/* SPDX-License-Identifier: LGPL-2.1+ */ #include #include "alloc-util.h" #include "conf-parser.h" #include "firewall-util.h" #include "memory-util.h" #include "missing_network.h" #include "netlink-util.h" #include "networkd-address.h" #include "networkd-manager.h" #include "parse-util.h" #include "set.h" #include "socket-util.h" #include "string-util.h" #include "strv.h" #include "utf8.h" #define ADDRESSES_PER_LINK_MAX 2048U #define STATIC_ADDRESSES_PER_NETWORK_MAX 1024U int generate_ipv6_eui_64_address(Link *link, struct in6_addr *ret) { assert(link); assert(ret); /* see RFC4291 section 2.5.1 */ ret->s6_addr[8] = link->mac.ether_addr_octet[0]; ret->s6_addr[8] ^= 1 << 1; ret->s6_addr[9] = link->mac.ether_addr_octet[1]; ret->s6_addr[10] = link->mac.ether_addr_octet[2]; ret->s6_addr[11] = 0xff; ret->s6_addr[12] = 0xfe; ret->s6_addr[13] = link->mac.ether_addr_octet[3]; ret->s6_addr[14] = link->mac.ether_addr_octet[4]; ret->s6_addr[15] = link->mac.ether_addr_octet[5]; return 0; } int address_new(Address **ret) { _cleanup_(address_freep) Address *address = NULL; address = new(Address, 1); if (!address) return -ENOMEM; *address = (Address) { .family = AF_UNSPEC, .scope = RT_SCOPE_UNIVERSE, .cinfo.ifa_prefered = CACHE_INFO_INFINITY_LIFE_TIME, .cinfo.ifa_valid = CACHE_INFO_INFINITY_LIFE_TIME, .duplicate_address_detection = ADDRESS_FAMILY_IPV6, .prefix_route = true, }; *ret = TAKE_PTR(address); return 0; } static int address_new_static(Network *network, const char *filename, unsigned section_line, Address **ret) { _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL; _cleanup_(address_freep) Address *address = NULL; int r; assert(network); assert(ret); assert(!!filename == (section_line > 0)); if (filename) { r = network_config_section_new(filename, section_line, &n); if (r < 0) return r; address = hashmap_get(network->addresses_by_section, n); if (address) { *ret = TAKE_PTR(address); return 0; } } if (network->n_static_addresses >= STATIC_ADDRESSES_PER_NETWORK_MAX) return -E2BIG; r = address_new(&address); if (r < 0) return r; address->network = network; LIST_APPEND(addresses, network->static_addresses, address); network->n_static_addresses++; if (filename) { address->section = TAKE_PTR(n); r = hashmap_ensure_allocated(&network->addresses_by_section, &network_config_hash_ops); if (r < 0) return r; r = hashmap_put(network->addresses_by_section, address->section, address); if (r < 0) return r; } *ret = TAKE_PTR(address); return 0; } void address_free(Address *address) { if (!address) return; if (address->network) { LIST_REMOVE(addresses, address->network->static_addresses, address); assert(address->network->n_static_addresses > 0); address->network->n_static_addresses--; if (address->section) hashmap_remove(address->network->addresses_by_section, address->section); } if (address->link && !address->acd) { set_remove(address->link->addresses, address); set_remove(address->link->addresses_foreign, address); if (in_addr_equal(AF_INET6, &address->in_addr, (const union in_addr_union *) &address->link->ipv6ll_address)) memzero(&address->link->ipv6ll_address, sizeof(struct in6_addr)); } sd_ipv4acd_unref(address->acd); network_config_section_free(address->section); free(address->label); free(address); } static uint32_t address_prefix(const Address *a) { assert(a); /* make sure we don't try to shift by 32. * See ISO/IEC 9899:TC3 ยง 6.5.7.3. */ if (a->prefixlen == 0) return 0; if (a->in_addr_peer.in.s_addr != 0) return be32toh(a->in_addr_peer.in.s_addr) >> (32 - a->prefixlen); else return be32toh(a->in_addr.in.s_addr) >> (32 - a->prefixlen); } static void address_hash_func(const Address *a, struct siphash *state) { assert(a); siphash24_compress(&a->family, sizeof(a->family), state); switch (a->family) { case AF_INET: siphash24_compress(&a->prefixlen, sizeof(a->prefixlen), state); /* peer prefix */ uint32_t prefix = address_prefix(a); siphash24_compress(&prefix, sizeof(prefix), state); _fallthrough_; case AF_INET6: /* local address */ siphash24_compress(&a->in_addr, FAMILY_ADDRESS_SIZE(a->family), state); break; default: /* treat any other address family as AF_UNSPEC */ break; } } static int address_compare_func(const Address *a1, const Address *a2) { int r; r = CMP(a1->family, a2->family); if (r != 0) return r; switch (a1->family) { /* use the same notion of equality as the kernel does */ case AF_INET: r = CMP(a1->prefixlen, a2->prefixlen); if (r != 0) return r; uint32_t prefix1 = address_prefix(a1); uint32_t prefix2 = address_prefix(a2); r = CMP(prefix1, prefix2); if (r != 0) return r; _fallthrough_; case AF_INET6: return memcmp(&a1->in_addr, &a2->in_addr, FAMILY_ADDRESS_SIZE(a1->family)); default: /* treat any other address family as AF_UNSPEC */ return 0; } } DEFINE_HASH_OPS(address_hash_ops, Address, address_hash_func, address_compare_func); bool address_equal(Address *a1, Address *a2) { if (a1 == a2) return true; if (!a1 || !a2) return false; return address_compare_func(a1, a2) == 0; } static int address_establish(Address *address, Link *link) { bool masq; int r; assert(address); assert(link); masq = link->network && link->network->ip_masquerade && address->family == AF_INET && address->scope < RT_SCOPE_LINK; /* Add firewall entry if this is requested */ if (address->ip_masquerade_done != masq) { union in_addr_union masked = address->in_addr; in_addr_mask(address->family, &masked, address->prefixlen); r = fw_add_masquerade(masq, AF_INET, 0, &masked, address->prefixlen, NULL, NULL, 0); if (r < 0) return r; address->ip_masquerade_done = masq; } return 0; } static int address_add_internal(Link *link, Set **addresses, int family, const union in_addr_union *in_addr, unsigned char prefixlen, Address **ret) { _cleanup_(address_freep) Address *address = NULL; int r; assert(link); assert(addresses); assert(in_addr); r = address_new(&address); if (r < 0) return r; address->family = family; address->in_addr = *in_addr; address->prefixlen = prefixlen; /* Consider address tentative until we get the real flags from the kernel */ address->flags = IFA_F_TENTATIVE; r = set_ensure_allocated(addresses, &address_hash_ops); if (r < 0) return r; r = set_put(*addresses, address); if (r < 0) return r; if (r == 0) return -EEXIST; address->link = link; if (ret) *ret = address; address = NULL; return 0; } int address_add_foreign(Link *link, int family, const union in_addr_union *in_addr, unsigned char prefixlen, Address **ret) { return address_add_internal(link, &link->addresses_foreign, family, in_addr, prefixlen, ret); } int address_add(Link *link, int family, const union in_addr_union *in_addr, unsigned char prefixlen, Address **ret) { Address *address; int r; r = address_get(link, family, in_addr, prefixlen, &address); if (r == -ENOENT) { /* Address does not exist, create a new one */ r = address_add_internal(link, &link->addresses, family, in_addr, prefixlen, &address); if (r < 0) return r; } else if (r == 0) { /* Take over a foreign address */ r = set_ensure_allocated(&link->addresses, &address_hash_ops); if (r < 0) return r; r = set_put(link->addresses, address); if (r < 0) return r; set_remove(link->addresses_foreign, address); } else if (r == 1) { /* Already exists, do nothing */ ; } else return r; if (ret) *ret = address; return 0; } static int address_release(Address *address) { int r; assert(address); assert(address->link); /* Remove masquerading firewall entry if it was added */ if (address->ip_masquerade_done) { union in_addr_union masked = address->in_addr; in_addr_mask(address->family, &masked, address->prefixlen); r = fw_add_masquerade(false, AF_INET, 0, &masked, address->prefixlen, NULL, NULL, 0); if (r < 0) return r; address->ip_masquerade_done = false; } return 0; } int address_update( Address *address, unsigned char flags, unsigned char scope, const struct ifa_cacheinfo *cinfo) { bool ready; int r; assert(address); assert(cinfo); assert_return(address->link, 1); if (IN_SET(address->link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) return 1; ready = address_is_ready(address); address->flags = flags; address->scope = scope; address->cinfo = *cinfo; link_update_operstate(address->link, true); link_check_ready(address->link); if (!ready && address_is_ready(address) && address->family == AF_INET6 && in_addr_is_link_local(AF_INET6, &address->in_addr) > 0 && in_addr_is_null(AF_INET6, (const union in_addr_union*) &address->link->ipv6ll_address) > 0) { r = link_ipv6ll_gained(address->link, &address->in_addr.in6); if (r < 0) return r; } return 0; } int address_drop(Address *address) { Link *link; bool ready; int r; assert(address); ready = address_is_ready(address); link = address->link; r = address_release(address); if (r < 0) log_link_warning_errno(link, r, "Failed to disable IP masquerading, ignoring: %m"); address_free(address); link_update_operstate(link, true); if (link && !ready) link_check_ready(link); return 0; } int address_get(Link *link, int family, const union in_addr_union *in_addr, unsigned char prefixlen, Address **ret) { Address address, *existing; assert(link); assert(in_addr); address = (Address) { .family = family, .in_addr = *in_addr, .prefixlen = prefixlen, }; existing = set_get(link->addresses, &address); if (existing) { if (ret) *ret = existing; return 1; } existing = set_get(link->addresses_foreign, &address); if (existing) { if (ret) *ret = existing; return 0; } return -ENOENT; } static int address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { int r; assert(m); assert(link); assert(link->ifname); if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) return 1; r = sd_netlink_message_get_errno(m); if (r < 0 && r != -EADDRNOTAVAIL) log_link_message_warning_errno(link, m, r, "Could not drop address"); return 1; } int address_remove( Address *address, Link *link, link_netlink_message_handler_t callback) { _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; int r; assert(address); assert(IN_SET(address->family, AF_INET, AF_INET6)); assert(link); assert(link->ifindex > 0); assert(link->manager); assert(link->manager->rtnl); if (DEBUG_LOGGING) { _cleanup_free_ char *b = NULL; (void) in_addr_to_string(address->family, &address->in_addr, &b); log_link_debug(link, "Removing address %s", strna(b)); } r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_DELADDR, link->ifindex, address->family); if (r < 0) return log_link_error_errno(link, r, "Could not allocate RTM_DELADDR message: %m"); r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen); if (r < 0) return log_link_error_errno(link, r, "Could not set prefixlen: %m"); r = netlink_message_append_in_addr_union(req, IFA_LOCAL, address->family, &address->in_addr); if (r < 0) return log_link_error_errno(link, r, "Could not append IFA_LOCAL attribute: %m"); r = netlink_call_async(link->manager->rtnl, NULL, req, callback ?: address_remove_handler, link_netlink_destroy_callback, link); if (r < 0) return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); link_ref(link); return 0; } static int address_acquire(Link *link, Address *original, Address **ret) { union in_addr_union in_addr = IN_ADDR_NULL; struct in_addr broadcast = {}; _cleanup_(address_freep) Address *na = NULL; int r; assert(link); assert(original); assert(ret); /* Something useful was configured? just use it */ r = in_addr_is_null(original->family, &original->in_addr); if (r <= 0) return r; /* The address is configured to be 0.0.0.0 or [::] by the user? * Then let's acquire something more useful from the pool. */ r = manager_address_pool_acquire(link->manager, original->family, original->prefixlen, &in_addr); if (r < 0) return r; if (r == 0) return -EBUSY; if (original->family == AF_INET) { /* Pick first address in range for ourselves ... */ in_addr.in.s_addr = in_addr.in.s_addr | htobe32(1); /* .. and use last as broadcast address */ if (original->prefixlen > 30) broadcast.s_addr = 0; else broadcast.s_addr = in_addr.in.s_addr | htobe32(0xFFFFFFFFUL >> original->prefixlen); } else if (original->family == AF_INET6) in_addr.in6.s6_addr[15] |= 1; r = address_new(&na); if (r < 0) return r; na->family = original->family; na->prefixlen = original->prefixlen; na->scope = original->scope; na->cinfo = original->cinfo; if (original->label) { na->label = strdup(original->label); if (!na->label) return -ENOMEM; } na->broadcast = broadcast; na->in_addr = in_addr; LIST_PREPEND(addresses, link->pool_addresses, na); *ret = TAKE_PTR(na); return 0; } int address_configure( Address *address, Link *link, link_netlink_message_handler_t callback, bool update) { _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; int r; assert(address); assert(IN_SET(address->family, AF_INET, AF_INET6)); assert(link); assert(link->ifindex > 0); assert(link->manager); assert(link->manager->rtnl); assert(callback); /* If this is a new address, then refuse adding more than the limit */ if (address_get(link, address->family, &address->in_addr, address->prefixlen, NULL) <= 0 && set_size(link->addresses) >= ADDRESSES_PER_LINK_MAX) return log_link_error_errno(link, SYNTHETIC_ERRNO(E2BIG), "Too many addresses are configured, refusing: %m"); r = address_acquire(link, address, &address); if (r < 0) return log_link_error_errno(link, r, "Failed to acquire an address from pool: %m"); if (update) r = sd_rtnl_message_new_addr_update(link->manager->rtnl, &req, link->ifindex, address->family); else r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_NEWADDR, link->ifindex, address->family); if (r < 0) return log_link_error_errno(link, r, "Could not allocate RTM_NEWADDR message: %m"); r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen); if (r < 0) return log_link_error_errno(link, r, "Could not set prefixlen: %m"); address->flags |= IFA_F_PERMANENT; if (address->home_address) address->flags |= IFA_F_HOMEADDRESS; if (!FLAGS_SET(address->duplicate_address_detection, ADDRESS_FAMILY_IPV6)) address->flags |= IFA_F_NODAD; if (address->manage_temporary_address) address->flags |= IFA_F_MANAGETEMPADDR; if (!address->prefix_route) address->flags |= IFA_F_NOPREFIXROUTE; if (address->autojoin) address->flags |= IFA_F_MCAUTOJOIN; r = sd_rtnl_message_addr_set_flags(req, (address->flags & 0xff)); if (r < 0) return log_link_error_errno(link, r, "Could not set flags: %m"); if (address->flags & ~0xff) { r = sd_netlink_message_append_u32(req, IFA_FLAGS, address->flags); if (r < 0) return log_link_error_errno(link, r, "Could not set extended flags: %m"); } r = sd_rtnl_message_addr_set_scope(req, address->scope); if (r < 0) return log_link_error_errno(link, r, "Could not set scope: %m"); r = netlink_message_append_in_addr_union(req, IFA_LOCAL, address->family, &address->in_addr); if (r < 0) return log_link_error_errno(link, r, "Could not append IFA_LOCAL attribute: %m"); if (in_addr_is_null(address->family, &address->in_addr_peer) == 0) { r = netlink_message_append_in_addr_union(req, IFA_ADDRESS, address->family, &address->in_addr_peer); if (r < 0) return log_link_error_errno(link, r, "Could not append IFA_ADDRESS attribute: %m"); } else if (address->family == AF_INET && address->prefixlen <= 30) { r = sd_netlink_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast); if (r < 0) return log_link_error_errno(link, r, "Could not append IFA_BROADCAST attribute: %m"); } if (address->label) { r = sd_netlink_message_append_string(req, IFA_LABEL, address->label); if (r < 0) return log_link_error_errno(link, r, "Could not append IFA_LABEL attribute: %m"); } r = sd_netlink_message_append_cache_info(req, IFA_CACHEINFO, &address->cinfo); if (r < 0) return log_link_error_errno(link, r, "Could not append IFA_CACHEINFO attribute: %m"); r = address_establish(address, link); if (r < 0) log_link_warning_errno(link, r, "Could not enable IP masquerading, ignoring: %m"); r = netlink_call_async(link->manager->rtnl, NULL, req, callback, link_netlink_destroy_callback, link); if (r < 0) { address_release(address); return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); } link_ref(link); if (address->family == AF_INET6 && !in_addr_is_null(address->family, &address->in_addr_peer)) r = address_add(link, address->family, &address->in_addr_peer, address->prefixlen, NULL); else r = address_add(link, address->family, &address->in_addr, address->prefixlen, NULL); if (r < 0) { address_release(address); return log_link_error_errno(link, r, "Could not add address: %m"); } if (address->acd) { assert(address->family == AF_INET); if (DEBUG_LOGGING) { _cleanup_free_ char *pretty = NULL; (void) in_addr_to_string(address->family, &address->in_addr, &pretty); log_link_debug(link, "Starting IPv4ACD client. Probing address %s", strna(pretty)); } r = sd_ipv4acd_start(address->acd, true); if (r < 0) log_link_warning_errno(link, r, "Failed to start IPv4ACD client, ignoring: %m"); } return 1; } static void static_address_on_acd(sd_ipv4acd *acd, int event, void *userdata) { _cleanup_free_ char *pretty = NULL; Address *address; Link *link; int r; assert(acd); assert(userdata); address = (Address *) userdata; link = address->link; (void) in_addr_to_string(address->family, &address->in_addr, &pretty); switch (event) { case SD_IPV4ACD_EVENT_STOP: log_link_debug(link, "Stopping ACD client..."); return; case SD_IPV4ACD_EVENT_BIND: log_link_debug(link, "Successfully claimed address %s", strna(pretty)); link_check_ready(link); break; case SD_IPV4ACD_EVENT_CONFLICT: log_link_warning(link, "DAD conflict. Dropping address %s", strna(pretty)); r = address_remove(address, link, NULL); if (r < 0) log_link_error_errno(link, r, "Failed to drop DAD conflicted address %s", strna(pretty));; link_check_ready(link); break; default: assert_not_reached("Invalid IPv4ACD event."); } sd_ipv4acd_stop(acd); return; } int configure_ipv4_duplicate_address_detection(Link *link, Address *address) { int r; assert(link); assert(address); assert(address->family == AF_INET); assert(!address->link && address->network); address->link = link; r = sd_ipv4acd_new(&address->acd); if (r < 0) return r; r = sd_ipv4acd_attach_event(address->acd, NULL, 0); if (r < 0) return r; r = sd_ipv4acd_set_ifindex(address->acd, link->ifindex); if (r < 0) return r; r = sd_ipv4acd_set_mac(address->acd, &link->mac); if (r < 0) return r; r = sd_ipv4acd_set_address(address->acd, &address->in_addr.in); if (r < 0) return r; r = sd_ipv4acd_set_callback(address->acd, static_address_on_acd, address); if (r < 0) return r; return 0; } int config_parse_broadcast( 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; _cleanup_(address_free_or_set_invalidp) Address *n = NULL; int r; assert(filename); assert(section); assert(lvalue); assert(rvalue); assert(data); r = address_new_static(network, filename, section_line, &n); if (r < 0) return r; if (n->family == AF_INET6) { log_syntax(unit, LOG_ERR, filename, line, 0, "Broadcast is not valid for IPv6 addresses, ignoring assignment: %s", rvalue); return 0; } r = in_addr_from_string(AF_INET, rvalue, (union in_addr_union*) &n->broadcast); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Broadcast is invalid, ignoring assignment: %s", rvalue); return 0; } n->family = AF_INET; n = NULL; return 0; } int config_parse_address(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; _cleanup_(address_free_or_set_invalidp) Address *n = NULL; union in_addr_union buffer; unsigned char prefixlen; int r, f; assert(filename); assert(section); assert(lvalue); assert(rvalue); assert(data); if (streq(section, "Network")) { /* we are not in an Address section, so treat * this as the special '0' section */ r = address_new_static(network, NULL, 0, &n); } else r = address_new_static(network, filename, section_line, &n); if (r < 0) return r; /* Address=address/prefixlen */ r = in_addr_prefix_from_string_auto_internal(rvalue, PREFIXLEN_REFUSE, &f, &buffer, &prefixlen); if (r == -ENOANO) { log_syntax(unit, LOG_ERR, filename, line, r, "An address '%s' is specified without prefix length. " "The behavior of parsing addresses without prefix length will be changed in the future release. " "Please specify prefix length explicitly.", rvalue); r = in_addr_prefix_from_string_auto_internal(rvalue, PREFIXLEN_LEGACY, &f, &buffer, &prefixlen); } if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Invalid address '%s', ignoring assignment: %m", rvalue); return 0; } if (n->family != AF_UNSPEC && f != n->family) { log_syntax(unit, LOG_ERR, filename, line, 0, "Address is incompatible, ignoring assignment: %s", rvalue); return 0; } if (in_addr_is_null(f, &buffer)) { /* Will use address from address pool. Note that for ipv6 case, prefix of the address * pool is 8, but 40 bit is used by the global ID and 16 bit by the subnet ID. So, * let's limit the prefix length to 64 or larger. See RFC4193. */ if ((f == AF_INET && prefixlen < 8) || (f == AF_INET6 && prefixlen < 64)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Null address with invalid prefixlen='%u', ignoring assignment: %s", prefixlen, rvalue); return 0; } } n->family = f; n->prefixlen = prefixlen; if (streq(lvalue, "Address")) n->in_addr = buffer; else n->in_addr_peer = buffer; if (n->family == AF_INET && n->broadcast.s_addr == 0 && n->prefixlen <= 30) n->broadcast.s_addr = n->in_addr.in.s_addr | htobe32(0xfffffffflu >> n->prefixlen); n = NULL; return 0; } int config_parse_label( 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_(address_free_or_set_invalidp) Address *n = NULL; Network *network = userdata; int r; assert(filename); assert(section); assert(lvalue); assert(rvalue); assert(data); r = address_new_static(network, filename, section_line, &n); if (r < 0) return r; if (!address_label_valid(rvalue)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Interface label is too long or invalid, ignoring assignment: %s", rvalue); return 0; } r = free_and_strdup(&n->label, rvalue); if (r < 0) return log_oom(); n = NULL; return 0; } int config_parse_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) { Network *network = userdata; _cleanup_(address_free_or_set_invalidp) Address *n = NULL; uint32_t k; int r; assert(filename); assert(section); assert(lvalue); assert(rvalue); assert(data); r = address_new_static(network, filename, section_line, &n); if (r < 0) return r; /* We accept only "forever", "infinity", empty, or "0". */ if (STR_IN_SET(rvalue, "forever", "infinity", "")) k = CACHE_INFO_INFINITY_LIFE_TIME; else if (streq(rvalue, "0")) k = 0; else { log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid PreferredLifetime= value, ignoring: %s", rvalue); return 0; } n->cinfo.ifa_prefered = k; TAKE_PTR(n); return 0; } int config_parse_address_flags(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; _cleanup_(address_free_or_set_invalidp) Address *n = NULL; int r; assert(filename); assert(section); assert(lvalue); assert(rvalue); assert(data); r = address_new_static(network, filename, section_line, &n); if (r < 0) return r; r = parse_boolean(rvalue); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s=, ignoring: %s", lvalue, rvalue); return 0; } if (streq(lvalue, "HomeAddress")) n->home_address = r; else if (streq(lvalue, "ManageTemporaryAddress")) n->manage_temporary_address = r; else if (streq(lvalue, "PrefixRoute")) n->prefix_route = !r; else if (streq(lvalue, "AddPrefixRoute")) n->prefix_route = r; else if (streq(lvalue, "AutoJoin")) n->autojoin = r; else assert_not_reached("Invalid address flag type."); n = NULL; return 0; } int config_parse_address_scope(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; _cleanup_(address_free_or_set_invalidp) Address *n = NULL; int r; assert(filename); assert(section); assert(lvalue); assert(rvalue); assert(data); r = address_new_static(network, filename, section_line, &n); if (r < 0) return r; if (streq(rvalue, "host")) n->scope = RT_SCOPE_HOST; else if (streq(rvalue, "link")) n->scope = RT_SCOPE_LINK; else if (streq(rvalue, "global")) n->scope = RT_SCOPE_UNIVERSE; else { r = safe_atou8(rvalue , &n->scope); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Could not parse address scope \"%s\", ignoring assignment: %m", rvalue); return 0; } } n->scope_set = true; n = NULL; return 0; } int config_parse_duplicate_address_detection( 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; _cleanup_(address_free_or_set_invalidp) Address *n = NULL; AddressFamily a; int r; assert(filename); assert(section); assert(lvalue); assert(rvalue); assert(data); r = address_new_static(network, filename, section_line, &n); if (r < 0) return r; r = parse_boolean(rvalue); if (r >= 0) { log_syntax(unit, LOG_WARNING, filename, line, 0, "For historical reasons, %s=%s means %s=%s. " "Please use 'both', 'ipv4', 'ipv6' or 'none' instead.", lvalue, rvalue, lvalue, r ? "none" : "both"); n->duplicate_address_detection = r ? ADDRESS_FAMILY_NO : ADDRESS_FAMILY_YES; n = NULL; return 0; } a = duplicate_address_detection_address_family_from_string(rvalue); if (a < 0) { log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL), "Failed to parse %s=, ignoring: %s", lvalue, rvalue); return 0; } n->duplicate_address_detection = a; n = NULL; return 0; } bool address_is_ready(const Address *a) { assert(a); return !(a->flags & IFA_F_TENTATIVE); } int address_section_verify(Address *address) { if (section_is_invalid(address->section)) return -EINVAL; if (address->family == AF_UNSPEC) { assert(address->section); return log_warning_errno(SYNTHETIC_ERRNO(EINVAL), "%s: Address section without Address= field configured. " "Ignoring [Address] section from line %u.", address->section->filename, address->section->line); } if (!address->scope_set && in_addr_is_localhost(address->family, &address->in_addr) > 0) address->scope = RT_SCOPE_HOST; return 0; }