reactos/lib/rpcrt4/ndr_midl.c

   1 /*
   2  * MIDL proxy/stub stuff
   3  *
   4  * Copyright 2002 Ove Kåven, TransGaming Technologies
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  * TODO:
  21  *  - figure out whether we *really* got this right
  22  *  - check for errors and throw exceptions
  23  */
  24
  25 #include <stdarg.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <assert.h>
  29
  30 #define COBJMACROS
  31
  32 #include "windef.h"
  33 #include "winbase.h"
  34 #include "winerror.h"
  35 #include "winreg.h"
  36
  37 #include "objbase.h"
  38
  39 #include "rpcproxy.h"
  40
  41 #include "wine/debug.h"
  42
  43 #include "cpsf.h"
  44 #include "ndr_misc.h"
  45 #include "rpcndr.h"
  46
  47 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  48
  49 /***********************************************************************
  50  *           NdrProxyInitialize [RPCRT4.@]
  51  */
  52 void WINAPI NdrProxyInitialize(void *This,
  53                               PRPC_MESSAGE pRpcMsg,
  54                               PMIDL_STUB_MESSAGE pStubMsg,
  55                               PMIDL_STUB_DESC pStubDescriptor,
  56                               unsigned int ProcNum)
  57 {
  58   HRESULT hr;
  59
  60   TRACE("(%p,%p,%p,%p,%d)\n", This, pRpcMsg, pStubMsg, pStubDescriptor, ProcNum);
  61   NdrClientInitializeNew(pRpcMsg, pStubMsg, pStubDescriptor, ProcNum);
  62   if (This) StdProxy_GetChannel(This, &pStubMsg->pRpcChannelBuffer);
  63   if (pStubMsg->pRpcChannelBuffer) {
  64     hr = IRpcChannelBuffer_GetDestCtx(pStubMsg->pRpcChannelBuffer,
  65                                      &pStubMsg->dwDestContext,
  66                                      &pStubMsg->pvDestContext);
  67   }
  68   TRACE("channel=%p\n", pStubMsg->pRpcChannelBuffer);
  69 }
  70
  71 /***********************************************************************
  72  *           NdrProxyGetBuffer [RPCRT4.@]
  73  */
  74 void WINAPI NdrProxyGetBuffer(void *This,
  75                              PMIDL_STUB_MESSAGE pStubMsg)
  76 {
  77   HRESULT hr;
  78   const IID *riid = NULL;
  79
  80   TRACE("(%p,%p)\n", This, pStubMsg);
  81   pStubMsg->RpcMsg->BufferLength = pStubMsg->BufferLength;
  82   pStubMsg->dwStubPhase = PROXY_GETBUFFER;
  83   hr = StdProxy_GetIID(This, &riid);
  84   hr = IRpcChannelBuffer_GetBuffer(pStubMsg->pRpcChannelBuffer,
  85                                   (RPCOLEMESSAGE*)pStubMsg->RpcMsg,
  86                                   riid);
  87   pStubMsg->BufferStart = pStubMsg->RpcMsg->Buffer;
  88   pStubMsg->BufferEnd = pStubMsg->BufferStart + pStubMsg->BufferLength;
  89   pStubMsg->Buffer = pStubMsg->BufferStart;
  90   pStubMsg->dwStubPhase = PROXY_MARSHAL;
  91 }
  92
  93 /***********************************************************************
  94  *           NdrProxySendReceive [RPCRT4.@]
  95  */
  96 void WINAPI NdrProxySendReceive(void *This,
  97                                PMIDL_STUB_MESSAGE pStubMsg)
  98 {
  99   ULONG Status = 0;
 100   HRESULT hr;
 101
 102   TRACE("(%p,%p)\n", This, pStubMsg);
 103
 104   if (!pStubMsg->pRpcChannelBuffer)
 105   {
 106     WARN("Trying to use disconnected proxy %p\n", This);
 107     RpcRaiseException(RPC_E_DISCONNECTED);
 108   }
 109
 110   pStubMsg->dwStubPhase = PROXY_SENDRECEIVE;
 111   hr = IRpcChannelBuffer_SendReceive(pStubMsg->pRpcChannelBuffer,
 112                                     (RPCOLEMESSAGE*)pStubMsg->RpcMsg,
 113                                     &Status);
 114   pStubMsg->dwStubPhase = PROXY_UNMARSHAL;
 115   pStubMsg->BufferLength = pStubMsg->RpcMsg->BufferLength;
 116   pStubMsg->BufferStart = pStubMsg->RpcMsg->Buffer;
 117   pStubMsg->BufferEnd = pStubMsg->BufferStart + pStubMsg->BufferLength;
 118   pStubMsg->Buffer = pStubMsg->BufferStart;
 119
 120   /* raise exception if call failed */
 121   if (hr == RPC_S_CALL_FAILED) RpcRaiseException(*(DWORD*)pStubMsg->Buffer);
 122   else if (FAILED(hr)) RpcRaiseException(hr);
 123 }
 124
 125 /***********************************************************************
 126  *           NdrProxyFreeBuffer [RPCRT4.@]
 127  */
 128 void WINAPI NdrProxyFreeBuffer(void *This,
 129                               PMIDL_STUB_MESSAGE pStubMsg)
 130 {
 131   HRESULT hr;
 132
 133   TRACE("(%p,%p)\n", This, pStubMsg);
 134   hr = IRpcChannelBuffer_FreeBuffer(pStubMsg->pRpcChannelBuffer,
 135                                    (RPCOLEMESSAGE*)pStubMsg->RpcMsg);
 136 }
 137
 138 /***********************************************************************
 139  *           NdrProxyErrorHandler [RPCRT4.@]
 140  */
 141 HRESULT WINAPI NdrProxyErrorHandler(DWORD dwExceptionCode)
 142 {
 143   FIXME("(0x%08lx): semi-stub\n", dwExceptionCode);
 144   return MAKE_HRESULT(SEVERITY_ERROR, FACILITY_RPC, RPC_S_CALL_FAILED);
 145 }
 146
 147 /***********************************************************************
 148  *           NdrStubInitialize [RPCRT4.@]
 149  */
 150 void WINAPI NdrStubInitialize(PRPC_MESSAGE pRpcMsg,
 151                              PMIDL_STUB_MESSAGE pStubMsg,
 152                              PMIDL_STUB_DESC pStubDescriptor,
 153                              LPRPCCHANNELBUFFER pRpcChannelBuffer)
 154 {
 155   TRACE("(%p,%p,%p,%p)\n", pRpcMsg, pStubMsg, pStubDescriptor, pRpcChannelBuffer);
 156   NdrServerInitializeNew(pRpcMsg, pStubMsg, pStubDescriptor);
 157   pStubMsg->pRpcChannelBuffer = pRpcChannelBuffer;
 158 }
 159
 160 /***********************************************************************
 161  *           NdrStubGetBuffer [RPCRT4.@]
 162  */
 163 void WINAPI NdrStubGetBuffer(LPRPCSTUBBUFFER This,
 164                             LPRPCCHANNELBUFFER pRpcChannelBuffer,
 165                             PMIDL_STUB_MESSAGE pStubMsg)
 166 {
 167   TRACE("(%p,%p)\n", This, pStubMsg);
 168   pStubMsg->pRpcChannelBuffer = pRpcChannelBuffer;
 169   pStubMsg->RpcMsg->BufferLength = pStubMsg->BufferLength;
 170   I_RpcGetBuffer(pStubMsg->RpcMsg); /* ? */
 171   pStubMsg->BufferStart = pStubMsg->RpcMsg->Buffer;
 172   pStubMsg->BufferEnd = pStubMsg->BufferStart + pStubMsg->BufferLength;
 173   pStubMsg->Buffer = pStubMsg->BufferStart;
 174 }
 175
 176 /************************************************************************
 177  *             NdrClientInitializeNew [RPCRT4.@]
 178  */
 179 void WINAPI NdrClientInitializeNew( PRPC_MESSAGE pRpcMessage, PMIDL_STUB_MESSAGE pStubMsg,
 180                                     PMIDL_STUB_DESC pStubDesc, unsigned int ProcNum )
 181 {
 182   TRACE("(pRpcMessage == ^%p, pStubMsg == ^%p, pStubDesc == ^%p, ProcNum == %d)\n",
 183     pRpcMessage, pStubMsg, pStubDesc, ProcNum);
 184
 185   assert( pRpcMessage && pStubMsg && pStubDesc );
 186
 187   memset(pRpcMessage, 0, sizeof(RPC_MESSAGE));
 188
 189   /* not everyone allocates stack space for w2kReserved */
 190   memset(pStubMsg, 0, FIELD_OFFSET(MIDL_STUB_MESSAGE,pCSInfo));
 191
 192   pStubMsg->ReuseBuffer = FALSE;
 193   pStubMsg->IsClient = TRUE;
 194   pStubMsg->StubDesc = pStubDesc;
 195   pStubMsg->pfnAllocate = pStubDesc->pfnAllocate;
 196   pStubMsg->pfnFree = pStubDesc->pfnFree;
 197   pStubMsg->RpcMsg = pRpcMessage;
 198
 199   pRpcMessage->ProcNum = ProcNum;
 200   pRpcMessage->RpcInterfaceInformation = pStubDesc->RpcInterfaceInformation;
 201 }
 202
 203 /***********************************************************************
 204  *             NdrServerInitializeNew [RPCRT4.@]
 205  */
 206 unsigned char* WINAPI NdrServerInitializeNew( PRPC_MESSAGE pRpcMsg, PMIDL_STUB_MESSAGE pStubMsg,
 207                                               PMIDL_STUB_DESC pStubDesc )
 208 {
 209   TRACE("(pRpcMsg == ^%p, pStubMsg == ^%p, pStubDesc == ^%p)\n", pRpcMsg, pStubMsg, pStubDesc);
 210
 211   assert( pRpcMsg && pStubMsg && pStubDesc );
 212
 213   /* not everyone allocates stack space for w2kReserved */
 214   memset(pStubMsg, 0, FIELD_OFFSET(MIDL_STUB_MESSAGE,pCSInfo));
 215
 216   pStubMsg->ReuseBuffer = TRUE;
 217   pStubMsg->IsClient = FALSE;
 218   pStubMsg->StubDesc = pStubDesc;
 219   pStubMsg->pfnAllocate = pStubDesc->pfnAllocate;
 220   pStubMsg->pfnFree = pStubDesc->pfnFree;
 221   pStubMsg->RpcMsg = pRpcMsg;
 222   pStubMsg->Buffer = pStubMsg->BufferStart = pRpcMsg->Buffer;
 223   pStubMsg->BufferLength = pRpcMsg->BufferLength;
 224   pStubMsg->BufferEnd = pStubMsg->Buffer + pStubMsg->BufferLength;
 225
 226   /* FIXME: determine the proper return value */
 227   return NULL;
 228 }
 229
 230 /***********************************************************************
 231  *           NdrGetBuffer [RPCRT4.@]
 232  */
 233 unsigned char *WINAPI NdrGetBuffer(MIDL_STUB_MESSAGE *stubmsg, unsigned long buflen, RPC_BINDING_HANDLE handle)
 234 {
 235   TRACE("(stubmsg == ^%p, buflen == %lu, handle == %p): wild guess.\n", stubmsg, buflen, handle);
 236
 237   assert( stubmsg && stubmsg->RpcMsg );
 238
 239   /* I guess this is our chance to put the binding handle into the RPC_MESSAGE */
 240   stubmsg->RpcMsg->Handle = handle;
 241
 242   stubmsg->RpcMsg->BufferLength = buflen;
 243   if (I_RpcGetBuffer(stubmsg->RpcMsg) != S_OK)
 244     return NULL;
 245
 246   stubmsg->Buffer = stubmsg->BufferStart = stubmsg->RpcMsg->Buffer;
 247   stubmsg->BufferLength = stubmsg->RpcMsg->BufferLength;
 248   stubmsg->BufferEnd = stubmsg->Buffer + stubmsg->BufferLength;
 249   return (stubmsg->Buffer = (unsigned char *)stubmsg->RpcMsg->Buffer);
 250 }
 251 /***********************************************************************
 252  *           NdrFreeBuffer [RPCRT4.@]
 253  */
 254 void WINAPI NdrFreeBuffer(MIDL_STUB_MESSAGE *pStubMsg)
 255 {
 256   TRACE("(pStubMsg == ^%p): wild guess.\n", pStubMsg);
 257   I_RpcFreeBuffer(pStubMsg->RpcMsg);
 258   pStubMsg->BufferLength = 0;
 259   pStubMsg->Buffer = pStubMsg->BufferEnd = (unsigned char *)(pStubMsg->RpcMsg->Buffer = NULL);
 260 }
 261
 262 /************************************************************************
 263  *           NdrSendReceive [RPCRT4.@]
 264  */
 265 unsigned char *WINAPI NdrSendReceive( MIDL_STUB_MESSAGE *stubmsg, unsigned char *buffer  )
 266 {
 267   TRACE("(stubmsg == ^%p, buffer == ^%p)\n", stubmsg, buffer);
 268
 269   /* FIXME: how to handle errors? (raise exception?) */
 270   if (!stubmsg) {
 271     ERR("NULL stub message.  No action taken.\n");
 272     return NULL;
 273   }
 274   if (!stubmsg->RpcMsg) {
 275     ERR("RPC Message not present in stub message.  No action taken.\n");
 276     return NULL;
 277   }
 278
 279   /* FIXME: Seems wrong.  Where should this really come from, and when? */
 280   stubmsg->RpcMsg->DataRepresentation = NDR_LOCAL_DATA_REPRESENTATION;
 281
 282   if (I_RpcSendReceive(stubmsg->RpcMsg) != RPC_S_OK) {
 283     WARN("I_RpcSendReceive did not return success.\n");
 284     /* FIXME: raise exception? */
 285   }
 286
 287   /* FIXME: is this the right return value? */
 288   return NULL;
 289 }