diff options
Diffstat (limited to 'src/grp-network/libnetworkd-core/networkd-network.c')
| -rw-r--r-- | src/grp-network/libnetworkd-core/networkd-network.c | 1137 |
1 files changed, 1137 insertions, 0 deletions
diff --git a/src/grp-network/libnetworkd-core/networkd-network.c b/src/grp-network/libnetworkd-core/networkd-network.c new file mode 100644 index 0000000000..84409772ff --- /dev/null +++ b/src/grp-network/libnetworkd-core/networkd-network.c @@ -0,0 +1,1137 @@ +/*** + This file is part of systemd. + + Copyright 2013 Tom Gundersen <teg@jklm.no> + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <ctype.h> +#include <net/if.h> + +#include "systemd-basic/alloc-util.h" +#include "systemd-basic/conf-files.h" +#include "systemd-basic/fd-util.h" +#include "systemd-basic/hostname-util.h" +#include "systemd-basic/parse-util.h" +#include "systemd-basic/set.h" +#include "systemd-basic/stat-util.h" +#include "systemd-basic/string-table.h" +#include "systemd-basic/string-util.h" +#include "systemd-basic/util.h" +#include "systemd-network/network-internal.h" +#include "systemd-shared/conf-parser.h" +#include "systemd-shared/dns-domain.h" + +#include "networkd-network.h" +#include "networkd.h" + +static int network_load_one(Manager *manager, const char *filename) { + _cleanup_network_free_ Network *network = NULL; + _cleanup_fclose_ FILE *file = NULL; + char *d; + const char *dropin_dirname; + Route *route; + Address *address; + int r; + + assert(manager); + assert(filename); + + file = fopen(filename, "re"); + if (!file) { + if (errno == ENOENT) + return 0; + + return -errno; + } + + if (null_or_empty_fd(fileno(file))) { + log_debug("Skipping empty file: %s", filename); + return 0; + } + + network = new0(Network, 1); + if (!network) + return log_oom(); + + network->manager = manager; + + LIST_HEAD_INIT(network->static_addresses); + LIST_HEAD_INIT(network->static_routes); + LIST_HEAD_INIT(network->static_fdb_entries); + + network->stacked_netdevs = hashmap_new(&string_hash_ops); + if (!network->stacked_netdevs) + return log_oom(); + + network->addresses_by_section = hashmap_new(NULL); + if (!network->addresses_by_section) + return log_oom(); + + network->routes_by_section = hashmap_new(NULL); + if (!network->routes_by_section) + return log_oom(); + + network->fdb_entries_by_section = hashmap_new(NULL); + if (!network->fdb_entries_by_section) + return log_oom(); + + network->filename = strdup(filename); + if (!network->filename) + return log_oom(); + + network->name = strdup(basename(filename)); + if (!network->name) + return log_oom(); + + d = strrchr(network->name, '.'); + if (!d) + return -EINVAL; + + assert(streq(d, ".network")); + + *d = '\0'; + + network->dhcp = ADDRESS_FAMILY_NO; + network->dhcp_use_ntp = true; + network->dhcp_use_dns = true; + network->dhcp_use_hostname = true; + network->dhcp_use_routes = true; + network->dhcp_send_hostname = true; + network->dhcp_route_metric = DHCP_ROUTE_METRIC; + network->dhcp_client_identifier = DHCP_CLIENT_ID_DUID; + network->dhcp_route_table = RT_TABLE_MAIN; + + network->dhcp_server_emit_dns = true; + network->dhcp_server_emit_ntp = true; + network->dhcp_server_emit_router = true; + network->dhcp_server_emit_timezone = true; + + network->use_bpdu = true; + network->allow_port_to_be_root = true; + network->unicast_flood = true; + + network->lldp_mode = LLDP_MODE_ROUTERS_ONLY; + + network->llmnr = RESOLVE_SUPPORT_YES; + network->mdns = RESOLVE_SUPPORT_NO; + network->dnssec_mode = _DNSSEC_MODE_INVALID; + + network->link_local = ADDRESS_FAMILY_IPV6; + + network->ipv6_privacy_extensions = IPV6_PRIVACY_EXTENSIONS_NO; + network->ipv6_accept_ra = -1; + network->ipv6_dad_transmits = -1; + network->ipv6_hop_limit = -1; + network->duid.type = _DUID_TYPE_INVALID; + network->proxy_arp = -1; + network->arp = -1; + network->ipv6_accept_ra_use_dns = true; + network->ipv6_accept_ra_route_table = RT_TABLE_MAIN; + + dropin_dirname = strjoina(network->name, ".network.d"); + + r = config_parse_many(filename, network_dirs, dropin_dirname, + "Match\0" + "Link\0" + "Network\0" + "Address\0" + "Route\0" + "DHCP\0" + "DHCPv4\0" /* compat */ + "DHCPServer\0" + "IPv6AcceptRA\0" + "Bridge\0" + "BridgeFDB\0" + "BridgeVLAN\0", + config_item_perf_lookup, network_network_gperf_lookup, + false, network); + if (r < 0) + return r; + + /* IPMasquerade=yes implies IPForward=yes */ + if (network->ip_masquerade) + network->ip_forward |= ADDRESS_FAMILY_IPV4; + + LIST_PREPEND(networks, manager->networks, network); + + r = hashmap_ensure_allocated(&manager->networks_by_name, &string_hash_ops); + if (r < 0) + return r; + + r = hashmap_put(manager->networks_by_name, network->name, network); + if (r < 0) + return r; + + LIST_FOREACH(routes, route, network->static_routes) { + if (!route->family) { + log_warning("Route section without Gateway field configured in %s. " + "Ignoring", filename); + return 0; + } + } + + LIST_FOREACH(addresses, address, network->static_addresses) { + if (!address->family) { + log_warning("Address section without Address field configured in %s. " + "Ignoring", filename); + return 0; + } + } + + network = NULL; + + return 0; +} + +int network_load(Manager *manager) { + Network *network; + _cleanup_strv_free_ char **files = NULL; + char **f; + int r; + + assert(manager); + + while ((network = manager->networks)) + network_free(network); + + r = conf_files_list_strv(&files, ".network", NULL, network_dirs); + if (r < 0) + return log_error_errno(r, "Failed to enumerate network files: %m"); + + STRV_FOREACH_BACKWARDS(f, files) { + r = network_load_one(manager, *f); + if (r < 0) + return r; + } + + return 0; +} + +void network_free(Network *network) { + NetDev *netdev; + Route *route; + Address *address; + FdbEntry *fdb_entry; + Iterator i; + + if (!network) + return; + + free(network->filename); + + free(network->match_mac); + strv_free(network->match_path); + strv_free(network->match_driver); + strv_free(network->match_type); + strv_free(network->match_name); + + free(network->description); + free(network->dhcp_vendor_class_identifier); + free(network->dhcp_hostname); + + free(network->mac); + + strv_free(network->ntp); + strv_free(network->dns); + strv_free(network->search_domains); + strv_free(network->route_domains); + strv_free(network->bind_carrier); + + netdev_unref(network->bridge); + netdev_unref(network->bond); + netdev_unref(network->vrf); + + HASHMAP_FOREACH(netdev, network->stacked_netdevs, i) { + hashmap_remove(network->stacked_netdevs, netdev->ifname); + netdev_unref(netdev); + } + hashmap_free(network->stacked_netdevs); + + while ((route = network->static_routes)) + route_free(route); + + while ((address = network->static_addresses)) + address_free(address); + + while ((fdb_entry = network->static_fdb_entries)) + fdb_entry_free(fdb_entry); + + hashmap_free(network->addresses_by_section); + hashmap_free(network->routes_by_section); + hashmap_free(network->fdb_entries_by_section); + + if (network->manager) { + if (network->manager->networks) + LIST_REMOVE(networks, network->manager->networks, network); + + if (network->manager->networks_by_name) + hashmap_remove(network->manager->networks_by_name, network->name); + } + + free(network->name); + + condition_free_list(network->match_host); + condition_free_list(network->match_virt); + condition_free_list(network->match_kernel); + condition_free_list(network->match_arch); + + free(network->dhcp_server_timezone); + free(network->dhcp_server_dns); + free(network->dhcp_server_ntp); + + set_free_free(network->dnssec_negative_trust_anchors); + + free(network); +} + +int network_get_by_name(Manager *manager, const char *name, Network **ret) { + Network *network; + + assert(manager); + assert(name); + assert(ret); + + network = hashmap_get(manager->networks_by_name, name); + if (!network) + return -ENOENT; + + *ret = network; + + return 0; +} + +int network_get(Manager *manager, struct udev_device *device, + const char *ifname, const struct ether_addr *address, + Network **ret) { + Network *network; + struct udev_device *parent; + const char *path = NULL, *parent_driver = NULL, *driver = NULL, *devtype = NULL; + + assert(manager); + assert(ret); + + if (device) { + path = udev_device_get_property_value(device, "ID_PATH"); + + parent = udev_device_get_parent(device); + if (parent) + parent_driver = udev_device_get_driver(parent); + + driver = udev_device_get_property_value(device, "ID_NET_DRIVER"); + + devtype = udev_device_get_devtype(device); + } + + LIST_FOREACH(networks, network, manager->networks) { + if (net_match_config(network->match_mac, network->match_path, + network->match_driver, network->match_type, + network->match_name, network->match_host, + network->match_virt, network->match_kernel, + network->match_arch, + address, path, parent_driver, driver, + devtype, ifname)) { + if (network->match_name && device) { + const char *attr; + uint8_t name_assign_type = NET_NAME_UNKNOWN; + + attr = udev_device_get_sysattr_value(device, "name_assign_type"); + if (attr) + (void) safe_atou8(attr, &name_assign_type); + + if (name_assign_type == NET_NAME_ENUM) + log_warning("%s: found matching network '%s', based on potentially unpredictable ifname", + ifname, network->filename); + else + log_debug("%s: found matching network '%s'", ifname, network->filename); + } else + log_debug("%s: found matching network '%s'", ifname, network->filename); + + *ret = network; + return 0; + } + } + + *ret = NULL; + + return -ENOENT; +} + +int network_apply(Manager *manager, Network *network, Link *link) { + int r; + + assert(manager); + assert(network); + assert(link); + + link->network = network; + + if (network->ipv4ll_route) { + Route *route; + + r = route_new_static(network, 0, &route); + if (r < 0) + return r; + + r = inet_pton(AF_INET, "169.254.0.0", &route->dst.in); + if (r == 0) + return -EINVAL; + if (r < 0) + return -errno; + + route->family = AF_INET; + route->dst_prefixlen = 16; + route->scope = RT_SCOPE_LINK; + route->priority = IPV4LL_ROUTE_METRIC; + route->protocol = RTPROT_STATIC; + } + + if (!strv_isempty(network->dns) || + !strv_isempty(network->ntp) || + !strv_isempty(network->search_domains) || + !strv_isempty(network->route_domains)) + link_dirty(link); + + return 0; +} + +bool network_has_static_ipv6_addresses(Network *network) { + Address *address; + + assert(network); + + LIST_FOREACH(addresses, address, network->static_addresses) { + if (address->family == AF_INET6) + return true; + } + + return false; +} + +int config_parse_netdev(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_free_ char *kind_string = NULL; + char *p; + NetDev *netdev; + NetDevKind kind; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + kind_string = strdup(lvalue); + if (!kind_string) + return log_oom(); + + /* the keys are CamelCase versions of the kind */ + for (p = kind_string; *p; p++) + *p = tolower(*p); + + kind = netdev_kind_from_string(kind_string); + if (kind == _NETDEV_KIND_INVALID) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid NetDev kind: %s", lvalue); + return 0; + } + + r = netdev_get(network->manager, rvalue, &netdev); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "%s could not be found, ignoring assignment: %s", lvalue, rvalue); + return 0; + } + + if (netdev->kind != kind) { + log_syntax(unit, LOG_ERR, filename, line, 0, "NetDev is not a %s, ignoring assignment: %s", lvalue, rvalue); + return 0; + } + + switch (kind) { + case NETDEV_KIND_BRIDGE: + network->bridge = netdev; + + break; + case NETDEV_KIND_BOND: + network->bond = netdev; + + break; + case NETDEV_KIND_VRF: + network->vrf = netdev; + + break; + case NETDEV_KIND_VLAN: + case NETDEV_KIND_MACVLAN: + case NETDEV_KIND_MACVTAP: + case NETDEV_KIND_IPVLAN: + case NETDEV_KIND_VXLAN: + case NETDEV_KIND_VCAN: + r = hashmap_put(network->stacked_netdevs, netdev->ifname, netdev); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Can not add NetDev '%s' to network: %m", rvalue); + return 0; + } + + break; + default: + assert_not_reached("Can not parse NetDev"); + } + + netdev_ref(netdev); + + return 0; +} + +int config_parse_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) { + + const char *p; + Network *n = data; + int r; + + assert(n); + assert(lvalue); + assert(rvalue); + + if (isempty(rvalue)) { + n->search_domains = strv_free(n->search_domains); + n->route_domains = strv_free(n->route_domains); + return 0; + } + + p = rvalue; + for (;;) { + _cleanup_free_ char *w = NULL, *normalized = NULL; + const char *domain; + bool is_route; + + r = extract_first_word(&p, &w, NULL, 0); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract search or route domain, ignoring: %s", rvalue); + break; + } + if (r == 0) + break; + + is_route = w[0] == '~'; + domain = is_route ? w + 1 : w; + + if (dns_name_is_root(domain) || streq(domain, "*")) { + /* If the root domain appears as is, or the special token "*" is found, we'll consider this as + * routing domain, unconditionally. */ + is_route = true; + domain = "."; /* make sure we don't allow empty strings, thus write the root domain as "." */ + + } else { + r = dns_name_normalize(domain, &normalized); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "'%s' is not a valid domain name, ignoring.", domain); + continue; + } + + domain = normalized; + + if (is_localhost(domain)) { + log_syntax(unit, LOG_ERR, filename, line, 0, "'localhost' domain names may not be configure as search or route domains, ignoring assignment: %s", domain); + continue; + } + } + + if (is_route) { + r = strv_extend(&n->route_domains, domain); + if (r < 0) + return log_oom(); + + } else { + r = strv_extend(&n->search_domains, domain); + if (r < 0) + return log_oom(); + } + } + + strv_uniq(n->route_domains); + strv_uniq(n->search_domains); + + return 0; +} + +int config_parse_tunnel(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; + NetDev *netdev; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + r = netdev_get(network->manager, rvalue, &netdev); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Tunnel is invalid, ignoring assignment: %s", rvalue); + return 0; + } + + if (netdev->kind != NETDEV_KIND_IPIP && + netdev->kind != NETDEV_KIND_SIT && + netdev->kind != NETDEV_KIND_GRE && + netdev->kind != NETDEV_KIND_GRETAP && + netdev->kind != NETDEV_KIND_IP6GRE && + netdev->kind != NETDEV_KIND_IP6GRETAP && + netdev->kind != NETDEV_KIND_VTI && + netdev->kind != NETDEV_KIND_VTI6 && + netdev->kind != NETDEV_KIND_IP6TNL + ) { + log_syntax(unit, LOG_ERR, filename, line, 0, + "NetDev is not a tunnel, ignoring assignment: %s", rvalue); + return 0; + } + + r = hashmap_put(network->stacked_netdevs, netdev->ifname, netdev); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Cannot add VLAN '%s' to network, ignoring: %m", rvalue); + return 0; + } + + netdev_ref(netdev); + + return 0; +} + +int config_parse_ipv4ll( + 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) { + + AddressFamilyBoolean *link_local = data; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + /* Note that this is mostly like + * config_parse_address_family_boolean(), except that it + * applies only to IPv4 */ + + SET_FLAG(*link_local, ADDRESS_FAMILY_IPV4, parse_boolean(rvalue)); + + return 0; +} + +int config_parse_dhcp( + 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) { + + AddressFamilyBoolean *dhcp = data, s; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + /* Note that this is mostly like + * config_parse_address_family_boolean(), except that it + * understands some old names for the enum values */ + + s = address_family_boolean_from_string(rvalue); + if (s < 0) { + + /* Previously, we had a slightly different enum here, + * support its values for compatbility. */ + + if (streq(rvalue, "none")) + s = ADDRESS_FAMILY_NO; + else if (streq(rvalue, "v4")) + s = ADDRESS_FAMILY_IPV4; + else if (streq(rvalue, "v6")) + s = ADDRESS_FAMILY_IPV6; + else if (streq(rvalue, "both")) + s = ADDRESS_FAMILY_YES; + else { + log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse DHCP option, ignoring: %s", rvalue); + return 0; + } + } + + *dhcp = s; + return 0; +} + +static const char* const dhcp_client_identifier_table[_DHCP_CLIENT_ID_MAX] = { + [DHCP_CLIENT_ID_MAC] = "mac", + [DHCP_CLIENT_ID_DUID] = "duid" +}; + +DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(dhcp_client_identifier, DCHPClientIdentifier); +DEFINE_CONFIG_PARSE_ENUM(config_parse_dhcp_client_identifier, dhcp_client_identifier, DCHPClientIdentifier, "Failed to parse client identifier type"); + +int config_parse_ipv6token( + 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) { + + union in_addr_union buffer; + struct in6_addr *token = data; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(token); + + r = in_addr_from_string(AF_INET6, rvalue, &buffer); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse IPv6 token, ignoring: %s", rvalue); + return 0; + } + + r = in_addr_is_null(AF_INET6, &buffer); + if (r != 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "IPv6 token can not be the ANY address, ignoring: %s", rvalue); + return 0; + } + + if ((buffer.in6.s6_addr32[0] | buffer.in6.s6_addr32[1]) != 0) { + log_syntax(unit, LOG_ERR, filename, line, 0, "IPv6 token can not be longer than 64 bits, ignoring: %s", rvalue); + return 0; + } + + *token = buffer.in6; + + return 0; +} + +static const char* const ipv6_privacy_extensions_table[_IPV6_PRIVACY_EXTENSIONS_MAX] = { + [IPV6_PRIVACY_EXTENSIONS_NO] = "no", + [IPV6_PRIVACY_EXTENSIONS_PREFER_PUBLIC] = "prefer-public", + [IPV6_PRIVACY_EXTENSIONS_YES] = "yes", +}; + +DEFINE_STRING_TABLE_LOOKUP(ipv6_privacy_extensions, IPv6PrivacyExtensions); + +int config_parse_ipv6_privacy_extensions( + 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) { + + IPv6PrivacyExtensions *ipv6_privacy_extensions = data; + int k; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(ipv6_privacy_extensions); + + /* Our enum shall be a superset of booleans, hence first try + * to parse as boolean, and then as enum */ + + k = parse_boolean(rvalue); + if (k > 0) + *ipv6_privacy_extensions = IPV6_PRIVACY_EXTENSIONS_YES; + else if (k == 0) + *ipv6_privacy_extensions = IPV6_PRIVACY_EXTENSIONS_NO; + else { + IPv6PrivacyExtensions s; + + s = ipv6_privacy_extensions_from_string(rvalue); + if (s < 0) { + + if (streq(rvalue, "kernel")) + s = _IPV6_PRIVACY_EXTENSIONS_INVALID; + else { + log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse IPv6 privacy extensions option, ignoring: %s", rvalue); + return 0; + } + } + + *ipv6_privacy_extensions = s; + } + + return 0; +} + +int config_parse_hostname( + 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) { + + char **hostname = data, *hn = NULL; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + + r = config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, rvalue, &hn, userdata); + if (r < 0) + return r; + + if (!hostname_is_valid(hn, false)) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Hostname is not valid, ignoring assignment: %s", rvalue); + free(hn); + return 0; + } + + free(*hostname); + *hostname = hostname_cleanup(hn); + return 0; +} + +int config_parse_timezone( + 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) { + + char **datap = data, *tz = NULL; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + + r = config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, rvalue, &tz, userdata); + if (r < 0) + return r; + + if (!timezone_is_valid(tz)) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Timezone is not valid, ignoring assignment: %s", rvalue); + free(tz); + return 0; + } + + free(*datap); + *datap = tz; + + return 0; +} + +int config_parse_dhcp_server_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; + const char *p = rvalue; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + + for (;;) { + _cleanup_free_ char *w = NULL; + struct in_addr a, *m; + + r = extract_first_word(&p, &w, NULL, 0); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract word, ignoring: %s", rvalue); + return 0; + } + + if (r == 0) + return 0; + + if (inet_pton(AF_INET, w, &a) <= 0) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse DNS server address, ignoring: %s", w); + continue; + } + + m = realloc(n->dhcp_server_dns, (n->n_dhcp_server_dns + 1) * sizeof(struct in_addr)); + if (!m) + return log_oom(); + + m[n->n_dhcp_server_dns++] = a; + n->dhcp_server_dns = m; + } +} + +int config_parse_dhcp_server_ntp( + 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; + const char *p = rvalue; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + + for (;;) { + _cleanup_free_ char *w = NULL; + struct in_addr a, *m; + + r = extract_first_word(&p, &w, NULL, 0); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract word, ignoring: %s", rvalue); + return 0; + } + + if (r == 0) + return 0; + + if (inet_pton(AF_INET, w, &a) <= 0) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse NTP server address, ignoring: %s", w); + continue; + } + + m = realloc(n->dhcp_server_ntp, (n->n_dhcp_server_ntp + 1) * sizeof(struct in_addr)); + if (!m) + return log_oom(); + + m[n->n_dhcp_server_ntp++] = a; + n->dhcp_server_ntp = m; + } +} + +int config_parse_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 = userdata; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + + for (;;) { + _cleanup_free_ char *w = NULL; + union in_addr_union a; + int family; + + r = extract_first_word(&rvalue, &w, WHITESPACE, EXTRACT_QUOTES|EXTRACT_RETAIN_ESCAPE); + if (r == 0) + break; + if (r == -ENOMEM) + return log_oom(); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); + break; + } + + r = in_addr_from_string_auto(w, &family, &a); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse dns server address, ignoring: %s", w); + continue; + } + + r = strv_consume(&n->dns, w); + if (r < 0) + return log_oom(); + + w = NULL; + } + + return 0; +} + +int config_parse_dnssec_negative_trust_anchors( + 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) { + + const char *p = rvalue; + Network *n = data; + int r; + + assert(n); + assert(lvalue); + assert(rvalue); + + if (isempty(rvalue)) { + n->dnssec_negative_trust_anchors = set_free_free(n->dnssec_negative_trust_anchors); + return 0; + } + + for (;;) { + _cleanup_free_ char *w = NULL; + + r = extract_first_word(&p, &w, NULL, 0); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract negative trust anchor domain, ignoring: %s", rvalue); + break; + } + if (r == 0) + break; + + r = dns_name_is_valid(w); + if (r <= 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "%s is not a valid domain name, ignoring.", w); + continue; + } + + r = set_ensure_allocated(&n->dnssec_negative_trust_anchors, &dns_name_hash_ops); + if (r < 0) + return log_oom(); + + r = set_put(n->dnssec_negative_trust_anchors, w); + if (r < 0) + return log_oom(); + if (r > 0) + w = NULL; + } + + return 0; +} + +int config_parse_dhcp_route_table(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) { + uint32_t rt; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + r = safe_atou32(rvalue, &rt); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, + "Unable to read RouteTable, ignoring assignment: %s", rvalue); + return 0; + } + + *((uint32_t *)data) = rt; + + return 0; +} + +DEFINE_CONFIG_PARSE_ENUM(config_parse_dhcp_use_domains, dhcp_use_domains, DHCPUseDomains, "Failed to parse DHCP use domains setting"); + +static const char* const dhcp_use_domains_table[_DHCP_USE_DOMAINS_MAX] = { + [DHCP_USE_DOMAINS_NO] = "no", + [DHCP_USE_DOMAINS_ROUTE] = "route", + [DHCP_USE_DOMAINS_YES] = "yes", +}; + +DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(dhcp_use_domains, DHCPUseDomains, DHCP_USE_DOMAINS_YES); + +DEFINE_CONFIG_PARSE_ENUM(config_parse_lldp_mode, lldp_mode, LLDPMode, "Failed to parse LLDP= setting."); + +static const char* const lldp_mode_table[_LLDP_MODE_MAX] = { + [LLDP_MODE_NO] = "no", + [LLDP_MODE_YES] = "yes", + [LLDP_MODE_ROUTERS_ONLY] = "routers-only", +}; + +DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(lldp_mode, LLDPMode, LLDP_MODE_YES); |