source4/rpc_server/remote/dcesrv_remote.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    remote dcerpc operations
   4
   5    Copyright (C) Stefan (metze) Metzmacher 2004
   6
   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.
  11
  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.
  16
  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.
  20 */
  21
  22 #include "includes.h"
  23 #include "rpc_server/dcerpc_server.h"
  24 #include "librpc/gen_ndr/tables.h"
  25
  26 struct dcesrv_remote_private {
  27         struct dcerpc_pipe *c_pipe;
  28         void *private;
  29 };
  30
  31 static NTSTATUS remote_op_bind(struct dcesrv_call_state *dce_call, const struct dcesrv_interface *iface)
  32 {
  33         NTSTATUS status;
  34         struct dcesrv_remote_private *private;
  35         const char *binding = lp_parm_string(-1, "dcerpc_remote", "binding");
  36
  37         if (!binding) {
  38                 printf("You must specify a ncacn binding string\n");
  39                 return NT_STATUS_INVALID_PARAMETER;
  40         }
  41
  42         private = talloc_p(dce_call->conn, struct dcesrv_remote_private);
  43         if (!private) {
  44                 return NT_STATUS_NO_MEMORY;
  45         }
  46
  47         status = dcerpc_pipe_connect(&(private->c_pipe), binding, iface->ndr->uuid, iface->ndr->if_version,
  48                                      lp_workgroup(),
  49                                      lp_parm_string(-1, "dcerpc_remote", "username"),
  50                                      lp_parm_string(-1, "dcerpc_remote", "password"));
  51
  52         dce_call->conn->private = private;
  53
  54         return NT_STATUS_OK;
  55 }
  56
  57 static void remote_op_unbind(struct dcesrv_connection *dce_conn, const struct dcesrv_interface *iface)
  58 {
  59         struct dcesrv_remote_private *private = dce_conn->private;
  60
  61         dcerpc_pipe_close(private->c_pipe);
  62
  63         return;
  64 }
  65
  66 static NTSTATUS remote_op_dispatch(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx, void *r)
  67 {
  68         struct dcesrv_remote_private *private = dce_call->conn->private;
  69         NTSTATUS status;
  70         uint16_t opnum = dce_call->pkt.u.request.opnum;
  71         const char *name = dce_call->conn->iface->ndr->calls[opnum].name;
  72         ndr_push_flags_fn_t ndr_push_fn = dce_call->conn->iface->ndr->calls[opnum].ndr_push;
  73         ndr_pull_flags_fn_t ndr_pull_fn = dce_call->conn->iface->ndr->calls[opnum].ndr_pull;
  74         ndr_print_function_t ndr_print_fn = dce_call->conn->iface->ndr->calls[opnum].ndr_print;
  75         size_t struct_size = dce_call->conn->iface->ndr->calls[opnum].struct_size;
  76
  77         if (private->c_pipe->flags & DCERPC_DEBUG_PRINT_IN) {
  78                 ndr_print_function_debug(ndr_print_fn, name, NDR_IN | NDR_SET_VALUES, r);
  79         }
  80
  81         status = dcerpc_ndr_request(private->c_pipe, NULL, opnum, mem_ctx,
  82                                     (ndr_push_flags_fn_t) ndr_push_fn,
  83                                     (ndr_pull_flags_fn_t) ndr_pull_fn,
  84                                     r, struct_size);
  85
  86         if (!NT_STATUS_IS_OK(status)) {
  87                 DEBUG(0,("dcesrv_remote: call[%s] failed with: %s!\n",name, nt_errstr(status)));
  88                 return status;
  89         }
  90
  91         if (NT_STATUS_IS_OK(status) && (private->c_pipe->flags & DCERPC_DEBUG_PRINT_OUT)) {
  92                 ndr_print_function_debug(ndr_print_fn, name, NDR_OUT, r);
  93         }
  94
  95         return status;
  96 }
  97
  98 static NTSTATUS remote_register_one_iface(struct dcesrv_context *dce_ctx, const struct dcesrv_interface *iface)
  99 {
 100         int i;
 101
 102         for (i=0;i<iface->ndr->endpoints->count;i++) {
 103                 NTSTATUS ret;
 104                 const char *name = iface->ndr->endpoints->names[i];
 105
 106                 ret = dcesrv_interface_register(dce_ctx, name, iface, NULL);
 107                 if (!NT_STATUS_IS_OK(ret)) {
 108                         DEBUG(1,("remote_op_init_server: failed to register endpoint '%s'\n",name));
 109                         return ret;
 110                 }
 111         }
 112
 113         return NT_STATUS_OK;
 114 }
 115
 116 static NTSTATUS remote_op_init_server(struct dcesrv_context *dce_ctx, const struct dcesrv_endpoint_server *ep_server)
 117 {
 118         int i;
 119         char **ifaces = str_list_make(lp_parm_string(-1,"dcerpc_remote","interfaces"),NULL);
 120
 121         if (!ifaces) {
 122                 DEBUG(3,("remote_op_init_server: no interfaces configured\n"));
 123                 return NT_STATUS_OK;
 124         }
 125
 126         for (i=0;ifaces[i];i++) {
 127                 NTSTATUS ret;
 128                 struct dcesrv_interface iface;
 129
 130                 if (!ep_server->interface_by_name(&iface, ifaces[i])) {
 131                         DEBUG(0,("remote_op_init_server: failed to find interface = '%s'\n", ifaces[i]));
 132                         str_list_free(&ifaces);
 133                         return NT_STATUS_UNSUCCESSFUL;
 134                 }
 135
 136                 ret = remote_register_one_iface(dce_ctx, &iface);
 137                 if (!NT_STATUS_IS_OK(ret)) {
 138                         DEBUG(0,("remote_op_init_server: failed to register interface = '%s'\n", ifaces[i]));
 139                         str_list_free(&ifaces);
 140                         return ret;
 141                 }
 142         }
 143
 144         str_list_free(&ifaces);
 145         return NT_STATUS_OK;
 146 }
 147
 148 static BOOL remote_fill_interface(struct dcesrv_interface *iface, const struct dcerpc_interface_table *if_tabl)
 149 {
 150         iface->ndr = if_tabl;
 151
 152         iface->bind = remote_op_bind;
 153         iface->unbind = remote_op_unbind;
 154         iface->dispatch = remote_op_dispatch;
 155
 156         return True;
 157 }
 158
 159 static BOOL remote_op_interface_by_uuid(struct dcesrv_interface *iface, const char *uuid, uint32_t if_version)
 160 {
 161         int i;
 162
 163         for (i=0;dcerpc_pipes[i];i++) {
 164                 if (dcerpc_pipes[i]->if_version == if_version &&
 165                         strcmp(dcerpc_pipes[i]->uuid, uuid)==0) {
 166                         return remote_fill_interface(iface, dcerpc_pipes[i]);
 167                 }
 168         }
 169
 170         return False;
 171 }
 172
 173 static BOOL remote_op_interface_by_name(struct dcesrv_interface *iface, const char *name)
 174 {
 175         int i;
 176
 177         for (i=0;dcerpc_pipes[i];i++) {
 178                 if (strcmp(dcerpc_pipes[i]->name, name)==0) {
 179                         return remote_fill_interface(iface, dcerpc_pipes[i]);
 180                 }
 181         }
 182
 183         return False;
 184 }
 185
 186 NTSTATUS dcerpc_remote_init(void)
 187 {
 188         NTSTATUS ret;
 189         struct dcesrv_endpoint_server ep_server;
 190
 191         ZERO_STRUCT(ep_server);
 192
 193         /* fill in our name */
 194         ep_server.name = "remote";
 195
 196         /* fill in all the operations */
 197         ep_server.init_server = remote_op_init_server;
 198
 199         ep_server.interface_by_uuid = remote_op_interface_by_uuid;
 200         ep_server.interface_by_name = remote_op_interface_by_name;
 201
 202         /* register ourselves with the DCERPC subsystem. */
 203         ret = register_backend("dcerpc", &ep_server);
 204         if (!NT_STATUS_IS_OK(ret)) {
 205                 DEBUG(0,("Failed to register 'remote' endpoint server!\n"));
 206                 return ret;
 207         }
 208
 209         return ret;
 210 }