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Commit | Line | Data |
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6eb7ed54 DB |
1 | #include "cache.h" |
2 | #include "commit.h" | |
271421cd | 3 | #include "pack.h" |
215a7ad1 | 4 | #include "fetch.h" |
4250a5e5 | 5 | |
6eb7ed54 DB |
6 | #include <curl/curl.h> |
7 | #include <curl/easy.h> | |
8 | ||
a7a8d378 NH |
9 | #if LIBCURL_VERSION_NUM >= 0x070908 |
10 | #define USE_CURL_MULTI | |
1d389ab6 | 11 | #define DEFAULT_MAX_REQUESTS 5 |
a7a8d378 | 12 | #endif |
1d389ab6 | 13 | |
4a30976e JS |
14 | #if LIBCURL_VERSION_NUM < 0x070704 |
15 | #define curl_global_cleanup() do { /* nothing */ } while(0) | |
16 | #endif | |
17 | #if LIBCURL_VERSION_NUM < 0x070800 | |
18 | #define curl_global_init(a) do { /* nothing */ } while(0) | |
19 | #endif | |
4a30976e | 20 | |
7baa3e86 JS |
21 | #if LIBCURL_VERSION_NUM < 0x070c04 |
22 | #define NO_CURL_EASY_DUPHANDLE | |
23 | #endif | |
24 | ||
49a0f240 NH |
25 | #define PREV_BUF_SIZE 4096 |
26 | #define RANGE_HEADER_SIZE 30 | |
27 | ||
1d389ab6 NH |
28 | static int active_requests = 0; |
29 | static int data_received; | |
30 | ||
a7a8d378 | 31 | #ifdef USE_CURL_MULTI |
d402d556 | 32 | static int max_requests = -1; |
1d389ab6 | 33 | static CURLM *curlm; |
a7a8d378 | 34 | #endif |
7baa3e86 | 35 | #ifndef NO_CURL_EASY_DUPHANDLE |
1d389ab6 | 36 | static CURL *curl_default; |
7baa3e86 | 37 | #endif |
03126006 | 38 | static struct curl_slist *pragma_header; |
1db69b57 | 39 | static struct curl_slist *no_pragma_header; |
49a0f240 | 40 | static struct curl_slist *no_range_header; |
1ddea77e | 41 | static char curl_errorstr[CURL_ERROR_SIZE]; |
6eb7ed54 | 42 | |
b3661567 DB |
43 | struct alt_base |
44 | { | |
45 | char *base; | |
46 | int got_indices; | |
47 | struct packed_git *packs; | |
48 | struct alt_base *next; | |
49 | }; | |
50 | ||
a7928f8e | 51 | static struct alt_base *alt = NULL; |
6eb7ed54 | 52 | |
1d389ab6 NH |
53 | enum transfer_state { |
54 | WAITING, | |
55 | ABORTED, | |
56 | ACTIVE, | |
57 | COMPLETE, | |
58 | }; | |
6eb7ed54 | 59 | |
1d389ab6 NH |
60 | struct transfer_request |
61 | { | |
62 | unsigned char sha1[20]; | |
63 | struct alt_base *repo; | |
64 | char *url; | |
65 | char filename[PATH_MAX]; | |
66 | char tmpfile[PATH_MAX]; | |
67 | int local; | |
68 | enum transfer_state state; | |
69 | CURLcode curl_result; | |
70 | char errorstr[CURL_ERROR_SIZE]; | |
71 | long http_code; | |
72 | unsigned char real_sha1[20]; | |
73 | SHA_CTX c; | |
74 | z_stream stream; | |
75 | int zret; | |
76 | int rename; | |
77 | struct active_request_slot *slot; | |
78 | struct transfer_request *next; | |
79 | }; | |
80 | ||
81 | struct active_request_slot | |
82 | { | |
83 | CURL *curl; | |
84 | FILE *local; | |
85 | int in_use; | |
86 | int done; | |
87 | CURLcode curl_result; | |
88 | struct active_request_slot *next; | |
89 | }; | |
90 | ||
91 | static struct transfer_request *request_queue_head = NULL; | |
92 | static struct active_request_slot *active_queue_head = NULL; | |
6eb7ed54 | 93 | |
d402d556 NH |
94 | static int curl_ssl_verify = -1; |
95 | static char *ssl_cert = NULL; | |
7baa3e86 | 96 | #if LIBCURL_VERSION_NUM >= 0x070902 |
d402d556 | 97 | static char *ssl_key = NULL; |
7baa3e86 JS |
98 | #endif |
99 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
d402d556 | 100 | static char *ssl_capath = NULL; |
7baa3e86 | 101 | #endif |
d402d556 | 102 | static char *ssl_cainfo = NULL; |
e0004e28 NH |
103 | static long curl_low_speed_limit = -1; |
104 | static long curl_low_speed_time = -1; | |
3dcb90f5 | 105 | |
fa3e0655 DB |
106 | struct buffer |
107 | { | |
108 | size_t posn; | |
109 | size_t size; | |
110 | void *buffer; | |
111 | }; | |
112 | ||
d402d556 NH |
113 | static int http_options(const char *var, const char *value) |
114 | { | |
115 | if (!strcmp("http.sslverify", var)) { | |
116 | if (curl_ssl_verify == -1) { | |
117 | curl_ssl_verify = git_config_bool(var, value); | |
118 | } | |
119 | return 0; | |
120 | } | |
121 | ||
122 | if (!strcmp("http.sslcert", var)) { | |
123 | if (ssl_cert == NULL) { | |
124 | ssl_cert = xmalloc(strlen(value)+1); | |
125 | strcpy(ssl_cert, value); | |
126 | } | |
127 | return 0; | |
128 | } | |
129 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
130 | if (!strcmp("http.sslkey", var)) { | |
131 | if (ssl_key == NULL) { | |
132 | ssl_key = xmalloc(strlen(value)+1); | |
133 | strcpy(ssl_key, value); | |
134 | } | |
135 | return 0; | |
136 | } | |
137 | #endif | |
138 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
139 | if (!strcmp("http.sslcapath", var)) { | |
140 | if (ssl_capath == NULL) { | |
141 | ssl_capath = xmalloc(strlen(value)+1); | |
142 | strcpy(ssl_capath, value); | |
143 | } | |
144 | return 0; | |
145 | } | |
146 | #endif | |
147 | if (!strcmp("http.sslcainfo", var)) { | |
148 | if (ssl_cainfo == NULL) { | |
149 | ssl_cainfo = xmalloc(strlen(value)+1); | |
150 | strcpy(ssl_cainfo, value); | |
151 | } | |
152 | return 0; | |
153 | } | |
154 | ||
155 | #ifdef USE_CURL_MULTI | |
156 | if (!strcmp("http.maxrequests", var)) { | |
157 | if (max_requests == -1) | |
158 | max_requests = git_config_int(var, value); | |
159 | return 0; | |
160 | } | |
161 | #endif | |
162 | ||
e0004e28 NH |
163 | if (!strcmp("http.lowspeedlimit", var)) { |
164 | if (curl_low_speed_limit == -1) | |
165 | curl_low_speed_limit = (long)git_config_int(var, value); | |
166 | return 0; | |
167 | } | |
168 | if (!strcmp("http.lowspeedtime", var)) { | |
169 | if (curl_low_speed_time == -1) | |
170 | curl_low_speed_time = (long)git_config_int(var, value); | |
171 | return 0; | |
172 | } | |
173 | ||
d402d556 NH |
174 | /* Fall back on the default ones */ |
175 | return git_default_config(var, value); | |
176 | } | |
177 | ||
fa3e0655 | 178 | static size_t fwrite_buffer(void *ptr, size_t eltsize, size_t nmemb, |
182005b9 DB |
179 | struct buffer *buffer) |
180 | { | |
fa3e0655 DB |
181 | size_t size = eltsize * nmemb; |
182 | if (size > buffer->size - buffer->posn) | |
183 | size = buffer->size - buffer->posn; | |
184 | memcpy(buffer->buffer + buffer->posn, ptr, size); | |
185 | buffer->posn += size; | |
1d389ab6 | 186 | data_received++; |
fa3e0655 DB |
187 | return size; |
188 | } | |
189 | ||
bc8f2652 SV |
190 | static size_t fwrite_buffer_dynamic(const void *ptr, size_t eltsize, |
191 | size_t nmemb, struct buffer *buffer) | |
192 | { | |
193 | size_t size = eltsize * nmemb; | |
194 | if (size > buffer->size - buffer->posn) { | |
195 | buffer->size = buffer->size * 3 / 2; | |
196 | if (buffer->size < buffer->posn + size) | |
197 | buffer->size = buffer->posn + size; | |
198 | buffer->buffer = xrealloc(buffer->buffer, buffer->size); | |
199 | } | |
200 | memcpy(buffer->buffer + buffer->posn, ptr, size); | |
201 | buffer->posn += size; | |
202 | data_received++; | |
203 | return size; | |
204 | } | |
205 | ||
182005b9 DB |
206 | static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb, |
207 | void *data) | |
208 | { | |
bf0f910d | 209 | unsigned char expn[4096]; |
6eb7ed54 DB |
210 | size_t size = eltsize * nmemb; |
211 | int posn = 0; | |
1d389ab6 | 212 | struct transfer_request *request = (struct transfer_request *)data; |
6eb7ed54 | 213 | do { |
1d389ab6 NH |
214 | ssize_t retval = write(request->local, |
215 | ptr + posn, size - posn); | |
6eb7ed54 DB |
216 | if (retval < 0) |
217 | return posn; | |
218 | posn += retval; | |
219 | } while (posn < size); | |
220 | ||
1d389ab6 NH |
221 | request->stream.avail_in = size; |
222 | request->stream.next_in = ptr; | |
6eb7ed54 | 223 | do { |
1d389ab6 NH |
224 | request->stream.next_out = expn; |
225 | request->stream.avail_out = sizeof(expn); | |
226 | request->zret = inflate(&request->stream, Z_SYNC_FLUSH); | |
227 | SHA1_Update(&request->c, expn, | |
228 | sizeof(expn) - request->stream.avail_out); | |
229 | } while (request->stream.avail_in && request->zret == Z_OK); | |
230 | data_received++; | |
6eb7ed54 DB |
231 | return size; |
232 | } | |
233 | ||
a7a8d378 | 234 | #ifdef USE_CURL_MULTI |
f5dce806 PH |
235 | static void process_curl_messages(void); |
236 | static void process_request_queue(void); | |
a7a8d378 | 237 | #endif |
1d389ab6 | 238 | |
f5dce806 | 239 | static CURL* get_curl_handle(void) |
7baa3e86 JS |
240 | { |
241 | CURL* result = curl_easy_init(); | |
242 | ||
243 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, curl_ssl_verify); | |
244 | #if LIBCURL_VERSION_NUM >= 0x070907 | |
245 | curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL); | |
246 | #endif | |
247 | ||
248 | if (ssl_cert != NULL) | |
249 | curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert); | |
250 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
251 | if (ssl_key != NULL) | |
252 | curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key); | |
253 | #endif | |
254 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
255 | if (ssl_capath != NULL) | |
256 | curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath); | |
257 | #endif | |
258 | if (ssl_cainfo != NULL) | |
259 | curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo); | |
260 | curl_easy_setopt(result, CURLOPT_FAILONERROR, 1); | |
261 | ||
e0004e28 NH |
262 | if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) { |
263 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT, | |
264 | curl_low_speed_limit); | |
265 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME, | |
266 | curl_low_speed_time); | |
267 | } | |
268 | ||
7baa3e86 JS |
269 | return result; |
270 | } | |
271 | ||
f5dce806 | 272 | static struct active_request_slot *get_active_slot(void) |
1d389ab6 NH |
273 | { |
274 | struct active_request_slot *slot = active_queue_head; | |
275 | struct active_request_slot *newslot; | |
a7a8d378 NH |
276 | |
277 | #ifdef USE_CURL_MULTI | |
1d389ab6 NH |
278 | int num_transfers; |
279 | ||
280 | /* Wait for a slot to open up if the queue is full */ | |
281 | while (active_requests >= max_requests) { | |
282 | curl_multi_perform(curlm, &num_transfers); | |
283 | if (num_transfers < active_requests) { | |
284 | process_curl_messages(); | |
285 | } | |
286 | } | |
a7a8d378 | 287 | #endif |
1d389ab6 NH |
288 | |
289 | while (slot != NULL && slot->in_use) { | |
290 | slot = slot->next; | |
291 | } | |
292 | if (slot == NULL) { | |
293 | newslot = xmalloc(sizeof(*newslot)); | |
7baa3e86 JS |
294 | #ifdef NO_CURL_EASY_DUPHANDLE |
295 | newslot->curl = get_curl_handle(); | |
296 | #else | |
1d389ab6 | 297 | newslot->curl = curl_easy_duphandle(curl_default); |
7baa3e86 | 298 | #endif |
1d389ab6 NH |
299 | newslot->in_use = 0; |
300 | newslot->next = NULL; | |
301 | ||
302 | slot = active_queue_head; | |
303 | if (slot == NULL) { | |
304 | active_queue_head = newslot; | |
305 | } else { | |
306 | while (slot->next != NULL) { | |
307 | slot = slot->next; | |
308 | } | |
309 | slot->next = newslot; | |
310 | } | |
311 | slot = newslot; | |
312 | } | |
313 | ||
314 | active_requests++; | |
315 | slot->in_use = 1; | |
316 | slot->done = 0; | |
317 | slot->local = NULL; | |
03126006 | 318 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header); |
1d389ab6 NH |
319 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_range_header); |
320 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr); | |
321 | ||
322 | return slot; | |
323 | } | |
324 | ||
f5dce806 | 325 | static int start_active_slot(struct active_request_slot *slot) |
1d389ab6 | 326 | { |
a7a8d378 | 327 | #ifdef USE_CURL_MULTI |
1d389ab6 NH |
328 | CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl); |
329 | ||
330 | if (curlm_result != CURLM_OK && | |
331 | curlm_result != CURLM_CALL_MULTI_PERFORM) { | |
332 | active_requests--; | |
333 | slot->in_use = 0; | |
334 | return 0; | |
335 | } | |
a7a8d378 | 336 | #endif |
1d389ab6 NH |
337 | return 1; |
338 | } | |
339 | ||
f5dce806 | 340 | static void run_active_slot(struct active_request_slot *slot) |
1d389ab6 | 341 | { |
a7a8d378 | 342 | #ifdef USE_CURL_MULTI |
1d389ab6 NH |
343 | int num_transfers; |
344 | long last_pos = 0; | |
345 | long current_pos; | |
346 | fd_set readfds; | |
347 | fd_set writefds; | |
348 | fd_set excfds; | |
349 | int max_fd; | |
350 | struct timeval select_timeout; | |
351 | CURLMcode curlm_result; | |
352 | ||
353 | while (!slot->done) { | |
354 | data_received = 0; | |
355 | do { | |
356 | curlm_result = curl_multi_perform(curlm, | |
357 | &num_transfers); | |
358 | } while (curlm_result == CURLM_CALL_MULTI_PERFORM); | |
359 | if (num_transfers < active_requests) { | |
360 | process_curl_messages(); | |
361 | process_request_queue(); | |
362 | } | |
363 | ||
364 | if (!data_received && slot->local != NULL) { | |
365 | current_pos = ftell(slot->local); | |
366 | if (current_pos > last_pos) | |
367 | data_received++; | |
368 | last_pos = current_pos; | |
369 | } | |
370 | ||
371 | if (!slot->done && !data_received) { | |
372 | max_fd = 0; | |
373 | FD_ZERO(&readfds); | |
374 | FD_ZERO(&writefds); | |
375 | FD_ZERO(&excfds); | |
376 | select_timeout.tv_sec = 0; | |
377 | select_timeout.tv_usec = 50000; | |
378 | select(max_fd, &readfds, &writefds, | |
379 | &excfds, &select_timeout); | |
380 | } | |
381 | } | |
a7a8d378 NH |
382 | #else |
383 | slot->curl_result = curl_easy_perform(slot->curl); | |
384 | active_requests--; | |
385 | #endif | |
1d389ab6 NH |
386 | } |
387 | ||
f5dce806 | 388 | static void start_request(struct transfer_request *request) |
1d389ab6 NH |
389 | { |
390 | char *hex = sha1_to_hex(request->sha1); | |
391 | char prevfile[PATH_MAX]; | |
392 | char *url; | |
393 | char *posn; | |
394 | int prevlocal; | |
395 | unsigned char prev_buf[PREV_BUF_SIZE]; | |
396 | ssize_t prev_read = 0; | |
397 | long prev_posn = 0; | |
398 | char range[RANGE_HEADER_SIZE]; | |
399 | struct curl_slist *range_header = NULL; | |
400 | struct active_request_slot *slot; | |
401 | ||
402 | snprintf(prevfile, sizeof(prevfile), "%s.prev", request->filename); | |
403 | unlink(prevfile); | |
404 | rename(request->tmpfile, prevfile); | |
405 | unlink(request->tmpfile); | |
406 | ||
407 | request->local = open(request->tmpfile, | |
408 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
b721e01f JH |
409 | /* This could have failed due to the "lazy directory creation"; |
410 | * try to mkdir the last path component. | |
411 | */ | |
412 | if (request->local < 0 && errno == ENOENT) { | |
413 | char *dir = strrchr(request->tmpfile, '/'); | |
414 | if (dir) { | |
415 | *dir = 0; | |
416 | mkdir(request->tmpfile, 0777); | |
417 | *dir = '/'; | |
418 | } | |
419 | request->local = open(request->tmpfile, | |
420 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
421 | } | |
422 | ||
1d389ab6 NH |
423 | if (request->local < 0) { |
424 | request->state = ABORTED; | |
425 | error("Couldn't create temporary file %s for %s: %s\n", | |
426 | request->tmpfile, request->filename, strerror(errno)); | |
427 | return; | |
428 | } | |
429 | ||
430 | memset(&request->stream, 0, sizeof(request->stream)); | |
431 | ||
432 | inflateInit(&request->stream); | |
433 | ||
434 | SHA1_Init(&request->c); | |
435 | ||
436 | url = xmalloc(strlen(request->repo->base) + 50); | |
437 | request->url = xmalloc(strlen(request->repo->base) + 50); | |
438 | strcpy(url, request->repo->base); | |
439 | posn = url + strlen(request->repo->base); | |
440 | strcpy(posn, "objects/"); | |
441 | posn += 8; | |
442 | memcpy(posn, hex, 2); | |
443 | posn += 2; | |
444 | *(posn++) = '/'; | |
445 | strcpy(posn, hex + 2); | |
446 | strcpy(request->url, url); | |
447 | ||
448 | /* If a previous temp file is present, process what was already | |
449 | fetched. */ | |
450 | prevlocal = open(prevfile, O_RDONLY); | |
451 | if (prevlocal != -1) { | |
452 | do { | |
453 | prev_read = read(prevlocal, prev_buf, PREV_BUF_SIZE); | |
454 | if (prev_read>0) { | |
455 | if (fwrite_sha1_file(prev_buf, | |
456 | 1, | |
457 | prev_read, | |
458 | request) == prev_read) { | |
459 | prev_posn += prev_read; | |
460 | } else { | |
461 | prev_read = -1; | |
462 | } | |
463 | } | |
464 | } while (prev_read > 0); | |
465 | close(prevlocal); | |
466 | } | |
467 | unlink(prevfile); | |
468 | ||
469 | /* Reset inflate/SHA1 if there was an error reading the previous temp | |
470 | file; also rewind to the beginning of the local file. */ | |
471 | if (prev_read == -1) { | |
472 | memset(&request->stream, 0, sizeof(request->stream)); | |
473 | inflateInit(&request->stream); | |
474 | SHA1_Init(&request->c); | |
475 | if (prev_posn>0) { | |
476 | prev_posn = 0; | |
477 | lseek(request->local, SEEK_SET, 0); | |
478 | ftruncate(request->local, 0); | |
479 | } | |
480 | } | |
481 | ||
482 | slot = get_active_slot(); | |
483 | curl_easy_setopt(slot->curl, CURLOPT_FILE, request); | |
484 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); | |
485 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr); | |
486 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 487 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 NH |
488 | |
489 | /* If we have successfully processed data from a previous fetch | |
490 | attempt, only fetch the data we don't already have. */ | |
491 | if (prev_posn>0) { | |
492 | if (get_verbosely) | |
493 | fprintf(stderr, | |
494 | "Resuming fetch of object %s at byte %ld\n", | |
495 | hex, prev_posn); | |
496 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
497 | range_header = curl_slist_append(range_header, range); | |
498 | curl_easy_setopt(slot->curl, | |
499 | CURLOPT_HTTPHEADER, range_header); | |
500 | } | |
501 | ||
a7a8d378 | 502 | /* Try to get the request started, abort the request on error */ |
1d389ab6 NH |
503 | if (!start_active_slot(slot)) { |
504 | request->state = ABORTED; | |
505 | close(request->local); | |
506 | free(request->url); | |
507 | return; | |
508 | } | |
509 | ||
510 | request->slot = slot; | |
511 | request->state = ACTIVE; | |
512 | } | |
513 | ||
f5dce806 | 514 | static void finish_request(struct transfer_request *request) |
1d389ab6 NH |
515 | { |
516 | fchmod(request->local, 0444); | |
517 | close(request->local); | |
518 | ||
519 | if (request->http_code == 416) { | |
520 | fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n"); | |
521 | } else if (request->curl_result != CURLE_OK) { | |
522 | return; | |
523 | } | |
524 | ||
525 | inflateEnd(&request->stream); | |
526 | SHA1_Final(request->real_sha1, &request->c); | |
527 | if (request->zret != Z_STREAM_END) { | |
528 | unlink(request->tmpfile); | |
529 | return; | |
530 | } | |
531 | if (memcmp(request->sha1, request->real_sha1, 20)) { | |
532 | unlink(request->tmpfile); | |
533 | return; | |
534 | } | |
535 | request->rename = | |
b721e01f | 536 | move_temp_to_file(request->tmpfile, request->filename); |
1d389ab6 NH |
537 | |
538 | if (request->rename == 0) | |
539 | pull_say("got %s\n", sha1_to_hex(request->sha1)); | |
540 | } | |
541 | ||
f5dce806 | 542 | static void release_request(struct transfer_request *request) |
1d389ab6 NH |
543 | { |
544 | struct transfer_request *entry = request_queue_head; | |
545 | ||
546 | if (request == request_queue_head) { | |
547 | request_queue_head = request->next; | |
548 | } else { | |
549 | while (entry->next != NULL && entry->next != request) | |
550 | entry = entry->next; | |
551 | if (entry->next == request) | |
552 | entry->next = entry->next->next; | |
553 | } | |
554 | ||
555 | free(request->url); | |
556 | free(request); | |
557 | } | |
558 | ||
a7a8d378 | 559 | #ifdef USE_CURL_MULTI |
f5dce806 | 560 | void process_curl_messages(void) |
1d389ab6 NH |
561 | { |
562 | int num_messages; | |
563 | struct active_request_slot *slot; | |
564 | struct transfer_request *request = NULL; | |
565 | CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages); | |
566 | ||
567 | while (curl_message != NULL) { | |
568 | if (curl_message->msg == CURLMSG_DONE) { | |
569 | slot = active_queue_head; | |
570 | while (slot != NULL && | |
571 | slot->curl != curl_message->easy_handle) | |
572 | slot = slot->next; | |
573 | if (slot != NULL) { | |
574 | curl_multi_remove_handle(curlm, slot->curl); | |
575 | active_requests--; | |
576 | slot->done = 1; | |
577 | slot->in_use = 0; | |
578 | slot->curl_result = curl_message->data.result; | |
579 | request = request_queue_head; | |
580 | while (request != NULL && | |
581 | request->slot != slot) | |
582 | request = request->next; | |
583 | } else { | |
584 | fprintf(stderr, "Received DONE message for unknown request!\n"); | |
585 | } | |
586 | if (request != NULL) { | |
587 | request->curl_result = | |
588 | curl_message->data.result; | |
589 | curl_easy_getinfo(slot->curl, | |
590 | CURLINFO_HTTP_CODE, | |
591 | &request->http_code); | |
592 | request->slot = NULL; | |
593 | ||
594 | /* Use alternates if necessary */ | |
595 | if (request->http_code == 404 && | |
596 | request->repo->next != NULL) { | |
597 | request->repo = request->repo->next; | |
598 | start_request(request); | |
599 | } else { | |
600 | finish_request(request); | |
601 | request->state = COMPLETE; | |
602 | } | |
603 | } | |
604 | } else { | |
605 | fprintf(stderr, "Unknown CURL message received: %d\n", | |
606 | (int)curl_message->msg); | |
607 | } | |
608 | curl_message = curl_multi_info_read(curlm, &num_messages); | |
609 | } | |
610 | } | |
611 | ||
f5dce806 | 612 | void process_request_queue(void) |
1d389ab6 NH |
613 | { |
614 | struct transfer_request *request = request_queue_head; | |
615 | int num_transfers; | |
616 | ||
617 | while (active_requests < max_requests && request != NULL) { | |
618 | if (request->state == WAITING) { | |
11f0dafe NH |
619 | if (has_sha1_file(request->sha1)) |
620 | release_request(request); | |
621 | else | |
622 | start_request(request); | |
1d389ab6 NH |
623 | curl_multi_perform(curlm, &num_transfers); |
624 | } | |
625 | request = request->next; | |
626 | } | |
627 | } | |
a7a8d378 | 628 | #endif |
1d389ab6 NH |
629 | |
630 | void prefetch(unsigned char *sha1) | |
631 | { | |
632 | struct transfer_request *newreq; | |
633 | struct transfer_request *tail; | |
634 | char *filename = sha1_file_name(sha1); | |
635 | ||
636 | newreq = xmalloc(sizeof(*newreq)); | |
637 | memcpy(newreq->sha1, sha1, 20); | |
638 | newreq->repo = alt; | |
639 | newreq->url = NULL; | |
640 | newreq->local = -1; | |
641 | newreq->state = WAITING; | |
642 | snprintf(newreq->filename, sizeof(newreq->filename), "%s", filename); | |
643 | snprintf(newreq->tmpfile, sizeof(newreq->tmpfile), | |
644 | "%s.temp", filename); | |
645 | newreq->next = NULL; | |
646 | ||
647 | if (request_queue_head == NULL) { | |
648 | request_queue_head = newreq; | |
649 | } else { | |
650 | tail = request_queue_head; | |
651 | while (tail->next != NULL) { | |
652 | tail = tail->next; | |
653 | } | |
654 | tail->next = newreq; | |
655 | } | |
a7a8d378 | 656 | #ifdef USE_CURL_MULTI |
1d389ab6 NH |
657 | process_request_queue(); |
658 | process_curl_messages(); | |
a7a8d378 | 659 | #endif |
1d389ab6 NH |
660 | } |
661 | ||
b3661567 | 662 | static int fetch_index(struct alt_base *repo, unsigned char *sha1) |
182005b9 | 663 | { |
1d389ab6 | 664 | char *hex = sha1_to_hex(sha1); |
182005b9 DB |
665 | char *filename; |
666 | char *url; | |
49a0f240 | 667 | char tmpfile[PATH_MAX]; |
49a0f240 NH |
668 | long prev_posn = 0; |
669 | char range[RANGE_HEADER_SIZE]; | |
670 | struct curl_slist *range_header = NULL; | |
182005b9 DB |
671 | |
672 | FILE *indexfile; | |
1d389ab6 | 673 | struct active_request_slot *slot; |
182005b9 DB |
674 | |
675 | if (has_pack_index(sha1)) | |
676 | return 0; | |
677 | ||
678 | if (get_verbosely) | |
1d389ab6 | 679 | fprintf(stderr, "Getting index for pack %s\n", hex); |
182005b9 | 680 | |
b3661567 | 681 | url = xmalloc(strlen(repo->base) + 64); |
1d389ab6 | 682 | sprintf(url, "%s/objects/pack/pack-%s.idx", repo->base, hex); |
182005b9 DB |
683 | |
684 | filename = sha1_pack_index_name(sha1); | |
49a0f240 NH |
685 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
686 | indexfile = fopen(tmpfile, "a"); | |
182005b9 DB |
687 | if (!indexfile) |
688 | return error("Unable to open local file %s for pack index", | |
689 | filename); | |
690 | ||
1d389ab6 NH |
691 | slot = get_active_slot(); |
692 | curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile); | |
693 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
694 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 695 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 NH |
696 | slot->local = indexfile; |
697 | ||
49a0f240 NH |
698 | /* If there is data present from a previous transfer attempt, |
699 | resume where it left off */ | |
700 | prev_posn = ftell(indexfile); | |
701 | if (prev_posn>0) { | |
702 | if (get_verbosely) | |
703 | fprintf(stderr, | |
704 | "Resuming fetch of index for pack %s at byte %ld\n", | |
1d389ab6 | 705 | hex, prev_posn); |
49a0f240 NH |
706 | sprintf(range, "Range: bytes=%ld-", prev_posn); |
707 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 708 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
709 | } |
710 | ||
1d389ab6 NH |
711 | if (start_active_slot(slot)) { |
712 | run_active_slot(slot); | |
713 | if (slot->curl_result != CURLE_OK) { | |
714 | fclose(indexfile); | |
715 | return error("Unable to get pack index %s\n%s", url, | |
716 | curl_errorstr); | |
717 | } | |
718 | } else { | |
719 | return error("Unable to start request"); | |
182005b9 DB |
720 | } |
721 | ||
722 | fclose(indexfile); | |
49a0f240 | 723 | |
b721e01f | 724 | return move_temp_to_file(tmpfile, filename); |
182005b9 DB |
725 | } |
726 | ||
b3661567 | 727 | static int setup_index(struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
728 | { |
729 | struct packed_git *new_pack; | |
730 | if (has_pack_file(sha1)) | |
731 | return 0; // don't list this as something we can get | |
732 | ||
b3661567 | 733 | if (fetch_index(repo, sha1)) |
182005b9 DB |
734 | return -1; |
735 | ||
736 | new_pack = parse_pack_index(sha1); | |
b3661567 DB |
737 | new_pack->next = repo->packs; |
738 | repo->packs = new_pack; | |
182005b9 DB |
739 | return 0; |
740 | } | |
741 | ||
b3661567 DB |
742 | static int fetch_alternates(char *base) |
743 | { | |
744 | int ret = 0; | |
745 | struct buffer buffer; | |
746 | char *url; | |
747 | char *data; | |
748 | int i = 0; | |
1b0c1e67 | 749 | int http_specific = 1; |
1d389ab6 | 750 | struct alt_base *tail = alt; |
bc8f2652 | 751 | static const char null_byte = '\0'; |
1d389ab6 NH |
752 | |
753 | struct active_request_slot *slot; | |
dc1b5ea8 | 754 | |
b3661567 | 755 | data = xmalloc(4096); |
bc8f2652 | 756 | buffer.size = 4096; |
b3661567 DB |
757 | buffer.posn = 0; |
758 | buffer.buffer = data; | |
759 | ||
760 | if (get_verbosely) | |
761 | fprintf(stderr, "Getting alternates list\n"); | |
762 | ||
763 | url = xmalloc(strlen(base) + 31); | |
764 | sprintf(url, "%s/objects/info/http-alternates", base); | |
765 | ||
1d389ab6 NH |
766 | slot = get_active_slot(); |
767 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
bc8f2652 SV |
768 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, |
769 | fwrite_buffer_dynamic); | |
1d389ab6 NH |
770 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
771 | if (start_active_slot(slot)) { | |
772 | run_active_slot(slot); | |
773 | if (slot->curl_result != CURLE_OK || !buffer.posn) { | |
774 | http_specific = 0; | |
775 | ||
776 | sprintf(url, "%s/objects/info/alternates", base); | |
777 | ||
778 | slot = get_active_slot(); | |
779 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
780 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, | |
bc8f2652 | 781 | fwrite_buffer_dynamic); |
1d389ab6 NH |
782 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
783 | if (start_active_slot(slot)) { | |
784 | run_active_slot(slot); | |
785 | if (slot->curl_result != CURLE_OK) { | |
bc8f2652 | 786 | free(buffer.buffer); |
1d389ab6 NH |
787 | return 0; |
788 | } | |
789 | } | |
b3661567 | 790 | } |
1d389ab6 | 791 | } else { |
bc8f2652 | 792 | free(buffer.buffer); |
1d389ab6 | 793 | return 0; |
b3661567 DB |
794 | } |
795 | ||
bc8f2652 SV |
796 | fwrite_buffer_dynamic(&null_byte, 1, 1, &buffer); |
797 | buffer.posn--; | |
798 | data = buffer.buffer; | |
1b0c1e67 | 799 | |
b3661567 DB |
800 | while (i < buffer.posn) { |
801 | int posn = i; | |
802 | while (posn < buffer.posn && data[posn] != '\n') | |
803 | posn++; | |
804 | if (data[posn] == '\n') { | |
1b0c1e67 DB |
805 | int okay = 0; |
806 | int serverlen = 0; | |
807 | struct alt_base *newalt; | |
808 | char *target = NULL; | |
b3661567 | 809 | if (data[i] == '/') { |
1b0c1e67 DB |
810 | serverlen = strchr(base + 8, '/') - base; |
811 | okay = 1; | |
812 | } else if (!memcmp(data + i, "../", 3)) { | |
813 | i += 3; | |
814 | serverlen = strlen(base); | |
815 | while (i + 2 < posn && | |
816 | !memcmp(data + i, "../", 3)) { | |
817 | do { | |
818 | serverlen--; | |
819 | } while (serverlen && | |
820 | base[serverlen - 1] != '/'); | |
821 | i += 3; | |
822 | } | |
823 | // If the server got removed, give up. | |
824 | okay = strchr(base, ':') - base + 3 < | |
825 | serverlen; | |
826 | } else if (http_specific) { | |
827 | char *colon = strchr(data + i, ':'); | |
828 | char *slash = strchr(data + i, '/'); | |
829 | if (colon && slash && colon < data + posn && | |
830 | slash < data + posn && colon < slash) { | |
831 | okay = 1; | |
832 | } | |
833 | } | |
834 | // skip 'objects' at end | |
835 | if (okay) { | |
836 | target = xmalloc(serverlen + posn - i - 6); | |
b3661567 DB |
837 | strncpy(target, base, serverlen); |
838 | strncpy(target + serverlen, data + i, | |
839 | posn - i - 7); | |
840 | target[serverlen + posn - i - 7] = '\0'; | |
841 | if (get_verbosely) | |
842 | fprintf(stderr, | |
843 | "Also look at %s\n", target); | |
844 | newalt = xmalloc(sizeof(*newalt)); | |
1d389ab6 | 845 | newalt->next = NULL; |
b3661567 DB |
846 | newalt->base = target; |
847 | newalt->got_indices = 0; | |
848 | newalt->packs = NULL; | |
1d389ab6 NH |
849 | while (tail->next != NULL) |
850 | tail = tail->next; | |
851 | tail->next = newalt; | |
b3661567 DB |
852 | ret++; |
853 | } | |
854 | } | |
855 | i = posn + 1; | |
856 | } | |
bc8f2652 SV |
857 | |
858 | free(buffer.buffer); | |
b3661567 DB |
859 | return ret; |
860 | } | |
861 | ||
862 | static int fetch_indices(struct alt_base *repo) | |
182005b9 DB |
863 | { |
864 | unsigned char sha1[20]; | |
865 | char *url; | |
866 | struct buffer buffer; | |
867 | char *data; | |
868 | int i = 0; | |
869 | ||
1d389ab6 NH |
870 | struct active_request_slot *slot; |
871 | ||
b3661567 | 872 | if (repo->got_indices) |
182005b9 DB |
873 | return 0; |
874 | ||
875 | data = xmalloc(4096); | |
876 | buffer.size = 4096; | |
877 | buffer.posn = 0; | |
878 | buffer.buffer = data; | |
879 | ||
880 | if (get_verbosely) | |
881 | fprintf(stderr, "Getting pack list\n"); | |
882 | ||
b3661567 DB |
883 | url = xmalloc(strlen(repo->base) + 21); |
884 | sprintf(url, "%s/objects/info/packs", repo->base); | |
182005b9 | 885 | |
1d389ab6 NH |
886 | slot = get_active_slot(); |
887 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
bc8f2652 SV |
888 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, |
889 | fwrite_buffer_dynamic); | |
1d389ab6 NH |
890 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
891 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
892 | if (start_active_slot(slot)) { | |
893 | run_active_slot(slot); | |
bc8f2652 SV |
894 | if (slot->curl_result != CURLE_OK) { |
895 | free(buffer.buffer); | |
1d389ab6 | 896 | return error("%s", curl_errorstr); |
bc8f2652 | 897 | } |
1d389ab6 | 898 | } else { |
bc8f2652 | 899 | free(buffer.buffer); |
1d389ab6 NH |
900 | return error("Unable to start request"); |
901 | } | |
182005b9 | 902 | |
bc8f2652 | 903 | data = buffer.buffer; |
b3661567 | 904 | while (i < buffer.posn) { |
182005b9 DB |
905 | switch (data[i]) { |
906 | case 'P': | |
907 | i++; | |
908 | if (i + 52 < buffer.posn && | |
909 | !strncmp(data + i, " pack-", 6) && | |
910 | !strncmp(data + i + 46, ".pack\n", 6)) { | |
911 | get_sha1_hex(data + i + 6, sha1); | |
b3661567 | 912 | setup_index(repo, sha1); |
182005b9 DB |
913 | i += 51; |
914 | break; | |
915 | } | |
916 | default: | |
917 | while (data[i] != '\n') | |
918 | i++; | |
919 | } | |
920 | i++; | |
b3661567 | 921 | } |
182005b9 | 922 | |
bc8f2652 | 923 | free(buffer.buffer); |
b3661567 | 924 | repo->got_indices = 1; |
182005b9 DB |
925 | return 0; |
926 | } | |
927 | ||
b3661567 | 928 | static int fetch_pack(struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
929 | { |
930 | char *url; | |
931 | struct packed_git *target; | |
932 | struct packed_git **lst; | |
933 | FILE *packfile; | |
934 | char *filename; | |
49a0f240 NH |
935 | char tmpfile[PATH_MAX]; |
936 | int ret; | |
937 | long prev_posn = 0; | |
938 | char range[RANGE_HEADER_SIZE]; | |
939 | struct curl_slist *range_header = NULL; | |
1d389ab6 NH |
940 | |
941 | struct active_request_slot *slot; | |
182005b9 | 942 | |
b3661567 | 943 | if (fetch_indices(repo)) |
182005b9 | 944 | return -1; |
b3661567 | 945 | target = find_sha1_pack(sha1, repo->packs); |
182005b9 | 946 | if (!target) |
b3661567 | 947 | return -1; |
182005b9 DB |
948 | |
949 | if (get_verbosely) { | |
950 | fprintf(stderr, "Getting pack %s\n", | |
951 | sha1_to_hex(target->sha1)); | |
952 | fprintf(stderr, " which contains %s\n", | |
953 | sha1_to_hex(sha1)); | |
954 | } | |
955 | ||
b3661567 | 956 | url = xmalloc(strlen(repo->base) + 65); |
182005b9 | 957 | sprintf(url, "%s/objects/pack/pack-%s.pack", |
b3661567 | 958 | repo->base, sha1_to_hex(target->sha1)); |
182005b9 DB |
959 | |
960 | filename = sha1_pack_name(target->sha1); | |
49a0f240 NH |
961 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
962 | packfile = fopen(tmpfile, "a"); | |
182005b9 DB |
963 | if (!packfile) |
964 | return error("Unable to open local file %s for pack", | |
965 | filename); | |
966 | ||
1d389ab6 NH |
967 | slot = get_active_slot(); |
968 | curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile); | |
969 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
970 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 971 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 | 972 | slot->local = packfile; |
1ddea77e | 973 | |
49a0f240 NH |
974 | /* If there is data present from a previous transfer attempt, |
975 | resume where it left off */ | |
976 | prev_posn = ftell(packfile); | |
977 | if (prev_posn>0) { | |
978 | if (get_verbosely) | |
979 | fprintf(stderr, | |
980 | "Resuming fetch of pack %s at byte %ld\n", | |
981 | sha1_to_hex(target->sha1), prev_posn); | |
982 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
983 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 984 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
985 | } |
986 | ||
1d389ab6 NH |
987 | if (start_active_slot(slot)) { |
988 | run_active_slot(slot); | |
989 | if (slot->curl_result != CURLE_OK) { | |
990 | fclose(packfile); | |
991 | return error("Unable to get pack file %s\n%s", url, | |
992 | curl_errorstr); | |
993 | } | |
994 | } else { | |
995 | return error("Unable to start request"); | |
182005b9 DB |
996 | } |
997 | ||
998 | fclose(packfile); | |
999 | ||
b721e01f | 1000 | ret = move_temp_to_file(tmpfile, filename); |
49a0f240 | 1001 | if (ret) |
b721e01f | 1002 | return ret; |
49a0f240 | 1003 | |
b3661567 | 1004 | lst = &repo->packs; |
182005b9 DB |
1005 | while (*lst != target) |
1006 | lst = &((*lst)->next); | |
1007 | *lst = (*lst)->next; | |
1008 | ||
271421cd JH |
1009 | if (verify_pack(target, 0)) |
1010 | return -1; | |
182005b9 DB |
1011 | install_packed_git(target); |
1012 | ||
1013 | return 0; | |
1014 | } | |
1015 | ||
a7928f8e | 1016 | static int fetch_object(struct alt_base *repo, unsigned char *sha1) |
6eb7ed54 DB |
1017 | { |
1018 | char *hex = sha1_to_hex(sha1); | |
09d92083 | 1019 | int ret; |
1d389ab6 | 1020 | struct transfer_request *request = request_queue_head; |
1d389ab6 NH |
1021 | |
1022 | while (request != NULL && memcmp(request->sha1, sha1, 20)) | |
1023 | request = request->next; | |
1024 | if (request == NULL) | |
1025 | return error("Couldn't find request for %s in the queue", hex); | |
1026 | ||
11f0dafe NH |
1027 | if (has_sha1_file(request->sha1)) { |
1028 | release_request(request); | |
1029 | return 0; | |
1030 | } | |
1031 | ||
a7a8d378 | 1032 | #ifdef USE_CURL_MULTI |
1d389ab6 | 1033 | while (request->state == WAITING) { |
f5dce806 | 1034 | int num_transfers; |
1d389ab6 NH |
1035 | curl_multi_perform(curlm, &num_transfers); |
1036 | if (num_transfers < active_requests) { | |
1037 | process_curl_messages(); | |
1038 | process_request_queue(); | |
1039 | } | |
1040 | } | |
a7a8d378 NH |
1041 | #else |
1042 | start_request(request); | |
1043 | #endif | |
6eb7ed54 | 1044 | |
a7a8d378 | 1045 | while (request->state == ACTIVE) { |
1d389ab6 | 1046 | run_active_slot(request->slot); |
a7a8d378 NH |
1047 | #ifndef USE_CURL_MULTI |
1048 | request->curl_result = request->slot->curl_result; | |
1049 | curl_easy_getinfo(request->slot->curl, | |
1050 | CURLINFO_HTTP_CODE, | |
1051 | &request->http_code); | |
1052 | request->slot = NULL; | |
1053 | ||
1054 | /* Use alternates if necessary */ | |
1055 | if (request->http_code == 404 && | |
1056 | request->repo->next != NULL) { | |
1057 | request->repo = request->repo->next; | |
1058 | start_request(request); | |
1059 | } else { | |
1060 | finish_request(request); | |
1061 | request->state = COMPLETE; | |
1062 | } | |
1063 | #endif | |
1064 | } | |
6eb7ed54 | 1065 | |
1d389ab6 NH |
1066 | if (request->state == ABORTED) { |
1067 | release_request(request); | |
1068 | return error("Request for %s aborted", hex); | |
49a0f240 | 1069 | } |
49a0f240 | 1070 | |
1d389ab6 | 1071 | if (request->curl_result != CURLE_OK && request->http_code != 416) { |
f80376c5 JH |
1072 | ret = error("%s (curl_result = %d, http_code = %ld, sha1 = %s)", |
1073 | request->errorstr, request->curl_result, | |
1074 | request->http_code, hex); | |
1d389ab6 NH |
1075 | release_request(request); |
1076 | return ret; | |
49a0f240 NH |
1077 | } |
1078 | ||
1d389ab6 NH |
1079 | if (request->zret != Z_STREAM_END) { |
1080 | ret = error("File %s (%s) corrupt\n", hex, request->url); | |
1081 | release_request(request); | |
1082 | return ret; | |
49a0f240 NH |
1083 | } |
1084 | ||
1d389ab6 NH |
1085 | if (memcmp(request->sha1, request->real_sha1, 20)) { |
1086 | release_request(request); | |
1087 | return error("File %s has bad hash\n", hex); | |
182005b9 | 1088 | } |
6eb7ed54 | 1089 | |
1d389ab6 NH |
1090 | if (request->rename < 0) { |
1091 | ret = error("unable to write sha1 filename %s: %s", | |
1092 | request->filename, | |
1093 | strerror(request->rename)); | |
1094 | release_request(request); | |
1095 | return ret; | |
6eb7ed54 | 1096 | } |
49a0f240 | 1097 | |
1d389ab6 | 1098 | release_request(request); |
6eb7ed54 DB |
1099 | return 0; |
1100 | } | |
1101 | ||
b3661567 DB |
1102 | int fetch(unsigned char *sha1) |
1103 | { | |
1104 | struct alt_base *altbase = alt; | |
1d389ab6 NH |
1105 | |
1106 | if (!fetch_object(altbase, sha1)) | |
1107 | return 0; | |
b3661567 | 1108 | while (altbase) { |
b3661567 DB |
1109 | if (!fetch_pack(altbase, sha1)) |
1110 | return 0; | |
b3661567 DB |
1111 | altbase = altbase->next; |
1112 | } | |
1113 | return error("Unable to find %s under %s\n", sha1_to_hex(sha1), | |
1d389ab6 | 1114 | alt->base); |
b3661567 DB |
1115 | } |
1116 | ||
94fa447a JH |
1117 | static inline int needs_quote(int ch) |
1118 | { | |
1119 | switch (ch) { | |
1120 | case '/': case '-': case '.': | |
1121 | case 'A'...'Z': case 'a'...'z': case '0'...'9': | |
1122 | return 0; | |
1123 | default: | |
1124 | return 1; | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | static inline int hex(int v) | |
1129 | { | |
1130 | if (v < 10) return '0' + v; | |
1131 | else return 'A' + v - 10; | |
1132 | } | |
1133 | ||
1134 | static char *quote_ref_url(const char *base, const char *ref) | |
1135 | { | |
1136 | const char *cp; | |
1137 | char *dp, *qref; | |
1138 | int len, baselen, ch; | |
1139 | ||
1140 | baselen = strlen(base); | |
1141 | len = baselen + 6; /* "refs/" + NUL */ | |
1142 | for (cp = ref; (ch = *cp) != 0; cp++, len++) | |
1143 | if (needs_quote(ch)) | |
1144 | len += 2; /* extra two hex plus replacement % */ | |
1145 | qref = xmalloc(len); | |
1146 | memcpy(qref, base, baselen); | |
1147 | memcpy(qref + baselen, "refs/", 5); | |
1148 | for (cp = ref, dp = qref + baselen + 5; (ch = *cp) != 0; cp++) { | |
1149 | if (needs_quote(ch)) { | |
1150 | *dp++ = '%'; | |
1151 | *dp++ = hex((ch >> 4) & 0xF); | |
1152 | *dp++ = hex(ch & 0xF); | |
1153 | } | |
1154 | else | |
1155 | *dp++ = ch; | |
1156 | } | |
1157 | *dp = 0; | |
1158 | ||
1159 | return qref; | |
1160 | } | |
1161 | ||
cd541a68 DB |
1162 | int fetch_ref(char *ref, unsigned char *sha1) |
1163 | { | |
94fa447a | 1164 | char *url; |
fa3e0655 DB |
1165 | char hex[42]; |
1166 | struct buffer buffer; | |
1d389ab6 NH |
1167 | char *base = alt->base; |
1168 | struct active_request_slot *slot; | |
fa3e0655 DB |
1169 | buffer.size = 41; |
1170 | buffer.posn = 0; | |
1171 | buffer.buffer = hex; | |
1172 | hex[41] = '\0'; | |
1173 | ||
94fa447a | 1174 | url = quote_ref_url(base, ref); |
1d389ab6 NH |
1175 | slot = get_active_slot(); |
1176 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
1177 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
1178 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
1179 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
1180 | if (start_active_slot(slot)) { | |
1181 | run_active_slot(slot); | |
1182 | if (slot->curl_result != CURLE_OK) | |
1183 | return error("Couldn't get %s for %s\n%s", | |
1184 | url, ref, curl_errorstr); | |
1185 | } else { | |
1186 | return error("Unable to start request"); | |
1187 | } | |
fa3e0655 DB |
1188 | |
1189 | hex[40] = '\0'; | |
1190 | get_sha1_hex(hex, sha1); | |
1191 | return 0; | |
cd541a68 DB |
1192 | } |
1193 | ||
6eb7ed54 DB |
1194 | int main(int argc, char **argv) |
1195 | { | |
1196 | char *commit_id; | |
1197 | char *url; | |
1198 | int arg = 1; | |
1d389ab6 | 1199 | struct active_request_slot *slot; |
e0004e28 NH |
1200 | char *low_speed_limit; |
1201 | char *low_speed_time; | |
6eb7ed54 DB |
1202 | |
1203 | while (arg < argc && argv[arg][0] == '-') { | |
1204 | if (argv[arg][1] == 't') { | |
4250a5e5 | 1205 | get_tree = 1; |
6eb7ed54 | 1206 | } else if (argv[arg][1] == 'c') { |
4250a5e5 | 1207 | get_history = 1; |
6eb7ed54 | 1208 | } else if (argv[arg][1] == 'a') { |
4250a5e5 DB |
1209 | get_all = 1; |
1210 | get_tree = 1; | |
1211 | get_history = 1; | |
e78d9772 JH |
1212 | } else if (argv[arg][1] == 'v') { |
1213 | get_verbosely = 1; | |
fa3e0655 DB |
1214 | } else if (argv[arg][1] == 'w') { |
1215 | write_ref = argv[arg + 1]; | |
1216 | arg++; | |
820eca68 DB |
1217 | } else if (!strcmp(argv[arg], "--recover")) { |
1218 | get_recover = 1; | |
6eb7ed54 DB |
1219 | } |
1220 | arg++; | |
1221 | } | |
1222 | if (argc < arg + 2) { | |
215a7ad1 | 1223 | usage("git-http-fetch [-c] [-t] [-a] [-d] [-v] [--recover] [-w ref] commit-id url"); |
6eb7ed54 DB |
1224 | return 1; |
1225 | } | |
1226 | commit_id = argv[arg]; | |
1227 | url = argv[arg + 1]; | |
1228 | ||
6eb7ed54 DB |
1229 | curl_global_init(CURL_GLOBAL_ALL); |
1230 | ||
a7a8d378 | 1231 | #ifdef USE_CURL_MULTI |
f5dce806 PH |
1232 | { |
1233 | char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS"); | |
1234 | if (http_max_requests != NULL) | |
1235 | max_requests = atoi(http_max_requests); | |
1236 | } | |
38079239 | 1237 | |
1d389ab6 NH |
1238 | curlm = curl_multi_init(); |
1239 | if (curlm == NULL) { | |
1240 | fprintf(stderr, "Error creating curl multi handle.\n"); | |
1241 | return 1; | |
1242 | } | |
a7a8d378 | 1243 | #endif |
d402d556 NH |
1244 | |
1245 | if (getenv("GIT_SSL_NO_VERIFY")) | |
1246 | curl_ssl_verify = 0; | |
1247 | ||
1248 | ssl_cert = getenv("GIT_SSL_CERT"); | |
1249 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
1250 | ssl_key = getenv("GIT_SSL_KEY"); | |
1251 | #endif | |
1252 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
1253 | ssl_capath = getenv("GIT_SSL_CAPATH"); | |
1254 | #endif | |
1255 | ssl_cainfo = getenv("GIT_SSL_CAINFO"); | |
1256 | ||
e0004e28 NH |
1257 | low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT"); |
1258 | if (low_speed_limit != NULL) | |
1259 | curl_low_speed_limit = strtol(low_speed_limit, NULL, 10); | |
1260 | low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME"); | |
1261 | if (low_speed_time != NULL) | |
1262 | curl_low_speed_time = strtol(low_speed_time, NULL, 10); | |
1263 | ||
d402d556 NH |
1264 | git_config(http_options); |
1265 | ||
1266 | if (curl_ssl_verify == -1) | |
1267 | curl_ssl_verify = 1; | |
1268 | ||
1269 | #ifdef USE_CURL_MULTI | |
1270 | if (max_requests < 1) | |
1271 | max_requests = DEFAULT_MAX_REQUESTS; | |
1272 | #endif | |
1273 | ||
03126006 | 1274 | pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache"); |
1db69b57 | 1275 | no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:"); |
49a0f240 | 1276 | no_range_header = curl_slist_append(no_range_header, "Range:"); |
6eb7ed54 | 1277 | |
7baa3e86 JS |
1278 | #ifndef NO_CURL_EASY_DUPHANDLE |
1279 | curl_default = get_curl_handle(); | |
9f6cf65e | 1280 | #endif |
3dcb90f5 | 1281 | |
b3661567 DB |
1282 | alt = xmalloc(sizeof(*alt)); |
1283 | alt->base = url; | |
1284 | alt->got_indices = 0; | |
1285 | alt->packs = NULL; | |
1286 | alt->next = NULL; | |
1d389ab6 | 1287 | fetch_alternates(alt->base); |
6eb7ed54 | 1288 | |
4250a5e5 | 1289 | if (pull(commit_id)) |
6eb7ed54 DB |
1290 | return 1; |
1291 | ||
03126006 | 1292 | curl_slist_free_all(pragma_header); |
1db69b57 | 1293 | curl_slist_free_all(no_pragma_header); |
1d389ab6 | 1294 | curl_slist_free_all(no_range_header); |
7baa3e86 | 1295 | #ifndef NO_CURL_EASY_DUPHANDLE |
1d389ab6 | 1296 | curl_easy_cleanup(curl_default); |
7baa3e86 | 1297 | #endif |
1d389ab6 NH |
1298 | slot = active_queue_head; |
1299 | while (slot != NULL) { | |
1300 | curl_easy_cleanup(slot->curl); | |
1301 | slot = slot->next; | |
1302 | } | |
a7a8d378 | 1303 | #ifdef USE_CURL_MULTI |
1d389ab6 | 1304 | curl_multi_cleanup(curlm); |
a7a8d378 | 1305 | #endif |
6eb7ed54 DB |
1306 | curl_global_cleanup(); |
1307 | return 0; | |
1308 | } |