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1 | #include "cache.h" | |
2 | #include "refs.h" | |
3 | #include "pkt-line.h" | |
4 | #include "sideband.h" | |
5 | #include "tag.h" | |
6 | #include "object.h" | |
7 | #include "commit.h" | |
8 | #include "exec_cmd.h" | |
9 | #include "diff.h" | |
10 | #include "revision.h" | |
11 | #include "list-objects.h" | |
12 | #include "run-command.h" | |
13 | ||
14 | static const char upload_pack_usage[] = "git upload-pack [--strict] [--timeout=nn] <dir>"; | |
15 | ||
16 | /* bits #0..7 in revision.h, #8..10 in commit.c */ | |
17 | #define THEY_HAVE (1u << 11) | |
18 | #define OUR_REF (1u << 12) | |
19 | #define WANTED (1u << 13) | |
20 | #define COMMON_KNOWN (1u << 14) | |
21 | #define REACHABLE (1u << 15) | |
22 | ||
23 | #define SHALLOW (1u << 16) | |
24 | #define NOT_SHALLOW (1u << 17) | |
25 | #define CLIENT_SHALLOW (1u << 18) | |
26 | ||
27 | static unsigned long oldest_have; | |
28 | ||
29 | static int multi_ack, nr_our_refs; | |
30 | static int use_thin_pack, use_ofs_delta, use_include_tag; | |
31 | static int no_progress, daemon_mode; | |
32 | static int shallow_nr; | |
33 | static struct object_array have_obj; | |
34 | static struct object_array want_obj; | |
35 | static struct object_array extra_edge_obj; | |
36 | static unsigned int timeout; | |
37 | /* 0 for no sideband, | |
38 | * otherwise maximum packet size (up to 65520 bytes). | |
39 | */ | |
40 | static int use_sideband; | |
41 | static int debug_fd; | |
42 | ||
43 | static void reset_timeout(void) | |
44 | { | |
45 | alarm(timeout); | |
46 | } | |
47 | ||
48 | static int strip(char *line, int len) | |
49 | { | |
50 | if (len && line[len-1] == '\n') | |
51 | line[--len] = 0; | |
52 | return len; | |
53 | } | |
54 | ||
55 | static ssize_t send_client_data(int fd, const char *data, ssize_t sz) | |
56 | { | |
57 | if (use_sideband) | |
58 | return send_sideband(1, fd, data, sz, use_sideband); | |
59 | if (fd == 3) | |
60 | /* emergency quit */ | |
61 | fd = 2; | |
62 | if (fd == 2) { | |
63 | /* XXX: are we happy to lose stuff here? */ | |
64 | xwrite(fd, data, sz); | |
65 | return sz; | |
66 | } | |
67 | return safe_write(fd, data, sz); | |
68 | } | |
69 | ||
70 | static FILE *pack_pipe = NULL; | |
71 | static void show_commit(struct commit *commit, void *data) | |
72 | { | |
73 | if (commit->object.flags & BOUNDARY) | |
74 | fputc('-', pack_pipe); | |
75 | if (fputs(sha1_to_hex(commit->object.sha1), pack_pipe) < 0) | |
76 | die("broken output pipe"); | |
77 | fputc('\n', pack_pipe); | |
78 | fflush(pack_pipe); | |
79 | free(commit->buffer); | |
80 | commit->buffer = NULL; | |
81 | } | |
82 | ||
83 | static void show_object(struct object *obj, const struct name_path *path, const char *component) | |
84 | { | |
85 | /* An object with name "foo\n0000000..." can be used to | |
86 | * confuse downstream git-pack-objects very badly. | |
87 | */ | |
88 | const char *name = path_name(path, component); | |
89 | const char *ep = strchr(name, '\n'); | |
90 | if (ep) { | |
91 | fprintf(pack_pipe, "%s %.*s\n", sha1_to_hex(obj->sha1), | |
92 | (int) (ep - name), | |
93 | name); | |
94 | } | |
95 | else | |
96 | fprintf(pack_pipe, "%s %s\n", | |
97 | sha1_to_hex(obj->sha1), name); | |
98 | free((char *)name); | |
99 | } | |
100 | ||
101 | static void show_edge(struct commit *commit) | |
102 | { | |
103 | fprintf(pack_pipe, "-%s\n", sha1_to_hex(commit->object.sha1)); | |
104 | } | |
105 | ||
106 | static int do_rev_list(int fd, void *create_full_pack) | |
107 | { | |
108 | int i; | |
109 | struct rev_info revs; | |
110 | ||
111 | pack_pipe = xfdopen(fd, "w"); | |
112 | init_revisions(&revs, NULL); | |
113 | revs.tag_objects = 1; | |
114 | revs.tree_objects = 1; | |
115 | revs.blob_objects = 1; | |
116 | if (use_thin_pack) | |
117 | revs.edge_hint = 1; | |
118 | ||
119 | if (create_full_pack) { | |
120 | const char *args[] = {"rev-list", "--all", NULL}; | |
121 | setup_revisions(2, args, &revs, NULL); | |
122 | } else { | |
123 | for (i = 0; i < want_obj.nr; i++) { | |
124 | struct object *o = want_obj.objects[i].item; | |
125 | /* why??? */ | |
126 | o->flags &= ~UNINTERESTING; | |
127 | add_pending_object(&revs, o, NULL); | |
128 | } | |
129 | for (i = 0; i < have_obj.nr; i++) { | |
130 | struct object *o = have_obj.objects[i].item; | |
131 | o->flags |= UNINTERESTING; | |
132 | add_pending_object(&revs, o, NULL); | |
133 | } | |
134 | setup_revisions(0, NULL, &revs, NULL); | |
135 | } | |
136 | if (prepare_revision_walk(&revs)) | |
137 | die("revision walk setup failed"); | |
138 | mark_edges_uninteresting(revs.commits, &revs, show_edge); | |
139 | if (use_thin_pack) | |
140 | for (i = 0; i < extra_edge_obj.nr; i++) | |
141 | fprintf(pack_pipe, "-%s\n", sha1_to_hex( | |
142 | extra_edge_obj.objects[i].item->sha1)); | |
143 | traverse_commit_list(&revs, show_commit, show_object, NULL); | |
144 | fflush(pack_pipe); | |
145 | fclose(pack_pipe); | |
146 | return 0; | |
147 | } | |
148 | ||
149 | static int feed_msg_to_hook(int fd, const char *fmt, ...) | |
150 | { | |
151 | int cnt; | |
152 | char buf[1024]; | |
153 | va_list params; | |
154 | ||
155 | va_start(params, fmt); | |
156 | cnt = vsprintf(buf, fmt, params); | |
157 | va_end(params); | |
158 | return write_in_full(fd, buf, cnt) != cnt; | |
159 | } | |
160 | ||
161 | static int feed_obj_to_hook(const char *label, struct object_array *oa, int i, int fd) | |
162 | { | |
163 | return feed_msg_to_hook(fd, "%s %s\n", label, | |
164 | sha1_to_hex(oa->objects[i].item->sha1)); | |
165 | } | |
166 | ||
167 | static int run_post_upload_pack_hook(size_t total, struct timeval *tv) | |
168 | { | |
169 | const char *argv[2]; | |
170 | struct child_process proc; | |
171 | int err, i; | |
172 | ||
173 | argv[0] = "hooks/post-upload-pack"; | |
174 | argv[1] = NULL; | |
175 | ||
176 | if (access(argv[0], X_OK) < 0) | |
177 | return 0; | |
178 | ||
179 | memset(&proc, 0, sizeof(proc)); | |
180 | proc.argv = argv; | |
181 | proc.in = -1; | |
182 | proc.stdout_to_stderr = 1; | |
183 | err = start_command(&proc); | |
184 | if (err) | |
185 | return err; | |
186 | for (i = 0; !err && i < want_obj.nr; i++) | |
187 | err |= feed_obj_to_hook("want", &want_obj, i, proc.in); | |
188 | for (i = 0; !err && i < have_obj.nr; i++) | |
189 | err |= feed_obj_to_hook("have", &have_obj, i, proc.in); | |
190 | if (!err) | |
191 | err |= feed_msg_to_hook(proc.in, "time %ld.%06ld\n", | |
192 | (long)tv->tv_sec, (long)tv->tv_usec); | |
193 | if (!err) | |
194 | err |= feed_msg_to_hook(proc.in, "size %ld\n", (long)total); | |
195 | if (!err) | |
196 | err |= feed_msg_to_hook(proc.in, "kind %s\n", | |
197 | (nr_our_refs == want_obj.nr && !have_obj.nr) | |
198 | ? "clone" : "fetch"); | |
199 | if (close(proc.in)) | |
200 | err = 1; | |
201 | if (finish_command(&proc)) | |
202 | err = 1; | |
203 | return err; | |
204 | } | |
205 | ||
206 | static void create_pack_file(void) | |
207 | { | |
208 | struct timeval start_tv, tv; | |
209 | struct async rev_list; | |
210 | struct child_process pack_objects; | |
211 | int create_full_pack = (nr_our_refs == want_obj.nr && !have_obj.nr); | |
212 | char data[8193], progress[128]; | |
213 | char abort_msg[] = "aborting due to possible repository " | |
214 | "corruption on the remote side."; | |
215 | int buffered = -1; | |
216 | ssize_t sz, total_sz; | |
217 | const char *argv[10]; | |
218 | int arg = 0; | |
219 | ||
220 | gettimeofday(&start_tv, NULL); | |
221 | total_sz = 0; | |
222 | if (shallow_nr) { | |
223 | rev_list.proc = do_rev_list; | |
224 | rev_list.data = 0; | |
225 | if (start_async(&rev_list)) | |
226 | die("git upload-pack: unable to fork git-rev-list"); | |
227 | argv[arg++] = "pack-objects"; | |
228 | } else { | |
229 | argv[arg++] = "pack-objects"; | |
230 | argv[arg++] = "--revs"; | |
231 | if (create_full_pack) | |
232 | argv[arg++] = "--all"; | |
233 | else if (use_thin_pack) | |
234 | argv[arg++] = "--thin"; | |
235 | } | |
236 | ||
237 | argv[arg++] = "--stdout"; | |
238 | if (!no_progress) | |
239 | argv[arg++] = "--progress"; | |
240 | if (use_ofs_delta) | |
241 | argv[arg++] = "--delta-base-offset"; | |
242 | if (use_include_tag) | |
243 | argv[arg++] = "--include-tag"; | |
244 | argv[arg++] = NULL; | |
245 | ||
246 | memset(&pack_objects, 0, sizeof(pack_objects)); | |
247 | pack_objects.in = shallow_nr ? rev_list.out : -1; | |
248 | pack_objects.out = -1; | |
249 | pack_objects.err = -1; | |
250 | pack_objects.git_cmd = 1; | |
251 | pack_objects.argv = argv; | |
252 | ||
253 | if (start_command(&pack_objects)) | |
254 | die("git upload-pack: unable to fork git-pack-objects"); | |
255 | ||
256 | /* pass on revisions we (don't) want */ | |
257 | if (!shallow_nr) { | |
258 | FILE *pipe_fd = xfdopen(pack_objects.in, "w"); | |
259 | if (!create_full_pack) { | |
260 | int i; | |
261 | for (i = 0; i < want_obj.nr; i++) | |
262 | fprintf(pipe_fd, "%s\n", sha1_to_hex(want_obj.objects[i].item->sha1)); | |
263 | fprintf(pipe_fd, "--not\n"); | |
264 | for (i = 0; i < have_obj.nr; i++) | |
265 | fprintf(pipe_fd, "%s\n", sha1_to_hex(have_obj.objects[i].item->sha1)); | |
266 | } | |
267 | ||
268 | fprintf(pipe_fd, "\n"); | |
269 | fflush(pipe_fd); | |
270 | fclose(pipe_fd); | |
271 | } | |
272 | ||
273 | ||
274 | /* We read from pack_objects.err to capture stderr output for | |
275 | * progress bar, and pack_objects.out to capture the pack data. | |
276 | */ | |
277 | ||
278 | while (1) { | |
279 | struct pollfd pfd[2]; | |
280 | int pe, pu, pollsize; | |
281 | ||
282 | reset_timeout(); | |
283 | ||
284 | pollsize = 0; | |
285 | pe = pu = -1; | |
286 | ||
287 | if (0 <= pack_objects.out) { | |
288 | pfd[pollsize].fd = pack_objects.out; | |
289 | pfd[pollsize].events = POLLIN; | |
290 | pu = pollsize; | |
291 | pollsize++; | |
292 | } | |
293 | if (0 <= pack_objects.err) { | |
294 | pfd[pollsize].fd = pack_objects.err; | |
295 | pfd[pollsize].events = POLLIN; | |
296 | pe = pollsize; | |
297 | pollsize++; | |
298 | } | |
299 | ||
300 | if (!pollsize) | |
301 | break; | |
302 | ||
303 | if (poll(pfd, pollsize, -1) < 0) { | |
304 | if (errno != EINTR) { | |
305 | error("poll failed, resuming: %s", | |
306 | strerror(errno)); | |
307 | sleep(1); | |
308 | } | |
309 | continue; | |
310 | } | |
311 | if (0 <= pe && (pfd[pe].revents & (POLLIN|POLLHUP))) { | |
312 | /* Status ready; we ship that in the side-band | |
313 | * or dump to the standard error. | |
314 | */ | |
315 | sz = xread(pack_objects.err, progress, | |
316 | sizeof(progress)); | |
317 | if (0 < sz) | |
318 | send_client_data(2, progress, sz); | |
319 | else if (sz == 0) { | |
320 | close(pack_objects.err); | |
321 | pack_objects.err = -1; | |
322 | } | |
323 | else | |
324 | goto fail; | |
325 | /* give priority to status messages */ | |
326 | continue; | |
327 | } | |
328 | if (0 <= pu && (pfd[pu].revents & (POLLIN|POLLHUP))) { | |
329 | /* Data ready; we keep the last byte to ourselves | |
330 | * in case we detect broken rev-list, so that we | |
331 | * can leave the stream corrupted. This is | |
332 | * unfortunate -- unpack-objects would happily | |
333 | * accept a valid packdata with trailing garbage, | |
334 | * so appending garbage after we pass all the | |
335 | * pack data is not good enough to signal | |
336 | * breakage to downstream. | |
337 | */ | |
338 | char *cp = data; | |
339 | ssize_t outsz = 0; | |
340 | if (0 <= buffered) { | |
341 | *cp++ = buffered; | |
342 | outsz++; | |
343 | } | |
344 | sz = xread(pack_objects.out, cp, | |
345 | sizeof(data) - outsz); | |
346 | if (0 < sz) | |
347 | total_sz += sz; | |
348 | else if (sz == 0) { | |
349 | close(pack_objects.out); | |
350 | pack_objects.out = -1; | |
351 | } | |
352 | else | |
353 | goto fail; | |
354 | sz += outsz; | |
355 | if (1 < sz) { | |
356 | buffered = data[sz-1] & 0xFF; | |
357 | sz--; | |
358 | } | |
359 | else | |
360 | buffered = -1; | |
361 | sz = send_client_data(1, data, sz); | |
362 | if (sz < 0) | |
363 | goto fail; | |
364 | } | |
365 | } | |
366 | ||
367 | if (finish_command(&pack_objects)) { | |
368 | error("git upload-pack: git-pack-objects died with error."); | |
369 | goto fail; | |
370 | } | |
371 | if (shallow_nr && finish_async(&rev_list)) | |
372 | goto fail; /* error was already reported */ | |
373 | ||
374 | /* flush the data */ | |
375 | if (0 <= buffered) { | |
376 | data[0] = buffered; | |
377 | sz = send_client_data(1, data, 1); | |
378 | if (sz < 0) | |
379 | goto fail; | |
380 | fprintf(stderr, "flushed.\n"); | |
381 | } | |
382 | if (use_sideband) | |
383 | packet_flush(1); | |
384 | ||
385 | gettimeofday(&tv, NULL); | |
386 | tv.tv_sec -= start_tv.tv_sec; | |
387 | if (tv.tv_usec < start_tv.tv_usec) { | |
388 | tv.tv_sec--; | |
389 | tv.tv_usec += 1000000; | |
390 | } | |
391 | tv.tv_usec -= start_tv.tv_usec; | |
392 | if (run_post_upload_pack_hook(total_sz, &tv)) | |
393 | warning("post-upload-hook failed"); | |
394 | return; | |
395 | ||
396 | fail: | |
397 | send_client_data(3, abort_msg, sizeof(abort_msg)); | |
398 | die("git upload-pack: %s", abort_msg); | |
399 | } | |
400 | ||
401 | static int got_sha1(char *hex, unsigned char *sha1) | |
402 | { | |
403 | struct object *o; | |
404 | int we_knew_they_have = 0; | |
405 | ||
406 | if (get_sha1_hex(hex, sha1)) | |
407 | die("git upload-pack: expected SHA1 object, got '%s'", hex); | |
408 | if (!has_sha1_file(sha1)) | |
409 | return -1; | |
410 | ||
411 | o = lookup_object(sha1); | |
412 | if (!(o && o->parsed)) | |
413 | o = parse_object(sha1); | |
414 | if (!o) | |
415 | die("oops (%s)", sha1_to_hex(sha1)); | |
416 | if (o->type == OBJ_COMMIT) { | |
417 | struct commit_list *parents; | |
418 | struct commit *commit = (struct commit *)o; | |
419 | if (o->flags & THEY_HAVE) | |
420 | we_knew_they_have = 1; | |
421 | else | |
422 | o->flags |= THEY_HAVE; | |
423 | if (!oldest_have || (commit->date < oldest_have)) | |
424 | oldest_have = commit->date; | |
425 | for (parents = commit->parents; | |
426 | parents; | |
427 | parents = parents->next) | |
428 | parents->item->object.flags |= THEY_HAVE; | |
429 | } | |
430 | if (!we_knew_they_have) { | |
431 | add_object_array(o, NULL, &have_obj); | |
432 | return 1; | |
433 | } | |
434 | return 0; | |
435 | } | |
436 | ||
437 | static int reachable(struct commit *want) | |
438 | { | |
439 | struct commit_list *work = NULL; | |
440 | ||
441 | insert_by_date(want, &work); | |
442 | while (work) { | |
443 | struct commit_list *list = work->next; | |
444 | struct commit *commit = work->item; | |
445 | free(work); | |
446 | work = list; | |
447 | ||
448 | if (commit->object.flags & THEY_HAVE) { | |
449 | want->object.flags |= COMMON_KNOWN; | |
450 | break; | |
451 | } | |
452 | if (!commit->object.parsed) | |
453 | parse_object(commit->object.sha1); | |
454 | if (commit->object.flags & REACHABLE) | |
455 | continue; | |
456 | commit->object.flags |= REACHABLE; | |
457 | if (commit->date < oldest_have) | |
458 | continue; | |
459 | for (list = commit->parents; list; list = list->next) { | |
460 | struct commit *parent = list->item; | |
461 | if (!(parent->object.flags & REACHABLE)) | |
462 | insert_by_date(parent, &work); | |
463 | } | |
464 | } | |
465 | want->object.flags |= REACHABLE; | |
466 | clear_commit_marks(want, REACHABLE); | |
467 | free_commit_list(work); | |
468 | return (want->object.flags & COMMON_KNOWN); | |
469 | } | |
470 | ||
471 | static int ok_to_give_up(void) | |
472 | { | |
473 | int i; | |
474 | ||
475 | if (!have_obj.nr) | |
476 | return 0; | |
477 | ||
478 | for (i = 0; i < want_obj.nr; i++) { | |
479 | struct object *want = want_obj.objects[i].item; | |
480 | ||
481 | if (want->flags & COMMON_KNOWN) | |
482 | continue; | |
483 | want = deref_tag(want, "a want line", 0); | |
484 | if (!want || want->type != OBJ_COMMIT) { | |
485 | /* no way to tell if this is reachable by | |
486 | * looking at the ancestry chain alone, so | |
487 | * leave a note to ourselves not to worry about | |
488 | * this object anymore. | |
489 | */ | |
490 | want_obj.objects[i].item->flags |= COMMON_KNOWN; | |
491 | continue; | |
492 | } | |
493 | if (!reachable((struct commit *)want)) | |
494 | return 0; | |
495 | } | |
496 | return 1; | |
497 | } | |
498 | ||
499 | static int get_common_commits(void) | |
500 | { | |
501 | static char line[1000]; | |
502 | unsigned char sha1[20]; | |
503 | char hex[41], last_hex[41]; | |
504 | ||
505 | save_commit_buffer = 0; | |
506 | ||
507 | for (;;) { | |
508 | int len = packet_read_line(0, line, sizeof(line)); | |
509 | reset_timeout(); | |
510 | ||
511 | if (!len) { | |
512 | if (have_obj.nr == 0 || multi_ack) | |
513 | packet_write(1, "NAK\n"); | |
514 | continue; | |
515 | } | |
516 | strip(line, len); | |
517 | if (!prefixcmp(line, "have ")) { | |
518 | switch (got_sha1(line+5, sha1)) { | |
519 | case -1: /* they have what we do not */ | |
520 | if (multi_ack && ok_to_give_up()) | |
521 | packet_write(1, "ACK %s continue\n", | |
522 | sha1_to_hex(sha1)); | |
523 | break; | |
524 | default: | |
525 | memcpy(hex, sha1_to_hex(sha1), 41); | |
526 | if (multi_ack) { | |
527 | const char *msg = "ACK %s continue\n"; | |
528 | packet_write(1, msg, hex); | |
529 | memcpy(last_hex, hex, 41); | |
530 | } | |
531 | else if (have_obj.nr == 1) | |
532 | packet_write(1, "ACK %s\n", hex); | |
533 | break; | |
534 | } | |
535 | continue; | |
536 | } | |
537 | if (!strcmp(line, "done")) { | |
538 | if (have_obj.nr > 0) { | |
539 | if (multi_ack) | |
540 | packet_write(1, "ACK %s\n", last_hex); | |
541 | return 0; | |
542 | } | |
543 | packet_write(1, "NAK\n"); | |
544 | return -1; | |
545 | } | |
546 | die("git upload-pack: expected SHA1 list, got '%s'", line); | |
547 | } | |
548 | } | |
549 | ||
550 | static void receive_needs(void) | |
551 | { | |
552 | struct object_array shallows = {0, 0, NULL}; | |
553 | static char line[1000]; | |
554 | int len, depth = 0; | |
555 | ||
556 | shallow_nr = 0; | |
557 | if (debug_fd) | |
558 | write_str_in_full(debug_fd, "#S\n"); | |
559 | for (;;) { | |
560 | struct object *o; | |
561 | unsigned char sha1_buf[20]; | |
562 | len = packet_read_line(0, line, sizeof(line)); | |
563 | reset_timeout(); | |
564 | if (!len) | |
565 | break; | |
566 | if (debug_fd) | |
567 | write_in_full(debug_fd, line, len); | |
568 | ||
569 | if (!prefixcmp(line, "shallow ")) { | |
570 | unsigned char sha1[20]; | |
571 | struct object *object; | |
572 | if (get_sha1(line + 8, sha1)) | |
573 | die("invalid shallow line: %s", line); | |
574 | object = parse_object(sha1); | |
575 | if (!object) | |
576 | die("did not find object for %s", line); | |
577 | object->flags |= CLIENT_SHALLOW; | |
578 | add_object_array(object, NULL, &shallows); | |
579 | continue; | |
580 | } | |
581 | if (!prefixcmp(line, "deepen ")) { | |
582 | char *end; | |
583 | depth = strtol(line + 7, &end, 0); | |
584 | if (end == line + 7 || depth <= 0) | |
585 | die("Invalid deepen: %s", line); | |
586 | continue; | |
587 | } | |
588 | if (prefixcmp(line, "want ") || | |
589 | get_sha1_hex(line+5, sha1_buf)) | |
590 | die("git upload-pack: protocol error, " | |
591 | "expected to get sha, not '%s'", line); | |
592 | if (strstr(line+45, "multi_ack")) | |
593 | multi_ack = 1; | |
594 | if (strstr(line+45, "thin-pack")) | |
595 | use_thin_pack = 1; | |
596 | if (strstr(line+45, "ofs-delta")) | |
597 | use_ofs_delta = 1; | |
598 | if (strstr(line+45, "side-band-64k")) | |
599 | use_sideband = LARGE_PACKET_MAX; | |
600 | else if (strstr(line+45, "side-band")) | |
601 | use_sideband = DEFAULT_PACKET_MAX; | |
602 | if (strstr(line+45, "no-progress")) | |
603 | no_progress = 1; | |
604 | if (strstr(line+45, "include-tag")) | |
605 | use_include_tag = 1; | |
606 | ||
607 | /* We have sent all our refs already, and the other end | |
608 | * should have chosen out of them; otherwise they are | |
609 | * asking for nonsense. | |
610 | * | |
611 | * Hmph. We may later want to allow "want" line that | |
612 | * asks for something like "master~10" (symbolic)... | |
613 | * would it make sense? I don't know. | |
614 | */ | |
615 | o = lookup_object(sha1_buf); | |
616 | if (!o || !(o->flags & OUR_REF)) | |
617 | die("git upload-pack: not our ref %s", line+5); | |
618 | if (!(o->flags & WANTED)) { | |
619 | o->flags |= WANTED; | |
620 | add_object_array(o, NULL, &want_obj); | |
621 | } | |
622 | } | |
623 | if (debug_fd) | |
624 | write_str_in_full(debug_fd, "#E\n"); | |
625 | ||
626 | if (!use_sideband && daemon_mode) | |
627 | no_progress = 1; | |
628 | ||
629 | if (depth == 0 && shallows.nr == 0) | |
630 | return; | |
631 | if (depth > 0) { | |
632 | struct commit_list *result, *backup; | |
633 | int i; | |
634 | backup = result = get_shallow_commits(&want_obj, depth, | |
635 | SHALLOW, NOT_SHALLOW); | |
636 | while (result) { | |
637 | struct object *object = &result->item->object; | |
638 | if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) { | |
639 | packet_write(1, "shallow %s", | |
640 | sha1_to_hex(object->sha1)); | |
641 | register_shallow(object->sha1); | |
642 | shallow_nr++; | |
643 | } | |
644 | result = result->next; | |
645 | } | |
646 | free_commit_list(backup); | |
647 | for (i = 0; i < shallows.nr; i++) { | |
648 | struct object *object = shallows.objects[i].item; | |
649 | if (object->flags & NOT_SHALLOW) { | |
650 | struct commit_list *parents; | |
651 | packet_write(1, "unshallow %s", | |
652 | sha1_to_hex(object->sha1)); | |
653 | object->flags &= ~CLIENT_SHALLOW; | |
654 | /* make sure the real parents are parsed */ | |
655 | unregister_shallow(object->sha1); | |
656 | object->parsed = 0; | |
657 | if (parse_commit((struct commit *)object)) | |
658 | die("invalid commit"); | |
659 | parents = ((struct commit *)object)->parents; | |
660 | while (parents) { | |
661 | add_object_array(&parents->item->object, | |
662 | NULL, &want_obj); | |
663 | parents = parents->next; | |
664 | } | |
665 | add_object_array(object, NULL, &extra_edge_obj); | |
666 | } | |
667 | /* make sure commit traversal conforms to client */ | |
668 | register_shallow(object->sha1); | |
669 | } | |
670 | packet_flush(1); | |
671 | } else | |
672 | if (shallows.nr > 0) { | |
673 | int i; | |
674 | for (i = 0; i < shallows.nr; i++) | |
675 | register_shallow(shallows.objects[i].item->sha1); | |
676 | } | |
677 | ||
678 | shallow_nr += shallows.nr; | |
679 | free(shallows.objects); | |
680 | } | |
681 | ||
682 | static int send_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) | |
683 | { | |
684 | static const char *capabilities = "multi_ack thin-pack side-band" | |
685 | " side-band-64k ofs-delta shallow no-progress" | |
686 | " include-tag"; | |
687 | struct object *o = parse_object(sha1); | |
688 | ||
689 | if (!o) | |
690 | die("git upload-pack: cannot find object %s:", sha1_to_hex(sha1)); | |
691 | ||
692 | if (capabilities) | |
693 | packet_write(1, "%s %s%c%s\n", sha1_to_hex(sha1), refname, | |
694 | 0, capabilities); | |
695 | else | |
696 | packet_write(1, "%s %s\n", sha1_to_hex(sha1), refname); | |
697 | capabilities = NULL; | |
698 | if (!(o->flags & OUR_REF)) { | |
699 | o->flags |= OUR_REF; | |
700 | nr_our_refs++; | |
701 | } | |
702 | if (o->type == OBJ_TAG) { | |
703 | o = deref_tag(o, refname, 0); | |
704 | if (o) | |
705 | packet_write(1, "%s %s^{}\n", sha1_to_hex(o->sha1), refname); | |
706 | } | |
707 | return 0; | |
708 | } | |
709 | ||
710 | static void upload_pack(void) | |
711 | { | |
712 | reset_timeout(); | |
713 | head_ref(send_ref, NULL); | |
714 | for_each_ref(send_ref, NULL); | |
715 | packet_flush(1); | |
716 | receive_needs(); | |
717 | if (want_obj.nr) { | |
718 | get_common_commits(); | |
719 | create_pack_file(); | |
720 | } | |
721 | } | |
722 | ||
723 | int main(int argc, char **argv) | |
724 | { | |
725 | char *dir; | |
726 | int i; | |
727 | int strict = 0; | |
728 | ||
729 | git_extract_argv0_path(argv[0]); | |
730 | read_replace_refs = 0; | |
731 | ||
732 | for (i = 1; i < argc; i++) { | |
733 | char *arg = argv[i]; | |
734 | ||
735 | if (arg[0] != '-') | |
736 | break; | |
737 | if (!strcmp(arg, "--strict")) { | |
738 | strict = 1; | |
739 | continue; | |
740 | } | |
741 | if (!prefixcmp(arg, "--timeout=")) { | |
742 | timeout = atoi(arg+10); | |
743 | daemon_mode = 1; | |
744 | continue; | |
745 | } | |
746 | if (!strcmp(arg, "--")) { | |
747 | i++; | |
748 | break; | |
749 | } | |
750 | } | |
751 | ||
752 | if (i != argc-1) | |
753 | usage(upload_pack_usage); | |
754 | ||
755 | setup_path(); | |
756 | ||
757 | dir = argv[i]; | |
758 | ||
759 | if (!enter_repo(dir, strict)) | |
760 | die("'%s' does not appear to be a git repository", dir); | |
761 | if (is_repository_shallow()) | |
762 | die("attempt to fetch/clone from a shallow repository"); | |
763 | if (getenv("GIT_DEBUG_SEND_PACK")) | |
764 | debug_fd = atoi(getenv("GIT_DEBUG_SEND_PACK")); | |
765 | upload_pack(); | |
766 | return 0; | |
767 | } |