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
.username
= xstrdup("");
253 cert_auth
.path
= xstrdup(ssl_cert
);
254 credential_fill(&cert_auth
);
259 static CURL
*get_curl_handle(void)
261 CURL
*result
= curl_easy_init();
263 if (!curl_ssl_verify
) {
264 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 0);
265 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 0);
267 /* Verify authenticity of the peer's certificate */
268 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 1);
269 /* The name in the cert must match whom we tried to connect */
270 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 2);
273 #if LIBCURL_VERSION_NUM >= 0x070907
274 curl_easy_setopt(result
, CURLOPT_NETRC
, CURL_NETRC_OPTIONAL
);
276 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
277 curl_easy_setopt(result
, CURLOPT_HTTPAUTH
, CURLAUTH_ANY
);
280 if (http_proactive_auth
)
281 init_curl_http_auth(result
);
283 if (ssl_cert
!= NULL
)
284 curl_easy_setopt(result
, CURLOPT_SSLCERT
, ssl_cert
);
285 if (has_cert_password())
286 curl_easy_setopt(result
, CURLOPT_KEYPASSWD
, cert_auth
.password
);
287 #if LIBCURL_VERSION_NUM >= 0x070903
289 curl_easy_setopt(result
, CURLOPT_SSLKEY
, ssl_key
);
291 #if LIBCURL_VERSION_NUM >= 0x070908
292 if (ssl_capath
!= NULL
)
293 curl_easy_setopt(result
, CURLOPT_CAPATH
, ssl_capath
);
295 if (ssl_cainfo
!= NULL
)
296 curl_easy_setopt(result
, CURLOPT_CAINFO
, ssl_cainfo
);
297 curl_easy_setopt(result
, CURLOPT_FAILONERROR
, 1);
299 if (curl_low_speed_limit
> 0 && curl_low_speed_time
> 0) {
300 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_LIMIT
,
301 curl_low_speed_limit
);
302 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_TIME
,
303 curl_low_speed_time
);
306 curl_easy_setopt(result
, CURLOPT_FOLLOWLOCATION
, 1);
307 #if LIBCURL_VERSION_NUM >= 0x071301
308 curl_easy_setopt(result
, CURLOPT_POSTREDIR
, CURL_REDIR_POST_ALL
);
309 #elif LIBCURL_VERSION_NUM >= 0x071101
310 curl_easy_setopt(result
, CURLOPT_POST301
, 1);
313 if (getenv("GIT_CURL_VERBOSE"))
314 curl_easy_setopt(result
, CURLOPT_VERBOSE
, 1);
316 curl_easy_setopt(result
, CURLOPT_USERAGENT
,
317 user_agent
? user_agent
: git_user_agent());
319 if (curl_ftp_no_epsv
)
320 curl_easy_setopt(result
, CURLOPT_FTP_USE_EPSV
, 0);
322 if (curl_http_proxy
) {
323 curl_easy_setopt(result
, CURLOPT_PROXY
, curl_http_proxy
);
324 curl_easy_setopt(result
, CURLOPT_PROXYAUTH
, CURLAUTH_ANY
);
330 static void set_from_env(const char **var
, const char *envname
)
332 const char *val
= getenv(envname
);
337 void http_init(struct remote
*remote
, const char *url
, int proactive_auth
)
339 char *low_speed_limit
;
340 char *low_speed_time
;
344 git_config(http_options
, NULL
);
346 curl_global_init(CURL_GLOBAL_ALL
);
348 http_proactive_auth
= proactive_auth
;
350 if (remote
&& remote
->http_proxy
)
351 curl_http_proxy
= xstrdup(remote
->http_proxy
);
353 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
354 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
356 #ifdef USE_CURL_MULTI
358 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
359 if (http_max_requests
!= NULL
)
360 max_requests
= atoi(http_max_requests
);
363 curlm
= curl_multi_init();
365 fprintf(stderr
, "Error creating curl multi handle.\n");
370 if (getenv("GIT_SSL_NO_VERIFY"))
373 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
374 #if LIBCURL_VERSION_NUM >= 0x070903
375 set_from_env(&ssl_key
, "GIT_SSL_KEY");
377 #if LIBCURL_VERSION_NUM >= 0x070908
378 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
380 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
382 set_from_env(&user_agent
, "GIT_HTTP_USER_AGENT");
384 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
385 if (low_speed_limit
!= NULL
)
386 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
387 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
388 if (low_speed_time
!= NULL
)
389 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
391 if (curl_ssl_verify
== -1)
394 curl_session_count
= 0;
395 #ifdef USE_CURL_MULTI
396 if (max_requests
< 1)
397 max_requests
= DEFAULT_MAX_REQUESTS
;
400 if (getenv("GIT_CURL_FTP_NO_EPSV"))
401 curl_ftp_no_epsv
= 1;
404 credential_from_url(&http_auth
, url
);
405 if (!ssl_cert_password_required
&&
406 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
407 !prefixcmp(url
, "https://"))
408 ssl_cert_password_required
= 1;
411 #ifndef NO_CURL_EASY_DUPHANDLE
412 curl_default
= get_curl_handle();
416 void http_cleanup(void)
418 struct active_request_slot
*slot
= active_queue_head
;
420 while (slot
!= NULL
) {
421 struct active_request_slot
*next
= slot
->next
;
422 if (slot
->curl
!= NULL
) {
423 #ifdef USE_CURL_MULTI
424 curl_multi_remove_handle(curlm
, slot
->curl
);
426 curl_easy_cleanup(slot
->curl
);
431 active_queue_head
= NULL
;
433 #ifndef NO_CURL_EASY_DUPHANDLE
434 curl_easy_cleanup(curl_default
);
437 #ifdef USE_CURL_MULTI
438 curl_multi_cleanup(curlm
);
440 curl_global_cleanup();
442 curl_slist_free_all(pragma_header
);
443 pragma_header
= NULL
;
445 curl_slist_free_all(no_pragma_header
);
446 no_pragma_header
= NULL
;
448 if (curl_http_proxy
) {
449 free((void *)curl_http_proxy
);
450 curl_http_proxy
= NULL
;
453 if (cert_auth
.password
!= NULL
) {
454 memset(cert_auth
.password
, 0, strlen(cert_auth
.password
));
455 free(cert_auth
.password
);
456 cert_auth
.password
= NULL
;
458 ssl_cert_password_required
= 0;
461 struct active_request_slot
*get_active_slot(void)
463 struct active_request_slot
*slot
= active_queue_head
;
464 struct active_request_slot
*newslot
;
466 #ifdef USE_CURL_MULTI
469 /* Wait for a slot to open up if the queue is full */
470 while (active_requests
>= max_requests
) {
471 curl_multi_perform(curlm
, &num_transfers
);
472 if (num_transfers
< active_requests
)
473 process_curl_messages();
477 while (slot
!= NULL
&& slot
->in_use
)
481 newslot
= xmalloc(sizeof(*newslot
));
482 newslot
->curl
= NULL
;
484 newslot
->next
= NULL
;
486 slot
= active_queue_head
;
488 active_queue_head
= newslot
;
490 while (slot
->next
!= NULL
)
492 slot
->next
= newslot
;
497 if (slot
->curl
== NULL
) {
498 #ifdef NO_CURL_EASY_DUPHANDLE
499 slot
->curl
= get_curl_handle();
501 slot
->curl
= curl_easy_duphandle(curl_default
);
503 curl_session_count
++;
508 slot
->results
= NULL
;
509 slot
->finished
= NULL
;
510 slot
->callback_data
= NULL
;
511 slot
->callback_func
= NULL
;
512 curl_easy_setopt(slot
->curl
, CURLOPT_COOKIEFILE
, curl_cookie_file
);
513 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
514 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
515 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
516 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
517 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
518 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, NULL
);
519 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
520 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
521 if (http_auth
.password
)
522 init_curl_http_auth(slot
->curl
);
527 int start_active_slot(struct active_request_slot
*slot
)
529 #ifdef USE_CURL_MULTI
530 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
533 if (curlm_result
!= CURLM_OK
&&
534 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
541 * We know there must be something to do, since we just added
544 curl_multi_perform(curlm
, &num_transfers
);
549 #ifdef USE_CURL_MULTI
553 struct fill_chain
*next
;
556 static struct fill_chain
*fill_cfg
;
558 void add_fill_function(void *data
, int (*fill
)(void *))
560 struct fill_chain
*new = xmalloc(sizeof(*new));
561 struct fill_chain
**linkp
= &fill_cfg
;
566 linkp
= &(*linkp
)->next
;
570 void fill_active_slots(void)
572 struct active_request_slot
*slot
= active_queue_head
;
574 while (active_requests
< max_requests
) {
575 struct fill_chain
*fill
;
576 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
577 if (fill
->fill(fill
->data
))
584 while (slot
!= NULL
) {
585 if (!slot
->in_use
&& slot
->curl
!= NULL
586 && curl_session_count
> min_curl_sessions
) {
587 curl_easy_cleanup(slot
->curl
);
589 curl_session_count
--;
595 void step_active_slots(void)
598 CURLMcode curlm_result
;
601 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
602 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
603 if (num_transfers
< active_requests
) {
604 process_curl_messages();
610 void run_active_slot(struct active_request_slot
*slot
)
612 #ifdef USE_CURL_MULTI
617 struct timeval select_timeout
;
620 slot
->finished
= &finished
;
625 #if LIBCURL_VERSION_NUM >= 0x070f04
627 curl_multi_timeout(curlm
, &curl_timeout
);
628 if (curl_timeout
== 0) {
630 } else if (curl_timeout
== -1) {
631 select_timeout
.tv_sec
= 0;
632 select_timeout
.tv_usec
= 50000;
634 select_timeout
.tv_sec
= curl_timeout
/ 1000;
635 select_timeout
.tv_usec
= (curl_timeout
% 1000) * 1000;
638 select_timeout
.tv_sec
= 0;
639 select_timeout
.tv_usec
= 50000;
646 curl_multi_fdset(curlm
, &readfds
, &writefds
, &excfds
, &max_fd
);
649 * It can happen that curl_multi_timeout returns a pathologically
650 * long timeout when curl_multi_fdset returns no file descriptors
651 * to read. See commit message for more details.
654 (select_timeout
.tv_sec
> 0 ||
655 select_timeout
.tv_usec
> 50000)) {
656 select_timeout
.tv_sec
= 0;
657 select_timeout
.tv_usec
= 50000;
660 select(max_fd
+1, &readfds
, &writefds
, &excfds
, &select_timeout
);
664 while (slot
->in_use
) {
665 slot
->curl_result
= curl_easy_perform(slot
->curl
);
666 finish_active_slot(slot
);
671 static void closedown_active_slot(struct active_request_slot
*slot
)
677 static void release_active_slot(struct active_request_slot
*slot
)
679 closedown_active_slot(slot
);
680 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
681 #ifdef USE_CURL_MULTI
682 curl_multi_remove_handle(curlm
, slot
->curl
);
684 curl_easy_cleanup(slot
->curl
);
686 curl_session_count
--;
688 #ifdef USE_CURL_MULTI
693 void finish_active_slot(struct active_request_slot
*slot
)
695 closedown_active_slot(slot
);
696 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CODE
, &slot
->http_code
);
698 if (slot
->finished
!= NULL
)
699 (*slot
->finished
) = 1;
701 /* Store slot results so they can be read after the slot is reused */
702 if (slot
->results
!= NULL
) {
703 slot
->results
->curl_result
= slot
->curl_result
;
704 slot
->results
->http_code
= slot
->http_code
;
707 /* Run callback if appropriate */
708 if (slot
->callback_func
!= NULL
)
709 slot
->callback_func(slot
->callback_data
);
712 void finish_all_active_slots(void)
714 struct active_request_slot
*slot
= active_queue_head
;
718 run_active_slot(slot
);
719 slot
= active_queue_head
;
725 /* Helpers for modifying and creating URLs */
726 static inline int needs_quote(int ch
)
728 if (((ch
>= 'A') && (ch
<= 'Z'))
729 || ((ch
>= 'a') && (ch
<= 'z'))
730 || ((ch
>= '0') && (ch
<= '9'))
738 static char *quote_ref_url(const char *base
, const char *ref
)
740 struct strbuf buf
= STRBUF_INIT
;
744 end_url_with_slash(&buf
, base
);
746 for (cp
= ref
; (ch
= *cp
) != 0; cp
++)
748 strbuf_addf(&buf
, "%%%02x", ch
);
750 strbuf_addch(&buf
, *cp
);
752 return strbuf_detach(&buf
, NULL
);
755 void append_remote_object_url(struct strbuf
*buf
, const char *url
,
757 int only_two_digit_prefix
)
759 end_url_with_slash(buf
, url
);
761 strbuf_addf(buf
, "objects/%.*s/", 2, hex
);
762 if (!only_two_digit_prefix
)
763 strbuf_addf(buf
, "%s", hex
+2);
766 char *get_remote_object_url(const char *url
, const char *hex
,
767 int only_two_digit_prefix
)
769 struct strbuf buf
= STRBUF_INIT
;
770 append_remote_object_url(&buf
, url
, hex
, only_two_digit_prefix
);
771 return strbuf_detach(&buf
, NULL
);
774 int handle_curl_result(struct slot_results
*results
)
776 if (results
->curl_result
== CURLE_OK
) {
777 credential_approve(&http_auth
);
779 } else if (missing_target(results
))
780 return HTTP_MISSING_TARGET
;
781 else if (results
->http_code
== 401) {
782 if (http_auth
.username
&& http_auth
.password
) {
783 credential_reject(&http_auth
);
786 credential_fill(&http_auth
);
790 #if LIBCURL_VERSION_NUM >= 0x070c00
791 if (!curl_errorstr
[0])
792 strlcpy(curl_errorstr
,
793 curl_easy_strerror(results
->curl_result
),
794 sizeof(curl_errorstr
));
800 /* http_request() targets */
801 #define HTTP_REQUEST_STRBUF 0
802 #define HTTP_REQUEST_FILE 1
804 static int http_request(const char *url
, void *result
, int target
, int options
)
806 struct active_request_slot
*slot
;
807 struct slot_results results
;
808 struct curl_slist
*headers
= NULL
;
809 struct strbuf buf
= STRBUF_INIT
;
812 slot
= get_active_slot();
813 slot
->results
= &results
;
814 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
816 if (result
== NULL
) {
817 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 1);
819 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
820 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, result
);
822 if (target
== HTTP_REQUEST_FILE
) {
823 long posn
= ftell(result
);
824 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
827 strbuf_addf(&buf
, "Range: bytes=%ld-", posn
);
828 headers
= curl_slist_append(headers
, buf
.buf
);
832 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
836 strbuf_addstr(&buf
, "Pragma:");
837 if (options
& HTTP_NO_CACHE
)
838 strbuf_addstr(&buf
, " no-cache");
840 headers
= curl_slist_append(headers
, buf
.buf
);
842 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, url
);
843 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
844 curl_easy_setopt(slot
->curl
, CURLOPT_ENCODING
, "gzip");
846 if (start_active_slot(slot
)) {
847 run_active_slot(slot
);
848 ret
= handle_curl_result(&results
);
850 error("Unable to start HTTP request for %s", url
);
851 ret
= HTTP_START_FAILED
;
854 curl_slist_free_all(headers
);
855 strbuf_release(&buf
);
860 static int http_request_reauth(const char *url
, void *result
, int target
,
863 int ret
= http_request(url
, result
, target
, options
);
864 if (ret
!= HTTP_REAUTH
)
866 return http_request(url
, result
, target
, options
);
869 int http_get_strbuf(const char *url
, struct strbuf
*result
, int options
)
871 return http_request_reauth(url
, result
, HTTP_REQUEST_STRBUF
, options
);
875 * Downloads a URL and stores the result in the given file.
877 * If a previous interrupted download is detected (i.e. a previous temporary
878 * file is still around) the download is resumed.
880 static int http_get_file(const char *url
, const char *filename
, int options
)
883 struct strbuf tmpfile
= STRBUF_INIT
;
886 strbuf_addf(&tmpfile
, "%s.temp", filename
);
887 result
= fopen(tmpfile
.buf
, "a");
889 error("Unable to open local file %s", tmpfile
.buf
);
894 ret
= http_request_reauth(url
, result
, HTTP_REQUEST_FILE
, options
);
897 if ((ret
== HTTP_OK
) && move_temp_to_file(tmpfile
.buf
, filename
))
900 strbuf_release(&tmpfile
);
904 int http_error(const char *url
, int ret
)
906 /* http_request has already handled HTTP_START_FAILED. */
907 if (ret
!= HTTP_START_FAILED
)
908 error("%s while accessing %s", curl_errorstr
, url
);
913 int http_fetch_ref(const char *base
, struct ref
*ref
)
916 struct strbuf buffer
= STRBUF_INIT
;
919 url
= quote_ref_url(base
, ref
->name
);
920 if (http_get_strbuf(url
, &buffer
, HTTP_NO_CACHE
) == HTTP_OK
) {
921 strbuf_rtrim(&buffer
);
922 if (buffer
.len
== 40)
923 ret
= get_sha1_hex(buffer
.buf
, ref
->old_sha1
);
924 else if (!prefixcmp(buffer
.buf
, "ref: ")) {
925 ref
->symref
= xstrdup(buffer
.buf
+ 5);
930 strbuf_release(&buffer
);
935 /* Helpers for fetching packs */
936 static char *fetch_pack_index(unsigned char *sha1
, const char *base_url
)
939 struct strbuf buf
= STRBUF_INIT
;
942 fprintf(stderr
, "Getting index for pack %s\n", sha1_to_hex(sha1
));
944 end_url_with_slash(&buf
, base_url
);
945 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", sha1_to_hex(sha1
));
946 url
= strbuf_detach(&buf
, NULL
);
948 strbuf_addf(&buf
, "%s.temp", sha1_pack_index_name(sha1
));
949 tmp
= strbuf_detach(&buf
, NULL
);
951 if (http_get_file(url
, tmp
, 0) != HTTP_OK
) {
952 error("Unable to get pack index %s", url
);
961 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
962 unsigned char *sha1
, const char *base_url
)
964 struct packed_git
*new_pack
;
965 char *tmp_idx
= NULL
;
968 if (has_pack_index(sha1
)) {
969 new_pack
= parse_pack_index(sha1
, NULL
);
971 return -1; /* parse_pack_index() already issued error message */
975 tmp_idx
= fetch_pack_index(sha1
, base_url
);
979 new_pack
= parse_pack_index(sha1
, tmp_idx
);
984 return -1; /* parse_pack_index() already issued error message */
987 ret
= verify_pack_index(new_pack
);
989 close_pack_index(new_pack
);
990 ret
= move_temp_to_file(tmp_idx
, sha1_pack_index_name(sha1
));
997 new_pack
->next
= *packs_head
;
998 *packs_head
= new_pack
;
1002 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
1006 struct strbuf buf
= STRBUF_INIT
;
1007 unsigned char sha1
[20];
1009 end_url_with_slash(&buf
, base_url
);
1010 strbuf_addstr(&buf
, "objects/info/packs");
1011 url
= strbuf_detach(&buf
, NULL
);
1013 ret
= http_get_strbuf(url
, &buf
, HTTP_NO_CACHE
);
1018 while (i
< buf
.len
) {
1022 if (i
+ 52 <= buf
.len
&&
1023 !prefixcmp(data
+ i
, " pack-") &&
1024 !prefixcmp(data
+ i
+ 46, ".pack\n")) {
1025 get_sha1_hex(data
+ i
+ 6, sha1
);
1026 fetch_and_setup_pack_index(packs_head
, sha1
,
1032 while (i
< buf
.len
&& data
[i
] != '\n')
1043 void release_http_pack_request(struct http_pack_request
*preq
)
1045 if (preq
->packfile
!= NULL
) {
1046 fclose(preq
->packfile
);
1047 preq
->packfile
= NULL
;
1049 if (preq
->range_header
!= NULL
) {
1050 curl_slist_free_all(preq
->range_header
);
1051 preq
->range_header
= NULL
;
1057 int finish_http_pack_request(struct http_pack_request
*preq
)
1059 struct packed_git
**lst
;
1060 struct packed_git
*p
= preq
->target
;
1062 struct child_process ip
;
1063 const char *ip_argv
[8];
1065 close_pack_index(p
);
1067 fclose(preq
->packfile
);
1068 preq
->packfile
= NULL
;
1072 lst
= &((*lst
)->next
);
1073 *lst
= (*lst
)->next
;
1075 tmp_idx
= xstrdup(preq
->tmpfile
);
1076 strcpy(tmp_idx
+ strlen(tmp_idx
) - strlen(".pack.temp"),
1079 ip_argv
[0] = "index-pack";
1081 ip_argv
[2] = tmp_idx
;
1082 ip_argv
[3] = preq
->tmpfile
;
1085 memset(&ip
, 0, sizeof(ip
));
1091 if (run_command(&ip
)) {
1092 unlink(preq
->tmpfile
);
1098 unlink(sha1_pack_index_name(p
->sha1
));
1100 if (move_temp_to_file(preq
->tmpfile
, sha1_pack_name(p
->sha1
))
1101 || move_temp_to_file(tmp_idx
, sha1_pack_index_name(p
->sha1
))) {
1106 install_packed_git(p
);
1111 struct http_pack_request
*new_http_pack_request(
1112 struct packed_git
*target
, const char *base_url
)
1115 char range
[RANGE_HEADER_SIZE
];
1116 struct strbuf buf
= STRBUF_INIT
;
1117 struct http_pack_request
*preq
;
1119 preq
= xcalloc(1, sizeof(*preq
));
1120 preq
->target
= target
;
1122 end_url_with_slash(&buf
, base_url
);
1123 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1124 sha1_to_hex(target
->sha1
));
1125 preq
->url
= strbuf_detach(&buf
, NULL
);
1127 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp",
1128 sha1_pack_name(target
->sha1
));
1129 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1130 if (!preq
->packfile
) {
1131 error("Unable to open local file %s for pack",
1136 preq
->slot
= get_active_slot();
1137 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1138 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1139 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1140 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1144 * If there is data present from a previous transfer attempt,
1145 * resume where it left off
1147 prev_posn
= ftell(preq
->packfile
);
1149 if (http_is_verbose
)
1151 "Resuming fetch of pack %s at byte %ld\n",
1152 sha1_to_hex(target
->sha1
), prev_posn
);
1153 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1154 preq
->range_header
= curl_slist_append(NULL
, range
);
1155 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1156 preq
->range_header
);
1167 /* Helpers for fetching objects (loose) */
1168 static size_t fwrite_sha1_file(char *ptr
, size_t eltsize
, size_t nmemb
,
1171 unsigned char expn
[4096];
1172 size_t size
= eltsize
* nmemb
;
1174 struct http_object_request
*freq
=
1175 (struct http_object_request
*)data
;
1177 ssize_t retval
= xwrite(freq
->localfile
,
1178 (char *) ptr
+ posn
, size
- posn
);
1182 } while (posn
< size
);
1184 freq
->stream
.avail_in
= size
;
1185 freq
->stream
.next_in
= (void *)ptr
;
1187 freq
->stream
.next_out
= expn
;
1188 freq
->stream
.avail_out
= sizeof(expn
);
1189 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1190 git_SHA1_Update(&freq
->c
, expn
,
1191 sizeof(expn
) - freq
->stream
.avail_out
);
1192 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1196 struct http_object_request
*new_http_object_request(const char *base_url
,
1197 unsigned char *sha1
)
1199 char *hex
= sha1_to_hex(sha1
);
1201 char prevfile
[PATH_MAX
];
1203 char prev_buf
[PREV_BUF_SIZE
];
1204 ssize_t prev_read
= 0;
1206 char range
[RANGE_HEADER_SIZE
];
1207 struct curl_slist
*range_header
= NULL
;
1208 struct http_object_request
*freq
;
1210 freq
= xcalloc(1, sizeof(*freq
));
1211 hashcpy(freq
->sha1
, sha1
);
1212 freq
->localfile
= -1;
1214 filename
= sha1_file_name(sha1
);
1215 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1216 "%s.temp", filename
);
1218 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1219 unlink_or_warn(prevfile
);
1220 rename(freq
->tmpfile
, prevfile
);
1221 unlink_or_warn(freq
->tmpfile
);
1223 if (freq
->localfile
!= -1)
1224 error("fd leakage in start: %d", freq
->localfile
);
1225 freq
->localfile
= open(freq
->tmpfile
,
1226 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1228 * This could have failed due to the "lazy directory creation";
1229 * try to mkdir the last path component.
1231 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1232 char *dir
= strrchr(freq
->tmpfile
, '/');
1235 mkdir(freq
->tmpfile
, 0777);
1238 freq
->localfile
= open(freq
->tmpfile
,
1239 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1242 if (freq
->localfile
< 0) {
1243 error("Couldn't create temporary file %s: %s",
1244 freq
->tmpfile
, strerror(errno
));
1248 git_inflate_init(&freq
->stream
);
1250 git_SHA1_Init(&freq
->c
);
1252 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1255 * If a previous temp file is present, process what was already
1258 prevlocal
= open(prevfile
, O_RDONLY
);
1259 if (prevlocal
!= -1) {
1261 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1263 if (fwrite_sha1_file(prev_buf
,
1266 freq
) == prev_read
) {
1267 prev_posn
+= prev_read
;
1272 } while (prev_read
> 0);
1275 unlink_or_warn(prevfile
);
1278 * Reset inflate/SHA1 if there was an error reading the previous temp
1279 * file; also rewind to the beginning of the local file.
1281 if (prev_read
== -1) {
1282 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1283 git_inflate_init(&freq
->stream
);
1284 git_SHA1_Init(&freq
->c
);
1287 lseek(freq
->localfile
, 0, SEEK_SET
);
1288 if (ftruncate(freq
->localfile
, 0) < 0) {
1289 error("Couldn't truncate temporary file %s: %s",
1290 freq
->tmpfile
, strerror(errno
));
1296 freq
->slot
= get_active_slot();
1298 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1299 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1300 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1301 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1302 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1305 * If we have successfully processed data from a previous fetch
1306 * attempt, only fetch the data we don't already have.
1309 if (http_is_verbose
)
1311 "Resuming fetch of object %s at byte %ld\n",
1313 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1314 range_header
= curl_slist_append(range_header
, range
);
1315 curl_easy_setopt(freq
->slot
->curl
,
1316 CURLOPT_HTTPHEADER
, range_header
);
1327 void process_http_object_request(struct http_object_request
*freq
)
1329 if (freq
->slot
== NULL
)
1331 freq
->curl_result
= freq
->slot
->curl_result
;
1332 freq
->http_code
= freq
->slot
->http_code
;
1336 int finish_http_object_request(struct http_object_request
*freq
)
1340 close(freq
->localfile
);
1341 freq
->localfile
= -1;
1343 process_http_object_request(freq
);
1345 if (freq
->http_code
== 416) {
1346 warning("requested range invalid; we may already have all the data.");
1347 } else if (freq
->curl_result
!= CURLE_OK
) {
1348 if (stat(freq
->tmpfile
, &st
) == 0)
1349 if (st
.st_size
== 0)
1350 unlink_or_warn(freq
->tmpfile
);
1354 git_inflate_end(&freq
->stream
);
1355 git_SHA1_Final(freq
->real_sha1
, &freq
->c
);
1356 if (freq
->zret
!= Z_STREAM_END
) {
1357 unlink_or_warn(freq
->tmpfile
);
1360 if (hashcmp(freq
->sha1
, freq
->real_sha1
)) {
1361 unlink_or_warn(freq
->tmpfile
);
1365 move_temp_to_file(freq
->tmpfile
, sha1_file_name(freq
->sha1
));
1367 return freq
->rename
;
1370 void abort_http_object_request(struct http_object_request
*freq
)
1372 unlink_or_warn(freq
->tmpfile
);
1374 release_http_object_request(freq
);
1377 void release_http_object_request(struct http_object_request
*freq
)
1379 if (freq
->localfile
!= -1) {
1380 close(freq
->localfile
);
1381 freq
->localfile
= -1;
1383 if (freq
->url
!= NULL
) {
1387 if (freq
->slot
!= NULL
) {
1388 freq
->slot
->callback_func
= NULL
;
1389 freq
->slot
->callback_data
= NULL
;
1390 release_active_slot(freq
->slot
);