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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 | ||
66c9ec25 JW |
272 | curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1); |
273 | ||
7baa3e86 JS |
274 | return result; |
275 | } | |
276 | ||
f5dce806 | 277 | static struct active_request_slot *get_active_slot(void) |
1d389ab6 NH |
278 | { |
279 | struct active_request_slot *slot = active_queue_head; | |
280 | struct active_request_slot *newslot; | |
a7a8d378 NH |
281 | |
282 | #ifdef USE_CURL_MULTI | |
1d389ab6 NH |
283 | int num_transfers; |
284 | ||
285 | /* Wait for a slot to open up if the queue is full */ | |
286 | while (active_requests >= max_requests) { | |
287 | curl_multi_perform(curlm, &num_transfers); | |
288 | if (num_transfers < active_requests) { | |
289 | process_curl_messages(); | |
290 | } | |
291 | } | |
a7a8d378 | 292 | #endif |
1d389ab6 NH |
293 | |
294 | while (slot != NULL && slot->in_use) { | |
295 | slot = slot->next; | |
296 | } | |
297 | if (slot == NULL) { | |
298 | newslot = xmalloc(sizeof(*newslot)); | |
f1a906a3 | 299 | newslot->curl = NULL; |
1d389ab6 NH |
300 | newslot->in_use = 0; |
301 | newslot->next = NULL; | |
302 | ||
303 | slot = active_queue_head; | |
304 | if (slot == NULL) { | |
305 | active_queue_head = newslot; | |
306 | } else { | |
307 | while (slot->next != NULL) { | |
308 | slot = slot->next; | |
309 | } | |
310 | slot->next = newslot; | |
311 | } | |
312 | slot = newslot; | |
313 | } | |
314 | ||
f1a906a3 NH |
315 | if (slot->curl == NULL) { |
316 | #ifdef NO_CURL_EASY_DUPHANDLE | |
317 | slot->curl = get_curl_handle(); | |
318 | #else | |
319 | slot->curl = curl_easy_duphandle(curl_default); | |
320 | #endif | |
321 | } | |
322 | ||
1d389ab6 NH |
323 | active_requests++; |
324 | slot->in_use = 1; | |
325 | slot->done = 0; | |
326 | slot->local = NULL; | |
03126006 | 327 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header); |
1d389ab6 NH |
328 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_range_header); |
329 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr); | |
330 | ||
331 | return slot; | |
332 | } | |
333 | ||
f5dce806 | 334 | static int start_active_slot(struct active_request_slot *slot) |
1d389ab6 | 335 | { |
a7a8d378 | 336 | #ifdef USE_CURL_MULTI |
1d389ab6 NH |
337 | CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl); |
338 | ||
339 | if (curlm_result != CURLM_OK && | |
340 | curlm_result != CURLM_CALL_MULTI_PERFORM) { | |
341 | active_requests--; | |
342 | slot->in_use = 0; | |
343 | return 0; | |
344 | } | |
a7a8d378 | 345 | #endif |
1d389ab6 NH |
346 | return 1; |
347 | } | |
348 | ||
f5dce806 | 349 | static void run_active_slot(struct active_request_slot *slot) |
1d389ab6 | 350 | { |
a7a8d378 | 351 | #ifdef USE_CURL_MULTI |
1d389ab6 NH |
352 | int num_transfers; |
353 | long last_pos = 0; | |
354 | long current_pos; | |
355 | fd_set readfds; | |
356 | fd_set writefds; | |
357 | fd_set excfds; | |
358 | int max_fd; | |
359 | struct timeval select_timeout; | |
360 | CURLMcode curlm_result; | |
361 | ||
362 | while (!slot->done) { | |
363 | data_received = 0; | |
364 | do { | |
365 | curlm_result = curl_multi_perform(curlm, | |
366 | &num_transfers); | |
367 | } while (curlm_result == CURLM_CALL_MULTI_PERFORM); | |
368 | if (num_transfers < active_requests) { | |
369 | process_curl_messages(); | |
370 | process_request_queue(); | |
371 | } | |
372 | ||
373 | if (!data_received && slot->local != NULL) { | |
374 | current_pos = ftell(slot->local); | |
375 | if (current_pos > last_pos) | |
376 | data_received++; | |
377 | last_pos = current_pos; | |
378 | } | |
379 | ||
380 | if (!slot->done && !data_received) { | |
381 | max_fd = 0; | |
382 | FD_ZERO(&readfds); | |
383 | FD_ZERO(&writefds); | |
384 | FD_ZERO(&excfds); | |
385 | select_timeout.tv_sec = 0; | |
386 | select_timeout.tv_usec = 50000; | |
387 | select(max_fd, &readfds, &writefds, | |
388 | &excfds, &select_timeout); | |
389 | } | |
390 | } | |
a7a8d378 NH |
391 | #else |
392 | slot->curl_result = curl_easy_perform(slot->curl); | |
393 | active_requests--; | |
394 | #endif | |
1d389ab6 NH |
395 | } |
396 | ||
f5dce806 | 397 | static void start_request(struct transfer_request *request) |
1d389ab6 NH |
398 | { |
399 | char *hex = sha1_to_hex(request->sha1); | |
400 | char prevfile[PATH_MAX]; | |
401 | char *url; | |
402 | char *posn; | |
403 | int prevlocal; | |
404 | unsigned char prev_buf[PREV_BUF_SIZE]; | |
405 | ssize_t prev_read = 0; | |
406 | long prev_posn = 0; | |
407 | char range[RANGE_HEADER_SIZE]; | |
408 | struct curl_slist *range_header = NULL; | |
409 | struct active_request_slot *slot; | |
410 | ||
411 | snprintf(prevfile, sizeof(prevfile), "%s.prev", request->filename); | |
412 | unlink(prevfile); | |
413 | rename(request->tmpfile, prevfile); | |
414 | unlink(request->tmpfile); | |
415 | ||
416 | request->local = open(request->tmpfile, | |
417 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
b721e01f JH |
418 | /* This could have failed due to the "lazy directory creation"; |
419 | * try to mkdir the last path component. | |
420 | */ | |
421 | if (request->local < 0 && errno == ENOENT) { | |
422 | char *dir = strrchr(request->tmpfile, '/'); | |
423 | if (dir) { | |
424 | *dir = 0; | |
425 | mkdir(request->tmpfile, 0777); | |
426 | *dir = '/'; | |
427 | } | |
428 | request->local = open(request->tmpfile, | |
429 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
430 | } | |
431 | ||
1d389ab6 NH |
432 | if (request->local < 0) { |
433 | request->state = ABORTED; | |
434 | error("Couldn't create temporary file %s for %s: %s\n", | |
435 | request->tmpfile, request->filename, strerror(errno)); | |
436 | return; | |
437 | } | |
438 | ||
439 | memset(&request->stream, 0, sizeof(request->stream)); | |
440 | ||
441 | inflateInit(&request->stream); | |
442 | ||
443 | SHA1_Init(&request->c); | |
444 | ||
445 | url = xmalloc(strlen(request->repo->base) + 50); | |
446 | request->url = xmalloc(strlen(request->repo->base) + 50); | |
447 | strcpy(url, request->repo->base); | |
448 | posn = url + strlen(request->repo->base); | |
449 | strcpy(posn, "objects/"); | |
450 | posn += 8; | |
451 | memcpy(posn, hex, 2); | |
452 | posn += 2; | |
453 | *(posn++) = '/'; | |
454 | strcpy(posn, hex + 2); | |
455 | strcpy(request->url, url); | |
456 | ||
457 | /* If a previous temp file is present, process what was already | |
458 | fetched. */ | |
459 | prevlocal = open(prevfile, O_RDONLY); | |
460 | if (prevlocal != -1) { | |
461 | do { | |
462 | prev_read = read(prevlocal, prev_buf, PREV_BUF_SIZE); | |
463 | if (prev_read>0) { | |
464 | if (fwrite_sha1_file(prev_buf, | |
465 | 1, | |
466 | prev_read, | |
467 | request) == prev_read) { | |
468 | prev_posn += prev_read; | |
469 | } else { | |
470 | prev_read = -1; | |
471 | } | |
472 | } | |
473 | } while (prev_read > 0); | |
474 | close(prevlocal); | |
475 | } | |
476 | unlink(prevfile); | |
477 | ||
478 | /* Reset inflate/SHA1 if there was an error reading the previous temp | |
479 | file; also rewind to the beginning of the local file. */ | |
480 | if (prev_read == -1) { | |
481 | memset(&request->stream, 0, sizeof(request->stream)); | |
482 | inflateInit(&request->stream); | |
483 | SHA1_Init(&request->c); | |
484 | if (prev_posn>0) { | |
485 | prev_posn = 0; | |
486 | lseek(request->local, SEEK_SET, 0); | |
487 | ftruncate(request->local, 0); | |
488 | } | |
489 | } | |
490 | ||
491 | slot = get_active_slot(); | |
492 | curl_easy_setopt(slot->curl, CURLOPT_FILE, request); | |
493 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); | |
494 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr); | |
495 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 496 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 NH |
497 | |
498 | /* If we have successfully processed data from a previous fetch | |
499 | attempt, only fetch the data we don't already have. */ | |
500 | if (prev_posn>0) { | |
501 | if (get_verbosely) | |
502 | fprintf(stderr, | |
503 | "Resuming fetch of object %s at byte %ld\n", | |
504 | hex, prev_posn); | |
505 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
506 | range_header = curl_slist_append(range_header, range); | |
507 | curl_easy_setopt(slot->curl, | |
508 | CURLOPT_HTTPHEADER, range_header); | |
509 | } | |
510 | ||
a7a8d378 | 511 | /* Try to get the request started, abort the request on error */ |
1d389ab6 NH |
512 | if (!start_active_slot(slot)) { |
513 | request->state = ABORTED; | |
514 | close(request->local); | |
515 | free(request->url); | |
516 | return; | |
517 | } | |
518 | ||
519 | request->slot = slot; | |
520 | request->state = ACTIVE; | |
521 | } | |
522 | ||
f5dce806 | 523 | static void finish_request(struct transfer_request *request) |
1d389ab6 | 524 | { |
50496b21 NH |
525 | struct stat st; |
526 | ||
1d389ab6 NH |
527 | fchmod(request->local, 0444); |
528 | close(request->local); | |
529 | ||
530 | if (request->http_code == 416) { | |
531 | fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n"); | |
532 | } else if (request->curl_result != CURLE_OK) { | |
50496b21 NH |
533 | if (stat(request->tmpfile, &st) == 0) |
534 | if (st.st_size == 0) | |
535 | unlink(request->tmpfile); | |
1d389ab6 NH |
536 | return; |
537 | } | |
538 | ||
539 | inflateEnd(&request->stream); | |
540 | SHA1_Final(request->real_sha1, &request->c); | |
541 | if (request->zret != Z_STREAM_END) { | |
542 | unlink(request->tmpfile); | |
543 | return; | |
544 | } | |
545 | if (memcmp(request->sha1, request->real_sha1, 20)) { | |
546 | unlink(request->tmpfile); | |
547 | return; | |
548 | } | |
549 | request->rename = | |
b721e01f | 550 | move_temp_to_file(request->tmpfile, request->filename); |
1d389ab6 NH |
551 | |
552 | if (request->rename == 0) | |
553 | pull_say("got %s\n", sha1_to_hex(request->sha1)); | |
554 | } | |
555 | ||
f5dce806 | 556 | static void release_request(struct transfer_request *request) |
1d389ab6 NH |
557 | { |
558 | struct transfer_request *entry = request_queue_head; | |
559 | ||
560 | if (request == request_queue_head) { | |
561 | request_queue_head = request->next; | |
562 | } else { | |
563 | while (entry->next != NULL && entry->next != request) | |
564 | entry = entry->next; | |
565 | if (entry->next == request) | |
566 | entry->next = entry->next->next; | |
567 | } | |
568 | ||
569 | free(request->url); | |
570 | free(request); | |
571 | } | |
572 | ||
a7a8d378 | 573 | #ifdef USE_CURL_MULTI |
f4f440a0 | 574 | static void process_curl_messages(void) |
1d389ab6 NH |
575 | { |
576 | int num_messages; | |
577 | struct active_request_slot *slot; | |
578 | struct transfer_request *request = NULL; | |
579 | CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages); | |
580 | ||
581 | while (curl_message != NULL) { | |
582 | if (curl_message->msg == CURLMSG_DONE) { | |
90279074 | 583 | int curl_result = curl_message->data.result; |
1d389ab6 NH |
584 | slot = active_queue_head; |
585 | while (slot != NULL && | |
586 | slot->curl != curl_message->easy_handle) | |
587 | slot = slot->next; | |
588 | if (slot != NULL) { | |
589 | curl_multi_remove_handle(curlm, slot->curl); | |
590 | active_requests--; | |
591 | slot->done = 1; | |
592 | slot->in_use = 0; | |
90279074 | 593 | slot->curl_result = curl_result; |
f7eb290f NH |
594 | curl_easy_getinfo(slot->curl, |
595 | CURLINFO_HTTP_CODE, | |
596 | &slot->http_code); | |
1d389ab6 NH |
597 | request = request_queue_head; |
598 | while (request != NULL && | |
599 | request->slot != slot) | |
600 | request = request->next; | |
601 | } else { | |
602 | fprintf(stderr, "Received DONE message for unknown request!\n"); | |
603 | } | |
604 | if (request != NULL) { | |
90279074 | 605 | request->curl_result = curl_result; |
f7eb290f | 606 | request->http_code = slot->http_code; |
1d389ab6 | 607 | request->slot = NULL; |
f7eb290f | 608 | request->state = COMPLETE; |
1d389ab6 NH |
609 | |
610 | /* Use alternates if necessary */ | |
f7eb290f NH |
611 | if (request->http_code == 404) { |
612 | fetch_alternates(alt->base); | |
613 | if (request->repo->next != NULL) { | |
614 | request->repo = | |
615 | request->repo->next; | |
616 | start_request(request); | |
617 | } | |
1d389ab6 NH |
618 | } else { |
619 | finish_request(request); | |
1d389ab6 NH |
620 | } |
621 | } | |
622 | } else { | |
623 | fprintf(stderr, "Unknown CURL message received: %d\n", | |
624 | (int)curl_message->msg); | |
625 | } | |
626 | curl_message = curl_multi_info_read(curlm, &num_messages); | |
627 | } | |
628 | } | |
629 | ||
f4f440a0 | 630 | static void process_request_queue(void) |
1d389ab6 NH |
631 | { |
632 | struct transfer_request *request = request_queue_head; | |
f1a906a3 | 633 | struct active_request_slot *slot = active_queue_head; |
1d389ab6 NH |
634 | int num_transfers; |
635 | ||
636 | while (active_requests < max_requests && request != NULL) { | |
637 | if (request->state == WAITING) { | |
11f0dafe NH |
638 | if (has_sha1_file(request->sha1)) |
639 | release_request(request); | |
640 | else | |
641 | start_request(request); | |
1d389ab6 NH |
642 | curl_multi_perform(curlm, &num_transfers); |
643 | } | |
644 | request = request->next; | |
645 | } | |
f1a906a3 NH |
646 | |
647 | while (slot != NULL) { | |
648 | if (!slot->in_use && slot->curl != NULL) { | |
649 | curl_easy_cleanup(slot->curl); | |
650 | slot->curl = NULL; | |
651 | } | |
652 | slot = slot->next; | |
653 | } | |
1d389ab6 | 654 | } |
a7a8d378 | 655 | #endif |
1d389ab6 NH |
656 | |
657 | void prefetch(unsigned char *sha1) | |
658 | { | |
659 | struct transfer_request *newreq; | |
660 | struct transfer_request *tail; | |
661 | char *filename = sha1_file_name(sha1); | |
662 | ||
663 | newreq = xmalloc(sizeof(*newreq)); | |
664 | memcpy(newreq->sha1, sha1, 20); | |
665 | newreq->repo = alt; | |
666 | newreq->url = NULL; | |
667 | newreq->local = -1; | |
668 | newreq->state = WAITING; | |
669 | snprintf(newreq->filename, sizeof(newreq->filename), "%s", filename); | |
670 | snprintf(newreq->tmpfile, sizeof(newreq->tmpfile), | |
671 | "%s.temp", filename); | |
672 | newreq->next = NULL; | |
673 | ||
674 | if (request_queue_head == NULL) { | |
675 | request_queue_head = newreq; | |
676 | } else { | |
677 | tail = request_queue_head; | |
678 | while (tail->next != NULL) { | |
679 | tail = tail->next; | |
680 | } | |
681 | tail->next = newreq; | |
682 | } | |
a7a8d378 | 683 | #ifdef USE_CURL_MULTI |
1d389ab6 NH |
684 | process_request_queue(); |
685 | process_curl_messages(); | |
a7a8d378 | 686 | #endif |
1d389ab6 NH |
687 | } |
688 | ||
b3661567 | 689 | static int fetch_index(struct alt_base *repo, unsigned char *sha1) |
182005b9 | 690 | { |
1d389ab6 | 691 | char *hex = sha1_to_hex(sha1); |
182005b9 DB |
692 | char *filename; |
693 | char *url; | |
49a0f240 | 694 | char tmpfile[PATH_MAX]; |
49a0f240 NH |
695 | long prev_posn = 0; |
696 | char range[RANGE_HEADER_SIZE]; | |
697 | struct curl_slist *range_header = NULL; | |
182005b9 DB |
698 | |
699 | FILE *indexfile; | |
1d389ab6 | 700 | struct active_request_slot *slot; |
182005b9 DB |
701 | |
702 | if (has_pack_index(sha1)) | |
703 | return 0; | |
704 | ||
705 | if (get_verbosely) | |
1d389ab6 | 706 | fprintf(stderr, "Getting index for pack %s\n", hex); |
182005b9 | 707 | |
b3661567 | 708 | url = xmalloc(strlen(repo->base) + 64); |
1d389ab6 | 709 | sprintf(url, "%s/objects/pack/pack-%s.idx", repo->base, hex); |
182005b9 DB |
710 | |
711 | filename = sha1_pack_index_name(sha1); | |
49a0f240 NH |
712 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
713 | indexfile = fopen(tmpfile, "a"); | |
182005b9 DB |
714 | if (!indexfile) |
715 | return error("Unable to open local file %s for pack index", | |
716 | filename); | |
717 | ||
1d389ab6 NH |
718 | slot = get_active_slot(); |
719 | curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile); | |
720 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
721 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 722 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 NH |
723 | slot->local = indexfile; |
724 | ||
49a0f240 NH |
725 | /* If there is data present from a previous transfer attempt, |
726 | resume where it left off */ | |
727 | prev_posn = ftell(indexfile); | |
728 | if (prev_posn>0) { | |
729 | if (get_verbosely) | |
730 | fprintf(stderr, | |
731 | "Resuming fetch of index for pack %s at byte %ld\n", | |
1d389ab6 | 732 | hex, prev_posn); |
49a0f240 NH |
733 | sprintf(range, "Range: bytes=%ld-", prev_posn); |
734 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 735 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
736 | } |
737 | ||
1d389ab6 NH |
738 | if (start_active_slot(slot)) { |
739 | run_active_slot(slot); | |
740 | if (slot->curl_result != CURLE_OK) { | |
741 | fclose(indexfile); | |
742 | return error("Unable to get pack index %s\n%s", url, | |
743 | curl_errorstr); | |
744 | } | |
745 | } else { | |
746 | return error("Unable to start request"); | |
182005b9 DB |
747 | } |
748 | ||
749 | fclose(indexfile); | |
49a0f240 | 750 | |
b721e01f | 751 | return move_temp_to_file(tmpfile, filename); |
182005b9 DB |
752 | } |
753 | ||
b3661567 | 754 | static int setup_index(struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
755 | { |
756 | struct packed_git *new_pack; | |
757 | if (has_pack_file(sha1)) | |
758 | return 0; // don't list this as something we can get | |
759 | ||
b3661567 | 760 | if (fetch_index(repo, sha1)) |
182005b9 DB |
761 | return -1; |
762 | ||
763 | new_pack = parse_pack_index(sha1); | |
b3661567 DB |
764 | new_pack->next = repo->packs; |
765 | repo->packs = new_pack; | |
182005b9 DB |
766 | return 0; |
767 | } | |
768 | ||
b3661567 DB |
769 | static int fetch_alternates(char *base) |
770 | { | |
771 | int ret = 0; | |
772 | struct buffer buffer; | |
773 | char *url; | |
774 | char *data; | |
775 | int i = 0; | |
1b0c1e67 | 776 | int http_specific = 1; |
1d389ab6 | 777 | struct alt_base *tail = alt; |
bc8f2652 | 778 | static const char null_byte = '\0'; |
1d389ab6 NH |
779 | |
780 | struct active_request_slot *slot; | |
dc1b5ea8 | 781 | |
f7eb290f NH |
782 | if (got_alternates) |
783 | return 0; | |
784 | ||
b3661567 | 785 | data = xmalloc(4096); |
bc8f2652 | 786 | buffer.size = 4096; |
b3661567 DB |
787 | buffer.posn = 0; |
788 | buffer.buffer = data; | |
789 | ||
790 | if (get_verbosely) | |
791 | fprintf(stderr, "Getting alternates list\n"); | |
792 | ||
793 | url = xmalloc(strlen(base) + 31); | |
794 | sprintf(url, "%s/objects/info/http-alternates", base); | |
795 | ||
1d389ab6 NH |
796 | slot = get_active_slot(); |
797 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
bc8f2652 SV |
798 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, |
799 | fwrite_buffer_dynamic); | |
1d389ab6 NH |
800 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
801 | if (start_active_slot(slot)) { | |
802 | run_active_slot(slot); | |
803 | if (slot->curl_result != CURLE_OK || !buffer.posn) { | |
804 | http_specific = 0; | |
805 | ||
806 | sprintf(url, "%s/objects/info/alternates", base); | |
807 | ||
808 | slot = get_active_slot(); | |
809 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
810 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, | |
bc8f2652 | 811 | fwrite_buffer_dynamic); |
1d389ab6 NH |
812 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
813 | if (start_active_slot(slot)) { | |
814 | run_active_slot(slot); | |
815 | if (slot->curl_result != CURLE_OK) { | |
bc8f2652 | 816 | free(buffer.buffer); |
f7eb290f NH |
817 | if (slot->http_code == 404) |
818 | got_alternates = 1; | |
1d389ab6 NH |
819 | return 0; |
820 | } | |
821 | } | |
b3661567 | 822 | } |
1d389ab6 | 823 | } else { |
bc8f2652 | 824 | free(buffer.buffer); |
1d389ab6 | 825 | return 0; |
b3661567 DB |
826 | } |
827 | ||
bc8f2652 SV |
828 | fwrite_buffer_dynamic(&null_byte, 1, 1, &buffer); |
829 | buffer.posn--; | |
830 | data = buffer.buffer; | |
1b0c1e67 | 831 | |
b3661567 DB |
832 | while (i < buffer.posn) { |
833 | int posn = i; | |
834 | while (posn < buffer.posn && data[posn] != '\n') | |
835 | posn++; | |
836 | if (data[posn] == '\n') { | |
1b0c1e67 DB |
837 | int okay = 0; |
838 | int serverlen = 0; | |
839 | struct alt_base *newalt; | |
840 | char *target = NULL; | |
b3661567 | 841 | if (data[i] == '/') { |
1b0c1e67 DB |
842 | serverlen = strchr(base + 8, '/') - base; |
843 | okay = 1; | |
844 | } else if (!memcmp(data + i, "../", 3)) { | |
845 | i += 3; | |
846 | serverlen = strlen(base); | |
847 | while (i + 2 < posn && | |
848 | !memcmp(data + i, "../", 3)) { | |
849 | do { | |
850 | serverlen--; | |
851 | } while (serverlen && | |
852 | base[serverlen - 1] != '/'); | |
853 | i += 3; | |
854 | } | |
855 | // If the server got removed, give up. | |
856 | okay = strchr(base, ':') - base + 3 < | |
857 | serverlen; | |
858 | } else if (http_specific) { | |
859 | char *colon = strchr(data + i, ':'); | |
860 | char *slash = strchr(data + i, '/'); | |
861 | if (colon && slash && colon < data + posn && | |
862 | slash < data + posn && colon < slash) { | |
863 | okay = 1; | |
864 | } | |
865 | } | |
866 | // skip 'objects' at end | |
867 | if (okay) { | |
868 | target = xmalloc(serverlen + posn - i - 6); | |
b3661567 DB |
869 | strncpy(target, base, serverlen); |
870 | strncpy(target + serverlen, data + i, | |
871 | posn - i - 7); | |
872 | target[serverlen + posn - i - 7] = '\0'; | |
873 | if (get_verbosely) | |
874 | fprintf(stderr, | |
875 | "Also look at %s\n", target); | |
876 | newalt = xmalloc(sizeof(*newalt)); | |
1d389ab6 | 877 | newalt->next = NULL; |
b3661567 DB |
878 | newalt->base = target; |
879 | newalt->got_indices = 0; | |
880 | newalt->packs = NULL; | |
1d389ab6 NH |
881 | while (tail->next != NULL) |
882 | tail = tail->next; | |
883 | tail->next = newalt; | |
b3661567 DB |
884 | ret++; |
885 | } | |
886 | } | |
887 | i = posn + 1; | |
888 | } | |
bc8f2652 | 889 | |
f7eb290f | 890 | got_alternates = 1; |
bc8f2652 | 891 | free(buffer.buffer); |
b3661567 DB |
892 | return ret; |
893 | } | |
894 | ||
895 | static int fetch_indices(struct alt_base *repo) | |
182005b9 DB |
896 | { |
897 | unsigned char sha1[20]; | |
898 | char *url; | |
899 | struct buffer buffer; | |
900 | char *data; | |
901 | int i = 0; | |
902 | ||
1d389ab6 NH |
903 | struct active_request_slot *slot; |
904 | ||
b3661567 | 905 | if (repo->got_indices) |
182005b9 DB |
906 | return 0; |
907 | ||
908 | data = xmalloc(4096); | |
909 | buffer.size = 4096; | |
910 | buffer.posn = 0; | |
911 | buffer.buffer = data; | |
912 | ||
913 | if (get_verbosely) | |
914 | fprintf(stderr, "Getting pack list\n"); | |
915 | ||
b3661567 DB |
916 | url = xmalloc(strlen(repo->base) + 21); |
917 | sprintf(url, "%s/objects/info/packs", repo->base); | |
182005b9 | 918 | |
1d389ab6 NH |
919 | slot = get_active_slot(); |
920 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
bc8f2652 SV |
921 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, |
922 | fwrite_buffer_dynamic); | |
1d389ab6 NH |
923 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
924 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
925 | if (start_active_slot(slot)) { | |
926 | run_active_slot(slot); | |
bc8f2652 SV |
927 | if (slot->curl_result != CURLE_OK) { |
928 | free(buffer.buffer); | |
1d389ab6 | 929 | return error("%s", curl_errorstr); |
bc8f2652 | 930 | } |
1d389ab6 | 931 | } else { |
bc8f2652 | 932 | free(buffer.buffer); |
1d389ab6 NH |
933 | return error("Unable to start request"); |
934 | } | |
182005b9 | 935 | |
bc8f2652 | 936 | data = buffer.buffer; |
b3661567 | 937 | while (i < buffer.posn) { |
182005b9 DB |
938 | switch (data[i]) { |
939 | case 'P': | |
940 | i++; | |
941 | if (i + 52 < buffer.posn && | |
942 | !strncmp(data + i, " pack-", 6) && | |
943 | !strncmp(data + i + 46, ".pack\n", 6)) { | |
944 | get_sha1_hex(data + i + 6, sha1); | |
b3661567 | 945 | setup_index(repo, sha1); |
182005b9 DB |
946 | i += 51; |
947 | break; | |
948 | } | |
949 | default: | |
950 | while (data[i] != '\n') | |
951 | i++; | |
952 | } | |
953 | i++; | |
b3661567 | 954 | } |
182005b9 | 955 | |
bc8f2652 | 956 | free(buffer.buffer); |
b3661567 | 957 | repo->got_indices = 1; |
182005b9 DB |
958 | return 0; |
959 | } | |
960 | ||
b3661567 | 961 | static int fetch_pack(struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
962 | { |
963 | char *url; | |
964 | struct packed_git *target; | |
965 | struct packed_git **lst; | |
966 | FILE *packfile; | |
967 | char *filename; | |
49a0f240 NH |
968 | char tmpfile[PATH_MAX]; |
969 | int ret; | |
970 | long prev_posn = 0; | |
971 | char range[RANGE_HEADER_SIZE]; | |
972 | struct curl_slist *range_header = NULL; | |
1d389ab6 NH |
973 | |
974 | struct active_request_slot *slot; | |
182005b9 | 975 | |
b3661567 | 976 | if (fetch_indices(repo)) |
182005b9 | 977 | return -1; |
b3661567 | 978 | target = find_sha1_pack(sha1, repo->packs); |
182005b9 | 979 | if (!target) |
b3661567 | 980 | return -1; |
182005b9 DB |
981 | |
982 | if (get_verbosely) { | |
983 | fprintf(stderr, "Getting pack %s\n", | |
984 | sha1_to_hex(target->sha1)); | |
985 | fprintf(stderr, " which contains %s\n", | |
986 | sha1_to_hex(sha1)); | |
987 | } | |
988 | ||
b3661567 | 989 | url = xmalloc(strlen(repo->base) + 65); |
182005b9 | 990 | sprintf(url, "%s/objects/pack/pack-%s.pack", |
b3661567 | 991 | repo->base, sha1_to_hex(target->sha1)); |
182005b9 DB |
992 | |
993 | filename = sha1_pack_name(target->sha1); | |
49a0f240 NH |
994 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
995 | packfile = fopen(tmpfile, "a"); | |
182005b9 DB |
996 | if (!packfile) |
997 | return error("Unable to open local file %s for pack", | |
998 | filename); | |
999 | ||
1d389ab6 NH |
1000 | slot = get_active_slot(); |
1001 | curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile); | |
1002 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
1003 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 1004 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 | 1005 | slot->local = packfile; |
1ddea77e | 1006 | |
49a0f240 NH |
1007 | /* If there is data present from a previous transfer attempt, |
1008 | resume where it left off */ | |
1009 | prev_posn = ftell(packfile); | |
1010 | if (prev_posn>0) { | |
1011 | if (get_verbosely) | |
1012 | fprintf(stderr, | |
1013 | "Resuming fetch of pack %s at byte %ld\n", | |
1014 | sha1_to_hex(target->sha1), prev_posn); | |
1015 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
1016 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 1017 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
1018 | } |
1019 | ||
1d389ab6 NH |
1020 | if (start_active_slot(slot)) { |
1021 | run_active_slot(slot); | |
1022 | if (slot->curl_result != CURLE_OK) { | |
1023 | fclose(packfile); | |
1024 | return error("Unable to get pack file %s\n%s", url, | |
1025 | curl_errorstr); | |
1026 | } | |
1027 | } else { | |
1028 | return error("Unable to start request"); | |
182005b9 DB |
1029 | } |
1030 | ||
1031 | fclose(packfile); | |
1032 | ||
b721e01f | 1033 | ret = move_temp_to_file(tmpfile, filename); |
49a0f240 | 1034 | if (ret) |
b721e01f | 1035 | return ret; |
49a0f240 | 1036 | |
b3661567 | 1037 | lst = &repo->packs; |
182005b9 DB |
1038 | while (*lst != target) |
1039 | lst = &((*lst)->next); | |
1040 | *lst = (*lst)->next; | |
1041 | ||
271421cd JH |
1042 | if (verify_pack(target, 0)) |
1043 | return -1; | |
182005b9 DB |
1044 | install_packed_git(target); |
1045 | ||
1046 | return 0; | |
1047 | } | |
1048 | ||
a7928f8e | 1049 | static int fetch_object(struct alt_base *repo, unsigned char *sha1) |
6eb7ed54 DB |
1050 | { |
1051 | char *hex = sha1_to_hex(sha1); | |
09d92083 | 1052 | int ret; |
1d389ab6 | 1053 | struct transfer_request *request = request_queue_head; |
1d389ab6 NH |
1054 | |
1055 | while (request != NULL && memcmp(request->sha1, sha1, 20)) | |
1056 | request = request->next; | |
1057 | if (request == NULL) | |
1058 | return error("Couldn't find request for %s in the queue", hex); | |
1059 | ||
11f0dafe NH |
1060 | if (has_sha1_file(request->sha1)) { |
1061 | release_request(request); | |
1062 | return 0; | |
1063 | } | |
1064 | ||
a7a8d378 | 1065 | #ifdef USE_CURL_MULTI |
1d389ab6 | 1066 | while (request->state == WAITING) { |
f5dce806 | 1067 | int num_transfers; |
1d389ab6 NH |
1068 | curl_multi_perform(curlm, &num_transfers); |
1069 | if (num_transfers < active_requests) { | |
1070 | process_curl_messages(); | |
1071 | process_request_queue(); | |
1072 | } | |
1073 | } | |
a7a8d378 NH |
1074 | #else |
1075 | start_request(request); | |
1076 | #endif | |
6eb7ed54 | 1077 | |
a7a8d378 | 1078 | while (request->state == ACTIVE) { |
1d389ab6 | 1079 | run_active_slot(request->slot); |
a7a8d378 NH |
1080 | #ifndef USE_CURL_MULTI |
1081 | request->curl_result = request->slot->curl_result; | |
f7eb290f | 1082 | request->http_code = request->slot->http_code; |
a7a8d378 NH |
1083 | request->slot = NULL; |
1084 | ||
1085 | /* Use alternates if necessary */ | |
f7eb290f NH |
1086 | if (request->http_code == 404) { |
1087 | fetch_alternates(alt->base); | |
1088 | if (request->repo->next != NULL) { | |
1089 | request->repo = request->repo->next; | |
1090 | start_request(request); | |
1091 | } | |
a7a8d378 NH |
1092 | } else { |
1093 | finish_request(request); | |
1094 | request->state = COMPLETE; | |
1095 | } | |
1096 | #endif | |
1097 | } | |
6eb7ed54 | 1098 | |
1d389ab6 NH |
1099 | if (request->state == ABORTED) { |
1100 | release_request(request); | |
1101 | return error("Request for %s aborted", hex); | |
49a0f240 | 1102 | } |
49a0f240 | 1103 | |
1d389ab6 | 1104 | if (request->curl_result != CURLE_OK && request->http_code != 416) { |
e2029eb9 PB |
1105 | if (request->http_code == 404) |
1106 | ret = -1; /* Be silent, it is probably in a pack. */ | |
1107 | else | |
1108 | ret = error("%s (curl_result = %d, http_code = %ld, sha1 = %s)", | |
1109 | request->errorstr, request->curl_result, | |
1110 | request->http_code, hex); | |
1d389ab6 NH |
1111 | release_request(request); |
1112 | return ret; | |
49a0f240 NH |
1113 | } |
1114 | ||
1d389ab6 NH |
1115 | if (request->zret != Z_STREAM_END) { |
1116 | ret = error("File %s (%s) corrupt\n", hex, request->url); | |
1117 | release_request(request); | |
1118 | return ret; | |
49a0f240 NH |
1119 | } |
1120 | ||
1d389ab6 NH |
1121 | if (memcmp(request->sha1, request->real_sha1, 20)) { |
1122 | release_request(request); | |
1123 | return error("File %s has bad hash\n", hex); | |
182005b9 | 1124 | } |
6eb7ed54 | 1125 | |
1d389ab6 NH |
1126 | if (request->rename < 0) { |
1127 | ret = error("unable to write sha1 filename %s: %s", | |
1128 | request->filename, | |
1129 | strerror(request->rename)); | |
1130 | release_request(request); | |
1131 | return ret; | |
6eb7ed54 | 1132 | } |
49a0f240 | 1133 | |
1d389ab6 | 1134 | release_request(request); |
6eb7ed54 DB |
1135 | return 0; |
1136 | } | |
1137 | ||
b3661567 DB |
1138 | int fetch(unsigned char *sha1) |
1139 | { | |
1140 | struct alt_base *altbase = alt; | |
1d389ab6 NH |
1141 | |
1142 | if (!fetch_object(altbase, sha1)) | |
1143 | return 0; | |
b3661567 | 1144 | while (altbase) { |
b3661567 DB |
1145 | if (!fetch_pack(altbase, sha1)) |
1146 | return 0; | |
f7eb290f | 1147 | fetch_alternates(alt->base); |
b3661567 DB |
1148 | altbase = altbase->next; |
1149 | } | |
1150 | return error("Unable to find %s under %s\n", sha1_to_hex(sha1), | |
1d389ab6 | 1151 | alt->base); |
b3661567 DB |
1152 | } |
1153 | ||
94fa447a JH |
1154 | static inline int needs_quote(int ch) |
1155 | { | |
1156 | switch (ch) { | |
1157 | case '/': case '-': case '.': | |
1158 | case 'A'...'Z': case 'a'...'z': case '0'...'9': | |
1159 | return 0; | |
1160 | default: | |
1161 | return 1; | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | static inline int hex(int v) | |
1166 | { | |
1167 | if (v < 10) return '0' + v; | |
1168 | else return 'A' + v - 10; | |
1169 | } | |
1170 | ||
1171 | static char *quote_ref_url(const char *base, const char *ref) | |
1172 | { | |
1173 | const char *cp; | |
1174 | char *dp, *qref; | |
1175 | int len, baselen, ch; | |
1176 | ||
1177 | baselen = strlen(base); | |
1178 | len = baselen + 6; /* "refs/" + NUL */ | |
1179 | for (cp = ref; (ch = *cp) != 0; cp++, len++) | |
1180 | if (needs_quote(ch)) | |
1181 | len += 2; /* extra two hex plus replacement % */ | |
1182 | qref = xmalloc(len); | |
1183 | memcpy(qref, base, baselen); | |
1184 | memcpy(qref + baselen, "refs/", 5); | |
1185 | for (cp = ref, dp = qref + baselen + 5; (ch = *cp) != 0; cp++) { | |
1186 | if (needs_quote(ch)) { | |
1187 | *dp++ = '%'; | |
1188 | *dp++ = hex((ch >> 4) & 0xF); | |
1189 | *dp++ = hex(ch & 0xF); | |
1190 | } | |
1191 | else | |
1192 | *dp++ = ch; | |
1193 | } | |
1194 | *dp = 0; | |
1195 | ||
1196 | return qref; | |
1197 | } | |
1198 | ||
cd541a68 DB |
1199 | int fetch_ref(char *ref, unsigned char *sha1) |
1200 | { | |
94fa447a | 1201 | char *url; |
fa3e0655 DB |
1202 | char hex[42]; |
1203 | struct buffer buffer; | |
1d389ab6 NH |
1204 | char *base = alt->base; |
1205 | struct active_request_slot *slot; | |
fa3e0655 DB |
1206 | buffer.size = 41; |
1207 | buffer.posn = 0; | |
1208 | buffer.buffer = hex; | |
1209 | hex[41] = '\0'; | |
1210 | ||
94fa447a | 1211 | url = quote_ref_url(base, ref); |
1d389ab6 NH |
1212 | slot = get_active_slot(); |
1213 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
1214 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
1215 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
1216 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
1217 | if (start_active_slot(slot)) { | |
1218 | run_active_slot(slot); | |
1219 | if (slot->curl_result != CURLE_OK) | |
1220 | return error("Couldn't get %s for %s\n%s", | |
1221 | url, ref, curl_errorstr); | |
1222 | } else { | |
1223 | return error("Unable to start request"); | |
1224 | } | |
fa3e0655 DB |
1225 | |
1226 | hex[40] = '\0'; | |
1227 | get_sha1_hex(hex, sha1); | |
1228 | return 0; | |
cd541a68 DB |
1229 | } |
1230 | ||
6eb7ed54 DB |
1231 | int main(int argc, char **argv) |
1232 | { | |
1233 | char *commit_id; | |
1234 | char *url; | |
1235 | int arg = 1; | |
1d389ab6 | 1236 | struct active_request_slot *slot; |
e0004e28 NH |
1237 | char *low_speed_limit; |
1238 | char *low_speed_time; | |
7b9ae53e NH |
1239 | char *wait_url; |
1240 | int rc = 0; | |
6eb7ed54 DB |
1241 | |
1242 | while (arg < argc && argv[arg][0] == '-') { | |
1243 | if (argv[arg][1] == 't') { | |
4250a5e5 | 1244 | get_tree = 1; |
6eb7ed54 | 1245 | } else if (argv[arg][1] == 'c') { |
4250a5e5 | 1246 | get_history = 1; |
6eb7ed54 | 1247 | } else if (argv[arg][1] == 'a') { |
4250a5e5 DB |
1248 | get_all = 1; |
1249 | get_tree = 1; | |
1250 | get_history = 1; | |
e78d9772 JH |
1251 | } else if (argv[arg][1] == 'v') { |
1252 | get_verbosely = 1; | |
fa3e0655 DB |
1253 | } else if (argv[arg][1] == 'w') { |
1254 | write_ref = argv[arg + 1]; | |
1255 | arg++; | |
820eca68 DB |
1256 | } else if (!strcmp(argv[arg], "--recover")) { |
1257 | get_recover = 1; | |
6eb7ed54 DB |
1258 | } |
1259 | arg++; | |
1260 | } | |
1261 | if (argc < arg + 2) { | |
215a7ad1 | 1262 | usage("git-http-fetch [-c] [-t] [-a] [-d] [-v] [--recover] [-w ref] commit-id url"); |
6eb7ed54 DB |
1263 | return 1; |
1264 | } | |
1265 | commit_id = argv[arg]; | |
1266 | url = argv[arg + 1]; | |
1267 | ||
6eb7ed54 DB |
1268 | curl_global_init(CURL_GLOBAL_ALL); |
1269 | ||
a7a8d378 | 1270 | #ifdef USE_CURL_MULTI |
f5dce806 PH |
1271 | { |
1272 | char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS"); | |
1273 | if (http_max_requests != NULL) | |
1274 | max_requests = atoi(http_max_requests); | |
1275 | } | |
38079239 | 1276 | |
1d389ab6 NH |
1277 | curlm = curl_multi_init(); |
1278 | if (curlm == NULL) { | |
1279 | fprintf(stderr, "Error creating curl multi handle.\n"); | |
1280 | return 1; | |
1281 | } | |
a7a8d378 | 1282 | #endif |
d402d556 NH |
1283 | |
1284 | if (getenv("GIT_SSL_NO_VERIFY")) | |
1285 | curl_ssl_verify = 0; | |
1286 | ||
1287 | ssl_cert = getenv("GIT_SSL_CERT"); | |
1288 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
1289 | ssl_key = getenv("GIT_SSL_KEY"); | |
1290 | #endif | |
1291 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
1292 | ssl_capath = getenv("GIT_SSL_CAPATH"); | |
1293 | #endif | |
1294 | ssl_cainfo = getenv("GIT_SSL_CAINFO"); | |
1295 | ||
e0004e28 NH |
1296 | low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT"); |
1297 | if (low_speed_limit != NULL) | |
1298 | curl_low_speed_limit = strtol(low_speed_limit, NULL, 10); | |
1299 | low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME"); | |
1300 | if (low_speed_time != NULL) | |
1301 | curl_low_speed_time = strtol(low_speed_time, NULL, 10); | |
1302 | ||
d402d556 NH |
1303 | git_config(http_options); |
1304 | ||
1305 | if (curl_ssl_verify == -1) | |
1306 | curl_ssl_verify = 1; | |
1307 | ||
1308 | #ifdef USE_CURL_MULTI | |
1309 | if (max_requests < 1) | |
1310 | max_requests = DEFAULT_MAX_REQUESTS; | |
1311 | #endif | |
1312 | ||
03126006 | 1313 | pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache"); |
1db69b57 | 1314 | no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:"); |
49a0f240 | 1315 | no_range_header = curl_slist_append(no_range_header, "Range:"); |
6eb7ed54 | 1316 | |
7baa3e86 JS |
1317 | #ifndef NO_CURL_EASY_DUPHANDLE |
1318 | curl_default = get_curl_handle(); | |
9f6cf65e | 1319 | #endif |
3dcb90f5 | 1320 | |
b3661567 DB |
1321 | alt = xmalloc(sizeof(*alt)); |
1322 | alt->base = url; | |
1323 | alt->got_indices = 0; | |
1324 | alt->packs = NULL; | |
1325 | alt->next = NULL; | |
6eb7ed54 | 1326 | |
4250a5e5 | 1327 | if (pull(commit_id)) |
7b9ae53e | 1328 | rc = 1; |
6eb7ed54 | 1329 | |
03126006 | 1330 | curl_slist_free_all(pragma_header); |
1db69b57 | 1331 | curl_slist_free_all(no_pragma_header); |
1d389ab6 | 1332 | curl_slist_free_all(no_range_header); |
7baa3e86 | 1333 | #ifndef NO_CURL_EASY_DUPHANDLE |
1d389ab6 | 1334 | curl_easy_cleanup(curl_default); |
7baa3e86 | 1335 | #endif |
1d389ab6 NH |
1336 | slot = active_queue_head; |
1337 | while (slot != NULL) { | |
7b9ae53e NH |
1338 | if (slot->in_use) { |
1339 | if (get_verbosely) { | |
1340 | curl_easy_getinfo(slot->curl, | |
1341 | CURLINFO_EFFECTIVE_URL, | |
1342 | &wait_url); | |
1343 | fprintf(stderr, "Waiting for %s\n", wait_url); | |
1344 | } | |
1345 | run_active_slot(slot); | |
1346 | } | |
f1a906a3 NH |
1347 | if (slot->curl != NULL) |
1348 | curl_easy_cleanup(slot->curl); | |
1d389ab6 NH |
1349 | slot = slot->next; |
1350 | } | |
a7a8d378 | 1351 | #ifdef USE_CURL_MULTI |
1d389ab6 | 1352 | curl_multi_cleanup(curlm); |
a7a8d378 | 1353 | #endif |
6eb7ed54 | 1354 | curl_global_cleanup(); |
7b9ae53e | 1355 | return rc; |
6eb7ed54 | 1356 | } |