1 /* $NetBSD: map.c,v 1.13 2011/09/06 18:34:12 joerg 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 1.13 2011/09/06 18:34:12 joerg 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 static int baudrate(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 static 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(const char *port, char *arg) 76 { 77 MAP *mapp; 78 char *copy, *p, *termp; 79 80 copy = strdup(arg); 81 mapp = malloc((u_int)sizeof(MAP)); 82 if (copy == NULL || mapp == NULL) 83 err(1, "malloc"); 84 mapp->next = NULL; 85 if (maplist == NULL) 86 cur = maplist = mapp; 87 else { 88 cur->next = mapp; 89 cur = mapp; 90 } 91 92 mapp->porttype = arg; 93 mapp->conditional = 0; 94 95 arg = strpbrk(arg, "><@=!:"); 96 97 if (arg == NULL) { /* [?]term */ 98 mapp->type = mapp->porttype; 99 mapp->porttype = NULL; 100 goto done; 101 } 102 103 if (arg == mapp->porttype) /* [><@=! baud]:term */ 104 mapp->porttype = termp = NULL; 105 else 106 termp = arg; 107 108 for (;; ++arg) /* Optional conditionals. */ 109 switch(*arg) { 110 case '<': 111 if (mapp->conditional & GT) 112 goto badmopt; 113 mapp->conditional |= LT; 114 break; 115 case '>': 116 if (mapp->conditional & LT) 117 goto badmopt; 118 mapp->conditional |= GT; 119 break; 120 case '@': 121 case '=': /* Not documented. */ 122 mapp->conditional |= EQ; 123 break; 124 case '!': 125 mapp->conditional |= NOT; 126 break; 127 default: 128 goto next; 129 } 130 131 next: if (*arg == ':') { 132 if (mapp->conditional) 133 goto badmopt; 134 ++arg; 135 } else { /* Optional baudrate. */ 136 arg = strchr(p = arg, ':'); 137 if (arg == NULL) 138 goto badmopt; 139 *arg++ = '\0'; 140 mapp->speed = baudrate(p); 141 } 142 143 if (*arg == '\0') /* Non-optional type. */ 144 goto badmopt; 145 146 mapp->type = arg; 147 148 /* Terminate porttype, if specified. */ 149 if (termp != NULL) 150 *termp = '\0'; 151 152 /* If a NOT conditional, reverse the test. */ 153 if (mapp->conditional & NOT) 154 mapp->conditional = ~mapp->conditional & (EQ | GT | LT); 155 156 /* If user specified a port with an option flag, set it. */ 157 done: if (port) { 158 if (mapp->porttype) 159 badmopt: errx(1, "illegal -m option format: %s", copy); 160 mapp->porttype = port; 161 } 162 163 #ifdef MAPDEBUG 164 (void)printf("port: %s\n", mapp->porttype ? mapp->porttype : "ANY"); 165 (void)printf("type: %s\n", mapp->type); 166 (void)printf("conditional: "); 167 p = ""; 168 if (mapp->conditional & GT) { 169 (void)printf("GT"); 170 p = "/"; 171 } 172 if (mapp->conditional & EQ) { 173 (void)printf("%sEQ", p); 174 p = "/"; 175 } 176 if (mapp->conditional & LT) 177 (void)printf("%sLT", p); 178 (void)printf("\nspeed: %d\n", mapp->speed); 179 #endif 180 free(copy); 181 } 182 183 /* 184 * Return the type of terminal to use for a port of type 'type', as specified 185 * by the first applicable mapping in 'map'. If no mappings apply, return 186 * 'type'. 187 */ 188 const char * 189 mapped(const char *type) 190 { 191 MAP *mapp; 192 int match; 193 194 match = 0; 195 for (mapp = maplist; mapp; mapp = mapp->next) 196 if (mapp->porttype == NULL || !strcmp(mapp->porttype, type)) { 197 switch (mapp->conditional) { 198 case 0: /* No test specified. */ 199 match = 1; 200 break; 201 case EQ: 202 match = (ospeed == mapp->speed); 203 break; 204 case GE: 205 match = (ospeed >= mapp->speed); 206 break; 207 case GT: 208 match = (ospeed > mapp->speed); 209 break; 210 case LE: 211 match = (ospeed <= mapp->speed); 212 break; 213 case LT: 214 match = (ospeed < mapp->speed); 215 break; 216 } 217 if (match) 218 return (mapp->type); 219 } 220 /* No match found; return given type. */ 221 return (type); 222 } 223 224 static int 225 baudrate(char *rate) 226 { 227 228 /* The baudrate number can be preceded by a 'B', which is ignored. */ 229 if (*rate == 'B') 230 ++rate; 231 232 return (atoi(rate)); 233 } 234
Indexes created Sat Sep 20 22:09:52 GMT 2025