1 #include "git-compat-util.h"
5 #include "run-command.h"
8 #include "credential.h"
12 #include "transport.h"
16 size_t http_post_buffer
= 16 * LARGE_PACKET_MAX
;
18 #if LIBCURL_VERSION_NUM >= 0x070a06
19 #define LIBCURL_CAN_HANDLE_AUTH_ANY
22 static int min_curl_sessions
= 1;
23 static int curl_session_count
;
25 static int max_requests
= -1;
28 #ifndef NO_CURL_EASY_DUPHANDLE
29 static CURL
*curl_default
;
32 #define PREV_BUF_SIZE 4096
33 #define RANGE_HEADER_SIZE 30
35 char curl_errorstr
[CURL_ERROR_SIZE
];
37 static int curl_ssl_verify
= -1;
38 static int curl_ssl_try
;
39 static const char *ssl_cert
;
40 #if LIBCURL_VERSION_NUM >= 0x070903
41 static const char *ssl_key
;
43 #if LIBCURL_VERSION_NUM >= 0x070908
44 static const char *ssl_capath
;
46 static const char *ssl_cainfo
;
47 static long curl_low_speed_limit
= -1;
48 static long curl_low_speed_time
= -1;
49 static int curl_ftp_no_epsv
;
50 static const char *curl_http_proxy
;
51 static const char *curl_cookie_file
;
52 static int curl_save_cookies
;
53 struct credential http_auth
= CREDENTIAL_INIT
;
54 static int http_proactive_auth
;
55 static const char *user_agent
;
57 #if LIBCURL_VERSION_NUM >= 0x071700
58 /* Use CURLOPT_KEYPASSWD as is */
59 #elif LIBCURL_VERSION_NUM >= 0x070903
60 #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
62 #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
65 static struct credential cert_auth
= CREDENTIAL_INIT
;
66 static int ssl_cert_password_required
;
67 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
68 static unsigned long http_auth_methods
= CURLAUTH_ANY
;
71 static struct curl_slist
*pragma_header
;
72 static struct curl_slist
*no_pragma_header
;
74 static struct active_request_slot
*active_queue_head
;
76 static char *cached_accept_language
;
78 size_t fread_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
80 size_t size
= eltsize
* nmemb
;
81 struct buffer
*buffer
= buffer_
;
83 if (size
> buffer
->buf
.len
- buffer
->posn
)
84 size
= buffer
->buf
.len
- buffer
->posn
;
85 memcpy(ptr
, buffer
->buf
.buf
+ buffer
->posn
, size
);
92 curlioerr
ioctl_buffer(CURL
*handle
, int cmd
, void *clientp
)
94 struct buffer
*buffer
= clientp
;
100 case CURLIOCMD_RESTARTREAD
:
105 return CURLIOE_UNKNOWNCMD
;
110 size_t fwrite_buffer(char *ptr
, size_t eltsize
, size_t nmemb
, void *buffer_
)
112 size_t size
= eltsize
* nmemb
;
113 struct strbuf
*buffer
= buffer_
;
115 strbuf_add(buffer
, ptr
, size
);
119 size_t fwrite_null(char *ptr
, size_t eltsize
, size_t nmemb
, void *strbuf
)
121 return eltsize
* nmemb
;
124 static void closedown_active_slot(struct active_request_slot
*slot
)
130 static void finish_active_slot(struct active_request_slot
*slot
)
132 closedown_active_slot(slot
);
133 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTP_CODE
, &slot
->http_code
);
135 if (slot
->finished
!= NULL
)
136 (*slot
->finished
) = 1;
138 /* Store slot results so they can be read after the slot is reused */
139 if (slot
->results
!= NULL
) {
140 slot
->results
->curl_result
= slot
->curl_result
;
141 slot
->results
->http_code
= slot
->http_code
;
142 #if LIBCURL_VERSION_NUM >= 0x070a08
143 curl_easy_getinfo(slot
->curl
, CURLINFO_HTTPAUTH_AVAIL
,
144 &slot
->results
->auth_avail
);
146 slot
->results
->auth_avail
= 0;
150 /* Run callback if appropriate */
151 if (slot
->callback_func
!= NULL
)
152 slot
->callback_func(slot
->callback_data
);
155 #ifdef USE_CURL_MULTI
156 static void process_curl_messages(void)
159 struct active_request_slot
*slot
;
160 CURLMsg
*curl_message
= curl_multi_info_read(curlm
, &num_messages
);
162 while (curl_message
!= NULL
) {
163 if (curl_message
->msg
== CURLMSG_DONE
) {
164 int curl_result
= curl_message
->data
.result
;
165 slot
= active_queue_head
;
166 while (slot
!= NULL
&&
167 slot
->curl
!= curl_message
->easy_handle
)
170 curl_multi_remove_handle(curlm
, slot
->curl
);
171 slot
->curl_result
= curl_result
;
172 finish_active_slot(slot
);
174 fprintf(stderr
, "Received DONE message for unknown request!\n");
177 fprintf(stderr
, "Unknown CURL message received: %d\n",
178 (int)curl_message
->msg
);
180 curl_message
= curl_multi_info_read(curlm
, &num_messages
);
185 static int http_options(const char *var
, const char *value
, void *cb
)
187 if (!strcmp("http.sslverify", var
)) {
188 curl_ssl_verify
= git_config_bool(var
, value
);
191 if (!strcmp("http.sslcert", var
))
192 return git_config_string(&ssl_cert
, var
, value
);
193 #if LIBCURL_VERSION_NUM >= 0x070903
194 if (!strcmp("http.sslkey", var
))
195 return git_config_string(&ssl_key
, var
, value
);
197 #if LIBCURL_VERSION_NUM >= 0x070908
198 if (!strcmp("http.sslcapath", var
))
199 return git_config_string(&ssl_capath
, var
, value
);
201 if (!strcmp("http.sslcainfo", var
))
202 return git_config_string(&ssl_cainfo
, var
, value
);
203 if (!strcmp("http.sslcertpasswordprotected", var
)) {
204 ssl_cert_password_required
= git_config_bool(var
, value
);
207 if (!strcmp("http.ssltry", var
)) {
208 curl_ssl_try
= git_config_bool(var
, value
);
211 if (!strcmp("http.minsessions", var
)) {
212 min_curl_sessions
= git_config_int(var
, value
);
213 #ifndef USE_CURL_MULTI
214 if (min_curl_sessions
> 1)
215 min_curl_sessions
= 1;
219 #ifdef USE_CURL_MULTI
220 if (!strcmp("http.maxrequests", var
)) {
221 max_requests
= git_config_int(var
, value
);
225 if (!strcmp("http.lowspeedlimit", var
)) {
226 curl_low_speed_limit
= (long)git_config_int(var
, value
);
229 if (!strcmp("http.lowspeedtime", var
)) {
230 curl_low_speed_time
= (long)git_config_int(var
, value
);
234 if (!strcmp("http.noepsv", var
)) {
235 curl_ftp_no_epsv
= git_config_bool(var
, value
);
238 if (!strcmp("http.proxy", var
))
239 return git_config_string(&curl_http_proxy
, var
, value
);
241 if (!strcmp("http.cookiefile", var
))
242 return git_config_string(&curl_cookie_file
, var
, value
);
243 if (!strcmp("http.savecookies", var
)) {
244 curl_save_cookies
= git_config_bool(var
, value
);
248 if (!strcmp("http.postbuffer", var
)) {
249 http_post_buffer
= git_config_int(var
, value
);
250 if (http_post_buffer
< LARGE_PACKET_MAX
)
251 http_post_buffer
= LARGE_PACKET_MAX
;
255 if (!strcmp("http.useragent", var
))
256 return git_config_string(&user_agent
, var
, value
);
258 /* Fall back on the default ones */
259 return git_default_config(var
, value
, cb
);
262 static void init_curl_http_auth(CURL
*result
)
264 if (!http_auth
.username
)
267 credential_fill(&http_auth
);
269 #if LIBCURL_VERSION_NUM >= 0x071301
270 curl_easy_setopt(result
, CURLOPT_USERNAME
, http_auth
.username
);
271 curl_easy_setopt(result
, CURLOPT_PASSWORD
, http_auth
.password
);
274 static struct strbuf up
= STRBUF_INIT
;
276 * Note that we assume we only ever have a single set of
277 * credentials in a given program run, so we do not have
278 * to worry about updating this buffer, only setting its
282 strbuf_addf(&up
, "%s:%s",
283 http_auth
.username
, http_auth
.password
);
284 curl_easy_setopt(result
, CURLOPT_USERPWD
, up
.buf
);
289 static int has_cert_password(void)
291 if (ssl_cert
== NULL
|| ssl_cert_password_required
!= 1)
293 if (!cert_auth
.password
) {
294 cert_auth
.protocol
= xstrdup("cert");
295 cert_auth
.username
= xstrdup("");
296 cert_auth
.path
= xstrdup(ssl_cert
);
297 credential_fill(&cert_auth
);
302 #if LIBCURL_VERSION_NUM >= 0x071900
303 static void set_curl_keepalive(CURL
*c
)
305 curl_easy_setopt(c
, CURLOPT_TCP_KEEPALIVE
, 1);
308 #elif LIBCURL_VERSION_NUM >= 0x071000
309 static int sockopt_callback(void *client
, curl_socket_t fd
, curlsocktype type
)
313 socklen_t len
= (socklen_t
)sizeof(ka
);
315 if (type
!= CURLSOCKTYPE_IPCXN
)
318 rc
= setsockopt(fd
, SOL_SOCKET
, SO_KEEPALIVE
, (void *)&ka
, len
);
320 warning("unable to set SO_KEEPALIVE on socket %s",
323 return 0; /* CURL_SOCKOPT_OK only exists since curl 7.21.5 */
326 static void set_curl_keepalive(CURL
*c
)
328 curl_easy_setopt(c
, CURLOPT_SOCKOPTFUNCTION
, sockopt_callback
);
332 static void set_curl_keepalive(CURL
*c
)
334 /* not supported on older curl versions */
338 static CURL
*get_curl_handle(void)
340 CURL
*result
= curl_easy_init();
341 long allowed_protocols
= 0;
344 die("curl_easy_init failed");
346 if (!curl_ssl_verify
) {
347 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 0);
348 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 0);
350 /* Verify authenticity of the peer's certificate */
351 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYPEER
, 1);
352 /* The name in the cert must match whom we tried to connect */
353 curl_easy_setopt(result
, CURLOPT_SSL_VERIFYHOST
, 2);
356 #if LIBCURL_VERSION_NUM >= 0x070907
357 curl_easy_setopt(result
, CURLOPT_NETRC
, CURL_NETRC_OPTIONAL
);
359 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
360 curl_easy_setopt(result
, CURLOPT_HTTPAUTH
, CURLAUTH_ANY
);
363 if (http_proactive_auth
)
364 init_curl_http_auth(result
);
366 if (ssl_cert
!= NULL
)
367 curl_easy_setopt(result
, CURLOPT_SSLCERT
, ssl_cert
);
368 if (has_cert_password())
369 curl_easy_setopt(result
, CURLOPT_KEYPASSWD
, cert_auth
.password
);
370 #if LIBCURL_VERSION_NUM >= 0x070903
372 curl_easy_setopt(result
, CURLOPT_SSLKEY
, ssl_key
);
374 #if LIBCURL_VERSION_NUM >= 0x070908
375 if (ssl_capath
!= NULL
)
376 curl_easy_setopt(result
, CURLOPT_CAPATH
, ssl_capath
);
378 if (ssl_cainfo
!= NULL
)
379 curl_easy_setopt(result
, CURLOPT_CAINFO
, ssl_cainfo
);
381 if (curl_low_speed_limit
> 0 && curl_low_speed_time
> 0) {
382 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_LIMIT
,
383 curl_low_speed_limit
);
384 curl_easy_setopt(result
, CURLOPT_LOW_SPEED_TIME
,
385 curl_low_speed_time
);
388 curl_easy_setopt(result
, CURLOPT_FOLLOWLOCATION
, 1);
389 curl_easy_setopt(result
, CURLOPT_MAXREDIRS
, 20);
390 #if LIBCURL_VERSION_NUM >= 0x071301
391 curl_easy_setopt(result
, CURLOPT_POSTREDIR
, CURL_REDIR_POST_ALL
);
392 #elif LIBCURL_VERSION_NUM >= 0x071101
393 curl_easy_setopt(result
, CURLOPT_POST301
, 1);
395 #if LIBCURL_VERSION_NUM >= 0x071304
396 if (is_transport_allowed("http"))
397 allowed_protocols
|= CURLPROTO_HTTP
;
398 if (is_transport_allowed("https"))
399 allowed_protocols
|= CURLPROTO_HTTPS
;
400 if (is_transport_allowed("ftp"))
401 allowed_protocols
|= CURLPROTO_FTP
;
402 if (is_transport_allowed("ftps"))
403 allowed_protocols
|= CURLPROTO_FTPS
;
404 curl_easy_setopt(result
, CURLOPT_REDIR_PROTOCOLS
, allowed_protocols
);
406 if (transport_restrict_protocols())
407 warning("protocol restrictions not applied to curl redirects because\n"
408 "your curl version is too old (>= 7.19.4)");
411 if (getenv("GIT_CURL_VERBOSE"))
412 curl_easy_setopt(result
, CURLOPT_VERBOSE
, 1);
414 curl_easy_setopt(result
, CURLOPT_USERAGENT
,
415 user_agent
? user_agent
: git_user_agent());
417 if (curl_ftp_no_epsv
)
418 curl_easy_setopt(result
, CURLOPT_FTP_USE_EPSV
, 0);
420 #ifdef CURLOPT_USE_SSL
422 curl_easy_setopt(result
, CURLOPT_USE_SSL
, CURLUSESSL_TRY
);
425 if (curl_http_proxy
) {
426 curl_easy_setopt(result
, CURLOPT_PROXY
, curl_http_proxy
);
427 #if LIBCURL_VERSION_NUM >= 0x071800
428 if (starts_with(curl_http_proxy
, "socks5"))
429 curl_easy_setopt(result
,
430 CURLOPT_PROXYTYPE
, CURLPROXY_SOCKS5
);
431 else if (starts_with(curl_http_proxy
, "socks4a"))
432 curl_easy_setopt(result
,
433 CURLOPT_PROXYTYPE
, CURLPROXY_SOCKS4A
);
434 else if (starts_with(curl_http_proxy
, "socks"))
435 curl_easy_setopt(result
,
436 CURLOPT_PROXYTYPE
, CURLPROXY_SOCKS4
);
439 #if LIBCURL_VERSION_NUM >= 0x070a07
440 curl_easy_setopt(result
, CURLOPT_PROXYAUTH
, CURLAUTH_ANY
);
443 set_curl_keepalive(result
);
448 static void set_from_env(const char **var
, const char *envname
)
450 const char *val
= getenv(envname
);
455 void http_init(struct remote
*remote
, const char *url
, int proactive_auth
)
457 char *low_speed_limit
;
458 char *low_speed_time
;
459 char *normalized_url
;
460 struct urlmatch_config config
= { STRING_LIST_INIT_DUP
};
462 config
.section
= "http";
464 config
.collect_fn
= http_options
;
465 config
.cascade_fn
= git_default_config
;
469 normalized_url
= url_normalize(url
, &config
.url
);
471 git_config(urlmatch_config_entry
, &config
);
472 free(normalized_url
);
474 if (curl_global_init(CURL_GLOBAL_ALL
) != CURLE_OK
)
475 die("curl_global_init failed");
477 http_proactive_auth
= proactive_auth
;
479 if (remote
&& remote
->http_proxy
)
480 curl_http_proxy
= xstrdup(remote
->http_proxy
);
482 pragma_header
= curl_slist_append(pragma_header
, "Pragma: no-cache");
483 no_pragma_header
= curl_slist_append(no_pragma_header
, "Pragma:");
485 #ifdef USE_CURL_MULTI
487 char *http_max_requests
= getenv("GIT_HTTP_MAX_REQUESTS");
488 if (http_max_requests
!= NULL
)
489 max_requests
= atoi(http_max_requests
);
492 curlm
= curl_multi_init();
494 die("curl_multi_init failed");
497 if (getenv("GIT_SSL_NO_VERIFY"))
500 set_from_env(&ssl_cert
, "GIT_SSL_CERT");
501 #if LIBCURL_VERSION_NUM >= 0x070903
502 set_from_env(&ssl_key
, "GIT_SSL_KEY");
504 #if LIBCURL_VERSION_NUM >= 0x070908
505 set_from_env(&ssl_capath
, "GIT_SSL_CAPATH");
507 set_from_env(&ssl_cainfo
, "GIT_SSL_CAINFO");
509 set_from_env(&user_agent
, "GIT_HTTP_USER_AGENT");
511 low_speed_limit
= getenv("GIT_HTTP_LOW_SPEED_LIMIT");
512 if (low_speed_limit
!= NULL
)
513 curl_low_speed_limit
= strtol(low_speed_limit
, NULL
, 10);
514 low_speed_time
= getenv("GIT_HTTP_LOW_SPEED_TIME");
515 if (low_speed_time
!= NULL
)
516 curl_low_speed_time
= strtol(low_speed_time
, NULL
, 10);
518 if (curl_ssl_verify
== -1)
521 curl_session_count
= 0;
522 #ifdef USE_CURL_MULTI
523 if (max_requests
< 1)
524 max_requests
= DEFAULT_MAX_REQUESTS
;
527 if (getenv("GIT_CURL_FTP_NO_EPSV"))
528 curl_ftp_no_epsv
= 1;
531 credential_from_url(&http_auth
, url
);
532 if (!ssl_cert_password_required
&&
533 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
534 starts_with(url
, "https://"))
535 ssl_cert_password_required
= 1;
538 #ifndef NO_CURL_EASY_DUPHANDLE
539 curl_default
= get_curl_handle();
543 void http_cleanup(void)
545 struct active_request_slot
*slot
= active_queue_head
;
547 while (slot
!= NULL
) {
548 struct active_request_slot
*next
= slot
->next
;
549 if (slot
->curl
!= NULL
) {
550 #ifdef USE_CURL_MULTI
551 curl_multi_remove_handle(curlm
, slot
->curl
);
553 curl_easy_cleanup(slot
->curl
);
558 active_queue_head
= NULL
;
560 #ifndef NO_CURL_EASY_DUPHANDLE
561 curl_easy_cleanup(curl_default
);
564 #ifdef USE_CURL_MULTI
565 curl_multi_cleanup(curlm
);
567 curl_global_cleanup();
569 curl_slist_free_all(pragma_header
);
570 pragma_header
= NULL
;
572 curl_slist_free_all(no_pragma_header
);
573 no_pragma_header
= NULL
;
575 if (curl_http_proxy
) {
576 free((void *)curl_http_proxy
);
577 curl_http_proxy
= NULL
;
580 if (cert_auth
.password
!= NULL
) {
581 memset(cert_auth
.password
, 0, strlen(cert_auth
.password
));
582 free(cert_auth
.password
);
583 cert_auth
.password
= NULL
;
585 ssl_cert_password_required
= 0;
587 free(cached_accept_language
);
588 cached_accept_language
= NULL
;
591 struct active_request_slot
*get_active_slot(void)
593 struct active_request_slot
*slot
= active_queue_head
;
594 struct active_request_slot
*newslot
;
596 #ifdef USE_CURL_MULTI
599 /* Wait for a slot to open up if the queue is full */
600 while (active_requests
>= max_requests
) {
601 curl_multi_perform(curlm
, &num_transfers
);
602 if (num_transfers
< active_requests
)
603 process_curl_messages();
607 while (slot
!= NULL
&& slot
->in_use
)
611 newslot
= xmalloc(sizeof(*newslot
));
612 newslot
->curl
= NULL
;
614 newslot
->next
= NULL
;
616 slot
= active_queue_head
;
618 active_queue_head
= newslot
;
620 while (slot
->next
!= NULL
)
622 slot
->next
= newslot
;
627 if (slot
->curl
== NULL
) {
628 #ifdef NO_CURL_EASY_DUPHANDLE
629 slot
->curl
= get_curl_handle();
631 slot
->curl
= curl_easy_duphandle(curl_default
);
633 curl_session_count
++;
638 slot
->results
= NULL
;
639 slot
->finished
= NULL
;
640 slot
->callback_data
= NULL
;
641 slot
->callback_func
= NULL
;
642 curl_easy_setopt(slot
->curl
, CURLOPT_COOKIEFILE
, curl_cookie_file
);
643 if (curl_save_cookies
)
644 curl_easy_setopt(slot
->curl
, CURLOPT_COOKIEJAR
, curl_cookie_file
);
645 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, pragma_header
);
646 curl_easy_setopt(slot
->curl
, CURLOPT_ERRORBUFFER
, curl_errorstr
);
647 curl_easy_setopt(slot
->curl
, CURLOPT_CUSTOMREQUEST
, NULL
);
648 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, NULL
);
649 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, NULL
);
650 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, NULL
);
651 curl_easy_setopt(slot
->curl
, CURLOPT_UPLOAD
, 0);
652 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
653 curl_easy_setopt(slot
->curl
, CURLOPT_FAILONERROR
, 1);
654 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
655 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPAUTH
, http_auth_methods
);
657 if (http_auth
.password
)
658 init_curl_http_auth(slot
->curl
);
663 int start_active_slot(struct active_request_slot
*slot
)
665 #ifdef USE_CURL_MULTI
666 CURLMcode curlm_result
= curl_multi_add_handle(curlm
, slot
->curl
);
669 if (curlm_result
!= CURLM_OK
&&
670 curlm_result
!= CURLM_CALL_MULTI_PERFORM
) {
677 * We know there must be something to do, since we just added
680 curl_multi_perform(curlm
, &num_transfers
);
685 #ifdef USE_CURL_MULTI
689 struct fill_chain
*next
;
692 static struct fill_chain
*fill_cfg
;
694 void add_fill_function(void *data
, int (*fill
)(void *))
696 struct fill_chain
*new = xmalloc(sizeof(*new));
697 struct fill_chain
**linkp
= &fill_cfg
;
702 linkp
= &(*linkp
)->next
;
706 void fill_active_slots(void)
708 struct active_request_slot
*slot
= active_queue_head
;
710 while (active_requests
< max_requests
) {
711 struct fill_chain
*fill
;
712 for (fill
= fill_cfg
; fill
; fill
= fill
->next
)
713 if (fill
->fill(fill
->data
))
720 while (slot
!= NULL
) {
721 if (!slot
->in_use
&& slot
->curl
!= NULL
722 && curl_session_count
> min_curl_sessions
) {
723 curl_easy_cleanup(slot
->curl
);
725 curl_session_count
--;
731 void step_active_slots(void)
734 CURLMcode curlm_result
;
737 curlm_result
= curl_multi_perform(curlm
, &num_transfers
);
738 } while (curlm_result
== CURLM_CALL_MULTI_PERFORM
);
739 if (num_transfers
< active_requests
) {
740 process_curl_messages();
746 void run_active_slot(struct active_request_slot
*slot
)
748 #ifdef USE_CURL_MULTI
753 struct timeval select_timeout
;
756 slot
->finished
= &finished
;
761 #if LIBCURL_VERSION_NUM >= 0x070f04
763 curl_multi_timeout(curlm
, &curl_timeout
);
764 if (curl_timeout
== 0) {
766 } else if (curl_timeout
== -1) {
767 select_timeout
.tv_sec
= 0;
768 select_timeout
.tv_usec
= 50000;
770 select_timeout
.tv_sec
= curl_timeout
/ 1000;
771 select_timeout
.tv_usec
= (curl_timeout
% 1000) * 1000;
774 select_timeout
.tv_sec
= 0;
775 select_timeout
.tv_usec
= 50000;
782 curl_multi_fdset(curlm
, &readfds
, &writefds
, &excfds
, &max_fd
);
785 * It can happen that curl_multi_timeout returns a pathologically
786 * long timeout when curl_multi_fdset returns no file descriptors
787 * to read. See commit message for more details.
790 (select_timeout
.tv_sec
> 0 ||
791 select_timeout
.tv_usec
> 50000)) {
792 select_timeout
.tv_sec
= 0;
793 select_timeout
.tv_usec
= 50000;
796 select(max_fd
+1, &readfds
, &writefds
, &excfds
, &select_timeout
);
800 while (slot
->in_use
) {
801 slot
->curl_result
= curl_easy_perform(slot
->curl
);
802 finish_active_slot(slot
);
807 static void release_active_slot(struct active_request_slot
*slot
)
809 closedown_active_slot(slot
);
810 if (slot
->curl
&& curl_session_count
> min_curl_sessions
) {
811 #ifdef USE_CURL_MULTI
812 curl_multi_remove_handle(curlm
, slot
->curl
);
814 curl_easy_cleanup(slot
->curl
);
816 curl_session_count
--;
818 #ifdef USE_CURL_MULTI
823 void finish_all_active_slots(void)
825 struct active_request_slot
*slot
= active_queue_head
;
829 run_active_slot(slot
);
830 slot
= active_queue_head
;
836 /* Helpers for modifying and creating URLs */
837 static inline int needs_quote(int ch
)
839 if (((ch
>= 'A') && (ch
<= 'Z'))
840 || ((ch
>= 'a') && (ch
<= 'z'))
841 || ((ch
>= '0') && (ch
<= '9'))
849 static char *quote_ref_url(const char *base
, const char *ref
)
851 struct strbuf buf
= STRBUF_INIT
;
855 end_url_with_slash(&buf
, base
);
857 for (cp
= ref
; (ch
= *cp
) != 0; cp
++)
859 strbuf_addf(&buf
, "%%%02x", ch
);
861 strbuf_addch(&buf
, *cp
);
863 return strbuf_detach(&buf
, NULL
);
866 void append_remote_object_url(struct strbuf
*buf
, const char *url
,
868 int only_two_digit_prefix
)
870 end_url_with_slash(buf
, url
);
872 strbuf_addf(buf
, "objects/%.*s/", 2, hex
);
873 if (!only_two_digit_prefix
)
874 strbuf_addf(buf
, "%s", hex
+2);
877 char *get_remote_object_url(const char *url
, const char *hex
,
878 int only_two_digit_prefix
)
880 struct strbuf buf
= STRBUF_INIT
;
881 append_remote_object_url(&buf
, url
, hex
, only_two_digit_prefix
);
882 return strbuf_detach(&buf
, NULL
);
885 static int handle_curl_result(struct slot_results
*results
)
888 * If we see a failing http code with CURLE_OK, we have turned off
889 * FAILONERROR (to keep the server's custom error response), and should
890 * translate the code into failure here.
892 if (results
->curl_result
== CURLE_OK
&&
893 results
->http_code
>= 400) {
894 results
->curl_result
= CURLE_HTTP_RETURNED_ERROR
;
896 * Normally curl will already have put the "reason phrase"
897 * from the server into curl_errorstr; unfortunately without
898 * FAILONERROR it is lost, so we can give only the numeric
901 snprintf(curl_errorstr
, sizeof(curl_errorstr
),
902 "The requested URL returned error: %ld",
906 if (results
->curl_result
== CURLE_OK
) {
907 credential_approve(&http_auth
);
909 } else if (missing_target(results
))
910 return HTTP_MISSING_TARGET
;
911 else if (results
->http_code
== 401) {
912 if (http_auth
.username
&& http_auth
.password
) {
913 credential_reject(&http_auth
);
916 #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
917 http_auth_methods
&= ~CURLAUTH_GSSNEGOTIATE
;
922 #if LIBCURL_VERSION_NUM >= 0x070c00
923 if (!curl_errorstr
[0])
924 strlcpy(curl_errorstr
,
925 curl_easy_strerror(results
->curl_result
),
926 sizeof(curl_errorstr
));
932 int run_one_slot(struct active_request_slot
*slot
,
933 struct slot_results
*results
)
935 slot
->results
= results
;
936 if (!start_active_slot(slot
)) {
937 snprintf(curl_errorstr
, sizeof(curl_errorstr
),
938 "failed to start HTTP request");
939 return HTTP_START_FAILED
;
942 run_active_slot(slot
);
943 return handle_curl_result(results
);
946 static CURLcode
curlinfo_strbuf(CURL
*curl
, CURLINFO info
, struct strbuf
*buf
)
952 ret
= curl_easy_getinfo(curl
, info
, &ptr
);
954 strbuf_addstr(buf
, ptr
);
959 * Check for and extract a content-type parameter. "raw"
960 * should be positioned at the start of the potential
961 * parameter, with any whitespace already removed.
963 * "name" is the name of the parameter. The value is appended
966 static int extract_param(const char *raw
, const char *name
,
969 size_t len
= strlen(name
);
971 if (strncasecmp(raw
, name
, len
))
979 while (*raw
&& !isspace(*raw
) && *raw
!= ';')
980 strbuf_addch(out
, *raw
++);
985 * Extract a normalized version of the content type, with any
986 * spaces suppressed, all letters lowercased, and no trailing ";"
989 * Note that we will silently remove even invalid whitespace. For
990 * example, "text / plain" is specifically forbidden by RFC 2616,
991 * but "text/plain" is the only reasonable output, and this keeps
994 * If the "charset" argument is not NULL, store the value of any
995 * charset parameter there.
998 * "TEXT/PLAIN; charset=utf-8" -> "text/plain", "utf-8"
999 * "text / plain" -> "text/plain"
1001 static void extract_content_type(struct strbuf
*raw
, struct strbuf
*type
,
1002 struct strbuf
*charset
)
1007 strbuf_grow(type
, raw
->len
);
1008 for (p
= raw
->buf
; *p
; p
++) {
1015 strbuf_addch(type
, tolower(*p
));
1021 strbuf_reset(charset
);
1023 while (isspace(*p
) || *p
== ';')
1025 if (!extract_param(p
, "charset", charset
))
1027 while (*p
&& !isspace(*p
))
1031 if (!charset
->len
&& starts_with(type
->buf
, "text/"))
1032 strbuf_addstr(charset
, "ISO-8859-1");
1035 static void write_accept_language(struct strbuf
*buf
)
1038 * MAX_DECIMAL_PLACES must not be larger than 3. If it is larger than
1039 * that, q-value will be smaller than 0.001, the minimum q-value the
1040 * HTTP specification allows. See
1041 * http://tools.ietf.org/html/rfc7231#section-5.3.1 for q-value.
1043 const int MAX_DECIMAL_PLACES
= 3;
1044 const int MAX_LANGUAGE_TAGS
= 1000;
1045 const int MAX_ACCEPT_LANGUAGE_HEADER_SIZE
= 4000;
1046 char **language_tags
= NULL
;
1048 const char *s
= get_preferred_languages();
1050 struct strbuf tag
= STRBUF_INIT
;
1052 /* Don't add Accept-Language header if no language is preferred. */
1057 * Split the colon-separated string of preferred languages into
1058 * language_tags array.
1061 /* collect language tag */
1062 for (; *s
&& (isalnum(*s
) || *s
== '_'); s
++)
1063 strbuf_addch(&tag
, *s
== '_' ? '-' : *s
);
1065 /* skip .codeset, @modifier and any other unnecessary parts */
1066 while (*s
&& *s
!= ':')
1071 REALLOC_ARRAY(language_tags
, num_langs
);
1072 language_tags
[num_langs
- 1] = strbuf_detach(&tag
, NULL
);
1073 if (num_langs
>= MAX_LANGUAGE_TAGS
- 1) /* -1 for '*' */
1078 /* write Accept-Language header into buf */
1080 int last_buf_len
= 0;
1086 REALLOC_ARRAY(language_tags
, num_langs
+ 1);
1087 language_tags
[num_langs
++] = "*"; /* it's OK; this won't be freed */
1089 /* compute decimal_places */
1090 for (max_q
= 1, decimal_places
= 0;
1091 max_q
< num_langs
&& decimal_places
<= MAX_DECIMAL_PLACES
;
1092 decimal_places
++, max_q
*= 10)
1095 sprintf(q_format
, ";q=0.%%0%dd", decimal_places
);
1097 strbuf_addstr(buf
, "Accept-Language: ");
1099 for (i
= 0; i
< num_langs
; i
++) {
1101 strbuf_addstr(buf
, ", ");
1103 strbuf_addstr(buf
, language_tags
[i
]);
1106 strbuf_addf(buf
, q_format
, max_q
- i
);
1108 if (buf
->len
> MAX_ACCEPT_LANGUAGE_HEADER_SIZE
) {
1109 strbuf_remove(buf
, last_buf_len
, buf
->len
- last_buf_len
);
1113 last_buf_len
= buf
->len
;
1117 /* free language tags -- last one is a static '*' */
1118 for (i
= 0; i
< num_langs
- 1; i
++)
1119 free(language_tags
[i
]);
1120 free(language_tags
);
1124 * Get an Accept-Language header which indicates user's preferred languages.
1128 * LANGUAGE=ko:en -> "Accept-Language: ko, en; q=0.9, *; q=0.1"
1129 * LANGUAGE=ko_KR.UTF-8:sr@latin -> "Accept-Language: ko-KR, sr; q=0.9, *; q=0.1"
1130 * LANGUAGE=ko LANG=en_US.UTF-8 -> "Accept-Language: ko, *; q=0.1"
1131 * LANGUAGE= LANG=en_US.UTF-8 -> "Accept-Language: en-US, *; q=0.1"
1132 * LANGUAGE= LANG=C -> ""
1134 static const char *get_accept_language(void)
1136 if (!cached_accept_language
) {
1137 struct strbuf buf
= STRBUF_INIT
;
1138 write_accept_language(&buf
);
1140 cached_accept_language
= strbuf_detach(&buf
, NULL
);
1143 return cached_accept_language
;
1146 /* http_request() targets */
1147 #define HTTP_REQUEST_STRBUF 0
1148 #define HTTP_REQUEST_FILE 1
1150 static int http_request(const char *url
,
1151 void *result
, int target
,
1152 const struct http_get_options
*options
)
1154 struct active_request_slot
*slot
;
1155 struct slot_results results
;
1156 struct curl_slist
*headers
= NULL
;
1157 struct strbuf buf
= STRBUF_INIT
;
1158 const char *accept_language
;
1161 slot
= get_active_slot();
1162 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPGET
, 1);
1164 if (result
== NULL
) {
1165 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 1);
1167 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
1168 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, result
);
1170 if (target
== HTTP_REQUEST_FILE
) {
1171 long posn
= ftell(result
);
1172 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
1175 strbuf_addf(&buf
, "Range: bytes=%ld-", posn
);
1176 headers
= curl_slist_append(headers
, buf
.buf
);
1180 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
,
1184 accept_language
= get_accept_language();
1186 if (accept_language
)
1187 headers
= curl_slist_append(headers
, accept_language
);
1189 strbuf_addstr(&buf
, "Pragma:");
1190 if (options
&& options
->no_cache
)
1191 strbuf_addstr(&buf
, " no-cache");
1192 if (options
&& options
->keep_error
)
1193 curl_easy_setopt(slot
->curl
, CURLOPT_FAILONERROR
, 0);
1195 headers
= curl_slist_append(headers
, buf
.buf
);
1197 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, url
);
1198 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
1199 curl_easy_setopt(slot
->curl
, CURLOPT_ENCODING
, "gzip");
1201 ret
= run_one_slot(slot
, &results
);
1203 if (options
&& options
->content_type
) {
1204 struct strbuf raw
= STRBUF_INIT
;
1205 curlinfo_strbuf(slot
->curl
, CURLINFO_CONTENT_TYPE
, &raw
);
1206 extract_content_type(&raw
, options
->content_type
,
1208 strbuf_release(&raw
);
1211 if (options
&& options
->effective_url
)
1212 curlinfo_strbuf(slot
->curl
, CURLINFO_EFFECTIVE_URL
,
1213 options
->effective_url
);
1215 curl_slist_free_all(headers
);
1216 strbuf_release(&buf
);
1222 * Update the "base" url to a more appropriate value, as deduced by
1223 * redirects seen when requesting a URL starting with "url".
1225 * The "asked" parameter is a URL that we asked curl to access, and must begin
1228 * The "got" parameter is the URL that curl reported to us as where we ended
1231 * Returns 1 if we updated the base url, 0 otherwise.
1233 * Our basic strategy is to compare "base" and "asked" to find the bits
1234 * specific to our request. We then strip those bits off of "got" to yield the
1235 * new base. So for example, if our base is "http://example.com/foo.git",
1236 * and we ask for "http://example.com/foo.git/info/refs", we might end up
1237 * with "https://other.example.com/foo.git/info/refs". We would want the
1238 * new URL to become "https://other.example.com/foo.git".
1240 * Note that this assumes a sane redirect scheme. It's entirely possible
1241 * in the example above to end up at a URL that does not even end in
1242 * "info/refs". In such a case we simply punt, as there is not much we can
1243 * do (and such a scheme is unlikely to represent a real git repository,
1244 * which means we are likely about to abort anyway).
1246 static int update_url_from_redirect(struct strbuf
*base
,
1248 const struct strbuf
*got
)
1253 if (!strcmp(asked
, got
->buf
))
1256 if (!skip_prefix(asked
, base
->buf
, &tail
))
1257 die("BUG: update_url_from_redirect: %s is not a superset of %s",
1260 tail_len
= strlen(tail
);
1262 if (got
->len
< tail_len
||
1263 strcmp(tail
, got
->buf
+ got
->len
- tail_len
))
1264 return 0; /* insane redirect scheme */
1267 strbuf_add(base
, got
->buf
, got
->len
- tail_len
);
1271 static int http_request_reauth(const char *url
,
1272 void *result
, int target
,
1273 struct http_get_options
*options
)
1275 int ret
= http_request(url
, result
, target
, options
);
1277 if (options
&& options
->effective_url
&& options
->base_url
) {
1278 if (update_url_from_redirect(options
->base_url
,
1279 url
, options
->effective_url
)) {
1280 credential_from_url(&http_auth
, options
->base_url
->buf
);
1281 url
= options
->effective_url
->buf
;
1285 if (ret
!= HTTP_REAUTH
)
1289 * If we are using KEEP_ERROR, the previous request may have
1290 * put cruft into our output stream; we should clear it out before
1291 * making our next request. We only know how to do this for
1292 * the strbuf case, but that is enough to satisfy current callers.
1294 if (options
&& options
->keep_error
) {
1296 case HTTP_REQUEST_STRBUF
:
1297 strbuf_reset(result
);
1300 die("BUG: HTTP_KEEP_ERROR is only supported with strbufs");
1304 credential_fill(&http_auth
);
1306 return http_request(url
, result
, target
, options
);
1309 int http_get_strbuf(const char *url
,
1310 struct strbuf
*result
,
1311 struct http_get_options
*options
)
1313 return http_request_reauth(url
, result
, HTTP_REQUEST_STRBUF
, options
);
1317 * Downloads a URL and stores the result in the given file.
1319 * If a previous interrupted download is detected (i.e. a previous temporary
1320 * file is still around) the download is resumed.
1322 static int http_get_file(const char *url
, const char *filename
,
1323 struct http_get_options
*options
)
1326 struct strbuf tmpfile
= STRBUF_INIT
;
1329 strbuf_addf(&tmpfile
, "%s.temp", filename
);
1330 result
= fopen(tmpfile
.buf
, "a");
1332 error("Unable to open local file %s", tmpfile
.buf
);
1337 ret
= http_request_reauth(url
, result
, HTTP_REQUEST_FILE
, options
);
1340 if (ret
== HTTP_OK
&& move_temp_to_file(tmpfile
.buf
, filename
))
1343 strbuf_release(&tmpfile
);
1347 int http_fetch_ref(const char *base
, struct ref
*ref
)
1349 struct http_get_options options
= {0};
1351 struct strbuf buffer
= STRBUF_INIT
;
1354 options
.no_cache
= 1;
1356 url
= quote_ref_url(base
, ref
->name
);
1357 if (http_get_strbuf(url
, &buffer
, &options
) == HTTP_OK
) {
1358 strbuf_rtrim(&buffer
);
1359 if (buffer
.len
== 40)
1360 ret
= get_sha1_hex(buffer
.buf
, ref
->old_sha1
);
1361 else if (starts_with(buffer
.buf
, "ref: ")) {
1362 ref
->symref
= xstrdup(buffer
.buf
+ 5);
1367 strbuf_release(&buffer
);
1372 /* Helpers for fetching packs */
1373 static char *fetch_pack_index(unsigned char *sha1
, const char *base_url
)
1376 struct strbuf buf
= STRBUF_INIT
;
1378 if (http_is_verbose
)
1379 fprintf(stderr
, "Getting index for pack %s\n", sha1_to_hex(sha1
));
1381 end_url_with_slash(&buf
, base_url
);
1382 strbuf_addf(&buf
, "objects/pack/pack-%s.idx", sha1_to_hex(sha1
));
1383 url
= strbuf_detach(&buf
, NULL
);
1385 strbuf_addf(&buf
, "%s.temp", sha1_pack_index_name(sha1
));
1386 tmp
= strbuf_detach(&buf
, NULL
);
1388 if (http_get_file(url
, tmp
, NULL
) != HTTP_OK
) {
1389 error("Unable to get pack index %s", url
);
1398 static int fetch_and_setup_pack_index(struct packed_git
**packs_head
,
1399 unsigned char *sha1
, const char *base_url
)
1401 struct packed_git
*new_pack
;
1402 char *tmp_idx
= NULL
;
1405 if (has_pack_index(sha1
)) {
1406 new_pack
= parse_pack_index(sha1
, sha1_pack_index_name(sha1
));
1408 return -1; /* parse_pack_index() already issued error message */
1412 tmp_idx
= fetch_pack_index(sha1
, base_url
);
1416 new_pack
= parse_pack_index(sha1
, tmp_idx
);
1421 return -1; /* parse_pack_index() already issued error message */
1424 ret
= verify_pack_index(new_pack
);
1426 close_pack_index(new_pack
);
1427 ret
= move_temp_to_file(tmp_idx
, sha1_pack_index_name(sha1
));
1434 new_pack
->next
= *packs_head
;
1435 *packs_head
= new_pack
;
1439 int http_get_info_packs(const char *base_url
, struct packed_git
**packs_head
)
1441 struct http_get_options options
= {0};
1444 struct strbuf buf
= STRBUF_INIT
;
1445 unsigned char sha1
[20];
1447 end_url_with_slash(&buf
, base_url
);
1448 strbuf_addstr(&buf
, "objects/info/packs");
1449 url
= strbuf_detach(&buf
, NULL
);
1451 options
.no_cache
= 1;
1452 ret
= http_get_strbuf(url
, &buf
, &options
);
1457 while (i
< buf
.len
) {
1461 if (i
+ 52 <= buf
.len
&&
1462 starts_with(data
+ i
, " pack-") &&
1463 starts_with(data
+ i
+ 46, ".pack\n")) {
1464 get_sha1_hex(data
+ i
+ 6, sha1
);
1465 fetch_and_setup_pack_index(packs_head
, sha1
,
1471 while (i
< buf
.len
&& data
[i
] != '\n')
1482 void release_http_pack_request(struct http_pack_request
*preq
)
1484 if (preq
->packfile
!= NULL
) {
1485 fclose(preq
->packfile
);
1486 preq
->packfile
= NULL
;
1488 if (preq
->range_header
!= NULL
) {
1489 curl_slist_free_all(preq
->range_header
);
1490 preq
->range_header
= NULL
;
1497 int finish_http_pack_request(struct http_pack_request
*preq
)
1499 struct packed_git
**lst
;
1500 struct packed_git
*p
= preq
->target
;
1502 struct child_process ip
= CHILD_PROCESS_INIT
;
1503 const char *ip_argv
[8];
1505 close_pack_index(p
);
1507 fclose(preq
->packfile
);
1508 preq
->packfile
= NULL
;
1512 lst
= &((*lst
)->next
);
1513 *lst
= (*lst
)->next
;
1515 tmp_idx
= xstrdup(preq
->tmpfile
);
1516 strcpy(tmp_idx
+ strlen(tmp_idx
) - strlen(".pack.temp"),
1519 ip_argv
[0] = "index-pack";
1521 ip_argv
[2] = tmp_idx
;
1522 ip_argv
[3] = preq
->tmpfile
;
1530 if (run_command(&ip
)) {
1531 unlink(preq
->tmpfile
);
1537 unlink(sha1_pack_index_name(p
->sha1
));
1539 if (move_temp_to_file(preq
->tmpfile
, sha1_pack_name(p
->sha1
))
1540 || move_temp_to_file(tmp_idx
, sha1_pack_index_name(p
->sha1
))) {
1545 install_packed_git(p
);
1550 struct http_pack_request
*new_http_pack_request(
1551 struct packed_git
*target
, const char *base_url
)
1554 char range
[RANGE_HEADER_SIZE
];
1555 struct strbuf buf
= STRBUF_INIT
;
1556 struct http_pack_request
*preq
;
1558 preq
= xcalloc(1, sizeof(*preq
));
1559 preq
->target
= target
;
1561 end_url_with_slash(&buf
, base_url
);
1562 strbuf_addf(&buf
, "objects/pack/pack-%s.pack",
1563 sha1_to_hex(target
->sha1
));
1564 preq
->url
= strbuf_detach(&buf
, NULL
);
1566 snprintf(preq
->tmpfile
, sizeof(preq
->tmpfile
), "%s.temp",
1567 sha1_pack_name(target
->sha1
));
1568 preq
->packfile
= fopen(preq
->tmpfile
, "a");
1569 if (!preq
->packfile
) {
1570 error("Unable to open local file %s for pack",
1575 preq
->slot
= get_active_slot();
1576 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_FILE
, preq
->packfile
);
1577 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite
);
1578 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_URL
, preq
->url
);
1579 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1583 * If there is data present from a previous transfer attempt,
1584 * resume where it left off
1586 prev_posn
= ftell(preq
->packfile
);
1588 if (http_is_verbose
)
1590 "Resuming fetch of pack %s at byte %ld\n",
1591 sha1_to_hex(target
->sha1
), prev_posn
);
1592 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1593 preq
->range_header
= curl_slist_append(NULL
, range
);
1594 curl_easy_setopt(preq
->slot
->curl
, CURLOPT_HTTPHEADER
,
1595 preq
->range_header
);
1606 /* Helpers for fetching objects (loose) */
1607 static size_t fwrite_sha1_file(char *ptr
, size_t eltsize
, size_t nmemb
,
1610 unsigned char expn
[4096];
1611 size_t size
= eltsize
* nmemb
;
1613 struct http_object_request
*freq
=
1614 (struct http_object_request
*)data
;
1616 ssize_t retval
= xwrite(freq
->localfile
,
1617 (char *) ptr
+ posn
, size
- posn
);
1621 } while (posn
< size
);
1623 freq
->stream
.avail_in
= size
;
1624 freq
->stream
.next_in
= (void *)ptr
;
1626 freq
->stream
.next_out
= expn
;
1627 freq
->stream
.avail_out
= sizeof(expn
);
1628 freq
->zret
= git_inflate(&freq
->stream
, Z_SYNC_FLUSH
);
1629 git_SHA1_Update(&freq
->c
, expn
,
1630 sizeof(expn
) - freq
->stream
.avail_out
);
1631 } while (freq
->stream
.avail_in
&& freq
->zret
== Z_OK
);
1635 struct http_object_request
*new_http_object_request(const char *base_url
,
1636 unsigned char *sha1
)
1638 char *hex
= sha1_to_hex(sha1
);
1639 const char *filename
;
1640 char prevfile
[PATH_MAX
];
1642 char prev_buf
[PREV_BUF_SIZE
];
1643 ssize_t prev_read
= 0;
1645 char range
[RANGE_HEADER_SIZE
];
1646 struct curl_slist
*range_header
= NULL
;
1647 struct http_object_request
*freq
;
1649 freq
= xcalloc(1, sizeof(*freq
));
1650 hashcpy(freq
->sha1
, sha1
);
1651 freq
->localfile
= -1;
1653 filename
= sha1_file_name(sha1
);
1654 snprintf(freq
->tmpfile
, sizeof(freq
->tmpfile
),
1655 "%s.temp", filename
);
1657 snprintf(prevfile
, sizeof(prevfile
), "%s.prev", filename
);
1658 unlink_or_warn(prevfile
);
1659 rename(freq
->tmpfile
, prevfile
);
1660 unlink_or_warn(freq
->tmpfile
);
1662 if (freq
->localfile
!= -1)
1663 error("fd leakage in start: %d", freq
->localfile
);
1664 freq
->localfile
= open(freq
->tmpfile
,
1665 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1667 * This could have failed due to the "lazy directory creation";
1668 * try to mkdir the last path component.
1670 if (freq
->localfile
< 0 && errno
== ENOENT
) {
1671 char *dir
= strrchr(freq
->tmpfile
, '/');
1674 mkdir(freq
->tmpfile
, 0777);
1677 freq
->localfile
= open(freq
->tmpfile
,
1678 O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
1681 if (freq
->localfile
< 0) {
1682 error("Couldn't create temporary file %s: %s",
1683 freq
->tmpfile
, strerror(errno
));
1687 git_inflate_init(&freq
->stream
);
1689 git_SHA1_Init(&freq
->c
);
1691 freq
->url
= get_remote_object_url(base_url
, hex
, 0);
1694 * If a previous temp file is present, process what was already
1697 prevlocal
= open(prevfile
, O_RDONLY
);
1698 if (prevlocal
!= -1) {
1700 prev_read
= xread(prevlocal
, prev_buf
, PREV_BUF_SIZE
);
1702 if (fwrite_sha1_file(prev_buf
,
1705 freq
) == prev_read
) {
1706 prev_posn
+= prev_read
;
1711 } while (prev_read
> 0);
1714 unlink_or_warn(prevfile
);
1717 * Reset inflate/SHA1 if there was an error reading the previous temp
1718 * file; also rewind to the beginning of the local file.
1720 if (prev_read
== -1) {
1721 memset(&freq
->stream
, 0, sizeof(freq
->stream
));
1722 git_inflate_init(&freq
->stream
);
1723 git_SHA1_Init(&freq
->c
);
1726 lseek(freq
->localfile
, 0, SEEK_SET
);
1727 if (ftruncate(freq
->localfile
, 0) < 0) {
1728 error("Couldn't truncate temporary file %s: %s",
1729 freq
->tmpfile
, strerror(errno
));
1735 freq
->slot
= get_active_slot();
1737 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_FILE
, freq
);
1738 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_sha1_file
);
1739 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_ERRORBUFFER
, freq
->errorstr
);
1740 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_URL
, freq
->url
);
1741 curl_easy_setopt(freq
->slot
->curl
, CURLOPT_HTTPHEADER
, no_pragma_header
);
1744 * If we have successfully processed data from a previous fetch
1745 * attempt, only fetch the data we don't already have.
1748 if (http_is_verbose
)
1750 "Resuming fetch of object %s at byte %ld\n",
1752 sprintf(range
, "Range: bytes=%ld-", prev_posn
);
1753 range_header
= curl_slist_append(range_header
, range
);
1754 curl_easy_setopt(freq
->slot
->curl
,
1755 CURLOPT_HTTPHEADER
, range_header
);
1766 void process_http_object_request(struct http_object_request
*freq
)
1768 if (freq
->slot
== NULL
)
1770 freq
->curl_result
= freq
->slot
->curl_result
;
1771 freq
->http_code
= freq
->slot
->http_code
;
1775 int finish_http_object_request(struct http_object_request
*freq
)
1779 close(freq
->localfile
);
1780 freq
->localfile
= -1;
1782 process_http_object_request(freq
);
1784 if (freq
->http_code
== 416) {
1785 warning("requested range invalid; we may already have all the data.");
1786 } else if (freq
->curl_result
!= CURLE_OK
) {
1787 if (stat(freq
->tmpfile
, &st
) == 0)
1788 if (st
.st_size
== 0)
1789 unlink_or_warn(freq
->tmpfile
);
1793 git_inflate_end(&freq
->stream
);
1794 git_SHA1_Final(freq
->real_sha1
, &freq
->c
);
1795 if (freq
->zret
!= Z_STREAM_END
) {
1796 unlink_or_warn(freq
->tmpfile
);
1799 if (hashcmp(freq
->sha1
, freq
->real_sha1
)) {
1800 unlink_or_warn(freq
->tmpfile
);
1804 move_temp_to_file(freq
->tmpfile
, sha1_file_name(freq
->sha1
));
1806 return freq
->rename
;
1809 void abort_http_object_request(struct http_object_request
*freq
)
1811 unlink_or_warn(freq
->tmpfile
);
1813 release_http_object_request(freq
);
1816 void release_http_object_request(struct http_object_request
*freq
)
1818 if (freq
->localfile
!= -1) {
1819 close(freq
->localfile
);
1820 freq
->localfile
= -1;
1822 if (freq
->url
!= NULL
) {
1826 if (freq
->slot
!= NULL
) {
1827 freq
->slot
->callback_func
= NULL
;
1828 freq
->slot
->callback_data
= NULL
;
1829 release_active_slot(freq
->slot
);