setup

#!/bin/bash

IPADDRESS=192.168.56.101
NETMASK=255.255.255.0
INTERFACE=eth1

PROJECT_NAME=Tester #no spaces!

FILESURL=https://raw.githubusercontent.com/draftchallenge/continuous-integration-setup/master/

WITH_PAUSE_AFTER_EACH_STEP=true

#####################################################################################
#see bottom first
#####################################################################################

checkPermissions() {
    if [[ $EUID -ne 0 ]]; then
        exitWithError "This script must run as root"
    fi
}

addJenkinsToAptList() {
    echo "01/11 Adding Jenkins to apt repository"
    
    file=/etc/apt/sources.list.d/jenkins.list
    
    rm -f $file
    
    wget -q -O - http://pkg.jenkins-ci.org/debian/jenkins-ci.org.key | sudo apt-key add -
    echo "deb http://pkg.jenkins-ci.org/debian binary/" > $file
    pause
}

installPackages() {
    echo "02/11 Installing updates and packages - please be patient"
    
    apt-get -q update
    apt-get -q -y --force-yes install openjdk-7-jdk subversion apache2 libapache2-svn python-setuptools libapache2-mod-python enscript jenkins trac sqlite3 openssh-server
    #apt-get -q -y --force-yes install openjdk-7-jdk subversion apache2=2.2.22-1ubuntu1.5 libapache2-svn python-setuptools libapache2-mod-python enscript jenkins=1.557 trac=0.12.2-1build1 sqlite3 openssh-server
    
    pause
}

getFilesFromGithub() {
    echo "03/11 Downloading files from Github for setup"
    
    rm -rf files/
    rm -f adduser
    rm -f rollback
    
    mkdir -p files/
    local files=( "/apache_dav_svn.conf" "/apache_jenkins" "/apache_ports.conf" "/apache_python.conf" "/default_jenkins" "/svn_post-commit" "/svn_trac-hook" "/www_index.html" )
    
    for i in "${files[@]}"
    do
        wget -q $FILESURL"files"$i -O "files/$i"
    done
    wget -q $FILESURL"adduser" -O adduser
    wget -q $FILESURL"rollback" -O rollback
    
    pause
}

prepareLocalNetwork() {
    echo "04/11 Preparing local host only network at $INTERFACE with $IPADDRESS"
    
    ifconfig $INTERFACE $IPADDRESS netmask $NETMASK

    file="/etc/ssh/sshd_config"

    restoreFromBakFileIfExisitsAndCreate $file
    
    echo "ListenAddress $IPADDRESS" >> $file
    echo "ListenAddress 127.0.0.1" >> $file
    
    pause
}

prepareApache() {
    echo "05/11 Preparing Apache with mods, index file and ports"
    
    a2enmod proxy
    a2enmod proxy_http
    a2enmod rewrite

    cp files/www_index.html /var/www/index.html
    chown www-data:www-data /var/www/index.html

    file=/etc/apache2/ports.conf
    restoreFromBakFileIfExisitsAndCreate $file
    
    cp files/apache_ports.conf $file
    sed -i "s/IPADDRESS/$IPADDRESS/g" $file
    
    pause
}

prepareDAV() {
    echo "06/11 Preparing DAV for login and other services"
    
    file=/etc/apache2/mods-enabled/dav_svn.conf
    restoreFromBakFileIfExisitsAndCreate $file

    cp files/apache_dav_svn.conf $file
    chown www-data:www-data $file

    touch /etc/apache2/dav_svn.passwd
    
    pause
}

prepareSubversion() {
    echo "07/11 Preparing Subversion and Hooks to Trac and Jenkins"
    
    dir=/var/svn
    
    rm -rf $dir
    
    mkdir $dir
    svnadmin create $dir/repos
    chown -R www-data:www-data $dir

    prepareHook $dir post-commit
    prepareHook $dir trac-hook
    
    echo "http://localhost/jenkins/job/$PROJECT_NAME/build" >> $dir/repos/hooks/post-commit
    
    pause
}

prepareTrac() {
    echo "08/11 Prepare Trac and connect to SVN and Apache"
    dir=/var/www/trac/repos
    
    rm -rf $dir
    mkdir -p $dir

    trac-admin $dir initenv "$PROJECT_NAME" sqlite:db/trac.db svn /var/svn/repos

    chown -R www-data.www-data /var/www/trac

    cp files/apache_python.conf /etc/apache2/mods-enabled/python.conf
    chown root:root /etc/apache2/mods-enabled/python.conf
    
    pause
}

prepareJenkins() {
    echo "09/11 Prepare Jenkins and disable default site, enable jenkins site"
    
    rm -f /etc/apache2/sites-available/jenkins
    cp files/default_jenkins /etc/default/jenkins

    cp files/apache_jenkins /etc/apache2/sites-available/jenkins

    a2dissite default
    a2ensite jenkins
    
    pause
}

restartServices() {
    echo "10/11 Restart services"
    service jenkins restart
    service apache2 restart
    service ssh restart
    
    pause
}

testSetup() {
    echo "11/11 Verifying setup - be patient as script needs to wait (30s) until all services are running"
    
    sleep 30
    
    netstat=`netstat -tunl`
    checkService "$netstat" "127.0.0.1:22"
    checkService "$netstat" "$IPADDRESS:22"

    checkService "$netstat" "127.0.0.1:80"
    checkService "$netstat" "$IPADDRESS:80"

    checkService "$netstat" "127.0.0.1:8080"

    checkHTTP http://localhost/ "HTTP/1.1 200 OK"
    checkHTTP http://localhost/jenkins/ "HTTP/1.1 401 Authorization Required"
    checkHTTP http://localhost/svn/ "HTTP/1.1 401 Authorization Required"
    checkHTTP http://localhost/trac/ "HTTP/1.1 401 Authorization Required"

    rm -rf files/
    
    echo "...Done."
    echo "Don't forget to run 'bash ./adduser <User name>' to add users for authentication."
}

pause() {
    if [ "$WITH_PAUSE_AFTER_EACH_STEP" = true ]; then
        read -p "Done. Press [Enter] key to continue"
    fi
}

prepareHook() {
    cp files/svn_$2 $1/repos/hooks/$2
    chown www-data:www-data $1/repos/hooks/$2
    chmod +x $1/repos/hooks/$2
}

checkService() {
    if [[ ! $1 =~ $2 ]]; then
        exitWithError "Setup was not correct: $2 is not running"
    fi
}

checkHTTP() {
    result=`curl -sI $1`
    if [[ ! "$result" == "$2"* ]]; then
        exitWithError "Setup was not correct: $1 is not OK"
    fi
}

restoreFromBakFileIfExisitsAndCreate() {
    if [ -f "$1.bak" ]; then
        cp "$1".bak "$1"
    fi
    cp "$1" "$1".bak
}

exitWithError() {
    echo "$1" 1>&2
    echo "...Abort" 1>&2
    exit 1
}

checkPermissions
addJenkinsToAptList
installPackages
getFilesFromGithub
prepareLocalNetwork
prepareApache
prepareDAV
prepareSubversion
prepareTrac
prepareJenkins
restartServices
testSetup