我正在尝试创建一个访问本机C ++ DLL的程序。下面是示例代码。
C ++代码
GetRmaPin (const char *rma_password, const char *serial, unsigned char *rma_pin);
C#代码
class Program
{
static void Main ( string [ ] args )
{
string[] password = { "74f3d3a287cee548c1842c07090d6a274dd0ddbd04bfd1e4694861a369bc7304" };
string[] serial = { "184393900006" };
//StringBuilder rma_pin = new StringBuilder(2048);
byte[] rma_pin = new byte[2048];
int rc = GetRmaPin(password, serial, ref rma_pin);
Console.WriteLine ( "Result: " + rc.ToString ( ) );
Console.WriteLine ( "Payload: " + rma_pin.ToString ( ) );
Console.Read ( );
}
[DllImport ( "Security.dll" , EntryPoint = "GetRmaPin" , CallingConvention = CallingConvention.Cdecl)]
public static extern int GetRmaPin (
[In][MarshalAs ( UnmanagedType.LPArray , ArraySubType = UnmanagedType.LPStr )] string [ ] password ,
[In][MarshalAs ( UnmanagedType.LPArray , ArraySubType = UnmanagedType.LPStr )] string [ ] serial ,
ref byte[] rmap_in );
}
错误消息:托管调试助手'FatalExecutionEngineError'消息=托管调试助手'FatalExecutionEngineError':'运行时遇到了致命错误。错误的地址在0x732dc93d,在线程0x97a4上。错误代码是0xc0000005。此错误可能是CLR中的错误,也可能是用户代码的不安全或不可验证部分中的错误。此错误的常见来源包括COM-interop或PInvoke的用户封送错误,这可能会破坏堆栈。
经过一些实验,我找到了从第3个参数中获取值的方法。这是更新的代码。感谢@HansPassant提示删除“ref”。希望这对将来有所帮助。
class Program
{
static void Main ( string [ ] args )
{
string[] password = { "74f3d3a287cee548c1842c07090d6a274dd0ddbd04bfd1e4694861a369bc7304" };
string[] serial = { "184393900006" };
byte[] rma_pin = new byte[32];
int rc = GetRmaPin(password, serial, rma_pin);
Console.WriteLine ( "Result: " + rc.ToString ( ) );
Console.WriteLine ( "Payload: " + BitConverter.ToString ( rma_pin ).Replace ( "-" , "" ) );
Console.Read ( );
}
[DllImport ( "SecurityProduction.dll" , EntryPoint = "GetRmaPin" , CallingConvention = CallingConvention.Cdecl)]
public static extern int GetRmaPin (
[In][MarshalAs ( UnmanagedType.LPArray , ArraySubType = UnmanagedType.LPStr )] string [ ] password ,
[In][MarshalAs ( UnmanagedType.LPArray , ArraySubType = UnmanagedType.LPStr )] string [ ] serial ,
byte[] rmap_in );
}