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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_COMMON_CHROME_PLUGIN_UTIL_H_
#define CHROME_COMMON_CHROME_PLUGIN_UTIL_H_
#include <string>
#include "base/basictypes.h"
#include "base/non_thread_safe.h"
#include "base/ref_counted.h"
#include "chrome/common/chrome_plugin_api.h"
#include "chrome/common/notification_registrar.h"
class ChromePluginLib;
class MessageLoop;
namespace net {
class HttpResponseHeaders;
}
// A helper struct to ensure the CPRequest data is cleaned up when done.
// This class is reused for requests made by the browser (and intercepted by the
// plugin) as well as those made by the plugin.
struct ScopableCPRequest : public CPRequest {
template<class T>
static T GetData(CPRequest* request) {
return static_cast<T>(static_cast<ScopableCPRequest*>(request)->data);
}
ScopableCPRequest(const char* url, const char* method,
CPBrowsingContext context);
~ScopableCPRequest();
void* data;
};
// This is a base class for plugin-related objects that need to go away when
// the plugin unloads. This object also verifies that it is created and
// destroyed on the same thread.
class PluginHelper : public NotificationObserver, public NonThreadSafe {
public:
static void DestroyAllHelpersForPlugin(ChromePluginLib* plugin);
explicit PluginHelper(ChromePluginLib* plugin);
virtual ~PluginHelper();
// NotificationObserver
virtual void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details);
protected:
NotificationRegistrar registrar_;
scoped_refptr<ChromePluginLib> plugin_;
DISALLOW_COPY_AND_ASSIGN(PluginHelper);
};
// A class of utility functions for dealing with request responses.
class PluginResponseUtils {
public:
// Helper to convert request load flags from the plugin API to the net API
// versions.
static uint32 CPLoadFlagsToNetFlags(uint32 flags);
// Common implementation of a CPR_GetResponseInfo call.
static int GetResponseInfo(
const net::HttpResponseHeaders* response_headers,
CPResponseInfoType type, void* buf, size_t buf_size);
};
// Helper to allocate a string using the given CPB_Alloc function.
inline char* CPB_StringDup(CPB_AllocFunc alloc, const std::string& str) {
char* cstr = static_cast<char*>(alloc(static_cast<uint32>(str.length() + 1)));
memcpy(cstr, str.c_str(), str.length() + 1); // Include null terminator.
return cstr;
}
CPError CPB_GetCommandLineArgumentsCommon(const char* url,
std::string* arguments);
void* STDCALL CPB_Alloc(uint32 size);
void STDCALL CPB_Free(void* memory);
#endif // CHROME_COMMON_CHROME_PLUGIN_UTIL_H_
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