2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * $FreeBSD: src/lib/libc/gen/getttyent.c,v 1.11 1999/11/04 04:16:27 ache Exp $
34 * $DragonFly: src/lib/libcr/gen/Attic/getttyent.c,v 1.4 2004/07/05 17:30:59 eirikn Exp $
36 * @(#)getttyent.c 8.1 (Berkeley) 6/4/93
50 #define MALLOCCHUNK 100
52 static char *skip (char *);
53 static char *value (char *);
61 if (strncmp(tty, "/dev/", 5) == 0)
64 while ( (t = getttyent()) )
65 if (!strcmp(tty, t->ty_name))
74 static struct ttyent tty;
79 if (!tf && !setttyent())
82 if (!fgets(p = line, lbsize, tf))
84 /* extend buffer if line was too big, and retry */
85 while (!index(p, '\n')) {
87 lbsize += MALLOCCHUNK;
88 if ((p = realloc(line, lbsize)) == NULL) {
93 if (!fgets(&line[i], lbsize - i, tf))
96 while (isspace((unsigned char)*p))
102 #define scmp(e) !strncmp(p, e, sizeof(e) - 1) && isspace((unsigned char)p[sizeof(e) - 1])
103 #define vcmp(e) !strncmp(p, e, sizeof(e) - 1) && p[sizeof(e) - 1] == '='
108 if (!*(tty.ty_getty = p))
109 tty.ty_getty = tty.ty_type = NULL;
112 if (!*(tty.ty_type = p))
115 /* compatibility kludge: handle network/dialup specially */
116 if (scmp(_TTYS_DIALUP))
117 tty.ty_status |= TTY_DIALUP;
118 else if (scmp(_TTYS_NETWORK))
119 tty.ty_status |= TTY_NETWORK;
124 tty.ty_window = NULL;
125 tty.ty_group = _TTYS_NOGROUP;
127 for (; *p; p = skip(p)) {
129 tty.ty_status &= ~TTY_ON;
130 else if (scmp(_TTYS_ON))
131 tty.ty_status |= TTY_ON;
132 else if (scmp(_TTYS_SECURE))
133 tty.ty_status |= TTY_SECURE;
134 else if (scmp(_TTYS_INSECURE))
135 tty.ty_status &= ~TTY_SECURE;
136 else if (scmp(_TTYS_DIALUP))
137 tty.ty_status |= TTY_DIALUP;
138 else if (scmp(_TTYS_NETWORK))
139 tty.ty_status |= TTY_NETWORK;
140 else if (vcmp(_TTYS_WINDOW))
141 tty.ty_window = value(p);
142 else if (vcmp(_TTYS_GROUP))
143 tty.ty_group = value(p);
148 if (zapchar == '#' || *p == '#')
149 while ((c = *++p) == ' ' || c == '\t')
154 if ( (p = index(p, '\n')) )
162 * Skip over the current field, removing quotes, and return a pointer to
172 for (q = 0, t = p; (c = *p) != '\0'; p++) {
174 q ^= QUOTED; /* obscure, but nice */
177 if (q == QUOTED && *p == '\\' && *(p+1) == '"')
187 if (c == '\t' || c == ' ' || c == '\n') {
190 while ((c = *p) == '\t' || c == ' ' || c == '\n')
204 return ((p = index(p, '=')) ? ++p : NULL);
212 if ((line = malloc(MALLOCCHUNK)) == NULL)
214 lbsize = MALLOCCHUNK;
219 } else if ( (tf = fopen(_PATH_TTYS, "r")) )
230 * NB: Don't free `line' because getttynam()
231 * may still be referencing it
234 rval = (fclose(tf) != EOF);
248 return ((t = getttynam(tty)) == NULL) ? 0 : !!(t->ty_status & flag);
257 return isttystat(tty, TTY_DIALUP);
264 return isttystat(tty, TTY_NETWORK);