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/*
netgroup.c - NSS lookup functions for netgroup entries
Copyright (C) 2006 West Consulting
Copyright (C) 2006, 2007 Arthur de Jong
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <nss.h>
#include <errno.h>
#include "prototypes.h"
#include "common.h"
#include "compat/attrs.h"
/* we redifine this here because we need to return NSS_STATUS_RETURN
if we have sucessfully read some entries */
#undef ERROR_OUT_NOSUCCESS
#define ERROR_OUT_NOSUCCESS(fp,retv) \
(void)tio_close(fp); \
fp=NULL; \
if (result->first) \
{ \
*errnop=ENOENT; \
return nslcd2nss(retv); \
} \
else \
return NSS_STATUS_RETURN;
/* function for reading a single result entry */
static enum nss_status read_netgrent(
TFILE *fp,struct __netgrent *result,
char *buffer,size_t buflen,int *errnop)
{
int32_t tmpint32;
int type;
size_t bufptr=0;
/* read netgroup type */
READ_INT32(fp,type);
if (type==NETGROUP_TYPE_NETGROUP)
{
/* the response is a reference to another netgroup */
result->type=group_val;
READ_STRING_BUF(fp,result->val.group);
}
else if (type==NETGROUP_TYPE_TRIPLE)
{
/* the response is a host/user/domain triple */
result->type=triple_val;
/* read host and revert to NULL on empty string */
READ_STRING_BUF(fp,result->val.triple.host);
if (result->val.triple.host[0]=='\0')
{
result->val.triple.host=NULL;
bufptr--; /* free unused space */
}
/* read user and revert to NULL on empty string */
READ_STRING_BUF(fp,result->val.triple.user);
if (result->val.triple.user[0]=='\0')
{
result->val.triple.user=NULL;
bufptr--; /* free unused space */
}
/* read domain and revert to NULL on empty string */
READ_STRING_BUF(fp,result->val.triple.domain);
if (result->val.triple.domain[0]=='\0')
{
result->val.triple.domain=NULL;
bufptr--; /* free unused space */
}
}
else
return NSS_STATUS_UNAVAIL;
/* flag the fact that we have successfully returned an entry */
result->first=0;
/* we're done */
return NSS_STATUS_SUCCESS;
}
/* thread-local file pointer to an ongoing request */
static __thread TFILE *netgrentfp;
enum nss_status _nss_ldap_setnetgrent(const char *group,struct __netgrent *result)
{
/* we cannot use NSS_SETENT() here because we have a parameter */
int32_t tmpint32;
int errnocp;
int *errnop;
errnop=&errnocp;
/* check parameter */
if ((group==NULL)||(group[0]=='\0'))
return NSS_STATUS_UNAVAIL;
/* open a new stream and write the request */
OPEN_SOCK(netgrentfp);
WRITE_REQUEST(netgrentfp,NSLCD_ACTION_NETGROUP_BYNAME);
WRITE_STRING(netgrentfp,group);
WRITE_FLUSH(netgrentfp);
/* read response header */
READ_RESPONSEHEADER(netgrentfp,NSLCD_ACTION_NETGROUP_BYNAME);
/* set the first flag, this is used to check if we should
return NSS_STATUS_NOTFOUND (entry not found) or
NSS_STATUS_RETURN (entry found but no more lines) */
result->first=1;
return NSS_STATUS_SUCCESS;
}
enum nss_status _nss_ldap_getnetgrent_r(struct __netgrent *result,char *buffer,size_t buflen,int *errnop)
{
NSS_GETENT(netgrentfp,read_netgrent(netgrentfp,result,buffer,buflen,errnop));
}
enum nss_status _nss_ldap_endnetgrent(struct __netgrent UNUSED(* result))
{
NSS_ENDENT(netgrentfp);
}
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