1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
/* Check if two domain names are equal after trailing dot normalization.
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1995,1999 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#include <arpa/nameser.h>
#include <string.h>
/* Determines whether domain name A is the same as domain name B.
Returns -1 on error, 0 if names differ, 1 if names are the
same. */
int
__libc_ns_samename (const char *a, const char *b)
{
char ta[NS_MAXDNAME], tb[NS_MAXDNAME];
if (__libc_ns_makecanon (a, ta, sizeof ta) < 0 ||
__libc_ns_makecanon (b, tb, sizeof tb) < 0)
return -1;
if (__strcasecmp (ta, tb) == 0)
return 1;
else
return 0;
}
libc_hidden_def (__libc_ns_samename)
|
