diff options
Diffstat (limited to 'src/network/networkd-json.c')
| -rw-r--r-- | src/network/networkd-json.c | 1422 |
1 files changed, 1422 insertions, 0 deletions
diff --git a/src/network/networkd-json.c b/src/network/networkd-json.c new file mode 100644 index 0000000..cbbb1e6 --- /dev/null +++ b/src/network/networkd-json.c @@ -0,0 +1,1422 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <linux/nexthop.h> + +#include "dns-domain.h" +#include "ip-protocol-list.h" +#include "netif-util.h" +#include "networkd-address.h" +#include "networkd-json.h" +#include "networkd-link.h" +#include "networkd-manager.h" +#include "networkd-neighbor.h" +#include "networkd-nexthop.h" +#include "networkd-network.h" +#include "networkd-route-util.h" +#include "networkd-route.h" +#include "networkd-routing-policy-rule.h" +#include "sort-util.h" +#include "user-util.h" +#include "wifi-util.h" + +static int address_build_json(Address *address, JsonVariant **ret) { + _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; + _cleanup_free_ char *scope = NULL, *flags = NULL, *state = NULL; + int r; + + assert(address); + assert(ret); + + r = route_scope_to_string_alloc(address->scope, &scope); + if (r < 0) + return r; + + r = address_flags_to_string_alloc(address->flags, address->family, &flags); + if (r < 0) + return r; + + r = network_config_state_to_string_alloc(address->state, &state); + if (r < 0) + return r; + + r = json_build(&v, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_INTEGER("Family", address->family), + JSON_BUILD_PAIR_IN_ADDR("Address", &address->in_addr, address->family), + JSON_BUILD_PAIR_IN_ADDR_NON_NULL("Peer", &address->in_addr_peer, address->family), + JSON_BUILD_PAIR_IN4_ADDR_NON_NULL("Broadcast", &address->broadcast), + JSON_BUILD_PAIR_UNSIGNED("PrefixLength", address->prefixlen), + JSON_BUILD_PAIR_UNSIGNED("Scope", address->scope), + JSON_BUILD_PAIR_STRING("ScopeString", scope), + JSON_BUILD_PAIR_UNSIGNED("Flags", address->flags), + JSON_BUILD_PAIR_STRING("FlagsString", flags), + JSON_BUILD_PAIR_STRING_NON_EMPTY("Label", address->label), + JSON_BUILD_PAIR_FINITE_USEC("PreferredLifetimeUsec", address->lifetime_preferred_usec), + JSON_BUILD_PAIR_FINITE_USEC("ValidLifetimeUsec", address->lifetime_valid_usec), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(address->source)), + JSON_BUILD_PAIR_STRING("ConfigState", state), + JSON_BUILD_PAIR_IN_ADDR_NON_NULL("ConfigProvider", &address->provider, address->family))); + if (r < 0) + return r; + + *ret = TAKE_PTR(v); + return 0; +} + +static int addresses_build_json(Set *addresses, JsonVariant **ret) { + JsonVariant **elements; + Address *address; + size_t n = 0; + int r; + + assert(ret); + + if (set_isempty(addresses)) { + *ret = NULL; + return 0; + } + + elements = new(JsonVariant*, set_size(addresses)); + if (!elements) + return -ENOMEM; + + SET_FOREACH(address, addresses) { + r = address_build_json(address, elements + n); + if (r < 0) + goto finalize; + n++; + } + + r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("Addresses", JSON_BUILD_VARIANT_ARRAY(elements, n)))); + +finalize: + json_variant_unref_many(elements, n); + free(elements); + return r; +} + +static int neighbor_build_json(Neighbor *n, JsonVariant **ret) { + _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; + _cleanup_free_ char *state = NULL; + int r; + + assert(n); + assert(ret); + + r = network_config_state_to_string_alloc(n->state, &state); + if (r < 0) + return r; + + r = json_build(&v, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_INTEGER("Family", n->family), + JSON_BUILD_PAIR_IN_ADDR("Destination", &n->in_addr, n->family), + JSON_BUILD_PAIR_HW_ADDR("LinkLayerAddress", &n->ll_addr), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(n->source)), + JSON_BUILD_PAIR_STRING("ConfigState", state))); + if (r < 0) + return r; + + *ret = TAKE_PTR(v); + return 0; +} + +static int neighbors_build_json(Set *neighbors, JsonVariant **ret) { + JsonVariant **elements; + Neighbor *neighbor; + size_t n = 0; + int r; + + assert(ret); + + if (set_isempty(neighbors)) { + *ret = NULL; + return 0; + } + + elements = new(JsonVariant*, set_size(neighbors)); + if (!elements) + return -ENOMEM; + + SET_FOREACH(neighbor, neighbors) { + r = neighbor_build_json(neighbor, elements + n); + if (r < 0) + goto finalize; + n++; + } + + r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("Neighbors", JSON_BUILD_VARIANT_ARRAY(elements, n)))); + +finalize: + json_variant_unref_many(elements, n); + free(elements); + return r; +} + +static int nexthop_group_build_json(NextHop *nexthop, JsonVariant **ret) { + JsonVariant **elements; + struct nexthop_grp *g; + size_t n = 0; + int r; + + assert(nexthop); + assert(ret); + + if (hashmap_isempty(nexthop->group)) { + *ret = NULL; + return 0; + } + + elements = new(JsonVariant*, hashmap_size(nexthop->group)); + if (!elements) + return -ENOMEM; + + HASHMAP_FOREACH(g, nexthop->group) { + r = json_build(elements + n, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_UNSIGNED("ID", g->id), + JSON_BUILD_PAIR_UNSIGNED("Weight", g->weight+1))); + if (r < 0) + goto failure; + + n++; + } + + r = json_variant_new_array(ret, elements, n); + +failure: + json_variant_unref_many(elements, n); + free(elements); + return r; +} + +static int nexthop_build_json(NextHop *n, JsonVariant **ret) { + _cleanup_(json_variant_unrefp) JsonVariant *v = NULL, *group = NULL; + _cleanup_free_ char *flags = NULL, *protocol = NULL, *state = NULL; + int r; + + assert(n); + assert(ret); + + r = route_flags_to_string_alloc(n->flags, &flags); + if (r < 0) + return r; + + r = route_protocol_to_string_alloc(n->protocol, &protocol); + if (r < 0) + return r; + + r = network_config_state_to_string_alloc(n->state, &state); + if (r < 0) + return r; + + r = nexthop_group_build_json(n, &group); + if (r < 0) + return r; + + r = json_build(&v, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_UNSIGNED("ID", n->id), + JSON_BUILD_PAIR_IN_ADDR_NON_NULL("Gateway", &n->gw, n->family), + JSON_BUILD_PAIR_UNSIGNED("Flags", n->flags), + JSON_BUILD_PAIR_STRING("FlagsString", strempty(flags)), + JSON_BUILD_PAIR_UNSIGNED("Protocol", n->protocol), + JSON_BUILD_PAIR_STRING("ProtocolString", protocol), + JSON_BUILD_PAIR_BOOLEAN("Blackhole", n->blackhole), + JSON_BUILD_PAIR_VARIANT_NON_NULL("Group", group), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(n->source)), + JSON_BUILD_PAIR_STRING("ConfigState", state))); + if (r < 0) + return r; + + *ret = TAKE_PTR(v); + return 0; +} + +static int nexthops_build_json(Set *nexthops, JsonVariant **ret) { + JsonVariant **elements; + NextHop *nexthop; + size_t n = 0; + int r; + + assert(ret); + + if (set_isempty(nexthops)) { + *ret = NULL; + return 0; + } + + elements = new(JsonVariant*, set_size(nexthops)); + if (!elements) + return -ENOMEM; + + SET_FOREACH(nexthop, nexthops) { + r = nexthop_build_json(nexthop, elements + n); + if (r < 0) + goto finalize; + n++; + } + + r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("NextHops", JSON_BUILD_VARIANT_ARRAY(elements, n)))); + +finalize: + json_variant_unref_many(elements, n); + free(elements); + return r; +} + +static int route_build_json(Route *route, JsonVariant **ret) { + _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; + _cleanup_free_ char *scope = NULL, *protocol = NULL, *table = NULL, *flags = NULL, *state = NULL; + Manager *manager; + int r; + + assert(route); + assert(ret); + + manager = route->link ? route->link->manager : route->manager; + + assert(manager); + + r = route_scope_to_string_alloc(route->scope, &scope); + if (r < 0) + return r; + + r = route_protocol_to_string_alloc(route->protocol, &protocol); + if (r < 0) + return r; + + r = manager_get_route_table_to_string(manager, route->table, &table); + if (r < 0) + return r; + + r = route_flags_to_string_alloc(route->flags, &flags); + if (r < 0) + return r; + + r = network_config_state_to_string_alloc(route->state, &state); + if (r < 0) + return r; + + r = json_build(&v, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_INTEGER("Family", route->family), + JSON_BUILD_PAIR_IN_ADDR("Destination", &route->dst, route->family), + JSON_BUILD_PAIR_UNSIGNED("DestinationPrefixLength", route->dst_prefixlen), + JSON_BUILD_PAIR_IN_ADDR_NON_NULL("Gateway", &route->gw, route->gw_family), + JSON_BUILD_PAIR_CONDITION(route->src_prefixlen > 0, + "Source", JSON_BUILD_IN_ADDR(&route->src, route->family)), + JSON_BUILD_PAIR_UNSIGNED_NON_ZERO("SourcePrefixLength", route->src_prefixlen), + JSON_BUILD_PAIR_IN_ADDR_NON_NULL("PreferredSource", &route->prefsrc, route->family), + JSON_BUILD_PAIR_UNSIGNED("Scope", route->scope), + JSON_BUILD_PAIR_STRING("ScopeString", scope), + JSON_BUILD_PAIR_UNSIGNED("Protocol", route->protocol), + JSON_BUILD_PAIR_STRING("ProtocolString", protocol), + JSON_BUILD_PAIR_UNSIGNED("Type", route->type), + JSON_BUILD_PAIR_STRING("TypeString", route_type_to_string(route->type)), + JSON_BUILD_PAIR_UNSIGNED("Priority", route->priority), + JSON_BUILD_PAIR_UNSIGNED("Table", route->table), + JSON_BUILD_PAIR_STRING("TableString", table), + JSON_BUILD_PAIR_UNSIGNED_NON_ZERO("MTU", route->mtu), + JSON_BUILD_PAIR_UNSIGNED("Preference", route->pref), + JSON_BUILD_PAIR_UNSIGNED("Flags", route->flags), + JSON_BUILD_PAIR_STRING("FlagsString", strempty(flags)), + JSON_BUILD_PAIR_FINITE_USEC("LifetimeUSec", route->lifetime_usec), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(route->source)), + JSON_BUILD_PAIR_STRING("ConfigState", state), + JSON_BUILD_PAIR_IN_ADDR_NON_NULL("ConfigProvider", &route->provider, route->family))); + if (r < 0) + return r; + + *ret = TAKE_PTR(v); + return 0; +} + +static int routes_build_json(Set *routes, JsonVariant **ret) { + JsonVariant **elements; + Route *route; + size_t n = 0; + int r; + + assert(ret); + + if (set_isempty(routes)) { + *ret = NULL; + return 0; + } + + elements = new(JsonVariant*, set_size(routes)); + if (!elements) + return -ENOMEM; + + SET_FOREACH(route, routes) { + r = route_build_json(route, elements + n); + if (r < 0) + goto finalize; + n++; + } + + r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("Routes", JSON_BUILD_VARIANT_ARRAY(elements, n)))); + +finalize: + json_variant_unref_many(elements, n); + free(elements); + return r; +} + +static int routing_policy_rule_build_json(RoutingPolicyRule *rule, JsonVariant **ret) { + _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; + _cleanup_free_ char *table = NULL, *protocol = NULL, *state = NULL; + int r; + + assert(rule); + assert(rule->manager); + assert(ret); + + r = manager_get_route_table_to_string(rule->manager, rule->table, &table); + if (r < 0 && r != -EINVAL) + return r; + + r = route_protocol_to_string_alloc(rule->protocol, &protocol); + if (r < 0) + return r; + + r = network_config_state_to_string_alloc(rule->state, &state); + if (r < 0) + return r; + + r = json_build(&v, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_INTEGER("Family", rule->family), + JSON_BUILD_PAIR_IN_ADDR_NON_NULL("FromPrefix", &rule->from, rule->family), + JSON_BUILD_PAIR_CONDITION(in_addr_is_set(rule->family, &rule->from), + "FromPrefixLength", JSON_BUILD_UNSIGNED(rule->from_prefixlen)), + JSON_BUILD_PAIR_IN_ADDR_NON_NULL("ToPrefix", &rule->to, rule->family), + JSON_BUILD_PAIR_CONDITION(in_addr_is_set(rule->family, &rule->to), + "ToPrefixLength", JSON_BUILD_UNSIGNED(rule->to_prefixlen)), + JSON_BUILD_PAIR_UNSIGNED("Protocol", rule->protocol), + JSON_BUILD_PAIR_STRING("ProtocolString", protocol), + JSON_BUILD_PAIR_UNSIGNED("TOS", rule->tos), + JSON_BUILD_PAIR_UNSIGNED("Type", rule->type), + JSON_BUILD_PAIR_STRING("TypeString", fr_act_type_full_to_string(rule->type)), + JSON_BUILD_PAIR_UNSIGNED("IPProtocol", rule->ipproto), + JSON_BUILD_PAIR_STRING("IPProtocolString", ip_protocol_to_name(rule->ipproto)), + JSON_BUILD_PAIR_UNSIGNED("Priority", rule->priority), + JSON_BUILD_PAIR_UNSIGNED("FirewallMark", rule->fwmark), + JSON_BUILD_PAIR_UNSIGNED("FirewallMask", rule->fwmask), + JSON_BUILD_PAIR_UNSIGNED_NON_ZERO("Table", rule->table), + JSON_BUILD_PAIR_STRING_NON_EMPTY("TableString", table), + JSON_BUILD_PAIR_BOOLEAN("Invert", rule->invert_rule), + JSON_BUILD_PAIR_CONDITION(rule->suppress_prefixlen >= 0, + "SuppressPrefixLength", JSON_BUILD_UNSIGNED(rule->suppress_prefixlen)), + JSON_BUILD_PAIR_CONDITION(rule->suppress_ifgroup >= 0, + "SuppressInterfaceGroup", JSON_BUILD_UNSIGNED(rule->suppress_ifgroup)), + JSON_BUILD_PAIR_CONDITION(rule->sport.start != 0 || rule->sport.end != 0, "SourcePort", + JSON_BUILD_ARRAY(JSON_BUILD_UNSIGNED(rule->sport.start), JSON_BUILD_UNSIGNED(rule->sport.end))), + JSON_BUILD_PAIR_CONDITION(rule->dport.start != 0 || rule->dport.end != 0, "DestinationPort", + JSON_BUILD_ARRAY(JSON_BUILD_UNSIGNED(rule->dport.start), JSON_BUILD_UNSIGNED(rule->dport.end))), + JSON_BUILD_PAIR_CONDITION(rule->uid_range.start != UID_INVALID && rule->uid_range.end != UID_INVALID, "User", + JSON_BUILD_ARRAY(JSON_BUILD_UNSIGNED(rule->uid_range.start), JSON_BUILD_UNSIGNED(rule->uid_range.end))), + JSON_BUILD_PAIR_STRING_NON_EMPTY("IncomingInterface", rule->iif), + JSON_BUILD_PAIR_STRING_NON_EMPTY("OutgoingInterface", rule->oif), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(rule->source)), + JSON_BUILD_PAIR_STRING("ConfigState", state))); + if (r < 0) + return r; + + *ret = TAKE_PTR(v); + return 0; +} + +static int routing_policy_rules_build_json(Set *rules, JsonVariant **ret) { + JsonVariant **elements; + RoutingPolicyRule *rule; + size_t n = 0; + int r; + + assert(ret); + + if (set_isempty(rules)) { + *ret = NULL; + return 0; + } + + elements = new(JsonVariant*, set_size(rules)); + if (!elements) + return -ENOMEM; + + SET_FOREACH(rule, rules) { + r = routing_policy_rule_build_json(rule, elements + n); + if (r < 0) + goto finalize; + n++; + } + + r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("RoutingPolicyRules", JSON_BUILD_VARIANT_ARRAY(elements, n)))); + +finalize: + json_variant_unref_many(elements, n); + free(elements); + return r; +} + +static int network_build_json(Network *network, JsonVariant **ret) { + assert(ret); + + if (!network) { + *ret = NULL; + return 0; + } + + return json_build(ret, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_STRING("NetworkFile", network->filename), + JSON_BUILD_PAIR_BOOLEAN("RequiredForOnline", network->required_for_online), + JSON_BUILD_PAIR("RequiredOperationalStateForOnline", + JSON_BUILD_ARRAY(JSON_BUILD_STRING(link_operstate_to_string(network->required_operstate_for_online.min)), + JSON_BUILD_STRING(link_operstate_to_string(network->required_operstate_for_online.max)))), + JSON_BUILD_PAIR_STRING("RequiredFamilyForOnline", + link_required_address_family_to_string(network->required_family_for_online)), + JSON_BUILD_PAIR_STRING("ActivationPolicy", + activation_policy_to_string(network->activation_policy)))); +} + +static int device_build_json(sd_device *device, JsonVariant **ret) { + const char *link = NULL, *path = NULL, *vendor = NULL, *model = NULL; + + assert(ret); + + if (!device) { + *ret = NULL; + return 0; + } + + (void) sd_device_get_property_value(device, "ID_NET_LINK_FILE", &link); + (void) sd_device_get_property_value(device, "ID_PATH", &path); + + if (sd_device_get_property_value(device, "ID_VENDOR_FROM_DATABASE", &vendor) < 0) + (void) sd_device_get_property_value(device, "ID_VENDOR", &vendor); + + if (sd_device_get_property_value(device, "ID_MODEL_FROM_DATABASE", &model) < 0) + (void) sd_device_get_property_value(device, "ID_MODEL", &model); + + return json_build(ret, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_STRING_NON_EMPTY("LinkFile", link), + JSON_BUILD_PAIR_STRING_NON_EMPTY("Path", path), + JSON_BUILD_PAIR_STRING_NON_EMPTY("Vendor", vendor), + JSON_BUILD_PAIR_STRING_NON_EMPTY("Model", model))); +} + +static int dns_build_json_one(Link *link, const struct in_addr_full *a, NetworkConfigSource s, const union in_addr_union *p, JsonVariant **ret) { + _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; + int r; + + assert(link); + assert(a); + assert(ret); + + if (a->ifindex != 0 && a->ifindex != link->ifindex) { + *ret = NULL; + return 0; + } + + r = json_build(&v, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_INTEGER("Family", a->family), + JSON_BUILD_PAIR_IN_ADDR("Address", &a->address, a->family), + JSON_BUILD_PAIR_UNSIGNED_NON_ZERO("Port", a->port), + JSON_BUILD_PAIR_CONDITION(a->ifindex != 0, "InterfaceIndex", JSON_BUILD_INTEGER(a->ifindex)), + JSON_BUILD_PAIR_STRING_NON_EMPTY("ServerName", a->server_name), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(s)), + JSON_BUILD_PAIR_IN_ADDR_NON_NULL("ConfigProvider", p, a->family))); + if (r < 0) + return r; + + *ret = TAKE_PTR(v); + return 1; +} + +static int dns_build_json(Link *link, JsonVariant **ret) { + JsonVariant **elements = NULL; + size_t n = 0; + int r; + + assert(link); + assert(ret); + + if (!link->network) { + *ret = NULL; + return 0; + } + + if (link->n_dns != UINT_MAX) { + for (unsigned i = 0; i < link->n_dns; i++) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = dns_build_json_one(link, link->dns[i], NETWORK_CONFIG_SOURCE_RUNTIME, NULL, elements + n); + if (r < 0) + goto finalize; + if (r > 0) + n++; + } + } else { + for (unsigned i = 0; i < link->network->n_dns; i++) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = dns_build_json_one(link, link->network->dns[i], NETWORK_CONFIG_SOURCE_STATIC, NULL, elements + n); + if (r < 0) + goto finalize; + if (r > 0) + n++; + } + + if (link->dhcp_lease && link->network->dhcp_use_dns) { + const struct in_addr *dns; + union in_addr_union s; + int n_dns; + + r = sd_dhcp_lease_get_server_identifier(link->dhcp_lease, &s.in); + if (r < 0) + goto finalize; + + n_dns = sd_dhcp_lease_get_dns(link->dhcp_lease, &dns); + for (int i = 0; i < n_dns; i++) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = dns_build_json_one(link, + &(struct in_addr_full) { .family = AF_INET, .address.in = dns[i], }, + NETWORK_CONFIG_SOURCE_DHCP4, + &s, + elements + n); + if (r < 0) + goto finalize; + if (r > 0) + n++; + } + } + + if (link->dhcp6_lease && link->network->dhcp6_use_dns) { + const struct in6_addr *dns; + union in_addr_union s; + int n_dns; + + r = sd_dhcp6_lease_get_server_address(link->dhcp6_lease, &s.in6); + if (r < 0) + goto finalize; + + n_dns = sd_dhcp6_lease_get_dns(link->dhcp6_lease, &dns); + for (int i = 0; i < n_dns; i++) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = dns_build_json_one(link, + &(struct in_addr_full) { .family = AF_INET6, .address.in6 = dns[i], }, + NETWORK_CONFIG_SOURCE_DHCP6, + &s, + elements + n); + if (r < 0) + goto finalize; + if (r > 0) + n++; + } + } + + if (link->network->ipv6_accept_ra_use_dns) { + NDiscRDNSS *a; + + SET_FOREACH(a, link->ndisc_rdnss) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = dns_build_json_one(link, + &(struct in_addr_full) { .family = AF_INET6, .address.in6 = a->address, }, + NETWORK_CONFIG_SOURCE_NDISC, + &(union in_addr_union) { .in6 = a->router }, + elements + n); + if (r < 0) + goto finalize; + if (r > 0) + n++; + } + } + } + + if (n == 0) { + *ret = NULL; + r = 0; + goto finalize; + } + + r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("DNS", JSON_BUILD_VARIANT_ARRAY(elements, n)))); + +finalize: + json_variant_unref_many(elements, n); + free(elements); + return r; +} + +static int server_build_json_one_addr(int family, const union in_addr_union *a, NetworkConfigSource s, const union in_addr_union *p, JsonVariant **ret) { + assert(IN_SET(family, AF_INET, AF_INET6)); + assert(a); + assert(ret); + + return json_build(ret, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_INTEGER("Family", family), + JSON_BUILD_PAIR_IN_ADDR("Address", a, family), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(s)), + JSON_BUILD_PAIR_IN_ADDR_NON_NULL("ConfigProvider", p, family))); +} + +static int server_build_json_one_fqdn(int family, const char *fqdn, NetworkConfigSource s, const union in_addr_union *p, JsonVariant **ret) { + assert(IN_SET(family, AF_UNSPEC, AF_INET, AF_INET6)); + assert(fqdn); + assert(ret); + + return json_build(ret, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_STRING("Server", fqdn), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(s)), + JSON_BUILD_PAIR_IN_ADDR_NON_NULL("ConfigProvider", p, family))); +} + +static int server_build_json_one_string(const char *str, NetworkConfigSource s, JsonVariant **ret) { + union in_addr_union a; + int family; + + assert(str); + assert(ret); + + if (in_addr_from_string_auto(str, &family, &a) >= 0) + return server_build_json_one_addr(family, &a, s, NULL, ret); + + return server_build_json_one_fqdn(AF_UNSPEC, str, s, NULL, ret); +} + +static int ntp_build_json(Link *link, JsonVariant **ret) { + JsonVariant **elements = NULL; + size_t n = 0; + int r; + + assert(link); + assert(ret); + + if (!link->network) { + *ret = NULL; + return 0; + } + + STRV_FOREACH(p, link->ntp ?: link->network->ntp) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = server_build_json_one_string(*p, NETWORK_CONFIG_SOURCE_RUNTIME, elements + n); + if (r < 0) + goto finalize; + + n++; + } + + if (!link->ntp) { + if (link->dhcp_lease && link->network->dhcp_use_ntp) { + const struct in_addr *ntp; + union in_addr_union s; + int n_ntp; + + r = sd_dhcp_lease_get_server_identifier(link->dhcp_lease, &s.in); + if (r < 0) + goto finalize; + + n_ntp = sd_dhcp_lease_get_ntp(link->dhcp_lease, &ntp); + for (int i = 0; i < n_ntp; i++) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = server_build_json_one_addr(AF_INET, + &(union in_addr_union) { .in = ntp[i], }, + NETWORK_CONFIG_SOURCE_DHCP4, + &s, + elements + n); + if (r < 0) + goto finalize; + + n++; + } + } + + if (link->dhcp6_lease && link->network->dhcp6_use_ntp) { + const struct in6_addr *ntp_addr; + union in_addr_union s; + char **ntp_fqdn; + int n_ntp; + + r = sd_dhcp6_lease_get_server_address(link->dhcp6_lease, &s.in6); + if (r < 0) + goto finalize; + + n_ntp = sd_dhcp6_lease_get_ntp_addrs(link->dhcp6_lease, &ntp_addr); + for (int i = 0; i < n_ntp; i++) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = server_build_json_one_addr(AF_INET6, + &(union in_addr_union) { .in6 = ntp_addr[i], }, + NETWORK_CONFIG_SOURCE_DHCP6, + &s, + elements + n); + if (r < 0) + goto finalize; + + n++; + } + + n_ntp = sd_dhcp6_lease_get_ntp_fqdn(link->dhcp6_lease, &ntp_fqdn); + for (int i = 0; i < n_ntp; i++) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = server_build_json_one_fqdn(AF_INET6, + ntp_fqdn[i], + NETWORK_CONFIG_SOURCE_DHCP6, + &s, + elements + n); + if (r < 0) + goto finalize; + + n++; + } + } + } + + if (n == 0) { + *ret = NULL; + return 0; + } + + r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("NTP", JSON_BUILD_VARIANT_ARRAY(elements, n)))); + +finalize: + json_variant_unref_many(elements, n); + free(elements); + return r; +} + +static int sip_build_json(Link *link, JsonVariant **ret) { + const struct in_addr *sip; + JsonVariant **elements; + union in_addr_union s; + size_t n = 0; + int n_sip, r; + + assert(link); + assert(ret); + + if (!link->network || !link->network->dhcp_use_sip || !link->dhcp_lease) { + *ret = NULL; + return 0; + } + + n_sip = sd_dhcp_lease_get_sip(link->dhcp_lease, &sip); + if (n_sip <= 0) { + *ret = NULL; + return 0; + } + + r = sd_dhcp_lease_get_server_identifier(link->dhcp_lease, &s.in); + if (r < 0) + return r; + + elements = new(JsonVariant*, n_sip); + if (!elements) + return -ENOMEM; + + for (int i = 0; i < n_sip; i++) { + r = server_build_json_one_addr(AF_INET, + &(union in_addr_union) { .in = sip[i], }, + NETWORK_CONFIG_SOURCE_DHCP4, + &s, + elements + n); + if (r < 0) + goto finalize; + n++; + } + + r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("SIP", JSON_BUILD_VARIANT_ARRAY(elements, n)))); + +finalize: + json_variant_unref_many(elements, n); + free(elements); + return r; +} + +static int domain_build_json(int family, const char *domain, NetworkConfigSource s, const union in_addr_union *p, JsonVariant **ret) { + assert(IN_SET(family, AF_UNSPEC, AF_INET, AF_INET6)); + assert(domain); + assert(ret); + + return json_build(ret, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_STRING("Domain", domain), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(s)), + JSON_BUILD_PAIR_IN_ADDR_NON_NULL("ConfigProvider", p, family))); +} + +static int domains_build_json(Link *link, bool is_route, JsonVariant **ret) { + OrderedSet *link_domains, *network_domains; + JsonVariant **elements = NULL; + DHCPUseDomains use_domains; + union in_addr_union s; + char **domains; + const char *domain; + size_t n = 0; + int r; + + assert(link); + assert(ret); + + if (!link->network) { + *ret = NULL; + return 0; + } + + link_domains = is_route ? link->route_domains : link->search_domains; + network_domains = is_route ? link->network->route_domains : link->network->search_domains; + use_domains = is_route ? DHCP_USE_DOMAINS_ROUTE : DHCP_USE_DOMAINS_YES; + + ORDERED_SET_FOREACH(domain, link_domains ?: network_domains) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = domain_build_json(AF_UNSPEC, domain, + link_domains ? NETWORK_CONFIG_SOURCE_RUNTIME : NETWORK_CONFIG_SOURCE_STATIC, + NULL, elements + n); + if (r < 0) + goto finalize; + + n++; + } + + if (!link_domains) { + if (link->dhcp_lease && + link->network->dhcp_use_domains == use_domains) { + r = sd_dhcp_lease_get_server_identifier(link->dhcp_lease, &s.in); + if (r < 0) + goto finalize; + + if (sd_dhcp_lease_get_domainname(link->dhcp_lease, &domain) >= 0) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = domain_build_json(AF_INET, domain, NETWORK_CONFIG_SOURCE_DHCP4, &s, elements + n); + if (r < 0) + goto finalize; + + n++; + } + + if (sd_dhcp_lease_get_search_domains(link->dhcp_lease, &domains) >= 0) { + STRV_FOREACH(p, domains) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = domain_build_json(AF_INET, *p, NETWORK_CONFIG_SOURCE_DHCP4, &s, elements + n); + if (r < 0) + goto finalize; + + n++; + } + } + } + + if (link->dhcp6_lease && + link->network->dhcp6_use_domains == use_domains) { + r = sd_dhcp6_lease_get_server_address(link->dhcp6_lease, &s.in6); + if (r < 0) + goto finalize; + + if (sd_dhcp6_lease_get_domains(link->dhcp6_lease, &domains) >= 0) { + STRV_FOREACH(p, domains) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = domain_build_json(AF_INET6, *p, NETWORK_CONFIG_SOURCE_DHCP6, &s, elements + n); + if (r < 0) + goto finalize; + + n++; + } + } + } + + if (link->network->ipv6_accept_ra_use_domains == use_domains) { + NDiscDNSSL *a; + + SET_FOREACH(a, link->ndisc_dnssl) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = domain_build_json(AF_INET6, NDISC_DNSSL_DOMAIN(a), NETWORK_CONFIG_SOURCE_NDISC, + &(union in_addr_union) { .in6 = a->router }, + elements + n); + if (r < 0) + goto finalize; + + n++; + } + } + } + + if (n == 0) { + *ret = NULL; + return 0; + } + + r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR(is_route ? "RouteDomains" : "SearchDomains", + JSON_BUILD_VARIANT_ARRAY(elements, n)))); + +finalize: + json_variant_unref_many(elements, n); + free(elements); + return r; +} + +static int nta_build_json(const char *nta, NetworkConfigSource s, JsonVariant **ret) { + assert(nta); + assert(ret); + + return json_build(ret, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_STRING("DNSSECNegativeTrustAnchor", nta), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(s)))); +} + +static int ntas_build_json(Link *link, JsonVariant **ret) { + JsonVariant **elements = NULL; + const char *nta; + size_t n = 0; + int r; + + assert(link); + assert(ret); + + if (!link->network) { + *ret = NULL; + return 0; + } + + SET_FOREACH(nta, link->dnssec_negative_trust_anchors ?: link->network->dnssec_negative_trust_anchors) { + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = nta_build_json(nta, + link->dnssec_negative_trust_anchors ? NETWORK_CONFIG_SOURCE_RUNTIME : NETWORK_CONFIG_SOURCE_STATIC, + elements + n); + if (r < 0) + goto finalize; + + n++; + } + + if (n == 0) { + *ret = NULL; + return 0; + } + + r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("DNSSECNegativeTrustAnchors", + JSON_BUILD_VARIANT_ARRAY(elements, n)))); + +finalize: + json_variant_unref_many(elements, n); + free(elements); + return r; +} + +static int dns_misc_build_json(Link *link, JsonVariant **ret) { + JsonVariant **elements = NULL; + ResolveSupport resolve_support; + NetworkConfigSource source; + DnsOverTlsMode mode; + size_t n = 0; + int t, r; + + assert(link); + assert(ret); + + if (!link->network) { + *ret = NULL; + return 0; + } + + resolve_support = link->llmnr >= 0 ? link->llmnr : link->network->llmnr; + if (resolve_support >= 0) { + source = link->llmnr >= 0 ? NETWORK_CONFIG_SOURCE_RUNTIME : NETWORK_CONFIG_SOURCE_STATIC; + + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = json_build(elements + n, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_STRING("LLMNR", resolve_support_to_string(resolve_support)), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(source)))); + if (r < 0) + goto finalize; + + n++; + } + + resolve_support = link->mdns >= 0 ? link->mdns : link->network->mdns; + if (resolve_support >= 0) { + source = link->mdns >= 0 ? NETWORK_CONFIG_SOURCE_RUNTIME : NETWORK_CONFIG_SOURCE_STATIC; + + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = json_build(elements + n, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_STRING("MDNS", resolve_support_to_string(resolve_support)), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(source)))); + if (r < 0) + goto finalize; + + n++; + } + + t = link->dns_default_route >= 0 ? link->dns_default_route : link->network->dns_default_route; + if (t >= 0) { + source = link->dns_default_route >= 0 ? NETWORK_CONFIG_SOURCE_RUNTIME : NETWORK_CONFIG_SOURCE_STATIC; + + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = json_build(elements + n, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_BOOLEAN("DNSDefaultRoute", t), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(source)))); + if (r < 0) + goto finalize; + + n++; + } + + mode = link->dns_over_tls_mode >= 0 ? link->dns_over_tls_mode : link->network->dns_over_tls_mode; + if (mode >= 0) { + source = link->dns_over_tls_mode >= 0 ? NETWORK_CONFIG_SOURCE_RUNTIME : NETWORK_CONFIG_SOURCE_STATIC; + + if (!GREEDY_REALLOC(elements, n + 1)) { + r = -ENOMEM; + goto finalize; + } + + r = json_build(elements + n, JSON_BUILD_OBJECT( + JSON_BUILD_PAIR_STRING("DNSOverTLS", dns_over_tls_mode_to_string(mode)), + JSON_BUILD_PAIR_STRING("ConfigSource", network_config_source_to_string(source)))); + if (r < 0) + goto finalize; + + n++; + } + + r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("DNSSettings", + JSON_BUILD_VARIANT_ARRAY(elements, n)))); + +finalize: + json_variant_unref_many(elements, n); + free(elements); + return r; +} + +int link_build_json(Link *link, JsonVariant **ret) { + _cleanup_(json_variant_unrefp) JsonVariant *v = NULL, *w = NULL; + _cleanup_free_ char *type = NULL, *flags = NULL; + int r; + + assert(link); + assert(ret); + + r = net_get_type_string(link->dev, link->iftype, &type); + if (r == -ENOMEM) + return r; + + r = link_flags_to_string_alloc(link->flags, &flags); + if (r < 0) + return r; + + r = json_build(&v, JSON_BUILD_OBJECT( + /* basic information */ + JSON_BUILD_PAIR_INTEGER("Index", link->ifindex), + JSON_BUILD_PAIR_STRING("Name", link->ifname), + JSON_BUILD_PAIR_STRV_NON_EMPTY("AlternativeNames", link->alternative_names), + JSON_BUILD_PAIR_CONDITION(link->master_ifindex > 0, + "MasterInterfaceIndex", JSON_BUILD_INTEGER(link->master_ifindex)), + JSON_BUILD_PAIR_STRING_NON_EMPTY("Kind", link->kind), + JSON_BUILD_PAIR_STRING("Type", type), + JSON_BUILD_PAIR_STRING_NON_EMPTY("Driver", link->driver), + JSON_BUILD_PAIR_UNSIGNED("Flags", link->flags), + JSON_BUILD_PAIR_STRING("FlagsString", flags), + JSON_BUILD_PAIR_UNSIGNED("KernelOperationalState", link->kernel_operstate), + JSON_BUILD_PAIR_STRING("KernelOperationalStateString", kernel_operstate_to_string(link->kernel_operstate)), + JSON_BUILD_PAIR_UNSIGNED("MTU", link->mtu), + JSON_BUILD_PAIR_UNSIGNED("MinimumMTU", link->min_mtu), + JSON_BUILD_PAIR_UNSIGNED("MaximumMTU", link->max_mtu), + JSON_BUILD_PAIR_HW_ADDR_NON_NULL("HardwareAddress", &link->hw_addr), + JSON_BUILD_PAIR_HW_ADDR_NON_NULL("PermanentHardwareAddress", &link->permanent_hw_addr), + JSON_BUILD_PAIR_HW_ADDR_NON_NULL("BroadcastAddress", &link->bcast_addr), + JSON_BUILD_PAIR_IN6_ADDR_NON_NULL("IPv6LinkLocalAddress", &link->ipv6ll_address), + /* wlan information */ + JSON_BUILD_PAIR_CONDITION(link->wlan_iftype > 0, "WirelessLanInterfaceType", + JSON_BUILD_UNSIGNED(link->wlan_iftype)), + JSON_BUILD_PAIR_CONDITION(link->wlan_iftype > 0, "WirelessLanInterfaceTypeString", + JSON_BUILD_STRING(nl80211_iftype_to_string(link->wlan_iftype))), + JSON_BUILD_PAIR_STRING_NON_EMPTY("SSID", link->ssid), + JSON_BUILD_PAIR_ETHER_ADDR_NON_NULL("BSSID", &link->bssid), + /* link state */ + JSON_BUILD_PAIR_STRING("AdministrativeState", link_state_to_string(link->state)), + JSON_BUILD_PAIR_STRING("OperationalState", link_operstate_to_string(link->operstate)), + JSON_BUILD_PAIR_STRING("CarrierState", link_carrier_state_to_string(link->carrier_state)), + JSON_BUILD_PAIR_STRING("AddressState", link_address_state_to_string(link->address_state)), + JSON_BUILD_PAIR_STRING("IPv4AddressState", link_address_state_to_string(link->ipv4_address_state)), + JSON_BUILD_PAIR_STRING("IPv6AddressState", link_address_state_to_string(link->ipv6_address_state)), + JSON_BUILD_PAIR_STRING("OnlineState", link_online_state_to_string(link->online_state)))); + if (r < 0) + return r; + + r = network_build_json(link->network, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = device_build_json(link->dev, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = dns_build_json(link, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = ntp_build_json(link, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = sip_build_json(link, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = domains_build_json(link, /* is_route = */ false, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = domains_build_json(link, /* is_route = */ true, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = ntas_build_json(link, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = dns_misc_build_json(link, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = addresses_build_json(link->addresses, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = neighbors_build_json(link->neighbors, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = nexthops_build_json(link->nexthops, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = routes_build_json(link->routes, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + *ret = TAKE_PTR(v); + return 0; +} + +static int link_json_compare(JsonVariant * const *a, JsonVariant * const *b) { + int64_t index_a, index_b; + + assert(a && *a); + assert(b && *b); + + index_a = json_variant_integer(json_variant_by_key(*a, "Index")); + index_b = json_variant_integer(json_variant_by_key(*b, "Index")); + + return CMP(index_a, index_b); +} + +static int links_build_json(Manager *manager, JsonVariant **ret) { + JsonVariant **elements; + Link *link; + size_t n = 0; + int r; + + assert(manager); + assert(ret); + + elements = new(JsonVariant*, hashmap_size(manager->links_by_index)); + if (!elements) + return -ENOMEM; + + HASHMAP_FOREACH(link, manager->links_by_index) { + r = link_build_json(link, elements + n); + if (r < 0) + goto finalize; + n++; + } + + typesafe_qsort(elements, n, link_json_compare); + + r = json_build(ret, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("Interfaces", JSON_BUILD_VARIANT_ARRAY(elements, n)))); + +finalize: + json_variant_unref_many(elements, n); + free(elements); + return r; +} + +int manager_build_json(Manager *manager, JsonVariant **ret) { + _cleanup_(json_variant_unrefp) JsonVariant *v = NULL, *w = NULL; + int r; + + assert(manager); + assert(ret); + + r = links_build_json(manager, &v); + if (r < 0) + return r; + + r = nexthops_build_json(manager->nexthops, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = routes_build_json(manager->routes, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + w = json_variant_unref(w); + + r = routing_policy_rules_build_json(manager->rules, &w); + if (r < 0) + return r; + + r = json_variant_merge(&v, w); + if (r < 0) + return r; + + *ret = TAKE_PTR(v); + return 0; +} |