freebsd-dev/contrib/bind/lib/irs/getgrent.c
2002-02-04 19:12:46 +00:00

224 lines
4.6 KiB
C

/*
* Copyright (c) 1996-1999 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#if !defined(LINT) && !defined(CODECENTER)
static const char rcsid[] = "$Id: getgrent.c,v 1.20 2001/05/29 05:48:41 marka Exp $";
#endif
/* Imports */
#include "port_before.h"
#if !defined(WANT_IRS_GR) || defined(__BIND_NOSTATIC)
static int __bind_irs_gr_unneeded;
#else
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <errno.h>
#include <grp.h>
#include <resolv.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <irs.h>
#include "port_after.h"
#include "irs_data.h"
/* Forward */
static struct net_data *init(void);
void endgrent(void);
/* Public */
struct group *
getgrent() {
struct net_data *net_data = init();
return (getgrent_p(net_data));
}
struct group *
getgrnam(const char *name) {
struct net_data *net_data = init();
return (getgrnam_p(name, net_data));
}
struct group *
getgrgid(gid_t gid) {
struct net_data *net_data = init();
return (getgrgid_p(gid, net_data));
}
int
setgroupent(int stayopen) {
struct net_data *net_data = init();
return (setgroupent_p(stayopen, net_data));
}
#ifdef SETGRENT_VOID
void
setgrent(void) {
struct net_data *net_data = init();
setgrent_p(net_data);
}
#else
int
setgrent(void) {
struct net_data *net_data = init();
return (setgrent_p(net_data));
}
#endif /* SETGRENT_VOID */
void
endgrent() {
struct net_data *net_data = init();
endgrent_p(net_data);
}
int
getgrouplist(GETGROUPLIST_ARGS) {
struct net_data *net_data = init();
return (getgrouplist_p(name, basegid, groups, ngroups, net_data));
}
/* Shared private. */
struct group *
getgrent_p(struct net_data *net_data) {
struct irs_gr *gr;
if (!net_data || !(gr = net_data->gr))
return (NULL);
net_data->gr_last = (*gr->next)(gr);
return (net_data->gr_last);
}
struct group *
getgrnam_p(const char *name, struct net_data *net_data) {
struct irs_gr *gr;
if (!net_data || !(gr = net_data->gr))
return (NULL);
if (net_data->gr_stayopen && net_data->gr_last &&
!strcmp(net_data->gr_last->gr_name, name))
return (net_data->gr_last);
net_data->gr_last = (*gr->byname)(gr, name);
if (!net_data->gr_stayopen)
endgrent();
return (net_data->gr_last);
}
struct group *
getgrgid_p(gid_t gid, struct net_data *net_data) {
struct irs_gr *gr;
if (!net_data || !(gr = net_data->gr))
return (NULL);
if (net_data->gr_stayopen && net_data->gr_last &&
(gid_t)net_data->gr_last->gr_gid == gid)
return (net_data->gr_last);
net_data->gr_last = (*gr->bygid)(gr, gid);
if (!net_data->gr_stayopen)
endgrent();
return (net_data->gr_last);
}
int
setgroupent_p(int stayopen, struct net_data *net_data) {
struct irs_gr *gr;
if (!net_data || !(gr = net_data->gr))
return (0);
(*gr->rewind)(gr);
net_data->gr_stayopen = (stayopen != 0);
if (stayopen == 0)
net_data_minimize(net_data);
return (1);
}
#ifdef SETGRENT_VOID
void
setgrent_p(struct net_data *net_data) {
(void)setgroupent_p(0, net_data);
}
#else
int
setgrent_p(struct net_data *net_data) {
return (setgroupent_p(0, net_data));
}
#endif /* SETGRENT_VOID */
void
endgrent_p(struct net_data *net_data) {
struct irs_gr *gr;
if ((net_data != NULL) && ((gr = net_data->gr) != NULL))
(*gr->minimize)(gr);
}
int
getgrouplist_p(const char *name, gid_t basegid, gid_t *groups, int *ngroups,
struct net_data *net_data) {
struct irs_gr *gr;
if (!net_data || !(gr = net_data->gr)) {
*ngroups = 0;
return (-1);
}
return ((*gr->list)(gr, name, basegid, groups, ngroups));
}
/* Private */
static struct net_data *
init() {
struct net_data *net_data;
if (!(net_data = net_data_init(NULL)))
goto error;
if (!net_data->gr) {
net_data->gr = (*net_data->irs->gr_map)(net_data->irs);
if (!net_data->gr || !net_data->res) {
error:
errno = EIO;
return (NULL);
}
(*net_data->gr->res_set)(net_data->gr, net_data->res,
NULL);
}
return (net_data);
}
#endif /* WANT_IRS_GR */