chiark / gitweb /
treewide: correct typos and use consistent "MAC" spelling
[elogind.git] / src / network / networkd-network.c
index 12107c9..3ebd4d7 100644 (file)
 #include <ctype.h>
 #include <net/if.h>
 
-#include "networkd.h"
-#include "network-internal.h"
 #include "path-util.h"
 #include "conf-files.h"
 #include "conf-parser.h"
 #include "util.h"
+#include "networkd.h"
+#include "networkd-netdev.h"
+#include "networkd-link.h"
+#include "network-internal.h"
 
 static int network_load_one(Manager *manager, const char *filename) {
         _cleanup_network_free_ Network *network = NULL;
         _cleanup_fclose_ FILE *file = NULL;
+        char *d;
         Route *route;
         Address *address;
         int r;
@@ -47,8 +50,8 @@ static int network_load_one(Manager *manager, const char *filename) {
                         return -errno;
         }
 
-        if (null_or_empty_path(filename)) {
-                log_debug("skipping empty file: %s", filename);
+        if (null_or_empty_fd(fileno(file))) {
+                log_debug("Skipping empty file: %s", filename);
                 return 0;
         }
 
@@ -60,40 +63,81 @@ static int network_load_one(Manager *manager, const char *filename) {
 
         LIST_HEAD_INIT(network->static_addresses);
         LIST_HEAD_INIT(network->static_routes);
+        LIST_HEAD_INIT(network->static_fdb_entries);
 
-        network->vlans = hashmap_new(string_hash_func, string_compare_func);
-        if (!network->vlans)
-                return log_oom();
-
-        network->macvlans = hashmap_new(uint64_hash_func, uint64_compare_func);
-        if (!network->macvlans)
+        network->stacked_netdevs = hashmap_new(&string_hash_ops);
+        if (!network->stacked_netdevs)
                 return log_oom();
 
-        network->addresses_by_section = hashmap_new(uint64_hash_func, uint64_compare_func);
+        network->addresses_by_section = hashmap_new(NULL);
         if (!network->addresses_by_section)
                 return log_oom();
 
-        network->routes_by_section = hashmap_new(uint64_hash_func, uint64_compare_func);
+        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_ntp = true;
         network->dhcp_dns = true;
         network->dhcp_hostname = true;
-        network->dhcp_domainname = true;
-
-        r = config_parse(NULL, filename, file, "Match\0Network\0Address\0Route\0DHCPv4\0", config_item_perf_lookup,
-                        (void*) network_network_gperf_lookup, false, false, network);
-        if (r < 0) {
-                log_warning("Could not parse config file %s: %s", filename, strerror(-r));
+        network->dhcp_routes = true;
+        network->dhcp_sendhost = true;
+        network->dhcp_route_metric = DHCP_ROUTE_METRIC;
+
+        network->llmnr = LLMNR_SUPPORT_YES;
+
+        network->link_local = ADDRESS_FAMILY_IPV6;
+
+        r = config_parse(NULL, filename, file,
+                         "Match\0"
+                         "Link\0"
+                         "Network\0"
+                         "Address\0"
+                         "Route\0"
+                         "DHCP\0"
+                         "DHCPv4\0"
+                         "Bridge\0"
+                         "BridgeFDB\0",
+                         config_item_perf_lookup, network_network_gperf_lookup,
+                         false, false, true, 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. "
@@ -127,10 +171,8 @@ int network_load(Manager *manager) {
                 network_free(network);
 
         r = conf_files_list_strv(&files, ".network", NULL, network_dirs);
-        if (r < 0) {
-                log_error("Failed to enumerate network files: %s", strerror(-r));
-                return r;
-        }
+        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);
@@ -145,6 +187,7 @@ void network_free(Network *network) {
         NetDev *netdev;
         Route *route;
         Address *address;
+        FdbEntry *fdb_entry;
         Iterator i;
 
         if (!network)
@@ -159,23 +202,23 @@ void network_free(Network *network) {
         free(network->match_name);
 
         free(network->description);
+        free(network->dhcp_vendor_class_identifier);
 
-        while ((address = network->dns)) {
-                LIST_REMOVE(addresses, network->dns, address);
-                address_free(address);
-        }
+        free(network->mac);
+
+        strv_free(network->ntp);
+        strv_free(network->dns);
+        strv_free(network->domains);
 
         netdev_unref(network->bridge);
 
         netdev_unref(network->bond);
 
-        HASHMAP_FOREACH(netdev, network->vlans, i)
-                netdev_unref(netdev);
-        hashmap_free(network->vlans);
-
-        HASHMAP_FOREACH(netdev, network->macvlans, i)
+        HASHMAP_FOREACH(netdev, network->stacked_netdevs, i) {
+                hashmap_remove(network->stacked_netdevs, netdev->ifname);
                 netdev_unref(netdev);
-        hashmap_free(network->macvlans);
+        }
+        hashmap_free(network->stacked_netdevs);
 
         while ((route = network->static_routes))
                 route_free(route);
@@ -183,11 +226,22 @@ void network_free(Network *network) {
         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);
+        }
 
-        if (network->manager && network->manager->networks)
-                LIST_REMOVE(networks, network->manager->networks, network);
+        free(network->name);
 
         condition_free_list(network->match_host);
         condition_free_list(network->match_virt);
@@ -197,6 +251,22 @@ void network_free(Network *network) {
         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) {
@@ -217,8 +287,22 @@ int network_get(Manager *manager, struct udev_device *device,
                                      udev_device_get_property_value(device, "ID_NET_DRIVER"),
                                      udev_device_get_devtype(device),
                                      ifname)) {
-                        log_debug("%*s: found matching network '%s'", IFNAMSIZ, ifname,
-                                  network->filename);
+                        if (network->match_name) {
+                                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",
+                                                    IFNAMSIZ, ifname, network->filename);
+                                else
+                                        log_debug("%-*s: found matching network '%s'", IFNAMSIZ, ifname, network->filename);
+                        } else
+                                log_debug("%-*s: found matching network '%s'", IFNAMSIZ, ifname, network->filename);
+
                         *ret = network;
                         return 0;
                 }
@@ -234,8 +318,28 @@ int network_apply(Manager *manager, Network *network, Link *link) {
 
         link->network = network;
 
-        if (network->dns) {
-                r = manager_update_resolv_conf(manager);
+        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_addr.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->metrics = IPV4LL_ROUTE_METRIC;
+                route->protocol = RTPROT_STATIC;
+        }
+
+        if (network->dns || network->ntp) {
+                r = link_save(link);
                 if (r < 0)
                         return r;
         }
@@ -303,19 +407,14 @@ int config_parse_netdev(const char *unit,
 
                 break;
         case NETDEV_KIND_VLAN:
-                r = hashmap_put(network->vlans, &netdev->vlanid, netdev);
-                if (r < 0) {
-                        log_syntax(unit, LOG_ERR, filename, line, EINVAL,
-                                   "Can not add VLAN to network: %s", rvalue);
-                        return 0;
-                }
-
-                break;
         case NETDEV_KIND_MACVLAN:
-                r = hashmap_put(network->macvlans, netdev->ifname, netdev);
+        case NETDEV_KIND_IPVLAN:
+        case NETDEV_KIND_VXLAN:
+                r = hashmap_put(network->stacked_netdevs, netdev->ifname, netdev);
                 if (r < 0) {
                         log_syntax(unit, LOG_ERR, filename, line, EINVAL,
-                                   "Can not add MACVLAN to network: %s", rvalue);
+                                   "Can not add VLAN '%s' to network: %s",
+                                   rvalue, strerror(-r));
                         return 0;
                 }
 
@@ -329,6 +428,47 @@ int config_parse_netdev(const char *unit,
         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) {
+        Network *network = userdata;
+        char ***domains = data;
+        char **domain;
+        int r;
+
+        r = config_parse_strv(unit, filename, line, section, section_line,
+                              lvalue, ltype, rvalue, domains, userdata);
+        if (r < 0)
+                return r;
+
+        strv_uniq(*domains);
+        network->wildcard_domain = !!strv_find(*domains, "*");
+
+        STRV_FOREACH(domain, *domains) {
+                if (is_localhost(*domain))
+                        log_syntax(unit, LOG_ERR, filename, line, EINVAL, "'localhost' domain names may not be configured, ignoring assignment: %s", *domain);
+                else if (!hostname_is_valid(*domain)) {
+                        if (!streq(*domain, "*"))
+                                log_syntax(unit, LOG_ERR, filename, line, EINVAL, "domain name is not valid, ignoring assignment: %s", *domain);
+                } else
+                        continue;
+
+                strv_remove(*domains, *domain);
+
+                /* We removed one entry, make sure we don't skip the next one */
+                domain--;
+        }
+
+        return 0;
+}
+
 int config_parse_tunnel(const char *unit,
                         const char *filename,
                         unsigned line,
@@ -357,13 +497,199 @@ int config_parse_tunnel(const char *unit,
 
         if (netdev->kind != NETDEV_KIND_IPIP &&
             netdev->kind != NETDEV_KIND_SIT &&
-            netdev->kind != NETDEV_KIND_GRE) {
+            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_IP6TNL
+            ) {
                 log_syntax(unit, LOG_ERR, filename, line, EINVAL,
                            "NetDev is not a tunnel, ignoring assignment: %s", rvalue);
                 return 0;
         }
 
-        network->tunnel = netdev;
+        r = hashmap_put(network->stacked_netdevs, netdev->ifname, netdev);
+        if (r < 0) {
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+                           "Can not add VLAN '%s' to network: %s",
+                           rvalue, strerror(-r));
+                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 */
+
+        if (parse_boolean(rvalue))
+                *link_local |= ADDRESS_FAMILY_IPV4;
+        else
+                *link_local &= ~ADDRESS_FAMILY_IPV4;
+
+        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, s, "Failed to parse DHCP option, ignoring: %s", rvalue);
+                        return 0;
+                }
+        }
+
+        *dhcp = s;
+        return 0;
+}
+
+static const char* const llmnr_support_table[_LLMNR_SUPPORT_MAX] = {
+        [LLMNR_SUPPORT_NO] = "no",
+        [LLMNR_SUPPORT_YES] = "yes",
+        [LLMNR_SUPPORT_RESOLVE] = "resolve",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(llmnr_support, LLMNRSupport);
+
+int config_parse_llmnr(
+                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) {
+
+        LLMNRSupport *llmnr = data;
+        int k;
+
+        assert(filename);
+        assert(lvalue);
+        assert(rvalue);
+        assert(llmnr);
+
+        /* 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)
+                *llmnr = LLMNR_SUPPORT_YES;
+        else if (k == 0)
+                *llmnr = LLMNR_SUPPORT_NO;
+        else {
+                LLMNRSupport s;
+
+                s = llmnr_support_from_string(rvalue);
+                if (s < 0){
+                        log_syntax(unit, LOG_ERR, filename, line, -s, "Failed to parse LLMNR option, ignoring: %s", rvalue);
+                        return 0;
+                }
+
+                *llmnr = s;
+        }
+
+        return 0;
+}
+
+int config_parse_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) {
+
+        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, EINVAL, "IPv6 token can not be longer than 64 bits, ignoring: %s", rvalue);
+                return 0;
+        }
+
+        *token = buffer.in6;
 
         return 0;
 }