| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| |
| #include <netinet/in.h> |
| #include <linux/if_arp.h> |
| |
| #include "bus-error.h" |
| #include "bus-locator.h" |
| #include "dhcp-identifier.h" |
| #include "dhcp-internal.h" |
| #include "dhcp6-internal.h" |
| #include "escape.h" |
| #include "hexdecoct.h" |
| #include "in-addr-prefix-util.h" |
| #include "networkd-dhcp-common.h" |
| #include "networkd-link.h" |
| #include "networkd-manager.h" |
| #include "networkd-network.h" |
| #include "networkd-route-util.h" |
| #include "parse-util.h" |
| #include "socket-util.h" |
| #include "string-table.h" |
| #include "strv.h" |
| #include "vrf.h" |
| |
| static uint32_t link_get_vrf_table(Link *link) { |
| assert(link); |
| assert(link->network); |
| |
| return link->network->vrf ? VRF(link->network->vrf)->table : RT_TABLE_MAIN; |
| } |
| |
| uint32_t link_get_dhcp4_route_table(Link *link) { |
| assert(link); |
| assert(link->network); |
| |
| /* When the interface is part of an VRF use the VRFs routing table, unless |
| * another table is explicitly specified. */ |
| |
| if (link->network->dhcp_route_table_set) |
| return link->network->dhcp_route_table; |
| return link_get_vrf_table(link); |
| } |
| |
| uint32_t link_get_ipv6_accept_ra_route_table(Link *link) { |
| assert(link); |
| assert(link->network); |
| |
| if (link->network->ipv6_accept_ra_route_table_set) |
| return link->network->ipv6_accept_ra_route_table; |
| return link_get_vrf_table(link); |
| } |
| |
| bool link_dhcp_enabled(Link *link, int family) { |
| assert(link); |
| assert(IN_SET(family, AF_INET, AF_INET6)); |
| |
| /* Currently, sd-dhcp-client supports only ethernet and infiniband. */ |
| if (family == AF_INET && !IN_SET(link->iftype, ARPHRD_ETHER, ARPHRD_INFINIBAND)) |
| return false; |
| |
| if (family == AF_INET6 && !socket_ipv6_is_supported()) |
| return false; |
| |
| if (link->flags & IFF_LOOPBACK) |
| return false; |
| |
| if (link->iftype == ARPHRD_CAN) |
| return false; |
| |
| if (!link->network) |
| return false; |
| |
| return link->network->dhcp & (family == AF_INET ? ADDRESS_FAMILY_IPV4 : ADDRESS_FAMILY_IPV6); |
| } |
| |
| void network_adjust_dhcp(Network *network) { |
| assert(network); |
| assert(network->dhcp >= 0); |
| |
| if (network->dhcp == ADDRESS_FAMILY_NO) |
| return; |
| |
| /* Bonding slave does not support addressing. */ |
| if (network->bond) { |
| log_warning("%s: Cannot enable DHCP= when Bond= is specified, disabling DHCP=.", |
| network->filename); |
| network->dhcp = ADDRESS_FAMILY_NO; |
| return; |
| } |
| |
| if (!FLAGS_SET(network->link_local, ADDRESS_FAMILY_IPV6) && |
| FLAGS_SET(network->dhcp, ADDRESS_FAMILY_IPV6)) { |
| log_warning("%s: DHCPv6 client is enabled but IPv6 link-local addressing is disabled. " |
| "Disabling DHCPv6 client.", network->filename); |
| SET_FLAG(network->dhcp, ADDRESS_FAMILY_IPV6, false); |
| } |
| |
| network_adjust_dhcp4(network); |
| } |
| |
| static bool duid_needs_product_uuid(const DUID *duid) { |
| assert(duid); |
| |
| return duid->type == DUID_TYPE_UUID && duid->raw_data_len == 0; |
| } |
| |
| static const struct DUID fallback_duid = { .type = DUID_TYPE_EN }; |
| |
| const DUID *link_get_duid(Link *link, int family) { |
| const DUID *duid; |
| |
| assert(link); |
| assert(IN_SET(family, AF_INET, AF_INET6)); |
| |
| if (link->network) { |
| duid = family == AF_INET ? &link->network->dhcp_duid : &link->network->dhcp6_duid; |
| if (duid->type != _DUID_TYPE_INVALID) { |
| if (duid_needs_product_uuid(duid)) |
| return &link->manager->duid_product_uuid; |
| else |
| return duid; |
| } |
| } |
| |
| duid = family == AF_INET ? &link->manager->dhcp_duid : &link->manager->dhcp6_duid; |
| if (link->hw_addr.length == 0 && IN_SET(duid->type, DUID_TYPE_LLT, DUID_TYPE_LL)) |
| /* Fallback to DUID that works without MAC address. |
| * This is useful for tunnel devices without MAC address. */ |
| return &fallback_duid; |
| |
| return duid; |
| } |
| |
| static int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
| Manager *manager = ASSERT_PTR(userdata); |
| const sd_bus_error *e; |
| const void *a; |
| size_t sz; |
| int r; |
| |
| assert(m); |
| |
| /* To avoid calling GetProductUUID() bus method so frequently, set the flag below |
| * even if the method fails. */ |
| manager->has_product_uuid = true; |
| |
| e = sd_bus_message_get_error(m); |
| if (e) { |
| r = sd_bus_error_get_errno(e); |
| log_warning_errno(r, "Could not get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %s", |
| bus_error_message(e, r)); |
| return 0; |
| } |
| |
| r = sd_bus_message_read_array(m, 'y', &a, &sz); |
| if (r < 0) { |
| log_warning_errno(r, "Failed to get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %m"); |
| return 0; |
| } |
| |
| if (sz != sizeof(sd_id128_t)) { |
| log_warning("Invalid product UUID. Falling back to use machine-app-specific ID as DUID-UUID."); |
| return 0; |
| } |
| |
| log_debug("Successfully obtained product UUID"); |
| |
| memcpy(&manager->duid_product_uuid.raw_data, a, sz); |
| manager->duid_product_uuid.raw_data_len = sz; |
| |
| return 0; |
| } |
| |
| int manager_request_product_uuid(Manager *m) { |
| static bool bus_method_is_called = false; |
| int r; |
| |
| assert(m); |
| |
| if (bus_method_is_called) |
| return 0; |
| |
| if (sd_bus_is_ready(m->bus) <= 0 && !m->product_uuid_requested) { |
| log_debug("Not connected to system bus, requesting product UUID later."); |
| m->product_uuid_requested = true; |
| return 0; |
| } |
| |
| m->product_uuid_requested = false; |
| |
| r = bus_call_method_async( |
| m->bus, |
| NULL, |
| bus_hostname, |
| "GetProductUUID", |
| get_product_uuid_handler, |
| m, |
| "b", |
| false); |
| if (r < 0) |
| return log_warning_errno(r, "Failed to get product UUID: %m"); |
| |
| log_debug("Requesting product UUID."); |
| |
| bus_method_is_called = true; |
| |
| return 0; |
| } |
| |
| int dhcp_configure_duid(Link *link, const DUID *duid) { |
| Manager *m; |
| int r; |
| |
| assert(link); |
| assert(link->manager); |
| assert(duid); |
| |
| m = link->manager; |
| |
| if (!duid_needs_product_uuid(duid)) |
| return 1; |
| |
| if (m->has_product_uuid) |
| return 1; |
| |
| r = manager_request_product_uuid(m); |
| if (r < 0) { |
| log_link_warning_errno(link, r, |
| "Failed to get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %m"); |
| |
| m->has_product_uuid = true; /* Do not request UUID again on failure. */ |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| bool address_is_filtered(int family, const union in_addr_union *address, uint8_t prefixlen, Set *allow_list, Set *deny_list) { |
| struct in_addr_prefix *p; |
| |
| assert(IN_SET(family, AF_INET, AF_INET6)); |
| assert(address); |
| |
| if (allow_list) { |
| SET_FOREACH(p, allow_list) |
| if (p->family == family && |
| p->prefixlen <= prefixlen && |
| in_addr_prefix_covers(family, &p->address, p->prefixlen, address) > 0) |
| return false; |
| |
| return true; |
| } |
| |
| SET_FOREACH(p, deny_list) |
| if (p->family == family && |
| in_addr_prefix_intersect(family, &p->address, p->prefixlen, address, prefixlen) > 0) |
| return true; |
| |
| return false; |
| } |
| |
| 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) { |
| |
| AddressFamily *dhcp = data, s; |
| |
| assert(filename); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| /* Note that this is mostly like |
| * config_parse_address_family(), except that it |
| * understands some old names for the enum values */ |
| |
| s = address_family_from_string(rvalue); |
| if (s < 0) { |
| |
| /* Previously, we had a slightly different enum here, |
| * support its values for compatibility. */ |
| |
| s = dhcp_deprecated_address_family_from_string(rvalue); |
| if (s < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, s, |
| "Failed to parse DHCP option, ignoring: %s", rvalue); |
| return 0; |
| } |
| |
| log_syntax(unit, LOG_WARNING, filename, line, 0, |
| "DHCP=%s is deprecated, please use DHCP=%s instead.", |
| rvalue, address_family_to_string(s)); |
| } |
| |
| *dhcp = s; |
| return 0; |
| } |
| |
| int config_parse_dhcp_route_metric( |
| 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; |
| uint32_t metric; |
| int r; |
| |
| assert(filename); |
| assert(lvalue); |
| assert(IN_SET(ltype, AF_UNSPEC, AF_INET)); |
| assert(rvalue); |
| assert(data); |
| |
| r = safe_atou32(rvalue, &metric); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Failed to parse RouteMetric=%s, ignoring assignment: %m", rvalue); |
| return 0; |
| } |
| |
| switch (ltype) { |
| case AF_INET: |
| network->dhcp_route_metric = metric; |
| network->dhcp_route_metric_set = true; |
| break; |
| case AF_UNSPEC: |
| /* For backward compatibility. */ |
| if (!network->dhcp_route_metric_set) |
| network->dhcp_route_metric = metric; |
| if (!network->ipv6_accept_ra_route_metric_set) { |
| network->ipv6_accept_ra_route_metric_high = metric; |
| network->ipv6_accept_ra_route_metric_medium = metric; |
| network->ipv6_accept_ra_route_metric_low = metric; |
| } |
| break; |
| default: |
| assert_not_reached(); |
| } |
| |
| return 0; |
| } |
| |
| int config_parse_ipv6_accept_ra_route_metric( |
| 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 = ASSERT_PTR(userdata); |
| uint32_t metric_high, metric_medium, metric_low; |
| int r, s, t; |
| |
| assert(filename); |
| assert(rvalue); |
| |
| if (safe_atou32(rvalue, &metric_low) >= 0) |
| metric_high = metric_medium = metric_low; |
| else { |
| _cleanup_free_ char *high = NULL, *medium = NULL, *low = NULL; |
| const char *p = rvalue; |
| |
| r = extract_many_words(&p, ":", EXTRACT_DONT_COALESCE_SEPARATORS, &high, &medium, &low, NULL); |
| if (r == -ENOMEM) |
| return log_oom(); |
| if (r != 3 || !isempty(p)) { |
| log_syntax(unit, LOG_WARNING, filename, line, r < 0 ? r : 0, |
| "Failed to parse RouteTable=%s, ignoring assignment: %m", rvalue); |
| return 0; |
| } |
| |
| r = safe_atou32(high, &metric_high); |
| s = safe_atou32(medium, &metric_medium); |
| t = safe_atou32(low, &metric_low); |
| if (r < 0 || s < 0 || t < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r < 0 ? r : s < 0 ? s : t, |
| "Failed to parse RouteTable=%s, ignoring assignment: %m", rvalue); |
| return 0; |
| } |
| |
| if (metric_high >= metric_medium || metric_medium >= metric_low) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, |
| "Invalid RouteTable=%s, ignoring assignment: %m", rvalue); |
| return 0; |
| } |
| } |
| |
| network->ipv6_accept_ra_route_metric_high = metric_high; |
| network->ipv6_accept_ra_route_metric_medium = metric_medium; |
| network->ipv6_accept_ra_route_metric_low = metric_low; |
| network->ipv6_accept_ra_route_metric_set = true; |
| |
| return 0; |
| } |
| |
| int config_parse_dhcp_use_dns( |
| const char* unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| |
| Network *network = userdata; |
| int r; |
| |
| assert(filename); |
| assert(lvalue); |
| assert(IN_SET(ltype, AF_UNSPEC, AF_INET, AF_INET6)); |
| assert(rvalue); |
| assert(data); |
| |
| r = parse_boolean(rvalue); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Failed to parse UseDNS=%s, ignoring assignment: %m", rvalue); |
| return 0; |
| } |
| |
| switch (ltype) { |
| case AF_INET: |
| network->dhcp_use_dns = r; |
| network->dhcp_use_dns_set = true; |
| break; |
| case AF_INET6: |
| network->dhcp6_use_dns = r; |
| network->dhcp6_use_dns_set = true; |
| break; |
| case AF_UNSPEC: |
| /* For backward compatibility. */ |
| if (!network->dhcp_use_dns_set) |
| network->dhcp_use_dns = r; |
| if (!network->dhcp6_use_dns_set) |
| network->dhcp6_use_dns = r; |
| break; |
| default: |
| assert_not_reached(); |
| } |
| |
| return 0; |
| } |
| |
| int config_parse_dhcp_use_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; |
| DHCPUseDomains d; |
| |
| assert(filename); |
| assert(lvalue); |
| assert(IN_SET(ltype, AF_UNSPEC, AF_INET, AF_INET6)); |
| assert(rvalue); |
| assert(data); |
| |
| d = dhcp_use_domains_from_string(rvalue); |
| if (d < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, d, |
| "Failed to parse %s=%s, ignoring assignment: %m", lvalue, rvalue); |
| return 0; |
| } |
| |
| switch (ltype) { |
| case AF_INET: |
| network->dhcp_use_domains = d; |
| network->dhcp_use_domains_set = true; |
| break; |
| case AF_INET6: |
| network->dhcp6_use_domains = d; |
| network->dhcp6_use_domains_set = true; |
| break; |
| case AF_UNSPEC: |
| /* For backward compatibility. */ |
| if (!network->dhcp_use_domains_set) |
| network->dhcp_use_domains = d; |
| if (!network->dhcp6_use_domains_set) |
| network->dhcp6_use_domains = d; |
| break; |
| default: |
| assert_not_reached(); |
| } |
| |
| return 0; |
| } |
| |
| int config_parse_dhcp_use_ntp( |
| const char* unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| |
| Network *network = userdata; |
| int r; |
| |
| assert(filename); |
| assert(lvalue); |
| assert(IN_SET(ltype, AF_UNSPEC, AF_INET, AF_INET6)); |
| assert(rvalue); |
| assert(data); |
| |
| r = parse_boolean(rvalue); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Failed to parse UseNTP=%s, ignoring assignment: %m", rvalue); |
| return 0; |
| } |
| |
| switch (ltype) { |
| case AF_INET: |
| network->dhcp_use_ntp = r; |
| network->dhcp_use_ntp_set = true; |
| break; |
| case AF_INET6: |
| network->dhcp6_use_ntp = r; |
| network->dhcp6_use_ntp_set = true; |
| break; |
| case AF_UNSPEC: |
| /* For backward compatibility. */ |
| if (!network->dhcp_use_ntp_set) |
| network->dhcp_use_ntp = r; |
| if (!network->dhcp6_use_ntp_set) |
| network->dhcp6_use_ntp = r; |
| break; |
| default: |
| assert_not_reached(); |
| } |
| |
| return 0; |
| } |
| |
| int config_parse_dhcp_or_ra_route_table( |
| const char *unit, |
| const char *filename, |
| unsigned line, |
| const char *section, |
| unsigned section_line, |
| const char *lvalue, |
| int ltype, |
| const char *rvalue, |
| void *data, |
| void *userdata) { |
| |
| Network *network = ASSERT_PTR(userdata); |
| uint32_t rt; |
| int r; |
| |
| assert(filename); |
| assert(lvalue); |
| assert(IN_SET(ltype, AF_INET, AF_INET6)); |
| assert(rvalue); |
| |
| r = manager_get_route_table_from_string(network->manager, rvalue, &rt); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Failed to parse RouteTable=%s, ignoring assignment: %m", rvalue); |
| return 0; |
| } |
| |
| switch (ltype) { |
| case AF_INET: |
| network->dhcp_route_table = rt; |
| network->dhcp_route_table_set = true; |
| break; |
| case AF_INET6: |
| network->ipv6_accept_ra_route_table = rt; |
| network->ipv6_accept_ra_route_table_set = true; |
| break; |
| default: |
| assert_not_reached(); |
| } |
| |
| return 0; |
| } |
| |
| int config_parse_iaid( |
| 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 = ASSERT_PTR(userdata); |
| uint32_t iaid; |
| int r; |
| |
| assert(filename); |
| assert(lvalue); |
| assert(rvalue); |
| assert(IN_SET(ltype, AF_INET, AF_INET6)); |
| |
| r = safe_atou32(rvalue, &iaid); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Unable to read IAID, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| if (ltype == AF_INET) { |
| network->dhcp_iaid = iaid; |
| network->dhcp_iaid_set = true; |
| if (!network->dhcp6_iaid_set_explicitly) { |
| /* Backward compatibility. Previously, IAID is shared by DHCPv4 and DHCPv6. |
| * If DHCPv6 IAID is not specified explicitly, then use DHCPv4 IAID for DHCPv6. */ |
| network->dhcp6_iaid = iaid; |
| network->dhcp6_iaid_set = true; |
| } |
| } else { |
| assert(ltype == AF_INET6); |
| network->dhcp6_iaid = iaid; |
| network->dhcp6_iaid_set = true; |
| network->dhcp6_iaid_set_explicitly = true; |
| } |
| |
| return 0; |
| } |
| |
| int config_parse_dhcp_user_or_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 = ASSERT_PTR(data); |
| int r; |
| |
| assert(lvalue); |
| assert(rvalue); |
| assert(IN_SET(ltype, AF_INET, AF_INET6)); |
| |
| if (isempty(rvalue)) { |
| *l = strv_free(*l); |
| return 0; |
| } |
| |
| for (const char *p = rvalue;;) { |
| _cleanup_free_ char *w = NULL; |
| size_t len; |
| |
| 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 user classes option, ignoring: %s", rvalue); |
| return 0; |
| } |
| if (r == 0) |
| return 0; |
| |
| len = strlen(w); |
| if (ltype == AF_INET) { |
| if (len > UINT8_MAX || len == 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, |
| "%s length is not in the range 1…255, ignoring.", w); |
| continue; |
| } |
| } else { |
| if (len > UINT16_MAX || len == 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, |
| "%s length is not in the range 1…65535, ignoring.", w); |
| continue; |
| } |
| } |
| |
| r = strv_consume(l, TAKE_PTR(w)); |
| if (r < 0) |
| return log_oom(); |
| } |
| } |
| |
| 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; |
| _cleanup_(sd_dhcp6_option_unrefp) sd_dhcp6_option *opt6 = NULL; |
| _unused_ _cleanup_(sd_dhcp_option_unrefp) sd_dhcp_option *old4 = NULL; |
| _unused_ _cleanup_(sd_dhcp6_option_unrefp) sd_dhcp6_option *old6 = NULL; |
| uint32_t uint32_data, enterprise_identifier = 0; |
| _cleanup_free_ char *word = NULL, *q = NULL; |
| OrderedHashmap **options = ASSERT_PTR(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); |
| |
| 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, type, |
| "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:{ |
| uint16_t k; |
| |
| r = safe_atou16(p, &k); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Failed to parse DHCP uint16 data, ignoring assignment: %s", p); |
| return 0; |
| } |
| |
| uint16_data = htobe16(k); |
| udata = &uint16_data; |
| sz = sizeof(uint16_t); |
| break; |
| } |
| case DHCP_OPTION_DATA_UINT32: { |
| uint32_t k; |
| |
| r = safe_atou32(p, &k); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Failed to parse DHCP uint32 data, ignoring assignment: %s", p); |
| return 0; |
| } |
| |
| uint32_data = htobe32(k); |
| 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 = userdata; |
| 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 (const char *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); |
| } |
| } |
| |
| 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); |
| |
| static const char* const duid_type_table[_DUID_TYPE_MAX] = { |
| [DUID_TYPE_LLT] = "link-layer-time", |
| [DUID_TYPE_EN] = "vendor", |
| [DUID_TYPE_LL] = "link-layer", |
| [DUID_TYPE_UUID] = "uuid", |
| }; |
| DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(duid_type, DUIDType); |
| |
| int config_parse_duid_type( |
| 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_free_ char *type_string = NULL; |
| const char *p = ASSERT_PTR(rvalue); |
| bool force = ltype; |
| DUID *duid = ASSERT_PTR(data); |
| DUIDType type; |
| int r; |
| |
| assert(filename); |
| assert(lvalue); |
| |
| if (!force && duid->set) |
| return 0; |
| |
| r = extract_first_word(&p, &type_string, ":", 0); |
| if (r == -ENOMEM) |
| return log_oom(); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Invalid syntax, ignoring: %s", rvalue); |
| return 0; |
| } |
| if (r == 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, |
| "Failed to extract DUID type from '%s', ignoring.", rvalue); |
| return 0; |
| } |
| |
| type = duid_type_from_string(type_string); |
| if (type < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, type, |
| "Failed to parse DUID type '%s', ignoring.", type_string); |
| return 0; |
| } |
| |
| if (!isempty(p)) { |
| usec_t u; |
| |
| if (type != DUID_TYPE_LLT) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Invalid syntax, ignoring: %s", rvalue); |
| return 0; |
| } |
| |
| r = parse_timestamp(p, &u); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Failed to parse timestamp, ignoring: %s", p); |
| return 0; |
| } |
| |
| duid->llt_time = u; |
| } |
| |
| duid->type = type; |
| duid->set = force; |
| |
| return 0; |
| } |
| |
| int config_parse_manager_duid_type( |
| 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) { |
| |
| Manager *manager = ASSERT_PTR(userdata); |
| int r; |
| |
| /* For backward compatibility. Setting both DHCPv4 and DHCPv6 DUID if they are not specified explicitly. */ |
| |
| r = config_parse_duid_type(unit, filename, line, section, section_line, lvalue, false, rvalue, &manager->dhcp_duid, manager); |
| if (r < 0) |
| return r; |
| |
| return config_parse_duid_type(unit, filename, line, section, section_line, lvalue, false, rvalue, &manager->dhcp6_duid, manager); |
| } |
| |
| int config_parse_network_duid_type( |
| 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 = ASSERT_PTR(userdata); |
| int r; |
| |
| r = config_parse_duid_type(unit, filename, line, section, section_line, lvalue, true, rvalue, &network->dhcp_duid, network); |
| if (r < 0) |
| return r; |
| |
| /* For backward compatibility, also set DHCPv6 DUID if not specified explicitly. */ |
| return config_parse_duid_type(unit, filename, line, section, section_line, lvalue, false, rvalue, &network->dhcp6_duid, network); |
| } |
| |
| int config_parse_duid_rawdata( |
| 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) { |
| |
| uint8_t raw_data[MAX_DUID_LEN]; |
| unsigned count = 0; |
| bool force = ltype; |
| DUID *duid = ASSERT_PTR(data); |
| |
| assert(filename); |
| assert(lvalue); |
| assert(rvalue); |
| |
| if (!force && duid->set) |
| return 0; |
| |
| /* RawData contains DUID in format "NN:NN:NN..." */ |
| for (const char *p = rvalue;;) { |
| int n1, n2, len, r; |
| uint32_t byte; |
| _cleanup_free_ char *cbyte = NULL; |
| |
| r = extract_first_word(&p, &cbyte, ":", 0); |
| if (r == -ENOMEM) |
| return log_oom(); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to read DUID, ignoring assignment: %s.", rvalue); |
| return 0; |
| } |
| if (r == 0) |
| break; |
| |
| if (count >= MAX_DUID_LEN) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, "Max DUID length exceeded, ignoring assignment: %s.", rvalue); |
| return 0; |
| } |
| |
| len = strlen(cbyte); |
| if (!IN_SET(len, 1, 2)) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid length - DUID byte: %s, ignoring assignment: %s.", cbyte, rvalue); |
| return 0; |
| } |
| n1 = unhexchar(cbyte[0]); |
| if (len == 2) |
| n2 = unhexchar(cbyte[1]); |
| else |
| n2 = 0; |
| |
| if (n1 < 0 || n2 < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid DUID byte: %s. Ignoring assignment: %s.", cbyte, rvalue); |
| return 0; |
| } |
| |
| byte = ((uint8_t) n1 << (4 * (len-1))) | (uint8_t) n2; |
| raw_data[count++] = byte; |
| } |
| |
| assert_cc(sizeof(raw_data) == sizeof(duid->raw_data)); |
| memcpy(duid->raw_data, raw_data, count); |
| duid->raw_data_len = count; |
| duid->set = force; |
| |
| return 0; |
| } |
| |
| int config_parse_manager_duid_rawdata( |
| 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) { |
| |
| Manager *manager = ASSERT_PTR(userdata); |
| int r; |
| |
| /* For backward compatibility. Setting both DHCPv4 and DHCPv6 DUID if they are not specified explicitly. */ |
| |
| r = config_parse_duid_rawdata(unit, filename, line, section, section_line, lvalue, false, rvalue, &manager->dhcp_duid, manager); |
| if (r < 0) |
| return r; |
| |
| return config_parse_duid_rawdata(unit, filename, line, section, section_line, lvalue, false, rvalue, &manager->dhcp6_duid, manager); |
| } |
| |
| int config_parse_network_duid_rawdata( |
| 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 = ASSERT_PTR(userdata); |
| int r; |
| |
| r = config_parse_duid_rawdata(unit, filename, line, section, section_line, lvalue, true, rvalue, &network->dhcp_duid, network); |
| if (r < 0) |
| return r; |
| |
| /* For backward compatibility, also set DHCPv6 DUID if not specified explicitly. */ |
| return config_parse_duid_rawdata(unit, filename, line, section, section_line, lvalue, false, rvalue, &network->dhcp6_duid, network); |
| } |
| |
| int config_parse_uplink( |
| 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 = ASSERT_PTR(userdata); |
| bool accept_none = true; |
| int *index, r; |
| char **name; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| |
| if (streq(section, "DHCPServer")) { |
| index = &network->dhcp_server_uplink_index; |
| name = &network->dhcp_server_uplink_name; |
| } else if (streq(section, "IPv6SendRA")) { |
| index = &network->router_uplink_index; |
| name = &network->router_uplink_name; |
| } else if (STR_IN_SET(section, "DHCPv6PrefixDelegation", "DHCPPrefixDelegation")) { |
| index = &network->dhcp_pd_uplink_index; |
| name = &network->dhcp_pd_uplink_name; |
| accept_none = false; |
| } else |
| assert_not_reached(); |
| |
| if (isempty(rvalue) || streq(rvalue, ":auto")) { |
| *index = UPLINK_INDEX_AUTO; |
| *name = mfree(*name); |
| return 0; |
| } |
| |
| if (accept_none && streq(rvalue, ":none")) { |
| *index = UPLINK_INDEX_NONE; |
| *name = mfree(*name); |
| return 0; |
| } |
| |
| if (!accept_none && streq(rvalue, ":self")) { |
| *index = UPLINK_INDEX_SELF; |
| *name = mfree(*name); |
| return 0; |
| } |
| |
| r = parse_ifindex(rvalue); |
| if (r > 0) { |
| *index = r; |
| *name = mfree(*name); |
| return 0; |
| } |
| |
| if (!ifname_valid_full(rvalue, IFNAME_VALID_ALTERNATIVE)) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, |
| "Invalid interface name in %s=, ignoring assignment: %s", lvalue, rvalue); |
| return 0; |
| } |
| |
| /* The interface name will be resolved later. */ |
| r = free_and_strdup_warn(name, rvalue); |
| if (r < 0) |
| return r; |
| |
| /* Note, if uplink_name is set, then uplink_index will be ignored. So, the below does not mean |
| * an uplink interface will be selected automatically. */ |
| *index = UPLINK_INDEX_AUTO; |
| return 0; |
| } |
