| 131 | } |
| 132 | |
| 133 | bool CBloomFilter::IsRelevantAndUpdate(const CTransaction& tx) |
| 134 | { |
| 135 | bool fFound = false; |
| 136 | // Match if the filter contains the hash of tx |
| 137 | // for finding tx when they appear in a block |
| 138 | if (isFull) |
| 139 | return true; |
| 140 | if (isEmpty) |
| 141 | return false; |
| 142 | const uint256& hash = tx.GetHash(); |
| 143 | if (contains(hash)) |
| 144 | fFound = true; |
| 145 | |
| 146 | for (unsigned int i = 0; i < tx.vout.size(); i++) |
| 147 | { |
| 148 | const CTxOut& txout = tx.vout[i]; |
| 149 | // Match if the filter contains any arbitrary script data element in any scriptPubKey in tx |
| 150 | // If this matches, also add the specific output that was matched. |
| 151 | // This means clients don't have to update the filter themselves when a new relevant tx |
| 152 | // is discovered in order to find spending transactions, which avoids round-tripping and race conditions. |
| 153 | CScript::const_iterator pc = txout.scriptPubKey.begin(); |
| 154 | std::vector<unsigned char> data; |
| 155 | while (pc < txout.scriptPubKey.end()) |
| 156 | { |
| 157 | opcodetype opcode; |
| 158 | if (!txout.scriptPubKey.GetOp(pc, opcode, data)) |
| 159 | break; |
| 160 | if (data.size() != 0 && contains(data)) |
| 161 | { |
| 162 | fFound = true; |
| 163 | if ((nFlags & BLOOM_UPDATE_MASK) == BLOOM_UPDATE_ALL) |
| 164 | insert(COutPoint(hash, i)); |
| 165 | else if ((nFlags & BLOOM_UPDATE_MASK) == BLOOM_UPDATE_P2PUBKEY_ONLY) |
| 166 | { |
| 167 | txnouttype type; |
| 168 | std::vector<std::vector<unsigned char> > vSolutions; |
| 169 | if (Solver(txout.scriptPubKey, type, vSolutions) && |
| 170 | (type == TX_PUBKEY || type == TX_MULTISIG)) |
| 171 | insert(COutPoint(hash, i)); |
| 172 | } |
| 173 | break; |
| 174 | } |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | if (fFound) |
| 179 | return true; |
| 180 | |
| 181 | for (const CTxIn& txin : tx.vin) |
| 182 | { |
| 183 | // Match if the filter contains an outpoint tx spends |
| 184 | if (contains(txin.prevout)) |
| 185 | return true; |
| 186 | |
| 187 | // Match if the filter contains any arbitrary script data element in any scriptSig in tx |
| 188 | CScript::const_iterator pc = txin.scriptSig.begin(); |
| 189 | std::vector<unsigned char> data; |
| 190 | while (pc < txin.scriptSig.end()) |