mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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358 lines
12 KiB
C++
358 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: sw=4 ts=4 et :
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Plugin App.
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*
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* The Initial Developer of the Original Code is
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* Chris Jones <jones.chris.g@gmail.com>
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef dom_plugins_PluginModuleParent_h
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#define dom_plugins_PluginModuleParent_h 1
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#include <cstring>
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#include "base/basictypes.h"
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#include "prlink.h"
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#include "npapi.h"
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#include "npfunctions.h"
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#include "base/string_util.h"
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#include "mozilla/SharedLibrary.h"
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#include "mozilla/plugins/PPluginModuleParent.h"
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#include "mozilla/plugins/PluginInstanceParent.h"
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#include "mozilla/plugins/PluginProcessParent.h"
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#include "nsAutoPtr.h"
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#include "nsTHashtable.h"
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#include "nsHashKeys.h"
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#undef _MOZ_LOG
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#define _MOZ_LOG(s) printf("[PluginModuleParent] %s\n", s)
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namespace mozilla {
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namespace plugins {
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//-----------------------------------------------------------------------------
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/**
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* PluginModuleParent
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*
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* This class implements the NPP API from the perspective of the rest
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* of Gecko, forwarding NPP calls along to the child process that is
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* actually running the plugin.
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*
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* This class /also/ implements a version of the NPN API, because the
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* child process needs to make these calls back into Gecko proper.
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* This class is responsible for "actually" making those function calls.
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*/
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class PluginModuleParent : public PPluginModuleParent
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{
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private:
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typedef mozilla::SharedLibrary SharedLibrary;
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protected:
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PPluginInstanceParent*
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PPluginInstanceConstructor(const nsCString& aMimeType,
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const uint16_t& aMode,
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const nsTArray<nsCString>& aNames,
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const nsTArray<nsCString>& aValues,
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NPError* rv);
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virtual bool
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PPluginInstanceDestructor(PPluginInstanceParent* aActor,
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NPError* _retval);
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public:
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PluginModuleParent(const char* aFilePath);
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virtual ~PluginModuleParent();
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/**
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* LoadModule
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*
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* Returns a SharedLibrary from which plugin symbols should be
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* resolved. This may or may not launch a plugin child process,
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* and may or may not be very expensive.
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*/
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static SharedLibrary* LoadModule(const char* aFilePath,
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PRLibrary* aLibrary);
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// NPRemoteIdentifier funcs
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virtual bool
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RecvNPN_GetStringIdentifier(const nsCString& aString,
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NPRemoteIdentifier* aId);
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virtual bool
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RecvNPN_GetIntIdentifier(const int32_t& aInt,
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NPRemoteIdentifier* aId);
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virtual bool
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RecvNPN_UTF8FromIdentifier(const NPRemoteIdentifier& aId,
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NPError* err,
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nsCString* aString);
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virtual bool
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RecvNPN_IntFromIdentifier(const NPRemoteIdentifier& aId,
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NPError* err,
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int32_t* aInt);
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virtual bool
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RecvNPN_IdentifierIsString(const NPRemoteIdentifier& aId,
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bool* aIsString);
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virtual bool
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RecvNPN_GetStringIdentifiers(const nsTArray<nsCString>& aNames,
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nsTArray<NPRemoteIdentifier>* aIds);
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private:
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void SetPluginFuncs(NPPluginFuncs* aFuncs);
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// Implement the module-level functions from NPAPI; these are
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// normally resolved directly from the DSO.
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#ifdef OS_LINUX
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NPError NP_Initialize(const NPNetscapeFuncs* npnIface,
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NPPluginFuncs* nppIface);
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#else
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NPError NP_Initialize(const NPNetscapeFuncs* npnIface);
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NPError NP_GetEntryPoints(NPPluginFuncs* nppIface);
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#endif
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NPError NP_Shutdown()
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{
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// FIXME/cjones: shut down all our instances, and kill
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// off the child process
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_MOZ_LOG(__FUNCTION__);
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return 1;
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}
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char* NP_GetPluginVersion()
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{
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_MOZ_LOG(__FUNCTION__);
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return (char*) "0.0";
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}
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char* NP_GetMIMEDescription()
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{
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_MOZ_LOG(__FUNCTION__);
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return (char*) "application/x-foobar";
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}
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NPError NP_GetValue(void *future,
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NPPVariable aVariable, void *aValue)
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{
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_MOZ_LOG(__FUNCTION__);
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return 1;
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}
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// NPP-like API that Gecko calls are trampolined into. These
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// messages then get forwarded along to the plugin instance,
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// and then eventually the child process.
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NPError NPP_New(NPMIMEType pluginType, NPP instance, uint16_t mode,
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int16_t argc, char* argn[], char* argv[],
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NPSavedData* saved);
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static NPError NPP_Destroy(NPP instance, NPSavedData** save);
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static PluginInstanceParent* InstCast(NPP instance);
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static BrowserStreamParent* StreamCast(NPP instance, NPStream* s);
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static NPError NPP_SetWindow(NPP instance, NPWindow* window);
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static NPError NPP_NewStream(NPP instance, NPMIMEType type, NPStream* stream,
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NPBool seekable, uint16_t* stype);
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static NPError NPP_DestroyStream(NPP instance,
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NPStream* stream, NPReason reason);
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static int32_t NPP_WriteReady(NPP instance, NPStream* stream);
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static int32_t NPP_Write(NPP instance, NPStream* stream,
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int32_t offset, int32_t len, void* buffer);
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static void NPP_StreamAsFile(NPP instance,
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NPStream* stream, const char* fname);
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static void NPP_Print(NPP instance, NPPrint* platformPrint);
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static int16_t NPP_HandleEvent(NPP instance, void* event);
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static void NPP_URLNotify(NPP instance, const char* url,
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NPReason reason, void* notifyData);
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static NPError NPP_GetValue(NPP instance,
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NPPVariable variable, void *ret_value);
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static NPError NPP_SetValue(NPP instance, NPNVariable variable,
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void *value);
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NPIdentifier GetValidNPIdentifier(NPRemoteIdentifier aRemoteIdentifier);
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private:
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const char* mFilePath;
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PluginProcessParent mSubprocess;
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const NPNetscapeFuncs* mNPNIface;
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// NPObject interface
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/**
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* I look like a shared library, but return functions that trampoline
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* into my parent class.
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*/
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/************************************************************************
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* HACK!!!
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*
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* TODO/cjones: I want this class to "look" just like a DSO, so as to
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* need to change as few lines of modules/plugin/ as possible. Ideally,
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* we would fill the NPPLuginFuncs interface with pointers to
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* dynamically-allocated functions that trampoline into member functions
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* of this class; this leaves the NPP interface completely unchanged.
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* For example:
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* NP_GetEntryPoints() {
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* return { .newi = new TrampolineFunc(this, ::New); }
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* }
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* NPPluginFuncs nppIface = pluginShim->NP_GetEntryPoints();
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* ...
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* nppIface->newp(...); // trampolines to this->New()
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*
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* But there doesn't seem to be a way to do this in C++ without falling
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* back on assembly language. So for now, we limit ourselves to one
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* plugin DSO open at a time.
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************************************************************************/
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class Shim : public SharedLibrary
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{
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public:
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Shim(PluginModuleParent* aTarget) :
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mTarget(aTarget)
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{
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HACK_target = mTarget;
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}
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virtual ~Shim()
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{
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mTarget = 0;
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}
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virtual symbol_type
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FindSymbol(const char* aSymbolName)
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{
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if (!strcmp("NP_Shutdown", aSymbolName))
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return (symbol_type) NP_Shutdown;
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if (!strcmp("NP_Initialize", aSymbolName))
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return (symbol_type) NP_Initialize;
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if (!strcmp("NP_GetMIMEDescription", aSymbolName))
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return (symbol_type) NP_GetMIMEDescription;
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if (!strcmp("NP_GetValue", aSymbolName))
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return (symbol_type) NP_GetValue;
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#ifdef OS_WIN
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if (!strcmp("NP_GetEntryPoints", aSymbolName))
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return (symbol_type) NP_GetEntryPoints;
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#endif
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_MOZ_LOG("WARNING! FAILED TO FIND SYMBOL");
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return 0;
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}
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virtual function_type
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FindFunctionSymbol(const char* aSymbolName)
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{
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if (!strcmp("NP_Shutdown", aSymbolName))
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return (function_type) NP_Shutdown;
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if (!strcmp("NP_Initialize", aSymbolName))
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return (function_type) NP_Initialize;
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if (!strcmp("NP_GetMIMEDescription", aSymbolName))
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return (function_type) NP_GetMIMEDescription;
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if (!strcmp("NP_GetValue", aSymbolName))
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return (function_type) NP_GetValue;
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#ifdef OS_WINDOWS
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if (!strcmp("NP_GetEntryPoints", aSymbolName))
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return (function_type) NP_GetEntryPoints;
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#endif
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_MOZ_LOG("WARNING! FAILED TO FIND SYMBOL");
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return 0;
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}
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private:
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PluginModuleParent* mTarget;
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// HACKS HACKS HACKS! from here on down
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#ifdef OS_LINUX
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static NPError NP_Initialize(const NPNetscapeFuncs* npnIface,
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NPPluginFuncs* nppIface)
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{
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return HACK_target->NP_Initialize(npnIface, nppIface);
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}
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#else
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static NPError NP_Initialize(const NPNetscapeFuncs* npnIface)
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{
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return HACK_target->NP_Initialize(npnIface);
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}
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static NPError NP_GetEntryPoints(NPPluginFuncs* nppIface)
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{
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return HACK_target->NP_GetEntryPoints(nppIface);
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}
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#endif
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static NPError NP_Shutdown()
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{
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return HACK_target->NP_Shutdown();
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}
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static char* NP_GetPluginVersion()
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{
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return HACK_target->NP_GetPluginVersion();
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}
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static char* NP_GetMIMEDescription()
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{
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return HACK_target->NP_GetMIMEDescription();
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}
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static NPError NP_GetValue(void *future,
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NPPVariable aVariable, void *aValue)
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{
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return HACK_target->NP_GetValue(future, aVariable, aValue);
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}
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static NPError NPP_New(NPMIMEType pluginType, NPP instance,
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uint16_t mode,
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int16_t argc, char* argn[], char* argv[],
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NPSavedData* saved)
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{
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return HACK_target->NPP_New(pluginType, instance, mode,
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argc, argn, argv,
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saved);
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}
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static PluginModuleParent* HACK_target;
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friend class PluginModuleParent;
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};
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friend class Shim;
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Shim* mShim;
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nsTHashtable<nsVoidPtrHashKey> mValidIdentifiers;
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};
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} // namespace plugins
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} // namespace mozilla
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#endif // ifndef dom_plugins_PluginModuleParent_h
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