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
|
/*
* Dibbler - a portable DHCPv6
*
* author: Krzysztof Wnuk <keczi@poczta.onet.pl>
*
* released under GNU GPL v2 only licence
*
*/
#include "Portable.h"
#include "DHCPConst.h"
#include "Opt.h"
#include "OptIAPrefix.h"
#include "ClntOptIAPrefix.h"
#include "ClntOptStatusCode.h"
#include "Logger.h"
#include "IPv6Addr.h"
#include "Msg.h"
TClntOptIAPrefix::TClntOptIAPrefix( char * buf, int bufSize, TMsg* parent)
:TOptIAPrefix(buf, bufSize, parent)
{
SPtr<TOpt> opt;
int pos=0;
int MsgType = 0;
if (parent)
MsgType = parent->getType();
while(pos<bufSize)
{
if (pos+4>bufSize) {
Log(Error) << "Message " << MsgType << " truncated. There are " << (bufSize-pos)
<< " bytes left to parse. Bytes ignored." << LogEnd;
break;
}
unsigned short code = readUint16(buf+pos);
pos += sizeof(uint16_t);
unsigned short length = readUint16(buf+pos);
pos+= sizeof(uint16_t);
if (pos+length>bufSize) {
Log(Error) << "Invalid option (type=" << code << ", len=" << length
<< " received (msgtype=" << MsgType << "). Message dropped." << LogEnd;
return;
}
if (allowOptInOpt(parent->getType(),OPTION_IAPREFIX,code))
{
switch (code)
{
case OPTION_STATUS_CODE:
opt = new TClntOptStatusCode(buf+pos,length, this->Parent);
break;
default:
Log(Warning) <<"Option opttype=" << code<< "not supported "
<<" in field of message (type="<< parent->getType()
<<") in this version of client."<<LogEnd;
break;
}
if((opt)&&(opt->isValid()))
SubOptions.append(opt);
}
pos += length;
}
}
TClntOptIAPrefix::TClntOptIAPrefix(SPtr<TIPv6Addr> addr, long pref, long valid,
char prefixLength, TMsg* parent)
:TOptIAPrefix(addr,prefixLength,pref,valid, parent)
{
}
bool TClntOptIAPrefix::doDuties()
{
return false;
}
bool TClntOptIAPrefix::isValid() const
{
if (!TOptIAPrefix::isValid())
return false;
if (getValid() == 0)
return false;
return this->getValid() >= this->getPref();
}
|
