100 lines
2.0 KiB
Ruby
Executable File
100 lines
2.0 KiB
Ruby
Executable File
#!/usr/bin/env ruby
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require "socket"
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require "fileutils"
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require "json"
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SOCKET_PATH = "/run/malpd/malpd.sock"
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def human_capacity(bytes)
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units = ["B", "KB", "MB", "GB", "TB", "PB"]
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i = 0
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size = bytes.to_f
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while size >= 1000 && i < units.length - 1
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size /= 1000
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i += 1
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end
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precision = i <= 3 ? 0 : 1
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"%g %s" % [size.round(precision), units[i]]
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end
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def drive_type(name)
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return "nvme" if name.start_with?("nvme")
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rotational = File.read("/sys/block/#{name}/queue/rotational").strip
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rotational == "1" ? "hdd" : "ssd"
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end
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def handle_info(conn)
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info = []
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Dir.glob("/sys/block/*").each do |block_path|
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name = File.basename(block_path)
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next unless name.match?(/^(sd[a-z]+|nvme\d+n\d+)$/)
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device_path = File.realpath("#{block_path}/device") rescue next
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next if device_path.include?("/usb")
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model = (File.read("#{block_path}/device/model").strip rescue "Unknown")
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bytes = File.read("#{block_path}/size").strip.to_i * 512
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info << {
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"type" => "drive",
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"drivetype" => drive_type(name),
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"model" => model,
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"capacity" => human_capacity(bytes)
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}
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end
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if conn
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conn.puts JSON.generate(info)
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else
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puts JSON.pretty_generate(info)
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end
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end
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if ARGV.include?("-t")
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handle_info(nil)
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exit
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end
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if Process.uid != 0
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$stderr.puts "malpd must be run as root"
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exit(1)
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end
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if ENV["LISTEN_FDS"]
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server = UNIXServer.for_fd(3)
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else
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FileUtils.mkdir_p(File.dirname(SOCKET_PATH))
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FileUtils.rm_f(SOCKET_PATH)
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server = UNIXServer.new(SOCKET_PATH)
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File.chmod(0660, SOCKET_PATH)
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FileUtils.chown(nil, "apache", SOCKET_PATH)
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end
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Signal.trap("TERM") { server.close }
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Signal.trap("INT") { server.close }
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loop do
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conn = server.accept
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request = conn.gets&.chomp
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begin
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case request
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when nil
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# empty request
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when "info"
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handle_info(conn)
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else
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conn.puts "unknown request: #{request}"
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end
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rescue => e
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$stderr.puts "error handling request: #{e.message}"
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ensure
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conn.close
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end
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rescue IOError
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break
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end
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