#!/bin/sh
# -*- sh -*-

: << =cut

=head1 NAME

chilli_sessions_ - Wildcard-plugin to monitor sessions state on Coova Chilli.

=head1 DESCRIPTION

This wildcard plugin is for monitor the number of device with state pass/dnat/none on Coova Chilli instances.

=head1 CONFIGURATION

This plugin does not normally require configuration.

The plugin may need to run as root. This is configured like this:

  [chilli_sessions_*]
      user root

This is a wildcard plugin. To monitor an instance, link
chilli_sessions_<instance> to this file. For example :

  ln -s /usr/share/munin/plugins/chilli_sessions_ \
        /etc/munin/plugins/chilli_sessions_hotspot1

will monitor hotspot1.

For monitor all instances use :

  ln -s /usr/share/munin/plugins/chilli_sessions_ \
        /etc/munin/plugins/chilli_sessions_total

=head1 AUTHOR

OPENevents - Guillaume Marsay <guillaume.marsay@openevents.fr>

=head1 LICENSE

GPLv2

=head1 MAGIC MARKERS

 #%# family=auto
 #%# capabilities=autoconf suggest

=cut


INSTANCE="${0##*chilli_}"
CHILLI_PATH_BIN="/usr/sbin/chilli_query"
CHILLI_PATH_SOCK="/var/run"


case "$1" in
  autoconf)
    if [ -r "$CHILLI_PATH_BIN" ]; then
      if [ "$INSTANCE" = "total" ]; then
        echo "yes"
        exit 0
      else
        if [ -r $CHILLI_PATH_SOCK/chilli_"$INSTANCE".sock ]; then
          echo "yes"
          exit 0
        else
          echo "no ($CHILLI_PATH_SOCK/chilli_$INSTANCE.sock not found)"
          exit 0
        fi
      fi
    else
      echo "no ($CHILLI_PATH_BIN not found)"
      exit 0
    fi
    ;;
  suggest)
      find "$CHILLI_PATH_SOCK/" -name "chilli_*.sock" | while read file; do
        basename "$file" .sock | cut -d _ -f 2
      done

      echo "total"

      exit 0
    ;;
  config)
    echo "graph_title Chilli $INSTANCE sessions"
    echo "graph_args --base 1000 -l 0"
    echo "graph_category wireless"
    echo "none.label NONE"
    echo "none.min 0"
    echo "none.draw AREA"
    echo "none.colour ff8000"
    echo "dnat.label DNAT"
    echo "dnat.min 0"
    echo "dnat.draw STACK"
    echo "dnat.colour 0066b3"
    echo "pass.label PASS"
    echo "pass.draw STACK"
    echo "pass.min 0"
    echo "pass.colour 00cc00"

    exit 0
    ;;
esac

if [ "$INSTANCE" = "total" ]; then
  STATE_PASS=$("$CHILLI_PATH_BIN" list | grep -wc "pass")
  STATE_DNAT=$("$CHILLI_PATH_BIN" list | grep -wc "dnat")
  STATE_NONE=$("$CHILLI_PATH_BIN" list | grep -wc "none")
else
  STATE_PASS=$("$CHILLI_PATH_BIN" -s "$CHILLI_PATH_SOCK/chilli_$INSTANCE.sock" list | grep -wc "pass")
  STATE_DNAT=$("$CHILLI_PATH_BIN" -s "$CHILLI_PATH_SOCK/chilli_$INSTANCE.sock" list | grep -wc "dnat")
  STATE_NONE=$("$CHILLI_PATH_BIN" -s "$CHILLI_PATH_SOCK/chilli_$INSTANCE.sock" list | grep -wc "none")
fi

echo "pass.value $STATE_PASS"
echo "dnat.value $STATE_DNAT"
echo "none.value $STATE_NONE"