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