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dev-payload.cpp
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dev-payload.cpp
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/**
* @brief Simulate sending payload to the network server from the end device
* @file dev-payload.cpp
* Copyright (c) 2022 [email protected] Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy of Siberian Branch of the Russian Academy of Sciences
* MIT license
*/
#include <iostream>
#include <sstream>
#include <fstream>
#include <cstring>
#include <csignal>
#include <cerrno>
#include "argtable3/argtable3.h"
#include "utilstring.h"
#include "errlist.h"
#include "utillora.h"
#include "udp-socket.h"
#include "identity-service-file-json.h"
#include "config-filename.h"
#define DEF_NS_PORT 5000
#define MAX_RECV_BUFFER_SIZE 4096
const std::string programName = "dev-payload";
const std::string PROG_NAME_DEV_PAYLOAD = "Simulate sending a packet from the end device";
#define DEF_IDENTITY_STORAGE_NAME "identity.json"
#ifdef _MSC_VER
#define RECV_TYPE char*
#else
#define RECV_TYPE void*
#endif
static void done()
{
// destroy and free all
}
static void stop()
{
}
void signalHandler(int signal)
{
switch (signal)
{
case SIGINT:
std::cerr << MSG_INTERRUPTED << std::endl;
stop();
done();
break;
default:
break;
}
}
#ifdef _MSC_VER
// TODO
void setSignalHandler()
{
}
#else
void setSignalHandler()
{
struct sigaction action;
memset(&action, 0, sizeof(struct sigaction));
action.sa_handler = &signalHandler;
sigaction(SIGINT, &action, NULL);
sigaction(SIGHUP, &action, NULL);
}
#endif
/**
* Parse command line
* Return 0- success
* 1- show help and exit, or command syntax error
* 2- output file does not exists or can not open to write
**/
int parseCmd
(
std::string &identityFileName,
std::string &gatewayFileName,
std::string &eui,
std::string &deviceName,
uint64_t &gwIdentifier,
std::vector<std::string> &payload,
uint32_t &fCnt,
std::string &network_server_address,
bool &jsonOnly,
int &verbosity,
int argc,
char *argv[])
{
// device path
struct arg_str *a_identity_fn = arg_str0("i", "identity", "<file>", "identity JSON file. Default ./" DEF_IDENTITY_STORAGE_NAME);
struct arg_str *a_eui = arg_str0("e", "eui", "<id>", "end-device identifier");
struct arg_str *a_device_name = arg_str0("E", "name", "<name>", "end-device name.");
struct arg_str *a_gw_id = arg_str0("g", "gw-id", "<id>", "gateway identifier");
struct arg_str *a_payload_hex = arg_strn(nullptr, nullptr, "<hex>", 1, 100, "payload bytes, in hex");
struct arg_int *a_fcnt = arg_int0("c", "fcnt", "<number>", "FCnt value, default 0");
struct arg_str *a_network_server_address = arg_str0("a", "address", "<IP:port>", "Send packet to network server. Default port 5000");
struct arg_lit *a_json_only = arg_lit0("j", "json-only", "Suppress header (JSON only)");
struct arg_lit *a_verbosity = arg_litn("v", "verbose", 0, 3, "Set verbosity level");
struct arg_lit *a_help = arg_lit0("?", "help", "Show this help");
struct arg_end *a_end = arg_end(20);
void *argtable[] = {
a_identity_fn, a_eui, a_device_name, a_gw_id, a_payload_hex, a_fcnt,
a_network_server_address, a_json_only,
a_verbosity, a_help, a_end
};
int nerrors;
// verify the argtable[] entries were allocated successfully
if (arg_nullcheck(argtable) != 0)
{
arg_freetable(argtable, sizeof(argtable) / sizeof(argtable[0]));
return 1;
}
// Parse the command line as defined by argtable[]
nerrors = arg_parse(argc, argv, argtable);
if (!nerrors) {
if (a_identity_fn->count)
identityFileName = getDefaultConfigFileName(argv[0], *a_identity_fn->sval);
else
identityFileName = getDefaultConfigFileName(argv[0], DEF_IDENTITY_STORAGE_NAME);
if (a_eui->count) {
eui = *a_eui->sval;
}
if (a_device_name->count) {
deviceName = *a_device_name->sval;
}
if (a_gw_id->count) {
gwIdentifier = str2gatewayId(*a_gw_id->sval);
}
for (int i = 0; i < a_payload_hex->count; i++) {
payload.push_back(hex2string(*a_payload_hex->sval));
}
if (a_network_server_address->count) {
network_server_address = std::string(*a_network_server_address->sval);
}
if (a_fcnt->count)
fCnt = *a_fcnt->ival;
else
fCnt = 0;
jsonOnly = a_json_only->count > 0;
verbosity = a_verbosity->count;
}
// special case: '--help' takes precedence over error reporting
if ((a_help->count) || nerrors) {
if (nerrors)
arg_print_errors(stderr, a_end, programName.c_str());
std::cerr << "Usage: " << programName << std::endl;
arg_print_syntax(stderr, argtable, "\n");
std::cerr << PROG_NAME_DEV_PAYLOAD << std::endl;
arg_print_glossary(stderr, argtable, " %-25s %s\n");
arg_freetable(argtable, sizeof(argtable) / sizeof(argtable[0]));
return ERR_CODE_COMMAND_LINE;
}
arg_freetable(argtable, sizeof(argtable) / sizeof(argtable[0]));
return 0;
}
void onLog(
int level,
int modulecode,
int errorcode,
const std::string &message
)
{
std::cerr << message << std::endl;
}
/**
* Wait for ACK response from network server
* @param socket socket to listen
* @param token
* @param timeoutSec wait timeout in seconds, default 1 second
* @return 0- success, <0- error code
*/
static int recvACK
(
UDPSocket &socket,
uint64_t token,
const int timeoutSec = 1
)
{
fd_set readHandles;
FD_ZERO(&readHandles);
FD_SET(socket.sock, &readHandles);
struct timeval timeoutInterval;
timeoutInterval.tv_sec = timeoutSec;
timeoutInterval.tv_usec = 0;
int rs = select(socket.sock + 1, &readHandles, NULL, NULL, &timeoutInterval);
// error or timeout
if (rs <= 0)
return rs;
std::string recvBuffer;
recvBuffer.resize(MAX_RECV_BUFFER_SIZE + 1);
struct sockaddr_in6 cliAddr;
socklen_t cliAddrLen = sizeof(cliAddr);
int rr = (int) recvfrom(socket.sock, (RECV_TYPE) recvBuffer.c_str(), MAX_RECV_BUFFER_SIZE, 0, (struct sockaddr*) &cliAddr, &cliAddrLen);
if (rr < 0) {
std::cerr << ERR_SOCKET_READ
<< " " << UDPSocket::addrString(&socket.addrStorage)
<< " errno " << errno << ": " << strerror(errno)
<< std::endl;
return ERR_CODE_SOCKET_READ;
}
if (rr != sizeof(SEMTECH_ACK)) {
std::cerr << ERR_INVALID_PACKET
<< " " << UDPSocket::addrString(&socket.addrStorage)
<< " wrong size " << rr
<< std::endl;
return ERR_CODE_INVALID_PACKET;
}
SEMTECH_ACK *ack = (SEMTECH_ACK *) recvBuffer.c_str(); // 4 bytes
if (ack->version != 2) {
std::cerr << ERR_INVALID_PACKET
<< " " << UDPSocket::addrString(&socket.addrStorage)
<< " wrong version " << (int) ack->version
<< std::endl;
return ERR_CODE_INVALID_PACKET;
}
if (!(ack->tag == 1 || ack->tag == 4)) {
std::cerr << ERR_INVALID_PACKET
<< " " << UDPSocket::addrString(&socket.addrStorage)
<< " wrong tag " << (int) ack->tag
<< std::endl;
return ERR_CODE_INVALID_PACKET;
}
if (!(ack->tag == 1 || ack->tag == 4)) {
std::cerr << ERR_INVALID_PACKET
<< " " << UDPSocket::addrString(&socket.addrStorage)
<< " wrong tag " << (int) ack->tag
<< std::endl;
return ERR_CODE_INVALID_PACKET;
}
if (ack->token != token) {
std::cerr << ERR_INVALID_PACKET
<< " " << UDPSocket::addrString(&socket.addrStorage)
<< " wrong token " << (int) ack->tag
<< std::endl;
return ERR_CODE_INVALID_PACKET;
}
return LORA_OK;
}
static int sendPacket(
std::string &semtechPacket,
UDPSocket &socket,
int verbosity
)
{
int operationResult = 0;
size_t r = sendto(socket.sock, semtechPacket.c_str(), semtechPacket.size(), 0,
&socket.addrStorage,
((socket.addrStorage.sa_family == AF_INET6) ? sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in)));
if (r != semtechPacket.size()) {
operationResult = ERR_CODE_SOCKET_WRITE;
} else
if (verbosity > 0)
std::cerr << MSG_SEND_TO
<< UDPSocket::addrString(&socket.addrStorage)
<< " " << r << " bytes, "
<< ", hex: " << hexString(semtechPacket)
<< std::endl;
return operationResult;
}
static int printOrSendPayload(
uint64_t gwIdentifier,
NetworkIdentity &deviceNetId,
const std::string &payload,
uint32_t fCnt,
std::string &network_server_address,
bool jsonOnly,
int verbosity
)
{
SemtechUDPPacket packet;
int power = 14;
std::string semtechPacket = packet.mkPushDataPacket(MTYPE_UNCONFIRMED_DATA_UP, payload,
deviceNetId, time(NULL), fCnt, gwIdentifier, power);
if (verbosity > 0) {
std::cerr
<< "Payload: " << hexString(payload) << std::endl
<< "address: " << DEVADDR2string(packet.header.header.devaddr) << std::endl
<< "nwkSKey: " << KEY2string(deviceNetId.nwkSKey) << std::endl
<< "appSKey: " << KEY2string(deviceNetId.appSKey) << std::endl
<< "gateway: " << DEVEUI2string(packet.prefix.mac) << std::endl;
}
if (network_server_address.empty()) {
// just print packet
if (jsonOnly) // remove semtech prefix
semtechPacket = semtechPacket.substr(sizeof(SEMTECH_PREFIX_GW));
std::cout << semtechPacket << std::endl;
done();
exit(0);
}
// send to the IP address
if (network_server_address.find(":") == std::string::npos) {
// add default port value if missed
std::stringstream ss;
ss << network_server_address << ":" << DEF_NS_PORT;
network_server_address = ss.str();
}
UDPSocket socket(network_server_address, MODE_OPEN_SOCKET_CONNECT, MODE_FAMILY_HINT_UNSPEC);
if (socket.errcode) {
std::cerr << ERR_MESSAGE << socket.errcode << ": " << strerror_lorawan_ns(socket.errcode) << std::endl;
done();
exit(ERR_CODE_SOCKET_CREATE);
}
int operationResult = sendPacket(semtechPacket, socket, verbosity);
if (operationResult)
std::cerr << ERR_SOCKET_WRITE
<< " " << UDPSocket::addrString(&socket.addrStorage)
<< " sendto() return " << operationResult
<< " errno " << errno << ": " << strerror(errno)
<< std::endl;
// read ACK response for just sent token
operationResult = recvACK(socket, packet.prefix.token, 1);
if (operationResult == 0 && verbosity > 0) {
std::cerr << "Received ACK successfully" << std::endl;
}
socket.closeSocket();
return 0;
}
int main(
int argc,
char *argv[])
{
std::vector<TDEVEUI> devEUIs;
std::string identityFileName;
std::string gatewayFileName;
std::string eui;
std::string deviceName;
uint64_t gwIdentifier;
std::vector<std::string> payload;
std::string network_server_address;
bool jsonOnly;
int verbosity;
#ifdef _MSC_VER
#else
setSignalHandler();
#endif
uint32_t fCnt;
if (parseCmd(identityFileName, gatewayFileName, eui, deviceName, gwIdentifier,
payload, fCnt, network_server_address,
jsonOnly, verbosity, argc, argv) != 0) {
exit(ERR_CODE_COMMAND_LINE);
}
JsonFileIdentityService identityService;
// load device list
if (identityService.init(identityFileName, NULL) != 0) {
std::cerr << ERR_MESSAGE << identityService.errMessage << std::endl;
exit(ERR_CODE_NO_CONFIG);
}
if (verbosity > 2) {
std::vector<NetworkIdentity> identities;
std::cerr << MSG_DEVICES << std::endl;
identityService.list(identities, 0, 0);
for (std::vector<NetworkIdentity>::const_iterator it(identities.begin()); it != identities.end(); it++) {
std::cerr << "\t" << DEVADDR2string(it->devaddr)
<< "\t" << DEVEUI2string(it->devEUI)
<< "\t" << DEVICENAME2string(it->name);
if (identityService.canControlService(it->devaddr))
std::cerr << "\tmaster";
std::cerr << std::endl;
}
}
// try to find out EUI
if (!eui.empty()) {
std::vector <std::string> euis;
euis.push_back(eui);
if (identityService.parseIdentifiers(devEUIs, euis, false)) {
std::cerr << ERR_MESSAGE << ERR_CODE_INVALID_DEVICE_EUI << ": " << ERR_INVALID_DEVICE_EUI << " " << eui << std::endl;
exit(ERR_CODE_INVALID_DEVICE_EUI);
}
}
// .. or by name
if (!deviceName.empty()) {
std::vector <std::string> deviceNames;
deviceNames.push_back(deviceName);
if (identityService.parseNames(devEUIs, deviceNames, false)) {
std::cerr << ERR_MESSAGE << ERR_CODE_DEVICE_NAME_NOT_FOUND << ": "
<< ERR_DEVICE_NAME_NOT_FOUND << " (name: " << deviceName << ")" << std::endl;
exit(ERR_CODE_DEVICE_NAME_NOT_FOUND);
}
}
if (devEUIs.empty()) {
std::cerr << ERR_MESSAGE << ERR_CODE_DEVICE_NAME_NOT_FOUND << ": "
<< ERR_DEVICE_NAME_NOT_FOUND << " (name: " << deviceName << ")" << std::endl;
exit(ERR_CODE_DEVICE_NAME_NOT_FOUND);
}
// device identity
NetworkIdentity deviceNetId;
if (identityService.getNetworkIdentity(deviceNetId, devEUIs[0].eui) != 0) {
std::cerr << ERR_MESSAGE << ERR_CODE_INVALID_DEVICE_EUI << ": " << ERR_INVALID_DEVICE_EUI << std::endl;
exit(ERR_CODE_INVALID_DEVICE_EUI);
}
// compose packet
int r = 0;
for (std::vector<std::string>::const_iterator it(payload.begin()); it != payload.end(); it++) {
r = printOrSendPayload(
gwIdentifier,
deviceNetId,
*it,
fCnt,
network_server_address,
jsonOnly,
verbosity
);
fCnt++;
if (r)
break;
}
return r;
}