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 static const char *ssl_cainfo
;
66 static long curl_low_speed_limit
= -1;
67 static long curl_low_speed_time
= -1;
68 static int curl_ftp_no_epsv
;
69 static const char *curl_http_proxy
;
70 static const char *http_proxy_authmethod
;
74 } proxy_authmethods
[] = {
75 { "basic", CURLAUTH_BASIC
},
76 { "digest", CURLAUTH_DIGEST
},
77 { "negotiate", CURLAUTH_GSSNEGOTIATE
},
78 { "ntlm", CURLAUTH_NTLM
},
79 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
80 { "anyauth", CURLAUTH_ANY
},
83 * CURLAUTH_DIGEST_IE has no corresponding command-line option in
84 * curl(1) and is not included in CURLAUTH_ANY, so we leave it out
88 static struct credential proxy_auth
= CREDENTIAL_INIT
;
89 static const char *curl_proxyuserpwd
;
90 static const char *curl_cookie_file
;
91 static int curl_save_cookies
;
92 struct credential http_auth
= CREDENTIAL_INIT
;
93 static int http_proactive_auth
;
94 static const char *user_agent
;
96 #if LIBCURL_VERSION_NUM >= 0x071700
97 /* Use CURLOPT_KEYPASSWD as is */
98 #elif LIBCURL_VERSION_NUM >= 0x070903
99 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
101 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
104 static struct credential cert_auth
= CREDENTIAL_INIT
;
105 static int ssl_cert_password_required
;
106 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
107 static unsigned long http_auth_methods
= CURLAUTH_ANY
;
110 static struct curl_slist
*pragma_header
;
111 static struct curl_slist
*no_pragma_header
;
113 static struct active_request_slot
*active_queue_head
;
115 static char *cached_accept_language
;
117 size_t fread_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
119 size_t size
= eltsize
* nmemb
;
120 struct buffer
*buffer
= buffer_
;
122 if (size
> buffer
->buf
.len
- buffer
->posn
)
123 size
= buffer
->buf
.len
- buffer
->posn
;
124 memcpy(ptr
, buffer
->buf
.buf
+ buffer
->posn
, size
);
125 buffer
->posn
+= size
;
130 #ifndef NO_CURL_IOCTL
131 curlioerr
ioctl_buffer(CURL
*handle
, int cmd
, void *clientp
)
133 struct buffer
*buffer
= clientp
;
139 case CURLIOCMD_RESTARTREAD
:
144 return CURLIOE_UNKNOWNCMD
;
149 size_t fwrite_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
151 size_t size
= eltsize
* nmemb
;
152 struct strbuf
*buffer
= buffer_
;
154 strbuf_add(buffer
, ptr
, size
);
158 size_t fwrite_null(char *ptr
, size_t eltsize
, size_t nmemb
, void *strbuf
)
160 return eltsize
* nmemb
;
163 static void closedown_active_slot(struct active_request_slot
*slot
)
169 static void finish_active_slot(struct active_request_slot
*slot
)
171 closedown_active_slot(slot
);
172 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CODE
, &slot
->http_code
);
174 if (slot
->finished
!= NULL
)
175 (*slot
->finished
) = 1;
177 /* Store slot results so they can be read after the slot is reused */
178 if (slot
->results
!= NULL
) {
179 slot
->results
->curl_result
= slot
->curl_result
;
180 slot
->results
->http_code
= slot
->http_code
;
181 #if LIBCURL_VERSION_NUM >= 0x070a08
182 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTPAUTH_AVAIL
,
183 &slot
->results
->auth_avail
);
185 slot
->results
->auth_avail
= 0;
188 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CONNECTCODE
,
189 &slot
->results
->http_connectcode
);
192 /* Run callback if appropriate */
193 if (slot
->callback_func
!= NULL
)
194 slot
->callback_func(slot
->callback_data
);
197 #ifdef USE_CURL_MULTI
198 static void process_curl_messages(void)
201 struct active_request_slot
*slot
;
202 CURLMsg
*curl_message
= curl_multi_info_read(curlm
, &num_messages
);
204 while (curl_message
!= NULL
) {
205 if (curl_message
->msg
== CURLMSG_DONE
) {
206 int curl_result
= curl_message
->data
.result
;
207 slot
= active_queue_head
;
208 while (slot
!= NULL
&&
209 slot
->curl
!= curl_message
->easy_handle
)
212 curl_multi_remove_handle(curlm
, slot
->curl
);
213 slot
->curl_result
= curl_result
;
214 finish_active_slot(slot
);
216 fprintf(stderr
, "Received DONE message for unknown request!\n");
219 fprintf(stderr
, "Unknown CURL message received: %d\n",
220 (int)curl_message
->msg
);
222 curl_message
= curl_multi_info_read(curlm
, &num_messages
);
227 static int http_options(const char *var
, const char *value
, void *cb
)
229 if (!strcmp("http.sslverify", var
)) {
230 curl_ssl_verify
= git_config_bool(var
, value
);
233 if (!strcmp("http.sslcipherlist", var
))
234 return git_config_string(&ssl_cipherlist
, var
, value
);
235 if (!strcmp("http.sslversion", var
))
236 return git_config_string(&ssl_version
, var
, value
);
237 if (!strcmp("http.sslcert", var
))
238 return git_config_string(&ssl_cert
, var
, value
);
239 #if LIBCURL_VERSION_NUM >= 0x070903
240 if (!strcmp("http.sslkey", var
))
241 return git_config_string(&ssl_key
, var
, value
);
243 #if LIBCURL_VERSION_NUM >= 0x070908
244 if (!strcmp("http.sslcapath", var
))
245 return git_config_pathname(&ssl_capath
, var
, value
);
247 if (!strcmp("http.sslcainfo", var
))
248 return git_config_pathname(&ssl_cainfo
, var
, value
);
249 if (!strcmp("http.sslcertpasswordprotected", var
)) {
250 ssl_cert_password_required
= git_config_bool(var
, value
);
253 if (!strcmp("http.ssltry", var
)) {
254 curl_ssl_try
= git_config_bool(var
, value
);
257 if (!strcmp("http.minsessions", var
)) {
258 min_curl_sessions
= git_config_int(var
, value
);
259 #ifndef USE_CURL_MULTI
260 if (min_curl_sessions
> 1)
261 min_curl_sessions
= 1;
265 #ifdef USE_CURL_MULTI
266 if (!strcmp("http.maxrequests", var
)) {
267 max_requests
= git_config_int(var
, value
);
271 if (!strcmp("http.lowspeedlimit", var
)) {
272 curl_low_speed_limit
= (long)git_config_int(var
, value
);
275 if (!strcmp("http.lowspeedtime", var
)) {
276 curl_low_speed_time
= (long)git_config_int(var
, value
);
280 if (!strcmp("http.noepsv", var
)) {
281 curl_ftp_no_epsv
= git_config_bool(var
, value
);
284 if (!strcmp("http.proxy", var
))
285 return git_config_string(&curl_http_proxy
, var
, value
);
287 if (!strcmp("http.proxyauthmethod", var
))
288 return git_config_string(&http_proxy_authmethod
, var
, value
);
290 if (!strcmp("http.cookiefile", var
))
291 return git_config_string(&curl_cookie_file
, var
, value
);
292 if (!strcmp("http.savecookies", var
)) {
293 curl_save_cookies
= git_config_bool(var
, value
);
297 if (!strcmp("http.postbuffer", var
)) {
298 http_post_buffer
= git_config_int(var
, value
);
299 if (http_post_buffer
< LARGE_PACKET_MAX
)
300 http_post_buffer
= LARGE_PACKET_MAX
;
304 if (!strcmp("http.useragent", var
))
305 return git_config_string(&user_agent
, var
, value
);
307 /* Fall back on the default ones */
308 return git_default_config(var
, value
, cb
);
311 static void init_curl_http_auth(CURL
*result
)
313 if (!http_auth
.username
)
316 credential_fill(&http_auth
);
318 #if LIBCURL_VERSION_NUM >= 0x071301
319 curl_easy_setopt(result
, CURLOPT_USERNAME
, http_auth
.username
);
320 curl_easy_setopt(result
, CURLOPT_PASSWORD
, http_auth
.password
);
323 static struct strbuf up
= STRBUF_INIT
;
325 * Note that we assume we only ever have a single set of
326 * credentials in a given program run, so we do not have
327 * to worry about updating this buffer, only setting its
331 strbuf_addf(&up
, "%s:%s",
332 http_auth
.username
, http_auth
.password
);
333 curl_easy_setopt(result
, CURLOPT_USERPWD
, up
.buf
);
338 /* *var must be free-able */
339 static void var_override(const char **var
, char *value
)
343 *var
= xstrdup(value
);
347 static void set_proxyauth_name_password(CURL
*result
)
349 #if LIBCURL_VERSION_NUM >= 0x071301
350 curl_easy_setopt(result
, CURLOPT_PROXYUSERNAME
,
351 proxy_auth
.username
);
352 curl_easy_setopt(result
, CURLOPT_PROXYPASSWORD
,
353 proxy_auth
.password
);
355 struct strbuf s
= STRBUF_INIT
;
357 strbuf_addstr_urlencode(&s
, proxy_auth
.username
, 1);
358 strbuf_addch(&s
, ':');
359 strbuf_addstr_urlencode(&s
, proxy_auth
.password
, 1);
360 curl_proxyuserpwd
= strbuf_detach(&s
, NULL
);
361 curl_easy_setopt(result
, CURLOPT_PROXYUSERPWD
, curl_proxyuserpwd
);
365 static void init_curl_proxy_auth(CURL
*result
)
367 if (proxy_auth
.username
) {
368 if (!proxy_auth
.password
)
369 credential_fill(&proxy_auth
);
370 set_proxyauth_name_password(result
);
373 var_override(&http_proxy_authmethod
, getenv("GIT_HTTP_PROXY_AUTHMETHOD"));
375 #if LIBCURL_VERSION_NUM >= 0x070a07 /* CURLOPT_PROXYAUTH and CURLAUTH_ANY */
376 if (http_proxy_authmethod
) {
378 for (i
= 0; i
< ARRAY_SIZE(proxy_authmethods
); i
++) {
379 if (!strcmp(http_proxy_authmethod
, proxy_authmethods
[i
].name
)) {
380 curl_easy_setopt(result
, CURLOPT_PROXYAUTH
,
381 proxy_authmethods
[i
].curlauth_param
);
385 if (i
== ARRAY_SIZE(proxy_authmethods
)) {
386 warning("unsupported proxy authentication method %s: using anyauth",
387 http_proxy_authmethod
);
388 curl_easy_setopt(result
, CURLOPT_PROXYAUTH
, CURLAUTH_ANY
);
392 curl_easy_setopt(result
, CURLOPT_PROXYAUTH
, CURLAUTH_ANY
);
396 static int has_cert_password(void)
398 if (ssl_cert
== NULL
|| ssl_cert_password_required
!= 1)
400 if (!cert_auth
.password
) {
401 cert_auth
.protocol
= xstrdup("cert");
402 cert_auth
.username
= xstrdup("");
403 cert_auth
.path
= xstrdup(ssl_cert
);
404 credential_fill(&cert_auth
);
409 #if LIBCURL_VERSION_NUM >= 0x071900
410 static void set_curl_keepalive(CURL
*c
)
412 curl_easy_setopt(c
, CURLOPT_TCP_KEEPALIVE
, 1);
415 #elif LIBCURL_VERSION_NUM >= 0x071000
416 static int sockopt_callback(void *client
, curl_socket_t fd
, curlsocktype type
)
420 socklen_t len
= (socklen_t
)sizeof(ka
);
422 if (type
!= CURLSOCKTYPE_IPCXN
)
425 rc
= setsockopt(fd
, SOL_SOCKET
, SO_KEEPALIVE
, (void *)&ka
, len
);
427 warning("unable to set SO_KEEPALIVE on socket %s",
430 return 0; /* CURL_SOCKOPT_OK only exists since curl 7.21.5 */
433 static void set_curl_keepalive(CURL
*c
)
435 curl_easy_setopt(c
, CURLOPT_SOCKOPTFUNCTION
, sockopt_callback
);
439 static void set_curl_keepalive(CURL
*c
)
441 /* not supported on older curl versions */
445 static CURL
*get_curl_handle(void)
447 CURL
*result
= curl_easy_init();
448 long allowed_protocols
= 0;
451 die("curl_easy_init failed");
453 if (!curl_ssl_verify
) {
454 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 0);
455 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 0);
457 /* Verify authenticity of the peer's certificate */
458 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 1);
459 /* The name in the cert must match whom we tried to connect */
460 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 2);
463 #if LIBCURL_VERSION_NUM >= 0x070907
464 curl_easy_setopt(result
, CURLOPT_NETRC
, CURL_NETRC_OPTIONAL
);
466 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
467 curl_easy_setopt(result
, CURLOPT_HTTPAUTH
, CURLAUTH_ANY
);
470 if (http_proactive_auth
)
471 init_curl_http_auth(result
);
473 if (getenv("GIT_SSL_VERSION"))
474 ssl_version
= getenv("GIT_SSL_VERSION");
475 if (ssl_version
&& *ssl_version
) {
477 for (i
= 0; i
< ARRAY_SIZE(sslversions
); i
++) {
478 if (!strcmp(ssl_version
, sslversions
[i
].name
)) {
479 curl_easy_setopt(result
, CURLOPT_SSLVERSION
,
480 sslversions
[i
].ssl_version
);
484 if (i
== ARRAY_SIZE(sslversions
))
485 warning("unsupported ssl version %s: using default",
489 if (getenv("GIT_SSL_CIPHER_LIST"))
490 ssl_cipherlist
= getenv("GIT_SSL_CIPHER_LIST");
491 if (ssl_cipherlist
!= NULL
&& *ssl_cipherlist
)
492 curl_easy_setopt(result
, CURLOPT_SSL_CIPHER_LIST
,
495 if (ssl_cert
!= NULL
)
496 curl_easy_setopt(result
, CURLOPT_SSLCERT
, ssl_cert
);
497 if (has_cert_password())
498 curl_easy_setopt(result
, CURLOPT_KEYPASSWD
, cert_auth
.password
);
499 #if LIBCURL_VERSION_NUM >= 0x070903
501 curl_easy_setopt(result
, CURLOPT_SSLKEY
, ssl_key
);
503 #if LIBCURL_VERSION_NUM >= 0x070908
504 if (ssl_capath
!= NULL
)
505 curl_easy_setopt(result
, CURLOPT_CAPATH
, ssl_capath
);
507 if (ssl_cainfo
!= NULL
)
508 curl_easy_setopt(result
, CURLOPT_CAINFO
, ssl_cainfo
);
510 if (curl_low_speed_limit
> 0 && curl_low_speed_time
> 0) {
511 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_LIMIT
,
512 curl_low_speed_limit
);
513 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_TIME
,
514 curl_low_speed_time
);
517 curl_easy_setopt(result
, CURLOPT_FOLLOWLOCATION
, 1);
518 curl_easy_setopt(result
, CURLOPT_MAXREDIRS
, 20);
519 #if LIBCURL_VERSION_NUM >= 0x071301
520 curl_easy_setopt(result
, CURLOPT_POSTREDIR
, CURL_REDIR_POST_ALL
);
521 #elif LIBCURL_VERSION_NUM >= 0x071101
522 curl_easy_setopt(result
, CURLOPT_POST301
, 1);
524 #if LIBCURL_VERSION_NUM >= 0x071304
525 if (is_transport_allowed("http"))
526 allowed_protocols
|= CURLPROTO_HTTP
;
527 if (is_transport_allowed("https"))
528 allowed_protocols
|= CURLPROTO_HTTPS
;
529 if (is_transport_allowed("ftp"))
530 allowed_protocols
|= CURLPROTO_FTP
;
531 if (is_transport_allowed("ftps"))
532 allowed_protocols
|= CURLPROTO_FTPS
;
533 curl_easy_setopt(result
, CURLOPT_REDIR_PROTOCOLS
, allowed_protocols
);
535 if (transport_restrict_protocols())
536 warning("protocol restrictions not applied to curl redirects because\n"
537 "your curl version is too old (>= 7.19.4)");
540 if (getenv("GIT_CURL_VERBOSE"))
541 curl_easy_setopt(result
, CURLOPT_VERBOSE
, 1);
543 curl_easy_setopt(result
, CURLOPT_USERAGENT
,
544 user_agent
? user_agent
: git_user_agent());
546 if (curl_ftp_no_epsv
)
547 curl_easy_setopt(result
, CURLOPT_FTP_USE_EPSV
, 0);
549 #ifdef CURLOPT_USE_SSL
551 curl_easy_setopt(result
, CURLOPT_USE_SSL
, CURLUSESSL_TRY
);
555 * CURL also examines these variables as a fallback; but we need to query
556 * them here in order to decide whether to prompt for missing password (cf.
557 * init_curl_proxy_auth()).
559 * Unlike many other common environment variables, these are historically
560 * lowercase only. It appears that CURL did not know this and implemented
561 * only uppercase variants, which was later corrected to take both - with
562 * the exception of http_proxy, which is lowercase only also in CURL. As
563 * the lowercase versions are the historical quasi-standard, they take
564 * precedence here, as in CURL.
566 if (!curl_http_proxy
) {
567 if (!strcmp(http_auth
.protocol
, "https")) {
568 var_override(&curl_http_proxy
, getenv("HTTPS_PROXY"));
569 var_override(&curl_http_proxy
, getenv("https_proxy"));
571 var_override(&curl_http_proxy
, getenv("http_proxy"));
573 if (!curl_http_proxy
) {
574 var_override(&curl_http_proxy
, getenv("ALL_PROXY"));
575 var_override(&curl_http_proxy
, getenv("all_proxy"));
579 if (curl_http_proxy
) {
580 curl_easy_setopt(result
, CURLOPT_PROXY
, curl_http_proxy
);
581 #if LIBCURL_VERSION_NUM >= 0x071800
582 if (starts_with(curl_http_proxy
, "socks5"))
583 curl_easy_setopt(result
,
584 CURLOPT_PROXYTYPE
, CURLPROXY_SOCKS5
);
585 else if (starts_with(curl_http_proxy
, "socks4a"))
586 curl_easy_setopt(result
,
587 CURLOPT_PROXYTYPE
, CURLPROXY_SOCKS4A
);
588 else if (starts_with(curl_http_proxy
, "socks"))
589 curl_easy_setopt(result
,
590 CURLOPT_PROXYTYPE
, CURLPROXY_SOCKS4
);
592 if (strstr(curl_http_proxy
, "://"))
593 credential_from_url(&proxy_auth
, curl_http_proxy
);
595 struct strbuf url
= STRBUF_INIT
;
596 strbuf_addf(&url
, "http://%s", curl_http_proxy
);
597 credential_from_url(&proxy_auth
, url
.buf
);
598 strbuf_release(&url
);
601 curl_easy_setopt(result
, CURLOPT_PROXY
, proxy_auth
.host
);
603 init_curl_proxy_auth(result
);
605 set_curl_keepalive(result
);
610 static void set_from_env(const char **var
, const char *envname
)
612 const char *val
= getenv(envname
);
617 void http_init(struct remote
*remote
, const char *url
, int proactive_auth
)
619 char *low_speed_limit
;
620 char *low_speed_time
;
621 char *normalized_url
;
622 struct urlmatch_config config
= { STRING_LIST_INIT_DUP
};
624 config
.section
= "http";
626 config
.collect_fn
= http_options
;
627 config
.cascade_fn
= git_default_config
;
631 normalized_url
= url_normalize(url
, &config
.url
);
633 git_config(urlmatch_config_entry
, &config
);
634 free(normalized_url
);
636 if (curl_global_init(CURL_GLOBAL_ALL
) != CURLE_OK
)
637 die("curl_global_init failed");
639 http_proactive_auth
= proactive_auth
;
641 if (remote
&& remote
->http_proxy
)
642 curl_http_proxy
= xstrdup(remote
->http_proxy
);
645 var_override(&http_proxy_authmethod
, remote
->http_proxy_authmethod
);
647 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
648 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
650 #ifdef USE_CURL_MULTI
652 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
653 if (http_max_requests
!= NULL
)
654 max_requests
= atoi(http_max_requests
);
657 curlm
= curl_multi_init();
659 die("curl_multi_init failed");
662 if (getenv("GIT_SSL_NO_VERIFY"))
665 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
666 #if LIBCURL_VERSION_NUM >= 0x070903
667 set_from_env(&ssl_key
, "GIT_SSL_KEY");
669 #if LIBCURL_VERSION_NUM >= 0x070908
670 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
672 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
674 set_from_env(&user_agent
, "GIT_HTTP_USER_AGENT");
676 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
677 if (low_speed_limit
!= NULL
)
678 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
679 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
680 if (low_speed_time
!= NULL
)
681 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
683 if (curl_ssl_verify
== -1)
686 curl_session_count
= 0;
687 #ifdef USE_CURL_MULTI
688 if (max_requests
< 1)
689 max_requests
= DEFAULT_MAX_REQUESTS
;
692 if (getenv("GIT_CURL_FTP_NO_EPSV"))
693 curl_ftp_no_epsv
= 1;
696 credential_from_url(&http_auth
, url
);
697 if (!ssl_cert_password_required
&&
698 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
699 starts_with(url
, "https://"))
700 ssl_cert_password_required
= 1;
703 #ifndef NO_CURL_EASY_DUPHANDLE
704 curl_default
= get_curl_handle();
708 void http_cleanup(void)
710 struct active_request_slot
*slot
= active_queue_head
;
712 while (slot
!= NULL
) {
713 struct active_request_slot
*next
= slot
->next
;
714 if (slot
->curl
!= NULL
) {
715 #ifdef USE_CURL_MULTI
716 curl_multi_remove_handle(curlm
, slot
->curl
);
718 curl_easy_cleanup(slot
->curl
);
723 active_queue_head
= NULL
;
725 #ifndef NO_CURL_EASY_DUPHANDLE
726 curl_easy_cleanup(curl_default
);
729 #ifdef USE_CURL_MULTI
730 curl_multi_cleanup(curlm
);
732 curl_global_cleanup();
734 curl_slist_free_all(pragma_header
);
735 pragma_header
= NULL
;
737 curl_slist_free_all(no_pragma_header
);
738 no_pragma_header
= NULL
;
740 if (curl_http_proxy
) {
741 free((void *)curl_http_proxy
);
742 curl_http_proxy
= NULL
;
745 if (proxy_auth
.password
) {
746 memset(proxy_auth
.password
, 0, strlen(proxy_auth
.password
));
747 free(proxy_auth
.password
);
748 proxy_auth
.password
= NULL
;
751 free((void *)curl_proxyuserpwd
);
752 curl_proxyuserpwd
= NULL
;
754 free((void *)http_proxy_authmethod
);
755 http_proxy_authmethod
= NULL
;
757 if (cert_auth
.password
!= NULL
) {
758 memset(cert_auth
.password
, 0, strlen(cert_auth
.password
));
759 free(cert_auth
.password
);
760 cert_auth
.password
= NULL
;
762 ssl_cert_password_required
= 0;
764 free(cached_accept_language
);
765 cached_accept_language
= NULL
;
768 struct active_request_slot
*get_active_slot(void)
770 struct active_request_slot
*slot
= active_queue_head
;
771 struct active_request_slot
*newslot
;
773 #ifdef USE_CURL_MULTI
776 /* Wait for a slot to open up if the queue is full */
777 while (active_requests
>= max_requests
) {
778 curl_multi_perform(curlm
, &num_transfers
);
779 if (num_transfers
< active_requests
)
780 process_curl_messages();
784 while (slot
!= NULL
&& slot
->in_use
)
788 newslot
= xmalloc(sizeof(*newslot
));
789 newslot
->curl
= NULL
;
791 newslot
->next
= NULL
;
793 slot
= active_queue_head
;
795 active_queue_head
= newslot
;
797 while (slot
->next
!= NULL
)
799 slot
->next
= newslot
;
804 if (slot
->curl
== NULL
) {
805 #ifdef NO_CURL_EASY_DUPHANDLE
806 slot
->curl
= get_curl_handle();
808 slot
->curl
= curl_easy_duphandle(curl_default
);
810 curl_session_count
++;
815 slot
->results
= NULL
;
816 slot
->finished
= NULL
;
817 slot
->callback_data
= NULL
;
818 slot
->callback_func
= NULL
;
819 curl_easy_setopt(slot
->curl
, CURLOPT_COOKIEFILE
, curl_cookie_file
);
820 if (curl_save_cookies
)
821 curl_easy_setopt(slot
->curl
, CURLOPT_COOKIEJAR
, curl_cookie_file
);
822 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
823 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
824 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
825 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
826 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
827 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, NULL
);
828 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
829 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
830 curl_easy_setopt(slot
->curl
, CURLOPT_FAILONERROR
, 1);
831 curl_easy_setopt(slot
->curl
, CURLOPT_RANGE
, NULL
);
833 #if LIBCURL_VERSION_NUM >= 0x070a08
834 curl_easy_setopt(slot
->curl
, CURLOPT_IPRESOLVE
, git_curl_ipresolve
);
836 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
837 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPAUTH
, http_auth_methods
);
839 if (http_auth
.password
)
840 init_curl_http_auth(slot
->curl
);
845 int start_active_slot(struct active_request_slot
*slot
)
847 #ifdef USE_CURL_MULTI
848 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
851 if (curlm_result
!= CURLM_OK
&&
852 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
859 * We know there must be something to do, since we just added
862 curl_multi_perform(curlm
, &num_transfers
);
867 #ifdef USE_CURL_MULTI
871 struct fill_chain
*next
;
874 static struct fill_chain
*fill_cfg
;
876 void add_fill_function(void *data
, int (*fill
)(void *))
878 struct fill_chain
*new = xmalloc(sizeof(*new));
879 struct fill_chain
**linkp
= &fill_cfg
;
884 linkp
= &(*linkp
)->next
;
888 void fill_active_slots(void)
890 struct active_request_slot
*slot
= active_queue_head
;
892 while (active_requests
< max_requests
) {
893 struct fill_chain
*fill
;
894 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
895 if (fill
->fill(fill
->data
))
902 while (slot
!= NULL
) {
903 if (!slot
->in_use
&& slot
->curl
!= NULL
904 && curl_session_count
> min_curl_sessions
) {
905 curl_easy_cleanup(slot
->curl
);
907 curl_session_count
--;
913 void step_active_slots(void)
916 CURLMcode curlm_result
;
919 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
920 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
921 if (num_transfers
< active_requests
) {
922 process_curl_messages();
928 void run_active_slot(struct active_request_slot
*slot
)
930 #ifdef USE_CURL_MULTI
935 struct timeval select_timeout
;
938 slot
->finished
= &finished
;
943 #if LIBCURL_VERSION_NUM >= 0x070f04
945 curl_multi_timeout(curlm
, &curl_timeout
);
946 if (curl_timeout
== 0) {
948 } else if (curl_timeout
== -1) {
949 select_timeout
.tv_sec
= 0;
950 select_timeout
.tv_usec
= 50000;
952 select_timeout
.tv_sec
= curl_timeout
/ 1000;
953 select_timeout
.tv_usec
= (curl_timeout
% 1000) * 1000;
956 select_timeout
.tv_sec
= 0;
957 select_timeout
.tv_usec
= 50000;
964 curl_multi_fdset(curlm
, &readfds
, &writefds
, &excfds
, &max_fd
);
967 * It can happen that curl_multi_timeout returns a pathologically
968 * long timeout when curl_multi_fdset returns no file descriptors
969 * to read. See commit message for more details.
972 (select_timeout
.tv_sec
> 0 ||
973 select_timeout
.tv_usec
> 50000)) {
974 select_timeout
.tv_sec
= 0;
975 select_timeout
.tv_usec
= 50000;
978 select(max_fd
+1, &readfds
, &writefds
, &excfds
, &select_timeout
);
982 while (slot
->in_use
) {
983 slot
->curl_result
= curl_easy_perform(slot
->curl
);
984 finish_active_slot(slot
);
989 static void release_active_slot(struct active_request_slot
*slot
)
991 closedown_active_slot(slot
);
992 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
993 #ifdef USE_CURL_MULTI
994 curl_multi_remove_handle(curlm
, slot
->curl
);
996 curl_easy_cleanup(slot
->curl
);
998 curl_session_count
--;
1000 #ifdef USE_CURL_MULTI
1001 fill_active_slots();
1005 void finish_all_active_slots(void)
1007 struct active_request_slot
*slot
= active_queue_head
;
1009 while (slot
!= NULL
)
1011 run_active_slot(slot
);
1012 slot
= active_queue_head
;
1018 /* Helpers for modifying and creating URLs */
1019 static inline int needs_quote(int ch
)
1021 if (((ch
>= 'A') && (ch
<= 'Z'))
1022 || ((ch
>= 'a') && (ch
<= 'z'))
1023 || ((ch
>= '0') && (ch
<= '9'))
1031 static char *quote_ref_url(const char *base
, const char *ref
)
1033 struct strbuf buf
= STRBUF_INIT
;
1037 end_url_with_slash(&buf
, base
);
1039 for (cp
= ref
; (ch
= *cp
) != 0; cp
++)
1040 if (needs_quote(ch
))
1041 strbuf_addf(&buf
, "%%%02x", ch
);
1043 strbuf_addch(&buf
, *cp
);
1045 return strbuf_detach(&buf
, NULL
);
1048 void append_remote_object_url(struct strbuf
*buf
, const char *url
,
1050 int only_two_digit_prefix
)
1052 end_url_with_slash(buf
, url
);
1054 strbuf_addf(buf
, "objects/%.*s/", 2, hex
);
1055 if (!only_two_digit_prefix
)
1056 strbuf_addf(buf
, "%s", hex
+2);
1059 char *get_remote_object_url(const char *url
, const char *hex
,
1060 int only_two_digit_prefix
)
1062 struct strbuf buf
= STRBUF_INIT
;
1063 append_remote_object_url(&buf
, url
, hex
, only_two_digit_prefix
);
1064 return strbuf_detach(&buf
, NULL
);
1067 static int handle_curl_result(struct slot_results
*results
)
1070 * If we see a failing http code with CURLE_OK, we have turned off
1071 * FAILONERROR (to keep the server's custom error response), and should
1072 * translate the code into failure here.
1074 if (results
->curl_result
== CURLE_OK
&&
1075 results
->http_code
>= 400) {
1076 results
->curl_result
= CURLE_HTTP_RETURNED_ERROR
;
1078 * Normally curl will already have put the "reason phrase"
1079 * from the server into curl_errorstr; unfortunately without
1080 * FAILONERROR it is lost, so we can give only the numeric
1083 snprintf(curl_errorstr
, sizeof(curl_errorstr
),
1084 "The requested URL returned error: %ld",
1085 results
->http_code
);
1088 if (results
->curl_result
== CURLE_OK
) {
1089 credential_approve(&http_auth
);
1090 if (proxy_auth
.password
)
1091 credential_approve(&proxy_auth
);
1093 } else if (missing_target(results
))
1094 return HTTP_MISSING_TARGET
;
1095 else if (results
->http_code
== 401) {
1096 if (http_auth
.username
&& http_auth
.password
) {
1097 credential_reject(&http_auth
);
1100 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
1101 http_auth_methods
&= ~CURLAUTH_GSSNEGOTIATE
;
1106 if (results
->http_connectcode
== 407)
1107 credential_reject(&proxy_auth
);
1108 #if LIBCURL_VERSION_NUM >= 0x070c00
1109 if (!curl_errorstr
[0])
1110 strlcpy(curl_errorstr
,
1111 curl_easy_strerror(results
->curl_result
),
1112 sizeof(curl_errorstr
));
1118 int run_one_slot(struct active_request_slot
*slot
,
1119 struct slot_results
*results
)
1121 slot
->results
= results
;
1122 if (!start_active_slot(slot
)) {
1123 snprintf(curl_errorstr
, sizeof(curl_errorstr
),
1124 "failed to start HTTP request");
1125 return HTTP_START_FAILED
;
1128 run_active_slot(slot
);
1129 return handle_curl_result(results
);
1132 static CURLcode
curlinfo_strbuf(CURL
*curl
, CURLINFO info
, struct strbuf
*buf
)
1138 ret
= curl_easy_getinfo(curl
, info
, &ptr
);
1140 strbuf_addstr(buf
, ptr
);
1145 * Check for and extract a content-type parameter. "raw"
1146 * should be positioned at the start of the potential
1147 * parameter, with any whitespace already removed.
1149 * "name" is the name of the parameter. The value is appended
1152 static int extract_param(const char *raw
, const char *name
,
1155 size_t len
= strlen(name
);
1157 if (strncasecmp(raw
, name
, len
))
1165 while (*raw
&& !isspace(*raw
) && *raw
!= ';')
1166 strbuf_addch(out
, *raw
++);
1171 * Extract a normalized version of the content type, with any
1172 * spaces suppressed, all letters lowercased, and no trailing ";"
1175 * Note that we will silently remove even invalid whitespace. For
1176 * example, "text / plain" is specifically forbidden by RFC 2616,
1177 * but "text/plain" is the only reasonable output, and this keeps
1180 * If the "charset" argument is not NULL, store the value of any
1181 * charset parameter there.
1184 * "TEXT/PLAIN; charset=utf-8" -> "text/plain", "utf-8"
1185 * "text / plain" -> "text/plain"
1187 static void extract_content_type(struct strbuf
*raw
, struct strbuf
*type
,
1188 struct strbuf
*charset
)
1193 strbuf_grow(type
, raw
->len
);
1194 for (p
= raw
->buf
; *p
; p
++) {
1201 strbuf_addch(type
, tolower(*p
));
1207 strbuf_reset(charset
);
1209 while (isspace(*p
) || *p
== ';')
1211 if (!extract_param(p
, "charset", charset
))
1213 while (*p
&& !isspace(*p
))
1217 if (!charset
->len
&& starts_with(type
->buf
, "text/"))
1218 strbuf_addstr(charset
, "ISO-8859-1");
1221 static void write_accept_language(struct strbuf
*buf
)
1224 * MAX_DECIMAL_PLACES must not be larger than 3. If it is larger than
1225 * that, q-value will be smaller than 0.001, the minimum q-value the
1226 * HTTP specification allows. See
1227 * http://tools.ietf.org/html/rfc7231#section-5.3.1 for q-value.
1229 const int MAX_DECIMAL_PLACES
= 3;
1230 const int MAX_LANGUAGE_TAGS
= 1000;
1231 const int MAX_ACCEPT_LANGUAGE_HEADER_SIZE
= 4000;
1232 char **language_tags
= NULL
;
1234 const char *s
= get_preferred_languages();
1236 struct strbuf tag
= STRBUF_INIT
;
1238 /* Don't add Accept-Language header if no language is preferred. */
1243 * Split the colon-separated string of preferred languages into
1244 * language_tags array.
1247 /* collect language tag */
1248 for (; *s
&& (isalnum(*s
) || *s
== '_'); s
++)
1249 strbuf_addch(&tag
, *s
== '_' ? '-' : *s
);
1251 /* skip .codeset, @modifier and any other unnecessary parts */
1252 while (*s
&& *s
!= ':')
1257 REALLOC_ARRAY(language_tags
, num_langs
);
1258 language_tags
[num_langs
- 1] = strbuf_detach(&tag
, NULL
);
1259 if (num_langs
>= MAX_LANGUAGE_TAGS
- 1) /* -1 for '*' */
1264 /* write Accept-Language header into buf */
1266 int last_buf_len
= 0;
1272 REALLOC_ARRAY(language_tags
, num_langs
+ 1);
1273 language_tags
[num_langs
++] = "*"; /* it's OK; this won't be freed */
1275 /* compute decimal_places */
1276 for (max_q
= 1, decimal_places
= 0;
1277 max_q
< num_langs
&& decimal_places
<= MAX_DECIMAL_PLACES
;
1278 decimal_places
++, max_q
*= 10)
1281 xsnprintf(q_format
, sizeof(q_format
), ";q=0.%%0%dd", decimal_places
);
1283 strbuf_addstr(buf
, "Accept-Language: ");
1285 for (i
= 0; i
< num_langs
; i
++) {
1287 strbuf_addstr(buf
, ", ");
1289 strbuf_addstr(buf
, language_tags
[i
]);
1292 strbuf_addf(buf
, q_format
, max_q
- i
);
1294 if (buf
->len
> MAX_ACCEPT_LANGUAGE_HEADER_SIZE
) {
1295 strbuf_remove(buf
, last_buf_len
, buf
->len
- last_buf_len
);
1299 last_buf_len
= buf
->len
;
1303 /* free language tags -- last one is a static '*' */
1304 for (i
= 0; i
< num_langs
- 1; i
++)
1305 free(language_tags
[i
]);
1306 free(language_tags
);
1310 * Get an Accept-Language header which indicates user's preferred languages.
1314 * LANGUAGE=ko:en -> "Accept-Language: ko, en; q=0.9, *; q=0.1"
1315 * LANGUAGE=ko_KR.UTF-8:sr@latin -> "Accept-Language: ko-KR, sr; q=0.9, *; q=0.1"
1316 * LANGUAGE=ko LANG=en_US.UTF-8 -> "Accept-Language: ko, *; q=0.1"
1317 * LANGUAGE= LANG=en_US.UTF-8 -> "Accept-Language: en-US, *; q=0.1"
1318 * LANGUAGE= LANG=C -> ""
1320 static const char *get_accept_language(void)
1322 if (!cached_accept_language
) {
1323 struct strbuf buf
= STRBUF_INIT
;
1324 write_accept_language(&buf
);
1326 cached_accept_language
= strbuf_detach(&buf
, NULL
);
1329 return cached_accept_language
;
1332 static void http_opt_request_remainder(CURL
*curl
, off_t pos
)
1335 xsnprintf(buf
, sizeof(buf
), "%"PRIuMAX
"-", (uintmax_t)pos
);
1336 curl_easy_setopt(curl
, CURLOPT_RANGE
, buf
);
1339 /* http_request() targets */
1340 #define HTTP_REQUEST_STRBUF 0
1341 #define HTTP_REQUEST_FILE 1
1343 static int http_request(const char *url
,
1344 void *result
, int target
,
1345 const struct http_get_options
*options
)
1347 struct active_request_slot
*slot
;
1348 struct slot_results results
;
1349 struct curl_slist
*headers
= NULL
;
1350 struct strbuf buf
= STRBUF_INIT
;
1351 const char *accept_language
;
1354 slot
= get_active_slot();
1355 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
1357 if (result
== NULL
) {
1358 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 1);
1360 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
1361 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, result
);
1363 if (target
== HTTP_REQUEST_FILE
) {
1364 off_t posn
= ftello(result
);
1365 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
1368 http_opt_request_remainder(slot
->curl
, posn
);
1370 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
1374 accept_language
= get_accept_language();
1376 if (accept_language
)
1377 headers
= curl_slist_append(headers
, accept_language
);
1379 strbuf_addstr(&buf
, "Pragma:");
1380 if (options
&& options
->no_cache
)
1381 strbuf_addstr(&buf
, " no-cache");
1382 if (options
&& options
->keep_error
)
1383 curl_easy_setopt(slot
->curl
, CURLOPT_FAILONERROR
, 0);
1385 headers
= curl_slist_append(headers
, buf
.buf
);
1387 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, url
);
1388 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
1389 curl_easy_setopt(slot
->curl
, CURLOPT_ENCODING
, "gzip");
1391 ret
= run_one_slot(slot
, &results
);
1393 if (options
&& options
->content_type
) {
1394 struct strbuf raw
= STRBUF_INIT
;
1395 curlinfo_strbuf(slot
->curl
, CURLINFO_CONTENT_TYPE
, &raw
);
1396 extract_content_type(&raw
, options
->content_type
,
1398 strbuf_release(&raw
);
1401 if (options
&& options
->effective_url
)
1402 curlinfo_strbuf(slot
->curl
, CURLINFO_EFFECTIVE_URL
,
1403 options
->effective_url
);
1405 curl_slist_free_all(headers
);
1406 strbuf_release(&buf
);
1412 * Update the "base" url to a more appropriate value, as deduced by
1413 * redirects seen when requesting a URL starting with "url".
1415 * The "asked" parameter is a URL that we asked curl to access, and must begin
1418 * The "got" parameter is the URL that curl reported to us as where we ended
1421 * Returns 1 if we updated the base url, 0 otherwise.
1423 * Our basic strategy is to compare "base" and "asked" to find the bits
1424 * specific to our request. We then strip those bits off of "got" to yield the
1425 * new base. So for example, if our base is "http://example.com/foo.git",
1426 * and we ask for "http://example.com/foo.git/info/refs", we might end up
1427 * with "https://other.example.com/foo.git/info/refs". We would want the
1428 * new URL to become "https://other.example.com/foo.git".
1430 * Note that this assumes a sane redirect scheme. It's entirely possible
1431 * in the example above to end up at a URL that does not even end in
1432 * "info/refs". In such a case we simply punt, as there is not much we can
1433 * do (and such a scheme is unlikely to represent a real git repository,
1434 * which means we are likely about to abort anyway).
1436 static int update_url_from_redirect(struct strbuf
*base
,
1438 const struct strbuf
*got
)
1443 if (!strcmp(asked
, got
->buf
))
1446 if (!skip_prefix(asked
, base
->buf
, &tail
))
1447 die("BUG: update_url_from_redirect: %s is not a superset of %s",
1450 tail_len
= strlen(tail
);
1452 if (got
->len
< tail_len
||
1453 strcmp(tail
, got
->buf
+ got
->len
- tail_len
))
1454 return 0; /* insane redirect scheme */
1457 strbuf_add(base
, got
->buf
, got
->len
- tail_len
);
1461 static int http_request_reauth(const char *url
,
1462 void *result
, int target
,
1463 struct http_get_options
*options
)
1465 int ret
= http_request(url
, result
, target
, options
);
1467 if (options
&& options
->effective_url
&& options
->base_url
) {
1468 if (update_url_from_redirect(options
->base_url
,
1469 url
, options
->effective_url
)) {
1470 credential_from_url(&http_auth
, options
->base_url
->buf
);
1471 url
= options
->effective_url
->buf
;
1475 if (ret
!= HTTP_REAUTH
)
1479 * If we are using KEEP_ERROR, the previous request may have
1480 * put cruft into our output stream; we should clear it out before
1481 * making our next request. We only know how to do this for
1482 * the strbuf case, but that is enough to satisfy current callers.
1484 if (options
&& options
->keep_error
) {
1486 case HTTP_REQUEST_STRBUF
:
1487 strbuf_reset(result
);
1490 die("BUG: HTTP_KEEP_ERROR is only supported with strbufs");
1494 credential_fill(&http_auth
);
1496 return http_request(url
, result
, target
, options
);
1499 int http_get_strbuf(const char *url
,
1500 struct strbuf
*result
,
1501 struct http_get_options
*options
)
1503 return http_request_reauth(url
, result
, HTTP_REQUEST_STRBUF
, options
);
1507 * Downloads a URL and stores the result in the given file.
1509 * If a previous interrupted download is detected (i.e. a previous temporary
1510 * file is still around) the download is resumed.
1512 static int http_get_file(const char *url
, const char *filename
,
1513 struct http_get_options
*options
)
1516 struct strbuf tmpfile
= STRBUF_INIT
;
1519 strbuf_addf(&tmpfile
, "%s.temp", filename
);
1520 result
= fopen(tmpfile
.buf
, "a");
1522 error("Unable to open local file %s", tmpfile
.buf
);
1527 ret
= http_request_reauth(url
, result
, HTTP_REQUEST_FILE
, options
);
1530 if (ret
== HTTP_OK
&& finalize_object_file(tmpfile
.buf
, filename
))
1533 strbuf_release(&tmpfile
);
1537 int http_fetch_ref(const char *base
, struct ref
*ref
)
1539 struct http_get_options options
= {0};
1541 struct strbuf buffer
= STRBUF_INIT
;
1544 options
.no_cache
= 1;
1546 url
= quote_ref_url(base
, ref
->name
);
1547 if (http_get_strbuf(url
, &buffer
, &options
) == HTTP_OK
) {
1548 strbuf_rtrim(&buffer
);
1549 if (buffer
.len
== 40)
1550 ret
= get_oid_hex(buffer
.buf
, &ref
->old_oid
);
1551 else if (starts_with(buffer
.buf
, "ref: ")) {
1552 ref
->symref
= xstrdup(buffer
.buf
+ 5);
1557 strbuf_release(&buffer
);
1562 /* Helpers for fetching packs */
1563 static char *fetch_pack_index(unsigned char *sha1
, const char *base_url
)
1566 struct strbuf buf
= STRBUF_INIT
;
1568 if (http_is_verbose
)
1569 fprintf(stderr
, "Getting index for pack %s\n", sha1_to_hex(sha1
));
1571 end_url_with_slash(&buf
, base_url
);
1572 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", sha1_to_hex(sha1
));
1573 url
= strbuf_detach(&buf
, NULL
);
1575 strbuf_addf(&buf
, "%s.temp", sha1_pack_index_name(sha1
));
1576 tmp
= strbuf_detach(&buf
, NULL
);
1578 if (http_get_file(url
, tmp
, NULL
) != HTTP_OK
) {
1579 error("Unable to get pack index %s", url
);
1588 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
1589 unsigned char *sha1
, const char *base_url
)
1591 struct packed_git
*new_pack
;
1592 char *tmp_idx
= NULL
;
1595 if (has_pack_index(sha1
)) {
1596 new_pack
= parse_pack_index(sha1
, sha1_pack_index_name(sha1
));
1598 return -1; /* parse_pack_index() already issued error message */
1602 tmp_idx
= fetch_pack_index(sha1
, base_url
);
1606 new_pack
= parse_pack_index(sha1
, tmp_idx
);
1611 return -1; /* parse_pack_index() already issued error message */
1614 ret
= verify_pack_index(new_pack
);
1616 close_pack_index(new_pack
);
1617 ret
= finalize_object_file(tmp_idx
, sha1_pack_index_name(sha1
));
1624 new_pack
->next
= *packs_head
;
1625 *packs_head
= new_pack
;
1629 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
1631 struct http_get_options options
= {0};
1634 struct strbuf buf
= STRBUF_INIT
;
1635 unsigned char sha1
[20];
1637 end_url_with_slash(&buf
, base_url
);
1638 strbuf_addstr(&buf
, "objects/info/packs");
1639 url
= strbuf_detach(&buf
, NULL
);
1641 options
.no_cache
= 1;
1642 ret
= http_get_strbuf(url
, &buf
, &options
);
1647 while (i
< buf
.len
) {
1651 if (i
+ 52 <= buf
.len
&&
1652 starts_with(data
+ i
, " pack-") &&
1653 starts_with(data
+ i
+ 46, ".pack\n")) {
1654 get_sha1_hex(data
+ i
+ 6, sha1
);
1655 fetch_and_setup_pack_index(packs_head
, sha1
,
1661 while (i
< buf
.len
&& data
[i
] != '\n')
1672 void release_http_pack_request(struct http_pack_request
*preq
)
1674 if (preq
->packfile
!= NULL
) {
1675 fclose(preq
->packfile
);
1676 preq
->packfile
= NULL
;
1683 int finish_http_pack_request(struct http_pack_request
*preq
)
1685 struct packed_git
**lst
;
1686 struct packed_git
*p
= preq
->target
;
1689 struct child_process ip
= CHILD_PROCESS_INIT
;
1690 const char *ip_argv
[8];
1692 close_pack_index(p
);
1694 fclose(preq
->packfile
);
1695 preq
->packfile
= NULL
;
1699 lst
= &((*lst
)->next
);
1700 *lst
= (*lst
)->next
;
1702 if (!strip_suffix(preq
->tmpfile
, ".pack.temp", &len
))
1703 die("BUG: pack tmpfile does not end in .pack.temp?");
1704 tmp_idx
= xstrfmt("%.*s.idx.temp", (int)len
, preq
->tmpfile
);
1706 ip_argv
[0] = "index-pack";
1708 ip_argv
[2] = tmp_idx
;
1709 ip_argv
[3] = preq
->tmpfile
;
1717 if (run_command(&ip
)) {
1718 unlink(preq
->tmpfile
);
1724 unlink(sha1_pack_index_name(p
->sha1
));
1726 if (finalize_object_file(preq
->tmpfile
, sha1_pack_name(p
->sha1
))
1727 || finalize_object_file(tmp_idx
, sha1_pack_index_name(p
->sha1
))) {
1732 install_packed_git(p
);
1737 struct http_pack_request
*new_http_pack_request(
1738 struct packed_git
*target
, const char *base_url
)
1740 off_t prev_posn
= 0;
1741 struct strbuf buf
= STRBUF_INIT
;
1742 struct http_pack_request
*preq
;
1744 preq
= xcalloc(1, sizeof(*preq
));
1745 preq
->target
= target
;
1747 end_url_with_slash(&buf
, base_url
);
1748 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1749 sha1_to_hex(target
->sha1
));
1750 preq
->url
= strbuf_detach(&buf
, NULL
);
1752 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp",
1753 sha1_pack_name(target
->sha1
));
1754 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1755 if (!preq
->packfile
) {
1756 error("Unable to open local file %s for pack",
1761 preq
->slot
= get_active_slot();
1762 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1763 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1764 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1765 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1769 * If there is data present from a previous transfer attempt,
1770 * resume where it left off
1772 prev_posn
= ftello(preq
->packfile
);
1774 if (http_is_verbose
)
1776 "Resuming fetch of pack %s at byte %"PRIuMAX
"\n",
1777 sha1_to_hex(target
->sha1
), (uintmax_t)prev_posn
);
1778 http_opt_request_remainder(preq
->slot
->curl
, prev_posn
);
1789 /* Helpers for fetching objects (loose) */
1790 static size_t fwrite_sha1_file(char *ptr
, size_t eltsize
, size_t nmemb
,
1793 unsigned char expn
[4096];
1794 size_t size
= eltsize
* nmemb
;
1796 struct http_object_request
*freq
=
1797 (struct http_object_request
*)data
;
1799 ssize_t retval
= xwrite(freq
->localfile
,
1800 (char *) ptr
+ posn
, size
- posn
);
1804 } while (posn
< size
);
1806 freq
->stream
.avail_in
= size
;
1807 freq
->stream
.next_in
= (void *)ptr
;
1809 freq
->stream
.next_out
= expn
;
1810 freq
->stream
.avail_out
= sizeof(expn
);
1811 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1812 git_SHA1_Update(&freq
->c
, expn
,
1813 sizeof(expn
) - freq
->stream
.avail_out
);
1814 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1818 struct http_object_request
*new_http_object_request(const char *base_url
,
1819 unsigned char *sha1
)
1821 char *hex
= sha1_to_hex(sha1
);
1822 const char *filename
;
1823 char prevfile
[PATH_MAX
];
1825 char prev_buf
[PREV_BUF_SIZE
];
1826 ssize_t prev_read
= 0;
1827 off_t prev_posn
= 0;
1828 struct http_object_request
*freq
;
1830 freq
= xcalloc(1, sizeof(*freq
));
1831 hashcpy(freq
->sha1
, sha1
);
1832 freq
->localfile
= -1;
1834 filename
= sha1_file_name(sha1
);
1835 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1836 "%s.temp", filename
);
1838 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1839 unlink_or_warn(prevfile
);
1840 rename(freq
->tmpfile
, prevfile
);
1841 unlink_or_warn(freq
->tmpfile
);
1843 if (freq
->localfile
!= -1)
1844 error("fd leakage in start: %d", freq
->localfile
);
1845 freq
->localfile
= open(freq
->tmpfile
,
1846 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1848 * This could have failed due to the "lazy directory creation";
1849 * try to mkdir the last path component.
1851 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1852 char *dir
= strrchr(freq
->tmpfile
, '/');
1855 mkdir(freq
->tmpfile
, 0777);
1858 freq
->localfile
= open(freq
->tmpfile
,
1859 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1862 if (freq
->localfile
< 0) {
1863 error("Couldn't create temporary file %s: %s",
1864 freq
->tmpfile
, strerror(errno
));
1868 git_inflate_init(&freq
->stream
);
1870 git_SHA1_Init(&freq
->c
);
1872 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1875 * If a previous temp file is present, process what was already
1878 prevlocal
= open(prevfile
, O_RDONLY
);
1879 if (prevlocal
!= -1) {
1881 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1883 if (fwrite_sha1_file(prev_buf
,
1886 freq
) == prev_read
) {
1887 prev_posn
+= prev_read
;
1892 } while (prev_read
> 0);
1895 unlink_or_warn(prevfile
);
1898 * Reset inflate/SHA1 if there was an error reading the previous temp
1899 * file; also rewind to the beginning of the local file.
1901 if (prev_read
== -1) {
1902 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1903 git_inflate_init(&freq
->stream
);
1904 git_SHA1_Init(&freq
->c
);
1907 lseek(freq
->localfile
, 0, SEEK_SET
);
1908 if (ftruncate(freq
->localfile
, 0) < 0) {
1909 error("Couldn't truncate temporary file %s: %s",
1910 freq
->tmpfile
, strerror(errno
));
1916 freq
->slot
= get_active_slot();
1918 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1919 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1920 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1921 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1922 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1925 * If we have successfully processed data from a previous fetch
1926 * attempt, only fetch the data we don't already have.
1929 if (http_is_verbose
)
1931 "Resuming fetch of object %s at byte %"PRIuMAX
"\n",
1932 hex
, (uintmax_t)prev_posn
);
1933 http_opt_request_remainder(freq
->slot
->curl
, prev_posn
);
1944 void process_http_object_request(struct http_object_request
*freq
)
1946 if (freq
->slot
== NULL
)
1948 freq
->curl_result
= freq
->slot
->curl_result
;
1949 freq
->http_code
= freq
->slot
->http_code
;
1953 int finish_http_object_request(struct http_object_request
*freq
)
1957 close(freq
->localfile
);
1958 freq
->localfile
= -1;
1960 process_http_object_request(freq
);
1962 if (freq
->http_code
== 416) {
1963 warning("requested range invalid; we may already have all the data.");
1964 } else if (freq
->curl_result
!= CURLE_OK
) {
1965 if (stat(freq
->tmpfile
, &st
) == 0)
1966 if (st
.st_size
== 0)
1967 unlink_or_warn(freq
->tmpfile
);
1971 git_inflate_end(&freq
->stream
);
1972 git_SHA1_Final(freq
->real_sha1
, &freq
->c
);
1973 if (freq
->zret
!= Z_STREAM_END
) {
1974 unlink_or_warn(freq
->tmpfile
);
1977 if (hashcmp(freq
->sha1
, freq
->real_sha1
)) {
1978 unlink_or_warn(freq
->tmpfile
);
1982 finalize_object_file(freq
->tmpfile
, sha1_file_name(freq
->sha1
));
1984 return freq
->rename
;
1987 void abort_http_object_request(struct http_object_request
*freq
)
1989 unlink_or_warn(freq
->tmpfile
);
1991 release_http_object_request(freq
);
1994 void release_http_object_request(struct http_object_request
*freq
)
1996 if (freq
->localfile
!= -1) {
1997 close(freq
->localfile
);
1998 freq
->localfile
= -1;
2000 if (freq
->url
!= NULL
) {
2004 if (freq
->slot
!= NULL
) {
2005 freq
->slot
->callback_func
= NULL
;
2006 freq
->slot
->callback_data
= NULL
;
2007 release_active_slot(freq
->slot
);