/* $NetBSD: getgrent.c,v 1.1.1.2 2012/09/09 16:07:55 christos Exp $ */ /* * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") * 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 ISC DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC 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 1.5 2005/04/27 04:56:24 sra Exp "; #endif /* Imports */ #include "port_before.h" #if !defined(WANT_IRS_GR) || defined(__BIND_NOSTATIC) static int __bind_irs_gr_unneeded; #else #include #include #include #include #include #include #include #include #include #include #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 */ /*! \file */