re-add (2.4) preliminary compat script but load it on 2.3 (JRuby 9.1)

... as well - since C openssl is pretty much gem-ified these days

Author: kares

lib/jopenssl/_compat23.rb

@@ -0,0 +1,71 @@
+# frozen_string_literal: false
+
+module OpenSSL
+
+  module PKey
+
+    class DH
+
+      def set_key(pub_key, priv_key)
+        self.public_key = pub_key
+        self.priv_key = priv_key
+        self
+      end
+
+      def set_pqg(p, q, g)
+        self.p = p
+        if respond_to?(:q)
+          self.q = q
+        else # TODO self.q = q
+          OpenSSL.warn "JRuby-OpenSSL does not support setting q param on #{inspect}" if q
+        end
+        self.g = g
+        self
+      end
+
+    end
+
+    class DSA
+
+      def set_key(pub_key, priv_key)
+        self.public_key = pub_key
+        self.priv_key = priv_key
+        self
+      end
+
+      def set_pqg(p, q, g)
+        self.p = p
+        self.q = q
+        self.g = g
+        self
+      end
+
+    end
+
+    class RSA
+
+      def set_key(n, e, d)
+        self.n = n
+        self.e = e
+        self.d = d
+        self
+      end
+
+      def set_factors(p, q)
+        self.p = p
+        self.q = q
+        self
+      end
+
+      def set_crt_params(dmp1, dmq1, iqmp)
+        self.dmp1 = dmp1
+        self.dmq1 = dmq1
+        self.iqmp = iqmp
+        self
+      end
+
+    end
+
+  end
+
+end

lib/jopenssl/load.rb

@@ -32,7 +32,7 @@
 
 if RUBY_VERSION > '2.3'
   load 'jopenssl23/openssl.rb'
-  load 'jopenssl24.rb' if RUBY_VERSION >= '2.4'
+  load 'jopenssl/_compat23.rb'
 elsif RUBY_VERSION > '2.2'
   load 'jopenssl22/openssl.rb'
 elsif RUBY_VERSION > '2.1'