backup.sh

#!/bin/bash

. $(dirname $0)/config

function usage {
    echo "usage: $0 DEVICE USER_ID|all PACKAGES...|all"
    echo "exam1: $0 XXXXXX all all"
    echo "exam2: $0 XXXXXX 0 com.google.android.youtube"
}
if [ ! "$1" ]; then
    usage
    $A0 devices
    exit 1
fi

DEVICE=$1
shift
AUID=$1
shift
PKG=$1

A="$A0 -s $DEVICE"
AS="$A shell"

if [ -z "$AUID" -o -z "$PKG" ]; then
  usage
  exit 0
fi


mkdir -p $LBASE/{apks,data}

PKGS="$*"
AUIDS="$AUID"

# Backup all installed packages?
if [ "$PKG" = "all" ]; then
  PKGS="$(cat $LBASE/pall.txt)"
fi

if [ "$AUID" = "all" ]; then
  #PRE-REQUISITE BEFORE ENTER RECOVERY:
  #  adb shell "pm list users | grep 'UserInfo' | cut -f1 -d':' | cut -f2 -d'{' > $LBASE/alluser.txt"
  AUIDS="$(cat $LBASE/alluser.txt)"
fi

if [ -z "$($AS mount | grep 'on /data')" ]; then
	$AS mount /dev/block/by-name/userdata /data
fi

for AUID in $AUIDS; do
  echo "Creating backup for AUID $AUID.."
  UPKGS="$(cat $LBASE/puser_${AUID}.txt)"
  mkdir -p $LBASE/data/$AUID
  for PKG in $PKGS; do
    if [ "$($AS [ -d /data/app/$PKG-* ] && echo 1)" ]; then
    	APKNUM=$($AS ls /data/app/$PKG-*/*apk | wc -l)
		DIRNAME=$(dirname $($AS ls /data/app/$PKG-*/*apk | head -n1))
    elif [ "$($AS [ -d /data/app/*/$PKG-* ] && echo 1)" ]; then	#APP IN SUBDIR
    	APKNUM=$($AS ls /data/app/*/$PKG-*/*apk | wc -l)
		DIRNAME=$(dirname $($AS ls /data/app/*/$PKG-*/*apk | head -n1))
	else
		APKNUM=0
	fi
    if [ $APKNUM -gt 0 ]; then
      echo "  Backing up package $PKG.."
      #MULTIPLE APKS
      if [ -d "$LBASE/apks/$PKG" ] || [ -f "$LBASE/apks/$PKG.apk" ]; then
        echo "    $PKG already backed up."
      else	#BACKUP APKS
        printf "    pulling apk.."
        if [ $APKNUM -gt 1 ]; then	#MULTIPLE APKS
          mkdir -p "$LBASE/apks/$PKG"
          for APKFILE in $( $AS ls $DIRNAME/*apk | tr -d '\r' ); do
            $A pull $APKFILE $LBASE/apks/$PKG/
          done
        else	#SINGLE APK
          for APKFILE in "$( $AS ls $DIRNAME/base.apk | tr -d '\r' )"; do
            $A pull $APKFILE $LBASE/apks/$PKG.apk
          done
        fi
        echo "    done."
      fi

      if [ $AUID -eq 0 ]; then
        USERDATA=/data/data
      else
        USERDATA=/data/user/$AUID
      fi
      if [[ "$UPKGS" == *"$PKG"* ]]; then 
        if [ "$($AS [ -d $USERDATA/$PKG ] && echo 1)" ]; then
          printf "    backing up userdata.."
          $AS "tar c -C $USERDATA -f /sdcard/$PKG-user.tar $PKG"
          $A pull /sdcard/$PKG-user.tar $LBASE/data/$AUID/
          $AS rm /sdcard/$PKG-user.tar
          echo "    done."
        fi
        if [ "$($AS [ -d /data/media/$AUID/Android/data/$PKG ] && echo 1)" ]; then
          printf "    backing up media.."
          $AS "tar c -C /data/media/$AUID/Android/data -f /sdcard/$PKG-media.tar $PKG"
          $A pull /sdcard/$PKG-media.tar $LBASE/data/$AUID/
          $AS rm /sdcard/$PKG-media.tar
          echo "    done."
        fi
      else
        echo "    package $PKG is not enabled for user $AUID"
        touch $LBASE/data/$AUID/$PKG.disabled
      fi
      echo "  done."
    fi
  done
  echo "done."
  if [ "$($AS [ -f /data/system/users/$AUID/accounts.db ] && echo 1)" ] ; then
    printf "Creating backup of accounts.db .."
    $A pull /data/system/users/$AUID/accounts.db $LBASE/data/$AUID/
    #RESTORE: $A push $LBASE/data/$AUID/accounts.db /data/system/users/$AUID/
    echo "done."
  fi
done
if [ "$($AS [ -f /data/system/sync/accounts.xml ] && echo 1)" ]; then
  printf "Creating backup of accounts.xml .."
  $A pull /data/system/sync/accounts.xml $LBASE/data/
  #RESTORE: $A push $LBASE/data/accounts.xml /data/system/sync/
  echo "done."
fi

find $LBASE

echo "Backup complete. Now, please reboot to normal (adb -s $DEVICE reboot)."