[thirdparty/git.git] / send-pack.c

#include "cache.h"
#include "commit.h"
#include "tag.h"
#include "refs.h"
#include "pkt-line.h"
#include "exec_cmd.h"

static const char send_pack_usage[] =
"git-send-pack [--all] [--exec=git-receive-pack] <remote> [<head>...]\n"
"  --all and explicit <head> specification are mutually exclusive.";
static const char *exec = "git-receive-pack";
static int verbose;
static int send_all;
static int force_update;
static int use_thin_pack;

/*
 * Make a pack stream and spit it out into file descriptor fd
 */
static int pack_objects(int fd, struct ref *refs)
{
	int pipe_fd[2];
	pid_t pid;

	if (pipe(pipe_fd) < 0)
		return error("send-pack: pipe failed");
	pid = fork();
	if (!pid) {
		/*
		 * The child becomes pack-objects --revs; we feed
		 * the revision parameters to it via its stdin and
		 * let its stdout go back to the other end.
		 */
		static const char *args[] = {
			"pack-objects",
			"--all-progress",
			"--revs",
			"--stdout",
			NULL,
			NULL,
		};
		if (use_thin_pack)
			args[4] = "--thin";
		dup2(pipe_fd[0], 0);
		dup2(fd, 1);
		close(pipe_fd[0]);
		close(pipe_fd[1]);
		close(fd);
		execv_git_cmd(args);
		die("git-pack-objects exec failed (%s)", strerror(errno));
	}

	/*
	 * We feed the pack-objects we just spawned with revision
	 * parameters by writing to the pipe.
	 */
	close(pipe_fd[0]);
	close(fd);

	while (refs) {
		char buf[42];

		if (!is_null_sha1(refs->old_sha1) &&
		    has_sha1_file(refs->old_sha1)) {
			memcpy(buf + 1, sha1_to_hex(refs->old_sha1), 40);
			buf[0] = '^';
			buf[41] = '\n';
			if (!write_or_whine(pipe_fd[1], buf, 42,
						"send-pack: send refs"))
				break;
		}
		if (!is_null_sha1(refs->new_sha1)) {
			memcpy(buf, sha1_to_hex(refs->new_sha1), 40);
			buf[40] = '\n';
			if (!write_or_whine(pipe_fd[1], buf, 41,
						"send-pack: send refs"))
				break;
		}
		refs = refs->next;
	}
	close(pipe_fd[1]);

	for (;;) {
		int status, code;
		pid_t waiting = waitpid(pid, &status, 0);

		if (waiting < 0) {
			if (errno == EINTR)
				continue;
			return error("waitpid failed (%s)", strerror(errno));
		}
		if ((waiting != pid) || WIFSIGNALED(status) ||
		    !WIFEXITED(status))
			return error("pack-objects died with strange error");
		code = WEXITSTATUS(status);
		if (code)
			return -code;
		return 0;
	}
}

static void unmark_and_free(struct commit_list *list, unsigned int mark)
{
	while (list) {
		struct commit_list *temp = list;
		temp->item->object.flags &= ~mark;
		list = temp->next;
		free(temp);
	}
}

static int ref_newer(const unsigned char *new_sha1,
		     const unsigned char *old_sha1)
{
	struct object *o;
	struct commit *old, *new;
	struct commit_list *list, *used;
	int found = 0;

	/* Both new and old must be commit-ish and new is descendant of
	 * old.  Otherwise we require --force.
	 */
	o = deref_tag(parse_object(old_sha1), NULL, 0);
	if (!o || o->type != OBJ_COMMIT)
		return 0;
	old = (struct commit *) o;

	o = deref_tag(parse_object(new_sha1), NULL, 0);
	if (!o || o->type != OBJ_COMMIT)
		return 0;
	new = (struct commit *) o;

	if (parse_commit(new) < 0)
		return 0;

	used = list = NULL;
	commit_list_insert(new, &list);
	while (list) {
		new = pop_most_recent_commit(&list, 1);
		commit_list_insert(new, &used);
		if (new == old) {
			found = 1;
			break;
		}
	}
	unmark_and_free(list, 1);
	unmark_and_free(used, 1);
	return found;
}

static struct ref *local_refs, **local_tail;
static struct ref *remote_refs, **remote_tail;

static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
{
	struct ref *ref;
	int len = strlen(refname) + 1;
	ref = xcalloc(1, sizeof(*ref) + len);
	hashcpy(ref->new_sha1, sha1);
	memcpy(ref->name, refname, len);
	*local_tail = ref;
	local_tail = &ref->next;
	return 0;
}

static void get_local_heads(void)
{
	local_tail = &local_refs;
	for_each_ref(one_local_ref, NULL);
}

static int receive_status(int in)
{
	char line[1000];
	int ret = 0;
	int len = packet_read_line(in, line, sizeof(line));
	if (len < 10 || memcmp(line, "unpack ", 7)) {
		fprintf(stderr, "did not receive status back\n");
		return -1;
	}
	if (memcmp(line, "unpack ok\n", 10)) {
		fputs(line, stderr);
		ret = -1;
	}
	while (1) {
		len = packet_read_line(in, line, sizeof(line));
		if (!len)
			break;
		if (len < 3 ||
		    (memcmp(line, "ok", 2) && memcmp(line, "ng", 2))) {
			fprintf(stderr, "protocol error: %s\n", line);
			ret = -1;
			break;
		}
		if (!memcmp(line, "ok", 2))
			continue;
		fputs(line, stderr);
		ret = -1;
	}
	return ret;
}

static int send_pack(int in, int out, int nr_refspec, char **refspec)
{
	struct ref *ref;
	int new_refs;
	int ret = 0;
	int ask_for_status_report = 0;
	int allow_deleting_refs = 0;
	int expect_status_report = 0;

	/* No funny business with the matcher */
	remote_tail = get_remote_heads(in, &remote_refs, 0, NULL, REF_NORMAL);
	get_local_heads();

	/* Does the other end support the reporting? */
	if (server_supports("report-status"))
		ask_for_status_report = 1;
	if (server_supports("delete-refs"))
		allow_deleting_refs = 1;

	/* match them up */
	if (!remote_tail)
		remote_tail = &remote_refs;
	if (match_refs(local_refs, remote_refs, &remote_tail,
		       nr_refspec, refspec, send_all))
		return -1;

	if (!remote_refs) {
		fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
		return 0;
	}

	/*
	 * Finally, tell the other end!
	 */
	new_refs = 0;
	for (ref = remote_refs; ref; ref = ref->next) {
		char old_hex[60], *new_hex;
		int delete_ref;

		if (!ref->peer_ref)
			continue;

		delete_ref = is_null_sha1(ref->peer_ref->new_sha1);
		if (delete_ref && !allow_deleting_refs) {
			error("remote does not support deleting refs");
			ret = -2;
			continue;
		}
		if (!delete_ref &&
		    !hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) {
			if (verbose)
				fprintf(stderr, "'%s': up-to-date\n", ref->name);
			continue;
		}

		/* This part determines what can overwrite what.
		 * The rules are:
		 *
		 * (0) you can always use --force or +A:B notation to
		 *     selectively force individual ref pairs.
		 *
		 * (1) if the old thing does not exist, it is OK.
		 *
		 * (2) if you do not have the old thing, you are not allowed
		 *     to overwrite it; you would not know what you are losing
		 *     otherwise.
		 *
		 * (3) if both new and old are commit-ish, and new is a
		 *     descendant of old, it is OK.
		 *
		 * (4) regardless of all of the above, removing :B is
		 *     always allowed.
		 */

		if (!force_update &&
		    !delete_ref &&
		    !is_null_sha1(ref->old_sha1) &&
		    !ref->force) {
			if (!has_sha1_file(ref->old_sha1) ||
			    !ref_newer(ref->peer_ref->new_sha1,
				       ref->old_sha1)) {
				/* We do not have the remote ref, or
				 * we know that the remote ref is not
				 * an ancestor of what we are trying to
				 * push.  Either way this can be losing
				 * commits at the remote end and likely
				 * we were not up to date to begin with.
				 */
				error("remote '%s' is not a strict "
				      "subset of local ref '%s'. "
				      "maybe you are not up-to-date and "
				      "need to pull first?",
				      ref->name,
				      ref->peer_ref->name);
				ret = -2;
				continue;
			}
		}
		hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
		if (!delete_ref)
			new_refs++;
		strcpy(old_hex, sha1_to_hex(ref->old_sha1));
		new_hex = sha1_to_hex(ref->new_sha1);

		if (ask_for_status_report) {
			packet_write(out, "%s %s %s%c%s",
				     old_hex, new_hex, ref->name, 0,
				     "report-status");
			ask_for_status_report = 0;
			expect_status_report = 1;
		}
		else
			packet_write(out, "%s %s %s",
				     old_hex, new_hex, ref->name);
		if (delete_ref)
			fprintf(stderr, "deleting '%s'\n", ref->name);
		else {
			fprintf(stderr, "updating '%s'", ref->name);
			if (strcmp(ref->name, ref->peer_ref->name))
				fprintf(stderr, " using '%s'",
					ref->peer_ref->name);
			fprintf(stderr, "\n  from %s\n  to   %s\n",
				old_hex, new_hex);
		}
	}

	packet_flush(out);
	if (new_refs)
		ret = pack_objects(out, remote_refs);
	close(out);

	if (expect_status_report) {
		if (receive_status(in))
			ret = -4;
	}

	if (!new_refs && ret == 0)
		fprintf(stderr, "Everything up-to-date\n");
	return ret;
}

static void verify_remote_names(int nr_heads, char **heads)
{
	int i;

	for (i = 0; i < nr_heads; i++) {
		const char *remote = strchr(heads[i], ':');

		remote = remote ? (remote + 1) : heads[i];
		switch (check_ref_format(remote)) {
		case 0: /* ok */
		case -2: /* ok but a single level -- that is fine for
			  * a match pattern.
			  */
			continue;
		}
		die("remote part of refspec is not a valid name in %s",
		    heads[i]);
	}
}

int main(int argc, char **argv)
{
	int i, nr_heads = 0;
	char *dest = NULL;
	char **heads = NULL;
	int fd[2], ret;
	pid_t pid;

	setup_git_directory();
	git_config(git_default_config);

	argv++;
	for (i = 1; i < argc; i++, argv++) {
		char *arg = *argv;

		if (*arg == '-') {
			if (!strncmp(arg, "--exec=", 7)) {
				exec = arg + 7;
				continue;
			}
			if (!strcmp(arg, "--all")) {
				send_all = 1;
				continue;
			}
			if (!strcmp(arg, "--force")) {
				force_update = 1;
				continue;
			}
			if (!strcmp(arg, "--verbose")) {
				verbose = 1;
				continue;
			}
			if (!strcmp(arg, "--thin")) {
				use_thin_pack = 1;
				continue;
			}
			usage(send_pack_usage);
		}
		if (!dest) {
			dest = arg;
			continue;
		}
		heads = argv;
		nr_heads = argc - i;
		break;
	}
	if (!dest)
		usage(send_pack_usage);
	if (heads && send_all)
		usage(send_pack_usage);
	verify_remote_names(nr_heads, heads);

	pid = git_connect(fd, dest, exec);
	if (pid < 0)
		return 1;
	ret = send_pack(fd[0], fd[1], nr_heads, heads);
	close(fd[0]);
	close(fd[1]);
	ret |= finish_connect(pid);
	return !!ret;
}
Commit	Line	Data
61221472	1	#include "cache.h"
2a9c3fe8	2	#include "commit.h"
37fde874	3	#include "tag.h"
584c6cc9	4	#include "refs.h"
f3a3214e	5	#include "pkt-line.h"
77cb17e9	6	#include "exec_cmd.h"
61221472	7
2a245013	8	static const char send_pack_usage[] =
0bc3cdfc JH	9	"git-send-pack [--all] [--exec=git-receive-pack] <remote> [<head>...]\n"
0bc3cdfc JH	10	" --all and explicit <head> specification are mutually exclusive.";
61221472	11	static const char *exec = "git-receive-pack";
96f1e58f DR	12	static int verbose;
	13	static int send_all;
	14	static int force_update;
	15	static int use_thin_pack;
61221472	16
c727fe2a	17	/*
0ae5f98c	18	* Make a pack stream and spit it out into file descriptor fd
c727fe2a	19	*/
0ae5f98c	20	static int pack_objects(int fd, struct ref *refs)
c727fe2a AW	21	{
c727fe2a AW	22	int pipe_fd[2];
0ae5f98c	23	pid_t pid;
c727fe2a AW	24
c727fe2a AW	25	if (pipe(pipe_fd) < 0)
0ae5f98c JH	26	return error("send-pack: pipe failed");
	27	pid = fork();
	28	if (!pid) {
	29	/*
	30	* The child becomes pack-objects --revs; we feed
	31	* the revision parameters to it via its stdin and
	32	* let its stdout go back to the other end.
c727fe2a	33	*/
0ae5f98c JH	34	static const char *args[] = {
	35	"pack-objects",
	36	"--all-progress",
	37	"--revs",
	38	"--stdout",
	39	NULL,
	40	NULL,
	41	};
	42	if (use_thin_pack)
	43	args[4] = "--thin";
c727fe2a AW	44	dup2(pipe_fd[0], 0);
	45	dup2(fd, 1);
	46	close(pipe_fd[0]);
	47	close(pipe_fd[1]);
	48	close(fd);
0ae5f98c JH	49	execv_git_cmd(args);
0ae5f98c JH	50	die("git-pack-objects exec failed (%s)", strerror(errno));
c727fe2a	51	}
c727fe2a	52
0ae5f98c JH	53	/*
	54	* We feed the pack-objects we just spawned with revision
	55	* parameters by writing to the pipe.
c727fe2a AW	56	*/
	57	close(pipe_fd[0]);
	58	close(fd);
0ae5f98c	59
c727fe2a AW	60	while (refs) {
	61	char buf[42];
	62
	63	if (!is_null_sha1(refs->old_sha1) &&
	64	has_sha1_file(refs->old_sha1)) {
	65	memcpy(buf + 1, sha1_to_hex(refs->old_sha1), 40);
	66	buf[0] = '^';
	67	buf[41] = '\n';
e0814056	68	if (!write_or_whine(pipe_fd[1], buf, 42,
825cee7b AW	69	"send-pack: send refs"))
825cee7b AW	70	break;
c727fe2a AW	71	}
	72	if (!is_null_sha1(refs->new_sha1)) {
	73	memcpy(buf, sha1_to_hex(refs->new_sha1), 40);
	74	buf[40] = '\n';
e0814056	75	if (!write_or_whine(pipe_fd[1], buf, 41,
825cee7b AW	76	"send-pack: send refs"))
825cee7b AW	77	break;
c727fe2a AW	78	}
	79	refs = refs->next;
	80	}
	81	close(pipe_fd[1]);
c727fe2a	82
0ae5f98c JH	83	for (;;) {
	84	int status, code;
	85	pid_t waiting = waitpid(pid, &status, 0);
94fdb7aa	86
0ae5f98c JH	87	if (waiting < 0) {
	88	if (errno == EINTR)
	89	continue;
	90	return error("waitpid failed (%s)", strerror(errno));
	91	}
	92	if ((waiting != pid) \|\| WIFSIGNALED(status) \|\|
	93	!WIFEXITED(status))
	94	return error("pack-objects died with strange error");
	95	code = WEXITSTATUS(status);
	96	if (code)
	97	return -code;
	98	return 0;
94fdb7aa	99	}
94fdb7aa	100	}
e4b5c7ff	101
51b0fca0 JH	102	static void unmark_and_free(struct commit_list *list, unsigned int mark)
	103	{
	104	while (list) {
	105	struct commit_list *temp = list;
	106	temp->item->object.flags &= ~mark;
	107	list = temp->next;
	108	free(temp);
	109	}
	110	}
	111
37fde874 JH	112	static int ref_newer(const unsigned char *new_sha1,
37fde874 JH	113	const unsigned char *old_sha1)
584c6cc9	114	{
37fde874 JH	115	struct object *o;
37fde874 JH	116	struct commit old, new;
51b0fca0 JH	117	struct commit_list list, used;
51b0fca0 JH	118	int found = 0;
2a9c3fe8	119
37fde874 JH	120	/* Both new and old must be commit-ish and new is descendant of
	121	* old. Otherwise we require --force.
	122	*/
9534f40b	123	o = deref_tag(parse_object(old_sha1), NULL, 0);
1974632c	124	if (!o \|\| o->type != OBJ_COMMIT)
584c6cc9	125	return 0;
37fde874 JH	126	old = (struct commit *) o;
37fde874 JH	127
9534f40b	128	o = deref_tag(parse_object(new_sha1), NULL, 0);
1974632c	129	if (!o \|\| o->type != OBJ_COMMIT)
2a9c3fe8	130	return 0;
37fde874 JH	131	new = (struct commit *) o;
37fde874 JH	132
2a9c3fe8 LT	133	if (parse_commit(new) < 0)
2a9c3fe8 LT	134	return 0;
51b0fca0 JH	135
51b0fca0 JH	136	used = list = NULL;
2a9c3fe8	137	commit_list_insert(new, &list);
bdf25142 LT	138	while (list) {
bdf25142 LT	139	new = pop_most_recent_commit(&list, 1);
51b0fca0 JH	140	commit_list_insert(new, &used);
	141	if (new == old) {
	142	found = 1;
	143	break;
	144	}
2a9c3fe8	145	}
51b0fca0 JH	146	unmark_and_free(list, 1);
	147	unmark_and_free(used, 1);
	148	return found;
584c6cc9 LT	149	}
584c6cc9 LT	150
f88395ac JH	151	static struct ref local_refs, *local_tail;
f88395ac JH	152	static struct ref remote_refs, *remote_tail;
584c6cc9	153
8da19775	154	static int one_local_ref(const char refname, const unsigned char sha1, int flag, void *cb_data)
584c6cc9 LT	155	{
584c6cc9 LT	156	struct ref *ref;
f88395ac JH	157	int len = strlen(refname) + 1;
f88395ac JH	158	ref = xcalloc(1, sizeof(*ref) + len);
e702496e	159	hashcpy(ref->new_sha1, sha1);
584c6cc9	160	memcpy(ref->name, refname, len);
f88395ac JH	161	*local_tail = ref;
f88395ac JH	162	local_tail = &ref->next;
584c6cc9 LT	163	return 0;
	164	}
	165
f88395ac JH	166	static void get_local_heads(void)
	167	{
	168	local_tail = &local_refs;
cb5d709f	169	for_each_ref(one_local_ref, NULL);
f88395ac JH	170	}
f88395ac JH	171
cfee10a7 JH	172	static int receive_status(int in)
	173	{
	174	char line[1000];
	175	int ret = 0;
	176	int len = packet_read_line(in, line, sizeof(line));
	177	if (len < 10 \|\| memcmp(line, "unpack ", 7)) {
	178	fprintf(stderr, "did not receive status back\n");
	179	return -1;
	180	}
	181	if (memcmp(line, "unpack ok\n", 10)) {
	182	fputs(line, stderr);
	183	ret = -1;
	184	}
	185	while (1) {
	186	len = packet_read_line(in, line, sizeof(line));
	187	if (!len)
	188	break;
	189	if (len < 3 \|\|
	190	(memcmp(line, "ok", 2) && memcmp(line, "ng", 2))) {
	191	fprintf(stderr, "protocol error: %s\n", line);
	192	ret = -1;
	193	break;
	194	}
	195	if (!memcmp(line, "ok", 2))
	196	continue;
	197	fputs(line, stderr);
	198	ret = -1;
	199	}
	200	return ret;
	201	}
	202
f88395ac	203	static int send_pack(int in, int out, int nr_refspec, char **refspec)
61221472	204	{
7f8e9828	205	struct ref *ref;
584c6cc9	206	int new_refs;
ed24928e	207	int ret = 0;
cfee10a7	208	int ask_for_status_report = 0;
d4f694ba	209	int allow_deleting_refs = 0;
cfee10a7	210	int expect_status_report = 0;
7f8e9828	211
f88395ac	212	/* No funny business with the matcher */
2718ff09	213	remote_tail = get_remote_heads(in, &remote_refs, 0, NULL, REF_NORMAL);
f88395ac	214	get_local_heads();
584c6cc9	215
cfee10a7 JH	216	/* Does the other end support the reporting? */
	217	if (server_supports("report-status"))
	218	ask_for_status_report = 1;
d4f694ba JH	219	if (server_supports("delete-refs"))
d4f694ba JH	220	allow_deleting_refs = 1;
cfee10a7	221
f88395ac JH	222	/* match them up */
	223	if (!remote_tail)
	224	remote_tail = &remote_refs;
	225	if (match_refs(local_refs, remote_refs, &remote_tail,
	226	nr_refspec, refspec, send_all))
	227	return -1;
4c353e89 DB	228
	229	if (!remote_refs) {
	230	fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
	231	return 0;
	232	}
	233
584c6cc9	234	/*
f88395ac	235	* Finally, tell the other end!
584c6cc9	236	*/
f88395ac JH	237	new_refs = 0;
	238	for (ref = remote_refs; ref; ref = ref->next) {
	239	char old_hex[60], *new_hex;
d4f694ba JH	240	int delete_ref;
d4f694ba JH	241
f88395ac	242	if (!ref->peer_ref)
7f8e9828	243	continue;
d4f694ba JH	244
	245	delete_ref = is_null_sha1(ref->peer_ref->new_sha1);
	246	if (delete_ref && !allow_deleting_refs) {
	247	error("remote does not support deleting refs");
	248	ret = -2;
	249	continue;
	250	}
	251	if (!delete_ref &&
	252	!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) {
41f93a2c LT	253	if (verbose)
41f93a2c LT	254	fprintf(stderr, "'%s': up-to-date\n", ref->name);
37fde874 JH	255	continue;
	256	}
	257
	258	/* This part determines what can overwrite what.
	259	* The rules are:
	260	*
ff27adf3 JH	261	* (0) you can always use --force or +A:B notation to
ff27adf3 JH	262	* selectively force individual ref pairs.
37fde874 JH	263	*
	264	* (1) if the old thing does not exist, it is OK.
	265	*
	266	* (2) if you do not have the old thing, you are not allowed
	267	* to overwrite it; you would not know what you are losing
	268	* otherwise.
	269	*
	270	* (3) if both new and old are commit-ish, and new is a
	271	* descendant of old, it is OK.
d4f694ba JH	272	*
	273	* (4) regardless of all of the above, removing :B is
	274	* always allowed.
37fde874 JH	275	*/
37fde874 JH	276
ff27adf3	277	if (!force_update &&
d4f694ba	278	!delete_ref &&
4b4ee90e	279	!is_null_sha1(ref->old_sha1) &&
ff27adf3	280	!ref->force) {
69310a34 JH	281	if (!has_sha1_file(ref->old_sha1) \|\|
69310a34 JH	282	!ref_newer(ref->peer_ref->new_sha1,
f88395ac	283	ref->old_sha1)) {
69310a34 JH	284	/* We do not have the remote ref, or
	285	* we know that the remote ref is not
	286	* an ancestor of what we are trying to
	287	* push. Either way this can be losing
	288	* commits at the remote end and likely
	289	* we were not up to date to begin with.
	290	*/
	291	error("remote '%s' is not a strict "
	292	"subset of local ref '%s'. "
	293	"maybe you are not up-to-date and "
	294	"need to pull first?",
	295	ref->name,
f88395ac	296	ref->peer_ref->name);
ed24928e	297	ret = -2;
f88395ac JH	298	continue;
f88395ac JH	299	}
e4b5c7ff	300	}
e702496e	301	hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
d4f694ba JH	302	if (!delete_ref)
d4f694ba JH	303	new_refs++;
7f8e9828 LT	304	strcpy(old_hex, sha1_to_hex(ref->old_sha1));
7f8e9828 LT	305	new_hex = sha1_to_hex(ref->new_sha1);
cfee10a7 JH	306
	307	if (ask_for_status_report) {
	308	packet_write(out, "%s %s %s%c%s",
	309	old_hex, new_hex, ref->name, 0,
	310	"report-status");
	311	ask_for_status_report = 0;
	312	expect_status_report = 1;
	313	}
	314	else
	315	packet_write(out, "%s %s %s",
	316	old_hex, new_hex, ref->name);
d4f694ba JH	317	if (delete_ref)
	318	fprintf(stderr, "deleting '%s'\n", ref->name);
	319	else {
	320	fprintf(stderr, "updating '%s'", ref->name);
	321	if (strcmp(ref->name, ref->peer_ref->name))
	322	fprintf(stderr, " using '%s'",
	323	ref->peer_ref->name);
	324	fprintf(stderr, "\n from %s\n to %s\n",
	325	old_hex, new_hex);
	326	}
61221472	327	}
f88395ac	328
f3a3214e	329	packet_flush(out);
584c6cc9	330	if (new_refs)
0ae5f98c	331	ret = pack_objects(out, remote_refs);
61221472	332	close(out);
cfee10a7 JH	333
	334	if (expect_status_report) {
	335	if (receive_status(in))
	336	ret = -4;
	337	}
	338
	339	if (!new_refs && ret == 0)
	340	fprintf(stderr, "Everything up-to-date\n");
ed24928e	341	return ret;
61221472 LT	342	}
61221472 LT	343
37adac76 JH	344	static void verify_remote_names(int nr_heads, char **heads)
	345	{
	346	int i;
	347
	348	for (i = 0; i < nr_heads; i++) {
	349	const char *remote = strchr(heads[i], ':');
	350
	351	remote = remote ? (remote + 1) : heads[i];
	352	switch (check_ref_format(remote)) {
	353	case 0: /* ok */
	354	case -2: /* ok but a single level -- that is fine for
	355	* a match pattern.
	356	*/
	357	continue;
	358	}
	359	die("remote part of refspec is not a valid name in %s",
	360	heads[i]);
	361	}
	362	}
f88395ac	363
61221472 LT	364	int main(int argc, char **argv)
	365	{
	366	int i, nr_heads = 0;
	367	char *dest = NULL;
	368	char **heads = NULL;
7f8e9828 LT	369	int fd[2], ret;
7f8e9828 LT	370	pid_t pid;
61221472	371
5a327713	372	setup_git_directory();
84a9b58c JH	373	git_config(git_default_config);
84a9b58c JH	374
61221472	375	argv++;
d089391c LT	376	for (i = 1; i < argc; i++, argv++) {
d089391c LT	377	char arg = argv;
61221472 LT	378
	379	if (*arg == '-') {
	380	if (!strncmp(arg, "--exec=", 7)) {
	381	exec = arg + 7;
	382	continue;
	383	}
d089391c LT	384	if (!strcmp(arg, "--all")) {
	385	send_all = 1;
	386	continue;
	387	}
2a9c3fe8 LT	388	if (!strcmp(arg, "--force")) {
	389	force_update = 1;
	390	continue;
	391	}
41f93a2c LT	392	if (!strcmp(arg, "--verbose")) {
	393	verbose = 1;
	394	continue;
	395	}
2245be3e JH	396	if (!strcmp(arg, "--thin")) {
	397	use_thin_pack = 1;
	398	continue;
	399	}
61221472 LT	400	usage(send_pack_usage);
61221472 LT	401	}
d089391c LT	402	if (!dest) {
	403	dest = arg;
	404	continue;
	405	}
61221472	406	heads = argv;
d089391c	407	nr_heads = argc - i;
61221472 LT	408	break;
	409	}
	410	if (!dest)
	411	usage(send_pack_usage);
0bc3cdfc JH	412	if (heads && send_all)
0bc3cdfc JH	413	usage(send_pack_usage);
37adac76 JH	414	verify_remote_names(nr_heads, heads);
37adac76 JH	415
f7192598	416	pid = git_connect(fd, dest, exec);
7f8e9828	417	if (pid < 0)
61221472	418	return 1;
d0efc8a7	419	ret = send_pack(fd[0], fd[1], nr_heads, heads);
7f8e9828 LT	420	close(fd[0]);
7f8e9828 LT	421	close(fd[1]);
8a5dbef8 FBH	422	ret \|= finish_connect(pid);
8a5dbef8 FBH	423	return !!ret;
61221472	424	}