Fix CentOS 6 installer issue (#6784)

In CentOS 6 default httpd configuration, the `LoadModule ssl_module ...` is handled in `conf.d/ssl.conf`. As the `VirtualHost` configuration files in `conf.d/` are loaded in alphabetical order, this means that all files that have `<IfModule mod_ssl.c>` and are loaded before `ssl.conf` are effectively ignored. This PR moves the `LoadModule ssl_module` to the main `httpd.conf` while leaving a conditional `LoadModule` directive in `ssl.conf`.

Features
 - Reads the module configuration from `ssl.conf` in case some modifications to paths have been made by the user.
 - Falls back to default paths if the directive doesn't exist.
 - Moves the `LoadModule` directive in `ssl.conf` inside `<IfModule !mod_ssl.c>` to avoid printing warning messages of duplicate module loads.
 - Adds `LoadModule ssl_module` inside of `<IfModule !mod_ssl.c>` to the top of the main `httpd.conf`.
 - Ensures that these modifications are not made multiple times.

Fixes: #6606

* Fix CentOS6 installer issue

* Changelog entry

* Address review comments

* Do not enable mod_ssl if multiple different values were found

* Add test comment

* Address rest of the review comments

* Address review comments

* Better ifmodule argument checking

* Test fixes

* Make linter happy

* Raise an exception when differing LoadModule ssl_module statements are found

* If IfModule !mod_ssl.c with LoadModule ssl_module already exists in Augeas path, do not create new LoadModule directive

* Do not use deprecated assertion functions

* Address review comments

* Kick tests

* Revert "Kick tests"

This reverts commit 967bb574c2d7d6175133931826cc2cdb4b997dda.

* Address review comments

* Add pydoc return value to create_ifmod

9 files changed, 1655 insertions, 8 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2cc823d1c..e74779ac0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -28,6 +28,9 @@ Certbot adheres to [Semantic Versioning](https://semver.org/).
 * Certbot uses the Python library cryptography for OCSP when cryptography>=2.5
   is installed. We fixed a bug in Certbot causing it to interpret timestamps in
   the OCSP response as being in the local timezone rather than UTC.
+* Issue causing the default CentOS 6 TLS configuration to ignore some of the 
+  HTTPS VirtualHosts created by Certbot. mod_ssl loading is now moved to main 
+  http.conf for this environment where possible.
 
 Despite us having broken lockstep, we are continuing to release new versions of
 all Certbot components during releases for the time being, however, the only
diff --git a/certbot-apache/certbot_apache/override_centos.py b/certbot-apache/certbot_apache/override_centos.py
index a4f1b84ec..1995fd2a2 100644
--- a/certbot-apache/certbot_apache/override_centos.py
+++ b/certbot-apache/certbot_apache/override_centos.py
@@ -1,13 +1,21 @@
 """ Distribution specific override class for CentOS family (RHEL, Fedora) """
+import logging
 import pkg_resources
 
+from acme.magic_typing import List  # pylint: disable=unused-import, no-name-in-module
+
 import zope.interface
 
 from certbot import interfaces
 
+
 from certbot_apache import apache_util
 from certbot_apache import configurator
 from certbot_apache import parser
+from certbot.errors import MisconfigurationError
+
+logger = logging.getLogger(__name__)
+
 
 @zope.interface.provider(interfaces.IPluginFactory)
 class CentOSConfigurator(configurator.ApacheConfigurator):
@@ -47,6 +55,84 @@ class CentOSConfigurator(configurator.ApacheConfigurator):
             self.aug, self.option("server_root"), self.option("vhost_root"),
             self.version, configurator=self)
 
+    def _deploy_cert(self, *args, **kwargs):
+        """
+        Override _deploy_cert in order to ensure that the Apache configuration
+        has "LoadModule ssl_module..." before parsing the VirtualHost configuration
+        that was created by Certbot
+        """
+        super(CentOSConfigurator, self)._deploy_cert(*args, **kwargs)
+        if self.version < (2, 4, 0):
+            self._deploy_loadmodule_ssl_if_needed()
+
+
+    def _deploy_loadmodule_ssl_if_needed(self):
+        """
+        Add "LoadModule ssl_module <pre-existing path>" to main httpd.conf if
+        it doesn't exist there already.
+        """
+
+        loadmods = self.parser.find_dir("LoadModule", "ssl_module", exclude=False)
+
+        correct_ifmods = []  # type: List[str]
+        loadmod_args = []  # type: List[str]
+        loadmod_paths = []  # type: List[str]
+        for m in loadmods:
+            noarg_path = m.rpartition("/")[0]
+            path_args = self.parser.get_all_args(noarg_path)
+            if loadmod_args:
+                if loadmod_args != path_args:
+                    msg = ("Certbot encountered multiple LoadModule directives "
+                           "for LoadModule ssl_module with differing library paths. "
+                           "Please remove or comment out the one(s) that are not in "
+                           "use, and run Certbot again.")
+                    raise MisconfigurationError(msg)
+            else:
+                loadmod_args = path_args
+
+            if self.parser.not_modssl_ifmodule(noarg_path):  # pylint: disable=no-member
+                if self.parser.loc["default"] in noarg_path:
+                    # LoadModule already in the main configuration file
+                    if ("ifmodule/" in noarg_path.lower() or
+                        "ifmodule[1]" in noarg_path.lower()):
+                        # It's the first or only IfModule in the file
+                        return
+                # Populate the list of known !mod_ssl.c IfModules
+                nodir_path = noarg_path.rpartition("/directive")[0]
+                correct_ifmods.append(nodir_path)
+            else:
+                loadmod_paths.append(noarg_path)
+
+        if not loadmod_args:
+            # Do not try to enable mod_ssl
+            return
+
+        # Force creation as the directive wasn't found from the beginning of
+        # httpd.conf
+        rootconf_ifmod = self.parser.create_ifmod(
+            parser.get_aug_path(self.parser.loc["default"]),
+            "!mod_ssl.c", beginning=True)
+        # parser.get_ifmod returns a path postfixed with "/", remove that
+        self.parser.add_dir(rootconf_ifmod[:-1], "LoadModule", loadmod_args)
+        correct_ifmods.append(rootconf_ifmod[:-1])
+        self.save_notes += "Added LoadModule ssl_module to main configuration.\n"
+
+        # Wrap LoadModule mod_ssl inside of <IfModule !mod_ssl.c> if it's not
+        # configured like this already.
+        for loadmod_path in loadmod_paths:
+            nodir_path = loadmod_path.split("/directive")[0]
+            # Remove the old LoadModule directive
+            self.aug.remove(loadmod_path)
+
+            # Create a new IfModule !mod_ssl.c if not already found on path
+            ssl_ifmod = self.parser.get_ifmod(nodir_path, "!mod_ssl.c",
+                                            beginning=True)[:-1]
+            if ssl_ifmod not in correct_ifmods:
+                self.parser.add_dir(ssl_ifmod, "LoadModule", loadmod_args)
+                correct_ifmods.append(ssl_ifmod)
+                self.save_notes += ("Wrapped pre-existing LoadModule ssl_module "
+                                    "inside of <IfModule !mod_ssl> block.\n")
+
 
 class CentOSParser(parser.ApacheParser):
     """CentOS specific ApacheParser override class"""
@@ -66,3 +152,33 @@ class CentOSParser(parser.ApacheParser):
         defines = apache_util.parse_define_file(self.sysconfig_filep, "OPTIONS")
         for k in defines.keys():
             self.variables[k] = defines[k]
+
+    def not_modssl_ifmodule(self, path):
+        """Checks if the provided Augeas path has argument !mod_ssl"""
+
+        if "ifmodule" not in path.lower():
+            return False
+
+        # Trim the path to the last ifmodule
+        workpath = path.lower()
+        while workpath:
+            # Get path to the last IfModule (ignore the tail)
+            parts = workpath.rpartition("ifmodule")
+
+            if not parts[0]:
+                # IfModule not found
+                break
+            ifmod_path = parts[0] + parts[1]
+            # Check if ifmodule had an index
+            if parts[2].startswith("["):
+                # Append the index from tail
+                ifmod_path += parts[2].partition("/")[0]
+            # Get the original path trimmed to correct length
+            # This is required to preserve cases
+            ifmod_real_path = path[0:len(ifmod_path)]
+            if "!mod_ssl.c" in self.get_all_args(ifmod_real_path):
+                return True
+            # Set the workpath to the heading part
+            workpath = parts[0]
+
+        return False
diff --git a/certbot-apache/certbot_apache/parser.py b/certbot-apache/certbot_apache/parser.py
index b9f23f6cf..b025396ad 100644
--- a/certbot-apache/certbot_apache/parser.py
+++ b/certbot-apache/certbot_apache/parser.py
@@ -281,7 +281,7 @@ class ApacheParser(object):
         """
         # TODO: Add error checking code... does the path given even exist?
         #       Does it throw exceptions?
-        if_mod_path = self._get_ifmod(aug_conf_path, "mod_ssl.c")
+        if_mod_path = self.get_ifmod(aug_conf_path, "mod_ssl.c")
         # IfModule can have only one valid argument, so append after
         self.aug.insert(if_mod_path + "arg", "directive", False)
         nvh_path = if_mod_path + "directive[1]"
@@ -292,22 +292,54 @@ class ApacheParser(object):
             for i, arg in enumerate(args):
                 self.aug.set("%s/arg[%d]" % (nvh_path, i + 1), arg)
 
-    def _get_ifmod(self, aug_conf_path, mod):
+    def get_ifmod(self, aug_conf_path, mod, beginning=False):
         """Returns the path to <IfMod mod> and creates one if it doesn't exist.
 
         :param str aug_conf_path: Augeas configuration path
         :param str mod: module ie. mod_ssl.c
+        :param bool beginning: If the IfModule should be created to the beginning
+            of augeas path DOM tree.
+
+        :returns: Augeas path of the requested IfModule directive that pre-existed
+            or was created during the process. The path may be dynamic,
+            i.e. .../IfModule[last()]
+        :rtype: str
 
         """
         if_mods = self.aug.match(("%s/IfModule/*[self::arg='%s']" %
                                   (aug_conf_path, mod)))
-        if len(if_mods) == 0:
-            self.aug.set("%s/IfModule[last() + 1]" % aug_conf_path, "")
-            self.aug.set("%s/IfModule[last()]/arg" % aug_conf_path, mod)
-            if_mods = self.aug.match(("%s/IfModule/*[self::arg='%s']" %
-                                      (aug_conf_path, mod)))
+        if not if_mods:
+            return self.create_ifmod(aug_conf_path, mod, beginning)
+
         # Strip off "arg" at end of first ifmod path
-        return if_mods[0][:len(if_mods[0]) - 3]
+        return if_mods[0].rpartition("arg")[0]
+
+    def create_ifmod(self, aug_conf_path, mod, beginning=False):
+        """Creates a new <IfMod mod> and returns its path.
+
+        :param str aug_conf_path: Augeas configuration path
+        :param str mod: module ie. mod_ssl.c
+        :param bool beginning: If the IfModule should be created to the beginning
+            of augeas path DOM tree.
+
+        :returns: Augeas path of the newly created IfModule directive.
+            The path may be dynamic, i.e. .../IfModule[last()]
+        :rtype: str
+
+        """
+        if beginning:
+            c_path_arg = "{}/IfModule[1]/arg".format(aug_conf_path)
+            # Insert IfModule before the first directive
+            self.aug.insert("{}/directive[1]".format(aug_conf_path),
+                            "IfModule", True)
+            retpath = "{}/IfModule[1]/".format(aug_conf_path)
+        else:
+            c_path = "{}/IfModule[last() + 1]".format(aug_conf_path)
+            c_path_arg = "{}/IfModule[last()]/arg".format(aug_conf_path)
+            self.aug.set(c_path, "")
+            retpath = "{}/IfModule[last()]/".format(aug_conf_path)
+        self.aug.set(c_path_arg, mod)
+        return retpath
 
     def add_dir(self, aug_conf_path, directive, args):
         """Appends directive to the end fo the file given by aug_conf_path.
@@ -453,6 +485,20 @@ class ApacheParser(object):
 
         return ordered_matches
 
+    def get_all_args(self, match):
+        """
+        Tries to fetch all arguments for a directive. See get_arg.
+
+        Note that if match is an ancestor node, it returns all names of
+        child directives as well as the list of arguments.
+
+        """
+
+        if match[-1] != "/":
+            match = match+"/"
+        allargs = self.aug.match(match + '*')
+        return [self.get_arg(arg) for arg in allargs]
+
     def get_arg(self, match):
         """Uses augeas.get to get argument value and interprets result.
 
diff --git a/certbot-apache/certbot_apache/tests/centos6_test.py b/certbot-apache/certbot_apache/tests/centos6_test.py
new file mode 100644
index 000000000..ea8a85ed7
--- /dev/null
+++ b/certbot-apache/certbot_apache/tests/centos6_test.py
@@ -0,0 +1,224 @@
+"""Test for certbot_apache.configurator for CentOS 6 overrides"""
+import os
+import unittest
+
+from certbot_apache import obj
+from certbot_apache import override_centos
+from certbot_apache import parser
+from certbot_apache.tests import util
+from certbot.errors import MisconfigurationError
+
+def get_vh_truth(temp_dir, config_name):
+    """Return the ground truth for the specified directory."""
+    prefix = os.path.join(
+        temp_dir, config_name, "httpd/conf.d")
+
+    aug_pre = "/files" + prefix
+    vh_truth = [
+        obj.VirtualHost(
+            os.path.join(prefix, "test.example.com.conf"),
+            os.path.join(aug_pre, "test.example.com.conf/VirtualHost"),
+            set([obj.Addr.fromstring("*:80")]),
+            False, True, "test.example.com"),
+        obj.VirtualHost(
+            os.path.join(prefix, "ssl.conf"),
+            os.path.join(aug_pre, "ssl.conf/VirtualHost"),
+            set([obj.Addr.fromstring("_default_:443")]),
+            True, True, None)
+    ]
+    return vh_truth
+
+class CentOS6Tests(util.ApacheTest):
+    """Tests for CentOS 6"""
+
+    def setUp(self):  # pylint: disable=arguments-differ
+        test_dir = "centos6_apache/apache"
+        config_root = "centos6_apache/apache/httpd"
+        vhost_root = "centos6_apache/apache/httpd/conf.d"
+        super(CentOS6Tests, self).setUp(test_dir=test_dir,
+                                        config_root=config_root,
+                                        vhost_root=vhost_root)
+
+        self.config = util.get_apache_configurator(
+            self.config_path, self.vhost_path, self.config_dir, self.work_dir,
+            version=(2, 2, 15), os_info="centos")
+        self.vh_truth = get_vh_truth(
+            self.temp_dir, "centos6_apache/apache")
+
+    def test_get_parser(self):
+        self.assertTrue(isinstance(self.config.parser,
+                                   override_centos.CentOSParser))
+
+    def test_get_virtual_hosts(self):
+        """Make sure all vhosts are being properly found."""
+        vhs = self.config.get_virtual_hosts()
+        self.assertEqual(len(vhs), 2)
+        found = 0
+
+        for vhost in vhs:
+            for centos_truth in self.vh_truth:
+                if vhost == centos_truth:
+                    found += 1
+                    break
+            else:
+                raise Exception("Missed: %s" % vhost)  # pragma: no cover
+        self.assertEqual(found, 2)
+
+    def test_loadmod_default(self):
+        ssl_loadmods = self.config.parser.find_dir(
+            "LoadModule", "ssl_module", exclude=False)
+        self.assertEqual(len(ssl_loadmods), 1)
+        # Make sure the LoadModule ssl_module is in ssl.conf (default)
+        self.assertTrue("ssl.conf" in ssl_loadmods[0])
+        # ...and that it's not inside of <IfModule>
+        self.assertFalse("IfModule" in ssl_loadmods[0])
+
+        # Get the example vhost
+        self.config.assoc["test.example.com"] = self.vh_truth[0]
+        self.config.deploy_cert(
+            "random.demo", "example/cert.pem", "example/key.pem",
+            "example/cert_chain.pem", "example/fullchain.pem")
+        self.config.save()
+
+        post_loadmods = self.config.parser.find_dir(
+            "LoadModule", "ssl_module", exclude=False)
+
+        # We should now have LoadModule ssl_module in root conf and ssl.conf
+        self.assertEqual(len(post_loadmods), 2)
+        for lm in post_loadmods:
+            # lm[:-7] removes "/arg[#]" from the path
+            arguments = self.config.parser.get_all_args(lm[:-7])
+            self.assertEqual(arguments, ["ssl_module", "modules/mod_ssl.so"])
+            # ...and both of them should be wrapped in <IfModule !mod_ssl.c>
+            # lm[:-17] strips off /directive/arg[1] from the path.
+            ifmod_args = self.config.parser.get_all_args(lm[:-17])
+            self.assertTrue("!mod_ssl.c" in ifmod_args)
+
+    def test_loadmod_multiple(self):
+        sslmod_args = ["ssl_module", "modules/mod_ssl.so"]
+        # Adds another LoadModule to main httpd.conf in addtition to ssl.conf
+        self.config.parser.add_dir(self.config.parser.loc["default"], "LoadModule",
+                                   sslmod_args)
+        self.config.save()
+        pre_loadmods = self.config.parser.find_dir(
+            "LoadModule", "ssl_module", exclude=False)
+        # LoadModules are not within IfModule blocks
+        self.assertFalse(any(["ifmodule" in m.lower() for m in pre_loadmods]))
+        self.config.assoc["test.example.com"] = self.vh_truth[0]
+        self.config.deploy_cert(
+            "random.demo", "example/cert.pem", "example/key.pem",
+            "example/cert_chain.pem", "example/fullchain.pem")
+        post_loadmods = self.config.parser.find_dir(
+            "LoadModule", "ssl_module", exclude=False)
+
+        for mod in post_loadmods:
+            self.assertTrue(self.config.parser.not_modssl_ifmodule(mod))  #pylint: disable=no-member
+
+    def test_loadmod_rootconf_exists(self):
+        sslmod_args = ["ssl_module", "modules/mod_ssl.so"]
+        rootconf_ifmod = self.config.parser.get_ifmod(
+            parser.get_aug_path(self.config.parser.loc["default"]),
+            "!mod_ssl.c", beginning=True)
+        self.config.parser.add_dir(rootconf_ifmod[:-1], "LoadModule", sslmod_args)
+        self.config.save()
+        # Get the example vhost
+        self.config.assoc["test.example.com"] = self.vh_truth[0]
+        self.config.deploy_cert(
+            "random.demo", "example/cert.pem", "example/key.pem",
+            "example/cert_chain.pem", "example/fullchain.pem")
+        self.config.save()
+
+        root_loadmods = self.config.parser.find_dir(
+            "LoadModule", "ssl_module",
+            start=parser.get_aug_path(self.config.parser.loc["default"]),
+            exclude=False)
+
+        mods = [lm for lm in root_loadmods if self.config.parser.loc["default"] in lm]
+
+        self.assertEqual(len(mods), 1)
+        # [:-7] removes "/arg[#]" from the path
+        self.assertEqual(
+            self.config.parser.get_all_args(mods[0][:-7]),
+            sslmod_args)
+
+    def test_neg_loadmod_already_on_path(self):
+        loadmod_args = ["ssl_module", "modules/mod_ssl.so"]
+        ifmod = self.config.parser.get_ifmod(
+            self.vh_truth[1].path, "!mod_ssl.c", beginning=True)
+        self.config.parser.add_dir(ifmod[:-1], "LoadModule", loadmod_args)
+        self.config.parser.add_dir(self.vh_truth[1].path, "LoadModule", loadmod_args)
+        self.config.save()
+        pre_loadmods = self.config.parser.find_dir(
+            "LoadModule", "ssl_module", start=self.vh_truth[1].path, exclude=False)
+        self.assertEqual(len(pre_loadmods), 2)
+        # The ssl.conf now has two LoadModule directives, one inside of
+        # !mod_ssl.c IfModule
+        self.config.assoc["test.example.com"] = self.vh_truth[0]
+        self.config.deploy_cert(
+            "random.demo", "example/cert.pem", "example/key.pem",
+            "example/cert_chain.pem", "example/fullchain.pem")
+        self.config.save()
+        # Ensure that the additional LoadModule wasn't written into the IfModule
+        post_loadmods = self.config.parser.find_dir(
+            "LoadModule", "ssl_module", start=self.vh_truth[1].path, exclude=False)
+        self.assertEqual(len(post_loadmods), 1)
+
+
+
+
+
+    def test_loadmod_non_duplicate(self):
+        # the modules/mod_ssl.so exists in ssl.conf
+        sslmod_args = ["ssl_module", "modules/mod_somethingelse.so"]
+        rootconf_ifmod = self.config.parser.get_ifmod(
+            parser.get_aug_path(self.config.parser.loc["default"]),
+            "!mod_ssl.c", beginning=True)
+        self.config.parser.add_dir(rootconf_ifmod[:-1], "LoadModule", sslmod_args)
+        self.config.save()
+        self.config.assoc["test.example.com"] = self.vh_truth[0]
+        pre_matches = self.config.parser.find_dir("LoadModule",
+                                                  "ssl_module", exclude=False)
+
+        self.assertRaises(MisconfigurationError, self.config.deploy_cert,
+                "random.demo", "example/cert.pem", "example/key.pem",
+                "example/cert_chain.pem", "example/fullchain.pem")
+
+        post_matches = self.config.parser.find_dir("LoadModule",
+                                                   "ssl_module", exclude=False)
+        # Make sure that none was changed
+        self.assertEqual(pre_matches, post_matches)
+
+    def test_loadmod_not_found(self):
+        # Remove all existing LoadModule ssl_module... directives
+        orig_loadmods = self.config.parser.find_dir("LoadModule",
+                                                    "ssl_module",
+                                                    exclude=False)
+        for mod in orig_loadmods:
+            noarg_path = mod.rpartition("/")[0]
+            self.config.aug.remove(noarg_path)
+        self.config.save()
+        self.config.deploy_cert(
+            "random.demo", "example/cert.pem", "example/key.pem",
+            "example/cert_chain.pem", "example/fullchain.pem")
+
+        post_loadmods = self.config.parser.find_dir("LoadModule",
+                                                    "ssl_module",
+                                                    exclude=False)
+        self.assertFalse(post_loadmods)
+
+    def test_no_ifmod_search_false(self):
+        #pylint: disable=no-member
+
+        self.assertFalse(self.config.parser.not_modssl_ifmodule(
+            "/path/does/not/include/ifmod"
+        ))
+        self.assertFalse(self.config.parser.not_modssl_ifmodule(
+            ""
+        ))
+        self.assertFalse(self.config.parser.not_modssl_ifmodule(
+            "/path/includes/IfModule/but/no/arguments"
+        ))
+
+
+if __name__ == "__main__":
+    unittest.main()  # pragma: no cover
diff --git a/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf.d/README b/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf.d/README
new file mode 100644
index 000000000..c12e149f2
--- /dev/null
+++ b/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf.d/README
@@ -0,0 +1,9 @@
+
+This directory holds Apache 2.0 module-specific configuration files;
+any files in this directory which have the ".conf" extension will be
+processed as Apache configuration files.
+
+Files are processed in alphabetical order, so if using configuration
+directives which depend on, say, mod_perl being loaded, ensure that
+these are placed in a filename later in the sort order than "perl.conf".
+
diff --git a/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf.d/ssl.conf b/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf.d/ssl.conf
new file mode 100644
index 000000000..fb2174af1
--- /dev/null
+++ b/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf.d/ssl.conf
@@ -0,0 +1,222 @@
+#
+# This is the Apache server configuration file providing SSL support.
+# It contains the configuration directives to instruct the server how to
+# serve pages over an https connection. For detailing information about these 
+# directives see <URL:http://httpd.apache.org/docs/2.2/mod/mod_ssl.html>
+# 
+# Do NOT simply read the instructions in here without understanding
+# what they do.  They're here only as hints or reminders.  If you are unsure
+# consult the online docs. You have been warned.  
+#
+
+LoadModule ssl_module modules/mod_ssl.so
+
+#
+# When we also provide SSL we have to listen to the 
+# the HTTPS port in addition.
+#
+Listen 443
+
+##
+##  SSL Global Context
+##
+##  All SSL configuration in this context applies both to
+##  the main server and all SSL-enabled virtual hosts.
+##
+
+#   Pass Phrase Dialog:
+#   Configure the pass phrase gathering process.
+#   The filtering dialog program (`builtin' is a internal
+#   terminal dialog) has to provide the pass phrase on stdout.
+SSLPassPhraseDialog  builtin
+
+#   Inter-Process Session Cache:
+#   Configure the SSL Session Cache: First the mechanism 
+#   to use and second the expiring timeout (in seconds).
+SSLSessionCache         shmcb:/var/cache/mod_ssl/scache(512000)
+SSLSessionCacheTimeout  300
+
+#   Semaphore:
+#   Configure the path to the mutual exclusion semaphore the
+#   SSL engine uses internally for inter-process synchronization. 
+SSLMutex default
+
+#   Pseudo Random Number Generator (PRNG):
+#   Configure one or more sources to seed the PRNG of the 
+#   SSL library. The seed data should be of good random quality.
+#   WARNING! On some platforms /dev/random blocks if not enough entropy
+#   is available. This means you then cannot use the /dev/random device
+#   because it would lead to very long connection times (as long as
+#   it requires to make more entropy available). But usually those
+#   platforms additionally provide a /dev/urandom device which doesn't
+#   block. So, if available, use this one instead. Read the mod_ssl User
+#   Manual for more details.
+SSLRandomSeed startup file:/dev/urandom  256
+SSLRandomSeed connect builtin
+#SSLRandomSeed startup file:/dev/random  512
+#SSLRandomSeed connect file:/dev/random  512
+#SSLRandomSeed connect file:/dev/urandom 512
+
+#
+# Use "SSLCryptoDevice" to enable any supported hardware
+# accelerators. Use "openssl engine -v" to list supported
+# engine names.  NOTE: If you enable an accelerator and the
+# server does not start, consult the error logs and ensure
+# your accelerator is functioning properly. 
+#
+SSLCryptoDevice builtin
+#SSLCryptoDevice ubsec
+
+##
+## SSL Virtual Host Context
+##
+
+<VirtualHost _default_:443>
+
+# General setup for the virtual host, inherited from global configuration
+#DocumentRoot "/var/www/html"
+#ServerName www.example.com:443
+
+# Use separate log files for the SSL virtual host; note that LogLevel
+# is not inherited from httpd.conf.
+ErrorLog logs/ssl_error_log
+TransferLog logs/ssl_access_log
+LogLevel warn
+
+#   SSL Engine Switch:
+#   Enable/Disable SSL for this virtual host.
+SSLEngine on
+
+#   SSL Protocol support:
+# List the enable protocol levels with which clients will be able to
+# connect.  Disable SSLv2 access by default:
+SSLProtocol all -SSLv2
+
+#   SSL Cipher Suite:
+# List the ciphers that the client is permitted to negotiate.
+# See the mod_ssl documentation for a complete list.
+SSLCipherSuite DEFAULT:!EXP:!SSLv2:!DES:!IDEA:!SEED:+3DES
+
+#   Server Certificate:
+# Point SSLCertificateFile at a PEM encoded certificate.  If
+# the certificate is encrypted, then you will be prompted for a
+# pass phrase.  Note that a kill -HUP will prompt again.  A new
+# certificate can be generated using the genkey(1) command.
+SSLCertificateFile /etc/pki/tls/certs/localhost.crt
+
+#   Server Private Key:
+#   If the key is not combined with the certificate, use this
+#   directive to point at the key file.  Keep in mind that if
+#   you've both a RSA and a DSA private key you can configure
+#   both in parallel (to also allow the use of DSA ciphers, etc.)
+SSLCertificateKeyFile /etc/pki/tls/private/localhost.key
+
+#   Server Certificate Chain:
+#   Point SSLCertificateChainFile at a file containing the
+#   concatenation of PEM encoded CA certificates which form the
+#   certificate chain for the server certificate. Alternatively
+#   the referenced file can be the same as SSLCertificateFile
+#   when the CA certificates are directly appended to the server
+#   certificate for convinience.
+#SSLCertificateChainFile /etc/pki/tls/certs/server-chain.crt
+
+#   Certificate Authority (CA):
+#   Set the CA certificate verification path where to find CA
+#   certificates for client authentication or alternatively one
+#   huge file containing all of them (file must be PEM encoded)
+#SSLCACertificateFile /etc/pki/tls/certs/ca-bundle.crt
+
+#   Client Authentication (Type):
+#   Client certificate verification type and depth.  Types are
+#   none, optional, require and optional_no_ca.  Depth is a
+#   number which specifies how deeply to verify the certificate
+#   issuer chain before deciding the certificate is not valid.
+#SSLVerifyClient require
+#SSLVerifyDepth  10
+
+#   Access Control:
+#   With SSLRequire you can do per-directory access control based
+#   on arbitrary complex boolean expressions containing server
+#   variable checks and other lookup directives.  The syntax is a
+#   mixture between C and Perl.  See the mod_ssl documentation
+#   for more details.
+#<Location />
+#SSLRequire (    %{SSL_CIPHER} !~ m/^(EXP|NULL)/ \
+#            and %{SSL_CLIENT_S_DN_O} eq "Snake Oil, Ltd." \
+#            and %{SSL_CLIENT_S_DN_OU} in {"Staff", "CA", "Dev"} \
+#            and %{TIME_WDAY} >= 1 and %{TIME_WDAY} <= 5 \
+#            and %{TIME_HOUR} >= 8 and %{TIME_HOUR} <= 20       ) \
+#           or %{REMOTE_ADDR} =~ m/^192\.76\.162\.[0-9]+$/
+#</Location>
+
+#   SSL Engine Options:
+#   Set various options for the SSL engine.
+#   o FakeBasicAuth:
+#     Translate the client X.509 into a Basic Authorisation.  This means that
+#     the standard Auth/DBMAuth methods can be used for access control.  The
+#     user name is the `one line' version of the client's X.509 certificate.
+#     Note that no password is obtained from the user. Every entry in the user
+#     file needs this password: `xxj31ZMTZzkVA'.
+#   o ExportCertData:
+#     This exports two additional environment variables: SSL_CLIENT_CERT and
+#     SSL_SERVER_CERT. These contain the PEM-encoded certificates of the
+#     server (always existing) and the client (only existing when client
+#     authentication is used). This can be used to import the certificates
+#     into CGI scripts.
+#   o StdEnvVars:
+#     This exports the standard SSL/TLS related `SSL_*' environment variables.
+#     Per default this exportation is switched off for performance reasons,
+#     because the extraction step is an expensive operation and is usually
+#     useless for serving static content. So one usually enables the
+#     exportation for CGI and SSI requests only.
+#   o StrictRequire:
+#     This denies access when "SSLRequireSSL" or "SSLRequire" applied even
+#     under a "Satisfy any" situation, i.e. when it applies access is denied
+#     and no other module can change it.
+#   o OptRenegotiate:
+#     This enables optimized SSL connection renegotiation handling when SSL
+#     directives are used in per-directory context. 
+#SSLOptions +FakeBasicAuth +ExportCertData +StrictRequire
+<Files ~ "\.(cgi|shtml|phtml|php3?)$">
+    SSLOptions +StdEnvVars
+</Files>
+<Directory "/var/www/cgi-bin">
+    SSLOptions +StdEnvVars
+</Directory>
+
+#   SSL Protocol Adjustments:
+#   The safe and default but still SSL/TLS standard compliant shutdown
+#   approach is that mod_ssl sends the close notify alert but doesn't wait for
+#   the close notify alert from client. When you need a different shutdown
+#   approach you can use one of the following variables:
+#   o ssl-unclean-shutdown:
+#     This forces an unclean shutdown when the connection is closed, i.e. no
+#     SSL close notify alert is send or allowed to received.  This violates
+#     the SSL/TLS standard but is needed for some brain-dead browsers. Use
+#     this when you receive I/O errors because of the standard approach where
+#     mod_ssl sends the close notify alert.
+#   o ssl-accurate-shutdown:
+#     This forces an accurate shutdown when the connection is closed, i.e. a
+#     SSL close notify alert is send and mod_ssl waits for the close notify
+#     alert of the client. This is 100% SSL/TLS standard compliant, but in
+#     practice often causes hanging connections with brain-dead browsers. Use
+#     this only for browsers where you know that their SSL implementation
+#     works correctly. 
+#   Notice: Most problems of broken clients are also related to the HTTP
+#   keep-alive facility, so you usually additionally want to disable
+#   keep-alive for those clients, too. Use variable "nokeepalive" for this.
+#   Similarly, one has to force some clients to use HTTP/1.0 to workaround
+#   their broken HTTP/1.1 implementation. Use variables "downgrade-1.0" and
+#   "force-response-1.0" for this.
+SetEnvIf User-Agent ".*MSIE.*" \
+         nokeepalive ssl-unclean-shutdown \
+         downgrade-1.0 force-response-1.0
+
+#   Per-Server Logging:
+#   The home of a custom SSL log file. Use this when you want a
+#   compact non-error SSL logfile on a virtual host basis.
+CustomLog logs/ssl_request_log \
+          "%t %h %{SSL_PROTOCOL}x %{SSL_CIPHER}x \"%r\" %b"
+
+</VirtualHost>                                  
+
diff --git a/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf.d/test.example.com.conf b/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf.d/test.example.com.conf
new file mode 100644
index 000000000..3dd7b18f1
--- /dev/null
+++ b/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf.d/test.example.com.conf
@@ -0,0 +1,7 @@
+<VirtualHost *:80>
+    ServerName test.example.com
+    ServerAdmin webmaster@dummy-host.example.com
+    DocumentRoot /var/www/htdocs
+    ErrorLog logs/dummy-host.example.com-error_log
+    CustomLog logs/dummy-host.example.com-access_log common
+</VirtualHost>
diff --git a/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf.d/welcome.conf b/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf.d/welcome.conf
new file mode 100644
index 000000000..c1d23c512
--- /dev/null
+++ b/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf.d/welcome.conf
@@ -0,0 +1,11 @@
+# 
+# This configuration file enables the default "Welcome"
+# page if there is no default index page present for
+# the root URL.  To disable the Welcome page, comment
+# out all the lines below.
+#
+<LocationMatch "^/+$">
+    Options -Indexes
+    ErrorDocument 403 /error/noindex.html
+</LocationMatch>
+
diff --git a/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf/httpd.conf b/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf/httpd.conf
new file mode 100644
index 000000000..579d194ce
--- /dev/null
+++ b/certbot-apache/certbot_apache/tests/testdata/centos6_apache/apache/httpd/conf/httpd.conf
@@ -0,0 +1,1009 @@
+#
+# This is the main Apache server configuration file.  It contains the
+# configuration directives that give the server its instructions.
+# See <URL:http://httpd.apache.org/docs/2.2/> for detailed information.
+# In particular, see
+# <URL:http://httpd.apache.org/docs/2.2/mod/directives.html>
+# for a discussion of each configuration directive.
+#
+#
+# Do NOT simply read the instructions in here without understanding
+# what they do.  They're here only as hints or reminders.  If you are unsure
+# consult the online docs. You have been warned.  
+#
+# The configuration directives are grouped into three basic sections:
+#  1. Directives that control the operation of the Apache server process as a
+#     whole (the 'global environment').
+#  2. Directives that define the parameters of the 'main' or 'default' server,
+#     which responds to requests that aren't handled by a virtual host.
+#     These directives also provide default values for the settings
+#     of all virtual hosts.
+#  3. Settings for virtual hosts, which allow Web requests to be sent to
+#     different IP addresses or hostnames and have them handled by the
+#     same Apache server process.
+#
+# Configuration and logfile names: If the filenames you specify for many
+# of the server's control files begin with "/" (or "drive:/" for Win32), the
+# server will use that explicit path.  If the filenames do *not* begin
+# with "/", the value of ServerRoot is prepended -- so "logs/foo.log"
+# with ServerRoot set to "/etc/httpd" will be interpreted by the
+# server as "/etc/httpd/logs/foo.log".
+#
+
+### Section 1: Global Environment
+#
+# The directives in this section affect the overall operation of Apache,
+# such as the number of concurrent requests it can handle or where it
+# can find its configuration files.
+#
+
+#
+# Don't give away too much information about all the subcomponents
+# we are running.  Comment out this line if you don't mind remote sites
+# finding out what major optional modules you are running
+ServerTokens OS
+
+#
+# ServerRoot: The top of the directory tree under which the server's
+# configuration, error, and log files are kept.
+#
+# NOTE!  If you intend to place this on an NFS (or otherwise network)
+# mounted filesystem then please read the LockFile documentation
+# (available at <URL:http://httpd.apache.org/docs/2.2/mod/mpm_common.html#lockfile>);
+# you will save yourself a lot of trouble.
+#
+# Do NOT add a slash at the end of the directory path.
+#
+ServerRoot "/etc/httpd"
+
+#
+# PidFile: The file in which the server should record its process
+# identification number when it starts.  Note the PIDFILE variable in
+# /etc/sysconfig/httpd must be set appropriately if this location is
+# changed.
+#
+PidFile run/httpd.pid
+
+#
+# Timeout: The number of seconds before receives and sends time out.
+#
+Timeout 60
+
+#
+# KeepAlive: Whether or not to allow persistent connections (more than
+# one request per connection). Set to "Off" to deactivate.
+#
+KeepAlive Off
+
+#
+# MaxKeepAliveRequests: The maximum number of requests to allow
+# during a persistent connection. Set to 0 to allow an unlimited amount.
+# We recommend you leave this number high, for maximum performance.
+#
+MaxKeepAliveRequests 100
+
+#
+# KeepAliveTimeout: Number of seconds to wait for the next request from the
+# same client on the same connection.
+#
+KeepAliveTimeout 15
+
+##
+## Server-Pool Size Regulation (MPM specific)
+## 
+
+# prefork MPM
+# StartServers: number of server processes to start
+# MinSpareServers: minimum number of server processes which are kept spare
+# MaxSpareServers: maximum number of server processes which are kept spare
+# ServerLimit: maximum value for MaxClients for the lifetime of the server
+# MaxClients: maximum number of server processes allowed to start
+# MaxRequestsPerChild: maximum number of requests a server process serves
+<IfModule prefork.c>
+StartServers       8
+MinSpareServers    5
+MaxSpareServers   20
+ServerLimit      256
+MaxClients       256
+MaxRequestsPerChild  4000
+</IfModule>
+
+# worker MPM
+# StartServers: initial number of server processes to start
+# MaxClients: maximum number of simultaneous client connections
+# MinSpareThreads: minimum number of worker threads which are kept spare
+# MaxSpareThreads: maximum number of worker threads which are kept spare
+# ThreadsPerChild: constant number of worker threads in each server process
+# MaxRequestsPerChild: maximum number of requests a server process serves
+<IfModule worker.c>
+StartServers         4
+MaxClients         300
+MinSpareThreads     25
+MaxSpareThreads     75 
+ThreadsPerChild     25
+MaxRequestsPerChild  0
+</IfModule>
+
+#
+# Listen: Allows you to bind Apache to specific IP addresses and/or
+# ports, in addition to the default. See also the <VirtualHost>
+# directive.
+#
+# Change this to Listen on specific IP addresses as shown below to 
+# prevent Apache from glomming onto all bound IP addresses (0.0.0.0)
+#
+#Listen 12.34.56.78:80
+Listen 80
+
+#
+# Dynamic Shared Object (DSO) Support
+#
+# To be able to use the functionality of a module which was built as a DSO you
+# have to place corresponding `LoadModule' lines at this location so the
+# directives contained in it are actually available _before_ they are used.
+# Statically compiled modules (those listed by `httpd -l') do not need
+# to be loaded here.
+#
+# Example:
+# LoadModule foo_module modules/mod_foo.so
+#
+LoadModule auth_basic_module modules/mod_auth_basic.so
+LoadModule auth_digest_module modules/mod_auth_digest.so
+LoadModule authn_file_module modules/mod_authn_file.so
+LoadModule authn_alias_module modules/mod_authn_alias.so
+LoadModule authn_anon_module modules/mod_authn_anon.so
+LoadModule authn_dbm_module modules/mod_authn_dbm.so
+LoadModule authn_default_module modules/mod_authn_default.so
+LoadModule authz_host_module modules/mod_authz_host.so
+LoadModule authz_user_module modules/mod_authz_user.so
+LoadModule authz_owner_module modules/mod_authz_owner.so
+LoadModule authz_groupfile_module modules/mod_authz_groupfile.so
+LoadModule authz_dbm_module modules/mod_authz_dbm.so
+LoadModule authz_default_module modules/mod_authz_default.so
+LoadModule ldap_module modules/mod_ldap.so
+LoadModule authnz_ldap_module modules/mod_authnz_ldap.so
+LoadModule include_module modules/mod_include.so
+LoadModule log_config_module modules/mod_log_config.so
+LoadModule logio_module modules/mod_logio.so
+LoadModule env_module modules/mod_env.so
+LoadModule ext_filter_module modules/mod_ext_filter.so
+LoadModule mime_magic_module modules/mod_mime_magic.so
+LoadModule expires_module modules/mod_expires.so
+LoadModule deflate_module modules/mod_deflate.so
+LoadModule headers_module modules/mod_headers.so
+LoadModule usertrack_module modules/mod_usertrack.so
+LoadModule setenvif_module modules/mod_setenvif.so
+LoadModule mime_module modules/mod_mime.so
+LoadModule dav_module modules/mod_dav.so
+LoadModule status_module modules/mod_status.so
+LoadModule autoindex_module modules/mod_autoindex.so
+LoadModule info_module modules/mod_info.so
+LoadModule dav_fs_module modules/mod_dav_fs.so
+LoadModule vhost_alias_module modules/mod_vhost_alias.so
+LoadModule negotiation_module modules/mod_negotiation.so
+LoadModule dir_module modules/mod_dir.so
+LoadModule actions_module modules/mod_actions.so
+LoadModule speling_module modules/mod_speling.so
+LoadModule userdir_module modules/mod_userdir.so
+LoadModule alias_module modules/mod_alias.so
+LoadModule substitute_module modules/mod_substitute.so
+LoadModule rewrite_module modules/mod_rewrite.so
+LoadModule proxy_module modules/mod_proxy.so
+LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
+LoadModule proxy_ftp_module modules/mod_proxy_ftp.so
+LoadModule proxy_http_module modules/mod_proxy_http.so
+LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
+LoadModule proxy_connect_module modules/mod_proxy_connect.so
+LoadModule cache_module modules/mod_cache.so
+LoadModule suexec_module modules/mod_suexec.so
+LoadModule disk_cache_module modules/mod_disk_cache.so
+LoadModule cgi_module modules/mod_cgi.so
+LoadModule version_module modules/mod_version.so
+
+#
+# The following modules are not loaded by default:
+#
+#LoadModule asis_module modules/mod_asis.so
+#LoadModule authn_dbd_module modules/mod_authn_dbd.so
+#LoadModule cern_meta_module modules/mod_cern_meta.so
+#LoadModule cgid_module modules/mod_cgid.so
+#LoadModule dbd_module modules/mod_dbd.so
+#LoadModule dumpio_module modules/mod_dumpio.so
+#LoadModule filter_module modules/mod_filter.so
+#LoadModule ident_module modules/mod_ident.so
+#LoadModule log_forensic_module modules/mod_log_forensic.so
+#LoadModule unique_id_module modules/mod_unique_id.so
+#
+
+#
+# Load config files from the config directory "/etc/httpd/conf.d".
+#
+Include conf.d/*.conf
+
+#
+# ExtendedStatus controls whether Apache will generate "full" status
+# information (ExtendedStatus On) or just basic information (ExtendedStatus
+# Off) when the "server-status" handler is called. The default is Off.
+#
+#ExtendedStatus On
+
+#
+# If you wish httpd to run as a different user or group, you must run
+# httpd as root initially and it will switch.  
+#
+# User/Group: The name (or #number) of the user/group to run httpd as.
+#  . On SCO (ODT 3) use "User nouser" and "Group nogroup".
+#  . On HPUX you may not be able to use shared memory as nobody, and the
+#    suggested workaround is to create a user www and use that user.
+#  NOTE that some kernels refuse to setgid(Group) or semctl(IPC_SET)
+#  when the value of (unsigned)Group is above 60000; 
+#  don't use Group #-1 on these systems!
+#
+User apache
+Group apache
+
+### Section 2: 'Main' server configuration
+#
+# The directives in this section set up the values used by the 'main'
+# server, which responds to any requests that aren't handled by a
+# <VirtualHost> definition.  These values also provide defaults for
+# any <VirtualHost> containers you may define later in the file.
+#
+# All of these directives may appear inside <VirtualHost> containers,
+# in which case these default settings will be overridden for the
+# virtual host being defined.
+#
+
+#
+# ServerAdmin: Your address, where problems with the server should be
+# e-mailed.  This address appears on some server-generated pages, such
+# as error documents.  e.g. admin@your-domain.com
+#
+ServerAdmin root@localhost
+
+#
+# ServerName gives the name and port that the server uses to identify itself.
+# This can often be determined automatically, but we recommend you specify
+# it explicitly to prevent problems during startup.
+#
+# If this is not set to valid DNS name for your host, server-generated
+# redirections will not work.  See also the UseCanonicalName directive.
+#
+# If your host doesn't have a registered DNS name, enter its IP address here.
+# You will have to access it by its address anyway, and this will make 
+# redirections work in a sensible way.
+#
+#ServerName www.example.com:80
+
+#
+# UseCanonicalName: Determines how Apache constructs self-referencing 
+# URLs and the SERVER_NAME and SERVER_PORT variables.
+# When set "Off", Apache will use the Hostname and Port supplied
+# by the client.  When set "On", Apache will use the value of the
+# ServerName directive.
+#
+UseCanonicalName Off
+
+#
+# DocumentRoot: The directory out of which you will serve your
+# documents. By default, all requests are taken from this directory, but
+# symbolic links and aliases may be used to point to other locations.
+#
+DocumentRoot "/var/www/html"
+
+#
+# Each directory to which Apache has access can be configured with respect
+# to which services and features are allowed and/or disabled in that
+# directory (and its subdirectories). 
+#
+# First, we configure the "default" to be a very restrictive set of 
+# features.  
+#
+<Directory />
+    Options FollowSymLinks
+    AllowOverride None
+</Directory>
+
+#
+# Note that from this point forward you must specifically allow
+# particular features to be enabled - so if something's not working as
+# you might expect, make sure that you have specifically enabled it
+# below.
+#
+
+#
+# This should be changed to whatever you set DocumentRoot to.
+#
+<Directory "/var/www/html">
+
+#
+# Possible values for the Options directive are "None", "All",
+# or any combination of:
+#   Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews
+#
+# Note that "MultiViews" must be named *explicitly* --- "Options All"
+# doesn't give it to you.
+#
+# The Options directive is both complicated and important.  Please see
+# http://httpd.apache.org/docs/2.2/mod/core.html#options
+# for more information.
+#
+    Options Indexes FollowSymLinks
+
+#
+# AllowOverride controls what directives may be placed in .htaccess files.
+# It can be "All", "None", or any combination of the keywords:
+#   Options FileInfo AuthConfig Limit
+#
+    AllowOverride None
+
+#
+# Controls who can get stuff from this server.
+#
+    Order allow,deny
+    Allow from all
+
+</Directory>
+
+#
+# UserDir: The name of the directory that is appended onto a user's home
+# directory if a ~user request is received.
+#
+# The path to the end user account 'public_html' directory must be
+# accessible to the webserver userid.  This usually means that ~userid
+# must have permissions of 711, ~userid/public_html must have permissions
+# of 755, and documents contained therein must be world-readable.
+# Otherwise, the client will only receive a "403 Forbidden" message.
+#
+# See also: http://httpd.apache.org/docs/misc/FAQ.html#forbidden
+#
+<IfModule mod_userdir.c>
+    #
+    # UserDir is disabled by default since it can confirm the presence
+    # of a username on the system (depending on home directory
+    # permissions).
+    #
+    UserDir disabled
+
+    #
+    # To enable requests to /~user/ to serve the user's public_html
+    # directory, remove the "UserDir disabled" line above, and uncomment
+    # the following line instead:
+    # 
+    #UserDir public_html
+
+</IfModule>
+
+#
+# Control access to UserDir directories.  The following is an example
+# for a site where these directories are restricted to read-only.
+#
+#<Directory /home/*/public_html>
+#    AllowOverride FileInfo AuthConfig Limit
+#    Options MultiViews Indexes SymLinksIfOwnerMatch IncludesNoExec
+#    <Limit GET POST OPTIONS>
+#        Order allow,deny
+#        Allow from all
+#    </Limit>
+#    <LimitExcept GET POST OPTIONS>
+#        Order deny,allow
+#        Deny from all
+#    </LimitExcept>
+#</Directory>
+
+#
+# DirectoryIndex: sets the file that Apache will serve if a directory
+# is requested.
+#
+# The index.html.var file (a type-map) is used to deliver content-
+# negotiated documents.  The MultiViews Option can be used for the 
+# same purpose, but it is much slower.
+#
+DirectoryIndex index.html index.html.var
+
+#
+# AccessFileName: The name of the file to look for in each directory
+# for additional configuration directives.  See also the AllowOverride
+# directive.
+#
+AccessFileName .htaccess
+
+#
+# The following lines prevent .htaccess and .htpasswd files from being 
+# viewed by Web clients. 
+#
+<Files ~ "^\.ht">
+    Order allow,deny
+    Deny from all
+    Satisfy All
+</Files>
+
+#
+# TypesConfig describes where the mime.types file (or equivalent) is
+# to be found.
+#
+TypesConfig /etc/mime.types
+
+#
+# DefaultType is the default MIME type the server will use for a document
+# if it cannot otherwise determine one, such as from filename extensions.
+# If your server contains mostly text or HTML documents, "text/plain" is
+# a good value.  If most of your content is binary, such as applications
+# or images, you may want to use "application/octet-stream" instead to
+# keep browsers from trying to display binary files as though they are
+# text.
+#
+DefaultType text/plain
+
+#
+# The mod_mime_magic module allows the server to use various hints from the
+# contents of the file itself to determine its type.  The MIMEMagicFile
+# directive tells the module where the hint definitions are located.
+#
+<IfModule mod_mime_magic.c>
+#   MIMEMagicFile /usr/share/magic.mime
+    MIMEMagicFile conf/magic
+</IfModule>
+
+#
+# HostnameLookups: Log the names of clients or just their IP addresses
+# e.g., www.apache.org (on) or 204.62.129.132 (off).
+# The default is off because it'd be overall better for the net if people
+# had to knowingly turn this feature on, since enabling it means that
+# each client request will result in AT LEAST one lookup request to the
+# nameserver.
+#
+HostnameLookups Off
+
+#
+# EnableMMAP: Control whether memory-mapping is used to deliver
+# files (assuming that the underlying OS supports it).
+# The default is on; turn this off if you serve from NFS-mounted 
+# filesystems.  On some systems, turning it off (regardless of
+# filesystem) can improve performance; for details, please see
+# http://httpd.apache.org/docs/2.2/mod/core.html#enablemmap
+#
+#EnableMMAP off
+
+#
+# EnableSendfile: Control whether the sendfile kernel support is 
+# used to deliver files (assuming that the OS supports it). 
+# The default is on; turn this off if you serve from NFS-mounted 
+# filesystems.  Please see
+# http://httpd.apache.org/docs/2.2/mod/core.html#enablesendfile
+#
+#EnableSendfile off
+
+#
+# ErrorLog: The location of the error log file.
+# If you do not specify an ErrorLog directive within a <VirtualHost>
+# container, error messages relating to that virtual host will be
+# logged here.  If you *do* define an error logfile for a <VirtualHost>
+# container, that host's errors will be logged there and not here.
+#
+ErrorLog logs/error_log
+
+#
+# LogLevel: Control the number of messages logged to the error_log.
+# Possible values include: debug, info, notice, warn, error, crit,
+# alert, emerg.
+#
+LogLevel warn
+
+#
+# The following directives define some format nicknames for use with
+# a CustomLog directive (see below).
+#
+LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
+LogFormat "%h %l %u %t \"%r\" %>s %b" common
+LogFormat "%{Referer}i -> %U" referer
+LogFormat "%{User-agent}i" agent
+
+# "combinedio" includes actual counts of actual bytes received (%I) and sent (%O); this
+# requires the mod_logio module to be loaded.
+#LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio
+
+#
+# The location and format of the access logfile (Common Logfile Format).
+# If you do not define any access logfiles within a <VirtualHost>
+# container, they will be logged here.  Contrariwise, if you *do*
+# define per-<VirtualHost> access logfiles, transactions will be
+# logged therein and *not* in this file.
+#
+#CustomLog logs/access_log common
+
+#
+# If you would like to have separate agent and referer logfiles, uncomment
+# the following directives.
+#
+#CustomLog logs/referer_log referer
+#CustomLog logs/agent_log agent
+
+#
+# For a single logfile with access, agent, and referer information
+# (Combined Logfile Format), use the following directive:
+#
+CustomLog logs/access_log combined
+
+#
+# Optionally add a line containing the server version and virtual host
+# name to server-generated pages (internal error documents, FTP directory
+# listings, mod_status and mod_info output etc., but not CGI generated
+# documents or custom error documents).
+# Set to "EMail" to also include a mailto: link to the ServerAdmin.
+# Set to one of:  On | Off | EMail
+#
+ServerSignature On
+
+#
+# Aliases: Add here as many aliases as you need (with no limit). The format is 
+# Alias fakename realname
+#
+# Note that if you include a trailing / on fakename then the server will
+# require it to be present in the URL.  So "/icons" isn't aliased in this
+# example, only "/icons/".  If the fakename is slash-terminated, then the 
+# realname must also be slash terminated, and if the fakename omits the 
+# trailing slash, the realname must also omit it.
+#
+# We include the /icons/ alias for FancyIndexed directory listings.  If you
+# do not use FancyIndexing, you may comment this out.
+#
+Alias /icons/ "/var/www/icons/"
+
+<Directory "/var/www/icons">
+    Options Indexes MultiViews FollowSymLinks
+    AllowOverride None
+    Order allow,deny
+    Allow from all
+</Directory>
+
+#
+# WebDAV module configuration section.
+# 
+<IfModule mod_dav_fs.c>
+    # Location of the WebDAV lock database.
+    DAVLockDB /var/lib/dav/lockdb
+</IfModule>
+
+#
+# ScriptAlias: This controls which directories contain server scripts.
+# ScriptAliases are essentially the same as Aliases, except that
+# documents in the realname directory are treated as applications and
+# run by the server when requested rather than as documents sent to the client.
+# The same rules about trailing "/" apply to ScriptAlias directives as to
+# Alias.
+#
+ScriptAlias /cgi-bin/ "/var/www/cgi-bin/"
+
+#
+# "/var/www/cgi-bin" should be changed to whatever your ScriptAliased
+# CGI directory exists, if you have that configured.
+#
+<Directory "/var/www/cgi-bin">
+    AllowOverride None
+    Options None
+    Order allow,deny
+    Allow from all
+</Directory>
+
+#
+# Redirect allows you to tell clients about documents which used to exist in
+# your server's namespace, but do not anymore. This allows you to tell the
+# clients where to look for the relocated document.
+# Example:
+# Redirect permanent /foo http://www.example.com/bar
+
+#
+# Directives controlling the display of server-generated directory listings.
+#
+
+#
+# IndexOptions: Controls the appearance of server-generated directory
+# listings.
+#
+IndexOptions FancyIndexing VersionSort NameWidth=* HTMLTable Charset=UTF-8
+
+#
+# AddIcon* directives tell the server which icon to show for different
+# files or filename extensions.  These are only displayed for
+# FancyIndexed directories.
+#
+AddIconByEncoding (CMP,/icons/compressed.gif) x-compress x-gzip
+
+AddIconByType (TXT,/icons/text.gif) text/*
+AddIconByType (IMG,/icons/image2.gif) image/*
+AddIconByType (SND,/icons/sound2.gif) audio/*
+AddIconByType (VID,/icons/movie.gif) video/*
+
+AddIcon /icons/binary.gif .bin .exe
+AddIcon /icons/binhex.gif .hqx
+AddIcon /icons/tar.gif .tar
+AddIcon /icons/world2.gif .wrl .wrl.gz .vrml .vrm .iv
+AddIcon /icons/compressed.gif .Z .z .tgz .gz .zip
+AddIcon /icons/a.gif .ps .ai .eps
+AddIcon /icons/layout.gif .html .shtml .htm .pdf
+AddIcon /icons/text.gif .txt
+AddIcon /icons/c.gif .c
+AddIcon /icons/p.gif .pl .py
+AddIcon /icons/f.gif .for
+AddIcon /icons/dvi.gif .dvi
+AddIcon /icons/uuencoded.gif .uu
+AddIcon /icons/script.gif .conf .sh .shar .csh .ksh .tcl
+AddIcon /icons/tex.gif .tex
+AddIcon /icons/bomb.gif /core
+
+AddIcon /icons/back.gif ..
+AddIcon /icons/hand.right.gif README
+AddIcon /icons/folder.gif ^^DIRECTORY^^
+AddIcon /icons/blank.gif ^^BLANKICON^^
+
+#
+# DefaultIcon is which icon to show for files which do not have an icon
+# explicitly set.
+#
+DefaultIcon /icons/unknown.gif
+
+#
+# AddDescription allows you to place a short description after a file in
+# server-generated indexes.  These are only displayed for FancyIndexed
+# directories.
+# Format: AddDescription "description" filename
+#
+#AddDescription "GZIP compressed document" .gz
+#AddDescription "tar archive" .tar
+#AddDescription "GZIP compressed tar archive" .tgz
+
+#
+# ReadmeName is the name of the README file the server will look for by
+# default, and append to directory listings.
+#
+# HeaderName is the name of a file which should be prepended to
+# directory indexes. 
+ReadmeName README.html
+HeaderName HEADER.html
+
+#
+# IndexIgnore is a set of filenames which directory indexing should ignore
+# and not include in the listing.  Shell-style wildcarding is permitted.
+#
+IndexIgnore .??* *~ *# HEADER* README* RCS CVS *,v *,t
+
+#
+# DefaultLanguage and AddLanguage allows you to specify the language of 
+# a document. You can then use content negotiation to give a browser a 
+# file in a language the user can understand.
+#
+# Specify a default language. This means that all data
+# going out without a specific language tag (see below) will 
+# be marked with this one. You probably do NOT want to set
+# this unless you are sure it is correct for all cases.
+#
+# * It is generally better to not mark a page as 
+# * being a certain language than marking it with the wrong
+# * language!
+#
+# DefaultLanguage nl
+#
+# Note 1: The suffix does not have to be the same as the language
+# keyword --- those with documents in Polish (whose net-standard
+# language code is pl) may wish to use "AddLanguage pl .po" to
+# avoid the ambiguity with the common suffix for perl scripts.
+#
+# Note 2: The example entries below illustrate that in some cases 
+# the two character 'Language' abbreviation is not identical to 
+# the two character 'Country' code for its country,
+# E.g. 'Danmark/dk' versus 'Danish/da'.
+#
+# Note 3: In the case of 'ltz' we violate the RFC by using a three char
+# specifier. There is 'work in progress' to fix this and get
+# the reference data for rfc1766 cleaned up.
+#
+# Catalan (ca) - Croatian (hr) - Czech (cs) - Danish (da) - Dutch (nl)
+# English (en) - Esperanto (eo) - Estonian (et) - French (fr) - German (de)
+# Greek-Modern (el) - Hebrew (he) - Italian (it) - Japanese (ja)
+# Korean (ko) - Luxembourgeois* (ltz) - Norwegian Nynorsk (nn)
+# Norwegian (no) - Polish (pl) - Portugese (pt)
+# Brazilian Portuguese (pt-BR) - Russian (ru) - Swedish (sv)
+# Simplified Chinese (zh-CN) - Spanish (es) - Traditional Chinese (zh-TW)
+#
+AddLanguage ca .ca
+AddLanguage cs .cz .cs
+AddLanguage da .dk
+AddLanguage de .de
+AddLanguage el .el
+AddLanguage en .en
+AddLanguage eo .eo
+AddLanguage es .es
+AddLanguage et .et
+AddLanguage fr .fr
+AddLanguage he .he
+AddLanguage hr .hr
+AddLanguage it .it
+AddLanguage ja .ja
+AddLanguage ko .ko
+AddLanguage ltz .ltz
+AddLanguage nl .nl
+AddLanguage nn .nn
+AddLanguage no .no
+AddLanguage pl .po
+AddLanguage pt .pt
+AddLanguage pt-BR .pt-br
+AddLanguage ru .ru
+AddLanguage sv .sv
+AddLanguage zh-CN .zh-cn
+AddLanguage zh-TW .zh-tw
+
+#
+# LanguagePriority allows you to give precedence to some languages
+# in case of a tie during content negotiation.
+#
+# Just list the languages in decreasing order of preference. We have
+# more or less alphabetized them here. You probably want to change this.
+#
+LanguagePriority en ca cs da de el eo es et fr he hr it ja ko ltz nl nn no pl pt pt-BR ru sv zh-CN zh-TW
+
+#
+# ForceLanguagePriority allows you to serve a result page rather than
+# MULTIPLE CHOICES (Prefer) [in case of a tie] or NOT ACCEPTABLE (Fallback)
+# [in case no accepted languages matched the available variants]
+#
+ForceLanguagePriority Prefer Fallback
+
+#
+# Specify a default charset for all content served; this enables
+# interpretation of all content as UTF-8 by default.  To use the 
+# default browser choice (ISO-8859-1), or to allow the META tags
+# in HTML content to override this choice, comment out this
+# directive:
+#
+AddDefaultCharset UTF-8
+
+#
+# AddType allows you to add to or override the MIME configuration
+# file mime.types for specific file types.
+#
+#AddType application/x-tar .tgz
+
+#
+# AddEncoding allows you to have certain browsers uncompress
+# information on the fly. Note: Not all browsers support this.
+# Despite the name similarity, the following Add* directives have nothing
+# to do with the FancyIndexing customization directives above.
+#
+#AddEncoding x-compress .Z
+#AddEncoding x-gzip .gz .tgz
+
+# If the AddEncoding directives above are commented-out, then you
+# probably should define those extensions to indicate media types:
+#
+AddType application/x-compress .Z
+AddType application/x-gzip .gz .tgz
+
+#
+#   MIME-types for downloading Certificates and CRLs
+#
+AddType application/x-x509-ca-cert .crt
+AddType application/x-pkcs7-crl    .crl
+
+#
+# AddHandler allows you to map certain file extensions to "handlers":
+# actions unrelated to filetype. These can be either built into the server
+# or added with the Action directive (see below)
+#
+# To use CGI scripts outside of ScriptAliased directories:
+# (You will also need to add "ExecCGI" to the "Options" directive.)
+#
+#AddHandler cgi-script .cgi
+
+#
+# For files that include their own HTTP headers:
+#
+#AddHandler send-as-is asis
+
+#
+# For type maps (negotiated resources):
+# (This is enabled by default to allow the Apache "It Worked" page
+#  to be distributed in multiple languages.)
+#
+AddHandler type-map var
+
+#
+# Filters allow you to process content before it is sent to the client.
+#
+# To parse .shtml files for server-side includes (SSI):
+# (You will also need to add "Includes" to the "Options" directive.)
+#
+AddType text/html .shtml
+AddOutputFilter INCLUDES .shtml
+
+#
+# Action lets you define media types that will execute a script whenever
+# a matching file is called. This eliminates the need for repeated URL
+# pathnames for oft-used CGI file processors.
+# Format: Action media/type /cgi-script/location
+# Format: Action handler-name /cgi-script/location
+#
+
+#
+# Customizable error responses come in three flavors:
+# 1) plain text 2) local redirects 3) external redirects
+#
+# Some examples:
+#ErrorDocument 500 "The server made a boo boo."
+#ErrorDocument 404 /missing.html
+#ErrorDocument 404 "/cgi-bin/missing_handler.pl"
+#ErrorDocument 402 http://www.example.com/subscription_info.html
+#
+
+#
+# Putting this all together, we can internationalize error responses.
+#
+# We use Alias to redirect any /error/HTTP_<error>.html.var response to
+# our collection of by-error message multi-language collections.  We use 
+# includes to substitute the appropriate text.
+#
+# You can modify the messages' appearance without changing any of the
+# default HTTP_<error>.html.var files by adding the line:
+#
+#   Alias /error/include/ "/your/include/path/"
+#
+# which allows you to create your own set of files by starting with the
+# /var/www/error/include/ files and
+# copying them to /your/include/path/, even on a per-VirtualHost basis.
+#
+
+Alias /error/ "/var/www/error/"
+
+<IfModule mod_negotiation.c>
+<IfModule mod_include.c>
+    <Directory "/var/www/error">
+        AllowOverride None
+        Options IncludesNoExec
+        AddOutputFilter Includes html
+        AddHandler type-map var
+        Order allow,deny
+        Allow from all
+        LanguagePriority en es de fr
+        ForceLanguagePriority Prefer Fallback
+    </Directory>
+
+#    ErrorDocument 400 /error/HTTP_BAD_REQUEST.html.var
+#    ErrorDocument 401 /error/HTTP_UNAUTHORIZED.html.var
+#    ErrorDocument 403 /error/HTTP_FORBIDDEN.html.var
+#    ErrorDocument 404 /error/HTTP_NOT_FOUND.html.var
+#    ErrorDocument 405 /error/HTTP_METHOD_NOT_ALLOWED.html.var
+#    ErrorDocument 408 /error/HTTP_REQUEST_TIME_OUT.html.var
+#    ErrorDocument 410 /error/HTTP_GONE.html.var
+#    ErrorDocument 411 /error/HTTP_LENGTH_REQUIRED.html.var
+#    ErrorDocument 412 /error/HTTP_PRECONDITION_FAILED.html.var
+#    ErrorDocument 413 /error/HTTP_REQUEST_ENTITY_TOO_LARGE.html.var
+#    ErrorDocument 414 /error/HTTP_REQUEST_URI_TOO_LARGE.html.var
+#    ErrorDocument 415 /error/HTTP_UNSUPPORTED_MEDIA_TYPE.html.var
+#    ErrorDocument 500 /error/HTTP_INTERNAL_SERVER_ERROR.html.var
+#    ErrorDocument 501 /error/HTTP_NOT_IMPLEMENTED.html.var
+#    ErrorDocument 502 /error/HTTP_BAD_GATEWAY.html.var
+#    ErrorDocument 503 /error/HTTP_SERVICE_UNAVAILABLE.html.var
+#    ErrorDocument 506 /error/HTTP_VARIANT_ALSO_VARIES.html.var
+
+</IfModule>
+</IfModule>
+
+#
+# The following directives modify normal HTTP response behavior to
+# handle known problems with browser implementations.
+#
+BrowserMatch "Mozilla/2" nokeepalive
+BrowserMatch "MSIE 4\.0b2;" nokeepalive downgrade-1.0 force-response-1.0
+BrowserMatch "RealPlayer 4\.0" force-response-1.0
+BrowserMatch "Java/1\.0" force-response-1.0
+BrowserMatch "JDK/1\.0" force-response-1.0
+
+#
+# The following directive disables redirects on non-GET requests for
+# a directory that does not include the trailing slash.  This fixes a 
+# problem with Microsoft WebFolders which does not appropriately handle 
+# redirects for folders with DAV methods.
+# Same deal with Apple's DAV filesystem and Gnome VFS support for DAV.
+#
+BrowserMatch "Microsoft Data Access Internet Publishing Provider" redirect-carefully
+BrowserMatch "MS FrontPage" redirect-carefully
+BrowserMatch "^WebDrive" redirect-carefully
+BrowserMatch "^WebDAVFS/1.[0123]" redirect-carefully
+BrowserMatch "^gnome-vfs/1.0" redirect-carefully
+BrowserMatch "^XML Spy" redirect-carefully
+BrowserMatch "^Dreamweaver-WebDAV-SCM1" redirect-carefully
+
+#
+# Allow server status reports generated by mod_status,
+# with the URL of http://servername/server-status
+# Change the ".example.com" to match your domain to enable.
+#
+#<Location /server-status>
+#    SetHandler server-status
+#    Order deny,allow
+#    Deny from all
+#    Allow from .example.com
+#</Location>
+
+#
+# Allow remote server configuration reports, with the URL of
+#  http://servername/server-info (requires that mod_info.c be loaded).
+# Change the ".example.com" to match your domain to enable.
+#
+#<Location /server-info>
+#    SetHandler server-info
+#    Order deny,allow
+#    Deny from all
+#    Allow from .example.com
+#</Location>
+
+#
+# Proxy Server directives. Uncomment the following lines to
+# enable the proxy server:
+#
+#<IfModule mod_proxy.c>
+#ProxyRequests On
+#
+#<Proxy *>
+#    Order deny,allow
+#    Deny from all
+#    Allow from .example.com
+#</Proxy>
+
+#
+# Enable/disable the handling of HTTP/1.1 "Via:" headers.
+# ("Full" adds the server version; "Block" removes all outgoing Via: headers)
+# Set to one of: Off | On | Full | Block
+#
+#ProxyVia On
+
+#
+# To enable a cache of proxied content, uncomment the following lines.
+# See http://httpd.apache.org/docs/2.2/mod/mod_cache.html for more details.
+#
+#<IfModule mod_disk_cache.c>
+#   CacheEnable disk /
+#   CacheRoot "/var/cache/mod_proxy"
+#</IfModule>
+#
+
+#</IfModule>
+# End of proxy directives.
+
+### Section 3: Virtual Hosts
+#
+# VirtualHost: If you want to maintain multiple domains/hostnames on your
+# machine you can setup VirtualHost containers for them. Most configurations
+# use only name-based virtual hosts so the server doesn't need to worry about
+# IP addresses. This is indicated by the asterisks in the directives below.
+#
+# Please see the documentation at 
+# <URL:http://httpd.apache.org/docs/2.2/vhosts/>
+# for further details before you try to setup virtual hosts.
+#
+# You may use the command line option '-S' to verify your virtual host
+# configuration.
+
+#
+# Use name-based virtual hosting.
+#
+#NameVirtualHost *:80
+#
+# NOTE: NameVirtualHost cannot be used without a port specifier 
+# (e.g. :80) if mod_ssl is being used, due to the nature of the
+# SSL protocol.
+#
+
+#
+# VirtualHost example:
+# Almost any Apache directive may go into a VirtualHost container.
+# The first VirtualHost section is used for requests without a known
+# server name.
+#
+#<VirtualHost *:80>
+#    ServerAdmin webmaster@dummy-host.example.com
+#    DocumentRoot /www/docs/dummy-host.example.com
+#    ServerName dummy-host.example.com
+#    ErrorLog logs/dummy-host.example.com-error_log
+#    CustomLog logs/dummy-host.example.com-access_log common
+#</VirtualHost>