public async Task HandleAsync(AuthorizationHandlerContext context)
{
var isAuthenticated = context.User?.Identity?.IsAuthenticated;
if (isAuthenticated == true)
{
// 注意：令牌失效，需返回401。默认返回403
//if (context.Resource is AuthorizationFilterContext)
//{
// var httpContext = (context.Resource as AuthorizationFilterContext).HttpContext;
//}
var httpContext = _httpContextAccessor?.HttpContext;
if (httpContext == null)
{
context.Fail();
return;
}
// https://stackoverflow.com/questions/51119926/jwt-authentication-usermanager-getuserasync-returns-null
// default the value of UserIdClaimType is ClaimTypes.NameIdentifier
var identityId = httpContext?.User?.FindFirstValue(ClaimTypes.NameIdentifier);
string token = httpContext.Request.Headers["Authorization"];
if (string.IsNullOrWhiteSpace(token))
{
token = httpContext.Request.Query["access_token"];
}
if (string.IsNullOrWhiteSpace(identityId) || string.IsNullOrWhiteSpace(token) || !int.TryParse(identityId, out int userId) || userId <= 0)
{
httpContext.Response.StatusCode = StatusCodes.Status401Unauthorized;
}
else
{
string path;
if (httpContext.GetEndpoint() is RouteEndpoint endpoint && endpoint != null)
{
path = endpoint.RoutePattern.RawText;
}
else
{
path = httpContext.Request?.Path.Value;
}
path = $"{httpContext.Request.Method}:/{path?.Trim().Trim('/')}";
// 访问期间验证令牌并自动续签
if (!_workContext.ValidateToken(userId, token.Substring($"{JwtBearerDefaults.AuthenticationScheme} ".Length).Trim(), out int statusCode, path))
{
if (statusCode != StatusCodes.Status403Forbidden)
{
httpContext.Response.StatusCode = StatusCodes.Status401Unauthorized;
}
}
}