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