File indexing completed on 2024-06-02 05:05:15

 /*
     SPDX-FileCopyrightText: 2005 Joris Guisson <joris.guisson@gmail.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 #include "pack.h"
 #include <arpa/inet.h>
 #include <util/error.h>
 #include <util/functions.h>
 
 using namespace bt;
 
 namespace dht
 {
 void PackBucketEntry(const KBucketEntry &e, QByteArray &ba, Uint32 off)
 {
     const net::Address &addr = e.getAddress();
     Uint8 *data = (Uint8 *)ba.data();
     Uint8 *ptr = data + off;
 
     if (addr.ipVersion() == 4) {
         // first check size
         if ((int)off + 26 > ba.size())
             throw bt::Error("Not enough room in buffer");
 
         // copy ID, IP address and port into the buffer
         memcpy(ptr, e.getID().getData(), 20);
         bt::WriteUint32(ptr, 20, addr.toIPv4Address());
         bt::WriteUint16(ptr, 24, addr.port());
     } else {
         // first check size
         if ((int)off + 38 > ba.size())
             throw bt::Error("Not enough room in buffer");
 
         // copy ID, IP address and port into the buffer
         memcpy(ptr, e.getID().getData(), 20);
         memcpy(ptr + 20, addr.toIPv6Address().c, 16);
         bt::WriteUint16(ptr, 36, addr.port());
     }
 }
 
 KBucketEntry UnpackBucketEntry(const QByteArray &ba, Uint32 off, int ip_version)
 {
     if (ip_version == 4) {
         if ((int)off + 26 > ba.size())
             throw bt::Error("Not enough room in buffer");
 
         const Uint8 *data = (Uint8 *)ba.data();
         const Uint8 *ptr = data + off;
 
         // get the port, ip and key);
         Uint16 port = bt::ReadUint16(ptr, 24);
         Uint32 ip = bt::ReadUint32(ptr, 20);
         Uint8 key[20];
         memcpy(key, ptr, 20);
 
         return KBucketEntry(net::Address(ip, port), dht::Key(key));
     } else {
         if ((int)off + 38 > ba.size())
             throw bt::Error("Not enough room in buffer");
 
         const Uint8 *data = (Uint8 *)ba.data();
         const Uint8 *ptr = data + off;
 
         // get the port, ip and key);
         Uint16 port = bt::ReadUint16(ptr, 36);
         Uint8 key[20];
         memcpy(key, ptr, 20);
 
         return KBucketEntry(net::Address((quint8 *)ptr + 20, port), dht::Key(key));
     }
 }
 
 }