1 #pragma ident "%Z%%M% %I% %E% SMI"
2 /*
3 * kdc/sock2p.c
4 *
5 * Copyright 2000 by the Massachusetts Institute of Technology.
6 *
7 * Export of this software from the United States of America may
8 * require a specific license from the United States Government.
9 * It is the responsibility of any person or organization contemplating
10 * export to obtain such a license before exporting.
11 *
12 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
13 * distribute this software and its documentation for any purpose and
14 * without fee is hereby granted, provided that the above copyright
15 * notice appear in all copies and that both that copyright notice and
16 * this permission notice appear in supporting documentation, and that
17 * the name of M.I.T. not be used in advertising or publicity pertaining
18 * to distribution of the software without specific, written prior
19 * permission. Furthermore if you modify this software you must label
20 * your software as modified software and not distribute it in such a
21 * fashion that it might be confused with the original M.I.T. software.
22 * M.I.T. makes no representations about the suitability of
23 * this software for any purpose. It is provided "as is" without express
24 * or implied warranty.
25 *
26 *
27 * Network code for Kerberos v5 KDC.
28 */
29
30 #define NEED_SOCKETS
31 #include "k5-int.h"
32 #ifdef HAVE_NETINET_IN_H
33 #include <sys/types.h>
34 #include <netinet/in.h>
35 #include <sys/socket.h>
36
37 #ifndef HAVE_INET_NTOP
38 char *
inet_ntop(int family,const void * address,char * buf,size_t bufsiz)39 inet_ntop (int family, const void *address, char *buf, size_t bufsiz)
40 {
41 char *p;
42 switch (family) {
43 case AF_INET:
44 {
45 p = inet_ntoa (*(const struct in_addr *)address);
46 try:
47 if (strlen (p) >= bufsiz)
48 return 0;
49 strcpy (buf, p);
50 break;
51 }
52 #ifdef KRB5_USE_INET6
53 case AF_INET6:
54 {
55 char abuf[46];
56 const unsigned char *byte = (const unsigned char *)
57 &((const struct in6_addr *)address)->s6_addr;
58 sprintf (abuf, "%x:%x:%x:%x:%x:%x:%x:%x",
59 byte[0] * 256 + byte[1],
60 byte[2] * 256 + byte[3],
61 byte[4] * 256 + byte[5],
62 byte[6] * 256 + byte[7],
63 byte[8] * 256 + byte[9],
64 byte[10] * 256 + byte[11],
65 byte[12] * 256 + byte[13],
66 byte[14] * 256 + byte[15]);
67 p = abuf;
68 goto try;
69 }
70 #endif /* KRB5_USE_INET6 */
71 default:
72 return 0;
73 }
74 return buf;
75 }
76 #endif
77
78 void
sockaddr2p(const struct sockaddr * s,char * buf,size_t bufsiz,int * port_p)79 sockaddr2p (const struct sockaddr *s, char *buf, size_t bufsiz, int *port_p)
80 {
81 const void *addr;
82 int port;
83 switch (s->sa_family) {
84 case AF_INET:
85 addr = &((const struct sockaddr_in *)s)->sin_addr;
86 port = ((const struct sockaddr_in *)s)->sin_port;
87 break;
88 #ifdef KRB5_USE_INET6
89 case AF_INET6:
90 addr = &((const struct sockaddr_in6 *)s)->sin6_addr;
91 port = ((const struct sockaddr_in6 *)s)->sin6_port;
92 break;
93 #endif
94 default:
95 if (bufsiz >= 2)
96 strcpy (buf, "?");
97 if (port_p)
98 *port_p = -1;
99 return;
100 }
101 if (inet_ntop (s->sa_family, addr, buf, bufsiz) == 0 && bufsiz >= 2)
102 strcpy (buf, "?");
103 if (port_p)
104 *port_p = port;
105 }
106
107 #endif /* INET */
108