252 lines
9.3 KiB
C#
252 lines
9.3 KiB
C#
using ryCommon;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace ryCommon
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{
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/// <summary>
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/// Hosts操作类
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/// </summary>
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public static class Hosts
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{
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/// <summary>
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/// 获取并转换hosts内容
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/// </summary>
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/// <param name="content">hosts内容</param>
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/// <returns></returns>
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public static List<HostInfo> GetHosts(string content)
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{
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var list = new List<HostInfo>();
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var from_list = content.Replace("\r", "").Replace("\t", " ").Split('\n');
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for (int i = 0; i < from_list.Length; i++)
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{
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var item = from_list[i].Trim();
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if (item.IndexOfEx("#") == 0) { list.Add(new HostInfo() { Comment=item }); continue; }
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int pos = item.IndexOfEx(" ");
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if (pos <= 0) {
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if (item.StartsWith("!", StringComparison.OrdinalIgnoreCase))
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{
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list.Add(new HostInfo() { IP = "", Domain = item.Substring(1), IsDel = true });
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}
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continue;
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}
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var ip = item.Substring(0, pos);//ip
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bool isDel = false;
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if(ip.StartsWith("!", StringComparison.OrdinalIgnoreCase))
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{
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isDel = true;ip = ip.Substring(1);
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}
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var domain = item.Substring(pos + 1).Trim();//域名
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list.Add(new HostInfo() {IP=ip,Domain=domain,IsDel=isDel });
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}
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return list;
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}
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/// <summary>
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/// 获取hosts并转换hosts内容
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/// </summary>
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/// <param name="list">hosts内容</param>
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/// <returns></returns>
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public static List<HostInfo> GetHosts()
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{
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var hosts_path = ryCommon.RyFiles.GetRealPath("<sys>\\drivers\\etc\\hosts");
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var content = ryCommon.RyFiles.ReadAllText(hosts_path).Trim();
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return GetHosts(content);
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}
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/// <summary>
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/// 追加内容到hosts里
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/// </summary>
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/// <param name="list">要追加的内容列表，每一行为ip 域名的格式</param>
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/// <returns>0表示无需新增,-1表示添加失败,1表示追加成功</returns>
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public static int AddHosts(string list)
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{
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return AddHosts(list,true);
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}
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/// <summary>
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/// write为true,追加内容到hosts里;为false,判断是否需要追加
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/// </summary>
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/// <param name="list">要追加的内容列表，每一行为ip 域名的格式</param>
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/// <param name="write">是否要写入,如果为false,则只判断是否需要追加,而不写入Hosts文件</param>
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/// <returns>0表示无需新增,-1表示添加失败,1表示追加成功</returns>
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public static int AddHosts(string list,bool write)
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{
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var hosts_path= ryCommon.RyFiles.GetRealPath("<sys>\\drivers\\etc\\hosts");
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var content = ryCommon.RyFiles.ReadAllText(hosts_path).Trim();
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var from_list = GetHosts(content);
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var _list = GetHosts(list);
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bool isAdd = false;//是否有增加数据到hosts里
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for (int i = 0; i < _list.Count; i++)
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{
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bool HaveRecord = false;
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for (int m = from_list.Count-1; m>0; m--) //去host文件里查找是否已含有该内容
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{
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if (from_list[m].Comment.Length > 0) { continue; }
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if(_list[i].Domain.ToLower()== from_list[m].Domain.ToLower())
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{
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if (_list[i].IP.Length == 0 && _list[i].IsDel)
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{
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from_list.RemoveAt(m);
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HaveRecord = true;
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}
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else
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{
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if (_list[i].IP != from_list[m].IP) //如果同样域名对应的ip不一样,则删除该项,然后再插入新的ip
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{
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from_list.RemoveAt(m);
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HaveRecord = false;
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}
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else
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{
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if (_list[i].IsDel) //如果ip和网址一致,并且标注为删除,则删除
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{
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from_list.RemoveAt(m);
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}
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HaveRecord = true;
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}
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}
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}
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}
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if(!HaveRecord)
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{
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isAdd = true;
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from_list.Add(_list[i]);
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}
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}
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if (isAdd)
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{
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if (write)
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{
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try
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{
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content = "";
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for (int i = 0; i < from_list.Count; i++)
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{
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if (content.Length > 0) { content += "\r\n"; }
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if (from_list[i].Comment.Length > 0)
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{
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content += from_list[i].Comment;
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}
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else
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{
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content += from_list[i].IP + "\t" + from_list[i].Domain;
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}
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}
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ryCommon.RyFiles.WriteAllText(hosts_path, content, Encoding.UTF8);
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}
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catch
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{
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return -1;
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}
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}
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}
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else
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{ return 0; }
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return 1;
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}
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/// <summary>
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/// 追加内容到hosts里
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/// </summary>
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/// <param name="item">要追加的内容</param>
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/// <returns>0表示无需新增,-1表示添加失败,1表示追加成功</returns>
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public static int AddHosts(HostInfo item)
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{
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return AddHosts(item.IP + "\t" + item.Domain);
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}
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/// <summary>
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/// 追加内容到hosts里
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/// </summary>
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/// <param name="ip">ip地址</param>
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/// <param name="domain">域名</param>
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/// <returns>0表示无需新增,-1表示添加失败,1表示追加成功</returns>
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public static int AddHosts(string ip,string domain)
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{
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return AddHosts(ip + "\t" + domain);
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}
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/// <summary>
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/// 从hosts文件里删除内容
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/// </summary>
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/// <param name="item">要删除的内容</param>
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/// <returns>0表示无需删除,-1表示添加失败,1表示删除成功</returns>
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public static int DelHosts(HostInfo item)
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{
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var hosts_path = ryCommon.RyFiles.GetRealPath("<sys>\\drivers\\etc\\hosts");
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var content = ryCommon.RyFiles.ReadAllText(hosts_path).Trim();
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var from_list = GetHosts(content);
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bool IsDel = false;
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for (int i = from_list.Count-1; i>=0; i++)
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{
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if(from_list[i].IP==item.IP && from_list[i].Domain.ToLower()==item.Domain.ToLower())
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{
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from_list.RemoveAt(i);
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IsDel = true;
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}
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else if (item.IP.Length==0 && from_list[i].Domain.ToLower() == item.Domain.ToLower())
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{
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from_list.RemoveAt(i);
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IsDel = true;
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}
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}
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var text = "";
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for (int i = 0; i < from_list.Count; i++)
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{
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if (text.Length > 0) { text += "\r\n"; }
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if(from_list[i].Comment.Length>0)
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{
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text += from_list[i].Comment;
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}
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else
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{
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text += from_list[i].IP+"\t"+ from_list[i].Domain;
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}
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}
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if (IsDel)
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{
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try
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{
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ryCommon.RyFiles.WriteAllText(hosts_path, text, Encoding.UTF8);
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}
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catch
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{
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return -1;
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}
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}
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else
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{ return 0; }
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return 1;
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}
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/// <summary>
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/// 从hosts文件里删除内容
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/// </summary>
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/// <param name="ip">ip地址</param>
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/// <param name="domain">域名</param>
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/// <returns>0表示无需删除,-1表示添加失败,1表示删除成功</returns>
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public static int DelHosts(string ip, string domain)
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{
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return DelHosts(new HostInfo() {IP=ip,Domain=domain });
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}
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}
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/// <summary>
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/// Host信息
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/// </summary>
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public class HostInfo
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{
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/// <summary>
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/// IP
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/// </summary>
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public string IP { get; set; } = "";
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/// <summary>
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/// 域名
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/// </summary>
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public string Domain { get; set; } = "";
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/// <summary>
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/// 注释
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/// </summary>
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public string Comment { get; set; } = "";
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/// <summary>
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/// 是否要删除
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/// </summary>
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public bool IsDel { get; set; } = false;
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}
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}
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