#!/bin/bash
#
# Common functions
#

# Location of CocoaDialog

CD=$ROOTDIR/CocoaDialog.app/Contents/MacOS/CocoaDialog
export CD

#
# Set value for a given keyword
#
# $1 = config file name
# $2 = section (without [])
# $3 = config keyword
# $4 = new value
#
# For some reason sed is having hard time with tabs (\t)
# Work around: use tr to translate it to space.
#
# NOTE: These macros will fail for the last section since it does not contain the ending [ !!!!
# Fortunately this is about DHT...   [FIXME]

editconf () {

  tr '\t' ' ' < $1 | sed -e "/^\[$2\]/,/^\[/s!^$3 *=[^\n\r]*!$3 = $4!" > $1.tmp
  mv -f $1.tmp $1
}

#
# Get current value of given keyword
#
# $1 = config file
# $2 = section
# $3 = keyword name
cv=""
getconf() {

  cv=`tr '\t' ' ' < $1 | sed -e "/^\[$2\]/,/^\[/s+^$3 *=+MARKERXX+" | fgrep MARKERXX | sed -e s/MARKERXX// | tr -d \ `
}

#
# Make sure given keyword setting is not commented out
#
# $1 = config file
# $2 = section
# $3 = keyword
#
uncomm() {

  tr '\t' ' ' < $1 | sed -e "/^\[$2\]/,/^\[/s+^# *$3 *=+$3 =+" > $1.tmp
  mv $1.tmp $1
}

#
# Make sure given keyword setting is commented out
#
# $1 = config file
# $2 = section
# $3 = keyword
#
comm() {

  tr '\t' ' ' < $1 | sed -e "/^\[$2\]/,/^\[/s+^ *$3 *=+# $3 =+" > $1.tmp
  mv $1.tmp $1
}

# If gnunet directory does not exist then generate new configuration
gnetconf() {
# Compatibility checks
  if [ -d ~/.gnunet -a ! -d ~/gnunet ]; then
    mv ~/.gnunet ~/gnunet
  fi
  if [ -d ~/.gnunet -a -h ~/gnunet ]; then
    rm ~/gnunet
    mv ~/.gnunet ~/gnunet
  fi

  if [ ! -d ~/gnunet ]; then
    mkdir -p ~/gnunet
    mkdir -p ~/gnunet/data
    mkdir -p ~/gnunet/data/hosts
    cp $ROOTDIR/hosts/* ~/gnunet/data/hosts > /dev/null 2>&1
# These don't belong to any section
    sed -e "/^GNUNETD_HOME/s-/var/lib/GNUnet-~/gnunet-" < $ROOTDIR/etc/gnunet.root > ~/gnunet/gnunet.root
    sed -e "/^GNUNET_HOME/s-~/.gnunet-~/gnunet-" < $ROOTDIR/etc/gnunet.user > ~/gnunet/gnunet.conf
# Locate active network interface (e.g. en0 or en1)
    act1=`ifconfig en0 2> /dev/null | grep inet | wc -l`
    act2=`ifconfig en1 2> /dev/null | grep inet | wc -l`

    if [ $act1 -gt 0 ]; then
       in=en0
    elif [ $act2 -gt 0 ]; then
       in=en1
    else
       in=unknown
    fi
    ip=`ifconfig $in | grep inet\  | cut -f2 | cut -d\  -f2`
    editconf ~/gnunet/gnunet.root NETWORK INTERFACE $in
    editconf ~/gnunet/gnunet.root LOAD INTERFACES $in
    editconf ~/gnunet/gnunet.root AFS DATABASETYPE sqlite
  fi
  rm ~/.gnunet
  ln -sf ~/gnunet ~/.gnunet
}

# This function finds out if gnunetd is running
# 0 = not running, 1 = running. Global variable pid gives the process pid.
#
pid=0
cgnunetd() {

  if [ -e ~/gnunet/gnunetd.pid ]; then
    pid=`cat ~/gnunet/gnunetd.pid`
    if [ `ps -p $pid | wc -l` == 2 ]; then
      return
    fi
  fi
  pid=0
  return
}

#
# Update Pango files
#
pango() {

  mkdir -p ~/gnunet/pango
  PANGO_RC_FILE=~/gnunet/pango/pango.rc
  export PANGO_RC_FILE
  cat << E_O_F > $PANGO_RC_FILE
[Pango]
ModuleFiles=$HOME/gnunet/pango/pango.modules
E_O_F
  cp $ROOTDIR/etc/pangox.aliases ~/gnunet/pango
  pth=`fgrep ModulesPath $ROOTDIR/etc/pango.modules | cut -d\  -f4`
  sed -e "s-$pth-$ROOTDIR/pango-g" < $ROOTDIR/etc/pango.modules > ~/gnunet/pango/pango.modules
}

#
# Track version changes
#
checkversion() {

  CURRENT=`$ROOTDIR/bin/gnunetd -v | cut -d\  -f2 | cut -c2-`
  if [ ! -f ~/gnunet/VERSION ]; then
    echo $CURRENT > ~/gnunet/VERSION
  fi
  VERSION=`cat ~/gnunet/VERSION`
  if [ $VERSION != $CURRENT ]; then
    $CD msgbox --text "Version change detected! Please run Update GNUnet database in Configuration section" --button1 "OK"
  fi
}