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/*
 * Purple - Internet Messaging Library
 * Copyright (C) Pidgin Developers <devel@pidgin.im>
 *
 * 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 <https://www.gnu.org/licenses/>.
 */

#include <glib/gi18n-lib.h>

#include "purplexmppprotocol.h"

#include "purplexmppconnection.h"
#include "purplexmppconstants.h"
#include "purplexmppcore.h"

struct _PurpleXmppProtocol {
	PurpleProtocol parent;
};

/******************************************************************************
 * PurpleProtocol Implementation
 *****************************************************************************/
static GList *
purple_xmpp_protocol_get_user_splits(G_GNUC_UNUSED PurpleProtocol *protocol) {
	PurpleAccountUserSplit *split = NULL;
	GList *splits = NULL;

	split = purple_account_user_split_new(_("Server"), NULL, '@');
	splits = g_list_append(splits, split);

	return splits;
}

static GList *
purple_xmpp_protocol_get_account_options(G_GNUC_UNUSED PurpleProtocol *protocol)
{
	PurpleAccountOption *option = NULL;
	PurpleKeyValuePair *pair = NULL;
	GList *options = NULL;
	GList *items = NULL;

	option = purple_account_option_string_new(_("Resource"),
	                                          PURPLE_XMPP_OPTION_RESOURCE,
	                                          NULL);
	options = g_list_append(options, option);

	option = purple_account_option_string_new(_("Server"),
	                                          PURPLE_XMPP_OPTION_SERVER, NULL);
	options = g_list_append(options, option);

	option = purple_account_option_int_new(_("Port"), PURPLE_XMPP_OPTION_PORT,
	                                       PURPLE_XMPP_DEFAULT_PORT_TLS);
	options = g_list_append(options, option);

	pair = purple_key_value_pair_new(_("Direct TLS"), PURPLE_XMPP_TLS_DIRECT);
	items = g_list_append(items, pair);
	pair = purple_key_value_pair_new(_("STARTTLS"), PURPLE_XMPP_TLS_STARTTLS);
	items = g_list_append(items, pair);
	pair = purple_key_value_pair_new(_("None"), PURPLE_XMPP_TLS_NONE);
	items = g_list_append(items, pair);

	option = purple_account_option_list_new(_("TLS Mode"),
	                                        PURPLE_XMPP_OPTION_TLS_MODE,
	                                        items);
	options = g_list_append(options, option);

	option = purple_account_option_string_new(_("SASL login name"),
	                                          PURPLE_XMPP_OPTION_SASL_LOGIN_NAME,
	                                          NULL);
	options = g_list_append(options, option);

	option = purple_account_option_string_new(_("SASL mechanisms"),
	                                          PURPLE_XMPP_OPTION_SASL_MECHANISMS,
	                                          NULL);
	options = g_list_append(options, option);

	option = purple_account_option_bool_new(_("Allow plaintext SASL auth over "
	                                          "unencrypted connection"),
	                                        PURPLE_XMPP_OPTION_PLAIN_SASL_IN_CLEAR,
	                                        FALSE);
	options = g_list_append(options, option);

	return options;
}

static void
purple_xmpp_protocol_can_connect_async(PurpleProtocol *protocol,
                                       G_GNUC_UNUSED PurpleAccount *account,
                                       GCancellable *cancellable,
                                       GAsyncReadyCallback callback,
                                       gpointer data)
{
	GTask *task = NULL;
	GNetworkMonitor *monitor = NULL;
	GNetworkConnectivity connectivity = 0;

	task = g_task_new(protocol, cancellable, callback, data);

	/* Since we could be connecting to localhost, we only need to verify that
	 * our connectivity is at least G_NETWORK_CONNECTIVITY_LOCAL.
	 */
	monitor = g_network_monitor_get_default();
	connectivity = g_network_monitor_get_connectivity(monitor);

	if(connectivity >= G_NETWORK_CONNECTIVITY_LOCAL) {
		g_task_return_boolean(task, TRUE);
	} else {
		g_task_return_new_error(task, PURPLE_XMPP_DOMAIN, 0,
		                        _("Network connection not detected."));
	}

	g_clear_object(&task);
}

static gboolean
purple_xmpp_protocol_can_connect_finish(G_GNUC_UNUSED PurpleProtocol *protocol,
                                        GAsyncResult *result,
                                        GError **error)
{
	return g_task_propagate_boolean(G_TASK(result), error);
}

static PurpleConnection *
purple_xmpp_protocol_create_connection(PurpleProtocol *protocol,
                                       PurpleAccount *account,
                                       const char *password,
                                       G_GNUC_UNUSED GError **error)
{
	return g_object_new(
		PURPLE_XMPP_TYPE_CONNECTION,
		"protocol", protocol,
		"account", account,
		"password", password,
		NULL);
}

/******************************************************************************
 * GObject Implementation
 *****************************************************************************/
G_DEFINE_DYNAMIC_TYPE_EXTENDED(
	PurpleXmppProtocol,
	purple_xmpp_protocol,
	PURPLE_TYPE_PROTOCOL,
	G_TYPE_FLAG_FINAL,
	{})

static void
purple_xmpp_protocol_init(G_GNUC_UNUSED PurpleXmppProtocol *protocol) {
}

static void
purple_xmpp_protocol_class_finalize(G_GNUC_UNUSED PurpleXmppProtocolClass *klass) {
}

static void
purple_xmpp_protocol_class_init(PurpleXmppProtocolClass *klass) {
	PurpleProtocolClass *protocol_class = PURPLE_PROTOCOL_CLASS(klass);

	protocol_class->get_user_splits = purple_xmpp_protocol_get_user_splits;
	protocol_class->get_account_options = purple_xmpp_protocol_get_account_options;
	protocol_class->can_connect_async = purple_xmpp_protocol_can_connect_async;
	protocol_class->can_connect_finish = purple_xmpp_protocol_can_connect_finish;
	protocol_class->create_connection = purple_xmpp_protocol_create_connection;
}

/******************************************************************************
 * Internal API
 *****************************************************************************/
void
purple_xmpp_protocol_register(GPluginNativePlugin *plugin) {
	purple_xmpp_protocol_register_type(G_TYPE_MODULE(plugin));
}

PurpleProtocol *
purple_xmpp_protocol_new(void) {
	return g_object_new(
		PURPLE_XMPP_TYPE_PROTOCOL,
		"id", "prpl-xmpp",
		"name", "XMPP",
		"description", _("Modern Extensible Messaging and Presence Protocol."),
		"icon-name", "im-xmpp",
		"icon-resource-path", "/im/pidgin/libpurple/protocols/xmpp/icons",
		"options", OPT_PROTO_PASSWORD_OPTIONAL,
		NULL);
}