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