Module: RubySMB::Server::Share::Provider::Disk::Processor::Query

Included in:
RubySMB::Server::Share::Provider::Disk::Processor
Defined in:
lib/ruby_smb/server/share/provider/disk/processor/query.rb

Instance Method Summary collapse

Instance Method Details

#do_query_directory_smb2(request) ⇒ Object 



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# File 'lib/ruby_smb/server/share/provider/disk/processor/query.rb', line 45

def do_query_directory_smb2(request)
  local_path = get_local_path(request.file_id)
  if local_path.nil?
    response = RubySMB::SMB2::Packet::ErrorPacket.new
    response.smb2_header.nt_status = WindowsError::NTStatus::STATUS_FILE_CLOSED
    return response
  end

  # see: https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-smb2/29dfcc9b-3aec-406b-abb5-0b4fe96712e2
  info_class = request.file_information_class.snapshot
  begin
    # probe #build_fscc_file_information to see if it supports the requested info class
    build_fscc_file_information(Pathname.new(__FILE__), info_class)
  rescue NotImplementedError
    logger.warn("Can not handle QUERY_DIRECTORY request for class: #{info_class}")
    raise
  end

  unless local_path.directory?
    response = SMB2::Packet::ErrorPacket.new
    response.smb2_header.nt_status = WindowsError::NTStatus::STATUS_INVALID_PARAMETER
    return response
  end

  search_pattern = request.name.snapshot.dup.encode
  begin
    search_regex = wildcard_to_regex(search_pattern)
  rescue NotImplementedError
    logger.warn("Can not handle QUERY_DIRECTORY wildcard pattern: #{search_pattern}")
    raise
  end

  return_single = request.flags.return_single == 1

  align = 8
  infos = []
  total_size = 0

  if @query_directory_context[request.file_id.to_binary_s].nil? || request.flags.reopen == 1 || request.flags.restart_scans == 1
    dirents = local_path.children.sort.to_a
    dirents.unshift(local_path.parent) unless local_path.parent == local_path
    dirents.unshift(local_path)
    @query_directory_context[request.file_id.to_binary_s] = dirents
  else
    dirents = @query_directory_context[request.file_id.to_binary_s]
  end

  consume_dirents(local_path, dirents, filter_regex: search_regex) do |dirent, dirent_name|
    info = build_fscc_file_information(dirent, info_class, rename: dirent_name)
    info_size = info.num_bytes + ((align - info.num_bytes % align) % align)
    if total_size + info_size > request.output_length
      dirents.unshift(dirent) # no space left for this one so put it back
      break
    end

    infos << info
    total_size += info_size
    break if return_single
  end

  if infos.length == 0
    response = SMB2::Packet::QueryDirectoryResponse.new
    response.smb2_header.nt_status = WindowsError::NTStatus::STATUS_NO_MORE_FILES
    return response
  end

  response = SMB2::Packet::QueryDirectoryResponse.new
  infos.last.next_offset = 0 if infos.last
  buffer = ""
  infos.each do |info|
    info = info.to_binary_s
    buffer << info + "\x00".b * ((align - info.length % align) % align)
  end
  response.buffer = buffer
  response
end

#do_query_info_smb2(request) ⇒ Object 



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# File 'lib/ruby_smb/server/share/provider/disk/processor/query.rb', line 122

def do_query_info_smb2(request)
  local_path = get_local_path(request.file_id)
  if local_path.nil?
    response = RubySMB::SMB2::Packet::ErrorPacket.new
    response.smb2_header.nt_status = WindowsError::NTStatus::STATUS_FILE_CLOSED
    return response
  end

  case request.info_type
  when SMB2::SMB2_INFO_FILE
    info = query_info_smb2_file(request, local_path)
  when SMB2::SMB2_INFO_FILESYSTEM
    info = query_info_smb2_filesystem(request, local_path)
  else
    logger.warn("Can not handle QUERY_INFO request for type: #{request.info_type}, class: #{request.file_information_class}")
    raise NotImplementedError
  end

  response = SMB2::Packet::QueryInfoResponse.new
  response.buffer = info.to_binary_s
  response
end

#do_transactions2_smb1(request) ⇒ Object 



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# File 'lib/ruby_smb/server/share/provider/disk/processor/query.rb', line 10

def do_transactions2_smb1(request)
  # can't find an example where more than one setup is set, this code makes alot of assumptions that there
  # are exactly 0 or 1 entries
  if request.parameter_block.setup.length > 1
    raise NotImplementedError, 'There are more than 1 TRANSACTION2 setup values'
  end

  case request.data_block.trans2_parameters
  when SMB1::Packet::Trans2::FindFirst2RequestTrans2Parameters
    response = transaction2_smb1_find_first2(request)
  when SMB1::Packet::Trans2::QueryFileInformationRequestTrans2Parameters
    response = transaction2_smb1_query_file_information(request)
  when SMB1::Packet::Trans2::QueryPathInformationRequestTrans2Parameters
    response = transaction2_smb1_query_path_information(request)
  when SMB1::Packet::Trans2::QueryFsInformationRequestTrans2Parameters
    response = transaction2_smb1_query_fs_information(request)
  else
    subcommand = request.parameter_block.setup.first
    if subcommand
      logger.warn("Can not handle TRANSACTION2 request for subcommand #{subcommand} (#{SMB1::Packet::Trans2::Subcommands.name(subcommand)})")
    else
      logger.warn('Can not handle TRANSACTION2 request with missing subcommand')
    end
    raise NotImplementedError
  end

  if response and response.parameter_block.is_a?(RubySMB::SMB1::Packet::Trans2::Response::ParameterBlock)
    response.parameter_block.setup = []
    response.parameter_block.total_parameter_count = response.parameter_block.parameter_count = response.data_block.trans2_parameters.num_bytes
    response.parameter_block.total_data_count = response.parameter_block.data_count = response.data_block.trans2_data.num_bytes
  end

  response
end