4 #include "run-command.h"
6 #include "credential.h"
10 size_t http_post_buffer = 16 * LARGE_PACKET_MAX;
12 #if LIBCURL_VERSION_NUM >= 0x070a06
13 #define LIBCURL_CAN_HANDLE_AUTH_ANY
16 static int min_curl_sessions = 1;
17 static int curl_session_count;
19 static int max_requests = -1;
22 #ifndef NO_CURL_EASY_DUPHANDLE
23 static CURL *curl_default;
26 #define PREV_BUF_SIZE 4096
27 #define RANGE_HEADER_SIZE 30
29 char curl_errorstr[CURL_ERROR_SIZE];
31 static int curl_ssl_verify = -1;
32 static const char *ssl_cert;
33 #if LIBCURL_VERSION_NUM >= 0x070903
34 static const char *ssl_key;
36 #if LIBCURL_VERSION_NUM >= 0x070908
37 static const char *ssl_capath;
39 static const char *ssl_cainfo;
40 static long curl_low_speed_limit = -1;
41 static long curl_low_speed_time = -1;
42 static int curl_ftp_no_epsv;
43 static const char *curl_http_proxy;
44 static const char *curl_cookie_file;
45 static struct credential http_auth = CREDENTIAL_INIT;
46 static int http_proactive_auth;
47 static const char *user_agent;
49 #if LIBCURL_VERSION_NUM >= 0x071700
50 /* Use CURLOPT_KEYPASSWD as is */
51 #elif LIBCURL_VERSION_NUM >= 0x070903
52 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
54 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
57 static struct credential cert_auth = CREDENTIAL_INIT;
58 static int ssl_cert_password_required;
60 static struct curl_slist *pragma_header;
61 static struct curl_slist *no_pragma_header;
63 static struct active_request_slot *active_queue_head;
65 size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
67 size_t size = eltsize * nmemb;
68 struct buffer *buffer = buffer_;
70 if (size > buffer->buf.len - buffer->posn)
71 size = buffer->buf.len - buffer->posn;
72 memcpy(ptr, buffer->buf.buf + buffer->posn, size);
79 curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp)
81 struct buffer *buffer = clientp;
87 case CURLIOCMD_RESTARTREAD:
92 return CURLIOE_UNKNOWNCMD;
97 size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
99 size_t size = eltsize * nmemb;
100 struct strbuf *buffer = buffer_;
102 strbuf_add(buffer, ptr, size);
106 size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf)
108 return eltsize * nmemb;
111 #ifdef USE_CURL_MULTI
112 static void process_curl_messages(void)
115 struct active_request_slot *slot;
116 CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages);
118 while (curl_message != NULL) {
119 if (curl_message->msg == CURLMSG_DONE) {
120 int curl_result = curl_message->data.result;
121 slot = active_queue_head;
122 while (slot != NULL &&
123 slot->curl != curl_message->easy_handle)
126 curl_multi_remove_handle(curlm, slot->curl);
127 slot->curl_result = curl_result;
128 finish_active_slot(slot);
130 fprintf(stderr, "Received DONE message for unknown request!\n");
133 fprintf(stderr, "Unknown CURL message received: %d\n",
134 (int)curl_message->msg);
136 curl_message = curl_multi_info_read(curlm, &num_messages);
141 static int http_options(const char *var, const char *value, void *cb)
143 if (!strcmp("http.sslverify", var)) {
144 curl_ssl_verify = git_config_bool(var, value);
147 if (!strcmp("http.sslcert", var))
148 return git_config_string(&ssl_cert, var, value);
149 #if LIBCURL_VERSION_NUM >= 0x070903
150 if (!strcmp("http.sslkey", var))
151 return git_config_string(&ssl_key, var, value);
153 #if LIBCURL_VERSION_NUM >= 0x070908
154 if (!strcmp("http.sslcapath", var))
155 return git_config_string(&ssl_capath, var, value);
157 if (!strcmp("http.sslcainfo", var))
158 return git_config_string(&ssl_cainfo, var, value);
159 if (!strcmp("http.sslcertpasswordprotected", var)) {
160 if (git_config_bool(var, value))
161 ssl_cert_password_required = 1;
164 if (!strcmp("http.minsessions", var)) {
165 min_curl_sessions = git_config_int(var, value);
166 #ifndef USE_CURL_MULTI
167 if (min_curl_sessions > 1)
168 min_curl_sessions = 1;
172 #ifdef USE_CURL_MULTI
173 if (!strcmp("http.maxrequests", var)) {
174 max_requests = git_config_int(var, value);
178 if (!strcmp("http.lowspeedlimit", var)) {
179 curl_low_speed_limit = (long)git_config_int(var, value);
182 if (!strcmp("http.lowspeedtime", var)) {
183 curl_low_speed_time = (long)git_config_int(var, value);
187 if (!strcmp("http.noepsv", var)) {
188 curl_ftp_no_epsv = git_config_bool(var, value);
191 if (!strcmp("http.proxy", var))
192 return git_config_string(&curl_http_proxy, var, value);
194 if (!strcmp("http.cookiefile", var))
195 return git_config_string(&curl_cookie_file, var, value);
197 if (!strcmp("http.postbuffer", var)) {
198 http_post_buffer = git_config_int(var, value);
199 if (http_post_buffer < LARGE_PACKET_MAX)
200 http_post_buffer = LARGE_PACKET_MAX;
204 if (!strcmp("http.useragent", var))
205 return git_config_string(&user_agent, var, value);
207 /* Fall back on the default ones */
208 return git_default_config(var, value, cb);
211 static void init_curl_http_auth(CURL *result)
213 if (http_auth.username) {
214 struct strbuf up = STRBUF_INIT;
215 credential_fill(&http_auth);
216 strbuf_addf(&up, "%s:%s",
217 http_auth.username, http_auth.password);
218 curl_easy_setopt(result, CURLOPT_USERPWD,
219 strbuf_detach(&up, NULL));
223 static int has_cert_password(void)
225 if (ssl_cert == NULL || ssl_cert_password_required != 1)
227 if (!cert_auth.password) {
228 cert_auth.protocol = xstrdup("cert");
229 cert_auth.path = xstrdup(ssl_cert);
230 credential_fill(&cert_auth);
235 static CURL *get_curl_handle(void)
237 CURL *result = curl_easy_init();
239 if (!curl_ssl_verify) {
240 curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0);
241 curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0);
243 /* Verify authenticity of the peer's certificate */
244 curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1);
245 /* The name in the cert must match whom we tried to connect */
246 curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2);
249 #if LIBCURL_VERSION_NUM >= 0x070907
250 curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
252 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
253 curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
256 if (http_proactive_auth)
257 init_curl_http_auth(result);
259 if (ssl_cert != NULL)
260 curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
261 if (has_cert_password())
262 curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password);
263 #if LIBCURL_VERSION_NUM >= 0x070903
265 curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key);
267 #if LIBCURL_VERSION_NUM >= 0x070908
268 if (ssl_capath != NULL)
269 curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath);
271 if (ssl_cainfo != NULL)
272 curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo);
273 curl_easy_setopt(result, CURLOPT_FAILONERROR, 1);
275 if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) {
276 curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT,
277 curl_low_speed_limit);
278 curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME,
279 curl_low_speed_time);
282 curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1);
283 #if LIBCURL_VERSION_NUM >= 0x071301
284 curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
285 #elif LIBCURL_VERSION_NUM >= 0x071101
286 curl_easy_setopt(result, CURLOPT_POST301, 1);
289 if (getenv("GIT_CURL_VERBOSE"))
290 curl_easy_setopt(result, CURLOPT_VERBOSE, 1);
292 curl_easy_setopt(result, CURLOPT_USERAGENT,
293 user_agent ? user_agent : GIT_HTTP_USER_AGENT);
295 if (curl_ftp_no_epsv)
296 curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0);
298 if (curl_http_proxy) {
299 curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy);
300 #if LIBCURL_VERSION_NUM >= 0x070a07
301 curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
308 static void set_from_env(const char **var, const char *envname)
310 const char *val = getenv(envname);
315 void http_init(struct remote *remote, const char *url, int proactive_auth)
317 char *low_speed_limit;
318 char *low_speed_time;
322 git_config(http_options, NULL);
324 curl_global_init(CURL_GLOBAL_ALL);
326 http_proactive_auth = proactive_auth;
328 if (remote && remote->http_proxy)
329 curl_http_proxy = xstrdup(remote->http_proxy);
331 pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache");
332 no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
334 #ifdef USE_CURL_MULTI
336 char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS");
337 if (http_max_requests != NULL)
338 max_requests = atoi(http_max_requests);
341 curlm = curl_multi_init();
343 fprintf(stderr, "Error creating curl multi handle.\n");
348 if (getenv("GIT_SSL_NO_VERIFY"))
351 set_from_env(&ssl_cert, "GIT_SSL_CERT");
352 #if LIBCURL_VERSION_NUM >= 0x070903
353 set_from_env(&ssl_key, "GIT_SSL_KEY");
355 #if LIBCURL_VERSION_NUM >= 0x070908
356 set_from_env(&ssl_capath, "GIT_SSL_CAPATH");
358 set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO");
360 set_from_env(&user_agent, "GIT_HTTP_USER_AGENT");
362 low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT");
363 if (low_speed_limit != NULL)
364 curl_low_speed_limit = strtol(low_speed_limit, NULL, 10);
365 low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME");
366 if (low_speed_time != NULL)
367 curl_low_speed_time = strtol(low_speed_time, NULL, 10);
369 if (curl_ssl_verify == -1)
372 curl_session_count = 0;
373 #ifdef USE_CURL_MULTI
374 if (max_requests < 1)
375 max_requests = DEFAULT_MAX_REQUESTS;
378 if (getenv("GIT_CURL_FTP_NO_EPSV"))
379 curl_ftp_no_epsv = 1;
382 credential_from_url(&http_auth, url);
383 if (!ssl_cert_password_required &&
384 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
385 !prefixcmp(url, "https://"))
386 ssl_cert_password_required = 1;
389 #ifndef NO_CURL_EASY_DUPHANDLE
390 curl_default = get_curl_handle();
394 void http_cleanup(void)
396 struct active_request_slot *slot = active_queue_head;
398 while (slot != NULL) {
399 struct active_request_slot *next = slot->next;
400 if (slot->curl != NULL) {
401 #ifdef USE_CURL_MULTI
402 curl_multi_remove_handle(curlm, slot->curl);
404 curl_easy_cleanup(slot->curl);
409 active_queue_head = NULL;
411 #ifndef NO_CURL_EASY_DUPHANDLE
412 curl_easy_cleanup(curl_default);
415 #ifdef USE_CURL_MULTI
416 curl_multi_cleanup(curlm);
418 curl_global_cleanup();
420 curl_slist_free_all(pragma_header);
421 pragma_header = NULL;
423 curl_slist_free_all(no_pragma_header);
424 no_pragma_header = NULL;
426 if (curl_http_proxy) {
427 free((void *)curl_http_proxy);
428 curl_http_proxy = NULL;
431 if (cert_auth.password != NULL) {
432 memset(cert_auth.password, 0, strlen(cert_auth.password));
433 free(cert_auth.password);
434 cert_auth.password = NULL;
436 ssl_cert_password_required = 0;
439 struct active_request_slot *get_active_slot(void)
441 struct active_request_slot *slot = active_queue_head;
442 struct active_request_slot *newslot;
444 #ifdef USE_CURL_MULTI
447 /* Wait for a slot to open up if the queue is full */
448 while (active_requests >= max_requests) {
449 curl_multi_perform(curlm, &num_transfers);
450 if (num_transfers < active_requests)
451 process_curl_messages();
455 while (slot != NULL && slot->in_use)
459 newslot = xmalloc(sizeof(*newslot));
460 newslot->curl = NULL;
462 newslot->next = NULL;
464 slot = active_queue_head;
466 active_queue_head = newslot;
468 while (slot->next != NULL)
470 slot->next = newslot;
475 if (slot->curl == NULL) {
476 #ifdef NO_CURL_EASY_DUPHANDLE
477 slot->curl = get_curl_handle();
479 slot->curl = curl_easy_duphandle(curl_default);
481 curl_session_count++;
486 slot->results = NULL;
487 slot->finished = NULL;
488 slot->callback_data = NULL;
489 slot->callback_func = NULL;
490 curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file);
491 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header);
492 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr);
493 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL);
494 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL);
495 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL);
496 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL);
497 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0);
498 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
503 int start_active_slot(struct active_request_slot *slot)
505 #ifdef USE_CURL_MULTI
506 CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl);
509 if (curlm_result != CURLM_OK &&
510 curlm_result != CURLM_CALL_MULTI_PERFORM) {
517 * We know there must be something to do, since we just added
520 curl_multi_perform(curlm, &num_transfers);
525 #ifdef USE_CURL_MULTI
529 struct fill_chain *next;
532 static struct fill_chain *fill_cfg;
534 void add_fill_function(void *data, int (*fill)(void *))
536 struct fill_chain *new = xmalloc(sizeof(*new));
537 struct fill_chain **linkp = &fill_cfg;
542 linkp = &(*linkp)->next;
546 void fill_active_slots(void)
548 struct active_request_slot *slot = active_queue_head;
550 while (active_requests < max_requests) {
551 struct fill_chain *fill;
552 for (fill = fill_cfg; fill; fill = fill->next)
553 if (fill->fill(fill->data))
560 while (slot != NULL) {
561 if (!slot->in_use && slot->curl != NULL
562 && curl_session_count > min_curl_sessions) {
563 curl_easy_cleanup(slot->curl);
565 curl_session_count--;
571 void step_active_slots(void)
574 CURLMcode curlm_result;
577 curlm_result = curl_multi_perform(curlm, &num_transfers);
578 } while (curlm_result == CURLM_CALL_MULTI_PERFORM);
579 if (num_transfers < active_requests) {
580 process_curl_messages();
586 void run_active_slot(struct active_request_slot *slot)
588 #ifdef USE_CURL_MULTI
593 struct timeval select_timeout;
596 slot->finished = &finished;
601 #if LIBCURL_VERSION_NUM >= 0x070f04
603 curl_multi_timeout(curlm, &curl_timeout);
604 if (curl_timeout == 0) {
606 } else if (curl_timeout == -1) {
607 select_timeout.tv_sec = 0;
608 select_timeout.tv_usec = 50000;
610 select_timeout.tv_sec = curl_timeout / 1000;
611 select_timeout.tv_usec = (curl_timeout % 1000) * 1000;
614 select_timeout.tv_sec = 0;
615 select_timeout.tv_usec = 50000;
622 curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd);
624 select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout);
628 while (slot->in_use) {
629 slot->curl_result = curl_easy_perform(slot->curl);
630 finish_active_slot(slot);
635 static void closedown_active_slot(struct active_request_slot *slot)
641 static void release_active_slot(struct active_request_slot *slot)
643 closedown_active_slot(slot);
644 if (slot->curl && curl_session_count > min_curl_sessions) {
645 #ifdef USE_CURL_MULTI
646 curl_multi_remove_handle(curlm, slot->curl);
648 curl_easy_cleanup(slot->curl);
650 curl_session_count--;
652 #ifdef USE_CURL_MULTI
657 void finish_active_slot(struct active_request_slot *slot)
659 closedown_active_slot(slot);
660 curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
662 if (slot->finished != NULL)
663 (*slot->finished) = 1;
665 /* Store slot results so they can be read after the slot is reused */
666 if (slot->results != NULL) {
667 slot->results->curl_result = slot->curl_result;
668 slot->results->http_code = slot->http_code;
671 /* Run callback if appropriate */
672 if (slot->callback_func != NULL)
673 slot->callback_func(slot->callback_data);
676 void finish_all_active_slots(void)
678 struct active_request_slot *slot = active_queue_head;
682 run_active_slot(slot);
683 slot = active_queue_head;
689 /* Helpers for modifying and creating URLs */
690 static inline int needs_quote(int ch)
692 if (((ch >= 'A') && (ch <= 'Z'))
693 || ((ch >= 'a') && (ch <= 'z'))
694 || ((ch >= '0') && (ch <= '9'))
702 static char *quote_ref_url(const char *base, const char *ref)
704 struct strbuf buf = STRBUF_INIT;
708 end_url_with_slash(&buf, base);
710 for (cp = ref; (ch = *cp) != 0; cp++)
712 strbuf_addf(&buf, "%%%02x", ch);
714 strbuf_addch(&buf, *cp);
716 return strbuf_detach(&buf, NULL);
719 void append_remote_object_url(struct strbuf *buf, const char *url,
721 int only_two_digit_prefix)
723 end_url_with_slash(buf, url);
725 strbuf_addf(buf, "objects/%.*s/", 2, hex);
726 if (!only_two_digit_prefix)
727 strbuf_addf(buf, "%s", hex+2);
730 char *get_remote_object_url(const char *url, const char *hex,
731 int only_two_digit_prefix)
733 struct strbuf buf = STRBUF_INIT;
734 append_remote_object_url(&buf, url, hex, only_two_digit_prefix);
735 return strbuf_detach(&buf, NULL);
738 /* http_request() targets */
739 #define HTTP_REQUEST_STRBUF 0
740 #define HTTP_REQUEST_FILE 1
742 static int http_request(const char *url, void *result, int target, int options)
744 struct active_request_slot *slot;
745 struct slot_results results;
746 struct curl_slist *headers = NULL;
747 struct strbuf buf = STRBUF_INIT;
750 slot = get_active_slot();
751 slot->results = &results;
752 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
754 if (result == NULL) {
755 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
757 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
758 curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
760 if (target == HTTP_REQUEST_FILE) {
761 long posn = ftell(result);
762 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
765 strbuf_addf(&buf, "Range: bytes=%ld-", posn);
766 headers = curl_slist_append(headers, buf.buf);
770 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
774 strbuf_addstr(&buf, "Pragma:");
775 if (options & HTTP_NO_CACHE)
776 strbuf_addstr(&buf, " no-cache");
778 headers = curl_slist_append(headers, buf.buf);
780 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
781 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
783 if (start_active_slot(slot)) {
784 run_active_slot(slot);
785 if (results.curl_result == CURLE_OK)
787 else if (missing_target(&results))
788 ret = HTTP_MISSING_TARGET;
789 else if (results.http_code == 401) {
790 if (http_auth.username && http_auth.password) {
791 credential_reject(&http_auth);
794 credential_fill(&http_auth);
795 init_curl_http_auth(slot->curl);
799 if (!curl_errorstr[0])
800 strlcpy(curl_errorstr,
801 curl_easy_strerror(results.curl_result),
802 sizeof(curl_errorstr));
806 error("Unable to start HTTP request for %s", url);
807 ret = HTTP_START_FAILED;
810 curl_slist_free_all(headers);
811 strbuf_release(&buf);
814 credential_approve(&http_auth);
819 static int http_request_reauth(const char *url, void *result, int target,
822 int ret = http_request(url, result, target, options);
823 if (ret != HTTP_REAUTH)
825 return http_request(url, result, target, options);
828 int http_get_strbuf(const char *url, struct strbuf *result, int options)
830 return http_request_reauth(url, result, HTTP_REQUEST_STRBUF, options);
834 * Downloads an url and stores the result in the given file.
836 * If a previous interrupted download is detected (i.e. a previous temporary
837 * file is still around) the download is resumed.
839 static int http_get_file(const char *url, const char *filename, int options)
842 struct strbuf tmpfile = STRBUF_INIT;
845 strbuf_addf(&tmpfile, "%s.temp", filename);
846 result = fopen(tmpfile.buf, "a");
848 error("Unable to open local file %s", tmpfile.buf);
853 ret = http_request_reauth(url, result, HTTP_REQUEST_FILE, options);
856 if ((ret == HTTP_OK) && move_temp_to_file(tmpfile.buf, filename))
859 strbuf_release(&tmpfile);
863 int http_error(const char *url, int ret)
865 /* http_request has already handled HTTP_START_FAILED. */
866 if (ret != HTTP_START_FAILED)
867 error("%s while accessing %s", curl_errorstr, url);
872 int http_fetch_ref(const char *base, struct ref *ref)
875 struct strbuf buffer = STRBUF_INIT;
878 url = quote_ref_url(base, ref->name);
879 if (http_get_strbuf(url, &buffer, HTTP_NO_CACHE) == HTTP_OK) {
880 strbuf_rtrim(&buffer);
881 if (buffer.len == 40)
882 ret = get_sha1_hex(buffer.buf, ref->old_sha1);
883 else if (!prefixcmp(buffer.buf, "ref: ")) {
884 ref->symref = xstrdup(buffer.buf + 5);
889 strbuf_release(&buffer);
894 /* Helpers for fetching packs */
895 static char *fetch_pack_index(unsigned char *sha1, const char *base_url)
898 struct strbuf buf = STRBUF_INIT;
901 fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1));
903 end_url_with_slash(&buf, base_url);
904 strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1));
905 url = strbuf_detach(&buf, NULL);
907 strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1));
908 tmp = strbuf_detach(&buf, NULL);
910 if (http_get_file(url, tmp, 0) != HTTP_OK) {
911 error("Unable to get pack index %s\n", url);
920 static int fetch_and_setup_pack_index(struct packed_git **packs_head,
921 unsigned char *sha1, const char *base_url)
923 struct packed_git *new_pack;
924 char *tmp_idx = NULL;
927 if (has_pack_index(sha1)) {
928 new_pack = parse_pack_index(sha1, NULL);
930 return -1; /* parse_pack_index() already issued error message */
934 tmp_idx = fetch_pack_index(sha1, base_url);
938 new_pack = parse_pack_index(sha1, tmp_idx);
943 return -1; /* parse_pack_index() already issued error message */
946 ret = verify_pack_index(new_pack);
948 close_pack_index(new_pack);
949 ret = move_temp_to_file(tmp_idx, sha1_pack_index_name(sha1));
956 new_pack->next = *packs_head;
957 *packs_head = new_pack;
961 int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
965 struct strbuf buf = STRBUF_INIT;
966 unsigned char sha1[20];
968 end_url_with_slash(&buf, base_url);
969 strbuf_addstr(&buf, "objects/info/packs");
970 url = strbuf_detach(&buf, NULL);
972 ret = http_get_strbuf(url, &buf, HTTP_NO_CACHE);
977 while (i < buf.len) {
981 if (i + 52 <= buf.len &&
982 !prefixcmp(data + i, " pack-") &&
983 !prefixcmp(data + i + 46, ".pack\n")) {
984 get_sha1_hex(data + i + 6, sha1);
985 fetch_and_setup_pack_index(packs_head, sha1,
991 while (i < buf.len && data[i] != '\n')
1002 void release_http_pack_request(struct http_pack_request *preq)
1004 if (preq->packfile != NULL) {
1005 fclose(preq->packfile);
1006 preq->packfile = NULL;
1008 if (preq->range_header != NULL) {
1009 curl_slist_free_all(preq->range_header);
1010 preq->range_header = NULL;
1016 int finish_http_pack_request(struct http_pack_request *preq)
1018 struct packed_git **lst;
1019 struct packed_git *p = preq->target;
1021 struct child_process ip;
1022 const char *ip_argv[8];
1024 close_pack_index(p);
1026 fclose(preq->packfile);
1027 preq->packfile = NULL;
1031 lst = &((*lst)->next);
1032 *lst = (*lst)->next;
1034 tmp_idx = xstrdup(preq->tmpfile);
1035 strcpy(tmp_idx + strlen(tmp_idx) - strlen(".pack.temp"),
1038 ip_argv[0] = "index-pack";
1040 ip_argv[2] = tmp_idx;
1041 ip_argv[3] = preq->tmpfile;
1044 memset(&ip, 0, sizeof(ip));
1050 if (run_command(&ip)) {
1051 unlink(preq->tmpfile);
1057 unlink(sha1_pack_index_name(p->sha1));
1059 if (move_temp_to_file(preq->tmpfile, sha1_pack_name(p->sha1))
1060 || move_temp_to_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
1065 install_packed_git(p);
1070 struct http_pack_request *new_http_pack_request(
1071 struct packed_git *target, const char *base_url)
1074 char range[RANGE_HEADER_SIZE];
1075 struct strbuf buf = STRBUF_INIT;
1076 struct http_pack_request *preq;
1078 preq = xcalloc(1, sizeof(*preq));
1079 preq->target = target;
1081 end_url_with_slash(&buf, base_url);
1082 strbuf_addf(&buf, "objects/pack/pack-%s.pack",
1083 sha1_to_hex(target->sha1));
1084 preq->url = strbuf_detach(&buf, NULL);
1086 snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp",
1087 sha1_pack_name(target->sha1));
1088 preq->packfile = fopen(preq->tmpfile, "a");
1089 if (!preq->packfile) {
1090 error("Unable to open local file %s for pack",
1095 preq->slot = get_active_slot();
1096 curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
1097 curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
1098 curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url);
1099 curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1103 * If there is data present from a previous transfer attempt,
1104 * resume where it left off
1106 prev_posn = ftell(preq->packfile);
1108 if (http_is_verbose)
1110 "Resuming fetch of pack %s at byte %ld\n",
1111 sha1_to_hex(target->sha1), prev_posn);
1112 sprintf(range, "Range: bytes=%ld-", prev_posn);
1113 preq->range_header = curl_slist_append(NULL, range);
1114 curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1115 preq->range_header);
1126 /* Helpers for fetching objects (loose) */
1127 static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb,
1130 unsigned char expn[4096];
1131 size_t size = eltsize * nmemb;
1133 struct http_object_request *freq =
1134 (struct http_object_request *)data;
1136 ssize_t retval = xwrite(freq->localfile,
1137 (char *) ptr + posn, size - posn);
1141 } while (posn < size);
1143 freq->stream.avail_in = size;
1144 freq->stream.next_in = (void *)ptr;
1146 freq->stream.next_out = expn;
1147 freq->stream.avail_out = sizeof(expn);
1148 freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH);
1149 git_SHA1_Update(&freq->c, expn,
1150 sizeof(expn) - freq->stream.avail_out);
1151 } while (freq->stream.avail_in && freq->zret == Z_OK);
1155 struct http_object_request *new_http_object_request(const char *base_url,
1156 unsigned char *sha1)
1158 char *hex = sha1_to_hex(sha1);
1160 char prevfile[PATH_MAX];
1162 char prev_buf[PREV_BUF_SIZE];
1163 ssize_t prev_read = 0;
1165 char range[RANGE_HEADER_SIZE];
1166 struct curl_slist *range_header = NULL;
1167 struct http_object_request *freq;
1169 freq = xcalloc(1, sizeof(*freq));
1170 hashcpy(freq->sha1, sha1);
1171 freq->localfile = -1;
1173 filename = sha1_file_name(sha1);
1174 snprintf(freq->tmpfile, sizeof(freq->tmpfile),
1175 "%s.temp", filename);
1177 snprintf(prevfile, sizeof(prevfile), "%s.prev", filename);
1178 unlink_or_warn(prevfile);
1179 rename(freq->tmpfile, prevfile);
1180 unlink_or_warn(freq->tmpfile);
1182 if (freq->localfile != -1)
1183 error("fd leakage in start: %d", freq->localfile);
1184 freq->localfile = open(freq->tmpfile,
1185 O_WRONLY | O_CREAT | O_EXCL, 0666);
1187 * This could have failed due to the "lazy directory creation";
1188 * try to mkdir the last path component.
1190 if (freq->localfile < 0 && errno == ENOENT) {
1191 char *dir = strrchr(freq->tmpfile, '/');
1194 mkdir(freq->tmpfile, 0777);
1197 freq->localfile = open(freq->tmpfile,
1198 O_WRONLY | O_CREAT | O_EXCL, 0666);
1201 if (freq->localfile < 0) {
1202 error("Couldn't create temporary file %s: %s",
1203 freq->tmpfile, strerror(errno));
1207 git_inflate_init(&freq->stream);
1209 git_SHA1_Init(&freq->c);
1211 freq->url = get_remote_object_url(base_url, hex, 0);
1214 * If a previous temp file is present, process what was already
1217 prevlocal = open(prevfile, O_RDONLY);
1218 if (prevlocal != -1) {
1220 prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
1222 if (fwrite_sha1_file(prev_buf,
1225 freq) == prev_read) {
1226 prev_posn += prev_read;
1231 } while (prev_read > 0);
1234 unlink_or_warn(prevfile);
1237 * Reset inflate/SHA1 if there was an error reading the previous temp
1238 * file; also rewind to the beginning of the local file.
1240 if (prev_read == -1) {
1241 memset(&freq->stream, 0, sizeof(freq->stream));
1242 git_inflate_init(&freq->stream);
1243 git_SHA1_Init(&freq->c);
1246 lseek(freq->localfile, 0, SEEK_SET);
1247 if (ftruncate(freq->localfile, 0) < 0) {
1248 error("Couldn't truncate temporary file %s: %s",
1249 freq->tmpfile, strerror(errno));
1255 freq->slot = get_active_slot();
1257 curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
1258 curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
1259 curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
1260 curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url);
1261 curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
1264 * If we have successfully processed data from a previous fetch
1265 * attempt, only fetch the data we don't already have.
1268 if (http_is_verbose)
1270 "Resuming fetch of object %s at byte %ld\n",
1272 sprintf(range, "Range: bytes=%ld-", prev_posn);
1273 range_header = curl_slist_append(range_header, range);
1274 curl_easy_setopt(freq->slot->curl,
1275 CURLOPT_HTTPHEADER, range_header);
1286 void process_http_object_request(struct http_object_request *freq)
1288 if (freq->slot == NULL)
1290 freq->curl_result = freq->slot->curl_result;
1291 freq->http_code = freq->slot->http_code;
1295 int finish_http_object_request(struct http_object_request *freq)
1299 close(freq->localfile);
1300 freq->localfile = -1;
1302 process_http_object_request(freq);
1304 if (freq->http_code == 416) {
1305 warning("requested range invalid; we may already have all the data.");
1306 } else if (freq->curl_result != CURLE_OK) {
1307 if (stat(freq->tmpfile, &st) == 0)
1308 if (st.st_size == 0)
1309 unlink_or_warn(freq->tmpfile);
1313 git_inflate_end(&freq->stream);
1314 git_SHA1_Final(freq->real_sha1, &freq->c);
1315 if (freq->zret != Z_STREAM_END) {
1316 unlink_or_warn(freq->tmpfile);
1319 if (hashcmp(freq->sha1, freq->real_sha1)) {
1320 unlink_or_warn(freq->tmpfile);
1324 move_temp_to_file(freq->tmpfile, sha1_file_name(freq->sha1));
1326 return freq->rename;
1329 void abort_http_object_request(struct http_object_request *freq)
1331 unlink_or_warn(freq->tmpfile);
1333 release_http_object_request(freq);
1336 void release_http_object_request(struct http_object_request *freq)
1338 if (freq->localfile != -1) {
1339 close(freq->localfile);
1340 freq->localfile = -1;
1342 if (freq->url != NULL) {
1346 if (freq->slot != NULL) {
1347 freq->slot->callback_func = NULL;
1348 freq->slot->callback_data = NULL;
1349 release_active_slot(freq->slot);