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 #include "configuration.h"
  40 #include "startup.h"
  41 #ifdef ENABLE_BUNDLE
  42 #include "bundle-util.h"
  43 #endif
  44
  45 #ifdef HAVE_GNOME
  46 #include "ui-gnome.h"
  47 #endif
  48
  49
  50 /* Config: */
  51 #define LOCAL_PORT_DEFAULT 9201
  52
  53
  54 static int optarg_text;
  55 int optarg_verbose;
  56 int optarg_port=LOCAL_PORT_DEFAULT;
  57 static int optarg_start;
  58 static int optarg_stop;
  59 int optarg_no_fork;
  60 static int optarg_startup_query;
  61 static int optarg_startup_on;
  62 static int optarg_startup_off;
  63
  64 void (*ui_interactive)(void);
  65
  66 static const struct poptOption popt_table[]={
  67
  68 #define UDPGATE_POPT(shortname,longname,argInfoP,argP,valP,descripP,argDescripP) \
  69                 { \
  70                         longName: (longname), \
  71                         shortName: (shortname), \
  72                         argInfo: (argInfoP)|(!(valP) ? 0 : POPT_ARG_VAL), \
  73                         arg: (void *)argP, \
  74                         val: (valP), \
  75                         descrip: (descripP), \
  76                         argDescrip: (argDescripP), \
  77                 }
  78
  79 #ifdef HAVE_GNOME
  80 #define OPT_TEXT_IF_GNOME N_("Disable Gnome UI; --text must be first argument")
  81 #else /* HAVE_GNOME */
  82 #define OPT_TEXT_IF_GNOME N_("(no Gnome UI compiled - stub only); --text must be first argument")
  83 #endif /* HAVE_GNOME */
  84                 UDPGATE_POPT(0  ,"text"         ,POPT_ARG_NONE                          ,&optarg_text         ,0,
  85                                 OPT_TEXT_IF_GNOME,NULL),
  86 #undef OPT_TEXT_IF_GNOME
  87                 UDPGATE_POPT('v',"verbose"      ,POPT_ARG_NONE                          ,&optarg_verbose      ,0,
  88                                 N_("Display additional debug information"),NULL),
  89                 UDPGATE_POPT('p',"port"         ,POPT_ARG_INT |POPT_ARGFLAG_SHOW_DEFAULT,&optarg_port         ,0,
  90                                 N_("Listen on this UDP port"),NULL),
  91                 UDPGATE_POPT('s',"start"        ,POPT_ARG_NONE                          ,&optarg_start        ,0,
  92                                 N_("Start the daemon"),NULL),
  93                 UDPGATE_POPT('S',"stop"         ,POPT_ARG_NONE                          ,&optarg_stop         ,0,
  94                                 N_("Stop the daemon"),NULL),
  95                 UDPGATE_POPT('1',"no-fork"      ,POPT_ARG_NONE                          ,&optarg_no_fork      ,0,
  96                                 N_("Do not detach from the current process"),NULL),
  97                 UDPGATE_POPT(0  ,"startup-query",POPT_ARG_NONE                          ,&optarg_startup_query,0,
  98                                 N_("Query the current state of the system startup registrance"),NULL),
  99                 UDPGATE_POPT(0  ,"startup-on"   ,POPT_ARG_NONE                          ,&optarg_startup_on   ,0,
 100                                 N_("Register for the automatic system startup"),NULL),
 101                 UDPGATE_POPT(0  ,"startup-off"  ,POPT_ARG_NONE                          ,&optarg_startup_off  ,0,
 102                                 N_("Unregister from the automatic system startup"),NULL),
 103
 104 #undef UDPGATE_POPT
 105                 POPT_TABLEEND
 106                 };
 107
 108 static const struct poptOption popt_table_autohelp[]={
 109                 { NULL,'\0',POPT_ARG_INCLUDE_TABLE,(struct poptOption *)&popt_table,0,PACKAGE },
 110                 POPT_AUTOHELP
 111                 POPT_TABLEEND
 112                 };
 113
 114
 115 #ifdef HAVE_GNOME
 116 static jmp_buf gnome_init_atexit_jmpbuf;
 117 static gboolean gnome_init_atexit_disable;
 118
 119 static void gnome_init_atexit_handler(void)
 120 {
 121         if (gnome_init_atexit_disable)
 122                 return;
 123
 124         longjmp(gnome_init_atexit_jmpbuf,1);
 125         g_assert_not_reached();
 126         _exit(EXIT_FAILURE);
 127 }
 128
 129 static gboolean gnome_init_g_log_handler_hit;
 130 static void gnome_init_g_log_handler(const gchar *log_domain,GLogLevelFlags log_level,const gchar *message,gpointer user_data)
 131 {
 132         gnome_init_g_log_handler_hit=TRUE;
 133         g_log_default_handler(log_domain,log_level,message,user_data);
 134 }
 135 #endif /* HAVE_GNOME */
 136
 137 #ifdef ENABLE_BUNDLE
 138 static gboolean locale_files_write(void)
 139 {
 140 gchar catalogs[]=G_STRINGIFY(CATALOGS);
 141 gchar *catalog,*catalog_next;
 142
 143         for (catalog=catalogs;*catalog;catalog=catalog_next) {
 144 gchar *cc,*cc_end;
 145
 146                 for (catalog_next=catalog;*catalog_next && *catalog_next!=' ';catalog_next++);
 147                 if (*catalog_next)
 148                         *catalog_next++='\0';
 149                 cc=g_strdup(catalog);
 150                 cc_end=cc+strlen(cc)-strlen(".gmo");
 151                 if (!strcmp(cc_end,".gmo")) {   /* errors ignored */
 152                         *cc_end='\0';
 153                         bundle_util_file_write( /* errors ignored */
 154                                         udpgate_printf_alloca("%s/%s/LC_MESSAGES/%s.mo",LOCALEDIR,cc,PACKAGE),  /* pathname */
 155                                         catalog,        /* basename */
 156                                         0644,   /* pathname_mode */
 157                                         FALSE); /* pathname_backup */
 158                         }
 159                 g_free(cc);
 160                 }
 161         return FALSE;
 162 }
 163 #endif /* ENABLE_BUNDLE */
 164
 165 int main(int argc,char **argv)
 166 {
 167 poptContext context;
 168 int errint;
 169 gboolean is_interactive;
 170 #ifdef HAVE_GNOME
 171 gboolean no_gnome;
 172 #endif /* HAVE_GNOME */
 173 int exit_rc=EXIT_SUCCESS;
 174
 175 #ifdef ENABLE_BUNDLE
 176         locale_files_write();
 177 #endif /* ENABLE_BUNDLE */
 178
 179 #if 0
 180         g_log_set_always_fatal(~(0
 181                         |G_LOG_LEVEL_MESSAGE
 182                         |G_LOG_LEVEL_INFO
 183                         |G_LOG_LEVEL_DEBUG
 184                         ));
 185 #endif
 186
 187         /* Initialize the i18n stuff */
 188         setlocale(LC_ALL,"");
 189         bindtextdomain(PACKAGE,LOCALEDIR);
 190         textdomain(PACKAGE);
 191
 192         /* Read it before the command-line parsing to get the default value
 193          * of 'optarg_port' displayable by 'POPT_ARGFLAG_SHOW_DEFAULT'.
 194          */
 195         configuration_read();
 196
 197         if (argv[1] && !strcmp(argv[1],"--text"))
 198                 optarg_text=1;
 199
 200 #ifdef HAVE_GNOME
 201         no_gnome=(optarg_text || !getenv("DISPLAY") || !*getenv("DISPLAY"));
 202
 203         if (no_gnome)
 204 #endif /* HAVE_GNOME */
 205         {
 206                 context=poptGetContext(
 207                                 PACKAGE,        /* name */
 208                                 argc,(/*en-const*/const char **)argv,   /* argc,argv */
 209                                 popt_table_autohelp,    /* options */
 210                                 POPT_CONTEXT_POSIXMEHARDER);    /* flags; && !POPT_CONTEXT_KEEP_FIRST */
 211                 if (context==NULL) {
 212                         g_assert_not_reached(); /* argument recognization args_error */
 213                         return EXIT_FAILURE;
 214                         }
 215                 errint=poptReadDefaultConfig(context,
 216                                 TRUE);  /* useEnv */
 217                 if (errint!=0) {
 218                         g_assert_not_reached(); /* argument recognization args_error */
 219                         return EXIT_FAILURE;
 220                         }
 221                 errint=poptGetNextOpt(context);
 222                 if (errint!=-1)
 223                         g_error(_("Specified option not expected"));
 224                 if (poptPeekArg(context))
 225                         g_error(_("No arguments expected"));
 226                 }
 227 #ifdef HAVE_GNOME
 228         else {
 229 GnomeProgram *gnome_program;
 230 guint handler_id;
 231
 232                 gnome_init_atexit_disable=FALSE;
 233                 g_atexit(gnome_init_atexit_handler);
 234                 gnome_init_g_log_handler_hit=FALSE;
 235                 handler_id=g_log_set_handler(
 236                                 "Gtk",  /* log_domain */
 237                                 G_LOG_LEVEL_WARNING,    /* log_levels */
 238                                 gnome_init_g_log_handler,       /* log_func */
 239                                 NULL);  /* user_data */
 240                 if (!setjmp(gnome_init_atexit_jmpbuf))
 241                         gnome_program=gnome_program_init(PACKAGE,VERSION,LIBGNOMEUI_MODULE,argc,argv,
 242                                         GNOME_PARAM_POPT_TABLE,popt_table,
 243                                         GNOME_PARAM_POPT_FLAGS,(int)POPT_CONTEXT_POSIXMEHARDER,
 244                                         NULL);
 245                 else {
 246                         no_gnome=TRUE;
 247                         /* No message: (udpgate:3693): Gtk-WARNING **: cannot open display:
 248                          * was reported, probably only '--help' message was shown.
 249                          */
 250                         if (!gnome_init_g_log_handler_hit)
 251                                 exit(EXIT_SUCCESS);
 252                         }
 253                 gnome_init_atexit_disable=TRUE;
 254                 g_log_remove_handler(
 255                                 "Gtk",  /* log_domain */
 256                                 handler_id);    /* handler_id */
 257                 }
 258 #endif /* HAVE_GNOME */
 259
 260         is_interactive=(1
 261                         && !optarg_start
 262                         && !optarg_stop
 263                         && !optarg_startup_query
 264                         && !optarg_startup_on
 265                         && !optarg_startup_off);
 266
 267         /* Initialize UI here to catch all GLog errors below. */
 268         if (is_interactive
 269 #ifdef HAVE_GNOME
 270                         && (no_gnome || !ui_gnome_init())
 271 #endif /* HAVE_GNOME */
 272                         && !ui_line_init())
 273                 g_error(_("No UI interface could be initialized"));
 274
 275         if (!is_interactive) {
 276
 277                 if (optarg_startup_query || optarg_startup_off || optarg_startup_on)
 278                         startup_init();
 279
 280                 if (optarg_stop)
 281                         if (!network_stop())
 282                                 exit_rc=2;
 283                 if (optarg_startup_query) {
 284 gboolean is_on;
 285
 286                         if (startup_query(&is_on)) {
 287                                 g_message((is_on
 288                                                 ? _("System startup registrance is turned on.")
 289                                                 : _("System startup registrance is turned off.")));
 290                                 if (exit_rc<2)
 291                                         exit_rc=(is_on ? 0 : 1);
 292                                 }
 293                         else
 294                                 exit_rc=2;
 295                         }
 296                 if (optarg_startup_off) {
 297                         if (!startup_off())
 298                                 exit_rc=2;
 299                         }
 300                 if (optarg_startup_on) {
 301                         if (!startup_on())
 302                                 exit_rc=2;
 303                         }
 304                 if (optarg_start)
 305                         if (!network_start(optarg_port))
 306                                 exit_rc=2;
 307
 308                 network_detach();
 309                 }
 310         else
 311                 (*ui_interactive)();
 312
 313         configuration_write();
 314
 315         exit(exit_rc);
 316 }