--- /dev/null
+/***
+ This file is part of systemd.
+
+ Copyright 2016 Daniel Mack
+
+ 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 <stdio.h>
+#include <stdlib.h>
+
+#include "alloc-util.h"
+#include "extract-word.h"
+#include "hostname-util.h"
+#include "ip-address-access.h"
+#include "parse-util.h"
+#include "string-util.h"
+
+int config_parse_ip_address_access(
+ 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) {
+
+ IPAddressAccessItem **list = data;
+ const char *p;
+ int r;
+
+ assert(list);
+
+ if (isempty(rvalue)) {
+ *list = ip_address_access_free_all(*list);
+ return 0;
+ }
+
+ p = rvalue;
+
+ for (;;) {
+ _cleanup_free_ IPAddressAccessItem *a = NULL;
+ _cleanup_free_ char *word = NULL;
+
+ r = extract_first_word(&p, &word, NULL, 0);
+ if (r == 0)
+ break;
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
+ break;
+ }
+
+ a = new0(IPAddressAccessItem, 1);
+ if (!a)
+ return log_oom();
+
+ if (streq(word, "any")) {
+ /* "any" is a shortcut for 0.0.0.0/0 and ::/0 */
+
+ a->family = AF_INET;
+ LIST_APPEND(items, *list, a);
+
+ a = new0(IPAddressAccessItem, 1);
+ if (!a)
+ return log_oom();
+
+ a->family = AF_INET6;
+
+ } else if (is_localhost(word)) {
+ /* "localhost" is a shortcut for 127.0.0.0/8 and ::1/128 */
+
+ a->family = AF_INET;
+ a->address.in.s_addr = htobe32(0x7f000000);
+ a->prefixlen = 8;
+ LIST_APPEND(items, *list, a);
+
+ a = new0(IPAddressAccessItem, 1);
+ if (!a)
+ return log_oom();
+
+ a->family = AF_INET6;
+ a->address.in6 = (struct in6_addr) IN6ADDR_LOOPBACK_INIT;
+ a->prefixlen = 128;
+
+ } else if (streq(word, "link-local")) {
+
+ /* "link-local" is a shortcut for 169.254.0.0/16 and fe80::/64 */
+
+ a->family = AF_INET;
+ a->address.in.s_addr = htobe32((UINT32_C(169) << 24 | UINT32_C(254) << 16));
+ a->prefixlen = 16;
+ LIST_APPEND(items, *list, a);
+
+ a = new0(IPAddressAccessItem, 1);
+ if (!a)
+ return log_oom();
+
+ a->family = AF_INET6;
+ a->address.in6 = (struct in6_addr) {
+ .__in6_u.__u6_addr32[0] = htobe32(0xfe800000)
+ };
+ a->prefixlen = 64;
+
+ } else if (streq(word, "multicast")) {
+
+ /* "multicast" is a shortcut for 224.0.0.0/4 and ff00::/8 */
+
+ a->family = AF_INET;
+ a->address.in.s_addr = htobe32((UINT32_C(224) << 24));
+ a->prefixlen = 4;
+ LIST_APPEND(items, *list, a);
+
+ a = new0(IPAddressAccessItem, 1);
+ if (!a)
+ return log_oom();
+
+ a->family = AF_INET6;
+ a->address.in6 = (struct in6_addr) {
+ .__in6_u.__u6_addr32[0] = htobe32(0xff000000)
+ };
+ a->prefixlen = 8;
+
+ } else {
+ r = in_addr_prefix_from_string_auto(word, &a->family, &a->address, &a->prefixlen);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Address prefix is invalid, ignoring assignment: %s", word);
+ return 0;
+ }
+ }
+
+ LIST_APPEND(items, *list, a);
+ a = NULL;
+ }
+
+ return 0;
+}
+
+IPAddressAccessItem* ip_address_access_free_all(IPAddressAccessItem *first) {
+ IPAddressAccessItem *next, *p = first;
+
+ while (p) {
+ next = p->items_next;
+ free(p);
+
+ p = next;
+ }
+
+ return NULL;
+}
--- /dev/null
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2016 Daniel Mack
+
+ 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 "in-addr-util.h"
+#include "list.h"
+
+typedef struct IPAddressAccessItem IPAddressAccessItem;
+
+struct IPAddressAccessItem {
+ int family;
+ unsigned char prefixlen;
+ union in_addr_union address;
+ LIST_FIELDS(IPAddressAccessItem, items);
+};
+
+int config_parse_ip_address_access(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);
+
+IPAddressAccessItem* ip_address_access_free_all(IPAddressAccessItem *first);