RockPaperScissors/node_modules/node-expat/deps/libexpat/xmlwf/xmlwin32url.cxx
2021-12-02 17:22:41 +01:00

395 lines
8.6 KiB
C++

#include "expat.h"
#ifdef XML_UNICODE
#define UNICODE
#endif
#include <windows.h>
#include <urlmon.h>
#include <wininet.h>
#include <stdio.h>
#include <tchar.h>
#include "xmlurl.h"
#include "xmlmime.h"
static int
processURL(XML_Parser parser, IMoniker *baseMoniker, const XML_Char *url);
typedef void (*StopHandler)(void *, HRESULT);
class Callback : public IBindStatusCallback {
public:
// IUnknown methods
STDMETHODIMP QueryInterface(REFIID,void **);
STDMETHODIMP_(ULONG) AddRef();
STDMETHODIMP_(ULONG) Release();
// IBindStatusCallback methods
STDMETHODIMP OnStartBinding(DWORD, IBinding *);
STDMETHODIMP GetPriority(LONG *);
STDMETHODIMP OnLowResource(DWORD);
STDMETHODIMP OnProgress(ULONG, ULONG, ULONG, LPCWSTR);
STDMETHODIMP OnStopBinding(HRESULT, LPCWSTR);
STDMETHODIMP GetBindInfo(DWORD *, BINDINFO *);
STDMETHODIMP OnDataAvailable(DWORD, DWORD, FORMATETC *, STGMEDIUM *);
STDMETHODIMP OnObjectAvailable(REFIID, IUnknown *);
Callback(XML_Parser, IMoniker *, StopHandler, void *);
~Callback();
int externalEntityRef(const XML_Char *context,
const XML_Char *systemId, const XML_Char *publicId);
private:
XML_Parser parser_;
IMoniker *baseMoniker_;
DWORD totalRead_;
ULONG ref_;
IBinding *pBinding_;
StopHandler stopHandler_;
void *stopArg_;
};
STDMETHODIMP_(ULONG)
Callback::AddRef()
{
return ref_++;
}
STDMETHODIMP_(ULONG)
Callback::Release()
{
if (--ref_ == 0) {
delete this;
return 0;
}
return ref_;
}
STDMETHODIMP
Callback::QueryInterface(REFIID riid, void** ppv)
{
if (IsEqualGUID(riid, IID_IUnknown))
*ppv = (IUnknown *)this;
else if (IsEqualGUID(riid, IID_IBindStatusCallback))
*ppv = (IBindStatusCallback *)this;
else
return E_NOINTERFACE;
((LPUNKNOWN)*ppv)->AddRef();
return S_OK;
}
STDMETHODIMP
Callback::OnStartBinding(DWORD, IBinding* pBinding)
{
pBinding_ = pBinding;
pBinding->AddRef();
return S_OK;
}
STDMETHODIMP
Callback::GetPriority(LONG *)
{
return E_NOTIMPL;
}
STDMETHODIMP
Callback::OnLowResource(DWORD)
{
return E_NOTIMPL;
}
STDMETHODIMP
Callback::OnProgress(ULONG, ULONG, ULONG, LPCWSTR)
{
return S_OK;
}
STDMETHODIMP
Callback::OnStopBinding(HRESULT hr, LPCWSTR szError)
{
if (pBinding_) {
pBinding_->Release();
pBinding_ = 0;
}
if (baseMoniker_) {
baseMoniker_->Release();
baseMoniker_ = 0;
}
stopHandler_(stopArg_, hr);
return S_OK;
}
STDMETHODIMP
Callback::GetBindInfo(DWORD* pgrfBINDF, BINDINFO* pbindinfo)
{
*pgrfBINDF = BINDF_ASYNCHRONOUS;
return S_OK;
}
static void
reportError(XML_Parser parser)
{
int code = XML_GetErrorCode(parser);
const XML_Char *message = XML_ErrorString(code);
if (message)
_ftprintf(stderr, _T("%s:%d:%ld: %s\n"),
XML_GetBase(parser),
XML_GetErrorLineNumber(parser),
XML_GetErrorColumnNumber(parser),
message);
else
_ftprintf(stderr, _T("%s: (unknown message %d)\n"),
XML_GetBase(parser), code);
}
STDMETHODIMP
Callback::OnDataAvailable(DWORD grfBSCF,
DWORD dwSize,
FORMATETC *pfmtetc,
STGMEDIUM* pstgmed)
{
if (grfBSCF & BSCF_FIRSTDATANOTIFICATION) {
IWinInetHttpInfo *hp;
HRESULT hr = pBinding_->QueryInterface(IID_IWinInetHttpInfo,
(void **)&hp);
if (SUCCEEDED(hr)) {
char contentType[1024];
DWORD bufSize = sizeof(contentType);
DWORD flags = 0;
contentType[0] = 0;
hr = hp->QueryInfo(HTTP_QUERY_CONTENT_TYPE, contentType,
&bufSize, 0, NULL);
if (SUCCEEDED(hr)) {
char charset[CHARSET_MAX];
getXMLCharset(contentType, charset);
if (charset[0]) {
#ifdef XML_UNICODE
XML_Char wcharset[CHARSET_MAX];
XML_Char *p1 = wcharset;
const char *p2 = charset;
while ((*p1++ = (unsigned char)*p2++) != 0)
;
XML_SetEncoding(parser_, wcharset);
#else
XML_SetEncoding(parser_, charset);
#endif
}
}
hp->Release();
}
}
if (!parser_)
return E_ABORT;
if (pstgmed->tymed == TYMED_ISTREAM) {
while (totalRead_ < dwSize) {
#define READ_MAX (64*1024)
DWORD nToRead = dwSize - totalRead_;
if (nToRead > READ_MAX)
nToRead = READ_MAX;
void *buf = XML_GetBuffer(parser_, nToRead);
if (!buf) {
_ftprintf(stderr, _T("out of memory\n"));
return E_ABORT;
}
DWORD nRead;
HRESULT hr = pstgmed->pstm->Read(buf, nToRead, &nRead);
if (SUCCEEDED(hr)) {
totalRead_ += nRead;
if (!XML_ParseBuffer(parser_,
nRead,
(grfBSCF & BSCF_LASTDATANOTIFICATION) != 0
&& totalRead_ == dwSize)) {
reportError(parser_);
return E_ABORT;
}
}
}
}
return S_OK;
}
STDMETHODIMP
Callback::OnObjectAvailable(REFIID, IUnknown *)
{
return S_OK;
}
int
Callback::externalEntityRef(const XML_Char *context,
const XML_Char *systemId,
const XML_Char *publicId)
{
XML_Parser entParser = XML_ExternalEntityParserCreate(parser_, context, 0);
XML_SetBase(entParser, systemId);
int ret = processURL(entParser, baseMoniker_, systemId);
XML_ParserFree(entParser);
return ret;
}
Callback::Callback(XML_Parser parser, IMoniker *baseMoniker,
StopHandler stopHandler, void *stopArg)
: parser_(parser),
baseMoniker_(baseMoniker),
ref_(0),
pBinding_(0),
totalRead_(0),
stopHandler_(stopHandler),
stopArg_(stopArg)
{
if (baseMoniker_)
baseMoniker_->AddRef();
}
Callback::~Callback()
{
if (pBinding_)
pBinding_->Release();
if (baseMoniker_)
baseMoniker_->Release();
}
static int
externalEntityRef(void *arg,
const XML_Char *context,
const XML_Char *base,
const XML_Char *systemId,
const XML_Char *publicId)
{
return ((Callback *)arg)->externalEntityRef(context, systemId, publicId);
}
static HRESULT
openStream(XML_Parser parser,
IMoniker *baseMoniker,
const XML_Char *uri,
StopHandler stopHandler, void *stopArg)
{
if (!XML_SetBase(parser, uri))
return E_OUTOFMEMORY;
HRESULT hr;
IMoniker *m;
#ifdef XML_UNICODE
hr = CreateURLMoniker(0, uri, &m);
#else
LPWSTR uriw = new wchar_t[strlen(uri) + 1];
for (int i = 0;; i++) {
uriw[i] = uri[i];
if (uriw[i] == 0)
break;
}
hr = CreateURLMoniker(baseMoniker, uriw, &m);
delete [] uriw;
#endif
if (FAILED(hr))
return hr;
IBindStatusCallback *cb = new Callback(parser, m, stopHandler, stopArg);
XML_SetExternalEntityRefHandler(parser, externalEntityRef);
XML_SetExternalEntityRefHandlerArg(parser, cb);
cb->AddRef();
IBindCtx *b;
if (FAILED(hr = CreateAsyncBindCtx(0, cb, 0, &b))) {
cb->Release();
m->Release();
return hr;
}
cb->Release();
IStream *pStream;
hr = m->BindToStorage(b, 0, IID_IStream, (void **)&pStream);
if (SUCCEEDED(hr)) {
if (pStream)
pStream->Release();
}
if (hr == MK_S_ASYNCHRONOUS)
hr = S_OK;
m->Release();
b->Release();
return hr;
}
struct QuitInfo {
const XML_Char *url;
HRESULT hr;
int stop;
};
static void
winPerror(const XML_Char *url, HRESULT hr)
{
LPVOID buf;
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER
| FORMAT_MESSAGE_FROM_HMODULE,
GetModuleHandleA("urlmon.dll"),
hr,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &buf,
0,
NULL)
|| FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER
| FORMAT_MESSAGE_FROM_SYSTEM,
0,
hr,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &buf,
0,
NULL)) {
/* The system error messages seem to end with a newline. */
_ftprintf(stderr, _T("%s: %s"), url, buf);
fflush(stderr);
LocalFree(buf);
}
else
_ftprintf(stderr, _T("%s: error %x\n"), url, hr);
}
static void
threadQuit(void *p, HRESULT hr)
{
QuitInfo *qi = (QuitInfo *)p;
qi->hr = hr;
qi->stop = 1;
}
extern "C"
int
XML_URLInit(void)
{
return SUCCEEDED(CoInitialize(0));
}
extern "C"
void
XML_URLUninit(void)
{
CoUninitialize();
}
static int
processURL(XML_Parser parser, IMoniker *baseMoniker,
const XML_Char *url)
{
QuitInfo qi;
qi.stop = 0;
qi.url = url;
XML_SetBase(parser, url);
HRESULT hr = openStream(parser, baseMoniker, url, threadQuit, &qi);
if (FAILED(hr)) {
winPerror(url, hr);
return 0;
}
else if (FAILED(qi.hr)) {
winPerror(url, qi.hr);
return 0;
}
MSG msg;
while (!qi.stop && GetMessage (&msg, NULL, 0, 0)) {
TranslateMessage (&msg);
DispatchMessage (&msg);
}
return 1;
}
extern "C"
int
XML_ProcessURL(XML_Parser parser,
const XML_Char *url,
unsigned flags)
{
return processURL(parser, 0, url);
}