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/*
Plugin of Miranda IM for communicating with users of the AIM protocol.
Copyright (c) 2008-2009 Boris Krasnovskiy
Copyright (C) 2005-2006 Aaron Myles Landwehr
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, see <http://www.gnu.org/licenses/>.
*/
#include "aim.h"
#include "tlv.h"
TLV::TLV(char* buf)
{
type_=_htons((*(unsigned short*)&buf[0]));
length_=_htons((*(unsigned short*)&buf[2]));
if (length_ > 0)
{
value_=(char*)mir_alloc(length_+1);
memcpy(value_,&buf[4],length_);
}
else
value_= NULL;
}
TLV::TLV(unsigned short type, unsigned short length, const char* value)
{
type_ = type;
length_ = length;
if (length_ > 0)
{
value_ = (char*)mir_alloc(length_+1);
memcpy(value_, value, length_);
}
else
value_= NULL;
}
TLV::~TLV()
{
mir_free(value_);
}
unsigned short TLV::ushort(int pos)
{
return _htons(*(unsigned short*)&value_[pos]);
}
unsigned long TLV::ulong(int pos)
{
return _htonl(*(unsigned long*)&value_[pos]);
}
unsigned __int64 TLV::u64(int pos)
{
return _htonl64(*(unsigned __int64*)&value_[pos]);
}
unsigned char TLV::ubyte(int pos)
{
return value_[pos];
}
char* TLV::part(int pos, int length)//returns part of the tlv value
{
if ((pos + length) > length_) return NULL;
char* value = (char*)mir_alloc(length + 2);
memcpy(value, &value_[pos], length);
value[length] = '\0';
value[length+1] = '\0';
return value;
}
char* TLV::dupw(void)
{
wchar_t *str = (wchar_t*)part(0, length_);
wcs_htons(str);
char* stru = mir_utf8encodeW(str);
mir_free(str);
return stru;
}
unsigned short TLV::whole(char* buf)//returns the whole tlv
{
*(unsigned short*)buf = _htons(type_);
*(unsigned short*)&buf[2] = _htons(length_);
memcpy(&buf[4], value_, length_);
return length_ + TLV_HEADER_SIZE;
}
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