* ext/openssl/extconf.rb: add check for OBJ_NAME_do_all_sorted.

* ext/openssl/ossl_cipher.c (ossl_s_ciphers): new method
  OpenSSL::Cipher.ciphers. it returns all the cipher names.

* ext/openssl/lib/openssl/cipher.rb:
  - add constants AES128, AES192, AES256. [ruby-dev:28610]
  - reimplement without eval()

* ext/openssl/lib/openssl/digest.rb: reimplement without eval().

* test/openssl/test_cipher.rb, test_digest: fix about reimplemented
  features.

* sample/openssl/cipher.rb: rewrite all.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10339 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/openssl/lib/openssl/cipher.rb

@@ -20,19 +20,25 @@
 
 module OpenSSL
   module Cipher
-    %w(AES CAST5 BF DES IDEA RC2 RC4 RC5).each{|cipher|
-      eval(<<-EOD)
-        class #{cipher} < Cipher
-          def initialize(*args)
-            args = args.join('-')
-            if args.size == 0
-              super(\"#{cipher}\")
-            else
-              super(\"#{cipher}-#\{args\}\")
-            end
-          end
-        end
-      EOD
+    %w(AES CAST5 BF DES IDEA RC2 RC4 RC5).each{|name|
+      klass = Class.new(Cipher){
+        define_method(:initialize){|*args|
+          cipher_name = args.inject(name){|n, arg| "#{n}-#{arg}" }
+          super(cipher_name)
+        }
+      }
+      const_set(name, klass)
+    }
+
+    %w(128 192 256).each{|keylen|
+      klass = Class.new(Cipher){
+        define_method(:initialize){|mode|
+          mode ||= "CBC"
+          cipher_name = "AES-#{keylen}-#{mode}"
+          super(cipher_name)
+        }
+      }
+      const_set("AES#{keylen}", klass)
     }
 
     class Cipher

ext/openssl/lib/openssl/digest.rb

@@ -26,22 +26,22 @@ module OpenSSL
       alg += %w(SHA224 SHA256 SHA384 SHA512)
     end
 
-    alg.each{|digest|
-      self.module_eval(<<-EOD)
-        class #{digest} < Digest
-          def initialize(data=nil)
-            super(\"#{digest}\", data)
+    alg.each{|name|
+      klass = Class.new(Digest){
+        define_method(:initialize){|*data|
+          if data.length > 1
+            raise ArgumentError,
+              "wrong number of arguments (#{data.length} for 1)"
           end
-
-          def #{digest}::digest(data)
-            Digest::digest(\"#{digest}\", data)
-          end
-
-          def #{digest}::hexdigest(data)
-            Digest::hexdigest(\"#{digest}\", data)
-          end
-        end
-      EOD
+          super(name, data.first)
+        }
+      }
+      singleton = (class <<klass; self; end)
+      singleton.class_eval{
+        define_method(:digest){|data| Digest.digest(name, data) }
+        define_method(:hexdigest){|data| Digest.hexdigest(name, data) }
+      }
+      const_set(name, klass)
     }
 
   end # Digest