feat: audit log of admin writes, sign-ins and key creation, with an audit tab [CI]

backend/src/MoShiro.Backend.Api/Common/Guards.cs

@@ -1,4 +1,5 @@
 using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Routing;
 using Microsoft.Extensions.DependencyInjection;
 using MoShiro.Backend.Application;
 using MoShiro.Protocol;
@@ -88,6 +89,19 @@ public static class CapabilityGuard
             }
         }
 
+        if (principal.Kind != PrincipalKind.Anonymous && !HttpMethods.IsGet(http.Request.Method) && !HttpMethods.IsHead(http.Request.Method) && !HttpMethods.IsOptions(http.Request.Method))
+        {
+            // 写操作都记审计：响应发完之后才知道结果，所以放在 OnCompleted 里
+            string action = http.GetEndpoint()?.Metadata.GetMetadata<IEndpointNameMetadata>()?.EndpointName ?? http.Request.Path.Value ?? "";
+            string? target = http.Request.RouteValues.Count == 0 ? null : string.Join(' ', http.Request.RouteValues.Where(v => v.Value is not null).Select(v => v.Key + "=" + v.Value));
+            http.Response.OnCompleted(() =>
+            {
+                http.Items.TryGetValue(AuditEndpoints.DetailItem, out object? detail);
+                return http.RequestServices.GetRequiredService<AuditService>()
+                    .RecordAsync(principal, action, target, detail as string, http.Connection.RemoteIpAddress?.ToString(), http.Response.StatusCode < 400).AsTask();
+            });
+        }
+
         return await next(context);
     }
 }

backend/src/MoShiro.Backend.Api/Common/Mappers.cs

@@ -156,6 +156,8 @@ public static class Mappers
     public static JoinTokenDto ToDto(JoinTokenInfo t) =>
         new(t.Id, t.Note, t.Labels, t.AutoApprove, t.MaxUses, t.Uses, Time(t.ExpiresAtMs), Time(t.RevokedAtMs), Time(t.CreatedAtMs), JoinTokenService.RoleOf(t.Kind), t.CreatedBy);
 
+    public static AuditDto ToDto(AuditRecord a) => new(a.Id, Time(a.AtMs), a.Actor, a.Method, a.Action, a.Target, a.Detail, a.Remote, a.Success);
+
     public static PasskeyDto ToDto(PasskeyRecord p) => new(p.Id, p.Name, Time(p.CreatedAtMs), Time(p.LastUsedAtMs), p.Transports);
 
     public static ApiTokenDto ToDto(ApiTokenRecord t) => new(t.Id, t.Name, t.Capabilities, Time(t.CreatedAtMs), Time(t.LastUsedAtMs), Time(t.ExpiresAtMs), Time(t.RevokedAtMs));