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| 1 // Copyright 2013 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_LOCAL_DISCOVERY_PRIVET_URL_FETCHER_H_ | |
| 6 #define CHROME_BROWSER_LOCAL_DISCOVERY_PRIVET_URL_FETCHER_H_ | |
| 7 | |
| 8 #include <string> | |
| 9 | |
| 10 #include "base/files/file_util.h" | |
| 11 #include "base/macros.h" | |
| 12 #include "base/memory/weak_ptr.h" | |
| 13 #include "base/values.h" | |
| 14 #include "net/url_request/url_fetcher.h" | |
| 15 #include "net/url_request/url_fetcher_delegate.h" | |
| 16 #include "net/url_request/url_request_context_getter.h" | |
| 17 #include "url/gurl.h" | |
| 18 | |
| 19 namespace base { | |
| 20 class FilePath; | |
| 21 } | |
| 22 | |
| 23 namespace local_discovery { | |
| 24 | |
| 25 // Privet-specific URLFetcher adapter. Currently supports only the subset | |
| 26 // of HTTP features required by Privet for GCP 1.5 | |
| 27 // (/privet/info and /privet/register). | |
| 28 class PrivetURLFetcher : public net::URLFetcherDelegate { | |
| 29 public: | |
| 30 enum ErrorType { | |
| 31 JSON_PARSE_ERROR, | |
| 32 REQUEST_CANCELED, | |
| 33 RESPONSE_CODE_ERROR, | |
| 34 TOKEN_ERROR, | |
| 35 UNKNOWN_ERROR, | |
| 36 }; | |
| 37 | |
| 38 typedef base::Callback<void(const std::string& /*token*/)> TokenCallback; | |
| 39 | |
| 40 class Delegate { | |
| 41 public: | |
| 42 virtual ~Delegate() {} | |
| 43 | |
| 44 // If you do not implement this method for PrivetV1 callers, you will always | |
| 45 // get a TOKEN_ERROR error when your token is invalid. | |
| 46 virtual void OnNeedPrivetToken( | |
| 47 PrivetURLFetcher* fetcher, | |
| 48 const TokenCallback& callback); | |
| 49 | |
| 50 virtual void OnError(PrivetURLFetcher* fetcher, ErrorType error) = 0; | |
| 51 virtual void OnParsedJson(PrivetURLFetcher* fetcher, | |
| 52 const base::DictionaryValue& value, | |
| 53 bool has_error) = 0; | |
| 54 | |
| 55 // If this method is returns true, the data will not be parsed as JSON, and | |
| 56 // |OnParsedJson| will not be called. Otherwise, |OnParsedJson| will be | |
| 57 // called. | |
| 58 virtual bool OnRawData(PrivetURLFetcher* fetcher, | |
| 59 bool response_is_file, | |
| 60 const std::string& data_string, | |
| 61 const base::FilePath& data_file); | |
| 62 }; | |
| 63 | |
| 64 PrivetURLFetcher( | |
| 65 const GURL& url, | |
| 66 net::URLFetcher::RequestType request_type, | |
| 67 const scoped_refptr<net::URLRequestContextGetter>& context_getter, | |
| 68 Delegate* delegate); | |
| 69 | |
| 70 ~PrivetURLFetcher() override; | |
| 71 | |
| 72 // net::URLFetcherDelegate methods. | |
| 73 void OnURLFetchComplete(const net::URLFetcher* source) override; | |
| 74 | |
| 75 static void SetTokenForHost(const std::string& host, | |
| 76 const std::string& token); | |
| 77 | |
| 78 static void ResetTokenMapForTests(); | |
| 79 | |
| 80 void SetMaxRetries(int max_retries); | |
| 81 | |
| 82 void DoNotRetryOnTransientError(); | |
| 83 | |
| 84 void SendEmptyPrivetToken(); | |
| 85 | |
| 86 // Set the contents of the Range header. |OnRawData| must return true if this | |
| 87 // is called. | |
| 88 void SetByteRange(int start, int end); | |
| 89 | |
| 90 // Save the response to a file. |OnRawData| must return true if this is | |
| 91 // called. | |
| 92 void SaveResponseToFile(); | |
| 93 | |
| 94 void Start(); | |
| 95 | |
| 96 void SetUploadData(const std::string& upload_content_type, | |
| 97 const std::string& upload_data); | |
| 98 | |
| 99 void SetUploadFilePath(const std::string& upload_content_type, | |
| 100 const base::FilePath& upload_file_path); | |
| 101 | |
| 102 const GURL& url() const { | |
| 103 return url_fetcher_ ? url_fetcher_->GetOriginalURL() : url_; | |
| 104 } | |
| 105 int response_code() const { | |
| 106 return url_fetcher_ ? url_fetcher_->GetResponseCode() : -1; | |
| 107 } | |
| 108 | |
| 109 private: | |
| 110 void OnURLFetchCompleteParseData(const net::URLFetcher* source); | |
| 111 bool OnURLFetchCompleteDoNotParseData(const net::URLFetcher* source); | |
| 112 | |
| 113 std::string GetHostString(); // Get string representing the host. | |
| 114 std::string GetPrivetAccessToken(); | |
| 115 void Try(); | |
| 116 void ScheduleRetry(int timeout_seconds); | |
| 117 bool PrivetErrorTransient(const std::string& error); | |
| 118 void RequestTokenRefresh(); | |
| 119 void RefreshToken(const std::string& token); | |
| 120 | |
| 121 const GURL url_; | |
| 122 net::URLFetcher::RequestType request_type_; | |
| 123 scoped_refptr<net::URLRequestContextGetter> context_getter_; | |
| 124 Delegate* delegate_; | |
| 125 | |
| 126 int max_retries_; | |
| 127 bool do_not_retry_on_transient_error_; | |
| 128 bool send_empty_privet_token_; | |
| 129 bool has_byte_range_; | |
| 130 bool make_response_file_; | |
| 131 | |
| 132 int byte_range_start_; | |
| 133 int byte_range_end_; | |
| 134 | |
| 135 int tries_; | |
| 136 std::string upload_data_; | |
| 137 std::string upload_content_type_; | |
| 138 base::FilePath upload_file_path_; | |
| 139 scoped_ptr<net::URLFetcher> url_fetcher_; | |
| 140 | |
| 141 base::WeakPtrFactory<PrivetURLFetcher> weak_factory_; | |
| 142 DISALLOW_COPY_AND_ASSIGN(PrivetURLFetcher); | |
| 143 }; | |
| 144 | |
| 145 } // namespace local_discovery | |
| 146 | |
| 147 #endif // CHROME_BROWSER_LOCAL_DISCOVERY_PRIVET_URL_FETCHER_H_ | |
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