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1.2 ! deraadt 1: /* $OpenBSD: map.c,v 1.4 1994/12/07 05:08:07 jtc Exp $ */
1.1 deraadt 2: /* $NetBSD: map.c,v 1.4 1994/12/07 05:08:07 jtc Exp $ */
3:
4: /*-
5: * Copyright (c) 1991, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "@(#)map.c 8.1 (Berkeley) 6/9/93";
40: #endif
1.2 ! deraadt 41: static char rcsid[] = "$OpenBSD: map.c,v 1.4 1994/12/07 05:08:07 jtc Exp $";
1.1 deraadt 42: #endif /* not lint */
43:
44: #include <sys/types.h>
45: #include <termios.h>
46: #include <errno.h>
47: #include <stdlib.h>
48: #include <string.h>
49: #include "extern.h"
50:
51: int baudrate __P((char *));
52:
53: /* Baud rate conditionals for mapping. */
54: #define GT 0x01
55: #define EQ 0x02
56: #define LT 0x04
57: #define NOT 0x08
58: #define GE (GT | EQ)
59: #define LE (LT | EQ)
60:
61: typedef struct map {
62: struct map *next; /* Linked list of maps. */
63: char *porttype; /* Port type, or "" for any. */
64: char *type; /* Terminal type to select. */
65: int conditional; /* Baud rate conditionals bitmask. */
66: int speed; /* Baud rate to compare against. */
67: } MAP;
68:
69: MAP *cur, *maplist;
70:
71: /*
72: * Syntax for -m:
73: * [port-type][test baudrate]:terminal-type
74: * The baud rate tests are: >, <, @, =, !
75: */
76: void
77: add_mapping(port, arg)
78: char *port, *arg;
79: {
80: MAP *mapp;
81: char *copy, *p, *termp;
82:
83: copy = strdup(arg);
84: mapp = malloc((u_int)sizeof(MAP));
85: if (copy == NULL || mapp == NULL)
86: err("%s", strerror(errno));
87: mapp->next = NULL;
88: if (maplist == NULL)
89: cur = maplist = mapp;
90: else {
91: cur->next = mapp;
92: cur = mapp;
93: }
94:
95: mapp->porttype = arg;
96: mapp->conditional = 0;
97:
98: arg = strpbrk(arg, "><@=!:");
99:
100: if (arg == NULL) { /* [?]term */
101: mapp->type = mapp->porttype;
102: mapp->porttype = NULL;
103: goto done;
104: }
105:
106: if (arg == mapp->porttype) /* [><@=! baud]:term */
107: termp = mapp->porttype = NULL;
108: else
109: termp = arg;
110:
111: for (;; ++arg) /* Optional conditionals. */
112: switch(*arg) {
113: case '<':
114: if (mapp->conditional & GT)
115: goto badmopt;
116: mapp->conditional |= LT;
117: break;
118: case '>':
119: if (mapp->conditional & LT)
120: goto badmopt;
121: mapp->conditional |= GT;
122: break;
123: case '@':
124: case '=': /* Not documented. */
125: mapp->conditional |= EQ;
126: break;
127: case '!':
128: mapp->conditional |= NOT;
129: break;
130: default:
131: goto next;
132: }
133:
134: next: if (*arg == ':') {
135: if (mapp->conditional)
136: goto badmopt;
137: ++arg;
138: } else { /* Optional baudrate. */
139: arg = index(p = arg, ':');
140: if (arg == NULL)
141: goto badmopt;
142: *arg++ = '\0';
143: mapp->speed = baudrate(p);
144: }
145:
146: if (*arg == NULL) /* Non-optional type. */
147: goto badmopt;
148:
149: mapp->type = arg;
150:
151: /* Terminate porttype, if specified. */
152: if (termp != NULL)
153: *termp = '\0';
154:
155: /* If a NOT conditional, reverse the test. */
156: if (mapp->conditional & NOT)
157: mapp->conditional = ~mapp->conditional & (EQ | GT | LT);
158:
159: /* If user specified a port with an option flag, set it. */
160: done: if (port) {
161: if (mapp->porttype)
162: badmopt: err("illegal -m option format: %s", copy);
163: mapp->porttype = port;
164: }
165:
166: #ifdef MAPDEBUG
167: (void)printf("port: %s\n", mapp->porttype ? mapp->porttype : "ANY");
168: (void)printf("type: %s\n", mapp->type);
169: (void)printf("conditional: ");
170: p = "";
171: if (mapp->conditional & GT) {
172: (void)printf("GT");
173: p = "/";
174: }
175: if (mapp->conditional & EQ) {
176: (void)printf("%sEQ", p);
177: p = "/";
178: }
179: if (mapp->conditional & LT)
180: (void)printf("%sLT", p);
181: (void)printf("\nspeed: %d\n", mapp->speed);
182: #endif
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: char *
191: mapped(type)
192: char *type;
193: {
194: MAP *mapp;
195: int match;
196:
197: for (mapp = maplist; mapp; mapp = mapp->next)
198: if (mapp->porttype == NULL || !strcmp(mapp->porttype, type)) {
199: switch (mapp->conditional) {
200: case 0: /* No test specified. */
201: match = 1;
202: break;
203: case EQ:
204: match = (ospeed == mapp->speed);
205: break;
206: case GE:
207: match = (ospeed >= mapp->speed);
208: break;
209: case GT:
210: match = (ospeed > mapp->speed);
211: break;
212: case LE:
213: match = (ospeed <= mapp->speed);
214: break;
215: case LT:
216: match = (ospeed < mapp->speed);
217: break;
218: }
219: if (match)
220: return (mapp->type);
221: }
222: /* No match found; return given type. */
223: return (type);
224: }
225:
226: int
227: baudrate(rate)
228: char *rate;
229: {
230:
231: /* The baudrate number can be preceded by a 'B', which is ignored. */
232: if (*rate == 'B')
233: ++rate;
234:
235: return (atoi(rate));
236: }