mirror of
https://github.com/samba-team/samba.git
synced 2024-12-25 23:21:54 +03:00
152 lines
3.6 KiB
C
152 lines
3.6 KiB
C
/*
|
|
Unix SMB/CIFS implementation.
|
|
|
|
DNS server utils
|
|
|
|
Copyright (C) 2010 Kai Blin <kai@samba.org>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "includes.h"
|
|
#include "libcli/util/ntstatus.h"
|
|
#include "libcli/util/werror.h"
|
|
#include "librpc/ndr/libndr.h"
|
|
#include "librpc/gen_ndr/ndr_dns.h"
|
|
#include "librpc/gen_ndr/ndr_dnsp.h"
|
|
#include <ldb.h>
|
|
#include "dsdb/samdb/samdb.h"
|
|
#include "dsdb/common/util.h"
|
|
#include "dns_server/dns_server.h"
|
|
|
|
uint8_t werr_to_dns_err(WERROR werr)
|
|
{
|
|
if (W_ERROR_EQUAL(WERR_OK, werr)) {
|
|
return DNS_RCODE_OK;
|
|
} else if (W_ERROR_EQUAL(DNS_ERR(FORMAT_ERROR), werr)) {
|
|
return DNS_RCODE_FORMERR;
|
|
} else if (W_ERROR_EQUAL(DNS_ERR(SERVER_FAILURE), werr)) {
|
|
return DNS_RCODE_SERVFAIL;
|
|
} else if (W_ERROR_EQUAL(DNS_ERR(NAME_ERROR), werr)) {
|
|
return DNS_RCODE_NXDOMAIN;
|
|
} else if (W_ERROR_EQUAL(DNS_ERR(NOT_IMPLEMENTED), werr)) {
|
|
return DNS_RCODE_NOTIMP;
|
|
} else if (W_ERROR_EQUAL(DNS_ERR(REFUSED), werr)) {
|
|
return DNS_RCODE_REFUSED;
|
|
} else if (W_ERROR_EQUAL(DNS_ERR(YXDOMAIN), werr)) {
|
|
return DNS_RCODE_YXDOMAIN;
|
|
} else if (W_ERROR_EQUAL(DNS_ERR(YXRRSET), werr)) {
|
|
return DNS_RCODE_YXRRSET;
|
|
} else if (W_ERROR_EQUAL(DNS_ERR(NXRRSET), werr)) {
|
|
return DNS_RCODE_NXRRSET;
|
|
} else if (W_ERROR_EQUAL(DNS_ERR(NOTAUTH), werr)) {
|
|
return DNS_RCODE_NOTAUTH;
|
|
} else if (W_ERROR_EQUAL(DNS_ERR(NOTZONE), werr)) {
|
|
return DNS_RCODE_NOTZONE;
|
|
}
|
|
DEBUG(5, ("No mapping exists for %%s\n"));
|
|
return DNS_RCODE_SERVFAIL;
|
|
}
|
|
|
|
bool dns_name_match(const char *zone, const char *name, size_t *host_part_len)
|
|
{
|
|
size_t zl = strlen(zone);
|
|
size_t nl = strlen(name);
|
|
ssize_t zi, ni;
|
|
static const size_t fixup = 'a' - 'A';
|
|
|
|
if (zl > nl) {
|
|
return false;
|
|
}
|
|
|
|
for (zi = zl, ni = nl; zi >= 0; zi--, ni--) {
|
|
char zc = zone[zi];
|
|
char nc = name[ni];
|
|
|
|
/* convert to lower case */
|
|
if (zc >= 'A' && zc <= 'Z') {
|
|
zc += fixup;
|
|
}
|
|
if (nc >= 'A' && nc <= 'Z') {
|
|
nc += fixup;
|
|
}
|
|
|
|
if (zc != nc) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (ni >= 0) {
|
|
if (name[ni] != '.') {
|
|
return false;
|
|
}
|
|
|
|
ni--;
|
|
}
|
|
|
|
*host_part_len = ni+1;
|
|
|
|
return true;
|
|
}
|
|
|
|
WERROR dns_name2dn(struct dns_server *dns,
|
|
TALLOC_CTX *mem_ctx,
|
|
const char *name,
|
|
struct ldb_dn **_dn)
|
|
{
|
|
struct ldb_dn *base;
|
|
struct ldb_dn *dn;
|
|
const struct dns_server_zone *z;
|
|
size_t host_part_len = 0;
|
|
|
|
if (name == NULL) {
|
|
return DNS_ERR(FORMAT_ERROR);
|
|
}
|
|
|
|
/*TODO: Check if 'name' is a valid DNS name */
|
|
|
|
if (strcmp(name, "") == 0) {
|
|
base = ldb_get_default_basedn(dns->samdb);
|
|
dn = ldb_dn_copy(mem_ctx, base);
|
|
ldb_dn_add_child_fmt(dn, "DC=@,DC=RootDNSServers,CN=MicrosoftDNS,CN=System");
|
|
*_dn = dn;
|
|
return WERR_OK;
|
|
}
|
|
|
|
for (z = dns->zones; z != NULL; z = z->next) {
|
|
bool match;
|
|
|
|
match = dns_name_match(z->name, name, &host_part_len);
|
|
if (match) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (z == NULL) {
|
|
return DNS_ERR(NAME_ERROR);
|
|
}
|
|
|
|
if (host_part_len == 0) {
|
|
dn = ldb_dn_copy(mem_ctx, z->dn);
|
|
ldb_dn_add_child_fmt(dn, "DC=@");
|
|
*_dn = dn;
|
|
return WERR_OK;
|
|
}
|
|
|
|
dn = ldb_dn_copy(mem_ctx, z->dn);
|
|
ldb_dn_add_child_fmt(dn, "DC=%*.*s", (int)host_part_len, (int)host_part_len, name);
|
|
*_dn = dn;
|
|
return WERR_OK;
|
|
}
|