#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | foam-extend: Open Source CFD
#  \\    /   O peration     |
#   \\  /    A nd           | For copyright notice see file Copyright
#    \\/     M anipulation  |
#------------------------------------------------------------------------------
# License
#     This file is part of foam-extend.
#
#     foam-extend is free software: you can redistribute it and/or modify it
#     under the terms of the GNU General Public License as published by the
#     Free Software Foundation, either version 3 of the License, or (at your
#     option) any later version.
#
#     foam-extend is distributed in the hope that it will be useful, but
#     WITHOUT ANY WARRANTY; without even the implied warranty of
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#     General Public License for more details.
#
#     You should have received a copy of the GNU General Public License
#     along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.
#
# Script
#     foamInstallationTest
#
# Description
#     Checks the machine system, the installation of foam-extend, and the user's
#     personal configuration for running foam-extend.
#
#------------------------------------------------------------------------------

# Base settings
FOAM_VERSION=foam-extend-3.0
SUPPLIED_VERSION_GCC=4.3.3
MIN_VERSION_GCC=4.3.1

# General
WIDTH=20

# Global variables
FATALERROR=0
CRITICALERROR=0
SSHRSHOK=0

# System variables
HOST_NAME=`uname -n`
OS=`uname -s`
USER_NAME=$LOGNAME
if [ ! -n $USER_NAME ]; then
    USER_NAME=$USER
fi

#==============================================================================
#                             HELPER FUNCTIONS
#==============================================================================

hline () {
    echo "-------------------------------------------------------------------------------"
}


expenv () {
    eval "echo $1"
}


heading () {
    echo ""
    echo ""
    echo "$1"
}


lenBase () {
    echo $1 | tr -d " " | wc -m | tr -d " "
}


length () {
    NOCHAR=`lenBase $1`
    NOCHAR=`expr $NOCHAR - 1`
    if [ $NOCHAR -eq -1 ]; then
        NOCHAR=0
    fi
    echo $NOCHAR
}


stringLength () {
    echo $1 | wc -m | tr -d " "
}


fixlen () {
    WORD=$1
    ONELEN=`stringLength $1`
    LDIFF=`expr $ONELEN - $2`
    if [ $LDIFF -le 1 ]; then
        while [ $LDIFF -lt 0 ] ; do
            WORD="$WORD "
            LDIFF=`expr $LDIFF + 1`
        done
        echo "$WORD"
    else
        LDIFF=`expr $LDIFF + 4`
        WORD=`echo "$WORD" | cut -c${LDIFF}-`
        echo "...${WORD}"
    fi
}


reportEnv () {
    EXP_ENV=`eval "echo $1"`
    EXP_PATH=`eval "echo $2"`
    CRIT="$3"
    EXISTS=" no  "
    ON_PATH=""
    if [ `length $EXP_ENV` -gt 0 ] ; then
        case $OS in
        SunOS)
            if /usr/bin/test -e $EXP_ENV ; then
                EXISTS=" yes "
                if  [ "$2" != noPath ]; then
                    ON_PATH=" no "
                    OLD_IFS=$IFS
                    IFS=':'
                    for e in $EXP_PATH
                    do
                        if                                \
                        [                                 \
                            "$e" = "$EXP_ENV"             \
                         -o "$e" = "${EXP_ENV}/bin"       \
                         -o "${EXP_ENV}/lib" = "$e"       \
                        ] ; then
                            ON_PATH="yes "
                        fi
                    done
                    IFS=$OLD_IFS
               else
                    CRIT="    $3"
               fi
            else
                ON_PATH="    "
            fi
            echo "`fixlen "$1" 21` `fixlen "$EXP_ENV" 40` $EXISTS $ON_PATH $CRIT"
            ;;
        *)
            if [ -e "$EXP_ENV" ] ; then
                EXISTS=" yes "
                if  [ "$2" != noPath ]; then
                    ON_PATH=" no "
                    OLD_IFS=$IFS
                    IFS=':'
                    for e in $EXP_PATH
                    do
                        if                                \
                        [                                 \
                            "$e" = "$EXP_ENV"             \
                         -o "$e" = "${EXP_ENV}/bin"       \
                         -o "${EXP_ENV}/lib" = "$e"       \
                        ] ; then
                            ON_PATH="yes "
                        fi
                    done
                    IFS=$OLD_IFS
               else
                    CRIT="    $3"
               fi
            else
                ON_PATH="    "
            fi
            echo "`fixlen "$1" 21` `fixlen "$EXP_ENV" 40` $EXISTS $ON_PATH $CRIT"
            ;;
        esac
    else
        echo "`fixlen "$1" 21` --------- env variable not set ---------            $3"
    fi

    ERROR="false"
    if [ "$EXISTS" = no ] || [ "$ON_PATH" = no ]; then
        ERROR="true"
    fi
    if [ "$3" = yes ] && [ "$ERROR" = true ]; then
        CRITICALERROR=`expr $CRITICALERROR + 1`
        echo "WARNING: CRITICAL ERROR"
        echo
    fi

}


findExec() {
    OLD_IFS=$IFS
    IFS=':'
    for d in $1
    do
        case $OS in
        SunOS)
            if /usr/bin/test ! -d "$d/$2" -a -x "$d/$2" ; then
                IFS=$OLD_IFS
                echo "$d/$2"
                return 0
            fi
            ;;
        *)
            if [ ! -d "$d/$2" -a -x "$d/$2" ]; then
                IFS=$OLD_IFS
                echo "$d/$2"
                return 0
            fi
            ;;
        esac
    done
    IFS=$OLD_IFS
    return 1
}


reportExecutable () {
    APP_PATH=""
    APP_PATH=`findExec $PATH $1`
    APP_SPEC="$2"
    if [ ! -n $APP_PATH ];then
        echo "`fixlen "$1" 9`" "*** not installed ***"
        VERSION=""
        case $1 in
            icoFoam)
                echo "          CRITICAL ERROR"
                CRITICALERROR=`expr $CRITICALERROR + 1`
                ;;
            gcc)
                echo "          CRITICAL ERROR"
                CRITICALERROR=`expr $CRITICALERROR + 1`
                ;;
            tar) ;;
            gtar) ;;
            gzip) ;;
            dx) ;;
        esac
        echo
        return 1
    fi
    case $1 in
        icoFoam)
            VERSION=`$1 2>&1                      \
                | \grep ' Version:'               \
                | sed -e 's/.*Version:/Version:/' \
                | cut -d" " -f3`
            ;;
        gcc)
            VERSION=`$1 -v 2>&1                  \
                | grep 'gcc version'                 \
                | cut -d" " -f3`
            if [ ! "$VERSION" = "$SUPPLIED_VERSION_GCC" ]; then
                echo "WARNING: gcc version does not match gcc supplied" \
                     "with this release of foam-extend"
                echo "         Supplied version: $SUPPLIED_VERSION_GCC"
                echo "         User version    : $VERSION"
                echo "         Minimum required: $MIN_VERSION_GCC"
                echo ""
            fi
            ;;
        gtar)
            VERSION=`$APP_PATH --version | head -1`
            ;;
        tar)
            VERSION=`$APP_PATH --version | head -1 | cut -d" " -f4`
            ;;
        gzip)
            case $OS in
                SunOS)
                    VERSION=`$1 --version 2>&1 | grep gzip | cut -d" " -f2`
                    ;;
                *)
                    VERSION=`$1 --version | head -1 | cut -d" " -f2`
                    ;;
            esac
            ;;
    esac
    if [ "$APP_PATH" = "$APP_SPEC" ] || [ ! "$2" ]; then
        echo "`fixlen "$1" 9` `fixlen "$VERSION" 10` `fixlen "$APP_PATH" 58`"
    else
        echo "`fixlen "$1" 9` `fixlen "$VERSION" 10`"
        echo "WARNING:  Conflicting installations:"
        echo "          foam-extend settings        : $APP_SPEC"
        echo "          current path             : $APP_PATH"
        case $1 in
            icoFoam)
                echo "          CRITICAL ERROR"
                CRITICALERROR=`expr $CRITICALERROR + 1`
                ;;
            gcc)
                echo "          CRITICAL ERROR"
                CRITICALERROR=`expr $CRITICALERROR + 1`
                ;;
            gtar) ;;
            gzip) ;;
            dx) ;;
        esac
        echo ""
    fi
}


pingTest () {
    RESULT=""
    case $OS in
        SunOS)
            PINGTEST=`/usr/sbin/ping $1 2>&1`
            if  [ "`echo $PINGTEST | grep alive`" != "" ] ; then
                RESULT="Successful"
            elif  [ "`echo $PINGTEST | grep 'unknown host'`" != "" ] ; then
                RESULT="No_entry_for_\"$1\"_in_/etc/hosts"
            else
                RESULT="Networking_cannot_reach_$1"
            fi
            ;;
        *)
            PINGTEST=`/bin/ping -w 3 -c 1 $1 2>&1`
            if  [ "`echo $PINGTEST | grep '1 received'`" != "" ] ; then
                RESULT="Successful"
            elif  [ "`echo $PINGTEST | grep 'unknown host'`" != "" ] ; then
                RESULT="No_entry_for_\"$1\"_in_/etc/hosts"
            else
                RESULT="Networking_cannot_reach_$1"
            fi
            ;;
    esac

    echo "`fixlen "Pinging_$1" 25` `fixlen "$RESULT" 45` `fixlen "$2" 5`"

    if [ "$2" = yes ] && [  "$RESULT" != Successful ]; then
        CRITICALERROR=`expr $CRITICALERROR + 1`
        echo "WARNING: CRITICAL ERROR"
        echo
    fi
}


telnetPortTest () {
telnet -e A $1 $2 <<EOF
A
quit
EOF
}


checkTelnetPort () {
    if [ -x "/usr/bin/telnet" ] || [ -x "/bin/telnet" ] ; then
        RESULT=`telnetPortTest $1 $2 2>&1 | egrep "onnect.* [t|r]"`
        if [ "`echo $RESULT | grep 'Connected to'`" ] ; then
            RESULT='Successful'
        elif [ "`echo $RESULT | grep 'Connection refused'`" ] ; then
            RESULT='Unsuccessful_connection_refused*'
        else
            RESULT="Not_active*"
        fi
    else
        RESULT='No_telnet_installed:_cannot_check*'
    fi
}


checkRsh () {
    checkTelnetPort $HOST_NAME 222
    echo "`fixlen "Test_rsh:" 25` `fixlen "$RESULT" 45` "yes""
    if [ "$RESULT" != Successful ]; then
        SSHRSHOK=`expr $SSHRSHOK + 1`
    fi
}


checkSsh () {
    checkTelnetPort $HOST_NAME 22
    echo "`fixlen "Test_ssh:" 25` `fixlen "$RESULT" 45` "yes""
    if [ "$RESULT" != Successful ]; then
        SSHRSHOK=`expr $SSHRSHOK + 1`
    fi
}


checkFoamEnvironment() {
    [ -d "$WM_PROJECT_INST_DIR" ] && [ -d "$WM_THIRD_PARTY_DIR" ] || {
        echo ""
        echo "FATAL ERROR: foam-extend environment not configured."
        echo ""
        echo "    Please refer to the installation section of the file:"
        echo "    <foam installation dir>/${FOAM_VERSION}/ReleaseNotes-${FOAM_VERSION}"
        echo "    to source the foam-extend environment."
        echo ""
        exit 1
    }
}


checkUserShell() {
    case $SHELL in
        */csh | */tcsh)
            # USER_CONFIG_TYPE="cshrc"
            echo "`fixlen "Shell:" $WIDTH` ${SHELL##*/}"
            ;;
        */bash | */ksh)
            # USER_CONFIG_TYPE="bashrc"
            echo "`fixlen "Shell:" $WIDTH` ${SHELL##*/}"
            ;;
        *)
            # USER_CONFIG_TYPE=""
            echo "`fixlen "Shell:" $WIDTH` ${SHELL##*/}"
            echo "FATAL ERROR: Cannot identify the shell you are running."
            echo "             ${FOAM_VERSION} is compatible with "
            echo "             csh, tcsh, ksh and bash."
            echo
            FATALERROR=`expr $FATALERROR + 1`;;
    esac
}


checkHostName() {
    if [ ! "$HOST_NAME" ]; then
        echo "`fixlen "Host:" $WIDTH` ${HOST_NAME}"
        echo "FATAL ERROR: Cannot stat hostname."
        echo "             Contact your system administrator, "
        echo "             ${FOAM_VERSION} needs a valid "
        echo "             hostname to function."
        echo
        FATALERROR=`expr $FATALERROR + 1`
    else
        echo "`fixlen "Host:" $WIDTH` ${HOST_NAME}"
    fi
}


checkOS () {
    case "$OS" in
    Linux | LinuxAMD64 | SunOS )
        echo "`fixlen "OS:" $WIDTH` ${OS} version $(uname -r)"
        ;;
    *)
        echo "FATAL ERROR: Incompatible operating system \"$OS\"."
        echo "             ${FOAM_VERSION} is currently "
        echo "             available for Linux and SunOS only."
        echo
        FATALERROR=`expr $FATALERROR + 1`
        ;;
    esac
}


#==============================================================================
#                                MAIN SCRIPT
#==============================================================================
#
echo "Executing $0:"

#------------------------------------------------------------------------------
heading "Checking basic setup..."
hline
checkFoamEnvironment
checkUserShell
checkHostName
checkOS
hline

#------------------------------------------------------------------------------
heading "Checking main foam-extend env variables..."
COL1=`fixlen "Environment_variable" 21`
COL2=`fixlen "Set_to_file_or_directory" 40`
COL3="Valid"
COL4="Path"
COL5="Crit"
hline
echo "$COL1 $COL2 $COL3      $COL5"
hline
reportEnv '$WM_PROJECT_INST_DIR' 'noPath' "yes"
reportEnv '$WM_PROJECT_USER_DIR' 'noPath' "no"
reportEnv '$WM_THIRD_PARTY_DIR'  'noPath' "yes"
hline

#------------------------------------------------------------------------------
heading "Checking the foam-extend env variables set on the PATH..."
hline
echo "$COL1 $COL2 $COL3 $COL4 $COL5"
hline
reportEnv '$WM_PROJECT_DIR'   '$PATH' "yes"
echo ""
reportEnv '$FOAM_APPBIN'      '$PATH' "yes"
reportEnv '$FOAM_SITE_APPBIN' '$PATH' "no"
reportEnv '$FOAM_USER_APPBIN' '$PATH' "no"
reportEnv '$WM_DIR'           '$PATH' "yes"
hline

#------------------------------------------------------------------------------
heading "Checking the foam-extend env variables set on the LD_LIBRARY_PATH..."
hline
echo "$COL1 $COL2 $COL3 $COL4 $COL5"
hline
reportEnv '$FOAM_LIBBIN'      '$LD_LIBRARY_PATH' "yes"
reportEnv '$FOAM_SITE_LIBBIN' '$LD_LIBRARY_PATH' "no"
reportEnv '$FOAM_USER_LIBBIN' '$LD_LIBRARY_PATH' "no"
reportEnv '$MPI_ARCH_PATH'    '$LD_LIBRARY_PATH' "yes"
hline

#------------------------------------------------------------------------------
heading "Third party software"
COL1=`fixlen "Software" 9`
COL2=`fixlen "Version" 10`
COL3=`fixlen "Location" 10`
hline
echo "$COL1 $COL2 $COL3"
hline
reportExecutable gcc "${WM_COMPILER_DIR}/bin/gcc"
reportExecutable gzip
if [ "$OS" = Linux ]  ; then
    reportExecutable tar
else
    reportExecutable gtar
fi
reportExecutable icoFoam "${FOAM_APPBIN}/icoFoam"

hline

#------------------------------------------------------------------------------
heading "Summary"
hline

if [ $FATALERROR -gt 0 ] ; then
    echo "The system test has evoked $FATALERROR fatal error(s)."
else
    echo "Base configuration ok."
fi
echo ""
if [ $CRITICALERROR -gt 0 ]; then
    echo "The foam installation contains $CRITICALERROR critical error(s)."
else
    echo "Critical systems ok."
fi
echo ""
if [ $CRITICALERROR -gt 0 ] || [ $FATALERROR -gt 0 ]; then
    echo "Review the output for warning messages and consult "
    echo "the installation guide for trouble shooting."
fi
echo ""

echo "done."

echo ""

exit 0

#------------------------------------------------------------------------------