public DecryptMiddleware(RequestDelegate next, IConfiguration configuration)
{
this.next = next;
using TextReader reader = new StringReader(configuration.GetPivateKey());
PemObject pemObject = new PemReader(reader).ReadPemObject();
AsymmetricKeyParameter pkey = PrivateKeyFactory.CreateKey(pemObject.Content);
this.pkcs1Encoding = new Pkcs1Encoding(new RsaEngine());
pkcs1Encoding.Init(false, pkey);
var assembly = Assembly.GetExecutingAssembly();
Type[] types = assembly.GetTypes();
Type[] apicontrollers = types.Where(type => type.GetCustomAttribute <ApiControllerAttribute>() != null).ToArray();
foreach (Type ctrl in apicontrollers)
{
MethodInfo[] controllerMethods = ctrl.GetMethods();
RouteAttribute apiRoute = ctrl.GetCustomAttribute <RouteAttribute>();
if (apiRoute == null)
{
throw new Exception($"{ctrl.Name} doesn't have a \"Route\" Attribute");
}
string ctrRoute = apiRoute.Template;
foreach (MethodInfo meth in controllerMethods)
{
EncryptAttribute encryptAttribute = meth.GetCustomAttribute <EncryptAttribute>();
if (encryptAttribute != null)
{
string route;
HttpPostAttribute post = meth.GetCustomAttribute <HttpPostAttribute>();
if (post != null)
{
route = post.Template;
}
else
{
throw new Exception("Api Mehtod Be Encrypted Http Method Must Be POST ");
}
string key = "/" + ctrRoute + "/" + route;
if (this.ApiMap.ContainsKey(key))
{
throw new Exception("Api Method Route Repeat Exception！");
}
this.ApiMap.Add(key, encryptAttribute);
}
}
}
}
static string WriteProperty(EncryptAttribute encryptAttrib, object value)
{
var builder = new StringBuilder();
if (value.ToString() != value.GetType().ToString())
{
builder.AppendQuoted(value.ToString());
}
WriteProperties(value,
(key, val) => builder.Append(builder.Length > 0 ? "; " : String.Empty)
.AppendQuoted(key)
.Append("=")
.Append(val));
return(encryptAttrib != null
? new StringBuilder().AppendQuoted(
Convert.ToBase64String(ProtectedData.Protect(Encoding.UTF8.GetBytes(builder.ToString()), null, DataProtectionScope.CurrentUser)))
.ToString()
: builder.ToString());
}
private static void AddAttributes(ResultBox box, ValueHandler valueHandler, OptionAttribute optionAttribute, EncryptAttribute encryptAttribute)
{
object defaultValue = null;
if (optionAttribute != null)
{
if (optionAttribute.Alias != null)
{
box.StoreByName = optionAttribute.Alias;
}
//validate that types for default value match
Type dvt = optionAttribute.DefaultValue?.GetType();
if (optionAttribute.DefaultValue != null)
{
if (dvt != box.ResultType && dvt != typeof(string))
{
throw new InvalidCastException($"Default value for option {box.Name} is of type {dvt.FullName} whereas the property has type {box.Name}. To fix this, either set default value to type {box.ResultType.FullName} or a string parseable to the target type.");
}
if (box.ResultType != typeof(string) && dvt == typeof(string))
{
valueHandler.TryParse(box.ResultType, (string)optionAttribute.DefaultValue, out defaultValue);
}
}
if (defaultValue == null)
{
defaultValue = optionAttribute.DefaultValue;
}
}
if (defaultValue == null)
{
defaultValue = GetDefaultValue(box.ResultType);
}
box.DefaultResult = defaultValue;
if (encryptAttribute != null)
{
box.ShouldEncrypt = true;
}
}
