4 #include "run-command.h"
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
;
44 static const char *user_agent
;
46 #if LIBCURL_VERSION_NUM >= 0x071700
47 /* Use CURLOPT_KEYPASSWD as is */
48 #elif LIBCURL_VERSION_NUM >= 0x070903
49 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
51 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
54 static char *ssl_cert_password
;
55 static int ssl_cert_password_required
;
57 static struct curl_slist
*pragma_header
;
58 static struct curl_slist
*no_pragma_header
;
60 static struct active_request_slot
*active_queue_head
;
62 size_t fread_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
64 size_t size
= eltsize
* nmemb
;
65 struct buffer
*buffer
= buffer_
;
67 if (size
> buffer
->buf
.len
- buffer
->posn
)
68 size
= buffer
->buf
.len
- buffer
->posn
;
69 memcpy(ptr
, buffer
->buf
.buf
+ buffer
->posn
, size
);
76 curlioerr
ioctl_buffer(CURL
*handle
, int cmd
, void *clientp
)
78 struct buffer
*buffer
= clientp
;
84 case CURLIOCMD_RESTARTREAD
:
89 return CURLIOE_UNKNOWNCMD
;
94 size_t fwrite_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
96 size_t size
= eltsize
* nmemb
;
97 struct strbuf
*buffer
= buffer_
;
99 strbuf_add(buffer
, ptr
, size
);
103 size_t fwrite_null(char *ptr
, size_t eltsize
, size_t nmemb
, void *strbuf
)
105 return eltsize
* nmemb
;
108 #ifdef USE_CURL_MULTI
109 static void process_curl_messages(void)
112 struct active_request_slot
*slot
;
113 CURLMsg
*curl_message
= curl_multi_info_read(curlm
, &num_messages
);
115 while (curl_message
!= NULL
) {
116 if (curl_message
->msg
== CURLMSG_DONE
) {
117 int curl_result
= curl_message
->data
.result
;
118 slot
= active_queue_head
;
119 while (slot
!= NULL
&&
120 slot
->curl
!= curl_message
->easy_handle
)
123 curl_multi_remove_handle(curlm
, slot
->curl
);
124 slot
->curl_result
= curl_result
;
125 finish_active_slot(slot
);
127 fprintf(stderr
, "Received DONE message for unknown request!\n");
130 fprintf(stderr
, "Unknown CURL message received: %d\n",
131 (int)curl_message
->msg
);
133 curl_message
= curl_multi_info_read(curlm
, &num_messages
);
138 static int http_options(const char *var
, const char *value
, void *cb
)
140 if (!strcmp("http.sslverify", var
)) {
141 curl_ssl_verify
= git_config_bool(var
, value
);
144 if (!strcmp("http.sslcert", var
))
145 return git_config_string(&ssl_cert
, var
, value
);
146 #if LIBCURL_VERSION_NUM >= 0x070903
147 if (!strcmp("http.sslkey", var
))
148 return git_config_string(&ssl_key
, var
, value
);
150 #if LIBCURL_VERSION_NUM >= 0x070908
151 if (!strcmp("http.sslcapath", var
))
152 return git_config_string(&ssl_capath
, var
, value
);
154 if (!strcmp("http.sslcainfo", var
))
155 return git_config_string(&ssl_cainfo
, var
, value
);
156 if (!strcmp("http.sslcertpasswordprotected", var
)) {
157 if (git_config_bool(var
, value
))
158 ssl_cert_password_required
= 1;
161 if (!strcmp("http.minsessions", var
)) {
162 min_curl_sessions
= git_config_int(var
, value
);
163 #ifndef USE_CURL_MULTI
164 if (min_curl_sessions
> 1)
165 min_curl_sessions
= 1;
169 #ifdef USE_CURL_MULTI
170 if (!strcmp("http.maxrequests", var
)) {
171 max_requests
= git_config_int(var
, value
);
175 if (!strcmp("http.lowspeedlimit", var
)) {
176 curl_low_speed_limit
= (long)git_config_int(var
, value
);
179 if (!strcmp("http.lowspeedtime", var
)) {
180 curl_low_speed_time
= (long)git_config_int(var
, value
);
184 if (!strcmp("http.noepsv", var
)) {
185 curl_ftp_no_epsv
= git_config_bool(var
, value
);
188 if (!strcmp("http.proxy", var
))
189 return git_config_string(&curl_http_proxy
, var
, value
);
191 if (!strcmp("http.postbuffer", var
)) {
192 http_post_buffer
= git_config_int(var
, value
);
193 if (http_post_buffer
< LARGE_PACKET_MAX
)
194 http_post_buffer
= LARGE_PACKET_MAX
;
198 if (!strcmp("http.useragent", var
))
199 return git_config_string(&user_agent
, var
, value
);
201 /* Fall back on the default ones */
202 return git_default_config(var
, value
, cb
);
205 static void init_curl_http_auth(CURL
*result
)
208 struct strbuf up
= STRBUF_INIT
;
210 user_pass
= xstrdup(git_getpass("Password: "));
211 strbuf_addf(&up
, "%s:%s", user_name
, user_pass
);
212 curl_easy_setopt(result
, CURLOPT_USERPWD
,
213 strbuf_detach(&up
, NULL
));
217 static int has_cert_password(void)
219 if (ssl_cert_password
!= NULL
)
221 if (ssl_cert
== NULL
|| ssl_cert_password_required
!= 1)
223 /* Only prompt the user once. */
224 ssl_cert_password_required
= -1;
225 ssl_cert_password
= git_getpass("Certificate Password: ");
226 if (ssl_cert_password
!= NULL
) {
227 ssl_cert_password
= xstrdup(ssl_cert_password
);
233 static CURL
*get_curl_handle(void)
235 CURL
*result
= curl_easy_init();
237 if (!curl_ssl_verify
) {
238 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 0);
239 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 0);
241 /* Verify authenticity of the peer's certificate */
242 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 1);
243 /* The name in the cert must match whom we tried to connect */
244 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 2);
247 #if LIBCURL_VERSION_NUM >= 0x070907
248 curl_easy_setopt(result
, CURLOPT_NETRC
, CURL_NETRC_OPTIONAL
);
250 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
251 curl_easy_setopt(result
, CURLOPT_HTTPAUTH
, CURLAUTH_ANY
);
254 init_curl_http_auth(result
);
256 if (ssl_cert
!= NULL
)
257 curl_easy_setopt(result
, CURLOPT_SSLCERT
, ssl_cert
);
258 if (has_cert_password())
259 curl_easy_setopt(result
, CURLOPT_KEYPASSWD
, ssl_cert_password
);
260 #if LIBCURL_VERSION_NUM >= 0x070903
262 curl_easy_setopt(result
, CURLOPT_SSLKEY
, ssl_key
);
264 #if LIBCURL_VERSION_NUM >= 0x070908
265 if (ssl_capath
!= NULL
)
266 curl_easy_setopt(result
, CURLOPT_CAPATH
, ssl_capath
);
268 if (ssl_cainfo
!= NULL
)
269 curl_easy_setopt(result
, CURLOPT_CAINFO
, ssl_cainfo
);
270 curl_easy_setopt(result
, CURLOPT_FAILONERROR
, 1);
272 if (curl_low_speed_limit
> 0 && curl_low_speed_time
> 0) {
273 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_LIMIT
,
274 curl_low_speed_limit
);
275 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_TIME
,
276 curl_low_speed_time
);
279 curl_easy_setopt(result
, CURLOPT_FOLLOWLOCATION
, 1);
280 #if LIBCURL_VERSION_NUM >= 0x071301
281 curl_easy_setopt(result
, CURLOPT_POSTREDIR
, CURL_REDIR_POST_ALL
);
282 #elif LIBCURL_VERSION_NUM >= 0x071101
283 curl_easy_setopt(result
, CURLOPT_POST301
, 1);
286 if (getenv("GIT_CURL_VERBOSE"))
287 curl_easy_setopt(result
, CURLOPT_VERBOSE
, 1);
289 curl_easy_setopt(result
, CURLOPT_USERAGENT
,
290 user_agent
? user_agent
: GIT_HTTP_USER_AGENT
);
292 if (curl_ftp_no_epsv
)
293 curl_easy_setopt(result
, CURLOPT_FTP_USE_EPSV
, 0);
296 curl_easy_setopt(result
, CURLOPT_PROXY
, curl_http_proxy
);
301 static void http_auth_init(const char *url
)
303 char *at
, *colon
, *cp
, *slash
, *decoded
;
306 cp
= strstr(url
, "://");
311 * Ok, the URL looks like "proto://something". Which one?
312 * "proto://<user>:<pass>@<host>/...",
313 * "proto://<user>@<host>/...", or just
314 * "proto://<host>/..."?
317 at
= strchr(cp
, '@');
318 colon
= strchr(cp
, ':');
319 slash
= strchrnul(cp
, '/');
320 if (!at
|| slash
<= at
)
321 return; /* No credentials */
322 if (!colon
|| at
<= colon
) {
325 user_name
= xmalloc(len
+ 1);
326 memcpy(user_name
, cp
, len
);
327 user_name
[len
] = '\0';
328 decoded
= url_decode(user_name
);
334 user_name
= xmalloc(len
+ 1);
335 memcpy(user_name
, cp
, len
);
336 user_name
[len
] = '\0';
337 decoded
= url_decode(user_name
);
340 len
= at
- (colon
+ 1);
341 user_pass
= xmalloc(len
+ 1);
342 memcpy(user_pass
, colon
+ 1, len
);
343 user_pass
[len
] = '\0';
344 decoded
= url_decode(user_pass
);
350 static void set_from_env(const char **var
, const char *envname
)
352 const char *val
= getenv(envname
);
357 void http_init(struct remote
*remote
)
359 char *low_speed_limit
;
360 char *low_speed_time
;
364 git_config(http_options
, NULL
);
366 curl_global_init(CURL_GLOBAL_ALL
);
368 if (remote
&& remote
->http_proxy
)
369 curl_http_proxy
= xstrdup(remote
->http_proxy
);
371 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
372 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
374 #ifdef USE_CURL_MULTI
376 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
377 if (http_max_requests
!= NULL
)
378 max_requests
= atoi(http_max_requests
);
381 curlm
= curl_multi_init();
383 fprintf(stderr
, "Error creating curl multi handle.\n");
388 if (getenv("GIT_SSL_NO_VERIFY"))
391 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
392 #if LIBCURL_VERSION_NUM >= 0x070903
393 set_from_env(&ssl_key
, "GIT_SSL_KEY");
395 #if LIBCURL_VERSION_NUM >= 0x070908
396 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
398 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
400 set_from_env(&user_agent
, "GIT_HTTP_USER_AGENT");
402 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
403 if (low_speed_limit
!= NULL
)
404 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
405 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
406 if (low_speed_time
!= NULL
)
407 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
409 if (curl_ssl_verify
== -1)
412 curl_session_count
= 0;
413 #ifdef USE_CURL_MULTI
414 if (max_requests
< 1)
415 max_requests
= DEFAULT_MAX_REQUESTS
;
418 if (getenv("GIT_CURL_FTP_NO_EPSV"))
419 curl_ftp_no_epsv
= 1;
421 if (remote
&& remote
->url
&& remote
->url
[0]) {
422 http_auth_init(remote
->url
[0]);
423 if (!ssl_cert_password_required
&&
424 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
425 !prefixcmp(remote
->url
[0], "https://"))
426 ssl_cert_password_required
= 1;
429 #ifndef NO_CURL_EASY_DUPHANDLE
430 curl_default
= get_curl_handle();
434 void http_cleanup(void)
436 struct active_request_slot
*slot
= active_queue_head
;
438 while (slot
!= NULL
) {
439 struct active_request_slot
*next
= slot
->next
;
440 if (slot
->curl
!= NULL
) {
441 #ifdef USE_CURL_MULTI
442 curl_multi_remove_handle(curlm
, slot
->curl
);
444 curl_easy_cleanup(slot
->curl
);
449 active_queue_head
= NULL
;
451 #ifndef NO_CURL_EASY_DUPHANDLE
452 curl_easy_cleanup(curl_default
);
455 #ifdef USE_CURL_MULTI
456 curl_multi_cleanup(curlm
);
458 curl_global_cleanup();
460 curl_slist_free_all(pragma_header
);
461 pragma_header
= NULL
;
463 curl_slist_free_all(no_pragma_header
);
464 no_pragma_header
= NULL
;
466 if (curl_http_proxy
) {
467 free((void *)curl_http_proxy
);
468 curl_http_proxy
= NULL
;
471 if (ssl_cert_password
!= NULL
) {
472 memset(ssl_cert_password
, 0, strlen(ssl_cert_password
));
473 free(ssl_cert_password
);
474 ssl_cert_password
= NULL
;
476 ssl_cert_password_required
= 0;
479 struct active_request_slot
*get_active_slot(void)
481 struct active_request_slot
*slot
= active_queue_head
;
482 struct active_request_slot
*newslot
;
484 #ifdef USE_CURL_MULTI
487 /* Wait for a slot to open up if the queue is full */
488 while (active_requests
>= max_requests
) {
489 curl_multi_perform(curlm
, &num_transfers
);
490 if (num_transfers
< active_requests
)
491 process_curl_messages();
495 while (slot
!= NULL
&& slot
->in_use
)
499 newslot
= xmalloc(sizeof(*newslot
));
500 newslot
->curl
= NULL
;
502 newslot
->next
= NULL
;
504 slot
= active_queue_head
;
506 active_queue_head
= newslot
;
508 while (slot
->next
!= NULL
)
510 slot
->next
= newslot
;
515 if (slot
->curl
== NULL
) {
516 #ifdef NO_CURL_EASY_DUPHANDLE
517 slot
->curl
= get_curl_handle();
519 slot
->curl
= curl_easy_duphandle(curl_default
);
521 curl_session_count
++;
526 slot
->results
= NULL
;
527 slot
->finished
= NULL
;
528 slot
->callback_data
= NULL
;
529 slot
->callback_func
= NULL
;
530 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
531 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
532 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
533 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
534 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
535 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, NULL
);
536 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
537 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
542 int start_active_slot(struct active_request_slot
*slot
)
544 #ifdef USE_CURL_MULTI
545 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
548 if (curlm_result
!= CURLM_OK
&&
549 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
556 * We know there must be something to do, since we just added
559 curl_multi_perform(curlm
, &num_transfers
);
564 #ifdef USE_CURL_MULTI
568 struct fill_chain
*next
;
571 static struct fill_chain
*fill_cfg
;
573 void add_fill_function(void *data
, int (*fill
)(void *))
575 struct fill_chain
*new = xmalloc(sizeof(*new));
576 struct fill_chain
**linkp
= &fill_cfg
;
581 linkp
= &(*linkp
)->next
;
585 void fill_active_slots(void)
587 struct active_request_slot
*slot
= active_queue_head
;
589 while (active_requests
< max_requests
) {
590 struct fill_chain
*fill
;
591 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
592 if (fill
->fill(fill
->data
))
599 while (slot
!= NULL
) {
600 if (!slot
->in_use
&& slot
->curl
!= NULL
601 && curl_session_count
> min_curl_sessions
) {
602 curl_easy_cleanup(slot
->curl
);
604 curl_session_count
--;
610 void step_active_slots(void)
613 CURLMcode curlm_result
;
616 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
617 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
618 if (num_transfers
< active_requests
) {
619 process_curl_messages();
625 void run_active_slot(struct active_request_slot
*slot
)
627 #ifdef USE_CURL_MULTI
632 struct timeval select_timeout
;
635 slot
->finished
= &finished
;
640 #if LIBCURL_VERSION_NUM >= 0x070f04
642 curl_multi_timeout(curlm
, &curl_timeout
);
643 if (curl_timeout
== 0) {
645 } else if (curl_timeout
== -1) {
646 select_timeout
.tv_sec
= 0;
647 select_timeout
.tv_usec
= 50000;
649 select_timeout
.tv_sec
= curl_timeout
/ 1000;
650 select_timeout
.tv_usec
= (curl_timeout
% 1000) * 1000;
653 select_timeout
.tv_sec
= 0;
654 select_timeout
.tv_usec
= 50000;
661 curl_multi_fdset(curlm
, &readfds
, &writefds
, &excfds
, &max_fd
);
663 select(max_fd
+1, &readfds
, &writefds
, &excfds
, &select_timeout
);
667 while (slot
->in_use
) {
668 slot
->curl_result
= curl_easy_perform(slot
->curl
);
669 finish_active_slot(slot
);
674 static void closedown_active_slot(struct active_request_slot
*slot
)
680 static void release_active_slot(struct active_request_slot
*slot
)
682 closedown_active_slot(slot
);
683 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
684 #ifdef USE_CURL_MULTI
685 curl_multi_remove_handle(curlm
, slot
->curl
);
687 curl_easy_cleanup(slot
->curl
);
689 curl_session_count
--;
691 #ifdef USE_CURL_MULTI
696 void finish_active_slot(struct active_request_slot
*slot
)
698 closedown_active_slot(slot
);
699 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CODE
, &slot
->http_code
);
701 if (slot
->finished
!= NULL
)
702 (*slot
->finished
) = 1;
704 /* Store slot results so they can be read after the slot is reused */
705 if (slot
->results
!= NULL
) {
706 slot
->results
->curl_result
= slot
->curl_result
;
707 slot
->results
->http_code
= slot
->http_code
;
710 /* Run callback if appropriate */
711 if (slot
->callback_func
!= NULL
)
712 slot
->callback_func(slot
->callback_data
);
715 void finish_all_active_slots(void)
717 struct active_request_slot
*slot
= active_queue_head
;
721 run_active_slot(slot
);
722 slot
= active_queue_head
;
728 /* Helpers for modifying and creating URLs */
729 static inline int needs_quote(int ch
)
731 if (((ch
>= 'A') && (ch
<= 'Z'))
732 || ((ch
>= 'a') && (ch
<= 'z'))
733 || ((ch
>= '0') && (ch
<= '9'))
741 static inline int hex(int v
)
749 static char *quote_ref_url(const char *base
, const char *ref
)
751 struct strbuf buf
= STRBUF_INIT
;
755 end_url_with_slash(&buf
, base
);
757 for (cp
= ref
; (ch
= *cp
) != 0; cp
++)
759 strbuf_addf(&buf
, "%%%02x", ch
);
761 strbuf_addch(&buf
, *cp
);
763 return strbuf_detach(&buf
, NULL
);
766 void append_remote_object_url(struct strbuf
*buf
, const char *url
,
768 int only_two_digit_prefix
)
770 end_url_with_slash(buf
, url
);
772 strbuf_addf(buf
, "objects/%.*s/", 2, hex
);
773 if (!only_two_digit_prefix
)
774 strbuf_addf(buf
, "%s", hex
+2);
777 char *get_remote_object_url(const char *url
, const char *hex
,
778 int only_two_digit_prefix
)
780 struct strbuf buf
= STRBUF_INIT
;
781 append_remote_object_url(&buf
, url
, hex
, only_two_digit_prefix
);
782 return strbuf_detach(&buf
, NULL
);
785 /* http_request() targets */
786 #define HTTP_REQUEST_STRBUF 0
787 #define HTTP_REQUEST_FILE 1
789 static int http_request(const char *url
, void *result
, int target
, int options
)
791 struct active_request_slot
*slot
;
792 struct slot_results results
;
793 struct curl_slist
*headers
= NULL
;
794 struct strbuf buf
= STRBUF_INIT
;
797 slot
= get_active_slot();
798 slot
->results
= &results
;
799 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
801 if (result
== NULL
) {
802 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 1);
804 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
805 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, result
);
807 if (target
== HTTP_REQUEST_FILE
) {
808 long posn
= ftell(result
);
809 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
812 strbuf_addf(&buf
, "Range: bytes=%ld-", posn
);
813 headers
= curl_slist_append(headers
, buf
.buf
);
817 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
821 strbuf_addstr(&buf
, "Pragma:");
822 if (options
& HTTP_NO_CACHE
)
823 strbuf_addstr(&buf
, " no-cache");
825 headers
= curl_slist_append(headers
, buf
.buf
);
827 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, url
);
828 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
830 if (start_active_slot(slot
)) {
831 run_active_slot(slot
);
832 if (results
.curl_result
== CURLE_OK
)
834 else if (missing_target(&results
))
835 ret
= HTTP_MISSING_TARGET
;
836 else if (results
.http_code
== 401) {
841 * git_getpass is needed here because its very likely stdin/stdout are
842 * pipes to our parent process. So we instead need to use /dev/tty,
843 * but that is non-portable. Using git_getpass() can at least be stubbed
844 * on other platforms with a different implementation if/when necessary.
846 user_name
= xstrdup(git_getpass("Username: "));
847 init_curl_http_auth(slot
->curl
);
853 error("Unable to start HTTP request for %s", url
);
854 ret
= HTTP_START_FAILED
;
857 curl_slist_free_all(headers
);
858 strbuf_release(&buf
);
863 int http_get_strbuf(const char *url
, struct strbuf
*result
, int options
)
865 int http_ret
= http_request(url
, result
, HTTP_REQUEST_STRBUF
, options
);
866 if (http_ret
== HTTP_REAUTH
) {
867 http_ret
= http_request(url
, result
, HTTP_REQUEST_STRBUF
, options
);
873 * Downloads an url and stores the result in the given file.
875 * If a previous interrupted download is detected (i.e. a previous temporary
876 * file is still around) the download is resumed.
878 static int http_get_file(const char *url
, const char *filename
, int options
)
881 struct strbuf tmpfile
= STRBUF_INIT
;
884 strbuf_addf(&tmpfile
, "%s.temp", filename
);
885 result
= fopen(tmpfile
.buf
, "a");
887 error("Unable to open local file %s", tmpfile
.buf
);
892 ret
= http_request(url
, result
, HTTP_REQUEST_FILE
, options
);
895 if ((ret
== HTTP_OK
) && move_temp_to_file(tmpfile
.buf
, filename
))
898 strbuf_release(&tmpfile
);
902 int http_error(const char *url
, int ret
)
904 /* http_request has already handled HTTP_START_FAILED. */
905 if (ret
!= HTTP_START_FAILED
)
906 error("%s while accessing %s\n", curl_errorstr
, url
);
911 int http_fetch_ref(const char *base
, struct ref
*ref
)
914 struct strbuf buffer
= STRBUF_INIT
;
917 url
= quote_ref_url(base
, ref
->name
);
918 if (http_get_strbuf(url
, &buffer
, HTTP_NO_CACHE
) == HTTP_OK
) {
919 strbuf_rtrim(&buffer
);
920 if (buffer
.len
== 40)
921 ret
= get_sha1_hex(buffer
.buf
, ref
->old_sha1
);
922 else if (!prefixcmp(buffer
.buf
, "ref: ")) {
923 ref
->symref
= xstrdup(buffer
.buf
+ 5);
928 strbuf_release(&buffer
);
933 /* Helpers for fetching packs */
934 static char *fetch_pack_index(unsigned char *sha1
, const char *base_url
)
937 struct strbuf buf
= STRBUF_INIT
;
940 fprintf(stderr
, "Getting index for pack %s\n", sha1_to_hex(sha1
));
942 end_url_with_slash(&buf
, base_url
);
943 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", sha1_to_hex(sha1
));
944 url
= strbuf_detach(&buf
, NULL
);
946 strbuf_addf(&buf
, "%s.temp", sha1_pack_index_name(sha1
));
947 tmp
= strbuf_detach(&buf
, NULL
);
949 if (http_get_file(url
, tmp
, 0) != HTTP_OK
) {
950 error("Unable to get pack index %s\n", url
);
959 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
960 unsigned char *sha1
, const char *base_url
)
962 struct packed_git
*new_pack
;
963 char *tmp_idx
= NULL
;
966 if (has_pack_index(sha1
)) {
967 new_pack
= parse_pack_index(sha1
, NULL
);
969 return -1; /* parse_pack_index() already issued error message */
973 tmp_idx
= fetch_pack_index(sha1
, base_url
);
977 new_pack
= parse_pack_index(sha1
, tmp_idx
);
982 return -1; /* parse_pack_index() already issued error message */
985 ret
= verify_pack_index(new_pack
);
987 close_pack_index(new_pack
);
988 ret
= move_temp_to_file(tmp_idx
, sha1_pack_index_name(sha1
));
995 new_pack
->next
= *packs_head
;
996 *packs_head
= new_pack
;
1000 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
1004 struct strbuf buf
= STRBUF_INIT
;
1005 unsigned char sha1
[20];
1007 end_url_with_slash(&buf
, base_url
);
1008 strbuf_addstr(&buf
, "objects/info/packs");
1009 url
= strbuf_detach(&buf
, NULL
);
1011 ret
= http_get_strbuf(url
, &buf
, HTTP_NO_CACHE
);
1016 while (i
< buf
.len
) {
1020 if (i
+ 52 <= buf
.len
&&
1021 !prefixcmp(data
+ i
, " pack-") &&
1022 !prefixcmp(data
+ i
+ 46, ".pack\n")) {
1023 get_sha1_hex(data
+ i
+ 6, sha1
);
1024 fetch_and_setup_pack_index(packs_head
, sha1
,
1030 while (i
< buf
.len
&& data
[i
] != '\n')
1041 void release_http_pack_request(struct http_pack_request
*preq
)
1043 if (preq
->packfile
!= NULL
) {
1044 fclose(preq
->packfile
);
1045 preq
->packfile
= NULL
;
1047 if (preq
->range_header
!= NULL
) {
1048 curl_slist_free_all(preq
->range_header
);
1049 preq
->range_header
= NULL
;
1055 int finish_http_pack_request(struct http_pack_request
*preq
)
1057 struct packed_git
**lst
;
1058 struct packed_git
*p
= preq
->target
;
1060 struct child_process ip
;
1061 const char *ip_argv
[8];
1063 close_pack_index(p
);
1065 fclose(preq
->packfile
);
1066 preq
->packfile
= NULL
;
1070 lst
= &((*lst
)->next
);
1071 *lst
= (*lst
)->next
;
1073 tmp_idx
= xstrdup(preq
->tmpfile
);
1074 strcpy(tmp_idx
+ strlen(tmp_idx
) - strlen(".pack.temp"),
1077 ip_argv
[0] = "index-pack";
1079 ip_argv
[2] = tmp_idx
;
1080 ip_argv
[3] = preq
->tmpfile
;
1083 memset(&ip
, 0, sizeof(ip
));
1089 if (run_command(&ip
)) {
1090 unlink(preq
->tmpfile
);
1096 unlink(sha1_pack_index_name(p
->sha1
));
1098 if (move_temp_to_file(preq
->tmpfile
, sha1_pack_name(p
->sha1
))
1099 || move_temp_to_file(tmp_idx
, sha1_pack_index_name(p
->sha1
))) {
1104 install_packed_git(p
);
1109 struct http_pack_request
*new_http_pack_request(
1110 struct packed_git
*target
, const char *base_url
)
1113 char range
[RANGE_HEADER_SIZE
];
1114 struct strbuf buf
= STRBUF_INIT
;
1115 struct http_pack_request
*preq
;
1117 preq
= xmalloc(sizeof(*preq
));
1118 preq
->target
= target
;
1119 preq
->range_header
= NULL
;
1121 end_url_with_slash(&buf
, base_url
);
1122 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1123 sha1_to_hex(target
->sha1
));
1124 preq
->url
= strbuf_detach(&buf
, NULL
);
1126 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp",
1127 sha1_pack_name(target
->sha1
));
1128 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1129 if (!preq
->packfile
) {
1130 error("Unable to open local file %s for pack",
1135 preq
->slot
= get_active_slot();
1136 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1137 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1138 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1139 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1143 * If there is data present from a previous transfer attempt,
1144 * resume where it left off
1146 prev_posn
= ftell(preq
->packfile
);
1148 if (http_is_verbose
)
1150 "Resuming fetch of pack %s at byte %ld\n",
1151 sha1_to_hex(target
->sha1
), prev_posn
);
1152 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1153 preq
->range_header
= curl_slist_append(NULL
, range
);
1154 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1155 preq
->range_header
);
1166 /* Helpers for fetching objects (loose) */
1167 static size_t fwrite_sha1_file(char *ptr
, size_t eltsize
, size_t nmemb
,
1170 unsigned char expn
[4096];
1171 size_t size
= eltsize
* nmemb
;
1173 struct http_object_request
*freq
=
1174 (struct http_object_request
*)data
;
1176 ssize_t retval
= xwrite(freq
->localfile
,
1177 (char *) ptr
+ posn
, size
- posn
);
1181 } while (posn
< size
);
1183 freq
->stream
.avail_in
= size
;
1184 freq
->stream
.next_in
= (void *)ptr
;
1186 freq
->stream
.next_out
= expn
;
1187 freq
->stream
.avail_out
= sizeof(expn
);
1188 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1189 git_SHA1_Update(&freq
->c
, expn
,
1190 sizeof(expn
) - freq
->stream
.avail_out
);
1191 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1195 struct http_object_request
*new_http_object_request(const char *base_url
,
1196 unsigned char *sha1
)
1198 char *hex
= sha1_to_hex(sha1
);
1200 char prevfile
[PATH_MAX
];
1202 char prev_buf
[PREV_BUF_SIZE
];
1203 ssize_t prev_read
= 0;
1205 char range
[RANGE_HEADER_SIZE
];
1206 struct curl_slist
*range_header
= NULL
;
1207 struct http_object_request
*freq
;
1209 freq
= xmalloc(sizeof(*freq
));
1210 hashcpy(freq
->sha1
, sha1
);
1211 freq
->localfile
= -1;
1213 filename
= sha1_file_name(sha1
);
1214 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1215 "%s.temp", filename
);
1217 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1218 unlink_or_warn(prevfile
);
1219 rename(freq
->tmpfile
, prevfile
);
1220 unlink_or_warn(freq
->tmpfile
);
1222 if (freq
->localfile
!= -1)
1223 error("fd leakage in start: %d", freq
->localfile
);
1224 freq
->localfile
= open(freq
->tmpfile
,
1225 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1227 * This could have failed due to the "lazy directory creation";
1228 * try to mkdir the last path component.
1230 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1231 char *dir
= strrchr(freq
->tmpfile
, '/');
1234 mkdir(freq
->tmpfile
, 0777);
1237 freq
->localfile
= open(freq
->tmpfile
,
1238 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1241 if (freq
->localfile
< 0) {
1242 error("Couldn't create temporary file %s: %s",
1243 freq
->tmpfile
, strerror(errno
));
1247 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1249 git_inflate_init(&freq
->stream
);
1251 git_SHA1_Init(&freq
->c
);
1253 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1256 * If a previous temp file is present, process what was already
1259 prevlocal
= open(prevfile
, O_RDONLY
);
1260 if (prevlocal
!= -1) {
1262 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1264 if (fwrite_sha1_file(prev_buf
,
1267 freq
) == prev_read
) {
1268 prev_posn
+= prev_read
;
1273 } while (prev_read
> 0);
1276 unlink_or_warn(prevfile
);
1279 * Reset inflate/SHA1 if there was an error reading the previous temp
1280 * file; also rewind to the beginning of the local file.
1282 if (prev_read
== -1) {
1283 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1284 git_inflate_init(&freq
->stream
);
1285 git_SHA1_Init(&freq
->c
);
1288 lseek(freq
->localfile
, 0, SEEK_SET
);
1289 if (ftruncate(freq
->localfile
, 0) < 0) {
1290 error("Couldn't truncate temporary file %s: %s",
1291 freq
->tmpfile
, strerror(errno
));
1297 freq
->slot
= get_active_slot();
1299 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1300 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1301 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1302 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1303 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1306 * If we have successfully processed data from a previous fetch
1307 * attempt, only fetch the data we don't already have.
1310 if (http_is_verbose
)
1312 "Resuming fetch of object %s at byte %ld\n",
1314 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1315 range_header
= curl_slist_append(range_header
, range
);
1316 curl_easy_setopt(freq
->slot
->curl
,
1317 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
);