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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" |
30ae764b | 4 | #include "walker.h" |
29508e1e | 5 | #include "http.h" |
7baa3e86 | 6 | |
49a0f240 NH |
7 | #define PREV_BUF_SIZE 4096 |
8 | #define RANGE_HEADER_SIZE 30 | |
9 | ||
b3661567 DB |
10 | struct alt_base |
11 | { | |
2afea3bc | 12 | char *base; |
b3661567 DB |
13 | int got_indices; |
14 | struct packed_git *packs; | |
15 | struct alt_base *next; | |
16 | }; | |
17 | ||
e388ab74 | 18 | enum object_request_state { |
1d389ab6 NH |
19 | WAITING, |
20 | ABORTED, | |
21 | ACTIVE, | |
22 | COMPLETE, | |
23 | }; | |
6eb7ed54 | 24 | |
e388ab74 | 25 | struct object_request |
1d389ab6 | 26 | { |
30ae764b | 27 | struct walker *walker; |
1d389ab6 NH |
28 | unsigned char sha1[20]; |
29 | struct alt_base *repo; | |
30 | char *url; | |
31 | char filename[PATH_MAX]; | |
32 | char tmpfile[PATH_MAX]; | |
33 | int local; | |
e388ab74 | 34 | enum object_request_state state; |
1d389ab6 NH |
35 | CURLcode curl_result; |
36 | char errorstr[CURL_ERROR_SIZE]; | |
37 | long http_code; | |
38 | unsigned char real_sha1[20]; | |
39 | SHA_CTX c; | |
40 | z_stream stream; | |
41 | int zret; | |
42 | int rename; | |
43 | struct active_request_slot *slot; | |
e388ab74 | 44 | struct object_request *next; |
1d389ab6 NH |
45 | }; |
46 | ||
e388ab74 | 47 | struct alternates_request { |
30ae764b | 48 | struct walker *walker; |
8e29f6a0 | 49 | const char *base; |
acc075a8 NH |
50 | char *url; |
51 | struct buffer *buffer; | |
52 | struct active_request_slot *slot; | |
53 | int http_specific; | |
54 | }; | |
55 | ||
30ae764b DB |
56 | struct walker_data { |
57 | const char *url; | |
58 | int got_alternates; | |
59 | struct alt_base *alt; | |
60 | struct curl_slist *no_pragma_header; | |
61 | }; | |
62 | ||
96f1e58f | 63 | static struct object_request *object_queue_head; |
bc8f2652 | 64 | |
182005b9 DB |
65 | static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb, |
66 | void *data) | |
67 | { | |
bf0f910d | 68 | unsigned char expn[4096]; |
6eb7ed54 DB |
69 | size_t size = eltsize * nmemb; |
70 | int posn = 0; | |
e388ab74 | 71 | struct object_request *obj_req = (struct object_request *)data; |
6eb7ed54 | 72 | do { |
93822c22 | 73 | ssize_t retval = xwrite(obj_req->local, |
1d7f171c | 74 | (char *) ptr + posn, size - posn); |
6eb7ed54 DB |
75 | if (retval < 0) |
76 | return posn; | |
77 | posn += retval; | |
78 | } while (posn < size); | |
79 | ||
e388ab74 NH |
80 | obj_req->stream.avail_in = size; |
81 | obj_req->stream.next_in = ptr; | |
6eb7ed54 | 82 | do { |
e388ab74 NH |
83 | obj_req->stream.next_out = expn; |
84 | obj_req->stream.avail_out = sizeof(expn); | |
85 | obj_req->zret = inflate(&obj_req->stream, Z_SYNC_FLUSH); | |
86 | SHA1_Update(&obj_req->c, expn, | |
87 | sizeof(expn) - obj_req->stream.avail_out); | |
88 | } while (obj_req->stream.avail_in && obj_req->zret == Z_OK); | |
1d389ab6 | 89 | data_received++; |
6eb7ed54 DB |
90 | return size; |
91 | } | |
92 | ||
be4a015b JH |
93 | static int missing__target(int code, int result) |
94 | { | |
95 | return /* file:// URL -- do we ever use one??? */ | |
96 | (result == CURLE_FILE_COULDNT_READ_FILE) || | |
97 | /* http:// and https:// URL */ | |
4adffc7b JH |
98 | (code == 404 && result == CURLE_HTTP_RETURNED_ERROR) || |
99 | /* ftp:// URL */ | |
100 | (code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE) | |
be4a015b JH |
101 | ; |
102 | } | |
103 | ||
104 | #define missing_target(a) missing__target((a)->http_code, (a)->curl_result) | |
105 | ||
30ae764b | 106 | static void fetch_alternates(struct walker *walker, const char *base); |
1d389ab6 | 107 | |
29508e1e | 108 | static void process_object_response(void *callback_data); |
1d389ab6 | 109 | |
30ae764b DB |
110 | static void start_object_request(struct walker *walker, |
111 | struct object_request *obj_req) | |
1d389ab6 | 112 | { |
e388ab74 | 113 | char *hex = sha1_to_hex(obj_req->sha1); |
1d389ab6 NH |
114 | char prevfile[PATH_MAX]; |
115 | char *url; | |
116 | char *posn; | |
117 | int prevlocal; | |
118 | unsigned char prev_buf[PREV_BUF_SIZE]; | |
119 | ssize_t prev_read = 0; | |
120 | long prev_posn = 0; | |
121 | char range[RANGE_HEADER_SIZE]; | |
122 | struct curl_slist *range_header = NULL; | |
123 | struct active_request_slot *slot; | |
30ae764b | 124 | struct walker_data *data = walker->data; |
1d389ab6 | 125 | |
e388ab74 | 126 | snprintf(prevfile, sizeof(prevfile), "%s.prev", obj_req->filename); |
1d389ab6 | 127 | unlink(prevfile); |
e388ab74 NH |
128 | rename(obj_req->tmpfile, prevfile); |
129 | unlink(obj_req->tmpfile); | |
1d389ab6 | 130 | |
e388ab74 NH |
131 | if (obj_req->local != -1) |
132 | error("fd leakage in start: %d", obj_req->local); | |
133 | obj_req->local = open(obj_req->tmpfile, | |
1d389ab6 | 134 | O_WRONLY | O_CREAT | O_EXCL, 0666); |
b721e01f JH |
135 | /* This could have failed due to the "lazy directory creation"; |
136 | * try to mkdir the last path component. | |
137 | */ | |
e388ab74 NH |
138 | if (obj_req->local < 0 && errno == ENOENT) { |
139 | char *dir = strrchr(obj_req->tmpfile, '/'); | |
b721e01f JH |
140 | if (dir) { |
141 | *dir = 0; | |
e388ab74 | 142 | mkdir(obj_req->tmpfile, 0777); |
b721e01f JH |
143 | *dir = '/'; |
144 | } | |
e388ab74 | 145 | obj_req->local = open(obj_req->tmpfile, |
b721e01f JH |
146 | O_WRONLY | O_CREAT | O_EXCL, 0666); |
147 | } | |
148 | ||
e388ab74 NH |
149 | if (obj_req->local < 0) { |
150 | obj_req->state = ABORTED; | |
bd2afde8 | 151 | error("Couldn't create temporary file %s for %s: %s", |
e388ab74 | 152 | obj_req->tmpfile, obj_req->filename, strerror(errno)); |
1d389ab6 NH |
153 | return; |
154 | } | |
155 | ||
e388ab74 | 156 | memset(&obj_req->stream, 0, sizeof(obj_req->stream)); |
1d389ab6 | 157 | |
e388ab74 | 158 | inflateInit(&obj_req->stream); |
1d389ab6 | 159 | |
e388ab74 | 160 | SHA1_Init(&obj_req->c); |
1d389ab6 | 161 | |
2afea3bc GP |
162 | url = xmalloc(strlen(obj_req->repo->base) + 51); |
163 | obj_req->url = xmalloc(strlen(obj_req->repo->base) + 51); | |
e388ab74 NH |
164 | strcpy(url, obj_req->repo->base); |
165 | posn = url + strlen(obj_req->repo->base); | |
2afea3bc GP |
166 | strcpy(posn, "/objects/"); |
167 | posn += 9; | |
1d389ab6 NH |
168 | memcpy(posn, hex, 2); |
169 | posn += 2; | |
170 | *(posn++) = '/'; | |
171 | strcpy(posn, hex + 2); | |
e388ab74 | 172 | strcpy(obj_req->url, url); |
1d389ab6 NH |
173 | |
174 | /* If a previous temp file is present, process what was already | |
175 | fetched. */ | |
176 | prevlocal = open(prevfile, O_RDONLY); | |
177 | if (prevlocal != -1) { | |
178 | do { | |
93d26e4c | 179 | prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE); |
1d389ab6 NH |
180 | if (prev_read>0) { |
181 | if (fwrite_sha1_file(prev_buf, | |
182 | 1, | |
183 | prev_read, | |
e388ab74 | 184 | obj_req) == prev_read) { |
1d389ab6 NH |
185 | prev_posn += prev_read; |
186 | } else { | |
187 | prev_read = -1; | |
188 | } | |
189 | } | |
190 | } while (prev_read > 0); | |
191 | close(prevlocal); | |
192 | } | |
193 | unlink(prevfile); | |
194 | ||
195 | /* Reset inflate/SHA1 if there was an error reading the previous temp | |
196 | file; also rewind to the beginning of the local file. */ | |
197 | if (prev_read == -1) { | |
e388ab74 NH |
198 | memset(&obj_req->stream, 0, sizeof(obj_req->stream)); |
199 | inflateInit(&obj_req->stream); | |
200 | SHA1_Init(&obj_req->c); | |
1d389ab6 NH |
201 | if (prev_posn>0) { |
202 | prev_posn = 0; | |
b5da2467 | 203 | lseek(obj_req->local, 0, SEEK_SET); |
e388ab74 | 204 | ftruncate(obj_req->local, 0); |
1d389ab6 NH |
205 | } |
206 | } | |
207 | ||
208 | slot = get_active_slot(); | |
29508e1e | 209 | slot->callback_func = process_object_response; |
e388ab74 NH |
210 | slot->callback_data = obj_req; |
211 | obj_req->slot = slot; | |
29508e1e | 212 | |
e388ab74 | 213 | curl_easy_setopt(slot->curl, CURLOPT_FILE, obj_req); |
1d389ab6 | 214 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); |
e388ab74 | 215 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, obj_req->errorstr); |
1d389ab6 | 216 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
30ae764b | 217 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, data->no_pragma_header); |
1d389ab6 NH |
218 | |
219 | /* If we have successfully processed data from a previous fetch | |
220 | attempt, only fetch the data we don't already have. */ | |
221 | if (prev_posn>0) { | |
30ae764b | 222 | if (walker->get_verbosely) |
1d389ab6 NH |
223 | fprintf(stderr, |
224 | "Resuming fetch of object %s at byte %ld\n", | |
225 | hex, prev_posn); | |
226 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
227 | range_header = curl_slist_append(range_header, range); | |
228 | curl_easy_setopt(slot->curl, | |
229 | CURLOPT_HTTPHEADER, range_header); | |
230 | } | |
231 | ||
a7a8d378 | 232 | /* Try to get the request started, abort the request on error */ |
e388ab74 | 233 | obj_req->state = ACTIVE; |
1d389ab6 | 234 | if (!start_active_slot(slot)) { |
e388ab74 NH |
235 | obj_req->state = ABORTED; |
236 | obj_req->slot = NULL; | |
237 | close(obj_req->local); obj_req->local = -1; | |
238 | free(obj_req->url); | |
239 | return; | |
1d389ab6 | 240 | } |
1d389ab6 NH |
241 | } |
242 | ||
e388ab74 | 243 | static void finish_object_request(struct object_request *obj_req) |
1d389ab6 | 244 | { |
50496b21 NH |
245 | struct stat st; |
246 | ||
e388ab74 NH |
247 | fchmod(obj_req->local, 0444); |
248 | close(obj_req->local); obj_req->local = -1; | |
1d389ab6 | 249 | |
e388ab74 | 250 | if (obj_req->http_code == 416) { |
1d389ab6 | 251 | fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n"); |
e388ab74 NH |
252 | } else if (obj_req->curl_result != CURLE_OK) { |
253 | if (stat(obj_req->tmpfile, &st) == 0) | |
50496b21 | 254 | if (st.st_size == 0) |
e388ab74 | 255 | unlink(obj_req->tmpfile); |
1d389ab6 NH |
256 | return; |
257 | } | |
258 | ||
e388ab74 NH |
259 | inflateEnd(&obj_req->stream); |
260 | SHA1_Final(obj_req->real_sha1, &obj_req->c); | |
261 | if (obj_req->zret != Z_STREAM_END) { | |
262 | unlink(obj_req->tmpfile); | |
1d389ab6 NH |
263 | return; |
264 | } | |
a89fccd2 | 265 | if (hashcmp(obj_req->sha1, obj_req->real_sha1)) { |
e388ab74 | 266 | unlink(obj_req->tmpfile); |
1d389ab6 NH |
267 | return; |
268 | } | |
e388ab74 NH |
269 | obj_req->rename = |
270 | move_temp_to_file(obj_req->tmpfile, obj_req->filename); | |
1d389ab6 | 271 | |
e388ab74 | 272 | if (obj_req->rename == 0) |
30ae764b | 273 | walker_say(obj_req->walker, "got %s\n", sha1_to_hex(obj_req->sha1)); |
1d389ab6 NH |
274 | } |
275 | ||
29508e1e NH |
276 | static void process_object_response(void *callback_data) |
277 | { | |
e388ab74 NH |
278 | struct object_request *obj_req = |
279 | (struct object_request *)callback_data; | |
30ae764b DB |
280 | struct walker *walker = obj_req->walker; |
281 | struct walker_data *data = walker->data; | |
282 | struct alt_base *alt = data->alt; | |
29508e1e | 283 | |
e388ab74 NH |
284 | obj_req->curl_result = obj_req->slot->curl_result; |
285 | obj_req->http_code = obj_req->slot->http_code; | |
286 | obj_req->slot = NULL; | |
287 | obj_req->state = COMPLETE; | |
29508e1e NH |
288 | |
289 | /* Use alternates if necessary */ | |
be4a015b | 290 | if (missing_target(obj_req)) { |
30ae764b | 291 | fetch_alternates(walker, alt->base); |
e388ab74 NH |
292 | if (obj_req->repo->next != NULL) { |
293 | obj_req->repo = | |
294 | obj_req->repo->next; | |
295 | close(obj_req->local); | |
296 | obj_req->local = -1; | |
30ae764b | 297 | start_object_request(walker, obj_req); |
29508e1e NH |
298 | return; |
299 | } | |
300 | } | |
301 | ||
e388ab74 | 302 | finish_object_request(obj_req); |
29508e1e NH |
303 | } |
304 | ||
e388ab74 | 305 | static void release_object_request(struct object_request *obj_req) |
1d389ab6 | 306 | { |
e388ab74 | 307 | struct object_request *entry = object_queue_head; |
1d389ab6 | 308 | |
e388ab74 NH |
309 | if (obj_req->local != -1) |
310 | error("fd leakage in release: %d", obj_req->local); | |
311 | if (obj_req == object_queue_head) { | |
312 | object_queue_head = obj_req->next; | |
1d389ab6 | 313 | } else { |
e388ab74 | 314 | while (entry->next != NULL && entry->next != obj_req) |
1d389ab6 | 315 | entry = entry->next; |
e388ab74 | 316 | if (entry->next == obj_req) |
1d389ab6 NH |
317 | entry->next = entry->next->next; |
318 | } | |
319 | ||
e388ab74 NH |
320 | free(obj_req->url); |
321 | free(obj_req); | |
1d389ab6 NH |
322 | } |
323 | ||
a7a8d378 | 324 | #ifdef USE_CURL_MULTI |
30ae764b | 325 | static int fill_active_slot(struct walker *walker) |
1d389ab6 | 326 | { |
45c17412 | 327 | struct object_request *obj_req; |
1d389ab6 | 328 | |
45c17412 | 329 | for (obj_req = object_queue_head; obj_req; obj_req = obj_req->next) { |
e388ab74 NH |
330 | if (obj_req->state == WAITING) { |
331 | if (has_sha1_file(obj_req->sha1)) | |
09db444f | 332 | obj_req->state = COMPLETE; |
45c17412 | 333 | else { |
30ae764b | 334 | start_object_request(walker, obj_req); |
45c17412 DB |
335 | return 1; |
336 | } | |
f1a906a3 | 337 | } |
8fcf7f9a | 338 | } |
45c17412 | 339 | return 0; |
1d389ab6 | 340 | } |
a7a8d378 | 341 | #endif |
1d389ab6 | 342 | |
30ae764b | 343 | static void prefetch(struct walker *walker, unsigned char *sha1) |
1d389ab6 | 344 | { |
e388ab74 NH |
345 | struct object_request *newreq; |
346 | struct object_request *tail; | |
30ae764b | 347 | struct walker_data *data = walker->data; |
1d389ab6 NH |
348 | char *filename = sha1_file_name(sha1); |
349 | ||
350 | newreq = xmalloc(sizeof(*newreq)); | |
30ae764b | 351 | newreq->walker = walker; |
e702496e | 352 | hashcpy(newreq->sha1, sha1); |
30ae764b | 353 | newreq->repo = data->alt; |
1d389ab6 NH |
354 | newreq->url = NULL; |
355 | newreq->local = -1; | |
356 | newreq->state = WAITING; | |
357 | snprintf(newreq->filename, sizeof(newreq->filename), "%s", filename); | |
358 | snprintf(newreq->tmpfile, sizeof(newreq->tmpfile), | |
359 | "%s.temp", filename); | |
e8dff6ba | 360 | newreq->slot = NULL; |
1d389ab6 NH |
361 | newreq->next = NULL; |
362 | ||
e388ab74 NH |
363 | if (object_queue_head == NULL) { |
364 | object_queue_head = newreq; | |
1d389ab6 | 365 | } else { |
e388ab74 | 366 | tail = object_queue_head; |
1d389ab6 NH |
367 | while (tail->next != NULL) { |
368 | tail = tail->next; | |
369 | } | |
370 | tail->next = newreq; | |
371 | } | |
29508e1e | 372 | |
a7a8d378 | 373 | #ifdef USE_CURL_MULTI |
29508e1e NH |
374 | fill_active_slots(); |
375 | step_active_slots(); | |
a7a8d378 | 376 | #endif |
1d389ab6 NH |
377 | } |
378 | ||
30ae764b | 379 | static int fetch_index(struct walker *walker, struct alt_base *repo, unsigned char *sha1) |
182005b9 | 380 | { |
1d389ab6 | 381 | char *hex = sha1_to_hex(sha1); |
182005b9 DB |
382 | char *filename; |
383 | char *url; | |
49a0f240 | 384 | char tmpfile[PATH_MAX]; |
49a0f240 NH |
385 | long prev_posn = 0; |
386 | char range[RANGE_HEADER_SIZE]; | |
387 | struct curl_slist *range_header = NULL; | |
30ae764b | 388 | struct walker_data *data = walker->data; |
182005b9 DB |
389 | |
390 | FILE *indexfile; | |
1d389ab6 | 391 | struct active_request_slot *slot; |
cb754fdf | 392 | struct slot_results results; |
182005b9 DB |
393 | |
394 | if (has_pack_index(sha1)) | |
395 | return 0; | |
396 | ||
30ae764b | 397 | if (walker->get_verbosely) |
1d389ab6 | 398 | fprintf(stderr, "Getting index for pack %s\n", hex); |
8fcf7f9a | 399 | |
b3661567 | 400 | url = xmalloc(strlen(repo->base) + 64); |
1d389ab6 | 401 | sprintf(url, "%s/objects/pack/pack-%s.idx", repo->base, hex); |
8fcf7f9a | 402 | |
182005b9 | 403 | filename = sha1_pack_index_name(sha1); |
49a0f240 NH |
404 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
405 | indexfile = fopen(tmpfile, "a"); | |
182005b9 DB |
406 | if (!indexfile) |
407 | return error("Unable to open local file %s for pack index", | |
408 | filename); | |
409 | ||
1d389ab6 | 410 | slot = get_active_slot(); |
c8568e13 | 411 | slot->results = &results; |
1d389ab6 NH |
412 | curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile); |
413 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
414 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
30ae764b | 415 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, data->no_pragma_header); |
1d389ab6 NH |
416 | slot->local = indexfile; |
417 | ||
49a0f240 NH |
418 | /* If there is data present from a previous transfer attempt, |
419 | resume where it left off */ | |
420 | prev_posn = ftell(indexfile); | |
421 | if (prev_posn>0) { | |
30ae764b | 422 | if (walker->get_verbosely) |
49a0f240 NH |
423 | fprintf(stderr, |
424 | "Resuming fetch of index for pack %s at byte %ld\n", | |
1d389ab6 | 425 | hex, prev_posn); |
49a0f240 NH |
426 | sprintf(range, "Range: bytes=%ld-", prev_posn); |
427 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 428 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
429 | } |
430 | ||
1d389ab6 NH |
431 | if (start_active_slot(slot)) { |
432 | run_active_slot(slot); | |
c8568e13 | 433 | if (results.curl_result != CURLE_OK) { |
1d389ab6 NH |
434 | fclose(indexfile); |
435 | return error("Unable to get pack index %s\n%s", url, | |
436 | curl_errorstr); | |
437 | } | |
438 | } else { | |
313c4714 | 439 | fclose(indexfile); |
1d389ab6 | 440 | return error("Unable to start request"); |
182005b9 DB |
441 | } |
442 | ||
443 | fclose(indexfile); | |
49a0f240 | 444 | |
b721e01f | 445 | return move_temp_to_file(tmpfile, filename); |
182005b9 DB |
446 | } |
447 | ||
30ae764b | 448 | static int setup_index(struct walker *walker, struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
449 | { |
450 | struct packed_git *new_pack; | |
451 | if (has_pack_file(sha1)) | |
a9486b02 | 452 | return 0; /* don't list this as something we can get */ |
182005b9 | 453 | |
30ae764b | 454 | if (fetch_index(walker, repo, sha1)) |
182005b9 DB |
455 | return -1; |
456 | ||
457 | new_pack = parse_pack_index(sha1); | |
b3661567 DB |
458 | new_pack->next = repo->packs; |
459 | repo->packs = new_pack; | |
182005b9 DB |
460 | return 0; |
461 | } | |
462 | ||
e388ab74 | 463 | static void process_alternates_response(void *callback_data) |
b3661567 | 464 | { |
e388ab74 NH |
465 | struct alternates_request *alt_req = |
466 | (struct alternates_request *)callback_data; | |
30ae764b DB |
467 | struct walker *walker = alt_req->walker; |
468 | struct walker_data *cdata = walker->data; | |
acc075a8 | 469 | struct active_request_slot *slot = alt_req->slot; |
30ae764b | 470 | struct alt_base *tail = cdata->alt; |
8e29f6a0 | 471 | const char *base = alt_req->base; |
bc8f2652 | 472 | static const char null_byte = '\0'; |
acc075a8 NH |
473 | char *data; |
474 | int i = 0; | |
1d389ab6 | 475 | |
acc075a8 NH |
476 | if (alt_req->http_specific) { |
477 | if (slot->curl_result != CURLE_OK || | |
478 | !alt_req->buffer->posn) { | |
479 | ||
480 | /* Try reusing the slot to get non-http alternates */ | |
481 | alt_req->http_specific = 0; | |
482 | sprintf(alt_req->url, "%s/objects/info/alternates", | |
483 | base); | |
484 | curl_easy_setopt(slot->curl, CURLOPT_URL, | |
485 | alt_req->url); | |
486 | active_requests++; | |
487 | slot->in_use = 1; | |
c9826473 NH |
488 | if (slot->finished != NULL) |
489 | (*slot->finished) = 0; | |
a3f583cb | 490 | if (!start_active_slot(slot)) { |
30ae764b | 491 | cdata->got_alternates = -1; |
29508e1e | 492 | slot->in_use = 0; |
c9826473 NH |
493 | if (slot->finished != NULL) |
494 | (*slot->finished) = 1; | |
1d389ab6 | 495 | } |
a3f583cb | 496 | return; |
b3661567 | 497 | } |
acc075a8 | 498 | } else if (slot->curl_result != CURLE_OK) { |
be4a015b | 499 | if (!missing_target(slot)) { |
30ae764b | 500 | cdata->got_alternates = -1; |
acc075a8 NH |
501 | return; |
502 | } | |
b3661567 DB |
503 | } |
504 | ||
29508e1e | 505 | fwrite_buffer(&null_byte, 1, 1, alt_req->buffer); |
acc075a8 NH |
506 | alt_req->buffer->posn--; |
507 | data = alt_req->buffer->buffer; | |
1b0c1e67 | 508 | |
acc075a8 | 509 | while (i < alt_req->buffer->posn) { |
b3661567 | 510 | int posn = i; |
acc075a8 | 511 | while (posn < alt_req->buffer->posn && data[posn] != '\n') |
b3661567 DB |
512 | posn++; |
513 | if (data[posn] == '\n') { | |
1b0c1e67 DB |
514 | int okay = 0; |
515 | int serverlen = 0; | |
516 | struct alt_base *newalt; | |
517 | char *target = NULL; | |
b3661567 | 518 | if (data[i] == '/') { |
5df1e0d0 JH |
519 | /* This counts |
520 | * http://git.host/pub/scm/linux.git/ | |
521 | * -----------here^ | |
522 | * so memcpy(dst, base, serverlen) will | |
523 | * copy up to "...git.host". | |
524 | */ | |
525 | const char *colon_ss = strstr(base,"://"); | |
526 | if (colon_ss) { | |
527 | serverlen = (strchr(colon_ss + 3, '/') | |
528 | - base); | |
529 | okay = 1; | |
530 | } | |
1b0c1e67 | 531 | } else if (!memcmp(data + i, "../", 3)) { |
5df1e0d0 JH |
532 | /* Relative URL; chop the corresponding |
533 | * number of subpath from base (and ../ | |
534 | * from data), and concatenate the result. | |
535 | * | |
536 | * The code first drops ../ from data, and | |
537 | * then drops one ../ from data and one path | |
538 | * from base. IOW, one extra ../ is dropped | |
539 | * from data than path is dropped from base. | |
540 | * | |
541 | * This is not wrong. The alternate in | |
542 | * http://git.host/pub/scm/linux.git/ | |
543 | * to borrow from | |
544 | * http://git.host/pub/scm/linus.git/ | |
545 | * is ../../linus.git/objects/. You need | |
546 | * two ../../ to borrow from your direct | |
547 | * neighbour. | |
548 | */ | |
1b0c1e67 DB |
549 | i += 3; |
550 | serverlen = strlen(base); | |
8fcf7f9a | 551 | while (i + 2 < posn && |
1b0c1e67 DB |
552 | !memcmp(data + i, "../", 3)) { |
553 | do { | |
554 | serverlen--; | |
555 | } while (serverlen && | |
556 | base[serverlen - 1] != '/'); | |
557 | i += 3; | |
558 | } | |
a9486b02 | 559 | /* If the server got removed, give up. */ |
8fcf7f9a | 560 | okay = strchr(base, ':') - base + 3 < |
1b0c1e67 | 561 | serverlen; |
acc075a8 | 562 | } else if (alt_req->http_specific) { |
1b0c1e67 DB |
563 | char *colon = strchr(data + i, ':'); |
564 | char *slash = strchr(data + i, '/'); | |
565 | if (colon && slash && colon < data + posn && | |
566 | slash < data + posn && colon < slash) { | |
567 | okay = 1; | |
568 | } | |
569 | } | |
5df1e0d0 | 570 | /* skip "objects\n" at end */ |
1b0c1e67 DB |
571 | if (okay) { |
572 | target = xmalloc(serverlen + posn - i - 6); | |
5df1e0d0 JH |
573 | memcpy(target, base, serverlen); |
574 | memcpy(target + serverlen, data + i, | |
575 | posn - i - 7); | |
576 | target[serverlen + posn - i - 7] = 0; | |
30ae764b | 577 | if (walker->get_verbosely) |
8fcf7f9a | 578 | fprintf(stderr, |
b3661567 DB |
579 | "Also look at %s\n", target); |
580 | newalt = xmalloc(sizeof(*newalt)); | |
1d389ab6 | 581 | newalt->next = NULL; |
b3661567 DB |
582 | newalt->base = target; |
583 | newalt->got_indices = 0; | |
584 | newalt->packs = NULL; | |
8d9fbe57 | 585 | |
1d389ab6 NH |
586 | while (tail->next != NULL) |
587 | tail = tail->next; | |
588 | tail->next = newalt; | |
b3661567 DB |
589 | } |
590 | } | |
591 | i = posn + 1; | |
592 | } | |
bc8f2652 | 593 | |
30ae764b | 594 | cdata->got_alternates = 1; |
acc075a8 NH |
595 | } |
596 | ||
30ae764b | 597 | static void fetch_alternates(struct walker *walker, const char *base) |
acc075a8 NH |
598 | { |
599 | struct buffer buffer; | |
600 | char *url; | |
601 | char *data; | |
602 | struct active_request_slot *slot; | |
cb754fdf | 603 | struct alternates_request alt_req; |
30ae764b | 604 | struct walker_data *cdata = walker->data; |
acc075a8 NH |
605 | |
606 | /* If another request has already started fetching alternates, | |
607 | wait for them to arrive and return to processing this request's | |
608 | curl message */ | |
29508e1e | 609 | #ifdef USE_CURL_MULTI |
30ae764b | 610 | while (cdata->got_alternates == 0) { |
29508e1e | 611 | step_active_slots(); |
acc075a8 | 612 | } |
29508e1e | 613 | #endif |
acc075a8 NH |
614 | |
615 | /* Nothing to do if they've already been fetched */ | |
30ae764b | 616 | if (cdata->got_alternates == 1) |
acc075a8 NH |
617 | return; |
618 | ||
619 | /* Start the fetch */ | |
30ae764b | 620 | cdata->got_alternates = 0; |
acc075a8 NH |
621 | |
622 | data = xmalloc(4096); | |
623 | buffer.size = 4096; | |
624 | buffer.posn = 0; | |
625 | buffer.buffer = data; | |
626 | ||
30ae764b | 627 | if (walker->get_verbosely) |
acc075a8 | 628 | fprintf(stderr, "Getting alternates list for %s\n", base); |
8fcf7f9a | 629 | |
acc075a8 NH |
630 | url = xmalloc(strlen(base) + 31); |
631 | sprintf(url, "%s/objects/info/http-alternates", base); | |
632 | ||
633 | /* Use a callback to process the result, since another request | |
634 | may fail and need to have alternates loaded before continuing */ | |
635 | slot = get_active_slot(); | |
e388ab74 | 636 | slot->callback_func = process_alternates_response; |
30ae764b | 637 | alt_req.walker = walker; |
acc075a8 NH |
638 | slot->callback_data = &alt_req; |
639 | ||
640 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
29508e1e | 641 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); |
acc075a8 NH |
642 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
643 | ||
644 | alt_req.base = base; | |
645 | alt_req.url = url; | |
646 | alt_req.buffer = &buffer; | |
647 | alt_req.http_specific = 1; | |
648 | alt_req.slot = slot; | |
649 | ||
650 | if (start_active_slot(slot)) | |
651 | run_active_slot(slot); | |
652 | else | |
30ae764b | 653 | cdata->got_alternates = -1; |
acc075a8 NH |
654 | |
655 | free(data); | |
656 | free(url); | |
b3661567 DB |
657 | } |
658 | ||
30ae764b | 659 | static int fetch_indices(struct walker *walker, struct alt_base *repo) |
182005b9 DB |
660 | { |
661 | unsigned char sha1[20]; | |
662 | char *url; | |
663 | struct buffer buffer; | |
664 | char *data; | |
665 | int i = 0; | |
666 | ||
1d389ab6 | 667 | struct active_request_slot *slot; |
cb754fdf | 668 | struct slot_results results; |
1d389ab6 | 669 | |
b3661567 | 670 | if (repo->got_indices) |
182005b9 DB |
671 | return 0; |
672 | ||
673 | data = xmalloc(4096); | |
674 | buffer.size = 4096; | |
675 | buffer.posn = 0; | |
676 | buffer.buffer = data; | |
677 | ||
30ae764b | 678 | if (walker->get_verbosely) |
6fd72e39 | 679 | fprintf(stderr, "Getting pack list for %s\n", repo->base); |
8fcf7f9a | 680 | |
b3661567 DB |
681 | url = xmalloc(strlen(repo->base) + 21); |
682 | sprintf(url, "%s/objects/info/packs", repo->base); | |
182005b9 | 683 | |
1d389ab6 | 684 | slot = get_active_slot(); |
c8568e13 | 685 | slot->results = &results; |
1d389ab6 | 686 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); |
29508e1e | 687 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); |
1d389ab6 NH |
688 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
689 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
690 | if (start_active_slot(slot)) { | |
691 | run_active_slot(slot); | |
c8568e13 | 692 | if (results.curl_result != CURLE_OK) { |
be4a015b | 693 | if (missing_target(&results)) { |
5e3a7691 NH |
694 | repo->got_indices = 1; |
695 | free(buffer.buffer); | |
696 | return 0; | |
697 | } else { | |
698 | repo->got_indices = 0; | |
699 | free(buffer.buffer); | |
700 | return error("%s", curl_errorstr); | |
701 | } | |
bc8f2652 | 702 | } |
1d389ab6 | 703 | } else { |
5e3a7691 | 704 | repo->got_indices = 0; |
bc8f2652 | 705 | free(buffer.buffer); |
1d389ab6 NH |
706 | return error("Unable to start request"); |
707 | } | |
182005b9 | 708 | |
bc8f2652 | 709 | data = buffer.buffer; |
b3661567 | 710 | while (i < buffer.posn) { |
182005b9 DB |
711 | switch (data[i]) { |
712 | case 'P': | |
713 | i++; | |
455c161c | 714 | if (i + 52 <= buffer.posn && |
cc44c765 | 715 | !prefixcmp(data + i, " pack-") && |
1968d77d | 716 | !prefixcmp(data + i + 46, ".pack\n")) { |
182005b9 | 717 | get_sha1_hex(data + i + 6, sha1); |
30ae764b | 718 | setup_index(walker, repo, sha1); |
182005b9 DB |
719 | i += 51; |
720 | break; | |
721 | } | |
722 | default: | |
455c161c | 723 | while (i < buffer.posn && data[i] != '\n') |
182005b9 DB |
724 | i++; |
725 | } | |
726 | i++; | |
b3661567 | 727 | } |
182005b9 | 728 | |
bc8f2652 | 729 | free(buffer.buffer); |
b3661567 | 730 | repo->got_indices = 1; |
182005b9 DB |
731 | return 0; |
732 | } | |
733 | ||
30ae764b | 734 | static int fetch_pack(struct walker *walker, struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
735 | { |
736 | char *url; | |
737 | struct packed_git *target; | |
738 | struct packed_git **lst; | |
739 | FILE *packfile; | |
740 | char *filename; | |
49a0f240 NH |
741 | char tmpfile[PATH_MAX]; |
742 | int ret; | |
743 | long prev_posn = 0; | |
744 | char range[RANGE_HEADER_SIZE]; | |
745 | struct curl_slist *range_header = NULL; | |
30ae764b | 746 | struct walker_data *data = walker->data; |
1d389ab6 NH |
747 | |
748 | struct active_request_slot *slot; | |
cb754fdf | 749 | struct slot_results results; |
182005b9 | 750 | |
30ae764b | 751 | if (fetch_indices(walker, repo)) |
182005b9 | 752 | return -1; |
b3661567 | 753 | target = find_sha1_pack(sha1, repo->packs); |
182005b9 | 754 | if (!target) |
b3661567 | 755 | return -1; |
182005b9 | 756 | |
30ae764b | 757 | if (walker->get_verbosely) { |
182005b9 DB |
758 | fprintf(stderr, "Getting pack %s\n", |
759 | sha1_to_hex(target->sha1)); | |
760 | fprintf(stderr, " which contains %s\n", | |
761 | sha1_to_hex(sha1)); | |
762 | } | |
763 | ||
b3661567 | 764 | url = xmalloc(strlen(repo->base) + 65); |
182005b9 | 765 | sprintf(url, "%s/objects/pack/pack-%s.pack", |
b3661567 | 766 | repo->base, sha1_to_hex(target->sha1)); |
182005b9 DB |
767 | |
768 | filename = sha1_pack_name(target->sha1); | |
49a0f240 NH |
769 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
770 | packfile = fopen(tmpfile, "a"); | |
182005b9 DB |
771 | if (!packfile) |
772 | return error("Unable to open local file %s for pack", | |
773 | filename); | |
774 | ||
1d389ab6 | 775 | slot = get_active_slot(); |
c8568e13 | 776 | slot->results = &results; |
1d389ab6 NH |
777 | curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile); |
778 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
779 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
30ae764b | 780 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, data->no_pragma_header); |
1d389ab6 | 781 | slot->local = packfile; |
1ddea77e | 782 | |
49a0f240 NH |
783 | /* If there is data present from a previous transfer attempt, |
784 | resume where it left off */ | |
785 | prev_posn = ftell(packfile); | |
786 | if (prev_posn>0) { | |
30ae764b | 787 | if (walker->get_verbosely) |
49a0f240 NH |
788 | fprintf(stderr, |
789 | "Resuming fetch of pack %s at byte %ld\n", | |
790 | sha1_to_hex(target->sha1), prev_posn); | |
791 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
792 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 793 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
794 | } |
795 | ||
1d389ab6 NH |
796 | if (start_active_slot(slot)) { |
797 | run_active_slot(slot); | |
c8568e13 | 798 | if (results.curl_result != CURLE_OK) { |
1d389ab6 NH |
799 | fclose(packfile); |
800 | return error("Unable to get pack file %s\n%s", url, | |
801 | curl_errorstr); | |
802 | } | |
803 | } else { | |
313c4714 | 804 | fclose(packfile); |
1d389ab6 | 805 | return error("Unable to start request"); |
182005b9 DB |
806 | } |
807 | ||
1c23d794 | 808 | target->pack_size = ftell(packfile); |
182005b9 DB |
809 | fclose(packfile); |
810 | ||
b721e01f | 811 | ret = move_temp_to_file(tmpfile, filename); |
49a0f240 | 812 | if (ret) |
b721e01f | 813 | return ret; |
49a0f240 | 814 | |
b3661567 | 815 | lst = &repo->packs; |
182005b9 DB |
816 | while (*lst != target) |
817 | lst = &((*lst)->next); | |
818 | *lst = (*lst)->next; | |
819 | ||
271421cd JH |
820 | if (verify_pack(target, 0)) |
821 | return -1; | |
182005b9 DB |
822 | install_packed_git(target); |
823 | ||
824 | return 0; | |
825 | } | |
826 | ||
53f31389 MW |
827 | static void abort_object_request(struct object_request *obj_req) |
828 | { | |
829 | if (obj_req->local >= 0) { | |
830 | close(obj_req->local); | |
831 | obj_req->local = -1; | |
832 | } | |
833 | unlink(obj_req->tmpfile); | |
834 | if (obj_req->slot) { | |
a6080a0a | 835 | release_active_slot(obj_req->slot); |
53f31389 MW |
836 | obj_req->slot = NULL; |
837 | } | |
838 | release_object_request(obj_req); | |
839 | } | |
840 | ||
30ae764b | 841 | static int fetch_object(struct walker *walker, struct alt_base *repo, unsigned char *sha1) |
6eb7ed54 DB |
842 | { |
843 | char *hex = sha1_to_hex(sha1); | |
29508e1e | 844 | int ret = 0; |
e388ab74 | 845 | struct object_request *obj_req = object_queue_head; |
1d389ab6 | 846 | |
a89fccd2 | 847 | while (obj_req != NULL && hashcmp(obj_req->sha1, sha1)) |
e388ab74 NH |
848 | obj_req = obj_req->next; |
849 | if (obj_req == NULL) | |
1d389ab6 NH |
850 | return error("Couldn't find request for %s in the queue", hex); |
851 | ||
e388ab74 | 852 | if (has_sha1_file(obj_req->sha1)) { |
53f31389 | 853 | abort_object_request(obj_req); |
11f0dafe NH |
854 | return 0; |
855 | } | |
856 | ||
a7a8d378 | 857 | #ifdef USE_CURL_MULTI |
e388ab74 | 858 | while (obj_req->state == WAITING) { |
29508e1e | 859 | step_active_slots(); |
1d389ab6 | 860 | } |
a7a8d378 | 861 | #else |
30ae764b | 862 | start_object_request(walker, obj_req); |
a7a8d378 | 863 | #endif |
6eb7ed54 | 864 | |
e388ab74 NH |
865 | while (obj_req->state == ACTIVE) { |
866 | run_active_slot(obj_req->slot); | |
a7a8d378 | 867 | } |
e388ab74 NH |
868 | if (obj_req->local != -1) { |
869 | close(obj_req->local); obj_req->local = -1; | |
313c4714 | 870 | } |
6eb7ed54 | 871 | |
e388ab74 | 872 | if (obj_req->state == ABORTED) { |
29508e1e | 873 | ret = error("Request for %s aborted", hex); |
e388ab74 NH |
874 | } else if (obj_req->curl_result != CURLE_OK && |
875 | obj_req->http_code != 416) { | |
be4a015b | 876 | if (missing_target(obj_req)) |
e2029eb9 PB |
877 | ret = -1; /* Be silent, it is probably in a pack. */ |
878 | else | |
879 | ret = error("%s (curl_result = %d, http_code = %ld, sha1 = %s)", | |
e388ab74 NH |
880 | obj_req->errorstr, obj_req->curl_result, |
881 | obj_req->http_code, hex); | |
882 | } else if (obj_req->zret != Z_STREAM_END) { | |
30ae764b | 883 | walker->corrupt_object_found++; |
bd2afde8 | 884 | ret = error("File %s (%s) corrupt", hex, obj_req->url); |
a89fccd2 | 885 | } else if (hashcmp(obj_req->sha1, obj_req->real_sha1)) { |
bd2afde8 | 886 | ret = error("File %s has bad hash", hex); |
e388ab74 | 887 | } else if (obj_req->rename < 0) { |
7b934ec0 MW |
888 | ret = error("unable to write sha1 filename %s", |
889 | obj_req->filename); | |
6eb7ed54 | 890 | } |
49a0f240 | 891 | |
e388ab74 | 892 | release_object_request(obj_req); |
29508e1e | 893 | return ret; |
6eb7ed54 DB |
894 | } |
895 | ||
30ae764b | 896 | static int fetch(struct walker *walker, unsigned char *sha1) |
b3661567 | 897 | { |
30ae764b DB |
898 | struct walker_data *data = walker->data; |
899 | struct alt_base *altbase = data->alt; | |
1d389ab6 | 900 | |
30ae764b | 901 | if (!fetch_object(walker, altbase, sha1)) |
1d389ab6 | 902 | return 0; |
b3661567 | 903 | while (altbase) { |
30ae764b | 904 | if (!fetch_pack(walker, altbase, sha1)) |
b3661567 | 905 | return 0; |
30ae764b | 906 | fetch_alternates(walker, data->alt->base); |
b3661567 DB |
907 | altbase = altbase->next; |
908 | } | |
bd2afde8 | 909 | return error("Unable to find %s under %s", sha1_to_hex(sha1), |
30ae764b | 910 | data->alt->base); |
b3661567 DB |
911 | } |
912 | ||
94fa447a JH |
913 | static inline int needs_quote(int ch) |
914 | { | |
cfd432e6 FF |
915 | if (((ch >= 'A') && (ch <= 'Z')) |
916 | || ((ch >= 'a') && (ch <= 'z')) | |
917 | || ((ch >= '0') && (ch <= '9')) | |
918 | || (ch == '/') | |
919 | || (ch == '-') | |
920 | || (ch == '.')) | |
94fa447a | 921 | return 0; |
cfd432e6 | 922 | return 1; |
94fa447a JH |
923 | } |
924 | ||
925 | static inline int hex(int v) | |
926 | { | |
927 | if (v < 10) return '0' + v; | |
928 | else return 'A' + v - 10; | |
929 | } | |
930 | ||
931 | static char *quote_ref_url(const char *base, const char *ref) | |
932 | { | |
933 | const char *cp; | |
934 | char *dp, *qref; | |
935 | int len, baselen, ch; | |
936 | ||
937 | baselen = strlen(base); | |
2afea3bc | 938 | len = baselen + 7; /* "/refs/" + NUL */ |
94fa447a JH |
939 | for (cp = ref; (ch = *cp) != 0; cp++, len++) |
940 | if (needs_quote(ch)) | |
941 | len += 2; /* extra two hex plus replacement % */ | |
942 | qref = xmalloc(len); | |
943 | memcpy(qref, base, baselen); | |
2afea3bc GP |
944 | memcpy(qref + baselen, "/refs/", 6); |
945 | for (cp = ref, dp = qref + baselen + 6; (ch = *cp) != 0; cp++) { | |
94fa447a JH |
946 | if (needs_quote(ch)) { |
947 | *dp++ = '%'; | |
948 | *dp++ = hex((ch >> 4) & 0xF); | |
949 | *dp++ = hex(ch & 0xF); | |
950 | } | |
951 | else | |
952 | *dp++ = ch; | |
953 | } | |
954 | *dp = 0; | |
955 | ||
956 | return qref; | |
957 | } | |
958 | ||
30ae764b | 959 | static int fetch_ref(struct walker *walker, char *ref, unsigned char *sha1) |
cd541a68 | 960 | { |
94fa447a | 961 | char *url; |
fa3e0655 DB |
962 | char hex[42]; |
963 | struct buffer buffer; | |
30ae764b DB |
964 | struct walker_data *data = walker->data; |
965 | const char *base = data->alt->base; | |
1d389ab6 | 966 | struct active_request_slot *slot; |
cb754fdf | 967 | struct slot_results results; |
fa3e0655 DB |
968 | buffer.size = 41; |
969 | buffer.posn = 0; | |
970 | buffer.buffer = hex; | |
971 | hex[41] = '\0'; | |
8fcf7f9a | 972 | |
94fa447a | 973 | url = quote_ref_url(base, ref); |
1d389ab6 | 974 | slot = get_active_slot(); |
c8568e13 | 975 | slot->results = &results; |
1d389ab6 NH |
976 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); |
977 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
978 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
979 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
980 | if (start_active_slot(slot)) { | |
981 | run_active_slot(slot); | |
c8568e13 | 982 | if (results.curl_result != CURLE_OK) |
1d389ab6 NH |
983 | return error("Couldn't get %s for %s\n%s", |
984 | url, ref, curl_errorstr); | |
985 | } else { | |
986 | return error("Unable to start request"); | |
987 | } | |
fa3e0655 DB |
988 | |
989 | hex[40] = '\0'; | |
990 | get_sha1_hex(hex, sha1); | |
991 | return 0; | |
cd541a68 DB |
992 | } |
993 | ||
30ae764b DB |
994 | static void cleanup(struct walker *walker) |
995 | { | |
996 | struct walker_data *data = walker->data; | |
997 | http_cleanup(); | |
998 | ||
999 | curl_slist_free_all(data->no_pragma_header); | |
1000 | } | |
1001 | ||
1002 | struct walker *get_http_walker(const char *url) | |
6eb7ed54 | 1003 | { |
9c880b3e | 1004 | char *s; |
30ae764b DB |
1005 | struct walker_data *data = xmalloc(sizeof(struct walker_data)); |
1006 | struct walker *walker = xmalloc(sizeof(struct walker)); | |
6eb7ed54 | 1007 | |
29508e1e | 1008 | http_init(); |
d402d556 | 1009 | |
30ae764b | 1010 | data->no_pragma_header = curl_slist_append(NULL, "Pragma:"); |
3dcb90f5 | 1011 | |
30ae764b DB |
1012 | data->alt = xmalloc(sizeof(*data->alt)); |
1013 | data->alt->base = xmalloc(strlen(url) + 1); | |
1014 | strcpy(data->alt->base, url); | |
1015 | for (s = data->alt->base + strlen(data->alt->base) - 1; *s == '/'; --s) | |
9c880b3e | 1016 | *s = 0; |
6eb7ed54 | 1017 | |
30ae764b DB |
1018 | data->alt->got_indices = 0; |
1019 | data->alt->packs = NULL; | |
1020 | data->alt->next = NULL; | |
1021 | data->got_alternates = -1; | |
fc57b6aa | 1022 | |
30ae764b DB |
1023 | walker->corrupt_object_found = 0; |
1024 | walker->fetch = fetch; | |
1025 | walker->fetch_ref = fetch_ref; | |
1026 | walker->prefetch = prefetch; | |
1027 | walker->cleanup = cleanup; | |
1028 | walker->data = data; | |
6eb7ed54 | 1029 | |
30ae764b DB |
1030 | #ifdef USE_CURL_MULTI |
1031 | add_fill_function(walker, (int (*)(void *)) fill_active_slot); | |
1032 | #endif | |
8e29f6a0 | 1033 | |
30ae764b | 1034 | return walker; |
6eb7ed54 | 1035 | } |