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1 office 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 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 "goutputstream.h"
26 #include "gsocketoutputstream.h"
27 #include "gsocket.h"
28 #include "glibintl.h"
29  
30 #include "gcancellable.h"
31 #include "gpollableinputstream.h"
32 #include "gpollableoutputstream.h"
33 #include "gioerror.h"
34 #include "glibintl.h"
35 #include "gfiledescriptorbased.h"
36  
37 struct _GSocketOutputStreamPrivate
38 {
39 GSocket *socket;
40  
41 /* pending operation metadata */
42 gconstpointer buffer;
43 gsize count;
44 };
45  
46 static void g_socket_output_stream_pollable_iface_init (GPollableOutputStreamInterface *iface);
47 #ifdef G_OS_UNIX
48 static void g_socket_output_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface);
49 #endif
50  
51 #define g_socket_output_stream_get_type _g_socket_output_stream_get_type
52  
53 #ifdef G_OS_UNIX
54 G_DEFINE_TYPE_WITH_CODE (GSocketOutputStream, g_socket_output_stream, G_TYPE_OUTPUT_STREAM,
55 G_ADD_PRIVATE (GSocketOutputStream)
56 G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_OUTPUT_STREAM, g_socket_output_stream_pollable_iface_init)
57 G_IMPLEMENT_INTERFACE (G_TYPE_FILE_DESCRIPTOR_BASED, g_socket_output_stream_file_descriptor_based_iface_init)
58 )
59 #else
60 G_DEFINE_TYPE_WITH_CODE (GSocketOutputStream, g_socket_output_stream, G_TYPE_OUTPUT_STREAM,
61 G_ADD_PRIVATE (GSocketOutputStream)
62 G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_OUTPUT_STREAM, g_socket_output_stream_pollable_iface_init)
63 )
64 #endif
65  
66 enum
67 {
68 PROP_0,
69 PROP_SOCKET
70 };
71  
72 static void
73 g_socket_output_stream_get_property (GObject *object,
74 guint prop_id,
75 GValue *value,
76 GParamSpec *pspec)
77 {
78 GSocketOutputStream *stream = G_SOCKET_OUTPUT_STREAM (object);
79  
80 switch (prop_id)
81 {
82 case PROP_SOCKET:
83 g_value_set_object (value, stream->priv->socket);
84 break;
85  
86 default:
87 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
88 }
89 }
90  
91 static void
92 g_socket_output_stream_set_property (GObject *object,
93 guint prop_id,
94 const GValue *value,
95 GParamSpec *pspec)
96 {
97 GSocketOutputStream *stream = G_SOCKET_OUTPUT_STREAM (object);
98  
99 switch (prop_id)
100 {
101 case PROP_SOCKET:
102 stream->priv->socket = g_value_dup_object (value);
103 break;
104  
105 default:
106 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
107 }
108 }
109  
110 static void
111 g_socket_output_stream_finalize (GObject *object)
112 {
113 GSocketOutputStream *stream = G_SOCKET_OUTPUT_STREAM (object);
114  
115 if (stream->priv->socket)
116 g_object_unref (stream->priv->socket);
117  
118 G_OBJECT_CLASS (g_socket_output_stream_parent_class)->finalize (object);
119 }
120  
121 static gssize
122 g_socket_output_stream_write (GOutputStream *stream,
123 const void *buffer,
124 gsize count,
125 GCancellable *cancellable,
126 GError **error)
127 {
128 GSocketOutputStream *onput_stream = G_SOCKET_OUTPUT_STREAM (stream);
129  
130 return g_socket_send_with_blocking (onput_stream->priv->socket,
131 buffer, count, TRUE,
132 cancellable, error);
133 }
134  
135 static gboolean
136 g_socket_output_stream_pollable_is_writable (GPollableOutputStream *pollable)
137 {
138 GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (pollable);
139  
140 return g_socket_condition_check (output_stream->priv->socket, G_IO_OUT);
141 }
142  
143 static gssize
144 g_socket_output_stream_pollable_write_nonblocking (GPollableOutputStream *pollable,
145 const void *buffer,
146 gsize size,
147 GError **error)
148 {
149 GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (pollable);
150  
151 return g_socket_send_with_blocking (output_stream->priv->socket,
152 buffer, size, FALSE,
153 NULL, error);
154 }
155  
156 static GSource *
157 g_socket_output_stream_pollable_create_source (GPollableOutputStream *pollable,
158 GCancellable *cancellable)
159 {
160 GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (pollable);
161 GSource *socket_source, *pollable_source;
162  
163 pollable_source = g_pollable_source_new (G_OBJECT (output_stream));
164 socket_source = g_socket_create_source (output_stream->priv->socket,
165 G_IO_OUT, cancellable);
166 g_source_set_dummy_callback (socket_source);
167 g_source_add_child_source (pollable_source, socket_source);
168 g_source_unref (socket_source);
169  
170 return pollable_source;
171 }
172  
173 #ifdef G_OS_UNIX
174 static int
175 g_socket_output_stream_get_fd (GFileDescriptorBased *fd_based)
176 {
177 GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (fd_based);
178  
179 return g_socket_get_fd (output_stream->priv->socket);
180 }
181 #endif
182  
183 static void
184 g_socket_output_stream_class_init (GSocketOutputStreamClass *klass)
185 {
186 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
187 GOutputStreamClass *goutputstream_class = G_OUTPUT_STREAM_CLASS (klass);
188  
189 gobject_class->finalize = g_socket_output_stream_finalize;
190 gobject_class->get_property = g_socket_output_stream_get_property;
191 gobject_class->set_property = g_socket_output_stream_set_property;
192  
193 goutputstream_class->write_fn = g_socket_output_stream_write;
194  
195 g_object_class_install_property (gobject_class, PROP_SOCKET,
196 g_param_spec_object ("socket",
197 P_("socket"),
198 P_("The socket that this stream wraps"),
199 G_TYPE_SOCKET, G_PARAM_CONSTRUCT_ONLY |
200 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
201 }
202  
203 #ifdef G_OS_UNIX
204 static void
205 g_socket_output_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface)
206 {
207 iface->get_fd = g_socket_output_stream_get_fd;
208 }
209 #endif
210  
211 static void
212 g_socket_output_stream_pollable_iface_init (GPollableOutputStreamInterface *iface)
213 {
214 iface->is_writable = g_socket_output_stream_pollable_is_writable;
215 iface->create_source = g_socket_output_stream_pollable_create_source;
216 iface->write_nonblocking = g_socket_output_stream_pollable_write_nonblocking;
217 }
218  
219 static void
220 g_socket_output_stream_init (GSocketOutputStream *stream)
221 {
222 stream->priv = g_socket_output_stream_get_instance_private (stream);
223 }
224  
225 GSocketOutputStream *
226 _g_socket_output_stream_new (GSocket *socket)
227 {
228 return g_object_new (G_TYPE_SOCKET_OUTPUT_STREAM, "socket", socket, NULL);
229 }