1 /* $NetBSD: mopd.c,v 1.8 2001/02/19 23:22:45 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1993-96 Mats O Jansson. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Mats O Jansson. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __RCSID("$NetBSD: mopd.c,v 1.8 2001/02/19 23:22:45 cgd Exp $"); 35 #endif 36 37 /* 38 * mopd - MOP Dump/Load Daemon 39 * 40 * Usage: mopd -a [ -d -f -v ] [ -3 | -4 ] 41 * mopd [ -d -f -v ] [ -3 | -4 ] interface 42 */ 43 44 #include "os.h" 45 #include "cmp.h" 46 #include "common.h" 47 #include "device.h" 48 #include "dl.h" 49 #include "get.h" 50 #include "mopdef.h" 51 #include "pf.h" 52 #include "print.h" 53 #include "process.h" 54 #include "rc.h" 55 56 #include <util.h> 57 58 /* 59 * The list of all interfaces that are being listened to. 60 * "selects" on the descriptors in this list. 61 */ 62 struct if_info *iflist; 63 64 void Usage __P((void)); 65 int main __P((int, char **)); 66 void mopProcess __P((struct if_info *, u_char *)); 67 68 int AllFlag = 0; /* listen on "all" interfaces */ 69 int DebugFlag = 0; /* print debugging messages */ 70 int ForegroundFlag = 0; /* run in foreground */ 71 int VersionFlag = 0; /* print version */ 72 int Not3Flag = 0; /* Not MOP V3 messages. */ 73 int Not4Flag = 0; /* Not MOP V4 messages. */ 74 int promisc = 1; /* Need promisc mode */ 75 76 int 77 main(argc, argv) 78 int argc; 79 char **argv; 80 { 81 int c, pid; 82 char *interface; 83 84 extern char version[]; 85 86 while ((c = getopt(argc, argv, "34adfv")) != -1) 87 switch (c) { 88 case '3': 89 Not3Flag++; 90 break; 91 case '4': 92 Not4Flag++; 93 break; 94 case 'a': 95 AllFlag++; 96 break; 97 case 'd': 98 DebugFlag++; 99 break; 100 case 'f': 101 ForegroundFlag++; 102 break; 103 case 'v': 104 VersionFlag++; 105 break; 106 default: 107 Usage(); 108 /* NOTREACHED */ 109 } 110 111 if (VersionFlag) { 112 fprintf(stdout,"%s: version %s\n", getprogname(), version); 113 exit(0); 114 } 115 116 interface = argv[optind++]; 117 118 if ((AllFlag && interface) || 119 (!AllFlag && interface == 0) || 120 (argc > optind) || 121 (Not3Flag && Not4Flag)) 122 Usage(); 123 124 /* All error reporting is done through syslogs. */ 125 openlog("mopd", LOG_PID, LOG_DAEMON); 126 127 if ((!ForegroundFlag) && DebugFlag) 128 fprintf(stdout, 129 "%s: not running as daemon, -d given.\n", getprogname()); 130 131 if ((!ForegroundFlag) && (!DebugFlag)) { 132 pid = fork(); 133 if (pid > 0) 134 /* Parent exits, leaving child in background. */ 135 exit(0); 136 else 137 if (pid == -1) { 138 syslog(LOG_ERR, "cannot fork"); 139 exit(0); 140 } 141 142 /* Fade into the background */ 143 daemon(0, 0); 144 pidfile(NULL); 145 } 146 147 syslog(LOG_INFO, "%s %s started.", getprogname(), version); 148 149 if (AllFlag) 150 deviceInitAll(); 151 else 152 deviceInitOne(interface); 153 154 Loop(); 155 /* NOTREACHED */ 156 return (0); 157 } 158 159 void 160 Usage() 161 { 162 (void) fprintf(stderr, "usage: %s -a [ -d -f -v ] [ -3 | -4 ]\n", 163 getprogname()); 164 (void) fprintf(stderr, " %s [ -d -f -v ] [ -3 | -4 ] interface\n", 165 getprogname()); 166 exit(1); 167 } 168 169 /* 170 * Process incomming packages. 171 */ 172 void 173 mopProcess(ii, pkt) 174 struct if_info *ii; 175 u_char *pkt; 176 { 177 u_char *dst, *src; 178 u_short ptype; 179 int index, trans, len; 180 181 /* We don't known with transport, Guess! */ 182 183 trans = mopGetTrans(pkt, 0); 184 185 /* Ok, return if we don't wan't this message */ 186 187 if ((trans == TRANS_ETHER) && Not3Flag) return; 188 if ((trans == TRANS_8023) && Not4Flag) return; 189 190 index = 0; 191 mopGetHeader(pkt, &index, &dst, &src, &ptype, &len, trans); 192 193 /* 194 * Ignore our own transmissions 195 * 196 */ 197 if (mopCmpEAddr(ii->eaddr,src) == 0) 198 return; 199 200 switch(ptype) { 201 case MOP_K_PROTO_DL: 202 mopProcessDL(stdout, ii, pkt, &index, dst, src, trans, len); 203 break; 204 case MOP_K_PROTO_RC: 205 mopProcessRC(stdout, ii, pkt, &index, dst, src, trans, len); 206 break; 207 default: 208 break; 209 } 210 } 211