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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-graph.h" | |
28 | #include "commit-reach.h" | |
29 | ||
30 | /* Remember to update object flag allocation in object.h */ | |
31 | #define THEY_HAVE (1u << 11) | |
32 | #define OUR_REF (1u << 12) | |
33 | #define WANTED (1u << 13) | |
34 | #define COMMON_KNOWN (1u << 14) | |
35 | ||
36 | #define SHALLOW (1u << 16) | |
37 | #define NOT_SHALLOW (1u << 17) | |
38 | #define CLIENT_SHALLOW (1u << 18) | |
39 | #define HIDDEN_REF (1u << 19) | |
40 | ||
41 | static timestamp_t oldest_have; | |
42 | ||
43 | static int deepen_relative; | |
44 | static int multi_ack; | |
45 | static int no_done; | |
46 | static int use_thin_pack, use_ofs_delta, use_include_tag; | |
47 | static int no_progress, daemon_mode; | |
48 | /* Allow specifying sha1 if it is a ref tip. */ | |
49 | #define ALLOW_TIP_SHA1 01 | |
50 | /* Allow request of a sha1 if it is reachable from a ref (possibly hidden ref). */ | |
51 | #define ALLOW_REACHABLE_SHA1 02 | |
52 | /* Allow request of any sha1. Implies ALLOW_TIP_SHA1 and ALLOW_REACHABLE_SHA1. */ | |
53 | #define ALLOW_ANY_SHA1 07 | |
54 | static unsigned int allow_unadvertised_object_request; | |
55 | static int shallow_nr; | |
56 | static struct object_array have_obj; | |
57 | static struct object_array want_obj; | |
58 | static struct object_array extra_edge_obj; | |
59 | static unsigned int timeout; | |
60 | static int keepalive = 5; | |
61 | /* 0 for no sideband, | |
62 | * otherwise maximum packet size (up to 65520 bytes). | |
63 | */ | |
64 | static int use_sideband; | |
65 | static int stateless_rpc; | |
66 | static const char *pack_objects_hook; | |
67 | ||
68 | static int filter_capability_requested; | |
69 | static int allow_filter; | |
70 | static int allow_ref_in_want; | |
71 | static struct list_objects_filter_options filter_options; | |
72 | ||
73 | static void reset_timeout(void) | |
74 | { | |
75 | alarm(timeout); | |
76 | } | |
77 | ||
78 | static void send_client_data(int fd, const char *data, ssize_t sz) | |
79 | { | |
80 | if (use_sideband) { | |
81 | send_sideband(1, fd, data, sz, use_sideband); | |
82 | return; | |
83 | } | |
84 | if (fd == 3) | |
85 | /* emergency quit */ | |
86 | fd = 2; | |
87 | if (fd == 2) { | |
88 | /* XXX: are we happy to lose stuff here? */ | |
89 | xwrite(fd, data, sz); | |
90 | return; | |
91 | } | |
92 | write_or_die(fd, data, sz); | |
93 | } | |
94 | ||
95 | static int write_one_shallow(const struct commit_graft *graft, void *cb_data) | |
96 | { | |
97 | FILE *fp = cb_data; | |
98 | if (graft->nr_parent == -1) | |
99 | fprintf(fp, "--shallow %s\n", oid_to_hex(&graft->oid)); | |
100 | return 0; | |
101 | } | |
102 | ||
103 | static void create_pack_file(void) | |
104 | { | |
105 | struct child_process pack_objects = CHILD_PROCESS_INIT; | |
106 | char data[8193], progress[128]; | |
107 | char abort_msg[] = "aborting due to possible repository " | |
108 | "corruption on the remote side."; | |
109 | int buffered = -1; | |
110 | ssize_t sz; | |
111 | int i; | |
112 | FILE *pipe_fd; | |
113 | ||
114 | if (!pack_objects_hook) | |
115 | pack_objects.git_cmd = 1; | |
116 | else { | |
117 | argv_array_push(&pack_objects.args, pack_objects_hook); | |
118 | argv_array_push(&pack_objects.args, "git"); | |
119 | pack_objects.use_shell = 1; | |
120 | } | |
121 | ||
122 | if (shallow_nr) { | |
123 | argv_array_push(&pack_objects.args, "--shallow-file"); | |
124 | argv_array_push(&pack_objects.args, ""); | |
125 | } | |
126 | argv_array_push(&pack_objects.args, "pack-objects"); | |
127 | argv_array_push(&pack_objects.args, "--revs"); | |
128 | if (use_thin_pack) | |
129 | argv_array_push(&pack_objects.args, "--thin"); | |
130 | ||
131 | argv_array_push(&pack_objects.args, "--stdout"); | |
132 | if (shallow_nr) | |
133 | argv_array_push(&pack_objects.args, "--shallow"); | |
134 | if (!no_progress) | |
135 | argv_array_push(&pack_objects.args, "--progress"); | |
136 | if (use_ofs_delta) | |
137 | argv_array_push(&pack_objects.args, "--delta-base-offset"); | |
138 | if (use_include_tag) | |
139 | argv_array_push(&pack_objects.args, "--include-tag"); | |
140 | if (filter_options.filter_spec) { | |
141 | if (pack_objects.use_shell) { | |
142 | struct strbuf buf = STRBUF_INIT; | |
143 | sq_quote_buf(&buf, filter_options.filter_spec); | |
144 | argv_array_pushf(&pack_objects.args, "--filter=%s", buf.buf); | |
145 | strbuf_release(&buf); | |
146 | } else { | |
147 | argv_array_pushf(&pack_objects.args, "--filter=%s", | |
148 | filter_options.filter_spec); | |
149 | } | |
150 | } | |
151 | ||
152 | pack_objects.in = -1; | |
153 | pack_objects.out = -1; | |
154 | pack_objects.err = -1; | |
155 | ||
156 | if (start_command(&pack_objects)) | |
157 | die("git upload-pack: unable to fork git-pack-objects"); | |
158 | ||
159 | pipe_fd = xfdopen(pack_objects.in, "w"); | |
160 | ||
161 | if (shallow_nr) | |
162 | for_each_commit_graft(write_one_shallow, pipe_fd); | |
163 | ||
164 | for (i = 0; i < want_obj.nr; i++) | |
165 | fprintf(pipe_fd, "%s\n", | |
166 | oid_to_hex(&want_obj.objects[i].item->oid)); | |
167 | fprintf(pipe_fd, "--not\n"); | |
168 | for (i = 0; i < have_obj.nr; i++) | |
169 | fprintf(pipe_fd, "%s\n", | |
170 | oid_to_hex(&have_obj.objects[i].item->oid)); | |
171 | for (i = 0; i < extra_edge_obj.nr; i++) | |
172 | fprintf(pipe_fd, "%s\n", | |
173 | oid_to_hex(&extra_edge_obj.objects[i].item->oid)); | |
174 | fprintf(pipe_fd, "\n"); | |
175 | fflush(pipe_fd); | |
176 | fclose(pipe_fd); | |
177 | ||
178 | /* We read from pack_objects.err to capture stderr output for | |
179 | * progress bar, and pack_objects.out to capture the pack data. | |
180 | */ | |
181 | ||
182 | while (1) { | |
183 | struct pollfd pfd[2]; | |
184 | int pe, pu, pollsize; | |
185 | int ret; | |
186 | ||
187 | reset_timeout(); | |
188 | ||
189 | pollsize = 0; | |
190 | pe = pu = -1; | |
191 | ||
192 | if (0 <= pack_objects.out) { | |
193 | pfd[pollsize].fd = pack_objects.out; | |
194 | pfd[pollsize].events = POLLIN; | |
195 | pu = pollsize; | |
196 | pollsize++; | |
197 | } | |
198 | if (0 <= pack_objects.err) { | |
199 | pfd[pollsize].fd = pack_objects.err; | |
200 | pfd[pollsize].events = POLLIN; | |
201 | pe = pollsize; | |
202 | pollsize++; | |
203 | } | |
204 | ||
205 | if (!pollsize) | |
206 | break; | |
207 | ||
208 | ret = poll(pfd, pollsize, | |
209 | keepalive < 0 ? -1 : 1000 * keepalive); | |
210 | ||
211 | if (ret < 0) { | |
212 | if (errno != EINTR) { | |
213 | error_errno("poll failed, resuming"); | |
214 | sleep(1); | |
215 | } | |
216 | continue; | |
217 | } | |
218 | if (0 <= pe && (pfd[pe].revents & (POLLIN|POLLHUP))) { | |
219 | /* Status ready; we ship that in the side-band | |
220 | * or dump to the standard error. | |
221 | */ | |
222 | sz = xread(pack_objects.err, progress, | |
223 | sizeof(progress)); | |
224 | if (0 < sz) | |
225 | send_client_data(2, progress, sz); | |
226 | else if (sz == 0) { | |
227 | close(pack_objects.err); | |
228 | pack_objects.err = -1; | |
229 | } | |
230 | else | |
231 | goto fail; | |
232 | /* give priority to status messages */ | |
233 | continue; | |
234 | } | |
235 | if (0 <= pu && (pfd[pu].revents & (POLLIN|POLLHUP))) { | |
236 | /* Data ready; we keep the last byte to ourselves | |
237 | * in case we detect broken rev-list, so that we | |
238 | * can leave the stream corrupted. This is | |
239 | * unfortunate -- unpack-objects would happily | |
240 | * accept a valid packdata with trailing garbage, | |
241 | * so appending garbage after we pass all the | |
242 | * pack data is not good enough to signal | |
243 | * breakage to downstream. | |
244 | */ | |
245 | char *cp = data; | |
246 | ssize_t outsz = 0; | |
247 | if (0 <= buffered) { | |
248 | *cp++ = buffered; | |
249 | outsz++; | |
250 | } | |
251 | sz = xread(pack_objects.out, cp, | |
252 | sizeof(data) - outsz); | |
253 | if (0 < sz) | |
254 | ; | |
255 | else if (sz == 0) { | |
256 | close(pack_objects.out); | |
257 | pack_objects.out = -1; | |
258 | } | |
259 | else | |
260 | goto fail; | |
261 | sz += outsz; | |
262 | if (1 < sz) { | |
263 | buffered = data[sz-1] & 0xFF; | |
264 | sz--; | |
265 | } | |
266 | else | |
267 | buffered = -1; | |
268 | send_client_data(1, data, sz); | |
269 | } | |
270 | ||
271 | /* | |
272 | * We hit the keepalive timeout without saying anything; send | |
273 | * an empty message on the data sideband just to let the other | |
274 | * side know we're still working on it, but don't have any data | |
275 | * yet. | |
276 | * | |
277 | * If we don't have a sideband channel, there's no room in the | |
278 | * protocol to say anything, so those clients are just out of | |
279 | * luck. | |
280 | */ | |
281 | if (!ret && use_sideband) { | |
282 | static const char buf[] = "0005\1"; | |
283 | write_or_die(1, buf, 5); | |
284 | } | |
285 | } | |
286 | ||
287 | if (finish_command(&pack_objects)) { | |
288 | error("git upload-pack: git-pack-objects died with error."); | |
289 | goto fail; | |
290 | } | |
291 | ||
292 | /* flush the data */ | |
293 | if (0 <= buffered) { | |
294 | data[0] = buffered; | |
295 | send_client_data(1, data, 1); | |
296 | fprintf(stderr, "flushed.\n"); | |
297 | } | |
298 | if (use_sideband) | |
299 | packet_flush(1); | |
300 | return; | |
301 | ||
302 | fail: | |
303 | send_client_data(3, abort_msg, sizeof(abort_msg)); | |
304 | die("git upload-pack: %s", abort_msg); | |
305 | } | |
306 | ||
307 | static int got_oid(const char *hex, struct object_id *oid) | |
308 | { | |
309 | struct object *o; | |
310 | int we_knew_they_have = 0; | |
311 | ||
312 | if (get_oid_hex(hex, oid)) | |
313 | die("git upload-pack: expected SHA1 object, got '%s'", hex); | |
314 | if (!has_object_file(oid)) | |
315 | return -1; | |
316 | ||
317 | o = parse_object(the_repository, oid); | |
318 | if (!o) | |
319 | die("oops (%s)", oid_to_hex(oid)); | |
320 | if (o->type == OBJ_COMMIT) { | |
321 | struct commit_list *parents; | |
322 | struct commit *commit = (struct commit *)o; | |
323 | if (o->flags & THEY_HAVE) | |
324 | we_knew_they_have = 1; | |
325 | else | |
326 | o->flags |= THEY_HAVE; | |
327 | if (!oldest_have || (commit->date < oldest_have)) | |
328 | oldest_have = commit->date; | |
329 | for (parents = commit->parents; | |
330 | parents; | |
331 | parents = parents->next) | |
332 | parents->item->object.flags |= THEY_HAVE; | |
333 | } | |
334 | if (!we_knew_they_have) { | |
335 | add_object_array(o, NULL, &have_obj); | |
336 | return 1; | |
337 | } | |
338 | return 0; | |
339 | } | |
340 | ||
341 | static int ok_to_give_up(void) | |
342 | { | |
343 | uint32_t min_generation = GENERATION_NUMBER_ZERO; | |
344 | ||
345 | if (!have_obj.nr) | |
346 | return 0; | |
347 | ||
348 | return can_all_from_reach_with_flag(&want_obj, THEY_HAVE, | |
349 | COMMON_KNOWN, oldest_have, | |
350 | min_generation); | |
351 | } | |
352 | ||
353 | static int get_common_commits(void) | |
354 | { | |
355 | struct object_id oid; | |
356 | char last_hex[GIT_MAX_HEXSZ + 1]; | |
357 | int got_common = 0; | |
358 | int got_other = 0; | |
359 | int sent_ready = 0; | |
360 | ||
361 | save_commit_buffer = 0; | |
362 | ||
363 | for (;;) { | |
364 | char *line = packet_read_line(0, NULL); | |
365 | const char *arg; | |
366 | ||
367 | reset_timeout(); | |
368 | ||
369 | if (!line) { | |
370 | if (multi_ack == 2 && got_common | |
371 | && !got_other && ok_to_give_up()) { | |
372 | sent_ready = 1; | |
373 | packet_write_fmt(1, "ACK %s ready\n", last_hex); | |
374 | } | |
375 | if (have_obj.nr == 0 || multi_ack) | |
376 | packet_write_fmt(1, "NAK\n"); | |
377 | ||
378 | if (no_done && sent_ready) { | |
379 | packet_write_fmt(1, "ACK %s\n", last_hex); | |
380 | return 0; | |
381 | } | |
382 | if (stateless_rpc) | |
383 | exit(0); | |
384 | got_common = 0; | |
385 | got_other = 0; | |
386 | continue; | |
387 | } | |
388 | if (skip_prefix(line, "have ", &arg)) { | |
389 | switch (got_oid(arg, &oid)) { | |
390 | case -1: /* they have what we do not */ | |
391 | got_other = 1; | |
392 | if (multi_ack && ok_to_give_up()) { | |
393 | const char *hex = oid_to_hex(&oid); | |
394 | if (multi_ack == 2) { | |
395 | sent_ready = 1; | |
396 | packet_write_fmt(1, "ACK %s ready\n", hex); | |
397 | } else | |
398 | packet_write_fmt(1, "ACK %s continue\n", hex); | |
399 | } | |
400 | break; | |
401 | default: | |
402 | got_common = 1; | |
403 | oid_to_hex_r(last_hex, &oid); | |
404 | if (multi_ack == 2) | |
405 | packet_write_fmt(1, "ACK %s common\n", last_hex); | |
406 | else if (multi_ack) | |
407 | packet_write_fmt(1, "ACK %s continue\n", last_hex); | |
408 | else if (have_obj.nr == 1) | |
409 | packet_write_fmt(1, "ACK %s\n", last_hex); | |
410 | break; | |
411 | } | |
412 | continue; | |
413 | } | |
414 | if (!strcmp(line, "done")) { | |
415 | if (have_obj.nr > 0) { | |
416 | if (multi_ack) | |
417 | packet_write_fmt(1, "ACK %s\n", last_hex); | |
418 | return 0; | |
419 | } | |
420 | packet_write_fmt(1, "NAK\n"); | |
421 | return -1; | |
422 | } | |
423 | die("git upload-pack: expected SHA1 list, got '%s'", line); | |
424 | } | |
425 | } | |
426 | ||
427 | static int is_our_ref(struct object *o) | |
428 | { | |
429 | int allow_hidden_ref = (allow_unadvertised_object_request & | |
430 | (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1)); | |
431 | return o->flags & ((allow_hidden_ref ? HIDDEN_REF : 0) | OUR_REF); | |
432 | } | |
433 | ||
434 | /* | |
435 | * on successful case, it's up to the caller to close cmd->out | |
436 | */ | |
437 | static int do_reachable_revlist(struct child_process *cmd, | |
438 | struct object_array *src, | |
439 | struct object_array *reachable) | |
440 | { | |
441 | static const char *argv[] = { | |
442 | "rev-list", "--stdin", NULL, | |
443 | }; | |
444 | struct object *o; | |
445 | char namebuf[GIT_MAX_HEXSZ + 2]; /* ^ + hash + LF */ | |
446 | int i; | |
447 | ||
448 | cmd->argv = argv; | |
449 | cmd->git_cmd = 1; | |
450 | cmd->no_stderr = 1; | |
451 | cmd->in = -1; | |
452 | cmd->out = -1; | |
453 | ||
454 | /* | |
455 | * If the next rev-list --stdin encounters an unknown commit, | |
456 | * it terminates, which will cause SIGPIPE in the write loop | |
457 | * below. | |
458 | */ | |
459 | sigchain_push(SIGPIPE, SIG_IGN); | |
460 | ||
461 | if (start_command(cmd)) | |
462 | goto error; | |
463 | ||
464 | namebuf[0] = '^'; | |
465 | namebuf[GIT_SHA1_HEXSZ + 1] = '\n'; | |
466 | for (i = get_max_object_index(); 0 < i; ) { | |
467 | o = get_indexed_object(--i); | |
468 | if (!o) | |
469 | continue; | |
470 | if (reachable && o->type == OBJ_COMMIT) | |
471 | o->flags &= ~TMP_MARK; | |
472 | if (!is_our_ref(o)) | |
473 | continue; | |
474 | memcpy(namebuf + 1, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ); | |
475 | if (write_in_full(cmd->in, namebuf, GIT_SHA1_HEXSZ + 2) < 0) | |
476 | goto error; | |
477 | } | |
478 | namebuf[GIT_SHA1_HEXSZ] = '\n'; | |
479 | for (i = 0; i < src->nr; i++) { | |
480 | o = src->objects[i].item; | |
481 | if (is_our_ref(o)) { | |
482 | if (reachable) | |
483 | add_object_array(o, NULL, reachable); | |
484 | continue; | |
485 | } | |
486 | if (reachable && o->type == OBJ_COMMIT) | |
487 | o->flags |= TMP_MARK; | |
488 | memcpy(namebuf, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ); | |
489 | if (write_in_full(cmd->in, namebuf, GIT_SHA1_HEXSZ + 1) < 0) | |
490 | goto error; | |
491 | } | |
492 | close(cmd->in); | |
493 | cmd->in = -1; | |
494 | sigchain_pop(SIGPIPE); | |
495 | ||
496 | return 0; | |
497 | ||
498 | error: | |
499 | sigchain_pop(SIGPIPE); | |
500 | ||
501 | if (cmd->in >= 0) | |
502 | close(cmd->in); | |
503 | if (cmd->out >= 0) | |
504 | close(cmd->out); | |
505 | return -1; | |
506 | } | |
507 | ||
508 | static int get_reachable_list(struct object_array *src, | |
509 | struct object_array *reachable) | |
510 | { | |
511 | struct child_process cmd = CHILD_PROCESS_INIT; | |
512 | int i; | |
513 | struct object *o; | |
514 | char namebuf[GIT_MAX_HEXSZ + 2]; /* ^ + hash + LF */ | |
515 | const unsigned hexsz = the_hash_algo->hexsz; | |
516 | ||
517 | if (do_reachable_revlist(&cmd, src, reachable) < 0) | |
518 | return -1; | |
519 | ||
520 | while ((i = read_in_full(cmd.out, namebuf, hexsz + 1)) == hexsz + 1) { | |
521 | struct object_id sha1; | |
522 | const char *p; | |
523 | ||
524 | if (parse_oid_hex(namebuf, &sha1, &p) || *p != '\n') | |
525 | break; | |
526 | ||
527 | o = lookup_object(the_repository, sha1.hash); | |
528 | if (o && o->type == OBJ_COMMIT) { | |
529 | o->flags &= ~TMP_MARK; | |
530 | } | |
531 | } | |
532 | for (i = get_max_object_index(); 0 < i; i--) { | |
533 | o = get_indexed_object(i - 1); | |
534 | if (o && o->type == OBJ_COMMIT && | |
535 | (o->flags & TMP_MARK)) { | |
536 | add_object_array(o, NULL, reachable); | |
537 | o->flags &= ~TMP_MARK; | |
538 | } | |
539 | } | |
540 | close(cmd.out); | |
541 | ||
542 | if (finish_command(&cmd)) | |
543 | return -1; | |
544 | ||
545 | return 0; | |
546 | } | |
547 | ||
548 | static int has_unreachable(struct object_array *src) | |
549 | { | |
550 | struct child_process cmd = CHILD_PROCESS_INIT; | |
551 | char buf[1]; | |
552 | int i; | |
553 | ||
554 | if (do_reachable_revlist(&cmd, src, NULL) < 0) | |
555 | return 1; | |
556 | ||
557 | /* | |
558 | * The commits out of the rev-list are not ancestors of | |
559 | * our ref. | |
560 | */ | |
561 | i = read_in_full(cmd.out, buf, 1); | |
562 | if (i) | |
563 | goto error; | |
564 | close(cmd.out); | |
565 | cmd.out = -1; | |
566 | ||
567 | /* | |
568 | * rev-list may have died by encountering a bad commit | |
569 | * in the history, in which case we do want to bail out | |
570 | * even when it showed no commit. | |
571 | */ | |
572 | if (finish_command(&cmd)) | |
573 | goto error; | |
574 | ||
575 | /* All the non-tip ones are ancestors of what we advertised */ | |
576 | return 0; | |
577 | ||
578 | error: | |
579 | sigchain_pop(SIGPIPE); | |
580 | if (cmd.out >= 0) | |
581 | close(cmd.out); | |
582 | return 1; | |
583 | } | |
584 | ||
585 | static void check_non_tip(void) | |
586 | { | |
587 | int i; | |
588 | ||
589 | /* | |
590 | * In the normal in-process case without | |
591 | * uploadpack.allowReachableSHA1InWant, | |
592 | * non-tip requests can never happen. | |
593 | */ | |
594 | if (!stateless_rpc && !(allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1)) | |
595 | goto error; | |
596 | if (!has_unreachable(&want_obj)) | |
597 | /* All the non-tip ones are ancestors of what we advertised */ | |
598 | return; | |
599 | ||
600 | error: | |
601 | /* Pick one of them (we know there at least is one) */ | |
602 | for (i = 0; i < want_obj.nr; i++) { | |
603 | struct object *o = want_obj.objects[i].item; | |
604 | if (!is_our_ref(o)) | |
605 | die("git upload-pack: not our ref %s", | |
606 | oid_to_hex(&o->oid)); | |
607 | } | |
608 | } | |
609 | ||
610 | static void send_shallow(struct commit_list *result) | |
611 | { | |
612 | while (result) { | |
613 | struct object *object = &result->item->object; | |
614 | if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) { | |
615 | packet_write_fmt(1, "shallow %s", | |
616 | oid_to_hex(&object->oid)); | |
617 | register_shallow(the_repository, &object->oid); | |
618 | shallow_nr++; | |
619 | } | |
620 | result = result->next; | |
621 | } | |
622 | } | |
623 | ||
624 | static void send_unshallow(const struct object_array *shallows) | |
625 | { | |
626 | int i; | |
627 | ||
628 | for (i = 0; i < shallows->nr; i++) { | |
629 | struct object *object = shallows->objects[i].item; | |
630 | if (object->flags & NOT_SHALLOW) { | |
631 | struct commit_list *parents; | |
632 | packet_write_fmt(1, "unshallow %s", | |
633 | oid_to_hex(&object->oid)); | |
634 | object->flags &= ~CLIENT_SHALLOW; | |
635 | /* | |
636 | * We want to _register_ "object" as shallow, but we | |
637 | * also need to traverse object's parents to deepen a | |
638 | * shallow clone. Unregister it for now so we can | |
639 | * parse and add the parents to the want list, then | |
640 | * re-register it. | |
641 | */ | |
642 | unregister_shallow(&object->oid); | |
643 | object->parsed = 0; | |
644 | parse_commit_or_die((struct commit *)object); | |
645 | parents = ((struct commit *)object)->parents; | |
646 | while (parents) { | |
647 | add_object_array(&parents->item->object, | |
648 | NULL, &want_obj); | |
649 | parents = parents->next; | |
650 | } | |
651 | add_object_array(object, NULL, &extra_edge_obj); | |
652 | } | |
653 | /* make sure commit traversal conforms to client */ | |
654 | register_shallow(the_repository, &object->oid); | |
655 | } | |
656 | } | |
657 | ||
658 | static void deepen(int depth, int deepen_relative, | |
659 | struct object_array *shallows) | |
660 | { | |
661 | if (depth == INFINITE_DEPTH && !is_repository_shallow(the_repository)) { | |
662 | int i; | |
663 | ||
664 | for (i = 0; i < shallows->nr; i++) { | |
665 | struct object *object = shallows->objects[i].item; | |
666 | object->flags |= NOT_SHALLOW; | |
667 | } | |
668 | } else if (deepen_relative) { | |
669 | struct object_array reachable_shallows = OBJECT_ARRAY_INIT; | |
670 | struct commit_list *result; | |
671 | ||
672 | get_reachable_list(shallows, &reachable_shallows); | |
673 | result = get_shallow_commits(&reachable_shallows, | |
674 | depth + 1, | |
675 | SHALLOW, NOT_SHALLOW); | |
676 | send_shallow(result); | |
677 | free_commit_list(result); | |
678 | object_array_clear(&reachable_shallows); | |
679 | } else { | |
680 | struct commit_list *result; | |
681 | ||
682 | result = get_shallow_commits(&want_obj, depth, | |
683 | SHALLOW, NOT_SHALLOW); | |
684 | send_shallow(result); | |
685 | free_commit_list(result); | |
686 | } | |
687 | ||
688 | send_unshallow(shallows); | |
689 | } | |
690 | ||
691 | static void deepen_by_rev_list(int ac, const char **av, | |
692 | struct object_array *shallows) | |
693 | { | |
694 | struct commit_list *result; | |
695 | ||
696 | close_commit_graph(the_repository); | |
697 | result = get_shallow_commits_by_rev_list(ac, av, SHALLOW, NOT_SHALLOW); | |
698 | send_shallow(result); | |
699 | free_commit_list(result); | |
700 | send_unshallow(shallows); | |
701 | } | |
702 | ||
703 | /* Returns 1 if a shallow list is sent or 0 otherwise */ | |
704 | static int send_shallow_list(int depth, int deepen_rev_list, | |
705 | timestamp_t deepen_since, | |
706 | struct string_list *deepen_not, | |
707 | struct object_array *shallows) | |
708 | { | |
709 | int ret = 0; | |
710 | ||
711 | if (depth > 0 && deepen_rev_list) | |
712 | die("git upload-pack: deepen and deepen-since (or deepen-not) cannot be used together"); | |
713 | if (depth > 0) { | |
714 | deepen(depth, deepen_relative, shallows); | |
715 | ret = 1; | |
716 | } else if (deepen_rev_list) { | |
717 | struct argv_array av = ARGV_ARRAY_INIT; | |
718 | int i; | |
719 | ||
720 | argv_array_push(&av, "rev-list"); | |
721 | if (deepen_since) | |
722 | argv_array_pushf(&av, "--max-age=%"PRItime, deepen_since); | |
723 | if (deepen_not->nr) { | |
724 | argv_array_push(&av, "--not"); | |
725 | for (i = 0; i < deepen_not->nr; i++) { | |
726 | struct string_list_item *s = deepen_not->items + i; | |
727 | argv_array_push(&av, s->string); | |
728 | } | |
729 | argv_array_push(&av, "--not"); | |
730 | } | |
731 | for (i = 0; i < want_obj.nr; i++) { | |
732 | struct object *o = want_obj.objects[i].item; | |
733 | argv_array_push(&av, oid_to_hex(&o->oid)); | |
734 | } | |
735 | deepen_by_rev_list(av.argc, av.argv, shallows); | |
736 | argv_array_clear(&av); | |
737 | ret = 1; | |
738 | } else { | |
739 | if (shallows->nr > 0) { | |
740 | int i; | |
741 | for (i = 0; i < shallows->nr; i++) | |
742 | register_shallow(the_repository, | |
743 | &shallows->objects[i].item->oid); | |
744 | } | |
745 | } | |
746 | ||
747 | shallow_nr += shallows->nr; | |
748 | return ret; | |
749 | } | |
750 | ||
751 | static int process_shallow(const char *line, struct object_array *shallows) | |
752 | { | |
753 | const char *arg; | |
754 | if (skip_prefix(line, "shallow ", &arg)) { | |
755 | struct object_id oid; | |
756 | struct object *object; | |
757 | if (get_oid_hex(arg, &oid)) | |
758 | die("invalid shallow line: %s", line); | |
759 | object = parse_object(the_repository, &oid); | |
760 | if (!object) | |
761 | return 1; | |
762 | if (object->type != OBJ_COMMIT) | |
763 | die("invalid shallow object %s", oid_to_hex(&oid)); | |
764 | if (!(object->flags & CLIENT_SHALLOW)) { | |
765 | object->flags |= CLIENT_SHALLOW; | |
766 | add_object_array(object, NULL, shallows); | |
767 | } | |
768 | return 1; | |
769 | } | |
770 | ||
771 | return 0; | |
772 | } | |
773 | ||
774 | static int process_deepen(const char *line, int *depth) | |
775 | { | |
776 | const char *arg; | |
777 | if (skip_prefix(line, "deepen ", &arg)) { | |
778 | char *end = NULL; | |
779 | *depth = (int)strtol(arg, &end, 0); | |
780 | if (!end || *end || *depth <= 0) | |
781 | die("Invalid deepen: %s", line); | |
782 | return 1; | |
783 | } | |
784 | ||
785 | return 0; | |
786 | } | |
787 | ||
788 | static int process_deepen_since(const char *line, timestamp_t *deepen_since, int *deepen_rev_list) | |
789 | { | |
790 | const char *arg; | |
791 | if (skip_prefix(line, "deepen-since ", &arg)) { | |
792 | char *end = NULL; | |
793 | *deepen_since = parse_timestamp(arg, &end, 0); | |
794 | if (!end || *end || !deepen_since || | |
795 | /* revisions.c's max_age -1 is special */ | |
796 | *deepen_since == -1) | |
797 | die("Invalid deepen-since: %s", line); | |
798 | *deepen_rev_list = 1; | |
799 | return 1; | |
800 | } | |
801 | return 0; | |
802 | } | |
803 | ||
804 | static int process_deepen_not(const char *line, struct string_list *deepen_not, int *deepen_rev_list) | |
805 | { | |
806 | const char *arg; | |
807 | if (skip_prefix(line, "deepen-not ", &arg)) { | |
808 | char *ref = NULL; | |
809 | struct object_id oid; | |
810 | if (expand_ref(arg, strlen(arg), &oid, &ref) != 1) | |
811 | die("git upload-pack: ambiguous deepen-not: %s", line); | |
812 | string_list_append(deepen_not, ref); | |
813 | free(ref); | |
814 | *deepen_rev_list = 1; | |
815 | return 1; | |
816 | } | |
817 | return 0; | |
818 | } | |
819 | ||
820 | static void receive_needs(void) | |
821 | { | |
822 | struct object_array shallows = OBJECT_ARRAY_INIT; | |
823 | struct string_list deepen_not = STRING_LIST_INIT_DUP; | |
824 | int depth = 0; | |
825 | int has_non_tip = 0; | |
826 | timestamp_t deepen_since = 0; | |
827 | int deepen_rev_list = 0; | |
828 | ||
829 | shallow_nr = 0; | |
830 | for (;;) { | |
831 | struct object *o; | |
832 | const char *features; | |
833 | struct object_id oid_buf; | |
834 | char *line = packet_read_line(0, NULL); | |
835 | const char *arg; | |
836 | ||
837 | reset_timeout(); | |
838 | if (!line) | |
839 | break; | |
840 | ||
841 | if (process_shallow(line, &shallows)) | |
842 | continue; | |
843 | if (process_deepen(line, &depth)) | |
844 | continue; | |
845 | if (process_deepen_since(line, &deepen_since, &deepen_rev_list)) | |
846 | continue; | |
847 | if (process_deepen_not(line, &deepen_not, &deepen_rev_list)) | |
848 | continue; | |
849 | ||
850 | if (skip_prefix(line, "filter ", &arg)) { | |
851 | if (!filter_capability_requested) | |
852 | die("git upload-pack: filtering capability not negotiated"); | |
853 | parse_list_objects_filter(&filter_options, arg); | |
854 | continue; | |
855 | } | |
856 | ||
857 | if (!skip_prefix(line, "want ", &arg) || | |
858 | parse_oid_hex(arg, &oid_buf, &features)) | |
859 | die("git upload-pack: protocol error, " | |
860 | "expected to get object ID, not '%s'", line); | |
861 | ||
862 | if (parse_feature_request(features, "deepen-relative")) | |
863 | deepen_relative = 1; | |
864 | if (parse_feature_request(features, "multi_ack_detailed")) | |
865 | multi_ack = 2; | |
866 | else if (parse_feature_request(features, "multi_ack")) | |
867 | multi_ack = 1; | |
868 | if (parse_feature_request(features, "no-done")) | |
869 | no_done = 1; | |
870 | if (parse_feature_request(features, "thin-pack")) | |
871 | use_thin_pack = 1; | |
872 | if (parse_feature_request(features, "ofs-delta")) | |
873 | use_ofs_delta = 1; | |
874 | if (parse_feature_request(features, "side-band-64k")) | |
875 | use_sideband = LARGE_PACKET_MAX; | |
876 | else if (parse_feature_request(features, "side-band")) | |
877 | use_sideband = DEFAULT_PACKET_MAX; | |
878 | if (parse_feature_request(features, "no-progress")) | |
879 | no_progress = 1; | |
880 | if (parse_feature_request(features, "include-tag")) | |
881 | use_include_tag = 1; | |
882 | if (allow_filter && parse_feature_request(features, "filter")) | |
883 | filter_capability_requested = 1; | |
884 | ||
885 | o = parse_object(the_repository, &oid_buf); | |
886 | if (!o) { | |
887 | packet_write_fmt(1, | |
888 | "ERR upload-pack: not our ref %s", | |
889 | oid_to_hex(&oid_buf)); | |
890 | die("git upload-pack: not our ref %s", | |
891 | oid_to_hex(&oid_buf)); | |
892 | } | |
893 | if (!(o->flags & WANTED)) { | |
894 | o->flags |= WANTED; | |
895 | if (!((allow_unadvertised_object_request & ALLOW_ANY_SHA1) == ALLOW_ANY_SHA1 | |
896 | || is_our_ref(o))) | |
897 | has_non_tip = 1; | |
898 | add_object_array(o, NULL, &want_obj); | |
899 | } | |
900 | } | |
901 | ||
902 | /* | |
903 | * We have sent all our refs already, and the other end | |
904 | * should have chosen out of them. When we are operating | |
905 | * in the stateless RPC mode, however, their choice may | |
906 | * have been based on the set of older refs advertised | |
907 | * by another process that handled the initial request. | |
908 | */ | |
909 | if (has_non_tip) | |
910 | check_non_tip(); | |
911 | ||
912 | if (!use_sideband && daemon_mode) | |
913 | no_progress = 1; | |
914 | ||
915 | if (depth == 0 && !deepen_rev_list && shallows.nr == 0) | |
916 | return; | |
917 | ||
918 | if (send_shallow_list(depth, deepen_rev_list, deepen_since, | |
919 | &deepen_not, &shallows)) | |
920 | packet_flush(1); | |
921 | object_array_clear(&shallows); | |
922 | } | |
923 | ||
924 | /* return non-zero if the ref is hidden, otherwise 0 */ | |
925 | static int mark_our_ref(const char *refname, const char *refname_full, | |
926 | const struct object_id *oid) | |
927 | { | |
928 | struct object *o = lookup_unknown_object(oid->hash); | |
929 | ||
930 | if (ref_is_hidden(refname, refname_full)) { | |
931 | o->flags |= HIDDEN_REF; | |
932 | return 1; | |
933 | } | |
934 | o->flags |= OUR_REF; | |
935 | return 0; | |
936 | } | |
937 | ||
938 | static int check_ref(const char *refname_full, const struct object_id *oid, | |
939 | int flag, void *cb_data) | |
940 | { | |
941 | const char *refname = strip_namespace(refname_full); | |
942 | ||
943 | mark_our_ref(refname, refname_full, oid); | |
944 | return 0; | |
945 | } | |
946 | ||
947 | static void format_symref_info(struct strbuf *buf, struct string_list *symref) | |
948 | { | |
949 | struct string_list_item *item; | |
950 | ||
951 | if (!symref->nr) | |
952 | return; | |
953 | for_each_string_list_item(item, symref) | |
954 | strbuf_addf(buf, " symref=%s:%s", item->string, (char *)item->util); | |
955 | } | |
956 | ||
957 | static int send_ref(const char *refname, const struct object_id *oid, | |
958 | int flag, void *cb_data) | |
959 | { | |
960 | static const char *capabilities = "multi_ack thin-pack side-band" | |
961 | " side-band-64k ofs-delta shallow deepen-since deepen-not" | |
962 | " deepen-relative no-progress include-tag multi_ack_detailed"; | |
963 | const char *refname_nons = strip_namespace(refname); | |
964 | struct object_id peeled; | |
965 | ||
966 | if (mark_our_ref(refname_nons, refname, oid)) | |
967 | return 0; | |
968 | ||
969 | if (capabilities) { | |
970 | struct strbuf symref_info = STRBUF_INIT; | |
971 | ||
972 | format_symref_info(&symref_info, cb_data); | |
973 | packet_write_fmt(1, "%s %s%c%s%s%s%s%s%s agent=%s\n", | |
974 | oid_to_hex(oid), refname_nons, | |
975 | 0, capabilities, | |
976 | (allow_unadvertised_object_request & ALLOW_TIP_SHA1) ? | |
977 | " allow-tip-sha1-in-want" : "", | |
978 | (allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1) ? | |
979 | " allow-reachable-sha1-in-want" : "", | |
980 | stateless_rpc ? " no-done" : "", | |
981 | symref_info.buf, | |
982 | allow_filter ? " filter" : "", | |
983 | git_user_agent_sanitized()); | |
984 | strbuf_release(&symref_info); | |
985 | } else { | |
986 | packet_write_fmt(1, "%s %s\n", oid_to_hex(oid), refname_nons); | |
987 | } | |
988 | capabilities = NULL; | |
989 | if (!peel_ref(refname, &peeled)) | |
990 | packet_write_fmt(1, "%s %s^{}\n", oid_to_hex(&peeled), refname_nons); | |
991 | return 0; | |
992 | } | |
993 | ||
994 | static int find_symref(const char *refname, const struct object_id *oid, | |
995 | int flag, void *cb_data) | |
996 | { | |
997 | const char *symref_target; | |
998 | struct string_list_item *item; | |
999 | ||
1000 | if ((flag & REF_ISSYMREF) == 0) | |
1001 | return 0; | |
1002 | symref_target = resolve_ref_unsafe(refname, 0, NULL, &flag); | |
1003 | if (!symref_target || (flag & REF_ISSYMREF) == 0) | |
1004 | die("'%s' is a symref but it is not?", refname); | |
1005 | item = string_list_append(cb_data, refname); | |
1006 | item->util = xstrdup(symref_target); | |
1007 | return 0; | |
1008 | } | |
1009 | ||
1010 | static int upload_pack_config(const char *var, const char *value, void *unused) | |
1011 | { | |
1012 | if (!strcmp("uploadpack.allowtipsha1inwant", var)) { | |
1013 | if (git_config_bool(var, value)) | |
1014 | allow_unadvertised_object_request |= ALLOW_TIP_SHA1; | |
1015 | else | |
1016 | allow_unadvertised_object_request &= ~ALLOW_TIP_SHA1; | |
1017 | } else if (!strcmp("uploadpack.allowreachablesha1inwant", var)) { | |
1018 | if (git_config_bool(var, value)) | |
1019 | allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1; | |
1020 | else | |
1021 | allow_unadvertised_object_request &= ~ALLOW_REACHABLE_SHA1; | |
1022 | } else if (!strcmp("uploadpack.allowanysha1inwant", var)) { | |
1023 | if (git_config_bool(var, value)) | |
1024 | allow_unadvertised_object_request |= ALLOW_ANY_SHA1; | |
1025 | else | |
1026 | allow_unadvertised_object_request &= ~ALLOW_ANY_SHA1; | |
1027 | } else if (!strcmp("uploadpack.keepalive", var)) { | |
1028 | keepalive = git_config_int(var, value); | |
1029 | if (!keepalive) | |
1030 | keepalive = -1; | |
1031 | } else if (current_config_scope() != CONFIG_SCOPE_REPO) { | |
1032 | if (!strcmp("uploadpack.packobjectshook", var)) | |
1033 | return git_config_string(&pack_objects_hook, var, value); | |
1034 | } else if (!strcmp("uploadpack.allowfilter", var)) { | |
1035 | allow_filter = git_config_bool(var, value); | |
1036 | } else if (!strcmp("uploadpack.allowrefinwant", var)) { | |
1037 | allow_ref_in_want = git_config_bool(var, value); | |
1038 | } | |
1039 | return parse_hide_refs_config(var, value, "uploadpack"); | |
1040 | } | |
1041 | ||
1042 | void upload_pack(struct upload_pack_options *options) | |
1043 | { | |
1044 | struct string_list symref = STRING_LIST_INIT_DUP; | |
1045 | ||
1046 | stateless_rpc = options->stateless_rpc; | |
1047 | timeout = options->timeout; | |
1048 | daemon_mode = options->daemon_mode; | |
1049 | ||
1050 | git_config(upload_pack_config, NULL); | |
1051 | ||
1052 | head_ref_namespaced(find_symref, &symref); | |
1053 | ||
1054 | if (options->advertise_refs || !stateless_rpc) { | |
1055 | reset_timeout(); | |
1056 | head_ref_namespaced(send_ref, &symref); | |
1057 | for_each_namespaced_ref(send_ref, &symref); | |
1058 | advertise_shallow_grafts(1); | |
1059 | packet_flush(1); | |
1060 | } else { | |
1061 | head_ref_namespaced(check_ref, NULL); | |
1062 | for_each_namespaced_ref(check_ref, NULL); | |
1063 | } | |
1064 | string_list_clear(&symref, 1); | |
1065 | if (options->advertise_refs) | |
1066 | return; | |
1067 | ||
1068 | receive_needs(); | |
1069 | if (want_obj.nr) { | |
1070 | get_common_commits(); | |
1071 | create_pack_file(); | |
1072 | } | |
1073 | } | |
1074 | ||
1075 | struct upload_pack_data { | |
1076 | struct object_array wants; | |
1077 | struct string_list wanted_refs; | |
1078 | struct oid_array haves; | |
1079 | ||
1080 | struct object_array shallows; | |
1081 | struct string_list deepen_not; | |
1082 | int depth; | |
1083 | timestamp_t deepen_since; | |
1084 | int deepen_rev_list; | |
1085 | int deepen_relative; | |
1086 | ||
1087 | unsigned stateless_rpc : 1; | |
1088 | ||
1089 | unsigned use_thin_pack : 1; | |
1090 | unsigned use_ofs_delta : 1; | |
1091 | unsigned no_progress : 1; | |
1092 | unsigned use_include_tag : 1; | |
1093 | unsigned done : 1; | |
1094 | }; | |
1095 | ||
1096 | static void upload_pack_data_init(struct upload_pack_data *data) | |
1097 | { | |
1098 | struct object_array wants = OBJECT_ARRAY_INIT; | |
1099 | struct string_list wanted_refs = STRING_LIST_INIT_DUP; | |
1100 | struct oid_array haves = OID_ARRAY_INIT; | |
1101 | struct object_array shallows = OBJECT_ARRAY_INIT; | |
1102 | struct string_list deepen_not = STRING_LIST_INIT_DUP; | |
1103 | ||
1104 | memset(data, 0, sizeof(*data)); | |
1105 | data->wants = wants; | |
1106 | data->wanted_refs = wanted_refs; | |
1107 | data->haves = haves; | |
1108 | data->shallows = shallows; | |
1109 | data->deepen_not = deepen_not; | |
1110 | } | |
1111 | ||
1112 | static void upload_pack_data_clear(struct upload_pack_data *data) | |
1113 | { | |
1114 | object_array_clear(&data->wants); | |
1115 | string_list_clear(&data->wanted_refs, 1); | |
1116 | oid_array_clear(&data->haves); | |
1117 | object_array_clear(&data->shallows); | |
1118 | string_list_clear(&data->deepen_not, 0); | |
1119 | } | |
1120 | ||
1121 | static int parse_want(const char *line) | |
1122 | { | |
1123 | const char *arg; | |
1124 | if (skip_prefix(line, "want ", &arg)) { | |
1125 | struct object_id oid; | |
1126 | struct object *o; | |
1127 | ||
1128 | if (get_oid_hex(arg, &oid)) | |
1129 | die("git upload-pack: protocol error, " | |
1130 | "expected to get oid, not '%s'", line); | |
1131 | ||
1132 | o = parse_object(the_repository, &oid); | |
1133 | if (!o) { | |
1134 | packet_write_fmt(1, | |
1135 | "ERR upload-pack: not our ref %s", | |
1136 | oid_to_hex(&oid)); | |
1137 | die("git upload-pack: not our ref %s", | |
1138 | oid_to_hex(&oid)); | |
1139 | } | |
1140 | ||
1141 | if (!(o->flags & WANTED)) { | |
1142 | o->flags |= WANTED; | |
1143 | add_object_array(o, NULL, &want_obj); | |
1144 | } | |
1145 | ||
1146 | return 1; | |
1147 | } | |
1148 | ||
1149 | return 0; | |
1150 | } | |
1151 | ||
1152 | static int parse_want_ref(const char *line, struct string_list *wanted_refs) | |
1153 | { | |
1154 | const char *arg; | |
1155 | if (skip_prefix(line, "want-ref ", &arg)) { | |
1156 | struct object_id oid; | |
1157 | struct string_list_item *item; | |
1158 | struct object *o; | |
1159 | ||
1160 | if (read_ref(arg, &oid)) { | |
1161 | packet_write_fmt(1, "ERR unknown ref %s", arg); | |
1162 | die("unknown ref %s", arg); | |
1163 | } | |
1164 | ||
1165 | item = string_list_append(wanted_refs, arg); | |
1166 | item->util = oiddup(&oid); | |
1167 | ||
1168 | o = parse_object_or_die(&oid, arg); | |
1169 | if (!(o->flags & WANTED)) { | |
1170 | o->flags |= WANTED; | |
1171 | add_object_array(o, NULL, &want_obj); | |
1172 | } | |
1173 | ||
1174 | return 1; | |
1175 | } | |
1176 | ||
1177 | return 0; | |
1178 | } | |
1179 | ||
1180 | static int parse_have(const char *line, struct oid_array *haves) | |
1181 | { | |
1182 | const char *arg; | |
1183 | if (skip_prefix(line, "have ", &arg)) { | |
1184 | struct object_id oid; | |
1185 | ||
1186 | if (get_oid_hex(arg, &oid)) | |
1187 | die("git upload-pack: expected SHA1 object, got '%s'", arg); | |
1188 | oid_array_append(haves, &oid); | |
1189 | return 1; | |
1190 | } | |
1191 | ||
1192 | return 0; | |
1193 | } | |
1194 | ||
1195 | static void process_args(struct packet_reader *request, | |
1196 | struct upload_pack_data *data) | |
1197 | { | |
1198 | while (packet_reader_read(request) != PACKET_READ_FLUSH) { | |
1199 | const char *arg = request->line; | |
1200 | const char *p; | |
1201 | ||
1202 | /* process want */ | |
1203 | if (parse_want(arg)) | |
1204 | continue; | |
1205 | if (allow_ref_in_want && parse_want_ref(arg, &data->wanted_refs)) | |
1206 | continue; | |
1207 | /* process have line */ | |
1208 | if (parse_have(arg, &data->haves)) | |
1209 | continue; | |
1210 | ||
1211 | /* process args like thin-pack */ | |
1212 | if (!strcmp(arg, "thin-pack")) { | |
1213 | use_thin_pack = 1; | |
1214 | continue; | |
1215 | } | |
1216 | if (!strcmp(arg, "ofs-delta")) { | |
1217 | use_ofs_delta = 1; | |
1218 | continue; | |
1219 | } | |
1220 | if (!strcmp(arg, "no-progress")) { | |
1221 | no_progress = 1; | |
1222 | continue; | |
1223 | } | |
1224 | if (!strcmp(arg, "include-tag")) { | |
1225 | use_include_tag = 1; | |
1226 | continue; | |
1227 | } | |
1228 | if (!strcmp(arg, "done")) { | |
1229 | data->done = 1; | |
1230 | continue; | |
1231 | } | |
1232 | ||
1233 | /* Shallow related arguments */ | |
1234 | if (process_shallow(arg, &data->shallows)) | |
1235 | continue; | |
1236 | if (process_deepen(arg, &data->depth)) | |
1237 | continue; | |
1238 | if (process_deepen_since(arg, &data->deepen_since, | |
1239 | &data->deepen_rev_list)) | |
1240 | continue; | |
1241 | if (process_deepen_not(arg, &data->deepen_not, | |
1242 | &data->deepen_rev_list)) | |
1243 | continue; | |
1244 | if (!strcmp(arg, "deepen-relative")) { | |
1245 | data->deepen_relative = 1; | |
1246 | continue; | |
1247 | } | |
1248 | ||
1249 | if (allow_filter && skip_prefix(arg, "filter ", &p)) { | |
1250 | parse_list_objects_filter(&filter_options, p); | |
1251 | continue; | |
1252 | } | |
1253 | ||
1254 | /* ignore unknown lines maybe? */ | |
1255 | die("unexpected line: '%s'", arg); | |
1256 | } | |
1257 | } | |
1258 | ||
1259 | static int process_haves(struct oid_array *haves, struct oid_array *common) | |
1260 | { | |
1261 | int i; | |
1262 | ||
1263 | /* Process haves */ | |
1264 | for (i = 0; i < haves->nr; i++) { | |
1265 | const struct object_id *oid = &haves->oid[i]; | |
1266 | struct object *o; | |
1267 | int we_knew_they_have = 0; | |
1268 | ||
1269 | if (!has_object_file(oid)) | |
1270 | continue; | |
1271 | ||
1272 | oid_array_append(common, oid); | |
1273 | ||
1274 | o = parse_object(the_repository, oid); | |
1275 | if (!o) | |
1276 | die("oops (%s)", oid_to_hex(oid)); | |
1277 | if (o->type == OBJ_COMMIT) { | |
1278 | struct commit_list *parents; | |
1279 | struct commit *commit = (struct commit *)o; | |
1280 | if (o->flags & THEY_HAVE) | |
1281 | we_knew_they_have = 1; | |
1282 | else | |
1283 | o->flags |= THEY_HAVE; | |
1284 | if (!oldest_have || (commit->date < oldest_have)) | |
1285 | oldest_have = commit->date; | |
1286 | for (parents = commit->parents; | |
1287 | parents; | |
1288 | parents = parents->next) | |
1289 | parents->item->object.flags |= THEY_HAVE; | |
1290 | } | |
1291 | if (!we_knew_they_have) | |
1292 | add_object_array(o, NULL, &have_obj); | |
1293 | } | |
1294 | ||
1295 | return 0; | |
1296 | } | |
1297 | ||
1298 | static int send_acks(struct oid_array *acks, struct strbuf *response) | |
1299 | { | |
1300 | int i; | |
1301 | ||
1302 | packet_buf_write(response, "acknowledgments\n"); | |
1303 | ||
1304 | /* Send Acks */ | |
1305 | if (!acks->nr) | |
1306 | packet_buf_write(response, "NAK\n"); | |
1307 | ||
1308 | for (i = 0; i < acks->nr; i++) { | |
1309 | packet_buf_write(response, "ACK %s\n", | |
1310 | oid_to_hex(&acks->oid[i])); | |
1311 | } | |
1312 | ||
1313 | if (ok_to_give_up()) { | |
1314 | /* Send Ready */ | |
1315 | packet_buf_write(response, "ready\n"); | |
1316 | return 1; | |
1317 | } | |
1318 | ||
1319 | return 0; | |
1320 | } | |
1321 | ||
1322 | static int process_haves_and_send_acks(struct upload_pack_data *data) | |
1323 | { | |
1324 | struct oid_array common = OID_ARRAY_INIT; | |
1325 | struct strbuf response = STRBUF_INIT; | |
1326 | int ret = 0; | |
1327 | ||
1328 | process_haves(&data->haves, &common); | |
1329 | if (data->done) { | |
1330 | ret = 1; | |
1331 | } else if (send_acks(&common, &response)) { | |
1332 | packet_buf_delim(&response); | |
1333 | ret = 1; | |
1334 | } else { | |
1335 | /* Add Flush */ | |
1336 | packet_buf_flush(&response); | |
1337 | ret = 0; | |
1338 | } | |
1339 | ||
1340 | /* Send response */ | |
1341 | write_or_die(1, response.buf, response.len); | |
1342 | strbuf_release(&response); | |
1343 | ||
1344 | oid_array_clear(&data->haves); | |
1345 | oid_array_clear(&common); | |
1346 | return ret; | |
1347 | } | |
1348 | ||
1349 | static void send_wanted_ref_info(struct upload_pack_data *data) | |
1350 | { | |
1351 | const struct string_list_item *item; | |
1352 | ||
1353 | if (!data->wanted_refs.nr) | |
1354 | return; | |
1355 | ||
1356 | packet_write_fmt(1, "wanted-refs\n"); | |
1357 | ||
1358 | for_each_string_list_item(item, &data->wanted_refs) { | |
1359 | packet_write_fmt(1, "%s %s\n", | |
1360 | oid_to_hex(item->util), | |
1361 | item->string); | |
1362 | } | |
1363 | ||
1364 | packet_delim(1); | |
1365 | } | |
1366 | ||
1367 | static void send_shallow_info(struct upload_pack_data *data) | |
1368 | { | |
1369 | /* No shallow info needs to be sent */ | |
1370 | if (!data->depth && !data->deepen_rev_list && !data->shallows.nr && | |
1371 | !is_repository_shallow(the_repository)) | |
1372 | return; | |
1373 | ||
1374 | packet_write_fmt(1, "shallow-info\n"); | |
1375 | ||
1376 | if (!send_shallow_list(data->depth, data->deepen_rev_list, | |
1377 | data->deepen_since, &data->deepen_not, | |
1378 | &data->shallows) && | |
1379 | is_repository_shallow(the_repository)) | |
1380 | deepen(INFINITE_DEPTH, data->deepen_relative, &data->shallows); | |
1381 | ||
1382 | packet_delim(1); | |
1383 | } | |
1384 | ||
1385 | enum fetch_state { | |
1386 | FETCH_PROCESS_ARGS = 0, | |
1387 | FETCH_SEND_ACKS, | |
1388 | FETCH_SEND_PACK, | |
1389 | FETCH_DONE, | |
1390 | }; | |
1391 | ||
1392 | int upload_pack_v2(struct repository *r, struct argv_array *keys, | |
1393 | struct packet_reader *request) | |
1394 | { | |
1395 | enum fetch_state state = FETCH_PROCESS_ARGS; | |
1396 | struct upload_pack_data data; | |
1397 | ||
1398 | git_config(upload_pack_config, NULL); | |
1399 | ||
1400 | upload_pack_data_init(&data); | |
1401 | use_sideband = LARGE_PACKET_MAX; | |
1402 | ||
1403 | while (state != FETCH_DONE) { | |
1404 | switch (state) { | |
1405 | case FETCH_PROCESS_ARGS: | |
1406 | process_args(request, &data); | |
1407 | ||
1408 | if (!want_obj.nr) { | |
1409 | /* | |
1410 | * Request didn't contain any 'want' lines, | |
1411 | * guess they didn't want anything. | |
1412 | */ | |
1413 | state = FETCH_DONE; | |
1414 | } else if (data.haves.nr) { | |
1415 | /* | |
1416 | * Request had 'have' lines, so lets ACK them. | |
1417 | */ | |
1418 | state = FETCH_SEND_ACKS; | |
1419 | } else { | |
1420 | /* | |
1421 | * Request had 'want's but no 'have's so we can | |
1422 | * immedietly go to construct and send a pack. | |
1423 | */ | |
1424 | state = FETCH_SEND_PACK; | |
1425 | } | |
1426 | break; | |
1427 | case FETCH_SEND_ACKS: | |
1428 | if (process_haves_and_send_acks(&data)) | |
1429 | state = FETCH_SEND_PACK; | |
1430 | else | |
1431 | state = FETCH_DONE; | |
1432 | break; | |
1433 | case FETCH_SEND_PACK: | |
1434 | send_wanted_ref_info(&data); | |
1435 | send_shallow_info(&data); | |
1436 | ||
1437 | packet_write_fmt(1, "packfile\n"); | |
1438 | create_pack_file(); | |
1439 | state = FETCH_DONE; | |
1440 | break; | |
1441 | case FETCH_DONE: | |
1442 | continue; | |
1443 | } | |
1444 | } | |
1445 | ||
1446 | upload_pack_data_clear(&data); | |
1447 | return 0; | |
1448 | } | |
1449 | ||
1450 | int upload_pack_advertise(struct repository *r, | |
1451 | struct strbuf *value) | |
1452 | { | |
1453 | if (value) { | |
1454 | int allow_filter_value; | |
1455 | int allow_ref_in_want; | |
1456 | ||
1457 | strbuf_addstr(value, "shallow"); | |
1458 | ||
1459 | if (!repo_config_get_bool(the_repository, | |
1460 | "uploadpack.allowfilter", | |
1461 | &allow_filter_value) && | |
1462 | allow_filter_value) | |
1463 | strbuf_addstr(value, " filter"); | |
1464 | ||
1465 | if (!repo_config_get_bool(the_repository, | |
1466 | "uploadpack.allowrefinwant", | |
1467 | &allow_ref_in_want) && | |
1468 | allow_ref_in_want) | |
1469 | strbuf_addstr(value, " ref-in-want"); | |
1470 | } | |
1471 | ||
1472 | return 1; | |
1473 | } |