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/*
* Copyright (C) 2011-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#include "HTTPJsonRpcHandler.h"
#include "ServiceBroker.h"
#include "URL.h"
#include "interfaces/json-rpc/JSONRPC.h"
#include "interfaces/json-rpc/JSONServiceDescription.h"
#include "network/httprequesthandler/HTTPRequestHandlerUtils.h"
#include "utils/FileUtils.h"
#include "utils/JSONVariantWriter.h"
#include "utils/Variant.h"
#include "utils/log.h"
#define MAX_HTTP_POST_SIZE 65536
bool CHTTPJsonRpcHandler::CanHandleRequest(const HTTPRequest &request) const
{
return (request.pathUrl.compare("/jsonrpc") == 0);
}
MHD_RESULT CHTTPJsonRpcHandler::HandleRequest()
{
CHTTPClient client(m_request.method);
bool isRequest = false;
std::string jsonpCallback;
// get all query arguments
std::map<std::string, std::string> arguments;
HTTPRequestHandlerUtils::GetRequestHeaderValues(m_request.connection, MHD_GET_ARGUMENT_KIND, arguments);
if (m_request.method == POST)
{
std::string contentType = HTTPRequestHandlerUtils::GetRequestHeaderValue(m_request.connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_CONTENT_TYPE);
// If the content-type of the m_request was specified, it must be application/json-rpc, application/json, or application/jsonrequest
// http://www.jsonrpc.org/historical/json-rpc-over-http.html
if (!contentType.empty() && contentType.compare("application/json-rpc") != 0 &&
contentType.compare("application/json") != 0 && contentType.compare("application/jsonrequest") != 0)
{
m_response.type = HTTPError;
m_response.status = MHD_HTTP_UNSUPPORTED_MEDIA_TYPE;
return MHD_YES;
}
isRequest = true;
}
else if (m_request.method == GET || m_request.method == HEAD)
{
std::map<std::string, std::string>::const_iterator argument = arguments.find("request");
if (argument != arguments.end() && !argument->second.empty())
{
m_requestData = argument->second;
isRequest = true;
}
}
std::map<std::string, std::string>::const_iterator argument = arguments.find("jsonp");
if (argument != arguments.end() && !argument->second.empty())
jsonpCallback = argument->second;
else
{
argument = arguments.find("callback");
if (argument != arguments.end() && !argument->second.empty())
jsonpCallback = argument->second;
}
if (isRequest)
{
m_responseData = JSONRPC::CJSONRPC::MethodCall(m_requestData, &m_transportLayer, &client);
if (!jsonpCallback.empty())
m_responseData = jsonpCallback + "(" + m_responseData + ");";
}
else if (jsonpCallback.empty())
{
// get the whole output of JSONRPC.Introspect
CVariant result;
JSONRPC::CJSONServiceDescription::Print(result, &m_transportLayer, &client);
if (!CJSONVariantWriter::Write(result, m_responseData, false))
{
m_response.type = HTTPError;
m_response.status = MHD_HTTP_INTERNAL_SERVER_ERROR;
return MHD_YES;
}
}
else
{
m_response.type = HTTPError;
m_response.status = MHD_HTTP_BAD_REQUEST;
return MHD_YES;
}
m_requestData.clear();
m_responseRange.SetData(m_responseData.c_str(), m_responseData.size());
m_response.type = HTTPMemoryDownloadNoFreeCopy;
m_response.status = MHD_HTTP_OK;
m_response.contentType = "application/json";
m_response.totalLength = m_responseData.size();
return MHD_YES;
}
HttpResponseRanges CHTTPJsonRpcHandler::GetResponseData() const
{
HttpResponseRanges ranges;
ranges.push_back(m_responseRange);
return ranges;
}
bool CHTTPJsonRpcHandler::appendPostData(const char *data, size_t size)
{
if (m_requestData.size() + size > MAX_HTTP_POST_SIZE)
{
CServiceBroker::GetLogging()
.GetLogger("CHTTPJsonRpcHandler")
->error("Stopped uploading POST data since it exceeded size limitations ({})",
MAX_HTTP_POST_SIZE);
return false;
}
m_requestData.append(data, size);
return true;
}
bool CHTTPJsonRpcHandler::CHTTPTransportLayer::PrepareDownload(const char *path, CVariant &details, std::string &protocol)
{
if (!CFileUtils::Exists(path))
return false;
protocol = "http";
std::string url;
std::string strPath = path;
if (StringUtils::StartsWith(strPath, "image://") ||
(StringUtils::StartsWith(strPath, "special://") && StringUtils::EndsWith(strPath, ".tbn")))
url = "image/";
else
url = "vfs/";
url += CURL::Encode(strPath);
details["path"] = url;
return true;
}
bool CHTTPJsonRpcHandler::CHTTPTransportLayer::Download(const char *path, CVariant &result)
{
return false;
}
int CHTTPJsonRpcHandler::CHTTPTransportLayer::GetCapabilities()
{
return JSONRPC::Response | JSONRPC::FileDownloadRedirect;
}
CHTTPJsonRpcHandler::CHTTPClient::CHTTPClient(HTTPMethod method)
: m_permissionFlags(JSONRPC::ReadData)
{
// with a HTTP POST request everything is allowed
if (method == POST)
m_permissionFlags = JSONRPC::OPERATION_PERMISSION_ALL;
}
int CHTTPJsonRpcHandler::CHTTPClient::GetAnnouncementFlags()
{
// Does not support broadcast
return 0;
}
bool CHTTPJsonRpcHandler::CHTTPClient::SetAnnouncementFlags(int flags)
{
return false;
}
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