// ====================================================================
// private メンバー関数
// ====================================================================
// --------------------------------------------------------------------
// ヘッダーの認証トークンからユーザー Id を取得
// --------------------------------------------------------------------
private String?GetUserIdFromHeader()
{
// Authorization ヘッダーは "Bearer Token" の形式になっている
HttpContext.Request.Headers.TryGetValue(HEADER_NAME_AUTHORIZATION, out StringValues values);
if (values.Count == 0)
{
return(null);
}
String[] split = values[0].Split(' ', StringSplitOptions.RemoveEmptyEntries);
if (split.Length <= 1)
{
return(null);
}
String token = split[1];
// トークン検証
try
{
TokenValidationParameters parameters = ServerCommon.TokenValidationParameters();
JwtSecurityTokenHandler jwtSecurityTokenHandler = new();
ClaimsPrincipal claims = jwtSecurityTokenHandler.ValidateToken(token, parameters, out SecurityToken validatedToken);
return(claims.Claims.FirstOrDefault(x => x.Type == ClaimTypes.NameIdentifier)?.Value);
}
catch (Exception)
{
// トークンの有効期限切れ等の場合は例外となる
return(null);
}
}
// This method gets called by the runtime. Use this method to add services to the container.
// For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
public void ConfigureServices(IServiceCollection services)
{
services.AddControllersWithViews();
services.AddRazorPages();
// 秘密鍵準備
ServerCommon.PrepareTokenSecretKey();
services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme).AddJwtBearer(options =>
{
// 秘密鍵準備後
options.TokenValidationParameters = ServerCommon.TokenValidationParameters();
});
// Server-Sent Events
services.AddServerSentEvents();
}