crypt32: Support getting the inner content OID from a decoded signed message.

dlls/crypt32/msg.c

@@ -1760,6 +1760,14 @@ static BOOL CDecodeSignedMsg_GetParam(CDecodeMsg *msg, DWORD dwParamType,
         else
             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
         break;
+    case CMSG_INNER_CONTENT_TYPE_PARAM:
+        if (msg->u.signedInfo)
+            ret = CRYPT_CopyParam(pvData, pcbData,
+             msg->u.signedInfo->content.pszObjId,
+             strlen(msg->u.signedInfo->content.pszObjId) + 1);
+        else
+            SetLastError(CRYPT_E_INVALID_MSG_TYPE);
+        break;
     case CMSG_SIGNER_COUNT_PARAM:
         if (msg->u.signedInfo)
             ret = CRYPT_CopyParam(pvData, pcbData,

dlls/crypt32/tests/msg.c

@@ -1978,7 +1978,6 @@ static void test_decode_msg_get_param(void)
     ok(ret, "CryptMsgUpdate failed: %08x\n", GetLastError());
     check_param("signed content", msg, CMSG_CONTENT_PARAM, msgData,
      sizeof(msgData));
-    todo_wine
     check_param("inner content", msg, CMSG_INNER_CONTENT_TYPE_PARAM,
      (const BYTE *)szOID_RSA_data, strlen(szOID_RSA_data) + 1);
     size = sizeof(value);