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Commit | Line | Data |
---|---|---|
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 | 7 | #define PREV_BUF_SIZE 4096 |
49a0f240 | 8 | |
b3661567 DB |
9 | struct alt_base |
10 | { | |
2afea3bc | 11 | char *base; |
b3661567 DB |
12 | int got_indices; |
13 | struct packed_git *packs; | |
14 | struct alt_base *next; | |
15 | }; | |
16 | ||
e388ab74 | 17 | enum object_request_state { |
1d389ab6 NH |
18 | WAITING, |
19 | ABORTED, | |
20 | ACTIVE, | |
21 | COMPLETE, | |
22 | }; | |
6eb7ed54 | 23 | |
e388ab74 | 24 | struct object_request |
1d389ab6 | 25 | { |
30ae764b | 26 | struct walker *walker; |
1d389ab6 NH |
27 | unsigned char sha1[20]; |
28 | struct alt_base *repo; | |
29 | char *url; | |
30 | char filename[PATH_MAX]; | |
31 | char tmpfile[PATH_MAX]; | |
32 | int local; | |
e388ab74 | 33 | enum object_request_state state; |
1d389ab6 NH |
34 | CURLcode curl_result; |
35 | char errorstr[CURL_ERROR_SIZE]; | |
36 | long http_code; | |
37 | unsigned char real_sha1[20]; | |
9126f009 | 38 | git_SHA_CTX c; |
1d389ab6 NH |
39 | z_stream stream; |
40 | int zret; | |
41 | int rename; | |
42 | struct active_request_slot *slot; | |
e388ab74 | 43 | struct object_request *next; |
1d389ab6 NH |
44 | }; |
45 | ||
e388ab74 | 46 | struct alternates_request { |
30ae764b | 47 | struct walker *walker; |
8e29f6a0 | 48 | const char *base; |
acc075a8 | 49 | char *url; |
028c2976 | 50 | struct strbuf *buffer; |
acc075a8 NH |
51 | struct active_request_slot *slot; |
52 | int http_specific; | |
53 | }; | |
54 | ||
30ae764b DB |
55 | struct walker_data { |
56 | const char *url; | |
57 | int got_alternates; | |
58 | struct alt_base *alt; | |
30ae764b DB |
59 | }; |
60 | ||
96f1e58f | 61 | static struct object_request *object_queue_head; |
bc8f2652 | 62 | |
182005b9 DB |
63 | static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb, |
64 | void *data) | |
65 | { | |
bf0f910d | 66 | unsigned char expn[4096]; |
6eb7ed54 DB |
67 | size_t size = eltsize * nmemb; |
68 | int posn = 0; | |
e388ab74 | 69 | struct object_request *obj_req = (struct object_request *)data; |
6eb7ed54 | 70 | do { |
93822c22 | 71 | ssize_t retval = xwrite(obj_req->local, |
4c42aa1a | 72 | (char *) ptr + posn, size - posn); |
6eb7ed54 DB |
73 | if (retval < 0) |
74 | return posn; | |
75 | posn += retval; | |
76 | } while (posn < size); | |
77 | ||
e388ab74 NH |
78 | obj_req->stream.avail_in = size; |
79 | obj_req->stream.next_in = ptr; | |
6eb7ed54 | 80 | do { |
e388ab74 NH |
81 | obj_req->stream.next_out = expn; |
82 | obj_req->stream.avail_out = sizeof(expn); | |
39c68542 | 83 | obj_req->zret = git_inflate(&obj_req->stream, Z_SYNC_FLUSH); |
9126f009 | 84 | git_SHA1_Update(&obj_req->c, expn, |
4c42aa1a | 85 | sizeof(expn) - obj_req->stream.avail_out); |
e388ab74 | 86 | } while (obj_req->stream.avail_in && obj_req->zret == Z_OK); |
1d389ab6 | 87 | data_received++; |
6eb7ed54 DB |
88 | return size; |
89 | } | |
90 | ||
30ae764b | 91 | static void fetch_alternates(struct walker *walker, const char *base); |
1d389ab6 | 92 | |
29508e1e | 93 | static void process_object_response(void *callback_data); |
1d389ab6 | 94 | |
30ae764b DB |
95 | static void start_object_request(struct walker *walker, |
96 | struct object_request *obj_req) | |
1d389ab6 | 97 | { |
e388ab74 | 98 | char *hex = sha1_to_hex(obj_req->sha1); |
1d389ab6 NH |
99 | char prevfile[PATH_MAX]; |
100 | char *url; | |
101 | char *posn; | |
102 | int prevlocal; | |
103 | unsigned char prev_buf[PREV_BUF_SIZE]; | |
104 | ssize_t prev_read = 0; | |
105 | long prev_posn = 0; | |
106 | char range[RANGE_HEADER_SIZE]; | |
107 | struct curl_slist *range_header = NULL; | |
108 | struct active_request_slot *slot; | |
109 | ||
e388ab74 | 110 | snprintf(prevfile, sizeof(prevfile), "%s.prev", obj_req->filename); |
691f1a28 | 111 | unlink_or_warn(prevfile); |
e388ab74 | 112 | rename(obj_req->tmpfile, prevfile); |
691f1a28 | 113 | unlink_or_warn(obj_req->tmpfile); |
1d389ab6 | 114 | |
e388ab74 NH |
115 | if (obj_req->local != -1) |
116 | error("fd leakage in start: %d", obj_req->local); | |
117 | obj_req->local = open(obj_req->tmpfile, | |
1d389ab6 | 118 | O_WRONLY | O_CREAT | O_EXCL, 0666); |
4c42aa1a TRC |
119 | /* |
120 | * This could have failed due to the "lazy directory creation"; | |
b721e01f JH |
121 | * try to mkdir the last path component. |
122 | */ | |
e388ab74 NH |
123 | if (obj_req->local < 0 && errno == ENOENT) { |
124 | char *dir = strrchr(obj_req->tmpfile, '/'); | |
b721e01f JH |
125 | if (dir) { |
126 | *dir = 0; | |
e388ab74 | 127 | mkdir(obj_req->tmpfile, 0777); |
b721e01f JH |
128 | *dir = '/'; |
129 | } | |
e388ab74 | 130 | obj_req->local = open(obj_req->tmpfile, |
b721e01f JH |
131 | O_WRONLY | O_CREAT | O_EXCL, 0666); |
132 | } | |
133 | ||
e388ab74 NH |
134 | if (obj_req->local < 0) { |
135 | obj_req->state = ABORTED; | |
bd2afde8 | 136 | error("Couldn't create temporary file %s for %s: %s", |
e388ab74 | 137 | obj_req->tmpfile, obj_req->filename, strerror(errno)); |
1d389ab6 NH |
138 | return; |
139 | } | |
140 | ||
e388ab74 | 141 | memset(&obj_req->stream, 0, sizeof(obj_req->stream)); |
1d389ab6 | 142 | |
39c68542 | 143 | git_inflate_init(&obj_req->stream); |
1d389ab6 | 144 | |
9126f009 | 145 | git_SHA1_Init(&obj_req->c); |
1d389ab6 | 146 | |
2afea3bc GP |
147 | url = xmalloc(strlen(obj_req->repo->base) + 51); |
148 | obj_req->url = xmalloc(strlen(obj_req->repo->base) + 51); | |
e388ab74 NH |
149 | strcpy(url, obj_req->repo->base); |
150 | posn = url + strlen(obj_req->repo->base); | |
2afea3bc GP |
151 | strcpy(posn, "/objects/"); |
152 | posn += 9; | |
1d389ab6 NH |
153 | memcpy(posn, hex, 2); |
154 | posn += 2; | |
155 | *(posn++) = '/'; | |
156 | strcpy(posn, hex + 2); | |
e388ab74 | 157 | strcpy(obj_req->url, url); |
1d389ab6 | 158 | |
4c42aa1a TRC |
159 | /* |
160 | * If a previous temp file is present, process what was already | |
161 | * fetched. | |
162 | */ | |
1d389ab6 NH |
163 | prevlocal = open(prevfile, O_RDONLY); |
164 | if (prevlocal != -1) { | |
165 | do { | |
93d26e4c | 166 | prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE); |
1d389ab6 NH |
167 | if (prev_read>0) { |
168 | if (fwrite_sha1_file(prev_buf, | |
169 | 1, | |
170 | prev_read, | |
4c42aa1a | 171 | obj_req) == prev_read) |
1d389ab6 | 172 | prev_posn += prev_read; |
4c42aa1a | 173 | else |
1d389ab6 | 174 | prev_read = -1; |
1d389ab6 NH |
175 | } |
176 | } while (prev_read > 0); | |
177 | close(prevlocal); | |
178 | } | |
691f1a28 | 179 | unlink_or_warn(prevfile); |
1d389ab6 | 180 | |
4c42aa1a TRC |
181 | /* |
182 | * Reset inflate/SHA1 if there was an error reading the previous temp | |
183 | * file; also rewind to the beginning of the local file. | |
184 | */ | |
1d389ab6 | 185 | if (prev_read == -1) { |
e388ab74 | 186 | memset(&obj_req->stream, 0, sizeof(obj_req->stream)); |
39c68542 | 187 | git_inflate_init(&obj_req->stream); |
9126f009 | 188 | git_SHA1_Init(&obj_req->c); |
1d389ab6 NH |
189 | if (prev_posn>0) { |
190 | prev_posn = 0; | |
b5da2467 | 191 | lseek(obj_req->local, 0, SEEK_SET); |
e388ab74 | 192 | ftruncate(obj_req->local, 0); |
1d389ab6 NH |
193 | } |
194 | } | |
195 | ||
196 | slot = get_active_slot(); | |
29508e1e | 197 | slot->callback_func = process_object_response; |
e388ab74 NH |
198 | slot->callback_data = obj_req; |
199 | obj_req->slot = slot; | |
29508e1e | 200 | |
e388ab74 | 201 | curl_easy_setopt(slot->curl, CURLOPT_FILE, obj_req); |
1d389ab6 | 202 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); |
e388ab74 | 203 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, obj_req->errorstr); |
1d389ab6 | 204 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
e9176745 | 205 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 | 206 | |
4c42aa1a TRC |
207 | /* |
208 | * If we have successfully processed data from a previous fetch | |
209 | * attempt, only fetch the data we don't already have. | |
210 | */ | |
1d389ab6 | 211 | if (prev_posn>0) { |
30ae764b | 212 | if (walker->get_verbosely) |
1d389ab6 NH |
213 | fprintf(stderr, |
214 | "Resuming fetch of object %s at byte %ld\n", | |
215 | hex, prev_posn); | |
216 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
217 | range_header = curl_slist_append(range_header, range); | |
218 | curl_easy_setopt(slot->curl, | |
219 | CURLOPT_HTTPHEADER, range_header); | |
220 | } | |
221 | ||
a7a8d378 | 222 | /* Try to get the request started, abort the request on error */ |
e388ab74 | 223 | obj_req->state = ACTIVE; |
1d389ab6 | 224 | if (!start_active_slot(slot)) { |
e388ab74 NH |
225 | obj_req->state = ABORTED; |
226 | obj_req->slot = NULL; | |
4c42aa1a TRC |
227 | close(obj_req->local); |
228 | obj_req->local = -1; | |
e388ab74 NH |
229 | free(obj_req->url); |
230 | return; | |
1d389ab6 | 231 | } |
1d389ab6 NH |
232 | } |
233 | ||
e388ab74 | 234 | static void finish_object_request(struct object_request *obj_req) |
1d389ab6 | 235 | { |
50496b21 NH |
236 | struct stat st; |
237 | ||
4c42aa1a TRC |
238 | close(obj_req->local); |
239 | obj_req->local = -1; | |
1d389ab6 | 240 | |
e388ab74 | 241 | if (obj_req->http_code == 416) { |
1d389ab6 | 242 | fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n"); |
e388ab74 NH |
243 | } else if (obj_req->curl_result != CURLE_OK) { |
244 | if (stat(obj_req->tmpfile, &st) == 0) | |
50496b21 | 245 | if (st.st_size == 0) |
691f1a28 | 246 | unlink_or_warn(obj_req->tmpfile); |
1d389ab6 NH |
247 | return; |
248 | } | |
249 | ||
39c68542 | 250 | git_inflate_end(&obj_req->stream); |
9126f009 | 251 | git_SHA1_Final(obj_req->real_sha1, &obj_req->c); |
e388ab74 | 252 | if (obj_req->zret != Z_STREAM_END) { |
691f1a28 | 253 | unlink_or_warn(obj_req->tmpfile); |
1d389ab6 NH |
254 | return; |
255 | } | |
a89fccd2 | 256 | if (hashcmp(obj_req->sha1, obj_req->real_sha1)) { |
691f1a28 | 257 | unlink_or_warn(obj_req->tmpfile); |
1d389ab6 NH |
258 | return; |
259 | } | |
e388ab74 NH |
260 | obj_req->rename = |
261 | move_temp_to_file(obj_req->tmpfile, obj_req->filename); | |
1d389ab6 | 262 | |
e388ab74 | 263 | if (obj_req->rename == 0) |
30ae764b | 264 | walker_say(obj_req->walker, "got %s\n", sha1_to_hex(obj_req->sha1)); |
1d389ab6 NH |
265 | } |
266 | ||
29508e1e NH |
267 | static void process_object_response(void *callback_data) |
268 | { | |
e388ab74 NH |
269 | struct object_request *obj_req = |
270 | (struct object_request *)callback_data; | |
30ae764b DB |
271 | struct walker *walker = obj_req->walker; |
272 | struct walker_data *data = walker->data; | |
273 | struct alt_base *alt = data->alt; | |
29508e1e | 274 | |
e388ab74 NH |
275 | obj_req->curl_result = obj_req->slot->curl_result; |
276 | obj_req->http_code = obj_req->slot->http_code; | |
277 | obj_req->slot = NULL; | |
278 | obj_req->state = COMPLETE; | |
29508e1e NH |
279 | |
280 | /* Use alternates if necessary */ | |
be4a015b | 281 | if (missing_target(obj_req)) { |
30ae764b | 282 | fetch_alternates(walker, alt->base); |
e388ab74 NH |
283 | if (obj_req->repo->next != NULL) { |
284 | obj_req->repo = | |
285 | obj_req->repo->next; | |
286 | close(obj_req->local); | |
287 | obj_req->local = -1; | |
30ae764b | 288 | start_object_request(walker, obj_req); |
29508e1e NH |
289 | return; |
290 | } | |
291 | } | |
292 | ||
e388ab74 | 293 | finish_object_request(obj_req); |
29508e1e NH |
294 | } |
295 | ||
e388ab74 | 296 | static void release_object_request(struct object_request *obj_req) |
1d389ab6 | 297 | { |
e388ab74 | 298 | struct object_request *entry = object_queue_head; |
1d389ab6 | 299 | |
e388ab74 NH |
300 | if (obj_req->local != -1) |
301 | error("fd leakage in release: %d", obj_req->local); | |
302 | if (obj_req == object_queue_head) { | |
303 | object_queue_head = obj_req->next; | |
1d389ab6 | 304 | } else { |
e388ab74 | 305 | while (entry->next != NULL && entry->next != obj_req) |
1d389ab6 | 306 | entry = entry->next; |
e388ab74 | 307 | if (entry->next == obj_req) |
1d389ab6 NH |
308 | entry->next = entry->next->next; |
309 | } | |
310 | ||
e388ab74 NH |
311 | free(obj_req->url); |
312 | free(obj_req); | |
1d389ab6 NH |
313 | } |
314 | ||
a7a8d378 | 315 | #ifdef USE_CURL_MULTI |
30ae764b | 316 | static int fill_active_slot(struct walker *walker) |
1d389ab6 | 317 | { |
45c17412 | 318 | struct object_request *obj_req; |
1d389ab6 | 319 | |
45c17412 | 320 | for (obj_req = object_queue_head; obj_req; obj_req = obj_req->next) { |
e388ab74 NH |
321 | if (obj_req->state == WAITING) { |
322 | if (has_sha1_file(obj_req->sha1)) | |
09db444f | 323 | obj_req->state = COMPLETE; |
45c17412 | 324 | else { |
30ae764b | 325 | start_object_request(walker, obj_req); |
45c17412 DB |
326 | return 1; |
327 | } | |
f1a906a3 | 328 | } |
8fcf7f9a | 329 | } |
45c17412 | 330 | return 0; |
1d389ab6 | 331 | } |
a7a8d378 | 332 | #endif |
1d389ab6 | 333 | |
30ae764b | 334 | static void prefetch(struct walker *walker, unsigned char *sha1) |
1d389ab6 | 335 | { |
e388ab74 NH |
336 | struct object_request *newreq; |
337 | struct object_request *tail; | |
30ae764b | 338 | struct walker_data *data = walker->data; |
1d389ab6 NH |
339 | char *filename = sha1_file_name(sha1); |
340 | ||
341 | newreq = xmalloc(sizeof(*newreq)); | |
30ae764b | 342 | newreq->walker = walker; |
e702496e | 343 | hashcpy(newreq->sha1, sha1); |
30ae764b | 344 | newreq->repo = data->alt; |
1d389ab6 NH |
345 | newreq->url = NULL; |
346 | newreq->local = -1; | |
347 | newreq->state = WAITING; | |
348 | snprintf(newreq->filename, sizeof(newreq->filename), "%s", filename); | |
349 | snprintf(newreq->tmpfile, sizeof(newreq->tmpfile), | |
350 | "%s.temp", filename); | |
e8dff6ba | 351 | newreq->slot = NULL; |
1d389ab6 NH |
352 | newreq->next = NULL; |
353 | ||
e9176745 TRC |
354 | http_is_verbose = walker->get_verbosely; |
355 | ||
e388ab74 NH |
356 | if (object_queue_head == NULL) { |
357 | object_queue_head = newreq; | |
1d389ab6 | 358 | } else { |
e388ab74 | 359 | tail = object_queue_head; |
4c42aa1a | 360 | while (tail->next != NULL) |
1d389ab6 | 361 | tail = tail->next; |
1d389ab6 NH |
362 | tail->next = newreq; |
363 | } | |
29508e1e | 364 | |
a7a8d378 | 365 | #ifdef USE_CURL_MULTI |
29508e1e NH |
366 | fill_active_slots(); |
367 | step_active_slots(); | |
a7a8d378 | 368 | #endif |
1d389ab6 NH |
369 | } |
370 | ||
30ae764b | 371 | static int fetch_index(struct walker *walker, struct alt_base *repo, unsigned char *sha1) |
182005b9 | 372 | { |
20cfb3aa TRC |
373 | int ret = 0; |
374 | char *hex = xstrdup(sha1_to_hex(sha1)); | |
182005b9 DB |
375 | char *filename; |
376 | char *url; | |
49a0f240 | 377 | char tmpfile[PATH_MAX]; |
49a0f240 NH |
378 | long prev_posn = 0; |
379 | char range[RANGE_HEADER_SIZE]; | |
380 | struct curl_slist *range_header = NULL; | |
182005b9 DB |
381 | |
382 | FILE *indexfile; | |
1d389ab6 | 383 | struct active_request_slot *slot; |
cb754fdf | 384 | struct slot_results results; |
182005b9 | 385 | |
48188c25 TRC |
386 | /* Don't use the index if the pack isn't there */ |
387 | url = xmalloc(strlen(repo->base) + 64); | |
388 | sprintf(url, "%s/objects/pack/pack-%s.pack", repo->base, hex); | |
389 | slot = get_active_slot(); | |
390 | slot->results = &results; | |
391 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
392 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1); | |
393 | if (start_active_slot(slot)) { | |
394 | run_active_slot(slot); | |
395 | if (results.curl_result != CURLE_OK) { | |
20cfb3aa | 396 | ret = error("Unable to verify pack %s is available", |
48188c25 | 397 | hex); |
20cfb3aa | 398 | goto cleanup_pack; |
48188c25 TRC |
399 | } |
400 | } else { | |
20cfb3aa TRC |
401 | ret = error("Unable to start request"); |
402 | goto cleanup_pack; | |
48188c25 TRC |
403 | } |
404 | ||
405 | if (has_pack_index(sha1)) { | |
20cfb3aa TRC |
406 | ret = 0; |
407 | goto cleanup_pack; | |
48188c25 | 408 | } |
182005b9 | 409 | |
30ae764b | 410 | if (walker->get_verbosely) |
1d389ab6 | 411 | fprintf(stderr, "Getting index for pack %s\n", hex); |
8fcf7f9a | 412 | |
1d389ab6 | 413 | sprintf(url, "%s/objects/pack/pack-%s.idx", repo->base, hex); |
8fcf7f9a | 414 | |
182005b9 | 415 | filename = sha1_pack_index_name(sha1); |
49a0f240 NH |
416 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
417 | indexfile = fopen(tmpfile, "a"); | |
48188c25 | 418 | if (!indexfile) { |
20cfb3aa TRC |
419 | ret = error("Unable to open local file %s for pack index", |
420 | tmpfile); | |
421 | goto cleanup_pack; | |
48188c25 | 422 | } |
182005b9 | 423 | |
1d389ab6 | 424 | slot = get_active_slot(); |
c8568e13 | 425 | slot->results = &results; |
48188c25 TRC |
426 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0); |
427 | curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); | |
1d389ab6 NH |
428 | curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile); |
429 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
430 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
e9176745 | 431 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 NH |
432 | slot->local = indexfile; |
433 | ||
4c42aa1a TRC |
434 | /* |
435 | * If there is data present from a previous transfer attempt, | |
436 | * resume where it left off | |
437 | */ | |
49a0f240 NH |
438 | prev_posn = ftell(indexfile); |
439 | if (prev_posn>0) { | |
30ae764b | 440 | if (walker->get_verbosely) |
49a0f240 NH |
441 | fprintf(stderr, |
442 | "Resuming fetch of index for pack %s at byte %ld\n", | |
1d389ab6 | 443 | hex, prev_posn); |
49a0f240 NH |
444 | sprintf(range, "Range: bytes=%ld-", prev_posn); |
445 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 446 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
447 | } |
448 | ||
1d389ab6 NH |
449 | if (start_active_slot(slot)) { |
450 | run_active_slot(slot); | |
c8568e13 | 451 | if (results.curl_result != CURLE_OK) { |
20cfb3aa TRC |
452 | ret = error("Unable to get pack index %s\n%s", url, |
453 | curl_errorstr); | |
454 | goto cleanup_index; | |
1d389ab6 NH |
455 | } |
456 | } else { | |
20cfb3aa TRC |
457 | ret = error("Unable to start request"); |
458 | goto cleanup_index; | |
182005b9 DB |
459 | } |
460 | ||
20cfb3aa TRC |
461 | ret = move_temp_to_file(tmpfile, filename); |
462 | ||
463 | cleanup_index: | |
182005b9 | 464 | fclose(indexfile); |
16493eb0 | 465 | slot->local = NULL; |
20cfb3aa TRC |
466 | cleanup_pack: |
467 | free(url); | |
468 | free(hex); | |
469 | return ret; | |
182005b9 DB |
470 | } |
471 | ||
30ae764b | 472 | static int setup_index(struct walker *walker, struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
473 | { |
474 | struct packed_git *new_pack; | |
475 | if (has_pack_file(sha1)) | |
a9486b02 | 476 | return 0; /* don't list this as something we can get */ |
182005b9 | 477 | |
30ae764b | 478 | if (fetch_index(walker, repo, sha1)) |
182005b9 DB |
479 | return -1; |
480 | ||
481 | new_pack = parse_pack_index(sha1); | |
a70c232e JH |
482 | if (!new_pack) |
483 | return -1; /* parse_pack_index() already issued error message */ | |
b3661567 DB |
484 | new_pack->next = repo->packs; |
485 | repo->packs = new_pack; | |
182005b9 DB |
486 | return 0; |
487 | } | |
488 | ||
e388ab74 | 489 | static void process_alternates_response(void *callback_data) |
b3661567 | 490 | { |
e388ab74 NH |
491 | struct alternates_request *alt_req = |
492 | (struct alternates_request *)callback_data; | |
30ae764b DB |
493 | struct walker *walker = alt_req->walker; |
494 | struct walker_data *cdata = walker->data; | |
acc075a8 | 495 | struct active_request_slot *slot = alt_req->slot; |
30ae764b | 496 | struct alt_base *tail = cdata->alt; |
8e29f6a0 | 497 | const char *base = alt_req->base; |
bc8f2652 | 498 | static const char null_byte = '\0'; |
acc075a8 NH |
499 | char *data; |
500 | int i = 0; | |
1d389ab6 | 501 | |
acc075a8 NH |
502 | if (alt_req->http_specific) { |
503 | if (slot->curl_result != CURLE_OK || | |
028c2976 | 504 | !alt_req->buffer->len) { |
acc075a8 NH |
505 | |
506 | /* Try reusing the slot to get non-http alternates */ | |
507 | alt_req->http_specific = 0; | |
508 | sprintf(alt_req->url, "%s/objects/info/alternates", | |
509 | base); | |
510 | curl_easy_setopt(slot->curl, CURLOPT_URL, | |
511 | alt_req->url); | |
512 | active_requests++; | |
513 | slot->in_use = 1; | |
c9826473 NH |
514 | if (slot->finished != NULL) |
515 | (*slot->finished) = 0; | |
a3f583cb | 516 | if (!start_active_slot(slot)) { |
30ae764b | 517 | cdata->got_alternates = -1; |
29508e1e | 518 | slot->in_use = 0; |
c9826473 NH |
519 | if (slot->finished != NULL) |
520 | (*slot->finished) = 1; | |
1d389ab6 | 521 | } |
a3f583cb | 522 | return; |
b3661567 | 523 | } |
acc075a8 | 524 | } else if (slot->curl_result != CURLE_OK) { |
be4a015b | 525 | if (!missing_target(slot)) { |
30ae764b | 526 | cdata->got_alternates = -1; |
acc075a8 NH |
527 | return; |
528 | } | |
b3661567 DB |
529 | } |
530 | ||
29508e1e | 531 | fwrite_buffer(&null_byte, 1, 1, alt_req->buffer); |
028c2976 MH |
532 | alt_req->buffer->len--; |
533 | data = alt_req->buffer->buf; | |
1b0c1e67 | 534 | |
028c2976 | 535 | while (i < alt_req->buffer->len) { |
b3661567 | 536 | int posn = i; |
028c2976 | 537 | while (posn < alt_req->buffer->len && data[posn] != '\n') |
b3661567 DB |
538 | posn++; |
539 | if (data[posn] == '\n') { | |
1b0c1e67 DB |
540 | int okay = 0; |
541 | int serverlen = 0; | |
542 | struct alt_base *newalt; | |
543 | char *target = NULL; | |
b3661567 | 544 | if (data[i] == '/') { |
4c42aa1a TRC |
545 | /* |
546 | * This counts | |
5df1e0d0 JH |
547 | * http://git.host/pub/scm/linux.git/ |
548 | * -----------here^ | |
549 | * so memcpy(dst, base, serverlen) will | |
550 | * copy up to "...git.host". | |
551 | */ | |
552 | const char *colon_ss = strstr(base,"://"); | |
553 | if (colon_ss) { | |
554 | serverlen = (strchr(colon_ss + 3, '/') | |
555 | - base); | |
556 | okay = 1; | |
557 | } | |
1b0c1e67 | 558 | } else if (!memcmp(data + i, "../", 3)) { |
4c42aa1a TRC |
559 | /* |
560 | * Relative URL; chop the corresponding | |
5df1e0d0 JH |
561 | * number of subpath from base (and ../ |
562 | * from data), and concatenate the result. | |
563 | * | |
564 | * The code first drops ../ from data, and | |
565 | * then drops one ../ from data and one path | |
566 | * from base. IOW, one extra ../ is dropped | |
567 | * from data than path is dropped from base. | |
568 | * | |
569 | * This is not wrong. The alternate in | |
570 | * http://git.host/pub/scm/linux.git/ | |
571 | * to borrow from | |
572 | * http://git.host/pub/scm/linus.git/ | |
573 | * is ../../linus.git/objects/. You need | |
574 | * two ../../ to borrow from your direct | |
575 | * neighbour. | |
576 | */ | |
1b0c1e67 DB |
577 | i += 3; |
578 | serverlen = strlen(base); | |
8fcf7f9a | 579 | while (i + 2 < posn && |
1b0c1e67 DB |
580 | !memcmp(data + i, "../", 3)) { |
581 | do { | |
582 | serverlen--; | |
583 | } while (serverlen && | |
584 | base[serverlen - 1] != '/'); | |
585 | i += 3; | |
586 | } | |
a9486b02 | 587 | /* If the server got removed, give up. */ |
8fcf7f9a | 588 | okay = strchr(base, ':') - base + 3 < |
4c42aa1a | 589 | serverlen; |
acc075a8 | 590 | } else if (alt_req->http_specific) { |
1b0c1e67 DB |
591 | char *colon = strchr(data + i, ':'); |
592 | char *slash = strchr(data + i, '/'); | |
593 | if (colon && slash && colon < data + posn && | |
594 | slash < data + posn && colon < slash) { | |
595 | okay = 1; | |
596 | } | |
597 | } | |
5df1e0d0 | 598 | /* skip "objects\n" at end */ |
1b0c1e67 DB |
599 | if (okay) { |
600 | target = xmalloc(serverlen + posn - i - 6); | |
5df1e0d0 JH |
601 | memcpy(target, base, serverlen); |
602 | memcpy(target + serverlen, data + i, | |
603 | posn - i - 7); | |
604 | target[serverlen + posn - i - 7] = 0; | |
30ae764b | 605 | if (walker->get_verbosely) |
8fcf7f9a | 606 | fprintf(stderr, |
b3661567 DB |
607 | "Also look at %s\n", target); |
608 | newalt = xmalloc(sizeof(*newalt)); | |
1d389ab6 | 609 | newalt->next = NULL; |
b3661567 DB |
610 | newalt->base = target; |
611 | newalt->got_indices = 0; | |
612 | newalt->packs = NULL; | |
8d9fbe57 | 613 | |
1d389ab6 NH |
614 | while (tail->next != NULL) |
615 | tail = tail->next; | |
616 | tail->next = newalt; | |
b3661567 DB |
617 | } |
618 | } | |
619 | i = posn + 1; | |
620 | } | |
bc8f2652 | 621 | |
30ae764b | 622 | cdata->got_alternates = 1; |
acc075a8 NH |
623 | } |
624 | ||
30ae764b | 625 | static void fetch_alternates(struct walker *walker, const char *base) |
acc075a8 | 626 | { |
028c2976 | 627 | struct strbuf buffer = STRBUF_INIT; |
acc075a8 | 628 | char *url; |
acc075a8 | 629 | struct active_request_slot *slot; |
cb754fdf | 630 | struct alternates_request alt_req; |
30ae764b | 631 | struct walker_data *cdata = walker->data; |
acc075a8 | 632 | |
4c42aa1a TRC |
633 | /* |
634 | * If another request has already started fetching alternates, | |
635 | * wait for them to arrive and return to processing this request's | |
636 | * curl message | |
637 | */ | |
29508e1e | 638 | #ifdef USE_CURL_MULTI |
30ae764b | 639 | while (cdata->got_alternates == 0) { |
29508e1e | 640 | step_active_slots(); |
acc075a8 | 641 | } |
29508e1e | 642 | #endif |
acc075a8 NH |
643 | |
644 | /* Nothing to do if they've already been fetched */ | |
30ae764b | 645 | if (cdata->got_alternates == 1) |
acc075a8 NH |
646 | return; |
647 | ||
648 | /* Start the fetch */ | |
30ae764b | 649 | cdata->got_alternates = 0; |
acc075a8 | 650 | |
30ae764b | 651 | if (walker->get_verbosely) |
acc075a8 | 652 | fprintf(stderr, "Getting alternates list for %s\n", base); |
8fcf7f9a | 653 | |
acc075a8 NH |
654 | url = xmalloc(strlen(base) + 31); |
655 | sprintf(url, "%s/objects/info/http-alternates", base); | |
656 | ||
4c42aa1a TRC |
657 | /* |
658 | * Use a callback to process the result, since another request | |
659 | * may fail and need to have alternates loaded before continuing | |
660 | */ | |
acc075a8 | 661 | slot = get_active_slot(); |
e388ab74 | 662 | slot->callback_func = process_alternates_response; |
30ae764b | 663 | alt_req.walker = walker; |
acc075a8 NH |
664 | slot->callback_data = &alt_req; |
665 | ||
666 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
29508e1e | 667 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); |
acc075a8 NH |
668 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
669 | ||
670 | alt_req.base = base; | |
671 | alt_req.url = url; | |
672 | alt_req.buffer = &buffer; | |
673 | alt_req.http_specific = 1; | |
674 | alt_req.slot = slot; | |
675 | ||
676 | if (start_active_slot(slot)) | |
677 | run_active_slot(slot); | |
678 | else | |
30ae764b | 679 | cdata->got_alternates = -1; |
acc075a8 | 680 | |
028c2976 | 681 | strbuf_release(&buffer); |
acc075a8 | 682 | free(url); |
b3661567 DB |
683 | } |
684 | ||
30ae764b | 685 | static int fetch_indices(struct walker *walker, struct alt_base *repo) |
182005b9 DB |
686 | { |
687 | unsigned char sha1[20]; | |
688 | char *url; | |
028c2976 | 689 | struct strbuf buffer = STRBUF_INIT; |
182005b9 DB |
690 | char *data; |
691 | int i = 0; | |
3a462bc9 | 692 | int ret = 0; |
182005b9 | 693 | |
1d389ab6 | 694 | struct active_request_slot *slot; |
cb754fdf | 695 | struct slot_results results; |
1d389ab6 | 696 | |
b3661567 | 697 | if (repo->got_indices) |
182005b9 DB |
698 | return 0; |
699 | ||
30ae764b | 700 | if (walker->get_verbosely) |
6fd72e39 | 701 | fprintf(stderr, "Getting pack list for %s\n", repo->base); |
8fcf7f9a | 702 | |
b3661567 DB |
703 | url = xmalloc(strlen(repo->base) + 21); |
704 | sprintf(url, "%s/objects/info/packs", repo->base); | |
182005b9 | 705 | |
1d389ab6 | 706 | slot = get_active_slot(); |
c8568e13 | 707 | slot->results = &results; |
1d389ab6 | 708 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); |
29508e1e | 709 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); |
1d389ab6 NH |
710 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
711 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
712 | if (start_active_slot(slot)) { | |
713 | run_active_slot(slot); | |
c8568e13 | 714 | if (results.curl_result != CURLE_OK) { |
be4a015b | 715 | if (missing_target(&results)) { |
5e3a7691 | 716 | repo->got_indices = 1; |
3a462bc9 | 717 | goto cleanup; |
5e3a7691 NH |
718 | } else { |
719 | repo->got_indices = 0; | |
3a462bc9 MH |
720 | ret = error("%s", curl_errorstr); |
721 | goto cleanup; | |
5e3a7691 | 722 | } |
bc8f2652 | 723 | } |
1d389ab6 | 724 | } else { |
5e3a7691 | 725 | repo->got_indices = 0; |
3a462bc9 MH |
726 | ret = error("Unable to start request"); |
727 | goto cleanup; | |
1d389ab6 | 728 | } |
182005b9 | 729 | |
028c2976 MH |
730 | data = buffer.buf; |
731 | while (i < buffer.len) { | |
182005b9 DB |
732 | switch (data[i]) { |
733 | case 'P': | |
734 | i++; | |
028c2976 | 735 | if (i + 52 <= buffer.len && |
cc44c765 | 736 | !prefixcmp(data + i, " pack-") && |
1968d77d | 737 | !prefixcmp(data + i + 46, ".pack\n")) { |
182005b9 | 738 | get_sha1_hex(data + i + 6, sha1); |
30ae764b | 739 | setup_index(walker, repo, sha1); |
182005b9 DB |
740 | i += 51; |
741 | break; | |
742 | } | |
743 | default: | |
028c2976 | 744 | while (i < buffer.len && data[i] != '\n') |
182005b9 DB |
745 | i++; |
746 | } | |
747 | i++; | |
b3661567 | 748 | } |
182005b9 | 749 | |
b3661567 | 750 | repo->got_indices = 1; |
3a462bc9 MH |
751 | cleanup: |
752 | strbuf_release(&buffer); | |
753 | free(url); | |
754 | return ret; | |
182005b9 DB |
755 | } |
756 | ||
30ae764b | 757 | static int fetch_pack(struct walker *walker, struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
758 | { |
759 | char *url; | |
760 | struct packed_git *target; | |
761 | struct packed_git **lst; | |
762 | FILE *packfile; | |
763 | char *filename; | |
49a0f240 NH |
764 | char tmpfile[PATH_MAX]; |
765 | int ret; | |
766 | long prev_posn = 0; | |
767 | char range[RANGE_HEADER_SIZE]; | |
768 | struct curl_slist *range_header = NULL; | |
1d389ab6 NH |
769 | |
770 | struct active_request_slot *slot; | |
cb754fdf | 771 | struct slot_results results; |
182005b9 | 772 | |
30ae764b | 773 | if (fetch_indices(walker, repo)) |
182005b9 | 774 | return -1; |
b3661567 | 775 | target = find_sha1_pack(sha1, repo->packs); |
182005b9 | 776 | if (!target) |
b3661567 | 777 | return -1; |
182005b9 | 778 | |
30ae764b | 779 | if (walker->get_verbosely) { |
182005b9 DB |
780 | fprintf(stderr, "Getting pack %s\n", |
781 | sha1_to_hex(target->sha1)); | |
782 | fprintf(stderr, " which contains %s\n", | |
783 | sha1_to_hex(sha1)); | |
784 | } | |
785 | ||
b3661567 | 786 | url = xmalloc(strlen(repo->base) + 65); |
182005b9 | 787 | sprintf(url, "%s/objects/pack/pack-%s.pack", |
b3661567 | 788 | repo->base, sha1_to_hex(target->sha1)); |
182005b9 DB |
789 | |
790 | filename = sha1_pack_name(target->sha1); | |
49a0f240 NH |
791 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
792 | packfile = fopen(tmpfile, "a"); | |
182005b9 DB |
793 | if (!packfile) |
794 | return error("Unable to open local file %s for pack", | |
84ef0338 | 795 | tmpfile); |
182005b9 | 796 | |
1d389ab6 | 797 | slot = get_active_slot(); |
c8568e13 | 798 | slot->results = &results; |
1d389ab6 NH |
799 | curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile); |
800 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
801 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
e9176745 | 802 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 | 803 | slot->local = packfile; |
1ddea77e | 804 | |
4c42aa1a TRC |
805 | /* |
806 | * If there is data present from a previous transfer attempt, | |
807 | * resume where it left off | |
808 | */ | |
49a0f240 NH |
809 | prev_posn = ftell(packfile); |
810 | if (prev_posn>0) { | |
30ae764b | 811 | if (walker->get_verbosely) |
49a0f240 NH |
812 | fprintf(stderr, |
813 | "Resuming fetch of pack %s at byte %ld\n", | |
814 | sha1_to_hex(target->sha1), prev_posn); | |
815 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
816 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 817 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
818 | } |
819 | ||
1d389ab6 NH |
820 | if (start_active_slot(slot)) { |
821 | run_active_slot(slot); | |
c8568e13 | 822 | if (results.curl_result != CURLE_OK) { |
1d389ab6 | 823 | fclose(packfile); |
16493eb0 | 824 | slot->local = NULL; |
1d389ab6 NH |
825 | return error("Unable to get pack file %s\n%s", url, |
826 | curl_errorstr); | |
827 | } | |
828 | } else { | |
313c4714 | 829 | fclose(packfile); |
16493eb0 | 830 | slot->local = NULL; |
1d389ab6 | 831 | return error("Unable to start request"); |
182005b9 DB |
832 | } |
833 | ||
1c23d794 | 834 | target->pack_size = ftell(packfile); |
182005b9 | 835 | fclose(packfile); |
16493eb0 | 836 | slot->local = NULL; |
182005b9 | 837 | |
b721e01f | 838 | ret = move_temp_to_file(tmpfile, filename); |
49a0f240 | 839 | if (ret) |
b721e01f | 840 | return ret; |
49a0f240 | 841 | |
b3661567 | 842 | lst = &repo->packs; |
182005b9 DB |
843 | while (*lst != target) |
844 | lst = &((*lst)->next); | |
845 | *lst = (*lst)->next; | |
846 | ||
77d3ecee | 847 | if (verify_pack(target)) |
271421cd | 848 | return -1; |
182005b9 DB |
849 | install_packed_git(target); |
850 | ||
851 | return 0; | |
852 | } | |
853 | ||
53f31389 MW |
854 | static void abort_object_request(struct object_request *obj_req) |
855 | { | |
856 | if (obj_req->local >= 0) { | |
857 | close(obj_req->local); | |
858 | obj_req->local = -1; | |
859 | } | |
691f1a28 | 860 | unlink_or_warn(obj_req->tmpfile); |
53f31389 | 861 | if (obj_req->slot) { |
a6080a0a | 862 | release_active_slot(obj_req->slot); |
53f31389 MW |
863 | obj_req->slot = NULL; |
864 | } | |
865 | release_object_request(obj_req); | |
866 | } | |
867 | ||
30ae764b | 868 | static int fetch_object(struct walker *walker, struct alt_base *repo, unsigned char *sha1) |
6eb7ed54 DB |
869 | { |
870 | char *hex = sha1_to_hex(sha1); | |
29508e1e | 871 | int ret = 0; |
e388ab74 | 872 | struct object_request *obj_req = object_queue_head; |
1d389ab6 | 873 | |
a89fccd2 | 874 | while (obj_req != NULL && hashcmp(obj_req->sha1, sha1)) |
e388ab74 NH |
875 | obj_req = obj_req->next; |
876 | if (obj_req == NULL) | |
1d389ab6 NH |
877 | return error("Couldn't find request for %s in the queue", hex); |
878 | ||
e388ab74 | 879 | if (has_sha1_file(obj_req->sha1)) { |
53f31389 | 880 | abort_object_request(obj_req); |
11f0dafe NH |
881 | return 0; |
882 | } | |
883 | ||
a7a8d378 | 884 | #ifdef USE_CURL_MULTI |
4c42aa1a | 885 | while (obj_req->state == WAITING) |
29508e1e | 886 | step_active_slots(); |
a7a8d378 | 887 | #else |
30ae764b | 888 | start_object_request(walker, obj_req); |
a7a8d378 | 889 | #endif |
6eb7ed54 | 890 | |
4c42aa1a | 891 | while (obj_req->state == ACTIVE) |
e388ab74 | 892 | run_active_slot(obj_req->slot); |
4c42aa1a | 893 | |
e388ab74 | 894 | if (obj_req->local != -1) { |
4c42aa1a TRC |
895 | close(obj_req->local); |
896 | obj_req->local = -1; | |
313c4714 | 897 | } |
6eb7ed54 | 898 | |
e388ab74 | 899 | if (obj_req->state == ABORTED) { |
29508e1e | 900 | ret = error("Request for %s aborted", hex); |
e388ab74 NH |
901 | } else if (obj_req->curl_result != CURLE_OK && |
902 | obj_req->http_code != 416) { | |
be4a015b | 903 | if (missing_target(obj_req)) |
e2029eb9 PB |
904 | ret = -1; /* Be silent, it is probably in a pack. */ |
905 | else | |
906 | ret = error("%s (curl_result = %d, http_code = %ld, sha1 = %s)", | |
e388ab74 NH |
907 | obj_req->errorstr, obj_req->curl_result, |
908 | obj_req->http_code, hex); | |
909 | } else if (obj_req->zret != Z_STREAM_END) { | |
30ae764b | 910 | walker->corrupt_object_found++; |
bd2afde8 | 911 | ret = error("File %s (%s) corrupt", hex, obj_req->url); |
a89fccd2 | 912 | } else if (hashcmp(obj_req->sha1, obj_req->real_sha1)) { |
bd2afde8 | 913 | ret = error("File %s has bad hash", hex); |
e388ab74 | 914 | } else if (obj_req->rename < 0) { |
7b934ec0 MW |
915 | ret = error("unable to write sha1 filename %s", |
916 | obj_req->filename); | |
6eb7ed54 | 917 | } |
49a0f240 | 918 | |
e388ab74 | 919 | release_object_request(obj_req); |
29508e1e | 920 | return ret; |
6eb7ed54 DB |
921 | } |
922 | ||
30ae764b | 923 | static int fetch(struct walker *walker, unsigned char *sha1) |
b3661567 | 924 | { |
30ae764b DB |
925 | struct walker_data *data = walker->data; |
926 | struct alt_base *altbase = data->alt; | |
1d389ab6 | 927 | |
30ae764b | 928 | if (!fetch_object(walker, altbase, sha1)) |
1d389ab6 | 929 | return 0; |
b3661567 | 930 | while (altbase) { |
30ae764b | 931 | if (!fetch_pack(walker, altbase, sha1)) |
b3661567 | 932 | return 0; |
30ae764b | 933 | fetch_alternates(walker, data->alt->base); |
b3661567 DB |
934 | altbase = altbase->next; |
935 | } | |
bd2afde8 | 936 | return error("Unable to find %s under %s", sha1_to_hex(sha1), |
30ae764b | 937 | data->alt->base); |
b3661567 DB |
938 | } |
939 | ||
c13b2633 | 940 | static int fetch_ref(struct walker *walker, struct ref *ref) |
cd541a68 | 941 | { |
30ae764b | 942 | struct walker_data *data = walker->data; |
c13b2633 | 943 | return http_fetch_ref(data->alt->base, ref); |
cd541a68 DB |
944 | } |
945 | ||
30ae764b DB |
946 | static void cleanup(struct walker *walker) |
947 | { | |
30ae764b | 948 | http_cleanup(); |
30ae764b DB |
949 | } |
950 | ||
9fc6440d | 951 | struct walker *get_http_walker(const char *url, struct remote *remote) |
6eb7ed54 | 952 | { |
9c880b3e | 953 | char *s; |
30ae764b DB |
954 | struct walker_data *data = xmalloc(sizeof(struct walker_data)); |
955 | struct walker *walker = xmalloc(sizeof(struct walker)); | |
6eb7ed54 | 956 | |
9fc6440d | 957 | http_init(remote); |
d402d556 | 958 | |
30ae764b DB |
959 | data->alt = xmalloc(sizeof(*data->alt)); |
960 | data->alt->base = xmalloc(strlen(url) + 1); | |
961 | strcpy(data->alt->base, url); | |
962 | for (s = data->alt->base + strlen(data->alt->base) - 1; *s == '/'; --s) | |
9c880b3e | 963 | *s = 0; |
6eb7ed54 | 964 | |
30ae764b DB |
965 | data->alt->got_indices = 0; |
966 | data->alt->packs = NULL; | |
967 | data->alt->next = NULL; | |
968 | data->got_alternates = -1; | |
fc57b6aa | 969 | |
30ae764b DB |
970 | walker->corrupt_object_found = 0; |
971 | walker->fetch = fetch; | |
972 | walker->fetch_ref = fetch_ref; | |
973 | walker->prefetch = prefetch; | |
974 | walker->cleanup = cleanup; | |
975 | walker->data = data; | |
6eb7ed54 | 976 | |
30ae764b DB |
977 | #ifdef USE_CURL_MULTI |
978 | add_fill_function(walker, (int (*)(void *)) fill_active_slot); | |
979 | #endif | |
8e29f6a0 | 980 | |
30ae764b | 981 | return walker; |
6eb7ed54 | 982 | } |