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https://git.wownero.com/wownero/onion-wownero-blockchain-explorer.git
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Locate our mixins in key images added
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moneroexamples
parent
c797e2d59e
commit
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3 changed files with 229 additions and 2 deletions
193
src/page.h
193
src/page.h
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@ -1259,11 +1259,202 @@ public:
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++i;
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}
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//cout << "outputs.size(): " << outputs.size() << endl;
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// we can also test ouputs used in mixins for key images
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// this can show possible spending. Only possible, because
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// without a spend key, we cant know for sure. It might be
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// that our output was used by someelse for their mixin.
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// for this we can look in our custom db, for efficiencly
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unique_ptr<xmreg::MyLMDB> mylmdb;
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if (bf::is_directory(lmdb2_path))
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{
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mylmdb = make_unique<xmreg::MyLMDB>(lmdb2_path);
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}
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mstch::array inputs;
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vector<txin_to_key> input_key_imgs = xmreg::get_key_images(tx);
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for (const txin_to_key& in_key: input_key_imgs)
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{
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if (!mylmdb)
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{
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break;
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}
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// get absolute offsets of mixins
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std::vector<uint64_t> absolute_offsets
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= cryptonote::relative_output_offsets_to_absolute(
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in_key.key_offsets);
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// get public keys of outputs used in the mixins that match to the offests
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std::vector<cryptonote::output_data_t> mixin_outputs;
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try
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{
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core_storage->get_db().get_output_key(in_key.amount,
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absolute_offsets,
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mixin_outputs);
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}
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catch (const OUTPUT_DNE& e)
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{
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cerr << "get_output_keys: " << e.what() << endl;
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continue;
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}
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inputs.push_back(mstch::map{
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{"key_image" , pod_to_hex(in_key.k_image)},
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{"key_image_amount", xmreg::xmr_amount_to_str(in_key.amount)},
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{"mixins" , mstch::array{}}
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});
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mstch::array& mixins = boost::get<mstch::array>(
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boost::get<mstch::map>(inputs.back())["mixins"]
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);
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// to store our mixins found for the given key image
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vector<map<string, string>> our_mixins_found;
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// for each found output public key find check if its ours or not
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for (const cryptonote::output_data_t& output_data: mixin_outputs)
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{
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string out_pub_key_str = pod_to_hex(output_data.pubkey);
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//cout << "out_pub_key_str: " << out_pub_key_str << endl;
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// this will be txs where the outputs come from
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vector<string> found_tx_hashes;
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mylmdb->search(out_pub_key_str,
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found_tx_hashes,
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"output_public_keys");
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mixins.push_back(mstch::map{
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{"mixin_pub_key", out_pub_key_str},
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{"mixin_outputs", mstch::array{}}
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});
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mstch::array& mixin_outputs = boost::get<mstch::array>(
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boost::get<mstch::map>(mixins.back())["mixin_outputs"]
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);
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// for each output transaction, check if its ours
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// as before
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for (string tx_hash_str: found_tx_hashes)
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{
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crypto::hash tx_hash;
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hex_to_pod(tx_hash_str, tx_hash);
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transaction mixin_tx;
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if (!mcore->get_tx(tx_hash, mixin_tx))
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{
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cerr << "Cant get tx in blockchain: " << tx_hash << endl;
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continue;
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}
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public_key tx_pub_key
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= xmreg::get_tx_pub_key_from_received_outs(mixin_tx);
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// public transaction key is combined with our viewkey
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// to create, so called, derived key.
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key_derivation derivation;
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if (!generate_key_derivation(tx_pub_key, prv_view_key, derivation))
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{
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cerr << "Cant get derived key for: " << "\n"
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<< "pub_tx_key: " << tx_pub_key << " and "
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<< "prv_view_key" << prv_view_key << endl;
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continue;
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}
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// <public_key , amount , out idx>
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vector<tuple<txout_to_key, uint64_t, uint64_t>> output_pub_keys;
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output_pub_keys = xmreg::get_ouputs_tuple(mixin_tx);
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mixin_outputs.push_back(mstch::map{
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{"mix_tx_hash" , tx_hash_str},
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{"found_outputs", mstch::array{}}
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});
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mstch::array& found_outputs = boost::get<mstch::array>(
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boost::get<mstch::map>(mixin_outputs.back())["found_outputs"]
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);
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// for each output in mixin tx, find the one from key_image
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// and check if its ours.
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for (const auto& mix_out: output_pub_keys)
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{
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txout_to_key txout_k = std::get<0>(mix_out);
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uint64_t amount = std::get<1>(mix_out);
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uint64_t output_idx_in_tx = std::get<2>(mix_out);
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// if (mix_out.first.key != output_data.pubkey)
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// {
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// continue;
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// }
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// get the tx output public key
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// that normally would be generated for us,
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// if someone had sent us some xmr.
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public_key tx_pubkey_generated;
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derive_public_key(derivation,
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output_idx_in_tx,
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address.m_spend_public_key,
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tx_pubkey_generated);
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// check if generated public key matches the current output's key
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bool mine_output = (txout_k.key == tx_pubkey_generated);
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// save our mixnin's public keys
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found_outputs.push_back(mstch::map {
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{"my_public_key" , pod_to_hex(txout_k.key)},
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{"tx_hash" , tx_hash_str},
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{"mine_output" , mine_output},
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{"out_idx" , to_string(output_idx_in_tx)},
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{"formed_output_pk", out_pub_key_str},
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{"amount" , xmreg::xmr_amount_to_str(amount)},
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});
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if (mine_output)
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{
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// cout << " - " << pod_to_hex(txout_k.key)
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// <<": " << mine_output << " amount: "
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// << xmreg::xmr_amount_to_str(amount)
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// << endl;
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}
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} // for (const pair<txout_to_key, uint64_t>& mix_out: txd.output_pub_keys)
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} // for (string tx_hash_str: found_tx_hashes)
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} // for (const cryptonote::output_data_t& output_data: mixin_outputs)
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} // for (const txin_to_key& in_key: input_key_imgs)
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context["outputs"] = outputs;
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context["sum_xmr"] = xmreg::xmr_amount_to_str(sum_xmr);
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context["inputs"] = inputs;
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// read my_outputs.html
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string my_outputs_html = xmreg::read(TMPL_MY_OUTPUTS);
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@ -63,6 +63,42 @@
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</table>
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<h3>Sum XMR from matched outputs: {{sum_xmr}}</h3>
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</div>
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<hr>
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<h3>Inputs</h3>
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<div class="center">
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{{#inputs}}
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<h4>Key image: {{key_image}}, amount {{key_image_amount}}</h4>
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{{#mixins}}
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<h5>Mixin of pub key: {{mixin_pub_key}}</h5>
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{{#mixin_outputs}}
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<h5>
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uses outputs from tx:
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<a href="/tx/{{mix_tx_hash}}">{{mix_tx_hash}}</a>
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</h5>
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{{#found_outputs}}
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<h6 style="font-family: 'Lucida Console', Monaco, monospace; font-size: 12px; font-weight: normal;">
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Output public key: {{my_public_key}},
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amount: {{amount}},
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is ours:
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{{#mine_output}}
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<span style="color: #008009;font-weight: bold">{{mine_output}}</span>
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{{/mine_output}}
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{{^mine_output}}
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{{mine_output}}
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{{/mine_output}}
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</h6>
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{{/found_outputs}}
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{{/mixin_outputs}}
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{{/mixins}}
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{{/inputs}}
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</div>
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