mirror of
https://github.com/PurpleI2P/i2pd.git
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Reformat code
This commit is contained in:
Anatolii Cherednichenko
parent
3ddb370718
commit
55534ea002
140 changed files with 46068 additions and 48277 deletions
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@ -21,233 +21,276 @@
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#include "Garlic.h"
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#include "Tag.h"
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namespace i2p
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{
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namespace garlic
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{
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const int ECIESX25519_RESTART_TIMEOUT = 120; // number of second since session creation we can restart session after
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const int ECIESX25519_INACTIVITY_TIMEOUT = 90; // number of seconds we receive nothing and should restart if we can
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const int ECIESX25519_SEND_INACTIVITY_TIMEOUT = 5000; // number of milliseconds we can send empty(pyaload only) packet after
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const int ECIESX25519_SEND_EXPIRATION_TIMEOUT = 480; // in seconds
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const int ECIESX25519_RECEIVE_EXPIRATION_TIMEOUT = 600; // in seconds
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const int ECIESX25519_PREVIOUS_TAGSET_EXPIRATION_TIMEOUT = 180; // 180
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const int ECIESX25519_TAGSET_MAX_NUM_TAGS = 8192; // number of tags we request new tagset after
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const int ECIESX25519_MIN_NUM_GENERATED_TAGS = 24;
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const int ECIESX25519_MAX_NUM_GENERATED_TAGS = 320;
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const int ECIESX25519_NSR_NUM_GENERATED_TAGS = 12;
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namespace i2p {
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namespace garlic {
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const int ECIESX25519_RESTART_TIMEOUT = 120; // number of second since session creation we can restart session after
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const int ECIESX25519_INACTIVITY_TIMEOUT = 90; // number of seconds we receive nothing and should restart if we can
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const int ECIESX25519_SEND_INACTIVITY_TIMEOUT = 5000; // number of milliseconds we can send empty(pyaload only) packet after
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const int ECIESX25519_SEND_EXPIRATION_TIMEOUT = 480; // in seconds
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const int ECIESX25519_RECEIVE_EXPIRATION_TIMEOUT = 600; // in seconds
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const int ECIESX25519_PREVIOUS_TAGSET_EXPIRATION_TIMEOUT = 180; // 180
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const int ECIESX25519_TAGSET_MAX_NUM_TAGS = 8192; // number of tags we request new tagset after
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const int ECIESX25519_MIN_NUM_GENERATED_TAGS = 24;
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const int ECIESX25519_MAX_NUM_GENERATED_TAGS = 320;
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const int ECIESX25519_NSR_NUM_GENERATED_TAGS = 12;
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const size_t ECIESX25519_OPTIMAL_PAYLOAD_SIZE = 1912; // 1912 = 1956 /* to fit 2 tunnel messages */
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// - 16 /* I2NP header */ - 16 /* poly hash */ - 8 /* tag */ - 4 /* garlic length */
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const size_t ECIESX25519_OPTIMAL_PAYLOAD_SIZE = 1912; // 1912 = 1956 /* to fit 2 tunnel messages */
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// - 16 /* I2NP header */ - 16 /* poly hash */ - 8 /* tag */ - 4 /* garlic length */
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class RatchetTagSet
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{
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public:
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class RatchetTagSet {
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public:
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RatchetTagSet () {};
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virtual ~RatchetTagSet () {};
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RatchetTagSet() {};
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void DHInitialize (const uint8_t * rootKey, const uint8_t * k);
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void NextSessionTagRatchet ();
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uint64_t GetNextSessionTag ();
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const uint8_t * GetNextRootKey () const { return m_NextRootKey; };
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int GetNextIndex () const { return m_NextIndex; };
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void GetSymmKey (int index, uint8_t * key);
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void DeleteSymmKey (int index);
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virtual ~RatchetTagSet() {};
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int GetTagSetID () const { return m_TagSetID; };
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void SetTagSetID (int tagsetID) { m_TagSetID = tagsetID; };
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void DHInitialize(const uint8_t *rootKey, const uint8_t *k);
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private:
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void NextSessionTagRatchet();
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i2p::data::Tag<64> m_SessionTagKeyData;
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uint8_t m_SessTagConstant[32], m_SymmKeyCK[32], m_CurrentSymmKeyCK[64], m_NextRootKey[32];
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int m_NextIndex, m_NextSymmKeyIndex;
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std::unordered_map<int, i2p::data::Tag<32> > m_ItermediateSymmKeys;
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uint64_t GetNextSessionTag();
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int m_TagSetID = 0;
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};
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const uint8_t *GetNextRootKey() const { return m_NextRootKey; };
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class ECIESX25519AEADRatchetSession;
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class ReceiveRatchetTagSet: public RatchetTagSet,
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public std::enable_shared_from_this<ReceiveRatchetTagSet>
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{
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public:
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int GetNextIndex() const { return m_NextIndex; };
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ReceiveRatchetTagSet (std::shared_ptr<ECIESX25519AEADRatchetSession> session, bool isNS = false):
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m_Session (session), m_IsNS (isNS) {};
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void GetSymmKey(int index, uint8_t *key);
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bool IsNS () const { return m_IsNS; };
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std::shared_ptr<ECIESX25519AEADRatchetSession> GetSession () { return m_Session; };
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void SetTrimBehind (int index) { if (index > m_TrimBehindIndex) m_TrimBehindIndex = index; };
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int GetTrimBehind () const { return m_TrimBehindIndex; };
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void DeleteSymmKey(int index);
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void Expire ();
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bool IsExpired (uint64_t ts) const;
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int GetTagSetID() const { return m_TagSetID; };
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virtual bool IsIndexExpired (int index) const;
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virtual bool HandleNextMessage (uint8_t * buf, size_t len, int index);
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void SetTagSetID(int tagsetID) { m_TagSetID = tagsetID; };
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private:
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private:
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int m_TrimBehindIndex = 0;
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std::shared_ptr<ECIESX25519AEADRatchetSession> m_Session;
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bool m_IsNS;
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uint64_t m_ExpirationTimestamp = 0;
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};
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i2p::data::Tag<64> m_SessionTagKeyData;
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uint8_t m_SessTagConstant[32], m_SymmKeyCK[32], m_CurrentSymmKeyCK[64], m_NextRootKey[32];
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int m_NextIndex, m_NextSymmKeyIndex;
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std::unordered_map<int, i2p::data::Tag<32> > m_ItermediateSymmKeys;
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class SymmetricKeyTagSet: public ReceiveRatchetTagSet
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{
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public:
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int m_TagSetID = 0;
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};
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SymmetricKeyTagSet (GarlicDestination * destination, const uint8_t * key);
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class ECIESX25519AEADRatchetSession;
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bool IsIndexExpired (int index) const { return false; };
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bool HandleNextMessage (uint8_t * buf, size_t len, int index);
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class ReceiveRatchetTagSet : public RatchetTagSet,
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public std::enable_shared_from_this<ReceiveRatchetTagSet> {
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public:
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private:
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ReceiveRatchetTagSet(std::shared_ptr<ECIESX25519AEADRatchetSession> session, bool isNS = false) :
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m_Session(session), m_IsNS(isNS) {};
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GarlicDestination * m_Destination;
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uint8_t m_Key[32];
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};
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bool IsNS() const { return m_IsNS; };
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enum ECIESx25519BlockType
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{
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eECIESx25519BlkDateTime = 0,
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eECIESx25519BlkSessionID = 1,
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eECIESx25519BlkTermination = 4,
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eECIESx25519BlkOptions = 5,
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eECIESx25519BlkNextKey = 7,
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eECIESx25519BlkAck = 8,
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eECIESx25519BlkAckRequest = 9,
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eECIESx25519BlkGalicClove = 11,
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eECIESx25519BlkPadding = 254
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};
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std::shared_ptr<ECIESX25519AEADRatchetSession> GetSession() { return m_Session; };
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const uint8_t ECIESX25519_NEXT_KEY_KEY_PRESENT_FLAG = 0x01;
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const uint8_t ECIESX25519_NEXT_KEY_REVERSE_KEY_FLAG = 0x02;
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const uint8_t ECIESX25519_NEXT_KEY_REQUEST_REVERSE_KEY_FLAG = 0x04;
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void SetTrimBehind(int index) { if (index > m_TrimBehindIndex) m_TrimBehindIndex = index; };
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class ECIESX25519AEADRatchetSession: public GarlicRoutingSession,
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private i2p::crypto::NoiseSymmetricState,
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public std::enable_shared_from_this<ECIESX25519AEADRatchetSession>
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{
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enum SessionState
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{
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eSessionStateNew = 0,
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eSessionStateNewSessionReceived,
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eSessionStateNewSessionSent,
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eSessionStateNewSessionReplySent,
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eSessionStateEstablished,
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eSessionStateOneTime
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};
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int GetTrimBehind() const { return m_TrimBehindIndex; };
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struct DHRatchet
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{
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int keyID = 0;
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std::shared_ptr<i2p::crypto::X25519Keys> key;
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uint8_t remote[32]; // last remote public key
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bool newKey = true;
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};
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void Expire();
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public:
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bool IsExpired(uint64_t ts) const;
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ECIESX25519AEADRatchetSession (GarlicDestination * owner, bool attachLeaseSetNS);
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~ECIESX25519AEADRatchetSession ();
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virtual bool IsIndexExpired(int index) const;
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bool HandleNextMessage (uint8_t * buf, size_t len, std::shared_ptr<ReceiveRatchetTagSet> receiveTagset, int index = 0);
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std::shared_ptr<I2NPMessage> WrapSingleMessage (std::shared_ptr<const I2NPMessage> msg);
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std::shared_ptr<I2NPMessage> WrapOneTimeMessage (std::shared_ptr<const I2NPMessage> msg);
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virtual bool HandleNextMessage(uint8_t *buf, size_t len, int index);
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const uint8_t * GetRemoteStaticKey () const { return m_RemoteStaticKey; }
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void SetRemoteStaticKey (const uint8_t * key) { memcpy (m_RemoteStaticKey, key, 32); }
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private:
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void Terminate () { m_IsTerminated = true; }
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void SetDestination (const i2p::data::IdentHash& dest) // TODO:
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{
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if (!m_Destination) m_Destination.reset (new i2p::data::IdentHash (dest));
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}
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int m_TrimBehindIndex = 0;
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std::shared_ptr<ECIESX25519AEADRatchetSession> m_Session;
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bool m_IsNS;
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uint64_t m_ExpirationTimestamp = 0;
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};
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bool CheckExpired (uint64_t ts); // true is expired
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bool CanBeRestarted (uint64_t ts) const { return ts > m_SessionCreatedTimestamp + ECIESX25519_RESTART_TIMEOUT; }
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bool IsInactive (uint64_t ts) const { return ts > m_LastActivityTimestamp + ECIESX25519_INACTIVITY_TIMEOUT && CanBeRestarted (ts); }
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class SymmetricKeyTagSet : public ReceiveRatchetTagSet {
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public:
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bool IsRatchets () const { return true; };
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bool IsReadyToSend () const { return m_State != eSessionStateNewSessionSent; };
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bool IsTerminated () const { return m_IsTerminated; }
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uint64_t GetLastActivityTimestamp () const { return m_LastActivityTimestamp; };
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SymmetricKeyTagSet(GarlicDestination *destination, const uint8_t *key);
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protected:
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bool IsIndexExpired(int index) const { return false; };
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i2p::crypto::NoiseSymmetricState& GetNoiseState () { return *this; };
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void SetNoiseState (const i2p::crypto::NoiseSymmetricState& state) { GetNoiseState () = state; };
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void CreateNonce (uint64_t seqn, uint8_t * nonce);
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void HandlePayload (const uint8_t * buf, size_t len, const std::shared_ptr<ReceiveRatchetTagSet>& receiveTagset, int index);
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bool HandleNextMessage(uint8_t *buf, size_t len, int index);
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private:
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private:
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bool GenerateEphemeralKeysAndEncode (uint8_t * buf); // buf is 32 bytes
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void InitNewSessionTagset (std::shared_ptr<RatchetTagSet> tagsetNsr) const;
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GarlicDestination *m_Destination;
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uint8_t m_Key[32];
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};
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bool HandleNewIncomingSession (const uint8_t * buf, size_t len);
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bool HandleNewOutgoingSessionReply (uint8_t * buf, size_t len);
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bool HandleExistingSessionMessage (uint8_t * buf, size_t len, std::shared_ptr<ReceiveRatchetTagSet> receiveTagset, int index);
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void HandleNextKey (const uint8_t * buf, size_t len, const std::shared_ptr<ReceiveRatchetTagSet>& receiveTagset);
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enum ECIESx25519BlockType {
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eECIESx25519BlkDateTime = 0,
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eECIESx25519BlkSessionID = 1,
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eECIESx25519BlkTermination = 4,
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eECIESx25519BlkOptions = 5,
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eECIESx25519BlkNextKey = 7,
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eECIESx25519BlkAck = 8,
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eECIESx25519BlkAckRequest = 9,
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eECIESx25519BlkGalicClove = 11,
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eECIESx25519BlkPadding = 254
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};
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bool NewOutgoingSessionMessage (const uint8_t * payload, size_t len, uint8_t * out, size_t outLen, bool isStatic = true);
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bool NewSessionReplyMessage (const uint8_t * payload, size_t len, uint8_t * out, size_t outLen);
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bool NextNewSessionReplyMessage (const uint8_t * payload, size_t len, uint8_t * out, size_t outLen);
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bool NewExistingSessionMessage (const uint8_t * payload, size_t len, uint8_t * out, size_t outLen);
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const uint8_t ECIESX25519_NEXT_KEY_KEY_PRESENT_FLAG = 0x01;
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const uint8_t ECIESX25519_NEXT_KEY_REVERSE_KEY_FLAG = 0x02;
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const uint8_t ECIESX25519_NEXT_KEY_REQUEST_REVERSE_KEY_FLAG = 0x04;
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size_t CreatePayload (std::shared_ptr<const I2NPMessage> msg, bool first, uint8_t * payload);
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size_t CreateGarlicClove (std::shared_ptr<const I2NPMessage> msg, uint8_t * buf, size_t len);
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size_t CreateLeaseSetClove (std::shared_ptr<const i2p::data::LocalLeaseSet> ls, uint64_t ts, uint8_t * buf, size_t len);
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class ECIESX25519AEADRatchetSession : public GarlicRoutingSession,
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private i2p::crypto::NoiseSymmetricState,
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public std::enable_shared_from_this<ECIESX25519AEADRatchetSession> {
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enum SessionState {
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eSessionStateNew = 0,
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eSessionStateNewSessionReceived,
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eSessionStateNewSessionSent,
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eSessionStateNewSessionReplySent,
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eSessionStateEstablished,
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eSessionStateOneTime
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};
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void GenerateMoreReceiveTags (std::shared_ptr<ReceiveRatchetTagSet> receiveTagset, int numTags);
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void NewNextSendRatchet ();
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struct DHRatchet {
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int keyID = 0;
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std::shared_ptr<i2p::crypto::X25519Keys> key;
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uint8_t remote[32]; // last remote public key
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bool newKey = true;
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};
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private:
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public:
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uint8_t m_RemoteStaticKey[32];
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uint8_t m_Aepk[32]; // Alice's ephemeral keys, for incoming only
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uint8_t m_NSREncodedKey[32], m_NSRH[32], m_NSRKey[32]; // new session reply, for incoming only
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std::shared_ptr<i2p::crypto::X25519Keys> m_EphemeralKeys;
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SessionState m_State = eSessionStateNew;
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uint64_t m_SessionCreatedTimestamp = 0, m_LastActivityTimestamp = 0, // incoming (in seconds)
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m_LastSentTimestamp = 0; // in milliseconds
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std::shared_ptr<RatchetTagSet> m_SendTagset, m_NSRSendTagset;
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std::unique_ptr<i2p::data::IdentHash> m_Destination;// TODO: might not need it
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std::list<std::pair<uint16_t, int> > m_AckRequests; // (tagsetid, index)
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bool m_SendReverseKey = false, m_SendForwardKey = false, m_IsTerminated = false;
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std::unique_ptr<DHRatchet> m_NextReceiveRatchet, m_NextSendRatchet;
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uint8_t m_PaddingSizes[32], m_NextPaddingSize;
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ECIESX25519AEADRatchetSession(GarlicDestination *owner, bool attachLeaseSetNS);
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public:
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~ECIESX25519AEADRatchetSession();
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// for HTTP only
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int GetState () const { return (int)m_State; }
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i2p::data::IdentHash GetDestination () const
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{
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return m_Destination ? *m_Destination : i2p::data::IdentHash ();
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}
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};
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bool HandleNextMessage(uint8_t *buf, size_t len, std::shared_ptr<ReceiveRatchetTagSet> receiveTagset,
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int index = 0);
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// single session for all incoming messages
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class RouterIncomingRatchetSession: public ECIESX25519AEADRatchetSession
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{
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public:
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std::shared_ptr<I2NPMessage> WrapSingleMessage(std::shared_ptr<const I2NPMessage> msg);
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RouterIncomingRatchetSession (const i2p::crypto::NoiseSymmetricState& initState);
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bool HandleNextMessage (const uint8_t * buf, size_t len);
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i2p::crypto::NoiseSymmetricState& GetCurrentNoiseState () { return m_CurrentNoiseState; };
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std::shared_ptr<I2NPMessage> WrapOneTimeMessage(std::shared_ptr<const I2NPMessage> msg);
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private:
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const uint8_t *GetRemoteStaticKey() const { return m_RemoteStaticKey; }
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i2p::crypto::NoiseSymmetricState m_CurrentNoiseState;
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};
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void SetRemoteStaticKey(const uint8_t *key) { memcpy(m_RemoteStaticKey, key, 32); }
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std::shared_ptr<I2NPMessage> WrapECIESX25519Message (std::shared_ptr<const I2NPMessage> msg, const uint8_t * key, uint64_t tag);
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std::shared_ptr<I2NPMessage> WrapECIESX25519MessageForRouter (std::shared_ptr<const I2NPMessage> msg, const uint8_t * routerPublicKey);
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}
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void Terminate() { m_IsTerminated = true; }
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void SetDestination(const i2p::data::IdentHash &dest) // TODO:
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{
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if (!m_Destination) m_Destination.reset(new i2p::data::IdentHash(dest));
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}
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bool CheckExpired(uint64_t ts); // true is expired
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bool CanBeRestarted(uint64_t ts) const {
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return ts > m_SessionCreatedTimestamp + ECIESX25519_RESTART_TIMEOUT;
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}
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bool IsInactive(uint64_t ts) const {
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return ts > m_LastActivityTimestamp + ECIESX25519_INACTIVITY_TIMEOUT && CanBeRestarted(ts);
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}
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bool IsRatchets() const { return true; };
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bool IsReadyToSend() const { return m_State != eSessionStateNewSessionSent; };
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bool IsTerminated() const { return m_IsTerminated; }
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uint64_t GetLastActivityTimestamp() const { return m_LastActivityTimestamp; };
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protected:
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i2p::crypto::NoiseSymmetricState &GetNoiseState() { return *this; };
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void SetNoiseState(const i2p::crypto::NoiseSymmetricState &state) { GetNoiseState() = state; };
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void CreateNonce(uint64_t seqn, uint8_t *nonce);
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void
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HandlePayload(const uint8_t *buf, size_t len, const std::shared_ptr<ReceiveRatchetTagSet> &receiveTagset,
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int index);
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private:
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bool GenerateEphemeralKeysAndEncode(uint8_t *buf); // buf is 32 bytes
|
||||
void InitNewSessionTagset(std::shared_ptr<RatchetTagSet> tagsetNsr) const;
|
||||
|
||||
bool HandleNewIncomingSession(const uint8_t *buf, size_t len);
|
||||
|
||||
bool HandleNewOutgoingSessionReply(uint8_t *buf, size_t len);
|
||||
|
||||
bool
|
||||
HandleExistingSessionMessage(uint8_t *buf, size_t len, std::shared_ptr<ReceiveRatchetTagSet> receiveTagset,
|
||||
int index);
|
||||
|
||||
void
|
||||
HandleNextKey(const uint8_t *buf, size_t len, const std::shared_ptr<ReceiveRatchetTagSet> &receiveTagset);
|
||||
|
||||
bool NewOutgoingSessionMessage(const uint8_t *payload, size_t len, uint8_t *out, size_t outLen,
|
||||
bool isStatic = true);
|
||||
|
||||
bool NewSessionReplyMessage(const uint8_t *payload, size_t len, uint8_t *out, size_t outLen);
|
||||
|
||||
bool NextNewSessionReplyMessage(const uint8_t *payload, size_t len, uint8_t *out, size_t outLen);
|
||||
|
||||
bool NewExistingSessionMessage(const uint8_t *payload, size_t len, uint8_t *out, size_t outLen);
|
||||
|
||||
size_t CreatePayload(std::shared_ptr<const I2NPMessage> msg, bool first, uint8_t *payload);
|
||||
|
||||
size_t CreateGarlicClove(std::shared_ptr<const I2NPMessage> msg, uint8_t *buf, size_t len);
|
||||
|
||||
size_t CreateLeaseSetClove(std::shared_ptr<const i2p::data::LocalLeaseSet> ls, uint64_t ts, uint8_t *buf,
|
||||
size_t len);
|
||||
|
||||
void GenerateMoreReceiveTags(std::shared_ptr<ReceiveRatchetTagSet> receiveTagset, int numTags);
|
||||
|
||||
void NewNextSendRatchet();
|
||||
|
||||
private:
|
||||
|
||||
uint8_t m_RemoteStaticKey[32];
|
||||
uint8_t m_Aepk[32]; // Alice's ephemeral keys, for incoming only
|
||||
uint8_t m_NSREncodedKey[32], m_NSRH[32], m_NSRKey[32]; // new session reply, for incoming only
|
||||
std::shared_ptr<i2p::crypto::X25519Keys> m_EphemeralKeys;
|
||||
SessionState m_State = eSessionStateNew;
|
||||
uint64_t m_SessionCreatedTimestamp = 0, m_LastActivityTimestamp = 0, // incoming (in seconds)
|
||||
m_LastSentTimestamp = 0; // in milliseconds
|
||||
std::shared_ptr<RatchetTagSet> m_SendTagset, m_NSRSendTagset;
|
||||
std::unique_ptr<i2p::data::IdentHash> m_Destination;// TODO: might not need it
|
||||
std::list<std::pair<uint16_t, int> > m_AckRequests; // (tagsetid, index)
|
||||
bool m_SendReverseKey = false, m_SendForwardKey = false, m_IsTerminated = false;
|
||||
std::unique_ptr<DHRatchet> m_NextReceiveRatchet, m_NextSendRatchet;
|
||||
uint8_t m_PaddingSizes[32], m_NextPaddingSize;
|
||||
|
||||
public:
|
||||
|
||||
// for HTTP only
|
||||
int GetState() const { return (int) m_State; }
|
||||
|
||||
i2p::data::IdentHash GetDestination() const {
|
||||
return m_Destination ? *m_Destination : i2p::data::IdentHash();
|
||||
}
|
||||
};
|
||||
|
||||
// single session for all incoming messages
|
||||
class RouterIncomingRatchetSession : public ECIESX25519AEADRatchetSession {
|
||||
public:
|
||||
|
||||
RouterIncomingRatchetSession(const i2p::crypto::NoiseSymmetricState &initState);
|
||||
|
||||
bool HandleNextMessage(const uint8_t *buf, size_t len);
|
||||
|
||||
i2p::crypto::NoiseSymmetricState &GetCurrentNoiseState() { return m_CurrentNoiseState; };
|
||||
|
||||
private:
|
||||
|
||||
i2p::crypto::NoiseSymmetricState m_CurrentNoiseState;
|
||||
};
|
||||
|
||||
std::shared_ptr<I2NPMessage>
|
||||
WrapECIESX25519Message(std::shared_ptr<const I2NPMessage> msg, const uint8_t *key, uint64_t tag);
|
||||
|
||||
std::shared_ptr<I2NPMessage>
|
||||
WrapECIESX25519MessageForRouter(std::shared_ptr<const I2NPMessage> msg, const uint8_t *routerPublicKey);
|
||||
}
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue