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: src/libexec/rbootd/defs.h,v 1.2.6.1 2001/02/18 02:54:11 kris Exp $ 43 * $DragonFly: src/libexec/rbootd/defs.h,v 1.3 2003/11/14 03:54:30 dillon Exp $ 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 256 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 pid_t MyPid; /* this processes' ID */ 130 extern int DebugFlg; /* set true if debugging */ 131 extern int BootAny; /* set true if we can boot anyone */ 132 133 extern char *ConfigFile; /* configuration file */ 134 extern char *DfltConfig; /* default configuration file */ 135 extern char *DbgFile; /* debug output file */ 136 extern char *PidFile; /* file containing pid of server */ 137 extern char *BootDir; /* directory w/boot files */ 138 139 extern FILE *DbgFp; /* debug file pointer */ 140 extern char *IntfName; /* interface we are attached to */ 141 142 extern u_int16_t SessionID; /* generated session ID */ 143 144 extern char *BootFiles[]; /* list of boot files */ 145 146 extern CLIENT *Clients; /* list of addrs we'll accept */ 147 extern RMPCONN *RmpConns; /* list of active connections */ 148 149 extern u_int8_t RmpMcastAddr[]; /* RMP multicast address */ 150 151 void AddConn (RMPCONN *); 152 int BootDone (RMPCONN *); 153 void BpfClose (void); 154 char *BpfGetIntfName (char **); 155 int BpfOpen (void); 156 int BpfRead (RMPCONN *, int); 157 int BpfWrite (RMPCONN *); 158 void DebugOff (int); 159 void DebugOn (int); 160 void DispPkt (RMPCONN *, int); 161 void DoTimeout (void); 162 void DspFlnm (u_int, char *); 163 void Exit (int); 164 CLIENT *FindClient (RMPCONN *); 165 RMPCONN *FindConn (RMPCONN *); 166 void FreeClients (void); 167 void FreeConn (RMPCONN *); 168 void FreeConns (void); 169 int GetBootFiles (void); 170 char *GetEtherAddr (u_int8_t *); 171 CLIENT *NewClient (u_int8_t *); 172 RMPCONN *NewConn (RMPCONN *); 173 char *NewStr (char *); 174 u_int8_t *ParseAddr (char *); 175 int ParseConfig (void); 176 void ProcessPacket (RMPCONN *, CLIENT *); 177 void ReConfig (int); 178 void RemoveConn (RMPCONN *); 179 int SendBootRepl (struct rmp_packet *, RMPCONN *, char *[]); 180 int SendFileNo (struct rmp_packet *, RMPCONN *, char *[]); 181 int SendPacket (RMPCONN *); 182 int SendReadRepl (RMPCONN *); 183 int SendServerID (RMPCONN *); 184