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rpcrt4: Improve ReadVariance. 

Extend ReadVariance to read the offset as well as the actual count,
since these always come in pairs.
Handle the variance not being present in ReadVariance and always call
it from the unmarshalling functions to simplify the code there and
also to fix a bug where the format pointer wasn't advanced properly
for complex arrays (introduced in the previous patch when implementing
variance).
This commit is contained in:
Robert Shearman 2006-01-09 17:21:01 +01:00 committed by Alexandre Julliard
parent 2e875d5d35
commit 1926b6da63
1 changed files with 16 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
dlls/rpcrt4/ndr_marshall.c
View File

@ -315,9 +315,21 @@ PFORMAT_STRING ReadConformance(MIDL_STUB_MESSAGE *pStubMsg, PFORMAT_STRING pForm
static inline PFORMAT_STRING ReadVariance(MIDL_STUB_MESSAGE *pStubMsg, PFORMAT_STRING pFormat)
{
if (!IsConformanceOrVariancePresent(pFormat))
{
pStubMsg->Offset = 0;
pStubMsg->ActualCount = pStubMsg->MaxCount;
goto done;
}
pStubMsg->Offset = NDR_LOCAL_UINT32_READ(pStubMsg->Buffer);
pStubMsg->Buffer += 4;
TRACE("offset is %ld\n", pStubMsg->Offset);
pStubMsg->ActualCount = NDR_LOCAL_UINT32_READ(pStubMsg->Buffer);
pStubMsg->Buffer += 4;
TRACE("unmarshalled variance is %ld\n", pStubMsg->ActualCount);
TRACE("variance is %ld\n", pStubMsg->ActualCount);
done:
return pFormat+4;
}
@ -2008,7 +2020,6 @@ unsigned char* WINAPI NdrConformantVaryingArrayUnmarshall( PMIDL_STUB_MESSAGE pS
PFORMAT_STRING pFormat,
unsigned char fMustAlloc )
{
DWORD offset;
DWORD esize = *(const WORD*)(pFormat+2);
TRACE("(%p, %p, %p, %d)\n", pStubMsg, ppMemory, pFormat, fMustAlloc);
@ -2020,13 +2031,11 @@ unsigned char* WINAPI NdrConformantVaryingArrayUnmarshall( PMIDL_STUB_MESSAGE pS
return NULL;
}
pFormat = ReadConformance(pStubMsg, pFormat);
offset = NDR_LOCAL_UINT32_READ(pStubMsg->Buffer);
pStubMsg->Buffer += 4;
pFormat = ReadVariance(pStubMsg, pFormat);
if (!*ppMemory || fMustAlloc)
*ppMemory = NdrAllocate(pStubMsg, pStubMsg->MaxCount * esize);
memcpy(*ppMemory + offset, pStubMsg->Buffer, pStubMsg->ActualCount * esize);
memcpy(*ppMemory + pStubMsg->Offset, pStubMsg->Buffer, pStubMsg->ActualCount * esize);
pStubMsg->Buffer += pStubMsg->ActualCount * esize;
EmbeddedPointerUnmarshall(pStubMsg, ppMemory, pFormat, fMustAlloc);
@ -2141,7 +2150,7 @@ unsigned char * WINAPI NdrComplexArrayUnmarshall(PMIDL_STUB_MESSAGE pStubMsg,
PFORMAT_STRING pFormat,
unsigned char fMustAlloc)
{
ULONG offset, count, esize;
ULONG count, esize;
unsigned char *pMemory;
TRACE("(%p,%p,%p,%d)\n", pStubMsg, ppMemory, pFormat, fMustAlloc);
@ -2156,19 +2165,7 @@ unsigned char * WINAPI NdrComplexArrayUnmarshall(PMIDL_STUB_MESSAGE pStubMsg,
pFormat += 4;
pFormat = ReadConformance(pStubMsg, pFormat);
TRACE("conformance = %ld\n", pStubMsg->MaxCount);
if (IsConformanceOrVariancePresent(pFormat))
{
offset = NDR_LOCAL_UINT32_READ(pStubMsg->Buffer);
pStubMsg->Buffer += 4;
pFormat = ReadVariance(pStubMsg, pFormat);
TRACE("variance = %ld\n", pStubMsg->ActualCount);
}
else
{
offset = 0;
pStubMsg->ActualCount = pStubMsg->MaxCount;
}
pFormat = ReadVariance(pStubMsg, pFormat);
esize = ComplexStructSize(pStubMsg, pFormat);