428 lines
10 KiB
C++
428 lines
10 KiB
C++
/*
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__ __ _
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___\ \/ /_ __ __ _| |_
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/ _ \\ /| '_ \ / _` | __|
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| __// \| |_) | (_| | |_
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\___/_/\_\ .__/ \__,_|\__|
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|_| XML parser
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Copyright (c) 1997-2000 Thai Open Source Software Center Ltd
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Copyright (c) 2000-2017 Expat development team
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Licensed under the MIT license:
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to permit
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persons to whom the Software is furnished to do so, subject to the
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following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "expat.h"
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#ifdef XML_UNICODE
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#define UNICODE
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#endif
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#include <windows.h>
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#include <urlmon.h>
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#include <wininet.h>
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#include <stdio.h>
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#include <tchar.h>
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#include "xmlurl.h"
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#include "xmlmime.h"
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static int
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processURL(XML_Parser parser, IMoniker *baseMoniker, const XML_Char *url);
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typedef void (*StopHandler)(void *, HRESULT);
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class Callback : public IBindStatusCallback {
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public:
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// IUnknown methods
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STDMETHODIMP QueryInterface(REFIID,void **);
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STDMETHODIMP_(ULONG) AddRef();
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STDMETHODIMP_(ULONG) Release();
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// IBindStatusCallback methods
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STDMETHODIMP OnStartBinding(DWORD, IBinding *);
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STDMETHODIMP GetPriority(LONG *);
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STDMETHODIMP OnLowResource(DWORD);
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STDMETHODIMP OnProgress(ULONG, ULONG, ULONG, LPCWSTR);
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STDMETHODIMP OnStopBinding(HRESULT, LPCWSTR);
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STDMETHODIMP GetBindInfo(DWORD *, BINDINFO *);
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STDMETHODIMP OnDataAvailable(DWORD, DWORD, FORMATETC *, STGMEDIUM *);
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STDMETHODIMP OnObjectAvailable(REFIID, IUnknown *);
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Callback(XML_Parser, IMoniker *, StopHandler, void *);
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~Callback();
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int externalEntityRef(const XML_Char *context,
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const XML_Char *systemId, const XML_Char *publicId);
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private:
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XML_Parser parser_;
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IMoniker *baseMoniker_;
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DWORD totalRead_;
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ULONG ref_;
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IBinding *pBinding_;
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StopHandler stopHandler_;
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void *stopArg_;
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};
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STDMETHODIMP_(ULONG)
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Callback::AddRef()
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{
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return ref_++;
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}
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STDMETHODIMP_(ULONG)
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Callback::Release()
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{
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if (--ref_ == 0) {
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delete this;
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return 0;
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}
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return ref_;
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}
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STDMETHODIMP
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Callback::QueryInterface(REFIID riid, void** ppv)
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{
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if (IsEqualGUID(riid, IID_IUnknown))
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*ppv = (IUnknown *)this;
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else if (IsEqualGUID(riid, IID_IBindStatusCallback))
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*ppv = (IBindStatusCallback *)this;
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else
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return E_NOINTERFACE;
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((LPUNKNOWN)*ppv)->AddRef();
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return S_OK;
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}
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STDMETHODIMP
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Callback::OnStartBinding(DWORD, IBinding* pBinding)
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{
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pBinding_ = pBinding;
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pBinding->AddRef();
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return S_OK;
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}
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STDMETHODIMP
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Callback::GetPriority(LONG *)
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{
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return E_NOTIMPL;
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}
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STDMETHODIMP
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Callback::OnLowResource(DWORD)
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{
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return E_NOTIMPL;
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}
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STDMETHODIMP
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Callback::OnProgress(ULONG, ULONG, ULONG, LPCWSTR)
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{
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return S_OK;
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}
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STDMETHODIMP
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Callback::OnStopBinding(HRESULT hr, LPCWSTR szError)
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{
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if (pBinding_) {
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pBinding_->Release();
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pBinding_ = 0;
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}
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if (baseMoniker_) {
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baseMoniker_->Release();
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baseMoniker_ = 0;
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}
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stopHandler_(stopArg_, hr);
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return S_OK;
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}
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STDMETHODIMP
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Callback::GetBindInfo(DWORD* pgrfBINDF, BINDINFO* pbindinfo)
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{
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*pgrfBINDF = BINDF_ASYNCHRONOUS;
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return S_OK;
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}
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static void
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reportError(XML_Parser parser)
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{
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int code = XML_GetErrorCode(parser);
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const XML_Char *message = XML_ErrorString(code);
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if (message)
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_ftprintf(stderr, _T("%s:%d:%ld: %s\n"),
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XML_GetBase(parser),
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XML_GetErrorLineNumber(parser),
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XML_GetErrorColumnNumber(parser),
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message);
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else
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_ftprintf(stderr, _T("%s: (unknown message %d)\n"),
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XML_GetBase(parser), code);
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}
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STDMETHODIMP
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Callback::OnDataAvailable(DWORD grfBSCF,
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DWORD dwSize,
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FORMATETC *pfmtetc,
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STGMEDIUM* pstgmed)
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{
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if (grfBSCF & BSCF_FIRSTDATANOTIFICATION) {
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IWinInetHttpInfo *hp;
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HRESULT hr = pBinding_->QueryInterface(IID_IWinInetHttpInfo,
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(void **)&hp);
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if (SUCCEEDED(hr)) {
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char contentType[1024];
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DWORD bufSize = sizeof(contentType);
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DWORD flags = 0;
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contentType[0] = 0;
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hr = hp->QueryInfo(HTTP_QUERY_CONTENT_TYPE, contentType,
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&bufSize, 0, NULL);
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if (SUCCEEDED(hr)) {
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char charset[CHARSET_MAX];
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getXMLCharset(contentType, charset);
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if (charset[0]) {
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#ifdef XML_UNICODE
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XML_Char wcharset[CHARSET_MAX];
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XML_Char *p1 = wcharset;
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const char *p2 = charset;
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while ((*p1++ = (unsigned char)*p2++) != 0)
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;
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XML_SetEncoding(parser_, wcharset);
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#else
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XML_SetEncoding(parser_, charset);
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#endif
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}
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}
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hp->Release();
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}
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}
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if (!parser_)
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return E_ABORT;
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if (pstgmed->tymed == TYMED_ISTREAM) {
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while (totalRead_ < dwSize) {
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#define READ_MAX (64*1024)
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DWORD nToRead = dwSize - totalRead_;
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if (nToRead > READ_MAX)
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nToRead = READ_MAX;
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void *buf = XML_GetBuffer(parser_, nToRead);
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if (!buf) {
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_ftprintf(stderr, _T("out of memory\n"));
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return E_ABORT;
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}
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DWORD nRead;
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HRESULT hr = pstgmed->pstm->Read(buf, nToRead, &nRead);
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if (SUCCEEDED(hr)) {
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totalRead_ += nRead;
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if (!XML_ParseBuffer(parser_,
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nRead,
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(grfBSCF & BSCF_LASTDATANOTIFICATION) != 0
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&& totalRead_ == dwSize)) {
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reportError(parser_);
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return E_ABORT;
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}
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}
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}
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}
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return S_OK;
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}
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STDMETHODIMP
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Callback::OnObjectAvailable(REFIID, IUnknown *)
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{
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return S_OK;
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}
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int
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Callback::externalEntityRef(const XML_Char *context,
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const XML_Char *systemId,
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const XML_Char *publicId)
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{
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XML_Parser entParser = XML_ExternalEntityParserCreate(parser_, context, 0);
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XML_SetBase(entParser, systemId);
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int ret = processURL(entParser, baseMoniker_, systemId);
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XML_ParserFree(entParser);
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return ret;
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}
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Callback::Callback(XML_Parser parser, IMoniker *baseMoniker,
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StopHandler stopHandler, void *stopArg)
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: parser_(parser),
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baseMoniker_(baseMoniker),
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ref_(0),
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pBinding_(0),
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totalRead_(0),
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stopHandler_(stopHandler),
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stopArg_(stopArg)
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{
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if (baseMoniker_)
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baseMoniker_->AddRef();
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}
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Callback::~Callback()
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{
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if (pBinding_)
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pBinding_->Release();
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if (baseMoniker_)
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baseMoniker_->Release();
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}
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static int
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externalEntityRef(void *arg,
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const XML_Char *context,
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const XML_Char *base,
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const XML_Char *systemId,
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const XML_Char *publicId)
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{
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return ((Callback *)arg)->externalEntityRef(context, systemId, publicId);
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}
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static HRESULT
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openStream(XML_Parser parser,
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IMoniker *baseMoniker,
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const XML_Char *uri,
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StopHandler stopHandler, void *stopArg)
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{
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if (!XML_SetBase(parser, uri))
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return E_OUTOFMEMORY;
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HRESULT hr;
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IMoniker *m;
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#ifdef XML_UNICODE
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hr = CreateURLMoniker(0, uri, &m);
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#else
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LPWSTR uriw = new wchar_t[strlen(uri) + 1];
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for (int i = 0;; i++) {
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uriw[i] = uri[i];
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if (uriw[i] == 0)
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break;
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}
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hr = CreateURLMoniker(baseMoniker, uriw, &m);
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delete [] uriw;
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#endif
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if (FAILED(hr))
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return hr;
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IBindStatusCallback *cb = new Callback(parser, m, stopHandler, stopArg);
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XML_SetExternalEntityRefHandler(parser, externalEntityRef);
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XML_SetExternalEntityRefHandlerArg(parser, cb);
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cb->AddRef();
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IBindCtx *b;
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if (FAILED(hr = CreateAsyncBindCtx(0, cb, 0, &b))) {
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cb->Release();
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m->Release();
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return hr;
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}
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cb->Release();
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IStream *pStream;
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hr = m->BindToStorage(b, 0, IID_IStream, (void **)&pStream);
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if (SUCCEEDED(hr)) {
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if (pStream)
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pStream->Release();
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}
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if (hr == MK_S_ASYNCHRONOUS)
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hr = S_OK;
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m->Release();
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b->Release();
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return hr;
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}
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struct QuitInfo {
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const XML_Char *url;
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HRESULT hr;
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int stop;
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};
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static void
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winPerror(const XML_Char *url, HRESULT hr)
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{
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LPVOID buf;
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if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER
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| FORMAT_MESSAGE_FROM_HMODULE,
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GetModuleHandleA("urlmon.dll"),
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hr,
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPTSTR) &buf,
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0,
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NULL)
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|| FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER
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| FORMAT_MESSAGE_FROM_SYSTEM,
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0,
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hr,
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPTSTR) &buf,
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0,
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NULL)) {
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/* The system error messages seem to end with a newline. */
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_ftprintf(stderr, _T("%s: %s"), url, buf);
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fflush(stderr);
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LocalFree(buf);
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}
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else
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_ftprintf(stderr, _T("%s: error %x\n"), url, hr);
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}
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static void
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threadQuit(void *p, HRESULT hr)
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{
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QuitInfo *qi = (QuitInfo *)p;
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qi->hr = hr;
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qi->stop = 1;
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}
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extern "C"
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int
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XML_URLInit(void)
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{
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return SUCCEEDED(CoInitialize(0));
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}
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extern "C"
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void
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XML_URLUninit(void)
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{
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CoUninitialize();
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}
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static int
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processURL(XML_Parser parser, IMoniker *baseMoniker,
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const XML_Char *url)
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{
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QuitInfo qi;
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qi.stop = 0;
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qi.url = url;
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XML_SetBase(parser, url);
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HRESULT hr = openStream(parser, baseMoniker, url, threadQuit, &qi);
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if (FAILED(hr)) {
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winPerror(url, hr);
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return 0;
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}
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else if (FAILED(qi.hr)) {
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winPerror(url, qi.hr);
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return 0;
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}
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MSG msg;
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while (!qi.stop && GetMessage (&msg, NULL, 0, 0)) {
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TranslateMessage (&msg);
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DispatchMessage (&msg);
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}
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return 1;
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}
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extern "C"
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int
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XML_ProcessURL(XML_Parser parser,
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const XML_Char *url,
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unsigned flags)
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{
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return processURL(parser, 0, url);
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}
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