2 #include "repository.h"
9 #include "run-command.h"
15 #include "transport.h"
16 #include "string-list.h"
17 #include "sha1-array.h"
18 #include "connected.h"
19 #include "argv-array.h"
22 #include "gpg-interface.h"
25 #include "tmp-objdir.h"
28 #include "object-store.h"
30 #include "commit-reach.h"
32 static const char * const receive_pack_usage
[] = {
33 N_("git receive-pack <git-dir>"),
45 static int deny_deletes
;
46 static int deny_non_fast_forwards
;
47 static enum deny_action deny_current_branch
= DENY_UNCONFIGURED
;
48 static enum deny_action deny_delete_current
= DENY_UNCONFIGURED
;
49 static int receive_fsck_objects
= -1;
50 static int transfer_fsck_objects
= -1;
51 static struct strbuf fsck_msg_types
= STRBUF_INIT
;
52 static int receive_unpack_limit
= -1;
53 static int transfer_unpack_limit
= -1;
54 static int advertise_atomic_push
= 1;
55 static int advertise_push_options
;
56 static int unpack_limit
= 100;
57 static off_t max_input_size
;
58 static int report_status
;
59 static int use_sideband
;
60 static int use_atomic
;
61 static int use_push_options
;
63 static int prefer_ofs_delta
= 1;
64 static int auto_update_server_info
;
65 static int auto_gc
= 1;
66 static int reject_thin
;
67 static int stateless_rpc
;
68 static const char *service_dir
;
69 static const char *head_name
;
70 static void *head_name_to_free
;
71 static int sent_capabilities
;
72 static int shallow_update
;
73 static const char *alt_shallow_file
;
74 static struct strbuf push_cert
= STRBUF_INIT
;
75 static struct object_id push_cert_oid
;
76 static struct signature_check sigcheck
;
77 static const char *push_cert_nonce
;
78 static const char *cert_nonce_seed
;
80 static const char *NONCE_UNSOLICITED
= "UNSOLICITED";
81 static const char *NONCE_BAD
= "BAD";
82 static const char *NONCE_MISSING
= "MISSING";
83 static const char *NONCE_OK
= "OK";
84 static const char *NONCE_SLOP
= "SLOP";
85 static const char *nonce_status
;
86 static long nonce_stamp_slop
;
87 static timestamp_t nonce_stamp_slop_limit
;
88 static struct ref_transaction
*transaction
;
95 static int keepalive_in_sec
= 5;
97 static struct tmp_objdir
*tmp_objdir
;
99 static enum deny_action
parse_deny_action(const char *var
, const char *value
)
102 if (!strcasecmp(value
, "ignore"))
104 if (!strcasecmp(value
, "warn"))
106 if (!strcasecmp(value
, "refuse"))
108 if (!strcasecmp(value
, "updateinstead"))
109 return DENY_UPDATE_INSTEAD
;
111 if (git_config_bool(var
, value
))
116 static int receive_pack_config(const char *var
, const char *value
, void *cb
)
118 int status
= parse_hide_refs_config(var
, value
, "receive");
123 if (strcmp(var
, "receive.denydeletes") == 0) {
124 deny_deletes
= git_config_bool(var
, value
);
128 if (strcmp(var
, "receive.denynonfastforwards") == 0) {
129 deny_non_fast_forwards
= git_config_bool(var
, value
);
133 if (strcmp(var
, "receive.unpacklimit") == 0) {
134 receive_unpack_limit
= git_config_int(var
, value
);
138 if (strcmp(var
, "transfer.unpacklimit") == 0) {
139 transfer_unpack_limit
= git_config_int(var
, value
);
143 if (strcmp(var
, "receive.fsck.skiplist") == 0) {
146 if (git_config_pathname(&path
, var
, value
))
148 strbuf_addf(&fsck_msg_types
, "%cskiplist=%s",
149 fsck_msg_types
.len
? ',' : '=', path
);
154 if (skip_prefix(var
, "receive.fsck.", &var
)) {
155 if (is_valid_msg_type(var
, value
))
156 strbuf_addf(&fsck_msg_types
, "%c%s=%s",
157 fsck_msg_types
.len
? ',' : '=', var
, value
);
159 warning("Skipping unknown msg id '%s'", var
);
163 if (strcmp(var
, "receive.fsckobjects") == 0) {
164 receive_fsck_objects
= git_config_bool(var
, value
);
168 if (strcmp(var
, "transfer.fsckobjects") == 0) {
169 transfer_fsck_objects
= git_config_bool(var
, value
);
173 if (!strcmp(var
, "receive.denycurrentbranch")) {
174 deny_current_branch
= parse_deny_action(var
, value
);
178 if (strcmp(var
, "receive.denydeletecurrent") == 0) {
179 deny_delete_current
= parse_deny_action(var
, value
);
183 if (strcmp(var
, "repack.usedeltabaseoffset") == 0) {
184 prefer_ofs_delta
= git_config_bool(var
, value
);
188 if (strcmp(var
, "receive.updateserverinfo") == 0) {
189 auto_update_server_info
= git_config_bool(var
, value
);
193 if (strcmp(var
, "receive.autogc") == 0) {
194 auto_gc
= git_config_bool(var
, value
);
198 if (strcmp(var
, "receive.shallowupdate") == 0) {
199 shallow_update
= git_config_bool(var
, value
);
203 if (strcmp(var
, "receive.certnonceseed") == 0)
204 return git_config_string(&cert_nonce_seed
, var
, value
);
206 if (strcmp(var
, "receive.certnonceslop") == 0) {
207 nonce_stamp_slop_limit
= git_config_ulong(var
, value
);
211 if (strcmp(var
, "receive.advertiseatomic") == 0) {
212 advertise_atomic_push
= git_config_bool(var
, value
);
216 if (strcmp(var
, "receive.advertisepushoptions") == 0) {
217 advertise_push_options
= git_config_bool(var
, value
);
221 if (strcmp(var
, "receive.keepalive") == 0) {
222 keepalive_in_sec
= git_config_int(var
, value
);
226 if (strcmp(var
, "receive.maxinputsize") == 0) {
227 max_input_size
= git_config_int64(var
, value
);
231 return git_default_config(var
, value
, cb
);
234 static void show_ref(const char *path
, const struct object_id
*oid
)
236 if (sent_capabilities
) {
237 packet_write_fmt(1, "%s %s\n", oid_to_hex(oid
), path
);
239 struct strbuf cap
= STRBUF_INIT
;
242 "report-status delete-refs side-band-64k quiet");
243 if (advertise_atomic_push
)
244 strbuf_addstr(&cap
, " atomic");
245 if (prefer_ofs_delta
)
246 strbuf_addstr(&cap
, " ofs-delta");
248 strbuf_addf(&cap
, " push-cert=%s", push_cert_nonce
);
249 if (advertise_push_options
)
250 strbuf_addstr(&cap
, " push-options");
251 strbuf_addf(&cap
, " agent=%s", git_user_agent_sanitized());
252 packet_write_fmt(1, "%s %s%c%s\n",
253 oid_to_hex(oid
), path
, 0, cap
.buf
);
254 strbuf_release(&cap
);
255 sent_capabilities
= 1;
259 static int show_ref_cb(const char *path_full
, const struct object_id
*oid
,
260 int flag
, void *data
)
262 struct oidset
*seen
= data
;
263 const char *path
= strip_namespace(path_full
);
265 if (ref_is_hidden(path
, path_full
))
269 * Advertise refs outside our current namespace as ".have"
270 * refs, so that the client can use them to minimize data
271 * transfer but will otherwise ignore them.
274 if (oidset_insert(seen
, oid
))
278 oidset_insert(seen
, oid
);
284 static void show_one_alternate_ref(const struct object_id
*oid
,
287 struct oidset
*seen
= data
;
289 if (oidset_insert(seen
, oid
))
292 show_ref(".have", oid
);
295 static void write_head_info(void)
297 static struct oidset seen
= OIDSET_INIT
;
299 for_each_ref(show_ref_cb
, &seen
);
300 for_each_alternate_ref(show_one_alternate_ref
, &seen
);
302 if (!sent_capabilities
)
303 show_ref("capabilities^{}", &null_oid
);
305 advertise_shallow_grafts(1);
312 struct command
*next
;
313 const char *error_string
;
314 unsigned int skip_update
:1,
317 struct object_id old_oid
;
318 struct object_id new_oid
;
319 char ref_name
[FLEX_ARRAY
]; /* more */
322 static void rp_error(const char *err
, ...) __attribute__((format (printf
, 1, 2)));
323 static void rp_warning(const char *err
, ...) __attribute__((format (printf
, 1, 2)));
325 static void report_message(const char *prefix
, const char *err
, va_list params
)
330 sz
= xsnprintf(msg
, sizeof(msg
), "%s", prefix
);
331 sz
+= vsnprintf(msg
+ sz
, sizeof(msg
) - sz
, err
, params
);
332 if (sz
> (sizeof(msg
) - 1))
333 sz
= sizeof(msg
) - 1;
337 send_sideband(1, 2, msg
, sz
, use_sideband
);
342 static void rp_warning(const char *err
, ...)
345 va_start(params
, err
);
346 report_message("warning: ", err
, params
);
350 static void rp_error(const char *err
, ...)
353 va_start(params
, err
);
354 report_message("error: ", err
, params
);
358 static int copy_to_sideband(int in
, int out
, void *arg
)
361 int keepalive_active
= 0;
363 if (keepalive_in_sec
<= 0)
364 use_keepalive
= KEEPALIVE_NEVER
;
365 if (use_keepalive
== KEEPALIVE_ALWAYS
)
366 keepalive_active
= 1;
371 if (keepalive_active
) {
377 ret
= poll(&pfd
, 1, 1000 * keepalive_in_sec
);
384 } else if (ret
== 0) {
385 /* no data; send a keepalive packet */
386 static const char buf
[] = "0005\1";
387 write_or_die(1, buf
, sizeof(buf
) - 1);
389 } /* else there is actual data to read */
392 sz
= xread(in
, data
, sizeof(data
));
396 if (use_keepalive
== KEEPALIVE_AFTER_NUL
&& !keepalive_active
) {
397 const char *p
= memchr(data
, '\0', sz
);
400 * The NUL tells us to start sending keepalives. Make
401 * sure we send any other data we read along
404 keepalive_active
= 1;
405 send_sideband(1, 2, data
, p
- data
, use_sideband
);
406 send_sideband(1, 2, p
+ 1, sz
- (p
- data
+ 1), use_sideband
);
412 * Either we're not looking for a NUL signal, or we didn't see
413 * it yet; just pass along the data.
415 send_sideband(1, 2, data
, sz
, use_sideband
);
421 #define HMAC_BLOCK_SIZE 64
423 static void hmac_sha1(unsigned char *out
,
424 const char *key_in
, size_t key_len
,
425 const char *text
, size_t text_len
)
427 unsigned char key
[HMAC_BLOCK_SIZE
];
428 unsigned char k_ipad
[HMAC_BLOCK_SIZE
];
429 unsigned char k_opad
[HMAC_BLOCK_SIZE
];
433 /* RFC 2104 2. (1) */
434 memset(key
, '\0', HMAC_BLOCK_SIZE
);
435 if (HMAC_BLOCK_SIZE
< key_len
) {
437 git_SHA1_Update(&ctx
, key_in
, key_len
);
438 git_SHA1_Final(key
, &ctx
);
440 memcpy(key
, key_in
, key_len
);
443 /* RFC 2104 2. (2) & (5) */
444 for (i
= 0; i
< sizeof(key
); i
++) {
445 k_ipad
[i
] = key
[i
] ^ 0x36;
446 k_opad
[i
] = key
[i
] ^ 0x5c;
449 /* RFC 2104 2. (3) & (4) */
451 git_SHA1_Update(&ctx
, k_ipad
, sizeof(k_ipad
));
452 git_SHA1_Update(&ctx
, text
, text_len
);
453 git_SHA1_Final(out
, &ctx
);
455 /* RFC 2104 2. (6) & (7) */
457 git_SHA1_Update(&ctx
, k_opad
, sizeof(k_opad
));
458 git_SHA1_Update(&ctx
, out
, GIT_SHA1_RAWSZ
);
459 git_SHA1_Final(out
, &ctx
);
462 static char *prepare_push_cert_nonce(const char *path
, timestamp_t stamp
)
464 struct strbuf buf
= STRBUF_INIT
;
465 unsigned char sha1
[GIT_SHA1_RAWSZ
];
467 strbuf_addf(&buf
, "%s:%"PRItime
, path
, stamp
);
468 hmac_sha1(sha1
, buf
.buf
, buf
.len
, cert_nonce_seed
, strlen(cert_nonce_seed
));
469 strbuf_release(&buf
);
471 /* RFC 2104 5. HMAC-SHA1-80 */
472 strbuf_addf(&buf
, "%"PRItime
"-%.*s", stamp
, GIT_SHA1_HEXSZ
, sha1_to_hex(sha1
));
473 return strbuf_detach(&buf
, NULL
);
477 * NEEDSWORK: reuse find_commit_header() from jk/commit-author-parsing
478 * after dropping "_commit" from its name and possibly moving it out
481 static char *find_header(const char *msg
, size_t len
, const char *key
,
482 const char **next_line
)
484 int key_len
= strlen(key
);
485 const char *line
= msg
;
487 while (line
&& line
< msg
+ len
) {
488 const char *eol
= strchrnul(line
, '\n');
490 if ((msg
+ len
<= eol
) || line
== eol
)
492 if (line
+ key_len
< eol
&&
493 !memcmp(line
, key
, key_len
) && line
[key_len
] == ' ') {
494 int offset
= key_len
+ 1;
496 *next_line
= *eol
? eol
+ 1 : eol
;
497 return xmemdupz(line
+ offset
, (eol
- line
) - offset
);
499 line
= *eol
? eol
+ 1 : NULL
;
504 static const char *check_nonce(const char *buf
, size_t len
)
506 char *nonce
= find_header(buf
, len
, "nonce", NULL
);
507 timestamp_t stamp
, ostamp
;
508 char *bohmac
, *expect
= NULL
;
509 const char *retval
= NONCE_BAD
;
512 retval
= NONCE_MISSING
;
514 } else if (!push_cert_nonce
) {
515 retval
= NONCE_UNSOLICITED
;
517 } else if (!strcmp(push_cert_nonce
, nonce
)) {
522 if (!stateless_rpc
) {
523 /* returned nonce MUST match what we gave out earlier */
529 * In stateless mode, we may be receiving a nonce issued by
530 * another instance of the server that serving the same
531 * repository, and the timestamps may not match, but the
532 * nonce-seed and dir should match, so we can recompute and
533 * report the time slop.
535 * In addition, when a nonce issued by another instance has
536 * timestamp within receive.certnonceslop seconds, we pretend
537 * as if we issued that nonce when reporting to the hook.
540 /* nonce is concat(<seconds-since-epoch>, "-", <hmac>) */
541 if (*nonce
<= '0' || '9' < *nonce
) {
545 stamp
= parse_timestamp(nonce
, &bohmac
, 10);
546 if (bohmac
== nonce
|| bohmac
[0] != '-') {
551 expect
= prepare_push_cert_nonce(service_dir
, stamp
);
552 if (strcmp(expect
, nonce
)) {
553 /* Not what we would have signed earlier */
559 * By how many seconds is this nonce stale? Negative value
560 * would mean it was issued by another server with its clock
561 * skewed in the future.
563 ostamp
= parse_timestamp(push_cert_nonce
, NULL
, 10);
564 nonce_stamp_slop
= (long)ostamp
- (long)stamp
;
566 if (nonce_stamp_slop_limit
&&
567 labs(nonce_stamp_slop
) <= nonce_stamp_slop_limit
) {
569 * Pretend as if the received nonce (which passes the
570 * HMAC check, so it is not a forged by third-party)
573 free((void *)push_cert_nonce
);
574 push_cert_nonce
= xstrdup(nonce
);
587 * Return 1 if there is no push_cert or if the push options in push_cert are
588 * the same as those in the argument; 0 otherwise.
590 static int check_cert_push_options(const struct string_list
*push_options
)
592 const char *buf
= push_cert
.buf
;
593 int len
= push_cert
.len
;
596 const char *next_line
;
597 int options_seen
= 0;
604 while ((option
= find_header(buf
, len
, "push-option", &next_line
))) {
605 len
-= (next_line
- buf
);
608 if (options_seen
> push_options
->nr
610 push_options
->items
[options_seen
- 1].string
)) {
617 if (options_seen
!= push_options
->nr
)
625 static void prepare_push_cert_sha1(struct child_process
*proc
)
627 static int already_done
;
633 int bogs
/* beginning_of_gpg_sig */;
636 if (write_object_file(push_cert
.buf
, push_cert
.len
, "blob",
638 oidclr(&push_cert_oid
);
640 memset(&sigcheck
, '\0', sizeof(sigcheck
));
642 bogs
= parse_signature(push_cert
.buf
, push_cert
.len
);
643 check_signature(push_cert
.buf
, bogs
, push_cert
.buf
+ bogs
,
644 push_cert
.len
- bogs
, &sigcheck
);
646 nonce_status
= check_nonce(push_cert
.buf
, bogs
);
648 if (!is_null_oid(&push_cert_oid
)) {
649 argv_array_pushf(&proc
->env_array
, "GIT_PUSH_CERT=%s",
650 oid_to_hex(&push_cert_oid
));
651 argv_array_pushf(&proc
->env_array
, "GIT_PUSH_CERT_SIGNER=%s",
652 sigcheck
.signer
? sigcheck
.signer
: "");
653 argv_array_pushf(&proc
->env_array
, "GIT_PUSH_CERT_KEY=%s",
654 sigcheck
.key
? sigcheck
.key
: "");
655 argv_array_pushf(&proc
->env_array
, "GIT_PUSH_CERT_STATUS=%c",
657 if (push_cert_nonce
) {
658 argv_array_pushf(&proc
->env_array
,
659 "GIT_PUSH_CERT_NONCE=%s",
661 argv_array_pushf(&proc
->env_array
,
662 "GIT_PUSH_CERT_NONCE_STATUS=%s",
664 if (nonce_status
== NONCE_SLOP
)
665 argv_array_pushf(&proc
->env_array
,
666 "GIT_PUSH_CERT_NONCE_SLOP=%ld",
672 struct receive_hook_feed_state
{
676 const struct string_list
*push_options
;
679 typedef int (*feed_fn
)(void *, const char **, size_t *);
680 static int run_and_feed_hook(const char *hook_name
, feed_fn feed
,
681 struct receive_hook_feed_state
*feed_state
)
683 struct child_process proc
= CHILD_PROCESS_INIT
;
688 argv
[0] = find_hook(hook_name
);
696 proc
.stdout_to_stderr
= 1;
697 if (feed_state
->push_options
) {
699 for (i
= 0; i
< feed_state
->push_options
->nr
; i
++)
700 argv_array_pushf(&proc
.env_array
,
701 "GIT_PUSH_OPTION_%d=%s", i
,
702 feed_state
->push_options
->items
[i
].string
);
703 argv_array_pushf(&proc
.env_array
, "GIT_PUSH_OPTION_COUNT=%d",
704 feed_state
->push_options
->nr
);
706 argv_array_pushf(&proc
.env_array
, "GIT_PUSH_OPTION_COUNT");
709 argv_array_pushv(&proc
.env_array
, tmp_objdir_env(tmp_objdir
));
712 memset(&muxer
, 0, sizeof(muxer
));
713 muxer
.proc
= copy_to_sideband
;
715 code
= start_async(&muxer
);
721 prepare_push_cert_sha1(&proc
);
723 code
= start_command(&proc
);
726 finish_async(&muxer
);
730 sigchain_push(SIGPIPE
, SIG_IGN
);
735 if (feed(feed_state
, &buf
, &n
))
737 if (write_in_full(proc
.in
, buf
, n
) < 0)
742 finish_async(&muxer
);
744 sigchain_pop(SIGPIPE
);
746 return finish_command(&proc
);
749 static int feed_receive_hook(void *state_
, const char **bufp
, size_t *sizep
)
751 struct receive_hook_feed_state
*state
= state_
;
752 struct command
*cmd
= state
->cmd
;
755 state
->skip_broken
&& (cmd
->error_string
|| cmd
->did_not_exist
))
759 strbuf_reset(&state
->buf
);
760 strbuf_addf(&state
->buf
, "%s %s %s\n",
761 oid_to_hex(&cmd
->old_oid
), oid_to_hex(&cmd
->new_oid
),
763 state
->cmd
= cmd
->next
;
765 *bufp
= state
->buf
.buf
;
766 *sizep
= state
->buf
.len
;
771 static int run_receive_hook(struct command
*commands
,
772 const char *hook_name
,
774 const struct string_list
*push_options
)
776 struct receive_hook_feed_state state
;
779 strbuf_init(&state
.buf
, 0);
780 state
.cmd
= commands
;
781 state
.skip_broken
= skip_broken
;
782 if (feed_receive_hook(&state
, NULL
, NULL
))
784 state
.cmd
= commands
;
785 state
.push_options
= push_options
;
786 status
= run_and_feed_hook(hook_name
, feed_receive_hook
, &state
);
787 strbuf_release(&state
.buf
);
791 static int run_update_hook(struct command
*cmd
)
794 struct child_process proc
= CHILD_PROCESS_INIT
;
797 argv
[0] = find_hook("update");
801 argv
[1] = cmd
->ref_name
;
802 argv
[2] = oid_to_hex(&cmd
->old_oid
);
803 argv
[3] = oid_to_hex(&cmd
->new_oid
);
807 proc
.stdout_to_stderr
= 1;
808 proc
.err
= use_sideband
? -1 : 0;
811 code
= start_command(&proc
);
815 copy_to_sideband(proc
.err
, -1, NULL
);
816 return finish_command(&proc
);
819 static int is_ref_checked_out(const char *ref
)
821 if (is_bare_repository())
826 return !strcmp(head_name
, ref
);
829 static char *refuse_unconfigured_deny_msg
=
830 N_("By default, updating the current branch in a non-bare repository\n"
831 "is denied, because it will make the index and work tree inconsistent\n"
832 "with what you pushed, and will require 'git reset --hard' to match\n"
833 "the work tree to HEAD.\n"
835 "You can set the 'receive.denyCurrentBranch' configuration variable\n"
836 "to 'ignore' or 'warn' in the remote repository to allow pushing into\n"
837 "its current branch; however, this is not recommended unless you\n"
838 "arranged to update its work tree to match what you pushed in some\n"
841 "To squelch this message and still keep the default behaviour, set\n"
842 "'receive.denyCurrentBranch' configuration variable to 'refuse'.");
844 static void refuse_unconfigured_deny(void)
846 rp_error("%s", _(refuse_unconfigured_deny_msg
));
849 static char *refuse_unconfigured_deny_delete_current_msg
=
850 N_("By default, deleting the current branch is denied, because the next\n"
851 "'git clone' won't result in any file checked out, causing confusion.\n"
853 "You can set 'receive.denyDeleteCurrent' configuration variable to\n"
854 "'warn' or 'ignore' in the remote repository to allow deleting the\n"
855 "current branch, with or without a warning message.\n"
857 "To squelch this message, you can set it to 'refuse'.");
859 static void refuse_unconfigured_deny_delete_current(void)
861 rp_error("%s", _(refuse_unconfigured_deny_delete_current_msg
));
864 static int command_singleton_iterator(void *cb_data
, struct object_id
*oid
);
865 static int update_shallow_ref(struct command
*cmd
, struct shallow_info
*si
)
867 struct lock_file shallow_lock
= LOCK_INIT
;
868 struct oid_array extra
= OID_ARRAY_INIT
;
869 struct check_connected_options opt
= CHECK_CONNECTED_INIT
;
870 uint32_t mask
= 1 << (cmd
->index
% 32);
873 trace_printf_key(&trace_shallow
,
874 "shallow: update_shallow_ref %s\n", cmd
->ref_name
);
875 for (i
= 0; i
< si
->shallow
->nr
; i
++)
876 if (si
->used_shallow
[i
] &&
877 (si
->used_shallow
[i
][cmd
->index
/ 32] & mask
) &&
878 !delayed_reachability_test(si
, i
))
879 oid_array_append(&extra
, &si
->shallow
->oid
[i
]);
881 opt
.env
= tmp_objdir_env(tmp_objdir
);
882 setup_alternate_shallow(&shallow_lock
, &opt
.shallow_file
, &extra
);
883 if (check_connected(command_singleton_iterator
, cmd
, &opt
)) {
884 rollback_lock_file(&shallow_lock
);
885 oid_array_clear(&extra
);
889 commit_lock_file(&shallow_lock
);
892 * Make sure setup_alternate_shallow() for the next ref does
893 * not lose these new roots..
895 for (i
= 0; i
< extra
.nr
; i
++)
896 register_shallow(the_repository
, &extra
.oid
[i
]);
898 si
->shallow_ref
[cmd
->index
] = 0;
899 oid_array_clear(&extra
);
904 * NEEDSWORK: we should consolidate various implementions of "are we
905 * on an unborn branch?" test into one, and make the unified one more
906 * robust. !get_sha1() based check used here and elsewhere would not
907 * allow us to tell an unborn branch from corrupt ref, for example.
908 * For the purpose of fixing "deploy-to-update does not work when
909 * pushing into an empty repository" issue, this should suffice for
912 static int head_has_history(void)
914 struct object_id oid
;
916 return !get_oid("HEAD", &oid
);
919 static const char *push_to_deploy(unsigned char *sha1
,
920 struct argv_array
*env
,
921 const char *work_tree
)
923 const char *update_refresh
[] = {
924 "update-index", "-q", "--ignore-submodules", "--refresh", NULL
926 const char *diff_files
[] = {
927 "diff-files", "--quiet", "--ignore-submodules", "--", NULL
929 const char *diff_index
[] = {
930 "diff-index", "--quiet", "--cached", "--ignore-submodules",
933 const char *read_tree
[] = {
934 "read-tree", "-u", "-m", NULL
, NULL
936 struct child_process child
= CHILD_PROCESS_INIT
;
938 child
.argv
= update_refresh
;
939 child
.env
= env
->argv
;
940 child
.dir
= work_tree
;
942 child
.stdout_to_stderr
= 1;
944 if (run_command(&child
))
945 return "Up-to-date check failed";
947 /* run_command() does not clean up completely; reinitialize */
948 child_process_init(&child
);
949 child
.argv
= diff_files
;
950 child
.env
= env
->argv
;
951 child
.dir
= work_tree
;
953 child
.stdout_to_stderr
= 1;
955 if (run_command(&child
))
956 return "Working directory has unstaged changes";
958 /* diff-index with either HEAD or an empty tree */
959 diff_index
[4] = head_has_history() ? "HEAD" : empty_tree_oid_hex();
961 child_process_init(&child
);
962 child
.argv
= diff_index
;
963 child
.env
= env
->argv
;
966 child
.stdout_to_stderr
= 0;
968 if (run_command(&child
))
969 return "Working directory has staged changes";
971 read_tree
[3] = sha1_to_hex(sha1
);
972 child_process_init(&child
);
973 child
.argv
= read_tree
;
974 child
.env
= env
->argv
;
975 child
.dir
= work_tree
;
978 child
.stdout_to_stderr
= 0;
980 if (run_command(&child
))
981 return "Could not update working tree to new HEAD";
986 static const char *push_to_checkout_hook
= "push-to-checkout";
988 static const char *push_to_checkout(unsigned char *sha1
,
989 struct argv_array
*env
,
990 const char *work_tree
)
992 argv_array_pushf(env
, "GIT_WORK_TREE=%s", absolute_path(work_tree
));
993 if (run_hook_le(env
->argv
, push_to_checkout_hook
,
994 sha1_to_hex(sha1
), NULL
))
995 return "push-to-checkout hook declined";
1000 static const char *update_worktree(unsigned char *sha1
)
1003 const char *work_tree
= git_work_tree_cfg
? git_work_tree_cfg
: "..";
1004 struct argv_array env
= ARGV_ARRAY_INIT
;
1006 if (is_bare_repository())
1007 return "denyCurrentBranch = updateInstead needs a worktree";
1009 argv_array_pushf(&env
, "GIT_DIR=%s", absolute_path(get_git_dir()));
1011 if (!find_hook(push_to_checkout_hook
))
1012 retval
= push_to_deploy(sha1
, &env
, work_tree
);
1014 retval
= push_to_checkout(sha1
, &env
, work_tree
);
1016 argv_array_clear(&env
);
1020 static const char *update(struct command
*cmd
, struct shallow_info
*si
)
1022 const char *name
= cmd
->ref_name
;
1023 struct strbuf namespaced_name_buf
= STRBUF_INIT
;
1024 static char *namespaced_name
;
1026 struct object_id
*old_oid
= &cmd
->old_oid
;
1027 struct object_id
*new_oid
= &cmd
->new_oid
;
1029 /* only refs/... are allowed */
1030 if (!starts_with(name
, "refs/") || check_refname_format(name
+ 5, 0)) {
1031 rp_error("refusing to create funny ref '%s' remotely", name
);
1032 return "funny refname";
1035 strbuf_addf(&namespaced_name_buf
, "%s%s", get_git_namespace(), name
);
1036 free(namespaced_name
);
1037 namespaced_name
= strbuf_detach(&namespaced_name_buf
, NULL
);
1039 if (is_ref_checked_out(namespaced_name
)) {
1040 switch (deny_current_branch
) {
1044 rp_warning("updating the current branch");
1047 case DENY_UNCONFIGURED
:
1048 rp_error("refusing to update checked out branch: %s", name
);
1049 if (deny_current_branch
== DENY_UNCONFIGURED
)
1050 refuse_unconfigured_deny();
1051 return "branch is currently checked out";
1052 case DENY_UPDATE_INSTEAD
:
1053 ret
= update_worktree(new_oid
->hash
);
1060 if (!is_null_oid(new_oid
) && !has_object_file(new_oid
)) {
1061 error("unpack should have generated %s, "
1062 "but I can't find it!", oid_to_hex(new_oid
));
1066 if (!is_null_oid(old_oid
) && is_null_oid(new_oid
)) {
1067 if (deny_deletes
&& starts_with(name
, "refs/heads/")) {
1068 rp_error("denying ref deletion for %s", name
);
1069 return "deletion prohibited";
1072 if (head_name
&& !strcmp(namespaced_name
, head_name
)) {
1073 switch (deny_delete_current
) {
1077 rp_warning("deleting the current branch");
1080 case DENY_UNCONFIGURED
:
1081 case DENY_UPDATE_INSTEAD
:
1082 if (deny_delete_current
== DENY_UNCONFIGURED
)
1083 refuse_unconfigured_deny_delete_current();
1084 rp_error("refusing to delete the current branch: %s", name
);
1085 return "deletion of the current branch prohibited";
1087 return "Invalid denyDeleteCurrent setting";
1092 if (deny_non_fast_forwards
&& !is_null_oid(new_oid
) &&
1093 !is_null_oid(old_oid
) &&
1094 starts_with(name
, "refs/heads/")) {
1095 struct object
*old_object
, *new_object
;
1096 struct commit
*old_commit
, *new_commit
;
1098 old_object
= parse_object(the_repository
, old_oid
);
1099 new_object
= parse_object(the_repository
, new_oid
);
1101 if (!old_object
|| !new_object
||
1102 old_object
->type
!= OBJ_COMMIT
||
1103 new_object
->type
!= OBJ_COMMIT
) {
1104 error("bad sha1 objects for %s", name
);
1107 old_commit
= (struct commit
*)old_object
;
1108 new_commit
= (struct commit
*)new_object
;
1109 if (!in_merge_bases(old_commit
, new_commit
)) {
1110 rp_error("denying non-fast-forward %s"
1111 " (you should pull first)", name
);
1112 return "non-fast-forward";
1115 if (run_update_hook(cmd
)) {
1116 rp_error("hook declined to update %s", name
);
1117 return "hook declined";
1120 if (is_null_oid(new_oid
)) {
1121 struct strbuf err
= STRBUF_INIT
;
1122 if (!parse_object(the_repository
, old_oid
)) {
1124 if (ref_exists(name
)) {
1125 rp_warning("Allowing deletion of corrupt ref.");
1127 rp_warning("Deleting a non-existent ref.");
1128 cmd
->did_not_exist
= 1;
1131 if (ref_transaction_delete(transaction
,
1135 rp_error("%s", err
.buf
);
1136 strbuf_release(&err
);
1137 return "failed to delete";
1139 strbuf_release(&err
);
1140 return NULL
; /* good */
1143 struct strbuf err
= STRBUF_INIT
;
1144 if (shallow_update
&& si
->shallow_ref
[cmd
->index
] &&
1145 update_shallow_ref(cmd
, si
))
1146 return "shallow error";
1148 if (ref_transaction_update(transaction
,
1153 rp_error("%s", err
.buf
);
1154 strbuf_release(&err
);
1156 return "failed to update ref";
1158 strbuf_release(&err
);
1160 return NULL
; /* good */
1164 static void run_update_post_hook(struct command
*commands
)
1166 struct command
*cmd
;
1167 struct child_process proc
= CHILD_PROCESS_INIT
;
1170 hook
= find_hook("post-update");
1174 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1175 if (cmd
->error_string
|| cmd
->did_not_exist
)
1177 if (!proc
.args
.argc
)
1178 argv_array_push(&proc
.args
, hook
);
1179 argv_array_push(&proc
.args
, cmd
->ref_name
);
1181 if (!proc
.args
.argc
)
1185 proc
.stdout_to_stderr
= 1;
1186 proc
.err
= use_sideband
? -1 : 0;
1188 if (!start_command(&proc
)) {
1190 copy_to_sideband(proc
.err
, -1, NULL
);
1191 finish_command(&proc
);
1195 static void check_aliased_update(struct command
*cmd
, struct string_list
*list
)
1197 struct strbuf buf
= STRBUF_INIT
;
1198 const char *dst_name
;
1199 struct string_list_item
*item
;
1200 struct command
*dst_cmd
;
1203 strbuf_addf(&buf
, "%s%s", get_git_namespace(), cmd
->ref_name
);
1204 dst_name
= resolve_ref_unsafe(buf
.buf
, 0, NULL
, &flag
);
1205 strbuf_release(&buf
);
1207 if (!(flag
& REF_ISSYMREF
))
1211 rp_error("refusing update to broken symref '%s'", cmd
->ref_name
);
1212 cmd
->skip_update
= 1;
1213 cmd
->error_string
= "broken symref";
1216 dst_name
= strip_namespace(dst_name
);
1218 if ((item
= string_list_lookup(list
, dst_name
)) == NULL
)
1221 cmd
->skip_update
= 1;
1223 dst_cmd
= (struct command
*) item
->util
;
1225 if (oideq(&cmd
->old_oid
, &dst_cmd
->old_oid
) &&
1226 oideq(&cmd
->new_oid
, &dst_cmd
->new_oid
))
1229 dst_cmd
->skip_update
= 1;
1231 rp_error("refusing inconsistent update between symref '%s' (%s..%s) and"
1232 " its target '%s' (%s..%s)",
1234 find_unique_abbrev(&cmd
->old_oid
, DEFAULT_ABBREV
),
1235 find_unique_abbrev(&cmd
->new_oid
, DEFAULT_ABBREV
),
1237 find_unique_abbrev(&dst_cmd
->old_oid
, DEFAULT_ABBREV
),
1238 find_unique_abbrev(&dst_cmd
->new_oid
, DEFAULT_ABBREV
));
1240 cmd
->error_string
= dst_cmd
->error_string
=
1241 "inconsistent aliased update";
1244 static void check_aliased_updates(struct command
*commands
)
1246 struct command
*cmd
;
1247 struct string_list ref_list
= STRING_LIST_INIT_NODUP
;
1249 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1250 struct string_list_item
*item
=
1251 string_list_append(&ref_list
, cmd
->ref_name
);
1252 item
->util
= (void *)cmd
;
1254 string_list_sort(&ref_list
);
1256 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1257 if (!cmd
->error_string
)
1258 check_aliased_update(cmd
, &ref_list
);
1261 string_list_clear(&ref_list
, 0);
1264 static int command_singleton_iterator(void *cb_data
, struct object_id
*oid
)
1266 struct command
**cmd_list
= cb_data
;
1267 struct command
*cmd
= *cmd_list
;
1269 if (!cmd
|| is_null_oid(&cmd
->new_oid
))
1270 return -1; /* end of list */
1271 *cmd_list
= NULL
; /* this returns only one */
1272 oidcpy(oid
, &cmd
->new_oid
);
1276 static void set_connectivity_errors(struct command
*commands
,
1277 struct shallow_info
*si
)
1279 struct command
*cmd
;
1281 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1282 struct command
*singleton
= cmd
;
1283 struct check_connected_options opt
= CHECK_CONNECTED_INIT
;
1285 if (shallow_update
&& si
->shallow_ref
[cmd
->index
])
1286 /* to be checked in update_shallow_ref() */
1289 opt
.env
= tmp_objdir_env(tmp_objdir
);
1290 if (!check_connected(command_singleton_iterator
, &singleton
,
1294 cmd
->error_string
= "missing necessary objects";
1298 struct iterate_data
{
1299 struct command
*cmds
;
1300 struct shallow_info
*si
;
1303 static int iterate_receive_command_list(void *cb_data
, struct object_id
*oid
)
1305 struct iterate_data
*data
= cb_data
;
1306 struct command
**cmd_list
= &data
->cmds
;
1307 struct command
*cmd
= *cmd_list
;
1309 for (; cmd
; cmd
= cmd
->next
) {
1310 if (shallow_update
&& data
->si
->shallow_ref
[cmd
->index
])
1311 /* to be checked in update_shallow_ref() */
1313 if (!is_null_oid(&cmd
->new_oid
) && !cmd
->skip_update
) {
1314 oidcpy(oid
, &cmd
->new_oid
);
1315 *cmd_list
= cmd
->next
;
1320 return -1; /* end of list */
1323 static void reject_updates_to_hidden(struct command
*commands
)
1325 struct strbuf refname_full
= STRBUF_INIT
;
1327 struct command
*cmd
;
1329 strbuf_addstr(&refname_full
, get_git_namespace());
1330 prefix_len
= refname_full
.len
;
1332 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1333 if (cmd
->error_string
)
1336 strbuf_setlen(&refname_full
, prefix_len
);
1337 strbuf_addstr(&refname_full
, cmd
->ref_name
);
1339 if (!ref_is_hidden(cmd
->ref_name
, refname_full
.buf
))
1341 if (is_null_oid(&cmd
->new_oid
))
1342 cmd
->error_string
= "deny deleting a hidden ref";
1344 cmd
->error_string
= "deny updating a hidden ref";
1347 strbuf_release(&refname_full
);
1350 static int should_process_cmd(struct command
*cmd
)
1352 return !cmd
->error_string
&& !cmd
->skip_update
;
1355 static void warn_if_skipped_connectivity_check(struct command
*commands
,
1356 struct shallow_info
*si
)
1358 struct command
*cmd
;
1359 int checked_connectivity
= 1;
1361 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1362 if (should_process_cmd(cmd
) && si
->shallow_ref
[cmd
->index
]) {
1363 error("BUG: connectivity check has not been run on ref %s",
1365 checked_connectivity
= 0;
1368 if (!checked_connectivity
)
1369 BUG("connectivity check skipped???");
1372 static void execute_commands_non_atomic(struct command
*commands
,
1373 struct shallow_info
*si
)
1375 struct command
*cmd
;
1376 struct strbuf err
= STRBUF_INIT
;
1378 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1379 if (!should_process_cmd(cmd
))
1382 transaction
= ref_transaction_begin(&err
);
1384 rp_error("%s", err
.buf
);
1386 cmd
->error_string
= "transaction failed to start";
1390 cmd
->error_string
= update(cmd
, si
);
1392 if (!cmd
->error_string
1393 && ref_transaction_commit(transaction
, &err
)) {
1394 rp_error("%s", err
.buf
);
1396 cmd
->error_string
= "failed to update ref";
1398 ref_transaction_free(transaction
);
1400 strbuf_release(&err
);
1403 static void execute_commands_atomic(struct command
*commands
,
1404 struct shallow_info
*si
)
1406 struct command
*cmd
;
1407 struct strbuf err
= STRBUF_INIT
;
1408 const char *reported_error
= "atomic push failure";
1410 transaction
= ref_transaction_begin(&err
);
1412 rp_error("%s", err
.buf
);
1414 reported_error
= "transaction failed to start";
1418 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1419 if (!should_process_cmd(cmd
))
1422 cmd
->error_string
= update(cmd
, si
);
1424 if (cmd
->error_string
)
1428 if (ref_transaction_commit(transaction
, &err
)) {
1429 rp_error("%s", err
.buf
);
1430 reported_error
= "atomic transaction failed";
1436 for (cmd
= commands
; cmd
; cmd
= cmd
->next
)
1437 if (!cmd
->error_string
)
1438 cmd
->error_string
= reported_error
;
1441 ref_transaction_free(transaction
);
1442 strbuf_release(&err
);
1445 static void execute_commands(struct command
*commands
,
1446 const char *unpacker_error
,
1447 struct shallow_info
*si
,
1448 const struct string_list
*push_options
)
1450 struct check_connected_options opt
= CHECK_CONNECTED_INIT
;
1451 struct command
*cmd
;
1452 struct iterate_data data
;
1456 if (unpacker_error
) {
1457 for (cmd
= commands
; cmd
; cmd
= cmd
->next
)
1458 cmd
->error_string
= "unpacker error";
1463 memset(&muxer
, 0, sizeof(muxer
));
1464 muxer
.proc
= copy_to_sideband
;
1466 if (!start_async(&muxer
))
1468 /* ...else, continue without relaying sideband */
1471 data
.cmds
= commands
;
1473 opt
.err_fd
= err_fd
;
1474 opt
.progress
= err_fd
&& !quiet
;
1475 opt
.env
= tmp_objdir_env(tmp_objdir
);
1476 if (check_connected(iterate_receive_command_list
, &data
, &opt
))
1477 set_connectivity_errors(commands
, si
);
1480 finish_async(&muxer
);
1482 reject_updates_to_hidden(commands
);
1484 if (run_receive_hook(commands
, "pre-receive", 0, push_options
)) {
1485 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1486 if (!cmd
->error_string
)
1487 cmd
->error_string
= "pre-receive hook declined";
1493 * Now we'll start writing out refs, which means the objects need
1494 * to be in their final positions so that other processes can see them.
1496 if (tmp_objdir_migrate(tmp_objdir
) < 0) {
1497 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1498 if (!cmd
->error_string
)
1499 cmd
->error_string
= "unable to migrate objects to permanent storage";
1505 check_aliased_updates(commands
);
1507 free(head_name_to_free
);
1508 head_name
= head_name_to_free
= resolve_refdup("HEAD", 0, NULL
, NULL
);
1511 execute_commands_atomic(commands
, si
);
1513 execute_commands_non_atomic(commands
, si
);
1516 warn_if_skipped_connectivity_check(commands
, si
);
1519 static struct command
**queue_command(struct command
**tail
,
1523 struct object_id old_oid
, new_oid
;
1524 struct command
*cmd
;
1525 const char *refname
;
1529 if (parse_oid_hex(line
, &old_oid
, &p
) ||
1531 parse_oid_hex(p
, &new_oid
, &p
) ||
1533 die("protocol error: expected old/new/ref, got '%s'", line
);
1536 reflen
= linelen
- (p
- line
);
1537 FLEX_ALLOC_MEM(cmd
, ref_name
, refname
, reflen
);
1538 oidcpy(&cmd
->old_oid
, &old_oid
);
1539 oidcpy(&cmd
->new_oid
, &new_oid
);
1544 static void queue_commands_from_cert(struct command
**tail
,
1545 struct strbuf
*push_cert
)
1547 const char *boc
, *eoc
;
1550 die("protocol error: got both push certificate and unsigned commands");
1552 boc
= strstr(push_cert
->buf
, "\n\n");
1554 die("malformed push certificate %.*s", 100, push_cert
->buf
);
1557 eoc
= push_cert
->buf
+ parse_signature(push_cert
->buf
, push_cert
->len
);
1560 const char *eol
= memchr(boc
, '\n', eoc
- boc
);
1561 tail
= queue_command(tail
, boc
, eol
? eol
- boc
: eoc
- boc
);
1562 boc
= eol
? eol
+ 1 : eoc
;
1566 static struct command
*read_head_info(struct oid_array
*shallow
)
1568 struct command
*commands
= NULL
;
1569 struct command
**p
= &commands
;
1574 line
= packet_read_line(0, &len
);
1578 if (len
> 8 && starts_with(line
, "shallow ")) {
1579 struct object_id oid
;
1580 if (get_oid_hex(line
+ 8, &oid
))
1581 die("protocol error: expected shallow sha, got '%s'",
1583 oid_array_append(shallow
, &oid
);
1587 linelen
= strlen(line
);
1588 if (linelen
< len
) {
1589 const char *feature_list
= line
+ linelen
+ 1;
1590 if (parse_feature_request(feature_list
, "report-status"))
1592 if (parse_feature_request(feature_list
, "side-band-64k"))
1593 use_sideband
= LARGE_PACKET_MAX
;
1594 if (parse_feature_request(feature_list
, "quiet"))
1596 if (advertise_atomic_push
1597 && parse_feature_request(feature_list
, "atomic"))
1599 if (advertise_push_options
1600 && parse_feature_request(feature_list
, "push-options"))
1601 use_push_options
= 1;
1604 if (!strcmp(line
, "push-cert")) {
1609 len
= packet_read(0, NULL
, NULL
,
1610 certbuf
, sizeof(certbuf
), 0);
1615 if (!strcmp(certbuf
, "push-cert-end\n"))
1616 break; /* end of cert */
1617 strbuf_addstr(&push_cert
, certbuf
);
1625 p
= queue_command(p
, line
, linelen
);
1629 queue_commands_from_cert(p
, &push_cert
);
1634 static void read_push_options(struct string_list
*options
)
1640 line
= packet_read_line(0, &len
);
1645 string_list_append(options
, line
);
1649 static const char *parse_pack_header(struct pack_header
*hdr
)
1651 switch (read_pack_header(0, hdr
)) {
1653 return "eof before pack header was fully read";
1655 case PH_ERROR_PACK_SIGNATURE
:
1656 return "protocol error (pack signature mismatch detected)";
1658 case PH_ERROR_PROTOCOL
:
1659 return "protocol error (pack version unsupported)";
1662 return "unknown error in parse_pack_header";
1669 static const char *pack_lockfile
;
1671 static void push_header_arg(struct argv_array
*args
, struct pack_header
*hdr
)
1673 argv_array_pushf(args
, "--pack_header=%"PRIu32
",%"PRIu32
,
1674 ntohl(hdr
->hdr_version
), ntohl(hdr
->hdr_entries
));
1677 static const char *unpack(int err_fd
, struct shallow_info
*si
)
1679 struct pack_header hdr
;
1680 const char *hdr_err
;
1682 struct child_process child
= CHILD_PROCESS_INIT
;
1683 int fsck_objects
= (receive_fsck_objects
>= 0
1684 ? receive_fsck_objects
1685 : transfer_fsck_objects
>= 0
1686 ? transfer_fsck_objects
1689 hdr_err
= parse_pack_header(&hdr
);
1696 if (si
->nr_ours
|| si
->nr_theirs
) {
1697 alt_shallow_file
= setup_temporary_shallow(si
->shallow
);
1698 argv_array_push(&child
.args
, "--shallow-file");
1699 argv_array_push(&child
.args
, alt_shallow_file
);
1702 tmp_objdir
= tmp_objdir_create();
1706 return "unable to create temporary object directory";
1708 child
.env
= tmp_objdir_env(tmp_objdir
);
1711 * Normally we just pass the tmp_objdir environment to the child
1712 * processes that do the heavy lifting, but we may need to see these
1713 * objects ourselves to set up shallow information.
1715 tmp_objdir_add_as_alternate(tmp_objdir
);
1717 if (ntohl(hdr
.hdr_entries
) < unpack_limit
) {
1718 argv_array_push(&child
.args
, "unpack-objects");
1719 push_header_arg(&child
.args
, &hdr
);
1721 argv_array_push(&child
.args
, "-q");
1723 argv_array_pushf(&child
.args
, "--strict%s",
1724 fsck_msg_types
.buf
);
1726 argv_array_pushf(&child
.args
, "--max-input-size=%"PRIuMAX
,
1727 (uintmax_t)max_input_size
);
1728 child
.no_stdout
= 1;
1731 status
= run_command(&child
);
1733 return "unpack-objects abnormal exit";
1735 char hostname
[HOST_NAME_MAX
+ 1];
1737 argv_array_pushl(&child
.args
, "index-pack", "--stdin", NULL
);
1738 push_header_arg(&child
.args
, &hdr
);
1740 if (xgethostname(hostname
, sizeof(hostname
)))
1741 xsnprintf(hostname
, sizeof(hostname
), "localhost");
1742 argv_array_pushf(&child
.args
,
1743 "--keep=receive-pack %"PRIuMAX
" on %s",
1744 (uintmax_t)getpid(),
1747 if (!quiet
&& err_fd
)
1748 argv_array_push(&child
.args
, "--show-resolving-progress");
1750 argv_array_push(&child
.args
, "--report-end-of-input");
1752 argv_array_pushf(&child
.args
, "--strict%s",
1753 fsck_msg_types
.buf
);
1755 argv_array_push(&child
.args
, "--fix-thin");
1757 argv_array_pushf(&child
.args
, "--max-input-size=%"PRIuMAX
,
1758 (uintmax_t)max_input_size
);
1762 status
= start_command(&child
);
1764 return "index-pack fork failed";
1765 pack_lockfile
= index_pack_lockfile(child
.out
);
1767 status
= finish_command(&child
);
1769 return "index-pack abnormal exit";
1770 reprepare_packed_git(the_repository
);
1775 static const char *unpack_with_sideband(struct shallow_info
*si
)
1781 return unpack(0, si
);
1783 use_keepalive
= KEEPALIVE_AFTER_NUL
;
1784 memset(&muxer
, 0, sizeof(muxer
));
1785 muxer
.proc
= copy_to_sideband
;
1787 if (start_async(&muxer
))
1790 ret
= unpack(muxer
.in
, si
);
1792 finish_async(&muxer
);
1796 static void prepare_shallow_update(struct command
*commands
,
1797 struct shallow_info
*si
)
1799 int i
, j
, k
, bitmap_size
= DIV_ROUND_UP(si
->ref
->nr
, 32);
1801 ALLOC_ARRAY(si
->used_shallow
, si
->shallow
->nr
);
1802 assign_shallow_commits_to_refs(si
, si
->used_shallow
, NULL
);
1804 si
->need_reachability_test
=
1805 xcalloc(si
->shallow
->nr
, sizeof(*si
->need_reachability_test
));
1807 xcalloc(si
->shallow
->nr
, sizeof(*si
->reachable
));
1808 si
->shallow_ref
= xcalloc(si
->ref
->nr
, sizeof(*si
->shallow_ref
));
1810 for (i
= 0; i
< si
->nr_ours
; i
++)
1811 si
->need_reachability_test
[si
->ours
[i
]] = 1;
1813 for (i
= 0; i
< si
->shallow
->nr
; i
++) {
1814 if (!si
->used_shallow
[i
])
1816 for (j
= 0; j
< bitmap_size
; j
++) {
1817 if (!si
->used_shallow
[i
][j
])
1819 si
->need_reachability_test
[i
]++;
1820 for (k
= 0; k
< 32; k
++)
1821 if (si
->used_shallow
[i
][j
] & (1U << k
))
1822 si
->shallow_ref
[j
* 32 + k
]++;
1826 * true for those associated with some refs and belong
1827 * in "ours" list aka "step 7 not done yet"
1829 si
->need_reachability_test
[i
] =
1830 si
->need_reachability_test
[i
] > 1;
1834 * keep hooks happy by forcing a temporary shallow file via
1835 * env variable because we can't add --shallow-file to every
1836 * command. check_connected() will be done with
1837 * true .git/shallow though.
1839 setenv(GIT_SHALLOW_FILE_ENVIRONMENT
, alt_shallow_file
, 1);
1842 static void update_shallow_info(struct command
*commands
,
1843 struct shallow_info
*si
,
1844 struct oid_array
*ref
)
1846 struct command
*cmd
;
1848 remove_nonexistent_theirs_shallow(si
);
1849 if (!si
->nr_ours
&& !si
->nr_theirs
) {
1854 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1855 if (is_null_oid(&cmd
->new_oid
))
1857 oid_array_append(ref
, &cmd
->new_oid
);
1858 cmd
->index
= ref
->nr
- 1;
1862 if (shallow_update
) {
1863 prepare_shallow_update(commands
, si
);
1867 ALLOC_ARRAY(ref_status
, ref
->nr
);
1868 assign_shallow_commits_to_refs(si
, NULL
, ref_status
);
1869 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1870 if (is_null_oid(&cmd
->new_oid
))
1872 if (ref_status
[cmd
->index
]) {
1873 cmd
->error_string
= "shallow update not allowed";
1874 cmd
->skip_update
= 1;
1880 static void report(struct command
*commands
, const char *unpack_status
)
1882 struct command
*cmd
;
1883 struct strbuf buf
= STRBUF_INIT
;
1885 packet_buf_write(&buf
, "unpack %s\n",
1886 unpack_status
? unpack_status
: "ok");
1887 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1888 if (!cmd
->error_string
)
1889 packet_buf_write(&buf
, "ok %s\n",
1892 packet_buf_write(&buf
, "ng %s %s\n",
1893 cmd
->ref_name
, cmd
->error_string
);
1895 packet_buf_flush(&buf
);
1898 send_sideband(1, 1, buf
.buf
, buf
.len
, use_sideband
);
1900 write_or_die(1, buf
.buf
, buf
.len
);
1901 strbuf_release(&buf
);
1904 static int delete_only(struct command
*commands
)
1906 struct command
*cmd
;
1907 for (cmd
= commands
; cmd
; cmd
= cmd
->next
) {
1908 if (!is_null_oid(&cmd
->new_oid
))
1914 int cmd_receive_pack(int argc
, const char **argv
, const char *prefix
)
1916 int advertise_refs
= 0;
1917 struct command
*commands
;
1918 struct oid_array shallow
= OID_ARRAY_INIT
;
1919 struct oid_array ref
= OID_ARRAY_INIT
;
1920 struct shallow_info si
;
1922 struct option options
[] = {
1923 OPT__QUIET(&quiet
, N_("quiet")),
1924 OPT_HIDDEN_BOOL(0, "stateless-rpc", &stateless_rpc
, NULL
),
1925 OPT_HIDDEN_BOOL(0, "advertise-refs", &advertise_refs
, NULL
),
1926 OPT_HIDDEN_BOOL(0, "reject-thin-pack-for-testing", &reject_thin
, NULL
),
1930 packet_trace_identity("receive-pack");
1932 argc
= parse_options(argc
, argv
, prefix
, options
, receive_pack_usage
, 0);
1935 usage_msg_opt(_("Too many arguments."), receive_pack_usage
, options
);
1937 usage_msg_opt(_("You must specify a directory."), receive_pack_usage
, options
);
1939 service_dir
= argv
[0];
1943 if (!enter_repo(service_dir
, 0))
1944 die("'%s' does not appear to be a git repository", service_dir
);
1946 git_config(receive_pack_config
, NULL
);
1947 if (cert_nonce_seed
)
1948 push_cert_nonce
= prepare_push_cert_nonce(service_dir
, time(NULL
));
1950 if (0 <= transfer_unpack_limit
)
1951 unpack_limit
= transfer_unpack_limit
;
1952 else if (0 <= receive_unpack_limit
)
1953 unpack_limit
= receive_unpack_limit
;
1955 switch (determine_protocol_version_server()) {
1958 * push support for protocol v2 has not been implemented yet,
1959 * so ignore the request to use v2 and fallback to using v0.
1964 * v1 is just the original protocol with a version string,
1965 * so just fall through after writing the version string.
1967 if (advertise_refs
|| !stateless_rpc
)
1968 packet_write_fmt(1, "version 1\n");
1973 case protocol_unknown_version
:
1974 BUG("unknown protocol version");
1977 if (advertise_refs
|| !stateless_rpc
) {
1983 if ((commands
= read_head_info(&shallow
)) != NULL
) {
1984 const char *unpack_status
= NULL
;
1985 struct string_list push_options
= STRING_LIST_INIT_DUP
;
1987 if (use_push_options
)
1988 read_push_options(&push_options
);
1989 if (!check_cert_push_options(&push_options
)) {
1990 struct command
*cmd
;
1991 for (cmd
= commands
; cmd
; cmd
= cmd
->next
)
1992 cmd
->error_string
= "inconsistent push options";
1995 prepare_shallow_info(&si
, &shallow
);
1996 if (!si
.nr_ours
&& !si
.nr_theirs
)
1998 if (!delete_only(commands
)) {
1999 unpack_status
= unpack_with_sideband(&si
);
2000 update_shallow_info(commands
, &si
, &ref
);
2002 use_keepalive
= KEEPALIVE_ALWAYS
;
2003 execute_commands(commands
, unpack_status
, &si
,
2006 unlink_or_warn(pack_lockfile
);
2008 report(commands
, unpack_status
);
2009 run_receive_hook(commands
, "post-receive", 1,
2011 run_update_post_hook(commands
);
2012 string_list_clear(&push_options
, 0);
2014 const char *argv_gc_auto
[] = {
2015 "gc", "--auto", "--quiet", NULL
,
2017 struct child_process proc
= CHILD_PROCESS_INIT
;
2020 proc
.stdout_to_stderr
= 1;
2021 proc
.err
= use_sideband
? -1 : 0;
2023 proc
.argv
= argv_gc_auto
;
2025 close_all_packs(the_repository
->objects
);
2026 if (!start_command(&proc
)) {
2028 copy_to_sideband(proc
.err
, -1, NULL
);
2029 finish_command(&proc
);
2032 if (auto_update_server_info
)
2033 update_server_info(0);
2034 clear_shallow_info(&si
);
2038 oid_array_clear(&shallow
);
2039 oid_array_clear(&ref
);
2040 free((void *)push_cert_nonce
);