Return offset of IPv4 address, or 0 == not an IPv4 */
| 41 | |
| 42 | /* Return offset of IPv4 address, or 0 == not an IPv4 */ |
| 43 | static size_t IPv4In6(const struct wireaddr *addr) |
| 44 | { |
| 45 | if (addr->type != ADDR_TYPE_IPV6) |
| 46 | return 0; |
| 47 | if (memcmp(addr->addr, pchIPv4, sizeof(pchIPv4)) == 0) |
| 48 | return sizeof(pchIPv4); |
| 49 | if (IsRFC6052(addr)) |
| 50 | return 12; |
| 51 | if (IsRFC6145(addr)) |
| 52 | return 12; |
| 53 | if (IsRFC3964(addr)) |
| 54 | return 2; |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | /* Is this an IPv4 address, or an IPv6-wrapped IPv4 */ |
| 59 | static bool IsIPv4(const struct wireaddr *addr) |