install

#!/bin/bash

#small script to install ff-firmware to a plain openwrt repository as an "environment"
#this script should only be called once. After that normal git operations on the ff-firmware
#dir "env" and the openwrt package should be used.

FFBASE=$1
OWBASE="./"

FFFEEDNAME=FreiFunk

#Should the git repos be reset to their FETCH_HEAD?
#"yes" is the default because custom patches should be kept in FFBASE anyway
#and "yes" makes this script reappliable
RESETFETCHHEAD=yes

patchDirToGit(){
  local PATCHDIR=$1
  local GITCO=$2
  if [[ -z $PATCHDIR || -z $GITCO ]] ; then
    echo PATCHDIR and GITCO needed!
    return 1
  fi
  local MYGIT="git -C $GITCO"
  if [[ $RESETFETCHHEAD == "yes" ]]; then
    echo Resetting $GITCO to last fetched version
    $MYGIT reset --hard FETCH_HEAD
    echo
  fi
  for PATCH in $(ls $PATCHDIR/*.patch) ; do
    echo Test applying $PATCH to $GITCO
    if  $MYGIT apply --check --whitespace=nowarn $PATCH ; then
      echo Actually applying patch
      if $MYGIT am --whitespace=nowarn $PATCH ; then
        echo Success!
      else
        echo this should never happen...
        exit 1
      fi
    else
      echo Applying $PATCH failed!
      FAILEDPATCHES="${FAILEDPATCHES}Failed applying\n$PATCH\nto\n$GITCO\n"
      FAILEDPATCHES="${FAILEDPATCHES}\nTry calling \"git -C $GITCO am $PATCH\" manually. git will tell you more!\n\n"
      echo Has it already been applied?
    fi
  echo
done
echo Patching $GITCO done
echo
}


OWBASE=$(realpath $OWBASE)
echo Using OpenWRT base: $OWBASE
echo
#this is a very weak check for openwrt base...
if [[ ! -d $OWBASE &&  ! -f $OWBASE/feeds.config.default ]] ; then
  echo This script has to be called from a openWRT buildroot
  exit 1
fi

FFBASE=$(realpath $FFBASE)
echo Using FreiFunk base: $FFBASE
echo
if [[ -z $FFBASE || ! -d $FFBASE  ]] ; then
  echo We need a working copy of the firmware repository as a single argument
  exit 1
fi

FEEDSCRIPT=$OWBASE/scripts/feeds

if [[ -e $OWBASE/.config || -e $OWBASE/files ]] ; then
  
  if [[ -L $OWBASE/.config && -L $OWBASE/files ]] ; then
    #we won't delet things, so we can go on
    echo this will alter the symlinks $OWBASE/.config and $OWBASE/files
  else
    echo $OWBASE is not clean! .config and files would be overridden!
    exit 1
  fi
fi
#from here we assume a clean openWRT build root


if [[ -f feeds.conf ]] ; then
  if ! grep $FFFEEDNAME $OWBASE/feeds.conf ; then
    echo Adding FreiFunk packages to package feeds.conf
    echo src-link  $FFFEEDNAME $FFBASE/packages >> $OWBASE/feeds.conf
  else
    echo FreiFunk packages already installed
    echo
  fi
else
  echo Using default feeds.config
  cp $OWBASE/feeds.conf.default $OWBASE/feeds.conf
  echo src-link $FFFEEDNAME $FFBASE/packages >> $OWBASE/feeds.conf
fi
echo Patching openwrt
echo
patchDirToGit $FFBASE/patches/openwrt/ $OWBASE $OWBASE

echo Updating all packages
echo

$FEEDSCRIPT update -a

echo Patching upstream packages with FF-Packages
echo

echo Patching openwrt routing feed
echo
patchDirToGit $FFBASE/patches/routing/ $OWBASE/feeds/routing/

echo Patching openwrt packages feed
echo
patchDirToGit $FFBASE/patches/packages/ $OWBASE/feeds/packages/

if [[ -n $FAILEDPATCHES ]] ; then
  echo Unfortunatly applying these patches failed:
  echo -e $FAILEDPATCHES
  echo Please examine them and fix them.
  echo Thanks
fi

$FEEDSCRIPT install -a

#we have to link this after upgrading and installing because $FEEDSCRIPT will
#interfere with .config and dnsmasq will be installed :-(
echo Linking FF config
rm $OWBASE/.config
ln -s $FFBASE/.config $OWBASE/

echo Linking FF base files
echo
rm -rf $OWBASE/files
ln -s $FFBASE/files $OWBASE/files

echo
echo From here you should configure openwrt for the target device:
echo
echo make defconfig
echo make menuconfig
echo
echo Build it:
echo
echo make -j$(getconf _NPROCESSORS_ONLN)
echo
echo Have fun!