1 /* GIO - GLib Input, Output and Streaming Library
3 * Copyright (C) 2010 Collabora Ltd.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
18 * Boston, MA 02111-1307, USA.
20 * Author: Nicolas Dufresne <nicolas.dufresne@collabora.co.uk>
27 #include "giomodule.h"
28 #include "giomodule-priv.h"
33 * @short_description: Interface for proxy handling
35 * A #GProxy handles connecting to a remote host via a given type of
36 * proxy server. It is implemented by the 'gio-proxy' extension point.
37 * The extensions are named after their proxy protocol name. As an
38 * example, a SOCKS5 proxy implementation can be retrieved with the
39 * name 'socks5' using the function
40 * g_io_extension_point_get_extension_by_name().
45 G_DEFINE_INTERFACE (GProxy, g_proxy, G_TYPE_OBJECT)
48 g_proxy_default_init (GProxyInterface *iface)
53 * g_proxy_get_default_for_protocol:
54 * @protocol: the proxy protocol name (e.g. http, socks, etc)
56 * Lookup "gio-proxy" extension point for a proxy implementation that supports
59 * Return value: (transfer full): return a #GProxy or NULL if protocol
65 g_proxy_get_default_for_protocol (const gchar *protocol)
67 GIOExtensionPoint *ep;
68 GIOExtension *extension;
70 /* Ensure proxy modules loaded */
71 _g_io_modules_ensure_loaded ();
73 ep = g_io_extension_point_lookup (G_PROXY_EXTENSION_POINT_NAME);
75 extension = g_io_extension_point_get_extension_by_name (ep, protocol);
78 return g_object_new (g_io_extension_get_type (extension), NULL);
86 * @connection: a #GIOStream
87 * @proxy_address: a #GProxyAddress
88 * @cancellable: (allow-none): a #GCancellable
89 * @error: return #GError
91 * Given @connection to communicate with a proxy (eg, a
92 * #GSocketConnection that is connected to the proxy server), this
93 * does the necessary handshake to connect to @proxy_address, and if
94 * required, wraps the #GIOStream to handle proxy payload.
96 * Return value: (transfer full): a #GIOStream that will replace @connection. This might
97 * be the same as @connection, in which case a reference
103 g_proxy_connect (GProxy *proxy,
104 GIOStream *connection,
105 GProxyAddress *proxy_address,
106 GCancellable *cancellable,
109 GProxyInterface *iface;
111 g_return_val_if_fail (G_IS_PROXY (proxy), NULL);
113 iface = G_PROXY_GET_IFACE (proxy);
115 return (* iface->connect) (proxy,
123 * g_proxy_connect_async:
125 * @connection: a #GIOStream
126 * @proxy_address: a #GProxyAddress
127 * @cancellable: (allow-none): a #GCancellable
128 * @callback: (scope async): a #GAsyncReadyCallback
129 * @user_data: (closure): callback data
131 * Asynchronous version of g_proxy_connect().
136 g_proxy_connect_async (GProxy *proxy,
137 GIOStream *connection,
138 GProxyAddress *proxy_address,
139 GCancellable *cancellable,
140 GAsyncReadyCallback callback,
143 GProxyInterface *iface;
145 g_return_if_fail (G_IS_PROXY (proxy));
147 iface = G_PROXY_GET_IFACE (proxy);
149 (* iface->connect_async) (proxy,
158 * g_proxy_connect_finish:
160 * @result: a #GAsyncResult
161 * @error: return #GError
163 * See g_proxy_connect().
165 * Return value: (transfer full): a #GIOStream.
170 g_proxy_connect_finish (GProxy *proxy,
171 GAsyncResult *result,
174 GProxyInterface *iface;
176 g_return_val_if_fail (G_IS_PROXY (proxy), NULL);
178 iface = G_PROXY_GET_IFACE (proxy);
180 return (* iface->connect_finish) (proxy, result, error);
184 * g_proxy_supports_hostname:
187 * Some proxy protocols expect to be passed a hostname, which they
188 * will resolve to an IP address themselves. Others, like SOCKS4, do
189 * not allow this. This function will return %FALSE if @proxy is
190 * implementing such a protocol. When %FALSE is returned, the caller
191 * should resolve the destination hostname first, and then pass a
192 * #GProxyAddress containing the stringified IP address to
193 * g_proxy_connect() or g_proxy_connect_async().
195 * Return value: %TRUE if hostname resolution is supported.
200 g_proxy_supports_hostname (GProxy *proxy)
202 GProxyInterface *iface;
204 g_return_val_if_fail (G_IS_PROXY (proxy), FALSE);
206 iface = G_PROXY_GET_IFACE (proxy);
208 return (* iface->supports_hostname) (proxy);