browser(webkit): fix null pointer access (#1099)

This commit is contained in:
Pavel Feldman 2020-02-25 06:54:10 -08:00 committed by GitHub
parent ba29470cc1
commit 8c57358248
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2 changed files with 20 additions and 10 deletions

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@ -1 +1 @@
1154
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@ -12092,7 +12092,7 @@ index d996feb64e02d7399f2ed0b34d3d0dd03133f824..4ab1fa69437ed5a11a5357a331cb7e1c
CommandLineOptions()
#if ENABLE(WEBKIT)
diff --git a/Tools/MiniBrowser/win/MainWindow.cpp b/Tools/MiniBrowser/win/MainWindow.cpp
index 08131e61107bc4163c4fb1e9a65ee5a1ecda6b04..57d3b3662c4f31dba750a340b628744d505f1161 100644
index 08131e61107bc4163c4fb1e9a65ee5a1ecda6b04..bfe54fa7c027b75c470ad2da4c5f83f2250cbb7e 100644
--- a/Tools/MiniBrowser/win/MainWindow.cpp
+++ b/Tools/MiniBrowser/win/MainWindow.cpp
@@ -102,7 +102,10 @@ bool MainWindow::isInstance(HWND hwnd)
@ -12179,7 +12179,17 @@ index 08131e61107bc4163c4fb1e9a65ee5a1ecda6b04..57d3b3662c4f31dba750a340b628744d
if (m_browserWindow->usesLayeredWebView() || !m_browserWindow->hwnd())
return;
@@ -309,17 +321,15 @@ LRESULT CALLBACK MainWindow::WndProc(HWND hWnd, UINT message, WPARAM wParam, LPA
@@ -254,6 +266,9 @@ LRESULT CALLBACK MainWindow::WndProc(HWND hWnd, UINT message, WPARAM wParam, LPA
{
LRESULT result = 0;
RefPtr<MainWindow> thisWindow = reinterpret_cast<MainWindow*>(GetWindowLongPtr(hWnd, GWLP_USERDATA));
+ if (!thisWindow && message != WM_CREATE)
+ return DefWindowProc(hWnd, message, wParam, lParam);
+
switch (message) {
case WM_ACTIVATE:
switch (LOWORD(wParam)) {
@@ -309,17 +324,15 @@ LRESULT CALLBACK MainWindow::WndProc(HWND hWnd, UINT message, WPARAM wParam, LPA
break;
#if ENABLE(WEBKIT)
case IDM_NEW_WEBKIT_WINDOW: {
@ -12199,7 +12209,7 @@ index 08131e61107bc4163c4fb1e9a65ee5a1ecda6b04..57d3b3662c4f31dba750a340b628744d
break;
}
#endif
@@ -443,6 +453,9 @@ void MainWindow::setDefaultURLToCurrentURL()
@@ -443,6 +456,9 @@ void MainWindow::setDefaultURLToCurrentURL()
bool MainWindow::toggleMenuItem(UINT menuID)
{
@ -12209,7 +12219,7 @@ index 08131e61107bc4163c4fb1e9a65ee5a1ecda6b04..57d3b3662c4f31dba750a340b628744d
HMENU menu = ::GetMenu(hwnd());
switch (menuID) {
@@ -519,6 +532,8 @@ INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
@@ -519,6 +535,8 @@ INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
INT_PTR CALLBACK MainWindow::cachesDialogProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
MainWindow& thisWindow = *reinterpret_cast<MainWindow*>(GetWindowLongPtr(hDlg, DWLP_USER));
@ -12218,7 +12228,7 @@ index 08131e61107bc4163c4fb1e9a65ee5a1ecda6b04..57d3b3662c4f31dba750a340b628744d
switch (message) {
case WM_INITDIALOG:
SetWindowLongPtr(hDlg, DWLP_USER, lParam);
@@ -549,6 +564,8 @@ INT_PTR CALLBACK MainWindow::cachesDialogProc(HWND hDlg, UINT message, WPARAM wP
@@ -549,6 +567,8 @@ INT_PTR CALLBACK MainWindow::cachesDialogProc(HWND hDlg, UINT message, WPARAM wP
INT_PTR CALLBACK MainWindow::customUserAgentDialogProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
MainWindow& thisWindow = *reinterpret_cast<MainWindow*>(GetWindowLongPtr(hDlg, DWLP_USER));
@ -12227,7 +12237,7 @@ index 08131e61107bc4163c4fb1e9a65ee5a1ecda6b04..57d3b3662c4f31dba750a340b628744d
switch (message) {
case WM_INITDIALOG: {
MainWindow& thisWindow = *reinterpret_cast<MainWindow*>(lParam);
@@ -594,27 +611,26 @@ void MainWindow::loadURL(std::wstring url)
@@ -594,27 +614,26 @@ void MainWindow::loadURL(std::wstring url)
if (SUCCEEDED(::UrlCreateFromPath(url.c_str(), fileURL, &fileURLLength, 0)))
url = fileURL;
}
@ -12261,7 +12271,7 @@ index 08131e61107bc4163c4fb1e9a65ee5a1ecda6b04..57d3b3662c4f31dba750a340b628744d
wchar_t url[INTERNET_MAX_URL_LENGTH];
GetWindowText(m_hURLBarWnd, url, INTERNET_MAX_URL_LENGTH);
loadURL(url);
@@ -622,6 +638,8 @@ void MainWindow::onURLBarEnter()
@@ -622,6 +641,8 @@ void MainWindow::onURLBarEnter()
void MainWindow::updateDeviceScaleFactor()
{
@ -12270,7 +12280,7 @@ index 08131e61107bc4163c4fb1e9a65ee5a1ecda6b04..57d3b3662c4f31dba750a340b628744d
if (m_hURLBarFont)
::DeleteObject(m_hURLBarFont);
@@ -638,6 +656,8 @@ void MainWindow::updateDeviceScaleFactor()
@@ -638,6 +659,8 @@ void MainWindow::updateDeviceScaleFactor()
void MainWindow::progressChanged(double progress)
{
@ -12279,7 +12289,7 @@ index 08131e61107bc4163c4fb1e9a65ee5a1ecda6b04..57d3b3662c4f31dba750a340b628744d
std::wostringstream text;
text << static_cast<int>(progress * 100) << L'%';
SetWindowText(m_hProgressIndicator, text.str().c_str());
@@ -645,10 +665,14 @@ void MainWindow::progressChanged(double progress)
@@ -645,10 +668,14 @@ void MainWindow::progressChanged(double progress)
void MainWindow::progressFinished()
{