webnetscapepluginpackage.mm

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

            if (!NP_Initialize || !NP_GetEntryPoints || !NP_Shutdown)
                return NO;
#ifdef SUPPORT_CFM
        }
    } else {
        // single CFM file
        FSSpec spec;
        FSRef fref;
        OSErr err;
        
        err = FSPathMakeRef((UInt8 *)[path fileSystemRepresentation], &fref, NULL);
        if (err != noErr) {
            LOG_ERROR("FSPathMakeRef failed. Error=%d", err);
            return NO;
        }
        err = FSGetCatalogInfo(&fref, kFSCatInfoNone, NULL, NULL, &spec, NULL);
        if (err != noErr) {
            LOG_ERROR("FSGetCatalogInfo failed. Error=%d", err);
            return NO;
        }
        err = WebGetDiskFragment(&spec, 0, kCFragGoesToEOF, nil, kPrivateCFragCopy, &connID, (Ptr *)&pluginMainFunc, nil);
        if (err != noErr) {
            LOG_ERROR("WebGetDiskFragment failed. Error=%d", err);
            return NO;
        }
#if !LOG_DISABLED
        currentTime = CFAbsoluteTimeGetCurrent();
        duration = currentTime - start;
#endif
        LOG(Plugins, "%f WebGetDiskFragment took %f seconds", currentTime, duration);
        isLoaded = YES;
        
        pluginMainFunc = (MainFuncPtr)functionPointerForTVector((TransitionVector)pluginMainFunc);
        if (!pluginMainFunc) {
            return NO;
        }

        // NOTE: pluginMainFunc is freed after it is called. Be sure not to return before that.
        
        isCFM = YES;
    }
#endif /* SUPPORT_CFM */
    
    // Plugins (at least QT) require that you call UseResFile on the resource file before loading it.
    resourceRef = [self openResourceFile];
    if (resourceRef != -1) {
        UseResFile(resourceRef);
    }
    
    // swap function tables
#ifdef SUPPORT_CFM
    if (isCFM) {
        browserFuncs.version = NP_VERSION_MINOR;
        browserFuncs.size = sizeof(NPNetscapeFuncs);
        browserFuncs.geturl = (NPN_GetURLProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_GetURL);
        browserFuncs.posturl = (NPN_PostURLProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_PostURL);
        browserFuncs.requestread = (NPN_RequestReadProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_RequestRead);
        browserFuncs.newstream = (NPN_NewStreamProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_NewStream);
        browserFuncs.write = (NPN_WriteProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_Write);
        browserFuncs.destroystream = (NPN_DestroyStreamProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_DestroyStream);
        browserFuncs.status = (NPN_StatusProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_Status);
        browserFuncs.uagent = (NPN_UserAgentProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_UserAgent);
        browserFuncs.memalloc = (NPN_MemAllocProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_MemAlloc);
        browserFuncs.memfree = (NPN_MemFreeProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_MemFree);
        browserFuncs.memflush = (NPN_MemFlushProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_MemFlush);
        browserFuncs.reloadplugins = (NPN_ReloadPluginsProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_ReloadPlugins);
        browserFuncs.geturlnotify = (NPN_GetURLNotifyProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_GetURLNotify);
        browserFuncs.posturlnotify = (NPN_PostURLNotifyProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_PostURLNotify);
        browserFuncs.getvalue = (NPN_GetValueProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_GetValue);
        browserFuncs.setvalue = (NPN_SetValueProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_SetValue);
        browserFuncs.invalidaterect = (NPN_InvalidateRectProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_InvalidateRect);
        browserFuncs.invalidateregion = (NPN_InvalidateRegionProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_InvalidateRegion);
        browserFuncs.forceredraw = (NPN_ForceRedrawProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_ForceRedraw);
        browserFuncs.getJavaEnv = (NPN_GetJavaEnvProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_GetJavaEnv);
        browserFuncs.getJavaPeer = (NPN_GetJavaPeerProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_GetJavaPeer);
        browserFuncs.pushpopupsenabledstate = (NPN_PushPopupsEnabledStateProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_PushPopupsEnabledState);
        browserFuncs.poppopupsenabledstate = (NPN_PopPopupsEnabledStateProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_PopPopupsEnabledState);
        browserFuncs.pluginthreadasynccall = (NPN_PluginThreadAsyncCallProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_PluginThreadAsyncCall);
        browserFuncs.scheduletimer = (NPN_ScheduleTimerProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_ScheduleTimer);
        browserFuncs.unscheduletimer = (NPN_UnscheduleTimerProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_UnscheduleTimer);
        browserFuncs.popupcontextmenu = (NPN_PopUpContextMenuProcPtr)tVectorForFunctionPointer((FunctionPointer)NPN_PopUpContextMenu);
        
        browserFuncs.releasevariantvalue = (NPN_ReleaseVariantValueProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_ReleaseVariantValue);
        browserFuncs.getstringidentifier = (NPN_GetStringIdentifierProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_GetStringIdentifier);
        browserFuncs.getstringidentifiers = (NPN_GetStringIdentifiersProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_GetStringIdentifiers);
        browserFuncs.getintidentifier = (NPN_GetIntIdentifierProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_GetIntIdentifier);
        browserFuncs.identifierisstring = (NPN_IdentifierIsStringProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_IdentifierIsString);
        browserFuncs.utf8fromidentifier = (NPN_UTF8FromIdentifierProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_UTF8FromIdentifier);
        browserFuncs.intfromidentifier = (NPN_IntFromIdentifierProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_IntFromIdentifier);
        browserFuncs.createobject = (NPN_CreateObjectProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_CreateObject);
        browserFuncs.retainobject = (NPN_RetainObjectProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_RetainObject);
        browserFuncs.releaseobject = (NPN_ReleaseObjectProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_ReleaseObject);
        browserFuncs.hasmethod = (NPN_HasMethodProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_HasProperty);
        browserFuncs.invoke = (NPN_InvokeProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_Invoke);
        browserFuncs.invokeDefault = (NPN_InvokeDefaultProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_InvokeDefault);
        browserFuncs.evaluate = (NPN_EvaluateProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_Evaluate);
        browserFuncs.hasproperty = (NPN_HasPropertyProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_HasProperty);
        browserFuncs.getproperty = (NPN_GetPropertyProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_GetProperty);
        browserFuncs.setproperty = (NPN_SetPropertyProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_SetProperty);
        browserFuncs.removeproperty = (NPN_RemovePropertyProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_RemoveProperty);
        browserFuncs.setexception = (NPN_SetExceptionProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_SetException);
        browserFuncs.enumerate = (NPN_EnumerateProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_Enumerate);
        browserFuncs.construct = (NPN_ConstructProcPtr)tVectorForFunctionPointer((FunctionPointer)_NPN_Construct);
        
        [self _applyDjVuWorkaround];
        
#if !LOG_DISABLED
        CFAbsoluteTime mainStart = CFAbsoluteTimeGetCurrent();
#endif
        LOG(Plugins, "%f main timing started", mainStart);
        NPP_ShutdownProcPtr shutdownFunction;
        npErr = pluginMainFunc(&browserFuncs, &pluginFuncs, &shutdownFunction);
        NP_Shutdown = (NPP_ShutdownProcPtr)functionPointerForTVector((TransitionVector)shutdownFunction);
        if (!isBundle)
            // Don't free pluginMainFunc if we got it from a bundle because it is owned by CFBundle in that case.
            free(reinterpret_cast<void*>(pluginMainFunc));
        
        // Workaround for 3270576. The RealPlayer plug-in fails to load if its preference file is out of date.
        // Launch the RealPlayer application to refresh the file.
        if (npErr != NPERR_NO_ERROR) {
            if (npErr == NPERR_MODULE_LOAD_FAILED_ERROR && [[self filename] isEqualToString:RealPlayerPluginFilename])
                [self launchRealPlayer];
            return NO;
        }
#if !LOG_DISABLED
        currentTime = CFAbsoluteTimeGetCurrent();
        duration = currentTime - mainStart;
#endif
        LOG(Plugins, "%f main took %f seconds", currentTime, duration);
        
        pluginSize = pluginFuncs.size;
        pluginVersion = pluginFuncs.version;
        LOG(Plugins, "pluginMainFunc: %d, size=%d, version=%d", npErr, pluginSize, pluginVersion);
        
        pluginFuncs.newp = (NPP_NewProcPtr)functionPointerForTVector((TransitionVector)pluginFuncs.newp);
        pluginFuncs.destroy = (NPP_DestroyProcPtr)functionPointerForTVector((TransitionVector)pluginFuncs.destroy);
        pluginFuncs.setwindow = (NPP_SetWindowProcPtr)functionPointerForTVector((TransitionVector)pluginFuncs.setwindow);
        pluginFuncs.newstream = (NPP_NewStreamProcPtr)functionPointerForTVector((TransitionVector)pluginFuncs.newstream);
        pluginFuncs.destroystream = (NPP_DestroyStreamProcPtr)functionPointerForTVector((TransitionVector)pluginFuncs.destroystream);
        pluginFuncs.asfile = (NPP_StreamAsFileProcPtr)functionPointerForTVector((TransitionVector)pluginFuncs.asfile);
        pluginFuncs.writeready = (NPP_WriteReadyProcPtr)functionPointerForTVector((TransitionVector)pluginFuncs.writeready);
        pluginFuncs.write = (NPP_WriteProcPtr)functionPointerForTVector((TransitionVector)pluginFuncs.write);
        pluginFuncs.print = (NPP_PrintProcPtr)functionPointerForTVector((TransitionVector)pluginFuncs.print);
        pluginFuncs.event = (NPP_HandleEventProcPtr)functionPointerForTVector((TransitionVector)pluginFuncs.event);
        pluginFuncs.urlnotify = (NPP_URLNotifyProcPtr)functionPointerForTVector((TransitionVector)pluginFuncs.urlnotify);
        pluginFuncs.getvalue = (NPP_GetValueProcPtr)functionPointerForTVector((TransitionVector)pluginFuncs.getvalue);
        pluginFuncs.setvalue = (NPP_SetValueProcPtr)functionPointerForTVector((TransitionVector)pluginFuncs.setvalue);

        // LiveConnect support
        pluginFuncs.javaClass = (JRIGlobalRef)functionPointerForTVector((TransitionVector)pluginFuncs.javaClass);
        if (pluginFuncs.javaClass) {
            LOG(LiveConnect, "%@:  CFM entry point for NPP_GetJavaClass = %p", [self name], pluginFuncs.javaClass);
        } else {
            LOG(LiveConnect, "%@:  no entry point for NPP_GetJavaClass", [self name]);
        }

    } else {

#endif

        // no function pointer conversion necessary for Mach-O
        browserFuncs.version = NP_VERSION_MINOR;
        browserFuncs.size = sizeof(NPNetscapeFuncs);
        browserFuncs.geturl = NPN_GetURL;
        browserFuncs.posturl = NPN_PostURL;
        browserFuncs.requestread = NPN_RequestRead;
        browserFuncs.newstream = NPN_NewStream;
        browserFuncs.write = NPN_Write;
        browserFuncs.destroystream = NPN_DestroyStream;
        browserFuncs.status = NPN_Status;
        browserFuncs.uagent = NPN_UserAgent;
        browserFuncs.memalloc = NPN_MemAlloc;
        browserFuncs.memfree = NPN_MemFree;
        browserFuncs.memflush = NPN_MemFlush;
        browserFuncs.reloadplugins = NPN_ReloadPlugins;
        browserFuncs.geturlnotify = NPN_GetURLNotify;
        browserFuncs.posturlnotify = NPN_PostURLNotify;
        browserFuncs.getvalue = NPN_GetValue;
        browserFuncs.setvalue = NPN_SetValue;
        browserFuncs.invalidaterect = NPN_InvalidateRect;
        browserFuncs.invalidateregion = NPN_InvalidateRegion;
        browserFuncs.forceredraw = NPN_ForceRedraw;
        browserFuncs.getJavaEnv = NPN_GetJavaEnv;
        browserFuncs.getJavaPeer = NPN_GetJavaPeer;
        browserFuncs.pushpopupsenabledstate = NPN_PushPopupsEnabledState;
        browserFuncs.poppopupsenabledstate = NPN_PopPopupsEnabledState;
        browserFuncs.pluginthreadasynccall = NPN_PluginThreadAsyncCall;
        browserFuncs.scheduletimer = NPN_ScheduleTimer;
        browserFuncs.unscheduletimer = NPN_UnscheduleTimer;
        browserFuncs.popupcontextmenu = NPN_PopUpContextMenu;
        
        browserFuncs.releasevariantvalue = _NPN_ReleaseVariantValue;
        browserFuncs.getstringidentifier = _NPN_GetStringIdentifier;
        browserFuncs.getstringidentifiers = _NPN_GetStringIdentifiers;
        browserFuncs.getintidentifier = _NPN_GetIntIdentifier;
        browserFuncs.identifierisstring = _NPN_IdentifierIsString;
        browserFuncs.utf8fromidentifier = _NPN_UTF8FromIdentifier;
        browserFuncs.intfromidentifier = _NPN_IntFromIdentifier;
        browserFuncs.createobject = _NPN_CreateObject;
        browserFuncs.retainobject = _NPN_RetainObject;
        browserFuncs.releaseobject = _NPN_ReleaseObject;
        browserFuncs.hasmethod = _NPN_HasMethod;
        browserFuncs.invoke = _NPN_Invoke;
        browserFuncs.invokeDefault = _NPN_InvokeDefault;
        browserFuncs.evaluate = _NPN_Evaluate;
        browserFuncs.hasproperty = _NPN_HasProperty;
        browserFuncs.getproperty = _NPN_GetProperty;
        browserFuncs.setproperty = _NPN_SetProperty;
        browserFuncs.removeproperty = _NPN_RemoveProperty;
        browserFuncs.setexception = _NPN_SetException;
        browserFuncs.enumerate = _NPN_Enumerate;
        browserFuncs.construct = _NPN_Construct;
        
        [self _applyDjVuWorkaround];

#if !LOG_DISABLED
        CFAbsoluteTime initializeStart = CFAbsoluteTimeGetCurrent();
#endif
        LOG(Plugins, "%f NP_Initialize timing started", initializeStart);
        npErr = NP_Initialize(&browserFuncs);
        if (npErr != NPERR_NO_ERROR)
            return NO;
#if !LOG_DISABLED
        currentTime = CFAbsoluteTimeGetCurrent();
        duration = currentTime - initializeStart;
#endif
        LOG(Plugins, "%f NP_Initialize took %f seconds", currentTime, duration);

        pluginFuncs.size = sizeof(NPPluginFuncs);
        
        npErr = NP_GetEntryPoints(&pluginFuncs);
        if (npErr != NPERR_NO_ERROR)
            return NO;
        
        pluginSize = pluginFuncs.size;
        pluginVersion = pluginFuncs.version;
        
        if (pluginFuncs.javaClass)
            LOG(LiveConnect, "%@:  mach-o entry point for NPP_GetJavaClass = %p", [self name], pluginFuncs.javaClass);
        else
            LOG(LiveConnect, "%@:  no entry point for NPP_GetJavaClass", [self name]);

#ifdef SUPPORT_CFM
    }
#endif

#if !LOG_DISABLED
    currentTime = CFAbsoluteTimeGetCurrent();
    duration = currentTime - start;
#endif
    LOG(Plugins, "%f Total load time: %f seconds", currentTime, duration);

    return YES;
}

- (BOOL)load
{    
    if ([self _tryLoad])
        return [super load];

    [self _unloadWithShutdown:NO];
    return NO;
}

- (NPPluginFuncs *)pluginFuncs
{
    return &pluginFuncs;
}

- (void)wasRemovedFromPluginDatabase:(WebPluginDatabase *)database
{
    [super wasRemovedFromPluginDatabase:database];
    
    // Unload when removed from final plug-in database
    if ([pluginDatabases count] == 0)
        [self _unloadWithShutdown:YES];
}

- (void)open
{
    instanceCount++;
    
    // Handle the case where all instances close a plug-in package, but another
    // instance opens the package before it is unloaded (which only happens when
    // the plug-in database is refreshed)
    needsUnload = NO;
    
    if (!isLoaded) {
        // Should load when the first instance opens the plug-in package
        ASSERT(instanceCount == 1);
        [self load];
    }
}

- (void)close
{
    ASSERT(instanceCount > 0);
    instanceCount--;
    if (instanceCount == 0 && needsUnload)
        [self _unloadWithShutdown:YES];
}

@end

#ifdef SUPPORT_CFM

// function pointer converters

FunctionPointer functionPointerForTVector(TransitionVector tvp)
{
    const uint32 temp[6] = {0x3D800000, 0x618C0000, 0x800C0000, 0x804C0004, 0x7C0903A6, 0x4E800420};
    uint32 *newGlue = NULL;

    if (tvp != NULL) {
        newGlue = (uint32 *)malloc(sizeof(temp));
        if (newGlue != NULL) {
            unsigned i;
            for (i = 0; i < 6; i++) newGlue[i] = temp[i];
            newGlue[0] |= ((uintptr_t)tvp >> 16);
            newGlue[1] |= ((uintptr_t)tvp & 0xFFFF);
            MakeDataExecutable(newGlue, sizeof(temp));
        }
    }
    
    return (FunctionPointer)newGlue;
}

TransitionVector tVectorForFunctionPointer(FunctionPointer fp)
{
    FunctionPointer *newGlue = NULL;
    if (fp != NULL) {
        newGlue = (FunctionPointer *)malloc(2 * sizeof(FunctionPointer));
        if (newGlue != NULL) {
            newGlue[0] = fp;
            newGlue[1] = NULL;
        }
    }
    return (TransitionVector)newGlue;
}

#endif

@implementation WebNetscapePluginPackage (Internal)

- (void)_unloadWithShutdown:(BOOL)shutdown
{
    if (!isLoaded)
        return;
    
    LOG(Plugins, "Unloading %@...", name);

    // Cannot unload a plug-in package while an instance is still using it
    if (instanceCount > 0) {
        needsUnload = YES;
        return;
    }

    if (shutdown && NP_Shutdown)
        NP_Shutdown();

    if (resourceRef != -1)
        [self closeResourceFile:resourceRef];

#ifdef SUPPORT_CFM
    if (isBundle)
#endif
        CFBundleUnloadExecutable(cfBundle);
#ifdef SUPPORT_CFM
    else
        WebCloseConnection(&connID);
#endif

    LOG(Plugins, "Plugin Unloaded");
    isLoaded = NO;
}

@end
#endif