diff --git a/letsencrypt/client/plugins/nginx/nginxparser.py b/letsencrypt/client/plugins/nginx/nginxparser.py
index c825fbb31..8f995cf61 100644
--- a/letsencrypt/client/plugins/nginx/nginxparser.py
+++ b/letsencrypt/client/plugins/nginx/nginxparser.py
@@ -105,6 +105,4 @@ def dumps(blocks, indentation=4):
 
 
 def dump(blocks, _file, indentation=4):
-    _file.write(dumps(blocks, indentation))
-    _file.close()
-    return _file
+    return _file.write(dumps(blocks, indentation))
diff --git a/letsencrypt/client/plugins/nginx/parser.py b/letsencrypt/client/plugins/nginx/parser.py
index 6fd6f381d..ad59911ec 100644
--- a/letsencrypt/client/plugins/nginx/parser.py
+++ b/letsencrypt/client/plugins/nginx/parser.py
@@ -129,13 +129,15 @@ class NginxParser(object):
         """
         enabled = True  # We only look at enabled vhosts for now
         vhosts = []
-        for filename, tree in self.parsed:
+        for filename in self.parsed:
+            tree = self.parsed[filename]
             vhost = obj.VirtulHost(filename,
                                    self._get_addrs(tree),
                                    self._get_ssl(tree),
                                    enabled,
                                    self._get_names(tree))
             vhosts.append(vhost)
+        return vhosts
 
     def add_dir_to_ifmodssl(self, aug_conf_path, directive, val):
         """Adds directive and value to IfMod ssl block.
@@ -369,9 +371,10 @@ class NginxParser(object):
             if f in self.parsed:
                 continue
             try:
-                parsed = load(open(f))
-                self.parsed[f] = parsed
-                trees.append(parsed)
+                with open(f) as fo:
+                    parsed = load(fo)
+                    self.parsed[f] = parsed
+                    trees.append(parsed)
             except IOError:
                 logging.warn("Could not open file: %s" % f)
             except pyparsing.ParseException:
@@ -431,6 +434,23 @@ class NginxParser(object):
         raise errors.LetsEncryptNoInstallationError(
             "Could not find configuration root")
 
+    def filedump(self, ext='tmp'):
+        """Dumps parsed configurations into files.
+
+        :param str ext: The file extension to use for the dumped files. If
+            empty, this overrides the existing conf files.
+
+        """
+        for filename in self.parsed:
+            tree = self.parsed[filename]
+            if ext:
+                filename = filename + os.path.extsep + ext
+            try:
+                with open(filename, 'w') as f:
+                    dump(tree, f)
+            except IOError:
+                logging.error("Could not open file for writing: %s" % filename)
+
 
 def case_i(string):
     """Returns case insensitive regex.
diff --git a/letsencrypt/client/plugins/nginx/tests/nginxparser_test.py b/letsencrypt/client/plugins/nginx/tests/nginxparser_test.py
index fe5f884d3..00ea9e6c5 100644
--- a/letsencrypt/client/plugins/nginx/tests/nginxparser_test.py
+++ b/letsencrypt/client/plugins/nginx/tests/nginxparser_test.py
@@ -95,6 +95,7 @@ class TestRawNginxParser(unittest.TestCase):
                                   ['index', 'index.html index.htm']]]]])
         f = open(util.get_data_filename('nginx.new.conf'), 'w')
         dump(parsed, f)
+        f.close()
         parsed_new = load(open(util.get_data_filename('nginx.new.conf')))
         self.assertEquals(parsed, parsed_new)
 
diff --git a/letsencrypt/client/plugins/nginx/tests/parser_test.py b/letsencrypt/client/plugins/nginx/tests/parser_test.py
index c3c809521..4502c5859 100644
--- a/letsencrypt/client/plugins/nginx/tests/parser_test.py
+++ b/letsencrypt/client/plugins/nginx/tests/parser_test.py
@@ -1,4 +1,5 @@
 """Tests for letsencrypt.client.plugins.nginx.parser."""
+import glob
 import os
 import shutil
 import sys
@@ -29,8 +30,8 @@ class NginxParserTest(util.NginxTest):
         shutil.rmtree(self.work_dir)
 
     def test_root_normalized(self):
-        path = os.path.join(self.temp_dir, "debian_nginx_2_4/////"
-                            "two_vhost_80/../../testdata")
+        path = os.path.join(self.temp_dir, "foo/////"
+                            "bar/../../testdata")
         parser = NginxParser(path, None)
         self.assertEqual(parser.root, self.config_path)
 
@@ -46,20 +47,38 @@ class NginxParserTest(util.NginxTest):
         """Test recursive conf file parsing.
 
         """
-        self.parser = NginxParser(self.config_path, self.ssl_options)
-        self.assertEqual(set(map(self.parser.abs_path,
+        parser = NginxParser(self.config_path, self.ssl_options)
+        self.assertEqual(set(map(parser.abs_path,
                              ['foo.conf', 'nginx.conf', 'server.conf',
                               'sites-enabled/default',
                               'sites-enabled/example.com'])),
-                         set(self.parser.parsed.keys()))
+                         set(parser.parsed.keys()))
         self.assertEqual([['server_name', 'somename  alias  another.alias']],
-                         self.parser.parsed[self.parser.abs_path(
-                             'server.conf')])
+                         parser.parsed[parser.abs_path('server.conf')])
         self.assertEqual([[['server'], [['listen', '9000'],
                                         ['server_name', 'example.com']]]],
-                         self.parser.parsed[self.parser.abs_path(
+                         parser.parsed[parser.abs_path(
                              'sites-enabled/example.com')])
 
+    def test_abs_path(self):
+        parser = NginxParser(self.config_path, self.ssl_options)
+        self.assertEqual('/etc/nginx/*', parser.abs_path('/etc/nginx/*'))
+        self.assertEqual(os.path.join(self.config_path, 'foo/bar/'),
+                         parser.abs_path('foo/bar/'))
+
+    def test_filedump(self):
+        parser = NginxParser(self.config_path, self.ssl_options)
+        parser.filedump('test')
+        # pylint: disable=protected-access
+        parsed = parser._parse_files(parser.abs_path(
+            'sites-enabled/example.com.test'))
+        self.assertEqual(3, len(glob.glob(parser.abs_path('*.test'))))
+        self.assertEqual(2, len(
+            glob.glob(parser.abs_path('sites-enabled/*.test'))))
+        self.assertEqual([[['server'], [['listen', '9000'],
+                                        ['server_name', 'example.com']]]],
+                         parsed[0])
+
 #    def test_find_dir(self):
 #        from letsencrypt.client.plugins.nginx.parser import case_i
 #        test = self.parser.find_dir(case_i("Listen"), "443")