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/*
group.c - NSS lookup functions for group database
Copyright (C) 2006 West Consulting
Copyright (C) 2006 Arthur de Jong
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
MA 02110-1301 USA
*/
#include "config.h"
#include <string.h>
#include <nss.h>
#include <errno.h>
#include "exports.h"
#include "nslcd-client.h"
#include "common.h"
/* generic macros in development here */
#define READ_LOOP_NULLTERM(fp,arr,opr) \
READ_TYPE(fp,tmpint32,int32_t); \
/* allocate room for *char[num+1] */ \
tmp2int32=(tmpint32+1)*sizeof(char *); \
if ((bufptr+(size_t)tmp2int32)>buflen) \
{ ERROR_OUT_BUFERROR(fp) } /* will not fit */ \
(arr)=(char **)(buffer+bufptr); \
/* set last entry to NULL */ \
(arr)[tmpint32]=NULL; \
/* read all entries */ \
bufptr+=(size_t)tmpint32; \
for (tmp2int32=0;tmp2int32<tmpint32;tmp2int32++) \
{ \
opr \
}
/* macros for expanding the LDF_GROUP macro */
#define LDF_STRING(field) READ_STRING_BUF(fp,field)
#define LDF_TYPE(field,type) READ_TYPE(fp,field,type)
#define LDF_LOOP(field) READ_LOOP_NULLTERM(fp,result->gr_mem,field)
#define GROUP_NAME result->gr_name
#define GROUP_PASSWD result->gr_passwd
#define GROUP_GID result->gr_gid
#define GROUP_MEMBER result->gr_mem[tmp2int32]
enum nss_status _nss_ldap_getgrnam_r(const char *name,struct group *result,char *buffer,size_t buflen,int *errnop)
{
FILE *fp;
size_t bufptr=0;
int32_t tmpint32,tmp2int32;
/* open socket and write request */
OPEN_SOCK(fp);
WRITE_REQUEST(fp,NSLCD_ACTION_GROUP_BYNAME);
WRITE_STRING(fp,name);
WRITE_FLUSH(fp);
/* read response */
READ_RESPONSEHEADER(fp,NSLCD_ACTION_GROUP_BYNAME);
READ_RESPONSE(fp);
LDF_GROUP;
/* close socket and we're done */
fclose(fp);
return NSS_STATUS_SUCCESS;
}
enum nss_status _nss_ldap_getgrgid_r(gid_t gid,struct group *result,char *buffer,size_t buflen,int *errnop)
{
FILE *fp;
size_t bufptr=0;
int32_t tmpint32,tmp2int32;
/* open socket and write request */
OPEN_SOCK(fp);
WRITE_REQUEST(fp,NSLCD_ACTION_GROUP_BYGID);
WRITE_TYPE(fp,gid,gid_t);
WRITE_FLUSH(fp);
/* read response */
READ_RESPONSEHEADER(fp,NSLCD_ACTION_GROUP_BYGID);
READ_RESPONSE(fp);
LDF_GROUP;
/* close socket and we're done */
fclose(fp);
return NSS_STATUS_SUCCESS;
}
enum nss_status _nss_ldap_initgroups(const char *user,gid_t group,long int *start,long int *size,gid_t *groups,long int limit,int *errnop);
enum nss_status _nss_ldap_initgroups_dyn(const char *user,gid_t group,long int *start,long int *size,gid_t **groupsp,long int limit,int *errnop);
/* thread-local file pointer to an ongoing request */
static __thread FILE *pwentfp;
#define fp pwentfp
enum nss_status _nss_ldap_setgrent(void)
{
int32_t tmpint32;
/* this is to satisfy our macros */
int errnocp;
int *errnop;
errnop=&errnocp;
/* close the existing stream if it is still open */
if (fp!=NULL)
_nss_ldap_endpwent();
/* open a new stream and write the request */
OPEN_SOCK(fp);
WRITE_REQUEST(fp,NSLCD_ACTION_GROUP_ALL);
WRITE_FLUSH(fp);
/* read response header */
READ_RESPONSEHEADER(fp,NSLCD_ACTION_GROUP_ALL);
return NSS_STATUS_SUCCESS;
}
enum nss_status _nss_ldap_getgrent_r(struct group *result,char *buffer,size_t buflen,int *errnop)
{
int32_t tmpint32,tmp2int32;
size_t bufptr=0;
/* check that we have a valid file descriptor */
if (fp==NULL)
{
*errnop=ENOENT;
return NSS_STATUS_UNAVAIL;
}
/* read a response */
READ_RESPONSE(fp);
LDF_GROUP;
return NSS_STATUS_SUCCESS;
}
enum nss_status _nss_ldap_endgrent(void)
{
if (fp!=NULL)
fclose(fp);
return NSS_STATUS_SUCCESS;
}
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