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1 | #include "git-compat-util.h" | |
2 | #include "http.h" | |
3 | #include "pack.h" | |
4 | #include "sideband.h" | |
5 | #include "run-command.h" | |
6 | #include "url.h" | |
7 | #include "urlmatch.h" | |
8 | #include "credential.h" | |
9 | #include "version.h" | |
10 | #include "pkt-line.h" | |
11 | #include "gettext.h" | |
12 | ||
13 | int active_requests; | |
14 | int http_is_verbose; | |
15 | size_t http_post_buffer = 16 * LARGE_PACKET_MAX; | |
16 | ||
17 | #if LIBCURL_VERSION_NUM >= 0x070a06 | |
18 | #define LIBCURL_CAN_HANDLE_AUTH_ANY | |
19 | #endif | |
20 | ||
21 | static int min_curl_sessions = 1; | |
22 | static int curl_session_count; | |
23 | #ifdef USE_CURL_MULTI | |
24 | static int max_requests = -1; | |
25 | static CURLM *curlm; | |
26 | #endif | |
27 | #ifndef NO_CURL_EASY_DUPHANDLE | |
28 | static CURL *curl_default; | |
29 | #endif | |
30 | ||
31 | #define PREV_BUF_SIZE 4096 | |
32 | #define RANGE_HEADER_SIZE 30 | |
33 | ||
34 | char curl_errorstr[CURL_ERROR_SIZE]; | |
35 | ||
36 | static int curl_ssl_verify = -1; | |
37 | static int curl_ssl_try; | |
38 | static const char *ssl_cert; | |
39 | #if LIBCURL_VERSION_NUM >= 0x070903 | |
40 | static const char *ssl_key; | |
41 | #endif | |
42 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
43 | static const char *ssl_capath; | |
44 | #endif | |
45 | static const char *ssl_cainfo; | |
46 | static long curl_low_speed_limit = -1; | |
47 | static long curl_low_speed_time = -1; | |
48 | static int curl_ftp_no_epsv; | |
49 | static const char *curl_http_proxy; | |
50 | static const char *curl_cookie_file; | |
51 | static int curl_save_cookies; | |
52 | struct credential http_auth = CREDENTIAL_INIT; | |
53 | static int http_proactive_auth; | |
54 | static const char *user_agent; | |
55 | ||
56 | #if LIBCURL_VERSION_NUM >= 0x071700 | |
57 | /* Use CURLOPT_KEYPASSWD as is */ | |
58 | #elif LIBCURL_VERSION_NUM >= 0x070903 | |
59 | #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD | |
60 | #else | |
61 | #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD | |
62 | #endif | |
63 | ||
64 | static struct credential cert_auth = CREDENTIAL_INIT; | |
65 | static int ssl_cert_password_required; | |
66 | #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY | |
67 | static unsigned long http_auth_methods = CURLAUTH_ANY; | |
68 | #endif | |
69 | ||
70 | static struct curl_slist *pragma_header; | |
71 | static struct curl_slist *no_pragma_header; | |
72 | ||
73 | static struct active_request_slot *active_queue_head; | |
74 | ||
75 | static char *cached_accept_language; | |
76 | ||
77 | size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_) | |
78 | { | |
79 | size_t size = eltsize * nmemb; | |
80 | struct buffer *buffer = buffer_; | |
81 | ||
82 | if (size > buffer->buf.len - buffer->posn) | |
83 | size = buffer->buf.len - buffer->posn; | |
84 | memcpy(ptr, buffer->buf.buf + buffer->posn, size); | |
85 | buffer->posn += size; | |
86 | ||
87 | return size; | |
88 | } | |
89 | ||
90 | #ifndef NO_CURL_IOCTL | |
91 | curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp) | |
92 | { | |
93 | struct buffer *buffer = clientp; | |
94 | ||
95 | switch (cmd) { | |
96 | case CURLIOCMD_NOP: | |
97 | return CURLIOE_OK; | |
98 | ||
99 | case CURLIOCMD_RESTARTREAD: | |
100 | buffer->posn = 0; | |
101 | return CURLIOE_OK; | |
102 | ||
103 | default: | |
104 | return CURLIOE_UNKNOWNCMD; | |
105 | } | |
106 | } | |
107 | #endif | |
108 | ||
109 | size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_) | |
110 | { | |
111 | size_t size = eltsize * nmemb; | |
112 | struct strbuf *buffer = buffer_; | |
113 | ||
114 | strbuf_add(buffer, ptr, size); | |
115 | return size; | |
116 | } | |
117 | ||
118 | size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf) | |
119 | { | |
120 | return eltsize * nmemb; | |
121 | } | |
122 | ||
123 | static void closedown_active_slot(struct active_request_slot *slot) | |
124 | { | |
125 | active_requests--; | |
126 | slot->in_use = 0; | |
127 | } | |
128 | ||
129 | static void finish_active_slot(struct active_request_slot *slot) | |
130 | { | |
131 | closedown_active_slot(slot); | |
132 | curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code); | |
133 | ||
134 | if (slot->finished != NULL) | |
135 | (*slot->finished) = 1; | |
136 | ||
137 | /* Store slot results so they can be read after the slot is reused */ | |
138 | if (slot->results != NULL) { | |
139 | slot->results->curl_result = slot->curl_result; | |
140 | slot->results->http_code = slot->http_code; | |
141 | #if LIBCURL_VERSION_NUM >= 0x070a08 | |
142 | curl_easy_getinfo(slot->curl, CURLINFO_HTTPAUTH_AVAIL, | |
143 | &slot->results->auth_avail); | |
144 | #else | |
145 | slot->results->auth_avail = 0; | |
146 | #endif | |
147 | } | |
148 | ||
149 | /* Run callback if appropriate */ | |
150 | if (slot->callback_func != NULL) | |
151 | slot->callback_func(slot->callback_data); | |
152 | } | |
153 | ||
154 | #ifdef USE_CURL_MULTI | |
155 | static void process_curl_messages(void) | |
156 | { | |
157 | int num_messages; | |
158 | struct active_request_slot *slot; | |
159 | CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages); | |
160 | ||
161 | while (curl_message != NULL) { | |
162 | if (curl_message->msg == CURLMSG_DONE) { | |
163 | int curl_result = curl_message->data.result; | |
164 | slot = active_queue_head; | |
165 | while (slot != NULL && | |
166 | slot->curl != curl_message->easy_handle) | |
167 | slot = slot->next; | |
168 | if (slot != NULL) { | |
169 | curl_multi_remove_handle(curlm, slot->curl); | |
170 | slot->curl_result = curl_result; | |
171 | finish_active_slot(slot); | |
172 | } else { | |
173 | fprintf(stderr, "Received DONE message for unknown request!\n"); | |
174 | } | |
175 | } else { | |
176 | fprintf(stderr, "Unknown CURL message received: %d\n", | |
177 | (int)curl_message->msg); | |
178 | } | |
179 | curl_message = curl_multi_info_read(curlm, &num_messages); | |
180 | } | |
181 | } | |
182 | #endif | |
183 | ||
184 | static int http_options(const char *var, const char *value, void *cb) | |
185 | { | |
186 | if (!strcmp("http.sslverify", var)) { | |
187 | curl_ssl_verify = git_config_bool(var, value); | |
188 | return 0; | |
189 | } | |
190 | if (!strcmp("http.sslcert", var)) | |
191 | return git_config_string(&ssl_cert, var, value); | |
192 | #if LIBCURL_VERSION_NUM >= 0x070903 | |
193 | if (!strcmp("http.sslkey", var)) | |
194 | return git_config_string(&ssl_key, var, value); | |
195 | #endif | |
196 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
197 | if (!strcmp("http.sslcapath", var)) | |
198 | return git_config_string(&ssl_capath, var, value); | |
199 | #endif | |
200 | if (!strcmp("http.sslcainfo", var)) | |
201 | return git_config_string(&ssl_cainfo, var, value); | |
202 | if (!strcmp("http.sslcertpasswordprotected", var)) { | |
203 | ssl_cert_password_required = git_config_bool(var, value); | |
204 | return 0; | |
205 | } | |
206 | if (!strcmp("http.ssltry", var)) { | |
207 | curl_ssl_try = git_config_bool(var, value); | |
208 | return 0; | |
209 | } | |
210 | if (!strcmp("http.minsessions", var)) { | |
211 | min_curl_sessions = git_config_int(var, value); | |
212 | #ifndef USE_CURL_MULTI | |
213 | if (min_curl_sessions > 1) | |
214 | min_curl_sessions = 1; | |
215 | #endif | |
216 | return 0; | |
217 | } | |
218 | #ifdef USE_CURL_MULTI | |
219 | if (!strcmp("http.maxrequests", var)) { | |
220 | max_requests = git_config_int(var, value); | |
221 | return 0; | |
222 | } | |
223 | #endif | |
224 | if (!strcmp("http.lowspeedlimit", var)) { | |
225 | curl_low_speed_limit = (long)git_config_int(var, value); | |
226 | return 0; | |
227 | } | |
228 | if (!strcmp("http.lowspeedtime", var)) { | |
229 | curl_low_speed_time = (long)git_config_int(var, value); | |
230 | return 0; | |
231 | } | |
232 | ||
233 | if (!strcmp("http.noepsv", var)) { | |
234 | curl_ftp_no_epsv = git_config_bool(var, value); | |
235 | return 0; | |
236 | } | |
237 | if (!strcmp("http.proxy", var)) | |
238 | return git_config_string(&curl_http_proxy, var, value); | |
239 | ||
240 | if (!strcmp("http.cookiefile", var)) | |
241 | return git_config_string(&curl_cookie_file, var, value); | |
242 | if (!strcmp("http.savecookies", var)) { | |
243 | curl_save_cookies = git_config_bool(var, value); | |
244 | return 0; | |
245 | } | |
246 | ||
247 | if (!strcmp("http.postbuffer", var)) { | |
248 | http_post_buffer = git_config_int(var, value); | |
249 | if (http_post_buffer < LARGE_PACKET_MAX) | |
250 | http_post_buffer = LARGE_PACKET_MAX; | |
251 | return 0; | |
252 | } | |
253 | ||
254 | if (!strcmp("http.useragent", var)) | |
255 | return git_config_string(&user_agent, var, value); | |
256 | ||
257 | /* Fall back on the default ones */ | |
258 | return git_default_config(var, value, cb); | |
259 | } | |
260 | ||
261 | static void init_curl_http_auth(CURL *result) | |
262 | { | |
263 | if (!http_auth.username) | |
264 | return; | |
265 | ||
266 | credential_fill(&http_auth); | |
267 | ||
268 | #if LIBCURL_VERSION_NUM >= 0x071301 | |
269 | curl_easy_setopt(result, CURLOPT_USERNAME, http_auth.username); | |
270 | curl_easy_setopt(result, CURLOPT_PASSWORD, http_auth.password); | |
271 | #else | |
272 | { | |
273 | static struct strbuf up = STRBUF_INIT; | |
274 | /* | |
275 | * Note that we assume we only ever have a single set of | |
276 | * credentials in a given program run, so we do not have | |
277 | * to worry about updating this buffer, only setting its | |
278 | * initial value. | |
279 | */ | |
280 | if (!up.len) | |
281 | strbuf_addf(&up, "%s:%s", | |
282 | http_auth.username, http_auth.password); | |
283 | curl_easy_setopt(result, CURLOPT_USERPWD, up.buf); | |
284 | } | |
285 | #endif | |
286 | } | |
287 | ||
288 | static int has_cert_password(void) | |
289 | { | |
290 | if (ssl_cert == NULL || ssl_cert_password_required != 1) | |
291 | return 0; | |
292 | if (!cert_auth.password) { | |
293 | cert_auth.protocol = xstrdup("cert"); | |
294 | cert_auth.username = xstrdup(""); | |
295 | cert_auth.path = xstrdup(ssl_cert); | |
296 | credential_fill(&cert_auth); | |
297 | } | |
298 | return 1; | |
299 | } | |
300 | ||
301 | #if LIBCURL_VERSION_NUM >= 0x071900 | |
302 | static void set_curl_keepalive(CURL *c) | |
303 | { | |
304 | curl_easy_setopt(c, CURLOPT_TCP_KEEPALIVE, 1); | |
305 | } | |
306 | ||
307 | #elif LIBCURL_VERSION_NUM >= 0x071000 | |
308 | static int sockopt_callback(void *client, curl_socket_t fd, curlsocktype type) | |
309 | { | |
310 | int ka = 1; | |
311 | int rc; | |
312 | socklen_t len = (socklen_t)sizeof(ka); | |
313 | ||
314 | if (type != CURLSOCKTYPE_IPCXN) | |
315 | return 0; | |
316 | ||
317 | rc = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&ka, len); | |
318 | if (rc < 0) | |
319 | warning("unable to set SO_KEEPALIVE on socket %s", | |
320 | strerror(errno)); | |
321 | ||
322 | return 0; /* CURL_SOCKOPT_OK only exists since curl 7.21.5 */ | |
323 | } | |
324 | ||
325 | static void set_curl_keepalive(CURL *c) | |
326 | { | |
327 | curl_easy_setopt(c, CURLOPT_SOCKOPTFUNCTION, sockopt_callback); | |
328 | } | |
329 | ||
330 | #else | |
331 | static void set_curl_keepalive(CURL *c) | |
332 | { | |
333 | /* not supported on older curl versions */ | |
334 | } | |
335 | #endif | |
336 | ||
337 | static CURL *get_curl_handle(void) | |
338 | { | |
339 | CURL *result = curl_easy_init(); | |
340 | ||
341 | if (!result) | |
342 | die("curl_easy_init failed"); | |
343 | ||
344 | if (!curl_ssl_verify) { | |
345 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0); | |
346 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0); | |
347 | } else { | |
348 | /* Verify authenticity of the peer's certificate */ | |
349 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1); | |
350 | /* The name in the cert must match whom we tried to connect */ | |
351 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2); | |
352 | } | |
353 | ||
354 | #if LIBCURL_VERSION_NUM >= 0x070907 | |
355 | curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL); | |
356 | #endif | |
357 | #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY | |
358 | curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY); | |
359 | #endif | |
360 | ||
361 | if (http_proactive_auth) | |
362 | init_curl_http_auth(result); | |
363 | ||
364 | if (ssl_cert != NULL) | |
365 | curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert); | |
366 | if (has_cert_password()) | |
367 | curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password); | |
368 | #if LIBCURL_VERSION_NUM >= 0x070903 | |
369 | if (ssl_key != NULL) | |
370 | curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key); | |
371 | #endif | |
372 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
373 | if (ssl_capath != NULL) | |
374 | curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath); | |
375 | #endif | |
376 | if (ssl_cainfo != NULL) | |
377 | curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo); | |
378 | ||
379 | if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) { | |
380 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT, | |
381 | curl_low_speed_limit); | |
382 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME, | |
383 | curl_low_speed_time); | |
384 | } | |
385 | ||
386 | curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1); | |
387 | #if LIBCURL_VERSION_NUM >= 0x071301 | |
388 | curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL); | |
389 | #elif LIBCURL_VERSION_NUM >= 0x071101 | |
390 | curl_easy_setopt(result, CURLOPT_POST301, 1); | |
391 | #endif | |
392 | ||
393 | if (getenv("GIT_CURL_VERBOSE")) | |
394 | curl_easy_setopt(result, CURLOPT_VERBOSE, 1); | |
395 | ||
396 | curl_easy_setopt(result, CURLOPT_USERAGENT, | |
397 | user_agent ? user_agent : git_user_agent()); | |
398 | ||
399 | if (curl_ftp_no_epsv) | |
400 | curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0); | |
401 | ||
402 | #ifdef CURLOPT_USE_SSL | |
403 | if (curl_ssl_try) | |
404 | curl_easy_setopt(result, CURLOPT_USE_SSL, CURLUSESSL_TRY); | |
405 | #endif | |
406 | ||
407 | if (curl_http_proxy) { | |
408 | curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy); | |
409 | #if LIBCURL_VERSION_NUM >= 0x070a07 | |
410 | curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY); | |
411 | #endif | |
412 | } | |
413 | ||
414 | set_curl_keepalive(result); | |
415 | ||
416 | return result; | |
417 | } | |
418 | ||
419 | static void set_from_env(const char **var, const char *envname) | |
420 | { | |
421 | const char *val = getenv(envname); | |
422 | if (val) | |
423 | *var = val; | |
424 | } | |
425 | ||
426 | void http_init(struct remote *remote, const char *url, int proactive_auth) | |
427 | { | |
428 | char *low_speed_limit; | |
429 | char *low_speed_time; | |
430 | char *normalized_url; | |
431 | struct urlmatch_config config = { STRING_LIST_INIT_DUP }; | |
432 | ||
433 | config.section = "http"; | |
434 | config.key = NULL; | |
435 | config.collect_fn = http_options; | |
436 | config.cascade_fn = git_default_config; | |
437 | config.cb = NULL; | |
438 | ||
439 | http_is_verbose = 0; | |
440 | normalized_url = url_normalize(url, &config.url); | |
441 | ||
442 | git_config(urlmatch_config_entry, &config); | |
443 | free(normalized_url); | |
444 | ||
445 | if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) | |
446 | die("curl_global_init failed"); | |
447 | ||
448 | http_proactive_auth = proactive_auth; | |
449 | ||
450 | if (remote && remote->http_proxy) | |
451 | curl_http_proxy = xstrdup(remote->http_proxy); | |
452 | ||
453 | pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache"); | |
454 | no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:"); | |
455 | ||
456 | #ifdef USE_CURL_MULTI | |
457 | { | |
458 | char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS"); | |
459 | if (http_max_requests != NULL) | |
460 | max_requests = atoi(http_max_requests); | |
461 | } | |
462 | ||
463 | curlm = curl_multi_init(); | |
464 | if (!curlm) | |
465 | die("curl_multi_init failed"); | |
466 | #endif | |
467 | ||
468 | if (getenv("GIT_SSL_NO_VERIFY")) | |
469 | curl_ssl_verify = 0; | |
470 | ||
471 | set_from_env(&ssl_cert, "GIT_SSL_CERT"); | |
472 | #if LIBCURL_VERSION_NUM >= 0x070903 | |
473 | set_from_env(&ssl_key, "GIT_SSL_KEY"); | |
474 | #endif | |
475 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
476 | set_from_env(&ssl_capath, "GIT_SSL_CAPATH"); | |
477 | #endif | |
478 | set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO"); | |
479 | ||
480 | set_from_env(&user_agent, "GIT_HTTP_USER_AGENT"); | |
481 | ||
482 | low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT"); | |
483 | if (low_speed_limit != NULL) | |
484 | curl_low_speed_limit = strtol(low_speed_limit, NULL, 10); | |
485 | low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME"); | |
486 | if (low_speed_time != NULL) | |
487 | curl_low_speed_time = strtol(low_speed_time, NULL, 10); | |
488 | ||
489 | if (curl_ssl_verify == -1) | |
490 | curl_ssl_verify = 1; | |
491 | ||
492 | curl_session_count = 0; | |
493 | #ifdef USE_CURL_MULTI | |
494 | if (max_requests < 1) | |
495 | max_requests = DEFAULT_MAX_REQUESTS; | |
496 | #endif | |
497 | ||
498 | if (getenv("GIT_CURL_FTP_NO_EPSV")) | |
499 | curl_ftp_no_epsv = 1; | |
500 | ||
501 | if (url) { | |
502 | credential_from_url(&http_auth, url); | |
503 | if (!ssl_cert_password_required && | |
504 | getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") && | |
505 | starts_with(url, "https://")) | |
506 | ssl_cert_password_required = 1; | |
507 | } | |
508 | ||
509 | #ifndef NO_CURL_EASY_DUPHANDLE | |
510 | curl_default = get_curl_handle(); | |
511 | #endif | |
512 | } | |
513 | ||
514 | void http_cleanup(void) | |
515 | { | |
516 | struct active_request_slot *slot = active_queue_head; | |
517 | ||
518 | while (slot != NULL) { | |
519 | struct active_request_slot *next = slot->next; | |
520 | if (slot->curl != NULL) { | |
521 | #ifdef USE_CURL_MULTI | |
522 | curl_multi_remove_handle(curlm, slot->curl); | |
523 | #endif | |
524 | curl_easy_cleanup(slot->curl); | |
525 | } | |
526 | free(slot); | |
527 | slot = next; | |
528 | } | |
529 | active_queue_head = NULL; | |
530 | ||
531 | #ifndef NO_CURL_EASY_DUPHANDLE | |
532 | curl_easy_cleanup(curl_default); | |
533 | #endif | |
534 | ||
535 | #ifdef USE_CURL_MULTI | |
536 | curl_multi_cleanup(curlm); | |
537 | #endif | |
538 | curl_global_cleanup(); | |
539 | ||
540 | curl_slist_free_all(pragma_header); | |
541 | pragma_header = NULL; | |
542 | ||
543 | curl_slist_free_all(no_pragma_header); | |
544 | no_pragma_header = NULL; | |
545 | ||
546 | if (curl_http_proxy) { | |
547 | free((void *)curl_http_proxy); | |
548 | curl_http_proxy = NULL; | |
549 | } | |
550 | ||
551 | if (cert_auth.password != NULL) { | |
552 | memset(cert_auth.password, 0, strlen(cert_auth.password)); | |
553 | free(cert_auth.password); | |
554 | cert_auth.password = NULL; | |
555 | } | |
556 | ssl_cert_password_required = 0; | |
557 | ||
558 | free(cached_accept_language); | |
559 | cached_accept_language = NULL; | |
560 | } | |
561 | ||
562 | struct active_request_slot *get_active_slot(void) | |
563 | { | |
564 | struct active_request_slot *slot = active_queue_head; | |
565 | struct active_request_slot *newslot; | |
566 | ||
567 | #ifdef USE_CURL_MULTI | |
568 | int num_transfers; | |
569 | ||
570 | /* Wait for a slot to open up if the queue is full */ | |
571 | while (active_requests >= max_requests) { | |
572 | curl_multi_perform(curlm, &num_transfers); | |
573 | if (num_transfers < active_requests) | |
574 | process_curl_messages(); | |
575 | } | |
576 | #endif | |
577 | ||
578 | while (slot != NULL && slot->in_use) | |
579 | slot = slot->next; | |
580 | ||
581 | if (slot == NULL) { | |
582 | newslot = xmalloc(sizeof(*newslot)); | |
583 | newslot->curl = NULL; | |
584 | newslot->in_use = 0; | |
585 | newslot->next = NULL; | |
586 | ||
587 | slot = active_queue_head; | |
588 | if (slot == NULL) { | |
589 | active_queue_head = newslot; | |
590 | } else { | |
591 | while (slot->next != NULL) | |
592 | slot = slot->next; | |
593 | slot->next = newslot; | |
594 | } | |
595 | slot = newslot; | |
596 | } | |
597 | ||
598 | if (slot->curl == NULL) { | |
599 | #ifdef NO_CURL_EASY_DUPHANDLE | |
600 | slot->curl = get_curl_handle(); | |
601 | #else | |
602 | slot->curl = curl_easy_duphandle(curl_default); | |
603 | #endif | |
604 | curl_session_count++; | |
605 | } | |
606 | ||
607 | active_requests++; | |
608 | slot->in_use = 1; | |
609 | slot->results = NULL; | |
610 | slot->finished = NULL; | |
611 | slot->callback_data = NULL; | |
612 | slot->callback_func = NULL; | |
613 | curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file); | |
614 | if (curl_save_cookies) | |
615 | curl_easy_setopt(slot->curl, CURLOPT_COOKIEJAR, curl_cookie_file); | |
616 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header); | |
617 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr); | |
618 | curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL); | |
619 | curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL); | |
620 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL); | |
621 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL); | |
622 | curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0); | |
623 | curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); | |
624 | curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 1); | |
625 | #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY | |
626 | curl_easy_setopt(slot->curl, CURLOPT_HTTPAUTH, http_auth_methods); | |
627 | #endif | |
628 | if (http_auth.password) | |
629 | init_curl_http_auth(slot->curl); | |
630 | ||
631 | return slot; | |
632 | } | |
633 | ||
634 | int start_active_slot(struct active_request_slot *slot) | |
635 | { | |
636 | #ifdef USE_CURL_MULTI | |
637 | CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl); | |
638 | int num_transfers; | |
639 | ||
640 | if (curlm_result != CURLM_OK && | |
641 | curlm_result != CURLM_CALL_MULTI_PERFORM) { | |
642 | active_requests--; | |
643 | slot->in_use = 0; | |
644 | return 0; | |
645 | } | |
646 | ||
647 | /* | |
648 | * We know there must be something to do, since we just added | |
649 | * something. | |
650 | */ | |
651 | curl_multi_perform(curlm, &num_transfers); | |
652 | #endif | |
653 | return 1; | |
654 | } | |
655 | ||
656 | #ifdef USE_CURL_MULTI | |
657 | struct fill_chain { | |
658 | void *data; | |
659 | int (*fill)(void *); | |
660 | struct fill_chain *next; | |
661 | }; | |
662 | ||
663 | static struct fill_chain *fill_cfg; | |
664 | ||
665 | void add_fill_function(void *data, int (*fill)(void *)) | |
666 | { | |
667 | struct fill_chain *new = xmalloc(sizeof(*new)); | |
668 | struct fill_chain **linkp = &fill_cfg; | |
669 | new->data = data; | |
670 | new->fill = fill; | |
671 | new->next = NULL; | |
672 | while (*linkp) | |
673 | linkp = &(*linkp)->next; | |
674 | *linkp = new; | |
675 | } | |
676 | ||
677 | void fill_active_slots(void) | |
678 | { | |
679 | struct active_request_slot *slot = active_queue_head; | |
680 | ||
681 | while (active_requests < max_requests) { | |
682 | struct fill_chain *fill; | |
683 | for (fill = fill_cfg; fill; fill = fill->next) | |
684 | if (fill->fill(fill->data)) | |
685 | break; | |
686 | ||
687 | if (!fill) | |
688 | break; | |
689 | } | |
690 | ||
691 | while (slot != NULL) { | |
692 | if (!slot->in_use && slot->curl != NULL | |
693 | && curl_session_count > min_curl_sessions) { | |
694 | curl_easy_cleanup(slot->curl); | |
695 | slot->curl = NULL; | |
696 | curl_session_count--; | |
697 | } | |
698 | slot = slot->next; | |
699 | } | |
700 | } | |
701 | ||
702 | void step_active_slots(void) | |
703 | { | |
704 | int num_transfers; | |
705 | CURLMcode curlm_result; | |
706 | ||
707 | do { | |
708 | curlm_result = curl_multi_perform(curlm, &num_transfers); | |
709 | } while (curlm_result == CURLM_CALL_MULTI_PERFORM); | |
710 | if (num_transfers < active_requests) { | |
711 | process_curl_messages(); | |
712 | fill_active_slots(); | |
713 | } | |
714 | } | |
715 | #endif | |
716 | ||
717 | void run_active_slot(struct active_request_slot *slot) | |
718 | { | |
719 | #ifdef USE_CURL_MULTI | |
720 | fd_set readfds; | |
721 | fd_set writefds; | |
722 | fd_set excfds; | |
723 | int max_fd; | |
724 | struct timeval select_timeout; | |
725 | int finished = 0; | |
726 | ||
727 | slot->finished = &finished; | |
728 | while (!finished) { | |
729 | step_active_slots(); | |
730 | ||
731 | if (slot->in_use) { | |
732 | #if LIBCURL_VERSION_NUM >= 0x070f04 | |
733 | long curl_timeout; | |
734 | curl_multi_timeout(curlm, &curl_timeout); | |
735 | if (curl_timeout == 0) { | |
736 | continue; | |
737 | } else if (curl_timeout == -1) { | |
738 | select_timeout.tv_sec = 0; | |
739 | select_timeout.tv_usec = 50000; | |
740 | } else { | |
741 | select_timeout.tv_sec = curl_timeout / 1000; | |
742 | select_timeout.tv_usec = (curl_timeout % 1000) * 1000; | |
743 | } | |
744 | #else | |
745 | select_timeout.tv_sec = 0; | |
746 | select_timeout.tv_usec = 50000; | |
747 | #endif | |
748 | ||
749 | max_fd = -1; | |
750 | FD_ZERO(&readfds); | |
751 | FD_ZERO(&writefds); | |
752 | FD_ZERO(&excfds); | |
753 | curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd); | |
754 | ||
755 | /* | |
756 | * It can happen that curl_multi_timeout returns a pathologically | |
757 | * long timeout when curl_multi_fdset returns no file descriptors | |
758 | * to read. See commit message for more details. | |
759 | */ | |
760 | if (max_fd < 0 && | |
761 | (select_timeout.tv_sec > 0 || | |
762 | select_timeout.tv_usec > 50000)) { | |
763 | select_timeout.tv_sec = 0; | |
764 | select_timeout.tv_usec = 50000; | |
765 | } | |
766 | ||
767 | select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout); | |
768 | } | |
769 | } | |
770 | #else | |
771 | while (slot->in_use) { | |
772 | slot->curl_result = curl_easy_perform(slot->curl); | |
773 | finish_active_slot(slot); | |
774 | } | |
775 | #endif | |
776 | } | |
777 | ||
778 | static void release_active_slot(struct active_request_slot *slot) | |
779 | { | |
780 | closedown_active_slot(slot); | |
781 | if (slot->curl && curl_session_count > min_curl_sessions) { | |
782 | #ifdef USE_CURL_MULTI | |
783 | curl_multi_remove_handle(curlm, slot->curl); | |
784 | #endif | |
785 | curl_easy_cleanup(slot->curl); | |
786 | slot->curl = NULL; | |
787 | curl_session_count--; | |
788 | } | |
789 | #ifdef USE_CURL_MULTI | |
790 | fill_active_slots(); | |
791 | #endif | |
792 | } | |
793 | ||
794 | void finish_all_active_slots(void) | |
795 | { | |
796 | struct active_request_slot *slot = active_queue_head; | |
797 | ||
798 | while (slot != NULL) | |
799 | if (slot->in_use) { | |
800 | run_active_slot(slot); | |
801 | slot = active_queue_head; | |
802 | } else { | |
803 | slot = slot->next; | |
804 | } | |
805 | } | |
806 | ||
807 | /* Helpers for modifying and creating URLs */ | |
808 | static inline int needs_quote(int ch) | |
809 | { | |
810 | if (((ch >= 'A') && (ch <= 'Z')) | |
811 | || ((ch >= 'a') && (ch <= 'z')) | |
812 | || ((ch >= '0') && (ch <= '9')) | |
813 | || (ch == '/') | |
814 | || (ch == '-') | |
815 | || (ch == '.')) | |
816 | return 0; | |
817 | return 1; | |
818 | } | |
819 | ||
820 | static char *quote_ref_url(const char *base, const char *ref) | |
821 | { | |
822 | struct strbuf buf = STRBUF_INIT; | |
823 | const char *cp; | |
824 | int ch; | |
825 | ||
826 | end_url_with_slash(&buf, base); | |
827 | ||
828 | for (cp = ref; (ch = *cp) != 0; cp++) | |
829 | if (needs_quote(ch)) | |
830 | strbuf_addf(&buf, "%%%02x", ch); | |
831 | else | |
832 | strbuf_addch(&buf, *cp); | |
833 | ||
834 | return strbuf_detach(&buf, NULL); | |
835 | } | |
836 | ||
837 | void append_remote_object_url(struct strbuf *buf, const char *url, | |
838 | const char *hex, | |
839 | int only_two_digit_prefix) | |
840 | { | |
841 | end_url_with_slash(buf, url); | |
842 | ||
843 | strbuf_addf(buf, "objects/%.*s/", 2, hex); | |
844 | if (!only_two_digit_prefix) | |
845 | strbuf_addf(buf, "%s", hex+2); | |
846 | } | |
847 | ||
848 | char *get_remote_object_url(const char *url, const char *hex, | |
849 | int only_two_digit_prefix) | |
850 | { | |
851 | struct strbuf buf = STRBUF_INIT; | |
852 | append_remote_object_url(&buf, url, hex, only_two_digit_prefix); | |
853 | return strbuf_detach(&buf, NULL); | |
854 | } | |
855 | ||
856 | static int handle_curl_result(struct slot_results *results) | |
857 | { | |
858 | /* | |
859 | * If we see a failing http code with CURLE_OK, we have turned off | |
860 | * FAILONERROR (to keep the server's custom error response), and should | |
861 | * translate the code into failure here. | |
862 | */ | |
863 | if (results->curl_result == CURLE_OK && | |
864 | results->http_code >= 400) { | |
865 | results->curl_result = CURLE_HTTP_RETURNED_ERROR; | |
866 | /* | |
867 | * Normally curl will already have put the "reason phrase" | |
868 | * from the server into curl_errorstr; unfortunately without | |
869 | * FAILONERROR it is lost, so we can give only the numeric | |
870 | * status code. | |
871 | */ | |
872 | snprintf(curl_errorstr, sizeof(curl_errorstr), | |
873 | "The requested URL returned error: %ld", | |
874 | results->http_code); | |
875 | } | |
876 | ||
877 | if (results->curl_result == CURLE_OK) { | |
878 | credential_approve(&http_auth); | |
879 | return HTTP_OK; | |
880 | } else if (missing_target(results)) | |
881 | return HTTP_MISSING_TARGET; | |
882 | else if (results->http_code == 401) { | |
883 | if (http_auth.username && http_auth.password) { | |
884 | credential_reject(&http_auth); | |
885 | return HTTP_NOAUTH; | |
886 | } else { | |
887 | #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY | |
888 | http_auth_methods &= ~CURLAUTH_GSSNEGOTIATE; | |
889 | #endif | |
890 | return HTTP_REAUTH; | |
891 | } | |
892 | } else { | |
893 | #if LIBCURL_VERSION_NUM >= 0x070c00 | |
894 | if (!curl_errorstr[0]) | |
895 | strlcpy(curl_errorstr, | |
896 | curl_easy_strerror(results->curl_result), | |
897 | sizeof(curl_errorstr)); | |
898 | #endif | |
899 | return HTTP_ERROR; | |
900 | } | |
901 | } | |
902 | ||
903 | int run_one_slot(struct active_request_slot *slot, | |
904 | struct slot_results *results) | |
905 | { | |
906 | slot->results = results; | |
907 | if (!start_active_slot(slot)) { | |
908 | snprintf(curl_errorstr, sizeof(curl_errorstr), | |
909 | "failed to start HTTP request"); | |
910 | return HTTP_START_FAILED; | |
911 | } | |
912 | ||
913 | run_active_slot(slot); | |
914 | return handle_curl_result(results); | |
915 | } | |
916 | ||
917 | static CURLcode curlinfo_strbuf(CURL *curl, CURLINFO info, struct strbuf *buf) | |
918 | { | |
919 | char *ptr; | |
920 | CURLcode ret; | |
921 | ||
922 | strbuf_reset(buf); | |
923 | ret = curl_easy_getinfo(curl, info, &ptr); | |
924 | if (!ret && ptr) | |
925 | strbuf_addstr(buf, ptr); | |
926 | return ret; | |
927 | } | |
928 | ||
929 | /* | |
930 | * Check for and extract a content-type parameter. "raw" | |
931 | * should be positioned at the start of the potential | |
932 | * parameter, with any whitespace already removed. | |
933 | * | |
934 | * "name" is the name of the parameter. The value is appended | |
935 | * to "out". | |
936 | */ | |
937 | static int extract_param(const char *raw, const char *name, | |
938 | struct strbuf *out) | |
939 | { | |
940 | size_t len = strlen(name); | |
941 | ||
942 | if (strncasecmp(raw, name, len)) | |
943 | return -1; | |
944 | raw += len; | |
945 | ||
946 | if (*raw != '=') | |
947 | return -1; | |
948 | raw++; | |
949 | ||
950 | while (*raw && !isspace(*raw) && *raw != ';') | |
951 | strbuf_addch(out, *raw++); | |
952 | return 0; | |
953 | } | |
954 | ||
955 | /* | |
956 | * Extract a normalized version of the content type, with any | |
957 | * spaces suppressed, all letters lowercased, and no trailing ";" | |
958 | * or parameters. | |
959 | * | |
960 | * Note that we will silently remove even invalid whitespace. For | |
961 | * example, "text / plain" is specifically forbidden by RFC 2616, | |
962 | * but "text/plain" is the only reasonable output, and this keeps | |
963 | * our code simple. | |
964 | * | |
965 | * If the "charset" argument is not NULL, store the value of any | |
966 | * charset parameter there. | |
967 | * | |
968 | * Example: | |
969 | * "TEXT/PLAIN; charset=utf-8" -> "text/plain", "utf-8" | |
970 | * "text / plain" -> "text/plain" | |
971 | */ | |
972 | static void extract_content_type(struct strbuf *raw, struct strbuf *type, | |
973 | struct strbuf *charset) | |
974 | { | |
975 | const char *p; | |
976 | ||
977 | strbuf_reset(type); | |
978 | strbuf_grow(type, raw->len); | |
979 | for (p = raw->buf; *p; p++) { | |
980 | if (isspace(*p)) | |
981 | continue; | |
982 | if (*p == ';') { | |
983 | p++; | |
984 | break; | |
985 | } | |
986 | strbuf_addch(type, tolower(*p)); | |
987 | } | |
988 | ||
989 | if (!charset) | |
990 | return; | |
991 | ||
992 | strbuf_reset(charset); | |
993 | while (*p) { | |
994 | while (isspace(*p) || *p == ';') | |
995 | p++; | |
996 | if (!extract_param(p, "charset", charset)) | |
997 | return; | |
998 | while (*p && !isspace(*p)) | |
999 | p++; | |
1000 | } | |
1001 | ||
1002 | if (!charset->len && starts_with(type->buf, "text/")) | |
1003 | strbuf_addstr(charset, "ISO-8859-1"); | |
1004 | } | |
1005 | ||
1006 | static void write_accept_language(struct strbuf *buf) | |
1007 | { | |
1008 | /* | |
1009 | * MAX_DECIMAL_PLACES must not be larger than 3. If it is larger than | |
1010 | * that, q-value will be smaller than 0.001, the minimum q-value the | |
1011 | * HTTP specification allows. See | |
1012 | * http://tools.ietf.org/html/rfc7231#section-5.3.1 for q-value. | |
1013 | */ | |
1014 | const int MAX_DECIMAL_PLACES = 3; | |
1015 | const int MAX_LANGUAGE_TAGS = 1000; | |
1016 | const int MAX_ACCEPT_LANGUAGE_HEADER_SIZE = 4000; | |
1017 | char **language_tags = NULL; | |
1018 | int num_langs = 0; | |
1019 | const char *s = get_preferred_languages(); | |
1020 | int i; | |
1021 | struct strbuf tag = STRBUF_INIT; | |
1022 | ||
1023 | /* Don't add Accept-Language header if no language is preferred. */ | |
1024 | if (!s) | |
1025 | return; | |
1026 | ||
1027 | /* | |
1028 | * Split the colon-separated string of preferred languages into | |
1029 | * language_tags array. | |
1030 | */ | |
1031 | do { | |
1032 | /* collect language tag */ | |
1033 | for (; *s && (isalnum(*s) || *s == '_'); s++) | |
1034 | strbuf_addch(&tag, *s == '_' ? '-' : *s); | |
1035 | ||
1036 | /* skip .codeset, @modifier and any other unnecessary parts */ | |
1037 | while (*s && *s != ':') | |
1038 | s++; | |
1039 | ||
1040 | if (tag.len) { | |
1041 | num_langs++; | |
1042 | REALLOC_ARRAY(language_tags, num_langs); | |
1043 | language_tags[num_langs - 1] = strbuf_detach(&tag, NULL); | |
1044 | if (num_langs >= MAX_LANGUAGE_TAGS - 1) /* -1 for '*' */ | |
1045 | break; | |
1046 | } | |
1047 | } while (*s++); | |
1048 | ||
1049 | /* write Accept-Language header into buf */ | |
1050 | if (num_langs) { | |
1051 | int last_buf_len = 0; | |
1052 | int max_q; | |
1053 | int decimal_places; | |
1054 | char q_format[32]; | |
1055 | ||
1056 | /* add '*' */ | |
1057 | REALLOC_ARRAY(language_tags, num_langs + 1); | |
1058 | language_tags[num_langs++] = "*"; /* it's OK; this won't be freed */ | |
1059 | ||
1060 | /* compute decimal_places */ | |
1061 | for (max_q = 1, decimal_places = 0; | |
1062 | max_q < num_langs && decimal_places <= MAX_DECIMAL_PLACES; | |
1063 | decimal_places++, max_q *= 10) | |
1064 | ; | |
1065 | ||
1066 | sprintf(q_format, ";q=0.%%0%dd", decimal_places); | |
1067 | ||
1068 | strbuf_addstr(buf, "Accept-Language: "); | |
1069 | ||
1070 | for (i = 0; i < num_langs; i++) { | |
1071 | if (i > 0) | |
1072 | strbuf_addstr(buf, ", "); | |
1073 | ||
1074 | strbuf_addstr(buf, language_tags[i]); | |
1075 | ||
1076 | if (i > 0) | |
1077 | strbuf_addf(buf, q_format, max_q - i); | |
1078 | ||
1079 | if (buf->len > MAX_ACCEPT_LANGUAGE_HEADER_SIZE) { | |
1080 | strbuf_remove(buf, last_buf_len, buf->len - last_buf_len); | |
1081 | break; | |
1082 | } | |
1083 | ||
1084 | last_buf_len = buf->len; | |
1085 | } | |
1086 | } | |
1087 | ||
1088 | /* free language tags -- last one is a static '*' */ | |
1089 | for (i = 0; i < num_langs - 1; i++) | |
1090 | free(language_tags[i]); | |
1091 | free(language_tags); | |
1092 | } | |
1093 | ||
1094 | /* | |
1095 | * Get an Accept-Language header which indicates user's preferred languages. | |
1096 | * | |
1097 | * Examples: | |
1098 | * LANGUAGE= -> "" | |
1099 | * LANGUAGE=ko:en -> "Accept-Language: ko, en; q=0.9, *; q=0.1" | |
1100 | * LANGUAGE=ko_KR.UTF-8:sr@latin -> "Accept-Language: ko-KR, sr; q=0.9, *; q=0.1" | |
1101 | * LANGUAGE=ko LANG=en_US.UTF-8 -> "Accept-Language: ko, *; q=0.1" | |
1102 | * LANGUAGE= LANG=en_US.UTF-8 -> "Accept-Language: en-US, *; q=0.1" | |
1103 | * LANGUAGE= LANG=C -> "" | |
1104 | */ | |
1105 | static const char *get_accept_language(void) | |
1106 | { | |
1107 | if (!cached_accept_language) { | |
1108 | struct strbuf buf = STRBUF_INIT; | |
1109 | write_accept_language(&buf); | |
1110 | if (buf.len > 0) | |
1111 | cached_accept_language = strbuf_detach(&buf, NULL); | |
1112 | } | |
1113 | ||
1114 | return cached_accept_language; | |
1115 | } | |
1116 | ||
1117 | /* http_request() targets */ | |
1118 | #define HTTP_REQUEST_STRBUF 0 | |
1119 | #define HTTP_REQUEST_FILE 1 | |
1120 | ||
1121 | static int http_request(const char *url, | |
1122 | void *result, int target, | |
1123 | const struct http_get_options *options) | |
1124 | { | |
1125 | struct active_request_slot *slot; | |
1126 | struct slot_results results; | |
1127 | struct curl_slist *headers = NULL; | |
1128 | struct strbuf buf = STRBUF_INIT; | |
1129 | const char *accept_language; | |
1130 | int ret; | |
1131 | ||
1132 | slot = get_active_slot(); | |
1133 | curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); | |
1134 | ||
1135 | if (result == NULL) { | |
1136 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1); | |
1137 | } else { | |
1138 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0); | |
1139 | curl_easy_setopt(slot->curl, CURLOPT_FILE, result); | |
1140 | ||
1141 | if (target == HTTP_REQUEST_FILE) { | |
1142 | long posn = ftell(result); | |
1143 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, | |
1144 | fwrite); | |
1145 | if (posn > 0) { | |
1146 | strbuf_addf(&buf, "Range: bytes=%ld-", posn); | |
1147 | headers = curl_slist_append(headers, buf.buf); | |
1148 | strbuf_reset(&buf); | |
1149 | } | |
1150 | } else | |
1151 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, | |
1152 | fwrite_buffer); | |
1153 | } | |
1154 | ||
1155 | accept_language = get_accept_language(); | |
1156 | ||
1157 | if (accept_language) | |
1158 | headers = curl_slist_append(headers, accept_language); | |
1159 | ||
1160 | strbuf_addstr(&buf, "Pragma:"); | |
1161 | if (options && options->no_cache) | |
1162 | strbuf_addstr(&buf, " no-cache"); | |
1163 | if (options && options->keep_error) | |
1164 | curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0); | |
1165 | ||
1166 | headers = curl_slist_append(headers, buf.buf); | |
1167 | ||
1168 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
1169 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers); | |
1170 | curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip"); | |
1171 | ||
1172 | ret = run_one_slot(slot, &results); | |
1173 | ||
1174 | if (options && options->content_type) { | |
1175 | struct strbuf raw = STRBUF_INIT; | |
1176 | curlinfo_strbuf(slot->curl, CURLINFO_CONTENT_TYPE, &raw); | |
1177 | extract_content_type(&raw, options->content_type, | |
1178 | options->charset); | |
1179 | strbuf_release(&raw); | |
1180 | } | |
1181 | ||
1182 | if (options && options->effective_url) | |
1183 | curlinfo_strbuf(slot->curl, CURLINFO_EFFECTIVE_URL, | |
1184 | options->effective_url); | |
1185 | ||
1186 | curl_slist_free_all(headers); | |
1187 | strbuf_release(&buf); | |
1188 | ||
1189 | return ret; | |
1190 | } | |
1191 | ||
1192 | /* | |
1193 | * Update the "base" url to a more appropriate value, as deduced by | |
1194 | * redirects seen when requesting a URL starting with "url". | |
1195 | * | |
1196 | * The "asked" parameter is a URL that we asked curl to access, and must begin | |
1197 | * with "base". | |
1198 | * | |
1199 | * The "got" parameter is the URL that curl reported to us as where we ended | |
1200 | * up. | |
1201 | * | |
1202 | * Returns 1 if we updated the base url, 0 otherwise. | |
1203 | * | |
1204 | * Our basic strategy is to compare "base" and "asked" to find the bits | |
1205 | * specific to our request. We then strip those bits off of "got" to yield the | |
1206 | * new base. So for example, if our base is "http://example.com/foo.git", | |
1207 | * and we ask for "http://example.com/foo.git/info/refs", we might end up | |
1208 | * with "https://other.example.com/foo.git/info/refs". We would want the | |
1209 | * new URL to become "https://other.example.com/foo.git". | |
1210 | * | |
1211 | * Note that this assumes a sane redirect scheme. It's entirely possible | |
1212 | * in the example above to end up at a URL that does not even end in | |
1213 | * "info/refs". In such a case we simply punt, as there is not much we can | |
1214 | * do (and such a scheme is unlikely to represent a real git repository, | |
1215 | * which means we are likely about to abort anyway). | |
1216 | */ | |
1217 | static int update_url_from_redirect(struct strbuf *base, | |
1218 | const char *asked, | |
1219 | const struct strbuf *got) | |
1220 | { | |
1221 | const char *tail; | |
1222 | size_t tail_len; | |
1223 | ||
1224 | if (!strcmp(asked, got->buf)) | |
1225 | return 0; | |
1226 | ||
1227 | if (!skip_prefix(asked, base->buf, &tail)) | |
1228 | die("BUG: update_url_from_redirect: %s is not a superset of %s", | |
1229 | asked, base->buf); | |
1230 | ||
1231 | tail_len = strlen(tail); | |
1232 | ||
1233 | if (got->len < tail_len || | |
1234 | strcmp(tail, got->buf + got->len - tail_len)) | |
1235 | return 0; /* insane redirect scheme */ | |
1236 | ||
1237 | strbuf_reset(base); | |
1238 | strbuf_add(base, got->buf, got->len - tail_len); | |
1239 | return 1; | |
1240 | } | |
1241 | ||
1242 | static int http_request_reauth(const char *url, | |
1243 | void *result, int target, | |
1244 | struct http_get_options *options) | |
1245 | { | |
1246 | int ret = http_request(url, result, target, options); | |
1247 | ||
1248 | if (options && options->effective_url && options->base_url) { | |
1249 | if (update_url_from_redirect(options->base_url, | |
1250 | url, options->effective_url)) { | |
1251 | credential_from_url(&http_auth, options->base_url->buf); | |
1252 | url = options->effective_url->buf; | |
1253 | } | |
1254 | } | |
1255 | ||
1256 | if (ret != HTTP_REAUTH) | |
1257 | return ret; | |
1258 | ||
1259 | /* | |
1260 | * If we are using KEEP_ERROR, the previous request may have | |
1261 | * put cruft into our output stream; we should clear it out before | |
1262 | * making our next request. We only know how to do this for | |
1263 | * the strbuf case, but that is enough to satisfy current callers. | |
1264 | */ | |
1265 | if (options && options->keep_error) { | |
1266 | switch (target) { | |
1267 | case HTTP_REQUEST_STRBUF: | |
1268 | strbuf_reset(result); | |
1269 | break; | |
1270 | default: | |
1271 | die("BUG: HTTP_KEEP_ERROR is only supported with strbufs"); | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | credential_fill(&http_auth); | |
1276 | ||
1277 | return http_request(url, result, target, options); | |
1278 | } | |
1279 | ||
1280 | int http_get_strbuf(const char *url, | |
1281 | struct strbuf *result, | |
1282 | struct http_get_options *options) | |
1283 | { | |
1284 | return http_request_reauth(url, result, HTTP_REQUEST_STRBUF, options); | |
1285 | } | |
1286 | ||
1287 | /* | |
1288 | * Downloads a URL and stores the result in the given file. | |
1289 | * | |
1290 | * If a previous interrupted download is detected (i.e. a previous temporary | |
1291 | * file is still around) the download is resumed. | |
1292 | */ | |
1293 | static int http_get_file(const char *url, const char *filename, | |
1294 | struct http_get_options *options) | |
1295 | { | |
1296 | int ret; | |
1297 | struct strbuf tmpfile = STRBUF_INIT; | |
1298 | FILE *result; | |
1299 | ||
1300 | strbuf_addf(&tmpfile, "%s.temp", filename); | |
1301 | result = fopen(tmpfile.buf, "a"); | |
1302 | if (!result) { | |
1303 | error("Unable to open local file %s", tmpfile.buf); | |
1304 | ret = HTTP_ERROR; | |
1305 | goto cleanup; | |
1306 | } | |
1307 | ||
1308 | ret = http_request_reauth(url, result, HTTP_REQUEST_FILE, options); | |
1309 | fclose(result); | |
1310 | ||
1311 | if (ret == HTTP_OK && move_temp_to_file(tmpfile.buf, filename)) | |
1312 | ret = HTTP_ERROR; | |
1313 | cleanup: | |
1314 | strbuf_release(&tmpfile); | |
1315 | return ret; | |
1316 | } | |
1317 | ||
1318 | int http_fetch_ref(const char *base, struct ref *ref) | |
1319 | { | |
1320 | struct http_get_options options = {0}; | |
1321 | char *url; | |
1322 | struct strbuf buffer = STRBUF_INIT; | |
1323 | int ret = -1; | |
1324 | ||
1325 | options.no_cache = 1; | |
1326 | ||
1327 | url = quote_ref_url(base, ref->name); | |
1328 | if (http_get_strbuf(url, &buffer, &options) == HTTP_OK) { | |
1329 | strbuf_rtrim(&buffer); | |
1330 | if (buffer.len == 40) | |
1331 | ret = get_sha1_hex(buffer.buf, ref->old_sha1); | |
1332 | else if (starts_with(buffer.buf, "ref: ")) { | |
1333 | ref->symref = xstrdup(buffer.buf + 5); | |
1334 | ret = 0; | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | strbuf_release(&buffer); | |
1339 | free(url); | |
1340 | return ret; | |
1341 | } | |
1342 | ||
1343 | /* Helpers for fetching packs */ | |
1344 | static char *fetch_pack_index(unsigned char *sha1, const char *base_url) | |
1345 | { | |
1346 | char *url, *tmp; | |
1347 | struct strbuf buf = STRBUF_INIT; | |
1348 | ||
1349 | if (http_is_verbose) | |
1350 | fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1)); | |
1351 | ||
1352 | end_url_with_slash(&buf, base_url); | |
1353 | strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1)); | |
1354 | url = strbuf_detach(&buf, NULL); | |
1355 | ||
1356 | strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1)); | |
1357 | tmp = strbuf_detach(&buf, NULL); | |
1358 | ||
1359 | if (http_get_file(url, tmp, NULL) != HTTP_OK) { | |
1360 | error("Unable to get pack index %s", url); | |
1361 | free(tmp); | |
1362 | tmp = NULL; | |
1363 | } | |
1364 | ||
1365 | free(url); | |
1366 | return tmp; | |
1367 | } | |
1368 | ||
1369 | static int fetch_and_setup_pack_index(struct packed_git **packs_head, | |
1370 | unsigned char *sha1, const char *base_url) | |
1371 | { | |
1372 | struct packed_git *new_pack; | |
1373 | char *tmp_idx = NULL; | |
1374 | int ret; | |
1375 | ||
1376 | if (has_pack_index(sha1)) { | |
1377 | new_pack = parse_pack_index(sha1, sha1_pack_index_name(sha1)); | |
1378 | if (!new_pack) | |
1379 | return -1; /* parse_pack_index() already issued error message */ | |
1380 | goto add_pack; | |
1381 | } | |
1382 | ||
1383 | tmp_idx = fetch_pack_index(sha1, base_url); | |
1384 | if (!tmp_idx) | |
1385 | return -1; | |
1386 | ||
1387 | new_pack = parse_pack_index(sha1, tmp_idx); | |
1388 | if (!new_pack) { | |
1389 | unlink(tmp_idx); | |
1390 | free(tmp_idx); | |
1391 | ||
1392 | return -1; /* parse_pack_index() already issued error message */ | |
1393 | } | |
1394 | ||
1395 | ret = verify_pack_index(new_pack); | |
1396 | if (!ret) { | |
1397 | close_pack_index(new_pack); | |
1398 | ret = move_temp_to_file(tmp_idx, sha1_pack_index_name(sha1)); | |
1399 | } | |
1400 | free(tmp_idx); | |
1401 | if (ret) | |
1402 | return -1; | |
1403 | ||
1404 | add_pack: | |
1405 | new_pack->next = *packs_head; | |
1406 | *packs_head = new_pack; | |
1407 | return 0; | |
1408 | } | |
1409 | ||
1410 | int http_get_info_packs(const char *base_url, struct packed_git **packs_head) | |
1411 | { | |
1412 | struct http_get_options options = {0}; | |
1413 | int ret = 0, i = 0; | |
1414 | char *url, *data; | |
1415 | struct strbuf buf = STRBUF_INIT; | |
1416 | unsigned char sha1[20]; | |
1417 | ||
1418 | end_url_with_slash(&buf, base_url); | |
1419 | strbuf_addstr(&buf, "objects/info/packs"); | |
1420 | url = strbuf_detach(&buf, NULL); | |
1421 | ||
1422 | options.no_cache = 1; | |
1423 | ret = http_get_strbuf(url, &buf, &options); | |
1424 | if (ret != HTTP_OK) | |
1425 | goto cleanup; | |
1426 | ||
1427 | data = buf.buf; | |
1428 | while (i < buf.len) { | |
1429 | switch (data[i]) { | |
1430 | case 'P': | |
1431 | i++; | |
1432 | if (i + 52 <= buf.len && | |
1433 | starts_with(data + i, " pack-") && | |
1434 | starts_with(data + i + 46, ".pack\n")) { | |
1435 | get_sha1_hex(data + i + 6, sha1); | |
1436 | fetch_and_setup_pack_index(packs_head, sha1, | |
1437 | base_url); | |
1438 | i += 51; | |
1439 | break; | |
1440 | } | |
1441 | default: | |
1442 | while (i < buf.len && data[i] != '\n') | |
1443 | i++; | |
1444 | } | |
1445 | i++; | |
1446 | } | |
1447 | ||
1448 | cleanup: | |
1449 | free(url); | |
1450 | return ret; | |
1451 | } | |
1452 | ||
1453 | void release_http_pack_request(struct http_pack_request *preq) | |
1454 | { | |
1455 | if (preq->packfile != NULL) { | |
1456 | fclose(preq->packfile); | |
1457 | preq->packfile = NULL; | |
1458 | } | |
1459 | if (preq->range_header != NULL) { | |
1460 | curl_slist_free_all(preq->range_header); | |
1461 | preq->range_header = NULL; | |
1462 | } | |
1463 | preq->slot = NULL; | |
1464 | free(preq->url); | |
1465 | free(preq); | |
1466 | } | |
1467 | ||
1468 | int finish_http_pack_request(struct http_pack_request *preq) | |
1469 | { | |
1470 | struct packed_git **lst; | |
1471 | struct packed_git *p = preq->target; | |
1472 | char *tmp_idx; | |
1473 | struct child_process ip = CHILD_PROCESS_INIT; | |
1474 | const char *ip_argv[8]; | |
1475 | ||
1476 | close_pack_index(p); | |
1477 | ||
1478 | fclose(preq->packfile); | |
1479 | preq->packfile = NULL; | |
1480 | ||
1481 | lst = preq->lst; | |
1482 | while (*lst != p) | |
1483 | lst = &((*lst)->next); | |
1484 | *lst = (*lst)->next; | |
1485 | ||
1486 | tmp_idx = xstrdup(preq->tmpfile); | |
1487 | strcpy(tmp_idx + strlen(tmp_idx) - strlen(".pack.temp"), | |
1488 | ".idx.temp"); | |
1489 | ||
1490 | ip_argv[0] = "index-pack"; | |
1491 | ip_argv[1] = "-o"; | |
1492 | ip_argv[2] = tmp_idx; | |
1493 | ip_argv[3] = preq->tmpfile; | |
1494 | ip_argv[4] = NULL; | |
1495 | ||
1496 | ip.argv = ip_argv; | |
1497 | ip.git_cmd = 1; | |
1498 | ip.no_stdin = 1; | |
1499 | ip.no_stdout = 1; | |
1500 | ||
1501 | if (run_command(&ip)) { | |
1502 | unlink(preq->tmpfile); | |
1503 | unlink(tmp_idx); | |
1504 | free(tmp_idx); | |
1505 | return -1; | |
1506 | } | |
1507 | ||
1508 | unlink(sha1_pack_index_name(p->sha1)); | |
1509 | ||
1510 | if (move_temp_to_file(preq->tmpfile, sha1_pack_name(p->sha1)) | |
1511 | || move_temp_to_file(tmp_idx, sha1_pack_index_name(p->sha1))) { | |
1512 | free(tmp_idx); | |
1513 | return -1; | |
1514 | } | |
1515 | ||
1516 | install_packed_git(p); | |
1517 | free(tmp_idx); | |
1518 | return 0; | |
1519 | } | |
1520 | ||
1521 | struct http_pack_request *new_http_pack_request( | |
1522 | struct packed_git *target, const char *base_url) | |
1523 | { | |
1524 | long prev_posn = 0; | |
1525 | char range[RANGE_HEADER_SIZE]; | |
1526 | struct strbuf buf = STRBUF_INIT; | |
1527 | struct http_pack_request *preq; | |
1528 | ||
1529 | preq = xcalloc(1, sizeof(*preq)); | |
1530 | preq->target = target; | |
1531 | ||
1532 | end_url_with_slash(&buf, base_url); | |
1533 | strbuf_addf(&buf, "objects/pack/pack-%s.pack", | |
1534 | sha1_to_hex(target->sha1)); | |
1535 | preq->url = strbuf_detach(&buf, NULL); | |
1536 | ||
1537 | snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp", | |
1538 | sha1_pack_name(target->sha1)); | |
1539 | preq->packfile = fopen(preq->tmpfile, "a"); | |
1540 | if (!preq->packfile) { | |
1541 | error("Unable to open local file %s for pack", | |
1542 | preq->tmpfile); | |
1543 | goto abort; | |
1544 | } | |
1545 | ||
1546 | preq->slot = get_active_slot(); | |
1547 | curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile); | |
1548 | curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
1549 | curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url); | |
1550 | curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER, | |
1551 | no_pragma_header); | |
1552 | ||
1553 | /* | |
1554 | * If there is data present from a previous transfer attempt, | |
1555 | * resume where it left off | |
1556 | */ | |
1557 | prev_posn = ftell(preq->packfile); | |
1558 | if (prev_posn>0) { | |
1559 | if (http_is_verbose) | |
1560 | fprintf(stderr, | |
1561 | "Resuming fetch of pack %s at byte %ld\n", | |
1562 | sha1_to_hex(target->sha1), prev_posn); | |
1563 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
1564 | preq->range_header = curl_slist_append(NULL, range); | |
1565 | curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER, | |
1566 | preq->range_header); | |
1567 | } | |
1568 | ||
1569 | return preq; | |
1570 | ||
1571 | abort: | |
1572 | free(preq->url); | |
1573 | free(preq); | |
1574 | return NULL; | |
1575 | } | |
1576 | ||
1577 | /* Helpers for fetching objects (loose) */ | |
1578 | static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb, | |
1579 | void *data) | |
1580 | { | |
1581 | unsigned char expn[4096]; | |
1582 | size_t size = eltsize * nmemb; | |
1583 | int posn = 0; | |
1584 | struct http_object_request *freq = | |
1585 | (struct http_object_request *)data; | |
1586 | do { | |
1587 | ssize_t retval = xwrite(freq->localfile, | |
1588 | (char *) ptr + posn, size - posn); | |
1589 | if (retval < 0) | |
1590 | return posn; | |
1591 | posn += retval; | |
1592 | } while (posn < size); | |
1593 | ||
1594 | freq->stream.avail_in = size; | |
1595 | freq->stream.next_in = (void *)ptr; | |
1596 | do { | |
1597 | freq->stream.next_out = expn; | |
1598 | freq->stream.avail_out = sizeof(expn); | |
1599 | freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH); | |
1600 | git_SHA1_Update(&freq->c, expn, | |
1601 | sizeof(expn) - freq->stream.avail_out); | |
1602 | } while (freq->stream.avail_in && freq->zret == Z_OK); | |
1603 | return size; | |
1604 | } | |
1605 | ||
1606 | struct http_object_request *new_http_object_request(const char *base_url, | |
1607 | unsigned char *sha1) | |
1608 | { | |
1609 | char *hex = sha1_to_hex(sha1); | |
1610 | const char *filename; | |
1611 | char prevfile[PATH_MAX]; | |
1612 | int prevlocal; | |
1613 | char prev_buf[PREV_BUF_SIZE]; | |
1614 | ssize_t prev_read = 0; | |
1615 | long prev_posn = 0; | |
1616 | char range[RANGE_HEADER_SIZE]; | |
1617 | struct curl_slist *range_header = NULL; | |
1618 | struct http_object_request *freq; | |
1619 | ||
1620 | freq = xcalloc(1, sizeof(*freq)); | |
1621 | hashcpy(freq->sha1, sha1); | |
1622 | freq->localfile = -1; | |
1623 | ||
1624 | filename = sha1_file_name(sha1); | |
1625 | snprintf(freq->tmpfile, sizeof(freq->tmpfile), | |
1626 | "%s.temp", filename); | |
1627 | ||
1628 | snprintf(prevfile, sizeof(prevfile), "%s.prev", filename); | |
1629 | unlink_or_warn(prevfile); | |
1630 | rename(freq->tmpfile, prevfile); | |
1631 | unlink_or_warn(freq->tmpfile); | |
1632 | ||
1633 | if (freq->localfile != -1) | |
1634 | error("fd leakage in start: %d", freq->localfile); | |
1635 | freq->localfile = open(freq->tmpfile, | |
1636 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
1637 | /* | |
1638 | * This could have failed due to the "lazy directory creation"; | |
1639 | * try to mkdir the last path component. | |
1640 | */ | |
1641 | if (freq->localfile < 0 && errno == ENOENT) { | |
1642 | char *dir = strrchr(freq->tmpfile, '/'); | |
1643 | if (dir) { | |
1644 | *dir = 0; | |
1645 | mkdir(freq->tmpfile, 0777); | |
1646 | *dir = '/'; | |
1647 | } | |
1648 | freq->localfile = open(freq->tmpfile, | |
1649 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
1650 | } | |
1651 | ||
1652 | if (freq->localfile < 0) { | |
1653 | error("Couldn't create temporary file %s: %s", | |
1654 | freq->tmpfile, strerror(errno)); | |
1655 | goto abort; | |
1656 | } | |
1657 | ||
1658 | git_inflate_init(&freq->stream); | |
1659 | ||
1660 | git_SHA1_Init(&freq->c); | |
1661 | ||
1662 | freq->url = get_remote_object_url(base_url, hex, 0); | |
1663 | ||
1664 | /* | |
1665 | * If a previous temp file is present, process what was already | |
1666 | * fetched. | |
1667 | */ | |
1668 | prevlocal = open(prevfile, O_RDONLY); | |
1669 | if (prevlocal != -1) { | |
1670 | do { | |
1671 | prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE); | |
1672 | if (prev_read>0) { | |
1673 | if (fwrite_sha1_file(prev_buf, | |
1674 | 1, | |
1675 | prev_read, | |
1676 | freq) == prev_read) { | |
1677 | prev_posn += prev_read; | |
1678 | } else { | |
1679 | prev_read = -1; | |
1680 | } | |
1681 | } | |
1682 | } while (prev_read > 0); | |
1683 | close(prevlocal); | |
1684 | } | |
1685 | unlink_or_warn(prevfile); | |
1686 | ||
1687 | /* | |
1688 | * Reset inflate/SHA1 if there was an error reading the previous temp | |
1689 | * file; also rewind to the beginning of the local file. | |
1690 | */ | |
1691 | if (prev_read == -1) { | |
1692 | memset(&freq->stream, 0, sizeof(freq->stream)); | |
1693 | git_inflate_init(&freq->stream); | |
1694 | git_SHA1_Init(&freq->c); | |
1695 | if (prev_posn>0) { | |
1696 | prev_posn = 0; | |
1697 | lseek(freq->localfile, 0, SEEK_SET); | |
1698 | if (ftruncate(freq->localfile, 0) < 0) { | |
1699 | error("Couldn't truncate temporary file %s: %s", | |
1700 | freq->tmpfile, strerror(errno)); | |
1701 | goto abort; | |
1702 | } | |
1703 | } | |
1704 | } | |
1705 | ||
1706 | freq->slot = get_active_slot(); | |
1707 | ||
1708 | curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq); | |
1709 | curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); | |
1710 | curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr); | |
1711 | curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url); | |
1712 | curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); | |
1713 | ||
1714 | /* | |
1715 | * If we have successfully processed data from a previous fetch | |
1716 | * attempt, only fetch the data we don't already have. | |
1717 | */ | |
1718 | if (prev_posn>0) { | |
1719 | if (http_is_verbose) | |
1720 | fprintf(stderr, | |
1721 | "Resuming fetch of object %s at byte %ld\n", | |
1722 | hex, prev_posn); | |
1723 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
1724 | range_header = curl_slist_append(range_header, range); | |
1725 | curl_easy_setopt(freq->slot->curl, | |
1726 | CURLOPT_HTTPHEADER, range_header); | |
1727 | } | |
1728 | ||
1729 | return freq; | |
1730 | ||
1731 | abort: | |
1732 | free(freq->url); | |
1733 | free(freq); | |
1734 | return NULL; | |
1735 | } | |
1736 | ||
1737 | void process_http_object_request(struct http_object_request *freq) | |
1738 | { | |
1739 | if (freq->slot == NULL) | |
1740 | return; | |
1741 | freq->curl_result = freq->slot->curl_result; | |
1742 | freq->http_code = freq->slot->http_code; | |
1743 | freq->slot = NULL; | |
1744 | } | |
1745 | ||
1746 | int finish_http_object_request(struct http_object_request *freq) | |
1747 | { | |
1748 | struct stat st; | |
1749 | ||
1750 | close(freq->localfile); | |
1751 | freq->localfile = -1; | |
1752 | ||
1753 | process_http_object_request(freq); | |
1754 | ||
1755 | if (freq->http_code == 416) { | |
1756 | warning("requested range invalid; we may already have all the data."); | |
1757 | } else if (freq->curl_result != CURLE_OK) { | |
1758 | if (stat(freq->tmpfile, &st) == 0) | |
1759 | if (st.st_size == 0) | |
1760 | unlink_or_warn(freq->tmpfile); | |
1761 | return -1; | |
1762 | } | |
1763 | ||
1764 | git_inflate_end(&freq->stream); | |
1765 | git_SHA1_Final(freq->real_sha1, &freq->c); | |
1766 | if (freq->zret != Z_STREAM_END) { | |
1767 | unlink_or_warn(freq->tmpfile); | |
1768 | return -1; | |
1769 | } | |
1770 | if (hashcmp(freq->sha1, freq->real_sha1)) { | |
1771 | unlink_or_warn(freq->tmpfile); | |
1772 | return -1; | |
1773 | } | |
1774 | freq->rename = | |
1775 | move_temp_to_file(freq->tmpfile, sha1_file_name(freq->sha1)); | |
1776 | ||
1777 | return freq->rename; | |
1778 | } | |
1779 | ||
1780 | void abort_http_object_request(struct http_object_request *freq) | |
1781 | { | |
1782 | unlink_or_warn(freq->tmpfile); | |
1783 | ||
1784 | release_http_object_request(freq); | |
1785 | } | |
1786 | ||
1787 | void release_http_object_request(struct http_object_request *freq) | |
1788 | { | |
1789 | if (freq->localfile != -1) { | |
1790 | close(freq->localfile); | |
1791 | freq->localfile = -1; | |
1792 | } | |
1793 | if (freq->url != NULL) { | |
1794 | free(freq->url); | |
1795 | freq->url = NULL; | |
1796 | } | |
1797 | if (freq->slot != NULL) { | |
1798 | freq->slot->callback_func = NULL; | |
1799 | freq->slot->callback_data = NULL; | |
1800 | release_active_slot(freq->slot); | |
1801 | freq->slot = NULL; | |
1802 | } | |
1803 | } |