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 * Copyright 1997 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #include <stdio.h>
27 #include <string.h>
28 #include <ctype.h>
29 #include <sys/types.h>
30 #include <nss_dbdefs.h>
31
32 static int str2bootent(const char *, int, void *, char *, int);
33
34 static DEFINE_NSS_DB_ROOT(db_root);
35
36 static void
_nss_initf_bootparams(nss_db_params_t * p)37 _nss_initf_bootparams(nss_db_params_t *p)
38 {
39 p->name = NSS_DBNAM_BOOTPARAMS;
40 p->default_config = NSS_DEFCONF_BOOTPARAMS;
41 }
42
43 int
bootparams_getbyname(char * name,char * linebuf,int linelen)44 bootparams_getbyname(
45 char *name, /* lookup key */
46 char *linebuf, /* buffer to put the answer in */
47 int linelen /* max # of bytes to put into linebuf */
48 )
49 {
50 nss_XbyY_args_t arg;
51 nss_status_t res;
52
53 NSS_XbyY_INIT(&arg, linebuf, linebuf, linelen, str2bootent);
54 arg.key.name = name;
55 res = nss_search(&db_root, _nss_initf_bootparams,
56 NSS_DBOP_BOOTPARAMS_BYNAME, &arg);
57 (void) NSS_XbyY_FINI(&arg);
58 return (arg.status = res);
59 }
60
61 /*
62 * Return values: 0 = success, 1 = parse error, 2 = erange ...
63 * The structure pointer passed in is a buffer in the caller's space.
64 * instring and buffer should be separate areas.
65 * The calling routine does all the real parsing; we just check limits and
66 * store the entry in the buffer we were passed by the caller.
67 * NOTE: we expect the data we're passed (in instr) has had the host's name
68 * stripped off the begining.
69 */
70 /* ARGSUSED */
71 static int
str2bootent(const char * instr,int lenstr,void * ent,char * buffer,int buflen)72 str2bootent(
73 const char *instr,
74 int lenstr,
75 void *ent, /* really (char *) */
76 char *buffer,
77 int buflen
78 )
79 {
80 const char *p, *limit;
81
82 if ((instr >= buffer && (buffer + buflen) > instr) ||
83 (buffer >= instr && (instr + lenstr) > buffer)) {
84 return (NSS_STR_PARSE_PARSE);
85 }
86 p = instr;
87 limit = p + lenstr;
88
89 /* Skip over leading whitespace */
90 while (p < limit && isspace(*p)) {
91 p++;
92 }
93 if (p >= limit) {
94 /* Syntax error -- no data! */
95 return (NSS_STR_PARSE_PARSE);
96 }
97 lenstr -= (p - instr);
98 if (buflen <= lenstr) { /* not enough buffer */
99 return (NSS_STR_PARSE_ERANGE);
100 }
101 (void) memcpy(buffer, p, lenstr);
102 buffer[lenstr] = '\0';
103
104 return (NSS_STR_PARSE_SUCCESS);
105 }
106