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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 MH |
15 | static int curl_ssl_verify = -1; |
16 | static char *ssl_cert = NULL; | |
29508e1e | 17 | #if LIBCURL_VERSION_NUM >= 0x070902 |
cc3530e8 | 18 | static char *ssl_key = NULL; |
29508e1e NH |
19 | #endif |
20 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
cc3530e8 | 21 | static char *ssl_capath = NULL; |
29508e1e | 22 | #endif |
cc3530e8 MH |
23 | static char *ssl_cainfo = NULL; |
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 NH |
32 | |
33 | size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb, | |
34 | struct buffer *buffer) | |
35 | { | |
36 | size_t size = eltsize * nmemb; | |
028c2976 MH |
37 | if (size > buffer->buf.len - buffer->posn) |
38 | size = buffer->buf.len - buffer->posn; | |
39 | memcpy(ptr, buffer->buf.buf + buffer->posn, size); | |
29508e1e | 40 | buffer->posn += size; |
028c2976 | 41 | |
29508e1e NH |
42 | return size; |
43 | } | |
44 | ||
45 | size_t fwrite_buffer(const void *ptr, size_t eltsize, | |
028c2976 | 46 | size_t nmemb, struct strbuf *buffer) |
29508e1e NH |
47 | { |
48 | size_t size = eltsize * nmemb; | |
028c2976 | 49 | strbuf_add(buffer, ptr, size); |
29508e1e NH |
50 | data_received++; |
51 | return size; | |
52 | } | |
53 | ||
54 | size_t fwrite_null(const void *ptr, size_t eltsize, | |
028c2976 | 55 | size_t nmemb, struct strbuf *buffer) |
29508e1e NH |
56 | { |
57 | data_received++; | |
58 | return eltsize * nmemb; | |
59 | } | |
60 | ||
61 | static void finish_active_slot(struct active_request_slot *slot); | |
62 | ||
63 | #ifdef USE_CURL_MULTI | |
64 | static void process_curl_messages(void) | |
65 | { | |
66 | int num_messages; | |
67 | struct active_request_slot *slot; | |
68 | CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages); | |
69 | ||
70 | while (curl_message != NULL) { | |
71 | if (curl_message->msg == CURLMSG_DONE) { | |
72 | int curl_result = curl_message->data.result; | |
73 | slot = active_queue_head; | |
74 | while (slot != NULL && | |
75 | slot->curl != curl_message->easy_handle) | |
76 | slot = slot->next; | |
77 | if (slot != NULL) { | |
78 | curl_multi_remove_handle(curlm, slot->curl); | |
79 | slot->curl_result = curl_result; | |
80 | finish_active_slot(slot); | |
81 | } else { | |
82 | fprintf(stderr, "Received DONE message for unknown request!\n"); | |
83 | } | |
84 | } else { | |
85 | fprintf(stderr, "Unknown CURL message received: %d\n", | |
86 | (int)curl_message->msg); | |
87 | } | |
88 | curl_message = curl_multi_info_read(curlm, &num_messages); | |
89 | } | |
90 | } | |
91 | #endif | |
92 | ||
ef90d6d4 | 93 | static int http_options(const char *var, const char *value, void *cb) |
29508e1e NH |
94 | { |
95 | if (!strcmp("http.sslverify", var)) { | |
96 | if (curl_ssl_verify == -1) { | |
97 | curl_ssl_verify = git_config_bool(var, value); | |
98 | } | |
99 | return 0; | |
100 | } | |
101 | ||
102 | if (!strcmp("http.sslcert", var)) { | |
103 | if (ssl_cert == NULL) { | |
111dd25f JH |
104 | if (!value) |
105 | return config_error_nonbool(var); | |
106 | ssl_cert = xstrdup(value); | |
29508e1e NH |
107 | } |
108 | return 0; | |
109 | } | |
110 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
111 | if (!strcmp("http.sslkey", var)) { | |
112 | if (ssl_key == NULL) { | |
111dd25f JH |
113 | if (!value) |
114 | return config_error_nonbool(var); | |
115 | ssl_key = xstrdup(value); | |
29508e1e NH |
116 | } |
117 | return 0; | |
118 | } | |
119 | #endif | |
120 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
121 | if (!strcmp("http.sslcapath", var)) { | |
122 | if (ssl_capath == NULL) { | |
111dd25f JH |
123 | if (!value) |
124 | return config_error_nonbool(var); | |
125 | ssl_capath = xstrdup(value); | |
29508e1e NH |
126 | } |
127 | return 0; | |
128 | } | |
129 | #endif | |
130 | if (!strcmp("http.sslcainfo", var)) { | |
131 | if (ssl_cainfo == NULL) { | |
111dd25f JH |
132 | if (!value) |
133 | return config_error_nonbool(var); | |
134 | ssl_cainfo = xstrdup(value); | |
29508e1e NH |
135 | } |
136 | return 0; | |
137 | } | |
138 | ||
a6080a0a | 139 | #ifdef USE_CURL_MULTI |
29508e1e NH |
140 | if (!strcmp("http.maxrequests", var)) { |
141 | if (max_requests == -1) | |
142 | max_requests = git_config_int(var, value); | |
143 | return 0; | |
144 | } | |
145 | #endif | |
146 | ||
147 | if (!strcmp("http.lowspeedlimit", var)) { | |
148 | if (curl_low_speed_limit == -1) | |
149 | curl_low_speed_limit = (long)git_config_int(var, value); | |
150 | return 0; | |
151 | } | |
152 | if (!strcmp("http.lowspeedtime", var)) { | |
153 | if (curl_low_speed_time == -1) | |
154 | curl_low_speed_time = (long)git_config_int(var, value); | |
155 | return 0; | |
156 | } | |
157 | ||
3ea099d4 SK |
158 | if (!strcmp("http.noepsv", var)) { |
159 | curl_ftp_no_epsv = git_config_bool(var, value); | |
160 | return 0; | |
161 | } | |
9c5665aa SV |
162 | if (!strcmp("http.proxy", var)) { |
163 | if (curl_http_proxy == NULL) { | |
111dd25f JH |
164 | if (!value) |
165 | return config_error_nonbool(var); | |
166 | curl_http_proxy = xstrdup(value); | |
9c5665aa SV |
167 | } |
168 | return 0; | |
169 | } | |
3ea099d4 | 170 | |
29508e1e | 171 | /* Fall back on the default ones */ |
ef90d6d4 | 172 | return git_default_config(var, value, cb); |
29508e1e NH |
173 | } |
174 | ||
11979b98 JH |
175 | static CURL* get_curl_handle(void) |
176 | { | |
177 | CURL* result = curl_easy_init(); | |
178 | ||
179 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, curl_ssl_verify); | |
180 | #if LIBCURL_VERSION_NUM >= 0x070907 | |
181 | curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL); | |
182 | #endif | |
183 | ||
184 | if (ssl_cert != NULL) | |
185 | curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert); | |
186 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
187 | if (ssl_key != NULL) | |
188 | curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key); | |
189 | #endif | |
190 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
191 | if (ssl_capath != NULL) | |
192 | curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath); | |
193 | #endif | |
194 | if (ssl_cainfo != NULL) | |
195 | curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo); | |
196 | curl_easy_setopt(result, CURLOPT_FAILONERROR, 1); | |
197 | ||
198 | if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) { | |
199 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT, | |
200 | curl_low_speed_limit); | |
201 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME, | |
202 | curl_low_speed_time); | |
203 | } | |
204 | ||
205 | curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1); | |
206 | ||
7982d74e MW |
207 | if (getenv("GIT_CURL_VERBOSE")) |
208 | curl_easy_setopt(result, CURLOPT_VERBOSE, 1); | |
209 | ||
20fc9bc5 NH |
210 | curl_easy_setopt(result, CURLOPT_USERAGENT, GIT_USER_AGENT); |
211 | ||
3ea099d4 SK |
212 | if (curl_ftp_no_epsv) |
213 | curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0); | |
214 | ||
9c5665aa SV |
215 | if (curl_http_proxy) |
216 | curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy); | |
217 | ||
11979b98 JH |
218 | return result; |
219 | } | |
220 | ||
9fc6440d | 221 | void http_init(struct remote *remote) |
29508e1e NH |
222 | { |
223 | char *low_speed_limit; | |
224 | char *low_speed_time; | |
225 | ||
226 | curl_global_init(CURL_GLOBAL_ALL); | |
227 | ||
9fc6440d MH |
228 | if (remote && remote->http_proxy) |
229 | curl_http_proxy = xstrdup(remote->http_proxy); | |
230 | ||
29508e1e | 231 | pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache"); |
29508e1e NH |
232 | |
233 | #ifdef USE_CURL_MULTI | |
234 | { | |
235 | char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS"); | |
236 | if (http_max_requests != NULL) | |
237 | max_requests = atoi(http_max_requests); | |
238 | } | |
239 | ||
240 | curlm = curl_multi_init(); | |
241 | if (curlm == NULL) { | |
242 | fprintf(stderr, "Error creating curl multi handle.\n"); | |
243 | exit(1); | |
244 | } | |
245 | #endif | |
246 | ||
247 | if (getenv("GIT_SSL_NO_VERIFY")) | |
248 | curl_ssl_verify = 0; | |
249 | ||
250 | ssl_cert = getenv("GIT_SSL_CERT"); | |
251 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
252 | ssl_key = getenv("GIT_SSL_KEY"); | |
253 | #endif | |
254 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
255 | ssl_capath = getenv("GIT_SSL_CAPATH"); | |
256 | #endif | |
257 | ssl_cainfo = getenv("GIT_SSL_CAINFO"); | |
258 | ||
259 | low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT"); | |
260 | if (low_speed_limit != NULL) | |
261 | curl_low_speed_limit = strtol(low_speed_limit, NULL, 10); | |
262 | low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME"); | |
263 | if (low_speed_time != NULL) | |
264 | curl_low_speed_time = strtol(low_speed_time, NULL, 10); | |
265 | ||
ef90d6d4 | 266 | git_config(http_options, NULL); |
29508e1e NH |
267 | |
268 | if (curl_ssl_verify == -1) | |
269 | curl_ssl_verify = 1; | |
270 | ||
271 | #ifdef USE_CURL_MULTI | |
272 | if (max_requests < 1) | |
273 | max_requests = DEFAULT_MAX_REQUESTS; | |
274 | #endif | |
275 | ||
3ea099d4 SK |
276 | if (getenv("GIT_CURL_FTP_NO_EPSV")) |
277 | curl_ftp_no_epsv = 1; | |
278 | ||
29508e1e NH |
279 | #ifndef NO_CURL_EASY_DUPHANDLE |
280 | curl_default = get_curl_handle(); | |
281 | #endif | |
282 | } | |
283 | ||
284 | void http_cleanup(void) | |
285 | { | |
286 | struct active_request_slot *slot = active_queue_head; | |
29508e1e NH |
287 | |
288 | while (slot != NULL) { | |
3278cd0a | 289 | struct active_request_slot *next = slot->next; |
f23d1f76 | 290 | if (slot->curl != NULL) { |
29508e1e | 291 | #ifdef USE_CURL_MULTI |
f23d1f76 | 292 | curl_multi_remove_handle(curlm, slot->curl); |
29508e1e | 293 | #endif |
29508e1e | 294 | curl_easy_cleanup(slot->curl); |
f23d1f76 | 295 | } |
3278cd0a SP |
296 | free(slot); |
297 | slot = next; | |
29508e1e | 298 | } |
3278cd0a | 299 | active_queue_head = NULL; |
29508e1e NH |
300 | |
301 | #ifndef NO_CURL_EASY_DUPHANDLE | |
302 | curl_easy_cleanup(curl_default); | |
303 | #endif | |
304 | ||
305 | #ifdef USE_CURL_MULTI | |
306 | curl_multi_cleanup(curlm); | |
307 | #endif | |
308 | curl_global_cleanup(); | |
b3ca4e4e NH |
309 | |
310 | curl_slist_free_all(pragma_header); | |
3278cd0a | 311 | pragma_header = NULL; |
9fc6440d MH |
312 | |
313 | if (curl_http_proxy) { | |
314 | free(curl_http_proxy); | |
315 | curl_http_proxy = NULL; | |
316 | } | |
29508e1e NH |
317 | } |
318 | ||
29508e1e NH |
319 | struct active_request_slot *get_active_slot(void) |
320 | { | |
321 | struct active_request_slot *slot = active_queue_head; | |
322 | struct active_request_slot *newslot; | |
323 | ||
324 | #ifdef USE_CURL_MULTI | |
325 | int num_transfers; | |
326 | ||
327 | /* Wait for a slot to open up if the queue is full */ | |
328 | while (active_requests >= max_requests) { | |
329 | curl_multi_perform(curlm, &num_transfers); | |
330 | if (num_transfers < active_requests) { | |
331 | process_curl_messages(); | |
332 | } | |
333 | } | |
334 | #endif | |
335 | ||
336 | while (slot != NULL && slot->in_use) { | |
337 | slot = slot->next; | |
338 | } | |
339 | if (slot == NULL) { | |
340 | newslot = xmalloc(sizeof(*newslot)); | |
341 | newslot->curl = NULL; | |
342 | newslot->in_use = 0; | |
343 | newslot->next = NULL; | |
344 | ||
345 | slot = active_queue_head; | |
346 | if (slot == NULL) { | |
347 | active_queue_head = newslot; | |
348 | } else { | |
349 | while (slot->next != NULL) { | |
350 | slot = slot->next; | |
351 | } | |
352 | slot->next = newslot; | |
353 | } | |
354 | slot = newslot; | |
355 | } | |
356 | ||
357 | if (slot->curl == NULL) { | |
358 | #ifdef NO_CURL_EASY_DUPHANDLE | |
359 | slot->curl = get_curl_handle(); | |
360 | #else | |
361 | slot->curl = curl_easy_duphandle(curl_default); | |
362 | #endif | |
363 | } | |
364 | ||
365 | active_requests++; | |
366 | slot->in_use = 1; | |
367 | slot->local = NULL; | |
c8568e13 | 368 | slot->results = NULL; |
baa7b67d | 369 | slot->finished = NULL; |
29508e1e NH |
370 | slot->callback_data = NULL; |
371 | slot->callback_func = NULL; | |
372 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header); | |
29508e1e | 373 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr); |
9094950d NH |
374 | curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL); |
375 | curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL); | |
376 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL); | |
377 | curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0); | |
378 | curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); | |
29508e1e NH |
379 | |
380 | return slot; | |
381 | } | |
382 | ||
383 | int start_active_slot(struct active_request_slot *slot) | |
384 | { | |
385 | #ifdef USE_CURL_MULTI | |
386 | CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl); | |
45c17412 | 387 | int num_transfers; |
29508e1e NH |
388 | |
389 | if (curlm_result != CURLM_OK && | |
390 | curlm_result != CURLM_CALL_MULTI_PERFORM) { | |
391 | active_requests--; | |
392 | slot->in_use = 0; | |
393 | return 0; | |
394 | } | |
45c17412 DB |
395 | |
396 | /* | |
397 | * We know there must be something to do, since we just added | |
398 | * something. | |
399 | */ | |
400 | curl_multi_perform(curlm, &num_transfers); | |
29508e1e NH |
401 | #endif |
402 | return 1; | |
403 | } | |
404 | ||
405 | #ifdef USE_CURL_MULTI | |
fc57b6aa DB |
406 | struct fill_chain { |
407 | void *data; | |
408 | int (*fill)(void *); | |
409 | struct fill_chain *next; | |
410 | }; | |
411 | ||
412 | static struct fill_chain *fill_cfg = NULL; | |
413 | ||
414 | void add_fill_function(void *data, int (*fill)(void *)) | |
415 | { | |
416 | struct fill_chain *new = malloc(sizeof(*new)); | |
417 | struct fill_chain **linkp = &fill_cfg; | |
418 | new->data = data; | |
419 | new->fill = fill; | |
420 | new->next = NULL; | |
421 | while (*linkp) | |
422 | linkp = &(*linkp)->next; | |
423 | *linkp = new; | |
424 | } | |
425 | ||
45c17412 DB |
426 | void fill_active_slots(void) |
427 | { | |
428 | struct active_request_slot *slot = active_queue_head; | |
429 | ||
fc57b6aa DB |
430 | while (active_requests < max_requests) { |
431 | struct fill_chain *fill; | |
432 | for (fill = fill_cfg; fill; fill = fill->next) | |
433 | if (fill->fill(fill->data)) | |
434 | break; | |
435 | ||
436 | if (!fill) | |
45c17412 | 437 | break; |
fc57b6aa | 438 | } |
45c17412 DB |
439 | |
440 | while (slot != NULL) { | |
441 | if (!slot->in_use && slot->curl != NULL) { | |
442 | curl_easy_cleanup(slot->curl); | |
443 | slot->curl = NULL; | |
444 | } | |
445 | slot = slot->next; | |
446 | } | |
447 | } | |
448 | ||
29508e1e NH |
449 | void step_active_slots(void) |
450 | { | |
451 | int num_transfers; | |
452 | CURLMcode curlm_result; | |
453 | ||
454 | do { | |
455 | curlm_result = curl_multi_perform(curlm, &num_transfers); | |
456 | } while (curlm_result == CURLM_CALL_MULTI_PERFORM); | |
457 | if (num_transfers < active_requests) { | |
458 | process_curl_messages(); | |
459 | fill_active_slots(); | |
460 | } | |
461 | } | |
462 | #endif | |
463 | ||
464 | void run_active_slot(struct active_request_slot *slot) | |
465 | { | |
466 | #ifdef USE_CURL_MULTI | |
467 | long last_pos = 0; | |
468 | long current_pos; | |
469 | fd_set readfds; | |
470 | fd_set writefds; | |
471 | fd_set excfds; | |
472 | int max_fd; | |
473 | struct timeval select_timeout; | |
baa7b67d | 474 | int finished = 0; |
29508e1e | 475 | |
baa7b67d NH |
476 | slot->finished = &finished; |
477 | while (!finished) { | |
29508e1e NH |
478 | data_received = 0; |
479 | step_active_slots(); | |
480 | ||
481 | if (!data_received && slot->local != NULL) { | |
482 | current_pos = ftell(slot->local); | |
483 | if (current_pos > last_pos) | |
484 | data_received++; | |
485 | last_pos = current_pos; | |
486 | } | |
487 | ||
488 | if (slot->in_use && !data_received) { | |
489 | max_fd = 0; | |
490 | FD_ZERO(&readfds); | |
491 | FD_ZERO(&writefds); | |
492 | FD_ZERO(&excfds); | |
493 | select_timeout.tv_sec = 0; | |
494 | select_timeout.tv_usec = 50000; | |
495 | select(max_fd, &readfds, &writefds, | |
496 | &excfds, &select_timeout); | |
497 | } | |
498 | } | |
499 | #else | |
500 | while (slot->in_use) { | |
501 | slot->curl_result = curl_easy_perform(slot->curl); | |
502 | finish_active_slot(slot); | |
503 | } | |
504 | #endif | |
505 | } | |
506 | ||
53f31389 | 507 | static void closedown_active_slot(struct active_request_slot *slot) |
29508e1e | 508 | { |
028c2976 MH |
509 | active_requests--; |
510 | slot->in_use = 0; | |
53f31389 MW |
511 | } |
512 | ||
513 | void release_active_slot(struct active_request_slot *slot) | |
514 | { | |
515 | closedown_active_slot(slot); | |
516 | if (slot->curl) { | |
b3ca4e4e | 517 | #ifdef USE_CURL_MULTI |
53f31389 | 518 | curl_multi_remove_handle(curlm, slot->curl); |
b3ca4e4e | 519 | #endif |
53f31389 MW |
520 | curl_easy_cleanup(slot->curl); |
521 | slot->curl = NULL; | |
522 | } | |
b3ca4e4e | 523 | #ifdef USE_CURL_MULTI |
53f31389 | 524 | fill_active_slots(); |
b3ca4e4e | 525 | #endif |
53f31389 MW |
526 | } |
527 | ||
528 | static void finish_active_slot(struct active_request_slot *slot) | |
529 | { | |
530 | closedown_active_slot(slot); | |
028c2976 | 531 | curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code); |
c8568e13 | 532 | |
baa7b67d NH |
533 | if (slot->finished != NULL) |
534 | (*slot->finished) = 1; | |
535 | ||
c8568e13 NH |
536 | /* Store slot results so they can be read after the slot is reused */ |
537 | if (slot->results != NULL) { | |
538 | slot->results->curl_result = slot->curl_result; | |
539 | slot->results->http_code = slot->http_code; | |
540 | } | |
541 | ||
028c2976 MH |
542 | /* Run callback if appropriate */ |
543 | if (slot->callback_func != NULL) { | |
544 | slot->callback_func(slot->callback_data); | |
545 | } | |
29508e1e NH |
546 | } |
547 | ||
548 | void finish_all_active_slots(void) | |
549 | { | |
550 | struct active_request_slot *slot = active_queue_head; | |
551 | ||
552 | while (slot != NULL) | |
553 | if (slot->in_use) { | |
554 | run_active_slot(slot); | |
555 | slot = active_queue_head; | |
556 | } else { | |
557 | slot = slot->next; | |
558 | } | |
559 | } | |
d7e92806 MH |
560 | |
561 | static inline int needs_quote(int ch) | |
562 | { | |
563 | if (((ch >= 'A') && (ch <= 'Z')) | |
564 | || ((ch >= 'a') && (ch <= 'z')) | |
565 | || ((ch >= '0') && (ch <= '9')) | |
566 | || (ch == '/') | |
567 | || (ch == '-') | |
568 | || (ch == '.')) | |
569 | return 0; | |
570 | return 1; | |
571 | } | |
572 | ||
573 | static inline int hex(int v) | |
574 | { | |
575 | if (v < 10) return '0' + v; | |
576 | else return 'A' + v - 10; | |
577 | } | |
578 | ||
579 | static char *quote_ref_url(const char *base, const char *ref) | |
580 | { | |
581 | const char *cp; | |
582 | char *dp, *qref; | |
583 | int len, baselen, ch; | |
584 | ||
585 | baselen = strlen(base); | |
7c1a9e79 | 586 | len = baselen + 2; /* '/' after base and terminating NUL */ |
d7e92806 MH |
587 | for (cp = ref; (ch = *cp) != 0; cp++, len++) |
588 | if (needs_quote(ch)) | |
589 | len += 2; /* extra two hex plus replacement % */ | |
590 | qref = xmalloc(len); | |
591 | memcpy(qref, base, baselen); | |
c13b2633 DB |
592 | dp = qref + baselen; |
593 | *(dp++) = '/'; | |
594 | for (cp = ref; (ch = *cp) != 0; cp++) { | |
d7e92806 MH |
595 | if (needs_quote(ch)) { |
596 | *dp++ = '%'; | |
597 | *dp++ = hex((ch >> 4) & 0xF); | |
598 | *dp++ = hex(ch & 0xF); | |
599 | } | |
600 | else | |
601 | *dp++ = ch; | |
602 | } | |
603 | *dp = 0; | |
604 | ||
605 | return qref; | |
606 | } | |
607 | ||
c13b2633 | 608 | int http_fetch_ref(const char *base, struct ref *ref) |
d7e92806 MH |
609 | { |
610 | char *url; | |
611 | struct strbuf buffer = STRBUF_INIT; | |
612 | struct active_request_slot *slot; | |
613 | struct slot_results results; | |
614 | int ret; | |
615 | ||
c13b2633 | 616 | url = quote_ref_url(base, ref->name); |
d7e92806 MH |
617 | slot = get_active_slot(); |
618 | slot->results = &results; | |
619 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
620 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
621 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
622 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
623 | if (start_active_slot(slot)) { | |
624 | run_active_slot(slot); | |
625 | if (results.curl_result == CURLE_OK) { | |
626 | strbuf_rtrim(&buffer); | |
627 | if (buffer.len == 40) | |
c13b2633 | 628 | ret = get_sha1_hex(buffer.buf, ref->old_sha1); |
be885d96 DB |
629 | else if (!prefixcmp(buffer.buf, "ref: ")) { |
630 | ref->symref = xstrdup(buffer.buf + 5); | |
631 | ret = 0; | |
632 | } else | |
d7e92806 MH |
633 | ret = 1; |
634 | } else { | |
635 | ret = error("Couldn't get %s for %s\n%s", | |
c13b2633 | 636 | url, ref->name, curl_errorstr); |
d7e92806 MH |
637 | } |
638 | } else { | |
639 | ret = error("Unable to start request"); | |
640 | } | |
641 | ||
642 | strbuf_release(&buffer); | |
643 | free(url); | |
644 | return ret; | |
645 | } |