pidgin/pidgin

Implement SNI support for the gnutls SSL plugin.
release-2.x.y
2019-12-16, Mihai Moldovan
6dba8046e1b1
Implement SNI support for the gnutls SSL plugin.

Note that gnutls is picky in regard to what it accepts as the server name - it
MUST be a domain name. IP addresses are not supported according to the
documentation.

Hence, filter out IP addresses and hope that whatever is not recognized as
such an address is actually a domain name. This will probably fail for more
exotic addresses (especially in IPv6 realm), but wiring up a full-blown parser
is too much effort and SSL plugins are not part of purple-3 anyway.

Fixes #17300
/**
* @file gtkplugin.h GTK+ Plugin API
* @ingroup pidgin
*/
/* pidgin
*
* Pidgin is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#ifndef _PIDGINPLUGIN_H_
#define _PIDGINPLUGIN_H_
#include "pidgin.h"
#include "plugin.h"
typedef struct _PidginPluginUiInfo PidginPluginUiInfo;
/**
* A GTK+ UI structure for plugins.
*/
struct _PidginPluginUiInfo
{
GtkWidget *(*get_config_frame)(PurplePlugin *plugin);
int page_num; /**< Reserved */
/* padding */
void (*_pidgin_reserved1)(void);
void (*_pidgin_reserved2)(void);
void (*_pidgin_reserved3)(void);
void (*_pidgin_reserved4)(void);
};
#define PIDGIN_PLUGIN_TYPE PIDGIN_UI
#define PIDGIN_IS_PIDGIN_PLUGIN(plugin) \
((plugin)->info != NULL && (plugin)->info->ui_info != NULL && \
purple_strequal((plugin)->info->ui_requirement, PIDGIN_PLUGIN_TYPE))
#define PIDGIN_PLUGIN_UI_INFO(plugin) \
((PidginPluginUiInfo *)(plugin)->info->ui_info)
/**
* Returns the configuration frame widget for a GTK+ plugin, if one
* exists.
*
* @param plugin The plugin.
*
* @return The frame, if the plugin is a GTK+ plugin and provides a
* configuration frame.
*/
GtkWidget *pidgin_plugin_get_config_frame(PurplePlugin *plugin);
/**
* Saves all loaded plugins.
*/
void pidgin_plugins_save(void);
/**
* Shows the Plugins dialog
*/
void pidgin_plugin_dialog_show(void);
#endif /* _PIDGINPLUGIN_H_ */