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Merge pull request #34 from moneroexamples/parse_raw_tx_data

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Parse raw tx data and be able to decode its outputs
This commit is contained in:
moneroexamples 2017-01-30 16:15:55 +08:00 committed by GitHub
commit 9b2edff4f4
3 changed files with 128 additions and 8 deletions
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6
main.cpp
View file

@ -197,7 +197,11 @@ int main(int ac, const char* av[]) {
string xmr_address = post_body["xmr_address"];
string viewkey = post_body["viewkey"];
return xmrblocks.show_my_outputs(tx_hash, xmr_address, viewkey);
// this will be only not empty when checking raw tx data
// using tx pusher
string raw_tx_data = post_body["raw_tx_data"];
return xmrblocks.show_my_outputs(tx_hash, xmr_address, viewkey, raw_tx_data);
});
CROW_ROUTE(app, "/prove").methods("POST"_method)

128
src/page.h
View file

@ -1104,6 +1104,7 @@ public:
show_my_outputs(string tx_hash_str,
string xmr_address_str,
string viewkey_str, /* or tx_prv_key_str when tx_prove == true */
string raw_tx_data,
bool tx_prove = false)
{
@ -1111,6 +1112,7 @@ public:
boost::trim(tx_hash_str);
boost::trim(xmr_address_str);
boost::trim(viewkey_str);
boost::trim(raw_tx_data);
if (tx_hash_str.empty())
{
@ -1165,7 +1167,40 @@ public:
// get transaction
transaction tx;
if (!mcore->get_tx(tx_hash, tx))
if (!raw_tx_data.empty())
{
// we want to check outputs of tx submited through tx pusher.
// it is raw tx data, it is not in blockchain nor in mempool.
// so we need to reconstruct tx object from this string
cryptonote::blobdata tx_data_blob;
if (!epee::string_tools::parse_hexstr_to_binbuff(raw_tx_data, tx_data_blob))
{
string msg = fmt::format("Cant obtain tx_data_blob from raw_tx_data");
cerr << msg << endl;
return msg;
}
crypto::hash tx_hash_from_blob;
crypto::hash tx_prefix_hash_from_blob;
if (!cryptonote::parse_and_validate_tx_from_blob(tx_data_blob,
tx,
tx_hash_from_blob,
tx_prefix_hash_from_blob))
{
string msg = fmt::format("cant parse_and_validate_tx_from_blob");
cerr << msg << endl;
return msg;
}
}
else if (!mcore->get_tx(tx_hash, tx))
{
cerr << "Cant get tx in blockchain: " << tx_hash
<< ". \n Check mempool now" << endl;
@ -1691,7 +1726,10 @@ public:
string xmr_address_str,
string tx_prv_key_str)
{
return show_my_outputs(tx_hash_str, xmr_address_str, tx_prv_key_str, true);
string raw_tx_data {""}; // not using it in prove tx. only for outputs
return show_my_outputs(tx_hash_str, xmr_address_str,
tx_prv_key_str, raw_tx_data, true);
}
string
@ -2007,12 +2045,88 @@ public:
if (strncmp(decoded_raw_tx_data.c_str(), SIGNED_TX_PREFIX, magiclen) != 0)
{
string msg = fmt::format("The data is neither unsigned nor signed tx! Its prefix is: {:s}",
data_prefix);
cout << msg << endl;
return string(msg);
}
// ok, so its not signed tx data. but maybe it is raw tx data
// used in rpc call "/sendrawtransaction". This is for example
// used in mymonero and openmonero projects.
// to check this, first we need to encode data back to base64.
// the reason is that txs submited to "/sendrawtransaction"
// are not base64, and we earlier always asume it is base64.
// string reencoded_raw_tx_data = epee::string_encoding::base64_decode(raw_tx_data);
//cout << "raw_tx_data: " << raw_tx_data << endl;
cryptonote::blobdata tx_data_blob;
if (!epee::string_tools::parse_hexstr_to_binbuff(raw_tx_data, tx_data_blob))
{
string msg = fmt::format("The data is neither unsigned, signed tx or raw tx! "
"Its prefix is: {:s}",
data_prefix);
cout << msg << endl;
return string(msg);
}
crypto::hash tx_hash_from_blob;
crypto::hash tx_prefix_hash_from_blob;
cryptonote::transaction tx_from_blob;
if (!cryptonote::parse_and_validate_tx_from_blob(tx_data_blob,
tx_from_blob,
tx_hash_from_blob,
tx_prefix_hash_from_blob))
{
string msg = fmt::format("failed to validate transaction");
cout << msg << endl;
return string(msg);
}
//cout << "tx_from_blob.vout.size(): " << tx_from_blob.vout.size() << endl;
// tx has been correctly deserialized. So
// we just dispaly it. We dont have any information about real mixins, etc,
// so there is not much more we can do with tx data.
mstch::map tx_context = construct_tx_context(tx_from_blob);
if (boost::get<bool>(tx_context["has_error"]))
{
return boost::get<string>(tx_context["error_msg"]);
}
// this will be stored in html for for checking outputs
// we need this data if we want to use "Decode outputs"
// to see which outputs are ours, and decode amounts in ringct txs
tx_context["raw_tx_data"] = raw_tx_data;
context["data_prefix"] = string("none as this is pure raw tx data");
context.emplace("txs" , mstch::array{});
boost::get<mstch::array>(context["txs"]).push_back(tx_context);
map<string, string> partials {
{"tx_details", xmreg::read(string(TMPL_PARIALS_DIR) + "/tx_details.html")},
};
// read checkrawtx.html
string checkrawtx_html = xmreg::read(TMPL_MY_CHECKRAWTX);
// add header and footer
string full_page = checkrawtx_html + get_footer();
add_css_style(context);
// render the page
return mstch::render(full_page, context, partials);
} // if (strncmp(decoded_raw_tx_data.c_str(), SIGNED_TX_PREFIX, magiclen) != 0)
context["data_prefix"] = data_prefix;

2
src/templates/partials/tx_details.html
View file

@ -92,6 +92,8 @@
<input type="hidden" name="tx_hash" value="{{tx_hash}}"><br/>
<input type="text" name="xmr_address" size="90" placeholder="Monero address"><br/>
<input type="text" name="viewkey" size="90" placeholder="Private viewkey" style="margin-top:5px"><br/>
<input type="hidden" name="raw_tx_data" value="{{raw_tx_data}}">
<!--above raw_tx_data field only used when checking raw tx data through tx pusher-->
<input type="submit" value="Decode outputs" style="margin-top:5px" >
</form>
</div>