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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
*
* Example:
* @code
* <#example#>
* @endcode
*/
/*
* {
* "CPI_ACK" : {
* "SEQUENCE" : <sequence number>,
* "RETURN" : "ACK" or "NACK",
* "REQUEST" : <original request JSON>
* [, "MESSAGE" : <optional message> ]
* }
* ["AUTHENTICATOR" : <TBD proof based on request/response, e.g. a crypto signature>]
* }
*/
#include <config.h>
#include <stdio.h>
#include <strings.h>
#include <LongBow/runtime.h>
#include "controlPlaneInterface.h"
#include "cpi_private.h"
#include "cpi_Acks.h"
struct control_plane_ack {
ControlPlaneInformation cpi_ack;
CpiAckType ack_type;
ControlPlaneInformation cpi_original;
};
static const char *cpiReturn = "RETURN";
static const char *cpiReturnAck = "ACK";
static const char *cpiReturnNack = "NACK";
static const char *cpiOriginal = "REQUEST";
static const char *cpiRequest = "CPI_REQUEST";
PARCJSON *
cpiAcks_CreateAck(const PARCJSON *originalRequest)
{
uint64_t seqnum = cpi_GetNextSequenceNumber();
PARCJSON *body = parcJSON_Create();
parcJSON_AddInteger(body, cpiSeqnum, (int) seqnum);
parcJSON_AddString(body, cpiReturn, cpiReturnAck);
PARCJSON *copy = parcJSON_Copy(originalRequest);
parcJSON_AddObject(body, cpiOriginal, copy);
parcJSON_Release(©);
PARCJSON *json = parcJSON_Create();
parcJSON_AddObject(json, cpiAck, body);
parcJSON_Release(&body);
return json;
}
PARCJSON *
cpiAcks_CreateNack(const PARCJSON *request)
{
uint64_t seqnum = cpi_GetNextSequenceNumber();
PARCJSON *body = parcJSON_Create();
parcJSON_AddInteger(body, cpiSeqnum, (int) seqnum);
parcJSON_AddString(body, cpiReturn, cpiReturnNack);
PARCJSON *copy = parcJSON_Copy(request);
parcJSON_AddObject(body, cpiOriginal, copy);
parcJSON_Release(©);
PARCJSON *json = parcJSON_Create();
parcJSON_AddObject(json, cpiAck, body);
parcJSON_Release(&body);
return json;
}
bool
cpiAcks_IsAck(const PARCJSON *json)
{
PARCJSONValue *ack_value = parcJSON_GetValueByName(json, cpiAck);
if (ack_value != NULL) {
PARCJSON *ack_json = parcJSONValue_GetJSON(ack_value);
PARCJSONValue *return_value = parcJSON_GetValueByName(ack_json, cpiReturn);
PARCBuffer *sBuf = parcJSONValue_GetString(return_value);
const char *returnStr = parcBuffer_Overlay(sBuf, 0);
return strcasecmp(returnStr, cpiReturnAck) == 0;
}
return false;
}
uint64_t
cpiAcks_GetAckOriginalSequenceNumber(const PARCJSON *json)
{
PARCJSONValue *value = parcJSON_GetValueByName(json, cpiAck);
assertNotNull(value, "got null ack json: %s", parcJSON_ToString(json));
PARCJSON *tempJson = parcJSONValue_GetJSON(value);
value = parcJSON_GetValueByName(tempJson, cpiOriginal);
assertNotNull(value, "got null original json from the ack: %s", parcJSON_ToString(tempJson));
tempJson = parcJSONValue_GetJSON(value);
value = parcJSON_GetValueByName(tempJson, cpiRequest);
assertNotNull(value, "got null request json from the ack: %s", parcJSON_ToString(tempJson));
tempJson = parcJSONValue_GetJSON(value);
value = parcJSON_GetValueByName(tempJson, cpiSeqnum);
assertNotNull(value, "got null seqnum inside the request: %s", parcJSON_ToString(tempJson));
return parcJSONValue_GetInteger(value);
}
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