/* ***** BEGIN LICENSE BLOCK *****
 * 
 * Copyright (c) 2008, Mozilla Corporation
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * * Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * * 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.
 * * Neither the name of the Mozilla Corporation nor the names of its
 *   contributors may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT OWNER OR 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.
 * 
 * Contributor(s):
 *   Dave Townsend <dtownsend@oxymoronical.com>
 *   Josh Aas <josh@mozilla.com>
 * 
 * ***** END LICENSE BLOCK ***** */

#include "nptest.h"
#include "nptest_utils.h"
#include "nptest_platform.h"

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <iostream>
#include <string>
#include <sstream>

 using namespace std;

#define PLUGIN_NAME        "Test Plug-in"
#define PLUGIN_DESCRIPTION "Plug-in for testing purposes."
#define PLUGIN_VERSION     "1.0.0.0"

#define ARRAY_LENGTH(a) (sizeof(a)/sizeof(a[0]))

//
// static data
//

static NPNetscapeFuncs* sBrowserFuncs = NULL;
static NPClass sNPClass;

//
// identifiers
//

typedef bool (* ScriptableFunction)
  (NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);

static bool npnEvaluateTest(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool npnInvokeTest(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool npnInvokeDefaultTest(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool setUndefinedValueTest(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool identifierToStringTest(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool timerTest(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool queryPrivateModeState(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool lastReportedPrivateModeState(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool hasWidget(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool getEdge(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool getClipRegionRectCount(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool getClipRegionRectEdge(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool startWatchingInstanceCount(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool getInstanceCount(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool stopWatchingInstanceCount(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool unscheduleAllTimers(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool getLastMouseX(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool getLastMouseY(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool getPaintCount(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool getError(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool doInternalConsistencyCheck(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool setColor(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool throwExceptionNextInvoke(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool convertPointX(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
static bool convertPointY(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);

static const NPUTF8* sPluginMethodIdentifierNames[] = {
  "npnEvaluateTest",
  "npnInvokeTest",
  "npnInvokeDefaultTest",
  "setUndefinedValueTest",
  "identifierToStringTest",
  "timerTest",
  "queryPrivateModeState",
  "lastReportedPrivateModeState",
  "hasWidget",
  "getEdge",
  "getClipRegionRectCount",
  "getClipRegionRectEdge",
  "startWatchingInstanceCount",
  "getInstanceCount",
  "stopWatchingInstanceCount",
  "unscheduleAllTimers",
  "getLastMouseX",
  "getLastMouseY",
  "getPaintCount",
  "getError",
  "doInternalConsistencyCheck",
  "setColor",
  "throwExceptionNextInvoke",
  "convertPointX",
  "convertPointY",
};
static NPIdentifier sPluginMethodIdentifiers[ARRAY_LENGTH(sPluginMethodIdentifierNames)];
static const ScriptableFunction sPluginMethodFunctions[ARRAY_LENGTH(sPluginMethodIdentifierNames)] = {
  npnEvaluateTest,
  npnInvokeTest,
  npnInvokeDefaultTest,
  setUndefinedValueTest,
  identifierToStringTest,
  timerTest,
  queryPrivateModeState,
  lastReportedPrivateModeState,
  hasWidget,
  getEdge,
  getClipRegionRectCount,
  getClipRegionRectEdge,
  startWatchingInstanceCount,
  getInstanceCount,
  stopWatchingInstanceCount,
  unscheduleAllTimers,
  getLastMouseX,
  getLastMouseY,
  getPaintCount,
  getError,
  doInternalConsistencyCheck,
  setColor,
  throwExceptionNextInvoke,
  convertPointX,
  convertPointY,
};

static const char* NPN_GetURLNotifyCookie = "NPN_GetURLNotify_Cookie";

static const char* SUCCESS_STRING = "pass";

static bool sIdentifiersInitialized = false;

/**
 * Incremented for every startWatchingInstanceCount.
 */
static int32_t sCurrentInstanceCountWatchGeneration = 0;
/**
 * Tracks the number of instances created or destroyed since the last
 * startWatchingInstanceCount.
 */
static int32_t sInstanceCount = 0;
/**
 * True when we've had a startWatchingInstanceCount with no corresponding
 * stopWatchingInstanceCount.
 */
static bool sWatchingInstanceCount = false;

static void initializeIdentifiers()
{
  if (!sIdentifiersInitialized) {
    NPN_GetStringIdentifiers(sPluginMethodIdentifierNames,
        ARRAY_LENGTH(sPluginMethodIdentifierNames), sPluginMethodIdentifiers);
    sIdentifiersInitialized = true;    
  }
}

static void clearIdentifiers()
{
  memset(sPluginMethodIdentifiers, 0,
      ARRAY_LENGTH(sPluginMethodIdentifiers) * sizeof(NPIdentifier));
  sIdentifiersInitialized = false;
}

static void addRange(InstanceData* instanceData, const char* range)
{
  char rangestr[16];
  strncpy(rangestr, range, sizeof(rangestr));
  const char* str1 = strtok(rangestr, ",");
  const char* str2 = str1 ? strtok(NULL, ",") : NULL;
  if (str1 && str2) {
    TestRange* byterange = new TestRange;
    byterange->offset = atoi(str1);
    byterange->length = atoi(str2);
    byterange->waiting = true;
    byterange->next = instanceData->testrange;
    instanceData->testrange = byterange;
  }
}

static void sendBufferToFrame(NPP instance)
{
  InstanceData* instanceData = (InstanceData*)(instance->pdata);
  string outbuf;
  if (!instanceData->npnNewStream) outbuf = "data:text/html,";
  const char* buf = reinterpret_cast<char *>(instanceData->streamBuf);
  int32_t bufsize = instanceData->streamBufSize;
  if (instanceData->streamMode == NP_ASFILE || 
      instanceData->streamMode == NP_ASFILEONLY) {
    buf = reinterpret_cast<char *>(instanceData->fileBuf);
    bufsize = instanceData->fileBufSize;
  }
  if (instanceData->err.str().length() > 0) {
    outbuf.append(instanceData->err.str());
  }
  else if (bufsize > 0) {
    outbuf.append(buf);
  }
  else {
    outbuf.append("Error: no data in buffer");
  }
  
  if (instanceData->npnNewStream &&
      instanceData->err.str().length() == 0) {
    char typeHTML[] = "text/html";
    NPStream* stream;
    printf("calling NPN_NewStream...");
    NPError err = NPN_NewStream(instance, typeHTML, 
        instanceData->frame.c_str(), &stream);
    printf("return value %d\n", err);
    if (err != NPERR_NO_ERROR) {
      instanceData->err << "NPN_NewStream returned " << err;
      return;
    }
    
    int32_t bytesToWrite = outbuf.length();
    int32_t bytesWritten = 0;
    while ((bytesToWrite - bytesWritten) > 0) {
      int32_t numBytes = (bytesToWrite - bytesWritten) < 
          instanceData->streamChunkSize ?
          bytesToWrite - bytesWritten : instanceData->streamChunkSize;
      int32_t written = NPN_Write(instance, stream,
          numBytes, (void*)(outbuf.c_str() + bytesWritten));
      if (written <= 0) {
        instanceData->err << "NPN_Write returned " << written;
        break;
      }
      bytesWritten += numBytes;
      printf("%d bytes written, total %d\n", written, bytesWritten);
    }
    err = NPN_DestroyStream(instance, stream, NPRES_DONE);
    if (err != NPERR_NO_ERROR) {
      instanceData->err << "NPN_DestroyStream returned " << err;
    }
  }
  else {
    // Convert CRLF to LF, and escape most other non-alphanumeric chars.
    for (size_t i = 0; i < outbuf.length(); i++) {
      if (outbuf[i] == '\n') {
        outbuf.replace(i, 1, "%0a");
        i += 2;
      }
      else if (outbuf[i] == '\r') {
        outbuf.replace(i, 1, "");
        i -= 1;
      }
      else {
        int ascii = outbuf[i];
        if (!((ascii >= ',' && ascii <= ';') ||
              (ascii >= 'A' && ascii <= 'Z') ||
              (ascii >= 'a' && ascii <= 'z'))) {
          char hex[8];
          sprintf(hex, "%%%x", ascii);
          outbuf.replace(i, 1, hex);
          i += 2;
        }
      }
    }

    NPError err = NPN_GetURL(instance, outbuf.c_str(), 
                             instanceData->frame.c_str());
    if (err != NPERR_NO_ERROR) {
      instanceData->err << "NPN_GetURL returned " << err;
    }
  }
}

TestFunction
getFuncFromString(const char* funcname)
{
  FunctionTable funcTable[] = 
    {
      { FUNCTION_NPP_NEWSTREAM, "npp_newstream" },
      { FUNCTION_NPP_WRITEREADY, "npp_writeready" },
      { FUNCTION_NPP_WRITE, "npp_write" },
      { FUNCTION_NPP_DESTROYSTREAM, "npp_destroystream" },
      { FUNCTION_NONE, NULL }
    };
  int32_t i = 0;
  while(funcTable[i].funcName) {
    if (!strcmp(funcname, funcTable[i].funcName)) return funcTable[i].funcId;
    i++;
  }
  return FUNCTION_NONE;
}

//
// function signatures
//

NPObject* scriptableAllocate(NPP npp, NPClass* aClass);
void scriptableDeallocate(NPObject* npobj);
void scriptableInvalidate(NPObject* npobj);
bool scriptableHasMethod(NPObject* npobj, NPIdentifier name);
bool scriptableInvoke(NPObject* npobj, NPIdentifier name, const NPVariant* args, uint32_t argCount, NPVariant* result);
bool scriptableInvokeDefault(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);
bool scriptableHasProperty(NPObject* npobj, NPIdentifier name);
bool scriptableGetProperty(NPObject* npobj, NPIdentifier name, NPVariant* result);
bool scriptableSetProperty(NPObject* npobj, NPIdentifier name, const NPVariant* value);
bool scriptableRemoveProperty(NPObject* npobj, NPIdentifier name);
bool scriptableEnumerate(NPObject* npobj, NPIdentifier** identifier, uint32_t* count);
bool scriptableConstruct(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result);

//
// npapi plugin functions
//

#ifdef XP_UNIX
NP_EXPORT(char*)
NP_GetPluginVersion()
{
  return PLUGIN_VERSION;
}
#endif

#if defined(XP_UNIX)
NP_EXPORT(char*) NP_GetMIMEDescription()
#elif defined(XP_WIN) || defined(XP_OS2)
char* NP_GetMIMEDescription()
#endif
{
  return "application/x-test:tst:Test mimetype";
}

#ifdef XP_UNIX
NP_EXPORT(NPError)
NP_GetValue(void* future, NPPVariable aVariable, void* aValue) {
  switch (aVariable) {
    case NPPVpluginNameString:
      *((char**)aValue) = PLUGIN_NAME;
      break;
    case NPPVpluginDescriptionString:
      *((char**)aValue) = PLUGIN_DESCRIPTION;
      break;
    default:
      return NPERR_INVALID_PARAM;
      break;
  }
  return NPERR_NO_ERROR;
}
#endif

static void fillPluginFunctionTable(NPPluginFuncs* pFuncs)
{
  pFuncs->version = 11;
  pFuncs->size = sizeof(*pFuncs);
  pFuncs->newp = NPP_New;
  pFuncs->destroy = NPP_Destroy;
  pFuncs->setwindow = NPP_SetWindow;
  pFuncs->newstream = NPP_NewStream;
  pFuncs->destroystream = NPP_DestroyStream;
  pFuncs->asfile = NPP_StreamAsFile;
  pFuncs->writeready = NPP_WriteReady;
  pFuncs->write = NPP_Write;
  pFuncs->print = NPP_Print;
  pFuncs->event = NPP_HandleEvent;
  pFuncs->urlnotify = NPP_URLNotify;
  pFuncs->getvalue = NPP_GetValue;
  pFuncs->setvalue = NPP_SetValue;
}

#if defined(XP_MACOSX)
NP_EXPORT(NPError) NP_Initialize(NPNetscapeFuncs* bFuncs)
#elif defined(XP_WIN) || defined(XP_OS2)
NPError OSCALL NP_Initialize(NPNetscapeFuncs* bFuncs)
#elif defined(XP_UNIX)
NP_EXPORT(NPError) NP_Initialize(NPNetscapeFuncs* bFuncs, NPPluginFuncs* pFuncs)
#endif
{
  sBrowserFuncs = bFuncs;

  initializeIdentifiers();

  memset(&sNPClass, 0, sizeof(NPClass));
  sNPClass.structVersion =  NP_CLASS_STRUCT_VERSION;
  sNPClass.allocate =       (NPAllocateFunctionPtr)scriptableAllocate;
  sNPClass.deallocate =     (NPDeallocateFunctionPtr)scriptableDeallocate;
  sNPClass.invalidate =     (NPInvalidateFunctionPtr)scriptableInvalidate;
  sNPClass.hasMethod =      (NPHasMethodFunctionPtr)scriptableHasMethod;
  sNPClass.invoke =         (NPInvokeFunctionPtr)scriptableInvoke;
  sNPClass.invokeDefault =  (NPInvokeDefaultFunctionPtr)scriptableInvokeDefault;
  sNPClass.hasProperty =    (NPHasPropertyFunctionPtr)scriptableHasProperty;
  sNPClass.getProperty =    (NPGetPropertyFunctionPtr)scriptableGetProperty;
  sNPClass.setProperty =    (NPSetPropertyFunctionPtr)scriptableSetProperty;
  sNPClass.removeProperty = (NPRemovePropertyFunctionPtr)scriptableRemoveProperty;
  sNPClass.enumerate =      (NPEnumerationFunctionPtr)scriptableEnumerate;
  sNPClass.construct =      (NPConstructFunctionPtr)scriptableConstruct;

#if defined(XP_UNIX) && !defined(XP_MACOSX)
  fillPluginFunctionTable(pFuncs);
#endif

  return NPERR_NO_ERROR;
}

#if defined(XP_MACOSX)
NP_EXPORT(NPError) NP_GetEntryPoints(NPPluginFuncs* pFuncs)
#elif defined(XP_WIN) || defined(XP_OS2)
NPError OSCALL NP_GetEntryPoints(NPPluginFuncs* pFuncs)
#endif
#if defined(XP_MACOSX) || defined(XP_WIN) || defined(XP_OS2)
{
  fillPluginFunctionTable(pFuncs);
  return NPERR_NO_ERROR;
}
#endif

#if defined(XP_UNIX)
NP_EXPORT(NPError) NP_Shutdown()
#elif defined(XP_WIN) || defined(XP_OS2)
NPError OSCALL NP_Shutdown()
#endif
{
  clearIdentifiers();

  return NPERR_NO_ERROR;
}

NPError
NPP_New(NPMIMEType pluginType, NPP instance, uint16_t mode, int16_t argc, char* argn[], char* argv[], NPSavedData* saved)
{
  // Make sure we can render this plugin
  NPBool browserSupportsWindowless = false;
  NPN_GetValue(instance, NPNVSupportsWindowless, &browserSupportsWindowless);
  if (!browserSupportsWindowless && !pluginSupportsWindowMode()) {
    printf("Windowless mode not supported by the browser, windowed mode not supported by the plugin!\n");
    return NPERR_GENERIC_ERROR;
  }

  // set up our our instance data
  InstanceData* instanceData = new InstanceData;
  if (!instanceData)
    return NPERR_OUT_OF_MEMORY_ERROR;
  instanceData->npp = instance;
  instanceData->streamMode = NP_ASFILEONLY;
  instanceData->testFunction = FUNCTION_NONE;
  instanceData->functionToFail = FUNCTION_NONE;
  instanceData->failureCode = 0;
  instanceData->streamChunkSize = 1024;
  instanceData->streamBuf = NULL;
  instanceData->streamBufSize = 0;
  instanceData->fileBuf = NULL;
  instanceData->fileBufSize = 0;
  instanceData->throwOnNextInvoke = false;
  instanceData->testrange = NULL;
  instanceData->hasWidget = false;
  instanceData->npnNewStream = false;
  instanceData->writeCount = 0;
  instanceData->writeReadyCount = 0;
  memset(&instanceData->window, 0, sizeof(instanceData->window));
  instance->pdata = instanceData;

  TestNPObject* scriptableObject = (TestNPObject*)NPN_CreateObject(instance, &sNPClass);
  if (!scriptableObject) {
    printf("NPN_CreateObject failed to create an object, can't create a plugin instance\n");
    free(instanceData);
    return NPERR_GENERIC_ERROR;
  }
  NPN_RetainObject(scriptableObject);
  scriptableObject->npp = instance;
  scriptableObject->drawMode = DM_DEFAULT;
  scriptableObject->drawColor = 0;
  instanceData->scriptableObject = scriptableObject;

  instanceData->instanceCountWatchGeneration = sCurrentInstanceCountWatchGeneration;
  
  bool requestWindow = false;
  // handle extra params
  for (int i = 0; i < argc; i++) {
    if (strcmp(argn[i], "drawmode") == 0) {
      if (strcmp(argv[i], "solid") == 0)
        scriptableObject->drawMode = DM_SOLID_COLOR;    
    }
    else if (strcmp(argn[i], "color") == 0) {
      scriptableObject->drawColor = parseHexColor(argv[i], strlen(argv[i]));
    }
    else if (strcmp(argn[i], "wmode") == 0) {
      if (strcmp(argv[i], "window") == 0) {
        requestWindow = true;
      }
    }
	  if (strcmp(argn[i], "streammode") == 0) {
      if (strcmp(argv[i], "normal") == 0) {
        instanceData->streamMode = NP_NORMAL;
      }
      else if ((strcmp(argv[i], "asfile") == 0) &&
                strlen(argv[i]) == strlen("asfile")) {
        instanceData->streamMode = NP_ASFILE;
      }
      else if (strcmp(argv[i], "asfileonly") == 0) {
        instanceData->streamMode = NP_ASFILEONLY;
      }
      else if (strcmp(argv[i], "seek") == 0) {
        instanceData->streamMode = NP_SEEK;
      }
	  }
    if (strcmp(argn[i], "streamchunksize") == 0) {
      instanceData->streamChunkSize = atoi(argv[i]);
    }
    if (strcmp(argn[i], "failurecode") == 0) {
      instanceData->failureCode = atoi(argv[i]);
    }
    if (strcmp(argn[i], "functiontofail") == 0) {
      instanceData->functionToFail = getFuncFromString(argv[i]);
    }
    if (strcmp(argn[i], "geturl") == 0) {
      instanceData->testUrl = argv[i];
      instanceData->testFunction = FUNCTION_NPP_GETURL;
    }
    if (strcmp(argn[i], "posturl") == 0) {
      instanceData->testUrl = argv[i];
      instanceData->testFunction = FUNCTION_NPP_POSTURL;
    }
    if (strcmp(argn[i], "geturlnotify") == 0) {
      instanceData->testUrl = argv[i];
      instanceData->testFunction = FUNCTION_NPP_GETURLNOTIFY;
    }
    if (strcmp(argn[i], "postmode") == 0) {
      if (strcmp(argv[i], "frame") == 0) {
        instanceData->postMode = POSTMODE_FRAME;
      }
      else if (strcmp(argv[i], "stream") == 0) {
        instanceData->postMode = POSTMODE_STREAM;
      }
    }
    if (strcmp(argn[i], "frame") == 0) {
      instanceData->frame = argv[i];
    }
    if (strcmp(argn[i], "range") == 0) {
      string range = argv[i];
      size_t semicolon = range.find(';');
      while (semicolon != string::npos) {
        addRange(instanceData, range.substr(0, semicolon).c_str());
        if (semicolon == range.length()) {
          range = "";
          break;
        }
        range = range.substr(semicolon + 1);
        semicolon = range.find(';');
      }
      if (range.length()) addRange(instanceData, range.c_str());
    }
    if (strcmp(argn[i], "newstream") == 0 &&
        strcmp(argv[i], "true") == 0) {
      instanceData->npnNewStream = true;
    }
  }

  if (!browserSupportsWindowless || !pluginSupportsWindowlessMode()) {
    requestWindow = true;
  } else if (!pluginSupportsWindowMode()) {
    requestWindow = false;
  }
  if (requestWindow) {
    instanceData->hasWidget = true;
  } else {
    // NPPVpluginWindowBool should default to true, so we may as well
    // test that by not setting it in the window case
    NPN_SetValue(instance, NPPVpluginWindowBool, (void*)false);
  }

  if (scriptableObject->drawMode == DM_SOLID_COLOR &&
      (scriptableObject->drawColor & 0xFF000000) != 0xFF000000) {
    NPN_SetValue(instance, NPPVpluginTransparentBool, (void*)true);
  }

  instanceData->lastReportedPrivateModeState = false;
  instanceData->lastMouseX = instanceData->lastMouseY = -1;
  instanceData->paintCount = 0;

  // do platform-specific initialization
  NPError err = pluginInstanceInit(instanceData);
  if (err != NPERR_NO_ERROR) {
    NPN_ReleaseObject(scriptableObject);
    free(instanceData);
    return err;
  }

  NPVariant variantTrue;
  BOOLEAN_TO_NPVARIANT(true, variantTrue);

  // Set a property on NPNVPluginElementNPObject
  NPObject* o = NULL;
  err = NPN_GetValue(instance, NPNVPluginElementNPObject, &o);
  if (err == NPERR_NO_ERROR) {
    NPN_SetProperty(instance, o,
                    NPN_GetStringIdentifier("pluginFoundElement"), &variantTrue);
    NPN_ReleaseObject(o);
    o = NULL;
  }
  
  // Set a property on NPNVWindowNPObject
  err = NPN_GetValue(instance, NPNVWindowNPObject, &o);
  if (err == NPERR_NO_ERROR) {
    NPN_SetProperty(instance, o,
                    NPN_GetStringIdentifier("pluginFoundWindow"), &variantTrue);
    NPN_ReleaseObject(o);
    o = NULL;
  }

  ++sInstanceCount;

  if (instanceData->testFunction == FUNCTION_NPP_GETURL) {
    NPError err = NPN_GetURL(instance, instanceData->testUrl.c_str(), NULL);
    if (err != NPERR_NO_ERROR) {
      instanceData->err << "NPN_GetURL returned " << err;
    }
  }
  else if (instanceData->testFunction == FUNCTION_NPP_GETURLNOTIFY) {
    NPError err = NPN_GetURLNotify(instance, instanceData->testUrl.c_str(), 
        NULL, (void *)NPN_GetURLNotifyCookie);
    if (err != NPERR_NO_ERROR) {
      instanceData->err << "NPN_GetURLNotify returned " << err;
    }
  }

  return NPERR_NO_ERROR;
}

NPError
NPP_Destroy(NPP instance, NPSavedData** save)
{
  printf("NPP_Destroy\n");
  InstanceData* instanceData = (InstanceData*)(instance->pdata);

  if (instanceData->streamBuf) {
    free(instanceData->streamBuf);
  }
  if (instanceData->fileBuf) {
    free(instanceData->fileBuf);
  }

  TestRange* currentrange = instanceData->testrange;
  TestRange* nextrange;
  while (currentrange != NULL) {
    nextrange = reinterpret_cast<TestRange*>(currentrange->next);
    delete currentrange;
    currentrange = nextrange;
  }

  pluginInstanceShutdown(instanceData);
  NPN_ReleaseObject(instanceData->scriptableObject);

  if (sCurrentInstanceCountWatchGeneration == instanceData->instanceCountWatchGeneration) {
    --sInstanceCount;
  }
  delete instanceData;

  return NPERR_NO_ERROR;
}

NPError
NPP_SetWindow(NPP instance, NPWindow* window)
{
  InstanceData* instanceData = (InstanceData*)(instance->pdata);
  void* oldWindow = instanceData->window.window;
  pluginDoSetWindow(instanceData, window);
  if (instanceData->hasWidget && oldWindow != instanceData->window.window) {
    pluginWidgetInit(instanceData, oldWindow);
  }
  return NPERR_NO_ERROR;
}

NPError
NPP_NewStream(NPP instance, NPMIMEType type, NPStream* stream, NPBool seekable, uint16_t* stype)
{
  printf("NPP_NewStream\n");
  InstanceData* instanceData = (InstanceData*)(instance->pdata);
  
  if (instanceData->functionToFail == FUNCTION_NPP_NEWSTREAM &&
      instanceData->failureCode) {
    instanceData->err << SUCCESS_STRING;
    if (instanceData->frame.length() > 0) {
      sendBufferToFrame(instance);
    }
    return instanceData->failureCode;
  }
  
  *stype = instanceData->streamMode;

  if (instanceData->streamBufSize) {
    free(instanceData->streamBuf);
    instanceData->streamBufSize = 0;
    if (instanceData->testFunction == FUNCTION_NPP_POSTURL &&
      instanceData->postMode == POSTMODE_STREAM) {
      instanceData->testFunction = FUNCTION_NPP_GETURL;
    }
  }
  return NPERR_NO_ERROR;
}

NPError
NPP_DestroyStream(NPP instance, NPStream* stream, NPReason reason)
{
  printf("NPP_DestroyStream\n");
  InstanceData* instanceData = (InstanceData*)(instance->pdata);

  if (instanceData->functionToFail == FUNCTION_NPP_NEWSTREAM) {
    instanceData->err << "NPP_DestroyStream called";
  }

  if (instanceData->functionToFail == FUNCTION_NPP_WRITE) {
    if (instanceData->writeCount == 1)
      instanceData->err << SUCCESS_STRING;
    else
      instanceData->err << "NPP_Write called after returning -1";
  }

  if (instanceData->functionToFail == FUNCTION_NPP_DESTROYSTREAM &&
      instanceData->failureCode) {
    instanceData->err << SUCCESS_STRING;
    if (instanceData->frame.length() > 0) {
      sendBufferToFrame(instance);
    }
    return instanceData->failureCode;
  }

  if (instanceData->streamMode == NP_ASFILE &&
      instanceData->functionToFail == FUNCTION_NONE) {
    if (strcmp(reinterpret_cast<char *>(instanceData->fileBuf), 
      reinterpret_cast<char *>(instanceData->streamBuf)) != 0) {
      instanceData->err <<
        "Error: data passed to NPP_Write and NPP_StreamAsFile differed";
    }
  }
  if (instanceData->frame.length() > 0 && 
      instanceData->testFunction != FUNCTION_NPP_GETURLNOTIFY &&
      instanceData->testFunction != FUNCTION_NPP_POSTURL) {
    sendBufferToFrame(instance);
  }
  if (instanceData->testFunction == FUNCTION_NPP_POSTURL) {
    NPError err = NPN_PostURL(instance, instanceData->testUrl.c_str(), 
      instanceData->postMode == POSTMODE_FRAME ? instanceData->frame.c_str() : NULL, 
      instanceData->streamBufSize,
      reinterpret_cast<char *>(instanceData->streamBuf), false);
    if (err != NPERR_NO_ERROR)
      instanceData->err << "Error: NPN_PostURL returned error value " << err;
  }
  return NPERR_NO_ERROR;
}

int32_t
NPP_WriteReady(NPP instance, NPStream* stream)
{
  printf("NPP_WriteReady\n");
  InstanceData* instanceData = (InstanceData*)(instance->pdata);
  instanceData->writeReadyCount++;
  if (instanceData->functionToFail == FUNCTION_NPP_NEWSTREAM) {
    instanceData->err << "NPP_WriteReady called";
  }
  
  // temporarily disabled per bug 519870
  //if (instanceData->writeReadyCount == 1) {
  //  return 0;
  //}

  return instanceData->streamChunkSize;
}

int32_t
NPP_Write(NPP instance, NPStream* stream, int32_t offset, int32_t len, void* buffer)
{
  printf("NPP_Write, offset=%d, len=%d, end=%d\n", offset, len, stream->end);
  InstanceData* instanceData = (InstanceData*)(instance->pdata);
  instanceData->writeCount++;

  // temporarily disabled per bug 519870
  //if (instanceData->writeReadyCount == 1) {
  //  instanceData->err << "NPP_Write called even though NPP_WriteReady " <<
  //      "returned 0";
  //}
  
  if (instanceData->functionToFail == FUNCTION_NPP_NEWSTREAM) {
    instanceData->err << "NPP_Write called";
  }

  if (instanceData->functionToFail == FUNCTION_NPP_WRITE) {
    return -1;
  }

  // If the complete stream has been written, and we're doing a seek test,
  // then call NPN_RequestRead.
  if (instanceData->streamMode == NP_SEEK &&
      stream->end != 0 && 
      stream->end == ((uint32_t)instanceData->streamBufSize + len)) {
    // prevent recursion
    instanceData->streamMode = NP_NORMAL;

    if (instanceData->testrange != NULL) {
      NPError err = NPN_RequestRead(stream, instanceData->testrange);
      if (err != NPERR_NO_ERROR) {
        instanceData->err << "NPN_RequestRead returned error %d" << err;
      }
      printf("called NPN_RequestRead, return %d\n", err);
    }
  }

  char* streamBuf = reinterpret_cast<char *>(instanceData->streamBuf);
  if (offset + len <= instanceData->streamBufSize) {
    if (memcmp(buffer, streamBuf + offset, len)) {
      instanceData->err << 
          "Error: data written from NPN_RequestRead doesn't match";
    }
    else {
      printf("data matches!\n");
    }
    TestRange* range = instanceData->testrange;
    bool stillwaiting = false;
    while(range != NULL) {
      if (offset == range->offset &&
        (uint32_t)len == range->length) {
        range->waiting = false;
      }
      if (range->waiting) stillwaiting = true;
      range = reinterpret_cast<TestRange*>(range->next);
    }
    if (!stillwaiting) {
      NPError err = NPN_DestroyStream(instance, stream, NPRES_DONE);
      if (err != NPERR_NO_ERROR) {
        instanceData->err << "Error: NPN_DestroyStream returned " << err;
      }
      if (instanceData->frame.length() > 0) {
        sendBufferToFrame(instance);
      }
    }
  }
  else {
    if (instanceData->streamBufSize == 0) {
      instanceData->streamBuf = malloc(len + 1);
      streamBuf = reinterpret_cast<char *>(instanceData->streamBuf);
    }
    else {
      instanceData->streamBuf = 
        realloc(reinterpret_cast<char *>(instanceData->streamBuf), 
        instanceData->streamBufSize + len + 1);
      streamBuf = reinterpret_cast<char *>(instanceData->streamBuf);
    }
    memcpy(streamBuf + instanceData->streamBufSize, buffer, len);
    instanceData->streamBufSize = instanceData->streamBufSize + len;
    streamBuf[instanceData->streamBufSize] = '\0';
  }
  return len;
}

void
NPP_StreamAsFile(NPP instance, NPStream* stream, const char* fname)
{
  printf("NPP_StreamAsFile, file=%s\n", fname);
  size_t size;

  InstanceData* instanceData = (InstanceData*)(instance->pdata);

  if (instanceData->functionToFail == FUNCTION_NPP_NEWSTREAM ||
      instanceData->functionToFail == FUNCTION_NPP_WRITE) {
    instanceData->err << "NPP_StreamAsFile called";
  }

  if (!fname)
    return;

  FILE *file = fopen(fname, "rb");
  if (file) {
    fseek(file, 0, SEEK_END);
    size = ftell(file);
    instanceData->fileBuf = malloc((int32_t)size + 1);
    char* buf = reinterpret_cast<char *>(instanceData->fileBuf);
    fseek(file, 0, SEEK_SET);
    fread(instanceData->fileBuf, 1, size, file);
    fclose(file);
    buf[size] = '\0';
    instanceData->fileBufSize = (int32_t)size;
  }
  else {
    printf("Unable to open file\n");
    instanceData->err << "Unable to open file " << fname;
  }
}

void
NPP_Print(NPP instance, NPPrint* platformPrint)
{
}

int16_t
NPP_HandleEvent(NPP instance, void* event)
{
  InstanceData* instanceData = (InstanceData*)(instance->pdata);
  return pluginHandleEvent(instanceData, event);
}

void
NPP_URLNotify(NPP instance, const char* url, NPReason reason, void* notifyData)
{
  InstanceData* instanceData = (InstanceData*)(instance->pdata);
  printf("NPP_URLNotify called\n");
  if (strcmp((char*)notifyData, NPN_GetURLNotifyCookie) != 0) {
    printf("ERROR! NPP_URLNotify called with wrong cookie\n");
    instanceData->err << "Error: NPP_URLNotify called with wrong cookie";
  }
  if (instanceData->frame.length() > 0) {
    sendBufferToFrame(instance);
  }
}

NPError
NPP_GetValue(NPP instance, NPPVariable variable, void* value)
{
  InstanceData* instanceData = (InstanceData*)instance->pdata;
  if (variable == NPPVpluginScriptableNPObject) {
    NPObject* object = instanceData->scriptableObject;
    NPN_RetainObject(object);
    *((NPObject**)value) = object;
    return NPERR_NO_ERROR;
  }
  if (variable == NPPVpluginNeedsXEmbed) {
    // Only relevant for X plugins
    *(NPBool*)value = instanceData->hasWidget;
    return NPERR_NO_ERROR;
  }

  return NPERR_GENERIC_ERROR;
}

NPError
NPP_SetValue(NPP instance, NPNVariable variable, void* value)
{
  if (variable == NPNVprivateModeBool) {
    InstanceData* instanceData = (InstanceData*)(instance->pdata);
    instanceData->lastReportedPrivateModeState = bool(*static_cast<NPBool*>(value));
    return NPERR_NO_ERROR;
  }
  return NPERR_GENERIC_ERROR;
}

//
// npapi browser functions
//

bool
NPN_SetProperty(NPP instance, NPObject* obj, NPIdentifier propertyName, const NPVariant* value)
{
  return sBrowserFuncs->setproperty(instance, obj, propertyName, value);
}

NPIdentifier
NPN_GetIntIdentifier(int32_t intid)
{
  return sBrowserFuncs->getintidentifier(intid);
}

NPIdentifier
NPN_GetStringIdentifier(const NPUTF8* name)
{
  return sBrowserFuncs->getstringidentifier(name);
}

void
NPN_GetStringIdentifiers(const NPUTF8 **names, int32_t nameCount, NPIdentifier *identifiers)
{
  return sBrowserFuncs->getstringidentifiers(names, nameCount, identifiers);
}

NPUTF8*
NPN_UTF8FromIdentifier(NPIdentifier identifier)
{
  return sBrowserFuncs->utf8fromidentifier(identifier);
}

int32_t
NPN_IntFromIdentifier(NPIdentifier identifier)
{
  return sBrowserFuncs->intfromidentifier(identifier);
}

NPError
NPN_GetValue(NPP instance, NPNVariable variable, void* value)
{
  return sBrowserFuncs->getvalue(instance, variable, value);
}

NPError
NPN_SetValue(NPP instance, NPPVariable variable, void* value)
{
  return sBrowserFuncs->setvalue(instance, variable, value);
}

void
NPN_InvalidateRect(NPP instance, NPRect* rect)
{
  sBrowserFuncs->invalidaterect(instance, rect);
}

bool
NPN_HasProperty(NPP instance, NPObject* obj, NPIdentifier propertyName)
{
  return sBrowserFuncs->hasproperty(instance, obj, propertyName);
}

NPObject*
NPN_CreateObject(NPP instance, NPClass* aClass)
{
  return sBrowserFuncs->createobject(instance, aClass);
}

bool
NPN_Invoke(NPP npp, NPObject* obj, NPIdentifier methodName, const NPVariant *args, uint32_t argCount, NPVariant *result)
{
  return sBrowserFuncs->invoke(npp, obj, methodName, args, argCount, result);
}

bool
NPN_InvokeDefault(NPP npp, NPObject* obj, const NPVariant *args, uint32_t argCount, NPVariant *result)
{
  return sBrowserFuncs->invokeDefault(npp, obj, args, argCount, result);
}

const char*
NPN_UserAgent(NPP instance)
{
  return sBrowserFuncs->uagent(instance);
}

NPObject*
NPN_RetainObject(NPObject* obj)
{
  return sBrowserFuncs->retainobject(obj);
}

void
NPN_ReleaseObject(NPObject* obj)
{
  return sBrowserFuncs->releaseobject(obj);
}

void*
NPN_MemAlloc(uint32_t size)
{
  return sBrowserFuncs->memalloc(size);
}

void
NPN_MemFree(void* ptr)
{
  return sBrowserFuncs->memfree(ptr);
}

uint32_t
NPN_ScheduleTimer(NPP instance, uint32_t interval, NPBool repeat, void (*timerFunc)(NPP npp, uint32_t timerID))
{
  return sBrowserFuncs->scheduletimer(instance, interval, repeat, timerFunc);
}

void
NPN_UnscheduleTimer(NPP instance, uint32_t timerID)
{
  return sBrowserFuncs->unscheduletimer(instance, timerID);
}

void
NPN_ReleaseVariantValue(NPVariant *variant)
{
  return sBrowserFuncs->releasevariantvalue(variant);
}

NPError
NPN_GetURLNotify(NPP instance, const char* url, const char* target, void* notifyData)
{
  return sBrowserFuncs->geturlnotify(instance, url, target, notifyData);
}

NPError
NPN_GetURL(NPP instance, const char* url, const char* target)
{
  return sBrowserFuncs->geturl(instance, url, target);
}

NPError
NPN_RequestRead(NPStream* stream, NPByteRange* rangeList)
{
  return sBrowserFuncs->requestread(stream, rangeList);
}

NPError
NPN_PostURLNotify(NPP instance, const char* url, 
                  const char* target, uint32_t len, 
                  const char* buf, NPBool file, void* notifyData)
{
  return sBrowserFuncs->posturlnotify(instance, url, target, len, buf, file, notifyData);
}

NPError 
NPN_PostURL(NPP instance, const char *url,
                    const char *target, uint32_t len,
                    const char *buf, NPBool file)
{
  return sBrowserFuncs->posturl(instance, url, target, len, buf, file);
}

NPError
NPN_DestroyStream(NPP instance, NPStream* stream, NPError reason)
{
  return sBrowserFuncs->destroystream(instance, stream, reason);
}

NPError
NPN_NewStream(NPP instance, 
              NPMIMEType  type, 
              const char* target,
              NPStream**  stream)
{
  return sBrowserFuncs->newstream(instance, type, target, stream);
}

int32_t
NPN_Write(NPP instance,
          NPStream* stream,
          int32_t len,
          void* buf)
{
  return sBrowserFuncs->write(instance, stream, len, buf);
}

bool
NPN_Enumerate(NPP instance,
              NPObject *npobj,
              NPIdentifier **identifiers,
              uint32_t *identifierCount)
{
  return sBrowserFuncs->enumerate(instance, npobj, identifiers, 
      identifierCount);
}

bool
NPN_GetProperty(NPP instance,
                NPObject *npobj,
                NPIdentifier propertyName,
                NPVariant *result)
{
  return sBrowserFuncs->getproperty(instance, npobj, propertyName, result);
}

bool
NPN_Evaluate(NPP instance, NPObject *npobj, NPString *script, NPVariant *result)
{
  return sBrowserFuncs->evaluate(instance, npobj, script, result);
}

void
NPN_SetException(NPObject *npobj, const NPUTF8 *message)
{
  return sBrowserFuncs->setexception(npobj, message);
}

NPBool
NPN_ConvertPoint(NPP instance, double sourceX, double sourceY, NPCoordinateSpace sourceSpace, double *destX, double *destY, NPCoordinateSpace destSpace)
{
  return sBrowserFuncs->convertpoint(instance, sourceX, sourceY, sourceSpace, destX, destY, destSpace);
}

//
// npruntime object functions
//

NPObject*
scriptableAllocate(NPP npp, NPClass* aClass)
{
  TestNPObject* object = (TestNPObject*)NPN_MemAlloc(sizeof(TestNPObject));
  if (!object)
    return NULL;
  memset(object, 0, sizeof(TestNPObject));
  return object;
}

void
scriptableDeallocate(NPObject* npobj)
{
  NPN_MemFree(npobj);
}

void
scriptableInvalidate(NPObject* npobj)
{
}

bool
scriptableHasMethod(NPObject* npobj, NPIdentifier name)
{
  for (int i = 0; i < int(ARRAY_LENGTH(sPluginMethodIdentifiers)); i++) {
    if (name == sPluginMethodIdentifiers[i])
      return true;
  }
  return false;
}

bool
scriptableInvoke(NPObject* npobj, NPIdentifier name, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  InstanceData* id = static_cast<InstanceData*>(npp->pdata);
  if (id->throwOnNextInvoke) {
    id->throwOnNextInvoke = false;
    if (argCount == 0) {
      NPN_SetException(npobj, NULL);
    }
    else {
      for (uint32_t i = 0; i < argCount; i++) {
        const NPString* argstr = &NPVARIANT_TO_STRING(args[i]);
        NPN_SetException(npobj, argstr->UTF8Characters);
      }
    }
    return false;
  }
  
  for (int i = 0; i < int(ARRAY_LENGTH(sPluginMethodIdentifiers)); i++) {
    if (name == sPluginMethodIdentifiers[i])
      return sPluginMethodFunctions[i](npobj, args, argCount, result);
  }
  return false;
}

bool
scriptableInvokeDefault(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  InstanceData* id = static_cast<InstanceData*>(npp->pdata);
  if (id->throwOnNextInvoke) {
    id->throwOnNextInvoke = false;
    if (argCount == 0) {
      NPN_SetException(npobj, NULL);
    }
    else {
      for (uint32_t i = 0; i < argCount; i++) {
        const NPString* argstr = &NPVARIANT_TO_STRING(args[i]);
        NPN_SetException(npobj, argstr->UTF8Characters);
      }
    }
    return false;
  }

  ostringstream value;
  value << PLUGIN_NAME;
  for (uint32_t i = 0; i < argCount; i++) {
    switch(args[i].type) {
      case NPVariantType_Int32:
        value << ";" << NPVARIANT_TO_INT32(args[i]);
        break;
      case NPVariantType_String: {
        const NPString* argstr = &NPVARIANT_TO_STRING(args[i]);
        value << ";" << argstr->UTF8Characters;
        break;
      }
      case NPVariantType_Void:
        value << ";undefined";
        break;
      case NPVariantType_Null:
        value << ";null";
        break;
      default:
        value << ";other";
    }
  }
  STRINGZ_TO_NPVARIANT(strdup(value.str().c_str()), *result);
  return true;
}

bool
scriptableHasProperty(NPObject* npobj, NPIdentifier name)
{
  return false;
}

bool
scriptableGetProperty(NPObject* npobj, NPIdentifier name, NPVariant* result)
{
  return false;
}

bool
scriptableSetProperty(NPObject* npobj, NPIdentifier name, const NPVariant* value)
{
  return false;
}

bool
scriptableRemoveProperty(NPObject* npobj, NPIdentifier name)
{
  return false;
}

bool
scriptableEnumerate(NPObject* npobj, NPIdentifier** identifier, uint32_t* count)
{
  return false;
}

bool
scriptableConstruct(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  return false;
}

//
// test functions
//

static bool
compareVariants(NPP instance, const NPVariant* var1, const NPVariant* var2)
{
  bool success = true;
  InstanceData* id = static_cast<InstanceData*>(instance->pdata);
  if (var1->type != var2->type) {
    id->err << "Variant types don't match; got " << var1->type <<
        " expected " << var2->type;
    return false;
  }
  
  switch (var1->type) {
    case NPVariantType_Int32: {
        int32_t result = NPVARIANT_TO_INT32(*var1);
        int32_t expected = NPVARIANT_TO_INT32(*var2);
        if (result != expected) {
          id->err << "Variant values don't match; got " << result <<
              " expected " << expected;
          success = false;
        }
        break;
      }
    case NPVariantType_Double: {
        double result = NPVARIANT_TO_DOUBLE(*var1);
        double expected = NPVARIANT_TO_DOUBLE(*var2);
        if (result != expected) {
          id->err << "Variant values don't match (double)";
          success = false;
        }
        break;
      }
    case NPVariantType_Void: {
        // void values are always equivalent
        break;
      }
    case NPVariantType_Null: {
        // null values are always equivalent
        break;
      }
    case NPVariantType_Bool: {
        bool result = NPVARIANT_TO_BOOLEAN(*var1);
        bool expected = NPVARIANT_TO_BOOLEAN(*var2);
        if (result != expected) {
          id->err << "Variant values don't match (bool)";
          success = false;
        }
        break;
      }
    case NPVariantType_String: {
        const NPString* result = &NPVARIANT_TO_STRING(*var1);
        const NPString* expected = &NPVARIANT_TO_STRING(*var2);
        if (strcmp(result->UTF8Characters, expected->UTF8Characters) ||
            strlen(result->UTF8Characters) != strlen(expected->UTF8Characters)) {
          id->err << "Variant values don't match; got " << 
              result->UTF8Characters << " expected " << 
              expected->UTF8Characters;
          success = false;
        }
        break;
      }
    case NPVariantType_Object: {
        uint32_t i, identifierCount = 0;
        NPIdentifier* identifiers;
        NPObject* result = NPVARIANT_TO_OBJECT(*var1);
        NPObject* expected = NPVARIANT_TO_OBJECT(*var2);
        bool enumerate_result = NPN_Enumerate(instance, expected,
            &identifiers, &identifierCount);
        if (!enumerate_result) {
          id->err << "NPN_Enumerate failed";
          success = false;
        }
        for (i = 0; i < identifierCount; i++) {
          NPVariant resultVariant, expectedVariant;
          if (!NPN_GetProperty(instance, expected, identifiers[i],
              &expectedVariant)) {
            id->err << "NPN_GetProperty returned false";
            success = false;
          }
          else {
            if (!NPN_HasProperty(instance, result, identifiers[i])) {
              id->err << "NPN_HasProperty returned false";
              success = false;
            }
            else {
              if (!NPN_GetProperty(instance, result, identifiers[i],
              &resultVariant)) {
                id->err << "NPN_GetProperty 2 returned false";
                success = false;
              }
              else {
                success = compareVariants(instance, &resultVariant, 
                    &expectedVariant);
                NPN_ReleaseVariantValue(&expectedVariant);
              }
            }
            NPN_ReleaseVariantValue(&resultVariant);
          }
        }
        break;
      }
    default:
      id->err << "Unknown variant type";
      success = false;
  }
  
  return success;
}

static bool
throwExceptionNextInvoke(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  InstanceData* id = static_cast<InstanceData*>(npp->pdata);
  id->throwOnNextInvoke = true;
  BOOLEAN_TO_NPVARIANT(true, *result);
  return true;  
}

static bool
npnInvokeDefaultTest(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  bool success = false;
  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
 
  NPObject* windowObject;
  NPN_GetValue(npp, NPNVWindowNPObject, &windowObject);
  if (!windowObject)
    return false;

  NPIdentifier objectIdentifier = variantToIdentifier(args[0]);
  if (!objectIdentifier)
    return false;

  NPVariant objectVariant;
  if (NPN_GetProperty(npp, windowObject, objectIdentifier,
      &objectVariant)) {
    if (NPVARIANT_IS_OBJECT(objectVariant)) {
      NPObject* selfObject = NPVARIANT_TO_OBJECT(objectVariant);
      if (selfObject != NULL) {
        NPVariant resultVariant;
        if (NPN_InvokeDefault(npp, selfObject, argCount > 1 ? &args[1] : NULL, 
            argCount - 1, &resultVariant)) {
          *result = resultVariant;
          success = true;
        }
      }
    }
    NPN_ReleaseVariantValue(&objectVariant);
  }

  NPN_ReleaseObject(windowObject);
  return success;
}

static bool
npnInvokeTest(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  InstanceData* id = static_cast<InstanceData*>(npp->pdata);
  id->err.str("");
  if (argCount < 2)
    return false;

  NPIdentifier function = variantToIdentifier(args[0]);
  if (!function)
    return false;
  
  NPObject* windowObject;
  NPN_GetValue(npp, NPNVWindowNPObject, &windowObject);
  if (!windowObject)
    return false;
  
  NPVariant invokeResult;
  bool invokeReturn = NPN_Invoke(npp, windowObject, function,
      argCount > 2 ? &args[2] : NULL, argCount - 2, &invokeResult);
      
  bool compareResult = compareVariants(npp, &invokeResult, &args[1]);
      
  NPN_ReleaseObject(windowObject);
  NPN_ReleaseVariantValue(&invokeResult);
  BOOLEAN_TO_NPVARIANT(invokeReturn && compareResult, *result);
  return true;
}

static bool
npnEvaluateTest(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  bool success = false;
  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  
  if (argCount != 1)
    return false;
  
  if (!NPVARIANT_IS_STRING(args[0]))
    return false;

  NPObject* windowObject;
  NPN_GetValue(npp, NPNVWindowNPObject, &windowObject);
  if (!windowObject)
    return false;
  
  success = NPN_Evaluate(npp, windowObject, (NPString*)&NPVARIANT_TO_STRING(args[0]), result);
  
  NPN_ReleaseObject(windowObject);
  return success;
}

static bool
setUndefinedValueTest(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  NPError err = NPN_SetValue(npp, (NPPVariable)0x0, 0x0);
  BOOLEAN_TO_NPVARIANT((err == NPERR_NO_ERROR), *result);
  return true;
}

static bool
identifierToStringTest(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 1)
    return false;
  NPIdentifier identifier = variantToIdentifier(args[0]);
  if (!identifier)
    return false;

  NPUTF8* utf8String = NPN_UTF8FromIdentifier(identifier);
  if (!utf8String)
    return false;
  STRINGZ_TO_NPVARIANT(utf8String, *result);
  return true;
}

static void timerCallback(NPP npp, uint32_t timerID)
{
  InstanceData* id = static_cast<InstanceData*>(npp->pdata);

  NPObject* windowObject;
  NPN_GetValue(npp, NPNVWindowNPObject, &windowObject);
  if (!windowObject)
    return;

  NPVariant rval;
  if (timerID == id->timerID1)
    NPN_Invoke(npp, windowObject, NPN_GetStringIdentifier("shortTimerFired"), NULL, 0, &rval);
  else if (timerID == id->timerID2)
    NPN_Invoke(npp, windowObject, NPN_GetStringIdentifier("longTimerFired"), NULL, 0, &rval);

  NPN_ReleaseObject(windowObject);
}

static bool
timerTest(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  InstanceData* id = static_cast<InstanceData*>(npp->pdata);

  NPObject* windowObject;
  NPN_GetValue(npp, NPNVWindowNPObject, &windowObject);
  if (!windowObject)
    return false;

  id->timerID1 = NPN_ScheduleTimer(npp, 50, false, timerCallback);
  id->timerID2 = NPN_ScheduleTimer(npp, 150, true, timerCallback);

  NPVariant rval;
  NPVariant uniqueIDArgs[1];
  BOOLEAN_TO_NPVARIANT((id->timerID1 != id->timerID2), uniqueIDArgs[0]);
  NPN_Invoke(npp, windowObject, NPN_GetStringIdentifier("uniqueID"), uniqueIDArgs, 1, &rval);
  NPN_ReleaseVariantValue(&uniqueIDArgs[0]);

  NPN_ReleaseObject(windowObject);

  return true;
}

static bool
queryPrivateModeState(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 0)
    return false;

  NPBool pms = false;
  NPN_GetValue(static_cast<TestNPObject*>(npobj)->npp, NPNVprivateModeBool, &pms);
  BOOLEAN_TO_NPVARIANT(pms, *result);
  return true;
}

static bool
lastReportedPrivateModeState(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 0)
    return false;

  InstanceData* id = static_cast<InstanceData*>(static_cast<TestNPObject*>(npobj)->npp->pdata);
  BOOLEAN_TO_NPVARIANT(id->lastReportedPrivateModeState, *result);
  return true;
}

static bool
hasWidget(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 0)
    return false;

  InstanceData* id = static_cast<InstanceData*>(static_cast<TestNPObject*>(npobj)->npp->pdata);
  BOOLEAN_TO_NPVARIANT(id->hasWidget, *result);
  return true;
}

static bool
getEdge(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 1)
    return false;
  if (!NPVARIANT_IS_INT32(args[0]))
    return false;
  int32_t edge = NPVARIANT_TO_INT32(args[0]);
  if (edge < EDGE_LEFT || edge > EDGE_BOTTOM)
    return false;

  InstanceData* id = static_cast<InstanceData*>(static_cast<TestNPObject*>(npobj)->npp->pdata);
  int32_t r = pluginGetEdge(id, RectEdge(edge));
  if (r == NPTEST_INT32_ERROR)
    return false;
  INT32_TO_NPVARIANT(r, *result);
  return true;
}

static bool
getClipRegionRectCount(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 0)
    return false;

  InstanceData* id = static_cast<InstanceData*>(static_cast<TestNPObject*>(npobj)->npp->pdata);
  int32_t r = pluginGetClipRegionRectCount(id);
  if (r == NPTEST_INT32_ERROR)
    return false;
  INT32_TO_NPVARIANT(r, *result);
  return true;
}

static bool
getClipRegionRectEdge(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 2)
    return false;
  if (!NPVARIANT_IS_INT32(args[0]))
    return false;
  int32_t rectIndex = NPVARIANT_TO_INT32(args[0]);
  if (rectIndex < 0)
    return false;
  if (!NPVARIANT_IS_INT32(args[1]))
    return false;
  int32_t edge = NPVARIANT_TO_INT32(args[1]);
  if (edge < EDGE_LEFT || edge > EDGE_BOTTOM)
    return false;

  InstanceData* id = static_cast<InstanceData*>(static_cast<TestNPObject*>(npobj)->npp->pdata);
  int32_t r = pluginGetClipRegionRectEdge(id, rectIndex, RectEdge(edge));
  if (r == NPTEST_INT32_ERROR)
    return false;
  INT32_TO_NPVARIANT(r, *result);
  return true;
}

static bool
startWatchingInstanceCount(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 0)
    return false;
  if (sWatchingInstanceCount)
    return false;

  sWatchingInstanceCount = true;
  sInstanceCount = 0;
  ++sCurrentInstanceCountWatchGeneration;
  return true;
}

static bool
getInstanceCount(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 0)
    return false;
  if (!sWatchingInstanceCount)
    return false;

  INT32_TO_NPVARIANT(sInstanceCount, *result);
  return true;
}

static bool
stopWatchingInstanceCount(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 0)
    return false;
  if (!sWatchingInstanceCount)
    return false;

  sWatchingInstanceCount = false;
  return true;
}

static bool
unscheduleAllTimers(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  InstanceData* id = static_cast<InstanceData*>(npp->pdata);

  NPN_UnscheduleTimer(npp, id->timerID1);
  id->timerID1 = 0;
  NPN_UnscheduleTimer(npp, id->timerID2);
  id->timerID2 = 0;

  return true;
}

static bool
getLastMouseX(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 0)
    return false;

  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  InstanceData* id = static_cast<InstanceData*>(npp->pdata);
  INT32_TO_NPVARIANT(id->lastMouseX, *result);
  return true;
}

static bool
getLastMouseY(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 0)
    return false;

  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  InstanceData* id = static_cast<InstanceData*>(npp->pdata);
  INT32_TO_NPVARIANT(id->lastMouseY, *result);
  return true;
}

static bool
getPaintCount(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 0)
    return false;

  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  InstanceData* id = static_cast<InstanceData*>(npp->pdata);
  INT32_TO_NPVARIANT(id->paintCount, *result);
  return true;
}

static bool
getError(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 0)
    return false;

  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  InstanceData* id = static_cast<InstanceData*>(npp->pdata);
  if (id->err.str().length() == 0)
    STRINGZ_TO_NPVARIANT(strdup(SUCCESS_STRING), *result);
  else
    STRINGZ_TO_NPVARIANT(strdup(id->err.str().c_str()), *result);
  return true;
}

static bool
doInternalConsistencyCheck(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 0)
    return false;

  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  InstanceData* id = static_cast<InstanceData*>(npp->pdata);
  string error;
  pluginDoInternalConsistencyCheck(id, error);
  NPUTF8* utf8String = (NPUTF8*)NPN_MemAlloc(error.length() + 1);
  if (!utf8String) {
    return false;
  }
  memcpy(utf8String, error.c_str(), error.length() + 1);
  STRINGZ_TO_NPVARIANT(utf8String, *result);
  return true;
}

static bool
convertPointX(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 4)
    return false;

  NPP npp = static_cast<TestNPObject*>(npobj)->npp;

  if (!NPVARIANT_IS_INT32(args[0]))
    return false;
  int32_t sourceSpace = NPVARIANT_TO_INT32(args[0]);

  if (!NPVARIANT_IS_INT32(args[1]))
    return false;
  double sourceX = static_cast<double>(NPVARIANT_TO_INT32(args[1]));

  if (!NPVARIANT_IS_INT32(args[2]))
    return false;
  double sourceY = static_cast<double>(NPVARIANT_TO_INT32(args[2]));

  if (!NPVARIANT_IS_INT32(args[3]))
    return false;
  int32_t destSpace = NPVARIANT_TO_INT32(args[3]);

  double resultX, resultY;
  NPN_ConvertPoint(npp, sourceX, sourceY, (NPCoordinateSpace)sourceSpace, &resultX, &resultY, (NPCoordinateSpace)destSpace);

  DOUBLE_TO_NPVARIANT(resultX, *result);
  return true;
}

static bool
convertPointY(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 4)
    return false;

  NPP npp = static_cast<TestNPObject*>(npobj)->npp;

  if (!NPVARIANT_IS_INT32(args[0]))
    return false;
  int32_t sourceSpace = NPVARIANT_TO_INT32(args[0]);

  if (!NPVARIANT_IS_INT32(args[1]))
    return false;
  double sourceX = static_cast<double>(NPVARIANT_TO_INT32(args[1]));

  if (!NPVARIANT_IS_INT32(args[2]))
    return false;
  double sourceY = static_cast<double>(NPVARIANT_TO_INT32(args[2]));

  if (!NPVARIANT_IS_INT32(args[3]))
    return false;
  int32_t destSpace = NPVARIANT_TO_INT32(args[3]);

  double resultX, resultY;
  NPN_ConvertPoint(npp, sourceX, sourceY, (NPCoordinateSpace)sourceSpace, &resultX, &resultY, (NPCoordinateSpace)destSpace);
  
  DOUBLE_TO_NPVARIANT(resultY, *result);
  return true;
}

static bool
setColor(NPObject* npobj, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
  if (argCount != 1)
    return false;
  if (!NPVARIANT_IS_STRING(args[0]))
    return false;
  const NPString* str = &NPVARIANT_TO_STRING(args[0]);

  NPP npp = static_cast<TestNPObject*>(npobj)->npp;
  InstanceData* id = static_cast<InstanceData*>(npp->pdata);

  id->scriptableObject->drawColor =
    parseHexColor(str->UTF8Characters, str->UTF8Length);

  NPRect r;
  r.left = 0;
  r.top = 0;
  r.right = id->window.width;
  r.bottom = id->window.height;
  NPN_InvalidateRect(npp, &r);

  VOID_TO_NPVARIANT(*result);
  return true;
}