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Commit | Line | Data |
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29508e1e NH |
1 | #include "http.h" |
2 | ||
3 | int data_received; | |
4 | int active_requests = 0; | |
5 | ||
6 | #ifdef USE_CURL_MULTI | |
cc3530e8 MH |
7 | static int max_requests = -1; |
8 | static CURLM *curlm; | |
29508e1e NH |
9 | #endif |
10 | #ifndef NO_CURL_EASY_DUPHANDLE | |
cc3530e8 | 11 | static CURL *curl_default; |
29508e1e NH |
12 | #endif |
13 | char curl_errorstr[CURL_ERROR_SIZE]; | |
14 | ||
cc3530e8 | 15 | static int curl_ssl_verify = -1; |
7ef8ea70 | 16 | static const char *ssl_cert = NULL; |
29508e1e | 17 | #if LIBCURL_VERSION_NUM >= 0x070902 |
7ef8ea70 | 18 | static const char *ssl_key = NULL; |
29508e1e NH |
19 | #endif |
20 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
7ef8ea70 | 21 | static const char *ssl_capath = NULL; |
29508e1e | 22 | #endif |
7ef8ea70 | 23 | static const char *ssl_cainfo = NULL; |
cc3530e8 MH |
24 | static long curl_low_speed_limit = -1; |
25 | static long curl_low_speed_time = -1; | |
26 | static int curl_ftp_no_epsv = 0; | |
27 | static char *curl_http_proxy = NULL; | |
29508e1e | 28 | |
cc3530e8 | 29 | static struct curl_slist *pragma_header; |
29508e1e | 30 | |
cc3530e8 | 31 | static struct active_request_slot *active_queue_head = NULL; |
29508e1e | 32 | |
f444e528 | 33 | size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb, void *buffer_) |
29508e1e NH |
34 | { |
35 | size_t size = eltsize * nmemb; | |
f444e528 JH |
36 | struct buffer *buffer = buffer_; |
37 | ||
028c2976 MH |
38 | if (size > buffer->buf.len - buffer->posn) |
39 | size = buffer->buf.len - buffer->posn; | |
40 | memcpy(ptr, buffer->buf.buf + buffer->posn, size); | |
29508e1e | 41 | buffer->posn += size; |
028c2976 | 42 | |
29508e1e NH |
43 | return size; |
44 | } | |
45 | ||
f444e528 | 46 | size_t fwrite_buffer(const void *ptr, size_t eltsize, size_t nmemb, void *buffer_) |
29508e1e NH |
47 | { |
48 | size_t size = eltsize * nmemb; | |
f444e528 JH |
49 | struct strbuf *buffer = buffer_; |
50 | ||
028c2976 | 51 | strbuf_add(buffer, ptr, size); |
29508e1e NH |
52 | data_received++; |
53 | return size; | |
54 | } | |
55 | ||
f444e528 | 56 | size_t fwrite_null(const void *ptr, size_t eltsize, size_t nmemb, void *strbuf) |
29508e1e NH |
57 | { |
58 | data_received++; | |
59 | return eltsize * nmemb; | |
60 | } | |
61 | ||
62 | static void finish_active_slot(struct active_request_slot *slot); | |
63 | ||
64 | #ifdef USE_CURL_MULTI | |
65 | static void process_curl_messages(void) | |
66 | { | |
67 | int num_messages; | |
68 | struct active_request_slot *slot; | |
69 | CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages); | |
70 | ||
71 | while (curl_message != NULL) { | |
72 | if (curl_message->msg == CURLMSG_DONE) { | |
73 | int curl_result = curl_message->data.result; | |
74 | slot = active_queue_head; | |
75 | while (slot != NULL && | |
76 | slot->curl != curl_message->easy_handle) | |
77 | slot = slot->next; | |
78 | if (slot != NULL) { | |
79 | curl_multi_remove_handle(curlm, slot->curl); | |
80 | slot->curl_result = curl_result; | |
81 | finish_active_slot(slot); | |
82 | } else { | |
83 | fprintf(stderr, "Received DONE message for unknown request!\n"); | |
84 | } | |
85 | } else { | |
86 | fprintf(stderr, "Unknown CURL message received: %d\n", | |
87 | (int)curl_message->msg); | |
88 | } | |
89 | curl_message = curl_multi_info_read(curlm, &num_messages); | |
90 | } | |
91 | } | |
92 | #endif | |
93 | ||
ef90d6d4 | 94 | static int http_options(const char *var, const char *value, void *cb) |
29508e1e NH |
95 | { |
96 | if (!strcmp("http.sslverify", var)) { | |
97 | if (curl_ssl_verify == -1) { | |
98 | curl_ssl_verify = git_config_bool(var, value); | |
99 | } | |
100 | return 0; | |
101 | } | |
102 | ||
103 | if (!strcmp("http.sslcert", var)) { | |
7ef8ea70 BH |
104 | if (ssl_cert == NULL) |
105 | return git_config_string(&ssl_cert, var, value); | |
29508e1e NH |
106 | return 0; |
107 | } | |
108 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
109 | if (!strcmp("http.sslkey", var)) { | |
7ef8ea70 BH |
110 | if (ssl_key == NULL) |
111 | return git_config_string(&ssl_key, var, value); | |
29508e1e NH |
112 | return 0; |
113 | } | |
114 | #endif | |
115 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
116 | if (!strcmp("http.sslcapath", var)) { | |
7ef8ea70 BH |
117 | if (ssl_capath == NULL) |
118 | return git_config_string(&ssl_capath, var, value); | |
29508e1e NH |
119 | return 0; |
120 | } | |
121 | #endif | |
122 | if (!strcmp("http.sslcainfo", var)) { | |
7ef8ea70 BH |
123 | if (ssl_cainfo == NULL) |
124 | return git_config_string(&ssl_cainfo, var, value); | |
29508e1e NH |
125 | return 0; |
126 | } | |
127 | ||
a6080a0a | 128 | #ifdef USE_CURL_MULTI |
29508e1e NH |
129 | if (!strcmp("http.maxrequests", var)) { |
130 | if (max_requests == -1) | |
131 | max_requests = git_config_int(var, value); | |
132 | return 0; | |
133 | } | |
134 | #endif | |
135 | ||
136 | if (!strcmp("http.lowspeedlimit", var)) { | |
137 | if (curl_low_speed_limit == -1) | |
138 | curl_low_speed_limit = (long)git_config_int(var, value); | |
139 | return 0; | |
140 | } | |
141 | if (!strcmp("http.lowspeedtime", var)) { | |
142 | if (curl_low_speed_time == -1) | |
143 | curl_low_speed_time = (long)git_config_int(var, value); | |
144 | return 0; | |
145 | } | |
146 | ||
3ea099d4 SK |
147 | if (!strcmp("http.noepsv", var)) { |
148 | curl_ftp_no_epsv = git_config_bool(var, value); | |
149 | return 0; | |
150 | } | |
9c5665aa SV |
151 | if (!strcmp("http.proxy", var)) { |
152 | if (curl_http_proxy == NULL) { | |
111dd25f JH |
153 | if (!value) |
154 | return config_error_nonbool(var); | |
155 | curl_http_proxy = xstrdup(value); | |
9c5665aa SV |
156 | } |
157 | return 0; | |
158 | } | |
3ea099d4 | 159 | |
29508e1e | 160 | /* Fall back on the default ones */ |
ef90d6d4 | 161 | return git_default_config(var, value, cb); |
29508e1e NH |
162 | } |
163 | ||
11979b98 JH |
164 | static CURL* get_curl_handle(void) |
165 | { | |
166 | CURL* result = curl_easy_init(); | |
167 | ||
a5ccc597 JH |
168 | if (!curl_ssl_verify) { |
169 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0); | |
170 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0); | |
171 | } else { | |
172 | /* Verify authenticity of the peer's certificate */ | |
173 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1); | |
174 | /* The name in the cert must match whom we tried to connect */ | |
175 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2); | |
176 | } | |
177 | ||
11979b98 JH |
178 | #if LIBCURL_VERSION_NUM >= 0x070907 |
179 | curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL); | |
180 | #endif | |
181 | ||
182 | if (ssl_cert != NULL) | |
183 | curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert); | |
184 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
185 | if (ssl_key != NULL) | |
186 | curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key); | |
187 | #endif | |
188 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
189 | if (ssl_capath != NULL) | |
190 | curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath); | |
191 | #endif | |
192 | if (ssl_cainfo != NULL) | |
193 | curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo); | |
194 | curl_easy_setopt(result, CURLOPT_FAILONERROR, 1); | |
195 | ||
196 | if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) { | |
197 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT, | |
198 | curl_low_speed_limit); | |
199 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME, | |
200 | curl_low_speed_time); | |
201 | } | |
202 | ||
203 | curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1); | |
204 | ||
7982d74e MW |
205 | if (getenv("GIT_CURL_VERBOSE")) |
206 | curl_easy_setopt(result, CURLOPT_VERBOSE, 1); | |
207 | ||
20fc9bc5 NH |
208 | curl_easy_setopt(result, CURLOPT_USERAGENT, GIT_USER_AGENT); |
209 | ||
3ea099d4 SK |
210 | if (curl_ftp_no_epsv) |
211 | curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0); | |
212 | ||
9c5665aa SV |
213 | if (curl_http_proxy) |
214 | curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy); | |
215 | ||
11979b98 JH |
216 | return result; |
217 | } | |
218 | ||
9fc6440d | 219 | void http_init(struct remote *remote) |
29508e1e NH |
220 | { |
221 | char *low_speed_limit; | |
222 | char *low_speed_time; | |
223 | ||
224 | curl_global_init(CURL_GLOBAL_ALL); | |
225 | ||
9fc6440d MH |
226 | if (remote && remote->http_proxy) |
227 | curl_http_proxy = xstrdup(remote->http_proxy); | |
228 | ||
29508e1e | 229 | pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache"); |
29508e1e NH |
230 | |
231 | #ifdef USE_CURL_MULTI | |
232 | { | |
233 | char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS"); | |
234 | if (http_max_requests != NULL) | |
235 | max_requests = atoi(http_max_requests); | |
236 | } | |
237 | ||
238 | curlm = curl_multi_init(); | |
239 | if (curlm == NULL) { | |
240 | fprintf(stderr, "Error creating curl multi handle.\n"); | |
241 | exit(1); | |
242 | } | |
243 | #endif | |
244 | ||
245 | if (getenv("GIT_SSL_NO_VERIFY")) | |
246 | curl_ssl_verify = 0; | |
247 | ||
248 | ssl_cert = getenv("GIT_SSL_CERT"); | |
249 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
250 | ssl_key = getenv("GIT_SSL_KEY"); | |
251 | #endif | |
252 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
253 | ssl_capath = getenv("GIT_SSL_CAPATH"); | |
254 | #endif | |
255 | ssl_cainfo = getenv("GIT_SSL_CAINFO"); | |
256 | ||
257 | low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT"); | |
258 | if (low_speed_limit != NULL) | |
259 | curl_low_speed_limit = strtol(low_speed_limit, NULL, 10); | |
260 | low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME"); | |
261 | if (low_speed_time != NULL) | |
262 | curl_low_speed_time = strtol(low_speed_time, NULL, 10); | |
263 | ||
ef90d6d4 | 264 | git_config(http_options, NULL); |
29508e1e NH |
265 | |
266 | if (curl_ssl_verify == -1) | |
267 | curl_ssl_verify = 1; | |
268 | ||
269 | #ifdef USE_CURL_MULTI | |
270 | if (max_requests < 1) | |
271 | max_requests = DEFAULT_MAX_REQUESTS; | |
272 | #endif | |
273 | ||
3ea099d4 SK |
274 | if (getenv("GIT_CURL_FTP_NO_EPSV")) |
275 | curl_ftp_no_epsv = 1; | |
276 | ||
29508e1e NH |
277 | #ifndef NO_CURL_EASY_DUPHANDLE |
278 | curl_default = get_curl_handle(); | |
279 | #endif | |
280 | } | |
281 | ||
282 | void http_cleanup(void) | |
283 | { | |
284 | struct active_request_slot *slot = active_queue_head; | |
29508e1e NH |
285 | |
286 | while (slot != NULL) { | |
3278cd0a | 287 | struct active_request_slot *next = slot->next; |
f23d1f76 | 288 | if (slot->curl != NULL) { |
29508e1e | 289 | #ifdef USE_CURL_MULTI |
f23d1f76 | 290 | curl_multi_remove_handle(curlm, slot->curl); |
29508e1e | 291 | #endif |
29508e1e | 292 | curl_easy_cleanup(slot->curl); |
f23d1f76 | 293 | } |
3278cd0a SP |
294 | free(slot); |
295 | slot = next; | |
29508e1e | 296 | } |
3278cd0a | 297 | active_queue_head = NULL; |
29508e1e NH |
298 | |
299 | #ifndef NO_CURL_EASY_DUPHANDLE | |
300 | curl_easy_cleanup(curl_default); | |
301 | #endif | |
302 | ||
303 | #ifdef USE_CURL_MULTI | |
304 | curl_multi_cleanup(curlm); | |
305 | #endif | |
306 | curl_global_cleanup(); | |
b3ca4e4e NH |
307 | |
308 | curl_slist_free_all(pragma_header); | |
3278cd0a | 309 | pragma_header = NULL; |
9fc6440d MH |
310 | |
311 | if (curl_http_proxy) { | |
312 | free(curl_http_proxy); | |
313 | curl_http_proxy = NULL; | |
314 | } | |
29508e1e NH |
315 | } |
316 | ||
29508e1e NH |
317 | struct active_request_slot *get_active_slot(void) |
318 | { | |
319 | struct active_request_slot *slot = active_queue_head; | |
320 | struct active_request_slot *newslot; | |
321 | ||
322 | #ifdef USE_CURL_MULTI | |
323 | int num_transfers; | |
324 | ||
325 | /* Wait for a slot to open up if the queue is full */ | |
326 | while (active_requests >= max_requests) { | |
327 | curl_multi_perform(curlm, &num_transfers); | |
328 | if (num_transfers < active_requests) { | |
329 | process_curl_messages(); | |
330 | } | |
331 | } | |
332 | #endif | |
333 | ||
334 | while (slot != NULL && slot->in_use) { | |
335 | slot = slot->next; | |
336 | } | |
337 | if (slot == NULL) { | |
338 | newslot = xmalloc(sizeof(*newslot)); | |
339 | newslot->curl = NULL; | |
340 | newslot->in_use = 0; | |
341 | newslot->next = NULL; | |
342 | ||
343 | slot = active_queue_head; | |
344 | if (slot == NULL) { | |
345 | active_queue_head = newslot; | |
346 | } else { | |
347 | while (slot->next != NULL) { | |
348 | slot = slot->next; | |
349 | } | |
350 | slot->next = newslot; | |
351 | } | |
352 | slot = newslot; | |
353 | } | |
354 | ||
355 | if (slot->curl == NULL) { | |
356 | #ifdef NO_CURL_EASY_DUPHANDLE | |
357 | slot->curl = get_curl_handle(); | |
358 | #else | |
359 | slot->curl = curl_easy_duphandle(curl_default); | |
360 | #endif | |
361 | } | |
362 | ||
363 | active_requests++; | |
364 | slot->in_use = 1; | |
365 | slot->local = NULL; | |
c8568e13 | 366 | slot->results = NULL; |
baa7b67d | 367 | slot->finished = NULL; |
29508e1e NH |
368 | slot->callback_data = NULL; |
369 | slot->callback_func = NULL; | |
370 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header); | |
29508e1e | 371 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr); |
9094950d NH |
372 | curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL); |
373 | curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL); | |
374 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL); | |
375 | curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0); | |
376 | curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); | |
29508e1e NH |
377 | |
378 | return slot; | |
379 | } | |
380 | ||
381 | int start_active_slot(struct active_request_slot *slot) | |
382 | { | |
383 | #ifdef USE_CURL_MULTI | |
384 | CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl); | |
45c17412 | 385 | int num_transfers; |
29508e1e NH |
386 | |
387 | if (curlm_result != CURLM_OK && | |
388 | curlm_result != CURLM_CALL_MULTI_PERFORM) { | |
389 | active_requests--; | |
390 | slot->in_use = 0; | |
391 | return 0; | |
392 | } | |
45c17412 DB |
393 | |
394 | /* | |
395 | * We know there must be something to do, since we just added | |
396 | * something. | |
397 | */ | |
398 | curl_multi_perform(curlm, &num_transfers); | |
29508e1e NH |
399 | #endif |
400 | return 1; | |
401 | } | |
402 | ||
403 | #ifdef USE_CURL_MULTI | |
fc57b6aa DB |
404 | struct fill_chain { |
405 | void *data; | |
406 | int (*fill)(void *); | |
407 | struct fill_chain *next; | |
408 | }; | |
409 | ||
410 | static struct fill_chain *fill_cfg = NULL; | |
411 | ||
412 | void add_fill_function(void *data, int (*fill)(void *)) | |
413 | { | |
414 | struct fill_chain *new = malloc(sizeof(*new)); | |
415 | struct fill_chain **linkp = &fill_cfg; | |
416 | new->data = data; | |
417 | new->fill = fill; | |
418 | new->next = NULL; | |
419 | while (*linkp) | |
420 | linkp = &(*linkp)->next; | |
421 | *linkp = new; | |
422 | } | |
423 | ||
45c17412 DB |
424 | void fill_active_slots(void) |
425 | { | |
426 | struct active_request_slot *slot = active_queue_head; | |
427 | ||
fc57b6aa DB |
428 | while (active_requests < max_requests) { |
429 | struct fill_chain *fill; | |
430 | for (fill = fill_cfg; fill; fill = fill->next) | |
431 | if (fill->fill(fill->data)) | |
432 | break; | |
433 | ||
434 | if (!fill) | |
45c17412 | 435 | break; |
fc57b6aa | 436 | } |
45c17412 DB |
437 | |
438 | while (slot != NULL) { | |
439 | if (!slot->in_use && slot->curl != NULL) { | |
440 | curl_easy_cleanup(slot->curl); | |
441 | slot->curl = NULL; | |
442 | } | |
443 | slot = slot->next; | |
444 | } | |
445 | } | |
446 | ||
29508e1e NH |
447 | void step_active_slots(void) |
448 | { | |
449 | int num_transfers; | |
450 | CURLMcode curlm_result; | |
451 | ||
452 | do { | |
453 | curlm_result = curl_multi_perform(curlm, &num_transfers); | |
454 | } while (curlm_result == CURLM_CALL_MULTI_PERFORM); | |
455 | if (num_transfers < active_requests) { | |
456 | process_curl_messages(); | |
457 | fill_active_slots(); | |
458 | } | |
459 | } | |
460 | #endif | |
461 | ||
462 | void run_active_slot(struct active_request_slot *slot) | |
463 | { | |
464 | #ifdef USE_CURL_MULTI | |
465 | long last_pos = 0; | |
466 | long current_pos; | |
467 | fd_set readfds; | |
468 | fd_set writefds; | |
469 | fd_set excfds; | |
470 | int max_fd; | |
471 | struct timeval select_timeout; | |
baa7b67d | 472 | int finished = 0; |
29508e1e | 473 | |
baa7b67d NH |
474 | slot->finished = &finished; |
475 | while (!finished) { | |
29508e1e NH |
476 | data_received = 0; |
477 | step_active_slots(); | |
478 | ||
479 | if (!data_received && slot->local != NULL) { | |
480 | current_pos = ftell(slot->local); | |
481 | if (current_pos > last_pos) | |
482 | data_received++; | |
483 | last_pos = current_pos; | |
484 | } | |
485 | ||
486 | if (slot->in_use && !data_received) { | |
487 | max_fd = 0; | |
488 | FD_ZERO(&readfds); | |
489 | FD_ZERO(&writefds); | |
490 | FD_ZERO(&excfds); | |
491 | select_timeout.tv_sec = 0; | |
492 | select_timeout.tv_usec = 50000; | |
493 | select(max_fd, &readfds, &writefds, | |
494 | &excfds, &select_timeout); | |
495 | } | |
496 | } | |
497 | #else | |
498 | while (slot->in_use) { | |
499 | slot->curl_result = curl_easy_perform(slot->curl); | |
500 | finish_active_slot(slot); | |
501 | } | |
502 | #endif | |
503 | } | |
504 | ||
53f31389 | 505 | static void closedown_active_slot(struct active_request_slot *slot) |
29508e1e | 506 | { |
028c2976 MH |
507 | active_requests--; |
508 | slot->in_use = 0; | |
53f31389 MW |
509 | } |
510 | ||
511 | void release_active_slot(struct active_request_slot *slot) | |
512 | { | |
513 | closedown_active_slot(slot); | |
514 | if (slot->curl) { | |
b3ca4e4e | 515 | #ifdef USE_CURL_MULTI |
53f31389 | 516 | curl_multi_remove_handle(curlm, slot->curl); |
b3ca4e4e | 517 | #endif |
53f31389 MW |
518 | curl_easy_cleanup(slot->curl); |
519 | slot->curl = NULL; | |
520 | } | |
b3ca4e4e | 521 | #ifdef USE_CURL_MULTI |
53f31389 | 522 | fill_active_slots(); |
b3ca4e4e | 523 | #endif |
53f31389 MW |
524 | } |
525 | ||
526 | static void finish_active_slot(struct active_request_slot *slot) | |
527 | { | |
528 | closedown_active_slot(slot); | |
028c2976 | 529 | curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code); |
c8568e13 | 530 | |
baa7b67d NH |
531 | if (slot->finished != NULL) |
532 | (*slot->finished) = 1; | |
533 | ||
c8568e13 NH |
534 | /* Store slot results so they can be read after the slot is reused */ |
535 | if (slot->results != NULL) { | |
536 | slot->results->curl_result = slot->curl_result; | |
537 | slot->results->http_code = slot->http_code; | |
538 | } | |
539 | ||
028c2976 MH |
540 | /* Run callback if appropriate */ |
541 | if (slot->callback_func != NULL) { | |
542 | slot->callback_func(slot->callback_data); | |
543 | } | |
29508e1e NH |
544 | } |
545 | ||
546 | void finish_all_active_slots(void) | |
547 | { | |
548 | struct active_request_slot *slot = active_queue_head; | |
549 | ||
550 | while (slot != NULL) | |
551 | if (slot->in_use) { | |
552 | run_active_slot(slot); | |
553 | slot = active_queue_head; | |
554 | } else { | |
555 | slot = slot->next; | |
556 | } | |
557 | } | |
d7e92806 MH |
558 | |
559 | static inline int needs_quote(int ch) | |
560 | { | |
561 | if (((ch >= 'A') && (ch <= 'Z')) | |
562 | || ((ch >= 'a') && (ch <= 'z')) | |
563 | || ((ch >= '0') && (ch <= '9')) | |
564 | || (ch == '/') | |
565 | || (ch == '-') | |
566 | || (ch == '.')) | |
567 | return 0; | |
568 | return 1; | |
569 | } | |
570 | ||
571 | static inline int hex(int v) | |
572 | { | |
573 | if (v < 10) return '0' + v; | |
574 | else return 'A' + v - 10; | |
575 | } | |
576 | ||
577 | static char *quote_ref_url(const char *base, const char *ref) | |
578 | { | |
579 | const char *cp; | |
580 | char *dp, *qref; | |
581 | int len, baselen, ch; | |
582 | ||
583 | baselen = strlen(base); | |
7c1a9e79 | 584 | len = baselen + 2; /* '/' after base and terminating NUL */ |
d7e92806 MH |
585 | for (cp = ref; (ch = *cp) != 0; cp++, len++) |
586 | if (needs_quote(ch)) | |
587 | len += 2; /* extra two hex plus replacement % */ | |
588 | qref = xmalloc(len); | |
589 | memcpy(qref, base, baselen); | |
c13b2633 DB |
590 | dp = qref + baselen; |
591 | *(dp++) = '/'; | |
592 | for (cp = ref; (ch = *cp) != 0; cp++) { | |
d7e92806 MH |
593 | if (needs_quote(ch)) { |
594 | *dp++ = '%'; | |
595 | *dp++ = hex((ch >> 4) & 0xF); | |
596 | *dp++ = hex(ch & 0xF); | |
597 | } | |
598 | else | |
599 | *dp++ = ch; | |
600 | } | |
601 | *dp = 0; | |
602 | ||
603 | return qref; | |
604 | } | |
605 | ||
c13b2633 | 606 | int http_fetch_ref(const char *base, struct ref *ref) |
d7e92806 MH |
607 | { |
608 | char *url; | |
609 | struct strbuf buffer = STRBUF_INIT; | |
610 | struct active_request_slot *slot; | |
611 | struct slot_results results; | |
612 | int ret; | |
613 | ||
c13b2633 | 614 | url = quote_ref_url(base, ref->name); |
d7e92806 MH |
615 | slot = get_active_slot(); |
616 | slot->results = &results; | |
617 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
618 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
619 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
620 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
621 | if (start_active_slot(slot)) { | |
622 | run_active_slot(slot); | |
623 | if (results.curl_result == CURLE_OK) { | |
624 | strbuf_rtrim(&buffer); | |
625 | if (buffer.len == 40) | |
c13b2633 | 626 | ret = get_sha1_hex(buffer.buf, ref->old_sha1); |
be885d96 DB |
627 | else if (!prefixcmp(buffer.buf, "ref: ")) { |
628 | ref->symref = xstrdup(buffer.buf + 5); | |
629 | ret = 0; | |
630 | } else | |
d7e92806 MH |
631 | ret = 1; |
632 | } else { | |
633 | ret = error("Couldn't get %s for %s\n%s", | |
c13b2633 | 634 | url, ref->name, curl_errorstr); |
d7e92806 MH |
635 | } |
636 | } else { | |
637 | ret = error("Unable to start request"); | |
638 | } | |
639 | ||
640 | strbuf_release(&buffer); | |
641 | free(url); | |
642 | return ret; | |
643 | } |