1 /* $OpenBSD: defs.h,v 1.6 2003/06/02 23:36:54 millert 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 * This may be defined in <sys/param.h>, if not, it's defined here. 56 */ 57 #ifndef MAXHOSTNAMELEN 58 #define MAXHOSTNAMELEN 64 59 #endif 60 61 /* 62 * SIGUSR1 and SIGUSR2 are defined in <signal.h> for 4.3BSD systems. 63 */ 64 #ifndef SIGUSR1 65 #define SIGUSR1 SIGEMT 66 #endif 67 #ifndef SIGUSR2 68 #define SIGUSR2 SIGFPE 69 #endif 70 71 /* 72 * These can be faster & more efficient than strcmp()/strncmp()... 73 */ 74 #define STREQN(s1,s2) ((*s1 == *s2) && (strcmp(s1,s2) == 0)) 75 #define STRNEQN(s1,s2,n) ((*s1 == *s2) && (strncmp(s1,s2,n) == 0)) 76 77 /* 78 * Configuration file limitations. 79 */ 80 #define C_MAXFILE 10 /* max number of boot-able files */ 81 #define C_LINELEN 1024 /* max length of line */ 82 83 /* 84 * Direction of packet (used as argument to DispPkt). 85 */ 86 #define DIR_RCVD 0 87 #define DIR_SENT 1 88 #define DIR_NONE 2 89 90 /* 91 * These need not be functions, so... 92 */ 93 #define FreeStr(str) free(str) 94 #define FreeClient(cli) free(cli) 95 #define GenSessID() (++SessionID ? SessionID: ++SessionID) 96 97 /* 98 * Converting an Ethernet address to a string is done in many routines. 99 * Using `rmp.hp_hdr.saddr' works because this field is *never* changed; 100 * it will *always* contain the source address of the packet. 101 */ 102 #define EnetStr(rptr) GetEtherAddr(&(rptr)->rmp.hp_hdr.saddr[0]) 103 104 /* 105 * Every machine we can boot will have one of these allocated for it 106 * (unless there are no restrictions on who we can boot). 107 */ 108 typedef struct client_s { 109 u_int8_t addr[RMP_ADDRLEN]; /* addr of machine */ 110 char *files[C_MAXFILE]; /* boot-able files */ 111 struct client_s *next; /* ptr to next */ 112 } CLIENT; 113 114 /* 115 * Every active connection has one of these allocated for it. 116 */ 117 typedef struct rmpconn_s { 118 struct rmp_packet rmp; /* RMP packet */ 119 int rmplen; /* length of packet */ 120 struct timeval tstamp; /* last time active */ 121 int bootfd; /* open boot file */ 122 struct rmpconn_s *next; /* ptr to next */ 123 } RMPCONN; 124 125 /* 126 * All these variables are defined in "conf.c". 127 */ 128 extern char MyHost[]; /* this hosts' name */ 129 extern int DebugFlg; /* set true if debugging */ 130 extern int BootAny; /* set true if we can boot anyone */ 131 132 extern char *ConfigFile; /* configuration file */ 133 extern char *DfltConfig; /* default configuration file */ 134 extern char *DbgFile; /* debug output file */ 135 extern char *BootDir; /* directory w/boot files */ 136 137 extern FILE *DbgFp; /* debug file pointer */ 138 extern char *IntfName; /* interface we are attached to */ 139 140 extern u_int16_t SessionID; /* generated session ID */ 141 142 extern char *BootFiles[]; /* list of boot files */ 143 144 extern CLIENT *Clients; /* list of addrs we'll accept */ 145 extern RMPCONN *RmpConns; /* list of active connections */ 146 147 extern u_int8_t RmpMcastAddr[]; /* RMP multicast address */ 148 149 void AddConn(RMPCONN *); 150 int BootDone(RMPCONN *); 151 char *BpfGetIntfName(char **); 152 int BpfOpen(void); 153 int BpfRead(RMPCONN *, int); 154 int BpfWrite(RMPCONN *); 155 void DispPkt(RMPCONN *, int); 156 void DoExit(void); 157 void DspFlnm(u_int, char *); 158 RMPCONN *FindConn(RMPCONN *); 159 void FreeClients(void); 160 void FreeConn(RMPCONN *); 161 void FreeConns(void); 162 int GetBootFiles(void); 163 char *GetEtherAddr(u_int8_t *); 164 CLIENT *NewClient(u_int8_t *); 165 RMPCONN *NewConn(RMPCONN *); 166 char *NewStr(char *); 167 u_int8_t *ParseAddr(char *); 168 int ParseConfig(void); 169 void ProcessPacket(RMPCONN *, CLIENT *); 170 void RemoveConn(RMPCONN *); 171 int SendBootRepl(struct rmp_packet *, RMPCONN *, char *[]); 172 int SendFileNo(struct rmp_packet *, RMPCONN *, char *[]); 173 int SendPacket(RMPCONN *); 174 int SendReadRepl(RMPCONN *); 175 int SendServerID(RMPCONN *); 176