1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 *
26 * Copyright 2019 OmniOS Community Edition (OmniOSce) Association.
27 */
28
29 #include <deflt.h>
30 #include <string.h>
31 #include <stddef.h>
32 #include <stdlib.h>
33 #include <stdio.h>
34 #include <compat.h>
35
36 #define DEFAULT_IP_LINE DEFAULT_IP"="
37
38 /*
39 * Code to handle /etc/default/ file for IPv4 command output compatibility
40 *
41 * Note: Handles BOTH the same as IP_VERSION6.
42 *
43 * Returns 1 if IP_VERSION4; 0 for other versions.
44 * Returns -1 if the value of DEFAULT_IP found in /etc/default/inet_type is
45 * invalid.
46 */
47 int
get_compat_flag(char ** value)48 get_compat_flag(char **value)
49 {
50 if (defopen(INET_DEFAULT_FILE) == 0) {
51 char *cp;
52 int flags;
53
54 /*
55 * ignore case
56 */
57 flags = defcntl(DC_GETFLAGS, 0);
58 TURNOFF(flags, DC_CASE);
59 (void) defcntl(DC_SETFLAGS, flags);
60
61 if ((cp = defread(DEFAULT_IP_LINE)) != NULL)
62 *value = strdup(cp);
63
64 /* close */
65 (void) defopen((char *)NULL);
66
67 if (*value != NULL) {
68 if (strcasecmp(*value, "IP_VERSION4") == 0) {
69 return (DEFAULT_PROT_V4_ONLY);
70 } else if (strcasecmp(*value, "BOTH") == 0 ||
71 strcasecmp(*value, "IP_VERSION6") == 0) {
72 return (DEFAULT_PROT_BOTH);
73 } else {
74 return (DEFAULT_PROT_BAD_VALUE);
75 }
76 }
77 }
78 /* No value set */
79 return (DEFAULT_PROT_BOTH);
80 }
81