1 /* $NetBSD: map.c,v 1.8 1997/10/20 01:07:51 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 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)map.c 8.1 (Berkeley) 6/9/93"; 40 #endif 41 __RCSID("$NetBSD: map.c,v 1.8 1997/10/20 01:07:51 lukem Exp $"); 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 #include <err.h> 46 #include <errno.h> 47 #include <stdlib.h> 48 #include <string.h> 49 #include <termios.h> 50 #include "extern.h" 51 52 int baudrate __P((char *)); 53 54 /* Baud rate conditionals for mapping. */ 55 #define GT 0x01 56 #define EQ 0x02 57 #define LT 0x04 58 #define NOT 0x08 59 #define GE (GT | EQ) 60 #define LE (LT | EQ) 61 62 typedef struct map { 63 struct map *next; /* Linked list of maps. */ 64 char *porttype; /* Port type, or "" for any. */ 65 char *type; /* Terminal type to select. */ 66 int conditional; /* Baud rate conditionals bitmask. */ 67 int speed; /* Baud rate to compare against. */ 68 } MAP; 69 70 MAP *cur, *maplist; 71 72 /* 73 * Syntax for -m: 74 * [port-type][test baudrate]:terminal-type 75 * The baud rate tests are: >, <, @, =, ! 76 */ 77 void 78 add_mapping(port, arg) 79 char *port, *arg; 80 { 81 MAP *mapp; 82 char *copy, *p, *termp; 83 84 copy = strdup(arg); 85 mapp = malloc((u_int)sizeof(MAP)); 86 if (copy == NULL || mapp == NULL) 87 err(1, "malloc"); 88 mapp->next = NULL; 89 if (maplist == NULL) 90 cur = maplist = mapp; 91 else { 92 cur->next = mapp; 93 cur = mapp; 94 } 95 96 mapp->porttype = arg; 97 mapp->conditional = 0; 98 99 arg = strpbrk(arg, "><@=!:"); 100 101 if (arg == NULL) { /* [?]term */ 102 mapp->type = mapp->porttype; 103 mapp->porttype = NULL; 104 goto done; 105 } 106 107 if (arg == mapp->porttype) /* [><@=! baud]:term */ 108 termp = mapp->porttype = NULL; 109 else 110 termp = arg; 111 112 for (;; ++arg) /* Optional conditionals. */ 113 switch(*arg) { 114 case '<': 115 if (mapp->conditional & GT) 116 goto badmopt; 117 mapp->conditional |= LT; 118 break; 119 case '>': 120 if (mapp->conditional & LT) 121 goto badmopt; 122 mapp->conditional |= GT; 123 break; 124 case '@': 125 case '=': /* Not documented. */ 126 mapp->conditional |= EQ; 127 break; 128 case '!': 129 mapp->conditional |= NOT; 130 break; 131 default: 132 goto next; 133 } 134 135 next: if (*arg == ':') { 136 if (mapp->conditional) 137 goto badmopt; 138 ++arg; 139 } else { /* Optional baudrate. */ 140 arg = strchr(p = arg, ':'); 141 if (arg == NULL) 142 goto badmopt; 143 *arg++ = '\0'; 144 mapp->speed = baudrate(p); 145 } 146 147 if (*arg == '\0') /* Non-optional type. */ 148 goto badmopt; 149 150 mapp->type = arg; 151 152 /* Terminate porttype, if specified. */ 153 if (termp != NULL) 154 *termp = '\0'; 155 156 /* If a NOT conditional, reverse the test. */ 157 if (mapp->conditional & NOT) 158 mapp->conditional = ~mapp->conditional & (EQ | GT | LT); 159 160 /* If user specified a port with an option flag, set it. */ 161 done: if (port) { 162 if (mapp->porttype) 163 badmopt: errx(1, "illegal -m option format: %s", copy); 164 mapp->porttype = port; 165 } 166 167 #ifdef MAPDEBUG 168 (void)printf("port: %s\n", mapp->porttype ? mapp->porttype : "ANY"); 169 (void)printf("type: %s\n", mapp->type); 170 (void)printf("conditional: "); 171 p = ""; 172 if (mapp->conditional & GT) { 173 (void)printf("GT"); 174 p = "/"; 175 } 176 if (mapp->conditional & EQ) { 177 (void)printf("%sEQ", p); 178 p = "/"; 179 } 180 if (mapp->conditional & LT) 181 (void)printf("%sLT", p); 182 (void)printf("\nspeed: %d\n", mapp->speed); 183 #endif 184 } 185 186 /* 187 * Return the type of terminal to use for a port of type 'type', as specified 188 * by the first applicable mapping in 'map'. If no mappings apply, return 189 * 'type'. 190 */ 191 char * 192 mapped(type) 193 char *type; 194 { 195 MAP *mapp; 196 int match; 197 198 match = 0; 199 for (mapp = maplist; mapp; mapp = mapp->next) 200 if (mapp->porttype == NULL || !strcmp(mapp->porttype, type)) { 201 switch (mapp->conditional) { 202 case 0: /* No test specified. */ 203 match = 1; 204 break; 205 case EQ: 206 match = (ospeed == mapp->speed); 207 break; 208 case GE: 209 match = (ospeed >= mapp->speed); 210 break; 211 case GT: 212 match = (ospeed > mapp->speed); 213 break; 214 case LE: 215 match = (ospeed <= mapp->speed); 216 break; 217 case LT: 218 match = (ospeed < mapp->speed); 219 break; 220 } 221 if (match) 222 return (mapp->type); 223 } 224 /* No match found; return given type. */ 225 return (type); 226 } 227 228 int 229 baudrate(rate) 230 char *rate; 231 { 232 233 /* The baudrate number can be preceded by a 'B', which is ignored. */ 234 if (*rate == 'B') 235 ++rate; 236 237 return (atoi(rate)); 238 } 239