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 http_options(const char *var
, const char *value
, void *cb
)
145 if (!strcmp("http.sslverify", var
)) {
146 curl_ssl_verify
= git_config_bool(var
, value
);
149 if (!strcmp("http.sslcert", var
))
150 return git_config_string(&ssl_cert
, var
, value
);
151 #if LIBCURL_VERSION_NUM >= 0x070903
152 if (!strcmp("http.sslkey", var
))
153 return git_config_string(&ssl_key
, var
, value
);
155 #if LIBCURL_VERSION_NUM >= 0x070908
156 if (!strcmp("http.sslcapath", var
))
157 return git_config_string(&ssl_capath
, var
, value
);
159 if (!strcmp("http.sslcainfo", var
))
160 return git_config_string(&ssl_cainfo
, var
, value
);
161 if (!strcmp("http.sslcertpasswordprotected", var
)) {
162 if (git_config_bool(var
, value
))
163 ssl_cert_password_required
= 1;
166 if (!strcmp("http.minsessions", var
)) {
167 min_curl_sessions
= git_config_int(var
, value
);
168 #ifndef USE_CURL_MULTI
169 if (min_curl_sessions
> 1)
170 min_curl_sessions
= 1;
174 #ifdef USE_CURL_MULTI
175 if (!strcmp("http.maxrequests", var
)) {
176 max_requests
= git_config_int(var
, value
);
180 if (!strcmp("http.lowspeedlimit", var
)) {
181 curl_low_speed_limit
= (long)git_config_int(var
, value
);
184 if (!strcmp("http.lowspeedtime", var
)) {
185 curl_low_speed_time
= (long)git_config_int(var
, value
);
189 if (!strcmp("http.noepsv", var
)) {
190 curl_ftp_no_epsv
= git_config_bool(var
, value
);
193 if (!strcmp("http.proxy", var
))
194 return git_config_string(&curl_http_proxy
, var
, value
);
196 if (!strcmp("http.cookiefile", var
))
197 return git_config_string(&curl_cookie_file
, var
, value
);
199 if (!strcmp("http.postbuffer", var
)) {
200 http_post_buffer
= git_config_int(var
, value
);
201 if (http_post_buffer
< LARGE_PACKET_MAX
)
202 http_post_buffer
= LARGE_PACKET_MAX
;
206 if (!strcmp("http.useragent", var
))
207 return git_config_string(&user_agent
, var
, value
);
209 /* Fall back on the default ones */
210 return git_default_config(var
, value
, cb
);
213 static void init_curl_http_auth(CURL
*result
)
215 if (!http_auth
.username
)
218 credential_fill(&http_auth
);
220 #if LIBCURL_VERSION_NUM >= 0x071301
221 curl_easy_setopt(result
, CURLOPT_USERNAME
, http_auth
.username
);
222 curl_easy_setopt(result
, CURLOPT_PASSWORD
, http_auth
.password
);
225 static struct strbuf up
= STRBUF_INIT
;
227 strbuf_addf(&up
, "%s:%s",
228 http_auth
.username
, http_auth
.password
);
229 curl_easy_setopt(result
, CURLOPT_USERPWD
, up
.buf
);
234 static int has_cert_password(void)
236 if (ssl_cert
== NULL
|| ssl_cert_password_required
!= 1)
238 if (!cert_auth
.password
) {
239 cert_auth
.protocol
= xstrdup("cert");
240 cert_auth
.username
= xstrdup("");
241 cert_auth
.path
= xstrdup(ssl_cert
);
242 credential_fill(&cert_auth
);
247 static CURL
*get_curl_handle(void)
249 CURL
*result
= curl_easy_init();
251 if (!curl_ssl_verify
) {
252 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 0);
253 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 0);
255 /* Verify authenticity of the peer's certificate */
256 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 1);
257 /* The name in the cert must match whom we tried to connect */
258 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 2);
261 #if LIBCURL_VERSION_NUM >= 0x070907
262 curl_easy_setopt(result
, CURLOPT_NETRC
, CURL_NETRC_OPTIONAL
);
264 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
265 curl_easy_setopt(result
, CURLOPT_HTTPAUTH
, CURLAUTH_ANY
);
268 if (http_proactive_auth
)
269 init_curl_http_auth(result
);
271 if (ssl_cert
!= NULL
)
272 curl_easy_setopt(result
, CURLOPT_SSLCERT
, ssl_cert
);
273 if (has_cert_password())
274 curl_easy_setopt(result
, CURLOPT_KEYPASSWD
, cert_auth
.password
);
275 #if LIBCURL_VERSION_NUM >= 0x070903
277 curl_easy_setopt(result
, CURLOPT_SSLKEY
, ssl_key
);
279 #if LIBCURL_VERSION_NUM >= 0x070908
280 if (ssl_capath
!= NULL
)
281 curl_easy_setopt(result
, CURLOPT_CAPATH
, ssl_capath
);
283 if (ssl_cainfo
!= NULL
)
284 curl_easy_setopt(result
, CURLOPT_CAINFO
, ssl_cainfo
);
285 curl_easy_setopt(result
, CURLOPT_FAILONERROR
, 1);
287 if (curl_low_speed_limit
> 0 && curl_low_speed_time
> 0) {
288 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_LIMIT
,
289 curl_low_speed_limit
);
290 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_TIME
,
291 curl_low_speed_time
);
294 curl_easy_setopt(result
, CURLOPT_FOLLOWLOCATION
, 1);
295 #if LIBCURL_VERSION_NUM >= 0x071301
296 curl_easy_setopt(result
, CURLOPT_POSTREDIR
, CURL_REDIR_POST_ALL
);
297 #elif LIBCURL_VERSION_NUM >= 0x071101
298 curl_easy_setopt(result
, CURLOPT_POST301
, 1);
301 if (getenv("GIT_CURL_VERBOSE"))
302 curl_easy_setopt(result
, CURLOPT_VERBOSE
, 1);
304 curl_easy_setopt(result
, CURLOPT_USERAGENT
,
305 user_agent
? user_agent
: git_user_agent());
307 if (curl_ftp_no_epsv
)
308 curl_easy_setopt(result
, CURLOPT_FTP_USE_EPSV
, 0);
310 if (curl_http_proxy
) {
311 curl_easy_setopt(result
, CURLOPT_PROXY
, curl_http_proxy
);
312 curl_easy_setopt(result
, CURLOPT_PROXYAUTH
, CURLAUTH_ANY
);
318 static void set_from_env(const char **var
, const char *envname
)
320 const char *val
= getenv(envname
);
325 void http_init(struct remote
*remote
, const char *url
, int proactive_auth
)
327 char *low_speed_limit
;
328 char *low_speed_time
;
332 git_config(http_options
, NULL
);
334 curl_global_init(CURL_GLOBAL_ALL
);
336 http_proactive_auth
= proactive_auth
;
338 if (remote
&& remote
->http_proxy
)
339 curl_http_proxy
= xstrdup(remote
->http_proxy
);
341 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
342 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
344 #ifdef USE_CURL_MULTI
346 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
347 if (http_max_requests
!= NULL
)
348 max_requests
= atoi(http_max_requests
);
351 curlm
= curl_multi_init();
353 fprintf(stderr
, "Error creating curl multi handle.\n");
358 if (getenv("GIT_SSL_NO_VERIFY"))
361 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
362 #if LIBCURL_VERSION_NUM >= 0x070903
363 set_from_env(&ssl_key
, "GIT_SSL_KEY");
365 #if LIBCURL_VERSION_NUM >= 0x070908
366 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
368 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
370 set_from_env(&user_agent
, "GIT_HTTP_USER_AGENT");
372 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
373 if (low_speed_limit
!= NULL
)
374 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
375 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
376 if (low_speed_time
!= NULL
)
377 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
379 if (curl_ssl_verify
== -1)
382 curl_session_count
= 0;
383 #ifdef USE_CURL_MULTI
384 if (max_requests
< 1)
385 max_requests
= DEFAULT_MAX_REQUESTS
;
388 if (getenv("GIT_CURL_FTP_NO_EPSV"))
389 curl_ftp_no_epsv
= 1;
392 credential_from_url(&http_auth
, url
);
393 if (!ssl_cert_password_required
&&
394 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
395 !prefixcmp(url
, "https://"))
396 ssl_cert_password_required
= 1;
399 #ifndef NO_CURL_EASY_DUPHANDLE
400 curl_default
= get_curl_handle();
404 void http_cleanup(void)
406 struct active_request_slot
*slot
= active_queue_head
;
408 while (slot
!= NULL
) {
409 struct active_request_slot
*next
= slot
->next
;
410 if (slot
->curl
!= NULL
) {
411 #ifdef USE_CURL_MULTI
412 curl_multi_remove_handle(curlm
, slot
->curl
);
414 curl_easy_cleanup(slot
->curl
);
419 active_queue_head
= NULL
;
421 #ifndef NO_CURL_EASY_DUPHANDLE
422 curl_easy_cleanup(curl_default
);
425 #ifdef USE_CURL_MULTI
426 curl_multi_cleanup(curlm
);
428 curl_global_cleanup();
430 curl_slist_free_all(pragma_header
);
431 pragma_header
= NULL
;
433 curl_slist_free_all(no_pragma_header
);
434 no_pragma_header
= NULL
;
436 if (curl_http_proxy
) {
437 free((void *)curl_http_proxy
);
438 curl_http_proxy
= NULL
;
441 if (cert_auth
.password
!= NULL
) {
442 memset(cert_auth
.password
, 0, strlen(cert_auth
.password
));
443 free(cert_auth
.password
);
444 cert_auth
.password
= NULL
;
446 ssl_cert_password_required
= 0;
449 struct active_request_slot
*get_active_slot(void)
451 struct active_request_slot
*slot
= active_queue_head
;
452 struct active_request_slot
*newslot
;
454 #ifdef USE_CURL_MULTI
457 /* Wait for a slot to open up if the queue is full */
458 while (active_requests
>= max_requests
) {
459 curl_multi_perform(curlm
, &num_transfers
);
460 if (num_transfers
< active_requests
)
461 process_curl_messages();
465 while (slot
!= NULL
&& slot
->in_use
)
469 newslot
= xmalloc(sizeof(*newslot
));
470 newslot
->curl
= NULL
;
472 newslot
->next
= NULL
;
474 slot
= active_queue_head
;
476 active_queue_head
= newslot
;
478 while (slot
->next
!= NULL
)
480 slot
->next
= newslot
;
485 if (slot
->curl
== NULL
) {
486 #ifdef NO_CURL_EASY_DUPHANDLE
487 slot
->curl
= get_curl_handle();
489 slot
->curl
= curl_easy_duphandle(curl_default
);
491 curl_session_count
++;
496 slot
->results
= NULL
;
497 slot
->finished
= NULL
;
498 slot
->callback_data
= NULL
;
499 slot
->callback_func
= NULL
;
500 curl_easy_setopt(slot
->curl
, CURLOPT_COOKIEFILE
, curl_cookie_file
);
501 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
502 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
503 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
504 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
505 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
506 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, NULL
);
507 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
508 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
509 if (http_auth
.password
)
510 init_curl_http_auth(slot
->curl
);
515 int start_active_slot(struct active_request_slot
*slot
)
517 #ifdef USE_CURL_MULTI
518 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
521 if (curlm_result
!= CURLM_OK
&&
522 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
529 * We know there must be something to do, since we just added
532 curl_multi_perform(curlm
, &num_transfers
);
537 #ifdef USE_CURL_MULTI
541 struct fill_chain
*next
;
544 static struct fill_chain
*fill_cfg
;
546 void add_fill_function(void *data
, int (*fill
)(void *))
548 struct fill_chain
*new = xmalloc(sizeof(*new));
549 struct fill_chain
**linkp
= &fill_cfg
;
554 linkp
= &(*linkp
)->next
;
558 void fill_active_slots(void)
560 struct active_request_slot
*slot
= active_queue_head
;
562 while (active_requests
< max_requests
) {
563 struct fill_chain
*fill
;
564 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
565 if (fill
->fill(fill
->data
))
572 while (slot
!= NULL
) {
573 if (!slot
->in_use
&& slot
->curl
!= NULL
574 && curl_session_count
> min_curl_sessions
) {
575 curl_easy_cleanup(slot
->curl
);
577 curl_session_count
--;
583 void step_active_slots(void)
586 CURLMcode curlm_result
;
589 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
590 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
591 if (num_transfers
< active_requests
) {
592 process_curl_messages();
598 void run_active_slot(struct active_request_slot
*slot
)
600 #ifdef USE_CURL_MULTI
605 struct timeval select_timeout
;
608 slot
->finished
= &finished
;
613 #if LIBCURL_VERSION_NUM >= 0x070f04
615 curl_multi_timeout(curlm
, &curl_timeout
);
616 if (curl_timeout
== 0) {
618 } else if (curl_timeout
== -1) {
619 select_timeout
.tv_sec
= 0;
620 select_timeout
.tv_usec
= 50000;
622 select_timeout
.tv_sec
= curl_timeout
/ 1000;
623 select_timeout
.tv_usec
= (curl_timeout
% 1000) * 1000;
626 select_timeout
.tv_sec
= 0;
627 select_timeout
.tv_usec
= 50000;
634 curl_multi_fdset(curlm
, &readfds
, &writefds
, &excfds
, &max_fd
);
637 * It can happen that curl_multi_timeout returns a pathologically
638 * long timeout when curl_multi_fdset returns no file descriptors
639 * to read. See commit message for more details.
642 (select_timeout
.tv_sec
> 0 ||
643 select_timeout
.tv_usec
> 50000)) {
644 select_timeout
.tv_sec
= 0;
645 select_timeout
.tv_usec
= 50000;
648 select(max_fd
+1, &readfds
, &writefds
, &excfds
, &select_timeout
);
652 while (slot
->in_use
) {
653 slot
->curl_result
= curl_easy_perform(slot
->curl
);
654 finish_active_slot(slot
);
659 static void closedown_active_slot(struct active_request_slot
*slot
)
665 static void release_active_slot(struct active_request_slot
*slot
)
667 closedown_active_slot(slot
);
668 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
669 #ifdef USE_CURL_MULTI
670 curl_multi_remove_handle(curlm
, slot
->curl
);
672 curl_easy_cleanup(slot
->curl
);
674 curl_session_count
--;
676 #ifdef USE_CURL_MULTI
681 void finish_active_slot(struct active_request_slot
*slot
)
683 closedown_active_slot(slot
);
684 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CODE
, &slot
->http_code
);
686 if (slot
->finished
!= NULL
)
687 (*slot
->finished
) = 1;
689 /* Store slot results so they can be read after the slot is reused */
690 if (slot
->results
!= NULL
) {
691 slot
->results
->curl_result
= slot
->curl_result
;
692 slot
->results
->http_code
= slot
->http_code
;
695 /* Run callback if appropriate */
696 if (slot
->callback_func
!= NULL
)
697 slot
->callback_func(slot
->callback_data
);
700 void finish_all_active_slots(void)
702 struct active_request_slot
*slot
= active_queue_head
;
706 run_active_slot(slot
);
707 slot
= active_queue_head
;
713 /* Helpers for modifying and creating URLs */
714 static inline int needs_quote(int ch
)
716 if (((ch
>= 'A') && (ch
<= 'Z'))
717 || ((ch
>= 'a') && (ch
<= 'z'))
718 || ((ch
>= '0') && (ch
<= '9'))
726 static char *quote_ref_url(const char *base
, const char *ref
)
728 struct strbuf buf
= STRBUF_INIT
;
732 end_url_with_slash(&buf
, base
);
734 for (cp
= ref
; (ch
= *cp
) != 0; cp
++)
736 strbuf_addf(&buf
, "%%%02x", ch
);
738 strbuf_addch(&buf
, *cp
);
740 return strbuf_detach(&buf
, NULL
);
743 void append_remote_object_url(struct strbuf
*buf
, const char *url
,
745 int only_two_digit_prefix
)
747 end_url_with_slash(buf
, url
);
749 strbuf_addf(buf
, "objects/%.*s/", 2, hex
);
750 if (!only_two_digit_prefix
)
751 strbuf_addf(buf
, "%s", hex
+2);
754 char *get_remote_object_url(const char *url
, const char *hex
,
755 int only_two_digit_prefix
)
757 struct strbuf buf
= STRBUF_INIT
;
758 append_remote_object_url(&buf
, url
, hex
, only_two_digit_prefix
);
759 return strbuf_detach(&buf
, NULL
);
762 int handle_curl_result(struct slot_results
*results
)
764 if (results
->curl_result
== CURLE_OK
) {
765 credential_approve(&http_auth
);
767 } else if (missing_target(results
))
768 return HTTP_MISSING_TARGET
;
769 else if (results
->http_code
== 401) {
770 if (http_auth
.username
&& http_auth
.password
) {
771 credential_reject(&http_auth
);
774 credential_fill(&http_auth
);
778 #if LIBCURL_VERSION_NUM >= 0x070c00
779 if (!curl_errorstr
[0])
780 strlcpy(curl_errorstr
,
781 curl_easy_strerror(results
->curl_result
),
782 sizeof(curl_errorstr
));
788 /* http_request() targets */
789 #define HTTP_REQUEST_STRBUF 0
790 #define HTTP_REQUEST_FILE 1
792 static int http_request(const char *url
, struct strbuf
*type
,
793 void *result
, int target
, int options
)
795 struct active_request_slot
*slot
;
796 struct slot_results results
;
797 struct curl_slist
*headers
= NULL
;
798 struct strbuf buf
= STRBUF_INIT
;
801 slot
= get_active_slot();
802 slot
->results
= &results
;
803 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
805 if (result
== NULL
) {
806 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 1);
808 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
809 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, result
);
811 if (target
== HTTP_REQUEST_FILE
) {
812 long posn
= ftell(result
);
813 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
816 strbuf_addf(&buf
, "Range: bytes=%ld-", posn
);
817 headers
= curl_slist_append(headers
, buf
.buf
);
821 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
825 strbuf_addstr(&buf
, "Pragma:");
826 if (options
& HTTP_NO_CACHE
)
827 strbuf_addstr(&buf
, " no-cache");
829 headers
= curl_slist_append(headers
, buf
.buf
);
831 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, url
);
832 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
833 curl_easy_setopt(slot
->curl
, CURLOPT_ENCODING
, "gzip");
835 if (start_active_slot(slot
)) {
836 run_active_slot(slot
);
837 ret
= handle_curl_result(&results
);
839 error("Unable to start HTTP request for %s", url
);
840 ret
= HTTP_START_FAILED
;
846 curl_easy_getinfo(slot
->curl
, CURLINFO_CONTENT_TYPE
, &t
);
848 strbuf_addstr(type
, t
);
851 curl_slist_free_all(headers
);
852 strbuf_release(&buf
);
857 static int http_request_reauth(const char *url
,
859 void *result
, int target
,
862 int ret
= http_request(url
, type
, result
, target
, options
);
863 if (ret
!= HTTP_REAUTH
)
865 return http_request(url
, type
, result
, target
, options
);
868 int http_get_strbuf(const char *url
,
870 struct strbuf
*result
, int options
)
872 return http_request_reauth(url
, type
, result
,
873 HTTP_REQUEST_STRBUF
, options
);
877 * Downloads a URL and stores the result in the given file.
879 * If a previous interrupted download is detected (i.e. a previous temporary
880 * file is still around) the download is resumed.
882 static int http_get_file(const char *url
, const char *filename
, int options
)
885 struct strbuf tmpfile
= STRBUF_INIT
;
888 strbuf_addf(&tmpfile
, "%s.temp", filename
);
889 result
= fopen(tmpfile
.buf
, "a");
891 error("Unable to open local file %s", tmpfile
.buf
);
896 ret
= http_request_reauth(url
, NULL
, result
, HTTP_REQUEST_FILE
, options
);
899 if ((ret
== HTTP_OK
) && move_temp_to_file(tmpfile
.buf
, filename
))
902 strbuf_release(&tmpfile
);
906 int http_error(const char *url
, int ret
)
908 /* http_request has already handled HTTP_START_FAILED. */
909 if (ret
!= HTTP_START_FAILED
)
910 error("%s while accessing %s", curl_errorstr
, url
);
915 int http_fetch_ref(const char *base
, struct ref
*ref
)
918 struct strbuf buffer
= STRBUF_INIT
;
921 url
= quote_ref_url(base
, ref
->name
);
922 if (http_get_strbuf(url
, NULL
, &buffer
, HTTP_NO_CACHE
) == HTTP_OK
) {
923 strbuf_rtrim(&buffer
);
924 if (buffer
.len
== 40)
925 ret
= get_sha1_hex(buffer
.buf
, ref
->old_sha1
);
926 else if (!prefixcmp(buffer
.buf
, "ref: ")) {
927 ref
->symref
= xstrdup(buffer
.buf
+ 5);
932 strbuf_release(&buffer
);
937 /* Helpers for fetching packs */
938 static char *fetch_pack_index(unsigned char *sha1
, const char *base_url
)
941 struct strbuf buf
= STRBUF_INIT
;
944 fprintf(stderr
, "Getting index for pack %s\n", sha1_to_hex(sha1
));
946 end_url_with_slash(&buf
, base_url
);
947 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", sha1_to_hex(sha1
));
948 url
= strbuf_detach(&buf
, NULL
);
950 strbuf_addf(&buf
, "%s.temp", sha1_pack_index_name(sha1
));
951 tmp
= strbuf_detach(&buf
, NULL
);
953 if (http_get_file(url
, tmp
, 0) != HTTP_OK
) {
954 error("Unable to get pack index %s", url
);
963 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
964 unsigned char *sha1
, const char *base_url
)
966 struct packed_git
*new_pack
;
967 char *tmp_idx
= NULL
;
970 if (has_pack_index(sha1
)) {
971 new_pack
= parse_pack_index(sha1
, NULL
);
973 return -1; /* parse_pack_index() already issued error message */
977 tmp_idx
= fetch_pack_index(sha1
, base_url
);
981 new_pack
= parse_pack_index(sha1
, tmp_idx
);
986 return -1; /* parse_pack_index() already issued error message */
989 ret
= verify_pack_index(new_pack
);
991 close_pack_index(new_pack
);
992 ret
= move_temp_to_file(tmp_idx
, sha1_pack_index_name(sha1
));
999 new_pack
->next
= *packs_head
;
1000 *packs_head
= new_pack
;
1004 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
1008 struct strbuf buf
= STRBUF_INIT
;
1009 unsigned char sha1
[20];
1011 end_url_with_slash(&buf
, base_url
);
1012 strbuf_addstr(&buf
, "objects/info/packs");
1013 url
= strbuf_detach(&buf
, NULL
);
1015 ret
= http_get_strbuf(url
, NULL
, &buf
, HTTP_NO_CACHE
);
1020 while (i
< buf
.len
) {
1024 if (i
+ 52 <= buf
.len
&&
1025 !prefixcmp(data
+ i
, " pack-") &&
1026 !prefixcmp(data
+ i
+ 46, ".pack\n")) {
1027 get_sha1_hex(data
+ i
+ 6, sha1
);
1028 fetch_and_setup_pack_index(packs_head
, sha1
,
1034 while (i
< buf
.len
&& data
[i
] != '\n')
1045 void release_http_pack_request(struct http_pack_request
*preq
)
1047 if (preq
->packfile
!= NULL
) {
1048 fclose(preq
->packfile
);
1049 preq
->packfile
= NULL
;
1051 if (preq
->range_header
!= NULL
) {
1052 curl_slist_free_all(preq
->range_header
);
1053 preq
->range_header
= NULL
;
1059 int finish_http_pack_request(struct http_pack_request
*preq
)
1061 struct packed_git
**lst
;
1062 struct packed_git
*p
= preq
->target
;
1064 struct child_process ip
;
1065 const char *ip_argv
[8];
1067 close_pack_index(p
);
1069 fclose(preq
->packfile
);
1070 preq
->packfile
= NULL
;
1074 lst
= &((*lst
)->next
);
1075 *lst
= (*lst
)->next
;
1077 tmp_idx
= xstrdup(preq
->tmpfile
);
1078 strcpy(tmp_idx
+ strlen(tmp_idx
) - strlen(".pack.temp"),
1081 ip_argv
[0] = "index-pack";
1083 ip_argv
[2] = tmp_idx
;
1084 ip_argv
[3] = preq
->tmpfile
;
1087 memset(&ip
, 0, sizeof(ip
));
1093 if (run_command(&ip
)) {
1094 unlink(preq
->tmpfile
);
1100 unlink(sha1_pack_index_name(p
->sha1
));
1102 if (move_temp_to_file(preq
->tmpfile
, sha1_pack_name(p
->sha1
))
1103 || move_temp_to_file(tmp_idx
, sha1_pack_index_name(p
->sha1
))) {
1108 install_packed_git(p
);
1113 struct http_pack_request
*new_http_pack_request(
1114 struct packed_git
*target
, const char *base_url
)
1117 char range
[RANGE_HEADER_SIZE
];
1118 struct strbuf buf
= STRBUF_INIT
;
1119 struct http_pack_request
*preq
;
1121 preq
= xcalloc(1, sizeof(*preq
));
1122 preq
->target
= target
;
1124 end_url_with_slash(&buf
, base_url
);
1125 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1126 sha1_to_hex(target
->sha1
));
1127 preq
->url
= strbuf_detach(&buf
, NULL
);
1129 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp",
1130 sha1_pack_name(target
->sha1
));
1131 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1132 if (!preq
->packfile
) {
1133 error("Unable to open local file %s for pack",
1138 preq
->slot
= get_active_slot();
1139 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1140 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1141 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1142 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1146 * If there is data present from a previous transfer attempt,
1147 * resume where it left off
1149 prev_posn
= ftell(preq
->packfile
);
1151 if (http_is_verbose
)
1153 "Resuming fetch of pack %s at byte %ld\n",
1154 sha1_to_hex(target
->sha1
), prev_posn
);
1155 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1156 preq
->range_header
= curl_slist_append(NULL
, range
);
1157 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1158 preq
->range_header
);
1169 /* Helpers for fetching objects (loose) */
1170 static size_t fwrite_sha1_file(char *ptr
, size_t eltsize
, size_t nmemb
,
1173 unsigned char expn
[4096];
1174 size_t size
= eltsize
* nmemb
;
1176 struct http_object_request
*freq
=
1177 (struct http_object_request
*)data
;
1179 ssize_t retval
= xwrite(freq
->localfile
,
1180 (char *) ptr
+ posn
, size
- posn
);
1184 } while (posn
< size
);
1186 freq
->stream
.avail_in
= size
;
1187 freq
->stream
.next_in
= (void *)ptr
;
1189 freq
->stream
.next_out
= expn
;
1190 freq
->stream
.avail_out
= sizeof(expn
);
1191 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1192 git_SHA1_Update(&freq
->c
, expn
,
1193 sizeof(expn
) - freq
->stream
.avail_out
);
1194 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1198 struct http_object_request
*new_http_object_request(const char *base_url
,
1199 unsigned char *sha1
)
1201 char *hex
= sha1_to_hex(sha1
);
1203 char prevfile
[PATH_MAX
];
1205 char prev_buf
[PREV_BUF_SIZE
];
1206 ssize_t prev_read
= 0;
1208 char range
[RANGE_HEADER_SIZE
];
1209 struct curl_slist
*range_header
= NULL
;
1210 struct http_object_request
*freq
;
1212 freq
= xcalloc(1, sizeof(*freq
));
1213 hashcpy(freq
->sha1
, sha1
);
1214 freq
->localfile
= -1;
1216 filename
= sha1_file_name(sha1
);
1217 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1218 "%s.temp", filename
);
1220 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1221 unlink_or_warn(prevfile
);
1222 rename(freq
->tmpfile
, prevfile
);
1223 unlink_or_warn(freq
->tmpfile
);
1225 if (freq
->localfile
!= -1)
1226 error("fd leakage in start: %d", freq
->localfile
);
1227 freq
->localfile
= open(freq
->tmpfile
,
1228 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1230 * This could have failed due to the "lazy directory creation";
1231 * try to mkdir the last path component.
1233 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1234 char *dir
= strrchr(freq
->tmpfile
, '/');
1237 mkdir(freq
->tmpfile
, 0777);
1240 freq
->localfile
= open(freq
->tmpfile
,
1241 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1244 if (freq
->localfile
< 0) {
1245 error("Couldn't create temporary file %s: %s",
1246 freq
->tmpfile
, strerror(errno
));
1250 git_inflate_init(&freq
->stream
);
1252 git_SHA1_Init(&freq
->c
);
1254 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1257 * If a previous temp file is present, process what was already
1260 prevlocal
= open(prevfile
, O_RDONLY
);
1261 if (prevlocal
!= -1) {
1263 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1265 if (fwrite_sha1_file(prev_buf
,
1268 freq
) == prev_read
) {
1269 prev_posn
+= prev_read
;
1274 } while (prev_read
> 0);
1277 unlink_or_warn(prevfile
);
1280 * Reset inflate/SHA1 if there was an error reading the previous temp
1281 * file; also rewind to the beginning of the local file.
1283 if (prev_read
== -1) {
1284 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1285 git_inflate_init(&freq
->stream
);
1286 git_SHA1_Init(&freq
->c
);
1289 lseek(freq
->localfile
, 0, SEEK_SET
);
1290 if (ftruncate(freq
->localfile
, 0) < 0) {
1291 error("Couldn't truncate temporary file %s: %s",
1292 freq
->tmpfile
, strerror(errno
));
1298 freq
->slot
= get_active_slot();
1300 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1301 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1302 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1303 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1304 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1307 * If we have successfully processed data from a previous fetch
1308 * attempt, only fetch the data we don't already have.
1311 if (http_is_verbose
)
1313 "Resuming fetch of object %s at byte %ld\n",
1315 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1316 range_header
= curl_slist_append(range_header
, range
);
1317 curl_easy_setopt(freq
->slot
->curl
,
1318 CURLOPT_HTTPHEADER
, range_header
);
1329 void process_http_object_request(struct http_object_request
*freq
)
1331 if (freq
->slot
== NULL
)
1333 freq
->curl_result
= freq
->slot
->curl_result
;
1334 freq
->http_code
= freq
->slot
->http_code
;
1338 int finish_http_object_request(struct http_object_request
*freq
)
1342 close(freq
->localfile
);
1343 freq
->localfile
= -1;
1345 process_http_object_request(freq
);
1347 if (freq
->http_code
== 416) {
1348 warning("requested range invalid; we may already have all the data.");
1349 } else if (freq
->curl_result
!= CURLE_OK
) {
1350 if (stat(freq
->tmpfile
, &st
) == 0)
1351 if (st
.st_size
== 0)
1352 unlink_or_warn(freq
->tmpfile
);
1356 git_inflate_end(&freq
->stream
);
1357 git_SHA1_Final(freq
->real_sha1
, &freq
->c
);
1358 if (freq
->zret
!= Z_STREAM_END
) {
1359 unlink_or_warn(freq
->tmpfile
);
1362 if (hashcmp(freq
->sha1
, freq
->real_sha1
)) {
1363 unlink_or_warn(freq
->tmpfile
);
1367 move_temp_to_file(freq
->tmpfile
, sha1_file_name(freq
->sha1
));
1369 return freq
->rename
;
1372 void abort_http_object_request(struct http_object_request
*freq
)
1374 unlink_or_warn(freq
->tmpfile
);
1376 release_http_object_request(freq
);
1379 void release_http_object_request(struct http_object_request
*freq
)
1381 if (freq
->localfile
!= -1) {
1382 close(freq
->localfile
);
1383 freq
->localfile
= -1;
1385 if (freq
->url
!= NULL
) {
1389 if (freq
->slot
!= NULL
) {
1390 freq
->slot
->callback_func
= NULL
;
1391 freq
->slot
->callback_data
= NULL
;
1392 release_active_slot(freq
->slot
);