Class: Rex::Proto::SMB::SimpleClient::OpenFile

Inherits:
Object
  • Object
show all
Defined in:
lib/rex/proto/smb/simpleclient/open_file.rb

Direct Known Subclasses

OpenPipe

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(client, name, tree_id, file_id) ⇒ OpenFile


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# File 'lib/rex/proto/smb/simpleclient/open_file.rb', line 10

def initialize(client, name, tree_id, file_id)
  self.client = client
  self.name = name
  self.tree_id = tree_id
  self.file_id = file_id
  self.chunk_size = 48000
end

Instance Attribute Details

#chunk_sizeObject

Returns the value of attribute chunk_size


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# File 'lib/rex/proto/smb/simpleclient/open_file.rb', line 8

def chunk_size
  @chunk_size
end

#clientObject

Returns the value of attribute client


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# File 'lib/rex/proto/smb/simpleclient/open_file.rb', line 8

def client
  @client
end

#file_idObject

Returns the value of attribute file_id


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# File 'lib/rex/proto/smb/simpleclient/open_file.rb', line 8

def file_id
  @file_id
end

#modeObject

Returns the value of attribute mode


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# File 'lib/rex/proto/smb/simpleclient/open_file.rb', line 8

def mode
  @mode
end

#nameObject

Returns the value of attribute name


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# File 'lib/rex/proto/smb/simpleclient/open_file.rb', line 8

def name
  @name
end

#tree_idObject

Returns the value of attribute tree_id


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# File 'lib/rex/proto/smb/simpleclient/open_file.rb', line 8

def tree_id
  @tree_id
end

Instance Method Details

#<<(data) ⇒ Object


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# File 'lib/rex/proto/smb/simpleclient/open_file.rb', line 72

def << (data)
  self.write(data)
end

#closeObject

Close this open file


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# File 'lib/rex/proto/smb/simpleclient/open_file.rb', line 27

def close
  self.client.close(self.file_id, self.tree_id)
end

#deleteObject


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# File 'lib/rex/proto/smb/simpleclient/open_file.rb', line 18

def delete
  begin
    self.close
  rescue
  end
  self.client.delete(self.name, self.tree_id)
end

#read(length = nil, offset = 0) ⇒ Object

Read data from the file


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# File 'lib/rex/proto/smb/simpleclient/open_file.rb', line 32

def read(length = nil, offset = 0)
  if (length == nil)
    data = ''
    fptr = offset
    ok = self.client.read(self.file_id, fptr, self.chunk_size)
    while (ok and ok['Payload'].v['DataLenLow'] > 0)
      buff = ok.to_s.slice(
        ok['Payload'].v['DataOffset'] + 4,
        ok['Payload'].v['DataLenLow']
      )
      data << buff
      if ok['Payload'].v['Remaining'] == 0
        break
      end
      fptr += ok['Payload'].v['DataLenLow']

      begin
        ok = self.client.read(self.file_id, fptr, self.chunk_size)
      rescue XCEPT::ErrorCode => e
        case e.error_code
        when 0x00050001
          # Novell fires off an access denied error on EOF
          ok = nil
        else
          raise e
        end
      end
    end

    return data
  else
    ok = self.client.read(self.file_id, offset, length)
    data = ok.to_s.slice(
      ok['Payload'].v['DataOffset'] + 4,
      ok['Payload'].v['DataLenLow']
    )
    return data
  end
end

#write(data, offset = 0) ⇒ Object

Write data to the file


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# File 'lib/rex/proto/smb/simpleclient/open_file.rb', line 77

def write(data, offset = 0)
  # Track our offset into the remote file
  fptr = offset

  # Duplicate the data so we can use slice!
  data = data.dup

  # Take our first chunk of bytes
  chunk = data.slice!(0, self.chunk_size)

  # Keep writing data until we run out
  while (chunk.length > 0)
    ok = self.client.write(self.file_id, fptr, chunk)
    cl = ok['Payload'].v['CountLow']

    # Partial write, push the failed data back into the queue
    if (cl != chunk.length)
      data = chunk.slice(cl - 1, chunk.length - cl) + data
    end

    # Increment our painter and grab the next chunk
    fptr += cl
    chunk = data.slice!(0, self.chunk_size)
  end
end