Class: Rex::MIME::Message

Inherits:
Object
  • Object
show all
Includes:
Encoding
Defined in:
lib/rex/mime/message.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Encoding

#force_crlf

Constructor Details

#initialize(data = nil) ⇒ Message

Returns a new instance of Message.



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# File 'lib/rex/mime/message.rb', line 16

def initialize(data=nil)
  self.header = Rex::MIME::Header.new
  self.parts  = []
  self.bound  = "_Part_#{rand(1024)}_#{rand(0xffffffff)}_#{rand(0xffffffff)}"
  self.content = ''
  if data
    head,body = data.split(/\r?\n\r?\n/, 2)

    self.header.parse(head)
    ctype = self.header.find('Content-Type')

    if ctype && ctype[1] && ctype[1] =~ /multipart\/mixed;\s*boundary="?([A-Za-z0-9'\(\)\+\_,\-\.\/:=\?^\s]+)"?/
      self.bound = $1
      chunks = body.to_s.split(/--#{self.bound}(--)?\r?\n/)
      self.content = chunks.shift.to_s.gsub(/\s+$/, '')
      self.content << "\r\n" unless self.content.empty?

      chunks.each do |chunk|
        break if chunk == "--"
        head,body = chunk.split(/\r?\n\r?\n/, 2)
        part = Rex::MIME::Part.new
        part.header.parse(head)
        part.content = body.gsub(/\s+$/, '')
        self.parts << part
      end
    else
      self.content = body.to_s.gsub(/\s+$/, '') + "\r\n"
    end
  end
end

Instance Attribute Details

#bound ⇒ Object

Returns the value of attribute bound.



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# File 'lib/rex/mime/message.rb', line 13

def bound
  @bound
end

#content ⇒ Object

Returns the value of attribute content.



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# File 'lib/rex/mime/message.rb', line 13

def content
  @content
end

#header ⇒ Object

Returns the value of attribute header.



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# File 'lib/rex/mime/message.rb', line 13

def header
  @header
end

#parts ⇒ Object

Returns the value of attribute parts.



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# File 'lib/rex/mime/message.rb', line 13

def parts
  @parts
end

Instance Method Details

#add_part(data = '', content_type = 'text/plain', transfer_encoding = "8bit", content_disposition = nil) ⇒ Object 



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# File 'lib/rex/mime/message.rb', line 88

def add_part(data='', content_type='text/plain', transfer_encoding="8bit", content_disposition=nil)
  part = Rex::MIME::Part.new

  if content_disposition
    part.header.set("Content-Disposition", content_disposition)
  end

  part.header.set("Content-Type", content_type) if content_type

  if transfer_encoding
    part.header.set("Content-Transfer-Encoding", transfer_encoding)
  end

  part.content = data
  self.parts << part
  part
end

#add_part_attachment(data, name) ⇒ Object 



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# File 'lib/rex/mime/message.rb', line 106

def add_part_attachment(data, name)
  self.add_part(
    Rex::Text.encode_base64(data, "\r\n"),
    "application/octet-stream; name=\"#{name}\"",
    "base64",
    "attachment; filename=\"#{name}\""
  )
end

#add_part_inline_attachment(data, name) ⇒ Object 



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# File 'lib/rex/mime/message.rb', line 116

def add_part_inline_attachment(data, name)
  self.add_part(
    Rex::Text.encode_base64(data, "\r\n"),
    "application/octet-stream; name=\"#{name}\"",
    "base64",
    "inline; filename=\"#{name}\""
  )
end

#from ⇒ Object 



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# File 'lib/rex/mime/message.rb', line 59

def from
  (self.header.find('From') || [nil, nil])[1]
end

#from=(val) ⇒ Object 



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# File 'lib/rex/mime/message.rb', line 55

def from=(val)
  self.header.set("From", val)
end

#mime_defaults ⇒ Object 



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# File 'lib/rex/mime/message.rb', line 71

def mime_defaults
  self.header.set("MIME-Version", "1.0")
  self.header.set("Content-Type", "multipart/mixed; boundary=\"#{self.bound}\"")
  self.header.set("Subject", '') # placeholder
  self.header.set("Date", Time.now.strftime("%a,%e %b %Y %H:%M:%S %z"))
  self.header.set("Message-ID",
    "<"+
    Rex::Text.rand_text_alphanumeric(rand(20)+40)+
    "@"+
    Rex::Text.rand_text_alpha(rand(20)+3)+
    ">"
  )
  self.header.set("From", '')    # placeholder
  self.header.set("To", '')      # placeholder
end

#subject ⇒ Object 



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# File 'lib/rex/mime/message.rb', line 67

def subject
  (self.header.find('Subject') || [nil, nil])[1]
end

#subject=(val) ⇒ Object 



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# File 'lib/rex/mime/message.rb', line 63

def subject=(val)
  self.header.set("Subject", val)
end

#to ⇒ Object 



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# File 'lib/rex/mime/message.rb', line 47

def to
  (self.header.find('To') || [nil, nil])[1]
end

#to=(val) ⇒ Object 



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# File 'lib/rex/mime/message.rb', line 51

def to=(val)
  self.header.set("To", val)
end

#to_s ⇒ Object 



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# File 'lib/rex/mime/message.rb', line 125

def to_s
  header_string = self.header.to_s

  msg = header_string.empty? ? '' : force_crlf(self.header.to_s + "\r\n")
  msg << force_crlf(self.content + "\r\n") unless self.content.to_s.empty?

  self.parts.each do |part|
    msg << force_crlf("--" + self.bound + "\r\n")
    msg << part.to_s
  end

  msg << force_crlf("--" + self.bound + "--\r\n") if self.parts.length > 0

  msg
end