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(void *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(const void *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
);
104 size_t fwrite_null(const void *ptr
, size_t eltsize
, size_t nmemb
, void *strbuf
)
107 return eltsize
* nmemb
;
110 #ifdef USE_CURL_MULTI
111 static void process_curl_messages(void)
114 struct active_request_slot
*slot
;
115 CURLMsg
*curl_message
= curl_multi_info_read(curlm
, &num_messages
);
117 while (curl_message
!= NULL
) {
118 if (curl_message
->msg
== CURLMSG_DONE
) {
119 int curl_result
= curl_message
->data
.result
;
120 slot
= active_queue_head
;
121 while (slot
!= NULL
&&
122 slot
->curl
!= curl_message
->easy_handle
)
125 curl_multi_remove_handle(curlm
, slot
->curl
);
126 slot
->curl_result
= curl_result
;
127 finish_active_slot(slot
);
129 fprintf(stderr
, "Received DONE message for unknown request!\n");
132 fprintf(stderr
, "Unknown CURL message received: %d\n",
133 (int)curl_message
->msg
);
135 curl_message
= curl_multi_info_read(curlm
, &num_messages
);
140 static int http_options(const char *var
, const char *value
, void *cb
)
142 if (!strcmp("http.sslverify", var
)) {
143 curl_ssl_verify
= git_config_bool(var
, value
);
146 if (!strcmp("http.sslcert", var
))
147 return git_config_string(&ssl_cert
, var
, value
);
148 #if LIBCURL_VERSION_NUM >= 0x070903
149 if (!strcmp("http.sslkey", var
))
150 return git_config_string(&ssl_key
, var
, value
);
152 #if LIBCURL_VERSION_NUM >= 0x070908
153 if (!strcmp("http.sslcapath", var
))
154 return git_config_string(&ssl_capath
, var
, value
);
156 if (!strcmp("http.sslcainfo", var
))
157 return git_config_string(&ssl_cainfo
, var
, value
);
158 if (!strcmp("http.sslcertpasswordprotected", var
)) {
159 if (git_config_bool(var
, value
))
160 ssl_cert_password_required
= 1;
163 if (!strcmp("http.minsessions", var
)) {
164 min_curl_sessions
= git_config_int(var
, value
);
165 #ifndef USE_CURL_MULTI
166 if (min_curl_sessions
> 1)
167 min_curl_sessions
= 1;
171 #ifdef USE_CURL_MULTI
172 if (!strcmp("http.maxrequests", var
)) {
173 max_requests
= git_config_int(var
, value
);
177 if (!strcmp("http.lowspeedlimit", var
)) {
178 curl_low_speed_limit
= (long)git_config_int(var
, value
);
181 if (!strcmp("http.lowspeedtime", var
)) {
182 curl_low_speed_time
= (long)git_config_int(var
, value
);
186 if (!strcmp("http.noepsv", var
)) {
187 curl_ftp_no_epsv
= git_config_bool(var
, value
);
190 if (!strcmp("http.proxy", var
))
191 return git_config_string(&curl_http_proxy
, var
, value
);
193 if (!strcmp("http.postbuffer", var
)) {
194 http_post_buffer
= git_config_int(var
, value
);
195 if (http_post_buffer
< LARGE_PACKET_MAX
)
196 http_post_buffer
= LARGE_PACKET_MAX
;
200 if (!strcmp("http.useragent", var
))
201 return git_config_string(&user_agent
, var
, value
);
203 /* Fall back on the default ones */
204 return git_default_config(var
, value
, cb
);
207 static void init_curl_http_auth(CURL
*result
)
210 struct strbuf up
= STRBUF_INIT
;
212 user_pass
= xstrdup(git_getpass("Password: "));
213 strbuf_addf(&up
, "%s:%s", user_name
, user_pass
);
214 curl_easy_setopt(result
, CURLOPT_USERPWD
,
215 strbuf_detach(&up
, NULL
));
219 static int has_cert_password(void)
221 if (ssl_cert_password
!= NULL
)
223 if (ssl_cert
== NULL
|| ssl_cert_password_required
!= 1)
225 /* Only prompt the user once. */
226 ssl_cert_password_required
= -1;
227 ssl_cert_password
= git_getpass("Certificate Password: ");
228 if (ssl_cert_password
!= NULL
) {
229 ssl_cert_password
= xstrdup(ssl_cert_password
);
235 static CURL
*get_curl_handle(void)
237 CURL
*result
= curl_easy_init();
239 if (!curl_ssl_verify
) {
240 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 0);
241 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 0);
243 /* Verify authenticity of the peer's certificate */
244 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 1);
245 /* The name in the cert must match whom we tried to connect */
246 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 2);
249 #if LIBCURL_VERSION_NUM >= 0x070907
250 curl_easy_setopt(result
, CURLOPT_NETRC
, CURL_NETRC_OPTIONAL
);
252 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
253 curl_easy_setopt(result
, CURLOPT_HTTPAUTH
, CURLAUTH_ANY
);
256 init_curl_http_auth(result
);
258 if (ssl_cert
!= NULL
)
259 curl_easy_setopt(result
, CURLOPT_SSLCERT
, ssl_cert
);
260 if (has_cert_password())
261 curl_easy_setopt(result
, CURLOPT_KEYPASSWD
, ssl_cert_password
);
262 #if LIBCURL_VERSION_NUM >= 0x070903
264 curl_easy_setopt(result
, CURLOPT_SSLKEY
, ssl_key
);
266 #if LIBCURL_VERSION_NUM >= 0x070908
267 if (ssl_capath
!= NULL
)
268 curl_easy_setopt(result
, CURLOPT_CAPATH
, ssl_capath
);
270 if (ssl_cainfo
!= NULL
)
271 curl_easy_setopt(result
, CURLOPT_CAINFO
, ssl_cainfo
);
272 curl_easy_setopt(result
, CURLOPT_FAILONERROR
, 1);
274 if (curl_low_speed_limit
> 0 && curl_low_speed_time
> 0) {
275 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_LIMIT
,
276 curl_low_speed_limit
);
277 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_TIME
,
278 curl_low_speed_time
);
281 curl_easy_setopt(result
, CURLOPT_FOLLOWLOCATION
, 1);
283 if (getenv("GIT_CURL_VERBOSE"))
284 curl_easy_setopt(result
, CURLOPT_VERBOSE
, 1);
286 curl_easy_setopt(result
, CURLOPT_USERAGENT
,
287 user_agent
? user_agent
: GIT_HTTP_USER_AGENT
);
289 if (curl_ftp_no_epsv
)
290 curl_easy_setopt(result
, CURLOPT_FTP_USE_EPSV
, 0);
293 curl_easy_setopt(result
, CURLOPT_PROXY
, curl_http_proxy
);
298 static void http_auth_init(const char *url
)
300 char *at
, *colon
, *cp
, *slash
;
303 cp
= strstr(url
, "://");
308 * Ok, the URL looks like "proto://something". Which one?
309 * "proto://<user>:<pass>@<host>/...",
310 * "proto://<user>@<host>/...", or just
311 * "proto://<host>/..."?
314 at
= strchr(cp
, '@');
315 colon
= strchr(cp
, ':');
316 slash
= strchrnul(cp
, '/');
317 if (!at
|| slash
<= at
)
318 return; /* No credentials */
319 if (!colon
|| at
<= colon
) {
322 user_name
= xmalloc(len
+ 1);
323 memcpy(user_name
, cp
, len
);
324 user_name
[len
] = '\0';
328 user_name
= xmalloc(len
+ 1);
329 memcpy(user_name
, cp
, len
);
330 user_name
[len
] = '\0';
331 len
= at
- (colon
+ 1);
332 user_pass
= xmalloc(len
+ 1);
333 memcpy(user_pass
, colon
+ 1, len
);
334 user_pass
[len
] = '\0';
338 static void set_from_env(const char **var
, const char *envname
)
340 const char *val
= getenv(envname
);
345 void http_init(struct remote
*remote
)
347 char *low_speed_limit
;
348 char *low_speed_time
;
352 git_config(http_options
, NULL
);
354 curl_global_init(CURL_GLOBAL_ALL
);
356 if (remote
&& remote
->http_proxy
)
357 curl_http_proxy
= xstrdup(remote
->http_proxy
);
359 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
360 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
362 #ifdef USE_CURL_MULTI
364 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
365 if (http_max_requests
!= NULL
)
366 max_requests
= atoi(http_max_requests
);
369 curlm
= curl_multi_init();
371 fprintf(stderr
, "Error creating curl multi handle.\n");
376 if (getenv("GIT_SSL_NO_VERIFY"))
379 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
380 #if LIBCURL_VERSION_NUM >= 0x070903
381 set_from_env(&ssl_key
, "GIT_SSL_KEY");
383 #if LIBCURL_VERSION_NUM >= 0x070908
384 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
386 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
388 set_from_env(&user_agent
, "GIT_HTTP_USER_AGENT");
390 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
391 if (low_speed_limit
!= NULL
)
392 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
393 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
394 if (low_speed_time
!= NULL
)
395 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
397 if (curl_ssl_verify
== -1)
400 curl_session_count
= 0;
401 #ifdef USE_CURL_MULTI
402 if (max_requests
< 1)
403 max_requests
= DEFAULT_MAX_REQUESTS
;
406 if (getenv("GIT_CURL_FTP_NO_EPSV"))
407 curl_ftp_no_epsv
= 1;
409 if (remote
&& remote
->url
&& remote
->url
[0]) {
410 http_auth_init(remote
->url
[0]);
411 if (!ssl_cert_password_required
&&
412 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
413 !prefixcmp(remote
->url
[0], "https://"))
414 ssl_cert_password_required
= 1;
417 #ifndef NO_CURL_EASY_DUPHANDLE
418 curl_default
= get_curl_handle();
422 void http_cleanup(void)
424 struct active_request_slot
*slot
= active_queue_head
;
426 while (slot
!= NULL
) {
427 struct active_request_slot
*next
= slot
->next
;
428 if (slot
->curl
!= NULL
) {
429 #ifdef USE_CURL_MULTI
430 curl_multi_remove_handle(curlm
, slot
->curl
);
432 curl_easy_cleanup(slot
->curl
);
437 active_queue_head
= NULL
;
439 #ifndef NO_CURL_EASY_DUPHANDLE
440 curl_easy_cleanup(curl_default
);
443 #ifdef USE_CURL_MULTI
444 curl_multi_cleanup(curlm
);
446 curl_global_cleanup();
448 curl_slist_free_all(pragma_header
);
449 pragma_header
= NULL
;
451 curl_slist_free_all(no_pragma_header
);
452 no_pragma_header
= NULL
;
454 if (curl_http_proxy
) {
455 free((void *)curl_http_proxy
);
456 curl_http_proxy
= NULL
;
459 if (ssl_cert_password
!= NULL
) {
460 memset(ssl_cert_password
, 0, strlen(ssl_cert_password
));
461 free(ssl_cert_password
);
462 ssl_cert_password
= NULL
;
464 ssl_cert_password_required
= 0;
467 struct active_request_slot
*get_active_slot(void)
469 struct active_request_slot
*slot
= active_queue_head
;
470 struct active_request_slot
*newslot
;
472 #ifdef USE_CURL_MULTI
475 /* Wait for a slot to open up if the queue is full */
476 while (active_requests
>= max_requests
) {
477 curl_multi_perform(curlm
, &num_transfers
);
478 if (num_transfers
< active_requests
)
479 process_curl_messages();
483 while (slot
!= NULL
&& slot
->in_use
)
487 newslot
= xmalloc(sizeof(*newslot
));
488 newslot
->curl
= NULL
;
490 newslot
->next
= NULL
;
492 slot
= active_queue_head
;
494 active_queue_head
= newslot
;
496 while (slot
->next
!= NULL
)
498 slot
->next
= newslot
;
503 if (slot
->curl
== NULL
) {
504 #ifdef NO_CURL_EASY_DUPHANDLE
505 slot
->curl
= get_curl_handle();
507 slot
->curl
= curl_easy_duphandle(curl_default
);
509 curl_session_count
++;
515 slot
->results
= NULL
;
516 slot
->finished
= NULL
;
517 slot
->callback_data
= NULL
;
518 slot
->callback_func
= NULL
;
519 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
520 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
521 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
522 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
523 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
524 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
525 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
530 int start_active_slot(struct active_request_slot
*slot
)
532 #ifdef USE_CURL_MULTI
533 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
536 if (curlm_result
!= CURLM_OK
&&
537 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
544 * We know there must be something to do, since we just added
547 curl_multi_perform(curlm
, &num_transfers
);
552 #ifdef USE_CURL_MULTI
556 struct fill_chain
*next
;
559 static struct fill_chain
*fill_cfg
;
561 void add_fill_function(void *data
, int (*fill
)(void *))
563 struct fill_chain
*new = xmalloc(sizeof(*new));
564 struct fill_chain
**linkp
= &fill_cfg
;
569 linkp
= &(*linkp
)->next
;
573 void fill_active_slots(void)
575 struct active_request_slot
*slot
= active_queue_head
;
577 while (active_requests
< max_requests
) {
578 struct fill_chain
*fill
;
579 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
580 if (fill
->fill(fill
->data
))
587 while (slot
!= NULL
) {
588 if (!slot
->in_use
&& slot
->curl
!= NULL
589 && curl_session_count
> min_curl_sessions
) {
590 curl_easy_cleanup(slot
->curl
);
592 curl_session_count
--;
598 void step_active_slots(void)
601 CURLMcode curlm_result
;
604 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
605 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
606 if (num_transfers
< active_requests
) {
607 process_curl_messages();
613 void run_active_slot(struct active_request_slot
*slot
)
615 #ifdef USE_CURL_MULTI
622 struct timeval select_timeout
;
625 slot
->finished
= &finished
;
630 if (!data_received
&& slot
->local
!= NULL
) {
631 current_pos
= ftell(slot
->local
);
632 if (current_pos
> last_pos
)
634 last_pos
= current_pos
;
637 if (slot
->in_use
&& !data_received
) {
642 select_timeout
.tv_sec
= 0;
643 select_timeout
.tv_usec
= 50000;
644 select(max_fd
, &readfds
, &writefds
,
645 &excfds
, &select_timeout
);
649 while (slot
->in_use
) {
650 slot
->curl_result
= curl_easy_perform(slot
->curl
);
651 finish_active_slot(slot
);
656 static void closedown_active_slot(struct active_request_slot
*slot
)
662 static void release_active_slot(struct active_request_slot
*slot
)
664 closedown_active_slot(slot
);
665 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
666 #ifdef USE_CURL_MULTI
667 curl_multi_remove_handle(curlm
, slot
->curl
);
669 curl_easy_cleanup(slot
->curl
);
671 curl_session_count
--;
673 #ifdef USE_CURL_MULTI
678 void finish_active_slot(struct active_request_slot
*slot
)
680 closedown_active_slot(slot
);
681 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CODE
, &slot
->http_code
);
683 if (slot
->finished
!= NULL
)
684 (*slot
->finished
) = 1;
686 /* Store slot results so they can be read after the slot is reused */
687 if (slot
->results
!= NULL
) {
688 slot
->results
->curl_result
= slot
->curl_result
;
689 slot
->results
->http_code
= slot
->http_code
;
692 /* Run callback if appropriate */
693 if (slot
->callback_func
!= NULL
)
694 slot
->callback_func(slot
->callback_data
);
697 void finish_all_active_slots(void)
699 struct active_request_slot
*slot
= active_queue_head
;
703 run_active_slot(slot
);
704 slot
= active_queue_head
;
710 /* Helpers for modifying and creating URLs */
711 static inline int needs_quote(int ch
)
713 if (((ch
>= 'A') && (ch
<= 'Z'))
714 || ((ch
>= 'a') && (ch
<= 'z'))
715 || ((ch
>= '0') && (ch
<= '9'))
723 static inline int hex(int v
)
731 void end_url_with_slash(struct strbuf
*buf
, const char *url
)
733 strbuf_addstr(buf
, url
);
734 if (buf
->len
&& buf
->buf
[buf
->len
- 1] != '/')
735 strbuf_addstr(buf
, "/");
738 static char *quote_ref_url(const char *base
, const char *ref
)
740 struct strbuf buf
= STRBUF_INIT
;
744 end_url_with_slash(&buf
, base
);
746 for (cp
= ref
; (ch
= *cp
) != 0; cp
++)
748 strbuf_addf(&buf
, "%%%02x", ch
);
750 strbuf_addch(&buf
, *cp
);
752 return strbuf_detach(&buf
, NULL
);
755 void append_remote_object_url(struct strbuf
*buf
, const char *url
,
757 int only_two_digit_prefix
)
759 end_url_with_slash(buf
, url
);
761 strbuf_addf(buf
, "objects/%.*s/", 2, hex
);
762 if (!only_two_digit_prefix
)
763 strbuf_addf(buf
, "%s", hex
+2);
766 char *get_remote_object_url(const char *url
, const char *hex
,
767 int only_two_digit_prefix
)
769 struct strbuf buf
= STRBUF_INIT
;
770 append_remote_object_url(&buf
, url
, hex
, only_two_digit_prefix
);
771 return strbuf_detach(&buf
, NULL
);
774 /* http_request() targets */
775 #define HTTP_REQUEST_STRBUF 0
776 #define HTTP_REQUEST_FILE 1
778 static int http_request(const char *url
, void *result
, int target
, int options
)
780 struct active_request_slot
*slot
;
781 struct slot_results results
;
782 struct curl_slist
*headers
= NULL
;
783 struct strbuf buf
= STRBUF_INIT
;
786 slot
= get_active_slot();
787 slot
->results
= &results
;
788 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
790 if (result
== NULL
) {
791 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 1);
793 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
794 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, result
);
796 if (target
== HTTP_REQUEST_FILE
) {
797 long posn
= ftell(result
);
798 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
801 strbuf_addf(&buf
, "Range: bytes=%ld-", posn
);
802 headers
= curl_slist_append(headers
, buf
.buf
);
805 slot
->local
= result
;
807 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
811 strbuf_addstr(&buf
, "Pragma:");
812 if (options
& HTTP_NO_CACHE
)
813 strbuf_addstr(&buf
, " no-cache");
815 headers
= curl_slist_append(headers
, buf
.buf
);
817 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, url
);
818 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
820 if (start_active_slot(slot
)) {
821 run_active_slot(slot
);
822 if (results
.curl_result
== CURLE_OK
)
824 else if (missing_target(&results
))
825 ret
= HTTP_MISSING_TARGET
;
826 else if (results
.http_code
== 401) {
831 * git_getpass is needed here because its very likely stdin/stdout are
832 * pipes to our parent process. So we instead need to use /dev/tty,
833 * but that is non-portable. Using git_getpass() can at least be stubbed
834 * on other platforms with a different implementation if/when necessary.
836 user_name
= xstrdup(git_getpass("Username: "));
837 init_curl_http_auth(slot
->curl
);
843 error("Unable to start HTTP request for %s", url
);
844 ret
= HTTP_START_FAILED
;
848 curl_slist_free_all(headers
);
849 strbuf_release(&buf
);
854 int http_get_strbuf(const char *url
, struct strbuf
*result
, int options
)
856 int http_ret
= http_request(url
, result
, HTTP_REQUEST_STRBUF
, options
);
857 if (http_ret
== HTTP_REAUTH
) {
858 http_ret
= http_request(url
, result
, HTTP_REQUEST_STRBUF
, options
);
864 * Downloads an url and stores the result in the given file.
866 * If a previous interrupted download is detected (i.e. a previous temporary
867 * file is still around) the download is resumed.
869 static int http_get_file(const char *url
, const char *filename
, int options
)
872 struct strbuf tmpfile
= STRBUF_INIT
;
875 strbuf_addf(&tmpfile
, "%s.temp", filename
);
876 result
= fopen(tmpfile
.buf
, "a");
878 error("Unable to open local file %s", tmpfile
.buf
);
883 ret
= http_request(url
, result
, HTTP_REQUEST_FILE
, options
);
886 if ((ret
== HTTP_OK
) && move_temp_to_file(tmpfile
.buf
, filename
))
889 strbuf_release(&tmpfile
);
893 int http_error(const char *url
, int ret
)
895 /* http_request has already handled HTTP_START_FAILED. */
896 if (ret
!= HTTP_START_FAILED
)
897 error("%s while accessing %s\n", curl_errorstr
, url
);
902 int http_fetch_ref(const char *base
, struct ref
*ref
)
905 struct strbuf buffer
= STRBUF_INIT
;
908 url
= quote_ref_url(base
, ref
->name
);
909 if (http_get_strbuf(url
, &buffer
, HTTP_NO_CACHE
) == HTTP_OK
) {
910 strbuf_rtrim(&buffer
);
911 if (buffer
.len
== 40)
912 ret
= get_sha1_hex(buffer
.buf
, ref
->old_sha1
);
913 else if (!prefixcmp(buffer
.buf
, "ref: ")) {
914 ref
->symref
= xstrdup(buffer
.buf
+ 5);
919 strbuf_release(&buffer
);
924 /* Helpers for fetching packs */
925 static char *fetch_pack_index(unsigned char *sha1
, const char *base_url
)
928 struct strbuf buf
= STRBUF_INIT
;
931 fprintf(stderr
, "Getting index for pack %s\n", sha1_to_hex(sha1
));
933 end_url_with_slash(&buf
, base_url
);
934 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", sha1_to_hex(sha1
));
935 url
= strbuf_detach(&buf
, NULL
);
937 strbuf_addf(&buf
, "%s.temp", sha1_pack_index_name(sha1
));
938 tmp
= strbuf_detach(&buf
, NULL
);
940 if (http_get_file(url
, tmp
, 0) != HTTP_OK
) {
941 error("Unable to get pack index %s\n", url
);
950 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
951 unsigned char *sha1
, const char *base_url
)
953 struct packed_git
*new_pack
;
954 char *tmp_idx
= NULL
;
957 if (has_pack_index(sha1
)) {
958 new_pack
= parse_pack_index(sha1
, NULL
);
960 return -1; /* parse_pack_index() already issued error message */
964 tmp_idx
= fetch_pack_index(sha1
, base_url
);
968 new_pack
= parse_pack_index(sha1
, tmp_idx
);
973 return -1; /* parse_pack_index() already issued error message */
976 ret
= verify_pack_index(new_pack
);
978 close_pack_index(new_pack
);
979 ret
= move_temp_to_file(tmp_idx
, sha1_pack_index_name(sha1
));
986 new_pack
->next
= *packs_head
;
987 *packs_head
= new_pack
;
991 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
995 struct strbuf buf
= STRBUF_INIT
;
996 unsigned char sha1
[20];
998 end_url_with_slash(&buf
, base_url
);
999 strbuf_addstr(&buf
, "objects/info/packs");
1000 url
= strbuf_detach(&buf
, NULL
);
1002 ret
= http_get_strbuf(url
, &buf
, HTTP_NO_CACHE
);
1007 while (i
< buf
.len
) {
1011 if (i
+ 52 <= buf
.len
&&
1012 !prefixcmp(data
+ i
, " pack-") &&
1013 !prefixcmp(data
+ i
+ 46, ".pack\n")) {
1014 get_sha1_hex(data
+ i
+ 6, sha1
);
1015 fetch_and_setup_pack_index(packs_head
, sha1
,
1021 while (i
< buf
.len
&& data
[i
] != '\n')
1032 void release_http_pack_request(struct http_pack_request
*preq
)
1034 if (preq
->packfile
!= NULL
) {
1035 fclose(preq
->packfile
);
1036 preq
->packfile
= NULL
;
1037 preq
->slot
->local
= NULL
;
1039 if (preq
->range_header
!= NULL
) {
1040 curl_slist_free_all(preq
->range_header
);
1041 preq
->range_header
= NULL
;
1047 int finish_http_pack_request(struct http_pack_request
*preq
)
1049 struct packed_git
**lst
;
1050 struct packed_git
*p
= preq
->target
;
1052 struct child_process ip
;
1053 const char *ip_argv
[8];
1055 close_pack_index(p
);
1057 fclose(preq
->packfile
);
1058 preq
->packfile
= NULL
;
1059 preq
->slot
->local
= NULL
;
1063 lst
= &((*lst
)->next
);
1064 *lst
= (*lst
)->next
;
1066 tmp_idx
= xstrdup(preq
->tmpfile
);
1067 strcpy(tmp_idx
+ strlen(tmp_idx
) - strlen(".pack.temp"),
1070 ip_argv
[0] = "index-pack";
1072 ip_argv
[2] = tmp_idx
;
1073 ip_argv
[3] = preq
->tmpfile
;
1076 memset(&ip
, 0, sizeof(ip
));
1082 if (run_command(&ip
)) {
1083 unlink(preq
->tmpfile
);
1089 unlink(sha1_pack_index_name(p
->sha1
));
1091 if (move_temp_to_file(preq
->tmpfile
, sha1_pack_name(p
->sha1
))
1092 || move_temp_to_file(tmp_idx
, sha1_pack_index_name(p
->sha1
))) {
1097 install_packed_git(p
);
1102 struct http_pack_request
*new_http_pack_request(
1103 struct packed_git
*target
, const char *base_url
)
1106 char range
[RANGE_HEADER_SIZE
];
1107 struct strbuf buf
= STRBUF_INIT
;
1108 struct http_pack_request
*preq
;
1110 preq
= xmalloc(sizeof(*preq
));
1111 preq
->target
= target
;
1112 preq
->range_header
= NULL
;
1114 end_url_with_slash(&buf
, base_url
);
1115 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1116 sha1_to_hex(target
->sha1
));
1117 preq
->url
= strbuf_detach(&buf
, NULL
);
1119 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp",
1120 sha1_pack_name(target
->sha1
));
1121 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1122 if (!preq
->packfile
) {
1123 error("Unable to open local file %s for pack",
1128 preq
->slot
= get_active_slot();
1129 preq
->slot
->local
= preq
->packfile
;
1130 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1131 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1132 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1133 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1137 * If there is data present from a previous transfer attempt,
1138 * resume where it left off
1140 prev_posn
= ftell(preq
->packfile
);
1142 if (http_is_verbose
)
1144 "Resuming fetch of pack %s at byte %ld\n",
1145 sha1_to_hex(target
->sha1
), prev_posn
);
1146 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1147 preq
->range_header
= curl_slist_append(NULL
, range
);
1148 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1149 preq
->range_header
);
1160 /* Helpers for fetching objects (loose) */
1161 static size_t fwrite_sha1_file(void *ptr
, size_t eltsize
, size_t nmemb
,
1164 unsigned char expn
[4096];
1165 size_t size
= eltsize
* nmemb
;
1167 struct http_object_request
*freq
=
1168 (struct http_object_request
*)data
;
1170 ssize_t retval
= xwrite(freq
->localfile
,
1171 (char *) ptr
+ posn
, size
- posn
);
1175 } while (posn
< size
);
1177 freq
->stream
.avail_in
= size
;
1178 freq
->stream
.next_in
= ptr
;
1180 freq
->stream
.next_out
= expn
;
1181 freq
->stream
.avail_out
= sizeof(expn
);
1182 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1183 git_SHA1_Update(&freq
->c
, expn
,
1184 sizeof(expn
) - freq
->stream
.avail_out
);
1185 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1190 struct http_object_request
*new_http_object_request(const char *base_url
,
1191 unsigned char *sha1
)
1193 char *hex
= sha1_to_hex(sha1
);
1195 char prevfile
[PATH_MAX
];
1197 unsigned char prev_buf
[PREV_BUF_SIZE
];
1198 ssize_t prev_read
= 0;
1200 char range
[RANGE_HEADER_SIZE
];
1201 struct curl_slist
*range_header
= NULL
;
1202 struct http_object_request
*freq
;
1204 freq
= xmalloc(sizeof(*freq
));
1205 hashcpy(freq
->sha1
, sha1
);
1206 freq
->localfile
= -1;
1208 filename
= sha1_file_name(sha1
);
1209 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1210 "%s.temp", filename
);
1212 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1213 unlink_or_warn(prevfile
);
1214 rename(freq
->tmpfile
, prevfile
);
1215 unlink_or_warn(freq
->tmpfile
);
1217 if (freq
->localfile
!= -1)
1218 error("fd leakage in start: %d", freq
->localfile
);
1219 freq
->localfile
= open(freq
->tmpfile
,
1220 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1222 * This could have failed due to the "lazy directory creation";
1223 * try to mkdir the last path component.
1225 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1226 char *dir
= strrchr(freq
->tmpfile
, '/');
1229 mkdir(freq
->tmpfile
, 0777);
1232 freq
->localfile
= open(freq
->tmpfile
,
1233 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1236 if (freq
->localfile
< 0) {
1237 error("Couldn't create temporary file %s: %s",
1238 freq
->tmpfile
, strerror(errno
));
1242 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1244 git_inflate_init(&freq
->stream
);
1246 git_SHA1_Init(&freq
->c
);
1248 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1251 * If a previous temp file is present, process what was already
1254 prevlocal
= open(prevfile
, O_RDONLY
);
1255 if (prevlocal
!= -1) {
1257 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1259 if (fwrite_sha1_file(prev_buf
,
1262 freq
) == prev_read
) {
1263 prev_posn
+= prev_read
;
1268 } while (prev_read
> 0);
1271 unlink_or_warn(prevfile
);
1274 * Reset inflate/SHA1 if there was an error reading the previous temp
1275 * file; also rewind to the beginning of the local file.
1277 if (prev_read
== -1) {
1278 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1279 git_inflate_init(&freq
->stream
);
1280 git_SHA1_Init(&freq
->c
);
1283 lseek(freq
->localfile
, 0, SEEK_SET
);
1284 if (ftruncate(freq
->localfile
, 0) < 0) {
1285 error("Couldn't truncate temporary file %s: %s",
1286 freq
->tmpfile
, strerror(errno
));
1292 freq
->slot
= get_active_slot();
1294 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1295 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1296 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1297 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1298 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1301 * If we have successfully processed data from a previous fetch
1302 * attempt, only fetch the data we don't already have.
1305 if (http_is_verbose
)
1307 "Resuming fetch of object %s at byte %ld\n",
1309 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1310 range_header
= curl_slist_append(range_header
, range
);
1311 curl_easy_setopt(freq
->slot
->curl
,
1312 CURLOPT_HTTPHEADER
, range_header
);
1324 void process_http_object_request(struct http_object_request
*freq
)
1326 if (freq
->slot
== NULL
)
1328 freq
->curl_result
= freq
->slot
->curl_result
;
1329 freq
->http_code
= freq
->slot
->http_code
;
1333 int finish_http_object_request(struct http_object_request
*freq
)
1337 close(freq
->localfile
);
1338 freq
->localfile
= -1;
1340 process_http_object_request(freq
);
1342 if (freq
->http_code
== 416) {
1343 warning("requested range invalid; we may already have all the data.");
1344 } else if (freq
->curl_result
!= CURLE_OK
) {
1345 if (stat(freq
->tmpfile
, &st
) == 0)
1346 if (st
.st_size
== 0)
1347 unlink_or_warn(freq
->tmpfile
);
1351 git_inflate_end(&freq
->stream
);
1352 git_SHA1_Final(freq
->real_sha1
, &freq
->c
);
1353 if (freq
->zret
!= Z_STREAM_END
) {
1354 unlink_or_warn(freq
->tmpfile
);
1357 if (hashcmp(freq
->sha1
, freq
->real_sha1
)) {
1358 unlink_or_warn(freq
->tmpfile
);
1362 move_temp_to_file(freq
->tmpfile
, sha1_file_name(freq
->sha1
));
1364 return freq
->rename
;
1367 void abort_http_object_request(struct http_object_request
*freq
)
1369 unlink_or_warn(freq
->tmpfile
);
1371 release_http_object_request(freq
);
1374 void release_http_object_request(struct http_object_request
*freq
)
1376 if (freq
->localfile
!= -1) {
1377 close(freq
->localfile
);
1378 freq
->localfile
= -1;
1380 if (freq
->url
!= NULL
) {
1384 if (freq
->slot
!= NULL
) {
1385 freq
->slot
->callback_func
= NULL
;
1386 freq
->slot
->callback_data
= NULL
;
1387 release_active_slot(freq
->slot
);