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 cre_url
= CREDENTIAL_INIT
;
46 static struct credential http_auth
= CREDENTIAL_INIT
;
47 static struct credential proxy_auth
= CREDENTIAL_INIT
;
48 static int http_proactive_auth
;
49 static const char *user_agent
;
51 #if LIBCURL_VERSION_NUM >= 0x071700
52 /* Use CURLOPT_KEYPASSWD as is */
53 #elif LIBCURL_VERSION_NUM >= 0x070903
54 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
56 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
59 static struct credential cert_auth
= CREDENTIAL_INIT
;
60 static int ssl_cert_password_required
;
62 static struct curl_slist
*pragma_header
;
63 static struct curl_slist
*no_pragma_header
;
65 static struct active_request_slot
*active_queue_head
;
67 size_t fread_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
69 size_t size
= eltsize
* nmemb
;
70 struct buffer
*buffer
= buffer_
;
72 if (size
> buffer
->buf
.len
- buffer
->posn
)
73 size
= buffer
->buf
.len
- buffer
->posn
;
74 memcpy(ptr
, buffer
->buf
.buf
+ buffer
->posn
, size
);
81 curlioerr
ioctl_buffer(CURL
*handle
, int cmd
, void *clientp
)
83 struct buffer
*buffer
= clientp
;
89 case CURLIOCMD_RESTARTREAD
:
94 return CURLIOE_UNKNOWNCMD
;
99 size_t fwrite_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
101 size_t size
= eltsize
* nmemb
;
102 struct strbuf
*buffer
= buffer_
;
104 strbuf_add(buffer
, ptr
, size
);
108 size_t fwrite_null(char *ptr
, size_t eltsize
, size_t nmemb
, void *strbuf
)
110 return eltsize
* nmemb
;
113 #ifdef USE_CURL_MULTI
114 static void process_curl_messages(void)
117 struct active_request_slot
*slot
;
118 CURLMsg
*curl_message
= curl_multi_info_read(curlm
, &num_messages
);
120 while (curl_message
!= NULL
) {
121 if (curl_message
->msg
== CURLMSG_DONE
) {
122 int curl_result
= curl_message
->data
.result
;
123 slot
= active_queue_head
;
124 while (slot
!= NULL
&&
125 slot
->curl
!= curl_message
->easy_handle
)
128 curl_multi_remove_handle(curlm
, slot
->curl
);
129 slot
->curl_result
= curl_result
;
130 finish_active_slot(slot
);
132 fprintf(stderr
, "Received DONE message for unknown request!\n");
135 fprintf(stderr
, "Unknown CURL message received: %d\n",
136 (int)curl_message
->msg
);
138 curl_message
= curl_multi_info_read(curlm
, &num_messages
);
143 static int http_options(const char *var
, const char *value
, void *cb
)
145 if (!strcmp("http.sslverify", var
)) {
146 curl_ssl_verify
= git_config_bool(var
, value
);
149 if (!strcmp("http.sslcert", var
))
150 return git_config_string(&ssl_cert
, var
, value
);
151 #if LIBCURL_VERSION_NUM >= 0x070903
152 if (!strcmp("http.sslkey", var
))
153 return git_config_string(&ssl_key
, var
, value
);
155 #if LIBCURL_VERSION_NUM >= 0x070908
156 if (!strcmp("http.sslcapath", var
))
157 return git_config_string(&ssl_capath
, var
, value
);
159 if (!strcmp("http.sslcainfo", var
))
160 return git_config_string(&ssl_cainfo
, var
, value
);
161 if (!strcmp("http.sslcertpasswordprotected", var
)) {
162 if (git_config_bool(var
, value
))
163 ssl_cert_password_required
= 1;
166 if (!strcmp("http.minsessions", var
)) {
167 min_curl_sessions
= git_config_int(var
, value
);
168 #ifndef USE_CURL_MULTI
169 if (min_curl_sessions
> 1)
170 min_curl_sessions
= 1;
174 #ifdef USE_CURL_MULTI
175 if (!strcmp("http.maxrequests", var
)) {
176 max_requests
= git_config_int(var
, value
);
180 if (!strcmp("http.lowspeedlimit", var
)) {
181 curl_low_speed_limit
= (long)git_config_int(var
, value
);
184 if (!strcmp("http.lowspeedtime", var
)) {
185 curl_low_speed_time
= (long)git_config_int(var
, value
);
189 if (!strcmp("http.noepsv", var
)) {
190 curl_ftp_no_epsv
= git_config_bool(var
, value
);
193 if (!strcmp("http.proxy", var
))
194 return git_config_string(&curl_http_proxy
, var
, value
);
196 if (!strcmp("http.cookiefile", var
))
197 return git_config_string(&curl_cookie_file
, var
, value
);
199 if (!strcmp("http.postbuffer", var
)) {
200 http_post_buffer
= git_config_int(var
, value
);
201 if (http_post_buffer
< LARGE_PACKET_MAX
)
202 http_post_buffer
= LARGE_PACKET_MAX
;
206 if (!strcmp("http.useragent", var
))
207 return git_config_string(&user_agent
, var
, value
);
209 /* Fall back on the default ones */
210 return git_default_config(var
, value
, cb
);
213 static void init_curl_http_auth(CURL
*result
)
215 if (http_auth
.username
) {
216 struct strbuf up
= STRBUF_INIT
;
217 credential_fill(&http_auth
);
218 strbuf_addf(&up
, "%s:%s",
219 http_auth
.username
, http_auth
.password
);
220 curl_easy_setopt(result
, CURLOPT_USERPWD
,
221 strbuf_detach(&up
, NULL
));
225 static int has_cert_password(void)
227 if (ssl_cert
== NULL
|| ssl_cert_password_required
!= 1)
229 if (!cert_auth
.password
) {
230 cert_auth
.protocol
= xstrdup("cert");
231 cert_auth
.path
= xstrdup(ssl_cert
);
232 credential_fill(&cert_auth
);
237 static void set_proxy_auth(CURL
*result
)
239 if (proxy_auth
.username
&& proxy_auth
.password
) {
240 #if LIBCURL_VERSION_NUM >= 0x071901
241 curl_easy_setopt(result
, CURLOPT_PROXYUSERNAME
, proxy_auth
.username
);
242 curl_easy_setopt(result
, CURLOPT_PROXYPASSWORD
, proxy_auth
.password
);
244 struct strbuf userpwd
= STRBUF_INIT
;
245 strbuf_addf(&userpwd
, "%s:%s", proxy_auth
.username
, proxy_auth
.password
);
246 curl_easy_setopt(result
, CURLOPT_PROXYUSERPWD
, strbuf_detach(&userpwd
, NULL
));
251 static CURL
*get_curl_handle(const char *url
)
253 CURL
*result
= curl_easy_init();
255 if (!curl_ssl_verify
) {
256 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 0);
257 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 0);
259 /* Verify authenticity of the peer's certificate */
260 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 1);
261 /* The name in the cert must match whom we tried to connect */
262 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 2);
265 #if LIBCURL_VERSION_NUM >= 0x070907
266 curl_easy_setopt(result
, CURLOPT_NETRC
, CURL_NETRC_OPTIONAL
);
268 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
269 curl_easy_setopt(result
, CURLOPT_HTTPAUTH
, CURLAUTH_ANY
);
272 if (http_proactive_auth
)
273 init_curl_http_auth(result
);
275 if (ssl_cert
!= NULL
)
276 curl_easy_setopt(result
, CURLOPT_SSLCERT
, ssl_cert
);
277 if (has_cert_password())
278 curl_easy_setopt(result
, CURLOPT_KEYPASSWD
, cert_auth
.password
);
279 #if LIBCURL_VERSION_NUM >= 0x070903
281 curl_easy_setopt(result
, CURLOPT_SSLKEY
, ssl_key
);
283 #if LIBCURL_VERSION_NUM >= 0x070908
284 if (ssl_capath
!= NULL
)
285 curl_easy_setopt(result
, CURLOPT_CAPATH
, ssl_capath
);
287 if (ssl_cainfo
!= NULL
)
288 curl_easy_setopt(result
, CURLOPT_CAINFO
, ssl_cainfo
);
289 curl_easy_setopt(result
, CURLOPT_FAILONERROR
, 1);
291 if (curl_low_speed_limit
> 0 && curl_low_speed_time
> 0) {
292 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_LIMIT
,
293 curl_low_speed_limit
);
294 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_TIME
,
295 curl_low_speed_time
);
298 curl_easy_setopt(result
, CURLOPT_FOLLOWLOCATION
, 1);
299 #if LIBCURL_VERSION_NUM >= 0x071301
300 curl_easy_setopt(result
, CURLOPT_POSTREDIR
, CURL_REDIR_POST_ALL
);
301 #elif LIBCURL_VERSION_NUM >= 0x071101
302 curl_easy_setopt(result
, CURLOPT_POST301
, 1);
305 if (getenv("GIT_CURL_VERBOSE"))
306 curl_easy_setopt(result
, CURLOPT_VERBOSE
, 1);
308 curl_easy_setopt(result
, CURLOPT_USERAGENT
,
309 user_agent
? user_agent
: GIT_HTTP_USER_AGENT
);
311 if (curl_ftp_no_epsv
)
312 curl_easy_setopt(result
, CURLOPT_FTP_USE_EPSV
, 0);
314 if (!curl_http_proxy
) {
315 const char *env_proxy
, *no_proxy
;
318 struct strbuf buf
= STRBUF_INIT
;
319 credential_from_url(&cre_url
, url
);
320 strbuf_addf(&buf
, "%s_proxy", cre_url
.protocol
);
321 env_proxy_var
= strbuf_detach(&buf
, NULL
);
322 env_proxy
= getenv(env_proxy_var
);
325 no_proxy
= getenv("no_proxy");
327 no_proxy
= getenv("NO_PROXY");
328 if (no_proxy
&& (!strcmp("*", no_proxy
) || strstr(no_proxy
, cre_url
.host
)))
332 curl_http_proxy
= xstrdup(env_proxy
);
336 if (curl_http_proxy
) {
337 struct strbuf proxyhost
= STRBUF_INIT
;
339 if (!proxy_auth
.host
) /* check to parse only once */
340 credential_from_url(&proxy_auth
, curl_http_proxy
);
342 if (http_proactive_auth
&& proxy_auth
.username
&& !proxy_auth
.password
)
343 /* proxy string has username but no password, ask for password */
344 credential_fill(&proxy_auth
);
346 strbuf_addf(&proxyhost
, "%s://%s", proxy_auth
.protocol
, proxy_auth
.host
);
347 curl_easy_setopt(result
, CURLOPT_PROXY
, strbuf_detach(&proxyhost
, NULL
));
348 curl_easy_setopt(result
, CURLOPT_PROXYAUTH
, CURLAUTH_ANY
);
349 set_proxy_auth(result
);
355 static void set_from_env(const char **var
, const char *envname
)
357 const char *val
= getenv(envname
);
362 void http_init(struct remote
*remote
, const char *url
, int proactive_auth
)
364 char *low_speed_limit
;
365 char *low_speed_time
;
369 git_config(http_options
, NULL
);
371 curl_global_init(CURL_GLOBAL_ALL
);
373 http_proactive_auth
= proactive_auth
;
375 if (remote
&& remote
->http_proxy
)
376 curl_http_proxy
= xstrdup(remote
->http_proxy
);
378 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
379 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
381 #ifdef USE_CURL_MULTI
383 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
384 if (http_max_requests
!= NULL
)
385 max_requests
= atoi(http_max_requests
);
388 curlm
= curl_multi_init();
390 fprintf(stderr
, "Error creating curl multi handle.\n");
395 if (getenv("GIT_SSL_NO_VERIFY"))
398 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
399 #if LIBCURL_VERSION_NUM >= 0x070903
400 set_from_env(&ssl_key
, "GIT_SSL_KEY");
402 #if LIBCURL_VERSION_NUM >= 0x070908
403 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
405 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
407 set_from_env(&user_agent
, "GIT_HTTP_USER_AGENT");
409 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
410 if (low_speed_limit
!= NULL
)
411 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
412 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
413 if (low_speed_time
!= NULL
)
414 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
416 if (curl_ssl_verify
== -1)
419 curl_session_count
= 0;
420 #ifdef USE_CURL_MULTI
421 if (max_requests
< 1)
422 max_requests
= DEFAULT_MAX_REQUESTS
;
425 if (getenv("GIT_CURL_FTP_NO_EPSV"))
426 curl_ftp_no_epsv
= 1;
429 credential_from_url(&http_auth
, url
);
430 if (!ssl_cert_password_required
&&
431 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
432 !prefixcmp(url
, "https://"))
433 ssl_cert_password_required
= 1;
436 #ifndef NO_CURL_EASY_DUPHANDLE
437 curl_default
= get_curl_handle(url
);
441 void http_cleanup(void)
443 struct active_request_slot
*slot
= active_queue_head
;
445 while (slot
!= NULL
) {
446 struct active_request_slot
*next
= slot
->next
;
447 if (slot
->curl
!= NULL
) {
448 #ifdef USE_CURL_MULTI
449 curl_multi_remove_handle(curlm
, slot
->curl
);
451 curl_easy_cleanup(slot
->curl
);
456 active_queue_head
= NULL
;
458 #ifndef NO_CURL_EASY_DUPHANDLE
459 curl_easy_cleanup(curl_default
);
462 #ifdef USE_CURL_MULTI
463 curl_multi_cleanup(curlm
);
465 curl_global_cleanup();
467 curl_slist_free_all(pragma_header
);
468 pragma_header
= NULL
;
470 curl_slist_free_all(no_pragma_header
);
471 no_pragma_header
= NULL
;
473 if (curl_http_proxy
) {
474 free((void *)curl_http_proxy
);
475 curl_http_proxy
= NULL
;
478 if (cert_auth
.password
!= NULL
) {
479 memset(cert_auth
.password
, 0, strlen(cert_auth
.password
));
480 free(cert_auth
.password
);
481 cert_auth
.password
= NULL
;
483 ssl_cert_password_required
= 0;
486 struct active_request_slot
*get_active_slot(const char *url
)
488 struct active_request_slot
*slot
= active_queue_head
;
489 struct active_request_slot
*newslot
;
491 #ifdef USE_CURL_MULTI
494 /* Wait for a slot to open up if the queue is full */
495 while (active_requests
>= max_requests
) {
496 curl_multi_perform(curlm
, &num_transfers
);
497 if (num_transfers
< active_requests
)
498 process_curl_messages();
502 while (slot
!= NULL
&& slot
->in_use
)
506 newslot
= xmalloc(sizeof(*newslot
));
507 newslot
->curl
= NULL
;
509 newslot
->next
= NULL
;
511 slot
= active_queue_head
;
513 active_queue_head
= newslot
;
515 while (slot
->next
!= NULL
)
517 slot
->next
= newslot
;
522 if (slot
->curl
== NULL
) {
523 #ifdef NO_CURL_EASY_DUPHANDLE
524 slot
->curl
= get_curl_handle(url
);
526 slot
->curl
= curl_easy_duphandle(curl_default
);
528 curl_session_count
++;
533 slot
->results
= NULL
;
534 slot
->finished
= NULL
;
535 slot
->callback_data
= NULL
;
536 slot
->callback_func
= NULL
;
537 curl_easy_setopt(slot
->curl
, CURLOPT_COOKIEFILE
, curl_cookie_file
);
538 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
539 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
540 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
541 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
542 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
543 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, NULL
);
544 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
545 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
550 int start_active_slot(struct active_request_slot
*slot
)
552 #ifdef USE_CURL_MULTI
553 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
556 if (curlm_result
!= CURLM_OK
&&
557 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
564 * We know there must be something to do, since we just added
567 curl_multi_perform(curlm
, &num_transfers
);
572 #ifdef USE_CURL_MULTI
576 struct fill_chain
*next
;
579 static struct fill_chain
*fill_cfg
;
581 void add_fill_function(void *data
, int (*fill
)(void *))
583 struct fill_chain
*new = xmalloc(sizeof(*new));
584 struct fill_chain
**linkp
= &fill_cfg
;
589 linkp
= &(*linkp
)->next
;
593 void fill_active_slots(void)
595 struct active_request_slot
*slot
= active_queue_head
;
597 while (active_requests
< max_requests
) {
598 struct fill_chain
*fill
;
599 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
600 if (fill
->fill(fill
->data
))
607 while (slot
!= NULL
) {
608 if (!slot
->in_use
&& slot
->curl
!= NULL
609 && curl_session_count
> min_curl_sessions
) {
610 curl_easy_cleanup(slot
->curl
);
612 curl_session_count
--;
618 void step_active_slots(void)
621 CURLMcode curlm_result
;
624 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
625 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
626 if (num_transfers
< active_requests
) {
627 process_curl_messages();
633 void run_active_slot(struct active_request_slot
*slot
)
635 #ifdef USE_CURL_MULTI
640 struct timeval select_timeout
;
643 slot
->finished
= &finished
;
648 #if LIBCURL_VERSION_NUM >= 0x070f04
650 curl_multi_timeout(curlm
, &curl_timeout
);
651 if (curl_timeout
== 0) {
653 } else if (curl_timeout
== -1) {
654 select_timeout
.tv_sec
= 0;
655 select_timeout
.tv_usec
= 50000;
657 select_timeout
.tv_sec
= curl_timeout
/ 1000;
658 select_timeout
.tv_usec
= (curl_timeout
% 1000) * 1000;
661 select_timeout
.tv_sec
= 0;
662 select_timeout
.tv_usec
= 50000;
669 curl_multi_fdset(curlm
, &readfds
, &writefds
, &excfds
, &max_fd
);
671 select(max_fd
+1, &readfds
, &writefds
, &excfds
, &select_timeout
);
675 while (slot
->in_use
) {
676 slot
->curl_result
= curl_easy_perform(slot
->curl
);
677 finish_active_slot(slot
);
682 static void closedown_active_slot(struct active_request_slot
*slot
)
688 static void release_active_slot(struct active_request_slot
*slot
)
690 closedown_active_slot(slot
);
691 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
692 #ifdef USE_CURL_MULTI
693 curl_multi_remove_handle(curlm
, slot
->curl
);
695 curl_easy_cleanup(slot
->curl
);
697 curl_session_count
--;
699 #ifdef USE_CURL_MULTI
704 void finish_active_slot(struct active_request_slot
*slot
)
706 closedown_active_slot(slot
);
707 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CODE
, &slot
->http_code
);
709 if (slot
->finished
!= NULL
)
710 (*slot
->finished
) = 1;
712 /* Store slot results so they can be read after the slot is reused */
713 if (slot
->results
!= NULL
) {
714 slot
->results
->curl_result
= slot
->curl_result
;
715 slot
->results
->http_code
= slot
->http_code
;
718 /* Run callback if appropriate */
719 if (slot
->callback_func
!= NULL
)
720 slot
->callback_func(slot
->callback_data
);
723 void finish_all_active_slots(void)
725 struct active_request_slot
*slot
= active_queue_head
;
729 run_active_slot(slot
);
730 slot
= active_queue_head
;
736 /* Helpers for modifying and creating URLs */
737 static inline int needs_quote(int ch
)
739 if (((ch
>= 'A') && (ch
<= 'Z'))
740 || ((ch
>= 'a') && (ch
<= 'z'))
741 || ((ch
>= '0') && (ch
<= '9'))
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(url
);
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) {
837 if (http_auth
.username
&& http_auth
.password
) {
838 credential_reject(&http_auth
);
841 credential_fill(&http_auth
);
842 init_curl_http_auth(slot
->curl
);
843 ret
= HTTP_AUTH_RETRY
;
845 } else if (results
.http_code
== 407) { /* Proxy authentication failure */
846 if (proxy_auth
.username
&& proxy_auth
.password
) {
847 credential_reject(&proxy_auth
);
850 credential_fill(&proxy_auth
);
851 set_proxy_auth(slot
->curl
);
852 ret
= HTTP_AUTH_RETRY
;
855 if (!curl_errorstr
[0])
856 strlcpy(curl_errorstr
,
857 curl_easy_strerror(results
.curl_result
),
858 sizeof(curl_errorstr
));
862 error("Unable to start HTTP request for %s", url
);
863 ret
= HTTP_START_FAILED
;
866 curl_slist_free_all(headers
);
867 strbuf_release(&buf
);
870 credential_approve(&http_auth
);
875 static int http_request_reauth(const char *url
, void *result
, int target
,
881 ret
= http_request(url
, result
, target
, options
);
882 } while (ret
== HTTP_AUTH_RETRY
);
887 int http_get_strbuf(const char *url
, struct strbuf
*result
, int options
)
889 return http_request_reauth(url
, result
, HTTP_REQUEST_STRBUF
, options
);
893 * Downloads a URL and stores the result in the given file.
895 * If a previous interrupted download is detected (i.e. a previous temporary
896 * file is still around) the download is resumed.
898 static int http_get_file(const char *url
, const char *filename
, int options
)
901 struct strbuf tmpfile
= STRBUF_INIT
;
904 strbuf_addf(&tmpfile
, "%s.temp", filename
);
905 result
= fopen(tmpfile
.buf
, "a");
907 error("Unable to open local file %s", tmpfile
.buf
);
912 ret
= http_request_reauth(url
, result
, HTTP_REQUEST_FILE
, options
);
915 if ((ret
== HTTP_OK
) && move_temp_to_file(tmpfile
.buf
, filename
))
918 strbuf_release(&tmpfile
);
922 int http_error(const char *url
, int ret
)
924 /* http_request has already handled HTTP_START_FAILED. */
925 if (ret
!= HTTP_START_FAILED
)
926 error("%s while accessing %s", curl_errorstr
, url
);
931 int http_fetch_ref(const char *base
, struct ref
*ref
)
934 struct strbuf buffer
= STRBUF_INIT
;
937 url
= quote_ref_url(base
, ref
->name
);
938 if (http_get_strbuf(url
, &buffer
, HTTP_NO_CACHE
) == HTTP_OK
) {
939 strbuf_rtrim(&buffer
);
940 if (buffer
.len
== 40)
941 ret
= get_sha1_hex(buffer
.buf
, ref
->old_sha1
);
942 else if (!prefixcmp(buffer
.buf
, "ref: ")) {
943 ref
->symref
= xstrdup(buffer
.buf
+ 5);
948 strbuf_release(&buffer
);
953 /* Helpers for fetching packs */
954 static char *fetch_pack_index(unsigned char *sha1
, const char *base_url
)
957 struct strbuf buf
= STRBUF_INIT
;
960 fprintf(stderr
, "Getting index for pack %s\n", sha1_to_hex(sha1
));
962 end_url_with_slash(&buf
, base_url
);
963 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", sha1_to_hex(sha1
));
964 url
= strbuf_detach(&buf
, NULL
);
966 strbuf_addf(&buf
, "%s.temp", sha1_pack_index_name(sha1
));
967 tmp
= strbuf_detach(&buf
, NULL
);
969 if (http_get_file(url
, tmp
, 0) != HTTP_OK
) {
970 error("Unable to get pack index %s\n", url
);
979 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
980 unsigned char *sha1
, const char *base_url
)
982 struct packed_git
*new_pack
;
983 char *tmp_idx
= NULL
;
986 if (has_pack_index(sha1
)) {
987 new_pack
= parse_pack_index(sha1
, NULL
);
989 return -1; /* parse_pack_index() already issued error message */
993 tmp_idx
= fetch_pack_index(sha1
, base_url
);
997 new_pack
= parse_pack_index(sha1
, tmp_idx
);
1002 return -1; /* parse_pack_index() already issued error message */
1005 ret
= verify_pack_index(new_pack
);
1007 close_pack_index(new_pack
);
1008 ret
= move_temp_to_file(tmp_idx
, sha1_pack_index_name(sha1
));
1015 new_pack
->next
= *packs_head
;
1016 *packs_head
= new_pack
;
1020 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
1024 struct strbuf buf
= STRBUF_INIT
;
1025 unsigned char sha1
[20];
1027 end_url_with_slash(&buf
, base_url
);
1028 strbuf_addstr(&buf
, "objects/info/packs");
1029 url
= strbuf_detach(&buf
, NULL
);
1031 ret
= http_get_strbuf(url
, &buf
, HTTP_NO_CACHE
);
1036 while (i
< buf
.len
) {
1040 if (i
+ 52 <= buf
.len
&&
1041 !prefixcmp(data
+ i
, " pack-") &&
1042 !prefixcmp(data
+ i
+ 46, ".pack\n")) {
1043 get_sha1_hex(data
+ i
+ 6, sha1
);
1044 fetch_and_setup_pack_index(packs_head
, sha1
,
1050 while (i
< buf
.len
&& data
[i
] != '\n')
1061 void release_http_pack_request(struct http_pack_request
*preq
)
1063 if (preq
->packfile
!= NULL
) {
1064 fclose(preq
->packfile
);
1065 preq
->packfile
= NULL
;
1067 if (preq
->range_header
!= NULL
) {
1068 curl_slist_free_all(preq
->range_header
);
1069 preq
->range_header
= NULL
;
1075 int finish_http_pack_request(struct http_pack_request
*preq
)
1077 struct packed_git
**lst
;
1078 struct packed_git
*p
= preq
->target
;
1080 struct child_process ip
;
1081 const char *ip_argv
[8];
1083 close_pack_index(p
);
1085 fclose(preq
->packfile
);
1086 preq
->packfile
= NULL
;
1090 lst
= &((*lst
)->next
);
1091 *lst
= (*lst
)->next
;
1093 tmp_idx
= xstrdup(preq
->tmpfile
);
1094 strcpy(tmp_idx
+ strlen(tmp_idx
) - strlen(".pack.temp"),
1097 ip_argv
[0] = "index-pack";
1099 ip_argv
[2] = tmp_idx
;
1100 ip_argv
[3] = preq
->tmpfile
;
1103 memset(&ip
, 0, sizeof(ip
));
1109 if (run_command(&ip
)) {
1110 unlink(preq
->tmpfile
);
1116 unlink(sha1_pack_index_name(p
->sha1
));
1118 if (move_temp_to_file(preq
->tmpfile
, sha1_pack_name(p
->sha1
))
1119 || move_temp_to_file(tmp_idx
, sha1_pack_index_name(p
->sha1
))) {
1124 install_packed_git(p
);
1129 struct http_pack_request
*new_http_pack_request(
1130 struct packed_git
*target
, const char *base_url
)
1133 char range
[RANGE_HEADER_SIZE
];
1134 struct strbuf buf
= STRBUF_INIT
;
1135 struct http_pack_request
*preq
;
1137 preq
= xcalloc(1, sizeof(*preq
));
1138 preq
->target
= target
;
1140 end_url_with_slash(&buf
, base_url
);
1141 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1142 sha1_to_hex(target
->sha1
));
1143 preq
->url
= strbuf_detach(&buf
, NULL
);
1145 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp",
1146 sha1_pack_name(target
->sha1
));
1147 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1148 if (!preq
->packfile
) {
1149 error("Unable to open local file %s for pack",
1154 preq
->slot
= get_active_slot(preq
->url
);
1155 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1156 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1157 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1158 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1162 * If there is data present from a previous transfer attempt,
1163 * resume where it left off
1165 prev_posn
= ftell(preq
->packfile
);
1167 if (http_is_verbose
)
1169 "Resuming fetch of pack %s at byte %ld\n",
1170 sha1_to_hex(target
->sha1
), prev_posn
);
1171 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1172 preq
->range_header
= curl_slist_append(NULL
, range
);
1173 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1174 preq
->range_header
);
1185 /* Helpers for fetching objects (loose) */
1186 static size_t fwrite_sha1_file(char *ptr
, size_t eltsize
, size_t nmemb
,
1189 unsigned char expn
[4096];
1190 size_t size
= eltsize
* nmemb
;
1192 struct http_object_request
*freq
=
1193 (struct http_object_request
*)data
;
1195 ssize_t retval
= xwrite(freq
->localfile
,
1196 (char *) ptr
+ posn
, size
- posn
);
1200 } while (posn
< size
);
1202 freq
->stream
.avail_in
= size
;
1203 freq
->stream
.next_in
= (void *)ptr
;
1205 freq
->stream
.next_out
= expn
;
1206 freq
->stream
.avail_out
= sizeof(expn
);
1207 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1208 git_SHA1_Update(&freq
->c
, expn
,
1209 sizeof(expn
) - freq
->stream
.avail_out
);
1210 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1214 struct http_object_request
*new_http_object_request(const char *base_url
,
1215 unsigned char *sha1
)
1217 char *hex
= sha1_to_hex(sha1
);
1219 char prevfile
[PATH_MAX
];
1221 char prev_buf
[PREV_BUF_SIZE
];
1222 ssize_t prev_read
= 0;
1224 char range
[RANGE_HEADER_SIZE
];
1225 struct curl_slist
*range_header
= NULL
;
1226 struct http_object_request
*freq
;
1228 freq
= xcalloc(1, sizeof(*freq
));
1229 hashcpy(freq
->sha1
, sha1
);
1230 freq
->localfile
= -1;
1232 filename
= sha1_file_name(sha1
);
1233 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1234 "%s.temp", filename
);
1236 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1237 unlink_or_warn(prevfile
);
1238 rename(freq
->tmpfile
, prevfile
);
1239 unlink_or_warn(freq
->tmpfile
);
1241 if (freq
->localfile
!= -1)
1242 error("fd leakage in start: %d", freq
->localfile
);
1243 freq
->localfile
= open(freq
->tmpfile
,
1244 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1246 * This could have failed due to the "lazy directory creation";
1247 * try to mkdir the last path component.
1249 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1250 char *dir
= strrchr(freq
->tmpfile
, '/');
1253 mkdir(freq
->tmpfile
, 0777);
1256 freq
->localfile
= open(freq
->tmpfile
,
1257 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1260 if (freq
->localfile
< 0) {
1261 error("Couldn't create temporary file %s: %s",
1262 freq
->tmpfile
, strerror(errno
));
1266 git_inflate_init(&freq
->stream
);
1268 git_SHA1_Init(&freq
->c
);
1270 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1273 * If a previous temp file is present, process what was already
1276 prevlocal
= open(prevfile
, O_RDONLY
);
1277 if (prevlocal
!= -1) {
1279 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1281 if (fwrite_sha1_file(prev_buf
,
1284 freq
) == prev_read
) {
1285 prev_posn
+= prev_read
;
1290 } while (prev_read
> 0);
1293 unlink_or_warn(prevfile
);
1296 * Reset inflate/SHA1 if there was an error reading the previous temp
1297 * file; also rewind to the beginning of the local file.
1299 if (prev_read
== -1) {
1300 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1301 git_inflate_init(&freq
->stream
);
1302 git_SHA1_Init(&freq
->c
);
1305 lseek(freq
->localfile
, 0, SEEK_SET
);
1306 if (ftruncate(freq
->localfile
, 0) < 0) {
1307 error("Couldn't truncate temporary file %s: %s",
1308 freq
->tmpfile
, strerror(errno
));
1314 freq
->slot
= get_active_slot(freq
->url
);
1316 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1317 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1318 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1319 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1320 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1323 * If we have successfully processed data from a previous fetch
1324 * attempt, only fetch the data we don't already have.
1327 if (http_is_verbose
)
1329 "Resuming fetch of object %s at byte %ld\n",
1331 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1332 range_header
= curl_slist_append(range_header
, range
);
1333 curl_easy_setopt(freq
->slot
->curl
,
1334 CURLOPT_HTTPHEADER
, range_header
);
1345 void process_http_object_request(struct http_object_request
*freq
)
1347 if (freq
->slot
== NULL
)
1349 freq
->curl_result
= freq
->slot
->curl_result
;
1350 freq
->http_code
= freq
->slot
->http_code
;
1354 int finish_http_object_request(struct http_object_request
*freq
)
1358 close(freq
->localfile
);
1359 freq
->localfile
= -1;
1361 process_http_object_request(freq
);
1363 if (freq
->http_code
== 416) {
1364 warning("requested range invalid; we may already have all the data.");
1365 } else if (freq
->curl_result
!= CURLE_OK
) {
1366 if (stat(freq
->tmpfile
, &st
) == 0)
1367 if (st
.st_size
== 0)
1368 unlink_or_warn(freq
->tmpfile
);
1372 git_inflate_end(&freq
->stream
);
1373 git_SHA1_Final(freq
->real_sha1
, &freq
->c
);
1374 if (freq
->zret
!= Z_STREAM_END
) {
1375 unlink_or_warn(freq
->tmpfile
);
1378 if (hashcmp(freq
->sha1
, freq
->real_sha1
)) {
1379 unlink_or_warn(freq
->tmpfile
);
1383 move_temp_to_file(freq
->tmpfile
, sha1_file_name(freq
->sha1
));
1385 return freq
->rename
;
1388 void abort_http_object_request(struct http_object_request
*freq
)
1390 unlink_or_warn(freq
->tmpfile
);
1392 release_http_object_request(freq
);
1395 void release_http_object_request(struct http_object_request
*freq
)
1397 if (freq
->localfile
!= -1) {
1398 close(freq
->localfile
);
1399 freq
->localfile
= -1;
1401 if (freq
->url
!= NULL
) {
1405 if (freq
->slot
!= NULL
) {
1406 freq
->slot
->callback_func
= NULL
;
1407 freq
->slot
->callback_data
= NULL
;
1408 release_active_slot(freq
->slot
);