4 #include "run-command.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 char *user_name
, *user_pass
;
45 static const char *user_agent
;
47 #if LIBCURL_VERSION_NUM >= 0x071700
48 /* Use CURLOPT_KEYPASSWD as is */
49 #elif LIBCURL_VERSION_NUM >= 0x070903
50 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
52 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
55 static char *ssl_cert_password
;
56 static int ssl_cert_password_required
;
58 static struct curl_slist
*pragma_header
;
59 static struct curl_slist
*no_pragma_header
;
61 static struct active_request_slot
*active_queue_head
;
63 size_t fread_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
65 size_t size
= eltsize
* nmemb
;
66 struct buffer
*buffer
= buffer_
;
68 if (size
> buffer
->buf
.len
- buffer
->posn
)
69 size
= buffer
->buf
.len
- buffer
->posn
;
70 memcpy(ptr
, buffer
->buf
.buf
+ buffer
->posn
, size
);
77 curlioerr
ioctl_buffer(CURL
*handle
, int cmd
, void *clientp
)
79 struct buffer
*buffer
= clientp
;
85 case CURLIOCMD_RESTARTREAD
:
90 return CURLIOE_UNKNOWNCMD
;
95 size_t fwrite_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
97 size_t size
= eltsize
* nmemb
;
98 struct strbuf
*buffer
= buffer_
;
100 strbuf_add(buffer
, ptr
, size
);
105 size_t fwrite_null(char *ptr
, size_t eltsize
, size_t nmemb
, void *strbuf
)
108 return eltsize
* nmemb
;
111 #ifdef USE_CURL_MULTI
112 static void process_curl_messages(void)
115 struct active_request_slot
*slot
;
116 CURLMsg
*curl_message
= curl_multi_info_read(curlm
, &num_messages
);
118 while (curl_message
!= NULL
) {
119 if (curl_message
->msg
== CURLMSG_DONE
) {
120 int curl_result
= curl_message
->data
.result
;
121 slot
= active_queue_head
;
122 while (slot
!= NULL
&&
123 slot
->curl
!= curl_message
->easy_handle
)
126 curl_multi_remove_handle(curlm
, slot
->curl
);
127 slot
->curl_result
= curl_result
;
128 finish_active_slot(slot
);
130 fprintf(stderr
, "Received DONE message for unknown request!\n");
133 fprintf(stderr
, "Unknown CURL message received: %d\n",
134 (int)curl_message
->msg
);
136 curl_message
= curl_multi_info_read(curlm
, &num_messages
);
141 static int http_options(const char *var
, const char *value
, void *cb
)
143 if (!strcmp("http.sslverify", var
)) {
144 curl_ssl_verify
= git_config_bool(var
, value
);
147 if (!strcmp("http.sslcert", var
))
148 return git_config_string(&ssl_cert
, var
, value
);
149 #if LIBCURL_VERSION_NUM >= 0x070903
150 if (!strcmp("http.sslkey", var
))
151 return git_config_string(&ssl_key
, var
, value
);
153 #if LIBCURL_VERSION_NUM >= 0x070908
154 if (!strcmp("http.sslcapath", var
))
155 return git_config_string(&ssl_capath
, var
, value
);
157 if (!strcmp("http.sslcainfo", var
))
158 return git_config_string(&ssl_cainfo
, var
, value
);
159 if (!strcmp("http.sslcertpasswordprotected", var
)) {
160 if (git_config_bool(var
, value
))
161 ssl_cert_password_required
= 1;
164 if (!strcmp("http.minsessions", var
)) {
165 min_curl_sessions
= git_config_int(var
, value
);
166 #ifndef USE_CURL_MULTI
167 if (min_curl_sessions
> 1)
168 min_curl_sessions
= 1;
172 #ifdef USE_CURL_MULTI
173 if (!strcmp("http.maxrequests", var
)) {
174 max_requests
= git_config_int(var
, value
);
178 if (!strcmp("http.lowspeedlimit", var
)) {
179 curl_low_speed_limit
= (long)git_config_int(var
, value
);
182 if (!strcmp("http.lowspeedtime", var
)) {
183 curl_low_speed_time
= (long)git_config_int(var
, value
);
187 if (!strcmp("http.noepsv", var
)) {
188 curl_ftp_no_epsv
= git_config_bool(var
, value
);
191 if (!strcmp("http.proxy", var
))
192 return git_config_string(&curl_http_proxy
, var
, value
);
194 if (!strcmp("http.postbuffer", var
)) {
195 http_post_buffer
= git_config_int(var
, value
);
196 if (http_post_buffer
< LARGE_PACKET_MAX
)
197 http_post_buffer
= LARGE_PACKET_MAX
;
201 if (!strcmp("http.useragent", var
))
202 return git_config_string(&user_agent
, var
, value
);
204 /* Fall back on the default ones */
205 return git_default_config(var
, value
, cb
);
208 static void init_curl_http_auth(CURL
*result
)
211 struct strbuf up
= STRBUF_INIT
;
213 user_pass
= xstrdup(git_getpass("Password: "));
214 strbuf_addf(&up
, "%s:%s", user_name
, user_pass
);
215 curl_easy_setopt(result
, CURLOPT_USERPWD
,
216 strbuf_detach(&up
, NULL
));
220 static int has_cert_password(void)
222 if (ssl_cert_password
!= NULL
)
224 if (ssl_cert
== NULL
|| ssl_cert_password_required
!= 1)
226 /* Only prompt the user once. */
227 ssl_cert_password_required
= -1;
228 ssl_cert_password
= git_getpass("Certificate Password: ");
229 if (ssl_cert_password
!= NULL
) {
230 ssl_cert_password
= xstrdup(ssl_cert_password
);
236 /* curl 7.25.0 has CURLOPT_TCP_KEEPALIVE, too, but we support older curl */
237 static int sockopt_callback(void *client
, curl_socket_t fd
, curlsocktype type
)
241 socklen_t len
= (socklen_t
)sizeof(ka
);
243 if (type
!= CURLSOCKTYPE_IPCXN
)
246 rc
= setsockopt(fd
, SOL_SOCKET
, SO_KEEPALIVE
, (void *)&ka
, len
);
248 warning("unable to set SO_KEEPALIVE on socket %s",
251 return 0; /* CURL_SOCKOPT_OK only exists since curl 7.21.5 */
254 static CURL
*get_curl_handle(void)
256 CURL
*result
= curl_easy_init();
258 if (!curl_ssl_verify
) {
259 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 0);
260 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 0);
262 /* Verify authenticity of the peer's certificate */
263 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 1);
264 /* The name in the cert must match whom we tried to connect */
265 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 2);
268 #if LIBCURL_VERSION_NUM >= 0x070907
269 curl_easy_setopt(result
, CURLOPT_NETRC
, CURL_NETRC_OPTIONAL
);
271 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
272 curl_easy_setopt(result
, CURLOPT_HTTPAUTH
, CURLAUTH_ANY
);
275 init_curl_http_auth(result
);
277 if (ssl_cert
!= NULL
)
278 curl_easy_setopt(result
, CURLOPT_SSLCERT
, ssl_cert
);
279 if (has_cert_password())
280 curl_easy_setopt(result
, CURLOPT_KEYPASSWD
, ssl_cert_password
);
281 #if LIBCURL_VERSION_NUM >= 0x070903
283 curl_easy_setopt(result
, CURLOPT_SSLKEY
, ssl_key
);
285 #if LIBCURL_VERSION_NUM >= 0x070908
286 if (ssl_capath
!= NULL
)
287 curl_easy_setopt(result
, CURLOPT_CAPATH
, ssl_capath
);
289 if (ssl_cainfo
!= NULL
)
290 curl_easy_setopt(result
, CURLOPT_CAINFO
, ssl_cainfo
);
291 curl_easy_setopt(result
, CURLOPT_FAILONERROR
, 1);
293 if (curl_low_speed_limit
> 0 && curl_low_speed_time
> 0) {
294 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_LIMIT
,
295 curl_low_speed_limit
);
296 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_TIME
,
297 curl_low_speed_time
);
300 curl_easy_setopt(result
, CURLOPT_FOLLOWLOCATION
, 1);
301 #if LIBCURL_VERSION_NUM >= 0x071301
302 curl_easy_setopt(result
, CURLOPT_POSTREDIR
, CURL_REDIR_POST_ALL
);
303 #elif LIBCURL_VERSION_NUM >= 0x071101
304 curl_easy_setopt(result
, CURLOPT_POST301
, 1);
307 if (getenv("GIT_CURL_VERBOSE"))
308 curl_easy_setopt(result
, CURLOPT_VERBOSE
, 1);
310 curl_easy_setopt(result
, CURLOPT_USERAGENT
,
311 user_agent
? user_agent
: GIT_HTTP_USER_AGENT
);
313 if (curl_ftp_no_epsv
)
314 curl_easy_setopt(result
, CURLOPT_FTP_USE_EPSV
, 0);
317 curl_easy_setopt(result
, CURLOPT_PROXY
, curl_http_proxy
);
319 #if LIBCURL_VERSION_NUM >= 0x071000
320 curl_easy_setopt(result
, CURLOPT_SOCKOPTFUNCTION
, sockopt_callback
);
326 static void http_auth_init(const char *url
)
328 char *at
, *colon
, *cp
, *slash
, *decoded
;
331 cp
= strstr(url
, "://");
336 * Ok, the URL looks like "proto://something". Which one?
337 * "proto://<user>:<pass>@<host>/...",
338 * "proto://<user>@<host>/...", or just
339 * "proto://<host>/..."?
342 at
= strchr(cp
, '@');
343 colon
= strchr(cp
, ':');
344 slash
= strchrnul(cp
, '/');
345 if (!at
|| slash
<= at
)
346 return; /* No credentials */
347 if (!colon
|| at
<= colon
) {
350 user_name
= xmalloc(len
+ 1);
351 memcpy(user_name
, cp
, len
);
352 user_name
[len
] = '\0';
353 decoded
= url_decode(user_name
);
359 user_name
= xmalloc(len
+ 1);
360 memcpy(user_name
, cp
, len
);
361 user_name
[len
] = '\0';
362 decoded
= url_decode(user_name
);
365 len
= at
- (colon
+ 1);
366 user_pass
= xmalloc(len
+ 1);
367 memcpy(user_pass
, colon
+ 1, len
);
368 user_pass
[len
] = '\0';
369 decoded
= url_decode(user_pass
);
375 static void set_from_env(const char **var
, const char *envname
)
377 const char *val
= getenv(envname
);
382 void http_init(struct remote
*remote
)
384 char *low_speed_limit
;
385 char *low_speed_time
;
389 git_config(http_options
, NULL
);
391 curl_global_init(CURL_GLOBAL_ALL
);
393 if (remote
&& remote
->http_proxy
)
394 curl_http_proxy
= xstrdup(remote
->http_proxy
);
396 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
397 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
399 #ifdef USE_CURL_MULTI
401 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
402 if (http_max_requests
!= NULL
)
403 max_requests
= atoi(http_max_requests
);
406 curlm
= curl_multi_init();
408 fprintf(stderr
, "Error creating curl multi handle.\n");
413 if (getenv("GIT_SSL_NO_VERIFY"))
416 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
417 #if LIBCURL_VERSION_NUM >= 0x070903
418 set_from_env(&ssl_key
, "GIT_SSL_KEY");
420 #if LIBCURL_VERSION_NUM >= 0x070908
421 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
423 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
425 set_from_env(&user_agent
, "GIT_HTTP_USER_AGENT");
427 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
428 if (low_speed_limit
!= NULL
)
429 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
430 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
431 if (low_speed_time
!= NULL
)
432 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
434 if (curl_ssl_verify
== -1)
437 curl_session_count
= 0;
438 #ifdef USE_CURL_MULTI
439 if (max_requests
< 1)
440 max_requests
= DEFAULT_MAX_REQUESTS
;
443 if (getenv("GIT_CURL_FTP_NO_EPSV"))
444 curl_ftp_no_epsv
= 1;
446 if (remote
&& remote
->url
&& remote
->url
[0]) {
447 http_auth_init(remote
->url
[0]);
448 if (!ssl_cert_password_required
&&
449 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
450 !prefixcmp(remote
->url
[0], "https://"))
451 ssl_cert_password_required
= 1;
454 #ifndef NO_CURL_EASY_DUPHANDLE
455 curl_default
= get_curl_handle();
459 void http_cleanup(void)
461 struct active_request_slot
*slot
= active_queue_head
;
463 while (slot
!= NULL
) {
464 struct active_request_slot
*next
= slot
->next
;
465 if (slot
->curl
!= NULL
) {
466 #ifdef USE_CURL_MULTI
467 curl_multi_remove_handle(curlm
, slot
->curl
);
469 curl_easy_cleanup(slot
->curl
);
474 active_queue_head
= NULL
;
476 #ifndef NO_CURL_EASY_DUPHANDLE
477 curl_easy_cleanup(curl_default
);
480 #ifdef USE_CURL_MULTI
481 curl_multi_cleanup(curlm
);
483 curl_global_cleanup();
485 curl_slist_free_all(pragma_header
);
486 pragma_header
= NULL
;
488 curl_slist_free_all(no_pragma_header
);
489 no_pragma_header
= NULL
;
491 if (curl_http_proxy
) {
492 free((void *)curl_http_proxy
);
493 curl_http_proxy
= NULL
;
496 if (ssl_cert_password
!= NULL
) {
497 memset(ssl_cert_password
, 0, strlen(ssl_cert_password
));
498 free(ssl_cert_password
);
499 ssl_cert_password
= NULL
;
501 ssl_cert_password_required
= 0;
504 struct active_request_slot
*get_active_slot(void)
506 struct active_request_slot
*slot
= active_queue_head
;
507 struct active_request_slot
*newslot
;
509 #ifdef USE_CURL_MULTI
512 /* Wait for a slot to open up if the queue is full */
513 while (active_requests
>= max_requests
) {
514 curl_multi_perform(curlm
, &num_transfers
);
515 if (num_transfers
< active_requests
)
516 process_curl_messages();
520 while (slot
!= NULL
&& slot
->in_use
)
524 newslot
= xmalloc(sizeof(*newslot
));
525 newslot
->curl
= NULL
;
527 newslot
->next
= NULL
;
529 slot
= active_queue_head
;
531 active_queue_head
= newslot
;
533 while (slot
->next
!= NULL
)
535 slot
->next
= newslot
;
540 if (slot
->curl
== NULL
) {
541 #ifdef NO_CURL_EASY_DUPHANDLE
542 slot
->curl
= get_curl_handle();
544 slot
->curl
= curl_easy_duphandle(curl_default
);
546 curl_session_count
++;
552 slot
->results
= NULL
;
553 slot
->finished
= NULL
;
554 slot
->callback_data
= NULL
;
555 slot
->callback_func
= NULL
;
556 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
557 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
558 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
559 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
560 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
561 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, NULL
);
562 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
563 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
568 int start_active_slot(struct active_request_slot
*slot
)
570 #ifdef USE_CURL_MULTI
571 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
574 if (curlm_result
!= CURLM_OK
&&
575 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
582 * We know there must be something to do, since we just added
585 curl_multi_perform(curlm
, &num_transfers
);
590 #ifdef USE_CURL_MULTI
594 struct fill_chain
*next
;
597 static struct fill_chain
*fill_cfg
;
599 void add_fill_function(void *data
, int (*fill
)(void *))
601 struct fill_chain
*new = xmalloc(sizeof(*new));
602 struct fill_chain
**linkp
= &fill_cfg
;
607 linkp
= &(*linkp
)->next
;
611 void fill_active_slots(void)
613 struct active_request_slot
*slot
= active_queue_head
;
615 while (active_requests
< max_requests
) {
616 struct fill_chain
*fill
;
617 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
618 if (fill
->fill(fill
->data
))
625 while (slot
!= NULL
) {
626 if (!slot
->in_use
&& slot
->curl
!= NULL
627 && curl_session_count
> min_curl_sessions
) {
628 curl_easy_cleanup(slot
->curl
);
630 curl_session_count
--;
636 void step_active_slots(void)
639 CURLMcode curlm_result
;
642 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
643 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
644 if (num_transfers
< active_requests
) {
645 process_curl_messages();
651 void run_active_slot(struct active_request_slot
*slot
)
653 #ifdef USE_CURL_MULTI
660 struct timeval select_timeout
;
663 slot
->finished
= &finished
;
668 if (!data_received
&& slot
->local
!= NULL
) {
669 current_pos
= ftell(slot
->local
);
670 if (current_pos
> last_pos
)
672 last_pos
= current_pos
;
675 if (slot
->in_use
&& !data_received
) {
680 select_timeout
.tv_sec
= 0;
681 select_timeout
.tv_usec
= 50000;
682 select(max_fd
, &readfds
, &writefds
,
683 &excfds
, &select_timeout
);
687 while (slot
->in_use
) {
688 slot
->curl_result
= curl_easy_perform(slot
->curl
);
689 finish_active_slot(slot
);
694 static void closedown_active_slot(struct active_request_slot
*slot
)
700 static void release_active_slot(struct active_request_slot
*slot
)
702 closedown_active_slot(slot
);
703 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
704 #ifdef USE_CURL_MULTI
705 curl_multi_remove_handle(curlm
, slot
->curl
);
707 curl_easy_cleanup(slot
->curl
);
709 curl_session_count
--;
711 #ifdef USE_CURL_MULTI
716 void finish_active_slot(struct active_request_slot
*slot
)
718 closedown_active_slot(slot
);
719 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CODE
, &slot
->http_code
);
721 if (slot
->finished
!= NULL
)
722 (*slot
->finished
) = 1;
724 /* Store slot results so they can be read after the slot is reused */
725 if (slot
->results
!= NULL
) {
726 slot
->results
->curl_result
= slot
->curl_result
;
727 slot
->results
->http_code
= slot
->http_code
;
730 /* Run callback if appropriate */
731 if (slot
->callback_func
!= NULL
)
732 slot
->callback_func(slot
->callback_data
);
735 void finish_all_active_slots(void)
737 struct active_request_slot
*slot
= active_queue_head
;
741 run_active_slot(slot
);
742 slot
= active_queue_head
;
748 /* Helpers for modifying and creating URLs */
749 static inline int needs_quote(int ch
)
751 if (((ch
>= 'A') && (ch
<= 'Z'))
752 || ((ch
>= 'a') && (ch
<= 'z'))
753 || ((ch
>= '0') && (ch
<= '9'))
761 static inline int hex(int v
)
769 static char *quote_ref_url(const char *base
, const char *ref
)
771 struct strbuf buf
= STRBUF_INIT
;
775 end_url_with_slash(&buf
, base
);
777 for (cp
= ref
; (ch
= *cp
) != 0; cp
++)
779 strbuf_addf(&buf
, "%%%02x", ch
);
781 strbuf_addch(&buf
, *cp
);
783 return strbuf_detach(&buf
, NULL
);
786 void append_remote_object_url(struct strbuf
*buf
, const char *url
,
788 int only_two_digit_prefix
)
790 end_url_with_slash(buf
, url
);
792 strbuf_addf(buf
, "objects/%.*s/", 2, hex
);
793 if (!only_two_digit_prefix
)
794 strbuf_addf(buf
, "%s", hex
+2);
797 char *get_remote_object_url(const char *url
, const char *hex
,
798 int only_two_digit_prefix
)
800 struct strbuf buf
= STRBUF_INIT
;
801 append_remote_object_url(&buf
, url
, hex
, only_two_digit_prefix
);
802 return strbuf_detach(&buf
, NULL
);
805 /* http_request() targets */
806 #define HTTP_REQUEST_STRBUF 0
807 #define HTTP_REQUEST_FILE 1
809 static int http_request(const char *url
, void *result
, int target
, int options
)
811 struct active_request_slot
*slot
;
812 struct slot_results results
;
813 struct curl_slist
*headers
= NULL
;
814 struct strbuf buf
= STRBUF_INIT
;
817 slot
= get_active_slot();
818 slot
->results
= &results
;
819 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
821 if (result
== NULL
) {
822 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 1);
824 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
825 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, result
);
827 if (target
== HTTP_REQUEST_FILE
) {
828 long posn
= ftell(result
);
829 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
832 strbuf_addf(&buf
, "Range: bytes=%ld-", posn
);
833 headers
= curl_slist_append(headers
, buf
.buf
);
836 slot
->local
= result
;
838 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
842 strbuf_addstr(&buf
, "Pragma:");
843 if (options
& HTTP_NO_CACHE
)
844 strbuf_addstr(&buf
, " no-cache");
846 headers
= curl_slist_append(headers
, buf
.buf
);
848 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, url
);
849 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
851 if (start_active_slot(slot
)) {
852 run_active_slot(slot
);
853 if (results
.curl_result
== CURLE_OK
)
855 else if (missing_target(&results
))
856 ret
= HTTP_MISSING_TARGET
;
857 else if (results
.http_code
== 401) {
862 * git_getpass is needed here because its very likely stdin/stdout are
863 * pipes to our parent process. So we instead need to use /dev/tty,
864 * but that is non-portable. Using git_getpass() can at least be stubbed
865 * on other platforms with a different implementation if/when necessary.
867 user_name
= xstrdup(git_getpass("Username: "));
868 init_curl_http_auth(slot
->curl
);
874 error("Unable to start HTTP request for %s", url
);
875 ret
= HTTP_START_FAILED
;
879 curl_slist_free_all(headers
);
880 strbuf_release(&buf
);
885 int http_get_strbuf(const char *url
, struct strbuf
*result
, int options
)
887 int http_ret
= http_request(url
, result
, HTTP_REQUEST_STRBUF
, options
);
888 if (http_ret
== HTTP_REAUTH
) {
889 http_ret
= http_request(url
, result
, HTTP_REQUEST_STRBUF
, options
);
895 * Downloads an url and stores the result in the given file.
897 * If a previous interrupted download is detected (i.e. a previous temporary
898 * file is still around) the download is resumed.
900 static int http_get_file(const char *url
, const char *filename
, int options
)
903 struct strbuf tmpfile
= STRBUF_INIT
;
906 strbuf_addf(&tmpfile
, "%s.temp", filename
);
907 result
= fopen(tmpfile
.buf
, "a");
909 error("Unable to open local file %s", tmpfile
.buf
);
914 ret
= http_request(url
, result
, HTTP_REQUEST_FILE
, options
);
917 if ((ret
== HTTP_OK
) && move_temp_to_file(tmpfile
.buf
, filename
))
920 strbuf_release(&tmpfile
);
924 int http_error(const char *url
, int ret
)
926 /* http_request has already handled HTTP_START_FAILED. */
927 if (ret
!= HTTP_START_FAILED
)
928 error("%s while accessing %s\n", curl_errorstr
, url
);
933 int http_fetch_ref(const char *base
, struct ref
*ref
)
936 struct strbuf buffer
= STRBUF_INIT
;
939 url
= quote_ref_url(base
, ref
->name
);
940 if (http_get_strbuf(url
, &buffer
, HTTP_NO_CACHE
) == HTTP_OK
) {
941 strbuf_rtrim(&buffer
);
942 if (buffer
.len
== 40)
943 ret
= get_sha1_hex(buffer
.buf
, ref
->old_sha1
);
944 else if (!prefixcmp(buffer
.buf
, "ref: ")) {
945 ref
->symref
= xstrdup(buffer
.buf
+ 5);
950 strbuf_release(&buffer
);
955 /* Helpers for fetching packs */
956 static char *fetch_pack_index(unsigned char *sha1
, const char *base_url
)
959 struct strbuf buf
= STRBUF_INIT
;
962 fprintf(stderr
, "Getting index for pack %s\n", sha1_to_hex(sha1
));
964 end_url_with_slash(&buf
, base_url
);
965 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", sha1_to_hex(sha1
));
966 url
= strbuf_detach(&buf
, NULL
);
968 strbuf_addf(&buf
, "%s.temp", sha1_pack_index_name(sha1
));
969 tmp
= strbuf_detach(&buf
, NULL
);
971 if (http_get_file(url
, tmp
, 0) != HTTP_OK
) {
972 error("Unable to get pack index %s\n", url
);
981 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
982 unsigned char *sha1
, const char *base_url
)
984 struct packed_git
*new_pack
;
985 char *tmp_idx
= NULL
;
988 if (has_pack_index(sha1
)) {
989 new_pack
= parse_pack_index(sha1
, NULL
);
991 return -1; /* parse_pack_index() already issued error message */
995 tmp_idx
= fetch_pack_index(sha1
, base_url
);
999 new_pack
= parse_pack_index(sha1
, tmp_idx
);
1004 return -1; /* parse_pack_index() already issued error message */
1007 ret
= verify_pack_index(new_pack
);
1009 close_pack_index(new_pack
);
1010 ret
= move_temp_to_file(tmp_idx
, sha1_pack_index_name(sha1
));
1017 new_pack
->next
= *packs_head
;
1018 *packs_head
= new_pack
;
1022 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
1026 struct strbuf buf
= STRBUF_INIT
;
1027 unsigned char sha1
[20];
1029 end_url_with_slash(&buf
, base_url
);
1030 strbuf_addstr(&buf
, "objects/info/packs");
1031 url
= strbuf_detach(&buf
, NULL
);
1033 ret
= http_get_strbuf(url
, &buf
, HTTP_NO_CACHE
);
1038 while (i
< buf
.len
) {
1042 if (i
+ 52 <= buf
.len
&&
1043 !prefixcmp(data
+ i
, " pack-") &&
1044 !prefixcmp(data
+ i
+ 46, ".pack\n")) {
1045 get_sha1_hex(data
+ i
+ 6, sha1
);
1046 fetch_and_setup_pack_index(packs_head
, sha1
,
1052 while (i
< buf
.len
&& data
[i
] != '\n')
1063 void release_http_pack_request(struct http_pack_request
*preq
)
1065 if (preq
->packfile
!= NULL
) {
1066 fclose(preq
->packfile
);
1067 preq
->packfile
= NULL
;
1068 preq
->slot
->local
= NULL
;
1070 if (preq
->range_header
!= NULL
) {
1071 curl_slist_free_all(preq
->range_header
);
1072 preq
->range_header
= NULL
;
1078 int finish_http_pack_request(struct http_pack_request
*preq
)
1080 struct packed_git
**lst
;
1081 struct packed_git
*p
= preq
->target
;
1083 struct child_process ip
;
1084 const char *ip_argv
[8];
1086 close_pack_index(p
);
1088 fclose(preq
->packfile
);
1089 preq
->packfile
= NULL
;
1090 preq
->slot
->local
= NULL
;
1094 lst
= &((*lst
)->next
);
1095 *lst
= (*lst
)->next
;
1097 tmp_idx
= xstrdup(preq
->tmpfile
);
1098 strcpy(tmp_idx
+ strlen(tmp_idx
) - strlen(".pack.temp"),
1101 ip_argv
[0] = "index-pack";
1103 ip_argv
[2] = tmp_idx
;
1104 ip_argv
[3] = preq
->tmpfile
;
1107 memset(&ip
, 0, sizeof(ip
));
1113 if (run_command(&ip
)) {
1114 unlink(preq
->tmpfile
);
1120 unlink(sha1_pack_index_name(p
->sha1
));
1122 if (move_temp_to_file(preq
->tmpfile
, sha1_pack_name(p
->sha1
))
1123 || move_temp_to_file(tmp_idx
, sha1_pack_index_name(p
->sha1
))) {
1128 install_packed_git(p
);
1133 struct http_pack_request
*new_http_pack_request(
1134 struct packed_git
*target
, const char *base_url
)
1137 char range
[RANGE_HEADER_SIZE
];
1138 struct strbuf buf
= STRBUF_INIT
;
1139 struct http_pack_request
*preq
;
1141 preq
= xmalloc(sizeof(*preq
));
1142 preq
->target
= target
;
1143 preq
->range_header
= NULL
;
1145 end_url_with_slash(&buf
, base_url
);
1146 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1147 sha1_to_hex(target
->sha1
));
1148 preq
->url
= strbuf_detach(&buf
, NULL
);
1150 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp",
1151 sha1_pack_name(target
->sha1
));
1152 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1153 if (!preq
->packfile
) {
1154 error("Unable to open local file %s for pack",
1159 preq
->slot
= get_active_slot();
1160 preq
->slot
->local
= preq
->packfile
;
1161 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1162 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1163 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1164 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1168 * If there is data present from a previous transfer attempt,
1169 * resume where it left off
1171 prev_posn
= ftell(preq
->packfile
);
1173 if (http_is_verbose
)
1175 "Resuming fetch of pack %s at byte %ld\n",
1176 sha1_to_hex(target
->sha1
), prev_posn
);
1177 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1178 preq
->range_header
= curl_slist_append(NULL
, range
);
1179 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1180 preq
->range_header
);
1191 /* Helpers for fetching objects (loose) */
1192 static size_t fwrite_sha1_file(char *ptr
, size_t eltsize
, size_t nmemb
,
1195 unsigned char expn
[4096];
1196 size_t size
= eltsize
* nmemb
;
1198 struct http_object_request
*freq
=
1199 (struct http_object_request
*)data
;
1201 ssize_t retval
= xwrite(freq
->localfile
,
1202 (char *) ptr
+ posn
, size
- posn
);
1206 } while (posn
< size
);
1208 freq
->stream
.avail_in
= size
;
1209 freq
->stream
.next_in
= (void *)ptr
;
1211 freq
->stream
.next_out
= expn
;
1212 freq
->stream
.avail_out
= sizeof(expn
);
1213 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1214 git_SHA1_Update(&freq
->c
, expn
,
1215 sizeof(expn
) - freq
->stream
.avail_out
);
1216 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1221 struct http_object_request
*new_http_object_request(const char *base_url
,
1222 unsigned char *sha1
)
1224 char *hex
= sha1_to_hex(sha1
);
1226 char prevfile
[PATH_MAX
];
1228 char prev_buf
[PREV_BUF_SIZE
];
1229 ssize_t prev_read
= 0;
1231 char range
[RANGE_HEADER_SIZE
];
1232 struct curl_slist
*range_header
= NULL
;
1233 struct http_object_request
*freq
;
1235 freq
= xmalloc(sizeof(*freq
));
1236 hashcpy(freq
->sha1
, sha1
);
1237 freq
->localfile
= -1;
1239 filename
= sha1_file_name(sha1
);
1240 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1241 "%s.temp", filename
);
1243 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1244 unlink_or_warn(prevfile
);
1245 rename(freq
->tmpfile
, prevfile
);
1246 unlink_or_warn(freq
->tmpfile
);
1248 if (freq
->localfile
!= -1)
1249 error("fd leakage in start: %d", freq
->localfile
);
1250 freq
->localfile
= open(freq
->tmpfile
,
1251 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1253 * This could have failed due to the "lazy directory creation";
1254 * try to mkdir the last path component.
1256 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1257 char *dir
= strrchr(freq
->tmpfile
, '/');
1260 mkdir(freq
->tmpfile
, 0777);
1263 freq
->localfile
= open(freq
->tmpfile
,
1264 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1267 if (freq
->localfile
< 0) {
1268 error("Couldn't create temporary file %s: %s",
1269 freq
->tmpfile
, strerror(errno
));
1273 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1275 git_inflate_init(&freq
->stream
);
1277 git_SHA1_Init(&freq
->c
);
1279 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1282 * If a previous temp file is present, process what was already
1285 prevlocal
= open(prevfile
, O_RDONLY
);
1286 if (prevlocal
!= -1) {
1288 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1290 if (fwrite_sha1_file(prev_buf
,
1293 freq
) == prev_read
) {
1294 prev_posn
+= prev_read
;
1299 } while (prev_read
> 0);
1302 unlink_or_warn(prevfile
);
1305 * Reset inflate/SHA1 if there was an error reading the previous temp
1306 * file; also rewind to the beginning of the local file.
1308 if (prev_read
== -1) {
1309 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1310 git_inflate_init(&freq
->stream
);
1311 git_SHA1_Init(&freq
->c
);
1314 lseek(freq
->localfile
, 0, SEEK_SET
);
1315 if (ftruncate(freq
->localfile
, 0) < 0) {
1316 error("Couldn't truncate temporary file %s: %s",
1317 freq
->tmpfile
, strerror(errno
));
1323 freq
->slot
= get_active_slot();
1325 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1326 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1327 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1328 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1329 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1332 * If we have successfully processed data from a previous fetch
1333 * attempt, only fetch the data we don't already have.
1336 if (http_is_verbose
)
1338 "Resuming fetch of object %s at byte %ld\n",
1340 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1341 range_header
= curl_slist_append(range_header
, range
);
1342 curl_easy_setopt(freq
->slot
->curl
,
1343 CURLOPT_HTTPHEADER
, range_header
);
1355 void process_http_object_request(struct http_object_request
*freq
)
1357 if (freq
->slot
== NULL
)
1359 freq
->curl_result
= freq
->slot
->curl_result
;
1360 freq
->http_code
= freq
->slot
->http_code
;
1364 int finish_http_object_request(struct http_object_request
*freq
)
1368 close(freq
->localfile
);
1369 freq
->localfile
= -1;
1371 process_http_object_request(freq
);
1373 if (freq
->http_code
== 416) {
1374 warning("requested range invalid; we may already have all the data.");
1375 } else if (freq
->curl_result
!= CURLE_OK
) {
1376 if (stat(freq
->tmpfile
, &st
) == 0)
1377 if (st
.st_size
== 0)
1378 unlink_or_warn(freq
->tmpfile
);
1382 git_inflate_end(&freq
->stream
);
1383 git_SHA1_Final(freq
->real_sha1
, &freq
->c
);
1384 if (freq
->zret
!= Z_STREAM_END
) {
1385 unlink_or_warn(freq
->tmpfile
);
1388 if (hashcmp(freq
->sha1
, freq
->real_sha1
)) {
1389 unlink_or_warn(freq
->tmpfile
);
1393 move_temp_to_file(freq
->tmpfile
, sha1_file_name(freq
->sha1
));
1395 return freq
->rename
;
1398 void abort_http_object_request(struct http_object_request
*freq
)
1400 unlink_or_warn(freq
->tmpfile
);
1402 release_http_object_request(freq
);
1405 void release_http_object_request(struct http_object_request
*freq
)
1407 if (freq
->localfile
!= -1) {
1408 close(freq
->localfile
);
1409 freq
->localfile
= -1;
1411 if (freq
->url
!= NULL
) {
1415 if (freq
->slot
!= NULL
) {
1416 freq
->slot
->callback_func
= NULL
;
1417 freq
->slot
->callback_data
= NULL
;
1418 release_active_slot(freq
->slot
);