1/*	$OpenBSD: defs.h,v 1.10 2015/01/19 07:41:01 deraadt Exp $	*/
2/*	$NetBSD: defs.h,v 1.5 1995/10/06 05:12:14 thorpej Exp $	*/
3
4/*
5 * Copyright (c) 1988, 1992 The University of Utah and the Center
6 *	for Software Science (CSS).
7 * Copyright (c) 1992, 1993
8 *	The Regents of the University of California.  All rights reserved.
9 *
10 * This code is derived from software contributed to Berkeley by
11 * the Center for Software Science of the University of Utah Computer
12 * Science Department.  CSS requests users of this software to return
13 * to css-dist@cs.utah.edu any improvements that they make and grant
14 * CSS redistribution rights.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 * 1. Redistributions of source code must retain the above copyright
20 *    notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 *    notice, this list of conditions and the following disclaimer in the
23 *    documentation and/or other materials provided with the distribution.
24 * 3. Neither the name of the University nor the names of its contributors
25 *    may be used to endorse or promote products derived from this software
26 *    without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 *
40 *	from: @(#)defs.h	8.1 (Berkeley) 6/4/93
41 *
42 * From: Utah Hdr: defs.h 3.1 92/07/06
43 * Author: Jeff Forys, University of Utah CSS
44 */
45
46#include "rmp.h"
47#include "rmp_var.h"
48
49/*
50**  Common #define's and external variables.  All other files should
51**  include this.
52*/
53
54/*
55 *  These can be faster & more efficient than strcmp()/strncmp()...
56 */
57#define	STREQN(s1,s2)		((*s1 == *s2) && (strcmp(s1,s2) == 0))
58#define	STRNEQN(s1,s2,n)	((*s1 == *s2) && (strncmp(s1,s2,n) == 0))
59
60/*
61 *  Configuration file limitations.
62 */
63#define	C_MAXFILE	100		/* max number of bootable files */
64#define	C_LINELEN	1024		/* max length of line */
65
66/*
67 *  Direction of packet (used as argument to DispPkt).
68 */
69#define	DIR_RCVD	0
70#define	DIR_SENT	1
71#define	DIR_NONE	2
72
73/*
74 *  These need not be functions, so...
75 */
76#define	FreeStr(str)	free(str)
77#define	FreeClient(cli)	free(cli)
78#define	GenSessID()	(++SessionID ? SessionID: ++SessionID)
79
80/*
81 *  Converting an Ethernet address to a string is done in many routines.
82 *  Using `rmp.hp_hdr.saddr' works because this field is *never* changed;
83 *  it will *always* contain the source address of the packet.
84 */
85#define	EnetStr(rptr)	GetEtherAddr(&(rptr)->rmp.hp_hdr.saddr[0])
86
87/*
88 *  Every machine we can boot will have one of these allocated for it
89 *  (unless there are no restrictions on who we can boot).
90 */
91typedef struct client_s {
92	u_int8_t		addr[RMP_ADDRLEN];	/* addr of machine */
93	char			*files[C_MAXFILE];	/* bootable files */
94	struct client_s		*next;			/* ptr to next */
95} CLIENT;
96
97/*
98 *  Every active connection has one of these allocated for it.
99 */
100typedef struct rmpconn_s {
101	struct rmp_packet	rmp;			/* RMP packet */
102	int			rmplen;			/* length of packet */
103	struct timeval		tstamp;			/* last time active */
104	int			bootfd;			/* open boot file */
105	struct rmpconn_s	*next;			/* ptr to next */
106} RMPCONN;
107
108/*
109 *  All these variables are defined in "conf.c".
110 */
111extern	char	MyHost[];		/* this hosts' name */
112extern	int	DebugFlg;		/* set true if debugging */
113extern	int	BootAny;		/* set true if we can boot anyone */
114
115extern	char	*ConfigFile;		/* configuration file */
116extern	char	*DfltConfig;		/* default configuration file */
117extern	char	*DbgFile;		/* debug output file */
118extern	char	*BootDir;		/* directory w/boot files */
119
120extern	FILE	*DbgFp;			/* debug file pointer */
121extern	char	*IntfName;		/* interface we are attached to */
122
123extern	u_int16_t SessionID;		/* generated session ID */
124
125extern	char	*BootFiles[];		/* list of boot files */
126
127extern	CLIENT	*Clients;		/* list of addrs we'll accept */
128extern	RMPCONN	*RmpConns;		/* list of active connections */
129
130extern	u_int8_t RmpMcastAddr[];	/* RMP multicast address */
131
132void	 AddConn(RMPCONN *);
133int	 BootDone(RMPCONN *);
134char	*BpfGetIntfName(char **);
135int	 BpfOpen(void);
136int	 BpfRead(RMPCONN *, int);
137int	 BpfWrite(RMPCONN *);
138void	 DispPkt(RMPCONN *, int);
139void	 DoExit(void);
140void	 DspFlnm(u_int, char *);
141RMPCONN	*FindConn(RMPCONN *);
142void	 FreeClients(void);
143void	 FreeConn(RMPCONN *);
144void	 FreeConns(void);
145int	 GetBootFiles(void);
146char	*GetEtherAddr(u_int8_t *);
147CLIENT	*NewClient(u_int8_t *);
148RMPCONN	*NewConn(RMPCONN *);
149char	*NewStr(char *);
150u_int8_t *ParseAddr(char *);
151int	 ParseConfig(void);
152void	 ProcessPacket(RMPCONN *, CLIENT *);
153void	 RemoveConn(RMPCONN *);
154int	 SendBootRepl(struct rmp_packet *, RMPCONN *, char *[]);
155int	 SendFileNo(struct rmp_packet *, RMPCONN *, char *[]);
156int	 SendPacket(RMPCONN *);
157int	 SendReadRepl(RMPCONN *);
158int	 SendServerID(RMPCONN *);
159