE=ko_KR.UTF-8:sr@latin -> "Accept-Language: ko-KR, sr; q=0.9, *; q=0.1" | |
1718 | * LANGUAGE=ko LANG=en_US.UTF-8 -> "Accept-Language: ko, *; q=0.1" | |
1719 | * LANGUAGE= LANG=en_US.UTF-8 -> "Accept-Language: en-US, *; q=0.1" | |
1720 | * LANGUAGE= LANG=C -> "" | |
1721 | */ | |
1722 | static const char *get_accept_language(void) | |
1723 | { | |
1724 | if (!cached_accept_language) { | |
1725 | struct strbuf buf = STRBUF_INIT; | |
1726 | write_accept_language(&buf); | |
1727 | if (buf.len > 0) | |
1728 | cached_accept_language = strbuf_detach(&buf, NULL); | |
1729 | } | |
1730 | ||
1731 | return cached_accept_language; | |
1732 | } | |
1733 | ||
835c4d36 DT |
1734 | static void http_opt_request_remainder(CURL *curl, off_t pos) |
1735 | { | |
1736 | char buf[128]; | |
1737 | xsnprintf(buf, sizeof(buf), "%"PRIuMAX"-", (uintmax_t)pos); | |
1738 | curl_easy_setopt(curl, CURLOPT_RANGE, buf); | |
1739 | } | |
1740 | ||
e929cd20 MH |
1741 | /* http_request() targets */ |
1742 | #define HTTP_REQUEST_STRBUF 0 | |
1743 | #define HTTP_REQUEST_FILE 1 | |
1744 | ||
1bbcc224 JK |
1745 | static int http_request(const char *url, |
1746 | void *result, int target, | |
1747 | const struct http_get_options *options) | |
e929cd20 MH |
1748 | { |
1749 | struct active_request_slot *slot; | |
1750 | struct slot_results results; | |
8cb01e2f | 1751 | struct curl_slist *headers = http_copy_default_headers(); |
e929cd20 | 1752 | struct strbuf buf = STRBUF_INIT; |
f18604bb | 1753 | const char *accept_language; |
e929cd20 MH |
1754 | int ret; |
1755 | ||
1756 | slot = get_active_slot(); | |
e929cd20 MH |
1757 | curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); |
1758 | ||
1759 | if (result == NULL) { | |
1760 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1); | |
1761 | } else { | |
1762 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0); | |
1763 | curl_easy_setopt(slot->curl, CURLOPT_FILE, result); | |
1764 | ||
1765 | if (target == HTTP_REQUEST_FILE) { | |
f8117f55 | 1766 | off_t posn = ftello(result); |
e929cd20 MH |
1767 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, |
1768 | fwrite); | |
835c4d36 DT |
1769 | if (posn > 0) |
1770 | http_opt_request_remainder(slot->curl, posn); | |
e929cd20 MH |
1771 | } else |
1772 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, | |
1773 | fwrite_buffer); | |
1774 | } | |
1775 | ||
f18604bb YE |
1776 | accept_language = get_accept_language(); |
1777 | ||
1778 | if (accept_language) | |
1779 | headers = curl_slist_append(headers, accept_language); | |
1780 | ||
e929cd20 | 1781 | strbuf_addstr(&buf, "Pragma:"); |
1bbcc224 | 1782 | if (options && options->no_cache) |
e929cd20 | 1783 | strbuf_addstr(&buf, " no-cache"); |
1bbcc224 | 1784 | if (options && options->keep_error) |
6d052d78 | 1785 | curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0); |
50d34137 JK |
1786 | if (options && options->initial_request && |
1787 | http_follow_config == HTTP_FOLLOW_INITIAL) | |
1788 | curl_easy_setopt(slot->curl, CURLOPT_FOLLOWLOCATION, 1); | |
e929cd20 MH |
1789 | |
1790 | headers = curl_slist_append(headers, buf.buf); | |
1791 | ||
1792 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
1793 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers); | |
aa90b969 | 1794 | curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip"); |
e929cd20 | 1795 | |
beed336c | 1796 | ret = run_one_slot(slot, &results); |
e929cd20 | 1797 | |
bf197fd7 JK |
1798 | if (options && options->content_type) { |
1799 | struct strbuf raw = STRBUF_INIT; | |
1800 | curlinfo_strbuf(slot->curl, CURLINFO_CONTENT_TYPE, &raw); | |
e3131626 JK |
1801 | extract_content_type(&raw, options->content_type, |
1802 | options->charset); | |
bf197fd7 JK |
1803 | strbuf_release(&raw); |
1804 | } | |
4656bf47 | 1805 | |
78868962 JK |
1806 | if (options && options->effective_url) |
1807 | curlinfo_strbuf(slot->curl, CURLINFO_EFFECTIVE_URL, | |
1808 | options->effective_url); | |
4656bf47 | 1809 | |
e929cd20 MH |
1810 | curl_slist_free_all(headers); |
1811 | strbuf_release(&buf); | |
1812 | ||
1813 | return ret; | |
1814 | } | |
1815 | ||
c93c92f3 JK |
1816 | /* |
1817 | * Update the "base" url to a more appropriate value, as deduced by | |
1818 | * redirects seen when requesting a URL starting with "url". | |
1819 | * | |
1820 | * The "asked" parameter is a URL that we asked curl to access, and must begin | |
1821 | * with "base". | |
1822 | * | |
1823 | * The "got" parameter is the URL that curl reported to us as where we ended | |
1824 | * up. | |
1825 | * | |
1826 | * Returns 1 if we updated the base url, 0 otherwise. | |
1827 | * | |
1828 | * Our basic strategy is to compare "base" and "asked" to find the bits | |
1829 | * specific to our request. We then strip those bits off of "got" to yield the | |
1830 | * new base. So for example, if our base is "http://example.com/foo.git", | |
1831 | * and we ask for "http://example.com/foo.git/info/refs", we might end up | |
1832 | * with "https://other.example.com/foo.git/info/refs". We would want the | |
1833 | * new URL to become "https://other.example.com/foo.git". | |
1834 | * | |
1835 | * Note that this assumes a sane redirect scheme. It's entirely possible | |
1836 | * in the example above to end up at a URL that does not even end in | |
6628eb41 JK |
1837 | * "info/refs". In such a case we die. There's not much we can do, such a |
1838 | * scheme is unlikely to represent a real git repository, and failing to | |
1839 | * rewrite the base opens options for malicious redirects to do funny things. | |
c93c92f3 JK |
1840 | */ |
1841 | static int update_url_from_redirect(struct strbuf *base, | |
1842 | const char *asked, | |
1843 | const struct strbuf *got) | |
1844 | { | |
1845 | const char *tail; | |
986d7f4d | 1846 | size_t new_len; |
c93c92f3 JK |
1847 | |
1848 | if (!strcmp(asked, got->buf)) | |
1849 | return 0; | |
1850 | ||
de8118e1 | 1851 | if (!skip_prefix(asked, base->buf, &tail)) |
c93c92f3 JK |
1852 | die("BUG: update_url_from_redirect: %s is not a superset of %s", |
1853 | asked, base->buf); | |
1854 | ||
986d7f4d JK |
1855 | new_len = got->len; |
1856 | if (!strip_suffix_mem(got->buf, &new_len, tail)) | |
6628eb41 JK |
1857 | die(_("unable to update url base from redirection:\n" |
1858 | " asked for: %s\n" | |
1859 | " redirect: %s"), | |
1860 | asked, got->buf); | |
c93c92f3 JK |
1861 | |
1862 | strbuf_reset(base); | |
986d7f4d | 1863 | strbuf_add(base, got->buf, new_len); |
6628eb41 | 1864 | |
c93c92f3 JK |
1865 | return 1; |
1866 | } | |
1867 | ||
4656bf47 | 1868 | static int http_request_reauth(const char *url, |
4656bf47 | 1869 | void *result, int target, |
1bbcc224 | 1870 | struct http_get_options *options) |
8d677edc | 1871 | { |
1bbcc224 | 1872 | int ret = http_request(url, result, target, options); |
c93c92f3 | 1873 | |
8e27391a JT |
1874 | if (ret != HTTP_OK && ret != HTTP_REAUTH) |
1875 | return ret; | |
1876 | ||
c93c92f3 JK |
1877 | if (options && options->effective_url && options->base_url) { |
1878 | if (update_url_from_redirect(options->base_url, | |
1879 | url, options->effective_url)) { | |
1880 | credential_from_url(&http_auth, options->base_url->buf); | |
1881 | url = options->effective_url->buf; | |
1882 | } | |
1883 | } | |
1884 | ||
8d677edc JK |
1885 | if (ret != HTTP_REAUTH) |
1886 | return ret; | |
6d052d78 JK |
1887 | |
1888 | /* | |
1889 | * If we are using KEEP_ERROR, the previous request may have | |
1890 | * put cruft into our output stream; we should clear it out before | |
1891 | * making our next request. We only know how to do this for | |
1892 | * the strbuf case, but that is enough to satisfy current callers. | |
1893 | */ | |
1bbcc224 | 1894 | if (options && options->keep_error) { |
6d052d78 JK |
1895 | switch (target) { |
1896 | case HTTP_REQUEST_STRBUF: | |
1897 | strbuf_reset(result); | |
1898 | break; | |
1899 | default: | |
1900 | die("BUG: HTTP_KEEP_ERROR is only supported with strbufs"); | |
1901 | } | |
1902 | } | |
2501aff8 JK |
1903 | |
1904 | credential_fill(&http_auth); | |
1905 | ||
1bbcc224 | 1906 | return http_request(url, result, target, options); |
8d677edc JK |
1907 | } |
1908 | ||
4656bf47 | 1909 | int http_get_strbuf(const char *url, |
1bbcc224 JK |
1910 | struct strbuf *result, |
1911 | struct http_get_options *options) | |
e929cd20 | 1912 | { |
1bbcc224 | 1913 | return http_request_reauth(url, result, HTTP_REQUEST_STRBUF, options); |
e929cd20 MH |
1914 | } |
1915 | ||
83e41e2e | 1916 | /* |
a7793a74 | 1917 | * Downloads a URL and stores the result in the given file. |
83e41e2e JH |
1918 | * |
1919 | * If a previous interrupted download is detected (i.e. a previous temporary | |
1920 | * file is still around) the download is resumed. | |
1921 | */ | |
1bbcc224 JK |
1922 | static int http_get_file(const char *url, const char *filename, |
1923 | struct http_get_options *options) | |
e929cd20 MH |
1924 | { |
1925 | int ret; | |
1926 | struct strbuf tmpfile = STRBUF_INIT; | |
1927 | FILE *result; | |
1928 | ||
1929 | strbuf_addf(&tmpfile, "%s.temp", filename); | |
1930 | result = fopen(tmpfile.buf, "a"); | |
3d1fb769 | 1931 | if (!result) { |
e929cd20 MH |
1932 | error("Unable to open local file %s", tmpfile.buf); |
1933 | ret = HTTP_ERROR; | |
1934 | goto cleanup; | |
1935 | } | |
1936 | ||
1bbcc224 | 1937 | ret = http_request_reauth(url, result, HTTP_REQUEST_FILE, options); |
e929cd20 MH |
1938 | fclose(result); |
1939 | ||
cb5add58 | 1940 | if (ret == HTTP_OK && finalize_object_file(tmpfile.buf, filename)) |
e929cd20 MH |
1941 | ret = HTTP_ERROR; |
1942 | cleanup: | |
1943 | strbuf_release(&tmpfile); | |
1944 | return ret; | |
1945 | } | |
1946 | ||
c13b2633 | 1947 | int http_fetch_ref(const char *base, struct ref *ref) |
d7e92806 | 1948 | { |
1bbcc224 | 1949 | struct http_get_options options = {0}; |
d7e92806 MH |
1950 | char *url; |
1951 | struct strbuf buffer = STRBUF_INIT; | |
0d5896e1 | 1952 | int ret = -1; |
d7e92806 | 1953 | |
1bbcc224 JK |
1954 | options.no_cache = 1; |
1955 | ||
c13b2633 | 1956 | url = quote_ref_url(base, ref->name); |
1bbcc224 | 1957 | if (http_get_strbuf(url, &buffer, &options) == HTTP_OK) { |
0d5896e1 MH |
1958 | strbuf_rtrim(&buffer); |
1959 | if (buffer.len == 40) | |
f4e54d02 | 1960 | ret = get_oid_hex(buffer.buf, &ref->old_oid); |
59556548 | 1961 | else if (starts_with(buffer.buf, "ref: ")) { |
0d5896e1 MH |
1962 | ref->symref = xstrdup(buffer.buf + 5); |
1963 | ret = 0; | |
d7e92806 | 1964 | } |
d7e92806 MH |
1965 | } |
1966 | ||
1967 | strbuf_release(&buffer); | |
1968 | free(url); | |
1969 | return ret; | |
1970 | } | |
b8caac2b TRC |
1971 | |
1972 | /* Helpers for fetching packs */ | |
750ef425 | 1973 | static char *fetch_pack_index(unsigned char *sha1, const char *base_url) |
b8caac2b | 1974 | { |
750ef425 | 1975 | char *url, *tmp; |
b8caac2b | 1976 | struct strbuf buf = STRBUF_INIT; |
b8caac2b | 1977 | |
b8caac2b | 1978 | if (http_is_verbose) |
162eb5f8 | 1979 | fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1)); |
b8caac2b TRC |
1980 | |
1981 | end_url_with_slash(&buf, base_url); | |
162eb5f8 | 1982 | strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1)); |
b8caac2b TRC |
1983 | url = strbuf_detach(&buf, NULL); |
1984 | ||
750ef425 SP |
1985 | strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1)); |
1986 | tmp = strbuf_detach(&buf, NULL); | |
1987 | ||
70900eda | 1988 | if (http_get_file(url, tmp, NULL) != HTTP_OK) { |
82247e9b | 1989 | error("Unable to get pack index %s", url); |
6a83d902 | 1990 | FREE_AND_NULL(tmp); |
750ef425 | 1991 | } |
b8caac2b | 1992 | |
b8caac2b | 1993 | free(url); |
750ef425 | 1994 | return tmp; |
b8caac2b TRC |
1995 | } |
1996 | ||
1997 | static int fetch_and_setup_pack_index(struct packed_git **packs_head, | |
1998 | unsigned char *sha1, const char *base_url) | |
1999 | { | |
2000 | struct packed_git *new_pack; | |
750ef425 SP |
2001 | char *tmp_idx = NULL; |
2002 | int ret; | |
b8caac2b | 2003 | |
750ef425 | 2004 | if (has_pack_index(sha1)) { |
8b9c2dd4 | 2005 | new_pack = parse_pack_index(sha1, sha1_pack_index_name(sha1)); |
750ef425 SP |
2006 | if (!new_pack) |
2007 | return -1; /* parse_pack_index() already issued error message */ | |
2008 | goto add_pack; | |
2009 | } | |
2010 | ||
2011 | tmp_idx = fetch_pack_index(sha1, base_url); | |
2012 | if (!tmp_idx) | |
b8caac2b TRC |
2013 | return -1; |
2014 | ||
750ef425 SP |
2015 | new_pack = parse_pack_index(sha1, tmp_idx); |
2016 | if (!new_pack) { | |
2017 | unlink(tmp_idx); | |
2018 | free(tmp_idx); | |
2019 | ||
b8caac2b | 2020 | return -1; /* parse_pack_index() already issued error message */ |
750ef425 SP |
2021 | } |
2022 | ||
2023 | ret = verify_pack_index(new_pack); | |
2024 | if (!ret) { | |
2025 | close_pack_index(new_pack); | |
cb5add58 | 2026 | ret = finalize_object_file(tmp_idx, sha1_pack_index_name(sha1)); |
750ef425 SP |
2027 | } |
2028 | free(tmp_idx); | |
2029 | if (ret) | |
2030 | return -1; | |
2031 | ||
2032 | add_pack: | |
b8caac2b TRC |
2033 | new_pack->next = *packs_head; |
2034 | *packs_head = new_pack; | |
2035 | return 0; | |
2036 | } | |
2037 | ||
2038 | int http_get_info_packs(const char *base_url, struct packed_git **packs_head) | |
2039 | { | |
1bbcc224 | 2040 | struct http_get_options options = {0}; |
b8caac2b TRC |
2041 | int ret = 0, i = 0; |
2042 | char *url, *data; | |
2043 | struct strbuf buf = STRBUF_INIT; | |
2044 | unsigned char sha1[20]; | |
2045 | ||
2046 | end_url_with_slash(&buf, base_url); | |
2047 | strbuf_addstr(&buf, "objects/info/packs"); | |
2048 | url = strbuf_detach(&buf, NULL); | |
2049 | ||
1bbcc224 JK |
2050 | options.no_cache = 1; |
2051 | ret = http_get_strbuf(url, &buf, &options); | |
b8caac2b TRC |
2052 | if (ret != HTTP_OK) |
2053 | goto cleanup; | |
2054 | ||
2055 | data = buf.buf; | |
2056 | while (i < buf.len) { | |
2057 | switch (data[i]) { | |
2058 | case 'P': | |
2059 | i++; | |
2060 | if (i + 52 <= buf.len && | |
59556548 CC |
2061 | starts_with(data + i, " pack-") && |
2062 | starts_with(data + i + 46, ".pack\n")) { | |
b8caac2b TRC |
2063 | get_sha1_hex(data + i + 6, sha1); |
2064 | fetch_and_setup_pack_index(packs_head, sha1, | |
2065 | base_url); | |
2066 | i += 51; | |
2067 | break; | |
2068 | } | |
2069 | default: | |
2070 | while (i < buf.len && data[i] != '\n') | |
2071 | i++; | |
2072 | } | |
2073 | i++; | |
2074 | } | |
2075 | ||
2076 | cleanup: | |
2077 | free(url); | |
2078 | return ret; | |
2079 | } | |
2264dfa5 TRC |
2080 | |
2081 | void release_http_pack_request(struct http_pack_request *preq) | |
2082 | { | |
2083 | if (preq->packfile != NULL) { | |
2084 | fclose(preq->packfile); | |
2085 | preq->packfile = NULL; | |
2264dfa5 | 2086 | } |
2264dfa5 TRC |
2087 | preq->slot = NULL; |
2088 | free(preq->url); | |
826aed50 | 2089 | free(preq); |
2264dfa5 TRC |
2090 | } |
2091 | ||
2092 | int finish_http_pack_request(struct http_pack_request *preq) | |
2093 | { | |
2264dfa5 | 2094 | struct packed_git **lst; |
021ab6f0 | 2095 | struct packed_git *p = preq->target; |
fe72d420 | 2096 | char *tmp_idx; |
9ae97018 | 2097 | size_t len; |
d3180279 | 2098 | struct child_process ip = CHILD_PROCESS_INIT; |
2264dfa5 | 2099 | |
fe72d420 | 2100 | close_pack_index(p); |
2264dfa5 | 2101 | |
3065274c SP |
2102 | fclose(preq->packfile); |
2103 | preq->packfile = NULL; | |
2264dfa5 TRC |
2104 | |
2105 | lst = preq->lst; | |
021ab6f0 | 2106 | while (*lst != p) |
2264dfa5 TRC |
2107 | lst = &((*lst)->next); |
2108 | *lst = (*lst)->next; | |
2109 | ||
9ae97018 JK |
2110 | if (!strip_suffix(preq->tmpfile, ".pack.temp", &len)) |
2111 | die("BUG: pack tmpfile does not end in .pack.temp?"); | |
2112 | tmp_idx = xstrfmt("%.*s.idx.temp", (int)len, preq->tmpfile); | |
fe72d420 | 2113 | |
c7191fa5 RS |
2114 | argv_array_push(&ip.args, "index-pack"); |
2115 | argv_array_pushl(&ip.args, "-o", tmp_idx, NULL); | |
2116 | argv_array_push(&ip.args, preq->tmpfile); | |
fe72d420 SP |
2117 | ip.git_cmd = 1; |
2118 | ip.no_stdin = 1; | |
2119 | ip.no_stdout = 1; | |
2120 | ||
2121 | if (run_command(&ip)) { | |
2122 | unlink(preq->tmpfile); | |
2123 | unlink(tmp_idx); | |
2124 | free(tmp_idx); | |
2264dfa5 | 2125 | return -1; |
fe72d420 SP |
2126 | } |
2127 | ||
2128 | unlink(sha1_pack_index_name(p->sha1)); | |
2264dfa5 | 2129 | |
cb5add58 JH |
2130 | if (finalize_object_file(preq->tmpfile, sha1_pack_name(p->sha1)) |
2131 | || finalize_object_file(tmp_idx, sha1_pack_index_name(p->sha1))) { | |
fe72d420 | 2132 | free(tmp_idx); |
2264dfa5 | 2133 | return -1; |
fe72d420 | 2134 | } |
2264dfa5 | 2135 | |
fe72d420 SP |
2136 | install_packed_git(p); |
2137 | free(tmp_idx); | |
2264dfa5 TRC |
2138 | return 0; |
2139 | } | |
2140 | ||
2141 | struct http_pack_request *new_http_pack_request( | |
2142 | struct packed_git *target, const char *base_url) | |
2143 | { | |
f8117f55 | 2144 | off_t prev_posn = 0; |
2264dfa5 TRC |
2145 | struct strbuf buf = STRBUF_INIT; |
2146 | struct http_pack_request *preq; | |
2147 | ||
ec99c9a8 | 2148 | preq = xcalloc(1, sizeof(*preq)); |
2264dfa5 | 2149 | preq->target = target; |
2264dfa5 TRC |
2150 | |
2151 | end_url_with_slash(&buf, base_url); | |
2152 | strbuf_addf(&buf, "objects/pack/pack-%s.pack", | |
2153 | sha1_to_hex(target->sha1)); | |
bb99190e | 2154 | preq->url = strbuf_detach(&buf, NULL); |
2264dfa5 | 2155 | |
90d05713 TRC |
2156 | snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp", |
2157 | sha1_pack_name(target->sha1)); | |
2264dfa5 TRC |
2158 | preq->packfile = fopen(preq->tmpfile, "a"); |
2159 | if (!preq->packfile) { | |
2160 | error("Unable to open local file %s for pack", | |
2161 | preq->tmpfile); | |
2162 | goto abort; | |
2163 | } | |
2164 | ||
2165 | preq->slot = get_active_slot(); | |
2264dfa5 TRC |
2166 | curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile); |
2167 | curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
bb99190e | 2168 | curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url); |
2264dfa5 TRC |
2169 | curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER, |
2170 | no_pragma_header); | |
2171 | ||
2172 | /* | |
2173 | * If there is data present from a previous transfer attempt, | |
2174 | * resume where it left off | |
2175 | */ | |
f8117f55 | 2176 | prev_posn = ftello(preq->packfile); |
2264dfa5 TRC |
2177 | if (prev_posn>0) { |
2178 | if (http_is_verbose) | |
2179 | fprintf(stderr, | |
838ecf0b RJ |
2180 | "Resuming fetch of pack %s at byte %"PRIuMAX"\n", |
2181 | sha1_to_hex(target->sha1), (uintmax_t)prev_posn); | |
835c4d36 | 2182 | http_opt_request_remainder(preq->slot->curl, prev_posn); |
2264dfa5 TRC |
2183 | } |
2184 | ||
2185 | return preq; | |
2186 | ||
2187 | abort: | |
bb99190e | 2188 | free(preq->url); |
5ae9ebfd | 2189 | free(preq); |
2264dfa5 TRC |
2190 | return NULL; |
2191 | } | |
5424bc55 TRC |
2192 | |
2193 | /* Helpers for fetching objects (loose) */ | |
a04ff3ec | 2194 | static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb, |
5424bc55 TRC |
2195 | void *data) |
2196 | { | |
2197 | unsigned char expn[4096]; | |
2198 | size_t size = eltsize * nmemb; | |
2199 | int posn = 0; | |
17966c0a EW |
2200 | struct http_object_request *freq = data; |
2201 | struct active_request_slot *slot = freq->slot; | |
2202 | ||
2203 | if (slot) { | |
2204 | CURLcode c = curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, | |
2205 | &slot->http_code); | |
2206 | if (c != CURLE_OK) | |
2207 | die("BUG: curl_easy_getinfo for HTTP code failed: %s", | |
2208 | curl_easy_strerror(c)); | |
3680f16f | 2209 | if (slot->http_code >= 300) |
17966c0a EW |
2210 | return size; |
2211 | } | |
2212 | ||
5424bc55 TRC |
2213 | do { |
2214 | ssize_t retval = xwrite(freq->localfile, | |
2215 | (char *) ptr + posn, size - posn); | |
2216 | if (retval < 0) | |
2217 | return posn; | |
2218 | posn += retval; | |
2219 | } while (posn < size); | |
2220 | ||
2221 | freq->stream.avail_in = size; | |
a04ff3ec | 2222 | freq->stream.next_in = (void *)ptr; |
5424bc55 TRC |
2223 | do { |
2224 | freq->stream.next_out = expn; | |
2225 | freq->stream.avail_out = sizeof(expn); | |
2226 | freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH); | |
2227 | git_SHA1_Update(&freq->c, expn, | |
2228 | sizeof(expn) - freq->stream.avail_out); | |
2229 | } while (freq->stream.avail_in && freq->zret == Z_OK); | |
5424bc55 TRC |
2230 | return size; |
2231 | } | |
2232 | ||
2233 | struct http_object_request *new_http_object_request(const char *base_url, | |
2234 | unsigned char *sha1) | |
2235 | { | |
2236 | char *hex = sha1_to_hex(sha1); | |
ea657730 | 2237 | struct strbuf filename = STRBUF_INIT; |
5424bc55 | 2238 | char prevfile[PATH_MAX]; |
5424bc55 | 2239 | int prevlocal; |
a04ff3ec | 2240 | char prev_buf[PREV_BUF_SIZE]; |
5424bc55 | 2241 | ssize_t prev_read = 0; |
f8117f55 | 2242 | off_t prev_posn = 0; |
5424bc55 TRC |
2243 | struct http_object_request *freq; |
2244 | ||
ec99c9a8 | 2245 | freq = xcalloc(1, sizeof(*freq)); |
5424bc55 TRC |
2246 | hashcpy(freq->sha1, sha1); |
2247 | freq->localfile = -1; | |
2248 | ||
ea657730 | 2249 | sha1_file_name(&filename, sha1); |
5424bc55 | 2250 | snprintf(freq->tmpfile, sizeof(freq->tmpfile), |
ea657730 | 2251 | "%s.temp", filename.buf); |
5424bc55 | 2252 | |
ea657730 | 2253 | snprintf(prevfile, sizeof(prevfile), "%s.prev", filename.buf); |
5424bc55 TRC |
2254 | unlink_or_warn(prevfile); |
2255 | rename(freq->tmpfile, prevfile); | |
2256 | unlink_or_warn(freq->tmpfile); | |
ea657730 | 2257 | strbuf_release(&filename); |
5424bc55 TRC |
2258 | |
2259 | if (freq->localfile != -1) | |
2260 | error("fd leakage in start: %d", freq->localfile); | |
2261 | freq->localfile = open(freq->tmpfile, | |
2262 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
2263 | /* | |
2264 | * This could have failed due to the "lazy directory creation"; | |
2265 | * try to mkdir the last path component. | |
2266 | */ | |
2267 | if (freq->localfile < 0 && errno == ENOENT) { | |
2268 | char *dir = strrchr(freq->tmpfile, '/'); | |
2269 | if (dir) { | |
2270 | *dir = 0; | |
2271 | mkdir(freq->tmpfile, 0777); | |
2272 | *dir = '/'; | |
2273 | } | |
2274 | freq->localfile = open(freq->tmpfile, | |
2275 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
2276 | } | |
2277 | ||
2278 | if (freq->localfile < 0) { | |
d2e255ee | 2279 | error_errno("Couldn't create temporary file %s", freq->tmpfile); |
5424bc55 TRC |
2280 | goto abort; |
2281 | } | |
2282 | ||
5424bc55 TRC |
2283 | git_inflate_init(&freq->stream); |
2284 | ||
2285 | git_SHA1_Init(&freq->c); | |
2286 | ||
bb99190e | 2287 | freq->url = get_remote_object_url(base_url, hex, 0); |
5424bc55 TRC |
2288 | |
2289 | /* | |
2290 | * If a previous temp file is present, process what was already | |
2291 | * fetched. | |
2292 | */ | |
2293 | prevlocal = open(prevfile, O_RDONLY); | |
2294 | if (prevlocal != -1) { | |
2295 | do { | |
2296 | prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE); | |
2297 | if (prev_read>0) { | |
2298 | if (fwrite_sha1_file(prev_buf, | |
2299 | 1, | |
2300 | prev_read, | |
2301 | freq) == prev_read) { | |
2302 | prev_posn += prev_read; | |
2303 | } else { | |
2304 | prev_read = -1; | |
2305 | } | |
2306 | } | |
2307 | } while (prev_read > 0); | |
2308 | close(prevlocal); | |
2309 | } | |
2310 | unlink_or_warn(prevfile); | |
2311 | ||
2312 | /* | |
2313 | * Reset inflate/SHA1 if there was an error reading the previous temp | |
2314 | * file; also rewind to the beginning of the local file. | |
2315 | */ | |
2316 | if (prev_read == -1) { | |
2317 | memset(&freq->stream, 0, sizeof(freq->stream)); | |
2318 | git_inflate_init(&freq->stream); | |
2319 | git_SHA1_Init(&freq->c); | |
2320 | if (prev_posn>0) { | |
2321 | prev_posn = 0; | |
2322 | lseek(freq->localfile, 0, SEEK_SET); | |
0c4f21e4 | 2323 | if (ftruncate(freq->localfile, 0) < 0) { |
d2e255ee NTND |
2324 | error_errno("Couldn't truncate temporary file %s", |
2325 | freq->tmpfile); | |
0c4f21e4 JL |
2326 | goto abort; |
2327 | } | |
5424bc55 TRC |
2328 | } |
2329 | } | |
2330 | ||
2331 | freq->slot = get_active_slot(); | |
2332 | ||
2333 | curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq); | |
17966c0a | 2334 | curl_easy_setopt(freq->slot->curl, CURLOPT_FAILONERROR, 0); |
5424bc55 TRC |
2335 | curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); |
2336 | curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr); | |
bb99190e | 2337 | curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url); |
5424bc55 TRC |
2338 | curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
2339 | ||
2340 | /* | |
2341 | * If we have successfully processed data from a previous fetch | |
2342 | * attempt, only fetch the data we don't already have. | |
2343 | */ | |
2344 | if (prev_posn>0) { | |
2345 | if (http_is_verbose) | |
2346 | fprintf(stderr, | |
838ecf0b RJ |
2347 | "Resuming fetch of object %s at byte %"PRIuMAX"\n", |
2348 | hex, (uintmax_t)prev_posn); | |
835c4d36 | 2349 | http_opt_request_remainder(freq->slot->curl, prev_posn); |
5424bc55 TRC |
2350 | } |
2351 | ||
2352 | return freq; | |
2353 | ||
5424bc55 | 2354 | abort: |
bb99190e | 2355 | free(freq->url); |
5424bc55 TRC |
2356 | free(freq); |
2357 | return NULL; | |
2358 | } | |
2359 | ||
2360 | void process_http_object_request(struct http_object_request *freq) | |
2361 | { | |
2362 | if (freq->slot == NULL) | |
2363 | return; | |
2364 | freq->curl_result = freq->slot->curl_result; | |
2365 | freq->http_code = freq->slot->http_code; | |
2366 | freq->slot = NULL; | |
2367 | } | |
2368 | ||
2369 | int finish_http_object_request(struct http_object_request *freq) | |
2370 | { | |
2371 | struct stat st; | |
ea657730 | 2372 | struct strbuf filename = STRBUF_INIT; |
5424bc55 TRC |
2373 | |
2374 | close(freq->localfile); | |
2375 | freq->localfile = -1; | |
2376 | ||
2377 | process_http_object_request(freq); | |
2378 | ||
2379 | if (freq->http_code == 416) { | |
bd757c18 | 2380 | warning("requested range invalid; we may already have all the data."); |
5424bc55 TRC |
2381 | } else if (freq->curl_result != CURLE_OK) { |
2382 | if (stat(freq->tmpfile, &st) == 0) | |
2383 | if (st.st_size == 0) | |
2384 | unlink_or_warn(freq->tmpfile); | |
2385 | return -1; | |
2386 | } | |
2387 | ||
2388 | git_inflate_end(&freq->stream); | |
2389 | git_SHA1_Final(freq->real_sha1, &freq->c); | |
2390 | if (freq->zret != Z_STREAM_END) { | |
2391 | unlink_or_warn(freq->tmpfile); | |
2392 | return -1; | |
2393 | } | |
2394 | if (hashcmp(freq->sha1, freq->real_sha1)) { | |
2395 | unlink_or_warn(freq->tmpfile); | |
2396 | return -1; | |
2397 | } | |
ea657730 CC |
2398 | |
2399 | sha1_file_name(&filename, freq->sha1); | |
2400 | freq->rename = finalize_object_file(freq->tmpfile, filename.buf); | |
2401 | strbuf_release(&filename); | |
5424bc55 TRC |
2402 | |
2403 | return freq->rename; | |
2404 | } | |
2405 | ||
2406 | void abort_http_object_request(struct http_object_request *freq) | |
2407 | { | |
2408 | unlink_or_warn(freq->tmpfile); | |
2409 | ||
2410 | release_http_object_request(freq); | |
2411 | } | |
2412 | ||
2413 | void release_http_object_request(struct http_object_request *freq) | |
2414 | { | |
2415 | if (freq->localfile != -1) { | |
2416 | close(freq->localfile); | |
2417 | freq->localfile = -1; | |
2418 | } | |
2419 | if (freq->url != NULL) { | |
6a83d902 | 2420 | FREE_AND_NULL(freq->url); |
5424bc55 | 2421 | } |
4b9fa0e3 TRC |
2422 | if (freq->slot != NULL) { |
2423 | freq->slot->callback_func = NULL; | |
2424 | freq->slot->callback_data = NULL; | |
2425 | release_active_slot(freq->slot); | |
2426 | freq->slot = NULL; | |
2427 | } | |
5424bc55 | 2428 | } |