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added some socket classification functions

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hyung-hwan
2020-09-07 08:05:54 +00:00
parent 664a770a3a
commit bbeec42ad2
3 changed files with 95 additions and 9 deletions
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73
qse/lib/si/SocketAddress.cpp
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@ -378,21 +378,90 @@ bool SocketAddress::isLoopBack () const QSE_CPP_NOEXCEPT
{
case AF_INET:
{
// 127.0.0.0/8
struct sockaddr_in* v4 = (struct sockaddr_in*)&this->skad;
return v4->sin_addr.s_addr == QSE_CONST_HTON32(0x7F000001);
return (v4->sin_addr.s_addr & QSE_CONST_HTON32(0xFF000000u)) == QSE_CONST_HTON32(0x7F000000u);
}
case AF_INET6:
{
struct sockaddr_in6* v6 = (struct sockaddr_in6*)&this->skad;
qse_uint32_t* x = (qse_uint32_t*)v6->sin6_addr.s6_addr; // TODO: is this alignment safe?
return x[0] == 0 && x[1] == 0 && x[2] == 0 && x[3] == 1;
return (x[0] == 0 && x[1] == 0 && x[2] == 0 && x[3] == QSE_CONST_HTON32(1)) ||
(this->isV4Mapped() && (x[3] & QSE_CONST_HTON32(0xFF000000u)) == QSE_CONST_HTON32(0x7F000000u));
}
}
return false;
}
bool SocketAddress::isLinkLocal() const QSE_CPP_NOEXCEPT
{
switch (FAMILY(&this->skad))
{
case AF_INET:
{
// 169.254.0.0/16
struct sockaddr_in* v4 = (struct sockaddr_in*)&this->skad;
return (v4->sin_addr.s_addr & QSE_CONST_HTON32(0xFFFF0000u)) == QSE_CONST_HTON32(0xA9FE0000u);
}
case AF_INET6:
{
// FE80::/10
struct sockaddr_in6* v6 = (struct sockaddr_in6*)&this->skad;
return v6->sin6_addr.s6_addr[0] == 0xFE && (v6->sin6_addr.s6_addr[1] & 0xC0) == 0x80;
}
}
return false;
}
bool SocketAddress::isSiteLocal() const QSE_CPP_NOEXCEPT
{
if (FAMILY(&this->skad) != AF_INET6) return false;
// FEC0::/10
struct sockaddr_in6* v6 = (struct sockaddr_in6*)&this->skad;
return v6->sin6_addr.s6_addr[0] == 0xFE && (v6->sin6_addr.s6_addr[1] & 0xC0) == 0xC0;
}
bool SocketAddress::isMulticast() const QSE_CPP_NOEXCEPT
{
switch (FAMILY(&this->skad))
{
case AF_INET:
{
// 224.0.0.0/4
struct sockaddr_in* v4 = (struct sockaddr_in*)&this->skad;
return (v4->sin_addr.s_addr & QSE_CONST_HTON32(0xF0000000u)) == QSE_CONST_HTON32(0xE0000000u);
}
case AF_INET6:
{
// FF00::/8
struct sockaddr_in6* v6 = (struct sockaddr_in6*)&this->skad;
return v6->sin6_addr.s6_addr[0] == 0xFF;
}
}
return false;
}
bool SocketAddress::isV4Mapped() const QSE_CPP_NOEXCEPT
{
if (FAMILY(&this->skad) != AF_INET6) return false;
struct sockaddr_in6* v6 = (struct sockaddr_in6*)&this->skad;
return v6->sin6_addr.s6_addr[0] == 0x00 && v6->sin6_addr.s6_addr[1] == 0x00 &&
v6->sin6_addr.s6_addr[2] == 0x00 && v6->sin6_addr.s6_addr[3] == 0x00 &&
v6->sin6_addr.s6_addr[4] == 0x00 && v6->sin6_addr.s6_addr[5] == 0x00 &&
v6->sin6_addr.s6_addr[6] == 0x00 && v6->sin6_addr.s6_addr[7] == 0x00 &&
v6->sin6_addr.s6_addr[8] == 0x00 && v6->sin6_addr.s6_addr[9] == 0x00 &&
v6->sin6_addr.s6_addr[10] == 0xFF && v6->sin6_addr.s6_addr[11] == 0xFF;
}
bool SocketAddress::isInIpSubnet (const qse_nwad_t* addr, int prefix) const QSE_CPP_NOEXCEPT
{
switch (addr->type)