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 3 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, see <http://www.gnu.org/licenses/>.
22 #include "rpc_server/dcerpc_server.h"
23 #include "auth/auth.h"
24 #include "auth/credentials/credentials.h"
25 #include "librpc/rpc/dcerpc_table.h"
28 struct dcesrv_remote_private {
29 struct dcerpc_pipe *c_pipe;
32 static NTSTATUS remote_op_reply(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, void *r)
37 static NTSTATUS remote_op_bind(struct dcesrv_call_state *dce_call, const struct dcesrv_interface *iface)
40 const struct ndr_interface_table *table;
41 struct dcesrv_remote_private *private;
42 const char *binding = lp_parm_string(-1, "dcerpc_remote", "binding");
43 const char *user, *pass, *domain;
44 struct cli_credentials *credentials;
47 machine_account = lp_parm_bool(-1, "dcerpc_remote", "use_machine_account", False);
49 private = talloc(dce_call->conn, struct dcesrv_remote_private);
51 return NT_STATUS_NO_MEMORY;
54 private->c_pipe = NULL;
55 dce_call->context->private = private;
58 DEBUG(0,("You must specify a DCE/RPC binding string\n"));
59 return NT_STATUS_INVALID_PARAMETER;
62 user = lp_parm_string(-1, "dcerpc_remote", "user");
63 pass = lp_parm_string(-1, "dcerpc_remote", "password");
64 domain = lp_parm_string(-1, "dceprc_remote", "domain");
66 table = idl_iface_by_uuid(&iface->syntax_id.uuid); /* FIXME: What about if_version ? */
68 dce_call->fault_code = DCERPC_FAULT_UNK_IF;
69 return NT_STATUS_NET_WRITE_FAULT;
73 DEBUG(5, ("dcerpc_remote: RPC Proxy: Using specified account\n"));
74 credentials = cli_credentials_init(private);
76 return NT_STATUS_NO_MEMORY;
78 cli_credentials_set_conf(credentials);
79 cli_credentials_set_username(credentials, user, CRED_SPECIFIED);
81 cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
83 cli_credentials_set_password(credentials, pass, CRED_SPECIFIED);
84 } else if (machine_account) {
85 DEBUG(5, ("dcerpc_remote: RPC Proxy: Using machine account\n"));
86 credentials = cli_credentials_init(private);
87 cli_credentials_set_conf(credentials);
89 cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
91 status = cli_credentials_set_machine_account(credentials);
92 if (!NT_STATUS_IS_OK(status)) {
95 } else if (dce_call->conn->auth_state.session_info->credentials) {
96 DEBUG(5, ("dcerpc_remote: RPC Proxy: Using delegated credentials\n"));
97 credentials = dce_call->conn->auth_state.session_info->credentials;
99 DEBUG(1,("dcerpc_remote: RPC Proxy: You must supply binding, user and password or have delegated credentials\n"));
100 return NT_STATUS_INVALID_PARAMETER;
103 status = dcerpc_pipe_connect(private,
104 &(private->c_pipe), binding, table,
105 credentials, dce_call->event_ctx);
107 talloc_free(credentials);
108 if (!NT_STATUS_IS_OK(status)) {
115 static void remote_op_unbind(struct dcesrv_connection_context *context, const struct dcesrv_interface *iface)
117 struct dcesrv_remote_private *private = context->private;
119 talloc_free(private->c_pipe);
124 static NTSTATUS remote_op_ndr_pull(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, struct ndr_pull *pull, void **r)
127 const struct ndr_interface_table *table = dce_call->context->iface->private;
128 uint16_t opnum = dce_call->pkt.u.request.opnum;
130 dce_call->fault_code = 0;
132 if (opnum >= table->num_calls) {
133 dce_call->fault_code = DCERPC_FAULT_OP_RNG_ERROR;
134 return NT_STATUS_NET_WRITE_FAULT;
137 *r = talloc_size(mem_ctx, table->calls[opnum].struct_size);
139 return NT_STATUS_NO_MEMORY;
142 /* unravel the NDR for the packet */
143 status = table->calls[opnum].ndr_pull(pull, NDR_IN, *r);
144 if (!NT_STATUS_IS_OK(status)) {
145 dcerpc_log_packet(table, opnum, NDR_IN,
146 &dce_call->pkt.u.request.stub_and_verifier);
147 dce_call->fault_code = DCERPC_FAULT_NDR;
148 return NT_STATUS_NET_WRITE_FAULT;
154 static NTSTATUS remote_op_dispatch(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, void *r)
156 struct dcesrv_remote_private *private = dce_call->context->private;
157 uint16_t opnum = dce_call->pkt.u.request.opnum;
158 const struct ndr_interface_table *table = dce_call->context->iface->private;
159 const struct ndr_interface_call *call;
162 name = table->calls[opnum].name;
163 call = &table->calls[opnum];
165 if (private->c_pipe->conn->flags & DCERPC_DEBUG_PRINT_IN) {
166 ndr_print_function_debug(call->ndr_print, name, NDR_IN | NDR_SET_VALUES, r);
169 private->c_pipe->conn->flags |= DCERPC_NDR_REF_ALLOC;
171 /* we didn't use the return code of this function as we only check the last_fault_code */
172 dcerpc_ndr_request(private->c_pipe, NULL, table, opnum, mem_ctx,r);
174 dce_call->fault_code = private->c_pipe->last_fault_code;
175 if (dce_call->fault_code != 0) {
176 DEBUG(0,("dcesrv_remote: call[%s] failed with: %s!\n",name, dcerpc_errstr(mem_ctx, dce_call->fault_code)));
177 return NT_STATUS_NET_WRITE_FAULT;
180 if ((dce_call->fault_code == 0) &&
181 (private->c_pipe->conn->flags & DCERPC_DEBUG_PRINT_OUT)) {
182 ndr_print_function_debug(call->ndr_print, name, NDR_OUT, r);
188 static NTSTATUS remote_op_ndr_push(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, struct ndr_push *push, const void *r)
191 const struct ndr_interface_table *table = dce_call->context->iface->private;
192 uint16_t opnum = dce_call->pkt.u.request.opnum;
194 /* unravel the NDR for the packet */
195 status = table->calls[opnum].ndr_push(push, NDR_OUT, r);
196 if (!NT_STATUS_IS_OK(status)) {
197 dce_call->fault_code = DCERPC_FAULT_NDR;
198 return NT_STATUS_NET_WRITE_FAULT;
204 static NTSTATUS remote_register_one_iface(struct dcesrv_context *dce_ctx, const struct dcesrv_interface *iface)
207 const struct ndr_interface_table *table = iface->private;
209 for (i=0;i<table->endpoints->count;i++) {
211 const char *name = table->endpoints->names[i];
213 ret = dcesrv_interface_register(dce_ctx, name, iface, NULL);
214 if (!NT_STATUS_IS_OK(ret)) {
215 DEBUG(1,("remote_op_init_server: failed to register endpoint '%s'\n",name));
223 static NTSTATUS remote_op_init_server(struct dcesrv_context *dce_ctx, const struct dcesrv_endpoint_server *ep_server)
226 const char **ifaces = str_list_make(dce_ctx, lp_parm_string(-1,"dcerpc_remote","interfaces"),NULL);
229 DEBUG(3,("remote_op_init_server: no interfaces configured\n"));
233 for (i=0;ifaces[i];i++) {
235 struct dcesrv_interface iface;
237 if (!ep_server->interface_by_name(&iface, ifaces[i])) {
238 DEBUG(0,("remote_op_init_server: failed to find interface = '%s'\n", ifaces[i]));
240 return NT_STATUS_UNSUCCESSFUL;
243 ret = remote_register_one_iface(dce_ctx, &iface);
244 if (!NT_STATUS_IS_OK(ret)) {
245 DEBUG(0,("remote_op_init_server: failed to register interface = '%s'\n", ifaces[i]));
255 static BOOL remote_fill_interface(struct dcesrv_interface *iface, const struct ndr_interface_table *if_tabl)
257 iface->name = if_tabl->name;
258 iface->syntax_id = if_tabl->syntax_id;
260 iface->bind = remote_op_bind;
261 iface->unbind = remote_op_unbind;
263 iface->ndr_pull = remote_op_ndr_pull;
264 iface->dispatch = remote_op_dispatch;
265 iface->reply = remote_op_reply;
266 iface->ndr_push = remote_op_ndr_push;
268 iface->private = if_tabl;
273 static BOOL remote_op_interface_by_uuid(struct dcesrv_interface *iface, const struct GUID *uuid, uint32_t if_version)
275 const struct ndr_interface_list *l;
277 for (l=librpc_dcerpc_pipes();l;l=l->next) {
278 if (l->table->syntax_id.if_version == if_version &&
279 GUID_equal(&l->table->syntax_id.uuid, uuid)==0) {
280 return remote_fill_interface(iface, l->table);
287 static BOOL remote_op_interface_by_name(struct dcesrv_interface *iface, const char *name)
289 const struct ndr_interface_table *tbl = idl_iface_by_name(name);
292 return remote_fill_interface(iface, tbl);
297 NTSTATUS dcerpc_server_remote_init(void)
300 struct dcesrv_endpoint_server ep_server;
302 ZERO_STRUCT(ep_server);
304 /* fill in our name */
305 ep_server.name = "remote";
307 /* fill in all the operations */
308 ep_server.init_server = remote_op_init_server;
310 ep_server.interface_by_uuid = remote_op_interface_by_uuid;
311 ep_server.interface_by_name = remote_op_interface_by_name;
313 /* register ourselves with the DCERPC subsystem. */
314 ret = dcerpc_register_ep_server(&ep_server);
315 if (!NT_STATUS_IS_OK(ret)) {
316 DEBUG(0,("Failed to register 'remote' endpoint server!\n"));
320 /* We need the full DCE/RPC interface table */