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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 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* files/getgrent.c -- "files" backend for nsswitch "group" database
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <grp.h>
#include <unistd.h> /* for GF_PATH */
#include <stdlib.h> /* for GF_PATH */
#include "files_common.h"
#include <strings.h>
static uint_t
hash_grname(nss_XbyY_args_t *argp, int keyhash, const char *line,
int linelen)
{
const char *name;
int namelen, i;
uint_t hash = 0;
if (keyhash) {
name = argp->key.name;
namelen = strlen(name);
} else {
name = line;
namelen = 0;
while (linelen-- && *line++ != ':')
namelen++;
}
for (i = 0; i < namelen; i++)
hash = hash * 15 + name[i];
return (hash);
}
static uint_t
hash_grgid(nss_XbyY_args_t *argp, int keyhash, const char *line,
int linelen)
{
uint_t id;
const char *linep, *limit, *end;
linep = line;
limit = line + linelen;
if (keyhash)
return ((uint_t)argp->key.gid);
/* skip groupname */
while (linep < limit && *linep++ != ':');
/* skip password */
while (linep < limit && *linep++ != ':');
if (linep == limit)
return (GID_NOBODY);
/* gid */
end = linep;
id = (uint_t)strtol(linep, (char **)&end, 10);
/* empty gid */
if (linep == end)
return (GID_NOBODY);
return (id);
}
static files_hash_func hash_gr[2] = { hash_grname, hash_grgid };
static files_hash_t hashinfo = {
DEFAULTMUTEX,
sizeof (struct group),
NSS_BUFLEN_GROUP,
2,
hash_gr
};
static int
check_grname(nss_XbyY_args_t *argp, const char *line, int linelen)
{
const char *linep, *limit;
const char *keyp = argp->key.name;
linep = line;
limit = line + linelen;
/* +/- entries valid for compat source only */
if (linelen == 0 || *line == '+' || *line == '-')
return (0);
while (*keyp && linep < limit && *keyp == *linep) {
keyp++;
linep++;
}
return (linep < limit && *keyp == '\0' && *linep == ':');
}
static nss_status_t
getbyname(be, a)
files_backend_ptr_t be;
void *a;
{
return (_nss_files_XY_hash(be, a, 0, &hashinfo, 0, check_grname));
}
static int
check_grgid(nss_XbyY_args_t *argp, const char *line, int linelen)
{
const char *linep, *limit, *end;
gid_t gr_gid;
linep = line;
limit = line + linelen;
/* +/- entries valid for compat source only */
if (linelen == 0 || *line == '+' || *line == '-')
return (0);
/* skip username */
while (linep < limit && *linep++ != ':');
/* skip password */
while (linep < limit && *linep++ != ':');
if (linep == limit)
return (0);
/* uid */
end = linep;
gr_gid = (gid_t)strtol(linep, (char **)&end, 10);
/* empty gid is not valid */
if (linep == end)
return (0);
return (gr_gid == argp->key.gid);
}
static nss_status_t
getbygid(be, a)
files_backend_ptr_t be;
void *a;
{
return (_nss_files_XY_hash(be, a, 0, &hashinfo, 1, check_grgid));
}
static nss_status_t
getbymember(be, a)
files_backend_ptr_t be;
void *a;
{
struct nss_groupsbymem *argp = (struct nss_groupsbymem *)a;
return (_nss_files_do_all(be, argp, argp->username,
(files_do_all_func_t)argp->process_cstr));
}
static files_backend_op_t group_ops[] = {
_nss_files_destr,
_nss_files_endent,
_nss_files_setent,
_nss_files_getent_rigid,
getbyname,
getbygid,
getbymember
};
/*ARGSUSED*/
nss_backend_t *
_nss_files_group_constr(dummy1, dummy2, dummy3)
const char *dummy1, *dummy2, *dummy3;
{
return (_nss_files_constr(group_ops,
sizeof (group_ops) / sizeof (group_ops[0]),
GF_PATH,
NSS_LINELEN_GROUP,
&hashinfo));
}
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