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 17 namespace 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. 26 class 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
