Bug 55501 – [Qt][WK2] Loading an empty URL crashes

• Component: WebKit2
• Status: RESOLVED FIXED

[Benjamin Poulain]

WKPageLoadURL is not supposed to get null WKURLRef. This dereferences a null pointer:

void WKPageLoadURL(WKPageRef pageRef, WKURLRef URLRef)
{
    toImpl(pageRef)->loadURL(toImpl(URLRef)->string());
}

[Benjamin Poulain]

Created attachment 84290 [details]
Patch

[WebKit Review Bot]

Attachment 84290 [details] did not pass style-queue:

Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/WebKit2/ChangeLog', u'Source/WebKit..." exit_code: 1

Source/WebKit2/UIProcess/API/qt/tests/qwkpage/tst_qwkpage.cpp:20:  Found other header before WebCore config.h. Should be: config.h, primary header, blank line, and then alphabetically sorted.  [build/include_order] [4]
Total errors found: 1 in 6 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Benjamin Poulain]

Created attachment 85817 [details]
Patch

As Andreas pointed out on IRC, null WKURLRef are actually a valid value in the WebKit 2 C APIs.

I changed the patch to take that into account. It happens that there is a method toWTFString() to do all the work for me :)

[WebKit Review Bot]

Attachment 85817 [details] did not pass style-queue:

Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/WebKit2/ChangeLog', u'Source/WebKit..." exit_code: 1

Source/WebKit2/UIProcess/API/qt/tests/qwkpage/tst_qwkpage.cpp:20:  Found other header before WebCore config.h. Should be: config.h, primary header, blank line, and then alphabetically sorted.  [build/include_order] [4]
Total errors found: 1 in 6 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Andreas Kling]

Comment on attachment 85817 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=85817&action=review

> Source/WebKit2/UIProcess/API/qt/tests/qgraphicswkview/tst_qgraphicswkview.cpp:99
> +    // That should not crash.
> +    m_view->show();
> +    m_view->m_webView->load(QUrl());
> +    QTest::qWait(50);
> +
> +    m_view->m_webView->load(QUrl(""));
> +    QTest::qWait(50);

Let's use the QWKPage::engineConnectionChanged() signal to find out if the web process crashed.
This test would never fail, since the autotest process cruises along happily.

[Benjamin Poulain]

Created attachment 85921 [details]
Patch

> Let's use the QWKPage::engineConnectionChanged() signal to find out if the web process crashed.
> This test would never fail, since the autotest process cruises along happily.

Good point, I did not realize crashing the WebProcess would not have side effects on the test. Patch updated.

[WebKit Review Bot]

Attachment 85921 [details] did not pass style-queue:

Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/WebKit2/ChangeLog', u'Source/WebKit..." exit_code: 1

Source/WebKit2/UIProcess/API/qt/tests/qwkpage/tst_qwkpage.cpp:20:  Found other header before WebCore config.h. Should be: config.h, primary header, blank line, and then alphabetically sorted.  [build/include_order] [4]
Total errors found: 1 in 6 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[WebKit Commit Bot]

Comment on attachment 85921 [details]
Patch

Clearing flags on attachment: 85921

Committed r81237: <http://trac.webkit.org/changeset/81237>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.