1 #pragma ident	"%Z%%M%	%I%	%E% SMI"
2 /*
3  * lib/krb5/krb/addr_comp.c
4  *
5  * Copyright 1990 by the Massachusetts Institute of Technology.
6  * All Rights Reserved.
7  *
8  * Export of this software from the United States of America may
9  *   require a specific license from the United States Government.
10  *   It is the responsibility of any person or organization contemplating
11  *   export to obtain such a license before exporting.
12  *
13  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
14  * distribute this software and its documentation for any purpose and
15  * without fee is hereby granted, provided that the above copyright
16  * notice appear in all copies and that both that copyright notice and
17  * this permission notice appear in supporting documentation, and that
18  * the name of M.I.T. not be used in advertising or publicity pertaining
19  * to distribution of the software without specific, written prior
20  * permission.  Furthermore if you modify this software you must label
21  * your software as modified software and not distribute it in such a
22  * fashion that it might be confused with the original M.I.T. software.
23  * M.I.T. makes no representations about the suitability of
24  * this software for any purpose.  It is provided "as is" without express
25  * or implied warranty.
26  *
27  *
28  * krb5_address_compare()
29  */
30 
31 #include <k5-int.h>
32 
33 #ifdef KRB5_DEBUG
34 #include <sys/types.h>
35 #include <sys/socket.h>
36 #include <netinet/in.h>
37 #include <arpa/inet.h>
38 #endif
39 
40 /*
41  * If the two addresses are the same, return TRUE, else return FALSE
42  */
43 /*ARGSUSED*/
44 krb5_boolean
45 krb5_address_compare(context, addr1, addr2)
46     krb5_context context;
47     krb5_const krb5_address *addr1;
48     krb5_const krb5_address *addr2;
49 {
50     KRB5_LOG0(KRB5_INFO, "krb5_address_compare() start");
51 
52 #ifdef KRB5_DEBUG
53 {
54     char buf[256];
55     sa_family_t addr_fam;
56 
57     switch (addr1->addrtype) {
58 	case ADDRTYPE_INET:
59 	    addr_fam = AF_INET;
60 	    break;
61 	case ADDRTYPE_INET6:
62 	    addr_fam = AF_INET6;
63 	    break;
64     }
65     inet_ntop(addr_fam, addr1->contents, buf, sizeof(buf));
66     KRB5_LOG(KRB5_INFO, "krb5_address_compare() addr1=%s", buf);
67     KRB5_LOG(KRB5_INFO, "krb5_address_compare() addr1 type=%d",
68 	    addr1->addrtype);
69     KRB5_LOG(KRB5_INFO, "krb5_address_compare() addr1 length=%d",
70 	    addr1->length);
71 
72     switch (addr2->addrtype) {
73 	case ADDRTYPE_INET:
74 	    addr_fam = AF_INET;
75 	    break;
76 	case ADDRTYPE_INET6:
77 	    addr_fam = AF_INET6;
78 	    break;
79     }
80     inet_ntop(addr_fam, addr2->contents, buf, sizeof(buf));
81     KRB5_LOG(KRB5_INFO, "krb5_address_compare() addr2=%s", buf);
82     KRB5_LOG(KRB5_INFO, "krb5_address_compare() addr2 type=%d",
83 	    addr2->addrtype);
84     KRB5_LOG(KRB5_INFO, "krb5_address_compare() addr2 length=%d",
85 	    addr2->length);
86 }
87 #endif /* KRB5_DEBUG */
88 
89     if (addr1->addrtype != addr2->addrtype){
90 	KRB5_LOG0(KRB5_INFO, "krb5_address_compare() end FALSE"
91 		" (addrtype mismatch)");
92 	return(FALSE);
93     }
94 
95     if (addr1->length != addr2->length){
96 	KRB5_LOG0(KRB5_INFO, "krb5_address_compare() end FALSE"
97 		" (length mismatch)");
98 	return(FALSE);
99     }
100     if (memcmp((char *)addr1->contents, (char *)addr2->contents,
101 	       addr1->length)){
102 	KRB5_LOG0(KRB5_INFO, "krb5_address_compare() end FALSE"
103 		" (contents mismatch)");
104 	return FALSE;
105     }
106     else {
107 	KRB5_LOG0(KRB5_INFO, "krb5_address_compare() end TRUE");
108 	return TRUE;
109     }
110 }
111