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#include "main.h"
#include "./enumXmlBuffer.h"
#include "./service.h"
#include "./ifc_omservicehost.h"
#include "./ifc_omstorage.h"
#include "./ifc_wasabihelper.h"
#include "../xml/obj_xml.h"
#include <shlwapi.h>
#include <strsafe.h>
#define XMLSIG "<?xml"
#define XMLSIG_LEN 5
ULONG ref;
const void *buffer;
size_t bufferSize;
size_t cursor;
obj_xml *reader;
INT readerError;
XmlResponseParser parser;
Dispatchable *bufferOwner;
EnumXmlBuffer::EnumXmlBuffer(obj_xml *xmlReader, const void *buffer, size_t bufferSize, Dispatchable *bufferOwner, ifc_omservicehost *serviceHost)
: ref(1), buffer(buffer), bufferSize(bufferSize), cursor(0), reader(xmlReader), readerError(OBJ_XML_SUCCESS), bufferOwner(bufferOwner)
{
if (NULL != reader)
reader->AddRef();
if (NULL != bufferOwner)
bufferOwner->AddRef();
parser.Initialize(reader, serviceHost);
}
EnumXmlBuffer::~EnumXmlBuffer()
{
parser.Finish();
if (NULL != reader)
{
if (OBJ_XML_SUCCESS == readerError)
{
reader->xmlreader_feed(0, 0);
}
reader->xmlreader_close();
ifc_wasabihelper *wasabi;
if (SUCCEEDED(Plugin_GetWasabiHelper(&wasabi)))
{
wasabi->ReleaseWasabiInterface(&obj_xmlGUID, reader);
wasabi->Release();
}
}
if (NULL != bufferOwner)
bufferOwner->Release();
}
HRESULT EnumXmlBuffer::CheckXmlHeader(const void *buffer, size_t bufferSize)
{
if (NULL == buffer)
return E_INVALIDARG;
if (bufferSize >= XMLSIG_LEN)
{
if (CSTR_EQUAL == CompareStringA(CSTR_INVARIANT, NORM_IGNORECASE, XMLSIG, XMLSIG_LEN, (LPSTR)buffer, XMLSIG_LEN) ||
CSTR_EQUAL == CompareStringW(CSTR_INVARIANT, NORM_IGNORECASE, WTEXT(XMLSIG), XMLSIG_LEN, (LPWSTR)buffer, XMLSIG_LEN))
{
return S_OK;
}
}
return OMSTORAGE_E_UNKNOWN_FORMAT;
}
HRESULT EnumXmlBuffer::CreateInstance(const void *buffer, size_t bufferSize, Dispatchable *bufferOwner, ifc_omservicehost *host, EnumXmlBuffer **instance)
{
if (NULL == instance) return E_POINTER;
*instance = NULL;
HRESULT hr = CheckXmlHeader(buffer, bufferSize);
if (SUCCEEDED(hr))
{
ifc_wasabihelper *wasabi;
hr = Plugin_GetWasabiHelper(&wasabi);
if (SUCCEEDED(hr))
{
obj_xml *reader;
wasabi->QueryWasabiInterface(&obj_xmlGUID, (void**)&reader);
if (NULL != reader && OBJ_XML_SUCCESS == reader->xmlreader_open())
{
*instance = new EnumXmlBuffer(reader, buffer, bufferSize, bufferOwner, host);
if (NULL == *instance)
{
hr = E_OUTOFMEMORY;
// reader stil has no support for AddRef()/Release()
wasabi->ReleaseWasabiInterface(&obj_xmlGUID, reader);
}
reader->Release();
}
else
{
hr = E_UNEXPECTED;
}
wasabi->Release();
}
}
return hr;
}
size_t EnumXmlBuffer::AddRef()
{
return InterlockedIncrement((LONG*)&ref);
}
size_t EnumXmlBuffer::Release()
{
if (0 == ref)
return ref;
LONG r = InterlockedDecrement((LONG*)&ref);
if (0 == r)
delete(this);
return r;
}
int EnumXmlBuffer::QueryInterface(GUID interface_guid, void **object)
{
if (NULL == object) return E_POINTER;
if (IsEqualIID(interface_guid, IFC_OmServiceEnum))
*object = static_cast<ifc_omserviceenum*>(this);
else if (IsEqualIID(interface_guid, IFC_OmXmlServiceEnum))
*object = static_cast<ifc_omxmlserviceenum*>(this);
else
{
*object = NULL;
return E_NOINTERFACE;
}
if (NULL == *object)
return E_UNEXPECTED;
AddRef();
return S_OK;
}
HRESULT EnumXmlBuffer::Next(ULONG listSize, ifc_omservice **elementList, ULONG *elementCount)
{
if(NULL != elementCount)
*elementCount = 0;
if (0 == listSize || NULL == elementList)
return E_INVALIDARG;
ULONG counter = 0;
HRESULT hr = S_OK;
ifc_omservice *service;
while(counter < listSize)
{
hr = parser.PeekService(&service);
if (FAILED(hr)) return hr;
if (S_OK == hr)
{
elementList[counter] = service;
counter++;
}
else
{
if (cursor < bufferSize)
{
readerError = reader->xmlreader_feed((BYTE*)buffer + cursor, bufferSize - cursor);
if (OBJ_XML_SUCCESS != readerError) return E_FAIL;
cursor = bufferSize;
}
else
{
if (OBJ_XML_SUCCESS == readerError)
reader->xmlreader_feed(0, 0);
break;
}
}
}
if(NULL != elementCount)
*elementCount = counter;
return (counter > 0) ? S_OK : S_FALSE;
}
HRESULT EnumXmlBuffer::Reset(void)
{
cursor = 0;
readerError = OBJ_XML_SUCCESS;
reader->xmlreader_reset();
parser.Reset();
return E_NOTIMPL;
}
HRESULT EnumXmlBuffer::Skip(ULONG elementCount)
{
return E_NOTIMPL;
}
HRESULT EnumXmlBuffer::GetStatusCode(UINT *code)
{
return parser.GetCode(code);
}
HRESULT EnumXmlBuffer::GetStatusText(LPWSTR pszBuffer, UINT cchBufferMax)
{
return parser.GetText(pszBuffer, cchBufferMax);
}
#define CBCLASS EnumXmlBuffer
START_MULTIPATCH;
START_PATCH(MPIID_OMSERVICEENUM)
M_CB(MPIID_OMSERVICEENUM, ifc_omserviceenum, ADDREF, AddRef);
M_CB(MPIID_OMSERVICEENUM, ifc_omserviceenum, RELEASE, Release);
M_CB(MPIID_OMSERVICEENUM, ifc_omserviceenum, QUERYINTERFACE, QueryInterface);
M_CB(MPIID_OMSERVICEENUM, ifc_omserviceenum, API_NEXT, Next);
M_CB(MPIID_OMSERVICEENUM, ifc_omserviceenum, API_RESET, Reset);
M_CB(MPIID_OMSERVICEENUM, ifc_omserviceenum, API_SKIP, Skip);
NEXT_PATCH(MPIID_OMXMLSERVICEENUM)
M_CB(MPIID_OMXMLSERVICEENUM, ifc_omxmlserviceenum, ADDREF, AddRef);
M_CB(MPIID_OMXMLSERVICEENUM, ifc_omxmlserviceenum, RELEASE, Release);
M_CB(MPIID_OMXMLSERVICEENUM, ifc_omxmlserviceenum, QUERYINTERFACE, QueryInterface);
M_CB(MPIID_OMXMLSERVICEENUM, ifc_omxmlserviceenum, API_GETSTATUSCODE, GetStatusCode);
M_CB(MPIID_OMXMLSERVICEENUM, ifc_omxmlserviceenum, API_GETSTATUSTEXT, GetStatusText);
END_PATCH
END_MULTIPATCH;
#undef CBCLASS
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