s4:rpc_server/remote: pass through DCERPC_PFC_FLAG_CONC_MPX if it was used by the...
[Samba.git] / source4 / rpc_server / remote / dcesrv_remote.c
blob0d19955e782460461bb0e3a6297610e301d93d3b
1 /*
2 Unix SMB/CIFS implementation.
3 remote dcerpc operations
5 Copyright (C) Stefan (metze) Metzmacher 2004
6 Copyright (C) Julien Kerihuel 2008-2009
7 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2010
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "includes.h"
24 #include <tevent.h>
25 #include "rpc_server/dcerpc_server.h"
26 #include "auth/auth.h"
27 #include "auth/credentials/credentials.h"
28 #include "librpc/ndr/ndr_table.h"
29 #include "param/param.h"
31 NTSTATUS dcerpc_server_remote_init(void);
33 struct dcesrv_remote_private {
34 struct dcerpc_pipe *c_pipe;
37 static NTSTATUS remote_op_reply(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, void *r)
39 return NT_STATUS_OK;
42 static NTSTATUS remote_op_bind(struct dcesrv_call_state *dce_call, const struct dcesrv_interface *iface, uint32_t if_version)
44 NTSTATUS status;
45 const struct ndr_interface_table *table;
46 struct dcesrv_remote_private *priv;
47 const char *binding = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "dcerpc_remote", "binding");
48 const char *user, *pass, *domain;
49 struct cli_credentials *credentials;
50 bool must_free_credentials = true;
51 bool machine_account;
52 struct dcerpc_binding *b;
53 struct composite_context *pipe_conn_req;
54 uint32_t flags = 0;
56 machine_account = lpcfg_parm_bool(dce_call->conn->dce_ctx->lp_ctx, NULL, "dcerpc_remote", "use_machine_account", false);
58 priv = talloc(dce_call->conn, struct dcesrv_remote_private);
59 if (!priv) {
60 return NT_STATUS_NO_MEMORY;
63 priv->c_pipe = NULL;
64 dce_call->context->private_data = priv;
66 if (!binding) {
67 DEBUG(0,("You must specify a DCE/RPC binding string\n"));
68 return NT_STATUS_INVALID_PARAMETER;
71 user = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "dcerpc_remote", "user");
72 pass = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "dcerpc_remote", "password");
73 domain = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "dceprc_remote", "domain");
75 table = ndr_table_by_syntax(&iface->syntax_id);
76 if (!table) {
77 dce_call->fault_code = DCERPC_FAULT_UNK_IF;
78 return NT_STATUS_NET_WRITE_FAULT;
81 if (user && pass) {
82 DEBUG(5, ("dcerpc_remote: RPC Proxy: Using specified account\n"));
83 credentials = cli_credentials_init(priv);
84 if (!credentials) {
85 return NT_STATUS_NO_MEMORY;
87 cli_credentials_set_conf(credentials, dce_call->conn->dce_ctx->lp_ctx);
88 cli_credentials_set_username(credentials, user, CRED_SPECIFIED);
89 if (domain) {
90 cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
92 cli_credentials_set_password(credentials, pass, CRED_SPECIFIED);
93 } else if (machine_account) {
94 DEBUG(5, ("dcerpc_remote: RPC Proxy: Using machine account\n"));
95 credentials = cli_credentials_init(priv);
96 cli_credentials_set_conf(credentials, dce_call->conn->dce_ctx->lp_ctx);
97 if (domain) {
98 cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
100 status = cli_credentials_set_machine_account(credentials, dce_call->conn->dce_ctx->lp_ctx);
101 if (!NT_STATUS_IS_OK(status)) {
102 return status;
104 } else if (dce_call->conn->auth_state.session_info->credentials) {
105 DEBUG(5, ("dcerpc_remote: RPC Proxy: Using delegated credentials\n"));
106 credentials = dce_call->conn->auth_state.session_info->credentials;
107 must_free_credentials = false;
108 } else {
109 DEBUG(1,("dcerpc_remote: RPC Proxy: You must supply binding, user and password or have delegated credentials\n"));
110 return NT_STATUS_INVALID_PARAMETER;
113 /* parse binding string to the structure */
114 status = dcerpc_parse_binding(dce_call->context, binding, &b);
115 if (!NT_STATUS_IS_OK(status)) {
116 DEBUG(0, ("Failed to parse dcerpc binding '%s'\n", binding));
117 return status;
120 /* If we already have a remote association group ID, then use that */
121 if (dce_call->conn->assoc_group->proxied_id != 0) {
122 status = dcerpc_binding_set_assoc_group_id(b,
123 dce_call->conn->assoc_group->proxied_id);
124 if (!NT_STATUS_IS_OK(status)) {
125 DEBUG(0, ("dcerpc_binding_set_assoc_group_id() - %s'\n",
126 nt_errstr(status)));
127 return status;
131 status = dcerpc_binding_set_abstract_syntax(b, &iface->syntax_id);
132 if (!NT_STATUS_IS_OK(status)) {
133 DEBUG(0, ("dcerpc_binding_set_abstract_syntax() - %s'\n",
134 nt_errstr(status)));
135 return status;
138 if (dce_call->pkt.pfc_flags & DCERPC_PFC_FLAG_CONC_MPX) {
139 status = dcerpc_binding_set_flags(b, DCERPC_CONCURRENT_MULTIPLEX, 0);
140 if (!NT_STATUS_IS_OK(status)) {
141 DEBUG(0, ("dcerpc_binding_set_flags(CONC_MPX) - %s'\n",
142 nt_errstr(status)));
143 return status;
147 DEBUG(3, ("Using binding %s\n", dcerpc_binding_string(dce_call->context, b)));
149 pipe_conn_req = dcerpc_pipe_connect_b_send(dce_call->context, b, table,
150 credentials, dce_call->event_ctx, dce_call->conn->dce_ctx->lp_ctx);
151 status = dcerpc_pipe_connect_b_recv(pipe_conn_req, dce_call->context, &(priv->c_pipe));
153 if (must_free_credentials) {
154 talloc_free(credentials);
157 if (!NT_STATUS_IS_OK(status)) {
158 return status;
161 flags = dcerpc_binding_get_flags(priv->c_pipe->binding);
162 if (!(flags & DCERPC_CONCURRENT_MULTIPLEX)) {
163 dce_call->state_flags &= ~DCESRV_CALL_STATE_FLAG_MULTIPLEXED;
166 if (dce_call->conn->assoc_group->proxied_id == 0) {
167 dce_call->conn->assoc_group->proxied_id =
168 dcerpc_binding_get_assoc_group_id(priv->c_pipe->binding);
171 if (!NT_STATUS_IS_OK(status)) {
172 return status;
175 return NT_STATUS_OK;
178 static NTSTATUS remote_op_ndr_pull(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, struct ndr_pull *pull, void **r)
180 enum ndr_err_code ndr_err;
181 const struct ndr_interface_table *table = (const struct ndr_interface_table *)dce_call->context->iface->private_data;
182 uint16_t opnum = dce_call->pkt.u.request.opnum;
184 dce_call->fault_code = 0;
186 if (opnum >= table->num_calls) {
187 dce_call->fault_code = DCERPC_FAULT_OP_RNG_ERROR;
188 return NT_STATUS_NET_WRITE_FAULT;
192 * We don't have support for calls with pipes.
194 if (table->calls[opnum].in_pipes.num_pipes != 0) {
195 dce_call->fault_code = DCERPC_FAULT_OP_RNG_ERROR;
196 return NT_STATUS_NET_WRITE_FAULT;
198 if (table->calls[opnum].out_pipes.num_pipes != 0) {
199 dce_call->fault_code = DCERPC_FAULT_OP_RNG_ERROR;
200 return NT_STATUS_NET_WRITE_FAULT;
203 *r = talloc_size(mem_ctx, table->calls[opnum].struct_size);
204 if (!*r) {
205 return NT_STATUS_NO_MEMORY;
208 /* unravel the NDR for the packet */
209 ndr_err = table->calls[opnum].ndr_pull(pull, NDR_IN, *r);
210 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
211 dcerpc_log_packet(dce_call->conn->packet_log_dir,
212 table, opnum, NDR_IN,
213 &dce_call->pkt.u.request.stub_and_verifier);
214 dce_call->fault_code = DCERPC_FAULT_NDR;
215 return NT_STATUS_NET_WRITE_FAULT;
218 return NT_STATUS_OK;
221 static void remote_op_dispatch_done(struct tevent_req *subreq);
223 static NTSTATUS remote_op_dispatch(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, void *r)
225 struct dcesrv_remote_private *priv = talloc_get_type_abort(dce_call->context->private_data,
226 struct dcesrv_remote_private);
227 uint16_t opnum = dce_call->pkt.u.request.opnum;
228 const struct ndr_interface_table *table = dce_call->context->iface->private_data;
229 const struct ndr_interface_call *call;
230 const char *name;
231 struct tevent_req *subreq;
233 name = table->calls[opnum].name;
234 call = &table->calls[opnum];
236 if (priv->c_pipe->conn->flags & DCERPC_DEBUG_PRINT_IN) {
237 ndr_print_function_debug(call->ndr_print, name, NDR_IN | NDR_SET_VALUES, r);
240 priv->c_pipe->conn->flags |= DCERPC_NDR_REF_ALLOC;
242 /* we didn't use the return code of this function as we only check the last_fault_code */
243 subreq = dcerpc_binding_handle_call_send(dce_call, dce_call->event_ctx,
244 priv->c_pipe->binding_handle,
245 NULL, table,
246 opnum, mem_ctx, r);
247 if (subreq == NULL) {
248 DEBUG(0,("dcesrv_remote: call[%s] dcerpc_binding_handle_call_send() failed!\n", name));
249 return NT_STATUS_NO_MEMORY;
251 tevent_req_set_callback(subreq, remote_op_dispatch_done, dce_call);
253 dce_call->state_flags |= DCESRV_CALL_STATE_FLAG_ASYNC;
254 return NT_STATUS_OK;
257 static void remote_op_dispatch_done(struct tevent_req *subreq)
259 struct dcesrv_call_state *dce_call = tevent_req_callback_data(subreq,
260 struct dcesrv_call_state);
261 struct dcesrv_remote_private *priv = talloc_get_type_abort(dce_call->context->private_data,
262 struct dcesrv_remote_private);
263 uint16_t opnum = dce_call->pkt.u.request.opnum;
264 const struct ndr_interface_table *table = dce_call->context->iface->private_data;
265 const struct ndr_interface_call *call;
266 const char *name;
267 NTSTATUS status;
269 name = table->calls[opnum].name;
270 call = &table->calls[opnum];
272 /* we didn't use the return code of this function as we only check the last_fault_code */
273 status = dcerpc_binding_handle_call_recv(subreq);
274 TALLOC_FREE(subreq);
276 dce_call->fault_code = priv->c_pipe->last_fault_code;
277 if (dce_call->fault_code != 0) {
278 DEBUG(0,("dcesrv_remote: call[%s] failed with: %s!\n",
279 name, dcerpc_errstr(dce_call, dce_call->fault_code)));
280 goto reply;
283 if (NT_STATUS_IS_OK(status) &&
284 (priv->c_pipe->conn->flags & DCERPC_DEBUG_PRINT_OUT)) {
285 ndr_print_function_debug(call->ndr_print, name, NDR_OUT, dce_call->r);
288 reply:
289 status = dcesrv_reply(dce_call);
290 if (!NT_STATUS_IS_OK(status)) {
291 DEBUG(0,("dcesrv_remote: call[%s]: dcesrv_reply() failed - %s\n",
292 name, nt_errstr(status)));
296 static NTSTATUS remote_op_ndr_push(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, struct ndr_push *push, const void *r)
298 enum ndr_err_code ndr_err;
299 const struct ndr_interface_table *table = dce_call->context->iface->private_data;
300 uint16_t opnum = dce_call->pkt.u.request.opnum;
302 /* unravel the NDR for the packet */
303 ndr_err = table->calls[opnum].ndr_push(push, NDR_OUT, r);
304 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
305 dce_call->fault_code = DCERPC_FAULT_NDR;
306 return NT_STATUS_NET_WRITE_FAULT;
309 return NT_STATUS_OK;
312 static NTSTATUS remote_register_one_iface(struct dcesrv_context *dce_ctx, const struct dcesrv_interface *iface)
314 unsigned int i;
315 const struct ndr_interface_table *table = iface->private_data;
317 for (i=0;i<table->endpoints->count;i++) {
318 NTSTATUS ret;
319 const char *name = table->endpoints->names[i];
321 ret = dcesrv_interface_register(dce_ctx, name, iface, NULL);
322 if (!NT_STATUS_IS_OK(ret)) {
323 DEBUG(1,("remote_op_init_server: failed to register endpoint '%s'\n",name));
324 return ret;
328 return NT_STATUS_OK;
331 static NTSTATUS remote_op_init_server(struct dcesrv_context *dce_ctx, const struct dcesrv_endpoint_server *ep_server)
333 unsigned int i;
334 char **ifaces = str_list_make(dce_ctx, lpcfg_parm_string(dce_ctx->lp_ctx, NULL, "dcerpc_remote", "interfaces"),NULL);
336 if (!ifaces) {
337 DEBUG(3,("remote_op_init_server: no interfaces configured\n"));
338 return NT_STATUS_OK;
341 for (i=0;ifaces[i];i++) {
342 NTSTATUS ret;
343 struct dcesrv_interface iface;
345 if (!ep_server->interface_by_name(&iface, ifaces[i])) {
346 DEBUG(0,("remote_op_init_server: failed to find interface = '%s'\n", ifaces[i]));
347 talloc_free(ifaces);
348 return NT_STATUS_UNSUCCESSFUL;
351 ret = remote_register_one_iface(dce_ctx, &iface);
352 if (!NT_STATUS_IS_OK(ret)) {
353 DEBUG(0,("remote_op_init_server: failed to register interface = '%s'\n", ifaces[i]));
354 talloc_free(ifaces);
355 return ret;
359 talloc_free(ifaces);
360 return NT_STATUS_OK;
363 static bool remote_fill_interface(struct dcesrv_interface *iface, const struct ndr_interface_table *if_tabl)
365 iface->name = if_tabl->name;
366 iface->syntax_id = if_tabl->syntax_id;
368 iface->bind = remote_op_bind;
369 iface->unbind = NULL;
371 iface->ndr_pull = remote_op_ndr_pull;
372 iface->dispatch = remote_op_dispatch;
373 iface->reply = remote_op_reply;
374 iface->ndr_push = remote_op_ndr_push;
376 iface->private_data = if_tabl;
378 return true;
381 static bool remote_op_interface_by_uuid(struct dcesrv_interface *iface, const struct GUID *uuid, uint32_t if_version)
383 const struct ndr_interface_list *l;
385 for (l=ndr_table_list();l;l=l->next) {
386 if (l->table->syntax_id.if_version == if_version &&
387 GUID_equal(&l->table->syntax_id.uuid, uuid)==0) {
388 return remote_fill_interface(iface, l->table);
392 return false;
395 static bool remote_op_interface_by_name(struct dcesrv_interface *iface, const char *name)
397 const struct ndr_interface_table *tbl = ndr_table_by_name(name);
399 if (tbl)
400 return remote_fill_interface(iface, tbl);
402 return false;
405 NTSTATUS dcerpc_server_remote_init(void)
407 NTSTATUS ret;
408 struct dcesrv_endpoint_server ep_server;
410 ZERO_STRUCT(ep_server);
412 /* fill in our name */
413 ep_server.name = "remote";
415 /* fill in all the operations */
416 ep_server.init_server = remote_op_init_server;
418 ep_server.interface_by_uuid = remote_op_interface_by_uuid;
419 ep_server.interface_by_name = remote_op_interface_by_name;
421 /* register ourselves with the DCERPC subsystem. */
422 ret = dcerpc_register_ep_server(&ep_server);
423 if (!NT_STATUS_IS_OK(ret)) {
424 DEBUG(0,("Failed to register 'remote' endpoint server!\n"));
425 return ret;
428 /* We need the full DCE/RPC interface table */
429 ndr_table_init();
431 return ret;