Commit | Line | Data |
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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
3 | * Copyright (C) 2006 Richard Kettlewell | |
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 | */ | |
20 | ||
21 | #include "disobedience.h" | |
22 | ||
23 | /* GSource subclass for disorder_eclient */ | |
24 | struct eclient_source { | |
25 | GSource gsource; | |
26 | disorder_eclient *client; | |
27 | time_t last_poll; | |
28 | GPollFD pollfd; | |
29 | }; | |
30 | ||
31 | /* Called before FDs are polled to choose a timeout. We ask for a 3s | |
32 | * timeout and every 10s or so we force a dispatch. */ | |
33 | static gboolean gtkclient_prepare(GSource *source, | |
34 | gint *timeout) { | |
35 | const struct eclient_source *esource = (struct eclient_source *)source; | |
36 | D(("gtkclient_prepare")); | |
37 | if(time(0) > esource->last_poll + 10) | |
38 | return TRUE; /* timed out */ | |
39 | *timeout = 3000/*milliseconds*/; | |
40 | return FALSE; /* please poll */ | |
41 | } | |
42 | ||
43 | /* Check whether we're ready to dispatch. */ | |
44 | static gboolean gtkclient_check(GSource *source) { | |
45 | const struct eclient_source *esource = (struct eclient_source *)source; | |
46 | D(("gtkclient_check fd=%d events=%x revents=%x", | |
47 | esource->pollfd.fd, esource->pollfd.events, esource->pollfd.revents)); | |
48 | return esource->pollfd.fd != -1 && esource->pollfd.revents != 0; | |
49 | } | |
50 | ||
51 | /* Dispatch */ | |
52 | static gboolean gtkclient_dispatch(GSource *source, | |
53 | GSourceFunc attribute((unused)) callback, | |
54 | gpointer attribute((unused)) user_data) { | |
55 | struct eclient_source *esource = (struct eclient_source *)source; | |
56 | unsigned revents, mode; | |
57 | ||
58 | D(("gtkclient_dispatch")); | |
59 | revents = esource->pollfd.revents & esource->pollfd.events; | |
60 | mode = 0; | |
61 | if(revents & (G_IO_IN|G_IO_HUP|G_IO_ERR)) | |
62 | mode |= DISORDER_POLL_READ; | |
63 | if(revents & (G_IO_OUT|G_IO_HUP|G_IO_ERR)) | |
64 | mode |= DISORDER_POLL_WRITE; | |
65 | time(&esource->last_poll); | |
66 | disorder_eclient_polled(esource->client, mode); | |
67 | return TRUE; /* ??? not documented */ | |
68 | } | |
69 | ||
70 | /* Table of callbacks for GSource subclass */ | |
71 | static const GSourceFuncs sourcefuncs = { | |
72 | gtkclient_prepare, | |
73 | gtkclient_check, | |
74 | gtkclient_dispatch, | |
75 | 0, | |
76 | 0, | |
77 | 0, | |
78 | }; | |
79 | ||
80 | /* Tell the mainloop what we need */ | |
81 | static void gtkclient_poll(void *u, | |
82 | disorder_eclient attribute((unused)) *c, | |
83 | int fd, unsigned mode) { | |
84 | struct eclient_source *esource = u; | |
85 | GSource *source = u; | |
86 | ||
87 | D(("gtkclient_poll fd=%d mode=%x", fd, mode)); | |
88 | /* deconfigure the source if currently configured */ | |
89 | if(esource->pollfd.fd != -1) { | |
90 | D(("calling g_source_remove_poll")); | |
91 | g_source_remove_poll(source, &esource->pollfd); | |
92 | esource->pollfd.fd = -1; | |
93 | esource->pollfd.events = 0; | |
94 | } | |
95 | /* install new settings */ | |
96 | if(fd != -1 && mode) { | |
97 | esource->pollfd.fd = fd; | |
98 | esource->pollfd.events = 0; | |
99 | if(mode & DISORDER_POLL_READ) | |
100 | esource->pollfd.events |= G_IO_IN | G_IO_HUP | G_IO_ERR; | |
101 | if(mode & DISORDER_POLL_WRITE) | |
102 | esource->pollfd.events |= G_IO_OUT | G_IO_ERR; | |
103 | /* reconfigure the source */ | |
104 | D(("calling g_source_add_poll")); | |
105 | g_source_add_poll(source, &esource->pollfd); | |
106 | } | |
107 | } | |
108 | ||
109 | /* Report a communication-level error. It will be automatically retried. */ | |
110 | static void gtkclient_comms_error(void attribute((unused)) *u, | |
111 | const char *msg) { | |
112 | D(("gtkclient_comms_error %s", msg)); | |
113 | gtk_label_set_text(GTK_LABEL(report_label), msg); | |
114 | } | |
115 | ||
116 | /* Report a protocol error. It will not be retried. We offer a callback to | |
117 | * the submitter of the original command and if none is supplied we pop up an | |
118 | * error box. */ | |
119 | static void gtkclient_protocol_error(void attribute((unused)) *u, | |
120 | void *v, | |
121 | int code, | |
122 | const char *msg) { | |
123 | struct callbackdata *cbd = v; | |
124 | ||
125 | D(("gtkclient_protocol_error %s", msg)); | |
126 | if(cbd && cbd->onerror) | |
127 | cbd->onerror(cbd, code, msg); | |
128 | else | |
129 | popup_protocol_error(code, msg); | |
130 | } | |
131 | ||
132 | static void gtkclient_report(void attribute((unused)) *u, | |
133 | const char *msg) { | |
134 | if(!msg) | |
135 | /* We're idle - clear the report line */ | |
136 | gtk_label_set_text(GTK_LABEL(report_label), ""); | |
137 | } | |
138 | ||
139 | void popup_protocol_error(int attribute((unused)) code, | |
140 | const char *msg) { | |
141 | gtk_label_set_text(GTK_LABEL(report_label), msg); | |
142 | popup_error(msg); | |
143 | } | |
144 | ||
145 | /* Table of eclient callbacks */ | |
146 | static const disorder_eclient_callbacks gtkclient_callbacks = { | |
147 | gtkclient_comms_error, | |
148 | gtkclient_protocol_error, | |
149 | gtkclient_poll, | |
150 | gtkclient_report | |
151 | }; | |
152 | ||
153 | /* Create an eclient using the GLib main loop */ | |
154 | disorder_eclient *gtkclient(void) { | |
155 | GSource *source; | |
156 | struct eclient_source *esource; | |
157 | ||
158 | D(("gtkclient")); | |
159 | source = g_source_new((GSourceFuncs *)&sourcefuncs, | |
160 | sizeof (struct eclient_source)); | |
161 | esource = (struct eclient_source *)source; | |
162 | esource->pollfd.fd = -1; | |
163 | esource->client = disorder_eclient_new(>kclient_callbacks, source); | |
1c0d78bd RK |
164 | if(!esource->client) { |
165 | g_source_destroy(source); | |
166 | return 0; | |
167 | } | |
460b9539 | 168 | g_source_attach(source, 0); |
169 | return esource->client; | |
170 | } | |
171 | ||
172 | /* | |
173 | Local Variables: | |
174 | c-basic-offset:2 | |
175 | comment-column:40 | |
176 | fill-column:79 | |
177 | indent-tabs-mode:nil | |
178 | End: | |
179 | */ |