source: installer/opengnsys_installer.sh @ 3fef8e1

#!/bin/bash

#####################################################################
####### Script instalador OpenGnsys
####### autor: Luis Guillén <lguillen@unizar.es>
#####################################################################


WORKDIR=/tmp/opengnsys_installer
LOG_FILE=/tmp/opengnsys_installation.log

# Array con las dependencias
DEPENDENCIES=( subversion apache2 php5 mysql-server php5-mysql nfs-kernel-server dhcp3-server udpcast bittorrent tftp-hpa tftpd-hpa syslinux openbsd-inetd update-inetd build-essential libmysqlclient15-dev wget doxygen graphviz)

INSTALL_TARGET=/opt/opengnsys

MYSQL_ROOT_PASSWORD="passwordroot"

# conexión al svn
SVN_URL=svn://www.informatica.us.es:3690/opengnsys/trunk

# Datos de base de datos
OPENGNSYS_DATABASE=ogBDAdmin
OPENGNSYS_DB_USER=usuog
OPENGNSYS_DB_PASSWD=passusuog
OPENGNSYS_DB_DEFAULTUSER=opengnsys
OPENGNSYS_DB_DEFAULTPASSWD=opengnsys
OPENGNSYS_DB_CREATION_FILE=opengnsys/admin/Database/ogBDAdmin.sql

USUARIO=`whoami`

if [ $USUARIO != 'root' ]
then
        echo "ERROR: this program must run under root privileges!!"
        exit 1
fi


mkdir -p $WORKDIR
pushd $WORKDIR

#####################################################################
####### Algunas funciones útiles de propósito general:
#####################################################################
function getDateTime()
{
        echo `date +%Y%m%d-%H%M%S`
}

# Escribe a fichero y muestra por pantalla
function echoAndLog()
{
        echo $1
        FECHAHORA=`getDateTime`
        echo "$FECHAHORA;$SSH_CLIENT;$1" >> $LOG_FILE
}

function errorAndLog()
{
        echo "ERROR: $1"
        FECHAHORA=`getDateTime`
        echo "$FECHAHORA;$SSH_CLIENT;ERROR: $1" >> $LOG_FILE
}

# comprueba si el elemento pasado en $2 esta en el array $1
function isInArray()
{
        if [ $# -ne 2 ]; then
                errorAndLog "${FUNCNAME}(): invalid number of parameters"
                exit 1
        fi

        echoAndLog "${FUNCNAME}(): checking if $2 is in $1"
        local deps
        eval "deps=( \"\${$1[@]}\" )"
        elemento=$2

        local is_in_array=1
        # copia local del array del parametro 1
        for (( i = 0 ; i < ${#deps[@]} ; i++ ))
        do
                if [ "${deps[$i]}" = "${elemento}" ]; then
                        echoAndLog "isInArray(): $elemento found in array"
                        is_in_array=0
                fi
        done

        if [ $is_in_array -ne 0 ]; then
                echoAndLog "${FUNCNAME}(): $elemento NOT found in array"
        fi

        return $is_in_array

}

#####################################################################
####### Funciones de manejo de paquetes Debian
#####################################################################

function checkPackage()
{
        package=$1
        if [ -z $package ]; then
                errorAndLog "checkPackage(): parameter required"
                exit 1
        fi
        echoAndLog "checkPackage(): checking if package $package exists"
        dpkg -L $package &>/dev/null
        if [ $? -eq 0 ]; then
                echoAndLog "checkPackage(): package $package exists"
                return 0
        else
                echoAndLog "checkPackage(): package $package doesn't exists"
                return 1
        fi
}

# recibe array con dependencias
# por referencia deja un array con las dependencias no resueltas
# devuelve 1 si hay alguna dependencia no resuelta
function checkDependencies()
{
        if [ $# -ne 2 ]; then
                errorAndLog "checkDependencies(): invalid number of parameters"
                exit 1
        fi

        echoAndLog "checkDependencies(): checking dependences"
        uncompletedeps=0

        # copia local del array del parametro 1
        local deps
        eval "deps=( \"\${$1[@]}\" )"

        declare -a local_notinstalled

        for (( i = 0 ; i < ${#deps[@]} ; i++ ))
        do
                checkPackage ${deps[$i]}
                if [ $? -ne 0 ]; then
                        local_notinstalled[$uncompletedeps]=$package
                        let uncompletedeps=uncompletedeps+1
                fi
        done

        # relleno el array especificado en $2 por referencia
        for (( i = 0 ; i < ${#local_notinstalled[@]} ; i++ ))
        do
                eval "${2}[$i]=${local_notinstalled[$i]}"
        done

        # retorna el numero de paquetes no resueltos
        echoAndLog "checkDependencies(): dependencies uncompleted: $uncompletedeps"
        return $uncompletedeps
}

# Recibe un array con las dependencias y lo instala
function installDependencies()
{
        if [ $# -ne 1 ]; then
                errorAndLog "installDependencies(): invalid number of parameters"
                exit 1
        fi
        echoAndLog "installDependencies(): installing uncompleted dependencies"

        # copia local del array del parametro 1
        local deps
        eval "deps=( \"\${$1[@]}\" )"

        local string_deps=""
        for (( i = 0 ; i < ${#deps[@]} ; i++ ))
        do
                string_deps="$string_deps ${deps[$i]}"
        done

        if [ -z "${string_deps}" ]; then
                errorAndLog "installDependencies(): array of dependeces is empty"
                exit 1
        fi

        OLD_DEBIAN_FRONTEND=$DEBIAN_FRONTEND
        export DEBIAN_FRONTEND=noninteractive

        echoAndLog "installDependencies(): now ${string_deps} will be installed"
        apt-get -y install --force-yes ${string_deps}
        if [ $? -ne 0 ]; then
                errorAndLog "installDependencies(): error installing dependencies"
                return 1
        fi

        DEBIAN_FRONTEND=$OLD_DEBIAN_FRONTEND
        echoAndLog "installDependencies(): dependencies installed"
}

# Hace un backup del fichero pasado por parámetro
# deja un -last y uno para el día
function backupFile()
{
        if [ $# -ne 1 ]; then
                errorAndLog "${FUNCNAME}(): invalid number of parameters"
                exit 1
        fi

        local fichero=$1
        local fecha=`date +%Y%m%d`

        if [ ! -f $fichero ]; then
                errorAndLog "${FUNCNAME}(): file $fichero doesn't exists"
                return 1
        fi

        echoAndLog "${FUNCNAME}(): realizando backup de $fichero"

        # realiza una copia de la última configuración como last
        cp -p $fichero "${fichero}-LAST"

        # si para el día no hay backup lo hace, sino no
        if [ ! -f "${fichero}-${fecha}" ]; then
                cp -p $fichero "${fichero}-${fecha}"
        fi

        echoAndLog "${FUNCNAME}(): backup realizado"
}

#####################################################################
####### Funciones para el manejo de bases de datos
#####################################################################

# This function set password to root
function mysqlSetRootPassword()
{
        if [ $# -ne 1 ]; then
                errorAndLog "mysqlSetRootPassword(): invalid number of parameters"
                exit 1
        fi

        local root_mysql=$1
        echoAndLog "mysqlSetRootPassword(): setting root password in MySQL server"
        /usr/bin/mysqladmin -u root password ${root_mysql}
        if [ $? -ne 0 ]; then
                errorAndLog "mysqlSetRootPassword(): error while setting root password in MySQL server"
                return 1
        fi
        echoAndLog "mysqlSetRootPassword(): root password saved!"
        return 0
}

# Si el servicio mysql esta ya instalado cambia la variable de la clave del root por la ya existente
function mysqlGetRootPassword(){
        local pass_mysql
        local pass_mysql2
        stty -echo
        echo "Existe un servicio mysql ya instalado"
        read -p  "Insertar clave de root de Mysql: " pass_mysql
        echo ""
        read -p "Confirmar clave:" pass_mysql2
        echo ""
        stty echo
        if [ "$pass_mysql" == "$pass_mysql2" ] ;then
                MYSQL_ROOT_PASSWORD=$pass_mysql
                echo "La clave es: ${MYSQL_ROOT_PASSWORD}"
                return 0
        else
                echo "Las claves no coinciden no se configura la clave del servidor de base de datos."
                echo "las operaciones con la base de datos daran error"
                return 1
        fi


}

# comprueba si puede conectar con mysql con el usuario root
function mysqlTestConnection()
{
        if [ $# -ne 1 ]; then
                errorAndLog "mysqlTestConnection(): invalid number of parameters"
                exit 1
        fi

        local root_password="${1}"
        echoAndLog "mysqlTestConnection(): checking connection to mysql..."
        echo "" | mysql -uroot -p"${root_password}"
        if [ $? -ne 0 ]; then
                errorAndLog "mysqlTestConnection(): connection to mysql failed, check root password and if daemon is running!"
                return 1
        else
                echoAndLog "mysqlTestConnection(): connection success"
                return 0
        fi
}

# comprueba si la base de datos existe
function mysqlDbExists()
{
        if [ $# -ne 2 ]; then
                errorAndLog "mysqlDbExists(): invalid number of parameters"
                exit 1
        fi

        local root_password="${1}"
        local database=$2
        echoAndLog "mysqlDbExists(): checking if $database exists..."
        echo "show databases" | mysql -uroot -p"${root_password}" | grep "^${database}$"
        if [ $? -ne 0 ]; then
                echoAndLog "mysqlDbExists():database $database doesn't exists"
                return 1
        else
                echoAndLog "mysqlDbExists():database $database exists"
                return 0
        fi
}

function mysqlCheckDbIsEmpty()
{
        if [ $# -ne 2 ]; then
                errorAndLog "mysqlCheckDbIsEmpty(): invalid number of parameters"
                exit 1
        fi

        local root_password="${1}"
        local database=$2
        echoAndLog "mysqlCheckDbIsEmpty(): checking if $database is empty..."
        num_tablas=`echo "show tables" | mysql -uroot -p"${root_password}" "${database}" | wc -l`
        if [ $? -ne 0 ]; then
                errorAndLog "mysqlCheckDbIsEmpty(): error executing query, check database and root password"
                exit 1
        fi

        if [ $num_tablas -eq 0 ]; then
                echoAndLog "mysqlCheckDbIsEmpty():database $database is empty"
                return 0
        else
                echoAndLog "mysqlCheckDbIsEmpty():database $database has tables"
                return 1
        fi

}


function mysqlImportSqlFileToDb()
{
        if [ $# -ne 3 ]; then
                errorAndLog "${FNCNAME}(): invalid number of parameters"
                exit 1
        fi

        local root_password="${1}"
        local database=$2
        local sqlfile=$3

        if [ ! -f $sqlfile ]; then
                errorAndLog "${FUNCNAME}(): Unable to locate $sqlfile!!"
                return 1
        fi

        echoAndLog "${FUNCNAME}(): importing sql file to ${database}..."
        perl -pi -e "s/SERVERIP/$SERVERIP/g; s/DEFAULTUSER/$OPENGNSYS_DB_DEFAULTUSER/g; s/DEFAULTPASSWD/$OPENGNSYS_DB_DEFAULTPASSWD/g" $sqlfile
        mysql -uroot -p"${root_password}" "${database}" < $sqlfile
        if [ $? -ne 0 ]; then
                errorAndLog "${FUNCNAME}(): error while importing $sqlfile in database $database"
                return 1
        fi
        echoAndLog "${FUNCNAME}(): file imported to database $database"
        return 0
}

# Crea la base de datos
function mysqlCreateDb()
{
        if [ $# -ne 2 ]; then
                errorAndLog "${FUNCNAME}(): invalid number of parameters"
                exit 1
        fi

        local root_password="${1}"
        local database=$2

        echoAndLog "${FUNCNAME}(): creating database..."
        mysqladmin -u root --password="${root_password}" create $database
        if [ $? -ne 0 ]; then
                errorAndLog "${FUNCNAME}(): error while creating database $database"
                return 1
        fi
        echoAndLog "${FUNCNAME}(): database $database created"
        return 0
}


function mysqlCheckUserExists()
{
        if [ $# -ne 2 ]; then
                errorAndLog "mysqlCheckUserExists(): invalid number of parameters"
                exit 1
        fi

        local root_password="${1}"
        local userdb=$2

        echoAndLog "mysqlCheckUserExists(): checking if $userdb exists..."
        echo "select user from user where user='${userdb}'\\G" |mysql -uroot -p"${root_password}" mysql | grep user
        if [ $? -ne 0 ]; then
                echoAndLog "mysqlCheckUserExists(): user doesn't exists"
                return 1
        else
                echoAndLog "mysqlCheckUserExists(): user already exists"
                return 0
        fi

}

# Crea un usuario administrativo para la base de datos
function mysqlCreateAdminUserToDb()
{
        if [ $# -ne 4 ]; then
                errorAndLog "mysqlCreateAdminUserToDb(): invalid number of parameters"
                exit 1
        fi

        local root_password=$1
        local database=$2
        local userdb=$3
        local passdb=$4

        echoAndLog "mysqlCreateAdminUserToDb(): creating admin user ${userdb} to database ${database}"

        cat > $WORKDIR/create_${database}.sql <<EOF
GRANT USAGE ON *.* TO '${userdb}'@'localhost' IDENTIFIED BY '${passdb}' ;
GRANT ALL PRIVILEGES ON ${database}.* TO '${userdb}'@'localhost' WITH GRANT OPTION ;
FLUSH PRIVILEGES ;
EOF
        mysql -u root --password=${root_password} < $WORKDIR/create_${database}.sql
        if [ $? -ne 0 ]; then
                errorAndLog "mysqlCreateAdminUserToDb(): error while creating user in mysql"
                rm -f $WORKDIR/create_${database}.sql
                return 1
        else
                echoAndLog "mysqlCreateAdminUserToDb(): user created ok"
                rm -f $WORKDIR/create_${database}.sql
                return 0
        fi
}


#####################################################################
####### Funciones para el manejo de Subversion
#####################################################################

function svnCheckoutCode()
{
        if [ $# -ne 1 ]; then
                errorAndLog "${FUNCNAME}(): invalid number of parameters"
                exit 1
        fi

        local url=$1

        echoAndLog "${FUNCNAME}(): downloading subversion code..."

        /usr/bin/svn co "${url}" opengnsys
        if [ $? -ne 0 ]; then
                errorAndLog "${FUNCNAME}(): error getting code from ${url}, verify your user and password"
                return 1
        fi
        echoAndLog "${FUNCNAME}(): subversion code downloaded"
        return 0
}


function svnExportCode()
{
        if [ $# -ne 1 ]; then
                errorAndLog "${FUNCNAME}(): invalid number of parameters"
                exit 1
        fi

        local url=$1

        echoAndLog "${FUNCNAME}(): downloading subversion code..."

        /usr/bin/svn export "${url}" opengnsys
        if [ $? -ne 0 ]; then
                errorAndLog "${FUNCNAME}(): error getting code from ${url}, verify your user and password"
                return 1
        fi
        echoAndLog "${FUNCNAME}(): subversion code downloaded"
        return 0
}


############################################################
###  Detectar red
############################################################

function getNetworkSettings()
{
        # Variables globales definidas:
        # - SERVERIP: IP local del servidor.
        # - NETIP:    IP de la red.
        # - NETMASK:  máscara de red.
        # - NETBROAD: IP de difusión de la red.
        # - ROUTERIP: IP del router.
        # - DNSIP:    IP del servidor DNS.

        echoAndLog "getNetworkSettings(): Detecting default network parameters."
        SERVERIP=$(LANG=C ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | head -n1 | awk '{print $1}')
        NETMASK=$(LANG=C ifconfig | grep 'Mask:'| grep -v '127.0.0.1' | cut -d: -f4 | head -n1 | awk '{print $1}')
        NETBROAD=$(LANG=C ifconfig | grep 'Bcast:'| grep -v '127.0.0.1' | cut -d: -f3 | head -n1 | awk '{print $1}')
        NETIP=$(netstat -r | grep $NETMASK | head -n1 | awk '{print $1}')
        ROUTERIP=$(netstat -nr | awk '$1~/0\.0\.0\.0/ {print $2}')
        DNSIP=$(awk '/nameserver/ {print $2}' /etc/resolv.conf | head -n1)
        if [ -z "$NETIP" -o -z "$NETMASK" ]; then
                errorAndLog "getNetworkSettings(): Network not detected."
                exit 1
        fi

        # Variables de ejecución de Apache
        # - APACHE_RUN_USER
        # - APACHE_RUN_GROUP
        if [ -f /etc/apache2/envvars ]; then
                source /etc/apache2/envvars
        fi
        APACHE_RUN_USER=${APACHE_RUN_USER:-"www-data"}
        APACHE_RUN_GROUP=${APACHE_RUN_GROUP:-"www-data"}
}


############################################################
### Esqueleto para el Servicio pxe y contenedor tftpboot ###
############################################################

function tftpConfigure() {
        echo "Configurando el servicio tftp"
        basetftp=/var/lib/tftpboot

        # reiniciamos demonio internet ????? porque ????
        /etc/init.d/openbsd-inetd start

        # preparacion contenedor tftpboot
        cp -pr /usr/lib/syslinux/ ${basetftp}/syslinux
        cp /usr/lib/syslinux/pxelinux.0 ${basetftp}
        # prepamos el directorio de la configuracion de pxe
        mkdir -p ${basetftp}/pxelinux.cfg
        cat > ${basetftp}/pxelinux.cfg/default <<EOF
DEFAULT pxe

LABEL pxe
KERNEL linux
APPEND initrd=initrd.gz ip=dhcp ro vga=788 irqpoll acpi=on
EOF
        # comprobamos el servicio tftp
        sleep 1
        testPxe
        ## damos perfimos de lectura a usuario web.
        chown -R $APACHE_RUN_USER:$APACHE_RUN_GROUP ${basetftp}
}

function testPxe () {
        cd /tmp
        echo "comprobando servicio pxe ..... Espere"
        tftp -v localhost -c get pxelinux.0 /tmp/pxelinux.0 && echo "servidor tftp OK" || echo "servidor tftp KO"
        cd /
}

########################################################################
## Configuracion servicio NFS
########################################################################

# function nfsConfigure ()
# {
#         echoAndLog "${FUNCNAME}(): Sample NFS Configuration."
#         sed -e "s/NETIP/$NETIP/g" -e "s/NETMASK/$NETMASK/g" $WORKDIR/opengnsys/server/NFS/exports  >> /etc/exports
#       /etc/init.d/nfs-kernel-server restart
#       exportfs -va
#         echoAndLog "${FUNCNAME}(): Sample NFS Configured in file \"/etc/exports\"."
# }

# ADVERTENCIA: usa variables globales NETIP y NETMASK!
function nfsConfigure()
{
        echoAndLog "${FUNCNAME}(): Config nfs server."

        backupFile /etc/exports

        nfsAddExport /opt/opengnsys/client ${NETIP}/${NETMASK}:ro,no_subtree_check,no_root_squash,sync
        if [ $? -ne 0 ]; then
                errorAndLog "${FUNCNAME}(): error while adding nfs client config"
                return 1
        fi

        nfsAddExport /opt/opengnsys/images ${NETIP}/${NETMASK}:rw,no_subtree_check,no_root_squash,sync,crossmnt
        if [ $? -ne 0 ]; then
                errorAndLog "${FUNCNAME}(): error while adding nfs images config"
                return 1
        fi

        nfsAddExport /opt/opengnsys/log/clients ${NETIP}/${NETMASK}:rw,no_subtree_check,no_root_squash,sync
        if [ $? -ne 0 ]; then
                errorAndLog "${FUNCNAME}(): error while adding logging client config"
                return 1
        fi

        /etc/init.d/nfs-kernel-server restart

        exportfs -va
        if [ $? -ne 0 ]; then
                errorAndLog "${FUNCNAME}(): error while configure exports"
                return 1
        fi

        echoAndLog "${FUNCNAME}(): Added NFS configuration to file \"/etc/exports\"."
        return 0
}


# ejemplos:
#nfsAddExport /opt/opengnsys 192.168.0.0/255.255.255.0:ro,no_subtree_check,no_root_squash,sync
#nfsAddExport /opt/opengnsys 192.168.0.0/255.255.255.0
#nfsAddExport /opt/opengnsys 80.20.2.1:ro 192.123.32.2:rw
function nfsAddExport()
{
        if [ $# -lt 2 ]; then
                errorAndLog "${FUNCNAME}(): invalid number of parameters"
                exit 1
        fi

        if [ ! -f /etc/exports ]; then
                errorAndLog "${FUNCNAME}(): /etc/exports don't exists"
                return 1
        fi

        local export="${1}"
        local contador=0
        local cadenaexport

        grep "^${export}" /etc/exports > /dev/null
        if [ $? -eq 0 ]; then
                echoAndLog "${FUNCNAME}(): $export exists in /etc/exports, omiting"
                return 0
        fi

        cadenaexport="${export}"
        for parametro in $*
        do
                if [ $contador -gt 0 ]
                then
                        host=`echo $parametro | awk -F: '{print $1}'`
                        options=`echo $parametro | awk -F: '{print $2}'`
                        if [ "${host}" == "" ]; then
                                errorAndLog "${FUNCNAME}(): host can't be empty"
                                return 1
                        fi
                        cadenaexport="${cadenaexport}\t${host}"

                        if [ "${options}" != "" ]; then
                                cadenaexport="${cadenaexport}(${options})"
                        fi
                fi
                let contador=contador+1
        done

        echo -en "$cadenaexport\n" >> /etc/exports

        echoAndLog "${FUNCNAME}(): add $export to /etc/exports"

        return 0
}

########################################################################
## Configuracion servicio DHCP
########################################################################

function dhcpConfigure()
{
        echoAndLog "${FUNCNAME}(): Sample DHCP Configuration."

        backupFile /etc/dhcp3/dhcpd.conf

        sed -e "s/SERVERIP/$SERVERIP/g" \
            -e "s/NETIP/$NETIP/g" \
            -e "s/NETMASK/$NETMASK/g" \
            -e "s/NETBROAD/$NETBROAD/g" \
            -e "s/ROUTERIP/$ROUTERIP/g" \
            -e "s/DNSIP/$DNSIP/g" \
            $WORKDIR/opengnsys/server/DHCP/dhcpd.conf > /etc/dhcp3/dhcpd.conf
        if [ $? -ne 0 ]; then
                errorAndLog "${FUNCNAME}(): error while configuring dhcp server"
                return 1
        fi

        /etc/init.d/dhcp3-server restart
        echoAndLog "${FUNCNAME}(): Sample DHCP Configured in file \"/etc/dhcp3/dhcpd.conf\"."
        return 0
}


#####################################################################
####### Funciones específicas de la instalación de Opengnsys
#####################################################################

# Copiar ficheros del OpenGNSys Web Console.
function installWebFiles()
{
        echoAndLog "${FUNCNAME}(): Installing web files..."
        cp -ar $WORKDIR/opengnsys/admin/WebConsole/* $INSTALL_TARGET/www   #*/ comentario para doxigen
        if [ $? != 0 ]; then
                errorAndLog "${FUNCNAME}(): Error copying web files."
                exit 1
        fi
        find $INSTALL_TARGET/www -name .svn -type d -exec rm -fr {} \; 2>/dev/null
        # Cambiar permisos para ficheros especiales.
        chown -R $APACHE_RUN_USER:$APACHE_RUN_GROUP \
                        $INSTALL_TARGET/www/includes \
                        $INSTALL_TARGET/www/comandos/gestores/filescripts \
                        $INSTALL_TARGET/www/images/iconos
        echoAndLog "${FUNCNAME}(): Web files installed successfully."
}

# Configuración específica de Apache.
function openGnsysInstallWebConsoleApacheConf()
{
        if [ $# -ne 2 ]; then
                errorAndLog "${FUNCNAME}(): invalid number of parameters"
                exit 1
        fi

        local path_opengnsys_base=$1
        local path_apache2_confd=$2
        local path_web_console=${path_opengnsys_base}/www

        if [ ! -d $path_apache2_confd ]; then
                errorAndLog "${FUNCNAME}(): path to apache2 conf.d can not found, verify your server installation"
                return 1
        fi

        mkdir -p $path_apache2_confd/{sites-available,sites-enabled}

        echoAndLog "${FUNCNAME}(): creating apache2 config file.."

        # genera configuración
        cat > $path_opengnsys_base/etc/apache.conf <<EOF
# OpenGNSys Web Console configuration for Apache

Alias /opengnsys ${path_web_console}

<Directory ${path_web_console}>
        Options -Indexes FollowSymLinks
        DirectoryIndex acceso.php
</Directory>
EOF

        ln -fs $path_opengnsys_base/etc/apache.conf $path_apache2_confd/sites-available/opengnsys.conf
        ln -fs $path_apache2_confd/sites-available/opengnsys.conf $path_apache2_confd/sites-enabled/opengnsys.conf
        if [ $? -ne 0 ]; then
                errorAndLog "${FUNCNAME}(): config file can't be linked to apache conf, verify your server installation"
                return 1
        else
                echoAndLog "${FUNCNAME}(): config file created and linked, restarting apache daemon"
                /etc/init.d/apache2 restart
                return 0
        fi
}

# Crea la estructura base de la instalación de opengnsys
function openGnsysInstallCreateDirs()
{
        if [ $# -ne 1 ]; then
                errorAndLog "${FUNCNAME}(): invalid number of parameters"
                exit 1
        fi

        local path_opengnsys_base=$1

        echoAndLog "${FUNCNAME}(): creating directory paths in $path_opengnsys_base"

        mkdir -p $path_opengnsys_base
        mkdir -p $path_opengnsys_base/admin/{autoexec,comandos,menus,usuarios}
        mkdir -p $path_opengnsys_base/bin
        mkdir -p $path_opengnsys_base/client
        mkdir -p $path_opengnsys_base/etc
        mkdir -p $path_opengnsys_base/lib
        mkdir -p $path_opengnsys_base/log/clients
        mkdir -p $path_opengnsys_base/sbin
        mkdir -p $path_opengnsys_base/www
        mkdir -p $path_opengnsys_base/images
        ln -fs /var/lib/tftpboot $path_opengnsys_base
        ln -fs $path_opengnsys_base/log /var/log/opengnsys

        if [ $? -ne 0 ]; then
                errorAndLog "${FUNCNAME}(): error while creating dirs. Do you have write permissions?"
                return 1
        fi

        echoAndLog "${FUNCNAME}(): directory paths created"
        return 0
}

# Copia ficheros de configuración y ejecutables genéricos del servidor.
function openGnsysCopyServerFiles () {
        if [ $# -ne 1 ]; then
                errorAndLog "${FUNCNAME}(): invalid number of parameters"
                exit 1
        fi

        local path_opengnsys_base=$1

        local SOURCES=( client/boot/initrd-generator \
                        client/boot/upgrade-clients-udeb.sh \
                        client/boot/udeblist.conf  \
                        client/boot/udeblist-jaunty.conf  \
                        client/boot/udeblist-karmic.conf \
                        server/PXE/pxelinux.cfg/default )
        local TARGETS=( bin/initrd-generator \
                        bin/upgrade-clients-udeb.sh \
                        etc/udeblist.conf \
                        etc/udeblist-jaunty.conf  \
                        etc/udeblist-karmic.conf \
                        tftpboot/pxelinux.cfg/default )

        if [ ${#SOURCES[@]} != ${#TARGETS[@]} ]; then
                errorAndLog "${FUNCNAME}(): inconsistent number of array items"
                exit 1
        fi

        echoAndLog "${FUNCNAME}(): copying files to server directories"

        pushd $WORKDIR/opengnsys
        local i
        for (( i = 0; i < ${#SOURCES[@]}; i++ )); do
                if [ -f "${SOURCES[$i]}" ]; then
                        echoAndLog "Copying ${SOURCES[$i]} to $path_opengnsys_base/${TARGETS[$i]}"
                        cp -p "${SOURCES[$i]}" "${path_opengnsys_base}/${TARGETS[$i]}"
                fi
                if [ -d "${SOURCES[$i]}" ]; then
                        echoAndLog "Copying content of ${SOURCES[$i]} to $path_opengnsys_base/${TARGETS[$i]}"
                        cp -ar "${SOURCES[$i]}/*" "${path_opengnsys_base}/${TARGETS[$i]}"
                fi
        done
        popd
}

####################################################################
### Funciones de compilación de códifo fuente de servicios
####################################################################

# Compilar los servicios de OpenGNsys
function servicesCompilation ()
{
        local hayErrores=0

        # Compilar OpenGNSys Server
        echoAndLog "${FUNCNAME}(): Compiling OpenGNSys Admin Server"
        pushd $WORKDIR/opengnsys/admin/Services/ogAdmServer
        make && make install
        if [ $? -ne 0 ]; then
                echoAndLog "${FUNCNAME}(): error while compiling OpenGNSys Admin Server"
                hayErrores=1
        fi
        popd
        # Compilar OpenGNSys Repository Manager
        echoAndLog "${FUNCNAME}(): Compiling OpenGNSys Repository Manager"
        pushd $WORKDIR/opengnsys/admin/Services/ogAdmRepo
        make && make install
        if [ $? -ne 0 ]; then
                echoAndLog "${FUNCNAME}(): error while compiling OpenGNSys Repository Manager"
                hayErrores=1
        fi
        popd
        # Compilar OpenGNSys Client
        echoAndLog "${FUNCNAME}(): Compiling OpenGNSys Admin Client"
        pushd $WORKDIR/opengnsys/admin/Services/ogAdmClient
        make && mv ogAdmClient ../../../client/nfsexport/bin
        if [ $? -ne 0 ]; then
                echoAndLog "${FUNCNAME}(): error while compiling OpenGNSys Admin Client"
                hayErrores=1
        fi
        popd

        return $hayErrores
}


####################################################################
### Funciones instalacion cliente opengnsys
####################################################################

function openGnsysClientCreate()
{
        local OSDISTRIB OSCODENAME

        local hayErrores=0

        echoAndLog "${FUNCNAME}(): Copying OpenGNSys Client files."
        cp -ar $WORKDIR/opengnsys/client/nfsexport/* $INSTALL_TARGET/client
        find $INSTALL_TARGET/client -name .svn -type d -exec rm -fr {} \; 2>/dev/null
        echoAndLog "${FUNCNAME}(): Copying OpenGNSys Cloning Engine files."
        mkdir -p $INSTALL_TARGET/client/lib/engine/bin
        cp -ar $WORKDIR/opengnsys/client/engine/*.lib $INSTALL_TARGET/client/lib/engine/bin
        if [ $? -ne 0 ]; then
                errorAndLog "${FUNCNAME}(): error while copying engine files"
                hayErrores=1
        fi

        # Cargar Kernel, Initrd y paquetes udeb para la distribución del servidor (o por defecto).
        OSDISTRIB=$(lsb_release -i | awk -F: '{sub(/\t/,""); print $2}') 2>/dev/null
        OSCODENAME=$(lsb_release -c | awk -F: '{sub(/\t/,""); print $2}') 2>/dev/null
        if [ "$OSDISTRIB" = "Ubuntu" -a -n "$OSCODENAME" ]; then
                echoAndLog "${FUNCNAME}(): Loading Kernel and Initrd files for $OSDISTRIB $OSCODENAME."
                $INSTALL_TARGET/bin/initrd-generator -t $INSTALL_TARGET/tftpboot -v "$OSCODENAME"
                if [ $? -ne 0 ]; then
                        errorAndLog "${FUNCNAME}(): error while generating initrd OpenGNSys Admin Client"
                        hayErrores=1
                fi
                echoAndLog "${FUNCNAME}(): Loading udeb files for $OSDISTRIB $OSCODENAME."
                $INSTALL_TARGET/bin/upgrade-clients-udeb.sh "$OSCODENAME"
                if [ $? -ne 0 ]; then
                        errorAndLog "${FUNCNAME}(): error while upgrading udeb files OpenGNSys Admin Client"
                        hayErrores=1
                fi
        else
                echoAndLog "${FUNCNAME}(): Loading default Kernel and Initrd files."
                $INSTALL_TARGET/bin/initrd-generator -t $INSTALL_TARGET/tftpboot/
                if [ $? -ne 0 ]; then
                        errorAndLog "${FUNCNAME}(): error while generating initrd OpenGNSys Admin Client"
                        hayErrores=1
                fi
                echoAndLog "${FUNCNAME}(): Loading default udeb files."
                $INSTALL_TARGET/bin/upgrade-clients-udeb.sh
                if [ $? -ne 0 ]; then
                        errorAndLog "${FUNCNAME}(): error while upgrading udeb files OpenGNSys Admin Client"
                        hayErrores=1
                fi
        fi

        if [ $hayErrores -eq 0 ]; then
                echoAndLog "${FUNCNAME}(): Client generation success."
        else
                errorAndLog "${FUNCNAME}(): Client generation with errors"
        fi

        return $hayErrores
}


# Configuración básica de servicios de OpenGNSys
function openGnsysConfigure()
{
        echoAndLog "openGnsysConfigure(): Copying init files."
        cp -p $WORKDIR/opengnsys/admin/Services/opengnsys.init /etc/init.d/opengnsys
        cp -p $WORKDIR/opengnsys/admin/Services/opengnsys.default /etc/default/opengnsys
        update-rc.d opengnsys defaults
        echoAndLog "openGnsysConfigure(): Creating OpenGNSys config file in \"$INSTALL_TARGET/etc\"."
        perl -pi -e "s/SERVERIP/$SERVERIP/g" $INSTALL_TARGET/etc/ogAdmServer.cfg
        perl -pi -e "s/SERVERIP/$SERVERIP/g" $INSTALL_TARGET/etc/ogAdmRepo.cfg
        echoAndLog "${FUNCNAME}(): Creating Web Console config file"
        OPENGNSYS_CONSOLEURL="http://$SERVERIP/opengnsys"
        perl -pi -e "s/SERVERIP/$SERVERIP/g; s/OPENGNSYSURL/${OPENGNSYS_CONSOLEURL//\//\\/}/g" $INSTALL_TARGET/www/controlacceso.php
        sed -e "s/SERVERIP/$SERVERIP/g" -e "s/OPENGNSYSURL/${OPENGNSYS_CONSOLEURL//\//\\/}/g" $WORKDIR/opengnsys/admin/Services/ogAdmClient/ogAdmClient.cfg > $INSTALL_TARGET/client/etc/ogAdmClient.cfg
        echoAndLog "openGnsysConfiguration(): Starting OpenGNSys services."
        /etc/init.d/opengnsys start
}


#####################################################################
#######  Función de resumen informativo de la instalación
#####################################################################

function installationSummary(){
        echo
        echoAndLog "OpenGNSys Installation Summary"
        echo       "=============================="
        echoAndLog "OpenGNSys installation directory: $INSTALL_TARGET"
        echoAndLog "OpenGNSys repository directory:   $INSTALL_TARGET/images"
        echoAndLog "TFTP configuracion directory:     /var/lib/tftpboot"
        echoAndLog "DHCP configuracion file:          /etc/dhcp3/dhcpd.conf"
        echoAndLog "NFS configuracion file:           /etc/exports"
        echoAndLog "OpenGNSys Web Console URL:        $OPENGNSYS_CONSOLEURL"
        echoAndLog "Web Console admin user:           $OPENGNSYS_DB_USER"
        echoAndLog "Web Console admin password:       $OPENGNSYS_DB_PASSWD"
        echoAndLog "Web Console default user:         $OPENGNSYS_DB_DEFAULTUSER"
        echoAndLog "Web Console default password:     $OPENGNSYS_DB_DEFAULTPASSWD"
        echo
        echoAndLog "Post-Installation Instructions:"
        echo       "==============================="
        echoAndLog "Review or edit all configuration files."
        echoAndLog "Insert DHCP configuration data and restart service."
        echoAndLog "Log-in as Web Console admin user."
        echoAndLog " - Review default Organization data and default user."
        echoAndLog "Log-in as Web Console organization user."
        echoAndLog " - Insert OpenGNSys data (rooms, computers, etc)."
echo
}



#####################################################################
####### Proceso de instalación de OpenGNSys
#####################################################################


echoAndLog "OpenGNSys installation begins at $(date)"

# Detectar parámetros de red por defecto
getNetworkSettings
if [ $? -ne 0 ]; then
        errorAndLog "Error reading default network settings."
        exit 1
fi

# Actualizar repositorios
apt-get update

# Instalación de dependencias (paquetes de sistema operativo).
declare -a notinstalled
checkDependencies DEPENDENCIES notinstalled
if [ $? -ne 0 ]; then
        installDependencies notinstalled
        if [ $? -ne 0 ]; then
                echoAndLog "Error while installing some dependeces, please verify your server installation before continue"
                exit 1
        fi
fi

# Arbol de directorios de OpenGNSys.
openGnsysInstallCreateDirs ${INSTALL_TARGET}
if [ $? -ne 0 ]; then
        errorAndLog "Error while creating directory paths!"
        exit 1
fi

# Descarga del repositorio de código en directorio temporal
#svnCheckoutCode $SVN_URL
svnExportCode $SVN_URL
if [ $? -ne 0 ]; then
        errorAndLog "Error while getting code from svn"
        exit 1
fi

# Compilar código fuente de los servicios de OpenGNSys.
servicesCompilation
if [ $? -ne 0 ]; then
        errorAndLog "Error while compiling OpenGnsys services"
        exit 1
fi

# Configurando tftp
tftpConfigure

# Configuración NFS
nfsConfigure
if [ $? -ne 0 ]; then
        errorAndLog "Error while configuring nfs server!"
        exit 1
fi

# Configuración ejemplo DHCP
dhcpConfigure
if [ $? -ne 0 ]; then
        errorAndLog "Error while copying your dhcp server files!"
        exit 1
fi

# Copiar ficheros de servicios OpenGNSys Server.
openGnsysCopyServerFiles ${INSTALL_TARGET}
if [ $? -ne 0 ]; then
        errorAndLog "Error while copying the server files!"
        exit 1
fi

# Instalar Base de datos de OpenGNSys Admin.
isInArray notinstalled "mysql-server"
if [ $? -eq 0 ]; then
        mysqlSetRootPassword ${MYSQL_ROOT_PASSWORD}
else
        mysqlGetRootPassword

fi

mysqlTestConnection ${MYSQL_ROOT_PASSWORD}
if [ $? -ne 0 ]; then
        errorAndLog "Error while connection to mysql"
        exit 1
fi
mysqlDbExists ${MYSQL_ROOT_PASSWORD} ${OPENGNSYS_DATABASE}
if [ $? -ne 0 ]; then
        echoAndLog "Creating Web Console database"
        mysqlCreateDb ${MYSQL_ROOT_PASSWORD} ${OPENGNSYS_DATABASE}
        if [ $? -ne 0 ]; then
                errorAndLog "Error while creating Web Console database"
                exit 1
        fi
else
        echoAndLog "Web Console database exists, ommiting creation"
fi

mysqlCheckUserExists ${MYSQL_ROOT_PASSWORD} ${OPENGNSYS_DB_USER}
if [ $? -ne 0 ]; then
        echoAndLog "Creating user in database"
        mysqlCreateAdminUserToDb ${MYSQL_ROOT_PASSWORD} ${OPENGNSYS_DATABASE} ${OPENGNSYS_DB_USER} "${OPENGNSYS_DB_PASSWD}"
        if [ $? -ne 0 ]; then
                errorAndLog "Error while creating database user"
                exit 1
        fi

fi

mysqlCheckDbIsEmpty ${MYSQL_ROOT_PASSWORD} ${OPENGNSYS_DATABASE}
if [ $? -eq 0 ]; then
        echoAndLog "Creating tables..."
        if [ -f $WORKDIR/$OPENGNSYS_DB_CREATION_FILE ]; then
                mysqlImportSqlFileToDb ${MYSQL_ROOT_PASSWORD} ${OPENGNSYS_DATABASE} $WORKDIR/$OPENGNSYS_DB_CREATION_FILE
        else
                errorAndLog "Unable to locate $WORKDIR/$OPENGNSYS_DB_CREATION_FILE!!"
                exit 1
        fi
fi

# copiando paqinas web
installWebFiles

# creando configuracion de apache2
openGnsysInstallWebConsoleApacheConf $INSTALL_TARGET /etc/apache2
if [ $? -ne 0 ]; then
        errorAndLog "Error configuring Apache for OpenGNSYS Admin"
        exit 1
fi

popd

# Creando la estructura del cliente
openGnsysClientCreate
if [ $? -ne 0 ]; then
        errorAndLog "Error creating clients"
        exit 1
fi

# Configuración de servicios de OpenGNSys
openGnsysConfigure

# Mostrar sumario de la instalación e instrucciones de post-instalación.
installationSummary

#rm -rf $WORKDIR
echoAndLog "OpenGNSys installation finished at $(date)"