#!/bin/sh
#
#    Licensed to the Apache Software Foundation (ASF) under one or more
#    contributor license agreements.  See the NOTICE file distributed with
#    this work for additional information regarding copyright ownership.
#    The ASF licenses this file to You under the Apache License, Version 2.0
#    (the "License"); you may not use this file except in compliance with
#    the License.  You may obtain a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS,
#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#    See the License for the specific language governing permissions and
#    limitations under the License.
#

realpath() {
  # Use in priority xpg4 awk or nawk on SunOS as standard awk is outdated
  AWK=awk
  if ${solaris}; then
      if [ -x /usr/xpg4/bin/awk ]; then
          AWK=/usr/xpg4/bin/awk
      elif [ -x /usr/bin/nawk ]; then
          AWK=/usr/bin/nawk
      fi
  fi

  READLINK_EXISTS=`command -v readlink &> /dev/null`
  BINARY_NAME=`basename "${1}"`
  if [ -z "$READLINK_EXISTS" ]; then
    OURPWD="`pwd`"
    cd "`dirname "${1}"`" || exit 2
    LINK=`ls -l "${BINARY_NAME}" | ${AWK} -F"-> " '{print $2}'`
    while [ "${LINK}" ]; do
        echo "link: ${LINK}" >&2
        cd "`dirname "${LINK}"`" || exit 2
        LINK=`ls -l "${BINARY_NAME}" | ${AWK} -F"-> " '{print $2}'`
    done
    REALPATH="`pwd`/${BINARY_NAME}"
    cd "${OURPWD}" || exit 2
    echo "${REALPATH}"
  else
    OURPWD="`pwd`"
    cd "`dirname "${1}"`" || exit 2
    LINK=`readlink "${BINARY_NAME}"`
    while [ "${LINK}" ]; do
        echo "link: ${LINK}" >&2
        cd "`dirname "${LINK}"`" || exit 2
        LINK=`readlink "${BINARY_NAME}"`
    done
    REALPATH="`pwd`/${BINARY_NAME}"
    cd "${OURPWD}" || exit 2
    echo "${REALPATH}"
  fi
}

REALNAME=`realpath "$0"`
DIRNAME=`dirname "${REALNAME}"`
PROGNAME=`basename "${REALNAME}"`
LOCAL_CLASSPATH=$CLASSPATH

#
# Load common functions
#
. "${DIRNAME}/inc"

#
# Sourcing environment settings for karaf similar to tomcats setenv
#
KARAF_SCRIPT="${PROGNAME}"
export KARAF_SCRIPT
if [ -f "${DIRNAME}/setenv" ]; then
  . "${DIRNAME}/setenv"
fi

forceNoRoot() {
    # If configured, prevent execution as root
    if [ "${KARAF_NOROOT}" ] && [ "`id -u`" -eq 0 ]; then
        die "Do not run as root!"
    fi
}

setupClassPath() {
    # Add the jars in the lib dir
    for file in "${KARAF_HOME}"/lib/boot/*.jar
    do
        if [ -z "${CLASSPATH}" ]; then
            CLASSPATH="${file}"
        else
            CLASSPATH="${CLASSPATH}:${file}"
        fi
    done
    if [ "${VERSION}" -gt "8" ] ; then
        for file in "${KARAF_HOME}"/lib/jdk9plus/*.jar
        do
            if [ -z "${CLASSPATH}" ]; then
                CLASSPATH="${file}"
            else
                CLASSPATH="${CLASSPATH}:${file}"
            fi
        done
    fi
}

checkRootInstance() {
   ROOT_INSTANCE_RUNNING=false
   if [ -f "${KARAF_HOME}/instances/instance.properties" ];
   then
      ROOT_INSTANCE_PID=`sed -n -e '/item.0.pid/ s/.*\= *//p' "${KARAF_HOME}/instances/instance.properties"`
      ROOT_INSTANCE_NAME=`sed -n -e '/item.0.name/ s/.*\= *//p' "${KARAF_HOME}/instances/instance.properties"`
      if [ "${ROOT_INSTANCE_PID}" -ne "0" ]; then
          if ps -p "${ROOT_INSTANCE_PID}" > /dev/null
          then
              MAIN=org.apache.karaf.main.Main
              PID_COMMAND=`"${PS_PREFIX}"ps -p "${ROOT_INSTANCE_PID}" -o args | sed 1d`

              if [ "${PID_COMMAND#*$MAIN}" != "$PID_COMMAND" ]; then
                ROOT_INSTANCE_RUNNING=true
              fi
          fi
      fi
   fi
}

init() {
    # Prevent root execution if configured
    forceNoRoot

    # Determine if there is special OS handling we must perform
    detectOS

    # Unlimit the number of file descriptors if possible
    unlimitFD

    # Locate the Karaf home directory
    locateHome

    # Locate the Karaf base directory
    locateBase

    # Locate the Karaf data directory
    locateData

    # Locate the Karaf etc directory
    locateEtc

    # Locate the Karaf log directory
    locateLog

    # Setup the native library path
    setupNativePath

    # Locate the Java VM to execute
    locateJava

    # Determine the JVM vendor
    detectJVM

    # Determine the JVM version >= 1.6
    checkJvmVersion

    # Check if a root instance is already running
    checkRootInstance

    # Setup default options
    setupDefaults

    # Setup classpath
    setupClassPath

    # Install debug options
    setupDebugOptions

}

run() {
    OPTS="-Dkaraf.startLocalConsole=true -Dkaraf.startRemoteShell=true"
    MAIN=org.apache.karaf.main.Main
    if [ "x$CHECK_ROOT_INSTANCE_RUNNING" = "x" ]; then
        CHECK_ROOT_INSTANCE_RUNNING=true
    fi
    JAVA_ENDORSED_DIRS="${JAVA_HOME}/jre/lib/endorsed:${JAVA_HOME}/lib/endorsed:${KARAF_HOME}/lib/endorsed"
    JAVA_EXT_DIRS="${JAVA_HOME}/jre/lib/ext:${JAVA_HOME}/lib/ext:${KARAF_HOME}/lib/ext"
    if ${cygwin}; then
        JAVA_HOME=`cygpath --path --windows "${JAVA_HOME}"`
        JAVA_ENDORSED_DIRS=`cygpath --path --windows "${JAVA_ENDORSED_DIRS}"`
        JAVA_EXT_DIRS=`cygpath --path --windows "${JAVA_EXT_DIRS}"`
    fi
    convertPaths
    cd "${KARAF_BASE}" || exit 2

    if [ -z "${KARAF_EXEC}" ]; then
        KARAF_EXEC=""
    fi

    debug=false
    debugs=false
    nodebug=false
    while [ "${1}" != "" ]; do
        case "${1}" in
            'clean')
                rm -rf "${KARAF_DATA:?}"
                shift
                ;;
            'debug')
                debug=true
                shift
                ;;
            'debugs')
                debug=true
                debugs=true
                shift
                ;;
            'status')
                MAIN=org.apache.karaf.main.Status
                CHECK_ROOT_INSTANCE_RUNNING=false
                nodebug=true
                shift
                ;;
            'stop')
                MAIN=org.apache.karaf.main.Stop
                CHECK_ROOT_INSTANCE_RUNNING=false
                nodebug=true
                shift
                ;;
            'console')
                CHECK_ROOT_INSTANCE_RUNNING=false
                shift
                ;;
            'server')
                OPTS="-Dkaraf.startLocalConsole=false -Dkaraf.startRemoteShell=true"
                shift
                ;;
            'run')
                OPTS="-Dkaraf.startLocalConsole=false -Dkaraf.startRemoteShell=true -Dkaraf.log.console=ALL"
                shift
                ;;
            'daemon')
                OPTS="-Dkaraf.startLocalConsole=false -Dkaraf.startRemoteShell=true"
                KARAF_DAEMON="true"
                KARAF_EXEC="exec"
                shift
                ;;
            'client')
                OPTS="-Dkaraf.startLocalConsole=true -Dkaraf.startRemoteShell=false"
                CHECK_ROOT_INSTANCE_RUNNING=false
                nodebug=true
                shift
                ;;
            'classpath')
                echo "Classpath: ${CLASSPATH}"
                shift
                ;;
            *)
                break
                ;;
        esac
    done

    if ${nodebug}; then
        debug=false
    fi
    if ${debug}; then
        if [ "x${JAVA_DEBUG_OPTS}" = "x" ]; then
            if ${debugs}; then
                JAVA_DEBUG_OPTS="${DEFAULT_JAVA_DEBUGS_OPTS}"
            else
                JAVA_DEBUG_OPTS="${DEFAULT_JAVA_DEBUG_OPTS}"
            fi
        fi
        JAVA_OPTS="${JAVA_DEBUG_OPTS} ${JAVA_OPTS}"
    fi

    while true; do
        # When users want to update the lib version of, they just need to create
        # a lib.next directory and on the new restart, it will replace the current lib directory.
        if [ -d "${KARAF_HOME:?}/lib.next" ] ; then
            echo "Updating libs..."
            rm -rf "${KARAF_HOME:?}/lib"
            mv -f "${KARAF_HOME:?}/lib.next" "${KARAF_HOME}/lib"

            echo "Updating classpath..."
            CLASSPATH=$LOCAL_CLASSPATH
            setupClassPath
        fi

        # Ensure the log directory exists
        # We may need to have a place to redirect stdout/stderr
        if [ ! -d "${KARAF_LOG}" ]; then
            mkdir -p "${KARAF_LOG}"
        fi
        if [ ! -d "${KARAF_DATA}/tmp" ]; then
            mkdir -p "${KARAF_DATA}/tmp"
        fi

        if [ "${ROOT_INSTANCE_RUNNING}" = "false" ] || [ "${CHECK_ROOT_INSTANCE_RUNNING}" = "false" ] ; then
            if [ "${VERSION}" -gt "8" ]; then
                ${KARAF_EXEC} "${JAVA}" ${JAVA_OPTS} \
                    --add-reads=java.xml=java.logging \
                    --add-exports=java.base/org.apache.karaf.specs.locator=java.xml,ALL-UNNAMED \
                    --patch-module java.base=lib/endorsed/org.apache.karaf.specs.locator-4.2.6.jar \
                    --patch-module java.xml=lib/endorsed/org.apache.karaf.specs.java.xml-4.2.6.jar \
                    --add-opens java.base/java.security=ALL-UNNAMED \
                    --add-opens java.base/java.net=ALL-UNNAMED \
                    --add-opens java.base/java.lang=ALL-UNNAMED \
                    --add-opens java.base/java.util=ALL-UNNAMED \
                    --add-opens java.naming/javax.naming.spi=ALL-UNNAMED \
                    --add-opens java.rmi/sun.rmi.transport.tcp=ALL-UNNAMED \
                    --add-exports=java.base/sun.net.www.protocol.http=ALL-UNNAMED \
                    --add-exports=java.base/sun.net.www.protocol.https=ALL-UNNAMED \
                    --add-exports=java.base/sun.net.www.protocol.jar=ALL-UNNAMED \
                    --add-exports=jdk.xml.dom/org.w3c.dom.html=ALL-UNNAMED \
                    --add-exports=jdk.naming.rmi/com.sun.jndi.url.rmi=ALL-UNNAMED \
                    -Dkaraf.instances="${KARAF_HOME}/instances" \
                    -Dkaraf.home="${KARAF_HOME}" \
                    -Dkaraf.base="${KARAF_BASE}" \
                    -Dkaraf.data="${KARAF_DATA}" \
                    -Dkaraf.etc="${KARAF_ETC}" \
                    -Dkaraf.log="${KARAF_LOG}" \
                    -Dkaraf.restart.jvm.supported=true \
                    -Djava.io.tmpdir="${KARAF_DATA}/tmp" \
                    -Djava.util.logging.config.file="${KARAF_BASE}/etc/java.util.logging.properties" \
                    ${KARAF_SYSTEM_OPTS} \
                    ${KARAF_OPTS} \
                    ${OPTS} \
                    -classpath "${CLASSPATH}" \
                    ${MAIN} "$@"
            else
                ${KARAF_EXEC} "${JAVA}" ${JAVA_OPTS} \
                    -Djava.endorsed.dirs="${JAVA_ENDORSED_DIRS}" \
                    -Djava.ext.dirs="${JAVA_EXT_DIRS}" \
                    -Dkaraf.instances="${KARAF_HOME}/instances" \
                    -Dkaraf.home="${KARAF_HOME}" \
                    -Dkaraf.base="${KARAF_BASE}" \
                    -Dkaraf.data="${KARAF_DATA}" \
                    -Dkaraf.etc="${KARAF_ETC}" \
                    -Dkaraf.log="${KARAF_LOG}" \
                    -Dkaraf.restart.jvm.supported=true \
                    -Djava.io.tmpdir="${KARAF_DATA}/tmp" \
                    -Djava.util.logging.config.file="${KARAF_BASE}/etc/java.util.logging.properties" \
                    ${KARAF_SYSTEM_OPTS} \
                    ${KARAF_OPTS} \
                    ${OPTS} \
                    -classpath "${CLASSPATH}" \
                    ${MAIN} "$@"
            fi
        else
            die "There is a Root instance already running with name ${ROOT_INSTANCE_NAME} and pid ${ROOT_INSTANCE_PID}. If you know what you are doing and want to force the run anyway, export CHECK_ROOT_INSTANCE_RUNNING=false and re run the command."
        fi

        KARAF_RC=$?
        if [ ${KARAF_DAEMON} ] ; then
            exit ${KARAF_RC}
        else
            if [ "${KARAF_RC}" -eq 10 ]; then
               echo "Restarting JVM..."
            else
               exit ${KARAF_RC}
            fi
        fi
    done
}

nothing() {
   # nothing to do here
   a=a
}

main() {
    init
    trap 'nothing' TSTP
    run "$@"
}

main "$@"
