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Http/SignValidationAttribute.cs

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+// Filters/SignValidationFilter.cs
+
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Filters;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace ACBuildService.Filters;
+
+[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method)]
+public class SignValidationAttribute : Attribute, IAsyncActionFilter
+{
+    public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
+    {
+        // 检查请求是否包含 form-data
+        if (context.HttpContext.Request.HasFormContentType)
+        {
+            var form = context.HttpContext.Request.Form;
+
+            // 尝试从表单中获取 Sign
+            if (form.TryGetValue("Sign", out var signValue))
+            {
+                if (!signValue.ToString().Equals(App.Settings.Password))
+                {
+                    // 验证失败，直接返回错误
+                    context.Result = new ObjectResult(new ResponseData<string>
+                    {
+                        Code = (int)ErrorCode.ArgsError,
+                        Data = "sign is error"
+                    });
+                    return;
+                }
+            }
+            else
+            {
+                // 没有 Sign 字段
+                context.Result = new ObjectResult(new ResponseData<string>
+                {
+                    Code = (int)ErrorCode.ArgsError,
+                    Data = "sign is null"
+                });
+                return;
+            }
+        }
+        else
+        {
+            context.Result = new ObjectResult(new ResponseData<string>
+            {
+                Code = (int)ErrorCode.ArgsError,
+                Data = "请求格式必须是 form-data"
+            });
+            return;
+        }
+
+        // 验证通过，继续执行 Action
+        await next();
+    }
+}