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Allow setting hopLimit for MQTT json sendtext and sendposition (#3735)

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* Fix channel name extraction

* Allow setting hopLimit for mqtt sendtext and sendposition
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Mike 2024-04-28 02:15:54 +03:00 committed by GitHub
parent 6cc7dee95c
commit ee4c4ae6c9
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1 changed files with 8 additions and 3 deletions
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11
src/mqtt/MQTT.cpp
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@ -54,9 +54,9 @@ void MQTT::onReceive(char *topic, byte *payload, size_t length)
JSONObject json;
json = json_value->AsObject();
// parse the channel name from the topic string by looking for "json/"
const char *jsonSlash = "json/";
char *ptr = strstr(topic, jsonSlash) + sizeof(jsonSlash) + 1; // set pointer to after "json/"
// parse the channel name from the topic string
// the topic has been checked above for having jsonTopic prefix, so just move past it
char *ptr = topic + jsonTopic.length();
ptr = strtok(ptr, "/") ? strtok(ptr, "/") : ptr; // if another "/" was added, parse string up to that character
meshtastic_Channel sendChannel = channels.getByName(ptr);
// We allow downlink JSON packets only on a channel named "mqtt"
@ -76,6 +76,8 @@ void MQTT::onReceive(char *topic, byte *payload, size_t length)
p->channel = json["channel"]->AsNumber();
if (json.find("to") != json.end() && json["to"]->IsNumber())
p->to = json["to"]->AsNumber();
if (json.find("hopLimit") != json.end() && json["hopLimit"]->IsNumber())
p->hop_limit = json["hopLimit"]->AsNumber();
if (jsonPayloadStr.length() <= sizeof(p->decoded.payload.bytes)) {
memcpy(p->decoded.payload.bytes, jsonPayloadStr.c_str(), jsonPayloadStr.length());
p->decoded.payload.size = jsonPayloadStr.length();
@ -105,6 +107,8 @@ void MQTT::onReceive(char *topic, byte *payload, size_t length)
p->channel = json["channel"]->AsNumber();
if (json.find("to") != json.end() && json["to"]->IsNumber())
p->to = json["to"]->AsNumber();
if (json.find("hopLimit") != json.end() && json["hopLimit"]->IsNumber())
p->hop_limit = json["hopLimit"]->AsNumber();
p->decoded.payload.size =
pb_encode_to_bytes(p->decoded.payload.bytes, sizeof(p->decoded.payload.bytes),
&meshtastic_Position_msg, &pos); // make the Data protobuf from position
@ -907,6 +911,7 @@ bool MQTT::isValidJsonEnvelope(JSONObject &json)
{
// if "sender" is provided, avoid processing packets we uplinked
return (json.find("sender") != json.end() ? (json["sender"]->AsString().compare(owner.id) != 0) : true) &&
(json.find("hopLimit") != json.end() ? json["hopLimit"]->IsNumber() : true) && // hop limit should be a number
(json.find("from") != json.end()) && json["from"]->IsNumber() &&
(json["from"]->AsNumber() == nodeDB->getNodeNum()) && // only accept message if the "from" is us
(json.find("type") != json.end()) && json["type"]->IsString() && // should specify a type