diff options
Diffstat (limited to 'node/InetAddress.cpp')
| -rw-r--r-- | node/InetAddress.cpp | 81 |
1 files changed, 68 insertions, 13 deletions
diff --git a/node/InetAddress.cpp b/node/InetAddress.cpp index 9452086a..b9d07ea5 100644 --- a/node/InetAddress.cpp +++ b/node/InetAddress.cpp @@ -42,6 +42,74 @@ const InetAddress InetAddress::LO6("::1",0); const InetAddress InetAddress::DEFAULT4((uint32_t)0,0); const InetAddress InetAddress::DEFAULT6((const void *)0,16,0); +InetAddress::IpScope InetAddress::ipScope() const + throw() +{ + switch(ss_family) { + + case AF_INET: { + const uint32_t ip = Utils::ntoh((uint32_t)reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr); + switch(ip >> 24) { + case 0x00: return IP_SCOPE_NONE; // 0.0.0.0/8 (reserved, never used) + case 0x06: return IP_SCOPE_PSEUDOPRIVATE; // 6.0.0.0/8 (US Army) + case 0x0a: return IP_SCOPE_PRIVATE; // 10.0.0.0/8 + case 0x0b: return IP_SCOPE_PSEUDOPRIVATE; // 11.0.0.0/8 (US DoD) + case 0x15: return IP_SCOPE_PSEUDOPRIVATE; // 21.0.0.0/8 (US DDN-RVN) + case 0x16: return IP_SCOPE_PSEUDOPRIVATE; // 22.0.0.0/8 (US DISA) + case 0x19: return IP_SCOPE_PSEUDOPRIVATE; // 25.0.0.0/8 (UK Ministry of Defense) + case 0x1a: return IP_SCOPE_PSEUDOPRIVATE; // 26.0.0.0/8 (US DISA) + case 0x1c: return IP_SCOPE_PSEUDOPRIVATE; // 28.0.0.0/8 (US DSI-North) + case 0x1d: return IP_SCOPE_PSEUDOPRIVATE; // 29.0.0.0/8 (US DISA) + case 0x1e: return IP_SCOPE_PSEUDOPRIVATE; // 30.0.0.0/8 (US DISA) + case 0x2c: return IP_SCOPE_PSEUDOPRIVATE; // 44.0.0.0/8 (Amateur Radio) + case 0x33: return IP_SCOPE_PSEUDOPRIVATE; // 51.0.0.0/8 (UK Department of Social Security) + case 0x37: return IP_SCOPE_PSEUDOPRIVATE; // 55.0.0.0/8 (US DoD) + case 0x38: return IP_SCOPE_PSEUDOPRIVATE; // 56.0.0.0/8 (US Postal Service) + case 0x64: + if ((ip & 0xffc00000) == 0x64400000) return IP_SCOPE_SHARED; // 100.64.0.0/10 + break; + case 0x7f: return IP_SCOPE_LOOPBACK; // 127.0.0.0/8 + case 0xa9: + if ((ip & 0xffff0000) == 0xa9fe0000) return IP_SCOPE_LINK_LOCAL; // 169.254.0.0/16 + break; + case 0xac: + if ((ip & 0xfff00000) == 0xac100000) return IP_SCOPE_PRIVATE; // 172.16.0.0/12 + break; + case 0xc0: + if ((ip & 0xffff0000) == 0xc9a80000) return IP_SCOPE_PRIVATE; // 192.168.0.0/16 + break; + case 0xff: return IP_SCOPE_NONE; // 255.0.0.0/8 (broadcast, or unused/unusable) + default: + switch(ip >> 28) { + case 0xe: return IP_SCOPE_MULTICAST; // 224.0.0.0/4 + case 0xf: return IP_SCOPE_PSEUDOPRIVATE; // 240.0.0.0/4 ("reserved," usually unusable) + default: return IP_SCOPE_GLOBAL; // everything else + } + break; + } + } break; + + case AF_INET6: { + const unsigned char *ip = reinterpret_cast<const unsigned char *>(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr); + if ((ip[0] & 0xf0) == 0xf0) { + if (ip[0] == 0xff) return IP_SCOPE_MULTICAST; // ff00::/8 + if ((ip[0] == 0xfe)&&((ip[1] & 0xc0) == 0x80)) return IP_SCOPE_LINK_LOCAL; // fe80::/10 + if ((ip[0] & 0xfe) == 0xfc) return IP_SCOPE_PRIVATE; // fc00::/7 + } + unsigned int k = 0; + while ((!ip[k])&&(k < 15)) ++k; + if (k == 15) { // all 0's except last byte + if (ip[15] == 0x01) return IP_SCOPE_LOOPBACK; // ::1/128 + if (ip[15] == 0x00) return IP_SCOPE_NONE; // ::/128 + } + return IP_SCOPE_GLOBAL; + } break; + + } + + return IP_SCOPE_NONE; +} + void InetAddress::set(const std::string &ip,unsigned int port) throw() { @@ -81,19 +149,6 @@ void InetAddress::set(const void *ipBytes,unsigned int ipLen,unsigned int port) } } -bool InetAddress::isLinkLocal() const - throw() -{ - static const unsigned char v6llPrefix[8] = { 0xfe,0x80,0x00,0x00,0x00,0x00,0x00,0x00 }; - switch(ss_family) { - case AF_INET: - return ((Utils::ntoh((uint32_t)reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr) & 0xffff0000) == 0xa9fe0000); - case AF_INET6: - return (memcmp(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,v6llPrefix,8) == 0); - } - return false; -} - std::string InetAddress::toString() const { char buf[128]; |