Git Apache Vhost Setup

gitsite-setup.php

#!/usr/bin/php
<?php
 
define('NL',"\n");
define('FILE_PRSCRIPT_PATH', '/usr/local/scripts/');
define('FILE_PRSCRIPT', '/usr/local/scripts/pullrepo');


if($argv[0] == __FILE__ OR $argv[0] == basename(__FILE__)){
	array_shift($argv);
}

echoln("Git Deploy Manager v1.0", 'light_green');

define('DEBUG', (current($argv) == "debug"));

switch(current($argv)){
	case "check";
	exit;
	break;
	case "setup": break;
	case "debug": break;
	case "kill": action_kill(null); break;
	default: 
		echoln("Valid commands: setup, kill [sitename]");
		exit;
}

if(strpos(ex("whoami"), "root") !== 0 && DEBUG == 0){
	echoln("Need to be root", "red");
	echoln("You are: " . colorString(ex("whoami"),"green"));
	exit;
}

$apacheUser = action_getApacheUser();
echoln("Apache user '$apacheUser'");
action_checkGitUser();

$hostnames = action_hostname();
$serverName = $hostnames[0];
if(empty($serverName)){
	echoln("You have no hostname?", 'red');
	exit;
}

$gitRepoName = ask_question("Git repo name (no path, no .git) [Leave empty for none]");
$gitBased = !empty($gitRepoName);

if($gitBased){
	action_gitDeployHookFile();
	action_gitSetupRepo($gitRepoName, $apacheUser, $serverName);
}else{
	action_setupVhostPath($serverName);
}

action_setOwnerPermissions($apacheUser, $serverName, $gitRepoName);
 
$vhost = template_vhost($serverName, $hostnames);

 
echoln("Example vhost config:","light_gray");
echoln("---------------------","light_gray");
echoln($vhost ,"light_blue");
echoln("---------------------","light_gray");
if(ask_yn("Want me to make that for you", "white")){
	file_put("/etc/apache2/sites-available/$serverName.conf", $vhost);
	ex("a2ensite $serverName.conf");
	ex("service apache2 reload");
}
 
echoln("Done!", "purple");

if(strpos(ex("sudo -ugit sudo -n true"),"sorry")){
	echoln("Your git user doesn't have password free sudo!", "red");
	echoln("git     ALL=($apacheUser:$apacheUser) NOPASSWD: /usr/local/scripts/pullrepo", "white");
	echoln("Add the above line using " . colorString("visudo", "white"), "red");
}


/**
 * Actions
 */

function action_hostname(){
	$hosts = array(ask_question("Server hostname (use www. if you want an alias)"));
	preg_match('/www\./i', current($hosts), $result);
	if(count($result)){
		array_unshift($hosts, str_replace("www.", "", $hosts[0]));
	}
	return $hosts;
}

function action_getApacheUser(){
	if(strpos(ex("id www-data"), 'no such user')){
		$apacheUser = ask_question("Apache user");
	}else{
		$apacheUser = "www-data";
	}
	return $apacheUser;
}

function action_checkGitUser(){


	if(strpos(ex("id git"), "no such user")  ){
		echoln("Need to make git");
		ex("useradd -d /home/git -m git");
		echoln("Give user 'git' a password:");
		ex("passwd git");
		ex('mkdir /home/git/.ssh');
		ex('cp ~/.ssh/authorized_keys /home/git/.ssh/authorized_keys');
		ex('chmod 755 /home/git/.ssh');
		ex('chmod 600 /home/git/.ssh/authorized_keys');
		ex("chown -R git:git /home/git");
	}
}

function action_kill($site_arg){
	echoln("Available sites: ", 'yellow');
	echoln(ex("ls /var/www/"), "red");
	$site = $site_arg ?: ask_question("Site name");
	if(is_dir("/var/www/$site")){
		$gitOriginUrl = ex("git --git-dir=/var/www/$site/deploy/.git config --get remote.origin.url");

		ex("rm -rf /var/www/$site");
		echoln("Removed var/www/$site");
		echoln('Origin Url: '.$gitOriginUrl, 'purple');
		if($gitOriginUrl){
			echoln("Git found @ $gitOriginUrl", 'red');
			ex("rm -rf $gitOriginUrl");
			echoln("Removed Bare Git Repo");
		}else{
			echoln("No Git linked", 'red');
		}

		if(is_file("/etc/apache2/sites-available/$site.conf")){
			ex("a2dissite $site.conf");
			ex("rm /etc/apache2/sites-available/$site.conf");
			ex("service apache2 reload");
			echoln("Apache VHOST removed and restarted",'green');
		}
	}
	
	echoln("Kill Complete");
	exit;
}

function action_gitDeployHookFile(){
	if(!is_file(FILE_PRSCRIPT)){
		echoln("Need Deploy Hook",'purple');
		if(!is_dir(FILE_PRSCRIPT_PATH)){
			echoln("Create Path ",'light_purple');
			ex("mkdir " . FILE_PRSCRIPT_PATH);
		}
	}else{
		echoln("Deploy Hook Ready",'purple');
	}
	echoln("Checking for Script folder... ",'light_purple');
	
	echoln("done",'purple');
	 
	echoln("Checking for script file... ",'light_purple');
	if(!is_file(FILE_PRSCRIPT)){
		echoln("making",'light_purple');
		file_put(FILE_PRSCRIPT, template_deployHook());
		ex("chmod +x " . FILE_PRSCRIPT);
	}
	echoln("done",'purple');
}

function action_gitSetupRepo($gitRepoName, $apacheUser, $hostname){
	echo "Checking if repo exists... ";
	if(!is_dir("/home/git/$gitRepoName.git")){
		echoln("making repo");
		ex("git init /home/git/$gitRepoName.git --bare");
		action_setupVhostPath($hostname);
		ex("git clone /home/git/$gitRepoName.git /var/www/$hostname/deploy");
	 	ex("rm -rf /var/www/$hostname/public");
	 	ex("ln -s /var/www/$hostname/deploy/public /var/www/$hostname/public");
		file_put("/home/git/$gitRepoName.git/hooks/post-receive", template_gitPRScript($apacheUser, $gitRepoName, $hostname));
		ex("chmod +x /home/git/$gitRepoName.git/hooks/post-receive");
	}
}

function action_setupVhostPath($host){
	ex("mkdir /var/www/$host");
	ex("mkdir /var/www/$host/logs");
	ex("mkdir /var/www/$host/public");
}

function action_setOwnerPermissions($apacheUser, $servername, $siteID){
	ex("chown -R $apacheUser:$apacheUser /var/www/$servername");
	if( is_dir("/home/git/$siteID.git") ){
		ex("chown -R git:git /home/git/$siteID.git");
	}
}
/**
 * Helpers
 */

function echoln($str, $color="black"){
	echo colorString($str,$color) . NL;
}

function colorString($str, $color="black"){
	return "\033[" . colors($color) . "m" . $str . "\033[0m";
}

function ex($cmd){
	if(DEBUG){
		echoln("cmd: " . $cmd, 'light_red');
		return "";
	}else{
		return `$cmd 2>&1`;
	}
}

function file_put($file, $contents){
	if(DEBUG){
		echoln("put: " . $file . " : " . substr($contents, 0, 10) . " ... ");
		return true;
	}else{
		return file_put_contents($file, $contents);
	}
	
}

function capture_cmd($cmd){
	$output = array();
	ex($cmd, $output);
	return $output;
}
function read_line(){
		return strtolower(trim(fgets(STDIN)));
}
function read_yn(){
		$val = read_line();
		return (($val?:'y') == 'y');
}
 
function logbool($val){
		return $val ? "Yes" : "No";
}
function ask_question($question, $default = ""){
	echo colorString($question . ': ','yellow');
	$answer = read_line();

	return ($answer ?: $default);
}
function ask_yn($question){
	echo colorString($question . ' [Y/n]: ', 'yellow');
	return read_yn();
}

/**
 * Templates
 */

function template_serverNames($hosts){
	$server = "ServerName " . array_shift($hosts) . NL;
	if(count($hosts)){
		$server .=  "ServerAlias " . implode(" ", $hosts) . NL;
	}
	return $server;
}

function template_vhost($site, $hosts){
	return "<VirtualHost *:80>

	". template_serverNames($hosts) ."

	SetEnv APP_ENVIRONMENT production
 
	DocumentRoot /var/www/$site/public

	ErrorLog /var/www/$site/logs/error.log
	CustomLog /var/www/$site/logs/access.log common
 
	<Directory /var/www/$site/public>
		Options -Indexes +FollowSymLinks +MultiViews
		AllowOverride All
		Order allow,deny
		allow from all
	</Directory>
 
	ServerAdmin [email protected]
</VirtualHost>";
}

function template_proxy($path, $to, $hosts){
return "<VirtualHost *:80>
	". template_serverNames($hosts) ."
	ProxyPass $path http://$to retry=0 timeout=5
	ProxyPassReverse $path http://$to
</VirtualHost>";
}

function template_ssl($certFile, $keyFile, $chainFile){
	return "
	SSLEngine on
   SSLProtocol all -SSLv2
   SSLCipherSuite ALL:!ADH:!EXPORT:!SSLv2:RC4+RSA:+HIGH:+MEDIUM
   SSLCertificateFile $certFile
   SSLCertificateKeyFile $keyFile
   SSLCertificateChainFile /etc/apache2/ssl/sub.class1.server.ca.pem
   SSLCACertificateFile /etc/apache2/ssl/ca.pem
   ";
}

function template_gitPRScript($apacheUser, $gitRepoName, $hostname){
	return "#!/bin/sh
sudo -u$apacheUser -g$apacheUser /usr/local/scripts/pullrepo /var/www/$hostname/deploy";
}

function template_deployHook(){
	return '
	#!/bin/sh
	cd "$1"
	git reset --hard HEAD
	git pull
	';
}

/**
 * Lookups
 */
function colors($clr){
	switch($clr){
		case 'white' : return '1;37'; break;
		case 'dark_gray' : return '1;30'; break;
		case 'blue' : return '0;34'; break;
		case 'light_blue' : return '1;34'; break;
		case 'green' : return '0;32'; break;
		case 'light_green' : return '1;32'; break;
		case 'cyan' : return '0;36'; break;
		case 'light_cyan' : return '1;36'; break;
		case 'red' : return '0;31'; break;
		case 'light_red' : return '1;31'; break;
		case 'purple' : return '0;35'; break;
		case 'light_purple' : return '1;35'; break;
		case 'brown' : return '0;33'; break;
		case 'yellow' : return '1;33'; break;
		case 'light_gray' : return '0;37'; break;
		default: return '0;30'; //black
	};
}