4 #include "run-command.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 char *user_name, *user_pass, *description;
46 static const char *user_agent;
48 #if LIBCURL_VERSION_NUM >= 0x071700
49 /* Use CURLOPT_KEYPASSWD as is */
50 #elif LIBCURL_VERSION_NUM >= 0x070903
51 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
53 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
56 static char *ssl_cert_password;
57 static int ssl_cert_password_required;
59 static struct curl_slist *pragma_header;
60 static struct curl_slist *no_pragma_header;
62 static struct active_request_slot *active_queue_head;
64 size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
66 size_t size = eltsize * nmemb;
67 struct buffer *buffer = buffer_;
69 if (size > buffer->buf.len - buffer->posn)
70 size = buffer->buf.len - buffer->posn;
71 memcpy(ptr, buffer->buf.buf + buffer->posn, size);
78 curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp)
80 struct buffer *buffer = clientp;
86 case CURLIOCMD_RESTARTREAD:
91 return CURLIOE_UNKNOWNCMD;
96 size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
98 size_t size = eltsize * nmemb;
99 struct strbuf *buffer = buffer_;
101 strbuf_add(buffer, ptr, size);
106 size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf)
109 return eltsize * nmemb;
112 #ifdef USE_CURL_MULTI
113 static void process_curl_messages(void)
116 struct active_request_slot *slot;
117 CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages);
119 while (curl_message != NULL) {
120 if (curl_message->msg == CURLMSG_DONE) {
121 int curl_result = curl_message->data.result;
122 slot = active_queue_head;
123 while (slot != NULL &&
124 slot->curl != curl_message->easy_handle)
127 curl_multi_remove_handle(curlm, slot->curl);
128 slot->curl_result = curl_result;
129 finish_active_slot(slot);
131 fprintf(stderr, "Received DONE message for unknown request!\n");
134 fprintf(stderr, "Unknown CURL message received: %d\n",
135 (int)curl_message->msg);
137 curl_message = curl_multi_info_read(curlm, &num_messages);
142 static char *git_getpass_with_description(const char *what, const char *desc)
144 struct strbuf prompt = STRBUF_INIT;
148 strbuf_addf(&prompt, "%s for '%s': ", what, desc);
150 strbuf_addf(&prompt, "%s: ", what);
152 * NEEDSWORK: for usernames, we should do something less magical that
153 * actually echoes the characters. However, we need to read from
154 * /dev/tty and not stdio, which is not portable (but getpass will do
155 * it for us). http.c uses the same workaround.
157 r = git_getpass(prompt.buf);
159 strbuf_release(&prompt);
163 static int http_options(const char *var, const char *value, void *cb)
165 if (!strcmp("http.sslverify", var)) {
166 curl_ssl_verify = git_config_bool(var, value);
169 if (!strcmp("http.sslcert", var))
170 return git_config_string(&ssl_cert, var, value);
171 #if LIBCURL_VERSION_NUM >= 0x070903
172 if (!strcmp("http.sslkey", var))
173 return git_config_string(&ssl_key, var, value);
175 #if LIBCURL_VERSION_NUM >= 0x070908
176 if (!strcmp("http.sslcapath", var))
177 return git_config_string(&ssl_capath, var, value);
179 if (!strcmp("http.sslcainfo", var))
180 return git_config_string(&ssl_cainfo, var, value);
181 if (!strcmp("http.sslcertpasswordprotected", var)) {
182 if (git_config_bool(var, value))
183 ssl_cert_password_required = 1;
186 if (!strcmp("http.minsessions", var)) {
187 min_curl_sessions = git_config_int(var, value);
188 #ifndef USE_CURL_MULTI
189 if (min_curl_sessions > 1)
190 min_curl_sessions = 1;
194 #ifdef USE_CURL_MULTI
195 if (!strcmp("http.maxrequests", var)) {
196 max_requests = git_config_int(var, value);
200 if (!strcmp("http.lowspeedlimit", var)) {
201 curl_low_speed_limit = (long)git_config_int(var, value);
204 if (!strcmp("http.lowspeedtime", var)) {
205 curl_low_speed_time = (long)git_config_int(var, value);
209 if (!strcmp("http.noepsv", var)) {
210 curl_ftp_no_epsv = git_config_bool(var, value);
213 if (!strcmp("http.proxy", var))
214 return git_config_string(&curl_http_proxy, var, value);
216 if (!strcmp("http.cookiefile", var))
217 return git_config_string(&curl_cookie_file, var, value);
219 if (!strcmp("http.postbuffer", var)) {
220 http_post_buffer = git_config_int(var, value);
221 if (http_post_buffer < LARGE_PACKET_MAX)
222 http_post_buffer = LARGE_PACKET_MAX;
226 if (!strcmp("http.useragent", var))
227 return git_config_string(&user_agent, var, value);
229 /* Fall back on the default ones */
230 return git_default_config(var, value, cb);
233 static void init_curl_http_auth(CURL *result)
236 struct strbuf up = STRBUF_INIT;
238 user_pass = xstrdup(git_getpass_with_description("Password", description));
239 strbuf_addf(&up, "%s:%s", user_name, user_pass);
240 curl_easy_setopt(result, CURLOPT_USERPWD,
241 strbuf_detach(&up, NULL));
245 static int has_cert_password(void)
247 if (ssl_cert_password != NULL)
249 if (ssl_cert == NULL || ssl_cert_password_required != 1)
251 /* Only prompt the user once. */
252 ssl_cert_password_required = -1;
253 ssl_cert_password = git_getpass_with_description("Certificate Password", description);
254 if (ssl_cert_password != NULL) {
255 ssl_cert_password = xstrdup(ssl_cert_password);
261 static CURL *get_curl_handle(void)
263 CURL *result = curl_easy_init();
265 if (!curl_ssl_verify) {
266 curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0);
267 curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0);
269 /* Verify authenticity of the peer's certificate */
270 curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1);
271 /* The name in the cert must match whom we tried to connect */
272 curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2);
275 #if LIBCURL_VERSION_NUM >= 0x070907
276 curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
278 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
279 curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
282 if (ssl_cert != NULL)
283 curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
284 if (has_cert_password())
285 curl_easy_setopt(result, CURLOPT_KEYPASSWD, ssl_cert_password);
286 #if LIBCURL_VERSION_NUM >= 0x070903
288 curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key);
290 #if LIBCURL_VERSION_NUM >= 0x070908
291 if (ssl_capath != NULL)
292 curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath);
294 if (ssl_cainfo != NULL)
295 curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo);
296 curl_easy_setopt(result, CURLOPT_FAILONERROR, 1);
298 if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) {
299 curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT,
300 curl_low_speed_limit);
301 curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME,
302 curl_low_speed_time);
305 curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1);
306 #if LIBCURL_VERSION_NUM >= 0x071301
307 curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
308 #elif LIBCURL_VERSION_NUM >= 0x071101
309 curl_easy_setopt(result, CURLOPT_POST301, 1);
312 if (getenv("GIT_CURL_VERBOSE"))
313 curl_easy_setopt(result, CURLOPT_VERBOSE, 1);
315 curl_easy_setopt(result, CURLOPT_USERAGENT,
316 user_agent ? user_agent : GIT_HTTP_USER_AGENT);
318 if (curl_ftp_no_epsv)
319 curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0);
322 curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy);
327 static void http_auth_init(const char *url)
329 const char *at, *colon, *cp, *slash, *host;
331 cp = strstr(url, "://");
336 * Ok, the URL looks like "proto://something". Which one?
337 * "proto://<user>:<pass>@<host>/...",
338 * "proto://<user>@<host>/...", or just
339 * "proto://<host>/..."?
342 at = strchr(cp, '@');
343 colon = strchr(cp, ':');
344 slash = strchrnul(cp, '/');
345 if (!at || slash <= at) {
346 /* No credentials, but we may have to ask for some later */
349 else if (!colon || at <= colon) {
351 user_name = url_decode_mem(cp, at - cp);
355 user_name = url_decode_mem(cp, colon - cp);
356 user_pass = url_decode_mem(colon + 1, at - (colon + 1));
360 description = url_decode_mem(host, slash - host);
363 static void set_from_env(const char **var, const char *envname)
365 const char *val = getenv(envname);
370 void http_init(struct remote *remote, const char *url)
372 char *low_speed_limit;
373 char *low_speed_time;
377 git_config(http_options, NULL);
379 curl_global_init(CURL_GLOBAL_ALL);
381 if (remote && remote->http_proxy)
382 curl_http_proxy = xstrdup(remote->http_proxy);
384 pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache");
385 no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
387 #ifdef USE_CURL_MULTI
389 char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS");
390 if (http_max_requests != NULL)
391 max_requests = atoi(http_max_requests);
394 curlm = curl_multi_init();
396 fprintf(stderr, "Error creating curl multi handle.\n");
401 if (getenv("GIT_SSL_NO_VERIFY"))
404 set_from_env(&ssl_cert, "GIT_SSL_CERT");
405 #if LIBCURL_VERSION_NUM >= 0x070903
406 set_from_env(&ssl_key, "GIT_SSL_KEY");
408 #if LIBCURL_VERSION_NUM >= 0x070908
409 set_from_env(&ssl_capath, "GIT_SSL_CAPATH");
411 set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO");
413 set_from_env(&user_agent, "GIT_HTTP_USER_AGENT");
415 low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT");
416 if (low_speed_limit != NULL)
417 curl_low_speed_limit = strtol(low_speed_limit, NULL, 10);
418 low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME");
419 if (low_speed_time != NULL)
420 curl_low_speed_time = strtol(low_speed_time, NULL, 10);
422 if (curl_ssl_verify == -1)
425 curl_session_count = 0;
426 #ifdef USE_CURL_MULTI
427 if (max_requests < 1)
428 max_requests = DEFAULT_MAX_REQUESTS;
431 if (getenv("GIT_CURL_FTP_NO_EPSV"))
432 curl_ftp_no_epsv = 1;
436 if (!ssl_cert_password_required &&
437 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
438 !prefixcmp(url, "https://"))
439 ssl_cert_password_required = 1;
442 #ifndef NO_CURL_EASY_DUPHANDLE
443 curl_default = get_curl_handle();
447 void http_cleanup(void)
449 struct active_request_slot *slot = active_queue_head;
451 while (slot != NULL) {
452 struct active_request_slot *next = slot->next;
453 if (slot->curl != NULL) {
454 #ifdef USE_CURL_MULTI
455 curl_multi_remove_handle(curlm, slot->curl);
457 curl_easy_cleanup(slot->curl);
462 active_queue_head = NULL;
464 #ifndef NO_CURL_EASY_DUPHANDLE
465 curl_easy_cleanup(curl_default);
468 #ifdef USE_CURL_MULTI
469 curl_multi_cleanup(curlm);
471 curl_global_cleanup();
473 curl_slist_free_all(pragma_header);
474 pragma_header = NULL;
476 curl_slist_free_all(no_pragma_header);
477 no_pragma_header = NULL;
479 if (curl_http_proxy) {
480 free((void *)curl_http_proxy);
481 curl_http_proxy = NULL;
484 if (ssl_cert_password != NULL) {
485 memset(ssl_cert_password, 0, strlen(ssl_cert_password));
486 free(ssl_cert_password);
487 ssl_cert_password = NULL;
489 ssl_cert_password_required = 0;
492 struct active_request_slot *get_active_slot(void)
494 struct active_request_slot *slot = active_queue_head;
495 struct active_request_slot *newslot;
497 #ifdef USE_CURL_MULTI
500 /* Wait for a slot to open up if the queue is full */
501 while (active_requests >= max_requests) {
502 curl_multi_perform(curlm, &num_transfers);
503 if (num_transfers < active_requests)
504 process_curl_messages();
508 while (slot != NULL && slot->in_use)
512 newslot = xmalloc(sizeof(*newslot));
513 newslot->curl = NULL;
515 newslot->next = NULL;
517 slot = active_queue_head;
519 active_queue_head = newslot;
521 while (slot->next != NULL)
523 slot->next = newslot;
528 if (slot->curl == NULL) {
529 #ifdef NO_CURL_EASY_DUPHANDLE
530 slot->curl = get_curl_handle();
532 slot->curl = curl_easy_duphandle(curl_default);
534 curl_session_count++;
540 slot->results = NULL;
541 slot->finished = NULL;
542 slot->callback_data = NULL;
543 slot->callback_func = NULL;
544 curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file);
545 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header);
546 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr);
547 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL);
548 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL);
549 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL);
550 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL);
551 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0);
552 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
557 int start_active_slot(struct active_request_slot *slot)
559 #ifdef USE_CURL_MULTI
560 CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl);
563 if (curlm_result != CURLM_OK &&
564 curlm_result != CURLM_CALL_MULTI_PERFORM) {
571 * We know there must be something to do, since we just added
574 curl_multi_perform(curlm, &num_transfers);
579 #ifdef USE_CURL_MULTI
583 struct fill_chain *next;
586 static struct fill_chain *fill_cfg;
588 void add_fill_function(void *data, int (*fill)(void *))
590 struct fill_chain *new = xmalloc(sizeof(*new));
591 struct fill_chain **linkp = &fill_cfg;
596 linkp = &(*linkp)->next;
600 void fill_active_slots(void)
602 struct active_request_slot *slot = active_queue_head;
604 while (active_requests < max_requests) {
605 struct fill_chain *fill;
606 for (fill = fill_cfg; fill; fill = fill->next)
607 if (fill->fill(fill->data))
614 while (slot != NULL) {
615 if (!slot->in_use && slot->curl != NULL
616 && curl_session_count > min_curl_sessions) {
617 curl_easy_cleanup(slot->curl);
619 curl_session_count--;
625 void step_active_slots(void)
628 CURLMcode curlm_result;
631 curlm_result = curl_multi_perform(curlm, &num_transfers);
632 } while (curlm_result == CURLM_CALL_MULTI_PERFORM);
633 if (num_transfers < active_requests) {
634 process_curl_messages();
640 void run_active_slot(struct active_request_slot *slot)
642 #ifdef USE_CURL_MULTI
649 struct timeval select_timeout;
652 slot->finished = &finished;
657 if (!data_received && slot->local != NULL) {
658 current_pos = ftell(slot->local);
659 if (current_pos > last_pos)
661 last_pos = current_pos;
664 if (slot->in_use && !data_received) {
669 select_timeout.tv_sec = 0;
670 select_timeout.tv_usec = 50000;
671 select(max_fd, &readfds, &writefds,
672 &excfds, &select_timeout);
676 while (slot->in_use) {
677 slot->curl_result = curl_easy_perform(slot->curl);
678 finish_active_slot(slot);
683 static void closedown_active_slot(struct active_request_slot *slot)
689 static void release_active_slot(struct active_request_slot *slot)
691 closedown_active_slot(slot);
692 if (slot->curl && curl_session_count > min_curl_sessions) {
693 #ifdef USE_CURL_MULTI
694 curl_multi_remove_handle(curlm, slot->curl);
696 curl_easy_cleanup(slot->curl);
698 curl_session_count--;
700 #ifdef USE_CURL_MULTI
705 void finish_active_slot(struct active_request_slot *slot)
707 closedown_active_slot(slot);
708 curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
710 if (slot->finished != NULL)
711 (*slot->finished) = 1;
713 /* Store slot results so they can be read after the slot is reused */
714 if (slot->results != NULL) {
715 slot->results->curl_result = slot->curl_result;
716 slot->results->http_code = slot->http_code;
719 /* Run callback if appropriate */
720 if (slot->callback_func != NULL)
721 slot->callback_func(slot->callback_data);
724 void finish_all_active_slots(void)
726 struct active_request_slot *slot = active_queue_head;
730 run_active_slot(slot);
731 slot = active_queue_head;
737 /* Helpers for modifying and creating URLs */
738 static inline int needs_quote(int ch)
740 if (((ch >= 'A') && (ch <= 'Z'))
741 || ((ch >= 'a') && (ch <= 'z'))
742 || ((ch >= '0') && (ch <= '9'))
750 static char *quote_ref_url(const char *base, const char *ref)
752 struct strbuf buf = STRBUF_INIT;
756 end_url_with_slash(&buf, base);
758 for (cp = ref; (ch = *cp) != 0; cp++)
760 strbuf_addf(&buf, "%%%02x", ch);
762 strbuf_addch(&buf, *cp);
764 return strbuf_detach(&buf, NULL);
767 void append_remote_object_url(struct strbuf *buf, const char *url,
769 int only_two_digit_prefix)
771 end_url_with_slash(buf, url);
773 strbuf_addf(buf, "objects/%.*s/", 2, hex);
774 if (!only_two_digit_prefix)
775 strbuf_addf(buf, "%s", hex+2);
778 char *get_remote_object_url(const char *url, const char *hex,
779 int only_two_digit_prefix)
781 struct strbuf buf = STRBUF_INIT;
782 append_remote_object_url(&buf, url, hex, only_two_digit_prefix);
783 return strbuf_detach(&buf, NULL);
786 /* http_request() targets */
787 #define HTTP_REQUEST_STRBUF 0
788 #define HTTP_REQUEST_FILE 1
790 static int http_request(const char *url, void *result, int target, int options)
792 struct active_request_slot *slot;
793 struct slot_results results;
794 struct curl_slist *headers = NULL;
795 struct strbuf buf = STRBUF_INIT;
798 slot = get_active_slot();
799 slot->results = &results;
800 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
802 if (result == NULL) {
803 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
805 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
806 curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
808 if (target == HTTP_REQUEST_FILE) {
809 long posn = ftell(result);
810 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
813 strbuf_addf(&buf, "Range: bytes=%ld-", posn);
814 headers = curl_slist_append(headers, buf.buf);
817 slot->local = result;
819 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
823 strbuf_addstr(&buf, "Pragma:");
824 if (options & HTTP_NO_CACHE)
825 strbuf_addstr(&buf, " no-cache");
827 headers = curl_slist_append(headers, buf.buf);
829 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
830 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
832 if (start_active_slot(slot)) {
833 run_active_slot(slot);
834 if (results.curl_result == CURLE_OK)
836 else if (missing_target(&results))
837 ret = HTTP_MISSING_TARGET;
838 else if (results.http_code == 401) {
839 if (user_name && user_pass) {
843 * git_getpass is needed here because its very likely stdin/stdout are
844 * pipes to our parent process. So we instead need to use /dev/tty,
845 * but that is non-portable. Using git_getpass() can at least be stubbed
846 * on other platforms with a different implementation if/when necessary.
849 user_name = xstrdup(git_getpass_with_description("Username", description));
850 init_curl_http_auth(slot->curl);
854 if (!curl_errorstr[0])
855 strlcpy(curl_errorstr,
856 curl_easy_strerror(results.curl_result),
857 sizeof(curl_errorstr));
861 error("Unable to start HTTP request for %s", url);
862 ret = HTTP_START_FAILED;
866 curl_slist_free_all(headers);
867 strbuf_release(&buf);
872 static int http_request_reauth(const char *url, void *result, int target,
875 int ret = http_request(url, result, target, options);
876 if (ret != HTTP_REAUTH)
878 return http_request(url, result, target, options);
881 int http_get_strbuf(const char *url, struct strbuf *result, int options)
883 return http_request_reauth(url, result, HTTP_REQUEST_STRBUF, options);
887 * Downloads an url and stores the result in the given file.
889 * If a previous interrupted download is detected (i.e. a previous temporary
890 * file is still around) the download is resumed.
892 static int http_get_file(const char *url, const char *filename, int options)
895 struct strbuf tmpfile = STRBUF_INIT;
898 strbuf_addf(&tmpfile, "%s.temp", filename);
899 result = fopen(tmpfile.buf, "a");
901 error("Unable to open local file %s", tmpfile.buf);
906 ret = http_request_reauth(url, result, HTTP_REQUEST_FILE, options);
909 if ((ret == HTTP_OK) && move_temp_to_file(tmpfile.buf, filename))
912 strbuf_release(&tmpfile);
916 int http_error(const char *url, int ret)
918 /* http_request has already handled HTTP_START_FAILED. */
919 if (ret != HTTP_START_FAILED)
920 error("%s while accessing %s", curl_errorstr, url);
925 int http_fetch_ref(const char *base, struct ref *ref)
928 struct strbuf buffer = STRBUF_INIT;
931 url = quote_ref_url(base, ref->name);
932 if (http_get_strbuf(url, &buffer, HTTP_NO_CACHE) == HTTP_OK) {
933 strbuf_rtrim(&buffer);
934 if (buffer.len == 40)
935 ret = get_sha1_hex(buffer.buf, ref->old_sha1);
936 else if (!prefixcmp(buffer.buf, "ref: ")) {
937 ref->symref = xstrdup(buffer.buf + 5);
942 strbuf_release(&buffer);
947 /* Helpers for fetching packs */
948 static char *fetch_pack_index(unsigned char *sha1, const char *base_url)
951 struct strbuf buf = STRBUF_INIT;
954 fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1));
956 end_url_with_slash(&buf, base_url);
957 strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1));
958 url = strbuf_detach(&buf, NULL);
960 strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1));
961 tmp = strbuf_detach(&buf, NULL);
963 if (http_get_file(url, tmp, 0) != HTTP_OK) {
964 error("Unable to get pack index %s\n", url);
973 static int fetch_and_setup_pack_index(struct packed_git **packs_head,
974 unsigned char *sha1, const char *base_url)
976 struct packed_git *new_pack;
977 char *tmp_idx = NULL;
980 if (has_pack_index(sha1)) {
981 new_pack = parse_pack_index(sha1, NULL);
983 return -1; /* parse_pack_index() already issued error message */
987 tmp_idx = fetch_pack_index(sha1, base_url);
991 new_pack = parse_pack_index(sha1, tmp_idx);
996 return -1; /* parse_pack_index() already issued error message */
999 ret = verify_pack_index(new_pack);
1001 close_pack_index(new_pack);
1002 ret = move_temp_to_file(tmp_idx, sha1_pack_index_name(sha1));
1009 new_pack->next = *packs_head;
1010 *packs_head = new_pack;
1014 int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
1018 struct strbuf buf = STRBUF_INIT;
1019 unsigned char sha1[20];
1021 end_url_with_slash(&buf, base_url);
1022 strbuf_addstr(&buf, "objects/info/packs");
1023 url = strbuf_detach(&buf, NULL);
1025 ret = http_get_strbuf(url, &buf, HTTP_NO_CACHE);
1030 while (i < buf.len) {
1034 if (i + 52 <= buf.len &&
1035 !prefixcmp(data + i, " pack-") &&
1036 !prefixcmp(data + i + 46, ".pack\n")) {
1037 get_sha1_hex(data + i + 6, sha1);
1038 fetch_and_setup_pack_index(packs_head, sha1,
1044 while (i < buf.len && data[i] != '\n')
1055 void release_http_pack_request(struct http_pack_request *preq)
1057 if (preq->packfile != NULL) {
1058 fclose(preq->packfile);
1059 preq->packfile = NULL;
1060 preq->slot->local = NULL;
1062 if (preq->range_header != NULL) {
1063 curl_slist_free_all(preq->range_header);
1064 preq->range_header = NULL;
1070 int finish_http_pack_request(struct http_pack_request *preq)
1072 struct packed_git **lst;
1073 struct packed_git *p = preq->target;
1075 struct child_process ip;
1076 const char *ip_argv[8];
1078 close_pack_index(p);
1080 fclose(preq->packfile);
1081 preq->packfile = NULL;
1082 preq->slot->local = NULL;
1086 lst = &((*lst)->next);
1087 *lst = (*lst)->next;
1089 tmp_idx = xstrdup(preq->tmpfile);
1090 strcpy(tmp_idx + strlen(tmp_idx) - strlen(".pack.temp"),
1093 ip_argv[0] = "index-pack";
1095 ip_argv[2] = tmp_idx;
1096 ip_argv[3] = preq->tmpfile;
1099 memset(&ip, 0, sizeof(ip));
1105 if (run_command(&ip)) {
1106 unlink(preq->tmpfile);
1112 unlink(sha1_pack_index_name(p->sha1));
1114 if (move_temp_to_file(preq->tmpfile, sha1_pack_name(p->sha1))
1115 || move_temp_to_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
1120 install_packed_git(p);
1125 struct http_pack_request *new_http_pack_request(
1126 struct packed_git *target, const char *base_url)
1129 char range[RANGE_HEADER_SIZE];
1130 struct strbuf buf = STRBUF_INIT;
1131 struct http_pack_request *preq;
1133 preq = xcalloc(1, sizeof(*preq));
1134 preq->target = target;
1136 end_url_with_slash(&buf, base_url);
1137 strbuf_addf(&buf, "objects/pack/pack-%s.pack",
1138 sha1_to_hex(target->sha1));
1139 preq->url = strbuf_detach(&buf, NULL);
1141 snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp",
1142 sha1_pack_name(target->sha1));
1143 preq->packfile = fopen(preq->tmpfile, "a");
1144 if (!preq->packfile) {
1145 error("Unable to open local file %s for pack",
1150 preq->slot = get_active_slot();
1151 preq->slot->local = preq->packfile;
1152 curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
1153 curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
1154 curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url);
1155 curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1159 * If there is data present from a previous transfer attempt,
1160 * resume where it left off
1162 prev_posn = ftell(preq->packfile);
1164 if (http_is_verbose)
1166 "Resuming fetch of pack %s at byte %ld\n",
1167 sha1_to_hex(target->sha1), prev_posn);
1168 sprintf(range, "Range: bytes=%ld-", prev_posn);
1169 preq->range_header = curl_slist_append(NULL, range);
1170 curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1171 preq->range_header);
1182 /* Helpers for fetching objects (loose) */
1183 static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb,
1186 unsigned char expn[4096];
1187 size_t size = eltsize * nmemb;
1189 struct http_object_request *freq =
1190 (struct http_object_request *)data;
1192 ssize_t retval = xwrite(freq->localfile,
1193 (char *) ptr + posn, size - posn);
1197 } while (posn < size);
1199 freq->stream.avail_in = size;
1200 freq->stream.next_in = (void *)ptr;
1202 freq->stream.next_out = expn;
1203 freq->stream.avail_out = sizeof(expn);
1204 freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH);
1205 git_SHA1_Update(&freq->c, expn,
1206 sizeof(expn) - freq->stream.avail_out);
1207 } while (freq->stream.avail_in && freq->zret == Z_OK);
1212 struct http_object_request *new_http_object_request(const char *base_url,
1213 unsigned char *sha1)
1215 char *hex = sha1_to_hex(sha1);
1217 char prevfile[PATH_MAX];
1219 char prev_buf[PREV_BUF_SIZE];
1220 ssize_t prev_read = 0;
1222 char range[RANGE_HEADER_SIZE];
1223 struct curl_slist *range_header = NULL;
1224 struct http_object_request *freq;
1226 freq = xcalloc(1, sizeof(*freq));
1227 hashcpy(freq->sha1, sha1);
1228 freq->localfile = -1;
1230 filename = sha1_file_name(sha1);
1231 snprintf(freq->tmpfile, sizeof(freq->tmpfile),
1232 "%s.temp", filename);
1234 snprintf(prevfile, sizeof(prevfile), "%s.prev", filename);
1235 unlink_or_warn(prevfile);
1236 rename(freq->tmpfile, prevfile);
1237 unlink_or_warn(freq->tmpfile);
1239 if (freq->localfile != -1)
1240 error("fd leakage in start: %d", freq->localfile);
1241 freq->localfile = open(freq->tmpfile,
1242 O_WRONLY | O_CREAT | O_EXCL, 0666);
1244 * This could have failed due to the "lazy directory creation";
1245 * try to mkdir the last path component.
1247 if (freq->localfile < 0 && errno == ENOENT) {
1248 char *dir = strrchr(freq->tmpfile, '/');
1251 mkdir(freq->tmpfile, 0777);
1254 freq->localfile = open(freq->tmpfile,
1255 O_WRONLY | O_CREAT | O_EXCL, 0666);
1258 if (freq->localfile < 0) {
1259 error("Couldn't create temporary file %s: %s",
1260 freq->tmpfile, strerror(errno));
1264 git_inflate_init(&freq->stream);
1266 git_SHA1_Init(&freq->c);
1268 freq->url = get_remote_object_url(base_url, hex, 0);
1271 * If a previous temp file is present, process what was already
1274 prevlocal = open(prevfile, O_RDONLY);
1275 if (prevlocal != -1) {
1277 prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
1279 if (fwrite_sha1_file(prev_buf,
1282 freq) == prev_read) {
1283 prev_posn += prev_read;
1288 } while (prev_read > 0);
1291 unlink_or_warn(prevfile);
1294 * Reset inflate/SHA1 if there was an error reading the previous temp
1295 * file; also rewind to the beginning of the local file.
1297 if (prev_read == -1) {
1298 memset(&freq->stream, 0, sizeof(freq->stream));
1299 git_inflate_init(&freq->stream);
1300 git_SHA1_Init(&freq->c);
1303 lseek(freq->localfile, 0, SEEK_SET);
1304 if (ftruncate(freq->localfile, 0) < 0) {
1305 error("Couldn't truncate temporary file %s: %s",
1306 freq->tmpfile, strerror(errno));
1312 freq->slot = get_active_slot();
1314 curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
1315 curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
1316 curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
1317 curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url);
1318 curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
1321 * If we have successfully processed data from a previous fetch
1322 * attempt, only fetch the data we don't already have.
1325 if (http_is_verbose)
1327 "Resuming fetch of object %s at byte %ld\n",
1329 sprintf(range, "Range: bytes=%ld-", prev_posn);
1330 range_header = curl_slist_append(range_header, range);
1331 curl_easy_setopt(freq->slot->curl,
1332 CURLOPT_HTTPHEADER, range_header);
1343 void process_http_object_request(struct http_object_request *freq)
1345 if (freq->slot == NULL)
1347 freq->curl_result = freq->slot->curl_result;
1348 freq->http_code = freq->slot->http_code;
1352 int finish_http_object_request(struct http_object_request *freq)
1356 close(freq->localfile);
1357 freq->localfile = -1;
1359 process_http_object_request(freq);
1361 if (freq->http_code == 416) {
1362 warning("requested range invalid; we may already have all the data.");
1363 } else if (freq->curl_result != CURLE_OK) {
1364 if (stat(freq->tmpfile, &st) == 0)
1365 if (st.st_size == 0)
1366 unlink_or_warn(freq->tmpfile);
1370 git_inflate_end(&freq->stream);
1371 git_SHA1_Final(freq->real_sha1, &freq->c);
1372 if (freq->zret != Z_STREAM_END) {
1373 unlink_or_warn(freq->tmpfile);
1376 if (hashcmp(freq->sha1, freq->real_sha1)) {
1377 unlink_or_warn(freq->tmpfile);
1381 move_temp_to_file(freq->tmpfile, sha1_file_name(freq->sha1));
1383 return freq->rename;
1386 void abort_http_object_request(struct http_object_request *freq)
1388 unlink_or_warn(freq->tmpfile);
1390 release_http_object_request(freq);
1393 void release_http_object_request(struct http_object_request *freq)
1395 if (freq->localfile != -1) {
1396 close(freq->localfile);
1397 freq->localfile = -1;
1399 if (freq->url != NULL) {
1403 if (freq->slot != NULL) {
1404 freq->slot->callback_func = NULL;
1405 freq->slot->callback_data = NULL;
1406 release_active_slot(freq->slot);