aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--doc/release-notes.md4
-rw-r--r--src/netaddress.cpp467
-rw-r--r--src/netaddress.h156
-rw-r--r--src/netbase.cpp5
-rw-r--r--src/test/fuzz/asmap.cpp14
-rw-r--r--src/test/fuzz/netaddress.cpp5
-rw-r--r--src/test/fuzz/util.h2
-rw-r--r--src/test/net_tests.cpp74
-rw-r--r--src/test/netbase_tests.cpp17
-rw-r--r--src/util/strencodings.cpp12
-rw-r--r--src/util/strencodings.h7
11 files changed, 496 insertions, 267 deletions
diff --git a/doc/release-notes.md b/doc/release-notes.md
index 4656963f5a..a8bd68370d 100644
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -139,6 +139,10 @@ Updated settings
in future releases. Refer to the help of the affected settings `-whitebind`
and `-whitelist` for more details. (#19191)
+- Netmasks that contain 1-bits after 0-bits (the 1-bits are not contiguous on
+ the left side, e.g. 255.0.255.255) are no longer accepted. They are invalid
+ according to RFC 4632.
+
Changes to Wallet or GUI related settings can be found in the GUI or Wallet section below.
Tools and Utilities
diff --git a/src/netaddress.cpp b/src/netaddress.cpp
index d29aed6c8b..cb874e5e31 100644
--- a/src/netaddress.cpp
+++ b/src/netaddress.cpp
@@ -3,79 +3,90 @@
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-#include <cstdint>
#include <netaddress.h>
#include <hash.h>
#include <util/strencodings.h>
#include <util/asmap.h>
#include <tinyformat.h>
-static const unsigned char pchIPv4[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff };
-static const unsigned char pchOnionCat[] = {0xFD,0x87,0xD8,0x7E,0xEB,0x43};
+#include <algorithm>
+#include <array>
+#include <cstdint>
+#include <iterator>
+#include <tuple>
-// 0xFD + sha256("bitcoin")[0:5]
-static const unsigned char g_internal_prefix[] = { 0xFD, 0x6B, 0x88, 0xC0, 0x87, 0x24 };
+constexpr size_t CNetAddr::V1_SERIALIZATION_SIZE;
/**
* Construct an unspecified IPv6 network address (::/128).
*
* @note This address is considered invalid by CNetAddr::IsValid()
*/
-CNetAddr::CNetAddr()
-{
- memset(ip, 0, sizeof(ip));
-}
+CNetAddr::CNetAddr() {}
void CNetAddr::SetIP(const CNetAddr& ipIn)
{
+ // Size check.
+ switch (ipIn.m_net) {
+ case NET_IPV4:
+ assert(ipIn.m_addr.size() == ADDR_IPV4_SIZE);
+ break;
+ case NET_IPV6:
+ assert(ipIn.m_addr.size() == ADDR_IPV6_SIZE);
+ break;
+ case NET_ONION:
+ assert(ipIn.m_addr.size() == ADDR_TORV2_SIZE);
+ break;
+ case NET_INTERNAL:
+ assert(ipIn.m_addr.size() == ADDR_INTERNAL_SIZE);
+ break;
+ case NET_UNROUTABLE:
+ case NET_MAX:
+ assert(false);
+ } // no default case, so the compiler can warn about missing cases
+
m_net = ipIn.m_net;
- memcpy(ip, ipIn.ip, sizeof(ip));
+ m_addr = ipIn.m_addr;
}
-void CNetAddr::SetLegacyIPv6(const uint8_t ipv6[16])
+template <typename T1, size_t PREFIX_LEN>
+inline bool HasPrefix(const T1& obj, const std::array<uint8_t, PREFIX_LEN>& prefix)
{
- if (memcmp(ipv6, pchIPv4, sizeof(pchIPv4)) == 0) {
+ return obj.size() >= PREFIX_LEN &&
+ std::equal(std::begin(prefix), std::end(prefix), std::begin(obj));
+}
+
+void CNetAddr::SetLegacyIPv6(Span<const uint8_t> ipv6)
+{
+ assert(ipv6.size() == ADDR_IPV6_SIZE);
+
+ size_t skip{0};
+
+ if (HasPrefix(ipv6, IPV4_IN_IPV6_PREFIX)) {
+ // IPv4-in-IPv6
m_net = NET_IPV4;
- } else if (memcmp(ipv6, pchOnionCat, sizeof(pchOnionCat)) == 0) {
+ skip = sizeof(IPV4_IN_IPV6_PREFIX);
+ } else if (HasPrefix(ipv6, TORV2_IN_IPV6_PREFIX)) {
+ // TORv2-in-IPv6
m_net = NET_ONION;
- } else if (memcmp(ipv6, g_internal_prefix, sizeof(g_internal_prefix)) == 0) {
+ skip = sizeof(TORV2_IN_IPV6_PREFIX);
+ } else if (HasPrefix(ipv6, INTERNAL_IN_IPV6_PREFIX)) {
+ // Internal-in-IPv6
m_net = NET_INTERNAL;
+ skip = sizeof(INTERNAL_IN_IPV6_PREFIX);
} else {
+ // IPv6
m_net = NET_IPV6;
}
- memcpy(ip, ipv6, 16);
-}
-void CNetAddr::SetRaw(Network network, const uint8_t *ip_in)
-{
- switch(network)
- {
- case NET_IPV4:
- m_net = NET_IPV4;
- memcpy(ip, pchIPv4, 12);
- memcpy(ip+12, ip_in, 4);
- break;
- case NET_IPV6:
- SetLegacyIPv6(ip_in);
- break;
- default:
- assert(!"invalid network");
- }
+ m_addr.assign(ipv6.begin() + skip, ipv6.end());
}
/**
- * Try to make this a dummy address that maps the specified name into IPv6 like
- * so: (0xFD + %sha256("bitcoin")[0:5]) + %sha256(name)[0:10]. Such dummy
- * addresses have a prefix of fd6b:88c0:8724::/48 and are guaranteed to not be
- * publicly routable as it falls under RFC4193's fc00::/7 subnet allocated to
- * unique-local addresses.
- *
- * CAddrMan uses these fake addresses to keep track of which DNS seeds were
- * used.
- *
+ * Create an "internal" address that represents a name or FQDN. CAddrMan uses
+ * these fake addresses to keep track of which DNS seeds were used.
* @returns Whether or not the operation was successful.
- *
- * @see CNetAddr::IsInternal(), CNetAddr::IsRFC4193()
+ * @see NET_INTERNAL, INTERNAL_IN_IPV6_PREFIX, CNetAddr::IsInternal(), CNetAddr::IsRFC4193()
*/
bool CNetAddr::SetInternal(const std::string &name)
{
@@ -85,31 +96,26 @@ bool CNetAddr::SetInternal(const std::string &name)
m_net = NET_INTERNAL;
unsigned char hash[32] = {};
CSHA256().Write((const unsigned char*)name.data(), name.size()).Finalize(hash);
- memcpy(ip, g_internal_prefix, sizeof(g_internal_prefix));
- memcpy(ip + sizeof(g_internal_prefix), hash, sizeof(ip) - sizeof(g_internal_prefix));
+ m_addr.assign(hash, hash + ADDR_INTERNAL_SIZE);
return true;
}
/**
- * Try to make this a dummy address that maps the specified onion address into
- * IPv6 using OnionCat's range and encoding. Such dummy addresses have a prefix
- * of fd87:d87e:eb43::/48 and are guaranteed to not be publicly routable as they
- * fall under RFC4193's fc00::/7 subnet allocated to unique-local addresses.
+ * Parse a TORv2 address and set this object to it.
*
* @returns Whether or not the operation was successful.
*
- * @see CNetAddr::IsTor(), CNetAddr::IsRFC4193()
+ * @see CNetAddr::IsTor()
*/
bool CNetAddr::SetSpecial(const std::string &strName)
{
if (strName.size()>6 && strName.substr(strName.size() - 6, 6) == ".onion") {
std::vector<unsigned char> vchAddr = DecodeBase32(strName.substr(0, strName.size() - 6).c_str());
- if (vchAddr.size() != 16-sizeof(pchOnionCat))
+ if (vchAddr.size() != ADDR_TORV2_SIZE) {
return false;
+ }
m_net = NET_ONION;
- memcpy(ip, pchOnionCat, sizeof(pchOnionCat));
- for (unsigned int i=0; i<16-sizeof(pchOnionCat); i++)
- ip[i + sizeof(pchOnionCat)] = vchAddr[i];
+ m_addr.assign(vchAddr.begin(), vchAddr.end());
return true;
}
return false;
@@ -117,28 +123,23 @@ bool CNetAddr::SetSpecial(const std::string &strName)
CNetAddr::CNetAddr(const struct in_addr& ipv4Addr)
{
- SetRaw(NET_IPV4, (const uint8_t*)&ipv4Addr);
+ m_net = NET_IPV4;
+ const uint8_t* ptr = reinterpret_cast<const uint8_t*>(&ipv4Addr);
+ m_addr.assign(ptr, ptr + ADDR_IPV4_SIZE);
}
CNetAddr::CNetAddr(const struct in6_addr& ipv6Addr, const uint32_t scope)
{
- SetRaw(NET_IPV6, (const uint8_t*)&ipv6Addr);
+ SetLegacyIPv6(Span<const uint8_t>(reinterpret_cast<const uint8_t*>(&ipv6Addr), sizeof(ipv6Addr)));
scopeId = scope;
}
-unsigned int CNetAddr::GetByte(int n) const
-{
- return ip[15-n];
-}
-
bool CNetAddr::IsBindAny() const
{
- const int cmplen = IsIPv4() ? 4 : 16;
- for (int i = 0; i < cmplen; ++i) {
- if (GetByte(i)) return false;
+ if (!IsIPv4() && !IsIPv6()) {
+ return false;
}
-
- return true;
+ return std::all_of(m_addr.begin(), m_addr.end(), [](uint8_t b) { return b == 0; });
}
bool CNetAddr::IsIPv4() const { return m_net == NET_IPV4; }
@@ -148,88 +149,88 @@ bool CNetAddr::IsIPv6() const { return m_net == NET_IPV6; }
bool CNetAddr::IsRFC1918() const
{
return IsIPv4() && (
- GetByte(3) == 10 ||
- (GetByte(3) == 192 && GetByte(2) == 168) ||
- (GetByte(3) == 172 && (GetByte(2) >= 16 && GetByte(2) <= 31)));
+ m_addr[0] == 10 ||
+ (m_addr[0] == 192 && m_addr[1] == 168) ||
+ (m_addr[0] == 172 && m_addr[1] >= 16 && m_addr[1] <= 31));
}
bool CNetAddr::IsRFC2544() const
{
- return IsIPv4() && GetByte(3) == 198 && (GetByte(2) == 18 || GetByte(2) == 19);
+ return IsIPv4() && m_addr[0] == 198 && (m_addr[1] == 18 || m_addr[1] == 19);
}
bool CNetAddr::IsRFC3927() const
{
- return IsIPv4() && (GetByte(3) == 169 && GetByte(2) == 254);
+ return IsIPv4() && HasPrefix(m_addr, std::array<uint8_t, 2>{169, 254});
}
bool CNetAddr::IsRFC6598() const
{
- return IsIPv4() && GetByte(3) == 100 && GetByte(2) >= 64 && GetByte(2) <= 127;
+ return IsIPv4() && m_addr[0] == 100 && m_addr[1] >= 64 && m_addr[1] <= 127;
}
bool CNetAddr::IsRFC5737() const
{
- return IsIPv4() && ((GetByte(3) == 192 && GetByte(2) == 0 && GetByte(1) == 2) ||
- (GetByte(3) == 198 && GetByte(2) == 51 && GetByte(1) == 100) ||
- (GetByte(3) == 203 && GetByte(2) == 0 && GetByte(1) == 113));
+ return IsIPv4() && (HasPrefix(m_addr, std::array<uint8_t, 3>{192, 0, 2}) ||
+ HasPrefix(m_addr, std::array<uint8_t, 3>{198, 51, 100}) ||
+ HasPrefix(m_addr, std::array<uint8_t, 3>{203, 0, 113}));
}
bool CNetAddr::IsRFC3849() const
{
- return IsIPv6() && GetByte(15) == 0x20 && GetByte(14) == 0x01 &&
- GetByte(13) == 0x0D && GetByte(12) == 0xB8;
+ return IsIPv6() && HasPrefix(m_addr, std::array<uint8_t, 4>{0x20, 0x01, 0x0D, 0xB8});
}
bool CNetAddr::IsRFC3964() const
{
- return IsIPv6() && GetByte(15) == 0x20 && GetByte(14) == 0x02;
+ return IsIPv6() && HasPrefix(m_addr, std::array<uint8_t, 2>{0x20, 0x02});
}
bool CNetAddr::IsRFC6052() const
{
- static const unsigned char pchRFC6052[] = {0,0x64,0xFF,0x9B,0,0,0,0,0,0,0,0};
- return IsIPv6() && memcmp(ip, pchRFC6052, sizeof(pchRFC6052)) == 0;
+ return IsIPv6() &&
+ HasPrefix(m_addr, std::array<uint8_t, 12>{0x00, 0x64, 0xFF, 0x9B, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00});
}
bool CNetAddr::IsRFC4380() const
{
- return IsIPv6() && GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0 &&
- GetByte(12) == 0;
+ return IsIPv6() && HasPrefix(m_addr, std::array<uint8_t, 4>{0x20, 0x01, 0x00, 0x00});
}
bool CNetAddr::IsRFC4862() const
{
- static const unsigned char pchRFC4862[] = {0xFE,0x80,0,0,0,0,0,0};
- return IsIPv6() && memcmp(ip, pchRFC4862, sizeof(pchRFC4862)) == 0;
+ return IsIPv6() && HasPrefix(m_addr, std::array<uint8_t, 8>{0xFE, 0x80, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00});
}
bool CNetAddr::IsRFC4193() const
{
- return IsIPv6() && (GetByte(15) & 0xFE) == 0xFC;
+ return IsIPv6() && (m_addr[0] & 0xFE) == 0xFC;
}
bool CNetAddr::IsRFC6145() const
{
- static const unsigned char pchRFC6145[] = {0,0,0,0,0,0,0,0,0xFF,0xFF,0,0};
- return IsIPv6() && memcmp(ip, pchRFC6145, sizeof(pchRFC6145)) == 0;
+ return IsIPv6() &&
+ HasPrefix(m_addr, std::array<uint8_t, 12>{0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00});
}
bool CNetAddr::IsRFC4843() const
{
- return IsIPv6() && GetByte(15) == 0x20 && GetByte(14) == 0x01 &&
- GetByte(13) == 0x00 && (GetByte(12) & 0xF0) == 0x10;
+ return IsIPv6() && HasPrefix(m_addr, std::array<uint8_t, 3>{0x20, 0x01, 0x00}) &&
+ (m_addr[3] & 0xF0) == 0x10;
}
bool CNetAddr::IsRFC7343() const
{
- return IsIPv6() && GetByte(15) == 0x20 && GetByte(14) == 0x01 &&
- GetByte(13) == 0x00 && (GetByte(12) & 0xF0) == 0x20;
+ return IsIPv6() && HasPrefix(m_addr, std::array<uint8_t, 3>{0x20, 0x01, 0x00}) &&
+ (m_addr[3] & 0xF0) == 0x20;
}
bool CNetAddr::IsHeNet() const
{
- return (GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x04 && GetByte(12) == 0x70);
+ return IsIPv6() && HasPrefix(m_addr, std::array<uint8_t, 4>{0x20, 0x01, 0x04, 0x70});
}
/**
@@ -243,13 +244,15 @@ bool CNetAddr::IsTor() const { return m_net == NET_ONION; }
bool CNetAddr::IsLocal() const
{
// IPv4 loopback (127.0.0.0/8 or 0.0.0.0/8)
- if (IsIPv4() && (GetByte(3) == 127 || GetByte(3) == 0))
+ if (IsIPv4() && (m_addr[0] == 127 || m_addr[0] == 0)) {
return true;
+ }
// IPv6 loopback (::1/128)
static const unsigned char pchLocal[16] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1};
- if (IsIPv6() && memcmp(ip, pchLocal, 16) == 0)
+ if (IsIPv6() && memcmp(m_addr.data(), pchLocal, sizeof(pchLocal)) == 0) {
return true;
+ }
return false;
}
@@ -272,13 +275,16 @@ bool CNetAddr::IsValid() const
// header20 vectorlen3 addr26 addr26 addr26 header20 vectorlen3 addr26 addr26 addr26...
// so if the first length field is garbled, it reads the second batch
// of addr misaligned by 3 bytes.
- if (IsIPv6() && memcmp(ip, pchIPv4+3, sizeof(pchIPv4)-3) == 0)
+ if (IsIPv6() && memcmp(m_addr.data(), IPV4_IN_IPV6_PREFIX.data() + 3,
+ sizeof(IPV4_IN_IPV6_PREFIX) - 3) == 0) {
return false;
+ }
// unspecified IPv6 address (::/128)
unsigned char ipNone6[16] = {};
- if (IsIPv6() && memcmp(ip, ipNone6, 16) == 0)
+ if (IsIPv6() && memcmp(m_addr.data(), ipNone6, sizeof(ipNone6)) == 0) {
return false;
+ }
// documentation IPv6 address
if (IsRFC3849())
@@ -287,17 +293,11 @@ bool CNetAddr::IsValid() const
if (IsInternal())
return false;
- if (IsIPv4())
- {
- // INADDR_NONE
- uint32_t ipNone = INADDR_NONE;
- if (memcmp(ip+12, &ipNone, 4) == 0)
- return false;
-
- // 0
- ipNone = 0;
- if (memcmp(ip+12, &ipNone, 4) == 0)
+ if (IsIPv4()) {
+ const uint32_t addr = ReadBE32(m_addr.data());
+ if (addr == INADDR_ANY || addr == INADDR_NONE) {
return false;
+ }
}
return true;
@@ -318,7 +318,7 @@ bool CNetAddr::IsRoutable() const
}
/**
- * @returns Whether or not this is a dummy address that maps a name into IPv6.
+ * @returns Whether or not this is a dummy address that represents a name.
*
* @see CNetAddr::SetInternal(const std::string &)
*/
@@ -341,9 +341,9 @@ enum Network CNetAddr::GetNetwork() const
std::string CNetAddr::ToStringIP() const
{
if (IsTor())
- return EncodeBase32(&ip[6], 10) + ".onion";
+ return EncodeBase32(m_addr.data(), m_addr.size()) + ".onion";
if (IsInternal())
- return EncodeBase32(ip + sizeof(g_internal_prefix), sizeof(ip) - sizeof(g_internal_prefix)) + ".internal";
+ return EncodeBase32(m_addr.data(), m_addr.size()) + ".internal";
CService serv(*this, 0);
struct sockaddr_storage sockaddr;
socklen_t socklen = sizeof(sockaddr);
@@ -353,13 +353,13 @@ std::string CNetAddr::ToStringIP() const
return std::string(name);
}
if (IsIPv4())
- return strprintf("%u.%u.%u.%u", GetByte(3), GetByte(2), GetByte(1), GetByte(0));
- else
- return strprintf("%x:%x:%x:%x:%x:%x:%x:%x",
- GetByte(15) << 8 | GetByte(14), GetByte(13) << 8 | GetByte(12),
- GetByte(11) << 8 | GetByte(10), GetByte(9) << 8 | GetByte(8),
- GetByte(7) << 8 | GetByte(6), GetByte(5) << 8 | GetByte(4),
- GetByte(3) << 8 | GetByte(2), GetByte(1) << 8 | GetByte(0));
+ return strprintf("%u.%u.%u.%u", m_addr[0], m_addr[1], m_addr[2], m_addr[3]);
+ assert(IsIPv6());
+ return strprintf("%x:%x:%x:%x:%x:%x:%x:%x",
+ m_addr[0] << 8 | m_addr[1], m_addr[2] << 8 | m_addr[3],
+ m_addr[4] << 8 | m_addr[5], m_addr[6] << 8 | m_addr[7],
+ m_addr[8] << 8 | m_addr[9], m_addr[10] << 8 | m_addr[11],
+ m_addr[12] << 8 | m_addr[13], m_addr[14] << 8 | m_addr[15]);
}
std::string CNetAddr::ToString() const
@@ -369,12 +369,12 @@ std::string CNetAddr::ToString() const
bool operator==(const CNetAddr& a, const CNetAddr& b)
{
- return a.m_net == b.m_net && memcmp(a.ip, b.ip, 16) == 0;
+ return a.m_net == b.m_net && a.m_addr == b.m_addr;
}
bool operator<(const CNetAddr& a, const CNetAddr& b)
{
- return a.m_net < b.m_net || (a.m_net == b.m_net && memcmp(a.ip, b.ip, 16) < 0);
+ return std::tie(a.m_net, a.m_addr) < std::tie(b.m_net, b.m_addr);
}
/**
@@ -391,7 +391,8 @@ bool CNetAddr::GetInAddr(struct in_addr* pipv4Addr) const
{
if (!IsIPv4())
return false;
- memcpy(pipv4Addr, ip+12, 4);
+ assert(sizeof(*pipv4Addr) == m_addr.size());
+ memcpy(pipv4Addr, m_addr.data(), m_addr.size());
return true;
}
@@ -410,7 +411,8 @@ bool CNetAddr::GetIn6Addr(struct in6_addr* pipv6Addr) const
if (!IsIPv6()) {
return false;
}
- memcpy(pipv6Addr, ip, 16);
+ assert(sizeof(*pipv6Addr) == m_addr.size());
+ memcpy(pipv6Addr, m_addr.data(), m_addr.size());
return true;
}
@@ -421,15 +423,17 @@ bool CNetAddr::HasLinkedIPv4() const
uint32_t CNetAddr::GetLinkedIPv4() const
{
- if (IsIPv4() || IsRFC6145() || IsRFC6052()) {
- // IPv4, mapped IPv4, SIIT translated IPv4: the IPv4 address is the last 4 bytes of the address
- return ReadBE32(ip + 12);
+ if (IsIPv4()) {
+ return ReadBE32(m_addr.data());
+ } else if (IsRFC6052() || IsRFC6145()) {
+ // mapped IPv4, SIIT translated IPv4: the IPv4 address is the last 4 bytes of the address
+ return ReadBE32(MakeSpan(m_addr).last(ADDR_IPV4_SIZE).data());
} else if (IsRFC3964()) {
// 6to4 tunneled IPv4: the IPv4 address is in bytes 2-6
- return ReadBE32(ip + 2);
+ return ReadBE32(MakeSpan(m_addr).subspan(2, ADDR_IPV4_SIZE).data());
} else if (IsRFC4380()) {
// Teredo tunneled IPv4: the IPv4 address is in the last 4 bytes of the address, but bitflipped
- return ~ReadBE32(ip + 12);
+ return ~ReadBE32(MakeSpan(m_addr).last(ADDR_IPV4_SIZE).data());
}
assert(false);
}
@@ -458,10 +462,10 @@ uint32_t CNetAddr::GetMappedAS(const std::vector<bool> &asmap) const {
}
std::vector<bool> ip_bits(128);
if (HasLinkedIPv4()) {
- // For lookup, treat as if it was just an IPv4 address (pchIPv4 prefix + IPv4 bits)
+ // For lookup, treat as if it was just an IPv4 address (IPV4_IN_IPV6_PREFIX + IPv4 bits)
for (int8_t byte_i = 0; byte_i < 12; ++byte_i) {
for (uint8_t bit_i = 0; bit_i < 8; ++bit_i) {
- ip_bits[byte_i * 8 + bit_i] = (pchIPv4[byte_i] >> (7 - bit_i)) & 1;
+ ip_bits[byte_i * 8 + bit_i] = (IPV4_IN_IPV6_PREFIX[byte_i] >> (7 - bit_i)) & 1;
}
}
uint32_t ipv4 = GetLinkedIPv4();
@@ -470,8 +474,9 @@ uint32_t CNetAddr::GetMappedAS(const std::vector<bool> &asmap) const {
}
} else {
// Use all 128 bits of the IPv6 address otherwise
+ assert(IsIPv6());
for (int8_t byte_i = 0; byte_i < 16; ++byte_i) {
- uint8_t cur_byte = GetByte(15 - byte_i);
+ uint8_t cur_byte = m_addr[byte_i];
for (uint8_t bit_i = 0; bit_i < 8; ++bit_i) {
ip_bits[byte_i * 8 + bit_i] = (cur_byte >> (7 - bit_i)) & 1;
}
@@ -507,19 +512,15 @@ std::vector<unsigned char> CNetAddr::GetGroup(const std::vector<bool> &asmap) co
}
vchRet.push_back(net_class);
- int nStartByte = 0;
- int nBits = 16;
+ int nBits{0};
if (IsLocal()) {
// all local addresses belong to the same group
- nBits = 0;
} else if (IsInternal()) {
// all internal-usage addresses get their own group
- nStartByte = sizeof(g_internal_prefix);
- nBits = (sizeof(ip) - sizeof(g_internal_prefix)) * 8;
+ nBits = ADDR_INTERNAL_SIZE * 8;
} else if (!IsRoutable()) {
// all other unroutable addresses belong to the same group
- nBits = 0;
} else if (HasLinkedIPv4()) {
// IPv4 addresses (and mapped IPv4 addresses) use /16 groups
uint32_t ipv4 = GetLinkedIPv4();
@@ -527,7 +528,6 @@ std::vector<unsigned char> CNetAddr::GetGroup(const std::vector<bool> &asmap) co
vchRet.push_back((ipv4 >> 16) & 0xFF);
return vchRet;
} else if (IsTor()) {
- nStartByte = 6;
nBits = 4;
} else if (IsHeNet()) {
// for he.net, use /36 groups
@@ -537,23 +537,29 @@ std::vector<unsigned char> CNetAddr::GetGroup(const std::vector<bool> &asmap) co
nBits = 32;
}
- // push our ip onto vchRet byte by byte...
- while (nBits >= 8)
- {
- vchRet.push_back(GetByte(15 - nStartByte));
- nStartByte++;
- nBits -= 8;
- }
+ // Push our address onto vchRet.
+ const size_t num_bytes = nBits / 8;
+ vchRet.insert(vchRet.end(), m_addr.begin(), m_addr.begin() + num_bytes);
+ nBits %= 8;
// ...for the last byte, push nBits and for the rest of the byte push 1's
- if (nBits > 0)
- vchRet.push_back(GetByte(15 - nStartByte) | ((1 << (8 - nBits)) - 1));
+ if (nBits > 0) {
+ assert(num_bytes < m_addr.size());
+ vchRet.push_back(m_addr[num_bytes] | ((1 << (8 - nBits)) - 1));
+ }
return vchRet;
}
+std::vector<unsigned char> CNetAddr::GetAddrBytes() const
+{
+ uint8_t serialized[V1_SERIALIZATION_SIZE];
+ SerializeV1Array(serialized);
+ return {std::begin(serialized), std::end(serialized)};
+}
+
uint64_t CNetAddr::GetHash() const
{
- uint256 hash = Hash(ip);
+ uint256 hash = Hash(m_addr);
uint64_t nRet;
memcpy(&nRet, &hash, sizeof(nRet));
return nRet;
@@ -764,53 +770,89 @@ CSubNet::CSubNet():
memset(netmask, 0, sizeof(netmask));
}
-CSubNet::CSubNet(const CNetAddr &addr, int32_t mask)
+CSubNet::CSubNet(const CNetAddr& addr, uint8_t mask) : CSubNet()
{
- valid = true;
+ valid = (addr.IsIPv4() && mask <= ADDR_IPV4_SIZE * 8) ||
+ (addr.IsIPv6() && mask <= ADDR_IPV6_SIZE * 8);
+ if (!valid) {
+ return;
+ }
+
+ assert(mask <= sizeof(netmask) * 8);
+
network = addr;
- // Default to /32 (IPv4) or /128 (IPv6), i.e. match single address
- memset(netmask, 255, sizeof(netmask));
-
- // IPv4 addresses start at offset 12, and first 12 bytes must match, so just offset n
- const int astartofs = network.IsIPv4() ? 12 : 0;
-
- int32_t n = mask;
- if(n >= 0 && n <= (128 - astartofs*8)) // Only valid if in range of bits of address
- {
- n += astartofs*8;
- // Clear bits [n..127]
- for (; n < 128; ++n)
- netmask[n>>3] &= ~(1<<(7-(n&7)));
- } else
- valid = false;
- // Normalize network according to netmask
- for(int x=0; x<16; ++x)
- network.ip[x] &= netmask[x];
+ uint8_t n = mask;
+ for (size_t i = 0; i < network.m_addr.size(); ++i) {
+ const uint8_t bits = n < 8 ? n : 8;
+ netmask[i] = (uint8_t)((uint8_t)0xFF << (8 - bits)); // Set first bits.
+ network.m_addr[i] &= netmask[i]; // Normalize network according to netmask.
+ n -= bits;
+ }
+}
+
+/**
+ * @returns The number of 1-bits in the prefix of the specified subnet mask. If
+ * the specified subnet mask is not a valid one, -1.
+ */
+static inline int NetmaskBits(uint8_t x)
+{
+ switch(x) {
+ case 0x00: return 0;
+ case 0x80: return 1;
+ case 0xc0: return 2;
+ case 0xe0: return 3;
+ case 0xf0: return 4;
+ case 0xf8: return 5;
+ case 0xfc: return 6;
+ case 0xfe: return 7;
+ case 0xff: return 8;
+ default: return -1;
+ }
}
-CSubNet::CSubNet(const CNetAddr &addr, const CNetAddr &mask)
+CSubNet::CSubNet(const CNetAddr& addr, const CNetAddr& mask) : CSubNet()
{
- valid = true;
- network = addr;
- // Default to /32 (IPv4) or /128 (IPv6), i.e. match single address
- memset(netmask, 255, sizeof(netmask));
+ valid = (addr.IsIPv4() || addr.IsIPv6()) && addr.m_net == mask.m_net;
+ if (!valid) {
+ return;
+ }
+ // Check if `mask` contains 1-bits after 0-bits (which is an invalid netmask).
+ bool zeros_found = false;
+ for (auto b : mask.m_addr) {
+ const int num_bits = NetmaskBits(b);
+ if (num_bits == -1 || (zeros_found && num_bits != 0)) {
+ valid = false;
+ return;
+ }
+ if (num_bits < 8) {
+ zeros_found = true;
+ }
+ }
- // IPv4 addresses start at offset 12, and first 12 bytes must match, so just offset n
- const int astartofs = network.IsIPv4() ? 12 : 0;
+ assert(mask.m_addr.size() <= sizeof(netmask));
- for(int x=astartofs; x<16; ++x)
- netmask[x] = mask.ip[x];
+ memcpy(netmask, mask.m_addr.data(), mask.m_addr.size());
+
+ network = addr;
// Normalize network according to netmask
- for(int x=0; x<16; ++x)
- network.ip[x] &= netmask[x];
+ for (size_t x = 0; x < network.m_addr.size(); ++x) {
+ network.m_addr[x] &= netmask[x];
+ }
}
-CSubNet::CSubNet(const CNetAddr &addr):
- valid(addr.IsValid())
+CSubNet::CSubNet(const CNetAddr& addr) : CSubNet()
{
- memset(netmask, 255, sizeof(netmask));
+ valid = addr.IsIPv4() || addr.IsIPv6();
+ if (!valid) {
+ return;
+ }
+
+ assert(addr.m_addr.size() <= sizeof(netmask));
+
+ memset(netmask, 0xFF, addr.m_addr.size());
+
network = addr;
}
@@ -822,68 +864,29 @@ bool CSubNet::Match(const CNetAddr &addr) const
{
if (!valid || !addr.IsValid() || network.m_net != addr.m_net)
return false;
- for(int x=0; x<16; ++x)
- if ((addr.ip[x] & netmask[x]) != network.ip[x])
+ assert(network.m_addr.size() == addr.m_addr.size());
+ for (size_t x = 0; x < addr.m_addr.size(); ++x) {
+ if ((addr.m_addr[x] & netmask[x]) != network.m_addr[x]) {
return false;
- return true;
-}
-
-/**
- * @returns The number of 1-bits in the prefix of the specified subnet mask. If
- * the specified subnet mask is not a valid one, -1.
- */
-static inline int NetmaskBits(uint8_t x)
-{
- switch(x) {
- case 0x00: return 0;
- case 0x80: return 1;
- case 0xc0: return 2;
- case 0xe0: return 3;
- case 0xf0: return 4;
- case 0xf8: return 5;
- case 0xfc: return 6;
- case 0xfe: return 7;
- case 0xff: return 8;
- default: return -1;
+ }
}
+ return true;
}
std::string CSubNet::ToString() const
{
- /* Parse binary 1{n}0{N-n} to see if mask can be represented as /n */
- int cidr = 0;
- bool valid_cidr = true;
- int n = network.IsIPv4() ? 12 : 0;
- for (; n < 16 && netmask[n] == 0xff; ++n)
- cidr += 8;
- if (n < 16) {
- int bits = NetmaskBits(netmask[n]);
- if (bits < 0)
- valid_cidr = false;
- else
- cidr += bits;
- ++n;
- }
- for (; n < 16 && valid_cidr; ++n)
- if (netmask[n] != 0x00)
- valid_cidr = false;
-
- /* Format output */
- std::string strNetmask;
- if (valid_cidr) {
- strNetmask = strprintf("%u", cidr);
- } else {
- if (network.IsIPv4())
- strNetmask = strprintf("%u.%u.%u.%u", netmask[12], netmask[13], netmask[14], netmask[15]);
- else
- strNetmask = strprintf("%x:%x:%x:%x:%x:%x:%x:%x",
- netmask[0] << 8 | netmask[1], netmask[2] << 8 | netmask[3],
- netmask[4] << 8 | netmask[5], netmask[6] << 8 | netmask[7],
- netmask[8] << 8 | netmask[9], netmask[10] << 8 | netmask[11],
- netmask[12] << 8 | netmask[13], netmask[14] << 8 | netmask[15]);
+ assert(network.m_addr.size() <= sizeof(netmask));
+
+ uint8_t cidr = 0;
+
+ for (size_t i = 0; i < network.m_addr.size(); ++i) {
+ if (netmask[i] == 0x00) {
+ break;
+ }
+ cidr += NetmaskBits(netmask[i]);
}
- return network.ToString() + "/" + strNetmask;
+ return network.ToString() + strprintf("/%u", cidr);
}
bool CSubNet::IsValid() const
diff --git a/src/netaddress.h b/src/netaddress.h
index 0365907d44..d00f5a6f55 100644
--- a/src/netaddress.h
+++ b/src/netaddress.h
@@ -9,9 +9,12 @@
#include <config/bitcoin-config.h>
#endif
+#include <attributes.h>
#include <compat.h>
+#include <prevector.h>
#include <serialize.h>
+#include <array>
#include <cstdint>
#include <string>
#include <vector>
@@ -39,16 +42,49 @@ enum Network
/// TORv2
NET_ONION,
- /// A set of dummy addresses that map a name to an IPv6 address. These
- /// addresses belong to RFC4193's fc00::/7 subnet (unique-local addresses).
- /// We use them to map a string or FQDN to an IPv6 address in CAddrMan to
- /// keep track of which DNS seeds were used.
+ /// A set of addresses that represent the hash of a string or FQDN. We use
+ /// them in CAddrMan to keep track of which DNS seeds were used.
NET_INTERNAL,
/// Dummy value to indicate the number of NET_* constants.
NET_MAX,
};
+/// 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
+};
+
+/// 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
+};
+
+/// Prefix of an IPv6 address when it contains an embedded "internal" address.
+/// Used when (un)serializing addresses in ADDRv1 format (pre-BIP155).
+/// The prefix comes from 0xFD + SHA256("bitcoin")[0:5].
+/// 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> INTERNAL_IN_IPV6_PREFIX{
+ 0xFD, 0x6B, 0x88, 0xC0, 0x87, 0x24 // 0xFD + sha256("bitcoin")[0:5].
+};
+
+/// Size of IPv4 address (in bytes).
+static constexpr size_t ADDR_IPV4_SIZE = 4;
+
+/// Size of IPv6 address (in bytes).
+static constexpr size_t ADDR_IPV6_SIZE = 16;
+
+/// Size of TORv2 address (in bytes).
+static constexpr size_t ADDR_TORV2_SIZE = 10;
+
+/// Size of "internal" (NET_INTERNAL) address (in bytes).
+static constexpr size_t ADDR_INTERNAL_SIZE = 10;
+
/**
* Network address.
*/
@@ -56,11 +92,16 @@ 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};
- unsigned char ip[16]; // in network byte order
uint32_t scopeId{0}; // for scoped/link-local ipv6 addresses
public:
@@ -74,13 +115,7 @@ class CNetAddr
* (e.g. IPv4) disguised as IPv6. This encoding is used in the legacy
* `addr` encoding.
*/
- void SetLegacyIPv6(const uint8_t ipv6[16]);
-
- /**
- * Set raw IPv4 or IPv6 address (in network byte order)
- * @note Only NET_IPV4 and NET_IPV6 are allowed for network.
- */
- void SetRaw(Network network, const uint8_t *data);
+ void SetLegacyIPv6(Span<const uint8_t> ipv6);
bool SetInternal(const std::string& name);
@@ -111,7 +146,6 @@ class CNetAddr
enum Network GetNetwork() const;
std::string ToString() const;
std::string ToStringIP() const;
- unsigned int GetByte(int n) const;
uint64_t GetHash() const;
bool GetInAddr(struct in_addr* pipv4Addr) const;
uint32_t GetNetClass() const;
@@ -127,7 +161,7 @@ class CNetAddr
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 { return {std::begin(ip), std::end(ip)}; }
+ 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);
@@ -143,7 +177,7 @@ class CNetAddr
template <typename Stream>
void Serialize(Stream& s) const
{
- s << ip;
+ SerializeV1Stream(s);
}
/**
@@ -152,14 +186,92 @@ class CNetAddr
template <typename Stream>
void Unserialize(Stream& s)
{
- unsigned char ip_temp[sizeof(ip)];
- s >> ip_temp;
+ UnserializeV1Stream(s);
+ }
+
+ friend class CSubNet;
+
+ private:
+ /**
+ * Size of CNetAddr when serialized as ADDRv1 (pre-BIP155) (in bytes).
+ */
+ static constexpr size_t V1_SERIALIZATION_SIZE = ADDR_IPV6_SIZE;
+
+ /**
+ * Serialize in pre-ADDRv2/BIP155 format to an array.
+ * Some addresses (e.g. TORv3) cannot be serialized in pre-BIP155 format.
+ */
+ 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_ONION:
+ prefix_size = sizeof(TORV2_IN_IPV6_PREFIX);
+ assert(prefix_size + m_addr.size() == sizeof(arr));
+ memcpy(arr, TORV2_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_UNROUTABLE:
+ case NET_MAX:
+ assert(false);
+ } // no default case, so the compiler can warn about missing cases
+
+ assert(false);
+ }
+
+ /**
+ * Serialize in pre-ADDRv2/BIP155 format to a stream.
+ * Some addresses (e.g. TORv3) cannot be serialized in pre-BIP155 format.
+ */
+ template <typename Stream>
+ void SerializeV1Stream(Stream& s) const
+ {
+ uint8_t serialized[V1_SERIALIZATION_SIZE];
+
+ SerializeV1Array(serialized);
+
+ s << serialized;
+ }
+
+ /**
+ * 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(ip_temp);
+ SetLegacyIPv6(arr);
}
- friend class CSubNet;
+ /**
+ * 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);
+ }
};
class CSubNet
@@ -174,11 +286,11 @@ class CSubNet
public:
CSubNet();
- CSubNet(const CNetAddr &addr, int32_t mask);
- CSubNet(const CNetAddr &addr, const CNetAddr &mask);
+ CSubNet(const CNetAddr& addr, uint8_t mask);
+ CSubNet(const CNetAddr& addr, const CNetAddr& mask);
//constructor for single ip subnet (<ipv4>/32 or <ipv6>/128)
- explicit CSubNet(const CNetAddr &addr);
+ explicit CSubNet(const CNetAddr& addr);
bool Match(const CNetAddr &addr) const;
diff --git a/src/netbase.cpp b/src/netbase.cpp
index 3a3b5f3e66..0273839017 100644
--- a/src/netbase.cpp
+++ b/src/netbase.cpp
@@ -13,6 +13,7 @@
#include <atomic>
#include <cstdint>
+#include <limits>
#ifndef WIN32
#include <fcntl.h>
@@ -838,8 +839,8 @@ bool LookupSubNet(const std::string& strSubnet, CSubNet& ret)
if (slash != strSubnet.npos)
{
std::string strNetmask = strSubnet.substr(slash + 1);
- int32_t n;
- if (ParseInt32(strNetmask, &n)) {
+ uint8_t n;
+ if (ParseUInt8(strNetmask, &n)) {
// If valid number, assume CIDR variable-length subnet masking
ret = CSubNet(network, n);
return ret.IsValid();
diff --git a/src/test/fuzz/asmap.cpp b/src/test/fuzz/asmap.cpp
index 40ca01bd9f..e3aefa18a3 100644
--- a/src/test/fuzz/asmap.cpp
+++ b/src/test/fuzz/asmap.cpp
@@ -33,7 +33,7 @@ void test_one_input(const std::vector<uint8_t>& buffer)
if (buffer.size() < 1 + 3 + 4) return;
int asmap_size = 3 + (buffer[0] & 127);
bool ipv6 = buffer[0] & 128;
- int addr_size = ipv6 ? 16 : 4;
+ const size_t addr_size = ipv6 ? ADDR_IPV6_SIZE : ADDR_IPV4_SIZE;
if (buffer.size() < size_t(1 + asmap_size + addr_size)) return;
std::vector<bool> asmap = ipv6 ? IPV6_PREFIX_ASMAP : IPV4_PREFIX_ASMAP;
asmap.reserve(asmap.size() + 8 * asmap_size);
@@ -43,7 +43,17 @@ void test_one_input(const std::vector<uint8_t>& buffer)
}
}
if (!SanityCheckASMap(asmap)) return;
+
+ const uint8_t* addr_data = buffer.data() + 1 + asmap_size;
CNetAddr net_addr;
- net_addr.SetRaw(ipv6 ? NET_IPV6 : NET_IPV4, buffer.data() + 1 + asmap_size);
+ if (ipv6) {
+ assert(addr_size == ADDR_IPV6_SIZE);
+ net_addr.SetLegacyIPv6(Span<const uint8_t>(addr_data, addr_size));
+ } else {
+ assert(addr_size == ADDR_IPV4_SIZE);
+ in_addr ipv4;
+ memcpy(&ipv4, addr_data, addr_size);
+ net_addr.SetIP(CNetAddr{ipv4});
+ }
(void)net_addr.GetMappedAS(asmap);
}
diff --git a/src/test/fuzz/netaddress.cpp b/src/test/fuzz/netaddress.cpp
index 2901c704f6..8252f38726 100644
--- a/src/test/fuzz/netaddress.cpp
+++ b/src/test/fuzz/netaddress.cpp
@@ -17,9 +17,6 @@ void test_one_input(const std::vector<uint8_t>& buffer)
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const CNetAddr net_addr = ConsumeNetAddr(fuzzed_data_provider);
- for (int i = 0; i < 15; ++i) {
- (void)net_addr.GetByte(i);
- }
(void)net_addr.GetHash();
(void)net_addr.GetNetClass();
if (net_addr.GetNetwork() == Network::NET_IPV4) {
@@ -78,7 +75,7 @@ void test_one_input(const std::vector<uint8_t>& buffer)
(void)net_addr.ToString();
(void)net_addr.ToStringIP();
- const CSubNet sub_net{net_addr, fuzzed_data_provider.ConsumeIntegral<int32_t>()};
+ const CSubNet sub_net{net_addr, fuzzed_data_provider.ConsumeIntegral<uint8_t>()};
(void)sub_net.IsValid();
(void)sub_net.ToString();
diff --git a/src/test/fuzz/util.h b/src/test/fuzz/util.h
index 9f9552edb9..ed6093a8a8 100644
--- a/src/test/fuzz/util.h
+++ b/src/test/fuzz/util.h
@@ -257,7 +257,7 @@ CNetAddr ConsumeNetAddr(FuzzedDataProvider& fuzzed_data_provider) noexcept
CSubNet ConsumeSubNet(FuzzedDataProvider& fuzzed_data_provider) noexcept
{
- return {ConsumeNetAddr(fuzzed_data_provider), fuzzed_data_provider.ConsumeIntegral<int32_t>()};
+ return {ConsumeNetAddr(fuzzed_data_provider), fuzzed_data_provider.ConsumeIntegral<uint8_t>()};
}
void InitializeFuzzingContext(const std::string& chain_name = CBaseChainParams::REGTEST)
diff --git a/src/test/net_tests.cpp b/src/test/net_tests.cpp
index 317000c771..917ae571f5 100644
--- a/src/test/net_tests.cpp
+++ b/src/test/net_tests.cpp
@@ -13,8 +13,10 @@
#include <streams.h>
#include <test/util/setup_common.h>
#include <util/memory.h>
+#include <util/strencodings.h>
#include <util/string.h>
#include <util/system.h>
+#include <version.h>
#include <boost/test/unit_test.hpp>
@@ -188,6 +190,78 @@ BOOST_AUTO_TEST_CASE(cnode_simple_test)
BOOST_CHECK(pnode2->IsInboundConn() == true);
}
+BOOST_AUTO_TEST_CASE(cnetaddr_basic)
+{
+ CNetAddr addr;
+
+ // IPv4, INADDR_ANY
+ BOOST_REQUIRE(LookupHost("0.0.0.0", addr, false));
+ BOOST_REQUIRE(!addr.IsValid());
+ BOOST_REQUIRE(addr.IsIPv4());
+
+ BOOST_CHECK(addr.IsBindAny());
+ BOOST_CHECK_EQUAL(addr.ToString(), "0.0.0.0");
+
+ // IPv4, INADDR_NONE
+ BOOST_REQUIRE(LookupHost("255.255.255.255", addr, false));
+ BOOST_REQUIRE(!addr.IsValid());
+ BOOST_REQUIRE(addr.IsIPv4());
+
+ BOOST_CHECK(!addr.IsBindAny());
+ BOOST_CHECK_EQUAL(addr.ToString(), "255.255.255.255");
+
+ // IPv4, casual
+ BOOST_REQUIRE(LookupHost("12.34.56.78", addr, false));
+ BOOST_REQUIRE(addr.IsValid());
+ BOOST_REQUIRE(addr.IsIPv4());
+
+ BOOST_CHECK(!addr.IsBindAny());
+ BOOST_CHECK_EQUAL(addr.ToString(), "12.34.56.78");
+
+ // IPv6, in6addr_any
+ BOOST_REQUIRE(LookupHost("::", addr, false));
+ BOOST_REQUIRE(!addr.IsValid());
+ BOOST_REQUIRE(addr.IsIPv6());
+
+ BOOST_CHECK(addr.IsBindAny());
+ BOOST_CHECK_EQUAL(addr.ToString(), "::");
+
+ // IPv6, casual
+ BOOST_REQUIRE(LookupHost("1122:3344:5566:7788:9900:aabb:ccdd:eeff", addr, false));
+ BOOST_REQUIRE(addr.IsValid());
+ BOOST_REQUIRE(addr.IsIPv6());
+
+ BOOST_CHECK(!addr.IsBindAny());
+ BOOST_CHECK_EQUAL(addr.ToString(), "1122:3344:5566:7788:9900:aabb:ccdd:eeff");
+
+ // TORv2
+ addr.SetSpecial("6hzph5hv6337r6p2.onion");
+ BOOST_REQUIRE(addr.IsValid());
+ BOOST_REQUIRE(addr.IsTor());
+
+ BOOST_CHECK(!addr.IsBindAny());
+ BOOST_CHECK_EQUAL(addr.ToString(), "6hzph5hv6337r6p2.onion");
+
+ // Internal
+ addr.SetInternal("esffpp");
+ BOOST_REQUIRE(!addr.IsValid()); // "internal" is considered invalid
+ BOOST_REQUIRE(addr.IsInternal());
+
+ BOOST_CHECK(!addr.IsBindAny());
+ BOOST_CHECK_EQUAL(addr.ToString(), "esffpvrt3wpeaygy.internal");
+}
+
+BOOST_AUTO_TEST_CASE(cnetaddr_serialize)
+{
+ CNetAddr addr;
+ CDataStream s(SER_NETWORK, PROTOCOL_VERSION);
+
+ addr.SetInternal("a");
+ s << addr;
+ BOOST_CHECK_EQUAL(HexStr(s), "fd6b88c08724ca978112ca1bbdcafac2");
+ s.clear();
+}
+
// prior to PR #14728, this test triggers an undefined behavior
BOOST_AUTO_TEST_CASE(ipv4_peer_with_ipv6_addrMe_test)
{
diff --git a/src/test/netbase_tests.cpp b/src/test/netbase_tests.cpp
index 49073ea657..6681c92bb5 100644
--- a/src/test/netbase_tests.cpp
+++ b/src/test/netbase_tests.cpp
@@ -185,6 +185,7 @@ BOOST_AUTO_TEST_CASE(subnet_test)
BOOST_CHECK(!ResolveSubNet("1.2.3.0/-1").IsValid());
BOOST_CHECK(ResolveSubNet("1.2.3.0/32").IsValid());
BOOST_CHECK(!ResolveSubNet("1.2.3.0/33").IsValid());
+ BOOST_CHECK(!ResolveSubNet("1.2.3.0/300").IsValid());
BOOST_CHECK(ResolveSubNet("1:2:3:4:5:6:7:8/0").IsValid());
BOOST_CHECK(ResolveSubNet("1:2:3:4:5:6:7:8/33").IsValid());
BOOST_CHECK(!ResolveSubNet("1:2:3:4:5:6:7:8/-1").IsValid());
@@ -216,6 +217,11 @@ BOOST_AUTO_TEST_CASE(subnet_test)
BOOST_CHECK(CSubNet(ResolveIP("1:2:3:4:5:6:7:8")).Match(ResolveIP("1:2:3:4:5:6:7:8")));
BOOST_CHECK(!CSubNet(ResolveIP("1:2:3:4:5:6:7:8")).Match(ResolveIP("1:2:3:4:5:6:7:9")));
BOOST_CHECK(CSubNet(ResolveIP("1:2:3:4:5:6:7:8")).ToString() == "1:2:3:4:5:6:7:8/128");
+ // IPv4 address with IPv6 netmask or the other way around.
+ BOOST_CHECK(!CSubNet(ResolveIP("1.1.1.1"), ResolveIP("ffff::")).IsValid());
+ BOOST_CHECK(!CSubNet(ResolveIP("::1"), ResolveIP("255.0.0.0")).IsValid());
+ // Can't subnet TOR (or any other non-IPv4 and non-IPv6 network).
+ BOOST_CHECK(!CSubNet(ResolveIP("5wyqrzbvrdsumnok.onion"), ResolveIP("255.0.0.0")).IsValid());
subnet = ResolveSubNet("1.2.3.4/255.255.255.255");
BOOST_CHECK_EQUAL(subnet.ToString(), "1.2.3.4/32");
@@ -290,11 +296,13 @@ BOOST_AUTO_TEST_CASE(subnet_test)
BOOST_CHECK_EQUAL(subnet.ToString(), "1::/16");
subnet = ResolveSubNet("1:2:3:4:5:6:7:8/0000:0000:0000:0000:0000:0000:0000:0000");
BOOST_CHECK_EQUAL(subnet.ToString(), "::/0");
+ // Invalid netmasks (with 1-bits after 0-bits)
subnet = ResolveSubNet("1.2.3.4/255.255.232.0");
- BOOST_CHECK_EQUAL(subnet.ToString(), "1.2.0.0/255.255.232.0");
+ BOOST_CHECK(!subnet.IsValid());
+ subnet = ResolveSubNet("1.2.3.4/255.0.255.255");
+ BOOST_CHECK(!subnet.IsValid());
subnet = ResolveSubNet("1:2:3:4:5:6:7:8/ffff:ffff:ffff:fffe:ffff:ffff:ffff:ff0f");
- BOOST_CHECK_EQUAL(subnet.ToString(), "1:2:3:4:5:6:7:8/ffff:ffff:ffff:fffe:ffff:ffff:ffff:ff0f");
-
+ BOOST_CHECK(!subnet.IsValid());
}
BOOST_AUTO_TEST_CASE(netbase_getgroup)
@@ -428,7 +436,8 @@ BOOST_AUTO_TEST_CASE(netbase_dont_resolve_strings_with_embedded_nul_characters)
BOOST_CHECK(!LookupSubNet(std::string("1.2.3.0/24\0", 11), ret));
BOOST_CHECK(!LookupSubNet(std::string("1.2.3.0/24\0example.com", 22), ret));
BOOST_CHECK(!LookupSubNet(std::string("1.2.3.0/24\0example.com\0", 23), ret));
- BOOST_CHECK(LookupSubNet(std::string("5wyqrzbvrdsumnok.onion", 22), ret));
+ // We only do subnetting for IPv4 and IPv6
+ BOOST_CHECK(!LookupSubNet(std::string("5wyqrzbvrdsumnok.onion", 22), ret));
BOOST_CHECK(!LookupSubNet(std::string("5wyqrzbvrdsumnok.onion\0", 23), ret));
BOOST_CHECK(!LookupSubNet(std::string("5wyqrzbvrdsumnok.onion\0example.com", 34), ret));
BOOST_CHECK(!LookupSubNet(std::string("5wyqrzbvrdsumnok.onion\0example.com\0", 35), ret));
diff --git a/src/util/strencodings.cpp b/src/util/strencodings.cpp
index 4d51b9045e..6d93029737 100644
--- a/src/util/strencodings.cpp
+++ b/src/util/strencodings.cpp
@@ -318,6 +318,18 @@ bool ParseInt64(const std::string& str, int64_t *out)
n <= std::numeric_limits<int64_t>::max();
}
+bool ParseUInt8(const std::string& str, uint8_t *out)
+{
+ uint32_t u32;
+ if (!ParseUInt32(str, &u32) || u32 > std::numeric_limits<uint8_t>::max()) {
+ return false;
+ }
+ if (out != nullptr) {
+ *out = static_cast<uint8_t>(u32);
+ }
+ return true;
+}
+
bool ParseUInt32(const std::string& str, uint32_t *out)
{
if (!ParsePrechecks(str))
diff --git a/src/util/strencodings.h b/src/util/strencodings.h
index b4bbaeebf6..4c7a2694a9 100644
--- a/src/util/strencodings.h
+++ b/src/util/strencodings.h
@@ -99,6 +99,13 @@ NODISCARD bool ParseInt32(const std::string& str, int32_t *out);
NODISCARD bool ParseInt64(const std::string& str, int64_t *out);
/**
+ * Convert decimal string to unsigned 8-bit integer with strict parse error feedback.
+ * @returns true if the entire string could be parsed as valid integer,
+ * false if not the entire string could be parsed or when overflow or underflow occurred.
+ */
+NODISCARD bool ParseUInt8(const std::string& str, uint8_t *out);
+
+/**
* Convert decimal string to unsigned 32-bit integer with strict parse error feedback.
* @returns true if the entire string could be parsed as valid integer,
* false if not the entire string could be parsed or when overflow or underflow occurred.
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-11 07:28:42 +0000