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/*
Unix SMB/CIFS implementation.
CLDAP server - netlogon handling
Copyright (C) Andrew Tridgell 2005
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "libcli/ldap/ldap.h"
#include "lib/events/events.h"
#include "lib/socket/socket.h"
#include "smbd/service_task.h"
#include "cldap_server/cldap_server.h"
/*
fill in the cldap netlogon union for a given version
*/
static NTSTATUS cldapd_netlogon_fill(struct cldap_socket *cldap,
TALLOC_CTX *mem_ctx,
const char *domain,
const char *domain_guid,
const char *user,
const char *src_address,
uint32_t version,
union nbt_cldap_netlogon *netlogon)
{
struct ldb_context *samctx;
const char *attrs[] = {"realm", "dnsDomain", "objectGUID", "name", NULL};
struct ldb_message **res;
int ret;
const char **services = lp_server_services();
uint32_t server_type;
const char *pdc_name;
struct GUID domain_uuid;
const char *realm;
const char *dns_domain;
const char *pdc_dns_name;
const char *flatname;
const char *site_name;
const char *site_name2;
const char *pdc_ip;
samctx = samdb_connect(mem_ctx);
if (samctx == NULL) {
DEBUG(2,("Unable to open sam in cldap netlogon reply\n"));
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
/* the domain has an optional trailing . */
if (domain && domain[strlen(domain)-1] == '.') {
domain = talloc_strndup(mem_ctx, domain, strlen(domain)-1);
}
/* try and find the domain */
ret = gendb_search(samctx, samctx, NULL, &res, attrs,
"(&(objectClass=domainDNS)(|(dnsDomain=%s)(objectGUID=%s)))",
domain?domain:"",
domain_guid?domain_guid:"");
if (ret != 1) {
DEBUG(2,("Unable to find domain '%s' in sam\n", domain));
return NT_STATUS_NO_SUCH_DOMAIN;
}
server_type =
NBT_SERVER_PDC | NBT_SERVER_GC |
NBT_SERVER_DS | NBT_SERVER_TIMESERV |
NBT_SERVER_CLOSEST | NBT_SERVER_WRITABLE |
NBT_SERVER_GOOD_TIMESERV;
if (lp_parm_bool(-1, "gensec", "krb5", True)) {
server_type |= NBT_SERVER_KDC;
}
if (str_list_check(services, "ldap")) {
server_type |= NBT_SERVER_LDAP;
}
pdc_name = talloc_asprintf(mem_ctx, "\\\\%s", lp_netbios_name());
domain_uuid = samdb_result_guid(res[0], "objectGUID");
realm = samdb_result_string(res[0], "realm", lp_realm());
dns_domain = samdb_result_string(res[0], "dnsDomain", lp_realm());
pdc_dns_name = talloc_asprintf(mem_ctx, "%s.%s",
lp_netbios_name(), dns_domain);
flatname = samdb_result_string(res[0], "name", lp_workgroup());
site_name = "Default-First-Site-Name";
site_name2 = "";
pdc_ip = iface_best_ip(src_address);
ZERO_STRUCTP(netlogon);
switch (version & 0xF) {
case 0:
case 1:
netlogon->logon1.pdc_name = pdc_name;
netlogon->logon1.user_name = user;
netlogon->logon1.domain_name = flatname;
netlogon->logon1.nt_version = 1;
netlogon->logon1.lmnt_token = 0xFFFF;
netlogon->logon1.lm20_token = 0xFFFF;
break;
case 2:
case 3:
netlogon->logon2.pdc_name = pdc_name;
netlogon->logon2.user_name = user;
netlogon->logon2.domain_name = flatname;
netlogon->logon2.domain_uuid = domain_uuid;
netlogon->logon2.forest = realm;
netlogon->logon2.dns_domain = dns_domain;
netlogon->logon2.pdc_dns_name = pdc_dns_name;
netlogon->logon2.pdc_ip = pdc_ip;
netlogon->logon2.server_type = server_type;
netlogon->logon2.nt_version = 3;
netlogon->logon2.lmnt_token = 0xFFFF;
netlogon->logon2.lm20_token = 0xFFFF;
break;
case 4:
case 5:
case 6:
case 7:
netlogon->logon3.server_type = server_type;
netlogon->logon3.domain_uuid = domain_uuid;
netlogon->logon3.forest = realm;
netlogon->logon3.dns_domain = dns_domain;
netlogon->logon3.pdc_dns_name = pdc_dns_name;
netlogon->logon3.domain = flatname;
netlogon->logon3.pdc_name = pdc_name;
netlogon->logon3.user_name = user;
netlogon->logon3.site_name = site_name;
netlogon->logon3.site_name2 = site_name2;
netlogon->logon3.nt_version = 3;
netlogon->logon3.lmnt_token = 0xFFFF;
netlogon->logon3.lm20_token = 0xFFFF;
break;
default:
netlogon->logon4.server_type = server_type;
netlogon->logon4.domain_uuid = domain_uuid;
netlogon->logon4.forest = realm;
netlogon->logon4.dns_domain = dns_domain;
netlogon->logon4.pdc_dns_name = pdc_dns_name;
netlogon->logon4.domain = flatname;
netlogon->logon4.pdc_name = lp_netbios_name();
netlogon->logon4.user_name = user;
netlogon->logon4.site_name = site_name;
netlogon->logon4.site_name2 = site_name2;
netlogon->logon4.unknown = 10;
netlogon->logon4.unknown2 = 2;
netlogon->logon4.pdc_ip = pdc_ip;
netlogon->logon4.nt_version = 5;
netlogon->logon4.lmnt_token = 0xFFFF;
netlogon->logon4.lm20_token = 0xFFFF;
break;
}
return NT_STATUS_OK;
}
/*
handle incoming cldap requests
*/
void cldapd_netlogon_request(struct cldap_socket *cldap,
uint32_t message_id,
const char *filter,
const char *src_address, int src_port)
{
struct ldap_parse_tree *tree;
int i;
const char *domain = NULL;
const char *host = NULL;
const char *user = "";
const char *domain_guid = NULL;
const char *domain_sid = NULL;
int acct_control = -1;
int version = -1;
union nbt_cldap_netlogon netlogon;
NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
TALLOC_CTX *tmp_ctx = talloc_new(cldap);
DEBUG(0,("cldap filter='%s'\n", filter));
tree = ldap_parse_filter_string(tmp_ctx, filter);
if (tree == NULL) goto failed;
if (tree->operation != LDAP_OP_AND) goto failed;
/* extract the query elements */
for (i=0;i<tree->u.list.num_elements;i++) {
struct ldap_parse_tree *t = tree->u.list.elements[i];
if (t->operation != LDAP_OP_SIMPLE) goto failed;
if (strcasecmp(t->u.simple.attr, "DnsDomain") == 0) {
domain = talloc_strndup(tmp_ctx,
t->u.simple.value.data,
t->u.simple.value.length);
}
if (strcasecmp(t->u.simple.attr, "Host") == 0) {
host = talloc_strndup(tmp_ctx,
t->u.simple.value.data,
t->u.simple.value.length);
}
if (strcasecmp(t->u.simple.attr, "DomainGuid") == 0) {
NTSTATUS enc_status;
struct GUID guid;
enc_status = ldap_decode_ndr_GUID(tmp_ctx,
t->u.simple.value, &guid);
if (NT_STATUS_IS_OK(enc_status)) {
domain_guid = GUID_string(tmp_ctx, &guid);
}
}
if (strcasecmp(t->u.simple.attr, "DomainSid") == 0) {
domain_sid = talloc_strndup(tmp_ctx,
t->u.simple.value.data,
t->u.simple.value.length);
}
if (strcasecmp(t->u.simple.attr, "User") == 0) {
user = talloc_strndup(tmp_ctx,
t->u.simple.value.data,
t->u.simple.value.length);
}
if (strcasecmp(t->u.simple.attr, "NtVer") == 0 &&
t->u.simple.value.length == 4) {
version = IVAL(t->u.simple.value.data, 0);
}
if (strcasecmp(t->u.simple.attr, "AAC") == 0 &&
t->u.simple.value.length == 4) {
acct_control = IVAL(t->u.simple.value.data, 0);
}
}
if (domain_guid == NULL && domain == NULL) {
domain = lp_realm();
}
if (version == -1) {
goto failed;
}
DEBUG(0,("cldap netlogon query domain=%s host=%s user=%s version=%d guid=%s\n",
domain, host, user, version, domain_guid));
status = cldapd_netlogon_fill(cldap, tmp_ctx, domain, domain_guid,
user, src_address,
version, &netlogon);
if (!NT_STATUS_IS_OK(status)) {
goto failed;
}
status = cldap_netlogon_reply(cldap, message_id, src_address, src_port, version,
&netlogon);
if (!NT_STATUS_IS_OK(status)) {
goto failed;
}
talloc_free(tmp_ctx);
return;
failed:
DEBUG(0,("cldap netlogon query failed domain=%s host=%s version=%d - %s\n",
domain, host, version, nt_errstr(status)));
talloc_free(tmp_ctx);
cldap_empty_reply(cldap, message_id, src_address, src_port);
}
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