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