1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23 /*
24 * Copyright (c) 2018 Peter Tribble.
25 * Copyright (c) 1994-1999, by Sun Microsystems, Inc.
26 */
27
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <sys/types.h>
31 #include <sys/socket.h>
32 #include <netinet/in.h>
33 #include <arpa/inet.h>
34 #include <string.h>
35 #include <netdb.h>
36 #include "getent.h"
37
38 static int
puthostent(const struct hostent * hp,FILE * fp)39 puthostent(const struct hostent *hp, FILE *fp)
40 {
41 char **p;
42 int rc = 0;
43 char obuf[INET6_ADDRSTRLEN];
44
45 if (hp == NULL) {
46 return (1);
47 }
48
49 for (p = hp->h_addr_list; *p != 0; p++) {
50 void *addr;
51 struct in_addr in4;
52 int af;
53 const char *res;
54 char **q;
55
56 if (hp->h_addrtype == AF_INET6) {
57 if (IN6_IS_ADDR_V4MAPPED((struct in6_addr *)*p)) {
58 IN6_V4MAPPED_TO_INADDR((struct in6_addr *)*p,
59 &in4);
60 af = AF_INET;
61 addr = &in4;
62 } else {
63 af = AF_INET6;
64 addr = *p;
65 }
66 } else {
67 af = AF_INET;
68 addr = *p;
69 }
70 res = inet_ntop(af, addr, obuf, sizeof (obuf));
71 if (res == 0) {
72 rc = 1;
73 continue;
74 }
75 if (fprintf(fp, "%s\t%s", res, hp->h_name) == EOF)
76 rc = 1;
77 for (q = hp->h_aliases; q && *q; q++) {
78 if (fprintf(fp, " %s", *q) == EOF)
79 rc = 1;
80 }
81 if (putc('\n', fp) == EOF)
82 rc = 1;
83 }
84 return (rc);
85 }
86
87 /*
88 * getipnodebyname/addr - get entries from ipnodes database
89 */
90 int
dogetipnodes(const char ** list)91 dogetipnodes(const char **list)
92 {
93 struct hostent *hp;
94 int rc = EXC_SUCCESS;
95 struct in6_addr in6;
96 struct in_addr in4;
97 int af, len;
98 void *addr;
99 int err_ret;
100
101 if (list == NULL || *list == NULL) {
102 rc = EXC_ENUM_NOT_SUPPORTED;
103 } else {
104 for (; *list != NULL; list++) {
105 if (strchr(*list, ':') != 0) {
106 af = AF_INET6;
107 len = sizeof (in6);
108 addr = &in6;
109 } else {
110 af = AF_INET;
111 len = sizeof (in4);
112 addr = &in4;
113 }
114 if (inet_pton(af, *list, addr) == 1)
115 hp = getipnodebyaddr(addr, len, af, &err_ret);
116 else
117 hp = getipnodebyname(*list, AF_INET6,
118 AI_V4MAPPED|AI_ALL, &err_ret);
119 if (hp == NULL)
120 rc = EXC_NAME_NOT_FOUND;
121 else
122 (void) puthostent(hp, stdout);
123 }
124 }
125
126 return (rc);
127 }
128