Mesh peer interfaces configuration

src/freedombone-client

 VERSION="1.01"
 
 # mesh networking settings
-BATMAN_IPV6=
+BRIDGE_BATMAN_IPV6=
+PEER_BATMAN_IPV6=
 
 # ssh (from https://stribika.github.io/2015/01/04/secure-secure-shell.html)
 SSH_CIPHERS="chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr"
 }
 
 function mesh_batman {
-  if [ ! $BATMAN_IPV6 ]; then
+  if [ ! $BRIDGE_BATMAN_IPV6 ]; then
       return
   fi
   sudo apt-get -y install iproute bridge-utils libnetfilter-conntrack3 batctl
       sudo echo 'batman_adv' >> /etc/modules
   fi
 
+  # If no address has been given then create a ramdom one
+  if [ ! $PEER_BATMAN_IPV6 ]; then
+      hexarray=( 1 2 3 4 5 6 7 8 9 0 a b c d e f )
+      a=${hexarray[$RANDOM%16]}${hexarray[$RANDOM%16]}${hexarray[$RANDOM%16]}${hexarray[$RANDOM%16]}
+      b=${hexarray[$RANDOM%16]}${hexarray[$RANDOM%16]}${hexarray[$RANDOM%16]}${hexarray[$RANDOM%16]}
+      c=${hexarray[$RANDOM%16]}${hexarray[$RANDOM%16]}${hexarray[$RANDOM%16]}${hexarray[$RANDOM%16]}
+      d=${hexarray[$RANDOM%16]}${hexarray[$RANDOM%16]}${hexarray[$RANDOM%16]}${hexarray[$RANDOM%16]}
+      PEER_BATMAN_IPV6="$IPV6_NETWORK:$a:$b:$c:$d"
+  fi
+
+  sudo cp /etc/network/interfaces ~/interfaces
+  if ! grep -q "# Mesh Networking (B.A.T.M.A.N)" ~/interfaces; then
+      echo '' >> ~/interfaces
+      echo '# Mesh Networking (B.A.T.M.A.N)' >> ~/interfaces
+      echo 'iface bat0 inet6 static' >> ~/interfaces
+      echo '    pre-up modprobe ipv6' >> ~/interfaces
+      echo "    address $PEER_BATMAN_IPV6" >> ~/interfaces
+      echo '    netmask 64' >> ~/interfaces
+      sudo mv ~/interfaces /etc/network/interfaces
+  else
+      sudo rm ~/interfaces
+  fi
+
   echo '#!/bin/bash' > /tmp/freedombone_mesh
   echo '' > /tmp/freedombone_mesh
   echo '# stop network manager to make the mesh network work' >> /tmp/freedombone_mesh
   echo '' >> /tmp/freedombone_mesh
   echo '# add the interface to the ad-hoc network - or create it.' >> /tmp/freedombone_mesh
   echo -n "iwconfig wlan0 mode ad-hoc essid mesh ap " >> /tmp/freedombone_mesh
-  echo "$BATMAN_IPV6 channel 2" >> /tmp/freedombone_mesh
+  echo "$BRIDGE_BATMAN_IPV6 channel 2" >> /tmp/freedombone_mesh
   echo '' >> /tmp/freedombone_mesh
   echo -n '# add wlan0 to the batman-adv virtual interface(so it can ' >> /tmp/freedombone_mesh
   echo 'communicate with other batman-adv nodes)' >> /tmp/freedombone_mesh
 
 function show_help {
     echo ''
-    echo 'freedombone-client --mesh-ip [mesh bridge IPv6 address]'
+    echo 'freedombone-client --bridge-ip [mesh bridge IPv6 address]'
     echo ''
     exit 0
 }
     -h|--help)
     show_help
     ;;
-    --mesh-ip)
+    --bridge-ip)
     shift
-    BATMAN_IPV6="$1"
+    BRIDGE_BATMAN_IPV6="$1"
     ;;
     *)
     # unknown option
 configure_ssh_client
 mesh_batman
 echo 'Configuration complete'
-if [[ $BATMAN_IPV6 ]]; then
+if [[ $BRIDGE_BATMAN_IPV6 ]]; then
     echo ''
     echo 'Type "sudo mesh" to connect to the mesh network'
 fi