#include "librpc/rpc/rpc_common.h"
#include "lib/util/samba_modules.h"
#include "librpc/gen_ndr/ndr_dcerpc.h"
+#include "../lib/util/tevent_ntstatus.h"
static NTSTATUS dcesrv_negotiate_contexts(struct dcesrv_call_state *call,
const struct dcerpc_bind *b,
enum dcerpc_transport_t transport;
char *ep_string = NULL;
bool use_single_process = true;
-
+ const char *ep_process_string;
+
+ /*
+ * If we are not using handles, there is no need for force
+ * this service into using a single process.
+ *
+ * However, due to the way we listen for RPC packets, we can
+ * only do this if we have a single service per pipe or TCP
+ * port, so we still force a single combined process for
+ * ncalrpc.
+ */
+ if (iface->flags & DCESRV_INTERFACE_FLAGS_HANDLES_NOT_USED) {
+ use_single_process = false;
+ }
+
status = dcerpc_parse_binding(dce_ctx, ep_name, &binding);
if (NT_STATUS_IS_ERR(status)) {
* If we have mulitiple endpoints on port 0, they each
* get an epemeral port (currently by walking up from
* 1024).
+ *
+ * Because one endpoint can only have one process
+ * model, we add a new IP_TCP endpoint for each model.
+ *
+ * This woks in conjunction with the forced overwrite
+ * of ep->use_single_process below.
*/
- if (!use_single_process && transport == NCACN_IP_TCP) {
+ if (ep->use_single_process != use_single_process
+ && transport == NCACN_IP_TCP) {
add_ep = true;
}
}
/* Re-get the string as we may have set a port */
ep_string = dcerpc_binding_string(dce_ctx, ep->ep_description);
- DEBUG(4,("dcesrv_interface_register: interface '%s' registered on endpoint '%s'\n",
- iface->name, ep_string));
+ if (use_single_process) {
+ ep_process_string = "single process required";
+ } else {
+ ep_process_string = "multi process compatible";
+ }
+
+ DBG_INFO("dcesrv_interface_register: interface '%s' "
+ "registered on endpoint '%s' (%s)\n",
+ iface->name, ep_string, ep_process_string);
TALLOC_FREE(ep_string);
return NT_STATUS_OK;
return NT_STATUS_OK;
}
+struct dcesrv_conn_auth_wait_context {
+ struct tevent_req *req;
+ bool done;
+ NTSTATUS status;
+};
+
+struct dcesrv_conn_auth_wait_state {
+ uint8_t dummy;
+};
+
+static struct tevent_req *dcesrv_conn_auth_wait_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ void *private_data)
+{
+ struct dcesrv_conn_auth_wait_context *auth_wait =
+ talloc_get_type_abort(private_data,
+ struct dcesrv_conn_auth_wait_context);
+ struct tevent_req *req = NULL;
+ struct dcesrv_conn_auth_wait_state *state = NULL;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct dcesrv_conn_auth_wait_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ auth_wait->req = req;
+
+ tevent_req_defer_callback(req, ev);
+
+ if (!auth_wait->done) {
+ return req;
+ }
+
+ if (tevent_req_nterror(req, auth_wait->status)) {
+ return tevent_req_post(req, ev);
+ }
+
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+}
+
+static NTSTATUS dcesrv_conn_auth_wait_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
+}
+
+static NTSTATUS dcesrv_conn_auth_wait_setup(struct dcesrv_connection *conn)
+{
+ struct dcesrv_conn_auth_wait_context *auth_wait = NULL;
+
+ if (conn->wait_send != NULL) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ auth_wait = talloc_zero(conn, struct dcesrv_conn_auth_wait_context);
+ if (auth_wait == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ conn->wait_private = auth_wait;
+ conn->wait_send = dcesrv_conn_auth_wait_send;
+ conn->wait_recv = dcesrv_conn_auth_wait_recv;
+ return NT_STATUS_OK;
+}
+
+static void dcesrv_conn_auth_wait_finished(struct dcesrv_connection *conn,
+ NTSTATUS status)
+{
+ struct dcesrv_conn_auth_wait_context *auth_wait =
+ talloc_get_type_abort(conn->wait_private,
+ struct dcesrv_conn_auth_wait_context);
+
+ auth_wait->done = true;
+ auth_wait->status = status;
+
+ if (auth_wait->req == NULL) {
+ return;
+ }
+
+ if (tevent_req_nterror(auth_wait->req, status)) {
+ return;
+ }
+
+ tevent_req_done(auth_wait->req);
+}
+
+static NTSTATUS dcesrv_auth_reply(struct dcesrv_call_state *call);
+
+static void dcesrv_bind_done(struct tevent_req *subreq);
+
/*
handle a bind request
*/
static NTSTATUS dcesrv_bind(struct dcesrv_call_state *call)
{
- struct ncacn_packet pkt;
- struct data_blob_list_item *rep;
+ struct dcesrv_connection *conn = call->conn;
+ struct ncacn_packet *pkt = &call->ack_pkt;
NTSTATUS status;
uint32_t extra_flags = 0;
uint16_t max_req = 0;
uint16_t max_rep = 0;
const char *ep_prefix = "";
const char *endpoint = NULL;
+ struct dcesrv_auth *auth = &call->conn->auth_state;
struct dcerpc_ack_ctx *ack_ctx_list = NULL;
struct dcerpc_ack_ctx *ack_features = NULL;
+ struct tevent_req *subreq = NULL;
size_t i;
status = dcerpc_verify_ncacn_packet_header(&call->pkt,
call->conn->assoc_group = dcesrv_assoc_group_new(call->conn,
call->conn->dce_ctx);
}
+
+ /*
+ * The NETLOGON server does not use handles and so
+ * there is no need to support association groups, but
+ * we need to give back a number regardless.
+ *
+ * We have to do this when it is not run as a single process,
+ * because then it can't see the other valid association
+ * groups. We handle this genericly for all endpoints not
+ * running in single process mode.
+ *
+ * We know which endpoint we are on even before checking the
+ * iface UUID, so for simplicity we enforce the same policy
+ * for all interfaces on the endpoint.
+ *
+ * This means that where NETLOGON
+ * shares an endpoint (such as ncalrpc or of 'lsa over
+ * netlogon' is set) we will still check association groups.
+ *
+ */
+
+ if (call->conn->assoc_group == NULL &&
+ !call->conn->endpoint->use_single_process) {
+ call->conn->assoc_group
+ = dcesrv_assoc_group_new(call->conn,
+ call->conn->dce_ctx);
+ }
if (call->conn->assoc_group == NULL) {
return dcesrv_bind_nak(call, 0);
}
}
/*
- * At this point we know which interface (eg netlogon, lsa,
- * drsuapi) the caller requested. This is available on
- * call->conntext->iface.
+ * At this point we still don't know which interface (eg
+ * netlogon, lsa, drsuapi) the caller requested in this bind!
+ * The most recently added context is available as the first
+ * element in the linked list at call->conn->contexts, that is
+ * call->conn->contexts->iface, but they may not have
+ * requested one at all!
*/
if ((call->pkt.pfc_flags & DCERPC_PFC_FLAG_CONC_MPX) &&
* is being requested.
*/
if (!dcesrv_auth_bind(call)) {
- struct dcesrv_auth *auth = &call->conn->auth_state;
-
- TALLOC_FREE(call->context);
if (auth->auth_level == DCERPC_AUTH_LEVEL_NONE) {
/*
}
/* setup a bind_ack */
- dcesrv_init_hdr(&pkt, lpcfg_rpc_big_endian(call->conn->dce_ctx->lp_ctx));
- pkt.auth_length = 0;
- pkt.call_id = call->pkt.call_id;
- pkt.ptype = DCERPC_PKT_BIND_ACK;
- pkt.pfc_flags = DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST | extra_flags;
- pkt.u.bind_ack.max_xmit_frag = call->conn->max_xmit_frag;
- pkt.u.bind_ack.max_recv_frag = call->conn->max_recv_frag;
- pkt.u.bind_ack.assoc_group_id = call->conn->assoc_group->id;
+ dcesrv_init_hdr(pkt, lpcfg_rpc_big_endian(call->conn->dce_ctx->lp_ctx));
+ pkt->auth_length = 0;
+ pkt->call_id = call->pkt.call_id;
+ pkt->ptype = DCERPC_PKT_BIND_ACK;
+ pkt->pfc_flags = DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST | extra_flags;
+ pkt->u.bind_ack.max_xmit_frag = call->conn->max_xmit_frag;
+ pkt->u.bind_ack.max_recv_frag = call->conn->max_recv_frag;
+ pkt->u.bind_ack.assoc_group_id = call->conn->assoc_group->id;
endpoint = dcerpc_binding_get_string_option(
call->conn->endpoint->ep_description,
endpoint += 6;
}
- pkt.u.bind_ack.secondary_address = talloc_asprintf(call, "%s%s",
+ pkt->u.bind_ack.secondary_address = talloc_asprintf(call, "%s%s",
ep_prefix,
endpoint);
- if (pkt.u.bind_ack.secondary_address == NULL) {
- TALLOC_FREE(call->context);
+ if (pkt->u.bind_ack.secondary_address == NULL) {
return NT_STATUS_NO_MEMORY;
}
- pkt.u.bind_ack.num_results = call->pkt.u.bind.num_contexts;
- pkt.u.bind_ack.ctx_list = ack_ctx_list;
- pkt.u.bind_ack.auth_info = data_blob_null;
+ pkt->u.bind_ack.num_results = call->pkt.u.bind.num_contexts;
+ pkt->u.bind_ack.ctx_list = ack_ctx_list;
+ pkt->u.bind_ack.auth_info = data_blob_null;
- status = dcesrv_auth_bind_ack(call, &pkt);
+ status = dcesrv_auth_prepare_bind_ack(call, pkt);
if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(call->context);
return dcesrv_bind_nak(call, 0);
}
+ if (auth->auth_finished) {
+ return dcesrv_auth_reply(call);
+ }
+
+ subreq = gensec_update_send(call, call->event_ctx,
+ auth->gensec_security,
+ call->in_auth_info.credentials);
+ if (subreq == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ tevent_req_set_callback(subreq, dcesrv_bind_done, call);
+
+ return dcesrv_conn_auth_wait_setup(conn);
+}
+
+static void dcesrv_bind_done(struct tevent_req *subreq)
+{
+ struct dcesrv_call_state *call =
+ tevent_req_callback_data(subreq,
+ struct dcesrv_call_state);
+ struct dcesrv_connection *conn = call->conn;
+ NTSTATUS status;
+
+ status = gensec_update_recv(subreq, call,
+ &call->out_auth_info->credentials);
+ TALLOC_FREE(subreq);
+
+ status = dcesrv_auth_complete(call, status);
+ if (!NT_STATUS_IS_OK(status)) {
+ status = dcesrv_bind_nak(call, 0);
+ dcesrv_conn_auth_wait_finished(conn, status);
+ return;
+ }
+
+ status = dcesrv_auth_reply(call);
+ dcesrv_conn_auth_wait_finished(conn, status);
+ return;
+}
+
+static NTSTATUS dcesrv_auth_reply(struct dcesrv_call_state *call)
+{
+ struct ncacn_packet *pkt = &call->ack_pkt;
+ struct data_blob_list_item *rep = NULL;
+ NTSTATUS status;
+
rep = talloc_zero(call, struct data_blob_list_item);
if (!rep) {
- TALLOC_FREE(call->context);
return NT_STATUS_NO_MEMORY;
}
- status = ncacn_push_auth(&rep->blob, call, &pkt,
+ status = ncacn_push_auth(&rep->blob, call, pkt,
call->out_auth_info);
if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(call->context);
return status;
}
}
+static void dcesrv_auth3_done(struct tevent_req *subreq);
+
/*
handle a auth3 request
*/
static NTSTATUS dcesrv_auth3(struct dcesrv_call_state *call)
{
+ struct dcesrv_connection *conn = call->conn;
+ struct dcesrv_auth *auth = &call->conn->auth_state;
+ struct tevent_req *subreq = NULL;
NTSTATUS status;
if (!call->conn->allow_auth3) {
}
/* handle the auth3 in the auth code */
- if (!dcesrv_auth_auth3(call)) {
+ if (!dcesrv_auth_prepare_auth3(call)) {
+ /*
+ * we don't send a reply to a auth3 request,
+ * except by a fault.
+ *
+ * In anycase we mark the connection as
+ * invalid.
+ */
call->conn->auth_state.auth_invalid = true;
if (call->fault_code != 0) {
return dcesrv_fault_disconnect(call, call->fault_code);
}
+ TALLOC_FREE(call);
+ return NT_STATUS_OK;
}
- talloc_free(call);
+ subreq = gensec_update_send(call, call->event_ctx,
+ auth->gensec_security,
+ call->in_auth_info.credentials);
+ if (subreq == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ tevent_req_set_callback(subreq, dcesrv_auth3_done, call);
- /* we don't send a reply to a auth3 request, except by a
- fault */
- return NT_STATUS_OK;
+ return dcesrv_conn_auth_wait_setup(conn);
+}
+
+static void dcesrv_auth3_done(struct tevent_req *subreq)
+{
+ struct dcesrv_call_state *call =
+ tevent_req_callback_data(subreq,
+ struct dcesrv_call_state);
+ struct dcesrv_connection *conn = call->conn;
+ NTSTATUS status;
+
+ status = gensec_update_recv(subreq, call,
+ &call->out_auth_info->credentials);
+ TALLOC_FREE(subreq);
+
+ status = dcesrv_auth_complete(call, status);
+ if (!NT_STATUS_IS_OK(status)) {
+ /*
+ * we don't send a reply to a auth3 request,
+ * except by a fault.
+ *
+ * In anycase we mark the connection as
+ * invalid.
+ */
+ call->conn->auth_state.auth_invalid = true;
+ if (call->fault_code != 0) {
+ status = dcesrv_fault_disconnect(call, call->fault_code);
+ dcesrv_conn_auth_wait_finished(conn, status);
+ return;
+ }
+ TALLOC_FREE(call);
+ dcesrv_conn_auth_wait_finished(conn, NT_STATUS_OK);
+ return;
+ }
+
+ /*
+ * we don't send a reply to a auth3 request.
+ */
+ TALLOC_FREE(call);
+ dcesrv_conn_auth_wait_finished(conn, NT_STATUS_OK);
+ return;
}
return NT_STATUS_OK;
}
+static void dcesrv_alter_done(struct tevent_req *subreq);
+
/*
handle a alter context request
*/
static NTSTATUS dcesrv_alter(struct dcesrv_call_state *call)
{
+ struct dcesrv_connection *conn = call->conn;
NTSTATUS status;
bool auth_ok = false;
- struct ncacn_packet pkt;
+ struct ncacn_packet *pkt = &call->ack_pkt;
uint32_t extra_flags = 0;
- struct data_blob_list_item *rep = NULL;
+ struct dcesrv_auth *auth = &call->conn->auth_state;
struct dcerpc_ack_ctx *ack_ctx_list = NULL;
+ struct tevent_req *subreq = NULL;
size_t i;
if (!call->conn->allow_alter) {
return dcesrv_fault_disconnect(call, DCERPC_FAULT_ACCESS_DENIED);
}
- dcesrv_init_hdr(&pkt, lpcfg_rpc_big_endian(call->conn->dce_ctx->lp_ctx));
- pkt.auth_length = 0;
- pkt.call_id = call->pkt.call_id;
- pkt.ptype = DCERPC_PKT_ALTER_RESP;
- pkt.pfc_flags = DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST | extra_flags;
- pkt.u.alter_resp.max_xmit_frag = call->conn->max_xmit_frag;
- pkt.u.alter_resp.max_recv_frag = call->conn->max_recv_frag;
- pkt.u.alter_resp.assoc_group_id = call->conn->assoc_group->id;
- pkt.u.alter_resp.secondary_address = "";
- pkt.u.alter_resp.num_results = call->pkt.u.alter.num_contexts;
- pkt.u.alter_resp.ctx_list = ack_ctx_list;
- pkt.u.alter_resp.auth_info = data_blob_null;
-
- status = dcesrv_auth_alter_ack(call, &pkt);
+ dcesrv_init_hdr(pkt, lpcfg_rpc_big_endian(call->conn->dce_ctx->lp_ctx));
+ pkt->auth_length = 0;
+ pkt->call_id = call->pkt.call_id;
+ pkt->ptype = DCERPC_PKT_ALTER_RESP;
+ pkt->pfc_flags = DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST | extra_flags;
+ pkt->u.alter_resp.max_xmit_frag = call->conn->max_xmit_frag;
+ pkt->u.alter_resp.max_recv_frag = call->conn->max_recv_frag;
+ pkt->u.alter_resp.assoc_group_id = call->conn->assoc_group->id;
+ pkt->u.alter_resp.secondary_address = "";
+ pkt->u.alter_resp.num_results = call->pkt.u.alter.num_contexts;
+ pkt->u.alter_resp.ctx_list = ack_ctx_list;
+ pkt->u.alter_resp.auth_info = data_blob_null;
+
+ status = dcesrv_auth_prepare_alter_ack(call, pkt);
if (!NT_STATUS_IS_OK(status)) {
return dcesrv_fault_disconnect(call, DCERPC_FAULT_SEC_PKG_ERROR);
}
- rep = talloc_zero(call, struct data_blob_list_item);
- if (!rep) {
- return NT_STATUS_NO_MEMORY;
+ if (auth->auth_finished) {
+ return dcesrv_auth_reply(call);
}
- status = ncacn_push_auth(&rep->blob, call, &pkt, call->out_auth_info);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
+ subreq = gensec_update_send(call, call->event_ctx,
+ auth->gensec_security,
+ call->in_auth_info.credentials);
+ if (subreq == NULL) {
+ return NT_STATUS_NO_MEMORY;
}
+ tevent_req_set_callback(subreq, dcesrv_alter_done, call);
- dcerpc_set_frag_length(&rep->blob, rep->blob.length);
+ return dcesrv_conn_auth_wait_setup(conn);
+}
- DLIST_ADD_END(call->replies, rep);
- dcesrv_call_set_list(call, DCESRV_LIST_CALL_LIST);
+static void dcesrv_alter_done(struct tevent_req *subreq)
+{
+ struct dcesrv_call_state *call =
+ tevent_req_callback_data(subreq,
+ struct dcesrv_call_state);
+ struct dcesrv_connection *conn = call->conn;
+ NTSTATUS status;
- if (call->conn->call_list && call->conn->call_list->replies) {
- if (call->conn->transport.report_output_data) {
- call->conn->transport.report_output_data(call->conn);
- }
+ status = gensec_update_recv(subreq, call,
+ &call->out_auth_info->credentials);
+ TALLOC_FREE(subreq);
+
+ status = dcesrv_auth_complete(call, status);
+ if (!NT_STATUS_IS_OK(status)) {
+ status = dcesrv_fault_disconnect(call, DCERPC_FAULT_SEC_PKG_ERROR);
+ dcesrv_conn_auth_wait_finished(conn, status);
+ return;
}
- return NT_STATUS_OK;
+ status = dcesrv_auth_reply(call);
+ dcesrv_conn_auth_wait_finished(conn, status);
+ return;
}
/*
void dcerpc_server_init(struct loadparm_context *lp_ctx)
{
static bool initialized;
-#define _MODULE_PROTO(init) extern NTSTATUS init(void);
+#define _MODULE_PROTO(init) extern NTSTATUS init(TALLOC_CTX *);
STATIC_dcerpc_server_MODULES_PROTO;
init_module_fn static_init[] = { STATIC_dcerpc_server_MODULES };
init_module_fn *shared_init;
shared_init = load_samba_modules(NULL, "dcerpc_server");
- run_init_functions(static_init);
- run_init_functions(shared_init);
+ run_init_functions(NULL, static_init);
+ run_init_functions(NULL, shared_init);
talloc_free(shared_init);
}
srv_conn = talloc_get_type(dce_conn->transport.private_data,
struct stream_connection);
+ dce_conn->wait_send = NULL;
+ dce_conn->wait_recv = NULL;
+ dce_conn->wait_private = NULL;
+
dce_conn->allow_bind = false;
dce_conn->allow_auth3 = false;
dce_conn->allow_alter = false;
return;
}
- DEBUG(3,("dcesrv: terminating connection due to '%s' defered due to pending calls\n",
+ DEBUG(3,("dcesrv: terminating connection due to '%s' deferred due to pending calls\n",
reason));
dce_conn->terminate = talloc_strdup(dce_conn, reason);
if (dce_conn->terminate == NULL) {
- dce_conn->terminate = "dcesrv: defered terminating connection - no memory";
+ dce_conn->terminate = "dcesrv: deferred terminating connection - no memory";
}
DLIST_ADD_END(dce_ctx->broken_connections, dce_conn);
}
struct tsocket_address *r = NULL;
ret = tsocket_address_unix_from_path(dcesrv_conn,
- "/root/ncalrpc_as_system",
+ AS_SYSTEM_MAGIC_PATH_TOKEN,
&r);
if (ret == -1) {
status = map_nt_error_from_unix_common(errno);
return;
}
+static void dcesrv_conn_wait_done(struct tevent_req *subreq);
+
static void dcesrv_read_fragment_done(struct tevent_req *subreq)
{
struct dcesrv_connection *dce_conn = tevent_req_callback_data(subreq,
return;
}
+ /*
+ * This is used to block the connection during
+ * pending authentication.
+ */
+ if (dce_conn->wait_send != NULL) {
+ subreq = dce_conn->wait_send(dce_conn,
+ dce_conn->event_ctx,
+ dce_conn->wait_private);
+ if (!subreq) {
+ status = NT_STATUS_NO_MEMORY;
+ dcesrv_terminate_connection(dce_conn, nt_errstr(status));
+ return;
+ }
+ tevent_req_set_callback(subreq, dcesrv_conn_wait_done, dce_conn);
+ return;
+ }
+
+ subreq = dcerpc_read_ncacn_packet_send(dce_conn,
+ dce_conn->event_ctx,
+ dce_conn->stream);
+ if (!subreq) {
+ status = NT_STATUS_NO_MEMORY;
+ dcesrv_terminate_connection(dce_conn, nt_errstr(status));
+ return;
+ }
+ tevent_req_set_callback(subreq, dcesrv_read_fragment_done, dce_conn);
+}
+
+static void dcesrv_conn_wait_done(struct tevent_req *subreq)
+{
+ struct dcesrv_connection *dce_conn = tevent_req_callback_data(subreq,
+ struct dcesrv_connection);
+ struct dcesrv_context *dce_ctx = dce_conn->dce_ctx;
+ NTSTATUS status;
+
+ if (dce_conn->terminate) {
+ /*
+ * if the current connection is broken
+ * we need to clean it up before any other connection
+ */
+ dcesrv_terminate_connection(dce_conn, dce_conn->terminate);
+ dcesrv_cleanup_broken_connections(dce_ctx);
+ return;
+ }
+
+ dcesrv_cleanup_broken_connections(dce_ctx);
+
+ status = dce_conn->wait_recv(subreq);
+ dce_conn->wait_send = NULL;
+ dce_conn->wait_recv = NULL;
+ dce_conn->wait_private = NULL;
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ dcesrv_terminate_connection(dce_conn, nt_errstr(status));
+ return;
+ }
+
subreq = dcerpc_read_ncacn_packet_send(dce_conn,
dce_conn->event_ctx,
dce_conn->stream);
git.samba.org / metze / samba / wip.git / blobdiff