#include "lib/events/events.h"
#include "auth/auth.h"
#include "dlinklist.h"
-#include "asn_1.h"
+#include "libcli/util/asn_1.h"
#include "ldap_server/ldap_server.h"
#include "smbd/service_task.h"
#include "smbd/service_stream.h"
-#include "lib/socket/socket.h"
+#include "smbd/service.h"
#include "lib/tls/tls.h"
#include "lib/messaging/irpc.h"
-#include "lib/stream/packet.h"
+#include "lib/ldb/include/ldb.h"
+#include "lib/ldb/include/ldb_errors.h"
+#include "system/network.h"
+#include "lib/socket/netif.h"
/*
close the socket and shutdown a server_context
*/
-static void ldapsrv_terminate_connection(struct ldapsrv_connection *conn,
+void ldapsrv_terminate_connection(struct ldapsrv_connection *conn,
const char *reason)
{
- if (conn->tls) {
- talloc_free(conn->tls);
- conn->tls = NULL;
- }
stream_terminate_connection(conn->connection, reason);
}
struct ldapsrv_call *call;
NTSTATUS status;
DATA_BLOB blob;
- BOOL enable_wrap = conn->enable_wrap;
call = talloc(conn, struct ldapsrv_call);
if (!call) {
call->request = talloc_steal(call, msg);
call->conn = conn;
call->replies = NULL;
-
+ call->send_callback = NULL;
+ call->send_private = NULL;
+
/* make the call */
status = ldapsrv_do_call(call);
if (!NT_STATUS_IS_OK(status)) {
- goto failed;
+ talloc_free(call);
+ return;
}
blob = data_blob(NULL, 0);
msg = call->replies->msg;
if (!ldap_encode(msg, &b, call)) {
DEBUG(0,("Failed to encode ldap reply of type %d\n", msg->type));
- goto failed;
+ talloc_free(call);
+ return;
}
status = data_blob_append(call, &blob, b.data, b.length);
data_blob_free(&b);
- if (!NT_STATUS_IS_OK(status)) goto failed;
+ talloc_set_name_const(blob.data, "Outgoing, encoded LDAP packet");
- DLIST_REMOVE(call->replies, call->replies);
- }
-
- /* possibly encrypt/sign the reply */
- if (enable_wrap) {
- DATA_BLOB wrapped;
-
- status = gensec_wrap(conn->gensec, call, &blob, &wrapped);
if (!NT_STATUS_IS_OK(status)) {
- goto failed;
+ talloc_free(call);
+ return;
}
- data_blob_free(&blob);
- blob = data_blob_talloc(call, NULL, wrapped.length + 4);
- if (blob.data == NULL) {
- goto failed;
- }
- RSIVAL(blob.data, 0, wrapped.length);
- memcpy(blob.data+4, wrapped.data, wrapped.length);
- data_blob_free(&wrapped);
+
+ DLIST_REMOVE(call->replies, call->replies);
}
- packet_send(conn->packet, blob);
+ packet_send_callback(conn->packet, blob,
+ call->send_callback, call->send_private);
talloc_free(call);
return;
-
-failed:
- talloc_free(call);
}
-
/*
- decode the input buffer
+ decode/process data
*/
-static NTSTATUS ldapsrv_decode_plain(struct ldapsrv_connection *conn, DATA_BLOB blob)
+static NTSTATUS ldapsrv_decode(void *private, DATA_BLOB blob)
{
+ struct ldapsrv_connection *conn = talloc_get_type(private,
+ struct ldapsrv_connection);
struct asn1_data asn1;
struct ldap_message *msg = talloc(conn, struct ldap_message);
return NT_STATUS_OK;
}
-
/*
- decode/process wrapped data
+ Idle timeout handler
*/
-static NTSTATUS ldapsrv_decode_wrapped(struct ldapsrv_connection *conn,
- DATA_BLOB blob)
+static void ldapsrv_conn_idle_timeout(struct event_context *ev,
+ struct timed_event *te,
+ struct timeval t,
+ void *private)
{
- DATA_BLOB wrapped, unwrapped;
- struct asn1_data asn1;
- struct ldap_message *msg = talloc(conn, struct ldap_message);
- NTSTATUS status;
+ struct ldapsrv_connection *conn = talloc_get_type(private, struct ldapsrv_connection);
- if (msg == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
-
- wrapped = data_blob_const(blob.data+4, blob.length-4);
-
- status = gensec_unwrap(conn->gensec, msg, &wrapped, &unwrapped);
- if (!NT_STATUS_IS_OK(status)) {
- return NT_STATUS_LDAP(LDAP_PROTOCOL_ERROR);
- }
-
- data_blob_free(&blob);
-
- if (!asn1_load(&asn1, unwrapped)) {
- return NT_STATUS_LDAP(LDAP_PROTOCOL_ERROR);
- }
-
- while (ldap_decode(&asn1, msg)) {
- ldapsrv_process_message(conn, msg);
- msg = talloc(conn, struct ldap_message);
- }
-
- if (asn1.ofs < asn1.length) {
- return NT_STATUS_LDAP(LDAP_PROTOCOL_ERROR);
- }
-
- talloc_free(msg);
- asn1_free(&asn1);
-
- return NT_STATUS_OK;
-}
-
-/*
- decode/process data
-*/
-static NTSTATUS ldapsrv_decode(void *private, DATA_BLOB blob)
-{
- struct ldapsrv_connection *conn = talloc_get_type(private,
- struct ldapsrv_connection);
- if (conn->enable_wrap) {
- return ldapsrv_decode_wrapped(conn, blob);
- }
- return ldapsrv_decode_plain(conn, blob);
+ ldapsrv_terminate_connection(conn, "Timeout. No requests after bind");
}
/*
called when a LDAP socket becomes readable
*/
-static void ldapsrv_recv(struct stream_connection *c, uint16_t flags)
+void ldapsrv_recv(struct stream_connection *c, uint16_t flags)
{
struct ldapsrv_connection *conn =
talloc_get_type(c->private, struct ldapsrv_connection);
-
- packet_recv(conn->packet);
-}
-/*
- check if a blob is a complete ldap packet
- handle wrapper or unwrapped connections
-*/
-NTSTATUS ldapsrv_complete_packet(void *private, DATA_BLOB blob, size_t *size)
-{
- struct ldapsrv_connection *conn = talloc_get_type(private,
- struct ldapsrv_connection);
- if (conn->enable_wrap) {
- return packet_full_request_u32(private, blob, size);
+ if (conn->limits.ite) { /* clean initial timeout if any */
+ talloc_free(conn->limits.ite);
+ conn->limits.ite = NULL;
}
- return ldap_full_packet(private, blob, size);
+
+ if (conn->limits.te) { /* clean idle timeout if any */
+ talloc_free(conn->limits.te);
+ conn->limits.te = NULL;
+ }
+
+ packet_recv(conn->packet);
+
+ /* set idle timeout */
+ conn->limits.te = event_add_timed(c->event.ctx, conn,
+ timeval_current_ofs(conn->limits.conn_idle_time, 0),
+ ldapsrv_conn_idle_timeout, conn);
}
-
+
/*
called when a LDAP socket becomes writable
*/
packet_queue_run(conn->packet);
}
+static void ldapsrv_conn_init_timeout(struct event_context *ev,
+ struct timed_event *te,
+ struct timeval t,
+ void *private)
+{
+ struct ldapsrv_connection *conn = talloc_get_type(private, struct ldapsrv_connection);
+
+ ldapsrv_terminate_connection(conn, "Timeout. No requests after initial connection");
+}
+
+static int ldapsrv_load_limits(struct ldapsrv_connection *conn)
+{
+ TALLOC_CTX *tmp_ctx;
+ const char *attrs[] = { "configurationNamingContext", NULL };
+ const char *attrs2[] = { "lDAPAdminLimits", NULL };
+ const char *conf_dn_s;
+ struct ldb_message_element *el;
+ struct ldb_result *res = NULL;
+ struct ldb_dn *basedn;
+ struct ldb_dn *conf_dn;
+ struct ldb_dn *policy_dn;
+ int i,ret;
+
+ /* set defaults limits in case of failure */
+ conn->limits.initial_timeout = 120;
+ conn->limits.conn_idle_time = 900;
+ conn->limits.max_page_size = 1000;
+ conn->limits.search_timeout = 120;
+
+
+ tmp_ctx = talloc_new(conn);
+ if (tmp_ctx == NULL) {
+ return -1;
+ }
+
+ basedn = ldb_dn_explode(tmp_ctx, "");
+ if (basedn == NULL) {
+ goto failed;
+ }
+
+ ret = ldb_search(conn->ldb, basedn, LDB_SCOPE_BASE, NULL, attrs, &res);
+ talloc_steal(tmp_ctx, res);
+ if (ret != LDB_SUCCESS || res->count != 1) {
+ goto failed;
+ }
+
+ conf_dn_s = ldb_msg_find_attr_as_string(res->msgs[0], "configurationNamingContext", NULL);
+ if (conf_dn_s == NULL) {
+ goto failed;
+ }
+ conf_dn = ldb_dn_explode(tmp_ctx, conf_dn_s);
+ if (conf_dn == NULL) {
+ goto failed;
+ }
+
+ policy_dn = ldb_dn_string_compose(tmp_ctx, conf_dn, "CN=Default Query Policy,CN=Query-Policies,CN=Directory Service,CN=Windows NT,CN=Services");
+ if (policy_dn == NULL) {
+ goto failed;
+ }
+
+ ret = ldb_search(conn->ldb, policy_dn, LDB_SCOPE_BASE, NULL, attrs2, &res);
+ talloc_steal(tmp_ctx, res);
+ if (ret != LDB_SUCCESS || res->count != 1) {
+ goto failed;
+ }
+
+ el = ldb_msg_find_element(res->msgs[0], "lDAPAdminLimits");
+ if (el == NULL) {
+ goto failed;
+ }
+
+ for (i = 0; i < el->num_values; i++) {
+ char policy_name[256];
+ int policy_value, s;
+
+ s = sscanf((const char *)el->values[i].data, "%255[^=]=%d", policy_name, &policy_value);
+ if (ret != 2 || policy_value == 0)
+ continue;
+
+ if (strcasecmp("InitRecvTimeout", policy_name) == 0) {
+ conn->limits.initial_timeout = policy_value;
+ continue;
+ }
+ if (strcasecmp("MaxConnIdleTime", policy_name) == 0) {
+ conn->limits.conn_idle_time = policy_value;
+ continue;
+ }
+ if (strcasecmp("MaxPageSize", policy_name) == 0) {
+ conn->limits.max_page_size = policy_value;
+ continue;
+ }
+ if (strcasecmp("MaxQueryDuration", policy_name) == 0) {
+ conn->limits.search_timeout = policy_value;
+ continue;
+ }
+ }
+
+ return 0;
+
+failed:
+ DEBUG(0, ("Failed to load ldap server query policies\n"));
+ talloc_free(tmp_ctx);
+ return -1;
+}
+
/*
initialise a server_context from a open socket and register a event handler
for reading from that socket
*/
static void ldapsrv_accept(struct stream_connection *c)
{
- struct ldapsrv_partition *part;
struct ldapsrv_service *ldapsrv_service =
talloc_get_type(c->private, struct ldapsrv_service);
struct ldapsrv_connection *conn;
+ struct cli_credentials *server_credentials;
+ struct socket_address *socket_address;
+ NTSTATUS status;
int port;
conn = talloc_zero(c, struct ldapsrv_connection);
return;
}
- conn->enable_wrap = False;
conn->packet = NULL;
conn->connection = c;
conn->service = ldapsrv_service;
- c->private = conn;
+ conn->sockets.raw = c->socket;
- port = socket_get_my_port(c->socket);
+ c->private = conn;
- conn->tls = tls_init_server(ldapsrv_service->tls_params, c->socket,
- c->event.fde, NULL, port != 389);
- if (!conn->tls) {
- ldapsrv_terminate_connection(conn, "ldapsrv_accept: tls_init_server() failed");
+ socket_address = socket_get_my_addr(c->socket, conn);
+ if (!socket_address) {
+ ldapsrv_terminate_connection(conn, "ldapsrv_accept: failed to obtain local socket address!");
return;
}
+ port = socket_address->port;
+ talloc_free(socket_address);
+
+ if (port == 636) {
+ struct socket_context *tls_socket = tls_init_server(ldapsrv_service->tls_params, c->socket,
+ c->event.fde, NULL);
+ if (!tls_socket) {
+ ldapsrv_terminate_connection(conn, "ldapsrv_accept: tls_init_server() failed");
+ return;
+ }
+ talloc_unlink(c, c->socket);
+ talloc_steal(c, tls_socket);
+ c->socket = tls_socket;
+ conn->sockets.tls = tls_socket;
+ } else if (port == 3268) /* Global catalog */ {
+ conn->global_catalog = True;
+ }
conn->packet = packet_init(conn);
if (conn->packet == NULL) {
ldapsrv_terminate_connection(conn, "out of memory");
return;
}
+
packet_set_private(conn->packet, conn);
- packet_set_tls(conn->packet, conn->tls);
+ packet_set_socket(conn->packet, c->socket);
packet_set_callback(conn->packet, ldapsrv_decode);
- packet_set_full_request(conn->packet, ldapsrv_complete_packet);
+ packet_set_full_request(conn->packet, ldap_full_packet);
packet_set_error_handler(conn->packet, ldapsrv_error_handler);
packet_set_event_context(conn->packet, c->event.ctx);
packet_set_fde(conn->packet, c->event.fde);
packet_set_serialise(conn->packet);
+
+ /* Ensure we don't get packets until the database is ready below */
+ packet_recv_disable(conn->packet);
- /* Connections start out anonymous */
- if (!NT_STATUS_IS_OK(auth_anonymous_session_info(conn, &conn->session_info))) {
- ldapsrv_terminate_connection(conn, "failed to setup anonymous session info");
+ server_credentials
+ = cli_credentials_init(conn);
+ if (!server_credentials) {
+ stream_terminate_connection(c, "Failed to init server credentials\n");
+ return;
+ }
+
+ cli_credentials_set_conf(server_credentials);
+ status = cli_credentials_set_machine_account(server_credentials);
+ if (!NT_STATUS_IS_OK(status)) {
+ stream_terminate_connection(c, talloc_asprintf(conn, "Failed to obtain server credentials, perhaps a standalone server?: %s\n", nt_errstr(status)));
return;
}
+ conn->server_credentials = server_credentials;
- part = talloc(conn, struct ldapsrv_partition);
- if (part == NULL) {
- ldapsrv_terminate_connection(conn, "talloc failed");
+ /* Connections start out anonymous */
+ if (!NT_STATUS_IS_OK(auth_anonymous_session_info(conn, &conn->session_info))) {
+ ldapsrv_terminate_connection(conn, "failed to setup anonymous session info");
return;
}
- part->base_dn = "*"; /* default partition */
- part->ops = ldapsrv_get_sldb_partition_ops();
- if (!NT_STATUS_IS_OK(part->ops->Init(part, conn))) {
- ldapsrv_terminate_connection(conn, "default partition Init failed");
+ if (!NT_STATUS_IS_OK(ldapsrv_backend_Init(conn))) {
+ ldapsrv_terminate_connection(conn, "backend Init failed");
return;
}
- conn->default_partition = part;
- DLIST_ADD_END(conn->partitions, part, struct ldapsrv_partition *);
+ /* load limits from the conf partition */
+ ldapsrv_load_limits(conn); /* should we fail on error ? */
+ /* register the server */
irpc_add_name(c->msg_ctx, "ldap_server");
+
+ /* set connections limits */
+ conn->limits.ite = event_add_timed(c->event.ctx, conn,
+ timeval_current_ofs(conn->limits.initial_timeout, 0),
+ ldapsrv_conn_init_timeout, conn);
+
+ packet_recv_enable(conn->packet);
+
}
static const struct stream_server_ops ldap_stream_ops = {
struct ldapsrv_service *ldap_service;
NTSTATUS status;
+ task_server_set_title(task, "task[ldapsrv]");
+
ldap_service = talloc_zero(task, struct ldapsrv_service);
if (ldap_service == NULL) goto failed;