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#!/bin/sh
#================================================================================
#name           :   EazyLamp
#version        :   0.1a
#description    :   Easy-to-use on click setup/transfer tool for lamp server
#                   configuration under linux, as easy as wamp server.
#author         :   latel (latelx64@gmail.com)
#github         :   https://github.com/latel/EasyLamp
#liencense      :   GPL
#date           :   2013/12/20
#------------------------------------------------------------
#history        :   2013/12/20    latel   first release
#================================================================================

BASE_DIR=$PWD/${0%/*}/../
cd $BASE_DIR
BASE_DIR=$PWD
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin:$BASE_DIR/install/functions
TTY=`ps|grep $$|awk '{print $2}'`
USER=`who|grep ${TTY}|awk '{print $1}'`


#adjust your settings as follows which will be refered during installation
#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#leave values to "do_not_install" on the item you don't wanted
#apache
apache_version="2.4.7"
#php
php_version="5.5.7"
#mysql
mysql_version="5.6.15"
mysql_password="5070474849"

#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

#this script shall only run in root priviledge
get_root(){
    if [[ $EUID -ne 0 ]];then
        echo "This script must be run as root" 1>&2
        exit 1
    fi
}

#detect os type
detect_os(){
    if uname -a | grep -i "arch" >/dev/null 2>&1;then
        echo "arch"
    elif uname -a | grep -i "ubuntu|debian">/dev/null 2>&1;then
        echo "debian"
    elif uname -a | grep -i "centos|redhat">/dev/null 2>&1;then
        echo "redhat"
    elif cat /proc/version | grep -i "arch">/dev/null 2>&1;then
        echo "arch"
    elif cat /proc/version | grep -i "ubuntu|debian">/dev/null 2>&1;then
        echo "debian"
    elif cat /proc/version | grep -i "centos|redhat">/dev/null 2>&1;then
        echo "redhat"
    else
        echo "generic"
    fi
}

#check whether a command is already available in system
check_command_exists(){
    local command=$1
    local stop=$2
    if hash $1 2>/dev/null;then
        echo "0"
    else
        echo "1"
        if [ $2 == "1" ];then
            echo 'building tools $1 not installed. please do it yourself'
            exit 1
        fi
    fi
}

lowcase(){
    word=$1
    echo $word | tr '[A-Z]' '[a-z]'
}

#choose yes or no
confirm(){
    local prompt=$1
    local yaction=$2
    local naction=$3
    while true; do
        read -p "$prompt(y/n)?: " choice
        choice=`lowcase $choice`
        case $choice in
            y ) eval "$yaction";return 1;break;;
            n ) eval "$naction";return 0;break;;
            * ) echo "wrong input, please type y or n only."
        esac
    done
}

#detect source code's compress format
#execute accordingly extract command
extract_source(){
    #currently, only tar.gz and tar.bz2 format are supported
    local zip_name=`lowcase $1`
    local zip_destination=$2
    cd $BASE_DIR/install
    if [ -f packages/${zip_name}.tar.gz ];then
        tar zxvf packages/${zip_name}.tar.gz -C $zip_destination
        return 0
    elif [ -f packages/${zip_name}.tar.bz2 ];then
        tar jxvf packages/${zip_name}.tar.bz2 -C $zip_destination
        return 0
    else
        echo "!!no file is available for source ${zip_name}, installation aborted."
        exit 1
    fi
}

#install building tools
install_tools(){
    if [ "`detect_os`" == "arch" ];then
        pacman -Syu
        pacman -S gcc g++ make cmake wget perl curl openssl build-essential
    elif [ "`detect_os`" == "debian" ];then
        apt-get update
        apt-get install gcc g++ make cmake wget perl curl openssl build-essential
    elif [ "`detect_os`" == "redhat" ];then
        yum -y gcc g++ make cmake wget perl curl openssl build-essential
    fi

    check_command_exists "gcc" "1"
    check_command_exists "g++" "1"
    check_command_exists "make" "1"
    check_command_exists "cmake" "1"
    check_command_exists "wget" "1"
    check_command_exists "perl" "1"
    check_command_exists "curl" "1"
}

#install dialog
install_dialog(){
    #prepare files
    tar xvf install/packages/dialog.tar.gz -C install/temp/
    #install
    cd install/temp/dialog-1.2-20130928
    ./configure
    make
    make install
    cd $BASE_DIR
}

#install apache
install_apache(){
    cd $BASE_DIR
    #check previous installation
    if [ -d apache* ];then
        confirm "You have installed `ls|grep apache` already, uninstall first" "rm -r apache*" "apache_version=`ls|grep apache|grep -oE '((([0-9]){1,}.){2}[0-9]{1,}){1}'` ; return 0"
        if [ $? != "1" ];then
            return 0
        fi
    fi
    #install dependencies

    #make directory
    cd $BASE_DIR
    [[ -d apache-${apache_version} ]] || mkdir apache-${apache_version}
    [[ -d www ]] || mkdir www
    [[ -d logs ]] || mkdir logs
    [[ -d conf ]] || mkdir conf
    #prepare files
    if [ -f www/index.php ];then
        echo "htdocs files existed, ignore."
    else
        touch www/index.php
        echo "<?php echo phpinfo(); ?>" >> www/index.php
    fi
    extract_source "httpd-${apache_version}" "${BASE_DIR}/install/temp/"
    cd $BASE_DIR
    #install
    cd install/temp/httpd-${apache_version}
    ./configure\
        --prefix=$BASE_DIR/apache-${apache_version}\
        --logfiledir=$BASE_DIR/logs\
        --enable-so
        #--bindir=/usr/bin\
        #--sbindir=/usr/sbin\
        #--libdir=/usr/lib/httpd/lib\
        #--libexecdir=/usr/lib/httpd/modules\
        #--installbuilddir=/usr/lib/httpd/build\
        #--htmldir=$BASE_DIR/www\
    make
    make install

    #configuration
    cd $BASE_DIR
    groupadd httpd >/dev/null 2>&1 #create group and user if not exitsts
    useradd -s /bin/false -g httpd httpd >/dev/null 2>&1
    cd apache-${apache_version}
    mv htdocs/index.html $BASE_DIR/www/index.html
    cp conf/httpd.conf conf/httpd.conf.bak #backup original conf file
    sed -i -e "s/User daemon/User httpd/" -e "s/Group daemon/Group httpd/" conf/httpd.conf
    sed -i -e "s/apache-${apache_version}\/htdocs/www/" conf/httpd.conf
    sed -i -e "s/#ServerName www.example.com:80/ServerName www.example.com:80/" conf/httpd.conf
    sed -i -e "s/ErrorLog \"logs\/error_log\"/ErrorLog \"${BASE_DIR//\//\\/}\/logs\/httpd_error_log\"/" conf/httpd.conf
    sed -i -e "s/CustomLog \"logs\/access_log\" common/CustomLog \"${BASE_DIR//\//\\/}\/logs\/httpd_access_log\" common/" conf/httpd.conf
    #make files for later-reading
    cd $BASE_DIR
    touch {logs/httpd_access_log,logs/httpd_error_log}

    #cleanup
    cp apache-${apache_version}/bin/httpd apache-${apache_version}/bin/httpd.bak
    strip apache-${apache_version}/bin/httpd
}

#install php
install_php(){
    cd $BASE_DIR
    #check previous installation
    if [ -d php* ];then
        confirm "You'v installed `ls|grep php` already, uninstall first" "rm -r php*" "php_version=`ls|grep php|grep -oE '((([0-9]){1,}.){2}[0-9]{1,}){1}'` ; return 0"
        if [ $? != "1" ];then
            return 0
        fi
    fi
    #install dependencies

    #make directory
    [[ -d php-${php_version} ]] || mkdir php-${php_version}
    [[ -d logs ]] || mkdir logs
    [[ -d conf ]] || mkdir conf
    #prepare files
    extract_source "php-${php_version}" "${BASE_DIR}/install/temp/"
    cd $BASE_DIR
    #install

    cd install/temp/php-${php_version}
    ./configure\
        --prefix=$BASE_DIR/php-${php_version}\
        --with-apxs2=$BASE_DIR/apache-${apache_version}/bin/apxs\
        --with-config-file-path=$BASE_DIR/conf\
        --with-mysql\
        --with-pdo-mysql\
        --enable-pdo\
        --with-openssl\
        --with-zlib\
        --with-curl\
        --with-gd\
        --with-mcrypt #phpmyadmin need it
    make
    make install

    #configuration
    cd $BASE_DIR
    mv php/etc php-${php_version}/
    rm -r php
    cp install/temp/php-${php_version}/php.ini-development conf/php.ini
    sed -i -e "s/;date.timezone =/date.timezone = Asia\/Shanghai/" conf/php.ini
    sed -i -e "s/;extension=php_mysql.dll/extension=php_mysql.dll/" conf/php.ini
    sed -i -e "s/;extension=php_pdo_mysql.dll/extension=php_pdo_mysql.dll/" conf/php.ini
    sed -i -e "s/mysql.default_socket =/mysql.default_socket =${BASE_DIR//\//\\/}\/mysql-${mysql_version}\/mysql.sock/" conf/php.ini
    sed -i -e "s/pdo_mysql.default_socket=/pdo_mysql.default_socket=${BASE_DIR//\//\\/}\/mysql-${mysql_version}\/mysql.sock/" conf/php.ini
    cp install/resource/php5_module.conf apache-${apache_version}/conf/extra/php5_module.conf
    sed -i -e "s/PHPIniDir/PHPIniDir '${BASE_DIR//\//\\/}\/conf\/php.ini'/" apache-${apache_version}/conf/extra/php5_module.conf
    echo "Include conf/extra/php5_module.conf" >> apache-${apache_version}/conf/httpd.conf
    #do stuff for apache
    cp apache-${apache_version}/conf/httpd.conf conf/httpd.conf
}

#install mysql
install_mysql(){
    cd $BASE_DIR
    #check previous installation
    if [ -d mysql* ];then
        confirm "You'v installed `ls|grep mysql` already, uninstall first" "rm -r mysql*" "mysql_version=`ls|grep mysql|grep -oE '((([0-9]){1,}.){2}[0-9]{1,}){1}'` ; return 0"
        if [ $? != "1" ];then
            return 0
        fi
    fi
    #install dependencies

    #make directory
    cd $BASE_DIR
    [[ -d mysql-${mysql_version}/data ]] || mkdir -p mysql-${mysql_version}/data
    [[ -d logs ]] || mkdir logs
    [[ -d conf ]] || mkdir conf

    #prepare files
    extract_source "mysql-${mysql_version}" "${BASE_DIR}/install/temp/"
    cd $BASE_DIR
    #install
    cd install/temp/mysql-${mysql_version}
    cmake \
        -DCMAKE_INSTALL_PREFIX=$BASE_DIR/mysql-${mysql_version} \
        -DMYSQL_DATADIR=$BASE_DIR/mysql-${mysql_version}/data \
        -DMYSQL_UNIX_ADDR=$BASE_DIR/mysql-${mysql_version}/mysql.sock \
        -DEFAULT_CHARSET=utf8 \
        -DEFAULT_COLLATION=utf8_general_ci
        #add a user line for coomon user to use mysql
    #./configure\
    #    --prefix=$BASE_DIR/mysql-${mysql_version}
    make
    make install

    #configuration
    cd $BASE_DIR
    groupadd mysql #create group and user if not exitstsapache-${apache_version}
    useradd -s /bin/false -g mysql mysql
    mysql-${mysql_version}/scripts/mysql_install_db --basedir=$BASE_DIR/mysql-${mysql_version} --datadir=$BASE_DIR/mysql-${mysql_version}/data --user=mysql
    cp install/temp/mysql-${mysql_version}/support-files/mysql.server mysql-${mysql_version}/bin/mysql.server
    chmod +x mysql-${mysql_version}/bin/mysql.server
    cp install/temp/mysql-${mysql_version}/support-files/my-default.cnf mysql-${mysql_version}/my.cnf
    cd mysql-${mysql_version}
    echo "basedir = $BASE_DIR/mysql-${mysql_version}/" >> my.cnf
    echo "datadir = $BASE_DIR/mysql-${mysql_version}/data" >> my.cnf
    echo "port = 3306" >> my.cnf
    echo "socket = $BASE_DIR/mysql-${mysql_version}/mysql.sock" >> my.cnf
    echo "log-error = $BASE_DIR/logs/mysql_error.log" >> my.cnf
    echo "pid-file = $BASE_DIR/mysql-${mysql_version}/mysql.pid" >> my.cnf
    echo "user = mysql" >> my.cnf
    cd $BASE_DIR
    #make files for later-reading
    touch logs/mysql_error.log
    #adjust permissions
    chown -R mysql.mysql mysql-${mysql_version}
}

gen_scripts(){
    cd $BASE_DIR
    [[ -f ezlamp-st ]] && rm ezlamp-st
    [[ -f ezlamp-ki ]] && rm ezlamp-ki
    [[ -f ezlamp-ki ]] && rm greenfy
    cp install/resource/ezlamp-st ezlamp-st
    cp install/resource/ezlamp-ki ezlamp-ki
    cp install/resource/greenfy greenfy
    chmod +x ezlamp-st ezlamp-ki greenfy
    chown $USER ez* green*
}

run(){
    cd $BASE_DIR
    apache-${apache_version}/bin/apachectl -k start -f ${BASE_DIR}/conf/httpd.conf #start apache
    mysql-${mysql_version}/bin/mysql.server start --explicit_defaults_for_timestamp & #start mysql daemon
}

#doing some post configuration work
post_configuration(){
    cd $BASE_DIR
    mysql-${mysql_version}/bin/mysql_secure_installation
}

eazylamp(){
    echo
    echo
    echo "#############################################################################"
    echo
    echo "You are welcome to use this script to deploy your lamp,hope you like it."
    echo "If you have any question, please submit your issues to following address"
    echo "https://github.com/latel/EasyLamp"
    echo
    echo "#############################################################################"
    echo

    #user confirmation
    read -p "Are you sure you want to install lamp in $BASE_DIR(y/n)?" confirm
    cd $BASE_DIR
    if [ $confirm = y ];then
        get_root
        #install_tools
        touch /tmp/eazylamp_log #create file to log install information
        chattr +a /tmp/eazylamp_log #not allowed to delete, only add is alllowed
        detect_os
        if [ "`check_command_exists "dialog"`" == "1" ];then
            read -p "Dialog not detected, which can supply great installation experience, install(y/n)?: " confirm
            if [ $confirm == y ];then
                install_dialog
                [[ $? == 0 ]] && has_dialog = 1
            fi
        fi
        [[ -d install/temp ]] || mkdir install/temp
        echo "[1/7]installing apache..."
        install_apache
        echo "*apache2 installed"
        echo "[2/7]installing php..."
        install_php
        echo "*php5 installed"
        echo "[3/7]installing mysql..."
        install_mysql
        echo "*mysql installed"
        cd $BASE_DIR
        echo "[4/7]removing tempotary files"
        #rm -r install/temp
        echo "[5/7]do some peformance enhancements, please wait..."
        chown -R $USER www
        echo "[6/7]generating maintain scripts..."
        gen_scripts
        echo
        echo "install complete"
        echo "#======================================"
        echo "# apache: ${apache_version}"
        echo "# php   : ${php_version}"
        echo "# mysql : ${mysql_version}"
        echo "#======================================"
        echo
        echo "[7/7]All done.  (｡･ω･)ﾉ"
        echo
        echo "you may now delete the install folder now  "
        run
        echo "http://localhost/"
    else
        echo "please manually move your folder to your desire position"
    fi
}
eazylamp