preliminary OpenSSL 1.1 (Ruby 2.4) compatibility bits

... mostly port of OpenSSL 1.1.0's new opaque methods for PKey types

https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/55285

Author: kares

lib/jopenssl/load.rb

@@ -27,6 +27,7 @@
 
 if RUBY_VERSION > '2.3'
   load 'jopenssl23/openssl.rb'
+  load 'jopenssl24.rb' if RUBY_VERSION >= '2.4'
 elsif RUBY_VERSION > '2.2'
   load 'jopenssl22/openssl.rb'
 elsif RUBY_VERSION > '2.1'

lib/jopenssl24.rb

@@ -0,0 +1,77 @@
+# frozen_string_literal: false
+
+# Ruby 2.4 preliminary compatibility script, loaded after all (2.3) jruby-openssl files
+
+module OpenSSL
+
+  module SSL
+    class SSLContext
+      # OpenSSL 1.1.0 introduced "security level"
+      def security_level; 0 end
+      def security_level=(level); raise NotImplementedError end
+    end
+  end
+
+  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
+        self.q = q
+        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