i2pd/AddressBook.h

#ifndef ADDRESS_BOOK_H__
#define ADDRESS_BOOK_H__

#include <string.h>
#include <string>
#include <map>
#include "base64.h"
#include "util.h"
#include "Identity.h"
#include "Log.h"

namespace i2p
{
namespace data
{
	class AddressBook
	{
		public:

			AddressBook (): m_IsLoaded (false) {};
	
			const IdentHash * FindAddress (const std::string& address)
			{
				if (!m_IsLoaded)
					LoadHosts ();
				auto it = m_Addresses.find (address);
				if (it != m_Addresses.end ())
					return &it->second;
				else
					return nullptr;	
			}
		
		private:
	
			void LoadHosts ()
			{
				m_IsLoaded = true;
				std::ifstream f (i2p::util::filesystem::GetFullPath ("hosts.txt").c_str (), std::ofstream::in); // in text mode
				if (!f.is_open ())	
				{
					LogPrint ("hosts.txt not found");
					return;
				}
				int numAddresses = 0;
				char str[1024];
				while (!f.eof ())
				{
					f.getline (str, 1024);
					char * key = strchr (str, '=');
					if (key)
					{
						*key = 0;
						key++;
						Identity ident;
						Base64ToByteStream (key, strlen(key), (uint8_t *)&ident, sizeof (ident));
						m_Addresses[str] = CalculateIdentHash (ident);	
						numAddresses++;
					}		
				}
				LogPrint (numAddresses, " addresses loaded");
			}

		private:

			std::map<std::string, IdentHash>  m_Addresses;
			bool m_IsLoaded;
	};
}
}

#endif