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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 <talloc.h>
#include "lib/messaging/irpc.h"
#include "samba/service_task.h"
#include "samba/service.h"
#include "cldap_server/cldap_server.h"
#include "system/network.h"
#include "lib/socket/netif.h"
#include <ldb.h>
#include <ldb_errors.h>
#include "dsdb/samdb/samdb.h"
#include "ldb_wrap.h"
#include "auth/auth.h"
#include "param/param.h"
#include "../lib/tsocket/tsocket.h"
#include "libds/common/roles.h"
NTSTATUS server_service_cldapd_init(TALLOC_CTX *);
/*
handle incoming cldap requests
*/
static void cldapd_request_handler(struct cldap_socket *cldap,
void *private_data,
struct cldap_incoming *in)
{
struct cldapd_server *cldapd = talloc_get_type(private_data,
struct cldapd_server);
struct ldap_SearchRequest *search;
if (in->ldap_msg->type == LDAP_TAG_AbandonRequest) {
DEBUG(10,("Got (and ignoring) CLDAP AbandonRequest from %s.",
tsocket_address_string(in->src, in)));
talloc_free(in);
return;
}
if (in->ldap_msg->type != LDAP_TAG_SearchRequest) {
DEBUG(0,("Invalid CLDAP request type %d from %s\n",
in->ldap_msg->type,
tsocket_address_string(in->src, in)));
cldap_error_reply(cldap, in->ldap_msg->messageid, in->src,
LDAP_OPERATIONS_ERROR, "Invalid CLDAP request");
talloc_free(in);
return;
}
search = &in->ldap_msg->r.SearchRequest;
if (strcmp("", search->basedn) != 0) {
DEBUG(0,("Invalid CLDAP basedn '%s' from %s\n",
search->basedn,
tsocket_address_string(in->src, in)));
cldap_error_reply(cldap, in->ldap_msg->messageid, in->src,
LDAP_OPERATIONS_ERROR, "Invalid CLDAP basedn");
talloc_free(in);
return;
}
if (search->scope != LDAP_SEARCH_SCOPE_BASE) {
DEBUG(0,("Invalid CLDAP scope %d from %s\n",
search->scope,
tsocket_address_string(in->src, in)));
cldap_error_reply(cldap, in->ldap_msg->messageid, in->src,
LDAP_OPERATIONS_ERROR, "Invalid CLDAP scope");
talloc_free(in);
return;
}
cldapd_rootdse_request(cldap, cldapd, in,
in->ldap_msg->messageid,
search, in->src);
talloc_free(in);
}
/*
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 tsocket_address *socket_address;
NTSTATUS status;
int ret;
ret = tsocket_address_inet_from_strings(cldapd,
"ip",
address,
lpcfg_cldap_port(lp_ctx),
&socket_address);
if (ret != 0) {
status = map_nt_error_from_unix_common(errno);
DEBUG(0,("invalid address %s:%d - %s:%s\n",
address, lpcfg_cldap_port(lp_ctx),
gai_strerror(ret), nt_errstr(status)));
return status;
}
/* listen for unicasts on the CLDAP port (389) */
status = cldap_socket_init(cldapd,
socket_address,
NULL,
&cldapsock);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("Failed to bind to %s - %s\n",
tsocket_address_string(socket_address, socket_address),
nt_errstr(status)));
talloc_free(socket_address);
return status;
}
talloc_free(socket_address);
cldap_set_incoming_handler(cldapsock, cldapd->task->event_ctx,
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,
struct interface *ifaces)
{
int i, num_interfaces;
TALLOC_CTX *tmp_ctx = talloc_new(cldapd);
NTSTATUS status;
num_interfaces = iface_list_count(ifaces);
/* if we are allowing incoming packets from any address, then
we need to bind to the wildcard address */
if (!lpcfg_bind_interfaces_only(lp_ctx)) {
size_t num_binds = 0;
char **wcard = iface_list_wildcard(cldapd);
NT_STATUS_HAVE_NO_MEMORY(wcard);
for (i=0; wcard[i]; i++) {
status = cldapd_add_socket(cldapd, lp_ctx, wcard[i]);
if (NT_STATUS_IS_OK(status)) {
num_binds++;
}
}
talloc_free(wcard);
if (num_binds == 0) {
return NT_STATUS_INVALID_PARAMETER_MIX;
}
}
/* now we have to also listen on the specific interfaces,
so that replies always come from the right IP */
for (i=0; i<num_interfaces; i++) {
const char *address = talloc_strdup(tmp_ctx, iface_list_n_ip(ifaces, 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 NTSTATUS cldapd_task_init(struct task_server *task)
{
struct cldapd_server *cldapd;
NTSTATUS status;
struct interface *ifaces;
load_interface_list(task, task->lp_ctx, &ifaces);
if (iface_list_count(ifaces) == 0) {
task_server_terminate(task, "cldapd: no network interfaces configured", false);
return NT_STATUS_UNSUCCESSFUL;
}
switch (lpcfg_server_role(task->lp_ctx)) {
case ROLE_STANDALONE:
task_server_terminate(task, "cldap_server: no CLDAP server required in standalone configuration",
false);
return NT_STATUS_INVALID_DOMAIN_ROLE;
case ROLE_DOMAIN_MEMBER:
task_server_terminate(task, "cldap_server: no CLDAP server required in member server configuration",
false);
return NT_STATUS_INVALID_DOMAIN_ROLE;
case ROLE_ACTIVE_DIRECTORY_DC:
/* 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", true);
return NT_STATUS_NO_MEMORY;
}
cldapd->task = task;
cldapd->samctx = samdb_connect(cldapd,
task->event_ctx,
task->lp_ctx,
system_session(task->lp_ctx),
NULL,
0);
if (cldapd->samctx == NULL) {
task_server_terminate(task, "cldapd failed to open samdb", true);
return NT_STATUS_UNSUCCESSFUL;
}
/* start listening on the configured network interfaces */
status = cldapd_startup_interfaces(cldapd, task->lp_ctx, ifaces);
if (!NT_STATUS_IS_OK(status)) {
task_server_terminate(task, "cldapd failed to setup interfaces", true);
return status;
}
irpc_add_name(task->msg_ctx, "cldap_server");
return NT_STATUS_OK;
}
/*
register ourselves as a available server
*/
NTSTATUS server_service_cldapd_init(TALLOC_CTX *ctx)
{
static const struct service_details details = {
.inhibit_fork_on_accept = true,
.inhibit_pre_fork = true,
.task_init = cldapd_task_init,
.post_fork = NULL
};
return register_server_service(ctx, "cldap", &details);
}
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