mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2024-10-31 09:20:38 +00:00
1116 lines
30 KiB
C++
1116 lines
30 KiB
C++
/*
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* Copyright (c) 2013-2021, The PurpleI2P Project
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*
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* This file is part of Purple i2pd project and licensed under BSD3
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*
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* See full license text in LICENSE file at top of project tree
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*/
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#include <stdio.h>
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#include <string.h>
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#include "I2PEndian.h"
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#include <fstream>
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#include <boost/lexical_cast.hpp>
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#include <boost/make_shared.hpp>
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#if (BOOST_VERSION >= 105300)
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#include <boost/atomic.hpp>
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#endif
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#include "version.h"
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#include "util.h"
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#include "Crypto.h"
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#include "Base.h"
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#include "Timestamp.h"
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#include "Log.h"
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#include "NetDb.hpp"
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#include "RouterContext.h"
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#include "RouterInfo.h"
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namespace i2p
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{
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namespace data
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{
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RouterInfo::RouterInfo (): m_Buffer (nullptr)
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{
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m_Addresses = boost::make_shared<Addresses>(); // create empty list
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}
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RouterInfo::RouterInfo (const std::string& fullPath):
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m_FullPath (fullPath), m_IsUpdated (false), m_IsUnreachable (false),
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m_SupportedTransports (0), m_Caps (0), m_Version (0)
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{
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m_Addresses = boost::make_shared<Addresses>(); // create empty list
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m_Buffer = new uint8_t[MAX_RI_BUFFER_SIZE];
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ReadFromFile ();
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}
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RouterInfo::RouterInfo (const uint8_t * buf, int len):
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m_IsUpdated (true), m_IsUnreachable (false), m_SupportedTransports (0),
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m_Caps (0), m_Version (0)
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{
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m_Addresses = boost::make_shared<Addresses>(); // create empty list
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if (len <= MAX_RI_BUFFER_SIZE)
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{
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m_Buffer = new uint8_t[MAX_RI_BUFFER_SIZE];
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memcpy (m_Buffer, buf, len);
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m_BufferLen = len;
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ReadFromBuffer (true);
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}
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else
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{
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LogPrint (eLogError, "RouterInfo: Buffer is too long ", len, ". Ignored");
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m_Buffer = nullptr;
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m_IsUnreachable = true;
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}
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}
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RouterInfo::~RouterInfo ()
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{
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delete[] m_Buffer;
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}
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void RouterInfo::Update (const uint8_t * buf, size_t len)
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{
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if (len > MAX_RI_BUFFER_SIZE)
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{
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LogPrint (eLogError, "RouterInfo: Buffer is too long ", len);
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m_IsUnreachable = true;
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return;
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}
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// verify signature since we have identity already
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int l = len - m_RouterIdentity->GetSignatureLen ();
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if (m_RouterIdentity->Verify (buf, l, buf + l))
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{
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// clean up
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m_IsUpdated = true;
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m_IsUnreachable = false;
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m_SupportedTransports = 0;
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m_Caps = 0;
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// don't clean up m_Addresses, it will be replaced in ReadFromStream
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m_Properties.clear ();
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// copy buffer
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if (!m_Buffer)
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m_Buffer = new uint8_t[MAX_RI_BUFFER_SIZE];
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memcpy (m_Buffer, buf, len);
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m_BufferLen = len;
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// skip identity
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size_t identityLen = m_RouterIdentity->GetFullLen ();
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// read new RI
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std::stringstream str (std::string ((char *)m_Buffer + identityLen, m_BufferLen - identityLen));
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ReadFromStream (str);
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// don't delete buffer until saved to the file
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}
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else
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{
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LogPrint (eLogError, "RouterInfo: signature verification failed");
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m_IsUnreachable = true;
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}
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}
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void RouterInfo::SetRouterIdentity (std::shared_ptr<const IdentityEx> identity)
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{
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m_RouterIdentity = identity;
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m_Timestamp = i2p::util::GetMillisecondsSinceEpoch ();
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}
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bool RouterInfo::LoadFile ()
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{
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std::ifstream s(m_FullPath, std::ifstream::binary);
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if (s.is_open ())
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{
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s.seekg (0,std::ios::end);
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m_BufferLen = s.tellg ();
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if (m_BufferLen < 40 || m_BufferLen > MAX_RI_BUFFER_SIZE)
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{
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LogPrint(eLogError, "RouterInfo: File", m_FullPath, " is malformed");
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return false;
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}
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s.seekg(0, std::ios::beg);
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if (!m_Buffer) m_Buffer = new uint8_t[MAX_RI_BUFFER_SIZE];
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s.read((char *)m_Buffer, m_BufferLen);
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}
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else
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{
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LogPrint (eLogError, "RouterInfo: Can't open file ", m_FullPath);
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return false;
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}
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return true;
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}
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void RouterInfo::ReadFromFile ()
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{
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if (LoadFile ())
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ReadFromBuffer (false);
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else
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m_IsUnreachable = true;
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}
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void RouterInfo::ReadFromBuffer (bool verifySignature)
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{
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m_RouterIdentity = std::make_shared<IdentityEx>(m_Buffer, m_BufferLen);
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size_t identityLen = m_RouterIdentity->GetFullLen ();
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if (identityLen >= m_BufferLen)
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{
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LogPrint (eLogError, "RouterInfo: identity length ", identityLen, " exceeds buffer size ", m_BufferLen);
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m_IsUnreachable = true;
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return;
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}
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if (verifySignature)
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{
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// reject RSA signatures
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if (m_RouterIdentity->IsRSA ())
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{
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LogPrint (eLogError, "RouterInfo: RSA signature type is not allowed");
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m_IsUnreachable = true;
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return;
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}
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// verify signature
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int l = m_BufferLen - m_RouterIdentity->GetSignatureLen ();
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if (l < 0 || !m_RouterIdentity->Verify ((uint8_t *)m_Buffer, l, (uint8_t *)m_Buffer + l))
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{
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LogPrint (eLogError, "RouterInfo: signature verification failed");
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m_IsUnreachable = true;
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return;
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}
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m_RouterIdentity->DropVerifier ();
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}
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// parse RI
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std::stringstream str;
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str.write ((const char *)m_Buffer + identityLen, m_BufferLen - identityLen);
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ReadFromStream (str);
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if (!str)
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{
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LogPrint (eLogError, "RouterInfo: malformed message");
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m_IsUnreachable = true;
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}
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}
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void RouterInfo::ReadFromStream (std::istream& s)
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{
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m_Caps = 0;
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s.read ((char *)&m_Timestamp, sizeof (m_Timestamp));
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m_Timestamp = be64toh (m_Timestamp);
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// read addresses
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auto addresses = boost::make_shared<Addresses>();
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uint8_t numAddresses;
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s.read ((char *)&numAddresses, sizeof (numAddresses)); if (!s) return;
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bool introducers = false;
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for (int i = 0; i < numAddresses; i++)
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{
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uint8_t supportedTransports = 0;
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auto address = std::make_shared<Address>();
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s.read ((char *)&address->cost, sizeof (address->cost));
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s.read ((char *)&address->date, sizeof (address->date));
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bool isHost = false, isIntroKey = false, isStaticKey = false;
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char transportStyle[6];
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ReadString (transportStyle, 6, s);
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if (!strncmp (transportStyle, "NTCP", 4)) // NTCP or NTCP2
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{
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address->transportStyle = eTransportNTCP;
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address->ntcp2.reset (new NTCP2Ext ());
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}
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else if (!strcmp (transportStyle, "SSU"))
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{
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address->transportStyle = eTransportSSU;
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address->ssu.reset (new SSUExt ());
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address->ssu->mtu = 0;
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}
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else
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address->transportStyle = eTransportUnknown;
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address->caps = 0;
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address->port = 0;
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uint16_t size, r = 0;
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s.read ((char *)&size, sizeof (size)); if (!s) return;
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size = be16toh (size);
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while (r < size)
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{
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char key[255], value[255];
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r += ReadString (key, 255, s);
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s.seekg (1, std::ios_base::cur); r++; // =
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r += ReadString (value, 255, s);
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s.seekg (1, std::ios_base::cur); r++; // ;
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if (!s) return;
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if (!strcmp (key, "host"))
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{
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boost::system::error_code ecode;
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address->host = boost::asio::ip::address::from_string (value, ecode);
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if (!ecode && !address->host.is_unspecified ()) isHost = true;
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}
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else if (!strcmp (key, "port"))
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address->port = boost::lexical_cast<int>(value);
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else if (!strcmp (key, "mtu"))
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{
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if (address->ssu)
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address->ssu->mtu = boost::lexical_cast<int>(value);
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else
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LogPrint (eLogWarning, "RouterInfo: Unexpected field 'mtu' for NTCP");
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}
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else if (!strcmp (key, "key"))
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{
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if (address->ssu)
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isIntroKey = (Base64ToByteStream (value, strlen (value), address->ssu->key, 32) == 32);
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else
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LogPrint (eLogWarning, "RouterInfo: Unexpected field 'key' for NTCP");
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}
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else if (!strcmp (key, "caps"))
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address->caps = ExtractAddressCaps (value);
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else if (!strcmp (key, "s")) // ntcp2 static key
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{
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Base64ToByteStream (value, strlen (value), address->ntcp2->staticKey, 32);
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isStaticKey = true;
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}
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else if (!strcmp (key, "i")) // ntcp2 iv
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{
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Base64ToByteStream (value, strlen (value), address->ntcp2->iv, 16);
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address->ntcp2->isPublished = true; // presence if "i" means "published"
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}
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else if (key[0] == 'i')
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{
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// introducers
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if (!address->ssu)
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{
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LogPrint (eLogError, "RouterInfo: Introducer is presented for non-SSU address. Skipped");
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continue;
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}
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introducers = true;
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size_t l = strlen(key);
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unsigned char index = key[l-1] - '0'; // TODO:
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key[l-1] = 0;
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if (index > 9)
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{
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LogPrint (eLogError, "RouterInfo: Unexpected introducer's index ", index, " skipped");
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if (s) continue; else return;
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}
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if (index >= address->ssu->introducers.size ())
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address->ssu->introducers.resize (index + 1);
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Introducer& introducer = address->ssu->introducers.at (index);
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if (!strcmp (key, "ihost"))
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{
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boost::system::error_code ecode;
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introducer.iHost = boost::asio::ip::address::from_string (value, ecode);
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}
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else if (!strcmp (key, "iport"))
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introducer.iPort = boost::lexical_cast<int>(value);
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else if (!strcmp (key, "itag"))
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introducer.iTag = boost::lexical_cast<uint32_t>(value);
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else if (!strcmp (key, "ikey"))
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Base64ToByteStream (value, strlen (value), introducer.iKey, 32);
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else if (!strcmp (key, "iexp"))
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introducer.iExp = boost::lexical_cast<uint32_t>(value);
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}
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if (!s) return;
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}
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if (address->transportStyle == eTransportNTCP)
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{
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if (isStaticKey)
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{
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if (isHost)
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{
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if (address->host.is_v6 ())
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supportedTransports |= i2p::util::net::IsYggdrasilAddress (address->host) ? eNTCP2V6Mesh : eNTCP2V6;
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else
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supportedTransports |= eNTCP2V4;
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}
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else if (!address->ntcp2->isPublished)
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{
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if (address->caps)
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{
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if (address->caps | AddressCaps::eV4) supportedTransports |= eNTCP2V4;
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if (address->caps | AddressCaps::eV6) supportedTransports |= eNTCP2V6;
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}
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else
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supportedTransports |= eNTCP2V4; // most likely, since we don't have host
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}
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}
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}
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else if (address->transportStyle == eTransportSSU)
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{
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if (isIntroKey)
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{
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if (isHost)
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supportedTransports |= address->host.is_v4 () ? eSSUV4 : eSSUV6;
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else
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if (introducers) supportedTransports |= eSSUV4; // in case if host is not presented
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}
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}
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if (supportedTransports)
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{
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addresses->push_back(address);
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m_SupportedTransports |= supportedTransports;
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}
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}
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#if (BOOST_VERSION >= 105300)
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boost::atomic_store (&m_Addresses, addresses);
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#else
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m_Addresses = addresses; // race condition
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#endif
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// read peers
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uint8_t numPeers;
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s.read ((char *)&numPeers, sizeof (numPeers)); if (!s) return;
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s.seekg (numPeers*32, std::ios_base::cur); // TODO: read peers
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// read properties
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uint16_t size, r = 0;
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s.read ((char *)&size, sizeof (size)); if (!s) return;
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size = be16toh (size);
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while (r < size)
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{
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char key[255], value[255];
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r += ReadString (key, 255, s);
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s.seekg (1, std::ios_base::cur); r++; // =
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r += ReadString (value, 255, s);
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s.seekg (1, std::ios_base::cur); r++; // ;
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if (!s) return;
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m_Properties[key] = value;
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// extract caps
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if (!strcmp (key, "caps"))
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ExtractCaps (value);
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// extract version
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else if (!strcmp (key, ROUTER_INFO_PROPERTY_VERSION))
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{
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m_Version = 0;
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char * ch = value;
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while (*ch)
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{
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if (*ch >= '0' && *ch <= '9')
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{
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m_Version *= 10;
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m_Version += (*ch - '0');
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}
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ch++;
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}
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}
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// check netId
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else if (!strcmp (key, ROUTER_INFO_PROPERTY_NETID) && atoi (value) != i2p::context.GetNetID ())
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{
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LogPrint (eLogError, "RouterInfo: Unexpected ", ROUTER_INFO_PROPERTY_NETID, "=", value);
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m_IsUnreachable = true;
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}
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// family
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else if (!strcmp (key, ROUTER_INFO_PROPERTY_FAMILY))
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{
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m_Family = value;
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boost::to_lower (m_Family);
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}
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else if (!strcmp (key, ROUTER_INFO_PROPERTY_FAMILY_SIG))
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{
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if (!netdb.GetFamilies ().VerifyFamily (m_Family, GetIdentHash (), value))
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{
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LogPrint (eLogWarning, "RouterInfo: family signature verification failed");
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m_Family.clear ();
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}
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}
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if (!s) return;
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}
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if (!m_SupportedTransports || !m_Addresses->size() || (UsesIntroducer () && !introducers))
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SetUnreachable (true);
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}
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bool RouterInfo::IsFamily(const std::string & fam) const
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{
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return m_Family == fam;
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}
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void RouterInfo::ExtractCaps (const char * value)
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{
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const char * cap = value;
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while (*cap)
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{
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switch (*cap)
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{
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case CAPS_FLAG_FLOODFILL:
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m_Caps |= Caps::eFloodfill;
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break;
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case CAPS_FLAG_HIGH_BANDWIDTH1:
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case CAPS_FLAG_HIGH_BANDWIDTH2:
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case CAPS_FLAG_HIGH_BANDWIDTH3:
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m_Caps |= Caps::eHighBandwidth;
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break;
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case CAPS_FLAG_EXTRA_BANDWIDTH1:
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case CAPS_FLAG_EXTRA_BANDWIDTH2:
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m_Caps |= Caps::eExtraBandwidth | Caps::eHighBandwidth;
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break;
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case CAPS_FLAG_HIDDEN:
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m_Caps |= Caps::eHidden;
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break;
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case CAPS_FLAG_REACHABLE:
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m_Caps |= Caps::eReachable;
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break;
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case CAPS_FLAG_UNREACHABLE:
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m_Caps |= Caps::eUnreachable;
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break;
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default: ;
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}
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cap++;
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}
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}
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uint8_t RouterInfo::ExtractAddressCaps (const char * value) const
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{
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uint8_t caps = 0;
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const char * cap = value;
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while (*cap)
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{
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switch (*cap)
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{
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case CAPS_FLAG_V4:
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caps |= AddressCaps::eV4;
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break;
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case CAPS_FLAG_V6:
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caps |= AddressCaps::eV6;
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break;
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case CAPS_FLAG_SSU_TESTING:
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caps |= AddressCaps::eSSUTesting;
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break;
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case CAPS_FLAG_SSU_INTRODUCER:
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caps |= AddressCaps::eSSUIntroducer;
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break;
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default: ;
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}
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cap++;
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}
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return caps;
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}
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void RouterInfo::UpdateCapsProperty ()
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{
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std::string caps;
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if (m_Caps & eFloodfill)
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{
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if (m_Caps & eExtraBandwidth) caps += (m_Caps & eHighBandwidth) ?
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CAPS_FLAG_EXTRA_BANDWIDTH2 : // 'X'
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CAPS_FLAG_EXTRA_BANDWIDTH1; // 'P'
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else
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caps += CAPS_FLAG_HIGH_BANDWIDTH3; // 'O'
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caps += CAPS_FLAG_FLOODFILL; // floodfill
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}
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else
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{
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if (m_Caps & eExtraBandwidth)
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caps += (m_Caps & eHighBandwidth) ? CAPS_FLAG_EXTRA_BANDWIDTH2 /* 'X' */ : CAPS_FLAG_EXTRA_BANDWIDTH1; /*'P' */
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else
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caps += (m_Caps & eHighBandwidth) ? CAPS_FLAG_HIGH_BANDWIDTH3 /* 'O' */: CAPS_FLAG_LOW_BANDWIDTH2 /* 'L' */; // bandwidth
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}
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if (m_Caps & eHidden) caps += CAPS_FLAG_HIDDEN; // hidden
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if (m_Caps & eReachable) caps += CAPS_FLAG_REACHABLE; // reachable
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if (m_Caps & eUnreachable) caps += CAPS_FLAG_UNREACHABLE; // unreachable
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|
|
|
SetProperty ("caps", caps);
|
|
}
|
|
|
|
void RouterInfo::WriteToStream (std::ostream& s) const
|
|
{
|
|
uint64_t ts = htobe64 (m_Timestamp);
|
|
s.write ((const char *)&ts, sizeof (ts));
|
|
|
|
// addresses
|
|
uint8_t numAddresses = m_Addresses->size ();
|
|
s.write ((char *)&numAddresses, sizeof (numAddresses));
|
|
for (const auto& addr_ptr : *m_Addresses)
|
|
{
|
|
const Address& address = *addr_ptr;
|
|
s.write ((const char *)&address.cost, sizeof (address.cost));
|
|
s.write ((const char *)&address.date, sizeof (address.date));
|
|
std::stringstream properties;
|
|
bool isPublished = false;
|
|
if (address.transportStyle == eTransportNTCP)
|
|
{
|
|
if (address.IsNTCP2 ())
|
|
{
|
|
WriteString ("NTCP2", s);
|
|
if (address.IsPublishedNTCP2 ())
|
|
isPublished = true;
|
|
else
|
|
{
|
|
WriteString ("caps", properties);
|
|
properties << '=';
|
|
std::string caps;
|
|
if (address.caps & AddressCaps::eV4) caps += CAPS_FLAG_V4;
|
|
if (address.caps & AddressCaps::eV6) caps += CAPS_FLAG_V6;
|
|
if (caps.empty ()) caps += CAPS_FLAG_V4;
|
|
WriteString (caps, properties);
|
|
properties << ';';
|
|
}
|
|
}
|
|
else
|
|
continue; // don't write NTCP address
|
|
}
|
|
else if (address.transportStyle == eTransportSSU)
|
|
{
|
|
WriteString ("SSU", s);
|
|
// caps
|
|
WriteString ("caps", properties);
|
|
properties << '=';
|
|
std::string caps;
|
|
if (address.IsPeerTesting ()) caps += CAPS_FLAG_SSU_TESTING;
|
|
if (address.IsIntroducer ()) caps += CAPS_FLAG_SSU_INTRODUCER;
|
|
if (IsReachable ())
|
|
isPublished = true;
|
|
else
|
|
caps += CAPS_FLAG_V4;
|
|
WriteString (caps, properties);
|
|
properties << ';';
|
|
}
|
|
else
|
|
WriteString ("", s);
|
|
|
|
if (isPublished)
|
|
{
|
|
WriteString ("host", properties);
|
|
properties << '=';
|
|
WriteString (address.host.to_string (), properties);
|
|
properties << ';';
|
|
}
|
|
if (address.transportStyle == eTransportSSU)
|
|
{
|
|
// write introducers if any
|
|
if (!address.ssu->introducers.empty())
|
|
{
|
|
int i = 0;
|
|
for (const auto& introducer: address.ssu->introducers)
|
|
{
|
|
WriteString ("ihost" + boost::lexical_cast<std::string>(i), properties);
|
|
properties << '=';
|
|
WriteString (introducer.iHost.to_string (), properties);
|
|
properties << ';';
|
|
i++;
|
|
}
|
|
i = 0;
|
|
for (const auto& introducer: address.ssu->introducers)
|
|
{
|
|
WriteString ("ikey" + boost::lexical_cast<std::string>(i), properties);
|
|
properties << '=';
|
|
char value[64];
|
|
size_t l = ByteStreamToBase64 (introducer.iKey, 32, value, 64);
|
|
value[l] = 0;
|
|
WriteString (value, properties);
|
|
properties << ';';
|
|
i++;
|
|
}
|
|
i = 0;
|
|
for (const auto& introducer: address.ssu->introducers)
|
|
{
|
|
WriteString ("iport" + boost::lexical_cast<std::string>(i), properties);
|
|
properties << '=';
|
|
WriteString (boost::lexical_cast<std::string>(introducer.iPort), properties);
|
|
properties << ';';
|
|
i++;
|
|
}
|
|
i = 0;
|
|
for (const auto& introducer: address.ssu->introducers)
|
|
{
|
|
WriteString ("itag" + boost::lexical_cast<std::string>(i), properties);
|
|
properties << '=';
|
|
WriteString (boost::lexical_cast<std::string>(introducer.iTag), properties);
|
|
properties << ';';
|
|
i++;
|
|
}
|
|
i = 0;
|
|
for (const auto& introducer: address.ssu->introducers)
|
|
{
|
|
if (introducer.iExp) // expiration is specified
|
|
{
|
|
WriteString ("iexp" + boost::lexical_cast<std::string>(i), properties);
|
|
properties << '=';
|
|
WriteString (boost::lexical_cast<std::string>(introducer.iExp), properties);
|
|
properties << ';';
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
// write intro key
|
|
WriteString ("key", properties);
|
|
properties << '=';
|
|
char value[64];
|
|
size_t l = ByteStreamToBase64 (address.ssu->key, 32, value, 64);
|
|
value[l] = 0;
|
|
WriteString (value, properties);
|
|
properties << ';';
|
|
// write mtu
|
|
if (address.ssu->mtu)
|
|
{
|
|
WriteString ("mtu", properties);
|
|
properties << '=';
|
|
WriteString (boost::lexical_cast<std::string>(address.ssu->mtu), properties);
|
|
properties << ';';
|
|
}
|
|
}
|
|
|
|
if (address.IsPublishedNTCP2 ())
|
|
{
|
|
// publish i for NTCP2
|
|
WriteString ("i", properties); properties << '=';
|
|
WriteString (address.ntcp2->iv.ToBase64 (), properties); properties << ';';
|
|
}
|
|
|
|
if (isPublished || address.ssu)
|
|
{
|
|
WriteString ("port", properties);
|
|
properties << '=';
|
|
WriteString (boost::lexical_cast<std::string>(address.port), properties);
|
|
properties << ';';
|
|
}
|
|
if (address.IsNTCP2 ())
|
|
{
|
|
// publish s and v for NTCP2
|
|
WriteString ("s", properties); properties << '=';
|
|
WriteString (address.ntcp2->staticKey.ToBase64 (), properties); properties << ';';
|
|
WriteString ("v", properties); properties << '=';
|
|
WriteString ("2", properties); properties << ';';
|
|
}
|
|
|
|
uint16_t size = htobe16 (properties.str ().size ());
|
|
s.write ((char *)&size, sizeof (size));
|
|
s.write (properties.str ().c_str (), properties.str ().size ());
|
|
}
|
|
|
|
// peers
|
|
uint8_t numPeers = 0;
|
|
s.write ((char *)&numPeers, sizeof (numPeers));
|
|
|
|
// properties
|
|
std::stringstream properties;
|
|
for (const auto& p : m_Properties)
|
|
{
|
|
WriteString (p.first, properties);
|
|
properties << '=';
|
|
WriteString (p.second, properties);
|
|
properties << ';';
|
|
}
|
|
uint16_t size = htobe16 (properties.str ().size ());
|
|
s.write ((char *)&size, sizeof (size));
|
|
s.write (properties.str ().c_str (), properties.str ().size ());
|
|
}
|
|
|
|
bool RouterInfo::IsNewer (const uint8_t * buf, size_t len) const
|
|
{
|
|
if (!m_RouterIdentity) return false;
|
|
size_t size = m_RouterIdentity->GetFullLen ();
|
|
if (size + 8 > len) return false;
|
|
return bufbe64toh (buf + size) > m_Timestamp;
|
|
}
|
|
|
|
const uint8_t * RouterInfo::LoadBuffer ()
|
|
{
|
|
if (!m_Buffer)
|
|
{
|
|
if (LoadFile ())
|
|
LogPrint (eLogDebug, "RouterInfo: Buffer for ", GetIdentHashAbbreviation (GetIdentHash ()), " loaded from file");
|
|
}
|
|
return m_Buffer;
|
|
}
|
|
|
|
void RouterInfo::CreateBuffer (const PrivateKeys& privateKeys)
|
|
{
|
|
m_Timestamp = i2p::util::GetMillisecondsSinceEpoch (); // refresh timstamp
|
|
std::stringstream s;
|
|
uint8_t ident[1024];
|
|
auto identLen = privateKeys.GetPublic ()->ToBuffer (ident, 1024);
|
|
auto signatureLen = privateKeys.GetPublic ()->GetSignatureLen ();
|
|
s.write ((char *)ident, identLen);
|
|
WriteToStream (s);
|
|
m_BufferLen = s.str ().size ();
|
|
if (!m_Buffer)
|
|
m_Buffer = new uint8_t[MAX_RI_BUFFER_SIZE];
|
|
if (m_BufferLen + signatureLen < MAX_RI_BUFFER_SIZE)
|
|
{
|
|
memcpy (m_Buffer, s.str ().c_str (), m_BufferLen);
|
|
// signature
|
|
privateKeys.Sign ((uint8_t *)m_Buffer, m_BufferLen, (uint8_t *)m_Buffer + m_BufferLen);
|
|
m_BufferLen += signatureLen;
|
|
}
|
|
else
|
|
LogPrint (eLogError, "RouterInfo: Our RouterInfo is too long ", m_BufferLen + signatureLen);
|
|
}
|
|
|
|
bool RouterInfo::SaveToFile (const std::string& fullPath)
|
|
{
|
|
m_FullPath = fullPath;
|
|
if (!m_Buffer) {
|
|
LogPrint (eLogError, "RouterInfo: Can't save, m_Buffer == NULL");
|
|
return false;
|
|
}
|
|
std::ofstream f (fullPath, std::ofstream::binary | std::ofstream::out);
|
|
if (!f.is_open ()) {
|
|
LogPrint(eLogError, "RouterInfo: Can't save to ", fullPath);
|
|
return false;
|
|
}
|
|
f.write ((char *)m_Buffer, m_BufferLen);
|
|
return true;
|
|
}
|
|
|
|
size_t RouterInfo::ReadString (char * str, size_t len, std::istream& s) const
|
|
{
|
|
uint8_t l;
|
|
s.read ((char *)&l, 1);
|
|
if (l < len)
|
|
{
|
|
s.read (str, l);
|
|
if (!s) l = 0; // failed, return empty string
|
|
str[l] = 0;
|
|
}
|
|
else
|
|
{
|
|
LogPrint (eLogWarning, "RouterInfo: string length ", (int)l, " exceeds buffer size ", len);
|
|
s.seekg (l, std::ios::cur); // skip
|
|
str[0] = 0;
|
|
}
|
|
return l+1;
|
|
}
|
|
|
|
void RouterInfo::WriteString (const std::string& str, std::ostream& s) const
|
|
{
|
|
uint8_t len = str.size ();
|
|
s.write ((char *)&len, 1);
|
|
s.write (str.c_str (), len);
|
|
}
|
|
|
|
void RouterInfo::AddSSUAddress (const char * host, int port, const uint8_t * key, int mtu)
|
|
{
|
|
auto addr = std::make_shared<Address>();
|
|
addr->host = boost::asio::ip::address::from_string (host);
|
|
addr->port = port;
|
|
addr->transportStyle = eTransportSSU;
|
|
addr->cost = COST_SSU_DIRECT; // NTCP2 should have priority over SSU
|
|
addr->caps = i2p::data::RouterInfo::eSSUTesting | i2p::data::RouterInfo::eSSUIntroducer; // BC;
|
|
addr->date = 0;
|
|
addr->ssu.reset (new SSUExt ());
|
|
addr->ssu->mtu = mtu;
|
|
if (key)
|
|
memcpy (addr->ssu->key, key, 32);
|
|
else
|
|
RAND_bytes (addr->ssu->key, 32);
|
|
for (const auto& it: *m_Addresses) // don't insert same address twice
|
|
if (*it == *addr) return;
|
|
m_SupportedTransports |= addr->host.is_v6 () ? eSSUV6 : eSSUV4;
|
|
m_Addresses->push_back(std::move(addr));
|
|
|
|
m_Caps |= eSSUTesting;
|
|
m_Caps |= eSSUIntroducer;
|
|
}
|
|
|
|
void RouterInfo::AddNTCP2Address (const uint8_t * staticKey, const uint8_t * iv, const boost::asio::ip::address& host, int port)
|
|
{
|
|
auto addr = std::make_shared<Address>();
|
|
addr->host = host;
|
|
addr->port = port;
|
|
addr->transportStyle = eTransportNTCP;
|
|
addr->cost = port ? COST_NTCP2_PUBLISHED : COST_NTCP2_NON_PUBLISHED; // override from RouterContext::PublishNTCP2Address
|
|
addr->caps = 0;
|
|
addr->date = 0;
|
|
addr->ntcp2.reset (new NTCP2Ext ());
|
|
if (port) addr->ntcp2->isPublished = true;
|
|
memcpy (addr->ntcp2->staticKey, staticKey, 32);
|
|
memcpy (addr->ntcp2->iv, iv, 16);
|
|
m_Addresses->push_back(std::move(addr));
|
|
}
|
|
|
|
bool RouterInfo::AddIntroducer (const Introducer& introducer)
|
|
{
|
|
for (auto& addr : *m_Addresses)
|
|
{
|
|
if (addr->transportStyle == eTransportSSU && addr->host.is_v4 ())
|
|
{
|
|
for (auto& intro: addr->ssu->introducers)
|
|
if (intro.iTag == introducer.iTag) return false; // already presented
|
|
addr->ssu->introducers.push_back (introducer);
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool RouterInfo::RemoveIntroducer (const boost::asio::ip::udp::endpoint& e)
|
|
{
|
|
for (auto& addr: *m_Addresses)
|
|
{
|
|
if (addr->transportStyle == eTransportSSU && addr->host.is_v4 ())
|
|
{
|
|
for (auto it = addr->ssu->introducers.begin (); it != addr->ssu->introducers.end (); ++it)
|
|
if ( boost::asio::ip::udp::endpoint (it->iHost, it->iPort) == e)
|
|
{
|
|
addr->ssu->introducers.erase (it);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void RouterInfo::SetCaps (uint8_t caps)
|
|
{
|
|
m_Caps = caps;
|
|
UpdateCapsProperty ();
|
|
}
|
|
|
|
void RouterInfo::SetCaps (const char * caps)
|
|
{
|
|
SetProperty ("caps", caps);
|
|
m_Caps = 0;
|
|
ExtractCaps (caps);
|
|
}
|
|
|
|
void RouterInfo::SetProperty (const std::string& key, const std::string& value)
|
|
{
|
|
m_Properties[key] = value;
|
|
}
|
|
|
|
void RouterInfo::DeleteProperty (const std::string& key)
|
|
{
|
|
m_Properties.erase (key);
|
|
}
|
|
|
|
std::string RouterInfo::GetProperty (const std::string& key) const
|
|
{
|
|
auto it = m_Properties.find (key);
|
|
if (it != m_Properties.end ())
|
|
return it->second;
|
|
return "";
|
|
}
|
|
|
|
bool RouterInfo::IsSSU (bool v4only) const
|
|
{
|
|
if (v4only)
|
|
return m_SupportedTransports & eSSUV4;
|
|
else
|
|
return m_SupportedTransports & (eSSUV4 | eSSUV6);
|
|
}
|
|
|
|
bool RouterInfo::IsSSUV6 () const
|
|
{
|
|
return m_SupportedTransports & eSSUV6;
|
|
}
|
|
|
|
bool RouterInfo::IsNTCP2 (bool v4only) const
|
|
{
|
|
if (v4only)
|
|
return m_SupportedTransports & eNTCP2V4;
|
|
else
|
|
return m_SupportedTransports & (eNTCP2V4 | eNTCP2V6);
|
|
}
|
|
|
|
bool RouterInfo::IsNTCP2V6 () const
|
|
{
|
|
return m_SupportedTransports & eNTCP2V6;
|
|
}
|
|
|
|
bool RouterInfo::IsV6 () const
|
|
{
|
|
return m_SupportedTransports & (eSSUV6 | eNTCP2V6);
|
|
}
|
|
|
|
bool RouterInfo::IsV4 () const
|
|
{
|
|
return m_SupportedTransports & (eSSUV4 | eNTCP2V4);
|
|
}
|
|
|
|
bool RouterInfo::IsMesh () const
|
|
{
|
|
return m_SupportedTransports & eNTCP2V6Mesh;
|
|
}
|
|
|
|
void RouterInfo::EnableV6 ()
|
|
{
|
|
if (!IsV6 ())
|
|
m_SupportedTransports |= eSSUV6 | eNTCP2V6;
|
|
}
|
|
|
|
void RouterInfo::EnableV4 ()
|
|
{
|
|
if (!IsV4 ())
|
|
m_SupportedTransports |= eSSUV4 | eNTCP2V4;
|
|
}
|
|
|
|
|
|
void RouterInfo::DisableV6 ()
|
|
{
|
|
if (IsV6 ())
|
|
{
|
|
m_SupportedTransports &= ~(eSSUV6 | eNTCP2V6);
|
|
for (auto it = m_Addresses->begin (); it != m_Addresses->end ();)
|
|
{
|
|
auto addr = *it;
|
|
if (addr->host.is_v6 ())
|
|
it = m_Addresses->erase (it);
|
|
else
|
|
++it;
|
|
}
|
|
}
|
|
}
|
|
|
|
void RouterInfo::DisableV4 ()
|
|
{
|
|
if (IsV4 ())
|
|
{
|
|
m_SupportedTransports &= ~(eSSUV4 | eNTCP2V4);
|
|
for (auto it = m_Addresses->begin (); it != m_Addresses->end ();)
|
|
{
|
|
auto addr = *it;
|
|
if (addr->host.is_v4 ())
|
|
it = m_Addresses->erase (it);
|
|
else
|
|
++it;
|
|
}
|
|
}
|
|
}
|
|
|
|
void RouterInfo::EnableMesh ()
|
|
{
|
|
if (!IsMesh ())
|
|
m_SupportedTransports |= eNTCP2V6Mesh;
|
|
}
|
|
|
|
void RouterInfo::DisableMesh ()
|
|
{
|
|
if (IsMesh ())
|
|
{
|
|
m_SupportedTransports &= ~eNTCP2V6Mesh;
|
|
for (auto it = m_Addresses->begin (); it != m_Addresses->end ();)
|
|
{
|
|
auto addr = *it;
|
|
if (i2p::util::net::IsYggdrasilAddress (addr->host))
|
|
it = m_Addresses->erase (it);
|
|
else
|
|
++it;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool RouterInfo::UsesIntroducer () const
|
|
{
|
|
return m_Caps & Caps::eUnreachable; // non-reachable
|
|
}
|
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetSSUAddress (bool v4only) const
|
|
{
|
|
return GetAddress (
|
|
[v4only](std::shared_ptr<const RouterInfo::Address> address)->bool
|
|
{
|
|
return (address->transportStyle == eTransportSSU) && (!v4only || address->host.is_v4 ());
|
|
});
|
|
}
|
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetSSUV6Address () const
|
|
{
|
|
return GetAddress (
|
|
[](std::shared_ptr<const RouterInfo::Address> address)->bool
|
|
{
|
|
return (address->transportStyle == eTransportSSU) && address->host.is_v6 ();
|
|
});
|
|
}
|
|
|
|
template<typename Filter>
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetAddress (Filter filter) const
|
|
{
|
|
// TODO: make it more generic using comparator
|
|
#if (BOOST_VERSION >= 105300)
|
|
auto addresses = boost::atomic_load (&m_Addresses);
|
|
#else
|
|
auto addresses = m_Addresses;
|
|
#endif
|
|
for (const auto& address : *addresses)
|
|
if (filter (address)) return address;
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetNTCP2AddressWithStaticKey (const uint8_t * key) const
|
|
{
|
|
if (!key) return nullptr;
|
|
return GetAddress (
|
|
[key](std::shared_ptr<const RouterInfo::Address> address)->bool
|
|
{
|
|
return address->IsNTCP2 () && !memcmp (address->ntcp2->staticKey, key, 32);
|
|
});
|
|
}
|
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetPublishedNTCP2V4Address () const
|
|
{
|
|
return GetAddress (
|
|
[](std::shared_ptr<const RouterInfo::Address> address)->bool
|
|
{
|
|
return address->IsPublishedNTCP2 () && address->host.is_v4 ();
|
|
});
|
|
}
|
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetPublishedNTCP2V6Address () const
|
|
{
|
|
return GetAddress (
|
|
[](std::shared_ptr<const RouterInfo::Address> address)->bool
|
|
{
|
|
return address->IsPublishedNTCP2 () && address->host.is_v6 () &&
|
|
!i2p::util::net::IsYggdrasilAddress (address->host);
|
|
});
|
|
}
|
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetYggdrasilAddress () const
|
|
{
|
|
return GetAddress (
|
|
[](std::shared_ptr<const RouterInfo::Address> address)->bool
|
|
{
|
|
return address->IsPublishedNTCP2 () && i2p::util::net::IsYggdrasilAddress (address->host);
|
|
});
|
|
}
|
|
|
|
std::shared_ptr<RouterProfile> RouterInfo::GetProfile () const
|
|
{
|
|
if (!m_Profile)
|
|
m_Profile = GetRouterProfile (GetIdentHash ());
|
|
return m_Profile;
|
|
}
|
|
|
|
void RouterInfo::Encrypt (const uint8_t * data, uint8_t * encrypted, BN_CTX * ctx) const
|
|
{
|
|
auto encryptor = m_RouterIdentity->CreateEncryptor (nullptr);
|
|
if (encryptor)
|
|
encryptor->Encrypt (data, encrypted, ctx, true);
|
|
}
|
|
|
|
bool RouterInfo::IsEligibleFloodfill () const
|
|
{
|
|
// floodfill must be reachable, >= 0.9.28 and not DSA
|
|
return IsReachable () && m_Version >= NETDB_MIN_FLOODFILL_VERSION &&
|
|
GetIdentity ()->GetSigningKeyType () != SIGNING_KEY_TYPE_DSA_SHA1;
|
|
}
|
|
|
|
bool RouterInfo::IsPeerTesting (bool v4only) const
|
|
{
|
|
auto supportedTransports = m_SupportedTransports & (eSSUV4 | eSSUV6);
|
|
if (!supportedTransports) return false; // no SSU
|
|
if (v4only && !(supportedTransports & eSSUV4)) return false; // no SSU v4
|
|
return (bool)GetAddress (
|
|
[](std::shared_ptr<const RouterInfo::Address> address)->bool
|
|
{
|
|
return (address->transportStyle == eTransportSSU) && address->IsPeerTesting ();
|
|
});
|
|
}
|
|
|
|
bool RouterInfo::IsIntroducer () const
|
|
{
|
|
// TODO: support ipv6
|
|
if (!(m_SupportedTransports & eSSUV4)) return false;
|
|
return (bool)GetAddress (
|
|
[](std::shared_ptr<const RouterInfo::Address> address)->bool
|
|
{
|
|
return (address->transportStyle == eTransportSSU) && address->IsIntroducer ();
|
|
});
|
|
}
|
|
|
|
bool RouterInfo::IsReachableFrom (const RouterInfo& other) const
|
|
{
|
|
auto commonTransports = m_SupportedTransports & other.m_SupportedTransports;
|
|
if (!commonTransports) return false;
|
|
if (commonTransports & eNTCP2V6Mesh) return true;
|
|
return (bool)GetAddress (
|
|
[commonTransports](std::shared_ptr<const RouterInfo::Address> address)->bool
|
|
{
|
|
// TODO:check v4 and v6 separately based on caps
|
|
if ((commonTransports & (eNTCP2V4 | eNTCP2V6)) && address->IsPublishedNTCP2 ()) return true;
|
|
if ((commonTransports & (eSSUV4 | eSSUV6)) && address->IsReachableSSU ()) return true;
|
|
return false;
|
|
});
|
|
}
|
|
}
|
|
}
|