| 185 | } |
| 186 | |
| 187 | bool CNetAddr::IsValid() const |
| 188 | { |
| 189 | // Cleanup 3-byte shifted addresses caused by garbage in size field |
| 190 | // of addr messages from versions before 0.2.9 checksum. |
| 191 | // Two consecutive addr messages look like this: |
| 192 | // header20 vectorlen3 addr26 addr26 addr26 header20 vectorlen3 addr26 addr26 addr26... |
| 193 | // so if the first length field is garbled, it reads the second batch |
| 194 | // of addr misaligned by 3 bytes. |
| 195 | if (memcmp(ip, pchIPv4+3, sizeof(pchIPv4)-3) == 0) |
| 196 | return false; |
| 197 | |
| 198 | // unspecified IPv6 address (::/128) |
| 199 | unsigned char ipNone6[16] = {}; |
| 200 | if (memcmp(ip, ipNone6, 16) == 0) |
| 201 | return false; |
| 202 | |
| 203 | // documentation IPv6 address |
| 204 | if (IsRFC3849()) |
| 205 | return false; |
| 206 | |
| 207 | if (IsInternal()) |
| 208 | return false; |
| 209 | |
| 210 | if (IsIPv4()) |
| 211 | { |
| 212 | // INADDR_NONE |
| 213 | uint32_t ipNone = INADDR_NONE; |
| 214 | if (memcmp(ip+12, &ipNone, 4) == 0) |
| 215 | return false; |
| 216 | |
| 217 | // 0 |
| 218 | ipNone = 0; |
| 219 | if (memcmp(ip+12, &ipNone, 4) == 0) |
| 220 | return false; |
| 221 | } |
| 222 | |
| 223 | return true; |
| 224 | } |
| 225 | |
| 226 | bool CNetAddr::IsRoutable() const |
| 227 | { |