/* * 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(LIBC_SCCS) && !defined(lint)static const char rcsid[] = "$Id: util.c,v 1.1.206.1 2004/03/09 08:33:39 marka Exp $";#endif#include "port_before.h"#include <sys/types.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/nameser.h>#include <resolv.h>#include <ctype.h>#include <errno.h>#include <stdio.h>#include <string.h>#include <stdlib.h>#include <irs.h>#include "port_after.h"#include "irs_p.h"#ifdef SPRINTF_CHAR# define SPRINTF(x) strlen(sprintf/**/x)#else# define SPRINTF(x) sprintf x#endifvoidmap_v4v6_address(const char *src, char *dst) {	u_char *p = (u_char *)dst;	char tmp[NS_INADDRSZ];	int i;	/* Stash a temporary copy so our caller can update in place. */	memcpy(tmp, src, NS_INADDRSZ);	/* Mark this ipv6 addr as a mapped ipv4. */	for (i = 0; i < 10; i++)		*p++ = 0x00;	*p++ = 0xff;	*p++ = 0xff;	/* Retrieve the saved copy and we're done. */	memcpy((void*)p, tmp, NS_INADDRSZ);}intmake_group_list(struct irs_gr *this, const char *name,	gid_t basegid, gid_t *groups, int *ngroups){	struct group *grp;	int i, ng;	int ret, maxgroups;	ret = -1;	ng = 0;	maxgroups = *ngroups;	/*	 * When installing primary group, duplicate it;	 * the first element of groups is the effective gid	 * and will be overwritten when a setgid file is executed.	 */	if (ng >= maxgroups)		goto done;	groups[ng++] = basegid;	if (ng >= maxgroups)		goto done;	groups[ng++] = basegid;	/*	 * Scan the group file to find additional groups.	 */	(*this->rewind)(this);	while ((grp = (*this->next)(this)) != NULL) {		if ((gid_t)grp->gr_gid == basegid)			continue;		for (i = 0; grp->gr_mem[i]; i++) {			if (!strcmp(grp->gr_mem[i], name)) {				if (ng >= maxgroups)					goto done;				groups[ng++] = grp->gr_gid;				break;			}		}	}	ret = 0; done:	*ngroups = ng;	return (ret);}