/*
 * Copyright (C) 2010 Apple Inc. All rights reserved.
 * Portions Copyright (c) 2010 Motorola Mobility, Inc.  All rights reserved.
 *
 * 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
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY MOTOROLA INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MOTOROLA INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "ProcessExecutablePath.h"

#include <WebCore/FileSystem.h>
#include <glib.h>
#include <wtf/gobject/GlibUtilities.h>

using namespace WebCore;

namespace WebKit {

const char* gWebKitWebProcessName = "WebKitWebProcess";
const char* gWebKitPluginProcessName = "WebKitPluginProcess";

static String findWebKitProcess(const char* processName)
{
    const char* execDirectory = g_getenv("WEBKIT_EXEC_PATH");
    if (execDirectory) {
        String processPath = pathByAppendingComponent(filenameToString(execDirectory), processName);
        if (fileExists(processPath))
            return processPath;
    }

    static bool gotExecutablePath = false;
    static String executablePath;
    if (!gotExecutablePath) {
        gotExecutablePath = true;

        CString executableFile = getCurrentExecutablePath();
        if (!executableFile.isNull())
            executablePath = directoryName(filenameToString(executableFile.data()));
    }

    if (!executablePath.isNull()) {
        String processPath = pathByAppendingComponent(executablePath, processName);
        if (fileExists(processPath))
            return processPath;
    }

    return pathByAppendingComponent(filenameToString(LIBEXECDIR), processName);
}

String executablePathOfWebProcess()
{
    return findWebKitProcess(gWebKitWebProcessName);
}

String executablePathOfPluginProcess()
{
    return findWebKitProcess(gWebKitPluginProcessName);
}

} // namespace WebKit