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https://git.rtems.org/rtems-libbsd/
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dhclient: New files
This commit is contained in:
Joel Sherrill
440
freebsd-userspace/commands/sbin/dhclient/dhcpd.h
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440
freebsd-userspace/commands/sbin/dhclient/dhcpd.h
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@@ -0,0 +1,440 @@
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/* $OpenBSD: dhcpd.h,v 1.33 2004/05/06 22:29:15 deraadt Exp $ */
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/*
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* Copyright (c) 2004 Henning Brauer <henning@openbsd.org>
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* Copyright (c) 1995, 1996, 1997, 1998, 1999
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* The Internet Software Consortium. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of The Internet Software Consortium nor the names
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* of its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
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* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This software has been written for the Internet Software Consortium
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* by Ted Lemon <mellon@fugue.com> in cooperation with Vixie
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* Enterprises. To learn more about the Internet Software Consortium,
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* see ``http://www.vix.com/isc''. To learn more about Vixie
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* Enterprises, see ``http://www.vix.com''.
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/un.h>
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#include <sys/wait.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <netdb.h>
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#include <paths.h>
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#include <unistd.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <time.h>
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#include <unistd.h>
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#include "dhcp.h"
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#include "tree.h"
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#define LOCAL_PORT 68
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#define REMOTE_PORT 67
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struct option_data {
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int len;
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u_int8_t *data;
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};
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struct string_list {
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struct string_list *next;
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char *string;
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};
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struct iaddr {
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int len;
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unsigned char iabuf[16];
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};
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struct iaddrlist {
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struct iaddrlist *next;
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struct iaddr addr;
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};
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struct packet {
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struct dhcp_packet *raw;
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int packet_length;
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int packet_type;
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int options_valid;
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int client_port;
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struct iaddr client_addr;
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struct interface_info *interface;
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struct hardware *haddr;
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struct option_data options[256];
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};
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struct hardware {
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u_int8_t htype;
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u_int8_t hlen;
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u_int8_t haddr[16];
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};
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struct client_lease {
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struct client_lease *next;
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time_t expiry, renewal, rebind;
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struct iaddr address;
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char *server_name;
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char *filename;
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struct string_list *medium;
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unsigned int is_static : 1;
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unsigned int is_bootp : 1;
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struct option_data options[256];
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};
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/* Possible states in which the client can be. */
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enum dhcp_state {
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S_REBOOTING,
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S_INIT,
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S_SELECTING,
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S_REQUESTING,
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S_BOUND,
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S_RENEWING,
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S_REBINDING
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};
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struct client_config {
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struct option_data defaults[256];
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enum {
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ACTION_DEFAULT,
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ACTION_SUPERSEDE,
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ACTION_PREPEND,
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ACTION_APPEND
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} default_actions[256];
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struct option_data send_options[256];
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u_int8_t required_options[256];
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u_int8_t requested_options[256];
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int requested_option_count;
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time_t timeout;
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time_t initial_interval;
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time_t retry_interval;
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time_t select_interval;
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time_t reboot_timeout;
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time_t backoff_cutoff;
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struct string_list *media;
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char *script_name;
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enum { IGNORE, ACCEPT, PREFER }
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bootp_policy;
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struct string_list *medium;
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struct iaddrlist *reject_list;
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};
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struct client_state {
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struct client_lease *active;
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struct client_lease *new;
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struct client_lease *offered_leases;
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struct client_lease *leases;
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struct client_lease *alias;
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enum dhcp_state state;
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struct iaddr destination;
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u_int32_t xid;
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u_int16_t secs;
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time_t first_sending;
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time_t interval;
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struct string_list *medium;
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struct dhcp_packet packet;
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int packet_length;
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struct iaddr requested_address;
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struct client_config *config;
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char **scriptEnv;
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int scriptEnvsize;
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struct string_list *env;
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int envc;
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};
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struct interface_info {
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struct interface_info *next;
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struct hardware hw_address;
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struct in_addr primary_address;
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char name[IFNAMSIZ];
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int rfdesc;
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int wfdesc;
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int ufdesc;
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unsigned char *rbuf;
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size_t rbuf_max;
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size_t rbuf_offset;
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size_t rbuf_len;
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struct ifreq *ifp;
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struct client_state *client;
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int noifmedia;
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int errors;
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int dead;
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u_int16_t index;
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};
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struct timeout {
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struct timeout *next;
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time_t when;
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void (*func)(void *);
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void *what;
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};
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struct protocol {
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struct protocol *next;
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int fd;
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void (*handler)(struct protocol *);
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void *local;
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};
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#define DEFAULT_HASH_SIZE 97
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struct hash_bucket {
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struct hash_bucket *next;
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unsigned char *name;
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int len;
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unsigned char *value;
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};
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struct hash_table {
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int hash_count;
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struct hash_bucket *buckets[DEFAULT_HASH_SIZE];
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};
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/* Default path to dhcpd config file. */
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#define _PATH_DHCLIENT_CONF "/etc/dhclient.conf"
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#define _PATH_DHCLIENT_DB "/var/db/dhclient.leases"
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#define DHCPD_LOG_FACILITY LOG_DAEMON
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#define MAX_TIME 0x7fffffff
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#define MIN_TIME 0
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/* External definitions... */
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/* options.c */
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int cons_options(struct packet *, struct dhcp_packet *, int,
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struct tree_cache **, int, int, int, u_int8_t *, int);
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char *pretty_print_option(unsigned int,
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unsigned char *, int, int, int);
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void do_packet(struct interface_info *, struct dhcp_packet *,
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int, unsigned int, struct iaddr, struct hardware *);
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/* errwarn.c */
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extern int warnings_occurred;
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void error(char *, ...) __attribute__ ((__format__ (__printf__, 1, 2)));
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int warning(char *, ...) __attribute__ ((__format__ (__printf__, 1, 2)));
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int note(char *, ...) __attribute__ ((__format__ (__printf__, 1, 2)));
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int debug(char *, ...) __attribute__ ((__format__ (__printf__, 1, 2)));
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int parse_warn(char *, ...) __attribute__ ((__format__ (__printf__, 1, 2)));
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/* conflex.c */
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extern int lexline, lexchar;
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extern char *token_line, *tlname;
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extern char comments[4096];
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extern int comment_index;
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extern int eol_token;
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void new_parse(char *);
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int next_token(char **, FILE *);
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int peek_token(char **, FILE *);
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/* parse.c */
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void skip_to_semi(FILE *);
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int parse_semi(FILE *);
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char *parse_string(FILE *);
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int parse_ip_addr(FILE *, struct iaddr *);
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void parse_hardware_param(FILE *, struct hardware *);
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void parse_lease_time(FILE *, time_t *);
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unsigned char *parse_numeric_aggregate(FILE *, unsigned char *, int *,
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int, int, int);
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void convert_num(unsigned char *, char *, int, int);
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time_t parse_date(FILE *);
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/* tree.c */
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pair cons(caddr_t, pair);
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/* alloc.c */
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struct string_list *new_string_list(size_t size);
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struct hash_table *new_hash_table(int);
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struct hash_bucket *new_hash_bucket(void);
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/* bpf.c */
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int if_register_bpf(struct interface_info *);
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void if_register_send(struct interface_info *);
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void if_register_receive(struct interface_info *);
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ssize_t send_packet(struct interface_info *, struct dhcp_packet *, size_t,
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struct in_addr, struct sockaddr_in *, struct hardware *);
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ssize_t receive_packet(struct interface_info *, unsigned char *, size_t,
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struct sockaddr_in *, struct hardware *);
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/* dispatch.c */
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extern void (*bootp_packet_handler)(struct interface_info *,
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struct dhcp_packet *, int, unsigned int, struct iaddr, struct hardware *);
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void discover_interfaces(struct interface_info *);
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void reinitialize_interfaces(void);
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void dispatch(void);
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void got_one(struct protocol *);
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void add_timeout(time_t, void (*)(void *), void *);
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void cancel_timeout(void (*)(void *), void *);
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void add_protocol(char *, int, void (*)(struct protocol *), void *);
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void remove_protocol(struct protocol *);
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int interface_link_status(char *);
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/* hash.c */
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struct hash_table *new_hash(void);
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void add_hash(struct hash_table *, unsigned char *, int, unsigned char *);
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unsigned char *hash_lookup(struct hash_table *, unsigned char *, int);
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/* tables.c */
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extern struct option dhcp_options[256];
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extern unsigned char dhcp_option_default_priority_list[];
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extern int sizeof_dhcp_option_default_priority_list;
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extern struct hash_table universe_hash;
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extern struct universe dhcp_universe;
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void initialize_universes(void);
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/* convert.c */
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u_int32_t getULong(unsigned char *);
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int32_t getLong(unsigned char *);
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u_int16_t getUShort(unsigned char *);
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int16_t getShort(unsigned char *);
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void putULong(unsigned char *, u_int32_t);
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void putLong(unsigned char *, int32_t);
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void putUShort(unsigned char *, unsigned int);
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void putShort(unsigned char *, int);
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/* inet.c */
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struct iaddr subnet_number(struct iaddr, struct iaddr);
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struct iaddr broadcast_addr(struct iaddr, struct iaddr);
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int addr_eq(struct iaddr, struct iaddr);
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char *piaddr(struct iaddr);
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/* dhclient.c */
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extern char *path_dhclient_conf;
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extern char *path_dhclient_db;
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extern time_t cur_time;
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extern int log_priority;
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extern int log_perror;
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extern struct client_config top_level_config;
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void dhcpoffer(struct packet *);
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void dhcpack(struct packet *);
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void dhcpnak(struct packet *);
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void send_discover(void *);
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void send_request(void *);
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void send_decline(void *);
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void state_reboot(void *);
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void state_init(void *);
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void state_selecting(void *);
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void state_requesting(void *);
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void state_bound(void *);
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void state_panic(void *);
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void bind_lease(struct interface_info *);
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void make_discover(struct interface_info *, struct client_lease *);
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void make_request(struct interface_info *, struct client_lease *);
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void make_decline(struct interface_info *, struct client_lease *);
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void free_client_lease(struct client_lease *);
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void rewrite_client_leases(void);
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void write_client_lease(struct interface_info *, struct client_lease *, int);
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void priv_script_init(char *, char *);
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void priv_script_write_params(char *, struct client_lease *);
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int priv_script_go(void);
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void script_init(char *, struct string_list *);
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void script_write_params(char *, struct client_lease *);
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int script_go(void);
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void client_envadd(struct client_state *,
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const char *, const char *, const char *, ...);
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void script_set_env(struct client_state *, const char *, const char *,
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const char *);
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void script_flush_env(struct client_state *);
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int dhcp_option_ev_name(char *, size_t, struct option *);
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struct client_lease *packet_to_lease(struct packet *);
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void go_daemon(void);
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void client_location_changed(void);
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void bootp(struct packet *);
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void dhcp(struct packet *);
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/* packet.c */
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void assemble_hw_header(struct interface_info *, unsigned char *,
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int *, struct hardware *);
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void assemble_udp_ip_header(unsigned char *, int *, u_int32_t, u_int32_t,
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unsigned int, unsigned char *, int);
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ssize_t decode_hw_header(unsigned char *, int, struct hardware *);
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ssize_t decode_udp_ip_header(unsigned char *, int, struct sockaddr_in *,
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unsigned char *, int);
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/* ethernet.c */
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void assemble_ethernet_header(struct interface_info *, unsigned char *,
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int *, struct hardware *);
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ssize_t decode_ethernet_header(struct interface_info *, unsigned char *,
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int, struct hardware *);
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/* clparse.c */
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int read_client_conf(void);
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void read_client_leases(void);
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void parse_client_statement(FILE *, struct interface_info *,
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struct client_config *);
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int parse_X(FILE *, u_int8_t *, int);
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int parse_option_list(FILE *, u_int8_t *);
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void parse_interface_declaration(FILE *, struct client_config *);
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struct interface_info *interface_or_dummy(char *);
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void make_client_state(struct interface_info *);
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void make_client_config(struct interface_info *, struct client_config *);
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void parse_client_lease_statement(FILE *, int);
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void parse_client_lease_declaration(FILE *, struct client_lease *,
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struct interface_info **);
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struct option *parse_option_decl(FILE *, struct option_data *);
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void parse_string_list(FILE *, struct string_list **, int);
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void parse_reject_statement(FILE *, struct client_config *);
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/* privsep.c */
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struct buf *buf_open(size_t);
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int buf_add(struct buf *, void *, size_t);
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int buf_close(int, struct buf *);
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ssize_t buf_read(int, void *, size_t);
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void dispatch_imsg(int);
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