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 "static-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 (static_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 static void buttonstart(void)
 113 {
 114         if (!optarg_port_set_string(gtk_entry_get_text(PortEntry)))
 115                 return;
 116         network_start(optarg_port);
 117 }
 118
 119 void on_PortButtonRandom_clicked(GtkButton *button,gpointer user_data)
 120 {
 121         g_return_if_fail(GTK_IS_BUTTON(button));
 122
 123         state_start_stop();
 124         if ((pid_t)-1!=is_daemon_running())
 125                 return;
 126         gtk_entry_set_text(PortEntry,
 127                         udpgate_printf_alloca("%d",(int)g_random_int_range(PORT_RANGE_BEGIN,PORT_RANGE_END)));
 128         buttonstart();
 129 }
 130
 131 void on_AutostartCheckButton_toggled(GtkToggleButton *togglebutton,gpointer user_data)
 132 {
 133 static gint inside=0;
 134
 135         g_return_if_fail(GTK_IS_TOGGLE_BUTTON(togglebutton));
 136
 137         /* Avoid reentrancy to prevent segfault during failed registration.
 138          * FIXME: Who knows why? Some forbidden GTK recursion occurs.
 139          */
 140         g_assert(inside>=0);
 141         if (inside)
 142                 return;
 143         inside++;
 144
 145         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(AutostartCheckButton)))
 146                 static_startup_on();
 147         else
 148                 static_startup_off();
 149         external_startup_check_timeout_func(NULL);      /* data; unused */
 150
 151         g_assert(inside==1);
 152         inside--;
 153 }
 154
 155 void on_ButtonStart_clicked(GtkButton *button,gpointer user_data)
 156 {
 157         g_return_if_fail(GTK_IS_BUTTON(button));
 158
 159         buttonstart();
 160 }
 161
 162 void on_ButtonStop_clicked(GtkButton *button,gpointer user_data)
 163 {
 164         g_return_if_fail(GTK_IS_BUTTON(button));
 165
 166         network_stop();
 167 }
 168
 169 void on_ButtonHide_clicked(GtkButton *button,gpointer user_data)
 170 {
 171 GnomeApp *App_local;
 172
 173         g_return_if_fail(GTK_IS_BUTTON(button));
 174
 175         /* update config file */
 176         optarg_port_set_string(gtk_entry_get_text(PortEntry));
 177
 178         /* Do not: gtk_main_quit();
 179          * as 'App' widget will quit our gtk_main() automatically.
 180          */
 181         /* Do not: gtk_widget_destroy(App); App=NULL;
 182          * as it would race with g_timeout_add()ed function which check
 183          * 'if (!App)' first and expect there fully valid tree afterwards.
 184          */
 185         App_local=App;
 186         App=NULL;
 187         gtk_widget_destroy(GTK_WIDGET(App_local));
 188 }
 189
 190 static void ui_gnome_network_notify_hostip(guint32 hostip_guint32)
 191 {
 192         if (!App)       /* Quitting? */
 193                 return;
 194
 195         if (!hostip_guint32) {
 196 pid_t daemon_pid;
 197
 198                 daemon_pid=is_daemon_running();
 199                 if ((pid_t)-1==daemon_pid)
 200                         gtk_entry_set_text(HostIPEntry,_("(unknown; Start the daemon)"));
 201                 else if (getpid()==daemon_pid)
 202                         gtk_entry_set_text(HostIPEntry,_("(unknown; detecting...)"));
 203                 else
 204                         gtk_entry_set_text(HostIPEntry,_("(unknown; Kill the daemon and start your own)"));
 205                 }
 206         else {
 207                 gtk_entry_set_text(HostIPEntry,HOSTIP_GUINT32_TO_STRING(hostip_guint32));
 208                 }
 209 }
 210
 211 static guint ui_gnome_g_log_handler_handler_id;
 212 static void ui_gnome_g_log_handler(const gchar *log_domain,GLogLevelFlags log_level,const gchar *message,gpointer user_data)
 213 {
 214 GtkWidget *dialog;
 215
 216         if (!App)       /* Quitting? */
 217                 return;
 218
 219         /**/ if (log_level & G_LOG_LEVEL_ERROR)
 220                 dialog=gnome_app_error(App,message);
 221         else if (log_level & (G_LOG_LEVEL_CRITICAL|G_LOG_LEVEL_WARNING))
 222                 dialog=gnome_app_warning(App,message);
 223         else
 224                 dialog=gnome_app_message(App,message);
 225
 226         /* Do not set it modal as ... who knows. At least in the fully static
 227          * build during on_AutostartCheckButton_toggled() we get reported
 228          * the messages twice and application immediately gtk_main_quit()
 229          * even the second (toplevel) gtk_main().
 230          */
 231 #if 0
 232         gtk_window_set_modal(GTK_WINDOW(dialog),TRUE);
 233         g_signal_connect((gpointer)dialog,"close",G_CALLBACK(gtk_main_quit),NULL);
 234         gtk_main();
 235         /* 'dialog' gets destroyed automatically */
 236 #endif
 237 }
 238
 239 static void ui_gnome_interactive(void)
 240 {
 241         probe_timeout_sec_max=UI_GNOME_PROBE_TIMEOUT_SEC;
 242         gtk_main();
 243         network_notify_hostip=NULL;
 244         g_log_remove_handler(
 245                         G_LOG_DOMAIN,   /* log_domain; "Captive" */
 246                         ui_gnome_g_log_handler_handler_id);     /* handler_id */
 247         network_detach();
 248 }
 249
 250 /* of "ui-gnome-interface.h": */
 251 GtkWidget *create_App(void);
 252 /* of "ui-gnome-support.h": */
 253 GtkWidget *lookup_widget(GtkWidget *widget,const gchar *widget_name);
 254
 255 gboolean ui_gnome_init(void)
 256 {
 257         App=GNOME_APP(create_App());
 258
 259         ButtonStart=GTK_BUTTON(lookup_widget(GTK_WIDGET(App),"ButtonStart"));
 260         ButtonStop=GTK_BUTTON(lookup_widget(GTK_WIDGET(App),"ButtonStop"));
 261         PortHBox=GTK_HBOX(lookup_widget(GTK_WIDGET(App),"PortHBox"));
 262         AppBar=GNOME_APPBAR(lookup_widget(GTK_WIDGET(App),"AppBar"));
 263         PortEntry=GTK_ENTRY(lookup_widget(GTK_WIDGET(App),"PortEntry"));
 264         HostIPEntry=GTK_ENTRY(lookup_widget(GTK_WIDGET(App),"HostIPEntry"));
 265         AutostartLabel=GTK_LABEL(lookup_widget(GTK_WIDGET(App),"AutostartLabel"));
 266         AutostartCheckButton=GTK_CHECK_BUTTON(lookup_widget(GTK_WIDGET(App),"AutostartCheckButton"));
 267
 268         /* ui_gnome_g_log_handler() needs 'App'. */
 269         ui_gnome_g_log_handler_handler_id=g_log_set_handler(
 270                         G_LOG_DOMAIN,   /* log_domain; "Captive" */
 271                         (G_LOG_LEVEL_MASK|G_LOG_FLAG_FATAL)&~(0
 272                                         |G_LOG_LEVEL_MESSAGE
 273                                         |G_LOG_LEVEL_INFO
 274                                         |G_LOG_LEVEL_DEBUG),    /* log_levels */
 275                         ui_gnome_g_log_handler, /* log_func */
 276                         NULL);  /* user_data */
 277
 278         ui_gnome_network_notify_hostip(0);
 279         gtk_entry_set_text(PortEntry,udpgate_printf_alloca("%d",(int)optarg_port));
 280         if (!static_startup_supported()) {
 281                 gtk_widget_set_sensitive(GTK_WIDGET(AutostartLabel),FALSE);
 282                 gtk_widget_set_sensitive(GTK_WIDGET(AutostartCheckButton),FALSE);
 283                 }
 284         if (!static_startup_query(NULL))
 285                 gtk_toggle_button_set_inconsistent(GTK_TOGGLE_BUTTON(AutostartCheckButton),TRUE);
 286         daemon_check_timeout_func(NULL);        /* data; unused */
 287         external_startup_check_timeout_func(NULL);      /* data; unused */
 288
 289         gtk_widget_show_all(GTK_WIDGET(App));
 290         g_timeout_add(
 291                         DAEMON_CHECK_INTERVAL_MS,       /* interval */
 292                         daemon_check_timeout_func,      /* function */
 293                         NULL);  /* data; unused */
 294         g_timeout_add(
 295                         EXTERNAL_STARTUP_CHECK_INTERVAL_MS,     /* interval */
 296                         external_startup_check_timeout_func,    /* function */
 297                         NULL);  /* data; unused */
 298
 299         network_notify_hostip=ui_gnome_network_notify_hostip;
 300
 301         ui_interactive=ui_gnome_interactive;
 302
 303         return TRUE;
 304 }