937 lines
31 KiB
C
937 lines
31 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include <netinet/in.h>
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#include <linux/if_arp.h>
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#include "bus-error.h"
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#include "dhcp-internal.h"
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#include "dhcp6-internal.h"
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#include "escape.h"
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#include "in-addr-util.h"
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#include "networkd-dhcp-common.h"
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#include "networkd-link.h"
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#include "networkd-manager.h"
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#include "networkd-network.h"
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#include "parse-util.h"
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#include "socket-util.h"
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#include "string-table.h"
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#include "strv.h"
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bool link_dhcp_enabled(Link *link, int family) {
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assert(link);
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assert(IN_SET(family, AF_INET, AF_INET6));
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if (family == AF_INET6 && !socket_ipv6_is_supported())
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return false;
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if (link->flags & IFF_LOOPBACK)
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return false;
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if (link->iftype == ARPHRD_CAN)
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return false;
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if (!link->network)
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return false;
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return link->network->dhcp & (family == AF_INET ? ADDRESS_FAMILY_IPV4 : ADDRESS_FAMILY_IPV6);
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}
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void network_adjust_dhcp(Network *network) {
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assert(network);
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assert(network->dhcp >= 0);
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if (network->dhcp == ADDRESS_FAMILY_NO)
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return;
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/* Bonding slave does not support addressing. */
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if (network->bond) {
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log_warning("%s: Cannot enable DHCP= when Bond= is specified, disabling DHCP=.",
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network->filename);
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network->dhcp = ADDRESS_FAMILY_NO;
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return;
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}
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if (!FLAGS_SET(network->link_local, ADDRESS_FAMILY_IPV6) &&
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FLAGS_SET(network->dhcp, ADDRESS_FAMILY_IPV6)) {
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log_warning("%s: DHCPv6 client is enabled but IPv6 link local addressing is disabled. "
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"Disabling DHCPv6 client.", network->filename);
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SET_FLAG(network->dhcp, ADDRESS_FAMILY_IPV6, false);
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}
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}
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static struct DUID fallback_duid = { .type = DUID_TYPE_EN };
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DUID* link_get_duid(Link *link) {
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if (link->network->duid.type != _DUID_TYPE_INVALID)
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return &link->network->duid;
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else if (link->hw_addr.length == 0 && IN_SET(link->manager->duid.type, DUID_TYPE_LLT, DUID_TYPE_LL))
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/* Fallback to DUID that works without MAC address.
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* This is useful for tunnel devices without MAC address. */
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return &fallback_duid;
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else
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return &link->manager->duid;
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}
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static int duid_set_uuid(DUID *duid, sd_id128_t uuid) {
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assert(duid);
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if (duid->raw_data_len > 0)
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return 0;
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if (duid->type != DUID_TYPE_UUID)
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return -EINVAL;
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memcpy(&duid->raw_data, &uuid, sizeof(sd_id128_t));
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duid->raw_data_len = sizeof(sd_id128_t);
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return 1;
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}
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static int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
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Manager *manager = userdata;
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const sd_bus_error *e;
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const void *a;
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size_t sz;
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DUID *duid;
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Link *link;
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int r;
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assert(m);
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assert(manager);
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e = sd_bus_message_get_error(m);
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if (e) {
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r = sd_bus_error_get_errno(e);
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log_warning_errno(r, "Could not get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %s",
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bus_error_message(e, r));
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goto configure;
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}
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r = sd_bus_message_read_array(m, 'y', &a, &sz);
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if (r < 0) {
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log_warning_errno(r, "Failed to get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %m");
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goto configure;
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}
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if (sz != sizeof(sd_id128_t)) {
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log_warning("Invalid product UUID. Falling back to use machine-app-specific ID as DUID-UUID.");
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goto configure;
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}
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memcpy(&manager->product_uuid, a, sz);
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while ((duid = set_steal_first(manager->duids_requesting_uuid)))
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(void) duid_set_uuid(duid, manager->product_uuid);
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manager->duids_requesting_uuid = set_free(manager->duids_requesting_uuid);
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configure:
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while ((link = set_steal_first(manager->links_requesting_uuid))) {
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link_unref(link);
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r = link_configure(link);
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if (r < 0)
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link_enter_failed(link);
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}
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manager->links_requesting_uuid = set_free(manager->links_requesting_uuid);
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/* To avoid calling GetProductUUID() bus method so frequently, set the flag below
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* even if the method fails. */
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manager->has_product_uuid = true;
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return 1;
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}
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int manager_request_product_uuid(Manager *m, Link *link) {
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int r;
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assert(m);
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if (m->has_product_uuid)
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return 0;
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log_debug("Requesting product UUID");
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if (link) {
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DUID *duid;
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assert_se(duid = link_get_duid(link));
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r = set_ensure_put(&m->links_requesting_uuid, NULL, link);
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if (r < 0)
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return log_oom();
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if (r > 0)
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link_ref(link);
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r = set_ensure_put(&m->duids_requesting_uuid, NULL, duid);
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if (r < 0)
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return log_oom();
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}
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if (!m->bus || sd_bus_is_ready(m->bus) <= 0) {
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log_debug("Not connected to system bus, requesting product UUID later.");
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return 0;
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}
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r = sd_bus_call_method_async(
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m->bus,
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NULL,
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"org.freedesktop.hostname1",
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"/org/freedesktop/hostname1",
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"org.freedesktop.hostname1",
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"GetProductUUID",
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get_product_uuid_handler,
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m,
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"b",
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false);
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if (r < 0)
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return log_warning_errno(r, "Failed to get product UUID: %m");
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return 0;
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}
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static bool link_requires_uuid(Link *link) {
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const DUID *duid;
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assert(link);
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assert(link->manager);
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assert(link->network);
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duid = link_get_duid(link);
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if (duid->type != DUID_TYPE_UUID || duid->raw_data_len != 0)
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return false;
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if (link_dhcp4_enabled(link) && IN_SET(link->network->dhcp_client_identifier, DHCP_CLIENT_ID_DUID, DHCP_CLIENT_ID_DUID_ONLY))
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return true;
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if (link_dhcp6_enabled(link) || link_ipv6_accept_ra_enabled(link))
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return true;
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return false;
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}
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int link_configure_duid(Link *link) {
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Manager *m;
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DUID *duid;
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int r;
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assert(link);
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assert(link->manager);
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assert(link->network);
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m = link->manager;
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duid = link_get_duid(link);
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if (!link_requires_uuid(link))
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return 1;
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if (m->has_product_uuid) {
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(void) duid_set_uuid(duid, m->product_uuid);
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return 1;
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}
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if (!m->links_requesting_uuid) {
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r = manager_request_product_uuid(m, link);
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if (r < 0) {
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if (r == -ENOMEM)
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return r;
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log_link_warning_errno(link, r,
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"Failed to get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %m");
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return 1;
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}
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} else {
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r = set_put(m->links_requesting_uuid, link);
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if (r < 0)
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return log_oom();
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if (r > 0)
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link_ref(link);
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r = set_put(m->duids_requesting_uuid, duid);
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if (r < 0)
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return log_oom();
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}
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return 0;
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}
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int config_parse_dhcp(
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const char* unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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AddressFamily *dhcp = data, s;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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/* Note that this is mostly like
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* config_parse_address_family(), except that it
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* understands some old names for the enum values */
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s = address_family_from_string(rvalue);
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if (s < 0) {
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/* Previously, we had a slightly different enum here,
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* support its values for compatibility. */
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if (streq(rvalue, "none"))
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s = ADDRESS_FAMILY_NO;
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else if (streq(rvalue, "v4"))
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s = ADDRESS_FAMILY_IPV4;
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else if (streq(rvalue, "v6"))
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s = ADDRESS_FAMILY_IPV6;
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else if (streq(rvalue, "both"))
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s = ADDRESS_FAMILY_YES;
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else {
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log_syntax(unit, LOG_WARNING, filename, line, 0,
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"Failed to parse DHCP option, ignoring: %s", rvalue);
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return 0;
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}
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log_syntax(unit, LOG_WARNING, filename, line, 0,
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"DHCP=%s is deprecated, please use DHCP=%s instead.",
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rvalue, address_family_to_string(s));
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}
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*dhcp = s;
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return 0;
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}
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int config_parse_dhcp_route_metric(
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const char* unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Network *network = data;
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uint32_t metric;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = safe_atou32(rvalue, &metric);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"Failed to parse RouteMetric=%s, ignoring assignment: %m", rvalue);
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return 0;
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}
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if (streq_ptr(section, "DHCPv4")) {
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network->dhcp_route_metric = metric;
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network->dhcp_route_metric_set = true;
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} else if (streq_ptr(section, "DHCPv6")) {
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network->dhcp6_route_metric = metric;
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network->dhcp6_route_metric_set = true;
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} else { /* [DHCP] section */
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if (!network->dhcp_route_metric_set)
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network->dhcp_route_metric = metric;
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if (!network->dhcp6_route_metric_set)
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network->dhcp6_route_metric = metric;
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}
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return 0;
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}
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int config_parse_dhcp_use_dns(
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const char* unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Network *network = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = parse_boolean(rvalue);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"Failed to parse UseDNS=%s, ignoring assignment: %m", rvalue);
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return 0;
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}
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if (streq_ptr(section, "DHCPv4")) {
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network->dhcp_use_dns = r;
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network->dhcp_use_dns_set = true;
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} else if (streq_ptr(section, "DHCPv6")) {
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network->dhcp6_use_dns = r;
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network->dhcp6_use_dns_set = true;
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} else { /* [DHCP] section */
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if (!network->dhcp_use_dns_set)
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network->dhcp_use_dns = r;
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if (!network->dhcp6_use_dns_set)
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network->dhcp6_use_dns = r;
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}
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return 0;
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}
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int config_parse_dhcp_use_ntp(
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const char* unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Network *network = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = parse_boolean(rvalue);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"Failed to parse UseNTP=%s, ignoring assignment: %m", rvalue);
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return 0;
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}
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if (streq_ptr(section, "DHCPv4")) {
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network->dhcp_use_ntp = r;
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network->dhcp_use_ntp_set = true;
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} else if (streq_ptr(section, "DHCPv6")) {
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network->dhcp6_use_ntp = r;
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network->dhcp6_use_ntp_set = true;
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} else { /* [DHCP] section */
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if (!network->dhcp_use_ntp_set)
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network->dhcp_use_ntp = r;
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if (!network->dhcp6_use_ntp_set)
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network->dhcp6_use_ntp = r;
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}
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return 0;
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}
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int config_parse_section_route_table(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Network *network = data;
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uint32_t rt;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(data);
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r = safe_atou32(rvalue, &rt);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"Failed to parse RouteTable=%s, ignoring assignment: %m", rvalue);
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return 0;
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}
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if (STRPTR_IN_SET(section, "DHCP", "DHCPv4")) {
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network->dhcp_route_table = rt;
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network->dhcp_route_table_set = true;
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} else { /* section is IPv6AcceptRA */
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network->ipv6_accept_ra_route_table = rt;
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network->ipv6_accept_ra_route_table_set = true;
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}
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return 0;
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}
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int config_parse_iaid(const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Network *network = data;
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uint32_t iaid;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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assert(network);
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r = safe_atou32(rvalue, &iaid);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"Unable to read IAID, ignoring assignment: %s", rvalue);
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return 0;
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}
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network->iaid = iaid;
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network->iaid_set = true;
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return 0;
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}
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int config_parse_dhcp_user_class(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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char ***l = data;
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int r;
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assert(l);
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assert(lvalue);
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assert(rvalue);
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if (isempty(rvalue)) {
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*l = strv_free(*l);
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return 0;
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}
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for (const char *p = rvalue;;) {
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_cleanup_free_ char *w = NULL;
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r = extract_first_word(&p, &w, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
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if (r == -ENOMEM)
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return log_oom();
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"Failed to split user classes option, ignoring: %s", rvalue);
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return 0;
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}
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if (r == 0)
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return 0;
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if (ltype == AF_INET) {
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if (strlen(w) > UINT8_MAX) {
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log_syntax(unit, LOG_WARNING, filename, line, 0,
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"%s length is not in the range 1-255, ignoring.", w);
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continue;
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}
|
|
} else {
|
|
if (strlen(w) > UINT16_MAX) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, 0,
|
|
"%s length is not in the range 1-65535, ignoring.", w);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
r = strv_push(l, w);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
w = NULL;
|
|
}
|
|
}
|
|
|
|
int config_parse_dhcp_vendor_class(
|
|
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 ***l = data;
|
|
int r;
|
|
|
|
assert(l);
|
|
assert(lvalue);
|
|
assert(rvalue);
|
|
|
|
if (isempty(rvalue)) {
|
|
*l = strv_free(*l);
|
|
return 0;
|
|
}
|
|
|
|
for (const char *p = rvalue;;) {
|
|
_cleanup_free_ char *w = NULL;
|
|
|
|
r = extract_first_word(&p, &w, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
|
|
if (r == -ENOMEM)
|
|
return log_oom();
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to split vendor classes option, ignoring: %s", rvalue);
|
|
return 0;
|
|
}
|
|
if (r == 0)
|
|
return 0;
|
|
|
|
if (strlen(w) > UINT8_MAX) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, 0,
|
|
"%s length is not in the range 1-255, ignoring.", w);
|
|
continue;
|
|
}
|
|
|
|
r = strv_push(l, w);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
w = NULL;
|
|
}
|
|
}
|
|
|
|
int config_parse_dhcp_send_option(
|
|
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_(sd_dhcp_option_unrefp) sd_dhcp_option *opt4 = NULL, *old4 = NULL;
|
|
_cleanup_(sd_dhcp6_option_unrefp) sd_dhcp6_option *opt6 = NULL, *old6 = NULL;
|
|
uint32_t uint32_data, enterprise_identifier = 0;
|
|
_cleanup_free_ char *word = NULL, *q = NULL;
|
|
OrderedHashmap **options = data;
|
|
uint16_t u16, uint16_data;
|
|
union in_addr_union addr;
|
|
DHCPOptionDataType type;
|
|
uint8_t u8, uint8_data;
|
|
const void *udata;
|
|
const char *p;
|
|
ssize_t sz;
|
|
int r;
|
|
|
|
assert(filename);
|
|
assert(lvalue);
|
|
assert(rvalue);
|
|
assert(data);
|
|
|
|
if (isempty(rvalue)) {
|
|
*options = ordered_hashmap_free(*options);
|
|
return 0;
|
|
}
|
|
|
|
p = rvalue;
|
|
if (ltype == AF_INET6 && streq(lvalue, "SendVendorOption")) {
|
|
r = extract_first_word(&p, &word, ":", 0);
|
|
if (r == -ENOMEM)
|
|
return log_oom();
|
|
if (r <= 0 || isempty(p)) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Invalid DHCP option, ignoring assignment: %s", rvalue);
|
|
return 0;
|
|
}
|
|
|
|
r = safe_atou32(word, &enterprise_identifier);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to parse DHCPv6 enterprise identifier data, ignoring assignment: %s", p);
|
|
return 0;
|
|
}
|
|
word = mfree(word);
|
|
}
|
|
|
|
r = extract_first_word(&p, &word, ":", 0);
|
|
if (r == -ENOMEM)
|
|
return log_oom();
|
|
if (r <= 0 || isempty(p)) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Invalid DHCP option, ignoring assignment: %s", rvalue);
|
|
return 0;
|
|
}
|
|
|
|
if (ltype == AF_INET6) {
|
|
r = safe_atou16(word, &u16);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Invalid DHCP option, ignoring assignment: %s", rvalue);
|
|
return 0;
|
|
}
|
|
if (u16 < 1 || u16 >= UINT16_MAX) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, 0,
|
|
"Invalid DHCP option, valid range is 1-65535, ignoring assignment: %s", rvalue);
|
|
return 0;
|
|
}
|
|
} else {
|
|
r = safe_atou8(word, &u8);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Invalid DHCP option, ignoring assignment: %s", rvalue);
|
|
return 0;
|
|
}
|
|
if (u8 < 1 || u8 >= UINT8_MAX) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, 0,
|
|
"Invalid DHCP option, valid range is 1-254, ignoring assignment: %s", rvalue);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
word = mfree(word);
|
|
r = extract_first_word(&p, &word, ":", 0);
|
|
if (r == -ENOMEM)
|
|
return log_oom();
|
|
if (r <= 0 || isempty(p)) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Invalid DHCP option, ignoring assignment: %s", rvalue);
|
|
return 0;
|
|
}
|
|
|
|
type = dhcp_option_data_type_from_string(word);
|
|
if (type < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, 0,
|
|
"Invalid DHCP option data type, ignoring assignment: %s", p);
|
|
return 0;
|
|
}
|
|
|
|
switch(type) {
|
|
case DHCP_OPTION_DATA_UINT8:{
|
|
r = safe_atou8(p, &uint8_data);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to parse DHCP uint8 data, ignoring assignment: %s", p);
|
|
return 0;
|
|
}
|
|
|
|
udata = &uint8_data;
|
|
sz = sizeof(uint8_t);
|
|
break;
|
|
}
|
|
case DHCP_OPTION_DATA_UINT16:{
|
|
r = safe_atou16(p, &uint16_data);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to parse DHCP uint16 data, ignoring assignment: %s", p);
|
|
return 0;
|
|
}
|
|
|
|
udata = &uint16_data;
|
|
sz = sizeof(uint16_t);
|
|
break;
|
|
}
|
|
case DHCP_OPTION_DATA_UINT32: {
|
|
r = safe_atou32(p, &uint32_data);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to parse DHCP uint32 data, ignoring assignment: %s", p);
|
|
return 0;
|
|
}
|
|
|
|
udata = &uint32_data;
|
|
sz = sizeof(uint32_t);
|
|
|
|
break;
|
|
}
|
|
case DHCP_OPTION_DATA_IPV4ADDRESS: {
|
|
r = in_addr_from_string(AF_INET, p, &addr);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to parse DHCP ipv4address data, ignoring assignment: %s", p);
|
|
return 0;
|
|
}
|
|
|
|
udata = &addr.in;
|
|
sz = sizeof(addr.in.s_addr);
|
|
break;
|
|
}
|
|
case DHCP_OPTION_DATA_IPV6ADDRESS: {
|
|
r = in_addr_from_string(AF_INET6, p, &addr);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to parse DHCP ipv6address data, ignoring assignment: %s", p);
|
|
return 0;
|
|
}
|
|
|
|
udata = &addr.in6;
|
|
sz = sizeof(addr.in6.s6_addr);
|
|
break;
|
|
}
|
|
case DHCP_OPTION_DATA_STRING:
|
|
sz = cunescape(p, UNESCAPE_ACCEPT_NUL, &q);
|
|
if (sz < 0)
|
|
log_syntax(unit, LOG_WARNING, filename, line, sz,
|
|
"Failed to decode DHCP option data, ignoring assignment: %s", p);
|
|
|
|
udata = q;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (ltype == AF_INET6) {
|
|
r = sd_dhcp6_option_new(u16, udata, sz, enterprise_identifier, &opt6);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to store DHCP option '%s', ignoring assignment: %m", rvalue);
|
|
return 0;
|
|
}
|
|
|
|
r = ordered_hashmap_ensure_allocated(options, &dhcp6_option_hash_ops);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
/* Overwrite existing option */
|
|
old6 = ordered_hashmap_get(*options, UINT_TO_PTR(u16));
|
|
r = ordered_hashmap_replace(*options, UINT_TO_PTR(u16), opt6);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to store DHCP option '%s', ignoring assignment: %m", rvalue);
|
|
return 0;
|
|
}
|
|
TAKE_PTR(opt6);
|
|
} else {
|
|
r = sd_dhcp_option_new(u8, udata, sz, &opt4);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to store DHCP option '%s', ignoring assignment: %m", rvalue);
|
|
return 0;
|
|
}
|
|
|
|
r = ordered_hashmap_ensure_allocated(options, &dhcp_option_hash_ops);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
/* Overwrite existing option */
|
|
old4 = ordered_hashmap_get(*options, UINT_TO_PTR(u8));
|
|
r = ordered_hashmap_replace(*options, UINT_TO_PTR(u8), opt4);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to store DHCP option '%s', ignoring assignment: %m", rvalue);
|
|
return 0;
|
|
}
|
|
TAKE_PTR(opt4);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int config_parse_dhcp_request_options(
|
|
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 = data;
|
|
const char *p;
|
|
int r;
|
|
|
|
assert(filename);
|
|
assert(lvalue);
|
|
assert(rvalue);
|
|
assert(data);
|
|
|
|
if (isempty(rvalue)) {
|
|
if (ltype == AF_INET)
|
|
network->dhcp_request_options = set_free(network->dhcp_request_options);
|
|
else
|
|
network->dhcp6_request_options = set_free(network->dhcp6_request_options);
|
|
|
|
return 0;
|
|
}
|
|
|
|
for (p = rvalue;;) {
|
|
_cleanup_free_ char *n = NULL;
|
|
uint32_t i;
|
|
|
|
r = extract_first_word(&p, &n, NULL, 0);
|
|
if (r == -ENOMEM)
|
|
return log_oom();
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to parse DHCP request option, ignoring assignment: %s",
|
|
rvalue);
|
|
return 0;
|
|
}
|
|
if (r == 0)
|
|
return 0;
|
|
|
|
r = safe_atou32(n, &i);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"DHCP request option is invalid, ignoring assignment: %s", n);
|
|
continue;
|
|
}
|
|
|
|
if (i < 1 || i >= UINT8_MAX) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, 0,
|
|
"DHCP request option is invalid, valid range is 1-254, ignoring assignment: %s", n);
|
|
continue;
|
|
}
|
|
|
|
r = set_ensure_put(ltype == AF_INET ? &network->dhcp_request_options : &network->dhcp6_request_options,
|
|
NULL, UINT32_TO_PTR(i));
|
|
if (r < 0)
|
|
log_syntax(unit, LOG_WARNING, filename, line, r,
|
|
"Failed to store DHCP request option '%s', ignoring assignment: %m", n);
|
|
}
|
|
}
|
|
|
|
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);
|
|
|
|
static const char * const dhcp_option_data_type_table[_DHCP_OPTION_DATA_MAX] = {
|
|
[DHCP_OPTION_DATA_UINT8] = "uint8",
|
|
[DHCP_OPTION_DATA_UINT16] = "uint16",
|
|
[DHCP_OPTION_DATA_UINT32] = "uint32",
|
|
[DHCP_OPTION_DATA_STRING] = "string",
|
|
[DHCP_OPTION_DATA_IPV4ADDRESS] = "ipv4address",
|
|
[DHCP_OPTION_DATA_IPV6ADDRESS] = "ipv6address",
|
|
};
|
|
|
|
DEFINE_STRING_TABLE_LOOKUP(dhcp_option_data_type, DHCPOptionDataType);
|