Ok i have found the problem:] The solution was to move the whole conditional
if(Id == "pkcs11" {..} to the end of the function and now all is working
properly.
BR
Piotr Lobacz
________________________________
Od: openssl-users <openssl-users-boun...@openssl.org> w imieniu użytkownika
Piotr Lobacz <piotr.lob...@softgent.com>
Wysłane: środa, 26 maja 2021 15:24
Do: openssl-users@openssl.org <openssl-users@openssl.org>
Temat: dynamic engine load
Hi all,
I am trying to write a function which will load dynamic engine for pkcs11. What
i intendt to do is not to use engine id pkcs11 but dynamic. The problem is that
i get an error for ENGINE_ctrl_cmd_string with MODULE_PATH parameter. My
function currently looks like this:
public void Initialize()
{
if (null == engine)
{
engine = SafeNativeMethods.ENGINE_by_id("dynamic");
if (engine.IsInvalid)
{
throw new InvalidOperationException($"Unable to load
dynamic engine");
}
if (!File.Exists(EnginePath))
{
throw new InvalidOperationException($"Unable to find engine
library path");
}
if (1 != SafeNativeMethods.ENGINE_ctrl_cmd_string(engine,
"SO_PATH", EnginePath, 0))
{
throw new InvalidOperationException("dynamic: setting
so_path <= '{EnginePath}'");
}
if (1 != SafeNativeMethods.ENGINE_ctrl_cmd_string(engine, "ID",
Id, 0))
{
throw new InvalidOperationException("dynamic: setting
engine id <= '{id}'");
}
if(Id == "pkcs11")
{
if(!File.Exists(ModulePath))
{
throw new InvalidOperationException($"Unable to load
pkcs11 module path");
}
if(1 != SafeNativeMethods.ENGINE_ctrl_cmd_string(engine,
"MODULE_PATH", ModulePath, 0))
{
throw new InvalidOperationException("dynamic: setting
module_path <= '{ModulePath}'");
}
}
if (1 != SafeNativeMethods.ENGINE_ctrl_cmd(engine, "LIST_ADD",
1, IntPtr.Zero, null, 0))
{
throw new InvalidOperationException( "dynamic: setting
list_add <= 1");
}
if (1 != SafeNativeMethods.ENGINE_ctrl_cmd(engine, "LOAD", 1,
IntPtr.Zero, null, 0))
{
throw new InvalidOperationException( "dynamic: setting load
<= 1");
}
}
}
This function is writtien in C# but it shouldn't be rather a problem, cause it
looks nearly the same as with C code.
According to some manuals and other stuff i should be able to load dynamic
engine for pkcs11 module and i am because for example this command:
OpenSSL> engine dynamic -pre SO_PATH:/usr/lib/engines-1.1/libpkcs11.so -pre
ID:pkcs11 -pre LIST_ADD:1 -pre LOAD -pre MODULE_PATH:/usr/lib/libckteec.so
works and produces log:
(dynamic) Dynamic engine loading support
[Success]: SO_PATH:/usr/lib/engines-1.1/libpkcs11.so
[Success]: ID:pkcs11
[Success]: LIST_ADD:1
[Success]: LOAD
[Success]: MODULE_PATH:/usr/lib/libckteec.so
Loaded: (pkcs11) pkcs11 engine
but as i said it before, when using my method i get an error on call for
ENGINE_ctrl_cmd_string method. The error code which i'm getting is 0.
I would be very apprecieate if someone could help me solve this issue.
BR
Piotr Lobacz
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