Example #1
0
        /// <summary>
        /// Registers the API Methods
        /// </summary>
        private void RegisterAPIMethods()
        {
            Type t = this.GetType();

            t.GetMethods()
            .Where(mi =>
            {
                return(mi.GetCustomAttributes(typeof(ApiAttribute), true).Any());
            })
            .ToList()
            .ForEach(mi => {
                List <ApiAttribute> tags = mi.GetCustomAttributes(typeof(ApiAttribute), true).Select(s => s as ApiAttribute).ToList();

                foreach (ApiAttribute tag in tags)
                {
                    #region Route handler
                    Func <dynamic, Response> method = (parameters) =>
                    {
                        try
                        {
                            // Authentication
                            if (tag.IsSecure())
                            {
                                var header_token = Context.Request.Headers["x-parking-token"].FirstOrDefault() ?? string.Empty;
                                var header_sign  = Context.Request.Headers["x-parking-signature"].FirstOrDefault() ?? string.Empty;

                                // Validate signature and token.
                                string tokenRaw = string.Empty;

                                if (!string.IsNullOrEmpty(header_token))
                                {
                                    try
                                    {
                                        tokenRaw = Crypto.DecryptStringAES(header_token, ConfigurationManager.AppSettings["Crypto.Secret"]);
                                    }
                                    catch (Exception e)
                                    {
                                        throw new InvalidTokenException(e);
                                    }
                                }
                                else
                                {
                                    throw new InvalidTokenException("Unable to access resource: " + tag.GetRoute());
                                }

                                Guid tokenGuid = new Guid(tokenRaw);

                                #region Validate session token.

                                APISession sess = APISession.Get(tokenGuid);
                                if (sess == null)
                                {
                                    throw new AccessException(Resources.API_ErrorSessionRequired);
                                }

                                User user = User.GetById(sess.UserId.Value);

                                if (tag.GetRoleLevel() > 0)
                                {
                                    Role role = Role.GetRolesForUser(user.Email).OrderByDescending(r => r.RoleLevel).FirstOrDefault();
                                    if (role == null)
                                    {
                                        throw new APIException(Resources.API_ErrorNoRolesAssigned);
                                    }

                                    if (role.RoleLevel < tag.GetRoleLevel())
                                    {
                                        throw new AccessException(Resources.API_ErrorSessionPrivilegesRequired);
                                    }
                                }

                                if (mi.GetParameters().Length != 3)
                                {
                                    throw new APIException(Resources.API_ErrorMethodDefinition);
                                }

                                #endregion

                                return(Envelope(mi.Invoke(this, new object[] { user, sess, parameters })));

                                //Authorization: "AWS" + " " + AWSAccessKeyID + ":" +   Base64(HMAC-SHA1(UTF-8(Date), UTF-8(AWSSecretAccessKey)))
                            }

                            return(Envelope(mi.Invoke(this, new object[] { parameters })));
                        }
                        catch (ModelValidationException me)
                        {
                            Response r = Response.AsJson(new
                            {
                                Time          = Time.ConvertToUnixTime(DateTime.Now),
                                Response      = me.Errors.ToArray(),
                                Type          = "ValidationResult",
                                Error         = true,
                                IsGlobalError = false
                            });
                            return(r);
                        }
                        catch (Exception e)
                        {
                            return(Envelope(e));
                        }
                    };

                    #endregion

                    #region Route Assignment
                    string route = tag.GetRoute();
                    switch (tag.GetMethod())
                    {
                    case ApiMethod.GET:
                        Get[route] = method;
                        break;

                    case ApiMethod.POST:
                        Post[route] = method;
                        break;

                    case ApiMethod.PUT:
                        Put[route] = method;
                        break;

                    case ApiMethod.DELETE:
                        Delete[route] = method;
                        break;

                    case ApiMethod.GETPOST:
                        Get[route]  = method;
                        Post[route] = method;
                        break;
                    }
                    #endregion
                }
            });
        }