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