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gecko/dom/plugins/PluginModuleParent.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: sw=4 ts=4 et :
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Plugin App.
*
* The Initial Developer of the Original Code is
* Chris Jones <jones.chris.g@gmail.com>
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef dom_plugins_PluginModuleParent_h
#define dom_plugins_PluginModuleParent_h 1
#include <cstring>
#include "base/basictypes.h"
#include "prlink.h"
#include "npapi.h"
#include "npfunctions.h"
#include "base/string_util.h"
#include "mozilla/PluginLibrary.h"
#include "mozilla/plugins/PPluginModuleParent.h"
#include "mozilla/plugins/PluginInstanceParent.h"
#include "mozilla/plugins/PluginProcessParent.h"
#include "nsAutoPtr.h"
#include "nsTHashtable.h"
#include "nsHashKeys.h"
namespace mozilla {
namespace plugins {
//-----------------------------------------------------------------------------
class BrowserStreamParent;
/**
* PluginModuleParent
*
* This class implements the NPP API from the perspective of the rest
* of Gecko, forwarding NPP calls along to the child process that is
* actually running the plugin.
*
* This class /also/ implements a version of the NPN API, because the
* child process needs to make these calls back into Gecko proper.
* This class is responsible for "actually" making those function calls.
*/
class PluginModuleParent : public PPluginModuleParent, PluginLibrary
{
private:
typedef mozilla::PluginLibrary PluginLibrary;
protected:
PPluginInstanceParent*
AllocPPluginInstance(const nsCString& aMimeType,
const uint16_t& aMode,
const nsTArray<nsCString>& aNames,
const nsTArray<nsCString>& aValues,
NPError* rv);
virtual bool
DeallocPPluginInstance(PPluginInstanceParent* aActor);
public:
PluginModuleParent(const char* aFilePath);
virtual ~PluginModuleParent();
NS_OVERRIDE virtual void SetPlugin(nsNPAPIPlugin* plugin)
{
mPlugin = plugin;
}
NS_OVERRIDE virtual void ActorDestroy(ActorDestroyReason why);
/**
* LoadModule
*
* This may or may not launch a plugin child process,
* and may or may not be very expensive.
*/
static PluginLibrary* LoadModule(const char* aFilePath);
virtual bool
AnswerNPN_UserAgent(nsCString* userAgent);
// NPRemoteIdentifier funcs
virtual bool
RecvNPN_GetStringIdentifier(const nsCString& aString,
NPRemoteIdentifier* aId);
virtual bool
RecvNPN_GetIntIdentifier(const int32_t& aInt,
NPRemoteIdentifier* aId);
virtual bool
RecvNPN_UTF8FromIdentifier(const NPRemoteIdentifier& aId,
NPError* err,
nsCString* aString);
virtual bool
RecvNPN_IntFromIdentifier(const NPRemoteIdentifier& aId,
NPError* err,
int32_t* aInt);
virtual bool
RecvNPN_IdentifierIsString(const NPRemoteIdentifier& aId,
bool* aIsString);
virtual bool
RecvNPN_GetStringIdentifiers(const nsTArray<nsCString>& aNames,
nsTArray<NPRemoteIdentifier>* aIds);
virtual bool
AnswerNPN_GetValue_WithBoolReturn(const NPNVariable& aVariable,
NPError* aError,
bool* aBoolVal);
const NPNetscapeFuncs* GetNetscapeFuncs() {
return mNPNIface;
}
static PluginInstanceParent* InstCast(NPP instance);
static BrowserStreamParent* StreamCast(NPP instance, NPStream* s);
bool EnsureValidNPIdentifier(NPIdentifier aIdentifier);
base::ProcessHandle ChildProcessHandle() { return mSubprocess->GetChildProcessHandle(); }
private:
void SetPluginFuncs(NPPluginFuncs* aFuncs);
// Implement the module-level functions from NPAPI; these are
// normally resolved directly from the DSO.
#ifdef OS_LINUX
NPError NP_Initialize(const NPNetscapeFuncs* npnIface,
NPPluginFuncs* nppIface);
#else
NPError NP_Initialize(const NPNetscapeFuncs* npnIface);
NPError NP_GetEntryPoints(NPPluginFuncs* nppIface);
#endif
// NPP-like API that Gecko calls are trampolined into. These
// messages then get forwarded along to the plugin instance,
// and then eventually the child process.
static NPError NPP_Destroy(NPP instance, NPSavedData** save);
static NPError NPP_SetWindow(NPP instance, NPWindow* window);
static NPError NPP_NewStream(NPP instance, NPMIMEType type, NPStream* stream,
NPBool seekable, uint16_t* stype);
static NPError NPP_DestroyStream(NPP instance,
NPStream* stream, NPReason reason);
static int32_t NPP_WriteReady(NPP instance, NPStream* stream);
static int32_t NPP_Write(NPP instance, NPStream* stream,
int32_t offset, int32_t len, void* buffer);
static void NPP_StreamAsFile(NPP instance,
NPStream* stream, const char* fname);
static void NPP_Print(NPP instance, NPPrint* platformPrint);
static int16_t NPP_HandleEvent(NPP instance, void* event);
static void NPP_URLNotify(NPP instance, const char* url,
NPReason reason, void* notifyData);
static NPError NPP_GetValue(NPP instance,
NPPVariable variable, void *ret_value);
static NPError NPP_SetValue(NPP instance, NPNVariable variable,
void *value);
NPIdentifier GetValidNPIdentifier(NPRemoteIdentifier aRemoteIdentifier);
virtual bool HasRequiredFunctions();
#if defined(XP_UNIX) && !defined(XP_MACOSX)
virtual nsresult NP_Initialize(NPNetscapeFuncs* bFuncs, NPPluginFuncs* pFuncs, NPError* error);
#else
virtual nsresult NP_Initialize(NPNetscapeFuncs* bFuncs, NPError* error);
#endif
virtual nsresult NP_Shutdown(NPError* error);
virtual nsresult NP_GetMIMEDescription(char** mimeDesc);
virtual nsresult NP_GetValue(void *future, NPPVariable aVariable,
void *aValue, NPError* error);
#if defined(XP_WIN) || defined(XP_MACOSX) || defined(XP_OS2)
virtual nsresult NP_GetEntryPoints(NPPluginFuncs* pFuncs, NPError* error);
#endif
virtual nsresult NPP_New(NPMIMEType pluginType, NPP instance,
uint16_t mode, int16_t argc, char* argn[],
char* argv[], NPSavedData* saved,
NPError* error);
private:
PluginProcessParent* mSubprocess;
bool mShutdown;
const NPNetscapeFuncs* mNPNIface;
nsTHashtable<nsVoidPtrHashKey> mValidIdentifiers;
nsNPAPIPlugin* mPlugin;
};
} // namespace plugins
} // namespace mozilla
#endif // ifndef dom_plugins_PluginModuleParent_h
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