feat: 添加DNS解析功能及相关配置项

Config.cs

@@ -1,4 +1,4 @@
-using System.Text.Encodings.Web;
+using System.Text.Encodings.Web;
 using System.Text.Json;
 using System.Text.Unicode;
 
@@ -63,5 +63,11 @@ namespace MegghysAPI
         public string MinIOSecretKey { get; set; } = "Nko5azOSUiYgOUeLsj8hLxGz4cKC8XOcH0VS7lWq";
         public string MinIORegion { get; set; } = "cn-main";
         public string MinIOBucket { get; set; } = "general";
+        
+        // DNS解析配置
+        public string DnsResolverAccountId { get; set; } = "720341";
+        public string DnsResolverAkId { get; set; } = "720341_30798028364391424";
+        public string DnsResolverAkSecret { get; set; } = "0739b7584ab54c1b9585f10594af0cd0";
+        public string DnsResolverEndpoint { get; set; } = "https://223.5.5.5/resolve";
     }
 }

Controllers/PublicController.cs

@@ -1,11 +1,109 @@
-using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc;
+using System.Security.Cryptography;
+using System.Text;
+using System.Text.Json;
+using System.Text.Json.Serialization;
 
 namespace MegghysAPI.Controllers
 {
+    public class DnsRecord
+    {
+        [JsonPropertyName("name")]
+        public string Name { get; set; } = string.Empty;
+        
+        [JsonPropertyName("type")]
+        public int Type { get; set; }
+        
+        [JsonPropertyName("TTL")]
+        public int Ttl { get; set; }
+        
+        [JsonPropertyName("data")]
+        public string Data { get; set; } = string.Empty;
+    }
+
+    public class DnsResponse
+    {
+        [JsonPropertyName("Status")]
+        public int Status { get; set; }
+        
+        [JsonPropertyName("TC")]
+        public bool Tc { get; set; }
+        
+        [JsonPropertyName("RD")]
+        public bool Rd { get; set; }
+        
+        [JsonPropertyName("RA")]
+        public bool Ra { get; set; }
+        
+        [JsonPropertyName("AD")]
+        public bool Ad { get; set; }
+        
+        [JsonPropertyName("CD")]
+        public bool Cd { get; set; }
+        
+        [JsonPropertyName("Question")]
+        public List<Dictionary<string, object>> Question { get; set; } = new();
+        
+        [JsonPropertyName("Answer")]
+        public List<DnsRecord>? Answer { get; set; }
+    }
+
+    public class DnsRequest
+    {
+        public string Domain { get; set; } = string.Empty;
+        public string RecordType { get; set; } = "A";
+    }
     [Route("api/public")]
     [ApiController]
     public class PublicController : MControllerBase
     {
+        private static readonly HttpClient _httpClient = new();
+
+        private static string CalculateKey(string accountId, string akSecret, long timestamp, string qname, string akId)
+        {
+            var input = $"{accountId}{akSecret}{timestamp}{qname}{akId}";
+            using var sha256 = SHA256.Create();
+            var hashBytes = sha256.ComputeHash(Encoding.UTF8.GetBytes(input));
+            return BitConverter.ToString(hashBytes).Replace("-", "").ToLower();
+        }
+
+        [HttpPost("resolve-dns")]
+        public static async Task<IActionResult> ResolveDns([FromBody] DnsRequest request)
+        {
+            try
+            {
+                var config = Config.Instance;
+                var accountId = config.DnsResolverAccountId;
+                var akId = config.DnsResolverAkId;
+                var akSecret = config.DnsResolverAkSecret;
+                var endpoint = config.DnsResolverEndpoint;
+
+                if (string.IsNullOrEmpty(accountId) || string.IsNullOrEmpty(akId) || string.IsNullOrEmpty(akSecret) || string.IsNullOrEmpty(endpoint))
+                {
+                    return new BadRequestObjectResult("DNS解析配置不完整。");
+                }
+
+                var timestamp = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
+                var key = CalculateKey(accountId, akSecret, timestamp, request.Domain, akId);
+
+                var url = $"{endpoint}?name={Uri.EscapeDataString(request.Domain)}&type={request.RecordType}&uid={accountId}&ak={akId}&key={key}&ts={timestamp}";
+
+                Logs.Info($"正在向 {url} 发起DNS请求");
+
+                var response = await _httpClient.GetAsync(url);
+                response.EnsureSuccessStatusCode();
+
+                var content = await response.Content.ReadAsStringAsync();
+                var dnsResponse = JsonSerializer.Deserialize<DnsResponse>(content);
+
+                return new OkObjectResult(dnsResponse);
+            }
+            catch (Exception ex)
+            {
+                Logs.Error($"解析DNS记录时出错: {ex.Message}");
+                return new StatusCodeResult(500);
+            }
+        }
         [HttpGet("header")]
         public IActionResult Header(bool? order = false)
         {

Data/Config.json

@@ -7,5 +7,11 @@
   "MinIOAccessKey": "RBzbElm21lf7sy7wK7wG",
   "MinIOSecretKey": "Nko5azOSUiYgOUeLsj8hLxGz4cKC8XOcH0VS7lWq",
   "MinIORegion": "cn-main",
-  "MinIOBucket": "general"
+  "MinIOBucket": "general",
+  "DnsResolver": {
+    "AccountId": "720341",
+    "AkId": "720341_30798028364391424",
+    "AkSecret": "0739b7584ab54c1b9585f10594af0cd0",
+    "Endpoint": "https://223.5.5.5/resolve"
+  }
 }