src/network/networkd-dhcp-common.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include <netinet/in.h>
   5
   6 #include "conf-parser.h"
   7 #include "dhcp-duid-internal.h"
   8 #include "in-addr-util.h"
   9 #include "set.h"
  10 #include "time-util.h"
  11
  12 /* Special values for *_uplink_index. */
  13 #define UPLINK_INDEX_AUTO  0 /* uplink will be selected automatically */
  14 #define UPLINK_INDEX_NONE -1 /* uplink will not be selected automatically */
  15 #define UPLINK_INDEX_SELF -2 /* the interface itself is uplink */
  16
  17 #define DHCP_ROUTE_METRIC 1024
  18 #define IPV6RA_ROUTE_METRIC_HIGH    512
  19 #define IPV6RA_ROUTE_METRIC_MEDIUM 1024
  20 #define IPV6RA_ROUTE_METRIC_LOW    2048
  21 #define DHCP6PD_ROUTE_METRIC 256
  22
  23 typedef struct Link Link;
  24 typedef struct Manager Manager;
  25 typedef struct Network Network;
  26
  27 typedef enum DHCPUseDomains {
  28         DHCP_USE_DOMAINS_NO,
  29         DHCP_USE_DOMAINS_YES,
  30         DHCP_USE_DOMAINS_ROUTE,
  31         _DHCP_USE_DOMAINS_MAX,
  32         _DHCP_USE_DOMAINS_INVALID = -EINVAL,
  33 } DHCPUseDomains;
  34
  35 typedef enum DHCPOptionDataType {
  36         DHCP_OPTION_DATA_UINT8,
  37         DHCP_OPTION_DATA_UINT16,
  38         DHCP_OPTION_DATA_UINT32,
  39         DHCP_OPTION_DATA_STRING,
  40         DHCP_OPTION_DATA_IPV4ADDRESS,
  41         DHCP_OPTION_DATA_IPV6ADDRESS,
  42         _DHCP_OPTION_DATA_MAX,
  43         _DHCP_OPTION_DATA_INVALID,
  44 } DHCPOptionDataType;
  45
  46 typedef struct DUID {
  47         /* Value of Type in [DHCP] section */
  48         DUIDType type;
  49
  50         uint8_t raw_data_len;
  51         uint8_t raw_data[MAX_DUID_DATA_LEN];
  52         usec_t llt_time;
  53         bool set;
  54 } DUID;
  55
  56 uint32_t link_get_dhcp4_route_table(Link *link);
  57 uint32_t link_get_ndisc_route_table(Link *link);
  58
  59 bool link_dhcp_enabled(Link *link, int family);
  60 static inline bool link_dhcp4_enabled(Link *link) {
  61         return link_dhcp_enabled(link, AF_INET);
  62 }
  63 static inline bool link_dhcp6_enabled(Link *link) {
  64         return link_dhcp_enabled(link, AF_INET6);
  65 }
  66
  67 void network_adjust_dhcp(Network *network);
  68
  69 const DUID *link_get_duid(Link *link, int family);
  70 static inline const DUID *link_get_dhcp4_duid(Link *link) {
  71         return link_get_duid(link, AF_INET);
  72 }
  73 static inline const DUID *link_get_dhcp6_duid(Link *link) {
  74         return link_get_duid(link, AF_INET6);
  75 }
  76
  77 int dhcp_configure_duid(Link *link, const DUID *duid);
  78 int manager_request_product_uuid(Manager *m);
  79
  80 bool address_is_filtered(int family, const union in_addr_union *address, uint8_t prefixlen, Set *allow_list, Set *deny_list);
  81 static inline bool in4_address_is_filtered(const struct in_addr *address, Set *allow_list, Set *deny_list) {
  82         return address_is_filtered(AF_INET, &(union in_addr_union) { .in = *address }, 32, allow_list, deny_list);
  83 }
  84 static inline bool in6_prefix_is_filtered(const struct in6_addr *prefix, uint8_t prefixlen, Set *allow_list, Set *deny_list) {
  85         return address_is_filtered(AF_INET6, &(union in_addr_union) { .in6 = *prefix }, prefixlen, allow_list, deny_list);
  86 }
  87
  88 int link_get_captive_portal(Link *link, const char **ret);
  89
  90 const char* dhcp_use_domains_to_string(DHCPUseDomains p) _const_;
  91 DHCPUseDomains dhcp_use_domains_from_string(const char *s) _pure_;
  92
  93 const char *dhcp_option_data_type_to_string(DHCPOptionDataType d) _const_;
  94 DHCPOptionDataType dhcp_option_data_type_from_string(const char *d) _pure_;
  95
  96 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp);
  97 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_route_metric);
  98 CONFIG_PARSER_PROTOTYPE(config_parse_ndisc_route_metric);
  99 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_send_hostname);
 100 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_use_dns);
 101 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_use_domains);
 102 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_use_ntp);
 103 CONFIG_PARSER_PROTOTYPE(config_parse_iaid);
 104 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_or_ra_route_table);
 105 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_user_or_vendor_class);
 106 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_send_option);
 107 CONFIG_PARSER_PROTOTYPE(config_parse_dhcp_request_options);
 108 CONFIG_PARSER_PROTOTYPE(config_parse_duid_type);
 109 CONFIG_PARSER_PROTOTYPE(config_parse_manager_duid_type);
 110 CONFIG_PARSER_PROTOTYPE(config_parse_network_duid_type);
 111 CONFIG_PARSER_PROTOTYPE(config_parse_duid_rawdata);
 112 CONFIG_PARSER_PROTOTYPE(config_parse_manager_duid_rawdata);
 113 CONFIG_PARSER_PROTOTYPE(config_parse_network_duid_rawdata);
 114 CONFIG_PARSER_PROTOTYPE(config_parse_uplink);