6 #include "run-command.h"
10 static const char send_pack_usage
[] =
11 "git-send-pack [--all | --mirror] [--dry-run] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n"
12 " --all and explicit <ref> specification are mutually exclusive.";
14 static struct send_pack_args args
= {
15 /* .receivepack = */ "git-receive-pack",
19 * Make a pack stream and spit it out into file descriptor fd
21 static int pack_objects(int fd
, struct ref
*refs
)
24 * The child becomes pack-objects --revs; we feed
25 * the revision parameters to it via its stdin and
26 * let its stdout go back to the other end.
28 const char *argv
[] = {
36 struct child_process po
;
38 if (args
.use_thin_pack
)
40 memset(&po
, 0, sizeof(po
));
45 if (start_command(&po
))
46 die("git-pack-objects failed (%s)", strerror(errno
));
49 * We feed the pack-objects we just spawned with revision
50 * parameters by writing to the pipe.
55 if (!is_null_sha1(refs
->old_sha1
) &&
56 has_sha1_file(refs
->old_sha1
)) {
57 memcpy(buf
+ 1, sha1_to_hex(refs
->old_sha1
), 40);
60 if (!write_or_whine(po
.in
, buf
, 42,
61 "send-pack: send refs"))
64 if (!is_null_sha1(refs
->new_sha1
)) {
65 memcpy(buf
, sha1_to_hex(refs
->new_sha1
), 40);
67 if (!write_or_whine(po
.in
, buf
, 41,
68 "send-pack: send refs"))
74 if (finish_command(&po
))
75 return error("pack-objects died with strange error");
79 static void unmark_and_free(struct commit_list
*list
, unsigned int mark
)
82 struct commit_list
*temp
= list
;
83 temp
->item
->object
.flags
&= ~mark
;
89 static int ref_newer(const unsigned char *new_sha1
,
90 const unsigned char *old_sha1
)
93 struct commit
*old
, *new;
94 struct commit_list
*list
, *used
;
97 /* Both new and old must be commit-ish and new is descendant of
98 * old. Otherwise we require --force.
100 o
= deref_tag(parse_object(old_sha1
), NULL
, 0);
101 if (!o
|| o
->type
!= OBJ_COMMIT
)
103 old
= (struct commit
*) o
;
105 o
= deref_tag(parse_object(new_sha1
), NULL
, 0);
106 if (!o
|| o
->type
!= OBJ_COMMIT
)
108 new = (struct commit
*) o
;
110 if (parse_commit(new) < 0)
114 commit_list_insert(new, &list
);
116 new = pop_most_recent_commit(&list
, 1);
117 commit_list_insert(new, &used
);
123 unmark_and_free(list
, 1);
124 unmark_and_free(used
, 1);
128 static struct ref
*local_refs
, **local_tail
;
129 static struct ref
*remote_refs
, **remote_tail
;
131 static int one_local_ref(const char *refname
, const unsigned char *sha1
, int flag
, void *cb_data
)
134 int len
= strlen(refname
) + 1;
135 ref
= xcalloc(1, sizeof(*ref
) + len
);
136 hashcpy(ref
->new_sha1
, sha1
);
137 memcpy(ref
->name
, refname
, len
);
139 local_tail
= &ref
->next
;
143 static void get_local_heads(void)
145 local_tail
= &local_refs
;
146 for_each_ref(one_local_ref
, NULL
);
149 static int receive_status(int in
)
153 int len
= packet_read_line(in
, line
, sizeof(line
));
154 if (len
< 10 || memcmp(line
, "unpack ", 7)) {
155 fprintf(stderr
, "did not receive status back\n");
158 if (memcmp(line
, "unpack ok\n", 10)) {
163 len
= packet_read_line(in
, line
, sizeof(line
));
167 (memcmp(line
, "ok", 2) && memcmp(line
, "ng", 2))) {
168 fprintf(stderr
, "protocol error: %s\n", line
);
172 if (!memcmp(line
, "ok", 2))
180 static void update_tracking_ref(struct remote
*remote
, struct ref
*ref
)
184 if (ref
->status
!= REF_STATUS_OK
)
190 if (!remote_find_tracking(remote
, &rs
)) {
192 fprintf(stderr
, "updating local tracking ref '%s'\n", rs
.dst
);
194 if (delete_ref(rs
.dst
, NULL
))
195 error("Failed to delete");
197 update_ref("update by push", rs
.dst
,
198 ref
->new_sha1
, NULL
, 0, 0);
203 static const char *prettify_ref(const struct ref
*ref
)
205 const char *name
= ref
->name
;
207 !prefixcmp(name
, "refs/heads/") ? 11 :
208 !prefixcmp(name
, "refs/tags/") ? 10 :
209 !prefixcmp(name
, "refs/remotes/") ? 13 :
213 #define SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3)
215 static void print_ref_status(char flag
, const char *summary
, struct ref
*to
, struct ref
*from
, const char *msg
)
217 fprintf(stderr
, " %c %-*s ", flag
, SUMMARY_WIDTH
, summary
);
219 fprintf(stderr
, "%s -> %s", prettify_ref(from
), prettify_ref(to
));
221 fputs(prettify_ref(to
), stderr
);
230 static const char *status_abbrev(unsigned char sha1
[20])
233 abbrev
= find_unique_abbrev(sha1
, DEFAULT_ABBREV
);
234 return abbrev
? abbrev
: sha1_to_hex(sha1
);
237 static void print_ok_ref_status(struct ref
*ref
)
240 print_ref_status('-', "[deleted]", ref
, NULL
, NULL
);
241 else if (is_null_sha1(ref
->old_sha1
))
242 print_ref_status('*',
243 (!prefixcmp(ref
->name
, "refs/tags/") ? "[new tag]" :
245 ref
, ref
->peer_ref
, NULL
);
251 strcpy(quickref
, status_abbrev(ref
->old_sha1
));
252 if (ref
->nonfastforward
) {
253 strcat(quickref
, "...");
255 msg
= "forced update";
257 strcat(quickref
, "..");
261 strcat(quickref
, status_abbrev(ref
->new_sha1
));
263 print_ref_status(type
, quickref
, ref
, ref
->peer_ref
, msg
);
267 static void print_push_status(const char *dest
, struct ref
*refs
)
272 for (ref
= refs
; ref
; ref
= ref
->next
) {
275 if (ref
->status
== REF_STATUS_UPTODATE
&& !args
.verbose
)
279 fprintf(stderr
, "To %s\n", dest
);
283 switch(ref
->status
) {
284 case REF_STATUS_NONE
:
285 print_ref_status('X', "[no match]", ref
, NULL
, NULL
);
287 case REF_STATUS_REJECT_NODELETE
:
288 print_ref_status('!', "[rejected]", ref
, NULL
,
289 "remote does not support deleting refs");
291 case REF_STATUS_UPTODATE
:
292 print_ref_status('=', "[up to date]", ref
,
293 ref
->peer_ref
, NULL
);
295 case REF_STATUS_REJECT_NONFASTFORWARD
:
296 print_ref_status('!', "[rejected]", ref
, ref
->peer_ref
,
300 print_ok_ref_status(ref
);
306 static int do_send_pack(int in
, int out
, struct remote
*remote
, const char *dest
, int nr_refspec
, const char **refspec
)
310 int ask_for_status_report
= 0;
311 int allow_deleting_refs
= 0;
312 int expect_status_report
= 0;
313 int flags
= MATCH_REFS_NONE
;
316 flags
|= MATCH_REFS_ALL
;
317 if (args
.send_mirror
)
318 flags
|= MATCH_REFS_MIRROR
;
320 /* No funny business with the matcher */
321 remote_tail
= get_remote_heads(in
, &remote_refs
, 0, NULL
, REF_NORMAL
);
324 /* Does the other end support the reporting? */
325 if (server_supports("report-status"))
326 ask_for_status_report
= 1;
327 if (server_supports("delete-refs"))
328 allow_deleting_refs
= 1;
332 remote_tail
= &remote_refs
;
333 if (match_refs(local_refs
, remote_refs
, &remote_tail
,
334 nr_refspec
, refspec
, flags
))
338 fprintf(stderr
, "No refs in common and none specified; doing nothing.\n"
339 "Perhaps you should specify a branch such as 'master'.\n");
344 * Finally, tell the other end!
347 for (ref
= remote_refs
; ref
; ref
= ref
->next
) {
348 const unsigned char *new_sha1
;
350 if (!ref
->peer_ref
) {
351 if (!args
.send_mirror
)
353 new_sha1
= null_sha1
;
356 new_sha1
= ref
->peer_ref
->new_sha1
;
359 ref
->deletion
= is_null_sha1(new_sha1
);
360 if (ref
->deletion
&& !allow_deleting_refs
) {
361 ref
->status
= REF_STATUS_REJECT_NODELETE
;
364 if (!ref
->deletion
&&
365 !hashcmp(ref
->old_sha1
, new_sha1
)) {
366 ref
->status
= REF_STATUS_UPTODATE
;
370 /* This part determines what can overwrite what.
373 * (0) you can always use --force or +A:B notation to
374 * selectively force individual ref pairs.
376 * (1) if the old thing does not exist, it is OK.
378 * (2) if you do not have the old thing, you are not allowed
379 * to overwrite it; you would not know what you are losing
382 * (3) if both new and old are commit-ish, and new is a
383 * descendant of old, it is OK.
385 * (4) regardless of all of the above, removing :B is
389 ref
->nonfastforward
=
391 !is_null_sha1(ref
->old_sha1
) &&
392 (!has_sha1_file(ref
->old_sha1
)
393 || !ref_newer(new_sha1
, ref
->old_sha1
));
395 if (ref
->nonfastforward
&& !ref
->force
&& !args
.force_update
) {
396 ref
->status
= REF_STATUS_REJECT_NONFASTFORWARD
;
400 hashcpy(ref
->new_sha1
, new_sha1
);
403 ref
->status
= REF_STATUS_OK
;
406 char *old_hex
= sha1_to_hex(ref
->old_sha1
);
407 char *new_hex
= sha1_to_hex(ref
->new_sha1
);
409 if (ask_for_status_report
) {
410 packet_write(out
, "%s %s %s%c%s",
411 old_hex
, new_hex
, ref
->name
, 0,
413 ask_for_status_report
= 0;
414 expect_status_report
= 1;
417 packet_write(out
, "%s %s %s",
418 old_hex
, new_hex
, ref
->name
);
423 if (new_refs
&& !args
.dry_run
) {
424 if (pack_objects(out
, remote_refs
) < 0) {
431 print_push_status(dest
, remote_refs
);
433 if (expect_status_report
) {
434 if (receive_status(in
))
438 if (!args
.dry_run
&& remote
) {
439 for (ref
= remote_refs
; ref
; ref
= ref
->next
)
440 update_tracking_ref(remote
, ref
);
444 fprintf(stderr
, "Everything up-to-date\n");
445 for (ref
= remote_refs
; ref
; ref
= ref
->next
) {
446 switch (ref
->status
) {
447 case REF_STATUS_NONE
:
448 case REF_STATUS_UPTODATE
:
458 static void verify_remote_names(int nr_heads
, const char **heads
)
462 for (i
= 0; i
< nr_heads
; i
++) {
463 const char *remote
= strchr(heads
[i
], ':');
465 remote
= remote
? (remote
+ 1) : heads
[i
];
466 switch (check_ref_format(remote
)) {
468 case -2: /* ok but a single level -- that is fine for
471 case -3: /* ok but ends with a pattern-match character */
474 die("remote part of refspec is not a valid name in %s",
479 int cmd_send_pack(int argc
, const char **argv
, const char *prefix
)
482 const char **heads
= NULL
;
483 const char *remote_name
= NULL
;
484 struct remote
*remote
= NULL
;
485 const char *dest
= NULL
;
488 for (i
= 1; i
< argc
; i
++, argv
++) {
489 const char *arg
= *argv
;
492 if (!prefixcmp(arg
, "--receive-pack=")) {
493 args
.receivepack
= arg
+ 15;
496 if (!prefixcmp(arg
, "--exec=")) {
497 args
.receivepack
= arg
+ 7;
500 if (!prefixcmp(arg
, "--remote=")) {
501 remote_name
= arg
+ 9;
504 if (!strcmp(arg
, "--all")) {
508 if (!strcmp(arg
, "--dry-run")) {
512 if (!strcmp(arg
, "--mirror")) {
513 args
.send_mirror
= 1;
516 if (!strcmp(arg
, "--force")) {
517 args
.force_update
= 1;
520 if (!strcmp(arg
, "--verbose")) {
524 if (!strcmp(arg
, "--thin")) {
525 args
.use_thin_pack
= 1;
528 usage(send_pack_usage
);
534 heads
= (const char **) argv
;
539 usage(send_pack_usage
);
541 * --all and --mirror are incompatible; neither makes sense
544 if ((heads
&& (args
.send_all
|| args
.send_mirror
)) ||
545 (args
.send_all
&& args
.send_mirror
))
546 usage(send_pack_usage
);
549 remote
= remote_get(remote_name
);
550 if (!remote_has_url(remote
, dest
)) {
551 die("Destination %s is not a uri for %s",
556 return send_pack(&args
, dest
, remote
, nr_heads
, heads
);
559 int send_pack(struct send_pack_args
*my_args
,
560 const char *dest
, struct remote
*remote
,
561 int nr_heads
, const char **heads
)
564 struct child_process
*conn
;
566 memcpy(&args
, my_args
, sizeof(args
));
568 verify_remote_names(nr_heads
, heads
);
570 conn
= git_connect(fd
, dest
, args
.receivepack
, args
.verbose
? CONNECT_VERBOSE
: 0);
571 ret
= do_send_pack(fd
[0], fd
[1], remote
, dest
, nr_heads
, heads
);
574 ret
|= finish_connect(conn
);