i2pd/AddressBook.h

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#ifndef ADDRESS_BOOK_H__
#define ADDRESS_BOOK_H__
#include <string.h>
#include <string>
#include <map>
#include <vector>
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#include <iostream>
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#include <mutex>
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#include <memory>
#include <boost/asio.hpp>
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#include "Base.h"
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#include "util.h"
#include "Identity.h"
#include "Log.h"
namespace i2p
{
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namespace client
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{
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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
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inline std::string GetB32Address(const i2p::data::IdentHash& ident) { return ident.ToBase32().append(".b32.i2p"); }
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class AddressBookStorage // interface for storage
{
public:
virtual ~AddressBookStorage () {};
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virtual std::shared_ptr<const i2p::data::IdentityEx> GetAddress (const i2p::data::IdentHash& ident) const = 0;
virtual void AddAddress (std::shared_ptr<const i2p::data::IdentityEx> address) = 0;
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virtual void RemoveAddress (const i2p::data::IdentHash& ident) = 0;
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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;
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};
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class AddressBookSubscription;
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class AddressBook
{
public:
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AddressBook ();
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~AddressBook ();
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void Start ();
void Stop ();
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bool GetIdentHash (const std::string& address, i2p::data::IdentHash& ident);
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std::shared_ptr<const i2p::data::IdentityEx> GetAddress (const std::string& address);
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const i2p::data::IdentHash * FindAddress (const std::string& address);
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void InsertAddress (const std::string& address, const std::string& base64); // for jump service
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void InsertAddress (std::shared_ptr<const i2p::data::IdentityEx> address);
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void LoadHostsFromStream (std::istream& f);
void DownloadComplete (bool success);
//This method returns the ".b32.i2p" address
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std::string ToAddress(const i2p::data::IdentHash& ident) { return GetB32Address(ident); }
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std::string ToAddress(std::shared_ptr<const i2p::data::IdentityEx> ident) { return ToAddress(ident->GetIdentHash ()); }
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private:
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void StartSubscriptions ();
void StopSubscriptions ();
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AddressBookStorage * CreateStorage ();
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void LoadHosts ();
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void LoadSubscriptions ();
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void HandleSubscriptionsUpdateTimer (const boost::system::error_code& ecode);
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private:
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std::mutex m_AddressBookMutex;
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std::map<std::string, i2p::data::IdentHash> m_Addresses;
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AddressBookStorage * m_Storage;
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volatile bool m_IsLoaded, m_IsDownloading;
std::vector<AddressBookSubscription *> m_Subscriptions;
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AddressBookSubscription * m_DefaultSubscription; // in case if we don't know any addresses yet
boost::asio::deadline_timer * m_SubscriptionsUpdateTimer;
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};
class AddressBookSubscription
{
public:
AddressBookSubscription (AddressBook& book, const std::string& link);
void CheckSubscription ();
private:
void Request ();
private:
AddressBook& m_Book;
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std::string m_Link, m_Etag, m_LastModified;
};
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}
}
#endif