1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#ifndef _D_PEER_LIST_PROCESSOR_H_
#define _D_PEER_LIST_PROCESSOR_H_
#include "common.h"
#include <cstring>
#include "a2netcompat.h"
#include "bencode.h"
#include "Peer.h"
namespace aria2 {
class PeerListProcessor {
public:
template<typename OutputIterator>
void extractPeer(const BDE& peerData, OutputIterator dest)
{
if(peerData.isList()) {
extractPeerFromList(peerData, dest);
} else if(peerData.isString()) {
extractPeerFromCompact(peerData, dest);
}
}
template<typename OutputIterator>
void extractPeerFromList(const BDE& peerData, OutputIterator dest)
{
for(BDE::List::const_iterator itr = peerData.listBegin(),
eoi = peerData.listEnd(); itr != eoi; ++itr) {
const BDE& peerDict = *itr;
if(!peerDict.isDict()) {
continue;
}
static const std::string IP = "ip";
static const std::string PORT = "port";
const BDE& ip = peerDict[IP];
const BDE& port = peerDict[PORT];
if(!ip.isString() || !port.isInteger() ||
!(0 < port.i() && port.i() < 65536)) {
continue;
}
*dest = SharedHandle<Peer>(new Peer(ip.s(), port.i()));
++dest;
}
}
template<typename OutputIterator>
void extractPeerFromCompact(const BDE& peerData, OutputIterator dest)
{
size_t length = peerData.s().size();
if(length%6 == 0) {
for(size_t i = 0; i < length; i += 6) {
struct in_addr in;
memcpy(&in.s_addr, peerData.s().c_str()+i, sizeof(uint32_t));
std::string ipaddr = inet_ntoa(in);
uint16_t port_nworder;
memcpy(&port_nworder, peerData.s().c_str()+i+4, sizeof(uint16_t));
uint16_t port = ntohs(port_nworder);
*dest = SharedHandle<Peer>(new Peer(ipaddr, port));
++dest;
}
}
}
};
} // namespace aria2
#endif // _D_PEER_LIST_PROCESSOR_H_
|
