OpenHardwareMonitor: Hardware/FirmwareTable.cs@ed5d5fc482ed

     1 /*

     3   This Source Code Form is subject to the terms of the Mozilla Public

     4   License, v. 2.0. If a copy of the MPL was not distributed with this

     5   file, You can obtain one at http://mozilla.org/MPL/2.0/.

     7   Copyright (C) 2011 Michael Möller <mmoeller@openhardwaremonitor.org>

     9 */

    11 using System;

    12 using System.ComponentModel;

    13 using System.Runtime.InteropServices;

    14 using System.Text;

    16 namespace OpenHardwareMonitor.Hardware {

    18   internal static class FirmwareTable {

    20     public static byte[] GetTable(Provider provider, string table) {

    21       int id = table[3] << 24 | table[2] << 16 | table[1] << 8 | table[0];

    22       return GetTable(provider, id);

    23     }

    25     public static byte[] GetTable(Provider provider, int table) {

    27       int size;

    28       try {

    29         size = NativeMethods.GetSystemFirmwareTable(provider, table,

    30           IntPtr.Zero, 0);

    31       } catch (DllNotFoundException) { return null; }

    32         catch (EntryPointNotFoundException) { return null; }

    34       if (size <= 0)

    35         return null;

    37       IntPtr nativeBuffer = Marshal.AllocHGlobal(size);

    38       NativeMethods.GetSystemFirmwareTable(provider, table, nativeBuffer, size);

    40       if (Marshal.GetLastWin32Error() != 0)

    41         return null;

    43       byte[] buffer = new byte[size];

    44       Marshal.Copy(nativeBuffer, buffer, 0, size);

    45       Marshal.FreeHGlobal(nativeBuffer);

    47       return buffer;

    48     }

    50     public static string[] EnumerateTables(Provider provider) {

    51       int size;

    52       try {

    53         size = NativeMethods.EnumSystemFirmwareTables(

    54           provider, IntPtr.Zero, 0);

    55       } catch (DllNotFoundException) { return null; }

    56         catch (EntryPointNotFoundException) { return null; }

    58       IntPtr nativeBuffer = Marshal.AllocHGlobal(size);

    59       NativeMethods.EnumSystemFirmwareTables(

    60         provider, nativeBuffer, size);

    61       byte[] buffer = new byte[size];

    62       Marshal.Copy(nativeBuffer, buffer, 0, size);

    63       Marshal.FreeHGlobal(nativeBuffer);

    65       string[] result = new string[size / 4];

    66       for (int i = 0; i < result.Length; i++)

    67         result[i] = Encoding.ASCII.GetString(buffer, 4 * i, 4);

    69       return result;

    70     }

    72     public enum Provider : int {

    73       ACPI = (byte)'A' << 24 | (byte)'C' << 16 | (byte)'P' << 8 | (byte)'I',

    74       FIRM = (byte)'F' << 24 | (byte)'I' << 16 | (byte)'R' << 8 | (byte)'M',

    75       RSMB = (byte)'R' << 24 | (byte)'S' << 16 | (byte)'M' << 8 | (byte)'B'

    76     }

    78     private static class NativeMethods {

    79       private const string KERNEL = "kernel32.dll";

    81       [DllImport(KERNEL, CallingConvention = CallingConvention.Winapi,

    82         SetLastError = true)]

    83       public static extern int EnumSystemFirmwareTables(

    84         Provider firmwareTableProviderSignature,

    85         IntPtr firmwareTableBuffer, int bufferSize);

    87       [DllImport(KERNEL, CallingConvention = CallingConvention.Winapi,

    88         SetLastError = true)]

    89       public static extern int GetSystemFirmwareTable(

    90         Provider firmwareTableProviderSignature,

    91         int firmwareTableID, IntPtr firmwareTableBuffer, int bufferSize);

    92     }

    93   }

    94 }

author	moel.mich
	Mon, 01 Oct 2012 17:10:09 +0000
changeset 381	ed5d5fc482ed
parent 308	d882720734bf
permissions	-rw-r--r--