added a wrapper plugin for OpenSSL crypters (AES, 3DES, Blowfish etc.)

configure.in

@@ -496,6 +496,16 @@ AC_ARG_ENABLE(
 	fi],
 )
 
+AC_ARG_ENABLE(
+	[openssl],
+	AS_HELP_STRING([--enable-openssl],[enables the OpenSSL crypto plugin. (default is NO).]),
+	[if test x$enableval = xyes; then
+		openssl=true
+	 else
+		openssl=false
+	fi],
+)
+
 dnl =========================
 dnl  check required programs
 dnl =========================
@@ -597,6 +607,11 @@ if test x$mysql = xtrue; then
 	AC_CHECK_HEADER([sqlite3.h],,[AC_MSG_ERROR([SQLite header sqlite3.h not found!])])
 fi
 
+if test x$openssl = xtrue; then
+	AC_HAVE_LIBRARY([ssl],[LIBS="$LIBS"],[AC_MSG_ERROR([OpenSSL library ssl not found])])
+	AC_CHECK_HEADER([openssl/evp.h],,[AC_MSG_ERROR([OpenSSL header openssl/evp.h not found!])])
+fi
+
 dnl =========================
 dnl  set Makefile.am vars
 dnl =========================
@@ -643,6 +658,7 @@ AM_CONDITIONAL(USE_PLUTO_OR_CHARON, test x$pluto = xtrue -o x$charon = xtrue)
 AM_CONDITIONAL(USE_LIBSTRONGSWAN, test x$charon = xtrue -o x$tools = xtrue)
 AM_CONDITIONAL(USE_FILE_CONFIG, test x$pluto = xtrue -o x$stroke = xtrue)
 AM_CONDITIONAL(USE_PADLOCK, test x$padlock = xtrue)
+AM_CONDITIONAL(USE_OPENSSL, test x$openssl = xtrue)
 
 dnl ==============================
 dnl  set global definitions
@@ -676,6 +692,7 @@ AC_OUTPUT(
 	src/libstrongswan/plugins/mysql/Makefile
 	src/libstrongswan/plugins/sqlite/Makefile
 	src/libstrongswan/plugins/padlock/Makefile
+	src/libstrongswan/plugins/openssl/Makefile
 	src/libcrypto/Makefile
 	src/libfreeswan/Makefile
 	src/pluto/Makefile