1/* GIO - GLib Input, Output and Streaming Library
2 *
3 * Copyright © 2008 Christian Kellner, Samuel Cormier-Iijima
4 * © 2009 codethink
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General
17 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 *
19 * Authors: Christian Kellner <gicmo@gnome.org>
20 * Samuel Cormier-Iijima <sciyoshi@gmail.com>
21 * Ryan Lortie <desrt@desrt.ca>
22 */
23
24#include "config.h"
25#include "gsocketinputstream.h"
26#include "glibintl.h"
27
28#include "gcancellable.h"
29#include "gpollableinputstream.h"
30#include "gioerror.h"
31#include "gfiledescriptorbased.h"
32
33struct _GSocketInputStreamPrivate
34{
35 GSocket *socket;
36
37 /* pending operation metadata */
38 gpointer buffer;
39 gsize count;
40};
41
42static void g_socket_input_stream_pollable_iface_init (GPollableInputStreamInterface *iface);
43#ifdef G_OS_UNIX
44static void g_socket_input_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface);
45#endif
46
47#define g_socket_input_stream_get_type _g_socket_input_stream_get_type
48
49#ifdef G_OS_UNIX
50G_DEFINE_TYPE_WITH_CODE (GSocketInputStream, g_socket_input_stream, G_TYPE_INPUT_STREAM,
51 G_ADD_PRIVATE (GSocketInputStream)
52 G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_INPUT_STREAM, g_socket_input_stream_pollable_iface_init)
53 G_IMPLEMENT_INTERFACE (G_TYPE_FILE_DESCRIPTOR_BASED, g_socket_input_stream_file_descriptor_based_iface_init)
54 )
55#else
56G_DEFINE_TYPE_WITH_CODE (GSocketInputStream, g_socket_input_stream, G_TYPE_INPUT_STREAM,
57 G_ADD_PRIVATE (GSocketInputStream)
58 G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_INPUT_STREAM, g_socket_input_stream_pollable_iface_init)
59 )
60#endif
61
62enum
63{
64 PROP_0,
65 PROP_SOCKET
66};
67
68static void
69g_socket_input_stream_get_property (GObject *object,
70 guint prop_id,
71 GValue *value,
72 GParamSpec *pspec)
73{
74 GSocketInputStream *stream = G_SOCKET_INPUT_STREAM (object);
75
76 switch (prop_id)
77 {
78 case PROP_SOCKET:
79 g_value_set_object (value, v_object: stream->priv->socket);
80 break;
81
82 default:
83 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
84 }
85}
86
87static void
88g_socket_input_stream_set_property (GObject *object,
89 guint prop_id,
90 const GValue *value,
91 GParamSpec *pspec)
92{
93 GSocketInputStream *stream = G_SOCKET_INPUT_STREAM (object);
94
95 switch (prop_id)
96 {
97 case PROP_SOCKET:
98 stream->priv->socket = g_value_dup_object (value);
99 break;
100
101 default:
102 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
103 }
104}
105
106static void
107g_socket_input_stream_finalize (GObject *object)
108{
109 GSocketInputStream *stream = G_SOCKET_INPUT_STREAM (object);
110
111 if (stream->priv->socket)
112 g_object_unref (object: stream->priv->socket);
113
114 G_OBJECT_CLASS (g_socket_input_stream_parent_class)->finalize (object);
115}
116
117static gssize
118g_socket_input_stream_read (GInputStream *stream,
119 void *buffer,
120 gsize count,
121 GCancellable *cancellable,
122 GError **error)
123{
124 GSocketInputStream *input_stream = G_SOCKET_INPUT_STREAM (stream);
125
126 return g_socket_receive_with_blocking (socket: input_stream->priv->socket,
127 buffer, size: count, TRUE,
128 cancellable, error);
129}
130
131static gboolean
132g_socket_input_stream_pollable_is_readable (GPollableInputStream *pollable)
133{
134 GSocketInputStream *input_stream = G_SOCKET_INPUT_STREAM (pollable);
135
136 return g_socket_condition_check (socket: input_stream->priv->socket, condition: G_IO_IN);
137}
138
139static GSource *
140g_socket_input_stream_pollable_create_source (GPollableInputStream *pollable,
141 GCancellable *cancellable)
142{
143 GSocketInputStream *input_stream = G_SOCKET_INPUT_STREAM (pollable);
144 GSource *socket_source, *pollable_source;
145
146 pollable_source = g_pollable_source_new (G_OBJECT (input_stream));
147 socket_source = g_socket_create_source (socket: input_stream->priv->socket,
148 condition: G_IO_IN, cancellable);
149 g_source_set_dummy_callback (source: socket_source);
150 g_source_add_child_source (source: pollable_source, child_source: socket_source);
151 g_source_unref (source: socket_source);
152
153 return pollable_source;
154}
155
156static gssize
157g_socket_input_stream_pollable_read_nonblocking (GPollableInputStream *pollable,
158 void *buffer,
159 gsize size,
160 GError **error)
161{
162 GSocketInputStream *input_stream = G_SOCKET_INPUT_STREAM (pollable);
163
164 return g_socket_receive_with_blocking (socket: input_stream->priv->socket,
165 buffer, size, FALSE,
166 NULL, error);
167}
168
169#ifdef G_OS_UNIX
170static int
171g_socket_input_stream_get_fd (GFileDescriptorBased *fd_based)
172{
173 GSocketInputStream *input_stream = G_SOCKET_INPUT_STREAM (fd_based);
174
175 return g_socket_get_fd (socket: input_stream->priv->socket);
176}
177#endif
178
179static void
180g_socket_input_stream_class_init (GSocketInputStreamClass *klass)
181{
182 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
183 GInputStreamClass *ginputstream_class = G_INPUT_STREAM_CLASS (klass);
184
185 gobject_class->finalize = g_socket_input_stream_finalize;
186 gobject_class->get_property = g_socket_input_stream_get_property;
187 gobject_class->set_property = g_socket_input_stream_set_property;
188
189 ginputstream_class->read_fn = g_socket_input_stream_read;
190
191 g_object_class_install_property (oclass: gobject_class, property_id: PROP_SOCKET,
192 pspec: g_param_spec_object (name: "socket",
193 P_("socket"),
194 P_("The socket that this stream wraps"),
195 G_TYPE_SOCKET, flags: G_PARAM_CONSTRUCT_ONLY |
196 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
197}
198
199#ifdef G_OS_UNIX
200static void
201g_socket_input_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface)
202{
203 iface->get_fd = g_socket_input_stream_get_fd;
204}
205#endif
206
207static void
208g_socket_input_stream_pollable_iface_init (GPollableInputStreamInterface *iface)
209{
210 iface->is_readable = g_socket_input_stream_pollable_is_readable;
211 iface->create_source = g_socket_input_stream_pollable_create_source;
212 iface->read_nonblocking = g_socket_input_stream_pollable_read_nonblocking;
213}
214
215static void
216g_socket_input_stream_init (GSocketInputStream *stream)
217{
218 stream->priv = g_socket_input_stream_get_instance_private (self: stream);
219}
220
221GSocketInputStream *
222_g_socket_input_stream_new (GSocket *socket)
223{
224 return g_object_new (G_TYPE_SOCKET_INPUT_STREAM, first_property_name: "socket", socket, NULL);
225}
226

source code of gtk/subprojects/glib/gio/gsocketinputstream.c