sprint_fix.sh

#!/bin/sh

rm -f /tmp/cellid

while [ ! -f /tmp/cellid ]
do
  LCELL=`grep -m 1 "Cell ID" /tmp/atlog | cut -d "(" -f3 | cut -d ")" -f1`
  if [[ ${#LCELL} -gt 1 ]]
  then
      echo $LCELL > /tmp/cellid
  fi
  sleep 5
done

while true
do
  DATE=$(date +%c)
  if grep -i -m 1 -q 'at!band=\d\d' /tmp/atlog
  then
      /sbin/ifdown wan1 ; /sbin/ifup wan1
      echo "$DATE : Cell was changed manually." >> /usr/lib/rooter/log/connect.log
      echo "$DATE : Reset WAN1 interface to restore connection." >> /usr/lib/rooter/log/connect.log
      while grep -i -m 1 -q "at!band=\d\d" /tmp/atlog
      do
        sleep 5
      done
      LCELL=`grep -m 1 "Cell ID" /tmp/atlog | cut -d "(" -f3 | cut -d ")" -f1`
      while [ ${#LCELL} -lt 4 ]
      do
        LCELL=`grep -m 1 "Cell ID" /tmp/atlog | cut -d "(" -f3 | cut -d ")" -f1`
        sleep 5
      done
      ICELL=`cat /tmp/cellid`
      if [[ "$ICELL" = "$LCELL" ]]
       then
           /sbin/ifdown wan1 ; /sbin/ifup wan1
      fi
      echo $LCELL > /tmp/cellid
  else
       LCELL=`cat /tmp/cellid`
       ACELL=`grep -m 1 "Cell ID" /tmp/atlog | cut -d "(" -f3 | cut -d ")" -f1`
       if [[ ${#ACELL} -gt 1 && "$ACELL" != "$LCELL" ]]
       then
           /sbin/ifdown wan1 ; /sbin/ifup wan1
           echo "$DATE : Cell ID changed from $LCELL to $ACELL." >> /usr/lib/rooter/log/connect.log
           echo "$DATE : Reset WAN1 interface to restore connection." >> /usr/lib/rooter/log/connect.log
           echo $ACELL > /tmp/cellid
       fi
  fi
  sleep 5
done