-/* Used when comparing CIDR masks for the modulus bits left over.
- * A lot of ircd's seem to do this:
- * ((-1) << (8 - (mask % 8)))
- * But imho, it sucks in comparison to a nice neat lookup table.
- */
-const unsigned char inverted_bits[8] = { 0x00, /* 00000000 - 0 bits - never actually used */
- 0x80, /* 10000000 - 1 bits */
- 0xC0, /* 11000000 - 2 bits */
- 0xE0, /* 11100000 - 3 bits */
- 0xF0, /* 11110000 - 4 bits */
- 0xF8, /* 11111000 - 5 bits */
- 0xFC, /* 11111100 - 6 bits */
- 0xFE /* 11111110 - 7 bits */
-};
-
-
-/* Match raw bytes using CIDR bit matching, used by higher level MatchCIDR() */
-bool irc::sockets::MatchCIDRBits(const unsigned char* address, const unsigned char* mask, unsigned int mask_bits)
-{
- unsigned int divisor = mask_bits / 8; /* Number of whole bytes in the mask */
- unsigned int modulus = mask_bits % 8; /* Remaining bits in the mask after whole bytes are dealt with */
-
- /* First (this is faster) compare the odd bits with logic ops */
- if (modulus)
- if ((address[divisor] & inverted_bits[modulus]) != (mask[divisor] & inverted_bits[modulus]))
- /* If they dont match, return false */
- return false;
-
- /* Secondly (this is slower) compare the whole bytes */
- if (memcmp(address, mask, divisor))
- return false;
-
- /* The address matches the mask, to mask_bits bits of mask */
- return true;
-}
-
-/* Match CIDR, but dont attempt to match() against leading *!*@ sections */
-bool irc::sockets::MatchCIDR(const std::string &address, const std::string &cidr_mask)
-{
- return MatchCIDR(address, cidr_mask, false);
-}
-