github-wownero/wowlet
1
0
Fork 0
mirror of https://github.com/wownero/wowlet.git synced 2026-11-05 15:44:10 +01:00
Code Issues Packages Projects Releases Wiki Activity

Mitigate target_height attack

Browse Source
This commit is contained in:
tobtoht
2020-11-14 22:42:41 +01:00
parent d2d3978de6
commit d9dfef021f
6 changed files with 25 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/utils/nodes.cpp
+16 -9
View File
@@ -15,7 +15,7 @@ Nodes::Nodes(AppContext *ctx, QNetworkAccessManager *networkAccessManager, QObje
QObject(parent),
m_ctx(ctx),
m_networkAccessManager(networkAccessManager),
m_connection(FeatherNode("", 0, false)),
m_connection(FeatherNode()),
modelWebsocket(new NodeModel(NodeSource::websocket, this)),
modelCustom(new NodeModel(NodeSource::custom, this)) {
this->loadConfig();
@@ -47,7 +47,7 @@ void Nodes::loadConfig() {
// load custom nodes
auto nodes = obj.value("custom").toArray();
foreach (const QJsonValue &value, nodes) {
auto customNode = FeatherNode(value.toString(), 0, false);
auto customNode = FeatherNode(value.toString());
customNode.custom = true;
if(m_connection == customNode) {
@@ -63,7 +63,7 @@ void Nodes::loadConfig() {
// load cached websocket nodes
auto ws = obj.value("ws").toArray();
foreach (const QJsonValue &value, ws) {
auto wsNode = FeatherNode(value.toString(), 0, false);
auto wsNode = FeatherNode(value.toString());
wsNode.custom = false;
wsNode.online = true; // assume online
@@ -214,7 +214,7 @@ void Nodes::onConnectionTimer() {
FeatherNode Nodes::pickEligibleNode() {
// Pick a node at random to connect to
FeatherNode rtn("", 0, false);
auto rtn = FeatherNode();
NodeSource nodeSource = this->source();
auto wsMode = nodeSource == NodeSource::websocket;
auto nodes = wsMode ? m_websocketNodes : m_customNodes;
@@ -268,12 +268,19 @@ FeatherNode Nodes::pickEligibleNode() {
continue;
m_connectionAttempts.append(node.full);
if (wsMode && !node.online)
continue;
if (wsMode) {
// Ignore offline nodes
if (!node.online)
continue;
// Ignore nodes that are more than 25 blocks behind mode
if (wsMode && node.height < (mode_height - 25))
continue;
// Ignore nodes that are more than 25 blocks behind mode
if (node.height < (mode_height - 25))
continue;
// Ignore nodes that say they aren't synchronized
if (node.target_height > node.height)
continue;
}
return node;
}