1 files changed, 102 insertions, 0 deletions
diff --git a/src/grp-network/libnetworkd-core/networkd-util.c b/src/grp-network/libnetworkd-core/networkd-util.c
new file mode 100644
index 0000000000..d0569215ab
--- /dev/null
+++ b/src/grp-network/libnetworkd-core/networkd-util.c
@@ -0,0 +1,102 @@
+/***
+  This file is part of systemd.
+
+  Copyright 2013 Tom Gundersen <teg@jklm.no>
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "systemd-basic/parse-util.h"
+#include "systemd-basic/string-table.h"
+#include "systemd-basic/string-util.h"
+#include "systemd-basic/util.h"
+#include "systemd-shared/conf-parser.h"
+
+#include "networkd-util.h"
+
+const char *address_family_boolean_to_string(AddressFamilyBoolean b) {
+        if (b == ADDRESS_FAMILY_YES ||
+            b == ADDRESS_FAMILY_NO)
+                return yes_no(b == ADDRESS_FAMILY_YES);
+
+        if (b == ADDRESS_FAMILY_IPV4)
+                return "ipv4";
+        if (b == ADDRESS_FAMILY_IPV6)
+                return "ipv6";
+
+        return NULL;
+}
+
+AddressFamilyBoolean address_family_boolean_from_string(const char *s) {
+        int r;
+
+        /* Make this a true superset of a boolean */
+
+        r = parse_boolean(s);
+        if (r > 0)
+                return ADDRESS_FAMILY_YES;
+        if (r == 0)
+                return ADDRESS_FAMILY_NO;
+
+        if (streq(s, "ipv4"))
+                return ADDRESS_FAMILY_IPV4;
+        if (streq(s, "ipv6"))
+                return ADDRESS_FAMILY_IPV6;
+
+        return _ADDRESS_FAMILY_BOOLEAN_INVALID;
+}
+
+DEFINE_CONFIG_PARSE_ENUM(config_parse_address_family_boolean, address_family_boolean, AddressFamilyBoolean, "Failed to parse option");
+
+int config_parse_address_family_boolean_with_kernel(
+                const char* unit,
+                const char *filename,
+                unsigned line,
+                const char *section,
+                unsigned section_line,
+                const char *lvalue,
+                int ltype,
+                const char *rvalue,
+                void *data,
+                void *userdata) {
+
+        AddressFamilyBoolean *fwd = data, s;
+
+        assert(filename);
+        assert(lvalue);
+        assert(rvalue);
+        assert(data);
+
+        /* This function is mostly obsolete now. It simply redirects
+         * "kernel" to "no". In older networkd versions we used to
+         * distuingish IPForward=off from IPForward=kernel, where the
+         * former would explicitly turn off forwarding while the
+         * latter would simply not touch the setting. But that logic
+         * is gone, hence silently accept the old setting, but turn it
+         * to "no". */
+
+        s = address_family_boolean_from_string(rvalue);
+        if (s < 0) {
+                if (streq(rvalue, "kernel"))
+                        s = ADDRESS_FAMILY_NO;
+                else {
+                        log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse IPForward= option, ignoring: %s", rvalue);
+                        return 0;
+                }
+        }
+
+        *fwd = s;
+
+        return 0;
+}