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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" |
29508e1e | 5 | #include "http.h" |
7baa3e86 | 6 | |
8d9fbe57 NH |
7 | #ifndef NO_EXPAT |
8 | #include <expat.h> | |
9 | ||
10 | /* Definitions for DAV requests */ | |
11 | #define DAV_PROPFIND "PROPFIND" | |
12 | #define DAV_PROPFIND_RESP ".multistatus.response" | |
13 | #define DAV_PROPFIND_NAME ".multistatus.response.href" | |
14 | #define DAV_PROPFIND_COLLECTION ".multistatus.response.propstat.prop.resourcetype.collection" | |
15 | #define PROPFIND_ALL_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:allprop/>\n</D:propfind>" | |
16 | ||
17 | /* Definitions for processing XML DAV responses */ | |
18 | #ifndef XML_STATUS_OK | |
19 | enum XML_Status { | |
20 | XML_STATUS_OK = 1, | |
21 | XML_STATUS_ERROR = 0 | |
22 | }; | |
23 | #define XML_STATUS_OK 1 | |
24 | #define XML_STATUS_ERROR 0 | |
25 | #endif | |
26 | ||
27 | /* Flags that control remote_ls processing */ | |
28 | #define PROCESS_FILES (1u << 0) | |
29 | #define PROCESS_DIRS (1u << 1) | |
30 | #define RECURSIVE (1u << 2) | |
31 | ||
32 | /* Flags that remote_ls passes to callback functions */ | |
33 | #define IS_DIR (1u << 0) | |
34 | #endif | |
35 | ||
49a0f240 NH |
36 | #define PREV_BUF_SIZE 4096 |
37 | #define RANGE_HEADER_SIZE 30 | |
38 | ||
acc075a8 | 39 | static int got_alternates = -1; |
bb528079 | 40 | static int corrupt_object_found = 0; |
1d389ab6 | 41 | |
1db69b57 | 42 | static struct curl_slist *no_pragma_header; |
6eb7ed54 | 43 | |
b3661567 DB |
44 | struct alt_base |
45 | { | |
46 | char *base; | |
8d9fbe57 | 47 | int path_len; |
b3661567 DB |
48 | int got_indices; |
49 | struct packed_git *packs; | |
50 | struct alt_base *next; | |
51 | }; | |
52 | ||
a7928f8e | 53 | static struct alt_base *alt = NULL; |
6eb7ed54 | 54 | |
e388ab74 | 55 | enum object_request_state { |
1d389ab6 NH |
56 | WAITING, |
57 | ABORTED, | |
58 | ACTIVE, | |
59 | COMPLETE, | |
60 | }; | |
6eb7ed54 | 61 | |
e388ab74 | 62 | struct object_request |
1d389ab6 NH |
63 | { |
64 | unsigned char sha1[20]; | |
65 | struct alt_base *repo; | |
66 | char *url; | |
67 | char filename[PATH_MAX]; | |
68 | char tmpfile[PATH_MAX]; | |
69 | int local; | |
e388ab74 | 70 | enum object_request_state state; |
1d389ab6 NH |
71 | CURLcode curl_result; |
72 | char errorstr[CURL_ERROR_SIZE]; | |
73 | long http_code; | |
74 | unsigned char real_sha1[20]; | |
75 | SHA_CTX c; | |
76 | z_stream stream; | |
77 | int zret; | |
78 | int rename; | |
79 | struct active_request_slot *slot; | |
e388ab74 | 80 | struct object_request *next; |
1d389ab6 NH |
81 | }; |
82 | ||
e388ab74 | 83 | struct alternates_request { |
acc075a8 NH |
84 | char *base; |
85 | char *url; | |
86 | struct buffer *buffer; | |
87 | struct active_request_slot *slot; | |
88 | int http_specific; | |
89 | }; | |
90 | ||
8d9fbe57 NH |
91 | #ifndef NO_EXPAT |
92 | struct xml_ctx | |
93 | { | |
94 | char *name; | |
95 | int len; | |
96 | char *cdata; | |
97 | void (*userFunc)(struct xml_ctx *ctx, int tag_closed); | |
98 | void *userData; | |
99 | }; | |
100 | ||
101 | struct remote_ls_ctx | |
102 | { | |
103 | struct alt_base *repo; | |
104 | char *path; | |
105 | void (*userFunc)(struct remote_ls_ctx *ls); | |
106 | void *userData; | |
107 | int flags; | |
108 | char *dentry_name; | |
109 | int dentry_flags; | |
110 | int rc; | |
111 | struct remote_ls_ctx *parent; | |
112 | }; | |
113 | #endif | |
114 | ||
e388ab74 | 115 | static struct object_request *object_queue_head = NULL; |
bc8f2652 | 116 | |
182005b9 DB |
117 | static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb, |
118 | void *data) | |
119 | { | |
bf0f910d | 120 | unsigned char expn[4096]; |
6eb7ed54 DB |
121 | size_t size = eltsize * nmemb; |
122 | int posn = 0; | |
e388ab74 | 123 | struct object_request *obj_req = (struct object_request *)data; |
6eb7ed54 | 124 | do { |
e388ab74 | 125 | ssize_t retval = write(obj_req->local, |
1d389ab6 | 126 | ptr + posn, size - posn); |
6eb7ed54 DB |
127 | if (retval < 0) |
128 | return posn; | |
129 | posn += retval; | |
130 | } while (posn < size); | |
131 | ||
e388ab74 NH |
132 | obj_req->stream.avail_in = size; |
133 | obj_req->stream.next_in = ptr; | |
6eb7ed54 | 134 | do { |
e388ab74 NH |
135 | obj_req->stream.next_out = expn; |
136 | obj_req->stream.avail_out = sizeof(expn); | |
137 | obj_req->zret = inflate(&obj_req->stream, Z_SYNC_FLUSH); | |
138 | SHA1_Update(&obj_req->c, expn, | |
139 | sizeof(expn) - obj_req->stream.avail_out); | |
140 | } while (obj_req->stream.avail_in && obj_req->zret == Z_OK); | |
1d389ab6 | 141 | data_received++; |
6eb7ed54 DB |
142 | return size; |
143 | } | |
144 | ||
acc075a8 | 145 | static void fetch_alternates(char *base); |
1d389ab6 | 146 | |
29508e1e | 147 | static void process_object_response(void *callback_data); |
1d389ab6 | 148 | |
e388ab74 | 149 | static void start_object_request(struct object_request *obj_req) |
1d389ab6 | 150 | { |
e388ab74 | 151 | char *hex = sha1_to_hex(obj_req->sha1); |
1d389ab6 NH |
152 | char prevfile[PATH_MAX]; |
153 | char *url; | |
154 | char *posn; | |
155 | int prevlocal; | |
156 | unsigned char prev_buf[PREV_BUF_SIZE]; | |
157 | ssize_t prev_read = 0; | |
158 | long prev_posn = 0; | |
159 | char range[RANGE_HEADER_SIZE]; | |
160 | struct curl_slist *range_header = NULL; | |
161 | struct active_request_slot *slot; | |
162 | ||
e388ab74 | 163 | snprintf(prevfile, sizeof(prevfile), "%s.prev", obj_req->filename); |
1d389ab6 | 164 | unlink(prevfile); |
e388ab74 NH |
165 | rename(obj_req->tmpfile, prevfile); |
166 | unlink(obj_req->tmpfile); | |
1d389ab6 | 167 | |
e388ab74 NH |
168 | if (obj_req->local != -1) |
169 | error("fd leakage in start: %d", obj_req->local); | |
170 | obj_req->local = open(obj_req->tmpfile, | |
1d389ab6 | 171 | O_WRONLY | O_CREAT | O_EXCL, 0666); |
b721e01f JH |
172 | /* This could have failed due to the "lazy directory creation"; |
173 | * try to mkdir the last path component. | |
174 | */ | |
e388ab74 NH |
175 | if (obj_req->local < 0 && errno == ENOENT) { |
176 | char *dir = strrchr(obj_req->tmpfile, '/'); | |
b721e01f JH |
177 | if (dir) { |
178 | *dir = 0; | |
e388ab74 | 179 | mkdir(obj_req->tmpfile, 0777); |
b721e01f JH |
180 | *dir = '/'; |
181 | } | |
e388ab74 | 182 | obj_req->local = open(obj_req->tmpfile, |
b721e01f JH |
183 | O_WRONLY | O_CREAT | O_EXCL, 0666); |
184 | } | |
185 | ||
e388ab74 NH |
186 | if (obj_req->local < 0) { |
187 | obj_req->state = ABORTED; | |
bd2afde8 | 188 | error("Couldn't create temporary file %s for %s: %s", |
e388ab74 | 189 | obj_req->tmpfile, obj_req->filename, strerror(errno)); |
1d389ab6 NH |
190 | return; |
191 | } | |
192 | ||
e388ab74 | 193 | memset(&obj_req->stream, 0, sizeof(obj_req->stream)); |
1d389ab6 | 194 | |
e388ab74 | 195 | inflateInit(&obj_req->stream); |
1d389ab6 | 196 | |
e388ab74 | 197 | SHA1_Init(&obj_req->c); |
1d389ab6 | 198 | |
e388ab74 NH |
199 | url = xmalloc(strlen(obj_req->repo->base) + 50); |
200 | obj_req->url = xmalloc(strlen(obj_req->repo->base) + 50); | |
201 | strcpy(url, obj_req->repo->base); | |
202 | posn = url + strlen(obj_req->repo->base); | |
1d389ab6 NH |
203 | strcpy(posn, "objects/"); |
204 | posn += 8; | |
205 | memcpy(posn, hex, 2); | |
206 | posn += 2; | |
207 | *(posn++) = '/'; | |
208 | strcpy(posn, hex + 2); | |
e388ab74 | 209 | strcpy(obj_req->url, url); |
1d389ab6 NH |
210 | |
211 | /* If a previous temp file is present, process what was already | |
212 | fetched. */ | |
213 | prevlocal = open(prevfile, O_RDONLY); | |
214 | if (prevlocal != -1) { | |
215 | do { | |
216 | prev_read = read(prevlocal, prev_buf, PREV_BUF_SIZE); | |
217 | if (prev_read>0) { | |
218 | if (fwrite_sha1_file(prev_buf, | |
219 | 1, | |
220 | prev_read, | |
e388ab74 | 221 | obj_req) == prev_read) { |
1d389ab6 NH |
222 | prev_posn += prev_read; |
223 | } else { | |
224 | prev_read = -1; | |
225 | } | |
226 | } | |
227 | } while (prev_read > 0); | |
228 | close(prevlocal); | |
229 | } | |
230 | unlink(prevfile); | |
231 | ||
232 | /* Reset inflate/SHA1 if there was an error reading the previous temp | |
233 | file; also rewind to the beginning of the local file. */ | |
234 | if (prev_read == -1) { | |
e388ab74 NH |
235 | memset(&obj_req->stream, 0, sizeof(obj_req->stream)); |
236 | inflateInit(&obj_req->stream); | |
237 | SHA1_Init(&obj_req->c); | |
1d389ab6 NH |
238 | if (prev_posn>0) { |
239 | prev_posn = 0; | |
e388ab74 NH |
240 | lseek(obj_req->local, SEEK_SET, 0); |
241 | ftruncate(obj_req->local, 0); | |
1d389ab6 NH |
242 | } |
243 | } | |
244 | ||
245 | slot = get_active_slot(); | |
29508e1e | 246 | slot->callback_func = process_object_response; |
e388ab74 NH |
247 | slot->callback_data = obj_req; |
248 | obj_req->slot = slot; | |
29508e1e | 249 | |
e388ab74 | 250 | curl_easy_setopt(slot->curl, CURLOPT_FILE, obj_req); |
1d389ab6 | 251 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); |
e388ab74 | 252 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, obj_req->errorstr); |
1d389ab6 | 253 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
03126006 | 254 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 NH |
255 | |
256 | /* If we have successfully processed data from a previous fetch | |
257 | attempt, only fetch the data we don't already have. */ | |
258 | if (prev_posn>0) { | |
259 | if (get_verbosely) | |
260 | fprintf(stderr, | |
261 | "Resuming fetch of object %s at byte %ld\n", | |
262 | hex, prev_posn); | |
263 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
264 | range_header = curl_slist_append(range_header, range); | |
265 | curl_easy_setopt(slot->curl, | |
266 | CURLOPT_HTTPHEADER, range_header); | |
267 | } | |
268 | ||
a7a8d378 | 269 | /* Try to get the request started, abort the request on error */ |
e388ab74 | 270 | obj_req->state = ACTIVE; |
1d389ab6 | 271 | if (!start_active_slot(slot)) { |
e388ab74 NH |
272 | obj_req->state = ABORTED; |
273 | obj_req->slot = NULL; | |
274 | close(obj_req->local); obj_req->local = -1; | |
275 | free(obj_req->url); | |
276 | return; | |
1d389ab6 | 277 | } |
1d389ab6 NH |
278 | } |
279 | ||
e388ab74 | 280 | static void finish_object_request(struct object_request *obj_req) |
1d389ab6 | 281 | { |
50496b21 NH |
282 | struct stat st; |
283 | ||
e388ab74 NH |
284 | fchmod(obj_req->local, 0444); |
285 | close(obj_req->local); obj_req->local = -1; | |
1d389ab6 | 286 | |
e388ab74 | 287 | if (obj_req->http_code == 416) { |
1d389ab6 | 288 | fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n"); |
e388ab74 NH |
289 | } else if (obj_req->curl_result != CURLE_OK) { |
290 | if (stat(obj_req->tmpfile, &st) == 0) | |
50496b21 | 291 | if (st.st_size == 0) |
e388ab74 | 292 | unlink(obj_req->tmpfile); |
1d389ab6 NH |
293 | return; |
294 | } | |
295 | ||
e388ab74 NH |
296 | inflateEnd(&obj_req->stream); |
297 | SHA1_Final(obj_req->real_sha1, &obj_req->c); | |
298 | if (obj_req->zret != Z_STREAM_END) { | |
299 | unlink(obj_req->tmpfile); | |
1d389ab6 NH |
300 | return; |
301 | } | |
e388ab74 NH |
302 | if (memcmp(obj_req->sha1, obj_req->real_sha1, 20)) { |
303 | unlink(obj_req->tmpfile); | |
1d389ab6 NH |
304 | return; |
305 | } | |
e388ab74 NH |
306 | obj_req->rename = |
307 | move_temp_to_file(obj_req->tmpfile, obj_req->filename); | |
1d389ab6 | 308 | |
e388ab74 NH |
309 | if (obj_req->rename == 0) |
310 | pull_say("got %s\n", sha1_to_hex(obj_req->sha1)); | |
1d389ab6 NH |
311 | } |
312 | ||
29508e1e NH |
313 | static void process_object_response(void *callback_data) |
314 | { | |
e388ab74 NH |
315 | struct object_request *obj_req = |
316 | (struct object_request *)callback_data; | |
29508e1e | 317 | |
e388ab74 NH |
318 | obj_req->curl_result = obj_req->slot->curl_result; |
319 | obj_req->http_code = obj_req->slot->http_code; | |
320 | obj_req->slot = NULL; | |
321 | obj_req->state = COMPLETE; | |
29508e1e NH |
322 | |
323 | /* Use alternates if necessary */ | |
a14c2256 NH |
324 | if (obj_req->http_code == 404 || |
325 | obj_req->curl_result == CURLE_FILE_COULDNT_READ_FILE) { | |
29508e1e | 326 | fetch_alternates(alt->base); |
e388ab74 NH |
327 | if (obj_req->repo->next != NULL) { |
328 | obj_req->repo = | |
329 | obj_req->repo->next; | |
330 | close(obj_req->local); | |
331 | obj_req->local = -1; | |
332 | start_object_request(obj_req); | |
29508e1e NH |
333 | return; |
334 | } | |
335 | } | |
336 | ||
e388ab74 | 337 | finish_object_request(obj_req); |
29508e1e NH |
338 | } |
339 | ||
e388ab74 | 340 | static void release_object_request(struct object_request *obj_req) |
1d389ab6 | 341 | { |
e388ab74 | 342 | struct object_request *entry = object_queue_head; |
1d389ab6 | 343 | |
e388ab74 NH |
344 | if (obj_req->local != -1) |
345 | error("fd leakage in release: %d", obj_req->local); | |
346 | if (obj_req == object_queue_head) { | |
347 | object_queue_head = obj_req->next; | |
1d389ab6 | 348 | } else { |
e388ab74 | 349 | while (entry->next != NULL && entry->next != obj_req) |
1d389ab6 | 350 | entry = entry->next; |
e388ab74 | 351 | if (entry->next == obj_req) |
1d389ab6 NH |
352 | entry->next = entry->next->next; |
353 | } | |
354 | ||
e388ab74 NH |
355 | free(obj_req->url); |
356 | free(obj_req); | |
1d389ab6 NH |
357 | } |
358 | ||
a7a8d378 | 359 | #ifdef USE_CURL_MULTI |
29508e1e | 360 | void fill_active_slots(void) |
1d389ab6 | 361 | { |
e388ab74 | 362 | struct object_request *obj_req = object_queue_head; |
f1a906a3 | 363 | struct active_request_slot *slot = active_queue_head; |
1d389ab6 NH |
364 | int num_transfers; |
365 | ||
e388ab74 NH |
366 | while (active_requests < max_requests && obj_req != NULL) { |
367 | if (obj_req->state == WAITING) { | |
368 | if (has_sha1_file(obj_req->sha1)) | |
09db444f | 369 | obj_req->state = COMPLETE; |
11f0dafe | 370 | else |
e388ab74 | 371 | start_object_request(obj_req); |
1d389ab6 NH |
372 | curl_multi_perform(curlm, &num_transfers); |
373 | } | |
e388ab74 | 374 | obj_req = obj_req->next; |
1d389ab6 | 375 | } |
f1a906a3 NH |
376 | |
377 | while (slot != NULL) { | |
378 | if (!slot->in_use && slot->curl != NULL) { | |
379 | curl_easy_cleanup(slot->curl); | |
380 | slot->curl = NULL; | |
381 | } | |
382 | slot = slot->next; | |
8fcf7f9a | 383 | } |
1d389ab6 | 384 | } |
a7a8d378 | 385 | #endif |
1d389ab6 NH |
386 | |
387 | void prefetch(unsigned char *sha1) | |
388 | { | |
e388ab74 NH |
389 | struct object_request *newreq; |
390 | struct object_request *tail; | |
1d389ab6 NH |
391 | char *filename = sha1_file_name(sha1); |
392 | ||
393 | newreq = xmalloc(sizeof(*newreq)); | |
394 | memcpy(newreq->sha1, sha1, 20); | |
395 | newreq->repo = alt; | |
396 | newreq->url = NULL; | |
397 | newreq->local = -1; | |
398 | newreq->state = WAITING; | |
399 | snprintf(newreq->filename, sizeof(newreq->filename), "%s", filename); | |
400 | snprintf(newreq->tmpfile, sizeof(newreq->tmpfile), | |
401 | "%s.temp", filename); | |
402 | newreq->next = NULL; | |
403 | ||
e388ab74 NH |
404 | if (object_queue_head == NULL) { |
405 | object_queue_head = newreq; | |
1d389ab6 | 406 | } else { |
e388ab74 | 407 | tail = object_queue_head; |
1d389ab6 NH |
408 | while (tail->next != NULL) { |
409 | tail = tail->next; | |
410 | } | |
411 | tail->next = newreq; | |
412 | } | |
29508e1e | 413 | |
a7a8d378 | 414 | #ifdef USE_CURL_MULTI |
29508e1e NH |
415 | fill_active_slots(); |
416 | step_active_slots(); | |
a7a8d378 | 417 | #endif |
1d389ab6 NH |
418 | } |
419 | ||
b3661567 | 420 | static int fetch_index(struct alt_base *repo, unsigned char *sha1) |
182005b9 | 421 | { |
1d389ab6 | 422 | char *hex = sha1_to_hex(sha1); |
182005b9 DB |
423 | char *filename; |
424 | char *url; | |
49a0f240 | 425 | char tmpfile[PATH_MAX]; |
49a0f240 NH |
426 | long prev_posn = 0; |
427 | char range[RANGE_HEADER_SIZE]; | |
428 | struct curl_slist *range_header = NULL; | |
182005b9 DB |
429 | |
430 | FILE *indexfile; | |
1d389ab6 | 431 | struct active_request_slot *slot; |
cb754fdf | 432 | struct slot_results results; |
182005b9 DB |
433 | |
434 | if (has_pack_index(sha1)) | |
435 | return 0; | |
436 | ||
437 | if (get_verbosely) | |
1d389ab6 | 438 | fprintf(stderr, "Getting index for pack %s\n", hex); |
8fcf7f9a | 439 | |
b3661567 | 440 | url = xmalloc(strlen(repo->base) + 64); |
1d389ab6 | 441 | sprintf(url, "%s/objects/pack/pack-%s.idx", repo->base, hex); |
8fcf7f9a | 442 | |
182005b9 | 443 | filename = sha1_pack_index_name(sha1); |
49a0f240 NH |
444 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
445 | indexfile = fopen(tmpfile, "a"); | |
182005b9 DB |
446 | if (!indexfile) |
447 | return error("Unable to open local file %s for pack index", | |
448 | filename); | |
449 | ||
1d389ab6 | 450 | slot = get_active_slot(); |
c8568e13 | 451 | slot->results = &results; |
1d389ab6 NH |
452 | curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile); |
453 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
454 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 455 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 NH |
456 | slot->local = indexfile; |
457 | ||
49a0f240 NH |
458 | /* If there is data present from a previous transfer attempt, |
459 | resume where it left off */ | |
460 | prev_posn = ftell(indexfile); | |
461 | if (prev_posn>0) { | |
462 | if (get_verbosely) | |
463 | fprintf(stderr, | |
464 | "Resuming fetch of index for pack %s at byte %ld\n", | |
1d389ab6 | 465 | hex, prev_posn); |
49a0f240 NH |
466 | sprintf(range, "Range: bytes=%ld-", prev_posn); |
467 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 468 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
469 | } |
470 | ||
1d389ab6 NH |
471 | if (start_active_slot(slot)) { |
472 | run_active_slot(slot); | |
c8568e13 | 473 | if (results.curl_result != CURLE_OK) { |
1d389ab6 NH |
474 | fclose(indexfile); |
475 | return error("Unable to get pack index %s\n%s", url, | |
476 | curl_errorstr); | |
477 | } | |
478 | } else { | |
313c4714 | 479 | fclose(indexfile); |
1d389ab6 | 480 | return error("Unable to start request"); |
182005b9 DB |
481 | } |
482 | ||
483 | fclose(indexfile); | |
49a0f240 | 484 | |
b721e01f | 485 | return move_temp_to_file(tmpfile, filename); |
182005b9 DB |
486 | } |
487 | ||
b3661567 | 488 | static int setup_index(struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
489 | { |
490 | struct packed_git *new_pack; | |
491 | if (has_pack_file(sha1)) | |
492 | return 0; // don't list this as something we can get | |
493 | ||
b3661567 | 494 | if (fetch_index(repo, sha1)) |
182005b9 DB |
495 | return -1; |
496 | ||
497 | new_pack = parse_pack_index(sha1); | |
b3661567 DB |
498 | new_pack->next = repo->packs; |
499 | repo->packs = new_pack; | |
182005b9 DB |
500 | return 0; |
501 | } | |
502 | ||
e388ab74 | 503 | static void process_alternates_response(void *callback_data) |
b3661567 | 504 | { |
e388ab74 NH |
505 | struct alternates_request *alt_req = |
506 | (struct alternates_request *)callback_data; | |
acc075a8 | 507 | struct active_request_slot *slot = alt_req->slot; |
1d389ab6 | 508 | struct alt_base *tail = alt; |
acc075a8 | 509 | char *base = alt_req->base; |
bc8f2652 | 510 | static const char null_byte = '\0'; |
acc075a8 NH |
511 | char *data; |
512 | int i = 0; | |
1d389ab6 | 513 | |
acc075a8 NH |
514 | if (alt_req->http_specific) { |
515 | if (slot->curl_result != CURLE_OK || | |
516 | !alt_req->buffer->posn) { | |
517 | ||
518 | /* Try reusing the slot to get non-http alternates */ | |
519 | alt_req->http_specific = 0; | |
520 | sprintf(alt_req->url, "%s/objects/info/alternates", | |
521 | base); | |
522 | curl_easy_setopt(slot->curl, CURLOPT_URL, | |
523 | alt_req->url); | |
524 | active_requests++; | |
525 | slot->in_use = 1; | |
c9826473 NH |
526 | if (slot->finished != NULL) |
527 | (*slot->finished) = 0; | |
a3f583cb | 528 | if (!start_active_slot(slot)) { |
acc075a8 | 529 | got_alternates = -1; |
29508e1e | 530 | slot->in_use = 0; |
c9826473 NH |
531 | if (slot->finished != NULL) |
532 | (*slot->finished) = 1; | |
1d389ab6 | 533 | } |
a3f583cb | 534 | return; |
b3661567 | 535 | } |
acc075a8 | 536 | } else if (slot->curl_result != CURLE_OK) { |
a14c2256 NH |
537 | if (slot->http_code != 404 && |
538 | slot->curl_result != CURLE_FILE_COULDNT_READ_FILE) { | |
acc075a8 NH |
539 | got_alternates = -1; |
540 | return; | |
541 | } | |
b3661567 DB |
542 | } |
543 | ||
29508e1e | 544 | fwrite_buffer(&null_byte, 1, 1, alt_req->buffer); |
acc075a8 NH |
545 | alt_req->buffer->posn--; |
546 | data = alt_req->buffer->buffer; | |
1b0c1e67 | 547 | |
acc075a8 | 548 | while (i < alt_req->buffer->posn) { |
b3661567 | 549 | int posn = i; |
acc075a8 | 550 | while (posn < alt_req->buffer->posn && data[posn] != '\n') |
b3661567 DB |
551 | posn++; |
552 | if (data[posn] == '\n') { | |
1b0c1e67 DB |
553 | int okay = 0; |
554 | int serverlen = 0; | |
555 | struct alt_base *newalt; | |
556 | char *target = NULL; | |
8d9fbe57 | 557 | char *path; |
b3661567 | 558 | if (data[i] == '/') { |
1b0c1e67 DB |
559 | serverlen = strchr(base + 8, '/') - base; |
560 | okay = 1; | |
561 | } else if (!memcmp(data + i, "../", 3)) { | |
562 | i += 3; | |
563 | serverlen = strlen(base); | |
8fcf7f9a | 564 | while (i + 2 < posn && |
1b0c1e67 DB |
565 | !memcmp(data + i, "../", 3)) { |
566 | do { | |
567 | serverlen--; | |
568 | } while (serverlen && | |
569 | base[serverlen - 1] != '/'); | |
570 | i += 3; | |
571 | } | |
572 | // If the server got removed, give up. | |
8fcf7f9a | 573 | okay = strchr(base, ':') - base + 3 < |
1b0c1e67 | 574 | serverlen; |
acc075a8 | 575 | } else if (alt_req->http_specific) { |
1b0c1e67 DB |
576 | char *colon = strchr(data + i, ':'); |
577 | char *slash = strchr(data + i, '/'); | |
578 | if (colon && slash && colon < data + posn && | |
579 | slash < data + posn && colon < slash) { | |
580 | okay = 1; | |
581 | } | |
582 | } | |
583 | // skip 'objects' at end | |
584 | if (okay) { | |
585 | target = xmalloc(serverlen + posn - i - 6); | |
b3661567 DB |
586 | strncpy(target, base, serverlen); |
587 | strncpy(target + serverlen, data + i, | |
588 | posn - i - 7); | |
589 | target[serverlen + posn - i - 7] = '\0'; | |
590 | if (get_verbosely) | |
8fcf7f9a | 591 | fprintf(stderr, |
b3661567 DB |
592 | "Also look at %s\n", target); |
593 | newalt = xmalloc(sizeof(*newalt)); | |
1d389ab6 | 594 | newalt->next = NULL; |
b3661567 DB |
595 | newalt->base = target; |
596 | newalt->got_indices = 0; | |
597 | newalt->packs = NULL; | |
8d9fbe57 NH |
598 | path = strstr(target, "//"); |
599 | if (path) { | |
ef9e58c8 | 600 | path = strchr(path+2, '/'); |
8d9fbe57 NH |
601 | if (path) |
602 | newalt->path_len = strlen(path); | |
603 | } | |
604 | ||
1d389ab6 NH |
605 | while (tail->next != NULL) |
606 | tail = tail->next; | |
607 | tail->next = newalt; | |
b3661567 DB |
608 | } |
609 | } | |
610 | i = posn + 1; | |
611 | } | |
bc8f2652 | 612 | |
f7eb290f | 613 | got_alternates = 1; |
acc075a8 NH |
614 | } |
615 | ||
616 | static void fetch_alternates(char *base) | |
617 | { | |
618 | struct buffer buffer; | |
619 | char *url; | |
620 | char *data; | |
621 | struct active_request_slot *slot; | |
cb754fdf | 622 | struct alternates_request alt_req; |
acc075a8 NH |
623 | |
624 | /* If another request has already started fetching alternates, | |
625 | wait for them to arrive and return to processing this request's | |
626 | curl message */ | |
29508e1e | 627 | #ifdef USE_CURL_MULTI |
acc075a8 | 628 | while (got_alternates == 0) { |
29508e1e | 629 | step_active_slots(); |
acc075a8 | 630 | } |
29508e1e | 631 | #endif |
acc075a8 NH |
632 | |
633 | /* Nothing to do if they've already been fetched */ | |
634 | if (got_alternates == 1) | |
635 | return; | |
636 | ||
637 | /* Start the fetch */ | |
638 | got_alternates = 0; | |
639 | ||
640 | data = xmalloc(4096); | |
641 | buffer.size = 4096; | |
642 | buffer.posn = 0; | |
643 | buffer.buffer = data; | |
644 | ||
645 | if (get_verbosely) | |
646 | fprintf(stderr, "Getting alternates list for %s\n", base); | |
8fcf7f9a | 647 | |
acc075a8 NH |
648 | url = xmalloc(strlen(base) + 31); |
649 | sprintf(url, "%s/objects/info/http-alternates", base); | |
650 | ||
651 | /* Use a callback to process the result, since another request | |
652 | may fail and need to have alternates loaded before continuing */ | |
653 | slot = get_active_slot(); | |
e388ab74 | 654 | slot->callback_func = process_alternates_response; |
acc075a8 NH |
655 | slot->callback_data = &alt_req; |
656 | ||
657 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
29508e1e | 658 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); |
acc075a8 NH |
659 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
660 | ||
661 | alt_req.base = base; | |
662 | alt_req.url = url; | |
663 | alt_req.buffer = &buffer; | |
664 | alt_req.http_specific = 1; | |
665 | alt_req.slot = slot; | |
666 | ||
667 | if (start_active_slot(slot)) | |
668 | run_active_slot(slot); | |
669 | else | |
670 | got_alternates = -1; | |
671 | ||
672 | free(data); | |
673 | free(url); | |
b3661567 DB |
674 | } |
675 | ||
8d9fbe57 NH |
676 | #ifndef NO_EXPAT |
677 | static void | |
678 | xml_start_tag(void *userData, const char *name, const char **atts) | |
679 | { | |
680 | struct xml_ctx *ctx = (struct xml_ctx *)userData; | |
ef9e58c8 | 681 | const char *c = strchr(name, ':'); |
8d9fbe57 NH |
682 | int new_len; |
683 | ||
684 | if (c == NULL) | |
685 | c = name; | |
686 | else | |
687 | c++; | |
688 | ||
689 | new_len = strlen(ctx->name) + strlen(c) + 2; | |
690 | ||
691 | if (new_len > ctx->len) { | |
692 | ctx->name = xrealloc(ctx->name, new_len); | |
693 | ctx->len = new_len; | |
694 | } | |
695 | strcat(ctx->name, "."); | |
696 | strcat(ctx->name, c); | |
697 | ||
698 | if (ctx->cdata) { | |
699 | free(ctx->cdata); | |
700 | ctx->cdata = NULL; | |
701 | } | |
702 | ||
703 | ctx->userFunc(ctx, 0); | |
704 | } | |
705 | ||
706 | static void | |
707 | xml_end_tag(void *userData, const char *name) | |
708 | { | |
709 | struct xml_ctx *ctx = (struct xml_ctx *)userData; | |
ef9e58c8 | 710 | const char *c = strchr(name, ':'); |
8d9fbe57 NH |
711 | char *ep; |
712 | ||
713 | ctx->userFunc(ctx, 1); | |
714 | ||
715 | if (c == NULL) | |
716 | c = name; | |
717 | else | |
718 | c++; | |
719 | ||
720 | ep = ctx->name + strlen(ctx->name) - strlen(c) - 1; | |
721 | *ep = 0; | |
722 | } | |
723 | ||
724 | static void | |
725 | xml_cdata(void *userData, const XML_Char *s, int len) | |
726 | { | |
727 | struct xml_ctx *ctx = (struct xml_ctx *)userData; | |
728 | if (ctx->cdata) | |
729 | free(ctx->cdata); | |
730 | ctx->cdata = xcalloc(len+1, 1); | |
731 | strncpy(ctx->cdata, s, len); | |
732 | } | |
733 | ||
734 | static int remote_ls(struct alt_base *repo, const char *path, int flags, | |
735 | void (*userFunc)(struct remote_ls_ctx *ls), | |
736 | void *userData); | |
737 | ||
738 | static void handle_remote_ls_ctx(struct xml_ctx *ctx, int tag_closed) | |
739 | { | |
740 | struct remote_ls_ctx *ls = (struct remote_ls_ctx *)ctx->userData; | |
741 | ||
742 | if (tag_closed) { | |
743 | if (!strcmp(ctx->name, DAV_PROPFIND_RESP) && ls->dentry_name) { | |
744 | if (ls->dentry_flags & IS_DIR) { | |
745 | if (ls->flags & PROCESS_DIRS) { | |
746 | ls->userFunc(ls); | |
747 | } | |
748 | if (strcmp(ls->dentry_name, ls->path) && | |
749 | ls->flags & RECURSIVE) { | |
750 | ls->rc = remote_ls(ls->repo, | |
751 | ls->dentry_name, | |
752 | ls->flags, | |
753 | ls->userFunc, | |
754 | ls->userData); | |
755 | } | |
756 | } else if (ls->flags & PROCESS_FILES) { | |
757 | ls->userFunc(ls); | |
758 | } | |
759 | } else if (!strcmp(ctx->name, DAV_PROPFIND_NAME) && ctx->cdata) { | |
760 | ls->dentry_name = xmalloc(strlen(ctx->cdata) - | |
761 | ls->repo->path_len + 1); | |
762 | strcpy(ls->dentry_name, ctx->cdata + ls->repo->path_len); | |
763 | } else if (!strcmp(ctx->name, DAV_PROPFIND_COLLECTION)) { | |
764 | ls->dentry_flags |= IS_DIR; | |
765 | } | |
766 | } else if (!strcmp(ctx->name, DAV_PROPFIND_RESP)) { | |
767 | if (ls->dentry_name) { | |
768 | free(ls->dentry_name); | |
769 | } | |
770 | ls->dentry_name = NULL; | |
771 | ls->dentry_flags = 0; | |
772 | } | |
773 | } | |
774 | ||
775 | static int remote_ls(struct alt_base *repo, const char *path, int flags, | |
776 | void (*userFunc)(struct remote_ls_ctx *ls), | |
777 | void *userData) | |
778 | { | |
779 | char *url = xmalloc(strlen(repo->base) + strlen(path) + 1); | |
780 | struct active_request_slot *slot; | |
781 | struct slot_results results; | |
782 | struct buffer in_buffer; | |
783 | struct buffer out_buffer; | |
784 | char *in_data; | |
785 | char *out_data; | |
786 | XML_Parser parser = XML_ParserCreate(NULL); | |
787 | enum XML_Status result; | |
788 | struct curl_slist *dav_headers = NULL; | |
789 | struct xml_ctx ctx; | |
790 | struct remote_ls_ctx ls; | |
791 | ||
792 | ls.flags = flags; | |
793 | ls.repo = repo; | |
794 | ls.path = strdup(path); | |
795 | ls.dentry_name = NULL; | |
796 | ls.dentry_flags = 0; | |
797 | ls.userData = userData; | |
798 | ls.userFunc = userFunc; | |
799 | ls.rc = 0; | |
800 | ||
801 | sprintf(url, "%s%s", repo->base, path); | |
802 | ||
803 | out_buffer.size = strlen(PROPFIND_ALL_REQUEST); | |
804 | out_data = xmalloc(out_buffer.size + 1); | |
805 | snprintf(out_data, out_buffer.size + 1, PROPFIND_ALL_REQUEST); | |
806 | out_buffer.posn = 0; | |
807 | out_buffer.buffer = out_data; | |
808 | ||
809 | in_buffer.size = 4096; | |
810 | in_data = xmalloc(in_buffer.size); | |
811 | in_buffer.posn = 0; | |
812 | in_buffer.buffer = in_data; | |
813 | ||
814 | dav_headers = curl_slist_append(dav_headers, "Depth: 1"); | |
815 | dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml"); | |
816 | ||
817 | slot = get_active_slot(); | |
818 | slot->results = &results; | |
819 | curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer); | |
820 | curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size); | |
821 | curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer); | |
822 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer); | |
823 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
824 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
825 | curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1); | |
826 | curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND); | |
827 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers); | |
828 | ||
829 | if (start_active_slot(slot)) { | |
830 | run_active_slot(slot); | |
831 | if (results.curl_result == CURLE_OK) { | |
832 | ctx.name = xcalloc(10, 1); | |
833 | ctx.len = 0; | |
834 | ctx.cdata = NULL; | |
835 | ctx.userFunc = handle_remote_ls_ctx; | |
836 | ctx.userData = &ls; | |
837 | XML_SetUserData(parser, &ctx); | |
838 | XML_SetElementHandler(parser, xml_start_tag, | |
839 | xml_end_tag); | |
840 | XML_SetCharacterDataHandler(parser, xml_cdata); | |
841 | result = XML_Parse(parser, in_buffer.buffer, | |
842 | in_buffer.posn, 1); | |
843 | free(ctx.name); | |
844 | ||
845 | if (result != XML_STATUS_OK) { | |
846 | ls.rc = error("XML error: %s", | |
847 | XML_ErrorString( | |
848 | XML_GetErrorCode(parser))); | |
849 | } | |
850 | } else { | |
851 | ls.rc = -1; | |
852 | } | |
853 | } else { | |
854 | ls.rc = error("Unable to start PROPFIND request"); | |
855 | } | |
856 | ||
857 | free(ls.path); | |
858 | free(url); | |
859 | free(out_data); | |
860 | free(in_buffer.buffer); | |
861 | curl_slist_free_all(dav_headers); | |
862 | ||
863 | return ls.rc; | |
864 | } | |
865 | ||
866 | static void process_ls_pack(struct remote_ls_ctx *ls) | |
867 | { | |
868 | unsigned char sha1[20]; | |
869 | ||
870 | if (strlen(ls->dentry_name) == 63 && | |
871 | !strncmp(ls->dentry_name, "objects/pack/pack-", 18) && | |
872 | !strncmp(ls->dentry_name+58, ".pack", 5)) { | |
873 | get_sha1_hex(ls->dentry_name + 18, sha1); | |
874 | setup_index(ls->repo, sha1); | |
875 | } | |
876 | } | |
877 | #endif | |
878 | ||
b3661567 | 879 | static int fetch_indices(struct alt_base *repo) |
182005b9 DB |
880 | { |
881 | unsigned char sha1[20]; | |
882 | char *url; | |
883 | struct buffer buffer; | |
884 | char *data; | |
885 | int i = 0; | |
886 | ||
1d389ab6 | 887 | struct active_request_slot *slot; |
cb754fdf | 888 | struct slot_results results; |
1d389ab6 | 889 | |
b3661567 | 890 | if (repo->got_indices) |
182005b9 DB |
891 | return 0; |
892 | ||
893 | data = xmalloc(4096); | |
894 | buffer.size = 4096; | |
895 | buffer.posn = 0; | |
896 | buffer.buffer = data; | |
897 | ||
898 | if (get_verbosely) | |
6fd72e39 | 899 | fprintf(stderr, "Getting pack list for %s\n", repo->base); |
8fcf7f9a | 900 | |
8d9fbe57 NH |
901 | #ifndef NO_EXPAT |
902 | if (remote_ls(repo, "objects/pack/", PROCESS_FILES, | |
903 | process_ls_pack, NULL) == 0) | |
904 | return 0; | |
905 | #endif | |
906 | ||
b3661567 DB |
907 | url = xmalloc(strlen(repo->base) + 21); |
908 | sprintf(url, "%s/objects/info/packs", repo->base); | |
182005b9 | 909 | |
1d389ab6 | 910 | slot = get_active_slot(); |
c8568e13 | 911 | slot->results = &results; |
1d389ab6 | 912 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); |
29508e1e | 913 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); |
1d389ab6 NH |
914 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); |
915 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
916 | if (start_active_slot(slot)) { | |
917 | run_active_slot(slot); | |
c8568e13 NH |
918 | if (results.curl_result != CURLE_OK) { |
919 | if (results.http_code == 404 || | |
920 | results.curl_result == CURLE_FILE_COULDNT_READ_FILE) { | |
5e3a7691 NH |
921 | repo->got_indices = 1; |
922 | free(buffer.buffer); | |
923 | return 0; | |
924 | } else { | |
925 | repo->got_indices = 0; | |
926 | free(buffer.buffer); | |
927 | return error("%s", curl_errorstr); | |
928 | } | |
bc8f2652 | 929 | } |
1d389ab6 | 930 | } else { |
5e3a7691 | 931 | repo->got_indices = 0; |
bc8f2652 | 932 | free(buffer.buffer); |
1d389ab6 NH |
933 | return error("Unable to start request"); |
934 | } | |
182005b9 | 935 | |
bc8f2652 | 936 | data = buffer.buffer; |
b3661567 | 937 | while (i < buffer.posn) { |
182005b9 DB |
938 | switch (data[i]) { |
939 | case 'P': | |
940 | i++; | |
455c161c | 941 | if (i + 52 <= buffer.posn && |
182005b9 DB |
942 | !strncmp(data + i, " pack-", 6) && |
943 | !strncmp(data + i + 46, ".pack\n", 6)) { | |
944 | get_sha1_hex(data + i + 6, sha1); | |
b3661567 | 945 | setup_index(repo, sha1); |
182005b9 DB |
946 | i += 51; |
947 | break; | |
948 | } | |
949 | default: | |
455c161c | 950 | while (i < buffer.posn && data[i] != '\n') |
182005b9 DB |
951 | i++; |
952 | } | |
953 | i++; | |
b3661567 | 954 | } |
182005b9 | 955 | |
bc8f2652 | 956 | free(buffer.buffer); |
b3661567 | 957 | repo->got_indices = 1; |
182005b9 DB |
958 | return 0; |
959 | } | |
960 | ||
b3661567 | 961 | static int fetch_pack(struct alt_base *repo, unsigned char *sha1) |
182005b9 DB |
962 | { |
963 | char *url; | |
964 | struct packed_git *target; | |
965 | struct packed_git **lst; | |
966 | FILE *packfile; | |
967 | char *filename; | |
49a0f240 NH |
968 | char tmpfile[PATH_MAX]; |
969 | int ret; | |
970 | long prev_posn = 0; | |
971 | char range[RANGE_HEADER_SIZE]; | |
972 | struct curl_slist *range_header = NULL; | |
1d389ab6 NH |
973 | |
974 | struct active_request_slot *slot; | |
cb754fdf | 975 | struct slot_results results; |
182005b9 | 976 | |
b3661567 | 977 | if (fetch_indices(repo)) |
182005b9 | 978 | return -1; |
b3661567 | 979 | target = find_sha1_pack(sha1, repo->packs); |
182005b9 | 980 | if (!target) |
b3661567 | 981 | return -1; |
182005b9 DB |
982 | |
983 | if (get_verbosely) { | |
984 | fprintf(stderr, "Getting pack %s\n", | |
985 | sha1_to_hex(target->sha1)); | |
986 | fprintf(stderr, " which contains %s\n", | |
987 | sha1_to_hex(sha1)); | |
988 | } | |
989 | ||
b3661567 | 990 | url = xmalloc(strlen(repo->base) + 65); |
182005b9 | 991 | sprintf(url, "%s/objects/pack/pack-%s.pack", |
b3661567 | 992 | repo->base, sha1_to_hex(target->sha1)); |
182005b9 DB |
993 | |
994 | filename = sha1_pack_name(target->sha1); | |
49a0f240 NH |
995 | snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename); |
996 | packfile = fopen(tmpfile, "a"); | |
182005b9 DB |
997 | if (!packfile) |
998 | return error("Unable to open local file %s for pack", | |
999 | filename); | |
1000 | ||
1d389ab6 | 1001 | slot = get_active_slot(); |
c8568e13 | 1002 | slot->results = &results; |
1d389ab6 NH |
1003 | curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile); |
1004 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
1005 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
03126006 | 1006 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1d389ab6 | 1007 | slot->local = packfile; |
1ddea77e | 1008 | |
49a0f240 NH |
1009 | /* If there is data present from a previous transfer attempt, |
1010 | resume where it left off */ | |
1011 | prev_posn = ftell(packfile); | |
1012 | if (prev_posn>0) { | |
1013 | if (get_verbosely) | |
1014 | fprintf(stderr, | |
1015 | "Resuming fetch of pack %s at byte %ld\n", | |
1016 | sha1_to_hex(target->sha1), prev_posn); | |
1017 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
1018 | range_header = curl_slist_append(range_header, range); | |
1d389ab6 | 1019 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header); |
49a0f240 NH |
1020 | } |
1021 | ||
1d389ab6 NH |
1022 | if (start_active_slot(slot)) { |
1023 | run_active_slot(slot); | |
c8568e13 | 1024 | if (results.curl_result != CURLE_OK) { |
1d389ab6 NH |
1025 | fclose(packfile); |
1026 | return error("Unable to get pack file %s\n%s", url, | |
1027 | curl_errorstr); | |
1028 | } | |
1029 | } else { | |
313c4714 | 1030 | fclose(packfile); |
1d389ab6 | 1031 | return error("Unable to start request"); |
182005b9 DB |
1032 | } |
1033 | ||
1034 | fclose(packfile); | |
1035 | ||
b721e01f | 1036 | ret = move_temp_to_file(tmpfile, filename); |
49a0f240 | 1037 | if (ret) |
b721e01f | 1038 | return ret; |
49a0f240 | 1039 | |
b3661567 | 1040 | lst = &repo->packs; |
182005b9 DB |
1041 | while (*lst != target) |
1042 | lst = &((*lst)->next); | |
1043 | *lst = (*lst)->next; | |
1044 | ||
271421cd JH |
1045 | if (verify_pack(target, 0)) |
1046 | return -1; | |
182005b9 DB |
1047 | install_packed_git(target); |
1048 | ||
1049 | return 0; | |
1050 | } | |
1051 | ||
53f31389 MW |
1052 | static void abort_object_request(struct object_request *obj_req) |
1053 | { | |
1054 | if (obj_req->local >= 0) { | |
1055 | close(obj_req->local); | |
1056 | obj_req->local = -1; | |
1057 | } | |
1058 | unlink(obj_req->tmpfile); | |
1059 | if (obj_req->slot) { | |
1060 | release_active_slot(obj_req->slot); | |
1061 | obj_req->slot = NULL; | |
1062 | } | |
1063 | release_object_request(obj_req); | |
1064 | } | |
1065 | ||
a7928f8e | 1066 | static int fetch_object(struct alt_base *repo, unsigned char *sha1) |
6eb7ed54 DB |
1067 | { |
1068 | char *hex = sha1_to_hex(sha1); | |
29508e1e | 1069 | int ret = 0; |
e388ab74 | 1070 | struct object_request *obj_req = object_queue_head; |
1d389ab6 | 1071 | |
e388ab74 NH |
1072 | while (obj_req != NULL && memcmp(obj_req->sha1, sha1, 20)) |
1073 | obj_req = obj_req->next; | |
1074 | if (obj_req == NULL) | |
1d389ab6 NH |
1075 | return error("Couldn't find request for %s in the queue", hex); |
1076 | ||
e388ab74 | 1077 | if (has_sha1_file(obj_req->sha1)) { |
53f31389 | 1078 | abort_object_request(obj_req); |
11f0dafe NH |
1079 | return 0; |
1080 | } | |
1081 | ||
a7a8d378 | 1082 | #ifdef USE_CURL_MULTI |
e388ab74 | 1083 | while (obj_req->state == WAITING) { |
29508e1e | 1084 | step_active_slots(); |
1d389ab6 | 1085 | } |
a7a8d378 | 1086 | #else |
e388ab74 | 1087 | start_object_request(obj_req); |
a7a8d378 | 1088 | #endif |
6eb7ed54 | 1089 | |
e388ab74 NH |
1090 | while (obj_req->state == ACTIVE) { |
1091 | run_active_slot(obj_req->slot); | |
a7a8d378 | 1092 | } |
e388ab74 NH |
1093 | if (obj_req->local != -1) { |
1094 | close(obj_req->local); obj_req->local = -1; | |
313c4714 | 1095 | } |
6eb7ed54 | 1096 | |
e388ab74 | 1097 | if (obj_req->state == ABORTED) { |
29508e1e | 1098 | ret = error("Request for %s aborted", hex); |
e388ab74 NH |
1099 | } else if (obj_req->curl_result != CURLE_OK && |
1100 | obj_req->http_code != 416) { | |
a14c2256 NH |
1101 | if (obj_req->http_code == 404 || |
1102 | obj_req->curl_result == CURLE_FILE_COULDNT_READ_FILE) | |
e2029eb9 PB |
1103 | ret = -1; /* Be silent, it is probably in a pack. */ |
1104 | else | |
1105 | ret = error("%s (curl_result = %d, http_code = %ld, sha1 = %s)", | |
e388ab74 NH |
1106 | obj_req->errorstr, obj_req->curl_result, |
1107 | obj_req->http_code, hex); | |
1108 | } else if (obj_req->zret != Z_STREAM_END) { | |
bb528079 | 1109 | corrupt_object_found++; |
bd2afde8 | 1110 | ret = error("File %s (%s) corrupt", hex, obj_req->url); |
e388ab74 | 1111 | } else if (memcmp(obj_req->sha1, obj_req->real_sha1, 20)) { |
bd2afde8 | 1112 | ret = error("File %s has bad hash", hex); |
e388ab74 | 1113 | } else if (obj_req->rename < 0) { |
7b934ec0 MW |
1114 | ret = error("unable to write sha1 filename %s", |
1115 | obj_req->filename); | |
6eb7ed54 | 1116 | } |
49a0f240 | 1117 | |
e388ab74 | 1118 | release_object_request(obj_req); |
29508e1e | 1119 | return ret; |
6eb7ed54 DB |
1120 | } |
1121 | ||
b3661567 DB |
1122 | int fetch(unsigned char *sha1) |
1123 | { | |
1124 | struct alt_base *altbase = alt; | |
1d389ab6 NH |
1125 | |
1126 | if (!fetch_object(altbase, sha1)) | |
1127 | return 0; | |
b3661567 | 1128 | while (altbase) { |
b3661567 DB |
1129 | if (!fetch_pack(altbase, sha1)) |
1130 | return 0; | |
f7eb290f | 1131 | fetch_alternates(alt->base); |
b3661567 DB |
1132 | altbase = altbase->next; |
1133 | } | |
bd2afde8 | 1134 | return error("Unable to find %s under %s", sha1_to_hex(sha1), |
1d389ab6 | 1135 | alt->base); |
b3661567 DB |
1136 | } |
1137 | ||
94fa447a JH |
1138 | static inline int needs_quote(int ch) |
1139 | { | |
1140 | switch (ch) { | |
1141 | case '/': case '-': case '.': | |
1142 | case 'A'...'Z': case 'a'...'z': case '0'...'9': | |
1143 | return 0; | |
1144 | default: | |
1145 | return 1; | |
1146 | } | |
1147 | } | |
1148 | ||
1149 | static inline int hex(int v) | |
1150 | { | |
1151 | if (v < 10) return '0' + v; | |
1152 | else return 'A' + v - 10; | |
1153 | } | |
1154 | ||
1155 | static char *quote_ref_url(const char *base, const char *ref) | |
1156 | { | |
1157 | const char *cp; | |
1158 | char *dp, *qref; | |
1159 | int len, baselen, ch; | |
1160 | ||
1161 | baselen = strlen(base); | |
1162 | len = baselen + 6; /* "refs/" + NUL */ | |
1163 | for (cp = ref; (ch = *cp) != 0; cp++, len++) | |
1164 | if (needs_quote(ch)) | |
1165 | len += 2; /* extra two hex plus replacement % */ | |
1166 | qref = xmalloc(len); | |
1167 | memcpy(qref, base, baselen); | |
1168 | memcpy(qref + baselen, "refs/", 5); | |
1169 | for (cp = ref, dp = qref + baselen + 5; (ch = *cp) != 0; cp++) { | |
1170 | if (needs_quote(ch)) { | |
1171 | *dp++ = '%'; | |
1172 | *dp++ = hex((ch >> 4) & 0xF); | |
1173 | *dp++ = hex(ch & 0xF); | |
1174 | } | |
1175 | else | |
1176 | *dp++ = ch; | |
1177 | } | |
1178 | *dp = 0; | |
1179 | ||
1180 | return qref; | |
1181 | } | |
1182 | ||
cd541a68 DB |
1183 | int fetch_ref(char *ref, unsigned char *sha1) |
1184 | { | |
94fa447a | 1185 | char *url; |
fa3e0655 DB |
1186 | char hex[42]; |
1187 | struct buffer buffer; | |
1d389ab6 NH |
1188 | char *base = alt->base; |
1189 | struct active_request_slot *slot; | |
cb754fdf | 1190 | struct slot_results results; |
fa3e0655 DB |
1191 | buffer.size = 41; |
1192 | buffer.posn = 0; | |
1193 | buffer.buffer = hex; | |
1194 | hex[41] = '\0'; | |
8fcf7f9a | 1195 | |
94fa447a | 1196 | url = quote_ref_url(base, ref); |
1d389ab6 | 1197 | slot = get_active_slot(); |
c8568e13 | 1198 | slot->results = &results; |
1d389ab6 NH |
1199 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); |
1200 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
1201 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
1202 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
1203 | if (start_active_slot(slot)) { | |
1204 | run_active_slot(slot); | |
c8568e13 | 1205 | if (results.curl_result != CURLE_OK) |
1d389ab6 NH |
1206 | return error("Couldn't get %s for %s\n%s", |
1207 | url, ref, curl_errorstr); | |
1208 | } else { | |
1209 | return error("Unable to start request"); | |
1210 | } | |
fa3e0655 DB |
1211 | |
1212 | hex[40] = '\0'; | |
1213 | get_sha1_hex(hex, sha1); | |
1214 | return 0; | |
cd541a68 DB |
1215 | } |
1216 | ||
6eb7ed54 DB |
1217 | int main(int argc, char **argv) |
1218 | { | |
1219 | char *commit_id; | |
1220 | char *url; | |
8d9fbe57 | 1221 | char *path; |
6eb7ed54 | 1222 | int arg = 1; |
7b9ae53e | 1223 | int rc = 0; |
6eb7ed54 | 1224 | |
5a327713 JH |
1225 | setup_git_directory(); |
1226 | ||
6eb7ed54 DB |
1227 | while (arg < argc && argv[arg][0] == '-') { |
1228 | if (argv[arg][1] == 't') { | |
4250a5e5 | 1229 | get_tree = 1; |
6eb7ed54 | 1230 | } else if (argv[arg][1] == 'c') { |
4250a5e5 | 1231 | get_history = 1; |
6eb7ed54 | 1232 | } else if (argv[arg][1] == 'a') { |
4250a5e5 DB |
1233 | get_all = 1; |
1234 | get_tree = 1; | |
1235 | get_history = 1; | |
e78d9772 JH |
1236 | } else if (argv[arg][1] == 'v') { |
1237 | get_verbosely = 1; | |
fa3e0655 DB |
1238 | } else if (argv[arg][1] == 'w') { |
1239 | write_ref = argv[arg + 1]; | |
1240 | arg++; | |
820eca68 DB |
1241 | } else if (!strcmp(argv[arg], "--recover")) { |
1242 | get_recover = 1; | |
6eb7ed54 DB |
1243 | } |
1244 | arg++; | |
1245 | } | |
1246 | if (argc < arg + 2) { | |
215a7ad1 | 1247 | usage("git-http-fetch [-c] [-t] [-a] [-d] [-v] [--recover] [-w ref] commit-id url"); |
6eb7ed54 DB |
1248 | return 1; |
1249 | } | |
1250 | commit_id = argv[arg]; | |
1251 | url = argv[arg + 1]; | |
1252 | ||
29508e1e | 1253 | http_init(); |
d402d556 | 1254 | |
1db69b57 | 1255 | no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:"); |
3dcb90f5 | 1256 | |
b3661567 DB |
1257 | alt = xmalloc(sizeof(*alt)); |
1258 | alt->base = url; | |
1259 | alt->got_indices = 0; | |
1260 | alt->packs = NULL; | |
1261 | alt->next = NULL; | |
8d9fbe57 NH |
1262 | path = strstr(url, "//"); |
1263 | if (path) { | |
ef9e58c8 | 1264 | path = strchr(path+2, '/'); |
8d9fbe57 NH |
1265 | if (path) |
1266 | alt->path_len = strlen(path); | |
1267 | } | |
6eb7ed54 | 1268 | |
4250a5e5 | 1269 | if (pull(commit_id)) |
7b9ae53e | 1270 | rc = 1; |
6eb7ed54 | 1271 | |
1db69b57 | 1272 | curl_slist_free_all(no_pragma_header); |
29508e1e NH |
1273 | |
1274 | http_cleanup(); | |
1275 | ||
bb528079 JH |
1276 | if (corrupt_object_found) { |
1277 | fprintf(stderr, | |
1278 | "Some loose object were found to be corrupt, but they might be just\n" | |
1279 | "a false '404 Not Found' error message sent with incorrect HTTP\n" | |
1280 | "status code. Suggest running git fsck-objects.\n"); | |
1281 | } | |
7b9ae53e | 1282 | return rc; |
6eb7ed54 | 1283 | } |