dumbwifi

   1 #!/bin/bash
   2
   3 log=/var/log/dumbwifi
   4
   5 home_essid=
   6 home_key=
   7 office_essid=
   8 office_key=
   9
  10 essid=$home_essid
  11 key=$home_key
  12
  13 wire=eth0
  14 wifi=eth1
  15
  16 while true; do
  17         /sbin/ifconfig $wire 2>/dev/null | grep "inet addr" &>/dev/null || \
  18         /sbin/ifconfig $wifi 2>/dev/null | grep "inet addr" &>/dev/null
  19         if [ $? != 0 ]; then
  20                 echo "Checking for ip... none"
  21
  22                 time_start=$(date +%s)
  23
  24                 echo -n "Checking for ethernet link... "
  25                 ifconfig $wire up 2>/dev/null
  26                 mii-tool $wire 2>/dev/null | grep "link ok" &>/dev/null
  27                 if [ $? = 0 ]; then
  28                         echo "yes"
  29                         iface=$wire
  30                 else
  31                         echo "none, use wifi"
  32                         iface=$wifi
  33                 fi
  34
  35                 # pick wifi net
  36                 if [[ $iface = $wifi ]]; then
  37                         echo -n "Scan for wifi networks... "
  38                         scandata=$(iwlist $wifi scan 2>/dev/null)
  39                         if [ ! "$scandata" ]; then
  40                                 essid=
  41                                 echo "scan failed"
  42                         elif echo "$scandata" | grep "$home_essid" &>/dev/null; then
  43                                 essid=$home_essid; key=$home_key
  44                                 echo "$essid"
  45                         elif echo "$scandata" | grep "$uu_essid" &>/dev/null; then
  46                                 essid=$uu_essid; key=$uu_key
  47                                 echo "$essid"
  48                         else
  49                                 essid=
  50                                 echo "none"
  51                         fi
  52
  53                         if [ -n "$essid" ]; then
  54                                 iwconfig eth1 essid "$essid" key "$key" >>$log 2>&1
  55                         fi
  56                 fi
  57
  58                 if [[ $iface = $wifi ]] && [ "$essid" ] || [[ $iface = $wire ]]; then
  59                         pkill dhclient >>$log 2>&1
  60                         ifconfig $iface up >>$log 2>&1
  61
  62                         echo -n "Request ip... "
  63                         dhclient $iface >>$log 2>&1
  64                         if [ $? = 0 ]; then
  65                                 time_stop=$(date +%s)
  66                                 timer=$(($time_stop - $time_start))
  67                                 dur=" [${timer}s]"
  68                                 echo "ok $dur"
  69                         else
  70                                 echo "failed $dur"
  71                         fi
  72
  73                 fi
  74         fi
  75
  76         if ! ps axf | grep sshd &>/dev/null; then
  77                 /usr/sbin/sshd >>$log 2>&1
  78         fi
  79
  80         sleep 1
  81 done