1 #include "git-compat-util.h"
5 #include "run-command.h"
8 #include "credential.h"
12 #include "transport.h"
14 #if LIBCURL_VERSION_NUM >= 0x070a08
15 long int git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
17 long int git_curl_ipresolve;
21 size_t http_post_buffer = 16 * LARGE_PACKET_MAX;
23 #if LIBCURL_VERSION_NUM >= 0x070a06
24 #define LIBCURL_CAN_HANDLE_AUTH_ANY
27 static int min_curl_sessions = 1;
28 static int curl_session_count;
30 static int max_requests = -1;
33 #ifndef NO_CURL_EASY_DUPHANDLE
34 static CURL *curl_default;
37 #define PREV_BUF_SIZE 4096
39 char curl_errorstr[CURL_ERROR_SIZE];
41 static int curl_ssl_verify = -1;
42 static int curl_ssl_try;
43 static const char *ssl_cert;
44 static const char *ssl_cipherlist;
45 static const char *ssl_version;
50 { "sslv2", CURL_SSLVERSION_SSLv2 },
51 { "sslv3", CURL_SSLVERSION_SSLv3 },
52 { "tlsv1", CURL_SSLVERSION_TLSv1 },
53 #if LIBCURL_VERSION_NUM >= 0x072200
54 { "tlsv1.0", CURL_SSLVERSION_TLSv1_0 },
55 { "tlsv1.1", CURL_SSLVERSION_TLSv1_1 },
56 { "tlsv1.2", CURL_SSLVERSION_TLSv1_2 },
59 #if LIBCURL_VERSION_NUM >= 0x070903
60 static const char *ssl_key;
62 #if LIBCURL_VERSION_NUM >= 0x070908
63 static const char *ssl_capath;
65 #if LIBCURL_VERSION_NUM >= 0x072c00
66 static const char *ssl_pinnedkey;
68 static const char *ssl_cainfo;
69 static long curl_low_speed_limit = -1;
70 static long curl_low_speed_time = -1;
71 static int curl_ftp_no_epsv;
72 static const char *curl_http_proxy;
73 static const char *curl_no_proxy;
74 static const char *http_proxy_authmethod;
78 } proxy_authmethods[] = {
79 { "basic", CURLAUTH_BASIC },
80 { "digest", CURLAUTH_DIGEST },
81 { "negotiate", CURLAUTH_GSSNEGOTIATE },
82 { "ntlm", CURLAUTH_NTLM },
83 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
84 { "anyauth", CURLAUTH_ANY },
87 * CURLAUTH_DIGEST_IE has no corresponding command-line option in
88 * curl(1) and is not included in CURLAUTH_ANY, so we leave it out
92 static struct credential proxy_auth = CREDENTIAL_INIT;
93 static const char *curl_proxyuserpwd;
94 static const char *curl_cookie_file;
95 static int curl_save_cookies;
96 struct credential http_auth = CREDENTIAL_INIT;
97 static int http_proactive_auth;
98 static const char *user_agent;
99 static int curl_empty_auth;
101 #if LIBCURL_VERSION_NUM >= 0x071700
102 /* Use CURLOPT_KEYPASSWD as is */
103 #elif LIBCURL_VERSION_NUM >= 0x070903
104 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
106 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
109 static struct credential cert_auth = CREDENTIAL_INIT;
110 static int ssl_cert_password_required;
111 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
112 static unsigned long http_auth_methods = CURLAUTH_ANY;
115 static struct curl_slist *pragma_header;
116 static struct curl_slist *no_pragma_header;
118 static struct active_request_slot *active_queue_head;
120 static char *cached_accept_language;
122 size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
124 size_t size = eltsize * nmemb;
125 struct buffer *buffer = buffer_;
127 if (size > buffer->buf.len - buffer->posn)
128 size = buffer->buf.len - buffer->posn;
129 memcpy(ptr, buffer->buf.buf + buffer->posn, size);
130 buffer->posn += size;
135 #ifndef NO_CURL_IOCTL
136 curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp)
138 struct buffer *buffer = clientp;
144 case CURLIOCMD_RESTARTREAD:
149 return CURLIOE_UNKNOWNCMD;
154 size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
156 size_t size = eltsize * nmemb;
157 struct strbuf *buffer = buffer_;
159 strbuf_add(buffer, ptr, size);
163 size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf)
165 return eltsize * nmemb;
168 static void closedown_active_slot(struct active_request_slot *slot)
174 static void finish_active_slot(struct active_request_slot *slot)
176 closedown_active_slot(slot);
177 curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
179 if (slot->finished != NULL)
180 (*slot->finished) = 1;
182 /* Store slot results so they can be read after the slot is reused */
183 if (slot->results != NULL) {
184 slot->results->curl_result = slot->curl_result;
185 slot->results->http_code = slot->http_code;
186 #if LIBCURL_VERSION_NUM >= 0x070a08
187 curl_easy_getinfo(slot->curl, CURLINFO_HTTPAUTH_AVAIL,
188 &slot->results->auth_avail);
190 slot->results->auth_avail = 0;
193 curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CONNECTCODE,
194 &slot->results->http_connectcode);
197 /* Run callback if appropriate */
198 if (slot->callback_func != NULL)
199 slot->callback_func(slot->callback_data);
202 #ifdef USE_CURL_MULTI
203 static void process_curl_messages(void)
206 struct active_request_slot *slot;
207 CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages);
209 while (curl_message != NULL) {
210 if (curl_message->msg == CURLMSG_DONE) {
211 int curl_result = curl_message->data.result;
212 slot = active_queue_head;
213 while (slot != NULL &&
214 slot->curl != curl_message->easy_handle)
217 curl_multi_remove_handle(curlm, slot->curl);
218 slot->curl_result = curl_result;
219 finish_active_slot(slot);
221 fprintf(stderr, "Received DONE message for unknown request!\n");
224 fprintf(stderr, "Unknown CURL message received: %d\n",
225 (int)curl_message->msg);
227 curl_message = curl_multi_info_read(curlm, &num_messages);
232 static int http_options(const char *var, const char *value, void *cb)
234 if (!strcmp("http.sslverify", var)) {
235 curl_ssl_verify = git_config_bool(var, value);
238 if (!strcmp("http.sslcipherlist", var))
239 return git_config_string(&ssl_cipherlist, var, value);
240 if (!strcmp("http.sslversion", var))
241 return git_config_string(&ssl_version, var, value);
242 if (!strcmp("http.sslcert", var))
243 return git_config_string(&ssl_cert, var, value);
244 #if LIBCURL_VERSION_NUM >= 0x070903
245 if (!strcmp("http.sslkey", var))
246 return git_config_string(&ssl_key, var, value);
248 #if LIBCURL_VERSION_NUM >= 0x070908
249 if (!strcmp("http.sslcapath", var))
250 return git_config_pathname(&ssl_capath, var, value);
252 if (!strcmp("http.sslcainfo", var))
253 return git_config_pathname(&ssl_cainfo, var, value);
254 if (!strcmp("http.sslcertpasswordprotected", var)) {
255 ssl_cert_password_required = git_config_bool(var, value);
258 if (!strcmp("http.ssltry", var)) {
259 curl_ssl_try = git_config_bool(var, value);
262 if (!strcmp("http.minsessions", var)) {
263 min_curl_sessions = git_config_int(var, value);
264 #ifndef USE_CURL_MULTI
265 if (min_curl_sessions > 1)
266 min_curl_sessions = 1;
270 #ifdef USE_CURL_MULTI
271 if (!strcmp("http.maxrequests", var)) {
272 max_requests = git_config_int(var, value);
276 if (!strcmp("http.lowspeedlimit", var)) {
277 curl_low_speed_limit = (long)git_config_int(var, value);
280 if (!strcmp("http.lowspeedtime", var)) {
281 curl_low_speed_time = (long)git_config_int(var, value);
285 if (!strcmp("http.noepsv", var)) {
286 curl_ftp_no_epsv = git_config_bool(var, value);
289 if (!strcmp("http.proxy", var))
290 return git_config_string(&curl_http_proxy, var, value);
292 if (!strcmp("http.proxyauthmethod", var))
293 return git_config_string(&http_proxy_authmethod, var, value);
295 if (!strcmp("http.cookiefile", var))
296 return git_config_pathname(&curl_cookie_file, var, value);
297 if (!strcmp("http.savecookies", var)) {
298 curl_save_cookies = git_config_bool(var, value);
302 if (!strcmp("http.postbuffer", var)) {
303 http_post_buffer = git_config_int(var, value);
304 if (http_post_buffer < LARGE_PACKET_MAX)
305 http_post_buffer = LARGE_PACKET_MAX;
309 if (!strcmp("http.useragent", var))
310 return git_config_string(&user_agent, var, value);
312 if (!strcmp("http.emptyauth", var)) {
313 curl_empty_auth = git_config_bool(var, value);
317 if (!strcmp("http.pinnedpubkey", var)) {
318 #if LIBCURL_VERSION_NUM >= 0x072c00
319 return git_config_pathname(&ssl_pinnedkey, var, value);
321 warning(_("Public key pinning not supported with cURL < 7.44.0"));
326 /* Fall back on the default ones */
327 return git_default_config(var, value, cb);
330 static void init_curl_http_auth(CURL *result)
332 if (!http_auth.username) {
334 curl_easy_setopt(result, CURLOPT_USERPWD, ":");
338 credential_fill(&http_auth);
340 #if LIBCURL_VERSION_NUM >= 0x071301
341 curl_easy_setopt(result, CURLOPT_USERNAME, http_auth.username);
342 curl_easy_setopt(result, CURLOPT_PASSWORD, http_auth.password);
345 static struct strbuf up = STRBUF_INIT;
347 * Note that we assume we only ever have a single set of
348 * credentials in a given program run, so we do not have
349 * to worry about updating this buffer, only setting its
353 strbuf_addf(&up, "%s:%s",
354 http_auth.username, http_auth.password);
355 curl_easy_setopt(result, CURLOPT_USERPWD, up.buf);
360 /* *var must be free-able */
361 static void var_override(const char **var, char *value)
365 *var = xstrdup(value);
369 static void set_proxyauth_name_password(CURL *result)
371 #if LIBCURL_VERSION_NUM >= 0x071301
372 curl_easy_setopt(result, CURLOPT_PROXYUSERNAME,
373 proxy_auth.username);
374 curl_easy_setopt(result, CURLOPT_PROXYPASSWORD,
375 proxy_auth.password);
377 struct strbuf s = STRBUF_INIT;
379 strbuf_addstr_urlencode(&s, proxy_auth.username, 1);
380 strbuf_addch(&s, ':');
381 strbuf_addstr_urlencode(&s, proxy_auth.password, 1);
382 curl_proxyuserpwd = strbuf_detach(&s, NULL);
383 curl_easy_setopt(result, CURLOPT_PROXYUSERPWD, curl_proxyuserpwd);
387 static void init_curl_proxy_auth(CURL *result)
389 if (proxy_auth.username) {
390 if (!proxy_auth.password)
391 credential_fill(&proxy_auth);
392 set_proxyauth_name_password(result);
395 var_override(&http_proxy_authmethod, getenv("GIT_HTTP_PROXY_AUTHMETHOD"));
397 #if LIBCURL_VERSION_NUM >= 0x070a07 /* CURLOPT_PROXYAUTH and CURLAUTH_ANY */
398 if (http_proxy_authmethod) {
400 for (i = 0; i < ARRAY_SIZE(proxy_authmethods); i++) {
401 if (!strcmp(http_proxy_authmethod, proxy_authmethods[i].name)) {
402 curl_easy_setopt(result, CURLOPT_PROXYAUTH,
403 proxy_authmethods[i].curlauth_param);
407 if (i == ARRAY_SIZE(proxy_authmethods)) {
408 warning("unsupported proxy authentication method %s: using anyauth",
409 http_proxy_authmethod);
410 curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
414 curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
418 static int has_cert_password(void)
420 if (ssl_cert == NULL || ssl_cert_password_required != 1)
422 if (!cert_auth.password) {
423 cert_auth.protocol = xstrdup("cert");
424 cert_auth.username = xstrdup("");
425 cert_auth.path = xstrdup(ssl_cert);
426 credential_fill(&cert_auth);
431 #if LIBCURL_VERSION_NUM >= 0x071900
432 static void set_curl_keepalive(CURL *c)
434 curl_easy_setopt(c, CURLOPT_TCP_KEEPALIVE, 1);
437 #elif LIBCURL_VERSION_NUM >= 0x071000
438 static int sockopt_callback(void *client, curl_socket_t fd, curlsocktype type)
442 socklen_t len = (socklen_t)sizeof(ka);
444 if (type != CURLSOCKTYPE_IPCXN)
447 rc = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&ka, len);
449 warning("unable to set SO_KEEPALIVE on socket %s",
452 return 0; /* CURL_SOCKOPT_OK only exists since curl 7.21.5 */
455 static void set_curl_keepalive(CURL *c)
457 curl_easy_setopt(c, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
461 static void set_curl_keepalive(CURL *c)
463 /* not supported on older curl versions */
467 static CURL *get_curl_handle(void)
469 CURL *result = curl_easy_init();
470 long allowed_protocols = 0;
473 die("curl_easy_init failed");
475 if (!curl_ssl_verify) {
476 curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0);
477 curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0);
479 /* Verify authenticity of the peer's certificate */
480 curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1);
481 /* The name in the cert must match whom we tried to connect */
482 curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2);
485 #if LIBCURL_VERSION_NUM >= 0x070907
486 curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
488 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
489 curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
492 if (http_proactive_auth)
493 init_curl_http_auth(result);
495 if (getenv("GIT_SSL_VERSION"))
496 ssl_version = getenv("GIT_SSL_VERSION");
497 if (ssl_version && *ssl_version) {
499 for (i = 0; i < ARRAY_SIZE(sslversions); i++) {
500 if (!strcmp(ssl_version, sslversions[i].name)) {
501 curl_easy_setopt(result, CURLOPT_SSLVERSION,
502 sslversions[i].ssl_version);
506 if (i == ARRAY_SIZE(sslversions))
507 warning("unsupported ssl version %s: using default",
511 if (getenv("GIT_SSL_CIPHER_LIST"))
512 ssl_cipherlist = getenv("GIT_SSL_CIPHER_LIST");
513 if (ssl_cipherlist != NULL && *ssl_cipherlist)
514 curl_easy_setopt(result, CURLOPT_SSL_CIPHER_LIST,
517 if (ssl_cert != NULL)
518 curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
519 if (has_cert_password())
520 curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password);
521 #if LIBCURL_VERSION_NUM >= 0x070903
523 curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key);
525 #if LIBCURL_VERSION_NUM >= 0x070908
526 if (ssl_capath != NULL)
527 curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath);
529 #if LIBCURL_VERSION_NUM >= 0x072c00
530 if (ssl_pinnedkey != NULL)
531 curl_easy_setopt(result, CURLOPT_PINNEDPUBLICKEY, ssl_pinnedkey);
533 if (ssl_cainfo != NULL)
534 curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo);
536 if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) {
537 curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT,
538 curl_low_speed_limit);
539 curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME,
540 curl_low_speed_time);
543 curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1);
544 curl_easy_setopt(result, CURLOPT_MAXREDIRS, 20);
545 #if LIBCURL_VERSION_NUM >= 0x071301
546 curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
547 #elif LIBCURL_VERSION_NUM >= 0x071101
548 curl_easy_setopt(result, CURLOPT_POST301, 1);
550 #if LIBCURL_VERSION_NUM >= 0x071304
551 if (is_transport_allowed("http"))
552 allowed_protocols |= CURLPROTO_HTTP;
553 if (is_transport_allowed("https"))
554 allowed_protocols |= CURLPROTO_HTTPS;
555 if (is_transport_allowed("ftp"))
556 allowed_protocols |= CURLPROTO_FTP;
557 if (is_transport_allowed("ftps"))
558 allowed_protocols |= CURLPROTO_FTPS;
559 curl_easy_setopt(result, CURLOPT_REDIR_PROTOCOLS, allowed_protocols);
561 if (transport_restrict_protocols())
562 warning("protocol restrictions not applied to curl redirects because\n"
563 "your curl version is too old (>= 7.19.4)");
566 if (getenv("GIT_CURL_VERBOSE"))
567 curl_easy_setopt(result, CURLOPT_VERBOSE, 1);
569 curl_easy_setopt(result, CURLOPT_USERAGENT,
570 user_agent ? user_agent : git_user_agent());
572 if (curl_ftp_no_epsv)
573 curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0);
575 #ifdef CURLOPT_USE_SSL
577 curl_easy_setopt(result, CURLOPT_USE_SSL, CURLUSESSL_TRY);
581 * CURL also examines these variables as a fallback; but we need to query
582 * them here in order to decide whether to prompt for missing password (cf.
583 * init_curl_proxy_auth()).
585 * Unlike many other common environment variables, these are historically
586 * lowercase only. It appears that CURL did not know this and implemented
587 * only uppercase variants, which was later corrected to take both - with
588 * the exception of http_proxy, which is lowercase only also in CURL. As
589 * the lowercase versions are the historical quasi-standard, they take
590 * precedence here, as in CURL.
592 if (!curl_http_proxy) {
593 if (!strcmp(http_auth.protocol, "https")) {
594 var_override(&curl_http_proxy, getenv("HTTPS_PROXY"));
595 var_override(&curl_http_proxy, getenv("https_proxy"));
597 var_override(&curl_http_proxy, getenv("http_proxy"));
599 if (!curl_http_proxy) {
600 var_override(&curl_http_proxy, getenv("ALL_PROXY"));
601 var_override(&curl_http_proxy, getenv("all_proxy"));
605 if (curl_http_proxy) {
606 curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy);
607 #if LIBCURL_VERSION_NUM >= 0x071800
608 if (starts_with(curl_http_proxy, "socks5h"))
609 curl_easy_setopt(result,
610 CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5_HOSTNAME);
611 else if (starts_with(curl_http_proxy, "socks5"))
612 curl_easy_setopt(result,
613 CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
614 else if (starts_with(curl_http_proxy, "socks4a"))
615 curl_easy_setopt(result,
616 CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4A);
617 else if (starts_with(curl_http_proxy, "socks"))
618 curl_easy_setopt(result,
619 CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4);
621 if (strstr(curl_http_proxy, "://"))
622 credential_from_url(&proxy_auth, curl_http_proxy);
624 struct strbuf url = STRBUF_INIT;
625 strbuf_addf(&url, "http://%s", curl_http_proxy);
626 credential_from_url(&proxy_auth, url.buf);
627 strbuf_release(&url);
630 curl_easy_setopt(result, CURLOPT_PROXY, proxy_auth.host);
631 #if LIBCURL_VERSION_NUM >= 0x071304
632 var_override(&curl_no_proxy, getenv("NO_PROXY"));
633 var_override(&curl_no_proxy, getenv("no_proxy"));
634 curl_easy_setopt(result, CURLOPT_NOPROXY, curl_no_proxy);
637 init_curl_proxy_auth(result);
639 set_curl_keepalive(result);
644 static void set_from_env(const char **var, const char *envname)
646 const char *val = getenv(envname);
651 void http_init(struct remote *remote, const char *url, int proactive_auth)
653 char *low_speed_limit;
654 char *low_speed_time;
655 char *normalized_url;
656 struct urlmatch_config config = { STRING_LIST_INIT_DUP };
658 config.section = "http";
660 config.collect_fn = http_options;
661 config.cascade_fn = git_default_config;
665 normalized_url = url_normalize(url, &config.url);
667 git_config(urlmatch_config_entry, &config);
668 free(normalized_url);
670 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
671 die("curl_global_init failed");
673 http_proactive_auth = proactive_auth;
675 if (remote && remote->http_proxy)
676 curl_http_proxy = xstrdup(remote->http_proxy);
679 var_override(&http_proxy_authmethod, remote->http_proxy_authmethod);
681 pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache");
682 no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
684 #ifdef USE_CURL_MULTI
686 char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS");
687 if (http_max_requests != NULL)
688 max_requests = atoi(http_max_requests);
691 curlm = curl_multi_init();
693 die("curl_multi_init failed");
696 if (getenv("GIT_SSL_NO_VERIFY"))
699 set_from_env(&ssl_cert, "GIT_SSL_CERT");
700 #if LIBCURL_VERSION_NUM >= 0x070903
701 set_from_env(&ssl_key, "GIT_SSL_KEY");
703 #if LIBCURL_VERSION_NUM >= 0x070908
704 set_from_env(&ssl_capath, "GIT_SSL_CAPATH");
706 set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO");
708 set_from_env(&user_agent, "GIT_HTTP_USER_AGENT");
710 low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT");
711 if (low_speed_limit != NULL)
712 curl_low_speed_limit = strtol(low_speed_limit, NULL, 10);
713 low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME");
714 if (low_speed_time != NULL)
715 curl_low_speed_time = strtol(low_speed_time, NULL, 10);
717 if (curl_ssl_verify == -1)
720 curl_session_count = 0;
721 #ifdef USE_CURL_MULTI
722 if (max_requests < 1)
723 max_requests = DEFAULT_MAX_REQUESTS;
726 if (getenv("GIT_CURL_FTP_NO_EPSV"))
727 curl_ftp_no_epsv = 1;
730 credential_from_url(&http_auth, url);
731 if (!ssl_cert_password_required &&
732 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
733 starts_with(url, "https://"))
734 ssl_cert_password_required = 1;
737 #ifndef NO_CURL_EASY_DUPHANDLE
738 curl_default = get_curl_handle();
742 void http_cleanup(void)
744 struct active_request_slot *slot = active_queue_head;
746 while (slot != NULL) {
747 struct active_request_slot *next = slot->next;
748 if (slot->curl != NULL) {
749 #ifdef USE_CURL_MULTI
750 curl_multi_remove_handle(curlm, slot->curl);
752 curl_easy_cleanup(slot->curl);
757 active_queue_head = NULL;
759 #ifndef NO_CURL_EASY_DUPHANDLE
760 curl_easy_cleanup(curl_default);
763 #ifdef USE_CURL_MULTI
764 curl_multi_cleanup(curlm);
766 curl_global_cleanup();
768 curl_slist_free_all(pragma_header);
769 pragma_header = NULL;
771 curl_slist_free_all(no_pragma_header);
772 no_pragma_header = NULL;
774 if (curl_http_proxy) {
775 free((void *)curl_http_proxy);
776 curl_http_proxy = NULL;
779 if (proxy_auth.password) {
780 memset(proxy_auth.password, 0, strlen(proxy_auth.password));
781 free(proxy_auth.password);
782 proxy_auth.password = NULL;
785 free((void *)curl_proxyuserpwd);
786 curl_proxyuserpwd = NULL;
788 free((void *)http_proxy_authmethod);
789 http_proxy_authmethod = NULL;
791 if (cert_auth.password != NULL) {
792 memset(cert_auth.password, 0, strlen(cert_auth.password));
793 free(cert_auth.password);
794 cert_auth.password = NULL;
796 ssl_cert_password_required = 0;
798 free(cached_accept_language);
799 cached_accept_language = NULL;
802 struct active_request_slot *get_active_slot(void)
804 struct active_request_slot *slot = active_queue_head;
805 struct active_request_slot *newslot;
807 #ifdef USE_CURL_MULTI
810 /* Wait for a slot to open up if the queue is full */
811 while (active_requests >= max_requests) {
812 curl_multi_perform(curlm, &num_transfers);
813 if (num_transfers < active_requests)
814 process_curl_messages();
818 while (slot != NULL && slot->in_use)
822 newslot = xmalloc(sizeof(*newslot));
823 newslot->curl = NULL;
825 newslot->next = NULL;
827 slot = active_queue_head;
829 active_queue_head = newslot;
831 while (slot->next != NULL)
833 slot->next = newslot;
838 if (slot->curl == NULL) {
839 #ifdef NO_CURL_EASY_DUPHANDLE
840 slot->curl = get_curl_handle();
842 slot->curl = curl_easy_duphandle(curl_default);
844 curl_session_count++;
849 slot->results = NULL;
850 slot->finished = NULL;
851 slot->callback_data = NULL;
852 slot->callback_func = NULL;
853 curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file);
854 if (curl_save_cookies)
855 curl_easy_setopt(slot->curl, CURLOPT_COOKIEJAR, curl_cookie_file);
856 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header);
857 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr);
858 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL);
859 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL);
860 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL);
861 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL);
862 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0);
863 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
864 curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 1);
865 curl_easy_setopt(slot->curl, CURLOPT_RANGE, NULL);
867 #if LIBCURL_VERSION_NUM >= 0x070a08
868 curl_easy_setopt(slot->curl, CURLOPT_IPRESOLVE, git_curl_ipresolve);
870 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
871 curl_easy_setopt(slot->curl, CURLOPT_HTTPAUTH, http_auth_methods);
873 if (http_auth.password || curl_empty_auth)
874 init_curl_http_auth(slot->curl);
879 int start_active_slot(struct active_request_slot *slot)
881 #ifdef USE_CURL_MULTI
882 CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl);
885 if (curlm_result != CURLM_OK &&
886 curlm_result != CURLM_CALL_MULTI_PERFORM) {
893 * We know there must be something to do, since we just added
896 curl_multi_perform(curlm, &num_transfers);
901 #ifdef USE_CURL_MULTI
905 struct fill_chain *next;
908 static struct fill_chain *fill_cfg;
910 void add_fill_function(void *data, int (*fill)(void *))
912 struct fill_chain *new = xmalloc(sizeof(*new));
913 struct fill_chain **linkp = &fill_cfg;
918 linkp = &(*linkp)->next;
922 void fill_active_slots(void)
924 struct active_request_slot *slot = active_queue_head;
926 while (active_requests < max_requests) {
927 struct fill_chain *fill;
928 for (fill = fill_cfg; fill; fill = fill->next)
929 if (fill->fill(fill->data))
936 while (slot != NULL) {
937 if (!slot->in_use && slot->curl != NULL
938 && curl_session_count > min_curl_sessions) {
939 curl_easy_cleanup(slot->curl);
941 curl_session_count--;
947 void step_active_slots(void)
950 CURLMcode curlm_result;
953 curlm_result = curl_multi_perform(curlm, &num_transfers);
954 } while (curlm_result == CURLM_CALL_MULTI_PERFORM);
955 if (num_transfers < active_requests) {
956 process_curl_messages();
962 void run_active_slot(struct active_request_slot *slot)
964 #ifdef USE_CURL_MULTI
969 struct timeval select_timeout;
972 slot->finished = &finished;
977 #if LIBCURL_VERSION_NUM >= 0x070f04
979 curl_multi_timeout(curlm, &curl_timeout);
980 if (curl_timeout == 0) {
982 } else if (curl_timeout == -1) {
983 select_timeout.tv_sec = 0;
984 select_timeout.tv_usec = 50000;
986 select_timeout.tv_sec = curl_timeout / 1000;
987 select_timeout.tv_usec = (curl_timeout % 1000) * 1000;
990 select_timeout.tv_sec = 0;
991 select_timeout.tv_usec = 50000;
998 curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd);
1001 * It can happen that curl_multi_timeout returns a pathologically
1002 * long timeout when curl_multi_fdset returns no file descriptors
1003 * to read. See commit message for more details.
1006 (select_timeout.tv_sec > 0 ||
1007 select_timeout.tv_usec > 50000)) {
1008 select_timeout.tv_sec = 0;
1009 select_timeout.tv_usec = 50000;
1012 select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout);
1016 while (slot->in_use) {
1017 slot->curl_result = curl_easy_perform(slot->curl);
1018 finish_active_slot(slot);
1023 static void release_active_slot(struct active_request_slot *slot)
1025 closedown_active_slot(slot);
1026 if (slot->curl && curl_session_count > min_curl_sessions) {
1027 #ifdef USE_CURL_MULTI
1028 curl_multi_remove_handle(curlm, slot->curl);
1030 curl_easy_cleanup(slot->curl);
1032 curl_session_count--;
1034 #ifdef USE_CURL_MULTI
1035 fill_active_slots();
1039 void finish_all_active_slots(void)
1041 struct active_request_slot *slot = active_queue_head;
1043 while (slot != NULL)
1045 run_active_slot(slot);
1046 slot = active_queue_head;
1052 /* Helpers for modifying and creating URLs */
1053 static inline int needs_quote(int ch)
1055 if (((ch >= 'A') && (ch <= 'Z'))
1056 || ((ch >= 'a') && (ch <= 'z'))
1057 || ((ch >= '0') && (ch <= '9'))
1065 static char *quote_ref_url(const char *base, const char *ref)
1067 struct strbuf buf = STRBUF_INIT;
1071 end_url_with_slash(&buf, base);
1073 for (cp = ref; (ch = *cp) != 0; cp++)
1074 if (needs_quote(ch))
1075 strbuf_addf(&buf, "%%%02x", ch);
1077 strbuf_addch(&buf, *cp);
1079 return strbuf_detach(&buf, NULL);
1082 void append_remote_object_url(struct strbuf *buf, const char *url,
1084 int only_two_digit_prefix)
1086 end_url_with_slash(buf, url);
1088 strbuf_addf(buf, "objects/%.*s/", 2, hex);
1089 if (!only_two_digit_prefix)
1090 strbuf_addf(buf, "%s", hex+2);
1093 char *get_remote_object_url(const char *url, const char *hex,
1094 int only_two_digit_prefix)
1096 struct strbuf buf = STRBUF_INIT;
1097 append_remote_object_url(&buf, url, hex, only_two_digit_prefix);
1098 return strbuf_detach(&buf, NULL);
1101 static int handle_curl_result(struct slot_results *results)
1104 * If we see a failing http code with CURLE_OK, we have turned off
1105 * FAILONERROR (to keep the server's custom error response), and should
1106 * translate the code into failure here.
1108 if (results->curl_result == CURLE_OK &&
1109 results->http_code >= 400) {
1110 results->curl_result = CURLE_HTTP_RETURNED_ERROR;
1112 * Normally curl will already have put the "reason phrase"
1113 * from the server into curl_errorstr; unfortunately without
1114 * FAILONERROR it is lost, so we can give only the numeric
1117 snprintf(curl_errorstr, sizeof(curl_errorstr),
1118 "The requested URL returned error: %ld",
1119 results->http_code);
1122 if (results->curl_result == CURLE_OK) {
1123 credential_approve(&http_auth);
1124 if (proxy_auth.password)
1125 credential_approve(&proxy_auth);
1127 } else if (missing_target(results))
1128 return HTTP_MISSING_TARGET;
1129 else if (results->http_code == 401) {
1130 if (http_auth.username && http_auth.password) {
1131 credential_reject(&http_auth);
1134 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
1135 http_auth_methods &= ~CURLAUTH_GSSNEGOTIATE;
1140 if (results->http_connectcode == 407)
1141 credential_reject(&proxy_auth);
1142 #if LIBCURL_VERSION_NUM >= 0x070c00
1143 if (!curl_errorstr[0])
1144 strlcpy(curl_errorstr,
1145 curl_easy_strerror(results->curl_result),
1146 sizeof(curl_errorstr));
1152 int run_one_slot(struct active_request_slot *slot,
1153 struct slot_results *results)
1155 slot->results = results;
1156 if (!start_active_slot(slot)) {
1157 snprintf(curl_errorstr, sizeof(curl_errorstr),
1158 "failed to start HTTP request");
1159 return HTTP_START_FAILED;
1162 run_active_slot(slot);
1163 return handle_curl_result(results);
1166 static CURLcode curlinfo_strbuf(CURL *curl, CURLINFO info, struct strbuf *buf)
1172 ret = curl_easy_getinfo(curl, info, &ptr);
1174 strbuf_addstr(buf, ptr);
1179 * Check for and extract a content-type parameter. "raw"
1180 * should be positioned at the start of the potential
1181 * parameter, with any whitespace already removed.
1183 * "name" is the name of the parameter. The value is appended
1186 static int extract_param(const char *raw, const char *name,
1189 size_t len = strlen(name);
1191 if (strncasecmp(raw, name, len))
1199 while (*raw && !isspace(*raw) && *raw != ';')
1200 strbuf_addch(out, *raw++);
1205 * Extract a normalized version of the content type, with any
1206 * spaces suppressed, all letters lowercased, and no trailing ";"
1209 * Note that we will silently remove even invalid whitespace. For
1210 * example, "text / plain" is specifically forbidden by RFC 2616,
1211 * but "text/plain" is the only reasonable output, and this keeps
1214 * If the "charset" argument is not NULL, store the value of any
1215 * charset parameter there.
1218 * "TEXT/PLAIN; charset=utf-8" -> "text/plain", "utf-8"
1219 * "text / plain" -> "text/plain"
1221 static void extract_content_type(struct strbuf *raw, struct strbuf *type,
1222 struct strbuf *charset)
1227 strbuf_grow(type, raw->len);
1228 for (p = raw->buf; *p; p++) {
1235 strbuf_addch(type, tolower(*p));
1241 strbuf_reset(charset);
1243 while (isspace(*p) || *p == ';')
1245 if (!extract_param(p, "charset", charset))
1247 while (*p && !isspace(*p))
1251 if (!charset->len && starts_with(type->buf, "text/"))
1252 strbuf_addstr(charset, "ISO-8859-1");
1255 static void write_accept_language(struct strbuf *buf)
1258 * MAX_DECIMAL_PLACES must not be larger than 3. If it is larger than
1259 * that, q-value will be smaller than 0.001, the minimum q-value the
1260 * HTTP specification allows. See
1261 * http://tools.ietf.org/html/rfc7231#section-5.3.1 for q-value.
1263 const int MAX_DECIMAL_PLACES = 3;
1264 const int MAX_LANGUAGE_TAGS = 1000;
1265 const int MAX_ACCEPT_LANGUAGE_HEADER_SIZE = 4000;
1266 char **language_tags = NULL;
1268 const char *s = get_preferred_languages();
1270 struct strbuf tag = STRBUF_INIT;
1272 /* Don't add Accept-Language header if no language is preferred. */
1277 * Split the colon-separated string of preferred languages into
1278 * language_tags array.
1281 /* collect language tag */
1282 for (; *s && (isalnum(*s) || *s == '_'); s++)
1283 strbuf_addch(&tag, *s == '_' ? '-' : *s);
1285 /* skip .codeset, @modifier and any other unnecessary parts */
1286 while (*s && *s != ':')
1291 REALLOC_ARRAY(language_tags, num_langs);
1292 language_tags[num_langs - 1] = strbuf_detach(&tag, NULL);
1293 if (num_langs >= MAX_LANGUAGE_TAGS - 1) /* -1 for '*' */
1298 /* write Accept-Language header into buf */
1300 int last_buf_len = 0;
1306 REALLOC_ARRAY(language_tags, num_langs + 1);
1307 language_tags[num_langs++] = "*"; /* it's OK; this won't be freed */
1309 /* compute decimal_places */
1310 for (max_q = 1, decimal_places = 0;
1311 max_q < num_langs && decimal_places <= MAX_DECIMAL_PLACES;
1312 decimal_places++, max_q *= 10)
1315 xsnprintf(q_format, sizeof(q_format), ";q=0.%%0%dd", decimal_places);
1317 strbuf_addstr(buf, "Accept-Language: ");
1319 for (i = 0; i < num_langs; i++) {
1321 strbuf_addstr(buf, ", ");
1323 strbuf_addstr(buf, language_tags[i]);
1326 strbuf_addf(buf, q_format, max_q - i);
1328 if (buf->len > MAX_ACCEPT_LANGUAGE_HEADER_SIZE) {
1329 strbuf_remove(buf, last_buf_len, buf->len - last_buf_len);
1333 last_buf_len = buf->len;
1337 /* free language tags -- last one is a static '*' */
1338 for (i = 0; i < num_langs - 1; i++)
1339 free(language_tags[i]);
1340 free(language_tags);
1344 * Get an Accept-Language header which indicates user's preferred languages.
1348 * LANGUAGE=ko:en -> "Accept-Language: ko, en; q=0.9, *; q=0.1"
1349 * LANGUAGE=ko_KR.UTF-8:sr@latin -> "Accept-Language: ko-KR, sr; q=0.9, *; q=0.1"
1350 * LANGUAGE=ko LANG=en_US.UTF-8 -> "Accept-Language: ko, *; q=0.1"
1351 * LANGUAGE= LANG=en_US.UTF-8 -> "Accept-Language: en-US, *; q=0.1"
1352 * LANGUAGE= LANG=C -> ""
1354 static const char *get_accept_language(void)
1356 if (!cached_accept_language) {
1357 struct strbuf buf = STRBUF_INIT;
1358 write_accept_language(&buf);
1360 cached_accept_language = strbuf_detach(&buf, NULL);
1363 return cached_accept_language;
1366 static void http_opt_request_remainder(CURL *curl, off_t pos)
1369 xsnprintf(buf, sizeof(buf), "%"PRIuMAX"-", (uintmax_t)pos);
1370 curl_easy_setopt(curl, CURLOPT_RANGE, buf);
1373 /* http_request() targets */
1374 #define HTTP_REQUEST_STRBUF 0
1375 #define HTTP_REQUEST_FILE 1
1377 static int http_request(const char *url,
1378 void *result, int target,
1379 const struct http_get_options *options)
1381 struct active_request_slot *slot;
1382 struct slot_results results;
1383 struct curl_slist *headers = NULL;
1384 struct strbuf buf = STRBUF_INIT;
1385 const char *accept_language;
1388 slot = get_active_slot();
1389 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
1391 if (result == NULL) {
1392 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
1394 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
1395 curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
1397 if (target == HTTP_REQUEST_FILE) {
1398 off_t posn = ftello(result);
1399 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
1402 http_opt_request_remainder(slot->curl, posn);
1404 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
1408 accept_language = get_accept_language();
1410 if (accept_language)
1411 headers = curl_slist_append(headers, accept_language);
1413 strbuf_addstr(&buf, "Pragma:");
1414 if (options && options->no_cache)
1415 strbuf_addstr(&buf, " no-cache");
1416 if (options && options->keep_error)
1417 curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0);
1419 headers = curl_slist_append(headers, buf.buf);
1421 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1422 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
1423 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
1425 ret = run_one_slot(slot, &results);
1427 if (options && options->content_type) {
1428 struct strbuf raw = STRBUF_INIT;
1429 curlinfo_strbuf(slot->curl, CURLINFO_CONTENT_TYPE, &raw);
1430 extract_content_type(&raw, options->content_type,
1432 strbuf_release(&raw);
1435 if (options && options->effective_url)
1436 curlinfo_strbuf(slot->curl, CURLINFO_EFFECTIVE_URL,
1437 options->effective_url);
1439 curl_slist_free_all(headers);
1440 strbuf_release(&buf);
1446 * Update the "base" url to a more appropriate value, as deduced by
1447 * redirects seen when requesting a URL starting with "url".
1449 * The "asked" parameter is a URL that we asked curl to access, and must begin
1452 * The "got" parameter is the URL that curl reported to us as where we ended
1455 * Returns 1 if we updated the base url, 0 otherwise.
1457 * Our basic strategy is to compare "base" and "asked" to find the bits
1458 * specific to our request. We then strip those bits off of "got" to yield the
1459 * new base. So for example, if our base is "http://example.com/foo.git",
1460 * and we ask for "http://example.com/foo.git/info/refs", we might end up
1461 * with "https://other.example.com/foo.git/info/refs". We would want the
1462 * new URL to become "https://other.example.com/foo.git".
1464 * Note that this assumes a sane redirect scheme. It's entirely possible
1465 * in the example above to end up at a URL that does not even end in
1466 * "info/refs". In such a case we simply punt, as there is not much we can
1467 * do (and such a scheme is unlikely to represent a real git repository,
1468 * which means we are likely about to abort anyway).
1470 static int update_url_from_redirect(struct strbuf *base,
1472 const struct strbuf *got)
1477 if (!strcmp(asked, got->buf))
1480 if (!skip_prefix(asked, base->buf, &tail))
1481 die("BUG: update_url_from_redirect: %s is not a superset of %s",
1484 tail_len = strlen(tail);
1486 if (got->len < tail_len ||
1487 strcmp(tail, got->buf + got->len - tail_len))
1488 return 0; /* insane redirect scheme */
1491 strbuf_add(base, got->buf, got->len - tail_len);
1495 static int http_request_reauth(const char *url,
1496 void *result, int target,
1497 struct http_get_options *options)
1499 int ret = http_request(url, result, target, options);
1501 if (options && options->effective_url && options->base_url) {
1502 if (update_url_from_redirect(options->base_url,
1503 url, options->effective_url)) {
1504 credential_from_url(&http_auth, options->base_url->buf);
1505 url = options->effective_url->buf;
1509 if (ret != HTTP_REAUTH)
1513 * If we are using KEEP_ERROR, the previous request may have
1514 * put cruft into our output stream; we should clear it out before
1515 * making our next request. We only know how to do this for
1516 * the strbuf case, but that is enough to satisfy current callers.
1518 if (options && options->keep_error) {
1520 case HTTP_REQUEST_STRBUF:
1521 strbuf_reset(result);
1524 die("BUG: HTTP_KEEP_ERROR is only supported with strbufs");
1528 credential_fill(&http_auth);
1530 return http_request(url, result, target, options);
1533 int http_get_strbuf(const char *url,
1534 struct strbuf *result,
1535 struct http_get_options *options)
1537 return http_request_reauth(url, result, HTTP_REQUEST_STRBUF, options);
1541 * Downloads a URL and stores the result in the given file.
1543 * If a previous interrupted download is detected (i.e. a previous temporary
1544 * file is still around) the download is resumed.
1546 static int http_get_file(const char *url, const char *filename,
1547 struct http_get_options *options)
1550 struct strbuf tmpfile = STRBUF_INIT;
1553 strbuf_addf(&tmpfile, "%s.temp", filename);
1554 result = fopen(tmpfile.buf, "a");
1556 error("Unable to open local file %s", tmpfile.buf);
1561 ret = http_request_reauth(url, result, HTTP_REQUEST_FILE, options);
1564 if (ret == HTTP_OK && finalize_object_file(tmpfile.buf, filename))
1567 strbuf_release(&tmpfile);
1571 int http_fetch_ref(const char *base, struct ref *ref)
1573 struct http_get_options options = {0};
1575 struct strbuf buffer = STRBUF_INIT;
1578 options.no_cache = 1;
1580 url = quote_ref_url(base, ref->name);
1581 if (http_get_strbuf(url, &buffer, &options) == HTTP_OK) {
1582 strbuf_rtrim(&buffer);
1583 if (buffer.len == 40)
1584 ret = get_oid_hex(buffer.buf, &ref->old_oid);
1585 else if (starts_with(buffer.buf, "ref: ")) {
1586 ref->symref = xstrdup(buffer.buf + 5);
1591 strbuf_release(&buffer);
1596 /* Helpers for fetching packs */
1597 static char *fetch_pack_index(unsigned char *sha1, const char *base_url)
1600 struct strbuf buf = STRBUF_INIT;
1602 if (http_is_verbose)
1603 fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1));
1605 end_url_with_slash(&buf, base_url);
1606 strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1));
1607 url = strbuf_detach(&buf, NULL);
1609 strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1));
1610 tmp = strbuf_detach(&buf, NULL);
1612 if (http_get_file(url, tmp, NULL) != HTTP_OK) {
1613 error("Unable to get pack index %s", url);
1622 static int fetch_and_setup_pack_index(struct packed_git **packs_head,
1623 unsigned char *sha1, const char *base_url)
1625 struct packed_git *new_pack;
1626 char *tmp_idx = NULL;
1629 if (has_pack_index(sha1)) {
1630 new_pack = parse_pack_index(sha1, sha1_pack_index_name(sha1));
1632 return -1; /* parse_pack_index() already issued error message */
1636 tmp_idx = fetch_pack_index(sha1, base_url);
1640 new_pack = parse_pack_index(sha1, tmp_idx);
1645 return -1; /* parse_pack_index() already issued error message */
1648 ret = verify_pack_index(new_pack);
1650 close_pack_index(new_pack);
1651 ret = finalize_object_file(tmp_idx, sha1_pack_index_name(sha1));
1658 new_pack->next = *packs_head;
1659 *packs_head = new_pack;
1663 int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
1665 struct http_get_options options = {0};
1668 struct strbuf buf = STRBUF_INIT;
1669 unsigned char sha1[20];
1671 end_url_with_slash(&buf, base_url);
1672 strbuf_addstr(&buf, "objects/info/packs");
1673 url = strbuf_detach(&buf, NULL);
1675 options.no_cache = 1;
1676 ret = http_get_strbuf(url, &buf, &options);
1681 while (i < buf.len) {
1685 if (i + 52 <= buf.len &&
1686 starts_with(data + i, " pack-") &&
1687 starts_with(data + i + 46, ".pack\n")) {
1688 get_sha1_hex(data + i + 6, sha1);
1689 fetch_and_setup_pack_index(packs_head, sha1,
1695 while (i < buf.len && data[i] != '\n')
1706 void release_http_pack_request(struct http_pack_request *preq)
1708 if (preq->packfile != NULL) {
1709 fclose(preq->packfile);
1710 preq->packfile = NULL;
1717 int finish_http_pack_request(struct http_pack_request *preq)
1719 struct packed_git **lst;
1720 struct packed_git *p = preq->target;
1723 struct child_process ip = CHILD_PROCESS_INIT;
1724 const char *ip_argv[8];
1726 close_pack_index(p);
1728 fclose(preq->packfile);
1729 preq->packfile = NULL;
1733 lst = &((*lst)->next);
1734 *lst = (*lst)->next;
1736 if (!strip_suffix(preq->tmpfile, ".pack.temp", &len))
1737 die("BUG: pack tmpfile does not end in .pack.temp?");
1738 tmp_idx = xstrfmt("%.*s.idx.temp", (int)len, preq->tmpfile);
1740 ip_argv[0] = "index-pack";
1742 ip_argv[2] = tmp_idx;
1743 ip_argv[3] = preq->tmpfile;
1751 if (run_command(&ip)) {
1752 unlink(preq->tmpfile);
1758 unlink(sha1_pack_index_name(p->sha1));
1760 if (finalize_object_file(preq->tmpfile, sha1_pack_name(p->sha1))
1761 || finalize_object_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
1766 install_packed_git(p);
1771 struct http_pack_request *new_http_pack_request(
1772 struct packed_git *target, const char *base_url)
1774 off_t prev_posn = 0;
1775 struct strbuf buf = STRBUF_INIT;
1776 struct http_pack_request *preq;
1778 preq = xcalloc(1, sizeof(*preq));
1779 preq->target = target;
1781 end_url_with_slash(&buf, base_url);
1782 strbuf_addf(&buf, "objects/pack/pack-%s.pack",
1783 sha1_to_hex(target->sha1));
1784 preq->url = strbuf_detach(&buf, NULL);
1786 snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp",
1787 sha1_pack_name(target->sha1));
1788 preq->packfile = fopen(preq->tmpfile, "a");
1789 if (!preq->packfile) {
1790 error("Unable to open local file %s for pack",
1795 preq->slot = get_active_slot();
1796 curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
1797 curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
1798 curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url);
1799 curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1803 * If there is data present from a previous transfer attempt,
1804 * resume where it left off
1806 prev_posn = ftello(preq->packfile);
1808 if (http_is_verbose)
1810 "Resuming fetch of pack %s at byte %"PRIuMAX"\n",
1811 sha1_to_hex(target->sha1), (uintmax_t)prev_posn);
1812 http_opt_request_remainder(preq->slot->curl, prev_posn);
1823 /* Helpers for fetching objects (loose) */
1824 static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb,
1827 unsigned char expn[4096];
1828 size_t size = eltsize * nmemb;
1830 struct http_object_request *freq =
1831 (struct http_object_request *)data;
1833 ssize_t retval = xwrite(freq->localfile,
1834 (char *) ptr + posn, size - posn);
1838 } while (posn < size);
1840 freq->stream.avail_in = size;
1841 freq->stream.next_in = (void *)ptr;
1843 freq->stream.next_out = expn;
1844 freq->stream.avail_out = sizeof(expn);
1845 freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH);
1846 git_SHA1_Update(&freq->c, expn,
1847 sizeof(expn) - freq->stream.avail_out);
1848 } while (freq->stream.avail_in && freq->zret == Z_OK);
1852 struct http_object_request *new_http_object_request(const char *base_url,
1853 unsigned char *sha1)
1855 char *hex = sha1_to_hex(sha1);
1856 const char *filename;
1857 char prevfile[PATH_MAX];
1859 char prev_buf[PREV_BUF_SIZE];
1860 ssize_t prev_read = 0;
1861 off_t prev_posn = 0;
1862 struct http_object_request *freq;
1864 freq = xcalloc(1, sizeof(*freq));
1865 hashcpy(freq->sha1, sha1);
1866 freq->localfile = -1;
1868 filename = sha1_file_name(sha1);
1869 snprintf(freq->tmpfile, sizeof(freq->tmpfile),
1870 "%s.temp", filename);
1872 snprintf(prevfile, sizeof(prevfile), "%s.prev", filename);
1873 unlink_or_warn(prevfile);
1874 rename(freq->tmpfile, prevfile);
1875 unlink_or_warn(freq->tmpfile);
1877 if (freq->localfile != -1)
1878 error("fd leakage in start: %d", freq->localfile);
1879 freq->localfile = open(freq->tmpfile,
1880 O_WRONLY | O_CREAT | O_EXCL, 0666);
1882 * This could have failed due to the "lazy directory creation";
1883 * try to mkdir the last path component.
1885 if (freq->localfile < 0 && errno == ENOENT) {
1886 char *dir = strrchr(freq->tmpfile, '/');
1889 mkdir(freq->tmpfile, 0777);
1892 freq->localfile = open(freq->tmpfile,
1893 O_WRONLY | O_CREAT | O_EXCL, 0666);
1896 if (freq->localfile < 0) {
1897 error("Couldn't create temporary file %s: %s",
1898 freq->tmpfile, strerror(errno));
1902 git_inflate_init(&freq->stream);
1904 git_SHA1_Init(&freq->c);
1906 freq->url = get_remote_object_url(base_url, hex, 0);
1909 * If a previous temp file is present, process what was already
1912 prevlocal = open(prevfile, O_RDONLY);
1913 if (prevlocal != -1) {
1915 prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
1917 if (fwrite_sha1_file(prev_buf,
1920 freq) == prev_read) {
1921 prev_posn += prev_read;
1926 } while (prev_read > 0);
1929 unlink_or_warn(prevfile);
1932 * Reset inflate/SHA1 if there was an error reading the previous temp
1933 * file; also rewind to the beginning of the local file.
1935 if (prev_read == -1) {
1936 memset(&freq->stream, 0, sizeof(freq->stream));
1937 git_inflate_init(&freq->stream);
1938 git_SHA1_Init(&freq->c);
1941 lseek(freq->localfile, 0, SEEK_SET);
1942 if (ftruncate(freq->localfile, 0) < 0) {
1943 error("Couldn't truncate temporary file %s: %s",
1944 freq->tmpfile, strerror(errno));
1950 freq->slot = get_active_slot();
1952 curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
1953 curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
1954 curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
1955 curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url);
1956 curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
1959 * If we have successfully processed data from a previous fetch
1960 * attempt, only fetch the data we don't already have.
1963 if (http_is_verbose)
1965 "Resuming fetch of object %s at byte %"PRIuMAX"\n",
1966 hex, (uintmax_t)prev_posn);
1967 http_opt_request_remainder(freq->slot->curl, prev_posn);
1978 void process_http_object_request(struct http_object_request *freq)
1980 if (freq->slot == NULL)
1982 freq->curl_result = freq->slot->curl_result;
1983 freq->http_code = freq->slot->http_code;
1987 int finish_http_object_request(struct http_object_request *freq)
1991 close(freq->localfile);
1992 freq->localfile = -1;
1994 process_http_object_request(freq);
1996 if (freq->http_code == 416) {
1997 warning("requested range invalid; we may already have all the data.");
1998 } else if (freq->curl_result != CURLE_OK) {
1999 if (stat(freq->tmpfile, &st) == 0)
2000 if (st.st_size == 0)
2001 unlink_or_warn(freq->tmpfile);
2005 git_inflate_end(&freq->stream);
2006 git_SHA1_Final(freq->real_sha1, &freq->c);
2007 if (freq->zret != Z_STREAM_END) {
2008 unlink_or_warn(freq->tmpfile);
2011 if (hashcmp(freq->sha1, freq->real_sha1)) {
2012 unlink_or_warn(freq->tmpfile);
2016 finalize_object_file(freq->tmpfile, sha1_file_name(freq->sha1));
2018 return freq->rename;
2021 void abort_http_object_request(struct http_object_request *freq)
2023 unlink_or_warn(freq->tmpfile);
2025 release_http_object_request(freq);
2028 void release_http_object_request(struct http_object_request *freq)
2030 if (freq->localfile != -1) {
2031 close(freq->localfile);
2032 freq->localfile = -1;
2034 if (freq->url != NULL) {
2038 if (freq->slot != NULL) {
2039 freq->slot->callback_func = NULL;
2040 freq->slot->callback_data = NULL;
2041 release_active_slot(freq->slot);