From bd15cb874fa3130ab2789b3560478d93afabfbd9 Mon Sep 17 00:00:00 2001 From: moneroexamples Date: Tue, 20 Dec 2016 15:08:33 +0800 Subject: [PATCH] Locate our mixins in key images added --- README.md | 2 +- src/page.h | 193 +++++++++++++++++++++++++++++++++- src/templates/my_outputs.html | 36 +++++++ 3 files changed, 229 insertions(+), 2 deletions(-) diff --git a/README.md b/README.md index 7ba5f1e..5ad0044 100644 --- a/README.md +++ b/README.md @@ -377,7 +377,7 @@ int main(int ac, const char* av[]) { } - return EXIT_SUCCESS; + return EXIT_SUCCESS; } ``` diff --git a/src/page.h b/src/page.h index 393fe89..320af1d 100644 --- a/src/page.h +++ b/src/page.h @@ -1259,11 +1259,202 @@ public: ++i; } - //cout << "outputs.size(): " << outputs.size() << endl; + // we can also test ouputs used in mixins for key images + // this can show possible spending. Only possible, because + // without a spend key, we cant know for sure. It might be + // that our output was used by someelse for their mixin. + // for this we can look in our custom db, for efficiencly + + unique_ptr mylmdb; + + if (bf::is_directory(lmdb2_path)) + { + mylmdb = make_unique(lmdb2_path); + } + + mstch::array inputs; + + vector input_key_imgs = xmreg::get_key_images(tx); + + for (const txin_to_key& in_key: input_key_imgs) + { + + if (!mylmdb) + { + break; + } + + // get absolute offsets of mixins + std::vector absolute_offsets + = cryptonote::relative_output_offsets_to_absolute( + in_key.key_offsets); + + // get public keys of outputs used in the mixins that match to the offests + std::vector mixin_outputs; + + + try + { + core_storage->get_db().get_output_key(in_key.amount, + absolute_offsets, + mixin_outputs); + } + catch (const OUTPUT_DNE& e) + { + cerr << "get_output_keys: " << e.what() << endl; + continue; + } + + inputs.push_back(mstch::map{ + {"key_image" , pod_to_hex(in_key.k_image)}, + {"key_image_amount", xmreg::xmr_amount_to_str(in_key.amount)}, + {"mixins" , mstch::array{}} + }); + + mstch::array& mixins = boost::get( + boost::get(inputs.back())["mixins"] + ); + + // to store our mixins found for the given key image + vector> our_mixins_found; + + // for each found output public key find check if its ours or not + for (const cryptonote::output_data_t& output_data: mixin_outputs) + { + + string out_pub_key_str = pod_to_hex(output_data.pubkey); + + //cout << "out_pub_key_str: " << out_pub_key_str << endl; + + // this will be txs where the outputs come from + vector found_tx_hashes; + + + mylmdb->search(out_pub_key_str, + found_tx_hashes, + "output_public_keys"); + + + mixins.push_back(mstch::map{ + {"mixin_pub_key", out_pub_key_str}, + {"mixin_outputs", mstch::array{}} + }); + + mstch::array& mixin_outputs = boost::get( + boost::get(mixins.back())["mixin_outputs"] + ); + + // for each output transaction, check if its ours + // as before + for (string tx_hash_str: found_tx_hashes) + { + + crypto::hash tx_hash; + + hex_to_pod(tx_hash_str, tx_hash); + + transaction mixin_tx; + + if (!mcore->get_tx(tx_hash, mixin_tx)) + { + cerr << "Cant get tx in blockchain: " << tx_hash << endl; + continue; + } + + + public_key tx_pub_key + = xmreg::get_tx_pub_key_from_received_outs(mixin_tx); + + // public transaction key is combined with our viewkey + // to create, so called, derived key. + key_derivation derivation; + + if (!generate_key_derivation(tx_pub_key, prv_view_key, derivation)) + { + cerr << "Cant get derived key for: " << "\n" + << "pub_tx_key: " << tx_pub_key << " and " + << "prv_view_key" << prv_view_key << endl; + + continue; + } + + // + vector> output_pub_keys; + + output_pub_keys = xmreg::get_ouputs_tuple(mixin_tx); + + mixin_outputs.push_back(mstch::map{ + {"mix_tx_hash" , tx_hash_str}, + {"found_outputs", mstch::array{}} + }); + + mstch::array& found_outputs = boost::get( + boost::get(mixin_outputs.back())["found_outputs"] + ); + + + // for each output in mixin tx, find the one from key_image + // and check if its ours. + for (const auto& mix_out: output_pub_keys) + { + + txout_to_key txout_k = std::get<0>(mix_out); + uint64_t amount = std::get<1>(mix_out); + uint64_t output_idx_in_tx = std::get<2>(mix_out); + +// if (mix_out.first.key != output_data.pubkey) +// { +// continue; +// } + + // get the tx output public key + // that normally would be generated for us, + // if someone had sent us some xmr. + public_key tx_pubkey_generated; + + derive_public_key(derivation, + output_idx_in_tx, + address.m_spend_public_key, + tx_pubkey_generated); + + // check if generated public key matches the current output's key + bool mine_output = (txout_k.key == tx_pubkey_generated); + + + // save our mixnin's public keys + found_outputs.push_back(mstch::map { + {"my_public_key" , pod_to_hex(txout_k.key)}, + {"tx_hash" , tx_hash_str}, + {"mine_output" , mine_output}, + {"out_idx" , to_string(output_idx_in_tx)}, + {"formed_output_pk", out_pub_key_str}, + {"amount" , xmreg::xmr_amount_to_str(amount)}, + }); + + if (mine_output) + { + + +// cout << " - " << pod_to_hex(txout_k.key) +// <<": " << mine_output << " amount: " +// << xmreg::xmr_amount_to_str(amount) +// << endl; + } + + } // for (const pair& mix_out: txd.output_pub_keys) + + } // for (string tx_hash_str: found_tx_hashes) + + } // for (const cryptonote::output_data_t& output_data: mixin_outputs) + + } // for (const txin_to_key& in_key: input_key_imgs) + context["outputs"] = outputs; context["sum_xmr"] = xmreg::xmr_amount_to_str(sum_xmr); + context["inputs"] = inputs; + // read my_outputs.html string my_outputs_html = xmreg::read(TMPL_MY_OUTPUTS); diff --git a/src/templates/my_outputs.html b/src/templates/my_outputs.html index 9be2c69..a00cce5 100644 --- a/src/templates/my_outputs.html +++ b/src/templates/my_outputs.html @@ -63,6 +63,42 @@

Sum XMR from matched outputs: {{sum_xmr}}

+ + + +
+ +

Inputs

+
+ {{#inputs}} +

Key image: {{key_image}}, amount {{key_image_amount}}

+ {{#mixins}} +
Mixin of pub key: {{mixin_pub_key}}
+ {{#mixin_outputs}} +
+ uses outputs from tx: + {{mix_tx_hash}} +
+ {{#found_outputs}} + +
+ Output public key: {{my_public_key}}, + amount: {{amount}}, + is ours: + {{#mine_output}} + {{mine_output}} + {{/mine_output}} + {{^mine_output}} + {{mine_output}} + {{/mine_output}} +
+ + {{/found_outputs}} + {{/mixin_outputs}} + + {{/mixins}} + {{/inputs}} +