1 // Copyright (c) 2012 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 #ifndef CHROME_BROWSER_SAFE_BROWSING_MALWARE_DETAILS_CACHE_H_ 6 #define CHROME_BROWSER_SAFE_BROWSING_MALWARE_DETAILS_CACHE_H_ 7 8 // A class that gets malware details from the HTTP Cache. 9 // An instance of this class is generated by MalwareDetails. 10 11 #include <string> 12 #include <vector> 13 14 #include "base/callback.h" 15 #include "base/containers/hash_tables.h" 16 #include "base/memory/linked_ptr.h" 17 #include "base/memory/ref_counted.h" 18 #include "chrome/browser/safe_browsing/report.pb.h" 19 #include "net/base/completion_callback.h" 20 #include "net/url_request/url_fetcher_delegate.h" 21 22 namespace net { 23 class URLFetcher; 24 class URLRequestContext; 25 } 26 27 namespace safe_browsing { 28 29 // Maps a URL to its Resource. 30 typedef base::hash_map< 31 std::string, 32 linked_ptr<safe_browsing::ClientMalwareReportRequest::Resource> > ResourceMap; 33 } 34 35 class MalwareDetailsCacheCollector 36 : public base::RefCountedThreadSafe<MalwareDetailsCacheCollector>, 37 public net::URLFetcherDelegate { 38 39 public: 40 MalwareDetailsCacheCollector(); 41 42 // We use |request_context_getter|, we modify |resources| and 43 // |result|, and we call |callback|, so they must all remain alive 44 // for the lifetime of this object. 45 void StartCacheCollection( 46 net::URLRequestContextGetter* request_context_getter, 47 safe_browsing::ResourceMap* resources, 48 bool* result, 49 const base::Closure& callback); 50 51 // Returns whether or not StartCacheCollection has been called. 52 bool HasStarted(); 53 54 protected: 55 // Implementation of URLFetcher::Delegate. Called after the request 56 // completes (either successfully or with failure). 57 virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE; 58 59 private: 60 friend class base::RefCountedThreadSafe<MalwareDetailsCacheCollector>; 61 62 virtual ~MalwareDetailsCacheCollector(); 63 64 // Points to the url for which we are fetching the HTTP cache entry or 65 // redirect chain. 66 safe_browsing::ResourceMap::iterator resources_it_; 67 68 // Points to the resources_ map in the MalwareDetails. 69 safe_browsing::ResourceMap* resources_; 70 71 // Points to the cache_result_ in the MalwareDetails. 72 bool* result_; 73 74 // Method we call when we are done. The caller must be alive for the 75 // whole time, we are modifying its state (see above). 76 base::Closure callback_; 77 78 // Set to true as soon as StartCacheCollection is called. 79 bool has_started_; 80 81 // Used to get a pointer to the current request context. 82 scoped_refptr<net::URLRequestContextGetter> request_context_getter_; 83 84 // The current URLFetcher. 85 scoped_ptr<net::URLFetcher> current_fetch_; 86 87 // Returns the resource from resources_ that corresponds to |url| 88 safe_browsing::ClientMalwareReportRequest::Resource* GetResource( 89 const GURL& url); 90 91 // Creates a new URLFetcher and starts it. 92 void OpenEntry(); 93 94 // Read the HTTP response from |source| and add it to |pb_resource|. 95 void ReadResponse( 96 safe_browsing::ClientMalwareReportRequest::Resource* pb_resource, 97 const net::URLFetcher* source); 98 99 // Read the body |data| and add it to |pb_resource|. 100 void ReadData( 101 safe_browsing::ClientMalwareReportRequest::Resource* pb_resource, 102 const std::string& data); 103 104 // Called when we are done. 105 void AllDone(bool success); 106 107 // Advances to the next entry in resources_it_. 108 void AdvanceEntry(); 109 }; 110 111 #endif // CHROME_BROWSER_SAFE_BROWSING_MALWARE_DETAILS_CACHE_H_ 112
