test/connect.cxx

   1 //
   2 // "$Id: connect.cxx 7913 2010-11-29 18:18:27Z greg.ercolano $"
   3 //
   4 // PPP example program for the Fast Light Tool Kit (FLTK).
   5 //
   6 // Program to make a button to turn a ppp connection on/off.
   7 // You must chmod +s /usr/sbin/pppd, and put all the options
   8 // into /etc/ppp/options.
   9 //
  10 // Copyright 1998-2010 by Bill Spitzak and others.
  11 //
  12 // This library is free software; you can redistribute it and/or
  13 // modify it under the terms of the GNU Library General Public
  14 // License as published by the Free Software Foundation; either
  15 // version 2 of the License, or (at your option) any later version.
  16 //
  17 // This library is distributed in the hope that it will be useful,
  18 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20 // Library General Public License for more details.
  21 //
  22 // You should have received a copy of the GNU Library General Public
  23 // License along with this library; if not, write to the Free Software
  24 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  25 // USA.
  26 //
  27 // Please report all bugs and problems on the following page:
  28 //
  29 //     http://www.fltk.org/str.php
  30 //
  31
  32 #include <stdlib.h>
  33 #include <stdio.h>
  34 #include <unistd.h>
  35 #include <signal.h>
  36 #include <sys/wait.h>
  37
  38 #include <FL/Fl.H>
  39 #include <FL/Fl_Window.H>
  40 #include <FL/Fl_Toggle_Button.H>
  41
  42 int running;    // actually the pid
  43 Fl_Toggle_Button *Button;
  44
  45 void sigchld(int) {
  46   waitpid(running, 0, 0);
  47   running = 0;
  48   Button->value(0);
  49 }
  50
  51 void cb(Fl_Widget *o, void *) {
  52   if (((Fl_Toggle_Button*)o)->value()) {
  53     if (running) return;
  54     running = fork();
  55     if (!running) execl("/usr/sbin/pppd","pppd","-detach",0);
  56     else signal(SIGCHLD, sigchld);
  57   } else {
  58     if (!running) return;
  59     kill(running, SIGINT);
  60     waitpid(running, 0, 0);
  61     running = 0;
  62   }
  63 }
  64
  65 int main(int argc, char ** argv) {
  66    Fl_Window window(100,50);
  67    Fl_Toggle_Button button(0,0,100,50,"Connect");
  68    Button = &button;
  69    button.color(1,2);
  70    button.callback(cb,0);
  71    window.show(argc,argv);
  72    return Fl::run();
  73 }
  74
  75 //
  76 // End of "$Id: connect.cxx 7913 2010-11-29 18:18:27Z greg.ercolano $".
  77 //