dlls/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   pStubMsg->dwStubPhase = PROXY_SENDRECEIVE;
 104   hr = IRpcChannelBuffer_SendReceive(pStubMsg->pRpcChannelBuffer,
 105                                     (RPCOLEMESSAGE*)pStubMsg->RpcMsg,
 106                                     &Status);
 107   pStubMsg->dwStubPhase = PROXY_UNMARSHAL;
 108   pStubMsg->BufferLength = pStubMsg->RpcMsg->BufferLength;
 109   pStubMsg->BufferStart = pStubMsg->RpcMsg->Buffer;
 110   pStubMsg->BufferEnd = pStubMsg->BufferStart + pStubMsg->BufferLength;
 111   pStubMsg->Buffer = pStubMsg->BufferStart;
 112
 113   /* raise exception if call failed */
 114   if (hr == RPC_S_CALL_FAILED) RpcRaiseException(*(DWORD*)pStubMsg->Buffer);
 115   else if (FAILED(hr)) RpcRaiseException(hr);
 116 }
 117
 118 /***********************************************************************
 119  *           NdrProxyFreeBuffer [RPCRT4.@]
 120  */
 121 void WINAPI NdrProxyFreeBuffer(void *This,
 122                               PMIDL_STUB_MESSAGE pStubMsg)
 123 {
 124   HRESULT hr;
 125
 126   TRACE("(%p,%p)\n", This, pStubMsg);
 127   hr = IRpcChannelBuffer_FreeBuffer(pStubMsg->pRpcChannelBuffer,
 128                                    (RPCOLEMESSAGE*)pStubMsg->RpcMsg);
 129 }
 130
 131 /***********************************************************************
 132  *           NdrProxyErrorHandler [RPCRT4.@]
 133  */
 134 HRESULT WINAPI NdrProxyErrorHandler(DWORD dwExceptionCode)
 135 {
 136   FIXME("(0x%08lx): semi-stub\n", dwExceptionCode);
 137   return MAKE_HRESULT(SEVERITY_ERROR, FACILITY_RPC, RPC_S_CALL_FAILED);
 138 }
 139
 140 /***********************************************************************
 141  *           NdrStubInitialize [RPCRT4.@]
 142  */
 143 void WINAPI NdrStubInitialize(PRPC_MESSAGE pRpcMsg,
 144                              PMIDL_STUB_MESSAGE pStubMsg,
 145                              PMIDL_STUB_DESC pStubDescriptor,
 146                              LPRPCCHANNELBUFFER pRpcChannelBuffer)
 147 {
 148   TRACE("(%p,%p,%p,%p)\n", pRpcMsg, pStubMsg, pStubDescriptor, pRpcChannelBuffer);
 149   NdrServerInitializeNew(pRpcMsg, pStubMsg, pStubDescriptor);
 150   pStubMsg->pRpcChannelBuffer = pRpcChannelBuffer;
 151 }
 152
 153 /***********************************************************************
 154  *           NdrStubGetBuffer [RPCRT4.@]
 155  */
 156 void WINAPI NdrStubGetBuffer(LPRPCSTUBBUFFER This,
 157                             LPRPCCHANNELBUFFER pRpcChannelBuffer,
 158                             PMIDL_STUB_MESSAGE pStubMsg)
 159 {
 160   TRACE("(%p,%p)\n", This, pStubMsg);
 161   pStubMsg->pRpcChannelBuffer = pRpcChannelBuffer;
 162   pStubMsg->RpcMsg->BufferLength = pStubMsg->BufferLength;
 163   I_RpcGetBuffer(pStubMsg->RpcMsg); /* ? */
 164   pStubMsg->BufferStart = pStubMsg->RpcMsg->Buffer;
 165   pStubMsg->BufferEnd = pStubMsg->BufferStart + pStubMsg->BufferLength;
 166   pStubMsg->Buffer = pStubMsg->BufferStart;
 167 }
 168
 169 /************************************************************************
 170  *             NdrClientInitializeNew [RPCRT4.@]
 171  */
 172 void WINAPI NdrClientInitializeNew( PRPC_MESSAGE pRpcMessage, PMIDL_STUB_MESSAGE pStubMsg,
 173                                     PMIDL_STUB_DESC pStubDesc, unsigned int ProcNum )
 174 {
 175   TRACE("(pRpcMessage == ^%p, pStubMsg == ^%p, pStubDesc == ^%p, ProcNum == %d)\n",
 176     pRpcMessage, pStubMsg, pStubDesc, ProcNum);
 177
 178   assert( pRpcMessage && pStubMsg && pStubDesc );
 179
 180   memset(pRpcMessage, 0, sizeof(RPC_MESSAGE));
 181
 182   /* not everyone allocates stack space for w2kReserved */
 183   memset(pStubMsg, 0, FIELD_OFFSET(MIDL_STUB_MESSAGE,pCSInfo));
 184
 185   pStubMsg->ReuseBuffer = FALSE;
 186   pStubMsg->IsClient = TRUE;
 187   pStubMsg->StubDesc = pStubDesc;
 188   pStubMsg->pfnAllocate = pStubDesc->pfnAllocate;
 189   pStubMsg->pfnFree = pStubDesc->pfnFree;
 190   pStubMsg->RpcMsg = pRpcMessage;
 191
 192   pRpcMessage->ProcNum = ProcNum;
 193   pRpcMessage->RpcInterfaceInformation = pStubDesc->RpcInterfaceInformation;
 194 }
 195
 196 /***********************************************************************
 197  *             NdrServerInitializeNew [RPCRT4.@]
 198  */
 199 unsigned char* WINAPI NdrServerInitializeNew( PRPC_MESSAGE pRpcMsg, PMIDL_STUB_MESSAGE pStubMsg,
 200                                               PMIDL_STUB_DESC pStubDesc )
 201 {
 202   TRACE("(pRpcMsg == ^%p, pStubMsg == ^%p, pStubDesc == ^%p)\n", pRpcMsg, pStubMsg, pStubDesc);
 203
 204   assert( pRpcMsg && pStubMsg && pStubDesc );
 205
 206   /* not everyone allocates stack space for w2kReserved */
 207   memset(pStubMsg, 0, FIELD_OFFSET(MIDL_STUB_MESSAGE,pCSInfo));
 208
 209   pStubMsg->ReuseBuffer = TRUE;
 210   pStubMsg->IsClient = FALSE;
 211   pStubMsg->StubDesc = pStubDesc;
 212   pStubMsg->pfnAllocate = pStubDesc->pfnAllocate;
 213   pStubMsg->pfnFree = pStubDesc->pfnFree;
 214   pStubMsg->RpcMsg = pRpcMsg;
 215   pStubMsg->Buffer = pStubMsg->BufferStart = pRpcMsg->Buffer;
 216   pStubMsg->BufferLength = pRpcMsg->BufferLength;
 217   pStubMsg->BufferEnd = pStubMsg->Buffer + pStubMsg->BufferLength;
 218
 219   /* FIXME: determine the proper return value */
 220   return NULL;
 221 }
 222
 223 /***********************************************************************
 224  *           NdrGetBuffer [RPCRT4.@]
 225  */
 226 unsigned char *WINAPI NdrGetBuffer(MIDL_STUB_MESSAGE *stubmsg, unsigned long buflen, RPC_BINDING_HANDLE handle)
 227 {
 228   TRACE("(stubmsg == ^%p, buflen == %lu, handle == %p): wild guess.\n", stubmsg, buflen, handle);
 229
 230   assert( stubmsg && stubmsg->RpcMsg );
 231
 232   /* I guess this is our chance to put the binding handle into the RPC_MESSAGE */
 233   stubmsg->RpcMsg->Handle = handle;
 234
 235   stubmsg->RpcMsg->BufferLength = buflen;
 236   if (I_RpcGetBuffer(stubmsg->RpcMsg) != S_OK)
 237     return NULL;
 238
 239   stubmsg->Buffer = stubmsg->BufferStart = stubmsg->RpcMsg->Buffer;
 240   stubmsg->BufferLength = stubmsg->RpcMsg->BufferLength;
 241   stubmsg->BufferEnd = stubmsg->Buffer + stubmsg->BufferLength;
 242   return (stubmsg->Buffer = (unsigned char *)stubmsg->RpcMsg->Buffer);
 243 }
 244 /***********************************************************************
 245  *           NdrFreeBuffer [RPCRT4.@]
 246  */
 247 void WINAPI NdrFreeBuffer(MIDL_STUB_MESSAGE *pStubMsg)
 248 {
 249   TRACE("(pStubMsg == ^%p): wild guess.\n", pStubMsg);
 250   I_RpcFreeBuffer(pStubMsg->RpcMsg);
 251   pStubMsg->BufferLength = 0;
 252   pStubMsg->Buffer = pStubMsg->BufferEnd = (unsigned char *)(pStubMsg->RpcMsg->Buffer = NULL);
 253 }
 254
 255 /************************************************************************
 256  *           NdrSendReceive [RPCRT4.@]
 257  */
 258 unsigned char *WINAPI NdrSendReceive( MIDL_STUB_MESSAGE *stubmsg, unsigned char *buffer  )
 259 {
 260   TRACE("(stubmsg == ^%p, buffer == ^%p)\n", stubmsg, buffer);
 261
 262   /* FIXME: how to handle errors? (raise exception?) */
 263   if (!stubmsg) {
 264     ERR("NULL stub message.  No action taken.\n");
 265     return NULL;
 266   }
 267   if (!stubmsg->RpcMsg) {
 268     ERR("RPC Message not present in stub message.  No action taken.\n");
 269     return NULL;
 270   }
 271
 272   /* FIXME: Seems wrong.  Where should this really come from, and when? */
 273   stubmsg->RpcMsg->DataRepresentation = NDR_LOCAL_DATA_REPRESENTATION;
 274
 275   if (I_RpcSendReceive(stubmsg->RpcMsg) != RPC_S_OK) {
 276     WARN("I_RpcSendReceive did not return success.\n");
 277     /* FIXME: raise exception? */
 278   }
 279
 280   /* FIXME: is this the right return value? */
 281   return NULL;
 282 }