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I2P: End-to-End encrypted and anonymous Internet
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1381 lines
37 KiB
1381 lines
37 KiB
/* |
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* Copyright (c) 2013-2023, 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::Buffer::Buffer (const uint8_t * buf, size_t len) |
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{ |
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if (len > size ()) len = size (); |
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memcpy (data (), buf, len); |
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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_FamilyID (0), m_IsUpdated (false), m_IsUnreachable (false), |
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m_SupportedTransports (0),m_ReachableTransports (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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m_Buffer = NewBuffer (); // always RouterInfo's |
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ReadFromFile (fullPath); |
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} |
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RouterInfo::RouterInfo (std::shared_ptr<Buffer>&& buf, size_t len): |
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m_FamilyID (0), m_IsUpdated (true), m_IsUnreachable (false), |
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m_SupportedTransports (0), m_ReachableTransports (0), |
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m_Caps (0), m_Version (0) |
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{ |
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if (len <= MAX_RI_BUFFER_SIZE) |
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{ |
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m_Addresses = boost::make_shared<Addresses>(); // create empty list |
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m_Buffer = buf; |
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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 (const uint8_t * buf, size_t len): |
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RouterInfo (std::make_shared<Buffer> (buf, len), len) |
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{ |
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} |
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RouterInfo::~RouterInfo () |
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{ |
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} |
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bool 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 (eLogWarning, "RouterInfo: Updated buffer is too long ", len, ". Not changed"); |
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return false; |
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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_ReachableTransports = 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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ClearProperties (); |
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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 *)buf + identityLen, len - identityLen)); |
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ReadFromStream (str); |
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if (!m_IsUnreachable) |
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UpdateBuffer (buf, len); // save buffer |
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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 (eLogWarning, "RouterInfo: Updated signature verification failed. Not changed"); |
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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::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 (const std::string& fullPath) |
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{ |
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std::ifstream s(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", 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) |
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m_Buffer = NewBuffer (); |
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s.read((char *)m_Buffer->data (), 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 ", 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 (const std::string& fullPath) |
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{ |
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if (LoadFile (fullPath)) |
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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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if (!m_Buffer) |
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{ |
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m_IsUnreachable = true; |
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return; |
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} |
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m_RouterIdentity = std::make_shared<IdentityEx>(m_Buffer->data (), 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->data (), l, (uint8_t *)m_Buffer->data () + 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->data () + 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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if (!s) return; |
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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 = NewAddresses (); |
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uint8_t numAddresses; |
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s.read ((char *)&numAddresses, sizeof (numAddresses)); |
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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 = NewAddress (); |
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uint8_t cost; // ignore |
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s.read ((char *)&cost, sizeof (cost)); |
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s.read ((char *)&address->date, sizeof (address->date)); |
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bool isHost = false, isStaticKey = false, isV2 = 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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address->transportStyle = eTransportNTCP2; |
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else if (!strncmp (transportStyle, "SSU", 3)) // SSU or SSU2 |
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{ |
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address->transportStyle = eTransportSSU2; |
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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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if (address->transportStyle == eTransportUnknown) |
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{ |
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// skip unknown address |
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s.seekg (size, std::ios_base::cur); |
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if (s) continue; else return; |
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} |
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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 ()) |
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{ |
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if (!i2p::util::net::IsInReservedRange (address->host) || |
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i2p::util::net::IsYggdrasilAddress (address->host)) |
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isHost = true; |
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else |
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// we consider such address as invalid |
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address->transportStyle = eTransportUnknown; |
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} |
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} |
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else if (!strcmp (key, "port")) |
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{ |
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try |
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{ |
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address->port = boost::lexical_cast<int>(value); |
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} |
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catch (std::exception& ex) |
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{ |
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LogPrint (eLogWarning, "RouterInfo: 'port' exception ", ex.what ()); |
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} |
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} |
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else if (!strcmp (key, "mtu")) |
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{ |
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if (address->ssu) |
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{ |
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try |
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{ |
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address->ssu->mtu = boost::lexical_cast<int>(value); |
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} |
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catch (std::exception& ex) |
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{ |
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LogPrint (eLogWarning, "RouterInfo: 'mtu' exception ", ex.what ()); |
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} |
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} |
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else |
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LogPrint (eLogWarning, "RouterInfo: Unexpected field 'mtu' for NTCP2"); |
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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 or ssu2 static key |
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{ |
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Base64ToByteStream (value, strlen (value), address->s, 32); |
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isStaticKey = true; |
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} |
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else if (!strcmp (key, "i")) // ntcp2 iv or ssu2 intro |
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{ |
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if (address->IsNTCP2 ()) |
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{ |
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Base64ToByteStream (value, strlen (value), address->i, 16); |
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address->published = true; // presence of "i" means "published" NTCP2 |
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} |
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else if (address->IsSSU2 ()) |
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Base64ToByteStream (value, strlen (value), address->i, 32); |
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} |
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else if (!strcmp (key, "v")) |
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{ |
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if (!strcmp (value, "2")) |
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isV2 = true; |
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else |
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LogPrint (eLogWarning, "RouterInfo: Unexpected value ", value, " for v"); |
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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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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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{ |
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if (address->ssu->introducers.empty ()) // first time |
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address->ssu->introducers.reserve (3); |
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address->ssu->introducers.resize (index + 1); |
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} |
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Introducer& introducer = address->ssu->introducers.at (index); |
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if (!strcmp (key, "itag")) |
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{ |
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try |
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{ |
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introducer.iTag = boost::lexical_cast<uint32_t>(value); |
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} |
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catch (std::exception& ex) |
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{ |
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LogPrint (eLogWarning, "RouterInfo: 'itag' exception ", ex.what ()); |
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} |
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} |
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else if (!strcmp (key, "ih")) |
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Base64ToByteStream (value, strlen (value), introducer.iH, 32); |
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else if (!strcmp (key, "iexp")) |
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{ |
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try |
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{ |
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introducer.iExp = boost::lexical_cast<uint32_t>(value); |
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} |
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catch (std::exception& ex) |
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{ |
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LogPrint (eLogWarning, "RouterInfo: 'iexp' exception ", ex.what ()); |
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} |
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} |
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} |
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if (!s) return; |
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} |
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if (address->transportStyle == eTransportNTCP2) |
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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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m_ReachableTransports |= supportedTransports; |
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} |
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else if (!address->published) |
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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 == eTransportSSU2 && isV2) |
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{ |
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if (address->IsV4 ()) supportedTransports |= eSSU2V4; |
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if (address->IsV6 ()) supportedTransports |= eSSU2V6; |
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if (isHost && address->port) |
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{ |
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if (address->host.is_v4 ()) m_ReachableTransports |= eSSU2V4; |
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if (address->host.is_v6 ()) m_ReachableTransports |= eSSU2V6; |
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address->published = true; |
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} |
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if (address->ssu && !address->ssu->introducers.empty ()) |
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{ |
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// exclude invalid introducers |
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uint32_t ts = i2p::util::GetSecondsSinceEpoch (); |
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int numValid = 0; |
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for (auto& it: address->ssu->introducers) |
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{ |
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if (it.iTag && ts < it.iExp) |
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numValid++; |
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else |
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it.iTag = 0; |
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} |
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if (numValid) |
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m_ReachableTransports |= supportedTransports; |
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else |
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address->ssu->introducers.resize (0); |
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} |
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} |
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if (supportedTransports) |
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{ |
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if (!(m_SupportedTransports & supportedTransports)) // avoid duplicates |
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{ |
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for (uint8_t i = 0; i < eNumTransports; i++) |
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if ((1 << i) & supportedTransports) |
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(*addresses)[i] = address; |
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} |
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m_SupportedTransports |= supportedTransports; |
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} |
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} |
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// update addresses |
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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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m_Version = 0; |
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bool isNetId = false; |
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std::string family; |
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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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SetProperty (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)) |
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{ |
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isNetId = true; |
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if (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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} |
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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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family = value; |
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boost::to_lower (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 (family, GetIdentHash (), value)) |
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m_FamilyID = netdb.GetFamilies ().GetFamilyID (family); |
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else |
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LogPrint (eLogWarning, "RouterInfo: Family ", family, " signature verification failed"); |
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} |
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|
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if (!s) return; |
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} |
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|
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if (!m_SupportedTransports || !isNetId || !m_Version) |
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SetUnreachable (true); |
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} |
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|
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bool RouterInfo::IsFamily (FamilyID famid) const |
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{ |
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return m_FamilyID == famid; |
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} |
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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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|
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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_SSU2_TESTING: |
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caps |= AddressCaps::eSSUTesting; |
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break; |
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case CAPS_FLAG_SSU2_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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|
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bool RouterInfo::IsNewer (const uint8_t * buf, size_t len) const |
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{ |
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if (!m_RouterIdentity) return false; |
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size_t size = m_RouterIdentity->GetFullLen (); |
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if (size + 8 > len) return false; |
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return bufbe64toh (buf + size) > m_Timestamp; |
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} |
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|
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const uint8_t * RouterInfo::LoadBuffer (const std::string& fullPath) |
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{ |
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if (!m_Buffer) |
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{ |
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if (LoadFile (fullPath)) |
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LogPrint (eLogDebug, "RouterInfo: Buffer for ", GetIdentHashAbbreviation (GetIdentHash ()), " loaded from file"); |
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else |
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return nullptr; |
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} |
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return m_Buffer->data (); |
|
} |
|
|
|
bool RouterInfo::SaveToFile (const std::string& fullPath) |
|
{ |
|
if (m_IsUnreachable) return false; // don't save bad router |
|
if (!m_Buffer) |
|
{ |
|
LogPrint (eLogWarning, "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->data (), 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::AddNTCP2Address (const uint8_t * staticKey, const uint8_t * iv,int port, uint8_t caps) |
|
{ |
|
auto addr = std::make_shared<Address>(); |
|
addr->port = port; |
|
addr->transportStyle = eTransportNTCP2; |
|
addr->caps = caps; |
|
addr->date = 0; |
|
addr->published = false; |
|
memcpy (addr->s, staticKey, 32); |
|
memcpy (addr->i, iv, 16); |
|
if (addr->IsV4 ()) |
|
{ |
|
m_SupportedTransports |= eNTCP2V4; |
|
(*m_Addresses)[eNTCP2V4Idx] = addr; |
|
} |
|
if (addr->IsV6 ()) |
|
{ |
|
m_SupportedTransports |= eNTCP2V6; |
|
(*m_Addresses)[eNTCP2V6Idx] = addr; |
|
} |
|
} |
|
|
|
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 = eTransportNTCP2; |
|
addr->date = 0; |
|
addr->published = true; |
|
memcpy (addr->s, staticKey, 32); |
|
memcpy (addr->i, iv, 16); |
|
addr->caps = 0; |
|
if (host.is_unspecified ()) |
|
{ |
|
if (host.is_v4 ()) addr->caps |= eV4; |
|
if (host.is_v6 ()) addr->caps |= eV6; |
|
} |
|
if (addr->IsV4 ()) |
|
{ |
|
m_SupportedTransports |= eNTCP2V4; |
|
m_ReachableTransports |= eNTCP2V4; |
|
(*m_Addresses)[eNTCP2V4Idx] = addr; |
|
} |
|
if (addr->IsV6 ()) |
|
{ |
|
if (i2p::util::net::IsYggdrasilAddress (addr->host)) |
|
{ |
|
m_SupportedTransports |= eNTCP2V6Mesh; |
|
m_ReachableTransports |= eNTCP2V6Mesh; |
|
(*m_Addresses)[eNTCP2V6MeshIdx] = addr; |
|
} |
|
else |
|
{ |
|
m_SupportedTransports |= eNTCP2V6; |
|
m_ReachableTransports |= eNTCP2V6; |
|
(*m_Addresses)[eNTCP2V6Idx] = addr; |
|
} |
|
} |
|
} |
|
|
|
void RouterInfo::RemoveNTCP2Address (bool v4) |
|
{ |
|
if (v4) |
|
{ |
|
if ((*m_Addresses)[eNTCP2V6Idx]) |
|
(*m_Addresses)[eNTCP2V6Idx]->caps &= ~AddressCaps::eV4; |
|
(*m_Addresses)[eNTCP2V4Idx].reset (); |
|
} |
|
else |
|
{ |
|
if ((*m_Addresses)[eNTCP2V4Idx]) |
|
(*m_Addresses)[eNTCP2V4Idx]->caps &= ~AddressCaps::eV6; |
|
(*m_Addresses)[eNTCP2V6Idx].reset (); |
|
} |
|
UpdateSupportedTransports (); |
|
} |
|
|
|
void RouterInfo::AddSSU2Address (const uint8_t * staticKey, const uint8_t * introKey, int port, uint8_t caps) |
|
{ |
|
auto addr = std::make_shared<Address>(); |
|
addr->transportStyle = eTransportSSU2; |
|
addr->port = port; |
|
addr->caps = caps; |
|
addr->date = 0; |
|
addr->ssu.reset (new SSUExt ()); |
|
addr->ssu->mtu = 0; |
|
memcpy (addr->s, staticKey, 32); |
|
memcpy (addr->i, introKey, 32); |
|
if (addr->IsV4 ()) |
|
{ |
|
m_SupportedTransports |= eSSU2V4; |
|
(*m_Addresses)[eSSU2V4Idx] = addr; |
|
} |
|
if (addr->IsV6 ()) |
|
{ |
|
m_SupportedTransports |= eSSU2V6; |
|
(*m_Addresses)[eSSU2V6Idx] = addr; |
|
} |
|
} |
|
|
|
void RouterInfo::AddSSU2Address (const uint8_t * staticKey, const uint8_t * introKey, |
|
const boost::asio::ip::address& host, int port) |
|
{ |
|
auto addr = std::make_shared<Address>(); |
|
addr->transportStyle = eTransportSSU2; |
|
addr->host = host; |
|
addr->port = port; |
|
addr->published = true; |
|
addr->date = 0; |
|
addr->ssu.reset (new SSUExt ()); |
|
addr->ssu->mtu = 0; |
|
memcpy (addr->s, staticKey, 32); |
|
memcpy (addr->i, introKey, 32); |
|
if (!host.is_unspecified ()) |
|
addr->caps = i2p::data::RouterInfo::eSSUTesting | i2p::data::RouterInfo::eSSUIntroducer; // BC; |
|
else |
|
{ |
|
addr->caps = 0; |
|
if (host.is_v4 ()) addr->caps |= eV4; |
|
if (host.is_v6 ()) addr->caps |= eV6; |
|
} |
|
if (addr->IsV4 ()) |
|
{ |
|
m_SupportedTransports |= eSSU2V4; |
|
m_ReachableTransports |= eSSU2V4; |
|
(*m_Addresses)[eSSU2V4Idx] = addr; |
|
} |
|
if (addr->IsV6 ()) |
|
{ |
|
m_SupportedTransports |= eSSU2V6; |
|
m_ReachableTransports |= eSSU2V6; |
|
(*m_Addresses)[eSSU2V6Idx] = addr; |
|
} |
|
} |
|
|
|
void RouterInfo::RemoveSSU2Address (bool v4) |
|
{ |
|
if (v4) |
|
{ |
|
if ((*m_Addresses)[eSSU2V6Idx]) |
|
(*m_Addresses)[eSSU2V6Idx]->caps &= ~AddressCaps::eV4; |
|
(*m_Addresses)[eSSU2V4Idx].reset (); |
|
} |
|
else |
|
{ |
|
if ((*m_Addresses)[eSSU2V4Idx]) |
|
(*m_Addresses)[eSSU2V4Idx]->caps &= ~AddressCaps::eV6; |
|
(*m_Addresses)[eSSU2V6Idx].reset (); |
|
} |
|
UpdateSupportedTransports (); |
|
} |
|
|
|
bool RouterInfo::IsNTCP2 (bool v4only) const |
|
{ |
|
if (v4only) |
|
return m_SupportedTransports & eNTCP2V4; |
|
else |
|
return m_SupportedTransports & (eNTCP2V4 | eNTCP2V6); |
|
} |
|
|
|
|
|
void RouterInfo::EnableV6 () |
|
{ |
|
if (!IsV6 ()) |
|
{ |
|
uint8_t addressCaps = AddressCaps::eV6; |
|
if (IsV4 ()) addressCaps |= AddressCaps::eV4; |
|
SetUnreachableAddressesTransportCaps (addressCaps); |
|
UpdateSupportedTransports (); |
|
} |
|
} |
|
|
|
void RouterInfo::EnableV4 () |
|
{ |
|
if (!IsV4 ()) |
|
{ |
|
uint8_t addressCaps = AddressCaps::eV4; |
|
if (IsV6 ()) addressCaps |= AddressCaps::eV6; |
|
SetUnreachableAddressesTransportCaps (addressCaps); |
|
UpdateSupportedTransports (); |
|
} |
|
} |
|
|
|
|
|
void RouterInfo::DisableV6 () |
|
{ |
|
if (IsV6 ()) |
|
{ |
|
if ((*m_Addresses)[eNTCP2V6Idx]) |
|
{ |
|
if ((*m_Addresses)[eNTCP2V6Idx]->IsV4 () && (*m_Addresses)[eNTCP2V4Idx]) |
|
(*m_Addresses)[eNTCP2V4Idx]->caps &= ~AddressCaps::eV6; |
|
(*m_Addresses)[eNTCP2V6Idx].reset (); |
|
} |
|
if ((*m_Addresses)[eSSU2V6Idx]) |
|
{ |
|
if ((*m_Addresses)[eSSU2V6Idx]->IsV4 () && (*m_Addresses)[eSSU2V4Idx]) |
|
(*m_Addresses)[eSSU2V4Idx]->caps &= ~AddressCaps::eV6; |
|
(*m_Addresses)[eSSU2V6Idx].reset (); |
|
} |
|
UpdateSupportedTransports (); |
|
} |
|
} |
|
|
|
void RouterInfo::DisableV4 () |
|
{ |
|
if (IsV4 ()) |
|
{ |
|
if ((*m_Addresses)[eNTCP2V4Idx]) |
|
{ |
|
if ((*m_Addresses)[eNTCP2V4Idx]->IsV6 () && (*m_Addresses)[eNTCP2V6Idx]) |
|
(*m_Addresses)[eNTCP2V6Idx]->caps &= ~AddressCaps::eV4; |
|
(*m_Addresses)[eNTCP2V4Idx].reset (); |
|
} |
|
if ((*m_Addresses)[eSSU2V4Idx]) |
|
{ |
|
if ((*m_Addresses)[eSSU2V4Idx]->IsV6 () && (*m_Addresses)[eSSU2V6Idx]) |
|
(*m_Addresses)[eSSU2V6Idx]->caps &= ~AddressCaps::eV4; |
|
(*m_Addresses)[eSSU2V4Idx].reset (); |
|
} |
|
UpdateSupportedTransports (); |
|
} |
|
} |
|
|
|
void RouterInfo::EnableMesh () |
|
{ |
|
if (!IsMesh ()) |
|
{ |
|
m_SupportedTransports |= eNTCP2V6Mesh; |
|
m_ReachableTransports |= eNTCP2V6Mesh; |
|
} |
|
} |
|
|
|
void RouterInfo::DisableMesh () |
|
{ |
|
if (IsMesh ()) |
|
{ |
|
m_SupportedTransports &= ~eNTCP2V6Mesh; |
|
m_ReachableTransports &= ~eNTCP2V6Mesh; |
|
(*m_Addresses)[eNTCP2V6MeshIdx].reset (); |
|
} |
|
} |
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetSSU2V4Address () const |
|
{ |
|
return (*GetAddresses ())[eSSU2V4Idx]; |
|
} |
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetSSU2V6Address () const |
|
{ |
|
return (*GetAddresses ())[eSSU2V6Idx]; |
|
} |
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetSSU2Address (bool v4) const |
|
{ |
|
if (v4) |
|
{ |
|
if (m_SupportedTransports & eSSU2V4) |
|
return GetSSU2V4Address (); |
|
} |
|
else |
|
{ |
|
if (m_SupportedTransports & eSSU2V6) |
|
return GetSSU2V6Address (); |
|
} |
|
return nullptr; |
|
} |
|
|
|
boost::shared_ptr<RouterInfo::Addresses> RouterInfo::GetAddresses () const |
|
{ |
|
#if (BOOST_VERSION >= 105300) |
|
return boost::atomic_load (&m_Addresses); |
|
#else |
|
return m_Addresses; |
|
#endif |
|
} |
|
|
|
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 (address && filter (address)) return address; |
|
|
|
return nullptr; |
|
} |
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetNTCP2V4Address () const |
|
{ |
|
return (*GetAddresses ())[eNTCP2V4Idx]; |
|
} |
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetNTCP2V6Address () const |
|
{ |
|
return (*GetAddresses ())[eNTCP2V6Idx]; |
|
} |
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetPublishedNTCP2V4Address () const |
|
{ |
|
auto addr = (*GetAddresses ())[eNTCP2V4Idx]; |
|
if (addr && addr->IsPublishedNTCP2 ()) return addr; |
|
return nullptr; |
|
} |
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetPublishedNTCP2V6Address () const |
|
{ |
|
auto addr = (*GetAddresses ())[eNTCP2V6Idx]; |
|
if (addr && addr->IsPublishedNTCP2 ()) return addr; |
|
return nullptr; |
|
} |
|
|
|
std::shared_ptr<const RouterInfo::Address> RouterInfo::GetYggdrasilAddress () const |
|
{ |
|
return (*GetAddresses ())[eNTCP2V6MeshIdx]; |
|
} |
|
|
|
std::shared_ptr<RouterProfile> RouterInfo::GetProfile () const |
|
{ |
|
auto profile = m_Profile; |
|
if (!profile) |
|
{ |
|
profile = GetRouterProfile (GetIdentHash ()); |
|
m_Profile = profile; |
|
} |
|
return profile; |
|
} |
|
|
|
void RouterInfo::Encrypt (const uint8_t * data, uint8_t * encrypted) const |
|
{ |
|
auto encryptor = m_RouterIdentity->CreateEncryptor (nullptr); |
|
if (encryptor) |
|
encryptor->Encrypt (data, encrypted); |
|
} |
|
|
|
bool RouterInfo::IsEligibleFloodfill () const |
|
{ |
|
// floodfill must be reachable by ipv4, >= 0.9.38 and not DSA |
|
return IsReachableBy (eNTCP2V4 | eSSU2V4) && m_Version >= NETDB_MIN_FLOODFILL_VERSION && |
|
GetIdentity ()->GetSigningKeyType () != SIGNING_KEY_TYPE_DSA_SHA1; |
|
} |
|
|
|
bool RouterInfo::IsSSU2PeerTesting (bool v4) const |
|
{ |
|
if (!(m_SupportedTransports & (v4 ? eSSU2V4 : eSSU2V6))) return false; |
|
auto addr = (*GetAddresses ())[v4 ? eSSU2V4Idx : eSSU2V6Idx]; |
|
return addr && addr->IsPeerTesting () && addr->IsReachableSSU (); |
|
} |
|
|
|
bool RouterInfo::IsSSU2Introducer (bool v4) const |
|
{ |
|
if (!(m_SupportedTransports & (v4 ? eSSU2V4 : eSSU2V6))) return false; |
|
auto addr = (*GetAddresses ())[v4 ? eSSU2V4Idx : eSSU2V6Idx]; |
|
return addr && addr->IsIntroducer () && !addr->host.is_unspecified () && addr->port; |
|
} |
|
|
|
void RouterInfo::SetUnreachableAddressesTransportCaps (uint8_t transports) |
|
{ |
|
for (auto& addr: *m_Addresses) |
|
{ |
|
if (addr && !addr->published) |
|
{ |
|
addr->caps &= ~(eV4 | eV6); |
|
addr->caps |= transports; |
|
} |
|
} |
|
} |
|
|
|
void RouterInfo::UpdateSupportedTransports () |
|
{ |
|
m_SupportedTransports = 0; |
|
m_ReachableTransports = 0; |
|
for (const auto& addr: *m_Addresses) |
|
{ |
|
if (!addr) continue; |
|
uint8_t transports = 0; |
|
switch (addr->transportStyle) |
|
{ |
|
case eTransportNTCP2: |
|
if (addr->IsV4 ()) transports |= eNTCP2V4; |
|
if (addr->IsV6 ()) |
|
transports |= (i2p::util::net::IsYggdrasilAddress (addr->host) ? eNTCP2V6Mesh : eNTCP2V6); |
|
if (addr->IsPublishedNTCP2 ()) |
|
m_ReachableTransports |= transports; |
|
break; |
|
case eTransportSSU2: |
|
if (addr->IsV4 ()) transports |= eSSU2V4; |
|
if (addr->IsV6 ()) transports |= eSSU2V6; |
|
if (addr->IsReachableSSU ()) |
|
m_ReachableTransports |= transports; |
|
break; |
|
default: ; |
|
} |
|
m_SupportedTransports |= transports; |
|
} |
|
} |
|
|
|
void RouterInfo::UpdateBuffer (const uint8_t * buf, size_t len) |
|
{ |
|
if (!m_Buffer) |
|
m_Buffer = NewBuffer (); |
|
if (len > m_Buffer->size ()) len = m_Buffer->size (); |
|
memcpy (m_Buffer->data (), buf, len); |
|
m_BufferLen = len; |
|
} |
|
|
|
std::shared_ptr<RouterInfo::Buffer> RouterInfo::NewBuffer () const |
|
{ |
|
return netdb.NewRouterInfoBuffer (); |
|
} |
|
|
|
std::shared_ptr<RouterInfo::Address> RouterInfo::NewAddress () const |
|
{ |
|
return netdb.NewRouterInfoAddress (); |
|
} |
|
|
|
boost::shared_ptr<RouterInfo::Addresses> RouterInfo::NewAddresses () const |
|
{ |
|
return netdb.NewRouterInfoAddresses (); |
|
} |
|
|
|
void RouterInfo::RefreshTimestamp () |
|
{ |
|
m_Timestamp = i2p::util::GetMillisecondsSinceEpoch (); |
|
} |
|
|
|
void LocalRouterInfo::CreateBuffer (const PrivateKeys& privateKeys) |
|
{ |
|
RefreshTimestamp (); |
|
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); |
|
size_t len = s.str ().size (); |
|
if (len + signatureLen < MAX_RI_BUFFER_SIZE) |
|
{ |
|
UpdateBuffer ((const uint8_t *)s.str ().c_str (), len); |
|
// signature |
|
privateKeys.Sign (GetBuffer (), len, GetBufferPointer (len)); |
|
SetBufferLen (len + signatureLen); |
|
} |
|
else |
|
LogPrint (eLogError, "RouterInfo: Our RouterInfo is too long ", len + signatureLen); |
|
} |
|
|
|
void LocalRouterInfo::UpdateCaps (uint8_t caps) |
|
{ |
|
SetCaps (caps); |
|
UpdateCapsProperty (); |
|
} |
|
|
|
void LocalRouterInfo::UpdateCapsProperty () |
|
{ |
|
std::string caps; |
|
uint8_t c = GetCaps (); |
|
if (c & eFloodfill) |
|
{ |
|
if (c & eExtraBandwidth) caps += (c & eHighBandwidth) ? |
|
CAPS_FLAG_EXTRA_BANDWIDTH2 : // 'X' |
|
CAPS_FLAG_EXTRA_BANDWIDTH1; // 'P' |
|
else |
|
caps += CAPS_FLAG_HIGH_BANDWIDTH3; // 'O' |
|
caps += CAPS_FLAG_FLOODFILL; // floodfill |
|
} |
|
else |
|
{ |
|
if (c & eExtraBandwidth) |
|
caps += (c & eHighBandwidth) ? CAPS_FLAG_EXTRA_BANDWIDTH2 /* 'X' */ : CAPS_FLAG_EXTRA_BANDWIDTH1; /*'P' */ |
|
else |
|
caps += (c & eHighBandwidth) ? CAPS_FLAG_HIGH_BANDWIDTH3 /* 'O' */: CAPS_FLAG_LOW_BANDWIDTH2 /* 'L' */; // bandwidth |
|
} |
|
if (c & eHidden) caps += CAPS_FLAG_HIDDEN; // hidden |
|
if (c & eReachable) caps += CAPS_FLAG_REACHABLE; // reachable |
|
if (c & eUnreachable) caps += CAPS_FLAG_UNREACHABLE; // unreachable |
|
|
|
SetProperty ("caps", caps); |
|
} |
|
|
|
void LocalRouterInfo::WriteToStream (std::ostream& s) const |
|
{ |
|
auto addresses = GetAddresses (); |
|
if (!addresses) return; |
|
|
|
uint64_t ts = htobe64 (GetTimestamp ()); |
|
s.write ((const char *)&ts, sizeof (ts)); |
|
// addresses |
|
uint8_t numAddresses = 0; |
|
for (size_t idx = 0; idx < addresses->size(); idx++) |
|
{ |
|
auto addr_ptr = (*addresses)[idx]; |
|
if (!addr_ptr) continue; |
|
if (idx == eNTCP2V6Idx && addr_ptr == (*addresses)[eNTCP2V4Idx]) continue; |
|
if (idx == eSSU2V6Idx && addr_ptr == (*addresses)[eSSU2V4Idx]) continue; |
|
numAddresses++; |
|
} |
|
s.write ((char *)&numAddresses, sizeof (numAddresses)); |
|
for (size_t idx = 0; idx < addresses->size(); idx++) |
|
{ |
|
auto addr_ptr = (*addresses)[idx]; |
|
if (!addr_ptr) continue; |
|
if (idx == eNTCP2V6Idx && addr_ptr == (*addresses)[eNTCP2V4Idx]) continue; |
|
if (idx == eSSU2V6Idx && addr_ptr == (*addresses)[eSSU2V4Idx]) continue; |
|
const Address& address = *addr_ptr; |
|
// calculate cost |
|
uint8_t cost = 0x7f; |
|
if (address.transportStyle == eTransportNTCP2) |
|
cost = address.published ? COST_NTCP2_PUBLISHED : COST_NTCP2_NON_PUBLISHED; |
|
else if (address.transportStyle == eTransportSSU2) |
|
cost = address.published ? COST_SSU2_DIRECT : COST_SSU2_NON_PUBLISHED; |
|
else |
|
continue; // skip unknown address |
|
s.write ((const char *)&cost, sizeof (cost)); |
|
s.write ((const char *)&address.date, sizeof (address.date)); |
|
std::stringstream properties; |
|
bool isPublished = false; |
|
if (address.transportStyle == eTransportNTCP2) |
|
{ |
|
if (address.IsNTCP2 ()) |
|
{ |
|
WriteString ("NTCP2", s); |
|
if (address.IsPublishedNTCP2 () && !address.host.is_unspecified () && address.port) |
|
isPublished = true; |
|
else |
|
{ |
|
WriteString ("caps", properties); |
|
properties << '='; |
|
std::string caps; |
|
if (address.IsV4 ()) caps += CAPS_FLAG_V4; |
|
if (address.IsV6 ()) 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 == eTransportSSU2) |
|
{ |
|
WriteString ("SSU2", s); |
|
// caps |
|
std::string caps; |
|
if (address.published) |
|
{ |
|
isPublished = true; |
|
if (address.IsPeerTesting ()) caps += CAPS_FLAG_SSU2_TESTING; |
|
if (address.IsIntroducer ()) caps += CAPS_FLAG_SSU2_INTRODUCER; |
|
} |
|
else |
|
{ |
|
if (address.IsV4 ()) caps += CAPS_FLAG_V4; |
|
if (address.IsV6 ()) caps += CAPS_FLAG_V6; |
|
if (caps.empty ()) caps += CAPS_FLAG_V4; |
|
} |
|
if (!caps.empty ()) |
|
{ |
|
WriteString ("caps", properties); |
|
properties << '='; |
|
WriteString (caps, properties); |
|
properties << ';'; |
|
} |
|
} |
|
else |
|
WriteString ("", s); |
|
|
|
if (isPublished && !address.host.is_unspecified ()) |
|
{ |
|
WriteString ("host", properties); |
|
properties << '='; |
|
WriteString (address.host.to_string (), properties); |
|
properties << ';'; |
|
} |
|
if ((address.IsNTCP2 () && isPublished) || address.IsSSU2 ()) |
|
{ |
|
// publish i for NTCP2 or SSU2 |
|
WriteString ("i", properties); properties << '='; |
|
size_t len = address.IsSSU2 () ? 32 : 16; |
|
WriteString (address.i.ToBase64 (len), properties); properties << ';'; |
|
} |
|
if (address.transportStyle == eTransportSSU2) |
|
{ |
|
// write introducers if any |
|
if (address.ssu && !address.ssu->introducers.empty()) |
|
{ |
|
int 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++; |
|
} |
|
i = 0; |
|
for (const auto& introducer: address.ssu->introducers) |
|
{ |
|
WriteString ("ih" + boost::lexical_cast<std::string>(i), properties); |
|
properties << '='; |
|
char value[64]; |
|
size_t l = ByteStreamToBase64 (introducer.iH, 32, value, 64); |
|
value[l] = 0; |
|
WriteString (value, 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++; |
|
} |
|
} |
|
} |
|
|
|
if (address.transportStyle == eTransportSSU2) |
|
{ |
|
// write mtu |
|
if (address.ssu && address.ssu->mtu) |
|
{ |
|
WriteString ("mtu", properties); |
|
properties << '='; |
|
WriteString (boost::lexical_cast<std::string>(address.ssu->mtu), properties); |
|
properties << ';'; |
|
} |
|
} |
|
if (isPublished && address.port) |
|
{ |
|
WriteString ("port", properties); |
|
properties << '='; |
|
WriteString (boost::lexical_cast<std::string>(address.port), properties); |
|
properties << ';'; |
|
} |
|
if (address.IsNTCP2 () || address.IsSSU2 ()) |
|
{ |
|
// publish s and v for NTCP2 or SSU2 |
|
WriteString ("s", properties); properties << '='; |
|
WriteString (address.s.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 ()); |
|
} |
|
|
|
void LocalRouterInfo::SetProperty (const std::string& key, const std::string& value) |
|
{ |
|
m_Properties[key] = value; |
|
} |
|
|
|
void LocalRouterInfo::DeleteProperty (const std::string& key) |
|
{ |
|
m_Properties.erase (key); |
|
} |
|
|
|
std::string LocalRouterInfo::GetProperty (const std::string& key) const |
|
{ |
|
auto it = m_Properties.find (key); |
|
if (it != m_Properties.end ()) |
|
return it->second; |
|
return ""; |
|
} |
|
|
|
void LocalRouterInfo::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); |
|
} |
|
|
|
std::shared_ptr<RouterInfo::Buffer> LocalRouterInfo::NewBuffer () const |
|
{ |
|
return std::make_shared<Buffer> (); |
|
} |
|
|
|
std::shared_ptr<RouterInfo::Address> LocalRouterInfo::NewAddress () const |
|
{ |
|
return std::make_shared<Address> (); |
|
} |
|
|
|
boost::shared_ptr<RouterInfo::Addresses> LocalRouterInfo::NewAddresses () const |
|
{ |
|
return boost::make_shared<Addresses> (); |
|
} |
|
|
|
bool LocalRouterInfo::AddSSU2Introducer (const Introducer& introducer, bool v4) |
|
{ |
|
auto addresses = GetAddresses (); |
|
if (!addresses) return false; |
|
auto addr = (*addresses)[v4 ? eSSU2V4Idx : eSSU2V6Idx]; |
|
if (addr) |
|
{ |
|
for (auto& intro: addr->ssu->introducers) |
|
if (intro.iTag == introducer.iTag) return false; // already presented |
|
addr->ssu->introducers.push_back (introducer); |
|
SetReachableTransports (GetReachableTransports () | ((addr->IsV4 () ? eSSU2V4 : eSSU2V6))); |
|
return true; |
|
} |
|
return false; |
|
} |
|
|
|
bool LocalRouterInfo::RemoveSSU2Introducer (const IdentHash& h, bool v4) |
|
{ |
|
auto addresses = GetAddresses (); |
|
if (!addresses) return false; |
|
auto addr = (*addresses)[v4 ? eSSU2V4Idx : eSSU2V6Idx]; |
|
if (addr) |
|
{ |
|
for (auto it = addr->ssu->introducers.begin (); it != addr->ssu->introducers.end (); ++it) |
|
if (h == it->iH) |
|
{ |
|
addr->ssu->introducers.erase (it); |
|
if (addr->ssu->introducers.empty ()) |
|
SetReachableTransports (GetReachableTransports () & ~(addr->IsV4 () ? eSSU2V4 : eSSU2V6)); |
|
return true; |
|
} |
|
} |
|
return false; |
|
} |
|
} |
|
}
|
|
|