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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* nisplus/getnetent.c -- NIS+ backend for nsswitch "net" database
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <string.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "nisplus_common.h"
#include "nisplus_tables.h"
static int nettoa(int anet, char *buf, int buflen, char **pnull);
static nss_status_t
getbyname(be, a)
nisplus_backend_ptr_t be;
void *a;
{
nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
/*
* Don't have to do anything for case-insensitivity; the NIS+ table
* has the right flags enabled in the 'cname' and 'name' columns.
*/
return (_nss_nisplus_lookup(be, argp, NET_TAG_NAME, argp->key.name));
}
static nss_status_t
getbyaddr(be, a)
nisplus_backend_ptr_t be;
void *a;
{
nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
char addrstr[16];
char *pnull;
nss_status_t rc;
if (nettoa((int)argp->key.netaddr.net, addrstr, 16, &pnull) != 0)
return (NSS_UNAVAIL); /* it's really ENOMEM */
rc = _nss_nisplus_lookup(be, argp, NET_TAG_ADDR, addrstr);
/*
* if not found, try again with the untruncated address string
* that has the trailing zero(s)
*/
if (rc == NSS_NOTFOUND && pnull != NULL) {
*pnull = '.';
rc = _nss_nisplus_lookup(be, argp, NET_TAG_ADDR, addrstr);
}
return (rc);
}
/*
* Convert nisplus object into files format
* Returns NSS_STR_PARSE_{SUCCESS, ERANGE, PARSE}
*/
static int
nis_object2str(nobj, obj, be, argp)
int nobj;
nis_object *obj;
nisplus_backend_ptr_t be;
nss_XbyY_args_t *argp;
{
char *buffer, *linep, *limit;
char *cname, *addr;
int buflen, cnamelen, addrlen;
int stat;
struct entry_col *ecol;
if (obj->zo_data.zo_type != NIS_ENTRY_OBJ ||
obj->EN_data.en_cols.en_cols_len < NET_COL) {
/* namespace/table/object is curdled */
return (NSS_STR_PARSE_PARSE);
}
ecol = obj->EN_data.en_cols.en_cols_val;
buflen = argp->buf.buflen;
buffer = argp->buf.buffer;
(void) memset(buffer, 0, buflen);
/* cname */
__NISPLUS_GETCOL_OR_RETURN(ecol, NET_NDX_CNAME,
cnamelen, cname);
/* addr */
__NISPLUS_GETCOL_OR_RETURN(ecol, NET_NDX_ADDR,
addrlen, addr);
if (inet_network(addr) == (in_addr_t)-1)
return (NSS_STR_PARSE_PARSE);
if (cnamelen + addrlen + 2 > buflen)
return (NSS_STR_PARSE_ERANGE);
(void) snprintf(buffer, buflen, "%s %s", cname, addr);
linep = buffer + cnamelen + addrlen + 1;
limit = buffer + buflen;
stat = nis_aliases_object2str(obj, nobj, cname, NULL, linep, limit);
if (stat != NSS_STR_PARSE_SUCCESS)
return (stat);
if (argp->buf.result != NULL) {
/*
* Some front end marshallers may require the
* files formatted data in a distinct buffer
*/
if ((be->buffer = strdup(buffer)) == NULL)
return (NSS_STR_PARSE_PARSE);
be->buflen = strlen(buffer);
buffer = be->buffer;
}
#ifdef DEBUG
(void) fprintf(stdout, "networks [%s]\n", buffer);
(void) fflush(stdout);
#endif /* DEBUG */
return (NSS_STR_PARSE_SUCCESS);
}
static nisplus_backend_op_t net_ops[] = {
_nss_nisplus_destr,
_nss_nisplus_endent,
_nss_nisplus_setent,
_nss_nisplus_getent,
getbyname,
getbyaddr
};
/*ARGSUSED*/
nss_backend_t *
_nss_nisplus_networks_constr(dummy1, dummy2, dummy3)
const char *dummy1, *dummy2, *dummy3;
{
return (_nss_nisplus_constr(net_ops,
sizeof (net_ops) / sizeof (net_ops[0]),
NET_TBLNAME, nis_object2str));
}
/*
* Takes an unsigned integer in host order, and returns a printable
* string for it as a network number. To allow for the possibility of
* naming subnets, only trailing dot-zeros are truncated. The location
* where the string is truncated (or set to '\0') is returned in *pnull.
*/
static int
nettoa(int anet, char *buf, int buflen, char **pnull)
{
char *p;
struct in_addr in;
int addr;
*pnull = NULL;
if (buf == 0)
return (1);
in = inet_makeaddr(anet, INADDR_ANY);
addr = in.s_addr;
(void) strlcpy(buf, inet_ntoa(in), buflen);
if ((IN_CLASSA_HOST & htonl(addr)) == 0) {
p = strchr(buf, '.');
if (p == NULL)
return (1);
*p = 0;
*pnull = p;
} else if ((IN_CLASSB_HOST & htonl(addr)) == 0) {
p = strchr(buf, '.');
if (p == NULL)
return (1);
p = strchr(p+1, '.');
if (p == NULL)
return (1);
*p = 0;
*pnull = p;
} else if ((IN_CLASSC_HOST & htonl(addr)) == 0) {
p = strrchr(buf, '.');
if (p == NULL)
return (1);
*p = 0;
*pnull = p;
}
return (0);
}
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