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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ceee/ie/plugin/bho/http_negotiate.h"
#include <atlbase.h>
#include <atlctl.h>
#include <htiframe.h>
#include <urlmon.h>
#include "base/logging.h"
#include "base/scoped_ptr.h"
#include "base/string_util.h"
#include "base/time.h"
#include "ceee/ie/plugin/bho/cookie_accountant.h"
#include "chrome_frame/vtable_patch_manager.h"
#include "chrome_frame/utils.h"
#include "base/scoped_comptr_win.h"
static const int kHttpNegotiateBeginningTransactionIndex = 3;
static const int kHttpNegotiateOnResponseIndex = 4;
CComAutoCriticalSection HttpNegotiatePatch::bho_instance_count_crit_;
int HttpNegotiatePatch::bho_instance_count_ = 0;
BEGIN_VTABLE_PATCHES(IHttpNegotiate)
VTABLE_PATCH_ENTRY(kHttpNegotiateBeginningTransactionIndex,
HttpNegotiatePatch::BeginningTransaction)
VTABLE_PATCH_ENTRY(kHttpNegotiateOnResponseIndex,
HttpNegotiatePatch::OnResponse)
END_VTABLE_PATCHES()
namespace {
class SimpleBindStatusCallback : public CComObjectRootEx<CComSingleThreadModel>,
public IBindStatusCallback {
public:
BEGIN_COM_MAP(SimpleBindStatusCallback)
COM_INTERFACE_ENTRY(IBindStatusCallback)
END_COM_MAP()
// IBindStatusCallback implementation
STDMETHOD(OnStartBinding)(DWORD reserved, IBinding* binding) {
return E_NOTIMPL;
}
STDMETHOD(GetPriority)(LONG* priority) {
return E_NOTIMPL;
}
STDMETHOD(OnLowResource)(DWORD reserved) {
return E_NOTIMPL;
}
STDMETHOD(OnProgress)(ULONG progress, ULONG max_progress,
ULONG status_code, LPCWSTR status_text) {
return E_NOTIMPL;
}
STDMETHOD(OnStopBinding)(HRESULT result, LPCWSTR error) {
return E_NOTIMPL;
}
STDMETHOD(GetBindInfo)(DWORD* bind_flags, BINDINFO* bind_info) {
return E_NOTIMPL;
}
STDMETHOD(OnDataAvailable)(DWORD flags, DWORD size, FORMATETC* formatetc,
STGMEDIUM* storage) {
return E_NOTIMPL;
}
STDMETHOD(OnObjectAvailable)(REFIID iid, IUnknown* object) {
return E_NOTIMPL;
}
};
} // end namespace
HttpNegotiatePatch::HttpNegotiatePatch() {
}
HttpNegotiatePatch::~HttpNegotiatePatch() {
}
// static
bool HttpNegotiatePatch::Initialize() {
// Patch IHttpNegotiate for user-agent and cookie functionality.
{
CComCritSecLock<CComAutoCriticalSection> lock(bho_instance_count_crit_);
bho_instance_count_++;
if (bho_instance_count_ != 1) {
return true;
}
}
if (IS_PATCHED(IHttpNegotiate)) {
LOG(WARNING) << __FUNCTION__ << ": already patched.";
return true;
}
// Use our SimpleBindStatusCallback class as we need a temporary object that
// implements IBindStatusCallback.
CComObjectStackEx<SimpleBindStatusCallback> request;
ScopedComPtr<IBindCtx> bind_ctx;
HRESULT hr = ::CreateAsyncBindCtx(0, &request, NULL, bind_ctx.Receive());
DCHECK(SUCCEEDED(hr)) << "CreateAsyncBindCtx";
if (bind_ctx) {
ScopedComPtr<IUnknown> bscb_holder;
bind_ctx->GetObjectParam(L"_BSCB_Holder_", bscb_holder.Receive());
if (bscb_holder) {
hr = PatchHttpNegotiate(bscb_holder);
} else {
NOTREACHED() << "Failed to get _BSCB_Holder_";
hr = E_UNEXPECTED;
}
bind_ctx.Release();
}
return SUCCEEDED(hr);
}
// static
void HttpNegotiatePatch::Uninitialize() {
CComCritSecLock<CComAutoCriticalSection> lock(bho_instance_count_crit_);
bho_instance_count_--;
DCHECK_GE(bho_instance_count_, 0);
if (bho_instance_count_ == 0) {
vtable_patch::UnpatchInterfaceMethods(IHttpNegotiate_PatchInfo);
}
}
// static
HRESULT HttpNegotiatePatch::PatchHttpNegotiate(IUnknown* to_patch) {
DCHECK(to_patch);
DCHECK_IS_NOT_PATCHED(IHttpNegotiate);
ScopedComPtr<IHttpNegotiate> http;
HRESULT hr = http.QueryFrom(to_patch);
if (FAILED(hr)) {
hr = DoQueryService(IID_IHttpNegotiate, to_patch, http.Receive());
}
if (http) {
hr = vtable_patch::PatchInterfaceMethods(http, IHttpNegotiate_PatchInfo);
DLOG_IF(ERROR, FAILED(hr))
<< StringPrintf("HttpNegotiate patch failed 0x%08X", hr);
} else {
DLOG(WARNING)
<< StringPrintf("IHttpNegotiate not supported 0x%08X", hr);
}
return hr;
}
// static
HRESULT HttpNegotiatePatch::BeginningTransaction(
IHttpNegotiate_BeginningTransaction_Fn original, IHttpNegotiate* me,
LPCWSTR url, LPCWSTR headers, DWORD reserved, LPWSTR* additional_headers) {
DLOG(INFO) << __FUNCTION__ << " " << url << " headers:\n" << headers;
HRESULT hr = original(me, url, headers, reserved, additional_headers);
if (FAILED(hr)) {
DLOG(WARNING) << __FUNCTION__ << " Delegate returned an error";
return hr;
}
// TODO(skare@google.com): Modify User-Agent here.
return hr;
}
// static
HRESULT HttpNegotiatePatch::OnResponse(
IHttpNegotiate_OnResponse_Fn original, IHttpNegotiate* me,
DWORD response_code, LPCWSTR response_headers, LPCWSTR request_headers,
LPWSTR* additional_request_headers) {
DLOG(INFO) << __FUNCTION__ << " response headers:\n" << response_headers;
base::Time current_time = base::Time::Now();
HRESULT hr = original(me, response_code, response_headers, request_headers,
additional_request_headers);
if (FAILED(hr)) {
DLOG(WARNING) << __FUNCTION__ << " Delegate returned an error";
return hr;
}
CookieAccountant::GetInstance()->RecordHttpResponseCookies(
std::string(CW2A(response_headers)), current_time);
return hr;
}
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