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Side by Side Diff: net/base/sdch_manager.h

Issue 642403002: git cl format the first third of the net/base directory (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Nit Created 6 years, 1 month ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef NET_BASE_SDCH_MANAGER_H_ 5 #ifndef NET_BASE_SDCH_MANAGER_H_
6 #define NET_BASE_SDCH_MANAGER_H_ 6 #define NET_BASE_SDCH_MANAGER_H_
7 7
8 #include <map> 8 #include <map>
9 #include <set> 9 #include <set>
10 #include <string> 10 #include <string>
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73 DICTIONARY_DOMAIN_NOT_MATCHING_SOURCE_URL = 24, 73 DICTIONARY_DOMAIN_NOT_MATCHING_SOURCE_URL = 24,
74 DICTIONARY_PORT_NOT_MATCHING_SOURCE_URL = 25, 74 DICTIONARY_PORT_NOT_MATCHING_SOURCE_URL = 25,
75 DICTIONARY_HAS_NO_TEXT = 26, 75 DICTIONARY_HAS_NO_TEXT = 26,
76 DICTIONARY_REFERER_URL_HAS_DOT_IN_PREFIX = 27, 76 DICTIONARY_REFERER_URL_HAS_DOT_IN_PREFIX = 27,
77 77
78 // Dictionary loading problems. 78 // Dictionary loading problems.
79 DICTIONARY_LOAD_ATTEMPT_FROM_DIFFERENT_HOST = 30, 79 DICTIONARY_LOAD_ATTEMPT_FROM_DIFFERENT_HOST = 30,
80 DICTIONARY_SELECTED_FOR_SSL = 31, 80 DICTIONARY_SELECTED_FOR_SSL = 31,
81 DICTIONARY_ALREADY_LOADED = 32, 81 DICTIONARY_ALREADY_LOADED = 32,
82 DICTIONARY_SELECTED_FROM_NON_HTTP = 33, 82 DICTIONARY_SELECTED_FROM_NON_HTTP = 33,
83 DICTIONARY_IS_TOO_LARGE= 34, 83 DICTIONARY_IS_TOO_LARGE = 34,
84 DICTIONARY_COUNT_EXCEEDED = 35, 84 DICTIONARY_COUNT_EXCEEDED = 35,
85 DICTIONARY_ALREADY_SCHEDULED_TO_DOWNLOAD = 36, 85 DICTIONARY_ALREADY_SCHEDULED_TO_DOWNLOAD = 36,
86 DICTIONARY_ALREADY_TRIED_TO_DOWNLOAD = 37, 86 DICTIONARY_ALREADY_TRIED_TO_DOWNLOAD = 37,
87 DICTIONARY_FETCH_READ_FAILED = 38, 87 DICTIONARY_FETCH_READ_FAILED = 38,
88 88
89 // Failsafe hack. 89 // Failsafe hack.
90 ATTEMPT_TO_DECODE_NON_HTTP_DATA = 40, 90 ATTEMPT_TO_DECODE_NON_HTTP_DATA = 40,
91 91
92
93 // Content-Encoding problems detected, with no action taken. 92 // Content-Encoding problems detected, with no action taken.
94 MULTIENCODING_FOR_NON_SDCH_REQUEST = 50, 93 MULTIENCODING_FOR_NON_SDCH_REQUEST = 50,
95 SDCH_CONTENT_ENCODE_FOR_NON_SDCH_REQUEST = 51, 94 SDCH_CONTENT_ENCODE_FOR_NON_SDCH_REQUEST = 51,
96 95
97 // Dictionary manager issues. 96 // Dictionary manager issues.
98 DOMAIN_BLACKLIST_INCLUDES_TARGET = 61, 97 DOMAIN_BLACKLIST_INCLUDES_TARGET = 61,
99 98
100 // Problematic decode recovery methods. 99 // Problematic decode recovery methods.
101 META_REFRESH_RECOVERY = 70, // Dictionary not found. 100 META_REFRESH_RECOVERY = 70, // Dictionary not found.
102 // defunct = 71, // Almost the same as META_REFRESH_UNSUPPORTED. 101 // defunct = 71, // Almost the same as META_REFRESH_UNSUPPORTED.
103 // defunct = 72, // Almost the same as CACHED_META_REFRESH_UNSUPPORTED. 102 // defunct = 72, // Almost the same as CACHED_META_REFRESH_UNSUPPORTED.
104 // defunct = 73, // PASSING_THROUGH_NON_SDCH plus 103 // defunct = 73, // PASSING_THROUGH_NON_SDCH plus
105 // RESPONSE_TENTATIVE_SDCH in ../filter/sdch_filter.cc. 104 // RESPONSE_TENTATIVE_SDCH in ../filter/sdch_filter.cc.
106 META_REFRESH_UNSUPPORTED = 74, // Unrecoverable error. 105 META_REFRESH_UNSUPPORTED = 74, // Unrecoverable error.
107 CACHED_META_REFRESH_UNSUPPORTED = 75, // As above, but pulled from cache. 106 CACHED_META_REFRESH_UNSUPPORTED = 75, // As above, but pulled from cache.
108 PASSING_THROUGH_NON_SDCH = 76, // Tagged sdch but missing dictionary-hash. 107 PASSING_THROUGH_NON_SDCH = 76, // Tagged sdch but missing dictionary-hash.
109 INCOMPLETE_SDCH_CONTENT = 77, // Last window was not completely decoded. 108 INCOMPLETE_SDCH_CONTENT = 77, // Last window was not completely decoded.
110 PASS_THROUGH_404_CODE = 78, // URL not found message passing through. 109 PASS_THROUGH_404_CODE = 78, // URL not found message passing through.
111 110
112 // This next report is very common, and not really an error scenario, but 111 // This next report is very common, and not really an error scenario, but
113 // it exercises the error recovery logic. 112 // it exercises the error recovery logic.
114 PASS_THROUGH_OLD_CACHED = 79, // Back button got pre-SDCH cached content. 113 PASS_THROUGH_OLD_CACHED = 79, // Back button got pre-SDCH cached content.
115 114
116 // Common decoded recovery methods. 115 // Common decoded recovery methods.
117 META_REFRESH_CACHED_RECOVERY = 80, // Probably startup tab loading. 116 META_REFRESH_CACHED_RECOVERY = 80, // Probably startup tab loading.
118 // defunct = 81, // Now tracked by ResponseCorruptionDetectionCause histo. 117 // defunct = 81, // Now tracked by ResponseCorruptionDetectionCause histo.
119 118
120 // Non SDCH problems, only accounted for to make stat counting complete 119 // Non SDCH problems, only accounted for to make stat counting complete
121 // (i.e., be able to be sure all dictionary advertisements are accounted 120 // (i.e., be able to be sure all dictionary advertisements are accounted
122 // for). 121 // for).
123 122
124 UNFLUSHED_CONTENT = 90, // Possible error in filter chaining. 123 UNFLUSHED_CONTENT = 90, // Possible error in filter chaining.
125 // defunct = 91, // MISSING_TIME_STATS (Should never happen.) 124 // defunct = 91, // MISSING_TIME_STATS (Should never happen.)
126 CACHE_DECODED = 92, // No timing stats recorded. 125 CACHE_DECODED = 92, // No timing stats recorded.
127 // defunct = 93, // OVER_10_MINUTES (No timing stats recorded.) 126 // defunct = 93, // OVER_10_MINUTES (No timing stats recorded.)
128 UNINITIALIZED = 94, // Filter never even got initialized. 127 UNINITIALIZED = 94, // Filter never even got initialized.
129 PRIOR_TO_DICTIONARY = 95, // We hadn't even parsed a dictionary selector. 128 PRIOR_TO_DICTIONARY = 95, // We hadn't even parsed a dictionary selector.
130 DECODE_ERROR = 96, // Something went wrong during decode. 129 DECODE_ERROR = 96, // Something went wrong during decode.
131 130
132 // Problem during the latency test. 131 // Problem during the latency test.
133 LATENCY_TEST_DISALLOWED = 100, // SDCH now failing, but it worked before! 132 LATENCY_TEST_DISALLOWED = 100, // SDCH now failing, but it worked before!
134 133
135 MAX_PROBLEM_CODE // Used to bound histogram. 134 MAX_PROBLEM_CODE // Used to bound histogram.
136 }; 135 };
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167 166
168 const GURL& url() const { return url_; } 167 const GURL& url() const { return url_; }
169 const std::string& client_hash() const { return client_hash_; } 168 const std::string& client_hash() const { return client_hash_; }
170 169
171 // Security method to check if we can advertise this dictionary for use 170 // Security method to check if we can advertise this dictionary for use
172 // if the |target_url| returns SDCH compressed data. 171 // if the |target_url| returns SDCH compressed data.
173 bool CanAdvertise(const GURL& target_url); 172 bool CanAdvertise(const GURL& target_url);
174 173
175 // Security methods to check if we can establish a new dictionary with the 174 // Security methods to check if we can establish a new dictionary with the
176 // given data, that arrived in response to get of dictionary_url. 175 // given data, that arrived in response to get of dictionary_url.
177 static bool CanSet(const std::string& domain, const std::string& path, 176 static bool CanSet(const std::string& domain,
178 const std::set<int>& ports, const GURL& dictionary_url); 177 const std::string& path,
178 const std::set<int>& ports,
179 const GURL& dictionary_url);
179 180
180 // Security method to check if we can use a dictionary to decompress a 181 // Security method to check if we can use a dictionary to decompress a
181 // target that arrived with a reference to this dictionary. 182 // target that arrived with a reference to this dictionary.
182 bool CanUse(const GURL& referring_url); 183 bool CanUse(const GURL& referring_url);
183 184
184 // Compare paths to see if they "match" for dictionary use. 185 // Compare paths to see if they "match" for dictionary use.
185 static bool PathMatch(const std::string& path, 186 static bool PathMatch(const std::string& path,
186 const std::string& restriction); 187 const std::string& restriction);
187 188
188 // Compare domains to see if the "match" for dictionary use. 189 // Compare domains to see if the "match" for dictionary use.
189 static bool DomainMatch(const GURL& url, const std::string& restriction); 190 static bool DomainMatch(const GURL& url, const std::string& restriction);
190 191
191
192 // The actual text of the dictionary. 192 // The actual text of the dictionary.
193 std::string text_; 193 std::string text_;
194 194
195 // Part of the hash of text_ that the client uses to advertise the fact that 195 // Part of the hash of text_ that the client uses to advertise the fact that
196 // it has a specific dictionary pre-cached. 196 // it has a specific dictionary pre-cached.
197 std::string client_hash_; 197 std::string client_hash_;
198 198
199 // The GURL that arrived with the text_ in a URL request to specify where 199 // The GURL that arrived with the text_ in a URL request to specify where
200 // this dictionary may be used. 200 // this dictionary may be used.
201 const GURL url_; 201 const GURL url_;
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278 278
279 // Get list of available (pre-cached) dictionaries that we have already loaded 279 // Get list of available (pre-cached) dictionaries that we have already loaded
280 // into memory. The list is a comma separated list of (client) hashes per 280 // into memory. The list is a comma separated list of (client) hashes per
281 // the SDCH spec. 281 // the SDCH spec.
282 void GetAvailDictionaryList(const GURL& target_url, std::string* list); 282 void GetAvailDictionaryList(const GURL& target_url, std::string* list);
283 283
284 // Construct the pair of hashes for client and server to identify an SDCH 284 // Construct the pair of hashes for client and server to identify an SDCH
285 // dictionary. This is only made public to facilitate unit testing, but is 285 // dictionary. This is only made public to facilitate unit testing, but is
286 // otherwise private 286 // otherwise private
287 static void GenerateHash(const std::string& dictionary_text, 287 static void GenerateHash(const std::string& dictionary_text,
288 std::string* client_hash, std::string* server_hash); 288 std::string* client_hash,
289 std::string* server_hash);
289 290
290 // For Latency testing only, we need to know if we've succeeded in doing a 291 // For Latency testing only, we need to know if we've succeeded in doing a
291 // round trip before starting our comparative tests. If ever we encounter 292 // round trip before starting our comparative tests. If ever we encounter
292 // problems with SDCH, we opt-out of the test unless/until we perform a 293 // problems with SDCH, we opt-out of the test unless/until we perform a
293 // complete SDCH decoding. 294 // complete SDCH decoding.
294 bool AllowLatencyExperiment(const GURL& url) const; 295 bool AllowLatencyExperiment(const GURL& url) const;
295 296
296 void SetAllowLatencyExperiment(const GURL& url, bool enable); 297 void SetAllowLatencyExperiment(const GURL& url, bool enable);
297 298
298 // Add an SDCH dictionary to our list of availible 299 // Add an SDCH dictionary to our list of availible
299 // dictionaries. This addition will fail if addition is illegal 300 // dictionaries. This addition will fail if addition is illegal
300 // (data in the dictionary is not acceptable from the 301 // (data in the dictionary is not acceptable from the
301 // dictionary_url; dictionary already added, etc.). 302 // dictionary_url; dictionary already added, etc.).
302 void AddSdchDictionary(const std::string& dictionary_text, 303 void AddSdchDictionary(const std::string& dictionary_text,
303 const GURL& dictionary_url); 304 const GURL& dictionary_url);
304 305
305 // Registration for events generated by the SDCH subsystem. 306 // Registration for events generated by the SDCH subsystem.
306 void AddObserver(SdchObserver* observer); 307 void AddObserver(SdchObserver* observer);
307 void RemoveObserver(SdchObserver* observer); 308 void RemoveObserver(SdchObserver* observer);
308 309
309 private: 310 private:
310 struct BlacklistInfo { 311 struct BlacklistInfo {
311 BlacklistInfo() 312 BlacklistInfo()
312 : count(0), 313 : count(0), exponential_count(0), reason(MIN_PROBLEM_CODE) {}
313 exponential_count(0),
314 reason(MIN_PROBLEM_CODE) {}
315 314
316 int count; // # of times to refuse SDCH advertisement. 315 int count; // # of times to refuse SDCH advertisement.
317 int exponential_count; // Current exponential backoff ratchet. 316 int exponential_count; // Current exponential backoff ratchet.
318 ProblemCodes reason; // Why domain was blacklisted. 317 ProblemCodes reason; // Why domain was blacklisted.
319
320 }; 318 };
321 typedef std::map<std::string, BlacklistInfo> DomainBlacklistInfo; 319 typedef std::map<std::string, BlacklistInfo> DomainBlacklistInfo;
322 typedef std::set<std::string> ExperimentSet; 320 typedef std::set<std::string> ExperimentSet;
323 321
324 // Determines whether a "Get-Dictionary" header is legal (dictionary 322 // Determines whether a "Get-Dictionary" header is legal (dictionary
325 // url has appropriate relationship to referrer url) in the SDCH 323 // url has appropriate relationship to referrer url) in the SDCH
326 // protocol. Return true if fetch is legal. 324 // protocol. Return true if fetch is legal.
327 bool CanFetchDictionary(const GURL& referring_url, 325 bool CanFetchDictionary(const GURL& referring_url,
328 const GURL& dictionary_url) const; 326 const GURL& dictionary_url) const;
329 327
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356 ObserverList<SdchObserver, true> observers_; 354 ObserverList<SdchObserver, true> observers_;
357 355
358 base::ThreadChecker thread_checker_; 356 base::ThreadChecker thread_checker_;
359 357
360 DISALLOW_COPY_AND_ASSIGN(SdchManager); 358 DISALLOW_COPY_AND_ASSIGN(SdchManager);
361 }; 359 };
362 360
363 } // namespace net 361 } // namespace net
364 362
365 #endif // NET_BASE_SDCH_MANAGER_H_ 363 #endif // NET_BASE_SDCH_MANAGER_H_
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