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firmware/src/serialization/MeshPacketSerializer.cpp

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#ifndef NRF52_USE_JSON
#include "MeshPacketSerializer.h"
#include "JSON.h"
#include "NodeDB.h"
#include "mesh/generated/meshtastic/mqtt.pb.h"
#include "mesh/generated/meshtastic/telemetry.pb.h"
#include "modules/RoutingModule.h"
#include <DebugConfiguration.h>
#include <mesh-pb-constants.h>
#if defined(ARCH_ESP32)
#include "../mesh/generated/meshtastic/paxcount.pb.h"
#endif
#include "mesh/generated/meshtastic/remote_hardware.pb.h"
#include <sys/types.h>
std::string MeshPacketSerializer::JsonSerialize(const meshtastic_MeshPacket *mp, bool shouldLog)
{
// the created jsonObj is immutable after creation, so
// we need to do the heavy lifting before assembling it.
std::string msgType;
JSONObject jsonObj;
if (mp->which_payload_variant == meshtastic_MeshPacket_decoded_tag) {
JSONObject msgPayload;
switch (mp->decoded.portnum) {
case meshtastic_PortNum_TEXT_MESSAGE_APP: {
msgType = "text";
// convert bytes to string
if (shouldLog)
LOG_DEBUG("got text message of size %u", mp->decoded.payload.size);
char payloadStr[(mp->decoded.payload.size) + 1];
memcpy(payloadStr, mp->decoded.payload.bytes, mp->decoded.payload.size);
payloadStr[mp->decoded.payload.size] = 0; // null terminated string
// check if this is a JSON payload
JSONValue *json_value = JSON::Parse(payloadStr);
if (json_value != NULL) {
if (shouldLog)
LOG_INFO("text message payload is of type json");
// if it is, then we can just use the json object
jsonObj["payload"] = json_value;
} else {
// if it isn't, then we need to create a json object
// with the string as the value
if (shouldLog)
LOG_INFO("text message payload is of type plaintext");
msgPayload["text"] = new JSONValue(payloadStr);
jsonObj["payload"] = new JSONValue(msgPayload);
}
break;
}
case meshtastic_PortNum_TELEMETRY_APP: {
msgType = "telemetry";
meshtastic_Telemetry scratch;
meshtastic_Telemetry *decoded = NULL;
memset(&scratch, 0, sizeof(scratch));
if (pb_decode_from_bytes(mp->decoded.payload.bytes, mp->decoded.payload.size, &meshtastic_Telemetry_msg, &scratch)) {
decoded = &scratch;
if (decoded->which_variant == meshtastic_Telemetry_device_metrics_tag) {
msgPayload["battery_level"] = new JSONValue((unsigned int)decoded->variant.device_metrics.battery_level);
msgPayload["voltage"] = new JSONValue(decoded->variant.device_metrics.voltage);
msgPayload["channel_utilization"] = new JSONValue(decoded->variant.device_metrics.channel_utilization);
msgPayload["air_util_tx"] = new JSONValue(decoded->variant.device_metrics.air_util_tx);
msgPayload["uptime_seconds"] = new JSONValue((unsigned int)decoded->variant.device_metrics.uptime_seconds);
} else if (decoded->which_variant == meshtastic_Telemetry_environment_metrics_tag) {
msgPayload["temperature"] = new JSONValue(decoded->variant.environment_metrics.temperature);
msgPayload["relative_humidity"] = new JSONValue(decoded->variant.environment_metrics.relative_humidity);
msgPayload["barometric_pressure"] = new JSONValue(decoded->variant.environment_metrics.barometric_pressure);
msgPayload["gas_resistance"] = new JSONValue(decoded->variant.environment_metrics.gas_resistance);
msgPayload["voltage"] = new JSONValue(decoded->variant.environment_metrics.voltage);
msgPayload["current"] = new JSONValue(decoded->variant.environment_metrics.current);
msgPayload["lux"] = new JSONValue(decoded->variant.environment_metrics.lux);
msgPayload["white_lux"] = new JSONValue(decoded->variant.environment_metrics.white_lux);
msgPayload["iaq"] = new JSONValue((uint)decoded->variant.environment_metrics.iaq);
msgPayload["wind_speed"] = new JSONValue(decoded->variant.environment_metrics.wind_speed);
msgPayload["wind_direction"] = new JSONValue((uint)decoded->variant.environment_metrics.wind_direction);
msgPayload["wind_gust"] = new JSONValue(decoded->variant.environment_metrics.wind_gust);
msgPayload["wind_lull"] = new JSONValue(decoded->variant.environment_metrics.wind_lull);
msgPayload["radiation"] = new JSONValue(decoded->variant.environment_metrics.radiation);
} else if (decoded->which_variant == meshtastic_Telemetry_air_quality_metrics_tag) {
msgPayload["pm10"] = new JSONValue((unsigned int)decoded->variant.air_quality_metrics.pm10_standard);
msgPayload["pm25"] = new JSONValue((unsigned int)decoded->variant.air_quality_metrics.pm25_standard);
msgPayload["pm100"] = new JSONValue((unsigned int)decoded->variant.air_quality_metrics.pm100_standard);
msgPayload["pm10_e"] = new JSONValue((unsigned int)decoded->variant.air_quality_metrics.pm10_environmental);
msgPayload["pm25_e"] = new JSONValue((unsigned int)decoded->variant.air_quality_metrics.pm25_environmental);
msgPayload["pm100_e"] = new JSONValue((unsigned int)decoded->variant.air_quality_metrics.pm100_environmental);
} else if (decoded->which_variant == meshtastic_Telemetry_power_metrics_tag) {
msgPayload["voltage_ch1"] = new JSONValue(decoded->variant.power_metrics.ch1_voltage);
msgPayload["current_ch1"] = new JSONValue(decoded->variant.power_metrics.ch1_current);
msgPayload["voltage_ch2"] = new JSONValue(decoded->variant.power_metrics.ch2_voltage);
msgPayload["current_ch2"] = new JSONValue(decoded->variant.power_metrics.ch2_current);
msgPayload["voltage_ch3"] = new JSONValue(decoded->variant.power_metrics.ch3_voltage);
msgPayload["current_ch3"] = new JSONValue(decoded->variant.power_metrics.ch3_current);
}
jsonObj["payload"] = new JSONValue(msgPayload);
} else if (shouldLog) {
LOG_ERROR(errStr, msgType.c_str());
}
break;
}
case meshtastic_PortNum_NODEINFO_APP: {
msgType = "nodeinfo";
meshtastic_User scratch;
meshtastic_User *decoded = NULL;
memset(&scratch, 0, sizeof(scratch));
if (pb_decode_from_bytes(mp->decoded.payload.bytes, mp->decoded.payload.size, &meshtastic_User_msg, &scratch)) {
decoded = &scratch;
msgPayload["id"] = new JSONValue(decoded->id);
msgPayload["longname"] = new JSONValue(decoded->long_name);
msgPayload["shortname"] = new JSONValue(decoded->short_name);
msgPayload["hardware"] = new JSONValue(decoded->hw_model);
msgPayload["role"] = new JSONValue((int)decoded->role);
jsonObj["payload"] = new JSONValue(msgPayload);
} else if (shouldLog) {
LOG_ERROR(errStr, msgType.c_str());
}
break;
}
case meshtastic_PortNum_POSITION_APP: {
msgType = "position";
meshtastic_Position scratch;
meshtastic_Position *decoded = NULL;
memset(&scratch, 0, sizeof(scratch));
if (pb_decode_from_bytes(mp->decoded.payload.bytes, mp->decoded.payload.size, &meshtastic_Position_msg, &scratch)) {
decoded = &scratch;
if ((int)decoded->time) {
msgPayload["time"] = new JSONValue((unsigned int)decoded->time);
}
if ((int)decoded->timestamp) {
msgPayload["timestamp"] = new JSONValue((unsigned int)decoded->timestamp);
}
msgPayload["latitude_i"] = new JSONValue((int)decoded->latitude_i);
msgPayload["longitude_i"] = new JSONValue((int)decoded->longitude_i);
if ((int)decoded->altitude) {
msgPayload["altitude"] = new JSONValue((int)decoded->altitude);
}
if ((int)decoded->ground_speed) {
msgPayload["ground_speed"] = new JSONValue((unsigned int)decoded->ground_speed);
}
if (int(decoded->ground_track)) {
msgPayload["ground_track"] = new JSONValue((unsigned int)decoded->ground_track);
}
if (int(decoded->sats_in_view)) {
msgPayload["sats_in_view"] = new JSONValue((unsigned int)decoded->sats_in_view);
}
if ((int)decoded->PDOP) {
msgPayload["PDOP"] = new JSONValue((int)decoded->PDOP);
}
if ((int)decoded->HDOP) {
msgPayload["HDOP"] = new JSONValue((int)decoded->HDOP);
}
if ((int)decoded->VDOP) {
msgPayload["VDOP"] = new JSONValue((int)decoded->VDOP);
}
if ((int)decoded->precision_bits) {
msgPayload["precision_bits"] = new JSONValue((int)decoded->precision_bits);
}
jsonObj["payload"] = new JSONValue(msgPayload);
} else if (shouldLog) {
LOG_ERROR(errStr, msgType.c_str());
}
break;
}
case meshtastic_PortNum_WAYPOINT_APP: {
msgType = "waypoint";
meshtastic_Waypoint scratch;
meshtastic_Waypoint *decoded = NULL;
memset(&scratch, 0, sizeof(scratch));
if (pb_decode_from_bytes(mp->decoded.payload.bytes, mp->decoded.payload.size, &meshtastic_Waypoint_msg, &scratch)) {
decoded = &scratch;
msgPayload["id"] = new JSONValue((unsigned int)decoded->id);
msgPayload["name"] = new JSONValue(decoded->name);
msgPayload["description"] = new JSONValue(decoded->description);
msgPayload["expire"] = new JSONValue((unsigned int)decoded->expire);
msgPayload["locked_to"] = new JSONValue((unsigned int)decoded->locked_to);
msgPayload["latitude_i"] = new JSONValue((int)decoded->latitude_i);
msgPayload["longitude_i"] = new JSONValue((int)decoded->longitude_i);
jsonObj["payload"] = new JSONValue(msgPayload);
} else if (shouldLog) {
LOG_ERROR(errStr, msgType.c_str());
}
break;
}
case meshtastic_PortNum_NEIGHBORINFO_APP: {
msgType = "neighborinfo";
meshtastic_NeighborInfo scratch;
meshtastic_NeighborInfo *decoded = NULL;
memset(&scratch, 0, sizeof(scratch));
if (pb_decode_from_bytes(mp->decoded.payload.bytes, mp->decoded.payload.size, &meshtastic_NeighborInfo_msg,
&scratch)) {
decoded = &scratch;
msgPayload["node_id"] = new JSONValue((unsigned int)decoded->node_id);
msgPayload["node_broadcast_interval_secs"] = new JSONValue((unsigned int)decoded->node_broadcast_interval_secs);
msgPayload["last_sent_by_id"] = new JSONValue((unsigned int)decoded->last_sent_by_id);
msgPayload["neighbors_count"] = new JSONValue(decoded->neighbors_count);
JSONArray neighbors;
for (uint8_t i = 0; i < decoded->neighbors_count; i++) {
JSONObject neighborObj;
neighborObj["node_id"] = new JSONValue((unsigned int)decoded->neighbors[i].node_id);
neighborObj["snr"] = new JSONValue((int)decoded->neighbors[i].snr);
neighbors.push_back(new JSONValue(neighborObj));
}
msgPayload["neighbors"] = new JSONValue(neighbors);
jsonObj["payload"] = new JSONValue(msgPayload);
} else if (shouldLog) {
LOG_ERROR(errStr, msgType.c_str());
}
break;
}
case meshtastic_PortNum_TRACEROUTE_APP: {
if (mp->decoded.request_id) { // Only report the traceroute response
msgType = "traceroute";
meshtastic_RouteDiscovery scratch;
meshtastic_RouteDiscovery *decoded = NULL;
memset(&scratch, 0, sizeof(scratch));
if (pb_decode_from_bytes(mp->decoded.payload.bytes, mp->decoded.payload.size, &meshtastic_RouteDiscovery_msg,
&scratch)) {
decoded = &scratch;
JSONArray route; // Route this message took
// Lambda function for adding a long name to the route
auto addToRoute = [](JSONArray *route, NodeNum num) {
char long_name[40] = "Unknown";
meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(num);
bool name_known = node ? node->has_user : false;
if (name_known)
memcpy(long_name, node->user.long_name, sizeof(long_name));
route->push_back(new JSONValue(long_name));
};
addToRoute(&route, mp->to); // Started at the original transmitter (destination of response)
for (uint8_t i = 0; i < decoded->route_count; i++) {
addToRoute(&route, decoded->route[i]);
}
addToRoute(&route, mp->from); // Ended at the original destination (source of response)
msgPayload["route"] = new JSONValue(route);
jsonObj["payload"] = new JSONValue(msgPayload);
} else if (shouldLog) {
LOG_ERROR(errStr, msgType.c_str());
}
}
break;
}
case meshtastic_PortNum_DETECTION_SENSOR_APP: {
msgType = "detection";
char payloadStr[(mp->decoded.payload.size) + 1];
memcpy(payloadStr, mp->decoded.payload.bytes, mp->decoded.payload.size);
payloadStr[mp->decoded.payload.size] = 0; // null terminated string
msgPayload["text"] = new JSONValue(payloadStr);
jsonObj["payload"] = new JSONValue(msgPayload);
break;
}
#ifdef ARCH_ESP32
case meshtastic_PortNum_PAXCOUNTER_APP: {
msgType = "paxcounter";
meshtastic_Paxcount scratch;
meshtastic_Paxcount *decoded = NULL;
memset(&scratch, 0, sizeof(scratch));
if (pb_decode_from_bytes(mp->decoded.payload.bytes, mp->decoded.payload.size, &meshtastic_Paxcount_msg, &scratch)) {
decoded = &scratch;
msgPayload["wifi_count"] = new JSONValue((unsigned int)decoded->wifi);
msgPayload["ble_count"] = new JSONValue((unsigned int)decoded->ble);
msgPayload["uptime"] = new JSONValue((unsigned int)decoded->uptime);
jsonObj["payload"] = new JSONValue(msgPayload);
} else if (shouldLog) {
LOG_ERROR(errStr, msgType.c_str());
}
break;
}
#endif
case meshtastic_PortNum_REMOTE_HARDWARE_APP: {
meshtastic_HardwareMessage scratch;
meshtastic_HardwareMessage *decoded = NULL;
memset(&scratch, 0, sizeof(scratch));
if (pb_decode_from_bytes(mp->decoded.payload.bytes, mp->decoded.payload.size, &meshtastic_HardwareMessage_msg,
&scratch)) {
decoded = &scratch;
if (decoded->type == meshtastic_HardwareMessage_Type_GPIOS_CHANGED) {
msgType = "gpios_changed";
msgPayload["gpio_value"] = new JSONValue((unsigned int)decoded->gpio_value);
jsonObj["payload"] = new JSONValue(msgPayload);
} else if (decoded->type == meshtastic_HardwareMessage_Type_READ_GPIOS_REPLY) {
msgType = "gpios_read_reply";
msgPayload["gpio_value"] = new JSONValue((unsigned int)decoded->gpio_value);
msgPayload["gpio_mask"] = new JSONValue((unsigned int)decoded->gpio_mask);
jsonObj["payload"] = new JSONValue(msgPayload);
}
} else if (shouldLog) {
LOG_ERROR(errStr, "RemoteHardware");
}
break;
}
// add more packet types here if needed
default:
break;
}
} else if (shouldLog) {
LOG_WARN("Couldn't convert encrypted payload of MeshPacket to JSON");
}
jsonObj["id"] = new JSONValue((unsigned int)mp->id);
jsonObj["timestamp"] = new JSONValue((unsigned int)mp->rx_time);
jsonObj["to"] = new JSONValue((unsigned int)mp->to);
jsonObj["from"] = new JSONValue((unsigned int)mp->from);
jsonObj["channel"] = new JSONValue((unsigned int)mp->channel);
jsonObj["type"] = new JSONValue(msgType.c_str());
jsonObj["sender"] = new JSONValue(owner.id);
if (mp->rx_rssi != 0)
jsonObj["rssi"] = new JSONValue((int)mp->rx_rssi);
if (mp->rx_snr != 0)
jsonObj["snr"] = new JSONValue((float)mp->rx_snr);
if (mp->hop_start != 0 && mp->hop_limit <= mp->hop_start) {
jsonObj["hops_away"] = new JSONValue((unsigned int)(mp->hop_start - mp->hop_limit));
jsonObj["hop_start"] = new JSONValue((unsigned int)(mp->hop_start));
}
// serialize and write it to the stream
JSONValue *value = new JSONValue(jsonObj);
std::string jsonStr = value->Stringify();
if (shouldLog)
LOG_INFO("serialized json message: %s", jsonStr.c_str());
delete value;
return jsonStr;
}
std::string MeshPacketSerializer::JsonSerializeEncrypted(const meshtastic_MeshPacket *mp)
{
JSONObject jsonObj;
jsonObj["id"] = new JSONValue((unsigned int)mp->id);
jsonObj["time_ms"] = new JSONValue((double)millis());
jsonObj["timestamp"] = new JSONValue((unsigned int)mp->rx_time);
jsonObj["to"] = new JSONValue((unsigned int)mp->to);
jsonObj["from"] = new JSONValue((unsigned int)mp->from);
jsonObj["channel"] = new JSONValue((unsigned int)mp->channel);
jsonObj["want_ack"] = new JSONValue(mp->want_ack);
if (mp->rx_rssi != 0)
jsonObj["rssi"] = new JSONValue((int)mp->rx_rssi);
if (mp->rx_snr != 0)
jsonObj["snr"] = new JSONValue((float)mp->rx_snr);
if (mp->hop_start != 0 && mp->hop_limit <= mp->hop_start) {
jsonObj["hops_away"] = new JSONValue((unsigned int)(mp->hop_start - mp->hop_limit));
jsonObj["hop_start"] = new JSONValue((unsigned int)(mp->hop_start));
}
jsonObj["size"] = new JSONValue((unsigned int)mp->encrypted.size);
auto encryptedStr = bytesToHex(mp->encrypted.bytes, mp->encrypted.size);
jsonObj["bytes"] = new JSONValue(encryptedStr.c_str());
// serialize and write it to the stream
JSONValue *value = new JSONValue(jsonObj);
std::string jsonStr = value->Stringify();
delete value;
return jsonStr;
}
#endif
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