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/*
WinPopup Protocol plugin for Miranda IM.
Copyright (C) 2004-2010 Nikolay Raspopov
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "stdafx.h"
// Ïðîâåðêà, ÷òî ñòðîêà ïîõîæà íà IPv4-àäðåñ â ôîðìàòå xx.xx.xx.xx
bool IsValidIP (LPCTSTR name)
{
int dots = 0;
bool digit = false;
for ( ; *name; name++ )
{
if ( *name == _T('.') )
{
if ( ! digit )
// Äâå òî÷êè ïîäðÿä
return false;
dots++;
digit = false;
}
else if ( *name < _T('0') || *name > _T('9') )
{
// Ýòî íå öèôðà
return false;
}
else
{
digit = true;
}
}
return dots == 3 && digit;
}
// Ïîëó÷åíèå IP ïî èìåíè õîñòà è ïîëó÷åíèå êîðîòêîãî èìåíè õîñòà
ip ResolveToIP (CString& name)
{
// Ïîëó÷åíèå èìåíè èç IP-àäðåñà
ip addr = IsValidIP (name) ? ::inet_addr ( CT2A( name ) ) : INADDR_NONE;
if (addr != INADDR_NONE) {
struct hostent *hp = ::gethostbyaddr ((const char*) &addr, sizeof (addr), AF_INET);
if (hp) {
// Óêîðà÷èâàåì èìÿ
name = hp->h_name;
int n = name.Find ('.');
if (n != -1)
name = name.Left (n);
}
}
// Ïîëó÷åíèå IP-àäðåñà èç èìåíè
if (addr == INADDR_NONE) {
struct hostent *hp = ::gethostbyname ( CT2A( name ) );
if (hp) {
addr = ((struct in_addr*)hp->h_addr)->s_addr;
// Óêîðà÷èâàåì èìÿ
name = hp->h_name;
int n = name.Find ('.');
if (n != -1)
name = name.Left (n);
}
}
return ntohl (addr);
}
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