gecko-dev/dom/plugins/base/nsNPAPIPlugin.h

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C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsNPAPIPlugin_h_
#define nsNPAPIPlugin_h_
#include "prlink.h"
#include "npfunctions.h"
#include "nsPluginHost.h"
#include "jsapi.h"
#include "mozilla/PluginLibrary.h"
/*
* Use this macro before each exported function
* (between the return address and the function
* itself), to ensure that the function has the
* right calling conventions on OS/2.
*/
#ifdef XP_OS2
#define NP_CALLBACK _System
#else
#define NP_CALLBACK
#endif
#if defined(XP_WIN)
#define NS_NPAPIPLUGIN_CALLBACK(_type, _name) _type (__stdcall * _name)
#elif defined(XP_OS2)
#define NS_NPAPIPLUGIN_CALLBACK(_type, _name) _type (_System * _name)
#else
#define NS_NPAPIPLUGIN_CALLBACK(_type, _name) _type (* _name)
#endif
typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_GETENTRYPOINTS) (NPPluginFuncs* pCallbacks);
typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_PLUGININIT) (const NPNetscapeFuncs* pCallbacks);
typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_PLUGINUNIXINIT) (const NPNetscapeFuncs* pCallbacks, NPPluginFuncs* fCallbacks);
typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_PLUGINSHUTDOWN) ();
class nsNPAPIPlugin : public nsISupports
{
private:
typedef mozilla::PluginLibrary PluginLibrary;
public:
nsNPAPIPlugin();
virtual ~nsNPAPIPlugin();
NS_DECL_ISUPPORTS
// Constructs and initializes an nsNPAPIPlugin object. A NULL file path
// will prevent this from calling NP_Initialize.
static nsresult CreatePlugin(nsPluginTag *aPluginTag, nsNPAPIPlugin** aResult);
PluginLibrary* GetLibrary();
// PluginFuncs() can't fail but results are only valid if GetLibrary() succeeds
NPPluginFuncs* PluginFuncs();
#if defined(XP_MACOSX) && !defined(__LP64__)
void SetPluginRefNum(short aRefNum);
#endif
// The IPC mechanism notifies the nsNPAPIPlugin if the plugin
// crashes and is no longer usable. pluginDumpID/browserDumpID are
// the IDs of respective minidumps that were written, or empty if no
// minidump was written.
void PluginCrashed(const nsAString& pluginDumpID,
const nsAString& browserDumpID);
static bool RunPluginOOP(const nsPluginTag *aPluginTag);
nsresult Shutdown();
static nsresult RetainStream(NPStream *pstream, nsISupports **aRetainedPeer);
protected:
NPPluginFuncs mPluginFuncs;
PluginLibrary* mLibrary;
};
namespace mozilla {
namespace plugins {
namespace parent {
JS_STATIC_ASSERT(sizeof(NPIdentifier) == sizeof(jsid));
inline jsid
NPIdentifierToJSId(NPIdentifier id)
{
jsid tmp;
JSID_BITS(tmp) = (size_t)id;
return tmp;
}
inline NPIdentifier
JSIdToNPIdentifier(jsid id)
{
return (NPIdentifier)JSID_BITS(id);
}
inline bool
NPIdentifierIsString(NPIdentifier id)
{
return JSID_IS_STRING(NPIdentifierToJSId(id));
}
inline JSString *
NPIdentifierToString(NPIdentifier id)
{
return JSID_TO_STRING(NPIdentifierToJSId(id));
}
inline NPIdentifier
StringToNPIdentifier(JSContext *cx, JSString *str)
{
return JSIdToNPIdentifier(INTERNED_STRING_TO_JSID(cx, str));
}
inline bool
NPIdentifierIsInt(NPIdentifier id)
{
return JSID_IS_INT(NPIdentifierToJSId(id));
}
inline int
NPIdentifierToInt(NPIdentifier id)
{
return JSID_TO_INT(NPIdentifierToJSId(id));
}
inline NPIdentifier
IntToNPIdentifier(int i)
{
return JSIdToNPIdentifier(INT_TO_JSID(i));
}
JSContext* GetJSContext(NPP npp);
inline bool
NPStringIdentifierIsPermanent(NPP npp, NPIdentifier id)
{
JSContext* cx = GetJSContext(npp);
if (!cx) // OOM?
return false;
JSAutoRequest ar(cx);
return JS_StringHasBeenInterned(cx, NPIdentifierToString(id));
}
#define NPIdentifier_VOID (JSIdToNPIdentifier(JSID_VOID))
NPObject* NP_CALLBACK
_getwindowobject(NPP npp);
NPObject* NP_CALLBACK
_getpluginelement(NPP npp);
NPIdentifier NP_CALLBACK
_getstringidentifier(const NPUTF8* name);
void NP_CALLBACK
_getstringidentifiers(const NPUTF8** names, int32_t nameCount,
NPIdentifier *identifiers);
bool NP_CALLBACK
_identifierisstring(NPIdentifier identifiers);
NPIdentifier NP_CALLBACK
_getintidentifier(int32_t intid);
NPUTF8* NP_CALLBACK
_utf8fromidentifier(NPIdentifier identifier);
int32_t NP_CALLBACK
_intfromidentifier(NPIdentifier identifier);
NPObject* NP_CALLBACK
_createobject(NPP npp, NPClass* aClass);
NPObject* NP_CALLBACK
_retainobject(NPObject* npobj);
void NP_CALLBACK
_releaseobject(NPObject* npobj);
bool NP_CALLBACK
_invoke(NPP npp, NPObject* npobj, NPIdentifier method, const NPVariant *args,
uint32_t argCount, NPVariant *result);
bool NP_CALLBACK
_invokeDefault(NPP npp, NPObject* npobj, const NPVariant *args,
uint32_t argCount, NPVariant *result);
bool NP_CALLBACK
_evaluate(NPP npp, NPObject* npobj, NPString *script, NPVariant *result);
bool NP_CALLBACK
_getproperty(NPP npp, NPObject* npobj, NPIdentifier property,
NPVariant *result);
bool NP_CALLBACK
_setproperty(NPP npp, NPObject* npobj, NPIdentifier property,
const NPVariant *value);
bool NP_CALLBACK
_removeproperty(NPP npp, NPObject* npobj, NPIdentifier property);
bool NP_CALLBACK
_hasproperty(NPP npp, NPObject* npobj, NPIdentifier propertyName);
bool NP_CALLBACK
_hasmethod(NPP npp, NPObject* npobj, NPIdentifier methodName);
bool NP_CALLBACK
_enumerate(NPP npp, NPObject *npobj, NPIdentifier **identifier,
uint32_t *count);
bool NP_CALLBACK
_construct(NPP npp, NPObject* npobj, const NPVariant *args,
uint32_t argCount, NPVariant *result);
void NP_CALLBACK
_releasevariantvalue(NPVariant *variant);
void NP_CALLBACK
_setexception(NPObject* npobj, const NPUTF8 *message);
void NP_CALLBACK
_pushpopupsenabledstate(NPP npp, NPBool enabled);
void NP_CALLBACK
_poppopupsenabledstate(NPP npp);
typedef void(*PluginThreadCallback)(void *);
void NP_CALLBACK
_pluginthreadasynccall(NPP instance, PluginThreadCallback func,
void *userData);
NPError NP_CALLBACK
_getvalueforurl(NPP instance, NPNURLVariable variable, const char *url,
char **value, uint32_t *len);
NPError NP_CALLBACK
_setvalueforurl(NPP instance, NPNURLVariable variable, const char *url,
const char *value, uint32_t len);
NPError NP_CALLBACK
_getauthenticationinfo(NPP instance, const char *protocol, const char *host,
int32_t port, const char *scheme, const char *realm,
char **username, uint32_t *ulen, char **password,
uint32_t *plen);
typedef void(*PluginTimerFunc)(NPP npp, uint32_t timerID);
uint32_t NP_CALLBACK
_scheduletimer(NPP instance, uint32_t interval, NPBool repeat, PluginTimerFunc timerFunc);
void NP_CALLBACK
_unscheduletimer(NPP instance, uint32_t timerID);
NPError NP_CALLBACK
_popupcontextmenu(NPP instance, NPMenu* menu);
NPError NP_CALLBACK
_initasyncsurface(NPP instance, NPSize *size, NPImageFormat format, void *initData, NPAsyncSurface *surface);
NPError NP_CALLBACK
_finalizeasyncsurface(NPP instance, NPAsyncSurface *surface);
void NP_CALLBACK
_setcurrentasyncsurface(NPP instance, NPAsyncSurface *surface, NPRect *changed);
NPBool NP_CALLBACK
_convertpoint(NPP instance, double sourceX, double sourceY, NPCoordinateSpace sourceSpace, double *destX, double *destY, NPCoordinateSpace destSpace);
NPError NP_CALLBACK
_requestread(NPStream *pstream, NPByteRange *rangeList);
NPError NP_CALLBACK
_geturlnotify(NPP npp, const char* relativeURL, const char* target,
void* notifyData);
NPError NP_CALLBACK
_getvalue(NPP npp, NPNVariable variable, void *r_value);
NPError NP_CALLBACK
_setvalue(NPP npp, NPPVariable variable, void *r_value);
NPError NP_CALLBACK
_geturl(NPP npp, const char* relativeURL, const char* target);
NPError NP_CALLBACK
_posturlnotify(NPP npp, const char* relativeURL, const char *target,
uint32_t len, const char *buf, NPBool file, void* notifyData);
NPError NP_CALLBACK
_posturl(NPP npp, const char* relativeURL, const char *target, uint32_t len,
const char *buf, NPBool file);
NPError NP_CALLBACK
_newstream(NPP npp, NPMIMEType type, const char* window, NPStream** pstream);
int32_t NP_CALLBACK
_write(NPP npp, NPStream *pstream, int32_t len, void *buffer);
NPError NP_CALLBACK
_destroystream(NPP npp, NPStream *pstream, NPError reason);
void NP_CALLBACK
_status(NPP npp, const char *message);
void NP_CALLBACK
_memfree (void *ptr);
uint32_t NP_CALLBACK
_memflush(uint32_t size);
void NP_CALLBACK
_reloadplugins(NPBool reloadPages);
void NP_CALLBACK
_invalidaterect(NPP npp, NPRect *invalidRect);
void NP_CALLBACK
_invalidateregion(NPP npp, NPRegion invalidRegion);
void NP_CALLBACK
_forceredraw(NPP npp);
const char* NP_CALLBACK
_useragent(NPP npp);
void* NP_CALLBACK
_memalloc (uint32_t size);
// Deprecated entry points for the old Java plugin.
void* NP_CALLBACK /* OJI type: JRIEnv* */
_getJavaEnv();
void* NP_CALLBACK /* OJI type: jref */
_getJavaPeer(NPP npp);
void NP_CALLBACK
_urlredirectresponse(NPP instance, void* notifyData, NPBool allow);
} /* namespace parent */
} /* namespace plugins */
} /* namespace mozilla */
const char *
PeekException();
void
PopException();
void
OnPluginDestroy(NPP instance);
void
OnShutdown();
/**
* within a lexical scope, locks and unlocks the mutex used to
* serialize modifications to plugin async callback state.
*/
struct NS_STACK_CLASS AsyncCallbackAutoLock
{
AsyncCallbackAutoLock();
~AsyncCallbackAutoLock();
};
class NPPStack
{
public:
static NPP Peek()
{
return sCurrentNPP;
}
protected:
static NPP sCurrentNPP;
};
// XXXjst: The NPPAutoPusher stack is a bit redundant now that
// PluginDestructionGuard exists, and could thus be replaced by code
// that uses the PluginDestructionGuard list of plugins on the
// stack. But they're not identical, and to minimize code changes
// we're keeping both for the moment, and making NPPAutoPusher inherit
// the PluginDestructionGuard class to avoid having to keep two
// separate objects on the stack since we always want a
// PluginDestructionGuard where we use an NPPAutoPusher.
class NPPAutoPusher : public NPPStack,
protected PluginDestructionGuard
{
public:
NPPAutoPusher(NPP npp)
: PluginDestructionGuard(npp),
mOldNPP(sCurrentNPP)
{
NS_ASSERTION(npp, "Uh, null npp passed to NPPAutoPusher!");
sCurrentNPP = npp;
}
~NPPAutoPusher()
{
sCurrentNPP = mOldNPP;
}
private:
NPP mOldNPP;
};
class NPPExceptionAutoHolder
{
public:
NPPExceptionAutoHolder();
~NPPExceptionAutoHolder();
protected:
char *mOldException;
};
#endif // nsNPAPIPlugin_h_