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-rw-r--r--src/netaddress.h861
1 files changed, 430 insertions, 431 deletions
diff --git a/src/netaddress.h b/src/netaddress.h
index 0d04ab88fb..cfb2edcd34 100644
--- a/src/netaddress.h
+++ b/src/netaddress.h
@@ -11,7 +11,9 @@
#include <attributes.h>
#include <compat.h>
+#include <crypto/siphash.h>
#include <prevector.h>
+#include <random.h>
#include <serialize.h>
#include <tinyformat.h>
#include <util/strencodings.h>
@@ -40,8 +42,7 @@ static constexpr int ADDRV2_FORMAT = 0x20000000;
* over all enum values and also `GetExtNetwork()` "extends" this enum by
* introducing standalone constants starting from `NET_MAX`.
*/
-enum Network
-{
+enum Network {
/// Addresses from these networks are not publicly routable on the global Internet.
NET_UNROUTABLE = 0,
@@ -71,16 +72,14 @@ enum Network
/// Prefix of an IPv6 address when it contains an embedded IPv4 address.
/// Used when (un)serializing addresses in ADDRv1 format (pre-BIP155).
static const std::array<uint8_t, 12> IPV4_IN_IPV6_PREFIX{
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF
-};
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF};
/// Prefix of an IPv6 address when it contains an embedded TORv2 address.
/// Used when (un)serializing addresses in ADDRv1 format (pre-BIP155).
/// Such dummy IPv6 addresses are guaranteed to not be publicly routable as they
/// fall under RFC4193's fc00::/7 subnet allocated to unique-local addresses.
static const std::array<uint8_t, 6> TORV2_IN_IPV6_PREFIX{
- 0xFD, 0x87, 0xD8, 0x7E, 0xEB, 0x43
-};
+ 0xFD, 0x87, 0xD8, 0x7E, 0xEB, 0x43};
/// Prefix of an IPv6 address when it contains an embedded "internal" address.
/// Used when (un)serializing addresses in ADDRv1 format (pre-BIP155).
@@ -110,462 +109,462 @@ static constexpr size_t ADDR_CJDNS_SIZE = 16;
/// Size of "internal" (NET_INTERNAL) address (in bytes).
static constexpr size_t ADDR_INTERNAL_SIZE = 10;
+/// SAM 3.1 and earlier do not support specifying ports and force the port to 0.
+static constexpr uint16_t I2P_SAM31_PORT{0};
+
/**
* Network address.
*/
class CNetAddr
{
- protected:
- /**
- * Raw representation of the network address.
- * In network byte order (big endian) for IPv4 and IPv6.
- */
- prevector<ADDR_IPV6_SIZE, uint8_t> m_addr{ADDR_IPV6_SIZE, 0x0};
-
- /**
- * Network to which this address belongs.
- */
- Network m_net{NET_IPV6};
-
- /**
- * Scope id if scoped/link-local IPV6 address.
- * See https://tools.ietf.org/html/rfc4007
- */
- uint32_t m_scope_id{0};
-
- public:
- CNetAddr();
- explicit CNetAddr(const struct in_addr& ipv4Addr);
- void SetIP(const CNetAddr& ip);
-
- /**
- * Set from a legacy IPv6 address.
- * Legacy IPv6 address may be a normal IPv6 address, or another address
- * (e.g. IPv4) disguised as IPv6. This encoding is used in the legacy
- * `addr` encoding.
- */
- void SetLegacyIPv6(Span<const uint8_t> ipv6);
-
- bool SetInternal(const std::string& name);
-
- /**
- * Parse a Tor or I2P address and set this object to it.
- * @param[in] addr Address to parse, for example
- * pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion or
- * ukeu3k5oycgaauneqgtnvselmt4yemvoilkln7jpvamvfx7dnkdq.b32.i2p.
- * @returns Whether the operation was successful.
- * @see CNetAddr::IsTor(), CNetAddr::IsI2P()
- */
- bool SetSpecial(const std::string& addr);
-
- bool IsBindAny() const; // INADDR_ANY equivalent
- bool IsIPv4() const; // IPv4 mapped address (::FFFF:0:0/96, 0.0.0.0/0)
- bool IsIPv6() const; // IPv6 address (not mapped IPv4, not Tor)
- bool IsRFC1918() const; // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12)
- bool IsRFC2544() const; // IPv4 inter-network communications (198.18.0.0/15)
- bool IsRFC6598() const; // IPv4 ISP-level NAT (100.64.0.0/10)
- bool IsRFC5737() const; // IPv4 documentation addresses (192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24)
- bool IsRFC3849() const; // IPv6 documentation address (2001:0DB8::/32)
- bool IsRFC3927() const; // IPv4 autoconfig (169.254.0.0/16)
- bool IsRFC3964() const; // IPv6 6to4 tunnelling (2002::/16)
- bool IsRFC4193() const; // IPv6 unique local (FC00::/7)
- bool IsRFC4380() const; // IPv6 Teredo tunnelling (2001::/32)
- bool IsRFC4843() const; // IPv6 ORCHID (deprecated) (2001:10::/28)
- bool IsRFC7343() const; // IPv6 ORCHIDv2 (2001:20::/28)
- bool IsRFC4862() const; // IPv6 autoconfig (FE80::/64)
- bool IsRFC6052() const; // IPv6 well-known prefix for IPv4-embedded address (64:FF9B::/96)
- bool IsRFC6145() const; // IPv6 IPv4-translated address (::FFFF:0:0:0/96) (actually defined in RFC2765)
- bool IsHeNet() const; // IPv6 Hurricane Electric - https://he.net (2001:0470::/36)
- bool IsTor() const;
- bool IsI2P() const;
- bool IsCJDNS() const;
- bool IsLocal() const;
- bool IsRoutable() const;
- bool IsInternal() const;
- bool IsValid() const;
-
- /**
- * Check if the current object can be serialized in pre-ADDRv2/BIP155 format.
- */
- bool IsAddrV1Compatible() const;
-
- enum Network GetNetwork() const;
- std::string ToString() const;
- std::string ToStringIP() const;
- uint64_t GetHash() const;
- bool GetInAddr(struct in_addr* pipv4Addr) const;
- Network GetNetClass() const;
-
- //! For IPv4, mapped IPv4, SIIT translated IPv4, Teredo, 6to4 tunneled addresses, return the relevant IPv4 address as a uint32.
- uint32_t GetLinkedIPv4() const;
- //! Whether this address has a linked IPv4 address (see GetLinkedIPv4()).
- bool HasLinkedIPv4() const;
-
- // The AS on the BGP path to the node we use to diversify
- // peers in AddrMan bucketing based on the AS infrastructure.
- // The ip->AS mapping depends on how asmap is constructed.
- uint32_t GetMappedAS(const std::vector<bool> &asmap) const;
-
- std::vector<unsigned char> GetGroup(const std::vector<bool> &asmap) const;
- std::vector<unsigned char> GetAddrBytes() const;
- int GetReachabilityFrom(const CNetAddr *paddrPartner = nullptr) const;
-
- explicit CNetAddr(const struct in6_addr& pipv6Addr, const uint32_t scope = 0);
- bool GetIn6Addr(struct in6_addr* pipv6Addr) const;
-
- friend bool operator==(const CNetAddr& a, const CNetAddr& b);
- friend bool operator!=(const CNetAddr& a, const CNetAddr& b) { return !(a == b); }
- friend bool operator<(const CNetAddr& a, const CNetAddr& b);
-
- /**
- * Whether this address should be relayed to other peers even if we can't reach it ourselves.
- */
- bool IsRelayable() const
- {
- return IsIPv4() || IsIPv6() || IsTor();
+protected:
+ /**
+ * Raw representation of the network address.
+ * In network byte order (big endian) for IPv4 and IPv6.
+ */
+ prevector<ADDR_IPV6_SIZE, uint8_t> m_addr{ADDR_IPV6_SIZE, 0x0};
+
+ /**
+ * Network to which this address belongs.
+ */
+ Network m_net{NET_IPV6};
+
+ /**
+ * Scope id if scoped/link-local IPV6 address.
+ * See https://tools.ietf.org/html/rfc4007
+ */
+ uint32_t m_scope_id{0};
+
+public:
+ CNetAddr();
+ explicit CNetAddr(const struct in_addr& ipv4Addr);
+ void SetIP(const CNetAddr& ip);
+
+ /**
+ * Set from a legacy IPv6 address.
+ * Legacy IPv6 address may be a normal IPv6 address, or another address
+ * (e.g. IPv4) disguised as IPv6. This encoding is used in the legacy
+ * `addr` encoding.
+ */
+ void SetLegacyIPv6(Span<const uint8_t> ipv6);
+
+ bool SetInternal(const std::string& name);
+
+ /**
+ * Parse a Tor or I2P address and set this object to it.
+ * @param[in] addr Address to parse, for example
+ * pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion or
+ * ukeu3k5oycgaauneqgtnvselmt4yemvoilkln7jpvamvfx7dnkdq.b32.i2p.
+ * @returns Whether the operation was successful.
+ * @see CNetAddr::IsTor(), CNetAddr::IsI2P()
+ */
+ bool SetSpecial(const std::string& addr);
+
+ bool IsBindAny() const; // INADDR_ANY equivalent
+ bool IsIPv4() const; // IPv4 mapped address (::FFFF:0:0/96, 0.0.0.0/0)
+ bool IsIPv6() const; // IPv6 address (not mapped IPv4, not Tor)
+ bool IsRFC1918() const; // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12)
+ bool IsRFC2544() const; // IPv4 inter-network communications (198.18.0.0/15)
+ bool IsRFC6598() const; // IPv4 ISP-level NAT (100.64.0.0/10)
+ bool IsRFC5737() const; // IPv4 documentation addresses (192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24)
+ bool IsRFC3849() const; // IPv6 documentation address (2001:0DB8::/32)
+ bool IsRFC3927() const; // IPv4 autoconfig (169.254.0.0/16)
+ bool IsRFC3964() const; // IPv6 6to4 tunnelling (2002::/16)
+ bool IsRFC4193() const; // IPv6 unique local (FC00::/7)
+ bool IsRFC4380() const; // IPv6 Teredo tunnelling (2001::/32)
+ bool IsRFC4843() const; // IPv6 ORCHID (deprecated) (2001:10::/28)
+ bool IsRFC7343() const; // IPv6 ORCHIDv2 (2001:20::/28)
+ bool IsRFC4862() const; // IPv6 autoconfig (FE80::/64)
+ bool IsRFC6052() const; // IPv6 well-known prefix for IPv4-embedded address (64:FF9B::/96)
+ bool IsRFC6145() const; // IPv6 IPv4-translated address (::FFFF:0:0:0/96) (actually defined in RFC2765)
+ bool IsHeNet() const; // IPv6 Hurricane Electric - https://he.net (2001:0470::/36)
+ bool IsTor() const;
+ bool IsI2P() const;
+ bool IsCJDNS() const;
+ bool IsLocal() const;
+ bool IsRoutable() const;
+ bool IsInternal() const;
+ bool IsValid() const;
+
+ /**
+ * Check if the current object can be serialized in pre-ADDRv2/BIP155 format.
+ */
+ bool IsAddrV1Compatible() const;
+
+ enum Network GetNetwork() const;
+ std::string ToString() const;
+ std::string ToStringIP() const;
+ uint64_t GetHash() const;
+ bool GetInAddr(struct in_addr* pipv4Addr) const;
+ Network GetNetClass() const;
+
+ //! For IPv4, mapped IPv4, SIIT translated IPv4, Teredo, 6to4 tunneled addresses, return the relevant IPv4 address as a uint32.
+ uint32_t GetLinkedIPv4() const;
+ //! Whether this address has a linked IPv4 address (see GetLinkedIPv4()).
+ bool HasLinkedIPv4() const;
+
+ // The AS on the BGP path to the node we use to diversify
+ // peers in AddrMan bucketing based on the AS infrastructure.
+ // The ip->AS mapping depends on how asmap is constructed.
+ uint32_t GetMappedAS(const std::vector<bool>& asmap) const;
+
+ std::vector<unsigned char> GetGroup(const std::vector<bool>& asmap) const;
+ std::vector<unsigned char> GetAddrBytes() const;
+ int GetReachabilityFrom(const CNetAddr* paddrPartner = nullptr) const;
+
+ explicit CNetAddr(const struct in6_addr& pipv6Addr, const uint32_t scope = 0);
+ bool GetIn6Addr(struct in6_addr* pipv6Addr) const;
+
+ friend bool operator==(const CNetAddr& a, const CNetAddr& b);
+ friend bool operator!=(const CNetAddr& a, const CNetAddr& b) { return !(a == b); }
+ friend bool operator<(const CNetAddr& a, const CNetAddr& b);
+
+ /**
+ * Whether this address should be relayed to other peers even if we can't reach it ourselves.
+ */
+ bool IsRelayable() const
+ {
+ return IsIPv4() || IsIPv6() || IsTor() || IsI2P();
+ }
+
+ /**
+ * Serialize to a stream.
+ */
+ template <typename Stream>
+ void Serialize(Stream& s) const
+ {
+ if (s.GetVersion() & ADDRV2_FORMAT) {
+ SerializeV2Stream(s);
+ } else {
+ SerializeV1Stream(s);
}
-
- /**
- * Serialize to a stream.
- */
- template <typename Stream>
- void Serialize(Stream& s) const
- {
- if (s.GetVersion() & ADDRV2_FORMAT) {
- SerializeV2Stream(s);
- } else {
- SerializeV1Stream(s);
- }
+ }
+
+ /**
+ * Unserialize from a stream.
+ */
+ template <typename Stream>
+ void Unserialize(Stream& s)
+ {
+ if (s.GetVersion() & ADDRV2_FORMAT) {
+ UnserializeV2Stream(s);
+ } else {
+ UnserializeV1Stream(s);
}
-
- /**
- * Unserialize from a stream.
- */
- template <typename Stream>
- void Unserialize(Stream& s)
- {
- if (s.GetVersion() & ADDRV2_FORMAT) {
- UnserializeV2Stream(s);
- } else {
- UnserializeV1Stream(s);
- }
+ }
+
+ friend class CNetAddrHash;
+ friend class CSubNet;
+
+private:
+ /**
+ * Parse a Tor address and set this object to it.
+ * @param[in] addr Address to parse, must be a valid C string, for example
+ * pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion.
+ * @returns Whether the operation was successful.
+ * @see CNetAddr::IsTor()
+ */
+ bool SetTor(const std::string& addr);
+
+ /**
+ * Parse an I2P address and set this object to it.
+ * @param[in] addr Address to parse, must be a valid C string, for example
+ * ukeu3k5oycgaauneqgtnvselmt4yemvoilkln7jpvamvfx7dnkdq.b32.i2p.
+ * @returns Whether the operation was successful.
+ * @see CNetAddr::IsI2P()
+ */
+ bool SetI2P(const std::string& addr);
+
+ /**
+ * BIP155 network ids recognized by this software.
+ */
+ enum BIP155Network : uint8_t {
+ IPV4 = 1,
+ IPV6 = 2,
+ TORV2 = 3,
+ TORV3 = 4,
+ I2P = 5,
+ CJDNS = 6,
+ };
+
+ /**
+ * Size of CNetAddr when serialized as ADDRv1 (pre-BIP155) (in bytes).
+ */
+ static constexpr size_t V1_SERIALIZATION_SIZE = ADDR_IPV6_SIZE;
+
+ /**
+ * Maximum size of an address as defined in BIP155 (in bytes).
+ * This is only the size of the address, not the entire CNetAddr object
+ * when serialized.
+ */
+ static constexpr size_t MAX_ADDRV2_SIZE = 512;
+
+ /**
+ * Get the BIP155 network id of this address.
+ * Must not be called for IsInternal() objects.
+ * @returns BIP155 network id, except TORV2 which is no longer supported.
+ */
+ BIP155Network GetBIP155Network() const;
+
+ /**
+ * Set `m_net` from the provided BIP155 network id and size after validation.
+ * @retval true the network was recognized, is valid and `m_net` was set
+ * @retval false not recognised (from future?) and should be silently ignored
+ * @throws std::ios_base::failure if the network is one of the BIP155 founding
+ * networks (id 1..6) with wrong address size.
+ */
+ bool SetNetFromBIP155Network(uint8_t possible_bip155_net, size_t address_size);
+
+ /**
+ * Serialize in pre-ADDRv2/BIP155 format to an array.
+ */
+ void SerializeV1Array(uint8_t (&arr)[V1_SERIALIZATION_SIZE]) const
+ {
+ size_t prefix_size;
+
+ switch (m_net) {
+ case NET_IPV6:
+ assert(m_addr.size() == sizeof(arr));
+ memcpy(arr, m_addr.data(), m_addr.size());
+ return;
+ case NET_IPV4:
+ prefix_size = sizeof(IPV4_IN_IPV6_PREFIX);
+ assert(prefix_size + m_addr.size() == sizeof(arr));
+ memcpy(arr, IPV4_IN_IPV6_PREFIX.data(), prefix_size);
+ memcpy(arr + prefix_size, m_addr.data(), m_addr.size());
+ return;
+ case NET_INTERNAL:
+ prefix_size = sizeof(INTERNAL_IN_IPV6_PREFIX);
+ assert(prefix_size + m_addr.size() == sizeof(arr));
+ memcpy(arr, INTERNAL_IN_IPV6_PREFIX.data(), prefix_size);
+ memcpy(arr + prefix_size, m_addr.data(), m_addr.size());
+ return;
+ case NET_ONION:
+ case NET_I2P:
+ case NET_CJDNS:
+ break;
+ case NET_UNROUTABLE:
+ case NET_MAX:
+ assert(false);
+ } // no default case, so the compiler can warn about missing cases
+
+ // Serialize ONION, I2P and CJDNS as all-zeros.
+ memset(arr, 0x0, V1_SERIALIZATION_SIZE);
+ }
+
+ /**
+ * Serialize in pre-ADDRv2/BIP155 format to a stream.
+ */
+ template <typename Stream>
+ void SerializeV1Stream(Stream& s) const
+ {
+ uint8_t serialized[V1_SERIALIZATION_SIZE];
+
+ SerializeV1Array(serialized);
+
+ s << serialized;
+ }
+
+ /**
+ * Serialize as ADDRv2 / BIP155.
+ */
+ template <typename Stream>
+ void SerializeV2Stream(Stream& s) const
+ {
+ if (IsInternal()) {
+ // Serialize NET_INTERNAL as embedded in IPv6. We need to
+ // serialize such addresses from addrman.
+ s << static_cast<uint8_t>(BIP155Network::IPV6);
+ s << COMPACTSIZE(ADDR_IPV6_SIZE);
+ SerializeV1Stream(s);
+ return;
}
- friend class CSubNet;
-
- private:
- /**
- * Parse a Tor address and set this object to it.
- * @param[in] addr Address to parse, must be a valid C string, for example
- * pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion.
- * @returns Whether the operation was successful.
- * @see CNetAddr::IsTor()
- */
- bool SetTor(const std::string& addr);
-
- /**
- * Parse an I2P address and set this object to it.
- * @param[in] addr Address to parse, must be a valid C string, for example
- * ukeu3k5oycgaauneqgtnvselmt4yemvoilkln7jpvamvfx7dnkdq.b32.i2p.
- * @returns Whether the operation was successful.
- * @see CNetAddr::IsI2P()
- */
- bool SetI2P(const std::string& addr);
-
- /**
- * BIP155 network ids recognized by this software.
- */
- enum BIP155Network : uint8_t {
- IPV4 = 1,
- IPV6 = 2,
- TORV2 = 3,
- TORV3 = 4,
- I2P = 5,
- CJDNS = 6,
- };
-
- /**
- * Size of CNetAddr when serialized as ADDRv1 (pre-BIP155) (in bytes).
- */
- static constexpr size_t V1_SERIALIZATION_SIZE = ADDR_IPV6_SIZE;
-
- /**
- * Maximum size of an address as defined in BIP155 (in bytes).
- * This is only the size of the address, not the entire CNetAddr object
- * when serialized.
- */
- static constexpr size_t MAX_ADDRV2_SIZE = 512;
-
- /**
- * Get the BIP155 network id of this address.
- * Must not be called for IsInternal() objects.
- * @returns BIP155 network id, except TORV2 which is no longer supported.
- */
- BIP155Network GetBIP155Network() const;
-
- /**
- * Set `m_net` from the provided BIP155 network id and size after validation.
- * @retval true the network was recognized, is valid and `m_net` was set
- * @retval false not recognised (from future?) and should be silently ignored
- * @throws std::ios_base::failure if the network is one of the BIP155 founding
- * networks (id 1..6) with wrong address size.
- */
- bool SetNetFromBIP155Network(uint8_t possible_bip155_net, size_t address_size);
-
- /**
- * Serialize in pre-ADDRv2/BIP155 format to an array.
- */
- void SerializeV1Array(uint8_t (&arr)[V1_SERIALIZATION_SIZE]) const
- {
- size_t prefix_size;
-
- switch (m_net) {
- case NET_IPV6:
- assert(m_addr.size() == sizeof(arr));
- memcpy(arr, m_addr.data(), m_addr.size());
- return;
- case NET_IPV4:
- prefix_size = sizeof(IPV4_IN_IPV6_PREFIX);
- assert(prefix_size + m_addr.size() == sizeof(arr));
- memcpy(arr, IPV4_IN_IPV6_PREFIX.data(), prefix_size);
- memcpy(arr + prefix_size, m_addr.data(), m_addr.size());
- return;
- case NET_INTERNAL:
- prefix_size = sizeof(INTERNAL_IN_IPV6_PREFIX);
- assert(prefix_size + m_addr.size() == sizeof(arr));
- memcpy(arr, INTERNAL_IN_IPV6_PREFIX.data(), prefix_size);
- memcpy(arr + prefix_size, m_addr.data(), m_addr.size());
- return;
- case NET_ONION:
- case NET_I2P:
- case NET_CJDNS:
- break;
- case NET_UNROUTABLE:
- case NET_MAX:
- assert(false);
- } // no default case, so the compiler can warn about missing cases
-
- // Serialize ONION, I2P and CJDNS as all-zeros.
- memset(arr, 0x0, V1_SERIALIZATION_SIZE);
+ s << static_cast<uint8_t>(GetBIP155Network());
+ s << m_addr;
+ }
+
+ /**
+ * Unserialize from a pre-ADDRv2/BIP155 format from an array.
+ */
+ void UnserializeV1Array(uint8_t (&arr)[V1_SERIALIZATION_SIZE])
+ {
+ // Use SetLegacyIPv6() so that m_net is set correctly. For example
+ // ::FFFF:0102:0304 should be set as m_net=NET_IPV4 (1.2.3.4).
+ SetLegacyIPv6(arr);
+ }
+
+ /**
+ * Unserialize from a pre-ADDRv2/BIP155 format from a stream.
+ */
+ template <typename Stream>
+ void UnserializeV1Stream(Stream& s)
+ {
+ uint8_t serialized[V1_SERIALIZATION_SIZE];
+
+ s >> serialized;
+
+ UnserializeV1Array(serialized);
+ }
+
+ /**
+ * Unserialize from a ADDRv2 / BIP155 format.
+ */
+ template <typename Stream>
+ void UnserializeV2Stream(Stream& s)
+ {
+ uint8_t bip155_net;
+ s >> bip155_net;
+
+ size_t address_size;
+ s >> COMPACTSIZE(address_size);
+
+ if (address_size > MAX_ADDRV2_SIZE) {
+ throw std::ios_base::failure(strprintf(
+ "Address too long: %u > %u", address_size, MAX_ADDRV2_SIZE));
}
- /**
- * Serialize in pre-ADDRv2/BIP155 format to a stream.
- */
- template <typename Stream>
- void SerializeV1Stream(Stream& s) const
- {
- uint8_t serialized[V1_SERIALIZATION_SIZE];
+ m_scope_id = 0;
- SerializeV1Array(serialized);
+ if (SetNetFromBIP155Network(bip155_net, address_size)) {
+ m_addr.resize(address_size);
+ s >> MakeSpan(m_addr);
- s << serialized;
- }
-
- /**
- * Serialize as ADDRv2 / BIP155.
- */
- template <typename Stream>
- void SerializeV2Stream(Stream& s) const
- {
- if (IsInternal()) {
- // Serialize NET_INTERNAL as embedded in IPv6. We need to
- // serialize such addresses from addrman.
- s << static_cast<uint8_t>(BIP155Network::IPV6);
- s << COMPACTSIZE(ADDR_IPV6_SIZE);
- SerializeV1Stream(s);
+ if (m_net != NET_IPV6) {
return;
}
- s << static_cast<uint8_t>(GetBIP155Network());
- s << m_addr;
- }
-
- /**
- * Unserialize from a pre-ADDRv2/BIP155 format from an array.
- */
- void UnserializeV1Array(uint8_t (&arr)[V1_SERIALIZATION_SIZE])
- {
- // Use SetLegacyIPv6() so that m_net is set correctly. For example
- // ::FFFF:0102:0304 should be set as m_net=NET_IPV4 (1.2.3.4).
- SetLegacyIPv6(arr);
- }
-
- /**
- * Unserialize from a pre-ADDRv2/BIP155 format from a stream.
- */
- template <typename Stream>
- void UnserializeV1Stream(Stream& s)
- {
- uint8_t serialized[V1_SERIALIZATION_SIZE];
-
- s >> serialized;
-
- UnserializeV1Array(serialized);
- }
+ // Do some special checks on IPv6 addresses.
- /**
- * Unserialize from a ADDRv2 / BIP155 format.
- */
- template <typename Stream>
- void UnserializeV2Stream(Stream& s)
- {
- uint8_t bip155_net;
- s >> bip155_net;
-
- size_t address_size;
- s >> COMPACTSIZE(address_size);
-
- if (address_size > MAX_ADDRV2_SIZE) {
- throw std::ios_base::failure(strprintf(
- "Address too long: %u > %u", address_size, MAX_ADDRV2_SIZE));
+ // Recognize NET_INTERNAL embedded in IPv6, such addresses are not
+ // gossiped but could be coming from addrman, when unserializing from
+ // disk.
+ if (HasPrefix(m_addr, INTERNAL_IN_IPV6_PREFIX)) {
+ m_net = NET_INTERNAL;
+ memmove(m_addr.data(), m_addr.data() + INTERNAL_IN_IPV6_PREFIX.size(),
+ ADDR_INTERNAL_SIZE);
+ m_addr.resize(ADDR_INTERNAL_SIZE);
+ return;
}
- m_scope_id = 0;
-
- if (SetNetFromBIP155Network(bip155_net, address_size)) {
- m_addr.resize(address_size);
- s >> MakeSpan(m_addr);
-
- if (m_net != NET_IPV6) {
- return;
- }
-
- // Do some special checks on IPv6 addresses.
-
- // Recognize NET_INTERNAL embedded in IPv6, such addresses are not
- // gossiped but could be coming from addrman, when unserializing from
- // disk.
- if (HasPrefix(m_addr, INTERNAL_IN_IPV6_PREFIX)) {
- m_net = NET_INTERNAL;
- memmove(m_addr.data(), m_addr.data() + INTERNAL_IN_IPV6_PREFIX.size(),
- ADDR_INTERNAL_SIZE);
- m_addr.resize(ADDR_INTERNAL_SIZE);
- return;
- }
-
- if (!HasPrefix(m_addr, IPV4_IN_IPV6_PREFIX) &&
- !HasPrefix(m_addr, TORV2_IN_IPV6_PREFIX)) {
- return;
- }
-
- // IPv4 and TORv2 are not supposed to be embedded in IPv6 (like in V1
- // encoding). Unserialize as !IsValid(), thus ignoring them.
- } else {
- // If we receive an unknown BIP155 network id (from the future?) then
- // ignore the address - unserialize as !IsValid().
- s.ignore(address_size);
+ if (!HasPrefix(m_addr, IPV4_IN_IPV6_PREFIX) &&
+ !HasPrefix(m_addr, TORV2_IN_IPV6_PREFIX)) {
+ return;
}
- // Mimic a default-constructed CNetAddr object which is !IsValid() and thus
- // will not be gossiped, but continue reading next addresses from the stream.
- m_net = NET_IPV6;
- m_addr.assign(ADDR_IPV6_SIZE, 0x0);
+ // IPv4 and TORv2 are not supposed to be embedded in IPv6 (like in V1
+ // encoding). Unserialize as !IsValid(), thus ignoring them.
+ } else {
+ // If we receive an unknown BIP155 network id (from the future?) then
+ // ignore the address - unserialize as !IsValid().
+ s.ignore(address_size);
}
+
+ // Mimic a default-constructed CNetAddr object which is !IsValid() and thus
+ // will not be gossiped, but continue reading next addresses from the stream.
+ m_net = NET_IPV6;
+ m_addr.assign(ADDR_IPV6_SIZE, 0x0);
+ }
+};
+
+class CNetAddrHash
+{
+public:
+ size_t operator()(const CNetAddr& a) const noexcept
+ {
+ CSipHasher hasher(m_salt_k0, m_salt_k1);
+ hasher.Write(a.m_net);
+ hasher.Write(a.m_addr.data(), a.m_addr.size());
+ return static_cast<size_t>(hasher.Finalize());
+ }
+
+private:
+ const uint64_t m_salt_k0 = GetRand(std::numeric_limits<uint64_t>::max());
+ const uint64_t m_salt_k1 = GetRand(std::numeric_limits<uint64_t>::max());
};
class CSubNet
{
- protected:
- /// Network (base) address
- CNetAddr network;
- /// Netmask, in network byte order
- uint8_t netmask[16];
- /// Is this value valid? (only used to signal parse errors)
- bool valid;
-
- bool SanityCheck() const;
-
- public:
- /**
- * Construct an invalid subnet (empty, `Match()` always returns false).
- */
- CSubNet();
-
- /**
- * Construct from a given network start and number of bits (CIDR mask).
- * @param[in] addr Network start. Must be IPv4 or IPv6, otherwise an invalid subnet is
- * created.
- * @param[in] mask CIDR mask, must be in [0, 32] for IPv4 addresses and in [0, 128] for
- * IPv6 addresses. Otherwise an invalid subnet is created.
- */
- CSubNet(const CNetAddr& addr, uint8_t mask);
-
- /**
- * Construct from a given network start and mask.
- * @param[in] addr Network start. Must be IPv4 or IPv6, otherwise an invalid subnet is
- * created.
- * @param[in] mask Network mask, must be of the same type as `addr` and not contain 0-bits
- * followed by 1-bits. Otherwise an invalid subnet is created.
- */
- CSubNet(const CNetAddr& addr, const CNetAddr& mask);
-
- /**
- * Construct a single-host subnet.
- * @param[in] addr The sole address to be contained in the subnet, can also be non-IPv[46].
- */
- explicit CSubNet(const CNetAddr& addr);
-
- bool Match(const CNetAddr &addr) const;
-
- std::string ToString() const;
- bool IsValid() const;
-
- friend bool operator==(const CSubNet& a, const CSubNet& b);
- friend bool operator!=(const CSubNet& a, const CSubNet& b) { return !(a == b); }
- friend bool operator<(const CSubNet& a, const CSubNet& b);
-
- SERIALIZE_METHODS(CSubNet, obj)
- {
- READWRITE(obj.network);
- if (obj.network.IsIPv4()) {
- // Before commit 102867c587f5f7954232fb8ed8e85cda78bb4d32, CSubNet used the last 4 bytes of netmask
- // to store the relevant bytes for an IPv4 mask. For compatibility reasons, keep doing so in
- // serialized form.
- unsigned char dummy[12] = {0};
- READWRITE(dummy);
- READWRITE(MakeSpan(obj.netmask).first(4));
- } else {
- READWRITE(obj.netmask);
- }
- READWRITE(obj.valid);
- // Mark invalid if the result doesn't pass sanity checking.
- SER_READ(obj, if (obj.valid) obj.valid = obj.SanityCheck());
- }
+protected:
+ /// Network (base) address
+ CNetAddr network;
+ /// Netmask, in network byte order
+ uint8_t netmask[16];
+ /// Is this value valid? (only used to signal parse errors)
+ bool valid;
+
+ bool SanityCheck() const;
+
+public:
+ /**
+ * Construct an invalid subnet (empty, `Match()` always returns false).
+ */
+ CSubNet();
+
+ /**
+ * Construct from a given network start and number of bits (CIDR mask).
+ * @param[in] addr Network start. Must be IPv4 or IPv6, otherwise an invalid subnet is
+ * created.
+ * @param[in] mask CIDR mask, must be in [0, 32] for IPv4 addresses and in [0, 128] for
+ * IPv6 addresses. Otherwise an invalid subnet is created.
+ */
+ CSubNet(const CNetAddr& addr, uint8_t mask);
+
+ /**
+ * Construct from a given network start and mask.
+ * @param[in] addr Network start. Must be IPv4 or IPv6, otherwise an invalid subnet is
+ * created.
+ * @param[in] mask Network mask, must be of the same type as `addr` and not contain 0-bits
+ * followed by 1-bits. Otherwise an invalid subnet is created.
+ */
+ CSubNet(const CNetAddr& addr, const CNetAddr& mask);
+
+ /**
+ * Construct a single-host subnet.
+ * @param[in] addr The sole address to be contained in the subnet, can also be non-IPv[46].
+ */
+ explicit CSubNet(const CNetAddr& addr);
+
+ bool Match(const CNetAddr& addr) const;
+
+ std::string ToString() const;
+ bool IsValid() const;
+
+ friend bool operator==(const CSubNet& a, const CSubNet& b);
+ friend bool operator!=(const CSubNet& a, const CSubNet& b) { return !(a == b); }
+ friend bool operator<(const CSubNet& a, const CSubNet& b);
};
/** A combination of a network address (CNetAddr) and a (TCP) port */
class CService : public CNetAddr
{
- protected:
- uint16_t port; // host order
-
- public:
- CService();
- CService(const CNetAddr& ip, uint16_t port);
- CService(const struct in_addr& ipv4Addr, uint16_t port);
- explicit CService(const struct sockaddr_in& addr);
- uint16_t GetPort() const;
- bool GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const;
- bool SetSockAddr(const struct sockaddr* paddr);
- friend bool operator==(const CService& a, const CService& b);
- friend bool operator!=(const CService& a, const CService& b) { return !(a == b); }
- friend bool operator<(const CService& a, const CService& b);
- std::vector<unsigned char> GetKey() const;
- std::string ToString() const;
- std::string ToStringPort() const;
- std::string ToStringIPPort() const;
-
- CService(const struct in6_addr& ipv6Addr, uint16_t port);
- explicit CService(const struct sockaddr_in6& addr);
-
- SERIALIZE_METHODS(CService, obj)
- {
- READWRITEAS(CNetAddr, obj);
- READWRITE(Using<BigEndianFormatter<2>>(obj.port));
- }
+protected:
+ uint16_t port; // host order
+
+public:
+ CService();
+ CService(const CNetAddr& ip, uint16_t port);
+ CService(const struct in_addr& ipv4Addr, uint16_t port);
+ explicit CService(const struct sockaddr_in& addr);
+ uint16_t GetPort() const;
+ bool GetSockAddr(struct sockaddr* paddr, socklen_t* addrlen) const;
+ bool SetSockAddr(const struct sockaddr* paddr);
+ friend bool operator==(const CService& a, const CService& b);
+ friend bool operator!=(const CService& a, const CService& b) { return !(a == b); }
+ friend bool operator<(const CService& a, const CService& b);
+ std::vector<unsigned char> GetKey() const;
+ std::string ToString() const;
+ std::string ToStringPort() const;
+ std::string ToStringIPPort() const;
+
+ CService(const struct in6_addr& ipv6Addr, uint16_t port);
+ explicit CService(const struct sockaddr_in6& addr);
+
+ SERIALIZE_METHODS(CService, obj)
+ {
+ READWRITEAS(CNetAddr, obj);
+ READWRITE(Using<BigEndianFormatter<2>>(obj.port));
+ }
};
-bool SanityCheckASMap(const std::vector<bool>& asmap);
-
#endif // BITCOIN_NETADDRESS_H
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-09 14:53:16 +0000