把网络上比较流行的纯真版ip数据库格式QQwry.Dat作为IP数据源来实现IP地址的查询显示。

  1 /******************************************************************
  2 ** File Name:IPScaner.cs
  3 ** Create Date:2004-12-27 20:10:28
  4 ** Modifier:
  5 ** Modify Date:
  6 ** Description:to scan the ip location from qqwry.dat
  7 ** Version: IPScaner 1.0.0
  8 ******************************************************************/
  9 using System;
 10 using System.IO;
 11 using System.Collections;
 12 using System.Text;
 13 using System.Text.RegularExpressions;
 14 namespace chat.Rules
 15 {
 16     /**//// <summary>
 17     /// to scan the ip location from qqwry.dat
 18     /// </summary>
 19     public class IPScaner
 20     {
 21         #region 私有成员
 22         private string dataPath;
 23         private string ip;
 24         private string country;
 25         private string local;
 26 
 27         private long firstStartIp=0;
 28         private long lastStartIp=0;
 29         private FileStream objfs = null;
 30         private long startIp=0;
 31         private long endIp=0;
 32         private int countryFlag=0;
 33         private long endIpOff=0;
 34         private string errMsg=null;
 35         #endregion
 36 
 37         #region 构造函数
 38             public IPScaner()
 39             {
 40                 //
 41                 // TODO: 在此处添加构造函数逻辑
 42                 //
 43             }
 44         #endregion
 45 
 46         #region 公共属性
 47             public string DataPath
 48             {
 49                 set{dataPath=value;}
 50             }
 51         public string IP
 52         {
 53             set{ip=value;}
 54         }
 55         public string Country
 56         {
 57             get{return country;}
 58         }
 59         public string Local
 60         {
 61             get{return local;}
 62         }
 63         public string ErrMsg
 64         {
 65             get{return errMsg;}
 66         }
 67         #endregion
 68 
 69         #region 搜索匹配数据
 70             private int QQwry()
 71             {
 72                 string pattern = @"(((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))\.){3}((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))";
 73                 Regex objRe = new Regex(pattern);
 74                 Match objMa = objRe.Match(ip);
 75                 if(!objMa.Success)
 76                 {
 77                     this.errMsg="IP格式错误";
 78                     return 4;
 79                 }
 80 
 81                 long ip_Int = this.IpToInt(ip);
 82                 int nRet=0;
 83                 if(ip_Int>=IpToInt("127.0.0.0")&&ip_Int<=IpToInt("127.255.255.255"))
 84                 {
 85                     this.country="本机内部环回地址";
 86                     this.local="";
 87                     nRet=1;
 88                 }
 89                 else if((ip_Int>=IpToInt("0.0.0.0")&&ip_Int<=IpToInt("2.255.255.255"))||(ip_Int>=IpToInt("64.0.0.0")&&ip_Int<=IpToInt("126.255.255.255"))||(ip_Int>=IpToInt("58.0.0.0")&&ip_Int<=IpToInt("60.255.255.255")))
 90                 {
 91                     this.country="网络保留地址";
 92                     this.local="";
 93                     nRet=1;
 94                 }
 95                 objfs =  new FileStream(this.dataPath, FileMode.Open, FileAccess.Read);
 96                 try
 97                 {
 98                     //objfs.Seek(0,SeekOrigin.Begin);
 99                     objfs.Position=0;
100                     byte[] buff = new Byte[8] ;
101                     objfs.Read(buff,0,8);
102                     firstStartIp=buff[0]+buff[1]*256+buff[2]*256*256+buff[3]*256*256*256;
103                     lastStartIp=buff[4]*1+buff[5]*256+buff[6]*256*256+buff[7]*256*256*256;
104                     long recordCount=Convert.ToInt64((lastStartIp-firstStartIp)/7.0);
105                     if(recordCount<=1)
106                     {
107                         country="FileDataError";
108                         objfs.Close();
109                         return 2;
110                     }
111                     long rangE=recordCount;
112                     long rangB=0;
113                     long recNO=0;
114                     while(rangB<rangE-1)
115                     {
116                         recNO=(rangE+rangB)/2;
117                         this.GetStartIp(recNO);
118                         if(ip_Int==this.startIp)
119                         {
120                             rangB = recNO;
121                             break;
122                         }
123                         if(ip_Int>this.startIp)
124                             rangB=recNO;
125                         else
126                             rangE=recNO;
127                     }
128                     this.GetStartIp(rangB);
129                     this.GetEndIp();
130                     if(this.startIp<=ip_Int&&this.endIp>=ip_Int)
131                     {
132                         this.GetCountry();
133                         this.local=this.local.Replace("（我们一定要解放台湾！！！）","");
134                     }
135                     else
136                     {
137                         nRet=3;
138                         this.country="未知";
139                         this.local="";
140                     }
141                     objfs.Close();
142                     return nRet;
143                 }
144                 catch
145                 {
146                     return 1;
147                 }
148 
149             }
150         #endregion
151 
152         #region IP地址转换成Int数据
153             private long IpToInt(string ip)
154             {
155                 char[] dot = new char[]{'.'};
156                 string [] ipArr = ip.Split(dot);
157                 if(ipArr.Length==3)
158                     ip=ip+".0";
159                 ipArr=ip.Split(dot);
160 
161                 long  ip_Int=0;
162                 long p1=long.Parse(ipArr[0])*256*256*256;
163                 long p2=long.Parse(ipArr[1])*256*256;
164                 long p3=long.Parse(ipArr[2])*256;
165                 long p4=long.Parse(ipArr[3]);
166                 ip_Int=p1+p2+p3+p4;
167                 return ip_Int;
168             }
169         #endregion
170 
171         #region int转换成IP
172             private string  IntToIP(long ip_Int)
173             {
174                 long seg1=(ip_Int&0xff000000)>>24;
175                 if(seg1<0)
176                     seg1+=0x100;
177                 long seg2=(ip_Int&0x00ff0000)>>16;
178                 if(seg2<0)
179                     seg2+=0x100;
180                 long seg3=(ip_Int&0x0000ff00)>>8;
181                 if(seg3<0)
182                     seg3+=0x100;
183                 long seg4=(ip_Int&0x000000ff);
184                 if(seg4<0)
185                     seg4+=0x100;
186                 string ip=seg1.ToString()+"."+seg2.ToString()+"."+seg3.ToString()+"."+seg4.ToString();
187 
188                 return ip;
189             }
190         #endregion
191 
192         #region 获取起始IP范围
193             private long GetStartIp(long recNO)
194             {
195                 long offSet = firstStartIp+recNO*7;
196                 //objfs.Seek(offSet,SeekOrigin.Begin);
197                 objfs.Position=offSet;
198                 byte [] buff = new Byte[7];
199                 objfs.Read(buff,0,7);
200 
201                 endIpOff=Convert.ToInt64(buff[4].ToString())+Convert.ToInt64(buff[5].ToString())*256+Convert.ToInt64(buff[6].ToString())*256*256;
202                 startIp=Convert.ToInt64(buff[0].ToString())+Convert.ToInt64(buff[1].ToString())*256+Convert.ToInt64(buff[2].ToString())*256*256+Convert.ToInt64(buff[3].ToString())*256*256*256;
203                 return startIp;
204             }
205         #endregion
206 
207         #region 获取结束IP
208             private long GetEndIp()
209             {
210                 //objfs.Seek(endIpOff,SeekOrigin.Begin);
211                 objfs.Position=endIpOff;
212                 byte [] buff = new Byte[5];
213                 objfs.Read(buff,0,5);
214                 this.endIp=Convert.ToInt64(buff[0].ToString())+Convert.ToInt64(buff[1].ToString())*256+Convert.ToInt64(buff[2].ToString())*256*256+Convert.ToInt64(buff[3].ToString())*256*256*256;
215                 this.countryFlag=buff[4];
216                 return this.endIp;
217             }
218         #endregion
219 
220         #region 获取国家/区域偏移量
221                  private string GetCountry()
222                  {
223                      switch(this.countryFlag)
224                      {
225                          case 1:
226                          case 2:
227                              this.country=GetFlagStr(this.endIpOff+4);
228                              this.local=( 1 == this.countryFlag )?" ":this.GetFlagStr(this.endIpOff+8);
229                              break;
230                          default:
231                              this.country=this.GetFlagStr(this.endIpOff+4);
232                              this.local=this.GetFlagStr(objfs.Position);
233                              break;
234                      }
235                      return " ";
236                  }
237         #endregion
238 
239         #region 获取国家/区域字符串
240                  private string GetFlagStr(long offSet)
241                  {
242                      int flag=0;
243                      byte [] buff = new Byte[3];
244                      while(1==1)
245                      {
246                          //objfs.Seek(offSet,SeekOrigin.Begin);
247                          objfs.Position=offSet;
248                          flag = objfs.ReadByte();
249                          if(flag==1||flag==2)
250                          {
251                              objfs.Read(buff,0,3);
252                              if(flag==2)
253                              {
254                                  this.countryFlag=2;
255                                  this.endIpOff=offSet-4;
256                              }
257                              offSet=Convert.ToInt64(buff[0].ToString())+Convert.ToInt64(buff[1].ToString())*256+Convert.ToInt64(buff[2].ToString())*256*256;
258                          }
259                          else
260                          {
261                              break;
262                          }
263                      }
264                      if(offSet<12)
265                          return " ";
266                      objfs.Position=offSet;
267                      return GetStr();
268                  }
269         #endregion
270 
271         #region GetStr
272             private string GetStr()
273             {
274                 byte lowC=0;
275                 byte upC=0;
276                 string str="";
277                 byte[] buff =  new byte[2];
278                 while(1==1)
279                 {
280                     lowC= (Byte)objfs.ReadByte();
281                     if(lowC==0)
282                         break;
283                     if(lowC>127)
284                     {
285                         upC=(byte)objfs.ReadByte();
286                         buff[0]=lowC;
287                         buff[1]=upC;
288                         System.Text.Encoding enc = System.Text.Encoding.GetEncoding("GB2312");
289                         str+=enc.GetString(buff);
290                     }
291                     else
292                     {
293                         str+=(char)lowC;
294                     }
295                 }
296                 return str;
297             }    
298         #endregion
299 
300         #region 获取IP地址
301             public string IPLocation()
302             {
303                 this.QQwry();
304                 return this.country+this.local;
305             }
306         public string IPLocation(string dataPath,string ip)
307         {
308             this.dataPath=dataPath;
309             this.ip=ip;
310             this.QQwry();
311             return  this.country+this.local;
312         }
313         #endregion
314 
315
316     }
317 }
调用方式：
 1 #region 测试地址搜索
 2             IPScaner objScan = new IPScaner();
 3             string ip="221.224.205.13";
 4             objScan.DataPath=@"E:\QQWry.Dat";
 5             objScan.IP=ip;
 6             string addre=objScan.IPLocation();
 7             string err=objScan.ErrMsg;
 8 
 9 #endregion
10