1 /* $NetBSD: map.c,v 1.12 2010/02/03 15:34:46 roy 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)map.c 8.1 (Berkeley) 6/9/93"; 36 #endif 37 __RCSID("$NetBSD: map.c,v 1.12 2010/02/03 15:34:46 roy Exp $"); 38 #endif /* not lint */ 39 40 #include <sys/types.h> 41 #include <err.h> 42 #include <errno.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <term.h> 46 #include <termios.h> 47 #include "extern.h" 48 49 int baudrate __P((char *)); 50 51 /* Baud rate conditionals for mapping. */ 52 #define GT 0x01 53 #define EQ 0x02 54 #define LT 0x04 55 #define NOT 0x08 56 #define GE (GT | EQ) 57 #define LE (LT | EQ) 58 59 typedef struct map { 60 struct map *next; /* Linked list of maps. */ 61 const char *porttype; /* Port type, or "" for any. */ 62 const char *type; /* Terminal type to select. */ 63 int conditional; /* Baud rate conditionals bitmask. */ 64 int speed; /* Baud rate to compare against. */ 65 } MAP; 66 67 MAP *cur, *maplist; 68 69 /* 70 * Syntax for -m: 71 * [port-type][test baudrate]:terminal-type 72 * The baud rate tests are: >, <, @, =, ! 73 */ 74 void 75 add_mapping(port, arg) 76 const char *port; 77 char *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(1, "malloc"); 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 mapp->porttype = termp = 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 == '\0') /* 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: errx(1, "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 free(copy); 183 } 184 185 /* 186 * Return the type of terminal to use for a port of type 'type', as specified 187 * by the first applicable mapping in 'map'. If no mappings apply, return 188 * 'type'. 189 */ 190 const char * 191 mapped(type) 192 const char *type; 193 { 194 MAP *mapp; 195 int match; 196 197 match = 0; 198 for (mapp = maplist; mapp; mapp = mapp->next) 199 if (mapp->porttype == NULL || !strcmp(mapp->porttype, type)) { 200 switch (mapp->conditional) { 201 case 0: /* No test specified. */ 202 match = 1; 203 break; 204 case EQ: 205 match = (ospeed == mapp->speed); 206 break; 207 case GE: 208 match = (ospeed >= mapp->speed); 209 break; 210 case GT: 211 match = (ospeed > mapp->speed); 212 break; 213 case LE: 214 match = (ospeed <= mapp->speed); 215 break; 216 case LT: 217 match = (ospeed < mapp->speed); 218 break; 219 } 220 if (match) 221 return (mapp->type); 222 } 223 /* No match found; return given type. */ 224 return (type); 225 } 226 227 int 228 baudrate(rate) 229 char *rate; 230 { 231 232 /* The baudrate number can be preceded by a 'B', which is ignored. */ 233 if (*rate == 'B') 234 ++rate; 235 236 return (atoi(rate)); 237 } 238