src/main.c

   1 /* $Id$
   2  * UDP Gateway utility
   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 <glib/gmessages.h>
  23 #include <popt.h>
  24 #include <locale.h>
  25 #include <stdlib.h>
  26 #include <glib/gutils.h>
  27 #include <string.h>
  28 #include <setjmp.h>
  29 #include <unistd.h>
  30
  31 #ifdef HAVE_GNOME
  32 #include <libgnome/gnome-program.h>
  33 #include <libgnomeui/gnome-ui-init.h>
  34 #endif
  35
  36 #include "main.h"       /* self */
  37 #include "ui-line.h"
  38 #include "network.h"
  39
  40 #ifdef HAVE_GNOME
  41 #include "ui-gnome.h"
  42 #endif
  43
  44
  45 /* Config: */
  46 #define LOCAL_PORT_DEFAULT 9201
  47
  48
  49 static int optarg_text;
  50 int optarg_verbose;
  51 int optarg_port=LOCAL_PORT_DEFAULT;
  52 static int optarg_start;
  53 static int optarg_stop;
  54 int optarg_no_fork;
  55
  56 void (*ui_interactive)(void);
  57
  58 static const struct poptOption popt_table[]={
  59
  60 #define UDPGATE_POPT(shortname,longname,argInfoP,argP,valP,descripP,argDescripP) \
  61                 { \
  62                         longName: (longname), \
  63                         shortName: (shortname), \
  64                         argInfo: (argInfoP)|(!(valP) ? 0 : POPT_ARG_VAL), \
  65                         arg: (void *)argP, \
  66                         val: (valP), \
  67                         descrip: (descripP), \
  68                         argDescrip: (argDescripP), \
  69                 }
  70
  71                 UDPGATE_POPT(0  ,"text"   ,POPT_ARG_NONE                          ,&optarg_text   ,0,
  72 #ifdef HAVE_GNOME
  73                                 N_("Disable Gnome UI; --text must be first argument")
  74 #else /* HAVE_GNOME */
  75                                 N_("(no Gnome UI compiled - stub only); --text must be first argument")
  76 #endif /* HAVE_GNOME */
  77                                 ,NULL),
  78                 UDPGATE_POPT('v',"verbose",POPT_ARG_NONE                          ,&optarg_verbose,0,
  79                                 N_("Display additional debug information"),NULL),
  80                 UDPGATE_POPT('p',"port"   ,POPT_ARG_INT |POPT_ARGFLAG_SHOW_DEFAULT,&optarg_port   ,0,
  81                                 N_("Listen on this UDP port"),NULL),
  82                 UDPGATE_POPT('s',"start"  ,POPT_ARG_NONE                          ,&optarg_start  ,0,
  83                                 N_("Start the daemon"),NULL),
  84                 UDPGATE_POPT('S',"stop"   ,POPT_ARG_NONE                          ,&optarg_stop   ,0,
  85                                 N_("Stop the daemon"),NULL),
  86                 UDPGATE_POPT('1',"no-fork",POPT_ARG_NONE                          ,&optarg_no_fork,0,
  87                                 N_("Do not detach from the current process"),NULL),
  88
  89 #undef UDPGATE_POPT
  90                 POPT_TABLEEND
  91                 };
  92
  93 static const struct poptOption popt_table_autohelp[]={
  94                 { NULL,'\0',POPT_ARG_INCLUDE_TABLE,(struct poptOption *)&popt_table,0,PACKAGE },
  95                 POPT_AUTOHELP
  96                 POPT_TABLEEND
  97                 };
  98
  99
 100 #ifdef HAVE_GNOME
 101 static jmp_buf gnome_init_atexit_jmpbuf;
 102 static gboolean gnome_init_atexit_disable;
 103
 104 static void gnome_init_atexit_handler(void)
 105 {
 106         if (gnome_init_atexit_disable)
 107                 return;
 108
 109         longjmp(gnome_init_atexit_jmpbuf,1);
 110         g_assert_not_reached();
 111         _exit(EXIT_FAILURE);
 112 }
 113
 114 static gboolean gnome_init_g_log_handler_hit;
 115 static void gnome_init_g_log_handler(const gchar *log_domain,GLogLevelFlags log_level,const gchar *message,gpointer user_data)
 116 {
 117         gnome_init_g_log_handler_hit=TRUE;
 118         g_log_default_handler(log_domain,log_level,message,user_data);
 119 }
 120 #endif /* HAVE_GNOME */
 121
 122 int main(int argc,char **argv)
 123 {
 124 poptContext context;
 125 int errint;
 126 gboolean is_interactive;
 127 #ifdef HAVE_GNOME
 128 gboolean no_gnome;
 129 #endif /* HAVE_GNOME */
 130
 131 #if 0
 132         g_log_set_always_fatal(~(0
 133                         |G_LOG_LEVEL_MESSAGE
 134                         |G_LOG_LEVEL_INFO
 135                         |G_LOG_LEVEL_DEBUG
 136                         ));
 137 #endif
 138
 139         /* Initialize the i18n stuff */
 140         setlocale(LC_ALL,"");
 141         bindtextdomain(PACKAGE,LOCALEDIR);
 142         textdomain(PACKAGE);
 143
 144         if (argv[1] && !strcmp(argv[1],"--text"))
 145                 optarg_text=1;
 146
 147 #ifdef HAVE_GNOME
 148         no_gnome=(optarg_text || !getenv("DISPLAY") || !*getenv("DISPLAY"));
 149
 150         if (no_gnome)
 151 #endif /* HAVE_GNOME */
 152         {
 153                 context=poptGetContext(
 154                                 PACKAGE,        /* name */
 155                                 argc,(/*en-const*/const char **)argv,   /* argc,argv */
 156                                 popt_table_autohelp,    /* options */
 157                                 POPT_CONTEXT_POSIXMEHARDER);    /* flags; && !POPT_CONTEXT_KEEP_FIRST */
 158                 if (context==NULL) {
 159                         g_assert_not_reached(); /* argument recognization args_error */
 160                         return EXIT_FAILURE;
 161                         }
 162                 errint=poptReadDefaultConfig(context,
 163                                 TRUE);  /* useEnv */
 164                 if (errint!=0) {
 165                         g_assert_not_reached(); /* argument recognization args_error */
 166                         return EXIT_FAILURE;
 167                         }
 168                 errint=poptGetNextOpt(context);
 169                 if (errint!=-1)
 170                         g_error(_("Specified option not expected"));
 171                 if (poptPeekArg(context))
 172                         g_error(_("No arguments expected"));
 173                 }
 174 #ifdef HAVE_GNOME
 175         else {
 176 GnomeProgram *gnome_program;
 177 guint handler_id;
 178
 179                 gnome_init_atexit_disable=FALSE;
 180                 g_atexit(gnome_init_atexit_handler);
 181                 gnome_init_g_log_handler_hit=FALSE;
 182                 handler_id=g_log_set_handler(
 183                                 "Gtk",  /* log_domain */
 184                                 G_LOG_LEVEL_WARNING,    /* log_levels */
 185                                 gnome_init_g_log_handler,       /* log_func */
 186                                 NULL);  /* user_data */
 187                 if (!setjmp(gnome_init_atexit_jmpbuf))
 188                         gnome_program=gnome_program_init(PACKAGE,VERSION,LIBGNOMEUI_MODULE,argc,argv,
 189                                         GNOME_PARAM_POPT_TABLE,popt_table,
 190                                         GNOME_PARAM_POPT_FLAGS,(int)POPT_CONTEXT_POSIXMEHARDER,
 191                                         NULL);
 192                 else {
 193                         no_gnome=TRUE;
 194                         /* No message: (captive-install-acquire:3693): Gtk-WARNING **: cannot open display:
 195                          * was reported, probably only '--help' message was shown.
 196                          */
 197                         if (!gnome_init_g_log_handler_hit)
 198                                 exit(EXIT_SUCCESS);
 199                         }
 200                 gnome_init_atexit_disable=TRUE;
 201                 g_log_remove_handler(
 202                                 "Gtk",  /* log_domain */
 203                                 handler_id);    /* handler_id */
 204                 }
 205 #endif /* HAVE_GNOME */
 206
 207         is_interactive=(1
 208                         && !optarg_start
 209                         && !optarg_stop);
 210
 211         /* Initialize UI here to catch all GLog errors below. */
 212         if (is_interactive
 213 #ifdef HAVE_GNOME
 214                         && (no_gnome || !ui_gnome_init())
 215 #endif /* HAVE_GNOME */
 216                         && !ui_line_init())
 217                 g_error(_("No UI interface could be initialized"));
 218
 219         if (!is_interactive) {
 220                 if (optarg_stop)
 221                         network_stop();
 222                 if (optarg_start)
 223                         network_start(optarg_port);
 224                 network_detach();
 225                 }
 226         else
 227                 (*ui_interactive)();
 228
 229         return EXIT_SUCCESS;
 230 }