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 CONTENT_BROWSER_MEDIA_WEBRTC_IDENTITY_STORE_BACKEND_H_ 6 #define CONTENT_BROWSER_MEDIA_WEBRTC_IDENTITY_STORE_BACKEND_H_ 7 8 #include <map> 9 #include <string> 10 11 #include "base/time/time.h" 12 #include "sql/connection.h" 13 #include "sql/meta_table.h" 14 15 class GURL; 16 17 namespace base { 18 class FilePath; 19 } // namespace base 20 21 namespace storage { 22 class SpecialStoragePolicy; 23 } // namespace storage 24 25 namespace content { 26 27 // This class represents a persistent cache of WebRTC identities. 28 // It can be created/destroyed/Close() on any thread. All other members should 29 // be accessed on the IO thread. 30 class WebRTCIdentityStoreBackend 31 : public base::RefCountedThreadSafe<WebRTCIdentityStoreBackend> { 32 public: 33 typedef base::Callback<void(int error, 34 const std::string& certificate, 35 const std::string& private_key)> 36 FindIdentityCallback; 37 38 // No data is saved on disk if |path| is empty. Identites older than 39 // |validity_period| will be removed lazily. 40 WebRTCIdentityStoreBackend(const base::FilePath& path, 41 storage::SpecialStoragePolicy* policy, 42 base::TimeDelta validity_period); 43 44 // Finds the identity with |origin|, |identity_name|, and |common_name| from 45 // the DB. 46 // |origin| is the origin of the identity; 47 // |identity_name| is used to identify an identity within an origin; 48 // |common_name| is the common name used to generate the certificate; 49 // |callback| is the callback to return the find result. 50 // Returns true if |callback| will be called. 51 // Should be called on the IO thread. 52 bool FindIdentity(const GURL& origin, 53 const std::string& identity_name, 54 const std::string& common_name, 55 const FindIdentityCallback& callback); 56 57 // Adds the identity to the DB and overwrites any existing identity having the 58 // same origin and identity_name. 59 // |origin| is the origin of the identity; 60 // |identity_name| is used to identify an identity within an origin; 61 // |common_name| is the common name used to generate the certificate; 62 // |certificate| is the DER string of the certificate; 63 // |private_key| is the DER string of the private key. 64 // Should be called on the IO thread. 65 void AddIdentity(const GURL& origin, 66 const std::string& identity_name, 67 const std::string& common_name, 68 const std::string& certificate, 69 const std::string& private_key); 70 71 // Commits all pending DB operations and closes the DB connection. Any API 72 // call after this will fail. 73 // Can be called on any thread. 74 void Close(); 75 76 // Delete the data created between |delete_begin| and |delete_end|. 77 // Should be called on the IO thread. 78 void DeleteBetween(base::Time delete_begin, 79 base::Time delete_end, 80 const base::Closure& callback); 81 82 // Changes the validity period. Should be called before the database is 83 // loaded into memory. 84 void SetValidityPeriodForTesting(base::TimeDelta validity_period); 85 86 private: 87 friend class base::RefCountedThreadSafe<WebRTCIdentityStoreBackend>; 88 class SqlLiteStorage; 89 enum LoadingState { 90 NOT_STARTED, 91 LOADING, 92 LOADED, 93 CLOSED, 94 }; 95 struct PendingFindRequest; 96 struct IdentityKey; 97 struct Identity; 98 typedef std::map<IdentityKey, Identity> IdentityMap; 99 100 ~WebRTCIdentityStoreBackend(); 101 102 void OnLoaded(scoped_ptr<IdentityMap> out_map); 103 104 105 // Identities expires after |validity_period_|. 106 base::TimeDelta validity_period_; 107 // In-memory copy of the identities. 108 IdentityMap identities_; 109 // "Find identity" requests waiting for the DB to load. 110 std::vector<PendingFindRequest*> pending_find_requests_; 111 // The persistent storage loading state. 112 LoadingState state_; 113 // The persistent storage of identities. 114 scoped_refptr<SqlLiteStorage> sql_lite_storage_; 115 116 DISALLOW_COPY_AND_ASSIGN(WebRTCIdentityStoreBackend); 117 }; 118 } 119 120 #endif // CONTENT_BROWSER_MEDIA_WEBRTC_IDENTITY_STORE_BACKEND_H_ 121