From c517bae24deb45ee3c75e5a7ae9927a82217dccb Mon Sep 17 00:00:00 2001

From: Eric Garver <e@erig.me>

Date: Wed, 14 Nov 2018 11:42:17 -0500

Subject: [PATCH] remove ability to use nftables backend

---

 config/firewalld.conf                  |  7 -------

 configure.ac                           | 10 ----------

 doc/xml/firewalld.conf.xml             | 14 --------------

 doc/xml/firewalld.dbus.xml             | 10 ----------

 src/firewall/config/__init__.py.in     |  3 +--

 src/firewall/core/fw.py                |  5 -----

 src/firewall/core/io/firewalld_conf.py | 11 +----------

 src/firewall/server/config.py          | 19 +++----------------

 src/tests/dbus/firewalld.conf.at       |  6 +-----

 src/tests/functions.at                 |  5 +----

 src/tests/testsuite.at                 |  2 +-

 11 files changed, 8 insertions(+), 84 deletions(-)

diff --git a/config/firewalld.conf b/config/firewalld.conf

index b53c0aa50c53..63df409bf567 100644

--- a/config/firewalld.conf

+++ b/config/firewalld.conf

@@ -55,10 +55,3 @@ LogDenied=off

 # will be used. Possible values are: yes, no and system.

 # Default: system

 AutomaticHelpers=system

-

-# FirewallBackend

-# Selects the firewall backend implementation.

-# Choices are:

-#	- nftables (default)

-#	- iptables (iptables, ip6tables, ebtables and ipset)

-FirewallBackend=nftables

diff --git a/configure.ac b/configure.ac

index db9a39f92def..d1c365e29986 100644

--- a/configure.ac

+++ b/configure.ac

@@ -147,16 +147,6 @@ if test "x$IPSET" = "x"; then

 fi

 AC_SUBST(IPSET)

-AC_ARG_WITH([nft],

-       AS_HELP_STRING([--with-nft], [Path to nft (nftables) executable]),

-       [NFT=$withval

-       AC_MSG_NOTICE([Using for nft: $NFT])],

-       [AC_PATH_PROG([NFT], [nft], [], [$FW_TOOLS_PATH])])

-if test "x$NFT" = "x"; then

-    AC_MSG_ERROR([nft was not found in $FW_TOOLS_PATH])

-fi

-AC_SUBST(NFT)

-

 #############################################################

 AC_SUBST([GETTEXT_PACKAGE], '[PKG_NAME]')

diff --git a/doc/xml/firewalld.conf.xml b/doc/xml/firewalld.conf.xml

index df4b9521fd71..afb94b90937f 100644

--- a/doc/xml/firewalld.conf.xml

+++ b/doc/xml/firewalld.conf.xml

@@ -144,20 +144,6 @@

 	</listitem>

       </varlistentry>

-        <varlistentry>

-            <term><option>FirewallBackend</option></term>

-            <listitem>

-                <para>

-                Selects the firewall backend implementation. Possible values

-                are; <replaceable>nftables</replaceable> (default), or

-                <replaceable>iptables</replaceable>. This applies to all

-                firewalld primitives. The only exception is direct and

-                passthrough rules which always use the traditional iptables,

-                ip6tables, and ebtables backends.

-                </para>

-	        </listitem>

-        </varlistentry>

-

     </variablelist>

   </refsect1>

diff --git a/doc/xml/firewalld.dbus.xml b/doc/xml/firewalld.dbus.xml

index 8352f96cc057..ec82d4cad077 100644

--- a/doc/xml/firewalld.dbus.xml

+++ b/doc/xml/firewalld.dbus.xml

@@ -2582,16 +2582,6 @@

               </para>

             </listitem>

           </varlistentry>

-          <varlistentry id="FirewallD1.config.Properties.FirewallBackend">

-            <term>FirewallBackend - s - (rw)</term>

-            <listitem>

-              <para>

-                Selects the firewalld backend for all rules except the direct

-                interface. Valid options are; nftables, iptables. Default in

-                nftables.

-              </para>

-            </listitem>

-          </varlistentry>

           <varlistentry id="FirewallD1.config.Properties.IPv6_rpfilter">

             <term><parameter>IPv6_rpfilter</parameter> - s - (rw)</term>

             <listitem><para>Indicates whether the reverse path filter test on a packet for IPv6 is enabled. If a reply to the packet would be sent via the same interface that the packet arrived on, the packet will match and be accepted, otherwise dropped.</para></listitem>

diff --git a/src/firewall/config/__init__.py.in b/src/firewall/config/__init__.py.in

index 955be32077e1..20e4979062d8 100644

--- a/src/firewall/config/__init__.py.in

+++ b/src/firewall/config/__init__.py.in

@@ -118,7 +118,6 @@ COMMANDS = {

 LOG_DENIED_VALUES = [ "all", "unicast", "broadcast", "multicast", "off" ]

 AUTOMATIC_HELPERS_VALUES = [ "yes", "no", "system" ]

-FIREWALL_BACKEND_VALUES = [ "nftables", "iptables" ]

 # fallbacks: will be overloaded by firewalld.conf

 FALLBACK_ZONE = "public"

@@ -129,4 +128,4 @@ FALLBACK_IPV6_RPFILTER = True

 FALLBACK_INDIVIDUAL_CALLS = False

 FALLBACK_LOG_DENIED = "off"

 FALLBACK_AUTOMATIC_HELPERS = "system"

-FALLBACK_FIREWALL_BACKEND = "nftables"

+FALLBACK_FIREWALL_BACKEND = "iptables"

diff --git a/src/firewall/core/fw.py b/src/firewall/core/fw.py

index 9be13a5c1313..abb25f0c3e72 100644

--- a/src/firewall/core/fw.py

+++ b/src/firewall/core/fw.py

@@ -293,11 +293,6 @@ class Firewall(object):

                     log.debug1("AutomaticHelpers is set to '%s'",

                                self._automatic_helpers)

-            if self._firewalld_conf.get("FirewallBackend"):

-                self._firewall_backend = self._firewalld_conf.get("FirewallBackend")

-                log.debug1("FirewallBackend is set to '%s'",

-                           self._firewall_backend)

-

         self.config.set_firewalld_conf(copy.deepcopy(self._firewalld_conf))

         self._select_firewall_backend(self._firewall_backend)

diff --git a/src/firewall/core/io/firewalld_conf.py b/src/firewall/core/io/firewalld_conf.py

index 4d57bad693c1..9aee2dc6f9b7 100644

--- a/src/firewall/core/io/firewalld_conf.py

+++ b/src/firewall/core/io/firewalld_conf.py

@@ -30,7 +30,7 @@ from firewall.functions import b2u, u2b, PY2

 valid_keys = [ "DefaultZone", "MinimalMark", "CleanupOnExit", "Lockdown", 

                "IPv6_rpfilter", "IndividualCalls", "LogDenied",

-               "AutomaticHelpers", "FirewallBackend" ]

+               "AutomaticHelpers" ]

 class firewalld_conf(object):

     def __init__(self, filename):

@@ -79,7 +79,6 @@ class firewalld_conf(object):

             self.set("IndividualCalls", "yes" if config.FALLBACK_INDIVIDUAL_CALLS else "no")

             self.set("LogDenied", config.FALLBACK_LOG_DENIED)

             self.set("AutomaticHelpers", config.FALLBACK_AUTOMATIC_HELPERS)

-            self.set("FirewallBackend", config.FALLBACK_FIREWALL_BACKEND)

             raise

         for line in f:

@@ -175,14 +174,6 @@ class firewalld_conf(object):

                             config.FALLBACK_AUTOMATIC_HELPERS)

             self.set("AutomaticHelpers", str(config.FALLBACK_AUTOMATIC_HELPERS))

-        value = self.get("FirewallBackend")

-        if not value or value.lower() not in config.FIREWALL_BACKEND_VALUES:

-            if value is not None:

-                log.warning("FirewallBackend '%s' is not valid, using default "

-                            "value %s", value if value else '',

-                            config.FALLBACK_FIREWALL_BACKEND)

-            self.set("FirewallBackend", str(config.FALLBACK_FIREWALL_BACKEND))

-

     # save to self.filename if there are key/value changes

     def write(self):

         if len(self._config) < 1:

diff --git a/src/firewall/server/config.py b/src/firewall/server/config.py

index dfc562b537eb..011052a9cabf 100644

--- a/src/firewall/server/config.py

+++ b/src/firewall/server/config.py

@@ -105,7 +105,6 @@ class FirewallDConfig(slip.dbus.service.Object):

                                                 "IndividualCalls": "readwrite",

                                                 "LogDenied": "readwrite",

                                                 "AutomaticHelpers": "readwrite",

-                                                "FirewallBackend": "readwrite",

                                               })

     @handle_exceptions

@@ -485,7 +484,7 @@ class FirewallDConfig(slip.dbus.service.Object):

     def _get_property(self, prop):

         if prop not in [ "DefaultZone", "MinimalMark", "CleanupOnExit",

                          "Lockdown", "IPv6_rpfilter", "IndividualCalls",

-                         "LogDenied", "AutomaticHelpers", "FirewallBackend" ]:

+                         "LogDenied", "AutomaticHelpers" ]:

             raise dbus.exceptions.DBusException(

                 "org.freedesktop.DBus.Error.InvalidArgs: "

                 "Property '%s' does not exist" % prop)

@@ -526,10 +525,6 @@ class FirewallDConfig(slip.dbus.service.Object):

             if value is None:

                 value = config.FALLBACK_AUTOMATIC_HELPERS

             return dbus.String(value)

-        elif prop == "FirewallBackend":

-            if value is None:

-                value = config.FALLBACK_FIREWALL_BACKEND

-            return dbus.String(value)

     @dbus_handle_exceptions

     def _get_dbus_property(self, prop):

@@ -549,8 +544,6 @@ class FirewallDConfig(slip.dbus.service.Object):

             return dbus.String(self._get_property(prop))

         elif prop == "AutomaticHelpers":

             return dbus.String(self._get_property(prop))

-        elif prop == "FirewallBackend":

-            return dbus.String(self._get_property(prop))

         else:

             raise dbus.exceptions.DBusException(

                 "org.freedesktop.DBus.Error.InvalidArgs: "

@@ -590,7 +583,7 @@ class FirewallDConfig(slip.dbus.service.Object):

         if interface_name == config.dbus.DBUS_INTERFACE_CONFIG:

             for x in [ "DefaultZone", "MinimalMark", "CleanupOnExit",

                        "Lockdown", "IPv6_rpfilter", "IndividualCalls",

-                       "LogDenied", "AutomaticHelpers", "FirewallBackend" ]:

+                       "LogDenied", "AutomaticHelpers" ]:

                 ret[x] = self._get_property(x)

         elif interface_name in [ config.dbus.DBUS_INTERFACE_CONFIG_DIRECT,

                                  config.dbus.DBUS_INTERFACE_CONFIG_POLICIES ]:

@@ -616,8 +609,7 @@ class FirewallDConfig(slip.dbus.service.Object):

         if interface_name == config.dbus.DBUS_INTERFACE_CONFIG:

             if property_name in [ "MinimalMark", "CleanupOnExit", "Lockdown",

                                   "IPv6_rpfilter", "IndividualCalls",

-                                  "LogDenied", "AutomaticHelpers",

-                                  "FirewallBackend" ]:

+                                  "LogDenied", "AutomaticHelpers" ]:

                 if property_name == "MinimalMark":

                     try:

                         int(new_value)

@@ -646,11 +638,6 @@ class FirewallDConfig(slip.dbus.service.Object):

                         raise FirewallError(errors.INVALID_VALUE,

                                             "'%s' for %s" % \

                                             (new_value, property_name))

-                if property_name == "FirewallBackend":

-                    if new_value not in config.FIREWALL_BACKEND_VALUES:

-                        raise FirewallError(errors.INVALID_VALUE,

-                                            "'%s' for %s" % \

-                                            (new_value, property_name))

                 self.config.get_firewalld_conf().set(property_name, new_value)

                 self.config.get_firewalld_conf().write()

                 self.PropertiesChanged(interface_name,

diff --git a/src/tests/dbus/firewalld.conf.at b/src/tests/dbus/firewalld.conf.at

index 473210de10af..741b1e6f417f 100644

--- a/src/tests/dbus/firewalld.conf.at

+++ b/src/tests/dbus/firewalld.conf.at

@@ -5,10 +5,7 @@ DBUS_GETALL([config], [config], 0, [dnl

 string "AutomaticHelpers" : variant string "system"

 string "CleanupOnExit" : variant string "no"

 string "DefaultZone" : variant string "public"

-string "FirewallBackend" : variant string "nftables"

-m4_if(no, HOST_SUPPORTS_NFT_FIB, [dnl

-string "IPv6_rpfilter" : variant string "no"],[dnl

-string "IPv6_rpfilter" : variant string "yes"])

+string "IPv6_rpfilter" : variant string "yes"

 string "IndividualCalls" : variant string "no"

 string "Lockdown" : variant string "no"

 string "LogDenied" : variant string "off"

@@ -29,7 +26,6 @@ _helper([Lockdown], [string:"yes"], [variant string "yes"])

 _helper([LogDenied], [string:"all"], [variant string "all"])

 _helper([IPv6_rpfilter], [string:"yes"], [variant string "yes"])

 _helper([IndividualCalls], [string:"yes"], [variant string "yes"])

-_helper([FirewallBackend], [string:"iptables"], [variant string "iptables"])

 _helper([CleanupOnExit], [string:"yes"], [variant string "yes"])

 dnl Note: DefaultZone is RO

 m4_undefine([_helper])

diff --git a/src/tests/functions.at b/src/tests/functions.at

index bae43faed410..3841df4264d7 100644

--- a/src/tests/functions.at

+++ b/src/tests/functions.at

@@ -58,14 +58,11 @@ m4_define([FWD_START_TEST], [

     fi

     m4_ifdef([TESTING_FIREWALL_OFFLINE_CMD], [], [

-        m4_define_default([FIREWALL_BACKEND], [nftables])

+        m4_define_default([FIREWALL_BACKEND], [iptables])

         dnl don't unload modules or bother cleaning up, the namespace will be deleted

         AT_CHECK([sed -i 's/^CleanupOnExit.*/CleanupOnExit=no/' ./firewalld.conf])

-        dnl set the appropriate backend

-        AT_CHECK([sed -i 's/^FirewallBackend.*/FirewallBackend=FIREWALL_BACKEND/' ./firewalld.conf])

-

         dnl fib matching is pretty new in nftables. Don't use rpfilter on older

         dnl kernels.

         m4_if(nftables, FIREWALL_BACKEND, [

diff --git a/src/tests/testsuite.at b/src/tests/testsuite.at

index 2943d7460919..68d18c9018b8 100644

--- a/src/tests/testsuite.at

+++ b/src/tests/testsuite.at

@@ -10,7 +10,7 @@ m4_include([functions.at])

 m4_include([firewall-offline-cmd.at])

 m4_include([dbus.at])

-m4_foreach([FIREWALL_BACKEND], [[nftables], [iptables]], [

+m4_foreach([FIREWALL_BACKEND], [[iptables]], [

     m4_include([firewall-cmd.at])

     m4_include([regression.at])

     m4_include([python.at])

-- 

2.20.1