Connects AFP shares (or any URL/path compatible with open really) depending on currently connected wifi network. Ideally executed using `cron` or `launchd`

wifi-mount.sh

#!/usr/bin/env bash

PROGRAM_NAME=`basename $0`

DEBUG=false
TARGET_ROUTER_MAC=()
SHARE=()

function debug {
  [ $DEBUG == true ] && echo "$1"
}

ARGS=`getopt t:s:dh "$@"`

if [ $? != 0 ] || [ $# -lt 1 ] ; then
  echo "Error parsing arguments. Try $PROGRAM_NAME -h" > /dev/stderr
  exit 2
fi

eval set -- "$ARGS"
while true; do
  case $1 in
    -t)
      TARGET_ROUTER_MAC+=("$2"); shift 2; continue
    ;;
    -s)
      SHARE+=("$2"); shift 2; continue
    ;;
    -d)
      DEBUG=true; shift; continue
    ;;
    -h)
      BA="\033[1m"
      BD="\033[0m"
      UA=`tput smul`
      UD=`tput rmul`

      echo "$PROGRAM_NAME"
      echo ""
      echo -e "${BA}USAGE${BD}"
      echo -e "    $PROGRAM_NAME [${BA}-dh${BD}] ${BA}-t${BD} ${UA}target_mac${UD} ${BA}-s${BD} ${UA}share_url${UD}"
      echo ""
      echo -e "${BA}GENERAL${BD}"
      echo -e "    Connects AFP shares (or any URL/path compatible with ${BA}open${BD} really) depending on currently connected wifi network."
      echo ""
      echo -e "${BA}OPTIONS${BD}"
      echo -e "    ${BA}-t${BD} ${UA}target_mac${UD}"
      echo "          MAC address of the target router(s)"
      echo ""
      echo -e "    ${BA}-s${BD} ${UA}share_url${UD}"
      echo "          URL of share(s) to connect for the given target MAC address(es),
          on the form afp://[user[:password]@]host/share_name"
      echo ""
      echo -e "    ${BA}-h${BD}    Display help"
      echo ""
      echo -e "    ${BA}-d${BD}    Display debugging messages"
      echo ""
      exit 0
    ;;
    --)
        # no more arguments to parse
        shift
        break
    ;;
    *)
        printf "Unknown option %s\n" "$1"
        exit 1
    ;;
  esac
done

ROUTER_IP=`netstat -rnf inet | grep default | awk {'print$2'}`
ROUTER_MAC=`netstat -rnf inet | grep -v link | grep -w ^$ROUTER_IP | awk {'print$2'}`

debug "Connected to router with MAC address $ROUTER_MAC"
debug "Will connect shares: $(IFS=", " ; echo "${SHARE[*]}")"
debug "If router MAC is: $(IFS=", " ; echo "${TARGET_ROUTER_MAC[*]}")"

if [ "$ROUTER_MAC" == "" ]; then
  debug "Not connected, exiting."
  # un_mount

  exit 0
fi

for TARGET_MAC in "${TARGET_ROUTER_MAC[@]}" ; do

  debug "Trying MAC $TARGET_MAC"

  if ! [ $TARGET_MAC == $ROUTER_MAC ]; then
    debug "    Not at target wifi"
    # un_mount
  fi

  if [ $TARGET_MAC == $ROUTER_MAC ]; then
    debug "    Connected to target wifi"

    for S in "${SHARE[@]}" ; do
      debug "    Connecting to share $S"

      DIR=`basename "$S"`

      if ! [ -d "/Volumes/$DIR" ] ; then
        open "$S"
      fi
    done
  fi
done

exit 0