nevrax.org : docs

00001 
+00007 /* Copyright, 2001 Nevrax Ltd.
+00008  *
+00009  * This file is part of NEVRAX NeL Network Services.
+00010  * NEVRAX NeL Network Services is free software; you can redistribute it and/or modify
+00011  * it under the terms of the GNU General Public License as published by
+00012  * the Free Software Foundation; either version 2, or (at your option)
+00013  * any later version.
+00014 
+00015  * NEVRAX NeL Network Services is distributed in the hope that it will be useful, but
+00016  * WITHOUT ANY WARRANTY; without even the implied warranty of
+00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+00018  * General Public License for more details.
+00019 
+00020  * You should have received a copy of the GNU General Public License
+00021  * along with NEVRAX NeL Network Services; see the file COPYING. If not, write to the
+00022  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+00023  * MA 02111-1307, USA.
+00024  */
+00025 
+00026 #include "stdnet.h"
+00027 
+00028 #include "nel/net/login_cookie.h"
+00029 
+00030 using namespace std;
+00031 using namespace NLMISC;
+00032 
+00033 
+00034 namespace NLNET {
+00035 
+00036 
+00037 /*
+00038  * Comparison == operator
+00039  */
+00040 bool operator== (const CLoginCookie &c1, const CLoginCookie &c2)
+00041 {
+00042         nlassert (c1._Valid && c2._Valid);
+00043 
+00044         return c1._UserAddr==c2._UserAddr && c1._UserKey==c2._UserKey && c1._UserId==c2._UserId;
+00045 }
+00046 
+00047 CLoginCookie::CLoginCookie (uint32 addr, uint32 id) : _Valid(true), _UserAddr(addr), _UserId(id)
+00048 {
+00049         // generates the key for this cookie
+00050         _UserKey = generateKey();
+00051 }
+00052 
+00054 
+00055 uint32 CLoginCookie::generateKey()
+00056 {
+00057         uint32 t = time (NULL);
+00058         srand (time(NULL));
+00059         uint32 r = rand ();
+00060         static uint32 n = 0;
+00061         n++;
+00062 
+00063         // 12bits for the time (in second) => loop in 1 hour
+00064         //  8bits for random => 256 case
+00065         // 12bits for the inc number => can generate 4096 keys per second without any problem (if you generate more than this number, you could have 2 same keys)
+00066         return (t&0xFFF)<<20 | (r&0xFF)<<12 | (n&0xFFF);
+00067 
+00068         // 12bits for the time (in second) => loop in 1 hour
+00069         // 20bits for the inc number => can generate more than 1 million keys per second without any problem (never exceed on my computer)
+00070 //      return (t&0xFFF)<<20 | (n&0xFFFFF);
+00071 }
+00072 
+00073 
+00074 /* test key generation
+00075 void main()
+00076 {
+00077         set<uint32> myset;
+00078 
+00079         // generates the key for this cookie
+00080         while (true)
+00081         {
+00082                 uint32 val = (t&0xFFF)<<20 | (r&0xFF)<<12 | (n&0xFFF);
+00083                 pair<set<uint32>::iterator,bool> p = myset.insert (val);
+00084                 if (!p.second) printf("%10u 0x%x already inserted\n", val, val);
+00085         }
+00086 }
+00087 */
+00088 
+00089 } // NL.
+
login_cookie.cpp
