#!/usr/bin/env ruby

####################################
#WebDomain script 
#Add or remove web domains server by ejabberd
#@author Aldo Gordillo < agordillos@gmail.com >
#@version 1.0 - 27-2-2012
####################################


require 'logger'

path = "/var/log/ejabberd/scripts.log"
file = File.open(path, File::WRONLY | File::APPEND | File::CREAT)
file.sync = true
$logger = Logger.new(file)
$logger.level = Logger::DEBUG
def log(text)
	$logger.info "SetWebDomain Script: " + text
end


#Config files
$ssconfig = '/etc/ejabberd/ssconfig.cfg'
$ejabberd = '/etc/ejabberd/ejabberd.cfg'

$domain_not_exists = "Domain don't exists"
$domain_exists = "Domain already exists"
$done = "Done"

def getOptionFromSSConfig(option)
  File.open($ssconfig, 'r') do |f1|  
    while line = f1.gets  
      line = line.gsub(/\n/,'')
      if line.match(/^#/)
        #Comments
      elsif line.match(/^#{option}/)
        return line.gsub(/#{option}/,'')
      end  
    end  
  end
  return "Undefined"
end

def getWebDomains()
	begin
		web_domains = getOptionFromSSConfig("web_domains=");
		#web_domains=["domain1","domain2"]
		return getElementsFromStringArray(web_domains);
	rescue Exception=>e
		return [""]
	end
end

def getElementsFromStringArray(stringArray)
	stringArray=stringArray[1,stringArray.length-2]
	return stringArray.split(",")
end

def getSSConfigStringFromDomainsArray(domainsArray)
	return "[" + domainsArray.join(",") + "]"
end

def getEjabberdStringFromDomainsArray(domainsArray)
	newDomains=[]
	domainsArray.each do |domain|
		newDomains << "\"" + domain + "\""
	end
	return "{hosts, [" + newDomains.join(" , ") + "]}."
end


#Write the domains array content in the corresponding configuration files
def writeDomains(domains)
	#SSconfig
	ssconfigText = File.read($ssconfig)
	newssconfig = ssconfigText.gsub(/web_domains=.*/, "web_domains=" + getSSConfigStringFromDomainsArray(domains))
	File.open($ssconfig, "w") { |file| file.puts newssconfig }

	#Ejabberd
	ejabbberdText = File.read($ejabberd)
	newEjabberdconfig = ejabbberdText.gsub(/^{hosts, .*/,  getEjabberdStringFromDomainsArray(domains))
	File.open($ejabberd, "w") { |file| file.puts newEjabberdconfig }

	return $done
end


def addDomain(domain,url)
	if(url)
		log("Add domain:" + domain + " with url:" + url)
	else
		log("Add domain:" + domain)
	end
	domains = getWebDomains();
	if !domains.include?(domain)
		domains << domain;
		if((url)&&(url!=domain))
			addDomainUrl(domain,url)
		end
		return writeDomains(domains)
	else
		return $domain_exists
	end
end

def removeDomain(domain)
	log("Remove domain:" + domain)
	domains = getWebDomains();
	if domains.include?(domain)
		domains.delete(domain)
		removeDomainUrl(domain)
		return writeDomains(domains)
	else
		return $domain_not_exists
	end
end

def updateDomain(domain,url)
	removeDomain(domain)
	return addDomain(domain,url)
end

def addDomainUrl(domain,url)
	if (getOptionFromSSConfig(domain+"=")=="Undefined")
		ssconfigText = File.read($ssconfig)
		newssconfig = ssconfigText + "\n" + domain + "=" + url + "\n"
		File.open($ssconfig, "w") { |file| file.puts newssconfig }
	end
end

def removeDomainUrl(domain)
	if (getOptionFromSSConfig(domain+"=")!="Undefined")
		ssconfigText = File.read($ssconfig)
		newssconfig = ssconfigText.gsub(/#{domain}=.*/, "")
		File.open($ssconfig, "w") { |file| file.puts newssconfig }
	end
end


#Main Thread

begin
	if (ARGV[0])
		if ((ARGV[0]=="add")&&(ARGV[1]))
			puts addDomain(ARGV[1],ARGV[2])
			exit 0
		elsif ((ARGV[0]=="remove")&&(ARGV[1]))
			puts removeDomain(ARGV[1])
			exit 0
		elsif ((ARGV[0]=="update")&&(ARGV[1]))
			puts updateDomain(ARGV[1],ARGV[2])
			exit 0
		elsif (ARGV[0]=="view")
			puts getWebDomains()
			exit 0
		end
	end
	puts("Syntax error: ./manageWebDomains add/remove/update/view domain [url]")
	exit 1
rescue => e
	puts("#{e.class.name}: #{e.message}")
    	exit 1
end