4 #include "run-command.h"
6 #include "credential.h"
12 size_t http_post_buffer
= 16 * LARGE_PACKET_MAX
;
14 #if LIBCURL_VERSION_NUM >= 0x070a06
15 #define LIBCURL_CAN_HANDLE_AUTH_ANY
18 static int min_curl_sessions
= 1;
19 static int curl_session_count
;
21 static int max_requests
= -1;
24 #ifndef NO_CURL_EASY_DUPHANDLE
25 static CURL
*curl_default
;
28 #define PREV_BUF_SIZE 4096
29 #define RANGE_HEADER_SIZE 30
31 char curl_errorstr
[CURL_ERROR_SIZE
];
33 static int curl_ssl_verify
= -1;
34 static const char *ssl_cert
;
35 #if LIBCURL_VERSION_NUM >= 0x070903
36 static const char *ssl_key
;
38 #if LIBCURL_VERSION_NUM >= 0x070908
39 static const char *ssl_capath
;
41 static const char *ssl_cainfo
;
42 static long curl_low_speed_limit
= -1;
43 static long curl_low_speed_time
= -1;
44 static int curl_ftp_no_epsv
;
45 static const char *curl_http_proxy
;
46 static const char *curl_cookie_file
;
47 static struct credential http_auth
= CREDENTIAL_INIT
;
48 static int http_proactive_auth
;
49 static const char *user_agent
;
51 #if LIBCURL_VERSION_NUM >= 0x071700
52 /* Use CURLOPT_KEYPASSWD as is */
53 #elif LIBCURL_VERSION_NUM >= 0x070903
54 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
56 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
59 static struct credential cert_auth
= CREDENTIAL_INIT
;
60 static int ssl_cert_password_required
;
62 static struct curl_slist
*pragma_header
;
63 static struct curl_slist
*no_pragma_header
;
65 static struct active_request_slot
*active_queue_head
;
67 size_t fread_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
69 size_t size
= eltsize
* nmemb
;
70 struct buffer
*buffer
= buffer_
;
72 if (size
> buffer
->buf
.len
- buffer
->posn
)
73 size
= buffer
->buf
.len
- buffer
->posn
;
74 memcpy(ptr
, buffer
->buf
.buf
+ buffer
->posn
, size
);
81 curlioerr
ioctl_buffer(CURL
*handle
, int cmd
, void *clientp
)
83 struct buffer
*buffer
= clientp
;
89 case CURLIOCMD_RESTARTREAD
:
94 return CURLIOE_UNKNOWNCMD
;
99 size_t fwrite_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
101 size_t size
= eltsize
* nmemb
;
102 struct strbuf
*buffer
= buffer_
;
104 strbuf_add(buffer
, ptr
, size
);
108 size_t fwrite_null(char *ptr
, size_t eltsize
, size_t nmemb
, void *strbuf
)
110 return eltsize
* nmemb
;
113 #ifdef USE_CURL_MULTI
114 static void process_curl_messages(void)
117 struct active_request_slot
*slot
;
118 CURLMsg
*curl_message
= curl_multi_info_read(curlm
, &num_messages
);
120 while (curl_message
!= NULL
) {
121 if (curl_message
->msg
== CURLMSG_DONE
) {
122 int curl_result
= curl_message
->data
.result
;
123 slot
= active_queue_head
;
124 while (slot
!= NULL
&&
125 slot
->curl
!= curl_message
->easy_handle
)
128 curl_multi_remove_handle(curlm
, slot
->curl
);
129 slot
->curl_result
= curl_result
;
130 finish_active_slot(slot
);
132 fprintf(stderr
, "Received DONE message for unknown request!\n");
135 fprintf(stderr
, "Unknown CURL message received: %d\n",
136 (int)curl_message
->msg
);
138 curl_message
= curl_multi_info_read(curlm
, &num_messages
);
143 static int git_config_path(const char **result
,
144 const char *var
, const char *value
)
146 if (git_config_string(result
, var
, value
))
150 *result
= system_path((*result
) + 1);
155 static int http_options(const char *var
, const char *value
, void *cb
)
157 if (!strcmp("http.sslverify", var
)) {
158 curl_ssl_verify
= git_config_bool(var
, value
);
161 if (!strcmp("http.sslcert", var
))
162 return git_config_path(&ssl_cert
, var
, value
);
163 #if LIBCURL_VERSION_NUM >= 0x070903
164 if (!strcmp("http.sslkey", var
))
165 return git_config_path(&ssl_key
, var
, value
);
167 #if LIBCURL_VERSION_NUM >= 0x070908
168 if (!strcmp("http.sslcapath", var
))
169 return git_config_path(&ssl_capath
, var
, value
);
171 if (!strcmp("http.sslcainfo", var
))
172 return git_config_path(&ssl_cainfo
, var
, value
);
173 if (!strcmp("http.sslcertpasswordprotected", var
)) {
174 if (git_config_bool(var
, value
))
175 ssl_cert_password_required
= 1;
178 if (!strcmp("http.minsessions", var
)) {
179 min_curl_sessions
= git_config_int(var
, value
);
180 #ifndef USE_CURL_MULTI
181 if (min_curl_sessions
> 1)
182 min_curl_sessions
= 1;
186 #ifdef USE_CURL_MULTI
187 if (!strcmp("http.maxrequests", var
)) {
188 max_requests
= git_config_int(var
, value
);
192 if (!strcmp("http.lowspeedlimit", var
)) {
193 curl_low_speed_limit
= (long)git_config_int(var
, value
);
196 if (!strcmp("http.lowspeedtime", var
)) {
197 curl_low_speed_time
= (long)git_config_int(var
, value
);
201 if (!strcmp("http.noepsv", var
)) {
202 curl_ftp_no_epsv
= git_config_bool(var
, value
);
205 if (!strcmp("http.proxy", var
))
206 return git_config_string(&curl_http_proxy
, var
, value
);
208 if (!strcmp("http.cookiefile", var
))
209 return git_config_string(&curl_cookie_file
, var
, value
);
211 if (!strcmp("http.postbuffer", var
)) {
212 http_post_buffer
= git_config_int(var
, value
);
213 if (http_post_buffer
< LARGE_PACKET_MAX
)
214 http_post_buffer
= LARGE_PACKET_MAX
;
218 if (!strcmp("http.useragent", var
))
219 return git_config_string(&user_agent
, var
, value
);
221 /* Fall back on the default ones */
222 return git_default_config(var
, value
, cb
);
225 static void init_curl_http_auth(CURL
*result
)
227 if (!http_auth
.username
)
230 credential_fill(&http_auth
);
232 #if LIBCURL_VERSION_NUM >= 0x071301
233 curl_easy_setopt(result
, CURLOPT_USERNAME
, http_auth
.username
);
234 curl_easy_setopt(result
, CURLOPT_PASSWORD
, http_auth
.password
);
237 static struct strbuf up
= STRBUF_INIT
;
239 strbuf_addf(&up
, "%s:%s",
240 http_auth
.username
, http_auth
.password
);
241 curl_easy_setopt(result
, CURLOPT_USERPWD
, up
.buf
);
246 static int has_cert_password(void)
248 if (ssl_cert
== NULL
|| ssl_cert_password_required
!= 1)
250 if (!cert_auth
.password
) {
251 cert_auth
.protocol
= xstrdup("cert");
252 cert_auth
.path
= xstrdup(ssl_cert
);
253 credential_fill(&cert_auth
);
258 static CURL
*get_curl_handle(void)
260 CURL
*result
= curl_easy_init();
262 if (!curl_ssl_verify
) {
263 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 0);
264 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 0);
266 /* Verify authenticity of the peer's certificate */
267 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 1);
268 /* The name in the cert must match whom we tried to connect */
269 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 2);
272 #if LIBCURL_VERSION_NUM >= 0x070907
273 curl_easy_setopt(result
, CURLOPT_NETRC
, CURL_NETRC_OPTIONAL
);
275 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
276 curl_easy_setopt(result
, CURLOPT_HTTPAUTH
, CURLAUTH_ANY
);
279 if (http_proactive_auth
)
280 init_curl_http_auth(result
);
282 if (ssl_cert
!= NULL
)
283 curl_easy_setopt(result
, CURLOPT_SSLCERT
, ssl_cert
);
284 if (has_cert_password())
285 curl_easy_setopt(result
, CURLOPT_KEYPASSWD
, cert_auth
.password
);
286 #if LIBCURL_VERSION_NUM >= 0x070903
288 curl_easy_setopt(result
, CURLOPT_SSLKEY
, ssl_key
);
290 #if LIBCURL_VERSION_NUM >= 0x070908
291 if (ssl_capath
!= NULL
)
292 curl_easy_setopt(result
, CURLOPT_CAPATH
, ssl_capath
);
294 if (ssl_cainfo
!= NULL
)
295 curl_easy_setopt(result
, CURLOPT_CAINFO
, ssl_cainfo
);
296 curl_easy_setopt(result
, CURLOPT_FAILONERROR
, 1);
298 if (curl_low_speed_limit
> 0 && curl_low_speed_time
> 0) {
299 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_LIMIT
,
300 curl_low_speed_limit
);
301 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_TIME
,
302 curl_low_speed_time
);
305 curl_easy_setopt(result
, CURLOPT_FOLLOWLOCATION
, 1);
306 #if LIBCURL_VERSION_NUM >= 0x071301
307 curl_easy_setopt(result
, CURLOPT_POSTREDIR
, CURL_REDIR_POST_ALL
);
308 #elif LIBCURL_VERSION_NUM >= 0x071101
309 curl_easy_setopt(result
, CURLOPT_POST301
, 1);
312 if (getenv("GIT_CURL_VERBOSE"))
313 curl_easy_setopt(result
, CURLOPT_VERBOSE
, 1);
315 curl_easy_setopt(result
, CURLOPT_USERAGENT
,
316 user_agent
? user_agent
: git_user_agent());
318 if (curl_ftp_no_epsv
)
319 curl_easy_setopt(result
, CURLOPT_FTP_USE_EPSV
, 0);
321 if (curl_http_proxy
) {
322 curl_easy_setopt(result
, CURLOPT_PROXY
, curl_http_proxy
);
323 curl_easy_setopt(result
, CURLOPT_PROXYAUTH
, CURLAUTH_ANY
);
329 static void set_from_env(const char **var
, const char *envname
)
331 const char *val
= getenv(envname
);
336 void http_init(struct remote
*remote
, const char *url
, int proactive_auth
)
338 char *low_speed_limit
;
339 char *low_speed_time
;
343 git_config(http_options
, NULL
);
345 curl_global_init(CURL_GLOBAL_ALL
);
347 http_proactive_auth
= proactive_auth
;
349 if (remote
&& remote
->http_proxy
)
350 curl_http_proxy
= xstrdup(remote
->http_proxy
);
352 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
353 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
355 #ifdef USE_CURL_MULTI
357 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
358 if (http_max_requests
!= NULL
)
359 max_requests
= atoi(http_max_requests
);
362 curlm
= curl_multi_init();
364 fprintf(stderr
, "Error creating curl multi handle.\n");
369 if (getenv("GIT_SSL_NO_VERIFY"))
372 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
373 #if LIBCURL_VERSION_NUM >= 0x070903
374 set_from_env(&ssl_key
, "GIT_SSL_KEY");
376 #if LIBCURL_VERSION_NUM >= 0x070908
377 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
379 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
381 set_from_env(&user_agent
, "GIT_HTTP_USER_AGENT");
383 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
384 if (low_speed_limit
!= NULL
)
385 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
386 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
387 if (low_speed_time
!= NULL
)
388 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
390 if (curl_ssl_verify
== -1)
393 curl_session_count
= 0;
394 #ifdef USE_CURL_MULTI
395 if (max_requests
< 1)
396 max_requests
= DEFAULT_MAX_REQUESTS
;
399 if (getenv("GIT_CURL_FTP_NO_EPSV"))
400 curl_ftp_no_epsv
= 1;
403 credential_from_url(&http_auth
, url
);
404 if (!ssl_cert_password_required
&&
405 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
406 !prefixcmp(url
, "https://"))
407 ssl_cert_password_required
= 1;
410 #ifndef NO_CURL_EASY_DUPHANDLE
411 curl_default
= get_curl_handle();
415 void http_cleanup(void)
417 struct active_request_slot
*slot
= active_queue_head
;
419 while (slot
!= NULL
) {
420 struct active_request_slot
*next
= slot
->next
;
421 if (slot
->curl
!= NULL
) {
422 #ifdef USE_CURL_MULTI
423 curl_multi_remove_handle(curlm
, slot
->curl
);
425 curl_easy_cleanup(slot
->curl
);
430 active_queue_head
= NULL
;
432 #ifndef NO_CURL_EASY_DUPHANDLE
433 curl_easy_cleanup(curl_default
);
436 #ifdef USE_CURL_MULTI
437 curl_multi_cleanup(curlm
);
439 curl_global_cleanup();
441 curl_slist_free_all(pragma_header
);
442 pragma_header
= NULL
;
444 curl_slist_free_all(no_pragma_header
);
445 no_pragma_header
= NULL
;
447 if (curl_http_proxy
) {
448 free((void *)curl_http_proxy
);
449 curl_http_proxy
= NULL
;
452 if (cert_auth
.password
!= NULL
) {
453 memset(cert_auth
.password
, 0, strlen(cert_auth
.password
));
454 free(cert_auth
.password
);
455 cert_auth
.password
= NULL
;
457 ssl_cert_password_required
= 0;
460 struct active_request_slot
*get_active_slot(void)
462 struct active_request_slot
*slot
= active_queue_head
;
463 struct active_request_slot
*newslot
;
465 #ifdef USE_CURL_MULTI
468 /* Wait for a slot to open up if the queue is full */
469 while (active_requests
>= max_requests
) {
470 curl_multi_perform(curlm
, &num_transfers
);
471 if (num_transfers
< active_requests
)
472 process_curl_messages();
476 while (slot
!= NULL
&& slot
->in_use
)
480 newslot
= xmalloc(sizeof(*newslot
));
481 newslot
->curl
= NULL
;
483 newslot
->next
= NULL
;
485 slot
= active_queue_head
;
487 active_queue_head
= newslot
;
489 while (slot
->next
!= NULL
)
491 slot
->next
= newslot
;
496 if (slot
->curl
== NULL
) {
497 #ifdef NO_CURL_EASY_DUPHANDLE
498 slot
->curl
= get_curl_handle();
500 slot
->curl
= curl_easy_duphandle(curl_default
);
502 curl_session_count
++;
507 slot
->results
= NULL
;
508 slot
->finished
= NULL
;
509 slot
->callback_data
= NULL
;
510 slot
->callback_func
= NULL
;
511 curl_easy_setopt(slot
->curl
, CURLOPT_COOKIEFILE
, curl_cookie_file
);
512 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
513 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
514 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
515 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
516 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
517 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, NULL
);
518 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
519 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
520 if (http_auth
.password
)
521 init_curl_http_auth(slot
->curl
);
526 int start_active_slot(struct active_request_slot
*slot
)
528 #ifdef USE_CURL_MULTI
529 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
532 if (curlm_result
!= CURLM_OK
&&
533 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
540 * We know there must be something to do, since we just added
543 curl_multi_perform(curlm
, &num_transfers
);
548 #ifdef USE_CURL_MULTI
552 struct fill_chain
*next
;
555 static struct fill_chain
*fill_cfg
;
557 void add_fill_function(void *data
, int (*fill
)(void *))
559 struct fill_chain
*new = xmalloc(sizeof(*new));
560 struct fill_chain
**linkp
= &fill_cfg
;
565 linkp
= &(*linkp
)->next
;
569 void fill_active_slots(void)
571 struct active_request_slot
*slot
= active_queue_head
;
573 while (active_requests
< max_requests
) {
574 struct fill_chain
*fill
;
575 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
576 if (fill
->fill(fill
->data
))
583 while (slot
!= NULL
) {
584 if (!slot
->in_use
&& slot
->curl
!= NULL
585 && curl_session_count
> min_curl_sessions
) {
586 curl_easy_cleanup(slot
->curl
);
588 curl_session_count
--;
594 void step_active_slots(void)
597 CURLMcode curlm_result
;
600 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
601 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
602 if (num_transfers
< active_requests
) {
603 process_curl_messages();
609 void run_active_slot(struct active_request_slot
*slot
)
611 #ifdef USE_CURL_MULTI
616 struct timeval select_timeout
;
619 slot
->finished
= &finished
;
624 #if LIBCURL_VERSION_NUM >= 0x070f04
626 curl_multi_timeout(curlm
, &curl_timeout
);
627 if (curl_timeout
== 0) {
629 } else if (curl_timeout
== -1) {
630 select_timeout
.tv_sec
= 0;
631 select_timeout
.tv_usec
= 50000;
633 select_timeout
.tv_sec
= curl_timeout
/ 1000;
634 select_timeout
.tv_usec
= (curl_timeout
% 1000) * 1000;
637 select_timeout
.tv_sec
= 0;
638 select_timeout
.tv_usec
= 50000;
645 curl_multi_fdset(curlm
, &readfds
, &writefds
, &excfds
, &max_fd
);
648 * It can happen that curl_multi_timeout returns a pathologically
649 * long timeout when curl_multi_fdset returns no file descriptors
650 * to read. See commit message for more details.
653 (select_timeout
.tv_sec
> 0 ||
654 select_timeout
.tv_usec
> 50000)) {
655 select_timeout
.tv_sec
= 0;
656 select_timeout
.tv_usec
= 50000;
659 select(max_fd
+1, &readfds
, &writefds
, &excfds
, &select_timeout
);
663 while (slot
->in_use
) {
664 slot
->curl_result
= curl_easy_perform(slot
->curl
);
665 finish_active_slot(slot
);
670 static void closedown_active_slot(struct active_request_slot
*slot
)
676 static void release_active_slot(struct active_request_slot
*slot
)
678 closedown_active_slot(slot
);
679 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
680 #ifdef USE_CURL_MULTI
681 curl_multi_remove_handle(curlm
, slot
->curl
);
683 curl_easy_cleanup(slot
->curl
);
685 curl_session_count
--;
687 #ifdef USE_CURL_MULTI
692 void finish_active_slot(struct active_request_slot
*slot
)
694 closedown_active_slot(slot
);
695 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CODE
, &slot
->http_code
);
697 if (slot
->finished
!= NULL
)
698 (*slot
->finished
) = 1;
700 /* Store slot results so they can be read after the slot is reused */
701 if (slot
->results
!= NULL
) {
702 slot
->results
->curl_result
= slot
->curl_result
;
703 slot
->results
->http_code
= slot
->http_code
;
706 /* Run callback if appropriate */
707 if (slot
->callback_func
!= NULL
)
708 slot
->callback_func(slot
->callback_data
);
711 void finish_all_active_slots(void)
713 struct active_request_slot
*slot
= active_queue_head
;
717 run_active_slot(slot
);
718 slot
= active_queue_head
;
724 /* Helpers for modifying and creating URLs */
725 static inline int needs_quote(int ch
)
727 if (((ch
>= 'A') && (ch
<= 'Z'))
728 || ((ch
>= 'a') && (ch
<= 'z'))
729 || ((ch
>= '0') && (ch
<= '9'))
737 static char *quote_ref_url(const char *base
, const char *ref
)
739 struct strbuf buf
= STRBUF_INIT
;
743 end_url_with_slash(&buf
, base
);
745 for (cp
= ref
; (ch
= *cp
) != 0; cp
++)
747 strbuf_addf(&buf
, "%%%02x", ch
);
749 strbuf_addch(&buf
, *cp
);
751 return strbuf_detach(&buf
, NULL
);
754 void append_remote_object_url(struct strbuf
*buf
, const char *url
,
756 int only_two_digit_prefix
)
758 end_url_with_slash(buf
, url
);
760 strbuf_addf(buf
, "objects/%.*s/", 2, hex
);
761 if (!only_two_digit_prefix
)
762 strbuf_addf(buf
, "%s", hex
+2);
765 char *get_remote_object_url(const char *url
, const char *hex
,
766 int only_two_digit_prefix
)
768 struct strbuf buf
= STRBUF_INIT
;
769 append_remote_object_url(&buf
, url
, hex
, only_two_digit_prefix
);
770 return strbuf_detach(&buf
, NULL
);
773 int handle_curl_result(struct slot_results
*results
)
775 if (results
->curl_result
== CURLE_OK
) {
776 credential_approve(&http_auth
);
778 } else if (missing_target(results
))
779 return HTTP_MISSING_TARGET
;
780 else if (results
->http_code
== 401) {
781 if (http_auth
.username
&& http_auth
.password
) {
782 credential_reject(&http_auth
);
785 credential_fill(&http_auth
);
789 #if LIBCURL_VERSION_NUM >= 0x070c00
790 if (!curl_errorstr
[0])
791 strlcpy(curl_errorstr
,
792 curl_easy_strerror(results
->curl_result
),
793 sizeof(curl_errorstr
));
799 /* http_request() targets */
800 #define HTTP_REQUEST_STRBUF 0
801 #define HTTP_REQUEST_FILE 1
803 static int http_request(const char *url
, void *result
, int target
, int options
)
805 struct active_request_slot
*slot
;
806 struct slot_results results
;
807 struct curl_slist
*headers
= NULL
;
808 struct strbuf buf
= STRBUF_INIT
;
811 slot
= get_active_slot();
812 slot
->results
= &results
;
813 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
815 if (result
== NULL
) {
816 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 1);
818 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
819 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, result
);
821 if (target
== HTTP_REQUEST_FILE
) {
822 long posn
= ftell(result
);
823 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
826 strbuf_addf(&buf
, "Range: bytes=%ld-", posn
);
827 headers
= curl_slist_append(headers
, buf
.buf
);
831 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
835 strbuf_addstr(&buf
, "Pragma:");
836 if (options
& HTTP_NO_CACHE
)
837 strbuf_addstr(&buf
, " no-cache");
839 headers
= curl_slist_append(headers
, buf
.buf
);
841 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, url
);
842 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
843 curl_easy_setopt(slot
->curl
, CURLOPT_ENCODING
, "gzip");
845 if (start_active_slot(slot
)) {
846 run_active_slot(slot
);
847 ret
= handle_curl_result(&results
);
849 error("Unable to start HTTP request for %s", url
);
850 ret
= HTTP_START_FAILED
;
853 curl_slist_free_all(headers
);
854 strbuf_release(&buf
);
859 static int http_request_reauth(const char *url
, void *result
, int target
,
862 int ret
= http_request(url
, result
, target
, options
);
863 if (ret
!= HTTP_REAUTH
)
865 return http_request(url
, result
, target
, options
);
868 int http_get_strbuf(const char *url
, struct strbuf
*result
, int options
)
870 return http_request_reauth(url
, result
, HTTP_REQUEST_STRBUF
, options
);
874 * Downloads a URL and stores the result in the given file.
876 * If a previous interrupted download is detected (i.e. a previous temporary
877 * file is still around) the download is resumed.
879 static int http_get_file(const char *url
, const char *filename
, int options
)
882 struct strbuf tmpfile
= STRBUF_INIT
;
885 strbuf_addf(&tmpfile
, "%s.temp", filename
);
886 result
= fopen(tmpfile
.buf
, "a");
888 error("Unable to open local file %s", tmpfile
.buf
);
893 ret
= http_request_reauth(url
, result
, HTTP_REQUEST_FILE
, options
);
896 if ((ret
== HTTP_OK
) && move_temp_to_file(tmpfile
.buf
, filename
))
899 strbuf_release(&tmpfile
);
903 int http_error(const char *url
, int ret
)
905 /* http_request has already handled HTTP_START_FAILED. */
906 if (ret
!= HTTP_START_FAILED
)
907 error("%s while accessing %s", curl_errorstr
, url
);
912 int http_fetch_ref(const char *base
, struct ref
*ref
)
915 struct strbuf buffer
= STRBUF_INIT
;
918 url
= quote_ref_url(base
, ref
->name
);
919 if (http_get_strbuf(url
, &buffer
, HTTP_NO_CACHE
) == HTTP_OK
) {
920 strbuf_rtrim(&buffer
);
921 if (buffer
.len
== 40)
922 ret
= get_sha1_hex(buffer
.buf
, ref
->old_sha1
);
923 else if (!prefixcmp(buffer
.buf
, "ref: ")) {
924 ref
->symref
= xstrdup(buffer
.buf
+ 5);
929 strbuf_release(&buffer
);
934 /* Helpers for fetching packs */
935 static char *fetch_pack_index(unsigned char *sha1
, const char *base_url
)
938 struct strbuf buf
= STRBUF_INIT
;
941 fprintf(stderr
, "Getting index for pack %s\n", sha1_to_hex(sha1
));
943 end_url_with_slash(&buf
, base_url
);
944 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", sha1_to_hex(sha1
));
945 url
= strbuf_detach(&buf
, NULL
);
947 strbuf_addf(&buf
, "%s.temp", sha1_pack_index_name(sha1
));
948 tmp
= strbuf_detach(&buf
, NULL
);
950 if (http_get_file(url
, tmp
, 0) != HTTP_OK
) {
951 error("Unable to get pack index %s", url
);
960 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
961 unsigned char *sha1
, const char *base_url
)
963 struct packed_git
*new_pack
;
964 char *tmp_idx
= NULL
;
967 if (has_pack_index(sha1
)) {
968 new_pack
= parse_pack_index(sha1
, NULL
);
970 return -1; /* parse_pack_index() already issued error message */
974 tmp_idx
= fetch_pack_index(sha1
, base_url
);
978 new_pack
= parse_pack_index(sha1
, tmp_idx
);
983 return -1; /* parse_pack_index() already issued error message */
986 ret
= verify_pack_index(new_pack
);
988 close_pack_index(new_pack
);
989 ret
= move_temp_to_file(tmp_idx
, sha1_pack_index_name(sha1
));
996 new_pack
->next
= *packs_head
;
997 *packs_head
= new_pack
;
1001 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
1005 struct strbuf buf
= STRBUF_INIT
;
1006 unsigned char sha1
[20];
1008 end_url_with_slash(&buf
, base_url
);
1009 strbuf_addstr(&buf
, "objects/info/packs");
1010 url
= strbuf_detach(&buf
, NULL
);
1012 ret
= http_get_strbuf(url
, &buf
, HTTP_NO_CACHE
);
1017 while (i
< buf
.len
) {
1021 if (i
+ 52 <= buf
.len
&&
1022 !prefixcmp(data
+ i
, " pack-") &&
1023 !prefixcmp(data
+ i
+ 46, ".pack\n")) {
1024 get_sha1_hex(data
+ i
+ 6, sha1
);
1025 fetch_and_setup_pack_index(packs_head
, sha1
,
1031 while (i
< buf
.len
&& data
[i
] != '\n')
1042 void release_http_pack_request(struct http_pack_request
*preq
)
1044 if (preq
->packfile
!= NULL
) {
1045 fclose(preq
->packfile
);
1046 preq
->packfile
= NULL
;
1048 if (preq
->range_header
!= NULL
) {
1049 curl_slist_free_all(preq
->range_header
);
1050 preq
->range_header
= NULL
;
1056 int finish_http_pack_request(struct http_pack_request
*preq
)
1058 struct packed_git
**lst
;
1059 struct packed_git
*p
= preq
->target
;
1061 struct child_process ip
;
1062 const char *ip_argv
[8];
1064 close_pack_index(p
);
1066 fclose(preq
->packfile
);
1067 preq
->packfile
= NULL
;
1071 lst
= &((*lst
)->next
);
1072 *lst
= (*lst
)->next
;
1074 tmp_idx
= xstrdup(preq
->tmpfile
);
1075 strcpy(tmp_idx
+ strlen(tmp_idx
) - strlen(".pack.temp"),
1078 ip_argv
[0] = "index-pack";
1080 ip_argv
[2] = tmp_idx
;
1081 ip_argv
[3] = preq
->tmpfile
;
1084 memset(&ip
, 0, sizeof(ip
));
1090 if (run_command(&ip
)) {
1091 unlink(preq
->tmpfile
);
1097 unlink(sha1_pack_index_name(p
->sha1
));
1099 if (move_temp_to_file(preq
->tmpfile
, sha1_pack_name(p
->sha1
))
1100 || move_temp_to_file(tmp_idx
, sha1_pack_index_name(p
->sha1
))) {
1105 install_packed_git(p
);
1110 struct http_pack_request
*new_http_pack_request(
1111 struct packed_git
*target
, const char *base_url
)
1114 char range
[RANGE_HEADER_SIZE
];
1115 struct strbuf buf
= STRBUF_INIT
;
1116 struct http_pack_request
*preq
;
1118 preq
= xcalloc(1, sizeof(*preq
));
1119 preq
->target
= target
;
1121 end_url_with_slash(&buf
, base_url
);
1122 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1123 sha1_to_hex(target
->sha1
));
1124 preq
->url
= strbuf_detach(&buf
, NULL
);
1126 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp",
1127 sha1_pack_name(target
->sha1
));
1128 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1129 if (!preq
->packfile
) {
1130 error("Unable to open local file %s for pack",
1135 preq
->slot
= get_active_slot();
1136 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1137 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1138 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1139 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1143 * If there is data present from a previous transfer attempt,
1144 * resume where it left off
1146 prev_posn
= ftell(preq
->packfile
);
1148 if (http_is_verbose
)
1150 "Resuming fetch of pack %s at byte %ld\n",
1151 sha1_to_hex(target
->sha1
), prev_posn
);
1152 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1153 preq
->range_header
= curl_slist_append(NULL
, range
);
1154 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1155 preq
->range_header
);
1166 /* Helpers for fetching objects (loose) */
1167 static size_t fwrite_sha1_file(char *ptr
, size_t eltsize
, size_t nmemb
,
1170 unsigned char expn
[4096];
1171 size_t size
= eltsize
* nmemb
;
1173 struct http_object_request
*freq
=
1174 (struct http_object_request
*)data
;
1176 ssize_t retval
= xwrite(freq
->localfile
,
1177 (char *) ptr
+ posn
, size
- posn
);
1181 } while (posn
< size
);
1183 freq
->stream
.avail_in
= size
;
1184 freq
->stream
.next_in
= (void *)ptr
;
1186 freq
->stream
.next_out
= expn
;
1187 freq
->stream
.avail_out
= sizeof(expn
);
1188 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1189 git_SHA1_Update(&freq
->c
, expn
,
1190 sizeof(expn
) - freq
->stream
.avail_out
);
1191 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1195 struct http_object_request
*new_http_object_request(const char *base_url
,
1196 unsigned char *sha1
)
1198 char *hex
= sha1_to_hex(sha1
);
1200 char prevfile
[PATH_MAX
];
1202 char prev_buf
[PREV_BUF_SIZE
];
1203 ssize_t prev_read
= 0;
1205 char range
[RANGE_HEADER_SIZE
];
1206 struct curl_slist
*range_header
= NULL
;
1207 struct http_object_request
*freq
;
1209 freq
= xcalloc(1, sizeof(*freq
));
1210 hashcpy(freq
->sha1
, sha1
);
1211 freq
->localfile
= -1;
1213 filename
= sha1_file_name(sha1
);
1214 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1215 "%s.temp", filename
);
1217 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1218 unlink_or_warn(prevfile
);
1219 rename(freq
->tmpfile
, prevfile
);
1220 unlink_or_warn(freq
->tmpfile
);
1222 if (freq
->localfile
!= -1)
1223 error("fd leakage in start: %d", freq
->localfile
);
1224 freq
->localfile
= open(freq
->tmpfile
,
1225 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1227 * This could have failed due to the "lazy directory creation";
1228 * try to mkdir the last path component.
1230 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1231 char *dir
= strrchr(freq
->tmpfile
, '/');
1234 mkdir(freq
->tmpfile
, 0777);
1237 freq
->localfile
= open(freq
->tmpfile
,
1238 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1241 if (freq
->localfile
< 0) {
1242 error("Couldn't create temporary file %s: %s",
1243 freq
->tmpfile
, strerror(errno
));
1247 git_inflate_init(&freq
->stream
);
1249 git_SHA1_Init(&freq
->c
);
1251 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1254 * If a previous temp file is present, process what was already
1257 prevlocal
= open(prevfile
, O_RDONLY
);
1258 if (prevlocal
!= -1) {
1260 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1262 if (fwrite_sha1_file(prev_buf
,
1265 freq
) == prev_read
) {
1266 prev_posn
+= prev_read
;
1271 } while (prev_read
> 0);
1274 unlink_or_warn(prevfile
);
1277 * Reset inflate/SHA1 if there was an error reading the previous temp
1278 * file; also rewind to the beginning of the local file.
1280 if (prev_read
== -1) {
1281 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1282 git_inflate_init(&freq
->stream
);
1283 git_SHA1_Init(&freq
->c
);
1286 lseek(freq
->localfile
, 0, SEEK_SET
);
1287 if (ftruncate(freq
->localfile
, 0) < 0) {
1288 error("Couldn't truncate temporary file %s: %s",
1289 freq
->tmpfile
, strerror(errno
));
1295 freq
->slot
= get_active_slot();
1297 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1298 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1299 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1300 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1301 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1304 * If we have successfully processed data from a previous fetch
1305 * attempt, only fetch the data we don't already have.
1308 if (http_is_verbose
)
1310 "Resuming fetch of object %s at byte %ld\n",
1312 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1313 range_header
= curl_slist_append(range_header
, range
);
1314 curl_easy_setopt(freq
->slot
->curl
,
1315 CURLOPT_HTTPHEADER
, range_header
);
1326 void process_http_object_request(struct http_object_request
*freq
)
1328 if (freq
->slot
== NULL
)
1330 freq
->curl_result
= freq
->slot
->curl_result
;
1331 freq
->http_code
= freq
->slot
->http_code
;
1335 int finish_http_object_request(struct http_object_request
*freq
)
1339 close(freq
->localfile
);
1340 freq
->localfile
= -1;
1342 process_http_object_request(freq
);
1344 if (freq
->http_code
== 416) {
1345 warning("requested range invalid; we may already have all the data.");
1346 } else if (freq
->curl_result
!= CURLE_OK
) {
1347 if (stat(freq
->tmpfile
, &st
) == 0)
1348 if (st
.st_size
== 0)
1349 unlink_or_warn(freq
->tmpfile
);
1353 git_inflate_end(&freq
->stream
);
1354 git_SHA1_Final(freq
->real_sha1
, &freq
->c
);
1355 if (freq
->zret
!= Z_STREAM_END
) {
1356 unlink_or_warn(freq
->tmpfile
);
1359 if (hashcmp(freq
->sha1
, freq
->real_sha1
)) {
1360 unlink_or_warn(freq
->tmpfile
);
1364 move_temp_to_file(freq
->tmpfile
, sha1_file_name(freq
->sha1
));
1366 return freq
->rename
;
1369 void abort_http_object_request(struct http_object_request
*freq
)
1371 unlink_or_warn(freq
->tmpfile
);
1373 release_http_object_request(freq
);
1376 void release_http_object_request(struct http_object_request
*freq
)
1378 if (freq
->localfile
!= -1) {
1379 close(freq
->localfile
);
1380 freq
->localfile
= -1;
1382 if (freq
->url
!= NULL
) {
1386 if (freq
->slot
!= NULL
) {
1387 freq
->slot
->callback_func
= NULL
;
1388 freq
->slot
->callback_data
= NULL
;
1389 release_active_slot(freq
->slot
);