2 * This file is part of DisOrder.
3 * Copyright (C) 2006, 2007, 2008 Richard Kettlewell
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 /** @file disobedience/client.c
21 * @brief GLIB integration for @ref lib/eclient.c client
24 #include "disobedience.h"
26 /** @brief GSource subclass for disorder_eclient */
27 struct eclient_source {
29 disorder_eclient *client;
34 /** @brief Called before FDs are polled to choose a timeout.
36 * We ask for a 3s timeout and every 10s or so we force a dispatch.
38 static gboolean gtkclient_prepare(GSource *source,
40 const struct eclient_source *esource = (struct eclient_source *)source;
41 D(("gtkclient_prepare"));
42 if(time(0) > esource->last_poll + 10)
43 return TRUE; /* timed out */
44 *timeout = 3000/*milliseconds*/;
45 return FALSE; /* please poll */
48 /** @brief Check whether we're ready to dispatch */
49 static gboolean gtkclient_check(GSource *source) {
50 const struct eclient_source *esource = (struct eclient_source *)source;
51 D(("gtkclient_check fd=%d events=%x revents=%x",
52 esource->pollfd.fd, esource->pollfd.events, esource->pollfd.revents));
53 return esource->pollfd.fd != -1 && esource->pollfd.revents != 0;
56 /** @brief Called after poll() (or otherwise) to dispatch an event */
57 static gboolean gtkclient_dispatch(GSource *source,
58 GSourceFunc attribute((unused)) callback,
59 gpointer attribute((unused)) user_data) {
60 struct eclient_source *esource = (struct eclient_source *)source;
61 unsigned revents, mode;
63 D(("gtkclient_dispatch"));
64 revents = esource->pollfd.revents & esource->pollfd.events;
66 if(revents & (G_IO_IN|G_IO_HUP|G_IO_ERR))
67 mode |= DISORDER_POLL_READ;
68 if(revents & (G_IO_OUT|G_IO_HUP|G_IO_ERR))
69 mode |= DISORDER_POLL_WRITE;
70 time(&esource->last_poll);
72 disorder_eclient_polled(esource->client, mode);
73 return TRUE; /* ??? not documented */
76 /** @brief Table of callbacks for GSource subclass */
77 static const GSourceFuncs sourcefuncs = {
86 /** @brief Tell the mainloop what we need */
87 static void gtkclient_poll(void *u,
88 disorder_eclient attribute((unused)) *c,
89 int fd, unsigned mode) {
90 struct eclient_source *esource = u;
93 D(("gtkclient_poll fd=%d mode=%x", fd, mode));
94 /* deconfigure the source if currently configured */
95 if(esource->pollfd.fd != -1) {
96 D(("calling g_source_remove_poll"));
97 g_source_remove_poll(source, &esource->pollfd);
98 esource->pollfd.fd = -1;
99 esource->pollfd.events = 0;
101 /* install new settings */
102 if(fd != -1 && mode) {
103 esource->pollfd.fd = fd;
104 esource->pollfd.events = 0;
105 if(mode & DISORDER_POLL_READ)
106 esource->pollfd.events |= G_IO_IN | G_IO_HUP | G_IO_ERR;
107 if(mode & DISORDER_POLL_WRITE)
108 esource->pollfd.events |= G_IO_OUT | G_IO_ERR;
109 /* reconfigure the source */
110 D(("calling g_source_add_poll"));
111 g_source_add_poll(source, &esource->pollfd);
115 /** @brief Report a communication-level error
117 * Any operations still outstanding are automatically replied by the underlying
118 * @ref lib/eclient.c code.
120 static void gtkclient_comms_error(void attribute((unused)) *u,
122 D(("gtkclient_comms_error %s", msg));
123 gtk_label_set_text(GTK_LABEL(report_label), msg);
126 /** @brief Report a protocol-level error
128 * The error will not be retried. We offer a callback to the submitter of the
129 * original command and if none is supplied we pop up an error box.
131 static void gtkclient_protocol_error(void attribute((unused)) *u,
132 void attribute((unused)) *v,
135 D(("gtkclient_protocol_error %s", msg));
136 popup_protocol_error(code, msg);
139 /** @brief Report callback from eclient */
140 static void gtkclient_report(void attribute((unused)) *u,
143 /* We're idle - clear the report line */
144 gtk_label_set_text(GTK_LABEL(report_label), "");
147 /** @brief Repoort an unhandled protocol-level error to the user */
148 void popup_protocol_error(int attribute((unused)) code,
150 gtk_label_set_text(GTK_LABEL(report_label), msg);
151 popup_msg(GTK_MESSAGE_ERROR, msg);
154 /** @brief Table of eclient callbacks */
155 static const disorder_eclient_callbacks gtkclient_callbacks = {
156 gtkclient_comms_error,
157 gtkclient_protocol_error,
162 /** @brief Create a @ref disorder_eclient using the GLib main loop */
163 disorder_eclient *gtkclient(void) {
165 struct eclient_source *esource;
168 source = g_source_new((GSourceFuncs *)&sourcefuncs,
169 sizeof (struct eclient_source));
170 esource = (struct eclient_source *)source;
171 esource->pollfd.fd = -1;
172 esource->client = disorder_eclient_new(>kclient_callbacks, source);
173 if(!esource->client) {
174 g_source_destroy(source);
177 g_source_attach(source, 0);
178 return esource->client;