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1 | #include "cache.h" | |
2 | #include "config.h" | |
3 | #include "refs.h" | |
4 | #include "pkt-line.h" | |
5 | #include "sideband.h" | |
6 | #include "repository.h" | |
7 | #include "object-store.h" | |
8 | #include "tag.h" | |
9 | #include "object.h" | |
10 | #include "commit.h" | |
11 | #include "diff.h" | |
12 | #include "revision.h" | |
13 | #include "list-objects.h" | |
14 | #include "list-objects-filter.h" | |
15 | #include "list-objects-filter-options.h" | |
16 | #include "run-command.h" | |
17 | #include "connect.h" | |
18 | #include "sigchain.h" | |
19 | #include "version.h" | |
20 | #include "string-list.h" | |
21 | #include "argv-array.h" | |
22 | #include "prio-queue.h" | |
23 | #include "protocol.h" | |
24 | #include "quote.h" | |
25 | #include "upload-pack.h" | |
26 | #include "serve.h" | |
27 | #include "commit-reach.h" | |
28 | ||
29 | /* Remember to update object flag allocation in object.h */ | |
30 | #define THEY_HAVE (1u << 11) | |
31 | #define OUR_REF (1u << 12) | |
32 | #define WANTED (1u << 13) | |
33 | #define COMMON_KNOWN (1u << 14) | |
34 | ||
35 | #define SHALLOW (1u << 16) | |
36 | #define NOT_SHALLOW (1u << 17) | |
37 | #define CLIENT_SHALLOW (1u << 18) | |
38 | #define HIDDEN_REF (1u << 19) | |
39 | ||
40 | static timestamp_t oldest_have; | |
41 | ||
42 | static int deepen_relative; | |
43 | static int multi_ack; | |
44 | static int no_done; | |
45 | static int use_thin_pack, use_ofs_delta, use_include_tag; | |
46 | static int no_progress, daemon_mode; | |
47 | /* Allow specifying sha1 if it is a ref tip. */ | |
48 | #define ALLOW_TIP_SHA1 01 | |
49 | /* Allow request of a sha1 if it is reachable from a ref (possibly hidden ref). */ | |
50 | #define ALLOW_REACHABLE_SHA1 02 | |
51 | /* Allow request of any sha1. Implies ALLOW_TIP_SHA1 and ALLOW_REACHABLE_SHA1. */ | |
52 | #define ALLOW_ANY_SHA1 07 | |
53 | static unsigned int allow_unadvertised_object_request; | |
54 | static int shallow_nr; | |
55 | static struct object_array have_obj; | |
56 | static struct object_array want_obj; | |
57 | static struct object_array extra_edge_obj; | |
58 | static unsigned int timeout; | |
59 | static int keepalive = 5; | |
60 | /* 0 for no sideband, | |
61 | * otherwise maximum packet size (up to 65520 bytes). | |
62 | */ | |
63 | static int use_sideband; | |
64 | static int stateless_rpc; | |
65 | static const char *pack_objects_hook; | |
66 | ||
67 | static int filter_capability_requested; | |
68 | static int allow_filter; | |
69 | static int allow_ref_in_want; | |
70 | static struct list_objects_filter_options filter_options; | |
71 | ||
72 | static void reset_timeout(void) | |
73 | { | |
74 | alarm(timeout); | |
75 | } | |
76 | ||
77 | static void send_client_data(int fd, const char *data, ssize_t sz) | |
78 | { | |
79 | if (use_sideband) { | |
80 | send_sideband(1, fd, data, sz, use_sideband); | |
81 | return; | |
82 | } | |
83 | if (fd == 3) | |
84 | /* emergency quit */ | |
85 | fd = 2; | |
86 | if (fd == 2) { | |
87 | /* XXX: are we happy to lose stuff here? */ | |
88 | xwrite(fd, data, sz); | |
89 | return; | |
90 | } | |
91 | write_or_die(fd, data, sz); | |
92 | } | |
93 | ||
94 | static int write_one_shallow(const struct commit_graft *graft, void *cb_data) | |
95 | { | |
96 | FILE *fp = cb_data; | |
97 | if (graft->nr_parent == -1) | |
98 | fprintf(fp, "--shallow %s\n", oid_to_hex(&graft->oid)); | |
99 | return 0; | |
100 | } | |
101 | ||
102 | static void create_pack_file(void) | |
103 | { | |
104 | struct child_process pack_objects = CHILD_PROCESS_INIT; | |
105 | char data[8193], progress[128]; | |
106 | char abort_msg[] = "aborting due to possible repository " | |
107 | "corruption on the remote side."; | |
108 | int buffered = -1; | |
109 | ssize_t sz; | |
110 | int i; | |
111 | FILE *pipe_fd; | |
112 | ||
113 | if (!pack_objects_hook) | |
114 | pack_objects.git_cmd = 1; | |
115 | else { | |
116 | argv_array_push(&pack_objects.args, pack_objects_hook); | |
117 | argv_array_push(&pack_objects.args, "git"); | |
118 | pack_objects.use_shell = 1; | |
119 | } | |
120 | ||
121 | if (shallow_nr) { | |
122 | argv_array_push(&pack_objects.args, "--shallow-file"); | |
123 | argv_array_push(&pack_objects.args, ""); | |
124 | } | |
125 | argv_array_push(&pack_objects.args, "pack-objects"); | |
126 | argv_array_push(&pack_objects.args, "--revs"); | |
127 | if (use_thin_pack) | |
128 | argv_array_push(&pack_objects.args, "--thin"); | |
129 | ||
130 | argv_array_push(&pack_objects.args, "--stdout"); | |
131 | if (shallow_nr) | |
132 | argv_array_push(&pack_objects.args, "--shallow"); | |
133 | if (!no_progress) | |
134 | argv_array_push(&pack_objects.args, "--progress"); | |
135 | if (use_ofs_delta) | |
136 | argv_array_push(&pack_objects.args, "--delta-base-offset"); | |
137 | if (use_include_tag) | |
138 | argv_array_push(&pack_objects.args, "--include-tag"); | |
139 | if (filter_options.filter_spec) { | |
140 | if (pack_objects.use_shell) { | |
141 | struct strbuf buf = STRBUF_INIT; | |
142 | sq_quote_buf(&buf, filter_options.filter_spec); | |
143 | argv_array_pushf(&pack_objects.args, "--filter=%s", buf.buf); | |
144 | strbuf_release(&buf); | |
145 | } else { | |
146 | argv_array_pushf(&pack_objects.args, "--filter=%s", | |
147 | filter_options.filter_spec); | |
148 | } | |
149 | } | |
150 | ||
151 | pack_objects.in = -1; | |
152 | pack_objects.out = -1; | |
153 | pack_objects.err = -1; | |
154 | ||
155 | if (start_command(&pack_objects)) | |
156 | die("git upload-pack: unable to fork git-pack-objects"); | |
157 | ||
158 | pipe_fd = xfdopen(pack_objects.in, "w"); | |
159 | ||
160 | if (shallow_nr) | |
161 | for_each_commit_graft(write_one_shallow, pipe_fd); | |
162 | ||
163 | for (i = 0; i < want_obj.nr; i++) | |
164 | fprintf(pipe_fd, "%s\n", | |
165 | oid_to_hex(&want_obj.objects[i].item->oid)); | |
166 | fprintf(pipe_fd, "--not\n"); | |
167 | for (i = 0; i < have_obj.nr; i++) | |
168 | fprintf(pipe_fd, "%s\n", | |
169 | oid_to_hex(&have_obj.objects[i].item->oid)); | |
170 | for (i = 0; i < extra_edge_obj.nr; i++) | |
171 | fprintf(pipe_fd, "%s\n", | |
172 | oid_to_hex(&extra_edge_obj.objects[i].item->oid)); | |
173 | fprintf(pipe_fd, "\n"); | |
174 | fflush(pipe_fd); | |
175 | fclose(pipe_fd); | |
176 | ||
177 | /* We read from pack_objects.err to capture stderr output for | |
178 | * progress bar, and pack_objects.out to capture the pack data. | |
179 | */ | |
180 | ||
181 | while (1) { | |
182 | struct pollfd pfd[2]; | |
183 | int pe, pu, pollsize; | |
184 | int ret; | |
185 | ||
186 | reset_timeout(); | |
187 | ||
188 | pollsize = 0; | |
189 | pe = pu = -1; | |
190 | ||
191 | if (0 <= pack_objects.out) { | |
192 | pfd[pollsize].fd = pack_objects.out; | |
193 | pfd[pollsize].events = POLLIN; | |
194 | pu = pollsize; | |
195 | pollsize++; | |
196 | } | |
197 | if (0 <= pack_objects.err) { | |
198 | pfd[pollsize].fd = pack_objects.err; | |
199 | pfd[pollsize].events = POLLIN; | |
200 | pe = pollsize; | |
201 | pollsize++; | |
202 | } | |
203 | ||
204 | if (!pollsize) | |
205 | break; | |
206 | ||
207 | ret = poll(pfd, pollsize, | |
208 | keepalive < 0 ? -1 : 1000 * keepalive); | |
209 | ||
210 | if (ret < 0) { | |
211 | if (errno != EINTR) { | |
212 | error_errno("poll failed, resuming"); | |
213 | sleep(1); | |
214 | } | |
215 | continue; | |
216 | } | |
217 | if (0 <= pe && (pfd[pe].revents & (POLLIN|POLLHUP))) { | |
218 | /* Status ready; we ship that in the side-band | |
219 | * or dump to the standard error. | |
220 | */ | |
221 | sz = xread(pack_objects.err, progress, | |
222 | sizeof(progress)); | |
223 | if (0 < sz) | |
224 | send_client_data(2, progress, sz); | |
225 | else if (sz == 0) { | |
226 | close(pack_objects.err); | |
227 | pack_objects.err = -1; | |
228 | } | |
229 | else | |
230 | goto fail; | |
231 | /* give priority to status messages */ | |
232 | continue; | |
233 | } | |
234 | if (0 <= pu && (pfd[pu].revents & (POLLIN|POLLHUP))) { | |
235 | /* Data ready; we keep the last byte to ourselves | |
236 | * in case we detect broken rev-list, so that we | |
237 | * can leave the stream corrupted. This is | |
238 | * unfortunate -- unpack-objects would happily | |
239 | * accept a valid packdata with trailing garbage, | |
240 | * so appending garbage after we pass all the | |
241 | * pack data is not good enough to signal | |
242 | * breakage to downstream. | |
243 | */ | |
244 | char *cp = data; | |
245 | ssize_t outsz = 0; | |
246 | if (0 <= buffered) { | |
247 | *cp++ = buffered; | |
248 | outsz++; | |
249 | } | |
250 | sz = xread(pack_objects.out, cp, | |
251 | sizeof(data) - outsz); | |
252 | if (0 < sz) | |
253 | ; | |
254 | else if (sz == 0) { | |
255 | close(pack_objects.out); | |
256 | pack_objects.out = -1; | |
257 | } | |
258 | else | |
259 | goto fail; | |
260 | sz += outsz; | |
261 | if (1 < sz) { | |
262 | buffered = data[sz-1] & 0xFF; | |
263 | sz--; | |
264 | } | |
265 | else | |
266 | buffered = -1; | |
267 | send_client_data(1, data, sz); | |
268 | } | |
269 | ||
270 | /* | |
271 | * We hit the keepalive timeout without saying anything; send | |
272 | * an empty message on the data sideband just to let the other | |
273 | * side know we're still working on it, but don't have any data | |
274 | * yet. | |
275 | * | |
276 | * If we don't have a sideband channel, there's no room in the | |
277 | * protocol to say anything, so those clients are just out of | |
278 | * luck. | |
279 | */ | |
280 | if (!ret && use_sideband) { | |
281 | static const char buf[] = "0005\1"; | |
282 | write_or_die(1, buf, 5); | |
283 | } | |
284 | } | |
285 | ||
286 | if (finish_command(&pack_objects)) { | |
287 | error("git upload-pack: git-pack-objects died with error."); | |
288 | goto fail; | |
289 | } | |
290 | ||
291 | /* flush the data */ | |
292 | if (0 <= buffered) { | |
293 | data[0] = buffered; | |
294 | send_client_data(1, data, 1); | |
295 | fprintf(stderr, "flushed.\n"); | |
296 | } | |
297 | if (use_sideband) | |
298 | packet_flush(1); | |
299 | return; | |
300 | ||
301 | fail: | |
302 | send_client_data(3, abort_msg, sizeof(abort_msg)); | |
303 | die("git upload-pack: %s", abort_msg); | |
304 | } | |
305 | ||
306 | static int got_oid(const char *hex, struct object_id *oid) | |
307 | { | |
308 | struct object *o; | |
309 | int we_knew_they_have = 0; | |
310 | ||
311 | if (get_oid_hex(hex, oid)) | |
312 | die("git upload-pack: expected SHA1 object, got '%s'", hex); | |
313 | if (!has_object_file(oid)) | |
314 | return -1; | |
315 | ||
316 | o = parse_object(the_repository, oid); | |
317 | if (!o) | |
318 | die("oops (%s)", oid_to_hex(oid)); | |
319 | if (o->type == OBJ_COMMIT) { | |
320 | struct commit_list *parents; | |
321 | struct commit *commit = (struct commit *)o; | |
322 | if (o->flags & THEY_HAVE) | |
323 | we_knew_they_have = 1; | |
324 | else | |
325 | o->flags |= THEY_HAVE; | |
326 | if (!oldest_have || (commit->date < oldest_have)) | |
327 | oldest_have = commit->date; | |
328 | for (parents = commit->parents; | |
329 | parents; | |
330 | parents = parents->next) | |
331 | parents->item->object.flags |= THEY_HAVE; | |
332 | } | |
333 | if (!we_knew_they_have) { | |
334 | add_object_array(o, NULL, &have_obj); | |
335 | return 1; | |
336 | } | |
337 | return 0; | |
338 | } | |
339 | ||
340 | static int ok_to_give_up(void) | |
341 | { | |
342 | uint32_t min_generation = GENERATION_NUMBER_ZERO; | |
343 | ||
344 | if (!have_obj.nr) | |
345 | return 0; | |
346 | ||
347 | return can_all_from_reach_with_flag(&want_obj, THEY_HAVE, | |
348 | COMMON_KNOWN, oldest_have, | |
349 | min_generation); | |
350 | } | |
351 | ||
352 | static int get_common_commits(void) | |
353 | { | |
354 | struct object_id oid; | |
355 | char last_hex[GIT_MAX_HEXSZ + 1]; | |
356 | int got_common = 0; | |
357 | int got_other = 0; | |
358 | int sent_ready = 0; | |
359 | ||
360 | save_commit_buffer = 0; | |
361 | ||
362 | for (;;) { | |
363 | char *line = packet_read_line(0, NULL); | |
364 | const char *arg; | |
365 | ||
366 | reset_timeout(); | |
367 | ||
368 | if (!line) { | |
369 | if (multi_ack == 2 && got_common | |
370 | && !got_other && ok_to_give_up()) { | |
371 | sent_ready = 1; | |
372 | packet_write_fmt(1, "ACK %s ready\n", last_hex); | |
373 | } | |
374 | if (have_obj.nr == 0 || multi_ack) | |
375 | packet_write_fmt(1, "NAK\n"); | |
376 | ||
377 | if (no_done && sent_ready) { | |
378 | packet_write_fmt(1, "ACK %s\n", last_hex); | |
379 | return 0; | |
380 | } | |
381 | if (stateless_rpc) | |
382 | exit(0); | |
383 | got_common = 0; | |
384 | got_other = 0; | |
385 | continue; | |
386 | } | |
387 | if (skip_prefix(line, "have ", &arg)) { | |
388 | switch (got_oid(arg, &oid)) { | |
389 | case -1: /* they have what we do not */ | |
390 | got_other = 1; | |
391 | if (multi_ack && ok_to_give_up()) { | |
392 | const char *hex = oid_to_hex(&oid); | |
393 | if (multi_ack == 2) { | |
394 | sent_ready = 1; | |
395 | packet_write_fmt(1, "ACK %s ready\n", hex); | |
396 | } else | |
397 | packet_write_fmt(1, "ACK %s continue\n", hex); | |
398 | } | |
399 | break; | |
400 | default: | |
401 | got_common = 1; | |
402 | oid_to_hex_r(last_hex, &oid); | |
403 | if (multi_ack == 2) | |
404 | packet_write_fmt(1, "ACK %s common\n", last_hex); | |
405 | else if (multi_ack) | |
406 | packet_write_fmt(1, "ACK %s continue\n", last_hex); | |
407 | else if (have_obj.nr == 1) | |
408 | packet_write_fmt(1, "ACK %s\n", last_hex); | |
409 | break; | |
410 | } | |
411 | continue; | |
412 | } | |
413 | if (!strcmp(line, "done")) { | |
414 | if (have_obj.nr > 0) { | |
415 | if (multi_ack) | |
416 | packet_write_fmt(1, "ACK %s\n", last_hex); | |
417 | return 0; | |
418 | } | |
419 | packet_write_fmt(1, "NAK\n"); | |
420 | return -1; | |
421 | } | |
422 | die("git upload-pack: expected SHA1 list, got '%s'", line); | |
423 | } | |
424 | } | |
425 | ||
426 | static int is_our_ref(struct object *o) | |
427 | { | |
428 | int allow_hidden_ref = (allow_unadvertised_object_request & | |
429 | (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1)); | |
430 | return o->flags & ((allow_hidden_ref ? HIDDEN_REF : 0) | OUR_REF); | |
431 | } | |
432 | ||
433 | /* | |
434 | * on successful case, it's up to the caller to close cmd->out | |
435 | */ | |
436 | static int do_reachable_revlist(struct child_process *cmd, | |
437 | struct object_array *src, | |
438 | struct object_array *reachable) | |
439 | { | |
440 | static const char *argv[] = { | |
441 | "rev-list", "--stdin", NULL, | |
442 | }; | |
443 | struct object *o; | |
444 | char namebuf[GIT_MAX_HEXSZ + 2]; /* ^ + hash + LF */ | |
445 | int i; | |
446 | ||
447 | cmd->argv = argv; | |
448 | cmd->git_cmd = 1; | |
449 | cmd->no_stderr = 1; | |
450 | cmd->in = -1; | |
451 | cmd->out = -1; | |
452 | ||
453 | /* | |
454 | * If the next rev-list --stdin encounters an unknown commit, | |
455 | * it terminates, which will cause SIGPIPE in the write loop | |
456 | * below. | |
457 | */ | |
458 | sigchain_push(SIGPIPE, SIG_IGN); | |
459 | ||
460 | if (start_command(cmd)) | |
461 | goto error; | |
462 | ||
463 | namebuf[0] = '^'; | |
464 | namebuf[GIT_SHA1_HEXSZ + 1] = '\n'; | |
465 | for (i = get_max_object_index(); 0 < i; ) { | |
466 | o = get_indexed_object(--i); | |
467 | if (!o) | |
468 | continue; | |
469 | if (reachable && o->type == OBJ_COMMIT) | |
470 | o->flags &= ~TMP_MARK; | |
471 | if (!is_our_ref(o)) | |
472 | continue; | |
473 | memcpy(namebuf + 1, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ); | |
474 | if (write_in_full(cmd->in, namebuf, GIT_SHA1_HEXSZ + 2) < 0) | |
475 | goto error; | |
476 | } | |
477 | namebuf[GIT_SHA1_HEXSZ] = '\n'; | |
478 | for (i = 0; i < src->nr; i++) { | |
479 | o = src->objects[i].item; | |
480 | if (is_our_ref(o)) { | |
481 | if (reachable) | |
482 | add_object_array(o, NULL, reachable); | |
483 | continue; | |
484 | } | |
485 | if (reachable && o->type == OBJ_COMMIT) | |
486 | o->flags |= TMP_MARK; | |
487 | memcpy(namebuf, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ); | |
488 | if (write_in_full(cmd->in, namebuf, GIT_SHA1_HEXSZ + 1) < 0) | |
489 | goto error; | |
490 | } | |
491 | close(cmd->in); | |
492 | cmd->in = -1; | |
493 | sigchain_pop(SIGPIPE); | |
494 | ||
495 | return 0; | |
496 | ||
497 | error: | |
498 | sigchain_pop(SIGPIPE); | |
499 | ||
500 | if (cmd->in >= 0) | |
501 | close(cmd->in); | |
502 | if (cmd->out >= 0) | |
503 | close(cmd->out); | |
504 | return -1; | |
505 | } | |
506 | ||
507 | static int get_reachable_list(struct object_array *src, | |
508 | struct object_array *reachable) | |
509 | { | |
510 | struct child_process cmd = CHILD_PROCESS_INIT; | |
511 | int i; | |
512 | struct object *o; | |
513 | char namebuf[GIT_MAX_HEXSZ + 2]; /* ^ + hash + LF */ | |
514 | const unsigned hexsz = the_hash_algo->hexsz; | |
515 | ||
516 | if (do_reachable_revlist(&cmd, src, reachable) < 0) | |
517 | return -1; | |
518 | ||
519 | while ((i = read_in_full(cmd.out, namebuf, hexsz + 1)) == hexsz + 1) { | |
520 | struct object_id sha1; | |
521 | const char *p; | |
522 | ||
523 | if (parse_oid_hex(namebuf, &sha1, &p) || *p != '\n') | |
524 | break; | |
525 | ||
526 | o = lookup_object(the_repository, sha1.hash); | |
527 | if (o && o->type == OBJ_COMMIT) { | |
528 | o->flags &= ~TMP_MARK; | |
529 | } | |
530 | } | |
531 | for (i = get_max_object_index(); 0 < i; i--) { | |
532 | o = get_indexed_object(i - 1); | |
533 | if (o && o->type == OBJ_COMMIT && | |
534 | (o->flags & TMP_MARK)) { | |
535 | add_object_array(o, NULL, reachable); | |
536 | o->flags &= ~TMP_MARK; | |
537 | } | |
538 | } | |
539 | close(cmd.out); | |
540 | ||
541 | if (finish_command(&cmd)) | |
542 | return -1; | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
547 | static int has_unreachable(struct object_array *src) | |
548 | { | |
549 | struct child_process cmd = CHILD_PROCESS_INIT; | |
550 | char buf[1]; | |
551 | int i; | |
552 | ||
553 | if (do_reachable_revlist(&cmd, src, NULL) < 0) | |
554 | return 1; | |
555 | ||
556 | /* | |
557 | * The commits out of the rev-list are not ancestors of | |
558 | * our ref. | |
559 | */ | |
560 | i = read_in_full(cmd.out, buf, 1); | |
561 | if (i) | |
562 | goto error; | |
563 | close(cmd.out); | |
564 | cmd.out = -1; | |
565 | ||
566 | /* | |
567 | * rev-list may have died by encountering a bad commit | |
568 | * in the history, in which case we do want to bail out | |
569 | * even when it showed no commit. | |
570 | */ | |
571 | if (finish_command(&cmd)) | |
572 | goto error; | |
573 | ||
574 | /* All the non-tip ones are ancestors of what we advertised */ | |
575 | return 0; | |
576 | ||
577 | error: | |
578 | sigchain_pop(SIGPIPE); | |
579 | if (cmd.out >= 0) | |
580 | close(cmd.out); | |
581 | return 1; | |
582 | } | |
583 | ||
584 | static void check_non_tip(void) | |
585 | { | |
586 | int i; | |
587 | ||
588 | /* | |
589 | * In the normal in-process case without | |
590 | * uploadpack.allowReachableSHA1InWant, | |
591 | * non-tip requests can never happen. | |
592 | */ | |
593 | if (!stateless_rpc && !(allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1)) | |
594 | goto error; | |
595 | if (!has_unreachable(&want_obj)) | |
596 | /* All the non-tip ones are ancestors of what we advertised */ | |
597 | return; | |
598 | ||
599 | error: | |
600 | /* Pick one of them (we know there at least is one) */ | |
601 | for (i = 0; i < want_obj.nr; i++) { | |
602 | struct object *o = want_obj.objects[i].item; | |
603 | if (!is_our_ref(o)) | |
604 | die("git upload-pack: not our ref %s", | |
605 | oid_to_hex(&o->oid)); | |
606 | } | |
607 | } | |
608 | ||
609 | static void send_shallow(struct commit_list *result) | |
610 | { | |
611 | while (result) { | |
612 | struct object *object = &result->item->object; | |
613 | if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) { | |
614 | packet_write_fmt(1, "shallow %s", | |
615 | oid_to_hex(&object->oid)); | |
616 | register_shallow(the_repository, &object->oid); | |
617 | shallow_nr++; | |
618 | } | |
619 | result = result->next; | |
620 | } | |
621 | } | |
622 | ||
623 | static void send_unshallow(const struct object_array *shallows) | |
624 | { | |
625 | int i; | |
626 | ||
627 | for (i = 0; i < shallows->nr; i++) { | |
628 | struct object *object = shallows->objects[i].item; | |
629 | if (object->flags & NOT_SHALLOW) { | |
630 | struct commit_list *parents; | |
631 | packet_write_fmt(1, "unshallow %s", | |
632 | oid_to_hex(&object->oid)); | |
633 | object->flags &= ~CLIENT_SHALLOW; | |
634 | /* | |
635 | * We want to _register_ "object" as shallow, but we | |
636 | * also need to traverse object's parents to deepen a | |
637 | * shallow clone. Unregister it for now so we can | |
638 | * parse and add the parents to the want list, then | |
639 | * re-register it. | |
640 | */ | |
641 | unregister_shallow(&object->oid); | |
642 | object->parsed = 0; | |
643 | parse_commit_or_die((struct commit *)object); | |
644 | parents = ((struct commit *)object)->parents; | |
645 | while (parents) { | |
646 | add_object_array(&parents->item->object, | |
647 | NULL, &want_obj); | |
648 | parents = parents->next; | |
649 | } | |
650 | add_object_array(object, NULL, &extra_edge_obj); | |
651 | } | |
652 | /* make sure commit traversal conforms to client */ | |
653 | register_shallow(the_repository, &object->oid); | |
654 | } | |
655 | } | |
656 | ||
657 | static void deepen(int depth, int deepen_relative, | |
658 | struct object_array *shallows) | |
659 | { | |
660 | if (depth == INFINITE_DEPTH && !is_repository_shallow(the_repository)) { | |
661 | int i; | |
662 | ||
663 | for (i = 0; i < shallows->nr; i++) { | |
664 | struct object *object = shallows->objects[i].item; | |
665 | object->flags |= NOT_SHALLOW; | |
666 | } | |
667 | } else if (deepen_relative) { | |
668 | struct object_array reachable_shallows = OBJECT_ARRAY_INIT; | |
669 | struct commit_list *result; | |
670 | ||
671 | get_reachable_list(shallows, &reachable_shallows); | |
672 | result = get_shallow_commits(&reachable_shallows, | |
673 | depth + 1, | |
674 | SHALLOW, NOT_SHALLOW); | |
675 | send_shallow(result); | |
676 | free_commit_list(result); | |
677 | object_array_clear(&reachable_shallows); | |
678 | } else { | |
679 | struct commit_list *result; | |
680 | ||
681 | result = get_shallow_commits(&want_obj, depth, | |
682 | SHALLOW, NOT_SHALLOW); | |
683 | send_shallow(result); | |
684 | free_commit_list(result); | |
685 | } | |
686 | ||
687 | send_unshallow(shallows); | |
688 | } | |
689 | ||
690 | static void deepen_by_rev_list(int ac, const char **av, | |
691 | struct object_array *shallows) | |
692 | { | |
693 | struct commit_list *result; | |
694 | ||
695 | result = get_shallow_commits_by_rev_list(ac, av, SHALLOW, NOT_SHALLOW); | |
696 | send_shallow(result); | |
697 | free_commit_list(result); | |
698 | send_unshallow(shallows); | |
699 | } | |
700 | ||
701 | /* Returns 1 if a shallow list is sent or 0 otherwise */ | |
702 | static int send_shallow_list(int depth, int deepen_rev_list, | |
703 | timestamp_t deepen_since, | |
704 | struct string_list *deepen_not, | |
705 | struct object_array *shallows) | |
706 | { | |
707 | int ret = 0; | |
708 | ||
709 | if (depth > 0 && deepen_rev_list) | |
710 | die("git upload-pack: deepen and deepen-since (or deepen-not) cannot be used together"); | |
711 | if (depth > 0) { | |
712 | deepen(depth, deepen_relative, shallows); | |
713 | ret = 1; | |
714 | } else if (deepen_rev_list) { | |
715 | struct argv_array av = ARGV_ARRAY_INIT; | |
716 | int i; | |
717 | ||
718 | argv_array_push(&av, "rev-list"); | |
719 | if (deepen_since) | |
720 | argv_array_pushf(&av, "--max-age=%"PRItime, deepen_since); | |
721 | if (deepen_not->nr) { | |
722 | argv_array_push(&av, "--not"); | |
723 | for (i = 0; i < deepen_not->nr; i++) { | |
724 | struct string_list_item *s = deepen_not->items + i; | |
725 | argv_array_push(&av, s->string); | |
726 | } | |
727 | argv_array_push(&av, "--not"); | |
728 | } | |
729 | for (i = 0; i < want_obj.nr; i++) { | |
730 | struct object *o = want_obj.objects[i].item; | |
731 | argv_array_push(&av, oid_to_hex(&o->oid)); | |
732 | } | |
733 | deepen_by_rev_list(av.argc, av.argv, shallows); | |
734 | argv_array_clear(&av); | |
735 | ret = 1; | |
736 | } else { | |
737 | if (shallows->nr > 0) { | |
738 | int i; | |
739 | for (i = 0; i < shallows->nr; i++) | |
740 | register_shallow(the_repository, | |
741 | &shallows->objects[i].item->oid); | |
742 | } | |
743 | } | |
744 | ||
745 | shallow_nr += shallows->nr; | |
746 | return ret; | |
747 | } | |
748 | ||
749 | static int process_shallow(const char *line, struct object_array *shallows) | |
750 | { | |
751 | const char *arg; | |
752 | if (skip_prefix(line, "shallow ", &arg)) { | |
753 | struct object_id oid; | |
754 | struct object *object; | |
755 | if (get_oid_hex(arg, &oid)) | |
756 | die("invalid shallow line: %s", line); | |
757 | object = parse_object(the_repository, &oid); | |
758 | if (!object) | |
759 | return 1; | |
760 | if (object->type != OBJ_COMMIT) | |
761 | die("invalid shallow object %s", oid_to_hex(&oid)); | |
762 | if (!(object->flags & CLIENT_SHALLOW)) { | |
763 | object->flags |= CLIENT_SHALLOW; | |
764 | add_object_array(object, NULL, shallows); | |
765 | } | |
766 | return 1; | |
767 | } | |
768 | ||
769 | return 0; | |
770 | } | |
771 | ||
772 | static int process_deepen(const char *line, int *depth) | |
773 | { | |
774 | const char *arg; | |
775 | if (skip_prefix(line, "deepen ", &arg)) { | |
776 | char *end = NULL; | |
777 | *depth = (int)strtol(arg, &end, 0); | |
778 | if (!end || *end || *depth <= 0) | |
779 | die("Invalid deepen: %s", line); | |
780 | return 1; | |
781 | } | |
782 | ||
783 | return 0; | |
784 | } | |
785 | ||
786 | static int process_deepen_since(const char *line, timestamp_t *deepen_since, int *deepen_rev_list) | |
787 | { | |
788 | const char *arg; | |
789 | if (skip_prefix(line, "deepen-since ", &arg)) { | |
790 | char *end = NULL; | |
791 | *deepen_since = parse_timestamp(arg, &end, 0); | |
792 | if (!end || *end || !deepen_since || | |
793 | /* revisions.c's max_age -1 is special */ | |
794 | *deepen_since == -1) | |
795 | die("Invalid deepen-since: %s", line); | |
796 | *deepen_rev_list = 1; | |
797 | return 1; | |
798 | } | |
799 | return 0; | |
800 | } | |
801 | ||
802 | static int process_deepen_not(const char *line, struct string_list *deepen_not, int *deepen_rev_list) | |
803 | { | |
804 | const char *arg; | |
805 | if (skip_prefix(line, "deepen-not ", &arg)) { | |
806 | char *ref = NULL; | |
807 | struct object_id oid; | |
808 | if (expand_ref(arg, strlen(arg), &oid, &ref) != 1) | |
809 | die("git upload-pack: ambiguous deepen-not: %s", line); | |
810 | string_list_append(deepen_not, ref); | |
811 | free(ref); | |
812 | *deepen_rev_list = 1; | |
813 | return 1; | |
814 | } | |
815 | return 0; | |
816 | } | |
817 | ||
818 | static void receive_needs(void) | |
819 | { | |
820 | struct object_array shallows = OBJECT_ARRAY_INIT; | |
821 | struct string_list deepen_not = STRING_LIST_INIT_DUP; | |
822 | int depth = 0; | |
823 | int has_non_tip = 0; | |
824 | timestamp_t deepen_since = 0; | |
825 | int deepen_rev_list = 0; | |
826 | ||
827 | shallow_nr = 0; | |
828 | for (;;) { | |
829 | struct object *o; | |
830 | const char *features; | |
831 | struct object_id oid_buf; | |
832 | char *line = packet_read_line(0, NULL); | |
833 | const char *arg; | |
834 | ||
835 | reset_timeout(); | |
836 | if (!line) | |
837 | break; | |
838 | ||
839 | if (process_shallow(line, &shallows)) | |
840 | continue; | |
841 | if (process_deepen(line, &depth)) | |
842 | continue; | |
843 | if (process_deepen_since(line, &deepen_since, &deepen_rev_list)) | |
844 | continue; | |
845 | if (process_deepen_not(line, &deepen_not, &deepen_rev_list)) | |
846 | continue; | |
847 | ||
848 | if (skip_prefix(line, "filter ", &arg)) { | |
849 | if (!filter_capability_requested) | |
850 | die("git upload-pack: filtering capability not negotiated"); | |
851 | parse_list_objects_filter(&filter_options, arg); | |
852 | continue; | |
853 | } | |
854 | ||
855 | if (!skip_prefix(line, "want ", &arg) || | |
856 | parse_oid_hex(arg, &oid_buf, &features)) | |
857 | die("git upload-pack: protocol error, " | |
858 | "expected to get object ID, not '%s'", line); | |
859 | ||
860 | if (parse_feature_request(features, "deepen-relative")) | |
861 | deepen_relative = 1; | |
862 | if (parse_feature_request(features, "multi_ack_detailed")) | |
863 | multi_ack = 2; | |
864 | else if (parse_feature_request(features, "multi_ack")) | |
865 | multi_ack = 1; | |
866 | if (parse_feature_request(features, "no-done")) | |
867 | no_done = 1; | |
868 | if (parse_feature_request(features, "thin-pack")) | |
869 | use_thin_pack = 1; | |
870 | if (parse_feature_request(features, "ofs-delta")) | |
871 | use_ofs_delta = 1; | |
872 | if (parse_feature_request(features, "side-band-64k")) | |
873 | use_sideband = LARGE_PACKET_MAX; | |
874 | else if (parse_feature_request(features, "side-band")) | |
875 | use_sideband = DEFAULT_PACKET_MAX; | |
876 | if (parse_feature_request(features, "no-progress")) | |
877 | no_progress = 1; | |
878 | if (parse_feature_request(features, "include-tag")) | |
879 | use_include_tag = 1; | |
880 | if (allow_filter && parse_feature_request(features, "filter")) | |
881 | filter_capability_requested = 1; | |
882 | ||
883 | o = parse_object(the_repository, &oid_buf); | |
884 | if (!o) { | |
885 | packet_write_fmt(1, | |
886 | "ERR upload-pack: not our ref %s", | |
887 | oid_to_hex(&oid_buf)); | |
888 | die("git upload-pack: not our ref %s", | |
889 | oid_to_hex(&oid_buf)); | |
890 | } | |
891 | if (!(o->flags & WANTED)) { | |
892 | o->flags |= WANTED; | |
893 | if (!((allow_unadvertised_object_request & ALLOW_ANY_SHA1) == ALLOW_ANY_SHA1 | |
894 | || is_our_ref(o))) | |
895 | has_non_tip = 1; | |
896 | add_object_array(o, NULL, &want_obj); | |
897 | } | |
898 | } | |
899 | ||
900 | /* | |
901 | * We have sent all our refs already, and the other end | |
902 | * should have chosen out of them. When we are operating | |
903 | * in the stateless RPC mode, however, their choice may | |
904 | * have been based on the set of older refs advertised | |
905 | * by another process that handled the initial request. | |
906 | */ | |
907 | if (has_non_tip) | |
908 | check_non_tip(); | |
909 | ||
910 | if (!use_sideband && daemon_mode) | |
911 | no_progress = 1; | |
912 | ||
913 | if (depth == 0 && !deepen_rev_list && shallows.nr == 0) | |
914 | return; | |
915 | ||
916 | if (send_shallow_list(depth, deepen_rev_list, deepen_since, | |
917 | &deepen_not, &shallows)) | |
918 | packet_flush(1); | |
919 | object_array_clear(&shallows); | |
920 | } | |
921 | ||
922 | /* return non-zero if the ref is hidden, otherwise 0 */ | |
923 | static int mark_our_ref(const char *refname, const char *refname_full, | |
924 | const struct object_id *oid) | |
925 | { | |
926 | struct object *o = lookup_unknown_object(oid->hash); | |
927 | ||
928 | if (ref_is_hidden(refname, refname_full)) { | |
929 | o->flags |= HIDDEN_REF; | |
930 | return 1; | |
931 | } | |
932 | o->flags |= OUR_REF; | |
933 | return 0; | |
934 | } | |
935 | ||
936 | static int check_ref(const char *refname_full, const struct object_id *oid, | |
937 | int flag, void *cb_data) | |
938 | { | |
939 | const char *refname = strip_namespace(refname_full); | |
940 | ||
941 | mark_our_ref(refname, refname_full, oid); | |
942 | return 0; | |
943 | } | |
944 | ||
945 | static void format_symref_info(struct strbuf *buf, struct string_list *symref) | |
946 | { | |
947 | struct string_list_item *item; | |
948 | ||
949 | if (!symref->nr) | |
950 | return; | |
951 | for_each_string_list_item(item, symref) | |
952 | strbuf_addf(buf, " symref=%s:%s", item->string, (char *)item->util); | |
953 | } | |
954 | ||
955 | static int send_ref(const char *refname, const struct object_id *oid, | |
956 | int flag, void *cb_data) | |
957 | { | |
958 | static const char *capabilities = "multi_ack thin-pack side-band" | |
959 | " side-band-64k ofs-delta shallow deepen-since deepen-not" | |
960 | " deepen-relative no-progress include-tag multi_ack_detailed"; | |
961 | const char *refname_nons = strip_namespace(refname); | |
962 | struct object_id peeled; | |
963 | ||
964 | if (mark_our_ref(refname_nons, refname, oid)) | |
965 | return 0; | |
966 | ||
967 | if (capabilities) { | |
968 | struct strbuf symref_info = STRBUF_INIT; | |
969 | ||
970 | format_symref_info(&symref_info, cb_data); | |
971 | packet_write_fmt(1, "%s %s%c%s%s%s%s%s%s agent=%s\n", | |
972 | oid_to_hex(oid), refname_nons, | |
973 | 0, capabilities, | |
974 | (allow_unadvertised_object_request & ALLOW_TIP_SHA1) ? | |
975 | " allow-tip-sha1-in-want" : "", | |
976 | (allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1) ? | |
977 | " allow-reachable-sha1-in-want" : "", | |
978 | stateless_rpc ? " no-done" : "", | |
979 | symref_info.buf, | |
980 | allow_filter ? " filter" : "", | |
981 | git_user_agent_sanitized()); | |
982 | strbuf_release(&symref_info); | |
983 | } else { | |
984 | packet_write_fmt(1, "%s %s\n", oid_to_hex(oid), refname_nons); | |
985 | } | |
986 | capabilities = NULL; | |
987 | if (!peel_ref(refname, &peeled)) | |
988 | packet_write_fmt(1, "%s %s^{}\n", oid_to_hex(&peeled), refname_nons); | |
989 | return 0; | |
990 | } | |
991 | ||
992 | static int find_symref(const char *refname, const struct object_id *oid, | |
993 | int flag, void *cb_data) | |
994 | { | |
995 | const char *symref_target; | |
996 | struct string_list_item *item; | |
997 | ||
998 | if ((flag & REF_ISSYMREF) == 0) | |
999 | return 0; | |
1000 | symref_target = resolve_ref_unsafe(refname, 0, NULL, &flag); | |
1001 | if (!symref_target || (flag & REF_ISSYMREF) == 0) | |
1002 | die("'%s' is a symref but it is not?", refname); | |
1003 | item = string_list_append(cb_data, refname); | |
1004 | item->util = xstrdup(symref_target); | |
1005 | return 0; | |
1006 | } | |
1007 | ||
1008 | static int upload_pack_config(const char *var, const char *value, void *unused) | |
1009 | { | |
1010 | if (!strcmp("uploadpack.allowtipsha1inwant", var)) { | |
1011 | if (git_config_bool(var, value)) | |
1012 | allow_unadvertised_object_request |= ALLOW_TIP_SHA1; | |
1013 | else | |
1014 | allow_unadvertised_object_request &= ~ALLOW_TIP_SHA1; | |
1015 | } else if (!strcmp("uploadpack.allowreachablesha1inwant", var)) { | |
1016 | if (git_config_bool(var, value)) | |
1017 | allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1; | |
1018 | else | |
1019 | allow_unadvertised_object_request &= ~ALLOW_REACHABLE_SHA1; | |
1020 | } else if (!strcmp("uploadpack.allowanysha1inwant", var)) { | |
1021 | if (git_config_bool(var, value)) | |
1022 | allow_unadvertised_object_request |= ALLOW_ANY_SHA1; | |
1023 | else | |
1024 | allow_unadvertised_object_request &= ~ALLOW_ANY_SHA1; | |
1025 | } else if (!strcmp("uploadpack.keepalive", var)) { | |
1026 | keepalive = git_config_int(var, value); | |
1027 | if (!keepalive) | |
1028 | keepalive = -1; | |
1029 | } else if (current_config_scope() != CONFIG_SCOPE_REPO) { | |
1030 | if (!strcmp("uploadpack.packobjectshook", var)) | |
1031 | return git_config_string(&pack_objects_hook, var, value); | |
1032 | } else if (!strcmp("uploadpack.allowfilter", var)) { | |
1033 | allow_filter = git_config_bool(var, value); | |
1034 | } else if (!strcmp("uploadpack.allowrefinwant", var)) { | |
1035 | allow_ref_in_want = git_config_bool(var, value); | |
1036 | } | |
1037 | return parse_hide_refs_config(var, value, "uploadpack"); | |
1038 | } | |
1039 | ||
1040 | void upload_pack(struct upload_pack_options *options) | |
1041 | { | |
1042 | struct string_list symref = STRING_LIST_INIT_DUP; | |
1043 | ||
1044 | stateless_rpc = options->stateless_rpc; | |
1045 | timeout = options->timeout; | |
1046 | daemon_mode = options->daemon_mode; | |
1047 | ||
1048 | git_config(upload_pack_config, NULL); | |
1049 | ||
1050 | head_ref_namespaced(find_symref, &symref); | |
1051 | ||
1052 | if (options->advertise_refs || !stateless_rpc) { | |
1053 | reset_timeout(); | |
1054 | head_ref_namespaced(send_ref, &symref); | |
1055 | for_each_namespaced_ref(send_ref, &symref); | |
1056 | advertise_shallow_grafts(1); | |
1057 | packet_flush(1); | |
1058 | } else { | |
1059 | head_ref_namespaced(check_ref, NULL); | |
1060 | for_each_namespaced_ref(check_ref, NULL); | |
1061 | } | |
1062 | string_list_clear(&symref, 1); | |
1063 | if (options->advertise_refs) | |
1064 | return; | |
1065 | ||
1066 | receive_needs(); | |
1067 | if (want_obj.nr) { | |
1068 | get_common_commits(); | |
1069 | create_pack_file(); | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | struct upload_pack_data { | |
1074 | struct object_array wants; | |
1075 | struct string_list wanted_refs; | |
1076 | struct oid_array haves; | |
1077 | ||
1078 | struct object_array shallows; | |
1079 | struct string_list deepen_not; | |
1080 | int depth; | |
1081 | timestamp_t deepen_since; | |
1082 | int deepen_rev_list; | |
1083 | int deepen_relative; | |
1084 | ||
1085 | unsigned stateless_rpc : 1; | |
1086 | ||
1087 | unsigned use_thin_pack : 1; | |
1088 | unsigned use_ofs_delta : 1; | |
1089 | unsigned no_progress : 1; | |
1090 | unsigned use_include_tag : 1; | |
1091 | unsigned done : 1; | |
1092 | }; | |
1093 | ||
1094 | static void upload_pack_data_init(struct upload_pack_data *data) | |
1095 | { | |
1096 | struct object_array wants = OBJECT_ARRAY_INIT; | |
1097 | struct string_list wanted_refs = STRING_LIST_INIT_DUP; | |
1098 | struct oid_array haves = OID_ARRAY_INIT; | |
1099 | struct object_array shallows = OBJECT_ARRAY_INIT; | |
1100 | struct string_list deepen_not = STRING_LIST_INIT_DUP; | |
1101 | ||
1102 | memset(data, 0, sizeof(*data)); | |
1103 | data->wants = wants; | |
1104 | data->wanted_refs = wanted_refs; | |
1105 | data->haves = haves; | |
1106 | data->shallows = shallows; | |
1107 | data->deepen_not = deepen_not; | |
1108 | } | |
1109 | ||
1110 | static void upload_pack_data_clear(struct upload_pack_data *data) | |
1111 | { | |
1112 | object_array_clear(&data->wants); | |
1113 | string_list_clear(&data->wanted_refs, 1); | |
1114 | oid_array_clear(&data->haves); | |
1115 | object_array_clear(&data->shallows); | |
1116 | string_list_clear(&data->deepen_not, 0); | |
1117 | } | |
1118 | ||
1119 | static int parse_want(const char *line) | |
1120 | { | |
1121 | const char *arg; | |
1122 | if (skip_prefix(line, "want ", &arg)) { | |
1123 | struct object_id oid; | |
1124 | struct object *o; | |
1125 | ||
1126 | if (get_oid_hex(arg, &oid)) | |
1127 | die("git upload-pack: protocol error, " | |
1128 | "expected to get oid, not '%s'", line); | |
1129 | ||
1130 | o = parse_object(the_repository, &oid); | |
1131 | if (!o) { | |
1132 | packet_write_fmt(1, | |
1133 | "ERR upload-pack: not our ref %s", | |
1134 | oid_to_hex(&oid)); | |
1135 | die("git upload-pack: not our ref %s", | |
1136 | oid_to_hex(&oid)); | |
1137 | } | |
1138 | ||
1139 | if (!(o->flags & WANTED)) { | |
1140 | o->flags |= WANTED; | |
1141 | add_object_array(o, NULL, &want_obj); | |
1142 | } | |
1143 | ||
1144 | return 1; | |
1145 | } | |
1146 | ||
1147 | return 0; | |
1148 | } | |
1149 | ||
1150 | static int parse_want_ref(const char *line, struct string_list *wanted_refs) | |
1151 | { | |
1152 | const char *arg; | |
1153 | if (skip_prefix(line, "want-ref ", &arg)) { | |
1154 | struct object_id oid; | |
1155 | struct string_list_item *item; | |
1156 | struct object *o; | |
1157 | ||
1158 | if (read_ref(arg, &oid)) { | |
1159 | packet_write_fmt(1, "ERR unknown ref %s", arg); | |
1160 | die("unknown ref %s", arg); | |
1161 | } | |
1162 | ||
1163 | item = string_list_append(wanted_refs, arg); | |
1164 | item->util = oiddup(&oid); | |
1165 | ||
1166 | o = parse_object_or_die(&oid, arg); | |
1167 | if (!(o->flags & WANTED)) { | |
1168 | o->flags |= WANTED; | |
1169 | add_object_array(o, NULL, &want_obj); | |
1170 | } | |
1171 | ||
1172 | return 1; | |
1173 | } | |
1174 | ||
1175 | return 0; | |
1176 | } | |
1177 | ||
1178 | static int parse_have(const char *line, struct oid_array *haves) | |
1179 | { | |
1180 | const char *arg; | |
1181 | if (skip_prefix(line, "have ", &arg)) { | |
1182 | struct object_id oid; | |
1183 | ||
1184 | if (get_oid_hex(arg, &oid)) | |
1185 | die("git upload-pack: expected SHA1 object, got '%s'", arg); | |
1186 | oid_array_append(haves, &oid); | |
1187 | return 1; | |
1188 | } | |
1189 | ||
1190 | return 0; | |
1191 | } | |
1192 | ||
1193 | static void process_args(struct packet_reader *request, | |
1194 | struct upload_pack_data *data) | |
1195 | { | |
1196 | while (packet_reader_read(request) != PACKET_READ_FLUSH) { | |
1197 | const char *arg = request->line; | |
1198 | const char *p; | |
1199 | ||
1200 | /* process want */ | |
1201 | if (parse_want(arg)) | |
1202 | continue; | |
1203 | if (allow_ref_in_want && parse_want_ref(arg, &data->wanted_refs)) | |
1204 | continue; | |
1205 | /* process have line */ | |
1206 | if (parse_have(arg, &data->haves)) | |
1207 | continue; | |
1208 | ||
1209 | /* process args like thin-pack */ | |
1210 | if (!strcmp(arg, "thin-pack")) { | |
1211 | use_thin_pack = 1; | |
1212 | continue; | |
1213 | } | |
1214 | if (!strcmp(arg, "ofs-delta")) { | |
1215 | use_ofs_delta = 1; | |
1216 | continue; | |
1217 | } | |
1218 | if (!strcmp(arg, "no-progress")) { | |
1219 | no_progress = 1; | |
1220 | continue; | |
1221 | } | |
1222 | if (!strcmp(arg, "include-tag")) { | |
1223 | use_include_tag = 1; | |
1224 | continue; | |
1225 | } | |
1226 | if (!strcmp(arg, "done")) { | |
1227 | data->done = 1; | |
1228 | continue; | |
1229 | } | |
1230 | ||
1231 | /* Shallow related arguments */ | |
1232 | if (process_shallow(arg, &data->shallows)) | |
1233 | continue; | |
1234 | if (process_deepen(arg, &data->depth)) | |
1235 | continue; | |
1236 | if (process_deepen_since(arg, &data->deepen_since, | |
1237 | &data->deepen_rev_list)) | |
1238 | continue; | |
1239 | if (process_deepen_not(arg, &data->deepen_not, | |
1240 | &data->deepen_rev_list)) | |
1241 | continue; | |
1242 | if (!strcmp(arg, "deepen-relative")) { | |
1243 | data->deepen_relative = 1; | |
1244 | continue; | |
1245 | } | |
1246 | ||
1247 | if (allow_filter && skip_prefix(arg, "filter ", &p)) { | |
1248 | parse_list_objects_filter(&filter_options, p); | |
1249 | continue; | |
1250 | } | |
1251 | ||
1252 | /* ignore unknown lines maybe? */ | |
1253 | die("unexpected line: '%s'", arg); | |
1254 | } | |
1255 | } | |
1256 | ||
1257 | static int process_haves(struct oid_array *haves, struct oid_array *common) | |
1258 | { | |
1259 | int i; | |
1260 | ||
1261 | /* Process haves */ | |
1262 | for (i = 0; i < haves->nr; i++) { | |
1263 | const struct object_id *oid = &haves->oid[i]; | |
1264 | struct object *o; | |
1265 | int we_knew_they_have = 0; | |
1266 | ||
1267 | if (!has_object_file(oid)) | |
1268 | continue; | |
1269 | ||
1270 | oid_array_append(common, oid); | |
1271 | ||
1272 | o = parse_object(the_repository, oid); | |
1273 | if (!o) | |
1274 | die("oops (%s)", oid_to_hex(oid)); | |
1275 | if (o->type == OBJ_COMMIT) { | |
1276 | struct commit_list *parents; | |
1277 | struct commit *commit = (struct commit *)o; | |
1278 | if (o->flags & THEY_HAVE) | |
1279 | we_knew_they_have = 1; | |
1280 | else | |
1281 | o->flags |= THEY_HAVE; | |
1282 | if (!oldest_have || (commit->date < oldest_have)) | |
1283 | oldest_have = commit->date; | |
1284 | for (parents = commit->parents; | |
1285 | parents; | |
1286 | parents = parents->next) | |
1287 | parents->item->object.flags |= THEY_HAVE; | |
1288 | } | |
1289 | if (!we_knew_they_have) | |
1290 | add_object_array(o, NULL, &have_obj); | |
1291 | } | |
1292 | ||
1293 | return 0; | |
1294 | } | |
1295 | ||
1296 | static int send_acks(struct oid_array *acks, struct strbuf *response) | |
1297 | { | |
1298 | int i; | |
1299 | ||
1300 | packet_buf_write(response, "acknowledgments\n"); | |
1301 | ||
1302 | /* Send Acks */ | |
1303 | if (!acks->nr) | |
1304 | packet_buf_write(response, "NAK\n"); | |
1305 | ||
1306 | for (i = 0; i < acks->nr; i++) { | |
1307 | packet_buf_write(response, "ACK %s\n", | |
1308 | oid_to_hex(&acks->oid[i])); | |
1309 | } | |
1310 | ||
1311 | if (ok_to_give_up()) { | |
1312 | /* Send Ready */ | |
1313 | packet_buf_write(response, "ready\n"); | |
1314 | return 1; | |
1315 | } | |
1316 | ||
1317 | return 0; | |
1318 | } | |
1319 | ||
1320 | static int process_haves_and_send_acks(struct upload_pack_data *data) | |
1321 | { | |
1322 | struct oid_array common = OID_ARRAY_INIT; | |
1323 | struct strbuf response = STRBUF_INIT; | |
1324 | int ret = 0; | |
1325 | ||
1326 | process_haves(&data->haves, &common); | |
1327 | if (data->done) { | |
1328 | ret = 1; | |
1329 | } else if (send_acks(&common, &response)) { | |
1330 | packet_buf_delim(&response); | |
1331 | ret = 1; | |
1332 | } else { | |
1333 | /* Add Flush */ | |
1334 | packet_buf_flush(&response); | |
1335 | ret = 0; | |
1336 | } | |
1337 | ||
1338 | /* Send response */ | |
1339 | write_or_die(1, response.buf, response.len); | |
1340 | strbuf_release(&response); | |
1341 | ||
1342 | oid_array_clear(&data->haves); | |
1343 | oid_array_clear(&common); | |
1344 | return ret; | |
1345 | } | |
1346 | ||
1347 | static void send_wanted_ref_info(struct upload_pack_data *data) | |
1348 | { | |
1349 | const struct string_list_item *item; | |
1350 | ||
1351 | if (!data->wanted_refs.nr) | |
1352 | return; | |
1353 | ||
1354 | packet_write_fmt(1, "wanted-refs\n"); | |
1355 | ||
1356 | for_each_string_list_item(item, &data->wanted_refs) { | |
1357 | packet_write_fmt(1, "%s %s\n", | |
1358 | oid_to_hex(item->util), | |
1359 | item->string); | |
1360 | } | |
1361 | ||
1362 | packet_delim(1); | |
1363 | } | |
1364 | ||
1365 | static void send_shallow_info(struct upload_pack_data *data) | |
1366 | { | |
1367 | /* No shallow info needs to be sent */ | |
1368 | if (!data->depth && !data->deepen_rev_list && !data->shallows.nr && | |
1369 | !is_repository_shallow(the_repository)) | |
1370 | return; | |
1371 | ||
1372 | packet_write_fmt(1, "shallow-info\n"); | |
1373 | ||
1374 | if (!send_shallow_list(data->depth, data->deepen_rev_list, | |
1375 | data->deepen_since, &data->deepen_not, | |
1376 | &data->shallows) && | |
1377 | is_repository_shallow(the_repository)) | |
1378 | deepen(INFINITE_DEPTH, data->deepen_relative, &data->shallows); | |
1379 | ||
1380 | packet_delim(1); | |
1381 | } | |
1382 | ||
1383 | enum fetch_state { | |
1384 | FETCH_PROCESS_ARGS = 0, | |
1385 | FETCH_SEND_ACKS, | |
1386 | FETCH_SEND_PACK, | |
1387 | FETCH_DONE, | |
1388 | }; | |
1389 | ||
1390 | int upload_pack_v2(struct repository *r, struct argv_array *keys, | |
1391 | struct packet_reader *request) | |
1392 | { | |
1393 | enum fetch_state state = FETCH_PROCESS_ARGS; | |
1394 | struct upload_pack_data data; | |
1395 | ||
1396 | git_config(upload_pack_config, NULL); | |
1397 | ||
1398 | upload_pack_data_init(&data); | |
1399 | use_sideband = LARGE_PACKET_MAX; | |
1400 | ||
1401 | while (state != FETCH_DONE) { | |
1402 | switch (state) { | |
1403 | case FETCH_PROCESS_ARGS: | |
1404 | process_args(request, &data); | |
1405 | ||
1406 | if (!want_obj.nr) { | |
1407 | /* | |
1408 | * Request didn't contain any 'want' lines, | |
1409 | * guess they didn't want anything. | |
1410 | */ | |
1411 | state = FETCH_DONE; | |
1412 | } else if (data.haves.nr) { | |
1413 | /* | |
1414 | * Request had 'have' lines, so lets ACK them. | |
1415 | */ | |
1416 | state = FETCH_SEND_ACKS; | |
1417 | } else { | |
1418 | /* | |
1419 | * Request had 'want's but no 'have's so we can | |
1420 | * immedietly go to construct and send a pack. | |
1421 | */ | |
1422 | state = FETCH_SEND_PACK; | |
1423 | } | |
1424 | break; | |
1425 | case FETCH_SEND_ACKS: | |
1426 | if (process_haves_and_send_acks(&data)) | |
1427 | state = FETCH_SEND_PACK; | |
1428 | else | |
1429 | state = FETCH_DONE; | |
1430 | break; | |
1431 | case FETCH_SEND_PACK: | |
1432 | send_wanted_ref_info(&data); | |
1433 | send_shallow_info(&data); | |
1434 | ||
1435 | packet_write_fmt(1, "packfile\n"); | |
1436 | create_pack_file(); | |
1437 | state = FETCH_DONE; | |
1438 | break; | |
1439 | case FETCH_DONE: | |
1440 | continue; | |
1441 | } | |
1442 | } | |
1443 | ||
1444 | upload_pack_data_clear(&data); | |
1445 | return 0; | |
1446 | } | |
1447 | ||
1448 | int upload_pack_advertise(struct repository *r, | |
1449 | struct strbuf *value) | |
1450 | { | |
1451 | if (value) { | |
1452 | int allow_filter_value; | |
1453 | int allow_ref_in_want; | |
1454 | ||
1455 | strbuf_addstr(value, "shallow"); | |
1456 | ||
1457 | if (!repo_config_get_bool(the_repository, | |
1458 | "uploadpack.allowfilter", | |
1459 | &allow_filter_value) && | |
1460 | allow_filter_value) | |
1461 | strbuf_addstr(value, " filter"); | |
1462 | ||
1463 | if (!repo_config_get_bool(the_repository, | |
1464 | "uploadpack.allowrefinwant", | |
1465 | &allow_ref_in_want) && | |
1466 | allow_ref_in_want) | |
1467 | strbuf_addstr(value, " ref-in-want"); | |
1468 | } | |
1469 | ||
1470 | return 1; | |
1471 | } |