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);
298 if (curl_http_proxy
) {
299 curl_easy_setopt(result
, CURLOPT_PROXY
, curl_http_proxy
);
300 #if LIBCURL_VERSION_NUM >= 0x070a07
301 curl_easy_setopt(result
, CURLOPT_PROXYAUTH
, CURLAUTH_ANY
);
308 static void set_from_env(const char **var
, const char *envname
)
310 const char *val
= getenv(envname
);
315 void http_init(struct remote
*remote
, const char *url
, int proactive_auth
)
317 char *low_speed_limit
;
318 char *low_speed_time
;
322 git_config(http_options
, NULL
);
324 curl_global_init(CURL_GLOBAL_ALL
);
326 http_proactive_auth
= proactive_auth
;
328 if (remote
&& remote
->http_proxy
)
329 curl_http_proxy
= xstrdup(remote
->http_proxy
);
331 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
332 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
334 #ifdef USE_CURL_MULTI
336 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
337 if (http_max_requests
!= NULL
)
338 max_requests
= atoi(http_max_requests
);
341 curlm
= curl_multi_init();
343 fprintf(stderr
, "Error creating curl multi handle.\n");
348 if (getenv("GIT_SSL_NO_VERIFY"))
351 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
352 #if LIBCURL_VERSION_NUM >= 0x070903
353 set_from_env(&ssl_key
, "GIT_SSL_KEY");
355 #if LIBCURL_VERSION_NUM >= 0x070908
356 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
358 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
360 set_from_env(&user_agent
, "GIT_HTTP_USER_AGENT");
362 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
363 if (low_speed_limit
!= NULL
)
364 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
365 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
366 if (low_speed_time
!= NULL
)
367 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
369 if (curl_ssl_verify
== -1)
372 curl_session_count
= 0;
373 #ifdef USE_CURL_MULTI
374 if (max_requests
< 1)
375 max_requests
= DEFAULT_MAX_REQUESTS
;
378 if (getenv("GIT_CURL_FTP_NO_EPSV"))
379 curl_ftp_no_epsv
= 1;
382 credential_from_url(&http_auth
, url
);
383 if (!ssl_cert_password_required
&&
384 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
385 !prefixcmp(url
, "https://"))
386 ssl_cert_password_required
= 1;
389 #ifndef NO_CURL_EASY_DUPHANDLE
390 curl_default
= get_curl_handle();
394 void http_cleanup(void)
396 struct active_request_slot
*slot
= active_queue_head
;
398 while (slot
!= NULL
) {
399 struct active_request_slot
*next
= slot
->next
;
400 if (slot
->curl
!= NULL
) {
401 #ifdef USE_CURL_MULTI
402 curl_multi_remove_handle(curlm
, slot
->curl
);
404 curl_easy_cleanup(slot
->curl
);
409 active_queue_head
= NULL
;
411 #ifndef NO_CURL_EASY_DUPHANDLE
412 curl_easy_cleanup(curl_default
);
415 #ifdef USE_CURL_MULTI
416 curl_multi_cleanup(curlm
);
418 curl_global_cleanup();
420 curl_slist_free_all(pragma_header
);
421 pragma_header
= NULL
;
423 curl_slist_free_all(no_pragma_header
);
424 no_pragma_header
= NULL
;
426 if (curl_http_proxy
) {
427 free((void *)curl_http_proxy
);
428 curl_http_proxy
= NULL
;
431 if (cert_auth
.password
!= NULL
) {
432 memset(cert_auth
.password
, 0, strlen(cert_auth
.password
));
433 free(cert_auth
.password
);
434 cert_auth
.password
= NULL
;
436 ssl_cert_password_required
= 0;
439 struct active_request_slot
*get_active_slot(void)
441 struct active_request_slot
*slot
= active_queue_head
;
442 struct active_request_slot
*newslot
;
444 #ifdef USE_CURL_MULTI
447 /* Wait for a slot to open up if the queue is full */
448 while (active_requests
>= max_requests
) {
449 curl_multi_perform(curlm
, &num_transfers
);
450 if (num_transfers
< active_requests
)
451 process_curl_messages();
455 while (slot
!= NULL
&& slot
->in_use
)
459 newslot
= xmalloc(sizeof(*newslot
));
460 newslot
->curl
= NULL
;
462 newslot
->next
= NULL
;
464 slot
= active_queue_head
;
466 active_queue_head
= newslot
;
468 while (slot
->next
!= NULL
)
470 slot
->next
= newslot
;
475 if (slot
->curl
== NULL
) {
476 #ifdef NO_CURL_EASY_DUPHANDLE
477 slot
->curl
= get_curl_handle();
479 slot
->curl
= curl_easy_duphandle(curl_default
);
481 curl_session_count
++;
486 slot
->results
= NULL
;
487 slot
->finished
= NULL
;
488 slot
->callback_data
= NULL
;
489 slot
->callback_func
= NULL
;
490 curl_easy_setopt(slot
->curl
, CURLOPT_COOKIEFILE
, curl_cookie_file
);
491 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
492 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
493 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
494 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
495 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
496 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, NULL
);
497 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
498 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
503 int start_active_slot(struct active_request_slot
*slot
)
505 #ifdef USE_CURL_MULTI
506 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
509 if (curlm_result
!= CURLM_OK
&&
510 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
517 * We know there must be something to do, since we just added
520 curl_multi_perform(curlm
, &num_transfers
);
525 #ifdef USE_CURL_MULTI
529 struct fill_chain
*next
;
532 static struct fill_chain
*fill_cfg
;
534 void add_fill_function(void *data
, int (*fill
)(void *))
536 struct fill_chain
*new = xmalloc(sizeof(*new));
537 struct fill_chain
**linkp
= &fill_cfg
;
542 linkp
= &(*linkp
)->next
;
546 void fill_active_slots(void)
548 struct active_request_slot
*slot
= active_queue_head
;
550 while (active_requests
< max_requests
) {
551 struct fill_chain
*fill
;
552 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
553 if (fill
->fill(fill
->data
))
560 while (slot
!= NULL
) {
561 if (!slot
->in_use
&& slot
->curl
!= NULL
562 && curl_session_count
> min_curl_sessions
) {
563 curl_easy_cleanup(slot
->curl
);
565 curl_session_count
--;
571 void step_active_slots(void)
574 CURLMcode curlm_result
;
577 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
578 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
579 if (num_transfers
< active_requests
) {
580 process_curl_messages();
586 void run_active_slot(struct active_request_slot
*slot
)
588 #ifdef USE_CURL_MULTI
593 struct timeval select_timeout
;
596 slot
->finished
= &finished
;
601 #if LIBCURL_VERSION_NUM >= 0x070f04
603 curl_multi_timeout(curlm
, &curl_timeout
);
604 if (curl_timeout
== 0) {
606 } else if (curl_timeout
== -1) {
607 select_timeout
.tv_sec
= 0;
608 select_timeout
.tv_usec
= 50000;
610 select_timeout
.tv_sec
= curl_timeout
/ 1000;
611 select_timeout
.tv_usec
= (curl_timeout
% 1000) * 1000;
614 select_timeout
.tv_sec
= 0;
615 select_timeout
.tv_usec
= 50000;
622 curl_multi_fdset(curlm
, &readfds
, &writefds
, &excfds
, &max_fd
);
624 select(max_fd
+1, &readfds
, &writefds
, &excfds
, &select_timeout
);
628 while (slot
->in_use
) {
629 slot
->curl_result
= curl_easy_perform(slot
->curl
);
630 finish_active_slot(slot
);
635 static void closedown_active_slot(struct active_request_slot
*slot
)
641 static void release_active_slot(struct active_request_slot
*slot
)
643 closedown_active_slot(slot
);
644 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
645 #ifdef USE_CURL_MULTI
646 curl_multi_remove_handle(curlm
, slot
->curl
);
648 curl_easy_cleanup(slot
->curl
);
650 curl_session_count
--;
652 #ifdef USE_CURL_MULTI
657 void finish_active_slot(struct active_request_slot
*slot
)
659 closedown_active_slot(slot
);
660 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CODE
, &slot
->http_code
);
662 if (slot
->finished
!= NULL
)
663 (*slot
->finished
) = 1;
665 /* Store slot results so they can be read after the slot is reused */
666 if (slot
->results
!= NULL
) {
667 slot
->results
->curl_result
= slot
->curl_result
;
668 slot
->results
->http_code
= slot
->http_code
;
671 /* Run callback if appropriate */
672 if (slot
->callback_func
!= NULL
)
673 slot
->callback_func(slot
->callback_data
);
676 void finish_all_active_slots(void)
678 struct active_request_slot
*slot
= active_queue_head
;
682 run_active_slot(slot
);
683 slot
= active_queue_head
;
689 /* Helpers for modifying and creating URLs */
690 static inline int needs_quote(int ch
)
692 if (((ch
>= 'A') && (ch
<= 'Z'))
693 || ((ch
>= 'a') && (ch
<= 'z'))
694 || ((ch
>= '0') && (ch
<= '9'))
702 static char *quote_ref_url(const char *base
, const char *ref
)
704 struct strbuf buf
= STRBUF_INIT
;
708 end_url_with_slash(&buf
, base
);
710 for (cp
= ref
; (ch
= *cp
) != 0; cp
++)
712 strbuf_addf(&buf
, "%%%02x", ch
);
714 strbuf_addch(&buf
, *cp
);
716 return strbuf_detach(&buf
, NULL
);
719 void append_remote_object_url(struct strbuf
*buf
, const char *url
,
721 int only_two_digit_prefix
)
723 end_url_with_slash(buf
, url
);
725 strbuf_addf(buf
, "objects/%.*s/", 2, hex
);
726 if (!only_two_digit_prefix
)
727 strbuf_addf(buf
, "%s", hex
+2);
730 char *get_remote_object_url(const char *url
, const char *hex
,
731 int only_two_digit_prefix
)
733 struct strbuf buf
= STRBUF_INIT
;
734 append_remote_object_url(&buf
, url
, hex
, only_two_digit_prefix
);
735 return strbuf_detach(&buf
, NULL
);
738 /* http_request() targets */
739 #define HTTP_REQUEST_STRBUF 0
740 #define HTTP_REQUEST_FILE 1
742 static int http_request(const char *url
, void *result
, int target
, int options
)
744 struct active_request_slot
*slot
;
745 struct slot_results results
;
746 struct curl_slist
*headers
= NULL
;
747 struct strbuf buf
= STRBUF_INIT
;
750 slot
= get_active_slot();
751 slot
->results
= &results
;
752 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
754 if (result
== NULL
) {
755 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 1);
757 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
758 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, result
);
760 if (target
== HTTP_REQUEST_FILE
) {
761 long posn
= ftell(result
);
762 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
765 strbuf_addf(&buf
, "Range: bytes=%ld-", posn
);
766 headers
= curl_slist_append(headers
, buf
.buf
);
770 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
774 strbuf_addstr(&buf
, "Pragma:");
775 if (options
& HTTP_NO_CACHE
)
776 strbuf_addstr(&buf
, " no-cache");
778 headers
= curl_slist_append(headers
, buf
.buf
);
780 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, url
);
781 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
783 if (start_active_slot(slot
)) {
784 run_active_slot(slot
);
785 if (results
.curl_result
== CURLE_OK
)
787 else if (missing_target(&results
))
788 ret
= HTTP_MISSING_TARGET
;
789 else if (results
.http_code
== 401) {
790 if (http_auth
.username
&& http_auth
.password
) {
791 credential_reject(&http_auth
);
794 credential_fill(&http_auth
);
795 init_curl_http_auth(slot
->curl
);
799 if (!curl_errorstr
[0])
800 strlcpy(curl_errorstr
,
801 curl_easy_strerror(results
.curl_result
),
802 sizeof(curl_errorstr
));
806 error("Unable to start HTTP request for %s", url
);
807 ret
= HTTP_START_FAILED
;
810 curl_slist_free_all(headers
);
811 strbuf_release(&buf
);
814 credential_approve(&http_auth
);
819 static int http_request_reauth(const char *url
, void *result
, int target
,
822 int ret
= http_request(url
, result
, target
, options
);
823 if (ret
!= HTTP_REAUTH
)
825 return http_request(url
, result
, target
, options
);
828 int http_get_strbuf(const char *url
, struct strbuf
*result
, int options
)
830 return http_request_reauth(url
, result
, HTTP_REQUEST_STRBUF
, options
);
834 * Downloads an url and stores the result in the given file.
836 * If a previous interrupted download is detected (i.e. a previous temporary
837 * file is still around) the download is resumed.
839 static int http_get_file(const char *url
, const char *filename
, int options
)
842 struct strbuf tmpfile
= STRBUF_INIT
;
845 strbuf_addf(&tmpfile
, "%s.temp", filename
);
846 result
= fopen(tmpfile
.buf
, "a");
848 error("Unable to open local file %s", tmpfile
.buf
);
853 ret
= http_request_reauth(url
, result
, HTTP_REQUEST_FILE
, options
);
856 if ((ret
== HTTP_OK
) && move_temp_to_file(tmpfile
.buf
, filename
))
859 strbuf_release(&tmpfile
);
863 int http_error(const char *url
, int ret
)
865 /* http_request has already handled HTTP_START_FAILED. */
866 if (ret
!= HTTP_START_FAILED
)
867 error("%s while accessing %s", curl_errorstr
, url
);
872 int http_fetch_ref(const char *base
, struct ref
*ref
)
875 struct strbuf buffer
= STRBUF_INIT
;
878 url
= quote_ref_url(base
, ref
->name
);
879 if (http_get_strbuf(url
, &buffer
, HTTP_NO_CACHE
) == HTTP_OK
) {
880 strbuf_rtrim(&buffer
);
881 if (buffer
.len
== 40)
882 ret
= get_sha1_hex(buffer
.buf
, ref
->old_sha1
);
883 else if (!prefixcmp(buffer
.buf
, "ref: ")) {
884 ref
->symref
= xstrdup(buffer
.buf
+ 5);
889 strbuf_release(&buffer
);
894 /* Helpers for fetching packs */
895 static char *fetch_pack_index(unsigned char *sha1
, const char *base_url
)
898 struct strbuf buf
= STRBUF_INIT
;
901 fprintf(stderr
, "Getting index for pack %s\n", sha1_to_hex(sha1
));
903 end_url_with_slash(&buf
, base_url
);
904 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", sha1_to_hex(sha1
));
905 url
= strbuf_detach(&buf
, NULL
);
907 strbuf_addf(&buf
, "%s.temp", sha1_pack_index_name(sha1
));
908 tmp
= strbuf_detach(&buf
, NULL
);
910 if (http_get_file(url
, tmp
, 0) != HTTP_OK
) {
911 error("Unable to get pack index %s\n", url
);
920 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
921 unsigned char *sha1
, const char *base_url
)
923 struct packed_git
*new_pack
;
924 char *tmp_idx
= NULL
;
927 if (has_pack_index(sha1
)) {
928 new_pack
= parse_pack_index(sha1
, NULL
);
930 return -1; /* parse_pack_index() already issued error message */
934 tmp_idx
= fetch_pack_index(sha1
, base_url
);
938 new_pack
= parse_pack_index(sha1
, tmp_idx
);
943 return -1; /* parse_pack_index() already issued error message */
946 ret
= verify_pack_index(new_pack
);
948 close_pack_index(new_pack
);
949 ret
= move_temp_to_file(tmp_idx
, sha1_pack_index_name(sha1
));
956 new_pack
->next
= *packs_head
;
957 *packs_head
= new_pack
;
961 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
965 struct strbuf buf
= STRBUF_INIT
;
966 unsigned char sha1
[20];
968 end_url_with_slash(&buf
, base_url
);
969 strbuf_addstr(&buf
, "objects/info/packs");
970 url
= strbuf_detach(&buf
, NULL
);
972 ret
= http_get_strbuf(url
, &buf
, HTTP_NO_CACHE
);
977 while (i
< buf
.len
) {
981 if (i
+ 52 <= buf
.len
&&
982 !prefixcmp(data
+ i
, " pack-") &&
983 !prefixcmp(data
+ i
+ 46, ".pack\n")) {
984 get_sha1_hex(data
+ i
+ 6, sha1
);
985 fetch_and_setup_pack_index(packs_head
, sha1
,
991 while (i
< buf
.len
&& data
[i
] != '\n')
1002 void release_http_pack_request(struct http_pack_request
*preq
)
1004 if (preq
->packfile
!= NULL
) {
1005 fclose(preq
->packfile
);
1006 preq
->packfile
= NULL
;
1008 if (preq
->range_header
!= NULL
) {
1009 curl_slist_free_all(preq
->range_header
);
1010 preq
->range_header
= NULL
;
1016 int finish_http_pack_request(struct http_pack_request
*preq
)
1018 struct packed_git
**lst
;
1019 struct packed_git
*p
= preq
->target
;
1021 struct child_process ip
;
1022 const char *ip_argv
[8];
1024 close_pack_index(p
);
1026 fclose(preq
->packfile
);
1027 preq
->packfile
= NULL
;
1031 lst
= &((*lst
)->next
);
1032 *lst
= (*lst
)->next
;
1034 tmp_idx
= xstrdup(preq
->tmpfile
);
1035 strcpy(tmp_idx
+ strlen(tmp_idx
) - strlen(".pack.temp"),
1038 ip_argv
[0] = "index-pack";
1040 ip_argv
[2] = tmp_idx
;
1041 ip_argv
[3] = preq
->tmpfile
;
1044 memset(&ip
, 0, sizeof(ip
));
1050 if (run_command(&ip
)) {
1051 unlink(preq
->tmpfile
);
1057 unlink(sha1_pack_index_name(p
->sha1
));
1059 if (move_temp_to_file(preq
->tmpfile
, sha1_pack_name(p
->sha1
))
1060 || move_temp_to_file(tmp_idx
, sha1_pack_index_name(p
->sha1
))) {
1065 install_packed_git(p
);
1070 struct http_pack_request
*new_http_pack_request(
1071 struct packed_git
*target
, const char *base_url
)
1074 char range
[RANGE_HEADER_SIZE
];
1075 struct strbuf buf
= STRBUF_INIT
;
1076 struct http_pack_request
*preq
;
1078 preq
= xcalloc(1, sizeof(*preq
));
1079 preq
->target
= target
;
1081 end_url_with_slash(&buf
, base_url
);
1082 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1083 sha1_to_hex(target
->sha1
));
1084 preq
->url
= strbuf_detach(&buf
, NULL
);
1086 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp",
1087 sha1_pack_name(target
->sha1
));
1088 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1089 if (!preq
->packfile
) {
1090 error("Unable to open local file %s for pack",
1095 preq
->slot
= get_active_slot();
1096 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1097 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1098 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1099 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1103 * If there is data present from a previous transfer attempt,
1104 * resume where it left off
1106 prev_posn
= ftell(preq
->packfile
);
1108 if (http_is_verbose
)
1110 "Resuming fetch of pack %s at byte %ld\n",
1111 sha1_to_hex(target
->sha1
), prev_posn
);
1112 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1113 preq
->range_header
= curl_slist_append(NULL
, range
);
1114 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1115 preq
->range_header
);
1126 /* Helpers for fetching objects (loose) */
1127 static size_t fwrite_sha1_file(char *ptr
, size_t eltsize
, size_t nmemb
,
1130 unsigned char expn
[4096];
1131 size_t size
= eltsize
* nmemb
;
1133 struct http_object_request
*freq
=
1134 (struct http_object_request
*)data
;
1136 ssize_t retval
= xwrite(freq
->localfile
,
1137 (char *) ptr
+ posn
, size
- posn
);
1141 } while (posn
< size
);
1143 freq
->stream
.avail_in
= size
;
1144 freq
->stream
.next_in
= (void *)ptr
;
1146 freq
->stream
.next_out
= expn
;
1147 freq
->stream
.avail_out
= sizeof(expn
);
1148 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1149 git_SHA1_Update(&freq
->c
, expn
,
1150 sizeof(expn
) - freq
->stream
.avail_out
);
1151 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1155 struct http_object_request
*new_http_object_request(const char *base_url
,
1156 unsigned char *sha1
)
1158 char *hex
= sha1_to_hex(sha1
);
1160 char prevfile
[PATH_MAX
];
1162 char prev_buf
[PREV_BUF_SIZE
];
1163 ssize_t prev_read
= 0;
1165 char range
[RANGE_HEADER_SIZE
];
1166 struct curl_slist
*range_header
= NULL
;
1167 struct http_object_request
*freq
;
1169 freq
= xcalloc(1, sizeof(*freq
));
1170 hashcpy(freq
->sha1
, sha1
);
1171 freq
->localfile
= -1;
1173 filename
= sha1_file_name(sha1
);
1174 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1175 "%s.temp", filename
);
1177 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1178 unlink_or_warn(prevfile
);
1179 rename(freq
->tmpfile
, prevfile
);
1180 unlink_or_warn(freq
->tmpfile
);
1182 if (freq
->localfile
!= -1)
1183 error("fd leakage in start: %d", freq
->localfile
);
1184 freq
->localfile
= open(freq
->tmpfile
,
1185 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1187 * This could have failed due to the "lazy directory creation";
1188 * try to mkdir the last path component.
1190 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1191 char *dir
= strrchr(freq
->tmpfile
, '/');
1194 mkdir(freq
->tmpfile
, 0777);
1197 freq
->localfile
= open(freq
->tmpfile
,
1198 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1201 if (freq
->localfile
< 0) {
1202 error("Couldn't create temporary file %s: %s",
1203 freq
->tmpfile
, strerror(errno
));
1207 git_inflate_init(&freq
->stream
);
1209 git_SHA1_Init(&freq
->c
);
1211 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1214 * If a previous temp file is present, process what was already
1217 prevlocal
= open(prevfile
, O_RDONLY
);
1218 if (prevlocal
!= -1) {
1220 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1222 if (fwrite_sha1_file(prev_buf
,
1225 freq
) == prev_read
) {
1226 prev_posn
+= prev_read
;
1231 } while (prev_read
> 0);
1234 unlink_or_warn(prevfile
);
1237 * Reset inflate/SHA1 if there was an error reading the previous temp
1238 * file; also rewind to the beginning of the local file.
1240 if (prev_read
== -1) {
1241 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1242 git_inflate_init(&freq
->stream
);
1243 git_SHA1_Init(&freq
->c
);
1246 lseek(freq
->localfile
, 0, SEEK_SET
);
1247 if (ftruncate(freq
->localfile
, 0) < 0) {
1248 error("Couldn't truncate temporary file %s: %s",
1249 freq
->tmpfile
, strerror(errno
));
1255 freq
->slot
= get_active_slot();
1257 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1258 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1259 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1260 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1261 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1264 * If we have successfully processed data from a previous fetch
1265 * attempt, only fetch the data we don't already have.
1268 if (http_is_verbose
)
1270 "Resuming fetch of object %s at byte %ld\n",
1272 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1273 range_header
= curl_slist_append(range_header
, range
);
1274 curl_easy_setopt(freq
->slot
->curl
,
1275 CURLOPT_HTTPHEADER
, range_header
);
1286 void process_http_object_request(struct http_object_request
*freq
)
1288 if (freq
->slot
== NULL
)
1290 freq
->curl_result
= freq
->slot
->curl_result
;
1291 freq
->http_code
= freq
->slot
->http_code
;
1295 int finish_http_object_request(struct http_object_request
*freq
)
1299 close(freq
->localfile
);
1300 freq
->localfile
= -1;
1302 process_http_object_request(freq
);
1304 if (freq
->http_code
== 416) {
1305 warning("requested range invalid; we may already have all the data.");
1306 } else if (freq
->curl_result
!= CURLE_OK
) {
1307 if (stat(freq
->tmpfile
, &st
) == 0)
1308 if (st
.st_size
== 0)
1309 unlink_or_warn(freq
->tmpfile
);
1313 git_inflate_end(&freq
->stream
);
1314 git_SHA1_Final(freq
->real_sha1
, &freq
->c
);
1315 if (freq
->zret
!= Z_STREAM_END
) {
1316 unlink_or_warn(freq
->tmpfile
);
1319 if (hashcmp(freq
->sha1
, freq
->real_sha1
)) {
1320 unlink_or_warn(freq
->tmpfile
);
1324 move_temp_to_file(freq
->tmpfile
, sha1_file_name(freq
->sha1
));
1326 return freq
->rename
;
1329 void abort_http_object_request(struct http_object_request
*freq
)
1331 unlink_or_warn(freq
->tmpfile
);
1333 release_http_object_request(freq
);
1336 void release_http_object_request(struct http_object_request
*freq
)
1338 if (freq
->localfile
!= -1) {
1339 close(freq
->localfile
);
1340 freq
->localfile
= -1;
1342 if (freq
->url
!= NULL
) {
1346 if (freq
->slot
!= NULL
) {
1347 freq
->slot
->callback_func
= NULL
;
1348 freq
->slot
->callback_data
= NULL
;
1349 release_active_slot(freq
->slot
);