15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This class is called by the WebResourceService in a sandboxed process 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// to unpack data retrieved from a web resource feed. Right now, it 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// takes a string of data in JSON format, parses it, and hands it back 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// to the WebResourceService as a list of items. In the future 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// it will be set up to unpack and verify image data in addition to 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// just parsing a JSON feed. 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 127dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#ifndef CHROME_UTILITY_WEB_RESOURCE_UNPACKER_H_ 137dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#define CHROME_UTILITY_WEB_RESOURCE_UNPACKER_H_ 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string> 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/scoped_ptr.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace base { 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class DictionaryValue; 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class WebResourceUnpacker { 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const char* kInvalidDataTypeError; 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const char* kUnexpectedJSONFormatError; 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit WebResourceUnpacker(const std::string &resource_data); 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~WebResourceUnpacker(); 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This does the actual parsing. In case of an error, error_message_ 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // is set to an appropriate value. 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool Run(); 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the last error message set by Run(). 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::string& error_message() { return error_message_; } 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Gets data which has been parsed by Run(). 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::DictionaryValue* parsed_json() { 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return parsed_json_.get(); 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Holds the string which is to be parsed. 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string resource_data_; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Holds the result of JSON parsing of resource_data_. 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<base::DictionaryValue> parsed_json_; 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Holds the last error message produced by Run(). 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string error_message_; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(WebResourceUnpacker); 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 577dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#endif // CHROME_UTILITY_WEB_RESOURCE_UNPACKER_H_ 58