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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
2c348789 | 3 | * Copyright (C) 2006, 2007 Richard Kettlewell |
460b9539 | 4 | * |
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. | |
9 | * | |
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. | |
14 | * | |
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 | |
18 | * USA | |
19 | */ | |
219dc95c RK |
20 | /** @file disobedience/client.c |
21 | * @brief GLIB integration for @ref lib/eclient.c client | |
22 | */ | |
460b9539 | 23 | |
24 | #include "disobedience.h" | |
25 | ||
219dc95c | 26 | /** @brief GSource subclass for disorder_eclient */ |
460b9539 | 27 | struct eclient_source { |
28 | GSource gsource; | |
29 | disorder_eclient *client; | |
30 | time_t last_poll; | |
31 | GPollFD pollfd; | |
32 | }; | |
33 | ||
219dc95c RK |
34 | /** @brief Called before FDs are polled to choose a timeout. |
35 | * | |
36 | * We ask for a 3s timeout and every 10s or so we force a dispatch. | |
37 | */ | |
460b9539 | 38 | static gboolean gtkclient_prepare(GSource *source, |
39 | gint *timeout) { | |
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 */ | |
46 | } | |
47 | ||
219dc95c | 48 | /** @brief Check whether we're ready to dispatch */ |
460b9539 | 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; | |
54 | } | |
55 | ||
219dc95c | 56 | /** @brief Called after poll() (or otherwise) to dispatch an event */ |
460b9539 | 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; | |
62 | ||
63 | D(("gtkclient_dispatch")); | |
64 | revents = esource->pollfd.revents & esource->pollfd.events; | |
65 | mode = 0; | |
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); | |
71 | disorder_eclient_polled(esource->client, mode); | |
72 | return TRUE; /* ??? not documented */ | |
73 | } | |
74 | ||
219dc95c | 75 | /** @brief Table of callbacks for GSource subclass */ |
460b9539 | 76 | static const GSourceFuncs sourcefuncs = { |
77 | gtkclient_prepare, | |
78 | gtkclient_check, | |
79 | gtkclient_dispatch, | |
80 | 0, | |
81 | 0, | |
82 | 0, | |
83 | }; | |
84 | ||
219dc95c | 85 | /** @brief Tell the mainloop what we need */ |
460b9539 | 86 | static void gtkclient_poll(void *u, |
87 | disorder_eclient attribute((unused)) *c, | |
88 | int fd, unsigned mode) { | |
89 | struct eclient_source *esource = u; | |
90 | GSource *source = u; | |
91 | ||
92 | D(("gtkclient_poll fd=%d mode=%x", fd, mode)); | |
93 | /* deconfigure the source if currently configured */ | |
94 | if(esource->pollfd.fd != -1) { | |
95 | D(("calling g_source_remove_poll")); | |
96 | g_source_remove_poll(source, &esource->pollfd); | |
97 | esource->pollfd.fd = -1; | |
98 | esource->pollfd.events = 0; | |
99 | } | |
100 | /* install new settings */ | |
101 | if(fd != -1 && mode) { | |
102 | esource->pollfd.fd = fd; | |
103 | esource->pollfd.events = 0; | |
104 | if(mode & DISORDER_POLL_READ) | |
105 | esource->pollfd.events |= G_IO_IN | G_IO_HUP | G_IO_ERR; | |
106 | if(mode & DISORDER_POLL_WRITE) | |
107 | esource->pollfd.events |= G_IO_OUT | G_IO_ERR; | |
108 | /* reconfigure the source */ | |
109 | D(("calling g_source_add_poll")); | |
110 | g_source_add_poll(source, &esource->pollfd); | |
111 | } | |
112 | } | |
113 | ||
219dc95c RK |
114 | /** @brief Report a communication-level error |
115 | * | |
116 | * Any operations still outstanding are automatically replied by the underlying | |
117 | * @ref lib/eclient.c code. | |
118 | */ | |
460b9539 | 119 | static void gtkclient_comms_error(void attribute((unused)) *u, |
120 | const char *msg) { | |
121 | D(("gtkclient_comms_error %s", msg)); | |
e836b1aa | 122 | menu_update(-1); |
460b9539 | 123 | gtk_label_set_text(GTK_LABEL(report_label), msg); |
124 | } | |
125 | ||
219dc95c RK |
126 | /** @brief Report a protocol-level error |
127 | * | |
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. | |
130 | */ | |
460b9539 | 131 | static void gtkclient_protocol_error(void attribute((unused)) *u, |
132 | void *v, | |
133 | int code, | |
134 | const char *msg) { | |
135 | struct callbackdata *cbd = v; | |
136 | ||
137 | D(("gtkclient_protocol_error %s", msg)); | |
138 | if(cbd && cbd->onerror) | |
139 | cbd->onerror(cbd, code, msg); | |
140 | else | |
141 | popup_protocol_error(code, msg); | |
142 | } | |
143 | ||
219dc95c | 144 | /** @brief Report callback from eclient */ |
460b9539 | 145 | static void gtkclient_report(void attribute((unused)) *u, |
146 | const char *msg) { | |
147 | if(!msg) | |
148 | /* We're idle - clear the report line */ | |
149 | gtk_label_set_text(GTK_LABEL(report_label), ""); | |
e836b1aa | 150 | menu_update(-1); |
460b9539 | 151 | } |
152 | ||
219dc95c | 153 | /** @brief Repoort an unhandled protocol-level error to the user */ |
460b9539 | 154 | void popup_protocol_error(int attribute((unused)) code, |
155 | const char *msg) { | |
156 | gtk_label_set_text(GTK_LABEL(report_label), msg); | |
043d60b1 | 157 | popup_msg(GTK_MESSAGE_ERROR, msg); |
460b9539 | 158 | } |
159 | ||
219dc95c | 160 | /** @brief Table of eclient callbacks */ |
460b9539 | 161 | static const disorder_eclient_callbacks gtkclient_callbacks = { |
162 | gtkclient_comms_error, | |
163 | gtkclient_protocol_error, | |
164 | gtkclient_poll, | |
165 | gtkclient_report | |
166 | }; | |
167 | ||
717ba987 | 168 | /** @brief Create a @ref disorder_eclient using the GLib main loop */ |
460b9539 | 169 | disorder_eclient *gtkclient(void) { |
170 | GSource *source; | |
171 | struct eclient_source *esource; | |
172 | ||
173 | D(("gtkclient")); | |
174 | source = g_source_new((GSourceFuncs *)&sourcefuncs, | |
175 | sizeof (struct eclient_source)); | |
176 | esource = (struct eclient_source *)source; | |
177 | esource->pollfd.fd = -1; | |
178 | esource->client = disorder_eclient_new(>kclient_callbacks, source); | |
1c0d78bd RK |
179 | if(!esource->client) { |
180 | g_source_destroy(source); | |
181 | return 0; | |
182 | } | |
460b9539 | 183 | g_source_attach(source, 0); |
184 | return esource->client; | |
185 | } | |
186 | ||
187 | /* | |
188 | Local Variables: | |
189 | c-basic-offset:2 | |
190 | comment-column:40 | |
191 | fill-column:79 | |
192 | indent-tabs-mode:nil | |
193 | End: | |
194 | */ |