Implement #243, separate core/client (PCH support dropped for now)

core/AddressBook.h

@@ -0,0 +1,110 @@
+#ifndef ADDRESS_BOOK_H__
+#define ADDRESS_BOOK_H__
+
+#include <string.h>
+#include <string>
+#include <map>
+#include <vector>
+#include <iostream>
+#include <mutex>
+#include <boost/asio.hpp>
+#include "util/base64.h"
+#include "util/util.h"
+#include "Identity.h"
+#include "util/Log.h"
+
+namespace i2p
+{
+namespace client
+{
+    const char DEFAULT_SUBSCRIPTION_ADDRESS[] = "http://udhdrtrcetjm5sxzskjyr5ztpeszydbh4dpl3pl4utgqqw2v4jna.b32.i2p/hosts.txt";
+    const int INITIAL_SUBSCRIPTION_UPDATE_TIMEOUT = 3; // in minutes    
+    const int INITIAL_SUBSCRIPTION_RETRY_TIMEOUT = 1; // in minutes         
+    const int CONTINIOUS_SUBSCRIPTION_UPDATE_TIMEOUT = 720; // in minutes (12 hours)            
+    const int CONTINIOUS_SUBSCRIPTION_RETRY_TIMEOUT = 5; // in minutes  
+    const int SUBSCRIPTION_REQUEST_TIMEOUT = 60; //in second
+    
+    inline std::string GetB32Address(const i2p::data::IdentHash& ident) { return ident.ToBase32().append(".b32.i2p"); }
+
+    class AddressBookStorage // interface for storage
+    {
+        public:
+
+            virtual ~AddressBookStorage () {};
+            virtual bool GetAddress (const i2p::data::IdentHash& ident, i2p::data::IdentityEx& address) const = 0;  
+            virtual void AddAddress (const i2p::data::IdentityEx& address) = 0;
+            virtual void RemoveAddress (const i2p::data::IdentHash& ident) = 0;
+        
+            virtual int Load (std::map<std::string, i2p::data::IdentHash>& addresses) = 0;
+            virtual int Save (const std::map<std::string, i2p::data::IdentHash>& addresses) = 0;
+    };          
+
+    class ClientDestination;
+    class AddressBookSubscription;
+    class AddressBook
+    {
+        public:
+
+            AddressBook ();
+            ~AddressBook ();
+            void Start (ClientDestination* local_destination);
+            void Stop ();
+            bool GetIdentHash (const std::string& address, i2p::data::IdentHash& ident);
+            bool GetAddress (const std::string& address, i2p::data::IdentityEx& identity);
+            const i2p::data::IdentHash * FindAddress (const std::string& address);
+
+            ClientDestination* getSharedLocalDestination() const;
+
+            void InsertAddress (const std::string& address, const std::string& base64); // for jump service
+            void InsertAddress (const i2p::data::IdentityEx& address);
+
+            void LoadHostsFromStream (std::istream& f);
+            void DownloadComplete (bool success);
+            //This method returns the ".b32.i2p" address
+            std::string ToAddress(const i2p::data::IdentHash& ident) { return GetB32Address(ident); }
+            std::string ToAddress(const i2p::data::IdentityEx& ident) { return ToAddress(ident.GetIdentHash ()); }
+        private:
+
+            void StartSubscriptions ();
+            void StopSubscriptions ();
+            
+            AddressBookStorage * CreateStorage ();  
+            void LoadHosts ();
+            void LoadSubscriptions ();
+
+            void HandleSubscriptionsUpdateTimer (const boost::system::error_code& ecode);
+
+        private:    
+
+            std::mutex m_AddressBookMutex;
+            std::map<std::string, i2p::data::IdentHash>  m_Addresses;
+            AddressBookStorage * m_Storage;
+            volatile bool m_IsLoaded, m_IsDownloading;
+            std::vector<AddressBookSubscription *> m_Subscriptions;
+            AddressBookSubscription * m_DefaultSubscription; // in case if we don't know any addresses yet
+            boost::asio::deadline_timer * m_SubscriptionsUpdateTimer;
+            ClientDestination* m_SharedLocalDestination;
+    };
+
+    class AddressBookSubscription
+    {
+        public:
+
+            AddressBookSubscription (AddressBook& book, const std::string& link);
+            void CheckSubscription ();
+
+        private:
+
+            void Request ();
+        
+        private:
+
+            AddressBook& m_Book;
+            std::string m_Link, m_Etag, m_LastModified;
+    };
+}
+}
+
+#endif
+
+