1 /*
2 * ga-client.c - Source for GaClient
3 * Copyright (C) 2006-2007 Collabora Ltd.
4 *
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 2.1 of the License, or (at your option) any later version.
9 *
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.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23
24 #include <stdio.h>
25 #include <stdlib.h>
26
27 #include "ga-client.h"
28
29 #include "ga-client-enumtypes.h"
30 #include "ga-error.h"
31
32 /* FIXME what to do about glib-malloc ? */
33 #include <avahi-glib/glib-watch.h>
34 #include <avahi-glib/glib-malloc.h>
35 #include <avahi-common/error.h>
36 #include <avahi-common/timeval.h>
37
38 G_DEFINE_TYPE(GaClient, ga_client, G_TYPE_OBJECT)
39
40 /* signal enum */
41 enum {
42 STATE_CHANGED,
43 LAST_SIGNAL
44 };
45
46 static guint signals[LAST_SIGNAL] = { 0 };
47
48 /* properties */
49 enum {
50 PROP_STATE = 1,
51 PROP_FLAGS
52 };
53
54 /* private structure */
55 typedef struct _GaClientPrivate GaClientPrivate;
56
57 struct _GaClientPrivate {
58 AvahiGLibPoll *poll;
59 GaClientFlags flags;
60 GaClientState state;
61 gboolean dispose_has_run;
62 };
63
64 #define GA_CLIENT_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GA_TYPE_CLIENT, GaClientPrivate))
65
ga_client_init(GaClient * self)66 static void ga_client_init(GaClient * self) {
67 GaClientPrivate *priv = GA_CLIENT_GET_PRIVATE(self);
68 /* allocate any data required by the object here */
69 self->avahi_client = NULL;
70 priv->state = GA_CLIENT_STATE_NOT_STARTED;
71 priv->flags = GA_CLIENT_FLAG_NO_FLAGS;
72 }
73
74 static void ga_client_dispose(GObject * object);
75 static void ga_client_finalize(GObject * object);
76
ga_client_set_property(GObject * object,guint property_id,const GValue * value,GParamSpec * pspec)77 static void ga_client_set_property(GObject * object,
78 guint property_id,
79 const GValue * value, GParamSpec * pspec) {
80 GaClient *client = GA_CLIENT(object);
81 GaClientPrivate *priv = GA_CLIENT_GET_PRIVATE(client);
82
83 switch (property_id) {
84 case PROP_FLAGS:
85 g_assert(client->avahi_client == NULL);
86 priv->flags = g_value_get_enum(value);
87 break;
88 default:
89 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
90 break;
91 }
92 }
93
ga_client_get_property(GObject * object,guint property_id,GValue * value,GParamSpec * pspec)94 static void ga_client_get_property(GObject * object,
95 guint property_id,
96 GValue * value, GParamSpec * pspec) {
97 GaClient *client = GA_CLIENT(object);
98 GaClientPrivate *priv = GA_CLIENT_GET_PRIVATE(client);
99
100 switch (property_id) {
101 case PROP_STATE:
102 g_value_set_enum(value, priv->state);
103 break;
104 case PROP_FLAGS:
105 g_value_set_enum(value, priv->flags);
106 default:
107 G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
108 break;
109 }
110 }
111
ga_client_class_init(GaClientClass * ga_client_class)112 static void ga_client_class_init(GaClientClass * ga_client_class) {
113 GObjectClass *object_class = G_OBJECT_CLASS(ga_client_class);
114 GParamSpec *param_spec;
115
116 g_type_class_add_private(ga_client_class, sizeof (GaClientPrivate));
117
118
119 object_class->dispose = ga_client_dispose;
120 object_class->finalize = ga_client_finalize;
121
122 object_class->set_property = ga_client_set_property;
123 object_class->get_property = ga_client_get_property;
124
125 param_spec = g_param_spec_enum("state", "Client state",
126 "The state of the Avahi client",
127 GA_TYPE_CLIENT_STATE,
128 GA_CLIENT_STATE_NOT_STARTED,
129 G_PARAM_READABLE |
130 G_PARAM_STATIC_NAME |
131 G_PARAM_STATIC_BLURB);
132 g_object_class_install_property(object_class, PROP_STATE, param_spec);
133
134 param_spec = g_param_spec_enum("flags", "Client flags",
135 "The flags the Avahi client is started with",
136 GA_TYPE_CLIENT_FLAGS,
137 GA_CLIENT_FLAG_NO_FLAGS,
138 G_PARAM_READWRITE |
139 G_PARAM_CONSTRUCT_ONLY |
140 G_PARAM_STATIC_NAME |
141 G_PARAM_STATIC_BLURB);
142 g_object_class_install_property(object_class, PROP_FLAGS, param_spec);
143
144 signals[STATE_CHANGED] =
145 g_signal_new("state-changed",
146 G_OBJECT_CLASS_TYPE(ga_client_class),
147 G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
148 0,
149 NULL, NULL,
150 g_cclosure_marshal_VOID__ENUM,
151 G_TYPE_NONE, 1, GA_TYPE_CLIENT_STATE);
152
153 }
154
ga_client_dispose(GObject * object)155 void ga_client_dispose(GObject * object) {
156 GaClient *self = GA_CLIENT(object);
157 GaClientPrivate *priv = GA_CLIENT_GET_PRIVATE(self);
158
159 if (priv->dispose_has_run)
160 return;
161
162 priv->dispose_has_run = TRUE;
163
164 if (self->avahi_client) {
165 avahi_client_free(self->avahi_client);
166 self->avahi_client = NULL;
167 }
168 if (priv->poll) {
169 avahi_glib_poll_free(priv->poll);
170 priv->poll = NULL;
171 }
172
173 /* release any references held by the object here */
174 if (G_OBJECT_CLASS(ga_client_parent_class)->dispose)
175 G_OBJECT_CLASS(ga_client_parent_class)->dispose(object);
176 }
177
ga_client_finalize(GObject * object)178 void ga_client_finalize(GObject * object) {
179
180 /* free any data held directly by the object here */
181 G_OBJECT_CLASS(ga_client_parent_class)->finalize(object);
182 }
183
ga_client_new(GaClientFlags flags)184 GaClient *ga_client_new(GaClientFlags flags) {
185 return g_object_new(GA_TYPE_CLIENT, "flags", flags, NULL);
186 }
187
detail_for_state(AvahiClientState state)188 static GQuark detail_for_state(AvahiClientState state) {
189 static struct {
190 AvahiClientState state;
191 const gchar *name;
192 GQuark quark;
193 } states[] = {
194 { AVAHI_CLIENT_S_REGISTERING, "registering", 0},
195 { AVAHI_CLIENT_S_RUNNING, "running", 0},
196 { AVAHI_CLIENT_S_COLLISION, "collistion", 0},
197 { AVAHI_CLIENT_FAILURE, "failure", 0},
198 { AVAHI_CLIENT_CONNECTING, "connecting", 0},
199 { 0, NULL, 0}
200 };
201 int i;
202
203 for (i = 0; states[i].name != NULL; i++) {
204 if (state != states[i].state)
205 continue;
206
207 if (!states[i].quark)
208 states[i].quark = g_quark_from_static_string(states[i].name);
209 /* printf("Detail: %s\n", states[i].name); */
210 return states[i].quark;
211 }
212 g_assert_not_reached();
213 }
214
_avahi_client_cb(AvahiClient * c,AvahiClientState state,void * data)215 static void _avahi_client_cb(AvahiClient * c, AvahiClientState state, void *data) {
216 GaClient *self = GA_CLIENT(data);
217 GaClientPrivate *priv = GA_CLIENT_GET_PRIVATE(self);
218
219 /* printf("CLIENT CB: %d\n", state); */
220
221 /* Avahi can call the callback before return from _client_new */
222 if (self->avahi_client == NULL)
223 self->avahi_client = c;
224
225 g_assert(c == self->avahi_client);
226 priv->state = state;
227 g_signal_emit(self, signals[STATE_CHANGED],
228 detail_for_state(state), state);
229 }
230
ga_client_start(GaClient * client,GError ** error)231 gboolean ga_client_start(GaClient * client, GError ** error) {
232 GaClientPrivate *priv = GA_CLIENT_GET_PRIVATE(client);
233 AvahiClient *aclient;
234 int aerror;
235
236 g_assert(client->avahi_client == NULL);
237 g_assert(priv->poll == NULL);
238
239 avahi_set_allocator(avahi_glib_allocator());
240
241 priv->poll = avahi_glib_poll_new(NULL, G_PRIORITY_DEFAULT);
242
243 aclient = avahi_client_new(avahi_glib_poll_get(priv->poll),
244 priv->flags,
245 _avahi_client_cb, client, &aerror);
246 if (aclient == NULL) {
247 if (error != NULL) {
248 *error = g_error_new(GA_ERROR, aerror,
249 "Failed to create avahi client: %s",
250 avahi_strerror(aerror));
251 }
252 return FALSE;
253 }
254 client->avahi_client = aclient;
255 return TRUE;
256 }
257