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samba-mirror/source3/rpc_server/rpc_server.c
Volker Lendecke 730f7dfd61 s3:rpc_server: Delete unused code and doc references
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2021-12-10 14:02:30 +00:00

335 lines
9.0 KiB
C

/*
Unix SMB/Netbios implementation.
Generic infrstructure for RPC Daemons
Copyright (C) Simo Sorce 2010
Copyright (C) Andrew Bartlett 2011
Copyright (C) Andreas Schneider 2011
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 "librpc/rpc/dcesrv_core.h"
#include "rpc_server/rpc_pipes.h"
#include "rpc_server/rpc_server.h"
#include "rpc_server/rpc_config.h"
#include "rpc_dce.h"
#include "librpc/gen_ndr/netlogon.h"
#include "librpc/gen_ndr/auth.h"
#include "lib/tsocket/tsocket.h"
#include "libcli/named_pipe_auth/npa_tstream.h"
#include "../auth/auth_sam_reply.h"
#include "auth.h"
#include "rpc_server/rpc_ncacn_np.h"
#include "rpc_server/srv_pipe_hnd.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_SRV
/* Start listening on the appropriate unix socket and setup all is needed to
* dispatch requests to the pipes rpc implementation */
struct dcerpc_ncacn_listen_state {
int fd;
struct tevent_context *ev_ctx;
struct messaging_context *msg_ctx;
struct dcesrv_context *dce_ctx;
struct dcesrv_endpoint *endpoint;
dcerpc_ncacn_termination_fn termination_fn;
void *termination_data;
};
NTSTATUS dcerpc_ncacn_conn_init(TALLOC_CTX *mem_ctx,
struct tevent_context *ev_ctx,
struct messaging_context *msg_ctx,
struct dcesrv_context *dce_ctx,
struct dcesrv_endpoint *endpoint,
dcerpc_ncacn_termination_fn term_fn,
void *termination_data,
struct dcerpc_ncacn_conn **out)
{
struct dcerpc_ncacn_conn *ncacn_conn = NULL;
ncacn_conn = talloc_zero(mem_ctx, struct dcerpc_ncacn_conn);
if (ncacn_conn == NULL) {
return NT_STATUS_NO_MEMORY;
}
ncacn_conn->ev_ctx = ev_ctx;
ncacn_conn->msg_ctx = msg_ctx;
ncacn_conn->dce_ctx = dce_ctx;
ncacn_conn->endpoint = endpoint;
ncacn_conn->sock = -1;
ncacn_conn->termination_fn = term_fn;
ncacn_conn->termination_data = termination_data;
*out = ncacn_conn;
return NT_STATUS_OK;
}
static void ncacn_terminate_connection(struct dcerpc_ncacn_conn *conn,
const char *reason);
NTSTATUS dcesrv_auth_gensec_prepare(
TALLOC_CTX *mem_ctx,
struct dcesrv_call_state *call,
struct gensec_security **out,
void *private_data)
{
struct gensec_security *gensec = NULL;
NTSTATUS status;
if (out == NULL) {
return NT_STATUS_INVALID_PARAMETER;
}
status = auth_generic_prepare(mem_ctx,
call->conn->remote_address,
call->conn->local_address,
"DCE/RPC",
&gensec);
if (!NT_STATUS_IS_OK(status)) {
DBG_ERR("Failed to prepare gensec: %s\n", nt_errstr(status));
return status;
}
*out = gensec;
return NT_STATUS_OK;
}
void dcesrv_log_successful_authz(
struct dcesrv_call_state *call,
void *private_data)
{
TALLOC_CTX *frame = talloc_stackframe();
struct auth4_context *auth4_context = NULL;
struct dcesrv_auth *auth = call->auth_state;
enum dcerpc_transport_t transport = dcerpc_binding_get_transport(
call->conn->endpoint->ep_description);
const char *auth_type = derpc_transport_string_by_transport(transport);
const char *transport_protection = AUTHZ_TRANSPORT_PROTECTION_NONE;
NTSTATUS status;
if (frame == NULL) {
DBG_ERR("No memory");
return;
}
if (transport == NCACN_NP) {
transport_protection = AUTHZ_TRANSPORT_PROTECTION_SMB;
}
become_root();
status = make_auth4_context(frame, &auth4_context);
unbecome_root();
if (!NT_STATUS_IS_OK(status)) {
DBG_ERR("Unable to make auth context for authz log.\n");
TALLOC_FREE(frame);
return;
}
/*
* Log the authorization to this RPC interface. This
* covered ncacn_np pass-through auth, and anonymous
* DCE/RPC (eg epmapper, netlogon etc)
*/
log_successful_authz_event(auth4_context->msg_ctx,
auth4_context->lp_ctx,
call->conn->remote_address,
call->conn->local_address,
"DCE/RPC",
auth_type,
transport_protection,
auth->session_info);
auth->auth_audited = true;
TALLOC_FREE(frame);
}
static int dcesrv_assoc_group_destructor(struct dcesrv_assoc_group *assoc_group)
{
int ret;
ret = idr_remove(assoc_group->dce_ctx->assoc_groups_idr,
assoc_group->id);
if (ret != 0) {
DBG_ERR("Failed to remove assoc_group 0x%08x\n",
assoc_group->id);
}
return 0;
}
static NTSTATUS dcesrv_assoc_group_new(struct dcesrv_call_state *call)
{
struct dcesrv_connection *conn = call->conn;
struct dcesrv_context *dce_ctx = conn->dce_ctx;
const struct dcesrv_endpoint *endpoint = conn->endpoint;
enum dcerpc_transport_t transport =
dcerpc_binding_get_transport(endpoint->ep_description);
struct dcesrv_assoc_group *assoc_group = NULL;
int id;
assoc_group = talloc_zero(conn, struct dcesrv_assoc_group);
if (assoc_group == NULL) {
return NT_STATUS_NO_MEMORY;
}
id = idr_get_new_random(dce_ctx->assoc_groups_idr,
assoc_group,
UINT16_MAX);
if (id == -1) {
TALLOC_FREE(assoc_group);
DBG_ERR("Out of association groups!\n");
return NT_STATUS_RPC_OUT_OF_RESOURCES;
}
assoc_group->transport = transport;
assoc_group->id = id;
assoc_group->dce_ctx = dce_ctx;
call->conn->assoc_group = assoc_group;
talloc_set_destructor(assoc_group, dcesrv_assoc_group_destructor);
return NT_STATUS_OK;
}
static NTSTATUS dcesrv_assoc_group_reference(struct dcesrv_call_state *call,
uint32_t assoc_group_id)
{
struct dcesrv_connection *conn = call->conn;
const struct dcesrv_endpoint *endpoint = conn->endpoint;
enum dcerpc_transport_t transport =
dcerpc_binding_get_transport(endpoint->ep_description);
struct dcesrv_assoc_group *assoc_group = NULL;
void *id_ptr = NULL;
/* find an association group given a assoc_group_id */
id_ptr = idr_find(conn->dce_ctx->assoc_groups_idr, assoc_group_id);
if (id_ptr == NULL) {
/*
* FIXME If the association group is not found it has
* been created in other process (preforking daemons).
* Until this is properly fixed we just create a new
* association group in this process
*/
DBG_NOTICE("Failed to find assoc_group 0x%08x in this "
"server process, creating a new one\n",
assoc_group_id);
return dcesrv_assoc_group_new(call);
}
assoc_group = talloc_get_type_abort(id_ptr, struct dcesrv_assoc_group);
if (assoc_group->transport != transport) {
const char *at =
derpc_transport_string_by_transport(
assoc_group->transport);
const char *ct =
derpc_transport_string_by_transport(
transport);
DBG_NOTICE("assoc_group 0x%08x (transport %s) "
"is not available on transport %s",
assoc_group_id, at, ct);
return NT_STATUS_UNSUCCESSFUL;
}
conn->assoc_group = talloc_reference(conn, assoc_group);
return NT_STATUS_OK;
}
NTSTATUS dcesrv_assoc_group_find(
struct dcesrv_call_state *call,
void *private_data)
{
uint32_t assoc_group_id = call->pkt.u.bind.assoc_group_id;
if (assoc_group_id != 0) {
return dcesrv_assoc_group_reference(call, assoc_group_id);
}
/* If not requested by client create a new association group */
return dcesrv_assoc_group_new(call);
}
void dcesrv_transport_terminate_connection(struct dcesrv_connection *dce_conn,
const char *reason)
{
struct dcerpc_ncacn_conn *ncacn_conn = talloc_get_type_abort(
dce_conn->transport.private_data,
struct dcerpc_ncacn_conn);
ncacn_terminate_connection(ncacn_conn, reason);
}
static void ncacn_terminate_connection(struct dcerpc_ncacn_conn *conn,
const char *reason)
{
if (reason == NULL) {
reason = "Unknown reason";
}
DBG_NOTICE("Terminating connection - '%s'\n", reason);
talloc_free(conn);
}
NTSTATUS dcesrv_endpoint_by_ncacn_np_name(struct dcesrv_context *dce_ctx,
const char *pipe_name,
struct dcesrv_endpoint **out)
{
struct dcesrv_endpoint *e = NULL;
for (e = dce_ctx->endpoint_list; e; e = e->next) {
enum dcerpc_transport_t transport =
dcerpc_binding_get_transport(e->ep_description);
const char *endpoint = NULL;
if (transport != NCACN_NP) {
continue;
}
endpoint = dcerpc_binding_get_string_option(e->ep_description,
"endpoint");
if (endpoint == NULL) {
continue;
}
if (strncmp(endpoint, "\\pipe\\", 6) == 0) {
endpoint += 6;
}
if (strequal(endpoint, pipe_name)) {
*out = e;
return NT_STATUS_OK;
}
}
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
struct pipes_struct *dcesrv_get_pipes_struct(struct dcesrv_connection *conn)
{
struct dcerpc_ncacn_conn *ncacn_conn = talloc_get_type_abort(
conn->transport.private_data,
struct dcerpc_ncacn_conn);
return ncacn_conn->p;
}
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