1 // 2 // Copyright (C) 2015 The Android Open Source Project 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 // 16 17 #ifndef SHILL_DHCP_PROPERTIES_H_ 18 #define SHILL_DHCP_PROPERTIES_H_ 19 20 #include <string> 21 22 #include <gtest/gtest_prod.h> // for FRIEND_TEST 23 24 #include "shill/accessor_interface.h" 25 #include "shill/key_value_store.h" 26 27 namespace shill { 28 29 class Error; 30 class PropertyStore; 31 class StoreInterface; 32 33 class DhcpProperties { 34 public: 35 static const char kHostnameProperty[]; 36 static const char kVendorClassProperty[]; 37 38 DhcpProperties(); 39 40 virtual ~DhcpProperties(); 41 42 // Adds property accessors to the DhcpProperty parameters in |this| 43 // to |store|. 44 void InitPropertyStore(PropertyStore* store); 45 46 // Loads DHCP properties from |storage| in group |id|. 47 virtual void Load(StoreInterface* store, const std::string& id); 48 49 // Saves DHCP properties to |storage| in group |id|. 50 virtual void Save(StoreInterface* store, const std::string& id) const; 51 52 // Combines two DHCP property objects and returns a 53 // std::unique_ptr<DhcpProperties>. The new DhcpProperties instance is the 54 // union of the key-value pairs in |base| and |to_merge|. For keys which 55 // exist in both |base| and |to_merge|, the value is taken from |to_merge|. 56 // EX: |base| stores {"VendorClass": "v1", "Hostname": "host1"} 57 // |to_merge| stores {"Hostname": "differentname"} 58 // returned DhcpProperties will store: 59 // {"VendorClass": "v1", "Hostname": "differentname"} 60 // EX: |base| stores {"Hostname": "host1"} 61 // |to_merge| stores {"Hostname": "differentname", "VendorClass": "vc"} 62 // returned DhcpProperties will store: 63 // {"Hostname": "differentname", "VendorClass": "vc"} 64 static std::unique_ptr<DhcpProperties> Combine( 65 const DhcpProperties& base, 66 const DhcpProperties& to_merge); 67 68 // Retrieves the value for a property with |name| in |value| if it is set. 69 // Returns true if the property was found. 70 bool GetValueForProperty(const std::string& name, std::string* value) const; 71 72 const KeyValueStore& properties() const { return properties_; }; 73 74 private: 75 FRIEND_TEST(DhcpPropertiesTest, ClearMappedStringPropertyNoExistingValue); 76 FRIEND_TEST(DhcpPropertiesTest, ClearMappedStringPropertyWithSetValue); 77 FRIEND_TEST(DhcpPropertiesTest, CombineIntoEmpty); 78 FRIEND_TEST(DhcpPropertiesTest, CombineEmptyIntoExisting); 79 FRIEND_TEST(DhcpPropertiesTest, CombineConflicting); 80 FRIEND_TEST(DhcpPropertiesTest, Ctor); 81 FRIEND_TEST(DhcpPropertiesTest, GetMappedStringPropertyNoExistingValue); 82 FRIEND_TEST(DhcpPropertiesTest, GetMappedStringPropertyWithSetValue); 83 FRIEND_TEST(DhcpPropertiesTest, GetValueForProperty); 84 FRIEND_TEST(DhcpPropertiesTest, Load); 85 FRIEND_TEST(DhcpPropertiesTest, LoadEmpty); 86 FRIEND_TEST(DhcpPropertiesTest, LoadWithValuesSetAndClearRequired); 87 FRIEND_TEST(DhcpPropertiesTest, SaveWithValuesSet); 88 FRIEND_TEST(DhcpPropertiesTest, SavePropertyNotSetShouldBeDeleted); 89 FRIEND_TEST(DhcpPropertiesTest, SetMappedStringPropertyNoExistingValue); 90 FRIEND_TEST(DhcpPropertiesTest, SetMappedStringPropertyOverrideExisting); 91 FRIEND_TEST(DhcpPropertiesTest, SetMappedStringPropertySameAsExistingValue); 92 93 void ClearMappedStringProperty(const size_t& index, Error* error); 94 std::string GetMappedStringProperty(const size_t& index, Error* error); 95 bool SetMappedStringProperty( 96 const size_t& index, const std::string& value, Error* error); 97 98 // KeyValueStore tracking values for DhcpProperties settings. 99 KeyValueStore properties_; 100 101 DISALLOW_COPY_AND_ASSIGN(DhcpProperties); 102 }; 103 104 } // namespace shill 105 106 #endif // SHILL_DHCP_PROPERTIES_H_ 107