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/*
Unix SMB/CIFS implementation.
CLDAP server task
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 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/ldap/ldap.h"
#include "lib/socket/socket.h"
#include "lib/messaging/irpc.h"
#include "smbd/service_task.h"
#include "smbd/service.h"
#include "cldap_server/cldap_server.h"
#include "system/network.h"
#include "lib/socket/netif.h"
#include "lib/ldb/include/ldb.h"
#include "lib/ldb/include/ldb_errors.h"
#include "dsdb/samdb/samdb.h"
#include "ldb_wrap.h"
#include "auth/auth.h"
#include "param/param.h"
/*
handle incoming cldap requests
*/
static void cldapd_request_handler(struct cldap_socket *cldap,
struct ldap_message *ldap_msg,
struct socket_address *src)
{
struct ldap_SearchRequest *search;
if (ldap_msg->type != LDAP_TAG_SearchRequest) {
DEBUG(0,("Invalid CLDAP request type %d from %s:%d\n",
ldap_msg->type, src->addr, src->port));
cldap_error_reply(cldap, ldap_msg->messageid, src,
LDAP_OPERATIONS_ERROR, "Invalid CLDAP request");
return;
}
search = &ldap_msg->r.SearchRequest;
if (strcmp("", search->basedn) != 0) {
DEBUG(0,("Invalid CLDAP basedn '%s' from %s:%d\n",
search->basedn, src->addr, src->port));
cldap_error_reply(cldap, ldap_msg->messageid, src,
LDAP_OPERATIONS_ERROR, "Invalid CLDAP basedn");
return;
}
if (search->scope != LDAP_SEARCH_SCOPE_BASE) {
DEBUG(0,("Invalid CLDAP scope %d from %s:%d\n",
search->scope, src->addr, src->port));
cldap_error_reply(cldap, ldap_msg->messageid, src,
LDAP_OPERATIONS_ERROR, "Invalid CLDAP scope");
return;
}
if (search->num_attributes == 1 &&
strcasecmp(search->attributes[0], "netlogon") == 0) {
cldapd_netlogon_request(cldap, ldap_msg->messageid,
search->tree, src);
return;
}
cldapd_rootdse_request(cldap, ldap_msg->messageid,
search, src);
}
/*
start listening on the given address
*/
static NTSTATUS cldapd_add_socket(struct cldapd_server *cldapd, struct loadparm_context *lp_ctx,
const char *address)
{
struct cldap_socket *cldapsock;
struct socket_address *socket_address;
NTSTATUS status;
/* listen for unicasts on the CLDAP port (389) */
cldapsock = cldap_socket_init(cldapd, cldapd->task->event_ctx);
NT_STATUS_HAVE_NO_MEMORY(cldapsock);
socket_address = socket_address_from_strings(cldapsock, cldapsock->sock->backend_name,
address, lp_cldap_port(lp_ctx));
if (!socket_address) {
talloc_free(cldapsock);
return NT_STATUS_NO_MEMORY;
}
status = socket_listen(cldapsock->sock, socket_address, 0, 0);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("Failed to bind to %s:%d - %s\n",
address, lp_cldap_port(lp_ctx), nt_errstr(status)));
talloc_free(cldapsock);
return status;
}
talloc_free(socket_address);
cldap_set_incoming_handler(cldapsock, cldapd_request_handler, cldapd);
return NT_STATUS_OK;
}
/*
setup our listening sockets on the configured network interfaces
*/
static NTSTATUS cldapd_startup_interfaces(struct cldapd_server *cldapd, struct loadparm_context *lp_ctx)
{
int num_interfaces = iface_count();
TALLOC_CTX *tmp_ctx = talloc_new(cldapd);
NTSTATUS status;
/* if we are allowing incoming packets from any address, then
we need to bind to the wildcard address */
if (!lp_bind_interfaces_only(lp_ctx)) {
status = cldapd_add_socket(cldapd, lp_ctx, "0.0.0.0");
NT_STATUS_NOT_OK_RETURN(status);
} else {
int i;
for (i=0; i<num_interfaces; i++) {
const char *address = talloc_strdup(tmp_ctx, iface_n_ip(i));
status = cldapd_add_socket(cldapd, lp_ctx, address);
NT_STATUS_NOT_OK_RETURN(status);
}
}
talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
/*
startup the cldapd task
*/
static void cldapd_task_init(struct task_server *task)
{
struct cldapd_server *cldapd;
NTSTATUS status;
if (iface_count() == 0) {
task_server_terminate(task, "cldapd: no network interfaces configured");
return;
}
switch (lp_server_role(task->lp_ctx)) {
case ROLE_STANDALONE:
task_server_terminate(task, "cldap_server: no CLDAP server required in standalone configuration");
return;
case ROLE_DOMAIN_MEMBER:
task_server_terminate(task, "cldap_server: no CLDAP server required in member server configuration");
return;
case ROLE_DOMAIN_CONTROLLER:
/* Yes, we want an CLDAP server */
break;
}
task_server_set_title(task, "task[cldapd]");
cldapd = talloc(task, struct cldapd_server);
if (cldapd == NULL) {
task_server_terminate(task, "cldapd: out of memory");
return;
}
cldapd->task = task;
cldapd->samctx = samdb_connect(cldapd, task->lp_ctx, anonymous_session(cldapd));
if (cldapd->samctx == NULL) {
task_server_terminate(task, "cldapd failed to open samdb");
return;
}
/* start listening on the configured network interfaces */
status = cldapd_startup_interfaces(cldapd, task->lp_ctx);
if (!NT_STATUS_IS_OK(status)) {
task_server_terminate(task, "cldapd failed to setup interfaces");
return;
}
irpc_add_name(task->msg_ctx, "cldap_server");
}
/*
initialise the cldapd server
*/
static NTSTATUS cldapd_init(struct event_context *event_ctx, struct loadparm_context *lp_ctx, const struct model_ops *model_ops)
{
return task_server_startup(event_ctx, model_ops, cldapd_task_init);
}
/*
register ourselves as a available server
*/
NTSTATUS server_service_cldapd_init(void)
{
return register_server_service("cldap", cldapd_init);
}
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