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Merge pull request #92 from jmacxx/entitlement_checking_mempool
Check roles using mempool tx lookup.
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110 changes: 110 additions & 0 deletions
110
social/src/main/java/bisq/social/userprofile/BsqTxValidator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| /* | ||
| * This file is part of Bisq. | ||
| * | ||
| * Bisq is free software: you can redistribute it and/or modify it | ||
| * under the terms of the GNU Affero General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or (at | ||
| * your option) any later version. | ||
| * | ||
| * Bisq is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public | ||
| * License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with Bisq. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| package bisq.social.userprofile; | ||
|
|
||
| import bisq.common.data.Pair; | ||
| import bisq.common.encoding.Hex; | ||
| import com.google.gson.Gson; | ||
| import com.google.gson.JsonArray; | ||
| import com.google.gson.JsonElement; | ||
| import com.google.gson.JsonObject; | ||
| import com.google.gson.JsonSyntaxException; | ||
|
|
||
| import lombok.extern.slf4j.Slf4j; | ||
|
|
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| import java.util.Optional; | ||
|
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| @Slf4j | ||
| public class BsqTxValidator { | ||
|
|
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| public static boolean initialSanityChecks(String txId, String jsonTxt) { | ||
| if (jsonTxt == null || jsonTxt.length() == 0) { | ||
| return false; | ||
| } | ||
| JsonObject json = new Gson().fromJson(jsonTxt, JsonObject.class); | ||
| // there should always be "id" string element at the top level | ||
| if (json.get("id") == null) { | ||
| return false; | ||
| } | ||
| // txid should match what we requested | ||
| if (!txId.equals(json.get("id").getAsString())) { | ||
| return false; | ||
| } | ||
| return true; | ||
| } | ||
|
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| public static boolean isBsqTx(String url, String txId, String jsonTxt) { | ||
| return url.matches(".*bisq.*") && initialSanityChecks(txId, jsonTxt); | ||
| } | ||
|
|
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| public static boolean isProofOfBurn(String jsonTxt) { | ||
| JsonObject json = new Gson().fromJson(jsonTxt, JsonObject.class); | ||
| JsonElement txType = json.get("txType"); | ||
| if (txType == null) { | ||
| return false; | ||
| } | ||
| return txType.getAsString().equalsIgnoreCase("PROOF_OF_BURN"); | ||
| } | ||
|
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| public static boolean isLockup(String jsonTxt) { | ||
| JsonObject json = new Gson().fromJson(jsonTxt, JsonObject.class); | ||
| JsonElement txType = json.get("txType"); | ||
| if (txType == null) { | ||
| return false; | ||
| } | ||
| return txType.getAsString().equalsIgnoreCase("LOCKUP"); | ||
| } | ||
|
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| public static long getBurntAmount(String jsonTxt) { | ||
| JsonObject json = new Gson().fromJson(jsonTxt, JsonObject.class); | ||
| JsonElement burntFee = json.get("burntFee"); | ||
| if (burntFee == null) { | ||
| return 0; // no json element, assume zero burnt amount | ||
| } | ||
| return burntFee.getAsLong(); | ||
| } | ||
|
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| public static Optional<String> getOpReturnData(String jsonTxt) { | ||
| try { | ||
| Pair<JsonArray, JsonArray> vinAndVout = getVinAndVout(jsonTxt); | ||
| JsonArray voutArray = vinAndVout.second(); | ||
| for (JsonElement x : voutArray) { | ||
| JsonObject y = x.getAsJsonObject(); | ||
| if (y.get("txOutputType").getAsString().matches(".*OP_RETURN.*")) { | ||
| return Optional.of(y.get("opReturn").getAsString()); | ||
| } | ||
| } | ||
| } catch (JsonSyntaxException e) { | ||
| log.error("json error:", e); | ||
| } | ||
| return Optional.empty(); | ||
| } | ||
|
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| private static Pair<JsonArray, JsonArray> getVinAndVout(String jsonTxt) throws JsonSyntaxException { | ||
| JsonObject json = new Gson().fromJson(jsonTxt, JsonObject.class); | ||
| if (json.get("inputs") == null || json.get("outputs") == null) { | ||
| throw new JsonSyntaxException("missing vin/vout"); | ||
| } | ||
| JsonArray jsonVin = json.get("inputs").getAsJsonArray(); | ||
| JsonArray jsonVout = json.get("outputs").getAsJsonArray(); | ||
| if (jsonVin == null || jsonVout == null || jsonVin.size() < 1 || jsonVout.size() < 1) { | ||
| throw new JsonSyntaxException("not enough vins/vouts"); | ||
| } | ||
| return new Pair<>(jsonVin, jsonVout); | ||
| } | ||
| } |
93 changes: 93 additions & 0 deletions
93
social/src/main/java/bisq/social/userprofile/BtcTxValidator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| /* | ||
| * This file is part of Bisq. | ||
| * | ||
| * Bisq is free software: you can redistribute it and/or modify it | ||
| * under the terms of the GNU Affero General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or (at | ||
| * your option) any later version. | ||
| * | ||
| * Bisq is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public | ||
| * License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with Bisq. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| package bisq.social.userprofile; | ||
|
|
||
| import bisq.common.data.Pair; | ||
| import bisq.common.encoding.Hex; | ||
| import com.google.gson.Gson; | ||
| import com.google.gson.JsonArray; | ||
| import com.google.gson.JsonElement; | ||
| import com.google.gson.JsonObject; | ||
| import com.google.gson.JsonSyntaxException; | ||
|
|
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| import lombok.extern.slf4j.Slf4j; | ||
|
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| import java.security.PublicKey; | ||
|
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| @Slf4j | ||
| public class BtcTxValidator { | ||
|
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| private static int PUBLIC_KEY_LENGTH = 33; | ||
|
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| public static boolean initialSanityChecks(String txId, String jsonTxt) { | ||
| if (jsonTxt == null || jsonTxt.length() == 0) { | ||
| return false; | ||
| } | ||
| JsonObject json = new Gson().fromJson(jsonTxt, JsonObject.class); | ||
| // there should always be "txid" string element at the top level | ||
| if (json.get("txid") == null) { | ||
| return false; | ||
| } | ||
| // txid should match what we requested | ||
| if (!txId.equals(json.get("txid").getAsString())) { | ||
| return false; | ||
| } | ||
| return true; | ||
| } | ||
|
|
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| public static String getFirstInputPubKey(String jsonTxt) { | ||
| try { | ||
| Pair<JsonArray, JsonArray> vinAndVout = getVinAndVout(jsonTxt); | ||
| JsonArray vinArray = vinAndVout.first(); | ||
| for (JsonElement x : vinArray) { | ||
| JsonObject vin = x.getAsJsonObject(); | ||
| // pubKey in witness or scriptsig (legacy or segwit txs) | ||
| JsonArray witnesses = vin.getAsJsonArray("witness"); | ||
| if (witnesses != null) { | ||
| String witnessPubKey = witnesses.get(1).getAsString(); | ||
| if (witnessPubKey.length() >= PUBLIC_KEY_LENGTH * 2) { | ||
| return witnessPubKey; | ||
| } | ||
| } | ||
| JsonElement scriptsig = vin.get("scriptsig"); | ||
| if (scriptsig != null) { | ||
| String scriptsigAsHex = scriptsig.getAsString(); | ||
| if (scriptsigAsHex.length() >= PUBLIC_KEY_LENGTH * 2) { | ||
| return scriptsigAsHex.substring(scriptsigAsHex.length() - PUBLIC_KEY_LENGTH * 2); | ||
| } | ||
| } | ||
| } | ||
| } catch (JsonSyntaxException e) { | ||
| log.error("json error:", e); | ||
| } | ||
| throw new JsonSyntaxException("could not find pubKey"); | ||
| } | ||
|
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| private static Pair<JsonArray, JsonArray> getVinAndVout(String jsonTxt) throws JsonSyntaxException { | ||
| JsonObject json = new Gson().fromJson(jsonTxt, JsonObject.class); | ||
| if (json.get("vin") == null || json.get("vout") == null) { | ||
| throw new JsonSyntaxException("missing vin/vout"); | ||
| } | ||
| JsonArray jsonVin = json.get("vin").getAsJsonArray(); | ||
| JsonArray jsonVout = json.get("vout").getAsJsonArray(); | ||
| if (jsonVin == null || jsonVout == null || jsonVin.size() < 1 || jsonVout.size() < 1) { | ||
| throw new JsonSyntaxException("not enough vins/vouts"); | ||
| } | ||
| return new Pair<>(jsonVin, jsonVout); | ||
| } | ||
| } |
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