[systembsd.git] / src / config.c

/*
 * Copyright (c) 2014 Ian Sutton <ian@kremlin.cc>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <unistd.h>
#include <fcntl.h>
#include <gio/gio.h>

static GKeyFile *config;

static const gchar *CONFIG_KEYS[] = {
	"PrettyHostname",
	"IconName",
	"ChassisType"
};

/* NULL if key doesn't exist */
gchar *get_option(gchar *key, gchar *group) {

	if(!group)
		group = "default";

	return g_key_file_get_string(config, group, key, NULL);
}

/* false if key isn't already defined or value is invalid */
gboolean set_option(gchar *key, gchar *value, gchar *group) {

	if(!group)
		group = "default";

	if(!g_key_file_get_string(config, group, key, NULL))
		return FALSE;

	//TODO safteycheck value
	g_key_file_set_string(config, group, key, value);
	return TRUE;
}

/* initial load/check */
gboolean config_init() {

	if(config)
		return TRUE; //already init'd

	config = g_key_file_new();
	
	const gchar *config_path;
	GStatBuf *config_lstat;

	config_path = "/etc/systemd_compat.conf";

	/* does conf exist? */
	if(g_lstat(config_path, config_lstat)) {

		/* if not, can we write it */
		if(g_access("/etc/", W_OK)) {
			g_printf("%s\n", "no write permissions for /etc/! exiting..");
			return FALSE;
		}

		int config_descr;
		config_descr = g_open(config_path, O_CREAT, 644);

		gchar *posix_hostname;
		posix_hostname = g_malloc(255); 

		gethostname(posix_hostname, 255);

		g_key_file_set_string(config, "hostnamed", "Hostname", posix_hostname);
		g_key_file_set_string(config, "hostnamed", "PrettyHostname", "");
		g_key_file_set_string(config, "hostnamed", "IconName", "Computer");	
		g_key_file_set_string(config, "hostnamed", "ChassisType", "laptop"); //TODO set these correctly

		if(!g_key_file_save_to_file(config, config_path, NULL)) {
			g_printf("failed to write config to %s!\n", config_path);
			g_free(posix_hostname);
			return FALSE;
		}

		g_printf("wrote config to %s\n", config_path);

		g_free(posix_hostname);

		return TRUE;

	/* it does exist, read it */
	} else {

		if(!g_access(config_path, W_OK)) {
			g_printf("%s\n", "no write permissions for /etc/! exiting..");
			return FALSE;
		} else if(g_key_file_load_from_file(config, config_path, G_KEY_FILE_KEEP_COMMENTS, NULL))
			return TRUE;

		g_printf("could not read config at %s! exiting..", config_path);
		return FALSE;
	}
}
Commit	Line	Data
3b82e3c1	1	/*
	2	* Copyright (c) 2014 Ian Sutton <ian@kremlin.cc>
	3	*
	4	* Permission to use, copy, modify, and distribute this software for any
	5	* purpose with or without fee is hereby granted, provided that the above
	6	* copyright notice and this permission notice appear in all copies.
	7	*
	8	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	9	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	10	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	11	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	12	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	13	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	14	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	15	*/
	16
36575bff	17	#include <unistd.h>
	18	#include <fcntl.h>
	19	#include <gio/gio.h>
	20
	21	static GKeyFile *config;
	22
	23	static const gchar *CONFIG_KEYS[] = {
	24	"PrettyHostname",
	25	"IconName",
	26	"ChassisType"
	27	};
	28
	29	/* NULL if key doesn't exist */
	30	gchar get_option(gchar key, gchar *group) {
	31
	32	if(!group)
	33	group = "default";
	34
	35	return g_key_file_get_string(config, group, key, NULL);
	36	}
	37
	38	/* false if key isn't already defined or value is invalid */
	39	gboolean set_option(gchar key, gchar value, gchar *group) {
	40
	41	if(!group)
	42	group = "default";
	43
	44	if(!g_key_file_get_string(config, group, key, NULL))
	45	return FALSE;
	46
	47	//TODO safteycheck value
	48	g_key_file_set_string(config, group, key, value);
	49	return TRUE;
	50	}
	51
	52	/* initial load/check */
36575bff	53	gboolean config_init() {
36575bff	54
36575bff	55	if(config)
39df6847	56	return TRUE; //already init'd
	57
	58	config = g_key_file_new();
	59
	60	const gchar *config_path;
	61	GStatBuf *config_lstat;
	62
	63	config_path = "/etc/systemd_compat.conf";
	64
	65	/* does conf exist? */
	66	if(g_lstat(config_path, config_lstat)) {
	67
	68	/* if not, can we write it */
	69	if(g_access("/etc/", W_OK)) {
	70	g_printf("%s\n", "no write permissions for /etc/! exiting..");
	71	return FALSE;
	72	}
	73
	74	int config_descr;
	75	config_descr = g_open(config_path, O_CREAT, 644);
	76
	77	gchar *posix_hostname;
	78	posix_hostname = g_malloc(255);
	79
	80	gethostname(posix_hostname, 255);
	81
	82	g_key_file_set_string(config, "hostnamed", "Hostname", posix_hostname);
	83	g_key_file_set_string(config, "hostnamed", "PrettyHostname", "");
	84	g_key_file_set_string(config, "hostnamed", "IconName", "Computer");
	85	g_key_file_set_string(config, "hostnamed", "ChassisType", "laptop"); //TODO set these correctly
	86
	87	if(!g_key_file_save_to_file(config, config_path, NULL)) {
	88	g_printf("failed to write config to %s!\n", config_path);
	89	g_free(posix_hostname);
	90	return FALSE;
	91	}
	92
	93	g_printf("wrote config to %s\n", config_path);
	94
	95	g_free(posix_hostname);
	96
36575bff	97	return TRUE;
36575bff	98
39df6847	99	/* it does exist, read it */
39df6847	100	} else {
36575bff	101
39df6847	102	if(!g_access(config_path, W_OK)) {
	103	g_printf("%s\n", "no write permissions for /etc/! exiting..");
	104	return FALSE;
	105	} else if(g_key_file_load_from_file(config, config_path, G_KEY_FILE_KEEP_COMMENTS, NULL))
36575bff	106	return TRUE;
36575bff	107
39df6847	108	g_printf("could not read config at %s! exiting..", config_path);
	109	return FALSE;
	110	}
36575bff	111	}