dhcp-server-internal.h revision 59b8f6b628145586e87b8a4f6e29c755ad7d61ed
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright (C) 2013 Intel Corporation. All rights reserved.
Copyright (C) 2014 Tom Gundersen
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include "sd-event.h"
#include "sd-dhcp-server.h"
#include "hashmap.h"
#include "refcnt.h"
#include "util.h"
#include "log.h"
#include "dhcp-internal.h"
typedef struct DHCPClientId {
size_t length;
uint8_t *data;
} DHCPClientId;
typedef struct DHCPLease {
DHCPClientId client_id;
be32_t address;
be32_t gateway;
uint8_t chaddr[16];
usec_t expiration;
} DHCPLease;
struct sd_dhcp_server {
RefCount n_ref;
sd_event *event;
int event_priority;
sd_event_source *receive_message;
int fd;
int fd_raw;
int index;
be32_t address;
be32_t netmask;
be32_t pool_start;
size_t pool_size;
size_t next_offer;
Hashmap *leases_by_client_id;
DHCPLease **bound_leases;
};
typedef struct DHCPRequest {
/* received message */
DHCPMessage *message;
/* options */
DHCPClientId client_id;
size_t max_optlen;
be32_t server_id;
be32_t requested_ip;
int lifetime;
} DHCPRequest;
DEFINE_TRIVIAL_CLEANUP_FUNC(sd_dhcp_server*, sd_dhcp_server_unref);
#define _cleanup_dhcp_server_unref_ _cleanup_(sd_dhcp_server_unrefp)
#define log_dhcp_server(client, fmt, ...) log_meta(LOG_DEBUG, __FILE__, __LINE__, __func__, "DHCP SERVER: " fmt, ##__VA_ARGS__)
int dhcp_server_handle_message(sd_dhcp_server *server, DHCPMessage *message,
size_t length);
int dhcp_server_send_packet(sd_dhcp_server *server,
DHCPRequest *req, DHCPPacket *packet,
int type, size_t optoffset);
unsigned long client_id_hash_func(const void *p, const uint8_t hash_key[HASH_KEY_SIZE]);
int client_id_compare_func(const void *_a, const void *_b);