andry/EMS-ESP32
1
0
Fork 0
mirror of https://github.com/emsesp/EMS-ESP32.git synced 2025-12-07 16:29:51 +03:00
Code Issues Packages Projects Releases Wiki Activity

prevent crash when send telegram too short

Browse Source
This commit is contained in:
proddy
2020-11-08 20:54:24 +01:00
parent 5088e3acee
commit 7d73efbd31
1 changed files with 5 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
src/telegram.cpp
View File

@@ -429,6 +429,11 @@ void TxService::add(const uint8_t operation,
// format is EMS 1.0 (src, dest, type_id, offset, data) // format is EMS 1.0 (src, dest, type_id, offset, data)
// length is the length of the whole telegram data, excluding the CRC // length is the length of the whole telegram data, excluding the CRC
void TxService::add(uint8_t operation, const uint8_t * data, const uint8_t length, const bool front) { void TxService::add(uint8_t operation, const uint8_t * data, const uint8_t length, const bool front) {
// check length
if (length < 5) {
return;
}
// build header. src, dest and offset have fixed positions // build header. src, dest and offset have fixed positions
uint8_t src = data[0]; uint8_t src = data[0];
uint8_t dest = data[1]; uint8_t dest = data[1];