Annotation of src/usr.bin/systat/inetname.c, Revision 1.3
1.3 ! guenther 1: /* $OpenBSD: inetname.c,v 1.2 2015/01/16 00:03:37 deraadt Exp $ */
1.1 giovanni 2:
3: /*-
4: * Copyright (c) 1980, 1992, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. Neither the name of the University nor the names of its contributors
16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
31:
1.2 deraadt 32: #include <sys/signal.h>
1.1 giovanni 33: #include <sys/socket.h>
34:
35: #include <netinet/in.h>
36:
37: #include <netdb.h>
38: #include <stdlib.h>
39: #include <string.h>
40:
41: #include "systat.h"
42:
43: const char *
44: inet6name(struct in6_addr *in6)
45: {
46: static char line[NI_MAXHOST];
47: struct sockaddr_in6 sin6;
48: int flags;
49:
50: flags = nflag ? NI_NUMERICHOST : 0;
51: if (IN6_IS_ADDR_UNSPECIFIED(in6))
52: return "*";
53: memset(&sin6, 0, sizeof(sin6));
54: sin6.sin6_family = AF_INET6;
55: sin6.sin6_addr = *in6;
1.3 ! guenther 56: if (getnameinfo((struct sockaddr *)&sin6, sizeof(struct sockaddr_in6),
1.1 giovanni 57: line, sizeof(line), NULL, 0, flags) == 0)
58: return line;
59: return "?";
60: }
61:
62: const char *
63: inetname(struct in_addr in)
64: {
65: static char line[NI_MAXHOST];
66: struct sockaddr_in si;
67: int flags, e;
68:
69: flags = nflag ? NI_NUMERICHOST : 0;
70: if (in.s_addr == INADDR_ANY)
71: return "*";
72:
73: memset(&si, 0, sizeof(si));
74: si.sin_family = AF_INET;
75: si.sin_addr = in;
76:
1.3 ! guenther 77: e = getnameinfo((struct sockaddr *)&si, sizeof(struct sockaddr_in),
1.1 giovanni 78: line, sizeof(line), NULL, 0, flags);
79:
80: if (e == 0)
81: return line;
82:
83: error("Lookup: %s", gai_strerror(e));
84:
85: return "?";
86: }