rpc/net: Adds misbehaving_score to getpeerinfo

Github-Pull: bitcoin#29530
Rebased-From: 976d61c

Author: luke-jr

src/net_processing.cpp

@@ -1914,6 +1914,7 @@ bool PeerManagerImpl::GetNodeStateStats(NodeId nodeid, CNodeStateStats& stats) c
         }
     }
     stats.time_offset = peer->m_time_offset;
+    stats.m_misbehavior_score = WITH_LOCK(peer->m_misbehavior_mutex, return peer->m_should_discourage) ? 100 : 0;
 
     return true;
 }

src/net_processing.h

@@ -46,6 +46,7 @@ struct CNodeStateStats {
     ServiceFlags their_services;
     int64_t presync_height{-1};
     std::chrono::seconds time_offset{0};
+    int m_misbehavior_score{0};
 };
 
 struct PeerManagerInfo {

src/rpc/net.cpp

@@ -187,6 +187,8 @@ static RPCHelpMan getpeerinfo()
                                                               "best capture connection behaviors."},
                     {RPCResult::Type::STR, "transport_protocol_type", "Type of transport protocol: \n" + Join(TRANSPORT_TYPE_DOC, ",\n") + ".\n"},
                     {RPCResult::Type::STR, "session_id", "The session ID for this connection, or \"\" if there is none (\"v2\" transport protocol only).\n"},
+                    {RPCResult::Type::NUM, "misbehavior_score", "The accumulated misbehavior score for this peer.\n"
+                                                                 "The peer will be disconnected if 100 is reached.\n"},
                 }},
             }},
         },
@@ -293,6 +295,7 @@ static RPCHelpMan getpeerinfo()
         obj.pushKV("connection_type", ConnectionTypeAsString(stats.m_conn_type));
         obj.pushKV("transport_protocol_type", TransportTypeAsString(stats.m_transport_type));
         obj.pushKV("session_id", stats.m_session_id);
+        obj.pushKV("misbehavior_score", statestats.m_misbehavior_score);
 
         ret.push_back(std::move(obj));
     }

test/functional/rpc_net.py

@@ -173,6 +173,7 @@ def test_getpeerinfo(self):
                 "timeoffset": 0,
                 "transport_protocol_type": "v1" if not self.options.v2transport else "v2",
                 "version": 0,
+                "misbehavior_score": 0,
             },
         )
         no_version_peer.peer_disconnect()