hBifTs

山自高兮水自深！當塵霧消散，唯事實留傳.荣辱不惊, 看庭前花开花落; 去留随意, 望天上云展云舒.
posts - 82, comments - 442, trackbacks - 38, articles - 27

2004年7月6日

hoho.Blog访问量突破10k大关了:)

hoho,好爽啊~
Blog的访问量终于突破10K大关了.

从3月份申请这个Blog以来(即加入到博客园以来),发了不少的Blog(hoho,相对以前的我而言),认识了不少的牛人(Cow?bull?ox?).技术提高了不少.真是High啊:)

感谢dudu提供了这么好的Blog,这么快的访问速度..

嘿嘿..最后一句话,向第二个10K进军:)

posted @ 2004-07-06 23:15 hbifts 阅读(449) 评论(2) 编辑

序列化与HashCode..

在前一个文章序列化对象 :)中,我提到了
在这里,我使用了序列化,因为序列化的一个好处就是可以还原原始的HashCode,
即,序列化前的对象的GetHashCode()的返回值和序列化后还原的GetHashCode()的返回值是一样的:)

但是,我今天刚刚试了一下,发现不是这样的..示例代码如下:
using System;
using System.IO;
using System.Text;
using System.Collections;
using System.Runtime.Serialization.Formatters.Binary;

namespace TestForMapfile_Write
{
    /// <summary>
    /// Summary description for Class1.
    /// </summary>
    class Class1
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main(string[] args)
        {
            Console.WriteLine("please input p / c or x / y: ");
            SharedMemory sm = new SharedMemory();
            SharedMemory smClient;
            SharedMemory smHT;
            Client client;
            object obj;
            switch( Console.ReadLine()) 
            {            
                case "p":
                case "P":                
                    sm.Create( 10240,"Tiger");
                    client = new Client();
                    Console.WriteLine( client.GetHashCode());
                    client = new Client();
                    client.email = "tiger@msn.com";
                    client.id = 0;
                    client.name = "tiger";
                    sm.CopyFrom( Ser(client).ToArray());
                    Console.WriteLine( client.GetHashCode());
                    Console.WriteLine("ok");
                    Console.ReadLine();
                    break;
                case "c":
                case "C":
                    sm.Open( 10240,"Tiger");
                    MemoryStream ms = new MemoryStream( sm.CopyTo(0));
                    obj = Deser(ms);
                    Console.WriteLine( obj.GetHashCode());
                    Console.WriteLine("ok");
                    Console.ReadLine();
                    break;

                case "x":
                case "X":
                    smHT = new SharedMemory(10234,"smht");
                    smClient = new SharedMemory(10234,"smClient");
                    Hashtable ht = new Hashtable();
                    obj = new Client(1,"tiger","hh");
                    smClient.CopyFrom( Ser(obj).ToArray());
                    ht.Add( obj,1);
                    obj = new Client( 2,"unrule","unruldem");
                    smClient.CopyFrom( Ser(obj).ToArray());
                    ht.Add( obj,2);
                    smHT.CopyFrom( Ser(ht).ToArray());
                    Console.WriteLine("OK");
                    Console.ReadLine();
                    break;
                case "y":
                case "Y":
                    smHT = new SharedMemory();
                    smHT.Open(10234,"smht");
                    obj = Deser( new MemoryStream( smHT.CopyTo(0)));
                    smClient = new SharedMemory();
                    smClient.Open( 10234,"smClient");
                    object obj1 = Deser( new MemoryStream( smClient.CopyTo(0)));
                    if( ((Hashtable)obj).ContainsKey( (Client)obj1)){
                        Console.WriteLine("win");
                    }
                    else{
                        Console.WriteLine("Fail");
                    }
                    foreach( DictionaryEntry  i in (Hashtable)obj){
                        Console.WriteLine( ((Client)i.Key).id);
                    }
                    Console.ReadLine();
                    break;
            }
        }

        public static MemoryStream Ser(object obj){
            MemoryStream ms = new MemoryStream();
            BinaryFormatter formatter = new BinaryFormatter();
            formatter.Serialize(ms,obj);
            return ms;
        }

        public static object Deser(MemoryStream ms){
            BinaryFormatter formatter = new BinaryFormatter();
            return formatter.Deserialize(ms);
        }
    }

    [Serializable]
    class Client{
        public int id;
        public string name;
        public string email;

        public Client(){}
        public Client(int ID,string Name,string Email){
            id = ID;
            name = Name;
            email = Email;
        }
    }
}

注意:使用的时候加入前面的.NET中使用Mapping File 的API :)中提到了SharedMemory类
运行时分别运行两个,一个输入X,一个输入Y

这里,我把两个Client对象放到一个Hashtable中,再分别把这些个对象序列化,通过MappingFile传给另一个EXE程序.
再反序列化.结果,输出的是Fail,但是Hashtable中确实是有原始的Client对象..

结论:
通过这个例子,我发现,HashCode是和程序运行相关的,是相对于这个程序在当前运行期是唯一的.
所以了,我们如果想要把一个对象做为Hashtable中的Key同时把这个对象和这个Hashtable传给其它的应用程序(比如上面示例中的Client和Hashtalbe).请注意其对象的HashCode.:)

如果一定要传Hashtable过去.那么只要这个Hashtable的Key是.NET内置的数据类型,那照样可以正常使用:)

so,我前面文章中提到的那个结论(最上面有写)是错的.希望大家在使用中注意一下子.Have a good luck~

posted @ 2004-07-06 21:51 hbifts 阅读(1523) 评论(1) 编辑

ROR crackme :)

hoho,ROR终于开始招新了~

ROR is always interested in new talent...

http://61.153.51.35/forum/attach/2004/07/06/1040823-rorkgme1.zip

From nfo:
      This is the first Crackme of Team ROR. Try your best to make a keygen
      for it. No patch, no loader, keymaker only! If you crack it
      successfully and have interesting in ROR, please drop us a mail at
      rorteam@hotbox.ru, we will contact you.

from smth:
dump ok
vc7.0
sha1 found....
hacked upx....
music古香古色...
上面的那个水纹图像不错。 占用cpu so低。
ROR所出rls，一般都质量很好

posted @ 2004-07-06 20:27 hbifts 阅读(1214) 评论(1) 编辑

The return of the Soff.net :)

Good news:)

Soff.net . Welcome back, we miss you :)

发信人: soff (凡事都在一念之间), 信区: NewSoftClub
标  题: 珊瑚虫论坛
发信站: BBS 水木清华站 (Tue Jul  6 12:14:11 2004), 站内


        公网: http://soff.net/bbs
        教育: http://edu.soff.net/bbs

--
偶本 bt, 躬耕於 bit, 苟全性命於 bbs, 不求聞達於 mm...
                  ____ ____                  __
    _____ ____   / __// __/    ____   ___   / /_
   / ___// __ \ / /_ / /_     / __ \ / _ \ / __/
  (__  )/ /_/ // __// __/ _  / / / //  __// /_
 /____/ \____//_/  /_/   (_)/_/ /_/ \___/ \__/        珊瑚虫工作室[Coral Studio]


※ 来源:·BBS 水木清华站 smth.org·[FROM: 221.216.138.*]

posted @ 2004-07-06 20:24 hbifts 阅读(407) 评论(0) 编辑