| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| /*** |
| Copyright © 2017 Intel Corporation. All rights reserved. |
| ***/ |
| |
| #include <netinet/icmp6.h> |
| #include <arpa/inet.h> |
| |
| #include "dns-domain.h" |
| #include "networkd-address-generation.h" |
| #include "networkd-address.h" |
| #include "networkd-dhcp-prefix-delegation.h" |
| #include "networkd-link.h" |
| #include "networkd-manager.h" |
| #include "networkd-network.h" |
| #include "networkd-queue.h" |
| #include "networkd-radv.h" |
| #include "networkd-route-util.h" |
| #include "parse-util.h" |
| #include "radv-internal.h" |
| #include "string-util.h" |
| #include "string-table.h" |
| #include "strv.h" |
| |
| void network_adjust_radv(Network *network) { |
| assert(network); |
| |
| /* After this function is called, network->router_prefix_delegation can be treated as a boolean. */ |
| |
| if (network->dhcp_pd < 0) |
| /* For backward compatibility. */ |
| network->dhcp_pd = FLAGS_SET(network->router_prefix_delegation, RADV_PREFIX_DELEGATION_DHCP6); |
| |
| if (!FLAGS_SET(network->link_local, ADDRESS_FAMILY_IPV6)) { |
| if (network->router_prefix_delegation != RADV_PREFIX_DELEGATION_NONE) |
| log_warning("%s: IPv6PrefixDelegation= is enabled but IPv6 link-local addressing is disabled. " |
| "Disabling IPv6PrefixDelegation=.", network->filename); |
| |
| network->router_prefix_delegation = RADV_PREFIX_DELEGATION_NONE; |
| } |
| |
| if (network->router_prefix_delegation == RADV_PREFIX_DELEGATION_NONE) { |
| network->n_router_dns = 0; |
| network->router_dns = mfree(network->router_dns); |
| network->router_search_domains = ordered_set_free(network->router_search_domains); |
| } |
| |
| if (!FLAGS_SET(network->router_prefix_delegation, RADV_PREFIX_DELEGATION_STATIC)) { |
| network->prefixes_by_section = hashmap_free_with_destructor(network->prefixes_by_section, prefix_free); |
| network->route_prefixes_by_section = hashmap_free_with_destructor(network->route_prefixes_by_section, route_prefix_free); |
| } |
| } |
| |
| bool link_radv_enabled(Link *link) { |
| assert(link); |
| |
| if (!link_may_have_ipv6ll(link, /* check_multicast = */ true)) |
| return false; |
| |
| if (link->hw_addr.length != ETH_ALEN) |
| return false; |
| |
| return link->network->router_prefix_delegation; |
| } |
| |
| Prefix *prefix_free(Prefix *prefix) { |
| if (!prefix) |
| return NULL; |
| |
| if (prefix->network) { |
| assert(prefix->section); |
| hashmap_remove(prefix->network->prefixes_by_section, prefix->section); |
| } |
| |
| config_section_free(prefix->section); |
| set_free(prefix->tokens); |
| |
| return mfree(prefix); |
| } |
| |
| DEFINE_SECTION_CLEANUP_FUNCTIONS(Prefix, prefix_free); |
| |
| static int prefix_new_static(Network *network, const char *filename, unsigned section_line, Prefix **ret) { |
| _cleanup_(config_section_freep) ConfigSection *n = NULL; |
| _cleanup_(prefix_freep) Prefix *prefix = NULL; |
| int r; |
| |
| assert(network); |
| assert(ret); |
| assert(filename); |
| assert(section_line > 0); |
| |
| r = config_section_new(filename, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| prefix = hashmap_get(network->prefixes_by_section, n); |
| if (prefix) { |
| *ret = TAKE_PTR(prefix); |
| return 0; |
| } |
| |
| prefix = new(Prefix, 1); |
| if (!prefix) |
| return -ENOMEM; |
| |
| *prefix = (Prefix) { |
| .network = network, |
| .section = TAKE_PTR(n), |
| |
| .preferred_lifetime = RADV_DEFAULT_PREFERRED_LIFETIME_USEC, |
| .valid_lifetime = RADV_DEFAULT_VALID_LIFETIME_USEC, |
| .onlink = true, |
| .address_auto_configuration = true, |
| }; |
| |
| r = hashmap_ensure_put(&network->prefixes_by_section, &config_section_hash_ops, prefix->section, prefix); |
| if (r < 0) |
| return r; |
| |
| *ret = TAKE_PTR(prefix); |
| return 0; |
| } |
| |
| RoutePrefix *route_prefix_free(RoutePrefix *prefix) { |
| if (!prefix) |
| return NULL; |
| |
| if (prefix->network) { |
| assert(prefix->section); |
| hashmap_remove(prefix->network->route_prefixes_by_section, prefix->section); |
| } |
| |
| config_section_free(prefix->section); |
| |
| return mfree(prefix); |
| } |
| |
| DEFINE_SECTION_CLEANUP_FUNCTIONS(RoutePrefix, route_prefix_free); |
| |
| static int route_prefix_new_static(Network *network, const char *filename, unsigned section_line, RoutePrefix **ret) { |
| _cleanup_(config_section_freep) ConfigSection *n = NULL; |
| _cleanup_(route_prefix_freep) RoutePrefix *prefix = NULL; |
| int r; |
| |
| assert(network); |
| assert(ret); |
| assert(filename); |
| assert(section_line > 0); |
| |
| r = config_section_new(filename, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| prefix = hashmap_get(network->route_prefixes_by_section, n); |
| if (prefix) { |
| *ret = TAKE_PTR(prefix); |
| return 0; |
| } |
| |
| prefix = new(RoutePrefix, 1); |
| if (!prefix) |
| return -ENOMEM; |
| |
| *prefix = (RoutePrefix) { |
| .network = network, |
| .section = TAKE_PTR(n), |
| |
| .lifetime = RADV_DEFAULT_VALID_LIFETIME_USEC, |
| }; |
| |
| r = hashmap_ensure_put(&network->route_prefixes_by_section, &config_section_hash_ops, prefix->section, prefix); |
| if (r < 0) |
| return r; |
| |
| *ret = TAKE_PTR(prefix); |
| return 0; |
| } |
| |
| int link_request_radv_addresses(Link *link) { |
| Prefix *p; |
| int r; |
| |
| assert(link); |
| |
| if (!link_radv_enabled(link)) |
| return 0; |
| |
| HASHMAP_FOREACH(p, link->network->prefixes_by_section) { |
| _cleanup_set_free_ Set *addresses = NULL; |
| struct in6_addr *a; |
| |
| if (!p->assign) |
| continue; |
| |
| /* radv_generate_addresses() below requires the prefix length <= 64. */ |
| if (p->prefixlen > 64) |
| continue; |
| |
| r = radv_generate_addresses(link, p->tokens, &p->prefix, p->prefixlen, &addresses); |
| if (r < 0) |
| return r; |
| |
| SET_FOREACH(a, addresses) { |
| _cleanup_(address_freep) Address *address = NULL; |
| |
| r = address_new(&address); |
| if (r < 0) |
| return -ENOMEM; |
| |
| address->source = NETWORK_CONFIG_SOURCE_STATIC; |
| address->family = AF_INET6; |
| address->in_addr.in6 = *a; |
| address->prefixlen = p->prefixlen; |
| address->route_metric = p->route_metric; |
| |
| r = link_request_static_address(link, TAKE_PTR(address), true); |
| if (r < 0) |
| return r; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static uint32_t usec_to_lifetime(usec_t usec) { |
| uint64_t t; |
| |
| if (usec == USEC_INFINITY) |
| return UINT32_MAX; |
| |
| t = DIV_ROUND_UP(usec, USEC_PER_SEC); |
| if (t >= UINT32_MAX) |
| return UINT32_MAX; |
| |
| return (uint32_t) t; |
| } |
| |
| static int radv_set_prefix(Link *link, Prefix *prefix) { |
| _cleanup_(sd_radv_prefix_unrefp) sd_radv_prefix *p = NULL; |
| int r; |
| |
| assert(link); |
| assert(link->radv); |
| assert(prefix); |
| |
| r = sd_radv_prefix_new(&p); |
| if (r < 0) |
| return r; |
| |
| r = sd_radv_prefix_set_prefix(p, &prefix->prefix, prefix->prefixlen); |
| if (r < 0) |
| return r; |
| |
| r = sd_radv_prefix_set_preferred_lifetime(p, prefix->preferred_lifetime, USEC_INFINITY); |
| if (r < 0) |
| return r; |
| |
| r = sd_radv_prefix_set_valid_lifetime(p, prefix->valid_lifetime, USEC_INFINITY); |
| if (r < 0) |
| return r; |
| |
| r = sd_radv_prefix_set_onlink(p, prefix->onlink); |
| if (r < 0) |
| return r; |
| |
| r = sd_radv_prefix_set_address_autoconfiguration(p, prefix->address_auto_configuration); |
| if (r < 0) |
| return r; |
| |
| return sd_radv_add_prefix(link->radv, p); |
| } |
| |
| static int radv_set_route_prefix(Link *link, RoutePrefix *prefix) { |
| _cleanup_(sd_radv_route_prefix_unrefp) sd_radv_route_prefix *p = NULL; |
| int r; |
| |
| assert(link); |
| assert(link->radv); |
| assert(prefix); |
| |
| r = sd_radv_route_prefix_new(&p); |
| if (r < 0) |
| return r; |
| |
| r = sd_radv_route_prefix_set_prefix(p, &prefix->prefix, prefix->prefixlen); |
| if (r < 0) |
| return r; |
| |
| r = sd_radv_route_prefix_set_lifetime(p, prefix->lifetime, USEC_INFINITY); |
| if (r < 0) |
| return r; |
| |
| return sd_radv_add_route_prefix(link->radv, p); |
| } |
| |
| static int network_get_ipv6_dns(Network *network, struct in6_addr **ret_addresses, size_t *ret_size) { |
| _cleanup_free_ struct in6_addr *addresses = NULL; |
| size_t n_addresses = 0; |
| |
| assert(network); |
| assert(ret_addresses); |
| assert(ret_size); |
| |
| for (size_t i = 0; i < network->n_dns; i++) { |
| union in_addr_union *addr; |
| |
| if (network->dns[i]->family != AF_INET6) |
| continue; |
| |
| addr = &network->dns[i]->address; |
| |
| if (in_addr_is_null(AF_INET6, addr) || |
| in_addr_is_link_local(AF_INET6, addr) || |
| in_addr_is_localhost(AF_INET6, addr)) |
| continue; |
| |
| if (!GREEDY_REALLOC(addresses, n_addresses + 1)) |
| return -ENOMEM; |
| |
| addresses[n_addresses++] = addr->in6; |
| } |
| |
| *ret_addresses = TAKE_PTR(addresses); |
| *ret_size = n_addresses; |
| |
| return n_addresses; |
| } |
| |
| static int radv_set_dns(Link *link, Link *uplink) { |
| _cleanup_free_ struct in6_addr *dns = NULL; |
| size_t n_dns; |
| int r; |
| |
| if (!link->network->router_emit_dns) |
| return 0; |
| |
| if (link->network->router_dns) { |
| struct in6_addr *p; |
| |
| dns = new(struct in6_addr, link->network->n_router_dns); |
| if (!dns) |
| return -ENOMEM; |
| |
| p = dns; |
| for (size_t i = 0; i < link->network->n_router_dns; i++) |
| if (in6_addr_is_null(&link->network->router_dns[i])) { |
| if (in6_addr_is_set(&link->ipv6ll_address)) |
| *(p++) = link->ipv6ll_address; |
| } else |
| *(p++) = link->network->router_dns[i]; |
| |
| n_dns = p - dns; |
| |
| goto set_dns; |
| } |
| |
| r = network_get_ipv6_dns(link->network, &dns, &n_dns); |
| if (r > 0) |
| goto set_dns; |
| |
| if (uplink) { |
| assert(uplink->network); |
| |
| 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, |
| usec_to_lifetime(link->network->router_dns_lifetime_usec), |
| dns, n_dns); |
| } |
| |
| static int radv_set_domains(Link *link, Link *uplink) { |
| _cleanup_free_ char **s = NULL; /* just free() because the strings are owned by the set */ |
| OrderedSet *search_domains; |
| |
| if (!link->network->router_emit_domains) |
| return 0; |
| |
| search_domains = link->network->router_search_domains; |
| |
| if (search_domains) |
| goto set_domains; |
| |
| search_domains = link->network->search_domains; |
| if (search_domains) |
| goto set_domains; |
| |
| if (uplink) { |
| assert(uplink->network); |
| |
| 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, |
| usec_to_lifetime(link->network->router_dns_lifetime_usec), |
| s); |
| |
| } |
| |
| static int radv_find_uplink(Link *link, Link **ret) { |
| int r; |
| |
| assert(link); |
| |
| if (link->network->router_uplink_name) |
| return link_get_by_name(link->manager, link->network->router_uplink_name, ret); |
| |
| if (link->network->router_uplink_index > 0) |
| return link_get_by_index(link->manager, link->network->router_uplink_index, ret); |
| |
| if (link->network->router_uplink_index == UPLINK_INDEX_AUTO) { |
| if (link_dhcp_pd_is_enabled(link)) |
| r = dhcp_pd_find_uplink(link, ret); /* When DHCP-PD is enabled, use its uplink. */ |
| else |
| r = manager_find_uplink(link->manager, AF_INET6, link, ret); |
| if (r < 0) |
| /* It is not necessary to propagate error in automatic selection. */ |
| *ret = NULL; |
| return 0; |
| } |
| |
| *ret = NULL; |
| return 0; |
| } |
| |
| static int radv_configure(Link *link) { |
| Link *uplink = NULL; |
| RoutePrefix *q; |
| Prefix *p; |
| int r; |
| |
| assert(link); |
| assert(link->network); |
| |
| if (link->radv) |
| return -EBUSY; |
| |
| 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; |
| |
| if (link->hw_addr.length == ETH_ALEN) { |
| r = sd_radv_set_mac(link->radv, &link->hw_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; |
| |
| r = sd_radv_set_router_lifetime(link->radv, link->network->router_lifetime_usec); |
| if (r < 0) |
| return r; |
| |
| if (link->network->router_lifetime_usec > 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 = radv_set_prefix(link, p); |
| if (r < 0 && r != -EEXIST) |
| return r; |
| } |
| |
| HASHMAP_FOREACH(q, link->network->route_prefixes_by_section) { |
| r = radv_set_route_prefix(link, q); |
| if (r < 0 && r != -EEXIST) |
| return r; |
| } |
| |
| (void) radv_find_uplink(link, &uplink); |
| |
| r = radv_set_dns(link, uplink); |
| if (r < 0) |
| return log_link_debug_errno(link, r, "Could not set RA DNS: %m"); |
| |
| r = radv_set_domains(link, uplink); |
| if (r < 0) |
| return log_link_debug_errno(link, r, "Could not set RA Domains: %m"); |
| |
| return 0; |
| } |
| |
| int radv_update_mac(Link *link) { |
| bool restart; |
| int r; |
| |
| assert(link); |
| |
| if (!link->radv) |
| return 0; |
| |
| if (link->hw_addr.length != ETH_ALEN) |
| 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.ether); |
| if (r < 0) |
| return r; |
| |
| if (restart) { |
| r = sd_radv_start(link->radv); |
| if (r < 0) |
| return r; |
| } |
| |
| return 0; |
| } |
| |
| static int radv_is_ready_to_configure(Link *link) { |
| bool needs_uplink = false; |
| int r; |
| |
| assert(link); |
| assert(link->network); |
| |
| if (!link_is_ready_to_configure(link, /* allow_unmanaged = */ false)) |
| return false; |
| |
| if (in6_addr_is_null(&link->ipv6ll_address)) |
| return false; |
| |
| if (link->hw_addr.length != ETH_ALEN || hw_addr_is_null(&link->hw_addr)) |
| return false; |
| |
| if (link->network->router_emit_dns && !link->network->router_dns) { |
| _cleanup_free_ struct in6_addr *dns = NULL; |
| size_t n_dns; |
| |
| r = network_get_ipv6_dns(link->network, &dns, &n_dns); |
| if (r < 0) |
| return r; |
| |
| needs_uplink = r == 0; |
| } |
| |
| if (link->network->router_emit_domains && |
| !link->network->router_search_domains && |
| !link->network->search_domains) |
| needs_uplink = true; |
| |
| if (needs_uplink) { |
| Link *uplink = NULL; |
| |
| if (radv_find_uplink(link, &uplink) < 0) |
| return false; |
| |
| if (uplink && !uplink->network) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static int radv_process_request(Request *req, Link *link, void *userdata) { |
| int r; |
| |
| assert(link); |
| |
| r = radv_is_ready_to_configure(link); |
| if (r <= 0) |
| return r; |
| |
| r = radv_configure(link); |
| if (r < 0) |
| return log_link_warning_errno(link, r, "Failed to configure IPv6 Router Advertisement engine: %m"); |
| |
| if (link_has_carrier(link)) { |
| r = radv_start(link); |
| if (r < 0) |
| return log_link_warning_errno(link, r, "Failed to start IPv6 Router Advertisement engine: %m"); |
| } |
| |
| log_link_debug(link, "IPv6 Router Advertisement engine is configured%s.", |
| link_has_carrier(link) ? " and started" : ""); |
| return 1; |
| } |
| |
| int link_request_radv(Link *link) { |
| int r; |
| |
| assert(link); |
| |
| if (!link_radv_enabled(link)) |
| return 0; |
| |
| if (link->radv) |
| return 0; |
| |
| r = link_queue_request(link, REQUEST_TYPE_RADV, radv_process_request, NULL); |
| if (r < 0) |
| return log_link_warning_errno(link, r, "Failed to request configuring of the IPv6 Router Advertisement engine: %m"); |
| |
| log_link_debug(link, "Requested configuring of the IPv6 Router Advertisement engine."); |
| return 0; |
| } |
| |
| int radv_start(Link *link) { |
| int r; |
| |
| assert(link); |
| assert(link->network); |
| |
| if (!link->radv) |
| return 0; |
| |
| if (!link_has_carrier(link)) |
| return 0; |
| |
| if (in6_addr_is_null(&link->ipv6ll_address)) |
| return 0; |
| |
| if (sd_radv_is_running(link->radv)) |
| return 0; |
| |
| if (link->network->dhcp_pd_announce) { |
| r = dhcp_request_prefix_delegation(link); |
| if (r < 0) |
| return log_link_debug_errno(link, r, "Failed to request DHCP delegated subnet prefix: %m"); |
| } |
| |
| log_link_debug(link, "Starting IPv6 Router Advertisements"); |
| return sd_radv_start(link->radv); |
| } |
| |
| int radv_add_prefix( |
| Link *link, |
| const struct in6_addr *prefix, |
| uint8_t prefix_len, |
| usec_t lifetime_preferred_usec, |
| usec_t lifetime_valid_usec) { |
| |
| _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, RADV_DEFAULT_PREFERRED_LIFETIME_USEC, lifetime_preferred_usec); |
| if (r < 0) |
| return r; |
| |
| r = sd_radv_prefix_set_valid_lifetime(p, RADV_DEFAULT_VALID_LIFETIME_USEC, lifetime_valid_usec); |
| if (r < 0) |
| return r; |
| |
| r = sd_radv_add_prefix(link->radv, p); |
| if (r < 0 && r != -EEXIST) |
| return r; |
| |
| return 0; |
| } |
| |
| static int prefix_section_verify(Prefix *p) { |
| assert(p); |
| |
| if (section_is_invalid(p->section)) |
| return -EINVAL; |
| |
| if (in6_addr_is_null(&p->prefix)) |
| return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), |
| "%s: [IPv6Prefix] section without Prefix= field configured, " |
| "or specified prefix is the null address. " |
| "Ignoring [IPv6Prefix] section from line %u.", |
| p->section->filename, p->section->line); |
| |
| if (p->prefixlen < 3 || p->prefixlen > 128) |
| return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), |
| "%s: Invalid prefix length %u is specified in [IPv6Prefix] section. " |
| "Valid range is 3…128. Ignoring [IPv6Prefix] section from line %u.", |
| p->section->filename, p->prefixlen, p->section->line); |
| |
| if (p->prefixlen > 64) { |
| log_info("%s:%u: Unusual prefix length %u (> 64) is specified in [IPv6Prefix] section from line %s%s.", |
| p->section->filename, p->section->line, |
| p->prefixlen, |
| p->assign ? ", refusing to assign an address in " : "", |
| p->assign ? IN6_ADDR_PREFIX_TO_STRING(&p->prefix, p->prefixlen) : ""); |
| |
| p->assign = false; |
| } |
| |
| if (p->valid_lifetime == 0) |
| return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), |
| "%s: The valid lifetime of prefix cannot be zero. " |
| "Ignoring [IPv6Prefix] section from line %u.", |
| p->section->filename, p->section->line); |
| |
| if (p->preferred_lifetime > p->valid_lifetime) |
| return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), |
| "%s: The preferred lifetime %s is longer than the valid lifetime %s. " |
| "Ignoring [IPv6Prefix] section from line %u.", |
| p->section->filename, |
| FORMAT_TIMESPAN(p->preferred_lifetime, USEC_PER_SEC), |
| FORMAT_TIMESPAN(p->valid_lifetime, USEC_PER_SEC), |
| p->section->line); |
| |
| return 0; |
| } |
| |
| void network_drop_invalid_prefixes(Network *network) { |
| Prefix *p; |
| |
| assert(network); |
| |
| HASHMAP_FOREACH(p, network->prefixes_by_section) |
| if (prefix_section_verify(p) < 0) |
| prefix_free(p); |
| } |
| |
| static int route_prefix_section_verify(RoutePrefix *p) { |
| if (section_is_invalid(p->section)) |
| return -EINVAL; |
| |
| if (p->prefixlen > 128) |
| return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), |
| "%s: Invalid prefix length %u is specified in [IPv6RoutePrefix] section. " |
| "Valid range is 0…128. Ignoring [IPv6RoutePrefix] section from line %u.", |
| p->section->filename, p->prefixlen, p->section->line); |
| |
| if (p->lifetime == 0) |
| return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), |
| "%s: The lifetime of route cannot be zero. " |
| "Ignoring [IPv6RoutePrefix] section from line %u.", |
| p->section->filename, p->section->line); |
| |
| return 0; |
| } |
| |
| void network_drop_invalid_route_prefixes(Network *network) { |
| RoutePrefix *p; |
| |
| assert(network); |
| |
| HASHMAP_FOREACH(p, network->route_prefixes_by_section) |
| if (route_prefix_section_verify(p) < 0) |
| route_prefix_free(p); |
| } |
| |
| int config_parse_prefix( |
| 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) { |
| |
| _cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL; |
| Network *network = ASSERT_PTR(userdata); |
| union in_addr_union a; |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| |
| r = prefix_new_static(network, filename, section_line, &p); |
| if (r < 0) |
| return log_oom(); |
| |
| r = in_addr_prefix_from_string(rvalue, AF_INET6, &a, &p->prefixlen); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Prefix is invalid, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| (void) in6_addr_mask(&a.in6, p->prefixlen); |
| p->prefix = a.in6; |
| |
| TAKE_PTR(p); |
| return 0; |
| } |
| |
| int config_parse_prefix_boolean( |
| 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) { |
| |
| _cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL; |
| Network *network = ASSERT_PTR(userdata); |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| |
| r = prefix_new_static(network, filename, section_line, &p); |
| if (r < 0) |
| return log_oom(); |
| |
| r = parse_boolean(rvalue); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Failed to parse %s=, ignoring assignment: %s", lvalue, rvalue); |
| return 0; |
| } |
| |
| if (streq(lvalue, "OnLink")) |
| p->onlink = r; |
| else if (streq(lvalue, "AddressAutoconfiguration")) |
| p->address_auto_configuration = r; |
| else if (streq(lvalue, "Assign")) |
| p->assign = r; |
| else |
| assert_not_reached(); |
| |
| TAKE_PTR(p); |
| return 0; |
| } |
| |
| int config_parse_prefix_lifetime( |
| 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) { |
| |
| _cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL; |
| Network *network = ASSERT_PTR(userdata); |
| usec_t usec; |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| |
| r = prefix_new_static(network, filename, section_line, &p); |
| if (r < 0) |
| return log_oom(); |
| |
| r = parse_sec(rvalue, &usec); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Lifetime is invalid, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| if (usec != USEC_INFINITY && DIV_ROUND_UP(usec, USEC_PER_SEC) >= UINT32_MAX) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, |
| "Lifetime is too long, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| if (streq(lvalue, "PreferredLifetimeSec")) |
| p->preferred_lifetime = usec; |
| else if (streq(lvalue, "ValidLifetimeSec")) |
| p->valid_lifetime = usec; |
| else |
| assert_not_reached(); |
| |
| TAKE_PTR(p); |
| return 0; |
| } |
| |
| int config_parse_prefix_metric( |
| 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) { |
| |
| _cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL; |
| Network *network = ASSERT_PTR(userdata); |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| |
| r = prefix_new_static(network, filename, section_line, &p); |
| if (r < 0) |
| return log_oom(); |
| |
| r = safe_atou32(rvalue, &p->route_metric); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Failed to parse %s=, ignoring assignment: %s", |
| lvalue, rvalue); |
| return 0; |
| } |
| |
| TAKE_PTR(p); |
| return 0; |
| } |
| |
| int config_parse_prefix_token( |
| 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) { |
| |
| _cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL; |
| Network *network = ASSERT_PTR(userdata); |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| |
| r = prefix_new_static(network, filename, section_line, &p); |
| if (r < 0) |
| return log_oom(); |
| |
| r = config_parse_address_generation_type(unit, filename, line, section, section_line, |
| lvalue, ltype, rvalue, &p->tokens, userdata); |
| if (r < 0) |
| return r; |
| |
| TAKE_PTR(p); |
| return 0; |
| } |
| |
| int config_parse_route_prefix( |
| 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) { |
| |
| _cleanup_(route_prefix_free_or_set_invalidp) RoutePrefix *p = NULL; |
| Network *network = ASSERT_PTR(userdata); |
| union in_addr_union a; |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| |
| r = route_prefix_new_static(network, filename, section_line, &p); |
| if (r < 0) |
| return log_oom(); |
| |
| r = in_addr_prefix_from_string(rvalue, AF_INET6, &a, &p->prefixlen); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Route prefix is invalid, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| (void) in6_addr_mask(&a.in6, p->prefixlen); |
| p->prefix = a.in6; |
| |
| TAKE_PTR(p); |
| return 0; |
| } |
| |
| int config_parse_route_prefix_lifetime( |
| 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) { |
| |
| _cleanup_(route_prefix_free_or_set_invalidp) RoutePrefix *p = NULL; |
| Network *network = ASSERT_PTR(userdata); |
| usec_t usec; |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| |
| r = route_prefix_new_static(network, filename, section_line, &p); |
| if (r < 0) |
| return log_oom(); |
| |
| r = parse_sec(rvalue, &usec); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Route lifetime is invalid, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| if (usec != USEC_INFINITY && DIV_ROUND_UP(usec, USEC_PER_SEC) >= UINT32_MAX) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, |
| "Lifetime is too long, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| p->lifetime = usec; |
| |
| TAKE_PTR(p); |
| 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 = ASSERT_PTR(data); |
| int r; |
| |
| assert(filename); |
| assert(lvalue); |
| assert(rvalue); |
| |
| 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, val, |
| "Invalid %s= setting, ignoring assignment: %s", lvalue, rvalue); |
| return 0; |
| } |
| |
| *ra = val; |
| return 0; |
| } |
| |
| int config_parse_router_lifetime( |
| 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) { |
| |
| usec_t usec, *lifetime = ASSERT_PTR(data); |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| |
| if (isempty(rvalue)) { |
| *lifetime = RADV_DEFAULT_ROUTER_LIFETIME_USEC; |
| return 0; |
| } |
| |
| r = parse_sec(rvalue, &usec); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Failed to parse router lifetime, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| if (usec > 0) { |
| if (usec < RADV_MIN_ROUTER_LIFETIME_USEC) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, |
| "Router lifetime %s is too short, using %s.", |
| FORMAT_TIMESPAN(usec, USEC_PER_SEC), |
| FORMAT_TIMESPAN(RADV_MIN_ROUTER_LIFETIME_USEC, USEC_PER_SEC)); |
| usec = RADV_MIN_ROUTER_LIFETIME_USEC; |
| } else if (usec > RADV_MAX_ROUTER_LIFETIME_USEC) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, |
| "Router lifetime %s is too large, using %s.", |
| FORMAT_TIMESPAN(usec, USEC_PER_SEC), |
| FORMAT_TIMESPAN(RADV_MAX_ROUTER_LIFETIME_USEC, USEC_PER_SEC)); |
| usec = RADV_MAX_ROUTER_LIFETIME_USEC; |
| } |
| } |
| |
| *lifetime = usec; |
| 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; |
| } |
