src/tomc/main.c

   1 /* Copyright (C) 2018 Thomas Balzer */
   2
   3 /* This file is part of tomd. */
   4
   5 /* tomd 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, either version 3 of the License, or */
   8 /* (at your option) any later version. */
   9
  10 /* tomd is distributed in the hope that it will be useful, */
  11 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */
  12 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the */
  13 /* GNU General Public License for more details. */
  14
  15 /* You should have received a copy of the GNU General Public License */
  16 /* along with tomd.  If not, see <http://www.gnu.org/licenses/>. */
  17
  18 #include <stdlib.h>
  19 #include <stdio.h>
  20 #include <sys/un.h>
  21 #include <sys/socket.h>
  22 #include <unistd.h>
  23
  24 #include "../../include/macros.h"
  25
  26 static int sfd;
  27
  28 static void init(void)
  29 {
  30   /* init socket connection */
  31   sfd =
  32     socket(PF_LOCAL,
  33            SOCK_STREAM,
  34            0);
  35   if(sfd < 0){
  36     perror("socket");
  37     exit(EXIT_FAILURE);
  38   }
  39
  40   struct sockaddr_un addr;
  41   addr.sun_family = AF_LOCAL;
  42   sprintf(addr.sun_path, "/run/user/1000/tomd/socket");
  43
  44   if(connect(sfd, (struct sockaddr *) &addr, SUN_LEN(&addr)) != 0){
  45     perror("connect");
  46     exit(EXIT_FAILURE);
  47   }
  48 }
  49
  50 #define HALLO "hallo there from dumb-client"
  51
  52 void write_hallo(void)
  53 {
  54   printf("writing hallo\n");
  55   ssize_t wrote =
  56     write(sfd, HALLO, sizeof HALLO);
  57   printf("wrote %d bytes.\n", wrote);
  58 }
  59
  60 static void header(void)
  61 {
  62   tomd_p("Tom's Client, Copyright (C) 2018 Thomas Balzer");
  63   tomd_p("GPL v3 or later license.");
  64 }
  65
  66 int main(int argc, char **argv)
  67 {
  68   header();
  69   init();
  70   write_hallo();
  71
  72   return EXIT_SUCCESS;
  73 }