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# -*- coding: binary -*-
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###
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#
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# An author of a piece of code in either the framework, a module, a script,
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# or something entirely unrelated.
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#
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###
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class Msf::Author
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  #
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  # Constants
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  #
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  # A hash that maps known author names to email addresses
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  KNOWN = {
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    'amaloteaux'          => 'alex_maloteaux' + 0x40.chr + 'metasploit.com',
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    'aushack'             => 'patrick' + 0x40.chr + 'osisecurity.com.au',
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    'bannedit'            => 'bannedit' + 0x40.chr + 'metasploit.com',
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    'bcoles'              => 'bcoles' + 0x40.chr + 'gmail.com',
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    'Carlos Perez'        => 'carlos_perez' + 0x40.chr + 'darkoperator.com',
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    'cazz'                => 'bmc' + 0x40.chr + 'shmoo.com',
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    'CG'                  => 'cg' + 0x40.chr + 'carnal0wnage.com',
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    'ddz'                 => 'ddz' + 0x40.chr + 'theta44.org',
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    'egypt'               => 'egypt' + 0x40.chr + 'metasploit.com',
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    'et'                  => 'et' + 0x40.chr + 'metasploit.com',
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    'Christian Mehlmauer' => 'FireFart' + 0x40.chr + 'gmail.com',
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    'hdm'                 => 'x' + 0x40.chr + 'hdm.io',
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    'I)ruid'              => 'druid' +  0x40.chr + 'caughq.org',
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    'jcran'               => 'jcran' + 0x40.chr + 'metasploit.com',
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    'jduck'               => 'jduck' + 0x40.chr + 'metasploit.com',
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    'joev'                => 'joev' + 0x40.chr + 'metasploit.com',
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    'juan vazquez'        => 'juan.vazquez' + 0x40.chr + 'metasploit.com',
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    'kf'                  => 'kf_list' + 0x40.chr + 'digitalmunition.com',
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    'kris katterjohn'     => 'katterjohn' + 0x40.chr + 'gmail.com',
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    'MC'                  => 'mc' + 0x40.chr + 'metasploit.com',
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    'Ben Campbell'        => 'eat_meatballs' + 0x40.chr + 'hotmail.co.uk',
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    'msmith'              => 'msmith' + 0x40.chr + 'metasploit.com',
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    'mubix'               => 'mubix' + 0x40.chr + 'hak5.org',
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    'natron'              => 'natron' + 0x40.chr + 'metasploit.com',
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    'optyx'               => 'optyx' + 0x40.chr + 'no$email.com',
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    'pusscat'             => 'pusscat' + 0x40.chr + 'metasploit.com',
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    'Ramon de C Valle'    => 'rcvalle' + 0x40.chr + 'metasploit.com',
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    'sf'                  => 'stephen_fewer' + 0x40.chr + 'harmonysecurity.com',
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    'sinn3r'              => 'sinn3r' + 0x40.chr + 'metasploit.com',
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    'skape'               => 'mmiller' + 0x40.chr + 'hick.org',
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    'skylined'            => 'skylined' + 0x40.chr + 'edup.tudelft.nl',
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    'spoonm'              => 'spoonm' + 0x40.chr + 'no$email.com',
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    'stinko'              => 'vinnie' + 0x40.chr + 'metasploit.com',
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    'theLightCosine'      => 'theLightCosine' + 0x40.chr + 'metasploit.com',
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    'todb'                => 'todb' + 0x40.chr + 'metasploit.com',
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    'vlad902'             => 'vlad902' + 0x40.chr + 'gmail.com',
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    'wvu'                 => 'wvu' + 0x40.chr + 'metasploit.com',
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    'zeroSteiner'         => 'zeroSteiner' + 0x40.chr + 'gmail.com'
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  }
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  #
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  # Class Methods
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  #
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  # Parses an {Author} instance from the specified string.
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  #
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  # @param str [String] the String to parse an Author instance from
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  # @return [Author] a valid {Author} instance
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  # @return nil if `str` is not the correct format
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  def self.from_s(str)
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    instance = self.new
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    # If the serialization fails...
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    if instance.from_s(str) == true
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      instance
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    else
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      nil
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    end
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  end
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  # Normalizes a single {Author} reference or an Array of {Author} references
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  # to an Array of {Author} references.
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  #
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  # @param src [Author, Array<Author>] a single {Author} or an Array of {Author} instances
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  # @return [Array<Author>] an Array of {Author} instances
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  def self.transform(src)
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    Rex::Transformer.transform(src, Array, [ self ], 'Author')
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  end
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  # Constructs an {Author} from a given `name` and `email`
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  #
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  # @param name [String] the author's name
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  # @param email [String] the author's email
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  def initialize(name = nil, email = nil)
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    self.name  = name
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    self.email = email || KNOWN[name]
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  end
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  #
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  # Instance Attributes
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  #
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  # @!attribute email
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  #   An optional email associated with this {Author}.
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  #
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  #   @return [String, nil]
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  attr_accessor :email
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  # @!attribute name
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  #   The name associated with this {Author}.
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  #
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  #   @return [String]
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  attr_reader   :name
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  #
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  # Instance Methods
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  #
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  # @return [Boolean] whether the {Author} instances are equal
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  def ==(tgt)
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    tgt.to_s == to_s
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  end
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  # Serialize the {Author} instance to a string of the form `name` or `name <[email protected]>`
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  #
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  # @return [String] serialized {Author}
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  def to_s
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    str = "#{name}"
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    if (email and not email.empty?)
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      str += " <#{email}>"
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    end
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    str
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  end
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  # Parses {Author} details from the supplied string which may
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  # be of the form `name` or `name <[email protected]>`
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  #
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  # @param str [String] the String to parse from
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  # @return [Boolean] the translation succeeded
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  def from_s(str)
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    # Supported formats:
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    #   known_name
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    #   user [at/@] host [dot/.] tld
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    #   Name <user [at/@] host [dot/.] tld>
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    if str.present?
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      if ((m = str.match(/^\s*([^<]+)<([^>]+)>\s*$/)))
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        self.name  = m[1].sub(/<.*/, '')
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        self.email = m[2].sub(/\s*\[at\]\s*/, '@').sub(/\s*\[dot\]\s*/, '.')
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      else
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        if (KNOWN[str])
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          self.email = KNOWN[str]
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          self.name  = str
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        else
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          self.email = str.sub(/\s*\[at\]\s*/, '@').sub(/\s*\[dot\]\s*/, '.').gsub(/^<|>$/, '')
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          m = self.email.match(/([^@]+)@/)
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          self.name = m ? m[1] : nil
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          if !(self.email and self.email.index('@'))
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            self.name  = self.email
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            self.email = ''
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          end
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        end
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      end
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    end
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    self.name.strip! if self.name.present?
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    # The parse succeeds only when a name is found
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    self.name.present?
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  end
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  # Sets the name of the author and updates the email if it's a known author.
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  # @param name [String] the name to set
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  def name=(name)
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    if KNOWN.has_key?(name)
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      self.email = KNOWN[name]
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    end
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    @name = name
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  end
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end
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