finch/plugins/gntclipboard.c

   1 /**
   2  * Copyright (C) 2007 Richard Nelson <wabz@whatsbeef.net>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
  17  */
  18
  19 #include "internal.h"
  20 #include <glib.h>
  21
  22 #define PLUGIN_ID           "gntclipboard"
  23 #define PLUGIN_DOMAIN       (g_quark_from_static_string(PLUGIN_ID))
  24 #define PLUGIN_STATIC_NAME  GntClipboard
  25
  26 #ifdef HAVE_X11
  27 #include <X11/Xlib.h>
  28 #include <X11/Xutil.h>
  29 #include <X11/Xatom.h>
  30 #endif
  31
  32 #include <sys/types.h>
  33 #include <signal.h>
  34
  35 #include <glib.h>
  36
  37 #include <plugins.h>
  38 #include <version.h>
  39 #include <debug.h>
  40 #include <notify.h>
  41 #include <gnt.h>
  42 #include <gntwm.h>
  43
  44 #include <gntplugin.h>
  45
  46 #ifdef HAVE_X11
  47 static pid_t child = 0;
  48
  49 static gulong sig_handle;
  50
  51 static void
  52 set_clip(gchar *string)
  53 {
  54         Window w;
  55         XEvent e, respond;
  56         XSelectionRequestEvent *req;
  57         const char *ids;
  58         Display *dpy = XOpenDisplay(NULL);
  59
  60         if (!dpy)
  61                 return;
  62         ids = getenv("WINDOWID");
  63         if (ids == NULL)
  64                 return;
  65         w = atoi(ids);
  66         XSetSelectionOwner(dpy, XA_PRIMARY, w, CurrentTime);
  67         XFlush(dpy);
  68         XSelectInput(dpy, w, StructureNotifyMask);
  69         while (TRUE) {
  70                 XNextEvent(dpy, &e); /* this blocks. */
  71                 req = &e.xselectionrequest;
  72                 if (e.type == SelectionRequest) {
  73                         XChangeProperty(dpy,
  74                                 req->requestor,
  75                                 req->property,
  76                                 XA_STRING,
  77                                 8, PropModeReplace,
  78                                 (unsigned char *)string,
  79                                 strlen(string));
  80                         respond.xselection.property = req->property;
  81                         respond.xselection.type = SelectionNotify;
  82                         respond.xselection.display = req->display;
  83                         respond.xselection.requestor = req->requestor;
  84                         respond.xselection.selection = req->selection;
  85                         respond.xselection.target= req->target;
  86                         respond.xselection.time = req->time;
  87                         XSendEvent(dpy, req->requestor, 0, 0, &respond);
  88                         XFlush (dpy);
  89                 } else if (e.type == SelectionClear) {
  90                         return;
  91                 }
  92         }
  93         return;
  94 }
  95
  96 static void
  97 clipboard_changed(GntWM *wm, gchar *string)
  98 {
  99         if (child) {
 100                 kill(child, SIGTERM);
 101         }
 102         if ((child = fork()) == 0) {
 103                 set_clip(string);
 104                 _exit(0);
 105         }
 106 }
 107 #endif
 108
 109 static FinchPluginInfo *
 110 plugin_query(GError **error)
 111 {
 112         const gchar * const authors[] = {
 113                 "Richard Nelson <wabz@whatsbeef.net>",
 114                 NULL
 115         };
 116
 117         return finch_plugin_info_new(
 118                 "id",           PLUGIN_ID,
 119                 "name",         N_("GntClipboard"),
 120                 "version",      DISPLAY_VERSION,
 121                 "category",     N_("Utility"),
 122                 "summary",      N_("Clipboard plugin"),
 123                 "description",  N_("When the gnt clipboard contents change, the "
 124                                    "contents are made available to X, if possible."),
 125                 "authors",      authors,
 126                 "website",      PURPLE_WEBSITE,
 127                 "abi-version",  PURPLE_ABI_VERSION,
 128                 NULL
 129         );
 130 }
 131
 132 static gboolean
 133 plugin_load(PurplePlugin *plugin, GError **error)
 134 {
 135 #ifdef HAVE_X11
 136         if (!XOpenDisplay(NULL)) {
 137                 purple_debug_warning("gntclipboard", "Couldn't find X display\n");
 138                 purple_notify_error(NULL, _("Error"), _("Error loading the plugin."),
 139                                 _("Couldn't find X display"), NULL);
 140                 return FALSE;
 141         }
 142         if (!getenv("WINDOWID")) {
 143                 purple_debug_warning("gntclipboard", "Couldn't find window\n");
 144                 purple_notify_error(NULL, _("Error"), _("Error loading the plugin."),
 145                                 _("Couldn't find window"), NULL);
 146                 return FALSE;
 147         }
 148         sig_handle = g_signal_connect(G_OBJECT(gnt_get_clipboard()), "clipboard_changed", G_CALLBACK(clipboard_changed), NULL);
 149         return TRUE;
 150 #else
 151         g_set_error(error, PLUGIN_DOMAIN, 0, _("This plugin cannot be loaded "
 152                         "because it was not built with X11 support."));
 153         return FALSE;
 154 #endif
 155 }
 156
 157 static gboolean
 158 plugin_unload(PurplePlugin *plugin, GError **error)
 159 {
 160 #ifdef HAVE_X11
 161         if (child) {
 162                 kill(child, SIGTERM);
 163                 child = 0;
 164         }
 165         g_signal_handler_disconnect(G_OBJECT(gnt_get_clipboard()), sig_handle);
 166 #endif
 167         return TRUE;
 168 }
 169
 170 PURPLE_PLUGIN_INIT(PLUGIN_STATIC_NAME, plugin_query, plugin_load, plugin_unload);