192 lines
5.0 KiB
C
192 lines
5.0 KiB
C
/* Copyright (C) 1997, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <nss.h>
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#include <errno.h>
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#include <ctype.h>
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#include <netdb.h>
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#include <string.h>
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#include <netgroup.h>
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#include <rpcsvc/nis.h>
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#include "nss-nisplus.h"
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#define NISENTRYVAL(idx, col, res) \
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(NIS_RES_OBJECT (res)[idx].EN_data.en_cols.en_cols_val[col].ec_value.ec_value_val)
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#define NISENTRYLEN(idx, col, res) \
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(NIS_RES_OBJECT (res)[idx].EN_data.en_cols.en_cols_val[col].ec_value.ec_value_len)
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enum nss_status
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_nss_nisplus_getnetgrent_r (struct __netgrent *result, char *buffer,
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size_t buflen, int *errnop)
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{
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enum nss_status status;
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/* Some sanity checks. */
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if (result->data == NULL || result->data_size == 0)
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return NSS_STATUS_NOTFOUND;
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if (result->position == result->data_size)
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return result->first ? NSS_STATUS_NOTFOUND : NSS_STATUS_RETURN;
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unsigned int entrylen
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= NISENTRYLEN (result->position, 1, (nis_result *) result->data);
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if (entrylen > 0)
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{
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/* We have a list of other netgroups. */
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result->type = group_val;
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if (entrylen >= buflen)
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{
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*errnop = ERANGE;
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return NSS_STATUS_TRYAGAIN;
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}
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strncpy (buffer, NISENTRYVAL (result->position, 1,
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(nis_result *) result->data),
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entrylen);
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buffer[entrylen] = '\0';
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result->val.group = buffer;
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++result->position;
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result->first = 0;
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return NSS_STATUS_SUCCESS;
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}
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/* Before we can copy the entry to the private buffer we have to make
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sure it is big enough. */
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unsigned int hostlen
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= NISENTRYLEN (result->position, 2, (nis_result *) result->data);
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unsigned int userlen
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= NISENTRYLEN (result->position, 3, (nis_result *) result->data);
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unsigned int domainlen
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= NISENTRYLEN (result->position, 4, (nis_result *) result->data);
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if (hostlen + userlen + domainlen + 6 > buflen)
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{
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*errnop = ERANGE;
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status = NSS_STATUS_TRYAGAIN;
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}
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else
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{
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char *cp = buffer;
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result->type = triple_val;
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if (hostlen == 0 ||
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NISENTRYVAL (result->position, 2,
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(nis_result *) result->data)[0] == '\0')
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result->val.triple.host = NULL;
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else
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{
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result->val.triple.host = cp;
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cp = __stpncpy (cp, NISENTRYVAL (result->position, 2,
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(nis_result *) result->data),
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hostlen);
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*cp++ = '\0';
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}
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if (userlen == 0 ||
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NISENTRYVAL (result->position, 3,
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(nis_result *) result->data)[0] == '\0')
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result->val.triple.user = NULL;
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else
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{
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result->val.triple.user = cp;
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cp = __stpncpy (cp, NISENTRYVAL (result->position, 3,
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(nis_result *) result->data),
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userlen);
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*cp++ = '\0';
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}
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if (domainlen == 0 ||
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NISENTRYVAL (result->position, 4,
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(nis_result *) result->data)[0] == '\0')
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result->val.triple.domain = NULL;
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else
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{
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result->val.triple.domain = cp;
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cp = __stpncpy (cp, NISENTRYVAL (result->position, 4,
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(nis_result *) result->data),
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domainlen);
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*cp = '\0';
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}
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status = NSS_STATUS_SUCCESS;
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/* Remember where we stopped reading. */
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++result->position;
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result->first = 0;
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}
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return status;
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}
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static void
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internal_endnetgrent (struct __netgrent *netgrp)
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{
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nis_freeresult ((nis_result *) netgrp->data);
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netgrp->data = NULL;
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netgrp->data_size = 0;
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netgrp->position = 0;
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}
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enum nss_status
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_nss_nisplus_setnetgrent (const char *group, struct __netgrent *netgrp)
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{
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char buf[strlen (group) + 25];
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if (group == NULL || group[0] == '\0')
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return NSS_STATUS_UNAVAIL;
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enum nss_status status = NSS_STATUS_SUCCESS;
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snprintf (buf, sizeof (buf), "[name=%s],netgroup.org_dir", group);
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netgrp->data = (char *) nis_list (buf, EXPAND_NAME, NULL, NULL);
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if (netgrp->data == NULL)
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{
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__set_errno (ENOMEM);
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status = NSS_STATUS_TRYAGAIN;
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}
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else if (niserr2nss (((nis_result *) netgrp->data)->status)
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!= NSS_STATUS_SUCCESS)
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{
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status = niserr2nss (((nis_result *) netgrp->data)->status);
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internal_endnetgrent (netgrp);
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}
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else
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{
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netgrp->data_size = ((nis_result *) netgrp->data)->objects.objects_len;
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netgrp->position = 0;
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netgrp->first = 1;
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}
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return status;
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}
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enum nss_status
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_nss_nisplus_endnetgrent (struct __netgrent *netgrp)
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{
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internal_endnetgrent (netgrp);
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return NSS_STATUS_SUCCESS;
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}
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