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NetBSD/usr.sbin/dhcp/includes/dhcpd.h

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/* dhcpd.h
Definitions for dhcpd... */
/*
* Copyright (c) 1995, 1996, 1997 The Internet Software Consortium.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of The Internet Software Consortium nor the names
* of its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This software has been written for the Internet Software Consortium
* by Ted Lemon <mellon@fugue.com> in cooperation with Vixie
* Enterprises. To learn more about the Internet Software Consortium,
* see ``http://www.vix.com/isc''. To learn more about Vixie
* Enterprises, see ``http://www.vix.com''.
*/
#ifndef __CYGWIN32__
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <arpa/inet.h>
#include <netdb.h>
#else
#define fd_set cygwin_fd_set
#include <sys/types.h>
#endif
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <ctype.h>
#include <time.h>
#include "cdefs.h"
#include "osdep.h"
#include "dhcp.h"
#include "tree.h"
#include "hash.h"
#include "inet.h"
#include "sysconf.h"
struct option_data {
int len;
u_int8_t *data;
};
struct string_list {
struct string_list *next;
char string [1];
};
/* A name server, from /etc/resolv.conf. */
struct name_server {
struct name_server *next;
struct sockaddr_in addr;
TIME rcdate;
};
/* A domain search list element. */
struct domain_search_list {
struct domain_search_list *next;
char *domain;
TIME rcdate;
};
/* A dhcp packet and the pointers to its option values. */
struct packet {
struct dhcp_packet *raw;
int packet_length;
int packet_type;
int options_valid;
int client_port;
struct iaddr client_addr;
struct interface_info *interface; /* Interface on which packet
was received. */
struct hardware *haddr; /* Physical link address
of local sender (maybe gateway). */
struct shared_network *shared_network;
struct option_data options [256];
};
struct hardware {
u_int8_t htype;
u_int8_t hlen;
u_int8_t haddr [16];
};
/* A dhcp lease declaration structure. */
struct lease {
struct lease *next;
struct lease *prev;
struct lease *n_uid, *n_hw;
struct lease *waitq_next;
struct iaddr ip_addr;
TIME starts, ends, timestamp;
unsigned char *uid;
int uid_len;
int uid_max;
unsigned char uid_buf [32];
char *hostname;
char *client_hostname;
struct host_decl *host;
struct subnet *subnet;
struct shared_network *shared_network;
struct hardware hardware_addr;
int flags;
# define STATIC_LEASE 1
# define BOOTP_LEASE 2
# define DYNAMIC_BOOTP_OK 4
# define PERSISTENT_FLAGS (DYNAMIC_BOOTP_OK)
# define EPHEMERAL_FLAGS (BOOTP_LEASE)
# define MS_NULL_TERMINATION 8
# define ABANDONED_LEASE 16
struct lease_state *state;
};
struct lease_state {
struct lease_state *next;
struct interface_info *ip;
TIME offered_expiry;
struct tree_cache *options [256];
u_int32_t expiry, renewal, rebind;
char *filename, *server_name;
u_int32_t xid;
u_int16_t secs;
u_int16_t bootp_flags;
struct in_addr ciaddr;
struct in_addr giaddr;
u_int8_t hops;
u_int8_t offer;
};
#define ROOT_GROUP 0
#define HOST_DECL 1
#define SHARED_NET_DECL 2
#define SUBNET_DECL 3
#define CLASS_DECL 4
#define GROUP_DECL 5
/* Possible modes in which discover_interfaces can run. */
#define DISCOVER_RUNNING 0
#define DISCOVER_SERVER 1
#define DISCOVER_UNCONFIGURED 2
#define DISCOVER_RELAY 3
#define DISCOVER_REQUESTED 4
/* Group of declarations that share common parameters. */
struct group {
struct group *next;
struct subnet *subnet;
struct shared_network *shared_network;
TIME default_lease_time;
TIME max_lease_time;
TIME bootp_lease_cutoff;
TIME bootp_lease_length;
char *filename;
char *server_name;
struct iaddr next_server;
int boot_unknown_clients;
int dynamic_bootp;
int allow_bootp;
int allow_booting;
int one_lease_per_client;
int get_lease_hostnames;
int use_host_decl_names;
struct tree_cache *options [256];
};
/* A dhcp host declaration structure. */
struct host_decl {
struct host_decl *n_ipaddr;
char *name;
struct hardware interface;
struct tree_cache *fixed_addr;
struct group *group;
};
struct shared_network {
struct shared_network *next;
char *name;
struct subnet *subnets;
struct interface_info *interface;
struct lease *leases;
struct lease *insertion_point;
struct lease *last_lease;
struct group *group;
};
struct subnet {
struct subnet *next_subnet;
struct subnet *next_sibling;
struct shared_network *shared_network;
struct interface_info *interface;
struct iaddr interface_address;
struct iaddr net;
struct iaddr netmask;
struct group *group;
};
struct class {
char *name;
struct group *group;
};
/* DHCP client lease structure... */
struct client_lease {
struct client_lease *next; /* Next lease in list. */
TIME expiry, renewal, rebind; /* Lease timeouts. */
struct iaddr address; /* Address being leased. */
char *server_name; /* Name of boot server. */
char *filename; /* Name of file we're supposed to boot. */
struct string_list *medium; /* Network medium. */
unsigned int is_static : 1; /* If set, lease is from config file. */
unsigned int is_bootp: 1; /* If set, lease was aquired with BOOTP. */
struct option_data options [256]; /* Options supplied with lease. */
};
/* Possible states in which the client can be. */
enum dhcp_state {
S_REBOOTING,
S_INIT,
S_SELECTING,
S_REQUESTING,
S_BOUND,
S_RENEWING,
S_REBINDING
};
/* Configuration information from the config file... */
struct client_config {
struct option_data defaults [256]; /* Default values for options. */
enum {
ACTION_DEFAULT, /* Use server value if present,
otherwise default. */
ACTION_SUPERSEDE, /* Always use default. */
ACTION_PREPEND, /* Prepend default to server. */
ACTION_APPEND, /* Append default to server. */
} default_actions [256];
struct option_data send_options [256]; /* Send these to server. */
u_int8_t required_options [256]; /* Options server must supply. */
u_int8_t requested_options [256]; /* Options to request from server. */
int requested_option_count; /* Number of requested options. */
TIME timeout; /* Start to panic if we don't get a
lease in this time period when
SELECTING. */
TIME initial_interval; /* All exponential backoff intervals
start here. */
TIME retry_interval; /* If the protocol failed to produce
an address before the timeout,
try the protocol again after this
many seconds. */
TIME select_interval; /* Wait this many seconds from the
first DHCPDISCOVER before
picking an offered lease. */
TIME reboot_timeout; /* When in INIT-REBOOT, wait this
long before giving up and going
to INIT. */
TIME backoff_cutoff; /* When doing exponential backoff,
never back off to an interval
longer than this amount. */
struct string_list *media; /* Possible network media values. */
char *script_name; /* Name of config script. */
enum { IGNORE, ACCEPT, PREFER } bootp_policy;
/* Ignore, accept or prefer BOOTP
responses. */
struct string_list *medium; /* Current network medium. */
struct iaddrlist *reject_list; /* Servers to reject. */
};
/* Per-interface state used in the dhcp client... */
struct client_state {
struct client_lease *active; /* Currently active lease. */
struct client_lease *new; /* New lease. */
struct client_lease *offered_leases; /* Leases offered to us. */
struct client_lease *leases; /* Leases we currently hold. */
struct client_lease *alias; /* Alias lease. */
enum dhcp_state state; /* Current state for this interface. */
struct iaddr destination; /* Where to send packet. */
u_int32_t xid; /* Transaction ID. */
TIME first_sending; /* When was first copy sent? */
TIME interval; /* What's the current resend interval? */
struct string_list *medium; /* Last media type tried. */
struct dhcp_packet packet; /* Outgoing DHCP packet. */
int packet_length; /* Actual length of generated packet. */
struct iaddr requested_address; /* Address we would like to get. */
struct client_config *config; /* Information from config file. */
};
/* Information about each network interface. */
struct interface_info {
struct interface_info *next; /* Next interface in list... */
struct shared_network *shared_network;
/* Networks connected to this interface. */
struct hardware hw_address; /* Its physical address. */
struct in_addr primary_address; /* Primary interface address. */
char name [IFNAMSIZ]; /* Its name... */
int rfdesc; /* Its read file descriptor. */
int wfdesc; /* Its write file descriptor, if
different. */
unsigned char *rbuf; /* Read buffer, if required. */
size_t rbuf_max; /* Size of read buffer. */
size_t rbuf_offset; /* Current offset into buffer. */
size_t rbuf_len; /* Length of data in buffer. */
struct ifreq *ifp; /* Pointer to ifreq struct. */
u_int32_t flags; /* Control flags... */
#define INTERFACE_REQUESTED 1
#define INTERFACE_AUTOMATIC 2
/* Only used by DHCP client code. */
struct client_state *client;
};
struct hardware_link {
struct hardware_link *next;
char name [IFNAMSIZ];
struct hardware address;
};
struct timeout {
struct timeout *next;
TIME when;
void (*func) PROTO ((void *));
void *what;
};
struct protocol {
struct protocol *next;
int fd;
void (*handler) PROTO ((struct protocol *));
void *local;
};
/* Bitmask of dhcp option codes. */
typedef unsigned char option_mask [16];
/* DHCP Option mask manipulation macros... */
#define OPTION_ZERO(mask) (memset (mask, 0, 16))
#define OPTION_SET(mask, bit) (mask [bit >> 8] |= (1 << (bit & 7)))
#define OPTION_CLR(mask, bit) (mask [bit >> 8] &= ~(1 << (bit & 7)))
#define OPTION_ISSET(mask, bit) (mask [bit >> 8] & (1 << (bit & 7)))
#define OPTION_ISCLR(mask, bit) (!OPTION_ISSET (mask, bit))
/* An option occupies its length plus two header bytes (code and
length) for every 255 bytes that must be stored. */
#define OPTION_SPACE(x) ((x) + 2 * ((x) / 255 + 1))
/* Default path to dhcpd config file. */
#ifdef DEBUG
#undef _PATH_DHCPD_CONF
#define _PATH_DHCPD_CONF "dhcpd.conf"
#undef _PATH_DHCPD_DB
#define _PATH_DHCPD_DB "dhcpd.leases"
#else
#ifndef _PATH_DHCPD_CONF
#define _PATH_DHCPD_CONF "/etc/dhcpd.conf"
#endif
#ifndef _PATH_DHCPD_DB
#define _PATH_DHCPD_DB "/etc/dhcpd.leases"
#endif
#ifndef _PATH_DHCPD_PID
#define _PATH_DHCPD_PID "/var/run/dhcpd.pid"
#endif
#endif
#ifndef _PATH_DHCLIENT_CONF
#define _PATH_DHCLIENT_CONF "/etc/dhclient.conf"
#endif
#ifndef _PATH_DHCLIENT_PID
#define _PATH_DHCLIENT_PID "/var/run/dhclient.pid"
#endif
#ifndef _PATH_DHCLIENT_DB
#define _PATH_DHCLIENT_DB "/etc/dhclient.leases"
#endif
#ifndef _PATH_RESOLV_CONF
#define _PATH_RESOLV_CONF "/etc/resolv.conf"
#endif
#ifndef DHCPD_LOG_FACILITY
#define DHCPD_LOG_FACILITY LOG_DAEMON
#endif
#define MAX_TIME 0x7fffffff
#define MIN_TIME 0
/* External definitions... */
/* options.c */
void parse_options PROTO ((struct packet *));
void parse_option_buffer PROTO ((struct packet *, unsigned char *, int));
int cons_options PROTO ((struct packet *, struct dhcp_packet *,
struct tree_cache **, int, int, int));
int store_options PROTO ((unsigned char *, int, struct tree_cache **,
unsigned char *, int, int, int, int));
char *pretty_print_option PROTO ((unsigned int,
unsigned char *, int, int, int));
void do_packet PROTO ((struct interface_info *,
unsigned char *, int,
unsigned short, struct iaddr, struct hardware *));
/* errwarn.c */
extern int warnings_occurred;
void error PROTO ((char *, ...));
int warn PROTO ((char *, ...));
int note PROTO ((char *, ...));
int debug PROTO ((char *, ...));
int parse_warn PROTO ((char *, ...));
/* dhcpd.c */
extern TIME cur_time;
extern struct group root_group;
extern u_int16_t local_port;
extern u_int16_t remote_port;
extern int log_priority;
extern int log_perror;
#ifdef USE_FALLBACK
extern struct interface_info fallback_interface;
#endif
extern char *path_dhcpd_conf;
extern char *path_dhcpd_db;
extern char *path_dhcpd_pid;
int main PROTO ((int, char **, char **));
void cleanup PROTO ((void));
void lease_pinged PROTO ((struct iaddr, u_int8_t *, int));
void lease_ping_timeout PROTO ((void *));
/* conflex.c */
extern int lexline, lexchar;
extern char *token_line, *tlname;
extern char comments [4096];
extern int comment_index;
extern int eol_token;
void new_parse PROTO ((char *));
int next_token PROTO ((char **, FILE *));
int peek_token PROTO ((char **, FILE *));
/* confpars.c */
int readconf PROTO ((void));
void read_leases PROTO ((void));
int parse_statement PROTO ((FILE *,
struct group *, int, struct host_decl *, int));
void parse_allow_deny PROTO ((FILE *, struct group *, int));
void skip_to_semi PROTO ((FILE *));
int parse_boolean PROTO ((FILE *));
int parse_semi PROTO ((FILE *));
int parse_lbrace PROTO ((FILE *));
void parse_host_declaration PROTO ((FILE *, struct group *));
char *parse_host_name PROTO ((FILE *));
void parse_class_declaration PROTO ((FILE *, struct group *, int));
void parse_lease_time PROTO ((FILE *, TIME *));
void parse_shared_net_declaration PROTO ((FILE *, struct group *));
void parse_subnet_declaration PROTO ((FILE *, struct shared_network *));
void parse_group_declaration PROTO ((FILE *, struct group *));
void parse_hardware_param PROTO ((FILE *, struct hardware *));
char *parse_string PROTO ((FILE *));
struct tree *parse_ip_addr_or_hostname PROTO ((FILE *, int));
struct tree_cache *parse_fixed_addr_param PROTO ((FILE *));
void parse_option_param PROTO ((FILE *, struct group *));
TIME parse_timestamp PROTO ((FILE *));
struct lease *parse_lease_declaration PROTO ((FILE *));
void parse_address_range PROTO ((FILE *, struct subnet *));
TIME parse_date PROTO ((FILE *));
unsigned char *parse_numeric_aggregate PROTO ((FILE *,
unsigned char *, int *,
int, int, int));
void convert_num PROTO ((unsigned char *, char *, int, int));
/* tree.c */
pair cons PROTO ((caddr_t, pair));
struct tree_cache *tree_cache PROTO ((struct tree *));
struct tree *tree_host_lookup PROTO ((char *));
struct dns_host_entry *enter_dns_host PROTO ((char *));
struct tree *tree_const PROTO ((unsigned char *, int));
struct tree *tree_concat PROTO ((struct tree *, struct tree *));
struct tree *tree_limit PROTO ((struct tree *, int));
int tree_evaluate PROTO ((struct tree_cache *));
/* dhcp.c */
extern int outstanding_pings;
void dhcp PROTO ((struct packet *));
void dhcpdiscover PROTO ((struct packet *));
void dhcprequest PROTO ((struct packet *));
void dhcprelease PROTO ((struct packet *));
void dhcpdecline PROTO ((struct packet *));
void dhcpinform PROTO ((struct packet *));
void nak_lease PROTO ((struct packet *, struct iaddr *cip));
void ack_lease PROTO ((struct packet *, struct lease *, unsigned char, TIME));
void dhcp_reply PROTO ((struct lease *));
struct lease *find_lease PROTO ((struct packet *,
struct shared_network *, int *));
struct lease *mockup_lease PROTO ((struct packet *,
struct shared_network *,
struct host_decl *));
/* bootp.c */
void bootp PROTO ((struct packet *));
/* memory.c */
void enter_host PROTO ((struct host_decl *));
struct host_decl *find_hosts_by_haddr PROTO ((int, unsigned char *, int));
struct host_decl *find_hosts_by_uid PROTO ((unsigned char *, int));
struct subnet *find_host_for_network PROTO ((struct host_decl **,
struct iaddr *,
struct shared_network *));
void new_address_range PROTO ((struct iaddr, struct iaddr,
struct subnet *, int));
extern struct subnet *find_grouped_subnet PROTO ((struct shared_network *,
struct iaddr));
extern struct subnet *find_subnet PROTO ((struct iaddr));
void enter_shared_network PROTO ((struct shared_network *));
void enter_subnet PROTO ((struct subnet *));
void enter_lease PROTO ((struct lease *));
int supersede_lease PROTO ((struct lease *, struct lease *, int));
void release_lease PROTO ((struct lease *));
void abandon_lease PROTO ((struct lease *, char *));
struct lease *find_lease_by_uid PROTO ((unsigned char *, int));
struct lease *find_lease_by_hw_addr PROTO ((unsigned char *, int));
struct lease *find_lease_by_ip_addr PROTO ((struct iaddr));
void uid_hash_add PROTO ((struct lease *));
void uid_hash_delete PROTO ((struct lease *));
void hw_hash_add PROTO ((struct lease *));
void hw_hash_delete PROTO ((struct lease *));
struct class *add_class PROTO ((int, char *));
struct class *find_class PROTO ((int, char *, int));
struct group *clone_group PROTO ((struct group *, char *));
void write_leases PROTO ((void));
void dump_subnets PROTO ((void));
/* alloc.c */
VOIDPTR dmalloc PROTO ((int, char *));
void dfree PROTO ((VOIDPTR, char *));
struct packet *new_packet PROTO ((char *));
struct dhcp_packet *new_dhcp_packet PROTO ((char *));
struct tree *new_tree PROTO ((char *));
struct tree_cache *new_tree_cache PROTO ((char *));
struct hash_table *new_hash_table PROTO ((int, char *));
struct hash_bucket *new_hash_bucket PROTO ((char *));
struct lease *new_lease PROTO ((char *));
struct lease *new_leases PROTO ((int, char *));
struct subnet *new_subnet PROTO ((char *));
struct class *new_class PROTO ((char *));
struct shared_network *new_shared_network PROTO ((char *));
struct group *new_group PROTO ((char *));
struct protocol *new_protocol PROTO ((char *));
struct lease_state *new_lease_state PROTO ((char *));
struct domain_search_list *new_domain_search_list PROTO ((char *));
struct name_server *new_name_server PROTO ((char *));
void free_name_server PROTO ((struct name_server *, char *));
void free_domain_search_list PROTO ((struct domain_search_list *, char *));
void free_lease_state PROTO ((struct lease_state *, char *));
void free_protocol PROTO ((struct protocol *, char *));
void free_group PROTO ((struct group *, char *));
void free_shared_network PROTO ((struct shared_network *, char *));
void free_class PROTO ((struct class *, char *));
void free_subnet PROTO ((struct subnet *, char *));
void free_lease PROTO ((struct lease *, char *));
void free_hash_bucket PROTO ((struct hash_bucket *, char *));
void free_hash_table PROTO ((struct hash_table *, char *));
void free_tree_cache PROTO ((struct tree_cache *, char *));
void free_packet PROTO ((struct packet *, char *));
void free_dhcp_packet PROTO ((struct dhcp_packet *, char *));
void free_tree PROTO ((struct tree *, char *));
/* print.c */
char *print_hw_addr PROTO ((int, int, unsigned char *));
void print_lease PROTO ((struct lease *));
void dump_raw PROTO ((unsigned char *, int));
void dump_packet PROTO ((struct packet *));
void hash_dump PROTO ((struct hash_table *));
/* socket.c */
#if defined (USE_SOCKET_SEND) || defined (USE_SOCKET_RECEIVE) \
|| defined (USE_SOCKET_FALLBACK)
int if_register_socket PROTO ((struct interface_info *));
#endif
#ifdef USE_SOCKET_FALLBACK
void if_reinitialize_fallback PROTO ((struct interface_info *));
void if_register_fallback PROTO ((struct interface_info *));
ssize_t send_fallback PROTO ((struct interface_info *,
struct packet *, struct dhcp_packet *, size_t,
struct in_addr,
struct sockaddr_in *, struct hardware *));
void fallback_discard PROTO ((struct protocol *));
#endif
#ifdef USE_SOCKET_SEND
void if_reinitialize_send PROTO ((struct interface_info *));
void if_register_send PROTO ((struct interface_info *));
ssize_t send_packet PROTO ((struct interface_info *,
struct packet *, struct dhcp_packet *, size_t,
struct in_addr,
struct sockaddr_in *, struct hardware *));
#endif
#ifdef USE_SOCKET_RECEIVE
void if_reinitialize_receive PROTO ((struct interface_info *));
void if_register_receive PROTO ((struct interface_info *));
ssize_t receive_packet PROTO ((struct interface_info *,
unsigned char *, size_t,
struct sockaddr_in *, struct hardware *));
#endif
#if defined (USE_SOCKET_SEND) && !defined (USE_SOCKET_FALLBACK)
void if_enable PROTO ((struct interface_info *));
#endif
/* bpf.c */
#if defined (USE_BPF_SEND) || defined (USE_BPF_RECEIVE)
int if_register_bpf PROTO ( (struct interface_info *));
#endif
#ifdef USE_BPF_SEND
void if_reinitialize_send PROTO ((struct interface_info *));
void if_register_send PROTO ((struct interface_info *));
ssize_t send_packet PROTO ((struct interface_info *,
struct packet *, struct dhcp_packet *, size_t,
struct in_addr,
struct sockaddr_in *, struct hardware *));
#endif
#ifdef USE_BPF_RECEIVE
void if_reinitialize_receive PROTO ((struct interface_info *));
void if_register_receive PROTO ((struct interface_info *));
ssize_t receive_packet PROTO ((struct interface_info *,
unsigned char *, size_t,
struct sockaddr_in *, struct hardware *));
#endif
#if defined (USE_BPF_SEND)
void if_enable PROTO ((struct interface_info *));
#endif
/* nit.c */
#if defined (USE_NIT_SEND) || defined (USE_NIT_RECEIVE)
int if_register_nit PROTO ( (struct interface_info *));
#endif
#ifdef USE_NIT_SEND
void if_reinitialize_send PROTO ((struct interface_info *));
void if_register_send PROTO ((struct interface_info *));
ssize_t send_packet PROTO ((struct interface_info *,
struct packet *, struct dhcp_packet *, size_t,
struct in_addr,
struct sockaddr_in *, struct hardware *));
#endif
#ifdef USE_NIT_RECEIVE
void if_reinitialize_receive PROTO ((struct interface_info *));
void if_register_receive PROTO ((struct interface_info *));
ssize_t receive_packet PROTO ((struct interface_info *,
unsigned char *, size_t,
struct sockaddr_in *, struct hardware *));
#endif
#if defined (USE_BPF_SEND)
void if_enable PROTO ((struct interface_info *));
#endif
/* raw.c */
#ifdef USE_RAW_SEND
void if_reinitialize_send PROTO ((struct interface_info *));
void if_register_send PROTO ((struct interface_info *));
ssize_t send_packet PROTO ((struct interface_info *,
struct packet *, struct dhcp_packet *, size_t,
struct in_addr,
struct sockaddr_in *, struct hardware *));
#endif
/* dispatch.c */
extern struct interface_info *interfaces, *dummy_interfaces;
extern struct protocol *protocols;
extern int quiet_interface_discovery;
extern void (*bootp_packet_handler) PROTO ((struct interface_info *,
unsigned char *, int, unsigned short,
struct iaddr, struct hardware *));
extern struct timeout *timeouts;
void discover_interfaces PROTO ((int));
void reinitialize_interfaces PROTO ((void));
void dispatch PROTO ((void));
int locate_network PROTO ((struct packet *));
void add_timeout PROTO ((TIME, void (*) PROTO ((void *)), void *));
#if 0
void add_fast_timeout PROTO ((UTIME, void (*) PROTO ((void *)), void *));
#endif
void cancel_timeout PROTO ((void (*) PROTO ((void *)), void *));
void add_protocol PROTO ((char *, int,
void (*) PROTO ((struct protocol *)), void *));
void remove_protocol PROTO ((struct protocol *));
/* hash.c */
struct hash_table *new_hash PROTO ((void));
void add_hash PROTO ((struct hash_table *, char *, int, unsigned char *));
void delete_hash_entry PROTO ((struct hash_table *, char *, int));
unsigned char *hash_lookup PROTO ((struct hash_table *, char *, int));
/* tables.c */
extern struct option dhcp_options [256];
extern unsigned char dhcp_option_default_priority_list [];
extern int sizeof_dhcp_option_default_priority_list;
extern char *hardware_types [256];
extern struct hash_table universe_hash;
extern struct universe dhcp_universe;
void initialize_universes PROTO ((void));
/* convert.c */
u_int32_t getULong PROTO ((unsigned char *));
int32_t getLong PROTO ((unsigned char *));
u_int16_t getUShort PROTO ((unsigned char *));
int16_t getShort PROTO ((unsigned char *));
void putULong PROTO ((unsigned char *, u_int32_t));
void putLong PROTO ((unsigned char *, int32_t));
void putUShort PROTO ((unsigned char *, u_int16_t));
void putShort PROTO ((unsigned char *, int16_t));
/* inet.c */
struct iaddr subnet_number PROTO ((struct iaddr, struct iaddr));
struct iaddr ip_addr PROTO ((struct iaddr, struct iaddr, u_int32_t));
u_int32_t host_addr PROTO ((struct iaddr, struct iaddr));
int addr_eq PROTO ((struct iaddr, struct iaddr));
char *piaddr PROTO ((struct iaddr));
/* dhclient.c */
extern char *path_dhclient_conf;
extern char *path_dhclient_db;
extern char *path_dhclient_pid;
extern int interfaces_requested;
extern struct client_config top_level_config;
void dhcpoffer PROTO ((struct packet *));
void dhcpack PROTO ((struct packet *));
void dhcpnak PROTO ((struct packet *));
void send_discover PROTO ((void *));
void send_request PROTO ((void *));
void send_release PROTO ((void *));
void send_decline PROTO ((void *));
void state_reboot PROTO ((void *));
void state_init PROTO ((void *));
void state_selecting PROTO ((void *));
void state_requesting PROTO ((void *));
void state_bound PROTO ((void *));
void state_panic PROTO ((void *));
void bind_lease PROTO ((struct interface_info *));
void make_discover PROTO ((struct interface_info *, struct client_lease *));
void make_request PROTO ((struct interface_info *, struct client_lease *));
void make_decline PROTO ((struct interface_info *, struct client_lease *));
void make_release PROTO ((struct interface_info *, struct client_lease *));
void free_client_lease PROTO ((struct client_lease *));
void rewrite_client_leases PROTO ((void));
void write_client_lease PROTO ((struct interface_info *,
struct client_lease *));
char *dhcp_option_ev_name PROTO ((struct option *));
void script_init PROTO ((struct interface_info *, char *,
struct string_list *));
void script_write_params PROTO ((struct interface_info *,
char *, struct client_lease *));
int script_go PROTO ((struct interface_info *));
struct client_lease *packet_to_lease PROTO ((struct packet *));
void go_daemon PROTO ((void));
void write_client_pid_file PROTO ((void));
void status_message PROTO ((struct sysconf_header *, void *));
void client_location_changed PROTO ((void));
/* db.c */
int write_lease PROTO ((struct lease *));
int commit_leases PROTO ((void));
void db_startup PROTO ((void));
void new_lease_file PROTO ((void));
/* packet.c */
u_int32_t checksum PROTO ((unsigned char *, int, u_int32_t));
u_int32_t wrapsum PROTO ((u_int32_t));
void assemble_hw_header PROTO ((struct interface_info *, unsigned char *,
int *, struct hardware *));
void assemble_udp_ip_header PROTO ((struct interface_info *, unsigned char *,
int *, u_int32_t, u_int32_t, u_int16_t,
unsigned char *, int));
ssize_t decode_hw_header PROTO ((struct interface_info *, unsigned char *,
int, struct hardware *));
ssize_t decode_udp_ip_header PROTO ((struct interface_info *, unsigned char *,
int, struct sockaddr_in *,
unsigned char *, int));
/* dhxpxlt.c */
void convert_statement PROTO ((FILE *));
void convert_host_statement PROTO ((FILE *, jrefproto));
void convert_host_name PROTO ((FILE *, jrefproto));
void convert_class_statement PROTO ((FILE *, jrefproto, int));
void convert_class_decl PROTO ((FILE *, jrefproto));
void convert_lease_time PROTO ((FILE *, jrefproto, char *));
void convert_shared_net_statement PROTO ((FILE *, jrefproto));
void convert_subnet_statement PROTO ((FILE *, jrefproto));
void convert_subnet_decl PROTO ((FILE *, jrefproto));
void convert_host_decl PROTO ((FILE *, jrefproto));
void convert_hardware_decl PROTO ((FILE *, jrefproto));
void convert_hardware_addr PROTO ((FILE *, jrefproto));
void convert_filename_decl PROTO ((FILE *, jrefproto));
void convert_servername_decl PROTO ((FILE *, jrefproto));
void convert_ip_addr_or_hostname PROTO ((FILE *, jrefproto, int));
void convert_fixed_addr_decl PROTO ((FILE *, jrefproto));
void convert_option_decl PROTO ((FILE *, jrefproto));
void convert_timestamp PROTO ((FILE *, jrefproto));
void convert_lease_statement PROTO ((FILE *, jrefproto));
void convert_address_range PROTO ((FILE *, jrefproto));
void convert_date PROTO ((FILE *, jrefproto, char *));
void convert_numeric_aggregate PROTO ((FILE *, jrefproto, int, int, int, int));
void indent PROTO ((int));
/* route.c */
void add_route_direct PROTO ((struct interface_info *, struct in_addr));
void add_route_net PROTO ((struct interface_info *, struct in_addr,
struct in_addr));
void add_route_default_gateway PROTO ((struct interface_info *,
struct in_addr));
void remove_routes PROTO ((struct in_addr));
void remove_if_route PROTO ((struct interface_info *, struct in_addr));
void remove_all_if_routes PROTO ((struct interface_info *));
void set_netmask PROTO ((struct interface_info *, struct in_addr));
void set_broadcast_addr PROTO ((struct interface_info *, struct in_addr));
void set_ip_address PROTO ((struct interface_info *, struct in_addr));
/* clparse.c */
int read_client_conf PROTO ((void));
void read_client_leases PROTO ((void));
void parse_client_statement PROTO ((FILE *, struct interface_info *,
struct client_config *));
int parse_X PROTO ((FILE *, u_int8_t *, int));
int parse_option_list PROTO ((FILE *, u_int8_t *));
void parse_interface_declaration PROTO ((FILE *, struct client_config *));
struct interface_info *interface_or_dummy PROTO ((char *));
void make_client_state PROTO ((struct interface_info *));
void make_client_config PROTO ((struct interface_info *,
struct client_config *));
void parse_client_lease_statement PROTO ((FILE *, int));
void parse_client_lease_declaration PROTO ((FILE *, struct client_lease *,
struct interface_info **));
struct option *parse_option_decl PROTO ((FILE *, struct option_data *));
void parse_string_list PROTO ((FILE *, struct string_list **, int));
int parse_ip_addr PROTO ((FILE *, struct iaddr *));
void parse_reject_statement PROTO ((FILE *, struct client_config *));
/* dhcrelay.c */
void relay PROTO ((struct interface_info *, u_int8_t *, int,
unsigned short, struct iaddr, struct hardware *));
/* icmp.c */
void icmp_startup PROTO ((int, void (*) PROTO ((struct iaddr,
u_int8_t *, int))));
int icmp_echorequest PROTO ((struct iaddr *));
void icmp_echoreply PROTO ((struct protocol *));
/* dns.c */
void dns_startup PROTO ((void));
int ns_inaddr_lookup PROTO ((u_int16_t, struct iaddr));
void dns_packet PROTO ((struct protocol *));
/* resolv.c */
extern char path_resolv_conf [];
struct name_server *name_servers;
struct domain_search_list *domains;
void read_resolv_conf PROTO ((TIME));
struct sockaddr_in *pick_name_server PROTO ((void));
/* inet_addr.c */
#ifdef NEED_INET_ATON
int inet_aton PROTO ((char *, struct in_addr *));
#endif
/* sysconf.c */
void sysconf_startup PROTO ((void (*) (struct sysconf_header *, void *)));
void sysconf_restart PROTO ((void *));
void sysconf_message PROTO ((struct protocol *proto));
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