EventMachine::DNSBL

EventMachine::DNSBL::Client queries DNS Blacklists for listings. EventMachine::DNSBL::Server provides a simple way of creating a DNSBL server

Installation

Add this line to your application's Gemfile:

gem 'eventmachine-dnsbl'

And then execute:

$ bundle

Or install it yourself as:

$ gem install eventmachine-dnsbl

Usage

Client

item = "78.12.11.91"
EM.run do
  EventMachine::DNSBL::Client.check(item) do |results|
    pp results
    EM.stop
  end
end

Server

To run a server, first create a "zone holder"

memzone = EventMachine::DNSBL::Zone::MemoryZone.new

or

sqlite3zone = EventMachine::DNSBL::Zone::Sqlite3Zone.new("test/test.sqlite3")

Then add answers, e.g.,

memzone.add_dnsblresource(
  EventMachine::DNSBL::Zone::DNSBLResourceRecord.new(
    "example.com", 
    /viagra/i, 
    300, 
    Resolv::DNS::Resource::IN::A.new("127.0.0.2"),
    Time.now.to_i + 3600
  )
)
memzone.add_dnsblresource(
  EventMachine::DNSBL::Zone::DNSBLResourceRecord.new(
    "example.com", # domain name for zone
    /pillz/i,      # regex for the label
    300,           # TTL
    Resolv::DNS::Resource::IN::A.new("127.0.0.3"), # Answer to return
    Time.now.to_i + 3600 # valid until expiry
  )
)

Then start the server

EM.run {
  EM::open_datagram_socket "0.0.0.0", 53, EventMachine::DNSBL::Server, memzone
}

Contributing

1. Fork it ( https://github.com/[my-github-username]/eventmachine-dnsbl/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request