1/*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
20 *
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
31 * SUCH DAMAGE.
| 1/*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
20 *
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
31 * SUCH DAMAGE.
|
32 *
33 * $FreeBSD: head/lib/libc/gen/getttyent.c 52856 1999-11-04 04:16:28Z ache $
| |
34 */
35
36#if defined(LIBC_SCCS) && !defined(lint)
37static char sccsid[] = "@(#)getttyent.c 8.1 (Berkeley) 6/4/93";
38#endif /* LIBC_SCCS and not lint */
| 32 */
33
34#if defined(LIBC_SCCS) && !defined(lint)
35static char sccsid[] = "@(#)getttyent.c 8.1 (Berkeley) 6/4/93";
36#endif /* LIBC_SCCS and not lint */
|
| 37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD: head/lib/libc/gen/getttyent.c 90045 2002-02-01 01:32:19Z obrien $");
|
39
40#include <ttyent.h>
41#include <stdio.h>
42#include <stdlib.h>
43#include <ctype.h>
44#include <string.h>
45
46static char zapchar;
47static FILE *tf;
48static size_t lbsize;
49static char *line;
50
51#define MALLOCCHUNK 100
52
| 39
40#include <ttyent.h>
41#include <stdio.h>
42#include <stdlib.h>
43#include <ctype.h>
44#include <string.h>
45
46static char zapchar;
47static FILE *tf;
48static size_t lbsize;
49static char *line;
50
51#define MALLOCCHUNK 100
52
|
53static char *skip __P((char *));
54static char *value __P((char *));
| 53static char *skip(char *);
54static char *value(char *);
|
55
56struct ttyent *
57getttynam(tty)
58 const char *tty;
59{
| 55
56struct ttyent *
57getttynam(tty)
58 const char *tty;
59{
|
60 register struct ttyent *t;
| 60 struct ttyent *t;
|
61
62 if (strncmp(tty, "/dev/", 5) == 0)
63 tty += 5;
64 setttyent();
65 while ( (t = getttyent()) )
66 if (!strcmp(tty, t->ty_name))
67 break;
68 endttyent();
69 return (t);
70}
71
72struct ttyent *
73getttyent()
74{
75 static struct ttyent tty;
| 61
62 if (strncmp(tty, "/dev/", 5) == 0)
63 tty += 5;
64 setttyent();
65 while ( (t = getttyent()) )
66 if (!strcmp(tty, t->ty_name))
67 break;
68 endttyent();
69 return (t);
70}
71
72struct ttyent *
73getttyent()
74{
75 static struct ttyent tty;
|
76 register char *p;
77 register int c;
| 76 char *p;
77 int c;
|
78 size_t i;
79
80 if (!tf && !setttyent())
81 return (NULL);
82 for (;;) {
83 if (!fgets(p = line, lbsize, tf))
84 return (NULL);
85 /* extend buffer if line was too big, and retry */
86 while (!index(p, '\n')) {
87 i = strlen(p);
88 lbsize += MALLOCCHUNK;
89 if ((p = realloc(line, lbsize)) == NULL) {
90 (void)endttyent();
91 return (NULL);
92 }
93 line = p;
94 if (!fgets(&line[i], lbsize - i, tf))
95 return (NULL);
96 }
97 while (isspace((unsigned char)*p))
98 ++p;
99 if (*p && *p != '#')
100 break;
101 }
102
103#define scmp(e) !strncmp(p, e, sizeof(e) - 1) && isspace((unsigned char)p[sizeof(e) - 1])
104#define vcmp(e) !strncmp(p, e, sizeof(e) - 1) && p[sizeof(e) - 1] == '='
105
106 zapchar = 0;
107 tty.ty_name = p;
108 p = skip(p);
109 if (!*(tty.ty_getty = p))
110 tty.ty_getty = tty.ty_type = NULL;
111 else {
112 p = skip(p);
113 if (!*(tty.ty_type = p))
114 tty.ty_type = NULL;
115 else {
116 /* compatibility kludge: handle network/dialup specially */
117 if (scmp(_TTYS_DIALUP))
118 tty.ty_status |= TTY_DIALUP;
119 else if (scmp(_TTYS_NETWORK))
120 tty.ty_status |= TTY_NETWORK;
121 p = skip(p);
122 }
123 }
124 tty.ty_status = 0;
125 tty.ty_window = NULL;
126 tty.ty_group = _TTYS_NOGROUP;
127
128 for (; *p; p = skip(p)) {
129 if (scmp(_TTYS_OFF))
130 tty.ty_status &= ~TTY_ON;
131 else if (scmp(_TTYS_ON))
132 tty.ty_status |= TTY_ON;
133 else if (scmp(_TTYS_SECURE))
134 tty.ty_status |= TTY_SECURE;
135 else if (scmp(_TTYS_INSECURE))
136 tty.ty_status &= ~TTY_SECURE;
137 else if (scmp(_TTYS_DIALUP))
138 tty.ty_status |= TTY_DIALUP;
139 else if (scmp(_TTYS_NETWORK))
140 tty.ty_status |= TTY_NETWORK;
141 else if (vcmp(_TTYS_WINDOW))
142 tty.ty_window = value(p);
143 else if (vcmp(_TTYS_GROUP))
144 tty.ty_group = value(p);
145 else
146 break;
147 }
148
149 if (zapchar == '#' || *p == '#')
150 while ((c = *++p) == ' ' || c == '\t')
151 ;
152 tty.ty_comment = p;
153 if (*p == 0)
154 tty.ty_comment = 0;
155 if ( (p = index(p, '\n')) )
156 *p = '\0';
157 return (&tty);
158}
159
160#define QUOTED 1
161
162/*
163 * Skip over the current field, removing quotes, and return a pointer to
164 * the next field.
165 */
166static char *
167skip(p)
| 78 size_t i;
79
80 if (!tf && !setttyent())
81 return (NULL);
82 for (;;) {
83 if (!fgets(p = line, lbsize, tf))
84 return (NULL);
85 /* extend buffer if line was too big, and retry */
86 while (!index(p, '\n')) {
87 i = strlen(p);
88 lbsize += MALLOCCHUNK;
89 if ((p = realloc(line, lbsize)) == NULL) {
90 (void)endttyent();
91 return (NULL);
92 }
93 line = p;
94 if (!fgets(&line[i], lbsize - i, tf))
95 return (NULL);
96 }
97 while (isspace((unsigned char)*p))
98 ++p;
99 if (*p && *p != '#')
100 break;
101 }
102
103#define scmp(e) !strncmp(p, e, sizeof(e) - 1) && isspace((unsigned char)p[sizeof(e) - 1])
104#define vcmp(e) !strncmp(p, e, sizeof(e) - 1) && p[sizeof(e) - 1] == '='
105
106 zapchar = 0;
107 tty.ty_name = p;
108 p = skip(p);
109 if (!*(tty.ty_getty = p))
110 tty.ty_getty = tty.ty_type = NULL;
111 else {
112 p = skip(p);
113 if (!*(tty.ty_type = p))
114 tty.ty_type = NULL;
115 else {
116 /* compatibility kludge: handle network/dialup specially */
117 if (scmp(_TTYS_DIALUP))
118 tty.ty_status |= TTY_DIALUP;
119 else if (scmp(_TTYS_NETWORK))
120 tty.ty_status |= TTY_NETWORK;
121 p = skip(p);
122 }
123 }
124 tty.ty_status = 0;
125 tty.ty_window = NULL;
126 tty.ty_group = _TTYS_NOGROUP;
127
128 for (; *p; p = skip(p)) {
129 if (scmp(_TTYS_OFF))
130 tty.ty_status &= ~TTY_ON;
131 else if (scmp(_TTYS_ON))
132 tty.ty_status |= TTY_ON;
133 else if (scmp(_TTYS_SECURE))
134 tty.ty_status |= TTY_SECURE;
135 else if (scmp(_TTYS_INSECURE))
136 tty.ty_status &= ~TTY_SECURE;
137 else if (scmp(_TTYS_DIALUP))
138 tty.ty_status |= TTY_DIALUP;
139 else if (scmp(_TTYS_NETWORK))
140 tty.ty_status |= TTY_NETWORK;
141 else if (vcmp(_TTYS_WINDOW))
142 tty.ty_window = value(p);
143 else if (vcmp(_TTYS_GROUP))
144 tty.ty_group = value(p);
145 else
146 break;
147 }
148
149 if (zapchar == '#' || *p == '#')
150 while ((c = *++p) == ' ' || c == '\t')
151 ;
152 tty.ty_comment = p;
153 if (*p == 0)
154 tty.ty_comment = 0;
155 if ( (p = index(p, '\n')) )
156 *p = '\0';
157 return (&tty);
158}
159
160#define QUOTED 1
161
162/*
163 * Skip over the current field, removing quotes, and return a pointer to
164 * the next field.
165 */
166static char *
167skip(p)
|
168 register char *p;
| 168 char *p;
|
169{
| 169{
|
170 register char *t;
171 register int c, q;
| 170 char *t;
171 int c, q;
|
172
173 for (q = 0, t = p; (c = *p) != '\0'; p++) {
174 if (c == '"') {
175 q ^= QUOTED; /* obscure, but nice */
176 continue;
177 }
178 if (q == QUOTED && *p == '\\' && *(p+1) == '"')
179 p++;
180 *t++ = *p;
181 if (q == QUOTED)
182 continue;
183 if (c == '#') {
184 zapchar = c;
185 *p = 0;
186 break;
187 }
188 if (c == '\t' || c == ' ' || c == '\n') {
189 zapchar = c;
190 *p++ = 0;
191 while ((c = *p) == '\t' || c == ' ' || c == '\n')
192 p++;
193 break;
194 }
195 }
196 *--t = '\0';
197 return (p);
198}
199
200static char *
201value(p)
| 172
173 for (q = 0, t = p; (c = *p) != '\0'; p++) {
174 if (c == '"') {
175 q ^= QUOTED; /* obscure, but nice */
176 continue;
177 }
178 if (q == QUOTED && *p == '\\' && *(p+1) == '"')
179 p++;
180 *t++ = *p;
181 if (q == QUOTED)
182 continue;
183 if (c == '#') {
184 zapchar = c;
185 *p = 0;
186 break;
187 }
188 if (c == '\t' || c == ' ' || c == '\n') {
189 zapchar = c;
190 *p++ = 0;
191 while ((c = *p) == '\t' || c == ' ' || c == '\n')
192 p++;
193 break;
194 }
195 }
196 *--t = '\0';
197 return (p);
198}
199
200static char *
201value(p)
|
202 register char *p;
| 202 char *p;
|
203{
204
205 return ((p = index(p, '=')) ? ++p : NULL);
206}
207
208int
209setttyent()
210{
211
212 if (line == NULL) {
213 if ((line = malloc(MALLOCCHUNK)) == NULL)
214 return (0);
215 lbsize = MALLOCCHUNK;
216 }
217 if (tf) {
218 rewind(tf);
219 return (1);
220 } else if ( (tf = fopen(_PATH_TTYS, "r")) )
221 return (1);
222 return (0);
223}
224
225int
226endttyent()
227{
228 int rval;
229
230 /*
231 * NB: Don't free `line' because getttynam()
232 * may still be referencing it
233 */
234 if (tf) {
235 rval = (fclose(tf) != EOF);
236 tf = NULL;
237 return (rval);
238 }
239 return (1);
240}
241
242static int
243isttystat(tty, flag)
244 const char *tty;
245 int flag;
246{
| 203{
204
205 return ((p = index(p, '=')) ? ++p : NULL);
206}
207
208int
209setttyent()
210{
211
212 if (line == NULL) {
213 if ((line = malloc(MALLOCCHUNK)) == NULL)
214 return (0);
215 lbsize = MALLOCCHUNK;
216 }
217 if (tf) {
218 rewind(tf);
219 return (1);
220 } else if ( (tf = fopen(_PATH_TTYS, "r")) )
221 return (1);
222 return (0);
223}
224
225int
226endttyent()
227{
228 int rval;
229
230 /*
231 * NB: Don't free `line' because getttynam()
232 * may still be referencing it
233 */
234 if (tf) {
235 rval = (fclose(tf) != EOF);
236 tf = NULL;
237 return (rval);
238 }
239 return (1);
240}
241
242static int
243isttystat(tty, flag)
244 const char *tty;
245 int flag;
246{
|
247 register struct ttyent *t;
| 247 struct ttyent *t;
|
248
249 return ((t = getttynam(tty)) == NULL) ? 0 : !!(t->ty_status & flag);
250}
251
252
253int
254isdialuptty(tty)
255 const char *tty;
256{
257
258 return isttystat(tty, TTY_DIALUP);
259}
260
261int isnettty(tty)
262 const char *tty;
263{
264
265 return isttystat(tty, TTY_NETWORK);
266}
| 248
249 return ((t = getttynam(tty)) == NULL) ? 0 : !!(t->ty_status & flag);
250}
251
252
253int
254isdialuptty(tty)
255 const char *tty;
256{
257
258 return isttystat(tty, TTY_DIALUP);
259}
260
261int isnettty(tty)
262 const char *tty;
263{
264
265 return isttystat(tty, TTY_NETWORK);
266}
|