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1.1 deraadt 1: /* $NetBSD: map.c,v 1.4 1994/12/07 05:08:07 jtc 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 1.4 1994/12/07 05:08:07 jtc 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 = index(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: }