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
44 void
map_v4v6_address(const char * src,char * dst)45 map_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
61 int
make_group_list(struct irs_gr * this,const char * name,gid_t basegid,gid_t * groups,int * ngroups)62 make_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