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Merge branch 'nd/remote-plural-ours-plus-theirs'
[git/gitweb.git] / http.c
blob6fe74d5eeafa0566cc7f19c8024ed0c82b55db77
1 #include "git-compat-util.h"
2 #include "http.h"
3 #include "pack.h"
4 #include "sideband.h"
5 #include "run-command.h"
6 #include "url.h"
7 #include "urlmatch.h"
8 #include "credential.h"
9 #include "version.h"
10 #include "pkt-line.h"
11 #include "gettext.h"
12 #include "transport.h"
13
14 #if LIBCURL_VERSION_NUM >= 0x070a08
15 long int git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
16 #else
17 long int git_curl_ipresolve;
18 #endif
19 int active_requests;
20 int http_is_verbose;
21 size_t http_post_buffer = 16 * LARGE_PACKET_MAX;
22
23 #if LIBCURL_VERSION_NUM >= 0x070a06
24 #define LIBCURL_CAN_HANDLE_AUTH_ANY
25 #endif
26
27 static int min_curl_sessions = 1;
28 static int curl_session_count;
29 #ifdef USE_CURL_MULTI
30 static int max_requests = -1;
31 static CURLM *curlm;
32 #endif
33 #ifndef NO_CURL_EASY_DUPHANDLE
34 static CURL *curl_default;
35 #endif
36
37 #define PREV_BUF_SIZE 4096
38
39 char curl_errorstr[CURL_ERROR_SIZE];
40
41 static int curl_ssl_verify = -1;
42 static int curl_ssl_try;
43 static const char *ssl_cert;
44 static const char *ssl_cipherlist;
45 static const char *ssl_version;
46 static struct {
47 const char *name;
48 long ssl_version;
49 } sslversions[] = {
50 { "sslv2", CURL_SSLVERSION_SSLv2 },
51 { "sslv3", CURL_SSLVERSION_SSLv3 },
52 { "tlsv1", CURL_SSLVERSION_TLSv1 },
53 #if LIBCURL_VERSION_NUM >= 0x072200
54 { "tlsv1.0", CURL_SSLVERSION_TLSv1_0 },
55 { "tlsv1.1", CURL_SSLVERSION_TLSv1_1 },
56 { "tlsv1.2", CURL_SSLVERSION_TLSv1_2 },
57 #endif
58 };
59 #if LIBCURL_VERSION_NUM >= 0x070903
60 static const char *ssl_key;
61 #endif
62 #if LIBCURL_VERSION_NUM >= 0x070908
63 static const char *ssl_capath;
64 #endif
65 #if LIBCURL_VERSION_NUM >= 0x072c00
66 static const char *ssl_pinnedkey;
67 #endif
68 static const char *ssl_cainfo;
69 static long curl_low_speed_limit = -1;
70 static long curl_low_speed_time = -1;
71 static int curl_ftp_no_epsv;
72 static const char *curl_http_proxy;
73 static const char *curl_no_proxy;
74 static const char *http_proxy_authmethod;
75 static struct {
76 const char *name;
77 long curlauth_param;
78 } proxy_authmethods[] = {
79 { "basic", CURLAUTH_BASIC },
80 { "digest", CURLAUTH_DIGEST },
81 { "negotiate", CURLAUTH_GSSNEGOTIATE },
82 { "ntlm", CURLAUTH_NTLM },
83 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
84 { "anyauth", CURLAUTH_ANY },
85 #endif
86 /*
87 * CURLAUTH_DIGEST_IE has no corresponding command-line option in
88 * curl(1) and is not included in CURLAUTH_ANY, so we leave it out
89 * here, too
90 */
91 };
92 static struct credential proxy_auth = CREDENTIAL_INIT;
93 static const char *curl_proxyuserpwd;
94 static const char *curl_cookie_file;
95 static int curl_save_cookies;
96 struct credential http_auth = CREDENTIAL_INIT;
97 static int http_proactive_auth;
98 static const char *user_agent;
99 static int curl_empty_auth;
100
101 #if LIBCURL_VERSION_NUM >= 0x071700
102 /* Use CURLOPT_KEYPASSWD as is */
103 #elif LIBCURL_VERSION_NUM >= 0x070903
104 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
105 #else
106 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
107 #endif
108
109 static struct credential cert_auth = CREDENTIAL_INIT;
110 static int ssl_cert_password_required;
111 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
112 static unsigned long http_auth_methods = CURLAUTH_ANY;
113 #endif
114
115 static struct curl_slist *pragma_header;
116 static struct curl_slist *no_pragma_header;
117 static struct curl_slist *extra_http_headers;
118
119 static struct active_request_slot *active_queue_head;
120
121 static char *cached_accept_language;
122
123 size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
124 {
125 size_t size = eltsize * nmemb;
126 struct buffer *buffer = buffer_;
127
128 if (size > buffer->buf.len - buffer->posn)
129 size = buffer->buf.len - buffer->posn;
130 memcpy(ptr, buffer->buf.buf + buffer->posn, size);
131 buffer->posn += size;
132
133 return size;
134 }
135
136 #ifndef NO_CURL_IOCTL
137 curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp)
138 {
139 struct buffer *buffer = clientp;
140
141 switch (cmd) {
142 case CURLIOCMD_NOP:
143 return CURLIOE_OK;
144
145 case CURLIOCMD_RESTARTREAD:
146 buffer->posn = 0;
147 return CURLIOE_OK;
148
149 default:
150 return CURLIOE_UNKNOWNCMD;
151 }
152 }
153 #endif
154
155 size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
156 {
157 size_t size = eltsize * nmemb;
158 struct strbuf *buffer = buffer_;
159
160 strbuf_add(buffer, ptr, size);
161 return size;
162 }
163
164 size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf)
165 {
166 return eltsize * nmemb;
167 }
168
169 static void closedown_active_slot(struct active_request_slot *slot)
170 {
171 active_requests--;
172 slot->in_use = 0;
173 }
174
175 static void finish_active_slot(struct active_request_slot *slot)
176 {
177 closedown_active_slot(slot);
178 curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
179
180 if (slot->finished != NULL)
181 (*slot->finished) = 1;
182
183 /* Store slot results so they can be read after the slot is reused */
184 if (slot->results != NULL) {
185 slot->results->curl_result = slot->curl_result;
186 slot->results->http_code = slot->http_code;
187 #if LIBCURL_VERSION_NUM >= 0x070a08
188 curl_easy_getinfo(slot->curl, CURLINFO_HTTPAUTH_AVAIL,
189 &slot->results->auth_avail);
190 #else
191 slot->results->auth_avail = 0;
192 #endif
193
194 curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CONNECTCODE,
195 &slot->results->http_connectcode);
196 }
197
198 /* Run callback if appropriate */
199 if (slot->callback_func != NULL)
200 slot->callback_func(slot->callback_data);
201 }
202
203 #ifdef USE_CURL_MULTI
204 static void process_curl_messages(void)
205 {
206 int num_messages;
207 struct active_request_slot *slot;
208 CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages);
209
210 while (curl_message != NULL) {
211 if (curl_message->msg == CURLMSG_DONE) {
212 int curl_result = curl_message->data.result;
213 slot = active_queue_head;
214 while (slot != NULL &&
215 slot->curl != curl_message->easy_handle)
216 slot = slot->next;
217 if (slot != NULL) {
218 curl_multi_remove_handle(curlm, slot->curl);
219 slot->curl_result = curl_result;
220 finish_active_slot(slot);
221 } else {
222 fprintf(stderr, "Received DONE message for unknown request!\n");
223 }
224 } else {
225 fprintf(stderr, "Unknown CURL message received: %d\n",
226 (int)curl_message->msg);
227 }
228 curl_message = curl_multi_info_read(curlm, &num_messages);
229 }
230 }
231 #endif
232
233 static int http_options(const char *var, const char *value, void *cb)
234 {
235 if (!strcmp("http.sslverify", var)) {
236 curl_ssl_verify = git_config_bool(var, value);
237 return 0;
238 }
239 if (!strcmp("http.sslcipherlist", var))
240 return git_config_string(&ssl_cipherlist, var, value);
241 if (!strcmp("http.sslversion", var))
242 return git_config_string(&ssl_version, var, value);
243 if (!strcmp("http.sslcert", var))
244 return git_config_string(&ssl_cert, var, value);
245 #if LIBCURL_VERSION_NUM >= 0x070903
246 if (!strcmp("http.sslkey", var))
247 return git_config_string(&ssl_key, var, value);
248 #endif
249 #if LIBCURL_VERSION_NUM >= 0x070908
250 if (!strcmp("http.sslcapath", var))
251 return git_config_pathname(&ssl_capath, var, value);
252 #endif
253 if (!strcmp("http.sslcainfo", var))
254 return git_config_pathname(&ssl_cainfo, var, value);
255 if (!strcmp("http.sslcertpasswordprotected", var)) {
256 ssl_cert_password_required = git_config_bool(var, value);
257 return 0;
258 }
259 if (!strcmp("http.ssltry", var)) {
260 curl_ssl_try = git_config_bool(var, value);
261 return 0;
262 }
263 if (!strcmp("http.minsessions", var)) {
264 min_curl_sessions = git_config_int(var, value);
265 #ifndef USE_CURL_MULTI
266 if (min_curl_sessions > 1)
267 min_curl_sessions = 1;
268 #endif
269 return 0;
270 }
271 #ifdef USE_CURL_MULTI
272 if (!strcmp("http.maxrequests", var)) {
273 max_requests = git_config_int(var, value);
274 return 0;
275 }
276 #endif
277 if (!strcmp("http.lowspeedlimit", var)) {
278 curl_low_speed_limit = (long)git_config_int(var, value);
279 return 0;
280 }
281 if (!strcmp("http.lowspeedtime", var)) {
282 curl_low_speed_time = (long)git_config_int(var, value);
283 return 0;
284 }
285
286 if (!strcmp("http.noepsv", var)) {
287 curl_ftp_no_epsv = git_config_bool(var, value);
288 return 0;
289 }
290 if (!strcmp("http.proxy", var))
291 return git_config_string(&curl_http_proxy, var, value);
292
293 if (!strcmp("http.proxyauthmethod", var))
294 return git_config_string(&http_proxy_authmethod, var, value);
295
296 if (!strcmp("http.cookiefile", var))
297 return git_config_pathname(&curl_cookie_file, var, value);
298 if (!strcmp("http.savecookies", var)) {
299 curl_save_cookies = git_config_bool(var, value);
300 return 0;
301 }
302
303 if (!strcmp("http.postbuffer", var)) {
304 http_post_buffer = git_config_int(var, value);
305 if (http_post_buffer < LARGE_PACKET_MAX)
306 http_post_buffer = LARGE_PACKET_MAX;
307 return 0;
308 }
309
310 if (!strcmp("http.useragent", var))
311 return git_config_string(&user_agent, var, value);
312
313 if (!strcmp("http.emptyauth", var)) {
314 curl_empty_auth = git_config_bool(var, value);
315 return 0;
316 }
317
318 if (!strcmp("http.pinnedpubkey", var)) {
319 #if LIBCURL_VERSION_NUM >= 0x072c00
320 return git_config_pathname(&ssl_pinnedkey, var, value);
321 #else
322 warning(_("Public key pinning not supported with cURL < 7.44.0"));
323 return 0;
324 #endif
325 }
326
327 if (!strcmp("http.extraheader", var)) {
328 if (!value) {
329 return config_error_nonbool(var);
330 } else if (!*value) {
331 curl_slist_free_all(extra_http_headers);
332 extra_http_headers = NULL;
333 } else {
334 extra_http_headers =
335 curl_slist_append(extra_http_headers, value);
336 }
337 return 0;
338 }
339
340 /* Fall back on the default ones */
341 return git_default_config(var, value, cb);
342 }
343
344 static void init_curl_http_auth(CURL *result)
345 {
346 if (!http_auth.username) {
347 if (curl_empty_auth)
348 curl_easy_setopt(result, CURLOPT_USERPWD, ":");
349 return;
350 }
351
352 credential_fill(&http_auth);
353
354 #if LIBCURL_VERSION_NUM >= 0x071301
355 curl_easy_setopt(result, CURLOPT_USERNAME, http_auth.username);
356 curl_easy_setopt(result, CURLOPT_PASSWORD, http_auth.password);
357 #else
358 {
359 static struct strbuf up = STRBUF_INIT;
360 /*
361 * Note that we assume we only ever have a single set of
362 * credentials in a given program run, so we do not have
363 * to worry about updating this buffer, only setting its
364 * initial value.
365 */
366 if (!up.len)
367 strbuf_addf(&up, "%s:%s",
368 http_auth.username, http_auth.password);
369 curl_easy_setopt(result, CURLOPT_USERPWD, up.buf);
370 }
371 #endif
372 }
373
374 /* *var must be free-able */
375 static void var_override(const char **var, char *value)
376 {
377 if (value) {
378 free((void *)*var);
379 *var = xstrdup(value);
380 }
381 }
382
383 static void set_proxyauth_name_password(CURL *result)
384 {
385 #if LIBCURL_VERSION_NUM >= 0x071301
386 curl_easy_setopt(result, CURLOPT_PROXYUSERNAME,
387 proxy_auth.username);
388 curl_easy_setopt(result, CURLOPT_PROXYPASSWORD,
389 proxy_auth.password);
390 #else
391 struct strbuf s = STRBUF_INIT;
392
393 strbuf_addstr_urlencode(&s, proxy_auth.username, 1);
394 strbuf_addch(&s, ':');
395 strbuf_addstr_urlencode(&s, proxy_auth.password, 1);
396 curl_proxyuserpwd = strbuf_detach(&s, NULL);
397 curl_easy_setopt(result, CURLOPT_PROXYUSERPWD, curl_proxyuserpwd);
398 #endif
399 }
400
401 static void init_curl_proxy_auth(CURL *result)
402 {
403 if (proxy_auth.username) {
404 if (!proxy_auth.password)
405 credential_fill(&proxy_auth);
406 set_proxyauth_name_password(result);
407 }
408
409 var_override(&http_proxy_authmethod, getenv("GIT_HTTP_PROXY_AUTHMETHOD"));
410
411 #if LIBCURL_VERSION_NUM >= 0x070a07 /* CURLOPT_PROXYAUTH and CURLAUTH_ANY */
412 if (http_proxy_authmethod) {
413 int i;
414 for (i = 0; i < ARRAY_SIZE(proxy_authmethods); i++) {
415 if (!strcmp(http_proxy_authmethod, proxy_authmethods[i].name)) {
416 curl_easy_setopt(result, CURLOPT_PROXYAUTH,
417 proxy_authmethods[i].curlauth_param);
418 break;
419 }
420 }
421 if (i == ARRAY_SIZE(proxy_authmethods)) {
422 warning("unsupported proxy authentication method %s: using anyauth",
423 http_proxy_authmethod);
424 curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
425 }
426 }
427 else
428 curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
429 #endif
430 }
431
432 static int has_cert_password(void)
433 {
434 if (ssl_cert == NULL || ssl_cert_password_required != 1)
435 return 0;
436 if (!cert_auth.password) {
437 cert_auth.protocol = xstrdup("cert");
438 cert_auth.username = xstrdup("");
439 cert_auth.path = xstrdup(ssl_cert);
440 credential_fill(&cert_auth);
441 }
442 return 1;
443 }
444
445 #if LIBCURL_VERSION_NUM >= 0x071900
446 static void set_curl_keepalive(CURL *c)
447 {
448 curl_easy_setopt(c, CURLOPT_TCP_KEEPALIVE, 1);
449 }
450
451 #elif LIBCURL_VERSION_NUM >= 0x071000
452 static int sockopt_callback(void *client, curl_socket_t fd, curlsocktype type)
453 {
454 int ka = 1;
455 int rc;
456 socklen_t len = (socklen_t)sizeof(ka);
457
458 if (type != CURLSOCKTYPE_IPCXN)
459 return 0;
460
461 rc = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&ka, len);
462 if (rc < 0)
463 warning("unable to set SO_KEEPALIVE on socket %s",
464 strerror(errno));
465
466 return 0; /* CURL_SOCKOPT_OK only exists since curl 7.21.5 */
467 }
468
469 static void set_curl_keepalive(CURL *c)
470 {
471 curl_easy_setopt(c, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
472 }
473
474 #else
475 static void set_curl_keepalive(CURL *c)
476 {
477 /* not supported on older curl versions */
478 }
479 #endif
480
481 static CURL *get_curl_handle(void)
482 {
483 CURL *result = curl_easy_init();
484 long allowed_protocols = 0;
485
486 if (!result)
487 die("curl_easy_init failed");
488
489 if (!curl_ssl_verify) {
490 curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0);
491 curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0);
492 } else {
493 /* Verify authenticity of the peer's certificate */
494 curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1);
495 /* The name in the cert must match whom we tried to connect */
496 curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2);
497 }
498
499 #if LIBCURL_VERSION_NUM >= 0x070907
500 curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
501 #endif
502 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
503 curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
504 #endif
505
506 if (http_proactive_auth)
507 init_curl_http_auth(result);
508
509 if (getenv("GIT_SSL_VERSION"))
510 ssl_version = getenv("GIT_SSL_VERSION");
511 if (ssl_version && *ssl_version) {
512 int i;
513 for (i = 0; i < ARRAY_SIZE(sslversions); i++) {
514 if (!strcmp(ssl_version, sslversions[i].name)) {
515 curl_easy_setopt(result, CURLOPT_SSLVERSION,
516 sslversions[i].ssl_version);
517 break;
518 }
519 }
520 if (i == ARRAY_SIZE(sslversions))
521 warning("unsupported ssl version %s: using default",
522 ssl_version);
523 }
524
525 if (getenv("GIT_SSL_CIPHER_LIST"))
526 ssl_cipherlist = getenv("GIT_SSL_CIPHER_LIST");
527 if (ssl_cipherlist != NULL && *ssl_cipherlist)
528 curl_easy_setopt(result, CURLOPT_SSL_CIPHER_LIST,
529 ssl_cipherlist);
530
531 if (ssl_cert != NULL)
532 curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
533 if (has_cert_password())
534 curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password);
535 #if LIBCURL_VERSION_NUM >= 0x070903
536 if (ssl_key != NULL)
537 curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key);
538 #endif
539 #if LIBCURL_VERSION_NUM >= 0x070908
540 if (ssl_capath != NULL)
541 curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath);
542 #endif
543 #if LIBCURL_VERSION_NUM >= 0x072c00
544 if (ssl_pinnedkey != NULL)
545 curl_easy_setopt(result, CURLOPT_PINNEDPUBLICKEY, ssl_pinnedkey);
546 #endif
547 if (ssl_cainfo != NULL)
548 curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo);
549
550 if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) {
551 curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT,
552 curl_low_speed_limit);
553 curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME,
554 curl_low_speed_time);
555 }
556
557 curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1);
558 curl_easy_setopt(result, CURLOPT_MAXREDIRS, 20);
559 #if LIBCURL_VERSION_NUM >= 0x071301
560 curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
561 #elif LIBCURL_VERSION_NUM >= 0x071101
562 curl_easy_setopt(result, CURLOPT_POST301, 1);
563 #endif
564 #if LIBCURL_VERSION_NUM >= 0x071304
565 if (is_transport_allowed("http"))
566 allowed_protocols |= CURLPROTO_HTTP;
567 if (is_transport_allowed("https"))
568 allowed_protocols |= CURLPROTO_HTTPS;
569 if (is_transport_allowed("ftp"))
570 allowed_protocols |= CURLPROTO_FTP;
571 if (is_transport_allowed("ftps"))
572 allowed_protocols |= CURLPROTO_FTPS;
573 curl_easy_setopt(result, CURLOPT_REDIR_PROTOCOLS, allowed_protocols);
574 #else
575 if (transport_restrict_protocols())
576 warning("protocol restrictions not applied to curl redirects because\n"
577 "your curl version is too old (>= 7.19.4)");
578 #endif
579
580 if (getenv("GIT_CURL_VERBOSE"))
581 curl_easy_setopt(result, CURLOPT_VERBOSE, 1);
582
583 curl_easy_setopt(result, CURLOPT_USERAGENT,
584 user_agent ? user_agent : git_user_agent());
585
586 if (curl_ftp_no_epsv)
587 curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0);
588
589 #ifdef CURLOPT_USE_SSL
590 if (curl_ssl_try)
591 curl_easy_setopt(result, CURLOPT_USE_SSL, CURLUSESSL_TRY);
592 #endif
593
594 /*
595 * CURL also examines these variables as a fallback; but we need to query
596 * them here in order to decide whether to prompt for missing password (cf.
597 * init_curl_proxy_auth()).
598 *
599 * Unlike many other common environment variables, these are historically
600 * lowercase only. It appears that CURL did not know this and implemented
601 * only uppercase variants, which was later corrected to take both - with
602 * the exception of http_proxy, which is lowercase only also in CURL. As
603 * the lowercase versions are the historical quasi-standard, they take
604 * precedence here, as in CURL.
605 */
606 if (!curl_http_proxy) {
607 if (!strcmp(http_auth.protocol, "https")) {
608 var_override(&curl_http_proxy, getenv("HTTPS_PROXY"));
609 var_override(&curl_http_proxy, getenv("https_proxy"));
610 } else {
611 var_override(&curl_http_proxy, getenv("http_proxy"));
612 }
613 if (!curl_http_proxy) {
614 var_override(&curl_http_proxy, getenv("ALL_PROXY"));
615 var_override(&curl_http_proxy, getenv("all_proxy"));
616 }
617 }
618
619 if (curl_http_proxy) {
620 curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy);
621 #if LIBCURL_VERSION_NUM >= 0x071800
622 if (starts_with(curl_http_proxy, "socks5h"))
623 curl_easy_setopt(result,
624 CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5_HOSTNAME);
625 else if (starts_with(curl_http_proxy, "socks5"))
626 curl_easy_setopt(result,
627 CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
628 else if (starts_with(curl_http_proxy, "socks4a"))
629 curl_easy_setopt(result,
630 CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4A);
631 else if (starts_with(curl_http_proxy, "socks"))
632 curl_easy_setopt(result,
633 CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4);
634 #endif
635 if (strstr(curl_http_proxy, "://"))
636 credential_from_url(&proxy_auth, curl_http_proxy);
637 else {
638 struct strbuf url = STRBUF_INIT;
639 strbuf_addf(&url, "http://%s", curl_http_proxy);
640 credential_from_url(&proxy_auth, url.buf);
641 strbuf_release(&url);
642 }
643
644 curl_easy_setopt(result, CURLOPT_PROXY, proxy_auth.host);
645 #if LIBCURL_VERSION_NUM >= 0x071304
646 var_override(&curl_no_proxy, getenv("NO_PROXY"));
647 var_override(&curl_no_proxy, getenv("no_proxy"));
648 curl_easy_setopt(result, CURLOPT_NOPROXY, curl_no_proxy);
649 #endif
650 }
651 init_curl_proxy_auth(result);
652
653 set_curl_keepalive(result);
654
655 return result;
656 }
657
658 static void set_from_env(const char **var, const char *envname)
659 {
660 const char *val = getenv(envname);
661 if (val)
662 *var = val;
663 }
664
665 void http_init(struct remote *remote, const char *url, int proactive_auth)
666 {
667 char *low_speed_limit;
668 char *low_speed_time;
669 char *normalized_url;
670 struct urlmatch_config config = { STRING_LIST_INIT_DUP };
671
672 config.section = "http";
673 config.key = NULL;
674 config.collect_fn = http_options;
675 config.cascade_fn = git_default_config;
676 config.cb = NULL;
677
678 http_is_verbose = 0;
679 normalized_url = url_normalize(url, &config.url);
680
681 git_config(urlmatch_config_entry, &config);
682 free(normalized_url);
683
684 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
685 die("curl_global_init failed");
686
687 http_proactive_auth = proactive_auth;
688
689 if (remote && remote->http_proxy)
690 curl_http_proxy = xstrdup(remote->http_proxy);
691
692 if (remote)
693 var_override(&http_proxy_authmethod, remote->http_proxy_authmethod);
694
695 pragma_header = curl_slist_append(http_copy_default_headers(),
696 "Pragma: no-cache");
697 no_pragma_header = curl_slist_append(http_copy_default_headers(),
698 "Pragma:");
699
700 #ifdef USE_CURL_MULTI
701 {
702 char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS");
703 if (http_max_requests != NULL)
704 max_requests = atoi(http_max_requests);
705 }
706
707 curlm = curl_multi_init();
708 if (!curlm)
709 die("curl_multi_init failed");
710 #endif
711
712 if (getenv("GIT_SSL_NO_VERIFY"))
713 curl_ssl_verify = 0;
714
715 set_from_env(&ssl_cert, "GIT_SSL_CERT");
716 #if LIBCURL_VERSION_NUM >= 0x070903
717 set_from_env(&ssl_key, "GIT_SSL_KEY");
718 #endif
719 #if LIBCURL_VERSION_NUM >= 0x070908
720 set_from_env(&ssl_capath, "GIT_SSL_CAPATH");
721 #endif
722 set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO");
723
724 set_from_env(&user_agent, "GIT_HTTP_USER_AGENT");
725
726 low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT");
727 if (low_speed_limit != NULL)
728 curl_low_speed_limit = strtol(low_speed_limit, NULL, 10);
729 low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME");
730 if (low_speed_time != NULL)
731 curl_low_speed_time = strtol(low_speed_time, NULL, 10);
732
733 if (curl_ssl_verify == -1)
734 curl_ssl_verify = 1;
735
736 curl_session_count = 0;
737 #ifdef USE_CURL_MULTI
738 if (max_requests < 1)
739 max_requests = DEFAULT_MAX_REQUESTS;
740 #endif
741
742 if (getenv("GIT_CURL_FTP_NO_EPSV"))
743 curl_ftp_no_epsv = 1;
744
745 if (url) {
746 credential_from_url(&http_auth, url);
747 if (!ssl_cert_password_required &&
748 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
749 starts_with(url, "https://"))
750 ssl_cert_password_required = 1;
751 }
752
753 #ifndef NO_CURL_EASY_DUPHANDLE
754 curl_default = get_curl_handle();
755 #endif
756 }
757
758 void http_cleanup(void)
759 {
760 struct active_request_slot *slot = active_queue_head;
761
762 while (slot != NULL) {
763 struct active_request_slot *next = slot->next;
764 if (slot->curl != NULL) {
765 #ifdef USE_CURL_MULTI
766 curl_multi_remove_handle(curlm, slot->curl);
767 #endif
768 curl_easy_cleanup(slot->curl);
769 }
770 free(slot);
771 slot = next;
772 }
773 active_queue_head = NULL;
774
775 #ifndef NO_CURL_EASY_DUPHANDLE
776 curl_easy_cleanup(curl_default);
777 #endif
778
779 #ifdef USE_CURL_MULTI
780 curl_multi_cleanup(curlm);
781 #endif
782 curl_global_cleanup();
783
784 curl_slist_free_all(extra_http_headers);
785 extra_http_headers = NULL;
786
787 curl_slist_free_all(pragma_header);
788 pragma_header = NULL;
789
790 curl_slist_free_all(no_pragma_header);
791 no_pragma_header = NULL;
792
793 if (curl_http_proxy) {
794 free((void *)curl_http_proxy);
795 curl_http_proxy = NULL;
796 }
797
798 if (proxy_auth.password) {
799 memset(proxy_auth.password, 0, strlen(proxy_auth.password));
800 free(proxy_auth.password);
801 proxy_auth.password = NULL;
802 }
803
804 free((void *)curl_proxyuserpwd);
805 curl_proxyuserpwd = NULL;
806
807 free((void *)http_proxy_authmethod);
808 http_proxy_authmethod = NULL;
809
810 if (cert_auth.password != NULL) {
811 memset(cert_auth.password, 0, strlen(cert_auth.password));
812 free(cert_auth.password);
813 cert_auth.password = NULL;
814 }
815 ssl_cert_password_required = 0;
816
817 free(cached_accept_language);
818 cached_accept_language = NULL;
819 }
820
821 struct active_request_slot *get_active_slot(void)
822 {
823 struct active_request_slot *slot = active_queue_head;
824 struct active_request_slot *newslot;
825
826 #ifdef USE_CURL_MULTI
827 int num_transfers;
828
829 /* Wait for a slot to open up if the queue is full */
830 while (active_requests >= max_requests) {
831 curl_multi_perform(curlm, &num_transfers);
832 if (num_transfers < active_requests)
833 process_curl_messages();
834 }
835 #endif
836
837 while (slot != NULL && slot->in_use)
838 slot = slot->next;
839
840 if (slot == NULL) {
841 newslot = xmalloc(sizeof(*newslot));
842 newslot->curl = NULL;
843 newslot->in_use = 0;
844 newslot->next = NULL;
845
846 slot = active_queue_head;
847 if (slot == NULL) {
848 active_queue_head = newslot;
849 } else {
850 while (slot->next != NULL)
851 slot = slot->next;
852 slot->next = newslot;
853 }
854 slot = newslot;
855 }
856
857 if (slot->curl == NULL) {
858 #ifdef NO_CURL_EASY_DUPHANDLE
859 slot->curl = get_curl_handle();
860 #else
861 slot->curl = curl_easy_duphandle(curl_default);
862 #endif
863 curl_session_count++;
864 }
865
866 active_requests++;
867 slot->in_use = 1;
868 slot->results = NULL;
869 slot->finished = NULL;
870 slot->callback_data = NULL;
871 slot->callback_func = NULL;
872 curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file);
873 if (curl_save_cookies)
874 curl_easy_setopt(slot->curl, CURLOPT_COOKIEJAR, curl_cookie_file);
875 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header);
876 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr);
877 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL);
878 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL);
879 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL);
880 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL);
881 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0);
882 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
883 curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 1);
884 curl_easy_setopt(slot->curl, CURLOPT_RANGE, NULL);
885
886 #if LIBCURL_VERSION_NUM >= 0x070a08
887 curl_easy_setopt(slot->curl, CURLOPT_IPRESOLVE, git_curl_ipresolve);
888 #endif
889 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
890 curl_easy_setopt(slot->curl, CURLOPT_HTTPAUTH, http_auth_methods);
891 #endif
892 if (http_auth.password || curl_empty_auth)
893 init_curl_http_auth(slot->curl);
894
895 return slot;
896 }
897
898 int start_active_slot(struct active_request_slot *slot)
899 {
900 #ifdef USE_CURL_MULTI
901 CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl);
902 int num_transfers;
903
904 if (curlm_result != CURLM_OK &&
905 curlm_result != CURLM_CALL_MULTI_PERFORM) {
906 active_requests--;
907 slot->in_use = 0;
908 return 0;
909 }
910
911 /*
912 * We know there must be something to do, since we just added
913 * something.
914 */
915 curl_multi_perform(curlm, &num_transfers);
916 #endif
917 return 1;
918 }
919
920 #ifdef USE_CURL_MULTI
921 struct fill_chain {
922 void *data;
923 int (*fill)(void *);
924 struct fill_chain *next;
925 };
926
927 static struct fill_chain *fill_cfg;
928
929 void add_fill_function(void *data, int (*fill)(void *))
930 {
931 struct fill_chain *new = xmalloc(sizeof(*new));
932 struct fill_chain **linkp = &fill_cfg;
933 new->data = data;
934 new->fill = fill;
935 new->next = NULL;
936 while (*linkp)
937 linkp = &(*linkp)->next;
938 *linkp = new;
939 }
940
941 void fill_active_slots(void)
942 {
943 struct active_request_slot *slot = active_queue_head;
944
945 while (active_requests < max_requests) {
946 struct fill_chain *fill;
947 for (fill = fill_cfg; fill; fill = fill->next)
948 if (fill->fill(fill->data))
949 break;
950
951 if (!fill)
952 break;
953 }
954
955 while (slot != NULL) {
956 if (!slot->in_use && slot->curl != NULL
957 && curl_session_count > min_curl_sessions) {
958 curl_easy_cleanup(slot->curl);
959 slot->curl = NULL;
960 curl_session_count--;
961 }
962 slot = slot->next;
963 }
964 }
965
966 void step_active_slots(void)
967 {
968 int num_transfers;
969 CURLMcode curlm_result;
970
971 do {
972 curlm_result = curl_multi_perform(curlm, &num_transfers);
973 } while (curlm_result == CURLM_CALL_MULTI_PERFORM);
974 if (num_transfers < active_requests) {
975 process_curl_messages();
976 fill_active_slots();
977 }
978 }
979 #endif
980
981 void run_active_slot(struct active_request_slot *slot)
982 {
983 #ifdef USE_CURL_MULTI
984 fd_set readfds;
985 fd_set writefds;
986 fd_set excfds;
987 int max_fd;
988 struct timeval select_timeout;
989 int finished = 0;
990
991 slot->finished = &finished;
992 while (!finished) {
993 step_active_slots();
994
995 if (slot->in_use) {
996 #if LIBCURL_VERSION_NUM >= 0x070f04
997 long curl_timeout;
998 curl_multi_timeout(curlm, &curl_timeout);
999 if (curl_timeout == 0) {
1000 continue;
1001 } else if (curl_timeout == -1) {
1002 select_timeout.tv_sec = 0;
1003 select_timeout.tv_usec = 50000;
1004 } else {
1005 select_timeout.tv_sec = curl_timeout / 1000;
1006 select_timeout.tv_usec = (curl_timeout % 1000) * 1000;
1007 }
1008 #else
1009 select_timeout.tv_sec = 0;
1010 select_timeout.tv_usec = 50000;
1011 #endif
1012
1013 max_fd = -1;
1014 FD_ZERO(&readfds);
1015 FD_ZERO(&writefds);
1016 FD_ZERO(&excfds);
1017 curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd);
1018
1019 /*
1020 * It can happen that curl_multi_timeout returns a pathologically
1021 * long timeout when curl_multi_fdset returns no file descriptors
1022 * to read. See commit message for more details.
1023 */
1024 if (max_fd < 0 &&
1025 (select_timeout.tv_sec > 0 ||
1026 select_timeout.tv_usec > 50000)) {
1027 select_timeout.tv_sec = 0;
1028 select_timeout.tv_usec = 50000;
1029 }
1030
1031 select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout);
1032 }
1033 }
1034 #else
1035 while (slot->in_use) {
1036 slot->curl_result = curl_easy_perform(slot->curl);
1037 finish_active_slot(slot);
1038 }
1039 #endif
1040 }
1041
1042 static void release_active_slot(struct active_request_slot *slot)
1043 {
1044 closedown_active_slot(slot);
1045 if (slot->curl && curl_session_count > min_curl_sessions) {
1046 #ifdef USE_CURL_MULTI
1047 curl_multi_remove_handle(curlm, slot->curl);
1048 #endif
1049 curl_easy_cleanup(slot->curl);
1050 slot->curl = NULL;
1051 curl_session_count--;
1052 }
1053 #ifdef USE_CURL_MULTI
1054 fill_active_slots();
1055 #endif
1056 }
1057
1058 void finish_all_active_slots(void)
1059 {
1060 struct active_request_slot *slot = active_queue_head;
1061
1062 while (slot != NULL)
1063 if (slot->in_use) {
1064 run_active_slot(slot);
1065 slot = active_queue_head;
1066 } else {
1067 slot = slot->next;
1068 }
1069 }
1070
1071 /* Helpers for modifying and creating URLs */
1072 static inline int needs_quote(int ch)
1073 {
1074 if (((ch >= 'A') && (ch <= 'Z'))
1075 || ((ch >= 'a') && (ch <= 'z'))
1076 || ((ch >= '0') && (ch <= '9'))
1077 || (ch == '/')
1078 || (ch == '-')
1079 || (ch == '.'))
1080 return 0;
1081 return 1;
1082 }
1083
1084 static char *quote_ref_url(const char *base, const char *ref)
1085 {
1086 struct strbuf buf = STRBUF_INIT;
1087 const char *cp;
1088 int ch;
1089
1090 end_url_with_slash(&buf, base);
1091
1092 for (cp = ref; (ch = *cp) != 0; cp++)
1093 if (needs_quote(ch))
1094 strbuf_addf(&buf, "%%%02x", ch);
1095 else
1096 strbuf_addch(&buf, *cp);
1097
1098 return strbuf_detach(&buf, NULL);
1099 }
1100
1101 void append_remote_object_url(struct strbuf *buf, const char *url,
1102 const char *hex,
1103 int only_two_digit_prefix)
1104 {
1105 end_url_with_slash(buf, url);
1106
1107 strbuf_addf(buf, "objects/%.*s/", 2, hex);
1108 if (!only_two_digit_prefix)
1109 strbuf_addf(buf, "%s", hex+2);
1110 }
1111
1112 char *get_remote_object_url(const char *url, const char *hex,
1113 int only_two_digit_prefix)
1114 {
1115 struct strbuf buf = STRBUF_INIT;
1116 append_remote_object_url(&buf, url, hex, only_two_digit_prefix);
1117 return strbuf_detach(&buf, NULL);
1118 }
1119
1120 static int handle_curl_result(struct slot_results *results)
1121 {
1122 /*
1123 * If we see a failing http code with CURLE_OK, we have turned off
1124 * FAILONERROR (to keep the server's custom error response), and should
1125 * translate the code into failure here.
1126 */
1127 if (results->curl_result == CURLE_OK &&
1128 results->http_code >= 400) {
1129 results->curl_result = CURLE_HTTP_RETURNED_ERROR;
1130 /*
1131 * Normally curl will already have put the "reason phrase"
1132 * from the server into curl_errorstr; unfortunately without
1133 * FAILONERROR it is lost, so we can give only the numeric
1134 * status code.
1135 */
1136 snprintf(curl_errorstr, sizeof(curl_errorstr),
1137 "The requested URL returned error: %ld",
1138 results->http_code);
1139 }
1140
1141 if (results->curl_result == CURLE_OK) {
1142 credential_approve(&http_auth);
1143 if (proxy_auth.password)
1144 credential_approve(&proxy_auth);
1145 return HTTP_OK;
1146 } else if (missing_target(results))
1147 return HTTP_MISSING_TARGET;
1148 else if (results->http_code == 401) {
1149 if (http_auth.username && http_auth.password) {
1150 credential_reject(&http_auth);
1151 return HTTP_NOAUTH;
1152 } else {
1153 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
1154 http_auth_methods &= ~CURLAUTH_GSSNEGOTIATE;
1155 #endif
1156 return HTTP_REAUTH;
1157 }
1158 } else {
1159 if (results->http_connectcode == 407)
1160 credential_reject(&proxy_auth);
1161 #if LIBCURL_VERSION_NUM >= 0x070c00
1162 if (!curl_errorstr[0])
1163 strlcpy(curl_errorstr,
1164 curl_easy_strerror(results->curl_result),
1165 sizeof(curl_errorstr));
1166 #endif
1167 return HTTP_ERROR;
1168 }
1169 }
1170
1171 int run_one_slot(struct active_request_slot *slot,
1172 struct slot_results *results)
1173 {
1174 slot->results = results;
1175 if (!start_active_slot(slot)) {
1176 snprintf(curl_errorstr, sizeof(curl_errorstr),
1177 "failed to start HTTP request");
1178 return HTTP_START_FAILED;
1179 }
1180
1181 run_active_slot(slot);
1182 return handle_curl_result(results);
1183 }
1184
1185 struct curl_slist *http_copy_default_headers(void)
1186 {
1187 struct curl_slist *headers = NULL, *h;
1188
1189 for (h = extra_http_headers; h; h = h->next)
1190 headers = curl_slist_append(headers, h->data);
1191
1192 return headers;
1193 }
1194
1195 static CURLcode curlinfo_strbuf(CURL *curl, CURLINFO info, struct strbuf *buf)
1196 {
1197 char *ptr;
1198 CURLcode ret;
1199
1200 strbuf_reset(buf);
1201 ret = curl_easy_getinfo(curl, info, &ptr);
1202 if (!ret && ptr)
1203 strbuf_addstr(buf, ptr);
1204 return ret;
1205 }
1206
1207 /*
1208 * Check for and extract a content-type parameter. "raw"
1209 * should be positioned at the start of the potential
1210 * parameter, with any whitespace already removed.
1211 *
1212 * "name" is the name of the parameter. The value is appended
1213 * to "out".
1214 */
1215 static int extract_param(const char *raw, const char *name,
1216 struct strbuf *out)
1217 {
1218 size_t len = strlen(name);
1219
1220 if (strncasecmp(raw, name, len))
1221 return -1;
1222 raw += len;
1223
1224 if (*raw != '=')
1225 return -1;
1226 raw++;
1227
1228 while (*raw && !isspace(*raw) && *raw != ';')
1229 strbuf_addch(out, *raw++);
1230 return 0;
1231 }
1232
1233 /*
1234 * Extract a normalized version of the content type, with any
1235 * spaces suppressed, all letters lowercased, and no trailing ";"
1236 * or parameters.
1237 *
1238 * Note that we will silently remove even invalid whitespace. For
1239 * example, "text / plain" is specifically forbidden by RFC 2616,
1240 * but "text/plain" is the only reasonable output, and this keeps
1241 * our code simple.
1242 *
1243 * If the "charset" argument is not NULL, store the value of any
1244 * charset parameter there.
1245 *
1246 * Example:
1247 * "TEXT/PLAIN; charset=utf-8" -> "text/plain", "utf-8"
1248 * "text / plain" -> "text/plain"
1249 */
1250 static void extract_content_type(struct strbuf *raw, struct strbuf *type,
1251 struct strbuf *charset)
1252 {
1253 const char *p;
1254
1255 strbuf_reset(type);
1256 strbuf_grow(type, raw->len);
1257 for (p = raw->buf; *p; p++) {
1258 if (isspace(*p))
1259 continue;
1260 if (*p == ';') {
1261 p++;
1262 break;
1263 }
1264 strbuf_addch(type, tolower(*p));
1265 }
1266
1267 if (!charset)
1268 return;
1269
1270 strbuf_reset(charset);
1271 while (*p) {
1272 while (isspace(*p) || *p == ';')
1273 p++;
1274 if (!extract_param(p, "charset", charset))
1275 return;
1276 while (*p && !isspace(*p))
1277 p++;
1278 }
1279
1280 if (!charset->len && starts_with(type->buf, "text/"))
1281 strbuf_addstr(charset, "ISO-8859-1");
1282 }
1283
1284 static void write_accept_language(struct strbuf *buf)
1285 {
1286 /*
1287 * MAX_DECIMAL_PLACES must not be larger than 3. If it is larger than
1288 * that, q-value will be smaller than 0.001, the minimum q-value the
1289 * HTTP specification allows. See
1290 * http://tools.ietf.org/html/rfc7231#section-5.3.1 for q-value.
1291 */
1292 const int MAX_DECIMAL_PLACES = 3;
1293 const int MAX_LANGUAGE_TAGS = 1000;
1294 const int MAX_ACCEPT_LANGUAGE_HEADER_SIZE = 4000;
1295 char **language_tags = NULL;
1296 int num_langs = 0;
1297 const char *s = get_preferred_languages();
1298 int i;
1299 struct strbuf tag = STRBUF_INIT;
1300
1301 /* Don't add Accept-Language header if no language is preferred. */
1302 if (!s)
1303 return;
1304
1305 /*
1306 * Split the colon-separated string of preferred languages into
1307 * language_tags array.
1308 */
1309 do {
1310 /* collect language tag */
1311 for (; *s && (isalnum(*s) || *s == '_'); s++)
1312 strbuf_addch(&tag, *s == '_' ? '-' : *s);
1313
1314 /* skip .codeset, @modifier and any other unnecessary parts */
1315 while (*s && *s != ':')
1316 s++;
1317
1318 if (tag.len) {
1319 num_langs++;
1320 REALLOC_ARRAY(language_tags, num_langs);
1321 language_tags[num_langs - 1] = strbuf_detach(&tag, NULL);
1322 if (num_langs >= MAX_LANGUAGE_TAGS - 1) /* -1 for '*' */
1323 break;
1324 }
1325 } while (*s++);
1326
1327 /* write Accept-Language header into buf */
1328 if (num_langs) {
1329 int last_buf_len = 0;
1330 int max_q;
1331 int decimal_places;
1332 char q_format[32];
1333
1334 /* add '*' */
1335 REALLOC_ARRAY(language_tags, num_langs + 1);
1336 language_tags[num_langs++] = "*"; /* it's OK; this won't be freed */
1337
1338 /* compute decimal_places */
1339 for (max_q = 1, decimal_places = 0;
1340 max_q < num_langs && decimal_places <= MAX_DECIMAL_PLACES;
1341 decimal_places++, max_q *= 10)
1342 ;
1343
1344 xsnprintf(q_format, sizeof(q_format), ";q=0.%%0%dd", decimal_places);
1345
1346 strbuf_addstr(buf, "Accept-Language: ");
1347
1348 for (i = 0; i < num_langs; i++) {
1349 if (i > 0)
1350 strbuf_addstr(buf, ", ");
1351
1352 strbuf_addstr(buf, language_tags[i]);
1353
1354 if (i > 0)
1355 strbuf_addf(buf, q_format, max_q - i);
1356
1357 if (buf->len > MAX_ACCEPT_LANGUAGE_HEADER_SIZE) {
1358 strbuf_remove(buf, last_buf_len, buf->len - last_buf_len);
1359 break;
1360 }
1361
1362 last_buf_len = buf->len;
1363 }
1364 }
1365
1366 /* free language tags -- last one is a static '*' */
1367 for (i = 0; i < num_langs - 1; i++)
1368 free(language_tags[i]);
1369 free(language_tags);
1370 }
1371
1372 /*
1373 * Get an Accept-Language header which indicates user's preferred languages.
1374 *
1375 * Examples:
1376 * LANGUAGE= -> ""
1377 * LANGUAGE=ko:en -> "Accept-Language: ko, en; q=0.9, *; q=0.1"
1378 * LANGUAGE=ko_KR.UTF-8:sr@latin -> "Accept-Language: ko-KR, sr; q=0.9, *; q=0.1"
1379 * LANGUAGE=ko LANG=en_US.UTF-8 -> "Accept-Language: ko, *; q=0.1"
1380 * LANGUAGE= LANG=en_US.UTF-8 -> "Accept-Language: en-US, *; q=0.1"
1381 * LANGUAGE= LANG=C -> ""
1382 */
1383 static const char *get_accept_language(void)
1384 {
1385 if (!cached_accept_language) {
1386 struct strbuf buf = STRBUF_INIT;
1387 write_accept_language(&buf);
1388 if (buf.len > 0)
1389 cached_accept_language = strbuf_detach(&buf, NULL);
1390 }
1391
1392 return cached_accept_language;
1393 }
1394
1395 static void http_opt_request_remainder(CURL *curl, off_t pos)
1396 {
1397 char buf[128];
1398 xsnprintf(buf, sizeof(buf), "%"PRIuMAX"-", (uintmax_t)pos);
1399 curl_easy_setopt(curl, CURLOPT_RANGE, buf);
1400 }
1401
1402 /* http_request() targets */
1403 #define HTTP_REQUEST_STRBUF 0
1404 #define HTTP_REQUEST_FILE 1
1405
1406 static int http_request(const char *url,
1407 void *result, int target,
1408 const struct http_get_options *options)
1409 {
1410 struct active_request_slot *slot;
1411 struct slot_results results;
1412 struct curl_slist *headers = http_copy_default_headers();
1413 struct strbuf buf = STRBUF_INIT;
1414 const char *accept_language;
1415 int ret;
1416
1417 slot = get_active_slot();
1418 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
1419
1420 if (result == NULL) {
1421 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
1422 } else {
1423 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
1424 curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
1425
1426 if (target == HTTP_REQUEST_FILE) {
1427 off_t posn = ftello(result);
1428 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
1429 fwrite);
1430 if (posn > 0)
1431 http_opt_request_remainder(slot->curl, posn);
1432 } else
1433 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
1434 fwrite_buffer);
1435 }
1436
1437 accept_language = get_accept_language();
1438
1439 if (accept_language)
1440 headers = curl_slist_append(headers, accept_language);
1441
1442 strbuf_addstr(&buf, "Pragma:");
1443 if (options && options->no_cache)
1444 strbuf_addstr(&buf, " no-cache");
1445 if (options && options->keep_error)
1446 curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0);
1447
1448 headers = curl_slist_append(headers, buf.buf);
1449
1450 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1451 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
1452 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
1453
1454 ret = run_one_slot(slot, &results);
1455
1456 if (options && options->content_type) {
1457 struct strbuf raw = STRBUF_INIT;
1458 curlinfo_strbuf(slot->curl, CURLINFO_CONTENT_TYPE, &raw);
1459 extract_content_type(&raw, options->content_type,
1460 options->charset);
1461 strbuf_release(&raw);
1462 }
1463
1464 if (options && options->effective_url)
1465 curlinfo_strbuf(slot->curl, CURLINFO_EFFECTIVE_URL,
1466 options->effective_url);
1467
1468 curl_slist_free_all(headers);
1469 strbuf_release(&buf);
1470
1471 return ret;
1472 }
1473
1474 /*
1475 * Update the "base" url to a more appropriate value, as deduced by
1476 * redirects seen when requesting a URL starting with "url".
1477 *
1478 * The "asked" parameter is a URL that we asked curl to access, and must begin
1479 * with "base".
1480 *
1481 * The "got" parameter is the URL that curl reported to us as where we ended
1482 * up.
1483 *
1484 * Returns 1 if we updated the base url, 0 otherwise.
1485 *
1486 * Our basic strategy is to compare "base" and "asked" to find the bits
1487 * specific to our request. We then strip those bits off of "got" to yield the
1488 * new base. So for example, if our base is "http://example.com/foo.git",
1489 * and we ask for "http://example.com/foo.git/info/refs", we might end up
1490 * with "https://other.example.com/foo.git/info/refs". We would want the
1491 * new URL to become "https://other.example.com/foo.git".
1492 *
1493 * Note that this assumes a sane redirect scheme. It's entirely possible
1494 * in the example above to end up at a URL that does not even end in
1495 * "info/refs". In such a case we simply punt, as there is not much we can
1496 * do (and such a scheme is unlikely to represent a real git repository,
1497 * which means we are likely about to abort anyway).
1498 */
1499 static int update_url_from_redirect(struct strbuf *base,
1500 const char *asked,
1501 const struct strbuf *got)
1502 {
1503 const char *tail;
1504 size_t tail_len;
1505
1506 if (!strcmp(asked, got->buf))
1507 return 0;
1508
1509 if (!skip_prefix(asked, base->buf, &tail))
1510 die("BUG: update_url_from_redirect: %s is not a superset of %s",
1511 asked, base->buf);
1512
1513 tail_len = strlen(tail);
1514
1515 if (got->len < tail_len ||
1516 strcmp(tail, got->buf + got->len - tail_len))
1517 return 0; /* insane redirect scheme */
1518
1519 strbuf_reset(base);
1520 strbuf_add(base, got->buf, got->len - tail_len);
1521 return 1;
1522 }
1523
1524 static int http_request_reauth(const char *url,
1525 void *result, int target,
1526 struct http_get_options *options)
1527 {
1528 int ret = http_request(url, result, target, options);
1529
1530 if (options && options->effective_url && options->base_url) {
1531 if (update_url_from_redirect(options->base_url,
1532 url, options->effective_url)) {
1533 credential_from_url(&http_auth, options->base_url->buf);
1534 url = options->effective_url->buf;
1535 }
1536 }
1537
1538 if (ret != HTTP_REAUTH)
1539 return ret;
1540
1541 /*
1542 * If we are using KEEP_ERROR, the previous request may have
1543 * put cruft into our output stream; we should clear it out before
1544 * making our next request. We only know how to do this for
1545 * the strbuf case, but that is enough to satisfy current callers.
1546 */
1547 if (options && options->keep_error) {
1548 switch (target) {
1549 case HTTP_REQUEST_STRBUF:
1550 strbuf_reset(result);
1551 break;
1552 default:
1553 die("BUG: HTTP_KEEP_ERROR is only supported with strbufs");
1554 }
1555 }
1556
1557 credential_fill(&http_auth);
1558
1559 return http_request(url, result, target, options);
1560 }
1561
1562 int http_get_strbuf(const char *url,
1563 struct strbuf *result,
1564 struct http_get_options *options)
1565 {
1566 return http_request_reauth(url, result, HTTP_REQUEST_STRBUF, options);
1567 }
1568
1569 /*
1570 * Downloads a URL and stores the result in the given file.
1571 *
1572 * If a previous interrupted download is detected (i.e. a previous temporary
1573 * file is still around) the download is resumed.
1574 */
1575 static int http_get_file(const char *url, const char *filename,
1576 struct http_get_options *options)
1577 {
1578 int ret;
1579 struct strbuf tmpfile = STRBUF_INIT;
1580 FILE *result;
1581
1582 strbuf_addf(&tmpfile, "%s.temp", filename);
1583 result = fopen(tmpfile.buf, "a");
1584 if (!result) {
1585 error("Unable to open local file %s", tmpfile.buf);
1586 ret = HTTP_ERROR;
1587 goto cleanup;
1588 }
1589
1590 ret = http_request_reauth(url, result, HTTP_REQUEST_FILE, options);
1591 fclose(result);
1592
1593 if (ret == HTTP_OK && finalize_object_file(tmpfile.buf, filename))
1594 ret = HTTP_ERROR;
1595 cleanup:
1596 strbuf_release(&tmpfile);
1597 return ret;
1598 }
1599
1600 int http_fetch_ref(const char *base, struct ref *ref)
1601 {
1602 struct http_get_options options = {0};
1603 char *url;
1604 struct strbuf buffer = STRBUF_INIT;
1605 int ret = -1;
1606
1607 options.no_cache = 1;
1608
1609 url = quote_ref_url(base, ref->name);
1610 if (http_get_strbuf(url, &buffer, &options) == HTTP_OK) {
1611 strbuf_rtrim(&buffer);
1612 if (buffer.len == 40)
1613 ret = get_oid_hex(buffer.buf, &ref->old_oid);
1614 else if (starts_with(buffer.buf, "ref: ")) {
1615 ref->symref = xstrdup(buffer.buf + 5);
1616 ret = 0;
1617 }
1618 }
1619
1620 strbuf_release(&buffer);
1621 free(url);
1622 return ret;
1623 }
1624
1625 /* Helpers for fetching packs */
1626 static char *fetch_pack_index(unsigned char *sha1, const char *base_url)
1627 {
1628 char *url, *tmp;
1629 struct strbuf buf = STRBUF_INIT;
1630
1631 if (http_is_verbose)
1632 fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1));
1633
1634 end_url_with_slash(&buf, base_url);
1635 strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1));
1636 url = strbuf_detach(&buf, NULL);
1637
1638 strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1));
1639 tmp = strbuf_detach(&buf, NULL);
1640
1641 if (http_get_file(url, tmp, NULL) != HTTP_OK) {
1642 error("Unable to get pack index %s", url);
1643 free(tmp);
1644 tmp = NULL;
1645 }
1646
1647 free(url);
1648 return tmp;
1649 }
1650
1651 static int fetch_and_setup_pack_index(struct packed_git **packs_head,
1652 unsigned char *sha1, const char *base_url)
1653 {
1654 struct packed_git *new_pack;
1655 char *tmp_idx = NULL;
1656 int ret;
1657
1658 if (has_pack_index(sha1)) {
1659 new_pack = parse_pack_index(sha1, sha1_pack_index_name(sha1));
1660 if (!new_pack)
1661 return -1; /* parse_pack_index() already issued error message */
1662 goto add_pack;
1663 }
1664
1665 tmp_idx = fetch_pack_index(sha1, base_url);
1666 if (!tmp_idx)
1667 return -1;
1668
1669 new_pack = parse_pack_index(sha1, tmp_idx);
1670 if (!new_pack) {
1671 unlink(tmp_idx);
1672 free(tmp_idx);
1673
1674 return -1; /* parse_pack_index() already issued error message */
1675 }
1676
1677 ret = verify_pack_index(new_pack);
1678 if (!ret) {
1679 close_pack_index(new_pack);
1680 ret = finalize_object_file(tmp_idx, sha1_pack_index_name(sha1));
1681 }
1682 free(tmp_idx);
1683 if (ret)
1684 return -1;
1685
1686 add_pack:
1687 new_pack->next = *packs_head;
1688 *packs_head = new_pack;
1689 return 0;
1690 }
1691
1692 int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
1693 {
1694 struct http_get_options options = {0};
1695 int ret = 0, i = 0;
1696 char *url, *data;
1697 struct strbuf buf = STRBUF_INIT;
1698 unsigned char sha1[20];
1699
1700 end_url_with_slash(&buf, base_url);
1701 strbuf_addstr(&buf, "objects/info/packs");
1702 url = strbuf_detach(&buf, NULL);
1703
1704 options.no_cache = 1;
1705 ret = http_get_strbuf(url, &buf, &options);
1706 if (ret != HTTP_OK)
1707 goto cleanup;
1708
1709 data = buf.buf;
1710 while (i < buf.len) {
1711 switch (data[i]) {
1712 case 'P':
1713 i++;
1714 if (i + 52 <= buf.len &&
1715 starts_with(data + i, " pack-") &&
1716 starts_with(data + i + 46, ".pack\n")) {
1717 get_sha1_hex(data + i + 6, sha1);
1718 fetch_and_setup_pack_index(packs_head, sha1,
1719 base_url);
1720 i += 51;
1721 break;
1722 }
1723 default:
1724 while (i < buf.len && data[i] != '\n')
1725 i++;
1726 }
1727 i++;
1728 }
1729
1730 cleanup:
1731 free(url);
1732 return ret;
1733 }
1734
1735 void release_http_pack_request(struct http_pack_request *preq)
1736 {
1737 if (preq->packfile != NULL) {
1738 fclose(preq->packfile);
1739 preq->packfile = NULL;
1740 }
1741 preq->slot = NULL;
1742 free(preq->url);
1743 free(preq);
1744 }
1745
1746 int finish_http_pack_request(struct http_pack_request *preq)
1747 {
1748 struct packed_git **lst;
1749 struct packed_git *p = preq->target;
1750 char *tmp_idx;
1751 size_t len;
1752 struct child_process ip = CHILD_PROCESS_INIT;
1753 const char *ip_argv[8];
1754
1755 close_pack_index(p);
1756
1757 fclose(preq->packfile);
1758 preq->packfile = NULL;
1759
1760 lst = preq->lst;
1761 while (*lst != p)
1762 lst = &((*lst)->next);
1763 *lst = (*lst)->next;
1764
1765 if (!strip_suffix(preq->tmpfile, ".pack.temp", &len))
1766 die("BUG: pack tmpfile does not end in .pack.temp?");
1767 tmp_idx = xstrfmt("%.*s.idx.temp", (int)len, preq->tmpfile);
1768
1769 ip_argv[0] = "index-pack";
1770 ip_argv[1] = "-o";
1771 ip_argv[2] = tmp_idx;
1772 ip_argv[3] = preq->tmpfile;
1773 ip_argv[4] = NULL;
1774
1775 ip.argv = ip_argv;
1776 ip.git_cmd = 1;
1777 ip.no_stdin = 1;
1778 ip.no_stdout = 1;
1779
1780 if (run_command(&ip)) {
1781 unlink(preq->tmpfile);
1782 unlink(tmp_idx);
1783 free(tmp_idx);
1784 return -1;
1785 }
1786
1787 unlink(sha1_pack_index_name(p->sha1));
1788
1789 if (finalize_object_file(preq->tmpfile, sha1_pack_name(p->sha1))
1790 || finalize_object_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
1791 free(tmp_idx);
1792 return -1;
1793 }
1794
1795 install_packed_git(p);
1796 free(tmp_idx);
1797 return 0;
1798 }
1799
1800 struct http_pack_request *new_http_pack_request(
1801 struct packed_git *target, const char *base_url)
1802 {
1803 off_t prev_posn = 0;
1804 struct strbuf buf = STRBUF_INIT;
1805 struct http_pack_request *preq;
1806
1807 preq = xcalloc(1, sizeof(*preq));
1808 preq->target = target;
1809
1810 end_url_with_slash(&buf, base_url);
1811 strbuf_addf(&buf, "objects/pack/pack-%s.pack",
1812 sha1_to_hex(target->sha1));
1813 preq->url = strbuf_detach(&buf, NULL);
1814
1815 snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp",
1816 sha1_pack_name(target->sha1));
1817 preq->packfile = fopen(preq->tmpfile, "a");
1818 if (!preq->packfile) {
1819 error("Unable to open local file %s for pack",
1820 preq->tmpfile);
1821 goto abort;
1822 }
1823
1824 preq->slot = get_active_slot();
1825 curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
1826 curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
1827 curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url);
1828 curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1829 no_pragma_header);
1830
1831 /*
1832 * If there is data present from a previous transfer attempt,
1833 * resume where it left off
1834 */
1835 prev_posn = ftello(preq->packfile);
1836 if (prev_posn>0) {
1837 if (http_is_verbose)
1838 fprintf(stderr,
1839 "Resuming fetch of pack %s at byte %"PRIuMAX"\n",
1840 sha1_to_hex(target->sha1), (uintmax_t)prev_posn);
1841 http_opt_request_remainder(preq->slot->curl, prev_posn);
1842 }
1843
1844 return preq;
1845
1846 abort:
1847 free(preq->url);
1848 free(preq);
1849 return NULL;
1850 }
1851
1852 /* Helpers for fetching objects (loose) */
1853 static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb,
1854 void *data)
1855 {
1856 unsigned char expn[4096];
1857 size_t size = eltsize * nmemb;
1858 int posn = 0;
1859 struct http_object_request *freq =
1860 (struct http_object_request *)data;
1861 do {
1862 ssize_t retval = xwrite(freq->localfile,
1863 (char *) ptr + posn, size - posn);
1864 if (retval < 0)
1865 return posn;
1866 posn += retval;
1867 } while (posn < size);
1868
1869 freq->stream.avail_in = size;
1870 freq->stream.next_in = (void *)ptr;
1871 do {
1872 freq->stream.next_out = expn;
1873 freq->stream.avail_out = sizeof(expn);
1874 freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH);
1875 git_SHA1_Update(&freq->c, expn,
1876 sizeof(expn) - freq->stream.avail_out);
1877 } while (freq->stream.avail_in && freq->zret == Z_OK);
1878 return size;
1879 }
1880
1881 struct http_object_request *new_http_object_request(const char *base_url,
1882 unsigned char *sha1)
1883 {
1884 char *hex = sha1_to_hex(sha1);
1885 const char *filename;
1886 char prevfile[PATH_MAX];
1887 int prevlocal;
1888 char prev_buf[PREV_BUF_SIZE];
1889 ssize_t prev_read = 0;
1890 off_t prev_posn = 0;
1891 struct http_object_request *freq;
1892
1893 freq = xcalloc(1, sizeof(*freq));
1894 hashcpy(freq->sha1, sha1);
1895 freq->localfile = -1;
1896
1897 filename = sha1_file_name(sha1);
1898 snprintf(freq->tmpfile, sizeof(freq->tmpfile),
1899 "%s.temp", filename);
1900
1901 snprintf(prevfile, sizeof(prevfile), "%s.prev", filename);
1902 unlink_or_warn(prevfile);
1903 rename(freq->tmpfile, prevfile);
1904 unlink_or_warn(freq->tmpfile);
1905
1906 if (freq->localfile != -1)
1907 error("fd leakage in start: %d", freq->localfile);
1908 freq->localfile = open(freq->tmpfile,
1909 O_WRONLY | O_CREAT | O_EXCL, 0666);
1910 /*
1911 * This could have failed due to the "lazy directory creation";
1912 * try to mkdir the last path component.
1913 */
1914 if (freq->localfile < 0 && errno == ENOENT) {
1915 char *dir = strrchr(freq->tmpfile, '/');
1916 if (dir) {
1917 *dir = 0;
1918 mkdir(freq->tmpfile, 0777);
1919 *dir = '/';
1920 }
1921 freq->localfile = open(freq->tmpfile,
1922 O_WRONLY | O_CREAT | O_EXCL, 0666);
1923 }
1924
1925 if (freq->localfile < 0) {
1926 error("Couldn't create temporary file %s: %s",
1927 freq->tmpfile, strerror(errno));
1928 goto abort;
1929 }
1930
1931 git_inflate_init(&freq->stream);
1932
1933 git_SHA1_Init(&freq->c);
1934
1935 freq->url = get_remote_object_url(base_url, hex, 0);
1936
1937 /*
1938 * If a previous temp file is present, process what was already
1939 * fetched.
1940 */
1941 prevlocal = open(prevfile, O_RDONLY);
1942 if (prevlocal != -1) {
1943 do {
1944 prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
1945 if (prev_read>0) {
1946 if (fwrite_sha1_file(prev_buf,
1947 1,
1948 prev_read,
1949 freq) == prev_read) {
1950 prev_posn += prev_read;
1951 } else {
1952 prev_read = -1;
1953 }
1954 }
1955 } while (prev_read > 0);
1956 close(prevlocal);
1957 }
1958 unlink_or_warn(prevfile);
1959
1960 /*
1961 * Reset inflate/SHA1 if there was an error reading the previous temp
1962 * file; also rewind to the beginning of the local file.
1963 */
1964 if (prev_read == -1) {
1965 memset(&freq->stream, 0, sizeof(freq->stream));
1966 git_inflate_init(&freq->stream);
1967 git_SHA1_Init(&freq->c);
1968 if (prev_posn>0) {
1969 prev_posn = 0;
1970 lseek(freq->localfile, 0, SEEK_SET);
1971 if (ftruncate(freq->localfile, 0) < 0) {
1972 error("Couldn't truncate temporary file %s: %s",
1973 freq->tmpfile, strerror(errno));
1974 goto abort;
1975 }
1976 }
1977 }
1978
1979 freq->slot = get_active_slot();
1980
1981 curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
1982 curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
1983 curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
1984 curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url);
1985 curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
1986
1987 /*
1988 * If we have successfully processed data from a previous fetch
1989 * attempt, only fetch the data we don't already have.
1990 */
1991 if (prev_posn>0) {
1992 if (http_is_verbose)
1993 fprintf(stderr,
1994 "Resuming fetch of object %s at byte %"PRIuMAX"\n",
1995 hex, (uintmax_t)prev_posn);
1996 http_opt_request_remainder(freq->slot->curl, prev_posn);
1997 }
1998
1999 return freq;
2000
2001 abort:
2002 free(freq->url);
2003 free(freq);
2004 return NULL;
2005 }
2006
2007 void process_http_object_request(struct http_object_request *freq)
2008 {
2009 if (freq->slot == NULL)
2010 return;
2011 freq->curl_result = freq->slot->curl_result;
2012 freq->http_code = freq->slot->http_code;
2013 freq->slot = NULL;
2014 }
2015
2016 int finish_http_object_request(struct http_object_request *freq)
2017 {
2018 struct stat st;
2019
2020 close(freq->localfile);
2021 freq->localfile = -1;
2022
2023 process_http_object_request(freq);
2024
2025 if (freq->http_code == 416) {
2026 warning("requested range invalid; we may already have all the data.");
2027 } else if (freq->curl_result != CURLE_OK) {
2028 if (stat(freq->tmpfile, &st) == 0)
2029 if (st.st_size == 0)
2030 unlink_or_warn(freq->tmpfile);
2031 return -1;
2032 }
2033
2034 git_inflate_end(&freq->stream);
2035 git_SHA1_Final(freq->real_sha1, &freq->c);
2036 if (freq->zret != Z_STREAM_END) {
2037 unlink_or_warn(freq->tmpfile);
2038 return -1;
2039 }
2040 if (hashcmp(freq->sha1, freq->real_sha1)) {
2041 unlink_or_warn(freq->tmpfile);
2042 return -1;
2043 }
2044 freq->rename =
2045 finalize_object_file(freq->tmpfile, sha1_file_name(freq->sha1));
2046
2047 return freq->rename;
2048 }
2049
2050 void abort_http_object_request(struct http_object_request *freq)
2051 {
2052 unlink_or_warn(freq->tmpfile);
2053
2054 release_http_object_request(freq);
2055 }
2056
2057 void release_http_object_request(struct http_object_request *freq)
2058 {
2059 if (freq->localfile != -1) {
2060 close(freq->localfile);
2061 freq->localfile = -1;
2062 }
2063 if (freq->url != NULL) {
2064 free(freq->url);
2065 freq->url = NULL;
2066 }
2067 if (freq->slot != NULL) {
2068 freq->slot->callback_func = NULL;
2069 freq->slot->callback_data = NULL;
2070 release_active_slot(freq->slot);
2071 freq->slot = NULL;
2072 }
2073 }
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