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1 // Copyright 2014 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 COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_DATABASE_H_ | |
6 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_DATABASE_H_ | |
7 | |
8 #include <memory> | |
9 | |
10 #include "base/macros.h" | |
11 #include "base/time/time.h" | |
12 #include "components/password_manager/core/browser/affiliation_utils.h" | |
13 | |
14 namespace base { | |
15 class FilePath; | |
16 } // namespace base | |
17 | |
18 namespace sql { | |
19 class Connection; | |
20 class Statement; | |
21 } // namespace sql | |
22 | |
23 namespace password_manager { | |
24 | |
25 // Stores equivalence classes of facets, i.e., facets that are affiliated with | |
26 // each other, in an SQLite database. See affiliation_utils.h for a more | |
27 // detailed definition of what this means. | |
28 // | |
29 // Under the assumption that there is most likely not much the caller can do in | |
30 // case of database errors, most methods silently ignore them. Nevertheless, the | |
31 // caller must plan ahead for this rare but non-negligible scenario, and expect | |
32 // that in odd cases basic database invariants will not hold. | |
33 class AffiliationDatabase { | |
34 public: | |
35 AffiliationDatabase(); | |
36 ~AffiliationDatabase(); | |
37 | |
38 // Opens an existing database at |path|, or creates a new one if none exists, | |
39 // and returns true on success. | |
40 bool Init(const base::FilePath& path); | |
41 | |
42 // Looks up the equivalence class containing |facet_uri|, and returns true if | |
43 // such a class is found, in which case it is also stored into |result|. | |
44 bool GetAffiliationsForFacet(const FacetURI& facet_uri, | |
45 AffiliatedFacetsWithUpdateTime* result) const; | |
46 | |
47 // Retrieves all stored equivalence classes. | |
48 void GetAllAffiliations( | |
49 std::vector<AffiliatedFacetsWithUpdateTime>* results) const; | |
50 | |
51 // Removes the stored equivalence class, if any, containing |facet_uri|. | |
52 void DeleteAffiliationsForFacet(const FacetURI& facet_uri); | |
53 | |
54 // Removes stored equivalence classes that were last updated before the | |
55 // |cutoff_threshold|. | |
56 void DeleteAffiliationsOlderThan(const base::Time& cutoff_threshold); | |
57 | |
58 // Removes all records from all tables of the database. | |
59 void DeleteAllAffiliations(); | |
60 | |
61 // Stores the equivalence class defined by |affiliated_facets| to the DB and | |
62 // returns true unless it has a non-empty subset with a preexisting class, in | |
63 // which case no changes are made and the function returns false. | |
64 bool Store(const AffiliatedFacetsWithUpdateTime& affiliated_facets); | |
65 | |
66 // Stores the equivalence class defined by |affiliated_facets| to the DB, | |
67 // database, and removes any other equivalence classes that are in conflict | |
68 // with |affiliated_facets|, i.e. those that are neither equal nor disjoint to | |
69 // it. Removed equivalence classes are stored into |removed_affiliations|. | |
70 void StoreAndRemoveConflicting( | |
71 const AffiliatedFacetsWithUpdateTime& affiliated_facets, | |
72 std::vector<AffiliatedFacetsWithUpdateTime>* removed_affiliations); | |
73 | |
74 // Deletes the database file at |path| along with all its auxiliary files. The | |
75 // database must be closed before calling this. | |
76 static void Delete(const base::FilePath& path); | |
77 | |
78 private: | |
79 // Creates any tables and indices that do not already exist in the database. | |
80 bool CreateTablesAndIndicesIfNeeded(); | |
81 | |
82 // Called when SQLite encounters an error. | |
83 void SQLErrorCallback(int error_number, sql::Statement* statement); | |
84 | |
85 // The SQL connection to the database. | |
86 std::unique_ptr<sql::Connection> sql_connection_; | |
87 | |
88 DISALLOW_COPY_AND_ASSIGN(AffiliationDatabase); | |
89 }; | |
90 | |
91 } // namespace password_manager | |
92 | |
93 #endif // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_DATABASE_H_ | |
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