/// <summary>
/// Gets the specific firmware table
/// </summary>
/// <param name="provider">The Firmware table provider</param>
/// <param name="table">The firmware table integer identifier</param>
/// <returns>The firmware table as a byte array</returns>
internal static byte[] GetSystemFirmwareTable(NativeMethods.FirmwareTableProviderSignature provider, int table)
{
int systemFirmwareTable = NativeMethods.GetSystemFirmwareTable(provider, table, IntPtr.Zero, 0);
if (systemFirmwareTable <= 0)
{
throw new ExternalException($"There was an error obtaining the firmware table '{table}' from {provider}.", Marshal.GetLastWin32Error());
}
IntPtr intPtr = Marshal.AllocHGlobal(systemFirmwareTable);
try
{
NativeMethods.GetSystemFirmwareTable(provider, table, intPtr, systemFirmwareTable);
byte[] array = null;
if (Marshal.GetLastWin32Error() == 0)
{
array = new byte[systemFirmwareTable];
Marshal.Copy(intPtr, array, 0, systemFirmwareTable);
}
return(array);
}
finally
{
Marshal.FreeHGlobal(intPtr);
}
}
/// <summary>
/// Enumerates all system firmware tables from the specified firmware table provider
/// </summary>
/// <param name="provider">The Firmware table provider</param>
/// <returns>The table names</returns>
internal static string[] EnumSystemFirmwareTables(NativeMethods.FirmwareTableProviderSignature provider)
{
int num = NativeMethods.EnumSystemFirmwareTables(provider, IntPtr.Zero, 0);
if (num <= 0)
{
throw new ExternalException($"There was an error enumerating the firmware tables from {provider}.", Marshal.GetLastWin32Error());
}
byte[] array = new byte[num];
IntPtr intPtr = Marshal.AllocHGlobal(num);
try
{
NativeMethods.EnumSystemFirmwareTables(provider, intPtr, num);
Marshal.Copy(intPtr, array, 0, num);
}
finally
{
Marshal.FreeHGlobal(intPtr);
}
string[] array2 = new string[num / 4];
for (int i = 0; i < array2.Length; i++)
{
array2[i] = Encoding.ASCII.GetString(array, 4 * i, 4);
}
return(array2);
}
/// <summary>
/// Gets the specific firmware table
/// </summary>
/// <param name="provider">The Firmware table provider</param>
/// <param name="table">The Firmware table name</param>
/// <returns>The firmware table as a byte array</returns>
internal static byte[] GetSystemFirmwareTable(NativeMethods.FirmwareTableProviderSignature provider, string table)
{
if (table.Length != 4 || table.Any((char c) => c > '\u007f'))
{
throw new ArgumentException("Table names must consist of 4 Ascii charactors", "table");
}
int table2 = (int)(((uint)table[3] << 24) | ((uint)table[2] << 16) | ((uint)table[1] << 8) | table[0]);
return(GetSystemFirmwareTable(provider, table2));
}
