95 lines
2.7 KiB
C#
95 lines
2.7 KiB
C#
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
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// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// Copyright (C) LibreHardwareMonitor and Contributors.
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// Partial Copyright (C) Michael Möller <mmoeller@openhardwaremonitor.org> and Contributors.
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// All Rights Reserved.
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using System;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace LibreHardwareMonitor.Hardware;
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internal static class FirmwareTable
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{
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public static byte[] GetTable(Interop.Kernel32.Provider provider, string table)
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{
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int id = table[3] << 24 | table[2] << 16 | table[1] << 8 | table[0];
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return GetTable(provider, id);
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}
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public static byte[] GetTable(Interop.Kernel32.Provider provider, int table)
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{
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int size;
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try
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{
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size = Interop.Kernel32.GetSystemFirmwareTable(provider, table, IntPtr.Zero, 0);
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}
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catch (Exception e) when (e is DllNotFoundException or EntryPointNotFoundException)
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{
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return null;
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}
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if (size <= 0)
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return null;
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IntPtr allocatedBuffer = IntPtr.Zero;
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try
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{
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allocatedBuffer = Marshal.AllocHGlobal(size);
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Interop.Kernel32.GetSystemFirmwareTable(provider, table, allocatedBuffer, size);
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if (Marshal.GetLastWin32Error() != 0)
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return null;
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byte[] buffer = new byte[size];
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Marshal.Copy(allocatedBuffer, buffer, 0, size);
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return buffer;
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}
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finally
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{
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if (allocatedBuffer != IntPtr.Zero)
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Marshal.FreeHGlobal(allocatedBuffer);
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}
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}
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public static string[] EnumerateTables(Interop.Kernel32.Provider provider)
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{
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int size;
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try
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{
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size = Interop.Kernel32.EnumSystemFirmwareTables(provider, IntPtr.Zero, 0);
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}
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catch (Exception e) when (e is DllNotFoundException or EntryPointNotFoundException)
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{
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return null;
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}
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IntPtr allocatedBuffer = IntPtr.Zero;
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try
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{
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allocatedBuffer = Marshal.AllocHGlobal(size);
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Interop.Kernel32.EnumSystemFirmwareTables(provider, allocatedBuffer, size);
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byte[] buffer = new byte[size];
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Marshal.Copy(allocatedBuffer, buffer, 0, size);
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string[] result = new string[size / 4];
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for (int i = 0; i < result.Length; i++)
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result[i] = Encoding.ASCII.GetString(buffer, 4 * i, 4);
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return result;
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}
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finally
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{
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if (allocatedBuffer != IntPtr.Zero)
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Marshal.FreeHGlobal(allocatedBuffer);
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}
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}
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} |