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Merge branch 'dw/diff-no-index-doc'
[git/mingw/4msysgit.git] / http.c
blobf3e1439d58a00328ece38a6eead63309fe7f58ca
1 #include "http.h"
2 #include "pack.h"
3 #include "sideband.h"
4 #include "run-command.h"
5 #include "url.h"
6 #include "urlmatch.h"
7 #include "credential.h"
8 #include "version.h"
9 #include "pkt-line.h"
10
11 int active_requests;
12 int http_is_verbose;
13 size_t http_post_buffer = 16 * LARGE_PACKET_MAX;
14
15 #if LIBCURL_VERSION_NUM >= 0x070a06
16 #define LIBCURL_CAN_HANDLE_AUTH_ANY
17 #endif
18
19 static int min_curl_sessions = 1;
20 static int curl_session_count;
21 #ifdef USE_CURL_MULTI
22 static int max_requests = -1;
23 static CURLM *curlm;
24 #endif
25 #ifndef NO_CURL_EASY_DUPHANDLE
26 static CURL *curl_default;
27 #endif
28
29 #define PREV_BUF_SIZE 4096
30 #define RANGE_HEADER_SIZE 30
31
32 char curl_errorstr[CURL_ERROR_SIZE];
33
34 static int curl_ssl_verify = -1;
35 static int curl_ssl_try;
36 static const char *ssl_cert;
37 #if LIBCURL_VERSION_NUM >= 0x070903
38 static const char *ssl_key;
39 #endif
40 #if LIBCURL_VERSION_NUM >= 0x070908
41 static const char *ssl_capath;
42 #endif
43 static const char *ssl_cainfo;
44 static long curl_low_speed_limit = -1;
45 static long curl_low_speed_time = -1;
46 static int curl_ftp_no_epsv;
47 static const char *curl_http_proxy;
48 static const char *curl_cookie_file;
49 static int curl_save_cookies;
50 static struct credential http_auth = CREDENTIAL_INIT;
51 static int http_proactive_auth;
52 static const char *user_agent;
53
54 #if LIBCURL_VERSION_NUM >= 0x071700
55 /* Use CURLOPT_KEYPASSWD as is */
56 #elif LIBCURL_VERSION_NUM >= 0x070903
57 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
58 #else
59 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
60 #endif
61
62 static struct credential cert_auth = CREDENTIAL_INIT;
63 static int ssl_cert_password_required;
64
65 static struct curl_slist *pragma_header;
66 static struct curl_slist *no_pragma_header;
67
68 static struct active_request_slot *active_queue_head;
69
70 size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
71 {
72 size_t size = eltsize * nmemb;
73 struct buffer *buffer = buffer_;
74
75 if (size > buffer->buf.len - buffer->posn)
76 size = buffer->buf.len - buffer->posn;
77 memcpy(ptr, buffer->buf.buf + buffer->posn, size);
78 buffer->posn += size;
79
80 return size;
81 }
82
83 #ifndef NO_CURL_IOCTL
84 curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp)
85 {
86 struct buffer *buffer = clientp;
87
88 switch (cmd) {
89 case CURLIOCMD_NOP:
90 return CURLIOE_OK;
91
92 case CURLIOCMD_RESTARTREAD:
93 buffer->posn = 0;
94 return CURLIOE_OK;
95
96 default:
97 return CURLIOE_UNKNOWNCMD;
98 }
99 }
100 #endif
101
102 size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
103 {
104 size_t size = eltsize * nmemb;
105 struct strbuf *buffer = buffer_;
106
107 strbuf_add(buffer, ptr, size);
108 return size;
109 }
110
111 size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf)
112 {
113 return eltsize * nmemb;
114 }
115
116 #ifdef USE_CURL_MULTI
117 static void process_curl_messages(void)
118 {
119 int num_messages;
120 struct active_request_slot *slot;
121 CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages);
122
123 while (curl_message != NULL) {
124 if (curl_message->msg == CURLMSG_DONE) {
125 int curl_result = curl_message->data.result;
126 slot = active_queue_head;
127 while (slot != NULL &&
128 slot->curl != curl_message->easy_handle)
129 slot = slot->next;
130 if (slot != NULL) {
131 curl_multi_remove_handle(curlm, slot->curl);
132 slot->curl_result = curl_result;
133 finish_active_slot(slot);
134 } else {
135 fprintf(stderr, "Received DONE message for unknown request!\n");
136 }
137 } else {
138 fprintf(stderr, "Unknown CURL message received: %d\n",
139 (int)curl_message->msg);
140 }
141 curl_message = curl_multi_info_read(curlm, &num_messages);
142 }
143 }
144 #endif
145
146 static int http_options(const char *var, const char *value, void *cb)
147 {
148 if (!strcmp("http.sslverify", var)) {
149 curl_ssl_verify = git_config_bool(var, value);
150 return 0;
151 }
152 if (!strcmp("http.sslcert", var))
153 return git_config_string(&ssl_cert, var, value);
154 #if LIBCURL_VERSION_NUM >= 0x070903
155 if (!strcmp("http.sslkey", var))
156 return git_config_string(&ssl_key, var, value);
157 #endif
158 #if LIBCURL_VERSION_NUM >= 0x070908
159 if (!strcmp("http.sslcapath", var))
160 return git_config_string(&ssl_capath, var, value);
161 #endif
162 if (!strcmp("http.sslcainfo", var))
163 return git_config_string(&ssl_cainfo, var, value);
164 if (!strcmp("http.sslcertpasswordprotected", var)) {
165 ssl_cert_password_required = git_config_bool(var, value);
166 return 0;
167 }
168 if (!strcmp("http.ssltry", var)) {
169 curl_ssl_try = git_config_bool(var, value);
170 return 0;
171 }
172 if (!strcmp("http.minsessions", var)) {
173 min_curl_sessions = git_config_int(var, value);
174 #ifndef USE_CURL_MULTI
175 if (min_curl_sessions > 1)
176 min_curl_sessions = 1;
177 #endif
178 return 0;
179 }
180 #ifdef USE_CURL_MULTI
181 if (!strcmp("http.maxrequests", var)) {
182 max_requests = git_config_int(var, value);
183 return 0;
184 }
185 #endif
186 if (!strcmp("http.lowspeedlimit", var)) {
187 curl_low_speed_limit = (long)git_config_int(var, value);
188 return 0;
189 }
190 if (!strcmp("http.lowspeedtime", var)) {
191 curl_low_speed_time = (long)git_config_int(var, value);
192 return 0;
193 }
194
195 if (!strcmp("http.noepsv", var)) {
196 curl_ftp_no_epsv = git_config_bool(var, value);
197 return 0;
198 }
199 if (!strcmp("http.proxy", var))
200 return git_config_string(&curl_http_proxy, var, value);
201
202 if (!strcmp("http.cookiefile", var))
203 return git_config_string(&curl_cookie_file, var, value);
204 if (!strcmp("http.savecookies", var)) {
205 curl_save_cookies = git_config_bool(var, value);
206 return 0;
207 }
208
209 if (!strcmp("http.postbuffer", var)) {
210 http_post_buffer = git_config_int(var, value);
211 if (http_post_buffer < LARGE_PACKET_MAX)
212 http_post_buffer = LARGE_PACKET_MAX;
213 return 0;
214 }
215
216 if (!strcmp("http.useragent", var))
217 return git_config_string(&user_agent, var, value);
218
219 /* Fall back on the default ones */
220 return git_default_config(var, value, cb);
221 }
222
223 static void init_curl_http_auth(CURL *result)
224 {
225 if (!http_auth.username)
226 return;
227
228 credential_fill(&http_auth);
229
230 #if LIBCURL_VERSION_NUM >= 0x071301
231 curl_easy_setopt(result, CURLOPT_USERNAME, http_auth.username);
232 curl_easy_setopt(result, CURLOPT_PASSWORD, http_auth.password);
233 #else
234 {
235 static struct strbuf up = STRBUF_INIT;
236 /*
237 * Note that we assume we only ever have a single set of
238 * credentials in a given program run, so we do not have
239 * to worry about updating this buffer, only setting its
240 * initial value.
241 */
242 if (!up.len)
243 strbuf_addf(&up, "%s:%s",
244 http_auth.username, http_auth.password);
245 curl_easy_setopt(result, CURLOPT_USERPWD, up.buf);
246 }
247 #endif
248 }
249
250 static int has_cert_password(void)
251 {
252 if (ssl_cert == NULL || ssl_cert_password_required != 1)
253 return 0;
254 if (!cert_auth.password) {
255 cert_auth.protocol = xstrdup("cert");
256 cert_auth.username = xstrdup("");
257 cert_auth.path = xstrdup(ssl_cert);
258 credential_fill(&cert_auth);
259 }
260 return 1;
261 }
262
263 static CURL *get_curl_handle(void)
264 {
265 CURL *result = curl_easy_init();
266
267 if (!curl_ssl_verify) {
268 curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0);
269 curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0);
270 } else {
271 /* Verify authenticity of the peer's certificate */
272 curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1);
273 /* The name in the cert must match whom we tried to connect */
274 curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2);
275 }
276
277 #if LIBCURL_VERSION_NUM >= 0x070907
278 curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
279 #endif
280 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
281 curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
282 #endif
283
284 if (http_proactive_auth)
285 init_curl_http_auth(result);
286
287 if (ssl_cert != NULL)
288 curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
289 if (has_cert_password())
290 curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password);
291 #if LIBCURL_VERSION_NUM >= 0x070903
292 if (ssl_key != NULL)
293 curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key);
294 #endif
295 #if LIBCURL_VERSION_NUM >= 0x070908
296 if (ssl_capath != NULL)
297 curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath);
298 #endif
299 if (ssl_cainfo != NULL)
300 curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo);
301
302 if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) {
303 curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT,
304 curl_low_speed_limit);
305 curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME,
306 curl_low_speed_time);
307 }
308
309 curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1);
310 #if LIBCURL_VERSION_NUM >= 0x071301
311 curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
312 #elif LIBCURL_VERSION_NUM >= 0x071101
313 curl_easy_setopt(result, CURLOPT_POST301, 1);
314 #endif
315
316 if (getenv("GIT_CURL_VERBOSE"))
317 curl_easy_setopt(result, CURLOPT_VERBOSE, 1);
318
319 curl_easy_setopt(result, CURLOPT_USERAGENT,
320 user_agent ? user_agent : git_user_agent());
321
322 if (curl_ftp_no_epsv)
323 curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0);
324
325 #ifdef CURLOPT_USE_SSL
326 if (curl_ssl_try)
327 curl_easy_setopt(result, CURLOPT_USE_SSL, CURLUSESSL_TRY);
328 #endif
329
330 if (curl_http_proxy) {
331 curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy);
332 curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
333 }
334
335 return result;
336 }
337
338 static void set_from_env(const char **var, const char *envname)
339 {
340 const char *val = getenv(envname);
341 if (val)
342 *var = val;
343 }
344
345 void http_init(struct remote *remote, const char *url, int proactive_auth)
346 {
347 char *low_speed_limit;
348 char *low_speed_time;
349 char *normalized_url;
350 struct urlmatch_config config = { STRING_LIST_INIT_DUP };
351
352 config.section = "http";
353 config.key = NULL;
354 config.collect_fn = http_options;
355 config.cascade_fn = git_default_config;
356 config.cb = NULL;
357
358 http_is_verbose = 0;
359 normalized_url = url_normalize(url, &config.url);
360
361 git_config(urlmatch_config_entry, &config);
362 free(normalized_url);
363
364 curl_global_init(CURL_GLOBAL_ALL);
365
366 http_proactive_auth = proactive_auth;
367
368 if (remote && remote->http_proxy)
369 curl_http_proxy = xstrdup(remote->http_proxy);
370
371 pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache");
372 no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
373
374 #ifdef USE_CURL_MULTI
375 {
376 char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS");
377 if (http_max_requests != NULL)
378 max_requests = atoi(http_max_requests);
379 }
380
381 curlm = curl_multi_init();
382 if (curlm == NULL) {
383 fprintf(stderr, "Error creating curl multi handle.\n");
384 exit(1);
385 }
386 #endif
387
388 if (getenv("GIT_SSL_NO_VERIFY"))
389 curl_ssl_verify = 0;
390
391 set_from_env(&ssl_cert, "GIT_SSL_CERT");
392 #if LIBCURL_VERSION_NUM >= 0x070903
393 set_from_env(&ssl_key, "GIT_SSL_KEY");
394 #endif
395 #if LIBCURL_VERSION_NUM >= 0x070908
396 set_from_env(&ssl_capath, "GIT_SSL_CAPATH");
397 #endif
398 set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO");
399
400 set_from_env(&user_agent, "GIT_HTTP_USER_AGENT");
401
402 low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT");
403 if (low_speed_limit != NULL)
404 curl_low_speed_limit = strtol(low_speed_limit, NULL, 10);
405 low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME");
406 if (low_speed_time != NULL)
407 curl_low_speed_time = strtol(low_speed_time, NULL, 10);
408
409 if (curl_ssl_verify == -1)
410 curl_ssl_verify = 1;
411
412 curl_session_count = 0;
413 #ifdef USE_CURL_MULTI
414 if (max_requests < 1)
415 max_requests = DEFAULT_MAX_REQUESTS;
416 #endif
417
418 if (getenv("GIT_CURL_FTP_NO_EPSV"))
419 curl_ftp_no_epsv = 1;
420
421 if (url) {
422 credential_from_url(&http_auth, url);
423 if (!ssl_cert_password_required &&
424 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
425 !prefixcmp(url, "https://"))
426 ssl_cert_password_required = 1;
427 }
428
429 #ifndef NO_CURL_EASY_DUPHANDLE
430 curl_default = get_curl_handle();
431 #endif
432 }
433
434 void http_cleanup(void)
435 {
436 struct active_request_slot *slot = active_queue_head;
437
438 while (slot != NULL) {
439 struct active_request_slot *next = slot->next;
440 if (slot->curl != NULL) {
441 #ifdef USE_CURL_MULTI
442 curl_multi_remove_handle(curlm, slot->curl);
443 #endif
444 curl_easy_cleanup(slot->curl);
445 }
446 free(slot);
447 slot = next;
448 }
449 active_queue_head = NULL;
450
451 #ifndef NO_CURL_EASY_DUPHANDLE
452 curl_easy_cleanup(curl_default);
453 #endif
454
455 #ifdef USE_CURL_MULTI
456 curl_multi_cleanup(curlm);
457 #endif
458 curl_global_cleanup();
459
460 curl_slist_free_all(pragma_header);
461 pragma_header = NULL;
462
463 curl_slist_free_all(no_pragma_header);
464 no_pragma_header = NULL;
465
466 if (curl_http_proxy) {
467 free((void *)curl_http_proxy);
468 curl_http_proxy = NULL;
469 }
470
471 if (cert_auth.password != NULL) {
472 memset(cert_auth.password, 0, strlen(cert_auth.password));
473 free(cert_auth.password);
474 cert_auth.password = NULL;
475 }
476 ssl_cert_password_required = 0;
477 }
478
479 struct active_request_slot *get_active_slot(void)
480 {
481 struct active_request_slot *slot = active_queue_head;
482 struct active_request_slot *newslot;
483
484 #ifdef USE_CURL_MULTI
485 int num_transfers;
486
487 /* Wait for a slot to open up if the queue is full */
488 while (active_requests >= max_requests) {
489 curl_multi_perform(curlm, &num_transfers);
490 if (num_transfers < active_requests)
491 process_curl_messages();
492 }
493 #endif
494
495 while (slot != NULL && slot->in_use)
496 slot = slot->next;
497
498 if (slot == NULL) {
499 newslot = xmalloc(sizeof(*newslot));
500 newslot->curl = NULL;
501 newslot->in_use = 0;
502 newslot->next = NULL;
503
504 slot = active_queue_head;
505 if (slot == NULL) {
506 active_queue_head = newslot;
507 } else {
508 while (slot->next != NULL)
509 slot = slot->next;
510 slot->next = newslot;
511 }
512 slot = newslot;
513 }
514
515 if (slot->curl == NULL) {
516 #ifdef NO_CURL_EASY_DUPHANDLE
517 slot->curl = get_curl_handle();
518 #else
519 slot->curl = curl_easy_duphandle(curl_default);
520 #endif
521 curl_session_count++;
522 }
523
524 active_requests++;
525 slot->in_use = 1;
526 slot->results = NULL;
527 slot->finished = NULL;
528 slot->callback_data = NULL;
529 slot->callback_func = NULL;
530 curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file);
531 if (curl_save_cookies)
532 curl_easy_setopt(slot->curl, CURLOPT_COOKIEJAR, curl_cookie_file);
533 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header);
534 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr);
535 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL);
536 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL);
537 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL);
538 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL);
539 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0);
540 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
541 curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 1);
542 if (http_auth.password)
543 init_curl_http_auth(slot->curl);
544
545 return slot;
546 }
547
548 int start_active_slot(struct active_request_slot *slot)
549 {
550 #ifdef USE_CURL_MULTI
551 CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl);
552 int num_transfers;
553
554 if (curlm_result != CURLM_OK &&
555 curlm_result != CURLM_CALL_MULTI_PERFORM) {
556 active_requests--;
557 slot->in_use = 0;
558 return 0;
559 }
560
561 /*
562 * We know there must be something to do, since we just added
563 * something.
564 */
565 curl_multi_perform(curlm, &num_transfers);
566 #endif
567 return 1;
568 }
569
570 #ifdef USE_CURL_MULTI
571 struct fill_chain {
572 void *data;
573 int (*fill)(void *);
574 struct fill_chain *next;
575 };
576
577 static struct fill_chain *fill_cfg;
578
579 void add_fill_function(void *data, int (*fill)(void *))
580 {
581 struct fill_chain *new = xmalloc(sizeof(*new));
582 struct fill_chain **linkp = &fill_cfg;
583 new->data = data;
584 new->fill = fill;
585 new->next = NULL;
586 while (*linkp)
587 linkp = &(*linkp)->next;
588 *linkp = new;
589 }
590
591 void fill_active_slots(void)
592 {
593 struct active_request_slot *slot = active_queue_head;
594
595 while (active_requests < max_requests) {
596 struct fill_chain *fill;
597 for (fill = fill_cfg; fill; fill = fill->next)
598 if (fill->fill(fill->data))
599 break;
600
601 if (!fill)
602 break;
603 }
604
605 while (slot != NULL) {
606 if (!slot->in_use && slot->curl != NULL
607 && curl_session_count > min_curl_sessions) {
608 curl_easy_cleanup(slot->curl);
609 slot->curl = NULL;
610 curl_session_count--;
611 }
612 slot = slot->next;
613 }
614 }
615
616 void step_active_slots(void)
617 {
618 int num_transfers;
619 CURLMcode curlm_result;
620
621 do {
622 curlm_result = curl_multi_perform(curlm, &num_transfers);
623 } while (curlm_result == CURLM_CALL_MULTI_PERFORM);
624 if (num_transfers < active_requests) {
625 process_curl_messages();
626 fill_active_slots();
627 }
628 }
629 #endif
630
631 void run_active_slot(struct active_request_slot *slot)
632 {
633 #ifdef USE_CURL_MULTI
634 fd_set readfds;
635 fd_set writefds;
636 fd_set excfds;
637 int max_fd;
638 struct timeval select_timeout;
639 int finished = 0;
640
641 slot->finished = &finished;
642 while (!finished) {
643 step_active_slots();
644
645 if (slot->in_use) {
646 #if LIBCURL_VERSION_NUM >= 0x070f04
647 long curl_timeout;
648 curl_multi_timeout(curlm, &curl_timeout);
649 if (curl_timeout == 0) {
650 continue;
651 } else if (curl_timeout == -1) {
652 select_timeout.tv_sec = 0;
653 select_timeout.tv_usec = 50000;
654 } else {
655 select_timeout.tv_sec = curl_timeout / 1000;
656 select_timeout.tv_usec = (curl_timeout % 1000) * 1000;
657 }
658 #else
659 select_timeout.tv_sec = 0;
660 select_timeout.tv_usec = 50000;
661 #endif
662
663 max_fd = -1;
664 FD_ZERO(&readfds);
665 FD_ZERO(&writefds);
666 FD_ZERO(&excfds);
667 curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd);
668
669 /*
670 * It can happen that curl_multi_timeout returns a pathologically
671 * long timeout when curl_multi_fdset returns no file descriptors
672 * to read. See commit message for more details.
673 */
674 if (max_fd < 0 &&
675 (select_timeout.tv_sec > 0 ||
676 select_timeout.tv_usec > 50000)) {
677 select_timeout.tv_sec = 0;
678 select_timeout.tv_usec = 50000;
679 }
680
681 select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout);
682 }
683 }
684 #else
685 while (slot->in_use) {
686 slot->curl_result = curl_easy_perform(slot->curl);
687 finish_active_slot(slot);
688 }
689 #endif
690 }
691
692 static void closedown_active_slot(struct active_request_slot *slot)
693 {
694 active_requests--;
695 slot->in_use = 0;
696 }
697
698 static void release_active_slot(struct active_request_slot *slot)
699 {
700 closedown_active_slot(slot);
701 if (slot->curl && curl_session_count > min_curl_sessions) {
702 #ifdef USE_CURL_MULTI
703 curl_multi_remove_handle(curlm, slot->curl);
704 #endif
705 curl_easy_cleanup(slot->curl);
706 slot->curl = NULL;
707 curl_session_count--;
708 }
709 #ifdef USE_CURL_MULTI
710 fill_active_slots();
711 #endif
712 }
713
714 void finish_active_slot(struct active_request_slot *slot)
715 {
716 closedown_active_slot(slot);
717 curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
718
719 if (slot->finished != NULL)
720 (*slot->finished) = 1;
721
722 /* Store slot results so they can be read after the slot is reused */
723 if (slot->results != NULL) {
724 slot->results->curl_result = slot->curl_result;
725 slot->results->http_code = slot->http_code;
726 }
727
728 /* Run callback if appropriate */
729 if (slot->callback_func != NULL)
730 slot->callback_func(slot->callback_data);
731 }
732
733 void finish_all_active_slots(void)
734 {
735 struct active_request_slot *slot = active_queue_head;
736
737 while (slot != NULL)
738 if (slot->in_use) {
739 run_active_slot(slot);
740 slot = active_queue_head;
741 } else {
742 slot = slot->next;
743 }
744 }
745
746 /* Helpers for modifying and creating URLs */
747 static inline int needs_quote(int ch)
748 {
749 if (((ch >= 'A') && (ch <= 'Z'))
750 || ((ch >= 'a') && (ch <= 'z'))
751 || ((ch >= '0') && (ch <= '9'))
752 || (ch == '/')
753 || (ch == '-')
754 || (ch == '.'))
755 return 0;
756 return 1;
757 }
758
759 static char *quote_ref_url(const char *base, const char *ref)
760 {
761 struct strbuf buf = STRBUF_INIT;
762 const char *cp;
763 int ch;
764
765 end_url_with_slash(&buf, base);
766
767 for (cp = ref; (ch = *cp) != 0; cp++)
768 if (needs_quote(ch))
769 strbuf_addf(&buf, "%%%02x", ch);
770 else
771 strbuf_addch(&buf, *cp);
772
773 return strbuf_detach(&buf, NULL);
774 }
775
776 void append_remote_object_url(struct strbuf *buf, const char *url,
777 const char *hex,
778 int only_two_digit_prefix)
779 {
780 end_url_with_slash(buf, url);
781
782 strbuf_addf(buf, "objects/%.*s/", 2, hex);
783 if (!only_two_digit_prefix)
784 strbuf_addf(buf, "%s", hex+2);
785 }
786
787 char *get_remote_object_url(const char *url, const char *hex,
788 int only_two_digit_prefix)
789 {
790 struct strbuf buf = STRBUF_INIT;
791 append_remote_object_url(&buf, url, hex, only_two_digit_prefix);
792 return strbuf_detach(&buf, NULL);
793 }
794
795 int handle_curl_result(struct slot_results *results)
796 {
797 /*
798 * If we see a failing http code with CURLE_OK, we have turned off
799 * FAILONERROR (to keep the server's custom error response), and should
800 * translate the code into failure here.
801 */
802 if (results->curl_result == CURLE_OK &&
803 results->http_code >= 400) {
804 results->curl_result = CURLE_HTTP_RETURNED_ERROR;
805 /*
806 * Normally curl will already have put the "reason phrase"
807 * from the server into curl_errorstr; unfortunately without
808 * FAILONERROR it is lost, so we can give only the numeric
809 * status code.
810 */
811 snprintf(curl_errorstr, sizeof(curl_errorstr),
812 "The requested URL returned error: %ld",
813 results->http_code);
814 }
815
816 if (results->curl_result == CURLE_OK) {
817 credential_approve(&http_auth);
818 return HTTP_OK;
819 } else if (missing_target(results))
820 return HTTP_MISSING_TARGET;
821 else if (results->http_code == 401) {
822 if (http_auth.username && http_auth.password) {
823 credential_reject(&http_auth);
824 return HTTP_NOAUTH;
825 } else {
826 credential_fill(&http_auth);
827 return HTTP_REAUTH;
828 }
829 } else {
830 #if LIBCURL_VERSION_NUM >= 0x070c00
831 if (!curl_errorstr[0])
832 strlcpy(curl_errorstr,
833 curl_easy_strerror(results->curl_result),
834 sizeof(curl_errorstr));
835 #endif
836 return HTTP_ERROR;
837 }
838 }
839
840 /* http_request() targets */
841 #define HTTP_REQUEST_STRBUF 0
842 #define HTTP_REQUEST_FILE 1
843
844 static int http_request(const char *url, struct strbuf *type,
845 void *result, int target, int options)
846 {
847 struct active_request_slot *slot;
848 struct slot_results results;
849 struct curl_slist *headers = NULL;
850 struct strbuf buf = STRBUF_INIT;
851 int ret;
852
853 slot = get_active_slot();
854 slot->results = &results;
855 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
856
857 if (result == NULL) {
858 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
859 } else {
860 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
861 curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
862
863 if (target == HTTP_REQUEST_FILE) {
864 long posn = ftell(result);
865 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
866 fwrite);
867 if (posn > 0) {
868 strbuf_addf(&buf, "Range: bytes=%ld-", posn);
869 headers = curl_slist_append(headers, buf.buf);
870 strbuf_reset(&buf);
871 }
872 } else
873 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
874 fwrite_buffer);
875 }
876
877 strbuf_addstr(&buf, "Pragma:");
878 if (options & HTTP_NO_CACHE)
879 strbuf_addstr(&buf, " no-cache");
880 if (options & HTTP_KEEP_ERROR)
881 curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0);
882
883 headers = curl_slist_append(headers, buf.buf);
884
885 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
886 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
887 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
888
889 if (start_active_slot(slot)) {
890 run_active_slot(slot);
891 ret = handle_curl_result(&results);
892 } else {
893 snprintf(curl_errorstr, sizeof(curl_errorstr),
894 "failed to start HTTP request");
895 ret = HTTP_START_FAILED;
896 }
897
898 if (type) {
899 char *t;
900 strbuf_reset(type);
901 curl_easy_getinfo(slot->curl, CURLINFO_CONTENT_TYPE, &t);
902 if (t)
903 strbuf_addstr(type, t);
904 }
905
906 curl_slist_free_all(headers);
907 strbuf_release(&buf);
908
909 return ret;
910 }
911
912 static int http_request_reauth(const char *url,
913 struct strbuf *type,
914 void *result, int target,
915 int options)
916 {
917 int ret = http_request(url, type, result, target, options);
918 if (ret != HTTP_REAUTH)
919 return ret;
920
921 /*
922 * If we are using KEEP_ERROR, the previous request may have
923 * put cruft into our output stream; we should clear it out before
924 * making our next request. We only know how to do this for
925 * the strbuf case, but that is enough to satisfy current callers.
926 */
927 if (options & HTTP_KEEP_ERROR) {
928 switch (target) {
929 case HTTP_REQUEST_STRBUF:
930 strbuf_reset(result);
931 break;
932 default:
933 die("BUG: HTTP_KEEP_ERROR is only supported with strbufs");
934 }
935 }
936 return http_request(url, type, result, target, options);
937 }
938
939 int http_get_strbuf(const char *url,
940 struct strbuf *type,
941 struct strbuf *result, int options)
942 {
943 return http_request_reauth(url, type, result,
944 HTTP_REQUEST_STRBUF, options);
945 }
946
947 /*
948 * Downloads a URL and stores the result in the given file.
949 *
950 * If a previous interrupted download is detected (i.e. a previous temporary
951 * file is still around) the download is resumed.
952 */
953 static int http_get_file(const char *url, const char *filename, int options)
954 {
955 int ret;
956 struct strbuf tmpfile = STRBUF_INIT;
957 FILE *result;
958
959 strbuf_addf(&tmpfile, "%s.temp", filename);
960 result = fopen(tmpfile.buf, "a");
961 if (! result) {
962 error("Unable to open local file %s", tmpfile.buf);
963 ret = HTTP_ERROR;
964 goto cleanup;
965 }
966
967 ret = http_request_reauth(url, NULL, result, HTTP_REQUEST_FILE, options);
968 fclose(result);
969
970 if ((ret == HTTP_OK) && move_temp_to_file(tmpfile.buf, filename))
971 ret = HTTP_ERROR;
972 cleanup:
973 strbuf_release(&tmpfile);
974 return ret;
975 }
976
977 int http_fetch_ref(const char *base, struct ref *ref)
978 {
979 char *url;
980 struct strbuf buffer = STRBUF_INIT;
981 int ret = -1;
982
983 url = quote_ref_url(base, ref->name);
984 if (http_get_strbuf(url, NULL, &buffer, HTTP_NO_CACHE) == HTTP_OK) {
985 strbuf_rtrim(&buffer);
986 if (buffer.len == 40)
987 ret = get_sha1_hex(buffer.buf, ref->old_sha1);
988 else if (!prefixcmp(buffer.buf, "ref: ")) {
989 ref->symref = xstrdup(buffer.buf + 5);
990 ret = 0;
991 }
992 }
993
994 strbuf_release(&buffer);
995 free(url);
996 return ret;
997 }
998
999 /* Helpers for fetching packs */
1000 static char *fetch_pack_index(unsigned char *sha1, const char *base_url)
1001 {
1002 char *url, *tmp;
1003 struct strbuf buf = STRBUF_INIT;
1004
1005 if (http_is_verbose)
1006 fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1));
1007
1008 end_url_with_slash(&buf, base_url);
1009 strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1));
1010 url = strbuf_detach(&buf, NULL);
1011
1012 strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1));
1013 tmp = strbuf_detach(&buf, NULL);
1014
1015 if (http_get_file(url, tmp, 0) != HTTP_OK) {
1016 error("Unable to get pack index %s", url);
1017 free(tmp);
1018 tmp = NULL;
1019 }
1020
1021 free(url);
1022 return tmp;
1023 }
1024
1025 static int fetch_and_setup_pack_index(struct packed_git **packs_head,
1026 unsigned char *sha1, const char *base_url)
1027 {
1028 struct packed_git *new_pack;
1029 char *tmp_idx = NULL;
1030 int ret;
1031
1032 if (has_pack_index(sha1)) {
1033 new_pack = parse_pack_index(sha1, NULL);
1034 if (!new_pack)
1035 return -1; /* parse_pack_index() already issued error message */
1036 goto add_pack;
1037 }
1038
1039 tmp_idx = fetch_pack_index(sha1, base_url);
1040 if (!tmp_idx)
1041 return -1;
1042
1043 new_pack = parse_pack_index(sha1, tmp_idx);
1044 if (!new_pack) {
1045 unlink(tmp_idx);
1046 free(tmp_idx);
1047
1048 return -1; /* parse_pack_index() already issued error message */
1049 }
1050
1051 ret = verify_pack_index(new_pack);
1052 if (!ret) {
1053 close_pack_index(new_pack);
1054 ret = move_temp_to_file(tmp_idx, sha1_pack_index_name(sha1));
1055 }
1056 free(tmp_idx);
1057 if (ret)
1058 return -1;
1059
1060 add_pack:
1061 new_pack->next = *packs_head;
1062 *packs_head = new_pack;
1063 return 0;
1064 }
1065
1066 int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
1067 {
1068 int ret = 0, i = 0;
1069 char *url, *data;
1070 struct strbuf buf = STRBUF_INIT;
1071 unsigned char sha1[20];
1072
1073 end_url_with_slash(&buf, base_url);
1074 strbuf_addstr(&buf, "objects/info/packs");
1075 url = strbuf_detach(&buf, NULL);
1076
1077 ret = http_get_strbuf(url, NULL, &buf, HTTP_NO_CACHE);
1078 if (ret != HTTP_OK)
1079 goto cleanup;
1080
1081 data = buf.buf;
1082 while (i < buf.len) {
1083 switch (data[i]) {
1084 case 'P':
1085 i++;
1086 if (i + 52 <= buf.len &&
1087 !prefixcmp(data + i, " pack-") &&
1088 !prefixcmp(data + i + 46, ".pack\n")) {
1089 get_sha1_hex(data + i + 6, sha1);
1090 fetch_and_setup_pack_index(packs_head, sha1,
1091 base_url);
1092 i += 51;
1093 break;
1094 }
1095 default:
1096 while (i < buf.len && data[i] != '\n')
1097 i++;
1098 }
1099 i++;
1100 }
1101
1102 cleanup:
1103 free(url);
1104 return ret;
1105 }
1106
1107 void release_http_pack_request(struct http_pack_request *preq)
1108 {
1109 if (preq->packfile != NULL) {
1110 fclose(preq->packfile);
1111 preq->packfile = NULL;
1112 }
1113 if (preq->range_header != NULL) {
1114 curl_slist_free_all(preq->range_header);
1115 preq->range_header = NULL;
1116 }
1117 preq->slot = NULL;
1118 free(preq->url);
1119 }
1120
1121 int finish_http_pack_request(struct http_pack_request *preq)
1122 {
1123 struct packed_git **lst;
1124 struct packed_git *p = preq->target;
1125 char *tmp_idx;
1126 struct child_process ip;
1127 const char *ip_argv[8];
1128
1129 close_pack_index(p);
1130
1131 fclose(preq->packfile);
1132 preq->packfile = NULL;
1133
1134 lst = preq->lst;
1135 while (*lst != p)
1136 lst = &((*lst)->next);
1137 *lst = (*lst)->next;
1138
1139 tmp_idx = xstrdup(preq->tmpfile);
1140 strcpy(tmp_idx + strlen(tmp_idx) - strlen(".pack.temp"),
1141 ".idx.temp");
1142
1143 ip_argv[0] = "index-pack";
1144 ip_argv[1] = "-o";
1145 ip_argv[2] = tmp_idx;
1146 ip_argv[3] = preq->tmpfile;
1147 ip_argv[4] = NULL;
1148
1149 memset(&ip, 0, sizeof(ip));
1150 ip.argv = ip_argv;
1151 ip.git_cmd = 1;
1152 ip.no_stdin = 1;
1153 ip.no_stdout = 1;
1154
1155 if (run_command(&ip)) {
1156 unlink(preq->tmpfile);
1157 unlink(tmp_idx);
1158 free(tmp_idx);
1159 return -1;
1160 }
1161
1162 unlink(sha1_pack_index_name(p->sha1));
1163
1164 if (move_temp_to_file(preq->tmpfile, sha1_pack_name(p->sha1))
1165 || move_temp_to_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
1166 free(tmp_idx);
1167 return -1;
1168 }
1169
1170 install_packed_git(p);
1171 free(tmp_idx);
1172 return 0;
1173 }
1174
1175 struct http_pack_request *new_http_pack_request(
1176 struct packed_git *target, const char *base_url)
1177 {
1178 long prev_posn = 0;
1179 char range[RANGE_HEADER_SIZE];
1180 struct strbuf buf = STRBUF_INIT;
1181 struct http_pack_request *preq;
1182
1183 preq = xcalloc(1, sizeof(*preq));
1184 preq->target = target;
1185
1186 end_url_with_slash(&buf, base_url);
1187 strbuf_addf(&buf, "objects/pack/pack-%s.pack",
1188 sha1_to_hex(target->sha1));
1189 preq->url = strbuf_detach(&buf, NULL);
1190
1191 snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp",
1192 sha1_pack_name(target->sha1));
1193 preq->packfile = fopen(preq->tmpfile, "a");
1194 if (!preq->packfile) {
1195 error("Unable to open local file %s for pack",
1196 preq->tmpfile);
1197 goto abort;
1198 }
1199
1200 preq->slot = get_active_slot();
1201 curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
1202 curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
1203 curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url);
1204 curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1205 no_pragma_header);
1206
1207 /*
1208 * If there is data present from a previous transfer attempt,
1209 * resume where it left off
1210 */
1211 prev_posn = ftell(preq->packfile);
1212 if (prev_posn>0) {
1213 if (http_is_verbose)
1214 fprintf(stderr,
1215 "Resuming fetch of pack %s at byte %ld\n",
1216 sha1_to_hex(target->sha1), prev_posn);
1217 sprintf(range, "Range: bytes=%ld-", prev_posn);
1218 preq->range_header = curl_slist_append(NULL, range);
1219 curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1220 preq->range_header);
1221 }
1222
1223 return preq;
1224
1225 abort:
1226 free(preq->url);
1227 free(preq);
1228 return NULL;
1229 }
1230
1231 /* Helpers for fetching objects (loose) */
1232 static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb,
1233 void *data)
1234 {
1235 unsigned char expn[4096];
1236 size_t size = eltsize * nmemb;
1237 int posn = 0;
1238 struct http_object_request *freq =
1239 (struct http_object_request *)data;
1240 do {
1241 ssize_t retval = xwrite(freq->localfile,
1242 (char *) ptr + posn, size - posn);
1243 if (retval < 0)
1244 return posn;
1245 posn += retval;
1246 } while (posn < size);
1247
1248 freq->stream.avail_in = size;
1249 freq->stream.next_in = (void *)ptr;
1250 do {
1251 freq->stream.next_out = expn;
1252 freq->stream.avail_out = sizeof(expn);
1253 freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH);
1254 git_SHA1_Update(&freq->c, expn,
1255 sizeof(expn) - freq->stream.avail_out);
1256 } while (freq->stream.avail_in && freq->zret == Z_OK);
1257 return size;
1258 }
1259
1260 struct http_object_request *new_http_object_request(const char *base_url,
1261 unsigned char *sha1)
1262 {
1263 char *hex = sha1_to_hex(sha1);
1264 char *filename;
1265 char prevfile[PATH_MAX];
1266 int prevlocal;
1267 char prev_buf[PREV_BUF_SIZE];
1268 ssize_t prev_read = 0;
1269 long prev_posn = 0;
1270 char range[RANGE_HEADER_SIZE];
1271 struct curl_slist *range_header = NULL;
1272 struct http_object_request *freq;
1273
1274 freq = xcalloc(1, sizeof(*freq));
1275 hashcpy(freq->sha1, sha1);
1276 freq->localfile = -1;
1277
1278 filename = sha1_file_name(sha1);
1279 snprintf(freq->tmpfile, sizeof(freq->tmpfile),
1280 "%s.temp", filename);
1281
1282 snprintf(prevfile, sizeof(prevfile), "%s.prev", filename);
1283 unlink_or_warn(prevfile);
1284 rename(freq->tmpfile, prevfile);
1285 unlink_or_warn(freq->tmpfile);
1286
1287 if (freq->localfile != -1)
1288 error("fd leakage in start: %d", freq->localfile);
1289 freq->localfile = open(freq->tmpfile,
1290 O_WRONLY | O_CREAT | O_EXCL, 0666);
1291 /*
1292 * This could have failed due to the "lazy directory creation";
1293 * try to mkdir the last path component.
1294 */
1295 if (freq->localfile < 0 && errno == ENOENT) {
1296 char *dir = strrchr(freq->tmpfile, '/');
1297 if (dir) {
1298 *dir = 0;
1299 mkdir(freq->tmpfile, 0777);
1300 *dir = '/';
1301 }
1302 freq->localfile = open(freq->tmpfile,
1303 O_WRONLY | O_CREAT | O_EXCL, 0666);
1304 }
1305
1306 if (freq->localfile < 0) {
1307 error("Couldn't create temporary file %s: %s",
1308 freq->tmpfile, strerror(errno));
1309 goto abort;
1310 }
1311
1312 git_inflate_init(&freq->stream);
1313
1314 git_SHA1_Init(&freq->c);
1315
1316 freq->url = get_remote_object_url(base_url, hex, 0);
1317
1318 /*
1319 * If a previous temp file is present, process what was already
1320 * fetched.
1321 */
1322 prevlocal = open(prevfile, O_RDONLY);
1323 if (prevlocal != -1) {
1324 do {
1325 prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
1326 if (prev_read>0) {
1327 if (fwrite_sha1_file(prev_buf,
1328 1,
1329 prev_read,
1330 freq) == prev_read) {
1331 prev_posn += prev_read;
1332 } else {
1333 prev_read = -1;
1334 }
1335 }
1336 } while (prev_read > 0);
1337 close(prevlocal);
1338 }
1339 unlink_or_warn(prevfile);
1340
1341 /*
1342 * Reset inflate/SHA1 if there was an error reading the previous temp
1343 * file; also rewind to the beginning of the local file.
1344 */
1345 if (prev_read == -1) {
1346 memset(&freq->stream, 0, sizeof(freq->stream));
1347 git_inflate_init(&freq->stream);
1348 git_SHA1_Init(&freq->c);
1349 if (prev_posn>0) {
1350 prev_posn = 0;
1351 lseek(freq->localfile, 0, SEEK_SET);
1352 if (ftruncate(freq->localfile, 0) < 0) {
1353 error("Couldn't truncate temporary file %s: %s",
1354 freq->tmpfile, strerror(errno));
1355 goto abort;
1356 }
1357 }
1358 }
1359
1360 freq->slot = get_active_slot();
1361
1362 curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
1363 curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
1364 curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
1365 curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url);
1366 curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
1367
1368 /*
1369 * If we have successfully processed data from a previous fetch
1370 * attempt, only fetch the data we don't already have.
1371 */
1372 if (prev_posn>0) {
1373 if (http_is_verbose)
1374 fprintf(stderr,
1375 "Resuming fetch of object %s at byte %ld\n",
1376 hex, prev_posn);
1377 sprintf(range, "Range: bytes=%ld-", prev_posn);
1378 range_header = curl_slist_append(range_header, range);
1379 curl_easy_setopt(freq->slot->curl,
1380 CURLOPT_HTTPHEADER, range_header);
1381 }
1382
1383 return freq;
1384
1385 abort:
1386 free(freq->url);
1387 free(freq);
1388 return NULL;
1389 }
1390
1391 void process_http_object_request(struct http_object_request *freq)
1392 {
1393 if (freq->slot == NULL)
1394 return;
1395 freq->curl_result = freq->slot->curl_result;
1396 freq->http_code = freq->slot->http_code;
1397 freq->slot = NULL;
1398 }
1399
1400 int finish_http_object_request(struct http_object_request *freq)
1401 {
1402 struct stat st;
1403
1404 close(freq->localfile);
1405 freq->localfile = -1;
1406
1407 process_http_object_request(freq);
1408
1409 if (freq->http_code == 416) {
1410 warning("requested range invalid; we may already have all the data.");
1411 } else if (freq->curl_result != CURLE_OK) {
1412 if (stat(freq->tmpfile, &st) == 0)
1413 if (st.st_size == 0)
1414 unlink_or_warn(freq->tmpfile);
1415 return -1;
1416 }
1417
1418 git_inflate_end(&freq->stream);
1419 git_SHA1_Final(freq->real_sha1, &freq->c);
1420 if (freq->zret != Z_STREAM_END) {
1421 unlink_or_warn(freq->tmpfile);
1422 return -1;
1423 }
1424 if (hashcmp(freq->sha1, freq->real_sha1)) {
1425 unlink_or_warn(freq->tmpfile);
1426 return -1;
1427 }
1428 freq->rename =
1429 move_temp_to_file(freq->tmpfile, sha1_file_name(freq->sha1));
1430
1431 return freq->rename;
1432 }
1433
1434 void abort_http_object_request(struct http_object_request *freq)
1435 {
1436 unlink_or_warn(freq->tmpfile);
1437
1438 release_http_object_request(freq);
1439 }
1440
1441 void release_http_object_request(struct http_object_request *freq)
1442 {
1443 if (freq->localfile != -1) {
1444 close(freq->localfile);
1445 freq->localfile = -1;
1446 }
1447 if (freq->url != NULL) {
1448 free(freq->url);
1449 freq->url = NULL;
1450 }
1451 if (freq->slot != NULL) {
1452 freq->slot->callback_func = NULL;
1453 freq->slot->callback_data = NULL;
1454 release_active_slot(freq->slot);
1455 freq->slot = NULL;
1456 }
1457 }
The MinGW fork, forked for msysGit