aredn/files/usr/local/bin/nvram-setup

#!/usr/bin/perl -w
=for commnet

  Part of BBHN Mesh -- Used for creating Amateur Radio friendly mesh networks
  Copyright (C) 2015 Conrad Lara
   See Contributors file for additional contributors

  Copyright (c) 2013 David Rivenburg et al. BroadBand-HamNet

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation version 3 of the License.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.

=cut

# do the initial setup of the essential nvram variables
# node - node name
# mac2 - last 3 bytes of wifi mac address in the form ddd.ddd.ddd
# wifi_mac - full mac address of wireless card in the form hh:hh:hh:hh:hh:hh
#
# intended to run every boot but it should only actually do anything
# on the first boot

sub fail
{
    open(ERR, ">>/tmp/nvram_errors");
    print ERR "@_\n";
    close(ERR);
    die "@_\n";
}

$commit = 0;

# Added new wifimac parm, the radio0 wont startup without it, use pci device location
# may need to find a better way to allow for wider hardware support
chomp ($wifi_mac = `uci -c /etc/local/uci/ -q get hsmmmesh.settings.wifimac`);

if($wifi_mac eq "")
{
  open(FILE, "/sys/devices/pci0000:00/0000:00:00.0/ieee80211/phy0/macaddress") or fail("ERROR: wireless mac not available");
  while(<FILE>)
  {
    next unless /(\w\w:\w\w:\w\w:\w\w:\w\w:\w\w)/;
    $wifi_mac = $1;
    last;
  }
  close(FILE);
  fail("ERROR: wireless mac not found") if $wifi_mac eq "";
  system "uci -c /etc/local/uci/ set hsmmmesh.settings.wifimac=$wifi_mac";
  $commit = 1;
}


chomp ($mac2 = `uci -c /etc/local/uci/ -q get hsmmmesh.settings.mac2`);

if($mac2 eq "")
{
  open(FILE, "/sys/devices/pci0000:00/0000:00:00.0/ieee80211/phy0/macaddress") or fail("ERROR: wireless mac not available");
  while(<FILE>)
  {
    next unless /\w\w:\w\w:\w\w:(\w\w):(\w\w):(\w\w)/;
    $mac2 = join ".", hex $1, hex $2, hex $3;
    last;
  }
  close(FILE);
  fail("ERROR: wireless mac not found") if $mac2 eq "";
  system "uci -c /etc/local/uci/ set hsmmmesh.settings.mac2=$mac2";
  $commit = 1;
}

chomp ($node = `uci -c /etc/local/uci/ -q get hsmmmesh.settings.node`);

if($node eq "")
{
    $mac2 =~ s/\./-/g;
    $node = "NOCALL-$mac2";
    system "uci -c /etc/local/uci/ set hsmmmesh.settings.node=NOCALL-$mac2";
    $commit = 1;
}

chomp ($dtdmac = `uci -c /etc/local/uci/ -q get hsmmmesh.settings.dtdmac`);                                         

if($dtdmac eq "")                                                                                                   
{                                                                                                                   
                                                                                                                    
  open(FILE, "/sbin/ifconfig eth0 |") or fail("ERROR: eth0 mac not available");                                     
  while(<FILE>)                                                                                                     
  {                                                                                                                 
    next unless /\w\w:\w\w:\w\w:(\w\w):(\w\w):(\w\w)/;                                                              
    $dtdmac = join ".", hex $1, hex $2, hex $3;                                                                     
    last;                                                                                                           
  }                                                                                                                 
  close(FILE);                                                                                                      
  system "uci -c /etc/local/uci/ set hsmmmesh.settings.dtdmac=$dtdmac";                                             
  $commit = 1;                                                                                                      
}         


system "uci -c /etc/local/uci/ commit" if $commit;