1// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5// TODO: Need mechanism to cleanup the static instance 6 7#ifndef CONTENT_CHILD_NPAPI_PLUGIN_HOST_H_ 8#define CONTENT_CHILD_NPAPI_PLUGIN_HOST_H_ 9 10#include <string> 11#include <vector> 12 13#include "base/memory/ref_counted.h" 14#include "third_party/npapi/bindings/npapi.h" 15#include "third_party/npapi/bindings/nphostapi.h" 16 17namespace content { 18 19// The Plugin Host implements the NPN_xxx functions for NPAPI plugins. 20// These are the functions exposed from the Plugin Host for use 21// by the Plugin. 22// 23// The PluginHost is managed as a singleton. This isn't strictly 24// necessary, but since the callback functions are all global C 25// functions, there is really no point in having per-instance PluginHosts. 26class PluginHost : public base::RefCounted<PluginHost> { 27 public: 28 // Access the single PluginHost instance. Callers 29 // must call deref() when finished with the object. 30 static PluginHost* Singleton(); 31 32 // The table of functions provided to the plugin. 33 NPNetscapeFuncs* host_functions() { return &host_funcs_; } 34 35 // Helper function for parsing post headers, and applying attributes 36 // to the stream. NPAPI post data include headers + data combined. 37 // This function parses it out and adds it to the stream in a WebKit 38 // style. 39 static bool SetPostData(const char *buf, 40 uint32 length, 41 std::vector<std::string>* names, 42 std::vector<std::string>* values, 43 std::vector<char>* body); 44 45 void PatchNPNetscapeFuncs(NPNetscapeFuncs* overrides); 46 47 private: 48 friend class base::RefCounted<PluginHost>; 49 50 virtual ~PluginHost(); 51 52 PluginHost(); 53 void InitializeHostFuncs(); 54 NPNetscapeFuncs host_funcs_; 55 DISALLOW_COPY_AND_ASSIGN(PluginHost); 56}; 57 58} // namespace content 59 60#endif // CONTENT_CHILD_NPAPI_PLUGIN_HOST_H_ 61