4 #include "run-command.h"
6 #include "credential.h"
10 size_t http_post_buffer
= 16 * LARGE_PACKET_MAX
;
12 #if LIBCURL_VERSION_NUM >= 0x070a06
13 #define LIBCURL_CAN_HANDLE_AUTH_ANY
16 static int min_curl_sessions
= 1;
17 static int curl_session_count
;
19 static int max_requests
= -1;
22 #ifndef NO_CURL_EASY_DUPHANDLE
23 static CURL
*curl_default
;
26 #define PREV_BUF_SIZE 4096
27 #define RANGE_HEADER_SIZE 30
29 char curl_errorstr
[CURL_ERROR_SIZE
];
31 static int curl_ssl_verify
= -1;
32 static const char *ssl_cert
;
33 #if LIBCURL_VERSION_NUM >= 0x070903
34 static const char *ssl_key
;
36 #if LIBCURL_VERSION_NUM >= 0x070908
37 static const char *ssl_capath
;
39 static const char *ssl_cainfo
;
40 static long curl_low_speed_limit
= -1;
41 static long curl_low_speed_time
= -1;
42 static int curl_ftp_no_epsv
;
43 static const char *curl_http_proxy
;
44 static const char *curl_cookie_file
;
45 static struct credential http_auth
= CREDENTIAL_INIT
;
46 static int http_proactive_auth
;
47 static const char *user_agent
;
49 #if LIBCURL_VERSION_NUM >= 0x071700
50 /* Use CURLOPT_KEYPASSWD as is */
51 #elif LIBCURL_VERSION_NUM >= 0x070903
52 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
54 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
57 static struct credential cert_auth
= CREDENTIAL_INIT
;
58 static int ssl_cert_password_required
;
60 static struct curl_slist
*pragma_header
;
61 static struct curl_slist
*no_pragma_header
;
63 static struct active_request_slot
*active_queue_head
;
65 size_t fread_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
67 size_t size
= eltsize
* nmemb
;
68 struct buffer
*buffer
= buffer_
;
70 if (size
> buffer
->buf
.len
- buffer
->posn
)
71 size
= buffer
->buf
.len
- buffer
->posn
;
72 memcpy(ptr
, buffer
->buf
.buf
+ buffer
->posn
, size
);
79 curlioerr
ioctl_buffer(CURL
*handle
, int cmd
, void *clientp
)
81 struct buffer
*buffer
= clientp
;
87 case CURLIOCMD_RESTARTREAD
:
92 return CURLIOE_UNKNOWNCMD
;
97 size_t fwrite_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
99 size_t size
= eltsize
* nmemb
;
100 struct strbuf
*buffer
= buffer_
;
102 strbuf_add(buffer
, ptr
, size
);
106 size_t fwrite_null(char *ptr
, size_t eltsize
, size_t nmemb
, void *strbuf
)
108 return eltsize
* nmemb
;
111 #ifdef USE_CURL_MULTI
112 static void process_curl_messages(void)
115 struct active_request_slot
*slot
;
116 CURLMsg
*curl_message
= curl_multi_info_read(curlm
, &num_messages
);
118 while (curl_message
!= NULL
) {
119 if (curl_message
->msg
== CURLMSG_DONE
) {
120 int curl_result
= curl_message
->data
.result
;
121 slot
= active_queue_head
;
122 while (slot
!= NULL
&&
123 slot
->curl
!= curl_message
->easy_handle
)
126 curl_multi_remove_handle(curlm
, slot
->curl
);
127 slot
->curl_result
= curl_result
;
128 finish_active_slot(slot
);
130 fprintf(stderr
, "Received DONE message for unknown request!\n");
133 fprintf(stderr
, "Unknown CURL message received: %d\n",
134 (int)curl_message
->msg
);
136 curl_message
= curl_multi_info_read(curlm
, &num_messages
);
141 static int http_options(const char *var
, const char *value
, void *cb
)
143 if (!strcmp("http.sslverify", var
)) {
144 curl_ssl_verify
= git_config_bool(var
, value
);
147 if (!strcmp("http.sslcert", var
))
148 return git_config_string(&ssl_cert
, var
, value
);
149 #if LIBCURL_VERSION_NUM >= 0x070903
150 if (!strcmp("http.sslkey", var
))
151 return git_config_string(&ssl_key
, var
, value
);
153 #if LIBCURL_VERSION_NUM >= 0x070908
154 if (!strcmp("http.sslcapath", var
))
155 return git_config_string(&ssl_capath
, var
, value
);
157 if (!strcmp("http.sslcainfo", var
))
158 return git_config_string(&ssl_cainfo
, var
, value
);
159 if (!strcmp("http.sslcertpasswordprotected", var
)) {
160 if (git_config_bool(var
, value
))
161 ssl_cert_password_required
= 1;
164 if (!strcmp("http.minsessions", var
)) {
165 min_curl_sessions
= git_config_int(var
, value
);
166 #ifndef USE_CURL_MULTI
167 if (min_curl_sessions
> 1)
168 min_curl_sessions
= 1;
172 #ifdef USE_CURL_MULTI
173 if (!strcmp("http.maxrequests", var
)) {
174 max_requests
= git_config_int(var
, value
);
178 if (!strcmp("http.lowspeedlimit", var
)) {
179 curl_low_speed_limit
= (long)git_config_int(var
, value
);
182 if (!strcmp("http.lowspeedtime", var
)) {
183 curl_low_speed_time
= (long)git_config_int(var
, value
);
187 if (!strcmp("http.noepsv", var
)) {
188 curl_ftp_no_epsv
= git_config_bool(var
, value
);
191 if (!strcmp("http.proxy", var
))
192 return git_config_string(&curl_http_proxy
, var
, value
);
194 if (!strcmp("http.cookiefile", var
))
195 return git_config_string(&curl_cookie_file
, var
, value
);
197 if (!strcmp("http.postbuffer", var
)) {
198 http_post_buffer
= git_config_int(var
, value
);
199 if (http_post_buffer
< LARGE_PACKET_MAX
)
200 http_post_buffer
= LARGE_PACKET_MAX
;
204 if (!strcmp("http.useragent", var
))
205 return git_config_string(&user_agent
, var
, value
);
207 /* Fall back on the default ones */
208 return git_default_config(var
, value
, cb
);
211 static void init_curl_http_auth(CURL
*result
)
213 if (http_auth
.username
) {
214 struct strbuf up
= STRBUF_INIT
;
215 credential_fill(&http_auth
);
216 strbuf_addf(&up
, "%s:%s",
217 http_auth
.username
, http_auth
.password
);
218 curl_easy_setopt(result
, CURLOPT_USERPWD
,
219 strbuf_detach(&up
, NULL
));
223 static int has_cert_password(void)
225 if (ssl_cert
== NULL
|| ssl_cert_password_required
!= 1)
227 if (!cert_auth
.password
) {
228 cert_auth
.protocol
= xstrdup("cert");
229 cert_auth
.path
= xstrdup(ssl_cert
);
230 credential_fill(&cert_auth
);
235 static CURL
*get_curl_handle(void)
237 CURL
*result
= curl_easy_init();
239 if (!curl_ssl_verify
) {
240 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 0);
241 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 0);
243 /* Verify authenticity of the peer's certificate */
244 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 1);
245 /* The name in the cert must match whom we tried to connect */
246 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 2);
249 #if LIBCURL_VERSION_NUM >= 0x070907
250 curl_easy_setopt(result
, CURLOPT_NETRC
, CURL_NETRC_OPTIONAL
);
252 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
253 curl_easy_setopt(result
, CURLOPT_HTTPAUTH
, CURLAUTH_ANY
);
256 if (http_proactive_auth
)
257 init_curl_http_auth(result
);
259 if (ssl_cert
!= NULL
)
260 curl_easy_setopt(result
, CURLOPT_SSLCERT
, ssl_cert
);
261 if (has_cert_password())
262 curl_easy_setopt(result
, CURLOPT_KEYPASSWD
, cert_auth
.password
);
263 #if LIBCURL_VERSION_NUM >= 0x070903
265 curl_easy_setopt(result
, CURLOPT_SSLKEY
, ssl_key
);
267 #if LIBCURL_VERSION_NUM >= 0x070908
268 if (ssl_capath
!= NULL
)
269 curl_easy_setopt(result
, CURLOPT_CAPATH
, ssl_capath
);
271 if (ssl_cainfo
!= NULL
)
272 curl_easy_setopt(result
, CURLOPT_CAINFO
, ssl_cainfo
);
273 curl_easy_setopt(result
, CURLOPT_FAILONERROR
, 1);
275 if (curl_low_speed_limit
> 0 && curl_low_speed_time
> 0) {
276 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_LIMIT
,
277 curl_low_speed_limit
);
278 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_TIME
,
279 curl_low_speed_time
);
282 curl_easy_setopt(result
, CURLOPT_FOLLOWLOCATION
, 1);
283 #if LIBCURL_VERSION_NUM >= 0x071301
284 curl_easy_setopt(result
, CURLOPT_POSTREDIR
, CURL_REDIR_POST_ALL
);
285 #elif LIBCURL_VERSION_NUM >= 0x071101
286 curl_easy_setopt(result
, CURLOPT_POST301
, 1);
289 if (getenv("GIT_CURL_VERBOSE"))
290 curl_easy_setopt(result
, CURLOPT_VERBOSE
, 1);
292 curl_easy_setopt(result
, CURLOPT_USERAGENT
,
293 user_agent
? user_agent
: GIT_HTTP_USER_AGENT
);
295 if (curl_ftp_no_epsv
)
296 curl_easy_setopt(result
, CURLOPT_FTP_USE_EPSV
, 0);
299 curl_easy_setopt(result
, CURLOPT_PROXY
, curl_http_proxy
);
304 static void set_from_env(const char **var
, const char *envname
)
306 const char *val
= getenv(envname
);
311 void http_init(struct remote
*remote
, const char *url
, int proactive_auth
)
313 char *low_speed_limit
;
314 char *low_speed_time
;
318 git_config(http_options
, NULL
);
320 curl_global_init(CURL_GLOBAL_ALL
);
322 http_proactive_auth
= proactive_auth
;
324 if (remote
&& remote
->http_proxy
)
325 curl_http_proxy
= xstrdup(remote
->http_proxy
);
327 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
328 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
330 #ifdef USE_CURL_MULTI
332 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
333 if (http_max_requests
!= NULL
)
334 max_requests
= atoi(http_max_requests
);
337 curlm
= curl_multi_init();
339 fprintf(stderr
, "Error creating curl multi handle.\n");
344 if (getenv("GIT_SSL_NO_VERIFY"))
347 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
348 #if LIBCURL_VERSION_NUM >= 0x070903
349 set_from_env(&ssl_key
, "GIT_SSL_KEY");
351 #if LIBCURL_VERSION_NUM >= 0x070908
352 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
354 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
356 set_from_env(&user_agent
, "GIT_HTTP_USER_AGENT");
358 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
359 if (low_speed_limit
!= NULL
)
360 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
361 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
362 if (low_speed_time
!= NULL
)
363 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
365 if (curl_ssl_verify
== -1)
368 curl_session_count
= 0;
369 #ifdef USE_CURL_MULTI
370 if (max_requests
< 1)
371 max_requests
= DEFAULT_MAX_REQUESTS
;
374 if (getenv("GIT_CURL_FTP_NO_EPSV"))
375 curl_ftp_no_epsv
= 1;
378 credential_from_url(&http_auth
, url
);
379 if (!ssl_cert_password_required
&&
380 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
381 !prefixcmp(url
, "https://"))
382 ssl_cert_password_required
= 1;
385 #ifndef NO_CURL_EASY_DUPHANDLE
386 curl_default
= get_curl_handle();
390 void http_cleanup(void)
392 struct active_request_slot
*slot
= active_queue_head
;
394 while (slot
!= NULL
) {
395 struct active_request_slot
*next
= slot
->next
;
396 if (slot
->curl
!= NULL
) {
397 #ifdef USE_CURL_MULTI
398 curl_multi_remove_handle(curlm
, slot
->curl
);
400 curl_easy_cleanup(slot
->curl
);
405 active_queue_head
= NULL
;
407 #ifndef NO_CURL_EASY_DUPHANDLE
408 curl_easy_cleanup(curl_default
);
411 #ifdef USE_CURL_MULTI
412 curl_multi_cleanup(curlm
);
414 curl_global_cleanup();
416 curl_slist_free_all(pragma_header
);
417 pragma_header
= NULL
;
419 curl_slist_free_all(no_pragma_header
);
420 no_pragma_header
= NULL
;
422 if (curl_http_proxy
) {
423 free((void *)curl_http_proxy
);
424 curl_http_proxy
= NULL
;
427 if (cert_auth
.password
!= NULL
) {
428 memset(cert_auth
.password
, 0, strlen(cert_auth
.password
));
429 free(cert_auth
.password
);
430 cert_auth
.password
= NULL
;
432 ssl_cert_password_required
= 0;
435 struct active_request_slot
*get_active_slot(void)
437 struct active_request_slot
*slot
= active_queue_head
;
438 struct active_request_slot
*newslot
;
440 #ifdef USE_CURL_MULTI
443 /* Wait for a slot to open up if the queue is full */
444 while (active_requests
>= max_requests
) {
445 curl_multi_perform(curlm
, &num_transfers
);
446 if (num_transfers
< active_requests
)
447 process_curl_messages();
451 while (slot
!= NULL
&& slot
->in_use
)
455 newslot
= xmalloc(sizeof(*newslot
));
456 newslot
->curl
= NULL
;
458 newslot
->next
= NULL
;
460 slot
= active_queue_head
;
462 active_queue_head
= newslot
;
464 while (slot
->next
!= NULL
)
466 slot
->next
= newslot
;
471 if (slot
->curl
== NULL
) {
472 #ifdef NO_CURL_EASY_DUPHANDLE
473 slot
->curl
= get_curl_handle();
475 slot
->curl
= curl_easy_duphandle(curl_default
);
477 curl_session_count
++;
482 slot
->results
= NULL
;
483 slot
->finished
= NULL
;
484 slot
->callback_data
= NULL
;
485 slot
->callback_func
= NULL
;
486 curl_easy_setopt(slot
->curl
, CURLOPT_COOKIEFILE
, curl_cookie_file
);
487 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
488 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
489 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
490 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
491 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
492 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, NULL
);
493 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
494 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
499 int start_active_slot(struct active_request_slot
*slot
)
501 #ifdef USE_CURL_MULTI
502 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
505 if (curlm_result
!= CURLM_OK
&&
506 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
513 * We know there must be something to do, since we just added
516 curl_multi_perform(curlm
, &num_transfers
);
521 #ifdef USE_CURL_MULTI
525 struct fill_chain
*next
;
528 static struct fill_chain
*fill_cfg
;
530 void add_fill_function(void *data
, int (*fill
)(void *))
532 struct fill_chain
*new = xmalloc(sizeof(*new));
533 struct fill_chain
**linkp
= &fill_cfg
;
538 linkp
= &(*linkp
)->next
;
542 void fill_active_slots(void)
544 struct active_request_slot
*slot
= active_queue_head
;
546 while (active_requests
< max_requests
) {
547 struct fill_chain
*fill
;
548 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
549 if (fill
->fill(fill
->data
))
556 while (slot
!= NULL
) {
557 if (!slot
->in_use
&& slot
->curl
!= NULL
558 && curl_session_count
> min_curl_sessions
) {
559 curl_easy_cleanup(slot
->curl
);
561 curl_session_count
--;
567 void step_active_slots(void)
570 CURLMcode curlm_result
;
573 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
574 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
575 if (num_transfers
< active_requests
) {
576 process_curl_messages();
582 void run_active_slot(struct active_request_slot
*slot
)
584 #ifdef USE_CURL_MULTI
589 struct timeval select_timeout
;
592 slot
->finished
= &finished
;
597 #if LIBCURL_VERSION_NUM >= 0x070f04
599 curl_multi_timeout(curlm
, &curl_timeout
);
600 if (curl_timeout
== 0) {
602 } else if (curl_timeout
== -1) {
603 select_timeout
.tv_sec
= 0;
604 select_timeout
.tv_usec
= 50000;
606 select_timeout
.tv_sec
= curl_timeout
/ 1000;
607 select_timeout
.tv_usec
= (curl_timeout
% 1000) * 1000;
610 select_timeout
.tv_sec
= 0;
611 select_timeout
.tv_usec
= 50000;
618 curl_multi_fdset(curlm
, &readfds
, &writefds
, &excfds
, &max_fd
);
620 select(max_fd
+1, &readfds
, &writefds
, &excfds
, &select_timeout
);
624 while (slot
->in_use
) {
625 slot
->curl_result
= curl_easy_perform(slot
->curl
);
626 finish_active_slot(slot
);
631 static void closedown_active_slot(struct active_request_slot
*slot
)
637 static void release_active_slot(struct active_request_slot
*slot
)
639 closedown_active_slot(slot
);
640 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
641 #ifdef USE_CURL_MULTI
642 curl_multi_remove_handle(curlm
, slot
->curl
);
644 curl_easy_cleanup(slot
->curl
);
646 curl_session_count
--;
648 #ifdef USE_CURL_MULTI
653 void finish_active_slot(struct active_request_slot
*slot
)
655 closedown_active_slot(slot
);
656 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CODE
, &slot
->http_code
);
658 if (slot
->finished
!= NULL
)
659 (*slot
->finished
) = 1;
661 /* Store slot results so they can be read after the slot is reused */
662 if (slot
->results
!= NULL
) {
663 slot
->results
->curl_result
= slot
->curl_result
;
664 slot
->results
->http_code
= slot
->http_code
;
667 /* Run callback if appropriate */
668 if (slot
->callback_func
!= NULL
)
669 slot
->callback_func(slot
->callback_data
);
672 void finish_all_active_slots(void)
674 struct active_request_slot
*slot
= active_queue_head
;
678 run_active_slot(slot
);
679 slot
= active_queue_head
;
685 /* Helpers for modifying and creating URLs */
686 static inline int needs_quote(int ch
)
688 if (((ch
>= 'A') && (ch
<= 'Z'))
689 || ((ch
>= 'a') && (ch
<= 'z'))
690 || ((ch
>= '0') && (ch
<= '9'))
698 static char *quote_ref_url(const char *base
, const char *ref
)
700 struct strbuf buf
= STRBUF_INIT
;
704 end_url_with_slash(&buf
, base
);
706 for (cp
= ref
; (ch
= *cp
) != 0; cp
++)
708 strbuf_addf(&buf
, "%%%02x", ch
);
710 strbuf_addch(&buf
, *cp
);
712 return strbuf_detach(&buf
, NULL
);
715 void append_remote_object_url(struct strbuf
*buf
, const char *url
,
717 int only_two_digit_prefix
)
719 end_url_with_slash(buf
, url
);
721 strbuf_addf(buf
, "objects/%.*s/", 2, hex
);
722 if (!only_two_digit_prefix
)
723 strbuf_addf(buf
, "%s", hex
+2);
726 char *get_remote_object_url(const char *url
, const char *hex
,
727 int only_two_digit_prefix
)
729 struct strbuf buf
= STRBUF_INIT
;
730 append_remote_object_url(&buf
, url
, hex
, only_two_digit_prefix
);
731 return strbuf_detach(&buf
, NULL
);
734 /* http_request() targets */
735 #define HTTP_REQUEST_STRBUF 0
736 #define HTTP_REQUEST_FILE 1
738 static int http_request(const char *url
, void *result
, int target
, int options
)
740 struct active_request_slot
*slot
;
741 struct slot_results results
;
742 struct curl_slist
*headers
= NULL
;
743 struct strbuf buf
= STRBUF_INIT
;
746 slot
= get_active_slot();
747 slot
->results
= &results
;
748 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
750 if (result
== NULL
) {
751 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 1);
753 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
754 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, result
);
756 if (target
== HTTP_REQUEST_FILE
) {
757 long posn
= ftell(result
);
758 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
761 strbuf_addf(&buf
, "Range: bytes=%ld-", posn
);
762 headers
= curl_slist_append(headers
, buf
.buf
);
766 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
770 strbuf_addstr(&buf
, "Pragma:");
771 if (options
& HTTP_NO_CACHE
)
772 strbuf_addstr(&buf
, " no-cache");
774 headers
= curl_slist_append(headers
, buf
.buf
);
776 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, url
);
777 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
779 if (start_active_slot(slot
)) {
780 run_active_slot(slot
);
781 if (results
.curl_result
== CURLE_OK
)
783 else if (missing_target(&results
))
784 ret
= HTTP_MISSING_TARGET
;
785 else if (results
.http_code
== 401) {
786 if (http_auth
.username
&& http_auth
.password
) {
787 credential_reject(&http_auth
);
790 credential_fill(&http_auth
);
791 init_curl_http_auth(slot
->curl
);
795 if (!curl_errorstr
[0])
796 strlcpy(curl_errorstr
,
797 curl_easy_strerror(results
.curl_result
),
798 sizeof(curl_errorstr
));
802 error("Unable to start HTTP request for %s", url
);
803 ret
= HTTP_START_FAILED
;
806 curl_slist_free_all(headers
);
807 strbuf_release(&buf
);
810 credential_approve(&http_auth
);
815 static int http_request_reauth(const char *url
, void *result
, int target
,
818 int ret
= http_request(url
, result
, target
, options
);
819 if (ret
!= HTTP_REAUTH
)
821 return http_request(url
, result
, target
, options
);
824 int http_get_strbuf(const char *url
, struct strbuf
*result
, int options
)
826 return http_request_reauth(url
, result
, HTTP_REQUEST_STRBUF
, options
);
830 * Downloads an url and stores the result in the given file.
832 * If a previous interrupted download is detected (i.e. a previous temporary
833 * file is still around) the download is resumed.
835 static int http_get_file(const char *url
, const char *filename
, int options
)
838 struct strbuf tmpfile
= STRBUF_INIT
;
841 strbuf_addf(&tmpfile
, "%s.temp", filename
);
842 result
= fopen(tmpfile
.buf
, "a");
844 error("Unable to open local file %s", tmpfile
.buf
);
849 ret
= http_request_reauth(url
, result
, HTTP_REQUEST_FILE
, options
);
852 if ((ret
== HTTP_OK
) && move_temp_to_file(tmpfile
.buf
, filename
))
855 strbuf_release(&tmpfile
);
859 int http_error(const char *url
, int ret
)
861 /* http_request has already handled HTTP_START_FAILED. */
862 if (ret
!= HTTP_START_FAILED
)
863 error("%s while accessing %s", curl_errorstr
, url
);
868 int http_fetch_ref(const char *base
, struct ref
*ref
)
871 struct strbuf buffer
= STRBUF_INIT
;
874 url
= quote_ref_url(base
, ref
->name
);
875 if (http_get_strbuf(url
, &buffer
, HTTP_NO_CACHE
) == HTTP_OK
) {
876 strbuf_rtrim(&buffer
);
877 if (buffer
.len
== 40)
878 ret
= get_sha1_hex(buffer
.buf
, ref
->old_sha1
);
879 else if (!prefixcmp(buffer
.buf
, "ref: ")) {
880 ref
->symref
= xstrdup(buffer
.buf
+ 5);
885 strbuf_release(&buffer
);
890 /* Helpers for fetching packs */
891 static char *fetch_pack_index(unsigned char *sha1
, const char *base_url
)
894 struct strbuf buf
= STRBUF_INIT
;
897 fprintf(stderr
, "Getting index for pack %s\n", sha1_to_hex(sha1
));
899 end_url_with_slash(&buf
, base_url
);
900 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", sha1_to_hex(sha1
));
901 url
= strbuf_detach(&buf
, NULL
);
903 strbuf_addf(&buf
, "%s.temp", sha1_pack_index_name(sha1
));
904 tmp
= strbuf_detach(&buf
, NULL
);
906 if (http_get_file(url
, tmp
, 0) != HTTP_OK
) {
907 error("Unable to get pack index %s\n", url
);
916 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
917 unsigned char *sha1
, const char *base_url
)
919 struct packed_git
*new_pack
;
920 char *tmp_idx
= NULL
;
923 if (has_pack_index(sha1
)) {
924 new_pack
= parse_pack_index(sha1
, NULL
);
926 return -1; /* parse_pack_index() already issued error message */
930 tmp_idx
= fetch_pack_index(sha1
, base_url
);
934 new_pack
= parse_pack_index(sha1
, tmp_idx
);
939 return -1; /* parse_pack_index() already issued error message */
942 ret
= verify_pack_index(new_pack
);
944 close_pack_index(new_pack
);
945 ret
= move_temp_to_file(tmp_idx
, sha1_pack_index_name(sha1
));
952 new_pack
->next
= *packs_head
;
953 *packs_head
= new_pack
;
957 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
961 struct strbuf buf
= STRBUF_INIT
;
962 unsigned char sha1
[20];
964 end_url_with_slash(&buf
, base_url
);
965 strbuf_addstr(&buf
, "objects/info/packs");
966 url
= strbuf_detach(&buf
, NULL
);
968 ret
= http_get_strbuf(url
, &buf
, HTTP_NO_CACHE
);
973 while (i
< buf
.len
) {
977 if (i
+ 52 <= buf
.len
&&
978 !prefixcmp(data
+ i
, " pack-") &&
979 !prefixcmp(data
+ i
+ 46, ".pack\n")) {
980 get_sha1_hex(data
+ i
+ 6, sha1
);
981 fetch_and_setup_pack_index(packs_head
, sha1
,
987 while (i
< buf
.len
&& data
[i
] != '\n')
998 void release_http_pack_request(struct http_pack_request
*preq
)
1000 if (preq
->packfile
!= NULL
) {
1001 fclose(preq
->packfile
);
1002 preq
->packfile
= NULL
;
1004 if (preq
->range_header
!= NULL
) {
1005 curl_slist_free_all(preq
->range_header
);
1006 preq
->range_header
= NULL
;
1012 int finish_http_pack_request(struct http_pack_request
*preq
)
1014 struct packed_git
**lst
;
1015 struct packed_git
*p
= preq
->target
;
1017 struct child_process ip
;
1018 const char *ip_argv
[8];
1020 close_pack_index(p
);
1022 fclose(preq
->packfile
);
1023 preq
->packfile
= NULL
;
1027 lst
= &((*lst
)->next
);
1028 *lst
= (*lst
)->next
;
1030 tmp_idx
= xstrdup(preq
->tmpfile
);
1031 strcpy(tmp_idx
+ strlen(tmp_idx
) - strlen(".pack.temp"),
1034 ip_argv
[0] = "index-pack";
1036 ip_argv
[2] = tmp_idx
;
1037 ip_argv
[3] = preq
->tmpfile
;
1040 memset(&ip
, 0, sizeof(ip
));
1046 if (run_command(&ip
)) {
1047 unlink(preq
->tmpfile
);
1053 unlink(sha1_pack_index_name(p
->sha1
));
1055 if (move_temp_to_file(preq
->tmpfile
, sha1_pack_name(p
->sha1
))
1056 || move_temp_to_file(tmp_idx
, sha1_pack_index_name(p
->sha1
))) {
1061 install_packed_git(p
);
1066 struct http_pack_request
*new_http_pack_request(
1067 struct packed_git
*target
, const char *base_url
)
1070 char range
[RANGE_HEADER_SIZE
];
1071 struct strbuf buf
= STRBUF_INIT
;
1072 struct http_pack_request
*preq
;
1074 preq
= xcalloc(1, sizeof(*preq
));
1075 preq
->target
= target
;
1077 end_url_with_slash(&buf
, base_url
);
1078 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1079 sha1_to_hex(target
->sha1
));
1080 preq
->url
= strbuf_detach(&buf
, NULL
);
1082 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp",
1083 sha1_pack_name(target
->sha1
));
1084 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1085 if (!preq
->packfile
) {
1086 error("Unable to open local file %s for pack",
1091 preq
->slot
= get_active_slot();
1092 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1093 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1094 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1095 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1099 * If there is data present from a previous transfer attempt,
1100 * resume where it left off
1102 prev_posn
= ftell(preq
->packfile
);
1104 if (http_is_verbose
)
1106 "Resuming fetch of pack %s at byte %ld\n",
1107 sha1_to_hex(target
->sha1
), prev_posn
);
1108 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1109 preq
->range_header
= curl_slist_append(NULL
, range
);
1110 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1111 preq
->range_header
);
1122 /* Helpers for fetching objects (loose) */
1123 static size_t fwrite_sha1_file(char *ptr
, size_t eltsize
, size_t nmemb
,
1126 unsigned char expn
[4096];
1127 size_t size
= eltsize
* nmemb
;
1129 struct http_object_request
*freq
=
1130 (struct http_object_request
*)data
;
1132 ssize_t retval
= xwrite(freq
->localfile
,
1133 (char *) ptr
+ posn
, size
- posn
);
1137 } while (posn
< size
);
1139 freq
->stream
.avail_in
= size
;
1140 freq
->stream
.next_in
= (void *)ptr
;
1142 freq
->stream
.next_out
= expn
;
1143 freq
->stream
.avail_out
= sizeof(expn
);
1144 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1145 git_SHA1_Update(&freq
->c
, expn
,
1146 sizeof(expn
) - freq
->stream
.avail_out
);
1147 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1151 struct http_object_request
*new_http_object_request(const char *base_url
,
1152 unsigned char *sha1
)
1154 char *hex
= sha1_to_hex(sha1
);
1156 char prevfile
[PATH_MAX
];
1158 char prev_buf
[PREV_BUF_SIZE
];
1159 ssize_t prev_read
= 0;
1161 char range
[RANGE_HEADER_SIZE
];
1162 struct curl_slist
*range_header
= NULL
;
1163 struct http_object_request
*freq
;
1165 freq
= xcalloc(1, sizeof(*freq
));
1166 hashcpy(freq
->sha1
, sha1
);
1167 freq
->localfile
= -1;
1169 filename
= sha1_file_name(sha1
);
1170 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1171 "%s.temp", filename
);
1173 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1174 unlink_or_warn(prevfile
);
1175 rename(freq
->tmpfile
, prevfile
);
1176 unlink_or_warn(freq
->tmpfile
);
1178 if (freq
->localfile
!= -1)
1179 error("fd leakage in start: %d", freq
->localfile
);
1180 freq
->localfile
= open(freq
->tmpfile
,
1181 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1183 * This could have failed due to the "lazy directory creation";
1184 * try to mkdir the last path component.
1186 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1187 char *dir
= strrchr(freq
->tmpfile
, '/');
1190 mkdir(freq
->tmpfile
, 0777);
1193 freq
->localfile
= open(freq
->tmpfile
,
1194 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1197 if (freq
->localfile
< 0) {
1198 error("Couldn't create temporary file %s: %s",
1199 freq
->tmpfile
, strerror(errno
));
1203 git_inflate_init(&freq
->stream
);
1205 git_SHA1_Init(&freq
->c
);
1207 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1210 * If a previous temp file is present, process what was already
1213 prevlocal
= open(prevfile
, O_RDONLY
);
1214 if (prevlocal
!= -1) {
1216 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1218 if (fwrite_sha1_file(prev_buf
,
1221 freq
) == prev_read
) {
1222 prev_posn
+= prev_read
;
1227 } while (prev_read
> 0);
1230 unlink_or_warn(prevfile
);
1233 * Reset inflate/SHA1 if there was an error reading the previous temp
1234 * file; also rewind to the beginning of the local file.
1236 if (prev_read
== -1) {
1237 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1238 git_inflate_init(&freq
->stream
);
1239 git_SHA1_Init(&freq
->c
);
1242 lseek(freq
->localfile
, 0, SEEK_SET
);
1243 if (ftruncate(freq
->localfile
, 0) < 0) {
1244 error("Couldn't truncate temporary file %s: %s",
1245 freq
->tmpfile
, strerror(errno
));
1251 freq
->slot
= get_active_slot();
1253 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1254 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1255 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1256 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1257 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1260 * If we have successfully processed data from a previous fetch
1261 * attempt, only fetch the data we don't already have.
1264 if (http_is_verbose
)
1266 "Resuming fetch of object %s at byte %ld\n",
1268 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1269 range_header
= curl_slist_append(range_header
, range
);
1270 curl_easy_setopt(freq
->slot
->curl
,
1271 CURLOPT_HTTPHEADER
, range_header
);
1282 void process_http_object_request(struct http_object_request
*freq
)
1284 if (freq
->slot
== NULL
)
1286 freq
->curl_result
= freq
->slot
->curl_result
;
1287 freq
->http_code
= freq
->slot
->http_code
;
1291 int finish_http_object_request(struct http_object_request
*freq
)
1295 close(freq
->localfile
);
1296 freq
->localfile
= -1;
1298 process_http_object_request(freq
);
1300 if (freq
->http_code
== 416) {
1301 warning("requested range invalid; we may already have all the data.");
1302 } else if (freq
->curl_result
!= CURLE_OK
) {
1303 if (stat(freq
->tmpfile
, &st
) == 0)
1304 if (st
.st_size
== 0)
1305 unlink_or_warn(freq
->tmpfile
);
1309 git_inflate_end(&freq
->stream
);
1310 git_SHA1_Final(freq
->real_sha1
, &freq
->c
);
1311 if (freq
->zret
!= Z_STREAM_END
) {
1312 unlink_or_warn(freq
->tmpfile
);
1315 if (hashcmp(freq
->sha1
, freq
->real_sha1
)) {
1316 unlink_or_warn(freq
->tmpfile
);
1320 move_temp_to_file(freq
->tmpfile
, sha1_file_name(freq
->sha1
));
1322 return freq
->rename
;
1325 void abort_http_object_request(struct http_object_request
*freq
)
1327 unlink_or_warn(freq
->tmpfile
);
1329 release_http_object_request(freq
);
1332 void release_http_object_request(struct http_object_request
*freq
)
1334 if (freq
->localfile
!= -1) {
1335 close(freq
->localfile
);
1336 freq
->localfile
= -1;
1338 if (freq
->url
!= NULL
) {
1342 if (freq
->slot
!= NULL
) {
1343 freq
->slot
->callback_func
= NULL
;
1344 freq
->slot
->callback_data
= NULL
;
1345 release_active_slot(freq
->slot
);