1000 lines
30 KiB
C
1000 lines
30 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/***
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Copyright © 2017 Intel Corporation. All rights reserved.
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***/
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#include <netinet/icmp6.h>
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#include <arpa/inet.h>
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#include "dns-domain.h"
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#include "networkd-link.h"
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#include "networkd-manager.h"
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#include "networkd-network.h"
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#include "networkd-radv.h"
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#include "parse-util.h"
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#include "string-util.h"
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#include "string-table.h"
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#include "strv.h"
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Prefix *prefix_free(Prefix *prefix) {
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if (!prefix)
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return NULL;
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if (prefix->network) {
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assert(prefix->section);
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hashmap_remove(prefix->network->prefixes_by_section, prefix->section);
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}
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network_config_section_free(prefix->section);
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sd_radv_prefix_unref(prefix->radv_prefix);
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return mfree(prefix);
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}
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DEFINE_NETWORK_SECTION_FUNCTIONS(Prefix, prefix_free);
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static int prefix_new(Prefix **ret) {
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_cleanup_(prefix_freep) Prefix *prefix = NULL;
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prefix = new0(Prefix, 1);
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if (!prefix)
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return -ENOMEM;
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if (sd_radv_prefix_new(&prefix->radv_prefix) < 0)
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return -ENOMEM;
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*ret = TAKE_PTR(prefix);
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return 0;
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}
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static int prefix_new_static(Network *network, const char *filename, unsigned section_line, Prefix **ret) {
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_cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
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_cleanup_(prefix_freep) Prefix *prefix = NULL;
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int r;
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assert(network);
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assert(ret);
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assert(filename);
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assert(section_line > 0);
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r = network_config_section_new(filename, section_line, &n);
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if (r < 0)
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return r;
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prefix = hashmap_get(network->prefixes_by_section, n);
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if (prefix) {
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*ret = TAKE_PTR(prefix);
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return 0;
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}
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r = prefix_new(&prefix);
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if (r < 0)
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return r;
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prefix->network = network;
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prefix->section = TAKE_PTR(n);
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r = hashmap_ensure_allocated(&network->prefixes_by_section, &network_config_hash_ops);
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if (r < 0)
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return r;
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r = hashmap_put(network->prefixes_by_section, prefix->section, prefix);
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if (r < 0)
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return r;
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*ret = TAKE_PTR(prefix);
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return 0;
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}
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RoutePrefix *route_prefix_free(RoutePrefix *prefix) {
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if (!prefix)
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return NULL;
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if (prefix->network) {
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assert(prefix->section);
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hashmap_remove(prefix->network->route_prefixes_by_section, prefix->section);
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}
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network_config_section_free(prefix->section);
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sd_radv_route_prefix_unref(prefix->radv_route_prefix);
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return mfree(prefix);
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}
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DEFINE_NETWORK_SECTION_FUNCTIONS(RoutePrefix, route_prefix_free);
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static int route_prefix_new(RoutePrefix **ret) {
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_cleanup_(route_prefix_freep) RoutePrefix *prefix = NULL;
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prefix = new0(RoutePrefix, 1);
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if (!prefix)
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return -ENOMEM;
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if (sd_radv_route_prefix_new(&prefix->radv_route_prefix) < 0)
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return -ENOMEM;
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*ret = TAKE_PTR(prefix);
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return 0;
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}
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static int route_prefix_new_static(Network *network, const char *filename, unsigned section_line, RoutePrefix **ret) {
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_cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
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_cleanup_(route_prefix_freep) RoutePrefix *prefix = NULL;
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int r;
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assert(network);
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assert(ret);
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assert(filename);
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assert(section_line > 0);
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r = network_config_section_new(filename, section_line, &n);
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if (r < 0)
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return r;
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prefix = hashmap_get(network->route_prefixes_by_section, n);
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if (prefix) {
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*ret = TAKE_PTR(prefix);
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return 0;
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}
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r = route_prefix_new(&prefix);
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if (r < 0)
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return r;
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prefix->network = network;
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prefix->section = TAKE_PTR(n);
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r = hashmap_ensure_allocated(&network->route_prefixes_by_section, &network_config_hash_ops);
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if (r < 0)
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return r;
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r = hashmap_put(network->route_prefixes_by_section, prefix->section, prefix);
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if (r < 0)
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return r;
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*ret = TAKE_PTR(prefix);
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return 0;
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}
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void network_drop_invalid_prefixes(Network *network) {
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Prefix *prefix;
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assert(network);
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HASHMAP_FOREACH(prefix, network->prefixes_by_section)
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if (section_is_invalid(prefix->section))
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prefix_free(prefix);
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}
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void network_drop_invalid_route_prefixes(Network *network) {
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RoutePrefix *prefix;
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assert(network);
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HASHMAP_FOREACH(prefix, network->route_prefixes_by_section)
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if (section_is_invalid(prefix->section))
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route_prefix_free(prefix);
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}
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void network_adjust_radv(Network *network) {
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assert(network);
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/* After this function is called, network->router_prefix_delegation can be treated as a boolean. */
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if (network->dhcp6_pd < 0)
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/* For backward compatibility. */
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network->dhcp6_pd = FLAGS_SET(network->router_prefix_delegation, RADV_PREFIX_DELEGATION_DHCP6);
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if (!FLAGS_SET(network->link_local, ADDRESS_FAMILY_IPV6)) {
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if (network->router_prefix_delegation != RADV_PREFIX_DELEGATION_NONE)
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log_warning("%s: IPv6PrefixDelegation= is enabled but IPv6 link local addressing is disabled. "
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"Disabling IPv6PrefixDelegation=.", network->filename);
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network->router_prefix_delegation = RADV_PREFIX_DELEGATION_NONE;
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}
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if (network->router_prefix_delegation == RADV_PREFIX_DELEGATION_NONE) {
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network->n_router_dns = 0;
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network->router_dns = mfree(network->router_dns);
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network->router_search_domains = ordered_set_free(network->router_search_domains);
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}
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if (!FLAGS_SET(network->router_prefix_delegation, RADV_PREFIX_DELEGATION_STATIC)) {
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network->prefixes_by_section = hashmap_free_with_destructor(network->prefixes_by_section, prefix_free);
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network->route_prefixes_by_section = hashmap_free_with_destructor(network->route_prefixes_by_section, route_prefix_free);
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}
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}
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int config_parse_prefix(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Network *network = userdata;
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_cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL;
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uint8_t prefixlen = 64;
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union in_addr_union in6addr;
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int r;
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assert(filename);
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assert(section);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = prefix_new_static(network, filename, section_line, &p);
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if (r < 0)
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return log_oom();
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r = in_addr_prefix_from_string(rvalue, AF_INET6, &in6addr, &prefixlen);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r, "Prefix is invalid, ignoring assignment: %s", rvalue);
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return 0;
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}
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r = sd_radv_prefix_set_prefix(p->radv_prefix, &in6addr.in6, prefixlen);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to set radv prefix, ignoring assignment: %s", rvalue);
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return 0;
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}
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p = NULL;
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return 0;
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}
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int config_parse_prefix_flags(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Network *network = userdata;
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_cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL;
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int r;
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assert(filename);
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assert(section);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = prefix_new_static(network, filename, section_line, &p);
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if (r < 0)
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return log_oom();
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r = parse_boolean(rvalue);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s=, ignoring assignment: %s", lvalue, rvalue);
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return 0;
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}
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if (streq(lvalue, "OnLink"))
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r = sd_radv_prefix_set_onlink(p->radv_prefix, r);
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else if (streq(lvalue, "AddressAutoconfiguration"))
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r = sd_radv_prefix_set_address_autoconfiguration(p->radv_prefix, r);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to set %s=, ignoring assignment: %m", lvalue);
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return 0;
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}
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p = NULL;
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return 0;
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}
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int config_parse_prefix_lifetime(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Network *network = userdata;
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_cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL;
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usec_t usec;
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int r;
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assert(filename);
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assert(section);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = prefix_new_static(network, filename, section_line, &p);
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if (r < 0)
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return log_oom();
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r = parse_sec(rvalue, &usec);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r, "Lifetime is invalid, ignoring assignment: %s", rvalue);
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return 0;
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}
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/* a value of 0xffffffff represents infinity */
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if (streq(lvalue, "PreferredLifetimeSec"))
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r = sd_radv_prefix_set_preferred_lifetime(p->radv_prefix,
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DIV_ROUND_UP(usec, USEC_PER_SEC));
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else if (streq(lvalue, "ValidLifetimeSec"))
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r = sd_radv_prefix_set_valid_lifetime(p->radv_prefix,
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DIV_ROUND_UP(usec, USEC_PER_SEC));
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to set %s=, ignoring assignment: %m", lvalue);
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return 0;
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}
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p = NULL;
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return 0;
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}
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int config_parse_prefix_assign(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Network *network = userdata;
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_cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL;
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int r;
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assert(filename);
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assert(section);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = prefix_new_static(network, filename, section_line, &p);
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if (r < 0)
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return log_oom();
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r = parse_boolean(rvalue);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"Failed to parse %s=, ignoring assignment: %s",
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lvalue, rvalue);
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return 0;
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}
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p->assign = r;
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p = NULL;
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return 0;
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}
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int config_parse_route_prefix(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Network *network = userdata;
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_cleanup_(route_prefix_free_or_set_invalidp) RoutePrefix *p = NULL;
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uint8_t prefixlen = 64;
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union in_addr_union in6addr;
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int r;
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assert(filename);
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assert(section);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = route_prefix_new_static(network, filename, section_line, &p);
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if (r < 0)
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return log_oom();
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r = in_addr_prefix_from_string(rvalue, AF_INET6, &in6addr, &prefixlen);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r, "Route prefix is invalid, ignoring assignment: %s", rvalue);
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return 0;
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}
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r = sd_radv_prefix_set_route_prefix(p->radv_route_prefix, &in6addr.in6, prefixlen);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to set route prefix, ignoring assignment: %m");
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return 0;
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}
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p = NULL;
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return 0;
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}
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int config_parse_route_prefix_lifetime(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Network *network = userdata;
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_cleanup_(route_prefix_free_or_set_invalidp) RoutePrefix *p = NULL;
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usec_t usec;
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int r;
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assert(filename);
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assert(section);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = route_prefix_new_static(network, filename, section_line, &p);
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if (r < 0)
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return log_oom();
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r = parse_sec(rvalue, &usec);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"Route lifetime is invalid, ignoring assignment: %s", rvalue);
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return 0;
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}
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/* a value of 0xffffffff represents infinity */
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r = sd_radv_route_prefix_set_lifetime(p->radv_route_prefix, DIV_ROUND_UP(usec, USEC_PER_SEC));
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"Failed to set route lifetime, ignoring assignment: %m");
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return 0;
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}
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p = NULL;
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return 0;
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}
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static int network_get_ipv6_dns(Network *network, struct in6_addr **ret_addresses, size_t *ret_size) {
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_cleanup_free_ struct in6_addr *addresses = NULL;
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size_t n_addresses = 0, n_allocated = 0;
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assert(network);
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assert(ret_addresses);
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assert(ret_size);
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for (size_t i = 0; i < network->n_dns; i++) {
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union in_addr_union *addr;
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if (network->dns[i]->family != AF_INET6)
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continue;
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addr = &network->dns[i]->address;
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if (in_addr_is_null(AF_INET6, addr) ||
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in_addr_is_link_local(AF_INET6, addr) ||
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in_addr_is_localhost(AF_INET6, addr))
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continue;
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if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1))
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return -ENOMEM;
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addresses[n_addresses++] = addr->in6;
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}
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*ret_addresses = TAKE_PTR(addresses);
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*ret_size = n_addresses;
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return n_addresses;
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}
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static int radv_set_dns(Link *link, Link *uplink) {
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_cleanup_free_ struct in6_addr *dns = NULL;
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usec_t lifetime_usec;
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size_t n_dns;
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int r;
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if (!link->network->router_emit_dns)
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return 0;
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if (link->network->router_dns) {
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struct in6_addr *p;
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dns = new(struct in6_addr, link->network->n_router_dns);
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if (!dns)
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return -ENOMEM;
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p = dns;
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for (size_t i = 0; i < link->network->n_router_dns; i++)
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if (IN6_IS_ADDR_UNSPECIFIED(&link->network->router_dns[i])) {
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if (!IN6_IS_ADDR_UNSPECIFIED(&link->ipv6ll_address))
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*(p++) = link->ipv6ll_address;
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} else
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*(p++) = link->network->router_dns[i];
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n_dns = p - dns;
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lifetime_usec = link->network->router_dns_lifetime_usec;
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goto set_dns;
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}
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|
lifetime_usec = SD_RADV_DEFAULT_DNS_LIFETIME_USEC;
|
|
|
|
r = network_get_ipv6_dns(link->network, &dns, &n_dns);
|
|
if (r > 0)
|
|
goto set_dns;
|
|
|
|
if (uplink) {
|
|
if (!uplink->network) {
|
|
log_link_debug(uplink, "Cannot fetch DNS servers as uplink interface is not managed by us");
|
|
return 0;
|
|
}
|
|
|
|
r = network_get_ipv6_dns(uplink->network, &dns, &n_dns);
|
|
if (r > 0)
|
|
goto set_dns;
|
|
}
|
|
|
|
return 0;
|
|
|
|
set_dns:
|
|
return sd_radv_set_rdnss(link->radv,
|
|
DIV_ROUND_UP(lifetime_usec, USEC_PER_SEC),
|
|
dns, n_dns);
|
|
}
|
|
|
|
static int radv_set_domains(Link *link, Link *uplink) {
|
|
OrderedSet *search_domains;
|
|
usec_t lifetime_usec;
|
|
_cleanup_free_ char **s = NULL; /* just free() because the strings are owned by the set */
|
|
|
|
if (!link->network->router_emit_domains)
|
|
return 0;
|
|
|
|
search_domains = link->network->router_search_domains;
|
|
lifetime_usec = link->network->router_dns_lifetime_usec;
|
|
|
|
if (search_domains)
|
|
goto set_domains;
|
|
|
|
lifetime_usec = SD_RADV_DEFAULT_DNS_LIFETIME_USEC;
|
|
|
|
search_domains = link->network->search_domains;
|
|
if (search_domains)
|
|
goto set_domains;
|
|
|
|
if (uplink) {
|
|
if (!uplink->network) {
|
|
log_link_debug(uplink, "Cannot fetch DNS search domains as uplink interface is not managed by us");
|
|
return 0;
|
|
}
|
|
|
|
search_domains = uplink->network->search_domains;
|
|
if (search_domains)
|
|
goto set_domains;
|
|
}
|
|
|
|
return 0;
|
|
|
|
set_domains:
|
|
s = ordered_set_get_strv(search_domains);
|
|
if (!s)
|
|
return log_oom();
|
|
|
|
return sd_radv_set_dnssl(link->radv,
|
|
DIV_ROUND_UP(lifetime_usec, USEC_PER_SEC),
|
|
s);
|
|
|
|
}
|
|
|
|
int radv_emit_dns(Link *link) {
|
|
Link *uplink;
|
|
int r;
|
|
|
|
uplink = manager_find_uplink(link->manager, link);
|
|
|
|
r = radv_set_dns(link, uplink);
|
|
if (r < 0)
|
|
log_link_warning_errno(link, r, "Could not set RA DNS: %m");
|
|
|
|
r = radv_set_domains(link, uplink);
|
|
if (r < 0)
|
|
log_link_warning_errno(link, r, "Could not set RA Domains: %m");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bool link_radv_enabled(Link *link) {
|
|
assert(link);
|
|
|
|
if (!link_ipv6ll_enabled(link))
|
|
return false;
|
|
|
|
return link->network->router_prefix_delegation;
|
|
}
|
|
|
|
int radv_configure(Link *link) {
|
|
uint16_t router_lifetime;
|
|
RoutePrefix *q;
|
|
Prefix *p;
|
|
int r;
|
|
|
|
assert(link);
|
|
assert(link->network);
|
|
|
|
if (!link_radv_enabled(link))
|
|
return 0;
|
|
|
|
r = sd_radv_new(&link->radv);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_radv_attach_event(link->radv, link->manager->event, 0);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_radv_set_mac(link->radv, &link->hw_addr.addr.ether);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_radv_set_ifindex(link->radv, link->ifindex);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_radv_set_managed_information(link->radv, link->network->router_managed);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_radv_set_other_information(link->radv, link->network->router_other_information);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
/* a value of UINT16_MAX represents infinity, 0x0 means this host is not a router */
|
|
if (link->network->router_lifetime_usec == USEC_INFINITY)
|
|
router_lifetime = UINT16_MAX;
|
|
else if (link->network->router_lifetime_usec > (UINT16_MAX - 1) * USEC_PER_SEC)
|
|
router_lifetime = UINT16_MAX - 1;
|
|
else
|
|
router_lifetime = DIV_ROUND_UP(link->network->router_lifetime_usec, USEC_PER_SEC);
|
|
|
|
r = sd_radv_set_router_lifetime(link->radv, router_lifetime);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (router_lifetime > 0) {
|
|
r = sd_radv_set_preference(link->radv, link->network->router_preference);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
HASHMAP_FOREACH(p, link->network->prefixes_by_section) {
|
|
r = sd_radv_add_prefix(link->radv, p->radv_prefix, false);
|
|
if (r == -EEXIST)
|
|
continue;
|
|
if (r == -ENOEXEC) {
|
|
log_link_warning_errno(link, r, "[IPv6Prefix] section configured without Prefix= setting, ignoring section.");
|
|
continue;
|
|
}
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
HASHMAP_FOREACH(q, link->network->route_prefixes_by_section) {
|
|
r = sd_radv_add_route_prefix(link->radv, q->radv_route_prefix, false);
|
|
if (r == -EEXIST)
|
|
continue;
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int radv_update_mac(Link *link) {
|
|
bool restart;
|
|
int r;
|
|
|
|
assert(link);
|
|
|
|
if (!link->radv)
|
|
return 0;
|
|
|
|
restart = sd_radv_is_running(link->radv);
|
|
|
|
r = sd_radv_stop(link->radv);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_radv_set_mac(link->radv, &link->hw_addr.addr.ether);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (restart) {
|
|
r = sd_radv_start(link->radv);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int radv_add_prefix(
|
|
Link *link,
|
|
const struct in6_addr *prefix,
|
|
uint8_t prefix_len,
|
|
uint32_t lifetime_preferred,
|
|
uint32_t lifetime_valid) {
|
|
|
|
_cleanup_(sd_radv_prefix_unrefp) sd_radv_prefix *p = NULL;
|
|
int r;
|
|
|
|
assert(link);
|
|
|
|
if (!link->radv)
|
|
return 0;
|
|
|
|
r = sd_radv_prefix_new(&p);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_radv_prefix_set_prefix(p, prefix, prefix_len);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_radv_prefix_set_preferred_lifetime(p, lifetime_preferred);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_radv_prefix_set_valid_lifetime(p, lifetime_valid);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_radv_add_prefix(link->radv, p, true);
|
|
if (r < 0 && r != -EEXIST)
|
|
return r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int config_parse_radv_dns(
|
|
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) {
|
|
|
|
Network *n = data;
|
|
int r;
|
|
|
|
assert(filename);
|
|
assert(lvalue);
|
|
assert(rvalue);
|
|
|
|
if (isempty(rvalue)) {
|
|
n->n_router_dns = 0;
|
|
n->router_dns = mfree(n->router_dns);
|
|
return 0;
|
|
}
|
|
|
|
for (const char *p = rvalue;;) {
|
|
_cleanup_free_ char *w = NULL;
|
|
union in_addr_union a;
|
|
|
|
r = extract_first_word(&p, &w, NULL, 0);
|
|
if (r == -ENOMEM)
|
|
return log_oom();
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to extract word, ignoring: %s", rvalue);
|
|
return 0;
|
|
}
|
|
if (r == 0)
|
|
return 0;
|
|
|
|
if (streq(w, "_link_local"))
|
|
a = IN_ADDR_NULL;
|
|
else {
|
|
r = in_addr_from_string(AF_INET6, w, &a);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to parse DNS server address, ignoring: %s", w);
|
|
continue;
|
|
}
|
|
|
|
if (in_addr_is_null(AF_INET6, &a)) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, 0,
|
|
"DNS server address is null, ignoring: %s", w);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
struct in6_addr *m;
|
|
m = reallocarray(n->router_dns, n->n_router_dns + 1, sizeof(struct in6_addr));
|
|
if (!m)
|
|
return log_oom();
|
|
|
|
m[n->n_router_dns++] = a.in6;
|
|
n->router_dns = m;
|
|
}
|
|
}
|
|
|
|
int config_parse_radv_search_domains(
|
|
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) {
|
|
|
|
Network *n = data;
|
|
int r;
|
|
|
|
assert(filename);
|
|
assert(lvalue);
|
|
assert(rvalue);
|
|
|
|
if (isempty(rvalue)) {
|
|
n->router_search_domains = ordered_set_free(n->router_search_domains);
|
|
return 0;
|
|
}
|
|
|
|
for (const char *p = rvalue;;) {
|
|
_cleanup_free_ char *w = NULL, *idna = NULL;
|
|
|
|
r = extract_first_word(&p, &w, NULL, 0);
|
|
if (r == -ENOMEM)
|
|
return log_oom();
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to extract word, ignoring: %s", rvalue);
|
|
return 0;
|
|
}
|
|
if (r == 0)
|
|
return 0;
|
|
|
|
r = dns_name_apply_idna(w, &idna);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to apply IDNA to domain name '%s', ignoring: %m", w);
|
|
continue;
|
|
} else if (r == 0)
|
|
/* transfer ownership to simplify subsequent operations */
|
|
idna = TAKE_PTR(w);
|
|
|
|
r = ordered_set_ensure_allocated(&n->router_search_domains, &string_hash_ops_free);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
r = ordered_set_consume(n->router_search_domains, TAKE_PTR(idna));
|
|
if (r < 0)
|
|
return log_oom();
|
|
}
|
|
}
|
|
|
|
static const char * const radv_prefix_delegation_table[_RADV_PREFIX_DELEGATION_MAX] = {
|
|
[RADV_PREFIX_DELEGATION_NONE] = "no",
|
|
[RADV_PREFIX_DELEGATION_STATIC] = "static",
|
|
[RADV_PREFIX_DELEGATION_DHCP6] = "dhcpv6",
|
|
[RADV_PREFIX_DELEGATION_BOTH] = "yes",
|
|
};
|
|
|
|
DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(
|
|
radv_prefix_delegation,
|
|
RADVPrefixDelegation,
|
|
RADV_PREFIX_DELEGATION_BOTH);
|
|
|
|
int config_parse_router_prefix_delegation(
|
|
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) {
|
|
|
|
RADVPrefixDelegation val, *ra = data;
|
|
int r;
|
|
|
|
assert(filename);
|
|
assert(lvalue);
|
|
assert(rvalue);
|
|
assert(data);
|
|
|
|
if (streq(lvalue, "IPv6SendRA")) {
|
|
r = parse_boolean(rvalue);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Invalid %s= setting, ignoring assignment: %s", lvalue, rvalue);
|
|
return 0;
|
|
}
|
|
|
|
/* When IPv6SendRA= is enabled, only static prefixes are sent by default, and users
|
|
* need to explicitly enable DHCPv6PrefixDelegation=. */
|
|
*ra = r ? RADV_PREFIX_DELEGATION_STATIC : RADV_PREFIX_DELEGATION_NONE;
|
|
return 0;
|
|
}
|
|
|
|
/* For backward compatibility */
|
|
val = radv_prefix_delegation_from_string(rvalue);
|
|
if (val < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, 0,
|
|
"Invalid %s= setting, ignoring assignment: %s", lvalue, rvalue);
|
|
return 0;
|
|
}
|
|
|
|
*ra = val;
|
|
return 0;
|
|
}
|
|
|
|
int config_parse_router_preference(
|
|
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) {
|
|
|
|
Network *network = userdata;
|
|
|
|
assert(filename);
|
|
assert(section);
|
|
assert(lvalue);
|
|
assert(rvalue);
|
|
assert(data);
|
|
|
|
if (streq(rvalue, "high"))
|
|
network->router_preference = SD_NDISC_PREFERENCE_HIGH;
|
|
else if (STR_IN_SET(rvalue, "medium", "normal", "default"))
|
|
network->router_preference = SD_NDISC_PREFERENCE_MEDIUM;
|
|
else if (streq(rvalue, "low"))
|
|
network->router_preference = SD_NDISC_PREFERENCE_LOW;
|
|
else
|
|
log_syntax(unit, LOG_WARNING, filename, line, 0,
|
|
"Invalid router preference, ignoring assignment: %s", rvalue);
|
|
|
|
return 0;
|
|
}
|