9 size_t http_post_buffer
= 16 * LARGE_PACKET_MAX
;
11 #if LIBCURL_VERSION_NUM >= 0x070a06
12 #define LIBCURL_CAN_HANDLE_AUTH_ANY
15 static int min_curl_sessions
= 1;
16 static int curl_session_count
;
18 static int max_requests
= -1;
21 #ifndef NO_CURL_EASY_DUPHANDLE
22 static CURL
*curl_default
;
25 #define PREV_BUF_SIZE 4096
26 #define RANGE_HEADER_SIZE 30
28 char curl_errorstr
[CURL_ERROR_SIZE
];
30 static int curl_ssl_verify
= -1;
31 static const char *ssl_cert
;
32 #if LIBCURL_VERSION_NUM >= 0x070903
33 static const char *ssl_key
;
35 #if LIBCURL_VERSION_NUM >= 0x070908
36 static const char *ssl_capath
;
38 static const char *ssl_cainfo
;
39 static long curl_low_speed_limit
= -1;
40 static long curl_low_speed_time
= -1;
41 static int curl_ftp_no_epsv
;
42 static const char *curl_http_proxy
;
43 static char *user_name
, *user_pass
;
45 #if LIBCURL_VERSION_NUM >= 0x071700
46 /* Use CURLOPT_KEYPASSWD as is */
47 #elif LIBCURL_VERSION_NUM >= 0x070903
48 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
50 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
53 static char *ssl_cert_password
;
54 static int ssl_cert_password_required
;
56 static struct curl_slist
*pragma_header
;
57 static struct curl_slist
*no_pragma_header
;
59 static struct active_request_slot
*active_queue_head
;
61 size_t fread_buffer(void *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
63 size_t size
= eltsize
* nmemb
;
64 struct buffer
*buffer
= buffer_
;
66 if (size
> buffer
->buf
.len
- buffer
->posn
)
67 size
= buffer
->buf
.len
- buffer
->posn
;
68 memcpy(ptr
, buffer
->buf
.buf
+ buffer
->posn
, size
);
75 curlioerr
ioctl_buffer(CURL
*handle
, int cmd
, void *clientp
)
77 struct buffer
*buffer
= clientp
;
83 case CURLIOCMD_RESTARTREAD
:
88 return CURLIOE_UNKNOWNCMD
;
93 size_t fwrite_buffer(const void *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
95 size_t size
= eltsize
* nmemb
;
96 struct strbuf
*buffer
= buffer_
;
98 strbuf_add(buffer
, ptr
, size
);
103 size_t fwrite_null(const void *ptr
, size_t eltsize
, size_t nmemb
, void *strbuf
)
106 return eltsize
* nmemb
;
109 #ifdef USE_CURL_MULTI
110 static void process_curl_messages(void)
113 struct active_request_slot
*slot
;
114 CURLMsg
*curl_message
= curl_multi_info_read(curlm
, &num_messages
);
116 while (curl_message
!= NULL
) {
117 if (curl_message
->msg
== CURLMSG_DONE
) {
118 int curl_result
= curl_message
->data
.result
;
119 slot
= active_queue_head
;
120 while (slot
!= NULL
&&
121 slot
->curl
!= curl_message
->easy_handle
)
124 curl_multi_remove_handle(curlm
, slot
->curl
);
125 slot
->curl_result
= curl_result
;
126 finish_active_slot(slot
);
128 fprintf(stderr
, "Received DONE message for unknown request!\n");
131 fprintf(stderr
, "Unknown CURL message received: %d\n",
132 (int)curl_message
->msg
);
134 curl_message
= curl_multi_info_read(curlm
, &num_messages
);
139 static int git_config_path(const char **result
,
140 const char *var
, const char *value
)
142 if (git_config_string(result
, var
, value
))
144 *result
= system_path(*result
);
148 static int http_options(const char *var
, const char *value
, void *cb
)
150 if (!strcmp("http.sslverify", var
)) {
151 curl_ssl_verify
= git_config_bool(var
, value
);
154 if (!strcmp("http.sslcert", var
))
155 return git_config_path(&ssl_cert
, var
, value
);
156 #if LIBCURL_VERSION_NUM >= 0x070903
157 if (!strcmp("http.sslkey", var
))
158 return git_config_path(&ssl_key
, var
, value
);
160 #if LIBCURL_VERSION_NUM >= 0x070908
161 if (!strcmp("http.sslcapath", var
))
162 return git_config_path(&ssl_capath
, var
, value
);
164 if (!strcmp("http.sslcainfo", var
))
165 return git_config_path(&ssl_cainfo
, var
, value
);
166 if (!strcmp("http.sslcertpasswordprotected", var
)) {
167 if (git_config_bool(var
, value
))
168 ssl_cert_password_required
= 1;
171 if (!strcmp("http.minsessions", var
)) {
172 min_curl_sessions
= git_config_int(var
, value
);
173 #ifndef USE_CURL_MULTI
174 if (min_curl_sessions
> 1)
175 min_curl_sessions
= 1;
179 #ifdef USE_CURL_MULTI
180 if (!strcmp("http.maxrequests", var
)) {
181 max_requests
= git_config_int(var
, value
);
185 if (!strcmp("http.lowspeedlimit", var
)) {
186 curl_low_speed_limit
= (long)git_config_int(var
, value
);
189 if (!strcmp("http.lowspeedtime", var
)) {
190 curl_low_speed_time
= (long)git_config_int(var
, value
);
194 if (!strcmp("http.noepsv", var
)) {
195 curl_ftp_no_epsv
= git_config_bool(var
, value
);
198 if (!strcmp("http.proxy", var
))
199 return git_config_string(&curl_http_proxy
, var
, value
);
201 if (!strcmp("http.postbuffer", var
)) {
202 http_post_buffer
= git_config_int(var
, value
);
203 if (http_post_buffer
< LARGE_PACKET_MAX
)
204 http_post_buffer
= LARGE_PACKET_MAX
;
208 /* Fall back on the default ones */
209 return git_default_config(var
, value
, cb
);
212 static void init_curl_http_auth(CURL
*result
)
215 struct strbuf up
= STRBUF_INIT
;
217 user_pass
= xstrdup(getpass("Password: "));
218 strbuf_addf(&up
, "%s:%s", user_name
, user_pass
);
219 curl_easy_setopt(result
, CURLOPT_USERPWD
,
220 strbuf_detach(&up
, NULL
));
224 static int has_cert_password(void)
226 if (ssl_cert_password
!= NULL
)
228 if (ssl_cert
== NULL
|| ssl_cert_password_required
!= 1)
230 /* Only prompt the user once. */
231 ssl_cert_password_required
= -1;
232 ssl_cert_password
= getpass("Certificate Password: ");
233 if (ssl_cert_password
!= NULL
) {
234 ssl_cert_password
= xstrdup(ssl_cert_password
);
240 static CURL
*get_curl_handle(void)
242 CURL
*result
= curl_easy_init();
244 if (!curl_ssl_verify
) {
245 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 0);
246 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 0);
248 /* Verify authenticity of the peer's certificate */
249 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 1);
250 /* The name in the cert must match whom we tried to connect */
251 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 2);
254 #if LIBCURL_VERSION_NUM >= 0x070907
255 curl_easy_setopt(result
, CURLOPT_NETRC
, CURL_NETRC_OPTIONAL
);
257 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
258 curl_easy_setopt(result
, CURLOPT_HTTPAUTH
, CURLAUTH_ANY
);
261 init_curl_http_auth(result
);
263 if (ssl_cert
!= NULL
)
264 curl_easy_setopt(result
, CURLOPT_SSLCERT
, ssl_cert
);
265 if (has_cert_password())
266 curl_easy_setopt(result
, CURLOPT_KEYPASSWD
, ssl_cert_password
);
267 #if LIBCURL_VERSION_NUM >= 0x070903
269 curl_easy_setopt(result
, CURLOPT_SSLKEY
, ssl_key
);
271 #if LIBCURL_VERSION_NUM >= 0x070908
272 if (ssl_capath
!= NULL
)
273 curl_easy_setopt(result
, CURLOPT_CAPATH
, ssl_capath
);
275 if (ssl_cainfo
!= NULL
)
276 curl_easy_setopt(result
, CURLOPT_CAINFO
, ssl_cainfo
);
277 curl_easy_setopt(result
, CURLOPT_FAILONERROR
, 1);
279 if (curl_low_speed_limit
> 0 && curl_low_speed_time
> 0) {
280 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_LIMIT
,
281 curl_low_speed_limit
);
282 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_TIME
,
283 curl_low_speed_time
);
286 curl_easy_setopt(result
, CURLOPT_FOLLOWLOCATION
, 1);
288 if (getenv("GIT_CURL_VERBOSE"))
289 curl_easy_setopt(result
, CURLOPT_VERBOSE
, 1);
291 curl_easy_setopt(result
, CURLOPT_USERAGENT
, GIT_USER_AGENT
);
293 if (curl_ftp_no_epsv
)
294 curl_easy_setopt(result
, CURLOPT_FTP_USE_EPSV
, 0);
297 curl_easy_setopt(result
, CURLOPT_PROXY
, curl_http_proxy
);
302 static void http_auth_init(const char *url
)
304 char *at
, *colon
, *cp
, *slash
;
307 cp
= strstr(url
, "://");
312 * Ok, the URL looks like "proto://something". Which one?
313 * "proto://<user>:<pass>@<host>/...",
314 * "proto://<user>@<host>/...", or just
315 * "proto://<host>/..."?
318 at
= strchr(cp
, '@');
319 colon
= strchr(cp
, ':');
320 slash
= strchrnul(cp
, '/');
321 if (!at
|| slash
<= at
)
322 return; /* No credentials */
323 if (!colon
|| at
<= colon
) {
326 user_name
= xmalloc(len
+ 1);
327 memcpy(user_name
, cp
, len
);
328 user_name
[len
] = '\0';
332 user_name
= xmalloc(len
+ 1);
333 memcpy(user_name
, cp
, len
);
334 user_name
[len
] = '\0';
335 len
= at
- (colon
+ 1);
336 user_pass
= xmalloc(len
+ 1);
337 memcpy(user_pass
, colon
+ 1, len
);
338 user_pass
[len
] = '\0';
342 static void set_from_env(const char **var
, const char *envname
)
344 const char *val
= getenv(envname
);
349 void http_init(struct remote
*remote
)
351 char *low_speed_limit
;
352 char *low_speed_time
;
356 git_config(http_options
, NULL
);
358 curl_global_init(CURL_GLOBAL_ALL
);
360 if (remote
&& remote
->http_proxy
)
361 curl_http_proxy
= xstrdup(remote
->http_proxy
);
363 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
364 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
366 #ifdef USE_CURL_MULTI
368 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
369 if (http_max_requests
!= NULL
)
370 max_requests
= atoi(http_max_requests
);
373 curlm
= curl_multi_init();
375 fprintf(stderr
, "Error creating curl multi handle.\n");
380 if (getenv("GIT_SSL_NO_VERIFY"))
383 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
384 #if LIBCURL_VERSION_NUM >= 0x070903
385 set_from_env(&ssl_key
, "GIT_SSL_KEY");
387 #if LIBCURL_VERSION_NUM >= 0x070908
388 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
390 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
392 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
393 if (low_speed_limit
!= NULL
)
394 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
395 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
396 if (low_speed_time
!= NULL
)
397 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
399 if (curl_ssl_verify
== -1)
402 curl_session_count
= 0;
403 #ifdef USE_CURL_MULTI
404 if (max_requests
< 1)
405 max_requests
= DEFAULT_MAX_REQUESTS
;
408 if (getenv("GIT_CURL_FTP_NO_EPSV"))
409 curl_ftp_no_epsv
= 1;
411 if (remote
&& remote
->url
&& remote
->url
[0]) {
412 http_auth_init(remote
->url
[0]);
413 if (!ssl_cert_password_required
&&
414 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
415 !prefixcmp(remote
->url
[0], "https://"))
416 ssl_cert_password_required
= 1;
419 #ifndef NO_CURL_EASY_DUPHANDLE
420 curl_default
= get_curl_handle();
424 void http_cleanup(void)
426 struct active_request_slot
*slot
= active_queue_head
;
428 while (slot
!= NULL
) {
429 struct active_request_slot
*next
= slot
->next
;
430 if (slot
->curl
!= NULL
) {
431 #ifdef USE_CURL_MULTI
432 curl_multi_remove_handle(curlm
, slot
->curl
);
434 curl_easy_cleanup(slot
->curl
);
439 active_queue_head
= NULL
;
441 #ifndef NO_CURL_EASY_DUPHANDLE
442 curl_easy_cleanup(curl_default
);
445 #ifdef USE_CURL_MULTI
446 curl_multi_cleanup(curlm
);
448 curl_global_cleanup();
450 curl_slist_free_all(pragma_header
);
451 pragma_header
= NULL
;
453 curl_slist_free_all(no_pragma_header
);
454 no_pragma_header
= NULL
;
456 if (curl_http_proxy
) {
457 free((void *)curl_http_proxy
);
458 curl_http_proxy
= NULL
;
461 if (ssl_cert_password
!= NULL
) {
462 memset(ssl_cert_password
, 0, strlen(ssl_cert_password
));
463 free(ssl_cert_password
);
464 ssl_cert_password
= NULL
;
466 ssl_cert_password_required
= 0;
469 struct active_request_slot
*get_active_slot(void)
471 struct active_request_slot
*slot
= active_queue_head
;
472 struct active_request_slot
*newslot
;
474 #ifdef USE_CURL_MULTI
477 /* Wait for a slot to open up if the queue is full */
478 while (active_requests
>= max_requests
) {
479 curl_multi_perform(curlm
, &num_transfers
);
480 if (num_transfers
< active_requests
)
481 process_curl_messages();
485 while (slot
!= NULL
&& slot
->in_use
)
489 newslot
= xmalloc(sizeof(*newslot
));
490 newslot
->curl
= NULL
;
492 newslot
->next
= NULL
;
494 slot
= active_queue_head
;
496 active_queue_head
= newslot
;
498 while (slot
->next
!= NULL
)
500 slot
->next
= newslot
;
505 if (slot
->curl
== NULL
) {
506 #ifdef NO_CURL_EASY_DUPHANDLE
507 slot
->curl
= get_curl_handle();
509 slot
->curl
= curl_easy_duphandle(curl_default
);
511 curl_session_count
++;
517 slot
->results
= NULL
;
518 slot
->finished
= NULL
;
519 slot
->callback_data
= NULL
;
520 slot
->callback_func
= NULL
;
521 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
522 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
523 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
524 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
525 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
526 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
527 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
532 int start_active_slot(struct active_request_slot
*slot
)
534 #ifdef USE_CURL_MULTI
535 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
538 if (curlm_result
!= CURLM_OK
&&
539 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
546 * We know there must be something to do, since we just added
549 curl_multi_perform(curlm
, &num_transfers
);
554 #ifdef USE_CURL_MULTI
558 struct fill_chain
*next
;
561 static struct fill_chain
*fill_cfg
;
563 void add_fill_function(void *data
, int (*fill
)(void *))
565 struct fill_chain
*new = xmalloc(sizeof(*new));
566 struct fill_chain
**linkp
= &fill_cfg
;
571 linkp
= &(*linkp
)->next
;
575 void fill_active_slots(void)
577 struct active_request_slot
*slot
= active_queue_head
;
579 while (active_requests
< max_requests
) {
580 struct fill_chain
*fill
;
581 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
582 if (fill
->fill(fill
->data
))
589 while (slot
!= NULL
) {
590 if (!slot
->in_use
&& slot
->curl
!= NULL
591 && curl_session_count
> min_curl_sessions
) {
592 curl_easy_cleanup(slot
->curl
);
594 curl_session_count
--;
600 void step_active_slots(void)
603 CURLMcode curlm_result
;
606 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
607 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
608 if (num_transfers
< active_requests
) {
609 process_curl_messages();
615 void run_active_slot(struct active_request_slot
*slot
)
617 #ifdef USE_CURL_MULTI
624 struct timeval select_timeout
;
627 slot
->finished
= &finished
;
632 if (!data_received
&& slot
->local
!= NULL
) {
633 current_pos
= ftell(slot
->local
);
634 if (current_pos
> last_pos
)
636 last_pos
= current_pos
;
639 if (slot
->in_use
&& !data_received
) {
644 select_timeout
.tv_sec
= 0;
645 select_timeout
.tv_usec
= 50000;
646 select(max_fd
, &readfds
, &writefds
,
647 &excfds
, &select_timeout
);
651 while (slot
->in_use
) {
652 slot
->curl_result
= curl_easy_perform(slot
->curl
);
653 finish_active_slot(slot
);
658 static void closedown_active_slot(struct active_request_slot
*slot
)
664 static void release_active_slot(struct active_request_slot
*slot
)
666 closedown_active_slot(slot
);
667 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
668 #ifdef USE_CURL_MULTI
669 curl_multi_remove_handle(curlm
, slot
->curl
);
671 curl_easy_cleanup(slot
->curl
);
673 curl_session_count
--;
675 #ifdef USE_CURL_MULTI
680 void finish_active_slot(struct active_request_slot
*slot
)
682 closedown_active_slot(slot
);
683 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CODE
, &slot
->http_code
);
685 if (slot
->finished
!= NULL
)
686 (*slot
->finished
) = 1;
688 /* Store slot results so they can be read after the slot is reused */
689 if (slot
->results
!= NULL
) {
690 slot
->results
->curl_result
= slot
->curl_result
;
691 slot
->results
->http_code
= slot
->http_code
;
694 /* Run callback if appropriate */
695 if (slot
->callback_func
!= NULL
)
696 slot
->callback_func(slot
->callback_data
);
699 void finish_all_active_slots(void)
701 struct active_request_slot
*slot
= active_queue_head
;
705 run_active_slot(slot
);
706 slot
= active_queue_head
;
712 /* Helpers for modifying and creating URLs */
713 static inline int needs_quote(int ch
)
715 if (((ch
>= 'A') && (ch
<= 'Z'))
716 || ((ch
>= 'a') && (ch
<= 'z'))
717 || ((ch
>= '0') && (ch
<= '9'))
725 static inline int hex(int v
)
733 static void end_url_with_slash(struct strbuf
*buf
, const char *url
)
735 strbuf_addstr(buf
, url
);
736 if (buf
->len
&& buf
->buf
[buf
->len
- 1] != '/')
737 strbuf_addstr(buf
, "/");
740 static char *quote_ref_url(const char *base
, const char *ref
)
742 struct strbuf buf
= STRBUF_INIT
;
746 end_url_with_slash(&buf
, base
);
748 for (cp
= ref
; (ch
= *cp
) != 0; cp
++)
750 strbuf_addf(&buf
, "%%%02x", ch
);
752 strbuf_addch(&buf
, *cp
);
754 return strbuf_detach(&buf
, NULL
);
757 void append_remote_object_url(struct strbuf
*buf
, const char *url
,
759 int only_two_digit_prefix
)
761 end_url_with_slash(buf
, url
);
763 strbuf_addf(buf
, "objects/%.*s/", 2, hex
);
764 if (!only_two_digit_prefix
)
765 strbuf_addf(buf
, "%s", hex
+2);
768 char *get_remote_object_url(const char *url
, const char *hex
,
769 int only_two_digit_prefix
)
771 struct strbuf buf
= STRBUF_INIT
;
772 append_remote_object_url(&buf
, url
, hex
, only_two_digit_prefix
);
773 return strbuf_detach(&buf
, NULL
);
776 /* http_request() targets */
777 #define HTTP_REQUEST_STRBUF 0
778 #define HTTP_REQUEST_FILE 1
780 static int http_request(const char *url
, void *result
, int target
, int options
)
782 struct active_request_slot
*slot
;
783 struct slot_results results
;
784 struct curl_slist
*headers
= NULL
;
785 struct strbuf buf
= STRBUF_INIT
;
788 slot
= get_active_slot();
789 slot
->results
= &results
;
790 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
792 if (result
== NULL
) {
793 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 1);
795 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
796 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, result
);
798 if (target
== HTTP_REQUEST_FILE
) {
799 long posn
= ftell(result
);
800 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
803 strbuf_addf(&buf
, "Range: bytes=%ld-", posn
);
804 headers
= curl_slist_append(headers
, buf
.buf
);
807 slot
->local
= result
;
809 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
813 strbuf_addstr(&buf
, "Pragma:");
814 if (options
& HTTP_NO_CACHE
)
815 strbuf_addstr(&buf
, " no-cache");
817 headers
= curl_slist_append(headers
, buf
.buf
);
819 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, url
);
820 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
822 if (start_active_slot(slot
)) {
823 run_active_slot(slot
);
824 if (results
.curl_result
== CURLE_OK
)
826 else if (missing_target(&results
))
827 ret
= HTTP_MISSING_TARGET
;
831 error("Unable to start HTTP request for %s", url
);
832 ret
= HTTP_START_FAILED
;
836 curl_slist_free_all(headers
);
837 strbuf_release(&buf
);
842 int http_get_strbuf(const char *url
, struct strbuf
*result
, int options
)
844 return http_request(url
, result
, HTTP_REQUEST_STRBUF
, options
);
848 * Downloads an url and stores the result in the given file.
850 * If a previous interrupted download is detected (i.e. a previous temporary
851 * file is still around) the download is resumed.
853 static int http_get_file(const char *url
, const char *filename
, int options
)
856 struct strbuf tmpfile
= STRBUF_INIT
;
859 strbuf_addf(&tmpfile
, "%s.temp", filename
);
860 result
= fopen(tmpfile
.buf
, "a");
862 error("Unable to open local file %s", tmpfile
.buf
);
867 ret
= http_request(url
, result
, HTTP_REQUEST_FILE
, options
);
870 if ((ret
== HTTP_OK
) && move_temp_to_file(tmpfile
.buf
, filename
))
873 strbuf_release(&tmpfile
);
877 int http_error(const char *url
, int ret
)
879 /* http_request has already handled HTTP_START_FAILED. */
880 if (ret
!= HTTP_START_FAILED
)
881 error("%s while accessing %s\n", curl_errorstr
, url
);
886 int http_fetch_ref(const char *base
, struct ref
*ref
)
889 struct strbuf buffer
= STRBUF_INIT
;
892 url
= quote_ref_url(base
, ref
->name
);
893 if (http_get_strbuf(url
, &buffer
, HTTP_NO_CACHE
) == HTTP_OK
) {
894 strbuf_rtrim(&buffer
);
895 if (buffer
.len
== 40)
896 ret
= get_sha1_hex(buffer
.buf
, ref
->old_sha1
);
897 else if (!prefixcmp(buffer
.buf
, "ref: ")) {
898 ref
->symref
= xstrdup(buffer
.buf
+ 5);
903 strbuf_release(&buffer
);
908 /* Helpers for fetching packs */
909 static int fetch_pack_index(unsigned char *sha1
, const char *base_url
)
912 char *hex
= xstrdup(sha1_to_hex(sha1
));
915 struct strbuf buf
= STRBUF_INIT
;
917 if (has_pack_index(sha1
)) {
923 fprintf(stderr
, "Getting index for pack %s\n", hex
);
925 end_url_with_slash(&buf
, base_url
);
926 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", hex
);
927 url
= strbuf_detach(&buf
, NULL
);
929 filename
= sha1_pack_index_name(sha1
);
930 if (http_get_file(url
, filename
, 0) != HTTP_OK
)
931 ret
= error("Unable to get pack index %s\n", url
);
939 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
940 unsigned char *sha1
, const char *base_url
)
942 struct packed_git
*new_pack
;
944 if (fetch_pack_index(sha1
, base_url
))
947 new_pack
= parse_pack_index(sha1
);
949 return -1; /* parse_pack_index() already issued error message */
950 new_pack
->next
= *packs_head
;
951 *packs_head
= new_pack
;
955 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
959 struct strbuf buf
= STRBUF_INIT
;
960 unsigned char sha1
[20];
962 end_url_with_slash(&buf
, base_url
);
963 strbuf_addstr(&buf
, "objects/info/packs");
964 url
= strbuf_detach(&buf
, NULL
);
966 ret
= http_get_strbuf(url
, &buf
, HTTP_NO_CACHE
);
971 while (i
< buf
.len
) {
975 if (i
+ 52 <= buf
.len
&&
976 !prefixcmp(data
+ i
, " pack-") &&
977 !prefixcmp(data
+ i
+ 46, ".pack\n")) {
978 get_sha1_hex(data
+ i
+ 6, sha1
);
979 fetch_and_setup_pack_index(packs_head
, sha1
,
985 while (i
< buf
.len
&& data
[i
] != '\n')
996 void release_http_pack_request(struct http_pack_request
*preq
)
998 if (preq
->packfile
!= NULL
) {
999 fclose(preq
->packfile
);
1000 preq
->packfile
= NULL
;
1001 preq
->slot
->local
= NULL
;
1003 if (preq
->range_header
!= NULL
) {
1004 curl_slist_free_all(preq
->range_header
);
1005 preq
->range_header
= NULL
;
1011 int finish_http_pack_request(struct http_pack_request
*preq
)
1014 struct packed_git
**lst
;
1016 preq
->target
->pack_size
= ftell(preq
->packfile
);
1018 if (preq
->packfile
!= NULL
) {
1019 fclose(preq
->packfile
);
1020 preq
->packfile
= NULL
;
1021 preq
->slot
->local
= NULL
;
1024 ret
= move_temp_to_file(preq
->tmpfile
, preq
->filename
);
1029 while (*lst
!= preq
->target
)
1030 lst
= &((*lst
)->next
);
1031 *lst
= (*lst
)->next
;
1033 if (verify_pack(preq
->target
))
1035 install_packed_git(preq
->target
);
1040 struct http_pack_request
*new_http_pack_request(
1041 struct packed_git
*target
, const char *base_url
)
1045 char range
[RANGE_HEADER_SIZE
];
1046 struct strbuf buf
= STRBUF_INIT
;
1047 struct http_pack_request
*preq
;
1049 preq
= xmalloc(sizeof(*preq
));
1050 preq
->target
= target
;
1051 preq
->range_header
= NULL
;
1053 end_url_with_slash(&buf
, base_url
);
1054 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1055 sha1_to_hex(target
->sha1
));
1056 preq
->url
= strbuf_detach(&buf
, NULL
);
1058 filename
= sha1_pack_name(target
->sha1
);
1059 snprintf(preq
->filename
, sizeof(preq
->filename
), "%s", filename
);
1060 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp", filename
);
1061 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1062 if (!preq
->packfile
) {
1063 error("Unable to open local file %s for pack",
1068 preq
->slot
= get_active_slot();
1069 preq
->slot
->local
= preq
->packfile
;
1070 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1071 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1072 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1073 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1077 * If there is data present from a previous transfer attempt,
1078 * resume where it left off
1080 prev_posn
= ftell(preq
->packfile
);
1082 if (http_is_verbose
)
1084 "Resuming fetch of pack %s at byte %ld\n",
1085 sha1_to_hex(target
->sha1
), prev_posn
);
1086 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1087 preq
->range_header
= curl_slist_append(NULL
, range
);
1088 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1089 preq
->range_header
);
1101 /* Helpers for fetching objects (loose) */
1102 static size_t fwrite_sha1_file(void *ptr
, size_t eltsize
, size_t nmemb
,
1105 unsigned char expn
[4096];
1106 size_t size
= eltsize
* nmemb
;
1108 struct http_object_request
*freq
=
1109 (struct http_object_request
*)data
;
1111 ssize_t retval
= xwrite(freq
->localfile
,
1112 (char *) ptr
+ posn
, size
- posn
);
1116 } while (posn
< size
);
1118 freq
->stream
.avail_in
= size
;
1119 freq
->stream
.next_in
= ptr
;
1121 freq
->stream
.next_out
= expn
;
1122 freq
->stream
.avail_out
= sizeof(expn
);
1123 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1124 git_SHA1_Update(&freq
->c
, expn
,
1125 sizeof(expn
) - freq
->stream
.avail_out
);
1126 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1131 struct http_object_request
*new_http_object_request(const char *base_url
,
1132 unsigned char *sha1
)
1134 char *hex
= sha1_to_hex(sha1
);
1136 char prevfile
[PATH_MAX
];
1138 unsigned char prev_buf
[PREV_BUF_SIZE
];
1139 ssize_t prev_read
= 0;
1141 char range
[RANGE_HEADER_SIZE
];
1142 struct curl_slist
*range_header
= NULL
;
1143 struct http_object_request
*freq
;
1145 freq
= xmalloc(sizeof(*freq
));
1146 hashcpy(freq
->sha1
, sha1
);
1147 freq
->localfile
= -1;
1149 filename
= sha1_file_name(sha1
);
1150 snprintf(freq
->filename
, sizeof(freq
->filename
), "%s", filename
);
1151 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1152 "%s.temp", filename
);
1154 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1155 unlink_or_warn(prevfile
);
1156 rename(freq
->tmpfile
, prevfile
);
1157 unlink_or_warn(freq
->tmpfile
);
1159 if (freq
->localfile
!= -1)
1160 error("fd leakage in start: %d", freq
->localfile
);
1161 freq
->localfile
= open(freq
->tmpfile
,
1162 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1164 * This could have failed due to the "lazy directory creation";
1165 * try to mkdir the last path component.
1167 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1168 char *dir
= strrchr(freq
->tmpfile
, '/');
1171 mkdir(freq
->tmpfile
, 0777);
1174 freq
->localfile
= open(freq
->tmpfile
,
1175 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1178 if (freq
->localfile
< 0) {
1179 error("Couldn't create temporary file %s for %s: %s",
1180 freq
->tmpfile
, freq
->filename
, strerror(errno
));
1184 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1186 git_inflate_init(&freq
->stream
);
1188 git_SHA1_Init(&freq
->c
);
1190 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1193 * If a previous temp file is present, process what was already
1196 prevlocal
= open(prevfile
, O_RDONLY
);
1197 if (prevlocal
!= -1) {
1199 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1201 if (fwrite_sha1_file(prev_buf
,
1204 freq
) == prev_read
) {
1205 prev_posn
+= prev_read
;
1210 } while (prev_read
> 0);
1213 unlink_or_warn(prevfile
);
1216 * Reset inflate/SHA1 if there was an error reading the previous temp
1217 * file; also rewind to the beginning of the local file.
1219 if (prev_read
== -1) {
1220 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1221 git_inflate_init(&freq
->stream
);
1222 git_SHA1_Init(&freq
->c
);
1225 lseek(freq
->localfile
, 0, SEEK_SET
);
1226 if (ftruncate(freq
->localfile
, 0) < 0) {
1227 error("Couldn't truncate temporary file %s for %s: %s",
1228 freq
->tmpfile
, freq
->filename
, strerror(errno
));
1234 freq
->slot
= get_active_slot();
1236 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1237 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1238 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1239 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1240 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1243 * If we have successfully processed data from a previous fetch
1244 * attempt, only fetch the data we don't already have.
1247 if (http_is_verbose
)
1249 "Resuming fetch of object %s at byte %ld\n",
1251 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1252 range_header
= curl_slist_append(range_header
, range
);
1253 curl_easy_setopt(freq
->slot
->curl
,
1254 CURLOPT_HTTPHEADER
, range_header
);
1266 void process_http_object_request(struct http_object_request
*freq
)
1268 if (freq
->slot
== NULL
)
1270 freq
->curl_result
= freq
->slot
->curl_result
;
1271 freq
->http_code
= freq
->slot
->http_code
;
1275 int finish_http_object_request(struct http_object_request
*freq
)
1279 close(freq
->localfile
);
1280 freq
->localfile
= -1;
1282 process_http_object_request(freq
);
1284 if (freq
->http_code
== 416) {
1285 warning("requested range invalid; we may already have all the data.");
1286 } else if (freq
->curl_result
!= CURLE_OK
) {
1287 if (stat(freq
->tmpfile
, &st
) == 0)
1288 if (st
.st_size
== 0)
1289 unlink_or_warn(freq
->tmpfile
);
1293 git_inflate_end(&freq
->stream
);
1294 git_SHA1_Final(freq
->real_sha1
, &freq
->c
);
1295 if (freq
->zret
!= Z_STREAM_END
) {
1296 unlink_or_warn(freq
->tmpfile
);
1299 if (hashcmp(freq
->sha1
, freq
->real_sha1
)) {
1300 unlink_or_warn(freq
->tmpfile
);
1304 move_temp_to_file(freq
->tmpfile
, freq
->filename
);
1306 return freq
->rename
;
1309 void abort_http_object_request(struct http_object_request
*freq
)
1311 unlink_or_warn(freq
->tmpfile
);
1313 release_http_object_request(freq
);
1316 void release_http_object_request(struct http_object_request
*freq
)
1318 if (freq
->localfile
!= -1) {
1319 close(freq
->localfile
);
1320 freq
->localfile
= -1;
1322 if (freq
->url
!= NULL
) {
1326 if (freq
->slot
!= NULL
) {
1327 freq
->slot
->callback_func
= NULL
;
1328 freq
->slot
->callback_data
= NULL
;
1329 release_active_slot(freq
->slot
);