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/*
shadow.c - NSS lookup functions for shadow database
Copyright (C) 2006 West Consulting
Copyright (C) 2006, 2007, 2008, 2010 Arthur de Jong
Copyright (C) 2010 Symas Corporation
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 <string.h>
#include <errno.h>
#include "prototypes.h"
#include "common.h"
#include "compat/attrs.h"
/* read a single shadow entry from the stream */
static nss_status_t read_spwd(
TFILE *fp,struct spwd *result,
char *buffer,size_t buflen,int *errnop)
{
int32_t tmpint32;
size_t bufptr=0;
READ_BUF_STRING(fp,result->sp_namp);
READ_BUF_STRING(fp,result->sp_pwdp);
READ_INT32(fp,result->sp_lstchg);
READ_INT32(fp,result->sp_min);
READ_INT32(fp,result->sp_max);
READ_INT32(fp,result->sp_warn);
READ_INT32(fp,result->sp_inact);
READ_INT32(fp,result->sp_expire);
READ_INT32(fp,result->sp_flag);
return NSS_STATUS_SUCCESS;
}
#ifdef NSS_FLAVOUR_GLIBC
/* get a shadow entry by name */
nss_status_t _nss_ldap_getspnam_r(
const char *name,struct spwd *result,
char *buffer,size_t buflen,int *errnop)
{
NSS_BYNAME(NSLCD_ACTION_SHADOW_BYNAME,
name,
read_spwd(fp,result,buffer,buflen,errnop));
}
/* thread-local file pointer to an ongoing request */
static __thread TFILE *spentfp;
/* start listing all shadow users */
nss_status_t _nss_ldap_setspent(int UNUSED(stayopen))
{
NSS_SETENT(spentfp);
}
/* return a single shadow entry read from the stream */
nss_status_t _nss_ldap_getspent_r(
struct spwd *result,
char *buffer,size_t buflen,int *errnop)
{
NSS_GETENT(spentfp,NSLCD_ACTION_SHADOW_ALL,
read_spwd(spentfp,result,buffer,buflen,errnop));
}
/* close the stream opened by setspent() above */
nss_status_t _nss_ldap_endspent(void)
{
NSS_ENDENT(spentfp);
}
#endif /* NSS_FLAVOUR_GLIBC */
#ifdef NSS_FLAVOUR_SOLARIS
#ifdef HAVE_STRUCT_NSS_XBYY_ARGS_RETURNLEN
static nss_status_t read_spwdstring(TFILE *fp,nss_XbyY_args_t *args)
{
struct spwd result;
nss_status_t retv;
char *buffer;
char field_buf[128];
size_t buflen;
/* read the spwd */
retv=read_spwd(fp,&result,NSS_ARGS(args)->buf.buffer,args->buf.buflen,&errno);
if (retv!=NSS_STATUS_SUCCESS)
return retv;
/* allocate a temporary buffer */
buflen=args->buf.buflen;
buffer=(char *)malloc(buflen);
/* build the formatted string */
/* FIXME: implement proper buffer size checking */
sprintf(buffer,"%s:%s:",result.sp_namp,result.sp_pwdp);
if (result.sp_lstchg >= 0)
sprintf(field_buf,"%d:",result.sp_lstchg);
else
sprintf(field_buf,":");
strcat(buffer,field_buf);
if (result.sp_min >= 0)
sprintf(field_buf,"%d:",result.sp_min);
else
sprintf(field_buf,":");
strcat(buffer,field_buf);
if (result.sp_max >= 0)
sprintf(field_buf,"%d:",result.sp_max);
else
sprintf(field_buf,":");
strcat(buffer,field_buf);
if (result.sp_warn >= 0)
sprintf(field_buf,"%d:",result.sp_warn);
else
sprintf(field_buf,":");
strcat(buffer,field_buf);
if (result.sp_inact >= 0)
sprintf(field_buf,"%d:",result.sp_inact);
else
sprintf(field_buf,":");
strcat(buffer,field_buf);
if (result.sp_expire >= 0)
sprintf(field_buf,"%d:",result.sp_expire);
else
sprintf(field_buf,":");
strcat(buffer,field_buf);
if (result.sp_flag >= 0)
sprintf(field_buf,"%x",result.sp_flag);
else
sprintf(field_buf,":");
strcat(buffer,field_buf);
/* copy the result back to the result buffer and free the temporary one */
strcpy(NSS_ARGS(args)->buf.buffer,buffer);
free(buffer);
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.buffer;
NSS_ARGS(args)->returnlen=strlen(NSS_ARGS(args)->buf.buffer);
return NSS_STATUS_SUCCESS;
}
#define READ_RESULT(fp) \
NSS_ARGS(args)->buf.result? \
read_spwd(fp,(struct spwd *)NSS_ARGS(args)->buf.result,NSS_ARGS(args)->buf.buffer,NSS_ARGS(args)->buf.buflen,&errno): \
read_spwdstring(fp,args); \
if ((NSS_ARGS(args)->buf.result)&&(retv==NSS_STATUS_SUCCESS)) \
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.result;
#else /* not HAVE_STRUCT_NSS_XBYY_ARGS_RETURNLEN */
#define READ_RESULT(fp) \
read_spwd(fp,(struct spwd *)NSS_ARGS(args)->buf.result,NSS_ARGS(args)->buf.buffer,NSS_ARGS(args)->buf.buflen,&errno); \
if (retv==NSS_STATUS_SUCCESS) \
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.result;
#endif /* not HAVE_STRUCT_NSS_XBYY_ARGS_RETURNLEN */
static nss_status_t shadow_getspnam(nss_backend_t UNUSED(*be),void *args)
{
NSS_BYNAME(NSLCD_ACTION_SHADOW_BYNAME,
NSS_ARGS(args)->key.name,
READ_RESULT(fp));
}
static nss_status_t shadow_setspent(nss_backend_t *be,void UNUSED(*args))
{
NSS_SETENT(LDAP_BE(be)->fp);
}
static nss_status_t shadow_getspent(nss_backend_t *be,void *args)
{
NSS_GETENT(LDAP_BE(be)->fp,NSLCD_ACTION_SHADOW_ALL,
READ_RESULT(LDAP_BE(be)->fp));
}
static nss_status_t shadow_endspent(nss_backend_t *be,void UNUSED(*args))
{
NSS_ENDENT(LDAP_BE(be)->fp);
}
static nss_backend_op_t shadow_ops[]={
nss_ldap_destructor,
shadow_endspent,
shadow_setspent,
shadow_getspent,
shadow_getspnam
};
nss_backend_t *_nss_ldap_shadow_constr(const char UNUSED(*db_name),
const char UNUSED(*src_name),const char UNUSED(*cfg_args))
{
return nss_ldap_constructor(shadow_ops,sizeof(shadow_ops));
}
#endif /* NSS_FLAVOUR_SOLARIS */
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