1 #include "git-compat-util.h"
3 #include "environment.h"
9 #include "repository.h"
10 #include "object-store.h"
11 #include "oid-array.h"
17 #include "list-objects.h"
18 #include "list-objects-filter.h"
19 #include "list-objects-filter-options.h"
20 #include "run-command.h"
24 #include "string-list.h"
27 #include "prio-queue.h"
30 #include "upload-pack.h"
32 #include "commit-graph.h"
33 #include "commit-reach.h"
36 #include "write-or-die.h"
38 /* Remember to update object flag allocation in object.h */
39 #define THEY_HAVE (1u << 11)
40 #define OUR_REF (1u << 12)
41 #define WANTED (1u << 13)
42 #define COMMON_KNOWN (1u << 14)
44 #define SHALLOW (1u << 16)
45 #define NOT_SHALLOW (1u << 17)
46 #define CLIENT_SHALLOW (1u << 18)
47 #define HIDDEN_REF (1u << 19)
49 #define ALL_FLAGS (THEY_HAVE | OUR_REF | WANTED | COMMON_KNOWN | SHALLOW | \
50 NOT_SHALLOW | CLIENT_SHALLOW | HIDDEN_REF)
52 /* Enum for allowed unadvertised object request (UOR) */
54 /* Allow specifying sha1 if it is a ref tip. */
55 ALLOW_TIP_SHA1
= 0x01,
56 /* Allow request of a sha1 if it is reachable from a ref (possibly hidden ref). */
57 ALLOW_REACHABLE_SHA1
= 0x02,
58 /* Allow request of any sha1. Implies ALLOW_TIP_SHA1 and ALLOW_REACHABLE_SHA1. */
63 * Please annotate, and if possible group together, fields used only
64 * for protocol v0 or only for protocol v2.
66 struct upload_pack_data
{
67 struct string_list symref
; /* v0 only */
68 struct object_array want_obj
;
69 struct object_array have_obj
;
70 struct oid_array haves
; /* v2 only */
71 struct string_list wanted_refs
; /* v2 only */
72 struct string_list hidden_refs
;
74 struct object_array shallows
;
75 struct string_list deepen_not
;
76 struct object_array extra_edge_obj
;
78 timestamp_t deepen_since
;
83 timestamp_t oldest_have
;
85 unsigned int timeout
; /* v0 only */
89 MULTI_ACK_DETAILED
= 2
90 } multi_ack
; /* v0 only */
92 /* 0 for no sideband, otherwise DEFAULT_PACKET_MAX or LARGE_PACKET_MAX */
95 struct string_list uri_protocols
;
96 enum allow_uor allow_uor
;
98 struct list_objects_filter_options filter_options
;
99 struct string_list allowed_filters
;
101 struct packet_writer writer
;
103 const char *pack_objects_hook
;
105 unsigned stateless_rpc
: 1; /* v0 only */
106 unsigned no_done
: 1; /* v0 only */
107 unsigned daemon_mode
: 1; /* v0 only */
108 unsigned filter_capability_requested
: 1; /* v0 only */
110 unsigned use_thin_pack
: 1;
111 unsigned use_ofs_delta
: 1;
112 unsigned no_progress
: 1;
113 unsigned use_include_tag
: 1;
114 unsigned wait_for_done
: 1;
115 unsigned allow_filter
: 1;
116 unsigned allow_filter_fallback
: 1;
117 unsigned long tree_filter_max_depth
;
119 unsigned done
: 1; /* v2 only */
120 unsigned allow_ref_in_want
: 1; /* v2 only */
121 unsigned allow_sideband_all
: 1; /* v2 only */
122 unsigned advertise_sid
: 1;
123 unsigned sent_capabilities
: 1;
126 static void upload_pack_data_init(struct upload_pack_data
*data
)
128 struct string_list symref
= STRING_LIST_INIT_DUP
;
129 struct string_list wanted_refs
= STRING_LIST_INIT_DUP
;
130 struct string_list hidden_refs
= STRING_LIST_INIT_DUP
;
131 struct object_array want_obj
= OBJECT_ARRAY_INIT
;
132 struct object_array have_obj
= OBJECT_ARRAY_INIT
;
133 struct oid_array haves
= OID_ARRAY_INIT
;
134 struct object_array shallows
= OBJECT_ARRAY_INIT
;
135 struct string_list deepen_not
= STRING_LIST_INIT_DUP
;
136 struct string_list uri_protocols
= STRING_LIST_INIT_DUP
;
137 struct object_array extra_edge_obj
= OBJECT_ARRAY_INIT
;
138 struct string_list allowed_filters
= STRING_LIST_INIT_DUP
;
140 memset(data
, 0, sizeof(*data
));
141 data
->symref
= symref
;
142 data
->wanted_refs
= wanted_refs
;
143 data
->hidden_refs
= hidden_refs
;
144 data
->want_obj
= want_obj
;
145 data
->have_obj
= have_obj
;
147 data
->shallows
= shallows
;
148 data
->deepen_not
= deepen_not
;
149 data
->uri_protocols
= uri_protocols
;
150 data
->extra_edge_obj
= extra_edge_obj
;
151 data
->allowed_filters
= allowed_filters
;
152 data
->allow_filter_fallback
= 1;
153 data
->tree_filter_max_depth
= ULONG_MAX
;
154 packet_writer_init(&data
->writer
, 1);
155 list_objects_filter_init(&data
->filter_options
);
158 data
->advertise_sid
= 0;
161 static void upload_pack_data_clear(struct upload_pack_data
*data
)
163 string_list_clear(&data
->symref
, 1);
164 string_list_clear(&data
->wanted_refs
, 1);
165 string_list_clear(&data
->hidden_refs
, 0);
166 object_array_clear(&data
->want_obj
);
167 object_array_clear(&data
->have_obj
);
168 oid_array_clear(&data
->haves
);
169 object_array_clear(&data
->shallows
);
170 string_list_clear(&data
->deepen_not
, 0);
171 object_array_clear(&data
->extra_edge_obj
);
172 list_objects_filter_release(&data
->filter_options
);
173 string_list_clear(&data
->allowed_filters
, 0);
175 free((char *)data
->pack_objects_hook
);
178 static void reset_timeout(unsigned int timeout
)
183 static void send_client_data(int fd
, const char *data
, ssize_t sz
,
187 send_sideband(1, fd
, data
, sz
, use_sideband
);
194 /* XXX: are we happy to lose stuff here? */
195 xwrite(fd
, data
, sz
);
198 write_or_die(fd
, data
, sz
);
201 static int write_one_shallow(const struct commit_graft
*graft
, void *cb_data
)
204 if (graft
->nr_parent
== -1)
205 fprintf(fp
, "--shallow %s\n", oid_to_hex(&graft
->oid
));
209 struct output_state
{
211 * We do writes no bigger than LARGE_PACKET_DATA_MAX - 1, because with
212 * sideband-64k the band designator takes up 1 byte of space. Because
213 * relay_pack_data keeps the last byte to itself, we make the buffer 1
214 * byte bigger than the intended maximum write size.
216 char buffer
[(LARGE_PACKET_DATA_MAX
- 1) + 1];
218 unsigned packfile_uris_started
: 1;
219 unsigned packfile_started
: 1;
222 static int relay_pack_data(int pack_objects_out
, struct output_state
*os
,
223 int use_sideband
, int write_packfile_line
)
226 * We keep the last byte to ourselves
227 * in case we detect broken rev-list, so that we
228 * can leave the stream corrupted. This is
229 * unfortunate -- unpack-objects would happily
230 * accept a valid packdata with trailing garbage,
231 * so appending garbage after we pass all the
232 * pack data is not good enough to signal
233 * breakage to downstream.
237 readsz
= xread(pack_objects_out
, os
->buffer
+ os
->used
,
238 sizeof(os
->buffer
) - os
->used
);
244 while (!os
->packfile_started
) {
246 if (os
->used
>= 4 && !memcmp(os
->buffer
, "PACK", 4)) {
247 os
->packfile_started
= 1;
248 if (write_packfile_line
) {
249 if (os
->packfile_uris_started
)
251 packet_write_fmt(1, "\1packfile\n");
255 if ((p
= memchr(os
->buffer
, '\n', os
->used
))) {
256 if (!os
->packfile_uris_started
) {
257 os
->packfile_uris_started
= 1;
258 if (!write_packfile_line
)
259 BUG("packfile_uris requires sideband-all");
260 packet_write_fmt(1, "\1packfile-uris\n");
263 packet_write_fmt(1, "\1%s\n", os
->buffer
);
265 os
->used
-= p
- os
->buffer
+ 1;
266 memmove(os
->buffer
, p
+ 1, os
->used
);
276 send_client_data(1, os
->buffer
, os
->used
- 1, use_sideband
);
277 os
->buffer
[0] = os
->buffer
[os
->used
- 1];
280 send_client_data(1, os
->buffer
, os
->used
, use_sideband
);
287 static void create_pack_file(struct upload_pack_data
*pack_data
,
288 const struct string_list
*uri_protocols
)
290 struct child_process pack_objects
= CHILD_PROCESS_INIT
;
291 struct output_state
*output_state
= xcalloc(1, sizeof(struct output_state
));
293 char abort_msg
[] = "aborting due to possible repository "
294 "corruption on the remote side.";
299 if (!pack_data
->pack_objects_hook
)
300 pack_objects
.git_cmd
= 1;
302 strvec_push(&pack_objects
.args
, pack_data
->pack_objects_hook
);
303 strvec_push(&pack_objects
.args
, "git");
304 pack_objects
.use_shell
= 1;
307 if (pack_data
->shallow_nr
) {
308 strvec_push(&pack_objects
.args
, "--shallow-file");
309 strvec_push(&pack_objects
.args
, "");
311 strvec_push(&pack_objects
.args
, "pack-objects");
312 strvec_push(&pack_objects
.args
, "--revs");
313 if (pack_data
->use_thin_pack
)
314 strvec_push(&pack_objects
.args
, "--thin");
316 strvec_push(&pack_objects
.args
, "--stdout");
317 if (pack_data
->shallow_nr
)
318 strvec_push(&pack_objects
.args
, "--shallow");
319 if (!pack_data
->no_progress
)
320 strvec_push(&pack_objects
.args
, "--progress");
321 if (pack_data
->use_ofs_delta
)
322 strvec_push(&pack_objects
.args
, "--delta-base-offset");
323 if (pack_data
->use_include_tag
)
324 strvec_push(&pack_objects
.args
, "--include-tag");
325 if (pack_data
->filter_options
.choice
) {
327 expand_list_objects_filter_spec(&pack_data
->filter_options
);
328 strvec_pushf(&pack_objects
.args
, "--filter=%s", spec
);
331 for (i
= 0; i
< uri_protocols
->nr
; i
++)
332 strvec_pushf(&pack_objects
.args
, "--uri-protocol=%s",
333 uri_protocols
->items
[i
].string
);
336 pack_objects
.in
= -1;
337 pack_objects
.out
= -1;
338 pack_objects
.err
= -1;
339 pack_objects
.clean_on_exit
= 1;
341 if (start_command(&pack_objects
))
342 die("git upload-pack: unable to fork git-pack-objects");
344 pipe_fd
= xfdopen(pack_objects
.in
, "w");
346 if (pack_data
->shallow_nr
)
347 for_each_commit_graft(write_one_shallow
, pipe_fd
);
349 for (i
= 0; i
< pack_data
->want_obj
.nr
; i
++)
350 fprintf(pipe_fd
, "%s\n",
351 oid_to_hex(&pack_data
->want_obj
.objects
[i
].item
->oid
));
352 fprintf(pipe_fd
, "--not\n");
353 for (i
= 0; i
< pack_data
->have_obj
.nr
; i
++)
354 fprintf(pipe_fd
, "%s\n",
355 oid_to_hex(&pack_data
->have_obj
.objects
[i
].item
->oid
));
356 for (i
= 0; i
< pack_data
->extra_edge_obj
.nr
; i
++)
357 fprintf(pipe_fd
, "%s\n",
358 oid_to_hex(&pack_data
->extra_edge_obj
.objects
[i
].item
->oid
));
359 fprintf(pipe_fd
, "\n");
363 /* We read from pack_objects.err to capture stderr output for
364 * progress bar, and pack_objects.out to capture the pack data.
368 struct pollfd pfd
[2];
369 int pe
, pu
, pollsize
, polltimeout
;
372 reset_timeout(pack_data
->timeout
);
377 if (0 <= pack_objects
.out
) {
378 pfd
[pollsize
].fd
= pack_objects
.out
;
379 pfd
[pollsize
].events
= POLLIN
;
383 if (0 <= pack_objects
.err
) {
384 pfd
[pollsize
].fd
= pack_objects
.err
;
385 pfd
[pollsize
].events
= POLLIN
;
393 polltimeout
= pack_data
->keepalive
< 0
395 : 1000 * pack_data
->keepalive
;
397 ret
= poll(pfd
, pollsize
, polltimeout
);
400 if (errno
!= EINTR
) {
401 error_errno("poll failed, resuming");
406 if (0 <= pe
&& (pfd
[pe
].revents
& (POLLIN
|POLLHUP
))) {
407 /* Status ready; we ship that in the side-band
408 * or dump to the standard error.
410 sz
= xread(pack_objects
.err
, progress
,
413 send_client_data(2, progress
, sz
,
414 pack_data
->use_sideband
);
416 close(pack_objects
.err
);
417 pack_objects
.err
= -1;
421 /* give priority to status messages */
424 if (0 <= pu
&& (pfd
[pu
].revents
& (POLLIN
|POLLHUP
))) {
425 int result
= relay_pack_data(pack_objects
.out
,
427 pack_data
->use_sideband
,
431 close(pack_objects
.out
);
432 pack_objects
.out
= -1;
433 } else if (result
< 0) {
439 * We hit the keepalive timeout without saying anything; send
440 * an empty message on the data sideband just to let the other
441 * side know we're still working on it, but don't have any data
444 * If we don't have a sideband channel, there's no room in the
445 * protocol to say anything, so those clients are just out of
448 if (!ret
&& pack_data
->use_sideband
) {
449 static const char buf
[] = "0005\1";
450 write_or_die(1, buf
, 5);
454 if (finish_command(&pack_objects
)) {
455 error("git upload-pack: git-pack-objects died with error.");
460 if (output_state
->used
> 0) {
461 send_client_data(1, output_state
->buffer
, output_state
->used
,
462 pack_data
->use_sideband
);
463 fprintf(stderr
, "flushed.\n");
466 if (pack_data
->use_sideband
)
472 send_client_data(3, abort_msg
, sizeof(abort_msg
),
473 pack_data
->use_sideband
);
474 die("git upload-pack: %s", abort_msg
);
477 static int do_got_oid(struct upload_pack_data
*data
, const struct object_id
*oid
)
479 int we_knew_they_have
= 0;
480 struct object
*o
= parse_object(the_repository
, oid
);
483 die("oops (%s)", oid_to_hex(oid
));
484 if (o
->type
== OBJ_COMMIT
) {
485 struct commit_list
*parents
;
486 struct commit
*commit
= (struct commit
*)o
;
487 if (o
->flags
& THEY_HAVE
)
488 we_knew_they_have
= 1;
490 o
->flags
|= THEY_HAVE
;
491 if (!data
->oldest_have
|| (commit
->date
< data
->oldest_have
))
492 data
->oldest_have
= commit
->date
;
493 for (parents
= commit
->parents
;
495 parents
= parents
->next
)
496 parents
->item
->object
.flags
|= THEY_HAVE
;
498 if (!we_knew_they_have
) {
499 add_object_array(o
, NULL
, &data
->have_obj
);
505 static int got_oid(struct upload_pack_data
*data
,
506 const char *hex
, struct object_id
*oid
)
508 if (get_oid_hex(hex
, oid
))
509 die("git upload-pack: expected SHA1 object, got '%s'", hex
);
510 if (!repo_has_object_file_with_flags(the_repository
, oid
,
511 OBJECT_INFO_QUICK
| OBJECT_INFO_SKIP_FETCH_OBJECT
))
513 return do_got_oid(data
, oid
);
516 static int ok_to_give_up(struct upload_pack_data
*data
)
518 timestamp_t min_generation
= GENERATION_NUMBER_ZERO
;
520 if (!data
->have_obj
.nr
)
523 return can_all_from_reach_with_flag(&data
->want_obj
, THEY_HAVE
,
524 COMMON_KNOWN
, data
->oldest_have
,
528 static int get_common_commits(struct upload_pack_data
*data
,
529 struct packet_reader
*reader
)
531 struct object_id oid
;
532 char last_hex
[GIT_MAX_HEXSZ
+ 1];
537 save_commit_buffer
= 0;
542 reset_timeout(data
->timeout
);
544 if (packet_reader_read(reader
) != PACKET_READ_NORMAL
) {
545 if (data
->multi_ack
== MULTI_ACK_DETAILED
548 && ok_to_give_up(data
)) {
550 packet_write_fmt(1, "ACK %s ready\n", last_hex
);
552 if (data
->have_obj
.nr
== 0 || data
->multi_ack
)
553 packet_write_fmt(1, "NAK\n");
555 if (data
->no_done
&& sent_ready
) {
556 packet_write_fmt(1, "ACK %s\n", last_hex
);
559 if (data
->stateless_rpc
)
565 if (skip_prefix(reader
->line
, "have ", &arg
)) {
566 switch (got_oid(data
, arg
, &oid
)) {
567 case -1: /* they have what we do not */
570 && ok_to_give_up(data
)) {
571 const char *hex
= oid_to_hex(&oid
);
572 if (data
->multi_ack
== MULTI_ACK_DETAILED
) {
574 packet_write_fmt(1, "ACK %s ready\n", hex
);
576 packet_write_fmt(1, "ACK %s continue\n", hex
);
581 oid_to_hex_r(last_hex
, &oid
);
582 if (data
->multi_ack
== MULTI_ACK_DETAILED
)
583 packet_write_fmt(1, "ACK %s common\n", last_hex
);
584 else if (data
->multi_ack
)
585 packet_write_fmt(1, "ACK %s continue\n", last_hex
);
586 else if (data
->have_obj
.nr
== 1)
587 packet_write_fmt(1, "ACK %s\n", last_hex
);
592 if (!strcmp(reader
->line
, "done")) {
593 if (data
->have_obj
.nr
> 0) {
595 packet_write_fmt(1, "ACK %s\n", last_hex
);
598 packet_write_fmt(1, "NAK\n");
601 die("git upload-pack: expected SHA1 list, got '%s'", reader
->line
);
605 static int is_our_ref(struct object
*o
, enum allow_uor allow_uor
)
607 int allow_hidden_ref
= (allow_uor
&
608 (ALLOW_TIP_SHA1
| ALLOW_REACHABLE_SHA1
));
609 return o
->flags
& ((allow_hidden_ref
? HIDDEN_REF
: 0) | OUR_REF
);
613 * on successful case, it's up to the caller to close cmd->out
615 static int do_reachable_revlist(struct child_process
*cmd
,
616 struct object_array
*src
,
617 struct object_array
*reachable
,
618 enum allow_uor allow_uor
)
624 strvec_pushl(&cmd
->args
, "rev-list", "--stdin", NULL
);
631 * If the next rev-list --stdin encounters an unknown commit,
632 * it terminates, which will cause SIGPIPE in the write loop
635 sigchain_push(SIGPIPE
, SIG_IGN
);
637 if (start_command(cmd
))
640 cmd_in
= xfdopen(cmd
->in
, "w");
642 for (i
= get_max_object_index(); 0 < i
; ) {
643 o
= get_indexed_object(--i
);
646 if (reachable
&& o
->type
== OBJ_COMMIT
)
647 o
->flags
&= ~TMP_MARK
;
648 if (!is_our_ref(o
, allow_uor
))
650 if (fprintf(cmd_in
, "^%s\n", oid_to_hex(&o
->oid
)) < 0)
653 for (i
= 0; i
< src
->nr
; i
++) {
654 o
= src
->objects
[i
].item
;
655 if (is_our_ref(o
, allow_uor
)) {
657 add_object_array(o
, NULL
, reachable
);
660 if (reachable
&& o
->type
== OBJ_COMMIT
)
661 o
->flags
|= TMP_MARK
;
662 if (fprintf(cmd_in
, "%s\n", oid_to_hex(&o
->oid
)) < 0)
665 if (ferror(cmd_in
) || fflush(cmd_in
))
669 sigchain_pop(SIGPIPE
);
674 sigchain_pop(SIGPIPE
);
683 static int get_reachable_list(struct upload_pack_data
*data
,
684 struct object_array
*reachable
)
686 struct child_process cmd
= CHILD_PROCESS_INIT
;
689 char namebuf
[GIT_MAX_HEXSZ
+ 2]; /* ^ + hash + LF */
690 const unsigned hexsz
= the_hash_algo
->hexsz
;
692 if (do_reachable_revlist(&cmd
, &data
->shallows
, reachable
,
693 data
->allow_uor
) < 0)
696 while ((i
= read_in_full(cmd
.out
, namebuf
, hexsz
+ 1)) == hexsz
+ 1) {
697 struct object_id oid
;
700 if (parse_oid_hex(namebuf
, &oid
, &p
) || *p
!= '\n')
703 o
= lookup_object(the_repository
, &oid
);
704 if (o
&& o
->type
== OBJ_COMMIT
) {
705 o
->flags
&= ~TMP_MARK
;
708 for (i
= get_max_object_index(); 0 < i
; i
--) {
709 o
= get_indexed_object(i
- 1);
710 if (o
&& o
->type
== OBJ_COMMIT
&&
711 (o
->flags
& TMP_MARK
)) {
712 add_object_array(o
, NULL
, reachable
);
713 o
->flags
&= ~TMP_MARK
;
718 if (finish_command(&cmd
))
724 static int has_unreachable(struct object_array
*src
, enum allow_uor allow_uor
)
726 struct child_process cmd
= CHILD_PROCESS_INIT
;
730 if (do_reachable_revlist(&cmd
, src
, NULL
, allow_uor
) < 0)
734 * The commits out of the rev-list are not ancestors of
737 i
= read_in_full(cmd
.out
, buf
, 1);
744 * rev-list may have died by encountering a bad commit
745 * in the history, in which case we do want to bail out
746 * even when it showed no commit.
748 if (finish_command(&cmd
))
751 /* All the non-tip ones are ancestors of what we advertised */
760 static void check_non_tip(struct upload_pack_data
*data
)
765 * In the normal in-process case without
766 * uploadpack.allowReachableSHA1InWant,
767 * non-tip requests can never happen.
769 if (!data
->stateless_rpc
&& !(data
->allow_uor
& ALLOW_REACHABLE_SHA1
))
771 if (!has_unreachable(&data
->want_obj
, data
->allow_uor
))
772 /* All the non-tip ones are ancestors of what we advertised */
776 /* Pick one of them (we know there at least is one) */
777 for (i
= 0; i
< data
->want_obj
.nr
; i
++) {
778 struct object
*o
= data
->want_obj
.objects
[i
].item
;
779 if (!is_our_ref(o
, data
->allow_uor
)) {
780 packet_writer_error(&data
->writer
,
781 "upload-pack: not our ref %s",
782 oid_to_hex(&o
->oid
));
783 die("git upload-pack: not our ref %s",
784 oid_to_hex(&o
->oid
));
789 static void send_shallow(struct upload_pack_data
*data
,
790 struct commit_list
*result
)
793 struct object
*object
= &result
->item
->object
;
794 if (!(object
->flags
& (CLIENT_SHALLOW
|NOT_SHALLOW
))) {
795 packet_writer_write(&data
->writer
, "shallow %s",
796 oid_to_hex(&object
->oid
));
797 register_shallow(the_repository
, &object
->oid
);
800 result
= result
->next
;
804 static void send_unshallow(struct upload_pack_data
*data
)
808 for (i
= 0; i
< data
->shallows
.nr
; i
++) {
809 struct object
*object
= data
->shallows
.objects
[i
].item
;
810 if (object
->flags
& NOT_SHALLOW
) {
811 struct commit_list
*parents
;
812 packet_writer_write(&data
->writer
, "unshallow %s",
813 oid_to_hex(&object
->oid
));
814 object
->flags
&= ~CLIENT_SHALLOW
;
816 * We want to _register_ "object" as shallow, but we
817 * also need to traverse object's parents to deepen a
818 * shallow clone. Unregister it for now so we can
819 * parse and add the parents to the want list, then
822 unregister_shallow(&object
->oid
);
824 parse_commit_or_die((struct commit
*)object
);
825 parents
= ((struct commit
*)object
)->parents
;
827 add_object_array(&parents
->item
->object
,
828 NULL
, &data
->want_obj
);
829 parents
= parents
->next
;
831 add_object_array(object
, NULL
, &data
->extra_edge_obj
);
833 /* make sure commit traversal conforms to client */
834 register_shallow(the_repository
, &object
->oid
);
838 static int check_ref(const char *refname_full
, const struct object_id
*oid
,
839 int flag
, void *cb_data
);
840 static void deepen(struct upload_pack_data
*data
, int depth
)
842 if (depth
== INFINITE_DEPTH
&& !is_repository_shallow(the_repository
)) {
845 for (i
= 0; i
< data
->shallows
.nr
; i
++) {
846 struct object
*object
= data
->shallows
.objects
[i
].item
;
847 object
->flags
|= NOT_SHALLOW
;
849 } else if (data
->deepen_relative
) {
850 struct object_array reachable_shallows
= OBJECT_ARRAY_INIT
;
851 struct commit_list
*result
;
854 * Checking for reachable shallows requires that our refs be
855 * marked with OUR_REF.
857 head_ref_namespaced(check_ref
, data
);
858 for_each_namespaced_ref(check_ref
, data
);
860 get_reachable_list(data
, &reachable_shallows
);
861 result
= get_shallow_commits(&reachable_shallows
,
863 SHALLOW
, NOT_SHALLOW
);
864 send_shallow(data
, result
);
865 free_commit_list(result
);
866 object_array_clear(&reachable_shallows
);
868 struct commit_list
*result
;
870 result
= get_shallow_commits(&data
->want_obj
, depth
,
871 SHALLOW
, NOT_SHALLOW
);
872 send_shallow(data
, result
);
873 free_commit_list(result
);
876 send_unshallow(data
);
879 static void deepen_by_rev_list(struct upload_pack_data
*data
,
883 struct commit_list
*result
;
885 disable_commit_graph(the_repository
);
886 result
= get_shallow_commits_by_rev_list(ac
, av
, SHALLOW
, NOT_SHALLOW
);
887 send_shallow(data
, result
);
888 free_commit_list(result
);
889 send_unshallow(data
);
892 /* Returns 1 if a shallow list is sent or 0 otherwise */
893 static int send_shallow_list(struct upload_pack_data
*data
)
897 if (data
->depth
> 0 && data
->deepen_rev_list
)
898 die("git upload-pack: deepen and deepen-since (or deepen-not) cannot be used together");
899 if (data
->depth
> 0) {
900 deepen(data
, data
->depth
);
902 } else if (data
->deepen_rev_list
) {
903 struct strvec av
= STRVEC_INIT
;
906 strvec_push(&av
, "rev-list");
907 if (data
->deepen_since
)
908 strvec_pushf(&av
, "--max-age=%"PRItime
, data
->deepen_since
);
909 if (data
->deepen_not
.nr
) {
910 strvec_push(&av
, "--not");
911 for (i
= 0; i
< data
->deepen_not
.nr
; i
++) {
912 struct string_list_item
*s
= data
->deepen_not
.items
+ i
;
913 strvec_push(&av
, s
->string
);
915 strvec_push(&av
, "--not");
917 for (i
= 0; i
< data
->want_obj
.nr
; i
++) {
918 struct object
*o
= data
->want_obj
.objects
[i
].item
;
919 strvec_push(&av
, oid_to_hex(&o
->oid
));
921 deepen_by_rev_list(data
, av
.nr
, av
.v
);
925 if (data
->shallows
.nr
> 0) {
927 for (i
= 0; i
< data
->shallows
.nr
; i
++)
928 register_shallow(the_repository
,
929 &data
->shallows
.objects
[i
].item
->oid
);
933 data
->shallow_nr
+= data
->shallows
.nr
;
937 static int process_shallow(const char *line
, struct object_array
*shallows
)
940 if (skip_prefix(line
, "shallow ", &arg
)) {
941 struct object_id oid
;
942 struct object
*object
;
943 if (get_oid_hex(arg
, &oid
))
944 die("invalid shallow line: %s", line
);
945 object
= parse_object(the_repository
, &oid
);
948 if (object
->type
!= OBJ_COMMIT
)
949 die("invalid shallow object %s", oid_to_hex(&oid
));
950 if (!(object
->flags
& CLIENT_SHALLOW
)) {
951 object
->flags
|= CLIENT_SHALLOW
;
952 add_object_array(object
, NULL
, shallows
);
960 static int process_deepen(const char *line
, int *depth
)
963 if (skip_prefix(line
, "deepen ", &arg
)) {
965 *depth
= (int)strtol(arg
, &end
, 0);
966 if (!end
|| *end
|| *depth
<= 0)
967 die("Invalid deepen: %s", line
);
974 static int process_deepen_since(const char *line
, timestamp_t
*deepen_since
, int *deepen_rev_list
)
977 if (skip_prefix(line
, "deepen-since ", &arg
)) {
979 *deepen_since
= parse_timestamp(arg
, &end
, 0);
980 if (!end
|| *end
|| !deepen_since
||
981 /* revisions.c's max_age -1 is special */
983 die("Invalid deepen-since: %s", line
);
984 *deepen_rev_list
= 1;
990 static int process_deepen_not(const char *line
, struct string_list
*deepen_not
, int *deepen_rev_list
)
993 if (skip_prefix(line
, "deepen-not ", &arg
)) {
995 struct object_id oid
;
996 if (expand_ref(the_repository
, arg
, strlen(arg
), &oid
, &ref
) != 1)
997 die("git upload-pack: ambiguous deepen-not: %s", line
);
998 string_list_append(deepen_not
, ref
);
1000 *deepen_rev_list
= 1;
1006 NORETURN
__attribute__((format(printf
,2,3)))
1007 static void send_err_and_die(struct upload_pack_data
*data
,
1008 const char *fmt
, ...)
1010 struct strbuf buf
= STRBUF_INIT
;
1014 strbuf_vaddf(&buf
, fmt
, ap
);
1017 packet_writer_error(&data
->writer
, "%s", buf
.buf
);
1021 static void check_one_filter(struct upload_pack_data
*data
,
1022 struct list_objects_filter_options
*opts
)
1024 const char *key
= list_object_filter_config_name(opts
->choice
);
1025 struct string_list_item
*item
= string_list_lookup(&data
->allowed_filters
,
1030 allowed
= (intptr_t)item
->util
;
1032 allowed
= data
->allow_filter_fallback
;
1035 send_err_and_die(data
, "filter '%s' not supported", key
);
1037 if (opts
->choice
== LOFC_TREE_DEPTH
&&
1038 opts
->tree_exclude_depth
> data
->tree_filter_max_depth
)
1039 send_err_and_die(data
,
1040 "tree filter allows max depth %lu, but got %lu",
1041 data
->tree_filter_max_depth
,
1042 opts
->tree_exclude_depth
);
1045 static void check_filter_recurse(struct upload_pack_data
*data
,
1046 struct list_objects_filter_options
*opts
)
1050 check_one_filter(data
, opts
);
1051 if (opts
->choice
!= LOFC_COMBINE
)
1054 for (i
= 0; i
< opts
->sub_nr
; i
++)
1055 check_filter_recurse(data
, &opts
->sub
[i
]);
1058 static void die_if_using_banned_filter(struct upload_pack_data
*data
)
1060 check_filter_recurse(data
, &data
->filter_options
);
1063 static void receive_needs(struct upload_pack_data
*data
,
1064 struct packet_reader
*reader
)
1066 int has_non_tip
= 0;
1068 data
->shallow_nr
= 0;
1071 const char *features
;
1072 struct object_id oid_buf
;
1076 reset_timeout(data
->timeout
);
1077 if (packet_reader_read(reader
) != PACKET_READ_NORMAL
)
1080 if (process_shallow(reader
->line
, &data
->shallows
))
1082 if (process_deepen(reader
->line
, &data
->depth
))
1084 if (process_deepen_since(reader
->line
, &data
->deepen_since
, &data
->deepen_rev_list
))
1086 if (process_deepen_not(reader
->line
, &data
->deepen_not
, &data
->deepen_rev_list
))
1089 if (skip_prefix(reader
->line
, "filter ", &arg
)) {
1090 if (!data
->filter_capability_requested
)
1091 die("git upload-pack: filtering capability not negotiated");
1092 list_objects_filter_die_if_populated(&data
->filter_options
);
1093 parse_list_objects_filter(&data
->filter_options
, arg
);
1094 die_if_using_banned_filter(data
);
1098 if (!skip_prefix(reader
->line
, "want ", &arg
) ||
1099 parse_oid_hex(arg
, &oid_buf
, &features
))
1100 die("git upload-pack: protocol error, "
1101 "expected to get object ID, not '%s'", reader
->line
);
1103 if (parse_feature_request(features
, "deepen-relative"))
1104 data
->deepen_relative
= 1;
1105 if (parse_feature_request(features
, "multi_ack_detailed"))
1106 data
->multi_ack
= MULTI_ACK_DETAILED
;
1107 else if (parse_feature_request(features
, "multi_ack"))
1108 data
->multi_ack
= MULTI_ACK
;
1109 if (parse_feature_request(features
, "no-done"))
1111 if (parse_feature_request(features
, "thin-pack"))
1112 data
->use_thin_pack
= 1;
1113 if (parse_feature_request(features
, "ofs-delta"))
1114 data
->use_ofs_delta
= 1;
1115 if (parse_feature_request(features
, "side-band-64k"))
1116 data
->use_sideband
= LARGE_PACKET_MAX
;
1117 else if (parse_feature_request(features
, "side-band"))
1118 data
->use_sideband
= DEFAULT_PACKET_MAX
;
1119 if (parse_feature_request(features
, "no-progress"))
1120 data
->no_progress
= 1;
1121 if (parse_feature_request(features
, "include-tag"))
1122 data
->use_include_tag
= 1;
1123 if (data
->allow_filter
&&
1124 parse_feature_request(features
, "filter"))
1125 data
->filter_capability_requested
= 1;
1127 arg
= parse_feature_value(features
, "session-id", &feature_len
, NULL
);
1129 char *client_sid
= xstrndup(arg
, feature_len
);
1130 trace2_data_string("transfer", NULL
, "client-sid", client_sid
);
1134 o
= parse_object(the_repository
, &oid_buf
);
1136 packet_writer_error(&data
->writer
,
1137 "upload-pack: not our ref %s",
1138 oid_to_hex(&oid_buf
));
1139 die("git upload-pack: not our ref %s",
1140 oid_to_hex(&oid_buf
));
1142 if (!(o
->flags
& WANTED
)) {
1144 if (!((data
->allow_uor
& ALLOW_ANY_SHA1
) == ALLOW_ANY_SHA1
1145 || is_our_ref(o
, data
->allow_uor
)))
1147 add_object_array(o
, NULL
, &data
->want_obj
);
1152 * We have sent all our refs already, and the other end
1153 * should have chosen out of them. When we are operating
1154 * in the stateless RPC mode, however, their choice may
1155 * have been based on the set of older refs advertised
1156 * by another process that handled the initial request.
1159 check_non_tip(data
);
1161 if (!data
->use_sideband
&& data
->daemon_mode
)
1162 data
->no_progress
= 1;
1164 if (data
->depth
== 0 && !data
->deepen_rev_list
&& data
->shallows
.nr
== 0)
1167 if (send_shallow_list(data
))
1171 /* return non-zero if the ref is hidden, otherwise 0 */
1172 static int mark_our_ref(const char *refname
, const char *refname_full
,
1173 const struct object_id
*oid
, const struct string_list
*hidden_refs
)
1175 struct object
*o
= lookup_unknown_object(the_repository
, oid
);
1177 if (ref_is_hidden(refname
, refname_full
, hidden_refs
)) {
1178 o
->flags
|= HIDDEN_REF
;
1181 o
->flags
|= OUR_REF
;
1185 static int check_ref(const char *refname_full
, const struct object_id
*oid
,
1186 int flag UNUSED
, void *cb_data
)
1188 const char *refname
= strip_namespace(refname_full
);
1189 struct upload_pack_data
*data
= cb_data
;
1191 mark_our_ref(refname
, refname_full
, oid
, &data
->hidden_refs
);
1195 static void format_symref_info(struct strbuf
*buf
, struct string_list
*symref
)
1197 struct string_list_item
*item
;
1201 for_each_string_list_item(item
, symref
)
1202 strbuf_addf(buf
, " symref=%s:%s", item
->string
, (char *)item
->util
);
1205 static void format_session_id(struct strbuf
*buf
, struct upload_pack_data
*d
) {
1206 if (d
->advertise_sid
)
1207 strbuf_addf(buf
, " session-id=%s", trace2_session_id());
1210 static void write_v0_ref(struct upload_pack_data
*data
,
1211 const char *refname
, const char *refname_nons
,
1212 const struct object_id
*oid
)
1214 static const char *capabilities
= "multi_ack thin-pack side-band"
1215 " side-band-64k ofs-delta shallow deepen-since deepen-not"
1216 " deepen-relative no-progress include-tag multi_ack_detailed";
1217 struct object_id peeled
;
1219 if (mark_our_ref(refname_nons
, refname
, oid
, &data
->hidden_refs
))
1223 struct strbuf symref_info
= STRBUF_INIT
;
1224 struct strbuf session_id
= STRBUF_INIT
;
1226 format_symref_info(&symref_info
, &data
->symref
);
1227 format_session_id(&session_id
, data
);
1228 packet_fwrite_fmt(stdout
, "%s %s%c%s%s%s%s%s%s%s object-format=%s agent=%s\n",
1229 oid_to_hex(oid
), refname_nons
,
1231 (data
->allow_uor
& ALLOW_TIP_SHA1
) ?
1232 " allow-tip-sha1-in-want" : "",
1233 (data
->allow_uor
& ALLOW_REACHABLE_SHA1
) ?
1234 " allow-reachable-sha1-in-want" : "",
1235 data
->no_done
? " no-done" : "",
1237 data
->allow_filter
? " filter" : "",
1239 the_hash_algo
->name
,
1240 git_user_agent_sanitized());
1241 strbuf_release(&symref_info
);
1242 strbuf_release(&session_id
);
1243 data
->sent_capabilities
= 1;
1245 packet_fwrite_fmt(stdout
, "%s %s\n", oid_to_hex(oid
), refname_nons
);
1247 capabilities
= NULL
;
1248 if (!peel_iterated_oid(oid
, &peeled
))
1249 packet_fwrite_fmt(stdout
, "%s %s^{}\n", oid_to_hex(&peeled
), refname_nons
);
1253 static int send_ref(const char *refname
, const struct object_id
*oid
,
1254 int flag UNUSED
, void *cb_data
)
1256 write_v0_ref(cb_data
, refname
, strip_namespace(refname
), oid
);
1260 static int find_symref(const char *refname
,
1261 const struct object_id
*oid UNUSED
,
1262 int flag
, void *cb_data
)
1264 const char *symref_target
;
1265 struct string_list_item
*item
;
1267 if ((flag
& REF_ISSYMREF
) == 0)
1269 symref_target
= resolve_ref_unsafe(refname
, 0, NULL
, &flag
);
1270 if (!symref_target
|| (flag
& REF_ISSYMREF
) == 0)
1271 die("'%s' is a symref but it is not?", refname
);
1272 item
= string_list_append(cb_data
, strip_namespace(refname
));
1273 item
->util
= xstrdup(strip_namespace(symref_target
));
1277 static int parse_object_filter_config(const char *var
, const char *value
,
1278 struct upload_pack_data
*data
)
1280 struct strbuf buf
= STRBUF_INIT
;
1281 const char *sub
, *key
;
1284 if (parse_config_key(var
, "uploadpackfilter", &sub
, &sub_len
, &key
))
1288 if (!strcmp(key
, "allow"))
1289 data
->allow_filter_fallback
= git_config_bool(var
, value
);
1293 strbuf_add(&buf
, sub
, sub_len
);
1295 if (!strcmp(key
, "allow"))
1296 string_list_insert(&data
->allowed_filters
, buf
.buf
)->util
=
1297 (void *)(intptr_t)git_config_bool(var
, value
);
1298 else if (!strcmp(buf
.buf
, "tree") && !strcmp(key
, "maxdepth")) {
1300 strbuf_release(&buf
);
1301 return config_error_nonbool(var
);
1303 string_list_insert(&data
->allowed_filters
, buf
.buf
)->util
=
1304 (void *)(intptr_t)1;
1305 data
->tree_filter_max_depth
= git_config_ulong(var
, value
);
1308 strbuf_release(&buf
);
1312 static int upload_pack_config(const char *var
, const char *value
,
1313 const struct config_context
*ctx UNUSED
,
1316 struct upload_pack_data
*data
= cb_data
;
1318 if (!strcmp("uploadpack.allowtipsha1inwant", var
)) {
1319 if (git_config_bool(var
, value
))
1320 data
->allow_uor
|= ALLOW_TIP_SHA1
;
1322 data
->allow_uor
&= ~ALLOW_TIP_SHA1
;
1323 } else if (!strcmp("uploadpack.allowreachablesha1inwant", var
)) {
1324 if (git_config_bool(var
, value
))
1325 data
->allow_uor
|= ALLOW_REACHABLE_SHA1
;
1327 data
->allow_uor
&= ~ALLOW_REACHABLE_SHA1
;
1328 } else if (!strcmp("uploadpack.allowanysha1inwant", var
)) {
1329 if (git_config_bool(var
, value
))
1330 data
->allow_uor
|= ALLOW_ANY_SHA1
;
1332 data
->allow_uor
&= ~ALLOW_ANY_SHA1
;
1333 } else if (!strcmp("uploadpack.keepalive", var
)) {
1334 data
->keepalive
= git_config_int(var
, value
);
1335 if (!data
->keepalive
)
1336 data
->keepalive
= -1;
1337 } else if (!strcmp("uploadpack.allowfilter", var
)) {
1338 data
->allow_filter
= git_config_bool(var
, value
);
1339 } else if (!strcmp("uploadpack.allowrefinwant", var
)) {
1340 data
->allow_ref_in_want
= git_config_bool(var
, value
);
1341 } else if (!strcmp("uploadpack.allowsidebandall", var
)) {
1342 data
->allow_sideband_all
= git_config_bool(var
, value
);
1343 } else if (!strcmp("core.precomposeunicode", var
)) {
1344 precomposed_unicode
= git_config_bool(var
, value
);
1345 } else if (!strcmp("transfer.advertisesid", var
)) {
1346 data
->advertise_sid
= git_config_bool(var
, value
);
1349 if (parse_object_filter_config(var
, value
, data
) < 0)
1352 return parse_hide_refs_config(var
, value
, "uploadpack", &data
->hidden_refs
);
1355 static int upload_pack_protected_config(const char *var
, const char *value
,
1356 const struct config_context
*ctx UNUSED
,
1359 struct upload_pack_data
*data
= cb_data
;
1361 if (!strcmp("uploadpack.packobjectshook", var
))
1362 return git_config_string(&data
->pack_objects_hook
, var
, value
);
1366 static void get_upload_pack_config(struct upload_pack_data
*data
)
1368 git_config(upload_pack_config
, data
);
1369 git_protected_config(upload_pack_protected_config
, data
);
1372 void upload_pack(const int advertise_refs
, const int stateless_rpc
,
1375 struct packet_reader reader
;
1376 struct upload_pack_data data
;
1378 upload_pack_data_init(&data
);
1379 get_upload_pack_config(&data
);
1381 data
.stateless_rpc
= stateless_rpc
;
1382 data
.timeout
= timeout
;
1384 data
.daemon_mode
= 1;
1386 head_ref_namespaced(find_symref
, &data
.symref
);
1388 if (advertise_refs
|| !data
.stateless_rpc
) {
1389 reset_timeout(data
.timeout
);
1392 head_ref_namespaced(send_ref
, &data
);
1393 for_each_namespaced_ref(send_ref
, &data
);
1394 if (!data
.sent_capabilities
) {
1395 const char *refname
= "capabilities^{}";
1396 write_v0_ref(&data
, refname
, refname
, null_oid());
1399 * fflush stdout before calling advertise_shallow_grafts because send_ref
1402 fflush_or_die(stdout
);
1403 advertise_shallow_grafts(1);
1406 head_ref_namespaced(check_ref
, &data
);
1407 for_each_namespaced_ref(check_ref
, &data
);
1410 if (!advertise_refs
) {
1411 packet_reader_init(&reader
, 0, NULL
, 0,
1412 PACKET_READ_CHOMP_NEWLINE
|
1413 PACKET_READ_DIE_ON_ERR_PACKET
);
1415 receive_needs(&data
, &reader
);
1418 * An EOF at this exact point in negotiation should be
1419 * acceptable from stateless clients as they will consume the
1420 * shallow list before doing subsequent rpc with haves/etc.
1422 if (data
.stateless_rpc
)
1423 reader
.options
|= PACKET_READ_GENTLE_ON_EOF
;
1425 if (data
.want_obj
.nr
&&
1426 packet_reader_peek(&reader
) != PACKET_READ_EOF
) {
1427 reader
.options
&= ~PACKET_READ_GENTLE_ON_EOF
;
1428 get_common_commits(&data
, &reader
);
1429 create_pack_file(&data
, NULL
);
1433 upload_pack_data_clear(&data
);
1436 static int parse_want(struct packet_writer
*writer
, const char *line
,
1437 struct object_array
*want_obj
)
1440 if (skip_prefix(line
, "want ", &arg
)) {
1441 struct object_id oid
;
1444 if (get_oid_hex(arg
, &oid
))
1445 die("git upload-pack: protocol error, "
1446 "expected to get oid, not '%s'", line
);
1448 o
= parse_object_with_flags(the_repository
, &oid
,
1449 PARSE_OBJECT_SKIP_HASH_CHECK
);
1452 packet_writer_error(writer
,
1453 "upload-pack: not our ref %s",
1455 die("git upload-pack: not our ref %s",
1459 if (!(o
->flags
& WANTED
)) {
1461 add_object_array(o
, NULL
, want_obj
);
1470 static int parse_want_ref(struct packet_writer
*writer
, const char *line
,
1471 struct string_list
*wanted_refs
,
1472 struct string_list
*hidden_refs
,
1473 struct object_array
*want_obj
)
1475 const char *refname_nons
;
1476 if (skip_prefix(line
, "want-ref ", &refname_nons
)) {
1477 struct object_id oid
;
1478 struct string_list_item
*item
;
1479 struct object
*o
= NULL
;
1480 struct strbuf refname
= STRBUF_INIT
;
1482 strbuf_addf(&refname
, "%s%s", get_git_namespace(), refname_nons
);
1483 if (ref_is_hidden(refname_nons
, refname
.buf
, hidden_refs
) ||
1484 read_ref(refname
.buf
, &oid
)) {
1485 packet_writer_error(writer
, "unknown ref %s", refname_nons
);
1486 die("unknown ref %s", refname_nons
);
1488 strbuf_release(&refname
);
1490 item
= string_list_append(wanted_refs
, refname_nons
);
1491 item
->util
= oiddup(&oid
);
1493 if (!starts_with(refname_nons
, "refs/tags/")) {
1494 struct commit
*commit
= lookup_commit_in_graph(the_repository
, &oid
);
1496 o
= &commit
->object
;
1500 o
= parse_object_or_die(&oid
, refname_nons
);
1502 if (!(o
->flags
& WANTED
)) {
1504 add_object_array(o
, NULL
, want_obj
);
1513 static int parse_have(const char *line
, struct oid_array
*haves
)
1516 if (skip_prefix(line
, "have ", &arg
)) {
1517 struct object_id oid
;
1519 if (get_oid_hex(arg
, &oid
))
1520 die("git upload-pack: expected SHA1 object, got '%s'", arg
);
1521 oid_array_append(haves
, &oid
);
1528 static void process_args(struct packet_reader
*request
,
1529 struct upload_pack_data
*data
)
1531 while (packet_reader_read(request
) == PACKET_READ_NORMAL
) {
1532 const char *arg
= request
->line
;
1536 if (parse_want(&data
->writer
, arg
, &data
->want_obj
))
1538 if (data
->allow_ref_in_want
&&
1539 parse_want_ref(&data
->writer
, arg
, &data
->wanted_refs
,
1540 &data
->hidden_refs
, &data
->want_obj
))
1542 /* process have line */
1543 if (parse_have(arg
, &data
->haves
))
1546 /* process args like thin-pack */
1547 if (!strcmp(arg
, "thin-pack")) {
1548 data
->use_thin_pack
= 1;
1551 if (!strcmp(arg
, "ofs-delta")) {
1552 data
->use_ofs_delta
= 1;
1555 if (!strcmp(arg
, "no-progress")) {
1556 data
->no_progress
= 1;
1559 if (!strcmp(arg
, "include-tag")) {
1560 data
->use_include_tag
= 1;
1563 if (!strcmp(arg
, "done")) {
1567 if (!strcmp(arg
, "wait-for-done")) {
1568 data
->wait_for_done
= 1;
1572 /* Shallow related arguments */
1573 if (process_shallow(arg
, &data
->shallows
))
1575 if (process_deepen(arg
, &data
->depth
))
1577 if (process_deepen_since(arg
, &data
->deepen_since
,
1578 &data
->deepen_rev_list
))
1580 if (process_deepen_not(arg
, &data
->deepen_not
,
1581 &data
->deepen_rev_list
))
1583 if (!strcmp(arg
, "deepen-relative")) {
1584 data
->deepen_relative
= 1;
1588 if (data
->allow_filter
&& skip_prefix(arg
, "filter ", &p
)) {
1589 list_objects_filter_die_if_populated(&data
->filter_options
);
1590 parse_list_objects_filter(&data
->filter_options
, p
);
1591 die_if_using_banned_filter(data
);
1595 if ((git_env_bool("GIT_TEST_SIDEBAND_ALL", 0) ||
1596 data
->allow_sideband_all
) &&
1597 !strcmp(arg
, "sideband-all")) {
1598 data
->writer
.use_sideband
= 1;
1602 if (skip_prefix(arg
, "packfile-uris ", &p
)) {
1603 string_list_split(&data
->uri_protocols
, p
, ',', -1);
1607 /* ignore unknown lines maybe? */
1608 die("unexpected line: '%s'", arg
);
1611 if (data
->uri_protocols
.nr
&& !data
->writer
.use_sideband
)
1612 string_list_clear(&data
->uri_protocols
, 0);
1614 if (request
->status
!= PACKET_READ_FLUSH
)
1615 die(_("expected flush after fetch arguments"));
1618 static int process_haves(struct upload_pack_data
*data
, struct oid_array
*common
)
1623 for (i
= 0; i
< data
->haves
.nr
; i
++) {
1624 const struct object_id
*oid
= &data
->haves
.oid
[i
];
1626 if (!repo_has_object_file_with_flags(the_repository
, oid
,
1627 OBJECT_INFO_QUICK
| OBJECT_INFO_SKIP_FETCH_OBJECT
))
1630 oid_array_append(common
, oid
);
1632 do_got_oid(data
, oid
);
1638 static int send_acks(struct upload_pack_data
*data
, struct oid_array
*acks
)
1642 packet_writer_write(&data
->writer
, "acknowledgments\n");
1646 packet_writer_write(&data
->writer
, "NAK\n");
1648 for (i
= 0; i
< acks
->nr
; i
++) {
1649 packet_writer_write(&data
->writer
, "ACK %s\n",
1650 oid_to_hex(&acks
->oid
[i
]));
1653 if (!data
->wait_for_done
&& ok_to_give_up(data
)) {
1655 packet_writer_write(&data
->writer
, "ready\n");
1662 static int process_haves_and_send_acks(struct upload_pack_data
*data
)
1664 struct oid_array common
= OID_ARRAY_INIT
;
1667 process_haves(data
, &common
);
1670 } else if (send_acks(data
, &common
)) {
1671 packet_writer_delim(&data
->writer
);
1675 packet_writer_flush(&data
->writer
);
1679 oid_array_clear(&data
->haves
);
1680 oid_array_clear(&common
);
1684 static void send_wanted_ref_info(struct upload_pack_data
*data
)
1686 const struct string_list_item
*item
;
1688 if (!data
->wanted_refs
.nr
)
1691 packet_writer_write(&data
->writer
, "wanted-refs\n");
1693 for_each_string_list_item(item
, &data
->wanted_refs
) {
1694 packet_writer_write(&data
->writer
, "%s %s\n",
1695 oid_to_hex(item
->util
),
1699 packet_writer_delim(&data
->writer
);
1702 static void send_shallow_info(struct upload_pack_data
*data
)
1704 /* No shallow info needs to be sent */
1705 if (!data
->depth
&& !data
->deepen_rev_list
&& !data
->shallows
.nr
&&
1706 !is_repository_shallow(the_repository
))
1709 packet_writer_write(&data
->writer
, "shallow-info\n");
1711 if (!send_shallow_list(data
) &&
1712 is_repository_shallow(the_repository
))
1713 deepen(data
, INFINITE_DEPTH
);
1719 FETCH_PROCESS_ARGS
= 0,
1725 int upload_pack_v2(struct repository
*r UNUSED
, struct packet_reader
*request
)
1727 enum fetch_state state
= FETCH_PROCESS_ARGS
;
1728 struct upload_pack_data data
;
1730 clear_object_flags(ALL_FLAGS
);
1732 upload_pack_data_init(&data
);
1733 data
.use_sideband
= LARGE_PACKET_MAX
;
1734 get_upload_pack_config(&data
);
1736 while (state
!= FETCH_DONE
) {
1738 case FETCH_PROCESS_ARGS
:
1739 process_args(request
, &data
);
1741 if (!data
.want_obj
.nr
&& !data
.wait_for_done
) {
1743 * Request didn't contain any 'want' lines (and
1744 * the request does not contain
1745 * "wait-for-done", in which it is reasonable
1746 * to just send 'have's without 'want's); guess
1747 * they didn't want anything.
1750 } else if (data
.haves
.nr
) {
1752 * Request had 'have' lines, so lets ACK them.
1754 state
= FETCH_SEND_ACKS
;
1757 * Request had 'want's but no 'have's so we can
1758 * immedietly go to construct and send a pack.
1760 state
= FETCH_SEND_PACK
;
1763 case FETCH_SEND_ACKS
:
1764 if (process_haves_and_send_acks(&data
))
1765 state
= FETCH_SEND_PACK
;
1769 case FETCH_SEND_PACK
:
1770 send_wanted_ref_info(&data
);
1771 send_shallow_info(&data
);
1773 if (data
.uri_protocols
.nr
) {
1774 create_pack_file(&data
, &data
.uri_protocols
);
1776 packet_writer_write(&data
.writer
, "packfile\n");
1777 create_pack_file(&data
, NULL
);
1786 upload_pack_data_clear(&data
);
1790 int upload_pack_advertise(struct repository
*r
,
1791 struct strbuf
*value
)
1794 int allow_filter_value
;
1795 int allow_ref_in_want
;
1796 int allow_sideband_all_value
;
1799 strbuf_addstr(value
, "shallow wait-for-done");
1801 if (!repo_config_get_bool(r
,
1802 "uploadpack.allowfilter",
1803 &allow_filter_value
) &&
1805 strbuf_addstr(value
, " filter");
1807 if (!repo_config_get_bool(r
,
1808 "uploadpack.allowrefinwant",
1809 &allow_ref_in_want
) &&
1811 strbuf_addstr(value
, " ref-in-want");
1813 if (git_env_bool("GIT_TEST_SIDEBAND_ALL", 0) ||
1814 (!repo_config_get_bool(r
,
1815 "uploadpack.allowsidebandall",
1816 &allow_sideband_all_value
) &&
1817 allow_sideband_all_value
))
1818 strbuf_addstr(value
, " sideband-all");
1820 if (!repo_config_get_string(r
,
1821 "uploadpack.blobpackfileuri",
1824 strbuf_addstr(value
, " packfile-uris");