1/*
2 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (c) 1996,1999 by Internet Software Consortium.
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
15 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include "port_before.h"
19
20#include <sys/types.h>
21#include <sys/socket.h>
22#include <netinet/in.h>
23#include <arpa/nameser.h>
24#include <resolv.h>
25
26#include <ctype.h>
27#include <errno.h>
28#include <stdio.h>
29#include <string.h>
30#include <stdlib.h>
31
32#include <irs.h>
33
34#include "port_after.h"
35
36#include "irs_p.h"
37
38#ifdef SPRINTF_CHAR
39# define SPRINTF(x) strlen(sprintf/**/x)
40#else
41# define SPRINTF(x) sprintf x
42#endif
43
44void
45map_v4v6_address(const char *src, char *dst) {
46	u_char *p = (u_char *)dst;
47	char tmp[NS_INADDRSZ];
48	int i;
49
50	/* Stash a temporary copy so our caller can update in place. */
51	memcpy(tmp, src, NS_INADDRSZ);
52	/* Mark this ipv6 addr as a mapped ipv4. */
53	for (i = 0; i < 10; i++)
54		*p++ = 0x00;
55	*p++ = 0xff;
56	*p++ = 0xff;
57	/* Retrieve the saved copy and we're done. */
58	memcpy((void*)p, tmp, NS_INADDRSZ);
59}
60
61int
62make_group_list(struct irs_gr *this, const char *name,
63	gid_t basegid, gid_t *groups, int *ngroups)
64{
65	struct group *grp;
66	int i, ng;
67	int ret, maxgroups;
68
69	ret = -1;
70	ng = 0;
71	maxgroups = *ngroups;
72	/*
73	 * When installing primary group, duplicate it;
74	 * the first element of groups is the effective gid
75	 * and will be overwritten when a setgid file is executed.
76	 */
77	if (ng >= maxgroups)
78		goto done;
79	groups[ng++] = basegid;
80	if (ng >= maxgroups)
81		goto done;
82	groups[ng++] = basegid;
83	/*
84	 * Scan the group file to find additional groups.
85	 */
86	(*this->rewind)(this);
87	while ((grp = (*this->next)(this)) != NULL) {
88		if ((gid_t)grp->gr_gid == basegid)
89			continue;
90		for (i = 0; grp->gr_mem[i]; i++) {
91			if (!strcmp(grp->gr_mem[i], name)) {
92				if (ng >= maxgroups)
93					goto done;
94				groups[ng++] = grp->gr_gid;
95				break;
96			}
97		}
98	}
99	ret = 0;
100 done:
101	*ngroups = ng;
102	return (ret);
103}
104
105/*! \file */
106