[thirdparty/git.git] / builtin-push.c

/*
 * "git push"
 */
#include "cache.h"
#include "refs.h"
#include "run-command.h"
#include "builtin.h"

#define MAX_URI (16)

static const char push_usage[] = "git-push [--all] [--tags] [-f | --force] <repository> [<refspec>...]";

static int all, tags, force, thin = 1;
static const char *execute;

#define BUF_SIZE (2084)
static char buffer[BUF_SIZE];

static const char **refspec;
static int refspec_nr;

static void add_refspec(const char *ref)
{
	int nr = refspec_nr + 1;
	refspec = xrealloc(refspec, nr * sizeof(char *));
	refspec[nr-1] = ref;
	refspec_nr = nr;
}

static int expand_one_ref(const char *ref, const unsigned char *sha1)
{
	/* Ignore the "refs/" at the beginning of the refname */
	ref += 5;

	if (!strncmp(ref, "tags/", 5))
		add_refspec(strdup(ref));
	return 0;
}

static void expand_refspecs(void)
{
	if (all) {
		if (refspec_nr)
			die("cannot mix '--all' and a refspec");

		/*
		 * No need to expand "--all" - we'll just use
		 * the "--all" flag to send-pack
		 */
		return;
	}
	if (!tags)
		return;
	for_each_ref(expand_one_ref);
}

static void set_refspecs(const char **refs, int nr)
{
	if (nr) {
		size_t bytes = nr * sizeof(char *);

		refspec = xrealloc(refspec, bytes);
		memcpy(refspec, refs, bytes);
		refspec_nr = nr;
	}
	expand_refspecs();
}

static int get_remotes_uri(const char *repo, const char *uri[MAX_URI])
{
	int n = 0;
	FILE *f = fopen(git_path("remotes/%s", repo), "r");
	int has_explicit_refspec = refspec_nr || all || tags;

	if (!f)
		return -1;
	while (fgets(buffer, BUF_SIZE, f)) {
		int is_refspec;
		char *s, *p;

		if (!strncmp("URL: ", buffer, 5)) {
			is_refspec = 0;
			s = buffer + 5;
		} else if (!strncmp("Push: ", buffer, 6)) {
			is_refspec = 1;
			s = buffer + 6;
		} else
			continue;

		/* Remove whitespace at the head.. */
		while (isspace(*s))
			s++;
		if (!*s)
			continue;

		/* ..and at the end */
		p = s + strlen(s);
		while (isspace(p[-1]))
			*--p = 0;

		if (!is_refspec) {
			if (n < MAX_URI)
				uri[n++] = strdup(s);
			else
				error("more than %d URL's specified, ignoring the rest", MAX_URI);
		}
		else if (is_refspec && !has_explicit_refspec)
			add_refspec(strdup(s));
	}
	fclose(f);
	if (!n)
		die("remote '%s' has no URL", repo);
	return n;
}

static const char **config_uri;
static const char *config_repo;
static int config_repo_len;
static int config_current_uri;
static int config_get_refspecs;

static int get_remote_config(const char* key, const char* value)
{
	if (!strncmp(key, "remote.", 7) &&
	    !strncmp(key + 7, config_repo, config_repo_len)) {
		if (!strcmp(key + 7 + config_repo_len, ".url")) {
			if (config_current_uri < MAX_URI)
				config_uri[config_current_uri++] = strdup(value);
			else
				error("more than %d URL's specified, ignoring the rest", MAX_URI);
		}
		else if (config_get_refspecs &&
			 !strcmp(key + 7 + config_repo_len, ".push"))
			add_refspec(strdup(value));
	}
	return 0;
}

static int get_config_remotes_uri(const char *repo, const char *uri[MAX_URI])
{
	config_repo_len = strlen(repo);
	config_repo = repo;
	config_current_uri = 0;
	config_uri = uri;
	config_get_refspecs = !(refspec_nr || all || tags);

	git_config(get_remote_config);
	return config_current_uri;
}

static int get_branches_uri(const char *repo, const char *uri[MAX_URI])
{
	const char *slash = strchr(repo, '/');
	int n = slash ? slash - repo : 1000;
	FILE *f = fopen(git_path("branches/%.*s", n, repo), "r");
	char *s, *p;
	int len;

	if (!f)
		return 0;
	s = fgets(buffer, BUF_SIZE, f);
	fclose(f);
	if (!s)
		return 0;
	while (isspace(*s))
		s++;
	if (!*s)
		return 0;
	p = s + strlen(s);
	while (isspace(p[-1]))
		*--p = 0;
	len = p - s;
	if (slash)
		len += strlen(slash);
	p = xmalloc(len + 1);
	strcpy(p, s);
	if (slash)
		strcat(p, slash);
	uri[0] = p;
	return 1;
}

/*
 * Read remotes and branches file, fill the push target URI
 * list.  If there is no command line refspecs, read Push: lines
 * to set up the *refspec list as well.
 * return the number of push target URIs
 */
static int read_config(const char *repo, const char *uri[MAX_URI])
{
	int n;

	if (*repo != '/') {
		n = get_remotes_uri(repo, uri);
		if (n > 0)
			return n;

		n = get_config_remotes_uri(repo, uri);
		if (n > 0)
			return n;

		n = get_branches_uri(repo, uri);
		if (n > 0)
			return n;
	}

	uri[0] = repo;
	return 1;
}

static int do_push(const char *repo)
{
	const char *uri[MAX_URI];
	int i, n;
	int common_argc;
	const char **argv;
	int argc;

	n = read_config(repo, uri);
	if (n <= 0)
		die("bad repository '%s'", repo);

	argv = xmalloc((refspec_nr + 10) * sizeof(char *));
	argv[0] = "dummy-send-pack";
	argc = 1;
	if (all)
		argv[argc++] = "--all";
	if (force)
		argv[argc++] = "--force";
	if (execute)
		argv[argc++] = execute;
	common_argc = argc;

	for (i = 0; i < n; i++) {
		int error;
		int dest_argc = common_argc;
		int dest_refspec_nr = refspec_nr;
		const char **dest_refspec = refspec;
		const char *dest = uri[i];
		const char *sender = "git-send-pack";
		if (!strncmp(dest, "http://", 7) ||
		    !strncmp(dest, "https://", 8))
			sender = "git-http-push";
		else if (thin)
			argv[dest_argc++] = "--thin";
		argv[0] = sender;
		argv[dest_argc++] = dest;
		while (dest_refspec_nr--)
			argv[dest_argc++] = *dest_refspec++;
		argv[dest_argc] = NULL;
		error = run_command_v(argc, argv);
		if (!error)
			continue;
		switch (error) {
		case -ERR_RUN_COMMAND_FORK:
			die("unable to fork for %s", sender);
		case -ERR_RUN_COMMAND_EXEC:
			die("unable to exec %s", sender);
		case -ERR_RUN_COMMAND_WAITPID:
		case -ERR_RUN_COMMAND_WAITPID_WRONG_PID:
		case -ERR_RUN_COMMAND_WAITPID_SIGNAL:
		case -ERR_RUN_COMMAND_WAITPID_NOEXIT:
			die("%s died with strange error", sender);
		default:
			return -error;
		}
	}
	return 0;
}

int cmd_push(int argc, const char **argv, const char *prefix)
{
	int i;
	const char *repo = "origin";	/* default repository */

	for (i = 1; i < argc; i++) {
		const char *arg = argv[i];

		if (arg[0] != '-') {
			repo = arg;
			i++;
			break;
		}
		if (!strcmp(arg, "--all")) {
			all = 1;
			continue;
		}
		if (!strcmp(arg, "--tags")) {
			tags = 1;
			continue;
		}
		if (!strcmp(arg, "--force") || !strcmp(arg, "-f")) {
			force = 1;
			continue;
		}
		if (!strcmp(arg, "--thin")) {
			thin = 1;
			continue;
		}
		if (!strcmp(arg, "--no-thin")) {
			thin = 0;
			continue;
		}
		if (!strncmp(arg, "--exec=", 7)) {
			execute = arg;
			continue;
		}
		usage(push_usage);
	}
	set_refspecs(argv + i, argc - i);
	return do_push(repo);
}
Commit	Line	Data
755225de LT	1	/*
	2	* "git push"
	3	*/
	4	#include "cache.h"
	5	#include "refs.h"
	6	#include "run-command.h"
	7	#include "builtin.h"
	8
	9	#define MAX_URI (16)
	10
15e593e4	11	static const char push_usage[] = "git-push [--all] [--tags] [-f \| --force] <repository> [<refspec>...]";
755225de	12
96f1e58f DR	13	static int all, tags, force, thin = 1;
96f1e58f DR	14	static const char *execute;
755225de LT	15
	16	#define BUF_SIZE (2084)
	17	static char buffer[BUF_SIZE];
	18
96f1e58f DR	19	static const char **refspec;
96f1e58f DR	20	static int refspec_nr;
755225de LT	21
	22	static void add_refspec(const char *ref)
	23	{
	24	int nr = refspec_nr + 1;
	25	refspec = xrealloc(refspec, nr * sizeof(char *));
	26	refspec[nr-1] = ref;
	27	refspec_nr = nr;
	28	}
	29
	30	static int expand_one_ref(const char ref, const unsigned char sha1)
	31	{
	32	/* Ignore the "refs/" at the beginning of the refname */
	33	ref += 5;
	34
9e0ec82c DR	35	if (!strncmp(ref, "tags/", 5))
9e0ec82c DR	36	add_refspec(strdup(ref));
755225de LT	37	return 0;
	38	}
	39
	40	static void expand_refspecs(void)
	41	{
	42	if (all) {
	43	if (refspec_nr)
	44	die("cannot mix '--all' and a refspec");
	45
	46	/*
	47	* No need to expand "--all" - we'll just use
	48	* the "--all" flag to send-pack
	49	*/
	50	return;
	51	}
	52	if (!tags)
	53	return;
	54	for_each_ref(expand_one_ref);
	55	}
	56
	57	static void set_refspecs(const char **refs, int nr)
	58	{
	59	if (nr) {
	60	size_t bytes = nr * sizeof(char *);
	61
	62	refspec = xrealloc(refspec, bytes);
	63	memcpy(refspec, refs, bytes);
	64	refspec_nr = nr;
	65	}
	66	expand_refspecs();
	67	}
	68
	69	static int get_remotes_uri(const char repo, const char uri[MAX_URI])
	70	{
	71	int n = 0;
	72	FILE *f = fopen(git_path("remotes/%s", repo), "r");
5edbcd8d	73	int has_explicit_refspec = refspec_nr \|\| all \|\| tags;
755225de LT	74
	75	if (!f)
	76	return -1;
	77	while (fgets(buffer, BUF_SIZE, f)) {
5c477b97	78	int is_refspec;
755225de LT	79	char s, p;
755225de LT	80
5c477b97 JS	81	if (!strncmp("URL: ", buffer, 5)) {
	82	is_refspec = 0;
	83	s = buffer + 5;
	84	} else if (!strncmp("Push: ", buffer, 6)) {
	85	is_refspec = 1;
	86	s = buffer + 6;
	87	} else
755225de	88	continue;
755225de LT	89
	90	/* Remove whitespace at the head.. */
	91	while (isspace(*s))
	92	s++;
	93	if (!*s)
	94	continue;
	95
	96	/* ..and at the end */
	97	p = s + strlen(s);
	98	while (isspace(p[-1]))
	99	*--p = 0;
	100
7aaf83da JH	101	if (!is_refspec) {
	102	if (n < MAX_URI)
	103	uri[n++] = strdup(s);
	104	else
82e5a82f	105	error("more than %d URL's specified, ignoring the rest", MAX_URI);
7aaf83da JH	106	}
	107	else if (is_refspec && !has_explicit_refspec)
	108	add_refspec(strdup(s));
755225de LT	109	}
	110	fclose(f);
	111	if (!n)
	112	die("remote '%s' has no URL", repo);
	113	return n;
	114	}
	115
97d4df0b JS	116	static const char **config_uri;
	117	static const char *config_repo;
	118	static int config_repo_len;
	119	static int config_current_uri;
	120	static int config_get_refspecs;
	121
	122	static int get_remote_config(const char* key, const char* value)
	123	{
	124	if (!strncmp(key, "remote.", 7) &&
	125	!strncmp(key + 7, config_repo, config_repo_len)) {
	126	if (!strcmp(key + 7 + config_repo_len, ".url")) {
	127	if (config_current_uri < MAX_URI)
	128	config_uri[config_current_uri++] = strdup(value);
	129	else
	130	error("more than %d URL's specified, ignoring the rest", MAX_URI);
	131	}
	132	else if (config_get_refspecs &&
	133	!strcmp(key + 7 + config_repo_len, ".push"))
	134	add_refspec(strdup(value));
	135	}
	136	return 0;
	137	}
	138
	139	static int get_config_remotes_uri(const char repo, const char uri[MAX_URI])
	140	{
	141	config_repo_len = strlen(repo);
	142	config_repo = repo;
	143	config_current_uri = 0;
	144	config_uri = uri;
5edbcd8d	145	config_get_refspecs = !(refspec_nr \|\| all \|\| tags);
97d4df0b JS	146
	147	git_config(get_remote_config);
	148	return config_current_uri;
	149	}
	150
755225de LT	151	static int get_branches_uri(const char repo, const char uri[MAX_URI])
	152	{
	153	const char *slash = strchr(repo, '/');
	154	int n = slash ? slash - repo : 1000;
	155	FILE f = fopen(git_path("branches/%.s", n, repo), "r");
	156	char s, p;
	157	int len;
	158
	159	if (!f)
	160	return 0;
	161	s = fgets(buffer, BUF_SIZE, f);
	162	fclose(f);
	163	if (!s)
	164	return 0;
	165	while (isspace(*s))
	166	s++;
	167	if (!*s)
	168	return 0;
	169	p = s + strlen(s);
	170	while (isspace(p[-1]))
	171	*--p = 0;
	172	len = p - s;
	173	if (slash)
	174	len += strlen(slash);
	175	p = xmalloc(len + 1);
	176	strcpy(p, s);
	177	if (slash)
	178	strcat(p, slash);
	179	uri[0] = p;
	180	return 1;
	181	}
	182
7aaf83da JH	183	/*
	184	* Read remotes and branches file, fill the push target URI
	185	* list. If there is no command line refspecs, read Push: lines
	186	* to set up the *refspec list as well.
	187	* return the number of push target URIs
	188	*/
	189	static int read_config(const char repo, const char uri[MAX_URI])
755225de LT	190	{
	191	int n;
	192
	193	if (*repo != '/') {
	194	n = get_remotes_uri(repo, uri);
	195	if (n > 0)
	196	return n;
	197
97d4df0b JS	198	n = get_config_remotes_uri(repo, uri);
	199	if (n > 0)
	200	return n;
	201
755225de LT	202	n = get_branches_uri(repo, uri);
	203	if (n > 0)
	204	return n;
	205	}
	206
	207	uri[0] = repo;
	208	return 1;
	209	}
	210
	211	static int do_push(const char *repo)
	212	{
	213	const char *uri[MAX_URI];
7aaf83da	214	int i, n;
441c823e	215	int common_argc;
755225de LT	216	const char **argv;
	217	int argc;
	218
7aaf83da	219	n = read_config(repo, uri);
755225de LT	220	if (n <= 0)
	221	die("bad repository '%s'", repo);
	222
	223	argv = xmalloc((refspec_nr + 10) * sizeof(char *));
	224	argv[0] = "dummy-send-pack";
	225	argc = 1;
	226	if (all)
	227	argv[argc++] = "--all";
	228	if (force)
	229	argv[argc++] = "--force";
	230	if (execute)
	231	argv[argc++] = execute;
441c823e	232	common_argc = argc;
755225de LT	233
	234	for (i = 0; i < n; i++) {
	235	int error;
441c823e NH	236	int dest_argc = common_argc;
	237	int dest_refspec_nr = refspec_nr;
	238	const char **dest_refspec = refspec;
755225de LT	239	const char *dest = uri[i];
	240	const char *sender = "git-send-pack";
	241	if (!strncmp(dest, "http://", 7) \|\|
	242	!strncmp(dest, "https://", 8))
	243	sender = "git-http-push";
441c823e NH	244	else if (thin)
441c823e NH	245	argv[dest_argc++] = "--thin";
755225de	246	argv[0] = sender;
441c823e NH	247	argv[dest_argc++] = dest;
	248	while (dest_refspec_nr--)
	249	argv[dest_argc++] = *dest_refspec++;
	250	argv[dest_argc] = NULL;
755225de LT	251	error = run_command_v(argc, argv);
	252	if (!error)
	253	continue;
	254	switch (error) {
	255	case -ERR_RUN_COMMAND_FORK:
	256	die("unable to fork for %s", sender);
	257	case -ERR_RUN_COMMAND_EXEC:
	258	die("unable to exec %s", sender);
	259	case -ERR_RUN_COMMAND_WAITPID:
	260	case -ERR_RUN_COMMAND_WAITPID_WRONG_PID:
	261	case -ERR_RUN_COMMAND_WAITPID_SIGNAL:
	262	case -ERR_RUN_COMMAND_WAITPID_NOEXIT:
	263	die("%s died with strange error", sender);
	264	default:
	265	return -error;
	266	}
	267	}
	268	return 0;
	269	}
	270
a633fca0	271	int cmd_push(int argc, const char *argv, const char prefix)
755225de LT	272	{
755225de LT	273	int i;
a9486b02	274	const char repo = "origin"; / default repository */
755225de LT	275
	276	for (i = 1; i < argc; i++) {
	277	const char *arg = argv[i];
	278
	279	if (arg[0] != '-') {
	280	repo = arg;
	281	i++;
	282	break;
	283	}
	284	if (!strcmp(arg, "--all")) {
	285	all = 1;
	286	continue;
	287	}
	288	if (!strcmp(arg, "--tags")) {
	289	tags = 1;
	290	continue;
	291	}
8f615493	292	if (!strcmp(arg, "--force") \|\| !strcmp(arg, "-f")) {
755225de LT	293	force = 1;
	294	continue;
	295	}
	296	if (!strcmp(arg, "--thin")) {
	297	thin = 1;
	298	continue;
	299	}
	300	if (!strcmp(arg, "--no-thin")) {
	301	thin = 0;
	302	continue;
	303	}
	304	if (!strncmp(arg, "--exec=", 7)) {
	305	execute = arg;
	306	continue;
	307	}
	308	usage(push_usage);
	309	}
	310	set_refspecs(argv + i, argc - i);
	311	return do_push(repo);
	312	}