1 #include "git-compat-util.h"
3 #include "environment.h"
9 #include "repository.h"
10 #include "object-store-ll.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"
35 #include "write-or-die.h"
37 /* Remember to update object flag allocation in object.h */
38 #define THEY_HAVE (1u << 11)
39 #define OUR_REF (1u << 12)
40 #define WANTED (1u << 13)
41 #define COMMON_KNOWN (1u << 14)
43 #define SHALLOW (1u << 16)
44 #define NOT_SHALLOW (1u << 17)
45 #define CLIENT_SHALLOW (1u << 18)
46 #define HIDDEN_REF (1u << 19)
48 #define ALL_FLAGS (THEY_HAVE | OUR_REF | WANTED | COMMON_KNOWN | SHALLOW | \
49 NOT_SHALLOW | CLIENT_SHALLOW | HIDDEN_REF)
51 /* Enum for allowed unadvertised object request (UOR) */
53 /* Allow specifying sha1 if it is a ref tip. */
54 ALLOW_TIP_SHA1
= 0x01,
55 /* Allow request of a sha1 if it is reachable from a ref (possibly hidden ref). */
56 ALLOW_REACHABLE_SHA1
= 0x02,
57 /* Allow request of any sha1. Implies ALLOW_TIP_SHA1 and ALLOW_REACHABLE_SHA1. */
62 * Please annotate, and if possible group together, fields used only
63 * for protocol v0 or only for protocol v2.
65 struct upload_pack_data
{
66 struct string_list symref
; /* v0 only */
67 struct object_array want_obj
;
68 struct object_array have_obj
;
69 struct oid_array haves
; /* v2 only */
70 struct string_list wanted_refs
; /* v2 only */
71 struct strvec hidden_refs
;
73 struct object_array shallows
;
74 struct string_list deepen_not
;
75 struct object_array extra_edge_obj
;
77 timestamp_t deepen_since
;
82 timestamp_t oldest_have
;
84 unsigned int timeout
; /* v0 only */
88 MULTI_ACK_DETAILED
= 2
89 } multi_ack
; /* v0 only */
91 /* 0 for no sideband, otherwise DEFAULT_PACKET_MAX or LARGE_PACKET_MAX */
94 struct string_list uri_protocols
;
95 enum allow_uor allow_uor
;
97 struct list_objects_filter_options filter_options
;
98 struct string_list allowed_filters
;
100 struct packet_writer writer
;
102 const char *pack_objects_hook
;
104 unsigned stateless_rpc
: 1; /* v0 only */
105 unsigned no_done
: 1; /* v0 only */
106 unsigned daemon_mode
: 1; /* v0 only */
107 unsigned filter_capability_requested
: 1; /* v0 only */
109 unsigned use_thin_pack
: 1;
110 unsigned use_ofs_delta
: 1;
111 unsigned no_progress
: 1;
112 unsigned use_include_tag
: 1;
113 unsigned wait_for_done
: 1;
114 unsigned allow_filter
: 1;
115 unsigned allow_filter_fallback
: 1;
116 unsigned long tree_filter_max_depth
;
118 unsigned done
: 1; /* v2 only */
119 unsigned allow_ref_in_want
: 1; /* v2 only */
120 unsigned allow_sideband_all
: 1; /* v2 only */
121 unsigned advertise_sid
: 1;
122 unsigned sent_capabilities
: 1;
125 static void upload_pack_data_init(struct upload_pack_data
*data
)
127 struct string_list symref
= STRING_LIST_INIT_DUP
;
128 struct string_list wanted_refs
= STRING_LIST_INIT_DUP
;
129 struct strvec hidden_refs
= STRVEC_INIT
;
130 struct object_array want_obj
= OBJECT_ARRAY_INIT
;
131 struct object_array have_obj
= OBJECT_ARRAY_INIT
;
132 struct oid_array haves
= OID_ARRAY_INIT
;
133 struct object_array shallows
= OBJECT_ARRAY_INIT
;
134 struct string_list deepen_not
= STRING_LIST_INIT_DUP
;
135 struct string_list uri_protocols
= STRING_LIST_INIT_DUP
;
136 struct object_array extra_edge_obj
= OBJECT_ARRAY_INIT
;
137 struct string_list allowed_filters
= STRING_LIST_INIT_DUP
;
139 memset(data
, 0, sizeof(*data
));
140 data
->symref
= symref
;
141 data
->wanted_refs
= wanted_refs
;
142 data
->hidden_refs
= hidden_refs
;
143 data
->want_obj
= want_obj
;
144 data
->have_obj
= have_obj
;
146 data
->shallows
= shallows
;
147 data
->deepen_not
= deepen_not
;
148 data
->uri_protocols
= uri_protocols
;
149 data
->extra_edge_obj
= extra_edge_obj
;
150 data
->allowed_filters
= allowed_filters
;
151 data
->allow_filter_fallback
= 1;
152 data
->tree_filter_max_depth
= ULONG_MAX
;
153 packet_writer_init(&data
->writer
, 1);
154 list_objects_filter_init(&data
->filter_options
);
157 data
->advertise_sid
= 0;
160 static void upload_pack_data_clear(struct upload_pack_data
*data
)
162 string_list_clear(&data
->symref
, 1);
163 string_list_clear(&data
->wanted_refs
, 1);
164 strvec_clear(&data
->hidden_refs
);
165 object_array_clear(&data
->want_obj
);
166 object_array_clear(&data
->have_obj
);
167 oid_array_clear(&data
->haves
);
168 object_array_clear(&data
->shallows
);
169 string_list_clear(&data
->deepen_not
, 0);
170 object_array_clear(&data
->extra_edge_obj
);
171 list_objects_filter_release(&data
->filter_options
);
172 string_list_clear(&data
->allowed_filters
, 0);
174 free((char *)data
->pack_objects_hook
);
177 static void reset_timeout(unsigned int timeout
)
182 static void send_client_data(int fd
, const char *data
, ssize_t sz
,
186 send_sideband(1, fd
, data
, sz
, use_sideband
);
193 /* XXX: are we happy to lose stuff here? */
194 xwrite(fd
, data
, sz
);
197 write_or_die(fd
, data
, sz
);
200 static int write_one_shallow(const struct commit_graft
*graft
, void *cb_data
)
203 if (graft
->nr_parent
== -1)
204 fprintf(fp
, "--shallow %s\n", oid_to_hex(&graft
->oid
));
208 struct output_state
{
210 * We do writes no bigger than LARGE_PACKET_DATA_MAX - 1, because with
211 * sideband-64k the band designator takes up 1 byte of space. Because
212 * relay_pack_data keeps the last byte to itself, we make the buffer 1
213 * byte bigger than the intended maximum write size.
215 char buffer
[(LARGE_PACKET_DATA_MAX
- 1) + 1];
217 unsigned packfile_uris_started
: 1;
218 unsigned packfile_started
: 1;
221 static int relay_pack_data(int pack_objects_out
, struct output_state
*os
,
222 int use_sideband
, int write_packfile_line
)
225 * We keep the last byte to ourselves
226 * in case we detect broken rev-list, so that we
227 * can leave the stream corrupted. This is
228 * unfortunate -- unpack-objects would happily
229 * accept a valid packdata with trailing garbage,
230 * so appending garbage after we pass all the
231 * pack data is not good enough to signal
232 * breakage to downstream.
236 readsz
= xread(pack_objects_out
, os
->buffer
+ os
->used
,
237 sizeof(os
->buffer
) - os
->used
);
243 while (!os
->packfile_started
) {
245 if (os
->used
>= 4 && !memcmp(os
->buffer
, "PACK", 4)) {
246 os
->packfile_started
= 1;
247 if (write_packfile_line
) {
248 if (os
->packfile_uris_started
)
250 packet_write_fmt(1, "\1packfile\n");
254 if ((p
= memchr(os
->buffer
, '\n', os
->used
))) {
255 if (!os
->packfile_uris_started
) {
256 os
->packfile_uris_started
= 1;
257 if (!write_packfile_line
)
258 BUG("packfile_uris requires sideband-all");
259 packet_write_fmt(1, "\1packfile-uris\n");
262 packet_write_fmt(1, "\1%s\n", os
->buffer
);
264 os
->used
-= p
- os
->buffer
+ 1;
265 memmove(os
->buffer
, p
+ 1, os
->used
);
275 send_client_data(1, os
->buffer
, os
->used
- 1, use_sideband
);
276 os
->buffer
[0] = os
->buffer
[os
->used
- 1];
279 send_client_data(1, os
->buffer
, os
->used
, use_sideband
);
286 static void create_pack_file(struct upload_pack_data
*pack_data
,
287 const struct string_list
*uri_protocols
)
289 struct child_process pack_objects
= CHILD_PROCESS_INIT
;
290 struct output_state
*output_state
= xcalloc(1, sizeof(struct output_state
));
292 char abort_msg
[] = "aborting due to possible repository "
293 "corruption on the remote side.";
298 if (!pack_data
->pack_objects_hook
)
299 pack_objects
.git_cmd
= 1;
301 strvec_push(&pack_objects
.args
, pack_data
->pack_objects_hook
);
302 strvec_push(&pack_objects
.args
, "git");
303 pack_objects
.use_shell
= 1;
306 if (pack_data
->shallow_nr
) {
307 strvec_push(&pack_objects
.args
, "--shallow-file");
308 strvec_push(&pack_objects
.args
, "");
310 strvec_push(&pack_objects
.args
, "pack-objects");
311 strvec_push(&pack_objects
.args
, "--revs");
312 if (pack_data
->use_thin_pack
)
313 strvec_push(&pack_objects
.args
, "--thin");
315 strvec_push(&pack_objects
.args
, "--stdout");
316 if (pack_data
->shallow_nr
)
317 strvec_push(&pack_objects
.args
, "--shallow");
318 if (!pack_data
->no_progress
)
319 strvec_push(&pack_objects
.args
, "--progress");
320 if (pack_data
->use_ofs_delta
)
321 strvec_push(&pack_objects
.args
, "--delta-base-offset");
322 if (pack_data
->use_include_tag
)
323 strvec_push(&pack_objects
.args
, "--include-tag");
324 if (pack_data
->filter_options
.choice
) {
326 expand_list_objects_filter_spec(&pack_data
->filter_options
);
327 strvec_pushf(&pack_objects
.args
, "--filter=%s", spec
);
330 for (i
= 0; i
< uri_protocols
->nr
; i
++)
331 strvec_pushf(&pack_objects
.args
, "--uri-protocol=%s",
332 uri_protocols
->items
[i
].string
);
335 pack_objects
.in
= -1;
336 pack_objects
.out
= -1;
337 pack_objects
.err
= -1;
338 pack_objects
.clean_on_exit
= 1;
340 if (start_command(&pack_objects
))
341 die("git upload-pack: unable to fork git-pack-objects");
343 pipe_fd
= xfdopen(pack_objects
.in
, "w");
345 if (pack_data
->shallow_nr
)
346 for_each_commit_graft(write_one_shallow
, pipe_fd
);
348 for (i
= 0; i
< pack_data
->want_obj
.nr
; i
++)
349 fprintf(pipe_fd
, "%s\n",
350 oid_to_hex(&pack_data
->want_obj
.objects
[i
].item
->oid
));
351 fprintf(pipe_fd
, "--not\n");
352 for (i
= 0; i
< pack_data
->have_obj
.nr
; i
++)
353 fprintf(pipe_fd
, "%s\n",
354 oid_to_hex(&pack_data
->have_obj
.objects
[i
].item
->oid
));
355 for (i
= 0; i
< pack_data
->extra_edge_obj
.nr
; i
++)
356 fprintf(pipe_fd
, "%s\n",
357 oid_to_hex(&pack_data
->extra_edge_obj
.objects
[i
].item
->oid
));
358 fprintf(pipe_fd
, "\n");
362 /* We read from pack_objects.err to capture stderr output for
363 * progress bar, and pack_objects.out to capture the pack data.
367 struct pollfd pfd
[2];
368 int pe
, pu
, pollsize
, polltimeout
;
371 reset_timeout(pack_data
->timeout
);
376 if (0 <= pack_objects
.out
) {
377 pfd
[pollsize
].fd
= pack_objects
.out
;
378 pfd
[pollsize
].events
= POLLIN
;
382 if (0 <= pack_objects
.err
) {
383 pfd
[pollsize
].fd
= pack_objects
.err
;
384 pfd
[pollsize
].events
= POLLIN
;
392 polltimeout
= pack_data
->keepalive
< 0
394 : 1000 * pack_data
->keepalive
;
396 ret
= poll(pfd
, pollsize
, polltimeout
);
399 if (errno
!= EINTR
) {
400 error_errno("poll failed, resuming");
405 if (0 <= pe
&& (pfd
[pe
].revents
& (POLLIN
|POLLHUP
))) {
406 /* Status ready; we ship that in the side-band
407 * or dump to the standard error.
409 sz
= xread(pack_objects
.err
, progress
,
412 send_client_data(2, progress
, sz
,
413 pack_data
->use_sideband
);
415 close(pack_objects
.err
);
416 pack_objects
.err
= -1;
420 /* give priority to status messages */
423 if (0 <= pu
&& (pfd
[pu
].revents
& (POLLIN
|POLLHUP
))) {
424 int result
= relay_pack_data(pack_objects
.out
,
426 pack_data
->use_sideband
,
430 close(pack_objects
.out
);
431 pack_objects
.out
= -1;
432 } else if (result
< 0) {
438 * We hit the keepalive timeout without saying anything; send
439 * an empty message on the data sideband just to let the other
440 * side know we're still working on it, but don't have any data
443 * If we don't have a sideband channel, there's no room in the
444 * protocol to say anything, so those clients are just out of
447 if (!ret
&& pack_data
->use_sideband
) {
448 static const char buf
[] = "0005\1";
449 write_or_die(1, buf
, 5);
453 if (finish_command(&pack_objects
)) {
454 error("git upload-pack: git-pack-objects died with error.");
459 if (output_state
->used
> 0) {
460 send_client_data(1, output_state
->buffer
, output_state
->used
,
461 pack_data
->use_sideband
);
462 fprintf(stderr
, "flushed.\n");
465 if (pack_data
->use_sideband
)
471 send_client_data(3, abort_msg
, sizeof(abort_msg
),
472 pack_data
->use_sideband
);
473 die("git upload-pack: %s", abort_msg
);
476 static int do_got_oid(struct upload_pack_data
*data
, const struct object_id
*oid
)
478 int we_knew_they_have
= 0;
479 struct object
*o
= parse_object(the_repository
, oid
);
482 die("oops (%s)", oid_to_hex(oid
));
483 if (o
->type
== OBJ_COMMIT
) {
484 struct commit_list
*parents
;
485 struct commit
*commit
= (struct commit
*)o
;
486 if (o
->flags
& THEY_HAVE
)
487 we_knew_they_have
= 1;
489 o
->flags
|= THEY_HAVE
;
490 if (!data
->oldest_have
|| (commit
->date
< data
->oldest_have
))
491 data
->oldest_have
= commit
->date
;
492 for (parents
= commit
->parents
;
494 parents
= parents
->next
)
495 parents
->item
->object
.flags
|= THEY_HAVE
;
497 if (!we_knew_they_have
) {
498 add_object_array(o
, NULL
, &data
->have_obj
);
504 static int got_oid(struct upload_pack_data
*data
,
505 const char *hex
, struct object_id
*oid
)
507 if (get_oid_hex(hex
, oid
))
508 die("git upload-pack: expected SHA1 object, got '%s'", hex
);
509 if (!repo_has_object_file_with_flags(the_repository
, oid
,
510 OBJECT_INFO_QUICK
| OBJECT_INFO_SKIP_FETCH_OBJECT
))
512 return do_got_oid(data
, oid
);
515 static int ok_to_give_up(struct upload_pack_data
*data
)
517 timestamp_t min_generation
= GENERATION_NUMBER_ZERO
;
519 if (!data
->have_obj
.nr
)
522 return can_all_from_reach_with_flag(&data
->want_obj
, THEY_HAVE
,
523 COMMON_KNOWN
, data
->oldest_have
,
527 static int get_common_commits(struct upload_pack_data
*data
,
528 struct packet_reader
*reader
)
530 struct object_id oid
;
531 char last_hex
[GIT_MAX_HEXSZ
+ 1];
536 save_commit_buffer
= 0;
541 reset_timeout(data
->timeout
);
543 if (packet_reader_read(reader
) != PACKET_READ_NORMAL
) {
544 if (data
->multi_ack
== MULTI_ACK_DETAILED
547 && ok_to_give_up(data
)) {
549 packet_write_fmt(1, "ACK %s ready\n", last_hex
);
551 if (data
->have_obj
.nr
== 0 || data
->multi_ack
)
552 packet_write_fmt(1, "NAK\n");
554 if (data
->no_done
&& sent_ready
) {
555 packet_write_fmt(1, "ACK %s\n", last_hex
);
558 if (data
->stateless_rpc
)
564 if (skip_prefix(reader
->line
, "have ", &arg
)) {
565 switch (got_oid(data
, arg
, &oid
)) {
566 case -1: /* they have what we do not */
569 && ok_to_give_up(data
)) {
570 const char *hex
= oid_to_hex(&oid
);
571 if (data
->multi_ack
== MULTI_ACK_DETAILED
) {
573 packet_write_fmt(1, "ACK %s ready\n", hex
);
575 packet_write_fmt(1, "ACK %s continue\n", hex
);
580 oid_to_hex_r(last_hex
, &oid
);
581 if (data
->multi_ack
== MULTI_ACK_DETAILED
)
582 packet_write_fmt(1, "ACK %s common\n", last_hex
);
583 else if (data
->multi_ack
)
584 packet_write_fmt(1, "ACK %s continue\n", last_hex
);
585 else if (data
->have_obj
.nr
== 1)
586 packet_write_fmt(1, "ACK %s\n", last_hex
);
591 if (!strcmp(reader
->line
, "done")) {
592 if (data
->have_obj
.nr
> 0) {
594 packet_write_fmt(1, "ACK %s\n", last_hex
);
597 packet_write_fmt(1, "NAK\n");
600 die("git upload-pack: expected SHA1 list, got '%s'", reader
->line
);
604 static int allow_hidden_refs(enum allow_uor allow_uor
)
606 if ((allow_uor
& ALLOW_ANY_SHA1
) == ALLOW_ANY_SHA1
)
608 return !(allow_uor
& (ALLOW_TIP_SHA1
| ALLOW_REACHABLE_SHA1
));
611 static void for_each_namespaced_ref_1(each_ref_fn fn
,
612 struct upload_pack_data
*data
)
614 const char **excludes
= NULL
;
616 * If `data->allow_uor` allows fetching hidden refs, we need to
617 * mark all references (including hidden ones), to check in
618 * `is_our_ref()` below.
620 * Otherwise, we only care about whether each reference's object
621 * has the OUR_REF bit set or not, so do not need to visit
624 if (allow_hidden_refs(data
->allow_uor
))
625 excludes
= hidden_refs_to_excludes(&data
->hidden_refs
);
627 for_each_namespaced_ref(excludes
, fn
, data
);
631 static int is_our_ref(struct object
*o
, enum allow_uor allow_uor
)
633 return o
->flags
& ((allow_hidden_refs(allow_uor
) ? 0 : HIDDEN_REF
) | OUR_REF
);
637 * on successful case, it's up to the caller to close cmd->out
639 static int do_reachable_revlist(struct child_process
*cmd
,
640 struct object_array
*src
,
641 struct object_array
*reachable
,
642 enum allow_uor allow_uor
)
648 strvec_pushl(&cmd
->args
, "rev-list", "--stdin", NULL
);
655 * If the next rev-list --stdin encounters an unknown commit,
656 * it terminates, which will cause SIGPIPE in the write loop
659 sigchain_push(SIGPIPE
, SIG_IGN
);
661 if (start_command(cmd
))
664 cmd_in
= xfdopen(cmd
->in
, "w");
666 for (i
= get_max_object_index(); 0 < i
; ) {
667 o
= get_indexed_object(--i
);
670 if (reachable
&& o
->type
== OBJ_COMMIT
)
671 o
->flags
&= ~TMP_MARK
;
672 if (!is_our_ref(o
, allow_uor
))
674 if (fprintf(cmd_in
, "^%s\n", oid_to_hex(&o
->oid
)) < 0)
677 for (i
= 0; i
< src
->nr
; i
++) {
678 o
= src
->objects
[i
].item
;
679 if (is_our_ref(o
, allow_uor
)) {
681 add_object_array(o
, NULL
, reachable
);
684 if (reachable
&& o
->type
== OBJ_COMMIT
)
685 o
->flags
|= TMP_MARK
;
686 if (fprintf(cmd_in
, "%s\n", oid_to_hex(&o
->oid
)) < 0)
689 if (ferror(cmd_in
) || fflush(cmd_in
))
693 sigchain_pop(SIGPIPE
);
698 sigchain_pop(SIGPIPE
);
707 static int get_reachable_list(struct upload_pack_data
*data
,
708 struct object_array
*reachable
)
710 struct child_process cmd
= CHILD_PROCESS_INIT
;
713 char namebuf
[GIT_MAX_HEXSZ
+ 2]; /* ^ + hash + LF */
714 const unsigned hexsz
= the_hash_algo
->hexsz
;
716 if (do_reachable_revlist(&cmd
, &data
->shallows
, reachable
,
717 data
->allow_uor
) < 0)
720 while ((i
= read_in_full(cmd
.out
, namebuf
, hexsz
+ 1)) == hexsz
+ 1) {
721 struct object_id oid
;
724 if (parse_oid_hex(namebuf
, &oid
, &p
) || *p
!= '\n')
727 o
= lookup_object(the_repository
, &oid
);
728 if (o
&& o
->type
== OBJ_COMMIT
) {
729 o
->flags
&= ~TMP_MARK
;
732 for (i
= get_max_object_index(); 0 < i
; i
--) {
733 o
= get_indexed_object(i
- 1);
734 if (o
&& o
->type
== OBJ_COMMIT
&&
735 (o
->flags
& TMP_MARK
)) {
736 add_object_array(o
, NULL
, reachable
);
737 o
->flags
&= ~TMP_MARK
;
742 if (finish_command(&cmd
))
748 static int has_unreachable(struct object_array
*src
, enum allow_uor allow_uor
)
750 struct child_process cmd
= CHILD_PROCESS_INIT
;
754 if (do_reachable_revlist(&cmd
, src
, NULL
, allow_uor
) < 0)
758 * The commits out of the rev-list are not ancestors of
761 i
= read_in_full(cmd
.out
, buf
, 1);
768 * rev-list may have died by encountering a bad commit
769 * in the history, in which case we do want to bail out
770 * even when it showed no commit.
772 if (finish_command(&cmd
))
775 /* All the non-tip ones are ancestors of what we advertised */
784 static void check_non_tip(struct upload_pack_data
*data
)
789 * In the normal in-process case without
790 * uploadpack.allowReachableSHA1InWant,
791 * non-tip requests can never happen.
793 if (!data
->stateless_rpc
&& !(data
->allow_uor
& ALLOW_REACHABLE_SHA1
))
795 if (!has_unreachable(&data
->want_obj
, data
->allow_uor
))
796 /* All the non-tip ones are ancestors of what we advertised */
800 /* Pick one of them (we know there at least is one) */
801 for (i
= 0; i
< data
->want_obj
.nr
; i
++) {
802 struct object
*o
= data
->want_obj
.objects
[i
].item
;
803 if (!is_our_ref(o
, data
->allow_uor
)) {
804 error("git upload-pack: not our ref %s",
805 oid_to_hex(&o
->oid
));
806 packet_writer_error(&data
->writer
,
807 "upload-pack: not our ref %s",
808 oid_to_hex(&o
->oid
));
814 static void send_shallow(struct upload_pack_data
*data
,
815 struct commit_list
*result
)
818 struct object
*object
= &result
->item
->object
;
819 if (!(object
->flags
& (CLIENT_SHALLOW
|NOT_SHALLOW
))) {
820 packet_writer_write(&data
->writer
, "shallow %s",
821 oid_to_hex(&object
->oid
));
822 register_shallow(the_repository
, &object
->oid
);
825 result
= result
->next
;
829 static void send_unshallow(struct upload_pack_data
*data
)
833 for (i
= 0; i
< data
->shallows
.nr
; i
++) {
834 struct object
*object
= data
->shallows
.objects
[i
].item
;
835 if (object
->flags
& NOT_SHALLOW
) {
836 struct commit_list
*parents
;
837 packet_writer_write(&data
->writer
, "unshallow %s",
838 oid_to_hex(&object
->oid
));
839 object
->flags
&= ~CLIENT_SHALLOW
;
841 * We want to _register_ "object" as shallow, but we
842 * also need to traverse object's parents to deepen a
843 * shallow clone. Unregister it for now so we can
844 * parse and add the parents to the want list, then
847 unregister_shallow(&object
->oid
);
849 parse_commit_or_die((struct commit
*)object
);
850 parents
= ((struct commit
*)object
)->parents
;
852 add_object_array(&parents
->item
->object
,
853 NULL
, &data
->want_obj
);
854 parents
= parents
->next
;
856 add_object_array(object
, NULL
, &data
->extra_edge_obj
);
858 /* make sure commit traversal conforms to client */
859 register_shallow(the_repository
, &object
->oid
);
863 static int check_ref(const char *refname_full
, const struct object_id
*oid
,
864 int flag
, void *cb_data
);
865 static void deepen(struct upload_pack_data
*data
, int depth
)
867 if (depth
== INFINITE_DEPTH
&& !is_repository_shallow(the_repository
)) {
870 for (i
= 0; i
< data
->shallows
.nr
; i
++) {
871 struct object
*object
= data
->shallows
.objects
[i
].item
;
872 object
->flags
|= NOT_SHALLOW
;
874 } else if (data
->deepen_relative
) {
875 struct object_array reachable_shallows
= OBJECT_ARRAY_INIT
;
876 struct commit_list
*result
;
879 * Checking for reachable shallows requires that our refs be
880 * marked with OUR_REF.
882 head_ref_namespaced(check_ref
, data
);
883 for_each_namespaced_ref_1(check_ref
, data
);
885 get_reachable_list(data
, &reachable_shallows
);
886 result
= get_shallow_commits(&reachable_shallows
,
888 SHALLOW
, NOT_SHALLOW
);
889 send_shallow(data
, result
);
890 free_commit_list(result
);
891 object_array_clear(&reachable_shallows
);
893 struct commit_list
*result
;
895 result
= get_shallow_commits(&data
->want_obj
, depth
,
896 SHALLOW
, NOT_SHALLOW
);
897 send_shallow(data
, result
);
898 free_commit_list(result
);
901 send_unshallow(data
);
904 static void deepen_by_rev_list(struct upload_pack_data
*data
,
908 struct commit_list
*result
;
910 disable_commit_graph(the_repository
);
911 result
= get_shallow_commits_by_rev_list(ac
, av
, SHALLOW
, NOT_SHALLOW
);
912 send_shallow(data
, result
);
913 free_commit_list(result
);
914 send_unshallow(data
);
917 /* Returns 1 if a shallow list is sent or 0 otherwise */
918 static int send_shallow_list(struct upload_pack_data
*data
)
922 if (data
->depth
> 0 && data
->deepen_rev_list
)
923 die("git upload-pack: deepen and deepen-since (or deepen-not) cannot be used together");
924 if (data
->depth
> 0) {
925 deepen(data
, data
->depth
);
927 } else if (data
->deepen_rev_list
) {
928 struct strvec av
= STRVEC_INIT
;
931 strvec_push(&av
, "rev-list");
932 if (data
->deepen_since
)
933 strvec_pushf(&av
, "--max-age=%"PRItime
, data
->deepen_since
);
934 if (data
->deepen_not
.nr
) {
935 strvec_push(&av
, "--not");
936 for (i
= 0; i
< data
->deepen_not
.nr
; i
++) {
937 struct string_list_item
*s
= data
->deepen_not
.items
+ i
;
938 strvec_push(&av
, s
->string
);
940 strvec_push(&av
, "--not");
942 for (i
= 0; i
< data
->want_obj
.nr
; i
++) {
943 struct object
*o
= data
->want_obj
.objects
[i
].item
;
944 strvec_push(&av
, oid_to_hex(&o
->oid
));
946 deepen_by_rev_list(data
, av
.nr
, av
.v
);
950 if (data
->shallows
.nr
> 0) {
952 for (i
= 0; i
< data
->shallows
.nr
; i
++)
953 register_shallow(the_repository
,
954 &data
->shallows
.objects
[i
].item
->oid
);
958 data
->shallow_nr
+= data
->shallows
.nr
;
962 static int process_shallow(const char *line
, struct object_array
*shallows
)
965 if (skip_prefix(line
, "shallow ", &arg
)) {
966 struct object_id oid
;
967 struct object
*object
;
968 if (get_oid_hex(arg
, &oid
))
969 die("invalid shallow line: %s", line
);
970 object
= parse_object(the_repository
, &oid
);
973 if (object
->type
!= OBJ_COMMIT
)
974 die("invalid shallow object %s", oid_to_hex(&oid
));
975 if (!(object
->flags
& CLIENT_SHALLOW
)) {
976 object
->flags
|= CLIENT_SHALLOW
;
977 add_object_array(object
, NULL
, shallows
);
985 static int process_deepen(const char *line
, int *depth
)
988 if (skip_prefix(line
, "deepen ", &arg
)) {
990 *depth
= (int)strtol(arg
, &end
, 0);
991 if (!end
|| *end
|| *depth
<= 0)
992 die("Invalid deepen: %s", line
);
999 static int process_deepen_since(const char *line
, timestamp_t
*deepen_since
, int *deepen_rev_list
)
1002 if (skip_prefix(line
, "deepen-since ", &arg
)) {
1004 *deepen_since
= parse_timestamp(arg
, &end
, 0);
1005 if (!end
|| *end
|| !deepen_since
||
1006 /* revisions.c's max_age -1 is special */
1007 *deepen_since
== -1)
1008 die("Invalid deepen-since: %s", line
);
1009 *deepen_rev_list
= 1;
1015 static int process_deepen_not(const char *line
, struct string_list
*deepen_not
, int *deepen_rev_list
)
1018 if (skip_prefix(line
, "deepen-not ", &arg
)) {
1020 struct object_id oid
;
1021 if (expand_ref(the_repository
, arg
, strlen(arg
), &oid
, &ref
) != 1)
1022 die("git upload-pack: ambiguous deepen-not: %s", line
);
1023 string_list_append(deepen_not
, ref
);
1025 *deepen_rev_list
= 1;
1031 NORETURN
__attribute__((format(printf
,2,3)))
1032 static void send_err_and_die(struct upload_pack_data
*data
,
1033 const char *fmt
, ...)
1035 struct strbuf buf
= STRBUF_INIT
;
1039 strbuf_vaddf(&buf
, fmt
, ap
);
1042 packet_writer_error(&data
->writer
, "%s", buf
.buf
);
1046 static void check_one_filter(struct upload_pack_data
*data
,
1047 struct list_objects_filter_options
*opts
)
1049 const char *key
= list_object_filter_config_name(opts
->choice
);
1050 struct string_list_item
*item
= string_list_lookup(&data
->allowed_filters
,
1055 allowed
= (intptr_t)item
->util
;
1057 allowed
= data
->allow_filter_fallback
;
1060 send_err_and_die(data
, "filter '%s' not supported", key
);
1062 if (opts
->choice
== LOFC_TREE_DEPTH
&&
1063 opts
->tree_exclude_depth
> data
->tree_filter_max_depth
)
1064 send_err_and_die(data
,
1065 "tree filter allows max depth %lu, but got %lu",
1066 data
->tree_filter_max_depth
,
1067 opts
->tree_exclude_depth
);
1070 static void check_filter_recurse(struct upload_pack_data
*data
,
1071 struct list_objects_filter_options
*opts
)
1075 check_one_filter(data
, opts
);
1076 if (opts
->choice
!= LOFC_COMBINE
)
1079 for (i
= 0; i
< opts
->sub_nr
; i
++)
1080 check_filter_recurse(data
, &opts
->sub
[i
]);
1083 static void die_if_using_banned_filter(struct upload_pack_data
*data
)
1085 check_filter_recurse(data
, &data
->filter_options
);
1088 static void receive_needs(struct upload_pack_data
*data
,
1089 struct packet_reader
*reader
)
1091 int has_non_tip
= 0;
1093 data
->shallow_nr
= 0;
1096 const char *features
;
1097 struct object_id oid_buf
;
1101 reset_timeout(data
->timeout
);
1102 if (packet_reader_read(reader
) != PACKET_READ_NORMAL
)
1105 if (process_shallow(reader
->line
, &data
->shallows
))
1107 if (process_deepen(reader
->line
, &data
->depth
))
1109 if (process_deepen_since(reader
->line
, &data
->deepen_since
, &data
->deepen_rev_list
))
1111 if (process_deepen_not(reader
->line
, &data
->deepen_not
, &data
->deepen_rev_list
))
1114 if (skip_prefix(reader
->line
, "filter ", &arg
)) {
1115 if (!data
->filter_capability_requested
)
1116 die("git upload-pack: filtering capability not negotiated");
1117 list_objects_filter_die_if_populated(&data
->filter_options
);
1118 parse_list_objects_filter(&data
->filter_options
, arg
);
1119 die_if_using_banned_filter(data
);
1123 if (!skip_prefix(reader
->line
, "want ", &arg
) ||
1124 parse_oid_hex(arg
, &oid_buf
, &features
))
1125 die("git upload-pack: protocol error, "
1126 "expected to get object ID, not '%s'", reader
->line
);
1128 if (parse_feature_request(features
, "deepen-relative"))
1129 data
->deepen_relative
= 1;
1130 if (parse_feature_request(features
, "multi_ack_detailed"))
1131 data
->multi_ack
= MULTI_ACK_DETAILED
;
1132 else if (parse_feature_request(features
, "multi_ack"))
1133 data
->multi_ack
= MULTI_ACK
;
1134 if (parse_feature_request(features
, "no-done"))
1136 if (parse_feature_request(features
, "thin-pack"))
1137 data
->use_thin_pack
= 1;
1138 if (parse_feature_request(features
, "ofs-delta"))
1139 data
->use_ofs_delta
= 1;
1140 if (parse_feature_request(features
, "side-band-64k"))
1141 data
->use_sideband
= LARGE_PACKET_MAX
;
1142 else if (parse_feature_request(features
, "side-band"))
1143 data
->use_sideband
= DEFAULT_PACKET_MAX
;
1144 if (parse_feature_request(features
, "no-progress"))
1145 data
->no_progress
= 1;
1146 if (parse_feature_request(features
, "include-tag"))
1147 data
->use_include_tag
= 1;
1148 if (data
->allow_filter
&&
1149 parse_feature_request(features
, "filter"))
1150 data
->filter_capability_requested
= 1;
1152 arg
= parse_feature_value(features
, "session-id", &feature_len
, NULL
);
1154 char *client_sid
= xstrndup(arg
, feature_len
);
1155 trace2_data_string("transfer", NULL
, "client-sid", client_sid
);
1159 o
= parse_object(the_repository
, &oid_buf
);
1161 packet_writer_error(&data
->writer
,
1162 "upload-pack: not our ref %s",
1163 oid_to_hex(&oid_buf
));
1164 die("git upload-pack: not our ref %s",
1165 oid_to_hex(&oid_buf
));
1167 if (!(o
->flags
& WANTED
)) {
1169 if (!((data
->allow_uor
& ALLOW_ANY_SHA1
) == ALLOW_ANY_SHA1
1170 || is_our_ref(o
, data
->allow_uor
)))
1172 add_object_array(o
, NULL
, &data
->want_obj
);
1177 * We have sent all our refs already, and the other end
1178 * should have chosen out of them. When we are operating
1179 * in the stateless RPC mode, however, their choice may
1180 * have been based on the set of older refs advertised
1181 * by another process that handled the initial request.
1184 check_non_tip(data
);
1186 if (!data
->use_sideband
&& data
->daemon_mode
)
1187 data
->no_progress
= 1;
1189 if (data
->depth
== 0 && !data
->deepen_rev_list
&& data
->shallows
.nr
== 0)
1192 if (send_shallow_list(data
))
1196 /* return non-zero if the ref is hidden, otherwise 0 */
1197 static int mark_our_ref(const char *refname
, const char *refname_full
,
1198 const struct object_id
*oid
, const struct strvec
*hidden_refs
)
1200 struct object
*o
= lookup_unknown_object(the_repository
, oid
);
1202 if (ref_is_hidden(refname
, refname_full
, hidden_refs
)) {
1203 o
->flags
|= HIDDEN_REF
;
1206 o
->flags
|= OUR_REF
;
1210 static int check_ref(const char *refname_full
, const struct object_id
*oid
,
1211 int flag UNUSED
, void *cb_data
)
1213 const char *refname
= strip_namespace(refname_full
);
1214 struct upload_pack_data
*data
= cb_data
;
1216 mark_our_ref(refname
, refname_full
, oid
, &data
->hidden_refs
);
1220 static void format_symref_info(struct strbuf
*buf
, struct string_list
*symref
)
1222 struct string_list_item
*item
;
1226 for_each_string_list_item(item
, symref
)
1227 strbuf_addf(buf
, " symref=%s:%s", item
->string
, (char *)item
->util
);
1230 static void format_session_id(struct strbuf
*buf
, struct upload_pack_data
*d
) {
1231 if (d
->advertise_sid
)
1232 strbuf_addf(buf
, " session-id=%s", trace2_session_id());
1235 static void write_v0_ref(struct upload_pack_data
*data
,
1236 const char *refname
, const char *refname_nons
,
1237 const struct object_id
*oid
)
1239 static const char *capabilities
= "multi_ack thin-pack side-band"
1240 " side-band-64k ofs-delta shallow deepen-since deepen-not"
1241 " deepen-relative no-progress include-tag multi_ack_detailed";
1242 struct object_id peeled
;
1244 if (mark_our_ref(refname_nons
, refname
, oid
, &data
->hidden_refs
))
1248 struct strbuf symref_info
= STRBUF_INIT
;
1249 struct strbuf session_id
= STRBUF_INIT
;
1251 format_symref_info(&symref_info
, &data
->symref
);
1252 format_session_id(&session_id
, data
);
1253 packet_fwrite_fmt(stdout
, "%s %s%c%s%s%s%s%s%s%s object-format=%s agent=%s\n",
1254 oid_to_hex(oid
), refname_nons
,
1256 (data
->allow_uor
& ALLOW_TIP_SHA1
) ?
1257 " allow-tip-sha1-in-want" : "",
1258 (data
->allow_uor
& ALLOW_REACHABLE_SHA1
) ?
1259 " allow-reachable-sha1-in-want" : "",
1260 data
->no_done
? " no-done" : "",
1262 data
->allow_filter
? " filter" : "",
1264 the_hash_algo
->name
,
1265 git_user_agent_sanitized());
1266 strbuf_release(&symref_info
);
1267 strbuf_release(&session_id
);
1268 data
->sent_capabilities
= 1;
1270 packet_fwrite_fmt(stdout
, "%s %s\n", oid_to_hex(oid
), refname_nons
);
1272 capabilities
= NULL
;
1273 if (!peel_iterated_oid(oid
, &peeled
))
1274 packet_fwrite_fmt(stdout
, "%s %s^{}\n", oid_to_hex(&peeled
), refname_nons
);
1278 static int send_ref(const char *refname
, const struct object_id
*oid
,
1279 int flag UNUSED
, void *cb_data
)
1281 write_v0_ref(cb_data
, refname
, strip_namespace(refname
), oid
);
1285 static int find_symref(const char *refname
,
1286 const struct object_id
*oid UNUSED
,
1287 int flag
, void *cb_data
)
1289 const char *symref_target
;
1290 struct string_list_item
*item
;
1292 if ((flag
& REF_ISSYMREF
) == 0)
1294 symref_target
= resolve_ref_unsafe(refname
, 0, NULL
, &flag
);
1295 if (!symref_target
|| (flag
& REF_ISSYMREF
) == 0)
1296 die("'%s' is a symref but it is not?", refname
);
1297 item
= string_list_append(cb_data
, strip_namespace(refname
));
1298 item
->util
= xstrdup(strip_namespace(symref_target
));
1302 static int parse_object_filter_config(const char *var
, const char *value
,
1303 const struct key_value_info
*kvi
,
1304 struct upload_pack_data
*data
)
1306 struct strbuf buf
= STRBUF_INIT
;
1307 const char *sub
, *key
;
1310 if (parse_config_key(var
, "uploadpackfilter", &sub
, &sub_len
, &key
))
1314 if (!strcmp(key
, "allow"))
1315 data
->allow_filter_fallback
= git_config_bool(var
, value
);
1319 strbuf_add(&buf
, sub
, sub_len
);
1321 if (!strcmp(key
, "allow"))
1322 string_list_insert(&data
->allowed_filters
, buf
.buf
)->util
=
1323 (void *)(intptr_t)git_config_bool(var
, value
);
1324 else if (!strcmp(buf
.buf
, "tree") && !strcmp(key
, "maxdepth")) {
1326 strbuf_release(&buf
);
1327 return config_error_nonbool(var
);
1329 string_list_insert(&data
->allowed_filters
, buf
.buf
)->util
=
1330 (void *)(intptr_t)1;
1331 data
->tree_filter_max_depth
= git_config_ulong(var
, value
,
1335 strbuf_release(&buf
);
1339 static int upload_pack_config(const char *var
, const char *value
,
1340 const struct config_context
*ctx
,
1343 struct upload_pack_data
*data
= cb_data
;
1345 if (!strcmp("uploadpack.allowtipsha1inwant", var
)) {
1346 if (git_config_bool(var
, value
))
1347 data
->allow_uor
|= ALLOW_TIP_SHA1
;
1349 data
->allow_uor
&= ~ALLOW_TIP_SHA1
;
1350 } else if (!strcmp("uploadpack.allowreachablesha1inwant", var
)) {
1351 if (git_config_bool(var
, value
))
1352 data
->allow_uor
|= ALLOW_REACHABLE_SHA1
;
1354 data
->allow_uor
&= ~ALLOW_REACHABLE_SHA1
;
1355 } else if (!strcmp("uploadpack.allowanysha1inwant", var
)) {
1356 if (git_config_bool(var
, value
))
1357 data
->allow_uor
|= ALLOW_ANY_SHA1
;
1359 data
->allow_uor
&= ~ALLOW_ANY_SHA1
;
1360 } else if (!strcmp("uploadpack.keepalive", var
)) {
1361 data
->keepalive
= git_config_int(var
, value
, ctx
->kvi
);
1362 if (!data
->keepalive
)
1363 data
->keepalive
= -1;
1364 } else if (!strcmp("uploadpack.allowfilter", var
)) {
1365 data
->allow_filter
= git_config_bool(var
, value
);
1366 } else if (!strcmp("uploadpack.allowrefinwant", var
)) {
1367 data
->allow_ref_in_want
= git_config_bool(var
, value
);
1368 } else if (!strcmp("uploadpack.allowsidebandall", var
)) {
1369 data
->allow_sideband_all
= git_config_bool(var
, value
);
1370 } else if (!strcmp("core.precomposeunicode", var
)) {
1371 precomposed_unicode
= git_config_bool(var
, value
);
1372 } else if (!strcmp("transfer.advertisesid", var
)) {
1373 data
->advertise_sid
= git_config_bool(var
, value
);
1376 if (parse_object_filter_config(var
, value
, ctx
->kvi
, data
) < 0)
1379 return parse_hide_refs_config(var
, value
, "uploadpack", &data
->hidden_refs
);
1382 static int upload_pack_protected_config(const char *var
, const char *value
,
1383 const struct config_context
*ctx UNUSED
,
1386 struct upload_pack_data
*data
= cb_data
;
1388 if (!strcmp("uploadpack.packobjectshook", var
))
1389 return git_config_string(&data
->pack_objects_hook
, var
, value
);
1393 static void get_upload_pack_config(struct upload_pack_data
*data
)
1395 git_config(upload_pack_config
, data
);
1396 git_protected_config(upload_pack_protected_config
, data
);
1399 void upload_pack(const int advertise_refs
, const int stateless_rpc
,
1402 struct packet_reader reader
;
1403 struct upload_pack_data data
;
1405 upload_pack_data_init(&data
);
1406 get_upload_pack_config(&data
);
1408 data
.stateless_rpc
= stateless_rpc
;
1409 data
.timeout
= timeout
;
1411 data
.daemon_mode
= 1;
1413 head_ref_namespaced(find_symref
, &data
.symref
);
1415 if (advertise_refs
|| !data
.stateless_rpc
) {
1416 reset_timeout(data
.timeout
);
1419 head_ref_namespaced(send_ref
, &data
);
1420 for_each_namespaced_ref_1(send_ref
, &data
);
1421 if (!data
.sent_capabilities
) {
1422 const char *refname
= "capabilities^{}";
1423 write_v0_ref(&data
, refname
, refname
, null_oid());
1426 * fflush stdout before calling advertise_shallow_grafts because send_ref
1429 fflush_or_die(stdout
);
1430 advertise_shallow_grafts(1);
1433 head_ref_namespaced(check_ref
, &data
);
1434 for_each_namespaced_ref_1(check_ref
, &data
);
1437 if (!advertise_refs
) {
1438 packet_reader_init(&reader
, 0, NULL
, 0,
1439 PACKET_READ_CHOMP_NEWLINE
|
1440 PACKET_READ_DIE_ON_ERR_PACKET
);
1442 receive_needs(&data
, &reader
);
1445 * An EOF at this exact point in negotiation should be
1446 * acceptable from stateless clients as they will consume the
1447 * shallow list before doing subsequent rpc with haves/etc.
1449 if (data
.stateless_rpc
)
1450 reader
.options
|= PACKET_READ_GENTLE_ON_EOF
;
1452 if (data
.want_obj
.nr
&&
1453 packet_reader_peek(&reader
) != PACKET_READ_EOF
) {
1454 reader
.options
&= ~PACKET_READ_GENTLE_ON_EOF
;
1455 get_common_commits(&data
, &reader
);
1456 create_pack_file(&data
, NULL
);
1460 upload_pack_data_clear(&data
);
1463 static int parse_want(struct packet_writer
*writer
, const char *line
,
1464 struct object_array
*want_obj
)
1467 if (skip_prefix(line
, "want ", &arg
)) {
1468 struct object_id oid
;
1471 if (get_oid_hex(arg
, &oid
))
1472 die("git upload-pack: protocol error, "
1473 "expected to get oid, not '%s'", line
);
1475 o
= parse_object_with_flags(the_repository
, &oid
,
1476 PARSE_OBJECT_SKIP_HASH_CHECK
);
1479 packet_writer_error(writer
,
1480 "upload-pack: not our ref %s",
1482 die("git upload-pack: not our ref %s",
1486 if (!(o
->flags
& WANTED
)) {
1488 add_object_array(o
, NULL
, want_obj
);
1497 static int parse_want_ref(struct packet_writer
*writer
, const char *line
,
1498 struct string_list
*wanted_refs
,
1499 struct strvec
*hidden_refs
,
1500 struct object_array
*want_obj
)
1502 const char *refname_nons
;
1503 if (skip_prefix(line
, "want-ref ", &refname_nons
)) {
1504 struct object_id oid
;
1505 struct string_list_item
*item
;
1506 struct object
*o
= NULL
;
1507 struct strbuf refname
= STRBUF_INIT
;
1509 strbuf_addf(&refname
, "%s%s", get_git_namespace(), refname_nons
);
1510 if (ref_is_hidden(refname_nons
, refname
.buf
, hidden_refs
) ||
1511 read_ref(refname
.buf
, &oid
)) {
1512 packet_writer_error(writer
, "unknown ref %s", refname_nons
);
1513 die("unknown ref %s", refname_nons
);
1515 strbuf_release(&refname
);
1517 item
= string_list_append(wanted_refs
, refname_nons
);
1518 item
->util
= oiddup(&oid
);
1520 if (!starts_with(refname_nons
, "refs/tags/")) {
1521 struct commit
*commit
= lookup_commit_in_graph(the_repository
, &oid
);
1523 o
= &commit
->object
;
1527 o
= parse_object_or_die(&oid
, refname_nons
);
1529 if (!(o
->flags
& WANTED
)) {
1531 add_object_array(o
, NULL
, want_obj
);
1540 static int parse_have(const char *line
, struct oid_array
*haves
)
1543 if (skip_prefix(line
, "have ", &arg
)) {
1544 struct object_id oid
;
1546 if (get_oid_hex(arg
, &oid
))
1547 die("git upload-pack: expected SHA1 object, got '%s'", arg
);
1548 oid_array_append(haves
, &oid
);
1555 static void process_args(struct packet_reader
*request
,
1556 struct upload_pack_data
*data
)
1558 while (packet_reader_read(request
) == PACKET_READ_NORMAL
) {
1559 const char *arg
= request
->line
;
1563 if (parse_want(&data
->writer
, arg
, &data
->want_obj
))
1565 if (data
->allow_ref_in_want
&&
1566 parse_want_ref(&data
->writer
, arg
, &data
->wanted_refs
,
1567 &data
->hidden_refs
, &data
->want_obj
))
1569 /* process have line */
1570 if (parse_have(arg
, &data
->haves
))
1573 /* process args like thin-pack */
1574 if (!strcmp(arg
, "thin-pack")) {
1575 data
->use_thin_pack
= 1;
1578 if (!strcmp(arg
, "ofs-delta")) {
1579 data
->use_ofs_delta
= 1;
1582 if (!strcmp(arg
, "no-progress")) {
1583 data
->no_progress
= 1;
1586 if (!strcmp(arg
, "include-tag")) {
1587 data
->use_include_tag
= 1;
1590 if (!strcmp(arg
, "done")) {
1594 if (!strcmp(arg
, "wait-for-done")) {
1595 data
->wait_for_done
= 1;
1599 /* Shallow related arguments */
1600 if (process_shallow(arg
, &data
->shallows
))
1602 if (process_deepen(arg
, &data
->depth
))
1604 if (process_deepen_since(arg
, &data
->deepen_since
,
1605 &data
->deepen_rev_list
))
1607 if (process_deepen_not(arg
, &data
->deepen_not
,
1608 &data
->deepen_rev_list
))
1610 if (!strcmp(arg
, "deepen-relative")) {
1611 data
->deepen_relative
= 1;
1615 if (data
->allow_filter
&& skip_prefix(arg
, "filter ", &p
)) {
1616 list_objects_filter_die_if_populated(&data
->filter_options
);
1617 parse_list_objects_filter(&data
->filter_options
, p
);
1618 die_if_using_banned_filter(data
);
1622 if ((git_env_bool("GIT_TEST_SIDEBAND_ALL", 0) ||
1623 data
->allow_sideband_all
) &&
1624 !strcmp(arg
, "sideband-all")) {
1625 data
->writer
.use_sideband
= 1;
1629 if (skip_prefix(arg
, "packfile-uris ", &p
)) {
1630 string_list_split(&data
->uri_protocols
, p
, ',', -1);
1634 /* ignore unknown lines maybe? */
1635 die("unexpected line: '%s'", arg
);
1638 if (data
->uri_protocols
.nr
&& !data
->writer
.use_sideband
)
1639 string_list_clear(&data
->uri_protocols
, 0);
1641 if (request
->status
!= PACKET_READ_FLUSH
)
1642 die(_("expected flush after fetch arguments"));
1645 static int process_haves(struct upload_pack_data
*data
, struct oid_array
*common
)
1650 for (i
= 0; i
< data
->haves
.nr
; i
++) {
1651 const struct object_id
*oid
= &data
->haves
.oid
[i
];
1653 if (!repo_has_object_file_with_flags(the_repository
, oid
,
1654 OBJECT_INFO_QUICK
| OBJECT_INFO_SKIP_FETCH_OBJECT
))
1657 oid_array_append(common
, oid
);
1659 do_got_oid(data
, oid
);
1665 static int send_acks(struct upload_pack_data
*data
, struct oid_array
*acks
)
1669 packet_writer_write(&data
->writer
, "acknowledgments\n");
1673 packet_writer_write(&data
->writer
, "NAK\n");
1675 for (i
= 0; i
< acks
->nr
; i
++) {
1676 packet_writer_write(&data
->writer
, "ACK %s\n",
1677 oid_to_hex(&acks
->oid
[i
]));
1680 if (!data
->wait_for_done
&& ok_to_give_up(data
)) {
1682 packet_writer_write(&data
->writer
, "ready\n");
1689 static int process_haves_and_send_acks(struct upload_pack_data
*data
)
1691 struct oid_array common
= OID_ARRAY_INIT
;
1694 process_haves(data
, &common
);
1697 } else if (send_acks(data
, &common
)) {
1698 packet_writer_delim(&data
->writer
);
1702 packet_writer_flush(&data
->writer
);
1706 oid_array_clear(&data
->haves
);
1707 oid_array_clear(&common
);
1711 static void send_wanted_ref_info(struct upload_pack_data
*data
)
1713 const struct string_list_item
*item
;
1715 if (!data
->wanted_refs
.nr
)
1718 packet_writer_write(&data
->writer
, "wanted-refs\n");
1720 for_each_string_list_item(item
, &data
->wanted_refs
) {
1721 packet_writer_write(&data
->writer
, "%s %s\n",
1722 oid_to_hex(item
->util
),
1726 packet_writer_delim(&data
->writer
);
1729 static void send_shallow_info(struct upload_pack_data
*data
)
1731 /* No shallow info needs to be sent */
1732 if (!data
->depth
&& !data
->deepen_rev_list
&& !data
->shallows
.nr
&&
1733 !is_repository_shallow(the_repository
))
1736 packet_writer_write(&data
->writer
, "shallow-info\n");
1738 if (!send_shallow_list(data
) &&
1739 is_repository_shallow(the_repository
))
1740 deepen(data
, INFINITE_DEPTH
);
1746 FETCH_PROCESS_ARGS
= 0,
1752 int upload_pack_v2(struct repository
*r UNUSED
, struct packet_reader
*request
)
1754 enum fetch_state state
= FETCH_PROCESS_ARGS
;
1755 struct upload_pack_data data
;
1757 clear_object_flags(ALL_FLAGS
);
1759 upload_pack_data_init(&data
);
1760 data
.use_sideband
= LARGE_PACKET_MAX
;
1761 get_upload_pack_config(&data
);
1763 while (state
!= FETCH_DONE
) {
1765 case FETCH_PROCESS_ARGS
:
1766 process_args(request
, &data
);
1768 if (!data
.want_obj
.nr
&& !data
.wait_for_done
) {
1770 * Request didn't contain any 'want' lines (and
1771 * the request does not contain
1772 * "wait-for-done", in which it is reasonable
1773 * to just send 'have's without 'want's); guess
1774 * they didn't want anything.
1777 } else if (data
.haves
.nr
) {
1779 * Request had 'have' lines, so lets ACK them.
1781 state
= FETCH_SEND_ACKS
;
1784 * Request had 'want's but no 'have's so we can
1785 * immedietly go to construct and send a pack.
1787 state
= FETCH_SEND_PACK
;
1790 case FETCH_SEND_ACKS
:
1791 if (process_haves_and_send_acks(&data
))
1792 state
= FETCH_SEND_PACK
;
1796 case FETCH_SEND_PACK
:
1797 send_wanted_ref_info(&data
);
1798 send_shallow_info(&data
);
1800 if (data
.uri_protocols
.nr
) {
1801 create_pack_file(&data
, &data
.uri_protocols
);
1803 packet_writer_write(&data
.writer
, "packfile\n");
1804 create_pack_file(&data
, NULL
);
1813 upload_pack_data_clear(&data
);
1817 int upload_pack_advertise(struct repository
*r
,
1818 struct strbuf
*value
)
1821 int allow_filter_value
;
1822 int allow_ref_in_want
;
1823 int allow_sideband_all_value
;
1826 strbuf_addstr(value
, "shallow wait-for-done");
1828 if (!repo_config_get_bool(r
,
1829 "uploadpack.allowfilter",
1830 &allow_filter_value
) &&
1832 strbuf_addstr(value
, " filter");
1834 if (!repo_config_get_bool(r
,
1835 "uploadpack.allowrefinwant",
1836 &allow_ref_in_want
) &&
1838 strbuf_addstr(value
, " ref-in-want");
1840 if (git_env_bool("GIT_TEST_SIDEBAND_ALL", 0) ||
1841 (!repo_config_get_bool(r
,
1842 "uploadpack.allowsidebandall",
1843 &allow_sideband_all_value
) &&
1844 allow_sideband_all_value
))
1845 strbuf_addstr(value
, " sideband-all");
1847 if (!repo_config_get_string(r
,
1848 "uploadpack.blobpackfileuri",
1851 strbuf_addstr(value
, " packfile-uris");