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address check cleanup

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This commit is contained in:
zzz
2013-10-14 17:02:08 +00:00
parent eb2af2b5fd
commit f9571740ae
1 changed files with 13 additions and 9 deletions
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22
router/java/src/net/i2p/router/transport/TransportUtil.java
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@ -131,25 +131,29 @@ public abstract class TransportUtil {
// IPv4 compat ::xxxx:xxxx
if (addr[0] == 0)
return false;
// disallow 2002::/16 (6to4 RFC 3056)
if (addr[0] == 0x20 && addr[1] == 0x02)
return false;
if (addr[0] == 0x20) {
// disallow 2002::/16 (6to4 RFC 3056)
if (addr[1] == 0x02)
return false;
if (addr[1] == 0x01) {
// disallow 2001:0::/32 (Teredo RFC 4380)
if (addr[2] == 0x00 && addr[3] == 0x00)
return false;
// Documenation (example) RFC 3849
if (addr[2] == 0x0d && (addr[3] & 0xff) == 0xb8)
return false;
}
}
// disallow fc00::/8 and fd00::/8 (Unique local addresses RFC 4193)
// not recognized as local by InetAddress
if ((addr[0] & 0xfe) == 0xfc)
return false;
// disallow 2001:0::/32 (Teredo RFC 4380)
if (addr[0] == 0x20 && addr[1] == 0x01 && addr[2] == 0x00 && addr[3] == 0x00)
return false;
// Hamachi IPv6
if (addr[0] == 0x26 && addr[1] == 0x20 && addr[2] == 0x00 && (addr[3] & 0xff) == 0x9b)
return false;
// 6bone RFC 2471
if (addr[0] == 0x3f && (addr[1] & 0xff) == 0xfe)
return false;
// Documenation (example) RFC 3849
if (addr[0] == 0x20 && addr[1] == 0x01 && addr[2] == 0x0d && (addr[3] & 0xff) == 0xb8)
return false;
try {
InetAddress ia = InetAddress.getByAddress(addr);
return