1 /*
2 * lib/krb5/os/port2ip.c
3 *
4 * Copyright 1991 by the Massachusetts Institute of Technology.
5 * All Rights Reserved.
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 * Take an ADDRPORT address and split into IP addr & port.
28 */
29
30 #include "k5-int.h"
31
32 #ifdef HAVE_NETINET_IN_H
33 #include "os-proto.h"
34
35 /*ARGSUSED*/
36 krb5_error_code
krb5_unpack_full_ipaddr(krb5_context context,const krb5_address * inaddr,krb5_int32 * adr,krb5_int16 * port)37 krb5_unpack_full_ipaddr(krb5_context context, const krb5_address *inaddr, krb5_int32 *adr, krb5_int16 *port)
38 {
39 unsigned long smushaddr;
40 unsigned short smushport;
41 register krb5_octet *marshal;
42 krb5_addrtype temptype;
43 krb5_ui_4 templength;
44
45 if (inaddr->addrtype != ADDRTYPE_ADDRPORT)
46 return KRB5_PROG_ATYPE_NOSUPP;
47
48 if (inaddr->length != sizeof(smushaddr)+ sizeof(smushport) +
49 2*sizeof(temptype) + 2*sizeof(templength))
50 return KRB5_PROG_ATYPE_NOSUPP;
51
52 marshal = inaddr->contents;
53
54 (void) memcpy((char *)&temptype, (char *)marshal, sizeof(temptype));
55 marshal += sizeof(temptype);
56 if (temptype != htons(ADDRTYPE_INET))
57 return KRB5_PROG_ATYPE_NOSUPP;
58
59 (void) memcpy((char *)&templength, (char *)marshal, sizeof(templength));
60 marshal += sizeof(templength);
61 if (templength != htonl(sizeof(smushaddr)))
62 return KRB5_PROG_ATYPE_NOSUPP;
63
64 (void) memcpy((char *)&smushaddr, (char *)marshal, sizeof(smushaddr));
65 /* leave in net order */
66 marshal += sizeof(smushaddr);
67
68 (void) memcpy((char *)&temptype, (char *)marshal, sizeof(temptype));
69 marshal += sizeof(temptype);
70 if (temptype != htons(ADDRTYPE_IPPORT))
71 return KRB5_PROG_ATYPE_NOSUPP;
72
73 (void) memcpy((char *)&templength, (char *)marshal, sizeof(templength));
74 marshal += sizeof(templength);
75 if (templength != htonl(sizeof(smushport)))
76 return KRB5_PROG_ATYPE_NOSUPP;
77
78 (void) memcpy((char *)&smushport, (char *)marshal, sizeof(smushport));
79 /* leave in net order */
80
81 *adr = (krb5_int32) smushaddr;
82 *port = (krb5_int16) smushport;
83 return 0;
84 }
85 #endif
86