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1 #pragma ident "@(#)sock2p.c 1.1 02/11/19 SMI"
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2 /*
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3 * kdc/sock2p.c
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4 *
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5 * Copyright 2000 by the Massachusetts Institute of Technology.
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6 *
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7 * Export of this software from the United States of America may
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8 * require a specific license from the United States Government.
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9 * It is the responsibility of any person or organization contemplating
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10 * export to obtain such a license before exporting.
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11 *
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12 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
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13 * distribute this software and its documentation for any purpose and
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14 * without fee is hereby granted, provided that the above copyright
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15 * notice appear in all copies and that both that copyright notice and
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16 * this permission notice appear in supporting documentation, and that
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17 * the name of M.I.T. not be used in advertising or publicity pertaining
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18 * to distribution of the software without specific, written prior
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19 * permission. Furthermore if you modify this software you must label
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20 * your software as modified software and not distribute it in such a
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21 * fashion that it might be confused with the original M.I.T. software.
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22 * M.I.T. makes no representations about the suitability of
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23 * this software for any purpose. It is provided "as is" without express
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24 * or implied warranty.
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25 *
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26 *
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27 * Network code for Kerberos v5 KDC.
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28 */
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29
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30 #define NEED_SOCKETS
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31 #include "k5-int.h"
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32 #ifdef HAVE_NETINET_IN_H
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33 #include <sys/types.h>
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34 #include <netinet/in.h>
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35 #include <sys/socket.h>
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36
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37 #ifndef HAVE_INET_NTOP
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38 char *
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39 inet_ntop (int family, const void *address, char *buf, size_t bufsiz)
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40 {
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41 char *p;
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42 switch (family) {
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43 case AF_INET:
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44 {
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45 p = inet_ntoa (*(const struct in_addr *)address);
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46 try:
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47 if (strlen (p) >= bufsiz)
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48 return 0;
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49 strcpy (buf, p);
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50 break;
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51 }
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52 #ifdef KRB5_USE_INET6
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53 case AF_INET6:
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54 {
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55 char abuf[46];
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56 const unsigned char *byte = (const unsigned char *)
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57 &((const struct in6_addr *)address)->s6_addr;
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58 sprintf (abuf, "%x:%x:%x:%x:%x:%x:%x:%x",
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59 byte[0] * 256 + byte[1],
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60 byte[2] * 256 + byte[3],
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61 byte[4] * 256 + byte[5],
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62 byte[6] * 256 + byte[7],
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63 byte[8] * 256 + byte[9],
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64 byte[10] * 256 + byte[11],
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65 byte[12] * 256 + byte[13],
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66 byte[14] * 256 + byte[15]);
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67 p = abuf;
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68 goto try;
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69 }
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70 #endif /* KRB5_USE_INET6 */
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71 default:
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72 return 0;
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73 }
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74 return buf;
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75 }
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76 #endif
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77
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78 void
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79 sockaddr2p (const struct sockaddr *s, char *buf, size_t bufsiz, int *port_p)
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80 {
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81 const void *addr;
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82 int port;
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83 switch (s->sa_family) {
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84 case AF_INET:
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85 addr = &((const struct sockaddr_in *)s)->sin_addr;
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86 port = ((const struct sockaddr_in *)s)->sin_port;
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87 break;
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88 #ifdef KRB5_USE_INET6
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89 case AF_INET6:
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90 addr = &((const struct sockaddr_in6 *)s)->sin6_addr;
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91 port = ((const struct sockaddr_in6 *)s)->sin6_port;
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92 break;
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93 #endif
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94 default:
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95 if (bufsiz >= 2)
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96 strcpy (buf, "?");
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97 if (port_p)
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98 *port_p = -1;
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99 return;
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100 }
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101 if (inet_ntop (s->sa_family, addr, buf, bufsiz) == 0 && bufsiz >= 2)
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102 strcpy (buf, "?");
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103 if (port_p)
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104 *port_p = port;
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105 }
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106
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107 #endif /* INET */
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