-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
- This file is part of systemd.
-
Copyright 2015 Lennart Poettering
-
- 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 <sys/types.h>
+/* Temporary work-around for broken glibc vs. linux kernel header definitions
+ * This is already fixed upstream, remove this when distributions have updated.
+ */
+#define _NET_IF_H 1
+
+#include <alloca.h>
#include <arpa/inet.h>
+#include <endian.h>
+#include <errno.h>
+#include <stddef.h>
+#include <string.h>
+#include <sys/socket.h>
#include <net/if.h>
+#ifndef IFNAMSIZ
+#define IFNAMSIZ 16
+#endif
+#include <linux/if.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/netfilter/nf_nat.h>
#include <linux/netfilter/xt_addrtype.h>
#include <libiptc/libiptc.h>
-#include "util.h"
+#include "alloc-util.h"
#include "firewall-util.h"
+#include "in-addr-util.h"
+#include "macro.h"
+#include "socket-util.h"
DEFINE_TRIVIAL_CLEANUP_FUNC(struct xtc_handle*, iptc_free);
assert(entry);
- if (out_interface && strlen(out_interface) >= IFNAMSIZ)
+ if (out_interface && !ifname_valid(out_interface))
return -EINVAL;
-
- if (in_interface && strlen(in_interface) >= IFNAMSIZ)
+ if (in_interface && !ifname_valid(in_interface))
return -EINVAL;
entry->ip.proto = protocol;
}
if (source) {
entry->ip.src = source->in;
- in_addr_prefixlen_to_netmask(&entry->ip.smsk, source_prefixlen);
+ in4_addr_prefixlen_to_netmask(&entry->ip.smsk, source_prefixlen);
}
if (out_interface) {
+ size_t l = strlen(out_interface);
+ assert(l < sizeof entry->ip.outiface);
+ assert(l < sizeof entry->ip.outiface_mask);
+
strcpy(entry->ip.outiface, out_interface);
- memset(entry->ip.outiface_mask, 0xFF, strlen(out_interface)+1);
+ memset(entry->ip.outiface_mask, 0xFF, l + 1);
}
if (destination) {
entry->ip.dst = destination->in;
- in_addr_prefixlen_to_netmask(&entry->ip.dmsk, destination_prefixlen);
+ in4_addr_prefixlen_to_netmask(&entry->ip.dmsk, destination_prefixlen);
}
return 0;
if (af != AF_INET)
return -EOPNOTSUPP;
- if (protocol != 0 && protocol != IPPROTO_TCP && protocol != IPPROTO_UDP)
+ if (!IN_SET(protocol, 0, IPPROTO_TCP, IPPROTO_UDP))
return -EOPNOTSUPP;
h = iptc_init("nat");
uint16_t remote_port,
const union in_addr_union *previous_remote) {
-
_cleanup_(iptc_freep) struct xtc_handle *h = NULL;
struct ipt_entry *entry, *mask;
struct ipt_entry_target *t;
if (af != AF_INET)
return -EOPNOTSUPP;
- if (protocol != IPPROTO_TCP && protocol != IPPROTO_UDP)
+ if (!IN_SET(protocol, IPPROTO_TCP, IPPROTO_UDP))
return -EOPNOTSUPP;
if (local_port <= 0)