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[LoRaWAN] Replaced VLAs with dynamically allocated memory

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This commit is contained in:
jgromes 2023-11-18 16:46:12 +01:00
parent 713162fcc7
commit 7e70785909
1 changed files with 19 additions and 3 deletions
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22
src/protocols/LoRaWAN/LoRaWAN.cpp
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@ -802,7 +802,8 @@ int16_t LoRaWANNode::uplink(uint8_t* data, size_t len, uint8_t port, bool isConf
// check if we have some MAC commands to append
if(foptsLen > 0) {
uint8_t foptsBuff[foptsBufSize];
// assume maximum possible buffer size
uint8_t foptsBuff[15];
uint8_t* foptsPtr = foptsBuff;
// append all MAC replies into fopts buffer
@ -1209,7 +1210,11 @@ int16_t LoRaWANNode::downlink(uint8_t* data, size_t* len, LoRaWANEvent_t* event)
// if FOptsLen for the next uplink is larger than can be piggybacked onto an uplink, send separate uplink
if(this->commandsUp.len > 15) {
size_t foptsBufSize = this->commandsUp.len;
uint8_t foptsBuff[foptsBufSize];
#if defined(RADIOLIB_STATIC_ONLY)
uint8_t foptsBuff[RADIOLIB_STATIC_ARRAY_SIZE];
#else
uint8_t* foptsBuff = new uint8_t[foptsBufSize];
#endif
uint8_t* foptsPtr = foptsBuff;
// append all MAC replies into fopts buffer
int16_t i = 0;
@ -1232,9 +1237,20 @@ int16_t LoRaWANNode::downlink(uint8_t* data, size_t* len, LoRaWANEvent_t* event)
this->isMACPayload = true;
this->uplink(foptsBuff, foptsBufSize, RADIOLIB_LORAWAN_FPORT_MAC_COMMAND);
uint8_t strDown[this->band->payloadLenMax[this->dataRates[RADIOLIB_LORAWAN_CHANNEL_DIR_DOWNLINK]]];
#if !defined(RADIOLIB_STATIC_ONLY)
delete[] foptsBuff;
#endif
#if defined(RADIOLIB_STATIC_ONLY)
uint8_t strDown[RADIOLIB_STATIC_ARRAY_SIZE];
#else
uint8_t* strDown = new uint8_t[this->band->payloadLenMax[this->dataRates[RADIOLIB_LORAWAN_CHANNEL_DIR_DOWNLINK]]];
#endif
size_t lenDown = 0;
state = this->downlink(strDown, &lenDown);
#if !defined(RADIOLIB_STATIC_ONLY)
delete[] strDown;
#endif
RADIOLIB_ASSERT(state);
}