[thirdparty/git.git] / builtin / credential-cache.c

#include "builtin.h"
#include "parse-options.h"

#ifndef NO_UNIX_SOCKETS

#include "credential.h"
#include "string-list.h"
#include "unix-socket.h"
#include "run-command.h"

#define FLAG_SPAWN 0x1
#define FLAG_RELAY 0x2

static int send_request(const char *socket, const struct strbuf *out)
{
	int got_data = 0;
	int fd = unix_stream_connect(socket);

	if (fd < 0)
		return -1;

	if (write_in_full(fd, out->buf, out->len) < 0)
		die_errno("unable to write to cache daemon");
	shutdown(fd, SHUT_WR);

	while (1) {
		char in[1024];
		int r;

		r = read_in_full(fd, in, sizeof(in));
		if (r == 0 || (r < 0 && errno == ECONNRESET))
			break;
		if (r < 0)
			die_errno("read error from cache daemon");
		write_or_die(1, in, r);
		got_data = 1;
	}
	close(fd);
	return got_data;
}

static void spawn_daemon(const char *socket)
{
	struct child_process daemon = CHILD_PROCESS_INIT;
	char buf[128];
	int r;

	strvec_pushl(&daemon.args,
		     "credential-cache--daemon", socket,
		     NULL);
	daemon.git_cmd = 1;
	daemon.no_stdin = 1;
	daemon.out = -1;

	if (start_command(&daemon))
		die_errno("unable to start cache daemon");
	r = read_in_full(daemon.out, buf, sizeof(buf));
	if (r < 0)
		die_errno("unable to read result code from cache daemon");
	if (r != 3 || memcmp(buf, "ok\n", 3))
		die("cache daemon did not start: %.*s", r, buf);
	close(daemon.out);
}

static void do_cache(const char *socket, const char *action, int timeout,
		     int flags)
{
	struct strbuf buf = STRBUF_INIT;

	strbuf_addf(&buf, "action=%s\n", action);
	strbuf_addf(&buf, "timeout=%d\n", timeout);
	if (flags & FLAG_RELAY) {
		if (strbuf_read(&buf, 0, 0) < 0)
			die_errno("unable to relay credential");
	}

	if (send_request(socket, &buf) < 0) {
		if (errno != ENOENT && errno != ECONNREFUSED)
			die_errno("unable to connect to cache daemon");
		if (flags & FLAG_SPAWN) {
			spawn_daemon(socket);
			if (send_request(socket, &buf) < 0)
				die_errno("unable to connect to cache daemon");
		}
	}
	strbuf_release(&buf);
}

static char *get_socket_path(void)
{
	struct stat sb;
	char *old_dir, *socket;
	old_dir = expand_user_path("~/.git-credential-cache", 0);
	if (old_dir && !stat(old_dir, &sb) && S_ISDIR(sb.st_mode))
		socket = xstrfmt("%s/socket", old_dir);
	else
		socket = xdg_cache_home("credential/socket");
	free(old_dir);
	return socket;
}

int cmd_credential_cache(int argc, const char **argv, const char *prefix)
{
	char *socket_path = NULL;
	int timeout = 900;
	const char *op;
	const char * const usage[] = {
		"git credential-cache [<options>] <action>",
		NULL
	};
	struct option options[] = {
		OPT_INTEGER(0, "timeout", &timeout,
			    "number of seconds to cache credentials"),
		OPT_STRING(0, "socket", &socket_path, "path",
			   "path of cache-daemon socket"),
		OPT_END()
	};

	argc = parse_options(argc, argv, prefix, options, usage, 0);
	if (!argc)
		usage_with_options(usage, options);
	op = argv[0];

	if (!socket_path)
		socket_path = get_socket_path();
	if (!socket_path)
		die("unable to find a suitable socket path; use --socket");

	if (!strcmp(op, "exit"))
		do_cache(socket_path, op, timeout, 0);
	else if (!strcmp(op, "get") || !strcmp(op, "erase"))
		do_cache(socket_path, op, timeout, FLAG_RELAY);
	else if (!strcmp(op, "store"))
		do_cache(socket_path, op, timeout, FLAG_RELAY|FLAG_SPAWN);
	else
		; /* ignore unknown operation */

	return 0;
}

#else

int cmd_credential_cache(int argc, const char **argv, const char *prefix)
{
	const char * const usage[] = {
		"git credential-cache [options] <action>",
		"",
		"credential-cache is disabled in this build of Git",
		NULL
	};
	struct option options[] = { OPT_END() };

	argc = parse_options(argc, argv, prefix, options, usage, 0);
	die(_("credential-cache unavailable; no unix socket support"));
}

#endif /* NO_UNIX_SOCKETS */
Commit	Line	Data
b5dd96b7 JK	1	#include "builtin.h"
	2	#include "parse-options.h"
	3
	4	#ifndef NO_UNIX_SOCKETS
	5
e2770979 JK	6	#include "credential.h"
e2770979 JK	7	#include "string-list.h"
e2770979 JK	8	#include "unix-socket.h"
	9	#include "run-command.h"
	10
	11	#define FLAG_SPAWN 0x1
	12	#define FLAG_RELAY 0x2
	13
	14	static int send_request(const char socket, const struct strbuf out)
	15	{
	16	int got_data = 0;
	17	int fd = unix_stream_connect(socket);
	18
	19	if (fd < 0)
	20	return -1;
	21
	22	if (write_in_full(fd, out->buf, out->len) < 0)
	23	die_errno("unable to write to cache daemon");
	24	shutdown(fd, SHUT_WR);
	25
	26	while (1) {
	27	char in[1024];
	28	int r;
	29
	30	r = read_in_full(fd, in, sizeof(in));
1f180e5e	31	if (r == 0 \|\| (r < 0 && errno == ECONNRESET))
e2770979 JK	32	break;
	33	if (r < 0)
	34	die_errno("read error from cache daemon");
	35	write_or_die(1, in, r);
	36	got_data = 1;
	37	}
9c60d9fa	38	close(fd);
e2770979 JK	39	return got_data;
	40	}
	41
	42	static void spawn_daemon(const char *socket)
	43	{
d3180279	44	struct child_process daemon = CHILD_PROCESS_INIT;
e2770979 JK	45	char buf[128];
	46	int r;
	47
c0e190c1 JH	48	strvec_pushl(&daemon.args,
	49	"credential-cache--daemon", socket,
	50	NULL);
	51	daemon.git_cmd = 1;
e2770979 JK	52	daemon.no_stdin = 1;
	53	daemon.out = -1;
	54
	55	if (start_command(&daemon))
	56	die_errno("unable to start cache daemon");
	57	r = read_in_full(daemon.out, buf, sizeof(buf));
	58	if (r < 0)
	59	die_errno("unable to read result code from cache daemon");
	60	if (r != 3 \|\| memcmp(buf, "ok\n", 3))
	61	die("cache daemon did not start: %.*s", r, buf);
	62	close(daemon.out);
	63	}
	64
	65	static void do_cache(const char socket, const char action, int timeout,
	66	int flags)
	67	{
	68	struct strbuf buf = STRBUF_INIT;
	69
	70	strbuf_addf(&buf, "action=%s\n", action);
	71	strbuf_addf(&buf, "timeout=%d\n", timeout);
	72	if (flags & FLAG_RELAY) {
	73	if (strbuf_read(&buf, 0, 0) < 0)
	74	die_errno("unable to relay credential");
	75	}
	76
8ec6c8d7	77	if (send_request(socket, &buf) < 0) {
35a71f14	78	if (errno != ENOENT && errno != ECONNREFUSED)
98c2924c	79	die_errno("unable to connect to cache daemon");
8ec6c8d7 JK	80	if (flags & FLAG_SPAWN) {
	81	spawn_daemon(socket);
	82	if (send_request(socket, &buf) < 0)
	83	die_errno("unable to connect to cache daemon");
	84	}
e2770979 JK	85	}
	86	strbuf_release(&buf);
	87	}
	88
60759baa DL	89	static char *get_socket_path(void)
	90	{
	91	struct stat sb;
	92	char old_dir, socket;
a2e2c046	93	old_dir = expand_user_path("~/.git-credential-cache", 0);
60759baa DL	94	if (old_dir && !stat(old_dir, &sb) && S_ISDIR(sb.st_mode))
	95	socket = xstrfmt("%s/socket", old_dir);
	96	else
	97	socket = xdg_cache_home("credential/socket");
	98	free(old_dir);
	99	return socket;
	100	}
	101
b5dd96b7	102	int cmd_credential_cache(int argc, const char *argv, const char prefix)
e2770979 JK	103	{
	104	char *socket_path = NULL;
	105	int timeout = 900;
	106	const char *op;
	107	const char * const usage[] = {
d96a0313	108	"git credential-cache [<options>] <action>",
e2770979 JK	109	NULL
	110	};
	111	struct option options[] = {
	112	OPT_INTEGER(0, "timeout", &timeout,
	113	"number of seconds to cache credentials"),
	114	OPT_STRING(0, "socket", &socket_path, "path",
	115	"path of cache-daemon socket"),
	116	OPT_END()
	117	};
	118
b5dd96b7	119	argc = parse_options(argc, argv, prefix, options, usage, 0);
e2770979 JK	120	if (!argc)
	121	usage_with_options(usage, options);
	122	op = argv[0];
	123
	124	if (!socket_path)
60759baa	125	socket_path = get_socket_path();
e2770979 JK	126	if (!socket_path)
	127	die("unable to find a suitable socket path; use --socket");
	128
	129	if (!strcmp(op, "exit"))
	130	do_cache(socket_path, op, timeout, 0);
	131	else if (!strcmp(op, "get") \|\| !strcmp(op, "erase"))
	132	do_cache(socket_path, op, timeout, FLAG_RELAY);
	133	else if (!strcmp(op, "store"))
	134	do_cache(socket_path, op, timeout, FLAG_RELAY\|FLAG_SPAWN);
	135	else
	136	; /* ignore unknown operation */
	137
	138	return 0;
	139	}
b5dd96b7 JK	140
	141	#else
	142
	143	int cmd_credential_cache(int argc, const char *argv, const char prefix)
	144	{
	145	const char * const usage[] = {
	146	"git credential-cache [options] <action>",
	147	"",
	148	"credential-cache is disabled in this build of Git",
	149	NULL
	150	};
	151	struct option options[] = { OPT_END() };
	152
	153	argc = parse_options(argc, argv, prefix, options, usage, 0);
	154	die(_("credential-cache unavailable; no unix socket support"));
	155	}
	156
	157	#endif /* NO_UNIX_SOCKETS */