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// Copyright 2008, Google Inc.
// 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 Google Inc. 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.
#ifndef CHROME_COMMON_CHROME_PLUGIN_UTIL_H__
#define CHROME_COMMON_CHROME_PLUGIN_UTIL_H__
#include "base/basictypes.h"
#include "base/ref_counted.h"
#include "chrome/common/chrome_plugin_api.h"
#include "chrome/common/notification_service.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:
static void DestroyAllHelpersForPlugin(ChromePluginLib* plugin);
PluginHelper(ChromePluginLib* plugin);
virtual ~PluginHelper();
// NotificationObserver
virtual void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details);
protected:
scoped_refptr<ChromePluginLib> plugin_;
#ifndef NDEBUG
// We keep track of the message loop of the thread we were created on, so
// we can verify that all other methods are called on the same thread.
MessageLoop* message_loop_;
#endif
DISALLOW_EVIL_CONSTRUCTORS(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, uint32 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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