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| 1 // Copyright 2017 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 #include "extensions/common/api/declarative_net_request/rules_indexer_util.h" |
| 6 |
| 7 #include <utility> |
| 8 |
| 9 #include <base/debug/stack_trace.h> |
| 10 #include "base/files/file_path.h" |
| 11 #include "base/files/file_util.h" |
| 12 #include "base/json/json_file_value_serializer.h" |
| 13 #include "base/metrics/histogram_macros.h" |
| 14 #include "base/stl_util.h" |
| 15 #include "base/strings/stringprintf.h" |
| 16 #include "base/threading/thread_restrictions.h" |
| 17 #include "extensions/common/api/declarative_net_request.h" |
| 18 #include "extensions/common/api/declarative_net_request/indexed_rule.h" |
| 19 #include "extensions/common/api/declarative_net_request/ruleset_indexer.h" |
| 20 |
| 21 namespace extensions { |
| 22 namespace declarative_net_request { |
| 23 |
| 24 namespace { |
| 25 |
| 26 struct ParseInfo { |
| 27 ParseInfo(ParseResult parse_result, int index = -1) |
| 28 : result(parse_result), rule_index(index) {} |
| 29 |
| 30 ParseResult result; |
| 31 // A value of -1 denotes an empty |rule_index|. |
| 32 int rule_index; |
| 33 }; |
| 34 |
| 35 bool PersistRuleset(const base::FilePath& path, |
| 36 const RulesetIndexer::SerializedData& data) { |
| 37 return base::WriteFile(path, reinterpret_cast<const char*>(data.first), |
| 38 base::checked_cast<int>(data.second)) != -1; |
| 39 } |
| 40 |
| 41 // TODO use localized string? |
| 42 std::string GenerateErrorDescription(const ParseInfo& info) { |
| 43 std::string error; |
| 44 switch (info.result) { |
| 45 case ParseResult::SUCCESS: |
| 46 NOTREACHED(); |
| 47 break; |
| 48 case ParseResult::ERROR_LIST_NOT_PASSED: |
| 49 DCHECK_EQ(-1, info.rule_index); |
| 50 error = "The ruleset file does not contain a valid list"; |
| 51 break; |
| 52 case ParseResult::ERROR_DUPLICATE_IDS: |
| 53 DCHECK_EQ(-1, info.rule_index); |
| 54 error = "Rules with duplicate ids found."; |
| 55 break; |
| 56 case ParseResult::ERROR_RESOURCE_TYPE_DUPLICATED: |
| 57 DCHECK_GE(info.rule_index, 0); |
| 58 error = base::StringPrintf( |
| 59 "Rule at index %d has duplicated resource type between %s and %s " |
| 60 "keys", |
| 61 info.rule_index, kResourceTypesKey, kExcludeResourceTypesKey); |
| 62 break; |
| 63 case ParseResult::ERROR_PERSISTING_RULESET: |
| 64 DCHECK_EQ(-1, info.rule_index); |
| 65 error = "The rules file could not be persisted"; |
| 66 break; |
| 67 // case ParseResult::ERROR_EMPTY_RULE_ID: |
| 68 // DCHECK_GE(info.rule_index, 0); |
| 69 // error = base::StringPrintf( |
| 70 // "Rule at index %d does not have a valid value for %s key", |
| 71 // info.rule_index, kRuleIDKey); |
| 72 // break; |
| 73 case ParseResult::ERROR_EMPTY_REDIRECT_RULE_PRIORITY: |
| 74 DCHECK_GE(info.rule_index, 0); |
| 75 error = base::StringPrintf( |
| 76 "Rule at index %d does not have a valid value for %s key. This is " |
| 77 "required for redirect rules", |
| 78 info.rule_index, kRulePriorityKey); |
| 79 break; |
| 80 case ParseResult::ERROR_EMPTY_REDIRECT_URL: |
| 81 DCHECK_GE(info.rule_index, 0); |
| 82 error = base::StringPrintf( |
| 83 "Rule at index %d does not have a valid value for %s.%s key. This is " |
| 84 "required for redirect rules", |
| 85 info.rule_index, kRuleActionKey, kRedirectUrlKey); |
| 86 break; |
| 87 case ParseResult::ERROR_INVALID_RULE_ID: |
| 88 DCHECK_GE(info.rule_index, 0); |
| 89 error = base::StringPrintf( |
| 90 "Rule at index %d has an invalid value for %s key. This should be " |
| 91 "greater than or equal to %d", |
| 92 info.rule_index, kRuleIDKey, kMinValidID); |
| 93 break; |
| 94 case ParseResult::ERROR_INVALID_REDIRECT_RULE_PRIORITY: |
| 95 DCHECK_GE(info.rule_index, 0); |
| 96 error = base::StringPrintf( |
| 97 "Rule at index %d has an invalid value for %s key. This should be " |
| 98 "greater than or equal to %d", |
| 99 info.rule_index, kRulePriorityKey, kMinValidPriority); |
| 100 break; |
| 101 case ParseResult::ERROR_JSON_PARSE: |
| 102 DCHECK_GE(info.rule_index, 0); |
| 103 error = base::StringPrintf("Rule at index %d could not be parsed.", |
| 104 info.rule_index); |
| 105 break; |
| 106 } |
| 107 return base::StringPrintf("%s: %s", kAPIName, error.c_str()); |
| 108 } |
| 109 |
| 110 ParseInfo IndexAndPersistRuleset(const base::Value& rules, |
| 111 const base::FilePath& indexed_ruleset_path) { |
| 112 base::ThreadRestrictions::AssertIOAllowed(); |
| 113 |
| 114 const base::ListValue* rules_list = nullptr; |
| 115 if (!rules.GetAsList(&rules_list)) |
| 116 return ParseInfo(ParseResult::ERROR_LIST_NOT_PASSED); |
| 117 |
| 118 RulesetIndexer indexer; |
| 119 std::set<int> id_set; // Ensure all ids are distinct. |
| 120 base::TimeTicks start_json_to_flatbuffer = base::TimeTicks::Now(); |
| 121 base::TimeDelta create_parsed_rule; |
| 122 base::TimeDelta add_to_flatbuffer; |
| 123 base::TimeDelta create_indexed_rule; |
| 124 std::unique_ptr<Rule> parsed_rule; |
| 125 for (auto iter = rules_list->begin(); iter != rules_list->end(); iter++) { |
| 126 const size_t index = iter - rules_list->begin(); |
| 127 |
| 128 ParseResult parse_result = ParseResult::SUCCESS; |
| 129 { |
| 130 base::TimeTicks start = base::TimeTicks::Now(); |
| 131 parsed_rule = Rule::FromValue(*iter); |
| 132 if (!parsed_rule) |
| 133 parse_result = ParseResult::ERROR_JSON_PARSE; |
| 134 create_parsed_rule += base::TimeTicks::Now() - start; |
| 135 } |
| 136 |
| 137 if (parse_result != ParseResult::SUCCESS) |
| 138 return ParseInfo(parse_result, index); |
| 139 |
| 140 if (base::ContainsKey(id_set, parsed_rule->id)) |
| 141 return ParseInfo(ParseResult::ERROR_DUPLICATE_IDS, index); |
| 142 |
| 143 IndexedRule indexed_rule; |
| 144 { |
| 145 base::TimeTicks start = base::TimeTicks::Now(); |
| 146 parse_result = CreateIndexedRule(std::move(parsed_rule), &indexed_rule); |
| 147 create_indexed_rule += base::TimeTicks::Now() - start; |
| 148 } |
| 149 |
| 150 if (parse_result != ParseResult::SUCCESS) |
| 151 return ParseInfo(parse_result, index); |
| 152 |
| 153 { |
| 154 base::TimeTicks start = base::TimeTicks::Now(); |
| 155 indexer.AddUrlRule(indexed_rule); |
| 156 add_to_flatbuffer += base::TimeTicks::Now() - start; |
| 157 } |
| 158 } |
| 159 |
| 160 LOG(ERROR) << "--------create_parsed_rule " << create_parsed_rule << "\n"; |
| 161 LOG(ERROR) << "--------create_indexed_rule " << create_indexed_rule << "\n"; |
| 162 LOG(ERROR) << "--------add_to_flatbuffer " << add_to_flatbuffer << "\n"; |
| 163 base::TimeDelta end_json_to_flatbuffer = |
| 164 base::TimeTicks::Now() - start_json_to_flatbuffer; |
| 165 LOG(ERROR) << "--------end_json_to_flatbuffer " << end_json_to_flatbuffer |
| 166 << "\n"; |
| 167 |
| 168 // The actual data buffer is still owned by |indexer|. |
| 169 RulesetIndexer::SerializedData data = indexer.FinishAndGetData(); |
| 170 |
| 171 base::TimeTicks start_persist = base::TimeTicks::Now(); |
| 172 if (!PersistRuleset(indexed_ruleset_path, data)) |
| 173 return ParseInfo(ParseResult::ERROR_PERSISTING_RULESET); |
| 174 base::TimeDelta end_persist = base::TimeTicks::Now() - start_persist; |
| 175 LOG(ERROR) << "--------end_persist " << end_persist << "\n"; |
| 176 |
| 177 return ParseInfo(ParseResult::SUCCESS); |
| 178 } |
| 179 |
| 180 } // namespace |
| 181 |
| 182 bool IndexAndPersistRuleset(const base::FilePath& json_rules_path, |
| 183 const base::FilePath& indexed_ruleset_path, |
| 184 std::string* error) { |
| 185 base::TimeTicks start_index_and_persist = base::TimeTicks::Now(); |
| 186 base::ThreadRestrictions::AssertIOAllowed(); |
| 187 |
| 188 base::TimeTicks start_deserialization = base::TimeTicks::Now(); |
| 189 JSONFileValueDeserializer deserializer(json_rules_path); |
| 190 std::unique_ptr<base::Value> rules = deserializer.Deserialize(nullptr, error); |
| 191 if (!rules) |
| 192 return false; // |error| will be populated by the call to Deserialize. |
| 193 base::TimeDelta deserialize_time = |
| 194 base::TimeTicks::Now() - start_deserialization; |
| 195 LOG(ERROR) << "--------deserialize_time " << deserialize_time << "\n"; |
| 196 UMA_HISTOGRAM_TIMES("DNR.JSONDeserializeTime", deserialize_time); |
| 197 |
| 198 const ParseInfo info = IndexAndPersistRuleset(*rules, indexed_ruleset_path); |
| 199 |
| 200 base::TimeDelta index_and_persist_time = |
| 201 base::TimeTicks::Now() - start_index_and_persist; |
| 202 LOG(ERROR) << "--------index_and_persist_time " << index_and_persist_time |
| 203 << "\n"; |
| 204 UMA_HISTOGRAM_TIMES("DNR.IndexAndPersistRuleset", index_and_persist_time); |
| 205 if (info.result != ParseResult::SUCCESS) { |
| 206 if (error) |
| 207 *error = GenerateErrorDescription(info); |
| 208 return false; |
| 209 } |
| 210 return true; |
| 211 } |
| 212 |
| 213 } // namespace declarative_net_request |
| 214 } // namespace extensions |
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