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http: support sending custom HTTP headers
[git/raj.git] / http.c
blobaae9944cb9187bd0821c2bfbd55025a4235b9aff
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_string(&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, "socks5"))
623 curl_easy_setopt(result,
624 CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
625 else if (starts_with(curl_http_proxy, "socks4a"))
626 curl_easy_setopt(result,
627 CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4A);
628 else if (starts_with(curl_http_proxy, "socks"))
629 curl_easy_setopt(result,
630 CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4);
631 #endif
632 if (strstr(curl_http_proxy, "://"))
633 credential_from_url(&proxy_auth, curl_http_proxy);
634 else {
635 struct strbuf url = STRBUF_INIT;
636 strbuf_addf(&url, "http://%s", curl_http_proxy);
637 credential_from_url(&proxy_auth, url.buf);
638 strbuf_release(&url);
639 }
640
641 curl_easy_setopt(result, CURLOPT_PROXY, proxy_auth.host);
642 #if LIBCURL_VERSION_NUM >= 0x071304
643 var_override(&curl_no_proxy, getenv("NO_PROXY"));
644 var_override(&curl_no_proxy, getenv("no_proxy"));
645 curl_easy_setopt(result, CURLOPT_NOPROXY, curl_no_proxy);
646 #endif
647 }
648 init_curl_proxy_auth(result);
649
650 set_curl_keepalive(result);
651
652 return result;
653 }
654
655 static void set_from_env(const char **var, const char *envname)
656 {
657 const char *val = getenv(envname);
658 if (val)
659 *var = val;
660 }
661
662 void http_init(struct remote *remote, const char *url, int proactive_auth)
663 {
664 char *low_speed_limit;
665 char *low_speed_time;
666 char *normalized_url;
667 struct urlmatch_config config = { STRING_LIST_INIT_DUP };
668
669 config.section = "http";
670 config.key = NULL;
671 config.collect_fn = http_options;
672 config.cascade_fn = git_default_config;
673 config.cb = NULL;
674
675 http_is_verbose = 0;
676 normalized_url = url_normalize(url, &config.url);
677
678 git_config(urlmatch_config_entry, &config);
679 free(normalized_url);
680
681 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
682 die("curl_global_init failed");
683
684 http_proactive_auth = proactive_auth;
685
686 if (remote && remote->http_proxy)
687 curl_http_proxy = xstrdup(remote->http_proxy);
688
689 if (remote)
690 var_override(&http_proxy_authmethod, remote->http_proxy_authmethod);
691
692 pragma_header = curl_slist_append(http_copy_default_headers(),
693 "Pragma: no-cache");
694 no_pragma_header = curl_slist_append(http_copy_default_headers(),
695 "Pragma:");
696
697 #ifdef USE_CURL_MULTI
698 {
699 char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS");
700 if (http_max_requests != NULL)
701 max_requests = atoi(http_max_requests);
702 }
703
704 curlm = curl_multi_init();
705 if (!curlm)
706 die("curl_multi_init failed");
707 #endif
708
709 if (getenv("GIT_SSL_NO_VERIFY"))
710 curl_ssl_verify = 0;
711
712 set_from_env(&ssl_cert, "GIT_SSL_CERT");
713 #if LIBCURL_VERSION_NUM >= 0x070903
714 set_from_env(&ssl_key, "GIT_SSL_KEY");
715 #endif
716 #if LIBCURL_VERSION_NUM >= 0x070908
717 set_from_env(&ssl_capath, "GIT_SSL_CAPATH");
718 #endif
719 set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO");
720
721 set_from_env(&user_agent, "GIT_HTTP_USER_AGENT");
722
723 low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT");
724 if (low_speed_limit != NULL)
725 curl_low_speed_limit = strtol(low_speed_limit, NULL, 10);
726 low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME");
727 if (low_speed_time != NULL)
728 curl_low_speed_time = strtol(low_speed_time, NULL, 10);
729
730 if (curl_ssl_verify == -1)
731 curl_ssl_verify = 1;
732
733 curl_session_count = 0;
734 #ifdef USE_CURL_MULTI
735 if (max_requests < 1)
736 max_requests = DEFAULT_MAX_REQUESTS;
737 #endif
738
739 if (getenv("GIT_CURL_FTP_NO_EPSV"))
740 curl_ftp_no_epsv = 1;
741
742 if (url) {
743 credential_from_url(&http_auth, url);
744 if (!ssl_cert_password_required &&
745 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
746 starts_with(url, "https://"))
747 ssl_cert_password_required = 1;
748 }
749
750 #ifndef NO_CURL_EASY_DUPHANDLE
751 curl_default = get_curl_handle();
752 #endif
753 }
754
755 void http_cleanup(void)
756 {
757 struct active_request_slot *slot = active_queue_head;
758
759 while (slot != NULL) {
760 struct active_request_slot *next = slot->next;
761 if (slot->curl != NULL) {
762 #ifdef USE_CURL_MULTI
763 curl_multi_remove_handle(curlm, slot->curl);
764 #endif
765 curl_easy_cleanup(slot->curl);
766 }
767 free(slot);
768 slot = next;
769 }
770 active_queue_head = NULL;
771
772 #ifndef NO_CURL_EASY_DUPHANDLE
773 curl_easy_cleanup(curl_default);
774 #endif
775
776 #ifdef USE_CURL_MULTI
777 curl_multi_cleanup(curlm);
778 #endif
779 curl_global_cleanup();
780
781 curl_slist_free_all(extra_http_headers);
782 extra_http_headers = NULL;
783
784 curl_slist_free_all(pragma_header);
785 pragma_header = NULL;
786
787 curl_slist_free_all(no_pragma_header);
788 no_pragma_header = NULL;
789
790 if (curl_http_proxy) {
791 free((void *)curl_http_proxy);
792 curl_http_proxy = NULL;
793 }
794
795 if (proxy_auth.password) {
796 memset(proxy_auth.password, 0, strlen(proxy_auth.password));
797 free(proxy_auth.password);
798 proxy_auth.password = NULL;
799 }
800
801 free((void *)curl_proxyuserpwd);
802 curl_proxyuserpwd = NULL;
803
804 free((void *)http_proxy_authmethod);
805 http_proxy_authmethod = NULL;
806
807 if (cert_auth.password != NULL) {
808 memset(cert_auth.password, 0, strlen(cert_auth.password));
809 free(cert_auth.password);
810 cert_auth.password = NULL;
811 }
812 ssl_cert_password_required = 0;
813
814 free(cached_accept_language);
815 cached_accept_language = NULL;
816 }
817
818 struct active_request_slot *get_active_slot(void)
819 {
820 struct active_request_slot *slot = active_queue_head;
821 struct active_request_slot *newslot;
822
823 #ifdef USE_CURL_MULTI
824 int num_transfers;
825
826 /* Wait for a slot to open up if the queue is full */
827 while (active_requests >= max_requests) {
828 curl_multi_perform(curlm, &num_transfers);
829 if (num_transfers < active_requests)
830 process_curl_messages();
831 }
832 #endif
833
834 while (slot != NULL && slot->in_use)
835 slot = slot->next;
836
837 if (slot == NULL) {
838 newslot = xmalloc(sizeof(*newslot));
839 newslot->curl = NULL;
840 newslot->in_use = 0;
841 newslot->next = NULL;
842
843 slot = active_queue_head;
844 if (slot == NULL) {
845 active_queue_head = newslot;
846 } else {
847 while (slot->next != NULL)
848 slot = slot->next;
849 slot->next = newslot;
850 }
851 slot = newslot;
852 }
853
854 if (slot->curl == NULL) {
855 #ifdef NO_CURL_EASY_DUPHANDLE
856 slot->curl = get_curl_handle();
857 #else
858 slot->curl = curl_easy_duphandle(curl_default);
859 #endif
860 curl_session_count++;
861 }
862
863 active_requests++;
864 slot->in_use = 1;
865 slot->results = NULL;
866 slot->finished = NULL;
867 slot->callback_data = NULL;
868 slot->callback_func = NULL;
869 curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file);
870 if (curl_save_cookies)
871 curl_easy_setopt(slot->curl, CURLOPT_COOKIEJAR, curl_cookie_file);
872 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header);
873 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr);
874 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL);
875 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL);
876 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL);
877 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL);
878 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0);
879 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
880 curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 1);
881 curl_easy_setopt(slot->curl, CURLOPT_RANGE, NULL);
882
883 #if LIBCURL_VERSION_NUM >= 0x070a08
884 curl_easy_setopt(slot->curl, CURLOPT_IPRESOLVE, git_curl_ipresolve);
885 #endif
886 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
887 curl_easy_setopt(slot->curl, CURLOPT_HTTPAUTH, http_auth_methods);
888 #endif
889 if (http_auth.password || curl_empty_auth)
890 init_curl_http_auth(slot->curl);
891
892 return slot;
893 }
894
895 int start_active_slot(struct active_request_slot *slot)
896 {
897 #ifdef USE_CURL_MULTI
898 CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl);
899 int num_transfers;
900
901 if (curlm_result != CURLM_OK &&
902 curlm_result != CURLM_CALL_MULTI_PERFORM) {
903 active_requests--;
904 slot->in_use = 0;
905 return 0;
906 }
907
908 /*
909 * We know there must be something to do, since we just added
910 * something.
911 */
912 curl_multi_perform(curlm, &num_transfers);
913 #endif
914 return 1;
915 }
916
917 #ifdef USE_CURL_MULTI
918 struct fill_chain {
919 void *data;
920 int (*fill)(void *);
921 struct fill_chain *next;
922 };
923
924 static struct fill_chain *fill_cfg;
925
926 void add_fill_function(void *data, int (*fill)(void *))
927 {
928 struct fill_chain *new = xmalloc(sizeof(*new));
929 struct fill_chain **linkp = &fill_cfg;
930 new->data = data;
931 new->fill = fill;
932 new->next = NULL;
933 while (*linkp)
934 linkp = &(*linkp)->next;
935 *linkp = new;
936 }
937
938 void fill_active_slots(void)
939 {
940 struct active_request_slot *slot = active_queue_head;
941
942 while (active_requests < max_requests) {
943 struct fill_chain *fill;
944 for (fill = fill_cfg; fill; fill = fill->next)
945 if (fill->fill(fill->data))
946 break;
947
948 if (!fill)
949 break;
950 }
951
952 while (slot != NULL) {
953 if (!slot->in_use && slot->curl != NULL
954 && curl_session_count > min_curl_sessions) {
955 curl_easy_cleanup(slot->curl);
956 slot->curl = NULL;
957 curl_session_count--;
958 }
959 slot = slot->next;
960 }
961 }
962
963 void step_active_slots(void)
964 {
965 int num_transfers;
966 CURLMcode curlm_result;
967
968 do {
969 curlm_result = curl_multi_perform(curlm, &num_transfers);
970 } while (curlm_result == CURLM_CALL_MULTI_PERFORM);
971 if (num_transfers < active_requests) {
972 process_curl_messages();
973 fill_active_slots();
974 }
975 }
976 #endif
977
978 void run_active_slot(struct active_request_slot *slot)
979 {
980 #ifdef USE_CURL_MULTI
981 fd_set readfds;
982 fd_set writefds;
983 fd_set excfds;
984 int max_fd;
985 struct timeval select_timeout;
986 int finished = 0;
987
988 slot->finished = &finished;
989 while (!finished) {
990 step_active_slots();
991
992 if (slot->in_use) {
993 #if LIBCURL_VERSION_NUM >= 0x070f04
994 long curl_timeout;
995 curl_multi_timeout(curlm, &curl_timeout);
996 if (curl_timeout == 0) {
997 continue;
998 } else if (curl_timeout == -1) {
999 select_timeout.tv_sec = 0;
1000 select_timeout.tv_usec = 50000;
1001 } else {
1002 select_timeout.tv_sec = curl_timeout / 1000;
1003 select_timeout.tv_usec = (curl_timeout % 1000) * 1000;
1004 }
1005 #else
1006 select_timeout.tv_sec = 0;
1007 select_timeout.tv_usec = 50000;
1008 #endif
1009
1010 max_fd = -1;
1011 FD_ZERO(&readfds);
1012 FD_ZERO(&writefds);
1013 FD_ZERO(&excfds);
1014 curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd);
1015
1016 /*
1017 * It can happen that curl_multi_timeout returns a pathologically
1018 * long timeout when curl_multi_fdset returns no file descriptors
1019 * to read. See commit message for more details.
1020 */
1021 if (max_fd < 0 &&
1022 (select_timeout.tv_sec > 0 ||
1023 select_timeout.tv_usec > 50000)) {
1024 select_timeout.tv_sec = 0;
1025 select_timeout.tv_usec = 50000;
1026 }
1027
1028 select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout);
1029 }
1030 }
1031 #else
1032 while (slot->in_use) {
1033 slot->curl_result = curl_easy_perform(slot->curl);
1034 finish_active_slot(slot);
1035 }
1036 #endif
1037 }
1038
1039 static void release_active_slot(struct active_request_slot *slot)
1040 {
1041 closedown_active_slot(slot);
1042 if (slot->curl && curl_session_count > min_curl_sessions) {
1043 #ifdef USE_CURL_MULTI
1044 curl_multi_remove_handle(curlm, slot->curl);
1045 #endif
1046 curl_easy_cleanup(slot->curl);
1047 slot->curl = NULL;
1048 curl_session_count--;
1049 }
1050 #ifdef USE_CURL_MULTI
1051 fill_active_slots();
1052 #endif
1053 }
1054
1055 void finish_all_active_slots(void)
1056 {
1057 struct active_request_slot *slot = active_queue_head;
1058
1059 while (slot != NULL)
1060 if (slot->in_use) {
1061 run_active_slot(slot);
1062 slot = active_queue_head;
1063 } else {
1064 slot = slot->next;
1065 }
1066 }
1067
1068 /* Helpers for modifying and creating URLs */
1069 static inline int needs_quote(int ch)
1070 {
1071 if (((ch >= 'A') && (ch <= 'Z'))
1072 || ((ch >= 'a') && (ch <= 'z'))
1073 || ((ch >= '0') && (ch <= '9'))
1074 || (ch == '/')
1075 || (ch == '-')
1076 || (ch == '.'))
1077 return 0;
1078 return 1;
1079 }
1080
1081 static char *quote_ref_url(const char *base, const char *ref)
1082 {
1083 struct strbuf buf = STRBUF_INIT;
1084 const char *cp;
1085 int ch;
1086
1087 end_url_with_slash(&buf, base);
1088
1089 for (cp = ref; (ch = *cp) != 0; cp++)
1090 if (needs_quote(ch))
1091 strbuf_addf(&buf, "%%%02x", ch);
1092 else
1093 strbuf_addch(&buf, *cp);
1094
1095 return strbuf_detach(&buf, NULL);
1096 }
1097
1098 void append_remote_object_url(struct strbuf *buf, const char *url,
1099 const char *hex,
1100 int only_two_digit_prefix)
1101 {
1102 end_url_with_slash(buf, url);
1103
1104 strbuf_addf(buf, "objects/%.*s/", 2, hex);
1105 if (!only_two_digit_prefix)
1106 strbuf_addf(buf, "%s", hex+2);
1107 }
1108
1109 char *get_remote_object_url(const char *url, const char *hex,
1110 int only_two_digit_prefix)
1111 {
1112 struct strbuf buf = STRBUF_INIT;
1113 append_remote_object_url(&buf, url, hex, only_two_digit_prefix);
1114 return strbuf_detach(&buf, NULL);
1115 }
1116
1117 static int handle_curl_result(struct slot_results *results)
1118 {
1119 /*
1120 * If we see a failing http code with CURLE_OK, we have turned off
1121 * FAILONERROR (to keep the server's custom error response), and should
1122 * translate the code into failure here.
1123 */
1124 if (results->curl_result == CURLE_OK &&
1125 results->http_code >= 400) {
1126 results->curl_result = CURLE_HTTP_RETURNED_ERROR;
1127 /*
1128 * Normally curl will already have put the "reason phrase"
1129 * from the server into curl_errorstr; unfortunately without
1130 * FAILONERROR it is lost, so we can give only the numeric
1131 * status code.
1132 */
1133 snprintf(curl_errorstr, sizeof(curl_errorstr),
1134 "The requested URL returned error: %ld",
1135 results->http_code);
1136 }
1137
1138 if (results->curl_result == CURLE_OK) {
1139 credential_approve(&http_auth);
1140 if (proxy_auth.password)
1141 credential_approve(&proxy_auth);
1142 return HTTP_OK;
1143 } else if (missing_target(results))
1144 return HTTP_MISSING_TARGET;
1145 else if (results->http_code == 401) {
1146 if (http_auth.username && http_auth.password) {
1147 credential_reject(&http_auth);
1148 return HTTP_NOAUTH;
1149 } else {
1150 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
1151 http_auth_methods &= ~CURLAUTH_GSSNEGOTIATE;
1152 #endif
1153 return HTTP_REAUTH;
1154 }
1155 } else {
1156 if (results->http_connectcode == 407)
1157 credential_reject(&proxy_auth);
1158 #if LIBCURL_VERSION_NUM >= 0x070c00
1159 if (!curl_errorstr[0])
1160 strlcpy(curl_errorstr,
1161 curl_easy_strerror(results->curl_result),
1162 sizeof(curl_errorstr));
1163 #endif
1164 return HTTP_ERROR;
1165 }
1166 }
1167
1168 int run_one_slot(struct active_request_slot *slot,
1169 struct slot_results *results)
1170 {
1171 slot->results = results;
1172 if (!start_active_slot(slot)) {
1173 snprintf(curl_errorstr, sizeof(curl_errorstr),
1174 "failed to start HTTP request");
1175 return HTTP_START_FAILED;
1176 }
1177
1178 run_active_slot(slot);
1179 return handle_curl_result(results);
1180 }
1181
1182 struct curl_slist *http_copy_default_headers(void)
1183 {
1184 struct curl_slist *headers = NULL, *h;
1185
1186 for (h = extra_http_headers; h; h = h->next)
1187 headers = curl_slist_append(headers, h->data);
1188
1189 return headers;
1190 }
1191
1192 static CURLcode curlinfo_strbuf(CURL *curl, CURLINFO info, struct strbuf *buf)
1193 {
1194 char *ptr;
1195 CURLcode ret;
1196
1197 strbuf_reset(buf);
1198 ret = curl_easy_getinfo(curl, info, &ptr);
1199 if (!ret && ptr)
1200 strbuf_addstr(buf, ptr);
1201 return ret;
1202 }
1203
1204 /*
1205 * Check for and extract a content-type parameter. "raw"
1206 * should be positioned at the start of the potential
1207 * parameter, with any whitespace already removed.
1208 *
1209 * "name" is the name of the parameter. The value is appended
1210 * to "out".
1211 */
1212 static int extract_param(const char *raw, const char *name,
1213 struct strbuf *out)
1214 {
1215 size_t len = strlen(name);
1216
1217 if (strncasecmp(raw, name, len))
1218 return -1;
1219 raw += len;
1220
1221 if (*raw != '=')
1222 return -1;
1223 raw++;
1224
1225 while (*raw && !isspace(*raw) && *raw != ';')
1226 strbuf_addch(out, *raw++);
1227 return 0;
1228 }
1229
1230 /*
1231 * Extract a normalized version of the content type, with any
1232 * spaces suppressed, all letters lowercased, and no trailing ";"
1233 * or parameters.
1234 *
1235 * Note that we will silently remove even invalid whitespace. For
1236 * example, "text / plain" is specifically forbidden by RFC 2616,
1237 * but "text/plain" is the only reasonable output, and this keeps
1238 * our code simple.
1239 *
1240 * If the "charset" argument is not NULL, store the value of any
1241 * charset parameter there.
1242 *
1243 * Example:
1244 * "TEXT/PLAIN; charset=utf-8" -> "text/plain", "utf-8"
1245 * "text / plain" -> "text/plain"
1246 */
1247 static void extract_content_type(struct strbuf *raw, struct strbuf *type,
1248 struct strbuf *charset)
1249 {
1250 const char *p;
1251
1252 strbuf_reset(type);
1253 strbuf_grow(type, raw->len);
1254 for (p = raw->buf; *p; p++) {
1255 if (isspace(*p))
1256 continue;
1257 if (*p == ';') {
1258 p++;
1259 break;
1260 }
1261 strbuf_addch(type, tolower(*p));
1262 }
1263
1264 if (!charset)
1265 return;
1266
1267 strbuf_reset(charset);
1268 while (*p) {
1269 while (isspace(*p) || *p == ';')
1270 p++;
1271 if (!extract_param(p, "charset", charset))
1272 return;
1273 while (*p && !isspace(*p))
1274 p++;
1275 }
1276
1277 if (!charset->len && starts_with(type->buf, "text/"))
1278 strbuf_addstr(charset, "ISO-8859-1");
1279 }
1280
1281 static void write_accept_language(struct strbuf *buf)
1282 {
1283 /*
1284 * MAX_DECIMAL_PLACES must not be larger than 3. If it is larger than
1285 * that, q-value will be smaller than 0.001, the minimum q-value the
1286 * HTTP specification allows. See
1287 * http://tools.ietf.org/html/rfc7231#section-5.3.1 for q-value.
1288 */
1289 const int MAX_DECIMAL_PLACES = 3;
1290 const int MAX_LANGUAGE_TAGS = 1000;
1291 const int MAX_ACCEPT_LANGUAGE_HEADER_SIZE = 4000;
1292 char **language_tags = NULL;
1293 int num_langs = 0;
1294 const char *s = get_preferred_languages();
1295 int i;
1296 struct strbuf tag = STRBUF_INIT;
1297
1298 /* Don't add Accept-Language header if no language is preferred. */
1299 if (!s)
1300 return;
1301
1302 /*
1303 * Split the colon-separated string of preferred languages into
1304 * language_tags array.
1305 */
1306 do {
1307 /* collect language tag */
1308 for (; *s && (isalnum(*s) || *s == '_'); s++)
1309 strbuf_addch(&tag, *s == '_' ? '-' : *s);
1310
1311 /* skip .codeset, @modifier and any other unnecessary parts */
1312 while (*s && *s != ':')
1313 s++;
1314
1315 if (tag.len) {
1316 num_langs++;
1317 REALLOC_ARRAY(language_tags, num_langs);
1318 language_tags[num_langs - 1] = strbuf_detach(&tag, NULL);
1319 if (num_langs >= MAX_LANGUAGE_TAGS - 1) /* -1 for '*' */
1320 break;
1321 }
1322 } while (*s++);
1323
1324 /* write Accept-Language header into buf */
1325 if (num_langs) {
1326 int last_buf_len = 0;
1327 int max_q;
1328 int decimal_places;
1329 char q_format[32];
1330
1331 /* add '*' */
1332 REALLOC_ARRAY(language_tags, num_langs + 1);
1333 language_tags[num_langs++] = "*"; /* it's OK; this won't be freed */
1334
1335 /* compute decimal_places */
1336 for (max_q = 1, decimal_places = 0;
1337 max_q < num_langs && decimal_places <= MAX_DECIMAL_PLACES;
1338 decimal_places++, max_q *= 10)
1339 ;
1340
1341 xsnprintf(q_format, sizeof(q_format), ";q=0.%%0%dd", decimal_places);
1342
1343 strbuf_addstr(buf, "Accept-Language: ");
1344
1345 for (i = 0; i < num_langs; i++) {
1346 if (i > 0)
1347 strbuf_addstr(buf, ", ");
1348
1349 strbuf_addstr(buf, language_tags[i]);
1350
1351 if (i > 0)
1352 strbuf_addf(buf, q_format, max_q - i);
1353
1354 if (buf->len > MAX_ACCEPT_LANGUAGE_HEADER_SIZE) {
1355 strbuf_remove(buf, last_buf_len, buf->len - last_buf_len);
1356 break;
1357 }
1358
1359 last_buf_len = buf->len;
1360 }
1361 }
1362
1363 /* free language tags -- last one is a static '*' */
1364 for (i = 0; i < num_langs - 1; i++)
1365 free(language_tags[i]);
1366 free(language_tags);
1367 }
1368
1369 /*
1370 * Get an Accept-Language header which indicates user's preferred languages.
1371 *
1372 * Examples:
1373 * LANGUAGE= -> ""
1374 * LANGUAGE=ko:en -> "Accept-Language: ko, en; q=0.9, *; q=0.1"
1375 * LANGUAGE=ko_KR.UTF-8:sr@latin -> "Accept-Language: ko-KR, sr; q=0.9, *; q=0.1"
1376 * LANGUAGE=ko LANG=en_US.UTF-8 -> "Accept-Language: ko, *; q=0.1"
1377 * LANGUAGE= LANG=en_US.UTF-8 -> "Accept-Language: en-US, *; q=0.1"
1378 * LANGUAGE= LANG=C -> ""
1379 */
1380 static const char *get_accept_language(void)
1381 {
1382 if (!cached_accept_language) {
1383 struct strbuf buf = STRBUF_INIT;
1384 write_accept_language(&buf);
1385 if (buf.len > 0)
1386 cached_accept_language = strbuf_detach(&buf, NULL);
1387 }
1388
1389 return cached_accept_language;
1390 }
1391
1392 static void http_opt_request_remainder(CURL *curl, off_t pos)
1393 {
1394 char buf[128];
1395 xsnprintf(buf, sizeof(buf), "%"PRIuMAX"-", (uintmax_t)pos);
1396 curl_easy_setopt(curl, CURLOPT_RANGE, buf);
1397 }
1398
1399 /* http_request() targets */
1400 #define HTTP_REQUEST_STRBUF 0
1401 #define HTTP_REQUEST_FILE 1
1402
1403 static int http_request(const char *url,
1404 void *result, int target,
1405 const struct http_get_options *options)
1406 {
1407 struct active_request_slot *slot;
1408 struct slot_results results;
1409 struct curl_slist *headers = http_copy_default_headers();
1410 struct strbuf buf = STRBUF_INIT;
1411 const char *accept_language;
1412 int ret;
1413
1414 slot = get_active_slot();
1415 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
1416
1417 if (result == NULL) {
1418 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
1419 } else {
1420 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
1421 curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
1422
1423 if (target == HTTP_REQUEST_FILE) {
1424 off_t posn = ftello(result);
1425 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
1426 fwrite);
1427 if (posn > 0)
1428 http_opt_request_remainder(slot->curl, posn);
1429 } else
1430 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
1431 fwrite_buffer);
1432 }
1433
1434 accept_language = get_accept_language();
1435
1436 if (accept_language)
1437 headers = curl_slist_append(headers, accept_language);
1438
1439 strbuf_addstr(&buf, "Pragma:");
1440 if (options && options->no_cache)
1441 strbuf_addstr(&buf, " no-cache");
1442 if (options && options->keep_error)
1443 curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0);
1444
1445 headers = curl_slist_append(headers, buf.buf);
1446
1447 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1448 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
1449 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
1450
1451 ret = run_one_slot(slot, &results);
1452
1453 if (options && options->content_type) {
1454 struct strbuf raw = STRBUF_INIT;
1455 curlinfo_strbuf(slot->curl, CURLINFO_CONTENT_TYPE, &raw);
1456 extract_content_type(&raw, options->content_type,
1457 options->charset);
1458 strbuf_release(&raw);
1459 }
1460
1461 if (options && options->effective_url)
1462 curlinfo_strbuf(slot->curl, CURLINFO_EFFECTIVE_URL,
1463 options->effective_url);
1464
1465 curl_slist_free_all(headers);
1466 strbuf_release(&buf);
1467
1468 return ret;
1469 }
1470
1471 /*
1472 * Update the "base" url to a more appropriate value, as deduced by
1473 * redirects seen when requesting a URL starting with "url".
1474 *
1475 * The "asked" parameter is a URL that we asked curl to access, and must begin
1476 * with "base".
1477 *
1478 * The "got" parameter is the URL that curl reported to us as where we ended
1479 * up.
1480 *
1481 * Returns 1 if we updated the base url, 0 otherwise.
1482 *
1483 * Our basic strategy is to compare "base" and "asked" to find the bits
1484 * specific to our request. We then strip those bits off of "got" to yield the
1485 * new base. So for example, if our base is "http://example.com/foo.git",
1486 * and we ask for "http://example.com/foo.git/info/refs", we might end up
1487 * with "https://other.example.com/foo.git/info/refs". We would want the
1488 * new URL to become "https://other.example.com/foo.git".
1489 *
1490 * Note that this assumes a sane redirect scheme. It's entirely possible
1491 * in the example above to end up at a URL that does not even end in
1492 * "info/refs". In such a case we simply punt, as there is not much we can
1493 * do (and such a scheme is unlikely to represent a real git repository,
1494 * which means we are likely about to abort anyway).
1495 */
1496 static int update_url_from_redirect(struct strbuf *base,
1497 const char *asked,
1498 const struct strbuf *got)
1499 {
1500 const char *tail;
1501 size_t tail_len;
1502
1503 if (!strcmp(asked, got->buf))
1504 return 0;
1505
1506 if (!skip_prefix(asked, base->buf, &tail))
1507 die("BUG: update_url_from_redirect: %s is not a superset of %s",
1508 asked, base->buf);
1509
1510 tail_len = strlen(tail);
1511
1512 if (got->len < tail_len ||
1513 strcmp(tail, got->buf + got->len - tail_len))
1514 return 0; /* insane redirect scheme */
1515
1516 strbuf_reset(base);
1517 strbuf_add(base, got->buf, got->len - tail_len);
1518 return 1;
1519 }
1520
1521 static int http_request_reauth(const char *url,
1522 void *result, int target,
1523 struct http_get_options *options)
1524 {
1525 int ret = http_request(url, result, target, options);
1526
1527 if (options && options->effective_url && options->base_url) {
1528 if (update_url_from_redirect(options->base_url,
1529 url, options->effective_url)) {
1530 credential_from_url(&http_auth, options->base_url->buf);
1531 url = options->effective_url->buf;
1532 }
1533 }
1534
1535 if (ret != HTTP_REAUTH)
1536 return ret;
1537
1538 /*
1539 * If we are using KEEP_ERROR, the previous request may have
1540 * put cruft into our output stream; we should clear it out before
1541 * making our next request. We only know how to do this for
1542 * the strbuf case, but that is enough to satisfy current callers.
1543 */
1544 if (options && options->keep_error) {
1545 switch (target) {
1546 case HTTP_REQUEST_STRBUF:
1547 strbuf_reset(result);
1548 break;
1549 default:
1550 die("BUG: HTTP_KEEP_ERROR is only supported with strbufs");
1551 }
1552 }
1553
1554 credential_fill(&http_auth);
1555
1556 return http_request(url, result, target, options);
1557 }
1558
1559 int http_get_strbuf(const char *url,
1560 struct strbuf *result,
1561 struct http_get_options *options)
1562 {
1563 return http_request_reauth(url, result, HTTP_REQUEST_STRBUF, options);
1564 }
1565
1566 /*
1567 * Downloads a URL and stores the result in the given file.
1568 *
1569 * If a previous interrupted download is detected (i.e. a previous temporary
1570 * file is still around) the download is resumed.
1571 */
1572 static int http_get_file(const char *url, const char *filename,
1573 struct http_get_options *options)
1574 {
1575 int ret;
1576 struct strbuf tmpfile = STRBUF_INIT;
1577 FILE *result;
1578
1579 strbuf_addf(&tmpfile, "%s.temp", filename);
1580 result = fopen(tmpfile.buf, "a");
1581 if (!result) {
1582 error("Unable to open local file %s", tmpfile.buf);
1583 ret = HTTP_ERROR;
1584 goto cleanup;
1585 }
1586
1587 ret = http_request_reauth(url, result, HTTP_REQUEST_FILE, options);
1588 fclose(result);
1589
1590 if (ret == HTTP_OK && finalize_object_file(tmpfile.buf, filename))
1591 ret = HTTP_ERROR;
1592 cleanup:
1593 strbuf_release(&tmpfile);
1594 return ret;
1595 }
1596
1597 int http_fetch_ref(const char *base, struct ref *ref)
1598 {
1599 struct http_get_options options = {0};
1600 char *url;
1601 struct strbuf buffer = STRBUF_INIT;
1602 int ret = -1;
1603
1604 options.no_cache = 1;
1605
1606 url = quote_ref_url(base, ref->name);
1607 if (http_get_strbuf(url, &buffer, &options) == HTTP_OK) {
1608 strbuf_rtrim(&buffer);
1609 if (buffer.len == 40)
1610 ret = get_oid_hex(buffer.buf, &ref->old_oid);
1611 else if (starts_with(buffer.buf, "ref: ")) {
1612 ref->symref = xstrdup(buffer.buf + 5);
1613 ret = 0;
1614 }
1615 }
1616
1617 strbuf_release(&buffer);
1618 free(url);
1619 return ret;
1620 }
1621
1622 /* Helpers for fetching packs */
1623 static char *fetch_pack_index(unsigned char *sha1, const char *base_url)
1624 {
1625 char *url, *tmp;
1626 struct strbuf buf = STRBUF_INIT;
1627
1628 if (http_is_verbose)
1629 fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1));
1630
1631 end_url_with_slash(&buf, base_url);
1632 strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1));
1633 url = strbuf_detach(&buf, NULL);
1634
1635 strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1));
1636 tmp = strbuf_detach(&buf, NULL);
1637
1638 if (http_get_file(url, tmp, NULL) != HTTP_OK) {
1639 error("Unable to get pack index %s", url);
1640 free(tmp);
1641 tmp = NULL;
1642 }
1643
1644 free(url);
1645 return tmp;
1646 }
1647
1648 static int fetch_and_setup_pack_index(struct packed_git **packs_head,
1649 unsigned char *sha1, const char *base_url)
1650 {
1651 struct packed_git *new_pack;
1652 char *tmp_idx = NULL;
1653 int ret;
1654
1655 if (has_pack_index(sha1)) {
1656 new_pack = parse_pack_index(sha1, sha1_pack_index_name(sha1));
1657 if (!new_pack)
1658 return -1; /* parse_pack_index() already issued error message */
1659 goto add_pack;
1660 }
1661
1662 tmp_idx = fetch_pack_index(sha1, base_url);
1663 if (!tmp_idx)
1664 return -1;
1665
1666 new_pack = parse_pack_index(sha1, tmp_idx);
1667 if (!new_pack) {
1668 unlink(tmp_idx);
1669 free(tmp_idx);
1670
1671 return -1; /* parse_pack_index() already issued error message */
1672 }
1673
1674 ret = verify_pack_index(new_pack);
1675 if (!ret) {
1676 close_pack_index(new_pack);
1677 ret = finalize_object_file(tmp_idx, sha1_pack_index_name(sha1));
1678 }
1679 free(tmp_idx);
1680 if (ret)
1681 return -1;
1682
1683 add_pack:
1684 new_pack->next = *packs_head;
1685 *packs_head = new_pack;
1686 return 0;
1687 }
1688
1689 int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
1690 {
1691 struct http_get_options options = {0};
1692 int ret = 0, i = 0;
1693 char *url, *data;
1694 struct strbuf buf = STRBUF_INIT;
1695 unsigned char sha1[20];
1696
1697 end_url_with_slash(&buf, base_url);
1698 strbuf_addstr(&buf, "objects/info/packs");
1699 url = strbuf_detach(&buf, NULL);
1700
1701 options.no_cache = 1;
1702 ret = http_get_strbuf(url, &buf, &options);
1703 if (ret != HTTP_OK)
1704 goto cleanup;
1705
1706 data = buf.buf;
1707 while (i < buf.len) {
1708 switch (data[i]) {
1709 case 'P':
1710 i++;
1711 if (i + 52 <= buf.len &&
1712 starts_with(data + i, " pack-") &&
1713 starts_with(data + i + 46, ".pack\n")) {
1714 get_sha1_hex(data + i + 6, sha1);
1715 fetch_and_setup_pack_index(packs_head, sha1,
1716 base_url);
1717 i += 51;
1718 break;
1719 }
1720 default:
1721 while (i < buf.len && data[i] != '\n')
1722 i++;
1723 }
1724 i++;
1725 }
1726
1727 cleanup:
1728 free(url);
1729 return ret;
1730 }
1731
1732 void release_http_pack_request(struct http_pack_request *preq)
1733 {
1734 if (preq->packfile != NULL) {
1735 fclose(preq->packfile);
1736 preq->packfile = NULL;
1737 }
1738 preq->slot = NULL;
1739 free(preq->url);
1740 free(preq);
1741 }
1742
1743 int finish_http_pack_request(struct http_pack_request *preq)
1744 {
1745 struct packed_git **lst;
1746 struct packed_git *p = preq->target;
1747 char *tmp_idx;
1748 size_t len;
1749 struct child_process ip = CHILD_PROCESS_INIT;
1750 const char *ip_argv[8];
1751
1752 close_pack_index(p);
1753
1754 fclose(preq->packfile);
1755 preq->packfile = NULL;
1756
1757 lst = preq->lst;
1758 while (*lst != p)
1759 lst = &((*lst)->next);
1760 *lst = (*lst)->next;
1761
1762 if (!strip_suffix(preq->tmpfile, ".pack.temp", &len))
1763 die("BUG: pack tmpfile does not end in .pack.temp?");
1764 tmp_idx = xstrfmt("%.*s.idx.temp", (int)len, preq->tmpfile);
1765
1766 ip_argv[0] = "index-pack";
1767 ip_argv[1] = "-o";
1768 ip_argv[2] = tmp_idx;
1769 ip_argv[3] = preq->tmpfile;
1770 ip_argv[4] = NULL;
1771
1772 ip.argv = ip_argv;
1773 ip.git_cmd = 1;
1774 ip.no_stdin = 1;
1775 ip.no_stdout = 1;
1776
1777 if (run_command(&ip)) {
1778 unlink(preq->tmpfile);
1779 unlink(tmp_idx);
1780 free(tmp_idx);
1781 return -1;
1782 }
1783
1784 unlink(sha1_pack_index_name(p->sha1));
1785
1786 if (finalize_object_file(preq->tmpfile, sha1_pack_name(p->sha1))
1787 || finalize_object_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
1788 free(tmp_idx);
1789 return -1;
1790 }
1791
1792 install_packed_git(p);
1793 free(tmp_idx);
1794 return 0;
1795 }
1796
1797 struct http_pack_request *new_http_pack_request(
1798 struct packed_git *target, const char *base_url)
1799 {
1800 off_t prev_posn = 0;
1801 struct strbuf buf = STRBUF_INIT;
1802 struct http_pack_request *preq;
1803
1804 preq = xcalloc(1, sizeof(*preq));
1805 preq->target = target;
1806
1807 end_url_with_slash(&buf, base_url);
1808 strbuf_addf(&buf, "objects/pack/pack-%s.pack",
1809 sha1_to_hex(target->sha1));
1810 preq->url = strbuf_detach(&buf, NULL);
1811
1812 snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp",
1813 sha1_pack_name(target->sha1));
1814 preq->packfile = fopen(preq->tmpfile, "a");
1815 if (!preq->packfile) {
1816 error("Unable to open local file %s for pack",
1817 preq->tmpfile);
1818 goto abort;
1819 }
1820
1821 preq->slot = get_active_slot();
1822 curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
1823 curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
1824 curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url);
1825 curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1826 no_pragma_header);
1827
1828 /*
1829 * If there is data present from a previous transfer attempt,
1830 * resume where it left off
1831 */
1832 prev_posn = ftello(preq->packfile);
1833 if (prev_posn>0) {
1834 if (http_is_verbose)
1835 fprintf(stderr,
1836 "Resuming fetch of pack %s at byte %"PRIuMAX"\n",
1837 sha1_to_hex(target->sha1), (uintmax_t)prev_posn);
1838 http_opt_request_remainder(preq->slot->curl, prev_posn);
1839 }
1840
1841 return preq;
1842
1843 abort:
1844 free(preq->url);
1845 free(preq);
1846 return NULL;
1847 }
1848
1849 /* Helpers for fetching objects (loose) */
1850 static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb,
1851 void *data)
1852 {
1853 unsigned char expn[4096];
1854 size_t size = eltsize * nmemb;
1855 int posn = 0;
1856 struct http_object_request *freq =
1857 (struct http_object_request *)data;
1858 do {
1859 ssize_t retval = xwrite(freq->localfile,
1860 (char *) ptr + posn, size - posn);
1861 if (retval < 0)
1862 return posn;
1863 posn += retval;
1864 } while (posn < size);
1865
1866 freq->stream.avail_in = size;
1867 freq->stream.next_in = (void *)ptr;
1868 do {
1869 freq->stream.next_out = expn;
1870 freq->stream.avail_out = sizeof(expn);
1871 freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH);
1872 git_SHA1_Update(&freq->c, expn,
1873 sizeof(expn) - freq->stream.avail_out);
1874 } while (freq->stream.avail_in && freq->zret == Z_OK);
1875 return size;
1876 }
1877
1878 struct http_object_request *new_http_object_request(const char *base_url,
1879 unsigned char *sha1)
1880 {
1881 char *hex = sha1_to_hex(sha1);
1882 const char *filename;
1883 char prevfile[PATH_MAX];
1884 int prevlocal;
1885 char prev_buf[PREV_BUF_SIZE];
1886 ssize_t prev_read = 0;
1887 off_t prev_posn = 0;
1888 struct http_object_request *freq;
1889
1890 freq = xcalloc(1, sizeof(*freq));
1891 hashcpy(freq->sha1, sha1);
1892 freq->localfile = -1;
1893
1894 filename = sha1_file_name(sha1);
1895 snprintf(freq->tmpfile, sizeof(freq->tmpfile),
1896 "%s.temp", filename);
1897
1898 snprintf(prevfile, sizeof(prevfile), "%s.prev", filename);
1899 unlink_or_warn(prevfile);
1900 rename(freq->tmpfile, prevfile);
1901 unlink_or_warn(freq->tmpfile);
1902
1903 if (freq->localfile != -1)
1904 error("fd leakage in start: %d", freq->localfile);
1905 freq->localfile = open(freq->tmpfile,
1906 O_WRONLY | O_CREAT | O_EXCL, 0666);
1907 /*
1908 * This could have failed due to the "lazy directory creation";
1909 * try to mkdir the last path component.
1910 */
1911 if (freq->localfile < 0 && errno == ENOENT) {
1912 char *dir = strrchr(freq->tmpfile, '/');
1913 if (dir) {
1914 *dir = 0;
1915 mkdir(freq->tmpfile, 0777);
1916 *dir = '/';
1917 }
1918 freq->localfile = open(freq->tmpfile,
1919 O_WRONLY | O_CREAT | O_EXCL, 0666);
1920 }
1921
1922 if (freq->localfile < 0) {
1923 error("Couldn't create temporary file %s: %s",
1924 freq->tmpfile, strerror(errno));
1925 goto abort;
1926 }
1927
1928 git_inflate_init(&freq->stream);
1929
1930 git_SHA1_Init(&freq->c);
1931
1932 freq->url = get_remote_object_url(base_url, hex, 0);
1933
1934 /*
1935 * If a previous temp file is present, process what was already
1936 * fetched.
1937 */
1938 prevlocal = open(prevfile, O_RDONLY);
1939 if (prevlocal != -1) {
1940 do {
1941 prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
1942 if (prev_read>0) {
1943 if (fwrite_sha1_file(prev_buf,
1944 1,
1945 prev_read,
1946 freq) == prev_read) {
1947 prev_posn += prev_read;
1948 } else {
1949 prev_read = -1;
1950 }
1951 }
1952 } while (prev_read > 0);
1953 close(prevlocal);
1954 }
1955 unlink_or_warn(prevfile);
1956
1957 /*
1958 * Reset inflate/SHA1 if there was an error reading the previous temp
1959 * file; also rewind to the beginning of the local file.
1960 */
1961 if (prev_read == -1) {
1962 memset(&freq->stream, 0, sizeof(freq->stream));
1963 git_inflate_init(&freq->stream);
1964 git_SHA1_Init(&freq->c);
1965 if (prev_posn>0) {
1966 prev_posn = 0;
1967 lseek(freq->localfile, 0, SEEK_SET);
1968 if (ftruncate(freq->localfile, 0) < 0) {
1969 error("Couldn't truncate temporary file %s: %s",
1970 freq->tmpfile, strerror(errno));
1971 goto abort;
1972 }
1973 }
1974 }
1975
1976 freq->slot = get_active_slot();
1977
1978 curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
1979 curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
1980 curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
1981 curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url);
1982 curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
1983
1984 /*
1985 * If we have successfully processed data from a previous fetch
1986 * attempt, only fetch the data we don't already have.
1987 */
1988 if (prev_posn>0) {
1989 if (http_is_verbose)
1990 fprintf(stderr,
1991 "Resuming fetch of object %s at byte %"PRIuMAX"\n",
1992 hex, (uintmax_t)prev_posn);
1993 http_opt_request_remainder(freq->slot->curl, prev_posn);
1994 }
1995
1996 return freq;
1997
1998 abort:
1999 free(freq->url);
2000 free(freq);
2001 return NULL;
2002 }
2003
2004 void process_http_object_request(struct http_object_request *freq)
2005 {
2006 if (freq->slot == NULL)
2007 return;
2008 freq->curl_result = freq->slot->curl_result;
2009 freq->http_code = freq->slot->http_code;
2010 freq->slot = NULL;
2011 }
2012
2013 int finish_http_object_request(struct http_object_request *freq)
2014 {
2015 struct stat st;
2016
2017 close(freq->localfile);
2018 freq->localfile = -1;
2019
2020 process_http_object_request(freq);
2021
2022 if (freq->http_code == 416) {
2023 warning("requested range invalid; we may already have all the data.");
2024 } else if (freq->curl_result != CURLE_OK) {
2025 if (stat(freq->tmpfile, &st) == 0)
2026 if (st.st_size == 0)
2027 unlink_or_warn(freq->tmpfile);
2028 return -1;
2029 }
2030
2031 git_inflate_end(&freq->stream);
2032 git_SHA1_Final(freq->real_sha1, &freq->c);
2033 if (freq->zret != Z_STREAM_END) {
2034 unlink_or_warn(freq->tmpfile);
2035 return -1;
2036 }
2037 if (hashcmp(freq->sha1, freq->real_sha1)) {
2038 unlink_or_warn(freq->tmpfile);
2039 return -1;
2040 }
2041 freq->rename =
2042 finalize_object_file(freq->tmpfile, sha1_file_name(freq->sha1));
2043
2044 return freq->rename;
2045 }
2046
2047 void abort_http_object_request(struct http_object_request *freq)
2048 {
2049 unlink_or_warn(freq->tmpfile);
2050
2051 release_http_object_request(freq);
2052 }
2053
2054 void release_http_object_request(struct http_object_request *freq)
2055 {
2056 if (freq->localfile != -1) {
2057 close(freq->localfile);
2058 freq->localfile = -1;
2059 }
2060 if (freq->url != NULL) {
2061 free(freq->url);
2062 freq->url = NULL;
2063 }
2064 if (freq->slot != NULL) {
2065 freq->slot->callback_func = NULL;
2066 freq->slot->callback_data = NULL;
2067 release_active_slot(freq->slot);
2068 freq->slot = NULL;
2069 }
2070 }
ramsay's fork of git