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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 | ||
acc075a8 | 28 | static int got_alternates = -1; |
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; |
acc075a8 NH |
90 | void *callback_data; |
91 | void (*callback_func)(void *data); | |
1d389ab6 NH |
92 | struct active_request_slot *next; |
93 | }; | |
94 | ||
acc075a8 NH |
95 | struct alt_request { |
96 | char *base; | |
97 | char *url; | |
98 | struct buffer *buffer; | |
99 | struct active_request_slot *slot; | |
100 | int http_specific; | |
101 | }; | |
102 | ||
1d389ab6 NH |
103 | static struct transfer_request *request_queue_head = NULL; |
104 | static struct active_request_slot *active_queue_head = NULL; | |
6eb7ed54 | 105 | |
d402d556 NH |
106 | static int curl_ssl_verify = -1; |
107 | static char *ssl_cert = NULL; | |
7baa3e86 | 108 | #if LIBCURL_VERSION_NUM >= 0x070902 |
d402d556 | 109 | static char *ssl_key = NULL; |
7baa3e86 JS |
110 | #endif |
111 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
d402d556 | 112 | static char *ssl_capath = NULL; |
7baa3e86 | 113 | #endif |
d402d556 | 114 | static char *ssl_cainfo = NULL; |
e0004e28 NH |
115 | static long curl_low_speed_limit = -1; |
116 | static long curl_low_speed_time = -1; | |
3dcb90f5 | 117 | |
fa3e0655 DB |
118 | struct buffer |
119 | { | |
120 | size_t posn; | |
121 | size_t size; | |
122 | void *buffer; | |
123 | }; | |
124 | ||
d402d556 NH |
125 | static int http_options(const char *var, const char *value) |
126 | { | |
127 | if (!strcmp("http.sslverify", var)) { | |
128 | if (curl_ssl_verify == -1) { | |
129 | curl_ssl_verify = git_config_bool(var, value); | |
130 | } | |
131 | return 0; | |
132 | } | |
133 | ||
134 | if (!strcmp("http.sslcert", var)) { | |
135 | if (ssl_cert == NULL) { | |
136 | ssl_cert = xmalloc(strlen(value)+1); | |
137 | strcpy(ssl_cert, value); | |
138 | } | |
139 | return 0; | |
140 | } | |
141 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
142 | if (!strcmp("http.sslkey", var)) { | |
143 | if (ssl_key == NULL) { | |
144 | ssl_key = xmalloc(strlen(value)+1); | |
145 | strcpy(ssl_key, value); | |
146 | } | |
147 | return 0; | |
148 | } | |
149 | #endif | |
150 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
151 | if (!strcmp("http.sslcapath", var)) { | |
152 | if (ssl_capath == NULL) { | |
153 | ssl_capath = xmalloc(strlen(value)+1); | |
154 | strcpy(ssl_capath, value); | |
155 | } | |
156 | return 0; | |
157 | } | |
158 | #endif | |
159 | if (!strcmp("http.sslcainfo", var)) { | |
160 | if (ssl_cainfo == NULL) { | |
161 | ssl_cainfo = xmalloc(strlen(value)+1); | |
162 | strcpy(ssl_cainfo, value); | |
163 | } | |
164 | return 0; | |
165 | } | |
166 | ||
167 | #ifdef USE_CURL_MULTI | |
168 | if (!strcmp("http.maxrequests", var)) { | |
169 | if (max_requests == -1) | |
170 | max_requests = git_config_int(var, value); | |
171 | return 0; | |
172 | } | |
173 | #endif | |
174 | ||
e0004e28 NH |
175 | if (!strcmp("http.lowspeedlimit", var)) { |
176 | if (curl_low_speed_limit == -1) | |
177 | curl_low_speed_limit = (long)git_config_int(var, value); | |
178 | return 0; | |
179 | } | |
180 | if (!strcmp("http.lowspeedtime", var)) { | |
181 | if (curl_low_speed_time == -1) | |
182 | curl_low_speed_time = (long)git_config_int(var, value); | |
183 | return 0; | |
184 | } | |
185 | ||
d402d556 NH |
186 | /* Fall back on the default ones */ |
187 | return git_default_config(var, value); | |
188 | } | |
189 | ||
fa3e0655 | 190 | static size_t fwrite_buffer(void *ptr, size_t eltsize, size_t nmemb, |
182005b9 DB |
191 | struct buffer *buffer) |
192 | { | |
fa3e0655 DB |
193 | size_t size = eltsize * nmemb; |
194 | if (size > buffer->size - buffer->posn) | |
195 | size = buffer->size - buffer->posn; | |
196 | memcpy(buffer->buffer + buffer->posn, ptr, size); | |
197 | buffer->posn += size; | |
1d389ab6 | 198 | data_received++; |
fa3e0655 DB |
199 | return size; |
200 | } | |
201 | ||
bc8f2652 SV |
202 | static size_t fwrite_buffer_dynamic(const void *ptr, size_t eltsize, |
203 | size_t nmemb, struct buffer *buffer) | |
204 | { | |
205 | size_t size = eltsize * nmemb; | |
206 | if (size > buffer->size - buffer->posn) { | |
207 | buffer->size = buffer->size * 3 / 2; | |
208 | if (buffer->size < buffer->posn + size) | |
209 | buffer->size = buffer->posn + size; | |
210 | buffer->buffer = xrealloc(buffer->buffer, buffer->size); | |
211 | } | |
212 | memcpy(buffer->buffer + buffer->posn, ptr, size); | |
213 | buffer->posn += size; | |
214 | data_received++; | |
215 | return size; | |
216 | } | |
217 | ||
182005b9 DB |
218 | static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb, |
219 | void *data) | |
220 | { | |
bf0f910d | 221 | unsigned char expn[4096]; |
6eb7ed54 DB |
222 | size_t size = eltsize * nmemb; |
223 | int posn = 0; | |
1d389ab6 | 224 | struct transfer_request *request = (struct transfer_request *)data; |
6eb7ed54 | 225 | do { |
1d389ab6 NH |
226 | ssize_t retval = write(request->local, |
227 | ptr + posn, size - posn); | |
6eb7ed54 DB |
228 | if (retval < 0) |
229 | return posn; | |
230 | posn += retval; | |
231 | } while (posn < size); | |
232 | ||
1d389ab6 NH |
233 | request->stream.avail_in = size; |
234 | request->stream.next_in = ptr; | |
6eb7ed54 | 235 | do { |
1d389ab6 NH |
236 | request->stream.next_out = expn; |
237 | request->stream.avail_out = sizeof(expn); | |
238 | request->zret = inflate(&request->stream, Z_SYNC_FLUSH); | |
239 | SHA1_Update(&request->c, expn, | |
240 | sizeof(expn) - request->stream.avail_out); | |
241 | } while (request->stream.avail_in && request->zret == Z_OK); | |
242 | data_received++; | |
6eb7ed54 DB |
243 | return size; |
244 | } | |
245 | ||
a7a8d378 | 246 | #ifdef USE_CURL_MULTI |
f5dce806 PH |
247 | static void process_curl_messages(void); |
248 | static void process_request_queue(void); | |
a7a8d378 | 249 | #endif |
acc075a8 | 250 | static void fetch_alternates(char *base); |
1d389ab6 | 251 | |
f5dce806 | 252 | static CURL* get_curl_handle(void) |
7baa3e86 JS |
253 | { |
254 | CURL* result = curl_easy_init(); | |
255 | ||
256 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, curl_ssl_verify); | |
257 | #if LIBCURL_VERSION_NUM >= 0x070907 | |
258 | curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL); | |
259 | #endif | |
260 | ||
261 | if (ssl_cert != NULL) | |
262 | curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert); | |
263 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
264 | if (ssl_key != NULL) | |
265 | curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key); | |
266 | #endif | |
267 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
268 | if (ssl_capath != NULL) | |
269 | curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath); | |
270 | #endif | |
271 | if (ssl_cainfo != NULL) | |
272 | curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo); | |
273 | curl_easy_setopt(result, CURLOPT_FAILONERROR, 1); | |
274 | ||
e0004e28 NH |
275 | if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) { |
276 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT, | |
277 | curl_low_speed_limit); | |
278 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME, | |
279 | curl_low_speed_time); | |
280 | } | |
281 | ||
66c9ec25 JW |
282 | curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1); |
283 | ||
7baa3e86 JS |
284 | return result; |
285 | } | |
286 | ||
f5dce806 | 287 | static struct active_request_slot *get_active_slot(void) |
1d389ab6 NH |
288 | { |
289 | struct active_request_slot *slot = active_queue_head; | |
290 | struct active_request_slot *newslot; | |
a7a8d378 NH |
291 | |
292 | #ifdef USE_CURL_MULTI | |
1d389ab6 NH |
293 | int num_transfers; |
294 | ||
295 | /* Wait for a slot to open up if the queue is full */ | |
296 | while (active_requests >= max_requests) { | |
297 | curl_multi_perform(curlm, &num_transfers); | |
298 | if (num_transfers < active_requests) { | |
299 | process_curl_messages(); | |
300 | } | |
301 | } | |
a7a8d378 | 302 | #endif |
1d389ab6 NH |
303 | |
304 | while (slot != NULL && slot->in_use) { | |
305 | slot = slot->next; | |
306 | } | |
307 | if (slot == NULL) { | |
308 | newslot = xmalloc(sizeof(*newslot)); | |
f1a906a3 | 309 | newslot->curl = NULL; |
1d389ab6 NH |
310 | newslot->in_use = 0; |
311 | newslot->next = NULL; | |
312 | ||
313 | slot = active_queue_head; | |
314 | if (slot == NULL) { | |
315 | active_queue_head = newslot; | |
316 | } else { | |
317 | while (slot->next != NULL) { | |
318 | slot = slot->next; | |
319 | } | |
320 | slot->next = newslot; | |
321 | } | |
322 | slot = newslot; | |
323 | } | |
324 | ||
f1a906a3 NH |
325 | if (slot->curl == NULL) { |
326 | #ifdef NO_CURL_EASY_DUPHANDLE | |
327 | slot->curl = get_curl_handle(); | |
328 | #else | |
329 | slot->curl = curl_easy_duphandle(curl_default); | |
330 | #endif | |
331 | } | |
332 | ||
1d389ab6 NH |
333 | active_requests++; |
334 | slot->in_use = 1; | |
335 | slot->done = 0; | |
336 | slot->local = NULL; | |
acc075a8 NH |
337 | slot->callback_data = NULL; |
338 | slot->callback_func = NULL; | |
03126006 | 339 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header); |
1d389ab6 NH |
340 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_range_header); |
341 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr); | |
342 | ||
343 | return slot; | |
344 | } | |
345 | ||
f5dce806 | 346 | static int start_active_slot(struct active_request_slot *slot) |
1d389ab6 | 347 | { |
a7a8d378 | 348 | #ifdef USE_CURL_MULTI |
1d389ab6 NH |
349 | CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl); |
350 | ||
351 | if (curlm_result != CURLM_OK && | |
352 | curlm_result != CURLM_CALL_MULTI_PERFORM) { | |
353 | active_requests--; | |
354 | slot->in_use = 0; | |
355 | return 0; | |
356 | } | |
a7a8d378 | 357 | #endif |
1d389ab6 NH |
358 | return 1; |
359 | } | |
360 | ||
f5dce806 | 361 | static void run_active_slot(struct active_request_slot *slot) |
1d389ab6 | 362 | { |
a7a8d378 | 363 | #ifdef USE_CURL_MULTI |
1d389ab6 NH |
364 | int num_transfers; |
365 | long last_pos = 0; | |
366 | long current_pos; | |
367 | fd_set readfds; | |
368 | fd_set writefds; | |
369 | fd_set excfds; | |
370 | int max_fd; | |
371 | struct timeval select_timeout; | |
372 | CURLMcode curlm_result; | |
373 | ||
374 | while (!slot->done) { | |
375 | data_received = 0; | |
376 | do { | |
377 | curlm_result = curl_multi_perform(curlm, | |
378 | &num_transfers); | |
379 | } while (curlm_result == CURLM_CALL_MULTI_PERFORM); | |
380 | if (num_transfers < active_requests) { | |
381 | process_curl_messages(); | |
382 | process_request_queue(); | |
383 | } | |
384 | ||
385 | if (!data_received && slot->local != NULL) { | |
386 | current_pos = ftell(slot->local); | |
387 | if (current_pos > last_pos) | |
388 | data_received++; | |
389 | last_pos = current_pos; | |
390 | } | |
391 | ||
392 | if (!slot->done && !data_received) { | |
393 | max_fd = 0; | |
394 | FD_ZERO(&readfds); | |
395 | FD_ZERO(&writefds); | |
396 | FD_ZERO(&excfds); | |
397 | select_timeout.tv_sec = 0; | |
398 | select_timeout.tv_usec = 50000; | |
399 | select(max_fd, &readfds, &writefds, | |
400 | &excfds, &select_timeout); | |
401 | } | |
402 | } | |
a7a8d378 NH |
403 | #else |
404 | slot->curl_result = curl_easy_perform(slot->curl); | |
405 | active_requests--; | |
406 | #endif | |
1d389ab6 NH |
407 | } |
408 | ||
f5dce806 | 409 | static void start_request(struct transfer_request *request) |
1d389ab6 NH |
410 | { |
411 | char *hex = sha1_to_hex(request->sha1); | |
412 | char prevfile[PATH_MAX]; | |
413 | char *url; | |
414 | char *posn; | |
415 | int prevlocal; | |
416 | unsigned char prev_buf[PREV_BUF_SIZE]; | |
417 | ssize_t prev_read = 0; | |
418 | long prev_posn = 0; | |
419 | char range[RANGE_HEADER_SIZE]; | |
420 | struct curl_slist *range_header = NULL; | |
421 | struct active_request_slot *slot; | |
422 | ||
423 | snprintf(prevfile, sizeof(prevfile), "%s.prev", request->filename); | |
424 | unlink(prevfile); | |
425 | rename(request->tmpfile, prevfile); | |
426 | unlink(request->tmpfile); | |
427 | ||
313c4714 PB |
428 | if (request->local != -1) |
429 | error("fd leakage in start: %d", request->local); | |
1d389ab6 NH |
430 | request->local = open(request->tmpfile, |
431 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
b721e01f JH |
432 | /* This could have failed due to the "lazy directory creation"; |
433 | * try to mkdir the last path component. | |
434 | */ | |
435 | if (request->local < 0 && errno == ENOENT) { | |
436 | char *dir = strrchr(request->tmpfile, '/'); | |
437 | if (dir) { | |
438 | *dir = 0; | |
439 | mkdir(request->tmpfile, 0777); | |
440 | *dir = '/'; | |
441 | } | |
442 | request->local = open(request->tmpfile, | |
443 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
444 | } | |
445 | ||
1d389ab6 NH |
446 | if (request->local < 0) { |
447 | request->state = ABORTED; | |
448 | error("Couldn't create temporary file %s for %s: %s\n", | |
449 | request->tmpfile, request->filename, strerror(errno)); | |
450 | return; | |
451 | } | |
452 | ||
453 | memset(&request->stream, 0, sizeof(request->stream)); | |
454 | ||
455 | inflateInit(&request->stream); | |
456 | ||
457 | SHA1_Init(&request->c); | |
458 | ||
459 | url = xmalloc(strlen(request->repo->base) + 50); | |
460 | request->url = xmalloc(strlen(request->repo->base) + 50); | |
461 | strcpy(url, request->repo->base); | |
462 | posn = url + strlen(request->repo->base); | |
463 | strcpy(posn, "objects/"); | |
464 | posn += 8; | |
465 | memcpy(posn, hex, 2); | |
466 | posn += 2; | |
467 | *(posn++) = '/'; | |
468 | strcpy(posn, hex + 2); | |
469 | strcpy(request->url, url); | |
470 | ||
471 | /* If a previous temp file is present, process what was already | |
472 | fetched. */ | |
473 | prevlocal = open(prevfile, O_RDONLY); | |
474 | if (prevlocal != -1) { | |
475 | do { | |
476 | prev_read = read(prevlocal, prev_buf, PREV_BUF_SIZE); | |
477 | if (prev_read>0) { | |
478 | if (fwrite_sha1_file(prev_buf, | |
479 | 1, | |
480 | prev_read, | |
481 | request) == prev_read) { | |
482 | prev_posn += prev_read; | |
483 | } else { | |
484 | prev_read = -1; | |
485 | } | |
486 | } | |
487 | } while (prev_read > 0); | |
488 | close(prevlocal); | |
489 | } | |
490 | unlink(prevfile); | |
491 | ||
492 | /* Reset inflate/SHA1 if there was an error reading the previous temp | |
493 | file; also rewind to the beginning of the local file. */ | |
494 | if (prev_read == -1) { | |
495 | memset(&request->stream, 0, sizeof(request->stream)); | |
496 | inflateInit(&request->stream); | |
497 | SHA1_Init(&request->c); | |
498 | if (prev_posn>0) { | |
499 | prev_posn = 0; | |
500 | lseek(request->local, SEEK_SET, 0); | |
501 | ftruncate(request->local, 0); | |
502 | } | |
503 | } | |
504 | ||
505 | slot = get_active_slot(); | |
506 | curl_easy_setopt(slot->curl, CURLOPT_FILE, request); | |
507 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); | |
508 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr); | |
509 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 510 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 NH |
511 | |
512 | /* If we have successfully processed data from a previous fetch | |
513 | attempt, only fetch the data we don't already have. */ | |
514 | if (prev_posn>0) { | |
515 | if (get_verbosely) | |
516 | fprintf(stderr, | |
517 | "Resuming fetch of object %s at byte %ld\n", | |
518 | hex, prev_posn); | |
519 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
520 | range_header = curl_slist_append(range_header, range); | |
521 | curl_easy_setopt(slot->curl, | |
522 | CURLOPT_HTTPHEADER, range_header); | |
523 | } | |
524 | ||
a7a8d378 | 525 | /* Try to get the request started, abort the request on error */ |
1d389ab6 NH |
526 | if (!start_active_slot(slot)) { |
527 | request->state = ABORTED; | |
313c4714 | 528 | close(request->local); request->local = -1; |
1d389ab6 NH |
529 | free(request->url); |
530 | return; | |
531 | } | |
532 | ||
533 | request->slot = slot; | |
534 | request->state = ACTIVE; | |
535 | } | |
536 | ||
f5dce806 | 537 | static void finish_request(struct transfer_request *request) |
1d389ab6 | 538 | { |
50496b21 NH |
539 | struct stat st; |
540 | ||
1d389ab6 | 541 | fchmod(request->local, 0444); |
313c4714 | 542 | close(request->local); request->local = -1; |
1d389ab6 NH |
543 | |
544 | if (request->http_code == 416) { | |
545 | fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n"); | |
546 | } else if (request->curl_result != CURLE_OK) { | |
50496b21 NH |
547 | if (stat(request->tmpfile, &st) == 0) |
548 | if (st.st_size == 0) | |
549 | unlink(request->tmpfile); | |
1d389ab6 NH |
550 | return; |
551 | } | |
552 | ||
553 | inflateEnd(&request->stream); | |
554 | SHA1_Final(request->real_sha1, &request->c); | |
555 | if (request->zret != Z_STREAM_END) { | |
556 | unlink(request->tmpfile); | |
557 | return; | |
558 | } | |
559 | if (memcmp(request->sha1, request->real_sha1, 20)) { | |
560 | unlink(request->tmpfile); | |
561 | return; | |
562 | } | |
563 | request->rename = | |
b721e01f | 564 | move_temp_to_file(request->tmpfile, request->filename); |
1d389ab6 NH |
565 | |
566 | if (request->rename == 0) | |
567 | pull_say("got %s\n", sha1_to_hex(request->sha1)); | |
568 | } | |
569 | ||
f5dce806 | 570 | static void release_request(struct transfer_request *request) |
1d389ab6 NH |
571 | { |
572 | struct transfer_request *entry = request_queue_head; | |
573 | ||
313c4714 PB |
574 | if (request->local != -1) |
575 | error("fd leakage in release: %d", request->local); | |
1d389ab6 NH |
576 | if (request == request_queue_head) { |
577 | request_queue_head = request->next; | |
578 | } else { | |
579 | while (entry->next != NULL && entry->next != request) | |
580 | entry = entry->next; | |
581 | if (entry->next == request) | |
582 | entry->next = entry->next->next; | |
583 | } | |
584 | ||
585 | free(request->url); | |
586 | free(request); | |
587 | } | |
588 | ||
a7a8d378 | 589 | #ifdef USE_CURL_MULTI |
f4f440a0 | 590 | static void process_curl_messages(void) |
1d389ab6 NH |
591 | { |
592 | int num_messages; | |
593 | struct active_request_slot *slot; | |
594 | struct transfer_request *request = NULL; | |
595 | CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages); | |
596 | ||
597 | while (curl_message != NULL) { | |
598 | if (curl_message->msg == CURLMSG_DONE) { | |
90279074 | 599 | int curl_result = curl_message->data.result; |
1d389ab6 NH |
600 | slot = active_queue_head; |
601 | while (slot != NULL && | |
602 | slot->curl != curl_message->easy_handle) | |
603 | slot = slot->next; | |
604 | if (slot != NULL) { | |
605 | curl_multi_remove_handle(curlm, slot->curl); | |
606 | active_requests--; | |
607 | slot->done = 1; | |
608 | slot->in_use = 0; | |
90279074 | 609 | slot->curl_result = curl_result; |
f7eb290f NH |
610 | curl_easy_getinfo(slot->curl, |
611 | CURLINFO_HTTP_CODE, | |
612 | &slot->http_code); | |
1d389ab6 NH |
613 | request = request_queue_head; |
614 | while (request != NULL && | |
615 | request->slot != slot) | |
616 | request = request->next; | |
617 | } else { | |
618 | fprintf(stderr, "Received DONE message for unknown request!\n"); | |
619 | } | |
acc075a8 NH |
620 | |
621 | /* Process slot callback if appropriate */ | |
622 | if (slot->callback_func != NULL) { | |
623 | slot->callback_func(slot->callback_data); | |
624 | } | |
625 | ||
1d389ab6 | 626 | if (request != NULL) { |
90279074 | 627 | request->curl_result = curl_result; |
f7eb290f | 628 | request->http_code = slot->http_code; |
1d389ab6 | 629 | request->slot = NULL; |
f7eb290f | 630 | request->state = COMPLETE; |
1d389ab6 NH |
631 | |
632 | /* Use alternates if necessary */ | |
f7eb290f NH |
633 | if (request->http_code == 404) { |
634 | fetch_alternates(alt->base); | |
635 | if (request->repo->next != NULL) { | |
636 | request->repo = | |
637 | request->repo->next; | |
313c4714 PB |
638 | close(request->local); |
639 | request->local = -1; | |
f7eb290f | 640 | start_request(request); |
54a9ba0d NH |
641 | } else { |
642 | finish_request(request); | |
f7eb290f | 643 | } |
1d389ab6 NH |
644 | } else { |
645 | finish_request(request); | |
1d389ab6 NH |
646 | } |
647 | } | |
648 | } else { | |
649 | fprintf(stderr, "Unknown CURL message received: %d\n", | |
650 | (int)curl_message->msg); | |
651 | } | |
652 | curl_message = curl_multi_info_read(curlm, &num_messages); | |
653 | } | |
654 | } | |
655 | ||
f4f440a0 | 656 | static void process_request_queue(void) |
1d389ab6 NH |
657 | { |
658 | struct transfer_request *request = request_queue_head; | |
f1a906a3 | 659 | struct active_request_slot *slot = active_queue_head; |
1d389ab6 NH |
660 | int num_transfers; |
661 | ||
662 | while (active_requests < max_requests && request != NULL) { | |
663 | if (request->state == WAITING) { | |
11f0dafe NH |
664 | if (has_sha1_file(request->sha1)) |
665 | release_request(request); | |
666 | else | |
667 | start_request(request); | |
1d389ab6 NH |
668 | curl_multi_perform(curlm, &num_transfers); |
669 | } | |
670 | request = request->next; | |
671 | } | |
f1a906a3 NH |
672 | |
673 | while (slot != NULL) { | |
674 | if (!slot->in_use && slot->curl != NULL) { | |
675 | curl_easy_cleanup(slot->curl); | |
676 | slot->curl = NULL; | |
677 | } | |
678 | slot = slot->next; | |
679 | } | |
1d389ab6 | 680 | } |
a7a8d378 | 681 | #endif |
1d389ab6 NH |
682 | |
683 | void prefetch(unsigned char *sha1) | |
684 | { | |
685 | struct transfer_request *newreq; | |
686 | struct transfer_request *tail; | |
687 | char *filename = sha1_file_name(sha1); | |
688 | ||
689 | newreq = xmalloc(sizeof(*newreq)); | |
690 | memcpy(newreq->sha1, sha1, 20); | |
691 | newreq->repo = alt; | |
692 | newreq->url = NULL; | |
693 | newreq->local = -1; | |
694 | newreq->state = WAITING; | |
695 | snprintf(newreq->filename, sizeof(newreq->filename), "%s", filename); | |
696 | snprintf(newreq->tmpfile, sizeof(newreq->tmpfile), | |
697 | "%s.temp", filename); | |
698 | newreq->next = NULL; | |
699 | ||
700 | if (request_queue_head == NULL) { | |
701 | request_queue_head = newreq; | |
702 | } else { | |
703 | tail = request_queue_head; | |
704 | while (tail->next != NULL) { | |
705 | tail = tail->next; | |
706 | } | |
707 | tail->next = newreq; | |
708 | } | |
a7a8d378 | 709 | #ifdef USE_CURL_MULTI |
1d389ab6 NH |
710 | process_request_queue(); |
711 | process_curl_messages(); | |
a7a8d378 | 712 | #endif |
1d389ab6 NH |
713 | } |
714 | ||
b3661567 | 715 | static int fetch_index(struct alt_base *repo, unsigned char *sha1) |
182005b9 | 716 | { |
1d389ab6 | 717 | char *hex = sha1_to_hex(sha1); |
182005b9 DB |
718 | char *filename; |
719 | char *url; | |
49a0f240 | 720 | char tmpfile[PATH_MAX]; |
49a0f240 NH |
721 | long prev_posn = 0; |
722 | char range[RANGE_HEADER_SIZE]; | |
723 | struct curl_slist *range_header = NULL; | |
182005b9 DB |
724 | |
725 | FILE *indexfile; | |
1d389ab6 | 726 | struct active_request_slot *slot; |
182005b9 DB |
727 | |
728 | if (has_pack_index(sha1)) | |
729 | return 0; | |
730 | ||
731 | if (get_verbosely) | |
1d389ab6 | 732 | fprintf(stderr, "Getting index for pack %s\n", hex); |
182005b9 | 733 | |
b3661567 | 734 | url = xmalloc(strlen(repo->base) + 64); |
1d389ab6 | 735 | sprintf(url, "%s/objects/pack/pack-%s.idx", repo->base, hex); |
182005b9 DB |
736 | |
737 | filename = sha1_pack_index_name(sha1); | |
49a0f240 NH |
738 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
739 | indexfile = fopen(tmpfile, "a"); | |
182005b9 DB |
740 | if (!indexfile) |
741 | return error("Unable to open local file %s for pack index", | |
742 | filename); | |
743 | ||
1d389ab6 NH |
744 | slot = get_active_slot(); |
745 | curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile); | |
746 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
747 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 748 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 NH |
749 | slot->local = indexfile; |
750 | ||
49a0f240 NH |
751 | /* If there is data present from a previous transfer attempt, |
752 | resume where it left off */ | |
753 | prev_posn = ftell(indexfile); | |
754 | if (prev_posn>0) { | |
755 | if (get_verbosely) | |
756 | fprintf(stderr, | |
757 | "Resuming fetch of index for pack %s at byte %ld\n", | |
1d389ab6 | 758 | hex, prev_posn); |
49a0f240 NH |
759 | sprintf(range, "Range: bytes=%ld-", prev_posn); |
760 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 761 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
762 | } |
763 | ||
1d389ab6 NH |
764 | if (start_active_slot(slot)) { |
765 | run_active_slot(slot); | |
766 | if (slot->curl_result != CURLE_OK) { | |
767 | fclose(indexfile); | |
768 | return error("Unable to get pack index %s\n%s", url, | |
769 | curl_errorstr); | |
770 | } | |
771 | } else { | |
313c4714 | 772 | fclose(indexfile); |
1d389ab6 | 773 | return error("Unable to start request"); |
182005b9 DB |
774 | } |
775 | ||
776 | fclose(indexfile); | |
49a0f240 | 777 | |
b721e01f | 778 | return move_temp_to_file(tmpfile, filename); |
182005b9 DB |
779 | } |
780 | ||
b3661567 | 781 | static int setup_index(struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
782 | { |
783 | struct packed_git *new_pack; | |
784 | if (has_pack_file(sha1)) | |
785 | return 0; // don't list this as something we can get | |
786 | ||
b3661567 | 787 | if (fetch_index(repo, sha1)) |
182005b9 DB |
788 | return -1; |
789 | ||
790 | new_pack = parse_pack_index(sha1); | |
b3661567 DB |
791 | new_pack->next = repo->packs; |
792 | repo->packs = new_pack; | |
182005b9 DB |
793 | return 0; |
794 | } | |
795 | ||
acc075a8 | 796 | static void process_alternates(void *callback_data) |
b3661567 | 797 | { |
acc075a8 NH |
798 | struct alt_request *alt_req = (struct alt_request *)callback_data; |
799 | struct active_request_slot *slot = alt_req->slot; | |
1d389ab6 | 800 | struct alt_base *tail = alt; |
acc075a8 | 801 | char *base = alt_req->base; |
bc8f2652 | 802 | static const char null_byte = '\0'; |
acc075a8 NH |
803 | char *data; |
804 | int i = 0; | |
1d389ab6 | 805 | |
acc075a8 NH |
806 | if (alt_req->http_specific) { |
807 | if (slot->curl_result != CURLE_OK || | |
808 | !alt_req->buffer->posn) { | |
809 | ||
810 | /* Try reusing the slot to get non-http alternates */ | |
811 | alt_req->http_specific = 0; | |
812 | sprintf(alt_req->url, "%s/objects/info/alternates", | |
813 | base); | |
814 | curl_easy_setopt(slot->curl, CURLOPT_URL, | |
815 | alt_req->url); | |
816 | active_requests++; | |
817 | slot->in_use = 1; | |
818 | slot->done = 0; | |
1d389ab6 | 819 | if (start_active_slot(slot)) { |
acc075a8 NH |
820 | return; |
821 | } else { | |
822 | got_alternates = -1; | |
823 | slot->done = 1; | |
824 | return; | |
1d389ab6 | 825 | } |
b3661567 | 826 | } |
acc075a8 NH |
827 | } else if (slot->curl_result != CURLE_OK) { |
828 | if (slot->http_code != 404) { | |
829 | got_alternates = -1; | |
830 | return; | |
831 | } | |
b3661567 DB |
832 | } |
833 | ||
acc075a8 NH |
834 | fwrite_buffer_dynamic(&null_byte, 1, 1, alt_req->buffer); |
835 | alt_req->buffer->posn--; | |
836 | data = alt_req->buffer->buffer; | |
1b0c1e67 | 837 | |
acc075a8 | 838 | while (i < alt_req->buffer->posn) { |
b3661567 | 839 | int posn = i; |
acc075a8 | 840 | while (posn < alt_req->buffer->posn && data[posn] != '\n') |
b3661567 DB |
841 | posn++; |
842 | if (data[posn] == '\n') { | |
1b0c1e67 DB |
843 | int okay = 0; |
844 | int serverlen = 0; | |
845 | struct alt_base *newalt; | |
846 | char *target = NULL; | |
b3661567 | 847 | if (data[i] == '/') { |
1b0c1e67 DB |
848 | serverlen = strchr(base + 8, '/') - base; |
849 | okay = 1; | |
850 | } else if (!memcmp(data + i, "../", 3)) { | |
851 | i += 3; | |
852 | serverlen = strlen(base); | |
853 | while (i + 2 < posn && | |
854 | !memcmp(data + i, "../", 3)) { | |
855 | do { | |
856 | serverlen--; | |
857 | } while (serverlen && | |
858 | base[serverlen - 1] != '/'); | |
859 | i += 3; | |
860 | } | |
861 | // If the server got removed, give up. | |
862 | okay = strchr(base, ':') - base + 3 < | |
863 | serverlen; | |
acc075a8 | 864 | } else if (alt_req->http_specific) { |
1b0c1e67 DB |
865 | char *colon = strchr(data + i, ':'); |
866 | char *slash = strchr(data + i, '/'); | |
867 | if (colon && slash && colon < data + posn && | |
868 | slash < data + posn && colon < slash) { | |
869 | okay = 1; | |
870 | } | |
871 | } | |
872 | // skip 'objects' at end | |
873 | if (okay) { | |
874 | target = xmalloc(serverlen + posn - i - 6); | |
b3661567 DB |
875 | strncpy(target, base, serverlen); |
876 | strncpy(target + serverlen, data + i, | |
877 | posn - i - 7); | |
878 | target[serverlen + posn - i - 7] = '\0'; | |
879 | if (get_verbosely) | |
880 | fprintf(stderr, | |
881 | "Also look at %s\n", target); | |
882 | newalt = xmalloc(sizeof(*newalt)); | |
1d389ab6 | 883 | newalt->next = NULL; |
b3661567 DB |
884 | newalt->base = target; |
885 | newalt->got_indices = 0; | |
886 | newalt->packs = NULL; | |
1d389ab6 NH |
887 | while (tail->next != NULL) |
888 | tail = tail->next; | |
889 | tail->next = newalt; | |
b3661567 DB |
890 | } |
891 | } | |
892 | i = posn + 1; | |
893 | } | |
bc8f2652 | 894 | |
f7eb290f | 895 | got_alternates = 1; |
acc075a8 NH |
896 | } |
897 | ||
898 | static void fetch_alternates(char *base) | |
899 | { | |
900 | struct buffer buffer; | |
901 | char *url; | |
902 | char *data; | |
903 | struct active_request_slot *slot; | |
904 | static struct alt_request alt_req; | |
905 | int num_transfers; | |
906 | ||
907 | /* If another request has already started fetching alternates, | |
908 | wait for them to arrive and return to processing this request's | |
909 | curl message */ | |
910 | while (got_alternates == 0) { | |
911 | curl_multi_perform(curlm, &num_transfers); | |
912 | process_curl_messages(); | |
913 | process_request_queue(); | |
914 | } | |
915 | ||
916 | /* Nothing to do if they've already been fetched */ | |
917 | if (got_alternates == 1) | |
918 | return; | |
919 | ||
920 | /* Start the fetch */ | |
921 | got_alternates = 0; | |
922 | ||
923 | data = xmalloc(4096); | |
924 | buffer.size = 4096; | |
925 | buffer.posn = 0; | |
926 | buffer.buffer = data; | |
927 | ||
928 | if (get_verbosely) | |
929 | fprintf(stderr, "Getting alternates list for %s\n", base); | |
930 | ||
931 | url = xmalloc(strlen(base) + 31); | |
932 | sprintf(url, "%s/objects/info/http-alternates", base); | |
933 | ||
934 | /* Use a callback to process the result, since another request | |
935 | may fail and need to have alternates loaded before continuing */ | |
936 | slot = get_active_slot(); | |
937 | slot->callback_func = process_alternates; | |
938 | slot->callback_data = &alt_req; | |
939 | ||
940 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
941 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, | |
942 | fwrite_buffer_dynamic); | |
943 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
944 | ||
945 | alt_req.base = base; | |
946 | alt_req.url = url; | |
947 | alt_req.buffer = &buffer; | |
948 | alt_req.http_specific = 1; | |
949 | alt_req.slot = slot; | |
950 | ||
951 | if (start_active_slot(slot)) | |
952 | run_active_slot(slot); | |
953 | else | |
954 | got_alternates = -1; | |
955 | ||
956 | free(data); | |
957 | free(url); | |
b3661567 DB |
958 | } |
959 | ||
960 | static int fetch_indices(struct alt_base *repo) | |
182005b9 DB |
961 | { |
962 | unsigned char sha1[20]; | |
963 | char *url; | |
964 | struct buffer buffer; | |
965 | char *data; | |
966 | int i = 0; | |
967 | ||
1d389ab6 NH |
968 | struct active_request_slot *slot; |
969 | ||
b3661567 | 970 | if (repo->got_indices) |
182005b9 DB |
971 | return 0; |
972 | ||
973 | data = xmalloc(4096); | |
974 | buffer.size = 4096; | |
975 | buffer.posn = 0; | |
976 | buffer.buffer = data; | |
977 | ||
978 | if (get_verbosely) | |
6fd72e39 | 979 | fprintf(stderr, "Getting pack list for %s\n", repo->base); |
182005b9 | 980 | |
b3661567 DB |
981 | url = xmalloc(strlen(repo->base) + 21); |
982 | sprintf(url, "%s/objects/info/packs", repo->base); | |
182005b9 | 983 | |
1d389ab6 NH |
984 | slot = get_active_slot(); |
985 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
bc8f2652 SV |
986 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, |
987 | fwrite_buffer_dynamic); | |
1d389ab6 NH |
988 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
989 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
990 | if (start_active_slot(slot)) { | |
991 | run_active_slot(slot); | |
bc8f2652 SV |
992 | if (slot->curl_result != CURLE_OK) { |
993 | free(buffer.buffer); | |
1d389ab6 | 994 | return error("%s", curl_errorstr); |
bc8f2652 | 995 | } |
1d389ab6 | 996 | } else { |
bc8f2652 | 997 | free(buffer.buffer); |
1d389ab6 NH |
998 | return error("Unable to start request"); |
999 | } | |
182005b9 | 1000 | |
bc8f2652 | 1001 | data = buffer.buffer; |
b3661567 | 1002 | while (i < buffer.posn) { |
182005b9 DB |
1003 | switch (data[i]) { |
1004 | case 'P': | |
1005 | i++; | |
1006 | if (i + 52 < buffer.posn && | |
1007 | !strncmp(data + i, " pack-", 6) && | |
1008 | !strncmp(data + i + 46, ".pack\n", 6)) { | |
1009 | get_sha1_hex(data + i + 6, sha1); | |
b3661567 | 1010 | setup_index(repo, sha1); |
182005b9 DB |
1011 | i += 51; |
1012 | break; | |
1013 | } | |
1014 | default: | |
1015 | while (data[i] != '\n') | |
1016 | i++; | |
1017 | } | |
1018 | i++; | |
b3661567 | 1019 | } |
182005b9 | 1020 | |
bc8f2652 | 1021 | free(buffer.buffer); |
b3661567 | 1022 | repo->got_indices = 1; |
182005b9 DB |
1023 | return 0; |
1024 | } | |
1025 | ||
b3661567 | 1026 | static int fetch_pack(struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
1027 | { |
1028 | char *url; | |
1029 | struct packed_git *target; | |
1030 | struct packed_git **lst; | |
1031 | FILE *packfile; | |
1032 | char *filename; | |
49a0f240 NH |
1033 | char tmpfile[PATH_MAX]; |
1034 | int ret; | |
1035 | long prev_posn = 0; | |
1036 | char range[RANGE_HEADER_SIZE]; | |
1037 | struct curl_slist *range_header = NULL; | |
1d389ab6 NH |
1038 | |
1039 | struct active_request_slot *slot; | |
182005b9 | 1040 | |
b3661567 | 1041 | if (fetch_indices(repo)) |
182005b9 | 1042 | return -1; |
b3661567 | 1043 | target = find_sha1_pack(sha1, repo->packs); |
182005b9 | 1044 | if (!target) |
b3661567 | 1045 | return -1; |
182005b9 DB |
1046 | |
1047 | if (get_verbosely) { | |
1048 | fprintf(stderr, "Getting pack %s\n", | |
1049 | sha1_to_hex(target->sha1)); | |
1050 | fprintf(stderr, " which contains %s\n", | |
1051 | sha1_to_hex(sha1)); | |
1052 | } | |
1053 | ||
b3661567 | 1054 | url = xmalloc(strlen(repo->base) + 65); |
182005b9 | 1055 | sprintf(url, "%s/objects/pack/pack-%s.pack", |
b3661567 | 1056 | repo->base, sha1_to_hex(target->sha1)); |
182005b9 DB |
1057 | |
1058 | filename = sha1_pack_name(target->sha1); | |
49a0f240 NH |
1059 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
1060 | packfile = fopen(tmpfile, "a"); | |
182005b9 DB |
1061 | if (!packfile) |
1062 | return error("Unable to open local file %s for pack", | |
1063 | filename); | |
1064 | ||
1d389ab6 NH |
1065 | slot = get_active_slot(); |
1066 | curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile); | |
1067 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
1068 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 1069 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 | 1070 | slot->local = packfile; |
1ddea77e | 1071 | |
49a0f240 NH |
1072 | /* If there is data present from a previous transfer attempt, |
1073 | resume where it left off */ | |
1074 | prev_posn = ftell(packfile); | |
1075 | if (prev_posn>0) { | |
1076 | if (get_verbosely) | |
1077 | fprintf(stderr, | |
1078 | "Resuming fetch of pack %s at byte %ld\n", | |
1079 | sha1_to_hex(target->sha1), prev_posn); | |
1080 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
1081 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 1082 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
1083 | } |
1084 | ||
1d389ab6 NH |
1085 | if (start_active_slot(slot)) { |
1086 | run_active_slot(slot); | |
1087 | if (slot->curl_result != CURLE_OK) { | |
1088 | fclose(packfile); | |
1089 | return error("Unable to get pack file %s\n%s", url, | |
1090 | curl_errorstr); | |
1091 | } | |
1092 | } else { | |
313c4714 | 1093 | fclose(packfile); |
1d389ab6 | 1094 | return error("Unable to start request"); |
182005b9 DB |
1095 | } |
1096 | ||
1097 | fclose(packfile); | |
1098 | ||
b721e01f | 1099 | ret = move_temp_to_file(tmpfile, filename); |
49a0f240 | 1100 | if (ret) |
b721e01f | 1101 | return ret; |
49a0f240 | 1102 | |
b3661567 | 1103 | lst = &repo->packs; |
182005b9 DB |
1104 | while (*lst != target) |
1105 | lst = &((*lst)->next); | |
1106 | *lst = (*lst)->next; | |
1107 | ||
271421cd JH |
1108 | if (verify_pack(target, 0)) |
1109 | return -1; | |
182005b9 DB |
1110 | install_packed_git(target); |
1111 | ||
1112 | return 0; | |
1113 | } | |
1114 | ||
a7928f8e | 1115 | static int fetch_object(struct alt_base *repo, unsigned char *sha1) |
6eb7ed54 DB |
1116 | { |
1117 | char *hex = sha1_to_hex(sha1); | |
09d92083 | 1118 | int ret; |
1d389ab6 | 1119 | struct transfer_request *request = request_queue_head; |
1d389ab6 NH |
1120 | |
1121 | while (request != NULL && memcmp(request->sha1, sha1, 20)) | |
1122 | request = request->next; | |
1123 | if (request == NULL) | |
1124 | return error("Couldn't find request for %s in the queue", hex); | |
1125 | ||
11f0dafe NH |
1126 | if (has_sha1_file(request->sha1)) { |
1127 | release_request(request); | |
1128 | return 0; | |
1129 | } | |
1130 | ||
a7a8d378 | 1131 | #ifdef USE_CURL_MULTI |
1d389ab6 | 1132 | while (request->state == WAITING) { |
f5dce806 | 1133 | int num_transfers; |
1d389ab6 NH |
1134 | curl_multi_perform(curlm, &num_transfers); |
1135 | if (num_transfers < active_requests) { | |
1136 | process_curl_messages(); | |
1137 | process_request_queue(); | |
1138 | } | |
1139 | } | |
a7a8d378 NH |
1140 | #else |
1141 | start_request(request); | |
1142 | #endif | |
6eb7ed54 | 1143 | |
a7a8d378 | 1144 | while (request->state == ACTIVE) { |
1d389ab6 | 1145 | run_active_slot(request->slot); |
a7a8d378 NH |
1146 | #ifndef USE_CURL_MULTI |
1147 | request->curl_result = request->slot->curl_result; | |
f7eb290f | 1148 | request->http_code = request->slot->http_code; |
a7a8d378 NH |
1149 | request->slot = NULL; |
1150 | ||
1151 | /* Use alternates if necessary */ | |
f7eb290f NH |
1152 | if (request->http_code == 404) { |
1153 | fetch_alternates(alt->base); | |
1154 | if (request->repo->next != NULL) { | |
1155 | request->repo = request->repo->next; | |
313c4714 | 1156 | close(request->local); request->local = -1; |
f7eb290f NH |
1157 | start_request(request); |
1158 | } | |
a7a8d378 NH |
1159 | } else { |
1160 | finish_request(request); | |
1161 | request->state = COMPLETE; | |
1162 | } | |
1163 | #endif | |
1164 | } | |
313c4714 PB |
1165 | if (request->local != -1) { |
1166 | close(request->local); request->local = -1; | |
1167 | } | |
6eb7ed54 | 1168 | |
1d389ab6 NH |
1169 | if (request->state == ABORTED) { |
1170 | release_request(request); | |
1171 | return error("Request for %s aborted", hex); | |
49a0f240 | 1172 | } |
49a0f240 | 1173 | |
1d389ab6 | 1174 | if (request->curl_result != CURLE_OK && request->http_code != 416) { |
e2029eb9 PB |
1175 | if (request->http_code == 404) |
1176 | ret = -1; /* Be silent, it is probably in a pack. */ | |
1177 | else | |
1178 | ret = error("%s (curl_result = %d, http_code = %ld, sha1 = %s)", | |
1179 | request->errorstr, request->curl_result, | |
1180 | request->http_code, hex); | |
1d389ab6 NH |
1181 | release_request(request); |
1182 | return ret; | |
49a0f240 NH |
1183 | } |
1184 | ||
1d389ab6 NH |
1185 | if (request->zret != Z_STREAM_END) { |
1186 | ret = error("File %s (%s) corrupt\n", hex, request->url); | |
1187 | release_request(request); | |
1188 | return ret; | |
49a0f240 NH |
1189 | } |
1190 | ||
1d389ab6 NH |
1191 | if (memcmp(request->sha1, request->real_sha1, 20)) { |
1192 | release_request(request); | |
1193 | return error("File %s has bad hash\n", hex); | |
182005b9 | 1194 | } |
6eb7ed54 | 1195 | |
1d389ab6 NH |
1196 | if (request->rename < 0) { |
1197 | ret = error("unable to write sha1 filename %s: %s", | |
1198 | request->filename, | |
1199 | strerror(request->rename)); | |
1200 | release_request(request); | |
1201 | return ret; | |
6eb7ed54 | 1202 | } |
49a0f240 | 1203 | |
1d389ab6 | 1204 | release_request(request); |
6eb7ed54 DB |
1205 | return 0; |
1206 | } | |
1207 | ||
b3661567 DB |
1208 | int fetch(unsigned char *sha1) |
1209 | { | |
1210 | struct alt_base *altbase = alt; | |
1d389ab6 NH |
1211 | |
1212 | if (!fetch_object(altbase, sha1)) | |
1213 | return 0; | |
b3661567 | 1214 | while (altbase) { |
b3661567 DB |
1215 | if (!fetch_pack(altbase, sha1)) |
1216 | return 0; | |
f7eb290f | 1217 | fetch_alternates(alt->base); |
b3661567 DB |
1218 | altbase = altbase->next; |
1219 | } | |
1220 | return error("Unable to find %s under %s\n", sha1_to_hex(sha1), | |
1d389ab6 | 1221 | alt->base); |
b3661567 DB |
1222 | } |
1223 | ||
94fa447a JH |
1224 | static inline int needs_quote(int ch) |
1225 | { | |
1226 | switch (ch) { | |
1227 | case '/': case '-': case '.': | |
1228 | case 'A'...'Z': case 'a'...'z': case '0'...'9': | |
1229 | return 0; | |
1230 | default: | |
1231 | return 1; | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | static inline int hex(int v) | |
1236 | { | |
1237 | if (v < 10) return '0' + v; | |
1238 | else return 'A' + v - 10; | |
1239 | } | |
1240 | ||
1241 | static char *quote_ref_url(const char *base, const char *ref) | |
1242 | { | |
1243 | const char *cp; | |
1244 | char *dp, *qref; | |
1245 | int len, baselen, ch; | |
1246 | ||
1247 | baselen = strlen(base); | |
1248 | len = baselen + 6; /* "refs/" + NUL */ | |
1249 | for (cp = ref; (ch = *cp) != 0; cp++, len++) | |
1250 | if (needs_quote(ch)) | |
1251 | len += 2; /* extra two hex plus replacement % */ | |
1252 | qref = xmalloc(len); | |
1253 | memcpy(qref, base, baselen); | |
1254 | memcpy(qref + baselen, "refs/", 5); | |
1255 | for (cp = ref, dp = qref + baselen + 5; (ch = *cp) != 0; cp++) { | |
1256 | if (needs_quote(ch)) { | |
1257 | *dp++ = '%'; | |
1258 | *dp++ = hex((ch >> 4) & 0xF); | |
1259 | *dp++ = hex(ch & 0xF); | |
1260 | } | |
1261 | else | |
1262 | *dp++ = ch; | |
1263 | } | |
1264 | *dp = 0; | |
1265 | ||
1266 | return qref; | |
1267 | } | |
1268 | ||
cd541a68 DB |
1269 | int fetch_ref(char *ref, unsigned char *sha1) |
1270 | { | |
94fa447a | 1271 | char *url; |
fa3e0655 DB |
1272 | char hex[42]; |
1273 | struct buffer buffer; | |
1d389ab6 NH |
1274 | char *base = alt->base; |
1275 | struct active_request_slot *slot; | |
fa3e0655 DB |
1276 | buffer.size = 41; |
1277 | buffer.posn = 0; | |
1278 | buffer.buffer = hex; | |
1279 | hex[41] = '\0'; | |
1280 | ||
94fa447a | 1281 | url = quote_ref_url(base, ref); |
1d389ab6 NH |
1282 | slot = get_active_slot(); |
1283 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
1284 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
1285 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
1286 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
1287 | if (start_active_slot(slot)) { | |
1288 | run_active_slot(slot); | |
1289 | if (slot->curl_result != CURLE_OK) | |
1290 | return error("Couldn't get %s for %s\n%s", | |
1291 | url, ref, curl_errorstr); | |
1292 | } else { | |
1293 | return error("Unable to start request"); | |
1294 | } | |
fa3e0655 DB |
1295 | |
1296 | hex[40] = '\0'; | |
1297 | get_sha1_hex(hex, sha1); | |
1298 | return 0; | |
cd541a68 DB |
1299 | } |
1300 | ||
6eb7ed54 DB |
1301 | int main(int argc, char **argv) |
1302 | { | |
1303 | char *commit_id; | |
1304 | char *url; | |
1305 | int arg = 1; | |
1d389ab6 | 1306 | struct active_request_slot *slot; |
e0004e28 NH |
1307 | char *low_speed_limit; |
1308 | char *low_speed_time; | |
7b9ae53e NH |
1309 | char *wait_url; |
1310 | int rc = 0; | |
6eb7ed54 DB |
1311 | |
1312 | while (arg < argc && argv[arg][0] == '-') { | |
1313 | if (argv[arg][1] == 't') { | |
4250a5e5 | 1314 | get_tree = 1; |
6eb7ed54 | 1315 | } else if (argv[arg][1] == 'c') { |
4250a5e5 | 1316 | get_history = 1; |
6eb7ed54 | 1317 | } else if (argv[arg][1] == 'a') { |
4250a5e5 DB |
1318 | get_all = 1; |
1319 | get_tree = 1; | |
1320 | get_history = 1; | |
e78d9772 JH |
1321 | } else if (argv[arg][1] == 'v') { |
1322 | get_verbosely = 1; | |
fa3e0655 DB |
1323 | } else if (argv[arg][1] == 'w') { |
1324 | write_ref = argv[arg + 1]; | |
1325 | arg++; | |
820eca68 DB |
1326 | } else if (!strcmp(argv[arg], "--recover")) { |
1327 | get_recover = 1; | |
6eb7ed54 DB |
1328 | } |
1329 | arg++; | |
1330 | } | |
1331 | if (argc < arg + 2) { | |
215a7ad1 | 1332 | usage("git-http-fetch [-c] [-t] [-a] [-d] [-v] [--recover] [-w ref] commit-id url"); |
6eb7ed54 DB |
1333 | return 1; |
1334 | } | |
1335 | commit_id = argv[arg]; | |
1336 | url = argv[arg + 1]; | |
1337 | ||
6eb7ed54 DB |
1338 | curl_global_init(CURL_GLOBAL_ALL); |
1339 | ||
a7a8d378 | 1340 | #ifdef USE_CURL_MULTI |
f5dce806 PH |
1341 | { |
1342 | char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS"); | |
1343 | if (http_max_requests != NULL) | |
1344 | max_requests = atoi(http_max_requests); | |
1345 | } | |
38079239 | 1346 | |
1d389ab6 NH |
1347 | curlm = curl_multi_init(); |
1348 | if (curlm == NULL) { | |
1349 | fprintf(stderr, "Error creating curl multi handle.\n"); | |
1350 | return 1; | |
1351 | } | |
a7a8d378 | 1352 | #endif |
d402d556 NH |
1353 | |
1354 | if (getenv("GIT_SSL_NO_VERIFY")) | |
1355 | curl_ssl_verify = 0; | |
1356 | ||
1357 | ssl_cert = getenv("GIT_SSL_CERT"); | |
1358 | #if LIBCURL_VERSION_NUM >= 0x070902 | |
1359 | ssl_key = getenv("GIT_SSL_KEY"); | |
1360 | #endif | |
1361 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
1362 | ssl_capath = getenv("GIT_SSL_CAPATH"); | |
1363 | #endif | |
1364 | ssl_cainfo = getenv("GIT_SSL_CAINFO"); | |
1365 | ||
e0004e28 NH |
1366 | low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT"); |
1367 | if (low_speed_limit != NULL) | |
1368 | curl_low_speed_limit = strtol(low_speed_limit, NULL, 10); | |
1369 | low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME"); | |
1370 | if (low_speed_time != NULL) | |
1371 | curl_low_speed_time = strtol(low_speed_time, NULL, 10); | |
1372 | ||
d402d556 NH |
1373 | git_config(http_options); |
1374 | ||
1375 | if (curl_ssl_verify == -1) | |
1376 | curl_ssl_verify = 1; | |
1377 | ||
1378 | #ifdef USE_CURL_MULTI | |
1379 | if (max_requests < 1) | |
1380 | max_requests = DEFAULT_MAX_REQUESTS; | |
1381 | #endif | |
1382 | ||
03126006 | 1383 | pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache"); |
1db69b57 | 1384 | no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:"); |
49a0f240 | 1385 | no_range_header = curl_slist_append(no_range_header, "Range:"); |
6eb7ed54 | 1386 | |
7baa3e86 JS |
1387 | #ifndef NO_CURL_EASY_DUPHANDLE |
1388 | curl_default = get_curl_handle(); | |
9f6cf65e | 1389 | #endif |
3dcb90f5 | 1390 | |
b3661567 DB |
1391 | alt = xmalloc(sizeof(*alt)); |
1392 | alt->base = url; | |
1393 | alt->got_indices = 0; | |
1394 | alt->packs = NULL; | |
1395 | alt->next = NULL; | |
6eb7ed54 | 1396 | |
4250a5e5 | 1397 | if (pull(commit_id)) |
7b9ae53e | 1398 | rc = 1; |
6eb7ed54 | 1399 | |
03126006 | 1400 | curl_slist_free_all(pragma_header); |
1db69b57 | 1401 | curl_slist_free_all(no_pragma_header); |
1d389ab6 | 1402 | curl_slist_free_all(no_range_header); |
7baa3e86 | 1403 | #ifndef NO_CURL_EASY_DUPHANDLE |
1d389ab6 | 1404 | curl_easy_cleanup(curl_default); |
7baa3e86 | 1405 | #endif |
1d389ab6 NH |
1406 | slot = active_queue_head; |
1407 | while (slot != NULL) { | |
7b9ae53e NH |
1408 | if (slot->in_use) { |
1409 | if (get_verbosely) { | |
1410 | curl_easy_getinfo(slot->curl, | |
1411 | CURLINFO_EFFECTIVE_URL, | |
1412 | &wait_url); | |
1413 | fprintf(stderr, "Waiting for %s\n", wait_url); | |
1414 | } | |
1415 | run_active_slot(slot); | |
1416 | } | |
f1a906a3 NH |
1417 | if (slot->curl != NULL) |
1418 | curl_easy_cleanup(slot->curl); | |
1d389ab6 NH |
1419 | slot = slot->next; |
1420 | } | |
a7a8d378 | 1421 | #ifdef USE_CURL_MULTI |
1d389ab6 | 1422 | curl_multi_cleanup(curlm); |
a7a8d378 | 1423 | #endif |
6eb7ed54 | 1424 | curl_global_cleanup(); |
7b9ae53e | 1425 | return rc; |
6eb7ed54 | 1426 | } |