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#include "sigchain.h"
14#include "version.h"
15
16static const char upload_pack_usage[] = "git upload-pack [--strict] [--timeout=<n>] <dir>";
17
18/* bits #0..7 in revision.h, #8..10 in commit.c */
19#define THEY_HAVE (1u << 11)
20#define OUR_REF (1u << 12)
21#define WANTED (1u << 13)
22#define COMMON_KNOWN (1u << 14)
23#define REACHABLE (1u << 15)
24
25#define SHALLOW (1u << 16)
26#define NOT_SHALLOW (1u << 17)
27#define CLIENT_SHALLOW (1u << 18)
28
29static unsigned long oldest_have;
30
31static int multi_ack, nr_our_refs;
32static int no_done;
33static int use_thin_pack, use_ofs_delta, use_include_tag;
34static int no_progress, daemon_mode;
35static int shallow_nr;
36static struct object_array have_obj;
37static struct object_array want_obj;
38static struct object_array extra_edge_obj;
39static unsigned int timeout;
40/* 0 for no sideband,
41 * otherwise maximum packet size (up to 65520 bytes).
42 */
43static int use_sideband;
44static int debug_fd;
45static int advertise_refs;
46static int stateless_rpc;
47
48static void reset_timeout(void)
49{
50 alarm(timeout);
51}
52
53static int strip(char *line, int len)
54{
55 if (len && line[len-1] == '\n')
56 line[--len] = 0;
57 return len;
58}
59
60static ssize_t send_client_data(int fd, const char *data, ssize_t sz)
61{
62 if (use_sideband)
63 return send_sideband(1, fd, data, sz, use_sideband);
64 if (fd == 3)
65 /* emergency quit */
66 fd = 2;
67 if (fd == 2) {
68 /* XXX: are we happy to lose stuff here? */
69 xwrite(fd, data, sz);
70 return sz;
71 }
72 return safe_write(fd, data, sz);
73}
74
75static FILE *pack_pipe = NULL;
76static void show_commit(struct commit *commit, void *data)
77{
78 if (commit->object.flags & BOUNDARY)
79 fputc('-', pack_pipe);
80 if (fputs(sha1_to_hex(commit->object.sha1), pack_pipe) < 0)
81 die("broken output pipe");
82 fputc('\n', pack_pipe);
83 fflush(pack_pipe);
84 free(commit->buffer);
85 commit->buffer = NULL;
86}
87
88static void show_object(struct object *obj,
89 const struct name_path *path, const char *component,
90 void *cb_data)
91{
92 show_object_with_name(pack_pipe, obj, path, component);
93}
94
95static void show_edge(struct commit *commit)
96{
97 fprintf(pack_pipe, "-%s\n", sha1_to_hex(commit->object.sha1));
98}
99
100static int do_rev_list(int in, int out, void *user_data)
101{
102 int i;
103 struct rev_info revs;
104
105 pack_pipe = xfdopen(out, "w");
106 init_revisions(&revs, NULL);
107 revs.tag_objects = 1;
108 revs.tree_objects = 1;
109 revs.blob_objects = 1;
110 if (use_thin_pack)
111 revs.edge_hint = 1;
112
113 for (i = 0; i < want_obj.nr; i++) {
114 struct object *o = want_obj.objects[i].item;
115 /* why??? */
116 o->flags &= ~UNINTERESTING;
117 add_pending_object(&revs, o, NULL);
118 }
119 for (i = 0; i < have_obj.nr; i++) {
120 struct object *o = have_obj.objects[i].item;
121 o->flags |= UNINTERESTING;
122 add_pending_object(&revs, o, NULL);
123 }
124 setup_revisions(0, NULL, &revs, NULL);
125 if (prepare_revision_walk(&revs))
126 die("revision walk setup failed");
127 mark_edges_uninteresting(revs.commits, &revs, show_edge);
128 if (use_thin_pack)
129 for (i = 0; i < extra_edge_obj.nr; i++)
130 fprintf(pack_pipe, "-%s\n", sha1_to_hex(
131 extra_edge_obj.objects[i].item->sha1));
132 traverse_commit_list(&revs, show_commit, show_object, NULL);
133 fflush(pack_pipe);
134 fclose(pack_pipe);
135 return 0;
136}
137
138static void create_pack_file(void)
139{
140 struct async rev_list;
141 struct child_process pack_objects;
142 int create_full_pack = (nr_our_refs == want_obj.nr && !have_obj.nr);
143 char data[8193], progress[128];
144 char abort_msg[] = "aborting due to possible repository "
145 "corruption on the remote side.";
146 int buffered = -1;
147 ssize_t sz;
148 const char *argv[10];
149 int arg = 0;
150
151 argv[arg++] = "pack-objects";
152 if (!shallow_nr) {
153 argv[arg++] = "--revs";
154 if (create_full_pack)
155 argv[arg++] = "--all";
156 else if (use_thin_pack)
157 argv[arg++] = "--thin";
158 }
159
160 argv[arg++] = "--stdout";
161 if (!no_progress)
162 argv[arg++] = "--progress";
163 if (use_ofs_delta)
164 argv[arg++] = "--delta-base-offset";
165 if (use_include_tag)
166 argv[arg++] = "--include-tag";
167 argv[arg++] = NULL;
168
169 memset(&pack_objects, 0, sizeof(pack_objects));
170 pack_objects.in = -1;
171 pack_objects.out = -1;
172 pack_objects.err = -1;
173 pack_objects.git_cmd = 1;
174 pack_objects.argv = argv;
175
176 if (start_command(&pack_objects))
177 die("git upload-pack: unable to fork git-pack-objects");
178
179 if (shallow_nr) {
180 memset(&rev_list, 0, sizeof(rev_list));
181 rev_list.proc = do_rev_list;
182 rev_list.out = pack_objects.in;
183 if (start_async(&rev_list))
184 die("git upload-pack: unable to fork git-rev-list");
185 }
186 else {
187 FILE *pipe_fd = xfdopen(pack_objects.in, "w");
188 if (!create_full_pack) {
189 int i;
190 for (i = 0; i < want_obj.nr; i++)
191 fprintf(pipe_fd, "%s\n", sha1_to_hex(want_obj.objects[i].item->sha1));
192 fprintf(pipe_fd, "--not\n");
193 for (i = 0; i < have_obj.nr; i++)
194 fprintf(pipe_fd, "%s\n", sha1_to_hex(have_obj.objects[i].item->sha1));
195 }
196
197 fprintf(pipe_fd, "\n");
198 fflush(pipe_fd);
199 fclose(pipe_fd);
200 }
201
202
203 /* We read from pack_objects.err to capture stderr output for
204 * progress bar, and pack_objects.out to capture the pack data.
205 */
206
207 while (1) {
208 struct pollfd pfd[2];
209 int pe, pu, pollsize;
210
211 reset_timeout();
212
213 pollsize = 0;
214 pe = pu = -1;
215
216 if (0 <= pack_objects.out) {
217 pfd[pollsize].fd = pack_objects.out;
218 pfd[pollsize].events = POLLIN;
219 pu = pollsize;
220 pollsize++;
221 }
222 if (0 <= pack_objects.err) {
223 pfd[pollsize].fd = pack_objects.err;
224 pfd[pollsize].events = POLLIN;
225 pe = pollsize;
226 pollsize++;
227 }
228
229 if (!pollsize)
230 break;
231
232 if (poll(pfd, pollsize, -1) < 0) {
233 if (errno != EINTR) {
234 error("poll failed, resuming: %s",
235 strerror(errno));
236 sleep(1);
237 }
238 continue;
239 }
240 if (0 <= pe && (pfd[pe].revents & (POLLIN|POLLHUP))) {
241 /* Status ready; we ship that in the side-band
242 * or dump to the standard error.
243 */
244 sz = xread(pack_objects.err, progress,
245 sizeof(progress));
246 if (0 < sz)
247 send_client_data(2, progress, sz);
248 else if (sz == 0) {
249 close(pack_objects.err);
250 pack_objects.err = -1;
251 }
252 else
253 goto fail;
254 /* give priority to status messages */
255 continue;
256 }
257 if (0 <= pu && (pfd[pu].revents & (POLLIN|POLLHUP))) {
258 /* Data ready; we keep the last byte to ourselves
259 * in case we detect broken rev-list, so that we
260 * can leave the stream corrupted. This is
261 * unfortunate -- unpack-objects would happily
262 * accept a valid packdata with trailing garbage,
263 * so appending garbage after we pass all the
264 * pack data is not good enough to signal
265 * breakage to downstream.
266 */
267 char *cp = data;
268 ssize_t outsz = 0;
269 if (0 <= buffered) {
270 *cp++ = buffered;
271 outsz++;
272 }
273 sz = xread(pack_objects.out, cp,
274 sizeof(data) - outsz);
275 if (0 < sz)
276 ;
277 else if (sz == 0) {
278 close(pack_objects.out);
279 pack_objects.out = -1;
280 }
281 else
282 goto fail;
283 sz += outsz;
284 if (1 < sz) {
285 buffered = data[sz-1] & 0xFF;
286 sz--;
287 }
288 else
289 buffered = -1;
290 sz = send_client_data(1, data, sz);
291 if (sz < 0)
292 goto fail;
293 }
294 }
295
296 if (finish_command(&pack_objects)) {
297 error("git upload-pack: git-pack-objects died with error.");
298 goto fail;
299 }
300 if (shallow_nr && finish_async(&rev_list))
301 goto fail; /* error was already reported */
302
303 /* flush the data */
304 if (0 <= buffered) {
305 data[0] = buffered;
306 sz = send_client_data(1, data, 1);
307 if (sz < 0)
308 goto fail;
309 fprintf(stderr, "flushed.\n");
310 }
311 if (use_sideband)
312 packet_flush(1);
313 return;
314
315 fail:
316 send_client_data(3, abort_msg, sizeof(abort_msg));
317 die("git upload-pack: %s", abort_msg);
318}
319
320static int got_sha1(char *hex, unsigned char *sha1)
321{
322 struct object *o;
323 int we_knew_they_have = 0;
324
325 if (get_sha1_hex(hex, sha1))
326 die("git upload-pack: expected SHA1 object, got '%s'", hex);
327 if (!has_sha1_file(sha1))
328 return -1;
329
330 o = parse_object(sha1);
331 if (!o)
332 die("oops (%s)", sha1_to_hex(sha1));
333 if (o->type == OBJ_COMMIT) {
334 struct commit_list *parents;
335 struct commit *commit = (struct commit *)o;
336 if (o->flags & THEY_HAVE)
337 we_knew_they_have = 1;
338 else
339 o->flags |= THEY_HAVE;
340 if (!oldest_have || (commit->date < oldest_have))
341 oldest_have = commit->date;
342 for (parents = commit->parents;
343 parents;
344 parents = parents->next)
345 parents->item->object.flags |= THEY_HAVE;
346 }
347 if (!we_knew_they_have) {
348 add_object_array(o, NULL, &have_obj);
349 return 1;
350 }
351 return 0;
352}
353
354static int reachable(struct commit *want)
355{
356 struct commit_list *work = NULL;
357
358 commit_list_insert_by_date(want, &work);
359 while (work) {
360 struct commit_list *list = work->next;
361 struct commit *commit = work->item;
362 free(work);
363 work = list;
364
365 if (commit->object.flags & THEY_HAVE) {
366 want->object.flags |= COMMON_KNOWN;
367 break;
368 }
369 if (!commit->object.parsed)
370 parse_object(commit->object.sha1);
371 if (commit->object.flags & REACHABLE)
372 continue;
373 commit->object.flags |= REACHABLE;
374 if (commit->date < oldest_have)
375 continue;
376 for (list = commit->parents; list; list = list->next) {
377 struct commit *parent = list->item;
378 if (!(parent->object.flags & REACHABLE))
379 commit_list_insert_by_date(parent, &work);
380 }
381 }
382 want->object.flags |= REACHABLE;
383 clear_commit_marks(want, REACHABLE);
384 free_commit_list(work);
385 return (want->object.flags & COMMON_KNOWN);
386}
387
388static int ok_to_give_up(void)
389{
390 int i;
391
392 if (!have_obj.nr)
393 return 0;
394
395 for (i = 0; i < want_obj.nr; i++) {
396 struct object *want = want_obj.objects[i].item;
397
398 if (want->flags & COMMON_KNOWN)
399 continue;
400 want = deref_tag(want, "a want line", 0);
401 if (!want || want->type != OBJ_COMMIT) {
402 /* no way to tell if this is reachable by
403 * looking at the ancestry chain alone, so
404 * leave a note to ourselves not to worry about
405 * this object anymore.
406 */
407 want_obj.objects[i].item->flags |= COMMON_KNOWN;
408 continue;
409 }
410 if (!reachable((struct commit *)want))
411 return 0;
412 }
413 return 1;
414}
415
416static int get_common_commits(void)
417{
418 static char line[1000];
419 unsigned char sha1[20];
420 char last_hex[41];
421 int got_common = 0;
422 int got_other = 0;
423 int sent_ready = 0;
424
425 save_commit_buffer = 0;
426
427 for (;;) {
428 int len = packet_read_line(0, line, sizeof(line));
429 reset_timeout();
430
431 if (!len) {
432 if (multi_ack == 2 && got_common
433 && !got_other && ok_to_give_up()) {
434 sent_ready = 1;
435 packet_write(1, "ACK %s ready\n", last_hex);
436 }
437 if (have_obj.nr == 0 || multi_ack)
438 packet_write(1, "NAK\n");
439
440 if (no_done && sent_ready) {
441 packet_write(1, "ACK %s\n", last_hex);
442 return 0;
443 }
444 if (stateless_rpc)
445 exit(0);
446 got_common = 0;
447 got_other = 0;
448 continue;
449 }
450 strip(line, len);
451 if (!prefixcmp(line, "have ")) {
452 switch (got_sha1(line+5, sha1)) {
453 case -1: /* they have what we do not */
454 got_other = 1;
455 if (multi_ack && ok_to_give_up()) {
456 const char *hex = sha1_to_hex(sha1);
457 if (multi_ack == 2) {
458 sent_ready = 1;
459 packet_write(1, "ACK %s ready\n", hex);
460 } else
461 packet_write(1, "ACK %s continue\n", hex);
462 }
463 break;
464 default:
465 got_common = 1;
466 memcpy(last_hex, sha1_to_hex(sha1), 41);
467 if (multi_ack == 2)
468 packet_write(1, "ACK %s common\n", last_hex);
469 else if (multi_ack)
470 packet_write(1, "ACK %s continue\n", last_hex);
471 else if (have_obj.nr == 1)
472 packet_write(1, "ACK %s\n", last_hex);
473 break;
474 }
475 continue;
476 }
477 if (!strcmp(line, "done")) {
478 if (have_obj.nr > 0) {
479 if (multi_ack)
480 packet_write(1, "ACK %s\n", last_hex);
481 return 0;
482 }
483 packet_write(1, "NAK\n");
484 return -1;
485 }
486 die("git upload-pack: expected SHA1 list, got '%s'", line);
487 }
488}
489
490static void check_non_tip(void)
491{
492 static const char *argv[] = {
493 "rev-list", "--stdin", NULL,
494 };
495 static struct child_process cmd;
496 struct object *o;
497 char namebuf[42]; /* ^ + SHA-1 + LF */
498 int i;
499
500 /* In the normal in-process case non-tip request can never happen */
501 if (!stateless_rpc)
502 goto error;
503
504 cmd.argv = argv;
505 cmd.git_cmd = 1;
506 cmd.no_stderr = 1;
507 cmd.in = -1;
508 cmd.out = -1;
509
510 if (start_command(&cmd))
511 goto error;
512
513 /*
514 * If rev-list --stdin encounters an unknown commit, it
515 * terminates, which will cause SIGPIPE in the write loop
516 * below.
517 */
518 sigchain_push(SIGPIPE, SIG_IGN);
519
520 namebuf[0] = '^';
521 namebuf[41] = '\n';
522 for (i = get_max_object_index(); 0 < i; ) {
523 o = get_indexed_object(--i);
524 if (!o)
525 continue;
526 if (!(o->flags & OUR_REF))
527 continue;
528 memcpy(namebuf + 1, sha1_to_hex(o->sha1), 40);
529 if (write_in_full(cmd.in, namebuf, 42) < 0)
530 goto error;
531 }
532 namebuf[40] = '\n';
533 for (i = 0; i < want_obj.nr; i++) {
534 o = want_obj.objects[i].item;
535 if (o->flags & OUR_REF)
536 continue;
537 memcpy(namebuf, sha1_to_hex(o->sha1), 40);
538 if (write_in_full(cmd.in, namebuf, 41) < 0)
539 goto error;
540 }
541 close(cmd.in);
542
543 sigchain_pop(SIGPIPE);
544
545 /*
546 * The commits out of the rev-list are not ancestors of
547 * our ref.
548 */
549 i = read_in_full(cmd.out, namebuf, 1);
550 if (i)
551 goto error;
552 close(cmd.out);
553
554 /*
555 * rev-list may have died by encountering a bad commit
556 * in the history, in which case we do want to bail out
557 * even when it showed no commit.
558 */
559 if (finish_command(&cmd))
560 goto error;
561
562 /* All the non-tip ones are ancestors of what we advertised */
563 return;
564
565error:
566 /* Pick one of them (we know there at least is one) */
567 for (i = 0; i < want_obj.nr; i++) {
568 o = want_obj.objects[i].item;
569 if (!(o->flags & OUR_REF))
570 die("git upload-pack: not our ref %s",
571 sha1_to_hex(o->sha1));
572 }
573}
574
575static void receive_needs(void)
576{
577 struct object_array shallows = OBJECT_ARRAY_INIT;
578 static char line[1000];
579 int len, depth = 0;
580 int has_non_tip = 0;
581
582 shallow_nr = 0;
583 if (debug_fd)
584 write_str_in_full(debug_fd, "#S\n");
585 for (;;) {
586 struct object *o;
587 const char *features;
588 unsigned char sha1_buf[20];
589 len = packet_read_line(0, line, sizeof(line));
590 reset_timeout();
591 if (!len)
592 break;
593 if (debug_fd)
594 write_in_full(debug_fd, line, len);
595
596 if (!prefixcmp(line, "shallow ")) {
597 unsigned char sha1[20];
598 struct object *object;
599 if (get_sha1(line + 8, sha1))
600 die("invalid shallow line: %s", line);
601 object = parse_object(sha1);
602 if (!object)
603 die("did not find object for %s", line);
604 object->flags |= CLIENT_SHALLOW;
605 add_object_array(object, NULL, &shallows);
606 continue;
607 }
608 if (!prefixcmp(line, "deepen ")) {
609 char *end;
610 depth = strtol(line + 7, &end, 0);
611 if (end == line + 7 || depth <= 0)
612 die("Invalid deepen: %s", line);
613 continue;
614 }
615 if (prefixcmp(line, "want ") ||
616 get_sha1_hex(line+5, sha1_buf))
617 die("git upload-pack: protocol error, "
618 "expected to get sha, not '%s'", line);
619
620 features = line + 45;
621
622 if (parse_feature_request(features, "multi_ack_detailed"))
623 multi_ack = 2;
624 else if (parse_feature_request(features, "multi_ack"))
625 multi_ack = 1;
626 if (parse_feature_request(features, "no-done"))
627 no_done = 1;
628 if (parse_feature_request(features, "thin-pack"))
629 use_thin_pack = 1;
630 if (parse_feature_request(features, "ofs-delta"))
631 use_ofs_delta = 1;
632 if (parse_feature_request(features, "side-band-64k"))
633 use_sideband = LARGE_PACKET_MAX;
634 else if (parse_feature_request(features, "side-band"))
635 use_sideband = DEFAULT_PACKET_MAX;
636 if (parse_feature_request(features, "no-progress"))
637 no_progress = 1;
638 if (parse_feature_request(features, "include-tag"))
639 use_include_tag = 1;
640
641 o = lookup_object(sha1_buf);
642 if (!o || !parse_object(o->sha1))
643 die("git upload-pack: not our ref %s",
644 sha1_to_hex(sha1_buf));
645 if (!(o->flags & WANTED)) {
646 o->flags |= WANTED;
647 if (!(o->flags & OUR_REF))
648 has_non_tip = 1;
649 add_object_array(o, NULL, &want_obj);
650 }
651 }
652 if (debug_fd)
653 write_str_in_full(debug_fd, "#E\n");
654
655 /*
656 * We have sent all our refs already, and the other end
657 * should have chosen out of them. When we are operating
658 * in the stateless RPC mode, however, their choice may
659 * have been based on the set of older refs advertised
660 * by another process that handled the initial request.
661 */
662 if (has_non_tip)
663 check_non_tip();
664
665 if (!use_sideband && daemon_mode)
666 no_progress = 1;
667
668 if (depth == 0 && shallows.nr == 0)
669 return;
670 if (depth > 0) {
671 struct commit_list *result, *backup;
672 int i;
673 backup = result = get_shallow_commits(&want_obj, depth,
674 SHALLOW, NOT_SHALLOW);
675 while (result) {
676 struct object *object = &result->item->object;
677 if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) {
678 packet_write(1, "shallow %s",
679 sha1_to_hex(object->sha1));
680 register_shallow(object->sha1);
681 shallow_nr++;
682 }
683 result = result->next;
684 }
685 free_commit_list(backup);
686 for (i = 0; i < shallows.nr; i++) {
687 struct object *object = shallows.objects[i].item;
688 if (object->flags & NOT_SHALLOW) {
689 struct commit_list *parents;
690 packet_write(1, "unshallow %s",
691 sha1_to_hex(object->sha1));
692 object->flags &= ~CLIENT_SHALLOW;
693 /* make sure the real parents are parsed */
694 unregister_shallow(object->sha1);
695 object->parsed = 0;
696 if (parse_commit((struct commit *)object))
697 die("invalid commit");
698 parents = ((struct commit *)object)->parents;
699 while (parents) {
700 add_object_array(&parents->item->object,
701 NULL, &want_obj);
702 parents = parents->next;
703 }
704 add_object_array(object, NULL, &extra_edge_obj);
705 }
706 /* make sure commit traversal conforms to client */
707 register_shallow(object->sha1);
708 }
709 packet_flush(1);
710 } else
711 if (shallows.nr > 0) {
712 int i;
713 for (i = 0; i < shallows.nr; i++)
714 register_shallow(shallows.objects[i].item->sha1);
715 }
716
717 shallow_nr += shallows.nr;
718 free(shallows.objects);
719}
720
721static int send_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
722{
723 static const char *capabilities = "multi_ack thin-pack side-band"
724 " side-band-64k ofs-delta shallow no-progress"
725 " include-tag multi_ack_detailed";
726 struct object *o = lookup_unknown_object(sha1);
727 const char *refname_nons = strip_namespace(refname);
728 unsigned char peeled[20];
729
730 if (capabilities)
731 packet_write(1, "%s %s%c%s%s agent=%s\n",
732 sha1_to_hex(sha1), refname_nons,
733 0, capabilities,
734 stateless_rpc ? " no-done" : "",
735 git_user_agent_sanitized());
736 else
737 packet_write(1, "%s %s\n", sha1_to_hex(sha1), refname_nons);
738 capabilities = NULL;
739 if (!(o->flags & OUR_REF)) {
740 o->flags |= OUR_REF;
741 nr_our_refs++;
742 }
743 if (!peel_ref(refname, peeled))
744 packet_write(1, "%s %s^{}\n", sha1_to_hex(peeled), refname_nons);
745 return 0;
746}
747
748static int mark_our_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
749{
750 struct object *o = parse_object(sha1);
751 if (!o)
752 die("git upload-pack: cannot find object %s:", sha1_to_hex(sha1));
753 if (!(o->flags & OUR_REF)) {
754 o->flags |= OUR_REF;
755 nr_our_refs++;
756 }
757 return 0;
758}
759
760static void upload_pack(void)
761{
762 if (advertise_refs || !stateless_rpc) {
763 reset_timeout();
764 head_ref_namespaced(send_ref, NULL);
765 for_each_namespaced_ref(send_ref, NULL);
766 packet_flush(1);
767 } else {
768 head_ref_namespaced(mark_our_ref, NULL);
769 for_each_namespaced_ref(mark_our_ref, NULL);
770 }
771 if (advertise_refs)
772 return;
773
774 receive_needs();
775 if (want_obj.nr) {
776 get_common_commits();
777 create_pack_file();
778 }
779}
780
781int main(int argc, char **argv)
782{
783 char *dir;
784 int i;
785 int strict = 0;
786
787 git_setup_gettext();
788
789 packet_trace_identity("upload-pack");
790 git_extract_argv0_path(argv[0]);
791 read_replace_refs = 0;
792
793 for (i = 1; i < argc; i++) {
794 char *arg = argv[i];
795
796 if (arg[0] != '-')
797 break;
798 if (!strcmp(arg, "--advertise-refs")) {
799 advertise_refs = 1;
800 continue;
801 }
802 if (!strcmp(arg, "--stateless-rpc")) {
803 stateless_rpc = 1;
804 continue;
805 }
806 if (!strcmp(arg, "--strict")) {
807 strict = 1;
808 continue;
809 }
810 if (!prefixcmp(arg, "--timeout=")) {
811 timeout = atoi(arg+10);
812 daemon_mode = 1;
813 continue;
814 }
815 if (!strcmp(arg, "--")) {
816 i++;
817 break;
818 }
819 }
820
821 if (i != argc-1)
822 usage(upload_pack_usage);
823
824 setup_path();
825
826 dir = argv[i];
827
828 if (!enter_repo(dir, strict))
829 die("'%s' does not appear to be a git repository", dir);
830 if (is_repository_shallow())
831 die("attempt to fetch/clone from a shallow repository");
832 if (getenv("GIT_DEBUG_SEND_PACK"))
833 debug_fd = atoi(getenv("GIT_DEBUG_SEND_PACK"));
834 upload_pack();
835 return 0;
836}