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 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 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 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