4 #include "run-command.h"
7 #include "credential.h"
13 size_t http_post_buffer
= 16 * LARGE_PACKET_MAX
;
15 #if LIBCURL_VERSION_NUM >= 0x070a06
16 #define LIBCURL_CAN_HANDLE_AUTH_ANY
19 static int min_curl_sessions
= 1;
20 static int curl_session_count
;
22 static int max_requests
= -1;
25 #ifndef NO_CURL_EASY_DUPHANDLE
26 static CURL
*curl_default
;
29 #define PREV_BUF_SIZE 4096
30 #define RANGE_HEADER_SIZE 30
32 char curl_errorstr
[CURL_ERROR_SIZE
];
34 static int curl_ssl_verify
= -1;
35 static int curl_ssl_try
;
36 static const char *ssl_cert
;
37 #if LIBCURL_VERSION_NUM >= 0x070903
38 static const char *ssl_key
;
40 #if LIBCURL_VERSION_NUM >= 0x070908
41 static const char *ssl_capath
;
43 static const char *ssl_cainfo
;
44 static long curl_low_speed_limit
= -1;
45 static long curl_low_speed_time
= -1;
46 static int curl_ftp_no_epsv
;
47 static const char *curl_http_proxy
;
48 static const char *curl_cookie_file
;
49 static struct credential http_auth
= CREDENTIAL_INIT
;
50 static int http_proactive_auth
;
51 static const char *user_agent
;
53 #if LIBCURL_VERSION_NUM >= 0x071700
54 /* Use CURLOPT_KEYPASSWD as is */
55 #elif LIBCURL_VERSION_NUM >= 0x070903
56 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
58 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
61 static struct credential cert_auth
= CREDENTIAL_INIT
;
62 static int ssl_cert_password_required
;
64 static struct curl_slist
*pragma_header
;
65 static struct curl_slist
*no_pragma_header
;
67 static struct active_request_slot
*active_queue_head
;
69 size_t fread_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
71 size_t size
= eltsize
* nmemb
;
72 struct buffer
*buffer
= buffer_
;
74 if (size
> buffer
->buf
.len
- buffer
->posn
)
75 size
= buffer
->buf
.len
- buffer
->posn
;
76 memcpy(ptr
, buffer
->buf
.buf
+ buffer
->posn
, size
);
83 curlioerr
ioctl_buffer(CURL
*handle
, int cmd
, void *clientp
)
85 struct buffer
*buffer
= clientp
;
91 case CURLIOCMD_RESTARTREAD
:
96 return CURLIOE_UNKNOWNCMD
;
101 size_t fwrite_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
103 size_t size
= eltsize
* nmemb
;
104 struct strbuf
*buffer
= buffer_
;
106 strbuf_add(buffer
, ptr
, size
);
110 size_t fwrite_null(char *ptr
, size_t eltsize
, size_t nmemb
, void *strbuf
)
112 return eltsize
* nmemb
;
115 #ifdef USE_CURL_MULTI
116 static void process_curl_messages(void)
119 struct active_request_slot
*slot
;
120 CURLMsg
*curl_message
= curl_multi_info_read(curlm
, &num_messages
);
122 while (curl_message
!= NULL
) {
123 if (curl_message
->msg
== CURLMSG_DONE
) {
124 int curl_result
= curl_message
->data
.result
;
125 slot
= active_queue_head
;
126 while (slot
!= NULL
&&
127 slot
->curl
!= curl_message
->easy_handle
)
130 curl_multi_remove_handle(curlm
, slot
->curl
);
131 slot
->curl_result
= curl_result
;
132 finish_active_slot(slot
);
134 fprintf(stderr
, "Received DONE message for unknown request!\n");
137 fprintf(stderr
, "Unknown CURL message received: %d\n",
138 (int)curl_message
->msg
);
140 curl_message
= curl_multi_info_read(curlm
, &num_messages
);
145 static int http_options(const char *var
, const char *value
, void *cb
)
147 if (!strcmp("http.sslverify", var
)) {
148 curl_ssl_verify
= git_config_bool(var
, value
);
151 if (!strcmp("http.sslcert", var
))
152 return git_config_string(&ssl_cert
, var
, value
);
153 #if LIBCURL_VERSION_NUM >= 0x070903
154 if (!strcmp("http.sslkey", var
))
155 return git_config_string(&ssl_key
, var
, value
);
157 #if LIBCURL_VERSION_NUM >= 0x070908
158 if (!strcmp("http.sslcapath", var
))
159 return git_config_string(&ssl_capath
, var
, value
);
161 if (!strcmp("http.sslcainfo", var
))
162 return git_config_string(&ssl_cainfo
, var
, value
);
163 if (!strcmp("http.sslcertpasswordprotected", var
)) {
164 ssl_cert_password_required
= git_config_bool(var
, value
);
167 if (!strcmp("http.ssltry", var
)) {
168 curl_ssl_try
= git_config_bool(var
, value
);
171 if (!strcmp("http.minsessions", var
)) {
172 min_curl_sessions
= git_config_int(var
, value
);
173 #ifndef USE_CURL_MULTI
174 if (min_curl_sessions
> 1)
175 min_curl_sessions
= 1;
179 #ifdef USE_CURL_MULTI
180 if (!strcmp("http.maxrequests", var
)) {
181 max_requests
= git_config_int(var
, value
);
185 if (!strcmp("http.lowspeedlimit", var
)) {
186 curl_low_speed_limit
= (long)git_config_int(var
, value
);
189 if (!strcmp("http.lowspeedtime", var
)) {
190 curl_low_speed_time
= (long)git_config_int(var
, value
);
194 if (!strcmp("http.noepsv", var
)) {
195 curl_ftp_no_epsv
= git_config_bool(var
, value
);
198 if (!strcmp("http.proxy", var
))
199 return git_config_string(&curl_http_proxy
, var
, value
);
201 if (!strcmp("http.cookiefile", var
))
202 return git_config_string(&curl_cookie_file
, var
, value
);
204 if (!strcmp("http.postbuffer", var
)) {
205 http_post_buffer
= git_config_int(var
, value
);
206 if (http_post_buffer
< LARGE_PACKET_MAX
)
207 http_post_buffer
= LARGE_PACKET_MAX
;
211 if (!strcmp("http.useragent", var
))
212 return git_config_string(&user_agent
, var
, value
);
214 /* Fall back on the default ones */
215 return git_default_config(var
, value
, cb
);
218 static void init_curl_http_auth(CURL
*result
)
220 if (!http_auth
.username
)
223 credential_fill(&http_auth
);
225 #if LIBCURL_VERSION_NUM >= 0x071301
226 curl_easy_setopt(result
, CURLOPT_USERNAME
, http_auth
.username
);
227 curl_easy_setopt(result
, CURLOPT_PASSWORD
, http_auth
.password
);
230 static struct strbuf up
= STRBUF_INIT
;
232 strbuf_addf(&up
, "%s:%s",
233 http_auth
.username
, http_auth
.password
);
234 curl_easy_setopt(result
, CURLOPT_USERPWD
, up
.buf
);
239 static int has_cert_password(void)
241 if (ssl_cert
== NULL
|| ssl_cert_password_required
!= 1)
243 if (!cert_auth
.password
) {
244 cert_auth
.protocol
= xstrdup("cert");
245 cert_auth
.username
= xstrdup("");
246 cert_auth
.path
= xstrdup(ssl_cert
);
247 credential_fill(&cert_auth
);
252 static CURL
*get_curl_handle(void)
254 CURL
*result
= curl_easy_init();
256 if (!curl_ssl_verify
) {
257 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 0);
258 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 0);
260 /* Verify authenticity of the peer's certificate */
261 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 1);
262 /* The name in the cert must match whom we tried to connect */
263 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 2);
266 #if LIBCURL_VERSION_NUM >= 0x070907
267 curl_easy_setopt(result
, CURLOPT_NETRC
, CURL_NETRC_OPTIONAL
);
269 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
270 curl_easy_setopt(result
, CURLOPT_HTTPAUTH
, CURLAUTH_ANY
);
273 if (http_proactive_auth
)
274 init_curl_http_auth(result
);
276 if (ssl_cert
!= NULL
)
277 curl_easy_setopt(result
, CURLOPT_SSLCERT
, ssl_cert
);
278 if (has_cert_password())
279 curl_easy_setopt(result
, CURLOPT_KEYPASSWD
, cert_auth
.password
);
280 #if LIBCURL_VERSION_NUM >= 0x070903
282 curl_easy_setopt(result
, CURLOPT_SSLKEY
, ssl_key
);
284 #if LIBCURL_VERSION_NUM >= 0x070908
285 if (ssl_capath
!= NULL
)
286 curl_easy_setopt(result
, CURLOPT_CAPATH
, ssl_capath
);
288 if (ssl_cainfo
!= NULL
)
289 curl_easy_setopt(result
, CURLOPT_CAINFO
, ssl_cainfo
);
291 if (curl_low_speed_limit
> 0 && curl_low_speed_time
> 0) {
292 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_LIMIT
,
293 curl_low_speed_limit
);
294 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_TIME
,
295 curl_low_speed_time
);
298 curl_easy_setopt(result
, CURLOPT_FOLLOWLOCATION
, 1);
299 #if LIBCURL_VERSION_NUM >= 0x071301
300 curl_easy_setopt(result
, CURLOPT_POSTREDIR
, CURL_REDIR_POST_ALL
);
301 #elif LIBCURL_VERSION_NUM >= 0x071101
302 curl_easy_setopt(result
, CURLOPT_POST301
, 1);
305 if (getenv("GIT_CURL_VERBOSE"))
306 curl_easy_setopt(result
, CURLOPT_VERBOSE
, 1);
308 curl_easy_setopt(result
, CURLOPT_USERAGENT
,
309 user_agent
? user_agent
: git_user_agent());
311 if (curl_ftp_no_epsv
)
312 curl_easy_setopt(result
, CURLOPT_FTP_USE_EPSV
, 0);
314 #ifdef CURLOPT_USE_SSL
316 curl_easy_setopt(result
, CURLOPT_USE_SSL
, CURLUSESSL_TRY
);
319 if (curl_http_proxy
) {
320 curl_easy_setopt(result
, CURLOPT_PROXY
, curl_http_proxy
);
321 curl_easy_setopt(result
, CURLOPT_PROXYAUTH
, CURLAUTH_ANY
);
327 static void set_from_env(const char **var
, const char *envname
)
329 const char *val
= getenv(envname
);
334 void http_init(struct remote
*remote
, const char *url
, int proactive_auth
)
336 char *low_speed_limit
;
337 char *low_speed_time
;
338 char *normalized_url
;
339 struct urlmatch_config config
= { STRING_LIST_INIT_DUP
};
341 config
.section
= "http";
343 config
.collect_fn
= http_options
;
344 config
.cascade_fn
= git_default_config
;
348 normalized_url
= url_normalize(url
, &config
.url
);
350 git_config(urlmatch_config_entry
, &config
);
351 free(normalized_url
);
353 curl_global_init(CURL_GLOBAL_ALL
);
355 http_proactive_auth
= proactive_auth
;
357 if (remote
&& remote
->http_proxy
)
358 curl_http_proxy
= xstrdup(remote
->http_proxy
);
360 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
361 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
363 #ifdef USE_CURL_MULTI
365 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
366 if (http_max_requests
!= NULL
)
367 max_requests
= atoi(http_max_requests
);
370 curlm
= curl_multi_init();
372 fprintf(stderr
, "Error creating curl multi handle.\n");
377 if (getenv("GIT_SSL_NO_VERIFY"))
380 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
381 #if LIBCURL_VERSION_NUM >= 0x070903
382 set_from_env(&ssl_key
, "GIT_SSL_KEY");
384 #if LIBCURL_VERSION_NUM >= 0x070908
385 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
387 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
389 set_from_env(&user_agent
, "GIT_HTTP_USER_AGENT");
391 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
392 if (low_speed_limit
!= NULL
)
393 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
394 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
395 if (low_speed_time
!= NULL
)
396 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
398 if (curl_ssl_verify
== -1)
401 curl_session_count
= 0;
402 #ifdef USE_CURL_MULTI
403 if (max_requests
< 1)
404 max_requests
= DEFAULT_MAX_REQUESTS
;
407 if (getenv("GIT_CURL_FTP_NO_EPSV"))
408 curl_ftp_no_epsv
= 1;
411 credential_from_url(&http_auth
, url
);
412 if (!ssl_cert_password_required
&&
413 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
414 !prefixcmp(url
, "https://"))
415 ssl_cert_password_required
= 1;
418 #ifndef NO_CURL_EASY_DUPHANDLE
419 curl_default
= get_curl_handle();
423 void http_cleanup(void)
425 struct active_request_slot
*slot
= active_queue_head
;
427 while (slot
!= NULL
) {
428 struct active_request_slot
*next
= slot
->next
;
429 if (slot
->curl
!= NULL
) {
430 #ifdef USE_CURL_MULTI
431 curl_multi_remove_handle(curlm
, slot
->curl
);
433 curl_easy_cleanup(slot
->curl
);
438 active_queue_head
= NULL
;
440 #ifndef NO_CURL_EASY_DUPHANDLE
441 curl_easy_cleanup(curl_default
);
444 #ifdef USE_CURL_MULTI
445 curl_multi_cleanup(curlm
);
447 curl_global_cleanup();
449 curl_slist_free_all(pragma_header
);
450 pragma_header
= NULL
;
452 curl_slist_free_all(no_pragma_header
);
453 no_pragma_header
= NULL
;
455 if (curl_http_proxy
) {
456 free((void *)curl_http_proxy
);
457 curl_http_proxy
= NULL
;
460 if (cert_auth
.password
!= NULL
) {
461 memset(cert_auth
.password
, 0, strlen(cert_auth
.password
));
462 free(cert_auth
.password
);
463 cert_auth
.password
= NULL
;
465 ssl_cert_password_required
= 0;
468 struct active_request_slot
*get_active_slot(void)
470 struct active_request_slot
*slot
= active_queue_head
;
471 struct active_request_slot
*newslot
;
473 #ifdef USE_CURL_MULTI
476 /* Wait for a slot to open up if the queue is full */
477 while (active_requests
>= max_requests
) {
478 curl_multi_perform(curlm
, &num_transfers
);
479 if (num_transfers
< active_requests
)
480 process_curl_messages();
484 while (slot
!= NULL
&& slot
->in_use
)
488 newslot
= xmalloc(sizeof(*newslot
));
489 newslot
->curl
= NULL
;
491 newslot
->next
= NULL
;
493 slot
= active_queue_head
;
495 active_queue_head
= newslot
;
497 while (slot
->next
!= NULL
)
499 slot
->next
= newslot
;
504 if (slot
->curl
== NULL
) {
505 #ifdef NO_CURL_EASY_DUPHANDLE
506 slot
->curl
= get_curl_handle();
508 slot
->curl
= curl_easy_duphandle(curl_default
);
510 curl_session_count
++;
515 slot
->results
= NULL
;
516 slot
->finished
= NULL
;
517 slot
->callback_data
= NULL
;
518 slot
->callback_func
= NULL
;
519 curl_easy_setopt(slot
->curl
, CURLOPT_COOKIEFILE
, curl_cookie_file
);
520 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
521 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
522 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
523 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
524 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
525 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, NULL
);
526 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
527 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
528 curl_easy_setopt(slot
->curl
, CURLOPT_FAILONERROR
, 1);
529 if (http_auth
.password
)
530 init_curl_http_auth(slot
->curl
);
535 int start_active_slot(struct active_request_slot
*slot
)
537 #ifdef USE_CURL_MULTI
538 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
541 if (curlm_result
!= CURLM_OK
&&
542 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
549 * We know there must be something to do, since we just added
552 curl_multi_perform(curlm
, &num_transfers
);
557 #ifdef USE_CURL_MULTI
561 struct fill_chain
*next
;
564 static struct fill_chain
*fill_cfg
;
566 void add_fill_function(void *data
, int (*fill
)(void *))
568 struct fill_chain
*new = xmalloc(sizeof(*new));
569 struct fill_chain
**linkp
= &fill_cfg
;
574 linkp
= &(*linkp
)->next
;
578 void fill_active_slots(void)
580 struct active_request_slot
*slot
= active_queue_head
;
582 while (active_requests
< max_requests
) {
583 struct fill_chain
*fill
;
584 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
585 if (fill
->fill(fill
->data
))
592 while (slot
!= NULL
) {
593 if (!slot
->in_use
&& slot
->curl
!= NULL
594 && curl_session_count
> min_curl_sessions
) {
595 curl_easy_cleanup(slot
->curl
);
597 curl_session_count
--;
603 void step_active_slots(void)
606 CURLMcode curlm_result
;
609 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
610 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
611 if (num_transfers
< active_requests
) {
612 process_curl_messages();
618 void run_active_slot(struct active_request_slot
*slot
)
620 #ifdef USE_CURL_MULTI
625 struct timeval select_timeout
;
628 slot
->finished
= &finished
;
633 #if LIBCURL_VERSION_NUM >= 0x070f04
635 curl_multi_timeout(curlm
, &curl_timeout
);
636 if (curl_timeout
== 0) {
638 } else if (curl_timeout
== -1) {
639 select_timeout
.tv_sec
= 0;
640 select_timeout
.tv_usec
= 50000;
642 select_timeout
.tv_sec
= curl_timeout
/ 1000;
643 select_timeout
.tv_usec
= (curl_timeout
% 1000) * 1000;
646 select_timeout
.tv_sec
= 0;
647 select_timeout
.tv_usec
= 50000;
654 curl_multi_fdset(curlm
, &readfds
, &writefds
, &excfds
, &max_fd
);
657 * It can happen that curl_multi_timeout returns a pathologically
658 * long timeout when curl_multi_fdset returns no file descriptors
659 * to read. See commit message for more details.
662 (select_timeout
.tv_sec
> 0 ||
663 select_timeout
.tv_usec
> 50000)) {
664 select_timeout
.tv_sec
= 0;
665 select_timeout
.tv_usec
= 50000;
668 select(max_fd
+1, &readfds
, &writefds
, &excfds
, &select_timeout
);
672 while (slot
->in_use
) {
673 slot
->curl_result
= curl_easy_perform(slot
->curl
);
674 finish_active_slot(slot
);
679 static void closedown_active_slot(struct active_request_slot
*slot
)
685 static void release_active_slot(struct active_request_slot
*slot
)
687 closedown_active_slot(slot
);
688 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
689 #ifdef USE_CURL_MULTI
690 curl_multi_remove_handle(curlm
, slot
->curl
);
692 curl_easy_cleanup(slot
->curl
);
694 curl_session_count
--;
696 #ifdef USE_CURL_MULTI
701 void finish_active_slot(struct active_request_slot
*slot
)
703 closedown_active_slot(slot
);
704 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CODE
, &slot
->http_code
);
706 if (slot
->finished
!= NULL
)
707 (*slot
->finished
) = 1;
709 /* Store slot results so they can be read after the slot is reused */
710 if (slot
->results
!= NULL
) {
711 slot
->results
->curl_result
= slot
->curl_result
;
712 slot
->results
->http_code
= slot
->http_code
;
715 /* Run callback if appropriate */
716 if (slot
->callback_func
!= NULL
)
717 slot
->callback_func(slot
->callback_data
);
720 void finish_all_active_slots(void)
722 struct active_request_slot
*slot
= active_queue_head
;
726 run_active_slot(slot
);
727 slot
= active_queue_head
;
733 /* Helpers for modifying and creating URLs */
734 static inline int needs_quote(int ch
)
736 if (((ch
>= 'A') && (ch
<= 'Z'))
737 || ((ch
>= 'a') && (ch
<= 'z'))
738 || ((ch
>= '0') && (ch
<= '9'))
746 static char *quote_ref_url(const char *base
, const char *ref
)
748 struct strbuf buf
= STRBUF_INIT
;
752 end_url_with_slash(&buf
, base
);
754 for (cp
= ref
; (ch
= *cp
) != 0; cp
++)
756 strbuf_addf(&buf
, "%%%02x", ch
);
758 strbuf_addch(&buf
, *cp
);
760 return strbuf_detach(&buf
, NULL
);
763 void append_remote_object_url(struct strbuf
*buf
, const char *url
,
765 int only_two_digit_prefix
)
767 end_url_with_slash(buf
, url
);
769 strbuf_addf(buf
, "objects/%.*s/", 2, hex
);
770 if (!only_two_digit_prefix
)
771 strbuf_addf(buf
, "%s", hex
+2);
774 char *get_remote_object_url(const char *url
, const char *hex
,
775 int only_two_digit_prefix
)
777 struct strbuf buf
= STRBUF_INIT
;
778 append_remote_object_url(&buf
, url
, hex
, only_two_digit_prefix
);
779 return strbuf_detach(&buf
, NULL
);
782 int handle_curl_result(struct slot_results
*results
)
785 * If we see a failing http code with CURLE_OK, we have turned off
786 * FAILONERROR (to keep the server's custom error response), and should
787 * translate the code into failure here.
789 if (results
->curl_result
== CURLE_OK
&&
790 results
->http_code
>= 400) {
791 results
->curl_result
= CURLE_HTTP_RETURNED_ERROR
;
793 * Normally curl will already have put the "reason phrase"
794 * from the server into curl_errorstr; unfortunately without
795 * FAILONERROR it is lost, so we can give only the numeric
798 snprintf(curl_errorstr
, sizeof(curl_errorstr
),
799 "The requested URL returned error: %ld",
803 if (results
->curl_result
== CURLE_OK
) {
804 credential_approve(&http_auth
);
806 } else if (missing_target(results
))
807 return HTTP_MISSING_TARGET
;
808 else if (results
->http_code
== 401) {
809 if (http_auth
.username
&& http_auth
.password
) {
810 credential_reject(&http_auth
);
813 credential_fill(&http_auth
);
817 #if LIBCURL_VERSION_NUM >= 0x070c00
818 if (!curl_errorstr
[0])
819 strlcpy(curl_errorstr
,
820 curl_easy_strerror(results
->curl_result
),
821 sizeof(curl_errorstr
));
827 /* http_request() targets */
828 #define HTTP_REQUEST_STRBUF 0
829 #define HTTP_REQUEST_FILE 1
831 static int http_request(const char *url
, struct strbuf
*type
,
832 void *result
, int target
, int options
)
834 struct active_request_slot
*slot
;
835 struct slot_results results
;
836 struct curl_slist
*headers
= NULL
;
837 struct strbuf buf
= STRBUF_INIT
;
840 slot
= get_active_slot();
841 slot
->results
= &results
;
842 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
844 if (result
== NULL
) {
845 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 1);
847 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
848 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, result
);
850 if (target
== HTTP_REQUEST_FILE
) {
851 long posn
= ftell(result
);
852 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
855 strbuf_addf(&buf
, "Range: bytes=%ld-", posn
);
856 headers
= curl_slist_append(headers
, buf
.buf
);
860 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
864 strbuf_addstr(&buf
, "Pragma:");
865 if (options
& HTTP_NO_CACHE
)
866 strbuf_addstr(&buf
, " no-cache");
867 if (options
& HTTP_KEEP_ERROR
)
868 curl_easy_setopt(slot
->curl
, CURLOPT_FAILONERROR
, 0);
870 headers
= curl_slist_append(headers
, buf
.buf
);
872 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, url
);
873 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
874 curl_easy_setopt(slot
->curl
, CURLOPT_ENCODING
, "gzip");
876 if (start_active_slot(slot
)) {
877 run_active_slot(slot
);
878 ret
= handle_curl_result(&results
);
880 snprintf(curl_errorstr
, sizeof(curl_errorstr
),
881 "failed to start HTTP request");
882 ret
= HTTP_START_FAILED
;
888 curl_easy_getinfo(slot
->curl
, CURLINFO_CONTENT_TYPE
, &t
);
890 strbuf_addstr(type
, t
);
893 curl_slist_free_all(headers
);
894 strbuf_release(&buf
);
899 static int http_request_reauth(const char *url
,
901 void *result
, int target
,
904 int ret
= http_request(url
, type
, result
, target
, options
);
905 if (ret
!= HTTP_REAUTH
)
909 * If we are using KEEP_ERROR, the previous request may have
910 * put cruft into our output stream; we should clear it out before
911 * making our next request. We only know how to do this for
912 * the strbuf case, but that is enough to satisfy current callers.
914 if (options
& HTTP_KEEP_ERROR
) {
916 case HTTP_REQUEST_STRBUF
:
917 strbuf_reset(result
);
920 die("BUG: HTTP_KEEP_ERROR is only supported with strbufs");
923 return http_request(url
, type
, result
, target
, options
);
926 int http_get_strbuf(const char *url
,
928 struct strbuf
*result
, int options
)
930 return http_request_reauth(url
, type
, result
,
931 HTTP_REQUEST_STRBUF
, options
);
935 * Downloads a URL and stores the result in the given file.
937 * If a previous interrupted download is detected (i.e. a previous temporary
938 * file is still around) the download is resumed.
940 static int http_get_file(const char *url
, const char *filename
, int options
)
943 struct strbuf tmpfile
= STRBUF_INIT
;
946 strbuf_addf(&tmpfile
, "%s.temp", filename
);
947 result
= fopen(tmpfile
.buf
, "a");
949 error("Unable to open local file %s", tmpfile
.buf
);
954 ret
= http_request_reauth(url
, NULL
, result
, HTTP_REQUEST_FILE
, options
);
957 if ((ret
== HTTP_OK
) && move_temp_to_file(tmpfile
.buf
, filename
))
960 strbuf_release(&tmpfile
);
964 int http_fetch_ref(const char *base
, struct ref
*ref
)
967 struct strbuf buffer
= STRBUF_INIT
;
970 url
= quote_ref_url(base
, ref
->name
);
971 if (http_get_strbuf(url
, NULL
, &buffer
, HTTP_NO_CACHE
) == HTTP_OK
) {
972 strbuf_rtrim(&buffer
);
973 if (buffer
.len
== 40)
974 ret
= get_sha1_hex(buffer
.buf
, ref
->old_sha1
);
975 else if (!prefixcmp(buffer
.buf
, "ref: ")) {
976 ref
->symref
= xstrdup(buffer
.buf
+ 5);
981 strbuf_release(&buffer
);
986 /* Helpers for fetching packs */
987 static char *fetch_pack_index(unsigned char *sha1
, const char *base_url
)
990 struct strbuf buf
= STRBUF_INIT
;
993 fprintf(stderr
, "Getting index for pack %s\n", sha1_to_hex(sha1
));
995 end_url_with_slash(&buf
, base_url
);
996 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", sha1_to_hex(sha1
));
997 url
= strbuf_detach(&buf
, NULL
);
999 strbuf_addf(&buf
, "%s.temp", sha1_pack_index_name(sha1
));
1000 tmp
= strbuf_detach(&buf
, NULL
);
1002 if (http_get_file(url
, tmp
, 0) != HTTP_OK
) {
1003 error("Unable to get pack index %s", url
);
1012 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
1013 unsigned char *sha1
, const char *base_url
)
1015 struct packed_git
*new_pack
;
1016 char *tmp_idx
= NULL
;
1019 if (has_pack_index(sha1
)) {
1020 new_pack
= parse_pack_index(sha1
, NULL
);
1022 return -1; /* parse_pack_index() already issued error message */
1026 tmp_idx
= fetch_pack_index(sha1
, base_url
);
1030 new_pack
= parse_pack_index(sha1
, tmp_idx
);
1035 return -1; /* parse_pack_index() already issued error message */
1038 ret
= verify_pack_index(new_pack
);
1040 close_pack_index(new_pack
);
1041 ret
= move_temp_to_file(tmp_idx
, sha1_pack_index_name(sha1
));
1048 new_pack
->next
= *packs_head
;
1049 *packs_head
= new_pack
;
1053 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
1057 struct strbuf buf
= STRBUF_INIT
;
1058 unsigned char sha1
[20];
1060 end_url_with_slash(&buf
, base_url
);
1061 strbuf_addstr(&buf
, "objects/info/packs");
1062 url
= strbuf_detach(&buf
, NULL
);
1064 ret
= http_get_strbuf(url
, NULL
, &buf
, HTTP_NO_CACHE
);
1069 while (i
< buf
.len
) {
1073 if (i
+ 52 <= buf
.len
&&
1074 !prefixcmp(data
+ i
, " pack-") &&
1075 !prefixcmp(data
+ i
+ 46, ".pack\n")) {
1076 get_sha1_hex(data
+ i
+ 6, sha1
);
1077 fetch_and_setup_pack_index(packs_head
, sha1
,
1083 while (i
< buf
.len
&& data
[i
] != '\n')
1094 void release_http_pack_request(struct http_pack_request
*preq
)
1096 if (preq
->packfile
!= NULL
) {
1097 fclose(preq
->packfile
);
1098 preq
->packfile
= NULL
;
1100 if (preq
->range_header
!= NULL
) {
1101 curl_slist_free_all(preq
->range_header
);
1102 preq
->range_header
= NULL
;
1108 int finish_http_pack_request(struct http_pack_request
*preq
)
1110 struct packed_git
**lst
;
1111 struct packed_git
*p
= preq
->target
;
1113 struct child_process ip
;
1114 const char *ip_argv
[8];
1116 close_pack_index(p
);
1118 fclose(preq
->packfile
);
1119 preq
->packfile
= NULL
;
1123 lst
= &((*lst
)->next
);
1124 *lst
= (*lst
)->next
;
1126 tmp_idx
= xstrdup(preq
->tmpfile
);
1127 strcpy(tmp_idx
+ strlen(tmp_idx
) - strlen(".pack.temp"),
1130 ip_argv
[0] = "index-pack";
1132 ip_argv
[2] = tmp_idx
;
1133 ip_argv
[3] = preq
->tmpfile
;
1136 memset(&ip
, 0, sizeof(ip
));
1142 if (run_command(&ip
)) {
1143 unlink(preq
->tmpfile
);
1149 unlink(sha1_pack_index_name(p
->sha1
));
1151 if (move_temp_to_file(preq
->tmpfile
, sha1_pack_name(p
->sha1
))
1152 || move_temp_to_file(tmp_idx
, sha1_pack_index_name(p
->sha1
))) {
1157 install_packed_git(p
);
1162 struct http_pack_request
*new_http_pack_request(
1163 struct packed_git
*target
, const char *base_url
)
1166 char range
[RANGE_HEADER_SIZE
];
1167 struct strbuf buf
= STRBUF_INIT
;
1168 struct http_pack_request
*preq
;
1170 preq
= xcalloc(1, sizeof(*preq
));
1171 preq
->target
= target
;
1173 end_url_with_slash(&buf
, base_url
);
1174 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1175 sha1_to_hex(target
->sha1
));
1176 preq
->url
= strbuf_detach(&buf
, NULL
);
1178 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp",
1179 sha1_pack_name(target
->sha1
));
1180 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1181 if (!preq
->packfile
) {
1182 error("Unable to open local file %s for pack",
1187 preq
->slot
= get_active_slot();
1188 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1189 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1190 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1191 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1195 * If there is data present from a previous transfer attempt,
1196 * resume where it left off
1198 prev_posn
= ftell(preq
->packfile
);
1200 if (http_is_verbose
)
1202 "Resuming fetch of pack %s at byte %ld\n",
1203 sha1_to_hex(target
->sha1
), prev_posn
);
1204 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1205 preq
->range_header
= curl_slist_append(NULL
, range
);
1206 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1207 preq
->range_header
);
1218 /* Helpers for fetching objects (loose) */
1219 static size_t fwrite_sha1_file(char *ptr
, size_t eltsize
, size_t nmemb
,
1222 unsigned char expn
[4096];
1223 size_t size
= eltsize
* nmemb
;
1225 struct http_object_request
*freq
=
1226 (struct http_object_request
*)data
;
1228 ssize_t retval
= xwrite(freq
->localfile
,
1229 (char *) ptr
+ posn
, size
- posn
);
1233 } while (posn
< size
);
1235 freq
->stream
.avail_in
= size
;
1236 freq
->stream
.next_in
= (void *)ptr
;
1238 freq
->stream
.next_out
= expn
;
1239 freq
->stream
.avail_out
= sizeof(expn
);
1240 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1241 git_SHA1_Update(&freq
->c
, expn
,
1242 sizeof(expn
) - freq
->stream
.avail_out
);
1243 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1247 struct http_object_request
*new_http_object_request(const char *base_url
,
1248 unsigned char *sha1
)
1250 char *hex
= sha1_to_hex(sha1
);
1252 char prevfile
[PATH_MAX
];
1254 char prev_buf
[PREV_BUF_SIZE
];
1255 ssize_t prev_read
= 0;
1257 char range
[RANGE_HEADER_SIZE
];
1258 struct curl_slist
*range_header
= NULL
;
1259 struct http_object_request
*freq
;
1261 freq
= xcalloc(1, sizeof(*freq
));
1262 hashcpy(freq
->sha1
, sha1
);
1263 freq
->localfile
= -1;
1265 filename
= sha1_file_name(sha1
);
1266 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1267 "%s.temp", filename
);
1269 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1270 unlink_or_warn(prevfile
);
1271 rename(freq
->tmpfile
, prevfile
);
1272 unlink_or_warn(freq
->tmpfile
);
1274 if (freq
->localfile
!= -1)
1275 error("fd leakage in start: %d", freq
->localfile
);
1276 freq
->localfile
= open(freq
->tmpfile
,
1277 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1279 * This could have failed due to the "lazy directory creation";
1280 * try to mkdir the last path component.
1282 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1283 char *dir
= strrchr(freq
->tmpfile
, '/');
1286 mkdir(freq
->tmpfile
, 0777);
1289 freq
->localfile
= open(freq
->tmpfile
,
1290 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1293 if (freq
->localfile
< 0) {
1294 error("Couldn't create temporary file %s: %s",
1295 freq
->tmpfile
, strerror(errno
));
1299 git_inflate_init(&freq
->stream
);
1301 git_SHA1_Init(&freq
->c
);
1303 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1306 * If a previous temp file is present, process what was already
1309 prevlocal
= open(prevfile
, O_RDONLY
);
1310 if (prevlocal
!= -1) {
1312 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1314 if (fwrite_sha1_file(prev_buf
,
1317 freq
) == prev_read
) {
1318 prev_posn
+= prev_read
;
1323 } while (prev_read
> 0);
1326 unlink_or_warn(prevfile
);
1329 * Reset inflate/SHA1 if there was an error reading the previous temp
1330 * file; also rewind to the beginning of the local file.
1332 if (prev_read
== -1) {
1333 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1334 git_inflate_init(&freq
->stream
);
1335 git_SHA1_Init(&freq
->c
);
1338 lseek(freq
->localfile
, 0, SEEK_SET
);
1339 if (ftruncate(freq
->localfile
, 0) < 0) {
1340 error("Couldn't truncate temporary file %s: %s",
1341 freq
->tmpfile
, strerror(errno
));
1347 freq
->slot
= get_active_slot();
1349 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1350 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1351 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1352 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1353 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1356 * If we have successfully processed data from a previous fetch
1357 * attempt, only fetch the data we don't already have.
1360 if (http_is_verbose
)
1362 "Resuming fetch of object %s at byte %ld\n",
1364 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1365 range_header
= curl_slist_append(range_header
, range
);
1366 curl_easy_setopt(freq
->slot
->curl
,
1367 CURLOPT_HTTPHEADER
, range_header
);
1378 void process_http_object_request(struct http_object_request
*freq
)
1380 if (freq
->slot
== NULL
)
1382 freq
->curl_result
= freq
->slot
->curl_result
;
1383 freq
->http_code
= freq
->slot
->http_code
;
1387 int finish_http_object_request(struct http_object_request
*freq
)
1391 close(freq
->localfile
);
1392 freq
->localfile
= -1;
1394 process_http_object_request(freq
);
1396 if (freq
->http_code
== 416) {
1397 warning("requested range invalid; we may already have all the data.");
1398 } else if (freq
->curl_result
!= CURLE_OK
) {
1399 if (stat(freq
->tmpfile
, &st
) == 0)
1400 if (st
.st_size
== 0)
1401 unlink_or_warn(freq
->tmpfile
);
1405 git_inflate_end(&freq
->stream
);
1406 git_SHA1_Final(freq
->real_sha1
, &freq
->c
);
1407 if (freq
->zret
!= Z_STREAM_END
) {
1408 unlink_or_warn(freq
->tmpfile
);
1411 if (hashcmp(freq
->sha1
, freq
->real_sha1
)) {
1412 unlink_or_warn(freq
->tmpfile
);
1416 move_temp_to_file(freq
->tmpfile
, sha1_file_name(freq
->sha1
));
1418 return freq
->rename
;
1421 void abort_http_object_request(struct http_object_request
*freq
)
1423 unlink_or_warn(freq
->tmpfile
);
1425 release_http_object_request(freq
);
1428 void release_http_object_request(struct http_object_request
*freq
)
1430 if (freq
->localfile
!= -1) {
1431 close(freq
->localfile
);
1432 freq
->localfile
= -1;
1434 if (freq
->url
!= NULL
) {
1438 if (freq
->slot
!= NULL
) {
1439 freq
->slot
->callback_func
= NULL
;
1440 freq
->slot
->callback_data
= NULL
;
1441 release_active_slot(freq
->slot
);