Module: Rmega::Nodes::Expandable

Included in:
Folder, Root
Defined in:
lib/rmega/nodes/expandable.rb

Instance Method Summary collapse

Instance Method Details

#create_folder(name) ⇒ Object 



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# File 'lib/rmega/nodes/expandable.rb', line 8

def create_folder(name)
  key = Crypto.random_key
  encrypted_attributes = Utils.a32_to_base64 Crypto.encrypt_attributes(key[0..3], {n: name.strip})
  encrypted_key = Utils.a32_to_base64 Crypto.encrypt_key(session.master_key, key)
  n = [{h: 'xxxxxxxx', t: 1, a: encrypted_attributes, k: encrypted_key}]
  data = session.request a: 'p', t: handle, n: n
  Folder.new(session, data['f'][0])
end

#upload(local_path) ⇒ Object 



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# File 'lib/rmega/nodes/expandable.rb', line 21

def upload(local_path)
  local_path = ::File.expand_path(local_path)
  filesize = ::File.size(local_path)

  ul_key = Crypto.random_key
  aes_key = ul_key[0..3]
  nonce = ul_key[4..5]

  file_mac = [0, 0, 0, 0]

  uploader = Uploader.new(filesize: filesize, base_url: upload_url(filesize), local_path: local_path)

  uploader.upload do |start, clean_buffer|
    # TODO: should be (chunk_start/0x1000000000) >>> 0, (chunk_start/0x10) >>> 0
    nonce = [nonce[0], nonce[1], (start/0x1000000000) >> 0, (start/0x10) >> 0]

    encrypted = Crypto::AesCtr.encrypt(aes_key, nonce, clean_buffer)
    chunk_mac = encrypted[:mac]

    file_mac = [file_mac[0] ^ chunk_mac[0], file_mac[1] ^ chunk_mac[1],
                file_mac[2] ^ chunk_mac[2], file_mac[3] ^ chunk_mac[3]]
    file_mac = Crypto::Aes.encrypt(ul_key[0..3], file_mac)

    encrypted[:data]
  end

  file_handle = uploader.last_result

  attribs = {n: ::File.basename(local_path)}
  encrypt_attribs = Utils.a32_to_base64 Crypto.encrypt_attributes(ul_key[0..3], attribs)

  meta_mac = [file_mac[0] ^ file_mac[1], file_mac[2] ^ file_mac[3]]

  key = [ul_key[0] ^ ul_key[4], ul_key[1] ^ ul_key[5], ul_key[2] ^ meta_mac[0],
         ul_key[3] ^ meta_mac[1], ul_key[4], ul_key[5], meta_mac[0], meta_mac[1]]

  encrypted_key = Utils.a32_to_base64 Crypto.encrypt_key(session.master_key, key)
  session.request a: 'p', t: handle, n: [{h: file_handle, t: 0, a: encrypt_attribs, k: encrypted_key}]

  attribs[:n]
end

#upload_url(filesize) ⇒ Object 



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# File 'lib/rmega/nodes/expandable.rb', line 17

def upload_url(filesize)
  session.request(a: 'u', s: filesize)['p']
end