async_js_callback_handler.cpp
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#include "stdafx.h"
#include "etradeclient/browser/async_js_callback_handler.h"
#include <string>
#include <boost/property_tree/ptree.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/ptr_container/ptr_map.hpp>
#include "etradeclient/boost_patch/property_tree/json_parser.hpp" // WARNIING! Make sure to include our patched version.
#include "etradeclient/hardware/hardware_cmd.h"
#include "etradeclient/utility/url_regex.h"
#include "etradeclient/utility/url_config.h"
#include "etradeclient/utility/logging.h"
#include "etradeclient/utility/string_converter.h"
namespace HW
{
namespace PT = boost::property_tree;
// Tag & value of the hardware function request & response string in JSON format.
static const std::string JSON_TAG_CMD = "command";
static const std::string JSON_TAG_FILEID = "fileId";
static const std::string JSON_TAG_DATA = "data";
static const std::string JSON_TAG_SEQ = "seq";
static const std::string JSON_TAG_ANS = "answer";
static const std::string JSON_TAG_ERROR_CODE = "errorCode";
static const std::string JSON_VAL_CMD_ACTIVATE = "activate";
static const std::string JSON_VAL_CMD_RESET = "reset";
static const std::string JSON_VAL_CMD_READ = "read";
static const std::string JSON_VAL_CMD_WRITE = "write";
static const std::string JSON_VAL_ANS_ACTIVATE_ACK = "activate_ack";
static const std::string JSON_VAL_ANS_ACTIVATE_FAILED = "activate_failed";
static const std::string JSON_VAL_ANS_RESET_ACK = "reset_ack";
static const std::string JSON_VAL_ANS_RESET_FAILED = "reset_failed";
static const std::string JSON_VAL_ANS_READ_ACK = "read_ack";
static const std::string JSON_VAL_ANS_READ_FAILED = "read_failed";
static const std::string JSON_VAL_ANS_WRITE_ACK = "write_ack";
static const std::string JSON_VAL_ANS_WRITE_FAILED = "write_failed";
static const std::string JSON_VAL_FILEID_DILI_CARD = "00";
static const std::string JSON_VAL_FILEID_DILI_CARD_BASIC_INFO = "01";
static const std::string JSON_VAL_FILEID_DILI_CARD_SERVICE_INFO = "02"; // Service info.
static const std::string JSON_VAL_FILEID_ID_CARD = "10";
static const std::string JSON_VAL_FILEID_PIN_PAD = "11";
static const std::string JSON_VAL_FILEID_BANK_CARD_NUM = "20";
struct HWRequest
{
std::string cmd;
std::string file_id;
std::string data;
std::string seq; // The sequence number of the request.
};
HWRequest ParseRequest(const std::string& request_json)
{
PT::ptree ptree;
std::stringstream ss;
ss << request_json;
PT::read_json(ss, ptree);
std::string cmd = ptree.get<std::string>(JSON_TAG_CMD);
std::string file_id = ptree.get<std::string>(JSON_TAG_FILEID);
std::string data = ptree.get<std::string>(JSON_TAG_DATA);
std::string seq = ptree.get<std::string>(JSON_TAG_SEQ);
return { cmd, file_id, data, seq };
}
std::string MakeResultJSON(const std::string& answer,
const std::string& file_id,
const std::string& error_code,
const std::string& seq,
const PT::ptree& data)
{
PT::ptree root;
root.put(JSON_TAG_ANS, answer);
root.put(JSON_TAG_FILEID, file_id);
root.put_child(JSON_TAG_DATA, data);
root.put(JSON_TAG_ERROR_CODE, error_code);
root.put(JSON_TAG_SEQ, seq);
std::stringstream ss;
PT::write_json(ss, root, false);
return ss.str();
}
class HWRequestHandler
{
typedef boost::ptr_map<std::string, HardwareCmd> HardwareCmdMap; // Key: cmd+file_id.
public:
HWRequestHandler()
{
m_hw_cmd_map.insert(JSON_VAL_CMD_READ + JSON_VAL_FILEID_ID_CARD, new ReadIDCardCmd());
m_hw_cmd_map.insert(JSON_VAL_CMD_READ + JSON_VAL_FILEID_PIN_PAD, new ReadPINPadCmd());
m_hw_cmd_map.insert(JSON_VAL_CMD_ACTIVATE + JSON_VAL_FILEID_DILI_CARD, new ActivateDILICardCmd());
m_hw_cmd_map.insert(JSON_VAL_CMD_RESET + JSON_VAL_FILEID_DILI_CARD, new ResetDILICardCmd());
m_hw_cmd_map.insert(JSON_VAL_CMD_READ + JSON_VAL_FILEID_DILI_CARD_BASIC_INFO, new ReadDILICardBasicInfoCmd());
m_hw_cmd_map.insert(JSON_VAL_CMD_READ + JSON_VAL_FILEID_DILI_CARD_SERVICE_INFO, new ReadDILICardServiceInfoCmd());
m_hw_cmd_map.insert(JSON_VAL_CMD_WRITE + JSON_VAL_FILEID_DILI_CARD_SERVICE_INFO, new WriteDILICardServiceInfoCmd());
m_hw_cmd_map.insert(JSON_VAL_CMD_READ + JSON_VAL_FILEID_BANK_CARD_NUM, new ReadBankCardNumCmd());
}
std::string HandleRequest(const std::string& request_json)
{
try
{
static const std::string OK = ""; // TODO maybe improve this use the same variable defined by "HardwareCmd".
HWRequest hw_req = ParseRequest(request_json);
LOG_TRACE(L"执行硬件调用请求:" + str_2_wstr("[" + hw_req.cmd + "," +hw_req.file_id + "," + hw_req.seq + "]"));
HardwareCmd::Reply reply = m_hw_cmd_map.at(hw_req.cmd + hw_req.file_id).Execute(hw_req.data);
std::string answer = "";
if (boost::iequals(OK, reply.error_code)) // Succeed.
answer = hw_req.cmd + "_ack";
else
answer = hw_req.cmd + "_failed";
std::string reply_json = MakeResultJSON(answer, hw_req.file_id, reply.error_code, hw_req.seq, reply.data);
LOG_TRACE(L"执行硬件调用结果:" + str_2_wstr("[" + hw_req.cmd + "," + hw_req.file_id + "," + hw_req.seq + "] [" + reply.error_code + "]") + +L"\n");
return reply_json;
}
catch (std::exception& ex)
{
LOG_FATAL(L"执行硬件调用请求发生异常，异常信息： " + str_2_wstr(ex.what()) + L"\n");
return "";
}
}
private:
HardwareCmdMap m_hw_cmd_map;
};
/*Callback handler for call the hardware function.*/
class Handler : public CefMessageRouterBrowserSide::Handler
{
public:
// This handler function will be called due to 'window.cefQuery' call in web page's JavaScript.
virtual bool OnQuery(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
int64 query_id,
const CefString& request_json,
bool persistent,
CefRefPtr<Callback> callback) OVERRIDE
{
// Only handle the message from our own host. This is an important security check!
CefString url_ = frame->GetURL();
if (!CheckHost(url_.ToString()))
return false;
callback->Success(m_hw_req_handler.HandleRequest(request_json));
return true;
}
private:
bool CheckHost(const std::string& url_)
{
std::smatch match_res;
if (!URLRegex::Parse(url_, match_res))
return false;
return 0 == URLConfig::Instance().Host().compare(match_res[3].str());
}
private:
HWRequestHandler m_hw_req_handler;
};
} // HW
namespace AsyncJSCallbackHandler
{
// Handler creation. Called from MainViewBrowserHandler.
void Create(MainViewBrowserHandler::MessageHandlerSet& handlers)
{
//TODO: need exception handling here? return true/false indicator?
handlers.emplace(new HW::Handler());
}
} // AsyncJSCallbackHandler