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Diffstat (limited to 'usr.sbin/dhcrelay/dhcpd.h')
| -rw-r--r-- | usr.sbin/dhcrelay/dhcpd.h | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/usr.sbin/dhcrelay/dhcpd.h b/usr.sbin/dhcrelay/dhcpd.h new file mode 100644 index 00000000000..6b305814d71 --- /dev/null +++ b/usr.sbin/dhcrelay/dhcpd.h @@ -0,0 +1,290 @@ +/* $OpenBSD: dhcpd.h,v 1.1 2004/04/12 21:10:28 henning Exp $ */ + +/* + * Copyright (c) 2004 Henning Brauer <henning@openbsd.org> + * Copyright (c) 1995, 1996, 1997, 1998, 1999 + * 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''. + */ + +#include <sys/types.h> + +#include <sys/socket.h> +#include <sys/sockio.h> +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/un.h> +#include <sys/wait.h> + +#include <net/if.h> +#include <net/if_dl.h> +#include <net/route.h> + +#include <netinet/in.h> +#include <arpa/inet.h> + +#include <ctype.h> +#include <errno.h> +#include <fcntl.h> +#include <limits.h> +#include <netdb.h> +#include <paths.h> +#include <unistd.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <syslog.h> +#include <time.h> +#include <unistd.h> + +#include "dhcp.h" +#include "tree.h" + +#define LOCAL_PORT 68 +#define REMOTE_PORT 67 + +struct option_data { + int len; + u_int8_t *data; +}; + +struct string_list { + struct string_list *next; + char *string; +}; + +struct iaddr { + int len; + unsigned char iabuf[16]; +}; + +struct iaddrlist { + struct iaddrlist *next; + struct iaddr addr; +}; + +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; + struct hardware *haddr; + struct option_data options[256]; + int got_requested_address; +}; + +struct hardware { + u_int8_t htype; + u_int8_t hlen; + u_int8_t haddr[16]; +}; + +struct client_lease { + struct client_lease *next; + time_t expiry, renewal, rebind; + struct iaddr address; + char *server_name; + char *filename; + struct string_list *medium; + unsigned int is_static : 1; + unsigned int is_bootp : 1; + struct option_data options[256]; +}; + +/* 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 +}; + +struct client_config { + struct option_data defaults[256]; + enum { + ACTION_DEFAULT, + ACTION_SUPERSEDE, + ACTION_PREPEND, + ACTION_APPEND + } default_actions[256]; + + struct option_data send_options[256]; + u_int8_t required_options[256]; + u_int8_t requested_options[256]; + int requested_option_count; + time_t timeout; + time_t initial_interval; + time_t retry_interval; + time_t select_interval; + time_t reboot_timeout; + time_t backoff_cutoff; + struct string_list *media; + char *script_name; + enum { IGNORE, ACCEPT, PREFER } + bootp_policy; + struct string_list *medium; + struct iaddrlist *reject_list; +}; + +struct client_state { + struct client_lease *active; + struct client_lease *new; + struct client_lease *offered_leases; + struct client_lease *leases; + struct client_lease *alias; + enum dhcp_state state; + struct iaddr destination; + u_int32_t xid; + u_int16_t secs; + time_t first_sending; + time_t interval; + struct string_list *medium; + struct dhcp_packet packet; + int packet_length; + struct iaddr requested_address; + struct client_config *config; + char **scriptEnv; + int scriptEnvsize; + struct string_list *env; + int envc; +}; + +struct interface_info { + struct interface_info *next; + struct hardware hw_address; + struct in_addr primary_address; + char name[IFNAMSIZ]; + int rfdesc; + int wfdesc; + unsigned char *rbuf; + size_t rbuf_max; + size_t rbuf_offset; + size_t rbuf_len; + struct ifreq *ifp; + struct client_state *client; + int noifmedia; + int errors; + int dead; + u_int16_t index; +}; + +struct timeout { + struct timeout *next; + time_t when; + void (*func)(void *); + void *what; +}; + +struct protocol { + struct protocol *next; + int fd; + void (*handler)(struct protocol *); + void *local; +}; + +#define DEFAULT_HASH_SIZE 97 + +struct hash_bucket { + struct hash_bucket *next; + unsigned char *name; + int len; + unsigned char *value; +}; + +struct hash_table { + int hash_count; + struct hash_bucket *buckets[DEFAULT_HASH_SIZE]; +}; + +/* Default path to dhcpd config file. */ +#define DHCPD_LOG_FACILITY LOG_DAEMON + +#define MAX_TIME 0x7fffffff +#define MIN_TIME 0 + +/* External definitions... */ + +/* errwarn.c */ +extern int warnings_occurred; +void error(char *, ...) __attribute__ ((__format__ (__printf__, 1, 2))); +int warn(char *, ...) __attribute__ ((__format__ (__printf__, 1, 2))); +int note(char *, ...) __attribute__ ((__format__ (__printf__, 1, 2))); +int debug(char *, ...) __attribute__ ((__format__ (__printf__, 1, 2))); + +/* bpf.c */ +int if_register_bpf(struct interface_info *); +void if_register_send(struct interface_info *); +void if_register_receive(struct interface_info *); +ssize_t send_packet(struct interface_info *, + struct packet *, struct dhcp_packet *, size_t, struct in_addr, + struct sockaddr_in *, struct hardware *); +ssize_t receive_packet(struct interface_info *, unsigned char *, size_t, + struct sockaddr_in *, struct hardware *); + +/* dispatch.c */ +extern void (*bootp_packet_handler)(struct interface_info *, + struct dhcp_packet *, int, unsigned int, struct iaddr, struct hardware *); +void discover_interfaces(struct interface_info *); +void reinitialize_interfaces(void); +void dispatch(void); +void got_one(struct protocol *); +void add_timeout(time_t, void (*)(void *), void *); +void cancel_timeout(void (*)(void *), void *); +void add_protocol(char *, int, void (*)(struct protocol *), void *); +void remove_protocol(struct protocol *); +int interface_link_status(char *); + +/* packet.c */ +void assemble_hw_header(struct interface_info *, unsigned char *, + int *, struct hardware *); +void assemble_udp_ip_header(struct interface_info *, unsigned char *, + int *, u_int32_t, u_int32_t, unsigned int, unsigned char *, int); +ssize_t decode_hw_header(struct interface_info *, unsigned char *, + int, struct hardware *); +ssize_t decode_udp_ip_header(struct interface_info *, unsigned char *, + int, struct sockaddr_in *, unsigned char *, int); + + +/* crap */ +extern time_t cur_time; +extern int log_priority; +extern int log_perror; |