47ba625daa
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@2549 ec53bebd-3082-4978-b11e-865c3cabbd6b
133 lines
3.8 KiB
C
133 lines
3.8 KiB
C
/*
|
|
* Copyright (c) 1997 Kungliga Tekniska Högskolan
|
|
* (Royal Institute of Technology, Stockholm, Sweden).
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Kungliga Tekniska
|
|
* Högskolan and its contributors.
|
|
*
|
|
* 4. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "krb5_locl.h"
|
|
#include "config_file.h"
|
|
|
|
RCSID("$Id$");
|
|
|
|
static int
|
|
exact_match (const char *s, const char *pattern)
|
|
{
|
|
return strcasecmp (s, pattern) == 0;
|
|
}
|
|
|
|
static int
|
|
domain_match (const char *s, const char *pattern)
|
|
{
|
|
const char *dot = strchr (s, '.');
|
|
|
|
return dot && strcasecmp (dot, pattern) == 0;
|
|
}
|
|
|
|
krb5_error_code
|
|
krb5_get_host_realm(krb5_context context,
|
|
const char *host,
|
|
char ***realms)
|
|
{
|
|
krb5_error_code ret;
|
|
char hostname[MAXHOSTNAMELEN];
|
|
char *res = NULL;
|
|
const char *partial = NULL;
|
|
const krb5_config_binding *l;
|
|
struct in_addr addr;
|
|
struct hostent *hostent;
|
|
|
|
if (host == NULL) {
|
|
if (gethostname (hostname, sizeof(hostname)))
|
|
return errno;
|
|
host = hostname;
|
|
}
|
|
|
|
addr.s_addr = inet_addr(host);
|
|
hostent = gethostbyname (host);
|
|
if (hostent == NULL && addr.s_addr != INADDR_NONE)
|
|
hostent = gethostbyaddr ((const char *)&addr, sizeof(addr), AF_INET);
|
|
if (hostent != NULL)
|
|
host = hostent->h_name;
|
|
|
|
*realms = malloc(2 * sizeof(char*));
|
|
if (*realms == NULL)
|
|
return ENOMEM;
|
|
(*realms)[0] = NULL;
|
|
(*realms)[1] = NULL;
|
|
|
|
for(l = krb5_config_get_list (context->cf,
|
|
"domain_realm",
|
|
NULL);
|
|
l;
|
|
l = l->next) {
|
|
if (l->type != STRING)
|
|
continue;
|
|
if (exact_match (host, l->name)) {
|
|
res = l->u.string;
|
|
break;
|
|
} else if (domain_match (host, l->name)) {
|
|
res = l->u.string;
|
|
}
|
|
}
|
|
|
|
if (res) {
|
|
(*realms)[0] = strdup(res);
|
|
if ((*realms)[0] == NULL) {
|
|
free (*realms);
|
|
return ENOMEM;
|
|
}
|
|
} else {
|
|
const char *dot = strchr (host, '.');
|
|
|
|
if (dot != NULL) {
|
|
(*realms)[0] = strdup (dot + 1);
|
|
if ((*realms)[0] == NULL) {
|
|
free (*realms);
|
|
return ENOMEM;
|
|
}
|
|
strupr ((*realms)[0]);
|
|
} else {
|
|
ret = krb5_get_default_realm (context, *realms);
|
|
if (ret) {
|
|
free (*realms);
|
|
*realms = NULL;
|
|
return KRB5_ERR_HOST_REALM_UNKNOWN;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|