mirror of
https://github.com/PurpleI2P/i2pd
synced 2024-11-10 08:00:38 +03:00
570 lines
16 KiB
C++
570 lines
16 KiB
C++
#include <string.h>
|
|
#include <inttypes.h>
|
|
#include <string>
|
|
#include <map>
|
|
#include <fstream>
|
|
#include <chrono>
|
|
#include <condition_variable>
|
|
#include <boost/filesystem.hpp>
|
|
#include <boost/lexical_cast.hpp>
|
|
#include <cryptopp/osrng.h>
|
|
#include "base64.h"
|
|
#include "util.h"
|
|
#include "Identity.h"
|
|
#include "Log.h"
|
|
#include "NetDb.h"
|
|
#include "ClientContext.h"
|
|
#include "AddressBook.h"
|
|
|
|
namespace i2p
|
|
{
|
|
namespace client
|
|
{
|
|
|
|
class AddressBookFilesystemStorage: public AddressBookStorage
|
|
{
|
|
public:
|
|
|
|
AddressBookFilesystemStorage ();
|
|
bool GetAddress (const i2p::data::IdentHash& ident, i2p::data::IdentityEx& address) const;
|
|
void AddAddress (const i2p::data::IdentityEx& address);
|
|
void RemoveAddress (const i2p::data::IdentHash& ident);
|
|
|
|
int Load (std::map<std::string, i2p::data::IdentHash>& addresses);
|
|
int Save (const std::map<std::string, i2p::data::IdentHash>& addresses);
|
|
|
|
private:
|
|
|
|
boost::filesystem::path GetPath () const { return i2p::util::filesystem::GetDefaultDataDir() / "addressbook"; };
|
|
|
|
};
|
|
|
|
AddressBookFilesystemStorage::AddressBookFilesystemStorage ()
|
|
{
|
|
auto path = GetPath ();
|
|
if (!boost::filesystem::exists (path))
|
|
{
|
|
// Create directory is necessary
|
|
if (!boost::filesystem::create_directory (path))
|
|
LogPrint (eLogError, "Failed to create addressbook directory");
|
|
}
|
|
}
|
|
|
|
bool AddressBookFilesystemStorage::GetAddress (const i2p::data::IdentHash& ident, i2p::data::IdentityEx& address) const
|
|
{
|
|
auto filename = GetPath () / (ident.ToBase32() + ".b32");
|
|
std::ifstream f(filename.c_str (), std::ifstream::binary);
|
|
if (f.is_open ())
|
|
{
|
|
f.seekg (0,std::ios::end);
|
|
size_t len = f.tellg ();
|
|
if (len < i2p::data::DEFAULT_IDENTITY_SIZE)
|
|
{
|
|
LogPrint (eLogError, "File ", filename, " is too short. ", len);
|
|
return false;
|
|
}
|
|
f.seekg(0, std::ios::beg);
|
|
uint8_t * buf = new uint8_t[len];
|
|
f.read((char *)buf, len);
|
|
address.FromBuffer (buf, len);
|
|
delete[] buf;
|
|
return true;
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
void AddressBookFilesystemStorage::AddAddress (const i2p::data::IdentityEx& address)
|
|
{
|
|
auto filename = GetPath () / (address.GetIdentHash ().ToBase32() + ".b32");
|
|
std::ofstream f (filename.c_str (), std::ofstream::binary | std::ofstream::out);
|
|
if (f.is_open ())
|
|
{
|
|
size_t len = address.GetFullLen ();
|
|
uint8_t * buf = new uint8_t[len];
|
|
address.ToBuffer (buf, len);
|
|
f.write ((char *)buf, len);
|
|
delete[] buf;
|
|
}
|
|
else
|
|
LogPrint (eLogError, "Can't open file ", filename);
|
|
}
|
|
|
|
void AddressBookFilesystemStorage::RemoveAddress (const i2p::data::IdentHash& ident)
|
|
{
|
|
auto filename = GetPath () / (ident.ToBase32() + ".b32");
|
|
if (boost::filesystem::exists (filename))
|
|
boost::filesystem::remove (filename);
|
|
}
|
|
|
|
int AddressBookFilesystemStorage::Load (std::map<std::string, i2p::data::IdentHash>& addresses)
|
|
{
|
|
int num = 0;
|
|
auto filename = GetPath () / "addresses.csv";
|
|
std::ifstream f (filename.c_str (), std::ofstream::in); // in text mode
|
|
if (f.is_open ())
|
|
{
|
|
addresses.clear ();
|
|
while (!f.eof ())
|
|
{
|
|
std::string s;
|
|
getline(f, s);
|
|
if (!s.length())
|
|
continue; // skip empty line
|
|
|
|
size_t pos = s.find(',');
|
|
if (pos != std::string::npos)
|
|
{
|
|
std::string name = s.substr(0, pos++);
|
|
std::string addr = s.substr(pos);
|
|
|
|
i2p::data::IdentHash ident;
|
|
ident.FromBase32 (addr);
|
|
addresses[name] = ident;
|
|
num++;
|
|
}
|
|
}
|
|
LogPrint (eLogInfo, num, " addresses loaded");
|
|
}
|
|
else
|
|
LogPrint (eLogWarning, filename, " not found");
|
|
return num;
|
|
}
|
|
|
|
int AddressBookFilesystemStorage::Save (const std::map<std::string, i2p::data::IdentHash>& addresses)
|
|
{
|
|
int num = 0;
|
|
auto filename = GetPath () / "addresses.csv";
|
|
std::ofstream f (filename.c_str (), std::ofstream::out); // in text mode
|
|
if (f.is_open ())
|
|
{
|
|
for (auto it: addresses)
|
|
{
|
|
f << it.first << "," << it.second.ToBase32 () << std::endl;
|
|
num++;
|
|
}
|
|
LogPrint (eLogInfo, num, " addresses saved");
|
|
}
|
|
else
|
|
LogPrint (eLogError, "Can't open file ", filename);
|
|
return num;
|
|
}
|
|
|
|
//---------------------------------------------------------------------
|
|
AddressBook::AddressBook (): m_Storage (nullptr), m_IsLoaded (false), m_IsDownloading (false),
|
|
m_DefaultSubscription (nullptr), m_SubscriptionsUpdateTimer (nullptr)
|
|
{
|
|
}
|
|
|
|
AddressBook::~AddressBook ()
|
|
{
|
|
Stop ();
|
|
}
|
|
|
|
void AddressBook::Start ()
|
|
{
|
|
StartSubscriptions ();
|
|
}
|
|
|
|
void AddressBook::Stop ()
|
|
{
|
|
StopSubscriptions ();
|
|
if (m_SubscriptionsUpdateTimer)
|
|
{
|
|
delete m_SubscriptionsUpdateTimer;
|
|
m_SubscriptionsUpdateTimer = nullptr;
|
|
}
|
|
if (m_IsDownloading)
|
|
{
|
|
LogPrint (eLogInfo, "Subscription is downloading. Waiting for temination...");
|
|
for (int i = 0; i < 30; i++)
|
|
{
|
|
if (!m_IsDownloading)
|
|
{
|
|
LogPrint (eLogInfo, "Subscription download complete");
|
|
break;
|
|
}
|
|
std::this_thread::sleep_for (std::chrono::seconds (1)); // wait for 1 seconds
|
|
}
|
|
LogPrint (eLogError, "Subscription download hangs");
|
|
m_IsDownloading = false;
|
|
}
|
|
if (m_Storage)
|
|
{
|
|
m_Storage->Save (m_Addresses);
|
|
delete m_Storage;
|
|
m_Storage = nullptr;
|
|
}
|
|
if (m_DefaultSubscription)
|
|
{
|
|
delete m_DefaultSubscription;
|
|
m_DefaultSubscription = nullptr;
|
|
}
|
|
for (auto it: m_Subscriptions)
|
|
delete it;
|
|
m_Subscriptions.clear ();
|
|
}
|
|
|
|
AddressBookStorage * AddressBook::CreateStorage ()
|
|
{
|
|
return new AddressBookFilesystemStorage ();
|
|
}
|
|
|
|
bool AddressBook::GetIdentHash (const std::string& address, i2p::data::IdentHash& ident)
|
|
{
|
|
auto pos = address.find(".b32.i2p");
|
|
if (pos != std::string::npos)
|
|
{
|
|
Base32ToByteStream (address.c_str(), pos, ident, 32);
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
pos = address.find (".i2p");
|
|
if (pos != std::string::npos)
|
|
{
|
|
auto identHash = FindAddress (address);
|
|
if (identHash)
|
|
{
|
|
ident = *identHash;
|
|
return true;
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
}
|
|
// if not .b32 we assume full base64 address
|
|
i2p::data::IdentityEx dest;
|
|
if (!dest.FromBase64 (address))
|
|
return false;
|
|
ident = dest.GetIdentHash ();
|
|
return true;
|
|
}
|
|
|
|
const i2p::data::IdentHash * AddressBook::FindAddress (const std::string& address)
|
|
{
|
|
if (!m_IsLoaded)
|
|
LoadHosts ();
|
|
if (m_IsLoaded)
|
|
{
|
|
auto it = m_Addresses.find (address);
|
|
if (it != m_Addresses.end ())
|
|
return &it->second;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void AddressBook::InsertAddress (const std::string& address, const std::string& base64)
|
|
{
|
|
i2p::data::IdentityEx ident;
|
|
ident.FromBase64 (base64);
|
|
if (!m_Storage)
|
|
m_Storage = CreateStorage ();
|
|
m_Storage->AddAddress (ident);
|
|
m_Addresses[address] = ident.GetIdentHash ();
|
|
LogPrint (address,"->", ToAddress(ident.GetIdentHash ()), " added");
|
|
}
|
|
|
|
void AddressBook::InsertAddress (const i2p::data::IdentityEx& address)
|
|
{
|
|
if (!m_Storage)
|
|
m_Storage = CreateStorage ();
|
|
m_Storage->AddAddress (address);
|
|
}
|
|
|
|
bool AddressBook::GetAddress (const std::string& address, i2p::data::IdentityEx& identity)
|
|
{
|
|
if (!m_Storage)
|
|
m_Storage = CreateStorage ();
|
|
i2p::data::IdentHash ident;
|
|
if (!GetIdentHash (address, ident)) return false;
|
|
return m_Storage->GetAddress (ident, identity);
|
|
}
|
|
|
|
void AddressBook::LoadHosts ()
|
|
{
|
|
if (!m_Storage)
|
|
m_Storage = CreateStorage ();
|
|
if (m_Storage->Load (m_Addresses) > 0)
|
|
{
|
|
m_IsLoaded = true;
|
|
return;
|
|
}
|
|
|
|
// try hosts.txt first
|
|
std::ifstream f (i2p::util::filesystem::GetFullPath ("hosts.txt").c_str (), std::ofstream::in); // in text mode
|
|
if (f.is_open ())
|
|
{
|
|
LoadHostsFromStream (f);
|
|
m_IsLoaded = true;
|
|
}
|
|
else
|
|
{
|
|
// if not found download it from http://i2p-projekt.i2p/hosts.txt
|
|
LogPrint (eLogInfo, "hosts.txt not found. Try to download it from default subscription...");
|
|
if (!m_IsDownloading)
|
|
{
|
|
m_IsDownloading = true;
|
|
if (!m_DefaultSubscription)
|
|
m_DefaultSubscription = new AddressBookSubscription (*this, DEFAULT_SUBSCRIPTION_ADDRESS);
|
|
m_DefaultSubscription->CheckSubscription ();
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
void AddressBook::LoadHostsFromStream (std::istream& f)
|
|
{
|
|
std::unique_lock<std::mutex> l(m_AddressBookMutex);
|
|
int numAddresses = 0;
|
|
std::string s;
|
|
while (!f.eof ())
|
|
{
|
|
getline(f, s);
|
|
|
|
if (!s.length())
|
|
continue; // skip empty line
|
|
|
|
size_t pos = s.find('=');
|
|
|
|
if (pos != std::string::npos)
|
|
{
|
|
std::string name = s.substr(0, pos++);
|
|
std::string addr = s.substr(pos);
|
|
|
|
i2p::data::IdentityEx ident;
|
|
if (ident.FromBase64(addr))
|
|
{
|
|
m_Addresses[name] = ident.GetIdentHash ();
|
|
m_Storage->AddAddress (ident);
|
|
numAddresses++;
|
|
}
|
|
else
|
|
LogPrint (eLogError, "Malformed address ", addr, " for ", name);
|
|
}
|
|
}
|
|
LogPrint (eLogInfo, numAddresses, " addresses processed");
|
|
if (numAddresses > 0)
|
|
{
|
|
m_IsLoaded = true;
|
|
m_Storage->Save (m_Addresses);
|
|
}
|
|
}
|
|
|
|
void AddressBook::LoadSubscriptions ()
|
|
{
|
|
if (!m_Subscriptions.size ())
|
|
{
|
|
std::ifstream f (i2p::util::filesystem::GetFullPath ("subscriptions.txt").c_str (), std::ofstream::in); // in text mode
|
|
if (f.is_open ())
|
|
{
|
|
std::string s;
|
|
while (!f.eof ())
|
|
{
|
|
getline(f, s);
|
|
if (!s.length()) continue; // skip empty line
|
|
m_Subscriptions.push_back (new AddressBookSubscription (*this, s));
|
|
}
|
|
LogPrint (eLogInfo, m_Subscriptions.size (), " subscriptions loaded");
|
|
}
|
|
else
|
|
LogPrint (eLogWarning, "subscriptions.txt not found");
|
|
}
|
|
else
|
|
LogPrint (eLogError, "Subscriptions already loaded");
|
|
}
|
|
|
|
void AddressBook::DownloadComplete (bool success)
|
|
{
|
|
m_IsDownloading = false;
|
|
if (m_SubscriptionsUpdateTimer)
|
|
{
|
|
m_SubscriptionsUpdateTimer->expires_from_now (boost::posix_time::minutes(
|
|
success ? CONTINIOUS_SUBSCRIPTION_UPDATE_TIMEOUT : CONTINIOUS_SUBSCRIPTION_RETRY_TIMEOUT));
|
|
m_SubscriptionsUpdateTimer->async_wait (std::bind (&AddressBook::HandleSubscriptionsUpdateTimer,
|
|
this, std::placeholders::_1));
|
|
}
|
|
}
|
|
|
|
void AddressBook::StartSubscriptions ()
|
|
{
|
|
LoadSubscriptions ();
|
|
if (!m_Subscriptions.size ()) return;
|
|
|
|
auto dest = i2p::client::context.GetSharedLocalDestination ();
|
|
if (dest)
|
|
{
|
|
m_SubscriptionsUpdateTimer = new boost::asio::deadline_timer (dest->GetService ());
|
|
m_SubscriptionsUpdateTimer->expires_from_now (boost::posix_time::minutes(INITIAL_SUBSCRIPTION_UPDATE_TIMEOUT));
|
|
m_SubscriptionsUpdateTimer->async_wait (std::bind (&AddressBook::HandleSubscriptionsUpdateTimer,
|
|
this, std::placeholders::_1));
|
|
}
|
|
else
|
|
LogPrint (eLogError, "Can't start subscriptions: missing shared local destination");
|
|
}
|
|
|
|
void AddressBook::StopSubscriptions ()
|
|
{
|
|
if (m_SubscriptionsUpdateTimer)
|
|
m_SubscriptionsUpdateTimer->cancel ();
|
|
}
|
|
|
|
void AddressBook::HandleSubscriptionsUpdateTimer (const boost::system::error_code& ecode)
|
|
{
|
|
if (ecode != boost::asio::error::operation_aborted)
|
|
{
|
|
auto dest = i2p::client::context.GetSharedLocalDestination ();
|
|
if (!dest) return;
|
|
if (m_IsLoaded && !m_IsDownloading && dest->IsReady ())
|
|
{
|
|
// pick random subscription
|
|
CryptoPP::AutoSeededRandomPool rnd;
|
|
auto ind = rnd.GenerateWord32 (0, m_Subscriptions.size() - 1);
|
|
m_IsDownloading = true;
|
|
m_Subscriptions[ind]->CheckSubscription ();
|
|
}
|
|
else
|
|
{
|
|
if (!m_IsLoaded)
|
|
LoadHosts ();
|
|
// try it again later
|
|
m_SubscriptionsUpdateTimer->expires_from_now (boost::posix_time::minutes(INITIAL_SUBSCRIPTION_RETRY_TIMEOUT));
|
|
m_SubscriptionsUpdateTimer->async_wait (std::bind (&AddressBook::HandleSubscriptionsUpdateTimer,
|
|
this, std::placeholders::_1));
|
|
}
|
|
}
|
|
}
|
|
|
|
AddressBookSubscription::AddressBookSubscription (AddressBook& book, const std::string& link):
|
|
m_Book (book), m_Link (link)
|
|
{
|
|
}
|
|
|
|
void AddressBookSubscription::CheckSubscription ()
|
|
{
|
|
std::thread load_hosts(&AddressBookSubscription::Request, this);
|
|
load_hosts.detach(); // TODO: use join
|
|
}
|
|
|
|
void AddressBookSubscription::Request ()
|
|
{
|
|
// must be run in separate thread
|
|
LogPrint (eLogInfo, "Downloading hosts from ", m_Link, " ETag: ", m_Etag, " Last-Modified: ", m_LastModified);
|
|
bool success = false;
|
|
i2p::util::http::url u (m_Link);
|
|
i2p::data::IdentHash ident;
|
|
if (m_Book.GetIdentHash (u.host_, ident))
|
|
{
|
|
std::condition_variable newDataReceived;
|
|
std::mutex newDataReceivedMutex;
|
|
auto leaseSet = i2p::client::context.GetSharedLocalDestination ()->FindLeaseSet (ident);
|
|
if (!leaseSet)
|
|
{
|
|
std::unique_lock<std::mutex> l(newDataReceivedMutex);
|
|
i2p::client::context.GetSharedLocalDestination ()->RequestDestination (ident,
|
|
[&newDataReceived, &leaseSet](std::shared_ptr<i2p::data::LeaseSet> ls)
|
|
{
|
|
leaseSet = ls;
|
|
newDataReceived.notify_all ();
|
|
});
|
|
if (newDataReceived.wait_for (l, std::chrono::seconds (SUBSCRIPTION_REQUEST_TIMEOUT)) == std::cv_status::timeout)
|
|
LogPrint (eLogError, "Subscription LeseseSet request timeout expired");
|
|
}
|
|
if (leaseSet)
|
|
{
|
|
std::stringstream request, response;
|
|
// standard header
|
|
request << "GET " << u.path_ << " HTTP/1.1\r\nHost: " << u.host_
|
|
<< "\r\nAccept: */*\r\n" << "User-Agent: Wget/1.11.4\r\n" << "Connection: close\r\n";
|
|
if (m_Etag.length () > 0) // etag
|
|
request << i2p::util::http::IF_NONE_MATCH << ": \"" << m_Etag << "\"\r\n";
|
|
if (m_LastModified.length () > 0) // if-modfief-since
|
|
request << i2p::util::http::IF_MODIFIED_SINCE << ": " << m_LastModified << "\r\n";
|
|
request << "\r\n"; // end of header
|
|
auto stream = i2p::client::context.GetSharedLocalDestination ()->CreateStream (leaseSet, u.port_);
|
|
stream->Send ((uint8_t *)request.str ().c_str (), request.str ().length ());
|
|
|
|
uint8_t buf[4096];
|
|
bool end = false;
|
|
while (!end)
|
|
{
|
|
stream->AsyncReceive (boost::asio::buffer (buf, 4096),
|
|
[&](const boost::system::error_code& ecode, std::size_t bytes_transferred)
|
|
{
|
|
if (bytes_transferred)
|
|
response.write ((char *)buf, bytes_transferred);
|
|
if (ecode == boost::asio::error::timed_out || !stream->IsOpen ())
|
|
end = true;
|
|
newDataReceived.notify_all ();
|
|
},
|
|
30); // wait for 30 seconds
|
|
std::unique_lock<std::mutex> l(newDataReceivedMutex);
|
|
if (newDataReceived.wait_for (l, std::chrono::seconds (SUBSCRIPTION_REQUEST_TIMEOUT)) == std::cv_status::timeout)
|
|
LogPrint (eLogError, "Subscription timeout expired");
|
|
}
|
|
// process remaining buffer
|
|
while (size_t len = stream->ReadSome (buf, 4096))
|
|
response.write ((char *)buf, len);
|
|
|
|
// parse response
|
|
std::string version;
|
|
response >> version; // HTTP version
|
|
int status = 0;
|
|
response >> status; // status
|
|
if (status == 200) // OK
|
|
{
|
|
bool isChunked = false;
|
|
std::string header, statusMessage;
|
|
std::getline (response, statusMessage);
|
|
// read until new line meaning end of header
|
|
while (!response.eof () && header != "\r")
|
|
{
|
|
std::getline (response, header);
|
|
auto colon = header.find (':');
|
|
if (colon != std::string::npos)
|
|
{
|
|
std::string field = header.substr (0, colon);
|
|
header.resize (header.length () - 1); // delete \r
|
|
if (field == i2p::util::http::ETAG)
|
|
m_Etag = header.substr (colon + 1);
|
|
else if (field == i2p::util::http::LAST_MODIFIED)
|
|
m_LastModified = header.substr (colon + 1);
|
|
else if (field == i2p::util::http::TRANSFER_ENCODING)
|
|
isChunked = !header.compare (colon + 1, std::string::npos, "chunked");
|
|
}
|
|
}
|
|
LogPrint (eLogInfo, m_Link, " ETag: ", m_Etag, " Last-Modified: ", m_LastModified);
|
|
if (!response.eof ())
|
|
{
|
|
success = true;
|
|
if (!isChunked)
|
|
m_Book.LoadHostsFromStream (response);
|
|
else
|
|
{
|
|
// merge chunks
|
|
std::stringstream merged;
|
|
i2p::util::http::MergeChunkedResponse (response, merged);
|
|
m_Book.LoadHostsFromStream (merged);
|
|
}
|
|
}
|
|
}
|
|
else if (status == 304)
|
|
{
|
|
success = true;
|
|
LogPrint (eLogInfo, "No updates from ", m_Link);
|
|
}
|
|
else
|
|
LogPrint (eLogWarning, "Adressbook HTTP response ", status);
|
|
}
|
|
else
|
|
LogPrint (eLogError, "Address ", u.host_, " not found");
|
|
}
|
|
else
|
|
LogPrint (eLogError, "Can't resolve ", u.host_);
|
|
LogPrint (eLogInfo, "Download complete ", success ? "Success" : "Failed");
|
|
m_Book.DownloadComplete (success);
|
|
}
|
|
}
|
|
}
|
|
|