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134 lines
5.2 KiB
134 lines
5.2 KiB
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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using Utils.Security;
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namespace Utils.Files
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{
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public class SafeConfig
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{
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/// <summary>
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/// 向指定的加密文件中添加键值对。
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/// <para>如果键已经存在，则为更新</para>
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/// <para>如果文件不存在，则创建一个。路径必须存在</para>
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/// </summary>
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/// <param name="fileName_pathAndFileName">路径与文件名</param>
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/// <param name="password">密码。8位：不够则补全，多了则截断</param>
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/// <param name="key">键</param>
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/// <param name="value">值</param>
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public static void AddAndSaveConfig(string fileName_pathAndFileName, string password, string key, string value)
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{
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password = CheckPassword(password);
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var configs = GetAllConfigs(fileName_pathAndFileName, password);
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if (configs.Keys.Contains(key))
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configs[key] = value;
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else
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configs.Add(key, value);
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Save(configs, fileName_pathAndFileName, password);
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}
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/// <summary>
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/// 向指定的加密文件中添加键值对。
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/// <para>如果键已经存在，则为更新</para>
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/// <para>如果文件不存在，则创建一个。路径必须存在</para>
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/// </summary>
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/// <param name="fileName_pathAndFileName">路径与文件名</param>
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/// <param name="password">密码。8位：不够则补全，多了则截断</param>
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/// <param name="configs">要添加的键值对</param>
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public static void AddAndSaveConfig(string fileName_pathAndFileName, string password, Dictionary<string, string> configs)
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{
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password = CheckPassword(password);
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var all = GetAllConfigs(fileName_pathAndFileName, password);
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foreach (var item in configs) {
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if (all.Keys.Contains(item.Key))
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all[item.Key] = item.Value;
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else
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all.Add(item.Key, item.Value);
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}
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Save(all, fileName_pathAndFileName, password);
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}
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/// <summary>
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/// 获取加密文件的键值对信息。【文件可以不存在】
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/// </summary>
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/// <param name="fileName_pathAndFileName">文件路径和文件名</param>
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/// <param name="password">密码。8位：不够则补全，多了则截断</param>
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/// <returns>键值对信息</returns>
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public static Dictionary<string, string> GetAllConfigs(string fileName_pathAndFileName, string password)
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{
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Dictionary<string, string> all = new Dictionary<string, string>();
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var value = GetDecryptConfigFile(fileName_pathAndFileName, password);
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var configs = value.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
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foreach (var item in configs) {
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if (item.StartsWith(Separator))//忽略键为空的行
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continue;
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if (!item.Contains(Separator))//忽略没有分隔符的行
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continue;
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var pairs = item.Split(new string[] { Separator }, StringSplitOptions.RemoveEmptyEntries);
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if (pairs.Count() > 0) {
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all.Add(pairs.ElementAt(0), pairs.Count() > 1 ? pairs.ElementAt(1) : string.Empty);
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}
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}
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return all;
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}
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/// <summary>
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/// 将键值对加密后保存。密码必须为8位。
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/// <para>文件不存在则创建。路径必须存在。</para>
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/// </summary>
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/// <param name="configs">键值对</param>
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/// <param name="fileName_pathAndFileName">文件路径和文件名</param>
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/// <param name="password">8位密码</param>
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private static void Save(Dictionary<string, string> configs, string fileName_pathAndFileName, string password)
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{
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string file = string.Empty;
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foreach (var item in configs) {
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file += item.Key + Separator + item.Value + Environment.NewLine;
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}
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EncryptSave(fileName_pathAndFileName, password, file);
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}
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/// <summary>
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/// 获取解密文件
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/// </summary>
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/// <param name="fileName_pathAndFileName">文件路径和文件名</param>
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/// <param name="password">密码。8位：不够则补全，多了则截断</param>
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/// <returns>解密后的文件</returns>
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public static string GetDecryptConfigFile(string fileName_pathAndFileName, string password)
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{
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password = CheckPassword(password);
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var source = ReadWriteFile.ReadFile(fileName_pathAndFileName);
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if (string.IsNullOrEmpty(source))
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return string.Empty;
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return SecurityUtil.ChangeBack(source, password);
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}
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/// <summary>
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/// 将指定内容，加密后保存为一个文件(如果存在，则重写；否则新建)
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/// </summary>
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/// <param name="fileName_pathAndFileName">文件路径和文件名</param>
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/// <param name="password">密码。8位：不够则补全，多了则截断</param>
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/// <param name="content">要加密并保存的文件</param>
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public static void EncryptSave(string fileName_pathAndFileName, string password, string content)
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{
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var saveFile = SecurityUtil.Change(content, password);
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ReadWriteFile.WriteFile(fileName_pathAndFileName, saveFile);
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}
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private static string CheckPassword(string password)
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{
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if (string.IsNullOrEmpty(password))
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return DefaultPassword;
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if (password.Length == 8)
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return password;
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if (password.Length > 8)
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return password.Substring(0, 8);
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return password + DefaultPassword.Substring(0, 8 - password.Length);
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}
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private static string DefaultPassword = "ρ☉〩＄℡№◆↙";//必须为8位。一经使用，不许更改
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private static string Separator = "⊙丷▼☆↘ωα";
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}
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}
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