Class: Rmega::Nodes::File

Inherits:
Node
  • Object
show all
Includes:
Deletable
Defined in:
lib/rmega/nodes/file.rb

Instance Attribute Summary

Attributes inherited from Node

#data, #session

Instance Method Summary collapse

Methods included from Deletable

#delete, #trash

Methods inherited from Node

#attributes, #can_decrypt_attributes?, #decrypted_file_key, #file_key, #handle, #initialize, #name, #owner_key, #parent_handle, #public_handle, #public_url, #public_url=, #type

Methods included from Traversable

#children, #empty?, #files, #folders, #parent

Methods included from Loggable

included, #logger

Constructor Details

This class inherits a constructor from Rmega::Nodes::Node

Instance Method Details

#download(path) ⇒ Object 



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# File 'lib/rmega/nodes/file.rb', line 18

def download(path)
  path = ::File.expand_path(path)
  path = Dir.exists?(path) ? ::File.join(path, name) : path

  logger.info "Download #{name} (#{size} bytes) => #{path}"

  k = decrypted_file_key
  k = [k[0] ^ k[4], k[1] ^ k[5], k[2] ^ k[6], k[3] ^ k[7]]
  nonce = decrypted_file_key[4..5]

  donwloader = Downloader.new(base_url: storage_url, filesize: size, local_path: path)

  donwloader.download do |start, buffer|
    nonce = [nonce[0], nonce[1], (start/0x1000000000) >> 0, (start/0x10) >> 0]
    Crypto::AesCtr.decrypt(k, nonce, buffer)[:data]
  end

  path
end

#size ⇒ Object 



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# File 'lib/rmega/nodes/file.rb', line 14

def size
  data['s']
end

#storage_url ⇒ Object 



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# File 'lib/rmega/nodes/file.rb', line 10

def storage_url
  @storage_url ||= data['g'] || request(a: 'g', g: 1, n: handle)['g']
end