Tools/TestWebKitAPI/Tests/WebKit/DownloadDecideDestinationCrash.cpp

/*
 * Copyright (C) 2011 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
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 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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#include "config.h"

#if WK_HAVE_C_SPI

#include "PlatformUtilities.h"
#include "PlatformWebView.h"
#include <WebKit/WKDownload.h>

namespace TestWebKitAPI {

static bool didDecideDestination;

static void decidePolicyForNavigationAction(WKPageRef, WKNavigationActionRef, WKFramePolicyListenerRef listener, WKTypeRef, const void*)
{
    WKFramePolicyListenerDownload(listener);
}

static WKStringRef decideDestinationWithSuggestedFilename(WKContextRef, WKDownloadRef download, WKStringRef, bool*, const void*)
{
    didDecideDestination = true;
    WKDownloadCancel(download);
    return Util::toWK("/tmp/WebKitAPITest/DownloadDecideDestinationCrash").leakRef();
}

static void setContextDownloadClient(WKContextRef context)
{
    WKContextDownloadClientV0 client;
    memset(&client, 0, sizeof(client));

    client.base.version = 0;
    client.decideDestinationWithSuggestedFilename = decideDestinationWithSuggestedFilename;

    WKContextSetDownloadClient(context, &client.base);
}

static void setPagePolicyClient(WKPageRef page)
{
    WKPageNavigationClientV0 navigationClient;
    memset(&navigationClient, 0, sizeof(navigationClient));

    navigationClient.base.version = 0;
    navigationClient.decidePolicyForNavigationAction = decidePolicyForNavigationAction;

    WKPageSetPageNavigationClient(page, &navigationClient.base);
}

TEST(WebKit, DownloadDecideDestinationCrash)
{
    WKRetainPtr<WKContextRef> context = adoptWK(WKContextCreateWithConfiguration(nullptr));
    setContextDownloadClient(context.get());

    PlatformWebView webView(context.get());
    setPagePolicyClient(webView.page());

    // The length of this filename was specially chosen to trigger the crash conditions in
    // <http://webkit.org/b/61142>. Specifically, it causes ArgumentDecoder::m_bufferPos and m_bufferEnd
    // to be equal after the DecideDestinationWithSuggestedFilename message has been handled.
    WKPageLoadURL(webView.page(), adoptWK(Util::createURLForResource("18-characters", "html")).get());

    Util::run(&didDecideDestination);
}

} // namespace TestWebKitAPI

#endif