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_string(&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_errno("unable to set SO_KEEPALIVE on socket");
451 return 0; /* CURL_SOCKOPT_OK only exists since curl 7.21.5 */
454 static void set_curl_keepalive(CURL
*c
)
456 curl_easy_setopt(c
, CURLOPT_SOCKOPTFUNCTION
, sockopt_callback
);
460 static void set_curl_keepalive(CURL
*c
)
462 /* not supported on older curl versions */
466 static CURL
*get_curl_handle(void)
468 CURL
*result
= curl_easy_init();
469 long allowed_protocols
= 0;
472 die("curl_easy_init failed");
474 if (!curl_ssl_verify
) {
475 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 0);
476 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 0);
478 /* Verify authenticity of the peer's certificate */
479 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 1);
480 /* The name in the cert must match whom we tried to connect */
481 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 2);
484 #if LIBCURL_VERSION_NUM >= 0x070907
485 curl_easy_setopt(result
, CURLOPT_NETRC
, CURL_NETRC_OPTIONAL
);
487 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
488 curl_easy_setopt(result
, CURLOPT_HTTPAUTH
, CURLAUTH_ANY
);
491 if (http_proactive_auth
)
492 init_curl_http_auth(result
);
494 if (getenv("GIT_SSL_VERSION"))
495 ssl_version
= getenv("GIT_SSL_VERSION");
496 if (ssl_version
&& *ssl_version
) {
498 for (i
= 0; i
< ARRAY_SIZE(sslversions
); i
++) {
499 if (!strcmp(ssl_version
, sslversions
[i
].name
)) {
500 curl_easy_setopt(result
, CURLOPT_SSLVERSION
,
501 sslversions
[i
].ssl_version
);
505 if (i
== ARRAY_SIZE(sslversions
))
506 warning("unsupported ssl version %s: using default",
510 if (getenv("GIT_SSL_CIPHER_LIST"))
511 ssl_cipherlist
= getenv("GIT_SSL_CIPHER_LIST");
512 if (ssl_cipherlist
!= NULL
&& *ssl_cipherlist
)
513 curl_easy_setopt(result
, CURLOPT_SSL_CIPHER_LIST
,
516 if (ssl_cert
!= NULL
)
517 curl_easy_setopt(result
, CURLOPT_SSLCERT
, ssl_cert
);
518 if (has_cert_password())
519 curl_easy_setopt(result
, CURLOPT_KEYPASSWD
, cert_auth
.password
);
520 #if LIBCURL_VERSION_NUM >= 0x070903
522 curl_easy_setopt(result
, CURLOPT_SSLKEY
, ssl_key
);
524 #if LIBCURL_VERSION_NUM >= 0x070908
525 if (ssl_capath
!= NULL
)
526 curl_easy_setopt(result
, CURLOPT_CAPATH
, ssl_capath
);
528 #if LIBCURL_VERSION_NUM >= 0x072c00
529 if (ssl_pinnedkey
!= NULL
)
530 curl_easy_setopt(result
, CURLOPT_PINNEDPUBLICKEY
, ssl_pinnedkey
);
532 if (ssl_cainfo
!= NULL
)
533 curl_easy_setopt(result
, CURLOPT_CAINFO
, ssl_cainfo
);
535 if (curl_low_speed_limit
> 0 && curl_low_speed_time
> 0) {
536 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_LIMIT
,
537 curl_low_speed_limit
);
538 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_TIME
,
539 curl_low_speed_time
);
542 curl_easy_setopt(result
, CURLOPT_FOLLOWLOCATION
, 1);
543 curl_easy_setopt(result
, CURLOPT_MAXREDIRS
, 20);
544 #if LIBCURL_VERSION_NUM >= 0x071301
545 curl_easy_setopt(result
, CURLOPT_POSTREDIR
, CURL_REDIR_POST_ALL
);
546 #elif LIBCURL_VERSION_NUM >= 0x071101
547 curl_easy_setopt(result
, CURLOPT_POST301
, 1);
549 #if LIBCURL_VERSION_NUM >= 0x071304
550 if (is_transport_allowed("http"))
551 allowed_protocols
|= CURLPROTO_HTTP
;
552 if (is_transport_allowed("https"))
553 allowed_protocols
|= CURLPROTO_HTTPS
;
554 if (is_transport_allowed("ftp"))
555 allowed_protocols
|= CURLPROTO_FTP
;
556 if (is_transport_allowed("ftps"))
557 allowed_protocols
|= CURLPROTO_FTPS
;
558 curl_easy_setopt(result
, CURLOPT_REDIR_PROTOCOLS
, allowed_protocols
);
560 if (transport_restrict_protocols())
561 warning("protocol restrictions not applied to curl redirects because\n"
562 "your curl version is too old (>= 7.19.4)");
565 if (getenv("GIT_CURL_VERBOSE"))
566 curl_easy_setopt(result
, CURLOPT_VERBOSE
, 1);
568 curl_easy_setopt(result
, CURLOPT_USERAGENT
,
569 user_agent
? user_agent
: git_user_agent());
571 if (curl_ftp_no_epsv
)
572 curl_easy_setopt(result
, CURLOPT_FTP_USE_EPSV
, 0);
574 #ifdef CURLOPT_USE_SSL
576 curl_easy_setopt(result
, CURLOPT_USE_SSL
, CURLUSESSL_TRY
);
580 * CURL also examines these variables as a fallback; but we need to query
581 * them here in order to decide whether to prompt for missing password (cf.
582 * init_curl_proxy_auth()).
584 * Unlike many other common environment variables, these are historically
585 * lowercase only. It appears that CURL did not know this and implemented
586 * only uppercase variants, which was later corrected to take both - with
587 * the exception of http_proxy, which is lowercase only also in CURL. As
588 * the lowercase versions are the historical quasi-standard, they take
589 * precedence here, as in CURL.
591 if (!curl_http_proxy
) {
592 if (!strcmp(http_auth
.protocol
, "https")) {
593 var_override(&curl_http_proxy
, getenv("HTTPS_PROXY"));
594 var_override(&curl_http_proxy
, getenv("https_proxy"));
596 var_override(&curl_http_proxy
, getenv("http_proxy"));
598 if (!curl_http_proxy
) {
599 var_override(&curl_http_proxy
, getenv("ALL_PROXY"));
600 var_override(&curl_http_proxy
, getenv("all_proxy"));
604 if (curl_http_proxy
) {
605 curl_easy_setopt(result
, CURLOPT_PROXY
, curl_http_proxy
);
606 #if LIBCURL_VERSION_NUM >= 0x071800
607 if (starts_with(curl_http_proxy
, "socks5"))
608 curl_easy_setopt(result
,
609 CURLOPT_PROXYTYPE
, CURLPROXY_SOCKS5
);
610 else if (starts_with(curl_http_proxy
, "socks4a"))
611 curl_easy_setopt(result
,
612 CURLOPT_PROXYTYPE
, CURLPROXY_SOCKS4A
);
613 else if (starts_with(curl_http_proxy
, "socks"))
614 curl_easy_setopt(result
,
615 CURLOPT_PROXYTYPE
, CURLPROXY_SOCKS4
);
617 if (strstr(curl_http_proxy
, "://"))
618 credential_from_url(&proxy_auth
, curl_http_proxy
);
620 struct strbuf url
= STRBUF_INIT
;
621 strbuf_addf(&url
, "http://%s", curl_http_proxy
);
622 credential_from_url(&proxy_auth
, url
.buf
);
623 strbuf_release(&url
);
626 curl_easy_setopt(result
, CURLOPT_PROXY
, proxy_auth
.host
);
627 #if LIBCURL_VERSION_NUM >= 0x071304
628 var_override(&curl_no_proxy
, getenv("NO_PROXY"));
629 var_override(&curl_no_proxy
, getenv("no_proxy"));
630 curl_easy_setopt(result
, CURLOPT_NOPROXY
, curl_no_proxy
);
633 init_curl_proxy_auth(result
);
635 set_curl_keepalive(result
);
640 static void set_from_env(const char **var
, const char *envname
)
642 const char *val
= getenv(envname
);
647 void http_init(struct remote
*remote
, const char *url
, int proactive_auth
)
649 char *low_speed_limit
;
650 char *low_speed_time
;
651 char *normalized_url
;
652 struct urlmatch_config config
= { STRING_LIST_INIT_DUP
};
654 config
.section
= "http";
656 config
.collect_fn
= http_options
;
657 config
.cascade_fn
= git_default_config
;
661 normalized_url
= url_normalize(url
, &config
.url
);
663 git_config(urlmatch_config_entry
, &config
);
664 free(normalized_url
);
666 if (curl_global_init(CURL_GLOBAL_ALL
) != CURLE_OK
)
667 die("curl_global_init failed");
669 http_proactive_auth
= proactive_auth
;
671 if (remote
&& remote
->http_proxy
)
672 curl_http_proxy
= xstrdup(remote
->http_proxy
);
675 var_override(&http_proxy_authmethod
, remote
->http_proxy_authmethod
);
677 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
678 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
680 #ifdef USE_CURL_MULTI
682 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
683 if (http_max_requests
!= NULL
)
684 max_requests
= atoi(http_max_requests
);
687 curlm
= curl_multi_init();
689 die("curl_multi_init failed");
692 if (getenv("GIT_SSL_NO_VERIFY"))
695 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
696 #if LIBCURL_VERSION_NUM >= 0x070903
697 set_from_env(&ssl_key
, "GIT_SSL_KEY");
699 #if LIBCURL_VERSION_NUM >= 0x070908
700 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
702 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
704 set_from_env(&user_agent
, "GIT_HTTP_USER_AGENT");
706 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
707 if (low_speed_limit
!= NULL
)
708 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
709 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
710 if (low_speed_time
!= NULL
)
711 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
713 if (curl_ssl_verify
== -1)
716 curl_session_count
= 0;
717 #ifdef USE_CURL_MULTI
718 if (max_requests
< 1)
719 max_requests
= DEFAULT_MAX_REQUESTS
;
722 if (getenv("GIT_CURL_FTP_NO_EPSV"))
723 curl_ftp_no_epsv
= 1;
726 credential_from_url(&http_auth
, url
);
727 if (!ssl_cert_password_required
&&
728 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
729 starts_with(url
, "https://"))
730 ssl_cert_password_required
= 1;
733 #ifndef NO_CURL_EASY_DUPHANDLE
734 curl_default
= get_curl_handle();
738 void http_cleanup(void)
740 struct active_request_slot
*slot
= active_queue_head
;
742 while (slot
!= NULL
) {
743 struct active_request_slot
*next
= slot
->next
;
744 if (slot
->curl
!= NULL
) {
745 #ifdef USE_CURL_MULTI
746 curl_multi_remove_handle(curlm
, slot
->curl
);
748 curl_easy_cleanup(slot
->curl
);
753 active_queue_head
= NULL
;
755 #ifndef NO_CURL_EASY_DUPHANDLE
756 curl_easy_cleanup(curl_default
);
759 #ifdef USE_CURL_MULTI
760 curl_multi_cleanup(curlm
);
762 curl_global_cleanup();
764 curl_slist_free_all(pragma_header
);
765 pragma_header
= NULL
;
767 curl_slist_free_all(no_pragma_header
);
768 no_pragma_header
= NULL
;
770 if (curl_http_proxy
) {
771 free((void *)curl_http_proxy
);
772 curl_http_proxy
= NULL
;
775 if (proxy_auth
.password
) {
776 memset(proxy_auth
.password
, 0, strlen(proxy_auth
.password
));
777 free(proxy_auth
.password
);
778 proxy_auth
.password
= NULL
;
781 free((void *)curl_proxyuserpwd
);
782 curl_proxyuserpwd
= NULL
;
784 free((void *)http_proxy_authmethod
);
785 http_proxy_authmethod
= NULL
;
787 if (cert_auth
.password
!= NULL
) {
788 memset(cert_auth
.password
, 0, strlen(cert_auth
.password
));
789 free(cert_auth
.password
);
790 cert_auth
.password
= NULL
;
792 ssl_cert_password_required
= 0;
794 free(cached_accept_language
);
795 cached_accept_language
= NULL
;
798 struct active_request_slot
*get_active_slot(void)
800 struct active_request_slot
*slot
= active_queue_head
;
801 struct active_request_slot
*newslot
;
803 #ifdef USE_CURL_MULTI
806 /* Wait for a slot to open up if the queue is full */
807 while (active_requests
>= max_requests
) {
808 curl_multi_perform(curlm
, &num_transfers
);
809 if (num_transfers
< active_requests
)
810 process_curl_messages();
814 while (slot
!= NULL
&& slot
->in_use
)
818 newslot
= xmalloc(sizeof(*newslot
));
819 newslot
->curl
= NULL
;
821 newslot
->next
= NULL
;
823 slot
= active_queue_head
;
825 active_queue_head
= newslot
;
827 while (slot
->next
!= NULL
)
829 slot
->next
= newslot
;
834 if (slot
->curl
== NULL
) {
835 #ifdef NO_CURL_EASY_DUPHANDLE
836 slot
->curl
= get_curl_handle();
838 slot
->curl
= curl_easy_duphandle(curl_default
);
840 curl_session_count
++;
845 slot
->results
= NULL
;
846 slot
->finished
= NULL
;
847 slot
->callback_data
= NULL
;
848 slot
->callback_func
= NULL
;
849 curl_easy_setopt(slot
->curl
, CURLOPT_COOKIEFILE
, curl_cookie_file
);
850 if (curl_save_cookies
)
851 curl_easy_setopt(slot
->curl
, CURLOPT_COOKIEJAR
, curl_cookie_file
);
852 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
853 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
854 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
855 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
856 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
857 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, NULL
);
858 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
859 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
860 curl_easy_setopt(slot
->curl
, CURLOPT_FAILONERROR
, 1);
861 curl_easy_setopt(slot
->curl
, CURLOPT_RANGE
, NULL
);
863 #if LIBCURL_VERSION_NUM >= 0x070a08
864 curl_easy_setopt(slot
->curl
, CURLOPT_IPRESOLVE
, git_curl_ipresolve
);
866 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
867 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPAUTH
, http_auth_methods
);
869 if (http_auth
.password
|| curl_empty_auth
)
870 init_curl_http_auth(slot
->curl
);
875 int start_active_slot(struct active_request_slot
*slot
)
877 #ifdef USE_CURL_MULTI
878 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
881 if (curlm_result
!= CURLM_OK
&&
882 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
889 * We know there must be something to do, since we just added
892 curl_multi_perform(curlm
, &num_transfers
);
897 #ifdef USE_CURL_MULTI
901 struct fill_chain
*next
;
904 static struct fill_chain
*fill_cfg
;
906 void add_fill_function(void *data
, int (*fill
)(void *))
908 struct fill_chain
*new = xmalloc(sizeof(*new));
909 struct fill_chain
**linkp
= &fill_cfg
;
914 linkp
= &(*linkp
)->next
;
918 void fill_active_slots(void)
920 struct active_request_slot
*slot
= active_queue_head
;
922 while (active_requests
< max_requests
) {
923 struct fill_chain
*fill
;
924 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
925 if (fill
->fill(fill
->data
))
932 while (slot
!= NULL
) {
933 if (!slot
->in_use
&& slot
->curl
!= NULL
934 && curl_session_count
> min_curl_sessions
) {
935 curl_easy_cleanup(slot
->curl
);
937 curl_session_count
--;
943 void step_active_slots(void)
946 CURLMcode curlm_result
;
949 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
950 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
951 if (num_transfers
< active_requests
) {
952 process_curl_messages();
958 void run_active_slot(struct active_request_slot
*slot
)
960 #ifdef USE_CURL_MULTI
965 struct timeval select_timeout
;
968 slot
->finished
= &finished
;
973 #if LIBCURL_VERSION_NUM >= 0x070f04
975 curl_multi_timeout(curlm
, &curl_timeout
);
976 if (curl_timeout
== 0) {
978 } else if (curl_timeout
== -1) {
979 select_timeout
.tv_sec
= 0;
980 select_timeout
.tv_usec
= 50000;
982 select_timeout
.tv_sec
= curl_timeout
/ 1000;
983 select_timeout
.tv_usec
= (curl_timeout
% 1000) * 1000;
986 select_timeout
.tv_sec
= 0;
987 select_timeout
.tv_usec
= 50000;
994 curl_multi_fdset(curlm
, &readfds
, &writefds
, &excfds
, &max_fd
);
997 * It can happen that curl_multi_timeout returns a pathologically
998 * long timeout when curl_multi_fdset returns no file descriptors
999 * to read. See commit message for more details.
1002 (select_timeout
.tv_sec
> 0 ||
1003 select_timeout
.tv_usec
> 50000)) {
1004 select_timeout
.tv_sec
= 0;
1005 select_timeout
.tv_usec
= 50000;
1008 select(max_fd
+1, &readfds
, &writefds
, &excfds
, &select_timeout
);
1012 while (slot
->in_use
) {
1013 slot
->curl_result
= curl_easy_perform(slot
->curl
);
1014 finish_active_slot(slot
);
1019 static void release_active_slot(struct active_request_slot
*slot
)
1021 closedown_active_slot(slot
);
1022 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
1023 #ifdef USE_CURL_MULTI
1024 curl_multi_remove_handle(curlm
, slot
->curl
);
1026 curl_easy_cleanup(slot
->curl
);
1028 curl_session_count
--;
1030 #ifdef USE_CURL_MULTI
1031 fill_active_slots();
1035 void finish_all_active_slots(void)
1037 struct active_request_slot
*slot
= active_queue_head
;
1039 while (slot
!= NULL
)
1041 run_active_slot(slot
);
1042 slot
= active_queue_head
;
1048 /* Helpers for modifying and creating URLs */
1049 static inline int needs_quote(int ch
)
1051 if (((ch
>= 'A') && (ch
<= 'Z'))
1052 || ((ch
>= 'a') && (ch
<= 'z'))
1053 || ((ch
>= '0') && (ch
<= '9'))
1061 static char *quote_ref_url(const char *base
, const char *ref
)
1063 struct strbuf buf
= STRBUF_INIT
;
1067 end_url_with_slash(&buf
, base
);
1069 for (cp
= ref
; (ch
= *cp
) != 0; cp
++)
1070 if (needs_quote(ch
))
1071 strbuf_addf(&buf
, "%%%02x", ch
);
1073 strbuf_addch(&buf
, *cp
);
1075 return strbuf_detach(&buf
, NULL
);
1078 void append_remote_object_url(struct strbuf
*buf
, const char *url
,
1080 int only_two_digit_prefix
)
1082 end_url_with_slash(buf
, url
);
1084 strbuf_addf(buf
, "objects/%.*s/", 2, hex
);
1085 if (!only_two_digit_prefix
)
1086 strbuf_addf(buf
, "%s", hex
+2);
1089 char *get_remote_object_url(const char *url
, const char *hex
,
1090 int only_two_digit_prefix
)
1092 struct strbuf buf
= STRBUF_INIT
;
1093 append_remote_object_url(&buf
, url
, hex
, only_two_digit_prefix
);
1094 return strbuf_detach(&buf
, NULL
);
1097 static int handle_curl_result(struct slot_results
*results
)
1100 * If we see a failing http code with CURLE_OK, we have turned off
1101 * FAILONERROR (to keep the server's custom error response), and should
1102 * translate the code into failure here.
1104 if (results
->curl_result
== CURLE_OK
&&
1105 results
->http_code
>= 400) {
1106 results
->curl_result
= CURLE_HTTP_RETURNED_ERROR
;
1108 * Normally curl will already have put the "reason phrase"
1109 * from the server into curl_errorstr; unfortunately without
1110 * FAILONERROR it is lost, so we can give only the numeric
1113 snprintf(curl_errorstr
, sizeof(curl_errorstr
),
1114 "The requested URL returned error: %ld",
1115 results
->http_code
);
1118 if (results
->curl_result
== CURLE_OK
) {
1119 credential_approve(&http_auth
);
1120 if (proxy_auth
.password
)
1121 credential_approve(&proxy_auth
);
1123 } else if (missing_target(results
))
1124 return HTTP_MISSING_TARGET
;
1125 else if (results
->http_code
== 401) {
1126 if (http_auth
.username
&& http_auth
.password
) {
1127 credential_reject(&http_auth
);
1130 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
1131 http_auth_methods
&= ~CURLAUTH_GSSNEGOTIATE
;
1136 if (results
->http_connectcode
== 407)
1137 credential_reject(&proxy_auth
);
1138 #if LIBCURL_VERSION_NUM >= 0x070c00
1139 if (!curl_errorstr
[0])
1140 strlcpy(curl_errorstr
,
1141 curl_easy_strerror(results
->curl_result
),
1142 sizeof(curl_errorstr
));
1148 int run_one_slot(struct active_request_slot
*slot
,
1149 struct slot_results
*results
)
1151 slot
->results
= results
;
1152 if (!start_active_slot(slot
)) {
1153 snprintf(curl_errorstr
, sizeof(curl_errorstr
),
1154 "failed to start HTTP request");
1155 return HTTP_START_FAILED
;
1158 run_active_slot(slot
);
1159 return handle_curl_result(results
);
1162 static CURLcode
curlinfo_strbuf(CURL
*curl
, CURLINFO info
, struct strbuf
*buf
)
1168 ret
= curl_easy_getinfo(curl
, info
, &ptr
);
1170 strbuf_addstr(buf
, ptr
);
1175 * Check for and extract a content-type parameter. "raw"
1176 * should be positioned at the start of the potential
1177 * parameter, with any whitespace already removed.
1179 * "name" is the name of the parameter. The value is appended
1182 static int extract_param(const char *raw
, const char *name
,
1185 size_t len
= strlen(name
);
1187 if (strncasecmp(raw
, name
, len
))
1195 while (*raw
&& !isspace(*raw
) && *raw
!= ';')
1196 strbuf_addch(out
, *raw
++);
1201 * Extract a normalized version of the content type, with any
1202 * spaces suppressed, all letters lowercased, and no trailing ";"
1205 * Note that we will silently remove even invalid whitespace. For
1206 * example, "text / plain" is specifically forbidden by RFC 2616,
1207 * but "text/plain" is the only reasonable output, and this keeps
1210 * If the "charset" argument is not NULL, store the value of any
1211 * charset parameter there.
1214 * "TEXT/PLAIN; charset=utf-8" -> "text/plain", "utf-8"
1215 * "text / plain" -> "text/plain"
1217 static void extract_content_type(struct strbuf
*raw
, struct strbuf
*type
,
1218 struct strbuf
*charset
)
1223 strbuf_grow(type
, raw
->len
);
1224 for (p
= raw
->buf
; *p
; p
++) {
1231 strbuf_addch(type
, tolower(*p
));
1237 strbuf_reset(charset
);
1239 while (isspace(*p
) || *p
== ';')
1241 if (!extract_param(p
, "charset", charset
))
1243 while (*p
&& !isspace(*p
))
1247 if (!charset
->len
&& starts_with(type
->buf
, "text/"))
1248 strbuf_addstr(charset
, "ISO-8859-1");
1251 static void write_accept_language(struct strbuf
*buf
)
1254 * MAX_DECIMAL_PLACES must not be larger than 3. If it is larger than
1255 * that, q-value will be smaller than 0.001, the minimum q-value the
1256 * HTTP specification allows. See
1257 * http://tools.ietf.org/html/rfc7231#section-5.3.1 for q-value.
1259 const int MAX_DECIMAL_PLACES
= 3;
1260 const int MAX_LANGUAGE_TAGS
= 1000;
1261 const int MAX_ACCEPT_LANGUAGE_HEADER_SIZE
= 4000;
1262 char **language_tags
= NULL
;
1264 const char *s
= get_preferred_languages();
1266 struct strbuf tag
= STRBUF_INIT
;
1268 /* Don't add Accept-Language header if no language is preferred. */
1273 * Split the colon-separated string of preferred languages into
1274 * language_tags array.
1277 /* collect language tag */
1278 for (; *s
&& (isalnum(*s
) || *s
== '_'); s
++)
1279 strbuf_addch(&tag
, *s
== '_' ? '-' : *s
);
1281 /* skip .codeset, @modifier and any other unnecessary parts */
1282 while (*s
&& *s
!= ':')
1287 REALLOC_ARRAY(language_tags
, num_langs
);
1288 language_tags
[num_langs
- 1] = strbuf_detach(&tag
, NULL
);
1289 if (num_langs
>= MAX_LANGUAGE_TAGS
- 1) /* -1 for '*' */
1294 /* write Accept-Language header into buf */
1296 int last_buf_len
= 0;
1302 REALLOC_ARRAY(language_tags
, num_langs
+ 1);
1303 language_tags
[num_langs
++] = "*"; /* it's OK; this won't be freed */
1305 /* compute decimal_places */
1306 for (max_q
= 1, decimal_places
= 0;
1307 max_q
< num_langs
&& decimal_places
<= MAX_DECIMAL_PLACES
;
1308 decimal_places
++, max_q
*= 10)
1311 xsnprintf(q_format
, sizeof(q_format
), ";q=0.%%0%dd", decimal_places
);
1313 strbuf_addstr(buf
, "Accept-Language: ");
1315 for (i
= 0; i
< num_langs
; i
++) {
1317 strbuf_addstr(buf
, ", ");
1319 strbuf_addstr(buf
, language_tags
[i
]);
1322 strbuf_addf(buf
, q_format
, max_q
- i
);
1324 if (buf
->len
> MAX_ACCEPT_LANGUAGE_HEADER_SIZE
) {
1325 strbuf_remove(buf
, last_buf_len
, buf
->len
- last_buf_len
);
1329 last_buf_len
= buf
->len
;
1333 /* free language tags -- last one is a static '*' */
1334 for (i
= 0; i
< num_langs
- 1; i
++)
1335 free(language_tags
[i
]);
1336 free(language_tags
);
1340 * Get an Accept-Language header which indicates user's preferred languages.
1344 * LANGUAGE=ko:en -> "Accept-Language: ko, en; q=0.9, *; q=0.1"
1345 * LANGUAGE=ko_KR.UTF-8:sr@latin -> "Accept-Language: ko-KR, sr; q=0.9, *; q=0.1"
1346 * LANGUAGE=ko LANG=en_US.UTF-8 -> "Accept-Language: ko, *; q=0.1"
1347 * LANGUAGE= LANG=en_US.UTF-8 -> "Accept-Language: en-US, *; q=0.1"
1348 * LANGUAGE= LANG=C -> ""
1350 static const char *get_accept_language(void)
1352 if (!cached_accept_language
) {
1353 struct strbuf buf
= STRBUF_INIT
;
1354 write_accept_language(&buf
);
1356 cached_accept_language
= strbuf_detach(&buf
, NULL
);
1359 return cached_accept_language
;
1362 static void http_opt_request_remainder(CURL
*curl
, off_t pos
)
1365 xsnprintf(buf
, sizeof(buf
), "%"PRIuMAX
"-", (uintmax_t)pos
);
1366 curl_easy_setopt(curl
, CURLOPT_RANGE
, buf
);
1369 /* http_request() targets */
1370 #define HTTP_REQUEST_STRBUF 0
1371 #define HTTP_REQUEST_FILE 1
1373 static int http_request(const char *url
,
1374 void *result
, int target
,
1375 const struct http_get_options
*options
)
1377 struct active_request_slot
*slot
;
1378 struct slot_results results
;
1379 struct curl_slist
*headers
= NULL
;
1380 struct strbuf buf
= STRBUF_INIT
;
1381 const char *accept_language
;
1384 slot
= get_active_slot();
1385 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
1387 if (result
== NULL
) {
1388 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 1);
1390 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
1391 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, result
);
1393 if (target
== HTTP_REQUEST_FILE
) {
1394 off_t posn
= ftello(result
);
1395 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
1398 http_opt_request_remainder(slot
->curl
, posn
);
1400 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
1404 accept_language
= get_accept_language();
1406 if (accept_language
)
1407 headers
= curl_slist_append(headers
, accept_language
);
1409 strbuf_addstr(&buf
, "Pragma:");
1410 if (options
&& options
->no_cache
)
1411 strbuf_addstr(&buf
, " no-cache");
1412 if (options
&& options
->keep_error
)
1413 curl_easy_setopt(slot
->curl
, CURLOPT_FAILONERROR
, 0);
1415 headers
= curl_slist_append(headers
, buf
.buf
);
1417 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, url
);
1418 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
1419 curl_easy_setopt(slot
->curl
, CURLOPT_ENCODING
, "gzip");
1421 ret
= run_one_slot(slot
, &results
);
1423 if (options
&& options
->content_type
) {
1424 struct strbuf raw
= STRBUF_INIT
;
1425 curlinfo_strbuf(slot
->curl
, CURLINFO_CONTENT_TYPE
, &raw
);
1426 extract_content_type(&raw
, options
->content_type
,
1428 strbuf_release(&raw
);
1431 if (options
&& options
->effective_url
)
1432 curlinfo_strbuf(slot
->curl
, CURLINFO_EFFECTIVE_URL
,
1433 options
->effective_url
);
1435 curl_slist_free_all(headers
);
1436 strbuf_release(&buf
);
1442 * Update the "base" url to a more appropriate value, as deduced by
1443 * redirects seen when requesting a URL starting with "url".
1445 * The "asked" parameter is a URL that we asked curl to access, and must begin
1448 * The "got" parameter is the URL that curl reported to us as where we ended
1451 * Returns 1 if we updated the base url, 0 otherwise.
1453 * Our basic strategy is to compare "base" and "asked" to find the bits
1454 * specific to our request. We then strip those bits off of "got" to yield the
1455 * new base. So for example, if our base is "http://example.com/foo.git",
1456 * and we ask for "http://example.com/foo.git/info/refs", we might end up
1457 * with "https://other.example.com/foo.git/info/refs". We would want the
1458 * new URL to become "https://other.example.com/foo.git".
1460 * Note that this assumes a sane redirect scheme. It's entirely possible
1461 * in the example above to end up at a URL that does not even end in
1462 * "info/refs". In such a case we simply punt, as there is not much we can
1463 * do (and such a scheme is unlikely to represent a real git repository,
1464 * which means we are likely about to abort anyway).
1466 static int update_url_from_redirect(struct strbuf
*base
,
1468 const struct strbuf
*got
)
1473 if (!strcmp(asked
, got
->buf
))
1476 if (!skip_prefix(asked
, base
->buf
, &tail
))
1477 die("BUG: update_url_from_redirect: %s is not a superset of %s",
1480 tail_len
= strlen(tail
);
1482 if (got
->len
< tail_len
||
1483 strcmp(tail
, got
->buf
+ got
->len
- tail_len
))
1484 return 0; /* insane redirect scheme */
1487 strbuf_add(base
, got
->buf
, got
->len
- tail_len
);
1491 static int http_request_reauth(const char *url
,
1492 void *result
, int target
,
1493 struct http_get_options
*options
)
1495 int ret
= http_request(url
, result
, target
, options
);
1497 if (options
&& options
->effective_url
&& options
->base_url
) {
1498 if (update_url_from_redirect(options
->base_url
,
1499 url
, options
->effective_url
)) {
1500 credential_from_url(&http_auth
, options
->base_url
->buf
);
1501 url
= options
->effective_url
->buf
;
1505 if (ret
!= HTTP_REAUTH
)
1509 * If we are using KEEP_ERROR, the previous request may have
1510 * put cruft into our output stream; we should clear it out before
1511 * making our next request. We only know how to do this for
1512 * the strbuf case, but that is enough to satisfy current callers.
1514 if (options
&& options
->keep_error
) {
1516 case HTTP_REQUEST_STRBUF
:
1517 strbuf_reset(result
);
1520 die("BUG: HTTP_KEEP_ERROR is only supported with strbufs");
1524 credential_fill(&http_auth
);
1526 return http_request(url
, result
, target
, options
);
1529 int http_get_strbuf(const char *url
,
1530 struct strbuf
*result
,
1531 struct http_get_options
*options
)
1533 return http_request_reauth(url
, result
, HTTP_REQUEST_STRBUF
, options
);
1537 * Downloads a URL and stores the result in the given file.
1539 * If a previous interrupted download is detected (i.e. a previous temporary
1540 * file is still around) the download is resumed.
1542 static int http_get_file(const char *url
, const char *filename
,
1543 struct http_get_options
*options
)
1546 struct strbuf tmpfile
= STRBUF_INIT
;
1549 strbuf_addf(&tmpfile
, "%s.temp", filename
);
1550 result
= fopen(tmpfile
.buf
, "a");
1552 error("Unable to open local file %s", tmpfile
.buf
);
1557 ret
= http_request_reauth(url
, result
, HTTP_REQUEST_FILE
, options
);
1560 if (ret
== HTTP_OK
&& finalize_object_file(tmpfile
.buf
, filename
))
1563 strbuf_release(&tmpfile
);
1567 int http_fetch_ref(const char *base
, struct ref
*ref
)
1569 struct http_get_options options
= {0};
1571 struct strbuf buffer
= STRBUF_INIT
;
1574 options
.no_cache
= 1;
1576 url
= quote_ref_url(base
, ref
->name
);
1577 if (http_get_strbuf(url
, &buffer
, &options
) == HTTP_OK
) {
1578 strbuf_rtrim(&buffer
);
1579 if (buffer
.len
== 40)
1580 ret
= get_oid_hex(buffer
.buf
, &ref
->old_oid
);
1581 else if (starts_with(buffer
.buf
, "ref: ")) {
1582 ref
->symref
= xstrdup(buffer
.buf
+ 5);
1587 strbuf_release(&buffer
);
1592 /* Helpers for fetching packs */
1593 static char *fetch_pack_index(unsigned char *sha1
, const char *base_url
)
1596 struct strbuf buf
= STRBUF_INIT
;
1598 if (http_is_verbose
)
1599 fprintf(stderr
, "Getting index for pack %s\n", sha1_to_hex(sha1
));
1601 end_url_with_slash(&buf
, base_url
);
1602 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", sha1_to_hex(sha1
));
1603 url
= strbuf_detach(&buf
, NULL
);
1605 strbuf_addf(&buf
, "%s.temp", sha1_pack_index_name(sha1
));
1606 tmp
= strbuf_detach(&buf
, NULL
);
1608 if (http_get_file(url
, tmp
, NULL
) != HTTP_OK
) {
1609 error("Unable to get pack index %s", url
);
1618 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
1619 unsigned char *sha1
, const char *base_url
)
1621 struct packed_git
*new_pack
;
1622 char *tmp_idx
= NULL
;
1625 if (has_pack_index(sha1
)) {
1626 new_pack
= parse_pack_index(sha1
, sha1_pack_index_name(sha1
));
1628 return -1; /* parse_pack_index() already issued error message */
1632 tmp_idx
= fetch_pack_index(sha1
, base_url
);
1636 new_pack
= parse_pack_index(sha1
, tmp_idx
);
1641 return -1; /* parse_pack_index() already issued error message */
1644 ret
= verify_pack_index(new_pack
);
1646 close_pack_index(new_pack
);
1647 ret
= finalize_object_file(tmp_idx
, sha1_pack_index_name(sha1
));
1654 new_pack
->next
= *packs_head
;
1655 *packs_head
= new_pack
;
1659 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
1661 struct http_get_options options
= {0};
1664 struct strbuf buf
= STRBUF_INIT
;
1665 unsigned char sha1
[20];
1667 end_url_with_slash(&buf
, base_url
);
1668 strbuf_addstr(&buf
, "objects/info/packs");
1669 url
= strbuf_detach(&buf
, NULL
);
1671 options
.no_cache
= 1;
1672 ret
= http_get_strbuf(url
, &buf
, &options
);
1677 while (i
< buf
.len
) {
1681 if (i
+ 52 <= buf
.len
&&
1682 starts_with(data
+ i
, " pack-") &&
1683 starts_with(data
+ i
+ 46, ".pack\n")) {
1684 get_sha1_hex(data
+ i
+ 6, sha1
);
1685 fetch_and_setup_pack_index(packs_head
, sha1
,
1691 while (i
< buf
.len
&& data
[i
] != '\n')
1702 void release_http_pack_request(struct http_pack_request
*preq
)
1704 if (preq
->packfile
!= NULL
) {
1705 fclose(preq
->packfile
);
1706 preq
->packfile
= NULL
;
1713 int finish_http_pack_request(struct http_pack_request
*preq
)
1715 struct packed_git
**lst
;
1716 struct packed_git
*p
= preq
->target
;
1719 struct child_process ip
= CHILD_PROCESS_INIT
;
1720 const char *ip_argv
[8];
1722 close_pack_index(p
);
1724 fclose(preq
->packfile
);
1725 preq
->packfile
= NULL
;
1729 lst
= &((*lst
)->next
);
1730 *lst
= (*lst
)->next
;
1732 if (!strip_suffix(preq
->tmpfile
, ".pack.temp", &len
))
1733 die("BUG: pack tmpfile does not end in .pack.temp?");
1734 tmp_idx
= xstrfmt("%.*s.idx.temp", (int)len
, preq
->tmpfile
);
1736 ip_argv
[0] = "index-pack";
1738 ip_argv
[2] = tmp_idx
;
1739 ip_argv
[3] = preq
->tmpfile
;
1747 if (run_command(&ip
)) {
1748 unlink(preq
->tmpfile
);
1754 unlink(sha1_pack_index_name(p
->sha1
));
1756 if (finalize_object_file(preq
->tmpfile
, sha1_pack_name(p
->sha1
))
1757 || finalize_object_file(tmp_idx
, sha1_pack_index_name(p
->sha1
))) {
1762 install_packed_git(p
);
1767 struct http_pack_request
*new_http_pack_request(
1768 struct packed_git
*target
, const char *base_url
)
1770 off_t prev_posn
= 0;
1771 struct strbuf buf
= STRBUF_INIT
;
1772 struct http_pack_request
*preq
;
1774 preq
= xcalloc(1, sizeof(*preq
));
1775 preq
->target
= target
;
1777 end_url_with_slash(&buf
, base_url
);
1778 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1779 sha1_to_hex(target
->sha1
));
1780 preq
->url
= strbuf_detach(&buf
, NULL
);
1782 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp",
1783 sha1_pack_name(target
->sha1
));
1784 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1785 if (!preq
->packfile
) {
1786 error("Unable to open local file %s for pack",
1791 preq
->slot
= get_active_slot();
1792 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1793 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1794 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1795 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1799 * If there is data present from a previous transfer attempt,
1800 * resume where it left off
1802 prev_posn
= ftello(preq
->packfile
);
1804 if (http_is_verbose
)
1806 "Resuming fetch of pack %s at byte %"PRIuMAX
"\n",
1807 sha1_to_hex(target
->sha1
), (uintmax_t)prev_posn
);
1808 http_opt_request_remainder(preq
->slot
->curl
, prev_posn
);
1819 /* Helpers for fetching objects (loose) */
1820 static size_t fwrite_sha1_file(char *ptr
, size_t eltsize
, size_t nmemb
,
1823 unsigned char expn
[4096];
1824 size_t size
= eltsize
* nmemb
;
1826 struct http_object_request
*freq
=
1827 (struct http_object_request
*)data
;
1829 ssize_t retval
= xwrite(freq
->localfile
,
1830 (char *) ptr
+ posn
, size
- posn
);
1834 } while (posn
< size
);
1836 freq
->stream
.avail_in
= size
;
1837 freq
->stream
.next_in
= (void *)ptr
;
1839 freq
->stream
.next_out
= expn
;
1840 freq
->stream
.avail_out
= sizeof(expn
);
1841 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1842 git_SHA1_Update(&freq
->c
, expn
,
1843 sizeof(expn
) - freq
->stream
.avail_out
);
1844 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1848 struct http_object_request
*new_http_object_request(const char *base_url
,
1849 unsigned char *sha1
)
1851 char *hex
= sha1_to_hex(sha1
);
1852 const char *filename
;
1853 char prevfile
[PATH_MAX
];
1855 char prev_buf
[PREV_BUF_SIZE
];
1856 ssize_t prev_read
= 0;
1857 off_t prev_posn
= 0;
1858 struct http_object_request
*freq
;
1860 freq
= xcalloc(1, sizeof(*freq
));
1861 hashcpy(freq
->sha1
, sha1
);
1862 freq
->localfile
= -1;
1864 filename
= sha1_file_name(sha1
);
1865 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1866 "%s.temp", filename
);
1868 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1869 unlink_or_warn(prevfile
);
1870 rename(freq
->tmpfile
, prevfile
);
1871 unlink_or_warn(freq
->tmpfile
);
1873 if (freq
->localfile
!= -1)
1874 error("fd leakage in start: %d", freq
->localfile
);
1875 freq
->localfile
= open(freq
->tmpfile
,
1876 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1878 * This could have failed due to the "lazy directory creation";
1879 * try to mkdir the last path component.
1881 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1882 char *dir
= strrchr(freq
->tmpfile
, '/');
1885 mkdir(freq
->tmpfile
, 0777);
1888 freq
->localfile
= open(freq
->tmpfile
,
1889 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1892 if (freq
->localfile
< 0) {
1893 error_errno("Couldn't create temporary file %s", freq
->tmpfile
);
1897 git_inflate_init(&freq
->stream
);
1899 git_SHA1_Init(&freq
->c
);
1901 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1904 * If a previous temp file is present, process what was already
1907 prevlocal
= open(prevfile
, O_RDONLY
);
1908 if (prevlocal
!= -1) {
1910 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1912 if (fwrite_sha1_file(prev_buf
,
1915 freq
) == prev_read
) {
1916 prev_posn
+= prev_read
;
1921 } while (prev_read
> 0);
1924 unlink_or_warn(prevfile
);
1927 * Reset inflate/SHA1 if there was an error reading the previous temp
1928 * file; also rewind to the beginning of the local file.
1930 if (prev_read
== -1) {
1931 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1932 git_inflate_init(&freq
->stream
);
1933 git_SHA1_Init(&freq
->c
);
1936 lseek(freq
->localfile
, 0, SEEK_SET
);
1937 if (ftruncate(freq
->localfile
, 0) < 0) {
1938 error_errno("Couldn't truncate temporary file %s",
1945 freq
->slot
= get_active_slot();
1947 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1948 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1949 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1950 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1951 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1954 * If we have successfully processed data from a previous fetch
1955 * attempt, only fetch the data we don't already have.
1958 if (http_is_verbose
)
1960 "Resuming fetch of object %s at byte %"PRIuMAX
"\n",
1961 hex
, (uintmax_t)prev_posn
);
1962 http_opt_request_remainder(freq
->slot
->curl
, prev_posn
);
1973 void process_http_object_request(struct http_object_request
*freq
)
1975 if (freq
->slot
== NULL
)
1977 freq
->curl_result
= freq
->slot
->curl_result
;
1978 freq
->http_code
= freq
->slot
->http_code
;
1982 int finish_http_object_request(struct http_object_request
*freq
)
1986 close(freq
->localfile
);
1987 freq
->localfile
= -1;
1989 process_http_object_request(freq
);
1991 if (freq
->http_code
== 416) {
1992 warning("requested range invalid; we may already have all the data.");
1993 } else if (freq
->curl_result
!= CURLE_OK
) {
1994 if (stat(freq
->tmpfile
, &st
) == 0)
1995 if (st
.st_size
== 0)
1996 unlink_or_warn(freq
->tmpfile
);
2000 git_inflate_end(&freq
->stream
);
2001 git_SHA1_Final(freq
->real_sha1
, &freq
->c
);
2002 if (freq
->zret
!= Z_STREAM_END
) {
2003 unlink_or_warn(freq
->tmpfile
);
2006 if (hashcmp(freq
->sha1
, freq
->real_sha1
)) {
2007 unlink_or_warn(freq
->tmpfile
);
2011 finalize_object_file(freq
->tmpfile
, sha1_file_name(freq
->sha1
));
2013 return freq
->rename
;
2016 void abort_http_object_request(struct http_object_request
*freq
)
2018 unlink_or_warn(freq
->tmpfile
);
2020 release_http_object_request(freq
);
2023 void release_http_object_request(struct http_object_request
*freq
)
2025 if (freq
->localfile
!= -1) {
2026 close(freq
->localfile
);
2027 freq
->localfile
= -1;
2029 if (freq
->url
!= NULL
) {
2033 if (freq
->slot
!= NULL
) {
2034 freq
->slot
->callback_func
= NULL
;
2035 freq
->slot
->callback_data
= NULL
;
2036 release_active_slot(freq
->slot
);