feat: 目前完成了订阅功能和 Xray-Core 的更新管理.

2025-01-07 09:50:02 +08:00
parent 78c7db692a
commit 99cb0a03a5
22 changed files with 1153 additions and 0 deletions
@@ -0,0 +1,203 @@
+using System.Buffers.Text;
+using System.Net;
+using System.Text;
+using Proxd_man.Config.Outbound;
+using Proxd_man.Config.Stream;
+
+namespace Proxd_man.ShareLink;
+
+/// <summary>
+/// Shadowsocks 分享链接解析器.
+///
+/// 遵循了 Shadowsocks 的 <a href="https://github.com/shadowsocks/shadowsocks-org/wiki/SIP002-URI-Scheme"> SIP002 URI Scheme 规范</a>.
+/// </summary>
+public class ShadowSocksLinkParser : IShareLinkParser
+{
+    public bool CanParse(string shareLink)
+    {
+        return shareLink.StartsWith("ss://", StringComparison.CurrentCultureIgnoreCase);
+    }
+
+    public BaseOutboundSetting Parse(string shareLink)
+    {
+        var content = shareLink[5..];
+        if (content.Length == 0)
+        {
+            throw new InvalidShareLinkException("Shadowsocks 分享链接内容为空.");
+        }
+
+        // 按照顺序, 先解析 userInfo.
+        var userInfoEndAt = content.IndexOf('@');
+        if (userInfoEndAt == -1)
+        {
+            throw new InvalidShareLinkException("Shadowsocks 分享链接中未包含用户信息.");
+        }
+        
+        var userInfo = content[..userInfoEndAt];
+        string userInfoContent;
+        
+        if (userInfo.Contains(':'))
+        {
+            userInfoContent = userInfo.Trim();
+        }
+        else
+        {
+            if (!Base64.IsValid(userInfo))
+            {
+                throw new InvalidShareLinkException("Shadowsocks 分享链接中的用户信息不是有效的 Base64 字符串.");
+            }
+            
+            var userInfoBytes = Convert.FromBase64String(userInfo);
+            userInfoContent = Encoding.UTF8.GetString(userInfoBytes);
+        }
+
+        var userInfoParts = userInfoContent.Split(':', 2);
+        var method = userInfoParts[0];
+        var password = userInfoParts[1];
+        
+        // 开始解析 userInfo 后面的内容.
+        content = content[(userInfoEndAt + 1)..];
+        
+        var pathSeparatorAt = content.IndexOf('/');
+        var fragmentSeparatorAt = content.IndexOf('#');
+        int hostEndAt;
+
+        // 首先检查一下合法性, 遵循这些规则:
+        // 如果有 pathSeparator, 则检查是否有 "?", 且是否位于 pathSeparator 之后, 否则抛出异常.
+        // 其次, fragmentSeparator 只能出现在 pathSeparator 之后.
+        
+        if (pathSeparatorAt != -1)
+        {
+            if (content.Contains('?') && content.IndexOf('?') < pathSeparatorAt)
+            {
+                throw new InvalidShareLinkException("Shadowsocks 分享链接中的 path 部分不合法.");
+            }
+            
+            if (fragmentSeparatorAt != -1 && fragmentSeparatorAt < pathSeparatorAt)
+            {
+                throw new InvalidShareLinkException("Shadowsocks 分享链接中的 tag 部分不合法.");
+            }
+            
+            hostEndAt = pathSeparatorAt;
+        } else if (fragmentSeparatorAt != -1)
+        {
+            hostEndAt = fragmentSeparatorAt;
+        }
+        else
+        {
+            hostEndAt = content.Length;
+        }
+
+        if (content[pathSeparatorAt..].Contains("?plugin="))
+        {
+            throw new InvalidShareLinkException("Shadowsocks 分享链接暂时不支持 plugin 参数.");
+        }
+
+        var name = fragmentSeparatorAt != -1 ? null :
+            // 需要 Url 解码
+            WebUtility.UrlDecode(content[(fragmentSeparatorAt + 1)..].Trim());
+        
+        var hostContent = content[..hostEndAt];
+        var hostPortParts = hostContent.Split(':');
+        switch (hostPortParts.Length)
+        {
+            case > 2:
+                throw new InvalidShareLinkException("Shadowsocks 分享链接中的 host 部分不合法.");
+            case < 2:
+                throw new InvalidShareLinkException("Shadowsocks 分享链接中的 host 部分不包含端口.");
+        }
+        
+        var host = hostPortParts[0];
+        if (!int.TryParse(hostPortParts[1], out var port))
+        {
+            throw new InvalidShareLinkException("Shadowsocks 分享链接中的端口不是一个数字.");
+        }
+
+        if (port is < 0 or > 65535)
+        {
+            throw new InvalidShareLinkException("Shadowsocks 分享链接中的端口超出了端口范围.");
+        }
+        
+        return new ShadowSocksOutboundSetting
+        {
+            Protocol = OutboundProtocolType.Shadowsocks,
+            Name = name ?? $"{host}:{port}",
+            StreamSetting = new RawStreamSetting(),
+
+            Address = host,
+            Port = port,
+            Method = method,
+            Password = password
+        };
+    }
+}
+
+/// <summary>
+/// Shadowsocks 分享链接解析器.
+/// 
+/// 这个版本使用 Uri 进行解析, 而不是手搓解析过程.
+///
+/// 遵循了 Shadowsocks 的 <a href="https://github.com/shadowsocks/shadowsocks-org/wiki/SIP002-URI-Scheme"> SIP002 URI Scheme 规范</a>.
+/// </summary>
+public class ShadowSocksLinkParserV2 : IShareLinkParser
+{
+    public bool CanParse(string shareLink)
+    {
+        return shareLink.StartsWith("ss://", StringComparison.CurrentCultureIgnoreCase);
+    }
+
+    public BaseOutboundSetting Parse(string shareLink)
+    {
+        var shareLinkUri = new Uri(shareLink);
+
+        var userInfoContent = shareLinkUri.UserInfo;
+
+        if (!userInfoContent.Contains(':'))
+        {
+            if (!Base64.IsValid(userInfoContent))
+            {
+                throw new InvalidShareLinkException("Shadowsocks 分享链接中的用户信息不是有效的 Base64 字符串.");
+            }
+            
+            var userInfoBytes = Convert.FromBase64String(userInfoContent);
+            userInfoContent = Encoding.UTF8.GetString(userInfoBytes);
+        }
+        
+        var userInfoParts = userInfoContent.Split(':');
+        if (userInfoParts.Length != 2)
+        {
+            throw new InvalidShareLinkException("Shadowsocks 分享链接中的 userInfo 不合法.");
+        } 
+        
+        var method = WebUtility.UrlDecode(userInfoParts[0]);
+        var password = WebUtility.UrlDecode(userInfoParts[1]);
+        
+        var host = shareLinkUri.Host;
+        var port = (ushort) shareLinkUri.Port;
+        
+        return new ShadowSocksOutboundSetting
+        {
+            Protocol = OutboundProtocolType.Shadowsocks,
+            Name = string.IsNullOrEmpty(shareLinkUri.Fragment) ? $"{host}:{port}" : WebUtility.UrlDecode(shareLinkUri.Fragment.Trim()),
+            StreamSetting = new RawStreamSetting(),
+
+            Address = host,
+            Port = port,
+            Method = method,
+            Password = password
+        };
+    }
+}
+
+public class VMessLinkParser : IShareLinkParser
+{
+    public bool CanParse(string shareLink)
+    {
+        return shareLink.StartsWith("vmess://", StringComparison.CurrentCultureIgnoreCase);
+    }
+
+    public BaseOutboundSetting Parse(string shareLink)
+    {
+        throw new NotImplementedException();
+    }
+}
@@ -0,0 +1,47 @@
+using Proxd_man.Config.Outbound;
+
+namespace Proxd_man.ShareLink;
+
+public class ShareLinkParser
+{
+
+    private static readonly Lazy<List<IShareLinkParser>> parser = new(() => [
+        new ShadowSocksLinkParserV2()
+    ]);
+    
+    public static BaseOutboundSetting Parse(string shareLink)
+    {
+        foreach (var p in parser.Value.Where(p => p.CanParse(shareLink)))
+        {
+            return p.Parse(shareLink);
+        }
+
+        throw new InvalidShareLinkException("不支持的分享链接: " + shareLink);
+    }
+
+}
+
+public interface IShareLinkParser
+{
+
+    /// <summary>
+    /// 检查该分享链接是否可以被该实现解析.
+    ///
+    /// 该方法只需要检查是否可以解析, 并不需要检查是否正确.
+    /// </summary>
+    /// <param name="shareLink">要尝试解析的出站配置分享链接.</param>
+    /// <returns>如果可以被实现解析, 则返回 true.</returns>
+    bool CanParse(string shareLink);
+
+    
+    /// <summary>
+    /// 将分享链接解析为出站配置.
+    /// </summary>
+    /// <param name="shareLink">要解析的分享链接.</param>
+    /// <returns>返回分享链接解析得出的出站配置.</returns>
+    /// <exception cref="InvalidShareLinkException">当分享链接错误导致无法解析时抛出异常.</exception>
+    BaseOutboundSetting Parse(string shareLink);
+    
+}
+
+public class InvalidShareLinkException(string message, Exception? cause = null) : Exception(message, cause);