src/networkctl/main.c

   1 /*#############################################################################
   2 #                                                                             #
   3 # IPFire.org - A linux based firewall                                         #
   4 # Copyright (C) 2023 IPFire Network Development Team                          #
   5 #                                                                             #
   6 # This program is free software: you can redistribute it and/or modify        #
   7 # it under the terms of the GNU General Public License as published by        #
   8 # the Free Software Foundation, either version 3 of the License, or           #
   9 # (at your option) any later version.                                         #
  10 #                                                                             #
  11 # This program is distributed in the hope that it will be useful,             #
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  14 # GNU General Public License for more details.                                #
  15 #                                                                             #
  16 # You should have received a copy of the GNU General Public License           #
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  18 #                                                                             #
  19 #############################################################################*/
  20
  21 #include <errno.h>
  22 #include <getopt.h>
  23 #include <stdio.h>
  24 #include <unistd.h>
  25
  26 #include <systemd/sd-bus.h>
  27
  28 static int version(void) {
  29         printf("networkctl %s\n", PACKAGE_VERSION);
  30
  31         return 0;
  32 }
  33
  34 static int help(void) {
  35         printf(
  36                 "%s [OPTIONS...] COMMAND\n\n"
  37                 "Options:\n"
  38                 "  -h --help          Show help\n"
  39                 "     --version       Show version\n",
  40                 program_invocation_short_name
  41         );
  42
  43         return 0;
  44 }
  45
  46 static int parse_argv(int argc, char* argv[]) {
  47         enum {
  48                 ARG_VERSION,
  49         };
  50
  51         static const struct option options[] = {
  52                 { "help",    no_argument, NULL, 'h' },
  53                 { "version", no_argument, NULL, ARG_VERSION },
  54                 { NULL },
  55         };
  56         int c;
  57
  58         for (;;) {
  59                 c = getopt_long(argc, argv, "h", options, NULL);
  60                 if (c < 0)
  61                         break;
  62
  63                 switch (c) {
  64                         case 'h':
  65                                 return help();
  66
  67                         case ARG_VERSION:
  68                                 return version();
  69
  70                         case '?':
  71                                 return -EINVAL;
  72
  73                         default:
  74                                 break;
  75                 }
  76         }
  77
  78         return 0;
  79 }
  80
  81 int main(int argc, char* argv[]) {
  82         sd_bus* bus = NULL;
  83         int r;
  84
  85         // Parse command line arguments
  86         r = parse_argv(argc, argv);
  87         if (r)
  88                 goto ERROR;
  89
  90         // Connect to system bus
  91         r = sd_bus_open_system(&bus);
  92         if (r < 0) {
  93                 fprintf(stderr, "Could not connect to system bus: %m\n");
  94                 goto ERROR;
  95         }
  96
  97         // XXX TODO Do all the work
  98
  99 ERROR:
 100         if (bus)
 101                 sd_bus_flush_close_unref(bus);
 102
 103         return r;
 104 }