187 lines
6.1 KiB
C
187 lines
6.1 KiB
C
/*
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* Copyright (c) 1988, 1992 The University of Utah and the Center
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* for Software Science (CSS).
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Center for Software Science of the University of Utah Computer
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* Science Department. CSS requests users of this software to return
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* to css-dist@cs.utah.edu any improvements that they make and grant
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* CSS redistribution rights.
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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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* 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT 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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* from: @(#)defs.h 8.1 (Berkeley) 6/4/93
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*
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* From: Utah Hdr: defs.h 3.1 92/07/06
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* Author: Jeff Forys, University of Utah CSS
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*
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* $FreeBSD$
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*/
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#include "rmp.h"
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#include "rmp_var.h"
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/*
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** Common #define's and external variables. All other files should
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** include this.
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*/
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/*
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* This may be defined in <sys/param.h>, if not, it's defined here.
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*/
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#ifndef MAXHOSTNAMELEN
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#define MAXHOSTNAMELEN 256
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#endif
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/*
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* SIGUSR1 and SIGUSR2 are defined in <signal.h> for 4.3BSD systems.
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*/
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#ifndef SIGUSR1
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#define SIGUSR1 SIGEMT
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#endif
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#ifndef SIGUSR2
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#define SIGUSR2 SIGFPE
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#endif
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/*
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* These can be faster & more efficient than strcmp()/strncmp()...
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*/
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#define STREQN(s1,s2) ((*s1 == *s2) && (strcmp(s1,s2) == 0))
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#define STRNEQN(s1,s2,n) ((*s1 == *s2) && (strncmp(s1,s2,n) == 0))
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/*
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* Configuration file limitations.
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*/
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#define C_MAXFILE 10 /* max number of boot-able files */
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#define C_LINELEN 1024 /* max length of line */
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/*
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* Direction of packet (used as argument to DispPkt).
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*/
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#define DIR_RCVD 0
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#define DIR_SENT 1
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#define DIR_NONE 2
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/*
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* These need not be functions, so...
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*/
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#define FreeStr(str) free(str)
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#define FreeClient(cli) free(cli)
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#define GenSessID() (++SessionID ? SessionID: ++SessionID)
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/*
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* Converting an Ethernet address to a string is done in many routines.
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* Using `rmp.hp_hdr.saddr' works because this field is *never* changed;
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* it will *always* contain the source address of the packet.
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*/
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#define EnetStr(rptr) GetEtherAddr(&(rptr)->rmp.hp_hdr.saddr[0])
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/*
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* Every machine we can boot will have one of these allocated for it
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* (unless there are no restrictions on who we can boot).
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*/
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typedef struct client_s {
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u_int8_t addr[RMP_ADDRLEN]; /* addr of machine */
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char *files[C_MAXFILE]; /* boot-able files */
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struct client_s *next; /* ptr to next */
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} CLIENT;
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/*
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* Every active connection has one of these allocated for it.
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*/
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typedef struct rmpconn_s {
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struct rmp_packet rmp; /* RMP packet */
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int rmplen; /* length of packet */
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struct timeval tstamp; /* last time active */
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int bootfd; /* open boot file */
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struct rmpconn_s *next; /* ptr to next */
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} RMPCONN;
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/*
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* All these variables are defined in "conf.c".
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*/
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extern char MyHost[]; /* this hosts' name */
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extern pid_t MyPid; /* this processes' ID */
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extern int DebugFlg; /* set true if debugging */
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extern int BootAny; /* set true if we can boot anyone */
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extern char *ConfigFile; /* configuration file */
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extern char *DfltConfig; /* default configuration file */
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extern char *DbgFile; /* debug output file */
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extern char *PidFile; /* file containing pid of server */
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extern char *BootDir; /* directory w/boot files */
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extern FILE *DbgFp; /* debug file pointer */
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extern char *IntfName; /* interface we are attached to */
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extern u_int16_t SessionID; /* generated session ID */
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extern char *BootFiles[]; /* list of boot files */
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extern CLIENT *Clients; /* list of addrs we'll accept */
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extern RMPCONN *RmpConns; /* list of active connections */
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extern u_int8_t RmpMcastAddr[]; /* RMP multicast address */
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void AddConn(RMPCONN *);
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int BootDone(RMPCONN *);
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void BpfClose(void);
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char *BpfGetIntfName(char **);
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int BpfOpen(void);
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int BpfRead(RMPCONN *, int);
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int BpfWrite(RMPCONN *);
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void DebugOff(int);
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void DebugOn(int);
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void DispPkt(RMPCONN *, int);
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void DoTimeout(void);
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void DspFlnm(u_int, char *);
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void Exit(int);
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CLIENT *FindClient(RMPCONN *);
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RMPCONN *FindConn(RMPCONN *);
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void FreeClients(void);
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void FreeConn(RMPCONN *);
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void FreeConns(void);
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int GetBootFiles(void);
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char *GetEtherAddr(u_int8_t *);
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CLIENT *NewClient(u_int8_t *);
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RMPCONN *NewConn(RMPCONN *);
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char *NewStr(char *);
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u_int8_t *ParseAddr(char *);
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int ParseConfig(void);
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void ProcessPacket(RMPCONN *, CLIENT *);
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void ReConfig(int);
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void RemoveConn(RMPCONN *);
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int SendBootRepl(struct rmp_packet *, RMPCONN *, char *[]);
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int SendFileNo(struct rmp_packet *, RMPCONN *, char *[]);
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int SendPacket(RMPCONN *);
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int SendReadRepl(RMPCONN *);
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int SendServerID(RMPCONN *);
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