* Copyright (c) 1988, 1992 The University of Utah and the Center

/* $NetBSD: defs.h,v 1.13 2025/04/29 15:57:35 tsutsui Exp $ */

/*
* Copyright (c) 1988, 1992 The University of Utah and the Center
* for Software Science (CSS).
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Center for Software Science of the University of Utah Computer
* Science Department. CSS requests users of this software to return
* to [email protected] any improvements that they make and grant
* CSS redistribution rights.
*
* 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 University 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 REGENTS 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 REGENTS 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.
*
* from: @(#)defs.h 8.1 (Berkeley) 6/4/93
*
* From: Utah Hdr: defs.h 3.1 92/07/06
* Author: Jeff Forys, University of Utah CSS
*/

#include "rmp.h"
#include "rmp_var.h"

/*
** Common #define's and external variables. All other files should
** include this.
*/

/*
* This may be defined in <sys/param.h>, if not, it's defined here.
*/
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 64
#endif

/*
* SIGUSR1 and SIGUSR2 are defined in <signal.h> for 4.3BSD systems.
*/
#ifndef SIGUSR1
#define SIGUSR1 SIGEMT
#endif
#ifndef SIGUSR2
#define SIGUSR2 SIGFPE
#endif

/*
* These can be faster & more efficient than strcmp()/strncmp()...
*/
#define STREQN(s1,s2) ((*s1 == *s2) && (strcmp(s1,s2) == 0))
#define STRNEQN(s1,s2,n) ((*s1 == *s2) && (strncmp(s1,s2,n) == 0))

/*
* Configuration file limitations.
*/
#define C_MAXFILE 16 /* max number of boot-able files */
#define C_LINELEN 1024 /* max length of line */

/*
* Direction of packet (used as argument to DispPkt).
*/
#define DIR_RCVD 0
#define DIR_SENT 1
#define DIR_NONE 2

/*
* These need not be functions, so...
*/
#define FreeStr(str) free(str)
#define FreeClient(cli) free(cli)
#define GenSessID() (++SessionID ? SessionID: ++SessionID)

/*
* Converting an Ethernet address to a string is done in many routines.
* Using `rmp.hp_hdr.saddr' works because this field is *never* changed;
* it will *always* contain the source address of the packet.
*/
#define EnetStr(rptr) GetEtherAddr(&(rptr)->rmp.hp_hdr.saddr[0])

/*
* Every machine we can boot will have one of these allocated for it
* (unless there are no restrictions on who we can boot).
*/
typedef struct client_s {
u_int8_t addr[RMP_ADDRLEN]; /* addr of machine */
char *files[C_MAXFILE]; /* boot-able files */
struct client_s *next; /* ptr to next */
} CLIENT;

/*
* Every active connection has one of these allocated for it.
*/
typedef struct rmpconn_s {
struct rmp_packet rmp; /* RMP packet */
int rmplen; /* length of packet */
struct timeval tstamp; /* last time active */
int bootfd; /* open boot file */
struct rmpconn_s *next; /* ptr to next */
} RMPCONN;

/*
* All these variables are defined in "conf.c".
*/
extern char MyHost[MAXHOSTNAMELEN+1]; /* this hosts' name */
extern int DebugFlg; /* set true if debugging */
extern int BootAny; /* set true if we can boot anyone */

extern const char *ConfigFile; /* configuration file */
extern const char *DfltConfig; /* default configuration file */
extern const char *DbgFile; /* debug output file */
extern const char *PidFile; /* file containing pid of server */
extern const char *BootDir; /* directory w/boot files */

extern FILE *DbgFp; /* debug file pointer */
extern char *IntfName; /* interface we are attached to */

extern u_int16_t SessionID; /* generated session ID */

extern char *BootFiles[]; /* list of boot files */

extern CLIENT *Clients; /* list of addrs we'll accept */
extern RMPCONN *RmpConns; /* list of active connections */

extern u_int8_t RmpMcastAddr[]; /* RMP multicast address */

void AddConn(RMPCONN *);
int BootDone(RMPCONN *);
void BpfClose(void);
char *BpfGetIntfName(char **);
int BpfOpen(void);
int BpfRead(RMPCONN *, int);
int BpfWrite(RMPCONN *);
void DebugOff(int);
void DebugOn(int);
void DispPkt(RMPCONN *, int);
void DoTimeout(void);
void DspFlnm(u_int, char *);
void Exit(int) __dead;
CLIENT *FindClient(RMPCONN *);
RMPCONN *FindConn(RMPCONN *);
void FreeClients(void);
void FreeConn(RMPCONN *);
void FreeConns(void);
int GetBootFiles(void);
char *GetEtherAddr(u_int8_t *);
CLIENT *NewClient(u_int8_t *);
RMPCONN *NewConn(RMPCONN *);
char *NewStr(char *);
u_int8_t *ParseAddr(char *);
int ParseConfig(void);
void ProcessPacket(RMPCONN *, CLIENT *);
void ReConfig(int);
void RemoveConn(RMPCONN *);
int SendBootRepl(struct rmp_packet *, RMPCONN *, char *[]);
int SendFileNo(struct rmp_packet *, RMPCONN *, char *[]);
int SendPacket(RMPCONN *);
int SendReadRepl(RMPCONN *);
int SendServerID(RMPCONN *);