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Reorder 'if's to avoid object creation

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Eric Severance 2024-12-17 11:17:35 -08:00
parent 9712cc22c6
commit 3f79dd0139
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1 changed files with 14 additions and 15 deletions
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29
src/mqtt/MQTT.cpp
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@ -82,14 +82,14 @@ inline void onReceiveProto(char *topic, byte *payload, size_t length)
}
LOG_INFO("Received MQTT topic %s, len=%u", topic, length);
UniquePacketPoolPacket p = packetPool.allocUniqueCopy(*e.packet);
p->via_mqtt = true; // Mark that the packet was received via MQTT
if (isFromUs(p.get())) {
if (isFromUs(e.packet)) {
LOG_INFO("Ignore downlink message we originally sent");
return;
}
UniquePacketPoolPacket p = packetPool.allocUniqueCopy(*e.packet);
p->via_mqtt = true; // Mark that the packet was received via MQTT
if (p->which_payload_variant == meshtastic_MeshPacket_decoded_tag) {
if (moduleConfig.mqtt.encryption_enabled) {
LOG_INFO("Ignore decoded message on MQTT, encryption is enabled");
@ -126,9 +126,8 @@ inline bool isValidJsonEnvelope(JSONObject &json)
(json.find("payload") != json.end()); // should have a payload
}
inline void onReceiveJson(char *channelName, byte *payload, size_t length)
inline void onReceiveJson(byte *payload, size_t length)
{
// check if this is a json payload message by comparing the topic start
char payloadStr[length + 1];
memcpy(payloadStr, payload, length);
payloadStr[length] = 0; // null terminated string
@ -142,14 +141,6 @@ inline void onReceiveJson(char *channelName, byte *payload, size_t length)
JSONObject json;
json = json_value->AsObject();
meshtastic_Channel sendChannel = channels.getByName(channelName);
// We allow downlink JSON packets only on a channel named "mqtt"
if (!(strncasecmp(channels.getGlobalId(sendChannel.index), Channels::mqttChannel, strlen(Channels::mqttChannel)) == 0 &&
sendChannel.settings.downlink_enabled)) {
LOG_WARN("JSON downlink received on channel not called 'mqtt' or without downlink enabled");
return;
}
if (!isValidJsonEnvelope(json)) {
LOG_ERROR("JSON received payload on MQTT but not a valid envelope");
return;
@ -227,13 +218,21 @@ void MQTT::onReceive(char *topic, byte *payload, size_t length)
LOG_WARN("Empty MQTT payload received, topic %s!", topic);
return;
}
// check if this is a json payload message by comparing the topic start
if (moduleConfig.mqtt.json_enabled && (strncmp(topic, jsonTopic.c_str(), jsonTopic.length()) == 0)) {
// parse the channel name from the topic string
// the topic has been checked above for having jsonTopic prefix, so just move past it
char *channelName = topic + jsonTopic.length();
// if another "/" was added, parse string up to that character
channelName = strtok(channelName, "/") ? strtok(channelName, "/") : channelName;
onReceiveJson(channelName, payload, length);
// We allow downlink JSON packets only on a channel named "mqtt"
meshtastic_Channel &sendChannel = channels.getByName(channelName);
if (!(strncasecmp(channels.getGlobalId(sendChannel.index), Channels::mqttChannel, strlen(Channels::mqttChannel)) == 0 &&
sendChannel.settings.downlink_enabled)) {
LOG_WARN("JSON downlink received on channel not called 'mqtt' or without downlink enabled");
return;
}
onReceiveJson(payload, length);
} else {
onReceiveProto(topic, payload, length);
}