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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1986-2002 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <ctype.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdlib.h>
#include <string.h>
#include <nss_dbdefs.h>
static int str2netent(const char *, int, void *, char *, int);
static int net_stayopen;
/*
* Unsynchronized, but it affects only
* efficiency, not correctness
*/
static DEFINE_NSS_DB_ROOT(db_root);
static DEFINE_NSS_GETENT(context);
static void
_nss_initf_net(nss_db_params_t *p)
{
p->name = NSS_DBNAM_NETWORKS;
p->default_config = NSS_DEFCONF_NETWORKS;
}
struct netent *
getnetbyname_r(const char *name, struct netent *result,
char *buffer, int buflen)
{
nss_XbyY_args_t arg;
nss_status_t res;
NSS_XbyY_INIT(&arg, result, buffer, buflen, str2netent);
arg.key.name = name;
arg.stayopen = net_stayopen;
res = nss_search(&db_root, _nss_initf_net,
NSS_DBOP_NETWORKS_BYNAME, &arg);
arg.status = res;
(void) NSS_XbyY_FINI(&arg);
return ((struct netent *)arg.returnval);
}
struct netent *
getnetbyaddr_r(long net, int type, struct netent *result,
char *buffer, int buflen)
{
nss_XbyY_args_t arg;
nss_status_t res;
NSS_XbyY_INIT(&arg, result, buffer, buflen, str2netent);
arg.key.netaddr.net = (uint32_t)net;
arg.key.netaddr.type = type;
arg.stayopen = net_stayopen;
res = nss_search(&db_root, _nss_initf_net,
NSS_DBOP_NETWORKS_BYADDR, &arg);
arg.status = res;
(void) NSS_XbyY_FINI(&arg);
return ((struct netent *)arg.returnval);
}
int
setnetent(int stay)
{
net_stayopen |= stay; /* === Or maybe just "=" ? */
nss_setent(&db_root, _nss_initf_net, &context);
return (0);
}
int
endnetent()
{
net_stayopen = 0;
nss_endent(&db_root, _nss_initf_net, &context);
nss_delete(&db_root);
return (0);
}
struct netent *
getnetent_r(struct netent *result, char *buffer, int buflen)
{
nss_XbyY_args_t arg;
nss_status_t res;
NSS_XbyY_INIT(&arg, result, buffer, buflen, str2netent);
/* No stayopen flag; of course you stay open for iteration */
res = nss_getent(&db_root, _nss_initf_net, &context, &arg);
arg.status = res;
(void) NSS_XbyY_FINI(&arg);
return ((struct netent *)arg.returnval);
}
/*
* Return values: 0 = success, 1 = parse error, 2 = erange ...
* The structure pointer passed in is a structure in the caller's space
* wherein the field pointers would be set to areas in the buffer if
* need be. instring and buffer should be separate areas.
*/
static int
str2netent(const char *instr, int lenstr,
void *ent /* really (struct netnet *) */, char *buffer, int buflen)
{
struct netent *net = (struct netent *)ent;
const char *p, *numstart, *limit, *namestart;
int namelen = 0;
ptrdiff_t numlen;
char numbuf[16];
if ((instr >= buffer && (buffer + buflen) > instr) ||
(buffer >= instr && (instr + lenstr) > buffer)) {
return (NSS_STR_PARSE_PARSE);
}
p = instr;
limit = p + lenstr;
while (p < limit && isspace(*p)) {
p++;
}
namestart = p;
while (p < limit && !isspace(*p)) {
p++; /* Skip over the canonical name */
}
namelen = (int)(p - namestart);
if (buflen <= namelen) { /* not enough buffer */
return (NSS_STR_PARSE_ERANGE);
}
(void) memcpy(buffer, namestart, namelen);
buffer[namelen] = '\0';
net->n_name = buffer;
while (p < limit && isspace(*p)) {
p++;
}
if (p >= limit) {
/* Syntax error -- no net number */
return (NSS_STR_PARSE_PARSE);
}
numstart = p;
do {
p++; /* Find the end of the net number */
} while (p < limit && !isspace(*p));
numlen = p - numstart;
if (numlen >= (ptrdiff_t)sizeof (numbuf)) {
/* Syntax error -- supposed number is too long */
return (NSS_STR_PARSE_PARSE);
}
(void) memcpy(numbuf, numstart, numlen);
numbuf[numlen] = '\0';
net->n_net = inet_network(numbuf);
if (net->n_net == (in_addr_t)-1) {
/* inet_network failed to parse the string */
return (NSS_STR_PARSE_PARSE);
}
net->n_addrtype = AF_INET;
while (p < limit && isspace(*p)) {
p++;
}
/*
* Although nss_files_XY_all calls us with # stripped,
* we should be able to deal with it here in order to
* be more useful.
*/
if (p >= limit || *p == '#') { /* no aliases, no problem */
char **ptr;
ptr = (char **)ROUND_UP(buffer + namelen + 1,
sizeof (char *));
if ((char *)ptr >= buffer + buflen) {
net->n_aliases = 0; /* hope they don't try to peek in */
return (NSS_STR_PARSE_ERANGE);
} else {
*ptr = 0;
net->n_aliases = ptr;
return (NSS_STR_PARSE_SUCCESS);
}
}
net->n_aliases = _nss_netdb_aliases(p, lenstr - (int)(p - instr),
buffer + namelen + 1, buflen - namelen - 1);
return (NSS_STR_PARSE_SUCCESS);
}
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