src/libsystemd-network/dhcp-server-internal.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 /***
   5   Copyright © 2013 Intel Corporation. All rights reserved.
   6 ***/
   7
   8 #include "sd-dhcp-lease.h"
   9 #include "sd-dhcp-server.h"
  10
  11 #include "dhcp-client-id-internal.h"
  12 #include "dhcp-option.h"
  13 #include "forward.h"
  14 #include "network-common.h"
  15 #include "sparse-endian.h"
  16
  17 typedef enum DHCPRawOption {
  18         DHCP_RAW_OPTION_DATA_UINT8,
  19         DHCP_RAW_OPTION_DATA_UINT16,
  20         DHCP_RAW_OPTION_DATA_UINT32,
  21         DHCP_RAW_OPTION_DATA_STRING,
  22         DHCP_RAW_OPTION_DATA_IPV4ADDRESS,
  23         DHCP_RAW_OPTION_DATA_IPV6ADDRESS,
  24         _DHCP_RAW_OPTION_DATA_MAX,
  25         _DHCP_RAW_OPTION_DATA_INVALID,
  26 } DHCPRawOption;
  27
  28 typedef struct sd_dhcp_server {
  29         unsigned n_ref;
  30
  31         sd_event *event;
  32         int event_priority;
  33         sd_event_source *receive_message;
  34         sd_event_source *receive_broadcast;
  35         int fd;
  36         int fd_raw;
  37         int fd_broadcast;
  38
  39         int ifindex;
  40         char *ifname;
  41         bool bind_to_interface;
  42         be32_t address;
  43         be32_t netmask;
  44         be32_t subnet;
  45         uint32_t pool_offset;
  46         uint32_t pool_size;
  47
  48         char *timezone;
  49
  50         DHCPServerData servers[_SD_DHCP_LEASE_SERVER_TYPE_MAX];
  51         struct in_addr boot_server_address;
  52         char *boot_server_name;
  53         char *boot_filename;
  54
  55         OrderedSet *extra_options;
  56         OrderedSet *vendor_options;
  57
  58         bool emit_router;
  59         struct in_addr router_address;
  60
  61         Hashmap *bound_leases_by_client_id;
  62         Hashmap *bound_leases_by_address;
  63         Hashmap *static_leases_by_client_id;
  64         Hashmap *static_leases_by_address;
  65
  66         usec_t max_lease_time;
  67         usec_t default_lease_time;
  68         usec_t ipv6_only_preferred_usec;
  69         bool rapid_commit;
  70
  71         sd_dhcp_server_callback_t callback;
  72         void *callback_userdata;
  73
  74         struct in_addr relay_target;
  75
  76         char *agent_circuit_id;
  77         char *agent_remote_id;
  78
  79         int lease_dir_fd;
  80         char *lease_file;
  81 } sd_dhcp_server;
  82
  83 typedef struct DHCPRequest {
  84         /* received message */
  85         DHCPMessage *message;
  86
  87         /* options */
  88         sd_dhcp_client_id client_id;
  89         size_t max_optlen;
  90         be32_t server_id;
  91         be32_t requested_ip;
  92         usec_t lifetime;
  93         const uint8_t *agent_info_option;
  94         char *hostname;
  95         const uint8_t *parameter_request_list;
  96         size_t parameter_request_list_len;
  97         bool rapid_commit;
  98         triple_timestamp timestamp;
  99 } DHCPRequest;
 100
 101 int dhcp_server_handle_message(sd_dhcp_server *server, DHCPMessage *message,
 102                                size_t length, const triple_timestamp *timestamp);
 103 int dhcp_server_send_packet(sd_dhcp_server *server,
 104                             DHCPRequest *req, DHCPPacket *packet,
 105                             int type, size_t optoffset);
 106
 107 #define log_dhcp_server_errno(server, error, fmt, ...)          \
 108         log_interface_prefix_full_errno(                        \
 109                 "DHCPv4 server: ",                              \
 110                 sd_dhcp_server, server,                         \
 111                 error, fmt, ##__VA_ARGS__)
 112 #define log_dhcp_server(server, fmt, ...)                       \
 113         log_interface_prefix_full_errno_zerook(                 \
 114                 "DHCPv4 server: ",                              \
 115                 sd_dhcp_server, server,                         \
 116                 0, fmt, ##__VA_ARGS__)