File indexing completed on 2025-01-05 04:37:10

 /*
     SPDX-FileCopyrightText: 2012 Joris Guisson <joris.guisson@gmail.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "findnodereq.h"
 #include "dht.h"
 #include <bcodec/bencoder.h>
 #include <bcodec/bnode.h>
 #include <util/error.h>
 #include <util/log.h>
 
 using namespace bt;
 
 namespace dht
 {
 FindNodeReq::FindNodeReq()
     : RPCMsg(QByteArray(), FIND_NODE, REQ_MSG, Key())
 {
 }
 
 FindNodeReq::FindNodeReq(const Key &id, const Key &target)
     : RPCMsg(QByteArray(), FIND_NODE, REQ_MSG, id)
     , target(target)
 {
 }
 
 FindNodeReq::~FindNodeReq()
 {
 }
 
 void FindNodeReq::apply(dht::DHT *dh_table)
 {
     dh_table->findNode(*this);
 }
 
 void FindNodeReq::print()
 {
     Out(SYS_DHT | LOG_NOTICE) << QString("REQ: %1 %2 : find_node %3").arg(mtid[0]).arg(id.toString()).arg(target.toString()) << endl;
 }
 
 void FindNodeReq::encode(QByteArray &arr) const
 {
     BEncoder enc(new BEncoderBufferOutput(arr));
     enc.beginDict();
     {
         enc.write(ARG);
         enc.beginDict();
         {
             enc.write(QByteArrayLiteral("id"));
             enc.write(id.getData(), 20);
             enc.write(QByteArrayLiteral("target"));
             enc.write(target.getData(), 20);
         }
         enc.end();
         enc.write(REQ);
         enc.write(QByteArrayLiteral("find_node"));
         enc.write(TID);
         enc.write(mtid);
         enc.write(TYP);
         enc.write(REQ);
     }
     enc.end();
 }
 
 void FindNodeReq::parse(BDictNode *dict)
 {
     dht::RPCMsg::parse(dict);
     BDictNode *args = dict->getDict(ARG);
     if (!args)
         throw bt::Error("Invalid request, arguments missing");
 
     target = Key(args->getByteArray("target"));
     BListNode *ln = args->getList("want");
     if (ln) {
         for (bt::Uint32 i = 0; i < ln->getNumChildren(); i++)
             want.append(ln->getString(i, nullptr));
     }
 }
 
 bool FindNodeReq::wants(int ip_version) const
 {
     return want.contains(QString("n%1").arg(ip_version));
 }
 
 }