src/ui-gnome.c

   1 /* $Id$
   2  * Gnome user interface
   3  * Copyright (C) 2004 Jan Kratochvil <project-udpgate@jankratochvil.net>
   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; exactly version 2 of June 1991 is required
   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19
  20 #include "config.h"
  21
  22 #include "ui-gnome.h"   /* self */
  23 #include <glib/gmessages.h>
  24 #include "main.h"
  25 #include <libgnomeui/gnome-app.h>
  26 #include <sys/types.h>
  27 #include <signal.h>
  28 #include <stdio.h>
  29 #include <errno.h>
  30 #include <libgnomeui/gnome-appbar.h>
  31 #include <gtk/gtkbutton.h>
  32 #include <unistd.h>
  33 #include <stdlib.h>
  34 #include <gtk/gtkentry.h>
  35 #include <gtk/gtktogglebutton.h>
  36 #include <string.h>
  37 #include <gtk/gtkmain.h>
  38 #include <libgnomeui/gnome-app-util.h>
  39 #include <gtk/gtklabel.h>
  40 #include <gtk/gtkcheckbutton.h>
  41
  42 #include "network.h"
  43 #include "packet.h"
  44 #include "startup.h"
  45
  46
  47 /* Config: */
  48 #define DAEMON_CHECK_INTERVAL_MS 100
  49 #define EXTERNAL_STARTUP_CHECK_INTERVAL_MS 1000
  50 #define PORT_RANGE_BEGIN 2048
  51 #define PORT_RANGE_END 10240
  52 #define UI_GNOME_PROBE_TIMEOUT_SEC 10
  53
  54
  55 static GnomeApp *App;
  56 static GtkButton *ButtonStart;
  57 static GtkButton *ButtonStop;
  58 static GtkHBox *PortHBox;
  59 static GnomeAppBar *AppBar;
  60 static GtkEntry *PortEntry;
  61 static GtkEntry *HostIPEntry;
  62 static GtkLabel *AutostartLabel;
  63 static GtkCheckButton *AutostartCheckButton;
  64
  65
  66 static void state_start_stop(void)
  67 {
  68 pid_t daemon_pid;
  69 gboolean daemon_running;
  70 static gboolean last_daemon_running,last_daemon_running_set=FALSE;
  71
  72         daemon_pid=is_daemon_running();
  73         daemon_running=((pid_t)-1!=daemon_pid);
  74
  75         /* Cache the result; maybe not needed. */
  76         if (last_daemon_running_set && last_daemon_running==daemon_running)
  77                 return;
  78         last_daemon_running=daemon_running;
  79         last_daemon_running_set=TRUE;
  80
  81         gtk_widget_set_sensitive(GTK_WIDGET(ButtonStart),!daemon_running);
  82         gtk_widget_set_sensitive(GTK_WIDGET(ButtonStop) , daemon_running);
  83         gtk_widget_set_sensitive(GTK_WIDGET(PortHBox)   ,!daemon_running);
  84         if (daemon_running)
  85                 gnome_appbar_set_status(AppBar,
  86                                 udpgate_printf_alloca(_("udpgate daemon running as PID %d."),(int)daemon_pid));
  87         else
  88                 gnome_appbar_set_status(AppBar,_("No udpgate daemon currently running."));
  89 }
  90
  91 static gboolean daemon_check_timeout_func(gpointer data /* unused */)
  92 {
  93         if (!App)       /* Quitting? */
  94                 return FALSE;   /* stop running */
  95
  96         state_start_stop();
  97         return TRUE;    /* continue running */
  98 }
  99
 100 static gboolean external_startup_check_timeout_func(gpointer data /* unused */)
 101 {
 102 gboolean state_startup_is_on;
 103
 104         if (!App)       /* Quitting? */
 105                 return FALSE;   /* stop running */
 106
 107         if (startup_query(&state_startup_is_on))
 108                 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(AutostartCheckButton),state_startup_is_on);
 109         return TRUE;    /* continue running */
 110 }
 111
 112 void on_PortButtonRandom_clicked(GtkButton *button,gpointer user_data)
 113 {
 114         g_return_if_fail(GTK_IS_BUTTON(button));
 115
 116         state_start_stop();
 117         if ((pid_t)-1!=is_daemon_running())
 118                 return;
 119         gtk_entry_set_text(PortEntry,
 120                         udpgate_printf_alloca("%d",(int)g_random_int_range(PORT_RANGE_BEGIN,PORT_RANGE_END)));
 121 }
 122
 123 void on_AutostartCheckButton_toggled(GtkToggleButton *togglebutton,gpointer user_data)
 124 {
 125 static gint inside=0;
 126
 127         g_return_if_fail(GTK_IS_TOGGLE_BUTTON(togglebutton));
 128
 129         /* Avoid reentrancy to prevent segfault during failed registration.
 130          * FIXME: Who knows why? Some forbidden GTK recursion occurs.
 131          */
 132         g_assert(inside>=0);
 133         if (inside)
 134                 return;
 135         inside++;
 136
 137         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(AutostartCheckButton)))
 138                 startup_on();
 139         else
 140                 startup_off();
 141         external_startup_check_timeout_func(NULL);      /* data; unused */
 142
 143         g_assert(inside==1);
 144         inside--;
 145 }
 146
 147 void on_ButtonStart_clicked(GtkButton *button,gpointer user_data)
 148 {
 149         g_return_if_fail(GTK_IS_BUTTON(button));
 150
 151         if (!optarg_port_set_string(gtk_entry_get_text(PortEntry)))
 152                 return;
 153         network_start(optarg_port);
 154 }
 155
 156 void on_ButtonStop_clicked(GtkButton *button,gpointer user_data)
 157 {
 158         g_return_if_fail(GTK_IS_BUTTON(button));
 159
 160         network_stop();
 161 }
 162
 163 void on_ButtonHide_clicked(GtkButton *button,gpointer user_data)
 164 {
 165         g_return_if_fail(GTK_IS_BUTTON(button));
 166
 167         /* update config file */
 168         optarg_port_set_string(gtk_entry_get_text(PortEntry));
 169
 170         /* Do not: gtk_main_quit();
 171          * as 'App' widget will quit our gtk_main() automatically.
 172          */
 173         gtk_widget_destroy(GTK_WIDGET(App));
 174         App=NULL;
 175 }
 176
 177 static void ui_gnome_network_notify_hostip(guint32 hostip_guint32)
 178 {
 179         if (!App)       /* Quitting? */
 180                 return;
 181
 182         if (!hostip_guint32) {
 183 pid_t daemon_pid;
 184
 185                 daemon_pid=is_daemon_running();
 186                 if ((pid_t)-1==daemon_pid)
 187                         gtk_entry_set_text(HostIPEntry,_("(unknown; Start the daemon)"));
 188                 else if (getpid()==daemon_pid)
 189                         gtk_entry_set_text(HostIPEntry,_("(unknown; detecting...)"));
 190                 else
 191                         gtk_entry_set_text(HostIPEntry,_("(unknown; Kill the daemon and start your own)"));
 192                 }
 193         else {
 194                 gtk_entry_set_text(HostIPEntry,HOSTIP_GUINT32_TO_STRING(hostip_guint32));
 195                 }
 196 }
 197
 198 static guint ui_gnome_g_log_handler_handler_id;
 199 static void ui_gnome_g_log_handler(const gchar *log_domain,GLogLevelFlags log_level,const gchar *message,gpointer user_data)
 200 {
 201 GtkWidget *dialog;
 202
 203         if (!App)       /* Quitting? */
 204                 return;
 205
 206         /**/ if (log_level & G_LOG_LEVEL_ERROR)
 207                 dialog=gnome_app_error(App,message);
 208         else if (log_level & (G_LOG_LEVEL_CRITICAL|G_LOG_LEVEL_WARNING))
 209                 dialog=gnome_app_warning(App,message);
 210         else
 211                 dialog=gnome_app_message(App,message);
 212
 213         gtk_window_set_modal(GTK_WINDOW(dialog),TRUE);
 214         g_signal_connect((gpointer)dialog,"close",G_CALLBACK(gtk_main_quit),NULL);
 215         gtk_main();
 216         /* 'dialog' gets destroyed automatically */
 217 }
 218
 219 static void ui_gnome_interactive(void)
 220 {
 221         probe_timeout_sec_max=UI_GNOME_PROBE_TIMEOUT_SEC;
 222         gtk_main();
 223         network_notify_hostip=NULL;
 224         g_log_remove_handler(
 225                         G_LOG_DOMAIN,   /* log_domain; "Captive" */
 226                         ui_gnome_g_log_handler_handler_id);     /* handler_id */
 227         network_detach();
 228 }
 229
 230 /* of "ui-gnome-interface.h": */
 231 GtkWidget *create_App(void);
 232 /* of "ui-gnome-support.h": */
 233 GtkWidget *lookup_widget(GtkWidget *widget,const gchar *widget_name);
 234
 235 gboolean ui_gnome_init(void)
 236 {
 237         App=GNOME_APP(create_App());
 238
 239         ButtonStart=GTK_BUTTON(lookup_widget(GTK_WIDGET(App),"ButtonStart"));
 240         ButtonStop=GTK_BUTTON(lookup_widget(GTK_WIDGET(App),"ButtonStop"));
 241         PortHBox=GTK_HBOX(lookup_widget(GTK_WIDGET(App),"PortHBox"));
 242         AppBar=GNOME_APPBAR(lookup_widget(GTK_WIDGET(App),"AppBar"));
 243         PortEntry=GTK_ENTRY(lookup_widget(GTK_WIDGET(App),"PortEntry"));
 244         HostIPEntry=GTK_ENTRY(lookup_widget(GTK_WIDGET(App),"HostIPEntry"));
 245         AutostartLabel=GTK_LABEL(lookup_widget(GTK_WIDGET(App),"AutostartLabel"));
 246         AutostartCheckButton=GTK_CHECK_BUTTON(lookup_widget(GTK_WIDGET(App),"AutostartCheckButton"));
 247
 248         /* ui_gnome_g_log_handler() needs 'App'. */
 249         ui_gnome_g_log_handler_handler_id=g_log_set_handler(
 250                         G_LOG_DOMAIN,   /* log_domain; "Captive" */
 251                         (G_LOG_LEVEL_MASK|G_LOG_FLAG_FATAL)&~(0
 252                                         |G_LOG_LEVEL_MESSAGE
 253                                         |G_LOG_LEVEL_INFO
 254                                         |G_LOG_LEVEL_DEBUG),    /* log_levels */
 255                         ui_gnome_g_log_handler, /* log_func */
 256                         NULL);  /* user_data */
 257
 258         ui_gnome_network_notify_hostip(0);
 259         gtk_entry_set_text(PortEntry,udpgate_printf_alloca("%d",(int)optarg_port));
 260         if (!startup_init()) {
 261                 gtk_toggle_button_set_inconsistent(GTK_TOGGLE_BUTTON(AutostartCheckButton),TRUE);
 262                 gtk_widget_set_sensitive(GTK_WIDGET(AutostartLabel),FALSE);
 263                 gtk_widget_set_sensitive(GTK_WIDGET(AutostartCheckButton),FALSE);
 264                 }
 265         daemon_check_timeout_func(NULL);        /* data; unused */
 266         external_startup_check_timeout_func(NULL);      /* data; unused */
 267
 268         gtk_widget_show_all(GTK_WIDGET(App));
 269         g_timeout_add(
 270                         DAEMON_CHECK_INTERVAL_MS,       /* interval */
 271                         daemon_check_timeout_func,      /* function */
 272                         NULL);  /* data; unused */
 273         g_timeout_add(
 274                         EXTERNAL_STARTUP_CHECK_INTERVAL_MS,     /* interval */
 275                         external_startup_check_timeout_func,    /* function */
 276                         NULL);  /* data; unused */
 277
 278         network_notify_hostip=ui_gnome_network_notify_hostip;
 279
 280         ui_interactive=ui_gnome_interactive;
 281
 282         return TRUE;
 283 }