1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/Hardware/FirmwareTable.cs Thu Jul 07 20:41:09 2011 +0000
1.3 @@ -0,0 +1,121 @@
1.4 +/*
1.5 +
1.6 + Version: MPL 1.1/GPL 2.0/LGPL 2.1
1.7 +
1.8 + The contents of this file are subject to the Mozilla Public License Version
1.9 + 1.1 (the "License"); you may not use this file except in compliance with
1.10 + the License. You may obtain a copy of the License at
1.11 +
1.12 + http://www.mozilla.org/MPL/
1.13 +
1.14 + Software distributed under the License is distributed on an "AS IS" basis,
1.15 + WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
1.16 + for the specific language governing rights and limitations under the License.
1.17 +
1.18 + The Original Code is the Open Hardware Monitor code.
1.19 +
1.20 + The Initial Developer of the Original Code is
1.21 + Michael Möller <m.moeller@gmx.ch>.
1.22 + Portions created by the Initial Developer are Copyright (C) 2011
1.23 + the Initial Developer. All Rights Reserved.
1.24 +
1.25 + Contributor(s):
1.26 +
1.27 + Alternatively, the contents of this file may be used under the terms of
1.28 + either the GNU General Public License Version 2 or later (the "GPL"), or
1.29 + the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
1.30 + in which case the provisions of the GPL or the LGPL are applicable instead
1.31 + of those above. If you wish to allow use of your version of this file only
1.32 + under the terms of either the GPL or the LGPL, and not to allow others to
1.33 + use your version of this file under the terms of the MPL, indicate your
1.34 + decision by deleting the provisions above and replace them with the notice
1.35 + and other provisions required by the GPL or the LGPL. If you do not delete
1.36 + the provisions above, a recipient may use your version of this file under
1.37 + the terms of any one of the MPL, the GPL or the LGPL.
1.38 +
1.39 +*/
1.40 +
1.41 +using System;
1.42 +using System.ComponentModel;
1.43 +using System.Runtime.InteropServices;
1.44 +using System.Text;
1.45 +
1.46 +namespace OpenHardwareMonitor.Hardware {
1.47 +
1.48 + internal static class FirmwareTable {
1.49 +
1.50 + public static byte[] GetTable(Provider provider, string table) {
1.51 + int id = table[3] << 24 | table[2] << 16 | table[1] << 8 | table[0];
1.52 + return GetTable(provider, id);
1.53 + }
1.54 +
1.55 + public static byte[] GetTable(Provider provider, int table) {
1.56 +
1.57 + int size;
1.58 + try {
1.59 + size = NativeMethods.GetSystemFirmwareTable(provider, table,
1.60 + IntPtr.Zero, 0);
1.61 + } catch (DllNotFoundException) { return null; }
1.62 + catch (EntryPointNotFoundException) { return null; }
1.63 +
1.64 + if (size <= 0)
1.65 + return null;
1.66 +
1.67 + IntPtr nativeBuffer = Marshal.AllocHGlobal(size);
1.68 + NativeMethods.GetSystemFirmwareTable(provider, table, nativeBuffer, size);
1.69 +
1.70 + if (Marshal.GetLastWin32Error() != 0)
1.71 + return null;
1.72 +
1.73 + byte[] buffer = new byte[size];
1.74 + Marshal.Copy(nativeBuffer, buffer, 0, size);
1.75 + Marshal.FreeHGlobal(nativeBuffer);
1.76 +
1.77 + return buffer;
1.78 + }
1.79 +
1.80 + public static string[] EnumerateTables(Provider provider) {
1.81 + int size;
1.82 + try {
1.83 + size = NativeMethods.EnumSystemFirmwareTables(
1.84 + provider, IntPtr.Zero, 0);
1.85 + } catch (DllNotFoundException) { return null; }
1.86 + catch (EntryPointNotFoundException) { return null; }
1.87 +
1.88 + IntPtr nativeBuffer = Marshal.AllocHGlobal(size);
1.89 + NativeMethods.EnumSystemFirmwareTables(
1.90 + provider, nativeBuffer, size);
1.91 + byte[] buffer = new byte[size];
1.92 + Marshal.Copy(nativeBuffer, buffer, 0, size);
1.93 + Marshal.FreeHGlobal(nativeBuffer);
1.94 +
1.95 + string[] result = new string[size / 4];
1.96 + for (int i = 0; i < result.Length; i++)
1.97 + result[i] = Encoding.ASCII.GetString(buffer, 4 * i, 4);
1.98 +
1.99 + return result;
1.100 + }
1.101 +
1.102 + public enum Provider : int {
1.103 + ACPI = (byte)'A' << 24 | (byte)'C' << 16 | (byte)'P' << 8 | (byte)'I',
1.104 + FIRM = (byte)'F' << 24 | (byte)'I' << 16 | (byte)'R' << 8 | (byte)'M',
1.105 + RSMB = (byte)'R' << 24 | (byte)'S' << 16 | (byte)'M' << 8 | (byte)'B'
1.106 + }
1.107 +
1.108 + private static class NativeMethods {
1.109 + private const string KERNEL = "kernel32.dll";
1.110 +
1.111 + [DllImport(KERNEL, CallingConvention = CallingConvention.Winapi,
1.112 + SetLastError = true)]
1.113 + public static extern int EnumSystemFirmwareTables(
1.114 + Provider firmwareTableProviderSignature,
1.115 + IntPtr firmwareTableBuffer, int bufferSize);
1.116 +
1.117 + [DllImport(KERNEL, CallingConvention = CallingConvention.Winapi,
1.118 + SetLastError = true)]
1.119 + public static extern int GetSystemFirmwareTable(
1.120 + Provider firmwareTableProviderSignature,
1.121 + int firmwareTableID, IntPtr firmwareTableBuffer, int bufferSize);
1.122 + }
1.123 + }
1.124 +}