Module: Firecracker

Defined in:
lib/firecracker.rb,
lib/firecracker/base.rb,
lib/firecracker/version.rb,
lib/firecracker/tcp_scraper.rb,
lib/firecracker/udp_scraper.rb

Defined Under Namespace

Classes: Base, TCPScraper, UDPScraper

Constant Summary collapse

VERSION = 
"1.0.2"

Class Method Summary collapse

Class Method Details

.calculate(torrent, protocols = [:udp, :tcp]) ⇒ Object

Returns Hash Seeders, leechers and the amounts of downloads.

Returns:

  • Hash Seeders, leechers and the amounts of downloads



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# File 'lib/firecracker.rb', line 31

def self.calculate(torrent, protocols = [:udp, :tcp])    
  raise "At least one protocol needs to be passed" if protocols.empty?
  
  # UDP related trackers
  if protocols.include?(:udp)
    trackers = udp_trackers(torrent)      
    udp_results = trackers.map do |tracker|
      begin
        Firecracker::UDPScraper.new({
          tracker: tracker,
          hashes: [hash(torrent)]
        }).process!
      rescue
        # raise $! unless silent
      end
    end.reject(&:nil?).map(&:values).flatten
  end
  
  # TCP related trackers
  if protocols.include?(:tcp)
    trackers = tcp_trackers(torrent)
    tcp_results = trackers.map do |tracker|
      begin
        Firecracker::TCPScraper.new({
          tracker: tracker,
          hashes: [hash(torrent)]
        }).process!
      rescue
        # raise $! unless silent
      end
    end.reject(&:nil?).map(&:values).flatten
  end

  (tcp_results + udp_results).inject{ |memo, el| memo.merge(el){ |k, old_v, new_v| old_v + new_v } }
end

.hash(torrent) ⇒ Object

wiki.theory.org/BitTorrent_Tracker_Protocol

Returns:

  • String An info_hash. Read more about it here:



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# File 'lib/firecracker.rb', line 105

def self.hash(torrent)
  Digest::SHA1.hexdigest(torrent["info"].bencode)
end

.load(torrent, protocols = [:udp, :tcp]) ⇒ Object

Returns Hash Seeders, leechers and the amounts of downloads.

Returns:

  • Hash Seeders, leechers and the amounts of downloads



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# File 'lib/firecracker.rb', line 13

def self.load(torrent, protocols = [:udp, :tcp])
  Firecracker.raw(File.read(torrent))
end

.raw(raw, protocols = [:udp, :tcp]) ⇒ Object

Returns Hash Seeders, leechers and the amounts of downloads.

Returns:

  • Hash Seeders, leechers and the amounts of downloads



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# File 'lib/firecracker.rb', line 22

def self.raw(raw, protocols = [:udp, :tcp])
  Firecracker.calculate(raw.bdecode)
end

.tcp_trackers(torrent) ⇒ Object 



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# File 'lib/firecracker.rb', line 87

def self.tcp_trackers(torrent)
  announce      = torrent["announce"]
  announce_list = torrent["announce-list"]
      
  trackers = announce_list.flatten.select{|tracker| tracker.match(/^http:\/\//)}
  if announce.match(/^http:\/\//)
    trackers << announce
  end
  
  # TPBs tracker is no longer active
  return trackers.map{|t| t.gsub(/announce/, "scrape")}.reject{|t| t.match(%r{thepiratebay})}
end

.udp_trackers(torrent) ⇒ Object 



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# File 'lib/firecracker.rb', line 71

def self.udp_trackers(torrent)
  announce      = torrent["announce"]
  announce_list = torrent["announce-list"]
      
  trackers = announce_list.flatten.select{|tracker| tracker.match(/^udp:\/\//)}
  if announce.match(/^udp:\/\//)
    trackers << announce
  end
  
  return trackers
end