1/* 2 * Copyright (c) 1988, 1992 The University of Utah and the Center 3 * for Software Science (CSS). 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Center for Software Science of the University of Utah Computer 9 * Science Department. CSS requests users of this software to return 10 * to css-dist@cs.utah.edu any improvements that they make and grant 11 * CSS redistribution rights. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: @(#)defs.h 8.1 (Berkeley) 6/4/93 38 * 39 * From: Utah Hdr: defs.h 3.1 92/07/06 40 * Author: Jeff Forys, University of Utah CSS 41 * 42 * $FreeBSD$ 43 */ 44 45#include "rmp.h" 46#include "rmp_var.h" 47 48/* 49** Common #define's and external variables. All other files should 50** include this. 51*/ 52 53/* 54 * This may be defined in <sys/param.h>, if not, it's defined here. 55 */ 56#ifndef MAXHOSTNAMELEN 57#define MAXHOSTNAMELEN 256 58#endif 59 60/* 61 * SIGUSR1 and SIGUSR2 are defined in <signal.h> for 4.3BSD systems. 62 */ 63#ifndef SIGUSR1 64#define SIGUSR1 SIGEMT 65#endif 66#ifndef SIGUSR2 67#define SIGUSR2 SIGFPE 68#endif 69 70/* 71 * These can be faster & more efficient than strcmp()/strncmp()... 72 */ 73#define STREQN(s1,s2) ((*s1 == *s2) && (strcmp(s1,s2) == 0)) 74#define STRNEQN(s1,s2,n) ((*s1 == *s2) && (strncmp(s1,s2,n) == 0)) 75 76/* 77 * Configuration file limitations. 78 */ 79#define C_MAXFILE 10 /* max number of boot-able files */ 80#define C_LINELEN 1024 /* max length of line */ 81 82/* 83 * Direction of packet (used as argument to DispPkt). 84 */ 85#define DIR_RCVD 0 86#define DIR_SENT 1 87#define DIR_NONE 2 88 89/* 90 * These need not be functions, so... 91 */ 92#define FreeStr(str) free(str) 93#define FreeClient(cli) free(cli) 94#define GenSessID() (++SessionID ? SessionID: ++SessionID) 95 96/* 97 * Converting an Ethernet address to a string is done in many routines. 98 * Using `rmp.hp_hdr.saddr' works because this field is *never* changed; 99 * it will *always* contain the source address of the packet. 100 */ 101#define EnetStr(rptr) GetEtherAddr(&(rptr)->rmp.hp_hdr.saddr[0]) 102 103/* 104 * Every machine we can boot will have one of these allocated for it 105 * (unless there are no restrictions on who we can boot). 106 */ 107typedef struct client_s { 108 u_int8_t addr[RMP_ADDRLEN]; /* addr of machine */ 109 char *files[C_MAXFILE]; /* boot-able files */ 110 struct client_s *next; /* ptr to next */ 111} CLIENT; 112 113/* 114 * Every active connection has one of these allocated for it. 115 */ 116typedef struct rmpconn_s { 117 struct rmp_packet rmp; /* RMP packet */ 118 int rmplen; /* length of packet */ 119 struct timeval tstamp; /* last time active */ 120 int bootfd; /* open boot file */ 121 struct rmpconn_s *next; /* ptr to next */ 122} RMPCONN; 123 124/* 125 * All these variables are defined in "conf.c". 126 */ 127extern char MyHost[]; /* this hosts' name */ 128extern pid_t MyPid; /* this processes' ID */ 129extern int DebugFlg; /* set true if debugging */ 130extern int BootAny; /* set true if we can boot anyone */ 131 132extern char *ConfigFile; /* configuration file */ 133extern char *DfltConfig; /* default configuration file */ 134extern char *DbgFile; /* debug output file */ 135extern char *PidFile; /* file containing pid of server */ 136extern char *BootDir; /* directory w/boot files */ 137 138extern FILE *DbgFp; /* debug file pointer */ 139extern char *IntfName; /* interface we are attached to */ 140 141extern u_int16_t SessionID; /* generated session ID */ 142 143extern char *BootFiles[]; /* list of boot files */ 144 145extern CLIENT *Clients; /* list of addrs we'll accept */ 146extern RMPCONN *RmpConns; /* list of active connections */ 147 148extern u_int8_t RmpMcastAddr[]; /* RMP multicast address */ 149 150void AddConn(RMPCONN *); 151int BootDone(RMPCONN *); 152void BpfClose(void); 153char *BpfGetIntfName(char **); 154int BpfOpen(void); 155int BpfRead(RMPCONN *, int); 156int BpfWrite(RMPCONN *); 157void DebugOff(int); 158void DebugOn(int); 159void DispPkt(RMPCONN *, int); 160void DoTimeout(void); 161void DspFlnm(u_int, char *); 162void Exit(int); 163CLIENT *FindClient(RMPCONN *); 164RMPCONN *FindConn(RMPCONN *); 165void FreeClients(void); 166void FreeConn(RMPCONN *); 167void FreeConns(void); 168int GetBootFiles(void); 169char *GetEtherAddr(u_int8_t *); 170CLIENT *NewClient(u_int8_t *); 171RMPCONN *NewConn(RMPCONN *); 172char *NewStr(char *); 173u_int8_t *ParseAddr(char *); 174int ParseConfig(void); 175void ProcessPacket(RMPCONN *, CLIENT *); 176void ReConfig(int); 177void RemoveConn(RMPCONN *); 178int SendBootRepl(struct rmp_packet *, RMPCONN *, char *[]); 179int SendFileNo(struct rmp_packet *, RMPCONN *, char *[]); 180int SendPacket(RMPCONN *); 181int SendReadRepl(RMPCONN *); 182int SendServerID(RMPCONN *); 183