[thirdparty/git.git] / contrib / credential / gnome-keyring / git-credential-gnome-keyring.c

/*
 * Copyright (C) 2011 John Szakmeister <john@szakmeister.net>
 *               2012 Philipp A. Hartmann <pah@qo.cx>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

/*
 * Credits:
 * - GNOME Keyring API handling originally written by John Szakmeister
 * - ported to credential helper API by Philipp A. Hartmann
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <glib.h>
#include <gnome-keyring.h>

#ifdef GNOME_KEYRING_DEFAULT

   /* Modern gnome-keyring */

#include <gnome-keyring-memory.h>

#else

   /*
    * Support ancient gnome-keyring, circ. RHEL 5.X.
    * GNOME_KEYRING_DEFAULT seems to have been introduced with Gnome 2.22,
    * and the other features roughly around Gnome 2.20, 6 months before.
    * Ubuntu 8.04 used Gnome 2.22 (I think).  Not sure any distro used 2.20.
    * So the existence/non-existence of GNOME_KEYRING_DEFAULT seems like
    * a decent thing to use as an indicator.
    */

#define GNOME_KEYRING_DEFAULT NULL

/*
 * ancient gnome-keyring returns DENIED when an entry is not found.
 * Setting NO_MATCH to DENIED will prevent us from reporting DENIED
 * errors during get and erase operations, but we will still report
 * DENIED errors during a store.
 */
#define GNOME_KEYRING_RESULT_NO_MATCH GNOME_KEYRING_RESULT_DENIED

#define gnome_keyring_memory_alloc g_malloc
#define gnome_keyring_memory_free gnome_keyring_free_password
#define gnome_keyring_memory_strdup g_strdup

static const char *gnome_keyring_result_to_message(GnomeKeyringResult result)
{
	switch (result) {
	case GNOME_KEYRING_RESULT_OK:
		return "OK";
	case GNOME_KEYRING_RESULT_DENIED:
		return "Denied";
	case GNOME_KEYRING_RESULT_NO_KEYRING_DAEMON:
		return "No Keyring Daemon";
	case GNOME_KEYRING_RESULT_ALREADY_UNLOCKED:
		return "Already UnLocked";
	case GNOME_KEYRING_RESULT_NO_SUCH_KEYRING:
		return "No Such Keyring";
	case GNOME_KEYRING_RESULT_BAD_ARGUMENTS:
		return "Bad Arguments";
	case GNOME_KEYRING_RESULT_IO_ERROR:
		return "IO Error";
	case GNOME_KEYRING_RESULT_CANCELLED:
		return "Cancelled";
	case GNOME_KEYRING_RESULT_ALREADY_EXISTS:
		return "Already Exists";
	default:
		return "Unknown Error";
	}
}

/*
 * Support really ancient gnome-keyring, circ. RHEL 4.X.
 * Just a guess for the Glib version.  Glib 2.8 was roughly Gnome 2.12 ?
 * Which was released with gnome-keyring 0.4.3 ??
 */
#if GLIB_MAJOR_VERSION == 2 && GLIB_MINOR_VERSION < 8

static void gnome_keyring_done_cb(GnomeKeyringResult result, gpointer user_data)
{
	gpointer *data = (gpointer *)user_data;
	int *done = (int *)data[0];
	GnomeKeyringResult *r = (GnomeKeyringResult *)data[1];

	*r = result;
	*done = 1;
}

static void wait_for_request_completion(int *done)
{
	GMainContext *mc = g_main_context_default();
	while (!*done)
		g_main_context_iteration(mc, TRUE);
}

static GnomeKeyringResult gnome_keyring_item_delete_sync(const char *keyring, guint32 id)
{
	int done = 0;
	GnomeKeyringResult result;
	gpointer data[] = { &done, &result };

	gnome_keyring_item_delete(keyring, id, gnome_keyring_done_cb, data,
		NULL);

	wait_for_request_completion(&done);

	return result;
}

#endif
#endif

/*
 * This credential struct and API is simplified from git's credential.{h,c}
 */
struct credential {
	char *protocol;
	char *host;
	unsigned short port;
	char *path;
	char *username;
	char *password;
};

#define CREDENTIAL_INIT { 0 }

typedef int (*credential_op_cb)(struct credential *);

struct credential_operation {
	char *name;
	credential_op_cb op;
};

#define CREDENTIAL_OP_END { NULL, NULL }

/* ----------------- GNOME Keyring functions ----------------- */

/* create a special keyring option string, if path is given */
static char *keyring_object(struct credential *c)
{
	if (!c->path)
		return NULL;

	if (c->port)
		return g_strdup_printf("%s:%hd/%s", c->host, c->port, c->path);

	return g_strdup_printf("%s/%s", c->host, c->path);
}

static int keyring_get(struct credential *c)
{
	char *object = NULL;
	GList *entries;
	GnomeKeyringNetworkPasswordData *password_data;
	GnomeKeyringResult result;

	if (!c->protocol || !(c->host || c->path))
		return EXIT_FAILURE;

	object = keyring_object(c);

	result = gnome_keyring_find_network_password_sync(
				c->username,
				NULL /* domain */,
				c->host,
				object,
				c->protocol,
				NULL /* authtype */,
				c->port,
				&entries);

	g_free(object);

	if (result == GNOME_KEYRING_RESULT_NO_MATCH)
		return EXIT_SUCCESS;

	if (result == GNOME_KEYRING_RESULT_CANCELLED)
		return EXIT_SUCCESS;

	if (result != GNOME_KEYRING_RESULT_OK) {
		g_critical("%s", gnome_keyring_result_to_message(result));
		return EXIT_FAILURE;
	}

	/* pick the first one from the list */
	password_data = (GnomeKeyringNetworkPasswordData *)entries->data;

	gnome_keyring_memory_free(c->password);
	c->password = gnome_keyring_memory_strdup(password_data->password);

	if (!c->username)
		c->username = g_strdup(password_data->user);

	gnome_keyring_network_password_list_free(entries);

	return EXIT_SUCCESS;
}


static int keyring_store(struct credential *c)
{
	guint32 item_id;
	char *object = NULL;
	GnomeKeyringResult result;

	/*
	 * Sanity check that what we are storing is actually sensible.
	 * In particular, we can't make a URL without a protocol field.
	 * Without either a host or pathname (depending on the scheme),
	 * we have no primary key. And without a username and password,
	 * we are not actually storing a credential.
	 */
	if (!c->protocol || !(c->host || c->path) ||
	    !c->username || !c->password)
		return EXIT_FAILURE;

	object = keyring_object(c);

	result = gnome_keyring_set_network_password_sync(
				GNOME_KEYRING_DEFAULT,
				c->username,
				NULL /* domain */,
				c->host,
				object,
				c->protocol,
				NULL /* authtype */,
				c->port,
				c->password,
				&item_id);

	g_free(object);

	if (result != GNOME_KEYRING_RESULT_OK &&
	    result != GNOME_KEYRING_RESULT_CANCELLED) {
		g_critical("%s", gnome_keyring_result_to_message(result));
		return EXIT_FAILURE;
	}

	return EXIT_SUCCESS;
}

static int keyring_erase(struct credential *c)
{
	char *object = NULL;
	GList *entries;
	GnomeKeyringNetworkPasswordData *password_data;
	GnomeKeyringResult result;

	/*
	 * Sanity check that we actually have something to match
	 * against. The input we get is a restrictive pattern,
	 * so technically a blank credential means "erase everything".
	 * But it is too easy to accidentally send this, since it is equivalent
	 * to empty input. So explicitly disallow it, and require that the
	 * pattern have some actual content to match.
	 */
	if (!c->protocol && !c->host && !c->path && !c->username)
		return EXIT_FAILURE;

	object = keyring_object(c);

	result = gnome_keyring_find_network_password_sync(
				c->username,
				NULL /* domain */,
				c->host,
				object,
				c->protocol,
				NULL /* authtype */,
				c->port,
				&entries);

	g_free(object);

	if (result == GNOME_KEYRING_RESULT_NO_MATCH)
		return EXIT_SUCCESS;

	if (result == GNOME_KEYRING_RESULT_CANCELLED)
		return EXIT_SUCCESS;

	if (result != GNOME_KEYRING_RESULT_OK) {
		g_critical("%s", gnome_keyring_result_to_message(result));
		return EXIT_FAILURE;
	}

	/* pick the first one from the list (delete all matches?) */
	password_data = (GnomeKeyringNetworkPasswordData *)entries->data;

	result = gnome_keyring_item_delete_sync(
		password_data->keyring, password_data->item_id);

	gnome_keyring_network_password_list_free(entries);

	if (result != GNOME_KEYRING_RESULT_OK) {
		g_critical("%s", gnome_keyring_result_to_message(result));
		return EXIT_FAILURE;
	}

	return EXIT_SUCCESS;
}

/*
 * Table with helper operation callbacks, used by generic
 * credential helper main function.
 */
static struct credential_operation const credential_helper_ops[] = {
	{ "get",   keyring_get },
	{ "store", keyring_store },
	{ "erase", keyring_erase },
	CREDENTIAL_OP_END
};

/* ------------------ credential functions ------------------ */

static void credential_init(struct credential *c)
{
	memset(c, 0, sizeof(*c));
}

static void credential_clear(struct credential *c)
{
	g_free(c->protocol);
	g_free(c->host);
	g_free(c->path);
	g_free(c->username);
	gnome_keyring_memory_free(c->password);

	credential_init(c);
}

static int credential_read(struct credential *c)
{
	char *buf;
	size_t line_len;
	char *key;
	char *value;

	key = buf = gnome_keyring_memory_alloc(1024);

	while (fgets(buf, 1024, stdin)) {
		line_len = strlen(buf);

		if (line_len && buf[line_len-1] == '\n')
			buf[--line_len] = '\0';

		if (!line_len)
			break;

		value = strchr(buf, '=');
		if (!value) {
			g_warning("invalid credential line: %s", key);
			gnome_keyring_memory_free(buf);
			return -1;
		}
		*value++ = '\0';

		if (!strcmp(key, "protocol")) {
			g_free(c->protocol);
			c->protocol = g_strdup(value);
		} else if (!strcmp(key, "host")) {
			g_free(c->host);
			c->host = g_strdup(value);
			value = strrchr(c->host, ':');
			if (value) {
				*value++ = '\0';
				c->port = atoi(value);
			}
		} else if (!strcmp(key, "path")) {
			g_free(c->path);
			c->path = g_strdup(value);
		} else if (!strcmp(key, "username")) {
			g_free(c->username);
			c->username = g_strdup(value);
		} else if (!strcmp(key, "password")) {
			gnome_keyring_memory_free(c->password);
			c->password = gnome_keyring_memory_strdup(value);
			while (*value)
				*value++ = '\0';
		}
		/*
		 * Ignore other lines; we don't know what they mean, but
		 * this future-proofs us when later versions of git do
		 * learn new lines, and the helpers are updated to match.
		 */
	}

	gnome_keyring_memory_free(buf);

	return 0;
}

static void credential_write_item(FILE *fp, const char *key, const char *value)
{
	if (!value)
		return;
	fprintf(fp, "%s=%s\n", key, value);
}

static void credential_write(const struct credential *c)
{
	/* only write username/password, if set */
	credential_write_item(stdout, "username", c->username);
	credential_write_item(stdout, "password", c->password);
}

static void usage(const char *name)
{
	struct credential_operation const *try_op = credential_helper_ops;
	const char *basename = strrchr(name, '/');

	basename = (basename) ? basename + 1 : name;
	fprintf(stderr, "usage: %s <", basename);
	while (try_op->name) {
		fprintf(stderr, "%s", (try_op++)->name);
		if (try_op->name)
			fprintf(stderr, "%s", "|");
	}
	fprintf(stderr, "%s", ">\n");
}

int main(int argc, char *argv[])
{
	int ret = EXIT_SUCCESS;

	struct credential_operation const *try_op = credential_helper_ops;
	struct credential cred = CREDENTIAL_INIT;

	if (!argv[1]) {
		usage(argv[0]);
		exit(EXIT_FAILURE);
	}

	g_set_application_name("Git Credential Helper");

	/* lookup operation callback */
	while (try_op->name && strcmp(argv[1], try_op->name))
		try_op++;

	/* unsupported operation given -- ignore silently */
	if (!try_op->name || !try_op->op)
		goto out;

	ret = credential_read(&cred);
	if (ret)
		goto out;

	/* perform credential operation */
	ret = (*try_op->op)(&cred);

	credential_write(&cred);

out:
	credential_clear(&cred);
	return ret;
}
Commit	Line	Data
0e7afb18 PH	1	/*
	2	* Copyright (C) 2011 John Szakmeister <john@szakmeister.net>
	3	* 2012 Philipp A. Hartmann <pah@qo.cx>
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; either version 2 of the License, or
	8	* (at your option) any later version.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
48425792	16	* along with this program; if not, see <http://www.gnu.org/licenses/>.
0e7afb18 PH	17	*/
	18
	19	/*
	20	* Credits:
	21	* - GNOME Keyring API handling originally written by John Szakmeister
	22	* - ported to credential helper API by Philipp A. Hartmann
	23	*/
	24
	25	#include <stdio.h>
	26	#include <string.h>
0e7afb18	27	#include <stdlib.h>
ff55c47d	28	#include <glib.h>
0e7afb18	29	#include <gnome-keyring.h>
5a3db110 BC	30
	31	#ifdef GNOME_KEYRING_DEFAULT
	32
	33	/* Modern gnome-keyring */
	34
9fe3e6cf	35	#include <gnome-keyring-memory.h>
0e7afb18	36
5a3db110 BC	37	#else
	38
	39	/*
	40	* Support ancient gnome-keyring, circ. RHEL 5.X.
	41	* GNOME_KEYRING_DEFAULT seems to have been introduced with Gnome 2.22,
	42	* and the other features roughly around Gnome 2.20, 6 months before.
	43	* Ubuntu 8.04 used Gnome 2.22 (I think). Not sure any distro used 2.20.
	44	* So the existence/non-existence of GNOME_KEYRING_DEFAULT seems like
	45	* a decent thing to use as an indicator.
	46	*/
	47
	48	#define GNOME_KEYRING_DEFAULT NULL
	49
	50	/*
	51	* ancient gnome-keyring returns DENIED when an entry is not found.
	52	* Setting NO_MATCH to DENIED will prevent us from reporting DENIED
	53	* errors during get and erase operations, but we will still report
	54	* DENIED errors during a store.
	55	*/
	56	#define GNOME_KEYRING_RESULT_NO_MATCH GNOME_KEYRING_RESULT_DENIED
	57
	58	#define gnome_keyring_memory_alloc g_malloc
	59	#define gnome_keyring_memory_free gnome_keyring_free_password
	60	#define gnome_keyring_memory_strdup g_strdup
	61
0162b3c4	62	static const char *gnome_keyring_result_to_message(GnomeKeyringResult result)
5a3db110 BC	63	{
	64	switch (result) {
	65	case GNOME_KEYRING_RESULT_OK:
	66	return "OK";
	67	case GNOME_KEYRING_RESULT_DENIED:
	68	return "Denied";
	69	case GNOME_KEYRING_RESULT_NO_KEYRING_DAEMON:
	70	return "No Keyring Daemon";
	71	case GNOME_KEYRING_RESULT_ALREADY_UNLOCKED:
	72	return "Already UnLocked";
	73	case GNOME_KEYRING_RESULT_NO_SUCH_KEYRING:
	74	return "No Such Keyring";
	75	case GNOME_KEYRING_RESULT_BAD_ARGUMENTS:
	76	return "Bad Arguments";
	77	case GNOME_KEYRING_RESULT_IO_ERROR:
	78	return "IO Error";
	79	case GNOME_KEYRING_RESULT_CANCELLED:
	80	return "Cancelled";
	81	case GNOME_KEYRING_RESULT_ALREADY_EXISTS:
	82	return "Already Exists";
	83	default:
	84	return "Unknown Error";
	85	}
	86	}
	87
15f72216 BC	88	/*
	89	* Support really ancient gnome-keyring, circ. RHEL 4.X.
	90	* Just a guess for the Glib version. Glib 2.8 was roughly Gnome 2.12 ?
	91	* Which was released with gnome-keyring 0.4.3 ??
	92	*/
	93	#if GLIB_MAJOR_VERSION == 2 && GLIB_MINOR_VERSION < 8
	94
	95	static void gnome_keyring_done_cb(GnomeKeyringResult result, gpointer user_data)
	96	{
0162b3c4 JS	97	gpointer data = (gpointer )user_data;
	98	int done = (int )data[0];
	99	GnomeKeyringResult r = (GnomeKeyringResult )data[1];
15f72216 BC	100
	101	*r = result;
	102	*done = 1;
	103	}
	104
	105	static void wait_for_request_completion(int *done)
	106	{
	107	GMainContext *mc = g_main_context_default();
	108	while (!*done)
	109	g_main_context_iteration(mc, TRUE);
	110	}
	111
	112	static GnomeKeyringResult gnome_keyring_item_delete_sync(const char *keyring, guint32 id)
	113	{
	114	int done = 0;
	115	GnomeKeyringResult result;
	116	gpointer data[] = { &done, &result };
	117
	118	gnome_keyring_item_delete(keyring, id, gnome_keyring_done_cb, data,
	119	NULL);
	120
	121	wait_for_request_completion(&done);
	122
	123	return result;
	124	}
	125
	126	#endif
5a3db110 BC	127	#endif
5a3db110 BC	128
0e7afb18 PH	129	/*
	130	* This credential struct and API is simplified from git's credential.{h,c}
	131	*/
0162b3c4 JS	132	struct credential {
	133	char *protocol;
	134	char *host;
0e7afb18	135	unsigned short port;
0162b3c4 JS	136	char *path;
	137	char *username;
	138	char *password;
0e7afb18 PH	139	};
0e7afb18 PH	140
9865b6e6	141	#define CREDENTIAL_INIT { 0 }
0e7afb18	142
0162b3c4	143	typedef int (credential_op_cb)(struct credential );
0e7afb18	144
0162b3c4 JS	145	struct credential_operation {
0162b3c4 JS	146	char *name;
0e7afb18 PH	147	credential_op_cb op;
	148	};
	149
0162b3c4	150	#define CREDENTIAL_OP_END { NULL, NULL }
0e7afb18	151
0e7afb18 PH	152	/* ----------------- GNOME Keyring functions ----------------- */
	153
	154	/* create a special keyring option string, if path is given */
0162b3c4	155	static char keyring_object(struct credential c)
0e7afb18	156	{
0e7afb18	157	if (!c->path)
8bb7a54c	158	return NULL;
0e7afb18	159
4bc47cc0	160	if (c->port)
8bb7a54c	161	return g_strdup_printf("%s:%hd/%s", c->host, c->port, c->path);
0e7afb18	162
8bb7a54c	163	return g_strdup_printf("%s/%s", c->host, c->path);
0e7afb18 PH	164	}
0e7afb18 PH	165
18fe5add	166	static int keyring_get(struct credential *c)
0e7afb18	167	{
0162b3c4	168	char *object = NULL;
0e7afb18 PH	169	GList *entries;
	170	GnomeKeyringNetworkPasswordData *password_data;
	171	GnomeKeyringResult result;
	172
	173	if (!c->protocol \|\| !(c->host \|\| c->path))
	174	return EXIT_FAILURE;
	175
	176	object = keyring_object(c);
	177
	178	result = gnome_keyring_find_network_password_sync(
	179	c->username,
	180	NULL /* domain */,
	181	c->host,
	182	object,
	183	c->protocol,
	184	NULL /* authtype */,
	185	c->port,
	186	&entries);
	187
68a65f5f	188	g_free(object);
0e7afb18 PH	189
	190	if (result == GNOME_KEYRING_RESULT_NO_MATCH)
	191	return EXIT_SUCCESS;
	192
	193	if (result == GNOME_KEYRING_RESULT_CANCELLED)
	194	return EXIT_SUCCESS;
	195
	196	if (result != GNOME_KEYRING_RESULT_OK) {
3006297a	197	g_critical("%s", gnome_keyring_result_to_message(result));
0e7afb18 PH	198	return EXIT_FAILURE;
	199	}
	200
	201	/* pick the first one from the list */
0162b3c4	202	password_data = (GnomeKeyringNetworkPasswordData *)entries->data;
0e7afb18	203
9fe3e6cf BC	204	gnome_keyring_memory_free(c->password);
9fe3e6cf BC	205	c->password = gnome_keyring_memory_strdup(password_data->password);
0e7afb18 PH	206
0e7afb18 PH	207	if (!c->username)
68a65f5f	208	c->username = g_strdup(password_data->user);
0e7afb18 PH	209
	210	gnome_keyring_network_password_list_free(entries);
	211
	212	return EXIT_SUCCESS;
	213	}
	214
	215
18fe5add	216	static int keyring_store(struct credential *c)
0e7afb18 PH	217	{
0e7afb18 PH	218	guint32 item_id;
0162b3c4	219	char *object = NULL;
81c57e2c	220	GnomeKeyringResult result;
0e7afb18 PH	221
	222	/*
	223	* Sanity check that what we are storing is actually sensible.
	224	* In particular, we can't make a URL without a protocol field.
	225	* Without either a host or pathname (depending on the scheme),
	226	* we have no primary key. And without a username and password,
	227	* we are not actually storing a credential.
	228	*/
	229	if (!c->protocol \|\| !(c->host \|\| c->path) \|\|
	230	!c->username \|\| !c->password)
	231	return EXIT_FAILURE;
	232
	233	object = keyring_object(c);
	234
81c57e2c	235	result = gnome_keyring_set_network_password_sync(
0e7afb18 PH	236	GNOME_KEYRING_DEFAULT,
	237	c->username,
	238	NULL /* domain */,
	239	c->host,
	240	object,
	241	c->protocol,
	242	NULL /* authtype */,
	243	c->port,
	244	c->password,
	245	&item_id);
	246
68a65f5f	247	g_free(object);
81c57e2c BC	248
	249	if (result != GNOME_KEYRING_RESULT_OK &&
	250	result != GNOME_KEYRING_RESULT_CANCELLED) {
	251	g_critical("%s", gnome_keyring_result_to_message(result));
	252	return EXIT_FAILURE;
	253	}
	254
0e7afb18 PH	255	return EXIT_SUCCESS;
	256	}
	257
18fe5add	258	static int keyring_erase(struct credential *c)
0e7afb18	259	{
0162b3c4	260	char *object = NULL;
0e7afb18 PH	261	GList *entries;
	262	GnomeKeyringNetworkPasswordData *password_data;
	263	GnomeKeyringResult result;
	264
	265	/*
	266	* Sanity check that we actually have something to match
	267	* against. The input we get is a restrictive pattern,
	268	* so technically a blank credential means "erase everything".
	269	* But it is too easy to accidentally send this, since it is equivalent
	270	* to empty input. So explicitly disallow it, and require that the
	271	* pattern have some actual content to match.
	272	*/
	273	if (!c->protocol && !c->host && !c->path && !c->username)
	274	return EXIT_FAILURE;
	275
	276	object = keyring_object(c);
	277
	278	result = gnome_keyring_find_network_password_sync(
	279	c->username,
	280	NULL /* domain */,
	281	c->host,
	282	object,
	283	c->protocol,
	284	NULL /* authtype */,
	285	c->port,
	286	&entries);
	287
68a65f5f	288	g_free(object);
0e7afb18 PH	289
	290	if (result == GNOME_KEYRING_RESULT_NO_MATCH)
	291	return EXIT_SUCCESS;
	292
	293	if (result == GNOME_KEYRING_RESULT_CANCELLED)
	294	return EXIT_SUCCESS;
	295
0162b3c4	296	if (result != GNOME_KEYRING_RESULT_OK) {
3006297a	297	g_critical("%s", gnome_keyring_result_to_message(result));
0e7afb18 PH	298	return EXIT_FAILURE;
	299	}
	300
	301	/* pick the first one from the list (delete all matches?) */
0162b3c4	302	password_data = (GnomeKeyringNetworkPasswordData *)entries->data;
0e7afb18 PH	303
	304	result = gnome_keyring_item_delete_sync(
	305	password_data->keyring, password_data->item_id);
	306
	307	gnome_keyring_network_password_list_free(entries);
	308
0162b3c4	309	if (result != GNOME_KEYRING_RESULT_OK) {
3006297a	310	g_critical("%s", gnome_keyring_result_to_message(result));
0e7afb18 PH	311	return EXIT_FAILURE;
	312	}
	313
	314	return EXIT_SUCCESS;
	315	}
	316
	317	/*
	318	* Table with helper operation callbacks, used by generic
	319	* credential helper main function.
	320	*/
0162b3c4 JS	321	static struct credential_operation const credential_helper_ops[] = {
0162b3c4 JS	322	{ "get", keyring_get },
0e7afb18 PH	323	{ "store", keyring_store },
	324	{ "erase", keyring_erase },
	325	CREDENTIAL_OP_END
	326	};
	327
	328	/* ------------------ credential functions ------------------ */
	329
18fe5add	330	static void credential_init(struct credential *c)
0e7afb18 PH	331	{
	332	memset(c, 0, sizeof(*c));
	333	}
	334
18fe5add	335	static void credential_clear(struct credential *c)
0e7afb18	336	{
68a65f5f BC	337	g_free(c->protocol);
	338	g_free(c->host);
	339	g_free(c->path);
	340	g_free(c->username);
9fe3e6cf	341	gnome_keyring_memory_free(c->password);
0e7afb18 PH	342
	343	credential_init(c);
	344	}
	345
18fe5add	346	static int credential_read(struct credential *c)
0e7afb18	347	{
0162b3c4	348	char *buf;
fb276374	349	size_t line_len;
0162b3c4 JS	350	char *key;
0162b3c4 JS	351	char *value;
0e7afb18	352
da2727f2 BC	353	key = buf = gnome_keyring_memory_alloc(1024);
da2727f2 BC	354
0162b3c4	355	while (fgets(buf, 1024, stdin)) {
0e7afb18 PH	356	line_len = strlen(buf);
0e7afb18 PH	357
73bbc079	358	if (line_len && buf[line_len-1] == '\n')
0162b3c4	359	buf[--line_len] = '\0';
0e7afb18	360
4bc47cc0	361	if (!line_len)
0e7afb18 PH	362	break;
0e7afb18 PH	363
0162b3c4	364	value = strchr(buf, '=');
4bc47cc0	365	if (!value) {
3006297a	366	g_warning("invalid credential line: %s", key);
da2727f2	367	gnome_keyring_memory_free(buf);
0e7afb18 PH	368	return -1;
	369	}
	370	*value++ = '\0';
	371
	372	if (!strcmp(key, "protocol")) {
68a65f5f BC	373	g_free(c->protocol);
68a65f5f BC	374	c->protocol = g_strdup(value);
0e7afb18	375	} else if (!strcmp(key, "host")) {
68a65f5f BC	376	g_free(c->host);
68a65f5f BC	377	c->host = g_strdup(value);
0162b3c4	378	value = strrchr(c->host, ':');
0e7afb18 PH	379	if (value) {
	380	*value++ = '\0';
	381	c->port = atoi(value);
	382	}
	383	} else if (!strcmp(key, "path")) {
68a65f5f BC	384	g_free(c->path);
68a65f5f BC	385	c->path = g_strdup(value);
0e7afb18	386	} else if (!strcmp(key, "username")) {
68a65f5f BC	387	g_free(c->username);
68a65f5f BC	388	c->username = g_strdup(value);
0e7afb18	389	} else if (!strcmp(key, "password")) {
9fe3e6cf BC	390	gnome_keyring_memory_free(c->password);
9fe3e6cf BC	391	c->password = gnome_keyring_memory_strdup(value);
0162b3c4 JS	392	while (*value)
0162b3c4 JS	393	*value++ = '\0';
0e7afb18 PH	394	}
	395	/*
	396	* Ignore other lines; we don't know what they mean, but
	397	* this future-proofs us when later versions of git do
	398	* learn new lines, and the helpers are updated to match.
	399	*/
	400	}
da2727f2 BC	401
	402	gnome_keyring_memory_free(buf);
	403
0e7afb18 PH	404	return 0;
	405	}
	406
18fe5add	407	static void credential_write_item(FILE fp, const char key, const char *value)
0e7afb18 PH	408	{
	409	if (!value)
	410	return;
	411	fprintf(fp, "%s=%s\n", key, value);
	412	}
	413
18fe5add	414	static void credential_write(const struct credential *c)
0e7afb18 PH	415	{
	416	/* only write username/password, if set */
	417	credential_write_item(stdout, "username", c->username);
	418	credential_write_item(stdout, "password", c->password);
	419	}
	420
	421	static void usage(const char *name)
	422	{
	423	struct credential_operation const *try_op = credential_helper_ops;
0162b3c4	424	const char *basename = strrchr(name, '/');
0e7afb18 PH	425
0e7afb18 PH	426	basename = (basename) ? basename + 1 : name;
c358ed75	427	fprintf(stderr, "usage: %s <", basename);
4bc47cc0	428	while (try_op->name) {
0162b3c4	429	fprintf(stderr, "%s", (try_op++)->name);
4bc47cc0	430	if (try_op->name)
0162b3c4	431	fprintf(stderr, "%s", "\|");
0e7afb18	432	}
0162b3c4	433	fprintf(stderr, "%s", ">\n");
0e7afb18 PH	434	}
	435
	436	int main(int argc, char *argv[])
	437	{
	438	int ret = EXIT_SUCCESS;
	439
	440	struct credential_operation const *try_op = credential_helper_ops;
0162b3c4	441	struct credential cred = CREDENTIAL_INIT;
0e7afb18 PH	442
	443	if (!argv[1]) {
	444	usage(argv[0]);
7a6d6423	445	exit(EXIT_FAILURE);
0e7afb18 PH	446	}
0e7afb18 PH	447
ff55c47d BC	448	g_set_application_name("Git Credential Helper");
ff55c47d BC	449
0e7afb18	450	/* lookup operation callback */
4bc47cc0	451	while (try_op->name && strcmp(argv[1], try_op->name))
0e7afb18 PH	452	try_op++;
	453
	454	/* unsupported operation given -- ignore silently */
4bc47cc0	455	if (!try_op->name \|\| !try_op->op)
0e7afb18 PH	456	goto out;
	457
	458	ret = credential_read(&cred);
4bc47cc0	459	if (ret)
0e7afb18 PH	460	goto out;
	461
	462	/* perform credential operation */
	463	ret = (*try_op->op)(&cred);
	464
	465	credential_write(&cred);
	466
	467	out:
	468	credential_clear(&cred);
	469	return ret;
	470	}