2 Unix SMB/CIFS implementation.
3 remote dcerpc operations
5 Copyright (C) Stefan (metze) Metzmacher 2004
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include "rpc_server/dcerpc_server.h"
24 #include "auth/auth.h"
25 #include "librpc/rpc/dcerpc_table.h"
28 struct dcesrv_remote_private {
29 struct dcerpc_pipe *c_pipe;
32 static NTSTATUS remote_op_bind(struct dcesrv_call_state *dce_call, const struct dcesrv_interface *iface)
35 const struct dcerpc_interface_table *table;
36 struct dcesrv_remote_private *private;
37 const char *binding = lp_parm_string(-1, "dcerpc_remote", "binding");
38 const char *user, *pass, *domain;
39 struct cli_credentials *credentials;
42 machine_account = lp_parm_bool(-1, "dcerpc_remote", "use_machine_account", False);
44 private = talloc(dce_call->conn, struct dcesrv_remote_private);
46 return NT_STATUS_NO_MEMORY;
49 private->c_pipe = NULL;
50 dce_call->context->private = private;
53 DEBUG(0,("You must specify a DCE/RPC binding string\n"));
54 return NT_STATUS_INVALID_PARAMETER;
57 user = lp_parm_string(-1, "dcerpc_remote", "user");
58 pass = lp_parm_string(-1, "dcerpc_remote", "password");
59 domain = lp_parm_string(-1, "dceprc_remote", "domain");
61 table = idl_iface_by_uuid(&iface->syntax_id.uuid); /* FIXME: What about if_version ? */
63 dce_call->fault_code = DCERPC_FAULT_UNK_IF;
64 return NT_STATUS_NET_WRITE_FAULT;
68 DEBUG(5, ("dcerpc_remote: RPC Proxy: Using specified account\n"));
69 credentials = cli_credentials_init(private);
71 return NT_STATUS_NO_MEMORY;
73 cli_credentials_set_conf(credentials);
74 cli_credentials_set_username(credentials, user, CRED_SPECIFIED);
76 cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
78 cli_credentials_set_password(credentials, pass, CRED_SPECIFIED);
79 } else if (machine_account) {
80 DEBUG(5, ("dcerpc_remote: RPC Proxy: Using machine account\n"));
81 credentials = cli_credentials_init(private);
82 cli_credentials_set_conf(credentials);
84 cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
86 status = cli_credentials_set_machine_account(credentials);
87 if (!NT_STATUS_IS_OK(status)) {
90 } else if (dce_call->conn->auth_state.session_info->credentials) {
91 DEBUG(5, ("dcerpc_remote: RPC Proxy: Using delegated credentials\n"));
92 credentials = dce_call->conn->auth_state.session_info->credentials;
94 DEBUG(1,("dcerpc_remote: RPC Proxy: You must supply binding, user and password or have delegated credentials\n"));
95 return NT_STATUS_INVALID_PARAMETER;
98 status = dcerpc_pipe_connect(private,
99 &(private->c_pipe), binding, table,
100 credentials, dce_call->event_ctx);
102 talloc_free(credentials);
103 if (!NT_STATUS_IS_OK(status)) {
110 static void remote_op_unbind(struct dcesrv_connection_context *context, const struct dcesrv_interface *iface)
112 struct dcesrv_remote_private *private = context->private;
114 talloc_free(private->c_pipe);
119 static NTSTATUS remote_op_ndr_pull(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, struct ndr_pull *pull, void **r)
122 const struct dcerpc_interface_table *table = dce_call->context->iface->private;
123 uint16_t opnum = dce_call->pkt.u.request.opnum;
125 dce_call->fault_code = 0;
127 if (opnum >= table->num_calls) {
128 dce_call->fault_code = DCERPC_FAULT_OP_RNG_ERROR;
129 return NT_STATUS_NET_WRITE_FAULT;
132 *r = talloc_size(mem_ctx, table->calls[opnum].struct_size);
134 return NT_STATUS_NO_MEMORY;
137 /* unravel the NDR for the packet */
138 status = table->calls[opnum].ndr_pull(pull, NDR_IN, *r);
139 if (!NT_STATUS_IS_OK(status)) {
140 dcerpc_log_packet(table, opnum, NDR_IN,
141 &dce_call->pkt.u.request.stub_and_verifier);
142 dce_call->fault_code = DCERPC_FAULT_NDR;
143 return NT_STATUS_NET_WRITE_FAULT;
149 static NTSTATUS remote_op_dispatch(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, void *r)
151 struct dcesrv_remote_private *private = dce_call->context->private;
152 uint16_t opnum = dce_call->pkt.u.request.opnum;
153 const struct dcerpc_interface_table *table = dce_call->context->iface->private;
154 const struct dcerpc_interface_call *call;
157 name = table->calls[opnum].name;
158 call = &table->calls[opnum];
160 if (private->c_pipe->conn->flags & DCERPC_DEBUG_PRINT_IN) {
161 ndr_print_function_debug(call->ndr_print, name, NDR_IN | NDR_SET_VALUES, r);
164 /* we didn't use the return code of this function as we only check the last_fault_code */
165 dcerpc_ndr_request(private->c_pipe, NULL, table, opnum, mem_ctx,r);
167 dce_call->fault_code = private->c_pipe->last_fault_code;
168 if (dce_call->fault_code != 0) {
169 DEBUG(0,("dcesrv_remote: call[%s] failed with: %s!\n",name, dcerpc_errstr(mem_ctx, dce_call->fault_code)));
170 return NT_STATUS_NET_WRITE_FAULT;
173 if ((dce_call->fault_code == 0) &&
174 (private->c_pipe->conn->flags & DCERPC_DEBUG_PRINT_OUT)) {
175 ndr_print_function_debug(call->ndr_print, name, NDR_OUT, r);
181 static NTSTATUS remote_op_ndr_push(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, struct ndr_push *push, const void *r)
184 const struct dcerpc_interface_table *table = dce_call->context->iface->private;
185 uint16_t opnum = dce_call->pkt.u.request.opnum;
187 /* unravel the NDR for the packet */
188 status = table->calls[opnum].ndr_push(push, NDR_OUT, r);
189 if (!NT_STATUS_IS_OK(status)) {
190 dce_call->fault_code = DCERPC_FAULT_NDR;
191 return NT_STATUS_NET_WRITE_FAULT;
197 static NTSTATUS remote_register_one_iface(struct dcesrv_context *dce_ctx, const struct dcesrv_interface *iface)
200 const struct dcerpc_interface_table *table = iface->private;
202 for (i=0;i<table->endpoints->count;i++) {
204 const char *name = table->endpoints->names[i];
206 ret = dcesrv_interface_register(dce_ctx, name, iface, NULL);
207 if (!NT_STATUS_IS_OK(ret)) {
208 DEBUG(1,("remote_op_init_server: failed to register endpoint '%s'\n",name));
216 static NTSTATUS remote_op_init_server(struct dcesrv_context *dce_ctx, const struct dcesrv_endpoint_server *ep_server)
219 const char **ifaces = str_list_make(dce_ctx, lp_parm_string(-1,"dcerpc_remote","interfaces"),NULL);
222 DEBUG(3,("remote_op_init_server: no interfaces configured\n"));
226 for (i=0;ifaces[i];i++) {
228 struct dcesrv_interface iface;
230 if (!ep_server->interface_by_name(&iface, ifaces[i])) {
231 DEBUG(0,("remote_op_init_server: failed to find interface = '%s'\n", ifaces[i]));
233 return NT_STATUS_UNSUCCESSFUL;
236 ret = remote_register_one_iface(dce_ctx, &iface);
237 if (!NT_STATUS_IS_OK(ret)) {
238 DEBUG(0,("remote_op_init_server: failed to register interface = '%s'\n", ifaces[i]));
248 static BOOL remote_fill_interface(struct dcesrv_interface *iface, const struct dcerpc_interface_table *if_tabl)
250 iface->name = if_tabl->name;
251 iface->syntax_id = if_tabl->syntax_id;
253 iface->bind = remote_op_bind;
254 iface->unbind = remote_op_unbind;
256 iface->ndr_pull = remote_op_ndr_pull;
257 iface->dispatch = remote_op_dispatch;
258 iface->ndr_push = remote_op_ndr_push;
260 iface->private = if_tabl;
265 static BOOL remote_op_interface_by_uuid(struct dcesrv_interface *iface, const struct GUID *uuid, uint32_t if_version)
267 const struct dcerpc_interface_list *l;
269 for (l=librpc_dcerpc_pipes();l;l=l->next) {
270 if (l->table->syntax_id.if_version == if_version &&
271 GUID_equal(&l->table->syntax_id.uuid, uuid)==0) {
272 return remote_fill_interface(iface, l->table);
279 static BOOL remote_op_interface_by_name(struct dcesrv_interface *iface, const char *name)
281 const struct dcerpc_interface_table *tbl = idl_iface_by_name(name);
284 return remote_fill_interface(iface, tbl);
289 NTSTATUS dcerpc_server_remote_init(void)
292 struct dcesrv_endpoint_server ep_server;
294 ZERO_STRUCT(ep_server);
296 /* fill in our name */
297 ep_server.name = "remote";
299 /* fill in all the operations */
300 ep_server.init_server = remote_op_init_server;
302 ep_server.interface_by_uuid = remote_op_interface_by_uuid;
303 ep_server.interface_by_name = remote_op_interface_by_name;
305 /* register ourselves with the DCERPC subsystem. */
306 ret = dcerpc_register_ep_server(&ep_server);
307 if (!NT_STATUS_IS_OK(ret)) {
308 DEBUG(0,("Failed to register 'remote' endpoint server!\n"));
312 /* We need the full DCE/RPC interface table */