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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 | ||
f7eb290f | 28 | static int got_alternates = 0; |
1d389ab6 NH |
29 | static int active_requests = 0; |
30 | static int data_received; | |
31 | ||
a7a8d378 | 32 | #ifdef USE_CURL_MULTI |
d402d556 | 33 | static int max_requests = -1; |
1d389ab6 | 34 | static CURLM *curlm; |
a7a8d378 | 35 | #endif |
7baa3e86 | 36 | #ifndef NO_CURL_EASY_DUPHANDLE |
1d389ab6 | 37 | static CURL *curl_default; |
7baa3e86 | 38 | #endif |
03126006 | 39 | static struct curl_slist *pragma_header; |
1db69b57 | 40 | static struct curl_slist *no_pragma_header; |
49a0f240 | 41 | static struct curl_slist *no_range_header; |
1ddea77e | 42 | static char curl_errorstr[CURL_ERROR_SIZE]; |
6eb7ed54 | 43 | |
b3661567 DB |
44 | struct alt_base |
45 | { | |
46 | char *base; | |
47 | int got_indices; | |
48 | struct packed_git *packs; | |
49 | struct alt_base *next; | |
50 | }; | |
51 | ||
a7928f8e | 52 | static struct alt_base *alt = NULL; |
6eb7ed54 | 53 | |
1d389ab6 NH |
54 | enum transfer_state { |
55 | WAITING, | |
56 | ABORTED, | |
57 | ACTIVE, | |
58 | COMPLETE, | |
59 | }; | |
6eb7ed54 | 60 | |
1d389ab6 NH |
61 | struct transfer_request |
62 | { | |
63 | unsigned char sha1[20]; | |
64 | struct alt_base *repo; | |
65 | char *url; | |
66 | char filename[PATH_MAX]; | |
67 | char tmpfile[PATH_MAX]; | |
68 | int local; | |
69 | enum transfer_state state; | |
70 | CURLcode curl_result; | |
71 | char errorstr[CURL_ERROR_SIZE]; | |
72 | long http_code; | |
73 | unsigned char real_sha1[20]; | |
74 | SHA_CTX c; | |
75 | z_stream stream; | |
76 | int zret; | |
77 | int rename; | |
78 | struct active_request_slot *slot; | |
79 | struct transfer_request *next; | |
80 | }; | |
81 | ||
82 | struct active_request_slot | |
83 | { | |
84 | CURL *curl; | |
85 | FILE *local; | |
86 | int in_use; | |
87 | int done; | |
88 | CURLcode curl_result; | |
f7eb290f | 89 | long http_code; |
1d389ab6 NH |
90 | struct active_request_slot *next; |
91 | }; | |
92 | ||
93 | static struct transfer_request *request_queue_head = NULL; | |
94 | static struct active_request_slot *active_queue_head = NULL; | |
6eb7ed54 | 95 | |
d402d556 NH |
96 | static int curl_ssl_verify = -1; |
97 | static char *ssl_cert = NULL; | |
7baa3e86 | 98 | #if LIBCURL_VERSION_NUM >= 0x070902 |
d402d556 | 99 | static char *ssl_key = NULL; |
7baa3e86 JS |
100 | #endif |
101 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
d402d556 | 102 | static char *ssl_capath = NULL; |
7baa3e86 | 103 | #endif |
d402d556 | 104 | static char *ssl_cainfo = NULL; |
e0004e28 NH |
105 | static long curl_low_speed_limit = -1; |
106 | static long curl_low_speed_time = -1; | |
3dcb90f5 | 107 | |
fa3e0655 DB |
108 | struct buffer |
109 | { | |
110 | size_t posn; | |
111 | size_t size; | |
112 | void *buffer; | |
113 | }; | |
114 | ||
d402d556 NH |
115 | static int http_options(const char *var, const char *value) |
116 | { | |
117 | if (!strcmp("http.sslverify", var)) { | |
118 | if (curl_ssl_verify == -1) { | |
119 | curl_ssl_verify = git_config_bool(var, value); | |
120 | } | |
121 | return 0; | |
122 | } | |
123 | ||
124 | if (!strcmp("http.sslcert", var)) { | |
125 | if (ssl_cert == NULL) { | |
126 | ssl_cert = xmalloc(strlen(value)+1); | |
127 | strcpy(ssl_cert, value); | |
128 | } | |
129 | return 0; | |
130 | } | |
131 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
132 | if (!strcmp("http.sslkey", var)) { | |
133 | if (ssl_key == NULL) { | |
134 | ssl_key = xmalloc(strlen(value)+1); | |
135 | strcpy(ssl_key, value); | |
136 | } | |
137 | return 0; | |
138 | } | |
139 | #endif | |
140 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
141 | if (!strcmp("http.sslcapath", var)) { | |
142 | if (ssl_capath == NULL) { | |
143 | ssl_capath = xmalloc(strlen(value)+1); | |
144 | strcpy(ssl_capath, value); | |
145 | } | |
146 | return 0; | |
147 | } | |
148 | #endif | |
149 | if (!strcmp("http.sslcainfo", var)) { | |
150 | if (ssl_cainfo == NULL) { | |
151 | ssl_cainfo = xmalloc(strlen(value)+1); | |
152 | strcpy(ssl_cainfo, value); | |
153 | } | |
154 | return 0; | |
155 | } | |
156 | ||
157 | #ifdef USE_CURL_MULTI | |
158 | if (!strcmp("http.maxrequests", var)) { | |
159 | if (max_requests == -1) | |
160 | max_requests = git_config_int(var, value); | |
161 | return 0; | |
162 | } | |
163 | #endif | |
164 | ||
e0004e28 NH |
165 | if (!strcmp("http.lowspeedlimit", var)) { |
166 | if (curl_low_speed_limit == -1) | |
167 | curl_low_speed_limit = (long)git_config_int(var, value); | |
168 | return 0; | |
169 | } | |
170 | if (!strcmp("http.lowspeedtime", var)) { | |
171 | if (curl_low_speed_time == -1) | |
172 | curl_low_speed_time = (long)git_config_int(var, value); | |
173 | return 0; | |
174 | } | |
175 | ||
d402d556 NH |
176 | /* Fall back on the default ones */ |
177 | return git_default_config(var, value); | |
178 | } | |
179 | ||
fa3e0655 | 180 | static size_t fwrite_buffer(void *ptr, size_t eltsize, size_t nmemb, |
182005b9 DB |
181 | struct buffer *buffer) |
182 | { | |
fa3e0655 DB |
183 | size_t size = eltsize * nmemb; |
184 | if (size > buffer->size - buffer->posn) | |
185 | size = buffer->size - buffer->posn; | |
186 | memcpy(buffer->buffer + buffer->posn, ptr, size); | |
187 | buffer->posn += size; | |
1d389ab6 | 188 | data_received++; |
fa3e0655 DB |
189 | return size; |
190 | } | |
191 | ||
bc8f2652 SV |
192 | static size_t fwrite_buffer_dynamic(const void *ptr, size_t eltsize, |
193 | size_t nmemb, struct buffer *buffer) | |
194 | { | |
195 | size_t size = eltsize * nmemb; | |
196 | if (size > buffer->size - buffer->posn) { | |
197 | buffer->size = buffer->size * 3 / 2; | |
198 | if (buffer->size < buffer->posn + size) | |
199 | buffer->size = buffer->posn + size; | |
200 | buffer->buffer = xrealloc(buffer->buffer, buffer->size); | |
201 | } | |
202 | memcpy(buffer->buffer + buffer->posn, ptr, size); | |
203 | buffer->posn += size; | |
204 | data_received++; | |
205 | return size; | |
206 | } | |
207 | ||
182005b9 DB |
208 | static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb, |
209 | void *data) | |
210 | { | |
bf0f910d | 211 | unsigned char expn[4096]; |
6eb7ed54 DB |
212 | size_t size = eltsize * nmemb; |
213 | int posn = 0; | |
1d389ab6 | 214 | struct transfer_request *request = (struct transfer_request *)data; |
6eb7ed54 | 215 | do { |
1d389ab6 NH |
216 | ssize_t retval = write(request->local, |
217 | ptr + posn, size - posn); | |
6eb7ed54 DB |
218 | if (retval < 0) |
219 | return posn; | |
220 | posn += retval; | |
221 | } while (posn < size); | |
222 | ||
1d389ab6 NH |
223 | request->stream.avail_in = size; |
224 | request->stream.next_in = ptr; | |
6eb7ed54 | 225 | do { |
1d389ab6 NH |
226 | request->stream.next_out = expn; |
227 | request->stream.avail_out = sizeof(expn); | |
228 | request->zret = inflate(&request->stream, Z_SYNC_FLUSH); | |
229 | SHA1_Update(&request->c, expn, | |
230 | sizeof(expn) - request->stream.avail_out); | |
231 | } while (request->stream.avail_in && request->zret == Z_OK); | |
232 | data_received++; | |
6eb7ed54 DB |
233 | return size; |
234 | } | |
235 | ||
a7a8d378 | 236 | #ifdef USE_CURL_MULTI |
f5dce806 PH |
237 | static void process_curl_messages(void); |
238 | static void process_request_queue(void); | |
a7a8d378 | 239 | #endif |
f7eb290f | 240 | static int fetch_alternates(char *base); |
1d389ab6 | 241 | |
f5dce806 | 242 | static CURL* get_curl_handle(void) |
7baa3e86 JS |
243 | { |
244 | CURL* result = curl_easy_init(); | |
245 | ||
246 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, curl_ssl_verify); | |
247 | #if LIBCURL_VERSION_NUM >= 0x070907 | |
248 | curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL); | |
249 | #endif | |
250 | ||
251 | if (ssl_cert != NULL) | |
252 | curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert); | |
253 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
254 | if (ssl_key != NULL) | |
255 | curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key); | |
256 | #endif | |
257 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
258 | if (ssl_capath != NULL) | |
259 | curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath); | |
260 | #endif | |
261 | if (ssl_cainfo != NULL) | |
262 | curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo); | |
263 | curl_easy_setopt(result, CURLOPT_FAILONERROR, 1); | |
264 | ||
e0004e28 NH |
265 | if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) { |
266 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT, | |
267 | curl_low_speed_limit); | |
268 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME, | |
269 | curl_low_speed_time); | |
270 | } | |
271 | ||
7baa3e86 JS |
272 | return result; |
273 | } | |
274 | ||
f5dce806 | 275 | static struct active_request_slot *get_active_slot(void) |
1d389ab6 NH |
276 | { |
277 | struct active_request_slot *slot = active_queue_head; | |
278 | struct active_request_slot *newslot; | |
a7a8d378 NH |
279 | |
280 | #ifdef USE_CURL_MULTI | |
1d389ab6 NH |
281 | int num_transfers; |
282 | ||
283 | /* Wait for a slot to open up if the queue is full */ | |
284 | while (active_requests >= max_requests) { | |
285 | curl_multi_perform(curlm, &num_transfers); | |
286 | if (num_transfers < active_requests) { | |
287 | process_curl_messages(); | |
288 | } | |
289 | } | |
a7a8d378 | 290 | #endif |
1d389ab6 NH |
291 | |
292 | while (slot != NULL && slot->in_use) { | |
293 | slot = slot->next; | |
294 | } | |
295 | if (slot == NULL) { | |
296 | newslot = xmalloc(sizeof(*newslot)); | |
f1a906a3 | 297 | newslot->curl = NULL; |
1d389ab6 NH |
298 | newslot->in_use = 0; |
299 | newslot->next = NULL; | |
300 | ||
301 | slot = active_queue_head; | |
302 | if (slot == NULL) { | |
303 | active_queue_head = newslot; | |
304 | } else { | |
305 | while (slot->next != NULL) { | |
306 | slot = slot->next; | |
307 | } | |
308 | slot->next = newslot; | |
309 | } | |
310 | slot = newslot; | |
311 | } | |
312 | ||
f1a906a3 NH |
313 | if (slot->curl == NULL) { |
314 | #ifdef NO_CURL_EASY_DUPHANDLE | |
315 | slot->curl = get_curl_handle(); | |
316 | #else | |
317 | slot->curl = curl_easy_duphandle(curl_default); | |
318 | #endif | |
319 | } | |
320 | ||
1d389ab6 NH |
321 | active_requests++; |
322 | slot->in_use = 1; | |
323 | slot->done = 0; | |
324 | slot->local = NULL; | |
03126006 | 325 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header); |
1d389ab6 NH |
326 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_range_header); |
327 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr); | |
328 | ||
329 | return slot; | |
330 | } | |
331 | ||
f5dce806 | 332 | static int start_active_slot(struct active_request_slot *slot) |
1d389ab6 | 333 | { |
a7a8d378 | 334 | #ifdef USE_CURL_MULTI |
1d389ab6 NH |
335 | CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl); |
336 | ||
337 | if (curlm_result != CURLM_OK && | |
338 | curlm_result != CURLM_CALL_MULTI_PERFORM) { | |
339 | active_requests--; | |
340 | slot->in_use = 0; | |
341 | return 0; | |
342 | } | |
a7a8d378 | 343 | #endif |
1d389ab6 NH |
344 | return 1; |
345 | } | |
346 | ||
f5dce806 | 347 | static void run_active_slot(struct active_request_slot *slot) |
1d389ab6 | 348 | { |
a7a8d378 | 349 | #ifdef USE_CURL_MULTI |
1d389ab6 NH |
350 | int num_transfers; |
351 | long last_pos = 0; | |
352 | long current_pos; | |
353 | fd_set readfds; | |
354 | fd_set writefds; | |
355 | fd_set excfds; | |
356 | int max_fd; | |
357 | struct timeval select_timeout; | |
358 | CURLMcode curlm_result; | |
359 | ||
360 | while (!slot->done) { | |
361 | data_received = 0; | |
362 | do { | |
363 | curlm_result = curl_multi_perform(curlm, | |
364 | &num_transfers); | |
365 | } while (curlm_result == CURLM_CALL_MULTI_PERFORM); | |
366 | if (num_transfers < active_requests) { | |
367 | process_curl_messages(); | |
368 | process_request_queue(); | |
369 | } | |
370 | ||
371 | if (!data_received && slot->local != NULL) { | |
372 | current_pos = ftell(slot->local); | |
373 | if (current_pos > last_pos) | |
374 | data_received++; | |
375 | last_pos = current_pos; | |
376 | } | |
377 | ||
378 | if (!slot->done && !data_received) { | |
379 | max_fd = 0; | |
380 | FD_ZERO(&readfds); | |
381 | FD_ZERO(&writefds); | |
382 | FD_ZERO(&excfds); | |
383 | select_timeout.tv_sec = 0; | |
384 | select_timeout.tv_usec = 50000; | |
385 | select(max_fd, &readfds, &writefds, | |
386 | &excfds, &select_timeout); | |
387 | } | |
388 | } | |
a7a8d378 NH |
389 | #else |
390 | slot->curl_result = curl_easy_perform(slot->curl); | |
391 | active_requests--; | |
392 | #endif | |
1d389ab6 NH |
393 | } |
394 | ||
f5dce806 | 395 | static void start_request(struct transfer_request *request) |
1d389ab6 NH |
396 | { |
397 | char *hex = sha1_to_hex(request->sha1); | |
398 | char prevfile[PATH_MAX]; | |
399 | char *url; | |
400 | char *posn; | |
401 | int prevlocal; | |
402 | unsigned char prev_buf[PREV_BUF_SIZE]; | |
403 | ssize_t prev_read = 0; | |
404 | long prev_posn = 0; | |
405 | char range[RANGE_HEADER_SIZE]; | |
406 | struct curl_slist *range_header = NULL; | |
407 | struct active_request_slot *slot; | |
408 | ||
409 | snprintf(prevfile, sizeof(prevfile), "%s.prev", request->filename); | |
410 | unlink(prevfile); | |
411 | rename(request->tmpfile, prevfile); | |
412 | unlink(request->tmpfile); | |
413 | ||
414 | request->local = open(request->tmpfile, | |
415 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
b721e01f JH |
416 | /* This could have failed due to the "lazy directory creation"; |
417 | * try to mkdir the last path component. | |
418 | */ | |
419 | if (request->local < 0 && errno == ENOENT) { | |
420 | char *dir = strrchr(request->tmpfile, '/'); | |
421 | if (dir) { | |
422 | *dir = 0; | |
423 | mkdir(request->tmpfile, 0777); | |
424 | *dir = '/'; | |
425 | } | |
426 | request->local = open(request->tmpfile, | |
427 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
428 | } | |
429 | ||
1d389ab6 NH |
430 | if (request->local < 0) { |
431 | request->state = ABORTED; | |
432 | error("Couldn't create temporary file %s for %s: %s\n", | |
433 | request->tmpfile, request->filename, strerror(errno)); | |
434 | return; | |
435 | } | |
436 | ||
437 | memset(&request->stream, 0, sizeof(request->stream)); | |
438 | ||
439 | inflateInit(&request->stream); | |
440 | ||
441 | SHA1_Init(&request->c); | |
442 | ||
443 | url = xmalloc(strlen(request->repo->base) + 50); | |
444 | request->url = xmalloc(strlen(request->repo->base) + 50); | |
445 | strcpy(url, request->repo->base); | |
446 | posn = url + strlen(request->repo->base); | |
447 | strcpy(posn, "objects/"); | |
448 | posn += 8; | |
449 | memcpy(posn, hex, 2); | |
450 | posn += 2; | |
451 | *(posn++) = '/'; | |
452 | strcpy(posn, hex + 2); | |
453 | strcpy(request->url, url); | |
454 | ||
455 | /* If a previous temp file is present, process what was already | |
456 | fetched. */ | |
457 | prevlocal = open(prevfile, O_RDONLY); | |
458 | if (prevlocal != -1) { | |
459 | do { | |
460 | prev_read = read(prevlocal, prev_buf, PREV_BUF_SIZE); | |
461 | if (prev_read>0) { | |
462 | if (fwrite_sha1_file(prev_buf, | |
463 | 1, | |
464 | prev_read, | |
465 | request) == prev_read) { | |
466 | prev_posn += prev_read; | |
467 | } else { | |
468 | prev_read = -1; | |
469 | } | |
470 | } | |
471 | } while (prev_read > 0); | |
472 | close(prevlocal); | |
473 | } | |
474 | unlink(prevfile); | |
475 | ||
476 | /* Reset inflate/SHA1 if there was an error reading the previous temp | |
477 | file; also rewind to the beginning of the local file. */ | |
478 | if (prev_read == -1) { | |
479 | memset(&request->stream, 0, sizeof(request->stream)); | |
480 | inflateInit(&request->stream); | |
481 | SHA1_Init(&request->c); | |
482 | if (prev_posn>0) { | |
483 | prev_posn = 0; | |
484 | lseek(request->local, SEEK_SET, 0); | |
485 | ftruncate(request->local, 0); | |
486 | } | |
487 | } | |
488 | ||
489 | slot = get_active_slot(); | |
490 | curl_easy_setopt(slot->curl, CURLOPT_FILE, request); | |
491 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); | |
492 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr); | |
493 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 494 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 NH |
495 | |
496 | /* If we have successfully processed data from a previous fetch | |
497 | attempt, only fetch the data we don't already have. */ | |
498 | if (prev_posn>0) { | |
499 | if (get_verbosely) | |
500 | fprintf(stderr, | |
501 | "Resuming fetch of object %s at byte %ld\n", | |
502 | hex, prev_posn); | |
503 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
504 | range_header = curl_slist_append(range_header, range); | |
505 | curl_easy_setopt(slot->curl, | |
506 | CURLOPT_HTTPHEADER, range_header); | |
507 | } | |
508 | ||
a7a8d378 | 509 | /* Try to get the request started, abort the request on error */ |
1d389ab6 NH |
510 | if (!start_active_slot(slot)) { |
511 | request->state = ABORTED; | |
512 | close(request->local); | |
513 | free(request->url); | |
514 | return; | |
515 | } | |
516 | ||
517 | request->slot = slot; | |
518 | request->state = ACTIVE; | |
519 | } | |
520 | ||
f5dce806 | 521 | static void finish_request(struct transfer_request *request) |
1d389ab6 | 522 | { |
50496b21 NH |
523 | struct stat st; |
524 | ||
1d389ab6 NH |
525 | fchmod(request->local, 0444); |
526 | close(request->local); | |
527 | ||
528 | if (request->http_code == 416) { | |
529 | fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n"); | |
530 | } else if (request->curl_result != CURLE_OK) { | |
50496b21 NH |
531 | if (stat(request->tmpfile, &st) == 0) |
532 | if (st.st_size == 0) | |
533 | unlink(request->tmpfile); | |
1d389ab6 NH |
534 | return; |
535 | } | |
536 | ||
537 | inflateEnd(&request->stream); | |
538 | SHA1_Final(request->real_sha1, &request->c); | |
539 | if (request->zret != Z_STREAM_END) { | |
540 | unlink(request->tmpfile); | |
541 | return; | |
542 | } | |
543 | if (memcmp(request->sha1, request->real_sha1, 20)) { | |
544 | unlink(request->tmpfile); | |
545 | return; | |
546 | } | |
547 | request->rename = | |
b721e01f | 548 | move_temp_to_file(request->tmpfile, request->filename); |
1d389ab6 NH |
549 | |
550 | if (request->rename == 0) | |
551 | pull_say("got %s\n", sha1_to_hex(request->sha1)); | |
552 | } | |
553 | ||
f5dce806 | 554 | static void release_request(struct transfer_request *request) |
1d389ab6 NH |
555 | { |
556 | struct transfer_request *entry = request_queue_head; | |
557 | ||
558 | if (request == request_queue_head) { | |
559 | request_queue_head = request->next; | |
560 | } else { | |
561 | while (entry->next != NULL && entry->next != request) | |
562 | entry = entry->next; | |
563 | if (entry->next == request) | |
564 | entry->next = entry->next->next; | |
565 | } | |
566 | ||
567 | free(request->url); | |
568 | free(request); | |
569 | } | |
570 | ||
a7a8d378 | 571 | #ifdef USE_CURL_MULTI |
f5dce806 | 572 | void process_curl_messages(void) |
1d389ab6 NH |
573 | { |
574 | int num_messages; | |
575 | struct active_request_slot *slot; | |
576 | struct transfer_request *request = NULL; | |
577 | CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages); | |
578 | ||
579 | while (curl_message != NULL) { | |
580 | if (curl_message->msg == CURLMSG_DONE) { | |
90279074 | 581 | int curl_result = curl_message->data.result; |
1d389ab6 NH |
582 | slot = active_queue_head; |
583 | while (slot != NULL && | |
584 | slot->curl != curl_message->easy_handle) | |
585 | slot = slot->next; | |
586 | if (slot != NULL) { | |
587 | curl_multi_remove_handle(curlm, slot->curl); | |
588 | active_requests--; | |
589 | slot->done = 1; | |
590 | slot->in_use = 0; | |
90279074 | 591 | slot->curl_result = curl_result; |
f7eb290f NH |
592 | curl_easy_getinfo(slot->curl, |
593 | CURLINFO_HTTP_CODE, | |
594 | &slot->http_code); | |
1d389ab6 NH |
595 | request = request_queue_head; |
596 | while (request != NULL && | |
597 | request->slot != slot) | |
598 | request = request->next; | |
599 | } else { | |
600 | fprintf(stderr, "Received DONE message for unknown request!\n"); | |
601 | } | |
602 | if (request != NULL) { | |
90279074 | 603 | request->curl_result = curl_result; |
f7eb290f | 604 | request->http_code = slot->http_code; |
1d389ab6 | 605 | request->slot = NULL; |
f7eb290f | 606 | request->state = COMPLETE; |
1d389ab6 NH |
607 | |
608 | /* Use alternates if necessary */ | |
f7eb290f NH |
609 | if (request->http_code == 404) { |
610 | fetch_alternates(alt->base); | |
611 | if (request->repo->next != NULL) { | |
612 | request->repo = | |
613 | request->repo->next; | |
614 | start_request(request); | |
615 | } | |
1d389ab6 NH |
616 | } else { |
617 | finish_request(request); | |
1d389ab6 NH |
618 | } |
619 | } | |
620 | } else { | |
621 | fprintf(stderr, "Unknown CURL message received: %d\n", | |
622 | (int)curl_message->msg); | |
623 | } | |
624 | curl_message = curl_multi_info_read(curlm, &num_messages); | |
625 | } | |
626 | } | |
627 | ||
f5dce806 | 628 | void process_request_queue(void) |
1d389ab6 NH |
629 | { |
630 | struct transfer_request *request = request_queue_head; | |
f1a906a3 | 631 | struct active_request_slot *slot = active_queue_head; |
1d389ab6 NH |
632 | int num_transfers; |
633 | ||
634 | while (active_requests < max_requests && request != NULL) { | |
635 | if (request->state == WAITING) { | |
11f0dafe NH |
636 | if (has_sha1_file(request->sha1)) |
637 | release_request(request); | |
638 | else | |
639 | start_request(request); | |
1d389ab6 NH |
640 | curl_multi_perform(curlm, &num_transfers); |
641 | } | |
642 | request = request->next; | |
643 | } | |
f1a906a3 NH |
644 | |
645 | while (slot != NULL) { | |
646 | if (!slot->in_use && slot->curl != NULL) { | |
647 | curl_easy_cleanup(slot->curl); | |
648 | slot->curl = NULL; | |
649 | } | |
650 | slot = slot->next; | |
651 | } | |
1d389ab6 | 652 | } |
a7a8d378 | 653 | #endif |
1d389ab6 NH |
654 | |
655 | void prefetch(unsigned char *sha1) | |
656 | { | |
657 | struct transfer_request *newreq; | |
658 | struct transfer_request *tail; | |
659 | char *filename = sha1_file_name(sha1); | |
660 | ||
661 | newreq = xmalloc(sizeof(*newreq)); | |
662 | memcpy(newreq->sha1, sha1, 20); | |
663 | newreq->repo = alt; | |
664 | newreq->url = NULL; | |
665 | newreq->local = -1; | |
666 | newreq->state = WAITING; | |
667 | snprintf(newreq->filename, sizeof(newreq->filename), "%s", filename); | |
668 | snprintf(newreq->tmpfile, sizeof(newreq->tmpfile), | |
669 | "%s.temp", filename); | |
670 | newreq->next = NULL; | |
671 | ||
672 | if (request_queue_head == NULL) { | |
673 | request_queue_head = newreq; | |
674 | } else { | |
675 | tail = request_queue_head; | |
676 | while (tail->next != NULL) { | |
677 | tail = tail->next; | |
678 | } | |
679 | tail->next = newreq; | |
680 | } | |
a7a8d378 | 681 | #ifdef USE_CURL_MULTI |
1d389ab6 NH |
682 | process_request_queue(); |
683 | process_curl_messages(); | |
a7a8d378 | 684 | #endif |
1d389ab6 NH |
685 | } |
686 | ||
b3661567 | 687 | static int fetch_index(struct alt_base *repo, unsigned char *sha1) |
182005b9 | 688 | { |
1d389ab6 | 689 | char *hex = sha1_to_hex(sha1); |
182005b9 DB |
690 | char *filename; |
691 | char *url; | |
49a0f240 | 692 | char tmpfile[PATH_MAX]; |
49a0f240 NH |
693 | long prev_posn = 0; |
694 | char range[RANGE_HEADER_SIZE]; | |
695 | struct curl_slist *range_header = NULL; | |
182005b9 DB |
696 | |
697 | FILE *indexfile; | |
1d389ab6 | 698 | struct active_request_slot *slot; |
182005b9 DB |
699 | |
700 | if (has_pack_index(sha1)) | |
701 | return 0; | |
702 | ||
703 | if (get_verbosely) | |
1d389ab6 | 704 | fprintf(stderr, "Getting index for pack %s\n", hex); |
182005b9 | 705 | |
b3661567 | 706 | url = xmalloc(strlen(repo->base) + 64); |
1d389ab6 | 707 | sprintf(url, "%s/objects/pack/pack-%s.idx", repo->base, hex); |
182005b9 DB |
708 | |
709 | filename = sha1_pack_index_name(sha1); | |
49a0f240 NH |
710 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
711 | indexfile = fopen(tmpfile, "a"); | |
182005b9 DB |
712 | if (!indexfile) |
713 | return error("Unable to open local file %s for pack index", | |
714 | filename); | |
715 | ||
1d389ab6 NH |
716 | slot = get_active_slot(); |
717 | curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile); | |
718 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
719 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 720 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 NH |
721 | slot->local = indexfile; |
722 | ||
49a0f240 NH |
723 | /* If there is data present from a previous transfer attempt, |
724 | resume where it left off */ | |
725 | prev_posn = ftell(indexfile); | |
726 | if (prev_posn>0) { | |
727 | if (get_verbosely) | |
728 | fprintf(stderr, | |
729 | "Resuming fetch of index for pack %s at byte %ld\n", | |
1d389ab6 | 730 | hex, prev_posn); |
49a0f240 NH |
731 | sprintf(range, "Range: bytes=%ld-", prev_posn); |
732 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 733 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
734 | } |
735 | ||
1d389ab6 NH |
736 | if (start_active_slot(slot)) { |
737 | run_active_slot(slot); | |
738 | if (slot->curl_result != CURLE_OK) { | |
739 | fclose(indexfile); | |
740 | return error("Unable to get pack index %s\n%s", url, | |
741 | curl_errorstr); | |
742 | } | |
743 | } else { | |
744 | return error("Unable to start request"); | |
182005b9 DB |
745 | } |
746 | ||
747 | fclose(indexfile); | |
49a0f240 | 748 | |
b721e01f | 749 | return move_temp_to_file(tmpfile, filename); |
182005b9 DB |
750 | } |
751 | ||
b3661567 | 752 | static int setup_index(struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
753 | { |
754 | struct packed_git *new_pack; | |
755 | if (has_pack_file(sha1)) | |
756 | return 0; // don't list this as something we can get | |
757 | ||
b3661567 | 758 | if (fetch_index(repo, sha1)) |
182005b9 DB |
759 | return -1; |
760 | ||
761 | new_pack = parse_pack_index(sha1); | |
b3661567 DB |
762 | new_pack->next = repo->packs; |
763 | repo->packs = new_pack; | |
182005b9 DB |
764 | return 0; |
765 | } | |
766 | ||
b3661567 DB |
767 | static int fetch_alternates(char *base) |
768 | { | |
769 | int ret = 0; | |
770 | struct buffer buffer; | |
771 | char *url; | |
772 | char *data; | |
773 | int i = 0; | |
1b0c1e67 | 774 | int http_specific = 1; |
1d389ab6 | 775 | struct alt_base *tail = alt; |
bc8f2652 | 776 | static const char null_byte = '\0'; |
1d389ab6 NH |
777 | |
778 | struct active_request_slot *slot; | |
dc1b5ea8 | 779 | |
f7eb290f NH |
780 | if (got_alternates) |
781 | return 0; | |
782 | ||
b3661567 | 783 | data = xmalloc(4096); |
bc8f2652 | 784 | buffer.size = 4096; |
b3661567 DB |
785 | buffer.posn = 0; |
786 | buffer.buffer = data; | |
787 | ||
788 | if (get_verbosely) | |
789 | fprintf(stderr, "Getting alternates list\n"); | |
790 | ||
791 | url = xmalloc(strlen(base) + 31); | |
792 | sprintf(url, "%s/objects/info/http-alternates", base); | |
793 | ||
1d389ab6 NH |
794 | slot = get_active_slot(); |
795 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
bc8f2652 SV |
796 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, |
797 | fwrite_buffer_dynamic); | |
1d389ab6 NH |
798 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
799 | if (start_active_slot(slot)) { | |
800 | run_active_slot(slot); | |
801 | if (slot->curl_result != CURLE_OK || !buffer.posn) { | |
802 | http_specific = 0; | |
803 | ||
804 | sprintf(url, "%s/objects/info/alternates", base); | |
805 | ||
806 | slot = get_active_slot(); | |
807 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
808 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, | |
bc8f2652 | 809 | fwrite_buffer_dynamic); |
1d389ab6 NH |
810 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
811 | if (start_active_slot(slot)) { | |
812 | run_active_slot(slot); | |
813 | if (slot->curl_result != CURLE_OK) { | |
bc8f2652 | 814 | free(buffer.buffer); |
f7eb290f NH |
815 | if (slot->http_code == 404) |
816 | got_alternates = 1; | |
1d389ab6 NH |
817 | return 0; |
818 | } | |
819 | } | |
b3661567 | 820 | } |
1d389ab6 | 821 | } else { |
bc8f2652 | 822 | free(buffer.buffer); |
1d389ab6 | 823 | return 0; |
b3661567 DB |
824 | } |
825 | ||
bc8f2652 SV |
826 | fwrite_buffer_dynamic(&null_byte, 1, 1, &buffer); |
827 | buffer.posn--; | |
828 | data = buffer.buffer; | |
1b0c1e67 | 829 | |
b3661567 DB |
830 | while (i < buffer.posn) { |
831 | int posn = i; | |
832 | while (posn < buffer.posn && data[posn] != '\n') | |
833 | posn++; | |
834 | if (data[posn] == '\n') { | |
1b0c1e67 DB |
835 | int okay = 0; |
836 | int serverlen = 0; | |
837 | struct alt_base *newalt; | |
838 | char *target = NULL; | |
b3661567 | 839 | if (data[i] == '/') { |
1b0c1e67 DB |
840 | serverlen = strchr(base + 8, '/') - base; |
841 | okay = 1; | |
842 | } else if (!memcmp(data + i, "../", 3)) { | |
843 | i += 3; | |
844 | serverlen = strlen(base); | |
845 | while (i + 2 < posn && | |
846 | !memcmp(data + i, "../", 3)) { | |
847 | do { | |
848 | serverlen--; | |
849 | } while (serverlen && | |
850 | base[serverlen - 1] != '/'); | |
851 | i += 3; | |
852 | } | |
853 | // If the server got removed, give up. | |
854 | okay = strchr(base, ':') - base + 3 < | |
855 | serverlen; | |
856 | } else if (http_specific) { | |
857 | char *colon = strchr(data + i, ':'); | |
858 | char *slash = strchr(data + i, '/'); | |
859 | if (colon && slash && colon < data + posn && | |
860 | slash < data + posn && colon < slash) { | |
861 | okay = 1; | |
862 | } | |
863 | } | |
864 | // skip 'objects' at end | |
865 | if (okay) { | |
866 | target = xmalloc(serverlen + posn - i - 6); | |
b3661567 DB |
867 | strncpy(target, base, serverlen); |
868 | strncpy(target + serverlen, data + i, | |
869 | posn - i - 7); | |
870 | target[serverlen + posn - i - 7] = '\0'; | |
871 | if (get_verbosely) | |
872 | fprintf(stderr, | |
873 | "Also look at %s\n", target); | |
874 | newalt = xmalloc(sizeof(*newalt)); | |
1d389ab6 | 875 | newalt->next = NULL; |
b3661567 DB |
876 | newalt->base = target; |
877 | newalt->got_indices = 0; | |
878 | newalt->packs = NULL; | |
1d389ab6 NH |
879 | while (tail->next != NULL) |
880 | tail = tail->next; | |
881 | tail->next = newalt; | |
b3661567 DB |
882 | ret++; |
883 | } | |
884 | } | |
885 | i = posn + 1; | |
886 | } | |
bc8f2652 | 887 | |
f7eb290f | 888 | got_alternates = 1; |
bc8f2652 | 889 | free(buffer.buffer); |
b3661567 DB |
890 | return ret; |
891 | } | |
892 | ||
893 | static int fetch_indices(struct alt_base *repo) | |
182005b9 DB |
894 | { |
895 | unsigned char sha1[20]; | |
896 | char *url; | |
897 | struct buffer buffer; | |
898 | char *data; | |
899 | int i = 0; | |
900 | ||
1d389ab6 NH |
901 | struct active_request_slot *slot; |
902 | ||
b3661567 | 903 | if (repo->got_indices) |
182005b9 DB |
904 | return 0; |
905 | ||
906 | data = xmalloc(4096); | |
907 | buffer.size = 4096; | |
908 | buffer.posn = 0; | |
909 | buffer.buffer = data; | |
910 | ||
911 | if (get_verbosely) | |
912 | fprintf(stderr, "Getting pack list\n"); | |
913 | ||
b3661567 DB |
914 | url = xmalloc(strlen(repo->base) + 21); |
915 | sprintf(url, "%s/objects/info/packs", repo->base); | |
182005b9 | 916 | |
1d389ab6 NH |
917 | slot = get_active_slot(); |
918 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
bc8f2652 SV |
919 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, |
920 | fwrite_buffer_dynamic); | |
1d389ab6 NH |
921 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
922 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
923 | if (start_active_slot(slot)) { | |
924 | run_active_slot(slot); | |
bc8f2652 SV |
925 | if (slot->curl_result != CURLE_OK) { |
926 | free(buffer.buffer); | |
1d389ab6 | 927 | return error("%s", curl_errorstr); |
bc8f2652 | 928 | } |
1d389ab6 | 929 | } else { |
bc8f2652 | 930 | free(buffer.buffer); |
1d389ab6 NH |
931 | return error("Unable to start request"); |
932 | } | |
182005b9 | 933 | |
bc8f2652 | 934 | data = buffer.buffer; |
b3661567 | 935 | while (i < buffer.posn) { |
182005b9 DB |
936 | switch (data[i]) { |
937 | case 'P': | |
938 | i++; | |
939 | if (i + 52 < buffer.posn && | |
940 | !strncmp(data + i, " pack-", 6) && | |
941 | !strncmp(data + i + 46, ".pack\n", 6)) { | |
942 | get_sha1_hex(data + i + 6, sha1); | |
b3661567 | 943 | setup_index(repo, sha1); |
182005b9 DB |
944 | i += 51; |
945 | break; | |
946 | } | |
947 | default: | |
948 | while (data[i] != '\n') | |
949 | i++; | |
950 | } | |
951 | i++; | |
b3661567 | 952 | } |
182005b9 | 953 | |
bc8f2652 | 954 | free(buffer.buffer); |
b3661567 | 955 | repo->got_indices = 1; |
182005b9 DB |
956 | return 0; |
957 | } | |
958 | ||
b3661567 | 959 | static int fetch_pack(struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
960 | { |
961 | char *url; | |
962 | struct packed_git *target; | |
963 | struct packed_git **lst; | |
964 | FILE *packfile; | |
965 | char *filename; | |
49a0f240 NH |
966 | char tmpfile[PATH_MAX]; |
967 | int ret; | |
968 | long prev_posn = 0; | |
969 | char range[RANGE_HEADER_SIZE]; | |
970 | struct curl_slist *range_header = NULL; | |
1d389ab6 NH |
971 | |
972 | struct active_request_slot *slot; | |
182005b9 | 973 | |
b3661567 | 974 | if (fetch_indices(repo)) |
182005b9 | 975 | return -1; |
b3661567 | 976 | target = find_sha1_pack(sha1, repo->packs); |
182005b9 | 977 | if (!target) |
b3661567 | 978 | return -1; |
182005b9 DB |
979 | |
980 | if (get_verbosely) { | |
981 | fprintf(stderr, "Getting pack %s\n", | |
982 | sha1_to_hex(target->sha1)); | |
983 | fprintf(stderr, " which contains %s\n", | |
984 | sha1_to_hex(sha1)); | |
985 | } | |
986 | ||
b3661567 | 987 | url = xmalloc(strlen(repo->base) + 65); |
182005b9 | 988 | sprintf(url, "%s/objects/pack/pack-%s.pack", |
b3661567 | 989 | repo->base, sha1_to_hex(target->sha1)); |
182005b9 DB |
990 | |
991 | filename = sha1_pack_name(target->sha1); | |
49a0f240 NH |
992 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
993 | packfile = fopen(tmpfile, "a"); | |
182005b9 DB |
994 | if (!packfile) |
995 | return error("Unable to open local file %s for pack", | |
996 | filename); | |
997 | ||
1d389ab6 NH |
998 | slot = get_active_slot(); |
999 | curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile); | |
1000 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
1001 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 1002 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 | 1003 | slot->local = packfile; |
1ddea77e | 1004 | |
49a0f240 NH |
1005 | /* If there is data present from a previous transfer attempt, |
1006 | resume where it left off */ | |
1007 | prev_posn = ftell(packfile); | |
1008 | if (prev_posn>0) { | |
1009 | if (get_verbosely) | |
1010 | fprintf(stderr, | |
1011 | "Resuming fetch of pack %s at byte %ld\n", | |
1012 | sha1_to_hex(target->sha1), prev_posn); | |
1013 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
1014 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 1015 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
1016 | } |
1017 | ||
1d389ab6 NH |
1018 | if (start_active_slot(slot)) { |
1019 | run_active_slot(slot); | |
1020 | if (slot->curl_result != CURLE_OK) { | |
1021 | fclose(packfile); | |
1022 | return error("Unable to get pack file %s\n%s", url, | |
1023 | curl_errorstr); | |
1024 | } | |
1025 | } else { | |
1026 | return error("Unable to start request"); | |
182005b9 DB |
1027 | } |
1028 | ||
1029 | fclose(packfile); | |
1030 | ||
b721e01f | 1031 | ret = move_temp_to_file(tmpfile, filename); |
49a0f240 | 1032 | if (ret) |
b721e01f | 1033 | return ret; |
49a0f240 | 1034 | |
b3661567 | 1035 | lst = &repo->packs; |
182005b9 DB |
1036 | while (*lst != target) |
1037 | lst = &((*lst)->next); | |
1038 | *lst = (*lst)->next; | |
1039 | ||
271421cd JH |
1040 | if (verify_pack(target, 0)) |
1041 | return -1; | |
182005b9 DB |
1042 | install_packed_git(target); |
1043 | ||
1044 | return 0; | |
1045 | } | |
1046 | ||
a7928f8e | 1047 | static int fetch_object(struct alt_base *repo, unsigned char *sha1) |
6eb7ed54 DB |
1048 | { |
1049 | char *hex = sha1_to_hex(sha1); | |
09d92083 | 1050 | int ret; |
1d389ab6 | 1051 | struct transfer_request *request = request_queue_head; |
1d389ab6 NH |
1052 | |
1053 | while (request != NULL && memcmp(request->sha1, sha1, 20)) | |
1054 | request = request->next; | |
1055 | if (request == NULL) | |
1056 | return error("Couldn't find request for %s in the queue", hex); | |
1057 | ||
11f0dafe NH |
1058 | if (has_sha1_file(request->sha1)) { |
1059 | release_request(request); | |
1060 | return 0; | |
1061 | } | |
1062 | ||
a7a8d378 | 1063 | #ifdef USE_CURL_MULTI |
1d389ab6 | 1064 | while (request->state == WAITING) { |
f5dce806 | 1065 | int num_transfers; |
1d389ab6 NH |
1066 | curl_multi_perform(curlm, &num_transfers); |
1067 | if (num_transfers < active_requests) { | |
1068 | process_curl_messages(); | |
1069 | process_request_queue(); | |
1070 | } | |
1071 | } | |
a7a8d378 NH |
1072 | #else |
1073 | start_request(request); | |
1074 | #endif | |
6eb7ed54 | 1075 | |
a7a8d378 | 1076 | while (request->state == ACTIVE) { |
1d389ab6 | 1077 | run_active_slot(request->slot); |
a7a8d378 NH |
1078 | #ifndef USE_CURL_MULTI |
1079 | request->curl_result = request->slot->curl_result; | |
f7eb290f | 1080 | request->http_code = request->slot->http_code; |
a7a8d378 NH |
1081 | request->slot = NULL; |
1082 | ||
1083 | /* Use alternates if necessary */ | |
f7eb290f NH |
1084 | if (request->http_code == 404) { |
1085 | fetch_alternates(alt->base); | |
1086 | if (request->repo->next != NULL) { | |
1087 | request->repo = request->repo->next; | |
1088 | start_request(request); | |
1089 | } | |
a7a8d378 NH |
1090 | } else { |
1091 | finish_request(request); | |
1092 | request->state = COMPLETE; | |
1093 | } | |
1094 | #endif | |
1095 | } | |
6eb7ed54 | 1096 | |
1d389ab6 NH |
1097 | if (request->state == ABORTED) { |
1098 | release_request(request); | |
1099 | return error("Request for %s aborted", hex); | |
49a0f240 | 1100 | } |
49a0f240 | 1101 | |
1d389ab6 | 1102 | if (request->curl_result != CURLE_OK && request->http_code != 416) { |
e2029eb9 PB |
1103 | if (request->http_code == 404) |
1104 | ret = -1; /* Be silent, it is probably in a pack. */ | |
1105 | else | |
1106 | ret = error("%s (curl_result = %d, http_code = %ld, sha1 = %s)", | |
1107 | request->errorstr, request->curl_result, | |
1108 | request->http_code, hex); | |
1d389ab6 NH |
1109 | release_request(request); |
1110 | return ret; | |
49a0f240 NH |
1111 | } |
1112 | ||
1d389ab6 NH |
1113 | if (request->zret != Z_STREAM_END) { |
1114 | ret = error("File %s (%s) corrupt\n", hex, request->url); | |
1115 | release_request(request); | |
1116 | return ret; | |
49a0f240 NH |
1117 | } |
1118 | ||
1d389ab6 NH |
1119 | if (memcmp(request->sha1, request->real_sha1, 20)) { |
1120 | release_request(request); | |
1121 | return error("File %s has bad hash\n", hex); | |
182005b9 | 1122 | } |
6eb7ed54 | 1123 | |
1d389ab6 NH |
1124 | if (request->rename < 0) { |
1125 | ret = error("unable to write sha1 filename %s: %s", | |
1126 | request->filename, | |
1127 | strerror(request->rename)); | |
1128 | release_request(request); | |
1129 | return ret; | |
6eb7ed54 | 1130 | } |
49a0f240 | 1131 | |
1d389ab6 | 1132 | release_request(request); |
6eb7ed54 DB |
1133 | return 0; |
1134 | } | |
1135 | ||
b3661567 DB |
1136 | int fetch(unsigned char *sha1) |
1137 | { | |
1138 | struct alt_base *altbase = alt; | |
1d389ab6 NH |
1139 | |
1140 | if (!fetch_object(altbase, sha1)) | |
1141 | return 0; | |
b3661567 | 1142 | while (altbase) { |
b3661567 DB |
1143 | if (!fetch_pack(altbase, sha1)) |
1144 | return 0; | |
f7eb290f | 1145 | fetch_alternates(alt->base); |
b3661567 DB |
1146 | altbase = altbase->next; |
1147 | } | |
1148 | return error("Unable to find %s under %s\n", sha1_to_hex(sha1), | |
1d389ab6 | 1149 | alt->base); |
b3661567 DB |
1150 | } |
1151 | ||
94fa447a JH |
1152 | static inline int needs_quote(int ch) |
1153 | { | |
1154 | switch (ch) { | |
1155 | case '/': case '-': case '.': | |
1156 | case 'A'...'Z': case 'a'...'z': case '0'...'9': | |
1157 | return 0; | |
1158 | default: | |
1159 | return 1; | |
1160 | } | |
1161 | } | |
1162 | ||
1163 | static inline int hex(int v) | |
1164 | { | |
1165 | if (v < 10) return '0' + v; | |
1166 | else return 'A' + v - 10; | |
1167 | } | |
1168 | ||
1169 | static char *quote_ref_url(const char *base, const char *ref) | |
1170 | { | |
1171 | const char *cp; | |
1172 | char *dp, *qref; | |
1173 | int len, baselen, ch; | |
1174 | ||
1175 | baselen = strlen(base); | |
1176 | len = baselen + 6; /* "refs/" + NUL */ | |
1177 | for (cp = ref; (ch = *cp) != 0; cp++, len++) | |
1178 | if (needs_quote(ch)) | |
1179 | len += 2; /* extra two hex plus replacement % */ | |
1180 | qref = xmalloc(len); | |
1181 | memcpy(qref, base, baselen); | |
1182 | memcpy(qref + baselen, "refs/", 5); | |
1183 | for (cp = ref, dp = qref + baselen + 5; (ch = *cp) != 0; cp++) { | |
1184 | if (needs_quote(ch)) { | |
1185 | *dp++ = '%'; | |
1186 | *dp++ = hex((ch >> 4) & 0xF); | |
1187 | *dp++ = hex(ch & 0xF); | |
1188 | } | |
1189 | else | |
1190 | *dp++ = ch; | |
1191 | } | |
1192 | *dp = 0; | |
1193 | ||
1194 | return qref; | |
1195 | } | |
1196 | ||
cd541a68 DB |
1197 | int fetch_ref(char *ref, unsigned char *sha1) |
1198 | { | |
94fa447a | 1199 | char *url; |
fa3e0655 DB |
1200 | char hex[42]; |
1201 | struct buffer buffer; | |
1d389ab6 NH |
1202 | char *base = alt->base; |
1203 | struct active_request_slot *slot; | |
fa3e0655 DB |
1204 | buffer.size = 41; |
1205 | buffer.posn = 0; | |
1206 | buffer.buffer = hex; | |
1207 | hex[41] = '\0'; | |
1208 | ||
94fa447a | 1209 | url = quote_ref_url(base, ref); |
1d389ab6 NH |
1210 | slot = get_active_slot(); |
1211 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
1212 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
1213 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
1214 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
1215 | if (start_active_slot(slot)) { | |
1216 | run_active_slot(slot); | |
1217 | if (slot->curl_result != CURLE_OK) | |
1218 | return error("Couldn't get %s for %s\n%s", | |
1219 | url, ref, curl_errorstr); | |
1220 | } else { | |
1221 | return error("Unable to start request"); | |
1222 | } | |
fa3e0655 DB |
1223 | |
1224 | hex[40] = '\0'; | |
1225 | get_sha1_hex(hex, sha1); | |
1226 | return 0; | |
cd541a68 DB |
1227 | } |
1228 | ||
6eb7ed54 DB |
1229 | int main(int argc, char **argv) |
1230 | { | |
1231 | char *commit_id; | |
1232 | char *url; | |
1233 | int arg = 1; | |
1d389ab6 | 1234 | struct active_request_slot *slot; |
e0004e28 NH |
1235 | char *low_speed_limit; |
1236 | char *low_speed_time; | |
7b9ae53e NH |
1237 | char *wait_url; |
1238 | int rc = 0; | |
6eb7ed54 DB |
1239 | |
1240 | while (arg < argc && argv[arg][0] == '-') { | |
1241 | if (argv[arg][1] == 't') { | |
4250a5e5 | 1242 | get_tree = 1; |
6eb7ed54 | 1243 | } else if (argv[arg][1] == 'c') { |
4250a5e5 | 1244 | get_history = 1; |
6eb7ed54 | 1245 | } else if (argv[arg][1] == 'a') { |
4250a5e5 DB |
1246 | get_all = 1; |
1247 | get_tree = 1; | |
1248 | get_history = 1; | |
e78d9772 JH |
1249 | } else if (argv[arg][1] == 'v') { |
1250 | get_verbosely = 1; | |
fa3e0655 DB |
1251 | } else if (argv[arg][1] == 'w') { |
1252 | write_ref = argv[arg + 1]; | |
1253 | arg++; | |
820eca68 DB |
1254 | } else if (!strcmp(argv[arg], "--recover")) { |
1255 | get_recover = 1; | |
6eb7ed54 DB |
1256 | } |
1257 | arg++; | |
1258 | } | |
1259 | if (argc < arg + 2) { | |
215a7ad1 | 1260 | usage("git-http-fetch [-c] [-t] [-a] [-d] [-v] [--recover] [-w ref] commit-id url"); |
6eb7ed54 DB |
1261 | return 1; |
1262 | } | |
1263 | commit_id = argv[arg]; | |
1264 | url = argv[arg + 1]; | |
1265 | ||
6eb7ed54 DB |
1266 | curl_global_init(CURL_GLOBAL_ALL); |
1267 | ||
a7a8d378 | 1268 | #ifdef USE_CURL_MULTI |
f5dce806 PH |
1269 | { |
1270 | char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS"); | |
1271 | if (http_max_requests != NULL) | |
1272 | max_requests = atoi(http_max_requests); | |
1273 | } | |
38079239 | 1274 | |
1d389ab6 NH |
1275 | curlm = curl_multi_init(); |
1276 | if (curlm == NULL) { | |
1277 | fprintf(stderr, "Error creating curl multi handle.\n"); | |
1278 | return 1; | |
1279 | } | |
a7a8d378 | 1280 | #endif |
d402d556 NH |
1281 | |
1282 | if (getenv("GIT_SSL_NO_VERIFY")) | |
1283 | curl_ssl_verify = 0; | |
1284 | ||
1285 | ssl_cert = getenv("GIT_SSL_CERT"); | |
1286 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
1287 | ssl_key = getenv("GIT_SSL_KEY"); | |
1288 | #endif | |
1289 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
1290 | ssl_capath = getenv("GIT_SSL_CAPATH"); | |
1291 | #endif | |
1292 | ssl_cainfo = getenv("GIT_SSL_CAINFO"); | |
1293 | ||
e0004e28 NH |
1294 | low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT"); |
1295 | if (low_speed_limit != NULL) | |
1296 | curl_low_speed_limit = strtol(low_speed_limit, NULL, 10); | |
1297 | low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME"); | |
1298 | if (low_speed_time != NULL) | |
1299 | curl_low_speed_time = strtol(low_speed_time, NULL, 10); | |
1300 | ||
d402d556 NH |
1301 | git_config(http_options); |
1302 | ||
1303 | if (curl_ssl_verify == -1) | |
1304 | curl_ssl_verify = 1; | |
1305 | ||
1306 | #ifdef USE_CURL_MULTI | |
1307 | if (max_requests < 1) | |
1308 | max_requests = DEFAULT_MAX_REQUESTS; | |
1309 | #endif | |
1310 | ||
03126006 | 1311 | pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache"); |
1db69b57 | 1312 | no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:"); |
49a0f240 | 1313 | no_range_header = curl_slist_append(no_range_header, "Range:"); |
6eb7ed54 | 1314 | |
7baa3e86 JS |
1315 | #ifndef NO_CURL_EASY_DUPHANDLE |
1316 | curl_default = get_curl_handle(); | |
9f6cf65e | 1317 | #endif |
3dcb90f5 | 1318 | |
b3661567 DB |
1319 | alt = xmalloc(sizeof(*alt)); |
1320 | alt->base = url; | |
1321 | alt->got_indices = 0; | |
1322 | alt->packs = NULL; | |
1323 | alt->next = NULL; | |
6eb7ed54 | 1324 | |
4250a5e5 | 1325 | if (pull(commit_id)) |
7b9ae53e | 1326 | rc = 1; |
6eb7ed54 | 1327 | |
03126006 | 1328 | curl_slist_free_all(pragma_header); |
1db69b57 | 1329 | curl_slist_free_all(no_pragma_header); |
1d389ab6 | 1330 | curl_slist_free_all(no_range_header); |
7baa3e86 | 1331 | #ifndef NO_CURL_EASY_DUPHANDLE |
1d389ab6 | 1332 | curl_easy_cleanup(curl_default); |
7baa3e86 | 1333 | #endif |
1d389ab6 NH |
1334 | slot = active_queue_head; |
1335 | while (slot != NULL) { | |
7b9ae53e NH |
1336 | if (slot->in_use) { |
1337 | if (get_verbosely) { | |
1338 | curl_easy_getinfo(slot->curl, | |
1339 | CURLINFO_EFFECTIVE_URL, | |
1340 | &wait_url); | |
1341 | fprintf(stderr, "Waiting for %s\n", wait_url); | |
1342 | } | |
1343 | run_active_slot(slot); | |
1344 | } | |
f1a906a3 NH |
1345 | if (slot->curl != NULL) |
1346 | curl_easy_cleanup(slot->curl); | |
1d389ab6 NH |
1347 | slot = slot->next; |
1348 | } | |
a7a8d378 | 1349 | #ifdef USE_CURL_MULTI |
1d389ab6 | 1350 | curl_multi_cleanup(curlm); |
a7a8d378 | 1351 | #endif |
6eb7ed54 | 1352 | curl_global_cleanup(); |
7b9ae53e | 1353 | return rc; |
6eb7ed54 | 1354 | } |