/// <summary>
/// When implemented in a derived class, checks authorization for the subject in the specified context to perform the specified action on the specified resource.
/// </summary>
/// <param name="context">The authorization context that contains the subject, resource, and action for which authorization is to be checked.</param>
/// <returns>
/// true if the subject is authorized to perform the specified action on the specified resource; otherwise, false.
/// </returns>
public override bool CheckAccess(AuthorizationContext context)
{
bool result = false;
// 如果沒有Resource和Operation的情況下，表示可以看
if (context.Resource.Count == 0 && context.Action.Count == 0)
{
return true;
}
if (context.Principal.Identity.IsAuthenticated)
{
string resourceStr = context.Resource.First().Value;
string operationStr = context.Action.First().Value;
ResourceOperationEnum operation = (ResourceOperationEnum)
Enum.Parse(typeof(ResourceOperationEnum), operationStr);
ResourceOperation resourceOperation = new ResourceOperation()
{
ResourceName = resourceStr,
Operation = operation
};
var rolesName = context.Principal.FindAll(x => x.Type == ClaimTypes.Role)
.Select(x => x.Value).ToArray();
result = CheckAccess(context, resourceOperation, rolesName);
}
return result;
}
/// <summary>
/// 驗證是否有權限使用某個資源
/// </summary>
/// <param name="resource">資源</param>
/// <param name="roleId">要驗證的群組Id</param>
/// <returns>是否有權限</returns>
public bool Authorize(ResourceOperation resource, string roleId)
{
bool authorized = false;
authorized = uow.Repository<RolesOperationPermission>().Reads().Where(x => x.RoleId == roleId &&
x.ResourceName == resource.ResourceName && (x.Operation & resource.Operation) == resource.Operation).Count() > 0;
return authorized;
}
/// <summary>
/// 驗證是否有權限使用某個資源
/// </summary>
/// <param name="resource">資源</param>
/// <param name="roleNames">要驗證的群組名稱</param>
/// <returns>是否有權限</returns>
public bool Authorize(ResourceOperation resource, string[] roleNames)
{
bool authorized = false;
var roleIds = GetRoleIdFromRoleNames(roleNames);
foreach (var item in roleIds)
{
authorized = Authorize(resource, item);
if (authorized == true)
{
break;
}
}
return authorized;
}
/// <summary>
/// 依照內容建立出AuthorizationContext
/// </summary>
/// <param name="principal">目前的Principal</param>
/// <param name="resourceOperation">目前要驗證的ResourceOperation</param>
/// <returns>AuthorizationContext</returns>
public AuthorizationContext CreateAuthorizationContext(ClaimsPrincipal principal, ResourceOperation resourceOperation)
{
var actionClaims = new Collection<Claim>();
var resourceClaims = new Collection<Claim>();
if (resourceOperation != null)
{
actionClaims.Add(new Claim(ActionType, resourceOperation.Operation.ToString()));
resourceClaims.Add(new Claim(ResourceType, resourceOperation.ResourceName));
}
return new AuthorizationContext(
principal,
resourceClaims,
actionClaims);
}
/// <summary>
/// 組合出AuthorizationContext交給ClaimsAuthorizationManager去做是否有權限的判斷
/// </summary>
/// <param name="principal">目前的Principal</param>
/// <param name="resourceOperation">要檢查的ResourceOperation</param>
/// <returns>true，表示有權限，要不然就是fals</returns>
public bool CheckAccess(ClaimsPrincipal principal, ResourceOperation resourceOperation)
{
var authorisationContext = CreateAuthorizationContext(principal, resourceOperation);
return AuthorizationManager.CheckAccess(authorisationContext);
}
/// <summary>
/// 新增某一筆的權限到Role Id
/// </summary>
/// <param name="roleId">要被新增的Role Id</param>
/// <param name="resourcOperation">權限內容</param>
private void AddPemissionToRole(string roleId, ResourceOperation resourcOperation)
{
uow.Repository<RolesOperationPermission>().Create(new RolesOperationPermission()
{
Operation = resourcOperation.Operation,
ResourceName = resourcOperation.ResourceName,
RoleId = roleId
});
}
/// <summary>
/// 取得某一筆RoleId的權限
/// </summary>
/// <param name="roleId">要搜索的role Id</param>
/// <returns>擁有的權限</returns>
public List<ResourceOperation> GetResourceOperationForRole(string roleId)
{
var result = new List<ResourceOperation>();
foreach (var item in GetRolesPermissionForRole(roleId))
{
var temp = new ResourceOperation();
temp.Operation = item.Operation;
temp.ResourceName = item.ResourceName;
result.Add(temp);
}
return result;
}
/// <summary>
/// 檢查是否有權限使用某個ResourceOperation
/// </summary>
/// <param name="context">目前的AuthorizationContext</param>
/// <param name="resourceOperation">要驗證的ResourceOperation</param>
/// <param name="rolesName">目前使用者的Role</param>
/// <returns>true，表示有權限，不然則是false</returns>
public abstract bool CheckAccess(AuthorizationContext context,
ResourceOperation resourceOperation, string[] rolesName);
/// Duran 當初alan設計的架構是多一層，避免core被綁死，但起專案沒有比較快，需要起專案會有兩個方法：
/// 1. 用原架構起，但與資料庫資料庫綁死，那不如寫死在這邊。
/// 2. 不同的資料庫結構，這段一樣要重寫，加入不同資料庫後，在重新匯入改model，步驟繁瑣
/// 目前直接綁資料庫與model，之後起下一個專案方便。
/// TODO: 需要重購:將data access層抽出重寫?會自動產生資料庫架構?(需要在規劃與思考)。
/// <summary>
/// 傳入parse出來的ResourceOperation，方便在做處理
/// 應該是用來記錄操作紀錄用的
/// </summary>
/// <param name="resourceOpertation">傳入的ResourceOperation</param>
/// <param name="httpContext">The HTTP context.</param>
protected virtual void ProcessResourceOperation(ResourceOperation resourceOpertation, HttpContextBase httpContext)
{
var currentIdentity = httpContext.User.Identity as ClaimsIdentity;
if (currentIdentity.FindFirst(ClaimTypes.NameIdentifier) != null)
{
var routeData = httpContext.Request.RequestContext.RouteData;
var area = routeData.Values.ContainsKey("area") == true ? routeData.GetRequiredString("area") : string.Empty;
var controller = routeData.GetRequiredString("controller");
var action = routeData.GetRequiredString("action");
var operationLog = new UserOperationLog()
{
Area = area,
Action = action,
Controller = controller,
VisitDateTime = DateTime.Now,
RawUrl = httpContext.Request.RawUrl,
UserId = currentIdentity.FindFirst(ClaimTypes.NameIdentifier).Value,
IP = httpContext.Request.ServerVariables["REMOTE_ADDR"]
};
if (resourceOpertation != null)
{
operationLog.Operation = resourceOpertation.Operation;
operationLog.Resource = resourceOpertation.ResourceName;
operationLog.ResourceName = resourceOpertation.DisplayNameWithParent;
}
else
{
var siteMap = SiteMaps.Current.RootNode.Descendants.Where(x =>
x.Controller == controller && x.Area == area && x.Action == action).FirstOrDefault();
var resourceName = string.Empty;
if (siteMap != null)
{
resourceName = siteMap.Title;
if (siteMap.ParentNode != null)
{
resourceName = siteMap.ParentNode.Title + "/" + resourceName;
}
}
operationLog.ResourceName = resourceName;
}
DB.Repository<UserOperationLog>().Create(operationLog);
DB.Save();
}
}
