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 <stdio.h>
  26 #include <string.h>
  27 #include <assert.h>
  28
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "winerror.h"
  32 #include "winreg.h"
  33
  34 #include "objbase.h"
  35
  36 #include "rpcproxy.h"
  37
  38 #include "wine/debug.h"
  39
  40 #include "cpsf.h"
  41 #include "ndr_misc.h"
  42 #include "rpcndr.h"
  43
  44 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  45
  46 /***********************************************************************
  47  *           NdrProxyInitialize [RPCRT4.@]
  48  */
  49 void WINAPI NdrProxyInitialize(void *This,
  50                               PRPC_MESSAGE pRpcMsg,
  51                               PMIDL_STUB_MESSAGE pStubMsg,
  52                               PMIDL_STUB_DESC pStubDescriptor,
  53                               unsigned int ProcNum)
  54 {
  55   HRESULT hr;
  56
  57   TRACE("(%p,%p,%p,%p,%d)\n", This, pRpcMsg, pStubMsg, pStubDescriptor, ProcNum);
  58   NdrClientInitializeNew(pRpcMsg, pStubMsg, pStubDescriptor, ProcNum);
  59   if (This) StdProxy_GetChannel(This, &pStubMsg->pRpcChannelBuffer);
  60   if (pStubMsg->pRpcChannelBuffer) {
  61     hr = IRpcChannelBuffer_GetDestCtx(pStubMsg->pRpcChannelBuffer,
  62                                      &pStubMsg->dwDestContext,
  63                                      &pStubMsg->pvDestContext);
  64   }
  65   TRACE("channel=%p\n", pStubMsg->pRpcChannelBuffer);
  66 }
  67
  68 /***********************************************************************
  69  *           NdrProxyGetBuffer [RPCRT4.@]
  70  */
  71 void WINAPI NdrProxyGetBuffer(void *This,
  72                              PMIDL_STUB_MESSAGE pStubMsg)
  73 {
  74   HRESULT hr;
  75   const IID *riid = NULL;
  76
  77   TRACE("(%p,%p)\n", This, pStubMsg);
  78   pStubMsg->RpcMsg->BufferLength = pStubMsg->BufferLength;
  79   pStubMsg->dwStubPhase = PROXY_GETBUFFER;
  80   hr = StdProxy_GetIID(This, &riid);
  81   hr = IRpcChannelBuffer_GetBuffer(pStubMsg->pRpcChannelBuffer,
  82                                   (RPCOLEMESSAGE*)pStubMsg->RpcMsg,
  83                                   riid);
  84   pStubMsg->BufferStart = pStubMsg->RpcMsg->Buffer;
  85   pStubMsg->BufferEnd = pStubMsg->BufferStart + pStubMsg->BufferLength;
  86   pStubMsg->Buffer = pStubMsg->BufferStart;
  87   pStubMsg->dwStubPhase = PROXY_MARSHAL;
  88 }
  89
  90 /***********************************************************************
  91  *           NdrProxySendReceive [RPCRT4.@]
  92  */
  93 void WINAPI NdrProxySendReceive(void *This,
  94                                PMIDL_STUB_MESSAGE pStubMsg)
  95 {
  96   ULONG Status = 0;
  97   HRESULT hr;
  98
  99   TRACE("(%p,%p)\n", This, pStubMsg);
 100   pStubMsg->dwStubPhase = PROXY_SENDRECEIVE;
 101   hr = IRpcChannelBuffer_SendReceive(pStubMsg->pRpcChannelBuffer,
 102                                     (RPCOLEMESSAGE*)pStubMsg->RpcMsg,
 103                                     &Status);
 104   pStubMsg->dwStubPhase = PROXY_UNMARSHAL;
 105   pStubMsg->BufferLength = pStubMsg->RpcMsg->BufferLength;
 106   pStubMsg->BufferStart = pStubMsg->RpcMsg->Buffer;
 107   pStubMsg->BufferEnd = pStubMsg->BufferStart + pStubMsg->BufferLength;
 108   pStubMsg->Buffer = pStubMsg->BufferStart;
 109 }
 110
 111 /***********************************************************************
 112  *           NdrProxyFreeBuffer [RPCRT4.@]
 113  */
 114 void WINAPI NdrProxyFreeBuffer(void *This,
 115                               PMIDL_STUB_MESSAGE pStubMsg)
 116 {
 117   HRESULT hr;
 118
 119   TRACE("(%p,%p)\n", This, pStubMsg);
 120   hr = IRpcChannelBuffer_FreeBuffer(pStubMsg->pRpcChannelBuffer,
 121                                    (RPCOLEMESSAGE*)pStubMsg->RpcMsg);
 122 }
 123
 124 /***********************************************************************
 125  *           NdrStubInitialize [RPCRT4.@]
 126  */
 127 void WINAPI NdrStubInitialize(PRPC_MESSAGE pRpcMsg,
 128                              PMIDL_STUB_MESSAGE pStubMsg,
 129                              PMIDL_STUB_DESC pStubDescriptor,
 130                              LPRPCCHANNELBUFFER pRpcChannelBuffer)
 131 {
 132   TRACE("(%p,%p,%p,%p)\n", pRpcMsg, pStubMsg, pStubDescriptor, pRpcChannelBuffer);
 133   NdrServerInitializeNew(pRpcMsg, pStubMsg, pStubDescriptor);
 134   pStubMsg->pRpcChannelBuffer = pRpcChannelBuffer;
 135 }
 136
 137 /***********************************************************************
 138  *           NdrStubGetBuffer [RPCRT4.@]
 139  */
 140 void WINAPI NdrStubGetBuffer(LPRPCSTUBBUFFER This,
 141                             LPRPCCHANNELBUFFER pRpcChannelBuffer,
 142                             PMIDL_STUB_MESSAGE pStubMsg)
 143 {
 144   TRACE("(%p,%p)\n", This, pStubMsg);
 145   pStubMsg->pRpcChannelBuffer = pRpcChannelBuffer;
 146   pStubMsg->RpcMsg->BufferLength = pStubMsg->BufferLength;
 147   I_RpcGetBuffer(pStubMsg->RpcMsg); /* ? */
 148   pStubMsg->BufferStart = pStubMsg->RpcMsg->Buffer;
 149   pStubMsg->BufferEnd = pStubMsg->BufferStart + pStubMsg->BufferLength;
 150   pStubMsg->Buffer = pStubMsg->BufferStart;
 151 }
 152
 153 /************************************************************************
 154  *             NdrClientInitializeNew [RPCRT4.@]
 155  */
 156 void WINAPI NdrClientInitializeNew( PRPC_MESSAGE pRpcMessage, PMIDL_STUB_MESSAGE pStubMsg,
 157                                     PMIDL_STUB_DESC pStubDesc, unsigned int ProcNum )
 158 {
 159   TRACE("(pRpcMessage == ^%p, pStubMsg == ^%p, pStubDesc == ^%p, ProcNum == %d)\n",
 160     pRpcMessage, pStubMsg, pStubDesc, ProcNum);
 161
 162   assert( pRpcMessage && pStubMsg && pStubDesc );
 163
 164   memset(pRpcMessage, 0, sizeof(RPC_MESSAGE));
 165   memset(pStubMsg, 0, sizeof(MIDL_STUB_MESSAGE));
 166
 167   pStubMsg->ReuseBuffer = FALSE;
 168   pStubMsg->IsClient = TRUE;
 169   pStubMsg->StubDesc = pStubDesc;
 170   pStubMsg->pfnAllocate = pStubDesc->pfnAllocate;
 171   pStubMsg->pfnFree = pStubDesc->pfnFree;
 172   pStubMsg->RpcMsg = pRpcMessage;
 173
 174   pRpcMessage->ProcNum = ProcNum;
 175   pRpcMessage->RpcInterfaceInformation = pStubDesc->RpcInterfaceInformation;
 176 }
 177
 178 /***********************************************************************
 179  *             NdrServerInitializeNew [RPCRT4.@]
 180  */
 181 unsigned char* WINAPI NdrServerInitializeNew( PRPC_MESSAGE pRpcMsg, PMIDL_STUB_MESSAGE pStubMsg,
 182                                               PMIDL_STUB_DESC pStubDesc )
 183 {
 184   TRACE("(pRpcMsg == ^%p, pStubMsg == ^%p, pStubDesc == ^%p)\n", pRpcMsg, pStubMsg, pStubDesc);
 185
 186   assert( pRpcMsg && pStubMsg && pStubDesc );
 187
 188   memset(pStubMsg, 0, sizeof(MIDL_STUB_MESSAGE));
 189
 190   pStubMsg->ReuseBuffer = TRUE;
 191   pStubMsg->IsClient = FALSE;
 192   pStubMsg->StubDesc = pStubDesc;
 193   pStubMsg->pfnAllocate = pStubDesc->pfnAllocate;
 194   pStubMsg->pfnFree = pStubDesc->pfnFree;
 195   pStubMsg->RpcMsg = pRpcMsg;
 196   pStubMsg->Buffer = pStubMsg->BufferStart = pRpcMsg->Buffer;
 197   pStubMsg->BufferLength = pRpcMsg->BufferLength;
 198   pStubMsg->BufferEnd = pStubMsg->Buffer + pStubMsg->BufferLength;
 199
 200   /* FIXME: determine the proper return value */
 201   return NULL;
 202 }
 203
 204 /***********************************************************************
 205  *           NdrGetBuffer [RPCRT4.@]
 206  */
 207 unsigned char *WINAPI NdrGetBuffer(MIDL_STUB_MESSAGE *stubmsg, unsigned long buflen, RPC_BINDING_HANDLE handle)
 208 {
 209   TRACE("(stubmsg == ^%p, buflen == %lu, handle == %p): wild guess.\n", stubmsg, buflen, handle);
 210
 211   assert( stubmsg && stubmsg->RpcMsg );
 212
 213   /* I guess this is our chance to put the binding handle into the RPC_MESSAGE */
 214   stubmsg->RpcMsg->Handle = handle;
 215
 216   stubmsg->RpcMsg->BufferLength = buflen;
 217   if (I_RpcGetBuffer(stubmsg->RpcMsg) != S_OK)
 218     return NULL;
 219
 220   stubmsg->Buffer = stubmsg->BufferStart = stubmsg->RpcMsg->Buffer;
 221   stubmsg->BufferLength = stubmsg->RpcMsg->BufferLength;
 222   stubmsg->BufferEnd = stubmsg->Buffer + stubmsg->BufferLength;
 223   return (stubmsg->Buffer = (unsigned char *)stubmsg->RpcMsg->Buffer);
 224 }
 225 /***********************************************************************
 226  *           NdrFreeBuffer [RPCRT4.@]
 227  */
 228 void WINAPI NdrFreeBuffer(MIDL_STUB_MESSAGE *pStubMsg)
 229 {
 230   TRACE("(pStubMsg == ^%p): wild guess.\n", pStubMsg);
 231   I_RpcFreeBuffer(pStubMsg->RpcMsg);
 232   pStubMsg->BufferLength = 0;
 233   pStubMsg->Buffer = pStubMsg->BufferEnd = (unsigned char *)(pStubMsg->RpcMsg->Buffer = NULL);
 234 }
 235
 236 /************************************************************************
 237  *           NdrSendReceive [RPCRT4.@]
 238  */
 239 unsigned char *WINAPI NdrSendReceive( MIDL_STUB_MESSAGE *stubmsg, unsigned char *buffer  )
 240 {
 241   TRACE("(stubmsg == ^%p, buffer == ^%p)\n", stubmsg, buffer);
 242
 243   /* FIXME: how to handle errors? (raise exception?) */
 244   if (!stubmsg) {
 245     ERR("NULL stub message.  No action taken.\n");
 246     return NULL;
 247   }
 248   if (!stubmsg->RpcMsg) {
 249     ERR("RPC Message not present in stub message.  No action taken.\n");
 250     return NULL;
 251   }
 252   if (stubmsg->RpcMsg->Buffer != buffer) {
 253     ERR("Ambiguous buffer doesn't match rpc message buffer.  No action taken.\n");
 254     return NULL;
 255   }
 256
 257   /* not sure where MS does this; for now I'll stick it here */
 258   stubmsg->RpcMsg->DataRepresentation = NDR_LOCAL_DATA_REPRESENTATION;
 259
 260   if (I_RpcSendReceive(stubmsg->RpcMsg) != RPC_S_OK) {
 261     WARN("I_RpcSendReceive did not return success.\n");
 262   }
 263
 264   /* FIXME: is this the right return value? */
 265   return NULL;
 266 }