1 /* $NetBSD: map.c,v 1.5 1996/11/15 05:52:42 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)map.c 8.1 (Berkeley) 6/9/93"; 39 #endif 40 static char rcsid[] = "$NetBSD: map.c,v 1.5 1996/11/15 05:52:42 lukem Exp $"; 41 #endif /* not lint */ 42 43 #include <sys/types.h> 44 #include <termios.h> 45 #include <errno.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include "extern.h" 49 50 int baudrate __P((char *)); 51 52 /* Baud rate conditionals for mapping. */ 53 #define GT 0x01 54 #define EQ 0x02 55 #define LT 0x04 56 #define NOT 0x08 57 #define GE (GT | EQ) 58 #define LE (LT | EQ) 59 60 typedef struct map { 61 struct map *next; /* Linked list of maps. */ 62 char *porttype; /* Port type, or "" for any. */ 63 char *type; /* Terminal type to select. */ 64 int conditional; /* Baud rate conditionals bitmask. */ 65 int speed; /* Baud rate to compare against. */ 66 } MAP; 67 68 MAP *cur, *maplist; 69 70 /* 71 * Syntax for -m: 72 * [port-type][test baudrate]:terminal-type 73 * The baud rate tests are: >, <, @, =, ! 74 */ 75 void 76 add_mapping(port, arg) 77 char *port, *arg; 78 { 79 MAP *mapp; 80 char *copy, *p, *termp; 81 82 copy = strdup(arg); 83 mapp = malloc((u_int)sizeof(MAP)); 84 if (copy == NULL || mapp == NULL) 85 err("%s", strerror(errno)); 86 mapp->next = NULL; 87 if (maplist == NULL) 88 cur = maplist = mapp; 89 else { 90 cur->next = mapp; 91 cur = mapp; 92 } 93 94 mapp->porttype = arg; 95 mapp->conditional = 0; 96 97 arg = strpbrk(arg, "><@=!:"); 98 99 if (arg == NULL) { /* [?]term */ 100 mapp->type = mapp->porttype; 101 mapp->porttype = NULL; 102 goto done; 103 } 104 105 if (arg == mapp->porttype) /* [><@=! baud]:term */ 106 termp = mapp->porttype = NULL; 107 else 108 termp = arg; 109 110 for (;; ++arg) /* Optional conditionals. */ 111 switch(*arg) { 112 case '<': 113 if (mapp->conditional & GT) 114 goto badmopt; 115 mapp->conditional |= LT; 116 break; 117 case '>': 118 if (mapp->conditional & LT) 119 goto badmopt; 120 mapp->conditional |= GT; 121 break; 122 case '@': 123 case '=': /* Not documented. */ 124 mapp->conditional |= EQ; 125 break; 126 case '!': 127 mapp->conditional |= NOT; 128 break; 129 default: 130 goto next; 131 } 132 133 next: if (*arg == ':') { 134 if (mapp->conditional) 135 goto badmopt; 136 ++arg; 137 } else { /* Optional baudrate. */ 138 arg = strchr(p = arg, ':'); 139 if (arg == NULL) 140 goto badmopt; 141 *arg++ = '\0'; 142 mapp->speed = baudrate(p); 143 } 144 145 if (*arg == NULL) /* Non-optional type. */ 146 goto badmopt; 147 148 mapp->type = arg; 149 150 /* Terminate porttype, if specified. */ 151 if (termp != NULL) 152 *termp = '\0'; 153 154 /* If a NOT conditional, reverse the test. */ 155 if (mapp->conditional & NOT) 156 mapp->conditional = ~mapp->conditional & (EQ | GT | LT); 157 158 /* If user specified a port with an option flag, set it. */ 159 done: if (port) { 160 if (mapp->porttype) 161 badmopt: err("illegal -m option format: %s", copy); 162 mapp->porttype = port; 163 } 164 165 #ifdef MAPDEBUG 166 (void)printf("port: %s\n", mapp->porttype ? mapp->porttype : "ANY"); 167 (void)printf("type: %s\n", mapp->type); 168 (void)printf("conditional: "); 169 p = ""; 170 if (mapp->conditional & GT) { 171 (void)printf("GT"); 172 p = "/"; 173 } 174 if (mapp->conditional & EQ) { 175 (void)printf("%sEQ", p); 176 p = "/"; 177 } 178 if (mapp->conditional & LT) 179 (void)printf("%sLT", p); 180 (void)printf("\nspeed: %d\n", mapp->speed); 181 #endif 182 } 183 184 /* 185 * Return the type of terminal to use for a port of type 'type', as specified 186 * by the first applicable mapping in 'map'. If no mappings apply, return 187 * 'type'. 188 */ 189 char * 190 mapped(type) 191 char *type; 192 { 193 MAP *mapp; 194 int match; 195 196 for (mapp = maplist; mapp; mapp = mapp->next) 197 if (mapp->porttype == NULL || !strcmp(mapp->porttype, type)) { 198 switch (mapp->conditional) { 199 case 0: /* No test specified. */ 200 match = 1; 201 break; 202 case EQ: 203 match = (ospeed == mapp->speed); 204 break; 205 case GE: 206 match = (ospeed >= mapp->speed); 207 break; 208 case GT: 209 match = (ospeed > mapp->speed); 210 break; 211 case LE: 212 match = (ospeed <= mapp->speed); 213 break; 214 case LT: 215 match = (ospeed < mapp->speed); 216 break; 217 } 218 if (match) 219 return (mapp->type); 220 } 221 /* No match found; return given type. */ 222 return (type); 223 } 224 225 int 226 baudrate(rate) 227 char *rate; 228 { 229 230 /* The baudrate number can be preceded by a 'B', which is ignored. */ 231 if (*rate == 'B') 232 ++rate; 233 234 return (atoi(rate)); 235 } 236