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