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[systembsd.git] / src / config.c

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

static GKeyFile *config;
static int config_descr;

static gchar *data_dir;

static int hostnamed_ispect_xml_descr, hostnamed_dbus_xml_descr;
static int localed_ispect_xml_descr, localed_dbus_xml_descr;
static int timedated_ispect_xml_descr, timedated_dbus_xml_descr;
static int logind_ispect_xml_descr, logind_dbus_xml_descr;

/*TODO depending on builtin xml flag, these should be matched to checksums */
static gchar **hostnamed_ispect_xml, hostnamed_dbus_xml;
static gchar **localed_ispect_xml, localed_dbus_xml;
static gchar **timedated_ispect_xml, timedated_dbus_xml;
static gchar **logind_ispect_xml, logind_dbus_xml;

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;
		}

		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)) {
			config_descr = g_open(config_path, O_RDWR, 644);
			return TRUE;
		}

		g_printf("could not read config at %s! exiting..", config_path);
		return FALSE;
	}
}

gboolean init_xml() {

	gchar **data_dir_prefix;	

	data_dir_prefix = g_get_system_data_dirs();
	data_dir = g_strconcat(data_dir_prefix[0], "systemd_compat", NULL);

	GStatBuf *xml_lstat;

	/* does xml dir exist? */
	if(g_lstat(data_dir, xml_lstat)) {

		/* if not, can we write it? */
		if(g_access(data_dir_prefix[0], W_OK)) {
			g_printf("no write permissions for %s! exiting...\n", data_dir_prefix[0]);
			return FALSE;
		}

		g_printf("creating xml data directory %s...\n", data_dir);
		if(g_mkdir(data_dir, 644) {
			g_printf("failed to create dir %s...\n", data_dir);
			return FALSE;
		}

		set_xml_descriptors();
//LEFTOFF
		
		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)) {
			config_descr = g_open(config_path, O_RDWR, 644);
			return TRUE;
		}

		g_printf("could not read config at %s! exiting..", config_path);
		return FALSE;
	}


	return TRUE;
}

static void set_xml_descriptors() {
	
}

void clean_config() {

	//TODO g_ptr_array all of this
	g_free(config);
	g_free(data_dir);
	g_close(config_descr, NULL);
}