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rpcrt4: Use the buffer passed in as an argument and don't increment 

the buffer in the MIDL_STUB_MESSAGE in the inner pointer
marshalling/unmarshalling routines as these can be used for embedded
pointers, which handle the allocating or finding of the buffer
themselves. Do the incrementing in the outer
NdrPointerMarshall/Unmarshall/BufferSize routines instead.
This commit is contained in:
Robert Shearman 2006-05-10 13:13:45 +01:00 committed by Alexandre Julliard
parent c3a087eb45
commit ababfdef82
1 changed files with 45 additions and 10 deletions
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55
dlls/rpcrt4/ndr_marshall.c
View File

@ -754,8 +754,7 @@ void WINAPI PointerMarshall(PMIDL_STUB_MESSAGE pStubMsg,
case RPC_FC_UP: /* unique pointer */
case RPC_FC_OP: /* object pointer - same as unique here */
TRACE("writing %p to buffer\n", Pointer);
NDR_LOCAL_UINT32_WRITE(pStubMsg->Buffer, (unsigned long)Pointer);
pStubMsg->Buffer += 4;
NDR_LOCAL_UINT32_WRITE(Buffer, (unsigned long)Pointer);
break;
case RPC_FC_FP:
default:
@ -803,12 +802,12 @@ void WINAPI PointerUnmarshall(PMIDL_STUB_MESSAGE pStubMsg,
pointer_id = ~0UL;
break;
case RPC_FC_UP: /* unique pointer */
pointer_id = NDR_LOCAL_UINT32_READ(pStubMsg->Buffer);
pStubMsg->Buffer += 4;
pointer_id = NDR_LOCAL_UINT32_READ(Buffer);
TRACE("pointer_id is 0x%08lx\n", pointer_id);
break;
case RPC_FC_OP: /* object pointer - we must free data before overwriting it */
pointer_id = NDR_LOCAL_UINT32_READ(pStubMsg->Buffer);
pStubMsg->Buffer += 4;
pointer_id = NDR_LOCAL_UINT32_READ(Buffer);
TRACE("pointer_id is 0x%08lx\n", pointer_id);
if (*pPointer)
FIXME("free object pointer %p\n", *pPointer);
break;
@ -855,7 +854,6 @@ void WINAPI PointerBufferSize(PMIDL_STUB_MESSAGE pStubMsg,
break;
case RPC_FC_OP:
case RPC_FC_UP:
pStubMsg->BufferLength += 4;
/* NULL pointer has no further representation */
if (!Pointer)
return;
@ -1285,9 +1283,22 @@ unsigned char * WINAPI NdrPointerMarshall(PMIDL_STUB_MESSAGE pStubMsg,
unsigned char *pMemory,
PFORMAT_STRING pFormat)
{
unsigned char *Buffer;
TRACE("(%p,%p,%p)\n", pStubMsg, pMemory, pFormat);
pStubMsg->BufferMark = pStubMsg->Buffer;
/* incremement the buffer here instead of in PointerMarshall,
* as that is used by embedded pointers which already handle the incrementing
* the buffer, and shouldn't write any additional pointer data to the wire */
if (*pFormat != RPC_FC_RP)
{
ALIGN_POINTER(pStubMsg->Buffer, 4);
Buffer = pStubMsg->Buffer;
pStubMsg->Buffer += 4;
}
else
Buffer = pStubMsg->Buffer;
PointerMarshall(pStubMsg, pStubMsg->Buffer, pMemory, pFormat);
STD_OVERFLOW_CHECK(pStubMsg);
@ -1303,10 +1314,24 @@ unsigned char * WINAPI NdrPointerUnmarshall(PMIDL_STUB_MESSAGE pStubMsg,
PFORMAT_STRING pFormat,
unsigned char fMustAlloc)
{
unsigned char *Buffer;
TRACE("(%p,%p,%p,%d)\n", pStubMsg, ppMemory, pFormat, fMustAlloc);
pStubMsg->BufferMark = pStubMsg->Buffer;
PointerUnmarshall(pStubMsg, pStubMsg->Buffer, ppMemory, pFormat, fMustAlloc);
/* incremement the buffer here instead of in PointerUnmarshall,
* as that is used by embedded pointers which already handle the incrementing
* the buffer, and shouldn't read any additional pointer data from the
* buffer */
if (*pFormat != RPC_FC_RP)
{
ALIGN_POINTER(pStubMsg->Buffer, 4);
Buffer = pStubMsg->Buffer;
pStubMsg->Buffer += 4;
}
else
Buffer = pStubMsg->Buffer;
PointerUnmarshall(pStubMsg, Buffer, ppMemory, pFormat, fMustAlloc);
return NULL;
}
@ -1319,6 +1344,16 @@ void WINAPI NdrPointerBufferSize(PMIDL_STUB_MESSAGE pStubMsg,
PFORMAT_STRING pFormat)
{
TRACE("(%p,%p,%p)\n", pStubMsg, pMemory, pFormat);
/* incremement the buffer length here instead of in PointerBufferSize,
* as that is used by embedded pointers which already handle the buffer
* length, and shouldn't write anything more to the wire */
if (*pFormat != RPC_FC_RP)
{
ALIGN_LENGTH(pStubMsg->BufferLength, 4);
pStubMsg->BufferLength += 4;
}
PointerBufferSize(pStubMsg, pMemory, pFormat);
}