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      1 /*
      2  * Copyright (C) 2010 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
     14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
     17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     23  * THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "ProcessLauncher.h"
     28 
     29 #include "Connection.h"
     30 #include "RunLoop.h"
     31 #include <shlwapi.h>
     32 #include <wtf/text/WTFString.h>
     33 
     34 #ifdef DEBUG_ALL
     35 const LPCWSTR webProcessName = L"WebKit2WebProcess_debug.exe";
     36 #else
     37 const LPCWSTR webProcessName = L"WebKit2WebProcess.exe";
     38 #endif
     39 
     40 #ifdef DEBUG_ALL
     41 const LPCWSTR webKitDLLName = L"WebKit_debug.dll";
     42 #else
     43 const LPCWSTR webKitDLLName = L"WebKit.dll";
     44 #endif
     45 
     46 namespace WebKit {
     47 
     48 void ProcessLauncher::launchProcess()
     49 {
     50     // First, create the server and client identifiers.
     51     HANDLE serverIdentifier, clientIdentifier;
     52     if (!CoreIPC::Connection::createServerAndClientIdentifiers(serverIdentifier, clientIdentifier)) {
     53         // FIXME: What should we do here?
     54         ASSERT_NOT_REACHED();
     55     }
     56 
     57     // Ensure that the child process inherits the client identifier.
     58     ::SetHandleInformation(clientIdentifier, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT);
     59 
     60     // To get the full file path to WebKit2WebProcess.exe, we fild the location of WebKit.dll,
     61     // remove the last path component, and then append WebKit2WebProcess(_debug).exe.
     62     HMODULE webKitModule = ::GetModuleHandleW(webKitDLLName);
     63     ASSERT(webKitModule);
     64     if (!webKitModule)
     65         return;
     66 
     67     WCHAR pathStr[MAX_PATH];
     68     if (!::GetModuleFileNameW(webKitModule, pathStr, WTF_ARRAY_LENGTH(pathStr)))
     69         return;
     70 
     71     ::PathRemoveFileSpecW(pathStr);
     72     if (!::PathAppendW(pathStr, webProcessName))
     73         return;
     74 
     75     String commandLine(pathStr);
     76 
     77     // FIXME: It would be nice if we could just create a CommandLine object and output a command line vector from it.
     78     Vector<UChar> commandLineVector;
     79     append(commandLineVector, "\"");
     80     append(commandLineVector, commandLine);
     81     append(commandLineVector, "\"");
     82     append(commandLineVector, " -type webprocess");
     83     append(commandLineVector, " -clientIdentifier ");
     84     append(commandLineVector, String::number(reinterpret_cast<uintptr_t>(clientIdentifier)));
     85     commandLineVector.append('\0');
     86 
     87     STARTUPINFO startupInfo = { 0 };
     88     startupInfo.cb = sizeof(startupInfo);
     89     PROCESS_INFORMATION processInformation = { 0 };
     90     BOOL result = ::CreateProcessW(0, commandLineVector.data(), 0, 0, true, 0, 0, 0, &startupInfo, &processInformation);
     91 
     92     // We can now close the client identifier handle.
     93     ::CloseHandle(clientIdentifier);
     94 
     95     if (!result) {
     96         // FIXME: What should we do here?
     97         DWORD error = ::GetLastError();
     98         ASSERT_NOT_REACHED();
     99     }
    100 
    101     // Don't leak the thread handle.
    102     ::CloseHandle(processInformation.hThread);
    103 
    104     // We've finished launching the process, message back to the run loop.
    105     RunLoop::main()->scheduleWork(WorkItem::create(this, &ProcessLauncher::didFinishLaunchingProcess, processInformation.hProcess, serverIdentifier));
    106 }
    107 
    108 void ProcessLauncher::terminateProcess()
    109 {
    110     if (!m_processIdentifier)
    111         return;
    112 
    113     ::TerminateProcess(m_processIdentifier, 0);
    114 }
    115 
    116 void ProcessLauncher::platformInvalidate()
    117 {
    118     if (!m_processIdentifier)
    119         return;
    120 
    121     ::CloseHandle(m_processIdentifier);
    122     m_processIdentifier = 0;
    123 }
    124 
    125 } // namespace WebKit
    126