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/* purple
 *
 * Purple 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 _PURPLE_PROXY_H_
#define _PURPLE_PROXY_H_
/**
 * SECTION:proxy
 * @section_id: libpurple-proxy
 * @short_description: <filename>proxy.h</filename>
 * @title: Proxy API
 */

#include <glib.h>
#include "eventloop.h"

/**
 * PurpleProxyType:
 * @PURPLE_PROXY_USE_GLOBAL: Use the global proxy information.
 * @PURPLE_PROXY_NONE:       No proxy.
 * @PURPLE_PROXY_HTTP:       HTTP proxy.
 * @PURPLE_PROXY_SOCKS4:     SOCKS 4 proxy.
 * @PURPLE_PROXY_SOCKS5:     SOCKS 5 proxy.
 * @PURPLE_PROXY_USE_ENVVAR: Use environmental settings.
 * @PURPLE_PROXY_TOR:        Use a Tor proxy (SOCKS 5 really).
 *
 * A type of proxy connection.
 */
typedef enum
{
	PURPLE_PROXY_USE_GLOBAL = -1,
	PURPLE_PROXY_NONE = 0,
	PURPLE_PROXY_HTTP,
	PURPLE_PROXY_SOCKS4,
	PURPLE_PROXY_SOCKS5,
	PURPLE_PROXY_USE_ENVVAR,
	PURPLE_PROXY_TOR

} PurpleProxyType;

/**
 * PurpleProxyInfo:
 *
 * Information on proxy settings.
 */
typedef struct _PurpleProxyInfo PurpleProxyInfo;

typedef struct _PurpleProxyConnectData PurpleProxyConnectData;

typedef void (*PurpleProxyConnectFunction)(gpointer data, gint source, const gchar *error_message);


#include "account.h"

G_BEGIN_DECLS

/**************************************************************************/
/* Proxy structure API                                                    */
/**************************************************************************/

/**
 * purple_proxy_info_new:
 *
 * Creates a proxy information structure.
 *
 * Returns: The proxy information structure.
 */
PurpleProxyInfo *purple_proxy_info_new(void);

/**
 * purple_proxy_info_destroy:
 * @info: The proxy information structure to destroy.
 *
 * Destroys a proxy information structure.
 */
void purple_proxy_info_destroy(PurpleProxyInfo *info);

/**
 * purple_proxy_info_set_proxy_type:
 * @info: The proxy information.
 * @type: The proxy type.
 *
 * Sets the type of proxy.
 */
void purple_proxy_info_set_proxy_type(PurpleProxyInfo *info, PurpleProxyType type);

/**
 * purple_proxy_info_set_host:
 * @info: The proxy information.
 * @host: The host.
 *
 * Sets the proxy host.
 */
void purple_proxy_info_set_host(PurpleProxyInfo *info, const char *host);

/**
 * purple_proxy_info_set_port:
 * @info: The proxy information.
 * @port: The port.
 *
 * Sets the proxy port.
 */
void purple_proxy_info_set_port(PurpleProxyInfo *info, int port);

/**
 * purple_proxy_info_set_username:
 * @info:     The proxy information.
 * @username: The username.
 *
 * Sets the proxy username.
 */
void purple_proxy_info_set_username(PurpleProxyInfo *info, const char *username);

/**
 * purple_proxy_info_set_password:
 * @info:     The proxy information.
 * @password: The password.
 *
 * Sets the proxy password.
 */
void purple_proxy_info_set_password(PurpleProxyInfo *info, const char *password);

/**
 * purple_proxy_info_get_proxy_type:
 * @info: The proxy information.
 *
 * Returns the proxy's type.
 *
 * Returns: The type.
 */
PurpleProxyType purple_proxy_info_get_proxy_type(const PurpleProxyInfo *info);

/**
 * purple_proxy_info_get_host:
 * @info: The proxy information.
 *
 * Returns the proxy's host.
 *
 * Returns: The host.
 */
const char *purple_proxy_info_get_host(const PurpleProxyInfo *info);

/**
 * purple_proxy_info_get_port:
 * @info: The proxy information.
 *
 * Returns the proxy's port.
 *
 * Returns: The port.
 */
int purple_proxy_info_get_port(const PurpleProxyInfo *info);

/**
 * purple_proxy_info_get_username:
 * @info: The proxy information.
 *
 * Returns the proxy's username.
 *
 * Returns: The username.
 */
const char *purple_proxy_info_get_username(const PurpleProxyInfo *info);

/**
 * purple_proxy_info_get_password:
 * @info: The proxy information.
 *
 * Returns the proxy's password.
 *
 * Returns: The password.
 */
const char *purple_proxy_info_get_password(const PurpleProxyInfo *info);

/**************************************************************************/
/* Global Proxy API                                                       */
/**************************************************************************/

/**
 * purple_global_proxy_get_info:
 *
 * Returns purple's global proxy information.
 *
 * Returns: The global proxy information.
 */
PurpleProxyInfo *purple_global_proxy_get_info(void);

/**
 * purple_global_proxy_set_info:
 * @info:     The proxy information.
 *
 * Set purple's global proxy information.
 */
void purple_global_proxy_set_info(PurpleProxyInfo *info);

/**************************************************************************/
/* Proxy API                                                              */
/**************************************************************************/

/**
 * purple_proxy_get_handle:
 *
 * Returns the proxy subsystem handle.
 *
 * Returns: The proxy subsystem handle.
 */
void *purple_proxy_get_handle(void);

/**
 * purple_proxy_init:
 *
 * Initializes the proxy subsystem.
 */
void purple_proxy_init(void);

/**
 * purple_proxy_uninit:
 *
 * Uninitializes the proxy subsystem.
 */
void purple_proxy_uninit(void);

/**
 * purple_proxy_get_setup:
 * @account: The account for which the configuration is needed.
 *
 * Returns configuration of a proxy.
 *
 * Returns: The configuration of a proxy.
 */
PurpleProxyInfo *purple_proxy_get_setup(PurpleAccount *account);

/**
 * purple_proxy_connect:
 * @handle:     A handle that should be associated with this
 *                   connection attempt.  The handle can be used
 *                   to cancel the connection attempt using the
 *                   purple_proxy_connect_cancel_with_handle()
 *                   function.
 * @account:    The account making the connection.
 * @host:       The destination host.
 * @port:       The destination port.
 * @connect_cb: The function to call when the connection is
 *                   established.  If the connection failed then
 *                   fd will be -1 and error message will be set
 *                   to something descriptive (hopefully).
 * @data:       User-defined data.
 *
 * Makes a connection to the specified host and port.  Note that this
 * function name can be misleading--although it is called "proxy
 * connect," it is used for establishing any outgoing TCP connection,
 * whether through a proxy or not.
 *
 * Returns: NULL if there was an error, or a reference to an
 *         opaque data structure that can be used to cancel
 *         the pending connection, if needed.
 */
PurpleProxyConnectData *purple_proxy_connect(void *handle,
			PurpleAccount *account,
			const char *host, int port,
			PurpleProxyConnectFunction connect_cb, gpointer data);

/**
 * purple_proxy_connect_udp:
 * @handle:     A handle that should be associated with this
 *                   connection attempt.  The handle can be used
 *                   to cancel the connection attempt using the
 *                   purple_proxy_connect_cancel_with_handle()
 *                   function.
 * @account:    The account making the connection.
 * @host:       The destination host.
 * @port:       The destination port.
 * @connect_cb: The function to call when the connection is
 *                   established.  If the connection failed then
 *                   fd will be -1 and error message will be set
 *                   to something descriptive (hopefully).
 * @data:       User-defined data.
 *
 * Makes a connection to the specified host and port.  Note that this
 * function name can be misleading--although it is called "proxy
 * connect," it is used for establishing any outgoing UDP connection,
 * whether through a proxy or not.
 *
 * Returns: NULL if there was an error, or a reference to an
 *         opaque data structure that can be used to cancel
 *         the pending connection, if needed.
 */
PurpleProxyConnectData *purple_proxy_connect_udp(void *handle,
			PurpleAccount *account,
			const char *host, int port,
			PurpleProxyConnectFunction connect_cb, gpointer data);

/**
 * purple_proxy_connect_socks5_account:
 * @handle:     A handle that should be associated with this
 *                   connection attempt.  The handle can be used
 *                   to cancel the connection attempt using the
 *                   purple_proxy_connect_cancel_with_handle()
 *                   function.
 * @account:    The account making the connection.
 * @gpi:        The PurpleProxyInfo specifying the proxy settings
 * @host:       The destination host.
 * @port:       The destination port.
 * @connect_cb: The function to call when the connection is
 *                   established.  If the connection failed then
 *                   fd will be -1 and error message will be set
 *                   to something descriptive (hopefully).
 * @data:       User-defined data.
 *
 * Makes a connection through a SOCKS5 proxy.
 *
 * Note that if the account that is making the connection uses a proxy, this
 * connection to a SOCKS5 proxy will be made through the account proxy.
 *
 * Returns: NULL if there was an error, or a reference to an
 *         opaque data structure that can be used to cancel
 *         the pending connection, if needed.
 */
PurpleProxyConnectData *purple_proxy_connect_socks5_account(void *handle,
			PurpleAccount *account, PurpleProxyInfo *gpi,
			const char *host, int port,
			PurpleProxyConnectFunction connect_cb, gpointer data);

/**
 * purple_proxy_connect_cancel:
 *
 * Cancel an in-progress connection attempt.  This should be called
 * by the protocol if the user disables an account while it is still
 * performing the initial sign on.  Or when establishing a file
 * transfer, if we attempt to connect to a remote user but they
 * are behind a firewall then the protocol can cancel the connection
 * attempt early rather than just letting the OS's TCP/IP stack
 * time-out the connection.
 */
void purple_proxy_connect_cancel(PurpleProxyConnectData *connect_data);

/**
 * purple_proxy_connect_cancel_with_handle:
 * @handle: The handle.
 *
 * Closes all proxy connections registered with the specified handle.
 */
void purple_proxy_connect_cancel_with_handle(void *handle);

G_END_DECLS

#endif /* _PURPLE_PROXY_H_ */